Fix many warnings with incorrect endian assumptions
which makes the code unportable to new architectures.
The UFS specification defines the byte order as big-endian
for UPIU structure and little-endian for the host controller
transfer/task management descriptors.
Signed-off-by: Sujit Reddy Thumma <sthumma@xxxxxxxxxxxxxx>
---
drivers/scsi/ufs/ufs.h | 36 ++++++++++++++++++------------------
drivers/scsi/ufs/ufshcd.c | 42 ++++++++----------------------------------
drivers/scsi/ufs/ufshci.h | 32 ++++++++++++++++----------------
3 files changed, 42 insertions(+), 68 deletions(-)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 7210500..f42d1ce 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -196,9 +196,9 @@ enum {
* @dword_2: UPIU header DW-2
*/
struct utp_upiu_header {
- u32 dword_0;
- u32 dword_1;
- u32 dword_2;
+ __be32 dword_0;
+ __be32 dword_1;
+ __be32 dword_2;
};
/**
@@ -207,7 +207,7 @@ struct utp_upiu_header {
* @cdb: Command Descriptor Block CDB DW-4 to DW-7
*/
struct utp_upiu_cmd {
- u32 exp_data_transfer_len;
+ __be32 exp_data_transfer_len;
u8 cdb[MAX_CDB_SIZE];
};
@@ -228,10 +228,10 @@ struct utp_upiu_query {
u8 idn;
u8 index;
u8 selector;
- u16 reserved_osf;
- u16 length;
- u32 value;
- u32 reserved[2];
+ __be16 reserved_osf;
+ __be16 length;
+ __be32 value;
+ __be32 reserved[2];
};
/**
@@ -256,9 +256,9 @@ struct utp_upiu_req {
* @sense_data: Sense data field DW-8 to DW-12
*/
struct utp_cmd_rsp {
- u32 residual_transfer_count;
- u32 reserved[4];
- u16 sense_data_len;
+ __be32 residual_transfer_count;
+ __be32 reserved[4];
+ __be16 sense_data_len;
u8 sense_data[18];
};
@@ -286,10 +286,10 @@ struct utp_upiu_rsp {
*/
struct utp_upiu_task_req {
struct utp_upiu_header header;
- u32 input_param1;
- u32 input_param2;
- u32 input_param3;
- u32 reserved[2];
+ __be32 input_param1;
+ __be32 input_param2;
+ __be32 input_param3;
+ __be32 reserved[2];
};
/**
@@ -301,9 +301,9 @@ struct utp_upiu_task_req {
*/
struct utp_upiu_task_rsp {
struct utp_upiu_header header;
- u32 output_param1;
- u32 output_param2;
- u32 reserved[3];
+ __be32 output_param1;
+ __be32 output_param2;
+ __be32 reserved[3];
};
/**
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 04884d6..064c9d9 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -163,7 +163,7 @@ static inline int ufshcd_is_device_present(u32 reg_hcs)
*/
static inline int ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp)
{
- return lrbp->utr_descriptor_ptr->header.dword_2 & MASK_OCS;
+ return le32_to_cpu(lrbp->utr_descriptor_ptr->header.dword_2) & MASK_OCS;
}
/**
@@ -176,7 +176,7 @@ static inline int ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp)
static inline int
ufshcd_get_tmr_ocs(struct utp_task_req_desc *task_req_descp)
{
- return task_req_descp->header.dword_2 & MASK_OCS;
+ return le32_to_cpu(task_req_descp->header.dword_2) & MASK_OCS;
}
/**
@@ -390,26 +390,6 @@ static inline void ufshcd_copy_sense_data(struct ufshcd_lrb *lrbp)
}
/**
- * ufshcd_query_to_cpu() - formats the buffer to native cpu endian
- * @response: upiu query response to convert
- */
-static inline void ufshcd_query_to_cpu(struct utp_upiu_query *response)
-{
- response->length = be16_to_cpu(response->length);
- response->value = be32_to_cpu(response->value);
-}
-
-/**
- * ufshcd_query_to_be() - formats the buffer to big endian
- * @request: upiu query request to convert
- */
-static inline void ufshcd_query_to_be(struct utp_upiu_query *request)
-{
- request->length = cpu_to_be16(request->length);
- request->value = cpu_to_be32(request->value);
-}
-
-/**
* ufshcd_copy_query_response() - Copy the Query Response and the data
* descriptor
* @hba: per adapter instance
@@ -425,7 +405,6 @@ void ufshcd_copy_query_response(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
UPIU_RSP_CODE_OFFSET;
