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-rw-r--r--drivers/scsi/3w-sas.c1924
-rw-r--r--drivers/scsi/3w-sas.h396
-rw-r--r--drivers/scsi/Kconfig11
-rw-r--r--drivers/scsi/Makefile1
4 files changed, 2332 insertions, 0 deletions
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
new file mode 100644
index 00000000000..4d314d740de
--- /dev/null
+++ b/drivers/scsi/3w-sas.c
@@ -0,0 +1,1924 @@
+/*
+ 3w-sas.c -- LSI 3ware SAS/SATA-RAID Controller device driver for Linux.
+
+ Written By: Adam Radford <linuxraid@lsi.com>
+
+ Copyright (C) 2009 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; version 2 of the License.
+
+ 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.
+
+ NO WARRANTY
+ THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
+ CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
+ LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
+ MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
+ solely responsible for determining the appropriateness of using and
+ distributing the Program and assumes all risks associated with its
+ exercise of rights under this Agreement, including but not limited to
+ the risks and costs of program errors, damage to or loss of data,
+ programs or equipment, and unavailability or interruption of operations.
+
+ DISCLAIMER OF LIABILITY
+ NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
+ HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
+
+ 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
+
+ Controllers supported by this driver:
+
+ LSI 3ware 9750 6Gb/s SAS/SATA-RAID
+
+ Bugs/Comments/Suggestions should be mailed to:
+ linuxraid@lsi.com
+
+ For more information, goto:
+ http://www.lsi.com
+
+ History
+ -------
+ 3.26.02.000 - Initial driver release.
+*/
+
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/time.h>
+#include <linux/mutex.h>
+#include <linux/smp_lock.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi_cmnd.h>
+#include "3w-sas.h"
+
+/* Globals */
+#define TW_DRIVER_VERSION "3.26.02.000"
+static TW_Device_Extension *twl_device_extension_list[TW_MAX_SLOT];
+static unsigned int twl_device_extension_count;
+static int twl_major = -1;
+extern struct timezone sys_tz;
+
+/* Module parameters */
+MODULE_AUTHOR ("LSI");
+MODULE_DESCRIPTION ("LSI 3ware SAS/SATA-RAID Linux Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(TW_DRIVER_VERSION);
+
+static int use_msi;
+module_param(use_msi, int, S_IRUGO);
+MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0");
+
+/* Function prototypes */
+static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset);
+
+/* Functions */
+
+/* This function returns AENs through sysfs */
+static ssize_t twl_sysfs_aen_read(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *outbuf, loff_t offset, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct Scsi_Host *shost = class_to_shost(dev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata;
+ unsigned long flags = 0;
+ ssize_t ret;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ ret = memory_read_from_buffer(outbuf, count, &offset, tw_dev->event_queue[0], sizeof(TW_Event) * TW_Q_LENGTH);
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+
+ return ret;
+} /* End twl_sysfs_aen_read() */
+
+/* aen_read sysfs attribute initializer */
+static struct bin_attribute twl_sysfs_aen_read_attr = {
+ .attr = {
+ .name = "3ware_aen_read",
+ .mode = S_IRUSR,
+ },
+ .size = 0,
+ .read = twl_sysfs_aen_read
+};
+
+/* This function returns driver compatibility info through sysfs */
+static ssize_t twl_sysfs_compat_info(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *outbuf, loff_t offset, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct Scsi_Host *shost = class_to_shost(dev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata;
+ unsigned long flags = 0;
+ ssize_t ret;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ ret = memory_read_from_buffer(outbuf, count, &offset, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info));
