linux/drivers/accel/ivpu/ivpu_ipc.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2020-2024 Intel Corporation
 */

#ifndef __IVPU_IPC_H__
#define __IVPU_IPC_H__

#include <linux/interrupt.h>
#include <linux/spinlock.h>

#include "vpu_jsm_api.h"

struct ivpu_bo;

/* VPU FW boot notification */
#define IVPU_IPC_CHAN_BOOT_MSG …
#define IVPU_IPC_BOOT_MSG_DATA_ADDR …

/* The alignment to be used for IPC Buffers and IPC Data. */
#define IVPU_IPC_ALIGNMENT …

#define IVPU_IPC_HDR_FREE …
#define IVPU_IPC_HDR_ALLOCATED …

/**
 * struct ivpu_ipc_hdr - The IPC message header structure, exchanged
 * with the VPU device firmware.
 * @data_addr: The VPU address of the payload (JSM message)
 * @data_size: The size of the payload.
 * @channel: The channel used.
 * @src_node: The Node ID of the sender.
 * @dst_node: The Node ID of the intended receiver.
 * @status: IPC buffer usage status
 */
struct ivpu_ipc_hdr { … } __packed __aligned(…);

ivpu_ipc_rx_callback_t;

struct ivpu_ipc_rx_msg { … };

struct ivpu_ipc_consumer { … };

struct ivpu_ipc_info { … };

int ivpu_ipc_init(struct ivpu_device *vdev);
void ivpu_ipc_fini(struct ivpu_device *vdev);

void ivpu_ipc_enable(struct ivpu_device *vdev);
void ivpu_ipc_disable(struct ivpu_device *vdev);
void ivpu_ipc_reset(struct ivpu_device *vdev);

void ivpu_ipc_irq_handler(struct ivpu_device *vdev);
void ivpu_ipc_irq_thread_handler(struct ivpu_device *vdev);

void ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
			   u32 channel, ivpu_ipc_rx_callback_t callback);
void ivpu_ipc_consumer_del(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons);

int ivpu_ipc_send(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
		  struct vpu_jsm_msg *req);
int ivpu_ipc_receive(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
		     struct ivpu_ipc_hdr *ipc_buf, struct vpu_jsm_msg *jsm_msg,
		     unsigned long timeout_ms);

int ivpu_ipc_send_receive_active(struct ivpu_device *vdev, struct vpu_jsm_msg *req,
				 enum vpu_ipc_msg_type expected_resp, struct vpu_jsm_msg *resp,
				 u32 channel, unsigned long timeout_ms);
int ivpu_ipc_send_receive(struct ivpu_device *vdev, struct vpu_jsm_msg *req,
			  enum vpu_ipc_msg_type expected_resp, struct vpu_jsm_msg *resp,
			  u32 channel, unsigned long timeout_ms);

#endif /* __IVPU_IPC_H__ */