1 /*
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.
7 *
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:
15 *
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.
23 *
24 * The above copyright notice and this permission notice (including the
25 * next paragraph) shall be included in all copies or substantial portions
26 * of the Software.
27 *
28 */
29 /*
30 * Authors: Dave Airlie <airlied@redhat.com>
31 * Michael Thayer <michael.thayer@oracle.com,
32 * Hans de Goede <hdegoede@redhat.com>
33 */
34 #include <linux/export.h>
35 #include <drm/drm_crtc_helper.h>
36 #include <drm/drm_plane_helper.h>
37
38 #include "vbox_drv.h"
39 #include "vboxvideo.h"
40 #include "hgsmi_channels.h"
41
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);
46
47 /**
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.
50 */
vbox_do_modeset(struct drm_crtc * crtc,const struct drm_display_mode * mode)51 static void vbox_do_modeset(struct drm_crtc *crtc,
52 const struct drm_display_mode *mode)
53 {
54 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
55 struct vbox_private *vbox;
56 int width, height, bpp, pitch;
57 u16 flags;
58 s32 x_offset, y_offset;
59
60 vbox = crtc->dev->dev_private;
61 width = mode->hdisplay ? mode->hdisplay : 640;
62 height = mode->vdisplay ? mode->vdisplay : 480;
63 bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
64 pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
65 x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
66 y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
67
68 /*
69 * This is the old way of setting graphics modes. It assumed one screen
70 * and a frame-buffer at the start of video RAM. On older versions of
71 * VirtualBox, certain parts of the code still assume that the first
72 * screen is programmed this way, so try to fake it.
73 */
74 if (vbox_crtc->crtc_id == 0 && crtc->enabled &&
75 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
76 vbox_crtc->fb_offset % (bpp / 8) == 0) {
77 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
78 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
79 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
80 vbox_write_ioport(VBE_DISPI_INDEX_BPP,
81 CRTC_FB(crtc)->format->cpp[0] * 8);
82 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
83 vbox_write_ioport(
84 VBE_DISPI_INDEX_X_OFFSET,
85 vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x);
86 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
87 vbox_crtc->fb_offset / pitch + crtc->y);
88 }
89
90 flags = VBVA_SCREEN_F_ACTIVE;
91 flags |= (crtc->enabled && !vbox_crtc->blanked) ?
92 0 : VBVA_SCREEN_F_BLANK;
93 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
94 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
95 x_offset, y_offset,
96 crtc->x * bpp / 8 + crtc->y * pitch,
97 pitch, width, height,
98 vbox_crtc->blanked ? 0 : bpp, flags);
99 }
100
vbox_set_view(struct drm_crtc * crtc)101 static int vbox_set_view(struct drm_crtc *crtc)
102 {
103 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
104 struct vbox_private *vbox = crtc->dev->dev_private;
105 struct vbva_infoview *p;
106
107 /*
108 * Tell the host about the view. This design originally targeted the
109 * Windows XP driver architecture and assumed that each screen would
110 * have a dedicated frame buffer with the command buffer following it,
111 * the whole being a "view". The host works out which screen a command
112 * buffer belongs to by checking whether it is in the first view, then
113 * whether it is in the second and so on. The first match wins. We
114 * cheat around this by making the first view be the managed memory
115 * plus the first command buffer, the second the same plus the second
116 * buffer and so on.
117 */
118 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
119 HGSMI_CH_VBVA, VBVA_INFO_VIEW);
120 if (!p)
121 return -ENOMEM;
122
123 p->view_index = vbox_crtc->crtc_id;
124 p->view_offset = vbox_crtc->fb_offset;
125 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
126 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
127 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
128
129 hgsmi_buffer_submit(vbox->guest_pool, p);
130 hgsmi_buffer_free(vbox->guest_pool, p);
131
132 return 0;
133 }
134
vbox_crtc_dpms(struct drm_crtc * crtc,int mode)135 static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
136 {
137 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
138 struct vbox_private *vbox = crtc->dev->dev_private;
139
140 switch (mode) {
141 case DRM_MODE_DPMS_ON:
142 vbox_crtc->blanked = false;
143 break;
144 case DRM_MODE_DPMS_STANDBY:
145 case DRM_MODE_DPMS_SUSPEND:
146 case DRM_MODE_DPMS_OFF:
147 vbox_crtc->blanked = true;
148 break;
149 }
150
151 mutex_lock(&vbox->hw_mutex);
152 vbox_do_modeset(crtc, &crtc->hwmode);
153 mutex_unlock(&vbox->hw_mutex);
154 }
155
vbox_crtc_mode_fixup(struct drm_crtc * crtc,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)156 static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
157 const struct drm_display_mode *mode,
158 struct drm_display_mode *adjusted_mode)
159 {
160 return true;
161 }
162
163 /*
164 * Try to map the layout of virtual screens to the range of the input device.
