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1/*
2 * Copyright (C) 2015 Red Hat, Inc.
3 * All Rights Reserved.
4 *
5 * Authors:
6 * Dave Airlie
7 * Alon Levy
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 */
27
28#include <drm/drm_atomic_helper.h>
29#include <drm/drm_damage_helper.h>
30#include <drm/drm_edid.h>
31#include <drm/drm_fourcc.h>
32#include <drm/drm_gem_framebuffer_helper.h>
33#include <drm/drm_probe_helper.h>
34#include <drm/drm_simple_kms_helper.h>
35
36#include "virtgpu_drv.h"
37
38#define XRES_MIN 32
39#define YRES_MIN 32
40
41#define XRES_DEF 1024
42#define YRES_DEF 768
43
44#define XRES_MAX 8192
45#define YRES_MAX 8192
46
47#define drm_connector_to_virtio_gpu_output(x) \
48 container_of(x, struct virtio_gpu_output, conn)
49
50static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
51 .set_config = drm_atomic_helper_set_config,
52 .destroy = drm_crtc_cleanup,
53
54 .page_flip = drm_atomic_helper_page_flip,
55 .reset = drm_atomic_helper_crtc_reset,
56 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
57 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
58};
59
60static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
61 .create_handle = drm_gem_fb_create_handle,
62 .destroy = drm_gem_fb_destroy,
63 .dirty = drm_atomic_helper_dirtyfb,
64};
65
66static int
67virtio_gpu_framebuffer_init(struct drm_device *dev,
68 struct virtio_gpu_framebuffer *vgfb,
69 const struct drm_mode_fb_cmd2 *mode_cmd,
70 struct drm_gem_object *obj)
71{
72 int ret;
73
74 vgfb->base.obj[0] = obj;
75
76 drm_helper_mode_fill_fb_struct(dev, &vgfb->base, mode_cmd);
77
78 ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
79 if (ret) {
80 vgfb->base.obj[0] = NULL;
81 return ret;
82 }
83 return 0;
84}
85
86static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
87{
88 struct drm_device *dev = crtc->dev;
89 struct virtio_gpu_device *vgdev = dev->dev_private;
90 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
91
92 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
93 crtc->mode.hdisplay,
94 crtc->mode.vdisplay, 0, 0);
95 virtio_gpu_notify(vgdev);
96}
97
98static void virtio_gpu_crtc_atomic_enable(struct drm_crtc *crtc,
99 struct drm_atomic_state *state)
100{
101}
102
103static void virtio_gpu_crtc_atomic_disable(struct drm_crtc *crtc,
104 struct drm_atomic_state *state)
105{
106 struct drm_device *dev = crtc->dev;
107 struct virtio_gpu_device *vgdev = dev->dev_private;
108 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
109
110 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
111 virtio_gpu_notify(vgdev);
112}
113
114static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
115 struct drm_atomic_state *state)
116{
117 return 0;
118}
119
120static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
121 struct drm_atomic_state *state)
122{
123 struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
124 crtc);
125 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
126
127 /*
128 * virtio-gpu can't do modeset and plane update operations
129 * independent from each other. So the actual modeset happens
130 * in the plane update callback, and here we just check
131 * whenever we must force the modeset.
