static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
static int cciss_revalidate(struct gendisk *disk);
-static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk);
+static int rebuild_lun_table(ctlr_info_t *h, int first_time);
static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
int clear_all);
int withirq, sector_t total_size,
unsigned int block_size, InquiryData_struct *inq_buff,
drive_info_struct *drv);
-static void cciss_getgeometry(int cntl_num);
static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
__u32);
static void start_io(ctlr_info_t *h);
return 0;
}
+ case CCISS_DEREGDISK:
+ case CCISS_REGNEWD:
case CCISS_REVALIDVOLS:
- return rebuild_lun_table(host, NULL);
+ return rebuild_lun_table(host, 0);
case CCISS_GETLUNINFO:{
LogvolInfo_struct luninfo;
return -EFAULT;
return 0;
}
- case CCISS_DEREGDISK:
- return rebuild_lun_table(host, disk);
-
- case CCISS_REGNEWD:
- return rebuild_lun_table(host, NULL);
-
case CCISS_PASSTHRU:
{
IOCTL_Command_struct iocommand;
if (ioc->Request.Type.Direction == XFER_WRITE) {
if (copy_from_user
(buff[sg_used], data_ptr, sz)) {
- status = -ENOMEM;
+ status = -EFAULT;
goto cleanup1;
}
} else {
h->next_to_run = curr_queue;
break;
}
- } else {
- curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
}
}
}
spin_unlock_irqrestore(&h->lock, flags);
}
+/* This function gets the serial number of a logical drive via
+ * inquiry page 0x83. Serial no. is 16 bytes. If the serial
+ * number cannot be had, for whatever reason, 16 bytes of 0xff
+ * are returned instead.
+ */
+static void cciss_get_serial_no(int ctlr, int logvol, int withirq,
+ unsigned char *serial_no, int buflen)
+{
+#define PAGE_83_INQ_BYTES 64
+ int rc;
+ unsigned char *buf;
+
+ if (buflen > 16)
+ buflen = 16;
+ memset(serial_no, 0xff, buflen);
+ buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL);
+ if (!buf)
+ return;
+ memset(serial_no, 0, buflen);
+ if (withirq)
+ rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf,
+ PAGE_83_INQ_BYTES, 1, logvol, 0x83, TYPE_CMD);
+ else
+ rc = sendcmd(CISS_INQUIRY, ctlr, buf,
+ PAGE_83_INQ_BYTES, 1, logvol, 0x83, NULL, TYPE_CMD);
+ if (rc == IO_OK)
+ memcpy(serial_no, &buf[8], buflen);
+ kfree(buf);
+ return;
+}
+
+static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
+ int drv_index)
+{
+ disk->queue = blk_init_queue(do_cciss_request, &h->lock);
+ sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
+ disk->major = h->major;
+ disk->first_minor = drv_index << NWD_SHIFT;
+ disk->fops = &cciss_fops;
+ disk->private_data = &h->drv[drv_index];
+
+ /* Set up queue information */
+ blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask);
+
+ /* This is a hardware imposed limit. */
+ blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
+
+ /* This is a limit in the driver and could be eliminated. */
+ blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
+
+ blk_queue_max_sectors(disk->queue, h->cciss_max_sectors);
+
+ blk_queue_softirq_done(disk->queue, cciss_softirq_done);
+
+ disk->queue->queuedata = h;
+
+ blk_queue_hardsect_size(disk->queue,
+ h->drv[drv_index].block_size);
+
+ /* Make sure all queue data is written out before */
+ /* setting h->drv[drv_index].queue, as setting this */
+ /* allows the interrupt handler to start the queue */
+ wmb();
+ h->drv[drv_index].queue = disk->queue;
+ add_disk(disk);
+}
+
/* This function will check the usage_count of the drive to be updated/added.
- * If the usage_count is zero then the drive information will be updated and
- * the disk will be re-registered with the kernel. If not then it will be
- * left alone for the next reboot. The exception to this is disk 0 which
- * will always be left registered with the kernel since it is also the
- * controller node. Any changes to disk 0 will show up on the next
- * reboot.
