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path: root/drivers/block/cciss.c
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Diffstat (limited to 'drivers/block/cciss.c')
-rw-r--r--drivers/block/cciss.c291
1 files changed, 181 insertions, 110 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 8f4ef656a1a..4595c22f33f 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -24,6 +24,7 @@
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/pci.h>
+#include <linux/pci-aspm.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
@@ -40,8 +41,9 @@
#include <linux/spinlock.h>
#include <linux/compat.h>
#include <linux/mutex.h>
+#include <linux/bitmap.h>
+#include <linux/io.h>
#include <asm/uaccess.h>
-#include <asm/io.h>
#include <linux/dma-mapping.h>
#include <linux/blkdev.h>
@@ -68,6 +70,16 @@ static int cciss_tape_cmds = 6;
module_param(cciss_tape_cmds, int, 0644);
MODULE_PARM_DESC(cciss_tape_cmds,
"number of commands to allocate for tape devices (default: 6)");
+static int cciss_simple_mode;
+module_param(cciss_simple_mode, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(cciss_simple_mode,
+ "Use 'simple mode' rather than 'performant mode'");
+
+static int cciss_allow_hpsa;
+module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(cciss_allow_hpsa,
+ "Prevent cciss driver from accessing hardware known to be "
+ " supported by the hpsa driver");
static DEFINE_MUTEX(cciss_mutex);
static struct proc_dir_entry *proc_cciss;
@@ -155,9 +167,7 @@ static irqreturn_t do_cciss_intx(int irq, void *dev_id);
static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id);
static int cciss_open(struct block_device *bdev, fmode_t mode);
static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode);
-static int cciss_release(struct gendisk *disk, fmode_t mode);
-static int do_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg);
+static void cciss_release(struct gendisk *disk, fmode_t mode);
static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg);
static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
@@ -175,7 +185,8 @@ static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol,
sector_t total_size,
unsigned int block_size, InquiryData_struct *inq_buff,
drive_info_struct *drv);
-static void __devinit cciss_interrupt_mode(ctlr_info_t *);
+static void cciss_interrupt_mode(ctlr_info_t *);
+static int cciss_enter_simple_mode(struct ctlr_info *h);
static void start_io(ctlr_info_t *h);
static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size,
__u8 page_code, unsigned char scsi3addr[],
@@ -192,14 +203,13 @@ static void cciss_device_release(struct device *dev);
static void cciss_free_gendisk(ctlr_info_t *h, int drv_index);
static void cciss_free_drive_info(ctlr_info_t *h, int drv_index);
static inline u32 next_command(ctlr_info_t *h);
-static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev,
- void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index,
- u64 *cfg_offset);
-static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev,
- unsigned long *memory_bar);
+static int cciss_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
+ u32 *cfg_base_addr, u64 *cfg_base_addr_index,
+ u64 *cfg_offset);
+static int cciss_pci_find_memory_BAR(struct pci_dev *pdev,
+ unsigned long *memory_bar);
static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag);
-static __devinit int write_driver_ver_to_cfgtable(
- CfgTable_struct __iomem *cfgtable);
+static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem *cfgtable);
/* performant mode helper functions */
static void calc_bucket_map(int *bucket, int num_buckets, int nsgs,
@@ -223,7 +233,7 @@ static const struct block_device_operations cciss_fops = {
.owner = THIS_MODULE,
.open = cciss_unlocked_open,
.release = cciss_release,
- .ioctl = do_ioctl,
+ .ioctl = cciss_ioctl,
.getgeo = cciss_getgeo,
#ifdef CONFIG_COMPAT
.compat_ioctl = cciss_compat_ioctl,
@@ -388,7 +398,7 @@ static void cciss_seq_show_header(struct seq_file *seq)
h->product_name,
(unsigned long)h->board_id,
h->firm_ver[0], h->firm_ver[1], h->firm_ver[2],
- h->firm_ver[3], (unsigned int)h->intr[PERF_MODE_INT],
+ h->firm_ver[3], (unsigned int)h->intr[h->intr_mode],
h->num_luns,
h->Qdepth, h->commands_outstanding,
h->maxQsinceinit, h->max_outstanding, h->maxSG);
@@ -487,7 +497,7 @@ static int cciss_seq_open(struct inode *inode, struct file *file)
struct seq_file *seq = file->private_data;
if (!ret)
- seq->private = PDE(inode)->data;
+ seq->private = PDE_DATA(inode);
return ret;
}
@@ -543,7 +553,7 @@ static const struct file_operations cciss_proc_fops = {
.write = cciss_proc_write,
};
-static void __devinit cciss_procinit(ctlr_info_t *h)
+static void cciss_procinit(ctlr_info_t *h)
{
struct proc_dir_entry *pde;
@@ -636,6 +646,18 @@ static ssize_t host_store_rescan(struct device *dev,
}
static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
+static ssize_t host_show_transport_mode(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ctlr_info *h = to_hba(dev);
+
+ return snprintf(buf, 20, "%s\n",
+ h->transMethod & CFGTBL_Trans_Performant ?
