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 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
  84     bpp   = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
  85     pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
  86 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0)
  87     bpp   = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
  88     pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
  89 #else
  90     bpp   = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
  91     pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
  92 #endif
  93     /* This is the old way of setting graphics modes.  It assumed one screen
  94      * and a frame-buffer at the start of video RAM.  On older versions of
  95      * VirtualBox, certain parts of the code still assume that the first
  96      * screen is programmed this way, so try to fake it. */
  97     if (   vbox_crtc->crtc_id == 0
  98         && crtc->enabled
  99         && vbox_crtc->fb_offset / pitch < 0xffff - crtc->y
 100         && vbox_crtc->fb_offset % (bpp / 8) == 0)
 101         VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
 102 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
 103                           CRTC_FB(crtc)->format->cpp[0] * 8,
 104 #else
 105                           CRTC_FB(crtc)->bits_per_pixel,
 106 #endif
 107                           0,
 108                           vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
 109                           vbox_crtc->fb_offset / pitch + crtc->y);
 110     flags = VBVA_SCREEN_F_ACTIVE;
 111     flags |= (crtc->enabled && !vbox_crtc->blanked ? 0 : VBVA_SCREEN_F_BLANK);
 112     flags |= (vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0);
 113     VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
 114                                 crtc->x, crtc->y,
 115                                 crtc->x * bpp / 8 + crtc->y * pitch,
 116                                 pitch, width, height,
 117                                 vbox_crtc->blanked ? 0 : bpp, flags);
 118     LogFunc(("vboxvideo: %d\n", __LINE__));
 119 }
 120
 121 static int vbox_set_view(struct drm_crtc *crtc)
 122 {
 123     struct vbox_crtc   *vbox_crtc = to_vbox_crtc(crtc);
 124     struct vbox_private *vbox = crtc->dev->dev_private;
 125     void *p;
 126
 127     LogFunc(("vboxvideo: %d: vbox_crtc=%p\n", __LINE__, vbox_crtc));
 128     /* Tell the host about the view.  This design originally targeted the
 129      * Windows XP driver architecture and assumed that each screen would have
 130      * a dedicated frame buffer with the command buffer following it, the whole
 131      * being a "view".  The host works out which screen a command buffer belongs
 132      * to by checking whether it is in the first view, then whether it is in the
 133      * second and so on.  The first match wins.  We cheat around this by making
 134      * the first view be the managed memory plus the first command buffer, the
 135      * second the same plus the second buffer and so on. */
 136     p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
 137                              VBVA_INFO_VIEW);
 138     if (p)
 139     {
 140         VBVAINFOVIEW *pInfo = (VBVAINFOVIEW *)p;
 141         pInfo->u32ViewIndex = vbox_crtc->crtc_id;
 142         pInfo->u32ViewOffset = vbox_crtc->fb_offset;
 143         pInfo->u32ViewSize =   vbox->available_vram_size - vbox_crtc->fb_offset
 144                              + vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
 145         pInfo->u32MaxScreenSize = vbox->available_vram_size - vbox_crtc->fb_offset;
 146         VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
 147         VBoxHGSMIBufferFree(&vbox->submit_info, p);
 148     }
 149     else
 150         return -ENOMEM;
 151     LogFunc(("vboxvideo: %d: p=%p\n", __LINE__, p));
 152     return 0;
 153 }
 154
 155 static void vbox_crtc_load_lut(struct drm_crtc *crtc)
 156 {
 157
 158 }
 159
 160 static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
 161 {
 162     struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
 163     struct vbox_private *vbox = crtc->dev->dev_private;
 164
 165     LogFunc(("vboxvideo: %d: vbox_crtc=%p, mode=%d\n", __LINE__, vbox_crtc,
