[PATCH] ufs: mcq: Adding a function for MCQ enable

Chanwoo Lee
2023-12-20T05:27:54Z

From: ChanWoo Lee <cw9316.lee@samsung.com>

The REG_UFS_MEM_CFG register is too general(broad)
and it is difficult to know the meaning of only values of 0x1 and 0x2.
So far, comments were required.

Therefore, I have added new functions and defines
to improve code readability/reusability.

Signed-off-by: ChanWoo Lee <cw9316.lee@samsung.com>
---
drivers/ufs/core/ufs-mcq.c | 10 +++++++++-
drivers/ufs/core/ufshcd.c | 5 +----
drivers/ufs/host/ufs-mediatek.c | 4 +---
include/ufs/ufshcd.h | 1 +
include/ufs/ufshci.h | 4 ++++
5 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index 0787456c2b89..a34ef3aac540 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -394,11 +394,19 @@ EXPORT_SYMBOL_GPL(ufshcd_mcq_make_queues_operational);

void ufshcd_mcq_enable_esi(struct ufs_hba *hba)
{
- ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | 0x2,
+ ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | ESI_ENABLE,
REG_UFS_MEM_CFG);
}
EXPORT_SYMBOL_GPL(ufshcd_mcq_enable_esi);

+void ufshcd_mcq_enable(struct ufs_hba *hba)
+{
+ ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | MCQ_MODE_SELECT,
+ REG_UFS_MEM_CFG);
+ hba->mcq_enabled = true;
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_enable);
+
void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg)
{
ufshcd_writel(hba, msg->address_lo, REG_UFS_ESILBA);
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index ae9936fc6ffb..8195e01e7a3f 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -8723,10 +8723,7 @@ static void ufshcd_config_mcq(struct ufs_hba *hba)
hba->host->can_queue = hba->nutrs - UFSHCD_NUM_RESERVED;
hba->reserved_slot = hba->nutrs - UFSHCD_NUM_RESERVED;

- /* Select MCQ mode */
- ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | 0x1,
- REG_UFS_MEM_CFG);
- hba->mcq_enabled = true;
+ ufshcd_mcq_enable(hba);

dev_info(hba->dev, "MCQ configured, nr_queues=%d, io_queues=%d, read_queue=%d, poll_queues=%d, queue_depth=%d\n",
hba->nr_hw_queues, hba->nr_queues[HCTX_TYPE_DEFAULT],
diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index fc61790d289b..1048add66419 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1219,9 +1219,7 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba)
ufs_mtk_config_mcq(hba, false);
ufshcd_mcq_make_queues_operational(hba);
ufshcd_mcq_config_mac(hba, hba->nutrs);
- /* Enable MCQ mode */
- ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | 0x1,
- REG_UFS_MEM_CFG);
+ ufshcd_mcq_enable(hba);
}

if (err)
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index d862c8ddce03..a96c45fa4b4b 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -1257,6 +1257,7 @@ unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba,
struct ufs_hw_queue *hwq);
void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba);
void ufshcd_mcq_enable_esi(struct ufs_hba *hba);
+void ufshcd_mcq_enable(struct ufs_hba *hba);
void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg);

int ufshcd_opp_config_clks(struct device *dev, struct opp_table *opp_table,
diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h
index d5accacae6bc..e669fad11fd4 100644
--- a/include/ufs/ufshci.h
+++ b/include/ufs/ufshci.h
@@ -282,6 +282,10 @@ enum {
/* UTMRLRSR - UTP Task Management Request Run-Stop Register 80h */
#define UTP_TASK_REQ_LIST_RUN_STOP_BIT 0x1

+/* REG_UFS_MEM_CFG - Global Config Registers 300h */
+#define MCQ_MODE_SELECT 0x1
+#define ESI_ENABLE 0x2
+
/* CQISy - CQ y Interrupt Status Register */
#define UFSHCD_MCQ_CQIS_TAIL_ENT_PUSH_STS 0x1

--
2.29.0