linux_kernel/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_cik.c

/*
 * Copyright 2014 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include "kfd_kernel_queue.h"

static bool initialize_cik(struct kernel_queue *kq, struct kfd_dev *dev,
			enum kfd_queue_type type, unsigned int queue_size);
static void uninitialize_cik(struct kernel_queue *kq);
static void submit_packet_cik(struct kernel_queue *kq);

void kernel_queue_init_cik(struct kernel_queue_ops *ops)
{
	ops->initialize = initialize_cik;
	ops->uninitialize = uninitialize_cik;
	ops->submit_packet = submit_packet_cik;
}

static bool initialize_cik(struct kernel_queue *kq, struct kfd_dev *dev,
			enum kfd_queue_type type, unsigned int queue_size)
{
	return true;
}

static void uninitialize_cik(struct kernel_queue *kq)
{
}

static void submit_packet_cik(struct kernel_queue *kq)
{
	*kq->wptr_kernel = kq->pending_wptr;
	write_kernel_doorbell(kq->queue->properties.doorbell_ptr,
				kq->pending_wptr);
}