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+
+ return ret;
+} /* End twl_sysfs_compat_info() */
+
+/* compat_info sysfs attribute initializer */
+static struct bin_attribute twl_sysfs_compat_info_attr = {
+ .attr = {
+ .name = "3ware_compat_info",
+ .mode = S_IRUSR,
+ },
+ .size = 0,
+ .read = twl_sysfs_compat_info
+};
+
+/* Show some statistics about the card */
+static ssize_t twl_show_stats(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *host = class_to_shost(dev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
+ unsigned long flags = 0;
+ ssize_t len;
+
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ len = snprintf(buf, PAGE_SIZE, "3w-sas Driver version: %s\n"
+ "Current commands posted: %4d\n"
+ "Max commands posted: %4d\n"
+ "Last sgl length: %4d\n"
+ "Max sgl length: %4d\n"
+ "Last sector count: %4d\n"
+ "Max sector count: %4d\n"
+ "SCSI Host Resets: %4d\n"
+ "AEN's: %4d\n",
+ TW_DRIVER_VERSION,
+ tw_dev->posted_request_count,
+ tw_dev->max_posted_request_count,
+ tw_dev->sgl_entries,
+ tw_dev->max_sgl_entries,
+ tw_dev->sector_count,
+ tw_dev->max_sector_count,
+ tw_dev->num_resets,
+ tw_dev->aen_count);
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+ return len;
+} /* End twl_show_stats() */
+
+/* This function will set a devices queue depth */
+static int twl_change_queue_depth(struct scsi_device *sdev, int queue_depth,
+ int reason)
+{
+ if (reason != SCSI_QDEPTH_DEFAULT)
+ return -EOPNOTSUPP;
+
+ if (queue_depth > TW_Q_LENGTH-2)
+ queue_depth = TW_Q_LENGTH-2;
+ scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
+ return queue_depth;
+} /* End twl_change_queue_depth() */
+
+/* stats sysfs attribute initializer */
+static struct device_attribute twl_host_stats_attr = {
+ .attr = {
+ .name = "3ware_stats",
+ .mode = S_IRUGO,
+ },
+ .show = twl_show_stats
+};
+
+/* Host attributes initializer */
+static struct device_attribute *twl_host_attrs[] = {
+ &twl_host_stats_attr,
+ NULL,
+};
+
+/* This function will look up an AEN severity string */
+static char *twl_aen_severity_lookup(unsigned char severity_code)
+{
+ char *retval = NULL;
+
+ if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) ||
+ (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG))
+ goto out;
+
+ retval = twl_aen_severity_table[severity_code];
+out:
+ return retval;
+} /* End twl_aen_severity_lookup() */
+
+/* This function will queue an event */
+static void twl_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header)
+{
+ u32 local_time;
+ struct timeval time;
+ TW_Event *event;
+ unsigned short aen;
+ char host[16];
+ char *error_str;
+
+ tw_dev->aen_count++;
+
+ /* Fill out event info */
+ event = tw_dev->event_queue[tw_dev->error_index];
+
+ host[0] = '\0';
+ if (tw_dev->host)
+ sprintf(host, " scsi%d:", tw_dev->host->host_no);
+
+ aen = le16_to_cpu(header->status_block.error);
+ memset(event, 0, sizeof(TW_Event));
+
+ event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
+ do_gettimeofday(&time);
+ local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60));
+ event->time_stamp_sec = local_time;
+ event->aen_code = aen;
+ event->retrieved = TW_AEN_NOT_RETRIEVED;
+ event->sequence_id = tw_dev->error_sequence_id;
+ tw_dev->error_sequence_id++;
+
+ /* Check for embedded error string */
+ error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]);
+
+ header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0';
+ event->parameter_len = strlen(header->err_specific_desc);
+ memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + 1 + strlen(error_str));
+ if (event->severity != TW_AEN_SEVERITY_DEBUG)
+ printk(KERN_WARNING "3w-sas:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n",
+ host,
+ twl_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)),
+ TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, error_str,
+ header->err_specific_desc);
+ else
+ tw_dev->aen_count--;
+
+ tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH;
