mirror of https://gitee.com/openkylin/linux.git
767 lines
20 KiB
C
767 lines
20 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Intel Management Engine Interface (Intel MEI) Linux driver
|
|
* Copyright (c) 2003-2018, Intel Corporation.
|
|
*/
|
|
|
|
#ifndef _MEI_DEV_H_
|
|
#define _MEI_DEV_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/cdev.h>
|
|
#include <linux/poll.h>
|
|
#include <linux/mei.h>
|
|
#include <linux/mei_cl_bus.h>
|
|
|
|
#include "hw.h"
|
|
#include "hbm.h"
|
|
|
|
#define MEI_SLOT_SIZE sizeof(u32)
|
|
#define MEI_RD_MSG_BUF_SIZE (128 * MEI_SLOT_SIZE)
|
|
|
|
/*
|
|
* Number of Maximum MEI Clients
|
|
*/
|
|
#define MEI_CLIENTS_MAX 256
|
|
|
|
/*
|
|
* maximum number of consecutive resets
|
|
*/
|
|
#define MEI_MAX_CONSEC_RESET 3
|
|
|
|
/*
|
|
* Number of File descriptors/handles
|
|
* that can be opened to the driver.
|
|
*
|
|
* Limit to 255: 256 Total Clients
|
|
* minus internal client for MEI Bus Messages
|
|
*/
|
|
#define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 1)
|
|
|
|
/* File state */
|
|
enum file_state {
|
|
MEI_FILE_UNINITIALIZED = 0,
|
|
MEI_FILE_INITIALIZING,
|
|
MEI_FILE_CONNECTING,
|
|
MEI_FILE_CONNECTED,
|
|
MEI_FILE_DISCONNECTING,
|
|
MEI_FILE_DISCONNECT_REPLY,
|
|
MEI_FILE_DISCONNECT_REQUIRED,
|
|
MEI_FILE_DISCONNECTED,
|
|
};
|
|
|
|
/* MEI device states */
|
|
enum mei_dev_state {
|
|
MEI_DEV_INITIALIZING = 0,
|
|
MEI_DEV_INIT_CLIENTS,
|
|
MEI_DEV_ENABLED,
|
|
MEI_DEV_RESETTING,
|
|
MEI_DEV_DISABLED,
|
|
MEI_DEV_POWER_DOWN,
|
|
MEI_DEV_POWER_UP
|
|
};
|
|
|
|
const char *mei_dev_state_str(int state);
|
|
|
|
enum mei_file_transaction_states {
|
|
MEI_IDLE,
|
|
MEI_WRITING,
|
|
MEI_WRITE_COMPLETE,
|
|
};
|
|
|
|
/**
|
|
* enum mei_cb_file_ops - file operation associated with the callback
|
|
* @MEI_FOP_READ: read
|
|
* @MEI_FOP_WRITE: write
|
|
* @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_WRITE,
|
|
MEI_FOP_CONNECT,
|
|
MEI_FOP_DISCONNECT,
|
|
MEI_FOP_DISCONNECT_RSP,
|
|
MEI_FOP_NOTIFY_START,
|
|
MEI_FOP_NOTIFY_STOP,
|
|
};
|
|
|
|
/**
|
|
* enum mei_cl_io_mode - io mode between driver and fw
|
|
*
|
|
* @MEI_CL_IO_TX_BLOCKING: send is blocking
|
|
* @MEI_CL_IO_TX_INTERNAL: internal communication between driver and FW
|
|
*
|
|
* @MEI_CL_IO_RX_NONBLOCK: recv is non-blocking
|
|
*/
|
|
enum mei_cl_io_mode {
|
|
MEI_CL_IO_TX_BLOCKING = BIT(0),
|
|
MEI_CL_IO_TX_INTERNAL = BIT(1),
|
|
|
|
MEI_CL_IO_RX_NONBLOCK = BIT(2),
|
|
};
|
|
|
|
/*
|
|
* Intel MEI message data struct
|
|
*/
|
|
struct mei_msg_data {
|
|
size_t size;
|
|
unsigned char *data;
|
|
};
|
|
|
|
/**
|
|
* struct mei_dma_dscr - dma address descriptor
|
|
*
|
|
* @vaddr: dma buffer virtual address
|
|
* @daddr: dma buffer physical address
|
|
* @size : dma buffer size
|
|
*/
|
|
struct mei_dma_dscr {
|
|
void *vaddr;
|
|
dma_addr_t daddr;
|
|
size_t size;
|
|
};
|
|
|
|
/* Maximum number of processed FW status registers */
|
|
#define MEI_FW_STATUS_MAX 6
|
|
/* Minimal buffer for FW status string (8 bytes in dw + space or '\0') */
|
|
#define MEI_FW_STATUS_STR_SZ (MEI_FW_STATUS_MAX * (8 + 1))
|
|
|
|
|
|
/*
|
|
* 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
|
|
*
|
|
* @list: link in me client list
|
|
* @refcnt: struct reference count
|
|
* @props: client properties
|
|
* @client_id: me client id
|
|
* @tx_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 kref refcnt;
|
|
struct mei_client_properties props;
|
|
u8 client_id;
|
|
u8 tx_flow_ctrl_creds;
|
|
u8 connect_count;
|
|
u8 bus_added;
|
|
};
|
|
|
|
|
|
