scsi: ufs: Introduce fixup_dev_quirks vops

Some UFS deivces may have required device quirks or have non-standard
features which are enabled only on specified UFS hosts or for special
customers.

To not "pollute" common device quirk list, i.e. ufs_fixups table, for those
devices mentioned above, introduce "fixup_dev_quirks" vops to allow vendors
to fix or modify device quirks accordingly.

Link: https://lore.kernel.org/r/20200508080115.24233-3-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index a802c5f5ec7cff2abce20939291b8d0dc06b611d..8d86d9a6a622b8b23657200a4624d2a61a12d455 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6838,7 +6838,7 @@ wb_disabled:
        hba->caps &= ~UFSHCD_CAP_WB_EN;
 }
 
-static void ufs_fixup_device_setup(struct ufs_hba *hba)
+static void ufshcd_fixup_dev_quirks(struct ufs_hba *hba)
 {
        struct ufs_dev_fix *f;
        struct ufs_dev_info *dev_info = &hba->dev_info;
@@ -6853,6 +6853,15 @@ static void ufs_fixup_device_setup(struct ufs_hba *hba)
        }
 }
 
+static void ufs_fixup_device_setup(struct ufs_hba *hba)
+{
+       /* fix by general quirk table */
+       ufshcd_fixup_dev_quirks(hba);
+
+       /* allow vendors to fix quirks */
+       ufshcd_vops_fixup_dev_quirks(hba);
+}
+
 static int ufs_get_device_desc(struct ufs_hba *hba)
 {
        int err;

diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 056537e52c192c02150d434c67819242692b01e8..897338ba67aa0034dac7d96d94835536c16ffbf7 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -69,6 +69,7 @@
 #include <scsi/scsi_eh.h>
 
 #include "ufs.h"
+#include "ufs_quirks.h"
 #include "ufshci.h"
 
 #define UFSHCD "ufshcd"
@@ -336,6 +337,7 @@ struct ufs_hba_variant_ops {
        void    (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
                                        enum ufs_notify_change_status);
        int     (*apply_dev_quirks)(struct ufs_hba *hba);
+       void    (*fixup_dev_quirks)(struct ufs_hba *hba);
        int     (*suspend)(struct ufs_hba *, enum ufs_pm_op);
        int     (*resume)(struct ufs_hba *, enum ufs_pm_op);
        void    (*dbg_register_dump)(struct ufs_hba *hba);
@@ -950,7 +952,6 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
 
 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
-
 #define SD_ASCII_STD true
 #define SD_RAW false
 int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
@@ -1085,6 +1086,12 @@ static inline int ufshcd_vops_apply_dev_quirks(struct ufs_hba *hba)
        return 0;
 }
 
+static inline void ufshcd_vops_fixup_dev_quirks(struct ufs_hba *hba)
+{
+       if (hba->vops && hba->vops->fixup_dev_quirks)
+               hba->vops->fixup_dev_quirks(hba);
+}
+
 static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)
 {
        if (hba->vops && hba->vops->suspend)