Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
new file mode 100644
index 0000000..a2b18f5
--- /dev/null
+++ b/drivers/scsi/3w-9xxx.c
@@ -0,0 +1,2167 @@
+/*
+ 3w-9xxx.c -- 3ware 9000 Storage Controller device driver for Linux.
+
+ Written By: Adam Radford <linuxraid@amcc.com>
+
+ Copyright (C) 2004-2005 Applied Micro Circuits 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:
+ linuxraid@amcc.com
+
+ For more information, goto:
+ http://www.amcc.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.
+*/
+
+#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 <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-9xxx.h"
+
+/* Globals */
+#define TW_DRIVER_VERSION "2.26.02.002"
+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 ("AMCC");
+MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(TW_DRIVER_VERSION);
+
+/* 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 int twa_chrdev_ioctl(struct inode *inode, 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_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, int ioctl_reset);
+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, 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);
+static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id);
+
+/* Functions */
+
+/* Show some statistics about the card */
+static ssize_t twa_show_stats(struct class_device *class_dev, char *buf)
+{
+ struct Scsi_Host *host = class_to_shost(class_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() */
+
+/* This function will set a devices queue depth */
+static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth)
+{
+ 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 twa_change_queue_depth() */
+
+/* Create sysfs 'stats' entry */
+static struct class_device_attribute twa_host_stats_attr = {
+ .attr = {
+ .name = "stats",
+ .mode = S_IRUGO,
+ },
+ .show = twa_show_stats
+};
+
+/* Host attributes initializer */
+static struct class_device_attribute *twa_host_attrs[] = {
+ &twa_host_stats_attr,
+ NULL,
+};
+
+/* File operations struct for character device */
+static struct file_operations twa_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = twa_chrdev_ioctl,
+ .open = twa_chrdev_open,
+ .release = NULL
+};
+
+/* 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 = 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;
+ 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 = 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;
+ 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];
+
+ /* 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 = 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);
+ 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)
+{
+ 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;
+ 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_dev->generic_buffer_phys[request_id];
+ command_packet->byte8_offset.param.sgl[0].length = TW_SECTOR_SIZE;
+ command_packet->size = TW_COMMAND_SIZE;
+ command_packet->byte6_offset.parameter_count = 1;
+
+ /* Setup the param */
+ param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
+ memset(param, 0, TW_SECTOR_SIZE);
+ param->table_id = TW_TIMEKEEP_TABLE | 0x8000; /* Controller time keep table */
+ param->parameter_id = 0x3; /* SchedulerTime */
+ param->parameter_size_bytes = 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 = 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 = 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;
+ }
+
+ if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory");
+ pci_free_consistent(tw_dev->tw_pci_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->working_srl = fw_on_ctlr_srl;
+ tw_dev->working_branch = fw_on_ctlr_branch;
+ tw_dev->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->working_srl = TW_BASE_FW_SRL;
+ tw_dev->working_branch = TW_BASE_FW_BRANCH;
+ tw_dev->working_build = TW_BASE_FW_BUILD;
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twa_check_srl() */
+
+/* This function handles ioctl for the character device */
+static int twa_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;
+ 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;
+ struct timeval current_time;
+ u32 current_time_ms;
+ TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)];
+ int retval = TW_IOCTL_ERROR_OS_EFAULT;
+ void __user *argp = (void __user *)arg;
+
+ /* Only let one of these through at a time */
+ if (down_interruptible(&tw_dev->ioctl_sem)) {
+ 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 * 512) {
+ 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(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);
+
+ /* See if we reset while waiting for the ioctl to complete */
+ if (test_bit(TW_IN_RESET, &tw_dev->flags)) {
+ clear_bit(TW_IN_RESET, &tw_dev->flags);
+ retval = TW_IOCTL_ERROR_OS_ERESTARTSYS;
+ goto out3;
+ }
+
+ /* 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, 0xc,
+ cmd);
+ retval = TW_IOCTL_ERROR_OS_EIO;
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ twa_free_request_id(tw_dev, request_id);
+ tw_dev->posted_request_count--;
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+ twa_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;
+ 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 compatiblity struct into ioctl data buffer */
+ tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer;
+ strncpy(tw_compat_info->driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION));
+ tw_compat_info->working_srl = tw_dev->working_srl;
+ tw_compat_info->working_branch = tw_dev->working_branch;
+ tw_compat_info->working_build = tw_dev->working_build;
+ tw_compat_info->driver_srl_high = TW_CURRENT_DRIVER_SRL;
+ tw_compat_info->driver_branch_high = TW_CURRENT_DRIVER_BRANCH;
+ tw_compat_info->driver_build_high = TW_CURRENT_DRIVER_BUILD;
+ tw_compat_info->driver_srl_low = TW_BASE_FW_SRL;
+ tw_compat_info->driver_branch_low = TW_BASE_FW_BRANCH;
+ tw_compat_info->driver_build_low = TW_BASE_FW_BUILD;
+ 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;
+ do_gettimeofday(¤t_time);
+ current_time_ms = (current_time.tv_sec * 1000) + (current_time.tv_usec / 1000);
+
+ if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || (current_time_ms >= tw_dev->ioctl_msec)) {
+ tw_dev->ioctl_sem_lock = 1;
+ tw_dev->ioctl_msec = current_time_ms + 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 = tw_dev->ioctl_msec - current_time_ms;
+ }
+ 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:
+ up(&tw_dev->ioctl_sem);
+out:
+ return retval;
+} /* End twa_chrdev_ioctl() */
+
+/* This function handles open for the character device */
+static int twa_chrdev_open(struct inode *inode, struct file *file)
+{
+ unsigned int minor_number;
+ int retval = TW_IOCTL_ERROR_OS_ENODEV;
+
+ 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) {
+ 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_SBUF_WRITE_ERROR) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "SBUF Write Error: clearing");
+ writel(TW_CONTROL_CLEAR_SBUF_WRITE_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 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 = 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])
+ 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->event_queue[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 entires 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;
+ unsigned long param_value;
+ 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 = 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 = table_id | 0x8000;
+ param->parameter_id = parameter_id;
+ param->parameter_size_bytes = parameter_size_bytes;
+ param_value = tw_dev->generic_buffer_phys[request_id];
+
+ command_packet->byte8_offset.param.sgl[0].address = param_value;
+ command_packet->byte8_offset.param.sgl[0].length = 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 = 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;
+
+ if (set_features & TW_EXTENDED_INIT_CONNECT) {
+ tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED;
+ tw_initconnect->fw_srl = current_fw_srl;
+ tw_initconnect->fw_arch_id = current_fw_arch_id;
+ tw_initconnect->fw_branch = current_fw_branch;
+ tw_initconnect->fw_build = 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 = tw_initconnect->fw_srl;
+ *fw_on_ctlr_arch_id = tw_initconnect->fw_arch_id;
+ *fw_on_ctlr_branch = tw_initconnect->fw_branch;
+ *fw_on_ctlr_build = tw_initconnect->fw_build;