+} /* End twl_aen_queue_event() */
+
+/* This function will attempt to post a command packet to the board */
+static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id)
+{
+ dma_addr_t command_que_value;
+
+ command_que_value = tw_dev->command_packet_phys[request_id];
+ command_que_value += TW_COMMAND_OFFSET;
+
+ /* First write upper 4 bytes */
+ writel((u32)((u64)command_que_value >> 32), TWL_HIBQPH_REG_ADDR(tw_dev));
+ /* Then the lower 4 bytes */
+ writel((u32)(command_que_value | TWL_PULL_MODE), TWL_HIBQPL_REG_ADDR(tw_dev));
+
+ tw_dev->state[request_id] = TW_S_POSTED;
+ tw_dev->posted_request_count++;
+ if (tw_dev->posted_request_count > tw_dev->max_posted_request_count)
+ tw_dev->max_posted_request_count = tw_dev->posted_request_count;
+
+ return 0;
+} /* End twl_post_command_packet() */
+
+/* This function will perform a pci-dma mapping for a scatter gather list */
+static int twl_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id)
+{
+ int use_sg;
+ struct scsi_cmnd *cmd = tw_dev->srb[request_id];
+
+ use_sg = scsi_dma_map(cmd);
+ if (!use_sg)
+ return 0;
+ else if (use_sg < 0) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Failed to map scatter gather list");
+ return 0;
+ }
+
+ cmd->SCp.phase = TW_PHASE_SGLIST;
+ cmd->SCp.have_data_in = use_sg;
+
+ return use_sg;
+} /* End twl_map_scsi_sg_data() */
+
+/* This function hands scsi cdb's to the firmware */
+static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry_ISO *sglistarg)
+{
+ TW_Command_Full *full_command_packet;
+ TW_Command_Apache *command_packet;
+ int i, sg_count;
+ struct scsi_cmnd *srb = NULL;
+ struct scatterlist *sglist = NULL, *sg;
+ int retval = 1;
+
+ if (tw_dev->srb[request_id]) {
+ srb = tw_dev->srb[request_id];
+ if (scsi_sglist(srb))
+ sglist = scsi_sglist(srb);
+ }
+
+ /* Initialize command packet */
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+ full_command_packet->header.header_desc.size_header = 128;
+ full_command_packet->header.status_block.error = 0;
+ full_command_packet->header.status_block.severity__reserved = 0;
+
+ command_packet = &full_command_packet->command.newcommand;
+ command_packet->status = 0;
+ command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI);
+
+ /* We forced 16 byte cdb use earlier */
+ if (!cdb)
+ memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN);
+ else
+ memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN);
+
+ if (srb) {
+ command_packet->unit = srb->device->id;
+ command_packet->request_id__lunl =
+ cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id));
+ } else {
+ command_packet->request_id__lunl =
+ cpu_to_le16(TW_REQ_LUN_IN(0, request_id));
+ command_packet->unit = 0;
+ }
+
+ command_packet->sgl_offset = 16;
+
+ if (!sglistarg) {
+ /* Map sglist from scsi layer to cmd packet */
+ if (scsi_sg_count(srb)) {
+ sg_count = twl_map_scsi_sg_data(tw_dev, request_id);
+ if (sg_count == 0)
+ goto out;
+
+ scsi_for_each_sg(srb, sg, sg_count, i) {
+ command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg));
+ command_packet->sg_list[i].length = TW_CPU_TO_SGL(sg_dma_len(sg));
+ }
+ command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id])));
+ }
+ } else {
+ /* Internal cdb post */
+ for (i = 0; i < use_sg; i++) {
+ command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address);
+ command_packet->sg_list[i].length = TW_CPU_TO_SGL(sglistarg[i].length);
+ }
+ command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg));
+ }
+
+ /* Update some stats */
+ if (srb) {
+ tw_dev->sector_count = scsi_bufflen(srb) / 512;
+ if (tw_dev->sector_count > tw_dev->max_sector_count)
+ tw_dev->max_sector_count = tw_dev->sector_count;
+ tw_dev->sgl_entries = scsi_sg_count(srb);
+ if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
+ tw_dev->max_sgl_entries = tw_dev->sgl_entries;
+ }
+
+ /* Now post the command to the board */
+ retval = twl_post_command_packet(tw_dev, request_id);
+
+out:
