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2025cf9e19
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 263 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* ISHTP bus definitions
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*
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* Copyright (c) 2014-2016, Intel Corporation.
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*/
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#ifndef _LINUX_ISHTP_CL_BUS_H
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#define _LINUX_ISHTP_CL_BUS_H
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#include <linux/device.h>
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#include <linux/mod_devicetable.h>
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#include <linux/intel-ish-client-if.h>
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struct ishtp_cl;
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struct ishtp_cl_device;
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struct ishtp_device;
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struct ishtp_msg_hdr;
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/**
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* struct ishtp_cl_device - ISHTP device handle
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* @dev: device pointer
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* @ishtp_dev: pointer to ishtp device structure to primarily to access
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* hw device operation callbacks and properties
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* @fw_client: fw_client pointer to get fw information like protocol name
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* max message length etc.
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* @device_link: Link to next client in the list on a bus
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* @event_work: Used to schedule rx event for client
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* @driver_data: Storage driver private data
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* @reference_count: Used for get/put device
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* @event_cb: Callback to driver to send events
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*
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* An ishtp_cl_device pointer is returned from ishtp_add_device()
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* and links ISHTP bus clients to their actual host client pointer.
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* Drivers for ISHTP devices will get an ishtp_cl_device pointer
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* when being probed and shall use it for doing bus I/O.
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*/
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struct ishtp_cl_device {
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struct device dev;
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struct ishtp_device *ishtp_dev;
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struct ishtp_fw_client *fw_client;
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struct list_head device_link;
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struct work_struct event_work;
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void *driver_data;
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int reference_count;
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void (*event_cb)(struct ishtp_cl_device *device);
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};
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int ishtp_bus_new_client(struct ishtp_device *dev);
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void ishtp_remove_all_clients(struct ishtp_device *dev);
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int ishtp_cl_device_bind(struct ishtp_cl *cl);
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void ishtp_cl_bus_rx_event(struct ishtp_cl_device *device);
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/* Write a multi-fragment message */
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int ishtp_send_msg(struct ishtp_device *dev,
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struct ishtp_msg_hdr *hdr, void *msg,
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void (*ipc_send_compl)(void *),
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void *ipc_send_compl_prm);
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/* Write a single-fragment message */
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int ishtp_write_message(struct ishtp_device *dev,
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struct ishtp_msg_hdr *hdr,
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void *buf);
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/* Use DMA to send/receive messages */
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int ishtp_use_dma_transfer(void);
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/* Exported functions */
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void ishtp_bus_remove_all_clients(struct ishtp_device *ishtp_dev,
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bool warm_reset);
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void ishtp_recv(struct ishtp_device *dev);
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void ishtp_reset_handler(struct ishtp_device *dev);
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void ishtp_reset_compl_handler(struct ishtp_device *dev);
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int ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const guid_t *cuuid);
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#endif /* _LINUX_ISHTP_CL_BUS_H */
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