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1/*2 * Copyright 2011 Red Hat Inc.3 * All Rights Reserved.4 *5 * Permission is hereby granted, free of charge, to any person obtaining a6 * copy of this software and associated documentation files (the7 * "Software"), to deal in the Software without restriction, including8 * without limitation the rights to use, copy, modify, merge, publish,9 * distribute, sub license, and/or sell copies of the Software, and to10 * permit persons to whom the Software is furnished to do so, subject to11 * the following conditions:12 *13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL16 * 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 OR18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE19 * USE OR OTHER DEALINGS IN THE SOFTWARE.20 *21 * The above copyright notice and this permission notice (including the22 * next paragraph) shall be included in all copies or substantial portions23 * 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 allocate33 * after the last allocated bo. Principle is that in a linear GPU ring34 * progression was is after last is the oldest bo we allocated and thus35 * 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 closest38 * done bo if such one exist. If none exist and we are not asked to39 * block we report failure to allocate.40 *41 * If we are asked to block we wait on all the oldest fence of all42 * rings. We just wait for any of those fence to complete.43 */44 45#include "amdgpu.h"46 47int 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 66void 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 79int 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 96void 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 109void 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#endif117