struct mei_cl;
|
|
|
|
/**
|
|
* struct mei_cl_cb - file operation callback structure
|
|
*
|
|
* @list: link in callback queue
|
|
* @cl: file client who is running this operation
|
|
* @fop_type: file operation type
|
|
* @buf: buffer for data associated with the callback
|
|
* @buf_idx: last read index
|
|
* @fp: pointer to file structure
|
|
* @status: io status of the cb
|
|
* @internal: communication between driver and FW flag
|
|
* @blocking: transmission blocking mode
|
|
*/
|
|
struct mei_cl_cb {
|
|
struct list_head list;
|
|
struct mei_cl *cl;
|
|
enum mei_cb_file_ops fop_type;
|
|
struct mei_msg_data buf;
|
|
size_t buf_idx;
|
|
const struct file *fp;
|
|
int status;
|
|
u32 internal:1;
|
|
u32 blocking:1;
|
|
};
|
|
|
|
/**
|
|
* struct mei_cl - me client host representation
|
|
* carried in file->private_data
|
|
*
|
|
* @link: link in the clients list
|
|
* @dev: mei parent device
|
|
* @state: file operation state
|
|
* @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
|
|
* @me_cl: fw client connected
|
|
* @fp: file associated with client
|
|
* @host_client_id: host id
|
|
* @tx_flow_ctrl_creds: transmit flow credentials
|
|
* @rx_flow_ctrl_creds: receive flow credentials
|
|
* @timer_count: watchdog timer for operation completion
|
|
* @notify_en: notification - enabled/disabled
|
|
* @notify_ev: pending notification event
|
|
* @tx_cb_queued: number of tx callbacks in queue
|
|
* @writing_state: state of the tx
|
|
* @rd_pending: pending read credits
|
|
* @rd_completed: completed read
|
|
*
|
|
* @cldev: device on the mei client bus
|
|
*/
|
|
struct mei_cl {
|
|
struct list_head link;
|
|
struct mei_device *dev;
|
|
enum file_state state;
|
|
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;
|
|
struct mei_me_client *me_cl;
|
|
const struct file *fp;
|
|
u8 host_client_id;
|
|
u8 tx_flow_ctrl_creds;
|
|
u8 rx_flow_ctrl_creds;
|
|
u8 timer_count;
|
|
u8 notify_en;
|
|
u8 notify_ev;
|
|
u8 tx_cb_queued;
|
|
enum mei_file_transaction_states writing_state;
|
|
struct list_head rd_pending;
|
|
struct list_head rd_completed;
|
|
|
|
struct mei_cl_device *cldev;
|
|
};
|
|
|
|
#define MEI_TX_QUEUE_LIMIT_DEFAULT 50
|
|
#define MEI_TX_QUEUE_LIMIT_MAX 255
|
|
#define MEI_TX_QUEUE_LIMIT_MIN 30
|
|
|
|
/**
|
|
* 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
|
|
* @synchronize_irq : synchronize irqs
|
|
*
|
|
* @hbuf_free_slots : query for write buffer empty slots
|
|
* @hbuf_is_ready : query if write buffer is empty
|
|
* @hbuf_depth : query for write buffer depth
|
|
*
|
|
* @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 {
|
|
|
|
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);
|
|
|
|
int (*fw_status)(struct mei_device *dev, struct mei_fw_status *fw_sts);
|
|
enum mei_pg_state (*pg_state)(struct mei_device *dev);
|
|
bool (*pg_in_transition)(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);
|
|
void (*synchronize_irq)(struct mei_device *dev);
|
|
|
|
int (*hbuf_free_slots)(struct mei_device *dev);
|
|
bool (*hbuf_is_ready)(struct mei_device *dev);
|
|
u32 (*hbuf_depth)(const struct mei_device *dev);
|
|
int (*write)(struct mei_device *dev,
|
|
const void *hdr, size_t hdr_len,
|
|
const void *data, size_t data_len);
|
|
|
|
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*/
|
|
void mei_cl_bus_rescan_work(struct work_struct *work);
|
|
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,
|
|
unsigned int mode);
|
|
ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length,
|
|
unsigned int mode, unsigned long timeout);
