diff options
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/Makefile | 2 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/mbox_defs.h | 12 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.c | 92 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mm.c | 32 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.c | 3445 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 714 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 6325 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fp.c | 1241 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 2676 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 766 |
10 files changed, 11756 insertions, 3549 deletions
diff --git a/drivers/scsi/megaraid/Makefile b/drivers/scsi/megaraid/Makefile index f469915b97c..5826ed509e3 100644 --- a/drivers/scsi/megaraid/Makefile +++ b/drivers/scsi/megaraid/Makefile @@ -1,3 +1,5 @@ obj-$(CONFIG_MEGARAID_MM) += megaraid_mm.o obj-$(CONFIG_MEGARAID_MAILBOX) += megaraid_mbox.o obj-$(CONFIG_MEGARAID_SAS) += megaraid_sas.o +megaraid_sas-objs := megaraid_sas_base.o megaraid_sas_fusion.o \ + megaraid_sas_fp.o diff --git a/drivers/scsi/megaraid/mbox_defs.h b/drivers/scsi/megaraid/mbox_defs.h index 170399ef06f..e01c6f7c2ca 100644 --- a/drivers/scsi/megaraid/mbox_defs.h +++ b/drivers/scsi/megaraid/mbox_defs.h @@ -497,7 +497,7 @@ typedef struct { * @inserted_drive : channel:Id of inserted drive * @battery_status : bit 0: battery module missing * bit 1: VBAD - * bit 2: temprature high + * bit 2: temperature high * bit 3: battery pack missing * bit 4,5: * 00 - charge complete @@ -660,7 +660,7 @@ typedef struct { * @lparam : logical drives parameters * @span : span * - * 8-LD logical drive with upto 8 spans + * 8-LD logical drive with up to 8 spans */ typedef struct { logdrv_param_t lparam; @@ -673,7 +673,7 @@ typedef struct { * @lparam : logical drives parameters * @span : span * - * 8-LD logical drive with upto 4 spans + * 8-LD logical drive with up to 4 spans */ typedef struct { logdrv_param_t lparam; @@ -686,7 +686,7 @@ typedef struct { * @type : Type of the device * @cur_status : current status of the device * @tag_depth : Level of tagging - * @sync_neg : sync negotiation - ENABLE or DISBALE + * @sync_neg : sync negotiation - ENABLE or DISABLE * @size : configurable size in terms of 512 byte */ typedef struct { @@ -720,7 +720,7 @@ typedef struct { * @ldrv : logical drives information * @pdrv : physical drives information * - * Disk array for 8LD logical drives with upto 8 spans + * Disk array for 8LD logical drives with up to 8 spans */ typedef struct { uint8_t numldrv; @@ -737,7 +737,7 @@ typedef struct { * @ldrv : logical drives information * @pdrv : physical drives information * - * Disk array for 8LD logical drives with upto 4 spans + * Disk array for 8LD logical drives with up to 4 spans */ typedef struct { uint8_t numldrv; diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index 805bb61dde1..e2237a97cb9 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -67,9 +67,11 @@ * * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287 * - * For history of changes, see Documentation/ChangeLog.megaraid + * For history of changes, see Documentation/scsi/ChangeLog.megaraid */ +#include <linux/slab.h> +#include <linux/module.h> #include "megaraid_mbox.h" static int megaraid_init(void); @@ -112,8 +114,7 @@ static int megaraid_mbox_fire_sync_cmd(adapter_t *); static void megaraid_mbox_display_scb(adapter_t *, scb_t *); static void megaraid_mbox_setup_device_map(adapter_t *); -static int megaraid_queue_command(struct scsi_cmnd *, - void (*)(struct scsi_cmnd *)); +static int megaraid_queue_command(struct Scsi_Host *, struct scsi_cmnd *); static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *); static void megaraid_mbox_runpendq(adapter_t *, scb_t *); static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *, @@ -304,7 +305,7 @@ static struct pci_driver megaraid_pci_driver = { .name = "megaraid", .id_table = pci_id_table_g, .probe = megaraid_probe_one, - .remove = __devexit_p(megaraid_detach_one), + .remove = megaraid_detach_one, .shutdown = megaraid_mbox_shutdown, }; @@ -335,12 +336,17 @@ static struct device_attribute *megaraid_sdev_attrs[] = { * megaraid_change_queue_depth - Change the device's queue depth * @sdev: scsi device struct * @qdepth: depth to set + * @reason: calling context * * Return value: * actual depth set */ -static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth) +static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth, + int reason) { + if (reason != SCSI_QDEPTH_DEFAULT) + return -EOPNOTSUPP; + if (qdepth > MBOX_MAX_SCSI_CMDS) qdepth = MBOX_MAX_SCSI_CMDS; scsi_adjust_queue_depth(sdev, 0, qdepth); @@ -361,6 +367,7 @@ static struct scsi_host_template megaraid_template_g = { .eh_host_reset_handler = megaraid_reset_handler, .change_queue_depth = megaraid_change_queue_depth, .use_clustering = ENABLE_CLUSTERING, + .no_write_same = 1, .sdev_attrs = megaraid_sdev_attrs, .shost_attrs = megaraid_shost_attrs, }; @@ -428,7 +435,7 @@ megaraid_exit(void) * This routine should be called whenever a new adapter is detected by the * PCI hotplug susbsystem. */ -static int __devinit +static int megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) { adapter_t *adapter; @@ -473,7 +480,7 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) // Setup the default DMA mask. This would be changed later on // depending on hardware capabilities - if (pci_set_dma_mask(adapter->pdev, DMA_32BIT_MASK) != 0) { + if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(32)) != 0) { con_log(CL_ANN, (KERN_WARNING "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); @@ -528,7 +535,6 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) return 0; out_cmm_unreg: - pci_set_drvdata(pdev, NULL); megaraid_cmm_unregister(adapter); out_fini_mbox: megaraid_fini_mbox(adapter); @@ -543,7 +549,7 @@ out_probe_one: /** * megaraid_detach_one - release framework resources and call LLD release routine - * @pdev : handle for our PCI cofiguration space + * @pdev : handle for our PCI configuration space * * This routine is called during driver unload. We free all the allocated * resources and call the corresponding LLD so that it can also release all @@ -588,11 +594,6 @@ megaraid_detach_one(struct pci_dev *pdev) // detach from the IO sub-system megaraid_io_detach(adapter); - // reset the device state in the PCI structure. We check this - // condition when we enter here. If the device state is NULL, - // that would mean the device has already been removed - pci_set_drvdata(pdev, NULL); - // Unregister from common management module // // FIXME: this must return success or failure for conditions if there @@ -729,7 +730,7 @@ megaraid_io_detach(adapter_t *adapter) * - Allocate memory required for all the commands * - Use internal library of FW routines, build up complete soft state */ -static int __devinit +static int megaraid_init_mbox(adapter_t *adapter) { struct pci_dev *pdev; @@ -900,11 +901,11 @@ megaraid_init_mbox(adapter_t *adapter) adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { - if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK)) { + if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(64))) { con_log(CL_ANN, (KERN_WARNING "megaraid: DMA mask for 64-bit failed\n")); - if (pci_set_dma_mask (adapter->pdev, DMA_32BIT_MASK)) { + if (pci_set_dma_mask (adapter->pdev, DMA_BIT_MASK(32))) { con_log(CL_ANN, (KERN_WARNING "megaraid: 32-bit DMA mask failed\n")); goto out_free_sysfs_res; @@ -973,7 +974,7 @@ megaraid_fini_mbox(adapter_t *adapter) * @adapter : soft state of the raid controller * * Allocate and align the shared mailbox. This maibox is used to issue - * all the commands. For IO based controllers, the mailbox is also regsitered + * all the commands. For IO based controllers, the mailbox is also registered * with the FW. Allocate memory for all commands as well. * This is our big allocator. */ @@ -1478,7 +1479,7 @@ mbox_post_cmd(adapter_t *adapter, scb_t *scb) * Queue entry point for mailbox based controllers. */ static int -megaraid_queue_command(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) +megaraid_queue_command_lck(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) { adapter_t *adapter; scb_t *scb; @@ -1507,6 +1508,8 @@ megaraid_queue_command(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) return if_busy; } +static DEF_SCSI_QCMD(megaraid_queue_command) + /** * megaraid_mbox_build_cmd - transform the mid-layer scsi commands * @adapter : controller's soft state @@ -2019,7 +2022,7 @@ megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, * @scb : scsi control block * @scp : scsi command from the mid-layer * - * Prepare a command for the scsi physical devices. This rountine prepares + * Prepare a command for the scsi physical devices. This routine prepares * commands for devices which can take extended CDBs (>10 bytes). */ static void @@ -2308,8 +2311,8 @@ megaraid_mbox_dpc(unsigned long devp) // Was an abort issued for this command earlier if (scb->state & SCB_ABORT) { con_log(CL_ANN, (KERN_NOTICE - "megaraid: aborted cmd %lx[%x] completed\n", - scp->serial_number, scb->sno)); + "megaraid: aborted cmd [%x] completed\n", + scb->sno)); } /* @@ -2465,8 +2468,8 @@ megaraid_abort_handler(struct scsi_cmnd *scp) raid_dev = ADAP2RAIDDEV(adapter); con_log(CL_ANN, (KERN_WARNING - "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", - scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp), + "megaraid: aborting cmd=%x <c=%d t=%d l=%d>\n", + scp->cmnd[0], SCP2CHANNEL(scp), SCP2TARGET(scp), SCP2LUN(scp))); // If FW has stopped responding, simply return failure @@ -2489,9 +2492,8 @@ megaraid_abort_handler(struct scsi_cmnd *scp) list_del_init(&scb->list); // from completed list con_log(CL_ANN, (KERN_WARNING - "megaraid: %ld:%d[%d:%d], abort from completed list\n", - scp->serial_number, scb->sno, - scb->dev_channel, scb->dev_target)); + "megaraid: %d[%d:%d], abort from completed list\n", + scb->sno, scb->dev_channel, scb->dev_target)); scp->result = (DID_ABORT << 16); scp->scsi_done(scp); @@ -2520,9 +2522,8 @@ megaraid_abort_handler(struct scsi_cmnd *scp) ASSERT(!(scb->state & SCB_ISSUED)); con_log(CL_ANN, (KERN_WARNING - "megaraid abort: %ld[%d:%d], driver owner\n", - scp->serial_number, scb->dev_channel, - scb->dev_target)); + "megaraid abort: [%d:%d], driver owner\n", + scb->dev_channel, scb->dev_target)); scp->result = (DID_ABORT << 16); scp->scsi_done(scp); @@ -2553,25 +2554,21 @@ megaraid_abort_handler(struct scsi_cmnd *scp) if (!(scb->state & SCB_ISSUED)) { con_log(CL_ANN, (KERN_WARNING - "megaraid abort: %ld%d[%d:%d], invalid state\n", - scp->serial_number, scb->sno, scb->dev_channel, - scb->dev_target)); + "megaraid abort: %d[%d:%d], invalid state\n", + scb->sno, scb->dev_channel, scb->dev_target)); BUG(); } else { con_log(CL_ANN, (KERN_WARNING - "megaraid abort: %ld:%d[%d:%d], fw owner\n", - scp->serial_number, scb->sno, scb->dev_channel, - scb->dev_target)); + "megaraid abort: %d[%d:%d], fw owner\n", + scb->sno, scb->dev_channel, scb->dev_target)); } } } spin_unlock_irq(&adapter->lock); if (!found) { - con_log(CL_ANN, (KERN_WARNING - "megaraid abort: scsi cmd:%ld, do now own\n", - scp->serial_number)); + con_log(CL_ANN, (KERN_WARNING "megaraid abort: do now own\n")); // FIXME: Should there be a callback for this command? return SUCCESS; @@ -2584,7 +2581,7 @@ megaraid_abort_handler(struct scsi_cmnd *scp) } /** - * megaraid_reset_handler - device reset hadler for mailbox based driver + * megaraid_reset_handler - device reset handler for mailbox based driver * @scp : reference command * * Reset handler for the mailbox based controller. First try to find out if @@ -2642,9 +2639,8 @@ megaraid_reset_handler(struct scsi_cmnd *scp) } else { if (scb->scp == scp) { // Found command con_log(CL_ANN, (KERN_WARNING - "megaraid: %ld:%d[%d:%d], reset from pending list\n", - scp->serial_number, scb->sno, - scb->dev_channel, scb->dev_target)); + "megaraid: %d[%d:%d], reset from pending list\n", + scb->sno, scb->dev_channel, scb->dev_target)); } else { con_log(CL_ANN, (KERN_WARNING "megaraid: IO packet with %d[%d:%d] being reset\n", @@ -2682,7 +2678,7 @@ megaraid_reset_handler(struct scsi_cmnd *scp) (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); } - // bailout if no recovery happended in reset time + // bailout if no recovery happened in reset time if (adapter->outstanding_cmds == 0) { break; } @@ -2704,7 +2700,7 @@ megaraid_reset_handler(struct scsi_cmnd *scp) } else { con_log(CL_ANN, (KERN_NOTICE - "megaraid mbox: reset sequence completed sucessfully\n")); + "megaraid mbox: reset sequence completed successfully\n")); } @@ -2730,7 +2726,7 @@ megaraid_reset_handler(struct scsi_cmnd *scp) } out: - spin_unlock_irq(&adapter->lock); + spin_unlock(&adapter->lock); return rval; } @@ -3445,7 +3441,7 @@ megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) * megaraid_mbox_setup_device_map - manage device ids * @adapter : Driver's soft state * - * Manange the device ids to have an appropraite mapping between the kernel + * Manage the device ids to have an appropriate mapping between the kernel * scsi addresses and megaraid scsi and logical drive addresses. We export * scsi devices on their actual addresses, whereas the logical drives are * exported on a virtual scsi channel. @@ -3966,7 +3962,7 @@ megaraid_sysfs_get_ldmap_timeout(unsigned long data) * NOTE: The commands issuance functionality is not generalized and * implemented in context of "get ld map" command only. If required, the * command issuance logical can be trivially pulled out and implemented as a - * standalone libary. For now, this should suffice since there is no other + * standalone library. For now, this should suffice since there is no other * user of this interface. * * Return 0 on success. diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c index f680561d2c6..a70692779a1 100644 --- a/drivers/scsi/megaraid/megaraid_mm.c +++ b/drivers/scsi/megaraid/megaraid_mm.c @@ -15,13 +15,15 @@ * Common management module */ #include <linux/sched.h> -#include <linux/smp_lock.h> +#include <linux/slab.h> +#include <linux/mutex.h> #include "megaraid_mm.h" // Entry points for char node driver +static DEFINE_MUTEX(mraid_mm_mutex); static int mraid_mm_open(struct inode *, struct file *); -static int mraid_mm_ioctl(struct inode *, struct file *, uint, unsigned long); +static long mraid_mm_unlocked_ioctl(struct file *, uint, unsigned long); // routines to convert to and from the old the format @@ -69,11 +71,12 @@ static wait_queue_head_t wait_q; static const struct file_operations lsi_fops = { .open = mraid_mm_open, - .ioctl = mraid_mm_ioctl, + .unlocked_ioctl = mraid_mm_unlocked_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = mraid_mm_compat_ioctl, #endif .owner = THIS_MODULE, + .llseek = noop_llseek, }; static struct miscdevice megaraid_mm_dev = { @@ -97,7 +100,6 @@ mraid_mm_open(struct inode *inode, struct file *filep) */ if (!capable(CAP_SYS_ADMIN)) return (-EACCES); - cycle_kernel_lock(); return 0; } @@ -109,8 +111,7 @@ mraid_mm_open(struct inode *inode, struct file *filep) * @arg : user ioctl packet */ static int -mraid_mm_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, - unsigned long arg) +mraid_mm_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) { uioc_t *kioc; char signature[EXT_IOCTL_SIGN_SZ] = {0}; @@ -217,6 +218,19 @@ mraid_mm_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, return rval; } +static long +mraid_mm_unlocked_ioctl(struct file *filep, unsigned int cmd, + unsigned long arg) +{ + int err; + + /* inconsistent: mraid_mm_compat_ioctl doesn't take the BKL */ + mutex_lock(&mraid_mm_mutex); + err = mraid_mm_ioctl(filep, cmd, arg); + mutex_unlock(&mraid_mm_mutex); + + return err; +} /** * mraid_mm_get_adapter - Returns corresponding adapters for the mimd packet @@ -472,6 +486,8 @@ mimd_to_kioc(mimd_t __user *umimd, mraid_mmadp_t *adp, uioc_t *kioc) pthru32->dataxferaddr = kioc->buf_paddr; if (kioc->data_dir & UIOC_WR) { + if (pthru32->dataxferlen > kioc->xferlen) + return -EINVAL; if (copy_from_user(kioc->buf_vaddr, kioc->user_data, pthru32->dataxferlen)) { return (-EFAULT); @@ -882,7 +898,7 @@ hinfo_to_cinfo(mraid_hba_info_t *hinfo, mcontroller_t *cinfo) /** * mraid_mm_register_adp - Registration routine for low level drivers - * @lld_adp : Adapter objejct + * @lld_adp : Adapter object */ int mraid_mm_register_adp(mraid_mmadp_t *lld_adp) @@ -1224,7 +1240,7 @@ mraid_mm_compat_ioctl(struct file *filep, unsigned int cmd, { int err; - err = mraid_mm_ioctl(NULL, filep, cmd, arg); + err = mraid_mm_ioctl(filep, cmd, arg); return err; } diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c deleted file mode 100644 index fc7ac158476..00000000000 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ /dev/null @@ -1,3445 +0,0 @@ -/* - * - * Linux MegaRAID driver for SAS based RAID controllers - * - * Copyright (c) 2003-2005 LSI Corporation. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * FILE : megaraid_sas.c - * Version : v00.00.03.20-rc1 - * - * Authors: - * (email-id : megaraidlinux@lsi.com) - * Sreenivas Bagalkote - * Sumant Patro - * Bo Yang - * - * List of supported controllers - * - * OEM Product Name VID DID SSVID SSID - * --- ------------ --- --- ---- ---- - */ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/list.h> -#include <linux/moduleparam.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/smp_lock.h> -#include <linux/uio.h> -#include <asm/uaccess.h> -#include <linux/fs.h> -#include <linux/compat.h> -#include <linux/blkdev.h> -#include <linux/mutex.h> - -#include <scsi/scsi.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/scsi_device.h> -#include <scsi/scsi_host.h> -#include "megaraid_sas.h" - -/* - * poll_mode_io:1- schedule complete completion from q cmd - */ -static unsigned int poll_mode_io; -module_param_named(poll_mode_io, poll_mode_io, int, 0); -MODULE_PARM_DESC(poll_mode_io, - "Complete cmds from IO path, (default=0)"); - -MODULE_LICENSE("GPL"); -MODULE_VERSION(MEGASAS_VERSION); -MODULE_AUTHOR("megaraidlinux@lsi.com"); -MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); - -/* - * PCI ID table for all supported controllers - */ -static struct pci_device_id megasas_pci_table[] = { - - {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, - /* xscale IOP */ - {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, - /* ppc IOP */ - {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, - /* ppc IOP */ - {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, - /* xscale IOP, vega */ - {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, - /* xscale IOP */ - {} -}; - -MODULE_DEVICE_TABLE(pci, megasas_pci_table); - -static int megasas_mgmt_majorno; -static struct megasas_mgmt_info megasas_mgmt_info; -static struct fasync_struct *megasas_async_queue; -static DEFINE_MUTEX(megasas_async_queue_mutex); - -static u32 megasas_dbg_lvl; - -static void -megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, - u8 alt_status); - -/** - * megasas_get_cmd - Get a command from the free pool - * @instance: Adapter soft state - * - * Returns a free command from the pool - */ -static struct megasas_cmd *megasas_get_cmd(struct megasas_instance - *instance) -{ - unsigned long flags; - struct megasas_cmd *cmd = NULL; - - spin_lock_irqsave(&instance->cmd_pool_lock, flags); - - if (!list_empty(&instance->cmd_pool)) { - cmd = list_entry((&instance->cmd_pool)->next, - struct megasas_cmd, list); - list_del_init(&cmd->list); - } else { - printk(KERN_ERR "megasas: Command pool empty!\n"); - } - - spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); - return cmd; -} - -/** - * megasas_return_cmd - Return a cmd to free command pool - * @instance: Adapter soft state - * @cmd: Command packet to be returned to free command pool - */ -static inline void -megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) -{ - unsigned long flags; - - spin_lock_irqsave(&instance->cmd_pool_lock, flags); - - cmd->scmd = NULL; - list_add_tail(&cmd->list, &instance->cmd_pool); - - spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); -} - - -/** -* The following functions are defined for xscale -* (deviceid : 1064R, PERC5) controllers -*/ - -/** - * megasas_enable_intr_xscale - Enables interrupts - * @regs: MFI register set - */ -static inline void -megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) -{ - writel(1, &(regs)->outbound_intr_mask); - - /* Dummy readl to force pci flush */ - readl(®s->outbound_intr_mask); -} - -/** - * megasas_disable_intr_xscale -Disables interrupt - * @regs: MFI register set - */ -static inline void -megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) -{ - u32 mask = 0x1f; - writel(mask, ®s->outbound_intr_mask); - /* Dummy readl to force pci flush */ - readl(®s->outbound_intr_mask); -} - -/** - * megasas_read_fw_status_reg_xscale - returns the current FW status value - * @regs: MFI register set - */ -static u32 -megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) -{ - return readl(&(regs)->outbound_msg_0); -} -/** - * megasas_clear_interrupt_xscale - Check & clear interrupt - * @regs: MFI register set - */ -static int -megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) -{ - u32 status; - /* - * Check if it is our interrupt - */ - status = readl(®s->outbound_intr_status); - - if (!(status & MFI_OB_INTR_STATUS_MASK)) { - return 1; - } - - /* - * Clear the interrupt by writing back the same value - */ - writel(status, ®s->outbound_intr_status); - - return 0; -} - -/** - * megasas_fire_cmd_xscale - Sends command to the FW - * @frame_phys_addr : Physical address of cmd - * @frame_count : Number of frames for the command - * @regs : MFI register set - */ -static inline void -megasas_fire_cmd_xscale(dma_addr_t frame_phys_addr,u32 frame_count, struct megasas_register_set __iomem *regs) -{ - writel((frame_phys_addr >> 3)|(frame_count), - &(regs)->inbound_queue_port); -} - -static struct megasas_instance_template megasas_instance_template_xscale = { - - .fire_cmd = megasas_fire_cmd_xscale, - .enable_intr = megasas_enable_intr_xscale, - .disable_intr = megasas_disable_intr_xscale, - .clear_intr = megasas_clear_intr_xscale, - .read_fw_status_reg = megasas_read_fw_status_reg_xscale, -}; - -/** -* This is the end of set of functions & definitions specific -* to xscale (deviceid : 1064R, PERC5) controllers -*/ - -/** -* The following functions are defined for ppc (deviceid : 0x60) -* controllers -*/ - -/** - * megasas_enable_intr_ppc - Enables interrupts - * @regs: MFI register set - */ -static inline void -megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) -{ - writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); - - writel(~0x80000004, &(regs)->outbound_intr_mask); - - /* Dummy readl to force pci flush */ - readl(®s->outbound_intr_mask); -} - -/** - * megasas_disable_intr_ppc - Disable interrupt - * @regs: MFI register set - */ -static inline void -megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) -{ - u32 mask = 0xFFFFFFFF; - writel(mask, ®s->outbound_intr_mask); - /* Dummy readl to force pci flush */ - readl(®s->outbound_intr_mask); -} - -/** - * megasas_read_fw_status_reg_ppc - returns the current FW status value - * @regs: MFI register set - */ -static u32 -megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) -{ - return readl(&(regs)->outbound_scratch_pad); -} - -/** - * megasas_clear_interrupt_ppc - Check & clear interrupt - * @regs: MFI register set - */ -static int -megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) -{ - u32 status; - /* - * Check if it is our interrupt - */ - status = readl(®s->outbound_intr_status); - - if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) { - return 1; - } - - /* - * Clear the interrupt by writing back the same value - */ - writel(status, ®s->outbound_doorbell_clear); - - return 0; -} -/** - * megasas_fire_cmd_ppc - Sends command to the FW - * @frame_phys_addr : Physical address of cmd - * @frame_count : Number of frames for the command - * @regs : MFI register set - */ -static inline void -megasas_fire_cmd_ppc(dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs) -{ - writel((frame_phys_addr | (frame_count<<1))|1, - &(regs)->inbound_queue_port); -} - -static struct megasas_instance_template megasas_instance_template_ppc = { - - .fire_cmd = megasas_fire_cmd_ppc, - .enable_intr = megasas_enable_intr_ppc, - .disable_intr = megasas_disable_intr_ppc, - .clear_intr = megasas_clear_intr_ppc, - .read_fw_status_reg = megasas_read_fw_status_reg_ppc, -}; - -/** -* This is the end of set of functions & definitions -* specific to ppc (deviceid : 0x60) controllers -*/ - -/** - * megasas_issue_polled - Issues a polling command - * @instance: Adapter soft state - * @cmd: Command packet to be issued - * - * For polling, MFI requires the cmd_status to be set to 0xFF before posting. - */ -static int -megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) -{ - int i; - u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000; - - struct megasas_header *frame_hdr = &cmd->frame->hdr; - - frame_hdr->cmd_status = 0xFF; - frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; - - /* - * Issue the frame using inbound queue port - */ - instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); - - /* - * Wait for cmd_status to change - */ - for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) { - rmb(); - msleep(1); - } - - if (frame_hdr->cmd_status == 0xff) - return -ETIME; - - return 0; -} - -/** - * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds - * @instance: Adapter soft state - * @cmd: Command to be issued - * - * This function waits on an event for the command to be returned from ISR. - * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs - * Used to issue ioctl commands. - */ -static int -megasas_issue_blocked_cmd(struct megasas_instance *instance, - struct megasas_cmd *cmd) -{ - cmd->cmd_status = ENODATA; - - instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); - - wait_event_timeout(instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA), - MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ); - - return 0; -} - -/** - * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd - * @instance: Adapter soft state - * @cmd_to_abort: Previously issued cmd to be aborted - * - * MFI firmware can abort previously issued AEN comamnd (automatic event - * notification). The megasas_issue_blocked_abort_cmd() issues such abort - * cmd and waits for return status. - * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs - */ -static int -megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, - struct megasas_cmd *cmd_to_abort) -{ - struct megasas_cmd *cmd; - struct megasas_abort_frame *abort_fr; - - cmd = megasas_get_cmd(instance); - - if (!cmd) - return -1; - - abort_fr = &cmd->frame->abort; - - /* - * Prepare and issue the abort frame - */ - abort_fr->cmd = MFI_CMD_ABORT; - abort_fr->cmd_status = 0xFF; - abort_fr->flags = 0; - abort_fr->abort_context = cmd_to_abort->index; - abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; - abort_fr->abort_mfi_phys_addr_hi = 0; - - cmd->sync_cmd = 1; - cmd->cmd_status = 0xFF; - - instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); - - /* - * Wait for this cmd to complete - */ - wait_event_timeout(instance->abort_cmd_wait_q, (cmd->cmd_status != 0xFF), - MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ); - - megasas_return_cmd(instance, cmd); - return 0; -} - -/** - * megasas_make_sgl32 - Prepares 32-bit SGL - * @instance: Adapter soft state - * @scp: SCSI command from the mid-layer - * @mfi_sgl: SGL to be filled in - * - * If successful, this function returns the number of SG elements. Otherwise, - * it returnes -1. - */ -static int -megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, - union megasas_sgl *mfi_sgl) -{ - int i; - int sge_count; - struct scatterlist *os_sgl; - - sge_count = scsi_dma_map(scp); - BUG_ON(sge_count < 0); - - if (sge_count) { - scsi_for_each_sg(scp, os_sgl, sge_count, i) { - mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); - mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); - } - } - return sge_count; -} - -/** - * megasas_make_sgl64 - Prepares 64-bit SGL - * @instance: Adapter soft state - * @scp: SCSI command from the mid-layer - * @mfi_sgl: SGL to be filled in - * - * If successful, this function returns the number of SG elements. Otherwise, - * it returnes -1. - */ -static int -megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, - union megasas_sgl *mfi_sgl) -{ - int i; - int sge_count; - struct scatterlist *os_sgl; - - sge_count = scsi_dma_map(scp); - BUG_ON(sge_count < 0); - - if (sge_count) { - scsi_for_each_sg(scp, os_sgl, sge_count, i) { - mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); - mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); - } - } - return sge_count; -} - - /** - * megasas_get_frame_count - Computes the number of frames - * @frame_type : type of frame- io or pthru frame - * @sge_count : number of sg elements - * - * Returns the number of frames required for numnber of sge's (sge_count) - */ - -static u32 megasas_get_frame_count(u8 sge_count, u8 frame_type) -{ - int num_cnt; - int sge_bytes; - u32 sge_sz; - u32 frame_count=0; - - sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : - sizeof(struct megasas_sge32); - - /* - * Main frame can contain 2 SGEs for 64-bit SGLs and - * 3 SGEs for 32-bit SGLs for ldio & - * 1 SGEs for 64-bit SGLs and - * 2 SGEs for 32-bit SGLs for pthru frame - */ - if (unlikely(frame_type == PTHRU_FRAME)) { - if (IS_DMA64) - num_cnt = sge_count - 1; - else - num_cnt = sge_count - 2; - } else { - if (IS_DMA64) - num_cnt = sge_count - 2; - else - num_cnt = sge_count - 3; - } - - if(num_cnt>0){ - sge_bytes = sge_sz * num_cnt; - - frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + - ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; - } - /* Main frame */ - frame_count +=1; - - if (frame_count > 7) - frame_count = 8; - return frame_count; -} - -/** - * megasas_build_dcdb - Prepares a direct cdb (DCDB) command - * @instance: Adapter soft state - * @scp: SCSI command - * @cmd: Command to be prepared in - * - * This function prepares CDB commands. These are typcially pass-through - * commands to the devices. - */ -static int -megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, - struct megasas_cmd *cmd) -{ - u32 is_logical; - u32 device_id; - u16 flags = 0; - struct megasas_pthru_frame *pthru; - - is_logical = MEGASAS_IS_LOGICAL(scp); - device_id = MEGASAS_DEV_INDEX(instance, scp); - pthru = (struct megasas_pthru_frame *)cmd->frame; - - if (scp->sc_data_direction == PCI_DMA_TODEVICE) - flags = MFI_FRAME_DIR_WRITE; - else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) - flags = MFI_FRAME_DIR_READ; - else if (scp->sc_data_direction == PCI_DMA_NONE) - flags = MFI_FRAME_DIR_NONE; - - /* - * Prepare the DCDB frame - */ - pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; - pthru->cmd_status = 0x0; - pthru->scsi_status = 0x0; - pthru->target_id = device_id; - pthru->lun = scp->device->lun; - pthru->cdb_len = scp->cmd_len; - pthru->timeout = 0; - pthru->flags = flags; - pthru->data_xfer_len = scsi_bufflen(scp); - - memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); - - /* - * Construct SGL - */ - if (IS_DMA64) { - pthru->flags |= MFI_FRAME_SGL64; - pthru->sge_count = megasas_make_sgl64(instance, scp, - &pthru->sgl); - } else - pthru->sge_count = megasas_make_sgl32(instance, scp, - &pthru->sgl); - - /* - * Sense info specific - */ - pthru->sense_len = SCSI_SENSE_BUFFERSIZE; - pthru->sense_buf_phys_addr_hi = 0; - pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; - - /* - * Compute the total number of frames this command consumes. FW uses - * this number to pull sufficient number of frames from host memory. - */ - cmd->frame_count = megasas_get_frame_count(pthru->sge_count, - PTHRU_FRAME); - - return cmd->frame_count; -} - -/** - * megasas_build_ldio - Prepares IOs to logical devices - * @instance: Adapter soft state - * @scp: SCSI command - * @cmd: Command to to be prepared - * - * Frames (and accompanying SGLs) for regular SCSI IOs use this function. - */ -static int -megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, - struct megasas_cmd *cmd) -{ - u32 device_id; - u8 sc = scp->cmnd[0]; - u16 flags = 0; - struct megasas_io_frame *ldio; - - device_id = MEGASAS_DEV_INDEX(instance, scp); - ldio = (struct megasas_io_frame *)cmd->frame; - - if (scp->sc_data_direction == PCI_DMA_TODEVICE) - flags = MFI_FRAME_DIR_WRITE; - else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) - flags = MFI_FRAME_DIR_READ; - - /* - * Prepare the Logical IO frame: 2nd bit is zero for all read cmds - */ - ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; - ldio->cmd_status = 0x0; - ldio->scsi_status = 0x0; - ldio->target_id = device_id; - ldio->timeout = 0; - ldio->reserved_0 = 0; - ldio->pad_0 = 0; - ldio->flags = flags; - ldio->start_lba_hi = 0; - ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; - - /* - * 6-byte READ(0x08) or WRITE(0x0A) cdb - */ - if (scp->cmd_len == 6) { - ldio->lba_count = (u32) scp->cmnd[4]; - ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | - ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; - - ldio->start_lba_lo &= 0x1FFFFF; - } - - /* - * 10-byte READ(0x28) or WRITE(0x2A) cdb - */ - else if (scp->cmd_len == 10) { - ldio->lba_count = (u32) scp->cmnd[8] | - ((u32) scp->cmnd[7] << 8); - ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | - ((u32) scp->cmnd[3] << 16) | - ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; - } - - /* - * 12-byte READ(0xA8) or WRITE(0xAA) cdb - */ - else if (scp->cmd_len == 12) { - ldio->lba_count = ((u32) scp->cmnd[6] << 24) | - ((u32) scp->cmnd[7] << 16) | - ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; - - ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | - ((u32) scp->cmnd[3] << 16) | - ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; - } - - /* - * 16-byte READ(0x88) or WRITE(0x8A) cdb - */ - else if (scp->cmd_len == 16) { - ldio->lba_count = ((u32) scp->cmnd[10] << 24) | - ((u32) scp->cmnd[11] << 16) | - ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; - - ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | - ((u32) scp->cmnd[7] << 16) | - ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; - - ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | - ((u32) scp->cmnd[3] << 16) | - ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; - - } - - /* - * Construct SGL - */ - if (IS_DMA64) { - ldio->flags |= MFI_FRAME_SGL64; - ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); - } else - ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); - - /* - * Sense info specific - */ - ldio->sense_len = SCSI_SENSE_BUFFERSIZE; - ldio->sense_buf_phys_addr_hi = 0; - ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; - - /* - * Compute the total number of frames this command consumes. FW uses - * this number to pull sufficient number of frames from host memory. - */ - cmd->frame_count = megasas_get_frame_count(ldio->sge_count, IO_FRAME); - - return cmd->frame_count; -} - -/** - * megasas_is_ldio - Checks if the cmd is for logical drive - * @scmd: SCSI command - * - * Called by megasas_queue_command to find out if the command to be queued - * is a logical drive command - */ -static inline int megasas_is_ldio(struct scsi_cmnd *cmd) -{ - if (!MEGASAS_IS_LOGICAL(cmd)) - return 0; - switch (cmd->cmnd[0]) { - case READ_10: - case WRITE_10: - case READ_12: - case WRITE_12: - case READ_6: - case WRITE_6: - case READ_16: - case WRITE_16: - return 1; - default: - return 0; - } -} - - /** - * megasas_dump_pending_frames - Dumps the frame address of all pending cmds - * in FW - * @instance: Adapter soft state - */ -static inline void -megasas_dump_pending_frames(struct megasas_instance *instance) -{ - struct megasas_cmd *cmd; - int i,n; - union megasas_sgl *mfi_sgl; - struct megasas_io_frame *ldio; - struct megasas_pthru_frame *pthru; - u32 sgcount; - u32 max_cmd = instance->max_fw_cmds; - - printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); - printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); - if (IS_DMA64) - printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); - else - printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); - - printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); - for (i = 0; i < max_cmd; i++) { - cmd = instance->cmd_list[i]; - if(!cmd->scmd) - continue; - printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); - if (megasas_is_ldio(cmd->scmd)){ - ldio = (struct megasas_io_frame *)cmd->frame; - mfi_sgl = &ldio->sgl; - sgcount = ldio->sge_count; - printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount); - } - else { - pthru = (struct megasas_pthru_frame *) cmd->frame; - mfi_sgl = &pthru->sgl; - sgcount = pthru->sge_count; - printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount); - } - if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ - for (n = 0; n < sgcount; n++){ - if (IS_DMA64) - printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ; - else - printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; - } - } - printk(KERN_ERR "\n"); - } /*for max_cmd*/ - printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); - for (i = 0; i < max_cmd; i++) { - - cmd = instance->cmd_list[i]; - - if(cmd->sync_cmd == 1){ - printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); - } - } - printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); -} - -/** - * megasas_queue_command - Queue entry point - * @scmd: SCSI command to be queued - * @done: Callback entry point - */ -static int -megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) -{ - u32 frame_count; - struct megasas_cmd *cmd; - struct megasas_instance *instance; - - instance = (struct megasas_instance *) - scmd->device->host->hostdata; - - /* Don't process if we have already declared adapter dead */ - if (instance->hw_crit_error) - return SCSI_MLQUEUE_HOST_BUSY; - - scmd->scsi_done = done; - scmd->result = 0; - - if (MEGASAS_IS_LOGICAL(scmd) && - (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { - scmd->result = DID_BAD_TARGET << 16; - goto out_done; - } - - switch (scmd->cmnd[0]) { - case SYNCHRONIZE_CACHE: - /* - * FW takes care of flush cache on its own - * No need to send it down - */ - scmd->result = DID_OK << 16; - goto out_done; - default: - break; - } - - cmd = megasas_get_cmd(instance); - if (!cmd) - return SCSI_MLQUEUE_HOST_BUSY; - - /* - * Logical drive command - */ - if (megasas_is_ldio(scmd)) - frame_count = megasas_build_ldio(instance, scmd, cmd); - else - frame_count = megasas_build_dcdb(instance, scmd, cmd); - - if (!frame_count) - goto out_return_cmd; - - cmd->scmd = scmd; - scmd->SCp.ptr = (char *)cmd; - - /* - * Issue the command to the FW - */ - atomic_inc(&instance->fw_outstanding); - - instance->instancet->fire_cmd(cmd->frame_phys_addr ,cmd->frame_count-1,instance->reg_set); - /* - * Check if we have pend cmds to be completed - */ - if (poll_mode_io && atomic_read(&instance->fw_outstanding)) - tasklet_schedule(&instance->isr_tasklet); - - - return 0; - - out_return_cmd: - megasas_return_cmd(instance, cmd); - out_done: - done(scmd); - return 0; -} - -static int megasas_slave_configure(struct scsi_device *sdev) -{ - /* - * Don't export physical disk devices to the disk driver. - * - * FIXME: Currently we don't export them to the midlayer at all. - * That will be fixed once LSI engineers have audited the - * firmware for possible issues. - */ - if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && sdev->type == TYPE_DISK) - return -ENXIO; - - /* - * The RAID firmware may require extended timeouts. - */ - if (sdev->channel >= MEGASAS_MAX_PD_CHANNELS) - sdev->timeout = MEGASAS_DEFAULT_CMD_TIMEOUT * HZ; - return 0; -} - -/** - * megasas_complete_cmd_dpc - Returns FW's controller structure - * @instance_addr: Address of adapter soft state - * - * Tasklet to complete cmds - */ -static void megasas_complete_cmd_dpc(unsigned long instance_addr) -{ - u32 producer; - u32 consumer; - u32 context; - struct megasas_cmd *cmd; - struct megasas_instance *instance = - (struct megasas_instance *)instance_addr; - unsigned long flags; - - /* If we have already declared adapter dead, donot complete cmds */ - if (instance->hw_crit_error) - return; - - spin_lock_irqsave(&instance->completion_lock, flags); - - producer = *instance->producer; - consumer = *instance->consumer; - - while (consumer != producer) { - context = instance->reply_queue[consumer]; - - cmd = instance->cmd_list[context]; - - megasas_complete_cmd(instance, cmd, DID_OK); - - consumer++; - if (consumer == (instance->max_fw_cmds + 1)) { - consumer = 0; - } - } - - *instance->consumer = producer; - - spin_unlock_irqrestore(&instance->completion_lock, flags); - - /* - * Check if we can restore can_queue - */ - if (instance->flag & MEGASAS_FW_BUSY - && time_after(jiffies, instance->last_time + 5 * HZ) - && atomic_read(&instance->fw_outstanding) < 17) { - - spin_lock_irqsave(instance->host->host_lock, flags); - instance->flag &= ~MEGASAS_FW_BUSY; - instance->host->can_queue = - instance->max_fw_cmds - MEGASAS_INT_CMDS; - - spin_unlock_irqrestore(instance->host->host_lock, flags); - } -} - -/** - * megasas_wait_for_outstanding - Wait for all outstanding cmds - * @instance: Adapter soft state - * - * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to - * complete all its outstanding commands. Returns error if one or more IOs - * are pending after this time period. It also marks the controller dead. - */ -static int megasas_wait_for_outstanding(struct megasas_instance *instance) -{ - int i; - u32 wait_time = MEGASAS_RESET_WAIT_TIME; - - for (i = 0; i < wait_time; i++) { - - int outstanding = atomic_read(&instance->fw_outstanding); - - if (!outstanding) - break; - - if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { - printk(KERN_NOTICE "megasas: [%2d]waiting for %d " - "commands to complete\n",i,outstanding); - /* - * Call cmd completion routine. Cmd to be - * be completed directly without depending on isr. - */ - megasas_complete_cmd_dpc((unsigned long)instance); - } - - msleep(1000); - } - - if (atomic_read(&instance->fw_outstanding)) { - /* - * Send signal to FW to stop processing any pending cmds. - * The controller will be taken offline by the OS now. - */ - writel(MFI_STOP_ADP, - &instance->reg_set->inbound_doorbell); - megasas_dump_pending_frames(instance); - instance->hw_crit_error = 1; - return FAILED; - } - - return SUCCESS; -} - -/** - * megasas_generic_reset - Generic reset routine - * @scmd: Mid-layer SCSI command - * - * This routine implements a generic reset handler for device, bus and host - * reset requests. Device, bus and host specific reset handlers can use this - * function after they do their specific tasks. - */ -static int megasas_generic_reset(struct scsi_cmnd *scmd) -{ - int ret_val; - struct megasas_instance *instance; - - instance = (struct megasas_instance *)scmd->device->host->hostdata; - - scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n", - scmd->serial_number, scmd->cmnd[0], scmd->retries); - - if (instance->hw_crit_error) { - printk(KERN_ERR "megasas: cannot recover from previous reset " - "failures\n"); - return FAILED; - } - - ret_val = megasas_wait_for_outstanding(instance); - if (ret_val == SUCCESS) - printk(KERN_NOTICE "megasas: reset successful \n"); - else - printk(KERN_ERR "megasas: failed to do reset\n"); - - return ret_val; -} - -/** - * megasas_reset_timer - quiesce the adapter if required - * @scmd: scsi cmnd - * - * Sets the FW busy flag and reduces the host->can_queue if the - * cmd has not been completed within the timeout period. - */ -static enum -scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) -{ - struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr; - struct megasas_instance *instance; - unsigned long flags; - - if (time_after(jiffies, scmd->jiffies_at_alloc + - (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { - return EH_NOT_HANDLED; - } - - instance = cmd->instance; - if (!