+ * If the usage_count is zero and it is a heretofore unknown drive, or,
+ * the drive's capacity, geometry, or serial number has changed,
+ * then the drive information will be updated and the disk will be
+ * re-registered with the kernel. If these conditions don't hold,
+ * then it will be left alone for the next reboot. The exception to this
+ * is disk 0 which will always be left registered with the kernel since it
+ * is also the controller node. Any changes to disk 0 will show up on
+ * the next reboot.
*/
-static void cciss_update_drive_info(int ctlr, int drv_index)
+static void cciss_update_drive_info(int ctlr, int drv_index, int first_time)
{
ctlr_info_t *h = hba[ctlr];
struct gendisk *disk;
sector_t total_size;
unsigned long flags = 0;
int ret = 0;
+ drive_info_struct *drvinfo;
+ int was_only_controller_node;
+
+ /* Get information about the disk and modify the driver structure */
+ inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
+ drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL);
+ if (inq_buff == NULL || drvinfo == NULL)
+ goto mem_msg;
+
+ /* See if we're trying to update the "controller node"
+ * this will happen the when the first logical drive gets
+ * created by ACU.
+ */
+ was_only_controller_node = (drv_index == 0 &&
+ h->drv[0].raid_level == -1);
+
+ /* testing to see if 16-byte CDBs are already being used */
+ if (h->cciss_read == CCISS_READ_16) {
+ cciss_read_capacity_16(h->ctlr, drv_index, 1,
+ &total_size, &block_size);
- /* if the disk already exists then deregister it before proceeding */
- if (h->drv[drv_index].raid_level != -1) {
+ } else {
+ cciss_read_capacity(ctlr, drv_index, 1,
+ &total_size, &block_size);
+
+ /* if read_capacity returns all F's this volume is >2TB */
+ /* in size so we switch to 16-byte CDB's for all */
+ /* read/write ops */
+ if (total_size == 0xFFFFFFFFULL) {
+ cciss_read_capacity_16(ctlr, drv_index, 1,
+ &total_size, &block_size);
+ h->cciss_read = CCISS_READ_16;
+ h->cciss_write = CCISS_WRITE_16;
+ } else {
+ h->cciss_read = CCISS_READ_10;
+ h->cciss_write = CCISS_WRITE_10;
+ }
+ }
+
+ cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
+ inq_buff, drvinfo);
+ drvinfo->block_size = block_size;
+ drvinfo->nr_blocks = total_size + 1;
+
+ cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no,
+ sizeof(drvinfo->serial_no));
+
+ /* Is it the same disk we already know, and nothing's changed? */
+ if (h->drv[drv_index].raid_level != -1 &&
+ ((memcmp(drvinfo->serial_no,
+ h->drv[drv_index].serial_no, 16) == 0) &&
+ drvinfo->block_size == h->drv[drv_index].block_size &&
+ drvinfo->nr_blocks == h->drv[drv_index].nr_blocks &&
+ drvinfo->heads == h->drv[drv_index].heads &&
+ drvinfo->sectors == h->drv[drv_index].sectors &&
+ drvinfo->cylinders == h->drv[drv_index].cylinders))
+ /* The disk is unchanged, nothing to update */
+ goto freeret;
+
+ /* If we get here it's not the same disk, or something's changed,
+ * so we need to * deregister it, and re-register it, if it's not
+ * in use.
+ * If the disk already exists then deregister it before proceeding
+ * (unless it's the first disk (for the controller node).
+ */
+ if (h->drv[drv_index].raid_level != -1 && drv_index != 0) {
+ printk(KERN_WARNING "disk %d has changed.\n", drv_index);
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
h->drv[drv_index].busy_configuring = 1;
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- /* deregister_disk sets h->drv[drv_index].queue = NULL */
- /* which keeps the interrupt handler from starting */
- /* the queue. */
+ /* deregister_disk sets h->drv[drv_index].queue = NULL
+ * which keeps the interrupt handler from starting
+ * the queue.