memcpy(&query_res->upiu_res, &lrbp->ucd_rsp_ptr->qr, QUERY_OSF_SIZE);
- ufshcd_query_to_cpu(&query_res->upiu_res);
/* Get the descriptor */
@@ -749,7 +728,7 @@ static void ufshcd_prepare_utp_query_req_upiu(struct ufs_hba *hba,
{
struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
struct ufs_query *query = &hba->dev_cmd.query;
- u16 len = query->request.upiu_req.length;
+ u16 len = be16_to_cpu(query->request.upiu_req.length);
u8 *descp = (u8 *)lrbp->ucd_req_ptr + GENERAL_UPIU_REQUEST_SIZE;
/* Query request header */
@@ -766,7 +745,6 @@ static void ufshcd_prepare_utp_query_req_upiu(struct ufs_hba *hba,
/* Copy the Query Request buffer as is */
memcpy(&ucd_req_ptr->qr, &query->request.upiu_req,
QUERY_OSF_SIZE);
- ufshcd_query_to_be(&ucd_req_ptr->qr);
/* Copy the Descriptor */
if ((len > 0) && (query->request.upiu_req.opcode ==
@@ -1151,7 +1129,7 @@ static int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
}
if (flag_res)
- *flag_res = (response->upiu_res.value &
+ *flag_res = (be32_to_cpu(response->upiu_res.value) &
MASK_QUERY_UPIU_FLAG_LOC) & 0x1;
out_unlock:
@@ -1195,7 +1173,7 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
switch (opcode) {
case UPIU_QUERY_OPCODE_WRITE_ATTR:
request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
- request->upiu_req.value = *attr_val;
+ request->upiu_req.value = cpu_to_be32(*attr_val);
break;
case UPIU_QUERY_OPCODE_READ_ATTR:
request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
@@ -1222,7 +1200,7 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
goto out_unlock;
}
- *attr_val = response->upiu_res.value;
+ *attr_val = be32_to_cpu(response->upiu_res.value);
out_unlock:
mutex_unlock(&hba->dev_cmd.lock);
@@ -2568,12 +2546,8 @@ ufshcd_issue_tm_cmd(struct ufs_hba *hba,
task_req_upiup->header.dword_1 =
UPIU_HEADER_DWORD(0, tm_function, 0, 0);
- task_req_upiup->input_param1 = lrbp->lun;
- task_req_upiup->input_param1 =
- cpu_to_be32(task_req_upiup->input_param1);
- task_req_upiup->input_param2 = lrbp->task_tag;
- task_req_upiup->input_param2 =
- cpu_to_be32(task_req_upiup->input_param2);
+ task_req_upiup->input_param1 = cpu_to_be32(lrbp->lun);
+ task_req_upiup->input_param2 = cpu_to_be32(lrbp->task_tag);
/* send command to the controller */
__set_bit(free_slot, &hba->outstanding_tasks);
diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h
index 0475c66..9abc7e3 100644
--- a/drivers/scsi/ufs/ufshci.h
+++ b/drivers/scsi/ufs/ufshci.h
@@ -304,10 +304,10 @@ enum {
* @size: size of physical segment DW-3
*/
struct ufshcd_sg_entry {
- u32 base_addr;
- u32 upper_addr;
- u32 reserved;
- u32 size;
+ __le32 base_addr;
+ __le32 upper_addr;
+ __le32 reserved;
+ __le32 size;
};
/**
@@ -330,10 +330,10 @@ struct utp_transfer_cmd_desc {
* @dword3: Descriptor Header DW3
*/
struct request_desc_header {
- u32 dword_0;
- u32 dword_1;
- u32 dword_2;
- u32 dword_3;
+ __le32 dword_0;
+ __le32 dword_1;
+ __le32 dword_2;
+ __le32 dword_3;
};
/**
@@ -352,16 +352,16 @@ struct utp_transfer_req_desc {
struct request_desc_header header;
/* DW 4-5*/
- u32 command_desc_base_addr_lo;
- u32 command_desc_base_addr_hi;
+ __le32 command_desc_base_addr_lo;
+ __le32 command_desc_base_addr_hi;
/* DW 6 */
- u16 response_upiu_length;
- u16 response_upiu_offset;
+ __le16 response_upiu_length;
+ __le16 response_upiu_offset;
/* DW 7 */
- u16 prd_table_length;
- u16 prd_table_offset;
+ __le16 prd_table_length;
+ __le16 prd_table_offset;
};
/**
@@ -376,10 +376,10 @@ struct utp_task_req_desc {
struct request_desc_header header;
/* DW 4-11 */
- u32 task_req_upiu[TASK_REQ_UPIU_SIZE_DWORDS];
+ __le32 task_req_upiu[TASK_REQ_UPIU_SIZE_DWORDS];
/* DW 12-19 */
- u32 task_rsp_upiu[TASK_RSP_UPIU_SIZE_DWORDS];
+ __le32 task_rsp_upiu[TASK_RSP_UPIU_SIZE_DWORDS];
};
#endif /* End of Header */
--
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