165 * Return true if we need to re-set the crtc modes due to screen offset
166 * changes.
167 */
vbox_set_up_input_mapping(struct vbox_private * vbox)168 static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
169 {
170 struct drm_crtc *crtci;
171 struct drm_connector *connectori;
172 struct drm_framebuffer *fb1 = NULL;
173 bool single_framebuffer = true;
174 bool old_single_framebuffer = vbox->single_framebuffer;
175 u16 width = 0, height = 0;
176
177 /*
178 * Are we using an X.Org-style single large frame-buffer for all crtcs?
179 * If so then screen layout can be deduced from the crtc offsets.
180 * Same fall-back if this is the fbdev frame-buffer.
181 */
182 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
183 if (!fb1) {
184 fb1 = CRTC_FB(crtci);
185 if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
186 break;
187 } else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
188 single_framebuffer = false;
189 }
190 }
191 if (single_framebuffer) {
192 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
193 head) {
194 if (to_vbox_crtc(crtci)->crtc_id != 0)
195 continue;
196
197 vbox->single_framebuffer = true;
198 vbox->input_mapping_width = CRTC_FB(crtci)->width;
199 vbox->input_mapping_height = CRTC_FB(crtci)->height;
200 return old_single_framebuffer !=
201 vbox->single_framebuffer;
202 }
203 }
204 /* Otherwise calculate the total span of all screens. */
205 list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
206 head) {
207 struct vbox_connector *vbox_connector =
208 to_vbox_connector(connectori);
209 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
210
211 width = max_t(u16, width, vbox_crtc->x_hint +
212 vbox_connector->mode_hint.width);
213 height = max_t(u16, height, vbox_crtc->y_hint +
214 vbox_connector->mode_hint.height);
215 }
216
217 vbox->single_framebuffer = false;
218 vbox->input_mapping_width = width;
219 vbox->input_mapping_height = height;
220
221 return old_single_framebuffer != vbox->single_framebuffer;
222 }
223
vbox_crtc_do_set_base(struct drm_crtc * crtc,struct drm_framebuffer * old_fb,int x,int y)224 static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
225 struct drm_framebuffer *old_fb, int x, int y)
226 {
227 struct vbox_private *vbox = crtc->dev->dev_private;
228 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
229 struct drm_gem_object *obj;
230 struct vbox_framebuffer *vbox_fb;
231 struct vbox_bo *bo;
232 int ret;
233 u64 gpu_addr;
234
235 /* Unpin the previous fb. */
236 if (old_fb) {
237 vbox_fb = to_vbox_framebuffer(old_fb);
238 obj = vbox_fb->obj;
239 bo = gem_to_vbox_bo(obj);
240 ret = vbox_bo_reserve(bo, false);
241 if (ret)
242 return ret;
243
244 vbox_bo_unpin(bo);
245 vbox_bo_unreserve(bo);
246 }
247
248 vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
249 obj = vbox_fb->obj;
250 bo = gem_to_vbox_bo(obj);
251
252 ret = vbox_bo_reserve(bo, false);
253 if (ret)
254 return ret;
255
256 ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
257 if (ret) {
258 vbox_bo_unreserve(bo);
259 return ret;
260 }
261
262 if (&vbox->fbdev->afb == vbox_fb)
263 vbox_fbdev_set_base(vbox, gpu_addr);
264 vbox_bo_unreserve(bo);
265
266 /* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
267 vbox_crtc->fb_offset = gpu_addr;
268 if (vbox_set_up_input_mapping(vbox)) {
269 struct drm_crtc *crtci;
270
271 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
272 head) {
273 vbox_set_view(crtc);
274 vbox_do_modeset(crtci, &crtci->mode);
275 }
276 }
277
278 return 0;
279 }
280
vbox_crtc_mode_set_base(struct drm_crtc * crtc,int x,int y,struct drm_framebuffer * old_fb)281 static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
282 struct drm_framebuffer *old_fb)
283 {
284 return vbox_crtc_do_set_base(crtc, old_fb, x, y);
285 }
286
vbox_crtc_mode_set(struct drm_crtc * crtc,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode,int x,int y,struct drm_framebuffer * old_fb)287 static int vbox_crtc_mode_set(struct drm_crtc *crtc,
288 struct drm_display_mode *mode,
289 struct drm_display_mode *adjusted_mode,
290 int x, int y, struct drm_framebuffer *old_fb)
291 {
292 struct vbox_private *vbox = crtc->dev->dev_private;
293 int ret;
294
295 vbox_crtc_mode_set_base(crtc, x, y, old_fb);
296
297 mutex_lock(&vbox->hw_mutex);
298 ret = vbox_set_view(crtc);
299 if (!ret)
300 vbox_do_modeset(crtc, mode);
301 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