(instance->flag & MEGASAS_FW_BUSY)) { - /* FW is busy, throttle IO */ - spin_lock_irqsave(instance->host->host_lock, flags); - - instance->host->can_queue = 16; - instance->last_time = jiffies; - instance->flag |= MEGASAS_FW_BUSY; - - spin_unlock_irqrestore(instance->host->host_lock, flags); - } - return EH_RESET_TIMER; -} - -/** - * megasas_reset_device - Device reset handler entry point - */ -static int megasas_reset_device(struct scsi_cmnd *scmd) -{ - int ret; - - /* - * First wait for all commands to complete - */ - ret = megasas_generic_reset(scmd); - - return ret; -} - -/** - * megasas_reset_bus_host - Bus & host reset handler entry point - */ -static int megasas_reset_bus_host(struct scsi_cmnd *scmd) -{ - int ret; - - /* - * First wait for all commands to complete - */ - ret = megasas_generic_reset(scmd); - - return ret; -} - -/** - * megasas_bios_param - Returns disk geometry for a disk - * @sdev: device handle - * @bdev: block device - * @capacity: drive capacity - * @geom: geometry parameters - */ -static int -megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, - sector_t capacity, int geom[]) -{ - int heads; - int sectors; - sector_t cylinders; - unsigned long tmp; - /* Default heads (64) & sectors (32) */ - heads = 64; - sectors = 32; - - tmp = heads * sectors; - cylinders = capacity; - - sector_div(cylinders, tmp); - - /* - * Handle extended translation size for logical drives > 1Gb - */ - - if (capacity >= 0x200000) { - heads = 255; - sectors = 63; - tmp = heads*sectors; - cylinders = capacity; - sector_div(cylinders, tmp); - } - - geom[0] = heads; - geom[1] = sectors; - geom[2] = cylinders; - - return 0; -} - -/** - * megasas_service_aen - Processes an event notification - * @instance: Adapter soft state - * @cmd: AEN command completed by the ISR - * - * For AEN, driver sends a command down to FW that is held by the FW till an - * event occurs. When an event of interest occurs, FW completes the command - * that it was previously holding. - * - * This routines sends SIGIO signal to processes that have registered with the - * driver for AEN. - */ -static void -megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) -{ - /* - * Don't signal app if it is just an aborted previously registered aen - */ - if (!cmd->abort_aen) - kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); - else - cmd->abort_aen = 0; - - instance->aen_cmd = NULL; - megasas_return_cmd(instance, cmd); -} - -/* - * Scsi host template for megaraid_sas driver - */ -static struct scsi_host_template megasas_template = { - - .module = THIS_MODULE, - .name = "LSI SAS based MegaRAID driver", - .proc_name = "megaraid_sas", - .slave_configure = megasas_slave_configure, - .queuecommand = megasas_queue_command, - .eh_device_reset_handler = megasas_reset_device, - .eh_bus_reset_handler = megasas_reset_bus_host, - .eh_host_reset_handler = megasas_reset_bus_host, - .eh_timed_out = megasas_reset_timer, - .bios_param = megasas_bios_param, - .use_clustering = ENABLE_CLUSTERING, -}; - -/** - * megasas_complete_int_cmd - Completes an internal command - * @instance: Adapter soft state - * @cmd: Command to be completed - * - * The megasas_issue_blocked_cmd() function waits for a command to complete - * after it issues a command. This function wakes up that waiting routine by - * calling wake_up() on the wait queue. - */ -static void -megasas_complete_int_cmd(struct megasas_instance *instance, - struct megasas_cmd *cmd) -{ - cmd->cmd_status = cmd->frame->io.cmd_status; - - if (cmd->cmd_status == ENODATA) { - cmd->cmd_status = 0; - } - wake_up(&instance->int_cmd_wait_q); -} - -/** - * megasas_complete_abort - Completes aborting a command - * @instance: Adapter soft state - * @cmd: Cmd that was issued to abort another cmd - * - * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q - * after it issues an abort on a previously issued command. This function - * wakes up all functions waiting on the same wait queue. - */ -static void -megasas_complete_abort(struct megasas_instance *instance, - struct megasas_cmd *cmd) -{ - if (cmd->sync_cmd) { - cmd->sync_cmd = 0; - cmd->cmd_status = 0; - wake_up(&instance->abort_cmd_wait_q); - } - - return; -} - -/** - * megasas_complete_cmd - Completes a command - * @instance: Adapter soft state - * @cmd: Command to be completed - * @alt_status: If non-zero, use this value as status to - * SCSI mid-layer instead of the value returned - * by the FW. This should be used if caller wants - * an alternate status (as in the case of aborted - * commands) - */ -static void -megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, - u8 alt_status) -{ - int exception = 0; - struct megasas_header *hdr = &cmd->frame->hdr; - - if (cmd->scmd) - cmd->scmd->SCp.ptr = NULL; - - switch (hdr->cmd) { - - case MFI_CMD_PD_SCSI_IO: - case MFI_CMD_LD_SCSI_IO: - - /* - * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been - * issued either through an IO path or an IOCTL path. If it - * was via IOCTL, we will send it to internal completion. - */ - if (cmd->sync_cmd) { - cmd->sync_cmd = 0; - megasas_complete_int_cmd(instance, cmd); - break; - } - - case MFI_CMD_LD_READ: - case MFI_CMD_LD_WRITE: - - if (alt_status) { - cmd->scmd->result = alt_status << 16; - exception = 1; - } - - if (exception) { - - atomic_dec(&instance->fw_outstanding); - - scsi_dma_unmap(cmd->scmd); - cmd->scmd->scsi_done(cmd->scmd); - megasas_return_cmd(instance, cmd); - - break; - } - - switch (hdr->cmd_status) { - - case MFI_STAT_OK: - cmd->scmd->result = DID_OK << 16; - break; - - case MFI_STAT_SCSI_IO_FAILED: - case MFI_STAT_LD_INIT_IN_PROGRESS: - cmd->scmd->result = - (DID_ERROR << 16) | hdr->scsi_status; - break; - - case MFI_STAT_SCSI_DONE_WITH_ERROR: - - cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; - - if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { - memset(cmd->scmd->sense_buffer, 0, - SCSI_SENSE_BUFFERSIZE); - memcpy(cmd->scmd->sense_buffer, cmd->sense, - hdr->sense_len); - - cmd->scmd->result |= DRIVER_SENSE << 24; - } - - break; - - case MFI_STAT_LD_OFFLINE: - case MFI_STAT_DEVICE_NOT_FOUND: - cmd->scmd->result = DID_BAD_TARGET << 16; - break; - - default: - printk(KERN_DEBUG "megasas: MFI FW status %#x\n", - hdr->cmd_status); - cmd->scmd->result = DID_ERROR << 16; - break; - } - - atomic_dec(&instance->fw_outstanding); - - scsi_dma_unmap(cmd->scmd); - cmd->scmd->scsi_done(cmd->scmd); - megasas_return_cmd(instance, cmd); - - break; - - case MFI_CMD_SMP: - case MFI_CMD_STP: - case MFI_CMD_DCMD: - - /* - * See if got an event notification - */ - if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) - megasas_service_aen(instance, cmd); - else - megasas_complete_int_cmd(instance, cmd); - - break; - - case MFI_CMD_ABORT: - /* - * Cmd issued to abort another cmd returned - */ - megasas_complete_abort(instance, cmd); - break; - - default: - printk("megasas: Unknown command completed! [0x%X]\n", - hdr->cmd); - break; - } -} - -/** - * megasas_deplete_reply_queue - Processes all completed commands - * @instance: Adapter soft state - * @alt_status: Alternate status to be returned to - * SCSI mid-layer instead of the status - * returned by the FW - */ -static int -megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status) -{ - /* - * Check if it is our interrupt - * Clear the interrupt - */ - if(instance->instancet->clear_intr(instance->reg_set)) - return IRQ_NONE; - - if (instance->hw_crit_error) - goto out_done; - /* - * Schedule the tasklet for cmd completion - */ - tasklet_schedule(&instance->isr_tasklet); -out_done: - return IRQ_HANDLED; -} - -/** - * megasas_isr - isr entry point - */ -static irqreturn_t megasas_isr(int irq, void *devp) -{ - return megasas_deplete_reply_queue((struct megasas_instance *)devp, - DID_OK); -} - -/** - * megasas_transition_to_ready - Move the FW to READY state - * @instance: Adapter soft state - * - * During the initialization, FW passes can potentially be in any one of - * several possible states. If the FW in operational, waiting-for-handshake - * states, driver must take steps to bring it to ready state. Otherwise, it - * has to wait for the ready state. - */ -static int -megasas_transition_to_ready(struct megasas_instance* instance) -{ - int i; - u8 max_wait; - u32 fw_state; - u32 cur_state; - - fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; - - if (fw_state != MFI_STATE_READY) - printk(KERN_INFO "megasas: Waiting for FW to come to ready" - " state\n"); - - while (fw_state != MFI_STATE_READY) { - - switch (fw_state) { - - case MFI_STATE_FAULT: - - printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); - return -ENODEV; - - case MFI_STATE_WAIT_HANDSHAKE: - /* - * Set the CLR bit in inbound doorbell - */ - writel(MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, - &instance->reg_set->inbound_doorbell); - - max_wait = 2; - cur_state = MFI_STATE_WAIT_HANDSHAKE; - break; - - case MFI_STATE_BOOT_MESSAGE_PENDING: - writel(MFI_INIT_HOTPLUG, - &instance->reg_set->inbound_doorbell); - - max_wait = 10; - cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; - break; - - case MFI_STATE_OPERATIONAL: - /* - * Bring it to READY state; assuming max wait 10 secs - */ - instance->instancet->disable_intr(instance->reg_set); - writel(MFI_RESET_FLAGS, &instance->reg_set->inbound_doorbell); - - max_wait = 60; - cur_state = MFI_STATE_OPERATIONAL; - break; - - case MFI_STATE_UNDEFINED: - /* - * This state should not last for more than 2 seconds - */ - max_wait = 2; - cur_state = MFI_STATE_UNDEFINED; - break; - - case MFI_STATE_BB_INIT: - max_wait = 2; - cur_state = MFI_STATE_BB_INIT; - break; - - case MFI_STATE_FW_INIT: - max_wait = 20; - cur_state = MFI_STATE_FW_INIT; - break; - - case MFI_STATE_FW_INIT_2: - max_wait = 20; - cur_state = MFI_STATE_FW_INIT_2; - break; - - case MFI_STATE_DEVICE_SCAN: - max_wait = 20; - cur_state = MFI_STATE_DEVICE_SCAN; - break; - - case MFI_STATE_FLUSH_CACHE: - max_wait = 20; - cur_state = MFI_STATE_FLUSH_CACHE; - break; - - default: - printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", - fw_state); - return -ENODEV; - } - - /* - * The cur_state should not last for more than max_wait secs - */ - for (i = 0; i < (max_wait * 1000); i++) { - fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & - MFI_STATE_MASK ; - - if (fw_state == cur_state) { - msleep(1); - } else - break; - } - - /* - * Return error if fw_state hasn't changed after max_wait - */ - if (fw_state == cur_state) { - printk(KERN_DEBUG "FW state [%d] hasn't changed " - "in %d secs\n", fw_state, max_wait); - return -ENODEV; - } - }; - printk(KERN_INFO "megasas: FW now in Ready state\n"); - - return 0; -} - -/** - * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool - * @instance: Adapter soft state - */ -static void megasas_teardown_frame_pool(struct megasas_instance *instance) -{ - int i; - u32 max_cmd = instance->max_fw_cmds; - struct megasas_cmd *cmd; - - if (!instance->frame_dma_pool) - return; - - /* - * Return all frames to pool - */ - for (i = 0; i < max_cmd; i++) { - - cmd = instance->cmd_list[i]; - - if (cmd->frame) - pci_pool_free(instance->frame_dma_pool, cmd->frame, - cmd->frame_phys_addr); - - if (cmd->sense) - pci_pool_free(instance->sense_dma_pool, cmd->sense, - cmd->sense_phys_addr); - } - - /* - * Now destroy the pool itself - */ - pci_pool_destroy(instance->frame_dma_pool); - pci_pool_destroy(instance->sense_dma_pool); - - instance->frame_dma_pool = NULL; - instance->sense_dma_pool = NULL; -} - -/** - * megasas_create_frame_pool - Creates DMA pool for cmd frames - * @instance: Adapter soft state - * - * Each command packet has an embedded DMA memory buffer that is used for - * filling MFI frame and the SG list that immediately follows the frame. This - * function creates those DMA memory buffers for each command packet by using - * PCI pool facility. - */ -static int megasas_create_frame_pool(struct megasas_instance *instance) -{ - int i; - u32 max_cmd; - u32 sge_sz; - u32 sgl_sz; - u32 total_sz; - u32 frame_count; - struct megasas_cmd *cmd; - - max_cmd = instance->max_fw_cmds; - - /* - * Size of our frame is 64 bytes for MFI frame, followed by max SG - * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer - */ - sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : - sizeof(struct megasas_sge32); - - /* - * Calculated the number of 64byte frames required for SGL - */ - sgl_sz = sge_sz * instance->max_num_sge; - frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; - - /* - * We need one extra frame for the MFI command - */ - frame_count++; - - total_sz = MEGAMFI_FRAME_SIZE * frame_count; - /* - * Use DMA pool facility provided by PCI layer - */ - instance->frame_dma_pool = pci_pool_create("megasas frame pool", - instance->pdev, total_sz, 64, - 0); - - if (!instance->frame_dma_pool) { - printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); - return -ENOMEM; - } - - instance->sense_dma_pool = pci_pool_create("megasas sense pool", - instance->pdev, 128, 4, 0); - - if (!instance->sense_dma_pool) { - printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); - - pci_pool_destroy(instance->frame_dma_pool); - instance->frame_dma_pool = NULL; - - return -ENOMEM; - } - - /* - * Allocate and attach a frame to each of the commands in cmd_list. - * By making cmd->index as the context instead of the &cmd, we can - * always use 32bit context regardless of the architecture - */ - for (i = 0; i < max_cmd; i++) { - - cmd = instance->cmd_list[i]; - - cmd->frame = pci_pool_alloc(instance->frame_dma_pool, - GFP_KERNEL, &cmd->frame_phys_addr); - - cmd->sense = pci_pool_alloc(instance->sense_dma_pool, - GFP_KERNEL, &cmd->sense_phys_addr); - - /* - * megasas_teardown_frame_pool() takes care of freeing - * whatever has been allocated - */ - if (!cmd->frame || !cmd->sense) { - printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); - megasas_teardown_frame_pool(instance); - return -ENOMEM; - } - - cmd->frame->io.context = cmd->index; - } - - return 0; -} - -/** - * megasas_free_cmds - Free all the cmds in the free cmd pool - * @instance: Adapter soft state - */ -static void megasas_free_cmds(struct megasas_instance *instance) -{ - int i; - /* First free the MFI frame pool */ - megasas_teardown_frame_pool(instance); - - /* Free all the commands in the cmd_list */ - for (i = 0; i < instance->max_fw_cmds; i++) - kfree(instance->cmd_list[i]); - - /* Free the cmd_list buffer itself */ - kfree(instance->cmd_list); - instance->cmd_list = NULL; - - INIT_LIST_HEAD(&instance->cmd_pool); -} - -/** - * megasas_alloc_cmds - Allocates the command packets - * @instance: Adapter soft state - * - * Each command that is issued to the FW, whether IO commands from the OS or - * internal commands like IOCTLs, are wrapped in local data structure called - * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to - * the FW. - * - * Each frame has a 32-bit field called context (tag). This context is used - * to get back the megasas_cmd from the frame when a frame gets completed in - * the ISR. Typically the address of the megasas_cmd itself would be used as - * the context. But we wanted to keep the differences between 32 and 64 bit - * systems to the mininum. We always use 32 bit integers for the context. In - * this driver, the 32 bit values are the indices into an array cmd_list. - * This array is used only to look up the megasas_cmd given the context. The - * free commands themselves are maintained in a linked list called cmd_pool. - */ -static int megasas_alloc_cmds(struct megasas_instance *instance) -{ - int i; - int j; - u32 max_cmd; - struct megasas_cmd *cmd; - - max_cmd = instance->max_fw_cmds; - - /* - * instance->cmd_list is an array of struct megasas_cmd pointers. - * Allocate the dynamic array first and then allocate individual - * commands. - */ - instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); - - if (!instance->cmd_list) { - printk(KERN_DEBUG "megasas: out of memory\n"); - return -ENOMEM; - } - - - for (i = 0; i < max_cmd; i++) { - instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), - GFP_KERNEL); - - if (!instance->cmd_list[i]) { - - for (j = 0; j < i; j++) - kfree(instance->cmd_list[j]); - - kfree(instance->cmd_list); - instance->cmd_list = NULL; - - return -ENOMEM; - } - } - - /* - * Add all the commands to command pool (instance->cmd_pool) - */ - for (i = 0; i < max_cmd; i++) { - cmd = instance->cmd_list[i]; - memset(cmd, 0, sizeof(struct megasas_cmd)); - cmd->index = i; - cmd->instance = instance; - - list_add_tail(&cmd->list, &instance->cmd_pool); - } - - /* - * Create a frame pool and assign one frame to each cmd - */ - if (megasas_create_frame_pool(instance)) { - printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); - megasas_free_cmds(instance); - } - - return 0; -} - -/** - * megasas_get_controller_info - Returns FW's controller structure - * @instance: Adapter soft state - * @ctrl_info: Controller information structure - * - * Issues an internal command (DCMD) to get the FW's controller structure. - * This information is mainly used to find out the maximum IO transfer per - * command supported by the FW. - */ -static int -megasas_get_ctrl_info(struct megasas_instance *instance, - struct megasas_ctrl_info *ctrl_info) -{ - int ret = 0; - struct megasas_cmd *cmd; - struct megasas_dcmd_frame *dcmd; - struct megasas_ctrl_info *ci; - dma_addr_t ci_h = 0; - - cmd = megasas_get_cmd(instance); - - if (!cmd) { - printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); - return -ENOMEM; - } - - dcmd = &cmd->frame->dcmd; - - ci = pci_alloc_consistent(instance->pdev, - sizeof(struct megasas_ctrl_info), &ci_h); - - if (!ci) { - printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); - megasas_return_cmd(instance, cmd); - return -ENOMEM; - } - - memset(ci, 0, sizeof(*ci)); - memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); - - dcmd->cmd = MFI_CMD_DCMD; - dcmd->cmd_status = 0xFF; - dcmd->sge_count = 1; - dcmd->flags = MFI_FRAME_DIR_READ; - dcmd->timeout = 0; - dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); - dcmd->opcode = MR_DCMD_CTRL_GET_INFO; - dcmd->sgl.sge32[0].phys_addr = ci_h; - dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); - - if (!megasas_issue_polled(instance, cmd)) { - ret = 0; - memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); - } else { - ret = -1; - } - - pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), - ci, ci_h); - - megasas_return_cmd(instance, cmd); - return ret; -} - -/** - * megasas_issue_init_mfi - Initializes the FW - * @instance: Adapter soft state - * - * Issues the INIT MFI cmd - */ -static int -megasas_issue_init_mfi(struct megasas_instance *instance) -{ - u32 context; - - struct megasas_cmd *cmd; - - struct megasas_init_frame *init_frame; - struct megasas_init_queue_info *initq_info; - dma_addr_t init_frame_h; - dma_addr_t initq_info_h; - - /* - * Prepare a init frame. Note the init frame points to queue info - * structure. Each frame has SGL allocated after first 64 bytes. For - * this frame - since we don't need any SGL - we use SGL's space as - * queue info structure - * - * We will not get a NULL command below. We just created the pool. - */ - cmd = megasas_get_cmd(instance); - - init_frame = (struct megasas_init_frame *)cmd->frame; - initq_info = (struct megasas_init_queue_info *) - ((unsigned long)init_frame + 64); - - init_frame_h = cmd->frame_phys_addr; - initq_info_h = init_frame_h + 64; - - context = init_frame->context; - memset(init_frame, 0, MEGAMFI_FRAME_SIZE); - memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); - init_frame->context = context; - - initq_info->reply_queue_entries = instance->max_fw_cmds + 1; - initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; - - initq_info->producer_index_phys_addr_lo = instance->producer_h; - initq_info->consumer_index_phys_addr_lo = instance->consumer_h; - - init_frame->cmd = MFI_CMD_INIT; - init_frame->cmd_status = 0xFF; - init_frame->queue_info_new_phys_addr_lo = initq_info_h; - - init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); - - /* - * disable the intr before firing the init frame to FW - */ - instance->instancet->disable_intr(instance->reg_set); - - /* - * Issue the init frame in polled mode - */ - - if (megasas_issue_polled(instance, cmd)) { - printk(KERN_ERR "megasas: Failed to init firmware\n"); - megasas_return_cmd(instance, cmd); - goto fail_fw_init; - } - - megasas_return_cmd(instance, cmd); - - return 0; - -fail_fw_init: - return -EINVAL; -} - -/** - * megasas_start_timer - Initializes a timer object - * @instance: Adapter soft state - * @timer: timer object to be initialized - * @fn: timer function - * @interval: time interval between timer function call - */ -static inline void -megasas_start_timer(struct megasas_instance *instance, - struct timer_list *timer, - void *fn, unsigned long interval) -{ - init_timer(timer); - timer->expires = jiffies + interval; - timer->data = (unsigned long)instance; - timer->function = fn; - add_timer(timer); -} - -/** - * megasas_io_completion_timer - Timer fn - * @instance_addr: Address of adapter soft state - * - * Schedules tasklet for cmd completion - * if poll_mode_io is set - */ -static void -megasas_io_completion_timer(unsigned long instance_addr) -{ - struct megasas_instance *instance = - (struct megasas_instance *)instance_addr; - - if (atomic_read(&instance->fw_outstanding)) - tasklet_schedule(&instance->isr_tasklet); - - /* Restart timer */ - if (poll_mode_io) - mod_timer(&instance->io_completion_timer, - jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL); -} - -/** - * megasas_init_mfi - Initializes the FW - * @instance: Adapter soft state - * - * This is the main function for initializing MFI firmware. - */ -static int megasas_init_mfi(struct megasas_instance *instance) -{ - u32 context_sz; - u32 reply_q_sz; - u32 max_sectors_1; - u32 max_sectors_2; - u32 tmp_sectors; - struct megasas_register_set __iomem *reg_set; - struct megasas_ctrl_info *ctrl_info; - /* - * Map the message registers - */ - instance->base_addr = pci_resource_start(instance->pdev, 0); - - if (pci_request_regions(instance->pdev, "megasas: LSI")) { - printk(KERN_DEBUG "megasas: IO memory region busy!\n"); - return -EBUSY; - } - - instance->reg_set = ioremap_nocache(instance->base_addr, 8192); - - if (!instance->reg_set) { - printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); - goto fail_ioremap; - } - - reg_set = instance->reg_set; - - switch(instance->pdev->device) - { - case PCI_DEVICE_ID_LSI_SAS1078R: - case PCI_DEVICE_ID_LSI_SAS1078DE: - instance->instancet = &megasas_instance_template_ppc; - break; - case PCI_DEVICE_ID_LSI_SAS1064R: - case PCI_DEVICE_ID_DELL_PERC5: - default: - instance->instancet = &megasas_instance_template_xscale; - break; - } - - /* - * We expect the FW state to be READY - */ - if (megasas_transition_to_ready(instance)) - goto fail_ready_state; - - /* - * Get various operational parameters from status register - */ - instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; - /* - * Reduce the max supported cmds by 1. This is to ensure that the - * reply_q_sz (1 more than the max cmd that driver may send) - * does not exceed max cmds that the FW can support - */ - instance->max_fw_cmds = instance->max_fw_cmds-1; - instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> - 0x10; - /* - * Create a pool of commands - */ - if (megasas_alloc_cmds(instance)) - goto fail_alloc_cmds; - - /* - * Allocate memory for reply queue. Length of reply queue should - * be _one_ more than the maximum commands handled by the firmware. - * - * Note: When FW completes commands, it places corresponding contex - * values in this circular reply queue. This circular queue is a fairly - * typical producer-consumer queue. FW is the producer (of completed - * commands) and the driver is the consumer. - */ - context_sz = sizeof(u32); - reply_q_sz = context_sz * (instance->max_fw_cmds + 1); - - instance->reply_queue = pci_alloc_consistent(instance->pdev, - reply_q_sz, - &instance->reply_queue_h); - - if (!instance->reply_queue) { - printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); - goto fail_reply_queue; - } - - if (megasas_issue_init_mfi(instance)) - goto fail_fw_init; - - ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); - - /* - * Compute the max allowed sectors per IO: The controller info has two - * limits on max sectors. Driver should use the minimum of these two. - * - * 1 << stripe_sz_ops.min = max sectors per strip - * - * Note that older firmwares ( < FW ver 30) didn't report information - * to calculate max_sectors_1. So the number ended up as zero always. - */ - tmp_sectors = 0; - if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { - - max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * - ctrl_info->max_strips_per_io; - max_sectors_2 = ctrl_info->max_request_size; - - tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); - } - - instance->max_sectors_per_req = instance->max_num_sge * - PAGE_SIZE / 512; - if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) - instance->max_sectors_per_req = tmp_sectors; - - kfree(ctrl_info); - - /* - * Setup tasklet for cmd completion - */ - - tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, - (unsigned long)instance); - - /* Initialize the cmd completion timer */ - if (poll_mode_io) - megasas_start_timer(instance, &instance->io_completion_timer, - megasas_io_completion_timer, - MEGASAS_COMPLETION_TIMER_INTERVAL); - return 0; - - fail_fw_init: - - pci_free_consistent(instance->pdev, reply_q_sz, - instance->reply_queue, instance->reply_queue_h); - fail_reply_queue: - megasas_free_cmds(instance); - - fail_alloc_cmds: - fail_ready_state: - iounmap(instance->reg_set); - - fail_ioremap: - pci_release_regions(instance->pdev); - - return -EINVAL; -} - -/** - * megasas_release_mfi - Reverses the FW initialization - * @intance: Adapter soft state - */ -static void megasas_release_mfi(struct megasas_instance *instance) -{ - u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1); - - pci_free_consistent(instance->pdev, reply_q_sz, - instance->reply_queue, instance->reply_queue_h); - - megasas_free_cmds(instance); - - iounmap(instance->reg_set); - - pci_release_regions(instance->pdev); -} - -/** - * megasas_get_seq_num - Gets latest event sequence numbers - * @instance: Adapter soft state - * @eli: FW event log sequence numbers information - * - * FW maintains a log of all events in a non-volatile area. Upper layers would - * usually find out the latest sequence number of the events, the seq number at - * the boot etc. They would "read" all the events below the latest seq number - * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq - * number), they would subsribe to AEN (asynchronous event notification) and - * wait for the events to happen. - */ -static int -megasas_get_seq_num(struct megasas_instance *instance, - struct megasas_evt_log_info *eli) -{ - struct megasas_cmd *cmd; - struct megasas_dcmd_frame *dcmd; - struct megasas_evt_log_info *el_info; - dma_addr_t el_info_h = 0; - - cmd = megasas_get_cmd(instance); - - if (!cmd) { - return -ENOMEM; - } - - dcmd = &cmd->frame->dcmd; - el_info = pci_alloc_consistent(instance->pdev, - sizeof(struct megasas_evt_log_info), - &el_info_h); - - if (!el_info) { - megasas_return_cmd(instance, cmd); - return -ENOMEM; - } - - memset(el_info, 0, sizeof(*el_info)); - memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); - - dcmd->cmd = MFI_CMD_DCMD; - dcmd->cmd_status = 0x0; - dcmd->sge_count = 1; - dcmd->flags = MFI_FRAME_DIR_READ; - dcmd->timeout = 0; - dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); - dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; - dcmd->sgl.sge32[0].phys_addr = el_info_h; - dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); - - megasas_issue_blocked_cmd(instance, cmd); - - /* - * Copy the data back into callers buffer - */ - memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); - - pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), - el_info, el_info_h); - - megasas_return_cmd(instance, cmd); - - return 0; -} - -/** - * megasas_register_aen - Registers for asynchronous event notification - * @instance: Adapter soft state - * @seq_num: The starting sequence number - * @class_locale: Class of the event - * - * This function subscribes for AEN for events beyond the @seq_num. It requests - * to be notified if and only if the event is of type @class_locale - */ -static int -megasas_register_aen(struct megasas_instance *instance, u32 seq_num, - u32 class_locale_word) -{ - int ret_val; - struct megasas_cmd *cmd; - struct megasas_dcmd_frame *dcmd; - union megasas_evt_class_locale curr_aen; - union megasas_evt_class_locale prev_aen; - - /* - * If there an AEN pending already (aen_cmd), check if the - * class_locale of that pending AEN is inclusive of the new - * AEN request we currently have. If it is, then we don't have - * to do anything. In other words, whichever events the current - * AEN request is subscribing to, have already been subscribed - * to. - * - * If the old_cmd is _not_ inclusive, then we have to abort - * that command, form a class_locale that is superset of both - * old and current and re-issue to the FW - */ - - curr_aen.word = class_locale_word; - - if (instance->aen_cmd) { - - prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; - - /* - * A class whose enum value is smaller is inclusive of all - * higher values. If a PROGRESS (= -1) was previously - * registered, then a new registration requests for higher - * classes need not be sent to FW. They are automatically - * included. - * - * Locale numbers don't have such hierarchy. They are bitmap - * values - */ - if ((prev_aen.members.class <= curr_aen.members.class) && - !((prev_aen.members.locale & curr_aen.members.locale) ^ - curr_aen.members.locale)) { - /* - * Previously issued event registration includes - * current request. Nothing to do. - */ - return 0; - } else { - curr_aen.members.locale |= prev_aen.members.locale; - - if (prev_aen.members.class < curr_aen.members.class) - curr_aen.members.class = prev_aen.members.class; - - instance->aen_cmd->abort_aen = 1; - ret_val = megasas_issue_blocked_abort_cmd(instance, - instance-> - aen_cmd); - - if (ret_val) { - printk(KERN_DEBUG "megasas: Failed to abort " - "previous AEN command\n"); - return ret_val; - } - } - } - - cmd = megasas_get_cmd(instance); - - if (!cmd) - return -ENOMEM; - - dcmd = &cmd->frame->dcmd; - - memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); - - /* - * Prepare DCMD for aen registration - */ - memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); - - dcmd->cmd = MFI_CMD_DCMD; - dcmd->cmd_status = 0x0; - dcmd->sge_count = 1; - dcmd->flags = MFI_FRAME_DIR_READ; - dcmd->timeout = 0; - dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); - dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; - dcmd->mbox.w[0] = seq_num; - dcmd->mbox.w[1] = curr_aen.word; - dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; - dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); - - /* - * Store reference to the cmd used to register for AEN. When an - * application wants us to register for AEN, we have to abort this - * cmd and re-register with a new EVENT LOCALE supplied by that app - */ - instance->aen_cmd = cmd; - - /* - * Issue the aen registration frame - */ - instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set); - - return 0; -} - -/** - * megasas_start_aen - Subscribes to AEN during driver load time - * @instance: Adapter soft state - */ -static int megasas_start_aen(struct megasas_instance *instance) -{ - struct megasas_evt_log_info eli; - union megasas_evt_class_locale class_locale; - - /* - * Get the latest sequence number from FW - */ - memset(&eli, 0, sizeof(eli)); - - if (megasas_get_seq_num(instance, &eli)) - return -1; - - /* - * Register AEN with FW for latest sequence number plus 1 - */ - class_locale.members.reserved = 0; - class_locale.members.locale = MR_EVT_LOCALE_ALL; - class_locale.members.class = MR_EVT_CLASS_DEBUG; - - return megasas_register_aen(instance, eli.newest_seq_num + 1, - class_locale.word); -} - -/** - * megasas_io_attach - Attaches this driver to SCSI mid-layer - * @instance: Adapter soft state - */ -static int megasas_io_attach(struct megasas_instance *instance) -{ - struct Scsi_Host *host = instance->host; - - /* - * Export parameters required by SCSI mid-layer - */ - host->irq = instance->pdev->irq; - host->unique_id = instance->unique_id; - host->can_queue = instance->max_fw_cmds - MEGASAS_INT_CMDS; - host->this_id = instance->init_id; - host->sg_tablesize = instance->max_num_sge; - host->max_sectors = instance->max_sectors_per_req; - host->cmd_per_lun = 128; - host->max_channel = MEGASAS_MAX_CHANNELS - 1; - host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; - host->max_lun = MEGASAS_MAX_LUN; - host->max_cmd_len = 16; - - /* - * Notify the mid-layer about the new controller - */ - if (scsi_add_host(host, &instance->pdev->dev)) { - printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); - return -ENODEV; - } - - /* - * Trigger SCSI to scan our drives - */ - scsi_scan_host(host); - return 0; -} - -static int -megasas_set_dma_mask(struct pci_dev *pdev) -{ - /* - * All our contollers are capable of performing 64-bit DMA - */ - if (IS_DMA64) { - if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) != 0) { - - if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) - goto fail_set_dma_mask; - } - } else { - if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) - goto fail_set_dma_mask; - } - return 0; - -fail_set_dma_mask: - return 1; -} - -/** - * megasas_probe_one - PCI hotplug entry point - * @pdev: PCI device structure - * @id: PCI ids of supported hotplugged adapter - */ -static int __devinit -megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) -{ - int rval; - struct Scsi_Host *host; - struct megasas_instance *instance; - - /* - * Announce PCI information - */ - printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", - pdev->vendor, pdev->device, pdev->subsystem_vendor, - pdev->subsystem_device); - - printk("bus %d:slot %d:func %d\n", - pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); - - /* - * PCI prepping: enable device set bus mastering and dma mask - */ - rval = pci_enable_device(pdev); - - if (rval) { - return rval; - } - - pci_set_master(pdev); - - if (megasas_set_dma_mask(pdev)) - goto fail_set_dma_mask; - - host = scsi_host_alloc(&megasas_template, - sizeof(struct megasas_instance)); - - if (!host) { - printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); - goto fail_alloc_instance; - } - - instance = (struct megasas_instance *)host->hostdata; - memset(instance, 0, sizeof(*instance)); - - instance->producer = pci_alloc_consistent(pdev, sizeof(u32), - &instance->producer_h); - instance->consumer = pci_alloc_consistent(pdev, sizeof(u32), - &instance->consumer_h); - - if (!instance->producer || !instance->consumer) { - printk(KERN_DEBUG "megasas: Failed to allocate memory for " - "producer, consumer\n"); - goto fail_alloc_dma_buf; - } - - *instance->producer = 0; - *instance->consumer = 0; - - instance->evt_detail = pci_alloc_consistent(pdev, - sizeof(struct - megasas_evt_detail), - &instance->evt_detail_h); - - if (!instance->evt_detail) { - printk(KERN_DEBUG "megasas: Failed to allocate memory for " - "event detail structure\n"); - goto fail_alloc_dma_buf; - } - - /* - * Initialize locks and queues - */ - INIT_LIST_HEAD(&instance->cmd_pool); - - atomic_set(&instance->fw_outstanding,0); - - init_waitqueue_head(&instance->int_cmd_wait_q); - init_waitqueue_head(&instance->abort_cmd_wait_q); - - spin_lock_init(&instance->cmd_pool_lock); - spin_lock_init(&instance->completion_lock); - - mutex_init(&instance->aen_mutex); - sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); - - /* - * Initialize PCI related and misc parameters - */ - instance->pdev = pdev; - instance->host = host; - instance->unique_id = pdev->bus->number << 8 | pdev->devfn; - instance->init_id = MEGASAS_DEFAULT_INIT_ID; - - megasas_dbg_lvl = 0; - instance->flag = 0; - instance->last_time = 0; - - /* - * Initialize MFI Firmware - */ - if (megasas_init_mfi(instance)) - goto fail_init_mfi; - - /* - * Register IRQ - */ - if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, "megasas", instance)) { - printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); - goto fail_irq; - } - - instance->instancet->enable_intr(instance->reg_set); - - /* - * Store instance in PCI softstate - */ - pci_set_drvdata(pdev, instance); - - /* - * Add this controller to megasas_mgmt_info structure so that it - * can be exported to management applications - */ - megasas_mgmt_info.count++; - megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; - megasas_mgmt_info.max_index++; - - /* - * Initiate AEN (Asynchronous Event Notification) - */ - if (megasas_start_aen(instance)) { - printk(KERN_DEBUG "megasas: start aen failed\n"); - goto fail_start_aen; - } - - /* - * Register with SCSI mid-layer - */ - if (megasas_io_attach(instance)) - goto fail_io_attach; - - return 0; - - fail_start_aen: - fail_io_attach: - megasas_mgmt_info.count--; - megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; - megasas_mgmt_info.max_index--; - - pci_set_drvdata(pdev, NULL); - instance->instancet->disable_intr(instance->reg_set); - free_irq(instance->pdev->irq, instance); - - megasas_release_mfi(instance); - - fail_irq: - fail_init_mfi: - fail_alloc_dma_buf: - if (instance->evt_detail) - pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), - instance->evt_detail, - instance->evt_detail_h); - - if (instance->producer) - pci_free_consistent(pdev, sizeof(u32), instance->producer, - instance->producer_h); - if (instance->consumer) - pci_free_consistent(pdev, sizeof(u32), instance->consumer, - instance->consumer_h); - scsi_host_put(host); - - fail_alloc_instance: - fail_set_dma_mask: - pci_disable_device(pdev); - - return -ENODEV; -} - -/** - * megasas_flush_cache - Requests FW to flush all its caches - * @instance: Adapter soft state - */ -static void megasas_flush_cache(struct megasas_instance *instance) -{ - struct megasas_cmd *cmd; - struct megasas_dcmd_frame *dcmd; - - cmd = megasas_get_cmd(instance); - - if (!cmd) - return; - - dcmd = &cmd->frame->dcmd; - - memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); - - dcmd->cmd = MFI_CMD_DCMD; - dcmd->cmd_status = 0x0; - dcmd->sge_count = 0; - dcmd->flags = MFI_FRAME_DIR_NONE; - dcmd->timeout = 0; - dcmd->data_xfer_len = 0; - dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; - dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; - - megasas_issue_blocked_cmd(instance, cmd); - - megasas_return_cmd(instance, cmd); - - return; -} - -/** - * megasas_shutdown_controller - Instructs FW to shutdown the controller - * @instance: Adapter soft state - * @opcode: Shutdown/Hibernate - */ -static void megasas_shutdown_controller(struct megasas_instance *instance, - u32 opcode) -{ - struct megasas_cmd *cmd; - struct megasas_dcmd_frame *dcmd; - - cmd = megasas_get_cmd(instance); - - if (!cmd) - return; - - if (instance->aen_cmd) - megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); - - dcmd = &cmd->frame->dcmd; - - memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); - - dcmd->cmd = MFI_CMD_DCMD; - dcmd->cmd_status = 0x0; - dcmd->sge_count = 0; - dcmd->flags = MFI_FRAME_DIR_NONE; - dcmd->timeout = 0; - dcmd->data_xfer_len = 0; - dcmd->opcode = opcode; - - megasas_issue_blocked_cmd(instance, cmd); - - megasas_return_cmd(instance, cmd); - - return; -} - -#ifdef CONFIG_PM -/** - * megasas_suspend - driver suspend entry point - * @pdev: PCI device structure - * @state: PCI power state to suspend routine - */ -static int -megasas_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct Scsi_Host *host; - struct megasas_instance *instance; - - instance = pci_get_drvdata(pdev); - host = instance->host; - - if (poll_mode_io) - del_timer_sync(&instance->io_completion_timer); - - megasas_flush_cache(instance); - megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); - tasklet_kill(&instance->isr_tasklet); - - pci_set_drvdata(instance->pdev, instance); - instance->instancet->disable_intr(instance->reg_set); - free_irq(instance->pdev->irq, instance); - - pci_save_state(pdev); - pci_disable_device(pdev); - - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - - return 0; -} - -/** - * megasas_resume- driver resume entry point - * @pdev: PCI device structure - */ -static int -megasas_resume(struct pci_dev *pdev) -{ - int rval; - struct Scsi_Host *host; - struct megasas_instance *instance; - - instance = pci_get_drvdata(pdev); - host = instance->host; - pci_set_power_state(pdev, PCI_D0); - pci_enable_wake(pdev, PCI_D0, 0); - pci_restore_state(pdev); - - /* - * PCI prepping: enable device set bus mastering and dma mask - */ - rval = pci_enable_device(pdev); - - if (rval) { - printk(KERN_ERR "megasas: Enable device failed\n"); - return rval; - } - - pci_set_master(pdev); - - if (megasas_set_dma_mask(pdev)) - goto fail_set_dma_mask; - - /* - * Initialize MFI Firmware - */ - - *instance->producer = 0; - *instance->consumer = 0; - - atomic_set(&instance->fw_outstanding, 0); - - /* - * We expect the FW state to be READY - */ - if (megasas_transition_to_ready(instance)) - goto fail_ready_state; - - if (megasas_issue_init_mfi(instance)) - goto fail_init_mfi; - - tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, - (unsigned long)instance); - - /* - * Register IRQ - */ - if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, - "megasas", instance)) { - printk(KERN_ERR "megasas: Failed to register IRQ\n"); - goto fail_irq; - } - - instance->instancet->enable_intr(instance->reg_set); - - /* - * Initiate AEN (Asynchronous Event Notification) - */ - if (megasas_start_aen(instance)) - printk(KERN_ERR "megasas: Start AEN failed\n"); - - /* Initialize the cmd completion timer */ - if (poll_mode_io) - megasas_start_timer(instance, &instance->io_completion_timer, - megasas_io_completion_timer, - MEGASAS_COMPLETION_TIMER_INTERVAL); - return 0; - -fail_irq: -fail_init_mfi: - if (instance->evt_detail) - pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), - instance->evt_detail, - instance->evt_detail_h); - - if (instance->producer) - pci_free_consistent(pdev, sizeof(u32), instance->producer, - instance->producer_h); - if (instance->consumer) - pci_free_consistent(pdev, sizeof(u32), instance->consumer, - instance->consumer_h); - scsi_host_put(host); - -fail_set_dma_mask: -fail_ready_state: - - pci_disable_device(pdev); - - return -ENODEV; -} -#else -#define megasas_suspend NULL -#define megasas_resume NULL -#endif - -/** - * megasas_detach_one - PCI hot"un"plug entry point - * @pdev: PCI device structure - */ -static void __devexit megasas_detach_one(struct pci_dev *pdev) -{ - int i; - struct Scsi_Host *host; - struct megasas_instance *instance; - - instance = pci_get_drvdata(pdev); - host = instance->host; - - if (poll_mode_io) - del_timer_sync(&instance->io_completion_timer); - - scsi_remove_host(instance->host); - megasas_flush_cache(instance); - megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); - tasklet_kill(&instance->isr_tasklet); - - /* - * Take the instance off the instance array. Note that we will not - * decrement the max_index. We let this array be sparse array - */ - for (i = 0; i < megasas_mgmt_info.max_index; i++) { - if (megasas_mgmt_info.instance[i] == instance) { - megasas_mgmt_info.count--; - megasas_mgmt_info.instance[i] = NULL; - - break; - } - } - - pci_set_drvdata(instance->pdev, NULL); - - instance->instancet->disable_intr(instance->reg_set); - - free_irq(instance->pdev->irq, instance); - - megasas_release_mfi(instance); - - pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), - instance->evt_detail, instance->evt_detail_h); - - pci_free_consistent(pdev, sizeof(u32), instance->producer, - instance->producer_h); - - pci_free_consistent(pdev, sizeof(u32), instance->consumer, - instance->consumer_h); - - scsi_host_put(host); - - pci_set_drvdata(pdev, NULL); - - pci_disable_device(pdev); - - return; -} - -/** - * megasas_shutdown - Shutdown entry point - * @device: Generic device structure - */ -static void megasas_shutdown(struct pci_dev *pdev) -{ - struct megasas_instance *instance = pci_get_drvdata(pdev); - megasas_flush_cache(instance); -} - -/** - * megasas_mgmt_open - char node "open" entry point - */ -static int megasas_mgmt_open(struct inode *inode, struct file *filep) -{ - cycle_kernel_lock(); - /* - * Allow only those users with admin rights - */ - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - - return 0; -} - -/** - * megasas_mgmt_release - char node "release" entry point - */ -static int megasas_mgmt_release(struct inode *inode, struct file *filep) -{ - filep->private_data = NULL; - fasync_helper(-1, filep, 0, &megasas_async_queue); - - return 0; -} - -/** - * megasas_mgmt_fasync - Async notifier registration from applications - * - * This function adds the calling process to a driver global queue. When an - * event occurs, SIGIO will be sent to all processes in this queue. - */ -static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) -{ - int rc; - - mutex_lock(&megasas_async_queue_mutex); - - rc = fasync_helper(fd, filep, mode, &megasas_async_queue); - - mutex_unlock(&megasas_async_queue_mutex); - - if (rc >= 0) { - /* For sanity check when we get ioctl */ - filep->private_data = filep; - return 0; - } - - printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); - - return rc; -} - -/** - * megasas_mgmt_fw_ioctl - Issues management ioctls to FW - * @instance: Adapter soft state - * @argp: User's ioctl packet - */ -static int -megasas_mgmt_fw_ioctl(struct megasas_instance *instance, - struct megasas_iocpacket __user * user_ioc, - struct megasas_iocpacket *ioc) -{ - struct megasas_sge32 *kern_sge32; - struct megasas_cmd *cmd; - void *kbuff_arr[MAX_IOCTL_SGE]; - dma_addr_t buf_handle = 0; - int error = 0, i; - void *sense = NULL; - dma_addr_t sense_handle; - u32 *sense_ptr; - - memset(kbuff_arr, 0, sizeof(kbuff_arr)); - - if (ioc->sge_count > MAX_IOCTL_SGE) { - printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", - ioc->sge_count, MAX_IOCTL_SGE); - return -EINVAL; - } - - cmd = megasas_get_cmd(instance); - if (!cmd) { - printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); - return -ENOMEM; - } - - /* - * User's IOCTL packet has 2 frames (maximum). Copy those two - * frames into our cmd's frames. cmd->frame's context will get - * overwritten when we copy from user's frames. So set that value - * alone separately - */ - memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); - cmd->frame->hdr.context = cmd->index; - - /* - * The management interface between applications and the fw uses - * MFI frames. E.g, RAID configuration changes, LD property changes - * etc are accomplishes through different kinds of MFI frames. The - * driver needs to care only about substituting user buffers with - * kernel buffers in SGLs. The location of SGL is embedded in the - * struct iocpacket itself. - */ - kern_sge32 = (struct megasas_sge32 *) - ((unsigned long)cmd->frame + ioc->sgl_off); - - /* - * For each user buffer, create a mirror buffer and copy in - */ - for (i = 0; i < ioc->sge_count; i++) { - kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, - ioc->sgl[i].iov_len, - &buf_handle, GFP_KERNEL); - if (!kbuff_arr[i]) { - printk(KERN_DEBUG "megasas: Failed to alloc " - "kernel SGL buffer for IOCTL \n"); - error = -ENOMEM; - goto out; - } - - /* - * We don't change the dma_coherent_mask, so - * pci_alloc_consistent only returns 32bit addresses - */ - kern_sge32[i].phys_addr = (u32) buf_handle; - kern_sge32[i].length = ioc->sgl[i].iov_len; - - /* - * We created a kernel buffer corresponding to the - * user buffer. Now copy in from the user buffer - */ - if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, - (u32) (ioc->sgl[i].iov_len))) { - error = -EFAULT; - goto out; - } - } - - if (ioc->sense_len) { - sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, - &sense_handle, GFP_KERNEL); - if (!sense) { - error = -ENOMEM; - goto out; - } - - sense_ptr = - (u32 *) ((unsigned long)cmd->frame + ioc->sense_off); - *sense_ptr = sense_handle; - } - - /* - * Set the sync_cmd flag so that the ISR knows not to complete this - * cmd to the SCSI mid-layer - */ - cmd->sync_cmd = 1; - megasas_issue_blocked_cmd(instance, cmd); - cmd->sync_cmd = 0; - - /* - * copy out the kernel buffers to user buffers - */ - for (i = 0; i < ioc->sge_count; i++) { - if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], - ioc->sgl[i].iov_len)) { - error = -EFAULT; - goto out; - } - } - - /* - * copy out the sense - */ - if (ioc->sense_len) { - /* - * sense_ptr points to the location that has the user - * sense buffer address - */ - sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw + - ioc->sense_off); - - if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), - sense, ioc->sense_len)) { - printk(KERN_ERR "megasas: Failed to copy out to user " - "sense data\n"); - error = -EFAULT; - goto out; - } - } - - /* - * copy the status codes returned by the fw - */ - if (copy_to_user(&user_ioc->frame.hdr.cmd_status, - &cmd->frame->hdr.cmd_status, sizeof(u8))) { - printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); - error = -EFAULT; - } - - out: - if (sense) { - dma_free_coherent(&instance->pdev->dev, ioc->sense_len, - sense, sense_handle); - } - - for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { - dma_free_coherent(&instance->pdev->dev, - kern_sge32[i].length, - kbuff_arr[i], kern_sge32[i].phys_addr); - } - - megasas_return_cmd(instance, cmd); - return error; -} - -static struct megasas_instance *megasas_lookup_instance(u16 host_no) -{ - int i; - - for (i = 0; i < megasas_mgmt_info.max_index; i++) { - - if ((megasas_mgmt_info.instance[i]) && - (megasas_mgmt_info.instance[i]->host->host_no == host_no)) - return megasas_mgmt_info.instance[i]; - } - - return NULL; -} - -static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) -{ - struct megasas_iocpacket __user *user_ioc = - (struct megasas_iocpacket __user *)arg; - struct megasas_iocpacket *ioc; - struct megasas_instance *instance; - int error; - - ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); - if (!ioc) - return -ENOMEM; - - if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { - error = -EFAULT; - goto out_kfree_ioc; - } - - instance = megasas_lookup_instance(ioc->host_no); - if (!instance) { - error = -ENODEV; - goto out_kfree_ioc; - } - - /* - * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds - */ - if (down_interruptible(&instance->ioctl_sem)) { - error = -ERESTARTSYS; - goto out_kfree_ioc; - } - error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); - up(&instance->ioctl_sem); - - out_kfree_ioc: - kfree(ioc); - return error; -} - -static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) -{ - struct megasas_instance *instance; - struct megasas_aen aen; - int error; - - if (file->private_data != file) { - printk(KERN_DEBUG "megasas: fasync_helper was not " - "called first\n"); - return -EINVAL; - } - - if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) - return -EFAULT; - - instance = megasas_lookup_instance(aen.host_no); - - if (!instance) - return -ENODEV; - - mutex_lock(&instance->aen_mutex); - error = megasas_register_aen(instance, aen.seq_num, - aen.class_locale_word); - mutex_unlock(&instance->aen_mutex); - return error; -} - -/** - * megasas_mgmt_ioctl - char node ioctl entry point - */ -static long -megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - switch (cmd) { - case MEGASAS_IOC_FIRMWARE: - return megasas_mgmt_ioctl_fw(file, arg); - - case MEGASAS_IOC_GET_AEN: - return megasas_mgmt_ioctl_aen(file, arg); - } - - return -ENOTTY; -} - -#ifdef CONFIG_COMPAT -static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) -{ - struct compat_megasas_iocpacket __user *cioc = - (struct compat_megasas_iocpacket __user *)arg; - struct megasas_iocpacket __user *ioc = - compat_alloc_user_space(sizeof(struct megasas_iocpacket)); - int i; - int error = 0; - - if (clear_user(ioc, sizeof(*ioc))) - return -EFAULT; - - if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || - copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || - copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || - copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || - copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || - copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) - return -EFAULT; - - for (i = 0; i < MAX_IOCTL_SGE; i++) { - compat_uptr_t ptr; - - if (get_user(ptr, &cioc->sgl[i].iov_base) || - put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || - copy_in_user(&ioc->sgl[i].iov_len, - &cioc->sgl[i].iov_len, sizeof(compat_size_t))) - return -EFAULT; - } - - error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); - - if (copy_in_user(&cioc->frame.hdr.cmd_status, - &ioc->frame.hdr.cmd_status, sizeof(u8))) { - printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); - return -EFAULT; - } - return error; -} - -static long -megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - switch (cmd) { - case MEGASAS_IOC_FIRMWARE32: - return megasas_mgmt_compat_ioctl_fw(file, arg); - case MEGASAS_IOC_GET_AEN: - return megasas_mgmt_ioctl_aen(file, arg); - } - - return -ENOTTY; -} -#endif - -/* - * File operations structure for management interface - */ -static const struct file_operations megasas_mgmt_fops = { - .owner = THIS_MODULE, - .open = megasas_mgmt_open, - .release = megasas_mgmt_release, - .fasync = megasas_mgmt_fasync, - .unlocked_ioctl = megasas_mgmt_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = megasas_mgmt_compat_ioctl, -#endif -}; - -/* - * PCI hotplug support registration structure - */ -static struct pci_driver megasas_pci_driver = { - - .name = "megaraid_sas", - .id_table = megasas_pci_table, - .probe = megasas_probe_one, - .remove = __devexit_p(megasas_detach_one), - .suspend = megasas_suspend, - .resume = megasas_resume, - .shutdown = megasas_shutdown, -}; - -/* - * Sysfs driver attributes - */ -static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) -{ - return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", - MEGASAS_VERSION); -} - -static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); - -static ssize_t -megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) -{ - return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", - MEGASAS_RELDATE); -} - -static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, - NULL); - -static ssize_t -megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) -{ - return sprintf(buf, "%u\n", megasas_dbg_lvl); -} - -static ssize_t -megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) -{ - int retval = count; - if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ - printk(KERN_ERR "megasas: could not set dbg_lvl\n"); - retval = -EINVAL; - } - return retval; -} - -static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUGO, megasas_sysfs_show_dbg_lvl, - megasas_sysfs_set_dbg_lvl); - -static ssize_t -megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf) -{ - return sprintf(buf, "%u\n", poll_mode_io); -} - -static ssize_t -megasas_sysfs_set_poll_mode_io(struct device_driver *dd, - const char *buf, size_t count) -{ - int retval = count; - int tmp = poll_mode_io; - int i; - struct megasas_instance *instance; - - if (sscanf(buf, "%u", &poll_mode_io) < 1) { - printk(KERN_ERR "megasas: could not set poll_mode_io\n"); - retval = -EINVAL; - } - - /* - * Check if poll_mode_io is already set or is same as previous value - */ - if ((tmp && poll_mode_io) || (tmp == poll_mode_io)) - goto out; - - if (poll_mode_io) { - /* - * Start timers for all adapters - */ - for (i = 0; i < megasas_mgmt_info.max_index; i++) { - instance = megasas_mgmt_info.instance[i]; - if (instance) { - megasas_start_timer(instance, - &instance->io_completion_timer, - megasas_io_completion_timer, - MEGASAS_COMPLETION_TIMER_INTERVAL); - } - } - } else { - /* - * Delete timers for all adapters - */ - for (i = 0; i < megasas_mgmt_info.max_index; i++) { - instance = megasas_mgmt_info.instance[i]; - if (instance) - del_timer_sync(&instance->io_completion_timer); - } - } - -out: - return retval; -} - -static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUGO, - megasas_sysfs_show_poll_mode_io, - megasas_sysfs_set_poll_mode_io); - -/** - * megasas_init - Driver load entry point - */ -static int __init megasas_init(void) -{ - int rval; - - /* - * Announce driver version and other information - */ - printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, - MEGASAS_EXT_VERSION); - - memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); - - /* - * Register character device node - */ - rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); - - if (rval < 0) { - printk(KERN_DEBUG "megasas: failed to open device node\n"); - return rval; - } - - megasas_mgmt_majorno = rval; - - /* - * Register ourselves as PCI hotplug module - */ - rval = pci_register_driver(&megasas_pci_driver); - - if (rval) { - printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); - goto err_pcidrv; - } - - rval = driver_create_file(&megasas_pci_driver.driver, - &driver_attr_version); - if (rval) - goto err_dcf_attr_ver; - rval = driver_create_file(&megasas_pci_driver.driver, - &driver_attr_release_date); - if (rval) - goto err_dcf_rel_date; - rval = driver_create_file(&megasas_pci_driver.driver, - &driver_attr_dbg_lvl); - if (rval) - goto err_dcf_dbg_lvl; - rval = driver_create_file(&megasas_pci_driver.driver, - &driver_attr_poll_mode_io); - if (rval) - goto err_dcf_poll_mode_io; - - return rval; - -err_dcf_poll_mode_io: - driver_remove_file(&megasas_pci_driver.driver, - &driver_attr_dbg_lvl); -err_dcf_dbg_lvl: - driver_remove_file(&megasas_pci_driver.driver, - &driver_attr_release_date); -err_dcf_rel_date: - driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); -err_dcf_attr_ver: - pci_unregister_driver(&megasas_pci_driver); -err_pcidrv: - unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); - return rval; -} - -/** - * megasas_exit - Driver unload entry point - */ -static void __exit megasas_exit(void) -{ - driver_remove_file(&megasas_pci_driver.driver, - &driver_attr_poll_mode_io); - driver_remove_file(&megasas_pci_driver.driver, - &driver_attr_dbg_lvl); - driver_remove_file(&megasas_pci_driver.driver, - &driver_attr_release_date); - driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); - - pci_unregister_driver(&megasas_pci_driver); - unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); -} - -module_init(megasas_init); -module_exit(megasas_exit); diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index b0c41e67170..32166c2c785 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -1,15 +1,30 @@ /* + * Linux MegaRAID driver for SAS based RAID controllers * - * Linux MegaRAID driver for SAS based RAID controllers + * Copyright (c) 2003-2012 LSI Corporation. * - * Copyright (c) 2003-2005 LSI Corporation. + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. * - * FILE : megaraid_sas.h + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas.h + * + * Authors: LSI Corporation + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid */ #ifndef LSI_MEGARAID_SAS_H @@ -18,9 +33,9 @@ /* * MegaRAID SAS Driver meta data */ -#define MEGASAS_VERSION "00.00.03.20-rc1" -#define MEGASAS_RELDATE "March 10, 2008" -#define MEGASAS_EXT_VERSION "Mon. March 10 11:02:31 PDT 2008" +#define MEGASAS_VERSION "06.803.01.00-rc1" +#define MEGASAS_RELDATE "Mar. 10, 2014" +#define MEGASAS_EXT_VERSION "Mon. Mar. 10 17:00:00 PDT 2014" /* * Device IDs @@ -28,6 +43,40 @@ #define PCI_DEVICE_ID_LSI_SAS1078R 0x0060 #define PCI_DEVICE_ID_LSI_SAS1078DE 0x007C #define PCI_DEVICE_ID_LSI_VERDE_ZCR 0x0413 +#define PCI_DEVICE_ID_LSI_SAS1078GEN2 0x0078 +#define PCI_DEVICE_ID_LSI_SAS0079GEN2 0x0079 +#define PCI_DEVICE_ID_LSI_SAS0073SKINNY 0x0073 +#define PCI_DEVICE_ID_LSI_SAS0071SKINNY 0x0071 +#define PCI_DEVICE_ID_LSI_FUSION 0x005b +#define PCI_DEVICE_ID_LSI_PLASMA 0x002f +#define PCI_DEVICE_ID_LSI_INVADER 0x005d +#define PCI_DEVICE_ID_LSI_FURY 0x005f + +/* + * Intel HBA SSDIDs + */ +#define MEGARAID_INTEL_RS3DC080_SSDID 0x9360 +#define MEGARAID_INTEL_RS3DC040_SSDID 0x9362 +#define MEGARAID_INTEL_RS3SC008_SSDID 0x9380 +#define MEGARAID_INTEL_RS3MC044_SSDID 0x9381 +#define MEGARAID_INTEL_RS3WC080_SSDID 0x9341 +#define MEGARAID_INTEL_RS3WC040_SSDID 0x9343 + +/* + * Intel HBA branding + */ +#define MEGARAID_INTEL_RS3DC080_BRANDING \ + "Intel(R) RAID Controller RS3DC080" +#define MEGARAID_INTEL_RS3DC040_BRANDING \ + "Intel(R) RAID Controller RS3DC040" +#define MEGARAID_INTEL_RS3SC008_BRANDING \ + "Intel(R) RAID Controller RS3SC008" +#define MEGARAID_INTEL_RS3MC044_BRANDING \ + "Intel(R) RAID Controller RS3MC044" +#define MEGARAID_INTEL_RS3WC080_BRANDING \ + "Intel(R) RAID Controller RS3WC080" +#define MEGARAID_INTEL_RS3WC040_BRANDING \ + "Intel(R) RAID Controller RS3WC040" /* * ===================================== @@ -56,7 +105,8 @@ #define MFI_STATE_READY 0xB0000000 #define MFI_STATE_OPERATIONAL 0xC0000000 #define MFI_STATE_FAULT 0xF0000000 - +#define MFI_RESET_REQUIRED 0x00000001 +#define MFI_RESET_ADAPTER 0x00000002 #define MEGAMFI_FRAME_SIZE 64 /* @@ -69,6 +119,12 @@ * HOTPLUG : Resume from Hotplug * MFI_STOP_ADP : Send signal to FW to stop processing */ +#define WRITE_SEQUENCE_OFFSET (0x0000000FC) /* I20 */ +#define HOST_DIAGNOSTIC_OFFSET (0x000000F8) /* I20 */ +#define DIAG_WRITE_ENABLE (0x00000080) +#define DIAG_RESET_ADAPTER (0x00000004) + +#define MFI_ADP_RESET 0x00000040 #define MFI_INIT_ABORT 0x00000001 #define MFI_INIT_READY 0x00000002 #define MFI_INIT_MFIMODE 0x00000004 @@ -92,6 +148,7 @@ #define MFI_FRAME_DIR_WRITE 0x0008 #define MFI_FRAME_DIR_READ 0x0010 #define MFI_FRAME_DIR_BOTH 0x0018 +#define MFI_FRAME_IEEE 0x0020 /* * Definition for cmd_status @@ -110,8 +167,11 @@ #define MFI_CMD_ABORT 0x06 #define MFI_CMD_SMP 0x07 #define MFI_CMD_STP 0x08 +#define MFI_CMD_INVALID 0xff #define MR_DCMD_CTRL_GET_INFO 0x01010000 +#define MR_DCMD_LD_GET_LIST 0x03010000 +#define MR_DCMD_LD_LIST_QUERY 0x03010100 #define MR_DCMD_CTRL_CACHE_FLUSH 0x01101000 #define MR_FLUSH_CTRL_CACHE 0x01 @@ -129,6 +189,13 @@ #define MR_DCMD_CLUSTER 0x08000000 #define MR_DCMD_CLUSTER_RESET_ALL 0x08010100 #define MR_DCMD_CLUSTER_RESET_LD 0x08010200 +#define MR_DCMD_PD_LIST_QUERY 0x02010100 + +/* + * Global functions + */ +extern u8 MR_ValidateMapInfo(struct megasas_instance *instance); + /* * MFI command completion codes @@ -191,6 +258,7 @@ enum MFI_STAT { MFI_STAT_RESERVATION_IN_PROGRESS = 0x36, MFI_STAT_I2C_ERRORS_DETECTED = 0x37, MFI_STAT_PCI_ERRORS_DETECTED = 0x38, + MFI_STAT_CONFIG_SEQ_MISMATCH = 0x67, MFI_STAT_INVALID_STATUS = 0xFF }; @@ -249,9 +317,143 @@ enum MR_EVT_ARGS { MR_EVT_ARGS_STR, MR_EVT_ARGS_TIME, MR_EVT_ARGS_ECC, + MR_EVT_ARGS_LD_PROP, + MR_EVT_ARGS_PD_SPARE, + MR_EVT_ARGS_PD_INDEX, + MR_EVT_ARGS_DIAG_PASS, + MR_EVT_ARGS_DIAG_FAIL, + MR_EVT_ARGS_PD_LBA_LBA, + MR_EVT_ARGS_PORT_PHY, + MR_EVT_ARGS_PD_MISSING, + MR_EVT_ARGS_PD_ADDRESS, + MR_EVT_ARGS_BITMAP, + MR_EVT_ARGS_CONNECTOR, + MR_EVT_ARGS_PD_PD, + MR_EVT_ARGS_PD_FRU, + MR_EVT_ARGS_PD_PATHINFO, + MR_EVT_ARGS_PD_POWER_STATE, + MR_EVT_ARGS_GENERIC, +}; +/* + * define constants for device list query options + */ +enum MR_PD_QUERY_TYPE { + MR_PD_QUERY_TYPE_ALL = 0, + MR_PD_QUERY_TYPE_STATE = 1, + MR_PD_QUERY_TYPE_POWER_STATE = 2, + MR_PD_QUERY_TYPE_MEDIA_TYPE = 3, + MR_PD_QUERY_TYPE_SPEED = 4, + MR_PD_QUERY_TYPE_EXPOSED_TO_HOST = 5, }; +enum MR_LD_QUERY_TYPE { + MR_LD_QUERY_TYPE_ALL = 0, + MR_LD_QUERY_TYPE_EXPOSED_TO_HOST = 1, + MR_LD_QUERY_TYPE_USED_TGT_IDS = 2, + MR_LD_QUERY_TYPE_CLUSTER_ACCESS = 3, + MR_LD_QUERY_TYPE_CLUSTER_LOCALE = 4, +}; + + +#define MR_EVT_CFG_CLEARED 0x0004 +#define MR_EVT_LD_STATE_CHANGE 0x0051 +#define MR_EVT_PD_INSERTED 0x005b +#define MR_EVT_PD_REMOVED 0x0070 +#define MR_EVT_LD_CREATED 0x008a +#define MR_EVT_LD_DELETED 0x008b +#define MR_EVT_FOREIGN_CFG_IMPORTED 0x00db +#define MR_EVT_LD_OFFLINE 0x00fc +#define MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED 0x0152 +#define MAX_LOGICAL_DRIVES 64 + +enum MR_PD_STATE { + MR_PD_STATE_UNCONFIGURED_GOOD = 0x00, + MR_PD_STATE_UNCONFIGURED_BAD = 0x01, + MR_PD_STATE_HOT_SPARE = 0x02, + MR_PD_STATE_OFFLINE = 0x10, + MR_PD_STATE_FAILED = 0x11, + MR_PD_STATE_REBUILD = 0x14, + MR_PD_STATE_ONLINE = 0x18, + MR_PD_STATE_COPYBACK = 0x20, + MR_PD_STATE_SYSTEM = 0x40, + }; + + + /* + * defines the physical drive address structure + */ +struct MR_PD_ADDRESS { + u16 deviceId; + u16 enclDeviceId; + + union { + struct { + u8 enclIndex; + u8 slotNumber; + } mrPdAddress; + struct { + u8 enclPosition; + u8 enclConnectorIndex; + } mrEnclAddress; + }; + u8 scsiDevType; + union { + u8 connectedPortBitmap; + u8 connectedPortNumbers; + }; + u64 sasAddr[2]; +} __packed; + +/* + * defines the physical drive list structure + */ +struct MR_PD_LIST { + u32 size; + u32 count; + struct MR_PD_ADDRESS addr[1]; +} __packed; + +struct megasas_pd_list { + u16 tid; + u8 driveType; + u8 driveState; +} __packed; + + /* + * defines the logical drive reference structure + */ +union MR_LD_REF { + struct { + u8 targetId; + u8 reserved; + u16 seqNum; + }; + u32 ref; +} __packed; + +/* + * defines the logical drive list structure + */ +struct MR_LD_LIST { + u32 ldCount; + u32 reserved; + struct { + union MR_LD_REF ref; + u8 state; + u8 reserved[3]; + u64 size; + } ldList[MAX_LOGICAL_DRIVES]; +} __packed; + +struct MR_LD_TARGETID_LIST { + u32 size; + u32 count; + u8 pad[3]; + u8 targetId[MAX_LOGICAL_DRIVES]; +}; + + /* * SAS controller properties */ @@ -278,9 +480,58 @@ struct megasas_ctrl_prop { u16 ecc_bucket_leak_rate; u8 restore_hotspare_on_insertion; u8 expose_encl_devices; - u8 reserved[38]; + u8 maintainPdFailHistory; + u8 disallowHostRequestReordering; + u8 abortCCOnError; + u8 loadBalanceMode; + u8 disableAutoDetectBackplane; -} __attribute__ ((packed)); + u8 snapVDSpace; + + /* + * Add properties that can be controlled by + * a bit in the following structure. + */ + struct { +#if defined(__BIG_ENDIAN_BITFIELD) + u32 reserved:18; + u32 enableJBOD:1; + u32 disableSpinDownHS:1; + u32 allowBootWithPinnedCache:1; + u32 disableOnlineCtrlReset:1; + u32 enableSecretKeyControl:1; + u32 autoEnhancedImport:1; + u32 enableSpinDownUnconfigured:1; + u32 SSDPatrolReadEnabled:1; + u32 SSDSMARTerEnabled:1; + u32 disableNCQ:1; + u32 useFdeOnly:1; + u32 prCorrectUnconfiguredAreas:1; + u32 SMARTerEnabled:1; + u32 copyBackDisabled:1; +#else + u32 copyBackDisabled:1; + u32 SMARTerEnabled:1; + u32 prCorrectUnconfiguredAreas:1; + u32 useFdeOnly:1; + u32 disableNCQ:1; + u32 SSDSMARTerEnabled:1; + u32 SSDPatrolReadEnabled:1; + u32 enableSpinDownUnconfigured:1; + u32 autoEnhancedImport:1; + u32 enableSecretKeyControl:1; + u32 disableOnlineCtrlReset:1; + u32 allowBootWithPinnedCache:1; + u32 disableSpinDownHS:1; + u32 enableJBOD:1; + u32 reserved:18; +#endif + } OnOffProperties; + u8 autoSnapVDSpace; + u8 viewSpace; + u16 spinDownTime; + u8 reserved[24]; +} __packed; /* * SAS controller information @@ -309,7 +560,8 @@ struct megasas_ctrl_info { u8 PCIE:1; u8 iSCSI:1; u8 SAS_3G:1; - u8 reserved_0:4; + u8 SRIOV:1; + u8 reserved_0:3; u8 reserved_1[6]; u8 port_count; u64 port_addr[8]; @@ -521,9 +773,168 @@ struct megasas_ctrl_info { */ char package_version[0x60]; - u8 pad[0x800 - 0x6a0]; -} __attribute__ ((packed)); + /* + * If adapterOperations.supportMoreThan8Phys is set, + * and deviceInterface.portCount is greater than 8, + * SAS Addrs for first 8 ports shall be populated in + * deviceInterface.portAddr, and the rest shall be + * populated in deviceInterfacePortAddr2. + */ + u64 deviceInterfacePortAddr2[8]; /*6a0h */ + u8 reserved3[128]; /*6e0h */ + + struct { /*760h */ + u16 minPdRaidLevel_0:4; + u16 maxPdRaidLevel_0:12; + + u16 minPdRaidLevel_1:4; + u16 maxPdRaidLevel_1:12; + + u16 minPdRaidLevel_5:4; + u16 maxPdRaidLevel_5:12; + + u16 minPdRaidLevel_1E:4; + u16 maxPdRaidLevel_1E:12; + + u16 minPdRaidLevel_6:4; + u16 maxPdRaidLevel_6:12; + + u16 minPdRaidLevel_10:4; + u16 maxPdRaidLevel_10:12; + + u16 minPdRaidLevel_50:4; + u16 maxPdRaidLevel_50:12; + + u16 minPdRaidLevel_60:4; + u16 maxPdRaidLevel_60:12; + + u16 minPdRaidLevel_1E_RLQ0:4; + u16 maxPdRaidLevel_1E_RLQ0:12; + + u16 minPdRaidLevel_1E0_RLQ0:4; + u16 maxPdRaidLevel_1E0_RLQ0:12; + + u16 reserved[6]; + } pdsForRaidLevels; + + u16 maxPds; /*780h */ + u16 maxDedHSPs; /*782h */ + u16 maxGlobalHSPs; /*784h */ + u16 ddfSize; /*786h */ + u8 maxLdsPerArray; /*788h */ + u8 partitionsInDDF; /*789h */ + u8 lockKeyBinding; /*78ah */ + u8 maxPITsPerLd; /*78bh */ + u8 maxViewsPerLd; /*78ch */ + u8 maxTargetId; /*78dh */ + u16 maxBvlVdSize; /*78eh */ + + u16 maxConfigurableSSCSize; /*790h */ + u16 currentSSCsize; /*792h */ + + char expanderFwVersion[12]; /*794h */ + + u16 PFKTrialTimeRemaining; /*7A0h */ + + u16 cacheMemorySize; /*7A2h */ + + struct { /*7A4h */ +#if defined(__BIG_ENDIAN_BITFIELD) + u32 reserved:5; + u32 activePassive:2; + u32 supportConfigAutoBalance:1; + u32 mpio:1; + u32 supportDataLDonSSCArray:1; + u32 supportPointInTimeProgress:1; + u32 supportUnevenSpans:1; + u32 dedicatedHotSparesLimited:1; + u32 headlessMode:1; + u32 supportEmulatedDrives:1; + u32 supportResetNow:1; + u32 realTimeScheduler:1; + u32 supportSSDPatrolRead:1; + u32 supportPerfTuning:1; + u32 disableOnlinePFKChange:1; + u32 supportJBOD:1; + u32 supportBootTimePFKChange:1; + u32 supportSetLinkSpeed:1; + u32 supportEmergencySpares:1; + u32 supportSuspendResumeBGops:1; + u32 blockSSDWriteCacheChange:1; + u32 supportShieldState:1; + u32 supportLdBBMInfo:1; + u32 supportLdPIType3:1; + u32 supportLdPIType2:1; + u32 supportLdPIType1:1; + u32 supportPIcontroller:1; +#else + u32 supportPIcontroller:1; + u32 supportLdPIType1:1; + u32 supportLdPIType2:1; + u32 supportLdPIType3:1; + u32 supportLdBBMInfo:1; + u32 supportShieldState:1; + u32 blockSSDWriteCacheChange:1; + u32 supportSuspendResumeBGops:1; + u32 supportEmergencySpares:1; + u32 supportSetLinkSpeed:1; + u32 supportBootTimePFKChange:1; + u32 supportJBOD:1; + u32 disableOnlinePFKChange:1; + u32 supportPerfTuning:1; + u32 supportSSDPatrolRead:1; + u32 realTimeScheduler:1; + + u32 supportResetNow:1; + u32 supportEmulatedDrives:1; + u32 headlessMode:1; + u32 dedicatedHotSparesLimited:1; + + + u32 supportUnevenSpans:1; + u32 supportPointInTimeProgress:1; + u32 supportDataLDonSSCArray:1; + u32 mpio:1; + u32 supportConfigAutoBalance:1; + u32 activePassive:2; + u32 reserved:5; +#endif + } adapterOperations2; + + u8 driverVersion[32]; /*7A8h */ + u8 maxDAPdCountSpinup60; /*7C8h */ + u8 temperatureROC; /*7C9h */ + u8 temperatureCtrl; /*7CAh */ + u8 reserved4; /*7CBh */ + u16 maxConfigurablePds; /*7CCh */ + + + u8 reserved5[2]; /*0x7CDh */ + + /* + * HA cluster information + */ + struct { + u32 peerIsPresent:1; + u32 peerIsIncompatible:1; + u32 hwIncompatible:1; + u32 fwVersionMismatch:1; + u32 ctrlPropIncompatible:1; + u32 premiumFeatureMismatch:1; + u32 reserved:26; + } cluster; + + char clusterId[16]; /*7D4h */ + struct { + u8 maxVFsSupported; /*0x7E4*/ + u8 numVFsEnabled; /*0x7E5*/ + u8 requestorId; /*0x7E6 0:PF, 1:VF1, 2:VF2*/ + u8 reserved; /*0x7E7*/ + } iov; + + u8 pad[0x800-0x7E8]; /*0x7E8 pad to 2k */ +} __packed; /* * =============================== @@ -531,14 +942,21 @@ struct megasas_ctrl_info { * =============================== */ #define MEGASAS_MAX_PD_CHANNELS 2 -#define MEGASAS_MAX_LD_CHANNELS 2 +#define MEGASAS_MAX_LD_CHANNELS 1 #define MEGASAS_MAX_CHANNELS (MEGASAS_MAX_PD_CHANNELS + \ MEGASAS_MAX_LD_CHANNELS) #define MEGASAS_MAX_DEV_PER_CHANNEL 128 #define MEGASAS_DEFAULT_INIT_ID -1 #define MEGASAS_MAX_LUN 8 #define MEGASAS_MAX_LD 64 - +#define MEGASAS_DEFAULT_CMD_PER_LUN 256 +#define MEGASAS_MAX_PD (MEGASAS_MAX_PD_CHANNELS * \ + MEGASAS_MAX_DEV_PER_CHANNEL) +#define MEGASAS_MAX_LD_IDS (MEGASAS_MAX_LD_CHANNELS * \ + MEGASAS_MAX_DEV_PER_CHANNEL) + +#define MEGASAS_MAX_SECTORS (2*1024) +#define MEGASAS_MAX_SECTORS_IEEE (2*128) #define MEGASAS_DBG_LVL 1 #define MEGASAS_FW_BUSY 1 @@ -559,6 +977,7 @@ struct megasas_ctrl_info { #define MEGASAS_RESET_NOTICE_INTERVAL 5 #define MEGASAS_IOCTL_CMD 0 #define MEGASAS_DEFAULT_CMD_TIMEOUT 90 +#define MEGASAS_THROTTLE_QUEUE_DEPTH 16 /* * FW reports the maximum of number of commands that it can accept (maximum @@ -568,26 +987,50 @@ struct megasas_ctrl_info { * is shown below */ #define MEGASAS_INT_CMDS 32 +#define MEGASAS_SKINNY_INT_CMDS 5 +#define MEGASAS_MAX_MSIX_QUEUES 128 /* * FW can accept both 32 and 64 bit SGLs. We want to allocate 32/64 bit * SGLs based on the size of dma_addr_t */ #define IS_DMA64 (sizeof(dma_addr_t) == 8) +#define MFI_XSCALE_OMR0_CHANGE_INTERRUPT 0x00000001 + +#define MFI_INTR_FLAG_REPLY_MESSAGE 0x00000001 +#define MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE 0x00000002 +#define MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT 0x00000004 + #define MFI_OB_INTR_STATUS_MASK 0x00000002 #define MFI_POLL_TIMEOUT_SECS 60 -#define MEGASAS_COMPLETION_TIMER_INTERVAL (HZ/10) - +#define MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF (5 * HZ) +#define MEGASAS_OCR_SETTLE_TIME_VF (1000 * 30) +#define MEGASAS_ROUTINE_WAIT_TIME_VF 300 #define MFI_REPLY_1078_MESSAGE_INTERRUPT 0x80000000 - +#define MFI_REPLY_GEN2_MESSAGE_INTERRUPT 0x00000001 +#define MFI_GEN2_ENABLE_INTERRUPT_MASK (0x00000001 | 0x00000004) +#define MFI_REPLY_SKINNY_MESSAGE_INTERRUPT 0x40000000 +#define MFI_SKINNY_ENABLE_INTERRUPT_MASK (0x00000001) + +#define MFI_1068_PCSR_OFFSET 0x84 +#define MFI_1068_FW_HANDSHAKE_OFFSET 0x64 +#define MFI_1068_FW_READY 0xDDDD0000 + +#define MR_MAX_REPLY_QUEUES_OFFSET 0X0000001F +#define MR_MAX_REPLY_QUEUES_EXT_OFFSET 0X003FC000 +#define MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT 14 +#define MR_MAX_MSIX_REG_ARRAY 16 /* * register set for both 1068 and 1078 controllers * structure extended for 1078 registers */ struct megasas_register_set { - u32 reserved_0[4]; /*0000h*/ + u32 doorbell; /*0000h*/ + u32 fusion_seq_offset; /*0004h*/ + u32 fusion_host_diag; /*0008h*/ + u32 reserved_01; /*000Ch*/ u32 inbound_msg_0; /*0010h*/ u32 inbound_msg_1; /*0014h*/ @@ -607,23 +1050,28 @@ struct megasas_register_set { u32 inbound_queue_port; /*0040h*/ u32 outbound_queue_port; /*0044h*/ - u32 reserved_2[22]; /*0048h*/ + u32 reserved_2[9]; /*0048h*/ + u32 reply_post_host_index; /*006Ch*/ + u32 reserved_2_2[12]; /*0070h*/ u32 outbound_doorbell_clear; /*00A0h*/ u32 reserved_3[3]; /*00A4h*/ u32 outbound_scratch_pad ; /*00B0h*/ + u32 outbound_scratch_pad_2; /*00B4h*/ - u32 reserved_4[3]; /*00B4h*/ + u32 reserved_4[2]; /*00B8h*/ u32 inbound_low_queue_port ; /*00C0h*/ u32 inbound_high_queue_port ; /*00C4h*/ u32 reserved_5; /*00C8h*/ - u32 index_registers[820]; /*00CCh*/ - + u32 res_6[11]; /*CCh*/ + u32 host_diag; + u32 seq_offset; + u32 index_registers[807]; /*00CCh*/ } __attribute__ ((packed)); struct megasas_sge32 { @@ -640,10 +1088,17 @@ struct megasas_sge64 { } __attribute__ ((packed)); +struct megasas_sge_skinny { + u64 phys_addr; + u32 length; + u32 flag; +} __packed; + union megasas_sgl { struct megasas_sge32 sge32[1]; struct megasas_sge64 sge64[1]; + struct megasas_sge_skinny sge_skinny[1]; } __attribute__ ((packed)); @@ -675,6 +1130,21 @@ union megasas_sgl_frame { } __attribute__ ((packed)); +typedef union _MFI_CAPABILITIES { + struct { +#if defined(__BIG_ENDIAN_BITFIELD) + u32 reserved:30; + u32 support_additional_msix:1; + u32 support_fp_remote_lun:1; +#else + u32 support_fp_remote_lun:1; + u32 support_additional_msix:1; + u32 reserved:30; +#endif + } mfi_capabilities; + u32 reg; +} MFI_CAPABILITIES; + struct megasas_init_frame { u8 cmd; /*00h */ @@ -682,7 +1152,7 @@ struct megasas_init_frame { u8 cmd_status; /*02h */ u8 reserved_1; /*03h */ - u32 reserved_2; /*04h */ + MFI_CAPABILITIES driver_operations; /*04h*/ u32 context; /*08h */ u32 pad_0; /*0Ch */ @@ -897,9 +1367,15 @@ struct megasas_cmd; union megasas_evt_class_locale { struct { +#ifndef __BIG_ENDIAN_BITFIELD u16 locale; u8 reserved; s8 class; +#else + s8 class; + u8 reserved; + u16 locale; +#endif } __attribute__ ((packed)) members; u32 word; @@ -1057,16 +1533,15 @@ struct megasas_evt_detail { } __attribute__ ((packed)); - struct megasas_instance_template { - void (*fire_cmd)(dma_addr_t ,u32 ,struct megasas_register_set __iomem *); - - void (*enable_intr)(struct megasas_register_set __iomem *) ; - void (*disable_intr)(struct megasas_register_set __iomem *); - - int (*clear_intr)(struct megasas_register_set __iomem *); +struct megasas_aen_event { + struct delayed_work hotplug_work; + struct megasas_instance *instance; +}; - u32 (*read_fw_status_reg)(struct megasas_register_set __iomem *); - }; +struct megasas_irq_context { + struct megasas_instance *instance; + u32 MSIxIndex; +}; struct megasas_instance { @@ -1074,22 +1549,37 @@ struct megasas_instance { dma_addr_t producer_h; u32 *consumer; dma_addr_t consumer_h; + struct MR_LD_VF_AFFILIATION *vf_affiliation; + dma_addr_t vf_affiliation_h; + struct MR_LD_VF_AFFILIATION_111 *vf_affiliation_111; + dma_addr_t vf_affiliation_111_h; + struct MR_CTRL_HB_HOST_MEM *hb_host_mem; + dma_addr_t hb_host_mem_h; u32 *reply_queue; dma_addr_t reply_queue_h; - unsigned long base_addr; struct megasas_register_set __iomem *reg_set; - + u32 *reply_post_host_index_addr[MR_MAX_MSIX_REG_ARRAY]; + struct megasas_pd_list pd_list[MEGASAS_MAX_PD]; + struct megasas_pd_list local_pd_list[MEGASAS_MAX_PD]; + u8 ld_ids[MEGASAS_MAX_LD_IDS]; s8 init_id; u16 max_num_sge; u16 max_fw_cmds; + /* For Fusion its num IOCTL cmds, for others MFI based its + max_fw_cmds */ + u16 max_mfi_cmds; u32 max_sectors_per_req; + struct megasas_aen_event *ev; struct megasas_cmd **cmd_list; struct list_head cmd_pool; + /* used to sync fire the cmd to fw */ spinlock_t cmd_pool_lock; + /* used to sync fire the cmd to fw */ + spinlock_t hba_lock; /* used to synch producer, consumer ptrs in dpc */ spinlock_t completion_lock; struct dma_pool *frame_dma_pool; @@ -1108,17 +1598,137 @@ struct megasas_instance { struct pci_dev *pdev; u32 unique_id; + u32 fw_support_ieee; atomic_t fw_outstanding; - u32 hw_crit_error; + atomic_t fw_reset_no_pci_access; struct megasas_instance_template *instancet; struct tasklet_struct isr_tasklet; + struct work_struct work_init; u8 flag; + u8 unload; + u8 flag_ieee; + u8 issuepend_done; + u8 disableOnlineCtrlReset; + u8 UnevenSpanSupport; + u8 adprecovery; unsigned long last_time; + u32 mfiStatus; + u32 last_seq_num; + + struct list_head internal_reset_pending_q; + + /* Ptr to hba specific information */ + void *ctrl_context; + unsigned int msix_vectors; + struct msix_entry msixentry[MEGASAS_MAX_MSIX_QUEUES]; + struct megasas_irq_context irq_context[MEGASAS_MAX_MSIX_QUEUES]; + u64 map_id; + struct megasas_cmd *map_update_cmd; + unsigned long bar; + long reset_flags; + struct mutex reset_mutex; + struct timer_list sriov_heartbeat_timer; + char skip_heartbeat_timer_del; + u8 requestorId; + u64 initiator_sas_address; + u64 ld_sas_address[64]; + char PlasmaFW111; + char mpio; + int throttlequeuedepth; + u8 mask_interrupts; + u8 is_imr; +}; +struct MR_LD_VF_MAP { + u32 size; + union MR_LD_REF ref; + u8 ldVfCount; + u8 reserved[6]; + u8 policy[1]; +}; + +struct MR_LD_VF_AFFILIATION { + u32 size; + u8 ldCount; + u8 vfCount; + u8 thisVf; + u8 reserved[9]; + struct MR_LD_VF_MAP map[1]; +}; + +/* Plasma 1.11 FW backward compatibility structures */ +#define IOV_111_OFFSET 0x7CE +#define MAX_VIRTUAL_FUNCTIONS 8 + +struct IOV_111 { + u8 maxVFsSupported; + u8 numVFsEnabled; + u8 requestorId; + u8 reserved[5]; +}; + +struct MR_LD_VF_MAP_111 { + u8 targetId; + u8 reserved[3]; + u8 policy[MAX_VIRTUAL_FUNCTIONS]; +}; + +struct MR_LD_VF_AFFILIATION_111 { + u8 vdCount; + u8 vfCount; + u8 thisVf; + u8 reserved[5]; + struct MR_LD_VF_MAP_111 map[MAX_LOGICAL_DRIVES]; +}; + +struct MR_CTRL_HB_HOST_MEM { + struct { + u32 fwCounter; /* Firmware heart beat counter */ + struct { + u32 debugmode:1; /* 1=Firmware is in debug mode. + Heart beat will not be updated. */ + u32 reserved:31; + } debug; + u32 reserved_fw[6]; + u32 driverCounter; /* Driver heart beat counter. 0x20 */ + u32 reserved_driver[7]; + } HB; + u8 pad[0x400-0x40]; +}; + +enum { + MEGASAS_HBA_OPERATIONAL = 0, + MEGASAS_ADPRESET_SM_INFAULT = 1, + MEGASAS_ADPRESET_SM_FW_RESET_SUCCESS = 2, + MEGASAS_ADPRESET_SM_OPERATIONAL = 3, + MEGASAS_HW_CRITICAL_ERROR = 4, + MEGASAS_ADPRESET_SM_POLLING = 5, + MEGASAS_ADPRESET_INPROG_SIGN = 0xDEADDEAD, +}; + +struct megasas_instance_template { + void (*fire_cmd)(struct megasas_instance *, dma_addr_t, \ + u32, struct megasas_register_set __iomem *); + + void (*enable_intr)(struct megasas_instance *); + void (*disable_intr)(struct megasas_instance *); - struct timer_list io_completion_timer; + int (*clear_intr)(struct megasas_register_set __iomem *); + + u32 (*read_fw_status_reg)(struct megasas_register_set __iomem *); + int (*adp_reset)(struct megasas_instance *, \ + struct megasas_register_set __iomem *); + int (*check_reset)(struct megasas_instance *, \ + struct megasas_register_set __iomem *); + irqreturn_t (*service_isr)(int irq, void *devp); + void (*tasklet)(unsigned long); + u32 (*init_adapter)(struct megasas_instance *); + u32 (*build_and_issue_cmd) (struct megasas_instance *, + struct scsi_cmnd *); + void (*issue_dcmd) (struct megasas_instance *instance, + struct megasas_cmd *cmd); }; #define MEGASAS_IS_LOGICAL(scp) \ @@ -1138,12 +1748,20 @@ struct megasas_cmd { u32 index; u8 sync_cmd; u8 cmd_status; - u16 abort_aen; + u8 abort_aen; + u8 retry_for_fw_reset; + struct list_head list; struct scsi_cmnd *scmd; struct megasas_instance *instance; - u32 frame_count; + union { + struct { + u16 smid; + u16 resvd; + } context; + u32 frame_count; + }; }; #define MAX_MGMT_ADAPTERS 1024 @@ -1201,4 +1819,16 @@ struct megasas_mgmt_info { int max_index; }; +u8 +MR_BuildRaidContext(struct megasas_instance *instance, + struct IO_REQUEST_INFO *io_info, + struct RAID_CONTEXT *pRAID_Context, + struct MR_FW_RAID_MAP_ALL *map, u8 **raidLUN); +u8 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map); +struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map); +u16 MR_ArPdGet(u32 ar, u32 arm, struct MR_FW_RAID_MAP_ALL *map); +u16 MR_LdSpanArrayGet(u32 ld, u32 span, struct MR_FW_RAID_MAP_ALL *map); +u16 MR_PdDevHandleGet(u32 pd, struct MR_FW_RAID_MAP_ALL *map); +u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map); + #endif /*LSI_MEGARAID_SAS_H */ diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c new file mode 100644 index 00000000000..112799b131a --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -0,0 +1,6325 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2003-2012 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_base.c + * Version : 06.803.01.00-rc1 + * + * Authors: LSI Corporation + * Sreenivas Bagalkote + * Sumant Patro + * Bo Yang + * Adam Radford <linuxraid@lsi.com> + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/uio.h> +#include <linux/slab.h> +#include <asm/uaccess.h> +#include <linux/fs.h> +#include <linux/compat.h> +#include <linux/blkdev.h> +#include <linux/mutex.h> +#include <linux/poll.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> +#include "megaraid_sas_fusion.h" +#include "megaraid_sas.h" + +/* + * Number of sectors per IO command + * Will be set in megasas_init_mfi if user does not provide + */ +static unsigned int max_sectors; +module_param_named(max_sectors, max_sectors, int, 0); +MODULE_PARM_DESC(max_sectors, + "Maximum number of sectors per IO command"); + +static int msix_disable; +module_param(msix_disable, int, S_IRUGO); +MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); + +static unsigned int msix_vectors; +module_param(msix_vectors, int, S_IRUGO); +MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); + +static int allow_vf_ioctls; +module_param(allow_vf_ioctls, int, S_IRUGO); +MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); + +static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; +module_param(throttlequeuedepth, int, S_IRUGO); +MODULE_PARM_DESC(throttlequeuedepth, + "Adapter queue depth when throttled due to I/O timeout. Default: 16"); + +int resetwaittime = MEGASAS_RESET_WAIT_TIME; +module_param(resetwaittime, int, S_IRUGO); +MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout " + "before resetting adapter. Default: 180"); + +MODULE_LICENSE("GPL"); +MODULE_VERSION(MEGASAS_VERSION); +MODULE_AUTHOR("megaraidlinux@lsi.com"); +MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); + +int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); +static int megasas_get_pd_list(struct megasas_instance *instance); +static int megasas_ld_list_query(struct megasas_instance *instance, + u8 query_type); +static int megasas_issue_init_mfi(struct megasas_instance *instance); +static int megasas_register_aen(struct megasas_instance *instance, + u32 seq_num, u32 class_locale_word); +/* + * PCI ID table for all supported controllers + */ +static struct pci_device_id megasas_pci_table[] = { + + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, + /* xscale IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, + /* ppc IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, + /* ppc IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, + /* gen2*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, + /* gen2*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, + /* skinny*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, + /* skinny*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, + /* xscale IOP, vega */ + {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, + /* xscale IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, + /* Fusion */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, + /* Plasma */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, + /* Invader */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, + /* Fury */ + {} +}; + +MODULE_DEVICE_TABLE(pci, megasas_pci_table); + +static int megasas_mgmt_majorno; +struct megasas_mgmt_info megasas_mgmt_info; +static struct fasync_struct *megasas_async_queue; +static DEFINE_MUTEX(megasas_async_queue_mutex); + +static int megasas_poll_wait_aen; +static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); +static u32 support_poll_for_event; +u32 megasas_dbg_lvl; +static u32 support_device_change; + +/* define lock for aen poll */ +spinlock_t poll_aen_lock; + +void +megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, + u8 alt_status); +static u32 +megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); +static int +megasas_adp_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *reg_set); +static irqreturn_t megasas_isr(int irq, void *devp); +static u32 +megasas_init_adapter_mfi(struct megasas_instance *instance); +u32 +megasas_build_and_issue_cmd(struct megasas_instance *instance, + struct scsi_cmnd *scmd); +static void megasas_complete_cmd_dpc(unsigned long instance_addr); +void +megasas_release_fusion(struct megasas_instance *instance); +int +megasas_ioc_init_fusion(struct megasas_instance *instance); +void +megasas_free_cmds_fusion(struct megasas_instance *instance); +u8 +megasas_get_map_info(struct megasas_instance *instance); +int +megasas_sync_map_info(struct megasas_instance *instance); +int +wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, + int seconds); +void megasas_reset_reply_desc(struct megasas_instance *instance); +int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout); +void megasas_fusion_ocr_wq(struct work_struct *work); +static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, + int initial); +int megasas_check_mpio_paths(struct megasas_instance *instance, + struct scsi_cmnd *scmd); + +void +megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr, 0, instance->reg_set); +} + +/** + * megasas_get_cmd - Get a command from the free pool + * @instance: Adapter soft state + * + * Returns a free command from the pool + */ +struct megasas_cmd *megasas_get_cmd(struct megasas_instance + *instance) +{ + unsigned long flags; + struct megasas_cmd *cmd = NULL; + + spin_lock_irqsave(&instance->cmd_pool_lock, flags); + + if (!list_empty(&instance->cmd_pool)) { + cmd = list_entry((&instance->cmd_pool)->next, + struct megasas_cmd, list); + list_del_init(&cmd->list); + } else { + printk(KERN_ERR "megasas: Command pool empty!\n"); + } + + spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); + return cmd; +} + +/** + * megasas_return_cmd - Return a cmd to free command pool + * @instance: Adapter soft state + * @cmd: Command packet to be returned to free command pool + */ +inline void +megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->cmd_pool_lock, flags); + + cmd->scmd = NULL; + cmd->frame_count = 0; + if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && + (reset_devices)) + cmd->frame->hdr.cmd = MFI_CMD_INVALID; + list_add_tail(&cmd->list, &instance->cmd_pool); + + spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); +} + + +/** +* The following functions are defined for xscale +* (deviceid : 1064R, PERC5) controllers +*/ + +/** + * megasas_enable_intr_xscale - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_xscale(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + writel(0, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_xscale -Disables interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_xscale(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0x1f; + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_xscale - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) +{ + return readl(&(regs)->outbound_msg_0); +} +/** + * megasas_clear_interrupt_xscale - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) +{ + u32 status; + u32 mfiStatus = 0; + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_OB_INTR_STATUS_MASK) + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + + /* + * Clear the interrupt by writing back the same value + */ + if (mfiStatus) + writel(status, ®s->outbound_intr_status); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_xscale - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_xscale(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr >> 3)|(frame_count), + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_adp_reset_xscale - For controller reset + * @regs: MFI register set + */ +static int +megasas_adp_reset_xscale(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + u32 i; + u32 pcidata; + writel(MFI_ADP_RESET, ®s->inbound_doorbell); + + for (i = 0; i < 3; i++) + msleep(1000); /* sleep for 3 secs */ + pcidata = 0; + pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); + printk(KERN_NOTICE "pcidata = %x\n", pcidata); + if (pcidata & 0x2) { + printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); + pcidata &= ~0x2; + pci_write_config_dword(instance->pdev, + MFI_1068_PCSR_OFFSET, pcidata); + + for (i = 0; i < 2; i++) + msleep(1000); /* need to wait 2 secs again */ + + pcidata = 0; + pci_read_config_dword(instance->pdev, + MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); + printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); + if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { + printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); + pcidata = 0; + pci_write_config_dword(instance->pdev, + MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); + } + } + return 0; +} + +/** + * megasas_check_reset_xscale - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_xscale(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + + if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && + (le32_to_cpu(*instance->consumer) == + MEGASAS_ADPRESET_INPROG_SIGN)) + return 1; + return 0; +} + +static struct megasas_instance_template megasas_instance_template_xscale = { + + .fire_cmd = megasas_fire_cmd_xscale, + .enable_intr = megasas_enable_intr_xscale, + .disable_intr = megasas_disable_intr_xscale, + .clear_intr = megasas_clear_intr_xscale, + .read_fw_status_reg = megasas_read_fw_status_reg_xscale, + .adp_reset = megasas_adp_reset_xscale, + .check_reset = megasas_check_reset_xscale, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/** +* This is the end of set of functions & definitions specific +* to xscale (deviceid : 1064R, PERC5) controllers +*/ + +/** +* The following functions are defined for ppc (deviceid : 0x60) +* controllers +*/ + +/** + * megasas_enable_intr_ppc - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_ppc(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); + + writel(~0x80000000, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_ppc - Disable interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_ppc(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0xFFFFFFFF; + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_ppc - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_clear_interrupt_ppc - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) +{ + u32 status, mfiStatus = 0; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + + if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + + /* + * Clear the interrupt by writing back the same value + */ + writel(status, ®s->outbound_doorbell_clear); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_doorbell_clear); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_ppc - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_ppc(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_check_reset_ppc - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_ppc(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) + return 1; + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_ppc = { + + .fire_cmd = megasas_fire_cmd_ppc, + .enable_intr = megasas_enable_intr_ppc, + .disable_intr = megasas_disable_intr_ppc, + .clear_intr = megasas_clear_intr_ppc, + .read_fw_status_reg = megasas_read_fw_status_reg_ppc, + .adp_reset = megasas_adp_reset_xscale, + .check_reset = megasas_check_reset_ppc, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/** + * megasas_enable_intr_skinny - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_skinny(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); + + writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_skinny - Disables interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_skinny(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0xFFFFFFFF; + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_skinny - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_clear_interrupt_skinny - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) +{ + u32 status; + u32 mfiStatus = 0; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { + return 0; + } + + /* + * Check if it is our interrupt + */ + if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) == + MFI_STATE_FAULT) { + mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + } else + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + + /* + * Clear the interrupt by writing back the same value + */ + writel(status, ®s->outbound_intr_status); + + /* + * dummy read to flush PCI + */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_skinny - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_skinny(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel(upper_32_bits(frame_phys_addr), + &(regs)->inbound_high_queue_port); + writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, + &(regs)->inbound_low_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_check_reset_skinny - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_skinny(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) + return 1; + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_skinny = { + + .fire_cmd = megasas_fire_cmd_skinny, + .enable_intr = megasas_enable_intr_skinny, + .disable_intr = megasas_disable_intr_skinny, + .clear_intr = megasas_clear_intr_skinny, + .read_fw_status_reg = megasas_read_fw_status_reg_skinny, + .adp_reset = megasas_adp_reset_gen2, + .check_reset = megasas_check_reset_skinny, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + + +/** +* The following functions are defined for gen2 (deviceid : 0x78 0x79) +* controllers +*/ + +/** + * megasas_enable_intr_gen2 - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_gen2(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); + + /* write ~0x00000005 (4 & 1) to the intr mask*/ + writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_gen2 - Disables interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_gen2(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0xFFFFFFFF; + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_gen2 - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_clear_interrupt_gen2 - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) +{ + u32 status; + u32 mfiStatus = 0; + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + } + if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + } + + /* + * Clear the interrupt by writing back the same value + */ + if (mfiStatus) + writel(status, ®s->outbound_doorbell_clear); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} +/** + * megasas_fire_cmd_gen2 - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_gen2(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_adp_reset_gen2 - For controller reset + * @regs: MFI register set + */ +static int +megasas_adp_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *reg_set) +{ + u32 retry = 0 ; + u32 HostDiag; + u32 *seq_offset = ®_set->seq_offset; + u32 *hostdiag_offset = ®_set->host_diag; + + if (instance->instancet == &megasas_instance_template_skinny) { + seq_offset = ®_set->fusion_seq_offset; + hostdiag_offset = ®_set->fusion_host_diag; + } + + writel(0, seq_offset); + writel(4, seq_offset); + writel(0xb, seq_offset); + writel(2, seq_offset); + writel(7, seq_offset); + writel(0xd, seq_offset); + + msleep(1000); + + HostDiag = (u32)readl(hostdiag_offset); + + while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { + msleep(100); + HostDiag = (u32)readl(hostdiag_offset); + printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", + retry, HostDiag); + + if (retry++ >= 100) + return 1; + + } + + printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); + + writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); + + ssleep(10); + + HostDiag = (u32)readl(hostdiag_offset); + while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { + msleep(100); + HostDiag = (u32)readl(hostdiag_offset); + printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", + retry, HostDiag); + + if (retry++ >= 1000) + return 1; + + } + return 0; +} + +/** + * megasas_check_reset_gen2 - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + return 1; + } + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_gen2 = { + + .fire_cmd = megasas_fire_cmd_gen2, + .enable_intr = megasas_enable_intr_gen2, + .disable_intr = megasas_disable_intr_gen2, + .clear_intr = megasas_clear_intr_gen2, + .read_fw_status_reg = megasas_read_fw_status_reg_gen2, + .adp_reset = megasas_adp_reset_gen2, + .check_reset = megasas_check_reset_gen2, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/** +* This is the end of set of functions & definitions +* specific to gen2 (deviceid : 0x78, 0x79) controllers +*/ + +/* + * Template added for TB (Fusion) + */ +extern struct megasas_instance_template megasas_instance_template_fusion; + +/** + * megasas_issue_polled - Issues a polling command + * @instance: Adapter soft state + * @cmd: Command packet to be issued + * + * For polling, MFI requires the cmd_status to be set to 0xFF before posting. + */ +int +megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + int seconds; + + struct megasas_header *frame_hdr = &cmd->frame->hdr; + + frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE; + frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); + + /* + * Issue the frame using inbound queue port + */ + instance->instancet->issue_dcmd(instance, cmd); + + /* + * Wait for cmd_status to change + */ + if (instance->requestorId) + seconds = MEGASAS_ROUTINE_WAIT_TIME_VF; + else + seconds = MFI_POLL_TIMEOUT_SECS; + return wait_and_poll(instance, cmd, seconds); +} + +/** + * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds + * @instance: Adapter soft state + * @cmd: Command to be issued + * @timeout: Timeout in seconds + * + * This function waits on an event for the command to be returned from ISR. + * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs + * Used to issue ioctl commands. + */ +static int +megasas_issue_blocked_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd, int timeout) +{ + int ret = 0; + cmd->cmd_status = ENODATA; + + instance->instancet->issue_dcmd(instance, cmd); + if (timeout) { + ret = wait_event_timeout(instance->int_cmd_wait_q, + cmd->cmd_status != ENODATA, timeout * HZ); + if (!ret) + return 1; + } else + wait_event(instance->int_cmd_wait_q, + cmd->cmd_status != ENODATA); + + return 0; +} + +/** + * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd + * @instance: Adapter soft state + * @cmd_to_abort: Previously issued cmd to be aborted + * @timeout: Timeout in seconds + * + * MFI firmware can abort previously issued AEN comamnd (automatic event + * notification). The megasas_issue_blocked_abort_cmd() issues such abort + * cmd and waits for return status. + * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs + */ +static int +megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd_to_abort, int timeout) +{ + struct megasas_cmd *cmd; + struct megasas_abort_frame *abort_fr; + int ret = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return -1; + + abort_fr = &cmd->frame->abort; + + /* + * Prepare and issue the abort frame + */ + abort_fr->cmd = MFI_CMD_ABORT; + abort_fr->cmd_status = 0xFF; + abort_fr->flags = cpu_to_le16(0); + abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); + abort_fr->abort_mfi_phys_addr_lo = + cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); + abort_fr->abort_mfi_phys_addr_hi = + cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); + + cmd->sync_cmd = 1; + cmd->cmd_status = 0xFF; + + instance->instancet->issue_dcmd(instance, cmd); + + if (timeout) { + ret = wait_event_timeout(instance->abort_cmd_wait_q, + cmd->cmd_status != ENODATA, timeout * HZ); + if (!ret) { + dev_err(&instance->pdev->dev, "Command timedout" + "from %s\n", __func__); + return 1; + } + } else + wait_event(instance->abort_cmd_wait_q, + cmd->cmd_status != ENODATA); + + cmd->sync_cmd = 0; + + megasas_return_cmd(instance, cmd); + return 0; +} + +/** + * megasas_make_sgl32 - Prepares 32-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, + union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); + mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); + } + } + return sge_count; +} + +/** + * megasas_make_sgl64 - Prepares 64-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, + union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); + mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); + } + } + return sge_count; +} + +/** + * megasas_make_sgl_skinny - Prepares IEEE SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl_skinny(struct megasas_instance *instance, + struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge_skinny[i].length = + cpu_to_le32(sg_dma_len(os_sgl)); + mfi_sgl->sge_skinny[i].phys_addr = + cpu_to_le64(sg_dma_address(os_sgl)); + mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); + } + } + return sge_count; +} + + /** + * megasas_get_frame_count - Computes the number of frames + * @frame_type : type of frame- io or pthru frame + * @sge_count : number of sg elements + * + * Returns the number of frames required for numnber of sge's (sge_count) + */ + +static u32 megasas_get_frame_count(struct megasas_instance *instance, + u8 sge_count, u8 frame_type) +{ + int num_cnt; + int sge_bytes; + u32 sge_sz; + u32 frame_count=0; + + sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : + sizeof(struct megasas_sge32); + + if (instance->flag_ieee) { + sge_sz = sizeof(struct megasas_sge_skinny); + } + + /* + * Main frame can contain 2 SGEs for 64-bit SGLs and + * 3 SGEs for 32-bit SGLs for ldio & + * 1 SGEs for 64-bit SGLs and + * 2 SGEs for 32-bit SGLs for pthru frame + */ + if (unlikely(frame_type == PTHRU_FRAME)) { + if (instance->flag_ieee == 1) { + num_cnt = sge_count - 1; + } else if (IS_DMA64) + num_cnt = sge_count - 1; + else + num_cnt = sge_count - 2; + } else { + if (instance->flag_ieee == 1) { + num_cnt = sge_count - 1; + } else if (IS_DMA64) + num_cnt = sge_count - 2; + else + num_cnt = sge_count - 3; + } + + if(num_cnt>0){ + sge_bytes = sge_sz * num_cnt; + + frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + + ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; + } + /* Main frame */ + frame_count +=1; + + if (frame_count > 7) + frame_count = 8; + return frame_count; +} + +/** + * megasas_build_dcdb - Prepares a direct cdb (DCDB) command + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared in + * + * This function prepares CDB commands. These are typcially pass-through + * commands to the devices. + */ +static int +megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, + struct megasas_cmd *cmd) +{ + u32 is_logical; + u32 device_id; + u16 flags = 0; + struct megasas_pthru_frame *pthru; + + is_logical = MEGASAS_IS_LOGICAL(scp); + device_id = MEGASAS_DEV_INDEX(instance, scp); + pthru = (struct megasas_pthru_frame *)cmd->frame; + + if (scp->sc_data_direction == PCI_DMA_TODEVICE) + flags = MFI_FRAME_DIR_WRITE; + else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + flags = MFI_FRAME_DIR_READ; + else if (scp->sc_data_direction == PCI_DMA_NONE) + flags = MFI_FRAME_DIR_NONE; + + if (instance->flag_ieee == 1) { + flags |= MFI_FRAME_IEEE; + } + + /* + * Prepare the DCDB frame + */ + pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; + pthru->cmd_status = 0x0; + pthru->scsi_status = 0x0; + pthru->target_id = device_id; + pthru->lun = scp->device->lun; + pthru->cdb_len = scp->cmd_len; + pthru->timeout = 0; + pthru->pad_0 = 0; + pthru->flags = cpu_to_le16(flags); + pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); + + memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); + + /* + * If the command is for the tape device, set the + * pthru timeout to the os layer timeout value. + */ + if (scp->device->type == TYPE_TAPE) { + if ((scp->request->timeout / HZ) > 0xFFFF) + pthru->timeout = 0xFFFF; + else + pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); + } + + /* + * Construct SGL + */ + if (instance->flag_ieee == 1) { + pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); + pthru->sge_count = megasas_make_sgl_skinny(instance, scp, + &pthru->sgl); + } else if (IS_DMA64) { + pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); + pthru->sge_count = megasas_make_sgl64(instance, scp, + &pthru->sgl); + } else + pthru->sge_count = megasas_make_sgl32(instance, scp, + &pthru->sgl); + + if (pthru->sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", + pthru->sge_count); + return 0; + } + + /* + * Sense info specific + */ + pthru->sense_len = SCSI_SENSE_BUFFERSIZE; + pthru->sense_buf_phys_addr_hi = + cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); + pthru->sense_buf_phys_addr_lo = + cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); + + /* + * Compute the total number of frames this command consumes. FW uses + * this number to pull sufficient number of frames from host memory. + */ + cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, + PTHRU_FRAME); + + return cmd->frame_count; +} + +/** + * megasas_build_ldio - Prepares IOs to logical devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Frames (and accompanying SGLs) for regular SCSI IOs use this function. + */ +static int +megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, + struct megasas_cmd *cmd) +{ + u32 device_id; + u8 sc = scp->cmnd[0]; + u16 flags = 0; + struct megasas_io_frame *ldio; + + device_id = MEGASAS_DEV_INDEX(instance, scp); + ldio = (struct megasas_io_frame *)cmd->frame; + + if (scp->sc_data_direction == PCI_DMA_TODEVICE) + flags = MFI_FRAME_DIR_WRITE; + else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + flags = MFI_FRAME_DIR_READ; + + if (instance->flag_ieee == 1) { + flags |= MFI_FRAME_IEEE; + } + + /* + * Prepare the Logical IO frame: 2nd bit is zero for all read cmds + */ + ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; + ldio->cmd_status = 0x0; + ldio->scsi_status = 0x0; + ldio->target_id = device_id; + ldio->timeout = 0; + ldio->reserved_0 = 0; + ldio->pad_0 = 0; + ldio->flags = cpu_to_le16(flags); + ldio->start_lba_hi = 0; + ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; + + /* + * 6-byte READ(0x08) or WRITE(0x0A) cdb + */ + if (scp->cmd_len == 6) { + ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | + ((u32) scp->cmnd[2] << 8) | + (u32) scp->cmnd[3]); + + ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); + } + + /* + * 10-byte READ(0x28) or WRITE(0x2A) cdb + */ + else if (scp->cmd_len == 10) { + ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | + ((u32) scp->cmnd[7] << 8)); + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | + (u32) scp->cmnd[5]); + } + + /* + * 12-byte READ(0xA8) or WRITE(0xAA) cdb + */ + else if (scp->cmd_len == 12) { + ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | + (u32) scp->cmnd[9]); + + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | + (u32) scp->cmnd[5]); + } + + /* + * 16-byte READ(0x88) or WRITE(0x8A) cdb + */ + else if (scp->cmd_len == 16) { + ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | + ((u32) scp->cmnd[11] << 16) | + ((u32) scp->cmnd[12] << 8) | + (u32) scp->cmnd[13]); + + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | + (u32) scp->cmnd[9]); + + ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | + (u32) scp->cmnd[5]); + + } + + /* + * Construct SGL + */ + if (instance->flag_ieee) { + ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); + ldio->sge_count = megasas_make_sgl_skinny(instance, scp, + &ldio->sgl); + } else if (IS_DMA64) { + ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); + ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); + } else + ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); + + if (ldio->sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", + ldio->sge_count); + return 0; + } + + /* + * Sense info specific + */ + ldio->sense_len = SCSI_SENSE_BUFFERSIZE; + ldio->sense_buf_phys_addr_hi = 0; + ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); + + /* + * Compute the total number of frames this command consumes. FW uses + * this number to pull sufficient number of frames from host memory. + */ + cmd->frame_count = megasas_get_frame_count(instance, + ldio->sge_count, IO_FRAME); + + return cmd->frame_count; +} + +/** + * megasas_is_ldio - Checks if the cmd is for logical drive + * @scmd: SCSI command + * + * Called by megasas_queue_command to find out if the command to be queued + * is a logical drive command + */ +inline int megasas_is_ldio(struct scsi_cmnd *cmd) +{ + if (!MEGASAS_IS_LOGICAL(cmd)) + return 0; + switch (cmd->cmnd[0]) { + case READ_10: + case WRITE_10: + case READ_12: + case WRITE_12: + case READ_6: + case WRITE_6: + case READ_16: + case WRITE_16: + return 1; + default: + return 0; + } +} + + /** + * megasas_dump_pending_frames - Dumps the frame address of all pending cmds + * in FW + * @instance: Adapter soft state + */ +static inline void +megasas_dump_pending_frames(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + int i,n; + union megasas_sgl *mfi_sgl; + struct megasas_io_frame *ldio; + struct megasas_pthru_frame *pthru; + u32 sgcount; + u32 max_cmd = instance->max_fw_cmds; + + printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); + printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); + if (IS_DMA64) + printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); + else + printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); + + printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + if(!cmd->scmd) + continue; + printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); + if (megasas_is_ldio(cmd->scmd)){ + ldio = (struct megasas_io_frame *)cmd->frame; + mfi_sgl = &ldio->sgl; + sgcount = ldio->sge_count; + printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," + " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", + instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, + le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), + le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); + } + else { + pthru = (struct megasas_pthru_frame *) cmd->frame; + mfi_sgl = &pthru->sgl; + sgcount = pthru->sge_count; + printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " + "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", + instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, + pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), + le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); + } + if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ + for (n = 0; n < sgcount; n++){ + if (IS_DMA64) + printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ", + le32_to_cpu(mfi_sgl->sge64[n].length), + le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); + else + printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ", + le32_to_cpu(mfi_sgl->sge32[n].length), + le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); + } + } + printk(KERN_ERR "\n"); + } /*for max_cmd*/ + printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + if(cmd->sync_cmd == 1){ + printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); + } + } + printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); +} + +u32 +megasas_build_and_issue_cmd(struct megasas_instance *instance, + struct scsi_cmnd *scmd) +{ + struct megasas_cmd *cmd; + u32 frame_count; + + cmd = megasas_get_cmd(instance); + if (!cmd) + return SCSI_MLQUEUE_HOST_BUSY; + + /* + * Logical drive command + */ + if (megasas_is_ldio(scmd)) + frame_count = megasas_build_ldio(instance, scmd, cmd); + else + frame_count = megasas_build_dcdb(instance, scmd, cmd); + + if (!frame_count) + goto out_return_cmd; + + cmd->scmd = scmd; + scmd->SCp.ptr = (char *)cmd; + + /* + * Issue the command to the FW + */ + atomic_inc(&instance->fw_outstanding); + + instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, + cmd->frame_count-1, instance->reg_set); + + return 0; +out_return_cmd: + megasas_return_cmd(instance, cmd); + return 1; +} + + +/** + * megasas_queue_command - Queue entry point + * @scmd: SCSI command to be queued + * @done: Callback entry point + */ +static int +megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) +{ + struct megasas_instance *instance; + unsigned long flags; + + instance = (struct megasas_instance *) + scmd->device->host->hostdata; + + if (instance->issuepend_done == 0) + return SCSI_MLQUEUE_HOST_BUSY; + + spin_lock_irqsave(&instance->hba_lock, flags); + + /* Check for an mpio path and adjust behavior */ + if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { + if (megasas_check_mpio_paths(instance, scmd) == + (DID_RESET << 16)) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + return SCSI_MLQUEUE_HOST_BUSY; + } else { + spin_unlock_irqrestore(&instance->hba_lock, flags); + scmd->result = DID_NO_CONNECT << 16; + done(scmd); + return 0; + } + } + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + scmd->result = DID_NO_CONNECT << 16; + done(scmd); + return 0; + } + + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + return SCSI_MLQUEUE_HOST_BUSY; + } + + spin_unlock_irqrestore(&instance->hba_lock, flags); + + scmd->scsi_done = done; + scmd->result = 0; + + if (MEGASAS_IS_LOGICAL(scmd) && + (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { + scmd->result = DID_BAD_TARGET << 16; + goto out_done; + } + + switch (scmd->cmnd[0]) { + case SYNCHRONIZE_CACHE: + /* + * FW takes care of flush cache on its own + * No need to send it down + */ + scmd->result = DID_OK << 16; + goto out_done; + default: + break; + } + + if (instance->instancet->build_and_issue_cmd(instance, scmd)) { + printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); + return SCSI_MLQUEUE_HOST_BUSY; + } + + return 0; + + out_done: + done(scmd); + return 0; +} + +static DEF_SCSI_QCMD(megasas_queue_command) + +static struct megasas_instance *megasas_lookup_instance(u16 host_no) +{ + int i; + + for (i = 0; i < megasas_mgmt_info.max_index; i++) { + + if ((megasas_mgmt_info.instance[i]) && + (megasas_mgmt_info.instance[i]->host->host_no == host_no)) + return megasas_mgmt_info.instance[i]; + } + + return NULL; +} + +static int megasas_slave_configure(struct scsi_device *sdev) +{ + u16 pd_index = 0; + struct megasas_instance *instance ; + + instance = megasas_lookup_instance(sdev->host->host_no); + + /* + * Don't export physical disk devices to the disk driver. + * + * FIXME: Currently we don't export them to the midlayer at all. + * That will be fixed once LSI engineers have audited the + * firmware for possible issues. + */ + if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && + sdev->type == TYPE_DISK) { + pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + if (instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) { + blk_queue_rq_timeout(sdev->request_queue, + MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); + return 0; + } + return -ENXIO; + } + + /* + * The RAID firmware may require extended timeouts. + */ + blk_queue_rq_timeout(sdev->request_queue, + MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); + return 0; +} + +static int megasas_slave_alloc(struct scsi_device *sdev) +{ + u16 pd_index = 0; + struct megasas_instance *instance ; + instance = megasas_lookup_instance(sdev->host->host_no); + if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && + (sdev->type == TYPE_DISK)) { + /* + * Open the OS scan to the SYSTEM PD + */ + pd_index = + (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + if ((instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) && + (instance->pd_list[pd_index].driveType == + TYPE_DISK)) { + return 0; + } + return -ENXIO; + } + return 0; +} + +void megaraid_sas_kill_hba(struct megasas_instance *instance) +{ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + writel(MFI_STOP_ADP, &instance->reg_set->doorbell); + /* Flush */ + readl(&instance->reg_set->doorbell); + if (instance->mpio && instance->requestorId) + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + } else { + writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); + } +} + + /** + * megasas_check_and_restore_queue_depth - Check if queue depth needs to be + * restored to max value + * @instance: Adapter soft state + * + */ +void +megasas_check_and_restore_queue_depth(struct megasas_instance *instance) +{ + unsigned long flags; + if (instance->flag & MEGASAS_FW_BUSY + && time_after(jiffies, instance->last_time + 5 * HZ) + && atomic_read(&instance->fw_outstanding) < + instance->throttlequeuedepth + 1) { + + spin_lock_irqsave(instance->host->host_lock, flags); + instance->flag &= ~MEGASAS_FW_BUSY; + if (instance->is_imr) { + instance->host->can_queue = + instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; + } else + instance->host->can_queue = + instance->max_fw_cmds - MEGASAS_INT_CMDS; + + spin_unlock_irqrestore(instance->host->host_lock, flags); + } +} + +/** + * megasas_complete_cmd_dpc - Returns FW's controller structure + * @instance_addr: Address of adapter soft state + * + * Tasklet to complete cmds + */ +static void megasas_complete_cmd_dpc(unsigned long instance_addr) +{ + u32 producer; + u32 consumer; + u32 context; + struct megasas_cmd *cmd; + struct megasas_instance *instance = + (struct megasas_instance *)instance_addr; + unsigned long flags; + + /* If we have already declared adapter dead, donot complete cmds */ + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) + return; + + spin_lock_irqsave(&instance->completion_lock, flags); + + producer = le32_to_cpu(*instance->producer); + consumer = le32_to_cpu(*instance->consumer); + + while (consumer != producer) { + context = le32_to_cpu(instance->reply_queue[consumer]); + if (context >= instance->max_fw_cmds) { + printk(KERN_ERR "Unexpected context value %x\n", + context); + BUG(); + } + + cmd = instance->cmd_list[context]; + + megasas_complete_cmd(instance, cmd, DID_OK); + + consumer++; + if (consumer == (instance->max_fw_cmds + 1)) { + consumer = 0; + } + } + + *instance->consumer = cpu_to_le32(producer); + + spin_unlock_irqrestore(&instance->completion_lock, flags); + + /* + * Check if we can restore can_queue + */ + megasas_check_and_restore_queue_depth(instance); +} + +/** + * megasas_start_timer - Initializes a timer object + * @instance: Adapter soft state + * @timer: timer object to be initialized + * @fn: timer function + * @interval: time interval between timer function call + * + */ +void megasas_start_timer(struct megasas_instance *instance, + struct timer_list *timer, + void *fn, unsigned long interval) +{ + init_timer(timer); + timer->expires = jiffies + interval; + timer->data = (unsigned long)instance; + timer->function = fn; + add_timer(timer); +} + +static void +megasas_internal_reset_defer_cmds(struct megasas_instance *instance); + +static void +process_fw_state_change_wq(struct work_struct *work); + +void megasas_do_ocr(struct megasas_instance *instance) +{ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { + *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); + } + instance->instancet->disable_intr(instance); + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + instance->issuepend_done = 0; + + atomic_set(&instance->fw_outstanding, 0); + megasas_internal_reset_defer_cmds(instance); + process_fw_state_change_wq(&instance->work_init); +} + +/* This function will get the current SR-IOV LD/VF affiliation */ +static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, + int initial) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; + struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; + struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; + dma_addr_t new_affiliation_h; + dma_addr_t new_affiliation_111_h; + int ld, retval = 0; + u8 thisVf; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: megasas_get_ld_vf_" + "affiliation: Failed to get cmd for scsi%d.\n", + instance->host->host_no); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + if (!instance->vf_affiliation && !instance->vf_affiliation_111) { + printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF " + "affiliation for scsi%d.\n", instance->host->host_no); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + if (initial) + if (instance->PlasmaFW111) + memset(instance->vf_affiliation_111, 0, + sizeof(struct MR_LD_VF_AFFILIATION_111)); + else + memset(instance->vf_affiliation, 0, + (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION)); + else { + if (instance->PlasmaFW111) + new_affiliation_111 = + pci_alloc_consistent(instance->pdev, + sizeof(struct MR_LD_VF_AFFILIATION_111), + &new_affiliation_111_h); + else + new_affiliation = + pci_alloc_consistent(instance->pdev, + (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION), + &new_affiliation_h); + if (!new_affiliation && !new_affiliation_111) { + printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " + "memory for new affiliation for scsi%d.\n", + instance->host->host_no); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + if (instance->PlasmaFW111) + memset(new_affiliation_111, 0, + sizeof(struct MR_LD_VF_AFFILIATION_111)); + else + memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION)); + } + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_BOTH; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + if (instance->PlasmaFW111) { + dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111); + dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111; + } else { + dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION); + dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS; + } + + if (initial) { + if (instance->PlasmaFW111) + dcmd->sgl.sge32[0].phys_addr = + instance->vf_affiliation_111_h; + else + dcmd->sgl.sge32[0].phys_addr = + instance->vf_affiliation_h; + } else { + if (instance->PlasmaFW111) + dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h; + else + dcmd->sgl.sge32[0].phys_addr = new_affiliation_h; + } + if (instance->PlasmaFW111) + dcmd->sgl.sge32[0].length = + sizeof(struct MR_LD_VF_AFFILIATION_111); + else + dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION); + + printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " + "scsi%d\n", instance->host->host_no); + + megasas_issue_blocked_cmd(instance, cmd, 0); + + if (dcmd->cmd_status) { + printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" + " failed with status 0x%x for scsi%d.\n", + dcmd->cmd_status, instance->host->host_no); + retval = 1; /* Do a scan if we couldn't get affiliation */ + goto out; + } + + if (!initial) { + if (instance->PlasmaFW111) { + if (!new_affiliation_111->vdCount) { + printk(KERN_WARNING "megasas: SR-IOV: Got new " + "LD/VF affiliation for passive path " + "for scsi%d.\n", + instance->host->host_no); + retval = 1; + goto out; + } + thisVf = new_affiliation_111->thisVf; + for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) + if (instance->vf_affiliation_111->map[ld].policy[thisVf] != new_affiliation_111->map[ld].policy[thisVf]) { + printk(KERN_WARNING "megasas: SR-IOV: " + "Got new LD/VF affiliation " + "for scsi%d.\n", + instance->host->host_no); + memcpy(instance->vf_affiliation_111, + new_affiliation_111, + sizeof(struct MR_LD_VF_AFFILIATION_111)); + retval = 1; + goto out; + } + } else { + if (!new_affiliation->ldCount) { + printk(KERN_WARNING "megasas: SR-IOV: Got new " + "LD/VF affiliation for passive " + "path for scsi%d.\n", + instance->host->host_no); + retval = 1; + goto out; + } + newmap = new_affiliation->map; + savedmap = instance->vf_affiliation->map; + thisVf = new_affiliation->thisVf; + for (ld = 0 ; ld < new_affiliation->ldCount; ld++) { + if (savedmap->policy[thisVf] != + newmap->policy[thisVf]) { + printk(KERN_WARNING "megasas: SR-IOV: " + "Got new LD/VF affiliation " + "for scsi%d.\n", + instance->host->host_no); + memcpy(instance->vf_affiliation, + new_affiliation, + new_affiliation->size); + retval = 1; + goto out; + } + savedmap = (struct MR_LD_VF_MAP *) + ((unsigned char *)savedmap + + savedmap->size); + newmap = (struct MR_LD_VF_MAP *) + ((unsigned char *)newmap + + newmap->size); + } + } + } +out: + if (new_affiliation) { + if (instance->PlasmaFW111) + pci_free_consistent(instance->pdev, + sizeof(struct MR_LD_VF_AFFILIATION_111), + new_affiliation_111, + new_affiliation_111_h); + else + pci_free_consistent(instance->pdev, + (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION), + new_affiliation, new_affiliation_h); + } + megasas_return_cmd(instance, cmd); + + return retval; +} + +/* This function will tell FW to start the SR-IOV heartbeat */ +int megasas_sriov_start_heartbeat(struct megasas_instance *instance, + int initial) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + int retval = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: " + "Failed to get cmd for scsi%d.\n", + instance->host->host_no); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + if (initial) { + instance->hb_host_mem = + pci_alloc_consistent(instance->pdev, + sizeof(struct MR_CTRL_HB_HOST_MEM), + &instance->hb_host_mem_h); + if (!instance->hb_host_mem) { + printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate" + " memory for heartbeat host memory for " + "scsi%d.\n", instance->host->host_no); + retval = -ENOMEM; + goto out; + } + memset(instance->hb_host_mem, 0, + sizeof(struct MR_CTRL_HB_HOST_MEM)); + } + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM); + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_BOTH; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM); + dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC; + dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h; + dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM); + + printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n", + instance->host->host_no); + + if (!megasas_issue_polled(instance, cmd)) { + retval = 0; + } else { + printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" + "_MEM_ALLOC DCMD timed out for scsi%d\n", + instance->host->host_no); + retval = 1; + goto out; + } + + + if (dcmd->cmd_status) { + printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" + "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n", + dcmd->cmd_status, + instance->host->host_no); + retval = 1; + goto out; + } + +out: + megasas_return_cmd(instance, cmd); + + return retval; +} + +/* Handler for SR-IOV heartbeat */ +void megasas_sriov_heartbeat_handler(unsigned long instance_addr) +{ + struct megasas_instance *instance = + (struct megasas_instance *)instance_addr; + + if (instance->hb_host_mem->HB.fwCounter != + instance->hb_host_mem->HB.driverCounter) { + instance->hb_host_mem->HB.driverCounter = + instance->hb_host_mem->HB.fwCounter; + mod_timer(&instance->sriov_heartbeat_timer, + jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); + } else { + printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never " + "completed for scsi%d\n", instance->host->host_no); + schedule_work(&instance->work_init); + } +} + +/** + * megasas_wait_for_outstanding - Wait for all outstanding cmds + * @instance: Adapter soft state + * + * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to + * complete all its outstanding commands. Returns error if one or more IOs + * are pending after this time period. It also marks the controller dead. + */ +static int megasas_wait_for_outstanding(struct megasas_instance *instance) +{ + int i; + u32 reset_index; + u32 wait_time = MEGASAS_RESET_WAIT_TIME; + u8 adprecovery; + unsigned long flags; + struct list_head clist_local; + struct megasas_cmd *reset_cmd; + u32 fw_state; + u8 kill_adapter_flag; + + spin_lock_irqsave(&instance->hba_lock, flags); + adprecovery = instance->adprecovery; + spin_unlock_irqrestore(&instance->hba_lock, flags); + + if (adprecovery != MEGASAS_HBA_OPERATIONAL) { + + INIT_LIST_HEAD(&clist_local); + spin_lock_irqsave(&instance->hba_lock, flags); + list_splice_init(&instance->internal_reset_pending_q, + &clist_local); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); + for (i = 0; i < wait_time; i++) { + msleep(1000); + spin_lock_irqsave(&instance->hba_lock, flags); + adprecovery = instance->adprecovery; + spin_unlock_irqrestore(&instance->hba_lock, flags); + if (adprecovery == MEGASAS_HBA_OPERATIONAL) + break; + } + + if (adprecovery != MEGASAS_HBA_OPERATIONAL) { + printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); + spin_lock_irqsave(&instance->hba_lock, flags); + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + spin_unlock_irqrestore(&instance->hba_lock, flags); + return FAILED; + } + + reset_index = 0; + while (!list_empty(&clist_local)) { + reset_cmd = list_entry((&clist_local)->next, + struct megasas_cmd, list); + list_del_init(&reset_cmd->list); + if (reset_cmd->scmd) { + reset_cmd->scmd->result = DID_RESET << 16; + printk(KERN_NOTICE "%d:%p reset [%02x]\n", + reset_index, reset_cmd, + reset_cmd->scmd->cmnd[0]); + + reset_cmd->scmd->scsi_done(reset_cmd->scmd); + megasas_return_cmd(instance, reset_cmd); + } else if (reset_cmd->sync_cmd) { + printk(KERN_NOTICE "megasas:%p synch cmds" + "reset queue\n", + reset_cmd); + + reset_cmd->cmd_status = ENODATA; + instance->instancet->fire_cmd(instance, + reset_cmd->frame_phys_addr, + 0, instance->reg_set); + } else { + printk(KERN_NOTICE "megasas: %p unexpected" + "cmds lst\n", + reset_cmd); + } + reset_index++; + } + + return SUCCESS; + } + + for (i = 0; i < resetwaittime; i++) { + + int outstanding = atomic_read(&instance->fw_outstanding); + + if (!outstanding) + break; + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: [%2d]waiting for %d " + "commands to complete\n",i,outstanding); + /* + * Call cmd completion routine. Cmd to be + * be completed directly without depending on isr. + */ + megasas_complete_cmd_dpc((unsigned long)instance); + } + + msleep(1000); + } + + i = 0; + kill_adapter_flag = 0; + do { + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + if ((fw_state == MFI_STATE_FAULT) && + (instance->disableOnlineCtrlReset == 0)) { + if (i == 3) { + kill_adapter_flag = 2; + break; + } + megasas_do_ocr(instance); + kill_adapter_flag = 1; + + /* wait for 1 secs to let FW finish the pending cmds */ + msleep(1000); + } + i++; + } while (i <= 3); + + if (atomic_read(&instance->fw_outstanding) && + !kill_adapter_flag) { + if (instance->disableOnlineCtrlReset == 0) { + + megasas_do_ocr(instance); + + /* wait for 5 secs to let FW finish the pending cmds */ + for (i = 0; i < wait_time; i++) { + int outstanding = + atomic_read(&instance->fw_outstanding); + if (!outstanding) + return SUCCESS; + msleep(1000); + } + } + } + + if (atomic_read(&instance->fw_outstanding) || + (kill_adapter_flag == 2)) { + printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); + /* + * Send signal to FW to stop processing any pending cmds. + * The controller will be taken offline by the OS now. + */ + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + writel(MFI_STOP_ADP, + &instance->reg_set->doorbell); + } else { + writel(MFI_STOP_ADP, + &instance->reg_set->inbound_doorbell); + } + megasas_dump_pending_frames(instance); + spin_lock_irqsave(&instance->hba_lock, flags); + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + spin_unlock_irqrestore(&instance->hba_lock, flags); + return FAILED; + } + + printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); + + return SUCCESS; +} + +/** + * megasas_generic_reset - Generic reset routine + * @scmd: Mid-layer SCSI command + * + * This routine implements a generic reset handler for device, bus and host + * reset requests. Device, bus and host specific reset handlers can use this + * function after they do their specific tasks. + */ +static int megasas_generic_reset(struct scsi_cmnd *scmd) +{ + int ret_val; + struct megasas_instance *instance; + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", + scmd->cmnd[0], scmd->retries); + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + printk(KERN_ERR "megasas: cannot recover from previous reset " + "failures\n"); + return FAILED; + } + + ret_val = megasas_wait_for_outstanding(instance); + if (ret_val == SUCCESS) + printk(KERN_NOTICE "megasas: reset successful \n"); + else + printk(KERN_ERR "megasas: failed to do reset\n"); + + return ret_val; +} + +/** + * megasas_reset_timer - quiesce the adapter if required + * @scmd: scsi cmnd + * + * Sets the FW busy flag and reduces the host->can_queue if the + * cmd has not been completed within the timeout period. + */ +static enum +blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) +{ + struct megasas_instance *instance; + unsigned long flags; + + if (time_after(jiffies, scmd->jiffies_at_alloc + + (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { + return BLK_EH_NOT_HANDLED; + } + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + if (!(instance->flag & MEGASAS_FW_BUSY)) { + /* FW is busy, throttle IO */ + spin_lock_irqsave(instance->host->host_lock, flags); + + instance->host->can_queue = instance->throttlequeuedepth; + instance->last_time = jiffies; + instance->flag |= MEGASAS_FW_BUSY; + + spin_unlock_irqrestore(instance->host->host_lock, flags); + } + return BLK_EH_RESET_TIMER; +} + +/** + * megasas_reset_device - Device reset handler entry point + */ +static int megasas_reset_device(struct scsi_cmnd *scmd) +{ + int ret; + + /* + * First wait for all commands to complete + */ + ret = megasas_generic_reset(scmd); + + return ret; +} + +/** + * megasas_reset_bus_host - Bus & host reset handler entry point + */ +static int megasas_reset_bus_host(struct scsi_cmnd *scmd) +{ + int ret; + struct megasas_instance *instance; + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + /* + * First wait for all commands to complete + */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + ret = megasas_reset_fusion(scmd->device->host, 1); + else + ret = megasas_generic_reset(scmd); + + return ret; +} + +/** + * megasas_bios_param - Returns disk geometry for a disk + * @sdev: device handle + * @bdev: block device + * @capacity: drive capacity + * @geom: geometry parameters + */ +static int +megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, + sector_t capacity, int geom[]) +{ + int heads; + int sectors; + sector_t cylinders; + unsigned long tmp; + /* Default heads (64) & sectors (32) */ + heads = 64; + sectors = 32; + + tmp = heads * sectors; + cylinders = capacity; + + sector_div(cylinders, tmp); + + /* + * Handle extended translation size for logical drives > 1Gb + */ + + if (capacity >= 0x200000) { + heads = 255; + sectors = 63; + tmp = heads*sectors; + cylinders = capacity; + sector_div(cylinders, tmp); + } + + geom[0] = heads; + geom[1] = sectors; + geom[2] = cylinders; + + return 0; +} + +static void megasas_aen_polling(struct work_struct *work); + +/** + * megasas_service_aen - Processes an event notification + * @instance: Adapter soft state + * @cmd: AEN command completed by the ISR + * + * For AEN, driver sends a command down to FW that is held by the FW till an + * event occurs. When an event of interest occurs, FW completes the command + * that it was previously holding. + * + * This routines sends SIGIO signal to processes that have registered with the + * driver for AEN. + */ +static void +megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + unsigned long flags; + /* + * Don't signal app if it is just an aborted previously registered aen + */ + if ((!cmd->abort_aen) && (instance->unload == 0)) { + spin_lock_irqsave(&poll_aen_lock, flags); + megasas_poll_wait_aen = 1; + spin_unlock_irqrestore(&poll_aen_lock, flags); + wake_up(&megasas_poll_wait); + kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); + } + else + cmd->abort_aen = 0; + + instance->aen_cmd = NULL; + megasas_return_cmd(instance, cmd); + + if ((instance->unload == 0) && + ((instance->issuepend_done == 1))) { + struct megasas_aen_event *ev; + ev = kzalloc(sizeof(*ev), GFP_ATOMIC); + if (!ev) { + printk(KERN_ERR "megasas_service_aen: out of memory\n"); + } else { + ev->instance = instance; + instance->ev = ev; + INIT_DELAYED_WORK(&ev->hotplug_work, + megasas_aen_polling); + schedule_delayed_work(&ev->hotplug_work, 0); + } + } +} + +static int megasas_change_queue_depth(struct scsi_device *sdev, + int queue_depth, int reason) +{ + if (reason != SCSI_QDEPTH_DEFAULT) + return -EOPNOTSUPP; + + if (queue_depth > sdev->host->can_queue) + queue_depth = sdev->host->can_queue; + scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), + queue_depth); + + return queue_depth; +} + +/* + * Scsi host template for megaraid_sas driver + */ +static struct scsi_host_template megasas_template = { + + .module = THIS_MODULE, + .name = "LSI SAS based MegaRAID driver", + .proc_name = "megaraid_sas", + .slave_configure = megasas_slave_configure, + .slave_alloc = megasas_slave_alloc, + .queuecommand = megasas_queue_command, + .eh_device_reset_handler = megasas_reset_device, + .eh_bus_reset_handler = megasas_reset_bus_host, + .eh_host_reset_handler = megasas_reset_bus_host, + .eh_timed_out = megasas_reset_timer, + .bios_param = megasas_bios_param, + .use_clustering = ENABLE_CLUSTERING, + .change_queue_depth = megasas_change_queue_depth, + .no_write_same = 1, +}; + +/** + * megasas_complete_int_cmd - Completes an internal command + * @instance: Adapter soft state + * @cmd: Command to be completed + * + * The megasas_issue_blocked_cmd() function waits for a command to complete + * after it issues a command. This function wakes up that waiting routine by + * calling wake_up() on the wait queue. + */ +static void +megasas_complete_int_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + cmd->cmd_status = cmd->frame->io.cmd_status; + + if (cmd->cmd_status == ENODATA) { + cmd->cmd_status = 0; + } + wake_up(&instance->int_cmd_wait_q); +} + +/** + * megasas_complete_abort - Completes aborting a command + * @instance: Adapter soft state + * @cmd: Cmd that was issued to abort another cmd + * + * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q + * after it issues an abort on a previously issued command. This function + * wakes up all functions waiting on the same wait queue. + */ +static void +megasas_complete_abort(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + if (cmd->sync_cmd) { + cmd->sync_cmd = 0; + cmd->cmd_status = 0; + wake_up(&instance->abort_cmd_wait_q); + } + + return; +} + +/** + * megasas_complete_cmd - Completes a command + * @instance: Adapter soft state + * @cmd: Command to be completed + * @alt_status: If non-zero, use this value as status to + * SCSI mid-layer instead of the value returned + * by the FW. This should be used if caller wants + * an alternate status (as in the case of aborted + * commands) + */ +void +megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, + u8 alt_status) +{ + int exception = 0; + struct megasas_header *hdr = &cmd->frame->hdr; + unsigned long flags; + struct fusion_context *fusion = instance->ctrl_context; + u32 opcode; + + /* flag for the retry reset */ + cmd->retry_for_fw_reset = 0; + + if (cmd->scmd) + cmd->scmd->SCp.ptr = NULL; + + switch (hdr->cmd) { + case MFI_CMD_INVALID: + /* Some older 1068 controller FW may keep a pended + MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel + when booting the kdump kernel. Ignore this command to + prevent a kernel panic on shutdown of the kdump kernel. */ + printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " + "completed.\n"); + printk(KERN_WARNING "megaraid_sas: If you have a controller " + "other than PERC5, please upgrade your firmware.\n"); + break; + case MFI_CMD_PD_SCSI_IO: + case MFI_CMD_LD_SCSI_IO: + + /* + * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been + * issued either through an IO path or an IOCTL path. If it + * was via IOCTL, we will send it to internal completion. + */ + if (cmd->sync_cmd) { + cmd->sync_cmd = 0; + megasas_complete_int_cmd(instance, cmd); + break; + } + + case MFI_CMD_LD_READ: + case MFI_CMD_LD_WRITE: + + if (alt_status) { + cmd->scmd->result = alt_status << 16; + exception = 1; + } + + if (exception) { + + atomic_dec(&instance->fw_outstanding); + + scsi_dma_unmap(cmd->scmd); + cmd->scmd->scsi_done(cmd->scmd); + megasas_return_cmd(instance, cmd); + + break; + } + + switch (hdr->cmd_status) { + + case MFI_STAT_OK: + cmd->scmd->result = DID_OK << 16; + break; + + case MFI_STAT_SCSI_IO_FAILED: + case MFI_STAT_LD_INIT_IN_PROGRESS: + cmd->scmd->result = + (DID_ERROR << 16) | hdr->scsi_status; + break; + + case MFI_STAT_SCSI_DONE_WITH_ERROR: + + cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; + + if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { + memset(cmd->scmd->sense_buffer, 0, + SCSI_SENSE_BUFFERSIZE); + memcpy(cmd->scmd->sense_buffer, cmd->sense, + hdr->sense_len); + + cmd->scmd->result |= DRIVER_SENSE << 24; + } + + break; + + case MFI_STAT_LD_OFFLINE: + case MFI_STAT_DEVICE_NOT_FOUND: + cmd->scmd->result = DID_BAD_TARGET << 16; + break; + + default: + printk(KERN_DEBUG "megasas: MFI FW status %#x\n", + hdr->cmd_status); + cmd->scmd->result = DID_ERROR << 16; + break; + } + + atomic_dec(&instance->fw_outstanding); + + scsi_dma_unmap(cmd->scmd); + cmd->scmd->scsi_done(cmd->scmd); + megasas_return_cmd(instance, cmd); + + break; + + case MFI_CMD_SMP: + case MFI_CMD_STP: + case MFI_CMD_DCMD: + opcode = le32_to_cpu(cmd->frame->dcmd.opcode); + /* Check for LD map update */ + if ((opcode == MR_DCMD_LD_MAP_GET_INFO) + && (cmd->frame->dcmd.mbox.b[1] == 1)) { + fusion->fast_path_io = 0; + spin_lock_irqsave(instance->host->host_lock, flags); + if (cmd->frame->hdr.cmd_status != 0) { + if (cmd->frame->hdr.cmd_status != + MFI_STAT_NOT_FOUND) + printk(KERN_WARNING "megasas: map sync" + "failed, status = 0x%x.\n", + cmd->frame->hdr.cmd_status); + else { + megasas_return_cmd(instance, cmd); + spin_unlock_irqrestore( + instance->host->host_lock, + flags); + break; + } + } else + instance->map_id++; + megasas_return_cmd(instance, cmd); + + /* + * Set fast path IO to ZERO. + * Validate Map will set proper value. + * Meanwhile all IOs will go as LD IO. + */ + if (MR_ValidateMapInfo(instance)) + fusion->fast_path_io = 1; + else + fusion->fast_path_io = 0; + megasas_sync_map_info(instance); + spin_unlock_irqrestore(instance->host->host_lock, + flags); + break; + } + if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || + opcode == MR_DCMD_CTRL_EVENT_GET) { + spin_lock_irqsave(&poll_aen_lock, flags); + megasas_poll_wait_aen = 0; + spin_unlock_irqrestore(&poll_aen_lock, flags); + } + + /* + * See if got an event notification + */ + if (opcode == MR_DCMD_CTRL_EVENT_WAIT) + megasas_service_aen(instance, cmd); + else + megasas_complete_int_cmd(instance, cmd); + + break; + + case MFI_CMD_ABORT: + /* + * Cmd issued to abort another cmd returned + */ + megasas_complete_abort(instance, cmd); + break; + + default: + printk("megasas: Unknown command completed! [0x%X]\n", + hdr->cmd); + break; + } +} + +/** + * megasas_issue_pending_cmds_again - issue all pending cmds + * in FW again because of the fw reset + * @instance: Adapter soft state + */ +static inline void +megasas_issue_pending_cmds_again(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + struct list_head clist_local; + union megasas_evt_class_locale class_locale; + unsigned long flags; + u32 seq_num; + + INIT_LIST_HEAD(&clist_local); + spin_lock_irqsave(&instance->hba_lock, flags); + list_splice_init(&instance->internal_reset_pending_q, &clist_local); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + while (!list_empty(&clist_local)) { + cmd = list_entry((&clist_local)->next, + struct megasas_cmd, list); + list_del_init(&cmd->list); + + if (cmd->sync_cmd || cmd->scmd) { + printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" + "detected to be pending while HBA reset.\n", + cmd, cmd->scmd, cmd->sync_cmd); + + cmd->retry_for_fw_reset++; + + if (cmd->retry_for_fw_reset == 3) { + printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" + "was tried multiple times during reset." + "Shutting down the HBA\n", + cmd, cmd->scmd, cmd->sync_cmd); + megaraid_sas_kill_hba(instance); + + instance->adprecovery = + MEGASAS_HW_CRITICAL_ERROR; + return; + } + } + + if (cmd->sync_cmd == 1) { + if (cmd->scmd) { + printk(KERN_NOTICE "megaraid_sas: unexpected" + "cmd attached to internal command!\n"); + } + printk(KERN_NOTICE "megasas: %p synchronous cmd" + "on the internal reset queue," + "issue it again.\n", cmd); + cmd->cmd_status = ENODATA; + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr , + 0, instance->reg_set); + } else if (cmd->scmd) { + printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" + "detected on the internal queue, issue again.\n", + cmd, cmd->scmd->cmnd[0]); + + atomic_inc(&instance->fw_outstanding); + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr, + cmd->frame_count-1, instance->reg_set); + } else { + printk(KERN_NOTICE "megasas: %p unexpected cmd on the" + "internal reset defer list while re-issue!!\n", + cmd); + } + } + + if (instance->aen_cmd) { + printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); + megasas_return_cmd(instance, instance->aen_cmd); + + instance->aen_cmd = NULL; + } + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + seq_num = instance->last_seq_num; + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + + megasas_register_aen(instance, seq_num, class_locale.word); +} + +/** + * Move the internal reset pending commands to a deferred queue. + * + * We move the commands pending at internal reset time to a + * pending queue. This queue would be flushed after successful + * completion of the internal reset sequence. if the internal reset + * did not complete in time, the kernel reset handler would flush + * these commands. + **/ +static void +megasas_internal_reset_defer_cmds(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + int i; + u32 max_cmd = instance->max_fw_cmds; + u32 defer_index; + unsigned long flags; + + defer_index = 0; + spin_lock_irqsave(&instance->cmd_pool_lock, flags); + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + if (cmd->sync_cmd == 1 || cmd->scmd) { + printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" + "on the defer queue as internal\n", + defer_index, cmd, cmd->sync_cmd, cmd->scmd); + + if (!list_empty(&cmd->list)) { + printk(KERN_NOTICE "megaraid_sas: ERROR while" + " moving this cmd:%p, %d %p, it was" + "discovered on some list?\n", + cmd, cmd->sync_cmd, cmd->scmd); + + list_del_init(&cmd->list); + } + defer_index++; + list_add_tail(&cmd->list, + &instance->internal_reset_pending_q); + } + } + spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); +} + + +static void +process_fw_state_change_wq(struct work_struct *work) +{ + struct megasas_instance *instance = + container_of(work, struct megasas_instance, work_init); + u32 wait; + unsigned long flags; + + if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { + printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", + instance->adprecovery); + return ; + } + + if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { + printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" + "state, restarting it...\n"); + + instance->instancet->disable_intr(instance); + atomic_set(&instance->fw_outstanding, 0); + + atomic_set(&instance->fw_reset_no_pci_access, 1); + instance->instancet->adp_reset(instance, instance->reg_set); + atomic_set(&instance->fw_reset_no_pci_access, 0 ); + + printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," + "initiating next stage...\n"); + + printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," + "state 2 starting...