* [RESENT PATCH v5 1/5] scsi: ufs: remove max_t in ufs_get_device_desc
2020-06-03 9:19 [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Bean Huo
@ 2020-06-03 9:19 ` Bean Huo
2020-06-03 9:19 ` [RESENT PATCH v5 2/5] scsi: ufs: delete ufshcd_read_desc() Bean Huo
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Bean Huo @ 2020-06-03 9:19 UTC (permalink / raw)
To: alim.akhtar, avri.altman, asutoshd, jejb, martin.petersen,
stanley.chu, beanhuo, bvanassche, tomas.winkler, cang
Cc: linux-scsi, linux-kernel, beanhuo
From: Bean Huo <beanhuo@micron.com>
For the UFS device, the maximum descriptor size is 255, max_t called
in ufs_get_device_desc() is useless.
Signed-off-by: Bart van Assche <bvanassche@acm.org>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index ad4fc829cbb2..2cf077ab9dfd 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6903,14 +6903,11 @@ static void ufs_fixup_device_setup(struct ufs_hba *hba)
static int ufs_get_device_desc(struct ufs_hba *hba)
{
int err;
- size_t buff_len;
u8 model_index;
u8 *desc_buf;
struct ufs_dev_info *dev_info = &hba->dev_info;
- buff_len = max_t(size_t, hba->desc_size.dev_desc,
- QUERY_DESC_MAX_SIZE + 1);
- desc_buf = kmalloc(buff_len, GFP_KERNEL);
+ desc_buf = kmalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL);
if (!desc_buf) {
err = -ENOMEM;
goto out;
--
2.17.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [RESENT PATCH v5 2/5] scsi: ufs: delete ufshcd_read_desc()
2020-06-03 9:19 [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Bean Huo
2020-06-03 9:19 ` [RESENT PATCH v5 1/5] scsi: ufs: remove max_t in ufs_get_device_desc Bean Huo
@ 2020-06-03 9:19 ` Bean Huo
2020-06-03 9:19 ` [RESENT PATCH v5 3/5] scsi: ufs: fix potential access NULL pointer while memcpy Bean Huo
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Bean Huo @ 2020-06-03 9:19 UTC (permalink / raw)
To: alim.akhtar, avri.altman, asutoshd, jejb, martin.petersen,
stanley.chu, beanhuo, bvanassche, tomas.winkler, cang
Cc: linux-scsi, linux-kernel, beanhuo
From: Bean Huo <beanhuo@micron.com>
Delete ufshcd_read_desc(). Instead, let caller directly call
ufshcd_read_desc_param().
Signed-off-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 27 ++++++++-------------------
1 file changed, 8 insertions(+), 19 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 2cf077ab9dfd..c18c2aadbe14 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3221,16 +3221,6 @@ int ufshcd_read_desc_param(struct ufs_hba *hba,
return ret;
}
-static inline int ufshcd_read_desc(struct ufs_hba *hba,
- enum desc_idn desc_id,
- int desc_index,
- void *buf,
- u32 size)
-{
- return ufshcd_read_desc_param(hba, desc_id, desc_index, 0, buf, size);
-}
-
-
/**
* struct uc_string_id - unicode string
*
@@ -3278,9 +3268,8 @@ int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
if (!uc_str)
return -ENOMEM;
- ret = ufshcd_read_desc(hba, QUERY_DESC_IDN_STRING,
- desc_index, uc_str,
- QUERY_DESC_MAX_SIZE);
+ ret = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_STRING, desc_index, 0,
+ (u8 *)uc_str, QUERY_DESC_MAX_SIZE);
if (ret < 0) {
dev_err(hba->dev, "Reading String Desc failed after %d retries. err = %d\n",
QUERY_REQ_RETRIES, ret);
@@ -6711,8 +6700,8 @@ static void ufshcd_set_active_icc_lvl(struct ufs_hba *hba)
if (!desc_buf)
return;
- ret = ufshcd_read_desc(hba, QUERY_DESC_IDN_POWER, 0,
- desc_buf, buff_len);
+ ret = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, 0,
