ubuntu/vbox/vboxvideo/vbox_mode.c

   1 /* $Id: vbox_mode.c $ */
   2 /** @file
   3  * VirtualBox Additions Linux kernel video driver
   4  */
   5
   6 /*
   7  * Copyright (C) 2013-2016 Oracle Corporation
   8  *
   9  * This file is part of VirtualBox Open Source Edition (OSE), as
  10  * available from http://www.virtualbox.org. This file is free software;
  11  * you can redistribute it and/or modify it under the terms of the GNU
  12  * General Public License (GPL) as published by the Free Software
  13  * Foundation, in version 2 as it comes in the "COPYING" file of the
  14  * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
  15  * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
  16  * --------------------------------------------------------------------
  17  *
  18  * This code is based on
  19  * ast_mode.c
  20  * with the following copyright and permission notice:
  21  *
  22  * Copyright 2012 Red Hat Inc.
  23  * Parts based on xf86-video-ast
  24  * Copyright (c) 2005 ASPEED Technology Inc.
  25  *
  26  * Permission is hereby granted, free of charge, to any person obtaining a
  27  * copy of this software and associated documentation files (the
  28  * "Software"), to deal in the Software without restriction, including
  29  * without limitation the rights to use, copy, modify, merge, publish,
  30  * distribute, sub license, and/or sell copies of the Software, and to
  31  * permit persons to whom the Software is furnished to do so, subject to
  32  * the following conditions:
  33  *
  34  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  35  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  36  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  37  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  38  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  39  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  40  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  41  *
  42  * The above copyright notice and this permission notice (including the
  43  * next paragraph) shall be included in all copies or substantial portions
  44  * of the Software.
  45  *
  46  */
  47 /*
  48  * Authors: Dave Airlie <airlied@redhat.com>
  49  */
  50 #include "vbox_drv.h"
  51
  52 #include <VBox/VBoxVideo.h>
  53
  54 #include <linux/export.h>
  55 #include <drm/drm_crtc_helper.h>
  56 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)
  57 # include <drm/drm_plane_helper.h>
  58 #endif
  59
  60 static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
  61                             uint32_t handle, uint32_t width, uint32_t height,
  62                             int32_t hot_x, int32_t hot_y);
  63 static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
  64
  65 /** Set a graphics mode.  Poke any required values into registers, do an HGSMI
  66  * mode set and tell the host we support advanced graphics functions.
  67  */
  68 static void vbox_do_modeset(struct drm_crtc *crtc,
  69                             const struct drm_display_mode *mode)
  70 {
  71     struct vbox_crtc   *vbox_crtc = to_vbox_crtc(crtc);
  72     struct vbox_private *vbox;
  73     int width, height, bpp, pitch;
  74     unsigned crtc_id;
  75     uint16_t flags;
  76
  77     LogFunc(("vboxvideo: %d: vbox_crtc=%p, CRTC_FB(crtc)=%p\n", __LINE__,
  78              vbox_crtc, CRTC_FB(crtc)));
  79     vbox = crtc->dev->dev_private;
  80     width = mode->hdisplay ? mode->hdisplay : 640;
  81     height = mode->vdisplay ? mode->vdisplay : 480;
  82     crtc_id = vbox_crtc->crtc_id;
  83     bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
  84 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
  85     pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
  86 #else
  87     pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
  88 #endif
  89     /* This is the old way of setting graphics modes.  It assumed one screen
  90      * and a frame-buffer at the start of video RAM.  On older versions of
  91      * VirtualBox, certain parts of the code still assume that the first