132 */
133 if (drm_atomic_crtc_needs_modeset(crtc_state)) {
134 output->needs_modeset = true;
135 }
136}
137
138static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
139 .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
140 .atomic_check = virtio_gpu_crtc_atomic_check,
141 .atomic_flush = virtio_gpu_crtc_atomic_flush,
142 .atomic_enable = virtio_gpu_crtc_atomic_enable,
143 .atomic_disable = virtio_gpu_crtc_atomic_disable,
144};
145
146static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
147 struct drm_display_mode *mode,
148 struct drm_display_mode *adjusted_mode)
149{
150}
151
152static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
153{
154}
155
156static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
157{
158}
159
160static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
161{
162 struct virtio_gpu_output *output =
163 drm_connector_to_virtio_gpu_output(connector);
164 struct drm_display_mode *mode = NULL;
165 int count, width, height;
166
167 count = drm_edid_connector_add_modes(connector);
168 if (count)
169 return count;
170
171 width = le32_to_cpu(output->info.r.width);
172 height = le32_to_cpu(output->info.r.height);
173 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
174
175 if (width == 0 || height == 0) {
176 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
177 } else {
178 DRM_DEBUG("add mode: %dx%d\n", width, height);
179 mode = drm_cvt_mode(connector->dev, width, height, 60,
180 false, false, false);
181 if (!mode)
182 return count;
183 mode->type |= DRM_MODE_TYPE_PREFERRED;
184 drm_mode_probed_add(connector, mode);
185 count++;
186 }
187
188 return count;
189}
190
191static enum drm_mode_status virtio_gpu_conn_mode_valid(struct drm_connector *connector,
192 struct drm_display_mode *mode)
193{
194 struct virtio_gpu_output *output =
195 drm_connector_to_virtio_gpu_output(connector);
196 int width, height;
197
198 width = le32_to_cpu(output->info.r.width);
199 height = le32_to_cpu(output->info.r.height);
200
201 if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
202 return MODE_OK;
203 if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
204 return MODE_OK;
205 if (mode->hdisplay <= width && mode->hdisplay >= width - 16 &&
206 mode->vdisplay <= height && mode->vdisplay >= height - 16)
207 return MODE_OK;
208
209 DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
210 return MODE_BAD;
211}
212
213static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
214 .mode_set = virtio_gpu_enc_mode_set,
215 .enable = virtio_gpu_enc_enable,
216 .disable = virtio_gpu_enc_disable,
217};
218
219static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
220 .get_modes = virtio_gpu_conn_get_modes,
221 .mode_valid = virtio_gpu_conn_mode_valid,
222};
223
224static enum drm_connector_status virtio_gpu_conn_detect(
225 struct drm_connector *connector,
226 bool force)
227{
228 struct virtio_gpu_output *output =
229 drm_connector_to_virtio_gpu_output(connector);
230
231 if (output->info.enabled)
232 return connector_status_connected;
233 else
234 return connector_status_disconnected;
235}
236
237static void virtio_gpu_conn_destroy(struct drm_connector *connector)
238{
239 drm_connector_unregister(connector);
240 drm_connector_cleanup(connector);
241}
242
243static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
244 .detect = virtio_gpu_conn_detect,
245 .fill_modes = drm_helper_probe_single_connector_modes,
246 .destroy = virtio_gpu_conn_destroy,
247 .reset = drm_atomic_helper_connector_reset,
248 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
249 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
250};
251
252static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
253{
254 struct drm_device *dev = vgdev->ddev;
255 struct virtio_gpu_output *output = vgdev->outputs + index;
256 struct drm_connector *connector = &output->conn;
257 struct drm_encoder *encoder = &output->enc;
258 struct drm_crtc *crtc = &output->crtc;
259 struct drm_plane *primary, *cursor;
260
261 output->index = index;
262 if (index == 0) {
263 output->info.enabled = cpu_to_le32(true);
264 output->info.r.width = cpu_to_le32(XRES_DEF);
265 output->info.r.height = cpu_to_le32(YRES_DEF);
266 }
267
268 primary = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_PRIMARY, index);
269 if (IS_ERR(primary))
270 return PTR_ERR(primary);
271 cursor = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_CURSOR, index);
272 if (IS_ERR(cursor))
273 return PTR_ERR(cursor);
274 drm_crtc_init_with_planes(dev, crtc, primary, cursor,
275 &virtio_gpu_crtc_funcs, NULL);
276 drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
