* [PATCH v6 1/8] scsi: ufs: enable WriteBooster on some pre-3.1 UFS devices
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
2020-05-04 14:56 ` [PATCH v6 2/8] scsi: ufs: introduce fixup_dev_quirks vops Stanley Chu
` (6 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
WriteBooster feature can be supported by some pre-3.1 UFS devices
by upgrading firmware.
To enable WriteBooster feature in such devices, introduce a device
quirk to relax the entrance condition of ufshcd_wb_probe() to allow
host driver to check those devices' WriteBooster capability.
WriteBooster feature can be available if below all conditions are
satisfied,
1. Host enables WriteBooster capability
2. UFS 3.1 device or UFS pre-3.1 device with quirk
UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES enabled
3. WriteBooster support is specified in above field
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs_quirks.h | 7 ++++
drivers/scsi/ufs/ufshcd.c | 64 +++++++++++++++++++++--------------
2 files changed, 46 insertions(+), 25 deletions(-)
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
index df7a1e6805a3..e3175a63c676 100644
--- a/drivers/scsi/ufs/ufs_quirks.h
+++ b/drivers/scsi/ufs/ufs_quirks.h
@@ -101,4 +101,11 @@ struct ufs_dev_fix {
*/
#define UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME (1 << 9)
+/*
+ * Some pre-3.1 UFS devices can support extended features by upgrading
+ * the firmware. Enable this quirk to make UFS core driver probe and enable
+ * supported features on such devices.
+ */
+#define UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES (1 << 10)
+
#endif /* UFS_QUIRKS_H_ */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 915e963398c4..31411fd87796 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6800,9 +6800,16 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba)
static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
{
+ if (!ufshcd_is_wb_allowed(hba))
+ return;
+
hba->dev_info.d_ext_ufs_feature_sup =
get_unaligned_be32(desc_buf +
DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
+
+ if (!(hba->dev_info.d_ext_ufs_feature_sup & UFS_DEV_WRITE_BOOSTER_SUP))
+ goto wb_disabled;
+
/*
* WB may be supported but not configured while provisioning.
* The spec says, in dedicated wb buffer mode,
@@ -6818,11 +6825,29 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
hba->dev_info.b_presrv_uspc_en =
desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN];
- if (!((hba->dev_info.d_ext_ufs_feature_sup &
- UFS_DEV_WRITE_BOOSTER_SUP) &&
- hba->dev_info.b_wb_buffer_type &&
+ if (!(hba->dev_info.b_wb_buffer_type &&
hba->dev_info.d_wb_alloc_units))
- hba->caps &= ~UFSHCD_CAP_WB_EN;
+ goto wb_disabled;
+
+ return;
+
+wb_disabled:
+ hba->caps &= ~UFSHCD_CAP_WB_EN;
+}
+
+static void ufs_fixup_device_setup(struct ufs_hba *hba)
+{
+ struct ufs_dev_fix *f;
+ struct ufs_dev_info *dev_info = &hba->dev_info;
+
+ for (f = ufs_fixups; f->quirk; f++) {
+ if ((f->wmanufacturerid == dev_info->wmanufacturerid ||
+ f->wmanufacturerid == UFS_ANY_VENDOR) &&
+ ((dev_info->model &&
+ STR_PRFX_EQUAL(f->model, dev_info->model)) ||
+ !strcmp(f->model, UFS_ANY_MODEL)))
+ hba->dev_quirks |= f->quirk;
+ }
}
static int ufs_get_device_desc(struct ufs_hba *hba)
@@ -6862,10 +6887,6 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME];
- /* Enable WB only for UFS-3.1 */
- if (dev_info->wspecversion >= 0x310)
- ufshcd_wb_probe(hba, desc_buf);
-
err = ufshcd_read_string_desc(hba, model_index,
&dev_info->model, SD_ASCII_STD);
if (err < 0) {
@@ -6874,6 +6895,16 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
goto out;
}
+ ufs_fixup_device_setup(hba);
+
+ /*
+ * Probe WB only for UFS-3.1 devices or UFS devices with quirk
+ * UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES enabled
+ */
+ if (dev_info->wspecversion >= 0x310 ||
+ (hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES))
+ ufshcd_wb_probe(hba, desc_buf);
+
/*
* ufshcd_read_string_desc returns size of the string
* reset the error value
@@ -6893,21 +6924,6 @@ static void ufs_put_device_desc(struct ufs_hba *hba)
dev_info->model = NULL;
}
-static void ufs_fixup_device_setup(struct ufs_hba *hba)
-{
- struct ufs_dev_fix *f;
- struct ufs_dev_info *dev_info = &hba->dev_info;
-
- for (f = ufs_fixups; f->quirk; f++) {
- if ((f->wmanufacturerid == dev_info->wmanufacturerid ||
- f->wmanufacturerid == UFS_ANY_VENDOR) &&
- ((dev_info->model &&
- STR_PRFX_EQUAL(f->model, dev_info->model)) ||
- !strcmp(f->model, UFS_ANY_MODEL)))
- hba->dev_quirks |= f->quirk;
- }
-}
-
/**
* ufshcd_tune_pa_tactivate - Tunes PA_TActivate of local UniPro
* @hba: per-adapter instance
@@ -7244,8 +7260,6 @@ static int ufshcd_device_params_init(struct ufs_hba *hba)
ufshcd_get_ref_clk_gating_wait(hba);
- ufs_fixup_device_setup(hba);
