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,struct drm_framebuffer * new_fb,int x,int y)224 static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
225 struct drm_framebuffer *old_fb,
226 struct drm_framebuffer *new_fb,
227 int x, int y)
228 {
229 struct vbox_private *vbox = crtc->dev->dev_private;
230 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
231 struct drm_gem_object *obj;
232 struct vbox_framebuffer *vbox_fb;
233 struct vbox_bo *bo;
234 int ret;
235 u64 gpu_addr;
236
237 /* Unpin the previous fb. */
238 if (old_fb) {
239 vbox_fb = to_vbox_framebuffer(old_fb);
240 obj = vbox_fb->obj;
241 bo = gem_to_vbox_bo(obj);
242 ret = vbox_bo_reserve(bo, false);
243 if (ret)
244 return ret;
245
246 vbox_bo_unpin(bo);
247 vbox_bo_unreserve(bo);
248 }
249
250 vbox_fb = to_vbox_framebuffer(new_fb);
251 obj = vbox_fb->obj;
252 bo = gem_to_vbox_bo(obj);
253
254 ret = vbox_bo_reserve(bo, false);
255 if (ret)
256 return ret;
257
258 ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
259 if (ret) {
260 vbox_bo_unreserve(bo);
261 return ret;
262 }
263
264 if (&vbox->fbdev->afb == vbox_fb)
265 vbox_fbdev_set_base(vbox, gpu_addr);
266 vbox_bo_unreserve(bo);
267
268 /* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
269 vbox_crtc->fb_offset = gpu_addr;
270 if (vbox_set_up_input_mapping(vbox)) {
271 struct drm_crtc *crtci;
272
273 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
274 head) {
275 vbox_set_view(crtc);
276 vbox_do_modeset(crtci, &crtci->mode);
277 }
278 }
279
280 return 0;
281 }
282
vbox_crtc_mode_set_base(struct drm_crtc * crtc,int x,int y,struct drm_framebuffer * old_fb)283 static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
284 struct drm_framebuffer *old_fb)
285 {
286 return vbox_crtc_do_set_base(crtc, old_fb, CRTC_FB(crtc), x, y);
287 }
288
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)289 static int vbox_crtc_mode_set(struct drm_crtc *crtc,
290 struct drm_display_mode *mode,
291 struct drm_display_mode *adjusted_mode,
292 int x, int y, struct drm_framebuffer *old_fb)
293 {
294 struct vbox_private *vbox = crtc->dev->dev_private;
295 int ret;
296
297 vbox_crtc_mode_set_base(crtc, x, y, old_fb);
298
299 mutex_lock(&vbox->hw_mutex);
300 ret = vbox_set_view(crtc);
301 if (!ret)
302 vbox_do_modeset(crtc, mode);
303 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
304 vbox->input_mapping_width,
305 vbox->input_mapping_height);
306 mutex_unlock(&vbox->hw_mutex);
307
308 return ret;
309 }
310
vbox_crtc_page_flip(struct drm_crtc * crtc,struct drm_framebuffer * fb,struct drm_pending_vblank_event * event,uint32_t page_flip_flags,struct drm_modeset_acquire_ctx * ctx)311 static int vbox_crtc_page_flip(struct drm_crtc *crtc,
312 struct drm_framebuffer *fb,
313 struct drm_pending_vblank_event *event,
314 uint32_t page_flip_flags,
315 struct drm_modeset_acquire_ctx *ctx)
316 {
317 struct vbox_private *vbox = crtc->dev->dev_private;
318 struct drm_device *drm = vbox->dev;
319 unsigned long flags;
320 int rc;
321
322 rc = vbox_crtc_do_set_base(crtc, CRTC_FB(crtc), fb, 0, 0);
323 if (rc)
324 return rc;
325
326 mutex_lock(&vbox->hw_mutex);
327 vbox_set_view(crtc);
328 vbox_do_modeset(crtc, &crtc->mode);
329 mutex_unlock(&vbox->hw_mutex);
330
331 spin_lock_irqsave(&drm->event_lock, flags);
332
333 if (event)
334 drm_crtc_send_vblank_event(crtc, event);
335
336 spin_unlock_irqrestore(&drm->event_lock, flags);
337
338 return 0;
339 }
340
vbox_crtc_disable(struct drm_crtc * crtc)341 static void vbox_crtc_disable(struct drm_crtc *crtc)
342 {
343 }
344
vbox_crtc_prepare(struct drm_crtc * crtc)345 static void vbox_crtc_prepare(struct drm_crtc *crtc)
346 {
347 }
348
vbox_crtc_commit(struct drm_crtc * crtc)349 static void vbox_crtc_commit(struct drm_crtc *crtc)
350 {
351 }
352
353 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
354 .dpms = vbox_crtc_dpms,
355 .mode_fixup = vbox_crtc_mode_fixup,