+ "performant" : "simple");
+}
+static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL);
+
static ssize_t dev_show_unique_id(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -808,6 +830,7 @@ static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL);
static struct attribute *cciss_host_attrs[] = {
&dev_attr_rescan.attr,
&dev_attr_resettable.attr,
+ &dev_attr_transport_mode.attr,
NULL
};
@@ -959,8 +982,7 @@ static CommandList_struct *cmd_alloc(ctlr_info_t *h)
i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
if (i == h->nr_cmds)
return NULL;
- } while (test_and_set_bit(i & (BITS_PER_LONG - 1),
- h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
+ } while (test_and_set_bit(i, h->cmd_pool_bits) != 0);
c = h->cmd_pool + i;
memset(c, 0, sizeof(CommandList_struct));
cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(CommandList_struct);
@@ -1027,8 +1049,7 @@ static void cmd_free(ctlr_info_t *h, CommandList_struct *c)
int i;
i = c - h->cmd_pool;
- clear_bit(i & (BITS_PER_LONG - 1),
- h->cmd_pool_bits + (i / BITS_PER_LONG));
+ clear_bit(i, h->cmd_pool_bits);
h->nr_frees++;
}
@@ -1106,7 +1127,7 @@ static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode)
/*
* Close. Sync first.
*/
-static int cciss_release(struct gendisk *disk, fmode_t mode)
+static void cciss_release(struct gendisk *disk, fmode_t mode)
{
ctlr_info_t *h;
drive_info_struct *drv;
@@ -1118,17 +1139,6 @@ static int cciss_release(struct gendisk *disk, fmode_t mode)
drv->usage_count--;
h->usage_count--;
mutex_unlock(&cciss_mutex);
- return 0;
-}
-
-static int do_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned cmd, unsigned long arg)
-{
- int ret;
- mutex_lock(&cciss_mutex);
- ret = cciss_ioctl(bdev, mode, cmd, arg);
- mutex_unlock(&cciss_mutex);
- return ret;
}
#ifdef CONFIG_COMPAT
@@ -1157,7 +1167,7 @@ static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode,
case CCISS_REGNEWD:
case CCISS_RESCANDISK:
case CCISS_GETLUNINFO:
- return do_ioctl(bdev, mode, cmd, arg);
+ return cciss_ioctl(bdev, mode, cmd, arg);
case CCISS_PASSTHRU32:
return cciss_ioctl32_passthru(bdev, mode, cmd, arg);
@@ -1179,6 +1189,7 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
int err;
u32 cp;
+ memset(&arg64, 0, sizeof(arg64));
err = 0;
err |=
copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
@@ -1197,7 +1208,7 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
if (err)
return -EFAULT;
- err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p);
+ err = cciss_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p);
if (err)
return err;
err |=
@@ -1239,7 +1250,7 @@ static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode,
if (err)
return -EFAULT;
- err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p);
+ err = cciss_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p);
if (err)
return err;
err |=
@@ -1289,11 +1300,14 @@ static int cciss_getpciinfo(ctlr_info_t *h, void __user *argp)
static int cciss_getintinfo(ctlr_info_t *h, void __user *argp)
{
cciss_coalint_struct intinfo;
+ unsigned long flags;
if (!argp)
return -EINVAL;
+ spin_lock_irqsave(&h->lock, flags);
intinfo.delay = readl(&h->cfgtable->HostWrite.CoalIntDelay);