-
if (!ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_READ_FLAG,
QUERY_FLAG_IDN_PWR_ON_WPE, &flag))
hba->dev_info.f_power_on_wp_en = flag;
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v6 2/8] scsi: ufs: introduce fixup_dev_quirks vops
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
2020-05-04 14:56 ` [PATCH v6 1/8] scsi: ufs: enable WriteBooster on some pre-3.1 UFS devices Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
2020-05-04 14:56 ` [PATCH v6 3/8] scsi: ufs: export ufs_fixup_device_setup() function Stanley Chu
` (5 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
Some UFS deivces may have required device quirks or have non-standard
features which are enabled only on specified UFS hosts or for special
customers.
To not "pollute" common device quirk list, i.e., ufs_fixups table for
those devices mentioned above, introduce "fixup_dev_quirks" vops to
allow vendors to fix or modify device quirks accordingly.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 1 +
drivers/scsi/ufs/ufshcd.h | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 31411fd87796..fc1549f829cc 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6896,6 +6896,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
}
ufs_fixup_device_setup(hba);
+ ufshcd_vops_fixup_dev_quirks(hba);
/*
* Probe WB only for UFS-3.1 devices or UFS devices with quirk
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 056537e52c19..5fa03e0f3bd1 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -336,6 +336,7 @@ struct ufs_hba_variant_ops {
void (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
enum ufs_notify_change_status);
int (*apply_dev_quirks)(struct ufs_hba *hba);
+ void (*fixup_dev_quirks)(struct ufs_hba *hba);
int (*suspend)(struct ufs_hba *, enum ufs_pm_op);
int (*resume)(struct ufs_hba *, enum ufs_pm_op);
void (*dbg_register_dump)(struct ufs_hba *hba);
@@ -1085,6 +1086,12 @@ static inline int ufshcd_vops_apply_dev_quirks(struct ufs_hba *hba)
return 0;
}
+static inline void ufshcd_vops_fixup_dev_quirks(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->fixup_dev_quirks)
+ hba->vops->fixup_dev_quirks(hba);
+}
+
static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)
{
if (hba->vops && hba->vops->suspend)
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v6 3/8] scsi: ufs: export ufs_fixup_device_setup() function
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
2020-05-04 14:56 ` [PATCH v6 1/8] scsi: ufs: enable WriteBooster on some pre-3.1 UFS devices Stanley Chu
2020-05-04 14:56 ` [PATCH v6 2/8] scsi: ufs: introduce fixup_dev_quirks vops Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
2020-05-04 14:56 ` [PATCH v6 4/8] scsi: ufs-mediatek: add fixup_dev_quirks vops Stanley Chu
` (4 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
Export ufs_fixup_device_setup() to allow vendors to re-use it for
fixing device quriks on specified UFS hosts.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufshcd.c | 7 ++++---
drivers/scsi/ufs/ufshcd.h | 4 +++-
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index fc1549f829cc..ba8185625109 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6835,12 +6835,12 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
hba->caps &= ~UFSHCD_CAP_WB_EN;
}
-static void ufs_fixup_device_setup(struct ufs_hba *hba)
+void ufshcd_fixup_device_setup(struct ufs_hba *hba, struct ufs_dev_fix *fixups)
{
struct ufs_dev_fix *f;
struct ufs_dev_info *dev_info = &hba->dev_info;
- for (f = ufs_fixups; f->quirk; f++) {
+ for (f = fixups; f->quirk; f++) {
if ((f->wmanufacturerid == dev_info->wmanufacturerid ||
f->wmanufacturerid == UFS_ANY_VENDOR) &&
((dev_info->model &&
@@ -6849,6 +6849,7 @@ static void ufs_fixup_device_setup(struct ufs_hba *hba)
hba->dev_quirks |= f->quirk;
}
}
+EXPORT_SYMBOL_GPL(ufshcd_fixup_device_setup);
static int ufs_get_device_desc(struct ufs_hba *hba)
{
@@ -6895,7 +6896,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
goto out;
}
- ufs_fixup_device_setup(hba);
+ ufshcd_fixup_device_setup(hba, ufs_fixups);
ufshcd_vops_fixup_dev_quirks(hba);
/*
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 5fa03e0f3bd1..f34601121880 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -69,6 +69,7 @@
#include <scsi/scsi_eh.h>
#include "ufs.h"
+#include "ufs_quirks.h"
#include "ufshci.h"
#define UFSHCD "ufshcd"
@@ -951,7 +952,8 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
-
+void ufshcd_fixup_device_setup(struct ufs_hba *hba,
+ struct ufs_dev_fix *fixups);
#define SD_ASCII_STD true
#define SD_RAW false
int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v6 4/8] scsi: ufs-mediatek: add fixup_dev_quirks vops
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
` (2 preceding siblings ...)