\n"); + + /*waitting for about 20 second before start the second init*/ + for (wait = 0; wait < 30; wait++) { + msleep(1000); + } + + if (megasas_transition_to_ready(instance, 1)) { + printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); + + megaraid_sas_kill_hba(instance); + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + return ; + } + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) + ) { + *instance->consumer = *instance->producer; + } else { + *instance->consumer = 0; + *instance->producer = 0; + } + + megasas_issue_init_mfi(instance); + + spin_lock_irqsave(&instance->hba_lock, flags); + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + spin_unlock_irqrestore(&instance->hba_lock, flags); + instance->instancet->enable_intr(instance); + + megasas_issue_pending_cmds_again(instance); + instance->issuepend_done = 1; + } + return ; +} + +/** + * megasas_deplete_reply_queue - Processes all completed commands + * @instance: Adapter soft state + * @alt_status: Alternate status to be returned to + * SCSI mid-layer instead of the status + * returned by the FW + * Note: this must be called with hba lock held + */ +static int +megasas_deplete_reply_queue(struct megasas_instance *instance, + u8 alt_status) +{ + u32 mfiStatus; + u32 fw_state; + + if ((mfiStatus = instance->instancet->check_reset(instance, + instance->reg_set)) == 1) { + return IRQ_HANDLED; + } + + if ((mfiStatus = instance->instancet->clear_intr( + instance->reg_set) + ) == 0) { + /* Hardware may not set outbound_intr_status in MSI-X mode */ + if (!instance->msix_vectors) + return IRQ_NONE; + } + + instance->mfiStatus = mfiStatus; + + if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + + if (fw_state != MFI_STATE_FAULT) { + printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", + fw_state); + } + + if ((fw_state == MFI_STATE_FAULT) && + (instance->disableOnlineCtrlReset == 0)) { + printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); + + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == + PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_VERDE_ZCR)) { + + *instance->consumer = + cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); + } + + + instance->instancet->disable_intr(instance); + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + instance->issuepend_done = 0; + + atomic_set(&instance->fw_outstanding, 0); + megasas_internal_reset_defer_cmds(instance); + + printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", + fw_state, instance->adprecovery); + + schedule_work(&instance->work_init); + return IRQ_HANDLED; + + } else { + printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", + fw_state, instance->disableOnlineCtrlReset); + } + } + + tasklet_schedule(&instance->isr_tasklet); + return IRQ_HANDLED; +} +/** + * megasas_isr - isr entry point + */ +static irqreturn_t megasas_isr(int irq, void *devp) +{ + struct megasas_irq_context *irq_context = devp; + struct megasas_instance *instance = irq_context->instance; + unsigned long flags; + irqreturn_t rc; + + if (atomic_read(&instance->fw_reset_no_pci_access)) + return IRQ_HANDLED; + + spin_lock_irqsave(&instance->hba_lock, flags); + rc = megasas_deplete_reply_queue(instance, DID_OK); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + return rc; +} + +/** + * megasas_transition_to_ready - Move the FW to READY state + * @instance: Adapter soft state + * + * During the initialization, FW passes can potentially be in any one of + * several possible states. If the FW in operational, waiting-for-handshake + * states, driver must take steps to bring it to ready state. Otherwise, it + * has to wait for the ready state. + */ +int +megasas_transition_to_ready(struct megasas_instance *instance, int ocr) +{ + int i; + u8 max_wait; + u32 fw_state; + u32 cur_state; + u32 abs_state, curr_abs_state; + + abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); + fw_state = abs_state & MFI_STATE_MASK; + + if (fw_state != MFI_STATE_READY) + printk(KERN_INFO "megasas: Waiting for FW to come to ready" + " state\n"); + + while (fw_state != MFI_STATE_READY) { + + switch (fw_state) { + + case MFI_STATE_FAULT: + printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); + if (ocr) { + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FAULT; + break; + } else + return -ENODEV; + + case MFI_STATE_WAIT_HANDSHAKE: + /* + * Set the CLR bit in inbound doorbell + */ + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FURY)) { + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->doorbell); + } else { + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + } + + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_WAIT_HANDSHAKE; + break; + + case MFI_STATE_BOOT_MESSAGE_PENDING: + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FURY)) { + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->doorbell); + } else + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; + break; + + case MFI_STATE_OPERATIONAL: + /* + * Bring it to READY state; assuming max wait 10 secs + */ + instance->instancet->disable_intr(instance); + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device + == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device + == PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device + == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device + == PCI_DEVICE_ID_LSI_FURY)) { + writel(MFI_RESET_FLAGS, + &instance->reg_set->doorbell); + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FURY)) { + for (i = 0; i < (10 * 1000); i += 20) { + if (readl( + &instance-> + reg_set-> + doorbell) & 1) + msleep(20); + else + break; + } + } + } else + writel(MFI_RESET_FLAGS, + &instance->reg_set->inbound_doorbell); + + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_OPERATIONAL; + break; + + case MFI_STATE_UNDEFINED: + /* + * This state should not last for more than 2 seconds + */ + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_UNDEFINED; + break; + + case MFI_STATE_BB_INIT: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_BB_INIT; + break; + + case MFI_STATE_FW_INIT: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FW_INIT; + break; + + case MFI_STATE_FW_INIT_2: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FW_INIT_2; + break; + + case MFI_STATE_DEVICE_SCAN: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_DEVICE_SCAN; + break; + + case MFI_STATE_FLUSH_CACHE: + max_wait = MEGASAS_RESET_WAIT_TIME; + cur_state = MFI_STATE_FLUSH_CACHE; + break; + + default: + printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", + fw_state); + return -ENODEV; + } + + /* + * The cur_state should not last for more than max_wait secs + */ + for (i = 0; i < (max_wait * 1000); i++) { + curr_abs_state = instance->instancet-> + read_fw_status_reg(instance->reg_set); + + if (abs_state == curr_abs_state) { + msleep(1); + } else + break; + } + + /* + * Return error if fw_state hasn't changed after max_wait + */ + if (curr_abs_state == abs_state) { + printk(KERN_DEBUG "FW state [%d] hasn't changed " + "in %d secs\n", fw_state, max_wait); + return -ENODEV; + } + + abs_state = curr_abs_state; + fw_state = curr_abs_state & MFI_STATE_MASK; + } + printk(KERN_INFO "megasas: FW now in Ready state\n"); + + return 0; +} + +/** + * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool + * @instance: Adapter soft state + */ +static void megasas_teardown_frame_pool(struct megasas_instance *instance) +{ + int i; + u32 max_cmd = instance->max_mfi_cmds; + struct megasas_cmd *cmd; + + if (!instance->frame_dma_pool) + return; + + /* + * Return all frames to pool + */ + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + if (cmd->frame) + pci_pool_free(instance->frame_dma_pool, cmd->frame, + cmd->frame_phys_addr); + + if (cmd->sense) + pci_pool_free(instance->sense_dma_pool, cmd->sense, + cmd->sense_phys_addr); + } + + /* + * Now destroy the pool itself + */ + pci_pool_destroy(instance->frame_dma_pool); + pci_pool_destroy(instance->sense_dma_pool); + + instance->frame_dma_pool = NULL; + instance->sense_dma_pool = NULL; +} + +/** + * megasas_create_frame_pool - Creates DMA pool for cmd frames + * @instance: Adapter soft state + * + * Each command packet has an embedded DMA memory buffer that is used for + * filling MFI frame and the SG list that immediately follows the frame. This + * function creates those DMA memory buffers for each command packet by using + * PCI pool facility. + */ +static int megasas_create_frame_pool(struct megasas_instance *instance) +{ + int i; + u32 max_cmd; + u32 sge_sz; + u32 sgl_sz; + u32 total_sz; + u32 frame_count; + struct megasas_cmd *cmd; + + max_cmd = instance->max_mfi_cmds; + + /* + * Size of our frame is 64 bytes for MFI frame, followed by max SG + * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer + */ + sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : + sizeof(struct megasas_sge32); + + if (instance->flag_ieee) { + sge_sz = sizeof(struct megasas_sge_skinny); + } + + /* + * Calculated the number of 64byte frames required for SGL + */ + sgl_sz = sge_sz * instance->max_num_sge; + frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; + frame_count = 15; + + /* + * We need one extra frame for the MFI command + */ + frame_count++; + + total_sz = MEGAMFI_FRAME_SIZE * frame_count; + /* + * Use DMA pool facility provided by PCI layer + */ + instance->frame_dma_pool = pci_pool_create("megasas frame pool", + instance->pdev, total_sz, 64, + 0); + + if (!instance->frame_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); + return -ENOMEM; + } + + instance->sense_dma_pool = pci_pool_create("megasas sense pool", + instance->pdev, 128, 4, 0); + + if (!instance->sense_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); + + pci_pool_destroy(instance->frame_dma_pool); + instance->frame_dma_pool = NULL; + + return -ENOMEM; + } + + /* + * Allocate and attach a frame to each of the commands in cmd_list. + * By making cmd->index as the context instead of the &cmd, we can + * always use 32bit context regardless of the architecture + */ + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + cmd->frame = pci_pool_alloc(instance->frame_dma_pool, + GFP_KERNEL, &cmd->frame_phys_addr); + + cmd->sense = pci_pool_alloc(instance->sense_dma_pool, + GFP_KERNEL, &cmd->sense_phys_addr); + + /* + * megasas_teardown_frame_pool() takes care of freeing + * whatever has been allocated + */ + if (!cmd->frame || !cmd->sense) { + printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); + megasas_teardown_frame_pool(instance); + return -ENOMEM; + } + + memset(cmd->frame, 0, total_sz); + cmd->frame->io.context = cpu_to_le32(cmd->index); + cmd->frame->io.pad_0 = 0; + if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && + (reset_devices)) + cmd->frame->hdr.cmd = MFI_CMD_INVALID; + } + + return 0; +} + +/** + * megasas_free_cmds - Free all the cmds in the free cmd pool + * @instance: Adapter soft state + */ +void megasas_free_cmds(struct megasas_instance *instance) +{ + int i; + /* First free the MFI frame pool */ + megasas_teardown_frame_pool(instance); + + /* Free all the commands in the cmd_list */ + for (i = 0; i < instance->max_mfi_cmds; i++) + + kfree(instance->cmd_list[i]); + + /* Free the cmd_list buffer itself */ + kfree(instance->cmd_list); + instance->cmd_list = NULL; + + INIT_LIST_HEAD(&instance->cmd_pool); +} + +/** + * megasas_alloc_cmds - Allocates the command packets + * @instance: Adapter soft state + * + * Each command that is issued to the FW, whether IO commands from the OS or + * internal commands like IOCTLs, are wrapped in local data structure called + * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to + * the FW. + * + * Each frame has a 32-bit field called context (tag). This context is used + * to get back the megasas_cmd from the frame when a frame gets completed in + * the ISR. Typically the address of the megasas_cmd itself would be used as + * the context. But we wanted to keep the differences between 32 and 64 bit + * systems to the mininum. We always use 32 bit integers for the context. In + * this driver, the 32 bit values are the indices into an array cmd_list. + * This array is used only to look up the megasas_cmd given the context. The + * free commands themselves are maintained in a linked list called cmd_pool. + */ +int megasas_alloc_cmds(struct megasas_instance *instance) +{ + int i; + int j; + u32 max_cmd; + struct megasas_cmd *cmd; + + max_cmd = instance->max_mfi_cmds; + + /* + * instance->cmd_list is an array of struct megasas_cmd pointers. + * Allocate the dynamic array first and then allocate individual + * commands. + */ + instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); + + if (!instance->cmd_list) { + printk(KERN_DEBUG "megasas: out of memory\n"); + return -ENOMEM; + } + + memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); + + for (i = 0; i < max_cmd; i++) { + instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), + GFP_KERNEL); + + if (!instance->cmd_list[i]) { + + for (j = 0; j < i; j++) + kfree(instance->cmd_list[j]); + + kfree(instance->cmd_list); + instance->cmd_list = NULL; + + return -ENOMEM; + } + } + + /* + * Add all the commands to command pool (instance->cmd_pool) + */ + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + memset(cmd, 0, sizeof(struct megasas_cmd)); + cmd->index = i; + cmd->scmd = NULL; + cmd->instance = instance; + + list_add_tail(&cmd->list, &instance->cmd_pool); + } + + /* + * Create a frame pool and assign one frame to each cmd + */ + if (megasas_create_frame_pool(instance)) { + printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); + megasas_free_cmds(instance); + } + + return 0; +} + +/* + * megasas_get_pd_list_info - Returns FW's pd_list structure + * @instance: Adapter soft state + * @pd_list: pd_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_pd_list(struct megasas_instance *instance) +{ + int ret = 0, pd_index = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_PD_LIST *ci; + struct MR_PD_ADDRESS *pd_addr; + dma_addr_t ci_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; + dcmd->mbox.b[1] = 0; + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); + dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + } else { + ret = -1; + } + + /* + * the following function will get the instance PD LIST. + */ + + pd_addr = ci->addr; + + if ( ret == 0 && + (le32_to_cpu(ci->count) < + (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { + + memset(instance->local_pd_list, 0, + MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); + + for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { + + instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = + le16_to_cpu(pd_addr->deviceId); + instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = + pd_addr->scsiDevType; + instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = + MR_PD_STATE_SYSTEM; + pd_addr++; + } + memcpy(instance->pd_list, instance->local_pd_list, + sizeof(instance->pd_list)); + } + + pci_free_consistent(instance->pdev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), + ci, ci_h); + megasas_return_cmd(instance, cmd); + + return ret; +} + +/* + * megasas_get_ld_list_info - Returns FW's ld_list structure + * @instance: Adapter soft state + * @ld_list: ld_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_ld_list(struct megasas_instance *instance) +{ + int ret = 0, ld_index = 0, ids = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_LIST *ci; + dma_addr_t ci_h = 0; + u32 ld_count; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + sizeof(struct MR_LD_LIST), + &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); + dcmd->timeout = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); + dcmd->pad_0 = 0; + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + } else { + ret = -1; + } + + ld_count = le32_to_cpu(ci->ldCount); + + /* the following function will get the instance PD LIST */ + + if ((ret == 0) && (ld_count <= MAX_LOGICAL_DRIVES)) { + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + + for (ld_index = 0; ld_index < ld_count; ld_index++) { + if (ci->ldList[ld_index].state != 0) { + ids = ci->ldList[ld_index].ref.targetId; + instance->ld_ids[ids] = + ci->ldList[ld_index].ref.targetId; + } + } + } + + pci_free_consistent(instance->pdev, + sizeof(struct MR_LD_LIST), + ci, + ci_h); + + megasas_return_cmd(instance, cmd); + return ret; +} + +/** + * megasas_ld_list_query - Returns FW's ld_list structure + * @instance: Adapter soft state + * @ld_list: ld_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) +{ + int ret = 0, ld_index = 0, ids = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_TARGETID_LIST *ci; + dma_addr_t ci_h = 0; + u32 tgtid_count; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_WARNING + "megasas:(megasas_ld_list_query): Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + sizeof(struct MR_LD_TARGETID_LIST), &ci_h); + + if (!ci) { + printk(KERN_WARNING + "megasas: Failed to alloc mem for ld_list_query\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.b[0] = query_type; + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); + dcmd->timeout = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); + dcmd->pad_0 = 0; + + if (!megasas_issue_polled(instance, cmd) && !dcmd->cmd_status) { + ret = 0; + } else { + /* On failure, call older LD list DCMD */ + ret = 1; + } + + tgtid_count = le32_to_cpu(ci->count); + + if ((ret == 0) && (tgtid_count <= (MAX_LOGICAL_DRIVES))) { + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + for (ld_index = 0; ld_index < tgtid_count; ld_index++) { + ids = ci->targetId[ld_index]; + instance->ld_ids[ids] = ci->targetId[ld_index]; + } + + } + + pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), + ci, ci_h); + + megasas_return_cmd(instance, cmd); + + return ret; +} + +/** + * megasas_get_controller_info - Returns FW's controller structure + * @instance: Adapter soft state + * @ctrl_info: Controller information structure + * + * Issues an internal command (DCMD) to get the FW's controller structure. + * This information is mainly used to find out the maximum IO transfer per + * command supported by the FW. + */ +static int +megasas_get_ctrl_info(struct megasas_instance *instance, + struct megasas_ctrl_info *ctrl_info) +{ + int ret = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct megasas_ctrl_info *ci; + dma_addr_t ci_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + sizeof(struct megasas_ctrl_info), &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); + } else { + ret = -1; + } + + pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), + ci, ci_h); + + megasas_return_cmd(instance, cmd); + return ret; +} + +/** + * megasas_issue_init_mfi - Initializes the FW + * @instance: Adapter soft state + * + * Issues the INIT MFI cmd + */ +static int +megasas_issue_init_mfi(struct megasas_instance *instance) +{ + u32 context; + + struct megasas_cmd *cmd; + + struct megasas_init_frame *init_frame; + struct megasas_init_queue_info *initq_info; + dma_addr_t init_frame_h; + dma_addr_t initq_info_h; + + /* + * Prepare a init frame. Note the init frame points to queue info + * structure. Each frame has SGL allocated after first 64 bytes. For + * this frame - since we don't need any SGL - we use SGL's space as + * queue info structure + * + * We will not get a NULL command below. We just created the pool. + */ + cmd = megasas_get_cmd(instance); + + init_frame = (struct megasas_init_frame *)cmd->frame; + initq_info = (struct megasas_init_queue_info *) + ((unsigned long)init_frame + 64); + + init_frame_h = cmd->frame_phys_addr; + initq_info_h = init_frame_h + 64; + + context = init_frame->context; + memset(init_frame, 0, MEGAMFI_FRAME_SIZE); + memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); + init_frame->context = context; + + initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); + initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); + + initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); + initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); + + init_frame->cmd = MFI_CMD_INIT; + init_frame->cmd_status = 0xFF; + init_frame->queue_info_new_phys_addr_lo = + cpu_to_le32(lower_32_bits(initq_info_h)); + init_frame->queue_info_new_phys_addr_hi = + cpu_to_le32(upper_32_bits(initq_info_h)); + + init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); + + /* + * disable the intr before firing the init frame to FW + */ + instance->instancet->disable_intr(instance); + + /* + * Issue the init frame in polled mode + */ + + if (megasas_issue_polled(instance, cmd)) { + printk(KERN_ERR "megasas: Failed to init firmware\n"); + megasas_return_cmd(instance, cmd); + goto fail_fw_init; + } + + megasas_return_cmd(instance, cmd); + + return 0; + +fail_fw_init: + return -EINVAL; +} + +static u32 +megasas_init_adapter_mfi(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *reg_set; + u32 context_sz; + u32 reply_q_sz; + + reg_set = instance->reg_set; + + /* + * Get various operational parameters from status register + */ + instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; + /* + * Reduce the max supported cmds by 1. This is to ensure that the + * reply_q_sz (1 more than the max cmd that driver may send) + * does not exceed max cmds that the FW can support + */ + instance->max_fw_cmds = instance->max_fw_cmds-1; + instance->max_mfi_cmds = instance->max_fw_cmds; + instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> + 0x10; + /* + * Create a pool of commands + */ + if (megasas_alloc_cmds(instance)) + goto fail_alloc_cmds; + + /* + * Allocate memory for reply queue. Length of reply queue should + * be _one_ more than the maximum commands handled by the firmware. + * + * Note: When FW completes commands, it places corresponding contex + * values in this circular reply queue. This circular queue is a fairly + * typical producer-consumer queue. FW is the producer (of completed + * commands) and the driver is the consumer. + */ + context_sz = sizeof(u32); + reply_q_sz = context_sz * (instance->max_fw_cmds + 1); + + instance->reply_queue = pci_alloc_consistent(instance->pdev, + reply_q_sz, + &instance->reply_queue_h); + + if (!instance->reply_queue) { + printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); + goto fail_reply_queue; + } + + if (megasas_issue_init_mfi(instance)) + goto fail_fw_init; + + instance->fw_support_ieee = 0; + instance->fw_support_ieee = + (instance->instancet->read_fw_status_reg(reg_set) & + 0x04000000); + + printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", + instance->fw_support_ieee); + + if (instance->fw_support_ieee) + instance->flag_ieee = 1; + + return 0; + +fail_fw_init: + + pci_free_consistent(instance->pdev, reply_q_sz, + instance->reply_queue, instance->reply_queue_h); +fail_reply_queue: + megasas_free_cmds(instance); + +fail_alloc_cmds: + return 1; +} + +/** + * megasas_init_fw - Initializes the FW + * @instance: Adapter soft state + * + * This is the main function for initializing firmware + */ + +static int megasas_init_fw(struct megasas_instance *instance) +{ + u32 max_sectors_1; + u32 max_sectors_2; + u32 tmp_sectors, msix_enable, scratch_pad_2; + resource_size_t base_addr; + struct megasas_register_set __iomem *reg_set; + struct megasas_ctrl_info *ctrl_info; + unsigned long bar_list; + int i, loop, fw_msix_count = 0; + struct IOV_111 *iovPtr; + + /* Find first memory bar */ + bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); + instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); + if (pci_request_selected_regions(instance->pdev, instance->bar, + "megasas: LSI")) { + printk(KERN_DEBUG "megasas: IO memory region busy!\n"); + return -EBUSY; + } + + base_addr = pci_resource_start(instance->pdev, instance->bar); + instance->reg_set = ioremap_nocache(base_addr, 8192); + + if (!instance->reg_set) { + printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); + goto fail_ioremap; + } + + reg_set = instance->reg_set; + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_PLASMA: + case PCI_DEVICE_ID_LSI_INVADER: + case PCI_DEVICE_ID_LSI_FURY: + instance->instancet = &megasas_instance_template_fusion; + break; + case PCI_DEVICE_ID_LSI_SAS1078R: + case PCI_DEVICE_ID_LSI_SAS1078DE: + instance->instancet = &megasas_instance_template_ppc; + break; + case PCI_DEVICE_ID_LSI_SAS1078GEN2: + case PCI_DEVICE_ID_LSI_SAS0079GEN2: + instance->instancet = &megasas_instance_template_gen2; + break; + case PCI_DEVICE_ID_LSI_SAS0073SKINNY: + case PCI_DEVICE_ID_LSI_SAS0071SKINNY: + instance->instancet = &megasas_instance_template_skinny; + break; + case PCI_DEVICE_ID_LSI_SAS1064R: + case PCI_DEVICE_ID_DELL_PERC5: + default: + instance->instancet = &megasas_instance_template_xscale; + break; + } + + if (megasas_transition_to_ready(instance, 0)) { + atomic_set(&instance->fw_reset_no_pci_access, 1); + instance->instancet->adp_reset + (instance, instance->reg_set); + atomic_set(&instance->fw_reset_no_pci_access, 0); + dev_info(&instance->pdev->dev, + "megasas: FW restarted successfully from %s!\n", + __func__); + + /*waitting for about 30 second before retry*/ + ssleep(30); + + if (megasas_transition_to_ready(instance, 0)) + goto fail_ready_state; + } + + /* + * MSI-X host index 0 is common for all adapter. + * It is used for all MPT based Adapters. + */ + instance->reply_post_host_index_addr[0] = + (u32 *)((u8 *)instance->reg_set + + MPI2_REPLY_POST_HOST_INDEX_OFFSET); + + /* Check if MSI-X is supported while in ready state */ + msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & + 0x4000000) >> 0x1a; + if (msix_enable && !msix_disable) { + scratch_pad_2 = readl + (&instance->reg_set->outbound_scratch_pad_2); + /* Check max MSI-X vectors */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) { + instance->msix_vectors = (scratch_pad_2 + & MR_MAX_REPLY_QUEUES_OFFSET) + 1; + fw_msix_count = instance->msix_vectors; + if (msix_vectors) + instance->msix_vectors = + min(msix_vectors, + instance->msix_vectors); + } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) + || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + /* Invader/Fury supports more than 8 MSI-X */ + instance->msix_vectors = ((scratch_pad_2 + & MR_MAX_REPLY_QUEUES_EXT_OFFSET) + >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; + fw_msix_count = instance->msix_vectors; + /* Save 1-15 reply post index address to local memory + * Index 0 is already saved from reg offset + * MPI2_REPLY_POST_HOST_INDEX_OFFSET + */ + for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { + instance->reply_post_host_index_addr[loop] = + (u32 *)((u8 *)instance->reg_set + + MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET + + (loop * 0x10)); + } + if (msix_vectors) + instance->msix_vectors = min(msix_vectors, + instance->msix_vectors); + } else + instance->msix_vectors = 1; + /* Don't bother allocating more MSI-X vectors than cpus */ + instance->msix_vectors = min(instance->msix_vectors, + (unsigned int)num_online_cpus()); + for (i = 0; i < instance->msix_vectors; i++) + instance->msixentry[i].entry = i; + i = pci_enable_msix(instance->pdev, instance->msixentry, + instance->msix_vectors); + if (i >= 0) { + if (i) { + if (!pci_enable_msix(instance->pdev, + instance->msixentry, i)) + instance->msix_vectors = i; + else + instance->msix_vectors = 0; + } + } else + instance->msix_vectors = 0; + + dev_info(&instance->pdev->dev, "[scsi%d]: FW supports" + "<%d> MSIX vector,Online CPUs: <%d>," + "Current MSIX <%d>\n", instance->host->host_no, + fw_msix_count, (unsigned int)num_online_cpus(), + instance->msix_vectors); + } + + /* Get operational params, sge flags, send init cmd to controller */ + if (instance->instancet->init_adapter(instance)) + goto fail_init_adapter; + + printk(KERN_ERR "megasas: INIT adapter done\n"); + + /** for passthrough + * the following function will get the PD LIST. + */ + + memset(instance->pd_list, 0 , + (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); + if (megasas_get_pd_list(instance) < 0) { + printk(KERN_ERR "megasas: failed to get PD list\n"); + goto fail_init_adapter; + } + + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + if (megasas_ld_list_query(instance, + MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) + megasas_get_ld_list(instance); + + ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); + + /* + * Compute the max allowed sectors per IO: The controller info has two + * limits on max sectors. Driver should use the minimum of these two. + * + * 1 << stripe_sz_ops.min = max sectors per strip + * + * Note that older firmwares ( < FW ver 30) didn't report information + * to calculate max_sectors_1. So the number ended up as zero always. + */ + tmp_sectors = 0; + if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { + + max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * + le16_to_cpu(ctrl_info->max_strips_per_io); + max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); + + tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); + + /*Check whether controller is iMR or MR */ + if (ctrl_info->memory_size) { + instance->is_imr = 0; + dev_info(&instance->pdev->dev, "Controller type: MR," + "Memory size is: %dMB\n", + le16_to_cpu(ctrl_info->memory_size)); + } else { + instance->is_imr = 1; + dev_info(&instance->pdev->dev, + "Controller type: iMR\n"); + } + /* OnOffProperties are converted into CPU arch*/ + le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); + instance->disableOnlineCtrlReset = + ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; + /* adapterOperations2 are converted into CPU arch*/ + le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); + instance->mpio = ctrl_info->adapterOperations2.mpio; + instance->UnevenSpanSupport = + ctrl_info->adapterOperations2.supportUnevenSpans; + if (instance->UnevenSpanSupport) { + struct fusion_context *fusion = instance->ctrl_context; + dev_info(&instance->pdev->dev, "FW supports: " + "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport); + if (MR_ValidateMapInfo(instance)) + fusion->fast_path_io = 1; + else + fusion->fast_path_io = 0; + + } + if (ctrl_info->host_interface.SRIOV) { + if (!ctrl_info->adapterOperations2.activePassive) + instance->PlasmaFW111 = 1; + + if (!instance->PlasmaFW111) + instance->requestorId = + ctrl_info->iov.requestorId; + else { + iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET); + instance->requestorId = iovPtr->requestorId; + } + printk(KERN_WARNING "megaraid_sas: I am VF " + "requestorId %d\n", instance->requestorId); + } + } + instance->max_sectors_per_req = instance->max_num_sge * + PAGE_SIZE / 512; + if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) + instance->max_sectors_per_req = tmp_sectors; + + kfree(ctrl_info); + + /* Check for valid throttlequeuedepth module parameter */ + if (instance->is_imr) { + if (throttlequeuedepth > (instance->max_fw_cmds - + MEGASAS_SKINNY_INT_CMDS)) + instance->throttlequeuedepth = + MEGASAS_THROTTLE_QUEUE_DEPTH; + else + instance->throttlequeuedepth = throttlequeuedepth; + } else { + if (throttlequeuedepth > (instance->max_fw_cmds - + MEGASAS_INT_CMDS)) + instance->throttlequeuedepth = + MEGASAS_THROTTLE_QUEUE_DEPTH; + else + instance->throttlequeuedepth = throttlequeuedepth; + } + + /* + * Setup tasklet for cmd completion + */ + + tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, + (unsigned long)instance); + + /* Launch SR-IOV heartbeat timer */ + if (instance->requestorId) { + if (!megasas_sriov_start_heartbeat(instance, 1)) + megasas_start_timer(instance, + &instance->sriov_heartbeat_timer, + megasas_sriov_heartbeat_handler, + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); + else + instance->skip_heartbeat_timer_del = 1; + } + + return 0; + +fail_init_adapter: +fail_ready_state: + iounmap(instance->reg_set); + + fail_ioremap: + pci_release_selected_regions(instance->pdev, instance->bar); + + return -EINVAL; +} + +/** + * megasas_release_mfi - Reverses the FW initialization + * @intance: Adapter soft state + */ +static void megasas_release_mfi(struct megasas_instance *instance) +{ + u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); + + if (instance->reply_queue) + pci_free_consistent(instance->pdev, reply_q_sz, + instance->reply_queue, instance->reply_queue_h); + + megasas_free_cmds(instance); + + iounmap(instance->reg_set); + + pci_release_selected_regions(instance->pdev, instance->bar); +} + +/** + * megasas_get_seq_num - Gets latest event sequence numbers + * @instance: Adapter soft state + * @eli: FW event log sequence numbers information + * + * FW maintains a log of all events in a non-volatile area. Upper layers would + * usually find out the latest sequence number of the events, the seq number at + * the boot etc. They would "read" all the events below the latest seq number + * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq + * number), they would subsribe to AEN (asynchronous event notification) and + * wait for the events to happen. + */ +static int +megasas_get_seq_num(struct megasas_instance *instance, + struct megasas_evt_log_info *eli) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct megasas_evt_log_info *el_info; + dma_addr_t el_info_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + el_info = pci_alloc_consistent(instance->pdev, + sizeof(struct megasas_evt_log_info), + &el_info_h); + + if (!el_info) { + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(el_info, 0, sizeof(*el_info)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); + + if (megasas_issue_blocked_cmd(instance, cmd, 30)) + dev_err(&instance->pdev->dev, "Command timedout" + "from %s\n", __func__); + else { + /* + * Copy the data back into callers buffer + */ + eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num); + eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num); + eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num); + eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num); + eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num); + } + + pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), + el_info, el_info_h); + + megasas_return_cmd(instance, cmd); + + return 0; +} + +/** + * megasas_register_aen - Registers for asynchronous event notification + * @instance: Adapter soft state + * @seq_num: The starting sequence number + * @class_locale: Class of the event + * + * This function subscribes for AEN for events beyond the @seq_num. It requests + * to be notified if and only if the event is of type @class_locale + */ +static int +megasas_register_aen(struct megasas_instance *instance, u32 seq_num, + u32 class_locale_word) +{ + int ret_val; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + union megasas_evt_class_locale curr_aen; + union megasas_evt_class_locale prev_aen; + + /* + * If there an AEN pending already (aen_cmd), check if the + * class_locale of that pending AEN is inclusive of the new + * AEN request we currently have. If it is, then we don't have + * to do anything. In other words, whichever events the current + * AEN request is subscribing to, have already been subscribed + * to. + * + * If the old_cmd is _not_ inclusive, then we have to abort + * that command, form a class_locale that is superset of both + * old and current and re-issue to the FW + */ + + curr_aen.word = class_locale_word; + + if (instance->aen_cmd) { + + prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; + prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale); + + /* + * A class whose enum value is smaller is inclusive of all + * higher values. If a PROGRESS (= -1) was previously + * registered, then a new registration requests for higher + * classes need not be sent to FW. They are automatically + * included. + * + * Locale numbers don't have such hierarchy. They are bitmap + * values + */ + if ((prev_aen.members.class <= curr_aen.members.class) && + !((prev_aen.members.locale & curr_aen.members.locale) ^ + curr_aen.members.locale)) { + /* + * Previously issued event registration includes + * current request. Nothing to do. + */ + return 0; + } else { + curr_aen.members.locale |= prev_aen.members.locale; + + if (prev_aen.members.class < curr_aen.members.class) + curr_aen.members.class = prev_aen.members.class; + + instance->aen_cmd->abort_aen = 1; + ret_val = megasas_issue_blocked_abort_cmd(instance, + instance-> + aen_cmd, 30); + + if (ret_val) { + printk(KERN_DEBUG "megasas: Failed to abort " + "previous AEN command\n"); + return ret_val; + } + } + } + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return -ENOMEM; + + dcmd = &cmd->frame->dcmd; + + memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); + + /* + * Prepare DCMD for aen registration + */ + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); + dcmd->mbox.w[0] = cpu_to_le32(seq_num); + instance->last_seq_num = seq_num; + dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); + + if (instance->aen_cmd != NULL) { + megasas_return_cmd(instance, cmd); + return 0; + } + + /* + * Store reference to the cmd used to register for AEN. When an + * application wants us to register for AEN, we have to abort this + * cmd and re-register with a new EVENT LOCALE supplied by that app + */ + instance->aen_cmd = cmd; + + /* + * Issue the aen registration frame + */ + instance->instancet->issue_dcmd(instance, cmd); + + return 0; +} + +/** + * megasas_start_aen - Subscribes to AEN during driver load time + * @instance: Adapter soft state + */ +static int megasas_start_aen(struct megasas_instance *instance) +{ + struct megasas_evt_log_info eli; + union megasas_evt_class_locale class_locale; + + /* + * Get the latest sequence number from FW + */ + memset(&eli, 0, sizeof(eli)); + + if (megasas_get_seq_num(instance, &eli)) + return -1; + + /* + * Register AEN with FW for latest sequence number plus 1 + */ + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + + return megasas_register_aen(instance, + eli.newest_seq_num + 1, + class_locale.word); +} + +/** + * megasas_io_attach - Attaches this driver to SCSI mid-layer + * @instance: Adapter soft state + */ +static int megasas_io_attach(struct megasas_instance *instance) +{ + struct Scsi_Host *host = instance->host; + + /* + * Export parameters required by SCSI mid-layer + */ + host->irq = instance->pdev->irq; + host->unique_id = instance->unique_id; + if (instance->is_imr) { + host->can_queue = + instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; + } else + host->can_queue = + instance->max_fw_cmds - MEGASAS_INT_CMDS; + host->this_id = instance->init_id; + host->sg_tablesize = instance->max_num_sge; + + if (instance->fw_support_ieee) + instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; + + /* + * Check if the module parameter value for max_sectors can be used + */ + if (max_sectors && max_sectors < instance->max_sectors_per_req) + instance->max_sectors_per_req = max_sectors; + else { + if (max_sectors) { + if (((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS1078GEN2) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0079GEN2)) && + (max_sectors <= MEGASAS_MAX_SECTORS)) { + instance->max_sectors_per_req = max_sectors; + } else { + printk(KERN_INFO "megasas: max_sectors should be > 0" + "and <= %d (or < 1MB for GEN2 controller)\n", + instance->max_sectors_per_req); + } + } + } + + host->max_sectors = instance->max_sectors_per_req; + host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; + host->max_channel = MEGASAS_MAX_CHANNELS - 1; + host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; + host->max_lun = MEGASAS_MAX_LUN; + host->max_cmd_len = 16; + + /* Fusion only supports host reset */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + host->hostt->eh_device_reset_handler = NULL; + host->hostt->eh_bus_reset_handler = NULL; + } + + /* + * Notify the mid-layer about the new controller + */ + if (scsi_add_host(host, &instance->pdev->dev)) { + printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); + return -ENODEV; + } + + /* + * Trigger SCSI to scan our drives + */ + scsi_scan_host(host); + return 0; +} + +static int +megasas_set_dma_mask(struct pci_dev *pdev) +{ + /* + * All our contollers are capable of performing 64-bit DMA + */ + if (IS_DMA64) { + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { + + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) + goto fail_set_dma_mask; + } + } else { + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) + goto fail_set_dma_mask; + } + /* + * Ensure that all data structures are allocated in 32-bit + * memory. + */ + if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { + /* Try 32bit DMA mask and 32 bit Consistent dma mask */ + if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) + && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) + dev_info(&pdev->dev, "set 32bit DMA mask" + "and 32 bit consistent mask\n"); + else + goto fail_set_dma_mask; + } + + return 0; + +fail_set_dma_mask: + return 1; +} + +/** + * megasas_probe_one - PCI hotplug entry point + * @pdev: PCI device structure + * @id: PCI ids of supported hotplugged adapter + */ +static int megasas_probe_one(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + int rval, pos, i, j, cpu; + struct Scsi_Host *host; + struct megasas_instance *instance; + u16 control = 0; + + /* Reset MSI-X in the kdump kernel */ + if (reset_devices) { + pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); + if (pos) { + pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, + &control); + if (control & PCI_MSIX_FLAGS_ENABLE) { + dev_info(&pdev->dev, "resetting MSI-X\n"); + pci_write_config_word(pdev, + pos + PCI_MSIX_FLAGS, + control & + ~PCI_MSIX_FLAGS_ENABLE); + } + } + } + + /* + * Announce PCI information + */ + printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", + pdev->vendor, pdev->device, pdev->subsystem_vendor, + pdev->subsystem_device); + + printk("bus %d:slot %d:func %d\n", + pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); + + /* + * PCI prepping: enable device set bus mastering and dma mask + */ + rval = pci_enable_device_mem(pdev); + + if (rval) { + return rval; + } + + pci_set_master(pdev); + + if (megasas_set_dma_mask(pdev)) + goto fail_set_dma_mask; + + host = scsi_host_alloc(&megasas_template, + sizeof(struct megasas_instance)); + + if (!host) { + printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); + goto fail_alloc_instance; + } + + instance = (struct megasas_instance *)host->hostdata; + memset(instance, 0, sizeof(*instance)); + atomic_set( &instance->fw_reset_no_pci_access, 0 ); + instance->pdev = pdev; + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_PLASMA: + case PCI_DEVICE_ID_LSI_INVADER: + case PCI_DEVICE_ID_LSI_FURY: + { + struct fusion_context *fusion; + + instance->ctrl_context = + kzalloc(sizeof(struct fusion_context), GFP_KERNEL); + if (!instance->ctrl_context) { + printk(KERN_DEBUG "megasas: Failed to allocate " + "memory for Fusion context info\n"); + goto fail_alloc_dma_buf; + } + fusion = instance->ctrl_context; + INIT_LIST_HEAD(&fusion->cmd_pool); + spin_lock_init(&fusion->cmd_pool_lock); + } + break; + default: /* For all other supported controllers */ + + instance->producer = + pci_alloc_consistent(pdev, sizeof(u32), + &instance->producer_h); + instance->consumer = + pci_alloc_consistent(pdev, sizeof(u32), + &instance->consumer_h); + + if (!instance->producer || !instance->consumer) { + printk(KERN_DEBUG "megasas: Failed to allocate" + "memory for producer, consumer\n"); + goto fail_alloc_dma_buf; + } + + *instance->producer = 0; + *instance->consumer = 0; + break; + } + + megasas_poll_wait_aen = 0; + instance->flag_ieee = 0; + instance->ev = NULL; + instance->issuepend_done = 1; + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + instance->is_imr = 0; + megasas_poll_wait_aen = 0; + + instance->evt_detail = pci_alloc_consistent(pdev, + sizeof(struct + megasas_evt_detail), + &instance->evt_detail_h); + + if (!instance->evt_detail) { + printk(KERN_DEBUG "megasas: Failed to allocate memory for " + "event detail structure\n"); + goto fail_alloc_dma_buf; + } + + /* + * Initialize locks and queues + */ + INIT_LIST_HEAD(&instance->cmd_pool); + INIT_LIST_HEAD(&instance->internal_reset_pending_q); + + atomic_set(&instance->fw_outstanding,0); + + init_waitqueue_head(&instance->int_cmd_wait_q); + init_waitqueue_head(&instance->abort_cmd_wait_q); + + spin_lock_init(&instance->cmd_pool_lock); + spin_lock_init(&instance->hba_lock); + spin_lock_init(&instance->completion_lock); + + mutex_init(&instance->aen_mutex); + mutex_init(&instance->reset_mutex); + + /* + * Initialize PCI related and misc parameters + */ + instance->host = host; + instance->unique_id = pdev->bus->number << 8 | pdev->devfn; + instance->init_id = MEGASAS_DEFAULT_INIT_ID; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + instance->flag_ieee = 1; + sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); + } else + sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); + + megasas_dbg_lvl = 0; + instance->flag = 0; + instance->unload = 1; + instance->last_time = 0; + instance->disableOnlineCtrlReset = 1; + instance->UnevenSpanSupport = 0; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); + else + INIT_WORK(&instance->work_init, process_fw_state_change_wq); + + /* + * Initialize MFI Firmware + */ + if (megasas_init_fw(instance)) + goto fail_init_mfi; + + if (instance->requestorId) { + if (instance->PlasmaFW111) { + instance->vf_affiliation_111 = + pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), + &instance->vf_affiliation_111_h); + if (!instance->vf_affiliation_111) + printk(KERN_WARNING "megasas: Can't allocate " + "memory for VF affiliation buffer\n"); + } else { + instance->vf_affiliation = + pci_alloc_consistent(pdev, + (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION), + &instance->vf_affiliation_h); + if (!instance->vf_affiliation) + printk(KERN_WARNING "megasas: Can't allocate " + "memory for VF affiliation buffer\n"); + } + } + +retry_irq_register: + /* + * Register IRQ + */ + if (instance->msix_vectors) { + cpu = cpumask_first(cpu_online_mask); + for (i = 0; i < instance->msix_vectors; i++) { + instance->irq_context[i].instance = instance; + instance->irq_context[i].MSIxIndex = i; + if (request_irq(instance->msixentry[i].vector, + instance->instancet->service_isr, 0, + "megasas", + &instance->irq_context[i])) { + printk(KERN_DEBUG "megasas: Failed to " + "register IRQ for vector %d.\n", i); + for (j = 0; j < i; j++) { + irq_set_affinity_hint( + instance->msixentry[j].vector, NULL); + free_irq( + instance->msixentry[j].vector, + &instance->irq_context[j]); + } + /* Retry irq register for IO_APIC */ + instance->msix_vectors = 0; + goto retry_irq_register; + } + if (irq_set_affinity_hint(instance->msixentry[i].vector, + get_cpu_mask(cpu))) + dev_err(&instance->pdev->dev, "Error setting" + "affinity hint for cpu %d\n", cpu); + cpu = cpumask_next(cpu, cpu_online_mask); + } + } else { + instance->irq_context[0].instance = instance; + instance->irq_context[0].MSIxIndex = 0; + if (request_irq(pdev->irq, instance->instancet->service_isr, + IRQF_SHARED, "megasas", + &instance->irq_context[0])) { + printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); + goto fail_irq; + } + } + + instance->instancet->enable_intr(instance); + + /* + * Store instance in PCI softstate + */ + pci_set_drvdata(pdev, instance); + + /* + * Add this controller to megasas_mgmt_info structure so that it + * can be exported to management applications + */ + megasas_mgmt_info.count++; + megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; + megasas_mgmt_info.max_index++; + + /* + * Register with SCSI mid-layer + */ + if (megasas_io_attach(instance)) + goto fail_io_attach; + + instance->unload = 0; + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + if (megasas_start_aen(instance)) { + printk(KERN_DEBUG "megasas: start aen failed\n"); + goto fail_start_aen; + } + + return 0; + + fail_start_aen: + fail_io_attach: + megasas_mgmt_info.count--; + megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; + megasas_mgmt_info.max_index--; + + instance->instancet->disable_intr(instance); + if (instance->msix_vectors) + for (i = 0; i < instance->msix_vectors; i++) { + irq_set_affinity_hint( + instance->msixentry[i].vector, NULL); + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + } + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); +fail_irq: + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + megasas_release_fusion(instance); + else + megasas_release_mfi(instance); + fail_init_mfi: + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); + fail_alloc_dma_buf: + if (instance->evt_detail) + pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), + instance->evt_detail, + instance->evt_detail_h); + + if (instance->producer) + pci_free_consistent(pdev, sizeof(u32), instance->producer, + instance->producer_h); + if (instance->consumer) + pci_free_consistent(pdev, sizeof(u32), instance->consumer, + instance->consumer_h); + scsi_host_put(host); + + fail_alloc_instance: + fail_set_dma_mask: + pci_disable_device(pdev); + + return -ENODEV; +} + +/** + * megasas_flush_cache - Requests FW to flush all its caches + * @instance: Adapter soft state + */ +static void megasas_flush_cache(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) + return; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return; + + dcmd = &cmd->frame->dcmd; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 0; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = 0; + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); + dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; + + if (megasas_issue_blocked_cmd(instance, cmd, 30)) + dev_err(&instance->pdev->dev, "Command timedout" + " from %s\n", __func__); + + megasas_return_cmd(instance, cmd); + + return; +} + +/** + * megasas_shutdown_controller - Instructs FW to shutdown the controller + * @instance: Adapter soft state + * @opcode: Shutdown/Hibernate + */ +static void megasas_shutdown_controller(struct megasas_instance *instance, + u32 opcode) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) + return; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return; + + if (instance->aen_cmd) + megasas_issue_blocked_abort_cmd(instance, + instance->aen_cmd, 30); + if (instance->map_update_cmd) + megasas_issue_blocked_abort_cmd(instance, + instance->map_update_cmd, 30); + dcmd = &cmd->frame->dcmd; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 0; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = 0; + dcmd->opcode = cpu_to_le32(opcode); + + if (megasas_issue_blocked_cmd(instance, cmd, 30)) + dev_err(&instance->pdev->dev, "Command timedout" + "from %s\n", __func__); + + megasas_return_cmd(instance, cmd); + + return; +} + +#ifdef CONFIG_PM +/** + * megasas_suspend - driver suspend entry point + * @pdev: PCI device structure + * @state: PCI power state to suspend routine + */ +static int +megasas_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct Scsi_Host *host; + struct megasas_instance *instance; + int i; + + instance = pci_get_drvdata(pdev); + host = instance->host; + instance->unload = 1; + + /* Shutdown SR-IOV heartbeat timer */ + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); + + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); + + /* cancel the delayed work if this work still in queue */ + if (instance->ev != NULL) { + struct megasas_aen_event *ev = instance->ev; + cancel_delayed_work_sync(&ev->hotplug_work); + instance->ev = NULL; + } + + tasklet_kill(&instance->isr_tasklet); + + pci_set_drvdata(instance->pdev, instance); + instance->instancet->disable_intr(instance); + + if (instance->msix_vectors) + for (i = 0; i < instance->msix_vectors; i++) { + irq_set_affinity_hint( + instance->msixentry[i].vector, NULL); + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + } + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); + + pci_save_state(pdev); + pci_disable_device(pdev); + + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +/** + * megasas_resume- driver resume entry point + * @pdev: PCI device structure + */ +static int +megasas_resume(struct pci_dev *pdev) +{ + int rval, i, j, cpu; + struct Scsi_Host *host; + struct megasas_instance *instance; + + instance = pci_get_drvdata(pdev); + host = instance->host; + pci_set_power_state(pdev, PCI_D0); + pci_enable_wake(pdev, PCI_D0, 0); + pci_restore_state(pdev); + + /* + * PCI prepping: enable device set bus mastering and dma mask + */ + rval = pci_enable_device_mem(pdev); + + if (rval) { + printk(KERN_ERR "megasas: Enable device failed\n"); + return rval; + } + + pci_set_master(pdev); + + if (megasas_set_dma_mask(pdev)) + goto fail_set_dma_mask; + + /* + * Initialize MFI Firmware + */ + + atomic_set(&instance->fw_outstanding, 0); + + /* + * We expect the FW state to be READY + */ + if (megasas_transition_to_ready(instance, 0)) + goto fail_ready_state; + + /* Now re-enable MSI-X */ + if (instance->msix_vectors) + pci_enable_msix(instance->pdev, instance->msixentry, + instance->msix_vectors); + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_PLASMA: + case PCI_DEVICE_ID_LSI_INVADER: + case PCI_DEVICE_ID_LSI_FURY: + { + megasas_reset_reply_desc(instance); + if (megasas_ioc_init_fusion(instance)) { + megasas_free_cmds(instance); + megasas_free_cmds_fusion(instance); + goto fail_init_mfi; + } + if (!megasas_get_map_info(instance)) + megasas_sync_map_info(instance); + } + break; + default: + *instance->producer = 0; + *instance->consumer = 0; + if (megasas_issue_init_mfi(instance)) + goto fail_init_mfi; + break; + } + + tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, + (unsigned long)instance); + + /* + * Register IRQ + */ + if (instance->msix_vectors) { + cpu = cpumask_first(cpu_online_mask); + for (i = 0 ; i < instance->msix_vectors; i++) { + instance->irq_context[i].instance = instance; + instance->irq_context[i].MSIxIndex = i; + if (request_irq(instance->msixentry[i].vector, + instance->instancet->service_isr, 0, + "megasas", + &instance->irq_context[i])) { + printk(KERN_DEBUG "megasas: Failed to " + "register IRQ for vector %d.