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_blend.h> 19 #include <drm/drm_edid.h> 20 #include <drm/drm_fb_helper.h> 21 #include <drm/drm_fourcc.h> 22 #include <drm/drm_framebuffer.h> 23 #include <drm/drm_gem_atomic_helper.h> 24 #include <drm/drm_gem_framebuffer_helper.h> 25 #include <drm/drm_plane_helper.h> 26 #include <drm/drm_print.h> 27 #include <drm/drm_probe_helper.h> 28 29 #include "hgsmi_channels.h" 30 #include "vbox_drv.h" 31 #include "vboxvideo.h" 32 33 /* 34 * Set a graphics mode. Poke any required values into registers, do an HGSMI 35 * mode set and tell the host we support advanced graphics functions. 36 */ 37 static void vbox_do_modeset(struct drm_crtc *crtc) 38 { 39 struct drm_framebuffer *fb = crtc->primary->state->fb; 40 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 41 struct vbox_private *vbox; 42 int width, height, bpp, pitch; 43 u16 flags; 44 s32 x_offset, y_offset; 45 46 vbox = to_vbox_dev(crtc->dev); 47 width = vbox_crtc->width ? vbox_crtc->width : 640; 48 height = vbox_crtc->height ? vbox_crtc->height : 480; 49 bpp = fb ? fb->format->cpp[0] * 8 : 32; 50 pitch = fb ? fb->pitches[0] : width * bpp / 8; 51 x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint; 52 y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint; 53 54 /* 55 * This is the old way of setting graphics modes. It assumed one screen 56 * and a frame-buffer at the start of video RAM. On older versions of 57 * VirtualBox, certain parts of the code still assume that the first 58 * screen is programmed this way, so try to fake it. 59 */ 60 if (vbox_crtc->crtc_id == 0 && fb && 61 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y && 62 vbox_crtc->fb_offset % (bpp / 8) == 0) { 63 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width); 64 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height); 65 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp); 66 vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp); 67 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED); 68 vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET, 69 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x); 70 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET, 71 vbox_crtc->fb_offset / pitch + vbox_crtc->y); 72 } 73 74 flags = VBVA_SCREEN_F_ACTIVE; 75 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK; 76 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0; 77 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id, 78 x_offset, y_offset, 79 vbox_crtc->x * bpp / 8 + 80 vbox_crtc->y * pitch, 81 pitch, width, height, bpp, flags); 82 } 83 84 static int vbox_set_view(struct drm_crtc *crtc) 85 { 86 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 87 struct vbox_private *vbox = to_vbox_dev(crtc->dev); 88 struct vbva_infoview *p; 89 90 /* 91 * Tell the host about the view. This design originally targeted the 92 * Windows XP driver architecture and assumed that each screen would 93 * have a dedicated frame buffer with the command buffer following it, 94 * the whole being a "view". The host works out which screen a command 95 * buffer belongs to by checking whether it is in the first view, then 96 * whether it is in the second and so on. The first match wins. We 97 * cheat around this by making the first view be the managed memory 98 * plus the first command buffer, the second the same plus the second 99 * buffer and so on. 100 */ 101 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p), 102 HGSMI_CH_VBVA, VBVA_INFO_VIEW); 103 if (!p) 104 return -ENOMEM; 105 106 p->view_index = vbox_crtc->crtc_id; 107 p->view_offset = vbox_crtc->fb_offset; 108 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset + 109 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE; 110 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset; 111 112 hgsmi_buffer_submit(vbox->guest_pool, p); 113 hgsmi_buffer_free(vbox->guest_pool, p); 114 115 return 0; 116 } 117 118 /* 119 * Try to map the layout of virtual screens to the range of the input device. 