+ return retval;
+} /* End twl_scsiop_execute_scsi() */
+
+/* This function will read the aen queue from the isr */
+static int twl_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
+{
+ char cdb[TW_MAX_CDB_LEN];
+ TW_SG_Entry_ISO sglist[1];
+ TW_Command_Full *full_command_packet;
+ int retval = 1;
+
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+ memset(full_command_packet, 0, sizeof(TW_Command_Full));
+
+ /* Initialize cdb */
+ memset(&cdb, 0, TW_MAX_CDB_LEN);
+ cdb[0] = REQUEST_SENSE; /* opcode */
+ cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */
+
+ /* Initialize sglist */
+ memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
+ sglist[0].length = TW_SECTOR_SIZE;
+ sglist[0].address = tw_dev->generic_buffer_phys[request_id];
+
+ /* Mark internal command */
+ tw_dev->srb[request_id] = NULL;
+
+ /* Now post the command packet */
+ if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Post failed while reading AEN queue");
+ goto out;
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twl_aen_read_queue() */
+
+/* This function will sync firmware time with the host time */
+static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
+{
+ u32 schedulertime;
+ struct timeval utc;
+ TW_Command_Full *full_command_packet;
+ TW_Command *command_packet;
+ TW_Param_Apache *param;
+ u32 local_time;
+
+ /* Fill out the command packet */
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+ memset(full_command_packet, 0, sizeof(TW_Command_Full));
+ command_packet = &full_command_packet->command.oldcommand;
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
+ command_packet->request_id = request_id;
+ command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
+ command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
+ command_packet->size = TW_COMMAND_SIZE;
+ command_packet->byte6_offset.parameter_count = cpu_to_le16(1);
+
+ /* Setup the param */
+ param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
+ memset(param, 0, TW_SECTOR_SIZE);
+ param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */
+ param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */
+ param->parameter_size_bytes = cpu_to_le16(4);
+
+ /* Convert system time in UTC to local time seconds since last
+ Sunday 12:00AM */
+ do_gettimeofday(&utc);
+ local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
+ schedulertime = local_time - (3 * 86400);
+ schedulertime = cpu_to_le32(schedulertime % 604800);
+
+ memcpy(param->data, &schedulertime, sizeof(u32));
+
+ /* Mark internal command */
+ tw_dev->srb[request_id] = NULL;
+
+ /* Now post the command */
+ twl_post_command_packet(tw_dev, request_id);
+} /* End twl_aen_sync_time() */
+
+/* This function will assign an available request id */
+static void twl_get_request_id(TW_Device_Extension *tw_dev, int *request_id)
+{
+ *request_id = tw_dev->free_queue[tw_dev->free_head];
+ tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH;
+ tw_dev->state[*request_id] = TW_S_STARTED;
+} /* End twl_get_request_id() */
+
+/* This function will free a request id */
+static void twl_free_request_id(TW_Device_Extension *tw_dev, int request_id)
+{
+ tw_dev->free_queue[tw_dev->free_tail] = request_id;
+ tw_dev->state[request_id] = TW_S_FINISHED;
+ tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
+} /* End twl_free_request_id() */
+
+/* This function will complete an aen request from the isr */
+static int twl_aen_complete(TW_Device_Extension *tw_dev, int request_id)
+{
+ TW_Command_Full *full_command_packet;
+ TW_Command *command_packet;
+ TW_Command_Apache_Header *header;
+ unsigned short aen;
+ int retval = 1;
+
+ header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
+ tw_dev->posted_request_count--;
+ aen = le16_to_cpu(header->status_block.error);
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+ command_packet = &full_command_packet->command.oldcommand;
+
+ /* First check for internal completion of set param for time sync */