+ */
ret = deregister_disk(h->gendisk[drv_index],
&h->drv[drv_index], 0);
h->drv[drv_index].busy_configuring = 0;
/* If the disk is in use return */
if (ret)
- return;
-
- /* Get information about the disk and modify the driver structure */
- inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
- if (inq_buff == NULL)
- goto mem_msg;
+ goto freeret;
- /* testing to see if 16-byte CDBs are already being used */
- if (h->cciss_read == CCISS_READ_16) {
- cciss_read_capacity_16(h->ctlr, drv_index, 1,
- &total_size, &block_size);
- goto geo_inq;
- }
-
- cciss_read_capacity(ctlr, drv_index, 1,
- &total_size, &block_size);
-
- /* if read_capacity returns all F's this volume is >2TB in size */
- /* so we switch to 16-byte CDB's for all read/write ops */
- if (total_size == 0xFFFFFFFFULL) {
- cciss_read_capacity_16(ctlr, drv_index, 1,
- &total_size, &block_size);
- h->cciss_read = CCISS_READ_16;
- h->cciss_write = CCISS_WRITE_16;
- } else {
- h->cciss_read = CCISS_READ_10;
- h->cciss_write = CCISS_WRITE_10;
- }
-geo_inq:
- cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
- inq_buff, &h->drv[drv_index]);
+ /* Save the new information from cciss_geometry_inquiry
+ * and serial number inquiry.
+ */
+ h->drv[drv_index].block_size = drvinfo->block_size;
+ h->drv[drv_index].nr_blocks = drvinfo->nr_blocks;
+ h->drv[drv_index].heads = drvinfo->heads;
+ h->drv[drv_index].sectors = drvinfo->sectors;
+ h->drv[drv_index].cylinders = drvinfo->cylinders;
+ h->drv[drv_index].raid_level = drvinfo->raid_level;
+ memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16);
++h->num_luns;
disk = h->gendisk[drv_index];
set_capacity(disk, h->drv[drv_index].nr_blocks);
- /* if it's the controller it's already added */
- if (drv_index) {
- disk->queue = blk_init_queue(do_cciss_request, &h->lock);
- sprintf(disk->disk_name, "cciss/c%dd%d", ctlr, drv_index);
- disk->major = h->major;
- disk->first_minor = drv_index << NWD_SHIFT;
- disk->fops = &cciss_fops;
- disk->private_data = &h->drv[drv_index];
-
- /* Set up queue information */
- blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask);
-
- /* This is a hardware imposed limit. */
- blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
-
- /* This is a limit in the driver and could be eliminated. */
- blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
-
- blk_queue_max_sectors(disk->queue, h->cciss_max_sectors);
-
- blk_queue_softirq_done(disk->queue, cciss_softirq_done);
-
- disk->queue->queuedata = hba[ctlr];
-
- blk_queue_hardsect_size(disk->queue,
- hba[ctlr]->drv[drv_index].block_size);
-
- /* Make sure all queue data is written out before */
- /* setting h->drv[drv_index].queue, as setting this */
- /* allows the interrupt handler to start the queue */
- wmb();
- h->drv[drv_index].queue = disk->queue;
- add_disk(disk);
- }
+ /* If it's not disk 0 (drv_index != 0)
+ * or if it was disk 0, but there was previously
+ * no actual corresponding configured logical drive
+ * (raid_leve == -1) then we want to update the
+ * logical drive's information.
+ */
+ if (drv_index || first_time)
+ cciss_add_disk(h, disk, drv_index);
- freeret:
+freeret:
kfree(inq_buff);
+ kfree(drvinfo);
return;
- mem_msg:
+mem_msg:
printk(KERN_ERR "cciss: out of memory\n");
goto freeret;
}
return -1;
}
+/* cciss_add_gendisk finds a free hba[]->drv structure
+ * and allocates a gendisk if needed, and sets the lunid
+ * in the drvinfo structure. It returns the index into
+ * the ->drv[] array, or -1 if none are free.
+ * is_controller_node indicates whether highest_lun should
+ * count this disk, or if it's only being added to provide
+ * a means to talk to the controller in case no logical
+ * drives have yet been configured.
+ */
+static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid)
+{
+ int drv_index;
+
+ drv_index = cciss_find_free_drive_index(h->ctlr);
+ if (drv_index == -1)
+ return -1;
+ /*Check if the gendisk needs to be allocated */
+ if (!h->gendisk[drv_index]) {
+ h->gendisk[drv_index] =
+ alloc_disk(1 << NWD_SHIFT);
+ if (!h->gendisk[drv_index]) {
+ printk(KERN_ERR "cciss%d: could not "
+ "allocate a new disk %d\n",
+ h->ctlr, drv_index);
+ return -1;
+ }
+ }
+ h->drv[drv_index].LunID = lunid;
+
+ /* Don't need to mark this busy because nobody */
+ /* else knows about this disk yet to contend */
+ /* for access to it. */
+ h->drv[drv_index].busy_configuring = 0;
+ wmb();
+ return drv_index;
+}
+
+/* This is for the special case of a controller which
+ * has no logical drives. In this case, we still need
+ * to register a disk so the controller can be accessed
+ * by the Array Config Utility.