  92      * screen is programmed this way, so try to fake it. */
  93     if (   vbox_crtc->crtc_id == 0
  94         && crtc->enabled
  95         && vbox_crtc->fb_offset / pitch < 0xffff - crtc->y
  96         && vbox_crtc->fb_offset % (bpp / 8) == 0)
  97         VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
  98                           CRTC_FB(crtc)->bits_per_pixel, 0,
  99                           vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
 100                           vbox_crtc->fb_offset / pitch + crtc->y);
 101     flags = VBVA_SCREEN_F_ACTIVE;
 102     flags |= (crtc->enabled && !vbox_crtc->blanked ? 0 : VBVA_SCREEN_F_BLANK);
 103     flags |= (vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0);
 104     VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
 105                                 crtc->x, crtc->y,
 106                                 crtc->x * bpp / 8 + crtc->y * pitch,
 107                                 pitch, width, height,
 108                                 vbox_crtc->blanked ? 0 : bpp, flags);
 109     VBoxHGSMIReportFlagsLocation(&vbox->submit_info,   vbox->vram_map_start
 110                                                      + vbox->host_flags_offset);
 111     LogFunc(("vboxvideo: %d\n", __LINE__));
 112 }
 113
 114 static int vbox_set_view(struct drm_crtc *crtc)
 115 {
 116     struct vbox_crtc   *vbox_crtc = to_vbox_crtc(crtc);
 117     struct vbox_private *vbox = crtc->dev->dev_private;
 118     void *p;
 119
 120     LogFunc(("vboxvideo: %d: vbox_crtc=%p\n", __LINE__, vbox_crtc));
 121     /* Tell the host about the view.  This design originally targeted the
 122      * Windows XP driver architecture and assumed that each screen would have
 123      * a dedicated frame buffer with the command buffer following it, the whole
 124      * being a "view".  The host works out which screen a command buffer belongs
 125      * to by checking whether it is in the first view, then whether it is in the
 126      * second and so on.  The first match wins.  We cheat around this by making
 127      * the first view be the managed memory plus the first command buffer, the
 128      * second the same plus the second buffer and so on. */
 129     p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
 130                              VBVA_INFO_VIEW);
 131     if (p)
 132     {
 133         VBVAINFOVIEW *pInfo = (VBVAINFOVIEW *)p;
 134         pInfo->u32ViewIndex = vbox_crtc->crtc_id;
 135         pInfo->u32ViewOffset = vbox_crtc->fb_offset;
 136         pInfo->u32ViewSize =   vbox->available_vram_size - vbox_crtc->fb_offset
 137                              + vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
 138         pInfo->u32MaxScreenSize = vbox->available_vram_size - vbox_crtc->fb_offset;
 139         VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
 140         VBoxHGSMIBufferFree(&vbox->submit_info, p);
 141     }
 142     else
 143         return -ENOMEM;
 144     LogFunc(("vboxvideo: %d: p=%p\n", __LINE__, p));
 145     return 0;
 146 }
 147
 148 static void vbox_crtc_load_lut(struct drm_crtc *crtc)
 149 {
 150
 151 }
 152
 153 static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
 154 {
 155     struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
 156     struct vbox_private *vbox = crtc->dev->dev_private;
 157
 158     LogFunc(("vboxvideo: %d: vbox_crtc=%p, mode=%d\n", __LINE__, vbox_crtc,
 159              mode));
 160     switch (mode) {
 161     case DRM_MODE_DPMS_ON:
 162         vbox_crtc->blanked = false;
 163         break;
 164     case DRM_MODE_DPMS_STANDBY:
 165     case DRM_MODE_DPMS_SUSPEND:
 166     case DRM_MODE_DPMS_OFF:
 167         vbox_crtc->blanked = true;
 168         break;
 169     }
 170     mutex_lock(&vbox->hw_mutex);
 171     vbox_do_modeset(crtc, &crtc->hwmode);
 172     mutex_unlock(&vbox->hw_mutex);
 173     LogFunc(("vboxvideo: %d\n", __LINE__));
 174 }
 175
 176 static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
 177                 const struct drm_display_mode *mode,
