Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Brad Strand <linux@3ware.com>
- Copyright (C) 1999-2004 3ware Inc.
+ Copyright (C) 1999-2005 3ware Inc.
Kernel compatiblity By: Andre Hedrick <andre@suse.com>
Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com>
Fix data_buffer_length usage in tw_chrdev_ioctl().
Update contact information.
1.26.02.000 - Convert driver to pci_driver format.
+ 1.26.02.001 - Increase max ioctl buffer size to 512 sectors.
+ Make tw_scsi_queue() return 0 for 'Unknown scsi opcode'.
+ Fix tw_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.
*/
#include <linux/module.h>
#include "3w-xxxx.h"
/* Globals */
-#define TW_DRIVER_VERSION "1.26.02.000"
+#define TW_DRIVER_VERSION "1.26.02.001"
static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT];
static int tw_device_extension_count = 0;
static int twe_major = -1;
} /* End tw_show_stats() */
/* This function will set a devices queue depth */
-static ssize_t tw_store_queue_depth(struct device *dev, const char *buf, size_t count)
+static int tw_change_queue_depth(struct scsi_device *sdev, int queue_depth)
{
- int queue_depth;
- struct scsi_device *sdev = to_scsi_device(dev);
-
- queue_depth = simple_strtoul(buf, NULL, 0);
if (queue_depth > TW_Q_LENGTH-2)
- return -EINVAL;
+ queue_depth = TW_Q_LENGTH-2;
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
-
- return count;
-} /* End tw_store_queue_depth() */
-
-/* Create sysfs 'queue_depth' entry */
-static struct device_attribute tw_queue_depth_attr = {
- .attr = {
- .name = "queue_depth",
- .mode = S_IRUSR | S_IWUSR,
- },
- .store = tw_store_queue_depth
-};
-
-/* Device attributes initializer */
-static struct device_attribute *tw_dev_attrs[] = {
- &tw_queue_depth_attr,
- NULL,
-};
+ return queue_depth;
+} /* End tw_change_queue_depth() */
/* Create sysfs 'stats' entry */
static struct class_device_attribute tw_host_stats_attr = {
goto out;
/* Check size */
- if (data_buffer_length > TW_MAX_SECTORS * 512) {
+ if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) {
retval = -EINVAL;
goto out;
}
timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
/* Now wait for the command to complete */
- timeout = wait_event_interruptible_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
+ 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)) {
goto out2;
}
- /* Check if we timed out, got a signal, or didn't get
- an interrupt */
- if ((timeout <= 0) && (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE)) {
+ /* 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 */
- if (timeout == -ERESTARTSYS) {
- retval = timeout;
- } else {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd);
- retval = -EIO;
- }
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd);
+ retval = -EIO;
spin_lock_irqsave(tw_dev->host->host_lock, flags);
tw_dev->state[request_id] = TW_S_COMPLETED;
tw_state_request_finish(tw_dev, request_id);
tw_state_request_finish(tw_dev, request_id);
SCpnt->result = (DID_BAD_TARGET << 16);
done(SCpnt);
- goto out;
+ retval = 0;
}
if (retval) {
tw_dev->state[request_id] = TW_S_COMPLETED;
done(SCpnt);
retval = 0;
}
-out:
return retval;
} /* End tw_scsi_queue() */
/* Get the host lock for io completions */
spin_lock(tw_dev->host->host_lock);
- /* See if the interrupt matches this instance */
- if (tw_dev->tw_pci_dev->irq == (unsigned int)irq) {
+ /* Read the registers */
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
- handled = 1;
+ /* Check if this is our interrupt, otherwise bail */
+ if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT))
+ goto tw_interrupt_bail;
- /* Read the registers */
- status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+ handled = 1;
- /* Check if this is our interrupt, otherwise bail */
- if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT))
+ /* Check controller for errors */
+ if (tw_check_bits(status_reg_value)) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
+ if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
+ TW_CLEAR_ALL_INTERRUPTS(tw_dev);
goto tw_interrupt_bail;
-
- /* Check controller for errors */
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
- if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
- TW_CLEAR_ALL_INTERRUPTS(tw_dev);
- goto tw_interrupt_bail;
- }
}
+ }
- /* Handle host interrupt */
- if (status_reg_value & TW_STATUS_HOST_INTERRUPT) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n");
- TW_CLEAR_HOST_INTERRUPT(tw_dev);
- }
+ /* Handle host interrupt */
+ if (status_reg_value & TW_STATUS_HOST_INTERRUPT) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n");
+ TW_CLEAR_HOST_INTERRUPT(tw_dev);
+ }
- /* Handle attention interrupt */
- if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n");
- TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
- tw_state_request_start(tw_dev, &request_id);
