diff options
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 635 |
1 files changed, 439 insertions, 196 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 25da04549d0..5c7e990e2f2 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -21,7 +21,10 @@ #include <linux/watchdog.h> #include <linux/poll.h> #include <linux/mei.h> +#include <linux/mei_cl_bus.h> + #include "hw.h" +#include "hbm.h" /* * watch dog definition @@ -44,7 +47,7 @@ /* * AMTHI Client UUID */ -extern const uuid_le mei_amthi_guid; +extern const uuid_le mei_amthif_guid; /* * Watchdog Client UUID @@ -52,25 +55,31 @@ extern const uuid_le mei_amthi_guid; extern const uuid_le mei_wd_guid; /* - * Watchdog independence state message + * Number of Maximum MEI Clients */ -extern const u8 mei_wd_state_independence_msg[3][4]; +#define MEI_CLIENTS_MAX 256 /* - * Number of Maximum MEI Clients + * maximum number of consecutive resets */ -#define MEI_CLIENTS_MAX 256 +#define MEI_MAX_CONSEC_RESET 3 /* * Number of File descriptors/handles * that can be opened to the driver. * - * Limit to 253: 256 Total Clients - * minus internal client for MEI Bus Messags - * minus internal client for AMTHI - * minus internal client for Watchdog + * Limit to 255: 256 Total Clients + * minus internal client for MEI Bus Messages */ -#define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 3) +#define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 1) + +/* + * Internal Clients Number + */ +#define MEI_HOST_CLIENT_ID_ANY (-1) +#define MEI_HBM_HOST_CLIENT_ID 0 /* not used, just for documentation */ +#define MEI_WD_HOST_CLIENT_ID 1 +#define MEI_IAMTHIF_HOST_CLIENT_ID 2 /* File state */ @@ -87,22 +96,14 @@ enum mei_dev_state { MEI_DEV_INITIALIZING = 0, MEI_DEV_INIT_CLIENTS, MEI_DEV_ENABLED, - MEI_DEV_RESETING, + MEI_DEV_RESETTING, 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_ENUM_CLIENTS_MESSAGE, - MEI_CLIENT_PROPERTIES_MESSAGE -}; - enum iamthif_states { MEI_IAMTHIF_IDLE, MEI_IAMTHIF_WRITING, @@ -128,16 +129,18 @@ enum mei_wd_states { /** * enum mei_cb_file_ops - file operation associated with the callback - * @MEI_FOP_READ - read - * @MEI_FOP_WRITE - write - * @MEI_FOP_IOCTL - ioctl - * @MEI_FOP_OPEN - open - * @MEI_FOP_CLOSE - close + * @MEI_FOP_READ - read + * @MEI_FOP_WRITE - write + * @MEI_FOP_CONNECT - connect + * @MEI_FOP_DISCONNECT_RSP - disconnect response + * @MEI_FOP_OPEN - open + * @MEI_FOP_CLOSE - close */ enum mei_cb_file_ops { MEI_FOP_READ = 0, MEI_FOP_WRITE, - MEI_FOP_IOCTL, + MEI_FOP_CONNECT, + MEI_FOP_DISCONNECT_RSP, MEI_FOP_OPEN, MEI_FOP_CLOSE }; @@ -145,11 +148,38 @@ enum mei_cb_file_ops { /* * Intel MEI message data struct */ -struct mei_message_data { +struct mei_msg_data { u32 size; unsigned char *data; }; +/* Maximum number of processed FW status registers */ +#define MEI_FW_STATUS_MAX 2 + +/* + * struct mei_fw_status - storage of FW status data + * + * @count - number of actually available elements in array + * @status - FW status registers + */ +struct mei_fw_status { + int count; + u32 status[MEI_FW_STATUS_MAX]; +}; + +/** + * struct mei_me_client - representation of me (fw) client + * + * @props - client properties + * @client_id - me client id + * @mei_flow_ctrl_creds - flow control credits + */ +struct mei_me_client { + struct mei_client_properties props; + u8 client_id; + u8 mei_flow_ctrl_creds; +}; + struct mei_cl; @@ -163,14 +193,15 @@ struct mei_cl_cb { struct list_head list; struct mei_cl *cl; enum mei_cb_file_ops fop_type; - struct mei_message_data request_buffer; - struct mei_message_data response_buffer; + struct mei_msg_data request_buffer; + struct mei_msg_data response_buffer; unsigned long buf_idx; unsigned long read_time; struct file *file_object; + u32 internal:1; }; -/* MEI client instance carried as file->pirvate_data*/ +/* MEI client instance carried as file->private_data*/ struct mei_cl { struct list_head link; struct mei_device *dev; @@ -178,7 +209,6 @@ struct mei_cl { wait_queue_head_t tx_wait; wait_queue_head_t