+ *init_connect_result = 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] = kmalloc(sizeof(TW_Event) * TW_Q_LENGTH, GFP_KERNEL);
+ if (!tw_dev->event_queue[0]) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed");
+ goto out;
+ }
+
+ memset(tw_dev->event_queue[0], 0, sizeof(TW_Event) * TW_Q_LENGTH);
+
+ 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;
+
+ init_MUTEX(&tw_dev->ioctl_sem);
+ 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, struct pt_regs *regs)
+{
+ int request_id, error = 0;
+ u32 status_reg_value;
+ TW_Response_Queue response_que;
+ TW_Command_Full *full_command_packet;
+ TW_Command *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;
+
+ /* 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;
+ command_packet = &full_command_packet->command.oldcommand;
+ /* Check for command packet errors */
+ if (full_command_packet->command.newcommand.status != 0) {
+ if (tw_dev->srb[request_id] != 0) {
+ 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] != 0) {
+ 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] == 0) {
+ 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 {
+ twa_scsiop_execute_scsi_complete(tw_dev, request_id);
+ /* If no error command was a success */
+ if (error == 0) {
+ tw_dev->srb[request_id]->result = (DID_OK << 16);
+ }
+
+ /* If error, command failed */
+ if (error == 1) {
+ /* Ask for a host reset */
+ tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
+ }
+
+ /* Report residual bytes for single sgl */
+ if ((tw_dev->srb[request_id]->use_sg <= 1) && (full_command_packet->command.newcommand.status == 0)) {
+ if (full_command_packet->command.newcommand.sg_list[0].length < tw_dev->srb[request_id]->request_bufflen)
+ tw_dev->srb[request_id]->resid = tw_dev->srb[request_id]->request_bufflen - full_command_packet->command.newcommand.sg_list[0].length;
+ }
+
+ /* Now complete the io */
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ twa_free_request_id(tw_dev, request_id);
+ tw_dev->posted_request_count--;
+ tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
+ twa_unmap_scsi_data(tw_dev, request_id);
+ }
+
+ /* 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_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;
+
+ 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 =
+ TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id);
+ newcommand->sg_list[0].address = dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1;
+ newcommand->sg_list[0].length = length;
+ newcommand->sgl_entries__lunh =
+ TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), 1);
+ } 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 *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset));
+ sgl->address = dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1;
+ sgl->length = length;
+
+ if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4))
+ oldcommand->size += 1;
+ }
+ }
+} /* End twa_load_sgl() */
+
+/* This function will perform a pci-dma mapping for a scatter gather list */
+static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id)
+{
+ int use_sg;
+ struct scsi_cmnd *cmd = tw_dev->srb[request_id];
+ struct pci_dev *pdev = tw_dev->tw_pci_dev;
+ int retval = 0;
+
+ if (cmd->use_sg == 0)
+ goto out;
+
+ use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, DMA_BIDIRECTIONAL);
+
+ if (use_sg == 0) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list");
+ goto out;
+ }
+
+ cmd->SCp.phase = TW_PHASE_SGLIST;
+ cmd->SCp.have_data_in = use_sg;
+ retval = use_sg;
+out:
+ return retval;
+} /* End twa_map_scsi_sg_data() */
+
+/* This function will perform a pci-dma map for a single buffer */
+static dma_addr_t twa_map_scsi_single_data(TW_Device_Extension *tw_dev, int request_id)
+{
+ dma_addr_t mapping;
+ struct scsi_cmnd *cmd = tw_dev->srb[request_id];
+ struct pci_dev *pdev = tw_dev->tw_pci_dev;
+ int retval = 0;
+
+ if (cmd->request_bufflen == 0) {
+ retval = 0;
+ goto out;
+ }
+
+ mapping = pci_map_single(pdev, cmd->request_buffer, cmd->request_bufflen, DMA_BIDIRECTIONAL);
+
+ if (mapping == 0) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Failed to map page");
+ goto out;
+ }
+
+ cmd->SCp.phase = TW_PHASE_SINGLE;
+ cmd->SCp.have_data_in = mapping;
+ retval = mapping;
+out:
+ return retval;
+} /* End twa_map_scsi_single_data() */
