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 * -ERESTARTSYS: 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 r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); 70 if (unlikely(r != 0)) { 71 if (r != -ERESTARTSYS) 72 dev_err(bo->rdev->dev, "%p reserve failed\n", bo); 73 return r; 74 } 75 return 0; 76 } 77 78 static inline void radeon_bo_unreserve(struct radeon_bo *bo) 79 { 80 ttm_bo_unreserve(&bo->tbo); 81 } 82 83 /** 84 * radeon_bo_gpu_offset - return GPU offset of bo 85 * @bo: radeon object for which we query the offset 86 * 87 * Returns current GPU offset of the object. 88 * 89 * Note: object should either be pinned or reserved when calling this 90 * function, it might be usefull to add check for this for debugging. 91 */ 92 static inline u64 radeon_bo_gpu_offset(struct radeon_bo *bo) 93 { 94 return bo->tbo.offset; 95 } 96 97 static inline unsigned long radeon_bo_size(struct radeon_bo *bo) 98 { 99 return bo->tbo.num_pages << PAGE_SHIFT; 100 } 101 102 static inline bool radeon_bo_is_reserved(struct radeon_bo *bo) 103 { 104 return !!atomic_read(&bo->tbo.reserved); 105 } 106 107 /** 108 * radeon_bo_mmap_offset - return mmap offset of bo 109 * @bo: radeon object for which we query the offset 110 * 111 * Returns mmap offset of the object. 112 * 113 * Note: addr_space_offset is constant after ttm bo init thus isn't protected 114 * by any lock. 115 */ 116 static inline u64 radeon_bo_mmap_offset(struct radeon_bo *bo) 117 { 118 return bo->tbo.addr_space_offset; 119 } 120 121 static inline int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, 122 bool no_wait) 123 { 124 int r; 125 126 r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); 127 if (unlikely(r != 0)) { 128 if (r != -ERESTARTSYS) 129 dev_err(bo->rdev->dev, "%p reserve failed for wait\n", bo); 130 return r; 131 } 132 spin_lock(&bo->tbo.lock); 133 if (mem_type) 134 *mem_type = bo->tbo.mem.mem_type; 135 if (bo->tbo.sync_obj) 136 r = ttm_bo_wait(&bo->tbo, true, true, no_wait); 137 spin_unlock(&bo->tbo.lock); 138 ttm_bo_unreserve(&bo->tbo); 139 return r; 140 } 141 142 extern int radeon_bo_create(struct radeon_device *rdev, 143 struct drm_gem_object *gobj, unsigned long size, 144 bool kernel, u32 domain, 145 struct radeon_bo **bo_ptr); 146 extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr); 147 extern void radeon_bo_kunmap(struct radeon_bo *bo); 148 extern void radeon_bo_unref(struct radeon_bo **bo); 149 extern int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr); 150 extern int radeon_bo_unpin(struct radeon_bo *bo); 151 extern int radeon_bo_evict_vram(struct radeon_device *rdev); 152 extern void radeon_bo_force_delete(struct radeon_device *rdev); 153 extern int radeon_bo_init(struct radeon_device *rdev); 154 extern void radeon_bo_fini(struct radeon_device *rdev); 155 extern void radeon_bo_list_add_object(struct radeon_bo_list *lobj, 156 struct list_head *head); 157 extern int radeon_bo_list_reserve(struct list_head *head); 158 extern void radeon_bo_list_unreserve(struct list_head *head); 159 extern int radeon_bo_list_validate(struct list_head *head, void *fence); 160 extern void radeon_bo_list_unvalidate(struct list_head *head, void *fence); 161 extern int radeon_bo_fbdev_mmap(struct radeon_bo *bo, 162 struct vm_area_struct *vma); 163 extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo, 164 u32 tiling_flags, u32 pitch); 165 extern void radeon_bo_get_tiling_flags(struct radeon_bo *bo, 166 u32 *tiling_flags, u32 *pitch); 167 extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved, 168 bool force_drop); 169 extern void radeon_bo_move_notify(struct ttm_buffer_object *bo, 170 struct ttm_mem_reg *mem); 171 extern void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo); 172 extern int radeon_bo_get_surface_reg(struct radeon_bo *bo); 173 #endif 174