/*
* watch dog definition
*/
-#define MEI_WATCHDOG_DATA_SIZE 16
-#define MEI_START_WD_DATA_SIZE 20
-#define MEI_WD_PARAMS_SIZE 4
+#define MEI_WD_HDR_SIZE 4
+#define MEI_WD_STOP_MSG_SIZE MEI_WD_HDR_SIZE
+#define MEI_WD_START_MSG_SIZE (MEI_WD_HDR_SIZE + 16)
+
+#define MEI_WD_DEFAULT_TIMEOUT 120 /* seconds */
+#define MEI_WD_MIN_TIMEOUT 120 /* seconds */
+#define MEI_WD_MAX_TIMEOUT 65535 /* seconds */
+
+#define MEI_WD_STOP_TIMEOUT 10 /* msecs */
+
#define MEI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0)
#define MEI_RD_MSG_BUF_SIZE (128 * sizeof(u32))
-/*
- * MEI PCI Device object
- */
-extern struct pci_dev *mei_device;
-
/*
* AMTHI Client UUID
*/
extern const u8 mei_wd_state_independence_msg[3][4];
+/*
+ * Number of Maximum MEI Clients
+ */
+#define MEI_CLIENTS_MAX 256
+
/*
* Number of File descriptors/handles
* that can be opened to the driver.
*
- * Limit to 253: 255 Total Clients
+ * Limit to 253: 256 Total Clients
+ * minus internal client for MEI Bus Messags
* minus internal client for AMTHI
* minus internal client for Watchdog
*/
-#define MEI_MAX_OPEN_HANDLE_COUNT 253
+#define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 3)
-/*
- * Number of Maximum MEI Clients
- */
-#define MEI_CLIENTS_MAX 255
/* File state */
enum file_state {
};
/* MEI device states */
-enum mei_states {
- MEI_INITIALIZING = 0,
- MEI_INIT_CLIENTS,
- MEI_ENABLED,
- MEI_RESETING,
- MEI_DISABLED,
- MEI_RECOVERING_FROM_RESET,
- MEI_POWER_DOWN,
- MEI_POWER_UP
+enum mei_dev_state {
+ MEI_DEV_INITIALIZING = 0,
+ MEI_DEV_INIT_CLIENTS,
+ MEI_DEV_ENABLED,
+ MEI_DEV_RESETING,
+ MEI_DEV_DISABLED,
+ MEI_DEV_RECOVERING_FROM_RESET,
+ MEI_DEV_POWER_DOWN,
+ MEI_DEV_POWER_UP
};
+const char *mei_dev_state_str(int state);
+
/* init clients states*/
enum mei_init_clients_states {
MEI_START_MESSAGE = 0,
MEI_READ_COMPLETE
};
+enum mei_wd_states {
+ MEI_WD_IDLE,
+ MEI_WD_RUNNING,
+ MEI_WD_STOPPING,
+};
+
/* MEI CB */
enum mei_cb_major_types {
MEI_READ = 0,
struct mei_message_data {
u32 size;
unsigned char *data;
-} __packed;
+};
struct mei_cl_cb {
- struct list_head cb_list;
+ struct list_head list;
enum mei_cb_major_types major_file_operations;
void *file_private;
struct mei_message_data request_buffer;
struct mei_message_data response_buffer;
- unsigned long information;
+ unsigned long buf_idx;
unsigned long read_time;
struct file *file_object;
};
struct mei_cl_cb *read_cb;
};
-struct mei_io_list {
- struct mei_cl_cb mei_cb;
-};
-
/**
* struct mei_deive - MEI private device struct
* @hbuf_depth - depth of host(write) buffer
/*
* lists of queues
*/
- /* array of pointers to aio lists */
- struct mei_io_list read_list; /* driver read queue */
- struct mei_io_list write_list; /* driver write queue */
- struct mei_io_list write_waiting_list; /* write waiting queue */
- struct mei_io_list ctrl_wr_list; /* managed write IOCTL list */
- struct mei_io_list ctrl_rd_list; /* managed read IOCTL list */
- struct mei_io_list amthi_cmd_list; /* amthi list for cmd waiting */
-
- /* driver managed amthi list for reading completed amthi cmd data */
- struct mei_io_list amthi_read_complete_list;
+ /* array of pointers to aio lists */
+ struct mei_cl_cb read_list; /* driver read queue */
+ struct mei_cl_cb write_list; /* driver write queue */
+ struct mei_cl_cb write_waiting_list; /* write waiting queue */
+ struct mei_cl_cb ctrl_wr_list; /* managed write IOCTL list */
+ struct mei_cl_cb ctrl_rd_list; /* managed read IOCTL list */
+
/*
* list of files
*/
/*
* mei device states
*/
- enum mei_states mei_state;
+ enum mei_dev_state dev_state;
enum mei_init_clients_states init_clients_state;
u16 init_clients_timer;
- bool stop;
bool need_reset;
u32 extra_write_index;
bool mei_host_buffer_is_empty;
struct mei_cl wd_cl;
- bool wd_interface_reg;
