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scsi: ufs: core: Prepare for completion in MCQ

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Modify completion path APIs and add completion queue entry.

Co-developed-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Asutosh Das 2023-01-13 12:48:49 -08:00 committed by Martin K. Petersen
parent 854f84e7fe
commit c30d8d010b
2 changed files with 50 additions and 30 deletions
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2
drivers/ufs/core/ufshcd-priv.h
View file

@ -61,6 +61,8 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
enum flag_idn idn, u8 index, bool *flag_res);
void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
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);
int ufshcd_mcq_memory_alloc(struct ufs_hba *hba);

78
drivers/ufs/core/ufshcd.c
View file

@ -776,12 +776,17 @@ static inline bool ufshcd_is_device_present(struct ufs_hba *hba)
/**
* ufshcd_get_tr_ocs - Get the UTRD Overall Command Status
* @lrbp: pointer to local command reference block
* @cqe: pointer to the completion queue entry
*
* This function is used to get the OCS field from UTRD
* Returns the OCS field in the UTRD
*/
static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp)
static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp,
struct cq_entry *cqe)
{
if (cqe)
return le32_to_cpu(cqe->status) & MASK_OCS;
return le32_to_cpu(lrbp->utr_descriptor_ptr->header.dword_2) & MASK_OCS;
}
@ -3068,7 +3073,7 @@ static int ufshcd_wait_for_dev_cmd(struct ufs_hba *hba,
* not trigger any race conditions.
*/
hba->dev_cmd.complete = NULL;
err = ufshcd_get_tr_ocs(lrbp);
err = ufshcd_get_tr_ocs(lrbp, hba->dev_cmd.cqe);
if (!err)
err = ufshcd_dev_cmd_completion(hba, lrbp);
} else {
@ -5202,18 +5207,20 @@ ufshcd_scsi_cmd_status(struct ufshcd_lrb *lrbp, int scsi_status)
* ufshcd_transfer_rsp_status - Get overall status of the response
* @hba: per adapter instance
* @lrbp: pointer to local reference block of completed command
* @cqe: pointer to the completion queue entry
*
* Returns result of the command to notify SCSI midlayer
*/
static inline int
ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp,
struct cq_entry *cqe)
{
int result = 0;
int scsi_status;
enum utp_ocs ocs;
/* overall command status of utrd */
ocs = ufshcd_get_tr_ocs(lrbp);
ocs = ufshcd_get_tr_ocs(lrbp, cqe);
if (hba->quirks & UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR) {
if (be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_1) &
@ -5377,6 +5384,40 @@ static void ufshcd_release_scsi_cmd(struct ufs_hba *hba,
ufshcd_clk_scaling_update_busy(hba);
}
/**
* ufshcd_compl_one_cqe - handle a completion queue entry
* @hba: per adapter instance
* @task_tag: the task tag of the request to be completed
* @cqe: pointer to the completion queue entry
*/
void ufshcd_compl_one_cqe(struct ufs_hba *hba, int task_tag,
struct cq_entry *cqe)
{
struct ufshcd_lrb *lrbp;
struct scsi_cmnd *cmd;
lrbp = &hba->lrb[task_tag];
lrbp->compl_time_stamp = ktime_get();
cmd = lrbp->cmd;
if (cmd) {
if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
ufshcd_update_monitor(hba, lrbp);
ufshcd_add_command_trace(hba, task_tag, UFS_CMD_COMP);
cmd->result = ufshcd_transfer_rsp_status(hba, lrbp, cqe);
ufshcd_release_scsi_cmd(hba, lrbp);
/* Do not touch lrbp after scsi done */
scsi_done(cmd);
} else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
if (hba->dev_cmd.complete) {
hba->dev_cmd.cqe = cqe;
ufshcd_add_command_trace(hba, task_tag, UFS_DEV_COMP);
complete(hba->dev_cmd.complete);
ufshcd_clk_scaling_update_busy(hba);
}
}
}
/**
* __ufshcd_transfer_req_compl - handle SCSI and query command completion
* @hba: per adapter instance
@ -5385,33 +5426,10 @@ static void ufshcd_release_scsi_cmd(struct ufs_hba *hba,
static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
unsigned long completed_reqs)
{
struct ufshcd_lrb *lrbp;
struct scsi_cmnd *cmd;
int index;
int tag;
for_each_set_bit(index, &completed_reqs, hba->nutrs) {
lrbp = &hba->lrb[index];
lrbp->compl_time_stamp = ktime_get();
lrbp->compl_time_stamp_local_clock = local_clock();
cmd = lrbp->cmd;
if (cmd) {
if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
ufshcd_update_monitor(hba, lrbp);
ufshcd_add_command_trace(hba, index, UFS_CMD_COMP);
cmd->result = ufshcd_transfer_rsp_status(hba, lrbp);
ufshcd_release_scsi_cmd(hba, lrbp);
/* Do not touch lrbp after scsi done */
scsi_done(cmd);
} else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
if (hba->dev_cmd.complete) {
ufshcd_add_command_trace(hba, index,
UFS_DEV_COMP);
complete(hba->dev_cmd.complete);
ufshcd_clk_scaling_update_busy(hba);
}
}
}
for_each_set_bit(tag, &completed_reqs, hba->nutrs)
ufshcd_compl_one_cqe(hba, tag, NULL);
}
/* Any value that is not an existing queue number is fine for this constant. */