* RE: [PATCH v3] scsi: ufs: add a variant operation in struct ufs_hba_variant_ops
2022-09-15 13:49 ` [PATCH v3] scsi: ufs: add a variant operation in struct ufs_hba_variant_ops SEO HOYOUNG
@ 2022-09-19 12:36 ` Alim Akhtar
0 siblings, 0 replies; 2+ messages in thread
From: Alim Akhtar @ 2022-09-19 12:36 UTC (permalink / raw)
To: 'SEO HOYOUNG',
linux-scsi, linux-kernel, avri.altman, jejb, martin.petersen,
beanhuo, bvanassche, bhoon95.kim, kwmad.kim
Hi Seo
>-----Original Message-----
>From: SEO HOYOUNG [mailto:hy50.seo@samsung.com]
>Sent: Thursday, September 15, 2022 7:20 PM
>To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org;
>alim.akhtar@samsung.com; avri.altman@wdc.com; jejb@linux.ibm.com;
>martin.petersen@oracle.com; beanhuo@micron.com; bvanassche@acm.org;
>bhoon95.kim@samsung.com; kwmad.kim@samsung.com
>Cc: SEO HOYOUNG <hy50.seo@samsung.com>
>Subject: [PATCH v3] scsi: ufs: add a variant operation in struct
>ufs_hba_variant_ops
>
>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
>
>v2->v3
>fixed operator error
>
>Signed-off-by: SEO HOYOUNG <hy50.seo@samsung.com>
>---
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
And you forget to add Bart's Reviewed-by on v2
> 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..a615f3533d75 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
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