|
|
bool mei_cl_bus_rx_event(struct mei_cl *cl);
|
|
bool 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);
|
|
|
|
/**
|
|
* 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
|
|
* @MEI_PG_EVENT_INTR_WAIT: the driver is waiting for a pg event interrupt
|
|
* @MEI_PG_EVENT_INTR_RECEIVED: the driver received pg event interrupt
|
|
*/
|
|
enum mei_pg_event {
|
|
MEI_PG_EVENT_IDLE,
|
|
MEI_PG_EVENT_WAIT,
|
|
MEI_PG_EVENT_RECEIVED,
|
|
MEI_PG_EVENT_INTR_WAIT,
|
|
MEI_PG_EVENT_INTR_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,
|
|
};
|
|
|
|
const char *mei_pg_state_str(enum mei_pg_state state);
|
|
|
|
/**
|
|
* struct mei_fw_version - MEI FW version struct
|
|
*
|
|
* @platform: platform identifier
|
|
* @major: major version field
|
|
* @minor: minor version field
|
|
* @buildno: build number version field
|
|
* @hotfix: hotfix number version field
|
|
*/
|
|
struct mei_fw_version {
|
|
u8 platform;
|
|
u8 major;
|
|
u16 minor;
|
|
u16 buildno;
|
|
u16 hotfix;
|
|
};
|
|
|
|
#define MEI_MAX_FW_VER_BLOCKS 3
|
|
|
|
/**
|
|
* struct mei_device - MEI private device struct
|
|
*
|
|
* @dev : device on a bus
|
|
* @cdev : character device
|
|
* @minor : minor number allocated for device
|
|
*
|
|
* @write_list : write pending list
|
|
* @write_waiting_list : write completion list
|
|
* @ctrl_wr_list : pending control write list
|
|
* @ctrl_rd_list : pending control read list
|
|
* @tx_queue_limit: tx queues per client linit
|
|
*
|
|
* @file_list : list of opened handles
|
|
* @open_handle_count: number of opened handles
|
|
*
|
|
* @device_lock : big device lock
|
|
* @timer_work : MEI timer delayed work (timeouts)
|
|
*
|
|
* @recvd_hw_ready : hw ready message received flag
|
|
*
|
|
* @wait_hw_ready : wait queue for receive HW ready message form FW
|
|
* @wait_pg : wait queue for receive PG message from FW
|
|
* @wait_hbm_start : wait queue for receive HBM start message from FW
|
|
*
|
|
* @reset_count : number of consecutive resets
|
|
* @dev_state : device state
|
|
* @hbm_state : state of host bus message protocol
|
|
* @init_clients_timer : HBM init handshake timeout
|
|
*
|
|
* @pg_event : power gating event
|
|
* @pg_domain : runtime PM domain
|
|
*
|
|
* @rd_msg_buf : control messages buffer
|
|
* @rd_msg_hdr : read message header storage
|
|
*
|
|
* @hbuf_is_ready : query if the host host/write buffer is ready
|
|
* @dr_dscr: DMA ring descriptors: TX, RX, and CTRL
|
|
*
|
|
* @version : HBM protocol version in use
|
|
* @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
|
|
* @hbm_f_fa_supported : hbm feature fixed address client
|
|
* @hbm_f_ie_supported : hbm feature immediate reply to enum request
|
|
* @hbm_f_os_supported : hbm feature support OS ver message
|
|
* @hbm_f_dr_supported : hbm feature dma ring supported
|
|
*
|
|
* @fw_ver : FW versions
|
|
*
|
|
* @me_clients_rwsem: rw lock over me_clients list
|
|
* @me_clients : list of FW clients
|
|
* @me_clients_map : FW clients bit map
|
|
* @host_clients_map : host clients id pool
|
|
*
|
|
* @allow_fixed_address: allow user space to connect a fixed client
|
|
* @override_fixed_address: force allow fixed address behavior
|
|
*
|
|
* @reset_work : work item for the device reset
|
|
* @bus_rescan_work : work item for the bus rescan
|
|
*
|
|
* @device_list : mei client bus list
|
|
* @cl_bus_lock : client bus list lock
|
|
*
|
|
* @dbgfs_dir : debugfs mei root directory
|
|
*
|
|
* @ops: : hw specific operations
|
|
* @hw : hw specific data
|
|
*/
|
|
struct mei_device {
