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_fb_helper.h> 17 #include <drm/drm_fourcc.h> 18 #include <drm/drm_gem_framebuffer_helper.h> 19 #include <drm/drm_plane_helper.h> 20 #include <drm/drm_probe_helper.h> 21 #include <drm/drm_vblank.h> 22 23 #include "hgsmi_channels.h" 24 #include "vbox_drv.h" 25 #include "vboxvideo.h" 26 27 /* 28 * Set a graphics mode. Poke any required values into registers, do an HGSMI 29 * mode set and tell the host we support advanced graphics functions. 30 */ 31 static void vbox_do_modeset(struct drm_crtc *crtc) 32 { 33 struct drm_framebuffer *fb = crtc->primary->state->fb; 34 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 35 struct vbox_private *vbox; 36 int width, height, bpp, pitch; 37 u16 flags; 38 s32 x_offset, y_offset; 39 40 vbox = crtc->dev->dev_private; 41 width = vbox_crtc->width ? vbox_crtc->width : 640; 42 height = vbox_crtc->height ? vbox_crtc->height : 480; 43 bpp = fb ? fb->format->cpp[0] * 8 : 32; 44 pitch = fb ? fb->pitches[0] : width * bpp / 8; 45 x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint; 46 y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint; 47 48 /* 49 * This is the old way of setting graphics modes. It assumed one screen 50 * and a frame-buffer at the start of video RAM. On older versions of 51 * VirtualBox, certain parts of the code still assume that the first 52 * screen is programmed this way, so try to fake it. 53 */ 54 if (vbox_crtc->crtc_id == 0 && fb && 55 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y && 56 vbox_crtc->fb_offset % (bpp / 8) == 0) { 57 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width); 58 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height); 59 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp); 60 vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp); 61 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED); 62 vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET, 63 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x); 64 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET, 65 vbox_crtc->fb_offset / pitch + vbox_crtc->y); 66 } 67 68 flags = VBVA_SCREEN_F_ACTIVE; 69 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK; 70 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0; 71 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id, 72 x_offset, y_offset, 73 vbox_crtc->x * bpp / 8 + 74 vbox_crtc->y * pitch, 75 pitch, width, height, bpp, flags); 76 } 77 78 static int vbox_set_view(struct drm_crtc *crtc) 79 { 80 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 81 struct vbox_private *vbox = crtc->dev->dev_private; 82 struct vbva_infoview *p; 83 84 /* 85 * Tell the host about the view. This design originally targeted the 86 * Windows XP driver architecture and assumed that each screen would 87 * have a dedicated frame buffer with the command buffer following it, 88 * the whole being a "view". The host works out which screen a command 89 * buffer belongs to by checking whether it is in the first view, then 90 * whether it is in the second and so on. The first match wins. We 91 * cheat around this by making the first view be the managed memory 92 * plus the first command buffer, the second the same plus the second 93 * buffer and so on. 94 */ 95 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p), 96 HGSMI_CH_VBVA, VBVA_INFO_VIEW); 97 if (!p) 98 return -ENOMEM; 99 100 p->view_index = vbox_crtc->crtc_id; 101 p->view_offset = vbox_crtc->fb_offset; 102 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset + 103 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE; 104 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset; 105 106 hgsmi_buffer_submit(vbox->guest_pool, p); 107 hgsmi_buffer_free(vbox->guest_pool, p); 108 109 return 0; 110 } 111 112 /* 113 * Try to map the layout of virtual screens to the range of the input device. 114 * Return true if we need to re-set the crtc modes due to screen offset 115 * changes. 