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[SCSI] bnx2fc: Tx BDs cache in write tasks

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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@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Bhanu Prakash Gollapudi
2011-07-27 11:32:12 -07:00
committed by James Bottomley
parent fd08bd622d
commit 3c75108fce
1 changed files with 22 additions and 7 deletions
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29
drivers/scsi/bnx2fc/bnx2fc_hwi.c
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@@ -1711,18 +1711,33 @@ void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
task_type = FCOE_TASK_TYPE_READ; task_type = FCOE_TASK_TYPE_READ;
/* Tx only */ /* Tx only */
bd_count = bd_tbl->bd_valid;
if (task_type == FCOE_TASK_TYPE_WRITE) { if (task_type == FCOE_TASK_TYPE_WRITE) {
task->txwr_only.sgl_ctx.sgl.mul_sgl.cur_sge_addr.lo = if ((dev_type == TYPE_DISK) && (bd_count == 1)) {
(u32)bd_tbl->bd_tbl_dma; struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
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.cached_sge.cur_buf_addr.lo =
task->txwr_only.sgl_ctx.sgl.mul_sgl.sgl_size = fcoe_bd_tbl->buf_addr_lo;
bd_tbl->bd_valid; 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 */ /*Tx Write Rx Read */
/* Init state to NORMAL */ /* 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; FCOE_TCE_TX_WR_RX_RD_CONST_TASK_TYPE_SHIFT;
if (dev_type == TYPE_TAPE) if (dev_type == TYPE_TAPE)
task->txwr_rxrd.const_ctx.init_flags |= task->txwr_rxrd.const_ctx.init_flags |=