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1/*
2 * Copyright (C) 2015 Red Hat, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26#include <drm/drm_file.h>
27#include <drm/drm_fourcc.h>
28
29#include "virtgpu_drv.h"
30
31void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj)
32{
33 struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(gem_obj);
34
35 if (obj)
36 virtio_gpu_object_unref(&obj);
37}
38
39struct virtio_gpu_object*
40virtio_gpu_alloc_object(struct drm_device *dev,
41 struct virtio_gpu_object_params *params,
42 struct virtio_gpu_fence *fence)
43{
44 struct virtio_gpu_device *vgdev = dev->dev_private;
45 struct virtio_gpu_object *obj;
46 int ret;
47
48 ret = virtio_gpu_object_create(vgdev, params, &obj, fence);
49 if (ret)
50 return ERR_PTR(ret);
51
52 return obj;
53}
54
55int virtio_gpu_gem_create(struct drm_file *file,
56 struct drm_device *dev,
57 struct virtio_gpu_object_params *params,
58 struct drm_gem_object **obj_p,
59 uint32_t *handle_p)
60{
61 struct virtio_gpu_object *obj;
62 int ret;
63 u32 handle;
64
65 obj = virtio_gpu_alloc_object(dev, params, NULL);
66 if (IS_ERR(obj))
67 return PTR_ERR(obj);
68
69 ret = drm_gem_handle_create(file, &obj->gem_base, &handle);
70 if (ret) {
71 drm_gem_object_release(&obj->gem_base);
72 return ret;
73 }
74
75 *obj_p = &obj->gem_base;
76
77 /* drop reference from allocate - handle holds it now */
78 drm_gem_object_put_unlocked(&obj->gem_base);
79
80 *handle_p = handle;
81 return 0;
82}
83
84int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
85 struct drm_device *dev,
86 struct drm_mode_create_dumb *args)
87{
88 struct drm_gem_object *gobj;
89 struct virtio_gpu_object_params params = { 0 };
90 int ret;
91 uint32_t pitch;
92
93 if (args->bpp != 32)
94 return -EINVAL;
95
96 pitch = args->width * 4;
97 args->size = pitch * args->height;
98 args->size = ALIGN(args->size, PAGE_SIZE);
99
100 params.format = virtio_gpu_translate_format(DRM_FORMAT_HOST_XRGB8888);
101 params.width = args->width;
102 params.height = args->height;
103 params.size = args->size;
104 params.dumb = true;
105 ret = virtio_gpu_gem_create(file_priv, dev, ¶ms, &gobj,
106 &args->handle);
107 if (ret)
108 goto fail;
109
110 args->pitch = pitch;
111 return ret;
112
113fail:
114 return ret;
115}
116
117int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
118 struct drm_device *dev,
119 uint32_t handle, uint64_t *offset_p)
120{
121 struct drm_gem_object *gobj;
122 struct virtio_gpu_object *obj;
123
124 BUG_ON(!offset_p);
125 gobj = drm_gem_object_lookup(file_priv, handle);
126 if (gobj == NULL)
127 return -ENOENT;
128 obj = gem_to_virtio_gpu_obj(gobj);
129 *offset_p = virtio_gpu_object_mmap_offset(obj);
130 drm_gem_object_put_unlocked(gobj);
131 return 0;
132}
133
134int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
135 struct drm_file *file)
136{
137 struct virtio_gpu_device *vgdev = obj->dev->dev_private;
138 struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
139 struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
140 int r;
141
142 if (!vgdev->has_virgl_3d)
143 return 0;
144
145 r = virtio_gpu_object_reserve(qobj, false);
146 if (r)
147 return r;
148
149 virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id,
150 qobj->hw_res_handle);
151 virtio_gpu_object_unreserve(qobj);
152 return 0;
153}
154
155void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
156 struct drm_file *file)
157{
158 struct virtio_gpu_device *vgdev = obj->dev->dev_private;
159 struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
160 struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
161 int r;
162
163 if (!vgdev->has_virgl_3d)
164 return;
165
166 r = virtio_gpu_object_reserve(qobj, false);
167 if (r)
168 return;
169
170 virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id,
171 qobj->hw_res_handle);
172 virtio_gpu_object_unreserve(qobj);
173}
1/*
2 * Copyright (C) 2015 Red Hat, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26#include <drm/drm_file.h>
27#include <drm/drm_fourcc.h>
28
29#include "virtgpu_drv.h"
30
31static int virtio_gpu_gem_create(struct drm_file *file,
32 struct drm_device *dev,
33 struct virtio_gpu_object_params *params,
34 struct drm_gem_object **obj_p,
35 uint32_t *handle_p)
36{
37 struct virtio_gpu_device *vgdev = dev->dev_private;
38 struct virtio_gpu_object *obj;
39 int ret;
40 u32 handle;
41
42 if (vgdev->has_virgl_3d)
43 virtio_gpu_create_context(dev, file);
44
45 ret = virtio_gpu_object_create(vgdev, params, &obj, NULL);
46 if (ret < 0)
47 return ret;
48
49 ret = drm_gem_handle_create(file, &obj->base.base, &handle);
50 if (ret) {
51 drm_gem_object_release(&obj->base.base);
52 return ret;
53 }
54
55 *obj_p = &obj->base.base;
56
57 /* drop reference from allocate - handle holds it now */
58 drm_gem_object_put(&obj->base.base);
59
60 *handle_p = handle;
61 return 0;
62}
63
64int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
65 struct drm_device *dev,
66 struct drm_mode_create_dumb *args)
67{
68 struct drm_gem_object *gobj;
69 struct virtio_gpu_object_params params = { 0 };
70 int ret;
