1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright (C) 2013-2017 Oracle Corporation 4 * This file is based on ast_mode.c 5 * Copyright 2012 Red Hat Inc. 6 * Parts based on xf86-video-ast 7 * Copyright (c) 2005 ASPEED Technology Inc. 8 * Authors: Dave Airlie <airlied@redhat.com> 9 * Michael Thayer <michael.thayer@oracle.com, 10 * Hans de Goede <hdegoede@redhat.com> 11 */ 12 #include <linux/export.h> 13 14 #include <drm/drm_atomic.h> 15 #include <drm/drm_atomic_helper.h> 16 #include <drm/drm_fourcc.h> 17 #include <drm/drm_plane_helper.h> 18 #include <drm/drm_probe_helper.h> 19 #include <drm/drm_vblank.h> 20 21 #include "hgsmi_channels.h" 22 #include "vbox_drv.h" 23 #include "vboxvideo.h" 24 25 /* 26 * Set a graphics mode. Poke any required values into registers, do an HGSMI 27 * mode set and tell the host we support advanced graphics functions. 28 */ 29 static void vbox_do_modeset(struct drm_crtc *crtc) 30 { 31 struct drm_framebuffer *fb = crtc->primary->state->fb; 32 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 33 struct vbox_private *vbox; 34 int width, height, bpp, pitch; 35 u16 flags; 36 s32 x_offset, y_offset; 37 38 vbox = crtc->dev->dev_private; 39 width = vbox_crtc->width ? vbox_crtc->width : 640; 40 height = vbox_crtc->height ? vbox_crtc->height : 480; 41 bpp = fb ? fb->format->cpp[0] * 8 : 32; 42 pitch = fb ? fb->pitches[0] : width * bpp / 8; 43 x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint; 44 y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint; 45 46 /* 47 * This is the old way of setting graphics modes. It assumed one screen 48 * and a frame-buffer at the start of video RAM. On older versions of 49 * VirtualBox, certain parts of the code still assume that the first 50 * screen is programmed this way, so try to fake it. 51 */ 52 if (vbox_crtc->crtc_id == 0 && fb && 53 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y && 54 vbox_crtc->fb_offset % (bpp / 8) == 0) { 55 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width); 56 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height); 57 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp); 58 vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp); 59 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED); 60 vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET, 61 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x); 62 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET, 63 vbox_crtc->fb_offset / pitch + vbox_crtc->y); 64 } 65 66 flags = VBVA_SCREEN_F_ACTIVE; 67 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK; 68 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0; 69 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id, 70 x_offset, y_offset, 71 vbox_crtc->x * bpp / 8 + 72 vbox_crtc->y * pitch, 73 pitch, width, height, bpp, flags); 74 } 75 76 static int vbox_set_view(struct drm_crtc *crtc) 77 { 78 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 79 struct vbox_private *vbox = crtc->dev->dev_private; 80 struct vbva_infoview *p; 81 82 /* 83 * Tell the host about the view. This design originally targeted the 84 * Windows XP driver architecture and assumed that each screen would 85 * have a dedicated frame buffer with the command buffer following it, 86 * the whole being a "view". The host works out which screen a command 87 * buffer belongs to by checking whether it is in the first view, then 88 * whether it is in the second and so on. The first match wins. We 89 * cheat around this by making the first view be the managed memory 90 * plus the first command buffer, the second the same plus the second 91 * buffer and so on. 92 */ 93 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p), 