[PATCH 10/19] scsi: hisi_sas: add status and command buffer for internal abort

From: John Garry
Date: Thu Aug 10 2017 - 11:49:11 EST


From: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>

For v3 hw, internal abort function required status and command buffer
to be set, so add necessary code for this.

Signed-off-by: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>
Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 86868ec..7e642c8 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1363,12 +1363,21 @@ static int hisi_sas_query_task(struct sas_task *task)
slot->port = port;
task->lldd_task = slot;

+ slot->buf = dma_pool_alloc(hisi_hba->buffer_pool,
+ GFP_ATOMIC, &slot->buf_dma);
+ if (!slot->buf) {
+ rc = -ENOMEM;
+ goto err_out_tag;
+ }
+
memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
+ memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
+ memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);

rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
abort_flag, task_tag);
if (rc)
- goto err_out_tag;
+ goto err_out_buf;


list_add_tail(&slot->entry, &sas_dev->list);
@@ -1386,6 +1395,9 @@ static int hisi_sas_query_task(struct sas_task *task)

return 0;

+err_out_buf:
+ dma_pool_free(hisi_hba->buffer_pool, slot->buf,
+ slot->buf_dma);
err_out_tag:
spin_lock_irqsave(&hisi_hba->lock, flags);
hisi_sas_slot_index_free(hisi_hba, slot_idx);
--
1.9.1