intinfo.count = readl(&h->cfgtable->HostWrite.CoalIntCount);
+ spin_unlock_irqrestore(&h->lock, flags);
if (copy_to_user
(argp, &intinfo, sizeof(cciss_coalint_struct)))
return -EFAULT;
@@ -1334,12 +1348,15 @@ static int cciss_setintinfo(ctlr_info_t *h, void __user *argp)
static int cciss_getnodename(ctlr_info_t *h, void __user *argp)
{
NodeName_type NodeName;
+ unsigned long flags;
int i;
if (!argp)
return -EINVAL;
+ spin_lock_irqsave(&h->lock, flags);
for (i = 0; i < 16; i++)
NodeName[i] = readb(&h->cfgtable->ServerName[i]);
+ spin_unlock_irqrestore(&h->lock, flags);
if (copy_to_user(argp, NodeName, sizeof(NodeName_type)))
return -EFAULT;
return 0;
@@ -1376,10 +1393,13 @@ static int cciss_setnodename(ctlr_info_t *h, void __user *argp)
static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp)
{
Heartbeat_type heartbeat;
+ unsigned long flags;
if (!argp)
return -EINVAL;
+ spin_lock_irqsave(&h->lock, flags);
heartbeat = readl(&h->cfgtable->HeartBeat);
+ spin_unlock_irqrestore(&h->lock, flags);
if (copy_to_user(argp, &heartbeat, sizeof(Heartbeat_type)))
return -EFAULT;
return 0;
@@ -1388,10 +1408,13 @@ static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp)
static int cciss_getbustypes(ctlr_info_t *h, void __user *argp)
{
BusTypes_type BusTypes;
+ unsigned long flags;
if (!argp)
return -EINVAL;
+ spin_lock_irqsave(&h->lock, flags);
BusTypes = readl(&h->cfgtable->BusTypes);
+ spin_unlock_irqrestore(&h->lock, flags);
if (copy_to_user(argp, &BusTypes, sizeof(BusTypes_type)))
return -EFAULT;
return 0;
@@ -1716,7 +1739,7 @@ static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
case CCISS_BIG_PASSTHRU:
return cciss_bigpassthru(h, argp);
- /* scsi_cmd_ioctl handles these, below, though some are not */
+ /* scsi_cmd_blk_ioctl handles these, below, though some are not */
/* very meaningful for cciss. SG_IO is the main one people want. */
case SG_GET_VERSION_NUM:
@@ -1727,9 +1750,9 @@ static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
case SG_EMULATED_HOST:
case SG_IO:
case SCSI_IOCTL_SEND_COMMAND:
- return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
+ return scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
- /* scsi_cmd_ioctl would normally handle these, below, but */
+ /* scsi_cmd_blk_ioctl would normally handle these, below, but */
/* they aren't a good fit for cciss, as CD-ROMs are */
/* not supported, and we don't have any bus/target/lun */
/* which we present to the kernel. */
@@ -2582,6 +2605,8 @@ static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff,
c->Request.Timeout = 0;
c->Request.CDB[0] = BMIC_WRITE;
c->Request.CDB[6] = BMIC_CACHE_FLUSH;
+ c->Request.CDB[7] = (size >> 8) & 0xFF;
+ c->Request.CDB[8] = size & 0xFF;
break;
case TEST_UNIT_READY:
c->Request.CDBLen = 6;
@@ -2643,8 +2668,8 @@ static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff,
return status;
}
-static int __devinit cciss_send_reset(ctlr_info_t *h, unsigned char *scsi3addr,
- u8 reset_type)
+static int cciss_send_reset(ctlr_info_t *h, unsigned char *scsi3addr,
+ u8 reset_type)
{
CommandList_struct *c;
int return_status;
@@ -2783,7 +2808,7 @@ resend_cmd2:
/* erase the old error information */
memset(c->err_info, 0, sizeof(ErrorInfo_struct));
return_status = IO_OK;
- INIT_COMPLETION(wait);
+ reinit_completion(&wait);
goto resend_cmd2;
}
@@ -3644,7 +3669,7 @@ static int add_to_scan_list(struct ctlr_info *h)
}
}
if (!found && !h->busy_scanning) {
- INIT_COMPLETION(h->scan_wait);
+ reinit_completion(&h->scan_wait);
list_add_tail(&h->scan_list, &scan_q);
ret = 1;
}
@@ -3899,7 +3924,7 @@ static void calc_bucket_map(int bucket[], int num_buckets,
}
}
-static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h)
+static void cciss_wait_for_mode_change_ack(ctlr_info_t *h)
{
int i;
@@ -3913,8 +3938,7 @@ static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h)
}
}
-static __devinit void cciss_enter_performant_mode(ctlr_info_t *h,
- u32 use_short_tags)
+static void cciss_enter_performant_mode(ctlr_info_t *h, u32 use_short_tags)
{
/* This is a bit complicated. There are 8 registers on
* the controller which we write to to tell it 8 different
@@ -3980,10 +4004,13 @@ static __devinit void cciss_enter_performant_mode(ctlr_info_t *h,
" performant mode\n");
}
-static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h)
+static void cciss_put_controller_into_performant_mode(ctlr_info_t *h)
{
__u32 trans_support;
+ if (cciss_simple_mode)
+ return;
+
dev_dbg(&h->pdev->dev, "Trying to put board into Performant mode\n");
/* Attempt to put controller into performant mode if supported */
/* Does board support performant mode? */
@@ -4039,7 +4066,7 @@ clean_up:
* controllers that are capable. If not, we use IO-APIC mode.
*/
-static void __devinit cciss_interrupt_mode(ctlr_info_t *h)
+static void cciss_interrupt_mode(ctlr_info_t *h)
{
#ifdef CONFIG_PCI_MSI
int err;
@@ -4053,7 +4080,7 @@ static void __devinit cciss_interrupt_mode(ctlr_info_t *h)
goto default_int_mode;
if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
- err = pci_enable_msix(h->pdev, cciss_msix_entries, 4);
+ err = pci_enable_msix_exact(h->pdev, cciss_msix_entries, 4);
if (!err) {
h->intr[0] = cciss_msix_entries[0].vector;
h->intr[1] = cciss_msix_entries[1].vector;
@@ -4061,15 +4088,9 @@ static void __devinit cciss_interrupt_mode(ctlr_info_t *h)
h->intr[3] = cciss_msix_entries[3].vector;
h->msix_vector = 1;
return;
- }
- if (err > 0) {
- dev_warn(&h->pdev->dev,
- "only %d MSI-X vectors available\n", err);
- goto default_int_mode;
} else {
dev_warn(&h->pdev->dev,
"MSI-X init failed %d\n", err);
- goto default_int_mode;
}
}
if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
@@ -4081,11 +4102,11 @@ static void __devinit cciss_interrupt_mode(ctlr_info_t *h)
default_int_mode:
#endif /* CONFIG_PCI_MSI */
/* if we get here we're going to use the default interrupt mode */
- h->intr[PERF_MODE_INT] = h->pdev->irq;
+ h->intr[h->intr_mode] = h->pdev->irq;
return;
}
-static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
+static int cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
{
int i;
u32 subsystem_vendor_id, subsystem_device_id;
@@ -4095,9 +4116,13 @@ static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
*board_id = ((subsystem_device_id << 16) & 0xffff0000) |
subsystem_vendor_id;
