diff options
Diffstat (limited to 'kernel/drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | kernel/drivers/misc/mei/mei_dev.h | 145 |
1 files changed, 56 insertions, 89 deletions
diff --git a/kernel/drivers/misc/mei/mei_dev.h b/kernel/drivers/misc/mei/mei_dev.h index f84c39ee2..4250555d5 100644 --- a/kernel/drivers/misc/mei/mei_dev.h +++ b/kernel/drivers/misc/mei/mei_dev.h @@ -88,7 +88,9 @@ enum file_state { MEI_FILE_CONNECTING, MEI_FILE_CONNECTED, MEI_FILE_DISCONNECTING, - MEI_FILE_DISCONNECTED + MEI_FILE_DISCONNECT_REPLY, + MEI_FILE_DISCONNECT_REQUIRED, + MEI_FILE_DISCONNECTED, }; /* MEI device states */ @@ -134,6 +136,8 @@ enum mei_wd_states { * @MEI_FOP_CONNECT: connect * @MEI_FOP_DISCONNECT: disconnect * @MEI_FOP_DISCONNECT_RSP: disconnect response + * @MEI_FOP_NOTIFY_START: start notification + * @MEI_FOP_NOTIFY_STOP: stop notification */ enum mei_cb_file_ops { MEI_FOP_READ = 0, @@ -141,6 +145,8 @@ enum mei_cb_file_ops { MEI_FOP_CONNECT, MEI_FOP_DISCONNECT, MEI_FOP_DISCONNECT_RSP, + MEI_FOP_NOTIFY_START, + MEI_FOP_NOTIFY_STOP, }; /* @@ -176,6 +182,8 @@ struct mei_fw_status { * @props: client properties * @client_id: me client id * @mei_flow_ctrl_creds: flow control credits + * @connect_count: number connections to this client + * @bus_added: added to bus */ struct mei_me_client { struct list_head list; @@ -183,6 +191,8 @@ struct mei_me_client { struct mei_client_properties props; u8 client_id; u8 mei_flow_ctrl_creds; + u8 connect_count; + u8 bus_added; }; @@ -225,18 +235,21 @@ struct mei_cl_cb { * @tx_wait: wait queue for tx completion * @rx_wait: wait queue for rx completion * @wait: wait queue for management operation + * @ev_wait: notification wait queue + * @ev_async: event async notification * @status: connection status - * @cl_uuid: client uuid name + * @me_cl: fw client connected * @host_client_id: host id - * @me_client_id: me/fw id * @mei_flow_ctrl_creds: transmit flow credentials * @timer_count: watchdog timer for operation completion + * @reserved: reserved for alignment + * @notify_en: notification - enabled/disabled + * @notify_ev: pending notification event * @writing_state: state of the tx * @rd_pending: pending read credits * @rd_completed: completed read * - * @device: device on the mei client bus - * @device_link: link to bus clients + * @cldev: device on the mei client bus */ struct mei_cl { struct list_head link; @@ -245,47 +258,50 @@ struct mei_cl { wait_queue_head_t tx_wait; wait_queue_head_t rx_wait; wait_queue_head_t wait; + wait_queue_head_t ev_wait; + struct fasync_struct *ev_async; int status; - uuid_le cl_uuid; + struct mei_me_client *me_cl; u8 host_client_id; - u8 me_client_id; u8 mei_flow_ctrl_creds; u8 timer_count; + u8 reserved; + u8 notify_en; + u8 notify_ev; enum mei_file_transaction_states writing_state; struct list_head rd_pending; struct list_head rd_completed; - /* MEI CL bus data */ - struct mei_cl_device *device; - struct list_head device_link; + struct mei_cl_device *cldev; }; -/** struct mei_hw_ops +/** + * struct mei_hw_ops - hw specific ops * * @host_is_ready : query for host readiness - + * * @hw_is_ready : query if hw is ready * @hw_reset : reset hw * @hw_start : start hw after reset * @hw_config : configure hw - + * * @fw_status : get fw status registers * @pg_state : power gating state of the device * @pg_in_transition : is device now in pg transition * @pg_is_enabled : is power gating enabled - + * * @intr_clear : clear pending interrupts * @intr_enable : enable interrupts * @intr_disable : disable interrupts - + * * @hbuf_free_slots : query for write buffer empty slots * @hbuf_is_ready : query if write buffer is empty * @hbuf_max_len : query for write buffer max len - + * * @write : write a message to FW - + * * @rdbuf_full_slots : query how many slots are filled - + * * @read_hdr : get first 4 bytes (header) * @read : read a buffer from the FW */ @@ -324,75 +340,16 @@ struct mei_hw_ops { }; /* MEI bus API*/ - -/** - * struct mei_cl_ops - MEI CL device ops - * This structure allows ME host clients to implement technology - * specific operations. - * - * @enable: Enable an MEI CL device. Some devices require specific - * HECI commands to initialize completely. - * @disable: Disable an MEI CL device. - * @send: Tx hook for the device. This allows ME host clients to trap - * the device driver buffers before actually physically - * pushing it to the ME. - * @recv: Rx hook for the device. This allows ME host clients to trap the - * ME buffers before forwarding them to the device driver. - */ -struct mei_cl_ops { - int (*enable)(struct mei_cl_device *device); - int (*disable)(struct mei_cl_device *device); - int (*send)(struct mei_cl_device *device, u8 *buf, size_t length); - int (*recv)(struct mei_cl_device *device, u8 *buf, size_t length); -}; - -struct mei_cl_device *mei_cl_add_device(struct mei_device *dev, - uuid_le uuid, char *name, - struct mei_cl_ops *ops); -void mei_cl_remove_device(struct mei_cl_device *device); - -ssize_t __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length); -ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length); +void