\n", i); + for (j = 0; j < i; j++) { + irq_set_affinity_hint( + instance->msixentry[j].vector, NULL); + free_irq( + instance->msixentry[j].vector, + &instance->irq_context[j]); + } + goto fail_irq; + } + + if (irq_set_affinity_hint(instance->msixentry[i].vector, + get_cpu_mask(cpu))) + dev_err(&instance->pdev->dev, "Error setting" + "affinity hint for cpu %d\n", cpu); + cpu = cpumask_next(cpu, cpu_online_mask); + } + } else { + instance->irq_context[0].instance = instance; + instance->irq_context[0].MSIxIndex = 0; + if (request_irq(pdev->irq, instance->instancet->service_isr, + IRQF_SHARED, "megasas", + &instance->irq_context[0])) { + printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); + goto fail_irq; + } + } + + /* Re-launch SR-IOV heartbeat timer */ + if (instance->requestorId) { + if (!megasas_sriov_start_heartbeat(instance, 0)) + megasas_start_timer(instance, + &instance->sriov_heartbeat_timer, + megasas_sriov_heartbeat_handler, + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); + else + instance->skip_heartbeat_timer_del = 1; + } + + instance->instancet->enable_intr(instance); + instance->unload = 0; + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + if (megasas_start_aen(instance)) + printk(KERN_ERR "megasas: Start AEN failed\n"); + + return 0; + +fail_irq: +fail_init_mfi: + if (instance->evt_detail) + pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), + instance->evt_detail, + instance->evt_detail_h); + + if (instance->producer) + pci_free_consistent(pdev, sizeof(u32), instance->producer, + instance->producer_h); + if (instance->consumer) + pci_free_consistent(pdev, sizeof(u32), instance->consumer, + instance->consumer_h); + scsi_host_put(host); + +fail_set_dma_mask: +fail_ready_state: + + pci_disable_device(pdev); + + return -ENODEV; +} +#else +#define megasas_suspend NULL +#define megasas_resume NULL +#endif + +/** + * megasas_detach_one - PCI hot"un"plug entry point + * @pdev: PCI device structure + */ +static void megasas_detach_one(struct pci_dev *pdev) +{ + int i; + struct Scsi_Host *host; + struct megasas_instance *instance; + struct fusion_context *fusion; + + instance = pci_get_drvdata(pdev); + instance->unload = 1; + host = instance->host; + fusion = instance->ctrl_context; + + /* Shutdown SR-IOV heartbeat timer */ + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); + + scsi_remove_host(instance->host); + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); + + /* cancel the delayed work if this work still in queue*/ + if (instance->ev != NULL) { + struct megasas_aen_event *ev = instance->ev; + cancel_delayed_work_sync(&ev->hotplug_work); + instance->ev = NULL; + } + + /* cancel all wait events */ + wake_up_all(&instance->int_cmd_wait_q); + + tasklet_kill(&instance->isr_tasklet); + + /* + * Take the instance off the instance array. Note that we will not + * decrement the max_index. We let this array be sparse array + */ + for (i = 0; i < megasas_mgmt_info.max_index; i++) { + if (megasas_mgmt_info.instance[i] == instance) { + megasas_mgmt_info.count--; + megasas_mgmt_info.instance[i] = NULL; + + break; + } + } + + instance->instancet->disable_intr(instance); + + if (instance->msix_vectors) + for (i = 0; i < instance->msix_vectors; i++) { + irq_set_affinity_hint( + instance->msixentry[i].vector, NULL); + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + } + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_PLASMA: + case PCI_DEVICE_ID_LSI_INVADER: + case PCI_DEVICE_ID_LSI_FURY: + megasas_release_fusion(instance); + for (i = 0; i < 2 ; i++) + if (fusion->ld_map[i]) + dma_free_coherent(&instance->pdev->dev, + fusion->map_sz, + fusion->ld_map[i], + fusion-> + ld_map_phys[i]); + kfree(instance->ctrl_context); + break; + default: + megasas_release_mfi(instance); + pci_free_consistent(pdev, sizeof(u32), + instance->producer, + instance->producer_h); + pci_free_consistent(pdev, sizeof(u32), + instance->consumer, + instance->consumer_h); + break; + } + + if (instance->evt_detail) + pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), + instance->evt_detail, instance->evt_detail_h); + + if (instance->vf_affiliation) + pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION), + instance->vf_affiliation, + instance->vf_affiliation_h); + + if (instance->vf_affiliation_111) + pci_free_consistent(pdev, + sizeof(struct MR_LD_VF_AFFILIATION_111), + instance->vf_affiliation_111, + instance->vf_affiliation_111_h); + + if (instance->hb_host_mem) + pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), + instance->hb_host_mem, + instance->hb_host_mem_h); + + scsi_host_put(host); + + pci_disable_device(pdev); + + return; +} + +/** + * megasas_shutdown - Shutdown entry point + * @device: Generic device structure + */ +static void megasas_shutdown(struct pci_dev *pdev) +{ + int i; + struct megasas_instance *instance = pci_get_drvdata(pdev); + + instance->unload = 1; + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); + instance->instancet->disable_intr(instance); + if (instance->msix_vectors) + for (i = 0; i < instance->msix_vectors; i++) { + irq_set_affinity_hint( + instance->msixentry[i].vector, NULL); + free_irq(instance->msixentry[i].vector, + &instance->irq_context[i]); + } + else + free_irq(instance->pdev->irq, &instance->irq_context[0]); + if (instance->msix_vectors) + pci_disable_msix(instance->pdev); +} + +/** + * megasas_mgmt_open - char node "open" entry point + */ +static int megasas_mgmt_open(struct inode *inode, struct file *filep) +{ + /* + * Allow only those users with admin rights + */ + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + return 0; +} + +/** + * megasas_mgmt_fasync - Async notifier registration from applications + * + * This function adds the calling process to a driver global queue. When an + * event occurs, SIGIO will be sent to all processes in this queue. + */ +static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) +{ + int rc; + + mutex_lock(&megasas_async_queue_mutex); + + rc = fasync_helper(fd, filep, mode, &megasas_async_queue); + + mutex_unlock(&megasas_async_queue_mutex); + + if (rc >= 0) { + /* For sanity check when we get ioctl */ + filep->private_data = filep; + return 0; + } + + printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); + + return rc; +} + +/** + * megasas_mgmt_poll - char node "poll" entry point + * */ +static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) +{ + unsigned int mask; + unsigned long flags; + poll_wait(file, &megasas_poll_wait, wait); + spin_lock_irqsave(&poll_aen_lock, flags); + if (megasas_poll_wait_aen) + mask = (POLLIN | POLLRDNORM); + else + mask = 0; + spin_unlock_irqrestore(&poll_aen_lock, flags); + return mask; +} + +/** + * megasas_mgmt_fw_ioctl - Issues management ioctls to FW + * @instance: Adapter soft state + * @argp: User's ioctl packet + */ +static int +megasas_mgmt_fw_ioctl(struct megasas_instance *instance, + struct megasas_iocpacket __user * user_ioc, + struct megasas_iocpacket *ioc) +{ + struct megasas_sge32 *kern_sge32; + struct megasas_cmd *cmd; + void *kbuff_arr[MAX_IOCTL_SGE]; + dma_addr_t buf_handle = 0; + int error = 0, i; + void *sense = NULL; + dma_addr_t sense_handle; + unsigned long *sense_ptr; + + memset(kbuff_arr, 0, sizeof(kbuff_arr)); + + if (ioc->sge_count > MAX_IOCTL_SGE) { + printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", + ioc->sge_count, MAX_IOCTL_SGE); + return -EINVAL; + } + + cmd = megasas_get_cmd(instance); + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); + return -ENOMEM; + } + + /* + * User's IOCTL packet has 2 frames (maximum). Copy those two + * frames into our cmd's frames. cmd->frame's context will get + * overwritten when we copy from user's frames. So set that value + * alone separately + */ + memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); + cmd->frame->hdr.context = cpu_to_le32(cmd->index); + cmd->frame->hdr.pad_0 = 0; + cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | + MFI_FRAME_SGL64 | + MFI_FRAME_SENSE64)); + + /* + * The management interface between applications and the fw uses + * MFI frames. E.g, RAID configuration changes, LD property changes + * etc are accomplishes through different kinds of MFI frames. The + * driver needs to care only about substituting user buffers with + * kernel buffers in SGLs. The location of SGL is embedded in the + * struct iocpacket itself. + */ + kern_sge32 = (struct megasas_sge32 *) + ((unsigned long)cmd->frame + ioc->sgl_off); + + /* + * For each user buffer, create a mirror buffer and copy in + */ + for (i = 0; i < ioc->sge_count; i++) { + if (!ioc->sgl[i].iov_len) + continue; + + kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, + ioc->sgl[i].iov_len, + &buf_handle, GFP_KERNEL); + if (!kbuff_arr[i]) { + printk(KERN_DEBUG "megasas: Failed to alloc " + "kernel SGL buffer for IOCTL \n"); + error = -ENOMEM; + goto out; + } + + /* + * We don't change the dma_coherent_mask, so + * pci_alloc_consistent only returns 32bit addresses + */ + kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); + kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); + + /* + * We created a kernel buffer corresponding to the + * user buffer. Now copy in from the user buffer + */ + if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, + (u32) (ioc->sgl[i].iov_len))) { + error = -EFAULT; + goto out; + } + } + + if (ioc->sense_len) { + sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, + &sense_handle, GFP_KERNEL); + if (!sense) { + error = -ENOMEM; + goto out; + } + + sense_ptr = + (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); + *sense_ptr = cpu_to_le32(sense_handle); + } + + /* + * Set the sync_cmd flag so that the ISR knows not to complete this + * cmd to the SCSI mid-layer + */ + cmd->sync_cmd = 1; + megasas_issue_blocked_cmd(instance, cmd, 0); + cmd->sync_cmd = 0; + + /* + * copy out the kernel buffers to user buffers + */ + for (i = 0; i < ioc->sge_count; i++) { + if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], + ioc->sgl[i].iov_len)) { + error = -EFAULT; + goto out; + } + } + + /* + * copy out the sense + */ + if (ioc->sense_len) { + /* + * sense_ptr points to the location that has the user + * sense buffer address + */ + sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + + ioc->sense_off); + + if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), + sense, ioc->sense_len)) { + printk(KERN_ERR "megasas: Failed to copy out to user " + "sense data\n"); + error = -EFAULT; + goto out; + } + } + + /* + * copy the status codes returned by the fw + */ + if (copy_to_user(&user_ioc->frame.hdr.cmd_status, + &cmd->frame->hdr.cmd_status, sizeof(u8))) { + printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); + error = -EFAULT; + } + + out: + if (sense) { + dma_free_coherent(&instance->pdev->dev, ioc->sense_len, + sense, sense_handle); + } + + for (i = 0; i < ioc->sge_count; i++) { + if (kbuff_arr[i]) + dma_free_coherent(&instance->pdev->dev, + le32_to_cpu(kern_sge32[i].length), + kbuff_arr[i], + le32_to_cpu(kern_sge32[i].phys_addr)); + } + + megasas_return_cmd(instance, cmd); + return error; +} + +static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) +{ + struct megasas_iocpacket __user *user_ioc = + (struct megasas_iocpacket __user *)arg; + struct megasas_iocpacket *ioc; + struct megasas_instance *instance; + int error; + int i; + unsigned long flags; + u32 wait_time = MEGASAS_RESET_WAIT_TIME; + + ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); + if (!ioc) + return -ENOMEM; + + if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { + error = -EFAULT; + goto out_kfree_ioc; + } + + instance = megasas_lookup_instance(ioc->host_no); + if (!instance) { + error = -ENODEV; + goto out_kfree_ioc; + } + + /* Adjust ioctl wait time for VF mode */ + if (instance->requestorId) + wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; + + /* Block ioctls in VF mode */ + if (instance->requestorId && !allow_vf_ioctls) { + error = -ENODEV; + goto out_kfree_ioc; + } + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + printk(KERN_ERR "Controller in crit error\n"); + error = -ENODEV; + goto out_kfree_ioc; + } + + if (instance->unload == 1) { + error = -ENODEV; + goto out_kfree_ioc; + } + + /* + * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds + */ + if (down_interruptible(&instance->ioctl_sem)) { + error = -ERESTARTSYS; + goto out_kfree_ioc; + } + + for (i = 0; i < wait_time; i++) { + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + break; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: waiting" + "for controller reset to finish\n"); + } + + msleep(1000); + } + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + + printk(KERN_ERR "megaraid_sas: timed out while" + "waiting for HBA to recover\n"); + error = -ENODEV; + goto out_up; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); + out_up: + up(&instance->ioctl_sem); + + out_kfree_ioc: + kfree(ioc); + return error; +} + +static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) +{ + struct megasas_instance *instance; + struct megasas_aen aen; + int error; + int i; + unsigned long flags; + u32 wait_time = MEGASAS_RESET_WAIT_TIME; + + if (file->private_data != file) { + printk(KERN_DEBUG "megasas: fasync_helper was not " + "called first\n"); + return -EINVAL; + } + + if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) + return -EFAULT; + + instance = megasas_lookup_instance(aen.host_no); + + if (!instance) + return -ENODEV; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + return -ENODEV; + } + + if (instance->unload == 1) { + return -ENODEV; + } + + for (i = 0; i < wait_time; i++) { + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, + flags); + break; + } + + spin_unlock_irqrestore(&instance->hba_lock, flags); + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: waiting for" + "controller reset to finish\n"); + } + + msleep(1000); + } + + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + printk(KERN_ERR "megaraid_sas: timed out while waiting" + "for HBA to recover.\n"); + return -ENODEV; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + mutex_lock(&instance->aen_mutex); + error = megasas_register_aen(instance, aen.seq_num, + aen.class_locale_word); + mutex_unlock(&instance->aen_mutex); + return error; +} + +/** + * megasas_mgmt_ioctl - char node ioctl entry point + */ +static long +megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case MEGASAS_IOC_FIRMWARE: + return megasas_mgmt_ioctl_fw(file, arg); + + case MEGASAS_IOC_GET_AEN: + return megasas_mgmt_ioctl_aen(file, arg); + } + + return -ENOTTY; +} + +#ifdef CONFIG_COMPAT +static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) +{ + struct compat_megasas_iocpacket __user *cioc = + (struct compat_megasas_iocpacket __user *)arg; + struct megasas_iocpacket __user *ioc = + compat_alloc_user_space(sizeof(struct megasas_iocpacket)); + int i; + int error = 0; + compat_uptr_t ptr; + + if (clear_user(ioc, sizeof(*ioc))) + return -EFAULT; + + if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || + copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || + copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || + copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || + copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || + copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) + return -EFAULT; + + /* + * The sense_ptr is used in megasas_mgmt_fw_ioctl only when + * sense_len is not null, so prepare the 64bit value under + * the same condition. + */ + if (ioc->sense_len) { + void __user **sense_ioc_ptr = + (void __user **)(ioc->frame.raw + ioc->sense_off); + compat_uptr_t *sense_cioc_ptr = + (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); + if (get_user(ptr, sense_cioc_ptr) || + put_user(compat_ptr(ptr), sense_ioc_ptr)) + return -EFAULT; + } + + for (i = 0; i < MAX_IOCTL_SGE; i++) { + if (get_user(ptr, &cioc->sgl[i].iov_base) || + put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || + copy_in_user(&ioc->sgl[i].iov_len, + &cioc->sgl[i].iov_len, sizeof(compat_size_t))) + return -EFAULT; + } + + error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); + + if (copy_in_user(&cioc->frame.hdr.cmd_status, + &ioc->frame.hdr.cmd_status, sizeof(u8))) { + printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); + return -EFAULT; + } + return error; +} + +static long +megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + switch (cmd) { + case MEGASAS_IOC_FIRMWARE32: + return megasas_mgmt_compat_ioctl_fw(file, arg); + case MEGASAS_IOC_GET_AEN: + return megasas_mgmt_ioctl_aen(file, arg); + } + + return -ENOTTY; +} +#endif + +/* + * File operations structure for management interface + */ +static const struct file_operations megasas_mgmt_fops = { + .owner = THIS_MODULE, + .open = megasas_mgmt_open, + .fasync = megasas_mgmt_fasync, + .unlocked_ioctl = megasas_mgmt_ioctl, + .poll = megasas_mgmt_poll, +#ifdef CONFIG_COMPAT + .compat_ioctl = megasas_mgmt_compat_ioctl, +#endif + .llseek = noop_llseek, +}; + +/* + * PCI hotplug support registration structure + */ +static struct pci_driver megasas_pci_driver = { + + .name = "megaraid_sas", + .id_table = megasas_pci_table, + .probe = megasas_probe_one, + .remove = megasas_detach_one, + .suspend = megasas_suspend, + .resume = megasas_resume, + .shutdown = megasas_shutdown, +}; + +/* + * Sysfs driver attributes + */ +static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) +{ + return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", + MEGASAS_VERSION); +} + +static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); + +static ssize_t +megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) +{ + return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", + MEGASAS_RELDATE); +} + +static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, + NULL); + +static ssize_t +megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_poll_for_event); +} + +static DRIVER_ATTR(support_poll_for_event, S_IRUGO, + megasas_sysfs_show_support_poll_for_event, NULL); + + static ssize_t +megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_device_change); +} + +static DRIVER_ATTR(support_device_change, S_IRUGO, + megasas_sysfs_show_support_device_change, NULL); + +static ssize_t +megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", megasas_dbg_lvl); +} + +static ssize_t +megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) +{ + int retval = count; + if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ + printk(KERN_ERR "megasas: could not set dbg_lvl\n"); + retval = -EINVAL; + } + return retval; +} + +static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, + megasas_sysfs_set_dbg_lvl); + +static void +megasas_aen_polling(struct work_struct *work) +{ + struct megasas_aen_event *ev = + container_of(work, struct megasas_aen_event, hotplug_work.work); + struct megasas_instance *instance = ev->instance; + union megasas_evt_class_locale class_locale; + struct Scsi_Host *host; + struct scsi_device *sdev1; + u16 pd_index = 0; + u16 ld_index = 0; + int i, j, doscan = 0; + u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; + int error; + + if (!instance) { + printk(KERN_ERR "invalid instance!\n"); + kfree(ev); + return; + } + + /* Adjust event workqueue thread wait time for VF mode */ + if (instance->requestorId) + wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; + + /* Don't run the event workqueue thread if OCR is running */ + for (i = 0; i < wait_time; i++) { + if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) + break; + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: %s waiting for " + "controller reset to finish for scsi%d\n", + __func__, instance->host->host_no); + } + msleep(1000); + } + + instance->ev = NULL; + host = instance->host; + if (instance->evt_detail) { + + switch (le32_to_cpu(instance->evt_detail->code)) { + case MR_EVT_PD_INSERTED: + if (megasas_get_pd_list(instance) == 0) { + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + + pd_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = + scsi_device_lookup(host, i, j, 0); + + if (instance->pd_list[pd_index].driveState + == MR_PD_STATE_SYSTEM) { + if (!sdev1) { + scsi_add_device(host, i, j, 0); + } + + if (sdev1) + scsi_device_put(sdev1); + } + } + } + } + doscan = 0; + break; + + case MR_EVT_PD_REMOVED: + if (megasas_get_pd_list(instance) == 0) { + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + + pd_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = + scsi_device_lookup(host, i, j, 0); + + if (instance->pd_list[pd_index].driveState + == MR_PD_STATE_SYSTEM) { + if (sdev1) { + scsi_device_put(sdev1); + } + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + } + doscan = 0; + break; + + case MR_EVT_LD_OFFLINE: + case MR_EVT_CFG_CLEARED: + case MR_EVT_LD_DELETED: + if (!instance->requestorId || + (instance->requestorId && + megasas_get_ld_vf_affiliation(instance, 0))) { + if (megasas_ld_list_query(instance, + MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) + megasas_get_ld_list(instance); + for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + + ld_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); + + if (instance->ld_ids[ld_index] + != 0xff) { + if (sdev1) + scsi_device_put(sdev1); + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + doscan = 0; + } + break; + case MR_EVT_LD_CREATED: + if (!instance->requestorId || + (instance->requestorId && + megasas_get_ld_vf_affiliation(instance, 0))) { + if (megasas_ld_list_query(instance, + MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) + megasas_get_ld_list(instance); + for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { + for (j = 0; + j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + ld_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); + + if (instance->ld_ids[ld_index] + != 0xff) { + if (!sdev1) + scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); + } + if (sdev1) + scsi_device_put(sdev1); + } + } + doscan = 0; + } + break; + case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: + case MR_EVT_FOREIGN_CFG_IMPORTED: + case MR_EVT_LD_STATE_CHANGE: + doscan = 1; + break; + default: + doscan = 0; + break; + } + } else { + printk(KERN_ERR "invalid evt_detail!\n"); + kfree(ev); + return; + } + + if (doscan) { + printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n", + instance->host->host_no); + if (megasas_get_pd_list(instance) == 0) { + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { + pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; + sdev1 = scsi_device_lookup(host, i, j, 0); + if (instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) { + if (!sdev1) { + scsi_add_device(host, i, j, 0); + } + if (sdev1) + scsi_device_put(sdev1); + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + } + + if (!instance->requestorId || + (instance->requestorId && + megasas_get_ld_vf_affiliation(instance, 0))) { + if (megasas_ld_list_query(instance, + MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) + megasas_get_ld_list(instance); + for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { + for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; + j++) { + ld_index = + (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + + sdev1 = scsi_device_lookup(host, + MEGASAS_MAX_PD_CHANNELS + i, j, 0); + if (instance->ld_ids[ld_index] + != 0xff) { + if (!sdev1) + scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); + else + scsi_device_put(sdev1); + } else { + if (sdev1) { + scsi_remove_device(sdev1); + scsi_device_put(sdev1); + } + } + } + } + } + } + + if ( instance->aen_cmd != NULL ) { + kfree(ev); + return ; + } + + seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; + + /* Register AEN with FW for latest sequence number plus 1 */ + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + mutex_lock(&instance->aen_mutex); + error = megasas_register_aen(instance, seq_num, + class_locale.word); + mutex_unlock(&instance->aen_mutex); + + if (error) + printk(KERN_ERR "register aen failed error %x\n", error); + + kfree(ev); +} + +/** + * megasas_init - Driver load entry point + */ +static int __init megasas_init(void) +{ + int rval; + + /* + * Announce driver version and other information + */ + printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, + MEGASAS_EXT_VERSION); + + spin_lock_init(&poll_aen_lock); + + support_poll_for_event = 2; + support_device_change = 1; + + memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); + + /* + * Register character device node + */ + rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); + + if (rval < 0) { + printk(KERN_DEBUG "megasas: failed to open device node\n"); + return rval; + } + + megasas_mgmt_majorno = rval; + + /* + * Register ourselves as PCI hotplug module + */ + rval = pci_register_driver(&megasas_pci_driver); + + if (rval) { + printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); + goto err_pcidrv; + } + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_version); + if (rval) + goto err_dcf_attr_ver; + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + if (rval) + goto err_dcf_rel_date; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + if (rval) + goto err_dcf_support_poll_for_event; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); + if (rval) + goto err_dcf_dbg_lvl; + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_device_change); + if (rval) + goto err_dcf_support_device_change; + + return rval; + +err_dcf_support_device_change: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); +err_dcf_dbg_lvl: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + +err_dcf_support_poll_for_event: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + +err_dcf_rel_date: + driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); +err_dcf_attr_ver: + pci_unregister_driver(&megasas_pci_driver); +err_pcidrv: + unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); + return rval; +} + +/** + * megasas_exit - Driver unload entry point + */ +static void __exit megasas_exit(void) +{ + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_device_change); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); + + pci_unregister_driver(&megasas_pci_driver); + unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); +} + +module_init(megasas_init); +module_exit(megasas_exit); diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c new file mode 100644 index 00000000000..081bfff12d0 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_fp.c @@ -0,0 +1,1241 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2012 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_fp.c + * + * Authors: LSI Corporation + * Sumant Patro + * Varad Talamacki + * Manoj Jose + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/uio.h> +#include <linux/uaccess.h> +#include <linux/fs.h> +#include <linux/compat.h> +#include <linux/blkdev.h> +#include <linux/poll.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> + +#include "megaraid_sas_fusion.h" +#include "megaraid_sas.h" +#include <asm/div64.h> + +#define ABS_DIFF(a, b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a))) +#define MR_LD_STATE_OPTIMAL 3 +#define FALSE 0 +#define TRUE 1 + +#define SPAN_DEBUG 0 +#define SPAN_ROW_SIZE(map, ld, index_) (MR_LdSpanPtrGet(ld, index_, map)->spanRowSize) +#define SPAN_ROW_DATA_SIZE(map_, ld, index_) (MR_LdSpanPtrGet(ld, index_, map)->spanRowDataSize) +#define SPAN_INVALID 0xff + +/* Prototypes */ +void mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map, + struct LD_LOAD_BALANCE_INFO *lbInfo); + +static void mr_update_span_set(struct MR_FW_RAID_MAP_ALL *map, + PLD_SPAN_INFO ldSpanInfo); +static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld, + u64 stripRow, u16 stripRef, struct IO_REQUEST_INFO *io_info, + struct RAID_CONTEXT *pRAID_Context, struct MR_FW_RAID_MAP_ALL *map); +static u64 get_row_from_strip(struct megasas_instance *instance, u32 ld, + u64 strip, struct MR_FW_RAID_MAP_ALL *map); + +u32 mega_mod64(u64 dividend, u32 divisor) +{ + u64 d; + u32 remainder; + + if (!divisor) + printk(KERN_ERR "megasas : DIVISOR is zero, in div fn\n"); + d = dividend; + remainder = do_div(d, divisor); + return remainder; +} + +/** + * @param dividend : Dividend + * @param divisor : Divisor + * + * @return quotient + **/ +u64 mega_div64_32(uint64_t dividend, uint32_t divisor) +{ + u32 remainder; + u64 d; + + if (!divisor) + printk(KERN_ERR "megasas : DIVISOR is zero in mod fn\n"); + + d = dividend; + remainder = do_div(d, divisor); + + return d; +} + +struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map) +{ + return &map->raidMap.ldSpanMap[ld].ldRaid; +} + +static struct MR_SPAN_BLOCK_INFO *MR_LdSpanInfoGet(u32 ld, + struct MR_FW_RAID_MAP_ALL + *map) +{ + return &map->raidMap.ldSpanMap[ld].spanBlock[0]; +} + +static u8 MR_LdDataArmGet(u32 ld, u32 armIdx, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.ldSpanMap[ld].dataArmMap[armIdx]; +} + +u16 MR_ArPdGet(u32 ar, u32 arm, struct MR_FW_RAID_MAP_ALL *map) +{ + return le16_to_cpu(map->raidMap.arMapInfo[ar].pd[arm]); +} + +u16 MR_LdSpanArrayGet(u32 ld, u32 span, struct MR_FW_RAID_MAP_ALL *map) +{ + return le16_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span].span.arrayRef); +} + +u16 MR_PdDevHandleGet(u32 pd, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.devHndlInfo[pd].curDevHdl; +} + +u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map) +{ + return le16_to_cpu(map->raidMap.ldSpanMap[ld].ldRaid.targetId); +} + +u8 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map) +{ + return map->raidMap.ldTgtIdToLd[ldTgtId]; +} + +static struct MR_LD_SPAN *MR_LdSpanPtrGet(u32 ld, u32 span, + struct MR_FW_RAID_MAP_ALL *map) +{ + return &map->raidMap.ldSpanMap[ld].spanBlock[span].span; +} + +/* + * This function will validate Map info data provided by FW + */ +u8 MR_ValidateMapInfo(struct megasas_instance *instance) +{ + struct fusion_context *fusion = instance->ctrl_context; + struct MR_FW_RAID_MAP_ALL *map = fusion->ld_map[(instance->map_id & 1)]; + struct LD_LOAD_BALANCE_INFO *lbInfo = fusion->load_balance_info; + PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span; + struct MR_FW_RAID_MAP *pFwRaidMap = &map->raidMap; + struct MR_LD_RAID *raid; + int ldCount, num_lds; + u16 ld; + + + if (le32_to_cpu(pFwRaidMap->totalSize) != + (sizeof(struct MR_FW_RAID_MAP) -sizeof(struct MR_LD_SPAN_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) * le32_to_cpu(pFwRaidMap->ldCount)))) { + printk(KERN_ERR "megasas: map info structure size 0x%x is not matching with ld count\n", + (unsigned int)((sizeof(struct MR_FW_RAID_MAP) - + sizeof(struct MR_LD_SPAN_MAP)) + + (sizeof(struct MR_LD_SPAN_MAP) * + le32_to_cpu(pFwRaidMap->ldCount)))); + printk(KERN_ERR "megasas: span map %x, pFwRaidMap->totalSize " + ": %x\n", (unsigned int)sizeof(struct MR_LD_SPAN_MAP), + le32_to_cpu(pFwRaidMap->totalSize)); + return 0; + } + + if (instance->UnevenSpanSupport) + mr_update_span_set(map, ldSpanInfo); + + mr_update_load_balance_params(map, lbInfo); + + num_lds = le32_to_cpu(map->raidMap.ldCount); + + /*Convert Raid capability values to CPU arch */ + for (ldCount = 0; ldCount < num_lds; ldCount++) { + ld = MR_TargetIdToLdGet(ldCount, map); + raid = MR_LdRaidGet(ld, map); + le32_to_cpus((u32 *)&raid->capability); + } + + return 1; +} + +u32 MR_GetSpanBlock(u32 ld, u64 row, u64 *span_blk, + struct MR_FW_RAID_MAP_ALL *map) +{ + struct MR_SPAN_BLOCK_INFO *pSpanBlock = MR_LdSpanInfoGet(ld, map); + struct MR_QUAD_ELEMENT *quad; + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + u32 span, j; + + for (span = 0; span < raid->spanDepth; span++, pSpanBlock++) { + + for (j = 0; j < le32_to_cpu(pSpanBlock->block_span_info.noElements); j++) { + quad = &pSpanBlock->block_span_info.quad[j]; + + if (le32_to_cpu(quad->diff) == 0) + return SPAN_INVALID; + if (le64_to_cpu(quad->logStart) <= row && row <= + le64_to_cpu(quad->logEnd) && (mega_mod64(row - le64_to_cpu(quad->logStart), + le32_to_cpu(quad->diff))) == 0) { + if (span_blk != NULL) { + u64 blk, debugBlk; + blk = mega_div64_32((row-le64_to_cpu(quad->logStart)), le32_to_cpu(quad->diff)); + debugBlk = blk; + + blk = (blk + le64_to_cpu(quad->offsetInSpan)) << raid->stripeShift; + *span_blk = blk; + } + return span; + } + } + } + return SPAN_INVALID; +} + +/* +****************************************************************************** +* +* Function to print info about span set created in driver from FW raid map +* +* Inputs : +* map - LD map +* ldSpanInfo - ldSpanInfo per HBA instance +*/ +#if SPAN_DEBUG +static int getSpanInfo(struct MR_FW_RAID_MAP_ALL *map, PLD_SPAN_INFO ldSpanInfo) +{ + + u8 span; + u32 element; + struct MR_LD_RAID *raid; + LD_SPAN_SET *span_set; + struct MR_QUAD_ELEMENT *quad; + int ldCount; + u16 ld; + + for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) { + ld = MR_TargetIdToLdGet(ldCount, map); + if (ld >= MAX_LOGICAL_DRIVES) + continue; + raid = MR_LdRaidGet(ld, map); + dev_dbg(&instance->pdev->dev, "LD %x: span_depth=%x\n", + ld, raid->spanDepth); + for (span = 0; span < raid->spanDepth; span++) + dev_dbg(&instance->pdev->dev, "Span=%x," + " number of quads=%x\n", span, + le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span]. + block_span_info.noElements)); + for (element = 0; element < MAX_QUAD_DEPTH; element++) { + span_set = &(ldSpanInfo[ld].span_set[element]); + if (span_set->span_row_data_width == 0) + break; + + dev_dbg(&instance->pdev->dev, "Span Set %x:" + "width=%x, diff=%x\n", element, + (unsigned int)span_set->span_row_data_width, + (unsigned int)span_set->diff); + dev_dbg(&instance->pdev->dev, "logical LBA" + "start=0x%08lx, end=0x%08lx\n", + (long unsigned int)span_set->log_start_lba, + (long unsigned int)span_set->log_end_lba); + dev_dbg(&instance->pdev->dev, "span row start=0x%08lx," + " end=0x%08lx\n", + (long unsigned int)span_set->span_row_start, + (long unsigned int)span_set->span_row_end); + dev_dbg(&instance->pdev->dev, "data row start=0x%08lx," + " end=0x%08lx\n", + (long unsigned int)span_set->data_row_start, + (long unsigned int)span_set->data_row_end); + dev_dbg(&instance->pdev->dev, "data strip start=0x%08lx," + " end=0x%08lx\n", + (long unsigned int)span_set->data_strip_start, + (long unsigned int)span_set->data_strip_end); + + for (span = 0; span < raid->spanDepth; span++) { + if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span]. + block_span_info.noElements) >= + element + 1) { + quad = &map->raidMap.ldSpanMap[ld]. + spanBlock[span].block_span_info. + quad[element]; + dev_dbg(&instance->pdev->dev, "Span=%x," + "Quad=%x, diff=%x\n", span, + element, le32_to_cpu(quad->diff)); + dev_dbg(&instance->pdev->dev, + "offset_in_span=0x%08lx\n", + (long unsigned int)le64_to_cpu(quad->offsetInSpan)); + dev_dbg(&instance->pdev->dev, + "logical start=0x%08lx, end=0x%08lx\n", + (long unsigned int)le64_to_cpu(quad->logStart), + (long unsigned int)le64_to_cpu(quad->logEnd)); + } + } + } + } + return 0; +} +#endif + +/* +****************************************************************************** +* +* This routine calculates the Span block for given row using spanset. +* +* Inputs : +* instance - HBA instance +* ld - Logical drive number +* row - Row number +* map - LD map +* +* Outputs : +* +* span - Span number +* block - Absolute Block number in the physical disk +* div_error - Devide error code. +*/ + +u32 mr_spanset_get_span_block(struct megasas_instance *instance, + u32 ld, u64 row, u64 *span_blk, struct MR_FW_RAID_MAP_ALL *map) +{ + struct fusion_context *fusion = instance->ctrl_context; + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + LD_SPAN_SET *span_set; + struct MR_QUAD_ELEMENT *quad; + u32 span, info; + PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span; + + for (info = 0; info < MAX_QUAD_DEPTH; info++) { + span_set = &(ldSpanInfo[ld].span_set[info]); + + if (span_set->span_row_data_width == 0) + break; + + if (row > span_set->data_row_end) + continue; + + for (span = 0; span < raid->spanDepth; span++) + if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span]. + block_span_info.noElements) >= info+1) { + quad = &map->raidMap.ldSpanMap[ld]. + spanBlock[span]. + block_span_info.quad[info]; + if (le32_to_cpu(quad->diff == 0)) + return SPAN_INVALID; + if (le64_to_cpu(quad->logStart) <= row && + row <= le64_to_cpu(quad->logEnd) && + (mega_mod64(row - le64_to_cpu(quad->logStart), + le32_to_cpu(quad->diff))) == 0) { + if (span_blk != NULL) { + u64 blk; + blk = mega_div64_32 + ((row - le64_to_cpu(quad->logStart)), + le32_to_cpu(quad->diff)); + blk = (blk + le64_to_cpu(quad->offsetInSpan)) + << raid->stripeShift; + *span_blk = blk; + } + return span; + } + } + } + return SPAN_INVALID; +} + +/* +****************************************************************************** +* +* This routine calculates the row for given strip using spanset. +* +* Inputs : +* instance - HBA instance +* ld - Logical drive number +* Strip - Strip +* map - LD map +* +* Outputs : +* +* row - row associated with strip +*/ + +static u64 get_row_from_strip(struct megasas_instance *instance, + u32 ld, u64 strip, struct MR_FW_RAID_MAP_ALL *map) +{ + struct fusion_context *fusion = instance->ctrl_context; + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + LD_SPAN_SET *span_set; + PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span; + u32 info, strip_offset, span, span_offset; + u64 span_set_Strip, span_set_Row, retval; + + for (info = 0; info < MAX_QUAD_DEPTH; info++) { + span_set = &(ldSpanInfo[ld].span_set[info]); + + if (span_set->span_row_data_width == 0) + break; + if (strip > span_set->data_strip_end) + continue; + + span_set_Strip = strip - span_set->data_strip_start; + strip_offset = mega_mod64(span_set_Strip, + span_set->span_row_data_width); + span_set_Row = mega_div64_32(span_set_Strip, + span_set->span_row_data_width) * span_set->diff; + for (span = 0, span_offset = 0; span < raid->spanDepth; span++) + if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span]. + block_span_info.noElements >= info+1)) { + if (strip_offset >= + span_set->strip_offset[span]) + span_offset++; + else + break; + } +#if SPAN_DEBUG + dev_info(&instance->pdev->dev, "Strip 0x%llx," + "span_set_Strip 0x%llx, span_set_Row 0x%llx" + "data width 0x%llx span offset 0x%x\n", strip, + (unsigned long long)span_set_Strip, + (unsigned long long)span_set_Row, + (unsigned long long)span_set->span_row_data_width, + span_offset); + dev_info(&instance->pdev->dev, "For strip 0x%llx" + "row is 0x%llx\n", strip, + (unsigned long long) span_set->data_row_start + + (unsigned long long) span_set_Row + (span_offset - 1)); +#endif + retval = (span_set->data_row_start + span_set_Row + + (span_offset - 1)); + return retval; + } + return -1LLU; +} + + +/* +****************************************************************************** +* +* This routine calculates the Start Strip for given row using spanset. +* +* Inputs : +* instance - HBA instance +* ld - Logical drive number +* row - Row number +* map - LD map +* +* Outputs : +* +* Strip - Start strip associated with row +*/ + +static u64 get_strip_from_row(struct megasas_instance *instance, + u32 ld, u64 row, struct MR_FW_RAID_MAP_ALL *map) +{ + struct fusion_context *fusion = instance->ctrl_context; + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + LD_SPAN_SET *span_set; + struct MR_QUAD_ELEMENT *quad; + PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span; + u32 span, info; + u64 strip; + + for (info = 0; info < MAX_QUAD_DEPTH; info++) { + span_set = &(ldSpanInfo[ld].span_set[info]); + + if (span_set->span_row_data_width == 0) + break; + if (row > span_set->data_row_end) + continue; + + for (span = 0; span < raid->spanDepth; span++) + if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span]. + block_span_info.noElements) >= info+1) { + quad = &map->raidMap.ldSpanMap[ld]. + spanBlock[span].block_span_info.quad[info]; + if (le64_to_cpu(quad->logStart) <= row && + row <= le64_to_cpu(quad->logEnd) && + mega_mod64((row - le64_to_cpu(quad->logStart)), + le32_to_cpu(quad->diff)) == 0) { + strip = mega_div64_32 + (((row - span_set->data_row_start) + - le64_to_cpu(quad->logStart)), + le32_to_cpu(quad->diff)); + strip *= span_set->span_row_data_width; + strip += span_set->data_strip_start; + strip += span_set->strip_offset[span]; + return strip; + } + } + } + dev_err(&instance->pdev->dev, "get_strip_from_row" + "returns invalid strip for ld=%x, row=%lx\n", + ld, (long unsigned int)row); + return -1; +} + +/* +****************************************************************************** +* +* This routine calculates the Physical Arm for given strip using spanset. +* +* Inputs : +* instance - HBA instance +* ld - Logical drive number +* strip - Strip +* map - LD map +* +* Outputs : +* +* Phys Arm - Phys Arm associated with strip +*/ + +static u32 get_arm_from_strip(struct megasas_instance *instance, + u32 ld, u64 strip, struct MR_FW_RAID_MAP_ALL *map) +{ + struct fusion_context *fusion = instance->ctrl_context; + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + LD_SPAN_SET *span_set; + PLD_SPAN_INFO ldSpanInfo = fusion->log_to_span; + u32 info, strip_offset, span, span_offset, retval; + + for (info = 0 ; info < MAX_QUAD_DEPTH; info++) { + span_set = &(ldSpanInfo[ld].span_set[info]); + + if (span_set->span_row_data_width == 0) + break; + if (strip > span_set->data_strip_end) + continue; + + strip_offset = (uint)mega_mod64 + ((strip - span_set->data_strip_start), + span_set->span_row_data_width); + + for (span = 0, span_offset = 0; span < raid->spanDepth; span++) + if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span]. + block_span_info.noElements) >= info+1) { + if (strip_offset >= + span_set->strip_offset[span]) + span_offset = + span_set->strip_offset[span]; + else + break; + } +#if SPAN_DEBUG + dev_info(&instance->pdev->dev, "get_arm_from_strip:" + "for ld=0x%x strip=0x%lx arm is 0x%x\n", ld, + (long unsigned int)strip, (strip_offset - span_offset)); +#endif + retval = (strip_offset - span_offset); + return retval; + } + + dev_err(&instance->pdev->dev, "get_arm_from_strip" + "returns invalid arm for ld=%x strip=%lx\n", + ld, (long unsigned int)strip); + + return -1; +} + +/* This Function will return Phys arm */ +u8 get_arm(struct megasas_instance *instance, u32 ld, u8 span, u64 stripe, + struct MR_FW_RAID_MAP_ALL *map) +{ + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + /* Need to check correct default value */ + u32 arm = 0; + + switch (raid->level) { + case 0: + case 5: + case 6: + arm = mega_mod64(stripe, SPAN_ROW_SIZE(map, ld, span)); + break; + case 1: + /* start with logical arm */ + arm = get_arm_from_strip(instance, ld, stripe, map); + if (arm != -1U) + arm *= 2; + break; + } + + return arm; +} + + +/* +****************************************************************************** +* +* This routine calculates the arm, span and block for the specified stripe and +* reference in stripe using spanset +* +* Inputs : +* +* ld - Logical drive number +* stripRow - Stripe number +* stripRef - Reference in stripe +* +* Outputs : +* +* span - Span number +* block - Absolute Block number in the physical disk +*/ +static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld, + u64 stripRow, u16 stripRef, struct IO_REQUEST_INFO *io_info, + struct RAID_CONTEXT *pRAID_Context, + struct MR_FW_RAID_MAP_ALL *map) +{ + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + u32 pd, arRef; + u8 physArm, span; + u64 row; + u8 retval = TRUE; + u8 do_invader = 0; + u64 *pdBlock = &io_info->pdBlock; + u16 *pDevHandle = &io_info->devHandle; + u32 logArm, rowMod, armQ, arm; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER || + instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + do_invader = 1; + + /*Get row and span from io_info for Uneven Span IO.*/ + row = io_info->start_row; + span = io_info->start_span; + + + if (raid->level == 6) { + logArm = get_arm_from_strip(instance, ld, stripRow, map); + if (logArm == -1U) + return FALSE; + rowMod = mega_mod64(row, SPAN_ROW_SIZE(map, ld, span)); + armQ = SPAN_ROW_SIZE(map, ld, span) - 1 - rowMod; + arm = armQ + 1 + logArm; + if (arm >= SPAN_ROW_SIZE(map, ld, span)) + arm -= SPAN_ROW_SIZE(map, ld, span); + physArm = (u8)arm; + } else + /* Calculate the arm */ + physArm = get_arm(instance, ld, span, stripRow, map); + if (physArm == 0xFF) + return FALSE; + + arRef = MR_LdSpanArrayGet(ld, span, map); + pd = MR_ArPdGet(arRef, physArm, map); + + if (pd != MR_PD_INVALID) + *pDevHandle = MR_PdDevHandleGet(pd, map); + else { + *pDevHandle = MR_PD_INVALID; + if ((raid->level >= 5) && + (!do_invader || (do_invader && + (raid->regTypeReqOnRead != REGION_TYPE_UNUSED)))) + pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE; + else if (raid->level == 1) { + pd = MR_ArPdGet(arRef, physArm + 1, map); + if (pd != MR_PD_INVALID) + *pDevHandle = MR_PdDevHandleGet(pd, map); + } + } + + *pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk); + pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) | + physArm; + return retval; +} + +/* +****************************************************************************** +* +* This routine calculates the arm, span and block for the specified stripe and +* reference in stripe. +* +* Inputs : +* +* ld - Logical drive number +* stripRow - Stripe number +* stripRef - Reference in stripe +* +* Outputs : +* +* span - Span number +* block - Absolute Block number in the physical disk +*/ +u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow, + u16 stripRef, struct IO_REQUEST_INFO *io_info, + struct RAID_CONTEXT *pRAID_Context, + struct MR_FW_RAID_MAP_ALL *map) +{ + struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map); + u32 pd, arRef; + u8 physArm, span; + u64 row; + u8 retval = TRUE; + u8 do_invader = 0; + u64 *pdBlock = &io_info->pdBlock; + u16 *pDevHandle = &io_info->devHandle; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER || + instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + do_invader = 1; + + row = mega_div64_32(stripRow, raid->rowDataSize); + + if (raid->level == 6) { + /* logical arm within row */ + u32 logArm = mega_mod64(stripRow, raid->rowDataSize); + u32 rowMod, armQ, arm; + + if (raid->rowSize == 0) + return FALSE; + /* get logical row mod */ + rowMod = mega_mod64(row, raid->rowSize); + armQ = raid->rowSize-1-rowMod; /* index of Q drive */ + arm = armQ+1+logArm; /* data always logically follows Q */ + if (arm >= raid->rowSize) /* handle wrap condition */ + arm -= raid->rowSize; + physArm = (u8)arm; + } else { + if (raid->modFactor == 0) + return FALSE; + physArm = MR_LdDataArmGet(ld, mega_mod64(stripRow, + raid->modFactor), + map); + } + + if (raid->spanDepth == 1) { + span = 0; + *pdBlock = row << raid->stripeShift; + } else { + span = (u8)MR_GetSpanBlock(ld, row, pdBlock, map); + if (span == SPAN_INVALID) + return FALSE; + } + + /* Get the array on which this span is present */ + arRef = MR_LdSpanArrayGet(ld, span, map); + pd = MR_ArPdGet(arRef, physArm, map); /* Get the pd */ + + if (pd != MR_PD_INVALID) + /* Get dev handle from Pd. */ + *pDevHandle = MR_PdDevHandleGet(pd, map); + else { + *pDevHandle = MR_PD_INVALID; /* set dev handle as invalid. */ + if ((raid->level >= 5) && + (!do_invader || (do_invader && + (raid->regTypeReqOnRead != REGION_TYPE_UNUSED)))) + pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE; + else if (raid->level == 1) { + /* Get alternate Pd. */ + pd = MR_ArPdGet(arRef, physArm + 1, map); + if (pd != MR_PD_INVALID) + /* Get dev handle from Pd */ + *pDevHandle = MR_PdDevHandleGet(pd, map); + } + } + + *pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk); + pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) | + physArm; + return retval; +} + +/* +****************************************************************************** +* +* MR_BuildRaidContext function +* +* This function will initiate command processing. The start/end row and strip +* information is calculated then the lock is acquired. +* This function will return 0 if region lock was acquired OR return num strips +*/ +u8 +MR_BuildRaidContext(struct megasas_instance *instance, + struct IO_REQUEST_INFO *io_info, + struct RAID_CONTEXT *pRAID_Context, + struct MR_FW_RAID_MAP_ALL *map, u8 **raidLUN) +{ + struct MR_LD_RAID *raid; + u32 ld, stripSize, stripe_mask; + u64 endLba, endStrip, endRow, start_row, start_strip; + u64 regStart; + u32 regSize; + u8 num_strips, numRows; + u16 ref_in_start_stripe, ref_in_end_stripe; + u64 ldStartBlock; + u32 numBlocks, ldTgtId; + u8 isRead; + u8 retval = 0; + u8 startlba_span = SPAN_INVALID; + u64 *pdBlock = &io_info->pdBlock; + + ldStartBlock = io_info->ldStartBlock; + numBlocks = io_info->numBlocks; + ldTgtId = io_info->ldTgtId; + isRead = io_info->isRead; + io_info->IoforUnevenSpan = 0; + io_info->start_span = SPAN_INVALID; + + ld = MR_TargetIdToLdGet(ldTgtId, map); + raid = MR_LdRaidGet(ld, map); + + /* + * if rowDataSize @RAID map and spanRowDataSize @SPAN INFO are zero + * return FALSE + */ + if (raid->rowDataSize == 0) { + if (MR_LdSpanPtrGet(ld, 0, map)->spanRowDataSize == 0) + return FALSE; + else if (instance->UnevenSpanSupport) { + io_info->IoforUnevenSpan = 1; + } else { + dev_info(&instance->pdev->dev, + "raid->rowDataSize is 0, but has SPAN[0]" + "rowDataSize = 0x%0x," + "but there is _NO_ UnevenSpanSupport\n", + MR_LdSpanPtrGet(ld, 0, map)->spanRowDataSize); + return FALSE; + } + } + + stripSize = 1 << raid->stripeShift; + stripe_mask = stripSize-1; + + + /* + * calculate starting row and stripe, and number of strips and rows + */ + start_strip = ldStartBlock >> raid->stripeShift; + ref_in_start_stripe = (u16)(ldStartBlock & stripe_mask); + endLba = ldStartBlock + numBlocks - 1; + ref_in_end_stripe = (u16)(endLba & stripe_mask); + endStrip = endLba >> raid->stripeShift; + num_strips = (u8)(endStrip - start_strip + 1); /* End strip */ + + if (io_info->IoforUnevenSpan) { + start_row = get_row_from_strip(instance, ld, start_strip, map); + endRow = get_row_from_strip(instance, ld, endStrip, map); + if (start_row == -1ULL || endRow == -1ULL) { + dev_info(&instance->pdev->dev, "return from %s %d." + "Send IO w/o region lock.