LXR linux/drivers/gpu/drm/radeon/radeon

   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 */
  40static 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 */
  65static 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
  78static 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 */
  92static inline u64 radeon_bo_gpu_offset(struct radeon_bo *bo)
  93{
  94        return bo->tbo.offset;
  95}
  96
  97static inline unsigned long radeon_bo_size(struct radeon_bo *bo)
  98{
  99        return bo->tbo.num_pages << PAGE_SHIFT;
 100}
 101
 102static 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 */
 116static inline u64 radeon_bo_mmap_offset(struct radeon_bo *bo)
 117{
 118        return bo->tbo.addr_space_offset;
 119}
 120
 121static 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                return r;
 129        spin_lock(&bo->tbo.bdev->fence_lock);
 130        if (mem_type)
 131                *mem_type = bo->tbo.mem.mem_type;
 132        if (bo->tbo.sync_obj)
 133                r = ttm_bo_wait(&bo->tbo, true, true, no_wait);
 134        spin_unlock(&bo->tbo.bdev->fence_lock);
 135        ttm_bo_unreserve(&bo->tbo);
 136        return r;
 137}
 138
 139extern int radeon_bo_create(struct radeon_device *rdev,
 140                            struct drm_gem_object *gobj, unsigned long size,
 141                            int byte_align,
 142                            bool kernel, u32 domain,
 143                            struct radeon_bo **bo_ptr);
 144extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr);
 145extern void radeon_bo_kunmap(struct radeon_bo *bo);
 146extern void radeon_bo_unref(struct radeon_bo **bo);
 147extern int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr);
 148extern int radeon_bo_unpin(struct radeon_bo *bo);
 149extern int radeon_bo_evict_vram(struct radeon_device *rdev);
 150extern void radeon_bo_force_delete(struct radeon_device *rdev);
 151extern int radeon_bo_init(struct radeon_device *rdev);
 152extern void radeon_bo_fini(struct radeon_device *rdev);
 153extern void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
 154                                struct list_head *head);
 155extern int radeon_bo_list_validate(struct list_head *head);
 156extern int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
 157                                struct vm_area_struct *vma);
 158extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
 159                                u32 tiling_flags, u32 pitch);
 160extern void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 161                                u32 *tiling_flags, u32 *pitch);
 162extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 163                                bool force_drop);
 164extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,
 165                                        struct ttm_mem_reg *mem);
 166extern int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
 167extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
 168#endif
 169