+ */
+static void cciss_add_controller_node(ctlr_info_t *h)
+{
+ struct gendisk *disk;
+ int drv_index;
+
+ if (h->gendisk[0] != NULL) /* already did this? Then bail. */
+ return;
+
+ drv_index = cciss_add_gendisk(h, 0);
+ if (drv_index == -1) {
+ printk(KERN_WARNING "cciss%d: could not "
+ "add disk 0.\n", h->ctlr);
+ return;
+ }
+ h->drv[drv_index].block_size = 512;
+ h->drv[drv_index].nr_blocks = 0;
+ h->drv[drv_index].heads = 0;
+ h->drv[drv_index].sectors = 0;
+ h->drv[drv_index].cylinders = 0;
+ h->drv[drv_index].raid_level = -1;
+ memset(h->drv[drv_index].serial_no, 0, 16);
+ disk = h->gendisk[drv_index];
+ cciss_add_disk(h, disk, drv_index);
+}
+
/* This function will add and remove logical drives from the Logical
* drive array of the controller and maintain persistency of ordering
* so that mount points are preserved until the next reboot. This allows
* without a re-ordering of those drives.
* INPUT
* h = The controller to perform the operations on
- * del_disk = The disk to remove if specified. If the value given
- * is NULL then no disk is removed.
*/
-static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk)
+static int rebuild_lun_table(ctlr_info_t *h, int first_time)
{
int ctlr = h->ctlr;
int num_luns;
ReportLunData_struct *ld_buff = NULL;
- drive_info_struct *drv = NULL;
int return_code;
int listlength = 0;
int i;
__u32 lunid = 0;
unsigned long flags;
+ if (!capable(CAP_SYS_RAWIO))
+ return -EPERM;
+
/* Set busy_configuring flag for this operation */
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
if (h->busy_configuring) {
return -EBUSY;
}
h->busy_configuring = 1;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- /* if del_disk is NULL then we are being called to add a new disk
- * and update the logical drive table. If it is not NULL then
- * we will check if the disk is in use or not.
- */
- if (del_disk != NULL) {
- drv = get_drv(del_disk);
- drv->busy_configuring = 1;
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- return_code = deregister_disk(del_disk, drv, 1);
- drv->busy_configuring = 0;
- h->busy_configuring = 0;
- return return_code;
- } else {
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
+ ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
+ if (ld_buff == NULL)
+ goto mem_msg;
- ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
- if (ld_buff == NULL)
- goto mem_msg;
-
- return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
- sizeof(ReportLunData_struct), 0,
- 0, 0, TYPE_CMD);
-
- if (return_code == IO_OK) {
- listlength =
- be32_to_cpu(*(__be32 *) ld_buff->LUNListLength);
- } else { /* reading number of logical volumes failed */
- printk(KERN_WARNING "cciss: report logical volume"
- " command failed\n");
- listlength = 0;
- goto freeret;
- }
+ return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
+ sizeof(ReportLunData_struct), 0,
+ 0, 0, TYPE_CMD);
+
+ if (return_code == IO_OK)
+ listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength);
+ else { /* reading number of logical volumes failed */
+ printk(KERN_WARNING "cciss: report logical volume"
+ " command failed\n");
+ listlength = 0;
+ goto freeret;
+ }
- num_luns = listlength / 8; /* 8 bytes per entry */
- if (num_luns > CISS_MAX_LUN) {
- num_luns = CISS_MAX_LUN;
- printk(KERN_WARNING "cciss: more luns configured"
- " on controller than can be handled by"
- " this driver.\n");
+ num_luns = listlength / 8; /* 8 bytes per entry */
+ if (num_luns > CISS_MAX_LUN) {
+ num_luns = CISS_MAX_LUN;
+ printk(KERN_WARNING "cciss: more luns configured"
+ " on controller than can be handled by"
+ " this driver.\n");
+ }
+
+ if (num_luns == 0)
+ cciss_add_controller_node(h);
+
+ /* Compare controller drive array to driver's drive array
+ * to see if any drives are missing on the controller due
+ * to action of Array Config Utility (user deletes drive)
+ * and deregister logical drives which have disappeared.