94 HGSMI_CH_VBVA, VBVA_INFO_VIEW); 95 if (!p) 96 return -ENOMEM; 97 98 p->view_index = vbox_crtc->crtc_id; 99 p->view_offset = vbox_crtc->fb_offset; 100 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset + 101 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE; 102 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset; 103 104 hgsmi_buffer_submit(vbox->guest_pool, p); 105 hgsmi_buffer_free(vbox->guest_pool, p); 106 107 return 0; 108 } 109 110 /* 111 * Try to map the layout of virtual screens to the range of the input device. 112 * Return true if we need to re-set the crtc modes due to screen offset 113 * changes. 114 */ 115 static bool vbox_set_up_input_mapping(struct vbox_private *vbox) 116 { 117 struct drm_crtc *crtci; 118 struct drm_connector *connectori; 119 struct drm_framebuffer *fb, *fb1 = NULL; 120 bool single_framebuffer = true; 121 bool old_single_framebuffer = vbox->single_framebuffer; 122 u16 width = 0, height = 0; 123 124 /* 125 * Are we using an X.Org-style single large frame-buffer for all crtcs? 126 * If so then screen layout can be deduced from the crtc offsets. 127 * Same fall-back if this is the fbdev frame-buffer. 128 */ 129 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 130 fb = crtci->primary->state->fb; 131 if (!fb) 132 continue; 133 134 if (!fb1) { 135 fb1 = fb; 136 if (to_vbox_framebuffer(fb1) == &vbox->afb) 137 break; 138 } else if (fb != fb1) { 139 single_framebuffer = false; 140 } 141 } 142 if (!fb1) 143 return false; 144 145 if (single_framebuffer) { 146 vbox->single_framebuffer = true; 147 vbox->input_mapping_width = fb1->width; 148 vbox->input_mapping_height = fb1->height; 149 return old_single_framebuffer != vbox->single_framebuffer; 150 } 151 /* Otherwise calculate the total span of all screens. */ 152 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list, 153 head) { 154 struct vbox_connector *vbox_connector = 155 to_vbox_connector(connectori); 156 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc; 157 158 width = max_t(u16, width, vbox_crtc->x_hint + 159 vbox_connector->mode_hint.width); 160 height = max_t(u16, height, vbox_crtc->y_hint + 161 vbox_connector->mode_hint.height); 162 } 163 164 vbox->single_framebuffer = false; 165 vbox->input_mapping_width = width; 166 vbox->input_mapping_height = height; 167 168 return old_single_framebuffer != vbox->single_framebuffer; 169 } 170 171 static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc, 172 struct drm_framebuffer *fb, 173 int x, int y) 174 { 175 struct drm_gem_vram_object *gbo = 176 drm_gem_vram_of_gem(to_vbox_framebuffer(fb)->obj); 177 struct vbox_private *vbox = crtc->dev->dev_private; 178 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 179 bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state); 180 181 mutex_lock(&vbox->hw_mutex); 182 183 if (crtc->state->enable) { 184 vbox_crtc->width = crtc->state->mode.hdisplay; 185 vbox_crtc->height = crtc->state->mode.vdisplay; 186 } 187 188 vbox_crtc->x = x; 189 vbox_crtc->y = y; 190 vbox_crtc->fb_offset = drm_gem_vram_offset(gbo); 191 192 /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */ 193 if (needs_modeset && vbox_set_up_input_mapping(vbox)) { 194 struct drm_crtc *crtci; 195 196 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, 197 head) { 198 if (crtci == crtc) 199 continue; 200 vbox_do_modeset(crtci); 201 } 202 } 203 204 vbox_set_view(crtc); 205 vbox_do_modeset(crtc); 206 207 if (needs_modeset) 208 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0, 209 vbox->input_mapping_width, 210 vbox->input_mapping_height); 211 212 mutex_unlock(&vbox->hw_mutex); 213 } 214 215 static void vbox_crtc_atomic_enable(struct