+
+/* This function will poll for a response interrupt of a request */
+static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds)
+{
+ int retval = 1, found = 0, response_request_id;
+ TW_Response_Queue response_queue;
+ TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id];
+
+ if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) {
+ response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+ response_request_id = TW_RESID_OUT(response_queue.response_id);
+ if (request_id != response_request_id) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response");
+ goto out;
+ }
+ if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) {
+ if (full_command_packet->command.newcommand.status != 0) {
+ /* bad response */
+ twa_fill_sense(tw_dev, request_id, 0, 0);
+ goto out;
+ }
+ found = 1;
+ } else {
+ if (full_command_packet->command.oldcommand.status != 0) {
+ /* bad response */
+ twa_fill_sense(tw_dev, request_id, 0, 0);
+ goto out;
+ }
+ found = 1;
+ }
+ }
+
+ if (found)
+ retval = 0;
+out:
+ return retval;
+} /* End twa_poll_response() */
+
+/* This function will poll the status register for a flag */
+static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds)
+{
+ u32 status_reg_value;
+ unsigned long before;
+ int retval = 1;
+
+ status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
+ before = jiffies;
+
+ if (twa_check_bits(status_reg_value))
+ twa_decode_bits(tw_dev, status_reg_value);
+
+ while ((status_reg_value & flag) != flag) {
+ status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
+
+ if (twa_check_bits(status_reg_value))
+ twa_decode_bits(tw_dev, status_reg_value);
+
+ if (time_after(jiffies, before + HZ * seconds))
+ goto out;
+
+ msleep(50);
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twa_poll_status() */
+
+/* This function will poll the status register for disappearance of a flag */
+static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds)
+{
+ u32 status_reg_value;
+ unsigned long before;
+ int retval = 1;
+
+ status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
+ before = jiffies;
+
+ if (twa_check_bits(status_reg_value))
+ twa_decode_bits(tw_dev, status_reg_value);
+
+ while ((status_reg_value & flag) != 0) {
+ status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
+ if (twa_check_bits(status_reg_value))
+ twa_decode_bits(tw_dev, status_reg_value);
+
+ if (time_after(jiffies, before + HZ * seconds))
+ goto out;
+
+ msleep(50);
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twa_poll_status_gone() */
+
+/* This function will attempt to post a command packet to the board */
+static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal)
+{
+ u32 status_reg_value;
+ dma_addr_t command_que_value;
+ int retval = 1;
+
+ command_que_value = tw_dev->command_packet_phys[request_id];
+ status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
+
+ if (twa_check_bits(status_reg_value))
+ twa_decode_bits(tw_dev, status_reg_value);
+
+ if (((tw_dev->pending_request_count > 0) && (tw_dev->state[request_id] != TW_S_PENDING)) || (status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL)) {
+
+ /* Only pend internal driver commands */
+ if (!internal) {
+ retval = SCSI_MLQUEUE_HOST_BUSY;
+ goto out;
+ }
+
+ /* Couldn't post the command packet, so we do it later */
+ if (tw_dev->state[request_id] != TW_S_PENDING) {
+ tw_dev->state[request_id] = TW_S_PENDING;
+ tw_dev->pending_request_count++;
+ if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) {
+ tw_dev->max_pending_request_count = tw_dev->pending_request_count;
+ }
+ tw_dev->pending_queue[tw_dev->pending_tail] = request_id;
+ tw_dev->pending_tail = (tw_dev->pending_tail + 1) % TW_Q_LENGTH;
+ }
+ TW_UNMASK_COMMAND_INTERRUPT(tw_dev);
+ goto out;
+ } else {
+ /* We successfully posted the command packet */
+ if (sizeof(dma_addr_t) > 4) {
+ command_que_value += TW_COMMAND_OFFSET;
+ writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
+ writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4);
+ } else {
+ writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_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;
+ }
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twa_post_command_packet() */
