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intel-ish-client-if.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * Intel ISH client Interface definitions * * Copyright (c) 2019, Intel Corporation. */ #ifndef _INTEL_ISH_CLIENT_IF_H_ #define _INTEL_ISH_CLIENT_IF_H_ #include <linux/device.h> #include <linux/uuid.h> struct ishtp_cl_device; struct ishtp_device; struct ishtp_cl; struct ishtp_fw_client; typedef __printf(2, 3) void (*ishtp_print_log)(struct ishtp_device *dev, const char *format, ...); /* Client state */ enum cl_state { ISHTP_CL_INITIALIZING = 0, ISHTP_CL_CONNECTING, ISHTP_CL_CONNECTED, ISHTP_CL_DISCONNECTING, ISHTP_CL_DISCONNECTED }; /** * 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; const guid_t *guid; int (*probe)(struct ishtp_cl_device *dev); void (*remove)(struct ishtp_cl_device *dev); int (*reset)(struct ishtp_cl_device *dev); const struct dev_pm_ops *pm; }; /** * struct ishtp_msg_data - ISHTP message data struct * @size: Size of data in the *data * @data: Pointer to data */ struct ishtp_msg_data { uint32_t size; unsigned char *data; }; /* * struct ishtp_cl_rb - request block structure * @list: Link to list members * @cl: ISHTP client instance * @buffer: message header * @buf_idx: Index into buffer * @read_time: unused at this time */ struct ishtp_cl_rb { struct list_head list; struct ishtp_cl *cl; struct ishtp_msg_data buffer; unsigned long buf_idx; unsigned long read_time; }; int ishtp_cl_driver_register(struct ishtp_cl_driver *driver, struct module *owner); 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 *)); /* Get the device * from ishtp device instance */ struct device *ishtp_device(struct ishtp_cl_device *cl_device); /* wait for IPC resume */ bool ishtp_wait_resume(struct ishtp_device *dev); /* Trace interface for clients */ ishtp_print_log ishtp_trace_callback(struct ishtp_cl_device *cl_device); /* Get device pointer of PCI device for DMA acces */ struct device *ishtp_get_pci_device(struct ishtp_cl_device *cl_device); struct ishtp_cl *ishtp_cl_allocate(struct ishtp_cl_device *cl_device); void ishtp_cl_free(struct ishtp_cl *cl); int ishtp_cl_link(struct ishtp_cl *cl); void ishtp_cl_unlink(struct ishtp_cl *cl); int ishtp_cl_disconnect(struct ishtp_cl *cl); int ishtp_cl_connect(struct ishtp_cl *cl); int ishtp_cl_send(struct ishtp_cl *cl, uint8_t *buf, size_t length); int ishtp_cl_flush_queues(struct ishtp_cl *cl); int ishtp_cl_io_rb_recycle(struct ishtp_cl_rb *rb); bool ishtp_cl_tx_empty(struct ishtp_cl *cl); struct ishtp_cl_rb *ishtp_cl_rx_get_rb(struct ishtp_cl *cl); void *ishtp_get_client_data(struct ishtp_cl *cl); void ishtp_set_client_data(struct ishtp_cl *cl, void *data); struct ishtp_device *ishtp_get_ishtp_device(struct ishtp_cl *cl); void ishtp_set_tx_ring_size(struct ishtp_cl *cl, int size); void ishtp_set_rx_ring_size(struct ishtp_cl *cl, int size); void ishtp_set_connection_state(struct ishtp_cl *cl, int state); void ishtp_cl_set_fw_client_id(struct ishtp_cl *cl, int fw_client_id); void ishtp_put_device(struct ishtp_cl_device *cl_dev); void ishtp_get_device(struct ishtp_cl_device *cl_dev); void ishtp_set_drvdata(struct ishtp_cl_device *cl_device, void *data); void *ishtp_get_drvdata(struct ishtp_cl_device *cl_device); struct ishtp_cl_device *ishtp_dev_to_cl_device(struct device *dev); int ishtp_register_event_cb(struct ishtp_cl_device *device, void (*read_cb)(struct ishtp_cl_device *)); struct ishtp_fw_client *ishtp_fw_cl_get_client(struct ishtp_device *dev, const guid_t *uuid); int ishtp_get_fw_client_id(struct ishtp_fw_client *fw_client); int ish_hw_reset(struct ishtp_device *dev); #endif /* _INTEL_ISH_CLIENT_IF_H_ */