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 320 33 #define YRES_MIN 200 34 35 #define XRES_DEF 1024 36 #define YRES_DEF 768 37 38 #define XRES_MAX 8192 39 #define YRES_MAX 8192 40 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) 44 { 45 /* TODO */ 46 } 47 48 static void 49 virtio_gpu_hide_cursor(struct virtio_gpu_device *vgdev, 50 struct virtio_gpu_output *output) 51 { 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); 55 } 56 57 static int virtio_gpu_crtc_cursor_set(struct drm_crtc *crtc, 58 struct drm_file *file_priv, 59 uint32_t handle, 60 uint32_t width, 61 uint32_t height, 62 int32_t hot_x, int32_t hot_y) 63 { 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; 70 int ret = 0; 71 72 if (handle == 0) { 73 virtio_gpu_hide_cursor(vgdev, output); 74 return 0; 75 } 76 77 /* lookup the cursor */ 78 gobj = drm_gem_object_lookup(crtc->dev, file_priv, handle); 79 if (gobj == NULL) 80 return -ENOENT; 81 82 qobj = gem_to_virtio_gpu_obj(gobj); 83 84 if (!qobj->hw_res_handle) { 85 ret = -EINVAL; 86 goto out; 87 } 88 89 virtio_gpu_cmd_transfer_to_host_2d(vgdev, qobj->hw_res_handle, 0, 90 cpu_to_le32(64), 91 cpu_to_le32(64), 92 0, 0, &fence); 93 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); 99 ret = 0; 100 101 out: 102 drm_gem_object_unreference_unlocked(gobj); 103 return ret; 104 } 105 106 static int virtio_gpu_crtc_cursor_move(struct drm_crtc *crtc, 107 int x, int y) 108 { 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); 112 113 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); 117 return 0; 118 } 119 120 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, 126 127 #if 0 /* not (yet) working without vblank support according to docs */ 128 .page_flip = drm_atomic_helper_page_flip, 129 #endif 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, 133 }; 134 135 static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb) 136 { 137 struct virtio_gpu_framebuffer *virtio_gpu_fb 138 = to_virtio_gpu_framebuffer(fb); 139 140 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); 144 } 145 146 static int 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, 151 unsigned num_clips) 152 { 153 struct virtio_gpu_framebuffer *virtio_gpu_fb 154 = to_virtio_gpu_framebuffer(fb); 155 156 return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips); 157 } 158 159 static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = { 160 .destroy = virtio_gpu_user_framebuffer_destroy, 161 .dirty = virtio_gpu_framebuffer_surface_dirty, 162 }; 163 164 int 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) 169 { 170 int ret; 171 struct virtio_gpu_object *bo; 172 vgfb->obj = obj; 173 174 bo = gem_to_virtio_gpu_obj(obj); 175 176 ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs); 177 if (ret) { 178 vgfb->obj = NULL; 179 return ret; 180 } 181 drm_helper_mode_fill_fb_struct(&vgfb->base, mode_cmd); 182 183 spin_lock_init(&vgfb->dirty_lock); 184 vgfb->x1 = vgfb->y1 = INT_MAX; 185 vgfb->x2 = vgfb->y2 = 0; 186 return 0; 187 } 188 189 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) 192 { 193 return true; 194 } 195 196 static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc) 197 { 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); 201 202 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 203 crtc->mode.hdisplay, 204 crtc->mode.vdisplay, 0, 0); 205 } 206 207 static void virtio_gpu_crtc_enable(struct drm_crtc *crtc) 208 { 209 } 210 211 static void virtio_gpu_crtc_disable(struct drm_crtc *crtc) 212 { 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); 216 217 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0); 218 } 219 220 static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc, 221 struct drm_crtc_state *state) 222 { 223 return 0; 224 } 225 226 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, 232 }; 233 234 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) 237 { 238 return true; 239 } 240 241 static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder, 242 struct drm_display_mode *mode, 243 struct drm_display_mode *adjusted_mode) 244 { 245 } 246 247 static void virtio_gpu_enc_enable(struct drm_encoder *encoder) 248 { 249 } 250 251 static void virtio_gpu_enc_disable(struct drm_encoder *encoder) 252 { 253 } 254 255 static int virtio_gpu_conn_get_modes(struct drm_connector *connector) 256 { 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; 261 262 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); 265 266 if (width == 0 || height == 0) { 267 width = XRES_DEF; 268 height = YRES_DEF; 269 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); 270 } else { 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); 276 count++; 277 } 278 279 return count; 280 } 281 282 static int virtio_gpu_conn_mode_valid(struct drm_connector *connector, 283 struct drm_display_mode *mode) 284 { 285 struct virtio_gpu_output *output = 286 drm_connector_to_virtio_gpu_output(connector); 287 int width, height; 288 289 width = le32_to_cpu(output->info.r.width); 290 height = le32_to_cpu(output->info.r.height); 291 292 if (!