+ */
+ for (i = 0; i <= h->highest_lun; i++) {
+ int j;
+ drv_found = 0;
+ for (j = 0; j < num_luns; j++) {
+ memcpy(&lunid, &ld_buff->LUN[j][0], 4);
+ lunid = le32_to_cpu(lunid);
+ if (h->drv[i].LunID == lunid) {
+ drv_found = 1;
+ break;
+ }
}
+ if (!drv_found) {
+ /* Deregister it from the OS, it's gone. */
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ h->drv[i].busy_configuring = 1;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return_code = deregister_disk(h->gendisk[i],
+ &h->drv[i], 1);
+ h->drv[i].busy_configuring = 0;
+ }
+ }
+
+ /* Compare controller drive array to driver's drive array.
+ * Check for updates in the drive information and any new drives
+ * on the controller due to ACU adding logical drives, or changing
+ * a logical drive's size, etc. Reregister any new/changed drives
+ */
+ for (i = 0; i < num_luns; i++) {
+ int j;
+
+ drv_found = 0;
- /* Compare controller drive array to drivers drive array.
- * Check for updates in the drive information and any new drives
- * on the controller.
+ memcpy(&lunid, &ld_buff->LUN[i][0], 4);
+ lunid = le32_to_cpu(lunid);
+
+ /* Find if the LUN is already in the drive array
+ * of the driver. If so then update its info
+ * if not in use. If it does not exist then find
+ * the first free index and add it.
*/
- for (i = 0; i < num_luns; i++) {
- int j;
-
- drv_found = 0;
-
- lunid = (0xff &
- (unsigned int)(ld_buff->LUN[i][3])) << 24;
- lunid |= (0xff &
- (unsigned int)(ld_buff->LUN[i][2])) << 16;
- lunid |= (0xff &
- (unsigned int)(ld_buff->LUN[i][1])) << 8;
- lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
-
- /* Find if the LUN is already in the drive array
- * of the controller. If so then update its info
- * if not is use. If it does not exist then find
- * the first free index and add it.
- */
- for (j = 0; j <= h->highest_lun; j++) {
- if (h->drv[j].LunID == lunid) {
- drv_index = j;
- drv_found = 1;
- }
+ for (j = 0; j <= h->highest_lun; j++) {
+ if (h->drv[j].raid_level != -1 &&
+ h->drv[j].LunID == lunid) {
+ drv_index = j;
+ drv_found = 1;
+ break;
}
+ }
- /* check if the drive was found already in the array */
- if (!drv_found) {
- drv_index = cciss_find_free_drive_index(ctlr);
- if (drv_index == -1)
- goto freeret;
-
- /*Check if the gendisk needs to be allocated */
- if (!h->gendisk[drv_index]){
- h->gendisk[drv_index] = alloc_disk(1 << NWD_SHIFT);
- if (!h->gendisk[drv_index]){
- printk(KERN_ERR "cciss: could not allocate new disk %d\n", drv_index);
- goto mem_msg;
- }
- }
- }
- h->drv[drv_index].LunID = lunid;
- cciss_update_drive_info(ctlr, drv_index);
- } /* end for */
- } /* end else */
+ /* check if the drive was found already in the array */
+ if (!drv_found) {
+ drv_index = cciss_add_gendisk(h, lunid);
+ if (drv_index == -1)
+ goto freeret;
+ }
+ cciss_update_drive_info(ctlr, drv_index, first_time);
+ } /* end for */
- freeret:
+freeret:
kfree(ld_buff);
h->busy_configuring = 0;
/* We return -1 here to tell the ACU that we have registered/updated
* additional times.
*/
return -1;
- mem_msg:
+mem_msg:
printk(KERN_ERR "cciss: out of memory\n");
+ h->busy_configuring = 0;
goto freeret;
}
* other than disk 0 we will call put_disk. We do not
* do this for disk 0 as we need it to be able to
* configure the controller.
- */
+ */
if (clear_all){
/* This isn't pretty, but we need to find the
* disk in our array and NULL our the pointer.
* This is so that we will call alloc_disk if
* this index is used again later.