- error = tw_aen_read_queue(tw_dev, request_id);
- if (error) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no);
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- }
+ /* Handle attention interrupt */
+ if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) {
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n");
+ TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
+ tw_state_request_start(tw_dev, &request_id);
+ error = tw_aen_read_queue(tw_dev, request_id);
+ if (error) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no);
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
}
+ }
- /* Handle command interrupt */
- if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) {
- /* 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) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no);
- break;
- }
- if (tw_post_command_packet(tw_dev, request_id)==0) {
- if (tw_dev->pending_head == TW_Q_LENGTH-1) {
- tw_dev->pending_head = TW_Q_START;
- } else {
- tw_dev->pending_head = tw_dev->pending_head + 1;
- }
- tw_dev->pending_request_count--;
+ /* Handle command interrupt */
+ if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) {
+ /* 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) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no);
+ break;
+ }
+ if (tw_post_command_packet(tw_dev, request_id)==0) {
+ if (tw_dev->pending_head == TW_Q_LENGTH-1) {
+ tw_dev->pending_head = TW_Q_START;
} else {
- /* If we get here, we will continue re-posting on the next command interrupt */
- break;
+ tw_dev->pending_head = tw_dev->pending_head + 1;
}
+ tw_dev->pending_request_count--;
+ } else {
+ /* If we get here, we will continue re-posting on the next command interrupt */
+ break;
}
- /* If there are no more pending requests, we mask command interrupt */
- if (tw_dev->pending_request_count == 0)
- TW_MASK_COMMAND_INTERRUPT(tw_dev);
}
-
- /* 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) {
- /* Read response queue register */
- response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
- request_id = TW_RESID_OUT(response_que.response_id);
- command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
- error = 0;
-
- /* Check for bad response */
- if (command_packet->status != 0) {
- /* If internal command, don't error, don't fill sense */
- if (tw_dev->srb[request_id] == NULL) {
- tw_decode_sense(tw_dev, request_id, 0);
- } else {
- error = tw_decode_sense(tw_dev, request_id, 1);
- }
+ /* If there are no more pending requests, we mask command interrupt */
+ if (tw_dev->pending_request_count == 0)
+ TW_MASK_COMMAND_INTERRUPT(tw_dev);
+ }
+
+ /* 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) {
+ /* Read response queue register */
+ response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
+ request_id = TW_RESID_OUT(response_que.response_id);
+ command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
+ error = 0;
+
+ /* Check for bad response */
+ if (command_packet->status != 0) {
+ /* If internal command, don't error, don't fill sense */
+ if (tw_dev->srb[request_id] == NULL) {
+ tw_decode_sense(tw_dev, request_id, 0);
+ } else {
+ error = tw_decode_sense(tw_dev, request_id, 1);
}
+ }
- /* Check for correct state */
- if (tw_dev->state[request_id] != TW_S_POSTED) {
- if (tw_dev->srb[request_id] != NULL) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no);
- error = 1;
- }
+ /* Check for correct state */
+ if (tw_dev->state[request_id] != TW_S_POSTED) {
+ if (tw_dev->srb[request_id] != NULL) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no);
+ error = 1;
}
+ }
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id);
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id);
- /* Check for internal command completion */
- if (tw_dev->srb[request_id] == NULL) {
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n");
- /* Check for chrdev ioctl completion */
- if (request_id != tw_dev->chrdev_request_id) {
- retval = tw_aen_complete(tw_dev, request_id);
- if (retval) {
- printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no);
- }
- } else {
- tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
- wake_up(&tw_dev->ioctl_wqueue);
+ /* Check for internal command completion */
+ if (tw_dev->srb[request_id] == NULL) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n");
+ /* Check for chrdev ioctl completion */
+ if (request_id != tw_dev->chrdev_request_id) {
+ retval = tw_aen_complete(tw_dev, request_id);
+ if (retval) {
+ printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no);
}
} else {
+ tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
+ wake_up(&tw_dev->ioctl_wqueue);
+ }
+ } else {
switch (tw_dev->srb[request_id]->cmnd[0]) {
- case READ_10:
- case READ_6:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n");
- break;
- case WRITE_10:
- case WRITE_6:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n");
- break;
- case TEST_UNIT_READY:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n");
- error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id);
- break;
- case INQUIRY:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n");
- error = tw_scsiop_inquiry_complete(tw_dev, request_id);
- break;
- case READ_CAPACITY:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n");
- error = tw_scsiop_read_capacity_complete(tw_dev, request_id);
- break;
- case MODE_SENSE:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n");
- error = tw_scsiop_mode_sense_complete(tw_dev, request_id);
- break;
- case SYNCHRONIZE_CACHE:
- dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n");
- break;
- default:
- printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n");
- error = 1;
- }
-
- /* If no error command was a success */
- if (error == 0) {
- tw_dev->srb[request_id]->result = (DID_OK << 16);
- }
+ case READ_10:
+ case READ_6:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n");
+ break;
+ case WRITE_10:
+ case WRITE_6:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n");
+ break;
+ case TEST_UNIT_READY:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n");
+ error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id);
+ break;
+ case INQUIRY:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n");
+ error = tw_scsiop_inquiry_complete(tw_dev, request_id);
+ break;
+ case READ_CAPACITY:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n");
+ error = tw_scsiop_read_capacity_complete(tw_dev, request_id);
+ break;
+ case MODE_SENSE:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n");
+ error = tw_scsiop_mode_sense_complete(tw_dev, request_id);
+ break;
+ case SYNCHRONIZE_CACHE:
+ dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n");
+ break;
+ default:
+ printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n");
+ error = 1;
+ }
- /* If error, command failed */
- if (error == 1) {
- /* Ask for a host reset */
- tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
- }
+ /* If no error command was a success */
+ if (error == 0) {
+ tw_dev->srb[request_id]->result = (DID_OK << 16);
+ }
- /* Now complete the io */
- if ((error != TW_ISR_DONT_COMPLETE)) {
- tw_dev->state[request_id] = TW_S_COMPLETED;
- tw_state_request_finish(tw_dev, request_id);
- tw_dev->posted_request_count--;
- tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
+ /* If error, command failed */
+ if (error == 1) {
+ /* Ask for a host reset */
+ tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
+ }
- tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
- }
+ /* Now complete the io */
+ if ((error != TW_ISR_DONT_COMPLETE)) {
+ tw_dev->state[request_id] = TW_S_COMPLETED;
+ tw_state_request_finish(tw_dev, request_id);
+ tw_dev->posted_request_count--;
+ tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
+
+ tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
}
+ }
- /* Check for valid status after each drain */
- status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
- if (tw_check_bits(status_reg_value)) {
- dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
- if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
- TW_CLEAR_ALL_INTERRUPTS(tw_dev);
- goto tw_interrupt_bail;
- }
+ /* Check for valid status after each drain */
+ status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
+ if (tw_check_bits(status_reg_value)) {
+ dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
+ if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
+ TW_CLEAR_ALL_INTERRUPTS(tw_dev);
+ goto tw_interrupt_bail;
}
}
}
}
+
tw_interrupt_bail:
spin_unlock(tw_dev->host->host_lock);
return IRQ_RETVAL(handled);
.queuecommand = tw_scsi_queue,
.eh_host_reset_handler = tw_scsi_eh_reset,
.bios_param = tw_scsi_biosparam,
+ .change_queue_depth = tw_change_queue_depth,
.can_queue = TW_Q_LENGTH-2,
.this_id = -1,
.sg_tablesize = TW_MAX_SGL_LENGTH,
.cmd_per_lun = TW_MAX_CMDS_PER_LUN,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = tw_host_attrs,
- .sdev_attrs = tw_dev_attrs,
.emulated = 1
};
scsi_remove_host(tw_dev->host);
- __tw_shutdown(tw_dev);
+ /* Unregister character device */
+ if (twe_major >= 0) {
+ unregister_chrdev(twe_major, "twe");
+ twe_major = -1;
+ }
/* Free up the IRQ */
free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
+ /* Shutdown the card */
+ __tw_shutdown(tw_dev);
+
/* Free up the mem region */
pci_release_regions(pdev);
/* Free up device extension resources */
tw_free_device_extension(tw_dev);
- /* Unregister character device */
- if (twe_major >= 0) {
- unregister_chrdev(twe_major, "twe");
- twe_major = -1;
- }
-
scsi_host_put(tw_dev->host);
pci_disable_device(pdev);
tw_device_extension_count--;
git://git.onelab.eu / linux-2.6.git / blobdiff