120 * Return true if we need to re-set the crtc modes due to screen offset 121 * changes. 122 */ 123 static bool vbox_set_up_input_mapping(struct vbox_private *vbox) 124 { 125 struct drm_crtc *crtci; 126 struct drm_connector *connectori; 127 struct drm_framebuffer *fb, *fb1 = NULL; 128 bool single_framebuffer = true; 129 bool old_single_framebuffer = vbox->single_framebuffer; 130 u16 width = 0, height = 0; 131 132 /* 133 * Are we using an X.Org-style single large frame-buffer for all crtcs? 134 * If so then screen layout can be deduced from the crtc offsets. 135 * Same fall-back if this is the fbdev frame-buffer. 136 */ 137 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 138 fb = crtci->primary->state->fb; 139 if (!fb) 140 continue; 141 142 if (!fb1) { 143 fb1 = fb; 144 if (fb1 == vbox->ddev.fb_helper->fb) 145 break; 146 } else if (fb != fb1) { 147 single_framebuffer = false; 148 } 149 } 150 if (!fb1) 151 return false; 152 153 if (single_framebuffer) { 154 vbox->single_framebuffer = true; 155 vbox->input_mapping_width = fb1->width; 156 vbox->input_mapping_height = fb1->height; 157 return old_single_framebuffer != vbox->single_framebuffer; 158 } 159 /* Otherwise calculate the total span of all screens. */ 160 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list, 161 head) { 162 struct vbox_connector *vbox_connector = 163 to_vbox_connector(connectori); 164 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc; 165 166 width = max_t(u16, width, vbox_crtc->x_hint + 167 vbox_connector->mode_hint.width); 168 height = max_t(u16, height, vbox_crtc->y_hint + 169 vbox_connector->mode_hint.height); 170 } 171 172 vbox->single_framebuffer = false; 173 vbox->input_mapping_width = width; 174 vbox->input_mapping_height = height; 175 176 return old_single_framebuffer != vbox->single_framebuffer; 177 } 178 179 static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc, 180 struct drm_framebuffer *fb, 181 int x, int y) 182 { 183 struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]); 184 struct vbox_private *vbox = to_vbox_dev(crtc->dev); 185 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); 186 bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state); 187 188 mutex_lock(&vbox->hw_mutex); 189 190 if (crtc->state->enable) { 191 vbox_crtc->width = crtc->state->mode.hdisplay; 192 vbox_crtc->height = crtc->state->mode.vdisplay; 193 } 194 195 vbox_crtc->x = x; 196 vbox_crtc->y = y; 197 vbox_crtc->fb_offset = drm_gem_vram_offset(gbo); 198 199 /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */ 200 if (needs_modeset && vbox_set_up_input_mapping(vbox)) { 201 struct drm_crtc *crtci; 202 203 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, 204 head) { 205 if (crtci == crtc) 206 continue; 207 vbox_do_modeset(crtci); 208 } 209 } 210 211 vbox_set_view(crtc); 212 vbox_do_modeset(crtc); 213 214 if (needs_modeset) 215 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0, 216 vbox->input_mapping_width, 217 vbox->input_mapping_height); 218 219 mutex_unlock(&vbox->hw_mutex); 220 } 221 222 static void vbox_crtc_atomic_enable(struct drm_crtc *crtc, 223 struct drm_atomic_commit *state) 224 { 225 } 226 227 static void vbox_crtc_atomic_disable(struct drm_crtc *crtc, 228 struct drm_atomic_commit *state) 229 { 230 } 231 232 static void vbox_crtc_atomic_flush(struct drm_crtc *crtc, 233 struct drm_atomic_commit *state) 234 { 235 } 236 237 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = { 238 .atomic_enable = vbox_crtc_atomic_enable, 239 .atomic_disable = vbox_crtc_atomic_disable, 240 .atomic_flush = vbox_crtc_atomic_flush, 241 }; 242 243 static void vbox_crtc_destroy(struct drm_crtc *crtc) 244 { 245 drm_crtc_cleanup(crtc); 246 kfree(crtc); 247 } 248 249 static const struct drm_crtc_funcs vbox_crtc_funcs = { 250 .set_config = drm_atomic_helper_set_config, 251 .page_flip = drm_atomic_helper_page_flip, 252 /* .gamma_set = vbox_crtc_gamma_set, */ 253 .destroy = vbox_crtc_destroy, 254 .reset = drm_atomic_helper_crtc_reset, 255 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, 256 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, 257 }; 258 259 static int vbox_primary_atomic_check(struct drm_plane *plane, 260 struct drm_atomic_commit *state) 261 { 262 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 263 plane); 264 struct drm_crtc_state *crtc_state = NULL; 265 266 if (new_state->crtc) { 267 crtc_state = drm_atomic_get_new_crtc_state(state, 268 new_state->crtc); 269 if (WARN_ON(!crtc_state)) 270 return -EINVAL; 271 } 272 273 return drm_atomic_helper_check_plane_state(new_state, crtc_state, 274 DRM_PLANE_NO_SCALING, 275 DRM_PLANE_NO_SCALING, 276 false, true); 277 } 278 279 static void vbox_primary_atomic_update(struct drm_plane *plane, 280 struct drm_atomic_commit *state) 281 { 282 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 283 plane); 284 struct drm_crtc *crtc = new_state->crtc; 285 struct drm_framebuffer *fb = new_state->fb; 286 struct vbox_private *vbox = to_vbox_dev(fb->dev); 287 struct drm_mode_rect *clips; 288 uint32_t num_clips, i; 289 290 vbox_crtc_set_base_and_mode(crtc, fb, 291 new_state->src_x >> 16, 292 new_state->src_y >> 16); 293 294 /* Send information about dirty rectangles to VBVA. */ 295 296 clips = drm_plane_get_damage_clips(new_state); 297 num_clips = drm_plane_get_damage_clips_count(new_state); 298 299 if (!num_clips) 300 return; 301 302 mutex_lock(&vbox->hw_mutex); 303 304 for (i = 0; i < num_clips; ++i, ++clips) { 305 struct vbva_cmd_hdr cmd_hdr; 306 unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id; 307 308 cmd_hdr.x = (s16)clips->x1; 309 cmd_hdr.y = (s16)clips->y1; 310 cmd_hdr.w = (u16)clips->x2 - clips->x1; 311 cmd_hdr.h = (u16)clips->y2 - clips->y1; 312 313 if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id], 314 vbox->guest_pool)) 315 continue; 316 317 vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool, 318 &cmd_hdr, sizeof(cmd_hdr)); 319 vbva_buffer_end_update(&vbox->vbva_info[crtc_id]); 320 } 321 322 mutex_unlock(&vbox->hw_mutex); 323 } 324 325 static void vbox_primary_atomic_disable(struct drm_plane *plane, 326 struct drm_atomic_commit *state) 327 { 328 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 329 plane); 330 struct drm_crtc *crtc = old_state->crtc; 331 332 /* vbox_do_modeset checks plane->state->fb and will disable if NULL */ 333 vbox_crtc_set_base_and_mode(crtc, old_state->fb, 334 old_state->src_x >> 16, 335 old_state->src_y >> 16); 336 } 337 338 static int vbox_cursor_atomic_check(struct drm_plane *plane, 339 struct drm_atomic_commit *state) 340 { 341 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 342 plane); 343 struct drm_crtc_state *crtc_state = NULL; 344 u32 width = new_state->crtc_w; 345 u32 height = new_state->crtc_h; 346 int ret; 347 348 if (new_state->crtc) { 349 crtc_state = drm_atomic_get_new_crtc_state(state, 350 new_state->crtc); 351 if (WARN_ON(!crtc_state)) 352 return -EINVAL; 353 } 354 355 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state, 356 DRM_PLANE_NO_SCALING, 357 DRM_PLANE_NO_SCALING, 358 true, true); 359 if (ret) 360 return ret; 361 362 if (!new_state->fb) 363 return 0; 364 365 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT || 366 width == 0 || height == 0) 367 return -EINVAL; 368 369 return 0; 370 } 371 372 /* 373 * Copy the ARGB image and generate the mask, which is needed in case the host 374 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set 375 * if the corresponding alpha value in the ARGB image is greater than 0xF0. 