116 */ 117 static bool vbox_set_up_input_mapping(struct vbox_private *vbox) 118 { 119 struct drm_crtc *crtci; 120 struct drm_connector *connectori; 121 struct drm_framebuffer *fb, *fb1 = NULL; 122 bool single_framebuffer = true; 123 bool old_single_framebuffer = vbox->single_framebuffer; 124 u16 width = 0, height = 0; 125 126 /* 127 * Are we using an X.Org-style single large frame-buffer for all crtcs? 128 * If so then screen layout can be deduced from the crtc offsets. 129 * Same fall-back if this is the fbdev frame-buffer. 130 */ 131 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 132 fb = crtci->primary->state->fb; 133 if (!fb) 134 continue; 135 136 if (!fb1) { 137 fb1 = fb; 138 if (fb1 == vbox->ddev.fb_helper->fb) 139 break; 140 } else if (fb != fb1) { 141 single_framebuffer = false; 142 } 143 } 144 if (!fb1) 145 return false; 146 147 if (single_framebuffer) { 148 vbox->single_framebuffer = true; 149 vbox->input_mapping_width = fb1->width; 150 vbox->input_mapping_height = fb1->height; 151 return old_single_framebuffer != vbox->single_framebuffer; 152 } 153 /* Otherwise calculate the total span of all screens. */ 154 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list, 155 head) { 156 struct vbox_connector *vbox_connector = 157 to_vbox_connector(connectori); 158 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc; 159 160 width = max_t(u16, width, vbox_crtc->x_hint + 161 vbox_connector->mode_hint.width); 162 height = max_t(u16, height, vbox_crtc->y_hint + 163 vbox_connector->mode_hint.height); 164 } 165 166 vbox->single_framebuffer = false; 167 vbox->input_mapping_width = width; 168 vbox->input_mapping_height = height; 169 170 return old_single_framebuffer != vbox->single_framebuffer; 171 } 172 173 static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc, 174 struct drm_framebuffer *fb, 175 int x, int y) 176 { 177 struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]); 178 struct vbox_private *vbox = crtc->dev->dev_private; 179 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 180 bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state); 181 182 mutex_lock(&vbox->hw_mutex); 183 184 if (crtc->state->enable) { 185 vbox_crtc->width = crtc->state->mode.hdisplay; 186 vbox_crtc->height = crtc->state->mode.vdisplay; 187 } 188 189 vbox_crtc->x = x; 190 vbox_crtc->y = y; 191 vbox_crtc->fb_offset = drm_gem_vram_offset(gbo); 192 193 /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */ 194 if (needs_modeset && vbox_set_up_input_mapping(vbox)) { 195 struct drm_crtc *crtci; 196 197 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, 198 head) { 199 if (crtci == crtc) 200 continue; 201 vbox_do_modeset(crtci); 202 } 203 } 204 205 vbox_set_view(crtc); 206 vbox_do_modeset(crtc); 207 208 if (needs_modeset) 209 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0, 210 vbox->input_mapping_width, 211 vbox->input_mapping_height); 212 213 mutex_unlock(&vbox->hw_mutex); 214 } 215 216 static void vbox_crtc_atomic_enable(struct drm_crtc *crtc, 217 struct drm_crtc_state *old_crtc_state) 218 { 219 } 220 221 static void vbox_crtc_atomic_disable(struct drm_crtc *crtc, 222 struct drm_crtc_state *old_crtc_state) 223 { 224 } 225 226 static void vbox_crtc_atomic_flush(struct drm_crtc *crtc, 227 struct drm_crtc_state *old_crtc_state) 228 { 229 struct drm_pending_vblank_event *event; 230 unsigned long flags; 231 232 if (crtc->state && crtc->state->event) { 233 event = crtc->state->event; 234 crtc->state->event = NULL; 235 236 spin_lock_irqsave(&crtc->dev->event_lock, flags); 237 drm_crtc_send_vblank_event(crtc, event); 238 spin_unlock_irqrestore(&crtc->dev->event_lock, flags); 239 } 240 } 241 242 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = { 243 .atomic_enable = vbox_crtc_atomic_enable, 244 .atomic_disable = vbox_crtc_atomic_disable, 245 .atomic_flush = vbox_crtc_atomic_flush, 246 }; 247 248 static void vbox_crtc_destroy(struct drm_crtc *crtc) 249 { 250 drm_crtc_cleanup(crtc); 251 