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( 61 VBE_DISPI_INDEX_X_OFFSET, 62 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x); 63 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET, 64 vbox_crtc->fb_offset / pitch + vbox_crtc->y); 65 } 66 67 flags = VBVA_SCREEN_F_ACTIVE; 68 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK; 69 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0; 70 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id, 71 x_offset, y_offset, 72 vbox_crtc->x * bpp / 8 + 73 vbox_crtc->y * pitch, 74 pitch, width, height, bpp, flags); 75 } 76 77 static int vbox_set_view(struct drm_crtc *crtc) 78 { 79 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 80 struct vbox_private *vbox = crtc->dev->dev_private; 81 struct vbva_infoview *p; 82 83 /* 84 * Tell the host about the view. This design originally targeted the 85 * Windows XP driver architecture and assumed that each screen would 86 * have a dedicated frame buffer with the command buffer following it, 87 * the whole being a "view". The host works out which screen a command 88 * buffer belongs to by checking whether it is in the first view, then 89 * whether it is in the second and so on. The first match wins. We 90 * cheat around this by making the first view be the managed memory 91 * plus the first command buffer, the second the same plus the second 92 * buffer and so on. 93 */ 94 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p), 95 HGSMI_CH_VBVA, VBVA_INFO_VIEW); 96 if (!p) 97 return -ENOMEM; 98 99 p->view_index = vbox_crtc->crtc_id; 100 p->view_offset = vbox_crtc->fb_offset; 101 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset + 102 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE; 103 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset; 104 105 hgsmi_buffer_submit(vbox->guest_pool, p); 106 hgsmi_buffer_free(vbox->guest_pool, p); 107 108 return 0; 109 } 110 111 /* 112 * Try to map the layout of virtual screens to the range of the input device. 113 * Return true if we need to re-set the crtc modes due to screen offset 114 * changes. 115 */ 116 static bool vbox_set_up_input_mapping(struct vbox_private *vbox) 117 { 118 struct drm_crtc *crtci; 119 struct drm_connector *connectori; 120 struct drm_framebuffer *fb, *fb1 = NULL; 121 bool single_framebuffer = true; 122 bool old_single_framebuffer = vbox->single_framebuffer; 123 u16 width = 0, height = 0; 124 125 /* 126 * Are we using an X.Org-style single large frame-buffer for all crtcs? 127 * If so then screen layout can be deduced from the crtc offsets. 128 * Same fall-back if this is the fbdev frame-buffer. 129 */ 130 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 131 fb = crtci->primary->state->fb; 132 if (!fb) 133 continue; 134 135 if (!fb1) { 136 fb1 = fb; 137 if (to_vbox_framebuffer(fb1) == &vbox->afb) 138 break; 139 } else if (fb != fb1) { 140 single_framebuffer = false; 141 } 142 } 143 if (!fb1) 144 return false; 145 146 if (single_framebuffer) { 147 vbox->single_framebuffer = true; 148 vbox->input_mapping_width = fb1->width; 149 vbox->input_mapping_height = fb1->height; 150 return old_single_framebuffer != vbox->single_framebuffer; 151 } 152 /* Otherwise calculate the total span of all screens. */ 153 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list, 154 head) { 155 struct vbox_connector *vbox_connector = 156 to_vbox_connector(connectori); 157 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc; 158 159 width = max_t(u16, width, vbox_crtc->x_hint + 160 vbox_connector->mode_hint.width); 161 height = max_t(u16, height, vbox_crtc->y_hint + 162 vbox_connector->mode_hint.height); 163 } 164 165 vbox->single_framebuffer = false; 166 vbox->input_mapping_width = width; 167 vbox->input_mapping_height = height; 168 169 return old_single_framebuffer != vbox->single_framebuffer; 170 } 171 172 static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc, 173 struct drm_framebuffer *fb, 174 int x, int y) 175 { 176 struct vbox_bo *bo = gem_to_vbox_bo(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 = vbox_bo_gpu_offset(bo); 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 vbox_bo *bo; 307 int ret; 308 309 if (!new_state->fb) 310 return 0; 311 312 bo = gem_to_vbox_bo(to_vbox_framebuffer(new_state->fb)->obj); 313 ret = vbox_bo_pin(bo, TTM_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 vbox_bo *bo; 324 325 if (!old_state->fb) 326 return; 327 328 bo = gem_to_vbox_bo(to_vbox_framebuffer(old_state->fb)->obj); 329 vbox_bo_unpin(bo); 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 vbox_bo *bo = gem_to_vbox_bo(to_vbox_framebuffer(fb)->obj); 390 u32 width = plane->state->crtc_w; 391 u32 height = plane->state->crtc_h; 392 size_t data_size, mask_size; 393 u32 flags; 394 u8 *src; 395 396 /* 397 * VirtualBox uses the host windowing system to draw the cursor so 398 * moves are a no-op, we only need to upload new cursor sprites. 399 */ 400 if (fb == old_state->fb) 401 return; 402 403 mutex_lock(&vbox->hw_mutex); 404 405 vbox_crtc->cursor_enabled = true; 406 407 /* pinning is done in prepare/cleanup framebuffer */ 408 src = vbox_bo_kmap(bo); 409 if (IS_ERR(src)) { 410 mutex_unlock(&vbox->hw_mutex); 411 DRM_WARN("Could not kmap cursor bo, skipping update\n"); 412 return; 413 } 414 415 /* 416 * The mask must be calculated based on the alpha 417 * channel, one bit per ARGB word, and must be 32-bit 418 * padded. 419 */ 420 mask_size = ((width + 7) / 8 * height + 3) & ~3; 421 data_size = width * height * 4 + mask_size; 422 423 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size); 424 vbox_bo_kunmap(bo); 425 426 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE | 427 VBOX_MOUSE_POINTER_ALPHA; 428 hgsmi_update_pointer_shape(vbox->guest_pool, flags, 429 min_t(u32, max(fb->hot_x, 0), width), 430 min_t(u32, max(fb->hot_y, 0), height), 431 width, height, vbox->cursor_data, data_size); 432 433 mutex_unlock(&vbox->hw_mutex); 434 } 435 436 static void vbox_cursor_atomic_disable(struct drm_plane *plane, 437 struct drm_plane_state *old_state) 438 { 439 struct vbox_private *vbox = 440 container_of(plane->dev, struct vbox_private, ddev); 441 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc); 442 bool cursor_enabled = false; 443 struct drm_crtc *crtci; 444 445 mutex_lock(&vbox->hw_mutex); 446 447 vbox_crtc->cursor_enabled = false; 448 449 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 450 if (to_vbox_crtc(crtci)->cursor_enabled) 451 cursor_enabled = true; 452 } 453 454 if (!cursor_enabled) 455 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0, 456 0, 0, NULL, 0); 457 458 mutex_unlock(&vbox->hw_mutex); 459 } 460 461 static int vbox_cursor_prepare_fb(struct drm_plane *plane, 462 struct drm_plane_state *new_state) 463 { 464 struct vbox_bo *bo; 465 466 if (!new_state->fb) 467 return 0; 468 469 bo = gem_to_vbox_bo(to_vbox_framebuffer(new_state->fb)->obj); 470 return vbox_bo_pin(bo, TTM_PL_FLAG_SYSTEM); 471 } 472 473 static void vbox_cursor_cleanup_fb(struct drm_plane *plane, 474 struct drm_plane_state *old_state) 475 { 476 struct vbox_bo *bo; 477 478 if (!plane->state->fb) 479 return; 480 481 bo = gem_to_vbox_bo(to_vbox_framebuffer(plane->state->fb)->obj); 482 vbox_bo_unpin(bo); 483 } 484 485 static const u32 vbox_cursor_plane_formats[] = { 486 DRM_FORMAT_ARGB8888, 487 }; 488 489 static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = { 490 .atomic_check = vbox_cursor_atomic_check, 491 .atomic_update = vbox_cursor_atomic_update, 492 .atomic_disable = vbox_cursor_atomic_disable, 493 .prepare_fb = vbox_cursor_prepare_fb, 494 .cleanup_fb = vbox_cursor_cleanup_fb, 495 }; 496 497 static const struct drm_plane_funcs vbox_cursor_plane_funcs = { 498 .update_plane = drm_atomic_helper_update_plane, 499 .disable_plane = drm_atomic_helper_disable_plane, 500 .destroy = drm_primary_helper_destroy, 501 .reset = drm_atomic_helper_plane_reset, 502 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 503 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 504 }; 505 506 static const u32 vbox_primary_plane_formats[] = { 507 DRM_FORMAT_XRGB8888, 508 DRM_FORMAT_ARGB8888, 509 }; 510 511 static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = { 512 .atomic_check = vbox_primary_atomic_check, 513 .atomic_update = vbox_primary_atomic_update, 514 .atomic_disable = vbox_primary_atomic_disable, 515 .prepare_fb = vbox_primary_prepare_fb, 516 .cleanup_fb = vbox_primary_cleanup_fb, 517 }; 518 519 static const struct drm_plane_funcs vbox_primary_plane_funcs = { 520 .update_plane = drm_atomic_helper_update_plane, 521 .disable_plane = drm_atomic_helper_disable_plane, 522 .destroy = drm_primary_helper_destroy, 523 .reset = drm_atomic_helper_plane_reset, 524 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 525 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 526 }; 527 528 static struct drm_plane *vbox_create_plane(struct vbox_private *vbox, 529 unsigned int possible_crtcs, 530 enum drm_plane_type type) 531 { 532 const struct drm_plane_helper_funcs *helper_funcs = NULL; 533 const struct drm_plane_funcs *funcs; 534 struct drm_plane *plane; 535 const u32 *formats; 536 int num_formats; 537 int err; 538 539 if (type == DRM_PLANE_TYPE_PRIMARY) { 540 funcs = &vbox_primary_plane_funcs; 541 formats = vbox_primary_plane_formats; 542 helper_funcs = &vbox_primary_helper_funcs; 543 num_formats = ARRAY_SIZE(vbox_primary_plane_formats); 544 } else if (type == DRM_PLANE_TYPE_CURSOR) { 545 funcs = &vbox_cursor_plane_funcs; 546 formats = vbox_cursor_plane_formats; 547 helper_funcs = &vbox_cursor_helper_funcs; 548 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats); 549 } else { 550 return ERR_PTR(-EINVAL); 551 } 552 553 plane = kzalloc(sizeof(*plane), GFP_KERNEL); 554 if (!plane) 555 return ERR_PTR(-ENOMEM); 556 557 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs, 558 funcs, formats, num_formats, 559 NULL, type, NULL); 560 if (err) 561 goto free_plane; 562 563 drm_plane_helper_add(plane, helper_funcs); 564 565 return plane; 566 567 free_plane: 568 kfree(plane); 569 return ERR_PTR(-EINVAL); 570 } 571 572 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i) 573 { 574 struct vbox_private *vbox = 575 container_of(dev, struct vbox_private, ddev); 576 struct drm_plane *cursor = NULL; 577 struct vbox_crtc *vbox_crtc; 578 struct drm_plane *primary; 579 u32 caps = 0; 580 int ret; 581 582 ret = hgsmi_query_conf(vbox->guest_pool, 583 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps); 584 if (ret) 585 return ERR_PTR(ret); 586 587 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL); 588 if (!vbox_crtc) 589 return ERR_PTR(-ENOMEM); 590 591 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY); 592 if (IS_ERR(primary)) { 593 