qxl_gem.c

  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
 26#include <drm/drm.h>
 27#include <drm/drm_print.h>
 28
 29#include "qxl_drv.h"
 30#include "qxl_object.h"
 31
 32void qxl_gem_object_free(struct drm_gem_object *gobj)
 33{
 34	struct qxl_bo *qobj = gem_to_qxl_bo(gobj);
 35	struct qxl_device *qdev;
 36	struct ttm_buffer_object *tbo;
 37
 38	qdev = to_qxl(gobj->dev);
 39
 40	qxl_surface_evict(qdev, qobj, false);
 41
 42	tbo = &qobj->tbo;
 43	ttm_bo_fini(tbo);
 44}
 45
 46int qxl_gem_object_create(struct qxl_device *qdev, int size,
 47			  int alignment, int initial_domain,
 48			  bool discardable, bool kernel,
 49			  struct qxl_surface *surf,
 50			  struct drm_gem_object **obj)
 51{
 52	struct qxl_bo *qbo;
 53	int r;
 54
 55	*obj = NULL;
 56	/* At least align on page size */
 57	if (alignment < PAGE_SIZE)
 58		alignment = PAGE_SIZE;
 59	r = qxl_bo_create(qdev, size, kernel, false, initial_domain, 0, surf, &qbo);
 60	if (r) {
 61		if (r != -ERESTARTSYS)
 62			DRM_ERROR(
 63			"Failed to allocate GEM object (%d, %d, %u, %d)\n",
 64				  size, initial_domain, alignment, r);
 65		return r;
 66	}
 67	*obj = &qbo->tbo.base;
 68
 69	mutex_lock(&qdev->gem.mutex);
 70	list_add_tail(&qbo->list, &qdev->gem.objects);
 71	mutex_unlock(&qdev->gem.mutex);
 72
 73	return 0;
 74}
 75
 76/*
 77 * If the caller passed a valid gobj pointer, it is responsible to call
 78 * drm_gem_object_put() when it no longer needs to acess the object.
 79 *
 80 * If gobj is NULL, it is handled internally.
 81 */
 82int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
 83				      struct drm_file *file_priv,
 84				      u32 domain,
 85				      size_t size,
 86				      struct qxl_surface *surf,
 87				      struct drm_gem_object **gobj,
 88				      uint32_t *handle)
 89{
 90	int r;
 91	struct drm_gem_object *local_gobj;
 92
 93	BUG_ON(!handle);
 94
 95	r = qxl_gem_object_create(qdev, size, 0,
 96				  domain,
 97				  false, false, surf,
 98				  &local_gobj);
 99	if (r)
100		return -ENOMEM;
101	r = drm_gem_handle_create(file_priv, local_gobj, handle);
102	if (r)
103		return r;
104
105	if (gobj)
106		*gobj = local_gobj;
107	else
108		/* drop reference from allocate - handle holds it now */
109		drm_gem_object_put(local_gobj);
110
111	return 0;
112}
113
114int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
115{
116	return 0;
117}
118
119void qxl_gem_object_close(struct drm_gem_object *obj,
120			  struct drm_file *file_priv)
121{
122}
123
124void qxl_gem_init(struct qxl_device *qdev)
125{
126	INIT_LIST_HEAD(&qdev->gem.objects);
127}
128
129void qxl_gem_fini(struct qxl_device *qdev)
130{
131	qxl_bo_force_delete(qdev);
132}