drm_crtc *crtc, 216 struct drm_crtc_state *old_crtc_state) 217 { 218 } 219 220 static void vbox_crtc_atomic_disable(struct drm_crtc *crtc, 221 struct drm_crtc_state *old_crtc_state) 222 { 223 } 224 225 static void vbox_crtc_atomic_flush(struct drm_crtc *crtc, 226 struct drm_crtc_state *old_crtc_state) 227 { 228 struct drm_pending_vblank_event *event; 229 unsigned long flags; 230 231 if (crtc->state && crtc->state->event) { 232 event = crtc->state->event; 233 crtc->state->event = NULL; 234 235 spin_lock_irqsave(&crtc->dev->event_lock, flags); 236 drm_crtc_send_vblank_event(crtc, event); 237 spin_unlock_irqrestore(&crtc->dev->event_lock, flags); 238 } 239 } 240 241 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = { 242 .atomic_enable = vbox_crtc_atomic_enable, 243 .atomic_disable = vbox_crtc_atomic_disable, 244 .atomic_flush = vbox_crtc_atomic_flush, 245 }; 246 247 static void vbox_crtc_destroy(struct drm_crtc *crtc) 248 { 249 drm_crtc_cleanup(crtc); 250 kfree(crtc); 251 } 252 253 static const struct drm_crtc_funcs vbox_crtc_funcs = { 254 .set_config = drm_atomic_helper_set_config, 255 .page_flip = drm_atomic_helper_page_flip, 256 /* .gamma_set = vbox_crtc_gamma_set, */ 257 .destroy = vbox_crtc_destroy, 258 .reset = drm_atomic_helper_crtc_reset, 259 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, 260 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, 261 }; 262 263 static int vbox_primary_atomic_check(struct drm_plane *plane, 264 struct drm_plane_state *new_state) 265 { 266 struct drm_crtc_state *crtc_state = NULL; 267 268 if (new_state->crtc) { 269 crtc_state = drm_atomic_get_existing_crtc_state( 270 new_state->state, new_state->crtc); 271 if (WARN_ON(!crtc_state)) 272 return -EINVAL; 273 } 274 275 return drm_atomic_helper_check_plane_state(new_state, crtc_state, 276 DRM_PLANE_HELPER_NO_SCALING, 277 DRM_PLANE_HELPER_NO_SCALING, 278 false, true); 279 } 280 281 static void vbox_primary_atomic_update(struct drm_plane *plane, 282 struct drm_plane_state *old_state) 283 { 284 struct drm_crtc *crtc = plane->state->crtc; 285 struct drm_framebuffer *fb = plane->state->fb; 286 287 vbox_crtc_set_base_and_mode(crtc, fb, 288 plane->state->src_x >> 16, 289 plane->state->src_y >> 16); 290 } 291 292 static void vbox_primary_atomic_disable(struct drm_plane *plane, 293 struct drm_plane_state *old_state) 294 { 295 struct drm_crtc *crtc = old_state->crtc; 296 297 /* vbox_do_modeset checks plane->state->fb and will disable if NULL */ 298 vbox_crtc_set_base_and_mode(crtc, old_state->fb, 299 old_state->src_x >> 16, 300 old_state->src_y >> 16); 301 } 302 303 static int vbox_primary_prepare_fb(struct drm_plane *plane, 304 struct drm_plane_state *new_state) 305 { 306 struct drm_gem_vram_object *gbo; 307 int ret; 308 309 if (!new_state->fb) 310 return 0; 311 312 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(new_state->fb)->obj); 313 ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM); 314 if (ret) 315 DRM_WARN("Error %d pinning new fb, out of video mem?\n", ret); 316 317 return ret; 318 } 319 320 static void vbox_primary_cleanup_fb(struct drm_plane *plane, 321 struct drm_plane_state *old_state) 322 { 323 struct drm_gem_vram_object *gbo; 324 325 if (!old_state->fb) 326 return; 327 328 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(old_state->fb)->obj); 329 drm_gem_vram_unpin(gbo); 330 } 331 332 static int vbox_cursor_atomic_check(struct drm_plane *plane, 333 struct drm_plane_state *new_state) 334 { 335 struct drm_crtc_state *crtc_state = NULL; 336 u32 width = new_state->crtc_w; 337 u32 height = new_state->crtc_h; 338 int ret; 339 340 if (new_state->crtc) { 341 crtc_state = drm_atomic_get_existing_crtc_state( 