\n", + __func__, __LINE__); + return FALSE; + } + + if (raid->spanDepth == 1) { + startlba_span = 0; + *pdBlock = start_row << raid->stripeShift; + } else + startlba_span = (u8)mr_spanset_get_span_block(instance, + ld, start_row, pdBlock, map); + if (startlba_span == SPAN_INVALID) { + dev_info(&instance->pdev->dev, "return from %s %d" + "for row 0x%llx,start strip %llx" + "endSrip %llx\n", __func__, __LINE__, + (unsigned long long)start_row, + (unsigned long long)start_strip, + (unsigned long long)endStrip); + return FALSE; + } + io_info->start_span = startlba_span; + io_info->start_row = start_row; +#if SPAN_DEBUG + dev_dbg(&instance->pdev->dev, "Check Span number from %s %d" + "for row 0x%llx, start strip 0x%llx end strip 0x%llx" + " span 0x%x\n", __func__, __LINE__, + (unsigned long long)start_row, + (unsigned long long)start_strip, + (unsigned long long)endStrip, startlba_span); + dev_dbg(&instance->pdev->dev, "start_row 0x%llx endRow 0x%llx" + "Start span 0x%x\n", (unsigned long long)start_row, + (unsigned long long)endRow, startlba_span); +#endif + } else { + start_row = mega_div64_32(start_strip, raid->rowDataSize); + endRow = mega_div64_32(endStrip, raid->rowDataSize); + } + numRows = (u8)(endRow - start_row + 1); + + /* + * calculate region info. + */ + + /* assume region is at the start of the first row */ + regStart = start_row << raid->stripeShift; + /* assume this IO needs the full row - we'll adjust if not true */ + regSize = stripSize; + + /* Check if we can send this I/O via FastPath */ + if (raid->capability.fpCapable) { + if (isRead) + io_info->fpOkForIo = (raid->capability.fpReadCapable && + ((num_strips == 1) || + raid->capability. + fpReadAcrossStripe)); + else + io_info->fpOkForIo = (raid->capability.fpWriteCapable && + ((num_strips == 1) || + raid->capability. + fpWriteAcrossStripe)); + } else + io_info->fpOkForIo = FALSE; + + if (numRows == 1) { + /* single-strip IOs can always lock only the data needed */ + if (num_strips == 1) { + regStart += ref_in_start_stripe; + regSize = numBlocks; + } + /* multi-strip IOs always need to full stripe locked */ + } else if (io_info->IoforUnevenSpan == 0) { + /* + * For Even span region lock optimization. + * If the start strip is the last in the start row + */ + if (start_strip == (start_row + 1) * raid->rowDataSize - 1) { + regStart += ref_in_start_stripe; + /* initialize count to sectors from startref to end + of strip */ + regSize = stripSize - ref_in_start_stripe; + } + + /* add complete rows in the middle of the transfer */ + if (numRows > 2) + regSize += (numRows-2) << raid->stripeShift; + + /* if IO ends within first strip of last row*/ + if (endStrip == endRow*raid->rowDataSize) + regSize += ref_in_end_stripe+1; + else + regSize += stripSize; + } else { + /* + * For Uneven span region lock optimization. + * If the start strip is the last in the start row + */ + if (start_strip == (get_strip_from_row(instance, ld, start_row, map) + + SPAN_ROW_DATA_SIZE(map, ld, startlba_span) - 1)) { + regStart += ref_in_start_stripe; + /* initialize count to sectors from + * startRef to end of strip + */ + regSize = stripSize - ref_in_start_stripe; + } + /* Add complete rows in the middle of the transfer*/ + + if (numRows > 2) + /* Add complete rows in the middle of the transfer*/ + regSize += (numRows-2) << raid->stripeShift; + + /* if IO ends within first strip of last row */ + if (endStrip == get_strip_from_row(instance, ld, endRow, map)) + regSize += ref_in_end_stripe + 1; + else + regSize += stripSize; + } + + pRAID_Context->timeoutValue = + cpu_to_le16(raid->fpIoTimeoutForLd ? + raid->fpIoTimeoutForLd : + map->raidMap.fpPdIoTimeoutSec); + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + pRAID_Context->regLockFlags = (isRead) ? + raid->regTypeReqOnRead : raid->regTypeReqOnWrite; + else + pRAID_Context->regLockFlags = (isRead) ? + REGION_TYPE_SHARED_READ : raid->regTypeReqOnWrite; + pRAID_Context->VirtualDiskTgtId = raid->targetId; + pRAID_Context->regLockRowLBA = cpu_to_le64(regStart); + pRAID_Context->regLockLength = cpu_to_le32(regSize); + pRAID_Context->configSeqNum = raid->seqNum; + /* save pointer to raid->LUN array */ + *raidLUN = raid->LUN; + + + /*Get Phy Params only if FP capable, or else leave it to MR firmware + to do the calculation.*/ + if (io_info->fpOkForIo) { + retval = io_info->IoforUnevenSpan ? + mr_spanset_get_phy_params(instance, ld, + start_strip, ref_in_start_stripe, + io_info, pRAID_Context, map) : + MR_GetPhyParams(instance, ld, start_strip, + ref_in_start_stripe, io_info, + pRAID_Context, map); + /* If IO on an invalid Pd, then FP is not possible.*/ + if (io_info->devHandle == MR_PD_INVALID) + io_info->fpOkForIo = FALSE; + return retval; + } else if (isRead) { + uint stripIdx; + for (stripIdx = 0; stripIdx < num_strips; stripIdx++) { + retval = io_info->IoforUnevenSpan ? + mr_spanset_get_phy_params(instance, ld, + start_strip + stripIdx, + ref_in_start_stripe, io_info, + pRAID_Context, map) : + MR_GetPhyParams(instance, ld, + start_strip + stripIdx, ref_in_start_stripe, + io_info, pRAID_Context, map); + if (!retval) + return TRUE; + } + } + +#if SPAN_DEBUG + /* Just for testing what arm we get for strip.*/ + if (io_info->IoforUnevenSpan) + get_arm_from_strip(instance, ld, start_strip, map); +#endif + return TRUE; +} + +/* +****************************************************************************** +* +* This routine pepare spanset info from Valid Raid map and store it into +* local copy of ldSpanInfo per instance data structure. +* +* Inputs : +* map - LD map +* ldSpanInfo - ldSpanInfo per HBA instance +* +*/ +void mr_update_span_set(struct MR_FW_RAID_MAP_ALL *map, + PLD_SPAN_INFO ldSpanInfo) +{ + u8 span, count; + u32 element, span_row_width; + u64 span_row; + struct MR_LD_RAID *raid; + LD_SPAN_SET *span_set, *span_set_prev; + struct MR_QUAD_ELEMENT *quad; + int ldCount; + u16 ld; + + + for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) { + ld = MR_TargetIdToLdGet(ldCount, map); + if (ld >= MAX_LOGICAL_DRIVES) + continue; + raid = MR_LdRaidGet(ld, map); + for (element = 0; element < MAX_QUAD_DEPTH; element++) { + for (span = 0; span < raid->spanDepth; span++) { + if (le32_to_cpu(map->raidMap.ldSpanMap[ld].spanBlock[span]. + block_span_info.noElements) < + element + 1) + continue; + span_set = &(ldSpanInfo[ld].span_set[element]); + quad = &map->raidMap.ldSpanMap[ld]. + spanBlock[span].block_span_info. + quad[element]; + + span_set->diff = le32_to_cpu(quad->diff); + + for (count = 0, span_row_width = 0; + count < raid->spanDepth; count++) { + if (le32_to_cpu(map->raidMap.ldSpanMap[ld]. + spanBlock[count]. + block_span_info. + noElements) >= element + 1) { + span_set->strip_offset[count] = + span_row_width; + span_row_width += + MR_LdSpanPtrGet + (ld, count, map)->spanRowDataSize; + printk(KERN_INFO "megasas:" + "span %x rowDataSize %x\n", + count, MR_LdSpanPtrGet + (ld, count, map)->spanRowDataSize); + } + } + + span_set->span_row_data_width = span_row_width; + span_row = mega_div64_32(((le64_to_cpu(quad->logEnd) - + le64_to_cpu(quad->logStart)) + le32_to_cpu(quad->diff)), + le32_to_cpu(quad->diff)); + + if (element == 0) { + span_set->log_start_lba = 0; + span_set->log_end_lba = + ((span_row << raid->stripeShift) + * span_row_width) - 1; + + span_set->span_row_start = 0; + span_set->span_row_end = span_row - 1; + + span_set->data_strip_start = 0; + span_set->data_strip_end = + (span_row * span_row_width) - 1; + + span_set->data_row_start = 0; + span_set->data_row_end = + (span_row * le32_to_cpu(quad->diff)) - 1; + } else { + span_set_prev = &(ldSpanInfo[ld]. + span_set[element - 1]); + span_set->log_start_lba = + span_set_prev->log_end_lba + 1; + span_set->log_end_lba = + span_set->log_start_lba + + ((span_row << raid->stripeShift) + * span_row_width) - 1; + + span_set->span_row_start = + span_set_prev->span_row_end + 1; + span_set->span_row_end = + span_set->span_row_start + span_row - 1; + + span_set->data_strip_start = + span_set_prev->data_strip_end + 1; + span_set->data_strip_end = + span_set->data_strip_start + + (span_row * span_row_width) - 1; + + span_set->data_row_start = + span_set_prev->data_row_end + 1; + span_set->data_row_end = + span_set->data_row_start + + (span_row * le32_to_cpu(quad->diff)) - 1; + } + break; + } + if (span == raid->spanDepth) + break; + } + } +#if SPAN_DEBUG + getSpanInfo(map, ldSpanInfo); +#endif + +} + +void +mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map, + struct LD_LOAD_BALANCE_INFO *lbInfo) +{ + int ldCount; + u16 ld; + struct MR_LD_RAID *raid; + + for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) { + ld = MR_TargetIdToLdGet(ldCount, map); + if (ld >= MAX_LOGICAL_DRIVES) { + lbInfo[ldCount].loadBalanceFlag = 0; + continue; + } + + raid = MR_LdRaidGet(ld, map); + + /* Two drive Optimal RAID 1 */ + if ((raid->level == 1) && (raid->rowSize == 2) && + (raid->spanDepth == 1) && raid->ldState == + MR_LD_STATE_OPTIMAL) { + u32 pd, arRef; + + lbInfo[ldCount].loadBalanceFlag = 1; + + /* Get the array on which this span is present */ + arRef = MR_LdSpanArrayGet(ld, 0, map); + + /* Get the Pd */ + pd = MR_ArPdGet(arRef, 0, map); + /* Get dev handle from Pd */ + lbInfo[ldCount].raid1DevHandle[0] = + MR_PdDevHandleGet(pd, map); + /* Get the Pd */ + pd = MR_ArPdGet(arRef, 1, map); + + /* Get the dev handle from Pd */ + lbInfo[ldCount].raid1DevHandle[1] = + MR_PdDevHandleGet(pd, map); + } else + lbInfo[ldCount].loadBalanceFlag = 0; + } +} + +u8 megasas_get_best_arm(struct LD_LOAD_BALANCE_INFO *lbInfo, u8 arm, u64 block, + u32 count) +{ + u16 pend0, pend1; + u64 diff0, diff1; + u8 bestArm; + + /* get the pending cmds for the data and mirror arms */ + pend0 = atomic_read(&lbInfo->scsi_pending_cmds[0]); + pend1 = atomic_read(&lbInfo->scsi_pending_cmds[1]); + + /* Determine the disk whose head is nearer to the req. block */ + diff0 = ABS_DIFF(block, lbInfo->last_accessed_block[0]); + diff1 = ABS_DIFF(block, lbInfo->last_accessed_block[1]); + bestArm = (diff0 <= diff1 ? 0 : 1); + + /*Make balance count from 16 to 4 to keep driver in sync with Firmware*/ + if ((bestArm == arm && pend0 > pend1 + 4) || + (bestArm != arm && pend1 > pend0 + 4)) + bestArm ^= 1; + + /* Update the last accessed block on the correct pd */ + lbInfo->last_accessed_block[bestArm] = block + count - 1; + + return bestArm; +} + +u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo, + struct IO_REQUEST_INFO *io_info) +{ + u8 arm, old_arm; + u16 devHandle; + + old_arm = lbInfo->raid1DevHandle[0] == io_info->devHandle ? 0 : 1; + + /* get best new arm */ + arm = megasas_get_best_arm(lbInfo, old_arm, io_info->ldStartBlock, + io_info->numBlocks); + devHandle = lbInfo->raid1DevHandle[arm]; + atomic_inc(&lbInfo->scsi_pending_cmds[arm]); + + return devHandle; +} diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c new file mode 100644 index 00000000000..22600419ae9 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -0,0 +1,2676 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2012 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_fusion.c + * + * Authors: LSI Corporation + * Sumant Patro + * Adam Radford <linuxraid@lsi.com> + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/uio.h> +#include <linux/uaccess.h> +#include <linux/fs.h> +#include <linux/compat.h> +#include <linux/blkdev.h> +#include <linux/mutex.h> +#include <linux/poll.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> + +#include "megaraid_sas_fusion.h" +#include "megaraid_sas.h" + +extern void megasas_free_cmds(struct megasas_instance *instance); +extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance + *instance); +extern void +megasas_complete_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd, u8 alt_status); +int megasas_is_ldio(struct scsi_cmnd *cmd); +int +wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, + int seconds); + +void +megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); +int megasas_alloc_cmds(struct megasas_instance *instance); +int +megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs); +int +megasas_issue_polled(struct megasas_instance *instance, + struct megasas_cmd *cmd); +void +megasas_check_and_restore_queue_depth(struct megasas_instance *instance); + +u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo, + struct IO_REQUEST_INFO *in_info); +int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); +void megaraid_sas_kill_hba(struct megasas_instance *instance); + +extern u32 megasas_dbg_lvl; +void megasas_sriov_heartbeat_handler(unsigned long instance_addr); +int megasas_sriov_start_heartbeat(struct megasas_instance *instance, + int initial); +void megasas_start_timer(struct megasas_instance *instance, + struct timer_list *timer, + void *fn, unsigned long interval); +extern struct megasas_mgmt_info megasas_mgmt_info; +extern int resetwaittime; + +/** + * megasas_enable_intr_fusion - Enables interrupts + * @regs: MFI register set + */ +void +megasas_enable_intr_fusion(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + /* For Thunderbolt/Invader also clear intr on enable */ + writel(~0, ®s->outbound_intr_status); + readl(®s->outbound_intr_status); + + writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); + instance->mask_interrupts = 0; +} + +/** + * megasas_disable_intr_fusion - Disables interrupt + * @regs: MFI register set + */ +void +megasas_disable_intr_fusion(struct megasas_instance *instance) +{ + u32 mask = 0xFFFFFFFF; + u32 status; + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + instance->mask_interrupts = 1; + + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + status = readl(®s->outbound_intr_mask); +} + +int +megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs) +{ + u32 status; + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & 1) { + writel(status, ®s->outbound_intr_status); + readl(®s->outbound_intr_status); + return 1; + } + if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) + return 0; + + return 1; +} + +/** + * megasas_get_cmd_fusion - Get a command from the free pool + * @instance: Adapter soft state + * + * Returns a free command from the pool + */ +struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance + *instance) +{ + unsigned long flags; + struct fusion_context *fusion = + (struct fusion_context *)instance->ctrl_context; + struct megasas_cmd_fusion *cmd = NULL; + + spin_lock_irqsave(&fusion->cmd_pool_lock, flags); + + if (!list_empty(&fusion->cmd_pool)) { + cmd = list_entry((&fusion->cmd_pool)->next, + struct megasas_cmd_fusion, list); + list_del_init(&cmd->list); + } else { + printk(KERN_ERR "megasas: Command pool (fusion) empty!\n"); + } + + spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); + return cmd; +} + +/** + * megasas_return_cmd_fusion - Return a cmd to free command pool + * @instance: Adapter soft state + * @cmd: Command packet to be returned to free command pool + */ +static inline void +megasas_return_cmd_fusion(struct megasas_instance *instance, + struct megasas_cmd_fusion *cmd) +{ + unsigned long flags; + struct fusion_context *fusion = + (struct fusion_context *)instance->ctrl_context; + + spin_lock_irqsave(&fusion->cmd_pool_lock, flags); + + cmd->scmd = NULL; + cmd->sync_cmd_idx = (u32)ULONG_MAX; + list_add_tail(&cmd->list, &fusion->cmd_pool); + + spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags); +} + +/** + * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool + * @instance: Adapter soft state + */ +static void megasas_teardown_frame_pool_fusion( + struct megasas_instance *instance) +{ + int i; + struct fusion_context *fusion = instance->ctrl_context; + + u16 max_cmd = instance->max_fw_cmds; + + struct megasas_cmd_fusion *cmd; + + if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) { + printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, " + "sense pool : %p\n", fusion->sg_dma_pool, + fusion->sense_dma_pool); + return; + } + + /* + * Return all frames to pool + */ + for (i = 0; i < max_cmd; i++) { + + cmd = fusion->cmd_list[i]; + + if (cmd->sg_frame) + pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame, + cmd->sg_frame_phys_addr); + + if (cmd->sense) + pci_pool_free(fusion->sense_dma_pool, cmd->sense, + cmd->sense_phys_addr); + } + + /* + * Now destroy the pool itself + */ + pci_pool_destroy(fusion->sg_dma_pool); + pci_pool_destroy(fusion->sense_dma_pool); + + fusion->sg_dma_pool = NULL; + fusion->sense_dma_pool = NULL; +} + +/** + * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool + * @instance: Adapter soft state + */ +void +megasas_free_cmds_fusion(struct megasas_instance *instance) +{ + int i; + struct fusion_context *fusion = instance->ctrl_context; + + u32 max_cmds, req_sz, reply_sz, io_frames_sz; + + + req_sz = fusion->request_alloc_sz; + reply_sz = fusion->reply_alloc_sz; + io_frames_sz = fusion->io_frames_alloc_sz; + + max_cmds = instance->max_fw_cmds; + + /* Free descriptors and request Frames memory */ + if (fusion->req_frames_desc) + dma_free_coherent(&instance->pdev->dev, req_sz, + fusion->req_frames_desc, + fusion->req_frames_desc_phys); + + if (fusion->reply_frames_desc) { + pci_pool_free(fusion->reply_frames_desc_pool, + fusion->reply_frames_desc, + fusion->reply_frames_desc_phys); + pci_pool_destroy(fusion->reply_frames_desc_pool); + } + + if (fusion->io_request_frames) { + pci_pool_free(fusion->io_request_frames_pool, + fusion->io_request_frames, + fusion->io_request_frames_phys); + pci_pool_destroy(fusion->io_request_frames_pool); + } + + /* Free the Fusion frame pool */ + megasas_teardown_frame_pool_fusion(instance); + + /* Free all the commands in the cmd_list */ + for (i = 0; i < max_cmds; i++) + kfree(fusion->cmd_list[i]); + + /* Free the cmd_list buffer itself */ + kfree(fusion->cmd_list); + fusion->cmd_list = NULL; + + INIT_LIST_HEAD(&fusion->cmd_pool); +} + +/** + * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames + * @instance: Adapter soft state + * + */ +static int megasas_create_frame_pool_fusion(struct megasas_instance *instance) +{ + int i; + u32 max_cmd; + struct fusion_context *fusion; + struct megasas_cmd_fusion *cmd; + u32 total_sz_chain_frame; + + fusion = instance->ctrl_context; + max_cmd = instance->max_fw_cmds; + + total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME; + + /* + * Use DMA pool facility provided by PCI layer + */ + + fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion", + instance->pdev, + total_sz_chain_frame, 4, + 0); + if (!fusion->sg_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup request pool " + "fusion\n"); + return -ENOMEM; + } + fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion", + instance->pdev, + SCSI_SENSE_BUFFERSIZE, 64, 0); + + if (!fusion->sense_dma_pool) { + printk(KERN_DEBUG "megasas: failed to setup sense pool " + "fusion\n"); + pci_pool_destroy(fusion->sg_dma_pool); + fusion->sg_dma_pool = NULL; + return -ENOMEM; + } + + /* + * Allocate and attach a frame to each of the commands in cmd_list + */ + for (i = 0; i < max_cmd; i++) { + + cmd = fusion->cmd_list[i]; + + cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool, + GFP_KERNEL, + &cmd->sg_frame_phys_addr); + + cmd->sense = pci_pool_alloc(fusion->sense_dma_pool, + GFP_KERNEL, &cmd->sense_phys_addr); + /* + * megasas_teardown_frame_pool_fusion() takes care of freeing + * whatever has been allocated + */ + if (!cmd->sg_frame || !cmd->sense) { + printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n"); + megasas_teardown_frame_pool_fusion(instance); + return -ENOMEM; + } + } + return 0; +} + +/** + * megasas_alloc_cmds_fusion - Allocates the command packets + * @instance: Adapter soft state + * + * + * Each frame has a 32-bit field called context. This context is used to get + * back the megasas_cmd_fusion from the frame when a frame gets completed + * In this driver, the 32 bit values are the indices into an array cmd_list. + * This array is used only to look up the megasas_cmd_fusion given the context. + * The free commands themselves are maintained in a linked list called cmd_pool. + * + * cmds are formed in the io_request and sg_frame members of the + * megasas_cmd_fusion. The context field is used to get a request descriptor + * and is used as SMID of the cmd. + * SMID value range is from 1 to max_fw_cmds. + */ +int +megasas_alloc_cmds_fusion(struct megasas_instance *instance) +{ + int i, j, count; + u32 max_cmd, io_frames_sz; + struct fusion_context *fusion; + struct megasas_cmd_fusion *cmd; + union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; + u32 offset; + dma_addr_t io_req_base_phys; + u8 *io_req_base; + + fusion = instance->ctrl_context; + + max_cmd = instance->max_fw_cmds; + + fusion->req_frames_desc = + dma_alloc_coherent(&instance->pdev->dev, + fusion->request_alloc_sz, + &fusion->req_frames_desc_phys, GFP_KERNEL); + + if (!fusion->req_frames_desc) { + printk(KERN_ERR "megasas; Could not allocate memory for " + "request_frames\n"); + goto fail_req_desc; + } + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + fusion->reply_frames_desc_pool = + pci_pool_create("reply_frames pool", instance->pdev, + fusion->reply_alloc_sz * count, 16, 0); + + if (!fusion->reply_frames_desc_pool) { + printk(KERN_ERR "megasas; Could not allocate memory for " + "reply_frame pool\n"); + goto fail_reply_desc; + } + + fusion->reply_frames_desc = + pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL, + &fusion->reply_frames_desc_phys); + if (!fusion->reply_frames_desc) { + printk(KERN_ERR "megasas; Could not allocate memory for " + "reply_frame pool\n"); + pci_pool_destroy(fusion->reply_frames_desc_pool); + goto fail_reply_desc; + } + + reply_desc = fusion->reply_frames_desc; + for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) + reply_desc->Words = ULLONG_MAX; + + io_frames_sz = fusion->io_frames_alloc_sz; + + fusion->io_request_frames_pool = + pci_pool_create("io_request_frames pool", instance->pdev, + fusion->io_frames_alloc_sz, 16, 0); + + if (!fusion->io_request_frames_pool) { + printk(KERN_ERR "megasas: Could not allocate memory for " + "io_request_frame pool\n"); + goto fail_io_frames; + } + + fusion->io_request_frames = + pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL, + &fusion->io_request_frames_phys); + if (!fusion->io_request_frames) { + printk(KERN_ERR "megasas: Could not allocate memory for " + "io_request_frames frames\n"); + pci_pool_destroy(fusion->io_request_frames_pool); + goto fail_io_frames; + } + + /* + * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. + * Allocate the dynamic array first and then allocate individual + * commands. + */ + fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *) + * max_cmd, GFP_KERNEL); + + if (!fusion->cmd_list) { + printk(KERN_DEBUG "megasas: out of memory. Could not alloc " + "memory for cmd_list_fusion\n"); + goto fail_cmd_list; + } + + max_cmd = instance->max_fw_cmds; + for (i = 0; i < max_cmd; i++) { + fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion), + GFP_KERNEL); + if (!fusion->cmd_list[i]) { + printk(KERN_ERR "Could not alloc cmd list fusion\n"); + + for (j = 0; j < i; j++) + kfree(fusion->cmd_list[j]); + + kfree(fusion->cmd_list); + fusion->cmd_list = NULL; + goto fail_cmd_list; + } + } + + /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */ + io_req_base = fusion->io_request_frames + + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; + io_req_base_phys = fusion->io_request_frames_phys + + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; + + /* + * Add all the commands to command pool (fusion->cmd_pool) + */ + + /* SMID 0 is reserved. Set SMID/index from 1 */ + for (i = 0; i < max_cmd; i++) { + cmd = fusion->cmd_list[i]; + offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; + memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); + cmd->index = i + 1; + cmd->scmd = NULL; + cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */ + cmd->instance = instance; + cmd->io_request = + (struct MPI2_RAID_SCSI_IO_REQUEST *) + (io_req_base + offset); + memset(cmd->io_request, 0, + sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); + cmd->io_request_phys_addr = io_req_base_phys + offset; + + list_add_tail(&cmd->list, &fusion->cmd_pool); + } + + /* + * Create a frame pool and assign one frame to each cmd + */ + if (megasas_create_frame_pool_fusion(instance)) { + printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); + megasas_free_cmds_fusion(instance); + goto fail_req_desc; + } + + return 0; + +fail_cmd_list: + pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames, + fusion->io_request_frames_phys); + pci_pool_destroy(fusion->io_request_frames_pool); +fail_io_frames: + dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, + fusion->reply_frames_desc, + fusion->reply_frames_desc_phys); + pci_pool_free(fusion->reply_frames_desc_pool, + fusion->reply_frames_desc, + fusion->reply_frames_desc_phys); + pci_pool_destroy(fusion->reply_frames_desc_pool); + +fail_reply_desc: + dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz, + fusion->req_frames_desc, + fusion->req_frames_desc_phys); +fail_req_desc: + return -ENOMEM; +} + +/** + * wait_and_poll - Issues a polling command + * @instance: Adapter soft state + * @cmd: Command packet to be issued + * + * For polling, MFI requires the cmd_status to be set to 0xFF before posting. + */ +int +wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, + int seconds) +{ + int i; + struct megasas_header *frame_hdr = &cmd->frame->hdr; + + u32 msecs = seconds * 1000; + + /* + * Wait for cmd_status to change + */ + for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { + rmb(); + msleep(20); + } + + if (frame_hdr->cmd_status == 0xff) + return -ETIME; + + return 0; +} + +/** + * megasas_ioc_init_fusion - Initializes the FW + * @instance: Adapter soft state + * + * Issues the IOC Init cmd + */ +int +megasas_ioc_init_fusion(struct megasas_instance *instance) +{ + struct megasas_init_frame *init_frame; + struct MPI2_IOC_INIT_REQUEST *IOCInitMessage; + dma_addr_t ioc_init_handle; + struct megasas_cmd *cmd; + u8 ret; + struct fusion_context *fusion; + union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; + int i; + struct megasas_header *frame_hdr; + + fusion = instance->ctrl_context; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_ERR "Could not allocate cmd for INIT Frame\n"); + ret = 1; + goto fail_get_cmd; + } + + IOCInitMessage = + dma_alloc_coherent(&instance->pdev->dev, + sizeof(struct MPI2_IOC_INIT_REQUEST), + &ioc_init_handle, GFP_KERNEL); + + if (!IOCInitMessage) { + printk(KERN_ERR "Could not allocate memory for " + "IOCInitMessage\n"); + ret = 1; + goto fail_fw_init; + } + + memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); + + IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; + IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; + IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); + IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); + IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); + + IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); + IOCInitMessage->ReplyDescriptorPostQueueAddress = cpu_to_le64(fusion->reply_frames_desc_phys); + IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); + IOCInitMessage->HostMSIxVectors = instance->msix_vectors; + init_frame = (struct megasas_init_frame *)cmd->frame; + memset(init_frame, 0, MEGAMFI_FRAME_SIZE); + + frame_hdr = &cmd->frame->hdr; + frame_hdr->cmd_status = 0xFF; + frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); + + init_frame->cmd = MFI_CMD_INIT; + init_frame->cmd_status = 0xFF; + + /* driver support Extended MSIX */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + init_frame->driver_operations. + mfi_capabilities.support_additional_msix = 1; + /* driver supports HA / Remote LUN over Fast Path interface */ + init_frame->driver_operations.mfi_capabilities.support_fp_remote_lun + = 1; + /* Convert capability to LE32 */ + cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); + + init_frame->queue_info_new_phys_addr_hi = + cpu_to_le32(upper_32_bits(ioc_init_handle)); + init_frame->queue_info_new_phys_addr_lo = + cpu_to_le32(lower_32_bits(ioc_init_handle)); + init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); + + req_desc.Words = 0; + req_desc.MFAIo.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + cpu_to_le32s((u32 *)&req_desc.MFAIo); + req_desc.Words |= cpu_to_le64(cmd->frame_phys_addr); + + /* + * disable the intr before firing the init frame + */ + instance->instancet->disable_intr(instance); + + for (i = 0; i < (10 * 1000); i += 20) { + if (readl(&instance->reg_set->doorbell) & 1) + msleep(20); + else + break; + } + + instance->instancet->fire_cmd(instance, req_desc.u.low, + req_desc.u.high, instance->reg_set); + + wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS); + + frame_hdr = &cmd->frame->hdr; + if (frame_hdr->cmd_status != 0) { + ret = 1; + goto fail_fw_init; + } + printk(KERN_ERR "megasas:IOC Init cmd success\n"); + + ret = 0; + +fail_fw_init: + megasas_return_cmd(instance, cmd); + if (IOCInitMessage) + dma_free_coherent(&instance->pdev->dev, + sizeof(struct MPI2_IOC_INIT_REQUEST), + IOCInitMessage, ioc_init_handle); +fail_get_cmd: + return ret; +} + +/* + * megasas_get_ld_map_info - Returns FW's ld_map structure + * @instance: Adapter soft state + * @pend: Pend the command or not + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_ld_map_info(struct megasas_instance *instance) +{ + int ret = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_FW_RAID_MAP_ALL *ci; + dma_addr_t ci_h = 0; + u32 size_map_info; + struct fusion_context *fusion; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n"); + return -ENOMEM; + } + + fusion = instance->ctrl_context; + + if (!fusion) { + megasas_return_cmd(instance, cmd); + return -ENXIO; + } + + dcmd = &cmd->frame->dcmd; + + size_map_info = sizeof(struct MR_FW_RAID_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); + + ci = fusion->ld_map[(instance->map_id & 1)]; + ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(size_map_info); + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info); + + if (!megasas_issue_polled(instance, cmd)) + ret = 0; + else { + printk(KERN_ERR "megasas: Get LD Map Info Failed\n"); + ret = -1; + } + + megasas_return_cmd(instance, cmd); + + return ret; +} + +u8 +megasas_get_map_info(struct megasas_instance *instance) +{ + struct fusion_context *fusion = instance->ctrl_context; + + fusion->fast_path_io = 0; + if (!megasas_get_ld_map_info(instance)) { + if (MR_ValidateMapInfo(instance)) { + fusion->fast_path_io = 1; + return 0; + } + } + return 1; +} + +/* + * megasas_sync_map_info - Returns FW's ld_map structure + * @instance: Adapter soft state + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +int +megasas_sync_map_info(struct megasas_instance *instance) +{ + int ret = 0, i; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + u32 size_sync_info, num_lds; + struct fusion_context *fusion; + struct MR_LD_TARGET_SYNC *ci = NULL; + struct MR_FW_RAID_MAP_ALL *map; + struct MR_LD_RAID *raid; + struct MR_LD_TARGET_SYNC *ld_sync; + dma_addr_t ci_h = 0; + u32 size_map_info; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas: Failed to get cmd for sync" + "info.\n"); + return -ENOMEM; + } + + fusion = instance->ctrl_context; + + if (!fusion) { + megasas_return_cmd(instance, cmd); + return 1; + } + + map = fusion->ld_map[instance->map_id & 1]; + + num_lds = le32_to_cpu(map->raidMap.ldCount); + + dcmd = &cmd->frame->dcmd; + + size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + ci = (struct MR_LD_TARGET_SYNC *) + fusion->ld_map[(instance->map_id - 1) & 1]; + memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL)); + + ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; + + ld_sync = (struct MR_LD_TARGET_SYNC *)ci; + + for (i = 0; i < num_lds; i++, ld_sync++) { + raid = MR_LdRaidGet(i, map); + ld_sync->targetId = MR_GetLDTgtId(i, map); + ld_sync->seqNum = raid->seqNum; + } + + size_map_info = sizeof(struct MR_FW_RAID_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(size_map_info); + dcmd->mbox.b[0] = num_lds; + dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); + dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); + dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info); + + instance->map_update_cmd = cmd; + + instance->instancet->issue_dcmd(instance, cmd); + + return ret; +} + +/* + * meagasas_display_intel_branding - Display branding string + * @instance: per adapter object + * + * Return nothing. + */ +static void +megasas_display_intel_branding(struct megasas_instance *instance) +{ + if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) + return; + + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_INVADER: + switch (instance->pdev->subsystem_device) { + case MEGARAID_INTEL_RS3DC080_SSDID: + dev_info(&instance->pdev->dev, "scsi host %d: %s\n", + instance->host->host_no, + MEGARAID_INTEL_RS3DC080_BRANDING); + break; + case MEGARAID_INTEL_RS3DC040_SSDID: + dev_info(&instance->pdev->dev, "scsi host %d: %s\n", + instance->host->host_no, + MEGARAID_INTEL_RS3DC040_BRANDING); + break; + case MEGARAID_INTEL_RS3SC008_SSDID: + dev_info(&instance->pdev->dev, "scsi host %d: %s\n", + instance->host->host_no, + MEGARAID_INTEL_RS3SC008_BRANDING); + break; + case MEGARAID_INTEL_RS3MC044_SSDID: + dev_info(&instance->pdev->dev, "scsi host %d: %s\n", + instance->host->host_no, + MEGARAID_INTEL_RS3MC044_BRANDING); + break; + default: + break; + } + break; + case PCI_DEVICE_ID_LSI_FURY: + switch (instance->pdev->subsystem_device) { + case MEGARAID_INTEL_RS3WC080_SSDID: + dev_info(&instance->pdev->dev, "scsi host %d: %s\n", + instance->host->host_no, + MEGARAID_INTEL_RS3WC080_BRANDING); + break; + case MEGARAID_INTEL_RS3WC040_SSDID: + dev_info(&instance->pdev->dev, "scsi host %d: %s\n", + instance->host->host_no, + MEGARAID_INTEL_RS3WC040_BRANDING); + break; + default: + break; + } + break; + default: + break; + } +} + +/** + * megasas_init_adapter_fusion - Initializes the FW + * @instance: Adapter soft state + * + * This is the main function for initializing firmware. + */ +u32 +megasas_init_adapter_fusion(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *reg_set; + struct fusion_context *fusion; + u32 max_cmd; + int i = 0, count; + + fusion = instance->ctrl_context; + + reg_set = instance->reg_set; + + /* + * Get various operational parameters from status register + */ + instance->max_fw_cmds = + instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; + instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008); + + /* + * Reduce the max supported cmds by 1. This is to ensure that the + * reply_q_sz (1 more than the max cmd that driver may send) + * does not exceed max cmds that the FW can support + */ + instance->max_fw_cmds = instance->max_fw_cmds-1; + /* Only internal cmds (DCMD) need to have MFI frames */ + instance->max_mfi_cmds = MEGASAS_INT_CMDS; + + max_cmd = instance->max_fw_cmds; + + fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16; + + fusion->request_alloc_sz = + sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd; + fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) + *(fusion->reply_q_depth); + fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + + (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * + (max_cmd + 1)); /* Extra 1 for SMID 0 */ + + fusion->max_sge_in_main_msg = + (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - + offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; + + fusion->max_sge_in_chain = + MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION); + + instance->max_num_sge = fusion->max_sge_in_main_msg + + fusion->max_sge_in_chain - 2; + + /* Used for pass thru MFI frame (DCMD) */ + fusion->chain_offset_mfi_pthru = + offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; + + fusion->chain_offset_io_request = + (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - + sizeof(union MPI2_SGE_IO_UNION))/16; + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + for (i = 0 ; i < count; i++) + fusion->last_reply_idx[i] = 0; + + /* + * Allocate memory for descriptors + * Create a pool of commands + */ + if (megasas_alloc_cmds(instance)) + goto fail_alloc_mfi_cmds; + if (megasas_alloc_cmds_fusion(instance)) + goto fail_alloc_cmds; + + if (megasas_ioc_init_fusion(instance)) + goto fail_ioc_init; + + megasas_display_intel_branding(instance); + + instance->flag_ieee = 1; + + fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) + + (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1)); + + fusion->fast_path_io = 0; + + for (i = 0; i < 2; i++) { + fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, + fusion->map_sz, + &fusion->ld_map_phys[i], + GFP_KERNEL); + if (!fusion->ld_map[i]) { + printk(KERN_ERR "megasas: Could not allocate memory " + "for map info\n"); + goto fail_map_info; + } + } + + if (!megasas_get_map_info(instance)) + megasas_sync_map_info(instance); + + return 0; + +fail_map_info: + if (i == 1) + dma_free_coherent(&instance->pdev->dev, fusion->map_sz, + fusion->ld_map[0], fusion->ld_map_phys[0]); +fail_ioc_init: + megasas_free_cmds_fusion(instance); +fail_alloc_cmds: + megasas_free_cmds(instance); +fail_alloc_mfi_cmds: + return 1; +} + +/** + * megasas_fire_cmd_fusion - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +void +megasas_fire_cmd_fusion(struct megasas_instance *instance, + dma_addr_t req_desc_lo, + u32 req_desc_hi, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->hba_lock, flags); + + writel(le32_to_cpu(req_desc_lo), &(regs)->inbound_low_queue_port); + writel(le32_to_cpu(req_desc_hi), &(regs)->inbound_high_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * map_cmd_status - Maps FW cmd status to OS cmd status + * @cmd : Pointer to cmd + * @status : status of cmd returned by FW + * @ext_status : ext status of cmd returned by FW + */ + +void +map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status) +{ + + switch (status) { + + case MFI_STAT_OK: + cmd->scmd->result = DID_OK << 16; + break; + + case MFI_STAT_SCSI_IO_FAILED: + case MFI_STAT_LD_INIT_IN_PROGRESS: + cmd->scmd->result = (DID_ERROR << 16) | ext_status; + break; + + case MFI_STAT_SCSI_DONE_WITH_ERROR: + + cmd->scmd->result = (DID_OK << 16) | ext_status; + if (ext_status == SAM_STAT_CHECK_CONDITION) { + memset(cmd->scmd->sense_buffer, 0, + SCSI_SENSE_BUFFERSIZE); + memcpy(cmd->scmd->sense_buffer, cmd->sense, + SCSI_SENSE_BUFFERSIZE); + cmd->scmd->result |= DRIVER_SENSE << 24; + } + break; + + case MFI_STAT_LD_OFFLINE: + case MFI_STAT_DEVICE_NOT_FOUND: + cmd->scmd->result = DID_BAD_TARGET << 16; + break; + case MFI_STAT_CONFIG_SEQ_MISMATCH: + cmd->scmd->result = DID_IMM_RETRY << 16; + break; + default: + printk(KERN_DEBUG "megasas: FW status %#x\n", status); + cmd->scmd->result = DID_ERROR << 16; + break; + } +} + +/** + * megasas_make_sgl_fusion - Prepares 32-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @sgl_ptr: SGL to be filled in + * @cmd: cmd we are working on + * + * If successful, this function returns the number of SG elements. + */ +static int +megasas_make_sgl_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scp, + struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, + struct megasas_cmd_fusion *cmd) +{ + int i, sg_processed, sge_count; + struct scatterlist *os_sgl; + struct fusion_context *fusion; + + fusion = instance->ctrl_context; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; + sgl_ptr_end += fusion->max_sge_in_main_msg - 1; + sgl_ptr_end->Flags = 0; + } + + sge_count = scsi_dma_map(scp); + + BUG_ON(sge_count < 0); + + if (sge_count > instance->max_num_sge || !sge_count) + return sge_count; + + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); + sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); + sgl_ptr->Flags = 0; + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + if (i == sge_count - 1) + sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; + } + sgl_ptr++; + + sg_processed = i + 1; + + if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && + (sge_count > fusion->max_sge_in_main_msg)) { + + struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FURY)) { + if ((le16_to_cpu(cmd->io_request->IoFlags) & + MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != + MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) + cmd->io_request->ChainOffset = + fusion-> + chain_offset_io_request; + else + cmd->io_request->ChainOffset = 0; + } else + cmd->io_request->ChainOffset = + fusion->chain_offset_io_request; + + sg_chain = sgl_ptr; + /* Prepare chain element */ + sg_chain->NextChainOffset = 0; + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_FURY)) + sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; + else + sg_chain->Flags = + (IEEE_SGE_FLAGS_CHAIN_ELEMENT | + MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); + sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); + sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); + + sgl_ptr = + (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; + } + } + + return sge_count; +} + +/** + * megasas_set_pd_lba - Sets PD LBA + * @cdb: CDB + * @cdb_len: cdb length + * @start_blk: Start block of IO + * + * Used to set the PD LBA in CDB for FP IOs + */ +void +megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, + struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, + struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) +{ + struct MR_LD_RAID *raid; + u32 ld; + u64 start_blk = io_info->pdBlock; + u8 *cdb = io_request->CDB.CDB32; + u32 num_blocks = io_info->numBlocks; + u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; + + /* Check if T10 PI (DIF) is enabled for this LD */ + ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); + raid = MR_LdRaidGet(ld, local_map_ptr); + if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { + memset(cdb, 0, sizeof(io_request->CDB.CDB32)); + cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; + cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; + + if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; + else + cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; + cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; + + /* LBA */ + cdb[12] = (u8)((start_blk >> 56) & 0xff); + cdb[13] = (u8)((start_blk >> 48) & 0xff); + cdb[14] = (u8)((start_blk >> 40) & 0xff); + cdb[15] = (u8)((start_blk >> 32) & 0xff); + cdb[16] = (u8)((start_blk >> 24) & 0xff); + cdb[17] = (u8)((start_blk >> 16) & 0xff); + cdb[18] = (u8)((start_blk >> 8) & 0xff); + cdb[19] = (u8)(start_blk & 0xff); + + /* Logical block reference tag */ + io_request->CDB.EEDP32.PrimaryReferenceTag = + cpu_to_be32(ref_tag); + io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff; + io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ + + /* Transfer length */ + cdb[28] = (u8)((num_blocks >> 24) & 0xff); + cdb[29] = (u8)((num_blocks >> 16) & 0xff); + cdb[30] = (u8)((num_blocks >> 8) & 0xff); + cdb[31] = (u8)(num_blocks & 0xff); + + /* set SCSI IO EEDPFlags */ + if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { + io_request->EEDPFlags = cpu_to_le16( + MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | + MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); + } else { + io_request->EEDPFlags = cpu_to_le16( + MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); + } + io_request->Control |= cpu_to_le32((0x4 << 26)); + io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); + } else { + /* Some drives don't support 16/12 byte CDB's, convert to 10 */ + if (((cdb_len == 12) || (cdb_len == 16)) && + (start_blk <= 0xffffffff)) { + if (cdb_len == 16) { + opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; + flagvals = cdb[1]; + groupnum = cdb[14]; + control = cdb[15]; + } else { + opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; + flagvals = cdb[1]; + groupnum = cdb[10]; + control = cdb[11]; + } + + memset(cdb, 0, sizeof(io_request->CDB.CDB32)); + + cdb[0] = opcode; + cdb[1] = flagvals; + cdb[6] = groupnum; + cdb[9] = control; + + /* Transfer length */ + cdb[8] = (u8)(num_blocks & 0xff); + cdb[7] = (u8)((num_blocks >> 8) & 0xff); + + io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ + cdb_len = 10; + } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { + /* Convert to 16 byte CDB for large LBA's */ + switch (cdb_len) { + case 6: + opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; + control = cdb[5]; + break; + case 10: + opcode = + cdb[0] == READ_10 ? READ_16 : WRITE_16; + flagvals = cdb[1]; + groupnum = cdb[6]; + control = cdb[9]; + break; + case 12: + opcode = + cdb[0] == READ_12 ? READ_16 : WRITE_16; + flagvals = cdb[1]; + groupnum = cdb[10]; + control = cdb[11]; + break; + } + + memset(cdb, 0, sizeof(io_request->CDB.CDB32)); + + cdb[0] = opcode; + cdb[1] = flagvals; + cdb[14] = groupnum; + cdb[15] = control; + + /* Transfer length */ + cdb[13] = (u8)(num_blocks & 0xff); + cdb[12] = (u8)((num_blocks >> 8) & 0xff); + cdb[11] = (u8)((num_blocks >> 16) & 0xff); + cdb[10] = (u8)((num_blocks >> 24) & 0xff); + + io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ + cdb_len = 16; + } + + /* Normal case, just load LBA here */ + switch (cdb_len) { + case 6: + { + u8 val = cdb[1] & 0xE0; + cdb[3] = (u8)(start_blk & 0xff); + cdb[2] = (u8)((start_blk >> 8) & 0xff); + cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); + break; + } + case 10: + cdb[5] = (u8)(start_blk & 0xff); + cdb[4] = (u8)((start_blk >> 8) & 0xff); + cdb[3] = (u8)((start_blk >> 16) & 0xff); + cdb[2] = (u8)((start_blk >> 24) & 0xff); + break; + case 12: + cdb[5] = (u8)(start_blk & 0xff); + cdb[4] = (u8)((start_blk >> 8) & 0xff); + cdb[3] = (u8)((start_blk >> 16) & 0xff); + cdb[2] = (u8)((start_blk >> 24) & 0xff); + break; + case 16: + cdb[9] = (u8)(start_blk & 0xff); + cdb[8] = (u8)((start_blk >> 8) & 0xff); + cdb[7] = (u8)((start_blk >> 16) & 0xff); + cdb[6] = (u8)((start_blk >> 24) & 0xff); + cdb[5] = (u8)((start_blk >> 32) & 0xff); + cdb[4] = (u8)((start_blk >> 40) & 0xff); + cdb[3] = (u8)((start_blk >> 48) & 0xff); + cdb[2] = (u8)((start_blk >> 56) & 0xff); + break; + } + } +} + +/** + * megasas_build_ldio_fusion - Prepares IOs to devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Prepares the io_request and chain elements (sg_frame) for IO + * The IO can be for PD (Fast Path) or LD + */ +void +megasas_build_ldio_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scp, + struct megasas_cmd_fusion *cmd) +{ + u8 fp_possible; + u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; + struct MPI2_RAID_SCSI_IO_REQUEST *io_request; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + struct IO_REQUEST_INFO io_info; + struct fusion_context *fusion; + struct MR_FW_RAID_MAP_ALL *local_map_ptr; + u8 *raidLUN; + + device_id = MEGASAS_DEV_INDEX(instance, scp); + + fusion = instance->ctrl_context; + + io_request = cmd->io_request; + io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id); + io_request->RaidContext.status = 0; + io_request->RaidContext.exStatus = 0; + + req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; + + start_lba_lo = 0; + start_lba_hi = 0; + fp_possible = 0; + + /* + * 6-byte READ(0x08) or WRITE(0x0A) cdb + */ + if (scp->cmd_len == 6) { + datalength = (u32) scp->cmnd[4]; + start_lba_lo = ((u32) scp->cmnd[1] << 16) | + ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; + + start_lba_lo &= 0x1FFFFF; + } + + /* + * 10-byte READ(0x28) or WRITE(0x2A) cdb + */ + else if (scp->cmd_len == 10) { + datalength = (u32) scp->cmnd[8] | + ((u32) scp->cmnd[7] << 8); + start_lba_lo = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + /* + * 12-byte READ(0xA8) or WRITE(0xAA) cdb + */ + else if (scp->cmd_len == 12) { + datalength = ((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; + start_lba_lo = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + /* + * 16-byte READ(0x88) or WRITE(0x8A) cdb + */ + else if (scp->cmd_len == 16) { + datalength = ((u32) scp->cmnd[10] << 24) | + ((u32) scp->cmnd[11] << 16) | + ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; + start_lba_lo = ((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; + + start_lba_hi = ((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; + } + + memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); + io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; + io_info.numBlocks = datalength; + io_info.ldTgtId = device_id; + io_request->DataLength = cpu_to_le32(scsi_bufflen(scp)); + + if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + io_info.isRead = 1; + + local_map_ptr = fusion->ld_map[(instance->map_id & 1)]; + + if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >= + MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) { + io_request->RaidContext.regLockFlags = 0; + fp_possible = 0; + } else { + if (MR_BuildRaidContext(instance, &io_info, + &io_request->RaidContext, + local_map_ptr, &raidLUN)) + fp_possible = io_info.fpOkForIo; + } + + /* Use smp_processor_id() for now until cmd->request->cpu is CPU + id by default, not CPU group id, otherwise all MSI-X queues won't + be utilized */ + cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? + smp_processor_id() % instance->msix_vectors : 0; + + if (fp_possible) { + megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, + local_map_ptr, start_lba_lo); + io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY + << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + if (io_request->RaidContext.regLockFlags == + REGION_TYPE_UNUSED) + cmd->request_desc->SCSIIO.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + io_request->RaidContext.Type = MPI2_TYPE_CUDA; + io_request->RaidContext.nseg = 0x1; + io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); + io_request->RaidContext.regLockFlags |= + (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | + MR_RL_FLAGS_SEQ_NUM_ENABLE); + } + if ((fusion->load_balance_info[device_id].loadBalanceFlag) && + (io_info.isRead)) { + io_info.devHandle = + get_updated_dev_handle( + &fusion->load_balance_info[device_id], + &io_info); + scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; + } else + scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; + cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; + io_request->DevHandle = io_info.devHandle; + /* populate the LUN field */ + memcpy(io_request->LUN, raidLUN, 8); + } else { + io_request->RaidContext.timeoutValue = + cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); + cmd->request_desc->SCSIIO.