 166              mode));
 167     switch (mode) {
 168     case DRM_MODE_DPMS_ON:
 169         vbox_crtc->blanked = false;
 170         break;
 171     case DRM_MODE_DPMS_STANDBY:
 172     case DRM_MODE_DPMS_SUSPEND:
 173     case DRM_MODE_DPMS_OFF:
 174         vbox_crtc->blanked = true;
 175         break;
 176     }
 177     mutex_lock(&vbox->hw_mutex);
 178     vbox_do_modeset(crtc, &crtc->hwmode);
 179     mutex_unlock(&vbox->hw_mutex);
 180     LogFunc(("vboxvideo: %d\n", __LINE__));
 181 }
 182
 183 static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
 184                 const struct drm_display_mode *mode,
 185                 struct drm_display_mode *adjusted_mode)
 186 {
 187     return true;
 188 }
 189
 190 /* We move buffers which are not in active use out of VRAM to save memory. */
 191 static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
 192                 struct drm_framebuffer *fb,
 193                 int x, int y, int atomic)
 194 {
 195     struct vbox_private *vbox = crtc->dev->dev_private;
 196     struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
 197     struct drm_gem_object *obj;
 198     struct vbox_framebuffer *vbox_fb;
 199     struct vbox_bo *bo;
 200     int ret;
 201     u64 gpu_addr;
 202
 203     LogFunc(("vboxvideo: %d: fb=%p, vbox_crtc=%p\n", __LINE__, fb, vbox_crtc));
 204     /* push the previous fb to system ram */
 205     if (!atomic && fb) {
 206         vbox_fb = to_vbox_framebuffer(fb);
 207         obj = vbox_fb->obj;
 208         bo = gem_to_vbox_bo(obj);
 209         ret = vbox_bo_reserve(bo, false);
 210         if (ret)
 211             return ret;
 212         vbox_bo_push_sysram(bo);
 213         vbox_bo_unreserve(bo);
 214     }
 215
 216     vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
 217     obj = vbox_fb->obj;
 218     bo = gem_to_vbox_bo(obj);
 219
 220     ret = vbox_bo_reserve(bo, false);
 221     if (ret)
 222         return ret;
 223
 224     ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
 225     if (ret) {
 226         vbox_bo_unreserve(bo);
 227         return ret;
 228     }
 229
 230     if (&vbox->fbdev->afb == vbox_fb) {
 231         /* if pushing console in kmap it */
 232         ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
 233         if (ret)
 234             DRM_ERROR("failed to kmap fbcon\n");
 235         else
 236             vbox_fbdev_set_base(vbox, gpu_addr);
 237     }
 238     vbox_bo_unreserve(bo);
 239
 240     /* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
 241     vbox_crtc->fb_offset = gpu_addr;
 242     if (vbox_crtc->crtc_id == 0) {
 243         vbox->input_mapping_width = CRTC_FB(crtc)->width;
 244         vbox->input_mapping_height = CRTC_FB(crtc)->height;
 245     }
 246     LogFunc(("vboxvideo: %d: vbox_fb=%p, obj=%p, bo=%p, gpu_addr=%u\n",
 247              __LINE__, vbox_fb, obj, bo, (unsigned)gpu_addr));
 248     return 0;
 249 }
 250
 251 static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 252                  struct drm_framebuffer *old_fb)
 253 {
 254     LogFunc(("vboxvideo: %d\n", __LINE__));
 255     return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
 256 }
 257
 258 static int vbox_crtc_mode_set(struct drm_crtc *crtc,
 259                  struct drm_display_mode *mode,
 260                  struct drm_display_mode *adjusted_mode,
 261                  int x, int y,
 262                  struct drm_framebuffer *old_fb)
 263 {
 264     struct vbox_private *vbox = crtc->dev->dev_private;
 265     int rc = 0;
 266
 267     LogFunc(("vboxvideo: %d: vbox=%p\n", __LINE__, vbox));
 268     vbox_crtc_mode_set_base(crtc, x, y, old_fb);
 269     mutex_lock(&vbox->hw_mutex);
 270     rc = vbox_set_view(crtc);
 271     if (!rc)
 272         vbox_do_modeset(crtc, mode);
 273     /* Note that the input mapping is always relative to the first screen. */
 274     VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
 275                                 vbox->input_mapping_width,
 276                                 vbox->input_mapping_height);
 277     mutex_unlock(&vbox->hw_mutex);
 278     LogFunc(("vboxvideo: %d\n", __LINE__));
 279     return rc;
 280 }
 281
 282 static void vbox_crtc_disable(struct drm_crtc *crtc)
 283 {
