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>
42 virtio_gpu_hide_cursor(struct virtio_gpu_device *vgdev,
43 struct virtio_gpu_output *output)
45 output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
46 output->cursor.resource_id = 0;
47 virtio_gpu_cursor_ping(vgdev, output);
50 static int virtio_gpu_crtc_cursor_set(struct drm_crtc *crtc,
51 struct drm_file *file_priv,
55 int32_t hot_x, int32_t hot_y)
57 struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
58 struct virtio_gpu_output *output =
59 container_of(crtc, struct virtio_gpu_output, crtc);
60 struct drm_gem_object *gobj = NULL;
61 struct virtio_gpu_object *qobj = NULL;
62 struct virtio_gpu_fence *fence = NULL;
66 virtio_gpu_hide_cursor(vgdev, output);
70 /* lookup the cursor */
71 gobj = drm_gem_object_lookup(file_priv, handle);
75 qobj = gem_to_virtio_gpu_obj(gobj);
77 if (!qobj->hw_res_handle) {
82 virtio_gpu_cmd_transfer_to_host_2d(vgdev, qobj->hw_res_handle, 0,
86 ret = virtio_gpu_object_reserve(qobj, false);
88 reservation_object_add_excl_fence(qobj->tbo.resv,
91 virtio_gpu_object_unreserve(qobj);
92 virtio_gpu_object_wait(qobj, false);
95 output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
96 output->cursor.resource_id = cpu_to_le32(qobj->hw_res_handle);
97 output->cursor.hot_x = cpu_to_le32(hot_x);
98 output->cursor.hot_y = cpu_to_le32(hot_y);
99 virtio_gpu_cursor_ping(vgdev, output);
103 drm_gem_object_unreference_unlocked(gobj);
107 static int virtio_gpu_crtc_cursor_move(struct drm_crtc *crtc,
110 struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
111 struct virtio_gpu_output *output =
112 container_of(crtc, struct virtio_gpu_output, crtc);
114 output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_MOVE_CURSOR);
115 output->cursor.pos.x = cpu_to_le32(x);
116 output->cursor.pos.y = cpu_to_le32(y);
117 virtio_gpu_cursor_ping(vgdev, output);
121 static int virtio_gpu_page_flip(struct drm_crtc *crtc,
122 struct drm_framebuffer *fb,
123 struct drm_pending_vblank_event *event,
126 struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
127 struct virtio_gpu_output *output =
128 container_of(crtc, struct virtio_gpu_output, crtc);
129 struct drm_plane *plane = crtc->primary;
130 struct virtio_gpu_framebuffer *vgfb;
131 struct virtio_gpu_object *bo;
132 unsigned long irqflags;
136 vgfb = to_virtio_gpu_framebuffer(plane->fb);
137 bo = gem_to_virtio_gpu_obj(vgfb->obj);
138 handle = bo->hw_res_handle;
140 DRM_DEBUG("handle 0x%x%s, crtc %dx%d\n", handle,
141 bo->dumb ? ", dumb" : "",
142 crtc->mode.hdisplay, crtc->mode.vdisplay);
144 virtio_gpu_cmd_transfer_to_host_2d
146 cpu_to_le32(crtc->mode.hdisplay),
147 cpu_to_le32(crtc->mode.vdisplay),
150 virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
152 crtc->mode.vdisplay, 0, 0);
153 virtio_gpu_cmd_resource_flush(vgdev, handle, 0, 0,
155 crtc->mode.vdisplay);
158 spin_lock_irqsave(&crtc->dev->event_lock, irqflags);
159 drm_send_vblank_event(crtc->dev, -1, event);
160 spin_unlock_irqrestore(&crtc->dev->event_lock, irqflags);
166 static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
167 .cursor_set2 = virtio_gpu_crtc_cursor_set,
168 .cursor_move = virtio_gpu_crtc_cursor_move,
169 .set_config = drm_atomic_helper_set_config,
170 .destroy = drm_crtc_cleanup,
172 .page_flip = virtio_gpu_page_flip,
173 .reset = drm_atomic_helper_crtc_reset,
174 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
175 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
178 static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
180 struct virtio_gpu_framebuffer *virtio_gpu_fb
181 = to_virtio_gpu_framebuffer(fb);
183 if (virtio_gpu_fb->obj)
184 drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
185 drm_framebuffer_cleanup(fb);
186 kfree(virtio_gpu_fb);
190 virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb,
191 struct drm_file *file_priv,
192 unsigned flags, unsigned color,
193 struct drm_clip_rect *clips,
196 struct virtio_gpu_framebuffer *virtio_gpu_fb
197 = to_virtio_gpu_framebuffer(fb);
