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 void virtio_gpu_crtc_gamma_set(struct drm_crtc *crtc,
42 u16 *red, u16 *green, u16 *blue,
43 uint32_t start, uint32_t size)
49 virtio_gpu_hide_cursor(struct virtio_gpu_device *vgdev,
50 struct virtio_gpu_output *output)
52 output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
53 output->cursor.resource_id = 0;
54 virtio_gpu_cursor_ping(vgdev, output);
57 static int virtio_gpu_crtc_cursor_set(struct drm_crtc *crtc,
58 struct drm_file *file_priv,
62 int32_t hot_x, int32_t hot_y)
64 struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
65 struct virtio_gpu_output *output =
66 container_of(crtc, struct virtio_gpu_output, crtc);
67 struct drm_gem_object *gobj = NULL;
68 struct virtio_gpu_object *qobj = NULL;
69 struct virtio_gpu_fence *fence = NULL;
73 virtio_gpu_hide_cursor(vgdev, output);
77 /* lookup the cursor */
78 gobj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
82 qobj = gem_to_virtio_gpu_obj(gobj);
84 if (!qobj->hw_res_handle) {
89 virtio_gpu_cmd_transfer_to_host_2d(vgdev, qobj->hw_res_handle, 0,
94 output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
95 output->cursor.resource_id = cpu_to_le32(qobj->hw_res_handle);
96 output->cursor.hot_x = cpu_to_le32(hot_x);
97 output->cursor.hot_y = cpu_to_le32(hot_y);
98 virtio_gpu_cursor_ping(vgdev, output);
102 drm_gem_object_unreference_unlocked(gobj);
106 static int virtio_gpu_crtc_cursor_move(struct drm_crtc *crtc,
109 struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
110 struct virtio_gpu_output *output =
111 container_of(crtc, struct virtio_gpu_output, crtc);
113 output->cursor.hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_MOVE_CURSOR);
114 output->cursor.pos.x = cpu_to_le32(x);
115 output->cursor.pos.y = cpu_to_le32(y);
116 virtio_gpu_cursor_ping(vgdev, output);
120 static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
121 .cursor_set2 = virtio_gpu_crtc_cursor_set,
122 .cursor_move = virtio_gpu_crtc_cursor_move,
123 .gamma_set = virtio_gpu_crtc_gamma_set,
124 .set_config = drm_atomic_helper_set_config,
125 .destroy = drm_crtc_cleanup,
127 #if 0 /* not (yet) working without vblank support according to docs */
128 .page_flip = drm_atomic_helper_page_flip,
130 .reset = drm_atomic_helper_crtc_reset,
131 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
132 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
135 static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
137 struct virtio_gpu_framebuffer *virtio_gpu_fb
138 = to_virtio_gpu_framebuffer(fb);
140 if (virtio_gpu_fb->obj)
141 drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj);
142 drm_framebuffer_cleanup(fb);
143 kfree(virtio_gpu_fb);
147 virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb,
148 struct drm_file *file_priv,
149 unsigned flags, unsigned color,
150 struct drm_clip_rect *clips,
153 struct virtio_gpu_framebuffer *virtio_gpu_fb
154 = to_virtio_gpu_framebuffer(fb);
156 return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips);
159 static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = {
160 .destroy = virtio_gpu_user_framebuffer_destroy,
161 .dirty = virtio_gpu_framebuffer_surface_dirty,
165 virtio_gpu_framebuffer_init(struct drm_device *dev,
166 struct virtio_gpu_framebuffer *vgfb,
167 struct drm_mode_fb_cmd2 *mode_cmd,
168 struct drm_gem_object *obj)
171 struct virtio_gpu_object *bo;
174 bo = gem_to_virtio_gpu_obj(obj);
176 ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs);
181 drm_helper_mode_fill_fb_struct(&vgfb->base, mode_cmd);
183 spin_lock_init(&vgfb->dirty_lock);
184 vgfb->x1 = vgfb->y1 = INT_MAX;
185 vgfb->x2 = vgfb->y2 = 0;
189 static bool virtio_gpu_crtc_mode_fixup(struct drm_crtc *crtc,
190 const struct drm_display_mode *mode,
191 struct drm_display_mode *adjusted_mode)