277
278 drm_connector_init(dev, connector, &virtio_gpu_connector_funcs,
279 DRM_MODE_CONNECTOR_VIRTUAL);
280 drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs);
281 if (vgdev->has_edid)
282 drm_connector_attach_edid_property(connector);
283
284 drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL);
285 drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
286 encoder->possible_crtcs = 1 << index;
287
288 drm_connector_attach_encoder(connector, encoder);
289 drm_connector_register(connector);
290 return 0;
291}
292
293static struct drm_framebuffer *
294virtio_gpu_user_framebuffer_create(struct drm_device *dev,
295 struct drm_file *file_priv,
296 const struct drm_mode_fb_cmd2 *mode_cmd)
297{
298 struct drm_gem_object *obj = NULL;
299 struct virtio_gpu_framebuffer *virtio_gpu_fb;
300 int ret;
301
302 if (mode_cmd->pixel_format != DRM_FORMAT_HOST_XRGB8888 &&
303 mode_cmd->pixel_format != DRM_FORMAT_HOST_ARGB8888)
304 return ERR_PTR(-ENOENT);
305
306 /* lookup object associated with res handle */
307 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
308 if (!obj)
309 return ERR_PTR(-EINVAL);
310
311 virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
312 if (virtio_gpu_fb == NULL) {
313 drm_gem_object_put(obj);
314 return ERR_PTR(-ENOMEM);
315 }
316
317 ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
318 if (ret) {
319 kfree(virtio_gpu_fb);
320 drm_gem_object_put(obj);
321 return NULL;
322 }
323
324 return &virtio_gpu_fb->base;
325}
326
327static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
328 .fb_create = virtio_gpu_user_framebuffer_create,
329 .atomic_check = drm_atomic_helper_check,
330 .atomic_commit = drm_atomic_helper_commit,
331};
332
333int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
334{
335 int i, ret;
336
337 if (!vgdev->num_scanouts)
338 return 0;
339
340 ret = drmm_mode_config_init(vgdev->ddev);
341 if (ret)
342 return ret;
343
344 vgdev->ddev->mode_config.quirk_addfb_prefer_host_byte_order = true;
345 vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
346
347 /* modes will be validated against the framebuffer size */
348 vgdev->ddev->mode_config.min_width = XRES_MIN;
349 vgdev->ddev->mode_config.min_height = YRES_MIN;
350 vgdev->ddev->mode_config.max_width = XRES_MAX;
351 vgdev->ddev->mode_config.max_height = YRES_MAX;
352
353 vgdev->ddev->mode_config.fb_modifiers_not_supported = true;
354
355 for (i = 0 ; i < vgdev->num_scanouts; ++i)
356 vgdev_output_init(vgdev, i);
357
358 drm_mode_config_reset(vgdev->ddev);
359 return 0;
360}
361
362void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
363{
364 int i;
365
366 if (!vgdev->num_scanouts)
367 return;
368
369 for (i = 0 ; i < vgdev->num_scanouts; ++i)
370 drm_edid_free(vgdev->outputs[i].drm_edid);
371}
1/*
2 * Copyright (C) 2015 Red Hat, Inc.
3 * All Rights Reserved.
4 *
5 * Authors:
6 * Dave Airlie
7 * Alon Levy
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 */
27
28#include "virtgpu_drv.h"
29#include <drm/drm_crtc_helper.h>
30#include <drm/drm_atomic_helper.h>
31
32#define XRES_MIN 32
33#define YRES_MIN 32
34
35#define XRES_DEF 1024
36#define YRES_DEF 768
37
38#define XRES_MAX 8192
39#define YRES_MAX 8192
40
41static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
42 .set_config = drm_atomic_helper_set_config,
43 .destroy = drm_crtc_cleanup,
44
45 .page_flip = drm_atomic_helper_page_flip,
46 .reset = drm_atomic_helper_crtc_reset,
47 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
48 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
49};
50
51static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
52{
53 struct virtio_gpu_framebuffer *virtio_gpu_fb
54 = to_virtio_gpu_framebuffer(fb);
55
56 drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
57 drm_framebuffer_cleanup(fb);
58 kfree(virtio_gpu_fb);
59}
60
61static int
62virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb,
63 struct drm_file *file_priv,
64 unsigned flags, unsigned color,
65 struct drm_clip_rect *clips,
66 unsigned num_clips)
67{
68 struct virtio_gpu_framebuffer *virtio_gpu_fb
69 = to_virtio_gpu_framebuffer(fb);
70
71 return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
72}
73
74static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
75 .destroy = virtio_gpu_user_framebuffer_destroy,
76 .dirty = virtio_gpu_framebuffer_surface_dirty,
77};
78
79int
80virtio_gpu_framebuffer_init(struct drm_device *dev,
81 struct virtio_gpu_framebuffer *vgfb,
82 const struct drm_mode_fb_cmd2 *mode_cmd,
83 struct drm_gem_object *obj)
84{
85 int ret;
86 struct virtio_gpu_object *bo;
87 vgfb->obj = obj;