- for (i = 0; i < ARRAY_SIZE(products); i++)
+ for (i = 0; i < ARRAY_SIZE(products); i++) {
+ /* Stand aside for hpsa driver on request */
+ if (cciss_allow_hpsa)
+ return -ENODEV;
if (*board_id == products[i].board_id)
return i;
+ }
dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n",
*board_id);
return -ENODEV;
@@ -4111,8 +4136,8 @@ static inline bool cciss_board_disabled(ctlr_info_t *h)
return ((command & PCI_COMMAND_MEMORY) == 0);
}
-static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev,
- unsigned long *memory_bar)
+static int cciss_pci_find_memory_BAR(struct pci_dev *pdev,
+ unsigned long *memory_bar)
{
int i;
@@ -4128,8 +4153,8 @@ static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev,
return -ENODEV;
}
-static int __devinit cciss_wait_for_board_state(struct pci_dev *pdev,
- void __iomem *vaddr, int wait_for_ready)
+static int cciss_wait_for_board_state(struct pci_dev *pdev,
+ void __iomem *vaddr, int wait_for_ready)
#define BOARD_READY 1
#define BOARD_NOT_READY 0
{
@@ -4156,9 +4181,9 @@ static int __devinit cciss_wait_for_board_state(struct pci_dev *pdev,
return -ENODEV;
}
-static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev,
- void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index,
- u64 *cfg_offset)
+static int cciss_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
+ u32 *cfg_base_addr, u64 *cfg_base_addr_index,
+ u64 *cfg_offset)
{
*cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
*cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
@@ -4172,7 +4197,7 @@ static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev,
return 0;
}
-static int __devinit cciss_find_cfgtables(ctlr_info_t *h)
+static int cciss_find_cfgtables(ctlr_info_t *h)
{
u64 cfg_offset;
u32 cfg_base_addr;
@@ -4185,7 +4210,7 @@ static int __devinit cciss_find_cfgtables(ctlr_info_t *h)
if (rc)
return rc;
h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
- cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable));
+ cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
if (!h->cfgtable)
return -ENOMEM;
rc = write_driver_ver_to_cfgtable(h->cfgtable);
@@ -4201,7 +4226,7 @@ static int __devinit cciss_find_cfgtables(ctlr_info_t *h)
return 0;
}
-static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h)
+static void cciss_get_max_perf_mode_cmds(struct ctlr_info *h)
{
h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
@@ -4222,12 +4247,19 @@ static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h)
* max commands, max SG elements without chaining, and with chaining,
* SG chain block size, etc.
*/
-static void __devinit cciss_find_board_params(ctlr_info_t *h)
+static void cciss_find_board_params(ctlr_info_t *h)
{
cciss_get_max_perf_mode_cmds(h);
h->nr_cmds = h->max_commands - 4 - cciss_tape_cmds;
h->maxsgentries = readl(&(h->cfgtable->MaxSGElements));
/*
+ * The P600 may exhibit poor performnace under some workloads
+ * if we use the value in the configuration table. Limit this
+ * controller to MAXSGENTRIES (32) instead.
+ */
+ if (h->board_id == 0x3225103C)
+ h->maxsgentries = MAXSGENTRIES;
+ /*
* Limit in-command s/g elements to 32 save dma'able memory.