kfree(crtc); 252 } 253 254 static const struct drm_crtc_funcs vbox_crtc_funcs = { 255 .set_config = drm_atomic_helper_set_config, 256 .page_flip = drm_atomic_helper_page_flip, 257 /* .gamma_set = vbox_crtc_gamma_set, */ 258 .destroy = vbox_crtc_destroy, 259 .reset = drm_atomic_helper_crtc_reset, 260 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, 261 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, 262 }; 263 264 static int vbox_primary_atomic_check(struct drm_plane *plane, 265 struct drm_plane_state *new_state) 266 { 267 struct drm_crtc_state *crtc_state = NULL; 268 269 if (new_state->crtc) { 270 crtc_state = drm_atomic_get_existing_crtc_state( 271 new_state->state, new_state->crtc); 272 if (WARN_ON(!crtc_state)) 273 return -EINVAL; 274 } 275 276 return drm_atomic_helper_check_plane_state(new_state, crtc_state, 277 DRM_PLANE_HELPER_NO_SCALING, 278 DRM_PLANE_HELPER_NO_SCALING, 279 false, true); 280 } 281 282 static void vbox_primary_atomic_update(struct drm_plane *plane, 283 struct drm_plane_state *old_state) 284 { 285 struct drm_crtc *crtc = plane->state->crtc; 286 struct drm_framebuffer *fb = plane->state->fb; 287 struct vbox_private *vbox = fb->dev->dev_private; 288 struct drm_mode_rect *clips; 289 uint32_t num_clips, i; 290 291 vbox_crtc_set_base_and_mode(crtc, fb, 292 plane->state->src_x >> 16, 293 plane->state->src_y >> 16); 294 295 /* Send information about dirty rectangles to VBVA. */ 296 297 clips = drm_plane_get_damage_clips(plane->state); 298 num_clips = drm_plane_get_damage_clips_count(plane->state); 299 300 if (!num_clips) 301 return; 302 303 mutex_lock(&vbox->hw_mutex); 304 305 for (i = 0; i < num_clips; ++i, ++clips) { 306 struct vbva_cmd_hdr cmd_hdr; 307 unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id; 308 309 cmd_hdr.x = (s16)clips->x1; 310 cmd_hdr.y = (s16)clips->y1; 311 cmd_hdr.w = (u16)clips->x2 - clips->x1; 312 cmd_hdr.h = (u16)clips->y2 - clips->y1; 313 314 if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id], 315 vbox->guest_pool)) 316 continue; 317 318 vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool, 319 &cmd_hdr, sizeof(cmd_hdr)); 320 vbva_buffer_end_update(&vbox->vbva_info[crtc_id]); 321 } 322 323 mutex_unlock(&vbox->hw_mutex); 324 } 325 326 static void vbox_primary_atomic_disable(struct drm_plane *plane, 327 struct drm_plane_state *old_state) 328 { 329 struct drm_crtc *crtc = old_state->crtc; 330 331 /* vbox_do_modeset checks plane->state->fb and will disable if NULL */ 332 vbox_crtc_set_base_and_mode(crtc, old_state->fb, 333 old_state->src_x >> 16, 334 old_state->src_y >> 16); 335 } 336 337 static int vbox_cursor_atomic_check(struct drm_plane *plane, 338 struct drm_plane_state *new_state) 339 { 340 struct drm_crtc_state *crtc_state = NULL; 341 u32 width = new_state->crtc_w; 342 u32 height = new_state->crtc_h; 343 int ret; 344 345 if (new_state->crtc) { 346 crtc_state = drm_atomic_get_existing_crtc_state( 347 new_state->state, new_state->crtc); 348 if (WARN_ON(!crtc_state)) 349 return -EINVAL; 350 } 351 352 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state, 353 DRM_PLANE_HELPER_NO_SCALING, 354 DRM_PLANE_HELPER_NO_SCALING, 355 true, true); 356 if (ret) 357 return ret; 358 359 if (!new_state->fb) 360 return 0; 361 362 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT || 363 width == 0 || height == 0) 364 return -EINVAL; 365 366 return 0; 367 } 368 369 /* 370 * Copy the ARGB image and generate the mask, which is needed in case the host 371 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set 372 * if the corresponding alpha value in the ARGB image is greater than 0xF0. 