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Subject[PATCH 3/4] scsi: ufs: core: Add hwq print for debug
Date
Introduce hwq printing function for debug purpose.
- ufshcd_mcq_print_hwqs()

Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
---
drivers/ufs/core/ufs-mcq.c | 32 +++++++++++++++++++++++++++++++-
drivers/ufs/core/ufshcd-priv.h | 9 +++++++++
drivers/ufs/core/ufshcd.c | 18 +++++++++++-------
include/ufs/ufshci.h | 12 ++++++++++++
4 files changed, 63 insertions(+), 8 deletions(-)

diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index 5d5bc0bc6e88..d1ff3ccd2085 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -23,7 +23,6 @@

#define MAX_DEV_CMD_ENTRIES 2
#define MCQ_CFG_MAC_MASK GENMASK(16, 8)
-#define MCQ_QCFG_SIZE 0x40
#define MCQ_ENTRY_SIZE_IN_DWORD 8
#define CQE_UCD_BA GENMASK_ULL(63, 7)

@@ -75,6 +74,13 @@ module_param_cb(poll_queues, &poll_queue_count_ops, &poll_queues, 0644);
MODULE_PARM_DESC(poll_queues,
"Number of poll queues used for r/w. Default value is 1");

+static const int mcq_opr_size[] = {
+ MCQ_SQD_SIZE,
+ MCQ_SQIS_SIZE,
+ MCQ_CQD_SIZE,
+ MCQ_CQIS_SIZE,
+};
+
/**
* ufshcd_mcq_config_mac - Set the #Max Activ Cmds.
* @hba: per adapter instance
@@ -237,6 +243,30 @@ static void __iomem *mcq_opr_base(struct ufs_hba *hba,
return opr->base + opr->stride * i;
}

+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);
+
+ 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);
+
+ 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]);
+ }
+ }
+}
+
u32 ufshcd_mcq_read_cqis(struct ufs_hba *hba, int i)
{
return readl(mcq_opr_base(hba, OPR_CQIS, i) + REG_CQIS);
diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index 529f8507a5e4..13534a9a6d0a 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -6,6 +6,14 @@
#include <linux/pm_runtime.h>
#include <ufs/ufshcd.h>

+#define ufshcd_hex_dump(prefix_str, buf, len) do { \
+ size_t __len = (len); \
+ print_hex_dump(KERN_ERR, prefix_str, \
+ __len > 4 ? DUMP_PREFIX_OFFSET : DUMP_PREFIX_NONE,\
+ 16, 4, buf, __len, false); \
+} while (0)
+
+
static inline bool ufshcd_is_user_access_allowed(struct ufs_hba *hba)
{
return !hba->shutting_down;
@@ -65,6 +73,7 @@ void ufshcd_compl_one_cqe(struct ufs_hba *hba, int task_tag,
struct cq_entry *cqe);
int ufshcd_mcq_init(struct ufs_hba *hba);
int ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba);
+void ufshcd_mcq_print_hwqs(struct ufs_hba *hba, unsigned long bitmap);
int ufshcd_mcq_memory_alloc(struct ufs_hba *hba);
void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba);
void ufshcd_mcq_config_mac(struct ufs_hba *hba, u32 max_active_cmds);
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 81c9f07ebfc8..a15a5a78160c 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -135,13 +135,6 @@ MODULE_PARM_DESC(use_mcq_mode, "Control MCQ mode for controllers starting from U
_ret; \
})

-#define ufshcd_hex_dump(prefix_str, buf, len) do { \
- size_t __len = (len); \
- print_hex_dump(KERN_ERR, prefix_str, \
- __len > 4 ? DUMP_PREFIX_OFFSET : DUMP_PREFIX_NONE,\
- 16, 4, buf, __len, false); \
-} while (0)
-
int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
const char *prefix)
{
@@ -536,6 +529,8 @@ static
void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
{
const struct ufshcd_lrb *lrbp;
+ struct ufs_hw_queue *hwq;
+ struct scsi_cmnd *cmd;
int prdt_length;
int tag;

@@ -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);
+ }
}
+
}

static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap)
diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h
index 11424bb03814..027a2e884f89 100644
--- a/include/ufs/ufshci.h
+++ b/include/ufs/ufshci.h
@@ -185,6 +185,18 @@ static inline u32 ufshci_version(u32 major, u32 minor)
CRYPTO_ENGINE_FATAL_ERROR |\
UIC_LINK_LOST)

+/* MCQ size */
+#define MCQ_QCFG_SIZE 0x40
+#define MCQ_QCFG_SQ_SIZE 0x20
+#define MCQ_QCFG_CQ_SIZE 0x20
+
+enum {
+ MCQ_SQD_SIZE = 0x14,
+ MCQ_SQIS_SIZE = 0x08,
+ MCQ_CQD_SIZE = 0x08,
+ MCQ_CQIS_SIZE = 0x0C,
+};
+
/* HCS - Host Controller Status 30h */
#define DEVICE_PRESENT 0x1
#define UTP_TRANSFER_REQ_LIST_READY 0x2
--
2.18.0
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