rx_wait; wait_queue_head_t wait; - int read_pending; int status; /* ID of client connected */ u8 host_client_id; @@ -187,14 +217,198 @@ struct mei_cl { u8 timer_count; enum mei_file_transaction_states reading_state; enum mei_file_transaction_states writing_state; - int sm_state; struct mei_cl_cb *read_cb; + + /* MEI CL bus data */ + struct mei_cl_device *device; + struct list_head device_link; + uuid_le device_uuid; }; +/** struct mei_hw_ops + * + * @fw_status - read FW status from PCI config space + * @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 + + * @pg_state - power gating state of the device + * @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 + */ +struct mei_hw_ops { + + int (*fw_status)(struct mei_device *dev, + struct mei_fw_status *fw_status); + bool (*host_is_ready)(struct mei_device *dev); + + bool (*hw_is_ready)(struct mei_device *dev); + int (*hw_reset)(struct mei_device *dev, bool enable); + int (*hw_start)(struct mei_device *dev); + void (*hw_config)(struct mei_device *dev); + + enum mei_pg_state (*pg_state)(struct mei_device *dev); + bool (*pg_is_enabled)(struct mei_device *dev); + + void (*intr_clear)(struct mei_device *dev); + void (*intr_enable)(struct mei_device *dev); + void (*intr_disable)(struct mei_device *dev); + + int (*hbuf_free_slots)(struct mei_device *dev); + bool (*hbuf_is_ready)(struct mei_device *dev); + size_t (*hbuf_max_len)(const struct mei_device *dev); + + int (*write)(struct mei_device *dev, + struct mei_msg_hdr *hdr, + unsigned char *buf); + + int (*rdbuf_full_slots)(struct mei_device *dev); + + u32 (*read_hdr)(const struct mei_device *dev); + int (*read)(struct mei_device *dev, + unsigned char *buf, unsigned long len); +}; + +/* 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); + +int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length); +int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length); +int __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); +int mei_cl_bus_init(void); +void mei_cl_bus_exit(void); + + +/** + * 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 + * @uuid: me client uuid + * @cl: mei client + * @ops: ME transport ops + * @event_cb: Drivers register this callback to get asynchronous ME + * events (e.g. Rx buffer pending) notifications. + * @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 + * + * @MEI_PG_EVENT_IDLE: the driver is not in power gating transition + * @MEI_PG_EVENT_WAIT: the driver is waiting for a pg event to complete + * @MEI_PG_EVENT_RECEIVED: the driver received pg event + */ +enum mei_pg_event { + MEI_PG_EVENT_IDLE, + MEI_PG_EVENT_WAIT, + MEI_PG_EVENT_RECEIVED, +}; + +/** + * enum mei_pg_state - device internal power gating state + * + * @MEI_PG_OFF: device is not power gated - it is active + * @MEI_PG_ON: device is power gated - it is in lower power state + */ +enum mei_pg_state { + MEI_PG_OFF = 0, + MEI_PG_ON = 1, +}; + +/* + * mei_cfg + * + * @fw_status - FW status + * @quirk_probe - device exclusion quirk + */ +struct mei_cfg { + const struct mei_fw_status fw_status; + bool (*quirk_probe)(struct pci_dev *pdev); +}; + + +#define MEI_PCI_DEVICE(dev, cfg) \ + .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \ + .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, \ + .driver_data = (kernel_ulong_t)&(cfg) + + /** * struct mei_device - MEI private device struct - * @hbuf_depth - depth of host(write) buffer - * @wr_ext_msg - buffer for hbm control responses (set in read cycle) + + * @reset_count - limits the number of consecutive resets + * @hbm_state - state of host bus message protocol + * @pg_event - power gating event + * @mem_addr - mem mapped base register address + + * @hbuf_depth - depth of hardware host/write buffer is slots + * @hbuf_is_ready - query if the host host/write buffer is ready + * @wr_msg - the buffer for hbm control messages + * @cfg - per device generation config and ops */ struct mei_device { struct pci_dev *pdev; /* pointer to pci device struct */ @@ -213,55 +427,59 @@ struct mei_device { */ struct list_head file_list; long open_handle_count; - /* - * memory of device - */ - unsigned int mem_base; - unsigned int mem_length; - void __iomem *mem_addr; + /* * lock for the device */ struct mutex device_lock; /* device lock */ struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */ - bool recvd_msg; - /* - * hw states of host and fw(ME) - */ - u32 host_hw_state; - u32 me_hw_state; - u8 hbuf_depth; + + bool recvd_hw_ready; /* * waiting queue for receive message from FW */ + wait_queue_head_t wait_hw_ready; + wait_queue_head_t wait_pg; wait_queue_head_t wait_recvd_msg; wait_queue_head_t wait_stop_wd; /* * mei device states */ + unsigned long reset_count; enum mei_dev_state dev_state; - enum mei_init_clients_states init_clients_state; + enum mei_hbm_state hbm_state; u16 init_clients_timer; - bool need_reset; + + /* + * Power Gating support + */ + enum mei_pg_event pg_event; +#ifdef CONFIG_PM_RUNTIME + struct dev_pm_domain pg_domain; +#endif /* CONFIG_PM_RUNTIME */ unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */ u32 rd_msg_hdr; - u32 wr_msg_buf[128]; /* used for control messages */ + + /* write buffer */ + u8 hbuf_depth; + bool hbuf_is_ready; + + /* used for control messages */ struct { struct mei_msg_hdr hdr; - unsigned char data[4]; /* All HBM messages are 4 bytes */ - } wr_ext_msg; /* for control responses */ + unsigned char data[128]; + } wr_msg; struct hbm_version version; struct mei_me_client *me_clients; /* Note: memory has to be allocated */ DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX); DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX); - u8 me_clients_num; - u8 me_client_presentation_num; - u8 me_client_index; - bool mei_host_buffer_is_empty; + unsigned long me_clients_num; + unsigned long me_client_presentation_num; + unsigned long me_client_index; struct mei_cl wd_cl; enum mei_wd_states wd_state; @@ -277,6 +495,7 @@ struct mei_device { struct file *iamthif_file_object; 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; @@ -289,6 +508,19 @@ struct mei_device { bool iamthif_canceled; struct work_struct init_work; + struct work_struct reset_work; + + /* List of bus devices */ + struct list_head device_list; + +#if IS_ENABLED(CONFIG_DEBUG_FS) + struct dentry *dbgfs_dir; +#endif /* CONFIG_DEBUG_FS */ + + + const struct mei_hw_ops *ops; + const struct mei_cfg *cfg; + char hw[0] __aligned(sizeof(void *)); }; static inline unsigned long mei_secs_to_jiffies(unsigned long sec) @@ -296,100 +528,54 @@ static inline unsigned long mei_secs_to_jiffies(unsigned long sec) return msecs_to_jiffies(sec * MSEC_PER_SEC); } - -/* - * mei init function prototypes - */ -struct mei_device *mei_device_init(struct pci_dev *pdev); -void mei_reset(struct mei_device *dev, int interrupts); -int mei_hw_init(struct mei_device *dev); -int mei_task_initialize_clients(void *data); -int mei_initialize_clients(struct mei_device *dev); -int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl); -void mei_allocate_me_clients_storage(struct mei_device *dev); - - -int mei_me_cl_link(struct mei_device *dev, struct mei_cl *cl, - const uuid_le *cguid, u8 host_client_id); -void mei_me_cl_unlink(struct mei_device *dev, struct mei_cl *cl); -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 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 + * mei_data2slots - get slots - number of (dwords) from a message length + * + size of the mei header + * @length - size of the messages in bytes + * returns - number of slots */ -static inline void mei_io_list_init(struct mei_cl_cb *list) +static inline u32 mei_data2slots(size_t length) { - INIT_LIST_HEAD(&list->list); + return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4); } -void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl); -/* - * MEI ME Client Functions - */ - -struct mei_cl *mei_cl_allocate(struct mei_device *dev); -void mei_cl_init(struct mei_cl *cl, struct mei_device *dev); -int mei_cl_flush_queues(struct mei_cl *cl); /** - * mei_cl_cmp_id - tells if file private data have same id - * - * @fe1: private data of 1. file object - * @fe2: private data of 2. file object - * - * returns true - if ids are the same and not NULL + * mei_slots2data- get data in slots - bytes from slots + * @slots - number of available slots + * returns - number of bytes in slots */ -static inline bool mei_cl_cmp_id(const struct mei_cl *cl1, - const struct mei_cl *cl2) +static inline u32 mei_slots2data(int slots) { - return cl1 && cl2 && - (cl1->host_client_id == cl2->host_client_id) && - (cl1->me_client_id == cl2->me_client_id); + return slots * 4; } - - /* - * MEI Host Client Functions + * mei init function prototypes */ -void mei_host_start_message(struct mei_device *dev); -void mei_host_enum_clients_message(struct mei_device *dev); -int mei_host_client_enumerate(struct mei_device *dev); -void mei_host_client_init(struct work_struct *work); +void mei_device_init(struct mei_device *dev, const struct mei_cfg *cfg); +int mei_reset(struct mei_device *dev); +int mei_start(struct mei_device *dev); +int mei_restart(struct mei_device *dev); +void mei_stop(struct mei_device *dev); +void mei_cancel_work(struct mei_device *dev); /* * MEI interrupt functions prototype */ -irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id); -irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id); -void mei_timer(struct work_struct *work); - -/* - * MEI input output function prototype - */ -int mei_ioctl_connect_client(struct file *file, - struct mei_connect_client_data *data); -int mei_start_read(struct mei_device *dev, struct mei_cl *cl); +void mei_timer(struct work_struct *work); +int mei_irq_read_handler(struct mei_device *dev, + struct mei_cl_cb *cmpl_list, s32 *slots); +int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); +void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); /* * 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_host_init(struct mei_device *dev); int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *priv_cb); @@ -406,104 +592,161 @@ struct mei_cl_cb *mei_amthif_find_read_list_entry(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); - -int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots, - struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list); +int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, + struct mei_cl_cb *cmpl_list); 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_msg(struct mei_device *dev, + struct mei_msg_hdr *mei_hdr, + struct mei_cl_cb *complete_list); int mei_amthif_irq_read(struct mei_device *dev, s32 *slots); /* - * Register Access Function + * NFC functions */ +int mei_nfc_host_init(struct mei_device *dev); +void mei_nfc_host_exit(struct mei_device *dev); -/** - * mei_reg_read - Reads 32bit data from the mei device - * - * @dev: the device structure - * @offset: offset from which to read the data - * - * returns register value (u32) +/* + * NFC Client UUID + */ +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); +/* + * mei_watchdog_register - Registering watchdog interface + * once we got connection to the WD Client + * @dev - mei device + */ +int mei_watchdog_register(struct mei_device *dev); +/* + * mei_watchdog_unregister - Unregistering watchdog interface + * @dev - mei device + */ +void mei_watchdog_unregister(struct mei_device *dev); + +/* + * Register Access Function */ -static inline u32 mei_reg_read(const struct mei_device *dev, - unsigned long offset) + + +static inline void mei_hw_config(struct mei_device *dev) { - return ioread32(dev->mem_addr + offset); + dev->ops->hw_config(dev); } -/** - * mei_reg_write - Writes 32bit data to the mei device - * - * @dev: the device structure - * @offset: offset from which to write the data - * @value: register value to write (u32) - */ -static inline void mei_reg_write(const struct mei_device *dev, - unsigned long offset, u32 value) +static inline enum mei_pg_state mei_pg_state(struct mei_device *dev) { - iowrite32(value, dev->mem_addr + offset); + return dev->ops->pg_state(dev); } -/** - * mei_hcsr_read - Reads 32bit data from the host CSR - * - * @dev: the device structure - * - * returns the byte read. - */ -static inline u32 mei_hcsr_read(const struct mei_device *dev) +static inline bool mei_pg_is_enabled(struct mei_device *dev) { - return mei_reg_read(dev, H_CSR); + return dev->ops->pg_is_enabled(dev); } -/** - * mei_mecsr_read - Reads 32bit data from the ME CSR - * - * @dev: the device structure - * - * returns ME_CSR_HA register value (u32) - */ -static inline u32 mei_mecsr_read(const struct mei_device *dev) +static inline int mei_hw_reset(struct mei_device *dev, bool enable) { - return mei_reg_read(dev, ME_CSR_HA); + return dev->ops->hw_reset(dev, enable); } -/** - * get_me_cb_rw - Reads 32bit data from the mei ME_CB_RW register - * - * @dev: the device structure - * - * returns ME_CB_RW register value (u32) - */ -static inline u32 mei_mecbrw_read(const struct mei_device *dev) +static inline int mei_hw_start(struct mei_device *dev) { - return mei_reg_read(dev, ME_CB_RW); + return dev->ops->hw_start(dev); } +static inline void mei_clear_interrupts(struct mei_device *dev) +{ + dev->ops->intr_clear(dev); +} -/* - * mei interface function prototypes - */ -void mei_hcsr_set(struct mei_device *dev); -void mei_csr_clear_his(struct mei_device *dev); +static inline void mei_enable_interrupts(struct mei_device *dev) +{ + dev->ops->intr_enable(dev); +} + +static inline void mei_disable_interrupts(struct mei_device *dev) +{ + dev->ops->intr_disable(dev); +} + +static inline bool mei_host_is_ready(struct mei_device *dev) +{ + return dev->ops->host_is_ready(dev); +} +static inline bool mei_hw_is_ready(struct mei_device *dev) +{ + return dev->ops->hw_is_ready(dev); +} + +static inline bool mei_hbuf_is_ready(struct mei_device *dev) +{ + return dev->ops->hbuf_is_ready(dev); +} + +static inline int mei_hbuf_empty_slots(struct mei_device *dev) +{ + return dev->ops->hbuf_free_slots(dev); +} + +static inline size_t mei_hbuf_max_len(const struct mei_device *dev) +{ + return dev->ops->hbuf_max_len(dev); +} + +static inline int mei_write_message(struct mei_device *dev, + struct mei_msg_hdr *hdr, + unsigned char *buf) +{ + return dev->ops->write(dev, hdr, buf); +} + +static inline u32 mei_read_hdr(const struct mei_device *dev) +{ + return dev->ops->read_hdr(dev); +} + +static inline void mei_read_slots(struct mei_device *dev, + unsigned char *buf, unsigned long len) +{ + dev->ops->read(dev, buf, len); +} + +static inline int mei_count_full_read_slots(struct mei_device *dev) +{ + return dev->ops->rdbuf_full_slots(dev); +} + +int mei_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status); + +#define FW_STS_FMT "%08X %08X" +#define FW_STS_PRM(fw_status) \ + (fw_status).count > 0 ? (fw_status).status[0] : 0xDEADBEEF, \ + (fw_status).count > 1 ? (fw_status).status[1] : 0xDEADBEEF -void mei_enable_interrupts(struct mei_device *dev); -void mei_disable_interrupts(struct mei_device *dev); +bool mei_hbuf_acquire(struct mei_device *dev); -static inline struct mei_msg_hdr *mei_hbm_hdr(u32 *buf, size_t length) +bool mei_write_is_idle(struct mei_device *dev); + +#if IS_ENABLED(CONFIG_DEBUG_FS) +int mei_dbgfs_register(struct mei_device *dev, const char *name); +void mei_dbgfs_deregister(struct mei_device *dev); +#else +static inline int mei_dbgfs_register(struct mei_device *dev, const char *name) { - struct mei_msg_hdr *hdr = (struct mei_msg_hdr *)buf; - hdr->host_addr = 0; - hdr->me_addr = 0; - hdr->length = length; - hdr->msg_complete = 1; - hdr->reserved = 0; - return hdr; + return 0; } +static inline void mei_dbgfs_deregister(struct mei_device *dev) {} +#endif /* CONFIG_DEBUG_FS */ + +int mei_register(struct mei_device *dev); +void mei_deregister(struct mei_device *dev); + +#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d internal=%1d comp=%1d" +#define MEI_HDR_PRM(hdr) \ + (hdr)->host_addr, (hdr)->me_addr, \ + (hdr)->length, (hdr)->internal, (hdr)->msg_complete #endif |