1/*
2 * Copyright 2014 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23
24#include "kfd_kernel_queue.h"
25
26static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev,
27			enum kfd_queue_type type, unsigned int queue_size);
28static void uninitialize_vi(struct kernel_queue *kq);
29
30void kernel_queue_init_vi(struct kernel_queue_ops *ops)
31{
32	ops->initialize = initialize_vi;
33	ops->uninitialize = uninitialize_vi;
34}
35
36static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev,
37			enum kfd_queue_type type, unsigned int queue_size)
38{
39	int retval;
40
41	retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem);
42	if (retval != 0)
43		return false;
44
45	kq->eop_gpu_addr = kq->eop_mem->gpu_addr;
46	kq->eop_kernel_addr = kq->eop_mem->cpu_ptr;
47
48	memset(kq->eop_kernel_addr, 0, PAGE_SIZE);
49
50	return true;
51}
52
53static void uninitialize_vi(struct kernel_queue *kq)
54{
55	kfd_gtt_sa_free(kq->dev, kq->eop_mem);
56}
57