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6898f0a5 BG |
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_vi(struct kernel_queue *kq, struct kfd_dev *dev, | |
27 | enum kfd_queue_type type, unsigned int queue_size); | |
28 | static void uninitialize_vi(struct kernel_queue *kq); | |
29 | ||
30 | void kernel_queue_init_vi(struct kernel_queue_ops *ops) | |
31 | { | |
32 | ops->initialize = initialize_vi; | |
33 | ops->uninitialize = uninitialize_vi; | |
34 | } | |
35 | ||
36 | static 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 | ||
53 | static void uninitialize_vi(struct kernel_queue *kq) | |
54 | { | |
55 | kfd_gtt_sa_free(kq->dev, kq->eop_mem); | |
56 | } |