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