/drivers/scsi/3w-9xxx.c
http://github.com/mirrors/linux · C · 2329 lines · 1721 code · 328 blank · 280 comment · 332 complexity · 1ec78623aa72c07ff5d392728782460e MD5 · raw file
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- /*
- 3w-9xxx.c -- 3ware 9000 Storage Controller device driver for Linux.
- Written By: Adam Radford <aradford@gmail.com>
- Modifications By: Tom Couch
- Copyright (C) 2004-2009 Applied Micro Circuits Corporation.
- Copyright (C) 2010 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
- Bugs/Comments/Suggestions should be mailed to:
- aradford@gmail.com
- Note: This version of the driver does not contain a bundled firmware
- image.
- History
- -------
- 2.26.02.000 - Driver cleanup for kernel submission.
- 2.26.02.001 - Replace schedule_timeout() calls with msleep().
- 2.26.02.002 - Add support for PAE mode.
- Add lun support.
- Fix twa_remove() to free irq handler/unregister_chrdev()
- before shutting down card.
- Change to new 'change_queue_depth' api.
- Fix 'handled=1' ISR usage, remove bogus IRQ check.
- Remove un-needed eh_abort handler.
- Add support for embedded firmware error strings.
- 2.26.02.003 - Correctly handle single sgl's with use_sg=1.
- 2.26.02.004 - Add support for 9550SX controllers.
- 2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher.
- 2.26.02.006 - Fix 9550SX pchip reset timeout.
- Add big endian support.
- 2.26.02.007 - Disable local interrupts during kmap/unmap_atomic().
- 2.26.02.008 - Free irq handler in __twa_shutdown().
- Serialize reset code.
- Add support for 9650SE controllers.
- 2.26.02.009 - Fix dma mask setting to fallback to 32-bit if 64-bit fails.
- 2.26.02.010 - Add support for 9690SA controllers.
- 2.26.02.011 - Increase max AENs drained to 256.
- Add MSI support and "use_msi" module parameter.
- Fix bug in twa_get_param() on 4GB+.
- Use pci_resource_len() for ioremap().
- 2.26.02.012 - Add power management support.
- 2.26.02.013 - Fix bug in twa_load_sgl().
- 2.26.02.014 - Force 60 second timeout default.
- */
- #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/slab.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <linux/uaccess.h>
- #include <scsi/scsi.h>
- #include <scsi/scsi_host.h>
- #include <scsi/scsi_tcq.h>
- #include <scsi/scsi_cmnd.h>
- #include "3w-9xxx.h"
- /* Globals */
- #define TW_DRIVER_VERSION "2.26.02.014"
- static DEFINE_MUTEX(twa_chrdev_mutex);
- static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
- static unsigned int twa_device_extension_count;
- static int twa_major = -1;
- extern struct timezone sys_tz;
- /* Module parameters */
- MODULE_AUTHOR ("LSI");
- MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver");
- MODULE_LICENSE("GPL");
- MODULE_VERSION(TW_DRIVER_VERSION);
- static int use_msi = 0;
- module_param(use_msi, int, S_IRUGO);
- MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0");
- /* Function prototypes */
- static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header);
- static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id);
- static char *twa_aen_severity_lookup(unsigned char severity_code);
- static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id);
- static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
- static int twa_chrdev_open(struct inode *inode, struct file *file);
- static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host);
- static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id);
- static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id);
- static int twa_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);
- static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length);
- static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds);
- static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds);
- static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal);
- static int twa_reset_device_extension(TW_Device_Extension *tw_dev);
- static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset);
- static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
- unsigned char *cdb, int use_sg,
- TW_SG_Entry *sglistarg);
- static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id);
- static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code);
- /* Functions */
- /* Show some statistics about the card */
- static ssize_t twa_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-9xxx Driver version: %s\n"
- "Current commands posted: %4d\n"
- "Max commands posted: %4d\n"
- "Current pending commands: %4d\n"
- "Max pending commands: %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->pending_request_count,
- tw_dev->max_pending_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 twa_show_stats() */
- /* Create sysfs 'stats' entry */
- static struct device_attribute twa_host_stats_attr = {
- .attr = {
- .name = "stats",
- .mode = S_IRUGO,
- },
- .show = twa_show_stats
- };
- /* Host attributes initializer */
- static struct device_attribute *twa_host_attrs[] = {
- &twa_host_stats_attr,
- NULL,
- };
- /* File operations struct for character device */
- static const struct file_operations twa_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = twa_chrdev_ioctl,
- .open = twa_chrdev_open,
- .release = NULL,
- .llseek = noop_llseek,
- };
- /*
- * The controllers use an inline buffer instead of a mapped SGL for small,
- * single entry buffers. Note that we treat a zero-length transfer like
- * a mapped SGL.
