From: Xiang Chen <chenxiang66@hisilicon.com>
Date: Fri, 6 Sep 2019 12:55:31 +0000 (+0800)
Subject: scsi: hisi_sas: Assign NCQ tag for all NCQ commands
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=435a05cf8c003221fd945229e2b61b5ecca9070d;p=linux.git

scsi: hisi_sas: Assign NCQ tag for all NCQ commands

Currently the NCQ tag is only assigned for FPDMA READ and FPDMA WRITE
commands, and for other NCQ commands (such as FPDMA SEND), their NCQ tags
are set in the delivery command to 0.

So for all the NCQ commands, we also need to assign normal NCQ tag for
them, so drop the command type check in hisi_sas_get_ncq_tag() [drop
hisi_sas_get_ncq_tag() altogether actually], and always use the ATA command
NCQ tag when appropriate.

Link: https://lore.kernel.org/r/1567774537-20003-8-git-send-email-john.garry@huawei.com
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index fd998d07ffcd5..a72d06d973fff 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -559,7 +559,6 @@ extern u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis,
 extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port);
 extern void hisi_sas_sata_done(struct sas_task *task,
 			    struct hisi_sas_slot *slot);
-extern int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag);
 extern int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba);
 extern int hisi_sas_probe(struct platform_device *pdev,
 			  const struct hisi_sas_hw *ops);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 6392869a4e414..751db9588a1ee 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -118,21 +118,6 @@ void hisi_sas_sata_done(struct sas_task *task,
 }
 EXPORT_SYMBOL_GPL(hisi_sas_sata_done);
 
-int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag)
-{
-	struct ata_queued_cmd *qc = task->uldd_task;
-
-	if (qc) {
-		if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
-			qc->tf.command == ATA_CMD_FPDMA_READ) {
-			*tag = qc->tag;
-			return 1;
-		}
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag);
-
 /*
  * This function assumes linkrate mask fits in 8 bits, which it
  * does for all HW versions supported.
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index fba4fcad47357..9d316f28c74c5 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -2534,7 +2534,10 @@ static void prep_ata_v2_hw(struct hisi_hba *hisi_hba,
 	hdr->dw1 = cpu_to_le32(dw1);
 
 	/* dw2 */
-	if (task->ata_task.use_ncq && hisi_sas_get_ncq_tag(task, &hdr_tag)) {
+	if (task->ata_task.use_ncq) {
+		struct ata_queued_cmd *qc = task->uldd_task;
+
+		hdr_tag = qc->tag;
 		task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
 		dw2 |= hdr_tag << CMD_HDR_NCQ_TAG_OFF;
 	}
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 4c32088b91990..cd901213a59b7 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -1356,7 +1356,10 @@ static void prep_ata_v3_hw(struct hisi_hba *hisi_hba,
 	hdr->dw1 = cpu_to_le32(dw1);
 
 	/* dw2 */
-	if (task->ata_task.use_ncq && hisi_sas_get_ncq_tag(task, &hdr_tag)) {
+	if (task->ata_task.use_ncq) {
+		struct ata_queued_cmd *qc = task->uldd_task;
+
+		hdr_tag = qc->tag;
 		task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
 		dw2 |= hdr_tag << CMD_HDR_NCQ_TAG_OFF;
 	}