+ desc_buf, buff_len);
if (ret) {
dev_err(hba->dev,
"%s: Failed reading power descriptor.len = %d ret = %d",
@@ -6913,8 +6902,8 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
goto out;
}
- err = ufshcd_read_desc(hba, QUERY_DESC_IDN_DEVICE, 0, desc_buf,
- hba->desc_size.dev_desc);
+ err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_DEVICE, 0, 0, desc_buf,
+ hba->desc_size.dev_desc);
if (err) {
dev_err(hba->dev, "%s: Failed reading Device Desc. err = %d\n",
__func__, err);
@@ -7196,8 +7185,8 @@ static int ufshcd_device_geo_params_init(struct ufs_hba *hba)
goto out;
}
- err = ufshcd_read_desc(hba, QUERY_DESC_IDN_GEOMETRY, 0,
- desc_buf, buff_len);
+ err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_GEOMETRY, 0, 0,
+ desc_buf, buff_len);
if (err) {
dev_err(hba->dev, "%s: Failed reading Geometry Desc. err = %d\n",
__func__, err);
--
2.17.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [RESENT PATCH v5 3/5] scsi: ufs: fix potential access NULL pointer while memcpy
2020-06-03 9:19 [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Bean Huo
2020-06-03 9:19 ` [RESENT PATCH v5 1/5] scsi: ufs: remove max_t in ufs_get_device_desc Bean Huo
2020-06-03 9:19 ` [RESENT PATCH v5 2/5] scsi: ufs: delete ufshcd_read_desc() Bean Huo
@ 2020-06-03 9:19 ` Bean Huo
2020-06-03 9:19 ` [RESENT PATCH v5 4/5] scsi: ufs: cleanup ufs initialization path Bean Huo
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Bean Huo @ 2020-06-03 9:19 UTC (permalink / raw)
To: alim.akhtar, avri.altman, asutoshd, jejb, martin.petersen,
stanley.chu, beanhuo, bvanassche, tomas.winkler, cang
Cc: linux-scsi, linux-kernel, beanhuo
From: Bean Huo <beanhuo@micron.com>
If param_offset is not 0, the memcpy length shouldn't be the
true descriptor length.
Signed-off-by: Bean Huo <beanhuo@micron.com>
---
drivers/scsi/ufs/ufshcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index c18c2aadbe14..7163b268ed0b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3210,8 +3210,8 @@ int ufshcd_read_desc_param(struct ufs_hba *hba,
}
/* Check wherher we will not copy more data, than available */
- if (is_kmalloc && param_size > buff_len)
- param_size = buff_len;
+ if (is_kmalloc && (param_offset + param_size) > buff_len)
+ param_size = buff_len - param_offset;
if (is_kmalloc)
memcpy(param_read_buf, &desc_buf[param_offset], param_size);
--
2.17.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [RESENT PATCH v5 4/5] scsi: ufs: cleanup ufs initialization path
2020-06-03 9:19 [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Bean Huo
` (2 preceding siblings ...)
2020-06-03 9:19 ` [RESENT PATCH v5 3/5] scsi: ufs: fix potential access NULL pointer while memcpy Bean Huo
@ 2020-06-03 9:19 ` Bean Huo
2020-06-03 9:19 ` [RESENT PATCH v5 5/5] scsi: ufs: add compatibility with 3.1 UFS unit descriptor length Bean Huo
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Bean Huo @ 2020-06-03 9:19 UTC (permalink / raw)
To: alim.akhtar, avri.altman, asutoshd, jejb, martin.petersen,
stanley.chu, beanhuo, bvanassche, tomas.winkler, cang
Cc: linux-scsi, linux-kernel, beanhuo
From: Bean Huo <beanhuo@micron.com>
At UFS initialization stage, to get the length of the descriptor,
ufshcd_read_desc_length() being called 6 times. Instead, we will
capture the descriptor size the first time we'll read it.
Delete unnecessary redundant code, remove ufshcd_read_desc_length(),
ufshcd_init_desc_sizes(), and boost UFS initialization.