356 .mode_set = vbox_crtc_mode_set,
357 /* .mode_set_base = vbox_crtc_mode_set_base, */
358 .disable = vbox_crtc_disable,
359 .prepare = vbox_crtc_prepare,
360 .commit = vbox_crtc_commit,
361 };
362
vbox_crtc_reset(struct drm_crtc * crtc)363 static void vbox_crtc_reset(struct drm_crtc *crtc)
364 {
365 }
366
vbox_crtc_destroy(struct drm_crtc * crtc)367 static void vbox_crtc_destroy(struct drm_crtc *crtc)
368 {
369 drm_crtc_cleanup(crtc);
370 kfree(crtc);
371 }
372
373 static const struct drm_crtc_funcs vbox_crtc_funcs = {
374 .cursor_move = vbox_cursor_move,
375 .cursor_set2 = vbox_cursor_set2,
376 .reset = vbox_crtc_reset,
377 .set_config = drm_crtc_helper_set_config,
378 /* .gamma_set = vbox_crtc_gamma_set, */
379 .page_flip = vbox_crtc_page_flip,
380 .destroy = vbox_crtc_destroy,
381 };
382
vbox_crtc_init(struct drm_device * dev,unsigned int i)383 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
384 {
385 struct vbox_crtc *vbox_crtc;
386
387 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
388 if (!vbox_crtc)
389 return NULL;
390
391 vbox_crtc->crtc_id = i;
392
393 drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
394 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
395 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
396
397 return vbox_crtc;
398 }
399
vbox_encoder_destroy(struct drm_encoder * encoder)400 static void vbox_encoder_destroy(struct drm_encoder *encoder)
401 {
402 drm_encoder_cleanup(encoder);
403 kfree(encoder);
404 }
405
vbox_best_single_encoder(struct drm_connector * connector)406 static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
407 *connector)
408 {
409 int enc_id = connector->encoder_ids[0];
410
411 /* pick the encoder ids */
412 if (enc_id)
413 return drm_encoder_find(connector->dev, NULL, enc_id);
414
415 return NULL;
416 }
417
418 static const struct drm_encoder_funcs vbox_enc_funcs = {
419 .destroy = vbox_encoder_destroy,
420 };
421
vbox_encoder_dpms(struct drm_encoder * encoder,int mode)422 static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
423 {
424 }
425
vbox_mode_fixup(struct drm_encoder * encoder,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)426 static bool vbox_mode_fixup(struct drm_encoder *encoder,
427 const struct drm_display_mode *mode,
428 struct drm_display_mode *adjusted_mode)
429 {
430 return true;
431 }
432
vbox_encoder_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)433 static void vbox_encoder_mode_set(struct drm_encoder *encoder,
434 struct drm_display_mode *mode,
435 struct drm_display_mode *adjusted_mode)
436 {
437 }
438
vbox_encoder_prepare(struct drm_encoder * encoder)439 static void vbox_encoder_prepare(struct drm_encoder *encoder)
440 {
441 }
442
vbox_encoder_commit(struct drm_encoder * encoder)443 static void vbox_encoder_commit(struct drm_encoder *encoder)
444 {
445 }
446
447 static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
448 .dpms = vbox_encoder_dpms,
449 .mode_fixup = vbox_mode_fixup,
450 .prepare = vbox_encoder_prepare,
451 .commit = vbox_encoder_commit,
452 .mode_set = vbox_encoder_mode_set,
453 };
454
vbox_encoder_init(struct drm_device * dev,unsigned int i)455 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
456 unsigned int i)
457 {
458 struct vbox_encoder *vbox_encoder;
459
460 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
461 if (!vbox_encoder)
462 return NULL;
463
464 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
465 DRM_MODE_ENCODER_DAC, NULL);
466 drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
467
468 vbox_encoder->base.possible_crtcs = 1 << i;
469 return &vbox_encoder->base;
470 }
471
472 /**
473 * Generate EDID data with a mode-unique serial number for the virtual
474 * monitor to try to persuade Unity that different modes correspond to
475 * different monitors and it should not try to force the same resolution on
476 * them.