2020-05-04 14:56 ` [PATCH v6 3/8] scsi: ufs: export ufs_fixup_device_setup() function Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
2020-05-04 14:56 ` [PATCH v6 5/8] scsi: ufs: add "index" in parameter list of ufshcd_query_flag() Stanley Chu
` (3 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
Add fixup_dev_quirk vops in MediaTek UFS platforms and provide
an initial vendor-specific device quirk table.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 673c16596fb2..ce7ba529e613 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -30,6 +30,12 @@
#define ufs_mtk_device_reset_ctrl(high, res) \
ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, high, res)
+static struct ufs_dev_fix ufs_mtk_dev_fixups[] = {
+ UFS_FIX(UFS_VENDOR_SKHYNIX, "H9HQ21AFAMZDAR",
+ UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES),
+ END_FIX
+};
+
static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable)
{
u32 tmp;
@@ -555,10 +561,8 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba)
struct ufs_dev_info *dev_info = &hba->dev_info;
u16 mid = dev_info->wmanufacturerid;
- if (mid == UFS_VENDOR_SAMSUNG) {
- hba->dev_quirks &= ~UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE;
+ if (mid == UFS_VENDOR_SAMSUNG)
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
- }
/*
* Decide waiting time before gating reference clock and
@@ -575,6 +579,17 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba)
return 0;
}
+void ufs_mtk_fixup_dev_quirks(struct ufs_hba *hba)
+{
+ struct ufs_dev_info *dev_info = &hba->dev_info;
+ u16 mid = dev_info->wmanufacturerid;
+
+ ufshcd_fixup_device_setup(hba, ufs_mtk_dev_fixups);
+
+ if (mid == UFS_VENDOR_SAMSUNG)
+ hba->dev_quirks &= ~UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE;
+}
+
/**
* struct ufs_hba_mtk_vops - UFS MTK specific variant operations
*
@@ -589,6 +604,7 @@ static struct ufs_hba_variant_ops ufs_hba_mtk_vops = {
.link_startup_notify = ufs_mtk_link_startup_notify,
.pwr_change_notify = ufs_mtk_pwr_change_notify,
.apply_dev_quirks = ufs_mtk_apply_dev_quirks,
+ .fixup_dev_quirks = ufs_mtk_fixup_dev_quirks,
.suspend = ufs_mtk_suspend,
.resume = ufs_mtk_resume,
.dbg_register_dump = ufs_mtk_dbg_register_dump,
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v6 5/8] scsi: ufs: add "index" in parameter list of ufshcd_query_flag()
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
` (3 preceding siblings ...)
