115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
|
/*
|
||
|
|
* ISHTP bus definitions
|
||
|
|
*
|
||
|
|
* Copyright (c) 2014-2016, Intel Corporation.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms and conditions of the GNU General Public License,
|
||
|
|
* version 2, as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||
|
|
* more details.
|
||
|
|
*/
|
||
|
|
#ifndef _LINUX_ISHTP_CL_BUS_H
|
||
|
|
#define _LINUX_ISHTP_CL_BUS_H
|
||
|
|
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/mod_devicetable.h>
|
||
|
|
|
||
|
|
struct ishtp_cl;
|
||
|
|
struct ishtp_cl_device;
|
||
|
|
struct ishtp_device;
|
||
|
|
struct ishtp_msg_hdr;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct ishtp_cl_device - ISHTP device handle
|
||
|
|
* @dev: device pointer
|
||
|
|
* @ishtp_dev: pointer to ishtp device structure to primarily to access
|
||
|
|
* hw device operation callbacks and properties
|
||
|
|
* @fw_client: fw_client pointer to get fw information like protocol name
|
||
|
|
* max message length etc.
|
||
|
|
* @device_link: Link to next client in the list on a bus
|
||
|
|
* @event_work: Used to schedule rx event for client
|
||
|
|
* @driver_data: Storage driver private data
|
||
|
|
* @reference_count: Used for get/put device
|
||
|
|
* @event_cb: Callback to driver to send events
|
||
|
|
*
|
||
|
|
* An ishtp_cl_device pointer is returned from ishtp_add_device()
|
||
|
|
* and links ISHTP bus clients to their actual host client pointer.
|
||
|
|
* Drivers for ISHTP devices will get an ishtp_cl_device pointer
|
||
|
|
* when being probed and shall use it for doing bus I/O.
|
||
|
|
*/
|
||
|
|
struct ishtp_cl_device {
|
||
|
|
struct device dev;
|
||
|
|
struct ishtp_device *ishtp_dev;
|
||
|
|
struct ishtp_fw_client *fw_client;
|
||
|
|
struct list_head device_link;
|
||
|
|
struct work_struct event_work;
|
||
|
|
void *driver_data;
|
||
|
|
int reference_count;
|
||
|
|
void (*event_cb)(struct ishtp_cl_device *device);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct ishtp_cl_device - ISHTP device handle
|
||
|
|
* @driver: driver instance on a bus
|
||
|
|
* @name: Name of the device for probe
|
||
|
|
* @probe: driver callback for device probe
|
||
|
|
* @remove: driver callback on device removal
|
||
|
|
*
|
||
|
|
* Client drivers defines to get probed/removed for ISHTP client device.
|
||
|
|
*/
|
||
|
|
struct ishtp_cl_driver {
|
||
|
|
struct device_driver driver;
|
||
|
|
const char *name;
|
||
|
|
int (*probe)(struct ishtp_cl_device *dev);
|
||
|
|
int (*remove)(struct ishtp_cl_device *dev);
|
||
|
|
int (*reset)(struct ishtp_cl_device *dev);
|
||
|
|
const struct dev_pm_ops *pm;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
int ishtp_bus_new_client(struct ishtp_device *dev);
|
||
|
|
void ishtp_remove_all_clients(struct ishtp_device *dev);
|
||
|
|
int ishtp_cl_device_bind(struct ishtp_cl *cl);
|
||
|
|
void ishtp_cl_bus_rx_event(struct ishtp_cl_device *device);
|
||
|
|
|
||
|
|
/* Write a multi-fragment message */
|
||
|
|
int ishtp_send_msg(struct ishtp_device *dev,
|
||
|
|
struct ishtp_msg_hdr *hdr, void *msg,
|
||
|
|
void (*ipc_send_compl)(void *),
|
||
|
|
void *ipc_send_compl_prm);
|
||
|
|
|
||
|
|
/* Write a single-fragment message */
|
||
|
|
int ishtp_write_message(struct ishtp_device *dev,
|
||
|
|
struct ishtp_msg_hdr *hdr,
|
||
|
|
unsigned char *buf);
|
||
|
|
|
||
|
|
/* Use DMA to send/receive messages */
|
||
|
|
int ishtp_use_dma_transfer(void);
|
||
|
|
|
||
|
|
/* Exported functions */
|
||
|
|
void ishtp_bus_remove_all_clients(struct ishtp_device *ishtp_dev,
|
||
|
|
bool warm_reset);
|
||
|
|
|
||
|
|
void ishtp_recv(struct ishtp_device *dev);
|
||
|
|
void ishtp_reset_handler(struct ishtp_device *dev);
|
||
|
|
void ishtp_reset_compl_handler(struct ishtp_device *dev);
|
||
|
|
|
||
|
|
void ishtp_put_device(struct ishtp_cl_device *);
|
||
|
|
void ishtp_get_device(struct ishtp_cl_device *);
|
||
|
|
|
||
|
|
int __ishtp_cl_driver_register(struct ishtp_cl_driver *driver,
|
||
|
|
struct module *owner);
|
||
|
|
#define ishtp_cl_driver_register(driver) \
|
||
|
|
__ishtp_cl_driver_register(driver, THIS_MODULE)
|
||
|
|
void ishtp_cl_driver_unregister(struct ishtp_cl_driver *driver);
|
||
|
|
|
||
|
|
int ishtp_register_event_cb(struct ishtp_cl_device *device,
|
||
|
|
void (*read_cb)(struct ishtp_cl_device *));
|
||
|
|
int ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const uuid_le *cuuid);
|
||
|
|
|
||
|
|
#endif /* _LINUX_ISHTP_CL_BUS_H */
|