drivers/gpu/drm/radeon/radeon_object.h

   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