ret = PTR_ERR(primary); 594 goto free_mem; 595 } 596 597 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) { 598 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR); 599 if (IS_ERR(cursor)) { 600 ret = PTR_ERR(cursor); 601 goto clean_primary; 602 } 603 } else { 604 DRM_WARN("VirtualBox host is too old, no cursor support\n"); 605 } 606 607 vbox_crtc->crtc_id = i; 608 609 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor, 610 &vbox_crtc_funcs, NULL); 611 if (ret) 612 goto clean_cursor; 613 614 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256); 615 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs); 616 617 return vbox_crtc; 618 619 clean_cursor: 620 if (cursor) { 621 drm_plane_cleanup(cursor); 622 kfree(cursor); 623 } 624 clean_primary: 625 drm_plane_cleanup(primary); 626 kfree(primary); 627 free_mem: 628 kfree(vbox_crtc); 629 return ERR_PTR(ret); 630 } 631 632 static void vbox_encoder_destroy(struct drm_encoder *encoder) 633 { 634 drm_encoder_cleanup(encoder); 635 kfree(encoder); 636 } 637 638 static const struct drm_encoder_funcs vbox_enc_funcs = { 639 .destroy = vbox_encoder_destroy, 640 }; 641 642 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev, 643 unsigned int i) 644 { 645 struct vbox_encoder *vbox_encoder; 646 647 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL); 648 if (!vbox_encoder) 649 return NULL; 650 651 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs, 652 DRM_MODE_ENCODER_DAC, NULL); 653 654 vbox_encoder->base.possible_crtcs = 1 << i; 655 return &vbox_encoder->base; 656 } 657 658 /* 659 * Generate EDID data with a mode-unique serial number for the virtual 660 * monitor to try to persuade Unity that different modes correspond to 661 * different monitors and it should not try to force the same resolution on 662 * them. 663 */ 664 static void vbox_set_edid(struct drm_connector *connector, int width, 665 int height) 666 { 667 enum { EDID_SIZE = 128 }; 668 unsigned char edid[EDID_SIZE] = { 669 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */ 670 0x58, 0x58, /* manufacturer (VBX) */ 671 0x00, 0x00, /* product code */ 672 0x00, 0x00, 0x00, 0x00, /* serial number goes here */ 673 0x01, /* week of manufacture */ 674 0x00, /* year of manufacture */ 675 0x01, 0x03, /* EDID version */ 676 0x80, /* capabilities - digital */ 677 0x00, /* horiz. res in cm, zero for projectors */ 678 0x00, /* vert. res in cm */ 679 0x78, /* display gamma (120 == 2.2). */ 680 0xEE, /* features (standby, suspend, off, RGB, std */ 681 /* colour space, preferred timing mode) */ 682 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54, 683 /* chromaticity for standard colour space. */ 684 0x00, 0x00, 0x00, /* no default timings */ 685 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 686 0x01, 0x01, 687 0x01, 0x01, 0x01, 0x01, /* no standard timings */ 688 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 689 0x02, 0x02, 690 /* descriptor block 1 goes below */ 691 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 692 /* descriptor block 2, monitor ranges */ 693 0x00, 0x00, 0x00, 0xFD, 0x00, 694 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 695 0x20, 0x20, 696 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */ 697 0x20, 698 /* descriptor block 3, monitor name */ 699 0x00, 0x00, 0x00, 0xFC, 0x00, 700 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', 701 '\n', 702 /* descriptor block 4: dummy data */ 703 0x00, 0x00, 0x00, 0x10, 0x00, 704 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 705 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 