 284
 285 }
 286
 287 static void vbox_crtc_prepare(struct drm_crtc *crtc)
 288 {
 289
 290 }
 291
 292 static void vbox_crtc_commit(struct drm_crtc *crtc)
 293 {
 294
 295 }
 296
 297
 298 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
 299     .dpms = vbox_crtc_dpms,
 300     .mode_fixup = vbox_crtc_mode_fixup,
 301     .mode_set = vbox_crtc_mode_set,
 302     /* .mode_set_base = vbox_crtc_mode_set_base, */
 303     .disable = vbox_crtc_disable,
 304     .load_lut = vbox_crtc_load_lut,
 305     .prepare = vbox_crtc_prepare,
 306     .commit = vbox_crtc_commit,
 307
 308 };
 309
 310 static void vbox_crtc_reset(struct drm_crtc *crtc)
 311 {
 312
 313 }
 314
 315
 316 static void vbox_crtc_destroy(struct drm_crtc *crtc)
 317 {
 318     drm_crtc_cleanup(crtc);
 319     kfree(crtc);
 320 }
 321
 322 static const struct drm_crtc_funcs vbox_crtc_funcs = {
 323     .cursor_move = vbox_cursor_move,
 324     .cursor_set2 = vbox_cursor_set2,
 325     .reset = vbox_crtc_reset,
 326     .set_config = drm_crtc_helper_set_config,
 327     /* .gamma_set = vbox_crtc_gamma_set, */
 328     .destroy = vbox_crtc_destroy,
 329 };
 330
 331 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned i)
 332 {
 333     struct vbox_crtc *vbox_crtc;
 334
 335     LogFunc(("vboxvideo: %d\n", __LINE__));
 336     vbox_crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
 337     if (!vbox_crtc)
 338         return NULL;
 339     vbox_crtc->crtc_id = i;
 340
 341     drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
 342     drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
 343     drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
 344     LogFunc(("vboxvideo: %d: crtc=%p\n", __LINE__, vbox_crtc));
 345
 346     return vbox_crtc;
 347 }
 348
 349 static void vbox_encoder_destroy(struct drm_encoder *encoder)
 350 {
 351     LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
 352     drm_encoder_cleanup(encoder);
 353     kfree(encoder);
 354 }
 355
 356 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
 357 static struct drm_encoder *drm_encoder_find(struct drm_device *dev, uint32_t id)
 358 {
 359      struct drm_mode_object *mo;
 360      mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 361      return mo ? obj_to_encoder(mo) : NULL;
 362 }
 363 #endif
 364
 365 static struct drm_encoder *vbox_best_single_encoder(struct drm_connector *connector)
 366 {
 367     int enc_id = connector->encoder_ids[0];
 368
 369     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 370     /* pick the encoder ids */
 371     if (enc_id)
 372         return drm_encoder_find(connector->dev, enc_id);
 373     LogFunc(("vboxvideo: %d\n", __LINE__));
 374     return NULL;
 375 }
 376
 377
 378 static const struct drm_encoder_funcs vbox_enc_funcs = {
 379     .destroy = vbox_encoder_destroy,
 380 };
 381
 382 static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
 383 {
 384
 385 }
 386
 387 static bool vbox_mode_fixup(struct drm_encoder *encoder,
 388                const struct drm_display_mode *mode,
 389                struct drm_display_mode *adjusted_mode)
 390 {
 391     return true;
 392 }
 393
 394 static void vbox_encoder_mode_set(struct drm_encoder *encoder,
 395                    struct drm_display_mode *mode,
 396                    struct drm_display_mode *adjusted_mode)
 397 {
 398 }
 399
 400 static void vbox_encoder_prepare(struct drm_encoder *encoder)
 401 {
 402
 403 }
 404
 405 static void vbox_encoder_commit(struct drm_encoder *encoder)
 406 {
 407
 408 }
 409
 410
 411 static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
 412     .dpms = vbox_encoder_dpms,
 413     .mode_fixup = vbox_mode_fixup,
 414     .prepare = vbox_encoder_prepare,
 415     .commit = vbox_encoder_commit,
 416     .mode_set = vbox_encoder_mode_set,
 417 };
 418
 419 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev, unsigned i)
 420 {
 421     struct vbox_encoder *vbox_encoder;
 422
 423     LogFunc(("vboxvideo: %d: dev=%d\n", __LINE__));
 424     vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
 425     if (!vbox_encoder)
 426         return NULL;
 427
 428     drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
 429                      DRM_MODE_ENCODER_DAC