 178                 struct drm_display_mode *adjusted_mode)
 179 {
 180     return true;
 181 }
 182
 183 /* We move buffers which are not in active use out of VRAM to save memory. */
 184 static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
 185                 struct drm_framebuffer *fb,
 186                 int x, int y, int atomic)
 187 {
 188     struct vbox_private *vbox = crtc->dev->dev_private;
 189     struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
 190     struct drm_gem_object *obj;
 191     struct vbox_framebuffer *vbox_fb;
 192     struct vbox_bo *bo;
 193     int ret;
 194     u64 gpu_addr;
 195
 196     LogFunc(("vboxvideo: %d: fb=%p, vbox_crtc=%p\n", __LINE__, fb, vbox_crtc));
 197     /* push the previous fb to system ram */
 198     if (!atomic && fb) {
 199         vbox_fb = to_vbox_framebuffer(fb);
 200         obj = vbox_fb->obj;
 201         bo = gem_to_vbox_bo(obj);
 202         ret = vbox_bo_reserve(bo, false);
 203         if (ret)
 204             return ret;
 205         vbox_bo_push_sysram(bo);
 206         vbox_bo_unreserve(bo);
 207     }
 208
 209     vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
 210     obj = vbox_fb->obj;
 211     bo = gem_to_vbox_bo(obj);
 212
 213     ret = vbox_bo_reserve(bo, false);
 214     if (ret)
 215         return ret;
 216
 217     ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
 218     if (ret) {
 219         vbox_bo_unreserve(bo);
 220         return ret;
 221     }
 222
 223     if (&vbox->fbdev->afb == vbox_fb) {
 224         /* if pushing console in kmap it */
 225         ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
 226         if (ret)
 227             DRM_ERROR("failed to kmap fbcon\n");
 228         else
 229             vbox_fbdev_set_base(vbox, gpu_addr);
 230     }
 231     vbox_bo_unreserve(bo);
 232
 233     /* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
 234     vbox_crtc->fb_offset = gpu_addr;
 235     if (vbox_crtc->crtc_id == 0) {
 236         vbox->input_mapping_width = CRTC_FB(crtc)->width;
 237         vbox->input_mapping_height = CRTC_FB(crtc)->height;
 238     }
 239     LogFunc(("vboxvideo: %d: vbox_fb=%p, obj=%p, bo=%p, gpu_addr=%u\n",
 240              __LINE__, vbox_fb, obj, bo, (unsigned)gpu_addr));
 241     return 0;
 242 }
 243
 244 static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 245                  struct drm_framebuffer *old_fb)
 246 {
 247     LogFunc(("vboxvideo: %d\n", __LINE__));
 248     return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
 249 }
 250
 251 static int vbox_crtc_mode_set(struct drm_crtc *crtc,
 252                  struct drm_display_mode *mode,
 253                  struct drm_display_mode *adjusted_mode,
 254                  int x, int y,
 255                  struct drm_framebuffer *old_fb)
 256 {
 257     struct vbox_private *vbox = crtc->dev->dev_private;
 258     int rc = 0;
 259
 260     LogFunc(("vboxvideo: %d: vbox=%p\n", __LINE__, vbox));
 261     vbox_crtc_mode_set_base(crtc, x, y, old_fb);
 262     mutex_lock(&vbox->hw_mutex);
 263     rc = vbox_set_view(crtc);
 264     if (!rc)
 265         vbox_do_modeset(crtc, mode);
 266     /* Note that the input mapping is always relative to the first screen. */
 267     VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
 268                                 vbox->input_mapping_width,
 269                                 vbox->input_mapping_height);
 270     mutex_unlock(&vbox->hw_mutex);
 271     LogFunc(("vboxvideo: %d\n", __LINE__));
 272     return rc;
 273 }
 274
 275 static void vbox_crtc_disable(struct drm_crtc *crtc)
 276 {
 277
 278 }
 279
 280 static void vbox_crtc_prepare(struct drm_crtc *crtc)
 281 {
 282
 283 }
 284
 285 static void vbox_crtc_commit(struct drm_crtc *crtc)
 286 {
 287
 288 }
 289
 290
 291 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
 292     .dpms = vbox_crtc_dpms,
 293     .mode_fixup = vbox_crtc_mode_fixup,
 294     .mode_set = vbox_crtc_mode_set,
 295     /* .mode_set_base = vbox_crtc_mode_set_base, */