196 static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
198 struct drm_device *dev = crtc->dev;
199 struct virtio_gpu_device *vgdev = dev->dev_private;
200 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
202 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
204 crtc->mode.vdisplay, 0, 0);
207 static void virtio_gpu_crtc_enable(struct drm_crtc *crtc)
211 static void virtio_gpu_crtc_disable(struct drm_crtc *crtc)
213 struct drm_device *dev = crtc->dev;
214 struct virtio_gpu_device *vgdev = dev->dev_private;
215 struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc);
217 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0);
220 static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc,
221 struct drm_crtc_state *state)
226 static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
227 .enable = virtio_gpu_crtc_enable,
228 .disable = virtio_gpu_crtc_disable,
229 .mode_fixup = virtio_gpu_crtc_mode_fixup,
230 .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
231 .atomic_check = virtio_gpu_crtc_atomic_check,
234 static bool virtio_gpu_enc_mode_fixup(struct drm_encoder *encoder,
235 const struct drm_display_mode *mode,
236 struct drm_display_mode *adjusted_mode)
241 static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
242 struct drm_display_mode *mode,
243 struct drm_display_mode *adjusted_mode)
247 static void virtio_gpu_enc_enable(struct drm_encoder *encoder)
251 static void virtio_gpu_enc_disable(struct drm_encoder *encoder)
255 static int virtio_gpu_conn_get_modes(struct drm_connector *connector)
257 struct virtio_gpu_output *output =
258 drm_connector_to_virtio_gpu_output(connector);
259 struct drm_display_mode *mode = NULL;
260 int count, width, height;
262 width = le32_to_cpu(output->info.r.width);
263 height = le32_to_cpu(output->info.r.height);
264 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
266 if (width == 0 || height == 0) {
269 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
271 DRM_DEBUG("add mode: %dx%d\n", width, height);
272 mode = drm_cvt_mode(connector->dev, width, height, 60,
273 false, false, false);
274 mode->type |= DRM_MODE_TYPE_PREFERRED;
275 drm_mode_probed_add(connector, mode);
282 static int virtio_gpu_conn_mode_valid(struct drm_connector *connector,
283 struct drm_display_mode *mode)
285 struct virtio_gpu_output *output =
286 drm_connector_to_virtio_gpu_output(connector);
289 width = le32_to_cpu(output->info.r.width);
290 height = le32_to_cpu(output->info.r.height);
292 if (!(mode->type & DRM_MODE_TYPE_PREFERRED))
294 if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF)
296 if (mode->hdisplay <= width && mode->hdisplay >= width - 16 &&
297 mode->vdisplay <= height && mode->vdisplay >= height - 16)
300 DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay);
304 static struct drm_encoder*
305 virtio_gpu_best_encoder(struct drm_connector *connector)
307 struct virtio_gpu_output *virtio_gpu_output =
308 drm_connector_to_virtio_gpu_output(connector);
310 return &virtio_gpu_output->enc;
313 static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = {
314 .mode_fixup = virtio_gpu_enc_mode_fixup,
315 .mode_set = virtio_gpu_enc_mode_set,
316 .enable = virtio_gpu_enc_enable,
317 .disable = virtio_gpu_enc_disable,
320 static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = {
321 .get_modes = virtio_gpu_conn_get_modes,
322 .mode_valid = virtio_gpu_conn_mode_valid,
323 .best_encoder = virtio_gpu_best_encoder,
326 static void virtio_gpu_conn_save(struct drm_connector *connector)
331 static void virtio_gpu_conn_restore(struct drm_connector *connector)
336 static enum drm_connector_status virtio_gpu_conn_detect(
337 struct drm_connector *connector,
340 struct virtio_gpu_output *output =
341 drm_connector_to_virtio_gpu_output(connector);
343 if (output->info.enabled)
