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Date: Tue, 14 Mar 2023 19:16:32 +0800
From: Ziqi Chen <quic_ziqichen@...cinc.com>
To: quic_asutoshd@...cinc.com, quic_cang@...cinc.com,
quic_nguyenb@...cinc.com, bvanassche@....org, mani@...nel.org,
stanley.chu@...iatek.com, adrian.hunter@...el.com,
beanhuo@...ron.com, avri.altman@....com, junwoo80.lee@...sung.com,
martin.petersen@...cle.com, quic_ziqichen@...cinc.com
Cc: linux-scsi@...r.kernel.org, Alim Akhtar <alim.akhtar@...sung.com>,
"James E.J. Bottomley" <jejb@...ux.ibm.com>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2] scsi: ufs: core: print trs for pending requests in MCQ mode
We don't have outstanding_reqs bitmap in MCQ mode. And in consideration
of the queue depth may increase beyond 64 in the future, we reworked
ufshcd_print_trs() to get rid of usage of bitmap so that we can print
trs for pending requests in both SDB and MCQ mode.
Signed-off-by: Ziqi Chen <quic_ziqichen@...cinc.com>
---
Changes to v1:
- Use blk_mq_tagset_busy_iter() to iterate over pending requests.
---
drivers/ufs/core/ufshcd.c | 97 ++++++++++++++++++++++++++++-------------------
1 file changed, 58 insertions(+), 39 deletions(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 1d58cb2..3ce1be5 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -542,48 +542,67 @@ static void ufshcd_print_evt_hist(struct ufs_hba *hba)
}
static
-void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
+void ufshcd_print_tr(struct ufs_hba *hba, int tag, bool pr_prdt)
{
const struct ufshcd_lrb *lrbp;
int prdt_length;
- int tag;
- for_each_set_bit(tag, &bitmap, hba->nutrs) {
- lrbp = &hba->lrb[tag];
+ lrbp = &hba->lrb[tag];
- dev_err(hba->dev, "UPIU[%d] - issue time %lld us\n",
- tag, div_u64(lrbp->issue_time_stamp_local_clock, 1000));
- dev_err(hba->dev, "UPIU[%d] - complete time %lld us\n",
- tag, div_u64(lrbp->compl_time_stamp_local_clock, 1000));
- dev_err(hba->dev,
- "UPIU[%d] - Transfer Request Descriptor phys@...llx\n",
- tag, (u64)lrbp->utrd_dma_addr);
-
- ufshcd_hex_dump("UPIU TRD: ", lrbp->utr_descriptor_ptr,
- sizeof(struct utp_transfer_req_desc));
- dev_err(hba->dev, "UPIU[%d] - Request UPIU phys@...llx\n", tag,
- (u64)lrbp->ucd_req_dma_addr);
- ufshcd_hex_dump("UPIU REQ: ", lrbp->ucd_req_ptr,
- sizeof(struct utp_upiu_req));
- dev_err(hba->dev, "UPIU[%d] - Response UPIU phys@...llx\n", tag,
- (u64)lrbp->ucd_rsp_dma_addr);
- ufshcd_hex_dump("UPIU RSP: ", lrbp->ucd_rsp_ptr,
- sizeof(struct utp_upiu_rsp));
-
- prdt_length = le16_to_cpu(
- lrbp->utr_descriptor_ptr->prd_table_length);
- if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN)
- prdt_length /= ufshcd_sg_entry_size(hba);
+ dev_err(hba->dev, "UPIU[%d] - issue time %lld us\n",
+ tag, div_u64(lrbp->issue_time_stamp_local_clock, 1000));
+ dev_err(hba->dev, "UPIU[%d] - complete time %lld us\n",
+ tag, div_u64(lrbp->compl_time_stamp_local_clock, 1000));
+ dev_err(hba->dev,