373 */ 374 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height, 375 size_t mask_size) 376 { 377 size_t line_size = (width + 7) / 8; 378 u32 i, j; 379 380 memcpy(dst + mask_size, src, width * height * 4); 381 for (i = 0; i < height; ++i) 382 for (j = 0; j < width; ++j) 383 if (((u32 *)src)[i * width + j] > 0xf0000000) 384 dst[i * line_size + j / 8] |= (0x80 >> (j % 8)); 385 } 386 387 static void vbox_cursor_atomic_update(struct drm_plane *plane, 388 struct drm_plane_state *old_state) 389 { 390 struct vbox_private *vbox = 391 container_of(plane->dev, struct vbox_private, ddev); 392 struct vbox_crtc *vbox_crtc = to_vbox_crtc(plane->state->crtc); 393 struct drm_framebuffer *fb = plane->state->fb; 394 struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]); 395 u32 width = plane->state->crtc_w; 396 u32 height = plane->state->crtc_h; 397 size_t data_size, mask_size; 398 u32 flags; 399 u8 *src; 400 401 /* 402 * VirtualBox uses the host windowing system to draw the cursor so 403 * moves are a no-op, we only need to upload new cursor sprites. 404 */ 405 if (fb == old_state->fb) 406 return; 407 408 mutex_lock(&vbox->hw_mutex); 409 410 vbox_crtc->cursor_enabled = true; 411 412 /* pinning is done in prepare/cleanup framebuffer */ 413 src = drm_gem_vram_kmap(gbo, true, NULL); 414 if (IS_ERR(src)) { 415 mutex_unlock(&vbox->hw_mutex); 416 DRM_WARN("Could not kmap cursor bo, skipping update\n"); 417 return; 418 } 419 420 /* 421 * The mask must be calculated based on the alpha 422 * channel, one bit per ARGB word, and must be 32-bit 423 * padded. 424 */ 425 mask_size = ((width + 7) / 8 * height + 3) & ~3; 426 data_size = width * height * 4 + mask_size; 427 428 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size); 429 drm_gem_vram_kunmap(gbo); 430 431 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE | 432 VBOX_MOUSE_POINTER_ALPHA; 433 hgsmi_update_pointer_shape(vbox->guest_pool, flags, 434 min_t(u32, max(fb->hot_x, 0), width), 435 min_t(u32, max(fb->hot_y, 0), height), 436 width, height, vbox->cursor_data, data_size); 437 438 mutex_unlock(&vbox->hw_mutex); 439 } 440 441 static void vbox_cursor_atomic_disable(struct drm_plane *plane, 442 struct drm_plane_state *old_state) 443 { 444 struct vbox_private *vbox = 445 container_of(plane->dev, struct vbox_private, ddev); 446 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc); 447 bool cursor_enabled = false; 448 struct drm_crtc *crtci; 449 450 mutex_lock(&vbox->hw_mutex); 451 452 vbox_crtc->cursor_enabled = false; 453 454 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 455 if (to_vbox_crtc(crtci)->cursor_enabled) 456 cursor_enabled = true; 457 } 458 459 if (!cursor_enabled) 460 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0, 461 0, 0, NULL, 0); 462 463 mutex_unlock(&vbox->hw_mutex); 464 } 465 466 static const u32 vbox_cursor_plane_formats[] = { 467 DRM_FORMAT_ARGB8888, 468 }; 469 470 static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = { 471 .atomic_check = vbox_cursor_atomic_check, 472 .atomic_update = vbox_cursor_atomic_update, 473 .atomic_disable = vbox_cursor_atomic_disable, 474 .prepare_fb = drm_gem_vram_plane_helper_prepare_fb, 475 .cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb, 476 }; 477 478 static const struct drm_plane_funcs vbox_cursor_plane_funcs = { 479 .update_plane = drm_atomic_helper_update_plane, 480 .disable_plane = drm_atomic_helper_disable_plane, 481 .destroy = drm_primary_helper_destroy, 482 .reset = drm_atomic_helper_plane_reset, 483 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 484 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 485 }; 486 487 static const u32 vbox_primary_plane_formats[] = { 488 DRM_FORMAT_XRGB8888, 489 DRM_FORMAT_ARGB8888, 490 }; 491 492 static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = { 493 .atomic_check = vbox_primary_atomic_check, 494 .atomic_update = vbox_primary_atomic_update, 495 .atomic_disable = vbox_primary_atomic_disable, 496 .prepare_fb = drm_gem_vram_plane_helper_prepare_fb, 497 .cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb, 498 }; 499 500 static const struct drm_plane_funcs vbox_primary_plane_funcs = { 501 .update_plane = drm_atomic_helper_update_plane, 502 .disable_plane = drm_atomic_helper_disable_plane, 503 .destroy = drm_primary_helper_destroy, 504 .reset = drm_atomic_helper_plane_reset, 505 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 506 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 507 }; 508 509 static struct drm_plane *vbox_create_plane(struct vbox_private *vbox, 510 unsigned int possible_crtcs, 511 enum drm_plane_type type) 512 { 513 const struct drm_plane_helper_funcs *helper_funcs = NULL; 514 const struct drm_plane_funcs *funcs; 515 struct drm_plane *plane; 516 const u32 *formats; 517 int num_formats; 518 int err; 519 520 if (type == DRM_PLANE_TYPE_PRIMARY) { 521 funcs = &vbox_primary_plane_funcs; 522 formats = vbox_primary_plane_formats; 523 helper_funcs = &vbox_primary_helper_funcs; 524 num_formats = ARRAY_SIZE(vbox_primary_plane_formats); 525 } else if (type == DRM_PLANE_TYPE_CURSOR) { 526 funcs = &vbox_cursor_plane_funcs; 527 formats = vbox_cursor_plane_formats; 528 helper_funcs = &vbox_cursor_helper_funcs; 529 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats); 530 } else { 531 return ERR_PTR(-EINVAL); 532 } 533 534 plane = kzalloc(sizeof(*plane), GFP_KERNEL); 535 if (!plane) 536 return ERR_PTR(-ENOMEM); 537 538 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs, 539 funcs, formats, num_formats, 540 NULL, type, NULL); 541 if (err) 542 goto free_plane; 543 544 drm_plane_helper_add(plane, helper_funcs); 545 546 return plane; 547 548 free_plane: 549 kfree(plane); 550 return ERR_PTR(-EINVAL); 551 } 552 553 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i) 554 { 555 struct vbox_private *vbox = 556 container_of(dev, struct vbox_private, ddev); 557 struct drm_plane *cursor = NULL; 558 struct vbox_crtc *vbox_crtc; 559 struct drm_plane *primary; 560 u32 caps = 0; 561 int ret; 562 563 ret = hgsmi_query_conf(vbox->guest_pool, 564 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps); 565 if (ret) 566 return ERR_PTR(ret); 567 568 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL); 569 if (!vbox_crtc) 570 return ERR_PTR(-ENOMEM); 571 572 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY); 573 if (IS_ERR(primary)) { 574 ret = PTR_ERR(primary); 575 goto free_mem; 576 } 577 578 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) { 579 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR); 580 if (IS_ERR(cursor)) { 581 ret = PTR_ERR(cursor); 582 goto clean_primary; 583 } 584 } else { 585 DRM_WARN("VirtualBox host is too old, no cursor support\n"); 586 } 587 588 vbox_crtc->crtc_id = i; 589 590 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor, 591 &vbox_crtc_funcs, NULL); 592 if (ret) 593 goto clean_cursor; 594 595 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256); 596 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs); 597 598 return vbox_crtc; 599 600 clean_cursor: 601 if (cursor) { 602 drm_plane_cleanup(cursor); 603 kfree(cursor); 604 } 605 clean_primary: 606 drm_plane_cleanup(primary); 607 kfree(primary); 608 free_mem: 609 kfree(vbox_crtc); 610 return ERR_PTR(ret); 611 } 612 613 static void vbox_encoder_destroy(struct drm_encoder *encoder) 614 { 615 drm_encoder_cleanup(encoder); 616 kfree(encoder); 617 } 618 619 static const struct drm_encoder_funcs vbox_enc_funcs = { 620 .destroy = vbox_encoder_destroy, 621 }; 622 623 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev, 624 unsigned int i) 625 { 626 struct vbox_encoder *vbox_encoder; 627 628 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL); 629 if (!vbox_encoder) 630 return NULL; 631 632 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs, 633 DRM_MODE_ENCODER_DAC, NULL); 634 635 vbox_encoder->base.possible_crtcs = 1 << i; 636 return &vbox_encoder->base; 637 } 638 639 /* 640 * Generate EDID data with a mode-unique serial number for the virtual 641 * monitor to try to persuade Unity that different modes correspond to 642 * different monitors and it should not try to force the same resolution on 643 * them. 644 */ 645 static void vbox_set_edid(struct drm_connector *connector, int width, 646 int height) 647 { 648 enum { EDID_SIZE = 128 }; 649 unsigned char edid[EDID_SIZE] = { 650 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */ 651 0x58, 0x58, /* manufacturer (VBX) */ 652 0x00, 0x00, /* product code */ 653 0x00, 0x00, 0x00, 0x00, /* serial number goes here */ 654 0x01, /* week of manufacture */ 655 0x00, /* year of manufacture */ 656 0x01, 0x03, /* EDID version */ 657 0x80, /* capabilities - digital */ 658 0x00, /* horiz. res in cm, zero for projectors */ 659 0x00, /* vert. res in cm */ 660 0x78, /* display gamma (120 == 2.2). */ 661 0xEE, /* features (standby, suspend, off, RGB, std */ 662 /* colour space, preferred timing mode) */ 663 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54, 664 /* chromaticity for standard colour space. */ 665 0x00, 0x00, 0x00, /* no default timings */ 666 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 667 0x01, 0x01, 668 0x01, 0x01, 0x01, 0x01, /* no standard timings */ 669 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 670 0x02, 0x02, 671 /* descriptor block 1 goes below */ 672 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 673 /* descriptor block 2, monitor ranges */ 674 0x00, 0x00, 0x00, 0xFD, 0x00, 675 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 676 0x20, 0x20, 677 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */ 678 0x20, 679 /* descriptor block 3, monitor name */ 680 0x00, 0x00, 0x00, 0xFC, 0x00, 681 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', 682 '\n', 683 /* descriptor block 4: dummy data */ 684 0x00, 0x00, 0x00, 0x10, 0x00, 685 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 686 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 687 0x20, 688 0x00, /* number of extensions */ 689 0x00 /* checksum goes here */ 690 }; 691 int clock = (width + 6) * (height + 6) * 60 / 10000; 692 unsigned int i, sum = 0; 693 694 edid[12] = width & 0xff; 695 edid[13] = width >> 8; 696 edid[14] = height & 0xff; 697 edid[15] = height >> 8; 698 edid[54] = clock & 0xff; 699 edid[55] = clock >> 8; 700 edid[56] = width & 0xff; 701 edid[58] = (width >> 4) & 0xf0; 702 edid[59] = height & 0xff; 703 edid[61] = (height >> 4) & 0xf0; 704 for (i = 0; i < EDID_SIZE - 1; ++i) 705 sum += edid[i]; 706 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF; 707 drm_connector_update_edid_property(connector, (struct edid *)edid); 708 } 709 710 static int vbox_get_modes(struct drm_connector *connector) 711 { 712 struct vbox_connector *vbox_connector = NULL; 713 struct drm_display_mode *mode = NULL; 714 struct vbox_private *vbox = NULL; 715 unsigned int num_modes = 0; 716 int preferred_width, preferred_height; 717 718 vbox_connector = to_vbox_connector(connector); 719 vbox = connector->dev->dev_private; 720 721 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) + 722 HOST_FLAGS_OFFSET); 723 if (vbox_connector->vbox_crtc->crtc_id == 0) 724 vbox_report_caps(vbox); 725 726 num_modes = drm_add_modes_noedid(connector, 2560, 1600); 727 preferred_width = vbox_connector->mode_hint.width ? 728 vbox_connector->mode_hint.width : 1024; 729 preferred_height = vbox_connector->mode_hint.height ? 730 vbox_connector->mode_hint.height : 768; 731 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 732 60, false, false, false); 733 if (mode) { 734 mode->type |= DRM_MODE_TYPE_PREFERRED; 735 drm_mode_probed_add(connector, mode); 736 ++num_modes; 737 } 738 vbox_set_edid(connector, preferred_width, preferred_height); 739 740 if (vbox_connector->vbox_crtc->x_hint != -1) 741 drm_object_property_set_value(&connector->base, 742 vbox->ddev.mode_config.suggested_x_property, 743 vbox_connector->vbox_crtc->x_hint); 744 else 745 drm_object_property_set_value(&connector->base, 746 vbox->ddev.mode_config.suggested_x_property, 0); 747 748 if (vbox_connector->vbox_crtc->y_hint != -1) 749 drm_object_property_set_value(&connector->base, 750 vbox->ddev.mode_config.suggested_y_property, 751 vbox_connector->vbox_crtc->y_hint); 752 else 753 drm_object_property_set_value(&connector->base, 754 vbox->ddev.mode_config.suggested_y_property, 0); 755 756 return num_modes; 757 } 758 759 static void vbox_connector_destroy(struct drm_connector *connector) 760 { 761 drm_connector_unregister(connector); 762 drm_connector_cleanup(connector); 763 kfree(connector); 764 } 765 766 static enum drm_connector_status 767 vbox_connector_detect(struct drm_connector *connector, bool force) 768 { 769 struct vbox_connector *vbox_connector; 770 771 vbox_connector = to_vbox_connector(connector); 772 773 return vbox_connector->mode_hint.disconnected ? 