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