2 * Copyright (C) 2015 Red Hat, Inc.
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:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
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.
28 #include "virtgpu_drv.h"
29 #include <drm/drm_crtc_helper.h>
30 #include <drm/drm_atomic_helper.h>
41 static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
42 .set_config = drm_atomic_helper_set_config,
43 .destroy = drm_crtc_cleanup,
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,
51 static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
53 struct virtio_gpu_framebuffer *virtio_gpu_fb
54 = to_virtio_gpu_framebuffer(fb);
56 drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
57 drm_framebuffer_cleanup(fb);
62 virtio_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,
68 struct virtio_gpu_framebuffer *virtio_gpu_fb
69 = to_virtio_gpu_framebuffer(fb);
71 return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
74 static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
75 .destroy = virtio_gpu_user_framebuffer_destroy,
76 .dirty = virtio_gpu_framebuffer_surface_dirty,
80 virtio_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)
86 struct virtio_gpu_object *bo;
89 bo = gem_to_virtio_gpu_obj(obj);
91 drm_helper_mode_fill_fb_struct(dev, &vgfb->base, mode_cmd);
93 ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
99 spin_lock_init(&vgfb->dirty_lock);
100 vgfb->x1 = vgfb->y1 = INT_MAX;
101 vgfb->x2 = vgfb->y2 = 0;
105 static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
107 struct drm_device *dev = crtc->dev;
108 struct virtio_gpu_device *vgdev = dev->dev_private;
109 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
111 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
113 crtc->mode.vdisplay, 0, 0);
116 static void virtio_gpu_crtc_atomic_enable(struct drm_crtc *crtc,
117 struct drm_crtc_state *old_state)
121 static void virtio_gpu_crtc_atomic_disable(struct drm_crtc *crtc,
122 struct drm_crtc_state *old_state)
124 struct drm_device *dev = crtc->dev;
125 struct virtio_gpu_device *vgdev = dev->dev_private;
126 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
128 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
131 static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
132 struct drm_crtc_state *state)
137 static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
138 struct drm_crtc_state *old_state)
142 spin_lock_irqsave(&crtc->dev->event_lock, flags);
143 if (crtc->state->event)
144 drm_crtc_send_vblank_event(crtc, crtc->state->event);
145 crtc->state->event = NULL;
146 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
149 static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
150 .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
151 .atomic_check = virtio_gpu_crtc_atomic_check,
152 .atomic_flush = virtio_gpu_crtc_atomic_flush,
153 .atomic_enable = virtio_gpu_crtc_atomic_enable,
154 .atomic_disable = virtio_gpu_crtc_atomic_disable,
157 static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
158 struct drm_display_mode *mode,
159 struct drm_display_mode *adjusted_mode)
163 static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
167 static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
171 static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
173 struct virtio_gpu_output *output =
174 drm_connector_to_virtio_gpu_output(connector);
175 struct drm_display_mode *mode = NULL;
176 int count, width, height;
178 width = le32_to_cpu(output->info.r.width);
179 height = le32_to_cpu(output->info.r.height);
180 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
182 if (width == 0 || height == 0) {
185 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
187 DRM_DEBUG("add mode: %dx%d\n", width, height);
188 mode = drm_cvt_mode(connector->dev, width, height, 60,
189 false, false, false);
192 mode->type |= DRM_MODE_TYPE_PREFERRED;
193 drm_mode_probed_add(connector, mode);
200 static int virtio_gpu_conn_mode_valid(struct drm_connector *connector,
201 struct drm_display_mode *mode)
203 struct virtio_gpu_output *output =
204 drm_connector_to_virtio_gpu_output(connector);
207 width = le32_to_cpu(output->info.r.width);
208 height = le32_to_cpu(output->info.r.height);
210 if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
212 if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
214 if (mode->hdisplay <= width && mode->hdisplay >= width - 16 &&
215 mode->vdisplay <= height && mode->vdisplay >= height - 16)
218 DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
222 static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
223 .mode_set = virtio_gpu_enc_mode_set,
224 .enable = virtio_gpu_enc_enable,
225 .disable = virtio_gpu_enc_disable,
228 static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
