When there is a single BD for the entire data to be transmitted, use the BD
inside the SGL context and set the cached SGE indication in the task context
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@xxxxxxxxxxxx>
---
drivers/scsi/bnx2fc/bnx2fc_hwi.c | 29 ++++++++++++++++++++++-------
1 files changed, 22 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/bnx2fc/bnx2fc_hwi.c b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
index 357a63d..ec89359 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_hwi.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
@@ -1711,18 +1711,33 @@ void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
task_type = FCOE_TASK_TYPE_READ;
/* Tx only */
+ bd_count = bd_tbl->bd_valid;
if (task_type == FCOE_TASK_TYPE_WRITE) {
- task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
- (u32)bd_tbl->bd_tbl_dma;
- task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
- (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
- task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
- bd_tbl->bd_valid;
+ if ((dev_type == TYPE_DISK) && (bd_count == 1)) {
+ struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
+
+ task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.lo =
+ fcoe_bd_tbl->buf_addr_lo;
+ task->txwr_only.sgl_ctx.cached_sge.cur_buf_addr.hi =
+ fcoe_bd_tbl->buf_addr_hi;
+ task->txwr_only.sgl_ctx.cached_sge.cur_buf_rem =
+ fcoe_bd_tbl->buf_len;
+
+ task->txwr_rxrd.const_ctx.init_flags |= 1 <<
+ FCOE_TCE_TX_WR_RX_RD_CONST_CACHED_SGE_SHIFT;
+ } else {
+ task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo =
+ (u32)bd_tbl->bd_tbl_dma;
+ task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.hi =
+ (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
+ task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size =
+ bd_tbl->bd_valid;
+ }
}
/*Tx Write Rx Read */
/* Init state to NORMAL */
- task->txwr_rxrd.const_ctx.init_flags = task_type <<
+ task->txwr_rxrd.const_ctx.init_flags |= task_type <<
FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
if (dev_type == TYPE_TAPE)
task->txwr_rxrd.const_ctx.init_flags |=
--
1.7.0.6
--
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