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[SCSI] qla2xxx: Honour "Extended BB credits" bit for CNAs.

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We now enable/disable "Additional Receive Credits" in f/w based on nvram
parameter "Extended_BB_Credits" bit (i.e. Enhanced-Features: at offset 0x196).
This is applicable only for GEN2 CNAs.

Signed-off-by: Santosh Vernekar <santosh.vernekar@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Santosh Vernekar
2010-03-19 16:59:16 -07:00
committed by James Bottomley
parent d88a714bfe
commit cad454b12a
2 changed files with 22 additions and 4 deletions
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18
drivers/scsi/qla2xxx/qla_fw.h
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@@ -1592,10 +1592,22 @@ struct nvram_81xx {
/* Offset 384. */
uint8_t reserved_21[16];
uint16_t reserved_22[8];
uint16_t reserved_22[3];
/*
* BIT 0 = Extended BB credits for LR
* BIT 1 = Virtual Fabric Enable
* BIT 2 = Enhanced Features Unused
* BIT 3-7 = Enhanced Features Reserved
*/
/* Enhanced Features */
uint8_t enhanced_features;
uint8_t reserved_23;
uint16_t reserved_24[4];
/* Offset 416. */
uint16_t reserved_23[32];
uint16_t reserved_25[32];
/* Offset 480. */
uint8_t model_name[16];
@@ -1603,7 +1615,7 @@ struct nvram_81xx {
/* Offset 496. */
uint16_t feature_mask_l;
uint16_t feature_mask_h;
uint16_t reserved_24[2];
uint16_t reserved_26[2];
uint16_t subsystem_vendor_id;
uint16_t subsystem_device_id;