From: Santosh Vernekar <santosh.vernekar@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Giridhar Malavali <giridhar.malavali@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_fw.h | 18 +++++++++++++++---
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 cebf4f1..42c5587 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 6e53bdb..3ba9a2b 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 {
--
1.6.2.rc1.30.gd43c
--
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