#define CCISS_ABORT_MSG 0x00
#define CCISS_RESET_MSG 0x01
-/* some prototypes... */
-static int sendcmd(
- __u8 cmd,
- int ctlr,
- void *buff,
- size_t size,
- unsigned int use_unit_num, /* 0: address the controller,
- 1: address logical volume log_unit,
- 2: address is in scsi3addr */
- unsigned int log_unit,
- __u8 page_code,
- unsigned char *scsi3addr,
+static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
+ size_t size,
+ __u8 page_code, unsigned char *scsi3addr,
int cmd_type);
+static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool);
+static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool);
static int cciss_scsi_proc_info(
struct Scsi_Host *sh,
static int
cciss_scsi_add_entry(int ctlr, int hostno,
- unsigned char *scsi3addr, int devtype,
+ struct cciss_scsi_dev_t *device,
struct scsi2map *added, int *nadded)
{
/* assumes hba[ctlr]->scsi_ctlr->lock is held */
lun = 0;
/* Is this device a non-zero lun of a multi-lun device */
/* byte 4 of the 8-byte LUN addr will contain the logical unit no. */
- if (scsi3addr[4] != 0) {
+ if (device->scsi3addr[4] != 0) {
/* Search through our list and find the device which */
/* has the same 8 byte LUN address, excepting byte 4. */
/* Assign the same bus and target for this new LUN. */
/* Use the logical unit number from the firmware. */
- memcpy(addr1, scsi3addr, 8);
+ memcpy(addr1, device->scsi3addr, 8);
addr1[4] = 0;
for (i = 0; i < n; i++) {
sd = &ccissscsi[ctlr].dev[i];
if (memcmp(addr1, addr2, 8) == 0) {
bus = sd->bus;
target = sd->target;
- lun = scsi3addr[4];
+ lun = device->scsi3addr[4];
break;
}
}
added[*nadded].lun = sd->lun;
(*nadded)++;
- memcpy(&sd->scsi3addr[0], scsi3addr, 8);
- sd->devtype = devtype;
+ memcpy(sd->scsi3addr, device->scsi3addr, 8);
+ memcpy(sd->vendor, device->vendor, sizeof(sd->vendor));
+ memcpy(sd->revision, device->revision, sizeof(sd->revision));
+ memcpy(sd->device_id, device->device_id, sizeof(sd->device_id));
+ sd->devtype = device->devtype;
+
ccissscsi[ctlr].ndevices++;
/* initially, (before registering with scsi layer) we don't
CPQ_TAPE_UNLOCK(ctlr, flags);
}
+static int device_is_the_same(struct cciss_scsi_dev_t *dev1,
+ struct cciss_scsi_dev_t *dev2)
+{
+ return dev1->devtype == dev2->devtype &&
+ memcmp(dev1->scsi3addr, dev2->scsi3addr,
+ sizeof(dev1->scsi3addr)) == 0 &&
+ memcmp(dev1->device_id, dev2->device_id,
+ sizeof(dev1->device_id)) == 0 &&
+ memcmp(dev1->vendor, dev2->vendor,
+ sizeof(dev1->vendor)) == 0 &&
+ memcmp(dev1->model, dev2->model,
+ sizeof(dev1->model)) == 0 &&
+ memcmp(dev1->revision, dev2->revision,
+ sizeof(dev1->revision)) == 0;
+}
+
static int
adjust_cciss_scsi_table(int ctlr, int hostno,
struct cciss_scsi_dev_t sd[], int nsds)
for (j=0;j<nsds;j++) {
if (SCSI3ADDR_EQ(sd[j].scsi3addr,
csd->scsi3addr)) {
- if (sd[j].devtype == csd->devtype)
+ if (device_is_the_same(&sd[j], csd))
found=2;
else
found=1;
cciss_scsi_remove_entry(ctlr, hostno, i,
removed, &nremoved);
/* remove ^^^, hence i not incremented */
- }
- else if (found == 1) { /* device is different kind */
+ } else if (found == 1) { /* device is different in some way */