|
|
struct device *dev;
|
|
struct cdev cdev;
|
|
int minor;
|
|
|
|
struct list_head write_list;
|
|
struct list_head write_waiting_list;
|
|
struct list_head ctrl_wr_list;
|
|
struct list_head ctrl_rd_list;
|
|
u8 tx_queue_limit;
|
|
|
|
struct list_head file_list;
|
|
long open_handle_count;
|
|
|
|
struct mutex device_lock;
|
|
struct delayed_work timer_work;
|
|
|
|
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_hbm_start;
|
|
|
|
/*
|
|
* mei device states
|
|
*/
|
|
unsigned long reset_count;
|
|
enum mei_dev_state dev_state;
|
|
enum mei_hbm_state hbm_state;
|
|
u16 init_clients_timer;
|
|
|
|
/*
|
|
* Power Gating support
|
|
*/
|
|
enum mei_pg_event pg_event;
|
|
#ifdef CONFIG_PM
|
|
struct dev_pm_domain pg_domain;
|
|
#endif /* CONFIG_PM */
|
|
|
|
unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE];
|
|
u32 rd_msg_hdr[MEI_MSG_HDR_MAX];
|
|
|
|
/* write buffer */
|
|
bool hbuf_is_ready;
|
|
|
|
struct mei_dma_dscr dr_dscr[DMA_DSCR_NUM];
|
|
|
|
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;
|
|
unsigned int hbm_f_fa_supported:1;
|
|
unsigned int hbm_f_ie_supported:1;
|
|
unsigned int hbm_f_os_supported:1;
|
|
unsigned int hbm_f_dr_supported:1;
|
|
|
|
struct mei_fw_version fw_ver[MEI_MAX_FW_VER_BLOCKS];
|
|
|
|
struct rw_semaphore me_clients_rwsem;
|
|
struct list_head me_clients;
|
|
DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX);
|
|
DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX);
|
|
|
|
bool allow_fixed_address;
|
|
bool override_fixed_address;
|
|
|
|
struct work_struct reset_work;
|
|
struct work_struct bus_rescan_work;
|
|
|
|
/* List of bus devices */
|
|
struct list_head device_list;
|
|
struct mutex cl_bus_lock;
|
|
|
|
#if IS_ENABLED(CONFIG_DEBUG_FS)
|
|
struct dentry *dbgfs_dir;
|
|
#endif /* CONFIG_DEBUG_FS */
|
|
|
|
|
|
const struct mei_hw_ops *ops;
|
|
char hw[0] __aligned(sizeof(void *));
|
|
};
|
|
|
|
static inline unsigned long mei_secs_to_jiffies(unsigned long sec)
|
|
{
|
|
return msecs_to_jiffies(sec * MSEC_PER_SEC);
|
|
}
|
|
|
|
/**
|
|
* mei_data2slots - get slots number from a message length
|
|
*
|
|
* @length: size of the messages in bytes
|
|
*
|
|
* Return: number of slots
|
|
*/
|
|
static inline u32 mei_data2slots(size_t length)
|
|
{
|
|
return DIV_ROUND_UP(length, MEI_SLOT_SIZE);
|
|
}
|
|
|
|
/**
|
|
* mei_hbm2slots - get slots number from a hbm message length
|
|
* length + size of the mei message header
|
|
*
|
|
* @length: size of the messages in bytes
|
|
*
|
|
* Return: number of slots
|
|
*/
|
|
static inline u32 mei_hbm2slots(size_t length)
|
|
{
|
|
return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, MEI_SLOT_SIZE);
|
|
}
|
|
|
|
/**
|
|
* mei_slots2data - get data in slots - bytes from slots
|
|
*
|
|
* @slots: number of available slots
|
|
*
|
|
* Return: number of bytes in slots
|
|
*/
|
|
static inline u32 mei_slots2data(int slots)
|
|
{
|
|
return slots * MEI_SLOT_SIZE;
|
|
}
|
|
|
|
/*
|
|
* mei init function prototypes
|
|
*/
|
|
void mei_device_init(struct mei_device *dev,
|
|
struct device *device,
|
|
const struct mei_hw_ops *hw_ops);
|
|
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);
|
|
|
|
int mei_dmam_ring_alloc(struct mei_device *dev);
|
|
void mei_dmam_ring_free(struct mei_device *dev);
|
|
bool mei_dma_ring_is_allocated(struct mei_device *dev);
|
|
void mei_dma_ring_reset(struct mei_device *dev);
|
|
void mei_dma_ring_read(struct mei_device *dev, unsigned char *buf, u32 len);
|
|
void mei_dma_ring_write(struct mei_device *dev, unsigned char *buf, u32 len);