88
89 bo = gem_to_virtio_gpu_obj(obj);
90
91 ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
92 if (ret) {
93 vgfb->obj = NULL;
94 return ret;
95 }
96 drm_helper_mode_fill_fb_struct(&vgfb->base, mode_cmd);
97
98 spin_lock_init(&vgfb->dirty_lock);
99 vgfb->x1 = vgfb->y1 = INT_MAX;
100 vgfb->x2 = vgfb->y2 = 0;
101 return 0;
102}
103
104static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
105{
106 struct drm_device *dev = crtc->dev;
107 struct virtio_gpu_device *vgdev = dev->dev_private;
108 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
109
110 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
111 crtc->mode.hdisplay,
112 crtc->mode.vdisplay, 0, 0);
113}
114
115static void virtio_gpu_crtc_enable(struct drm_crtc *crtc)
116{
117}
118
119static void virtio_gpu_crtc_disable(struct drm_crtc *crtc)
120{
121 struct drm_device *dev = crtc->dev;
122 struct virtio_gpu_device *vgdev = dev->dev_private;
123 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
124
125 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
126}
127
128static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
129 struct drm_crtc_state *state)
130{
131 return 0;
132}
133
134static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
135 struct drm_crtc_state *old_state)
136{
137 unsigned long flags;
138
139 spin_lock_irqsave(&crtc->dev->event_lock, flags);
140 if (crtc->state->event)
141 drm_crtc_send_vblank_event(crtc, crtc->state->event);
142 crtc->state->event = NULL;
143 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
144}
145
146static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
147 .enable = virtio_gpu_crtc_enable,
148 .disable = virtio_gpu_crtc_disable,
149 .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
150 .atomic_check = virtio_gpu_crtc_atomic_check,
151 .atomic_flush = virtio_gpu_crtc_atomic_flush,
152};
153
154static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
155 struct drm_display_mode *mode,
156 struct drm_display_mode *adjusted_mode)
157{
158}
159
160static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
161{
162}
163
164static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
165{
166}
167
168static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
169{
170 struct virtio_gpu_output *output =
171 drm_connector_to_virtio_gpu_output(connector);
172 struct drm_display_mode *mode = NULL;
173 int count, width, height;
174
175 width = le32_to_cpu(output->info.r.width);
176 height = le32_to_cpu(output->info.r.height);
177 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
178
179 if (width == 0 || height == 0) {
180 width = XRES_DEF;
181 height = YRES_DEF;
182 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
183 } else {
184 DRM_DEBUG("add mode: %dx%d\n", width, height);
185 mode = drm_cvt_mode(connector->dev, width, height, 60,
186 false, false, false);
187 mode->type |= DRM_MODE_TYPE_PREFERRED;
188 drm_mode_probed_add(connector, mode);
189 count++;
190 }
191
192 return count;
193}
194
195static int virtio_gpu_conn_mode_valid(struct drm_connector *connector,
196 struct drm_display_mode *mode)
197{
198 struct virtio_gpu_output *output =
199 drm_connector_to_virtio_gpu_output(connector);
200 int width, height;
201
202 width = le32_to_cpu(output->info.r.width);
203 height = le32_to_cpu(output->info.r.height);
204
205 if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
206 return MODE_OK;
207 if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
208 return MODE_OK;
209 if (mode->hdisplay <= width && mode->hdisplay >= width - 16 &&
210 mode->vdisplay <= height && mode->vdisplay >= height - 16)
211 return MODE_OK;
212
213 DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
214 return MODE_BAD;
215}
216
217static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
218 .mode_set = virtio_gpu_enc_mode_set,
219 .enable = virtio_gpu_enc_enable,
220 .disable = virtio_gpu_enc_disable,
221};
222
223static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
224 .get_modes = virtio_gpu_conn_get_modes,
225 .mode_valid = virtio_gpu_conn_mode_valid,
226};
227
228static enum drm_connector_status virtio_gpu_conn_detect(
229 struct drm_connector *connector,
230 bool force)
231{
232 struct virtio_gpu_output *output =
233 drm_connector_to_virtio_gpu_output(connector);
234
235 if (output->info.enabled)
236 return connector_status_connected;
237 else
238 return connector_status_disconnected;
239}
240
241static void virtio_gpu_conn_destroy(struct drm_connector *connector)
242{
243 struct virtio_gpu_output *virtio_gpu_output =
244 drm_connector_to_virtio_gpu_output(connector);
245
