Re: [PATCH v2 4/7] scsi: ufs: core: Add hwq print for debug

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Hi Po-Wen,

On 2/22/2023 11:04 AM, Po-Wen Kao wrote:
+void ufshcd_mcq_print_hwqs(struct ufs_hba *hba, unsigned long bitmap)
+{
+	int id, i;
+	char prefix[15];
+
+	if (!is_mcq_enabled(hba))
+		return;
+
+	for_each_set_bit(id, &bitmap, hba->nr_hw_queues) {
+		snprintf(prefix, sizeof(prefix), "q%d SQCFG: ", id);
+		ufshcd_hex_dump(prefix,
+			hba->mcq_base + MCQ_QCFG_SIZE * id, MCQ_QCFG_SQ_SIZE);

Is your purpose dump per hardware queue registers here?  If yes, why don't use ufsmcq_readl() to save to a buffer and then use ufshcd_hex_dump()

to dump ? Are you sure ufshcd_hex_dump() can dump register directly?

+
+		snprintf(prefix, sizeof(prefix), "q%d CQCFG: ", id);
+		ufshcd_hex_dump(prefix,
+			hba->mcq_base + MCQ_QCFG_SIZE * id + MCQ_QCFG_SQ_SIZE, MCQ_QCFG_CQ_SIZE);
Same to above comment.
+
+		for (i = 0; i < OPR_MAX ; i++) {
+			snprintf(prefix, sizeof(prefix), "q%d OPR%d: ", id, i);
+			ufshcd_hex_dump(prefix, mcq_opr_base(hba, i, id), mcq_opr_size[i]);
Same.
+		}
+	}
+}
+

@@ -574,7 +569,16 @@ void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
  		if (pr_prdt)
  			ufshcd_hex_dump("UPIU PRDT: ", lrbp->ucd_prdt_ptr,
  				ufshcd_sg_entry_size(hba) * prdt_length);
+
+		if (is_mcq_enabled(hba)) {
+			cmd = lrbp->cmd;
+			if (!cmd)
+				return;
+			hwq = ufshcd_mcq_req_to_hwq(hba, scsi_cmd_to_rq(cmd));
+			ufshcd_mcq_print_hwqs(hba, 1 << hwq->id);

Calling registers dump function in ufshcd_print_trs() is not reasonable, eg.. for each aborted request, it would print out all hwq registers, it's not make sense.

I think we should move it out of ufshcd_print_trs().

+		}
  	}
+
  }


Best Regards,

Ziqi




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