706 0x20, 707 0x00, /* number of extensions */ 708 0x00 /* checksum goes here */ 709 }; 710 int clock = (width + 6) * (height + 6) * 60 / 10000; 711 unsigned int i, sum = 0; 712 713 edid[12] = width & 0xff; 714 edid[13] = width >> 8; 715 edid[14] = height & 0xff; 716 edid[15] = height >> 8; 717 edid[54] = clock & 0xff; 718 edid[55] = clock >> 8; 719 edid[56] = width & 0xff; 720 edid[58] = (width >> 4) & 0xf0; 721 edid[59] = height & 0xff; 722 edid[61] = (height >> 4) & 0xf0; 723 for (i = 0; i < EDID_SIZE - 1; ++i) 724 sum += edid[i]; 725 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF; 726 drm_connector_update_edid_property(connector, (struct edid *)edid); 727 } 728 729 static int vbox_get_modes(struct drm_connector *connector) 730 { 731 struct vbox_connector *vbox_connector = NULL; 732 struct drm_display_mode *mode = NULL; 733 struct vbox_private *vbox = NULL; 734 unsigned int num_modes = 0; 735 int preferred_width, preferred_height; 736 737 vbox_connector = to_vbox_connector(connector); 738 vbox = connector->dev->dev_private; 739 740 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) + 741 HOST_FLAGS_OFFSET); 742 if (vbox_connector->vbox_crtc->crtc_id == 0) 743 vbox_report_caps(vbox); 744 745 num_modes = drm_add_modes_noedid(connector, 2560, 1600); 746 preferred_width = vbox_connector->mode_hint.width ? 747 vbox_connector->mode_hint.width : 1024; 748 preferred_height = vbox_connector->mode_hint.height ? 749 vbox_connector->mode_hint.height : 768; 750 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 751 60, false, false, false); 752 if (mode) { 753 mode->type |= DRM_MODE_TYPE_PREFERRED; 754 drm_mode_probed_add(connector, mode); 755 ++num_modes; 756 } 757 vbox_set_edid(connector, preferred_width, preferred_height); 758 759 if (vbox_connector->vbox_crtc->x_hint != -1) 760 drm_object_property_set_value(&connector->base, 761 vbox->ddev.mode_config.suggested_x_property, 762 vbox_connector->vbox_crtc->x_hint); 763 else 764 drm_object_property_set_value(&connector->base, 765 vbox->ddev.mode_config.suggested_x_property, 0); 766 767 if (vbox_connector->vbox_crtc->y_hint != -1) 768 drm_object_property_set_value(&connector->base, 769 vbox->ddev.mode_config.suggested_y_property, 770 vbox_connector->vbox_crtc->y_hint); 771 else 772 drm_object_property_set_value(&connector->base, 773 vbox->ddev.mode_config.suggested_y_property, 0); 774 775 return num_modes; 776 } 777 778 static void vbox_connector_destroy(struct drm_connector *connector) 779 { 780 drm_connector_unregister(connector); 781 drm_connector_cleanup(connector); 782 kfree(connector); 783 } 784 785 static enum drm_connector_status 786 vbox_connector_detect(struct drm_connector *connector, bool force) 787 { 788 struct vbox_connector *vbox_connector; 789 790 vbox_connector = to_vbox_connector(connector); 791 792 return vbox_connector->mode_hint.disconnected ? 793 connector_status_disconnected : connector_status_connected; 794 } 795 796 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x, 797 u32 max_y) 798 { 799 struct vbox_connector *vbox_connector; 800 struct drm_device *dev; 801 struct drm_display_mode *mode, *iterator; 802 803 vbox_connector = to_vbox_connector(connector); 804 dev = vbox_connector->base.dev; 805 list_for_each_entry_safe(mode, iterator, &connector->modes, head) { 806 list_del(&mode->head); 807 drm_mode_destroy(dev, mode); 808 } 809 810 return drm_helper_probe_single_connector_modes(connector, max_x, max_y); 811 } 812 813 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = { 814 .get_modes = vbox_get_modes, 815 }; 816 