 430 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
 431                      , NULL
 432 #endif
 433                      );
 434     drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
 435
 436     vbox_encoder->base.possible_crtcs = 1 << i;
 437     LogFunc(("vboxvideo: %d: vbox_encoder=%p\n", __LINE__, vbox_encoder));
 438     return &vbox_encoder->base;
 439 }
 440
 441 /** Generate EDID data with a mode-unique serial number for the virtual
 442  *  monitor to try to persuade Unity that different modes correspond to
 443  *  different monitors and it should not try to force the same resolution on
 444  *  them. */
 445 static void vbox_set_edid(struct drm_connector *connector, int width,
 446                           int height)
 447 {
 448     enum { EDID_SIZE = 128 };
 449     unsigned char edid[EDID_SIZE] = {
 450         0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
 451         0x58, 0x58, /* manufacturer (VBX) */
 452         0x00, 0x00, /* product code */
 453         0x00, 0x00,0x00, 0x00, /* serial number goes here */
 454         0x01, /* week of manufacture */
 455         0x00, /* year of manufacture */
 456         0x01, 0x03, /* EDID version */
 457         0x80, /* capabilities - digital */
 458         0x00, /* horiz. res in cm, zero for projectors */
 459         0x00, /* vert. res in cm */
 460         0x78, /* display gamma (120 == 2.2). */
 461         0xEE, /* features (standby, suspend, off, RGB, standard colour space,
 462                * preferred timing mode) */
 463         0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
 464             /* chromaticity for standard colour space. */
 465         0x00, 0x00, 0x00, /* no default timings */
 466         0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
 467         0x01, 0x01, 0x01, 0x01, /* no standard timings */
 468         0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 0x02, 0x02,
 469         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* descriptor block 1 goes here */
 470         0x00, 0x00, 0x00, 0xFD, 0x00, /* descriptor block 2, monitor ranges */
 471         0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
 472         0x20, /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
 473         0x00, 0x00, 0x00, 0xFC, 0x00, /* descriptor block 3, monitor name */
 474         'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', '\n',
 475         0x00, 0x00, 0x00, 0x10, 0x00, /* descriptor block 4: dummy data */
 476         0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
 477         0x20,
 478         0x00, /* number of extensions */
 479         0x00 /* checksum goes here */
 480     };
 481     int clock = (width + 6) * (height + 6) * 60 / 10000;
 482     unsigned i;
 483     unsigned sum = 0;
 484
 485     edid[12] = width & 0xff;
 486     edid[13] = width >> 8;
 487     edid[14] = height & 0xff;
 488     edid[15] = height >> 8;
 489     edid[54] = clock & 0xff;
 490     edid[55] = clock >> 8;
 491     edid[56] = width & 0xff;
 492     edid[58] = (width >> 4) & 0xf0;
 493     edid[59] = height & 0xff;
 494     edid[61] = (height >> 4) & 0xf0;
 495     for (i = 0; i < EDID_SIZE - 1; ++i)
 496         sum += edid[i];
 497     edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
 498     drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
 499 }
 500
 501 static int vbox_get_modes(struct drm_connector *connector)
 502 {
 503     struct vbox_connector *vbox_connector = NULL;
 504     struct drm_display_mode *mode = NULL;
 505     struct vbox_private *vbox = NULL;
 506     unsigned num_modes = 0;
 507     int preferred_width, preferred_height;
 508
 509     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 510     vbox_connector = to_vbox_connector(connector);
 511     vbox = connector->dev->dev_private;
 512     /* Heuristic: we do not want to tell the host that we support dynamic
 513      * resizing unless we feel confident that the user space client using
 514      * the video driver can handle hot-plug events.  So the first time modes
 515      * are queried after a "master" switch we tell the host that we do not,
 516      * and immediately after we send the client a hot-plug notification as
 517      * a test to see if they will respond and query again.