71 uint32_t pitch;
72
73 if (args->bpp != 32)
74 return -EINVAL;
75
76 pitch = args->width * 4;
77 args->size = pitch * args->height;
78 args->size = ALIGN(args->size, PAGE_SIZE);
79
80 params.format = virtio_gpu_translate_format(DRM_FORMAT_HOST_XRGB8888);
81 params.width = args->width;
82 params.height = args->height;
83 params.size = args->size;
84 params.dumb = true;
85 ret = virtio_gpu_gem_create(file_priv, dev, ¶ms, &gobj,
86 &args->handle);
87 if (ret)
88 goto fail;
89
90 args->pitch = pitch;
91 return ret;
92
93fail:
94 return ret;
95}
96
97int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
98 struct drm_device *dev,
99 uint32_t handle, uint64_t *offset_p)
100{
101 struct drm_gem_object *gobj;
102
103 BUG_ON(!offset_p);
104 gobj = drm_gem_object_lookup(file_priv, handle);
105 if (gobj == NULL)
106 return -ENOENT;
107 *offset_p = drm_vma_node_offset_addr(&gobj->vma_node);
108 drm_gem_object_put(gobj);
109 return 0;
110}
111
112int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
113 struct drm_file *file)
114{
115 struct virtio_gpu_device *vgdev = obj->dev->dev_private;
116 struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
117 struct virtio_gpu_object_array *objs;
118
119 if (!vgdev->has_virgl_3d)
120 goto out_notify;
121
122 objs = virtio_gpu_array_alloc(1);
123 if (!objs)
124 return -ENOMEM;
125 virtio_gpu_array_add_obj(objs, obj);
126
127 virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id,
128 objs);
129out_notify:
130 virtio_gpu_notify(vgdev);
131 return 0;
132}
133
134void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
135 struct drm_file *file)
136{
137 struct virtio_gpu_device *vgdev = obj->dev->dev_private;
138 struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
139 struct virtio_gpu_object_array *objs;
140
141 if (!vgdev->has_virgl_3d)
142 return;
143
144 objs = virtio_gpu_array_alloc(1);
145 if (!objs)
146 return;
147 virtio_gpu_array_add_obj(objs, obj);
148
149 virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id,
150 objs);
151 virtio_gpu_notify(vgdev);
152}
153
154struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents)
155{
156 struct virtio_gpu_object_array *objs;
157 size_t size = sizeof(*objs) + sizeof(objs->objs[0]) * nents;
158
159 objs = kmalloc(size, GFP_KERNEL);
160 if (!objs)
161 return NULL;
162
163 objs->nents = 0;
164 objs->total = nents;
165 return objs;
166}
167
168static void virtio_gpu_array_free(struct virtio_gpu_object_array *objs)
169{
170 kfree(objs);
171}
172
173struct virtio_gpu_object_array*
174virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents)
175{
176 struct virtio_gpu_object_array *objs;
177 u32 i;
178
179 objs = virtio_gpu_array_alloc(nents);
180 if (!objs)
181 return NULL;
182
183 for (i = 0; i < nents; i++) {
184 objs->objs[i] = drm_gem_object_lookup(drm_file, handles[i]);
185 if (!objs->objs[i]) {
186 objs->nents = i;
187 virtio_gpu_array_put_free(objs);
188 return NULL;
189 }
190 }
191 objs->nents = i;
192 return objs;
193}
194
195void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
196 struct drm_gem_object *obj)
197{
198 if (WARN_ON_ONCE(objs->nents == objs->total))
199 return;
200
201 drm_gem_object_get(obj);
202 objs->objs[objs->nents] = obj;
203 objs->nents++;
204}
205
206int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs)
207{
208 int ret;
209
210 if (objs->nents == 1) {
211 ret = dma_resv_lock_interruptible(objs->objs[0]->resv, NULL);
212 } else {
213 ret = drm_gem_lock_reservations(objs->objs, objs->nents,
214 &objs->ticket);
215 }
216 return ret;
217}
218
219void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs)
220{
221 if (objs->nents == 1) {
222 dma_resv_unlock(objs->objs[0]->resv);
223 } else {
224 drm_gem_unlock_reservations(objs->objs, objs->nents,
225 &objs->ticket);
226 }
227}
228
229void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
230 struct dma_fence *fence)
231{
232 int i;
233
234 for (i = 0; i < objs->nents; i++)
235 dma_resv_add_excl_fence(objs->objs[i]->resv, fence);
236}
237
238void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs)
239{
240 u32 i;
241
242 for (i = 0; i < objs->nents; i++)
243 drm_gem_object_put(objs->objs[i]);
244 virtio_gpu_array_free(objs);
245}
246
247void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
248 struct virtio_gpu_object_array *objs)
249{
250 spin_lock(&vgdev->obj_free_lock);
251 list_add_tail(&objs->next, &vgdev->obj_free_list);
252 spin_unlock(&vgdev->obj_free_lock);
253 schedule_work(&vgdev->obj_free_work);
254}
255
256void virtio_gpu_array_put_free_work(struct work_struct *work)
257{
258 struct virtio_gpu_device *vgdev =
259 container_of(work, struct virtio_gpu_device, obj_free_work);
260 struct virtio_gpu_object_array *objs;
261
262 spin_lock(&vgdev->obj_free_lock);
263 while (!list_empty(&vgdev->obj_free_list)) {
264 objs = list_first_entry(&vgdev->obj_free_list,
265 struct virtio_gpu_object_array, next);
266 list_del(&objs->next);
267 spin_unlock(&vgdev->obj_free_lock);
268 virtio_gpu_array_put_free(objs);
269 spin_lock(&vgdev->obj_free_lock);
270 }
271 spin_unlock(&vgdev->obj_free_lock);
272}