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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /drivers/scsi/ufs/ufshcd.h
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
-rw-r--r--drivers/scsi/ufs/ufshcd.h53
1 files changed, 52 insertions, 1 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b47ff0769..c40a0e78a 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -246,6 +246,7 @@ struct ufs_pwr_mode_info {
* @name: variant name
* @init: called when the driver is initialized
* @exit: called to cleanup everything done in init
+ * @get_ufs_hci_version: called to get UFS HCI version
* @clk_scale_notify: notifies that clks are scaled up/down
* @setup_clocks: called before touching any of the controller registers
* @setup_regulators: called before accessing the host controller
@@ -263,6 +264,7 @@ struct ufs_hba_variant_ops {
const char *name;
int (*init)(struct ufs_hba *);
void (*exit)(struct ufs_hba *);
+ u32 (*get_ufs_hci_version)(struct ufs_hba *);
void (*clk_scale_notify)(struct ufs_hba *);
int (*setup_clocks)(struct ufs_hba *, bool);
int (*setup_regulators)(struct ufs_hba *, bool);
@@ -417,11 +419,45 @@ struct ufs_hba {
unsigned int irq;
bool is_irq_enabled;
+ /* Interrupt aggregation support is broken */
+ #define UFSHCD_QUIRK_BROKEN_INTR_AGGR UFS_BIT(0)
+
/*
* delay before each dme command is required as the unipro
* layer has shown instabilities
*/
- #define UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS UFS_BIT(0)
+ #define UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS UFS_BIT(1)
+
+ /*
+ * If UFS host controller is having issue in processing LCC (Line
+ * Control Command) coming from device then enable this quirk.
+ * When this quirk is enabled, host controller driver should disable
+ * the LCC transmission on UFS device (by clearing TX_LCC_ENABLE
+ * attribute of device to 0).
+ */
+ #define UFSHCD_QUIRK_BROKEN_LCC UFS_BIT(2)
+
+ /*
+ * The attribute PA_RXHSUNTERMCAP specifies whether or not the
+ * inbound Link supports unterminated line in HS mode. Setting this
+ * attribute to 1 fixes moving to HS gear.
+ */
+ #define UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP UFS_BIT(3)
+
+ /*
+ * This quirk needs to be enabled if the host contoller only allows
+ * accessing the peer dme attributes in AUTO mode (FAST AUTO or
+ * SLOW AUTO).
+ */
+ #define UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE UFS_BIT(4)
+
+ /*
+ * This quirk needs to be enabled if the host contoller doesn't
+ * advertise the correct version in UFS_VER register. If this quirk
+ * is enabled, standard UFS host driver will call the vendor specific
+ * ops (get_ufs_hci_version) to get the correct version.
+ */
+ #define UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION UFS_BIT(5)
unsigned int quirks; /* Deviations from standard UFSHCI spec. */
@@ -478,6 +514,12 @@ struct ufs_hba {
#define UFSHCD_CAP_CLK_SCALING (1 << 2)
/* Allow auto bkops to enabled during runtime suspend */
#define UFSHCD_CAP_AUTO_BKOPS_SUSPEND (1 << 3)
+ /*
+ * This capability allows host controller driver to use the UFS HCI's
+ * interrupt aggregation capability.
+ * CAUTION: Enabling this might reduce overall UFS throughput.
+ */
+#define UFSHCD_CAP_INTR_AGGR (1 << 4)
struct devfreq *devfreq;
struct ufs_clk_scaling clk_scaling;
@@ -502,6 +544,15 @@ static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba)
return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
}
+static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
+{
+ if ((hba->caps & UFSHCD_CAP_INTR_AGGR) &&
+ !(hba->quirks & UFSHCD_QUIRK_BROKEN_INTR_AGGR))
+ return true;
+ else
+ return false;
+}
+
#define ufshcd_writel(hba, val, reg) \
writel((val), (hba)->mmio_base + (reg))
#define ufshcd_readl(hba, reg) \