 296     .disable = vbox_crtc_disable,
 297     .load_lut = vbox_crtc_load_lut,
 298     .prepare = vbox_crtc_prepare,
 299     .commit = vbox_crtc_commit,
 300
 301 };
 302
 303 static void vbox_crtc_reset(struct drm_crtc *crtc)
 304 {
 305
 306 }
 307
 308
 309 static void vbox_crtc_destroy(struct drm_crtc *crtc)
 310 {
 311     drm_crtc_cleanup(crtc);
 312     kfree(crtc);
 313 }
 314
 315 static const struct drm_crtc_funcs vbox_crtc_funcs = {
 316     .cursor_move = vbox_cursor_move,
 317     .cursor_set2 = vbox_cursor_set2,
 318     .reset = vbox_crtc_reset,
 319     .set_config = drm_crtc_helper_set_config,
 320     /* .gamma_set = vbox_crtc_gamma_set, */
 321     .destroy = vbox_crtc_destroy,
 322 };
 323
 324 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned i)
 325 {
 326     struct vbox_crtc *vbox_crtc;
 327
 328     LogFunc(("vboxvideo: %d\n", __LINE__));
 329     vbox_crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
 330     if (!vbox_crtc)
 331         return NULL;
 332     vbox_crtc->crtc_id = i;
 333
 334     drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
 335     drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
 336     drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
 337     LogFunc(("vboxvideo: %d: crtc=%p\n", __LINE__, vbox_crtc));
 338
 339     return vbox_crtc;
 340 }
 341
 342 static void vbox_encoder_destroy(struct drm_encoder *encoder)
 343 {
 344     LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
 345     drm_encoder_cleanup(encoder);
 346     kfree(encoder);
 347 }
 348
 349 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
 350 static struct drm_encoder *drm_encoder_find(struct drm_device *dev, uint32_t id)
 351 {
 352      struct drm_mode_object *mo;
 353      mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 354      return mo ? obj_to_encoder(mo) : NULL;
 355 }
 356 #endif
 357
 358 static struct drm_encoder *vbox_best_single_encoder(struct drm_connector *connector)
 359 {
 360     int enc_id = connector->encoder_ids[0];
 361
 362     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 363     /* pick the encoder ids */
 364     if (enc_id)
 365         return drm_encoder_find(connector->dev, enc_id);
 366     LogFunc(("vboxvideo: %d\n", __LINE__));
 367     return NULL;
 368 }
 369
 370
 371 static const struct drm_encoder_funcs vbox_enc_funcs = {
 372     .destroy = vbox_encoder_destroy,
 373 };
 374
 375 static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
 376 {
 377
 378 }
 379
 380 static bool vbox_mode_fixup(struct drm_encoder *encoder,
 381                const struct drm_display_mode *mode,
 382                struct drm_display_mode *adjusted_mode)
 383 {
 384     return true;
 385 }
 386
 387 static void vbox_encoder_mode_set(struct drm_encoder *encoder,
 388                    struct drm_display_mode *mode,
 389                    struct drm_display_mode *adjusted_mode)
 390 {
 391 }
 392
 393 static void vbox_encoder_prepare(struct drm_encoder *encoder)
 394 {
 395
 396 }
 397
 398 static void vbox_encoder_commit(struct drm_encoder *encoder)
 399 {
 400
 401 }
 402
 403
 404 static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
 405     .dpms = vbox_encoder_dpms,
 406     .mode_fixup = vbox_mode_fixup,
 407     .prepare = vbox_encoder_prepare,
 408     .commit = vbox_encoder_commit,
 409     .mode_set = vbox_encoder_mode_set,
 410 };
 411
 412 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev, unsigned i)
 413 {
 414     struct vbox_encoder *vbox_encoder;
 415
 416     LogFunc(("vboxvideo: %d: dev=%d\n", __LINE__));
 417     vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
 418     if (!vbox_encoder)
 419         return NULL;
 420
 421     drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
 422                      DRM_MODE_ENCODER_DAC
 423 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
 424                      , NULL
 425 #endif
 426                      );
 427     drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
 428