 518      * That is also the reason why capabilities are reported to the host at
 519      * this place in the code rather than elsewhere.
 520      * We need to report the flags location before reporting the IRQ
 521      * capability. */
 522     VBoxHGSMIReportFlagsLocation(&vbox->submit_info,   vbox->vram_map_start
 523                                                      + vbox->host_flags_offset);
 524     if (vbox_connector->vbox_crtc->crtc_id == 0)
 525         vbox_report_caps(vbox);
 526     if (!vbox->initial_mode_queried) {
 527         if (vbox_connector->vbox_crtc->crtc_id == 0) {
 528             vbox->initial_mode_queried = true;
 529             vbox_report_hotplug(vbox);
 530         }
 531         return drm_add_modes_noedid(connector, 800, 600);
 532     }
 533     num_modes = drm_add_modes_noedid(connector, 2560, 1600);
 534     preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
 535     preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
 536     mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
 537                          false, false);
 538     if (mode)
 539     {
 540         mode->type |= DRM_MODE_TYPE_PREFERRED;
 541         drm_mode_probed_add(connector, mode);
 542         ++num_modes;
 543     }
 544     vbox_set_edid(connector, preferred_width, preferred_height);
 545     return num_modes;
 546 }
 547
 548 static int vbox_mode_valid(struct drm_connector *connector,
 549               struct drm_display_mode *mode)
 550 {
 551     return MODE_OK;
 552 }
 553
 554 static void vbox_connector_destroy(struct drm_connector *connector)
 555 {
 556     struct vbox_connector *vbox_connector = NULL;
 557
 558     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 559     vbox_connector = to_vbox_connector(connector);
 560 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
 561     drm_sysfs_connector_remove(connector);
 562 #else
 563     drm_connector_unregister(connector);
 564 #endif
 565     drm_connector_cleanup(connector);
 566     kfree(connector);
 567 }
 568
 569 static enum drm_connector_status
 570 vbox_connector_detect(struct drm_connector *connector, bool force)
 571 {
 572     struct vbox_connector *vbox_connector = NULL;
 573
 574     (void) force;
 575     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 576     vbox_connector = to_vbox_connector(connector);
 577     return vbox_connector->mode_hint.disconnected ?
 578                 connector_status_disconnected : connector_status_connected;
 579 }
 580
 581 static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
 582 {
 583     struct vbox_connector *vbox_connector;
 584     struct drm_device *dev;
 585     struct drm_display_mode *mode, *iterator;
 586
 587     LogFunc(("vboxvideo: %d: connector=%p, max_x=%lu, max_y = %lu\n", __LINE__,
 588              connector, (unsigned long)max_x, (unsigned long)max_y));
 589     vbox_connector = to_vbox_connector(connector);
 590     dev = vbox_connector->base.dev;
 591     list_for_each_entry_safe(mode, iterator, &connector->modes, head)
 592     {
 593         list_del(&mode->head);
 594         drm_mode_destroy(dev, mode);
 595     }
 596     return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
 597 }
 598
 599 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
 600     .mode_valid = vbox_mode_valid,
 601     .get_modes = vbox_get_modes,
 602     .best_encoder = vbox_best_single_encoder,
 603 };
 604
 605 static const struct drm_connector_funcs vbox_connector_funcs = {
 606     .dpms = drm_helper_connector_dpms,
 607     .detect = vbox_connector_detect,
 608     .fill_modes = vbox_fill_modes,
 609     .destroy = vbox_connector_destroy,
 610 };
 611
 612 static int vbox_connector_init(struct drm_device *dev,
 613                                struct vbox_crtc *vbox_crtc,
 614                                struct drm_encoder *encoder)
 615 {
 616     struct vbox_connector *vbox_connector;
 617     struct drm_connector *connector;
 618
 619     LogFunc(("vboxvideo: %d: dev=%p, encoder=%p\n", __LINE__, dev,
 620              encoder));
 621     vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
 622     if (!vbox_connector)
 623         return -ENOMEM;
 624
 625     connector = &vbox_connector->base;
 626     vbox_connector->vbox_crtc = vbox_crtc;
 627
 628     drm_connector_init(dev, connector, &vbox_connector_funcs,
