From: Giridhar Malavali <giridhar.malavali@qlogic.com>
Date: Fri, 3 Sep 2010 22:20:56 +0000 (-0700)
Subject: [SCSI] qla2xxx: Increase SG table size to support large IO size per scsi command.
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=58548cb51a824276c34a3227a4917d2e2ded0daa;p=linux.git

[SCSI] qla2xxx: Increase SG table size to support large IO size per scsi command.

The sg table size is increased from 128 to 1024 to support multiple sg lists
and number of sg elements per scsi command.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index ee15f4f10fec5..df7d74f93e509 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2989,6 +2989,8 @@ typedef struct scsi_qla_host {
 
 #define CMD_SP(Cmnd)		((Cmnd)->SCp.ptr)
 
+#define QLA_SG_ALL	1024
+
 enum nexus_wait_type {
 	WAIT_HOST = 0,
 	WAIT_TARGET,
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index e1782f7714003..2e10f2b2e017a 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -2136,8 +2136,16 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	else
 		base_vha->mgmt_svr_loop_id = MANAGEMENT_SERVER +
 						base_vha->vp_idx;
-	if (IS_QLA2100(ha))
-		host->sg_tablesize = 32;
+
+	/* Set the SG table size based on ISP type */
+	if (!IS_FWI2_CAPABLE(ha)) {
+		if (IS_QLA2100(ha))
+			host->sg_tablesize = 32;
+	} else {
+		if (!IS_QLA82XX(ha))
+			host->sg_tablesize = QLA_SG_ALL;
+	}
+
 	host->max_id = max_id;
 	host->this_id = 255;
 	host->cmd_per_lun = 3;