Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 2167 insertions, 0 deletions

diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
new file mode 100644
index 00000000000..a2b18f5a4f9
--- /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(&current_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,