199 return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
202 static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
203 .destroy = virtio_gpu_user_framebuffer_destroy,
204 .dirty = virtio_gpu_framebuffer_surface_dirty,
208 virtio_gpu_framebuffer_init(struct drm_device *dev,
209 struct virtio_gpu_framebuffer *vgfb,
210 const struct drm_mode_fb_cmd2 *mode_cmd,
211 struct drm_gem_object *obj)
214 struct virtio_gpu_object *bo;
217 bo = gem_to_virtio_gpu_obj(obj);
219 ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
224 drm_helper_mode_fill_fb_struct(&vgfb->base, mode_cmd);
226 spin_lock_init(&vgfb->dirty_lock);
227 vgfb->x1 = vgfb->y1 = INT_MAX;
228 vgfb->x2 = vgfb->y2 = 0;
232 static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
234 struct drm_device *dev = crtc->dev;
235 struct virtio_gpu_device *vgdev = dev->dev_private;
236 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
238 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
240 crtc->mode.vdisplay, 0, 0);
243 static void virtio_gpu_crtc_enable(struct drm_crtc *crtc)
247 static void virtio_gpu_crtc_disable(struct drm_crtc *crtc)
249 struct drm_device *dev = crtc->dev;
250 struct virtio_gpu_device *vgdev = dev->dev_private;
251 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
253 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
256 static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
257 struct drm_crtc_state *state)
262 static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
263 struct drm_crtc_state *old_state)
267 spin_lock_irqsave(&crtc->dev->event_lock, flags);
268 if (crtc->state->event)
269 drm_crtc_send_vblank_event(crtc, crtc->state->event);
270 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
273 static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
274 .enable = virtio_gpu_crtc_enable,
275 .disable = virtio_gpu_crtc_disable,
276 .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
277 .atomic_check = virtio_gpu_crtc_atomic_check,
278 .atomic_flush = virtio_gpu_crtc_atomic_flush,
281 static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
282 struct drm_display_mode *mode,
283 struct drm_display_mode *adjusted_mode)
287 static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
291 static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
295 static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
297 struct virtio_gpu_output *output =
298 drm_connector_to_virtio_gpu_output(connector);
299 struct drm_display_mode *mode = NULL;
300 int count, width, height;
302 width = le32_to_cpu(output->info.r.width);
303 height = le32_to_cpu(output->info.r.height);
304 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
306 if (width == 0 || height == 0) {
309 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
311 DRM_DEBUG("add mode: %dx%d\n", width, height);
312 mode = drm_cvt_mode(connector->dev, width, height, 60,
313 false, false, false);
314 mode->type |= DRM_MODE_TYPE_PREFERRED;
315 drm_mode_probed_add(connector, mode);
322 static int virtio_gpu_conn_mode_valid(struct drm_connector *connector,
323 struct drm_display_mode *mode)
325 struct virtio_gpu_output *output =
326 drm_connector_to_virtio_gpu_output(connector);
329 width = le32_to_cpu(output->info.r.width);
330 height = le32_to_cpu(output->info.r.height);
332 if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
334 if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
336 if (mode->hdisplay <= width && mode->hdisplay >= width - 16 &&
337 mode->vdisplay <= height && mode->vdisplay >= height - 16)
340 DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
344 static struct drm_encoder*
345 virtio_gpu_best_encoder(struct drm_connector *connector)
347 struct virtio_gpu_output *virtio_gpu_output =
348 drm_connector_to_virtio_gpu_output(connector);
350 return &virtio_gpu_output->enc;
353 static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
354 .mode_set = virtio_gpu_enc_mode_set,
355 .enable = virtio_gpu_enc_enable,
356 .disable = virtio_gpu_enc_disable,
359 static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