344 return connector_status_connected;
346 return connector_status_disconnected;
349 static void virtio_gpu_conn_destroy(struct drm_connector *connector)
351 struct virtio_gpu_output *virtio_gpu_output =
352 drm_connector_to_virtio_gpu_output(connector);
354 drm_connector_unregister(connector);
355 drm_connector_cleanup(connector);
356 kfree(virtio_gpu_output);
359 static const struct drm_connector_funcs virtio_gpu_connector_funcs = {
360 .dpms = drm_atomic_helper_connector_dpms,
361 .save = virtio_gpu_conn_save,
362 .restore = virtio_gpu_conn_restore,
363 .detect = virtio_gpu_conn_detect,
364 .fill_modes = drm_helper_probe_single_connector_modes,
365 .destroy = virtio_gpu_conn_destroy,
366 .reset = drm_atomic_helper_connector_reset,
367 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
368 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
371 static const struct drm_encoder_funcs virtio_gpu_enc_funcs = {
372 .destroy = drm_encoder_cleanup,
375 static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index)
377 struct drm_device *dev = vgdev->ddev;
378 struct virtio_gpu_output *output = vgdev->outputs + index;
379 struct drm_connector *connector = &output->conn;
380 struct drm_encoder *encoder = &output->enc;
381 struct drm_crtc *crtc = &output->crtc;
382 struct drm_plane *plane;
384 output->index = index;
386 output->info.enabled = cpu_to_le32(true);
387 output->info.r.width = cpu_to_le32(XRES_DEF);
388 output->info.r.height = cpu_to_le32(YRES_DEF);
391 plane = virtio_gpu_plane_init(vgdev, index);
393 return PTR_ERR(plane);
394 drm_crtc_init_with_planes(dev, crtc, plane, NULL,
395 &virtio_gpu_crtc_funcs);
396 drm_mode_crtc_set_gamma_size(crtc, 256);
397 drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs);
400 drm_connector_init(dev, connector, &virtio_gpu_connector_funcs,
401 DRM_MODE_CONNECTOR_VIRTUAL);
402 drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs);
404 drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs,
405 DRM_MODE_ENCODER_VIRTUAL);
406 drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs);
407 encoder->possible_crtcs = 1 << index;
409 drm_mode_connector_attach_encoder(connector, encoder);
410 drm_connector_register(connector);
414 static struct drm_framebuffer *
415 virtio_gpu_user_framebuffer_create(struct drm_device *dev,
416 struct drm_file *file_priv,
417 struct drm_mode_fb_cmd2 *mode_cmd)
419 struct drm_gem_object *obj = NULL;
420 struct virtio_gpu_framebuffer *virtio_gpu_fb;
423 /* lookup object associated with res handle */
424 obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
426 return ERR_PTR(-EINVAL);
428 virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL);
429 if (virtio_gpu_fb == NULL)
430 return ERR_PTR(-ENOMEM);
432 ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj);
434 kfree(virtio_gpu_fb);
436 drm_gem_object_unreference_unlocked(obj);
440 return &virtio_gpu_fb->base;
443 static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
444 .fb_create = virtio_gpu_user_framebuffer_create,
445 .atomic_check = drm_atomic_helper_check,
446 .atomic_commit = drm_atomic_helper_commit,
449 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
453 drm_mode_config_init(vgdev->ddev);
454 vgdev->ddev->mode_config.funcs = (void *)&virtio_gpu_mode_funcs;
456 /* modes will be validated against the framebuffer size */
457 vgdev->ddev->mode_config.min_width = XRES_MIN;
458 vgdev->ddev->mode_config.min_height = YRES_MIN;
459 vgdev->ddev->mode_config.max_width = XRES_MAX;
460 vgdev->ddev->mode_config.max_height = YRES_MAX;
462 for (i = 0 ; i < vgdev->num_scanouts; ++i)
463 vgdev_output_init(vgdev, i);
465 drm_mode_config_reset(vgdev->ddev);
469 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
471 virtio_gpu_fbdev_fini(vgdev);
472 drm_mode_config_cleanup(vgdev->ddev);