* Howvever spec says if 0, use 31
*/
@@ -4244,10 +4276,7 @@ static void __devinit cciss_find_board_params(ctlr_info_t *h)
static inline bool CISS_signature_present(ctlr_info_t *h)
{
- if ((readb(&h->cfgtable->Signature[0]) != 'C') ||
- (readb(&h->cfgtable->Signature[1]) != 'I') ||
- (readb(&h->cfgtable->Signature[2]) != 'S') ||
- (readb(&h->cfgtable->Signature[3]) != 'S')) {
+ if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
dev_warn(&h->pdev->dev, "not a valid CISS config table\n");
return false;
}
@@ -4284,7 +4313,7 @@ static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t *h)
pci_write_config_dword(h->pdev, PCI_COMMAND_PARITY, dma_refetch);
}
-static int __devinit cciss_pci_init(ctlr_info_t *h)
+static int cciss_pci_init(ctlr_info_t *h)
{
int prod_index, err;
@@ -4298,6 +4327,10 @@ static int __devinit cciss_pci_init(ctlr_info_t *h)
dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
return -ENODEV;
}
+
+ pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
+ PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
+
err = pci_enable_device(h->pdev);
if (err) {
dev_warn(&h->pdev->dev, "Unable to Enable PCI device\n");
@@ -4341,6 +4374,9 @@ static int __devinit cciss_pci_init(ctlr_info_t *h)
}
cciss_enable_scsi_prefetch(h);
cciss_p600_dma_prefetch_quirk(h);
+ err = cciss_enter_simple_mode(h);
+ if (err)
+ goto err_out_free_res;
cciss_put_controller_into_performant_mode(h);
return 0;
@@ -4397,7 +4433,8 @@ static void free_hba(ctlr_info_t *h)
}
/* Send a message CDB to the firmware. */
-static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type)
+static int cciss_message(struct pci_dev *pdev, unsigned char opcode,
+ unsigned char type)
{
typedef struct {
CommandListHeader_struct CommandHeader;
@@ -4533,18 +4570,24 @@ static int cciss_controller_hard_reset(struct pci_dev *pdev,
pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
pmcsr |= PCI_D0;
pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
+
+ /*
+ * The P600 requires a small delay when changing states.
+ * Otherwise we may think the board did not reset and we bail.
+ * This for kdump only and is particular to the P600.
+ */
+ msleep(500);
}
return 0;
}
-static __devinit void init_driver_version(char *driver_version, int len)
+static void init_driver_version(char *driver_version, int len)
{
memset(driver_version, 0, len);
strncpy(driver_version, "cciss " DRIVER_NAME, len - 1);
}
-static __devinit int write_driver_ver_to_cfgtable(
- CfgTable_struct __iomem *cfgtable)
+static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem *cfgtable)
{
char *driver_version;
int i, size = sizeof(cfgtable->driver_version);
@@ -4560,8 +4603,8 @@ static __devinit int write_driver_ver_to_cfgtable(
return 0;
}
-static __devinit void read_driver_ver_from_cfgtable(
- CfgTable_struct __iomem *cfgtable, unsigned char *driver_ver)
+static void read_driver_ver_from_cfgtable(CfgTable_struct __iomem *cfgtable,
+ unsigned char *driver_ver)
{
int i;
@@ -4569,8 +4612,7 @@ static __devinit void read_driver_ver_from_cfgtable(
driver_ver[i] = readb(&cfgtable->driver_version[i]);
}
-static __devinit int controller_reset_failed(
- CfgTable_struct __iomem *cfgtable)
+static int controller_reset_failed(CfgTable_struct __iomem *cfgtable)
{
char *driver_ver, *old_driver_ver;
@@ -4593,7 +4635,7 @@ static __devinit int controller_reset_failed(
