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Commit 2ba8bfc8 authored by Stephen M. Cameron's avatar Stephen M. Cameron Committed by James Bottomley
Browse files

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



Signed-off-by: default avatarScott Teel <scott.teel@hp.com>
Signed-off-by: default avatarStephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent d1e8beac

drivers/scsi/hpsa.c

+64 −0
Original line number Diff line number Diff line
@@ -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,

drivers/scsi/hpsa.h

+1 −0
Original line number Diff line number Diff line
@@ -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