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
26 static bool initialize_cik(struct kernel_queue *kq, struct kfd_dev *dev,
27 enum kfd_queue_type type, unsigned int queue_size);
28 static void uninitialize_cik(struct kernel_queue *kq);
29 static void submit_packet_cik(struct kernel_queue *kq);
30
31 void kernel_queue_init_cik(struct kernel_queue_ops *ops)
32 {
33 ops->initialize = initialize_cik;
34 ops->uninitialize = uninitialize_cik;
35 ops->submit_packet = submit_packet_cik;
36 }
37
38 static bool initialize_cik(struct kernel_queue *kq, struct kfd_dev *dev,
39 enum kfd_queue_type type, unsigned int queue_size)
40 {
41 return true;
42 }
43
44 static void uninitialize_cik(struct kernel_queue *kq)
45 {
46 }
47
48 static void submit_packet_cik(struct kernel_queue *kq)
49 {
50 *kq->wptr_kernel = kq->pending_wptr;
51 write_kernel_doorbell(kq->queue->properties.doorbell_ptr,
52 kq->pending_wptr);
53 }