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| author | Santosh Vernekar <santosh.vernekar@qlogic.com> | 2010-03-19 16:59:16 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-03-27 15:11:29 -0400 |
| commit | cad454b12a23c24fd7f409402cf51434655e76c1 (patch) | |
| tree | 4cf65ae456d4afab9491492ca1343d3a86167c06 | |
| parent | d88a714bfefa7aed7b9cb6c3721707fcd056b472 (diff) | |
| download | linux-lfu-cad454b12a23c24fd7f409402cf51434655e76c1.tar.gz linux-lfu-cad454b12a23c24fd7f409402cf51434655e76c1.tar.xz | |
[SCSI] qla2xxx: Honour "Extended BB credits" bit for CNAs.
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>
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_fw.h | 18 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mbx.c | 8 |
2 files changed, 22 insertions, 4 deletions
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h index cebf4f1bb7d..42c5587cc50 100644 --- a/drivers/scsi/qla2xxx/qla_fw.h +++ b/drivers/scsi/qla2xxx/qla_fw.h @@ -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; diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 6e53bdbb1da..3ba9a2b5655 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -339,6 +339,7 @@ qla2x00_load_ram(scsi_qla_host_t *vha, dma_addr_t req_dma, uint32_t risc_addr, return rval; } +#define EXTENDED_BB_CREDITS BIT_0 /* * qla2x00_execute_fw * Start adapter firmware. @@ -371,7 +372,12 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr) mcp->mb[1] = MSW(risc_addr); mcp->mb[2] = LSW(risc_addr); mcp->mb[3] = 0; - mcp->mb[4] = 0; + if (IS_QLA81XX(ha)) { + struct nvram_81xx *nv = ha->nvram; + mcp->mb[4] = (nv->enhanced_features & + EXTENDED_BB_CREDITS); + } else + mcp->mb[4] = 0; mcp->out_mb |= MBX_4|MBX_3|MBX_2|MBX_1; mcp->in_mb |= MBX_1; } else { |