- */
- static bool twa_command_mapped(struct scsi_cmnd *cmd)
- {
- return scsi_sg_count(cmd) != 1 ||
- scsi_bufflen(cmd) >= TW_MIN_SGL_LENGTH;
- }
- /* This function will complete an aen request from the isr */
- static int twa_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 (twa_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:
- twa_aen_sync_time(tw_dev, request_id);
- retval = 0;
- goto out;
- default:
- twa_aen_queue_event(tw_dev, header);
- /* If there are more aen's, keep reading the queue */
- if (twa_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;
- twa_free_request_id(tw_dev, request_id);
- clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
- out:
- return retval;
- } /* End twa_aen_complete() */
- /* This function will drain aen queue */
- static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset)
- {
- int request_id = 0;
- unsigned char cdb[TW_MAX_CDB_LEN];
- TW_SG_Entry 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));
- sglist[0].length = TW_SECTOR_SIZE;
- sglist[0].address = tw_dev->generic_buffer_phys[request_id];
- if (sglist[0].address & TW_ALIGNMENT_9000_SGL) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain");
- goto out;
- }
- /* Mark internal command */
- tw_dev->srb[request_id] = NULL;
- do {
- /* Send command to the board */
- if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense");
- goto out;
- }
- /* Now poll for completion */
- if (twa_poll_response(tw_dev, request_id, 30)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "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)
- twa_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 twa_aen_drain_queue() */
- /* This function will queue an event */
- static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header)
- {
- u32 local_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];
- /* Check for clobber */
- host[0] = '\0';
- if (tw_dev->host) {
- sprintf(host, " scsi%d:", tw_dev->host->host_no);
- if (event->retrieved == TW_AEN_NOT_RETRIEVED)
- tw_dev->aen_clobber = 1;
- }
- aen = le16_to_cpu(header->status_block.error);
- memset(event, 0, sizeof(TW_Event));
- event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
- /* event->time_stamp_sec overflows in y2106 */
- local_time = (u32)(ktime_get_real_seconds() - (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 + (error_str[0] == '\0' ? 0 : (1 + strlen(error_str))));
- if (event->severity != TW_AEN_SEVERITY_DEBUG)
- printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n",
- host,
- twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)),
- TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen,
- error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str,
- header->err_specific_desc);
- else
- tw_dev->aen_count--;
- if ((tw_dev->error_index + 1) == TW_Q_LENGTH)
- tw_dev->event_queue_wrapped = 1;
- tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH;
- } /* End twa_aen_queue_event() */
- /* This function will read the aen queue from the isr */
- static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
- {
- unsigned char cdb[TW_MAX_CDB_LEN];
- TW_SG_Entry 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));
- 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 (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue");
- goto out;
- }
- retval = 0;
- out:
- return retval;
- } /* End twa_aen_read_queue() */
- /* This function will look up an AEN severity string */
- static char *twa_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 = twa_aen_severity_table[severity_code];
- out:
- return retval;
- } /* End twa_aen_severity_lookup() */
- /* This function will sync firmware time with the host time */
- static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
- {
- u32 schedulertime;
- TW_Command_Full *full_command_packet;
- TW_Command *command_packet;
- TW_Param_Apache *param;
- time64_t 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 = cpu_to_le32(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 */
- local_time = (ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60));
- div_u64_rem(local_time - (3 * 86400), 604800, &schedulertime);
- 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 */
- twa_post_command_packet(tw_dev, request_id, 1);
- } /* End twa_aen_sync_time() */
- /* This function will allocate memory and check if it is correctly aligned */
- static int twa_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 = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev,