 429     vbox_encoder->base.possible_crtcs = 1 << i;
 430     LogFunc(("vboxvideo: %d: vbox_encoder=%p\n", __LINE__, vbox_encoder));
 431     return &vbox_encoder->base;
 432 }
 433
 434 /** Generate EDID data with a mode-unique serial number for the virtual
 435  *  monitor to try to persuade Unity that different modes correspond to
 436  *  different monitors and it should not try to force the same resolution on
 437  *  them. */
 438 static void vbox_set_edid(struct drm_connector *connector, int width,
 439                           int height)
 440 {
 441     enum { EDID_SIZE = 128 };
 442     unsigned char edid[EDID_SIZE] = {
 443         0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
 444         0x58, 0x58, /* manufacturer (VBX) */
 445         0x00, 0x00, /* product code */
 446         0x00, 0x00,0x00, 0x00, /* serial number goes here */
 447         0x01, /* week of manufacture */
 448         0x00, /* year of manufacture */
 449         0x01, 0x03, /* EDID version */
 450         0x80, /* capabilities - digital */
 451         0x00, /* horiz. res in cm, zero for projectors */
 452         0x00, /* vert. res in cm */
 453         0x78, /* display gamma (120 == 2.2). */
 454         0xEE, /* features (standby, suspend, off, RGB, standard colour space,
 455                * preferred timing mode) */
 456         0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
 457             /* chromaticity for standard colour space. */
 458         0x00, 0x00, 0x00, /* no default timings */
 459         0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
 460         0x01, 0x01, 0x01, 0x01, /* no standard timings */
 461         0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 0x02, 0x02,
 462         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* descriptor block 1 goes here */
 463         0x00, 0x00, 0x00, 0xFD, 0x00, /* descriptor block 2, monitor ranges */
 464         0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
 465         0x20, /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
 466         0x00, 0x00, 0x00, 0xFC, 0x00, /* descriptor block 3, monitor name */
 467         'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', '\n',
 468         0x00, 0x00, 0x00, 0x10, 0x00, /* descriptor block 4: dummy data */
 469         0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
 470         0x20,
 471         0x00, /* number of extensions */
 472         0x00 /* checksum goes here */
 473     };
 474     int clock = (width + 6) * (height + 6) * 60 / 10000;
 475     unsigned i;
 476     unsigned sum = 0;
 477
 478     edid[12] = width & 0xff;
 479     edid[13] = width >> 8;
 480     edid[14] = height & 0xff;
 481     edid[15] = height >> 8;
 482     edid[54] = clock & 0xff;
 483     edid[55] = clock >> 8;
 484     edid[56] = width & 0xff;
 485     edid[58] = (width >> 4) & 0xf0;
 486     edid[59] = height & 0xff;
 487     edid[61] = (height >> 4) & 0xf0;
 488     for (i = 0; i < EDID_SIZE - 1; ++i)
 489         sum += edid[i];
 490     edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
 491     drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
 492 }
 493
 494 static int vbox_get_modes(struct drm_connector *connector)
 495 {
 496     struct vbox_connector *vbox_connector = NULL;
 497     struct drm_display_mode *mode = NULL;
 498     struct vbox_private *vbox = NULL;
 499     unsigned num_modes = 0;
 500     int preferred_width, preferred_height;
 501
 502     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 503     vbox_connector = to_vbox_connector(connector);
 504     vbox = connector->dev->dev_private;
 505     if (vbox_connector->vbox_crtc->crtc_id == 0)
 506         vbox_enable_caps(vbox);
 507     if (!vbox->initial_mode_queried) {
 508         if (vbox_connector->vbox_crtc->crtc_id == 0) {
 509             vbox->initial_mode_queried = true;
 510             vbox_report_hotplug(vbox);
 511         }
 512         return drm_add_modes_noedid(connector, 800, 600);
 513     }
 514     num_modes = drm_add_modes_noedid(connector, 2560, 1600);
