linux/drivers/accel/ivpu/ivpu_ipc.c

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

#include <linux/genalloc.h>
#include <linux/highmem.h>
#include <linux/pm_runtime.h>
#include <linux/wait.h>

#include "ivpu_drv.h"
#include "ivpu_gem.h"
#include "ivpu_hw.h"
#include "ivpu_hw_reg_io.h"
#include "ivpu_ipc.h"
#include "ivpu_jsm_msg.h"
#include "ivpu_pm.h"

#define IPC_MAX_RX_MSG …

struct ivpu_ipc_tx_buf { … };

static void ivpu_ipc_msg_dump(struct ivpu_device *vdev, char *c,
			      struct ivpu_ipc_hdr *ipc_hdr, u32 vpu_addr)
{ … }

static void ivpu_jsm_msg_dump(struct ivpu_device *vdev, char *c,
			      struct vpu_jsm_msg *jsm_msg, u32 vpu_addr)
{ … }

static void
ivpu_ipc_rx_mark_free(struct ivpu_device *vdev, struct ivpu_ipc_hdr *ipc_hdr,
		      struct vpu_jsm_msg *jsm_msg)
{ … }

static void ivpu_ipc_mem_fini(struct ivpu_device *vdev)
{ … }

static int
ivpu_ipc_tx_prepare(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
		    struct vpu_jsm_msg *req)
{ … }

static void ivpu_ipc_tx_release(struct ivpu_device *vdev, u32 vpu_addr)
{ … }

static void ivpu_ipc_tx(struct ivpu_device *vdev, u32 vpu_addr)
{ … }

static void
ivpu_ipc_rx_msg_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
		    struct ivpu_ipc_hdr *ipc_hdr, struct vpu_jsm_msg *jsm_msg)
{ … }

static void
ivpu_ipc_rx_msg_del(struct ivpu_device *vdev, struct ivpu_ipc_rx_msg *rx_msg)
{ … }

void ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
			   u32 channel, ivpu_ipc_rx_callback_t rx_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)
{ … }

static bool ivpu_ipc_rx_need_wakeup(struct ivpu_ipc_consumer *cons)
{ … }

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)
{ … }

static int
ivpu_ipc_send_receive_internal(struct ivpu_device *vdev, struct vpu_jsm_msg *req,
			       enum vpu_ipc_msg_type expected_resp_type,
			       struct vpu_jsm_msg *resp, u32 channel,
			       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)
{ … }

static bool
ivpu_ipc_match_consumer(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
			struct ivpu_ipc_hdr *ipc_hdr, struct vpu_jsm_msg *jsm_msg)
{ … }

void ivpu_ipc_irq_handler(struct ivpu_device *vdev)
{ … }

void ivpu_ipc_irq_thread_handler(struct ivpu_device *vdev)
{ … }

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)
{ … }