246 drm_connector_unregister(connector);
247 drm_connector_cleanup(connector);
248 kfree(virtio_gpu_output);
249}
250
251static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
252 .dpms = drm_atomic_helper_connector_dpms,
253 .detect = virtio_gpu_conn_detect,
254 .fill_modes = drm_helper_probe_single_connector_modes,
255 .destroy = virtio_gpu_conn_destroy,
256 .reset = drm_atomic_helper_connector_reset,
257 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
258 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
259};
260
261static const struct drm_encoder_funcs virtio_gpu_enc_funcs = {
262 .destroy = drm_encoder_cleanup,
263};
264
265static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
266{
267 struct drm_device *dev = vgdev->ddev;
268 struct virtio_gpu_output *output = vgdev->outputs + index;
269 struct drm_connector *connector = &output->conn;
270 struct drm_encoder *encoder = &output->enc;
271 struct drm_crtc *crtc = &output->crtc;
272 struct drm_plane *primary, *cursor;
273
274 output->index = index;
275 if (index == 0) {
276 output->info.enabled = cpu_to_le32(true);
277 output->info.r.width = cpu_to_le32(XRES_DEF);
278 output->info.r.height = cpu_to_le32(YRES_DEF);
279 }
280
281 primary = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_PRIMARY, index);
282 if (IS_ERR(primary))
283 return PTR_ERR(primary);
284 cursor = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_CURSOR, index);
285 if (IS_ERR(cursor))
286 return PTR_ERR(cursor);
287 drm_crtc_init_with_planes(dev, crtc, primary, cursor,
288 &virtio_gpu_crtc_funcs, NULL);
289 drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
290 primary->crtc = crtc;
291 cursor->crtc = crtc;
292
293 drm_connector_init(dev, connector, &virtio_gpu_connector_funcs,
294 DRM_MODE_CONNECTOR_VIRTUAL);
295 drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs);
296
297 drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs,
298 DRM_MODE_ENCODER_VIRTUAL, NULL);
299 drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
300 encoder->possible_crtcs = 1 << index;
301
302 drm_mode_connector_attach_encoder(connector, encoder);
303 drm_connector_register(connector);
304 return 0;
305}
306
307static struct drm_framebuffer *
308virtio_gpu_user_framebuffer_create(struct drm_device *dev,
309 struct drm_file *file_priv,
310 const struct drm_mode_fb_cmd2 *mode_cmd)
311{
312 struct drm_gem_object *obj = NULL;
313 struct virtio_gpu_framebuffer *virtio_gpu_fb;
314 int ret;
315
316 /* lookup object associated with res handle */
317 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
318 if (!obj)
319 return ERR_PTR(-EINVAL);
320
321 virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
322 if (virtio_gpu_fb == NULL)
323 return ERR_PTR(-ENOMEM);
324
325 ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
326 if (ret) {
327 kfree(virtio_gpu_fb);
328 drm_gem_object_unreference_unlocked(obj);
329 return NULL;
330 }
331
332 return &virtio_gpu_fb->base;
333}
334
335static void vgdev_atomic_commit_tail(struct drm_atomic_state *state)
336{
337 struct drm_device *dev = state->dev;
338
339 drm_atomic_helper_commit_modeset_disables(dev, state);
340 drm_atomic_helper_commit_modeset_enables(dev, state);
341 drm_atomic_helper_commit_planes(dev, state, 0);
342
343 drm_atomic_helper_commit_hw_done(state);
344
345 drm_atomic_helper_wait_for_vblanks(dev, state);
346 drm_atomic_helper_cleanup_planes(dev, state);
347}
348
349static struct drm_mode_config_helper_funcs virtio_mode_config_helpers = {
350 .atomic_commit_tail = vgdev_atomic_commit_tail,
351};
352
353static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
354 .fb_create = virtio_gpu_user_framebuffer_create,
355 .atomic_check = drm_atomic_helper_check,
356 .atomic_commit = drm_atomic_helper_commit,
357};
358
359int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
360{
361 int i;
362
363 drm_mode_config_init(vgdev->ddev);
364 vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
365 vgdev->ddev->mode_config.helper_private = &virtio_mode_config_helpers;
366
367 /* modes will be validated against the framebuffer size */
368 vgdev->ddev->mode_config.min_width = XRES_MIN;
369 vgdev->ddev->mode_config.min_height = YRES_MIN;
370 vgdev->ddev->mode_config.max_width = XRES_MAX;
371 vgdev->ddev->mode_config.max_height = YRES_MAX;
372
373 for (i = 0 ; i < vgdev->num_scanouts; ++i)
374 vgdev_output_init(vgdev, i);
375
376 drm_mode_config_reset(vgdev->ddev);
377 return 0;
378}
379
380void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
381{
382 virtio_gpu_fbdev_fini(vgdev);
383 drm_mode_config_cleanup(vgdev->ddev);
384}