 515     preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
 516     preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
 517     mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
 518                          false, false);
 519     if (mode)
 520     {
 521         mode->type |= DRM_MODE_TYPE_PREFERRED;
 522         drm_mode_probed_add(connector, mode);
 523         ++num_modes;
 524     }
 525     vbox_set_edid(connector, preferred_width, preferred_height);
 526     return num_modes;
 527 }
 528
 529 static int vbox_mode_valid(struct drm_connector *connector,
 530               struct drm_display_mode *mode)
 531 {
 532     return MODE_OK;
 533 }
 534
 535 static void vbox_connector_destroy(struct drm_connector *connector)
 536 {
 537     struct vbox_connector *vbox_connector = NULL;
 538
 539     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 540     vbox_connector = to_vbox_connector(connector);
 541 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
 542     drm_sysfs_connector_remove(connector);
 543 #else
 544     drm_connector_unregister(connector);
 545 #endif
 546     drm_connector_cleanup(connector);
 547     kfree(connector);
 548 }
 549
 550 static enum drm_connector_status
 551 vbox_connector_detect(struct drm_connector *connector, bool force)
 552 {
 553     struct vbox_connector *vbox_connector = NULL;
 554
 555     (void) force;
 556     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 557     vbox_connector = to_vbox_connector(connector);
 558     return vbox_connector->mode_hint.disconnected ?
 559                 connector_status_disconnected : connector_status_connected;
 560 }
 561
 562 static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
 563 {
 564     struct vbox_connector *vbox_connector;
 565     struct drm_device *dev;
 566     struct drm_display_mode *mode, *iterator;
 567
 568     LogFunc(("vboxvideo: %d: connector=%p, max_x=%lu, max_y = %lu\n", __LINE__,
 569              connector, (unsigned long)max_x, (unsigned long)max_y));
 570     vbox_connector = to_vbox_connector(connector);
 571     dev = vbox_connector->base.dev;
 572     list_for_each_entry_safe(mode, iterator, &connector->modes, head)
 573     {
 574         list_del(&mode->head);
 575         drm_mode_destroy(dev, mode);
 576     }
 577     return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
 578 }
 579
 580 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
 581     .mode_valid = vbox_mode_valid,
 582     .get_modes = vbox_get_modes,
 583     .best_encoder = vbox_best_single_encoder,
 584 };
 585
 586 static const struct drm_connector_funcs vbox_connector_funcs = {
 587     .dpms = drm_helper_connector_dpms,
 588     .detect = vbox_connector_detect,
 589     .fill_modes = vbox_fill_modes,
 590     .destroy = vbox_connector_destroy,
 591 };
 592
 593 static int vbox_connector_init(struct drm_device *dev,
 594                                struct vbox_crtc *vbox_crtc,
 595                                struct drm_encoder *encoder)
 596 {
 597     struct vbox_connector *vbox_connector;
 598     struct drm_connector *connector;
 599
 600     LogFunc(("vboxvideo: %d: dev=%p, encoder=%p\n", __LINE__, dev,
 601              encoder));
 602     vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
 603     if (!vbox_connector)
 604         return -ENOMEM;
 605
 606     connector = &vbox_connector->base;
 607     vbox_connector->vbox_crtc = vbox_crtc;
 608
 609     drm_connector_init(dev, connector, &vbox_connector_funcs,
 610                        DRM_MODE_CONNECTOR_VGA);
 611     drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
 612
 613     connector->interlace_allowed = 0;
 614     connector->doublescan_allowed = 0;
 615
 616 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
 617     drm_mode_create_suggested_offset_properties(dev);
 618     drm_object_attach_property(&connector->base,
 619                                dev->mode_config.suggested_x_property, 0);
 620     drm_object_attach_property(&connector->base,
 621                                dev->mode_config.suggested_y_property, 0);
