1 /* 2 * Copyright 2008 Advanced Micro Devices, Inc. 3 * Copyright 2008 Red Hat Inc. 4 * Copyright 2009 Jerome Glisse. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Dave Airlie 25 * Alex Deucher 26 * Jerome Glisse 27 */ 28 #ifndef __RADEON_OBJECT_H__ 29 #define __RADEON_OBJECT_H__ 30 31 #include <drm/radeon_drm.h> 32 #include "radeon.h" 33 34 /** 35 * radeon_mem_type_to_domain - return domain corresponding to mem_type 36 * @mem_type: ttm memory type 37 * 38 * Returns corresponding domain of the ttm mem_type 39 */ 40 static inline unsigned radeon_mem_type_to_domain(u32 mem_type) 41 { 42 switch (mem_type) { 43 case TTM_PL_VRAM: 44 return RADEON_GEM_DOMAIN_VRAM; 45 case TTM_PL_TT: 46 return RADEON_GEM_DOMAIN_GTT; 47 case TTM_PL_SYSTEM: 48 return RADEON_GEM_DOMAIN_CPU; 49 default: 50 break; 51 } 52 return 0; 53 } 54 55 /** 56 * radeon_bo_reserve - reserve bo 57 * @bo: bo structure 58 * @no_wait: don't sleep while trying to reserve (return -EBUSY) 59 * 60 * Returns: 61 * -EBUSY: buffer is busy and @no_wait is true 62 * -ERESTART: A wait for the buffer to become unreserved was interrupted by 63 * a signal. Release all buffer reservations and return to user-space. 64 */ 65 static inline int radeon_bo_reserve(struct radeon_bo *bo, bool no_wait) 66 { 67 int r; 68 69 retry: 70 r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); 71 if (unlikely(r != 0)) { 72 if (r == -ERESTART) 73 goto retry; 74 dev_err(bo->rdev->dev, "%p reserve failed\n", bo); 75 return r; 76 } 77 return 0; 78 } 79 80 static inline void radeon_bo_unreserve(struct radeon_bo *bo) 81 { 82 ttm_bo_unreserve(&bo->tbo); 83 } 84 85 /** 86 * radeon_bo_gpu_offset - return GPU offset of bo 87 * @bo: radeon object for which we query the offset 88 * 89 * Returns current GPU offset of the object. 90 * 91 * Note: object should either be pinned or reserved when calling this 92 * function, it might be usefull to add check for this for debugging. 93 */ 94 static inline u64 radeon_bo_gpu_offset(struct radeon_bo *bo) 95 { 96 return bo->tbo.offset; 97 } 98 99 static inline unsigned long radeon_bo_size(struct radeon_bo *bo) 100 { 101 return bo->tbo.num_pages << PAGE_SHIFT; 102 } 103 104 static inline bool radeon_bo_is_reserved(struct radeon_bo *bo) 105 { 106 return !!atomic_read(&bo->tbo.reserved); 107 } 108 109 /** 110 * radeon_bo_mmap_offset - return mmap offset of bo 111 * @bo: radeon object for which we query the offset 112 * 113 * Returns mmap offset of the object. 114 * 115 * Note: addr_space_offset is constant after ttm bo init thus isn't protected 116 * by any lock. 117 */ 118 static inline u64 radeon_bo_mmap_offset(struct radeon_bo *bo) 119 { 120 return bo->tbo.addr_space_offset; 121 } 122 123 static inline int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, 124 bool no_wait) 125 { 126 int r; 127 128 retry: 129 r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); 130 if (unlikely(r != 0)) { 131 if (r == -ERESTART) 132 goto retry; 133 dev_err(bo->rdev->dev, "%p reserve failed for wait\n", bo); 134 return r; 135 } 136 spin_lock(&bo->tbo.lock); 137 if (mem_type) 138 *mem_type = bo->tbo.mem.mem_type; 139 if (bo->tbo.sync_obj) 140 r = ttm_bo_wait(&bo->tbo, true, true, no_wait); 141 spin_unlock(&bo->tbo.lock); 142 ttm_bo_unreserve(&bo->tbo); 143 if (unlikely(r == -ERESTART)) 144 goto retry; 145 return r; 146 } 147 148 extern int radeon_bo_create(struct radeon_device *rdev, 149 struct drm_gem_object *gobj, unsigned long size, 150 bool kernel, u32 domain, 151 struct radeon_bo **bo_ptr); 152 extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr); 153 extern void radeon_bo_kunmap(struct radeon_bo *bo); 154 extern void radeon_bo_unref(struct radeon_bo **bo); 155 extern int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr); 156 extern int radeon_bo_unpin(struct radeon_bo *bo); 157 extern int radeon_bo_evict_vram(struct radeon_device *rdev); 158 extern void radeon_bo_force_delete(struct radeon_device *rdev); 159 extern int radeon_bo_init(struct radeon_device *rdev); 160 extern void radeon_bo_fini(struct radeon_device *rdev); 161 extern void radeon_bo_list_add_object(struct radeon_bo_list *lobj, 162 struct list_head *head); 163 extern int radeon_bo_list_reserve(struct list_head *head); 164 extern void radeon_bo_list_unreserve(struct list_head *head); 165 extern int radeon_bo_list_validate(struct list_head *head, void *fence); 166 extern void radeon_bo_list_unvalidate(struct list_head *head, void *fence); 167 extern int radeon_bo_fbdev_mmap(struct radeon_bo *bo, 168 struct vm_area_struct *vma); 169 extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo, 170 u32 tiling_flags, u32 pitch); 171 extern void radeon_bo_get_tiling_flags(struct radeon_bo *bo, 172 u32 *tiling_flags, u32 *pitch); 173 extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved, 174 bool force_drop); 175 extern void radeon_bo_move_notify(struct ttm_buffer_object *bo, 176 struct ttm_mem_reg *mem); 177 extern void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo); 178 extern int radeon_bo_get_surface_reg(struct radeon_bo *bo); 179 #endif 180