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO + << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + if (io_request->RaidContext.regLockFlags == + REGION_TYPE_UNUSED) + cmd->request_desc->SCSIIO.RequestFlags = + (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + io_request->RaidContext.Type = MPI2_TYPE_CUDA; + io_request->RaidContext.regLockFlags |= + (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | + MR_RL_FLAGS_SEQ_NUM_ENABLE); + io_request->RaidContext.nseg = 0x1; + } + io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; + io_request->DevHandle = cpu_to_le16(device_id); + } /* Not FP */ +} + +/** + * megasas_build_dcdb_fusion - Prepares IOs to devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Prepares the io_request frame for non-io cmds + */ +static void +megasas_build_dcdb_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scmd, + struct megasas_cmd_fusion *cmd) +{ + u32 device_id; + struct MPI2_RAID_SCSI_IO_REQUEST *io_request; + u16 pd_index = 0; + struct MR_FW_RAID_MAP_ALL *local_map_ptr; + struct fusion_context *fusion = instance->ctrl_context; + u8 span, physArm; + u16 devHandle; + u32 ld, arRef, pd; + struct MR_LD_RAID *raid; + struct RAID_CONTEXT *pRAID_Context; + + io_request = cmd->io_request; + device_id = MEGASAS_DEV_INDEX(instance, scmd); + pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + +scmd->device->id; + local_map_ptr = fusion->ld_map[(instance->map_id & 1)]; + + io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); + + + /* Check if this is a system PD I/O */ + if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS && + instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) { + io_request->Function = 0; + if (fusion->fast_path_io) + io_request->DevHandle = + local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; + io_request->RaidContext.timeoutValue = + local_map_ptr->raidMap.fpPdIoTimeoutSec; + io_request->RaidContext.regLockFlags = 0; + io_request->RaidContext.regLockRowLBA = 0; + io_request->RaidContext.regLockLength = 0; + io_request->RaidContext.RAIDFlags = + MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD << + MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + io_request->IoFlags |= cpu_to_le16( + MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + cmd->request_desc->SCSIIO.DevHandle = + local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; + cmd->request_desc->SCSIIO.MSIxIndex = + instance->msix_vectors ? smp_processor_id() % instance->msix_vectors : 0; + /* + * If the command is for the tape device, set the + * FP timeout to the os layer timeout value. + */ + if (scmd->device->type == TYPE_TAPE) { + if ((scmd->request->timeout / HZ) > 0xFFFF) + io_request->RaidContext.timeoutValue = + 0xFFFF; + else + io_request->RaidContext.timeoutValue = + scmd->request->timeout / HZ; + } + } else { + if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS) + goto NonFastPath; + + ld = MR_TargetIdToLdGet(device_id, local_map_ptr); + if ((ld >= MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) + goto NonFastPath; + + raid = MR_LdRaidGet(ld, local_map_ptr); + + /* check if this LD is FP capable */ + if (!(raid->capability.fpNonRWCapable)) + /* not FP capable, send as non-FP */ + goto NonFastPath; + + /* get RAID_Context pointer */ + pRAID_Context = &io_request->RaidContext; + + /* set RAID context values */ + pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ; + pRAID_Context->timeoutValue = raid->fpIoTimeoutForLd; + pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id); + pRAID_Context->regLockRowLBA = 0; + pRAID_Context->regLockLength = 0; + pRAID_Context->configSeqNum = raid->seqNum; + + /* get the DevHandle for the PD (since this is + fpNonRWCapable, this is a single disk RAID0) */ + span = physArm = 0; + arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); + pd = MR_ArPdGet(arRef, physArm, local_map_ptr); + devHandle = MR_PdDevHandleGet(pd, local_map_ptr); + + /* build request descriptor */ + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + cmd->request_desc->SCSIIO.DevHandle = devHandle; + + /* populate the LUN field */ + memcpy(io_request->LUN, raid->LUN, 8); + + /* build the raidScsiIO structure */ + io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; + io_request->DevHandle = devHandle; + + return; + +NonFastPath: + io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; + io_request->DevHandle = cpu_to_le16(device_id); + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + } + io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id); + io_request->LUN[1] = scmd->device->lun; +} + +/** + * megasas_build_io_fusion - Prepares IOs to devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Invokes helper functions to prepare request frames + * and sets flags appropriate for IO/Non-IO cmd + */ +int +megasas_build_io_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scp, + struct megasas_cmd_fusion *cmd) +{ + u32 device_id, sge_count; + struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; + + device_id = MEGASAS_DEV_INDEX(instance, scp); + + /* Zero out some fields so they don't get reused */ + io_request->LUN[1] = 0; + io_request->CDB.EEDP32.PrimaryReferenceTag = 0; + io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; + io_request->EEDPFlags = 0; + io_request->Control = 0; + io_request->EEDPBlockSize = 0; + io_request->ChainOffset = 0; + io_request->RaidContext.RAIDFlags = 0; + io_request->RaidContext.Type = 0; + io_request->RaidContext.nseg = 0; + + memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); + /* + * Just the CDB length,rest of the Flags are zero + * This will be modified for FP in build_ldio_fusion + */ + io_request->IoFlags = cpu_to_le16(scp->cmd_len); + + if (megasas_is_ldio(scp)) + megasas_build_ldio_fusion(instance, scp, cmd); + else + megasas_build_dcdb_fusion(instance, scp, cmd); + + /* + * Construct SGL + */ + + sge_count = + megasas_make_sgl_fusion(instance, scp, + (struct MPI25_IEEE_SGE_CHAIN64 *) + &io_request->SGL, cmd); + + if (sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds " + "max (0x%x) allowed\n", sge_count, + instance->max_num_sge); + return 1; + } + + io_request->RaidContext.numSGE = sge_count; + + io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); + + if (scp->sc_data_direction == PCI_DMA_TODEVICE) + io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); + else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) + io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); + + io_request->SGLOffset0 = + offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; + + io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr); + io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; + + cmd->scmd = scp; + scp->SCp.ptr = (char *)cmd; + + return 0; +} + +union MEGASAS_REQUEST_DESCRIPTOR_UNION * +megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) +{ + u8 *p; + struct fusion_context *fusion; + + if (index >= instance->max_fw_cmds) { + printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for " + "descriptor for scsi%d\n", index, + instance->host->host_no); + return NULL; + } + fusion = instance->ctrl_context; + p = fusion->req_frames_desc + +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index; + + return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; +} + +/** + * megasas_build_and_issue_cmd_fusion -Main routine for building and + * issuing non IOCTL cmd + * @instance: Adapter soft state + * @scmd: pointer to scsi cmd from OS + */ +static u32 +megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, + struct scsi_cmnd *scmd) +{ + struct megasas_cmd_fusion *cmd; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + u32 index; + struct fusion_context *fusion; + + fusion = instance->ctrl_context; + + cmd = megasas_get_cmd_fusion(instance); + if (!cmd) + return SCSI_MLQUEUE_HOST_BUSY; + + index = cmd->index; + + req_desc = megasas_get_request_descriptor(instance, index-1); + if (!req_desc) + return 1; + + req_desc->Words = 0; + cmd->request_desc = req_desc; + + if (megasas_build_io_fusion(instance, scmd, cmd)) { + megasas_return_cmd_fusion(instance, cmd); + printk(KERN_ERR "megasas: Error building command.\n"); + cmd->request_desc = NULL; + return 1; + } + + req_desc = cmd->request_desc; + req_desc->SCSIIO.SMID = cpu_to_le16(index); + + if (cmd->io_request->ChainOffset != 0 && + cmd->io_request->ChainOffset != 0xF) + printk(KERN_ERR "megasas: The chain offset value is not " + "correct : %x\n", cmd->io_request->ChainOffset); + + /* + * Issue the command to the FW + */ + atomic_inc(&instance->fw_outstanding); + + instance->instancet->fire_cmd(instance, + req_desc->u.low, req_desc->u.high, + instance->reg_set); + + return 0; +} + +/** + * complete_cmd_fusion - Completes command + * @instance: Adapter soft state + * Completes all commands that is in reply descriptor queue + */ +int +complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) +{ + union MPI2_REPLY_DESCRIPTORS_UNION *desc; + struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; + struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; + struct fusion_context *fusion; + struct megasas_cmd *cmd_mfi; + struct megasas_cmd_fusion *cmd_fusion; + u16 smid, num_completed; + u8 reply_descript_type, arm; + u32 status, extStatus, device_id; + union desc_value d_val; + struct LD_LOAD_BALANCE_INFO *lbinfo; + + fusion = instance->ctrl_context; + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) + return IRQ_HANDLED; + + desc = fusion->reply_frames_desc; + desc += ((MSIxIndex * fusion->reply_alloc_sz)/ + sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) + + fusion->last_reply_idx[MSIxIndex]; + + reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; + + d_val.word = desc->Words; + + reply_descript_type = reply_desc->ReplyFlags & + MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + + if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) + return IRQ_NONE; + + num_completed = 0; + + while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) { + smid = le16_to_cpu(reply_desc->SMID); + + cmd_fusion = fusion->cmd_list[smid - 1]; + + scsi_io_req = + (struct MPI2_RAID_SCSI_IO_REQUEST *) + cmd_fusion->io_request; + + if (cmd_fusion->scmd) + cmd_fusion->scmd->SCp.ptr = NULL; + + status = scsi_io_req->RaidContext.status; + extStatus = scsi_io_req->RaidContext.exStatus; + + switch (scsi_io_req->Function) { + case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ + /* Update load balancing info */ + device_id = MEGASAS_DEV_INDEX(instance, + cmd_fusion->scmd); + lbinfo = &fusion->load_balance_info[device_id]; + if (cmd_fusion->scmd->SCp.Status & + MEGASAS_LOAD_BALANCE_FLAG) { + arm = lbinfo->raid1DevHandle[0] == + cmd_fusion->io_request->DevHandle ? 0 : + 1; + atomic_dec(&lbinfo->scsi_pending_cmds[arm]); + cmd_fusion->scmd->SCp.Status &= + ~MEGASAS_LOAD_BALANCE_FLAG; + } + if (reply_descript_type == + MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) { + if (megasas_dbg_lvl == 5) + printk(KERN_ERR "\nmegasas: FAST Path " + "IO Success\n"); + } + /* Fall thru and complete IO */ + case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ + /* Map the FW Cmd Status */ + map_cmd_status(cmd_fusion, status, extStatus); + scsi_dma_unmap(cmd_fusion->scmd); + cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); + scsi_io_req->RaidContext.status = 0; + scsi_io_req->RaidContext.exStatus = 0; + megasas_return_cmd_fusion(instance, cmd_fusion); + atomic_dec(&instance->fw_outstanding); + + break; + case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ + cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; + megasas_complete_cmd(instance, cmd_mfi, DID_OK); + cmd_fusion->flags = 0; + megasas_return_cmd_fusion(instance, cmd_fusion); + + break; + } + + fusion->last_reply_idx[MSIxIndex]++; + if (fusion->last_reply_idx[MSIxIndex] >= + fusion->reply_q_depth) + fusion->last_reply_idx[MSIxIndex] = 0; + + desc->Words = ULLONG_MAX; + num_completed++; + + /* Get the next reply descriptor */ + if (!fusion->last_reply_idx[MSIxIndex]) + desc = fusion->reply_frames_desc + + ((MSIxIndex * fusion->reply_alloc_sz)/ + sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)); + else + desc++; + + reply_desc = + (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; + + d_val.word = desc->Words; + + reply_descript_type = reply_desc->ReplyFlags & + MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + + if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) + break; + } + + if (!num_completed) + return IRQ_NONE; + + wmb(); + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) + writel(((MSIxIndex & 0x7) << 24) | + fusion->last_reply_idx[MSIxIndex], + instance->reply_post_host_index_addr[MSIxIndex/8]); + else + writel((MSIxIndex << 24) | + fusion->last_reply_idx[MSIxIndex], + instance->reply_post_host_index_addr[0]); + megasas_check_and_restore_queue_depth(instance); + return IRQ_HANDLED; +} + +/** + * megasas_complete_cmd_dpc_fusion - Completes command + * @instance: Adapter soft state + * + * Tasklet to complete cmds + */ +void +megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) +{ + struct megasas_instance *instance = + (struct megasas_instance *)instance_addr; + unsigned long flags; + u32 count, MSIxIndex; + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + + /* If we have already declared adapter dead, donot complete cmds */ + spin_lock_irqsave(&instance->hba_lock, flags); + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + spin_unlock_irqrestore(&instance->hba_lock, flags); + return; + } + spin_unlock_irqrestore(&instance->hba_lock, flags); + + for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) + complete_cmd_fusion(instance, MSIxIndex); +} + +/** + * megasas_isr_fusion - isr entry point + */ +irqreturn_t megasas_isr_fusion(int irq, void *devp) +{ + struct megasas_irq_context *irq_context = devp; + struct megasas_instance *instance = irq_context->instance; + u32 mfiStatus, fw_state; + + if (instance->mask_interrupts) + return IRQ_NONE; + + if (!instance->msix_vectors) { + mfiStatus = instance->instancet->clear_intr(instance->reg_set); + if (!mfiStatus) + return IRQ_NONE; + } + + /* If we are resetting, bail */ + if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { + instance->instancet->clear_intr(instance->reg_set); + return IRQ_HANDLED; + } + + if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { + instance->instancet->clear_intr(instance->reg_set); + /* If we didn't complete any commands, check for FW fault */ + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + if (fw_state == MFI_STATE_FAULT) { + printk(KERN_WARNING "megaraid_sas: Iop2SysDoorbellInt" + "for scsi%d\n", instance->host->host_no); + schedule_work(&instance->work_init); + } + } + + return IRQ_HANDLED; +} + +/** + * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru + * @instance: Adapter soft state + * mfi_cmd: megasas_cmd pointer + * + */ +u8 +build_mpt_mfi_pass_thru(struct megasas_instance *instance, + struct megasas_cmd *mfi_cmd) +{ + struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; + struct MPI2_RAID_SCSI_IO_REQUEST *io_req; + struct megasas_cmd_fusion *cmd; + struct fusion_context *fusion; + struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; + + cmd = megasas_get_cmd_fusion(instance); + if (!cmd) + return 1; + + /* Save the smid. To be used for returning the cmd */ + mfi_cmd->context.smid = cmd->index; + + cmd->sync_cmd_idx = mfi_cmd->index; + + /* + * For cmds where the flag is set, store the flag and check + * on completion. For cmds with this flag, don't call + * megasas_complete_cmd + */ + + if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE) + cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; + + fusion = instance->ctrl_context; + io_req = cmd->io_request; + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { + struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = + (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; + sgl_ptr_end += fusion->max_sge_in_main_msg - 1; + sgl_ptr_end->Flags = 0; + } + + mpi25_ieee_chain = + (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; + + io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; + io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, + SGL) / 4; + io_req->ChainOffset = fusion->chain_offset_mfi_pthru; + + mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); + + mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | + MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; + + mpi25_ieee_chain->Length = cpu_to_le32(MEGASAS_MAX_SZ_CHAIN_FRAME); + + return 0; +} + +/** + * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd + * @instance: Adapter soft state + * @cmd: mfi cmd to build + * + */ +union MEGASAS_REQUEST_DESCRIPTOR_UNION * +build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + u16 index; + + if (build_mpt_mfi_pass_thru(instance, cmd)) { + printk(KERN_ERR "Couldn't build MFI pass thru cmd\n"); + return NULL; + } + + index = cmd->context.smid; + + req_desc = megasas_get_request_descriptor(instance, index - 1); + + if (!req_desc) + return NULL; + + req_desc->Words = 0; + req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << + MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + + req_desc->SCSIIO.SMID = cpu_to_le16(index); + + return req_desc; +} + +/** + * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd + * @instance: Adapter soft state + * @cmd: mfi cmd pointer + * + */ +void +megasas_issue_dcmd_fusion(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + + req_desc = build_mpt_cmd(instance, cmd); + if (!req_desc) { + printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n"); + return; + } + instance->instancet->fire_cmd(instance, req_desc->u.low, + req_desc->u.high, instance->reg_set); +} + +/** + * megasas_release_fusion - Reverses the FW initialization + * @intance: Adapter soft state + */ +void +megasas_release_fusion(struct megasas_instance *instance) +{ + megasas_free_cmds(instance); + megasas_free_cmds_fusion(instance); + + iounmap(instance->reg_set); + + pci_release_selected_regions(instance->pdev, instance->bar); +} + +/** + * megasas_read_fw_status_reg_fusion - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_adp_reset_fusion - For controller reset + * @regs: MFI register set + */ +static int +megasas_adp_reset_fusion(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + return 0; +} + +/** + * megasas_check_reset_fusion - For controller reset check + * @regs: MFI register set + */ +static int +megasas_check_reset_fusion(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + return 0; +} + +/* This function waits for outstanding commands on fusion to complete */ +int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, + int iotimeout, int *convert) +{ + int i, outstanding, retval = 0, hb_seconds_missed = 0; + u32 fw_state; + + for (i = 0; i < resetwaittime; i++) { + /* Check if firmware is in fault state */ + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + if (fw_state == MFI_STATE_FAULT) { + printk(KERN_WARNING "megasas: Found FW in FAULT state," + " will reset adapter scsi%d.\n", + instance->host->host_no); + retval = 1; + goto out; + } + /* If SR-IOV VF mode & heartbeat timeout, don't wait */ + if (instance->requestorId && !iotimeout) { + retval = 1; + goto out; + } + + /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ + if (instance->requestorId && iotimeout) { + if (instance->hb_host_mem->HB.fwCounter != + instance->hb_host_mem->HB.driverCounter) { + instance->hb_host_mem->HB.driverCounter = + instance->hb_host_mem->HB.fwCounter; + hb_seconds_missed = 0; + } else { + hb_seconds_missed++; + if (hb_seconds_missed == + (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { + printk(KERN_WARNING "megasas: SR-IOV:" + " Heartbeat never completed " + " while polling during I/O " + " timeout handling for " + "scsi%d.\n", + instance->host->host_no); + *convert = 1; + retval = 1; + goto out; + } + } + } + + outstanding = atomic_read(&instance->fw_outstanding); + if (!outstanding) + goto out; + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + printk(KERN_NOTICE "megasas: [%2d]waiting for %d " + "commands to complete for scsi%d\n", i, + outstanding, instance->host->host_no); + megasas_complete_cmd_dpc_fusion( + (unsigned long)instance); + } + msleep(1000); + } + + if (atomic_read(&instance->fw_outstanding)) { + printk("megaraid_sas: pending commands remain after waiting, " + "will reset adapter scsi%d.\n", + instance->host->host_no); + retval = 1; + } +out: + return retval; +} + +void megasas_reset_reply_desc(struct megasas_instance *instance) +{ + int i, count; + struct fusion_context *fusion; + union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; + + fusion = instance->ctrl_context; + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + for (i = 0 ; i < count ; i++) + fusion->last_reply_idx[i] = 0; + reply_desc = fusion->reply_frames_desc; + for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++) + reply_desc->Words = ULLONG_MAX; +} + +/* Check for a second path that is currently UP */ +int megasas_check_mpio_paths(struct megasas_instance *instance, + struct scsi_cmnd *scmd) +{ + int i, j, retval = (DID_RESET << 16); + + if (instance->mpio && instance->requestorId) { + for (i = 0 ; i < MAX_MGMT_ADAPTERS ; i++) + for (j = 0 ; j < MAX_LOGICAL_DRIVES; j++) + if (megasas_mgmt_info.instance[i] && + (megasas_mgmt_info.instance[i] != instance) && + megasas_mgmt_info.instance[i]->mpio && + megasas_mgmt_info.instance[i]->requestorId + && + (megasas_mgmt_info.instance[i]->ld_ids[j] + == scmd->device->id)) { + retval = (DID_NO_CONNECT << 16); + goto out; + } + } +out: + return retval; +} + +/* Core fusion reset function */ +int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout) +{ + int retval = SUCCESS, i, j, retry = 0, convert = 0; + struct megasas_instance *instance; + struct megasas_cmd_fusion *cmd_fusion; + struct fusion_context *fusion; + struct megasas_cmd *cmd_mfi; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + u32 host_diag, abs_state, status_reg, reset_adapter; + + instance = (struct megasas_instance *)shost->hostdata; + fusion = instance->ctrl_context; + + mutex_lock(&instance->reset_mutex); + + if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { + printk(KERN_WARNING "megaraid_sas: Hardware critical error, " + "returning FAILED for scsi%d.\n", + instance->host->host_no); + return FAILED; + } + + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); + set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); + instance->adprecovery = MEGASAS_ADPRESET_SM_POLLING; + instance->instancet->disable_intr(instance); + msleep(1000); + + /* First try waiting for commands to complete */ + if (megasas_wait_for_outstanding_fusion(instance, iotimeout, + &convert)) { + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + printk(KERN_WARNING "megaraid_sas: resetting fusion " + "adapter scsi%d.\n", instance->host->host_no); + if (convert) + iotimeout = 0; + + /* Now return commands back to the OS */ + for (i = 0 ; i < instance->max_fw_cmds; i++) { + cmd_fusion = fusion->cmd_list[i]; + if (cmd_fusion->scmd) { + scsi_dma_unmap(cmd_fusion->scmd); + cmd_fusion->scmd->result = + megasas_check_mpio_paths(instance, + cmd_fusion->scmd); + cmd_fusion->scmd->scsi_done(cmd_fusion->scmd); + megasas_return_cmd_fusion(instance, cmd_fusion); + atomic_dec(&instance->fw_outstanding); + } + } + + status_reg = instance->instancet->read_fw_status_reg( + instance->reg_set); + abs_state = status_reg & MFI_STATE_MASK; + reset_adapter = status_reg & MFI_RESET_ADAPTER; + if (instance->disableOnlineCtrlReset || + (abs_state == MFI_STATE_FAULT && !reset_adapter)) { + /* Reset not supported, kill adapter */ + printk(KERN_WARNING "megaraid_sas: Reset not supported" + ", killing adapter scsi%d.\n", + instance->host->host_no); + megaraid_sas_kill_hba(instance); + instance->skip_heartbeat_timer_del = 1; + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + retval = FAILED; + goto out; + } + + /* Let SR-IOV VF & PF sync up if there was a HB failure */ + if (instance->requestorId && !iotimeout) { + msleep(MEGASAS_OCR_SETTLE_TIME_VF); + /* Look for a late HB update after VF settle time */ + if (abs_state == MFI_STATE_OPERATIONAL && + (instance->hb_host_mem->HB.fwCounter != + instance->hb_host_mem->HB.driverCounter)) { + instance->hb_host_mem->HB.driverCounter = + instance->hb_host_mem->HB.fwCounter; + printk(KERN_WARNING "megasas: SR-IOV:" + "Late FW heartbeat update for " + "scsi%d.\n", + instance->host->host_no); + } else { + /* In VF mode, first poll for FW ready */ + for (i = 0; + i < (MEGASAS_RESET_WAIT_TIME * 1000); + i += 20) { + status_reg = + instance->instancet-> + read_fw_status_reg( + instance->reg_set); + abs_state = status_reg & + MFI_STATE_MASK; + if (abs_state == MFI_STATE_READY) { + printk(KERN_WARNING "megasas" + ": SR-IOV: FW was found" + "to be in ready state " + "for scsi%d.\n", + instance->host->host_no); + break; + } + msleep(20); + } + if (abs_state != MFI_STATE_READY) { + printk(KERN_WARNING "megasas: SR-IOV: " + "FW not in ready state after %d" + " seconds for scsi%d, status_reg = " + "0x%x.\n", + MEGASAS_RESET_WAIT_TIME, + instance->host->host_no, + status_reg); + megaraid_sas_kill_hba(instance); + instance->skip_heartbeat_timer_del = 1; + instance->adprecovery = + MEGASAS_HW_CRITICAL_ERROR; + retval = FAILED; + goto out; + } + } + } + + /* Now try to reset the chip */ + for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { + writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_1ST_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_2ND_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_3RD_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_4TH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_5TH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_6TH_KEY_VALUE, + &instance->reg_set->fusion_seq_offset); + + /* Check that the diag write enable (DRWE) bit is on */ + host_diag = readl(&instance->reg_set->fusion_host_diag); + retry = 0; + while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { + msleep(100); + host_diag = + readl(&instance->reg_set->fusion_host_diag); + if (retry++ == 100) { + printk(KERN_WARNING "megaraid_sas: " + "Host diag unlock failed! " + "for scsi%d\n", + instance->host->host_no); + break; + } + } + if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) + continue; + + /* Send chip reset command */ + writel(host_diag | HOST_DIAG_RESET_ADAPTER, + &instance->reg_set->fusion_host_diag); + msleep(3000); + + /* Make sure reset adapter bit is cleared */ + host_diag = readl(&instance->reg_set->fusion_host_diag); + retry = 0; + while (host_diag & HOST_DIAG_RESET_ADAPTER) { + msleep(100); + host_diag = + readl(&instance->reg_set->fusion_host_diag); + if (retry++ == 1000) { + printk(KERN_WARNING "megaraid_sas: " + "Diag reset adapter never " + "cleared for scsi%d!\n", + instance->host->host_no); + break; + } + } + if (host_diag & HOST_DIAG_RESET_ADAPTER) + continue; + + abs_state = + instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + retry = 0; + + while ((abs_state <= MFI_STATE_FW_INIT) && + (retry++ < 1000)) { + msleep(100); + abs_state = + instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + } + if (abs_state <= MFI_STATE_FW_INIT) { + printk(KERN_WARNING "megaraid_sas: firmware " + "state < MFI_STATE_FW_INIT, state = " + "0x%x for scsi%d\n", abs_state, + instance->host->host_no); + continue; + } + + /* Wait for FW to become ready */ + if (megasas_transition_to_ready(instance, 1)) { + printk(KERN_WARNING "megaraid_sas: Failed to " + "transition controller to ready " + "for scsi%d.\n", + instance->host->host_no); + continue; + } + + megasas_reset_reply_desc(instance); + if (megasas_ioc_init_fusion(instance)) { + printk(KERN_WARNING "megaraid_sas: " + "megasas_ioc_init_fusion() failed!" + " for scsi%d\n", + instance->host->host_no); + continue; + } + + /* Re-fire management commands */ + for (j = 0 ; j < instance->max_fw_cmds; j++) { + cmd_fusion = fusion->cmd_list[j]; + if (cmd_fusion->sync_cmd_idx != + (u32)ULONG_MAX) { + cmd_mfi = + instance-> + cmd_list[cmd_fusion->sync_cmd_idx]; + if (cmd_mfi->frame->dcmd.opcode == + cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) { + megasas_return_cmd(instance, + cmd_mfi); + megasas_return_cmd_fusion( + instance, cmd_fusion); + } else { + req_desc = + megasas_get_request_descriptor( + instance, + cmd_mfi->context.smid + -1); + if (!req_desc) { + printk(KERN_WARNING + "req_desc NULL" + " for scsi%d\n", + instance->host->host_no); + /* Return leaked MPT + frame */ + megasas_return_cmd_fusion(instance, cmd_fusion); + } else { + instance->instancet-> + fire_cmd(instance, + req_desc-> + u.low, + req_desc-> + u.high, + instance-> + reg_set); + } + } + } + } + + clear_bit(MEGASAS_FUSION_IN_RESET, + &instance->reset_flags); + instance->instancet->enable_intr(instance); + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + + /* Reset load balance info */ + memset(fusion->load_balance_info, 0, + sizeof(struct LD_LOAD_BALANCE_INFO) + *MAX_LOGICAL_DRIVES); + + if (!megasas_get_map_info(instance)) + megasas_sync_map_info(instance); + + /* Restart SR-IOV heartbeat */ + if (instance->requestorId) { + if (!megasas_sriov_start_heartbeat(instance, 0)) + megasas_start_timer(instance, + &instance->sriov_heartbeat_timer, + megasas_sriov_heartbeat_handler, + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); + else + instance->skip_heartbeat_timer_del = 1; + } + + /* Adapter reset completed successfully */ + printk(KERN_WARNING "megaraid_sas: Reset " + "successful for scsi%d.\n", + instance->host->host_no); + retval = SUCCESS; + goto out; + } + /* Reset failed, kill the adapter */ + printk(KERN_WARNING "megaraid_sas: Reset failed, killing " + "adapter scsi%d.\n", instance->host->host_no); + megaraid_sas_kill_hba(instance); + instance->skip_heartbeat_timer_del = 1; + instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; + retval = FAILED; + } else { + /* For VF: Restart HB timer if we didn't OCR */ + if (instance->requestorId) { + megasas_start_timer(instance, + &instance->sriov_heartbeat_timer, + megasas_sriov_heartbeat_handler, + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); + } + clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); + instance->instancet->enable_intr(instance); + instance->adprecovery = MEGASAS_HBA_OPERATIONAL; + } +out: + clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); + mutex_unlock(&instance->reset_mutex); + return retval; +} + +/* Fusion OCR work queue */ +void megasas_fusion_ocr_wq(struct work_struct *work) +{ + struct megasas_instance *instance = + container_of(work, struct megasas_instance, work_init); + + megasas_reset_fusion(instance->host, 0); +} + +struct megasas_instance_template megasas_instance_template_fusion = { + .fire_cmd = megasas_fire_cmd_fusion, + .enable_intr = megasas_enable_intr_fusion, + .disable_intr = megasas_disable_intr_fusion, + .clear_intr = megasas_clear_intr_fusion, + .read_fw_status_reg = megasas_read_fw_status_reg_fusion, + .adp_reset = megasas_adp_reset_fusion, + .check_reset = megasas_check_reset_fusion, + .service_isr = megasas_isr_fusion, + .tasklet = megasas_complete_cmd_dpc_fusion, + .init_adapter = megasas_init_adapter_fusion, + .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, + .issue_dcmd = megasas_issue_dcmd_fusion, +}; diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h new file mode 100644 index 00000000000..e76af5459a0 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -0,0 +1,766 @@ +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2009-2012 LSI Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * FILE: megaraid_sas_fusion.h + * + * Authors: LSI Corporation + * Manoj Jose + * Sumant Patro + * + * Send feedback to: <megaraidlinux@lsi.com> + * + * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 + * ATTN: Linuxraid + */ + +#ifndef _MEGARAID_SAS_FUSION_H_ +#define _MEGARAID_SAS_FUSION_H_ + +/* Fusion defines */ +#define MEGASAS_MAX_SZ_CHAIN_FRAME 1024 +#define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000009) +#define MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 256 +#define MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST 0xF0 +#define MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST 0xF1 +#define MEGASAS_LOAD_BALANCE_FLAG 0x1 +#define MEGASAS_DCMD_MBOX_PEND_FLAG 0x1 +#define HOST_DIAG_WRITE_ENABLE 0x80 +#define HOST_DIAG_RESET_ADAPTER 0x4 +#define MEGASAS_FUSION_MAX_RESET_TRIES 3 +#define MAX_MSIX_QUEUES_FUSION 128 + +/* Invader defines */ +#define MPI2_TYPE_CUDA 0x2 +#define MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH 0x4000 +#define MR_RL_FLAGS_GRANT_DESTINATION_CPU0 0x00 +#define MR_RL_FLAGS_GRANT_DESTINATION_CPU1 0x10 +#define MR_RL_FLAGS_GRANT_DESTINATION_CUDA 0x80 +#define MR_RL_FLAGS_SEQ_NUM_ENABLE 0x8 + +/* T10 PI defines */ +#define MR_PROT_INFO_TYPE_CONTROLLER 0x8 +#define MEGASAS_SCSI_VARIABLE_LENGTH_CMD 0x7f +#define MEGASAS_SCSI_SERVICE_ACTION_READ32 0x9 +#define MEGASAS_SCSI_SERVICE_ACTION_WRITE32 0xB +#define MEGASAS_SCSI_ADDL_CDB_LEN 0x18 +#define MEGASAS_RD_WR_PROTECT_CHECK_ALL 0x20 +#define MEGASAS_RD_WR_PROTECT_CHECK_NONE 0x60 + +#define MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET (0x0000030C) +#define MPI2_REPLY_POST_HOST_INDEX_OFFSET (0x0000006C) + +/* + * Raid context flags + */ + +#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT 0x4 +#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_MASK 0x30 +enum MR_RAID_FLAGS_IO_SUB_TYPE { + MR_RAID_FLAGS_IO_SUB_TYPE_NONE = 0, + MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD = 1, +}; + +/* + * Request descriptor types + */ +#define MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 0x7 +#define MEGASAS_REQ_DESCRIPT_FLAGS_MFA 0x1 +#define MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK 0x2 +#define MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT 1 + +#define MEGASAS_FP_CMD_LEN 16 +#define MEGASAS_FUSION_IN_RESET 0 + +/* + * Raid Context structure which describes MegaRAID specific IO Parameters + * This resides at offset 0x60 where the SGL normally starts in MPT IO Frames + */ + +struct RAID_CONTEXT { +#if defined(__BIG_ENDIAN_BITFIELD) + u8 nseg:4; + u8 Type:4; +#else + u8 Type:4; + u8 nseg:4; +#endif + u8 resvd0; + u16 timeoutValue; + u8 regLockFlags; + u8 resvd1; + u16 VirtualDiskTgtId; + u64 regLockRowLBA; + u32 regLockLength; + u16 nextLMId; + u8 exStatus; + u8 status; + u8 RAIDFlags; + u8 numSGE; + u16 configSeqNum; + u8 spanArm; + u8 resvd2[3]; +}; + +#define RAID_CTX_SPANARM_ARM_SHIFT (0) +#define RAID_CTX_SPANARM_ARM_MASK (0x1f) + +#define RAID_CTX_SPANARM_SPAN_SHIFT (5) +#define RAID_CTX_SPANARM_SPAN_MASK (0xE0) + +/* + * define region lock types + */ +enum REGION_TYPE { + REGION_TYPE_UNUSED = 0, + REGION_TYPE_SHARED_READ = 1, + REGION_TYPE_SHARED_WRITE = 2, + REGION_TYPE_EXCLUSIVE = 3, +}; + +/* MPI2 defines */ +#define MPI2_FUNCTION_IOC_INIT (0x02) /* IOC Init */ +#define MPI2_WHOINIT_HOST_DRIVER (0x04) +#define MPI2_VERSION_MAJOR (0x02) +#define MPI2_VERSION_MINOR (0x00) +#define MPI2_VERSION_MAJOR_MASK (0xFF00) +#define MPI2_VERSION_MAJOR_SHIFT (8) +#define MPI2_VERSION_MINOR_MASK (0x00FF) +#define MPI2_VERSION_MINOR_SHIFT (0) +#define MPI2_VERSION ((MPI2_VERSION_MAJOR << MPI2_VERSION_MAJOR_SHIFT) | \ + MPI2_VERSION_MINOR) +#define MPI2_HEADER_VERSION_UNIT (0x10) +#define MPI2_HEADER_VERSION_DEV (0x00) +#define MPI2_HEADER_VERSION_UNIT_MASK (0xFF00) +#define MPI2_HEADER_VERSION_UNIT_SHIFT (8) +#define MPI2_HEADER_VERSION_DEV_MASK (0x00FF) +#define MPI2_HEADER_VERSION_DEV_SHIFT (0) +#define MPI2_HEADER_VERSION ((MPI2_HEADER_VERSION_UNIT << 8) | \ + MPI2_HEADER_VERSION_DEV) +#define MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03) +#define MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG (0x8000) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG (0x0400) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP (0x0003) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG (0x0200) +#define MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD (0x0100) +#define MPI2_SCSIIO_EEDPFLAGS_INSERT_OP (0x0004) +#define MPI2_FUNCTION_SCSI_IO_REQUEST (0x00) /* SCSI IO */ +#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY (0x06) +#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO (0x00) +#define MPI2_SGE_FLAGS_64_BIT_ADDRESSING (0x02) +#define MPI2_SCSIIO_CONTROL_WRITE (0x01000000) +#define MPI2_SCSIIO_CONTROL_READ (0x02000000) +#define MPI2_REQ_DESCRIPT_FLAGS_TYPE_MASK (0x0E) +#define MPI2_RPY_DESCRIPT_FLAGS_UNUSED (0x0F) +#define MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS (0x00) +#define MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK (0x0F) +#define MPI2_WRSEQ_FLUSH_KEY_VALUE (0x0) +#define MPI2_WRITE_SEQUENCE_OFFSET (0x00000004) +#define MPI2_WRSEQ_1ST_KEY_VALUE (0xF) +#define MPI2_WRSEQ_2ND_KEY_VALUE (0x4) +#define MPI2_WRSEQ_3RD_KEY_VALUE (0xB) +#define MPI2_WRSEQ_4TH_KEY_VALUE (0x2) +#define MPI2_WRSEQ_5TH_KEY_VALUE (0x7) +#define MPI2_WRSEQ_6TH_KEY_VALUE (0xD) + +struct MPI25_IEEE_SGE_CHAIN64 { + u64 Address; + u32 Length; + u16 Reserved1; + u8 NextChainOffset; + u8 Flags; +}; + +struct MPI2_SGE_SIMPLE_UNION { + u32 FlagsLength; + union { + u32 Address32; + u64 Address64; + } u; +}; + +struct MPI2_SCSI_IO_CDB_EEDP32 { + u8 CDB[20]; /* 0x00 */ + u32 PrimaryReferenceTag; /* 0x14 */ + u16 PrimaryApplicationTag; /* 0x18 */ + u16 PrimaryApplicationTagMask; /* 0x1A */ + u32 TransferLength; /* 0x1C */ +}; + +struct MPI2_SGE_CHAIN_UNION { + u16 Length; + u8 NextChainOffset; + u8 Flags; + union { + u32 Address32; + u64 Address64; + } u; +}; + +struct MPI2_IEEE_SGE_SIMPLE32 { + u32 Address; + u32 FlagsLength; +}; + +struct MPI2_IEEE_SGE_CHAIN32 { + u32 Address; + u32 FlagsLength; +}; + +struct MPI2_IEEE_SGE_SIMPLE64 { + u64 Address; + u32 Length; + u16 Reserved1; + u8 Reserved2; + u8 Flags; +}; + +struct MPI2_IEEE_SGE_CHAIN64 { + u64 Address; + u32 Length; + u16 Reserved1; + u8 Reserved2; + u8 Flags; +}; + +union MPI2_IEEE_SGE_SIMPLE_UNION { + struct MPI2_IEEE_SGE_SIMPLE32 Simple32; + struct MPI2_IEEE_SGE_SIMPLE64 Simple64; +}; + +union MPI2_IEEE_SGE_CHAIN_UNION { + struct MPI2_IEEE_SGE_CHAIN32 Chain32; + struct MPI2_IEEE_SGE_CHAIN64 Chain64; +}; + +union MPI2_SGE_IO_UNION { + struct MPI2_SGE_SIMPLE_UNION MpiSimple; + struct MPI2_SGE_CHAIN_UNION MpiChain; + union MPI2_IEEE_SGE_SIMPLE_UNION IeeeSimple; + union MPI2_IEEE_SGE_CHAIN_UNION IeeeChain; +}; + +union MPI2_SCSI_IO_CDB_UNION { + u8 CDB32[32]; + struct MPI2_SCSI_IO_CDB_EEDP32 EEDP32; + struct MPI2_SGE_SIMPLE_UNION SGE; +}; + +/* + * RAID SCSI IO Request Message + * Total SGE count will be one less than _MPI2_SCSI_IO_REQUEST + */ +struct MPI2_RAID_SCSI_IO_REQUEST { + u16 DevHandle; /* 0x00 */ + u8 ChainOffset; /* 0x02 */ + u8 Function; /* 0x03 */ + u16 Reserved1; /* 0x04 */ + u8 Reserved2; /* 0x06 */ + u8 MsgFlags; /* 0x07 */ + u8 VP_ID; /* 0x08 */ + u8 VF_ID; /* 0x09 */ + u16 Reserved3; /* 0x0A */ + u32 SenseBufferLowAddress; /* 0x0C */ + u16 SGLFlags; /* 0x10 */ + u8 SenseBufferLength; /* 0x12 */ + u8 Reserved4; /* 0x13 */ + u8 SGLOffset0; /* 0x14 */ + u8 SGLOffset1; /* 0x15 */ + u8 SGLOffset2; /* 0x16 */ + u8 SGLOffset3; /* 0x17 */ + u32 SkipCount; /* 0x18 */ + u32 DataLength; /* 0x1C */ + u32 BidirectionalDataLength; /* 0x20 */ + u16 IoFlags; /* 0x24 */ + u16 EEDPFlags; /* 0x26 */ + u32 EEDPBlockSize; /* 0x28 */ + u32 SecondaryReferenceTag; /* 0x2C */ + u16 SecondaryApplicationTag; /* 0x30 */ + u16 ApplicationTagTranslationMask; /* 0x32 */ + u8 LUN[8]; /* 0x34 */ + u32 Control; /* 0x3C */ + union MPI2_SCSI_IO_CDB_UNION CDB; /* 0x40 */ + struct RAID_CONTEXT RaidContext; /* 0x60 */ + union MPI2_SGE_IO_UNION SGL; /* 0x80 */ +}; + +/* + * MPT RAID MFA IO Descriptor. + */ +struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR { +#if defined(__BIG_ENDIAN_BITFIELD) + u32 MessageAddress1:24; /* bits 31:8*/ + u32 RequestFlags:8; +#else + u32 RequestFlags:8; + u32 MessageAddress1:24; /* bits 31:8*/ +#endif + u32 MessageAddress2; /* bits 61:32 */ +}; + +/* Default Request Descriptor */ +struct MPI2_DEFAULT_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 DescriptorTypeDependent; /* 0x06 */ +}; + +/* High Priority Request Descriptor */ +struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 Reserved1; /* 0x06 */ +}; + +/* SCSI IO Request Descriptor */ +struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 DevHandle; /* 0x06 */ +}; + +/* SCSI Target Request Descriptor */ +struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 IoIndex; /* 0x06 */ +}; + +/* RAID Accelerator Request Descriptor */ +struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR { + u8 RequestFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 LMID; /* 0x04 */ + u16 Reserved; /* 0x06 */ +}; + +/* union of Request Descriptors */ +union MEGASAS_REQUEST_DESCRIPTOR_UNION { + struct MPI2_DEFAULT_REQUEST_DESCRIPTOR Default; + struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR HighPriority; + struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR SCSIIO; + struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR SCSITarget; + struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR RAIDAccelerator; + struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR MFAIo; + union { + struct { + u32 low; + u32 high; + } u; + u64 Words; + }; +}; + +/* Default Reply Descriptor */ +struct MPI2_DEFAULT_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 DescriptorTypeDependent1; /* 0x02 */ + u32 DescriptorTypeDependent2; /* 0x04 */ +}; + +/* Address Reply Descriptor */ +struct MPI2_ADDRESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u32 ReplyFrameAddress; /* 0x04 */ +}; + +/* SCSI IO Success Reply Descriptor */ +struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u16 TaskTag; /* 0x04 */ + u16 Reserved1; /* 0x06 */ +}; + +/* TargetAssist Success Reply Descriptor */ +struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u8 SequenceNumber; /* 0x04 */ + u8 Reserved1; /* 0x05 */ + u16 IoIndex; /* 0x06 */ +}; + +/* Target Command Buffer Reply Descriptor */ +struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u8 VP_ID; /* 0x02 */ + u8 Flags; /* 0x03 */ + u16 InitiatorDevHandle; /* 0x04 */ + u16 IoIndex; /* 0x06 */ +}; + +/* RAID Accelerator Success Reply Descriptor */ +struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR { + u8 ReplyFlags; /* 0x00 */ + u8 MSIxIndex; /* 0x01 */ + u16 SMID; /* 0x02 */ + u32 Reserved; /* 0x04 */ +}; + +/* union of Reply Descriptors */ +union MPI2_REPLY_DESCRIPTORS_UNION { + struct MPI2_DEFAULT_REPLY_DESCRIPTOR Default; + struct MPI2_ADDRESS_REPLY_DESCRIPTOR AddressReply; + struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR SCSIIOSuccess; + struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR TargetAssistSuccess; + struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR TargetCommandBuffer; + struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR + RAIDAcceleratorSuccess; + u64 Words; +}; + +/* IOCInit Request message */ +struct MPI2_IOC_INIT_REQUEST { + u8 WhoInit; /* 0x00 */ + u8 Reserved1; /* 0x01 */ + u8 ChainOffset; /* 0x02 */ + u8 Function; /* 0x03 */ + u16 Reserved2; /* 0x04 */ + u8 Reserved3; /* 0x06 */ + u8 MsgFlags; /* 0x07 */ + u8 VP_ID; /* 0x08 */ + u8 VF_ID; /* 0x09 */ + u16 Reserved4; /* 0x0A */ + u16 MsgVersion; /* 0x0C */ + u16 HeaderVersion; /* 0x0E */ + u32 Reserved5; /* 0x10 */ + u16 Reserved6; /* 0x14 */ + u8 Reserved7; /* 0x16 */ + u8 HostMSIxVectors; /* 0x17 */ + u16 Reserved8; /* 0x18 */ + u16 SystemRequestFrameSize; /* 0x1A */ + u16 ReplyDescriptorPostQueueDepth; /* 0x1C */ + u16 ReplyFreeQueueDepth; /* 0x1E */ + u32 SenseBufferAddressHigh; /* 0x20 */ + u32 SystemReplyAddressHigh; /* 0x24 */ + u64 SystemRequestFrameBaseAddress; /* 0x28 */ + u64 ReplyDescriptorPostQueueAddress;/* 0x30 */ + u64 ReplyFreeQueueAddress; /* 0x38 */ + u64 TimeStamp; /* 0x40 */ +}; + +/* mrpriv defines */ +#define MR_PD_INVALID 0xFFFF +#define MAX_SPAN_DEPTH 8 +#define MAX_QUAD_DEPTH MAX_SPAN_DEPTH +#define MAX_RAIDMAP_SPAN_DEPTH (MAX_SPAN_DEPTH) +#define MAX_ROW_SIZE 32 +#define MAX_RAIDMAP_ROW_SIZE (MAX_ROW_SIZE) +#define MAX_LOGICAL_DRIVES 64 +#define MAX_RAIDMAP_LOGICAL_DRIVES (MAX_LOGICAL_DRIVES) +#define MAX_RAIDMAP_VIEWS (MAX_LOGICAL_DRIVES) +#define MAX_ARRAYS 128 +#define MAX_RAIDMAP_ARRAYS (MAX_ARRAYS) +#define MAX_PHYSICAL_DEVICES 256 +#define MAX_RAIDMAP_PHYSICAL_DEVICES (MAX_PHYSICAL_DEVICES) +#define MR_DCMD_LD_MAP_GET_INFO 0x0300e101 +#define MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC 0x010e8485 /* SR-IOV HB alloc*/ +#define MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111 0x03200200 +#define MR_DCMD_LD_VF_MAP_GET_ALL_LDS 0x03150200 + +struct MR_DEV_HANDLE_INFO { + u16 curDevHdl; + u8 validHandles; + u8 reserved; + u16 devHandle[2]; +}; + +struct MR_ARRAY_INFO { + u16 pd[MAX_RAIDMAP_ROW_SIZE]; +}; + +struct MR_QUAD_ELEMENT { + u64 logStart; + u64 logEnd; + u64 offsetInSpan; + u32 diff; + u32 reserved1; +}; + +struct MR_SPAN_INFO { + u32 noElements; + u32 reserved1; + struct MR_QUAD_ELEMENT quad[MAX_RAIDMAP_SPAN_DEPTH]; +}; + +struct MR_LD_SPAN { + u64 startBlk; + u64 numBlks; + u16 arrayRef; + u8 spanRowSize; + u8 spanRowDataSize; + u8 reserved[4]; +}; + +struct MR_SPAN_BLOCK_INFO { + u64 num_rows; + struct MR_LD_SPAN span; + struct MR_SPAN_INFO block_span_info; +}; + +struct MR_LD_RAID { + struct { +#if defined(__BIG_ENDIAN_BITFIELD) + u32 reserved4:7; + u32 fpNonRWCapable:1; + u32 fpReadAcrossStripe:1; + u32 fpWriteAcrossStripe:1; + u32 fpReadCapable:1; + u32 fpWriteCapable:1; + u32 encryptionType:8; + u32 pdPiMode:4; + u32 ldPiMode:4; + u32 reserved5:3; + u32 fpCapable:1; +#else + u32 fpCapable:1; + u32 reserved5:3; + u32 ldPiMode:4; + u32 pdPiMode:4; + u32 encryptionType:8; + u32 fpWriteCapable:1; + u32 fpReadCapable:1; + u32 fpWriteAcrossStripe:1; + u32 fpReadAcrossStripe:1; + u32 fpNonRWCapable:1; + u32 reserved4:7; +#endif + } capability; + u32 reserved6; + u64 size; + u8 spanDepth; + u8 level; + u8 stripeShift; + u8 rowSize; + u8 rowDataSize; + u8 writeMode; + u8 PRL; + u8 SRL; + u16 targetId; + u8 ldState; + u8 regTypeReqOnWrite; + u8 modFactor; + u8 regTypeReqOnRead; + u16 seqNum; + + struct { + u32 ldSyncRequired:1; + u32 reserved:31; + } flags; + + u8 LUN[8]; /* 0x24 8 byte LUN field used for SCSI IO's */ + u8 fpIoTimeoutForLd;/*0x2C timeout value used by driver in FP IO*/ + u8 reserved3[0x80-0x2D]; /* 0x2D */ +}; + +struct MR_LD_SPAN_MAP { + struct MR_LD_RAID ldRaid; + u8 dataArmMap[MAX_RAIDMAP_ROW_SIZE]; + struct MR_SPAN_BLOCK_INFO spanBlock[MAX_RAIDMAP_SPAN_DEPTH]; +}; + +struct MR_FW_RAID_MAP { + u32 totalSize; + union { + struct { + u32 maxLd; + u32 maxSpanDepth; + u32 maxRowSize; + u32 maxPdCount; + u32 maxArrays; + } validationInfo; + u32 version[5]; + u32 reserved1[5]; + }; + + u32 ldCount; + u32 Reserved1; + u8 ldTgtIdToLd[MAX_RAIDMAP_LOGICAL_DRIVES+ + MAX_RAIDMAP_VIEWS]; + u8 fpPdIoTimeoutSec; + u8 reserved2[7]; + struct MR_ARRAY_INFO arMapInfo[MAX_RAIDMAP_ARRAYS]; + struct MR_DEV_HANDLE_INFO devHndlInfo[MAX_RAIDMAP_PHYSICAL_DEVICES]; + struct MR_LD_SPAN_MAP ldSpanMap[1]; +}; + +struct IO_REQUEST_INFO { + u64 ldStartBlock; + u32 numBlocks; + u16 ldTgtId; + u8 isRead; + u16 devHandle; + u64 pdBlock; + u8 fpOkForIo; + u8 IoforUnevenSpan; + u8 start_span; + u8 reserved; + u64 start_row; +}; + +struct MR_LD_TARGET_SYNC { + u8 targetId; + u8 reserved; + u16 seqNum; +}; + +#define IEEE_SGE_FLAGS_ADDR_MASK (0x03) +#define IEEE_SGE_FLAGS_SYSTEM_ADDR (0x00) +#define IEEE_SGE_FLAGS_IOCDDR_ADDR (0x01) +#define IEEE_SGE_FLAGS_IOCPLB_ADDR (0x02) +#define IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03) +#define IEEE_SGE_FLAGS_CHAIN_ELEMENT (0x80) +#define IEEE_SGE_FLAGS_END_OF_LIST (0x40) + +struct megasas_register_set; +struct megasas_instance; + +union desc_word { + u64 word; + struct { + u32 low; + u32 high; + } u; +}; + +struct megasas_cmd_fusion { + struct MPI2_RAID_SCSI_IO_REQUEST *io_request; + dma_addr_t io_request_phys_addr; + + union MPI2_SGE_IO_UNION *sg_frame; + dma_addr_t sg_frame_phys_addr; + + u8 *sense; + dma_addr_t sense_phys_addr; + + struct list_head list; + struct scsi_cmnd *scmd; + struct megasas_instance *instance; + + u8 retry_for_fw_reset; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *request_desc; + + /* + * Context for a MFI frame. + * Used to get the mfi cmd from list when a MFI cmd is completed + */ + u32 sync_cmd_idx; + u32 index; + u8 flags; +}; + +struct LD_LOAD_BALANCE_INFO { + u8 loadBalanceFlag; + u8 reserved1; + u16 raid1DevHandle[2]; + atomic_t scsi_pending_cmds[2]; + u64 last_accessed_block[2]; +}; + +/* SPAN_SET is info caclulated from span info from Raid map per LD */ +typedef struct _LD_SPAN_SET { + u64 log_start_lba; + u64 log_end_lba; + u64 span_row_start; + u64 span_row_end; + u64 data_strip_start; + u64 data_strip_end; + u64 data_row_start; + u64 data_row_end; + u8 strip_offset[MAX_SPAN_DEPTH]; + u32 span_row_data_width; + u32 diff; + u32 reserved[2]; +} LD_SPAN_SET, *PLD_SPAN_SET; + +typedef struct LOG_BLOCK_SPAN_INFO { + LD_SPAN_SET span_set[MAX_SPAN_DEPTH]; +} LD_SPAN_INFO, *PLD_SPAN_INFO; + +struct MR_FW_RAID_MAP_ALL { + struct MR_FW_RAID_MAP raidMap; + struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES - 1]; +} __attribute__ ((packed)); + +struct fusion_context { + struct megasas_cmd_fusion **cmd_list; + struct list_head cmd_pool; + + spinlock_t cmd_pool_lock; + + dma_addr_t req_frames_desc_phys; + u8 *req_frames_desc; + + struct dma_pool *io_request_frames_pool; + dma_addr_t io_request_frames_phys; + u8 *io_request_frames; + + struct dma_pool *sg_dma_pool; + struct dma_pool *sense_dma_pool; + + dma_addr_t reply_frames_desc_phys; + union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc; + struct dma_pool *reply_frames_desc_pool; + + u16 last_reply_idx[MAX_MSIX_QUEUES_FUSION]; + + u32 reply_q_depth; + u32 request_alloc_sz; + u32 reply_alloc_sz; + u32 io_frames_alloc_sz; + + u16 max_sge_in_main_msg; + u16 max_sge_in_chain; + + u8 chain_offset_io_request; + u8 chain_offset_mfi_pthru; + + struct MR_FW_RAID_MAP_ALL *ld_map[2]; + dma_addr_t ld_map_phys[2]; + + u32 map_sz; + u8 fast_path_io; + struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES]; + LD_SPAN_INFO log_to_span[MAX_LOGICAL_DRIVES]; +}; + +union desc_value { + u64 word; + struct { + u32 low; + u32 high; + } u; +}; + +#endif /* _MEGARAID_SAS_FUSION_H_ */ |