2020-05-04 14:56 ` [PATCH v6 4/8] scsi: ufs-mediatek: add fixup_dev_quirks vops Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
2020-05-04 14:56 ` [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support for WriteBooster Stanley Chu
` (2 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
For preparation of LU Dedicated buffer mode support on WriteBooster
feature, "index" parameter shall be added and allowed to be specified
by callers.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
---
drivers/scsi/ufs/ufs-sysfs.c | 2 +-
drivers/scsi/ufs/ufshcd.c | 28 +++++++++++++++-------------
drivers/scsi/ufs/ufshcd.h | 2 +-
3 files changed, 17 insertions(+), 15 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index 93484408bc40..b86b6a40d7e6 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -631,7 +631,7 @@ static ssize_t _name##_show(struct device *dev, \
struct ufs_hba *hba = dev_get_drvdata(dev); \
pm_runtime_get_sync(hba->dev); \
ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \
- QUERY_FLAG_IDN##_uname, &flag); \
+ QUERY_FLAG_IDN##_uname, 0, &flag); \
pm_runtime_put_sync(hba->dev); \
if (ret) \
return -EINVAL; \
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index ba8185625109..f35304a9741a 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2782,13 +2782,13 @@ static inline void ufshcd_init_query(struct ufs_hba *hba,
}
static int ufshcd_query_flag_retry(struct ufs_hba *hba,
- enum query_opcode opcode, enum flag_idn idn, bool *flag_res)
+ enum query_opcode opcode, enum flag_idn idn, u8 index, bool *flag_res)
{
int ret;
int retries;
for (retries = 0; retries < QUERY_REQ_RETRIES; retries++) {
- ret = ufshcd_query_flag(hba, opcode, idn, flag_res);
+ ret = ufshcd_query_flag(hba, opcode, idn, index, flag_res);
if (ret)
dev_dbg(hba->dev,
"%s: failed with error %d, retries %d\n",
@@ -2809,16 +2809,17 @@ static int ufshcd_query_flag_retry(struct ufs_hba *hba,
* @hba: per-adapter instance
* @opcode: flag query to perform
* @idn: flag idn to access
+ * @index: flag index to access
* @flag_res: the flag value after the query request completes
*
* Returns 0 for success, non-zero in case of failure
*/
int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
- enum flag_idn idn, bool *flag_res)
+ enum flag_idn idn, u8 index, bool *flag_res)
{
struct ufs_query_req *request = NULL;
struct ufs_query_res *response = NULL;
- int err, index = 0, selector = 0;
+ int err, selector = 0;
int timeout = QUERY_REQ_TIMEOUT;
BUG_ON(!hba);
@@ -4175,7 +4176,7 @@ static int ufshcd_complete_dev_init(struct ufs_hba *hba)
bool flag_res = true;
err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
- QUERY_FLAG_IDN_FDEVICEINIT, NULL);
+ QUERY_FLAG_IDN_FDEVICEINIT, 0, NULL);
if (err) {
dev_err(hba->dev,
"%s setting fDeviceInit flag failed with error %d\n",
@@ -4186,7 +4187,7 @@ static int ufshcd_complete_dev_init(struct ufs_hba *hba)
/* poll for max. 1000 iterations for fDeviceInit flag to clear */
for (i = 0; i < 1000 && !err && flag_res; i++)
err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_READ_FLAG,
- QUERY_FLAG_IDN_FDEVICEINIT, &flag_res);
+ QUERY_FLAG_IDN_FDEVICEINIT, 0, &flag_res);
if (err)
dev_err(hba->dev,
@@ -5001,7 +5002,7 @@ static int ufshcd_enable_auto_bkops(struct ufs_hba *hba)
goto out;
err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
- QUERY_FLAG_IDN_BKOPS_EN, NULL);
+ QUERY_FLAG_IDN_BKOPS_EN, 0, NULL);
if (err) {
dev_err(hba->dev, "%s: failed to enable bkops %d\n",
__func__, err);
@@ -5051,7 +5052,7 @@ static int ufshcd_disable_auto_bkops(struct ufs_hba *hba)
}
err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_CLEAR_FLAG,
- QUERY_FLAG_IDN_BKOPS_EN, NULL);
+ QUERY_FLAG_IDN_BKOPS_EN, 0, NULL);
if (err) {
dev_err(hba->dev, "%s: failed to disable bkops %d\n",
__func__, err);
@@ -5217,7 +5218,7 @@ static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable)
opcode = UPIU_QUERY_OPCODE_CLEAR_FLAG;
ret = ufshcd_query_flag_retry(hba, opcode,
- QUERY_FLAG_IDN_WB_EN, NULL);
+ QUERY_FLAG_IDN_WB_EN, 0, NULL);
if (ret) {
dev_err(hba->dev, "%s write booster %s failed %d\n",
__func__, enable ? "enable" : "disable", ret);
@@ -5241,7 +5242,7 @@ static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set)
val = UPIU_QUERY_OPCODE_CLEAR_FLAG;
return ufshcd_query_flag_retry(hba, val,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8,
+ QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8, 0,
NULL);
}
@@ -5262,7 +5263,8 @@ static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba)
return 0;
ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, NULL);
+ QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN,
+ 0, NULL);
if (ret)
dev_err(hba->dev, "%s WB - buf flush enable failed %d\n",
__func__, ret);
@@ -5281,7 +5283,7 @@ static int ufshcd_wb_buf_flush_disable(struct ufs_hba *hba)
return 0;
ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_CLEAR_FLAG,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, NULL);
+ QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, 0, NULL);
if (ret) {
dev_warn(hba->dev, "%s: WB - buf flush disable failed %d\n",
__func__, ret);
@@ -7263,7 +7265,7 @@ static int ufshcd_device_params_init(struct ufs_hba *hba)
ufshcd_get_ref_clk_gating_wait(hba);
if (!ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_READ_FLAG,
- QUERY_FLAG_IDN_PWR_ON_WPE, &flag))
+ QUERY_FLAG_IDN_PWR_ON_WPE, 0, &flag))
hba->dev_info.f_power_on_wp_en = flag;
/* Probe maximum power mode co-supported by both UFS host and device */
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index f34601121880..898883058e3a 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -948,7 +948,7 @@ int ufshcd_read_desc_param(struct ufs_hba *hba,
int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
enum attr_idn idn, u8 index, u8 selector, u32 *attr_val);
int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
- enum flag_idn idn, bool *flag_res);
+ enum flag_idn idn, u8 index, bool *flag_res);
void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support for WriteBooster
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
` (4 preceding siblings ...)