229 .get_modes = virtio_gpu_conn_get_modes,
230 .mode_valid = virtio_gpu_conn_mode_valid,
233 static enum drm_connector_status virtio_gpu_conn_detect(
234 struct drm_connector *connector,
237 struct virtio_gpu_output *output =
238 drm_connector_to_virtio_gpu_output(connector);
240 if (output->info.enabled)
241 return connector_status_connected;
243 return connector_status_disconnected;
246 static void virtio_gpu_conn_destroy(struct drm_connector *connector)
248 struct virtio_gpu_output *virtio_gpu_output =
249 drm_connector_to_virtio_gpu_output(connector);
251 drm_connector_unregister(connector);
252 drm_connector_cleanup(connector);
253 kfree(virtio_gpu_output);
256 static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
257 .detect = virtio_gpu_conn_detect,
258 .fill_modes = drm_helper_probe_single_connector_modes,
259 .destroy = virtio_gpu_conn_destroy,
260 .reset = drm_atomic_helper_connector_reset,
261 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
262 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
265 static const struct drm_encoder_funcs virtio_gpu_enc_funcs = {
266 .destroy = drm_encoder_cleanup,
269 static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
271 struct drm_device *dev = vgdev->ddev;
272 struct virtio_gpu_output *output = vgdev->outputs + index;
273 struct drm_connector *connector = &output->conn;
274 struct drm_encoder *encoder = &output->enc;
275 struct drm_crtc *crtc = &output->crtc;
276 struct drm_plane *primary, *cursor;
278 output->index = index;
280 output->info.enabled = cpu_to_le32(true);
281 output->info.r.width = cpu_to_le32(XRES_DEF);
282 output->info.r.height = cpu_to_le32(YRES_DEF);
285 primary = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_PRIMARY, index);
287 return PTR_ERR(primary);
288 cursor = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_CURSOR, index);
290 return PTR_ERR(cursor);
291 drm_crtc_init_with_planes(dev, crtc, primary, cursor,
292 &virtio_gpu_crtc_funcs, NULL);
293 drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
294 primary->crtc = crtc;
297 drm_connector_init(dev, connector, &virtio_gpu_connector_funcs,
298 DRM_MODE_CONNECTOR_VIRTUAL);
299 drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs);
301 drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs,
302 DRM_MODE_ENCODER_VIRTUAL, NULL);
303 drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
304 encoder->possible_crtcs = 1 << index;
306 drm_mode_connector_attach_encoder(connector, encoder);
307 drm_connector_register(connector);
311 static struct drm_framebuffer *
312 virtio_gpu_user_framebuffer_create(struct drm_device *dev,
313 struct drm_file *file_priv,
314 const struct drm_mode_fb_cmd2 *mode_cmd)
316 struct drm_gem_object *obj = NULL;
317 struct virtio_gpu_framebuffer *virtio_gpu_fb;
320 /* lookup object associated with res handle */
321 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
323 return ERR_PTR(-EINVAL);
325 virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
326 if (virtio_gpu_fb == NULL)
327 return ERR_PTR(-ENOMEM);
329 ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
331 kfree(virtio_gpu_fb);
332 drm_gem_object_unreference_unlocked(obj);
336 return &virtio_gpu_fb->base;
339 static void vgdev_atomic_commit_tail(struct drm_atomic_state *state)
341 struct drm_device *dev = state->dev;
343 drm_atomic_helper_commit_modeset_disables(dev, state);
344 drm_atomic_helper_commit_modeset_enables(dev, state);
345 drm_atomic_helper_commit_planes(dev, state, 0);
347 drm_atomic_helper_commit_hw_done(state);
349 drm_atomic_helper_wait_for_vblanks(dev, state);
350 drm_atomic_helper_cleanup_planes(dev, state);
353 static const struct drm_mode_config_helper_funcs virtio_mode_config_helpers = {
354 .atomic_commit_tail = vgdev_atomic_commit_tail,
357 static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
358 .fb_create = virtio_gpu_user_framebuffer_create,
359 .atomic_check = drm_atomic_helper_check,
360 .atomic_commit = drm_atomic_helper_commit,
363 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
367 drm_mode_config_init(vgdev->ddev);
368 vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
369 vgdev->ddev->mode_config.helper_private = &virtio_mode_config_helpers;
371 /* modes will be validated against the framebuffer size */
372 vgdev->ddev->mode_config.min_width = XRES_MIN;
373 vgdev->ddev->mode_config.min_height = YRES_MIN;
374 vgdev->ddev->mode_config.max_width = XRES_MAX;
375 vgdev->ddev->mode_config.max_height = YRES_MAX;
377 for (i = 0 ; i < vgdev->num_scanouts; ++i)
378 vgdev_output_init(vgdev, i);
380 drm_mode_config_reset(vgdev->ddev);
384 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
386 virtio_gpu_fbdev_fini(vgdev);
387 drm_mode_config_cleanup(vgdev->ddev);