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 - IB pool - writeback page - ring buffers) / test size
46 */
47 n = adev->gmc.gart_size - AMDGPU_IB_POOL_SIZE*64*1024;
48 for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
49 if (adev->rings[i])
50 n -= adev->rings[i]->ring_size;
51 if (adev->wb.wb_obj)
52 n -= AMDGPU_GPU_PAGE_SIZE;
53 if (adev->irq.ih.ring_obj)
54 n -= adev->irq.ih.ring_size;
55 n /= size;
56
57 gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL);
58 if (!gtt_obj) {
59 DRM_ERROR("Failed to allocate %d pointers\n", n);
60 r = 1;
61 goto out_cleanup;
62 }
63 memset(&bp, 0, sizeof(bp));
64 bp.size = size;
65 bp.byte_align = PAGE_SIZE;
66 bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
67 bp.flags = 0;
68 bp.type = ttm_bo_type_kernel;
69 bp.resv = NULL;
70
71 r = amdgpu_bo_create(adev, &bp, &vram_obj);
72 if (r) {
73 DRM_ERROR("Failed to create VRAM object\n");
74 goto out_cleanup;
75 }
76 r = amdgpu_bo_reserve(vram_obj, false);
77 if (unlikely(r != 0))
78 goto out_unref;
79 r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM);
80 if (r) {
81 DRM_ERROR("Failed to pin VRAM object\n");
82 goto out_unres;
83 }
84 vram_addr = amdgpu_bo_gpu_offset(vram_obj);
85 for (i = 0; i < n; i++) {
86 void *gtt_map, *vram_map;
87 void **gart_start, **gart_end;
88 void **vram_start, **vram_end;
89 struct dma_fence *fence = NULL;
90
91 bp.domain = AMDGPU_GEM_DOMAIN_GTT;
92 r = amdgpu_bo_create(adev, &bp, gtt_obj + i);
93 if (r) {
94 DRM_ERROR("Failed to create GTT object %d\n", i);
95 goto out_lclean;
96 }
97
98 r = amdgpu_bo_reserve(gtt_obj[i], false);
99 if (unlikely(r != 0))
100 goto out_lclean_unref;
101 r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT);
102 if (r) {
103 DRM_ERROR("Failed to pin GTT object %d\n", i);
104 goto out_lclean_unres;
105 }
106 r = amdgpu_ttm_alloc_gart(>t_obj[i]->tbo);
107 if (r) {
108 DRM_ERROR("%p bind failed\n", gtt_obj[i]);
109 goto out_lclean_unpin;
110 }
111 gart_addr = amdgpu_bo_gpu_offset(gtt_obj[i]);
112
113 r = amdgpu_bo_kmap(gtt_obj[i], >t_map);
114 if (r) {
115 DRM_ERROR("Failed to map GTT object %d\n", i);
116 goto out_lclean_unpin;
117 }
118
119 for (gart_start = gtt_map, gart_end = gtt_map + size;
120 gart_start < gart_end;
121 gart_start++)
122 *gart_start = gart_start;
123
124 amdgpu_bo_kunmap(gtt_obj[i]);
125
126 r = amdgpu_copy_buffer(ring, gart_addr, vram_addr,
127 size, NULL, &fence, false, false);
128
129 if (r) {
130 DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
131 goto out_lclean_unpin;
132 }
133
134 r = dma_fence_wait(fence, false);
135 if (r) {
136 DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
137 goto out_lclean_unpin;
138 }
139
140 dma_fence_put(fence);
141
142 r = amdgpu_bo_kmap(vram_obj, &vram_map);
143 if (r) {
144 DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
145 goto out_lclean_unpin;
146 }
147
148 for (gart_start = gtt_map, gart_end = gtt_map + size,
149 vram_start = vram_map, vram_end = vram_map + size;
150 vram_start < vram_end;
151 gart_start++, vram_start++) {
152 if (*vram_start != gart_start) {
153 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
154 "expected 0x%p (GTT/VRAM offset "
155 "0x%16llx/0x%16llx)\n",
156 i, *vram_start, gart_start,
157 (unsigned long long)
158 (gart_addr - adev->gmc.gart_start +
159 (void*)gart_start - gtt_map),
160 (unsigned long long)
161 (vram_addr - adev->gmc.vram_start +
162 (void*)gart_start - gtt_map));
163 amdgpu_bo_kunmap(vram_obj);
164 goto out_lclean_unpin;
165 }
166 *vram_start = vram_start;
167 }
168
169 amdgpu_bo_kunmap(vram_obj);
170
171 r = amdgpu_copy_buffer(ring, vram_addr, gart_addr,
172 size, NULL, &fence, false, false);
173
174 if (r) {
175 DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
176 goto out_lclean_unpin;
177 }
178
179 r = dma_fence_wait(fence, false);
180 if (r) {
181 DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
182 goto out_lclean_unpin;
183 }
184
185 dma_fence_put(fence);
186
187 r = amdgpu_bo_kmap(gtt_obj[i], >t_map);
188 if (r) {
189 DRM_ERROR("Failed to map GTT object after copy %d\n", i);
190 goto out_lclean_unpin;
191 }
192
193 for (gart_start = gtt_map, gart_end = gtt_map + size,
194 vram_start = vram_map, vram_end = vram_map + size;
195 gart_start < gart_end;
196 gart_start++, vram_start++) {
197 if (*gart_start != vram_start) {
198 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
199 "expected 0x%p (VRAM/GTT offset "
200 "0x%16llx/0x%16llx)\n",
201 i, *gart_start, vram_start,
202 (unsigned long long)
203 (vram_addr - adev->gmc.vram_start +
204 (void*)vram_start - vram_map),
205 (unsigned long long)
206 (gart_addr - adev->gmc.gart_start +
207 (void*)vram_start - vram_map));
208 amdgpu_bo_kunmap(gtt_obj[i]);
209 goto out_lclean_unpin;
210 }
211 }
212
213 amdgpu_bo_kunmap(gtt_obj[i]);
214
215 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
216 gart_addr - adev->gmc.gart_start);
217 continue;
218
219out_lclean_unpin:
220 amdgpu_bo_unpin(gtt_obj[i]);
221out_lclean_unres:
222 amdgpu_bo_unreserve(gtt_obj[i]);
223out_lclean_unref:
224 amdgpu_bo_unref(>t_obj[i]);
225out_lclean:
226 for (--i; i >= 0; --i) {
227 amdgpu_bo_unpin(gtt_obj[i]);
228 amdgpu_bo_unreserve(gtt_obj[i]);
229 amdgpu_bo_unref(>t_obj[i]);
230 }
231 if (fence)
232 dma_fence_put(fence);
233 break;
234 }
235
236 amdgpu_bo_unpin(vram_obj);
237out_unres:
238 amdgpu_bo_unreserve(vram_obj);
239out_unref:
240 amdgpu_bo_unref(&vram_obj);
241out_cleanup:
242 kfree(gtt_obj);
243 if (r) {
244 pr_warn("Error while testing BO move\n");
245 }
246}
247
248void amdgpu_test_moves(struct amdgpu_device *adev)
249{
250 if (adev->mman.buffer_funcs)
251 amdgpu_do_test_moves(adev);
252}