+ "UPIU[%d] - Transfer Request Descriptor phys@...llx\n",
+ tag, (u64)lrbp->utrd_dma_addr);
+
+ ufshcd_hex_dump("UPIU TRD: ", lrbp->utr_descriptor_ptr,
+ sizeof(struct utp_transfer_req_desc));
+ dev_err(hba->dev, "UPIU[%d] - Request UPIU phys@...llx\n", tag,
+ (u64)lrbp->ucd_req_dma_addr);
+ ufshcd_hex_dump("UPIU REQ: ", lrbp->ucd_req_ptr,
+ sizeof(struct utp_upiu_req));
+ dev_err(hba->dev, "UPIU[%d] - Response UPIU phys@...llx\n", tag,
+ (u64)lrbp->ucd_rsp_dma_addr);
+ ufshcd_hex_dump("UPIU RSP: ", lrbp->ucd_rsp_ptr,
+ sizeof(struct utp_upiu_rsp));
+
+ prdt_length = le16_to_cpu(
+ lrbp->utr_descriptor_ptr->prd_table_length);
+ if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN)
+ prdt_length /= ufshcd_sg_entry_size(hba);
- dev_err(hba->dev,
- "UPIU[%d] - PRDT - %d entries phys@...llx\n",
- tag, prdt_length,
- (u64)lrbp->ucd_prdt_dma_addr);
+ dev_err(hba->dev,
+ "UPIU[%d] - PRDT - %d entries phys@...llx\n",
+ tag, prdt_length,
+ (u64)lrbp->ucd_prdt_dma_addr);
- if (pr_prdt)
- ufshcd_hex_dump("UPIU PRDT: ", lrbp->ucd_prdt_ptr,
- ufshcd_sg_entry_size(hba) * prdt_length);
- }
+ if (pr_prdt)
+ ufshcd_hex_dump("UPIU PRDT: ", lrbp->ucd_prdt_ptr,
+ ufshcd_sg_entry_size(hba) * prdt_length);
+}
+
+static bool ufshcd_print_tr_iter(struct request *req, void *priv)
+{
+ struct scsi_device *sdev = req->q->queuedata;
+ struct Scsi_Host *shost = sdev->host;
+ struct ufs_hba *hba = shost_priv(shost);
+
+ if (!IS_ERR_OR_NULL(hba))
+ ufshcd_print_tr(hba, req->tag, *(bool *)priv);
+
+ return true;
+}
+
+/**
+ * ufshcd_print_trs_all - print trs for all started requests.
+ * @hba: per-adapter instance.
+ * @pr_prdt: need to print prdt or not.
+ */
+static void ufshcd_print_trs_all(struct ufs_hba *hba, bool pr_prdt)
+{
+ blk_mq_tagset_busy_iter(&hba->host->tag_set, ufshcd_print_tr_iter, &pr_prdt);
}
static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap)
@@ -5332,7 +5351,7 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp,
if ((host_byte(result) != DID_OK) &&
(host_byte(result) != DID_REQUEUE) && !hba->silence_err_logs)
- ufshcd_print_trs(hba, 1 << lrbp->task_tag, true);
+ ufshcd_print_tr(hba, lrbp->task_tag, true);
return result;
}
@@ -6406,7 +6425,7 @@ static void ufshcd_err_handler(struct work_struct *work)
ufshcd_print_pwr_info(hba);
ufshcd_print_evt_hist(hba);
ufshcd_print_tmrs(hba, hba->outstanding_tasks);
- ufshcd_print_trs(hba, hba->outstanding_reqs, pr_prdt);
+ ufshcd_print_trs_all(hba, pr_prdt);
spin_lock_irqsave(hba->host->host_lock, flags);
}
@@ -7435,9 +7454,9 @@ static int ufshcd_abort(struct scsi_cmnd *cmd)
ufshcd_print_evt_hist(hba);
ufshcd_print_host_state(hba);
ufshcd_print_pwr_info(hba);
- ufshcd_print_trs(hba, 1 << tag, true);
+ ufshcd_print_tr(hba, tag, true);
} else {
- ufshcd_print_trs(hba, 1 << tag, false);
+ ufshcd_print_tr(hba, tag, false);
}
hba->req_abort_count++;
--
2.7.4
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