+ if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) {
+ /* Keep reading the queue in case there are more aen's */
+ if (twl_aen_read_queue(tw_dev, request_id))
+ goto out2;
+ else {
+ retval = 0;
+ goto out;
+ }
+ }
+
+ switch (aen) {
+ case TW_AEN_QUEUE_EMPTY:
+ /* Quit reading the queue if this is the last one */
+ break;
+ case TW_AEN_SYNC_TIME_WITH_HOST:
+ twl_aen_sync_time(tw_dev, request_id);
+ retval = 0;
+ goto out;
+ default:
+ twl_aen_queue_event(tw_dev, header);
+
+ /* If there are more aen's, keep reading the queue */
+ if (twl_aen_read_queue(tw_dev, request_id))
+ goto out2;
+ else {
+ retval = 0;
+ goto out;
+ }
+ }
+ retval = 0;
+out2:
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ twl_free_request_id(tw_dev, request_id);
+ clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
+out:
+ return retval;
+} /* End twl_aen_complete() */
+
+/* This function will poll for a response */
+static int twl_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds)
+{
+ unsigned long before;
+ dma_addr_t mfa;
+ u32 regh, regl;
+ u32 response;
+ int retval = 1;
+ int found = 0;
+
+ before = jiffies;
+
+ while (!found) {
+ if (sizeof(dma_addr_t) > 4) {
+ regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev));
+ regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
+ mfa = ((u64)regh << 32) | regl;
+ } else
+ mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
+
+ response = (u32)mfa;
+
+ if (TW_RESID_OUT(response) == request_id)
+ found = 1;
+
+ if (time_after(jiffies, before + HZ * seconds))
+ goto out;
+
+ msleep(50);
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twl_poll_response() */
+
+/* This function will drain the aen queue */
+static int twl_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset)
+{
+ int request_id = 0;
+ char cdb[TW_MAX_CDB_LEN];
+ TW_SG_Entry_ISO sglist[1];
+ int finished = 0, count = 0;
+ TW_Command_Full *full_command_packet;
+ TW_Command_Apache_Header *header;
+ unsigned short aen;
+ int first_reset = 0, queue = 0, retval = 1;
+
+ if (no_check_reset)
+ first_reset = 0;
+ else
+ first_reset = 1;
+
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+ memset(full_command_packet, 0, sizeof(TW_Command_Full));
+
+ /* Initialize cdb */
+ memset(&cdb, 0, TW_MAX_CDB_LEN);
+ cdb[0] = REQUEST_SENSE; /* opcode */
+ cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */
+
+ /* Initialize sglist */
+ memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
+ sglist[0].length = TW_SECTOR_SIZE;
+ sglist[0].address = tw_dev->generic_buffer_phys[request_id];
+
+ /* Mark internal command */
+ tw_dev->srb[request_id] = NULL;
+
+ do {
+ /* Send command to the board */
+ if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "Error posting request sense");
+ goto out;
+ }
+
+ /* Now poll for completion */
+ if (twl_poll_response(tw_dev, request_id, 30)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "No valid response while draining AEN queue");
+ tw_dev->posted_request_count--;
+ goto out;
+ }
+
+ tw_dev->posted_request_count--;
+ header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
+ aen = le16_to_cpu(header->status_block.error);
+ queue = 0;
+ count++;
+
+ switch (aen) {
+ case TW_AEN_QUEUE_EMPTY:
+ if (first_reset != 1)
+ goto out;
+ else
+ finished = 1;
+ break;
+ case TW_AEN_SOFT_RESET:
+ if (first_reset == 0)
+ first_reset = 1;
+ else
+ queue = 1;
+ break;
+ case TW_AEN_SYNC_TIME_WITH_HOST:
+ break;
+ default:
+ queue = 1;
+ }
+
+ /* Now queue an event info */
+ if (queue)
+ twl_aen_queue_event(tw_dev, header);
+ } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN));
+
+ if (count == TW_MAX_AEN_DRAIN)
+ goto out;
+
+ retval = 0;
+out:
+ tw_dev->state[request_id] = TW_S_INITIAL;
+ return retval;
+} /* End twl_aen_drain_queue() */
+
+/* This function will allocate memory and check if it is correctly aligned */
+static int twl_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
+{
+ int i;
+ dma_addr_t dma_handle;
