[PATCH v2] scsi: ufs: add a variant operation in struct ufs_hba_variant_ops

SEO HOYOUNG
2022-09-13T07:54:26Z

Add ufs_hba_variant_ops about vendor error in check_error.
It need to reset when occurred ah8 related error.
At that time could not recovery with pwr cmd.
So add vendor error check function at ufs_hba_variant_ops.

v1->v2
fixed warm message of auto build test

Signed-off-by: SEO HOYOUNG <hy50.seo@samsung.com>
---
drivers/ufs/core/ufshcd-priv.h | 7 +++++++
drivers/ufs/core/ufshcd.c | 2 ++
drivers/ufs/host/ufs-exynos.c | 20 ++++++++++++++++++++
include/ufs/ufshcd.h | 1 +
4 files changed, 30 insertions(+)

diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index d00dba17297d..6172da4d3484 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -221,6 +221,13 @@ static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
hba->vops->config_scaling_param(hba, p, data);
}

+static inline void ufshcd_vops_check_int_error(struct ufs_hba *hba,
+ bool *queue_eh_work)
+{
+ if (hba->vops & hba->vops->check_int_error)
+ hba->vops->check_int_error(hba, queue_eh_work);
+}
+
extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];

/**
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 7c15cbc737b4..39ee5192f26a 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -6542,6 +6542,8 @@ static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba, u32 intr_status)
queue_eh_work = true;
}

+ ufshcd_vops_check_int_error(hba, &queue_eh_work);
+
if (queue_eh_work) {
/*
* update the transfer error masks to sticky bits, let's do this
diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index eced97538082..5d9db6870a66 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -67,6 +67,10 @@
#define CLK_CTRL_EN_MASK (REFCLK_CTRL_EN |\
UNIPRO_PCLK_CTRL_EN |\
UNIPRO_MCLK_CTRL_EN)
+
+#define HCI_AH8_STATE 0x50C
+#define HCI_AH8_STATE_ERROR BIT(16)
+
/* Device fatal error */
#define DFES_ERR_EN BIT(31)
#define DFES_DEF_L2_ERRS (UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OF |\
@@ -1376,6 +1380,21 @@ static void exynos_ufs_hibern8_notify(struct ufs_hba *hba,
}
}

+static void exynos_ufs_check_int_error(struct ufs_hba *hba, bool *queue_eh_work)
+{
+ struct exynos_ufs *ufs = ufshcd_get_variant(hba);
+ u32 val;
+
+ if (ufshcd_is_auto_hibern8_supported(hba)) {
+ val = hci_readl(ufs, HCI_AH8_STATE);
+
+ if (val & HCI_AH8_STATE_ERROR) {
+ ufshcd_set_link_broken(hba);
+ *queue_eh_work = true;
+ }
+ }
+}
+
static int exynos_ufs_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
enum ufs_notify_change_status status)
{
@@ -1569,6 +1588,7 @@ static const struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
.setup_xfer_req = exynos_ufs_specify_nexus_t_xfer_req,
.setup_task_mgmt = exynos_ufs_specify_nexus_t_tm_req,
.hibern8_notify = exynos_ufs_hibern8_notify,
+ .check_int_error = exynos_ufs_check_int_error,
.suspend = exynos_ufs_suspend,
.resume = exynos_ufs_resume,
};
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 24c97e0772bb..40078c4b9f55 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -335,6 +335,7 @@ 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);
+ void (*check_int_error)(struct ufs_hba *hba, bool *queue_eh_work);
};

/* clock gating state */
--
2.26.0