302 vbox->input_mapping_width,
303 vbox->input_mapping_height);
304 mutex_unlock(&vbox->hw_mutex);
305
306 return ret;
307 }
308
vbox_crtc_disable(struct drm_crtc * crtc)309 static void vbox_crtc_disable(struct drm_crtc *crtc)
310 {
311 }
312
vbox_crtc_prepare(struct drm_crtc * crtc)313 static void vbox_crtc_prepare(struct drm_crtc *crtc)
314 {
315 }
316
vbox_crtc_commit(struct drm_crtc * crtc)317 static void vbox_crtc_commit(struct drm_crtc *crtc)
318 {
319 }
320
321 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
322 .dpms = vbox_crtc_dpms,
323 .mode_fixup = vbox_crtc_mode_fixup,
324 .mode_set = vbox_crtc_mode_set,
325 /* .mode_set_base = vbox_crtc_mode_set_base, */
326 .disable = vbox_crtc_disable,
327 .prepare = vbox_crtc_prepare,
328 .commit = vbox_crtc_commit,
329 };
330
vbox_crtc_reset(struct drm_crtc * crtc)331 static void vbox_crtc_reset(struct drm_crtc *crtc)
332 {
333 }
334
vbox_crtc_destroy(struct drm_crtc * crtc)335 static void vbox_crtc_destroy(struct drm_crtc *crtc)
336 {
337 drm_crtc_cleanup(crtc);
338 kfree(crtc);
339 }
340
341 static const struct drm_crtc_funcs vbox_crtc_funcs = {
342 .cursor_move = vbox_cursor_move,
343 .cursor_set2 = vbox_cursor_set2,
344 .reset = vbox_crtc_reset,
345 .set_config = drm_crtc_helper_set_config,
346 /* .gamma_set = vbox_crtc_gamma_set, */
347 .destroy = vbox_crtc_destroy,
348 };
349
vbox_crtc_init(struct drm_device * dev,unsigned int i)350 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
351 {
352 struct vbox_crtc *vbox_crtc;
353
354 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
355 if (!vbox_crtc)
356 return NULL;
357
358 vbox_crtc->crtc_id = i;
359
360 drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
361 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
362 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
363
364 return vbox_crtc;
365 }
366
vbox_encoder_destroy(struct drm_encoder * encoder)367 static void vbox_encoder_destroy(struct drm_encoder *encoder)
368 {
369 drm_encoder_cleanup(encoder);
370 kfree(encoder);
371 }
372
vbox_best_single_encoder(struct drm_connector * connector)373 static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
374 *connector)
375 {
376 int enc_id = connector->encoder_ids[0];
377
378 /* pick the encoder ids */
379 if (enc_id)
380 return drm_encoder_find(connector->dev, enc_id);
381
382 return NULL;
383 }
384
385 static const struct drm_encoder_funcs vbox_enc_funcs = {
386 .destroy = vbox_encoder_destroy,
387 };
388
vbox_encoder_dpms(struct drm_encoder * encoder,int mode)389 static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
390 {
391 }
392
vbox_mode_fixup(struct drm_encoder * encoder,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)393 static bool vbox_mode_fixup(struct drm_encoder *encoder,
394 const struct drm_display_mode *mode,
395 struct drm_display_mode *adjusted_mode)
396 {
397 return true;
398 }
399
vbox_encoder_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)400 static void vbox_encoder_mode_set(struct drm_encoder *encoder,
401 struct drm_display_mode *mode,
402 struct drm_display_mode *adjusted_mode)
403 {
404 }
405
vbox_encoder_prepare(struct drm_encoder * encoder)406 static void vbox_encoder_prepare(struct drm_encoder *encoder)
407 {
408 }
409
vbox_encoder_commit(struct drm_encoder * encoder)410 static void vbox_encoder_commit(struct drm_encoder *encoder)
411 {
412 }
413
414 static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
415 .dpms = vbox_encoder_dpms,
416 .mode_fixup = vbox_mode_fixup,
417 .prepare = vbox_encoder_prepare,
418 .commit = vbox_encoder_commit,
419 .mode_set = vbox_encoder_mode_set,
420 };
421
vbox_encoder_init(struct drm_device * dev,unsigned int i)422 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
423 unsigned int i)
424 {
425 struct vbox_encoder *vbox_encoder;
426
427 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
428 if (!vbox_encoder)
429 return NULL;
430
431 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
432 DRM_MODE_ENCODER_DAC, NULL);
433 drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
434
435 vbox_encoder->base.possible_crtcs = 1 << i;
436 return &vbox_encoder->base;
437 }
438
439 /**
440 * Generate EDID data with a mode-unique serial number for the virtual
441 * monitor to try to persuade Unity that different modes correspond to
442 * different monitors and it should not try to force the same resolution on
443 * them.
444 */
vbox_set_edid(struct drm_connector * connector,int width,int height)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, std */
462 /* colour space, 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,
467 0x01, 0x01,
468 0x01, 0x01, 0x01, 0x01, /* no standard timings */
469 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
470 0x02, 0x02,
471 /* descriptor block 1 goes below */
472 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
473 /* descriptor block 2, monitor ranges */
474 0x00, 0x00, 0x00, 0xFD, 0x00,
475 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
476 0x20, 0x20,
477 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
478 0x20,
479 /* descriptor block 3, monitor name */
480 0x00, 0x00, 0x00, 0xFC, 0x00,
481 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
482 '\n',
483 /* descriptor block 4: dummy data */
484 0x00, 0x00, 0x00, 0x10, 0x00,
485 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
486 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
487 0x20,
488 0x00, /* number of extensions */
489 0x00 /* checksum goes here */
490 };
491 int clock = (width + 6) * (height + 6) * 60 / 10000;
492 unsigned int i, sum = 0;
493
494 edid[12] = width & 0xff;
495 edid[13] = width >> 8;
496 edid[14] = height & 0xff;
497 edid[15] = height >> 8;
498 edid[54] = clock & 0xff;
499 edid[55] = clock >> 8;
500 edid[56] = width & 0xff;
501 edid[58] = (width >> 4) & 0xf0;
502 edid[59] = height & 0xff;
503 edid[61] = (height >> 4) & 0xf0;
504 for (i = 0; i < EDID_SIZE - 1; ++i)
505 sum += edid[i];
506 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
507 drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
508 }
509
vbox_get_modes(struct drm_connector * connector)510 static int vbox_get_modes(struct drm_connector *connector)
511 {
512 struct vbox_connector *vbox_connector = NULL;
513 struct drm_display_mode *mode = NULL;
514 struct vbox_private *vbox = NULL;
515 unsigned int num_modes = 0;
516 int preferred_width, preferred_height;
517
518 vbox_connector = to_vbox_connector(connector);
519 vbox = connector->dev->dev_private;
520 /*
521 * Heuristic: we do not want to tell the host that we support dynamic
522 * resizing unless we feel confident that the user space client using
523 * the video driver can handle hot-plug events. So the first time modes
524 * are queried after a "master" switch we tell the host that we do not,
525 * and immediately after we send the client a hot-plug notification as
526 * a test to see if they will respond and query again.
527 * That is also the reason why capabilities are reported to the host at
528 * this place in the code rather than elsewhere.
529 * We need to report the flags location before reporting the IRQ
530 * capability.
531 */
532 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
533 HOST_FLAGS_OFFSET);
534 if (vbox_connector->vbox_crtc->crtc_id == 0)
535 vbox_report_caps(vbox);
536 if (!vbox->initial_mode_queried) {
537 if (vbox_connector->vbox_crtc->crtc_id == 0) {
538 vbox->initial_mode_queried = true;
539 vbox_report_hotplug(vbox);
540 }
541 return drm_add_modes_noedid(connector, 800, 600);
542 }
543 num_modes = drm_add_modes_noedid(connector, 2560, 1600);
544 preferred_width = vbox_connector->mode_hint.width ?
545 vbox_connector->mode_hint.width : 1024;
546 preferred_height = vbox_connector->mode_hint.height ?
547 vbox_connector->mode_hint.height : 768;
548 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
549 60, false, false, false);
550 if (mode) {
551 mode->type |= DRM_MODE_TYPE_PREFERRED;
552 drm_mode_probed_add(connector, mode);
553 ++num_modes;
554 }
555 vbox_set_edid(connector, preferred_width, preferred_height);
556
557 if (vbox_connector->vbox_crtc->x_hint != -1)
558 drm_object_property_set_value(&connector->base,
559 vbox->dev->mode_config.suggested_x_property,
560 vbox_connector->vbox_crtc->x_hint);
561 else
562 drm_object_property_set_value(&connector->base,
563 vbox->dev->mode_config.suggested_x_property, 0);
564
565 if (vbox_connector->vbox_crtc->y_hint != -1)
566 drm_object_property_set_value(&connector->base,
567 vbox->dev->mode_config.suggested_y_property,
568 vbox_connector->vbox_crtc->y_hint);
569 else
570 drm_object_property_set_value(&connector->base,
571 vbox->dev->mode_config.suggested_y_property, 0);
572
573 return num_modes;
574 }
575
vbox_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)576 static int vbox_mode_valid(struct drm_connector *connector,
577 struct drm_display_mode *mode)
578 {
579 return MODE_OK;
580 }
581
vbox_connector_destroy(struct drm_connector * connector)582 static void vbox_connector_destroy(struct drm_connector *connector)
583 {
584 drm_connector_unregister(connector);
585 drm_connector_cleanup(connector);
586 kfree(connector);
587 }
588
589 static enum drm_connector_status
vbox_connector_detect(struct drm_connector * connector,bool force)590 vbox_connector_detect(struct drm_connector *connector, bool force)
591 {
592 struct vbox_connector *vbox_connector;
593
594 vbox_connector = to_vbox_connector(connector);
595
596 return vbox_connector->mode_hint.disconnected ?
597 connector_status_disconnected : connector_status_connected;
598 }
599
vbox_fill_modes(struct drm_connector * connector,u32 max_x,u32 max_y)600 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
601 u32 max_y)
602 {
603 struct vbox_connector *vbox_connector;
604 struct drm_device *dev;
605 struct drm_display_mode *mode, *iterator;
606
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);
612 }
613
614 return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
615 }
616
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,
621 };
622
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,
628 };
629
vbox_connector_init(struct drm_device * dev,struct vbox_crtc * vbox_crtc,struct drm_encoder * encoder)630 static int vbox_connector_init(struct drm_device *dev,
631 struct vbox_crtc *vbox_crtc,
632 struct drm_encoder *encoder)
633 {
634 struct vbox_connector *vbox_connector;
635 struct drm_connector *connector;
636
637 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
638 if (!vbox_connector)
639 return -ENOMEM;
640
641 connector = &vbox_connector->base;
642 vbox_connector->vbox_crtc = vbox_crtc;
643
644 drm_connector_init(dev, connector, &vbox_connector_funcs,
645 DRM_MODE_CONNECTOR_VGA);
646 drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
647
648 connector->interlace_allowed = 0;
649 connector->doublescan_allowed = 0;
650
651 drm_mode_create_suggested_offset_properties(dev);
652 drm_object_attach_property(&connector->base,
653 dev->mode_config.suggested_x_property, 0);
654 drm_object_attach_property(&connector->base,
655 dev->mode_config.suggested_y_property, 0);
656 drm_connector_register(connector);
657
658 drm_mode_connector_attach_encoder(connector, encoder);
659
660 return 0;
661 }
662
vbox_mode_init(struct drm_device * dev)663 int vbox_mode_init(struct drm_device *dev)
664 {
665 struct vbox_private *vbox = dev->dev_private;
666 struct drm_encoder *encoder;
667 struct vbox_crtc *vbox_crtc;
668 unsigned int i;
669 int ret;
670
671 /* vbox_cursor_init(dev); */
672 for (i = 0; i < vbox->num_crtcs; ++i) {
673 vbox_crtc = vbox_crtc_init(dev, i);
674 if (!vbox_crtc)
675 return -ENOMEM;
676 encoder = vbox_encoder_init(dev, i);
677 if (!encoder)
678 return -ENOMEM;
679 ret = vbox_connector_init(dev, vbox_crtc, encoder);
680 if (ret)
681 return ret;
682 }
683
684 return 0;
685 }
686
vbox_mode_fini(struct drm_device * dev)687 void vbox_mode_fini(struct drm_device *dev)
688 {
689 /* vbox_cursor_fini(dev); */
690 }
691
692 /**
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.
