1 /*
2 * Copyright 2011 Red Hat Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
20 *
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
23 * of the Software.
24 *
25 */
26 /*
27 * Authors:
28 * Jerome Glisse <glisse@freedesktop.org>
29 */
30 /* Algorithm:
31 *
32 * We store the last allocated bo in "hole", we always try to allocate
33 * after the last allocated bo. Principle is that in a linear GPU ring
34 * progression was is after last is the oldest bo we allocated and thus
35 * the first one that should no longer be in use by the GPU.
36 *
37 * If it's not the case we skip over the bo after last to the closest
38 * done bo if such one exist. If none exist and we are not asked to
39 * block we report failure to allocate.
40 *
41 * If we are asked to block we wait on all the oldest fence of all
42 * rings. We just wait for any of those fence to complete.
43 */
44
45 #include "amdgpu.h"
46
amdgpu_sa_bo_manager_init(struct amdgpu_device * adev,struct amdgpu_sa_manager * sa_manager,unsigned int size,u32 suballoc_align,u32 domain)47 int amdgpu_sa_bo_manager_init(struct amdgpu_device *adev,
48 struct amdgpu_sa_manager *sa_manager,
49 unsigned int size, u32 suballoc_align, u32 domain)
50 {
51 int r;
52
53 r = amdgpu_bo_create_kernel(adev, size, AMDGPU_GPU_PAGE_SIZE, domain,
54 &sa_manager->bo, &sa_manager->gpu_addr,
55 &sa_manager->cpu_ptr);
56 if (r) {
57 dev_err(adev->dev, "(%d) failed to allocate bo for manager\n", r);
58 return r;
59 }
60
61 memset(sa_manager->cpu_ptr, 0, size);
62 drm_suballoc_manager_init(&sa_manager->base, size, suballoc_align);
63 return r;
64 }
65
amdgpu_sa_bo_manager_fini(struct amdgpu_device * adev,struct amdgpu_sa_manager * sa_manager)66 void amdgpu_sa_bo_manager_fini(struct amdgpu_device *adev,
67 struct amdgpu_sa_manager *sa_manager)
68 {
69 if (sa_manager->bo == NULL) {
70 dev_err(adev->dev, "no bo for sa manager\n");
71 return;
72 }
73
74 drm_suballoc_manager_fini(&sa_manager->base);
75
76 amdgpu_bo_free_kernel(&sa_manager->bo, &sa_manager->gpu_addr, &sa_manager->cpu_ptr);
77 }
78
amdgpu_sa_bo_new(struct amdgpu_sa_manager * sa_manager,struct drm_suballoc ** sa_bo,unsigned int size)79 int amdgpu_sa_bo_new(struct amdgpu_sa_manager *sa_manager,
80 struct drm_suballoc **sa_bo,
81 unsigned int size)
82 {
83 struct drm_suballoc *sa = drm_suballoc_new(&sa_manager->base, size,
84 GFP_KERNEL, false, 0);
85
86 if (IS_ERR(sa)) {
87 *sa_bo = NULL;
88
89 return PTR_ERR(sa);
90 }
91
92 *sa_bo = sa;
93 return 0;
94 }
95
amdgpu_sa_bo_free(struct amdgpu_device * adev,struct drm_suballoc ** sa_bo,struct dma_fence * fence)96 void amdgpu_sa_bo_free(struct amdgpu_device *adev, struct drm_suballoc **sa_bo,
97 struct dma_fence *fence)
98 {
99 if (sa_bo == NULL || *sa_bo == NULL) {
100 return;
101 }
102
103 drm_suballoc_free(*sa_bo, fence);
104 *sa_bo = NULL;
105 }
106
107 #if defined(CONFIG_DEBUG_FS)
108
amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager * sa_manager,struct seq_file * m)109 void amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager *sa_manager,
110 struct seq_file *m)
111 {
112 struct drm_printer p = drm_seq_file_printer(m);
113
114 drm_suballoc_dump_debug_info(&sa_manager->base, &p, sa_manager->gpu_addr);
115 }
116 #endif
117
