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