+ unsigned long *cpu_addr;
+ int retval = 1;
+
+ cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle);
+ if (!cpu_addr) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed");
+ goto out;
+ }
+
+ memset(cpu_addr, 0, size*TW_Q_LENGTH);
+
+ for (i = 0; i < TW_Q_LENGTH; i++) {
+ switch(which) {
+ case 0:
+ tw_dev->command_packet_phys[i] = dma_handle+(i*size);
+ tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size));
+ break;
+ case 1:
+ tw_dev->generic_buffer_phys[i] = dma_handle+(i*size);
+ tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
+ break;
+ case 2:
+ tw_dev->sense_buffer_phys[i] = dma_handle+(i*size);
+ tw_dev->sense_buffer_virt[i] = (TW_Command_Apache_Header *)((unsigned char *)cpu_addr + (i*size));
+ break;
+ }
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twl_allocate_memory() */
+
+/* This function will load the request id and various sgls for ioctls */
+static void twl_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length)
+{
+ TW_Command *oldcommand;
+ TW_Command_Apache *newcommand;
+ TW_SG_Entry_ISO *sgl;
+ unsigned int pae = 0;
+
+ if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4))
+ pae = 1;
+
+ if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) {
+ newcommand = &full_command_packet->command.newcommand;
+ newcommand->request_id__lunl =
+ cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id));
+ if (length) {
+ newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
+ newcommand->sg_list[0].length = TW_CPU_TO_SGL(length);
+ }
+ newcommand->sgl_entries__lunh =
+ cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0));
+ } else {
+ oldcommand = &full_command_packet->command.oldcommand;
+ oldcommand->request_id = request_id;
+
+ if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) {
+ /* Load the sg list */
+ sgl = (TW_SG_Entry_ISO *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry_ISO)/4) + pae + (sizeof(dma_addr_t) > 4 ? 1 : 0));
+ sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
+ sgl->length = TW_CPU_TO_SGL(length);
+ oldcommand->size += pae;
+ oldcommand->size += sizeof(dma_addr_t) > 4 ? 1 : 0;
+ }
+ }
+} /* End twl_load_sgl() */
+
+/* This function handles ioctl for the character device
+ This interface is used by smartmontools open source software */
+static int twl_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ long timeout;
+ unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
+ dma_addr_t dma_handle;
+ int request_id = 0;
+ TW_Ioctl_Driver_Command driver_command;
+ TW_Ioctl_Buf_Apache *tw_ioctl;
+ TW_Command_Full *full_command_packet;
+ TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)];
+ int retval = -EFAULT;
+ void __user *argp = (void __user *)arg;
+
+ /* Only let one of these through at a time */
+ if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
+ retval = -EINTR;
+ goto out;
+ }
+
+ /* First copy down the driver command */
+ if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))
+ goto out2;
+
+ /* Check data buffer size */
+ if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {
+ retval = -EINVAL;
+ goto out2;
+ }
+
+ /* Hardware can only do multiple of 512 byte transfers */
+ data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;
+
+ /* Now allocate ioctl buf memory */
+ cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, &dma_handle, GFP_KERNEL);
+ if (!cpu_addr) {
+ retval = -ENOMEM;
+ goto out2;
+ }
+
+ tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr;
+
+ /* Now copy down the entire ioctl */
+ if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1))
+ goto out3;
+
+ /* See which ioctl we are doing */
+ switch (cmd) {
+ case TW_IOCTL_FIRMWARE_PASS_THROUGH:
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ twl_get_request_id(tw_dev, &request_id);
+
+ /* Flag internal command */
+ tw_dev->srb[request_id] = NULL;
+
+ /* Flag chrdev ioctl */
+ tw_dev->chrdev_request_id = request_id;
+
+ full_command_packet = (TW_Command_Full *)&tw_ioctl->firmware_command;