- */
+ */
for (i=0; i < CISS_MAX_LUN; i++){
- if(h->gendisk[i] == disk){
+ if (h->gendisk[i] == disk) {
h->gendisk[i] = NULL;
break;
}
if (drv == h->drv + h->highest_lun) {
/* if so, find the new hightest lun */
int i, newhighest = -1;
- for (i = 0; i < h->highest_lun; i++) {
+ for (i = 0; i <= h->highest_lun; i++) {
/* if the disk has size > 0, it is available */
if (h->drv[i].heads)
newhighest = i;
return err;
}
-/*
- * Gets information about the local volumes attached to the controller.
+/* Function to find the first free pointer into our hba[] array
+ * Returns -1 if no free entries are left.
*/
-static void cciss_getgeometry(int cntl_num)
-{
- ReportLunData_struct *ld_buff;
- InquiryData_struct *inq_buff;
- int return_code;
- int i;
- int listlength = 0;
- __u32 lunid = 0;
- unsigned block_size;
- sector_t total_size;
-
- ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
- if (ld_buff == NULL) {
- printk(KERN_ERR "cciss: out of memory\n");
- return;
- }
- inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
- if (inq_buff == NULL) {
- printk(KERN_ERR "cciss: out of memory\n");
- kfree(ld_buff);
- return;
- }
- /* Get the firmware version */
- return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
- sizeof(InquiryData_struct), 0, 0, 0, NULL,
- TYPE_CMD);
- if (return_code == IO_OK) {
- hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
- hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
- hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
- hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
- } else { /* send command failed */
-
- printk(KERN_WARNING "cciss: unable to determine firmware"
- " version of controller\n");
- }
- /* Get the number of logical volumes */
- return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
- sizeof(ReportLunData_struct), 0, 0, 0, NULL,
- TYPE_CMD);
-
- if (return_code == IO_OK) {
-#ifdef CCISS_DEBUG
- printk("LUN Data\n--------------------------\n");
-#endif /* CCISS_DEBUG */
-
- listlength |=
- (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
- listlength |=
- (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
- listlength |=
- (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
- listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
- } else { /* reading number of logical volumes failed */
-
- printk(KERN_WARNING "cciss: report logical volume"
- " command failed\n");
- listlength = 0;
- }
- hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
- if (hba[cntl_num]->num_luns > CISS_MAX_LUN) {
- printk(KERN_ERR
- "ciss: only %d number of logical volumes supported\n",
- CISS_MAX_LUN);
- hba[cntl_num]->num_luns = CISS_MAX_LUN;
- }
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "Length = %x %x %x %x = %d\n",
- ld_buff->LUNListLength[0], ld_buff->LUNListLength[1],
- ld_buff->LUNListLength[2], ld_buff->LUNListLength[3],
- hba[cntl_num]->num_luns);
-#endif /* CCISS_DEBUG */
-
- hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1;
- for (i = 0; i < CISS_MAX_LUN; i++) {
- if (i < hba[cntl_num]->num_luns) {
- lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3]))
- << 24;
- lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2]))
- << 16;
- lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1]))
- << 8;
- lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
-
- hba[cntl_num]->drv[i].LunID = lunid;
-
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
- ld_buff->LUN[i][0], ld_buff->LUN[i][1],
- ld_buff->LUN[i][2], ld_buff->LUN[i][3],
- hba[cntl_num]->drv[i].LunID);
-#endif /* CCISS_DEBUG */
-
- /* testing to see if 16-byte CDBs are already being used */
- if(hba[cntl_num]->cciss_read == CCISS_READ_16) {
- cciss_read_capacity_16(cntl_num, i, 0,
- &total_size, &block_size);
- goto geo_inq;
- }
- cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size);
-
- /* If read_capacity returns all F's the logical is >2TB */