376 */ 377 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height, 378 size_t mask_size) 379 { 380 size_t line_size = (width + 7) / 8; 381 u32 i, j; 382 383 memcpy(dst + mask_size, src, width * height * 4); 384 for (i = 0; i < height; ++i) 385 for (j = 0; j < width; ++j) 386 if (((u32 *)src)[i * width + j] > 0xf0000000) 387 dst[i * line_size + j / 8] |= (0x80 >> (j % 8)); 388 } 389 390 static void vbox_cursor_atomic_update(struct drm_plane *plane, 391 struct drm_atomic_commit *state) 392 { 393 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 394 plane); 395 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 396 plane); 397 struct vbox_private *vbox = 398 container_of(plane->dev, struct vbox_private, ddev); 399 struct vbox_crtc *vbox_crtc = to_vbox_crtc(new_state->crtc); 400 struct drm_framebuffer *fb = new_state->fb; 401 u32 width = new_state->crtc_w; 402 u32 height = new_state->crtc_h; 403 struct drm_shadow_plane_state *shadow_plane_state = 404 to_drm_shadow_plane_state(new_state); 405 struct iosys_map map = shadow_plane_state->data[0]; 406 u8 *src = map.vaddr; /* TODO: Use mapping abstraction properly */ 407 size_t data_size, mask_size; 408 u32 flags; 409 410 /* 411 * VirtualBox uses the host windowing system to draw the cursor so 412 * moves are a no-op, we only need to upload new cursor sprites. 413 */ 414 if (fb == old_state->fb) 415 return; 416 417 mutex_lock(&vbox->hw_mutex); 418 419 vbox_crtc->cursor_enabled = true; 420 421 /* 422 * The mask must be calculated based on the alpha 423 * channel, one bit per ARGB word, and must be 32-bit 424 * padded. 425 */ 426 mask_size = ((width + 7) / 8 * height + 3) & ~3; 427 data_size = width * height * 4 + mask_size; 428 429 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size); 430 431 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE | 432 VBOX_MOUSE_POINTER_ALPHA; 433 hgsmi_update_pointer_shape(vbox->guest_pool, flags, 434 min_t(u32, max(new_state->hotspot_x, 0), width), 435 min_t(u32, max(new_state->hotspot_y, 0), height), 436 width, height, vbox->cursor_data, data_size); 437 438 mutex_unlock(&vbox->hw_mutex); 439 } 440 441 static void vbox_cursor_atomic_disable(struct drm_plane *plane, 442 struct drm_atomic_commit *state) 443 { 444 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 445 plane); 446 struct vbox_private *vbox = 447 container_of(plane->dev, struct vbox_private, ddev); 448 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc); 449 bool cursor_enabled = false; 450 struct drm_crtc *crtci; 451 452 mutex_lock(&vbox->hw_mutex); 453 454 vbox_crtc->cursor_enabled = false; 455 456 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { 457 if (to_vbox_crtc(crtci)->cursor_enabled) 458 cursor_enabled = true; 459 } 460 461 if (!cursor_enabled) 462 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0, 463 0, 0, NULL, 0); 464 465 mutex_unlock(&vbox->hw_mutex); 466 } 467 468 static const u32 vbox_cursor_plane_formats[] = { 469 DRM_FORMAT_ARGB8888, 470 }; 471 472 static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = { 473 .atomic_check = vbox_cursor_atomic_check, 474 .atomic_update = vbox_cursor_atomic_update, 475 .atomic_disable = vbox_cursor_atomic_disable, 476 DRM_GEM_SHADOW_PLANE_HELPER_FUNCS, 477 }; 478 479 static const struct drm_plane_funcs vbox_cursor_plane_funcs = { 480 .update_plane = drm_atomic_helper_update_plane, 481 .disable_plane = drm_atomic_helper_disable_plane, 482 .destroy = drm_plane_helper_destroy, 483 DRM_GEM_SHADOW_PLANE_FUNCS, 484 }; 485 486 static const u32 vbox_primary_plane_formats[] = { 487 DRM_FORMAT_XRGB8888, 488 DRM_FORMAT_ARGB8888, 489 }; 490 491 static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = { 492 .atomic_check = vbox_primary_atomic_check, 493 .atomic_update = vbox_primary_atomic_update, 494 .atomic_disable = vbox_primary_atomic_disable, 495 DRM_GEM_VRAM_PLANE_HELPER_FUNCS, 496 }; 497 498 static const struct drm_plane_funcs vbox_primary_plane_funcs = { 499 .update_plane = drm_atomic_helper_update_plane, 500 .disable_plane = drm_atomic_helper_disable_plane, 501 .destroy = drm_plane_helper_destroy, 502 .reset = drm_atomic_helper_plane_reset, 503 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 504 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 505 }; 