 629                        DRM_MODE_CONNECTOR_VGA);
 630     drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
 631
 632     connector->interlace_allowed = 0;
 633     connector->doublescan_allowed = 0;
 634
 635 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
 636     drm_mode_create_suggested_offset_properties(dev);
 637     drm_object_attach_property(&connector->base,
 638                                dev->mode_config.suggested_x_property, 0);
 639     drm_object_attach_property(&connector->base,
 640                                dev->mode_config.suggested_y_property, 0);
 641 #endif
 642 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
 643     drm_sysfs_connector_add(connector);
 644 #else
 645     drm_connector_register(connector);
 646 #endif
 647
 648     drm_mode_connector_attach_encoder(connector, encoder);
 649
 650     LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
 651     return 0;
 652 }
 653
 654 int vbox_mode_init(struct drm_device *dev)
 655 {
 656     struct vbox_private *vbox = dev->dev_private;
 657     struct drm_encoder *encoder;
 658     struct vbox_crtc *vbox_crtc;
 659     unsigned i;
 660     /* vbox_cursor_init(dev); */
 661     LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
 662     for (i = 0; i < vbox->num_crtcs; ++i)
 663     {
 664         vbox_crtc = vbox_crtc_init(dev, i);
 665         if (!vbox_crtc)
 666             return -ENOMEM;
 667         encoder = vbox_encoder_init(dev, i);
 668         if (!encoder)
 669             return -ENOMEM;
 670         vbox_connector_init(dev, vbox_crtc, encoder);
 671     }
 672     return 0;
 673 }
 674
 675 void vbox_mode_fini(struct drm_device *dev)
 676 {
 677     /* vbox_cursor_fini(dev); */
 678 }
 679
 680
 681 /** Copy the ARGB image and generate the mask, which is needed in case the host
 682  *  does not support ARGB cursors.  The mask is a 1BPP bitmap with the bit set
 683  *  if the corresponding alpha value in the ARGB image is greater than 0xF0. */
 684 static void copy_cursor_image(u8 *src, u8 *dst, int width, int height,
 685                               size_t mask_size)
 686 {
 687     unsigned i, j;
 688     size_t line_size = (width + 7) / 8;
 689
 690     memcpy(dst + mask_size, src, width * height * 4);
 691     for (i = 0; i < height; ++i)
 692         for (j = 0; j < width; ++j)
 693             if (((uint32_t *)src)[i * width + j] > 0xf0000000)
 694                 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
 695 }
 696
 697 static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
 698                             uint32_t handle, uint32_t width, uint32_t height,
 699                             int32_t hot_x, int32_t hot_y)
 700 {
 701     struct vbox_private *vbox = crtc->dev->dev_private;
 702     struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
 703     struct drm_gem_object *obj;
 704     struct vbox_bo *bo;
 705     int ret, rc;
 706     struct ttm_bo_kmap_obj uobj_map;
 707     u8 *src;
 708     u8 *dst = NULL;
 709     u32 caps = 0;
 710     size_t data_size, mask_size;
 711     bool src_isiomem;
 712
 713     /* Re-set this regularly as in 5.0.20 and earlier the information was lost
 714      * on save and restore. */
 715     VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
 716                                 vbox->input_mapping_width,
 717                                 vbox->input_mapping_height);
 718     if (!handle) {
 719         bool cursor_enabled = false;
 720         struct drm_crtc *crtci;
 721
 722         /* Hide cursor. */
 723         vbox_crtc->cursor_enabled = false;
 724         list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head)
 725             if (to_vbox_crtc(crtci)->cursor_enabled)
 726                 cursor_enabled = true;
 727         if (!cursor_enabled)
 728             VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
 729         return 0;
 730     }
 731     vbox_crtc->cursor_enabled = true;
 732     if (   width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT
 733         || width == 0 || height == 0)
 734         return -EINVAL;
 735     rc = VBoxQueryConfHGSMI(&vbox->submit_info,
 736                             VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
 737     ret = -RTErrConvertToErrno(rc);
 738     if (ret)
 739         return ret;
 740     if (   caps & VMMDEV_MOUSE_HOST_CANNOT_HWPOINTER
 741         || !(caps & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE))
 742         /* -EINVAL means cursor_set2() not supported, -EAGAIN means
 743          * retry at once. */
 744         return -EBUSY;
 745
 746 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
 747     obj = drm_gem_object_lookup(file_priv, handle);
 748 #else
 749     obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 750 #endif
 751     if (obj)
 752     {
 753         bo = gem_to_vbox_bo(obj);
 754         ret = vbox_bo_reserve(bo, false);
 755         if (!ret)
 756         {
 757             /* The mask must be calculated based on the alpha channel, one bit
 758              * per ARGB word, and must be 32-bit padded. */
 759             mask_size  = ((width + 7) / 8 * height + 3) & ~3;
 760             data_size = width * height * 4 + mask_size;
 761             vbox->cursor_hot_x = min((uint32_t)max(hot_x, 0), width);
 762             vbox->cursor_hot_y = min((uint32_t)max(hot_y, 0), height);
 763             vbox->cursor_width = width;
 764             vbox->cursor_height = height;
 765             vbox->cursor_data_size = data_size;
 766             dst = vbox->cursor_data;
 767             ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
 768             if (!ret)
 769             {
 770                 src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
 771                 if (!src_isiomem)
 772                 {
 773                     uint32_t flags =   VBOX_MOUSE_POINTER_VISIBLE
 774                                       | VBOX_MOUSE_POINTER_SHAPE
 775                                       | VBOX_MOUSE_POINTER_ALPHA;
 776                     copy_cursor_image(src, dst, width, height, mask_size);
 777                     rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
 778                                                      vbox->cursor_hot_x,
 779                                                      vbox->cursor_hot_y,
 780                                                      width, height, dst,
 781                                                      data_size);
 782                     ret = -RTErrConvertToErrno(rc);
 783                 }
 784                 else
 785                     DRM_ERROR("src cursor bo should be in main memory\n");
 786                 ttm_bo_kunmap(&uobj_map);
 787             }
 788             else
 789                 vbox->cursor_data_size = 0;
 790             vbox_bo_unreserve(bo);
 791         }
 792         drm_gem_object_unreference_unlocked(obj);
 793     }
 794     else
 795     {
 796         DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
 797         ret = -ENOENT;
 798     }
 799     return ret;
 800 }
 801
 802 static int vbox_cursor_move(struct drm_crtc *crtc,
 803                int x, int y)
 804 {
 805     struct vbox_private *vbox = crtc->dev->dev_private;
 806     uint32_t flags =   VBOX_MOUSE_POINTER_VISIBLE
 807                       | VBOX_MOUSE_POINTER_SHAPE
 808                       | VBOX_MOUSE_POINTER_ALPHA;
 809     uint32_t host_x, host_y;
 810     uint32_t hot_x = 0;
 811     uint32_t hot_y = 0;
 812     int rc;
 813
 814     /* We compare these to unsigned later and don't need to handle negative. */
 815     if (x + crtc->x < 0 || y + crtc->y < 0 || vbox->cursor_data_size == 0)
 816         return 0;
 817     rc = VBoxHGSMICursorPosition(&vbox->submit_info, true, x + crtc->x,
 818                                  y + crtc->y, &host_x, &host_y);
 819     /* Work around a bug after save and restore in 5.0.20 and earlier. */
 820     if (RT_FAILURE(rc) || (host_x == 0 && host_y == 0))
 821         return -RTErrConvertToErrno(rc);
 822     if (x + crtc->x < host_x)
 823         hot_x = min(host_x - x - crtc->x, vbox->cursor_width);
 824     if (y + crtc->y < host_y)
 825         hot_y = min(host_y - y - crtc->y, vbox->cursor_height);
 826     if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
 827         return 0;
 828     vbox->cursor_hot_x = hot_x;
 829     vbox->cursor_hot_y = hot_y;
 830     rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags, hot_x, hot_y,
 831                                      vbox->cursor_width, vbox->cursor_height,
 832                                      vbox->cursor_data,
 833                                      vbox->cursor_data_size);
 834     return -RTErrConvertToErrno(rc);
 835 }