817 static const struct drm_connector_funcs vbox_connector_funcs = { 818 .detect = vbox_connector_detect, 819 .fill_modes = vbox_fill_modes, 820 .destroy = vbox_connector_destroy, 821 .reset = drm_atomic_helper_connector_reset, 822 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 823 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 824 }; 825 826 static int vbox_connector_init(struct drm_device *dev, 827 struct vbox_crtc *vbox_crtc, 828 struct drm_encoder *encoder) 829 { 830 struct vbox_connector *vbox_connector; 831 struct drm_connector *connector; 832 833 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL); 834 if (!vbox_connector) 835 return -ENOMEM; 836 837 connector = &vbox_connector->base; 838 vbox_connector->vbox_crtc = vbox_crtc; 839 840 drm_connector_init(dev, connector, &vbox_connector_funcs, 841 DRM_MODE_CONNECTOR_VGA); 842 drm_connector_helper_add(connector, &vbox_connector_helper_funcs); 843 844 connector->interlace_allowed = 0; 845 connector->doublescan_allowed = 0; 846 847 drm_mode_create_suggested_offset_properties(dev); 848 drm_object_attach_property(&connector->base, 849 dev->mode_config.suggested_x_property, 0); 850 drm_object_attach_property(&connector->base, 851 dev->mode_config.suggested_y_property, 0); 852 853 drm_connector_attach_encoder(connector, encoder); 854 855 return 0; 856 } 857 858 static struct drm_framebuffer *vbox_user_framebuffer_create( 859 struct drm_device *dev, 860 struct drm_file *filp, 861 const struct drm_mode_fb_cmd2 *mode_cmd) 862 { 863 struct vbox_private *vbox = 864 container_of(dev, struct vbox_private, ddev); 865 struct drm_gem_object *obj; 866 struct vbox_framebuffer *vbox_fb; 867 int ret = -ENOMEM; 868 869 obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); 870 if (!obj) 871 return ERR_PTR(-ENOENT); 872 873 vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL); 874 if (!vbox_fb) 875 goto err_unref_obj; 876 877 ret = vbox_framebuffer_init(vbox, vbox_fb, mode_cmd, obj); 878 if (ret) 879 goto err_free_vbox_fb; 880 881 return &vbox_fb->base; 882 883 err_free_vbox_fb: 884 kfree(vbox_fb); 885 err_unref_obj: 886 drm_gem_object_put_unlocked(obj); 887 return ERR_PTR(ret); 888 } 889 890 static const struct drm_mode_config_funcs vbox_mode_funcs = { 891 .fb_create = vbox_user_framebuffer_create, 892 .atomic_check = drm_atomic_helper_check, 893 .atomic_commit = drm_atomic_helper_commit, 894 }; 895 896 int vbox_mode_init(struct vbox_private *vbox) 897 { 898 struct drm_device *dev = &vbox->ddev; 899 struct drm_encoder *encoder; 900 struct vbox_crtc *vbox_crtc; 901 unsigned int i; 902 int ret; 903 904 drm_mode_config_init(dev); 905 906 dev->mode_config.funcs = (void *)&vbox_mode_funcs; 907 dev->mode_config.min_width = 0; 908 dev->mode_config.min_height = 0; 909 dev->mode_config.preferred_depth = 24; 910 dev->mode_config.max_width = VBE_DISPI_MAX_XRES; 911 dev->mode_config.max_height = VBE_DISPI_MAX_YRES; 912 913 for (i = 0; i < vbox->num_crtcs; ++i) { 914 vbox_crtc = vbox_crtc_init(dev, i); 915 if (IS_ERR(vbox_crtc)) { 916 ret = PTR_ERR(vbox_crtc); 917 goto err_drm_mode_cleanup; 918 } 919 encoder = vbox_encoder_init(dev, i); 920 if (!encoder) { 921 ret = -ENOMEM; 922 goto err_drm_mode_cleanup; 923 } 924 ret = vbox_connector_init(dev, vbox_crtc, encoder); 925 if (ret) 926 goto err_drm_mode_cleanup; 927 } 928 929 drm_mode_config_reset(dev); 930 return 0; 931 932 err_drm_mode_cleanup: 933 drm_mode_config_cleanup(dev); 934 return ret; 935 } 936 937 void vbox_mode_fini(struct vbox_private *vbox) 938 { 939 drm_mode_config_cleanup(&vbox->ddev); 940 } 941