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[SCSI] hpsa add sysfs debug switch for raid map debugging messages

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Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Stephen M. Cameron 2014-02-18 13:57:52 -06:00 committed by James Bottomley
parent d1e8beac49
commit 2ba8bfc82e
2 changed files with 65 additions and 0 deletions
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64
drivers/scsi/hpsa.c
View File

@ -312,6 +312,31 @@ static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
return count;
}
static ssize_t host_store_raid_offload_debug(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int debug_level, len;
struct ctlr_info *h;
struct Scsi_Host *shost = class_to_shost(dev);
char tmpbuf[10];
if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
return -EACCES;
len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
strncpy(tmpbuf, buf, len);
tmpbuf[len] = '\0';
if (sscanf(tmpbuf, "%d", &debug_level) != 1)
return -EINVAL;
if (debug_level < 0)
debug_level = 0;
h = shost_to_hba(shost);
h->raid_offload_debug = debug_level;
dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
h->raid_offload_debug);
return count;
}
static ssize_t host_store_rescan(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@ -585,6 +610,8 @@ static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
host_show_hp_ssd_smart_path_status,
host_store_hp_ssd_smart_path_status);
static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
host_store_raid_offload_debug);
static DEVICE_ATTR(firmware_revision, S_IRUGO,
host_show_firmware_revision, NULL);
static DEVICE_ATTR(commands_outstanding, S_IRUGO,
@ -609,6 +636,7 @@ static struct device_attribute *hpsa_shost_attrs[] = {
&dev_attr_transport_mode,
&dev_attr_resettable,
&dev_attr_hp_ssd_smart_path_status,
&dev_attr_raid_offload_debug,
NULL,
};
@ -2020,6 +2048,10 @@ static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
if (rc != 0)
return;
/* Show details only if debugging has been activated. */
if (h->raid_offload_debug < 2)
return;
dev_info(&h->pdev->dev, "structure_size = %u\n",
le32_to_cpu(map_buff->structure_size));
dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
@ -2505,6 +2537,17 @@ static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
scsi_nexus = cpu_to_le32((u32) c2a->scsi_nexus);
find = c2a->scsi_nexus;
if (h->raid_offload_debug > 0)
dev_info(&h->pdev->dev,
"%s: scsi_nexus:0x%08x device id: 0x%02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x\n",
__func__, scsi_nexus,
d->device_id[0], d->device_id[1], d->device_id[2],
d->device_id[3], d->device_id[4], d->device_id[5],
d->device_id[6], d->device_id[7], d->device_id[8],
d->device_id[9], d->device_id[10], d->device_id[11],
d->device_id[12], d->device_id[13], d->device_id[14],
d->device_id[15]);
/* Get the list of physical devices */
physicals = kzalloc(reportsize, GFP_KERNEL);
if (hpsa_scsi_do_report_phys_luns(h, (struct ReportLUNdata *) physicals,
@ -2529,6 +2572,15 @@ static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
found = 1;
memcpy(scsi3addr, &((struct ReportExtendedLUNdata *)
physicals)->LUN[i][0], 8);
if (h->raid_offload_debug > 0)
dev_info(&h->pdev->dev,
"%s: Searched h=0x%08x, Found h=0x%08x, scsiaddr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
__func__, find,
((struct ReportExtendedLUNdata *)
physicals)->LUN[i][20],
scsi3addr[0], scsi3addr[1], scsi3addr[2],
scsi3addr[3], scsi3addr[4], scsi3addr[5],
scsi3addr[6], scsi3addr[7]);
break; /* found it */
}
@ -4077,6 +4129,13 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
return -1; /* not abortable */
}
if (h->raid_offload_debug > 0)
dev_info(&h->pdev->dev,
"Reset as abort: Abort requested on C%d:B%d:T%d:L%d scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
if (!dev->offload_enabled) {
dev_warn(&h->pdev->dev,
"Can't abort: device is not operating in HP SSD Smart Path mode.\n");
@ -4090,6 +4149,11 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
}
/* send the reset */
if (h->raid_offload_debug > 0)
dev_info(&h->pdev->dev,
"Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
psa[0], psa[1], psa[2], psa[3],
psa[4], psa[5], psa[6], psa[7]);
rc = hpsa_send_reset(h, psa, HPSA_RESET_TYPE_TARGET);
if (rc != 0) {
dev_warn(&h->pdev->dev,

1
drivers/scsi/hpsa.h
View File

@ -199,6 +199,7 @@ struct ctlr_info {
CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE)
int acciopath_status;
int drv_req_rescan; /* flag for driver to request rescan event */
int raid_offload_debug;
};
#define HPSA_ABORT_MSG 0
#define HPSA_DEVICE_RESET_MSG 1