+ enum mei_wd_states wd_state;
bool wd_pending;
- bool wd_stopped;
- bool wd_bypass; /* if false, don't refresh watchdog ME client */
- u16 wd_timeout; /* seconds ((wd_data[1] << 8) + wd_data[0]) */
- unsigned char wd_data[MEI_START_WD_DATA_SIZE];
+ u16 wd_timeout;
+ unsigned char wd_data[MEI_WD_START_MSG_SIZE];
+ /* amthif list for cmd waiting */
+ struct mei_cl_cb amthif_cmd_list;
+ /* driver managed amthif list for reading completed amthif cmd data */
+ struct mei_cl_cb amthif_rd_complete_list;
struct file *iamthif_file_object;
struct mei_cl iamthif_cl;
struct mei_cl_cb *iamthif_current_cb;
bool iamthif_canceled;
};
+static inline unsigned long mei_secs_to_jiffies(unsigned long sec)
+{
+ return msecs_to_jiffies(sec * MSEC_PER_SEC);
+}
+
/*
* mei init function prototypes
int mei_initialize_clients(struct mei_device *dev);
int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl);
void mei_remove_client_from_file_list(struct mei_device *dev, u8 host_client_id);
-void mei_host_init_iamthif(struct mei_device *dev);
void mei_allocate_me_clients_storage(struct mei_device *dev);
-u8 mei_find_me_client_update_filext(struct mei_device *dev,
- struct mei_cl *priv,
- const uuid_le *cguid, u8 client_id);
+int mei_me_cl_update_filext(struct mei_device *dev, struct mei_cl *cl,
+ const uuid_le *cguid, u8 host_client_id);
+int mei_me_cl_by_uuid(const struct mei_device *dev, const uuid_le *cuuid);
+int mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
/*
- * MEI IO List Functions
+ * MEI IO Functions
+ */
+struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, struct file *fp);
+void mei_io_cb_free(struct mei_cl_cb *priv_cb);
+int mei_io_cb_alloc_req_buf(struct mei_cl_cb *cb, size_t length);
+int mei_io_cb_alloc_resp_buf(struct mei_cl_cb *cb, size_t length);
+
+
+/**
+ * mei_io_list_init - Sets up a queue list.
+ *
+ * @list: An instance cl callback structure
*/
-void mei_io_list_init(struct mei_io_list *list);
-void mei_io_list_flush(struct mei_io_list *list, struct mei_cl *cl);
+static inline void mei_io_list_init(struct mei_cl_cb *list)
+{
+ INIT_LIST_HEAD(&list->list);
+}
+void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl);
/*
* MEI ME Client Functions
int mei_start_read(struct mei_device *dev, struct mei_cl *cl);
-int amthi_write(struct mei_device *dev, struct mei_cl_cb *priv_cb);
-int amthi_read(struct mei_device *dev, struct file *file,
+/*
+ * AMTHIF - AMT Host Interface Functions
+ */
+void mei_amthif_reset_params(struct mei_device *dev);
+
+void mei_amthif_host_init(struct mei_device *dev);
+
+int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *priv_cb);
+
+int mei_amthif_read(struct mei_device *dev, struct file *file,
char __user *ubuf, size_t length, loff_t *offset);
-struct mei_cl_cb *find_amthi_read_list_entry(struct mei_device *dev,
+struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev,
struct file *file);
-void mei_run_next_iamthif_cmd(struct mei_device *dev);
+void mei_amthif_run_next_cmd(struct mei_device *dev);
+
+
+int mei_amthif_read_message(struct mei_cl_cb *complete_list,
+ struct mei_device *dev, struct mei_msg_hdr *mei_hdr);
-void mei_free_cb_private(struct mei_cl_cb *priv_cb);
+int mei_amthif_irq_process_completed(struct mei_device *dev, s32 *slots,
+ struct mei_cl_cb *cb_pos,
+ struct mei_cl *cl,
+ struct mei_cl_cb *cmpl_list);
-int mei_find_me_client_index(const struct mei_device *dev, uuid_le cuuid);
+void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb);
+int mei_amthif_irq_read_message(struct mei_cl_cb *complete_list,
+ struct mei_device *dev, struct mei_msg_hdr *mei_hdr);
+int mei_amthif_irq_read(struct mei_device *dev, s32 *slots);
/*
* Register Access Function
projects / firefly-linux-kernel-4.4.55.git / blobdiff