342 new_state->state, new_state->crtc); 343 if (WARN_ON(!crtc_state)) 344 return -EINVAL; 345 } 346 347 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state, 348 DRM_PLANE_HELPER_NO_SCALING, 349 DRM_PLANE_HELPER_NO_SCALING, 350 true, true); 351 if (ret) 352 return ret; 353 354 if (!new_state->fb) 355 return 0; 356 357 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT || 358 width == 0 || height == 0) 359 return -EINVAL; 360 361 return 0; 362 } 363 364 /* 365 * Copy the ARGB image and generate the mask, which is needed in case the host 366 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set 367 * if the corresponding alpha value in the ARGB image is greater than 0xF0. 368 */ 369 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height, 370 size_t mask_size) 371 { 372 size_t line_size = (width + 7) / 8; 373 u32 i, j; 374 375 memcpy(dst + mask_size, src, width * height * 4); 376 for (i = 0; i < height; ++i) 377 for (j = 0; j < width; ++j) 378 if (((u32 *)src)[i * width + j] > 0xf0000000) 379 dst[i * line_size + j / 8] |= (0x80 >> (j % 8)); 380 } 381 382 static void vbox_cursor_atomic_update(struct drm_plane *plane, 383 struct drm_plane_state *old_state) 384 { 385 struct vbox_private *vbox = 386 container_of(plane->dev, struct vbox_private, ddev); 387 struct vbox_crtc *vbox_crtc = to_vbox_crtc(plane->state->crtc); 388 struct drm_framebuffer *fb = plane->state->fb; 389 struct drm_gem_vram_object *gbo = 390 drm_gem_vram_of_gem(to_vbox_framebuffer(fb)->obj); 391 u32 width = plane->state->crtc_w; 392 u32 height = plane->state->crtc_h; 393 size_t data_size, mask_size; 394 u32 flags; 395 u8 *src; 396 397 /* 398 * VirtualBox uses the host windowing system to draw the cursor so 399 * moves are a no-op, we only need to upload new cursor sprites. 400 */ 401 if (fb == old_state->fb) 402 return; 403 404 mutex_lock(&vbox->hw_mutex); 405 406 vbox_crtc->cursor_enabled = true; 407 408 /* pinning is done in prepare/cleanup framebuffer */ 409 src = drm_gem_vram_kmap(gbo, true, NULL); 410 if (IS_ERR(src)) { 411 mutex_unlock(&vbox->hw_mutex); 412 DRM_WARN("Could not kmap cursor bo, skipping update\n"); 413 return; 414 } 415 416 /* 417 * The mask must be calculated based on the alpha 418 * channel, one bit per ARGB word, and must be 32-bit 419 * padded. 420 */ 421 mask_size = ((width + 7) / 8 * height + 3) & ~3; 422 data_size = width * height * 4 + mask_size; 423 424 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size); 425 drm_gem_vram_kunmap(gbo); 426 427 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE | 428 VBOX_MOUSE_POINTER_ALPHA; 429 hgsmi_update_pointer_shape(vbox->guest_pool, flags, 430 min_t(u32, max(fb->hot_x, 0), width), 431 min_t(u32, max(fb->hot_y, 0), height), 432 width, height, vbox->cursor_data, data_size); 433 434 mutex_unlock(&vbox->hw_mutex); 435 } 436 437 static void vbox_cursor_atomic_disable(struct drm_plane *plane, 438 struct drm_plane_state *old_state) 439 { 440 struct vbox_private *vbox = 441 container_of(plane->dev, struct vbox_private, ddev); 442 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc); 443 bool cursor_enabled = false; 444 struct drm_crtc *crtci; 445 446 mutex_lock(&vbox->hw_mutex); 447 448 vbox_crtc->cursor_enabled = false; 449 450 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 451 if (to_vbox_crtc(crtci)->cursor_enabled) 452 cursor_enabled = true; 453 } 454 455 if (!cursor_enabled) 456 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0, 457 0, 0, NULL, 0); 458 459 mutex_unlock(&vbox->hw_mutex); 460 } 461 462 static int vbox_cursor_prepare_fb(struct drm_plane *plane, 463 struct drm_plane_state *new_state) 464 { 465 struct drm_gem_vram_object *gbo; 