changes++;
- printk("cciss%d: device c%db%dt%dl%d type changed "
- "(device type now %s).\n",
- ctlr, hostno, csd->bus, csd->target, csd->lun,
- scsi_device_type(csd->devtype));
+ printk("cciss%d: device c%db%dt%dl%d has changed.\n",
+ ctlr, hostno, csd->bus, csd->target, csd->lun);
cciss_scsi_remove_entry(ctlr, hostno, i,
removed, &nremoved);
/* remove ^^^, hence i not incremented */
- if (cciss_scsi_add_entry(ctlr, hostno,
- &sd[j].scsi3addr[0], sd[j].devtype,
+ if (cciss_scsi_add_entry(ctlr, hostno, &sd[j],
added, &nadded) != 0)
/* we just removed one, so add can't fail. */
BUG();
csd->devtype = sd[j].devtype;
+ memcpy(csd->device_id, sd[j].device_id,
+ sizeof(csd->device_id));
+ memcpy(csd->vendor, sd[j].vendor,
+ sizeof(csd->vendor));
+ memcpy(csd->model, sd[j].model,
+ sizeof(csd->model));
+ memcpy(csd->revision, sd[j].revision,
+ sizeof(csd->revision));
} else /* device is same as it ever was, */
i++; /* so just move along. */
}
csd = &ccissscsi[ctlr].dev[j];
if (SCSI3ADDR_EQ(sd[i].scsi3addr,
csd->scsi3addr)) {
- if (sd[i].devtype == csd->devtype)
+ if (device_is_the_same(&sd[i], csd))
found=2; /* found device */
else
found=1; /* found a bug. */
}
if (!found) {
changes++;
- if (cciss_scsi_add_entry(ctlr, hostno,
-
- &sd[i].scsi3addr[0], sd[i].devtype,
+ if (cciss_scsi_add_entry(ctlr, hostno, &sd[i],
added, &nadded) != 0)
break;
} else if (found == 1) {
/* should never happen... */
changes++;
- printk("cciss%d: device unexpectedly changed type\n",
- ctlr);
+ printk(KERN_WARNING "cciss%d: device "
+ "unexpectedly changed\n", ctlr);
/* but if it does happen, we just ignore that device */
}
}
static int
cciss_scsi_do_inquiry(ctlr_info_t *c, unsigned char *scsi3addr,
- unsigned char *buf, unsigned char bufsize)
+ unsigned char page, unsigned char *buf,
+ unsigned char bufsize)
{
int rc;
CommandList_struct *cp;
ei = cp->err_info;
cdb[0] = CISS_INQUIRY;
- cdb[1] = 0;
- cdb[2] = 0;
+ cdb[1] = (page != 0);
+ cdb[2] = page;
cdb[3] = 0;
cdb[4] = bufsize;
cdb[5] = 0;
return rc;
}
+/* Get the device id from inquiry page 0x83 */
+static int cciss_scsi_get_device_id(ctlr_info_t *c, unsigned char *scsi3addr,
+ unsigned char *device_id, int buflen)
+{
+ int rc;
+ unsigned char *buf;
+
+ if (buflen > 16)
+ buflen = 16;
+ buf = kzalloc(64, GFP_KERNEL);
+ if (!buf)
+ return -1;
+ rc = cciss_scsi_do_inquiry(c, scsi3addr, 0x83, buf, 64);
+ if (rc == 0)
+ memcpy(device_id, &buf[8], buflen);
+ kfree(buf);
+ return rc != 0;
+}
+
static int
cciss_scsi_do_report_phys_luns(ctlr_info_t *c,
ReportLunData_struct *buf, int bufsize)
ctlr_info_t *c;
__u32 num_luns=0;
unsigned char *ch;
- /* unsigned char found[CCISS_MAX_SCSI_DEVS_PER_HBA]; */
- struct cciss_scsi_dev_t currentsd[CCISS_MAX_SCSI_DEVS_PER_HBA];
+ struct cciss_scsi_dev_t *currentsd, *this_device;
int ncurrent=0;
int reportlunsize = sizeof(*ld_buff) + CISS_MAX_PHYS_LUN * 8;
int i;
c = (ctlr_info_t *) hba[cntl_num];
ld_buff = kzalloc(reportlunsize, GFP_KERNEL);
- if (ld_buff == NULL) {
- printk(KERN_ERR "cciss: out of memory\n");
- return;
- }
inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
- if (inq_buff == NULL) {
- printk(KERN_ERR "cciss: out of memory\n");
- kfree(ld_buff);
- return;
+ currentsd = kzalloc(sizeof(*currentsd) *
+ (CCISS_MAX_SCSI_DEVS_PER_HBA+1), GFP_KERNEL);
+ if (ld_buff == NULL || inq_buff == NULL || currentsd == NULL) {
+ printk(KERN_ERR "cciss: out of memory\n");
+ goto out;
}
-
+ this_device = ¤tsd[CCISS_MAX_SCSI_DEVS_PER_HBA];
if (cciss_scsi_do_report_phys_luns(c, ld_buff, reportlunsize) == 0) {
ch = &ld_buff->LUNListLength[0];
num_luns = ((ch[0]<<24) | (ch[1]<<16) | (ch[2]<<8) | ch[3]) / 8;
/* adjust our table of devices */
- for(i=0; i<num_luns; i++)
- {
- int devtype;
-
+ for (i = 0; i < num_luns; i++) {
/* for each physical lun, do an inquiry */
if (ld_buff->LUN[i][3] & 0xC0) continue;
memset(inq_buff, 0, OBDR_TAPE_INQ_SIZE);
memcpy(&scsi3addr[0], &ld_buff->LUN[i][0], 8);
- if (cciss_scsi_do_inquiry(hba[cntl_num], scsi3addr, inq_buff,
- (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
+ if (cciss_scsi_do_inquiry(hba[cntl_num], scsi3addr, 0, inq_buff,
+ (unsigned char) OBDR_TAPE_INQ_SIZE) != 0)
/* Inquiry failed (msg printed already) */
- devtype = 0; /* so we will skip this device. */
- } else /* what kind of device is this? */
- devtype = (inq_buff[0] & 0x1f);
-
- switch (devtype)
+ continue; /* so we will skip this device. */
+
+ this_device->devtype = (inq_buff[0] & 0x1f);
+ this_device->bus = -1;
+ this_device->target = -1;
+ this_device->lun = -1;
+ memcpy(this_device->scsi3addr, scsi3addr, 8);
+ memcpy(this_device->vendor, &inq_buff[8],
+ sizeof(this_device->vendor));
+ memcpy(this_device->model, &inq_buff[16],
+ sizeof(this_device->model));
+ memcpy(this_device->revision, &inq_buff[32],
+ sizeof(this_device->revision));
+ memset(this_device->device_id, 0,
+ sizeof(this_device->device_id));
+ cciss_scsi_get_device_id(hba[cntl_num], scsi3addr,
+ this_device->device_id, sizeof(this_device->device_id));
+
+ switch (this_device->devtype)
{
case 0x05: /* CD-ROM */ {
if (ncurrent >= CCISS_MAX_SCSI_DEVS_PER_HBA) {
printk(KERN_INFO "cciss%d: %s ignored, "
"too many devices.\n", cntl_num,
- scsi_device_type(devtype));
+ scsi_device_type(this_device->devtype));
break;
}
- memcpy(¤tsd[ncurrent].scsi3addr[0],
- &scsi3addr[0], 8);
- currentsd[ncurrent].devtype = devtype;
- currentsd[ncurrent].bus = -1;
- currentsd[ncurrent].target = -1;
- currentsd[ncurrent].lun = -1;
+ currentsd[ncurrent] = *this_device;
ncurrent++;
break;
default:
out:
kfree(inq_buff);
kfree(ld_buff);
+ kfree(currentsd);
return;
}
CPQ_TAPE_UNLOCK(ctlr, flags);
}
+static int wait_for_device_to_become_ready(ctlr_info_t *h,
+ unsigned char lunaddr[])
+{
+ int rc;
+ int count = 0;
+ int waittime = HZ;
+ CommandList_struct *c;
+
+ c = cmd_alloc(h, 1);
+ if (!c) {
+ printk(KERN_WARNING "cciss%d: out of memory in "
+ "wait_for_device_to_become_ready.\n", h->ctlr);
+ return IO_ERROR;
+ }
+
+ /* Send test unit ready until device ready, or give up. */
+ while (count < 20) {
+
+ /* Wait for a bit. do this first, because if we send
+ * the TUR right away, the reset will just abort it.