|
|
u32 mei_dma_ring_empty_slots(struct mei_device *dev);
|
|
|
|
/*
|
|
* MEI interrupt functions prototype
|
|
*/
|
|
|
|
void mei_timer(struct work_struct *work);
|
|
void mei_schedule_stall_timer(struct mei_device *dev);
|
|
int mei_irq_read_handler(struct mei_device *dev,
|
|
struct list_head *cmpl_list, s32 *slots);
|
|
|
|
int mei_irq_write_handler(struct mei_device *dev, struct list_head *cmpl_list);
|
|
void mei_irq_compl_handler(struct mei_device *dev, struct list_head *cmpl_list);
|
|
|
|
/*
|
|
* Register Access Function
|
|
*/
|
|
|
|
|
|
static inline void mei_hw_config(struct mei_device *dev)
|
|
{
|
|
dev->ops->hw_config(dev);
|
|
}
|
|
|
|
static inline enum mei_pg_state mei_pg_state(struct mei_device *dev)
|
|
{
|
|
return dev->ops->pg_state(dev);
|
|
}
|
|
|
|
static inline bool mei_pg_in_transition(struct mei_device *dev)
|
|
{
|
|
return dev->ops->pg_in_transition(dev);
|
|
}
|
|
|
|
static inline bool mei_pg_is_enabled(struct mei_device *dev)
|
|
{
|
|
return dev->ops->pg_is_enabled(dev);
|
|
}
|
|
|
|
static inline int mei_hw_reset(struct mei_device *dev, bool enable)
|
|
{
|
|
return dev->ops->hw_reset(dev, enable);
|
|
}
|
|
|
|
static inline int mei_hw_start(struct mei_device *dev)
|
|
{
|
|
return dev->ops->hw_start(dev);
|
|
}
|
|
|
|
static inline void mei_clear_interrupts(struct mei_device *dev)
|
|
{
|
|
dev->ops->intr_clear(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 void mei_synchronize_irq(struct mei_device *dev)
|
|
{
|
|
dev->ops->synchronize_irq(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 u32 mei_hbuf_depth(const struct mei_device *dev)
|
|
{
|
|
return dev->ops->hbuf_depth(dev);
|
|
}
|
|
|
|
static inline int mei_write_message(struct mei_device *dev,
|
|
const void *hdr, size_t hdr_len,
|
|
const void *data, size_t data_len)
|
|
{
|
|
return dev->ops->write(dev, hdr, hdr_len, data, data_len);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static inline int mei_fw_status(struct mei_device *dev,
|
|
struct mei_fw_status *fw_status)
|
|
{
|
|
return dev->ops->fw_status(dev, fw_status);
|
|
}
|
|
|
|
bool mei_hbuf_acquire(struct mei_device *dev);
|
|
|
|
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)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void mei_dbgfs_deregister(struct mei_device *dev) {}
|
|
#endif /* CONFIG_DEBUG_FS */
|
|
|
|
int mei_register(struct mei_device *dev, struct device *parent);
|
|
void mei_deregister(struct mei_device *dev);
|
|
|
|
#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d dma=%1d internal=%1d comp=%1d"
|
|
#define MEI_HDR_PRM(hdr) \
|
|
(hdr)->host_addr, (hdr)->me_addr, \
|
|
(hdr)->length, (hdr)->dma_ring, (hdr)->internal, (hdr)->msg_complete
|
|
|
|
ssize_t mei_fw_status2str(struct mei_fw_status *fw_sts, char *buf, size_t len);
|
|
/**
|
|
* mei_fw_status_str - fetch and convert fw status registers to printable string
|
|
*
|
|
* @dev: the device structure
|
|
* @buf: string buffer at minimal size MEI_FW_STATUS_STR_SZ
|
|
* @len: buffer len must be >= MEI_FW_STATUS_STR_SZ
|
|
*
|
|
* Return: number of bytes written or < 0 on failure
|
|
*/
|
|
static inline ssize_t mei_fw_status_str(struct mei_device *dev,
|
|
char *buf, size_t len)
|
|
{
|
|
struct mei_fw_status fw_status;
|
|
int ret;
|
|
|
|
buf[0] = '\0';
|
|
|
|
ret = mei_fw_status(dev, &fw_status);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mei_fw_status2str(&fw_status, buf, MEI_FW_STATUS_STR_SZ);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
#endif
|