Signed-off-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs.h | 10 ---
drivers/scsi/ufs/ufs_bsg.c | 5 +-
drivers/scsi/ufs/ufshcd.c | 168 ++++++++-----------------------------
drivers/scsi/ufs/ufshcd.h | 16 +---
4 files changed, 38 insertions(+), 161 deletions(-)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index c70845d41449..8770255b5dc0 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -200,16 +200,6 @@ enum desc_header_offset {
QUERY_DESC_DESC_TYPE_OFFSET = 0x01,
};
-enum ufs_desc_def_size {
- QUERY_DESC_DEVICE_DEF_SIZE = 0x59,
- QUERY_DESC_CONFIGURATION_DEF_SIZE = 0x90,
- QUERY_DESC_UNIT_DEF_SIZE = 0x2D,
- QUERY_DESC_INTERCONNECT_DEF_SIZE = 0x06,
- QUERY_DESC_GEOMETRY_DEF_SIZE = 0x48,
- QUERY_DESC_POWER_DEF_SIZE = 0x62,
- QUERY_DESC_HEALTH_DEF_SIZE = 0x25,
-};
-
/* Unit descriptor parameters offsets in bytes*/
enum unit_desc_param {
UNIT_DESC_PARAM_LEN = 0x0,
diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/scsi/ufs/ufs_bsg.c
index 53dd87628cbe..27f54615ee84 100644
--- a/drivers/scsi/ufs/ufs_bsg.c
+++ b/drivers/scsi/ufs/ufs_bsg.c
@@ -11,13 +11,12 @@ static int ufs_bsg_get_query_desc_size(struct ufs_hba *hba, int *desc_len,
{
int desc_size = be16_to_cpu(qr->length);
int desc_id = qr->idn;
- int ret;
if (desc_size <= 0)
return -EINVAL;
- ret = ufshcd_map_desc_id_to_length(hba, desc_id, desc_len);
- if (ret || !*desc_len)
+ ufshcd_map_desc_id_to_length(hba, desc_id, desc_len);
+ if (!*desc_len)
return -EINVAL;
*desc_len = min_t(int, *desc_len, desc_size);
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 7163b268ed0b..5ad0eebccc98 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3052,95 +3052,32 @@ int ufshcd_query_descriptor_retry(struct ufs_hba *hba,
return err;
}
-/**
- * ufshcd_read_desc_length - read the specified descriptor length from header
- * @hba: Pointer to adapter instance
- * @desc_id: descriptor idn value
- * @desc_index: descriptor index
- * @desc_length: pointer to variable to read the length of descriptor
- *
- * Return 0 in case of success, non-zero otherwise
- */
-static int ufshcd_read_desc_length(struct ufs_hba *hba,
- enum desc_idn desc_id,
- int desc_index,
- int *desc_length)
-{
- int ret;
- u8 header[QUERY_DESC_HDR_SIZE];
- int header_len = QUERY_DESC_HDR_SIZE;
-
- if (desc_id >= QUERY_DESC_IDN_MAX)
- return -EINVAL;
-
- ret = ufshcd_query_descriptor_retry(hba, UPIU_QUERY_OPCODE_READ_DESC,
- desc_id, desc_index, 0, header,
- &header_len);
-
- if (ret) {
- dev_err(hba->dev, "%s: Failed to get descriptor header id %d",
- __func__, desc_id);
- return ret;
- } else if (desc_id != header[QUERY_DESC_DESC_TYPE_OFFSET]) {
- dev_warn(hba->dev, "%s: descriptor header id %d and desc_id %d mismatch",
- __func__, header[QUERY_DESC_DESC_TYPE_OFFSET],
- desc_id);
- ret = -EINVAL;
- }
-
- *desc_length = header[QUERY_DESC_LENGTH_OFFSET];
- return ret;
-
-}
-
/**
* ufshcd_map_desc_id_to_length - map descriptor IDN to its length
* @hba: Pointer to adapter instance
* @desc_id: descriptor idn value
* @desc_len: mapped desc length (out)
- *
- * Return 0 in case of success, non-zero otherwise
*/
-int ufshcd_map_desc_id_to_length(struct ufs_hba *hba,
- enum desc_idn desc_id, int *desc_len)
+void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
+ int *desc_len)
{
- switch (desc_id) {
- case QUERY_DESC_IDN_DEVICE:
- *desc_len = hba->desc_size.dev_desc;
- break;
