Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/*
3 * Copyright 2009 VMware, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors: Michel Dänzer
24 */
25
26#include <drm/amdgpu_drm.h>
27#include "amdgpu.h"
28#include "amdgpu_uvd.h"
29#include "amdgpu_vce.h"
30
31/* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
32static void amdgpu_do_test_moves(struct amdgpu_device *adev)
33{
34 struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
35 struct amdgpu_bo *vram_obj = NULL;
36 struct amdgpu_bo **gtt_obj = NULL;
37 struct amdgpu_bo_param bp;
38 uint64_t gart_addr, vram_addr;
39 unsigned n, size;
40 int i, r;
41
42 size = 1024 * 1024;
43
44 /* Number of tests =
45 * (Total GTT - gart_pin_size - (2 transfer windows for buffer moves)) / test size
46 */
47 n = adev->gmc.gart_size - atomic64_read(&adev->gart_pin_size);
48 n -= AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS *
49 AMDGPU_GPU_PAGE_SIZE;
50 n /= size;
51
52 gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL);
53 if (!gtt_obj) {
54 DRM_ERROR("Failed to allocate %d pointers\n", n);
55 r = 1;
56 goto out_cleanup;
57 }
58 memset(&bp, 0, sizeof(bp));
59 bp.size = size;
60 bp.byte_align = PAGE_SIZE;
61 bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
62 bp.flags = 0;
63 bp.type = ttm_bo_type_kernel;
64 bp.resv = NULL;
65 bp.bo_ptr_size = sizeof(struct amdgpu_bo);
66
67 r = amdgpu_bo_create(adev, &bp, &vram_obj);
68 if (r) {
69 DRM_ERROR("Failed to create VRAM object\n");
70 goto out_cleanup;
71 }
72 r = amdgpu_bo_reserve(vram_obj, false);
73 if (unlikely(r != 0))
74 goto out_unref;
75 r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM);
76 if (r) {
77 DRM_ERROR("Failed to pin VRAM object\n");
78 goto out_unres;
79 }
80 vram_addr = amdgpu_bo_gpu_offset(vram_obj);
81 for (i = 0; i < n; i++) {
82 void *gtt_map, *vram_map;
83 void **gart_start, **gart_end;
84 void **vram_start, **vram_end;
85 struct dma_fence *fence = NULL;
86
87 bp.domain = AMDGPU_GEM_DOMAIN_GTT;
88 r = amdgpu_bo_create(adev, &bp, gtt_obj + i);
89 if (r) {
90 DRM_ERROR("Failed to create GTT object %d\n", i);
91 goto out_lclean;
92 }
93
94 r = amdgpu_bo_reserve(gtt_obj[i], false);
95 if (unlikely(r != 0))
96 goto out_lclean_unref;
97 r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT);
98 if (r) {
99 DRM_ERROR("Failed to pin GTT object %d\n", i);
100 goto out_lclean_unres;
101 }
102 r = amdgpu_ttm_alloc_gart(>t_obj[i]->tbo);
103 if (r) {
104 DRM_ERROR("%p bind failed\n", gtt_obj[i]);
105 goto out_lclean_unpin;
106 }
107 gart_addr = amdgpu_bo_gpu_offset(gtt_obj[i]);
108
109 r = amdgpu_bo_kmap(gtt_obj[i], >t_map);
110 if (r) {
111 DRM_ERROR("Failed to map GTT object %d\n", i);
112 goto out_lclean_unpin;
113 }
114
115 for (gart_start = gtt_map, gart_end = gtt_map + size;
116 gart_start < gart_end;
117 gart_start++)
118 *gart_start = gart_start;
119
120 amdgpu_bo_kunmap(gtt_obj[i]);
121
122 r = amdgpu_copy_buffer(ring, gart_addr, vram_addr,
123 size, NULL, &fence, false, false, false);
124
125 if (r) {
126 DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
127 goto out_lclean_unpin;
128 }
129
130 r = dma_fence_wait(fence, false);