2020-05-04 14:56 ` [PATCH v6 5/8] scsi: ufs: add "index" in parameter list of ufshcd_query_flag() Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
2020-05-04 19:11 ` [EXT] " Bean Huo (beanhuo)
2020-05-04 14:56 ` [PATCH v6 7/8] scsi: ufs-mediatek: enable WriteBooster capability Stanley Chu
2020-05-04 14:56 ` [PATCH v6 8/8] scsi: ufs: cleanup WriteBooster feature Stanley Chu
7 siblings, 1 reply; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
According to UFS specification, there are two WriteBooster mode of
operations: "LU dedicated buffer" mode and "shared buffer" mode.
In the "LU dedicated buffer" mode, the WriteBooster Buffer is
dedicated to a logical unit.
If the device supports the "LU dedicated buffer" mode, this mode is
configured by setting bWriteBoosterBufferType to 00h. The logical
unit WriteBooster Buffer size is configured by setting the
dLUNumWriteBoosterBufferAllocUnits field of the related Unit
Descriptor. Only a value greater than zero enables the WriteBooster
feature in the logical unit.
Modify ufshcd_wb_probe() as above description to support LU Dedicated
buffer mode.
Note that according to UFS 3.1 specification, the valid value of
bDeviceMaxWriteBoosterLUs parameter in Geometry Descriptor is 1,
which means at most one LUN can have WriteBooster buffer in "LU
dedicated buffer mode". Therefore this patch supports only one
LUN with WriteBooster enabled. All WriteBooster related sysfs nodes
are specifically mapped to the LUN with WriteBooster enabled in
LU Dedicated buffer mode.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufs-sysfs.c | 11 +++++++-
drivers/scsi/ufs/ufs.h | 10 ++++++++
drivers/scsi/ufs/ufshcd.c | 50 ++++++++++++++++++++++++++++--------
drivers/scsi/ufs/ufshcd.h | 7 +++++
4 files changed, 66 insertions(+), 12 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index b86b6a40d7e6..a0b3763e1dc2 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -622,16 +622,25 @@ static const struct attribute_group ufs_sysfs_string_descriptors_group = {
.attrs = ufs_sysfs_string_descriptors,
};
+static inline bool ufshcd_is_wb_flags(enum flag_idn idn)
+{
+ return ((idn >= QUERY_FLAG_IDN_WB_EN) &&
+ (idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8));
+}
+
#define UFS_FLAG(_name, _uname) \
static ssize_t _name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
bool flag; \
+ u8 index = 0; \
int ret; \
struct ufs_hba *hba = dev_get_drvdata(dev); \
+ if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname)) \
+ index = ufshcd_wb_get_flag_index(hba); \
pm_runtime_get_sync(hba->dev); \
ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \
- QUERY_FLAG_IDN##_uname, 0, &flag); \
+ QUERY_FLAG_IDN##_uname, index, &flag); \
pm_runtime_put_sync(hba->dev); \
if (ret) \
return -EINVAL; \
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index daac5053b850..b3135344ab3f 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -64,6 +64,9 @@
#define UFS_MAX_LUNS (SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID)
#define UFS_UPIU_WLUN_ID (1 << 7)
+/* WriteBooster buffer is available only for the logical unit from 0 to 7 */
+#define UFS_UPIU_MAX_WB_LUN_ID 8
+
/* Well known logical unit id in LUN field of UPIU */
enum {
UFS_UPIU_REPORT_LUNS_WLUN = 0x81,
@@ -330,6 +333,12 @@ enum health_desc_param {
HEALTH_DESC_PARAM_LIFE_TIME_EST_B = 0x4,
};
+/* WriteBooster buffer mode */
+enum {
+ WB_BUF_MODE_LU_DEDICATED = 0x0,
+ WB_BUF_MODE_SHARED = 0x1,
+};
+
/*
* Logical Unit Write Protect
* 00h: LU not write protected
@@ -559,6 +568,7 @@ struct ufs_dev_info {
bool is_lu_power_on_wp;
/* Maximum number of general LU supported by the UFS device */
u8 max_lu_supported;
+ u8 wb_dedicated_lu;
u16 wmanufacturerid;
/*UFS device Product Name */
u8 *model;
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index f35304a9741a..c77c5f4de7c0 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5205,6 +5205,7 @@ static bool ufshcd_wb_sup(struct ufs_hba *hba)