477 */
vbox_set_edid(struct drm_connector * connector,int width,int height)478 static void vbox_set_edid(struct drm_connector *connector, int width,
479 int height)
480 {
481 enum { EDID_SIZE = 128 };
482 unsigned char edid[EDID_SIZE] = {
483 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
484 0x58, 0x58, /* manufacturer (VBX) */
485 0x00, 0x00, /* product code */
486 0x00, 0x00, 0x00, 0x00, /* serial number goes here */
487 0x01, /* week of manufacture */
488 0x00, /* year of manufacture */
489 0x01, 0x03, /* EDID version */
490 0x80, /* capabilities - digital */
491 0x00, /* horiz. res in cm, zero for projectors */
492 0x00, /* vert. res in cm */
493 0x78, /* display gamma (120 == 2.2). */
494 0xEE, /* features (standby, suspend, off, RGB, std */
495 /* colour space, preferred timing mode) */
496 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
497 /* chromaticity for standard colour space. */
498 0x00, 0x00, 0x00, /* no default timings */
499 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
500 0x01, 0x01,
501 0x01, 0x01, 0x01, 0x01, /* no standard timings */
502 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
503 0x02, 0x02,
504 /* descriptor block 1 goes below */
505 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
506 /* descriptor block 2, monitor ranges */
507 0x00, 0x00, 0x00, 0xFD, 0x00,
508 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
509 0x20, 0x20,
510 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
511 0x20,
512 /* descriptor block 3, monitor name */
513 0x00, 0x00, 0x00, 0xFC, 0x00,
514 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
515 '\n',
516 /* descriptor block 4: dummy data */
517 0x00, 0x00, 0x00, 0x10, 0x00,
518 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
519 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
520 0x20,
521 0x00, /* number of extensions */
522 0x00 /* checksum goes here */
523 };
524 int clock = (width + 6) * (height + 6) * 60 / 10000;
525 unsigned int i, sum = 0;
526
527 edid[12] = width & 0xff;
528 edid[13] = width >> 8;
529 edid[14] = height & 0xff;
530 edid[15] = height >> 8;
531 edid[54] = clock & 0xff;
532 edid[55] = clock >> 8;
533 edid[56] = width & 0xff;
534 edid[58] = (width >> 4) & 0xf0;
535 edid[59] = height & 0xff;
536 edid[61] = (height >> 4) & 0xf0;
537 for (i = 0; i < EDID_SIZE - 1; ++i)
538 sum += edid[i];
539 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
540 drm_connector_update_edid_property(connector, (struct edid *)edid);
541 }
542
vbox_get_modes(struct drm_connector * connector)543 static int vbox_get_modes(struct drm_connector *connector)
544 {
545 struct vbox_connector *vbox_connector = NULL;
546 struct drm_display_mode *mode = NULL;
547 struct vbox_private *vbox = NULL;
548 unsigned int num_modes = 0;
549 int preferred_width, preferred_height;
550
551 vbox_connector = to_vbox_connector(connector);
552 vbox = connector->dev->dev_private;
553 /*
554 * Heuristic: we do not want to tell the host that we support dynamic
555 * resizing unless we feel confident that the user space client using
556 * the video driver can handle hot-plug events. So the first time modes
557 * are queried after a "master" switch we tell the host that we do not,
558 * and immediately after we send the client a hot-plug notification as
559 * a test to see if they will respond and query again.
560 * That is also the reason why capabilities are reported to the host at
561 * this place in the code rather than elsewhere.
562 * We need to report the flags location before reporting the IRQ
563 * capability.
564 */
565 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
566 HOST_FLAGS_OFFSET);
567 if (vbox_connector->vbox_crtc->crtc_id == 0)
568 vbox_report_caps(vbox);
569 if (!vbox->initial_mode_queried) {
570 if (vbox_connector->vbox_crtc->crtc_id == 0) {
571 vbox->initial_mode_queried = true;
572 vbox_report_hotplug(vbox);
573 }
574 return drm_add_modes_noedid(connector, 800, 600);
575 }
576 num_modes = drm_add_modes_noedid(connector, 2560, 1600);
577 preferred_width = vbox_connector->mode_hint.width ?
578 vbox_connector->mode_hint.width : 1024;
579 preferred_height = vbox_connector->mode_hint.height ?
580 vbox_connector->mode_hint.height : 768;
581 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
582 60, false, false, false);
583 if (mode) {
584 mode->type |= DRM_MODE_TYPE_PREFERRED;
585 drm_mode_probed_add(connector, mode);
586 ++num_modes;
587 }
588 vbox_set_edid(connector, preferred_width, preferred_height);
589
590 if (vbox_connector->vbox_crtc->x_hint != -1)
591 drm_object_property_set_value(&connector->base,
592 vbox->dev->mode_config.suggested_x_property,
593 vbox_connector->vbox_crtc->x_hint);
594 else
595 drm_object_property_set_value(&connector->base,
596 vbox->dev->mode_config.suggested_x_property, 0);
597
598 if (vbox_connector->vbox_crtc->y_hint != -1)
599 drm_object_property_set_value(&connector->base,
600 vbox->dev->mode_config.suggested_y_property,
601 vbox_connector->vbox_crtc->y_hint);
602 else
603 drm_object_property_set_value(&connector->base,
604 vbox->dev->mode_config.suggested_y_property, 0);
605
606 return num_modes;
607 }
608
vbox_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)609 static enum drm_mode_status vbox_mode_valid(struct drm_connector *connector,
610 struct drm_display_mode *mode)
611 {
612 return MODE_OK;
613 }
614
vbox_connector_destroy(struct drm_connector * connector)615 static void vbox_connector_destroy(struct drm_connector *connector)
616 {
617 drm_connector_unregister(connector);
618 drm_connector_cleanup(connector);
619 kfree(connector);
620 }
621
622 static enum drm_connector_status
vbox_connector_detect(struct drm_connector * connector,bool force)623 vbox_connector_detect(struct drm_connector *connector, bool force)
624 {
625 struct vbox_connector *vbox_connector;
626
627 vbox_connector = to_vbox_connector(connector);
628
629 return vbox_connector->mode_hint.disconnected ?
630 connector_status_disconnected : connector_status_connected;
631 }
632
vbox_fill_modes(struct drm_connector * connector,u32 max_x,u32 max_y)633 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
634 u32 max_y)
635 {
636 struct vbox_connector *vbox_connector;
637 struct drm_device *dev;
638 struct drm_display_mode *mode, *iterator;
639
640 vbox_connector = to_vbox_connector(connector);
641 dev = vbox_connector->base.dev;
642 list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
643 list_del(&mode->head);
644 drm_mode_destroy(dev, mode);
645 }
646
647 return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
648 }
649
650 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
651 .mode_valid = vbox_mode_valid,
652 .get_modes = vbox_get_modes,
653 .best_encoder = vbox_best_single_encoder,
654 };
655
656 static const struct drm_connector_funcs vbox_connector_funcs = {
657 .dpms = drm_helper_connector_dpms,
658 .detect = vbox_connector_detect,
659 .fill_modes = vbox_fill_modes,
660 .destroy = vbox_connector_destroy,
661 };
662
vbox_connector_init(struct drm_device * dev,struct vbox_crtc * vbox_crtc,struct drm_encoder * encoder)663 static int vbox_connector_init(struct drm_device *dev,
664 struct vbox_crtc *vbox_crtc,
665 struct drm_encoder *encoder)
666 {
667 struct vbox_connector *vbox_connector;
668 struct drm_connector *connector;
669
670 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
