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
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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>
31 #include <drm/drm_gem_framebuffer_helper.h>
42 static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
43 .set_config = drm_atomic_helper_set_config,
44 .destroy = drm_crtc_cleanup,
46 .page_flip = drm_atomic_helper_page_flip,
47 .reset = drm_atomic_helper_crtc_reset,
48 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
49 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
53 virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb,
54 struct drm_file *file_priv,
55 unsigned int flags, unsigned int color,
56 struct drm_clip_rect *clips,
57 unsigned int num_clips)
59 struct virtio_gpu_framebuffer *virtio_gpu_fb
60 = to_virtio_gpu_framebuffer(fb);
62 return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
65 static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
66 .create_handle = drm_gem_fb_create_handle,
67 .destroy = drm_gem_fb_destroy,
68 .dirty = virtio_gpu_framebuffer_surface_dirty,
72 virtio_gpu_framebuffer_init(struct drm_device *dev,
73 struct virtio_gpu_framebuffer *vgfb,
74 const struct drm_mode_fb_cmd2 *mode_cmd,
75 struct drm_gem_object *obj)
79 vgfb->base.obj[0] = obj;
81 drm_helper_mode_fill_fb_struct(dev, &vgfb->base, mode_cmd);
83 ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
85 vgfb->base.obj[0] = NULL;
89 spin_lock_init(&vgfb->dirty_lock);
90 vgfb->x1 = vgfb->y1 = INT_MAX;
91 vgfb->x2 = vgfb->y2 = 0;
95 static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
97 struct drm_device *dev = crtc->dev;
98 struct virtio_gpu_device *vgdev = dev->dev_private;
99 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
101 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
103 crtc->mode.vdisplay, 0, 0);
106 static void virtio_gpu_crtc_atomic_enable(struct drm_crtc *crtc,
107 struct drm_crtc_state *old_state)
109 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
111 output->enabled = true;
114 static void virtio_gpu_crtc_atomic_disable(struct drm_crtc *crtc,
115 struct drm_crtc_state *old_state)
117 struct drm_device *dev = crtc->dev;
118 struct virtio_gpu_device *vgdev = dev->dev_private;
119 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
121 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
122 output->enabled = false;
125 static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
126 struct drm_crtc_state *state)
131 static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
132 struct drm_crtc_state *old_state)
136 spin_lock_irqsave(&crtc->dev->event_lock, flags);
137 if (crtc->state->event)
138 drm_crtc_send_vblank_event(crtc, crtc->state->event);
139 crtc->state->event = NULL;
140 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
143 static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
144 .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
145 .atomic_check = virtio_gpu_crtc_atomic_check,
146 .atomic_flush = virtio_gpu_crtc_atomic_flush,
147 .atomic_enable = virtio_gpu_crtc_atomic_enable,
148 .atomic_disable = virtio_gpu_crtc_atomic_disable,
151 static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
152 struct drm_display_mode *mode,
153 struct drm_display_mode *adjusted_mode)
157 static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
161 static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
165 static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
167 struct virtio_gpu_output *output =
168 drm_connector_to_virtio_gpu_output(connector);
169 struct drm_display_mode *mode = NULL;
170 int count, width, height;
173 count = drm_add_edid_modes(connector, output->edid);
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);
190 mode->type |= DRM_MODE_TYPE_PREFERRED;
191 drm_mode_probed_add(connector, mode);
198 static enum drm_mode_status virtio_gpu_conn_mode_valid(struct drm_connector *connector,
199 struct drm_display_mode *mode)
201 struct virtio_gpu_output *output =
202 drm_connector_to_virtio_gpu_output(connector);
205 width = le32_to_cpu(output->info.r.width);
206 height = le32_to_cpu(output->info.r.height);
208 if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
210 if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
212 if (mode->hdisplay <= width && mode->hdisplay >= width - 16 &&
213 mode->vdisplay <= height && mode->vdisplay >= height - 16)
216 DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
220 static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
221 .mode_set = virtio_gpu_enc_mode_set,
222 .enable = virtio_gpu_enc_enable,
223 .disable = virtio_gpu_enc_disable,
226 static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
227 .get_modes = virtio_gpu_conn_get_modes,
228 .mode_valid = virtio_gpu_conn_mode_valid,
231 static enum drm_connector_status virtio_gpu_conn_detect(
