Respective UFS devices have their own characteristics and
many of them could be a form of numbers, such as timeout
and a number of retires. This introduces the way to set
those things per specific device vendor or specific device.
I wrote this like the style of ufs_fixups stuffs.
Signed-off-by: Kiwoong Kim <kwmad.kim@xxxxxxxxxxx>
---
drivers/scsi/ufs/ufs_quirks.h | 13 +++++++++++++
drivers/scsi/ufs/ufshcd.c | 39 +++++++++++++++++++++++++++++++++++++++
drivers/scsi/ufs/ufshcd.h | 1 +
3 files changed, 53 insertions(+)
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
index 2a00414..f074093 100644
--- a/drivers/scsi/ufs/ufs_quirks.h
+++ b/drivers/scsi/ufs/ufs_quirks.h
@@ -29,6 +29,19 @@ struct ufs_dev_fix {
unsigned int quirk;
};
+enum dev_val_type {
+ DEV_VAL_FDEVICEINIT = 0x0,
+ DEV_VAL_NUM,
+};
+
+struct ufs_dev_value {
+ u16 wmanufacturerid;
+ u8 *model;
+ u32 key;
+ u32 val;
+ bool enable;
+};
+
#define END_FIX { }
/* add specific device quirk */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 52abe82..b26f182 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -207,6 +207,21 @@ static struct ufs_dev_fix ufs_fixups[] = {
END_FIX
};
+static const struct ufs_dev_value ufs_dev_values[] = {
+ {0, 0, 0, 0, false},
+};
+
+static inline bool
+ufs_get_dev_specific_value(struct ufs_hba *hba,
+ enum dev_val_type type, u32 *val)
+{
+ if (!ufs_dev_values[type].enable)
+ return false;
+
+ *val = hba->dev_value[type];
+ return true;
+}
+
static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba);
static void ufshcd_async_scan(void *data, async_cookie_t cookie);
static int ufshcd_reset_and_restore(struct ufs_hba *hba);
@@ -6923,11 +6938,35 @@ void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, struct ufs_dev_fix *fixups)
}
EXPORT_SYMBOL_GPL(ufshcd_fixup_dev_quirks);
+static void ufshcd_set_dev_values(struct ufs_hba *hba,
+ const struct ufs_dev_value *value)
+{
+ struct ufs_dev_value *f;
+ struct ufs_dev_info *dev_info = &hba->dev_info;
+
+ if (!value)
+ return;
+
+ for (f = (struct ufs_dev_value *)value; f->val; f++) {
+ if ((f->wmanufacturerid == dev_info->wmanufacturerid ||
+ f->wmanufacturerid == UFS_ANY_VENDOR) &&
+ ((dev_info->model &&
+ STR_PRFX_EQUAL(f->model, dev_info->model)) ||
+ !strcmp(f->model, UFS_ANY_MODEL))) {
+ f->enable = true;
+ hba->dev_value[f->key] = f->val;
+ }
+ }
+}
+
static void ufs_fixup_device_setup(struct ufs_hba *hba)
{
/* fix by general quirk table */
ufshcd_fixup_dev_quirks(hba, ufs_fixups);
+ /* set device specific values */
+ ufshcd_set_dev_values(hba, ufs_dev_values);
+
/* allow vendors to fix quirks */
ufshcd_vops_fixup_dev_quirks(hba);
}
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index c774012..f221ca7 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -670,6 +670,7 @@ struct ufs_hba {
/* Device deviations from standard UFS device spec. */
unsigned int dev_quirks;
+ u32 dev_value[DEV_VAL_NUM];
struct blk_mq_tag_set tmf_tag_set;
struct request_queue *tmf_queue;
--
2.7.4