- size * TW_Q_LENGTH, &dma_handle, GFP_KERNEL);
- if (!cpu_addr) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed");
- goto out;
- }
- if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory");
- dma_free_coherent(&tw_dev->tw_pci_dev->dev, size * TW_Q_LENGTH,
- cpu_addr, dma_handle);
- 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;
- }
- }
- retval = 0;
- out:
- return retval;
- } /* End twa_allocate_memory() */
- /* This function will check the status register for unexpected bits */
- static int twa_check_bits(u32 status_reg_value)
- {
- int retval = 1;
- if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS)
- goto out;
- if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0)
- goto out;
- retval = 0;
- out:
- return retval;
- } /* End twa_check_bits() */
- /* This function will check the srl and decide if we are compatible */
- static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed)
- {
- int retval = 1;
- unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0;
- unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0;
- u32 init_connect_result = 0;
- if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS,
- TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL,
- TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH,
- TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl,
- &fw_on_ctlr_arch_id, &fw_on_ctlr_branch,
- &fw_on_ctlr_build, &init_connect_result)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL");
- goto out;
- }
- tw_dev->tw_compat_info.working_srl = fw_on_ctlr_srl;
- tw_dev->tw_compat_info.working_branch = fw_on_ctlr_branch;
- tw_dev->tw_compat_info.working_build = fw_on_ctlr_build;
- /* Try base mode compatibility */
- if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) {
- if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS,
- TW_EXTENDED_INIT_CONNECT,
- TW_BASE_FW_SRL, TW_9000_ARCH_ID,
- TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD,
- &fw_on_ctlr_srl, &fw_on_ctlr_arch_id,
- &fw_on_ctlr_branch, &fw_on_ctlr_build,
- &init_connect_result)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL");
- goto out;
- }
- if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) {
- if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware");
- } else {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver");
- }
- goto out;
- }
- tw_dev->tw_compat_info.working_srl = TW_BASE_FW_SRL;
- tw_dev->tw_compat_info.working_branch = TW_BASE_FW_BRANCH;
- tw_dev->tw_compat_info.working_build = TW_BASE_FW_BUILD;
- }
- /* Load rest of compatibility struct */
- strlcpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION,
- sizeof(tw_dev->tw_compat_info.driver_version));
- tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL;
- tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH;
- tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD;
- tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL;
- tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH;
- tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD;
- tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl;
- tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch;
- tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build;
- retval = 0;
- out:
- return retval;
- } /* End twa_check_srl() */
- /* This function handles ioctl for the character device */
- static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
- {
- struct inode *inode = file_inode(file);
- long timeout;
- unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
- dma_addr_t dma_handle;
- int request_id = 0;
- unsigned int sequence_id = 0;
- unsigned char event_index, start_index;
- TW_Ioctl_Driver_Command driver_command;
- TW_Ioctl_Buf_Apache *tw_ioctl;
- TW_Lock *tw_lock;
- TW_Command_Full *full_command_packet;
- TW_Compatibility_Info *tw_compat_info;
- TW_Event *event;
- ktime_t current_time;
- TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)];
- int retval = TW_IOCTL_ERROR_OS_EFAULT;
- void __user *argp = (void __user *)arg;
- mutex_lock(&twa_chrdev_mutex);
- /* Only let one of these through at a time */
- if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
- retval = TW_IOCTL_ERROR_OS_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 = TW_IOCTL_ERROR_OS_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 = TW_IOCTL_ERROR_OS_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);
- twa_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_ioctl->firmware_command;