+
+/* This function will reset a device extension */
+static int twa_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset)
+{
+ int i = 0;
+ int retval = 1;
+ unsigned long flags = 0;
+
+ set_bit(TW_IN_RESET, &tw_dev->flags);
+ TW_DISABLE_INTERRUPTS(tw_dev);
+ TW_MASK_COMMAND_INTERRUPT(tw_dev);
+ spin_lock_irqsave(tw_dev->host->host_lock, flags);
+
+ /* Abort all requests that are in progress */
+ for (i = 0; i < TW_Q_LENGTH; i++) {
+ if ((tw_dev->state[i] != TW_S_FINISHED) &&
+ (tw_dev->state[i] != TW_S_INITIAL) &&
+ (tw_dev->state[i] != TW_S_COMPLETED)) {
+ if (tw_dev->srb[i]) {
+ tw_dev->srb[i]->result = (DID_RESET << 16);
+ tw_dev->srb[i]->scsi_done(tw_dev->srb[i]);
+ twa_unmap_scsi_data(tw_dev, i);
+ }
+ }
+ }
+
+ /* Reset queues and counts */
+ for (i = 0; i < TW_Q_LENGTH; i++) {
+ tw_dev->free_queue[i] = i;
+ tw_dev->state[i] = TW_S_INITIAL;
+ }
+ tw_dev->free_head = TW_Q_START;
+ tw_dev->free_tail = TW_Q_START;
+ tw_dev->posted_request_count = 0;
+ tw_dev->pending_request_count = 0;
+ tw_dev->pending_head = TW_Q_START;
+ tw_dev->pending_tail = TW_Q_START;
+ tw_dev->reset_print = 0;
+
+ spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
+
+ if (twa_reset_sequence(tw_dev, 1))
+ goto out;
+
+ TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
+
+ /* Wake up any ioctl that was pending before the reset */
+ if ((tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE) || (ioctl_reset)) {
+ clear_bit(TW_IN_RESET, &tw_dev->flags);
+ } else {
+ tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
+ wake_up(&tw_dev->ioctl_wqueue);
+ }
+ retval = 0;
+out:
+ return retval;
+} /* End twa_reset_device_extension() */
+
+/* This function will reset a controller */
+static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset)
+{
+ int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset;
+
+ while (tries < TW_MAX_RESET_TRIES) {
+ if (do_soft_reset)
+ TW_SOFT_RESET(tw_dev);
+
+ /* Make sure controller is in a good state */
+ if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Microcontroller not ready during reset sequence");
+ do_soft_reset = 1;
+ tries++;
+ continue;
+ }
+
+ /* Empty response queue */
+ if (twa_empty_response_queue(tw_dev)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Response queue empty failed during reset sequence");
+ do_soft_reset = 1;
+ tries++;
+ continue;
+ }
+
+ flashed = 0;
+
+ /* Check for compatibility/flash */
+ if (twa_check_srl(tw_dev, &flashed)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Compatibility check failed during reset sequence");
+ do_soft_reset = 1;
+ tries++;
+ continue;
+ } else {
+ if (flashed) {
+ tries++;
+ continue;
+ }
+ }
+
+ /* Drain the AEN queue */
+ if (twa_aen_drain_queue(tw_dev, soft_reset)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x22, "AEN drain failed during reset sequence");
+ do_soft_reset = 1;
+ tries++;
+ continue;
+ }
+
+ /* If we got here, controller is in a good state */
+ retval = 0;
+ goto out;
+ }
+out:
+ return retval;
+} /* End twa_reset_sequence() */
+
+/* This funciton returns unit geometry in cylinders/heads/sectors */
+static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[])
+{
+ int heads, sectors, cylinders;
+ TW_Device_Extension *tw_dev;
+
+ tw_dev = (TW_Device_Extension *)sdev->host->hostdata;
+
+ if (capacity >= 0x200000) {
+ heads = 255;
+ sectors = 63;
+ cylinders = sector_div(capacity, heads * sectors);
+ } else {
+ heads = 64;
+ sectors = 32;
+ cylinders = sector_div(capacity, heads * sectors);
+ }
+
+ geom[0] = heads;
+ geom[1] = sectors;
+ geom[2] = cylinders;
+
+ return 0;
+} /* End twa_scsi_biosparam() */
+
+/* This is the new scsi eh reset function */
+static int twa_scsi_eh_reset(struct scsi_cmnd *SCpnt)
+{
+ TW_Device_Extension *tw_dev = NULL;
+ int retval = FAILED;
+
+ tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
+
+ spin_unlock_irq(tw_dev->host->host_lock);
+
+ tw_dev->num_resets++;
+
+ printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Unit #%d: Command (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, TW_DRIVER, 0x2c, SCpnt->device->id, SCpnt->cmnd[0]);
+
+ /* Now reset the card and some of the device extension data */
+ if (twa_reset_device_extension(tw_dev, 0)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset");
