[RFC PATCH v1 1/2] scsi: ufs: introduce vendor isr

Kiwoong Kim
2021-08-06T06:49:36Z

This patch is to activate some interrupt sources
that aren't defined in UFSHCI specifications. Those
purpose could be error handling, workaround or whatever.

Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
---
drivers/scsi/ufs/ufshcd.c | 10 ++++++++++
drivers/scsi/ufs/ufshcd.h | 8 ++++++++
2 files changed, 18 insertions(+)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 05495c34a2b7..f85a9b335e0b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6428,6 +6428,16 @@ static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba)
static irqreturn_t ufshcd_sl_intr(struct ufs_hba *hba, u32 intr_status)
{
irqreturn_t retval = IRQ_NONE;
+ int res = 0;
+ unsigned long flags;
+
+ retval = ufshcd_vops_intr(hba, &res);
+ if (res) {
+ spin_lock_irqsave(hba->host->host_lock, flags);
+ hba->force_reset = true;
+ ufshcd_schedule_eh_work(hba);
+ spin_unlock_irqrestore(hba->host->host_lock, flags);
+ }

if (intr_status & UFSHCD_UIC_MASK)
retval |= ufshcd_uic_cmd_compl(hba, intr_status);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 971cfabc4a1e..1ed0a911f864 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -356,6 +356,7 @@ struct ufs_hba_variant_ops {
const union ufs_crypto_cfg_entry *cfg, int slot);
void (*event_notify)(struct ufs_hba *hba,
enum ufs_event_type evt, void *data);
+ irqreturn_t (*intr)(struct ufs_hba *hba, int *res);
};

/* clock gating state */
@@ -1296,6 +1297,13 @@ static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
hba->vops->config_scaling_param(hba, profile, data);
}

+static inline irqreturn_t ufshcd_vops_intr(struct ufs_hba *hba, int *res)
+{
+ if (hba->vops && hba->vops->intr)
+ return hba->vops->intr(hba, res);
+ return IRQ_NONE;
+}
+
extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];

/*
--
2.31.1