- case QUERY_DESC_IDN_POWER:
- *desc_len = hba->desc_size.pwr_desc;
- break;
- case QUERY_DESC_IDN_GEOMETRY:
- *desc_len = hba->desc_size.geom_desc;
- break;
- case QUERY_DESC_IDN_CONFIGURATION:
- *desc_len = hba->desc_size.conf_desc;
- break;
- case QUERY_DESC_IDN_UNIT:
- *desc_len = hba->desc_size.unit_desc;
- break;
- case QUERY_DESC_IDN_INTERCONNECT:
- *desc_len = hba->desc_size.interc_desc;
- break;
- case QUERY_DESC_IDN_STRING:
- *desc_len = QUERY_DESC_MAX_SIZE;
- break;
- case QUERY_DESC_IDN_HEALTH:
- *desc_len = hba->desc_size.hlth_desc;
- break;
- case QUERY_DESC_IDN_RFU_0:
- case QUERY_DESC_IDN_RFU_1:
- *desc_len = 0;
- break;
- default:
+ if (desc_id >= QUERY_DESC_IDN_MAX || desc_id == QUERY_DESC_IDN_RFU_0 ||
+ desc_id == QUERY_DESC_IDN_RFU_1)
*desc_len = 0;
- return -EINVAL;
- }
- return 0;
+ else
+ *desc_len = hba->desc_size[desc_id];
}
EXPORT_SYMBOL(ufshcd_map_desc_id_to_length);
+static void ufshcd_update_desc_length(struct ufs_hba *hba,
+ enum desc_idn desc_id,
+ unsigned char desc_len)
+{
+ if (hba->desc_size[desc_id] == QUERY_DESC_MAX_SIZE &&
+ desc_id != QUERY_DESC_IDN_STRING)
+ hba->desc_size[desc_id] = desc_len;
+}
+
/**
* ufshcd_read_desc_param - read the specified descriptor parameter
* @hba: Pointer to adapter instance
@@ -3168,16 +3105,11 @@ int ufshcd_read_desc_param(struct ufs_hba *hba,
if (desc_id >= QUERY_DESC_IDN_MAX || !param_size)
return -EINVAL;
- /* Get the max length of descriptor from structure filled up at probe
- * time.
- */
- ret = ufshcd_map_desc_id_to_length(hba, desc_id, &buff_len);
-
- /* Sanity checks */
- if (ret || !buff_len) {
- dev_err(hba->dev, "%s: Failed to get full descriptor length",
- __func__);
- return ret;
+ /* Get the length of descriptor */
+ ufshcd_map_desc_id_to_length(hba, desc_id, &buff_len);
+ if (!buff_len) {
+ dev_err(hba->dev, "%s: Failed to get desc length", __func__);
+ return -EINVAL;
}
/* Check whether we need temp memory */
@@ -3209,6 +3141,10 @@ int ufshcd_read_desc_param(struct ufs_hba *hba,
goto out;
}
+ /* Update descriptor length */
+ buff_len = desc_buf[QUERY_DESC_LENGTH_OFFSET];
+ ufshcd_update_desc_length(hba, desc_id, buff_len);
+
/* Check wherher we will not copy more data, than available */
if (is_kmalloc && (param_offset + param_size) > buff_len)
param_size = buff_len - param_offset;
@@ -6692,7 +6628,7 @@ static u32 ufshcd_find_max_sup_active_icc_level(struct ufs_hba *hba,
static void ufshcd_set_active_icc_lvl(struct ufs_hba *hba)
{
int ret;
- int buff_len = hba->desc_size.pwr_desc;
+ int buff_len = hba->desc_size[QUERY_DESC_IDN_POWER];
u8 *desc_buf;
u32 icc_level;
@@ -6810,7 +6746,8 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
if (!ufshcd_is_wb_allowed(hba))
return;
- if (hba->desc_size.dev_desc < DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4)
+ if (hba->desc_size[QUERY_DESC_IDN_DEVICE] <
+ DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4)
goto wb_disabled;
hba->dev_info.d_ext_ufs_feature_sup =
@@ -6903,7 +6840,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
}
err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_DEVICE, 0, 0, desc_buf,
- hba->desc_size.dev_desc);
+ hba->desc_size[QUERY_DESC_IDN_DEVICE]);
if (err) {
dev_err(hba->dev, "%s: Failed reading Device Desc. err = %d\n",
__func__, err);
@@ -7132,53 +7069,13 @@ static void ufshcd_clear_dbg_ufs_stats(struct ufs_hba *hba)
hba->req_abort_count = 0;
