diff options
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 65 |
1 files changed, 57 insertions, 8 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 895011b7a0bf..0bf8d552c3ea 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -57,7 +57,8 @@ enum file_state { /* MEI device states */ enum mei_dev_state { - MEI_DEV_INITIALIZING = 0, + MEI_DEV_UNINITIALIZED = 0, + MEI_DEV_INITIALIZING, MEI_DEV_INIT_CLIENTS, MEI_DEV_ENABLED, MEI_DEV_RESETTING, @@ -70,9 +71,9 @@ enum mei_dev_state { /** * enum mei_dev_pxp_mode - MEI PXP mode state * - * @MEI_DEV_PXP_DEFAULT: PCH based device, no initailization required + * @MEI_DEV_PXP_DEFAULT: PCH based device, no initialization required * @MEI_DEV_PXP_INIT: device requires initialization, send setup message to firmware - * @MEI_DEV_PXP_SETUP: device is in setup stage, waiting for firmware repsonse + * @MEI_DEV_PXP_SETUP: device is in setup stage, waiting for firmware response * @MEI_DEV_PXP_READY: device initialized */ enum mei_dev_pxp_mode { @@ -82,6 +83,19 @@ enum mei_dev_pxp_mode { MEI_DEV_PXP_READY = 3, }; +/** + * enum mei_dev_reset_to_pxp - reset to PXP mode performed + * + * @MEI_DEV_RESET_TO_PXP_DEFAULT: before reset + * @MEI_DEV_RESET_TO_PXP_PERFORMED: reset performed + * @MEI_DEV_RESET_TO_PXP_DONE: reset processed + */ +enum mei_dev_reset_to_pxp { + MEI_DEV_RESET_TO_PXP_DEFAULT = 0, + MEI_DEV_RESET_TO_PXP_PERFORMED = 1, + MEI_DEV_RESET_TO_PXP_DONE = 2, +}; + const char *mei_dev_state_str(int state); enum mei_file_transaction_states { @@ -452,13 +466,15 @@ struct mei_dev_timeouts { unsigned int d0i3; /* D0i3 set/unset max response time, in jiffies */ unsigned long hbm; /* HBM operation timeout, in jiffies */ unsigned long mkhi_recv; /* receive timeout, in jiffies */ + unsigned long link_reset_wait; /* link reset wait timeout, in jiffies */ }; /** * struct mei_device - MEI private device struct * - * @dev : device on a bus - * @cdev : character device + * @parent : device on a bus + * @dev : device object + * @cdev : character device pointer * @minor : minor number allocated for device * * @write_list : write pending list @@ -481,6 +497,7 @@ struct mei_dev_timeouts { * * @reset_count : number of consecutive resets * @dev_state : device state + * @wait_dev_state: wait queue for device state change * @hbm_state : state of host bus message protocol * @pxp_mode : PXP device mode * @init_clients_timer : HBM init handshake timeout @@ -512,6 +529,7 @@ struct mei_dev_timeouts { * @fw_ver : FW versions * * @fw_f_fw_ver_supported : fw feature: fw version supported + * @fw_ver_received : fw version received * * @me_clients_rwsem: rw lock over me_clients list * @me_clients : list of FW clients @@ -533,12 +551,15 @@ struct mei_dev_timeouts { * * @dbgfs_dir : debugfs mei root directory * + * @gsc_reset_to_pxp : state of reset to the PXP mode + * * @ops: : hw specific operations * @hw : hw specific data */ struct mei_device { - struct device *dev; - struct cdev cdev; + struct device *parent; + struct device dev; + struct cdev *cdev; int minor; struct list_head write_list; @@ -566,6 +587,7 @@ struct mei_device { */ unsigned long reset_count; enum mei_dev_state dev_state; + wait_queue_head_t wait_dev_state; enum mei_hbm_state hbm_state; enum mei_dev_pxp_mode pxp_mode; u16 init_clients_timer; @@ -604,6 +626,7 @@ struct mei_device { struct mei_fw_version fw_ver[MEI_MAX_FW_VER_BLOCKS]; unsigned int fw_f_fw_ver_supported:1; + unsigned int fw_ver_received:1; struct rw_semaphore me_clients_rwsem; struct list_head me_clients; @@ -628,6 +651,8 @@ struct mei_device { struct dentry *dbgfs_dir; #endif /* CONFIG_DEBUG_FS */ + enum mei_dev_reset_to_pxp gsc_reset_to_pxp; + const struct mei_hw_ops *ops; char hw[] __aligned(sizeof(void *)); }; @@ -678,7 +703,7 @@ static inline u32 mei_slots2data(int slots) * mei init function prototypes */ void mei_device_init(struct mei_device *dev, - struct device *device, + struct device *parent, bool slow_fw, const struct mei_hw_ops *hw_ops); int mei_reset(struct mei_device *dev); @@ -872,5 +897,29 @@ static inline ssize_t mei_fw_status_str(struct mei_device *dev, return ret; } +/** + * kind_is_gsc - checks whether the device is gsc + * + * @dev: the device structure + * + * Return: whether the device is gsc + */ +static inline bool kind_is_gsc(struct mei_device *dev) +{ + /* check kind for NULL because it may be not set, like at the fist call to hw_start */ + return dev->kind && (strcmp(dev->kind, "gsc") == 0); +} +/** + * kind_is_gscfi - checks whether the device is gscfi + * + * @dev: the device structure + * + * Return: whether the device is gscfi + */ +static inline bool kind_is_gscfi(struct mei_device *dev) +{ + /* check kind for NULL because it may be not set, like at the fist call to hw_start */ + return dev->kind && (strcmp(dev->kind, "gscfi") == 0); +} #endif |