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