Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / drivers / gpu / drm / radeon / radeon_test.c
1 /*
2  * Copyright 2009 VMware, 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  * Authors: Michel Dänzer
23  */
24 #include <drm/drmP.h>
25 #include <drm/radeon_drm.h>
26 #include "radeon_reg.h"
27 #include "radeon.h"
28
29
30 /* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
31 void radeon_test_moves(struct radeon_device *rdev)
32 {
33         struct radeon_bo *vram_obj = NULL;
34         struct radeon_bo **gtt_obj = NULL;
35         struct radeon_fence *fence = NULL;
36         uint64_t gtt_addr, vram_addr;
37         unsigned i, n, size;
38         int r;
39
40         size = 1024 * 1024;
41
42         /* Number of tests =
43          * (Total GTT - IB pool - writeback page - ring buffer) / test size
44          */
45         n = ((u32)(rdev->mc.gtt_size - RADEON_IB_POOL_SIZE*64*1024 - RADEON_GPU_PAGE_SIZE -
46              rdev->cp.ring_size)) / size;
47
48         gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
49         if (!gtt_obj) {
50                 DRM_ERROR("Failed to allocate %d pointers\n", n);
51                 r = 1;
52                 goto out_cleanup;
53         }
54
55         r = radeon_bo_create(rdev, NULL, size, true, RADEON_GEM_DOMAIN_VRAM,
56                                 &vram_obj);
57         if (r) {
58                 DRM_ERROR("Failed to create VRAM object\n");
59                 goto out_cleanup;
60         }
61         r = radeon_bo_reserve(vram_obj, false);
62         if (unlikely(r != 0))
63                 goto out_cleanup;
64         r = radeon_bo_pin(vram_obj, RADEON_GEM_DOMAIN_VRAM, &vram_addr);
65         if (r) {
66                 DRM_ERROR("Failed to pin VRAM object\n");
67                 goto out_cleanup;
68         }
69         for (i = 0; i < n; i++) {
70                 void *gtt_map, *vram_map;
71                 void **gtt_start, **gtt_end;
72                 void **vram_start, **vram_end;
73
74                 r = radeon_bo_create(rdev, NULL, size, true,
75                                          RADEON_GEM_DOMAIN_GTT, gtt_obj + i);
76                 if (r) {
77                         DRM_ERROR("Failed to create GTT object %d\n", i);
78                         goto out_cleanup;
79                 }
80
81                 r = radeon_bo_reserve(gtt_obj[i], false);
82                 if (unlikely(r != 0))
83                         goto out_cleanup;
84                 r = radeon_bo_pin(gtt_obj[i], RADEON_GEM_DOMAIN_GTT, &gtt_addr);
85                 if (r) {
86                         DRM_ERROR("Failed to pin GTT object %d\n", i);
87                         goto out_cleanup;
88                 }
89
90                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
91                 if (r) {
92                         DRM_ERROR("Failed to map GTT object %d\n", i);
93                         goto out_cleanup;
94                 }
95
96                 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
97                      gtt_start < gtt_end;
98                      gtt_start++)
99                         *gtt_start = gtt_start;
100
101                 radeon_bo_kunmap(gtt_obj[i]);
102
103                 r = radeon_fence_create(rdev, &fence);
104                 if (r) {
105                         DRM_ERROR("Failed to create GTT->VRAM fence %d\n", i);
106                         goto out_cleanup;
107                 }
108
109                 r = radeon_copy(rdev, gtt_addr, vram_addr, size / RADEON_GPU_PAGE_SIZE, fence);
110                 if (r) {
111                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
112                         goto out_cleanup;
113                 }
114
115                 r = radeon_fence_wait(fence, false);
116                 if (r) {
117                         DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
118                         goto out_cleanup;
119                 }
120
121                 radeon_fence_unref(&fence);
122
123                 r = radeon_bo_kmap(vram_obj, &vram_map);
124                 if (r) {
125                         DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
126                         goto out_cleanup;
127                 }
128
129                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
130                      vram_start = vram_map, vram_end = vram_map + size;
131                      vram_start < vram_end;
132                      gtt_start++, vram_start++) {
133                         if (*vram_start != gtt_start) {
134                                 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
135                                           "expected 0x%p (GTT map 0x%p-0x%p)\n",
136                                           i, *vram_start, gtt_start, gtt_map,
137                                           gtt_end);
138                                 radeon_bo_kunmap(vram_obj);
139                                 goto out_cleanup;
140                         }
141                         *vram_start = vram_start;
142                 }
143
144                 radeon_bo_kunmap(vram_obj);
145
146                 r = radeon_fence_create(rdev, &fence);
147                 if (r) {
148                         DRM_ERROR("Failed to create VRAM->GTT fence %d\n", i);
149                         goto out_cleanup;
150                 }
151
152                 r = radeon_copy(rdev, vram_addr, gtt_addr, size / RADEON_GPU_PAGE_SIZE, fence);
153                 if (r) {
154                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
155                         goto out_cleanup;
156                 }
157
158                 r = radeon_fence_wait(fence, false);
159                 if (r) {
160                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
161                         goto out_cleanup;
162                 }
163
164                 radeon_fence_unref(&fence);
165
166                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
167                 if (r) {
168                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
169                         goto out_cleanup;
170                 }
171
172                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
173                      vram_start = vram_map, vram_end = vram_map + size;
174                      gtt_start < gtt_end;
175                      gtt_start++, vram_start++) {
176                         if (*gtt_start != vram_start) {
177                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
178                                           "expected 0x%p (VRAM map 0x%p-0x%p)\n",
179                                           i, *gtt_start, vram_start, vram_map,
180                                           vram_end);
181                                 radeon_bo_kunmap(gtt_obj[i]);
182                                 goto out_cleanup;
183                         }
184                 }
185
186                 radeon_bo_kunmap(gtt_obj[i]);
187
188                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
189                          gtt_addr - rdev->mc.gtt_start);
190         }
191
192 out_cleanup:
193         if (vram_obj) {
194                 if (radeon_bo_is_reserved(vram_obj)) {
195                         radeon_bo_unpin(vram_obj);
196                         radeon_bo_unreserve(vram_obj);
197                 }
198                 radeon_bo_unref(&vram_obj);
199         }
200         if (gtt_obj) {
201                 for (i = 0; i < n; i++) {
202                         if (gtt_obj[i]) {
203                                 if (radeon_bo_is_reserved(gtt_obj[i])) {
204                                         radeon_bo_unpin(gtt_obj[i]);
205                                         radeon_bo_unreserve(gtt_obj[i]);
206                                 }
207                                 radeon_bo_unref(&gtt_obj[i]);
208                         }
209                 }
210                 kfree(gtt_obj);
211         }
212         if (fence) {
213                 radeon_fence_unref(&fence);
214         }
215         if (r) {
216                 printk(KERN_WARNING "Error while testing BO move.\n");
217         }
218 }