LXR linux/drivers/gpu/drm/qxl/qxl

   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
  30static 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
  46static inline void qxl_bo_unreserve(struct qxl_bo *bo)
  47{
  48        ttm_bo_unreserve(&bo->tbo);
  49}
  50
  51static inline unsigned long qxl_bo_size(struct qxl_bo *bo)
  52{
  53        return bo->tbo.num_pages << PAGE_SHIFT;
  54}
  55
  56static inline u64 qxl_bo_mmap_offset(struct qxl_bo *bo)
  57{
  58        return drm_vma_node_offset_addr(&bo->tbo.base.vma_node);
  59}
  60
  61static inline int qxl_bo_wait(struct qxl_bo *bo, u32 *mem_type,
  62                              bool no_wait)
  63{
  64        int r;
  65
  66        r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL);
  67        if (unlikely(r != 0)) {
  68                if (r != -ERESTARTSYS) {
  69                        struct drm_device *ddev = bo->tbo.base.dev;
  70
  71                        dev_err(ddev->dev, "%p reserve failed for wait\n",
  72                                bo);
  73                }
  74                return r;
  75        }
  76        if (mem_type)
  77                *mem_type = bo->tbo.mem.mem_type;
  78
  79        r = ttm_bo_wait(&bo->tbo, true, no_wait);
  80        ttm_bo_unreserve(&bo->tbo);
  81        return r;
  82}
  83
  84extern int qxl_bo_create(struct qxl_device *qdev,
  85                         unsigned long size,
  86                         bool kernel, bool pinned, u32 domain,
  87                         struct qxl_surface *surf,
  88                         struct qxl_bo **bo_ptr);
  89extern int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
  90extern void qxl_bo_kunmap(struct qxl_bo *bo);
  91void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
  92void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
  93extern struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo);
  94extern void qxl_bo_unref(struct qxl_bo **bo);
  95extern int qxl_bo_pin(struct qxl_bo *bo);
  96extern int qxl_bo_unpin(struct qxl_bo *bo);
  97extern void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned);
  98extern bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo);
  99
 100#endif
 101