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 */
* @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,
MEI_FOP_CONNECT,
MEI_FOP_DISCONNECT,
MEI_FOP_DISCONNECT_RSP,
+ MEI_FOP_NOTIFY_START,
+ MEI_FOP_NOTIFY_STOP,
};
/*
* @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;
struct mei_client_properties props;
u8 client_id;
u8 mei_flow_ctrl_creds;
+ u8 connect_count;
+ u8 bus_added;
};
* @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;
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
*/
};
/* 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
* @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
* @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
* @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
* @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
*
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;
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;
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;
/* List of bus devices */
struct list_head device_list;
+ struct mutex cl_bus_lock;
#if IS_ENABLED(CONFIG_DEBUG_FS)
struct dentry *dbgfs_dir;
*/
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);
/*
* 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);
/*
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
Code Review / kvmfornfv.git / blobdiff