506 507 static struct drm_plane *vbox_create_plane(struct vbox_private *vbox, 508 unsigned int possible_crtcs, 509 enum drm_plane_type type) 510 { 511 const struct drm_plane_helper_funcs *helper_funcs = NULL; 512 const struct drm_plane_funcs *funcs; 513 struct drm_plane *plane; 514 const u32 *formats; 515 int num_formats; 516 int err; 517 518 if (type == DRM_PLANE_TYPE_PRIMARY) { 519 funcs = &vbox_primary_plane_funcs; 520 formats = vbox_primary_plane_formats; 521 helper_funcs = &vbox_primary_helper_funcs; 522 num_formats = ARRAY_SIZE(vbox_primary_plane_formats); 523 } else if (type == DRM_PLANE_TYPE_CURSOR) { 524 funcs = &vbox_cursor_plane_funcs; 525 formats = vbox_cursor_plane_formats; 526 helper_funcs = &vbox_cursor_helper_funcs; 527 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats); 528 } else { 529 return ERR_PTR(-EINVAL); 530 } 531 532 plane = kzalloc_obj(*plane); 533 if (!plane) 534 return ERR_PTR(-ENOMEM); 535 536 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs, 537 funcs, formats, num_formats, 538 NULL, type, NULL); 539 if (err) 540 goto free_plane; 541 542 drm_plane_helper_add(plane, helper_funcs); 543 544 drm_plane_create_blend_mode_property(plane, 545 BIT(DRM_MODE_BLEND_COVERAGE)); 546 547 return plane; 548 549 free_plane: 550 kfree(plane); 551 return ERR_PTR(-EINVAL); 552 } 553 554 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i) 555 { 556 struct vbox_private *vbox = 557 container_of(dev, struct vbox_private, ddev); 558 struct drm_plane *cursor = NULL; 559 struct vbox_crtc *vbox_crtc; 560 struct drm_plane *primary; 561 u32 caps = 0; 562 int ret; 563 564 ret = hgsmi_query_conf(vbox->guest_pool, 565 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps); 566 if (ret) 567 return ERR_PTR(ret); 568 569 vbox_crtc = kzalloc_obj(*vbox_crtc); 570 if (!vbox_crtc) 571 return ERR_PTR(-ENOMEM); 572 573 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY); 574 if (IS_ERR(primary)) { 575 ret = PTR_ERR(primary); 576 goto free_mem; 577 } 578 579 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) { 580 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR); 581 if (IS_ERR(cursor)) { 582 ret = PTR_ERR(cursor); 583 goto clean_primary; 584 } 585 } else { 586 DRM_WARN("VirtualBox host is too old, no cursor support\n"); 587 } 588 589 vbox_crtc->crtc_id = i; 590 591 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor, 592 &vbox_crtc_funcs, NULL); 593 if (ret) 594 goto clean_cursor; 595 596 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256); 597 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs); 598 599 return vbox_crtc; 600 601 clean_cursor: 602 if (cursor) { 603 drm_plane_cleanup(cursor); 604 kfree(cursor); 605 } 606 clean_primary: 607 drm_plane_cleanup(primary); 608 kfree(primary); 609 free_mem: 610 kfree(vbox_crtc); 611 return ERR_PTR(ret); 612 } 613 614 static void vbox_encoder_destroy(struct drm_encoder *encoder) 615 { 616 drm_encoder_cleanup(encoder); 617 kfree(encoder); 618 } 619 620 static const struct drm_encoder_funcs vbox_enc_funcs = { 621 .destroy = vbox_encoder_destroy, 622 }; 623 624 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev, 625 unsigned int i) 626 { 627 struct vbox_encoder *vbox_encoder; 628 629 vbox_encoder = kzalloc_obj(*vbox_encoder); 630 if (!vbox_encoder) 631 return NULL; 632 633 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs, 634 DRM_MODE_ENCODER_DAC, NULL); 635 636 vbox_encoder->base.possible_crtcs = 1 << i; 637 return &vbox_encoder->base; 638 } 639 640 /* 641 * Generate EDID data with a mode-unique serial number for the virtual 642 * monitor to try to persuade Unity that different modes correspond to 643 * different monitors and it should not try to force the same resolution on 644 * them. 645 */ 646 static void vbox_set_edid(struct drm_connector *connector, int width, 647 int height) 648 { 649 enum { EDID_SIZE = 128 }; 650 unsigned char edid[EDID_SIZE] = { 651 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */ 652 0x58, 0x58, /* manufacturer (VBX) */ 653 0x00, 0x00, /* product code */ 654 0x00, 0x00, 0x00, 0x00, /* serial number goes here */ 655 0x01, /* week of manufacture */ 656 0x00, /* year of manufacture */ 657 0x01, 0x03, /* EDID version */ 658 0x80, /* capabilities - digital */ 659 0x00, /* horiz. res in cm, zero for projectors */ 660 0x00, /* vert. res in cm */ 661 0x78, /* display gamma (120 == 2.2). */ 662 0xEE, /* features (standby, suspend, off, RGB, std */ 663 /* colour space, preferred timing mode) */ 664 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54, 665 /* chromaticity for standard colour space. */ 666 0x00, 0x00, 0x00, /* no default timings */ 667 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 668 0x01, 0x01, 669 0x01, 0x01, 0x01, 0x01, /* no standard timings */ 670 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 671 0x02, 0x02, 672 /* descriptor block 1 goes below */ 673 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 674 /* descriptor block 2, monitor ranges */ 675 0x00, 0x00, 0x00, 0xFD, 0x00, 676 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 677 0x20, 0x20, 678 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */ 679 0x20, 680 /* descriptor block 3, monitor name */ 681 0x00, 0x00, 0x00, 0xFC, 0x00, 682 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', 683 '\n', 684 /* descriptor block 4: dummy data */ 685 0x00, 0x00, 0x00, 0x10, 0x00, 686 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 687 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 688 0x20, 689 0x00, /* number of extensions */ 690 0x00 /* checksum goes here */ 691 }; 692 int clock = (width + 6) * (height + 6) * 60 / 10000; 693 unsigned int i, sum = 0; 694 695 edid[12] = width & 0xff; 696 edid[13] = width >> 8; 697 edid[14] = height & 0xff; 698 edid[15] = height >> 8; 699 edid[54] = clock & 0xff; 700 edid[55] = clock >> 8; 701 edid[56] = width & 0xff; 702 edid[58] = (width >> 4) & 0xf0; 703 edid[59] = height & 0xff; 704 edid[61] = (height >> 4) & 0xf0; 705 for (i = 0; i < EDID_SIZE - 1; ++i) 706 sum += edid[i]; 707 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF; 708 drm_connector_update_edid_property(connector, (struct edid *)edid); 709 } 710 711 static int vbox_get_modes(struct drm_connector *connector) 712 { 713 struct vbox_connector *vbox_connector = NULL; 714 struct drm_display_mode *mode = NULL; 715 struct vbox_private *vbox = NULL; 716 unsigned int num_modes = 0; 717 int preferred_width, preferred_height; 718 719 vbox_connector = to_vbox_connector(connector); 720 vbox = to_vbox_dev(connector->dev); 721 722 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) + 723 HOST_FLAGS_OFFSET); 724 if (vbox_connector->vbox_crtc->crtc_id == 0) 725 vbox_report_caps(vbox); 726 727 num_modes = drm_add_modes_noedid(connector, 2560, 1600); 728 preferred_width = vbox_connector->mode_hint.width ? 729 vbox_connector->mode_hint.width : 1024; 730 preferred_height = vbox_connector->mode_hint.height ? 731 vbox_connector->mode_hint.height : 768; 732 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 733 60, false, false, false); 734 if (mode) { 735 mode->type |= DRM_MODE_TYPE_PREFERRED; 736 drm_mode_probed_add(connector, mode); 737 ++num_modes; 738 } 739 vbox_set_edid(connector, preferred_width, preferred_height); 740 741 if (vbox_connector->vbox_crtc->x_hint != -1) 742 drm_object_property_set_value(&connector->base, 743 vbox->ddev.mode_config.suggested_x_property, 744 vbox_connector->vbox_crtc->x_hint); 745 else 746 drm_object_property_set_value(&connector->base, 747 vbox->ddev.mode_config.suggested_x_property, 0); 748 749 if (vbox_connector->vbox_crtc->y_hint != -1) 750 drm_object_property_set_value(&connector->base, 751 vbox->ddev.mode_config.suggested_y_property, 752 vbox_connector->vbox_crtc->y_hint); 753 else 754 drm_object_property_set_value(&connector->base, 755 vbox->ddev.mode_config.suggested_y_property, 0); 756 757 return num_modes; 758 } 759 760 static void vbox_connector_destroy(struct drm_connector *connector) 761 { 762 drm_connector_unregister(connector); 763 drm_connector_cleanup(connector); 764 kfree(connector); 765 } 766 767 static enum drm_connector_status 768 vbox_connector_detect(struct drm_connector *connector, bool force) 769 { 770 struct vbox_connector *vbox_connector; 771 772 vbox_connector = to_vbox_connector(connector); 773 774 return vbox_connector->mode_hint.disconnected ? 