+ goto out;
+ }
+
+ retval = SUCCESS;
+out:
+ spin_lock_irq(tw_dev->host->host_lock);
+ return retval;
+} /* End twa_scsi_eh_reset() */
+
+/* This is the main scsi queue function to handle scsi opcodes */
+static int twa_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
+{
+ int request_id, retval;
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
+
+ /* Check if this FW supports luns */
+ if ((SCpnt->device->lun != 0) && (tw_dev->working_srl < TW_FW_SRL_LUNS_SUPPORTED)) {
+ SCpnt->result = (DID_BAD_TARGET << 16);
+ done(SCpnt);
+ retval = 0;
+ goto out;
+ }
+
+ /* Save done function into scsi_cmnd struct */
+ SCpnt->scsi_done = done;
+
+ /* Get a free request id */
+ twa_get_request_id(tw_dev, &request_id);
+
+ /* Save the scsi command for use by the ISR */
+ tw_dev->srb[request_id] = SCpnt;
+
+ /* Initialize phase to zero */
+ SCpnt->SCp.phase = TW_PHASE_INITIAL;
+
+ retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL);
+ switch (retval) {
+ case SCSI_MLQUEUE_HOST_BUSY:
+ twa_free_request_id(tw_dev, request_id);
+ break;
+ case 1:
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ twa_free_request_id(tw_dev, request_id);
+ SCpnt->result = (DID_ERROR << 16);
+ done(SCpnt);
+ retval = 0;
+ }
+out:
+ return retval;
+} /* End twa_scsi_queue() */
+
+/* This function hands scsi cdb's to the firmware */
+static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg)
+{
+ TW_Command_Full *full_command_packet;
+ TW_Command_Apache *command_packet;
+ u32 num_sectors = 0x0;
+ int i, sg_count;
+ struct scsi_cmnd *srb = NULL;
+ struct scatterlist *sglist = NULL;
+ u32 buffaddr = 0x0;
+ int retval = 1;
+
+ if (tw_dev->srb[request_id]) {
+ if (tw_dev->srb[request_id]->request_buffer) {
+ sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
+ }
+ srb = tw_dev->srb[request_id];
+ }
+
+ /* 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 =
+ TW_REQ_LUN_IN(srb->device->lun, request_id);
+ } else {
+ command_packet->request_id__lunl =
+ 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 (tw_dev->srb[request_id]->use_sg == 0) {
+ if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH) {
+ command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id];
+ command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH;
+ } else {
+ buffaddr = twa_map_scsi_single_data(tw_dev, request_id);
+ if (buffaddr == 0)
+ goto out;
+
+ command_packet->sg_list[0].address = buffaddr;
+ command_packet->sg_list[0].length = tw_dev->srb[request_id]->request_bufflen;
+ }
+ command_packet->sgl_entries__lunh = TW_REQ_LUN_IN((srb->device->lun >> 4), 1);
+
+ if (command_packet->sg_list[0].address & TW_ALIGNMENT_9000_SGL) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2d, "Found unaligned address during execute scsi");
+ goto out;
+ }
+ }
+
+ if (tw_dev->srb[request_id]->use_sg > 0) {
+ if ((tw_dev->srb[request_id]->use_sg == 1) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) {
+ command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id];
+ command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH;
+ } else {
+ sg_count = twa_map_scsi_sg_data(tw_dev, request_id);
+ if (sg_count == 0)
+ goto out;
+
+ for (i = 0; i < sg_count; i++) {
+ command_packet->sg_list[i].address = sg_dma_address(&sglist[i]);
+ command_packet->sg_list[i].length = sg_dma_len(&sglist[i]);
+ if (command_packet->sg_list[i].address & TW_ALIGNMENT_9000_SGL) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi");
+ goto out;
+ }
+ }
+ }
+ command_packet->sgl_entries__lunh = TW_REQ_LUN_IN((srb->device->lun >> 4), tw_dev->srb[request_id]->use_sg);
+ }
+ } else {
+ /* Internal cdb post */
+ for (i = 0; i < use_sg; i++) {
+ command_packet->sg_list[i].address = sglistarg[i].address;
+ command_packet->sg_list[i].length = sglistarg[i].length;
+ if (command_packet->sg_list[i].address & TW_ALIGNMENT_9000_SGL) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post");
+ goto out;
+ }
+ }
+ command_packet->sgl_entries__lunh = TW_REQ_LUN_IN(0, use_sg);
+ }
+
+ if (srb) {
+ if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6)
+ num_sectors = (u32)srb->cmnd[4];
+
+ if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10)