mei_cl_bus_rescan(struct mei_device *bus); +void mei_cl_bus_dev_fixup(struct mei_cl_device *dev); +ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, + bool blocking); ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length); void mei_cl_bus_rx_event(struct mei_cl *cl); -void mei_cl_bus_remove_devices(struct mei_device *dev); +void mei_cl_bus_notify_event(struct mei_cl *cl); +void mei_cl_bus_remove_devices(struct mei_device *bus); int mei_cl_bus_init(void); void mei_cl_bus_exit(void); -struct mei_cl *mei_cl_bus_find_cl_by_uuid(struct mei_device *dev, uuid_le uuid); - - -/** - * struct mei_cl_device - MEI device handle - * An mei_cl_device pointer is returned from mei_add_device() - * and links MEI bus clients to their actual ME host client pointer. - * Drivers for MEI devices will get an mei_cl_device pointer - * when being probed and shall use it for doing ME bus I/O. - * - * @dev: linux driver model device pointer - * @cl: mei client - * @ops: ME transport ops - * @event_work: async work to execute event callback - * @event_cb: Drivers register this callback to get asynchronous ME - * events (e.g. Rx buffer pending) notifications. - * @event_context: event callback run context - * @events: Events bitmask sent to the driver. - * @priv_data: client private data - */ -struct mei_cl_device { - struct device dev; - - struct mei_cl *cl; - - const struct mei_cl_ops *ops; - - struct work_struct event_work; - mei_cl_event_cb_t event_cb; - void *event_context; - unsigned long events; - - void *priv_data; -}; - /** * enum mei_pg_event - power gating transition events @@ -465,7 +422,10 @@ const char *mei_pg_state_str(enum mei_pg_state state); * @wr_msg : the buffer for hbm control messages * * @version : HBM protocol version in use - * @hbm_f_pg_supported : hbm feature pgi protocol + * @hbm_f_pg_supported : hbm feature pgi protocol + * @hbm_f_dc_supported : hbm feature dynamic clients + * @hbm_f_dot_supported : hbm feature disconnect on timeout + * @hbm_f_ev_supported : hbm feature event notification * * @me_clients_rwsem: rw lock over me_clients list * @me_clients : list of FW clients @@ -473,6 +433,8 @@ const char *mei_pg_state_str(enum mei_pg_state state); * @host_clients_map : host clients id pool * @me_client_index : last FW client index in enumeration * + * @allow_fixed_address: allow user space to connect a fixed client + * * @wd_cl : watchdog client * @wd_state : watchdog client state * @wd_pending : watchdog command is pending @@ -485,7 +447,6 @@ const char *mei_pg_state_str(enum mei_pg_state state); * @iamthif_cl : amthif host client * @iamthif_current_cb : amthif current operation callback * @iamthif_open_count : number of opened amthif connections - * @iamthif_mtu : amthif client max message length * @iamthif_timer : time stamp of current amthif command completion * @iamthif_stall_timer : timer to detect amthif hang * @iamthif_state : amthif processor state @@ -495,6 +456,7 @@ const char *mei_pg_state_str(enum mei_pg_state state); * @reset_work : work item for the device reset * * @device_list : mei client bus list + * @cl_bus_lock : client bus list lock * * @dbgfs_dir : debugfs mei root directory * @@ -557,6 +519,9 @@ struct mei_device { struct hbm_version version; unsigned int hbm_f_pg_supported:1; + unsigned int hbm_f_dc_supported:1; + unsigned int hbm_f_dot_supported:1; + unsigned int hbm_f_ev_supported:1; struct rw_semaphore me_clients_rwsem; struct list_head me_clients; @@ -564,6 +529,8 @@ struct mei_device { DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX); unsigned long me_client_index; + bool allow_fixed_address; + struct mei_cl wd_cl; enum mei_wd_states wd_state; bool wd_pending; @@ -579,7 +546,6 @@ struct mei_device { struct mei_cl iamthif_cl; struct mei_cl_cb *iamthif_current_cb; long iamthif_open_count; - int iamthif_mtu; unsigned long iamthif_timer; u32 iamthif_stall_timer; enum iamthif_states iamthif_state; @@ -590,6 +556,7 @@ struct mei_device { /* List of bus devices */ struct list_head device_list; + struct mutex cl_bus_lock; #if IS_ENABLED(CONFIG_DEBUG_FS) struct dentry *dbgfs_dir; @@ -658,7 +625,7 @@ void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); */ void mei_amthif_reset_params(struct mei_device *dev); -int mei_amthif_host_init(struct mei_device *dev); +int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl); int mei_amthif_read(struct mei_device *dev, struct file *file, char __user *ubuf, size_t length, loff_t *offset); @@ -685,7 +652,7 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots); /* * NFC functions */ -int mei_nfc_host_init(struct mei_device *dev); +int mei_nfc_host_init(struct mei_device *dev, struct mei_me_client *me_cl); void mei_nfc_host_exit(struct mei_device *dev); /* @@ -695,7 +662,7 @@ extern const uuid_le mei_nfc_guid; int mei_wd_send(struct mei_device *dev); int mei_wd_stop(struct mei_device *dev); -int mei_wd_host_init(struct mei_device *dev); +int mei_wd_host_init(struct mei_device *dev, struct mei_me_client *me_cl); /* * mei_watchdog_register - Registering watchdog interface * once we got connection to the WD Client |