775 connector_status_disconnected : connector_status_connected; 776 } 777 778 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x, 779 u32 max_y) 780 { 781 struct vbox_connector *vbox_connector; 782 struct drm_device *dev; 783 struct drm_display_mode *mode, *iterator; 784 785 vbox_connector = to_vbox_connector(connector); 786 dev = vbox_connector->base.dev; 787 list_for_each_entry_safe(mode, iterator, &connector->modes, head) { 788 list_del(&mode->head); 789 drm_mode_destroy(dev, mode); 790 } 791 792 return drm_helper_probe_single_connector_modes(connector, max_x, max_y); 793 } 794 795 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = { 796 .get_modes = vbox_get_modes, 797 }; 798 799 static const struct drm_connector_funcs vbox_connector_funcs = { 800 .detect = vbox_connector_detect, 801 .fill_modes = vbox_fill_modes, 802 .destroy = vbox_connector_destroy, 803 .reset = drm_atomic_helper_connector_reset, 804 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 805 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 806 }; 807 808 static int vbox_connector_init(struct drm_device *dev, 809 struct vbox_crtc *vbox_crtc, 810 struct drm_encoder *encoder) 811 { 812 struct vbox_connector *vbox_connector; 813 struct drm_connector *connector; 814 815 vbox_connector = kzalloc_obj(*vbox_connector); 816 if (!vbox_connector) 817 return -ENOMEM; 818 819 connector = &vbox_connector->base; 820 vbox_connector->vbox_crtc = vbox_crtc; 821 822 drm_connector_init(dev, connector, &vbox_connector_funcs, 823 DRM_MODE_CONNECTOR_VGA); 824 drm_connector_helper_add(connector, &vbox_connector_helper_funcs); 825 826 connector->interlace_allowed = 0; 827 connector->doublescan_allowed = 0; 828 829 drm_mode_create_suggested_offset_properties(dev); 830 drm_object_attach_property(&connector->base, 831 dev->mode_config.suggested_x_property, 0); 832 drm_object_attach_property(&connector->base, 833 dev->mode_config.suggested_y_property, 0); 834 835 drm_connector_attach_encoder(connector, encoder); 836 837 return 0; 838 } 839 840 static const struct drm_mode_config_funcs vbox_mode_funcs = { 841 .fb_create = drm_gem_fb_create_with_dirty, 842 .mode_valid = drm_vram_helper_mode_valid, 843 .atomic_check = drm_atomic_helper_check, 844 .atomic_commit = drm_atomic_helper_commit, 845 }; 846 847 int vbox_mode_init(struct vbox_private *vbox) 848 { 849 struct drm_device *dev = &vbox->ddev; 850 struct drm_encoder *encoder; 851 struct vbox_crtc *vbox_crtc; 852 unsigned int i; 853 int ret; 854 855 drm_mode_config_init(dev); 856 857 dev->mode_config.funcs = (void *)&vbox_mode_funcs; 858 dev->mode_config.min_width = 0; 859 dev->mode_config.min_height = 0; 860 dev->mode_config.preferred_depth = 24; 861 dev->mode_config.max_width = VBE_DISPI_MAX_XRES; 862 dev->mode_config.max_height = VBE_DISPI_MAX_YRES; 863 864 for (i = 0; i < vbox->num_crtcs; ++i) { 865 vbox_crtc = vbox_crtc_init(dev, i); 866 if (IS_ERR(vbox_crtc)) { 867 ret = PTR_ERR(vbox_crtc); 868 goto err_drm_mode_cleanup; 869 } 870 encoder = vbox_encoder_init(dev, i); 871 if (!encoder) { 872 ret = -ENOMEM; 873 goto err_drm_mode_cleanup; 874 } 875 ret = vbox_connector_init(dev, vbox_crtc, encoder); 876 if (ret) 877 goto err_drm_mode_cleanup; 878 } 879 880 drm_mode_config_reset(dev); 881 return 0; 882 883 err_drm_mode_cleanup: 884 drm_mode_config_cleanup(dev); 885 return ret; 886 } 887 888 void vbox_mode_fini(struct vbox_private *vbox) 889 { 890 drm_mode_config_cleanup(&vbox->ddev); 891 } 892