+
+ /* Load request id and sglist for both command types */
+ twl_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted);
+
+ memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full));
+
+ /* Now post the command packet to the controller */
+ twl_post_command_packet(tw_dev, request_id);
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+
+ timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
+
+ /* Now wait for command to complete */
+ timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
+
+ /* We timed out, and didn't get an interrupt */
+ if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) {
+ /* Now we need to reset the board */
+ printk(KERN_WARNING "3w-sas: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n",
+ tw_dev->host->host_no, TW_DRIVER, 0x6,
+ cmd);
+ retval = -EIO;
+ twl_reset_device_extension(tw_dev, 1);
+ goto out3;
+ }
+
+ /* Now copy in the command packet response */
+ memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full));
+
+ /* Now complete the io */
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ tw_dev->posted_request_count--;
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ twl_free_request_id(tw_dev, request_id);
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+ break;
+ default:
+ retval = -ENOTTY;
+ goto out3;
+ }
+
+ /* Now copy the entire response to userspace */
+ if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0)
+ retval = 0;
+out3:
+ /* Now free ioctl buf memory */
+ dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle);
+out2:
+ mutex_unlock(&tw_dev->ioctl_lock);
+out:
+ return retval;
+} /* End twl_chrdev_ioctl() */
+
+/* This function handles open for the character device */
+static int twl_chrdev_open(struct inode *inode, struct file *file)
+{
+ unsigned int minor_number;
+ int retval = -ENODEV;
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ retval = -EACCES;
+ goto out;
+ }
+
+ cycle_kernel_lock();
+ minor_number = iminor(inode);
+ if (minor_number >= twl_device_extension_count)
+ goto out;
+ retval = 0;
+out:
+ return retval;
+} /* End twl_chrdev_open() */
+
+/* File operations struct for character device */
+static const struct file_operations twl_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = twl_chrdev_ioctl,
+ .open = twl_chrdev_open,
+ .release = NULL
+};
+
+/* This function passes sense data from firmware to scsi layer */
+static int twl_fill_sense(TW_Device_Extension *tw_dev, int i, int request_id, int copy_sense, int print_host)
+{
+ TW_Command_Apache_Header *header;
+ TW_Command_Full *full_command_packet;
+ unsigned short error;
+ char *error_str;
+ int retval = 1;
+
+ header = tw_dev->sense_buffer_virt[i];
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+
+ /* Get embedded firmware error string */
+ error_str = &(header->err_specific_desc[strlen(header->err_specific_desc) + 1]);
+
+ /* Don't print error for Logical unit not supported during rollcall */
+ error = le16_to_cpu(header->status_block.error);
+ if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE) && (error != TW_ERROR_INVALID_FIELD_IN_CDB)) {
+ if (print_host)
+ printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n",
+ tw_dev->host->host_no,
+ TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
+ header->status_block.error,
+ error_str,
+ header->err_specific_desc);
+ else
+ printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s:%s.\n",
+ TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
+ header->status_block.error,
+ error_str,
+ header->err_specific_desc);
+ }
+
+ if (copy_sense) {
+ memcpy(tw_dev->srb[request_id]->sense_buffer, header->sense_data, TW_SENSE_DATA_LENGTH);
+ tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1);
+ goto out;
+ }
+out:
+ return retval;
+} /* End twl_fill_sense() */
+
+/* This function will free up device extension resources */
+static void twl_free_device_extension(TW_Device_Extension *tw_dev)
+{
+ if (tw_dev->command_packet_virt[0])