- /* Load request id and sglist for both command types */
- twa_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 */
- twa_post_command_packet(tw_dev, request_id, 1);
- 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-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n",
- tw_dev->host->host_no, TW_DRIVER, 0x37,
- cmd);
- retval = TW_IOCTL_ERROR_OS_EIO;
- twa_reset_device_extension(tw_dev);
- 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;
- twa_free_request_id(tw_dev, request_id);
- spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
- break;
- case TW_IOCTL_GET_COMPATIBILITY_INFO:
- tw_ioctl->driver_command.status = 0;
- /* Copy compatibility struct into ioctl data buffer */
- tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer;
- memcpy(tw_compat_info, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info));
- break;
- case TW_IOCTL_GET_LAST_EVENT:
- if (tw_dev->event_queue_wrapped) {
- if (tw_dev->aen_clobber) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
- tw_dev->aen_clobber = 0;
- } else
- tw_ioctl->driver_command.status = 0;
- } else {
- if (!tw_dev->error_index) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
- break;
- }
- tw_ioctl->driver_command.status = 0;
- }
- event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH;
- memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
- tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
- break;
- case TW_IOCTL_GET_FIRST_EVENT:
- if (tw_dev->event_queue_wrapped) {
- if (tw_dev->aen_clobber) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
- tw_dev->aen_clobber = 0;
- } else
- tw_ioctl->driver_command.status = 0;
- event_index = tw_dev->error_index;
- } else {
- if (!tw_dev->error_index) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
- break;
- }
- tw_ioctl->driver_command.status = 0;
- event_index = 0;
- }
- memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
- tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
- break;
- case TW_IOCTL_GET_NEXT_EVENT:
- event = (TW_Event *)tw_ioctl->data_buffer;
- sequence_id = event->sequence_id;
- tw_ioctl->driver_command.status = 0;
- if (tw_dev->event_queue_wrapped) {
- if (tw_dev->aen_clobber) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
- tw_dev->aen_clobber = 0;
- }
- start_index = tw_dev->error_index;
- } else {
- if (!tw_dev->error_index) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
- break;
- }
- start_index = 0;
- }
- event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH;
- if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) {
- if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)
- tw_dev->aen_clobber = 1;
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
- break;
- }
- memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
- tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
- break;
- case TW_IOCTL_GET_PREVIOUS_EVENT:
- event = (TW_Event *)tw_ioctl->data_buffer;
- sequence_id = event->sequence_id;
- tw_ioctl->driver_command.status = 0;
- if (tw_dev->event_queue_wrapped) {
- if (tw_dev->aen_clobber) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
- tw_dev->aen_clobber = 0;
- }
- start_index = tw_dev->error_index;
- } else {
- if (!tw_dev->error_index) {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
- break;
- }
- start_index = 0;
- }
- event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH;
- if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) {
- if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)
- tw_dev->aen_clobber = 1;
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
- break;
- }
- memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
- tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
- break;
- case TW_IOCTL_GET_LOCK:
- tw_lock = (TW_Lock *)tw_ioctl->data_buffer;
- current_time = ktime_get();
- if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) ||
- ktime_after(current_time, tw_dev->ioctl_time)) {
- tw_dev->ioctl_sem_lock = 1;
- tw_dev->ioctl_time = ktime_add_ms(current_time, tw_lock->timeout_msec);
- tw_ioctl->driver_command.status = 0;
- tw_lock->time_remaining_msec = tw_lock->timeout_msec;
- } else {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED;
- tw_lock->time_remaining_msec = ktime_ms_delta(tw_dev->ioctl_time, current_time);
- }
- break;
- case TW_IOCTL_RELEASE_LOCK:
- if (tw_dev->ioctl_sem_lock == 1) {
- tw_dev->ioctl_sem_lock = 0;
- tw_ioctl->driver_command.status = 0;