232 struct drm_connector *connector,
235 struct virtio_gpu_output *output =
236 drm_connector_to_virtio_gpu_output(connector);
238 if (output->info.enabled)
239 return connector_status_connected;
241 return connector_status_disconnected;
244 static void virtio_gpu_conn_destroy(struct drm_connector *connector)
246 struct virtio_gpu_output *virtio_gpu_output =
247 drm_connector_to_virtio_gpu_output(connector);
249 drm_connector_unregister(connector);
250 drm_connector_cleanup(connector);
251 kfree(virtio_gpu_output);
254 static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
255 .detect = virtio_gpu_conn_detect,
256 .fill_modes = drm_helper_probe_single_connector_modes,
257 .destroy = virtio_gpu_conn_destroy,
258 .reset = drm_atomic_helper_connector_reset,
259 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
260 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
263 static const struct drm_encoder_funcs virtio_gpu_enc_funcs = {
264 .destroy = drm_encoder_cleanup,
267 static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
269 struct drm_device *dev = vgdev->ddev;
270 struct virtio_gpu_output *output = vgdev->outputs + index;
271 struct drm_connector *connector = &output->conn;
272 struct drm_encoder *encoder = &output->enc;
273 struct drm_crtc *crtc = &output->crtc;
274 struct drm_plane *primary, *cursor;
276 output->index = index;
278 output->info.enabled = cpu_to_le32(true);
279 output->info.r.width = cpu_to_le32(XRES_DEF);
280 output->info.r.height = cpu_to_le32(YRES_DEF);
283 primary = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_PRIMARY, index);
285 return PTR_ERR(primary);
286 cursor = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_CURSOR, index);
288 return PTR_ERR(cursor);
289 drm_crtc_init_with_planes(dev, crtc, primary, cursor,
290 &virtio_gpu_crtc_funcs, NULL);
291 drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
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);
297 drm_connector_attach_edid_property(connector);
299 drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs,
300 DRM_MODE_ENCODER_VIRTUAL, NULL);
301 drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
302 encoder->possible_crtcs = 1 << index;
304 drm_connector_attach_encoder(connector, encoder);
305 drm_connector_register(connector);
309 static struct drm_framebuffer *
310 virtio_gpu_user_framebuffer_create(struct drm_device *dev,
311 struct drm_file *file_priv,
312 const struct drm_mode_fb_cmd2 *mode_cmd)
314 struct drm_gem_object *obj = NULL;
315 struct virtio_gpu_framebuffer *virtio_gpu_fb;
318 if (mode_cmd->pixel_format != DRM_FORMAT_HOST_XRGB8888 &&
319 mode_cmd->pixel_format != DRM_FORMAT_HOST_ARGB8888)
320 return ERR_PTR(-ENOENT);
322 /* lookup object associated with res handle */
323 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
325 return ERR_PTR(-EINVAL);
327 virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
328 if (virtio_gpu_fb == NULL)
329 return ERR_PTR(-ENOMEM);
331 ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
333 kfree(virtio_gpu_fb);
334 drm_gem_object_put_unlocked(obj);
338 return &virtio_gpu_fb->base;
341 static void vgdev_atomic_commit_tail(struct drm_atomic_state *state)
343 struct drm_device *dev = state->dev;
345 drm_atomic_helper_commit_modeset_disables(dev, state);
346 drm_atomic_helper_commit_modeset_enables(dev, state);
347 drm_atomic_helper_commit_planes(dev, state, 0);
349 drm_atomic_helper_commit_hw_done(state);
351 drm_atomic_helper_wait_for_vblanks(dev, state);
352 drm_atomic_helper_cleanup_planes(dev, state);
355 static const struct drm_mode_config_helper_funcs virtio_mode_config_helpers = {
356 .atomic_commit_tail = vgdev_atomic_commit_tail,
359 static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
360 .fb_create = virtio_gpu_user_framebuffer_create,
361 .atomic_check = drm_atomic_helper_check,
362 .atomic_commit = drm_atomic_helper_commit,
365 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
369 drm_mode_config_init(vgdev->ddev);
370 vgdev->ddev->mode_config.quirk_addfb_prefer_host_byte_order = true;
371 vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
372 vgdev->ddev->mode_config.helper_private = &virtio_mode_config_helpers;
374 /* modes will be validated against the framebuffer size */
375 vgdev->ddev->mode_config.min_width = XRES_MIN;
376 vgdev->ddev->mode_config.min_height = YRES_MIN;
377 vgdev->ddev->mode_config.max_width = XRES_MAX;
378 vgdev->ddev->mode_config.max_height = YRES_MAX;
380 for (i = 0 ; i < vgdev->num_scanouts; ++i)
381 vgdev_output_init(vgdev, i);
383 drm_mode_config_reset(vgdev->ddev);
387 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
391 for (i = 0 ; i < vgdev->num_scanouts; ++i)
392 kfree(vgdev->outputs[i].edid);
393 virtio_gpu_fbdev_fini(vgdev);
394 drm_mode_config_cleanup(vgdev->ddev);