- /* so we switch to 16-byte CDBs for all read/write ops */
- if(total_size == 0xFFFFFFFFULL) {
- cciss_read_capacity_16(cntl_num, i, 0,
- &total_size, &block_size);
- hba[cntl_num]->cciss_read = CCISS_READ_16;
- hba[cntl_num]->cciss_write = CCISS_WRITE_16;
- } else {
- hba[cntl_num]->cciss_read = CCISS_READ_10;
- hba[cntl_num]->cciss_write = CCISS_WRITE_10;
- }
-geo_inq:
- cciss_geometry_inquiry(cntl_num, i, 0, total_size,
- block_size, inq_buff,
- &hba[cntl_num]->drv[i]);
- } else {
- /* initialize raid_level to indicate a free space */
- hba[cntl_num]->drv[i].raid_level = -1;
- }
- }
- kfree(ld_buff);
- kfree(inq_buff);
-}
-
-/* Function to find the first free pointer into our hba[] array */
-/* Returns -1 if no free entries are left. */
static int alloc_cciss_hba(void)
{
int i;
p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
if (!p)
goto Enomem;
- p->gendisk[0] = alloc_disk(1 << NWD_SHIFT);
- if (!p->gendisk[0]) {
- kfree(p);
- goto Enomem;
- }
hba[i] = p;
return i;
}
((hba[i]->nr_cmds + BITS_PER_LONG -
1) / BITS_PER_LONG) * sizeof(unsigned long));
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i);
-#endif /* CCISS_DEBUG */
-
- cciss_getgeometry(i);
+ hba[i]->num_luns = 0;
+ hba[i]->highest_lun = -1;
+ for (j = 0; j < CISS_MAX_LUN; j++) {
+ hba[i]->drv[j].raid_level = -1;
+ hba[i]->drv[j].queue = NULL;
+ hba[i]->gendisk[j] = NULL;
+ }
cciss_scsi_setup(i);
hba[i]->busy_initializing = 0;
- do {
- drive_info_struct *drv = &(hba[i]->drv[j]);
- struct gendisk *disk = hba[i]->gendisk[j];
- struct request_queue *q;
-
- /* Check if the disk was allocated already */
- if (!disk){
- hba[i]->gendisk[j] = alloc_disk(1 << NWD_SHIFT);
- disk = hba[i]->gendisk[j];
- }
-
- /* Check that the disk was able to be allocated */
- if (!disk) {
- printk(KERN_ERR "cciss: unable to allocate memory for disk %d\n", j);
- goto clean4;
- }
-
- q = blk_init_queue(do_cciss_request, &hba[i]->lock);
- if (!q) {
- printk(KERN_ERR
- "cciss: unable to allocate queue for disk %d\n",
- j);
- goto clean4;
- }
- drv->queue = q;
-
- blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
-
- /* This is a hardware imposed limit. */
- blk_queue_max_hw_segments(q, MAXSGENTRIES);
-
- /* This is a limit in the driver and could be eliminated. */
- blk_queue_max_phys_segments(q, MAXSGENTRIES);
-
- blk_queue_max_sectors(q, hba[i]->cciss_max_sectors);
-
- blk_queue_softirq_done(q, cciss_softirq_done);
-
- q->queuedata = hba[i];
- sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
- disk->major = hba[i]->major;
- disk->first_minor = j << NWD_SHIFT;
- disk->fops = &cciss_fops;
- disk->queue = q;
- disk->private_data = drv;
- disk->driverfs_dev = &pdev->dev;
- /* we must register the controller even if no disks exist */
- /* this is for the online array utilities */
- if (!drv->heads && j)
- continue;
- blk_queue_hardsect_size(q, drv->block_size);
- set_capacity(disk, drv->nr_blocks);
- j++;
- } while (j <= hba[i]->highest_lun);
-
- /* Make sure all queue data is written out before */
- /* interrupt handler, triggered by add_disk, */
- /* is allowed to start them. */
- wmb();
-
- for (j = 0; j <= hba[i]->highest_lun; j++)
- add_disk(hba[i]->gendisk[j]);
-
- /* we must register the controller even if no disks exist */
- if (hba[i]->highest_lun == -1)
- add_disk(hba[i]->gendisk[0]);
-
+ rebuild_lun_table(hba[i], 1);
return 1;
- clean4:
+clean4:
#ifdef CONFIG_CISS_SCSI_TAPE
kfree(hba[i]->scsi_rejects.complete);
#endif
hba[i]->errinfo_pool,
hba[i]->errinfo_pool_dhandle);
free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]);
- clean2:
+clean2:
unregister_blkdev(hba[i]->major, hba[i]->devname);
- clean1:
+clean1:
hba[i]->busy_initializing = 0;
/* cleanup any queues that may have been initialized */
for (j=0; j <= hba[i]->highest_lun; j++){
projects / linux-2.6-omap-h63xx.git / blobdiff