- } else {
- tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED;
- }
- break;
- default:
- retval = TW_IOCTL_ERROR_OS_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:
- mutex_unlock(&twa_chrdev_mutex);
- return retval;
- } /* End twa_chrdev_ioctl() */
- /* This function handles open for the character device */
- /* NOTE that this function will race with remove. */
- static int twa_chrdev_open(struct inode *inode, struct file *file)
- {
- unsigned int minor_number;
- int retval = TW_IOCTL_ERROR_OS_ENODEV;
- if (!capable(CAP_SYS_ADMIN)) {
- retval = -EACCES;
- goto out;
- }
- minor_number = iminor(inode);
- if (minor_number >= twa_device_extension_count)
- goto out;
- retval = 0;
- out:
- return retval;
- } /* End twa_chrdev_open() */
- /* This function will print readable messages from status register errors */
- static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value)
- {
- int retval = 1;
- /* Check for various error conditions and handle them appropriately */
- if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing");
- writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
- }
- if (status_reg_value & TW_STATUS_PCI_ABORT) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing");
- writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev));
- pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT);
- }
- if (status_reg_value & TW_STATUS_QUEUE_ERROR) {
- if (((tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9650SE) &&
- (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9690SA)) ||
- (!test_bit(TW_IN_RESET, &tw_dev->flags)))
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing");
- writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
- }
- if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) {
- if (tw_dev->reset_print == 0) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing");
- tw_dev->reset_print = 1;
- }
- goto out;
- }
- retval = 0;
- out:
- return retval;
- } /* End twa_decode_bits() */
- /* This function will empty the response queue */
- static int twa_empty_response_queue(TW_Device_Extension *tw_dev)
- {
- u32 status_reg_value, response_que_value;
- int count = 0, retval = 1;
- status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
- while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) {
- response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
- status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
- count++;
- }
- if (count == TW_MAX_RESPONSE_DRAIN)
- goto out;
- retval = 0;
- out:
- return retval;
- } /* End twa_empty_response_queue() */
- /* This function will clear the pchip/response queue on 9550SX */
- static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev)
- {
- u32 response_que_value = 0;
- unsigned long before;
- int retval = 1;
- if (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9000) {
- before = jiffies;
- while ((response_que_value & TW_9550SX_DRAIN_COMPLETED) != TW_9550SX_DRAIN_COMPLETED) {
- response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev));
- msleep(1);
- if (time_after(jiffies, before + HZ * 30))
- goto out;
- }
- /* P-chip settle time */
- msleep(500);
- retval = 0;
- } else
- retval = 0;
- out:
- return retval;
- } /* End twa_empty_response_queue_large() */
- /* This function passes sense keys from firmware to scsi layer */
- static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host)
- {
- TW_Command_Full *full_command_packet;
- unsigned short error;
- int retval = 1;
- char *error_str;
- full_command_packet = tw_dev->command_packet_virt[request_id];
- /* Check for embedded error string */
- error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]);
- /* Don't print error for Logical unit not supported during rollcall */
- error = le16_to_cpu(full_command_packet->header.status_block.error);
- if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) {
- if (print_host)
- printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n",
- tw_dev->host->host_no,
- TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
- full_command_packet->header.status_block.error,
- error_str[0] == '\0' ?
- twa_string_lookup(twa_error_table,
- full_command_packet->header.status_block.error) : error_str,
- full_command_packet->header.err_specific_desc);
- else
- printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n",
- TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
- full_command_packet->header.status_block.error,
- error_str[0] == '\0' ?
