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