360 .get_modes = virtio_gpu_conn_get_modes,
361 .mode_valid = virtio_gpu_conn_mode_valid,
362 .best_encoder = virtio_gpu_best_encoder,
365 static enum drm_connector_status virtio_gpu_conn_detect(
366 struct drm_connector *connector,
369 struct virtio_gpu_output *output =
370 drm_connector_to_virtio_gpu_output(connector);
372 if (output->info.enabled)
373 return connector_status_connected;
375 return connector_status_disconnected;
378 static void virtio_gpu_conn_destroy(struct drm_connector *connector)
380 struct virtio_gpu_output *virtio_gpu_output =
381 drm_connector_to_virtio_gpu_output(connector);
383 drm_connector_unregister(connector);
384 drm_connector_cleanup(connector);
385 kfree(virtio_gpu_output);
388 static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
389 .dpms = drm_atomic_helper_connector_dpms,
390 .detect = virtio_gpu_conn_detect,
391 .fill_modes = drm_helper_probe_single_connector_modes,
392 .destroy = virtio_gpu_conn_destroy,
393 .reset = drm_atomic_helper_connector_reset,
394 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
395 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
398 static const struct drm_encoder_funcs virtio_gpu_enc_funcs = {
399 .destroy = drm_encoder_cleanup,
402 static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
404 struct drm_device *dev = vgdev->ddev;
405 struct virtio_gpu_output *output = vgdev->outputs + index;
406 struct drm_connector *connector = &output->conn;
407 struct drm_encoder *encoder = &output->enc;
408 struct drm_crtc *crtc = &output->crtc;
409 struct drm_plane *plane;
411 output->index = index;
413 output->info.enabled = cpu_to_le32(true);
414 output->info.r.width = cpu_to_le32(XRES_DEF);
415 output->info.r.height = cpu_to_le32(YRES_DEF);
418 plane = virtio_gpu_plane_init(vgdev, index);
420 return PTR_ERR(plane);
421 drm_crtc_init_with_planes(dev, crtc, plane, NULL,
422 &virtio_gpu_crtc_funcs, NULL);
423 drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
426 drm_connector_init(dev, connector, &virtio_gpu_connector_funcs,
427 DRM_MODE_CONNECTOR_VIRTUAL);
428 drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs);
430 drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs,
431 DRM_MODE_ENCODER_VIRTUAL, NULL);
432 drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
433 encoder->possible_crtcs = 1 << index;
435 drm_mode_connector_attach_encoder(connector, encoder);
436 drm_connector_register(connector);
440 static struct drm_framebuffer *
441 virtio_gpu_user_framebuffer_create(struct drm_device *dev,
442 struct drm_file *file_priv,
443 const struct drm_mode_fb_cmd2 *mode_cmd)
445 struct drm_gem_object *obj = NULL;
446 struct virtio_gpu_framebuffer *virtio_gpu_fb;
449 /* lookup object associated with res handle */
450 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
452 return ERR_PTR(-EINVAL);
454 virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
455 if (virtio_gpu_fb == NULL)
456 return ERR_PTR(-ENOMEM);
458 ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
460 kfree(virtio_gpu_fb);
462 drm_gem_object_unreference_unlocked(obj);
466 return &virtio_gpu_fb->base;
469 static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
470 .fb_create = virtio_gpu_user_framebuffer_create,
471 .atomic_check = drm_atomic_helper_check,
472 .atomic_commit = drm_atomic_helper_commit,
475 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
479 drm_mode_config_init(vgdev->ddev);
480 vgdev->ddev->mode_config.funcs = (void *)&virtio_gpu_mode_funcs;
482 /* modes will be validated against the framebuffer size */
483 vgdev->ddev->mode_config.min_width = XRES_MIN;
484 vgdev->ddev->mode_config.min_height = YRES_MIN;
485 vgdev->ddev->mode_config.max_width = XRES_MAX;
486 vgdev->ddev->mode_config.max_height = YRES_MAX;
488 for (i = 0 ; i < vgdev->num_scanouts; ++i)
489 vgdev_output_init(vgdev, i);
491 drm_mode_config_reset(vgdev->ddev);
495 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
497 virtio_gpu_fbdev_fini(vgdev);
498 drm_mode_config_cleanup(vgdev->ddev);