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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 "drmP.h"
27 #include "drm/drm.h"
28 #include "qxl_drv.h"
29 #include "qxl_object.h"
30 
qxl_gem_object_init(struct drm_gem_object * obj)31 int qxl_gem_object_init(struct drm_gem_object *obj)
32 {
33 	/* we do nothings here */
34 	return 0;
35 }
36 
qxl_gem_object_free(struct drm_gem_object * gobj)37 void qxl_gem_object_free(struct drm_gem_object *gobj)
38 {
39 	struct qxl_bo *qobj = gem_to_qxl_bo(gobj);
40 
41 	if (qobj)
42 		qxl_bo_unref(&qobj);
43 }
44 
qxl_gem_object_create(struct qxl_device * qdev,int size,int alignment,int initial_domain,bool discardable,bool kernel,struct qxl_surface * surf,struct drm_gem_object ** obj)45 int qxl_gem_object_create(struct qxl_device *qdev, int size,
46 			  int alignment, int initial_domain,
47 			  bool discardable, bool kernel,
48 			  struct qxl_surface *surf,
49 			  struct drm_gem_object **obj)
50 {
51 	struct qxl_bo *qbo;
52 	int r;
53 
54 	*obj = NULL;
55 	/* At least align on page size */
56 	if (alignment < PAGE_SIZE)
57 		alignment = PAGE_SIZE;
58 	r = qxl_bo_create(qdev, size, kernel, initial_domain, surf, &qbo);
59 	if (r) {
60 		if (r != -ERESTARTSYS)
61 			DRM_ERROR(
62 			"Failed to allocate GEM object (%d, %d, %u, %d)\n",
63 				  size, initial_domain, alignment, r);
64 		return r;
65 	}
66 	*obj = &qbo->gem_base;
67 
68 	mutex_lock(&qdev->gem.mutex);
69 	list_add_tail(&qbo->list, &qdev->gem.objects);
70 	mutex_unlock(&qdev->gem.mutex);
71 
72 	return 0;
73 }
74 
qxl_gem_object_create_with_handle(struct qxl_device * qdev,struct drm_file * file_priv,u32 domain,size_t size,struct qxl_surface * surf,struct qxl_bo ** qobj,uint32_t * handle)75 int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
76 				      struct drm_file *file_priv,
77 				      u32 domain,
78 				      size_t size,
79 				      struct qxl_surface *surf,
80 				      struct qxl_bo **qobj,
81 				      uint32_t *handle)
82 {
83 	struct drm_gem_object *gobj;
84 	int r;
85 
86 	BUG_ON(!qobj);
87 	BUG_ON(!handle);
88 
89 	r = qxl_gem_object_create(qdev, size, 0,
90 				  domain,
91 				  false, false, surf,
92 				  &gobj);
93 	if (r)
94 		return -ENOMEM;
95 	r = drm_gem_handle_create(file_priv, gobj, handle);
96 	if (r)
97 		return r;
98 	/* drop reference from allocate - handle holds it now */
99 	*qobj = gem_to_qxl_bo(gobj);
100 	drm_gem_object_unreference_unlocked(gobj);
101 	return 0;
102 }
103 
qxl_gem_object_pin(struct drm_gem_object * obj,uint32_t pin_domain,uint64_t * gpu_addr)104 int qxl_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
105 			  uint64_t *gpu_addr)
106 {
107 	struct qxl_bo *qobj = obj->driver_private;
108 	int r;
109 
110 	r = qxl_bo_reserve(qobj, false);
111 	if (unlikely(r != 0))
112 		return r;
113 	r = qxl_bo_pin(qobj, pin_domain, gpu_addr);
114 	qxl_bo_unreserve(qobj);
115 	return r;
116 }
117 
qxl_gem_object_unpin(struct drm_gem_object * obj)118 void qxl_gem_object_unpin(struct drm_gem_object *obj)
119 {
120 	struct qxl_bo *qobj = obj->driver_private;
121 	int r;
122 
123 	r = qxl_bo_reserve(qobj, false);
124 	if (likely(r == 0)) {
125 		qxl_bo_unpin(qobj);
126 		qxl_bo_unreserve(qobj);
127 	}
128 }
129 
qxl_gem_object_open(struct drm_gem_object * obj,struct drm_file * file_priv)130 int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
131 {
132 	return 0;
133 }
134 
qxl_gem_object_close(struct drm_gem_object * obj,struct drm_file * file_priv)135 void qxl_gem_object_close(struct drm_gem_object *obj,
136 			  struct drm_file *file_priv)
137 {
138 }
139 
qxl_gem_init(struct qxl_device * qdev)140 int qxl_gem_init(struct qxl_device *qdev)
141 {
142 	INIT_LIST_HEAD(&qdev->gem.objects);
143 	return 0;
144 }
145 
qxl_gem_fini(struct qxl_device * qdev)146 void qxl_gem_fini(struct qxl_device *qdev)
147 {
148 	qxl_bo_force_delete(qdev);
149 }
150