+ num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8);
+ }
+
+ /* Update sector statistic */
+ tw_dev->sector_count = num_sectors;
+ if (tw_dev->sector_count > tw_dev->max_sector_count)
+ tw_dev->max_sector_count = tw_dev->sector_count;
+
+ /* Update SG statistics */
+ if (srb) {
+ tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg;
+ 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 */
+ if (srb) {
+ retval = twa_post_command_packet(tw_dev, request_id, 0);
+ } else {
+ twa_post_command_packet(tw_dev, request_id, 1);
+ retval = 0;
+ }
+out:
+ return retval;
+} /* End twa_scsiop_execute_scsi() */
+
+/* This function completes an execute scsi operation */
+static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id)
+{
+ /* Copy the response if too small */
+ if ((tw_dev->srb[request_id]->request_buffer) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) {
+ memcpy(tw_dev->srb[request_id]->request_buffer,
+ tw_dev->generic_buffer_virt[request_id],
+ tw_dev->srb[request_id]->request_bufflen);
+ }
+} /* End twa_scsiop_execute_scsi_complete() */
+
+/* This function tells the controller to shut down */
+static void __twa_shutdown(TW_Device_Extension *tw_dev)
+{
+ /* Disable interrupts */
+ TW_DISABLE_INTERRUPTS(tw_dev);
+
+ printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no);
+
+ /* Tell the card we are shutting down */
+ if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed");
+ } else {
+ printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n");
+ }
+
+ /* Clear all interrupts just before exit */
+ TW_CLEAR_ALL_INTERRUPTS(tw_dev);
+} /* End __twa_shutdown() */
+
+/* Wrapper for __twa_shutdown */
+static void twa_shutdown(struct device *dev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
+
+ __twa_shutdown(tw_dev);
+} /* End twa_shutdown() */
+
+/* This function will look up a string */
+static char *twa_string_lookup(twa_message_type *table, unsigned int code)
+{
+ int index;
+
+ for (index = 0; ((code != table[index].code) &&
+ (table[index].text != (char *)0)); index++);
+ return(table[index].text);
+} /* End twa_string_lookup() */
+
+/* This function will perform a pci-dma unmap */
+static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id)
+{
+ struct scsi_cmnd *cmd = tw_dev->srb[request_id];
+ struct pci_dev *pdev = tw_dev->tw_pci_dev;
+
+ switch(cmd->SCp.phase) {
+ case TW_PHASE_SINGLE:
+ pci_unmap_single(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, DMA_BIDIRECTIONAL);
+ break;
+ case TW_PHASE_SGLIST:
+ pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL);
+ break;
+ }
+} /* End twa_unmap_scsi_data() */
+
+/* scsi_host_template initializer */
+static struct scsi_host_template driver_template = {
+ .module = THIS_MODULE,
+ .name = "3ware 9000 Storage Controller",
+ .queuecommand = twa_scsi_queue,
+ .eh_host_reset_handler = twa_scsi_eh_reset,
+ .bios_param = twa_scsi_biosparam,
+ .change_queue_depth = twa_change_queue_depth,
+ .can_queue = TW_Q_LENGTH-2,
+ .this_id = -1,
+ .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH,
+ .max_sectors = TW_MAX_SECTORS,
+ .cmd_per_lun = TW_MAX_CMDS_PER_LUN,
+ .use_clustering = ENABLE_CLUSTERING,
+ .shost_attrs = twa_host_attrs,
+ .emulated = 1
+};
+
+/* This function will probe and initialize a card */
+static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
+{
+ struct Scsi_Host *host = NULL;
+ TW_Device_Extension *tw_dev;
+ u32 mem_addr;
+ int retval = -ENODEV;
+
+ retval = pci_enable_device(pdev);
+ if (retval) {
+ TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device");
+ goto out_disable_device;
+ }
+
+ pci_set_master(pdev);
+
+ retval = pci_set_dma_mask(pdev, sizeof(dma_addr_t) > 4 ? DMA_64BIT_MASK : DMA_32BIT_MASK);
+ if (retval) {
+ TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask");
+ goto out_disable_device;
+ }
+
+ host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
+ if (!host) {
+ TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension");
+ retval = -ENOMEM;
+ goto out_disable_device;
+ }
+ tw_dev = (TW_Device_Extension *)host->hostdata;
+
+ memset(tw_dev, 0, sizeof(TW_Device_Extension));
+
+ /* Save values to device extension */
+ tw_dev->host = host;
+ tw_dev->tw_pci_dev = pdev;
+