774 connector_status_disconnected : connector_status_connected; 775 } 776 777 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x, 778 u32 max_y) 779 { 780 struct vbox_connector *vbox_connector; 781 struct drm_device *dev; 782 struct drm_display_mode *mode, *iterator; 783 784 vbox_connector = to_vbox_connector(connector); 785 dev = vbox_connector->base.dev; 786 list_for_each_entry_safe(mode, iterator, &connector->modes, head) { 787 list_del(&mode->head); 788 drm_mode_destroy(dev, mode); 789 } 790 791 return drm_helper_probe_single_connector_modes(connector, max_x, max_y); 792 } 793 794 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = { 795 .get_modes = vbox_get_modes, 796 }; 797 798 static const struct drm_connector_funcs vbox_connector_funcs = { 799 .detect = vbox_connector_detect, 800 .fill_modes = vbox_fill_modes, 801 .destroy = vbox_connector_destroy, 802 .reset = drm_atomic_helper_connector_reset, 803 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 804 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 805 }; 806 807 static int vbox_connector_init(struct drm_device *dev, 808 struct vbox_crtc *vbox_crtc, 809 struct drm_encoder *encoder) 810 { 811 struct vbox_connector *vbox_connector; 812 struct drm_connector *connector; 813 814 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL); 815 if (!vbox_connector) 816 return -ENOMEM; 817 818 connector = &vbox_connector->base; 819 vbox_connector->vbox_crtc = vbox_crtc; 820 821 drm_connector_init(dev, connector, &vbox_connector_funcs, 822 DRM_MODE_CONNECTOR_VGA); 823 drm_connector_helper_add(connector, &vbox_connector_helper_funcs); 824 825 connector->interlace_allowed = 0; 826 connector->doublescan_allowed = 0; 827 828 drm_mode_create_suggested_offset_properties(dev); 829 drm_object_attach_property(&connector->base, 830 dev->mode_config.suggested_x_property, 0); 831 drm_object_attach_property(&connector->base, 832 dev->mode_config.suggested_y_property, 0); 833 834 drm_connector_attach_encoder(connector, encoder); 835 836 return 0; 837 } 838 839 static const struct drm_mode_config_funcs vbox_mode_funcs = { 840 .fb_create = drm_gem_fb_create_with_dirty, 841 .atomic_check = drm_atomic_helper_check, 842 .atomic_commit = drm_atomic_helper_commit, 843 }; 844 845 int vbox_mode_init(struct vbox_private *vbox) 846 { 847 struct drm_device *dev = &vbox->ddev; 848 struct drm_encoder *encoder; 849 struct vbox_crtc *vbox_crtc; 850 unsigned int i; 851 int ret; 852 853 drm_mode_config_init(dev); 854 855 dev->mode_config.funcs = (void *)&vbox_mode_funcs; 856 dev->mode_config.min_width = 0; 857 dev->mode_config.min_height = 0; 858 dev->mode_config.preferred_depth = 24; 859 dev->mode_config.max_width = VBE_DISPI_MAX_XRES; 860 dev->mode_config.max_height = VBE_DISPI_MAX_YRES; 861 862 for (i = 0; i < vbox->num_crtcs; ++i) { 863 vbox_crtc = vbox_crtc_init(dev, i); 864 if (IS_ERR(vbox_crtc)) { 865 ret = PTR_ERR(vbox_crtc); 866 goto err_drm_mode_cleanup; 867 } 868 encoder = vbox_encoder_init(dev, i); 869 if (!encoder) { 870 ret = -ENOMEM; 871 goto err_drm_mode_cleanup; 872 } 873 ret = vbox_connector_init(dev, vbox_crtc, encoder); 874 if (ret) 875 goto err_drm_mode_cleanup; 876 } 877 878 drm_mode_config_reset(dev); 879 return 0; 880 881 err_drm_mode_cleanup: 882 drm_mode_config_cleanup(dev); 883 return ret; 884 } 885 886 void vbox_mode_fini(struct vbox_private *vbox) 887 { 888 drm_mode_config_cleanup(&vbox->ddev); 889 } 890