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scsi: ufs: core: Add Event Specific Interrupt configuration vendor specific ops

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As Event Specific Interrupt message format is not defined in UFSHCI JEDEC
specs, and the ESI handling highly depends on how the format is designed,
hence add a vendor specific ops such that SoC vendors can configure their
own ESI handlers. If ESI vops is not provided or returning error, go with
the legacy (central) interrupt way.

Signed-off-by: Can Guo <quic_cang@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Can Guo 2022-12-14 19:06:20 -08:00 committed by Martin K. Petersen
parent eacb139b77
commit edb0db0560
3 changed files with 15 additions and 0 deletions
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8
drivers/ufs/core/ufshcd-priv.h
View File

@ -279,6 +279,14 @@ static inline int ufshcd_vops_get_outstanding_cqs(struct ufs_hba *hba,
return -EOPNOTSUPP;
}
static inline int ufshcd_mcq_vops_config_esi(struct ufs_hba *hba)
{
if (hba->vops && hba->vops->config_esi)
return hba->vops->config_esi(hba);
return -EOPNOTSUPP;
}
extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];
/**

5
drivers/ufs/core/ufshcd.c
View File

@ -8449,6 +8449,11 @@ err:
static void ufshcd_config_mcq(struct ufs_hba *hba)
{
int ret;
ret = ufshcd_mcq_vops_config_esi(hba);
dev_info(hba->dev, "ESI %sconfigured\n", ret ? "is not " : "");
ufshcd_enable_intr(hba, UFSHCD_ENABLE_MCQ_INTRS);
ufshcd_mcq_make_queues_operational(hba);
ufshcd_mcq_config_mac(hba, hba->nutrs);

2
include/ufs/ufshcd.h
View File

@ -305,6 +305,7 @@ struct ufs_pwr_mode_info {
* @get_hba_mac: called to get vendor specific mac value, mandatory for mcq mode
* @op_runtime_config: called to config Operation and runtime regs Pointers
* @get_outstanding_cqs: called to get outstanding completion queues
* @config_esi: called to config Event Specific Interrupt
*/
struct ufs_hba_variant_ops {
const char *name;
@ -349,6 +350,7 @@ struct ufs_hba_variant_ops {
int (*op_runtime_config)(struct ufs_hba *hba);
int (*get_outstanding_cqs)(struct ufs_hba *hba,
unsigned long *ocqs);
int (*config_esi)(struct ufs_hba *hba);
};
/* clock gating state */