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