}
-static void ufshcd_init_desc_sizes(struct ufs_hba *hba)
-{
- int err;
-
- err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_DEVICE, 0,
- &hba->desc_size.dev_desc);
- if (err)
- hba->desc_size.dev_desc = QUERY_DESC_DEVICE_DEF_SIZE;
-
- err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_POWER, 0,
- &hba->desc_size.pwr_desc);
- if (err)
- hba->desc_size.pwr_desc = QUERY_DESC_POWER_DEF_SIZE;
-
- err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_INTERCONNECT, 0,
- &hba->desc_size.interc_desc);
- if (err)
- hba->desc_size.interc_desc = QUERY_DESC_INTERCONNECT_DEF_SIZE;
-
- err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_CONFIGURATION, 0,
- &hba->desc_size.conf_desc);
- if (err)
- hba->desc_size.conf_desc = QUERY_DESC_CONFIGURATION_DEF_SIZE;
-
- err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_UNIT, 0,
- &hba->desc_size.unit_desc);
- if (err)
- hba->desc_size.unit_desc = QUERY_DESC_UNIT_DEF_SIZE;
-
- err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_GEOMETRY, 0,
- &hba->desc_size.geom_desc);
- if (err)
- hba->desc_size.geom_desc = QUERY_DESC_GEOMETRY_DEF_SIZE;
-
- err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_HEALTH, 0,
- &hba->desc_size.hlth_desc);
- if (err)
- hba->desc_size.hlth_desc = QUERY_DESC_HEALTH_DEF_SIZE;
-}
-
static int ufshcd_device_geo_params_init(struct ufs_hba *hba)
{
int err;
size_t buff_len;
u8 *desc_buf;
- buff_len = hba->desc_size.geom_desc;
+ buff_len = hba->desc_size[QUERY_DESC_IDN_GEOMETRY];
desc_buf = kmalloc(buff_len, GFP_KERNEL);
if (!desc_buf) {
err = -ENOMEM;
@@ -7274,10 +7171,11 @@ static int ufshcd_set_dev_ref_clk(struct ufs_hba *hba)
static int ufshcd_device_params_init(struct ufs_hba *hba)
{
bool flag;
- int ret;
+ int ret, i;
- /* Init check for device descriptor sizes */
- ufshcd_init_desc_sizes(hba);
+ /* Init device descriptor sizes */
+ for (i = 0; i < QUERY_DESC_IDN_MAX; i++)
+ hba->desc_size[i] = QUERY_DESC_MAX_SIZE;
/* Init UFS geometry descriptor related parameters */
ret = ufshcd_device_geo_params_init(hba);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index bf97d616e597..2b62869fa459 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -236,16 +236,6 @@ struct ufs_dev_cmd {
struct ufs_query query;
};
-struct ufs_desc_size {
- int dev_desc;
- int pwr_desc;
- int geom_desc;
- int interc_desc;
- int unit_desc;
- int conf_desc;
- int hlth_desc;
-};
-
/**
* struct ufs_clk_info - UFS clock related info
* @list: list headed by hba->clk_list_head
@@ -738,7 +728,7 @@ struct ufs_hba {
bool is_urgent_bkops_lvl_checked;
struct rw_semaphore clk_scaling_lock;
- struct ufs_desc_size desc_size;
+ unsigned char desc_size[QUERY_DESC_IDN_MAX];
atomic_t scsi_block_reqs_cnt;
struct device bsg_dev;
@@ -976,8 +966,8 @@ int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
int ufshcd_hold(struct ufs_hba *hba, bool async);
void ufshcd_release(struct ufs_hba *hba);
-int ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
- int *desc_length);
+void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
+ int *desc_length);
u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba);
--
2.17.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [RESENT PATCH v5 5/5] scsi: ufs: add compatibility with 3.1 UFS unit descriptor length
2020-06-03 9:19 [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Bean Huo
` (3 preceding siblings ...)