+ pci_free_consistent(tw_dev->tw_pci_dev,
+ sizeof(TW_Command_Full)*TW_Q_LENGTH,
+ tw_dev->command_packet_virt[0],
+ tw_dev->command_packet_phys[0]);
+
+ if (tw_dev->generic_buffer_virt[0])
+ pci_free_consistent(tw_dev->tw_pci_dev,
+ TW_SECTOR_SIZE*TW_Q_LENGTH,
+ tw_dev->generic_buffer_virt[0],
+ tw_dev->generic_buffer_phys[0]);
+
+ if (tw_dev->sense_buffer_virt[0])
+ pci_free_consistent(tw_dev->tw_pci_dev,
+ sizeof(TW_Command_Apache_Header)*
+ TW_Q_LENGTH,
+ tw_dev->sense_buffer_virt[0],
+ tw_dev->sense_buffer_phys[0]);
+
+ kfree(tw_dev->event_queue[0]);
+} /* End twl_free_device_extension() */
+
+/* This function will get parameter table entries from the firmware */
+static void *twl_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes)
+{
+ TW_Command_Full *full_command_packet;
+ TW_Command *command_packet;
+ TW_Param_Apache *param;
+ void *retval = NULL;
+
+ /* Setup the command packet */
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+ memset(full_command_packet, 0, sizeof(TW_Command_Full));
+ command_packet = &full_command_packet->command.oldcommand;
+
+ command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
+ command_packet->size = TW_COMMAND_SIZE;
+ command_packet->request_id = request_id;
+ command_packet->byte6_offset.block_count = cpu_to_le16(1);
+
+ /* Now setup the param */
+ param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
+ memset(param, 0, TW_SECTOR_SIZE);
+ param->table_id = cpu_to_le16(table_id | 0x8000);
+ param->parameter_id = cpu_to_le16(parameter_id);
+ param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes);
+
+ command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
+ command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
+
+ /* Post the command packet to the board */
+ twl_post_command_packet(tw_dev, request_id);
+
+ /* Poll for completion */
+ if (twl_poll_response(tw_dev, request_id, 30))
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "No valid response during get param")
+ else
+ retval = (void *)&(param->data[0]);
+
+ tw_dev->posted_request_count--;
+ tw_dev->state[request_id] = TW_S_INITIAL;
+
+ return retval;
+} /* End twl_get_param() */
+
+/* This function will send an initconnection command to controller */
+static int twl_initconnection(TW_Device_Extension *tw_dev, int message_credits,
+ u32 set_features, unsigned short current_fw_srl,
+ unsigned short current_fw_arch_id,
+ unsigned short current_fw_branch,
+ unsigned short current_fw_build,
+ unsigned short *fw_on_ctlr_srl,
+ unsigned short *fw_on_ctlr_arch_id,
+ unsigned short *fw_on_ctlr_branch,
+ unsigned short *fw_on_ctlr_build,
+ u32 *init_connect_result)
+{
+ TW_Command_Full *full_command_packet;
+ TW_Initconnect *tw_initconnect;
+ int request_id = 0, retval = 1;
+
+ /* Initialize InitConnection command packet */
+ full_command_packet = tw_dev->command_packet_virt[request_id];
+ memset(full_command_packet, 0, sizeof(TW_Command_Full));
+ full_command_packet->header.header_desc.size_header = 128;
+
+ tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand;
+ tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION);
+ tw_initconnect->request_id = request_id;
+ tw_initconnect->message_credits = cpu_to_le16(message_credits);
+ tw_initconnect->features = set_features;
+
+ /* Turn on 64-bit sgl support if we need to */
+ tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0;
+
+ tw_initconnect->features = cpu_to_le32(tw_initconnect->features);
+
+ if (set_features & TW_EXTENDED_INIT_CONNECT) {
+ tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED;
+ tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl);
+ tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id);
+ tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch);
+ tw_initconnect->fw_build = cpu_to_le16(current_fw_build);
+ } else
+ tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE;
+
+ /* Send command packet to the board */
+ twl_post_command_packet(tw_dev, reque