drivers/gpu/drm/qxl/qxl_object.h

   1 /*
   2  * Copyright 2013 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Dave Airlie
  23  *          Alon Levy
  24  */
  25 #ifndef QXL_OBJECT_H
  26 #define QXL_OBJECT_H
  27
  28 #include "qxl_drv.h"
  29
  30 static inline int qxl_bo_reserve(struct qxl_bo *bo, bool no_wait)
  31 {
  32         int r;
  33
  34         r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
  35         if (unlikely(r != 0)) {
  36                 if (r != -ERESTARTSYS) {
  37                         struct drm_device *ddev = bo->tbo.base.dev;
  38
  39                         dev_err(ddev->dev, "%p reserve failed\n", bo);
  40                 }
  41                 return r;
  42         }
  43         return 0;
  44 }
  45
  46 static inline void qxl_bo_unreserve(struct qxl_bo *bo)
  47 {
  48         ttm_bo_unreserve(&bo->tbo);
  49 }
  50
  51 static inline u64 qxl_bo_gpu_offset(struct qxl_bo *bo)
  52 {
  53         return bo->tbo.offset;
  54 }
  55
  56 static inline unsigned long qxl_bo_size(struct qxl_bo *bo)
  57 {
  58         return bo->tbo.num_pages << PAGE_SHIFT;
  59 }
  60
  61 static inline u64 qxl_bo_mmap_offset(struct qxl_bo *bo)
  62 {
  63         return drm_vma_node_offset_addr(&bo->tbo.base.vma_node);
  64 }
  65
  66 static inline int qxl_bo_wait(struct qxl_bo *bo, u32 *mem_type,
  67                               bool no_wait)
  68 {
  69         int r;
  70
  71         r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
  72         if (unlikely(r != 0)) {
  73                 if (r != -ERESTARTSYS) {
  74                         struct drm_device *ddev = bo->tbo.base.dev;
  75
  76                         dev_err(ddev->dev, "%p reserve failed for wait\n",
  77                                 bo);
  78                 }
  79                 return r;
  80         }
  81         if (mem_type)
  82                 *mem_type = bo->tbo.mem.mem_type;
  83
  84         r = ttm_bo_wait(&bo->tbo, true, no_wait);
  85         ttm_bo_unreserve(&bo->tbo);
  86         return r;
  87 }
  88
  89 extern int qxl_bo_create(struct qxl_device *qdev,
  90                          unsigned long size,
  91                          bool kernel, bool pinned, u32 domain,
  92                          struct qxl_surface *surf,
  93                          struct qxl_bo **bo_ptr);
  94 extern int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
  95 extern void qxl_bo_kunmap(struct qxl_bo *bo);
  96 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
  97 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
  98 extern struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo);
  99 extern void qxl_bo_unref(struct qxl_bo **bo);
 100 extern int qxl_bo_pin(struct qxl_bo *bo);
 101 extern int qxl_bo_unpin(struct qxl_bo *bo);
 102 extern void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned);
 103 extern bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo);
 104
 105 #endif