2020-06-03 9:19 ` [RESENT PATCH v5 4/5] scsi: ufs: cleanup ufs initialization path Bean Huo
@ 2020-06-03 9:19 ` Bean Huo
2020-06-03 10:33 ` [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Avri Altman
2020-06-16 3:59 ` Martin K. Petersen
6 siblings, 0 replies; 8+ messages in thread
From: Bean Huo @ 2020-06-03 9:19 UTC (permalink / raw)
To: alim.akhtar, avri.altman, asutoshd, jejb, martin.petersen,
stanley.chu, beanhuo, bvanassche, tomas.winkler, cang
Cc: linux-scsi, linux-kernel, beanhuo
From: Bean Huo <beanhuo@micron.com>
For UFS 3.1, the normal unit descriptor is 10 bytes larger
than the RPMB unit, however, both descriptors share the same
desc_idn, to cover both unit descriptors with one length, we
choose the normal unit descriptor length by desc_index.
Signed-off-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufs.h | 1 +
drivers/scsi/ufs/ufshcd.c | 11 ++++++++---
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 8770255b5dc0..250e1a905a14 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -63,6 +63,7 @@
#define UFS_UPIU_MAX_UNIT_NUM_ID 0x7F
#define UFS_MAX_LUNS (SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID)
#define UFS_UPIU_WLUN_ID (1 << 7)
+#define UFS_RPMB_UNIT 0xC4
/* WriteBooster buffer is available only for the logical unit from 0 to 7 */
#define UFS_UPIU_MAX_WB_LUN_ID 8
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 5ad0eebccc98..f283b9eb97ac 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3070,11 +3070,16 @@ void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
EXPORT_SYMBOL(ufshcd_map_desc_id_to_length);
static void ufshcd_update_desc_length(struct ufs_hba *hba,
- enum desc_idn desc_id,
+ enum desc_idn desc_id, int desc_index,
unsigned char desc_len)
{
if (hba->desc_size[desc_id] == QUERY_DESC_MAX_SIZE &&
- desc_id != QUERY_DESC_IDN_STRING)
+ desc_id != QUERY_DESC_IDN_STRING && desc_index != UFS_RPMB_UNIT)
+ /* For UFS 3.1, the normal unit descriptor is 10 bytes larger
+ * than the RPMB unit, however, both descriptors share the same
+ * desc_idn, to cover both unit descriptors with one length, we
+ * choose the normal unit descriptor length by desc_index.
+ */
hba->desc_size[desc_id] = desc_len;
}
@@ -3143,7 +3148,7 @@ int ufshcd_read_desc_param(struct ufs_hba *hba,
/* Update descriptor length */
buff_len = desc_buf[QUERY_DESC_LENGTH_OFFSET];
- ufshcd_update_desc_length(hba, desc_id, buff_len);
+ ufshcd_update_desc_length(hba, desc_id, desc_index, buff_len);
/* Check wherher we will not copy more data, than available */
if (is_kmalloc && (param_offset + param_size) > buff_len)
--
2.17.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* RE: [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization
2020-06-03 9:19 [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Bean Huo
` (4 preceding siblings ...)
2020-06-03 9:19 ` [RESENT PATCH v5 5/5] scsi: ufs: add compatibility with 3.1 UFS unit descriptor length Bean Huo
@ 2020-06-03 10:33 ` Avri Altman
2020-06-16 3:59 ` Martin K. Petersen
6 siblings, 0 replies; 8+ messages in thread
From: Avri Altman @ 2020-06-03 10:33 UTC (permalink / raw)
To: Bean Huo, alim.akhtar, asutoshd, jejb, martin.petersen,
stanley.chu, beanhuo, bvanassche, tomas.winkler, cang
Cc: linux-scsi, linux-kernel, beanhuo
Looks fine to me.