 622 #endif
 623 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
 624     drm_sysfs_connector_add(connector);
 625 #else
 626     drm_connector_register(connector);
 627 #endif
 628
 629     drm_mode_connector_attach_encoder(connector, encoder);
 630
 631     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 632     return 0;
 633 }
 634
 635 int vbox_mode_init(struct drm_device *dev)
 636 {
 637     struct vbox_private *vbox = dev->dev_private;
 638     struct drm_encoder *encoder;
 639     struct vbox_crtc *vbox_crtc;
 640     unsigned i;
 641     /* vbox_cursor_init(dev); */
 642     LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
 643     for (i = 0; i < vbox->num_crtcs; ++i)
 644     {
 645         vbox_crtc = vbox_crtc_init(dev, i);
 646         if (!vbox_crtc)
 647             return -ENOMEM;
 648         encoder = vbox_encoder_init(dev, i);
 649         if (!encoder)
 650             return -ENOMEM;
 651         vbox_connector_init(dev, vbox_crtc, encoder);
 652     }
 653     return 0;
 654 }
 655
 656 void vbox_mode_fini(struct drm_device *dev)
 657 {
 658     /* vbox_cursor_fini(dev); */
 659 }
 660
 661
 662 /** Copy the ARGB image and generate the mask, which is needed in case the host
 663  *  does not support ARGB cursors.  The mask is a 1BPP bitmap with the bit set
 664  *  if the corresponding alpha value in the ARGB image is greater than 0xF0. */
 665 static void copy_cursor_image(u8 *src, u8 *dst, int width, int height,
 666                               size_t mask_size)
 667 {
 668     unsigned i, j;
 669     size_t line_size = (width + 7) / 8;
 670
 671     memcpy(dst + mask_size, src, width * height * 4);
 672     for (i = 0; i < height; ++i)
 673         for (j = 0; j < width; ++j)
 674             if (((uint32_t *)src)[i * width + j] > 0xf0000000)
 675                 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
 676 }
 677
 678 static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
 679                             uint32_t handle, uint32_t width, uint32_t height,
 680                             int32_t hot_x, int32_t hot_y)
 681 {
 682     struct vbox_private *vbox = crtc->dev->dev_private;
 683     struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
 684     struct drm_gem_object *obj;
 685     struct vbox_bo *bo;
 686     int ret, rc;
 687     struct ttm_bo_kmap_obj uobj_map;
 688     u8 *src;
 689     u8 *dst = NULL;
 690     u32 caps = 0;
 691     size_t data_size, mask_size;
 692     bool src_isiomem;
 693
 694     /* Re-set this regularly as in 5.0.20 and earlier the information was lost
 695      * on save and restore. */
 696     VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
 697                                 vbox->input_mapping_width,
 698                                 vbox->input_mapping_height);
 699     if (!handle) {
 700         bool cursor_enabled = false;
 701         struct drm_crtc *crtci;
 702
 703         /* Hide cursor. */
 704         vbox_crtc->cursor_enabled = false;
 705         list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head)
 706             if (to_vbox_crtc(crtci)->cursor_enabled)
 707                 cursor_enabled = true;
 708         if (!cursor_enabled)
 709             VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
 710         return 0;
 711     }
 712     vbox_crtc->cursor_enabled = true;
 713     if (   width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT
 714         || width == 0 || height == 0)
 715         return -EINVAL;
 716     rc = VBoxQueryConfHGSMI(&vbox->submit_info,
 717                             VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
 718     ret = -RTErrConvertToErrno(rc);
 719     if (ret)
 720         return ret;
 721     if (   caps & VMMDEV_MOUSE_HOST_CANNOT_HWPOINTER
 722         || !(caps & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE))
 723         return -EINVAL;
 724
 725 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
 726     obj = drm_gem_object_lookup(file_priv, handle);