/* This does a hard reset of the controller using PCI power management
* states or using the doorbell register. */
-static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev)
+static int cciss_kdump_hard_reset_controller(struct pci_dev *pdev)
{
u64 cfg_offset;
u32 cfg_base_addr;
@@ -4738,7 +4780,7 @@ unmap_vaddr:
return rc;
}
-static __devinit int cciss_init_reset_devices(struct pci_dev *pdev)
+static int cciss_init_reset_devices(struct pci_dev *pdev)
{
int rc, i;
@@ -4772,10 +4814,9 @@ static __devinit int cciss_init_reset_devices(struct pci_dev *pdev)
return 0;
}
-static __devinit int cciss_allocate_cmd_pool(ctlr_info_t *h)
+static int cciss_allocate_cmd_pool(ctlr_info_t *h)
{
- h->cmd_pool_bits = kmalloc(
- DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
+ h->cmd_pool_bits = kmalloc(BITS_TO_LONGS(h->nr_cmds) *
sizeof(unsigned long), GFP_KERNEL);
h->cmd_pool = pci_alloc_consistent(h->pdev,
h->nr_cmds * sizeof(CommandList_struct),
@@ -4792,7 +4833,7 @@ static __devinit int cciss_allocate_cmd_pool(ctlr_info_t *h)
return 0;
}
-static __devinit int cciss_allocate_scatterlists(ctlr_info_t *h)
+static int cciss_allocate_scatterlists(ctlr_info_t *h)
{
int i;
@@ -4843,24 +4884,24 @@ static int cciss_request_irq(ctlr_info_t *h,
irqreturn_t (*intxhandler)(int, void *))
{
if (h->msix_vector || h->msi_vector) {
- if (!request_irq(h->intr[PERF_MODE_INT], msixhandler,
- IRQF_DISABLED, h->devname, h))
+ if (!request_irq(h->intr[h->intr_mode], msixhandler,
+ 0, h->devname, h))
return 0;
dev_err(&h->pdev->dev, "Unable to get msi irq %d"
- " for %s\n", h->intr[PERF_MODE_INT],
+ " for %s\n", h->intr[h->intr_mode],
h->devname);
return -1;
}
- if (!request_irq(h->intr[PERF_MODE_INT], intxhandler,
- IRQF_DISABLED, h->devname, h))
+ if (!request_irq(h->intr[h->intr_mode], intxhandler,
+ IRQF_SHARED, h->devname, h))
return 0;
dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n",
- h->intr[PERF_MODE_INT], h->devname);
+ h->intr[h->intr_mode], h->devname);
return -1;
}
-static int __devinit cciss_kdump_soft_reset(ctlr_info_t *h)
+static int cciss_kdump_soft_reset(ctlr_info_t *h)
{
if (cciss_send_reset(h, CTLR_LUNID, CCISS_RESET_TYPE_CONTROLLER)) {
dev_warn(&h->pdev->dev, "Resetting array controller failed.\n");
@@ -4887,7 +4928,7 @@ static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h)
{
int ctlr = h->ctlr;
- free_irq(h->intr[PERF_MODE_INT], h);
+ free_irq(h->intr[h->intr_mode], h);
#ifdef CONFIG_PCI_MSI
if (h->msix_vector)
pci_disable_msix(h->pdev);
@@ -4919,8 +4960,7 @@ static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h)
* stealing all these major device numbers.
* returns the number of block devices registered.
*/
-static int __devinit cciss_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
+static int cciss_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int i;
int j = 0;
@@ -4931,6 +4971,16 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
ctlr_info_t *h;
unsigned long flags;
+ /*
+ * By default the cciss driver is used for all older HP Smart Array
+ * controllers. There are module paramaters that allow a user to
+ * override this behavior and instead use the hpsa SCSI driver. If
+ * this is the case cciss may be loaded first from the kdump initrd
+ * image and cause a kernel panic. So if reset_devices is true and
+ * cciss_allow_hpsa is set just bail.