(mode->type & DRM_MODE_TYPE_PREFERRED)) 293 return MODE_OK; 294 if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF) 295 return MODE_OK; 296 if (mode->hdisplay <= width && mode->hdisplay >= width - 16 && 297 mode->vdisplay <= height && mode->vdisplay >= height - 16) 298 return MODE_OK; 299 300 DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay); 301 return MODE_BAD; 302 } 303 304 static struct drm_encoder* 305 virtio_gpu_best_encoder(struct drm_connector *connector) 306 { 307 struct virtio_gpu_output *virtio_gpu_output = 308 drm_connector_to_virtio_gpu_output(connector); 309 310 return &virtio_gpu_output->enc; 311 } 312 313 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, 318 }; 319 320 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, 324 }; 325 326 static void virtio_gpu_conn_save(struct drm_connector *connector) 327 { 328 DRM_DEBUG("\n"); 329 } 330 331 static void virtio_gpu_conn_restore(struct drm_connector *connector) 332 { 333 DRM_DEBUG("\n"); 334 } 335 336 static enum drm_connector_status virtio_gpu_conn_detect( 337 struct drm_connector *connector, 338 bool force) 339 { 340 struct virtio_gpu_output *output = 341 drm_connector_to_virtio_gpu_output(connector); 342 343 if (output->info.enabled) 344 return connector_status_connected; 345 else 346 return connector_status_disconnected; 347 } 348 349 static void virtio_gpu_conn_destroy(struct drm_connector *connector) 350 { 351 struct virtio_gpu_output *virtio_gpu_output = 352 drm_connector_to_virtio_gpu_output(connector); 353 354 drm_connector_unregister(connector); 355 drm_connector_cleanup(connector); 356 kfree(virtio_gpu_output); 357 } 358 359 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, 369 }; 370 371 static const struct drm_encoder_funcs virtio_gpu_enc_funcs = { 372 .destroy = drm_encoder_cleanup, 373 }; 374 375 static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index) 376 { 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; 383 384 output->index = index; 385 if (index == 0) { 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); 389 } 390 391 plane = virtio_gpu_plane_init(vgdev, index); 392 if (IS_ERR(plane)) 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); 398 plane->crtc = crtc; 399 400 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); 403 404 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; 408 409 drm_mode_connector_attach_encoder(connector, encoder); 410 drm_connector_register(connector); 411 return 0; 412 } 413 414 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) 418 { 419 struct drm_gem_object *obj = NULL; 420 struct virtio_gpu_framebuffer *virtio_gpu_fb; 421 int ret; 422 423 /* lookup object associated with res handle */ 424 obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]); 425 if (!obj) 426 return ERR_PTR(-EINVAL); 427 428 virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL); 429 if (virtio_gpu_fb == NULL) 430 return ERR_PTR(-ENOMEM); 431 432 ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj); 433 if (ret) { 434 kfree(virtio_gpu_fb); 435 if (obj) 436 drm_gem_object_unreference_unlocked(obj); 437 return NULL; 438 } 439 440 return &virtio_gpu_fb->base; 441 } 442 443 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, 447 }; 448 449 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev) 450 { 451 int i; 452 453 drm_mode_config_init(vgdev->ddev); 454 vgdev->ddev->mode_config.funcs = (void *)&virtio_gpu_mode_funcs; 455 456 /* 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; 461 462 for (i = 0 ; i < vgdev->num_scanouts; ++i) 463 vgdev_output_init(vgdev, i); 464 465 drm_mode_config_reset(vgdev->ddev); 466 return 0; 467 } 468 469 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev) 470 { 471 virtio_gpu_fbdev_fini(vgdev); 472 drm_mode_config_cleanup(vgdev->ddev); 473 } 474