466 467 if (!new_state->fb) 468 return 0; 469 470 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(new_state->fb)->obj); 471 return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_SYSTEM); 472 } 473 474 static void vbox_cursor_cleanup_fb(struct drm_plane *plane, 475 struct drm_plane_state *old_state) 476 { 477 struct drm_gem_vram_object *gbo; 478 479 if (!plane->state->fb) 480 return; 481 482 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(plane->state->fb)->obj); 483 drm_gem_vram_unpin(gbo); 484 } 485 486 static const u32 vbox_cursor_plane_formats[] = { 487 DRM_FORMAT_ARGB8888, 488 }; 489 490 static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = { 491 .atomic_check = vbox_cursor_atomic_check, 492 .atomic_update = vbox_cursor_atomic_update, 493 .atomic_disable = vbox_cursor_atomic_disable, 494 .prepare_fb = vbox_cursor_prepare_fb, 495 .cleanup_fb = vbox_cursor_cleanup_fb, 496 }; 497 498 static const struct drm_plane_funcs vbox_cursor_plane_funcs = { 499 .update_plane = drm_atomic_helper_update_plane, 500 .disable_plane = drm_atomic_helper_disable_plane, 501 .destroy = drm_primary_helper_destroy, 502 .reset = drm_atomic_helper_plane_reset, 503 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 504 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 505 }; 506 507 static const u32 vbox_primary_plane_formats[] = { 508 DRM_FORMAT_XRGB8888, 509 DRM_FORMAT_ARGB8888, 510 }; 511 512 static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = { 513 .atomic_check = vbox_primary_atomic_check, 514 .atomic_update = vbox_primary_atomic_update, 515 .atomic_disable = vbox_primary_atomic_disable, 516 .prepare_fb = vbox_primary_prepare_fb, 517 .cleanup_fb = vbox_primary_cleanup_fb, 518 }; 519 520 static const struct drm_plane_funcs vbox_primary_plane_funcs = { 521 .update_plane = drm_atomic_helper_update_plane, 522 .disable_plane = drm_atomic_helper_disable_plane, 523 .destroy = drm_primary_helper_destroy, 524 .reset = drm_atomic_helper_plane_reset, 525 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 526 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 527 }; 528 529 static struct drm_plane *vbox_create_plane(struct vbox_private *vbox, 530 unsigned int possible_crtcs, 531 enum drm_plane_type type) 532 { 533 const struct drm_plane_helper_funcs *helper_funcs = NULL; 534 const struct drm_plane_funcs *funcs; 535 struct drm_plane *plane; 536 const u32 *formats; 537 int num_formats; 538 int err; 539 540 if (type == DRM_PLANE_TYPE_PRIMARY) { 541 funcs = &vbox_primary_plane_funcs; 542 formats = vbox_primary_plane_formats; 543 helper_funcs = &vbox_primary_helper_funcs; 544 num_formats = ARRAY_SIZE(vbox_primary_plane_formats); 545 } else if (type == DRM_PLANE_TYPE_CURSOR) { 546 funcs = &vbox_cursor_plane_funcs; 547 formats = vbox_cursor_plane_formats; 548 helper_funcs = &vbox_cursor_helper_funcs; 549 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats); 550 } else { 551 return ERR_PTR(-EINVAL); 552 } 553 554 plane = kzalloc(sizeof(*plane), GFP_KERNEL); 555 if (!plane) 556 return ERR_PTR(-ENOMEM); 557 558 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs, 559 funcs, formats, num_formats, 560 NULL, type, NULL); 561 if (err) 562 goto free_plane; 563 564 drm_plane_helper_add(plane, helper_funcs); 565 566 return plane; 567 568 free_plane: 569 kfree(plane); 570 return ERR_PTR(-EINVAL); 571 } 572 573 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i) 574 { 575 struct vbox_private *vbox = 576 container_of(dev, struct vbox_private, ddev); 577 struct drm_plane *cursor = NULL; 578 struct vbox_crtc *vbox_crtc; 579 struct drm_plane *primary; 580 u32 caps = 0; 581 int ret; 582 583 ret = hgsmi_query_conf(vbox->guest_pool, 584 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps); 585 if (ret) 586 return ERR_PTR(ret); 587 588 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL); 589 if (!vbox_crtc) 590 return ERR_PTR(-ENOMEM); 591 592 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY); 593 if (IS_ERR(primary)) { 594 ret = PTR_ERR(primary); 595 goto free_mem; 596 } 597 598 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) { 599 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR); 600 if (IS_ERR(cursor)) { 601 ret = PTR_ERR(cursor); 602 goto clean_primary; 603 } 604 } else { 605 DRM_WARN("VirtualBox host is too old, no cursor support\n"); 606 } 607 608 vbox_crtc->crtc_id = i; 609 610 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor, 611 &vbox_crtc_funcs, NULL); 612 if (ret) 613 goto clean_cursor; 614 615 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256); 616 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs); 617 618 return vbox_crtc; 619 620 clean_cursor: 621 if (cursor) { 622 drm_plane_cleanup(cursor); 623 kfree(cursor); 624 } 625 clean_primary: 626 drm_plane_cleanup(primary); 627 kfree(primary); 628 free_mem: 629 kfree(vbox_crtc); 630 return ERR_PTR(ret); 631 } 632 633 static void vbox_encoder_destroy(struct drm_encoder *encoder) 634 { 635 drm_encoder_cleanup(encoder); 636 kfree(encoder); 637 } 638 639 static const struct drm_encoder_funcs vbox_enc_funcs = { 640 .destroy = vbox_encoder_destroy, 641 }; 642 643 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev, 644 unsigned int i) 645 { 646 struct vbox_encoder *vbox_encoder; 647 648 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL); 649 if (!vbox_encoder) 650 return NULL; 651 652 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs, 653 DRM_MODE_ENCODER_DAC, NULL); 654 655 vbox_encoder->base.possible_crtcs = 1 << i; 656 return &vbox_encoder->base; 657 } 658 659 /* 660 * Generate EDID data with a mode-unique serial number for the virtual 661 * monitor to try to persuade Unity that different modes correspond to 662 * different monitors and it should not try to force the same resolution on 663 * them. 664 */ 665 static void vbox_set_edid(struct drm_connector *connector, int width, 666 int height) 667 { 668 enum { EDID_SIZE = 128 }; 669 unsigned char edid[EDID_SIZE] = { 670 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */ 671 0x58, 0x58, /* manufacturer (VBX) */ 672 0x00, 0x00, /* product code */ 673 0x00, 0x00, 0x00, 0x00, /* serial number goes here */ 674 0x01, /* week of manufacture */ 675 0x00, /* year of manufacture */ 676 0x01, 0x03, /* EDID version */ 677 0x80, /* capabilities - digital */ 678 0x00, /* horiz. res in cm, zero for projectors */ 679 0x00, /* vert. res in cm */ 680 0x78, /* display gamma (120 == 2.2). */ 681 0xEE, /* features (standby, suspend, off, RGB, std */ 682 /* colour space, preferred timing mode) */ 683 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54, 684 /* chromaticity for standard colour space. */ 685 0x00, 0x00, 0x00, /* no default timings */ 686 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 687 0x01, 0x01, 688 0x01, 0x01, 0x01, 0x01, /* no standard timings */ 689 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 690 0x02, 0x02, 691 /* descriptor block 1 goes below */ 692 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 693 /* descriptor block 2, monitor ranges */ 694 0x00, 0x00, 0x00, 0xFD, 0x00, 695 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 696 0x20, 0x20, 697 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */ 698 0x20, 699 /* descriptor block 3, monitor name */ 700 0x00, 0x00, 0x00, 0xFC, 0x00, 701 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', 