+ */
+ schedule_timeout_uninterruptible(waittime);
+ count++;
+
+ /* Increase wait time with each try, up to a point. */
+ if (waittime < (HZ * 30))
+ waittime = waittime * 2;
+
+ /* Send the Test Unit Ready */
+ rc = fill_cmd(c, TEST_UNIT_READY, h->ctlr, NULL, 0, 0,
+ lunaddr, TYPE_CMD);
+ if (rc == 0)
+ rc = sendcmd_withirq_core(h, c, 0);
+
+ (void) process_sendcmd_error(h, c);
+
+ if (rc != 0)
+ goto retry_tur;
+
+ if (c->err_info->CommandStatus == CMD_SUCCESS)
+ break;
+
+ if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
+ c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
+ if (c->err_info->SenseInfo[2] == NO_SENSE)
+ break;
+ if (c->err_info->SenseInfo[2] == UNIT_ATTENTION) {
+ unsigned char asc;
+ asc = c->err_info->SenseInfo[12];
+ check_for_unit_attention(h, c);
+ if (asc == POWER_OR_RESET)
+ break;
+ }
+ }
+retry_tur:
+ printk(KERN_WARNING "cciss%d: Waiting %d secs "
+ "for device to become ready.\n",
+ h->ctlr, waittime / HZ);
+ rc = 1; /* device not ready. */
+ }
+
+ if (rc)
+ printk("cciss%d: giving up on device.\n", h->ctlr);
+ else
+ printk(KERN_WARNING "cciss%d: device is ready.\n", h->ctlr);
+
+ cmd_free(h, c, 1);
+ return rc;
+}
/* Need at least one of these error handlers to keep ../scsi/hosts.c from
* complaining. Doing a host- or bus-reset can't do anything good here.
{
int rc;
CommandList_struct *cmd_in_trouble;
+ unsigned char lunaddr[8];
ctlr_info_t **c;
int ctlr;
return FAILED;
ctlr = (*c)->ctlr;
printk(KERN_WARNING "cciss%d: resetting tape drive or medium changer.\n", ctlr);
-
/* find the command that's giving us trouble */
cmd_in_trouble = (CommandList_struct *) scsicmd->host_scribble;
- if (cmd_in_trouble == NULL) { /* paranoia */
+ if (cmd_in_trouble == NULL) /* paranoia */
return FAILED;
- }
+ memcpy(lunaddr, &cmd_in_trouble->Header.LUN.LunAddrBytes[0], 8);
/* send a reset to the SCSI LUN which the command was sent to */
- rc = sendcmd(CCISS_RESET_MSG, ctlr, NULL, 0, 2, 0, 0,
- (unsigned char *) &cmd_in_trouble->Header.LUN.LunAddrBytes[0],
+ rc = sendcmd_withirq(CCISS_RESET_MSG, ctlr, NULL, 0, 0, lunaddr,
TYPE_MSG);
- /* sendcmd turned off interrupts on the board, turn 'em back on. */
- (*c)->access.set_intr_mask(*c, CCISS_INTR_ON);
- if (rc == 0)
+ if (rc == 0 && wait_for_device_to_become_ready(*c, lunaddr) == 0)
return SUCCESS;
printk(KERN_WARNING "cciss%d: resetting device failed.\n", ctlr);
return FAILED;
{
int rc;
CommandList_struct *cmd_to_abort;
+ unsigned char lunaddr[8];
ctlr_info_t **c;
int ctlr;
cmd_to_abort = (CommandList_struct *) scsicmd->host_scribble;
if (cmd_to_abort == NULL) /* paranoia */
return FAILED;
- rc = sendcmd(CCISS_ABORT_MSG, ctlr, &cmd_to_abort->Header.Tag,
- 0, 2, 0, 0,
- (unsigned char *) &cmd_to_abort->Header.LUN.LunAddrBytes[0],
- TYPE_MSG);
- /* sendcmd turned off interrupts on the board, turn 'em back on. */
- (*c)->access.set_intr_mask(*c, CCISS_INTR_ON);
+ memcpy(lunaddr, &cmd_to_abort->Header.LUN.LunAddrBytes[0], 8);
+ rc = sendcmd_withirq(CCISS_ABORT_MSG, ctlr, &cmd_to_abort->Header.Tag,
+ 0, 0, lunaddr, TYPE_MSG);
if (rc == 0)
return SUCCESS;
return FAILED;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff