2 * Copyright (C) 2013-2017 Oracle Corporation
3 * This file is based on ast_mode.c
4 * Copyright 2012 Red Hat Inc.
5 * Parts based on xf86-video-ast
6 * Copyright (c) 2005 ASPEED Technology Inc.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 * The above copyright notice and this permission notice (including the
25 * next paragraph) shall be included in all copies or substantial portions
30 * Authors: Dave Airlie <airlied@redhat.com>
31 * Michael Thayer <michael.thayer@oracle.com,
32 * Hans de Goede <hdegoede@redhat.com>
34 #include <linux/export.h>
35 #include <drm/drm_crtc_helper.h>
36 #include <drm/drm_plane_helper.h>
39 #include "vboxvideo.h"
40 #include "hgsmi_channels.h"
42 static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
43 u32 handle, u32 width, u32 height,
44 s32 hot_x, s32 hot_y);
45 static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
48 * Set a graphics mode. Poke any required values into registers, do an HGSMI
49 * mode set and tell the host we support advanced graphics functions.
51 static void vbox_do_modeset(struct drm_crtc *crtc,
52 const struct drm_display_mode *mode)
54 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
55 struct vbox_private *vbox;
56 int width, height, bpp, pitch;
59 s32 x_offset, y_offset;
61 vbox = crtc->dev->dev_private;
62 width = mode->hdisplay ? mode->hdisplay : 640;
63 height = mode->vdisplay ? mode->vdisplay : 480;
64 crtc_id = vbox_crtc->crtc_id;
65 bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
66 pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
67 x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
68 y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
71 * This is the old way of setting graphics modes. It assumed one screen
72 * and a frame-buffer at the start of video RAM. On older versions of
73 * VirtualBox, certain parts of the code still assume that the first
74 * screen is programmed this way, so try to fake it.
76 if (vbox_crtc->crtc_id == 0 && crtc->enabled &&
77 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
78 vbox_crtc->fb_offset % (bpp / 8) == 0) {
79 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
80 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
81 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
82 vbox_write_ioport(VBE_DISPI_INDEX_BPP,
83 CRTC_FB(crtc)->format->cpp[0] * 8);
84 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
86 VBE_DISPI_INDEX_X_OFFSET,
87 vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x);
88 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
89 vbox_crtc->fb_offset / pitch + crtc->y);
92 flags = VBVA_SCREEN_F_ACTIVE;
93 flags |= (crtc->enabled && !vbox_crtc->blanked) ?
94 0 : VBVA_SCREEN_F_BLANK;
95 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
96 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
98 crtc->x * bpp / 8 + crtc->y * pitch,
100 vbox_crtc->blanked ? 0 : bpp, flags);
103 static int vbox_set_view(struct drm_crtc *crtc)
105 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
106 struct vbox_private *vbox = crtc->dev->dev_private;
107 struct vbva_infoview *p;
110 * Tell the host about the view. This design originally targeted the
111 * Windows XP driver architecture and assumed that each screen would
112 * have a dedicated frame buffer with the command buffer following it,
113 * the whole being a "view". The host works out which screen a command
114 * buffer belongs to by checking whether it is in the first view, then
115 * whether it is in the second and so on. The first match wins. We
116 * cheat around this by making the first view be the managed memory
117 * plus the first command buffer, the second the same plus the second
120 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
121 HGSMI_CH_VBVA, VBVA_INFO_VIEW);
125 p->view_index = vbox_crtc->crtc_id;
126 p->view_offset = vbox_crtc->fb_offset;
127 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
128 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
129 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
131 hgsmi_buffer_submit(vbox->guest_pool, p);
132 hgsmi_buffer_free(vbox->guest_pool, p);
137 static void vbox_crtc_load_lut(struct drm_crtc *crtc)
141 static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
143 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
144 struct vbox_private *vbox = crtc->dev->dev_private;
147 case DRM_MODE_DPMS_ON:
148 vbox_crtc->blanked = false;
150 case DRM_MODE_DPMS_STANDBY:
151 case DRM_MODE_DPMS_SUSPEND:
152 case DRM_MODE_DPMS_OFF:
153 vbox_crtc->blanked = true;
157 mutex_lock(&vbox->hw_mutex);
158 vbox_do_modeset(crtc, &crtc->hwmode);
159 mutex_unlock(&vbox->hw_mutex);
162 static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
163 const struct drm_display_mode *mode,
164 struct drm_display_mode *adjusted_mode)
170 * Try to map the layout of virtual screens to the range of the input device.
171 * Return true if we need to re-set the crtc modes due to screen offset
174 static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
176 struct drm_crtc *crtci;
177 struct drm_connector *connectori;
178 struct drm_framebuffer *fb1 = NULL;
179 bool single_framebuffer = true;
180 bool old_single_framebuffer = vbox->single_framebuffer;
181 u16 width = 0, height = 0;
184 * Are we using an X.Org-style single large frame-buffer for all crtcs?
185 * If so then screen layout can be deduced from the crtc offsets.
186 * Same fall-back if this is the fbdev frame-buffer.
188 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
190 fb1 = CRTC_FB(crtci);
191 if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
193 } else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
194 single_framebuffer = false;
197 if (single_framebuffer) {
198 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
200 if (to_vbox_crtc(crtci)->crtc_id != 0)
203 vbox->single_framebuffer = true;
204 vbox->input_mapping_width = CRTC_FB(crtci)->width;
205 vbox->input_mapping_height = CRTC_FB(crtci)->height;
206 return old_single_framebuffer !=
207 vbox->single_framebuffer;
210 /* Otherwise calculate the total span of all screens. */
211 list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
213 struct vbox_connector *vbox_connector =
214 to_vbox_connector(connectori);
215 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
217 width = max_t(u16, width, vbox_crtc->x_hint +
218 vbox_connector->mode_hint.width);
219 height = max_t(u16, height, vbox_crtc->y_hint +
220 vbox_connector->mode_hint.height);
223 vbox->single_framebuffer = false;
224 vbox->input_mapping_width = width;
225 vbox->input_mapping_height = height;
227 return old_single_framebuffer != vbox->single_framebuffer;
230 static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
231 struct drm_framebuffer *old_fb, int x, int y)
233 struct vbox_private *vbox = crtc->dev->dev_private;
234 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
235 struct drm_gem_object *obj;
236 struct vbox_framebuffer *vbox_fb;
241 /* Unpin the previous fb. */
243 vbox_fb = to_vbox_framebuffer(old_fb);
245 bo = gem_to_vbox_bo(obj);
246 ret = vbox_bo_reserve(bo, false);
251 vbox_bo_unreserve(bo);
254 vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
256 bo = gem_to_vbox_bo(obj);
258 ret = vbox_bo_reserve(bo, false);
262 ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
264 vbox_bo_unreserve(bo);
268 if (&vbox->fbdev->afb == vbox_fb)
269 vbox_fbdev_set_base(vbox, gpu_addr);
270 vbox_bo_unreserve(bo);
272 /* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
273 vbox_crtc->fb_offset = gpu_addr;
274 if (vbox_set_up_input_mapping(vbox)) {
275 struct drm_crtc *crtci;
277 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
280 vbox_do_modeset(crtci, &crtci->mode);
287 static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
288 struct drm_framebuffer *old_fb)
290 return vbox_crtc_do_set_base(crtc, old_fb, x, y);
293 static int vbox_crtc_mode_set(struct drm_crtc *crtc,
294 struct drm_display_mode *mode,
295 struct drm_display_mode *adjusted_mode,
296 int x, int y, struct drm_framebuffer *old_fb)
298 struct vbox_private *vbox = crtc->dev->dev_private;
301 vbox_crtc_mode_set_base(crtc, x, y, old_fb);
303 mutex_lock(&vbox->hw_mutex);
304 ret = vbox_set_view(crtc);
306 vbox_do_modeset(crtc, mode);
307 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
308 vbox->input_mapping_width,
309 vbox->input_mapping_height);
310 mutex_unlock(&vbox->hw_mutex);
315 static void vbox_crtc_disable(struct drm_crtc *crtc)
319 static void vbox_crtc_prepare(struct drm_crtc *crtc)
323 static void vbox_crtc_commit(struct drm_crtc *crtc)
327 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
328 .dpms = vbox_crtc_dpms,
329 .mode_fixup = vbox_crtc_mode_fixup,
330 .mode_set = vbox_crtc_mode_set,
331 /* .mode_set_base = vbox_crtc_mode_set_base, */
332 .disable = vbox_crtc_disable,
333 .load_lut = vbox_crtc_load_lut,
334 .prepare = vbox_crtc_prepare,
335 .commit = vbox_crtc_commit,
338 static void vbox_crtc_reset(struct drm_crtc *crtc)
342 static void vbox_crtc_destroy(struct drm_crtc *crtc)
344 drm_crtc_cleanup(crtc);
348 static const struct drm_crtc_funcs vbox_crtc_funcs = {
349 .cursor_move = vbox_cursor_move,
350 .cursor_set2 = vbox_cursor_set2,
351 .reset = vbox_crtc_reset,
352 .set_config = drm_crtc_helper_set_config,
353 /* .gamma_set = vbox_crtc_gamma_set, */
354 .destroy = vbox_crtc_destroy,
357 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
359 struct vbox_crtc *vbox_crtc;
361 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
365 vbox_crtc->crtc_id = i;
367 drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
368 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
369 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
374 static void vbox_encoder_destroy(struct drm_encoder *encoder)
376 drm_encoder_cleanup(encoder);
380 static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
383 int enc_id = connector->encoder_ids[0];
385 /* pick the encoder ids */
387 return drm_encoder_find(connector->dev, enc_id);
392 static const struct drm_encoder_funcs vbox_enc_funcs = {
393 .destroy = vbox_encoder_destroy,
396 static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
400 static bool vbox_mode_fixup(struct drm_encoder *encoder,
401 const struct drm_display_mode *mode,
402 struct drm_display_mode *adjusted_mode)
407 static void vbox_encoder_mode_set(struct drm_encoder *encoder,
408 struct drm_display_mode *mode,
409 struct drm_display_mode *adjusted_mode)
413 static void vbox_encoder_prepare(struct drm_encoder *encoder)
417 static void vbox_encoder_commit(struct drm_encoder *encoder)
421 static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
422 .dpms = vbox_encoder_dpms,
423 .mode_fixup = vbox_mode_fixup,
424 .prepare = vbox_encoder_prepare,
425 .commit = vbox_encoder_commit,
426 .mode_set = vbox_encoder_mode_set,
429 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
432 struct vbox_encoder *vbox_encoder;
434 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
438 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
439 DRM_MODE_ENCODER_DAC, NULL);
440 drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
442 vbox_encoder->base.possible_crtcs = 1 << i;
443 return &vbox_encoder->base;
447 * Generate EDID data with a mode-unique serial number for the virtual
448 * monitor to try to persuade Unity that different modes correspond to
449 * different monitors and it should not try to force the same resolution on
452 static void vbox_set_edid(struct drm_connector *connector, int width,
455 enum { EDID_SIZE = 128 };
456 unsigned char edid[EDID_SIZE] = {
457 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
458 0x58, 0x58, /* manufacturer (VBX) */
459 0x00, 0x00, /* product code */
460 0x00, 0x00, 0x00, 0x00, /* serial number goes here */
461 0x01, /* week of manufacture */
462 0x00, /* year of manufacture */
463 0x01, 0x03, /* EDID version */
464 0x80, /* capabilities - digital */
465 0x00, /* horiz. res in cm, zero for projectors */
466 0x00, /* vert. res in cm */
467 0x78, /* display gamma (120 == 2.2). */
468 0xEE, /* features (standby, suspend, off, RGB, std */
469 /* colour space, preferred timing mode) */
470 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
471 /* chromaticity for standard colour space. */
472 0x00, 0x00, 0x00, /* no default timings */
473 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
475 0x01, 0x01, 0x01, 0x01, /* no standard timings */
476 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
478 /* descriptor block 1 goes below */
479 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
480 /* descriptor block 2, monitor ranges */
481 0x00, 0x00, 0x00, 0xFD, 0x00,
482 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
484 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
486 /* descriptor block 3, monitor name */
487 0x00, 0x00, 0x00, 0xFC, 0x00,
488 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
490 /* descriptor block 4: dummy data */
491 0x00, 0x00, 0x00, 0x10, 0x00,
492 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
493 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
495 0x00, /* number of extensions */
496 0x00 /* checksum goes here */
498 int clock = (width + 6) * (height + 6) * 60 / 10000;
499 unsigned int i, sum = 0;
501 edid[12] = width & 0xff;
502 edid[13] = width >> 8;
503 edid[14] = height & 0xff;
504 edid[15] = height >> 8;
505 edid[54] = clock & 0xff;
506 edid[55] = clock >> 8;
507 edid[56] = width & 0xff;
508 edid[58] = (width >> 4) & 0xf0;
509 edid[59] = height & 0xff;
510 edid[61] = (height >> 4) & 0xf0;
511 for (i = 0; i < EDID_SIZE - 1; ++i)
513 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
514 drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
517 static int vbox_get_modes(struct drm_connector *connector)
519 struct vbox_connector *vbox_connector = NULL;
520 struct drm_display_mode *mode = NULL;
521 struct vbox_private *vbox = NULL;
522 unsigned int num_modes = 0;
523 int preferred_width, preferred_height;
525 vbox_connector = to_vbox_connector(connector);
526 vbox = connector->dev->dev_private;
528 * Heuristic: we do not want to tell the host that we support dynamic
529 * resizing unless we feel confident that the user space client using
530 * the video driver can handle hot-plug events. So the first time modes
531 * are queried after a "master" switch we tell the host that we do not,
532 * and immediately after we send the client a hot-plug notification as
533 * a test to see if they will respond and query again.
534 * That is also the reason why capabilities are reported to the host at
535 * this place in the code rather than elsewhere.
536 * We need to report the flags location before reporting the IRQ
539 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
541 if (vbox_connector->vbox_crtc->crtc_id == 0)
542 vbox_report_caps(vbox);
543 if (!vbox->initial_mode_queried) {
544 if (vbox_connector->vbox_crtc->crtc_id == 0) {
545 vbox->initial_mode_queried = true;
546 vbox_report_hotplug(vbox);
548 return drm_add_modes_noedid(connector, 800, 600);
550 num_modes = drm_add_modes_noedid(connector, 2560, 1600);
551 preferred_width = vbox_connector->mode_hint.width ?
552 vbox_connector->mode_hint.width : 1024;
553 preferred_height = vbox_connector->mode_hint.height ?
554 vbox_connector->mode_hint.height : 768;
555 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
556 60, false, false, false);
558 mode->type |= DRM_MODE_TYPE_PREFERRED;
559 drm_mode_probed_add(connector, mode);
562 vbox_set_edid(connector, preferred_width, preferred_height);
563 drm_object_property_set_value(
564 &connector->base, vbox->dev->mode_config.suggested_x_property,
565 vbox_connector->vbox_crtc->x_hint);
566 drm_object_property_set_value(
567 &connector->base, vbox->dev->mode_config.suggested_y_property,
568 vbox_connector->vbox_crtc->y_hint);
573 static int vbox_mode_valid(struct drm_connector *connector,
574 struct drm_display_mode *mode)
579 static void vbox_connector_destroy(struct drm_connector *connector)
581 struct vbox_connector *vbox_connector;
583 vbox_connector = to_vbox_connector(connector);
584 drm_connector_unregister(connector);
585 drm_connector_cleanup(connector);
589 static enum drm_connector_status
590 vbox_connector_detect(struct drm_connector *connector, bool force)
592 struct vbox_connector *vbox_connector;
594 vbox_connector = to_vbox_connector(connector);
596 return vbox_connector->mode_hint.disconnected ?
597 connector_status_disconnected : connector_status_connected;
600 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
603 struct vbox_connector *vbox_connector;
604 struct drm_device *dev;
605 struct drm_display_mode *mode, *iterator;
607 vbox_connector = to_vbox_connector(connector);
608 dev = vbox_connector->base.dev;
609 list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
610 list_del(&mode->head);
611 drm_mode_destroy(dev, mode);
614 return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
617 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
618 .mode_valid = vbox_mode_valid,
619 .get_modes = vbox_get_modes,
620 .best_encoder = vbox_best_single_encoder,
623 static const struct drm_connector_funcs vbox_connector_funcs = {
624 .dpms = drm_helper_connector_dpms,
625 .detect = vbox_connector_detect,
626 .fill_modes = vbox_fill_modes,
627 .destroy = vbox_connector_destroy,
630 static int vbox_connector_init(struct drm_device *dev,
631 struct vbox_crtc *vbox_crtc,
632 struct drm_encoder *encoder)
634 struct vbox_connector *vbox_connector;
635 struct drm_connector *connector;
637 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
641 connector = &vbox_connector->base;
642 vbox_connector->vbox_crtc = vbox_crtc;
644 drm_connector_init(dev, connector, &vbox_connector_funcs,
645 DRM_MODE_CONNECTOR_VGA);
646 drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
648 connector->interlace_allowed = 0;
649 connector->doublescan_allowed = 0;
651 drm_mode_create_suggested_offset_properties(dev);
652 drm_object_attach_property(&connector->base,
653 dev->mode_config.suggested_x_property, -1);
654 drm_object_attach_property(&connector->base,
655 dev->mode_config.suggested_y_property, -1);
656 drm_connector_register(connector);
658 drm_mode_connector_attach_encoder(connector, encoder);
663 int vbox_mode_init(struct drm_device *dev)
665 struct vbox_private *vbox = dev->dev_private;
666 struct drm_encoder *encoder;
667 struct vbox_crtc *vbox_crtc;
671 /* vbox_cursor_init(dev); */
672 for (i = 0; i < vbox->num_crtcs; ++i) {
673 vbox_crtc = vbox_crtc_init(dev, i);
676 encoder = vbox_encoder_init(dev, i);
679 ret = vbox_connector_init(dev, vbox_crtc, encoder);
687 void vbox_mode_fini(struct drm_device *dev)
689 /* vbox_cursor_fini(dev); */
693 * Copy the ARGB image and generate the mask, which is needed in case the host
694 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
695 * if the corresponding alpha value in the ARGB image is greater than 0xF0.
697 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
700 size_t line_size = (width + 7) / 8;
703 memcpy(dst + mask_size, src, width * height * 4);
704 for (i = 0; i < height; ++i)
705 for (j = 0; j < width; ++j)
706 if (((u32 *)src)[i * width + j] > 0xf0000000)
707 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
710 static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
711 u32 handle, u32 width, u32 height,
712 s32 hot_x, s32 hot_y)
714 struct vbox_private *vbox = crtc->dev->dev_private;
715 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
716 struct ttm_bo_kmap_obj uobj_map;
717 size_t data_size, mask_size;
718 struct drm_gem_object *obj;
727 * Re-set this regularly as in 5.0.20 and earlier the information was
728 * lost on save and restore.
730 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
731 vbox->input_mapping_width,
732 vbox->input_mapping_height);
734 bool cursor_enabled = false;
735 struct drm_crtc *crtci;
738 vbox_crtc->cursor_enabled = false;
739 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
741 if (to_vbox_crtc(crtci)->cursor_enabled)
742 cursor_enabled = true;
746 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
751 vbox_crtc->cursor_enabled = true;
753 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
754 width == 0 || height == 0)
757 ret = hgsmi_query_conf(vbox->guest_pool,
758 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
762 if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
764 * -EINVAL means cursor_set2() not supported, -EAGAIN means
770 obj = drm_gem_object_lookup(file_priv, handle);
772 DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
776 bo = gem_to_vbox_bo(obj);
777 ret = vbox_bo_reserve(bo, false);
782 * The mask must be calculated based on the alpha
783 * channel, one bit per ARGB word, and must be 32-bit
786 mask_size = ((width + 7) / 8 * height + 3) & ~3;
787 data_size = width * height * 4 + mask_size;
788 vbox->cursor_hot_x = min_t(u32, max(hot_x, 0), width);
789 vbox->cursor_hot_y = min_t(u32, max(hot_y, 0), height);
790 vbox->cursor_width = width;
791 vbox->cursor_height = height;
792 vbox->cursor_data_size = data_size;
793 dst = vbox->cursor_data;
795 ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
797 vbox->cursor_data_size = 0;
798 goto out_unreserve_bo;
801 src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
803 DRM_ERROR("src cursor bo not in main memory\n");
808 copy_cursor_image(src, dst, width, height, mask_size);
810 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
811 VBOX_MOUSE_POINTER_ALPHA;
812 ret = hgsmi_update_pointer_shape(vbox->guest_pool, flags,
813 vbox->cursor_hot_x, vbox->cursor_hot_y,
814 width, height, dst, data_size);
816 ttm_bo_kunmap(&uobj_map);
818 vbox_bo_unreserve(bo);
820 drm_gem_object_unreference_unlocked(obj);
825 static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
827 struct vbox_private *vbox = crtc->dev->dev_private;
828 u32 flags = VBOX_MOUSE_POINTER_VISIBLE |
829 VBOX_MOUSE_POINTER_SHAPE | VBOX_MOUSE_POINTER_ALPHA;
831 vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
833 vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
840 * We compare these to unsigned later and don't
841 * need to handle negative.
843 if (x + crtc_x < 0 || y + crtc_y < 0 || vbox->cursor_data_size == 0)
846 ret = hgsmi_cursor_position(vbox->guest_pool, true, x + crtc_x,
847 y + crtc_y, &host_x, &host_y);
850 * The only reason we have vbox_cursor_move() is that some older clients
851 * might use DRM_IOCTL_MODE_CURSOR instead of DRM_IOCTL_MODE_CURSOR2 and
852 * use DRM_MODE_CURSOR_MOVE to set the hot-spot.
854 * However VirtualBox 5.0.20 and earlier has a bug causing it to return
855 * 0,0 as host cursor location after a save and restore.
857 * To work around this we ignore a 0, 0 return, since missing the odd
858 * time when it legitimately happens is not going to hurt much.
860 if (ret || (host_x == 0 && host_y == 0))
863 if (x + crtc_x < host_x)
864 hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
865 if (y + crtc_y < host_y)
866 hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
868 if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
871 vbox->cursor_hot_x = hot_x;
872 vbox->cursor_hot_y = hot_y;
874 return hgsmi_update_pointer_shape(vbox->guest_pool, flags,
875 hot_x, hot_y, vbox->cursor_width, vbox->cursor_height,
876 vbox->cursor_data, vbox->cursor_data_size);