 727 #else
 728     obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 729 #endif
 730     if (obj)
 731     {
 732         bo = gem_to_vbox_bo(obj);
 733         ret = vbox_bo_reserve(bo, false);
 734         if (!ret)
 735         {
 736             /* The mask must be calculated based on the alpha channel, one bit
 737              * per ARGB word, and must be 32-bit padded. */
 738             mask_size  = ((width + 7) / 8 * height + 3) & ~3;
 739             data_size = width * height * 4 + mask_size;
 740             vbox->cursor_hot_x = min((uint32_t)max(hot_x, 0), width);
 741             vbox->cursor_hot_y = min((uint32_t)max(hot_y, 0), height);
 742             vbox->cursor_width = width;
 743             vbox->cursor_height = height;
 744             vbox->cursor_data_size = data_size;
 745             dst = vbox->cursor_data;
 746             ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
 747             if (!ret)
 748             {
 749                 src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
 750                 if (!src_isiomem)
 751                 {
 752                     uint32_t flags =   VBOX_MOUSE_POINTER_VISIBLE
 753                                       | VBOX_MOUSE_POINTER_SHAPE
 754                                       | VBOX_MOUSE_POINTER_ALPHA;
 755                     copy_cursor_image(src, dst, width, height, mask_size);
 756                     rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
 757                                                      vbox->cursor_hot_x,
 758                                                      vbox->cursor_hot_y,
 759                                                      width, height, dst,
 760                                                      data_size);
 761                     ret = -RTErrConvertToErrno(rc);
 762                 }
 763                 else
 764                     DRM_ERROR("src cursor bo should be in main memory\n");
 765                 ttm_bo_kunmap(&uobj_map);
 766             }
 767             else
 768                 vbox->cursor_data_size = 0;
 769             vbox_bo_unreserve(bo);
 770         }
 771         drm_gem_object_unreference_unlocked(obj);
 772     }
 773     else
 774     {
 775         DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
 776         ret = -ENOENT;
 777     }
 778     return ret;
 779 }
 780
 781 static int vbox_cursor_move(struct drm_crtc *crtc,
 782                int x, int y)
 783 {
 784     struct vbox_private *vbox = crtc->dev->dev_private;
 785     uint32_t flags =   VBOX_MOUSE_POINTER_VISIBLE
 786                       | VBOX_MOUSE_POINTER_SHAPE
 787                       | VBOX_MOUSE_POINTER_ALPHA;
 788     uint32_t host_x, host_y;
 789     uint32_t hot_x = 0;
 790     uint32_t hot_y = 0;
 791     int rc;
 792
 793     /* We compare these to unsigned later and don't need to handle negative. */
 794     if (x + crtc->x < 0 || y + crtc->y < 0 || vbox->cursor_data_size == 0)
 795         return 0;
 796     rc = VBoxHGSMICursorPosition(&vbox->submit_info, true, x + crtc->x,
 797                                  y + crtc->y, &host_x, &host_y);
 798     /* Work around a bug after save and restore in 5.0.20 and earlier. */
 799     if (RT_FAILURE(rc) || (host_x == 0 && host_y == 0))
 800         return -RTErrConvertToErrno(rc);
 801     if (x + crtc->x < host_x)
 802         hot_x = min(host_x - x - crtc->x, vbox->cursor_width);
 803     if (y + crtc->y < host_y)
 804         hot_y = min(host_y - y - crtc->y, vbox->cursor_height);
 805     if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
 806         return 0;
 807     vbox->cursor_hot_x = hot_x;
 808     vbox->cursor_hot_y = hot_y;
 809     rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags, hot_x, hot_y,
 810                                      vbox->cursor_width, vbox->cursor_height,
 811                                      vbox->cursor_data,
 812                                      vbox->cursor_data_size);
 813     return -RTErrConvertToErrno(rc);
 814 }