static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable)
{
int ret;
+ u8 index;
enum query_opcode opcode;
if (!ufshcd_wb_sup(hba))
@@ -5217,8 +5218,9 @@ static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable)
else
opcode = UPIU_QUERY_OPCODE_CLEAR_FLAG;
+ index = ufshcd_wb_get_flag_index(hba);
ret = ufshcd_query_flag_retry(hba, opcode,
- QUERY_FLAG_IDN_WB_EN, 0, NULL);
+ QUERY_FLAG_IDN_WB_EN, index, NULL);
if (ret) {
dev_err(hba->dev, "%s write booster %s failed %d\n",
__func__, enable ? "enable" : "disable", ret);
@@ -5235,15 +5237,17 @@ static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable)
static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set)
{
int val;
+ u8 index;
if (set)
val = UPIU_QUERY_OPCODE_SET_FLAG;
else
val = UPIU_QUERY_OPCODE_CLEAR_FLAG;
+ index = ufshcd_wb_get_flag_index(hba);
return ufshcd_query_flag_retry(hba, val,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8, 0,
- NULL);
+ QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8,
+ index, NULL);
}
static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable)
@@ -5258,13 +5262,15 @@ static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable)
static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba)
{
int ret;
+ u8 index;
if (!ufshcd_wb_sup(hba) || hba->wb_buf_flush_enabled)
return 0;
+ index = ufshcd_wb_get_flag_index(hba);
ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN,
- 0, NULL);
+ index, NULL);
if (ret)
dev_err(hba->dev, "%s WB - buf flush enable failed %d\n",
__func__, ret);
@@ -5278,12 +5284,15 @@ static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba)
static int ufshcd_wb_buf_flush_disable(struct ufs_hba *hba)
{
int ret;
+ u8 index;
if (!ufshcd_wb_sup(hba) || !hba->wb_buf_flush_enabled)
return 0;
+ index = ufshcd_wb_get_flag_index(hba);
ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_CLEAR_FLAG,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, 0, NULL);
+ QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN,
+ index, NULL);
if (ret) {
dev_warn(hba->dev, "%s: WB - buf flush disable failed %d\n",
__func__, ret);
@@ -6802,6 +6811,9 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba)
static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
{
+ u8 lun;
+ u32 d_lu_wb_buf_alloc;
+
if (!ufshcd_is_wb_allowed(hba))
return;
@@ -6821,16 +6833,32 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
hba->dev_info.b_wb_buffer_type =
desc_buf[DEVICE_DESC_PARAM_WB_TYPE];
- hba->dev_info.d_wb_alloc_units =
- get_unaligned_be32(desc_buf +
- DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS);
hba->dev_info.b_presrv_uspc_en =
desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN];
- if (!(hba->dev_info.b_wb_buffer_type &&
- hba->dev_info.d_wb_alloc_units))
- goto wb_disabled;
+ if (hba->dev_info.b_wb_buffer_type == WB_BUF_MODE_SHARED) {
+ hba->dev_info.d_wb_alloc_units =
+ get_unaligned_be32(desc_buf +
+ DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS);
+ if (!hba->dev_info.d_wb_alloc_units)
+ goto wb_disabled;
+ } else {
+ for (lun = 0; lun < UFS_UPIU_MAX_WB_LUN_ID; lun++) {
+ d_lu_wb_buf_alloc = 0;
+ ufshcd_read_unit_desc_param(hba,
+ lun,
+ UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS,
+ (u8 *)&d_lu_wb_buf_alloc,
+ sizeof(d_lu_wb_buf_alloc));
+ if (d_lu_wb_buf_alloc) {
+ hba->dev_info.wb_dedicated_lu = lun;
+ break;
+ }
+ }
+ if (!d_lu_wb_buf_alloc)
+ goto wb_disabled;
+ }
return;
wb_disabled:
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 898883058e3a..f232a67fd9b3 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -861,6 +861,13 @@ static inline bool ufshcd_keep_autobkops_enabled_except_suspend(
return hba->caps & UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND;
}
+static inline u8 ufshcd_wb_get_flag_index(struct ufs_hba *hba)
+{
+ if (hba->dev_info.b_wb_buffer_type == WB_BUF_MODE_LU_DEDICATED)