+ if (twa_initialize_device_extension(tw_dev)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension");
+ goto out_free_device_extension;
+ }
+
+ /* Request IO regions */
+ retval = pci_request_regions(pdev, "3w-9xxx");
+ if (retval) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region");
+ goto out_free_device_extension;
+ }
+
+ mem_addr = pci_resource_start(pdev, 1);
+
+ /* Save base address */
+ tw_dev->base_addr = ioremap(mem_addr, PAGE_SIZE);
+ if (!tw_dev->base_addr) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap");
+ goto out_release_mem_region;
+ }
+
+ /* Disable interrupts on the card */
+ TW_DISABLE_INTERRUPTS(tw_dev);
+
+ /* Initialize the card */
+ if (twa_reset_sequence(tw_dev, 0))
+ goto out_release_mem_region;
+
+ /* Set host specific parameters */
+ host->max_id = TW_MAX_UNITS;
+ host->max_cmd_len = TW_MAX_CDB_LEN;
+
+ /* Channels aren't supported by adapter */
+ host->max_lun = TW_MAX_LUNS(tw_dev->working_srl);
+ host->max_channel = 0;
+
+ /* Register the card with the kernel SCSI layer */
+ retval = scsi_add_host(host, &pdev->dev);
+ if (retval) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed");
+ goto out_release_mem_region;
+ }
+
+ pci_set_drvdata(pdev, host);
+
+ printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%x, IRQ: %d.\n",
+ host->host_no, mem_addr, pdev->irq);
+ printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n",
+ host->host_no,
+ (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE,
+ TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH),
+ (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE,
+ TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH),
+ *(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE,
+ TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH));
+
+ /* Now setup the interrupt handler */
+ retval = request_irq(pdev->irq, twa_interrupt, SA_SHIRQ, "3w-9xxx", tw_dev);
+ if (retval) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ");
+ goto out_remove_host;
+ }
+
+ twa_device_extension_list[twa_device_extension_count] = tw_dev;
+ twa_device_extension_count++;
+
+ /* Re-enable interrupts on the card */
+ TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
+
+ /* Finally, scan the host */
+ scsi_scan_host(host);
+
+ if (twa_major == -1) {
+ if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0)
+ TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device");
+ }
+ return 0;
+
+out_remove_host:
+ scsi_remove_host(host);
+out_release_mem_region:
+ pci_release_regions(pdev);
+out_free_device_extension:
+ twa_free_device_extension(tw_dev);
+ scsi_host_put(host);
+out_disable_device:
+ pci_disable_device(pdev);
+
+ return retval;
+} /* End twa_probe() */
+
+/* This function is called to remove a device */
+static void twa_remove(struct pci_dev *pdev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
+
+ scsi_remove_host(tw_dev->host);
+
+ /* Unregister character device */
+ if (twa_major >= 0) {
+ unregister_chrdev(twa_major, "twa");
+ twa_major = -1;
+ }
+
+ /* Free up the IRQ */
+ free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
+
+ /* Shutdown the card */
+ __twa_shutdown(tw_dev);
+
+ /* Free up the mem region */
+ pci_release_regions(pdev);
+
+ /* Free up device extension resources */
+ twa_free_device_extension(tw_dev);
+
+ scsi_host_put(tw_dev->host);
+ pci_disable_device(pdev);
+ twa_device_extension_count--;
+} /* End twa_remove() */
+
+/* PCI Devices supported by this driver */
+static struct pci_device_id twa_pci_tbl[] __devinitdata = {
+ { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ { }
+};
+MODULE_DEVICE_TABLE(pci, twa_pci_tbl);
+
+/* pci_driver initializer */
+static struct pci_driver twa_driver = {
+ .name = "3w-9xxx",
+ .id_table = twa_pci_tbl,
+ .probe = twa_probe,
+ .remove = twa_remove,
+ .driver = {
+ .shutdown = twa_shutdown
+ }
+};
+
+/* This function is called on driver initialization */
+static int __init twa_init(void)
+{
+ printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION);
+
+ return pci_module_init(&twa_driver);
+} /* End twa_init() */
+
+/* This function is called on driver exit */
+static void __exit twa_exit(void)
+{
+ pci_unregister_driver(&twa_driver);
+} /* End twa_exit() */
+
+module_init(twa_init);
+module_exit(twa_exit);
+