- twa_string_lookup(twa_error_table,
- full_command_packet->header.status_block.error) : error_str,
- full_command_packet->header.err_specific_desc);
- }
- if (copy_sense) {
- memcpy(tw_dev->srb[request_id]->sense_buffer, full_command_packet->header.sense_data, TW_SENSE_DATA_LENGTH);
- tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1);
- retval = TW_ISR_DONT_RESULT;
- goto out;
- }
- retval = 0;
- out:
- return retval;
- } /* End twa_fill_sense() */
- /* This function will free up device extension resources */
- static void twa_free_device_extension(TW_Device_Extension *tw_dev)
- {
- if (tw_dev->command_packet_virt[0])
- dma_free_coherent(&tw_dev->tw_pci_dev->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])
- dma_free_coherent(&tw_dev->tw_pci_dev->dev,
- TW_SECTOR_SIZE * TW_Q_LENGTH,
- tw_dev->generic_buffer_virt[0],
- tw_dev->generic_buffer_phys[0]);
- kfree(tw_dev->event_queue[0]);
- } /* End twa_free_device_extension() */
- /* This function will free a request id */
- static void twa_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 twa_free_request_id() */
- /* This function will get parameter table entries from the firmware */
- static void *twa_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 = cpu_to_le32(TW_SECTOR_SIZE);
- /* Post the command packet to the board */
- twa_post_command_packet(tw_dev, request_id, 1);
- /* Poll for completion */
- if (twa_poll_response(tw_dev, request_id, 30))
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "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 twa_get_param() */
- /* This function will assign an available request id */
- static void twa_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 twa_get_request_id() */
- /* This function will send an initconnection command to controller */
- static int twa_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 */
- twa_post_command_packet(tw_dev, request_id, 1);
- /* Poll for completion */
- if (twa_poll_response(tw_dev, request_id, 30)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection");
- } else {
- if (set_features & TW_EXTENDED_INIT_CONNECT) {
- *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl);
- *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id);
- *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch);
- *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build);
- *init_connect_result = le32_to_cpu(tw_initconnect->result);
- }
- retval = 0;
- }
- tw_dev->posted_request_count--;
- tw_dev->state[request_id] = TW_S_INITIAL;
- return retval;
- } /* End twa_initconnection() */
- /* This function will initialize the fields of a device extension */
- static int twa_initialize_device_extension(TW_Device_Extension *tw_dev)
- {
- int i, retval = 1;
- /* Initialize command packet buffers */
- if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed");
- goto out;
- }
- /* Initialize generic buffer */
- if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed");
- goto out;
- }
- /* Allocate event info space */
- tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL);
- if (!tw_dev->event_queue[0]) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed");
- goto out;
- }
- for (i = 0; i < TW_Q_LENGTH; i++) {
- tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
- tw_dev->free_queue[i] = i;
- tw_dev->state[i] = TW_S_INITIAL;
- }
- tw_dev->pending_head = TW_Q_START;
- tw_dev->pending_tail = TW_Q_START;
- tw_dev->free_head = TW_Q_START;
- tw_dev->free_tail = TW_Q_START;
- tw_dev->error_sequence_id = 1;
- tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
- mutex_init(&tw_dev->ioctl_lock);
- init_waitqueue_head(&tw_dev->ioctl_wqueue);
- retval = 0;
- out:
- return retval;
- } /* End twa_initialize_device_extension() */
- /* This function is the interrupt service routine */
- static irqreturn_t twa_interrupt(int irq, void *dev_instance)
- {
- int request_id, error = 0;
- u32 status_reg_value;
- TW_Response_Queue response_que;
- TW_Command_Full *full_command_packet;
- TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
- int handled = 0;
- /* Get the per adapter lock */
- spin_lock(tw_dev->host->host_lock);
- /* Read the registers */
- status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
- /* Check if this is our interrupt, otherwise bail */
- if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT))
- goto twa_interrupt_bail;
- handled = 1;
- /* If we are resetting, bail */
- if (test_bit(TW_IN_RESET, &tw_dev->flags))
- goto twa_interrupt_bail;
- /* Check controller for errors */
- if (twa_check_bits(status_reg_value)) {
- if (twa_decode_bits(tw_dev, status_reg_value)) {
- TW_CLEAR_ALL_INTERRUPTS(tw_dev);