671 if (!vbox_connector)
672 return -ENOMEM;
673
674 connector = &vbox_connector->base;
675 vbox_connector->vbox_crtc = vbox_crtc;
676
677 drm_connector_init(dev, connector, &vbox_connector_funcs,
678 DRM_MODE_CONNECTOR_VGA);
679 drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
680
681 connector->interlace_allowed = 0;
682 connector->doublescan_allowed = 0;
683
684 drm_mode_create_suggested_offset_properties(dev);
685 drm_object_attach_property(&connector->base,
686 dev->mode_config.suggested_x_property, 0);
687 drm_object_attach_property(&connector->base,
688 dev->mode_config.suggested_y_property, 0);
689 drm_connector_register(connector);
690
691 drm_connector_attach_encoder(connector, encoder);
692
693 return 0;
694 }
695
vbox_mode_init(struct drm_device * dev)696 int vbox_mode_init(struct drm_device *dev)
697 {
698 struct vbox_private *vbox = dev->dev_private;
699 struct drm_encoder *encoder;
700 struct vbox_crtc *vbox_crtc;
701 unsigned int i;
702 int ret;
703
704 /* vbox_cursor_init(dev); */
705 for (i = 0; i < vbox->num_crtcs; ++i) {
706 vbox_crtc = vbox_crtc_init(dev, i);
707 if (!vbox_crtc)
708 return -ENOMEM;
709 encoder = vbox_encoder_init(dev, i);
710 if (!encoder)
711 return -ENOMEM;
712 ret = vbox_connector_init(dev, vbox_crtc, encoder);
713 if (ret)
714 return ret;
715 }
716
717 return 0;
718 }
719
vbox_mode_fini(struct drm_device * dev)720 void vbox_mode_fini(struct drm_device *dev)
721 {
722 /* vbox_cursor_fini(dev); */
723 }
724
725 /**
726 * Copy the ARGB image and generate the mask, which is needed in case the host
727 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
728 * if the corresponding alpha value in the ARGB image is greater than 0xF0.
729 */
copy_cursor_image(u8 * src,u8 * dst,u32 width,u32 height,size_t mask_size)730 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
731 size_t mask_size)
732 {
733 size_t line_size = (width + 7) / 8;
734 u32 i, j;
735
736 memcpy(dst + mask_size, src, width * height * 4);
737 for (i = 0; i < height; ++i)
738 for (j = 0; j < width; ++j)
739 if (((u32 *)src)[i * width + j] > 0xf0000000)
740 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
741 }
742
vbox_cursor_set2(struct drm_crtc * crtc,struct drm_file * file_priv,u32 handle,u32 width,u32 height,s32 hot_x,s32 hot_y)743 static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
744 u32 handle, u32 width, u32 height,
745 s32 hot_x, s32 hot_y)
746 {
747 struct vbox_private *vbox = crtc->dev->dev_private;
748 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
749 struct ttm_bo_kmap_obj uobj_map;
750 size_t data_size, mask_size;
751 struct drm_gem_object *obj;
752 u32 flags, caps = 0;
753 struct vbox_bo *bo;
754 bool src_isiomem;
755 u8 *dst = NULL;
756 u8 *src;
757 int ret;
758
759 /*
760 * Re-set this regularly as in 5.0.20 and earlier the information was
761 * lost on save and restore.
762 */
763 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
764 vbox->input_mapping_width,
765 vbox->input_mapping_height);
766 if (!handle) {
767 bool cursor_enabled = false;
768 struct drm_crtc *crtci;
769
770 /* Hide cursor. */
771 vbox_crtc->cursor_enabled = false;
772 list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
773 head) {
774 if (to_vbox_crtc(crtci)->cursor_enabled)
775 cursor_enabled = true;
776 }
777
778 if (!cursor_enabled)
779 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
780 0, 0, NULL, 0);
781 return 0;
782 }
783
784 vbox_crtc->cursor_enabled = true;
785
786 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
787 width == 0 || height == 0)
788 return -EINVAL;
789
790 ret = hgsmi_query_conf(vbox->guest_pool,
791 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
792 if (ret)
793 return ret;
794
795 if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
796 /*
797 * -EINVAL means cursor_set2() not supported, -EAGAIN means
798 * retry at once.
