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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * ISHTP bus definitions
- *
- * Copyright (c) 2014-2016, Intel Corporation.
- */
- #ifndef _LINUX_ISHTP_CL_BUS_H
- #define _LINUX_ISHTP_CL_BUS_H
- #include <linux/device.h>
- #include <linux/mod_devicetable.h>
- #include <linux/intel-ish-client-if.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);
- };
- 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,
- void *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);
- int ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const guid_t *cuuid);
- #endif /* _LINUX_ISHTP_CL_BUS_H */
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