+ */
+ if ((reset_devices) && (cciss_allow_hpsa == 1))
+ return -ENODEV;
rc = cciss_init_reset_devices(pdev);
if (rc) {
if (rc != -ENOTSUPP)
@@ -4948,11 +4998,12 @@ reinit_after_soft_reset:
i = alloc_cciss_hba(pdev);
if (i < 0)
- return -1;
+ return -ENOMEM;
h = hba[i];
h->pdev = pdev;
h->busy_initializing = 1;
+ h->intr_mode = cciss_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
INIT_LIST_HEAD(&h->cmpQ);
INIT_LIST_HEAD(&h->reqQ);
mutex_init(&h->busy_shutting_down);
@@ -5009,7 +5060,7 @@ reinit_after_soft_reset:
dev_info(&h->pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
h->devname, pdev->device, pci_name(pdev),
- h->intr[PERF_MODE_INT], dac ? "" : " not");
+ h->intr[h->intr_mode], dac ? "" : " not");
if (cciss_allocate_cmd_pool(h))
goto clean4;
@@ -5029,9 +5080,7 @@ reinit_after_soft_reset:
pci_set_drvdata(pdev, h);
/* command and error info recs zeroed out before
they are used */
- memset(h->cmd_pool_bits, 0,
- DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG)
- * sizeof(unsigned long));
+ bitmap_zero(h->cmd_pool_bits, h->nr_cmds);
h->num_luns = 0;
h->highest_lun = -1;
@@ -5056,7 +5105,7 @@ reinit_after_soft_reset:
spin_lock_irqsave(&h->lock, flags);
h->access.set_intr_mask(h, CCISS_INTR_OFF);
spin_unlock_irqrestore(&h->lock, flags);
- free_irq(h->intr[PERF_MODE_INT], h);
+ free_irq(h->intr[h->intr_mode], h);
rc = cciss_request_irq(h, cciss_msix_discard_completions,
cciss_intx_discard_completions);
if (rc) {
@@ -5126,14 +5175,15 @@ reinit_after_soft_reset:
h->cciss_max_sectors = 8192;
rebuild_lun_table(h, 1, 0);
+ cciss_engage_scsi(h);
h->busy_initializing = 0;
- return 1;
+ return 0;
clean4:
cciss_free_cmd_pool(h);
cciss_free_scatterlists(h);
cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds);
- free_irq(h->intr[PERF_MODE_INT], h);
+ free_irq(h->intr[h->intr_mode], h);
clean2:
unregister_blkdev(h->major, h->devname);
clean1:
@@ -5149,7 +5199,7 @@ clean_no_release_regions:
*/
pci_set_drvdata(pdev, NULL);
free_hba(h);
- return -1;
+ return -ENODEV;
}
static void cciss_shutdown(struct pci_dev *pdev)
@@ -5165,17 +5215,38 @@ static void cciss_shutdown(struct pci_dev *pdev)
return;
}
/* write all data in the battery backed cache to disk */
- memset(flush_buf, 0, 4);
return_code = sendcmd_withirq(h, CCISS_CACHE_FLUSH, flush_buf,
4, 0, CTLR_LUNID, TYPE_CMD);
kfree(flush_buf);
if (return_code != IO_OK)
dev_warn(&h->pdev->dev, "Error flushing cache\n");
h->access.set_intr_mask(h, CCISS_INTR_OFF);
- free_irq(h->intr[PERF_MODE_INT], h);
+ free_irq(h->intr[h->intr_mode], h);
}
-static void __devexit cciss_remove_one(struct pci_dev *pdev)
+static int cciss_enter_simple_mode(struct ctlr_info *h)
+{
+ u32 trans_support;
+
+ trans_support = readl(&(h->cfgtable->TransportSupport));
+ if (!(trans_support & SIMPLE_MODE))
+ return -ENOTSUPP;
+
+ h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
+ writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
+ writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
+ cciss_wait_for_mode_change_ack(h);
+ print_cfg_table(h);
+ if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
+ dev_warn(&h->pdev->dev, "unable to get board into simple mode\n");
+ return -ENODEV;
+ }
+ h->transMethod = CFGTBL_Trans_Simple;
+ return 0;
+}
+
+
+static void cciss_remove_one(struct pci_dev *pdev)
{
ctlr_info_t *h;
int i, j;
@@ -5254,7 +5325,7 @@ static void __devexit cciss_remove_one(struct pci_dev *pdev)
static struct pci_driver cciss_pci_driver = {
.name = "cciss",
.probe = cciss_init_one,
- .remove = __devexit_p(cciss_remove_one),
+ .remove = cciss_remove_one,
.id_table = cciss_pci_device_id, /* id_table */
.shutdown = cciss_shutdown,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-15 20:32:12 +0000