Thanks,
Avri
>
> From: Bean Huo <beanhuo@micron.com>
>
> Resent this patchset since linux-scsi@vger.kernel.org and
> linux-kernel@vger.kernel.org rejected my email
>
>
> Cleanup UFS descriptor length initialization, and delete some unnecessary
> code.
>
> Changelog:
> v4 - v5:
> 1. Rebased patch
> 2. In the patch 3/5, change "param_size > buff_len" to
> "(param_offset + param_size) > buff_len"
>
> v3 - v4:
> 1. add desc_id >= QUERY_DESC_IDN_MAX check in patch 4/5 (Avri Altman)
> 2. update buff_len to hold the true descriptor size in 4/5 (Avri Altman)
> 3. add new patch 3/5
>
> v2 - v3:
> 1. Fix typo in the commit message (Avri Altman & Bart van Assche)
> 2. Delete ufshcd_init_desc_sizes() in patch 3/4 (Stanley Chu)
> 3. Remove max_t() and buff_len in patch 1/4 (Bart van Assche)
> 4. Add patch 4/4 to compatable with 3.1 UFS unit descriptor length
>
> v1 - v2:
> 1. split patch
> 2. fix one compiling WARNING (Reported-by: kbuild test robot
> <lkp@intel.com>)
>
> Bart van Assche (1):
> scsi: ufs: remove max_t in ufs_get_device_desc
>
> Bean Huo (4):
> scsi: ufs: delete ufshcd_read_desc()
> scsi: ufs: fix potential access NULL pointer while memcpy
> scsi: ufs: cleanup ufs initialization path
> scsi: ufs: add compatibility with 3.1 UFS unit descriptor length
>
> drivers/scsi/ufs/ufs.h | 11 +-
> drivers/scsi/ufs/ufs_bsg.c | 5 +-
> drivers/scsi/ufs/ufshcd.c | 207 +++++++++----------------------------
> drivers/scsi/ufs/ufshcd.h | 16 +--
> 4 files changed, 54 insertions(+), 185 deletions(-)
>
> --
> 2.17.1
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization
2020-06-03 9:19 [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Bean Huo
` (5 preceding siblings ...)
2020-06-03 10:33 ` [RESENT PATCH v5 0/5] scsi: ufs: cleanup ufs initialization Avri Altman
@ 2020-06-16 3:59 ` Martin K. Petersen
6 siblings, 0 replies; 8+ messages in thread
From: Martin K. Petersen @ 2020-06-16 3:59 UTC (permalink / raw)
To: beanhuo, stanley.chu, jejb, cang, bvanassche, asutoshd,
avri.altman, tomas.winkler, Bean Huo, alim.akhtar
Cc: Martin K . Petersen, linux-scsi, beanhuo, linux-kernel
On Wed, 3 Jun 2020 11:19:54 +0200, Bean Huo wrote:
> Resent this patchset since linux-scsi@vger.kernel.org and
> linux-kernel@vger.kernel.org rejected my email
>
>
> Cleanup UFS descriptor length initialization, and delete some unnecessary code.
>
> Changelog:
> v4 - v5:
> 1. Rebased patch
> 2. In the patch 3/5, change "param_size > buff_len" to
> "(param_offset + param_size) > buff_len"
>
> [...]
Applied to 5.9/scsi-queue, thanks!
[1/5] scsi: ufs: Remove max_t in ufs_get_device_desc
https://git.kernel.org/mkp/scsi/c/458a45f5262b
[2/5] scsi: ufs: Delete ufshcd_read_desc()
https://git.kernel.org/mkp/scsi/c/c4607a09450d
[3/5] scsi: ufs: Fix potential NULL pointer access during memcpy
https://git.kernel.org/mkp/scsi/c/cbe193f6f093
[4/5] scsi: ufs: Clean up ufs initialization path
https://git.kernel.org/mkp/scsi/c/7a0bf85b5e18
[5/5] scsi: ufs: Add compatibility with 3.1 UFS unit descriptor length
https://git.kernel.org/mkp/scsi/c/72fb690eece1
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 8+ messages in thread