138 lines
4.6 KiB
C
138 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2013-2016, Intel Corporation. All rights reserved.
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*/
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#ifndef _LINUX_MEI_CL_BUS_H
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#define _LINUX_MEI_CL_BUS_H
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#include <linux/device.h>
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#include <linux/uuid.h>
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#include <linux/mod_devicetable.h>
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struct mei_cl_device;
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struct mei_device;
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struct scatterlist;
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typedef void (*mei_cldev_cb_t)(struct mei_cl_device *cldev);
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/**
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* struct mei_cl_device - MEI device handle
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* An mei_cl_device pointer is returned from mei_add_device()
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* and links MEI bus clients to their actual ME host client pointer.
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* Drivers for MEI devices will get an mei_cl_device pointer
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* when being probed and shall use it for doing ME bus I/O.
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*
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* @bus_list: device on the bus list
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* @bus: parent mei device
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* @dev: linux driver model device pointer
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* @me_cl: me client
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* @cl: mei client
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* @name: device name
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* @rx_work: async work to execute Rx event callback
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* @rx_cb: Drivers register this callback to get asynchronous ME
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* Rx buffer pending notifications.
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* @notif_work: async work to execute FW notify event callback
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* @notif_cb: Drivers register this callback to get asynchronous ME
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* FW notification pending notifications.
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*
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* @do_match: whether the device can be matched with a driver
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* @is_added: device is already scanned
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* @priv_data: client private data
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*/
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struct mei_cl_device {
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struct list_head bus_list;
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struct mei_device *bus;
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struct device dev;
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struct mei_me_client *me_cl;
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struct mei_cl *cl;
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char name[MEI_CL_NAME_SIZE];
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struct work_struct rx_work;
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mei_cldev_cb_t rx_cb;
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struct work_struct notif_work;
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mei_cldev_cb_t notif_cb;
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unsigned int do_match:1;
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unsigned int is_added:1;
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void *priv_data;
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};
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#define to_mei_cl_device(d) container_of(d, struct mei_cl_device, dev)
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struct mei_cl_driver {
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struct device_driver driver;
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const char *name;
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const struct mei_cl_device_id *id_table;
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int (*probe)(struct mei_cl_device *cldev,
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const struct mei_cl_device_id *id);
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void (*remove)(struct mei_cl_device *cldev);
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};
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int __mei_cldev_driver_register(struct mei_cl_driver *cldrv,
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struct module *owner);
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#define mei_cldev_driver_register(cldrv) \
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__mei_cldev_driver_register(cldrv, THIS_MODULE)
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void mei_cldev_driver_unregister(struct mei_cl_driver *cldrv);
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/**
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* module_mei_cl_driver - Helper macro for registering mei cl driver
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*
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* @__mei_cldrv: mei_cl_driver structure
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*
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* Helper macro for mei cl drivers which do not do anything special in module
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* init/exit, for eliminating a boilerplate code.
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*/
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#define module_mei_cl_driver(__mei_cldrv) \
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module_driver(__mei_cldrv, \
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mei_cldev_driver_register,\
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mei_cldev_driver_unregister)
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ssize_t mei_cldev_send(struct mei_cl_device *cldev, const u8 *buf,
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size_t length);
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ssize_t mei_cldev_send_timeout(struct mei_cl_device *cldev, const u8 *buf,
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size_t length, unsigned long timeout);
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ssize_t mei_cldev_recv(struct mei_cl_device *cldev, u8 *buf, size_t length);
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ssize_t mei_cldev_recv_nonblock(struct mei_cl_device *cldev, u8 *buf,
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size_t length);
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ssize_t mei_cldev_recv_timeout(struct mei_cl_device *cldev, u8 *buf, size_t length,
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unsigned long timeout);
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ssize_t mei_cldev_send_vtag(struct mei_cl_device *cldev, const u8 *buf,
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size_t length, u8 vtag);
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ssize_t mei_cldev_send_vtag_timeout(struct mei_cl_device *cldev, const u8 *buf,
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size_t length, u8 vtag, unsigned long timeout);
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ssize_t mei_cldev_recv_vtag(struct mei_cl_device *cldev, u8 *buf, size_t length,
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u8 *vtag);
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ssize_t mei_cldev_recv_nonblock_vtag(struct mei_cl_device *cldev, u8 *buf,
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size_t length, u8 *vtag);
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ssize_t mei_cldev_recv_vtag_timeout(struct mei_cl_device *cldev, u8 *buf, size_t length,
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u8 *vtag, unsigned long timeout);
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int mei_cldev_register_rx_cb(struct mei_cl_device *cldev, mei_cldev_cb_t rx_cb);
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int mei_cldev_register_notif_cb(struct mei_cl_device *cldev,
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mei_cldev_cb_t notif_cb);
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const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev);
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u8 mei_cldev_ver(const struct mei_cl_device *cldev);
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void *mei_cldev_get_drvdata(const struct mei_cl_device *cldev);
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void mei_cldev_set_drvdata(struct mei_cl_device *cldev, void *data);
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int mei_cldev_enable(struct mei_cl_device *cldev);
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int mei_cldev_disable(struct mei_cl_device *cldev);
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bool mei_cldev_enabled(const struct mei_cl_device *cldev);
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ssize_t mei_cldev_send_gsc_command(struct mei_cl_device *cldev,
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u8 client_id, u32 fence_id,
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struct scatterlist *sg_in,
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size_t total_in_len,
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struct scatterlist *sg_out);
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void *mei_cldev_dma_map(struct mei_cl_device *cldev, u8 buffer_id, size_t size);
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int mei_cldev_dma_unmap(struct mei_cl_device *cldev);
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#endif /* _LINUX_MEI_CL_BUS_H */
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