+ return hba->dev_info.wb_dedicated_lu;
+ return 0;
+}
+
extern int ufshcd_runtime_suspend(struct ufs_hba *hba);
extern int ufshcd_runtime_resume(struct ufs_hba *hba);
extern int ufshcd_runtime_idle(struct ufs_hba *hba);
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread* RE: [EXT] [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support for WriteBooster
2020-05-04 14:56 ` [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support for WriteBooster Stanley Chu
@ 2020-05-04 19:11 ` Bean Huo (beanhuo)
0 siblings, 0 replies; 10+ messages in thread
From: Bean Huo (beanhuo) @ 2020-05-04 19:11 UTC (permalink / raw)
To: Stanley Chu, linux-scsi, martin.petersen, avri.altman,
alim.akhtar, jejb, asutoshd
Cc: cang, matthias.bgg, bvanassche, linux-mediatek, linux-arm-kernel,
linux-kernel, kuohong.wang, peter.wang, chun-hung.wu, andy.teng
> From: Stanley Chu <stanley.chu@mediatek.com>
> Sent: Monday, May 4, 2020 4:56 PM
> To: linux-scsi@vger.kernel.org; martin.petersen@oracle.com;
> avri.altman@wdc.com; alim.akhtar@samsung.com; jejb@linux.ibm.com;
> asutoshd@codeaurora.org
> Cc: Bean Huo (beanhuo) <beanhuo@micron.com>; cang@codeaurora.org;
> matthias.bgg@gmail.com; bvanassche@acm.org; linux-
> mediatek@lists.infradead.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; kuohong.wang@mediatek.com;
> peter.wang@mediatek.com; chun-hung.wu@mediatek.com;
> andy.teng@mediatek.com; Stanley Chu <stanley.chu@mediatek.com>
> Subject: [EXT] [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support
> for WriteBooster
>
> According to UFS specification, there are two WriteBooster mode of
> operations: "LU dedicated buffer" mode and "shared buffer" mode.
> In the "LU dedicated buffer" mode, the WriteBooster Buffer is dedicated to a
> logical unit.
>
> If the device supports the "LU dedicated buffer" mode, this mode is configured
> by setting bWriteBoosterBufferType to 00h. The logical unit WriteBooster Buffer
> size is configured by setting the dLUNumWriteBoosterBufferAllocUnits field of
> the related Unit Descriptor. Only a value greater than zero enables the
> WriteBooster feature in the logical unit.
>
> Modify ufshcd_wb_probe() as above description to support LU Dedicated buffer
> mode.
>
> Note that according to UFS 3.1 specification, the valid value of
> bDeviceMaxWriteBoosterLUs parameter in Geometry Descriptor is 1, which
> means at most one LUN can have WriteBooster buffer in "LU dedicated buffer
> mode". Therefore this patch supports only one LUN with WriteBooster enabled.
> All WriteBooster related sysfs nodes are specifically mapped to the LUN with
> WriteBooster enabled in LU Dedicated buffer mode.
>
> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
> Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH v6 7/8] scsi: ufs-mediatek: enable WriteBooster capability
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
` (5 preceding siblings ...)
2020-05-04 14:56 ` [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support for WriteBooster Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
2020-05-04 14:56 ` [PATCH v6 8/8] scsi: ufs: cleanup WriteBooster feature Stanley Chu
7 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
Enable WriteBooster capability on MediaTek UFS platforms.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index ce7ba529e613..d503a9d82854 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -269,6 +269,9 @@ static int ufs_mtk_init(struct ufs_hba *hba)
/* Enable clock-gating */
hba->caps |= UFSHCD_CAP_CLK_GATING;
+ /* Enable WriteBooster */
+ hba->caps |= UFSHCD_CAP_WB_EN;
+
/*
* ufshcd_vops_init() is invoked after
* ufshcd_setup_clock(true) in ufshcd_hba_init() thus
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v6 8/8] scsi: ufs: cleanup WriteBooster feature
2020-05-04 14:56 [PATCH v6 0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster Stanley Chu
` (6 preceding siblings ...)
