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| author | Bhanu Prakash Gollapudi <bprakash@broadcom.com> | 2011-07-27 11:32:12 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-07-28 12:01:42 +0400 |
| commit | 3c75108fce9be6c72c45e50973b3cbb0fcdb4f19 (patch) | |
| tree | 90d83070c1483abbdcc75b33908eba4a40ca311c /drivers/scsi | |
| parent | fd08bd622d255252095a7d5b20b8305916c6f64e (diff) | |
| download | linux-3c75108fce9be6c72c45e50973b3cbb0fcdb4f19.tar.gz linux-3c75108fce9be6c72c45e50973b3cbb0fcdb4f19.tar.bz2 linux-3c75108fce9be6c72c45e50973b3cbb0fcdb4f19.zip | |
[SCSI] bnx2fc: Tx BDs cache in write tasks
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>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | 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 357a63d192e2..ec893594a127 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 |= |