- goto twa_interrupt_bail;
- }
- }
- /* Handle host interrupt */
- if (status_reg_value & TW_STATUS_HOST_INTERRUPT)
- TW_CLEAR_HOST_INTERRUPT(tw_dev);
- /* Handle attention interrupt */
- if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) {
- TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
- if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) {
- twa_get_request_id(tw_dev, &request_id);
- error = twa_aen_read_queue(tw_dev, request_id);
- if (error) {
- tw_dev->state[request_id] = TW_S_COMPLETED;
- twa_free_request_id(tw_dev, request_id);
- clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
- }
- }
- }
- /* Handle command interrupt */
- if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) {
- TW_MASK_COMMAND_INTERRUPT(tw_dev);
- /* Drain as many pending commands as we can */
- while (tw_dev->pending_request_count > 0) {
- request_id = tw_dev->pending_queue[tw_dev->pending_head];
- if (tw_dev->state[request_id] != TW_S_PENDING) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending");
- TW_CLEAR_ALL_INTERRUPTS(tw_dev);
- goto twa_interrupt_bail;
- }
- if (twa_post_command_packet(tw_dev, request_id, 1)==0) {
- tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH;
- tw_dev->pending_request_count--;
- } else {
- /* If we get here, we will continue re-posting on the next command interrupt */
- break;
- }
- }
- }
- /* Handle response interrupt */
- if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) {
- /* Drain the response queue from the board */
- while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
- /* Complete the response */
- response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
- request_id = TW_RESID_OUT(response_que.response_id);
- full_command_packet = tw_dev->command_packet_virt[request_id];
- error = 0;
- /* Check for command packet errors */
- if (full_command_packet->command.newcommand.status != 0) {
- if (tw_dev->srb[request_id] != NULL) {
- error = twa_fill_sense(tw_dev, request_id, 1, 1);
- } else {
- /* Skip ioctl error prints */
- if (request_id != tw_dev->chrdev_request_id) {
- error = twa_fill_sense(tw_dev, request_id, 0, 1);
- }
- }
- }
- /* Check for correct state */
- if (tw_dev->state[request_id] != TW_S_POSTED) {
- if (tw_dev->srb[request_id] != NULL) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted");
- TW_CLEAR_ALL_INTERRUPTS(tw_dev);
- goto twa_interrupt_bail;
- }
- }
- /* Check for internal command completion */
- if (tw_dev->srb[request_id] == NULL) {
- if (request_id != tw_dev->chrdev_request_id) {
- if (twa_aen_complete(tw_dev, request_id))
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt");
- } else {
- tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
- wake_up(&tw_dev->ioctl_wqueue);
- }
- } else {
- struct scsi_cmnd *cmd;
- cmd = tw_dev->srb[request_id];
- twa_scsiop_execute_scsi_complete(tw_dev, request_id);
- /* If no error command was a success */
- if (error == 0) {
- cmd->result = (DID_OK << 16);
- }
- /* If error, command failed */
- if (error == 1) {
- /* Ask for a host reset */
- cmd->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
- }
- /* Report residual bytes for single sgl */
- if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) {
- if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id]))
- scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length);
- }
- /* Now complete the io */
- if (twa_command_mapped(cmd))
- scsi_dma_unmap(cmd);
- cmd->scsi_done(cmd);
- tw_dev->state[request_id] = TW_S_COMPLETED;
- twa_free_request_id(tw_dev, request_id);
- tw_dev->posted_request_count--;
- }
- /* Check for valid status after each drain */
- status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
- if (twa_check_bits(status_reg_value)) {
- if (twa_decode_bits(tw_dev, status_reg_value)) {
- TW_CLEAR_ALL_INTERRUPTS(tw_dev);
- goto twa_interrupt_bail;
- }
- }
- }
- }
- twa_interrupt_bail:
- spin_unlock(tw_dev->host->host_lock);
- return IRQ_RETVAL(handled);
- } /* End twa_interrupt() */
- /* This function will load the request id and various sgls for ioctls */
- static void twa_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 *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 = cpu_to_le32(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 */
- if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)
- sgl = (TW_SG_Entry *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry)/4) + pae);
- else
- sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset));
- sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
- sgl->length = cpu_to_le32(length);
- oldcommand->size += pae;
- }
- }
- } /* End twa_load_sg…