2020-05-04 14:56 ` [PATCH v6 7/8] scsi: ufs-mediatek: enable WriteBooster capability Stanley Chu
@ 2020-05-04 14:56 ` Stanley Chu
7 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-04 14:56 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb, asutoshd
Cc: beanhuo, cang, matthias.bgg, bvanassche, linux-mediatek,
linux-arm-kernel, linux-kernel, kuohong.wang, peter.wang,
chun-hung.wu, andy.teng, Stanley Chu
Small cleanup as below items,
1. Use ufshcd_is_wb_allowed() directly instead of ufshcd_wb_sup()
since ufshcd_wb_sup() just returns the result of
ufshcd_is_wb_allowed().
2. In ufshcd_suspend(), "else if (!ufshcd_is_runtime_pm(pm_op))
can be simplified to "else" since both have the same meaning.
This patch does not change any functionality.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufshcd.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index c77c5f4de7c0..10e64f5efa06 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -253,7 +253,6 @@ static int ufshcd_scale_clks(struct ufs_hba *hba, bool scale_up);
static irqreturn_t ufshcd_intr(int irq, void *__hba);
static int ufshcd_change_power_mode(struct ufs_hba *hba,
struct ufs_pa_layer_attr *pwr_mode);
-static bool ufshcd_wb_sup(struct ufs_hba *hba);
static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba);
static int ufshcd_wb_buf_flush_disable(struct ufs_hba *hba);
static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable);
@@ -285,7 +284,7 @@ static inline void ufshcd_wb_config(struct ufs_hba *hba)
{
int ret;
- if (!ufshcd_wb_sup(hba))
+ if (!ufshcd_is_wb_allowed(hba))
return;
ret = ufshcd_wb_ctrl(hba, true);
@@ -5197,18 +5196,13 @@ static void ufshcd_bkops_exception_event_handler(struct ufs_hba *hba)
__func__, err);
}
-static bool ufshcd_wb_sup(struct ufs_hba *hba)
-{
- return ufshcd_is_wb_allowed(hba);
-}
-
static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable)
{
int ret;
u8 index;
enum query_opcode opcode;
- if (!ufshcd_wb_sup(hba))
+ if (!ufshcd_is_wb_allowed(hba))
return 0;
if (!(enable ^ hba->wb_enabled))
@@ -5264,7 +5258,7 @@ static int ufshcd_wb_buf_flush_enable(struct ufs_hba *hba)
int ret;
u8 index;
- if (!ufshcd_wb_sup(hba) || hba->wb_buf_flush_enabled)
+ if (!ufshcd_is_wb_allowed(hba) || hba->wb_buf_flush_enabled)
return 0;
index = ufshcd_wb_get_flag_index(hba);
@@ -5286,7 +5280,7 @@ static int ufshcd_wb_buf_flush_disable(struct ufs_hba *hba)
int ret;
u8 index;
- if (!ufshcd_wb_sup(hba) || !hba->wb_buf_flush_enabled)
+ if (!ufshcd_is_wb_allowed(hba) || !hba->wb_buf_flush_enabled)
return 0;
index = ufshcd_wb_get_flag_index(hba);
@@ -5336,7 +5330,7 @@ static bool ufshcd_wb_keep_vcc_on(struct ufs_hba *hba)
int ret;
u32 avail_buf;
- if (!ufshcd_wb_sup(hba))
+ if (!ufshcd_is_wb_allowed(hba))
return false;
/*
* The ufs device needs the vcc to be ON to flush.
@@ -8221,12 +8215,12 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
* configured WB type is 70% full, keep vcc ON
* for the device to flush the wb buffer
*/
- if ((hba->auto_bkops_enabled && ufshcd_wb_sup(hba)) ||
+ if ((hba->auto_bkops_enabled && ufshcd_is_wb_allowed(hba)) ||
ufshcd_wb_keep_vcc_on(hba))
hba->dev_info.keep_vcc_on = true;
else
hba->dev_info.keep_vcc_on = false;
- } else if (!ufshcd_is_runtime_pm(pm_op)) {
+ } else {
hba->dev_info.keep_vcc_on = false;
}
--
2.18.0
^ permalink raw reply related [flat|nested] 10+ messages in thread