696 */
copy_cursor_image(u8 * src,u8 * dst,u32 width,u32 height,size_t mask_size)697 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
698 size_t mask_size)
699 {
700 size_t line_size = (width + 7) / 8;
701 u32 i, j;
702
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));
708 }
709
vbox_cursor_set2(struct drm_crtc * crtc,struct drm_file * file_priv,u32 handle,u32 width,u32 height,s32 hot_x,s32 hot_y)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)
713 {
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;
719 u32 flags, caps = 0;
720 struct vbox_bo *bo;
721 bool src_isiomem;
722 u8 *dst = NULL;
723 u8 *src;
724 int ret;
725
726 /*
727 * Re-set this regularly as in 5.0.20 and earlier the information was
728 * lost on save and restore.
729 */
730 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
731 vbox->input_mapping_width,
732 vbox->input_mapping_height);
733 if (!handle) {
734 bool cursor_enabled = false;
735 struct drm_crtc *crtci;
736
737 /* Hide cursor. */
738 vbox_crtc->cursor_enabled = false;
739 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
740 head) {
741 if (to_vbox_crtc(crtci)->cursor_enabled)
742 cursor_enabled = true;
743 }
744
745 if (!cursor_enabled)
746 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
747 0, 0, NULL, 0);
748 return 0;
749 }
750
751 vbox_crtc->cursor_enabled = true;
752
753 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
754 width == 0 || height == 0)
755 return -EINVAL;
756
757 ret = hgsmi_query_conf(vbox->guest_pool,
758 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
759 if (ret)
760 return ret;
761
762 if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
763 /*
764 * -EINVAL means cursor_set2() not supported, -EAGAIN means
765 * retry at once.
766 */
767 return -EBUSY;
768 }
769
770 obj = drm_gem_object_lookup(file_priv, handle);
771 if (!obj) {
772 DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
773 return -ENOENT;
774 }
775
776 bo = gem_to_vbox_bo(obj);
777 ret = vbox_bo_reserve(bo, false);
778 if (ret)
779 goto out_unref_obj;
780
781 /*
782 * The mask must be calculated based on the alpha
783 * channel, one bit per ARGB word, and must be 32-bit
784 * padded.
785 */
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;
794
795 ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
796 if (ret) {
797 vbox->cursor_data_size = 0;
798 goto out_unreserve_bo;
799 }
800
801 src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
802 if (src_isiomem) {
803 DRM_ERROR("src cursor bo not in main memory\n");
804 ret = -EIO;
805 goto out_unmap_bo;
806 }
807
808 copy_cursor_image(src, dst, width, height, mask_size);
809
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);
815 out_unmap_bo:
816 ttm_bo_kunmap(&uobj_map);
817 out_unreserve_bo:
818 vbox_bo_unreserve(bo);
819 out_unref_obj:
820 drm_gem_object_put_unlocked(obj);
821
822 return ret;
823 }
824
vbox_cursor_move(struct drm_crtc * crtc,int x,int y)825 static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
826 {
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;
830 s32 crtc_x =
831 vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
832 s32 crtc_y =
833 vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
834 u32 host_x, host_y;
835 u32 hot_x = 0;
836 u32 hot_y = 0;
837 int ret;
838
839 /*
840 * We compare these to unsigned later and don't
841 * need to handle negative.
842 */
843 if (x + crtc_x < 0 || y + crtc_y < 0 || vbox->cursor_data_size == 0)
844 return 0;
845
846 ret = hgsmi_cursor_position(vbox->guest_pool, true, x + crtc_x,
847 y + crtc_y, &host_x, &host_y);
848
849 /*
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.
853 *
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.
856 *
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.
859 */
860 if (ret || (host_x == 0 && host_y == 0))
861 return ret;
862
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);
867
868 if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
869 return 0;
870
871 vbox->cursor_hot_x = hot_x;
872 vbox->cursor_hot_y = hot_y;
873
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);
877 }
878