131 if (r) {
132 DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
133 goto out_lclean_unpin;
134 }
135
136 dma_fence_put(fence);
137 fence = NULL;
138
139 r = amdgpu_bo_kmap(vram_obj, &vram_map);
140 if (r) {
141 DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
142 goto out_lclean_unpin;
143 }
144
145 for (gart_start = gtt_map, gart_end = gtt_map + size,
146 vram_start = vram_map, vram_end = vram_map + size;
147 vram_start < vram_end;
148 gart_start++, vram_start++) {
149 if (*vram_start != gart_start) {
150 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
151 "expected 0x%p (GTT/VRAM offset "
152 "0x%16llx/0x%16llx)\n",
153 i, *vram_start, gart_start,
154 (unsigned long long)
155 (gart_addr - adev->gmc.gart_start +
156 (void *)gart_start - gtt_map),
157 (unsigned long long)
158 (vram_addr - adev->gmc.vram_start +
159 (void *)gart_start - gtt_map));
160 amdgpu_bo_kunmap(vram_obj);
161 goto out_lclean_unpin;
162 }
163 *vram_start = vram_start;
164 }
165
166 amdgpu_bo_kunmap(vram_obj);
167
168 r = amdgpu_copy_buffer(ring, vram_addr, gart_addr,
169 size, NULL, &fence, false, false, false);
170
171 if (r) {
172 DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
173 goto out_lclean_unpin;
174 }
175
176 r = dma_fence_wait(fence, false);
177 if (r) {
178 DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
179 goto out_lclean_unpin;
180 }
181
182 dma_fence_put(fence);
183 fence = NULL;
184
185 r = amdgpu_bo_kmap(gtt_obj[i], >t_map);
186 if (r) {
187 DRM_ERROR("Failed to map GTT object after copy %d\n", i);
188 goto out_lclean_unpin;
189 }
190
191 for (gart_start = gtt_map, gart_end = gtt_map + size,
192 vram_start = vram_map, vram_end = vram_map + size;
193 gart_start < gart_end;
194 gart_start++, vram_start++) {
195 if (*gart_start != vram_start) {
196 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
197 "expected 0x%p (VRAM/GTT offset "
198 "0x%16llx/0x%16llx)\n",
199 i, *gart_start, vram_start,
200 (unsigned long long)
201 (vram_addr - adev->gmc.vram_start +
202 (void *)vram_start - vram_map),
203 (unsigned long long)
204 (gart_addr - adev->gmc.gart_start +
205 (void *)vram_start - vram_map));
206 amdgpu_bo_kunmap(gtt_obj[i]);
207 goto out_lclean_unpin;
208 }
209 }
210
211 amdgpu_bo_kunmap(gtt_obj[i]);
212
213 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
214 gart_addr - adev->gmc.gart_start);
215 continue;
216
217out_lclean_unpin:
218 amdgpu_bo_unpin(gtt_obj[i]);
219out_lclean_unres:
220 amdgpu_bo_unreserve(gtt_obj[i]);
221out_lclean_unref:
222 amdgpu_bo_unref(>t_obj[i]);
223out_lclean:
224 for (--i; i >= 0; --i) {
225 amdgpu_bo_unpin(gtt_obj[i]);
226 amdgpu_bo_unreserve(gtt_obj[i]);
227 amdgpu_bo_unref(>t_obj[i]);
228 }
229 if (fence)
230 dma_fence_put(fence);
231 break;
232 }
233
234 amdgpu_bo_unpin(vram_obj);
235out_unres:
236 amdgpu_bo_unreserve(vram_obj);
237out_unref:
238 amdgpu_bo_unref(&vram_obj);
239out_cleanup:
240 kfree(gtt_obj);
241 if (r) {
242 pr_warn("Error while testing BO move\n");
243 }
244}
245
246void amdgpu_test_moves(struct amdgpu_device *adev)
247{
248 if (adev->mman.buffer_funcs)
249 amdgpu_do_test_moves(adev);
250}