799 */
800 return -EBUSY;
801 }
802
803 obj = drm_gem_object_lookup(file_priv, handle);
804 if (!obj) {
805 DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
806 return -ENOENT;
807 }
808
809 bo = gem_to_vbox_bo(obj);
810 ret = vbox_bo_reserve(bo, false);
811 if (ret)
812 goto out_unref_obj;
813
814 /*
815 * The mask must be calculated based on the alpha
816 * channel, one bit per ARGB word, and must be 32-bit
817 * padded.
818 */
819 mask_size = ((width + 7) / 8 * height + 3) & ~3;
820 data_size = width * height * 4 + mask_size;
821 vbox->cursor_hot_x = min_t(u32, max(hot_x, 0), width);
822 vbox->cursor_hot_y = min_t(u32, max(hot_y, 0), height);
823 vbox->cursor_width = width;
824 vbox->cursor_height = height;
825 vbox->cursor_data_size = data_size;
826 dst = vbox->cursor_data;
827
828 ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
829 if (ret) {
830 vbox->cursor_data_size = 0;
831 goto out_unreserve_bo;
832 }
833
834 src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
835 if (src_isiomem) {
836 DRM_ERROR("src cursor bo not in main memory\n");
837 ret = -EIO;
838 goto out_unmap_bo;
839 }
840
841 copy_cursor_image(src, dst, width, height, mask_size);
842
843 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
844 VBOX_MOUSE_POINTER_ALPHA;
845 ret = hgsmi_update_pointer_shape(vbox->guest_pool, flags,
846 vbox->cursor_hot_x, vbox->cursor_hot_y,
847 width, height, dst, data_size);
848 out_unmap_bo:
849 ttm_bo_kunmap(&uobj_map);
850 out_unreserve_bo:
851 vbox_bo_unreserve(bo);
852 out_unref_obj:
853 drm_gem_object_put_unlocked(obj);
854
855 return ret;
856 }
857
vbox_cursor_move(struct drm_crtc * crtc,int x,int y)858 static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
859 {
860 struct vbox_private *vbox = crtc->dev->dev_private;
861 u32 flags = VBOX_MOUSE_POINTER_VISIBLE |
862 VBOX_MOUSE_POINTER_SHAPE | VBOX_MOUSE_POINTER_ALPHA;
863 s32 crtc_x =
864 vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
865 s32 crtc_y =
866 vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
867 u32 host_x, host_y;
868 u32 hot_x = 0;
869 u32 hot_y = 0;
870 int ret;
871
872 /*
873 * We compare these to unsigned later and don't
874 * need to handle negative.
875 */
876 if (x + crtc_x < 0 || y + crtc_y < 0 || vbox->cursor_data_size == 0)
877 return 0;
878
879 ret = hgsmi_cursor_position(vbox->guest_pool, true, x + crtc_x,
880 y + crtc_y, &host_x, &host_y);
881
882 /*
883 * The only reason we have vbox_cursor_move() is that some older clients
884 * might use DRM_IOCTL_MODE_CURSOR instead of DRM_IOCTL_MODE_CURSOR2 and
885 * use DRM_MODE_CURSOR_MOVE to set the hot-spot.
886 *
887 * However VirtualBox 5.0.20 and earlier has a bug causing it to return
888 * 0,0 as host cursor location after a save and restore.
889 *
890 * To work around this we ignore a 0, 0 return, since missing the odd
891 * time when it legitimately happens is not going to hurt much.
892 */
893 if (ret || (host_x == 0 && host_y == 0))
894 return ret;
895
896 if (x + crtc_x < host_x)
897 hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
898 if (y + crtc_y < host_y)
899 hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
900
901 if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
902 return 0;
903
904 vbox->cursor_hot_x = hot_x;
905 vbox->cursor_hot_y = hot_y;
906
907 return hgsmi_update_pointer_shape(vbox->guest_pool, flags,
908 hot_x, hot_y, vbox->cursor_width, vbox->cursor_height,
909 vbox->cursor_data, vbox->cursor_data_size);
910 }
911
