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ipr: fix lun assignment and comparison

PATCH In review Wayne Boyer 2 participants 4 messages Nov 4, 2010 1 message not in the archive

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SCSI IBM Power Linux RAID adapter
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A message that is not in the archive (sent off-list or not yet received): [email protected]

Wayne Boyer

author
#1 lore raw

PATCH 1/2 ipr: fix lun assignment and comparison

The lun value was not getting set up correctly for all devices attached to the new 64 bit adapters. The fix is to move the logic to earlier in the ipr_init_res_entry routine such that the value does get set correctly for all devices.

Then the ipr_is_same_device comparison function was using the wrong lun value in the logic for the new adapters. Change this to use the correct lun value.

Signed-off-by Wayne Boyer <[email protected]>

---

 drivers/scsi/ipr.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
drivers/scsi/ipr.c +3 -4
Index: b/drivers/scsi/ipr.c
===================================================================
@@ -1048,6 +1048,8 @@ static void ipr_init_res_entry(struct ip
 			sizeof(res->res_path));
 
 		res->bus = 0;
+		memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
+			sizeof(res->dev_lun.scsi_lun));
 		res->lun = scsilun_to_int(&res->dev_lun);
 
 		if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {

@@ -1063,9 +1065,6 @@ static void ipr_init_res_entry(struct ip
 								  ioa_cfg->max_devs_supported);
 				set_bit(res->target, ioa_cfg->target_ids);
 			}
-
-			memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
-				sizeof(res->dev_lun.scsi_lun));
 		} else if (res->type == IPR_RES_TYPE_IOAFP) {
 			res->bus = IPR_IOAFP_VIRTUAL_BUS;
 			res->target = 0;

@@ -1116,7 +1115,7 @@ static int ipr_is_same_device(struct ipr
 	if (res->ioa_cfg->sis64) {
 		if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
 					sizeof(cfgtew->u.cfgte64->dev_id)) &&
-			!memcmp(&res->lun, &cfgtew->u.cfgte64->lun,
+			!memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
 					sizeof(cfgtew->u.cfgte64->lun))) {
 			return 1;
 		}
author
#3 lore raw

PATCH 2/2 ipr: fix mailbox register definition and add a delay before reading

In reply to a message not in the archive

The definition for the mailbox register for new adapters was incorrect. The value has been updated to the correct offset.

After an adapter reset, the mailbox register on the new adapters takes a number of seconds to stabilize. A delay has been added before reading the register.

Signed-off-by Wayne Boyer <[email protected]>
---
 drivers/scsi/ipr.c |   47 +++++++++++++++++++++++++++++++++++++++++------
 drivers/scsi/ipr.h |    2 ++
 2 files changed, 43 insertions(+), 6 deletions(-)
drivers/scsi/ipr.c +41 -6
Index: b/drivers/scsi/ipr.c
===================================================================
@@ -146,7 +146,7 @@ static const struct ipr_chip_cfg_t ipr_c
 		}
 	},
 	{ /* CRoC */
-		.mailbox = 0x00040,
+		.mailbox = 0x00044,
 		.cache_line_size = 0x20,
 		{
 			.set_interrupt_mask_reg = 0x00010,

@@ -2900,6 +2900,12 @@ static void ipr_get_ioa_dump(struct ipr_
 		return;
 	}
 
+	if (ioa_cfg->sis64) {
+		spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+		ssleep(IPR_DUMP_DELAY_SECONDS);
+		spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+	}
+
 	start_addr = readl(ioa_cfg->ioa_mailbox);
 
 	if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {

@@ -7470,6 +7476,29 @@ static void ipr_get_unit_check_buffer(st
 }
 
 /**
+ * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
+ * @ipr_cmd:	ipr command struct
+ *
+ * Description: This function will call to get the unit check buffer.
+ *
+ * Return value:
+ *	IPR_RC_JOB_RETURN
+ **/
+static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
+{
+	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+
+	ENTER;
+	ioa_cfg->ioa_unit_checked = 0;
+	ipr_get_unit_check_buffer(ioa_cfg);
+	ipr_cmd->job_step = ipr_reset_alert;
+	ipr_reset_start_timer(ipr_cmd, 0);
+
+	LEAVE;
+	return IPR_RC_JOB_RETURN;
+}
+
+/**
  * ipr_reset_restore_cfg_space - Restore PCI config space.
  * @ipr_cmd:	ipr command struct
  *

@@ -7509,11 +7538,17 @@ static int ipr_reset_restore_cfg_space(s
 	}
 
 	if (ioa_cfg->ioa_unit_checked) {
-		ioa_cfg->ioa_unit_checked = 0;
-		ipr_get_unit_check_buffer(ioa_cfg);
-		ipr_cmd->job_step = ipr_reset_alert;
-		ipr_reset_start_timer(ipr_cmd, 0);
-		return IPR_RC_JOB_RETURN;
+		if (ioa_cfg->sis64) {
+			ipr_cmd->job_step = ipr_reset_get_unit_check_job;
+			ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
+			return IPR_RC_JOB_RETURN;
+		} else {
+			ioa_cfg->ioa_unit_checked = 0;
+			ipr_get_unit_check_buffer(ioa_cfg);
+			ipr_cmd->job_step = ipr_reset_alert;
+			ipr_reset_start_timer(ipr_cmd, 0);
+			return IPR_RC_JOB_RETURN;
+		}
 	}
 
 	if (ioa_cfg->in_ioa_bringdown) {
drivers/scsi/ipr.h +2 -0
Index: b/drivers/scsi/ipr.h
===================================================================
@@ -218,6 +218,8 @@
 #define IPR_WAIT_FOR_BIST_TIMEOUT		(2 * HZ)
 #define IPR_PCI_RESET_TIMEOUT			(HZ / 2)
 #define IPR_DUMP_TIMEOUT			(15 * HZ)
+#define IPR_DUMP_DELAY_SECONDS			4
+#define IPR_DUMP_DELAY_TIMEOUT			(IPR_DUMP_DELAY_SECONDS * HZ)
 
 /*
  * SCSI Literals