702 '\n', 703 /* descriptor block 4: dummy data */ 704 0x00, 0x00, 0x00, 0x10, 0x00, 705 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 706 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 707 0x20, 708 0x00, /* number of extensions */ 709 0x00 /* checksum goes here */ 710 }; 711 int clock = (width + 6) * (height + 6) * 60 / 10000; 712 unsigned int i, sum = 0; 713 714 edid[12] = width & 0xff; 715 edid[13] = width >> 8; 716 edid[14] = height & 0xff; 717 edid[15] = height >> 8; 718 edid[54] = clock & 0xff; 719 edid[55] = clock >> 8; 720 edid[56] = width & 0xff; 721 edid[58] = (width >> 4) & 0xf0; 722 edid[59] = height & 0xff; 723 edid[61] = (height >> 4) & 0xf0; 724 for (i = 0; i < EDID_SIZE - 1; ++i) 725 sum += edid[i]; 726 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF; 727 drm_connector_update_edid_property(connector, (struct edid *)edid); 728 } 729 730 static int vbox_get_modes(struct drm_connector *connector) 731 { 732 struct vbox_connector *vbox_connector = NULL; 733 struct drm_display_mode *mode = NULL; 734 struct vbox_private *vbox = NULL; 735 unsigned int num_modes = 0; 736 int preferred_width, preferred_height; 737 738 vbox_connector = to_vbox_connector(connector); 739 vbox = connector->dev->dev_private; 740 741 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) + 742 HOST_FLAGS_OFFSET); 743 if (vbox_connector->vbox_crtc->crtc_id == 0) 744 vbox_report_caps(vbox); 745 746 num_modes = drm_add_modes_noedid(connector, 2560, 1600); 747 preferred_width = vbox_connector->mode_hint.width ? 748 vbox_connector->mode_hint.width : 1024; 749 preferred_height = vbox_connector->mode_hint.height ? 750 vbox_connector->mode_hint.height : 768; 751 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 752 60, false, false, false); 753 if (mode) { 754 mode->type |= DRM_MODE_TYPE_PREFERRED; 755 drm_mode_probed_add(connector, mode); 756 ++num_modes; 757 } 758 vbox_set_edid(connector, preferred_width, preferred_height); 759 760 if (vbox_connector->vbox_crtc->x_hint != -1) 761 drm_object_property_set_value(&connector->base, 762 vbox->ddev.mode_config.suggested_x_property, 763 vbox_connector->vbox_crtc->x_hint); 764 else 765 drm_object_property_set_value(&connector->base, 766 vbox->ddev.mode_config.suggested_x_property, 0); 767 768 if (vbox_connector->vbox_crtc->y_hint != -1) 769 drm_object_property_set_value(&connector->base, 770 vbox->ddev.mode_config.suggested_y_property, 771 vbox_connector->vbox_crtc->y_hint); 772 else 773 drm_object_property_set_value(&connector->base, 774 vbox->ddev.mode_config.suggested_y_property, 0); 775 776 return num_modes; 777 } 778 779 static void vbox_connector_destroy(struct drm_connector *connector) 780 { 781 drm_connector_unregister(connector); 782 drm_connector_cleanup(connector); 783 kfree(connector); 784 } 785 786 static enum drm_connector_status 787 vbox_connector_detect(struct drm_connector *connector, bool force) 788 { 789 struct vbox_connector *vbox_connector; 790 791 vbox_connector = to_vbox_connector(connector); 792 793 return vbox_connector->mode_hint.disconnected ? 794 connector_status_disconnected : connector_status_connected; 795 } 796 797 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x, 798 u32 max_y) 799 { 800 struct vbox_connector *vbox_connector; 801 struct drm_device *dev; 802 struct drm_display_mode *mode, *iterator; 803 804 vbox_connector = to_vbox_connector(connector); 805 dev = vbox_connector->base.dev; 806 list_for_each_entry_safe(mode, iterator, &connector->modes, head) { 807 list_del(&mode->head); 808 drm_mode_destroy(dev, mode); 809 } 810 811 return drm_helper_probe_single_connector_modes(connector, max_x, max_y); 812 } 813 814 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = { 815 .get_modes = vbox_get_modes, 816 }; 817 818 static const struct drm_connector_funcs vbox_connector_funcs = { 819 .detect = vbox_connector_detect, 820 .fill_modes = vbox_fill_modes, 821 .destroy = vbox_connector_destroy, 822 .reset = drm_atomic_helper_connector_reset, 823 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 824 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 825 }; 826 827 static int vbox_connector_init(struct drm_device *dev, 828 struct vbox_crtc *vbox_crtc, 829 struct drm_encoder *encoder) 830 { 831 struct vbox_connector *vbox_connector; 832 struct drm_connector *connector; 833 834 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL); 835 if (!vbox_connector) 836 return -ENOMEM; 837 838 connector = &vbox_connector->base; 839 vbox_connector->vbox_crtc = vbox_crtc; 840 841 drm_connector_init(dev, connector, &vbox_connector_funcs, 842 DRM_MODE_CONNECTOR_VGA); 843 drm_connector_helper_add(connector, &vbox_connector_helper_funcs); 844 845 connector->interlace_allowed = 0; 846 connector->doublescan_allowed = 0; 847 848 drm_mode_create_suggested_offset_properties(dev); 849 drm_object_attach_property(&connector->base, 850 dev->mode_config.suggested_x_property, 0); 851 drm_object_attach_property(&connector->base, 852 dev->mode_config.suggested_y_property, 0); 853 854 drm_connector_attach_encoder(connector, encoder); 855 856 return 0; 857 } 858 859 static struct drm_framebuffer *vbox_user_framebuffer_create( 860 struct drm_device *dev, 861 struct drm_file *filp, 862 const struct drm_mode_fb_cmd2 *mode_cmd) 863 { 864 struct vbox_private *vbox = 865 container_of(dev, struct vbox_private, ddev); 866 struct drm_gem_object *obj; 867 struct vbox_framebuffer *vbox_fb; 868 int ret = -ENOMEM; 869 870 obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); 871 if (!obj) 872 return ERR_PTR(-ENOENT); 873 874 vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL); 875 if (!vbox_fb) 876 goto err_unref_obj; 877 878 ret = vbox_framebuffer_init(vbox, vbox_fb, mode_cmd, obj); 879 if (ret) 880 goto err_free_vbox_fb; 881 882 return &vbox_fb->base; 883 884 err_free_vbox_fb: 885 kfree(vbox_fb); 886 err_unref_obj: 887 drm_gem_object_put_unlocked(obj); 888 return ERR_PTR(ret); 889 } 890 891 static const struct drm_mode_config_funcs vbox_mode_funcs = { 892 .fb_create = vbox_user_framebuffer_create, 893 .atomic_check = drm_atomic_helper_check, 894 .atomic_commit = drm_atomic_helper_commit, 895 }; 896 897 int vbox_mode_init(struct vbox_private *vbox) 898 { 899 struct drm_device *dev = &vbox->ddev; 900 struct drm_encoder *encoder; 901 struct vbox_crtc *vbox_crtc; 902 unsigned int i; 903 int ret; 904 905 drm_mode_config_init(dev); 906 907 dev->mode_config.funcs = (void *)&vbox_mode_funcs; 908 dev->mode_config.min_width = 0; 909 dev->mode_config.min_height = 0; 910 dev->mode_config.preferred_depth = 24; 911 dev->mode_config.max_width = VBE_DISPI_MAX_XRES; 912 dev->mode_config.max_height = VBE_DISPI_MAX_YRES; 913 914 for (i = 0; i < vbox->num_crtcs; ++i) { 915 vbox_crtc = vbox_crtc_init(dev, i); 916 if (IS_ERR(vbox_crtc)) { 917 ret = PTR_ERR(vbox_crtc); 918 goto err_drm_mode_cleanup; 919 } 920 encoder = vbox_encoder_init(dev, i); 921 if (!encoder) { 922 ret = -ENOMEM; 923 goto err_drm_mode_cleanup; 924 } 925 ret = vbox_connector_init(dev, vbox_crtc, encoder); 926 if (ret) 927 goto err_drm_mode_cleanup; 928 } 929 930 drm_mode_config_reset(dev); 931 return 0; 932 933 err_drm_mode_cleanup: 934 drm_mode_config_cleanup(dev); 935 return ret; 936 } 937 938 void vbox_mode_fini(struct vbox_private *vbox) 939 { 940 drm_mode_config_cleanup(&vbox->ddev); 941 } 942