1 // SPDX-License-Identifier: MIT
2 /*
3 * Copyright (C) 2013-2017 Oracle Corporation
4 * This file is based on ast_mode.c
5 * Copyright 2012 Red Hat Inc.
6 * Parts based on xf86-video-ast
7 * Copyright (c) 2005 ASPEED Technology Inc.
8 * Authors: Dave Airlie <airlied@redhat.com>
9 * Michael Thayer <michael.thayer@oracle.com,
10 * Hans de Goede <hdegoede@redhat.com>
11 */
12
13 #include <linux/iosys-map.h>
14 #include <linux/export.h>
15
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_blend.h>
19 #include <drm/drm_edid.h>
20 #include <drm/drm_fb_helper.h>
21 #include <drm/drm_fourcc.h>
22 #include <drm/drm_framebuffer.h>
23 #include <drm/drm_gem_atomic_helper.h>
24 #include <drm/drm_gem_framebuffer_helper.h>
25 #include <drm/drm_plane_helper.h>
26 #include <drm/drm_print.h>
27 #include <drm/drm_probe_helper.h>
28
29 #include "hgsmi_channels.h"
30 #include "vbox_drv.h"
31 #include "vboxvideo.h"
32
33 /*
34 * Set a graphics mode. Poke any required values into registers, do an HGSMI
35 * mode set and tell the host we support advanced graphics functions.
36 */
vbox_do_modeset(struct drm_crtc * crtc)37 static void vbox_do_modeset(struct drm_crtc *crtc)
38 {
39 struct drm_framebuffer *fb = crtc->primary->state->fb;
40 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
41 struct vbox_private *vbox;
42 int width, height, bpp, pitch;
43 u16 flags;
44 s32 x_offset, y_offset;
45
46 vbox = to_vbox_dev(crtc->dev);
47 width = vbox_crtc->width ? vbox_crtc->width : 640;
48 height = vbox_crtc->height ? vbox_crtc->height : 480;
49 bpp = fb ? fb->format->cpp[0] * 8 : 32;
50 pitch = fb ? fb->pitches[0] : width * bpp / 8;
51 x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint;
52 y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint;
53
54 /*
55 * This is the old way of setting graphics modes. It assumed one screen
56 * and a frame-buffer at the start of video RAM. On older versions of
57 * VirtualBox, certain parts of the code still assume that the first
58 * screen is programmed this way, so try to fake it.
59 */
60 if (vbox_crtc->crtc_id == 0 && fb &&
61 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
62 vbox_crtc->fb_offset % (bpp / 8) == 0) {
63 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
64 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
65 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
66 vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp);
67 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
68 vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET,
69 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x);
70 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
71 vbox_crtc->fb_offset / pitch + vbox_crtc->y);
72 }
73
74 flags = VBVA_SCREEN_F_ACTIVE;
75 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK;
76 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
77 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
78 x_offset, y_offset,
79 vbox_crtc->x * bpp / 8 +
80 vbox_crtc->y * pitch,
81 pitch, width, height, bpp, flags);
82 }
83
vbox_set_view(struct drm_crtc * crtc)84 static int vbox_set_view(struct drm_crtc *crtc)
85 {
86 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
87 struct vbox_private *vbox = to_vbox_dev(crtc->dev);
88 struct vbva_infoview *p;
89
90 /*
91 * Tell the host about the view. This design originally targeted the
92 * Windows XP driver architecture and assumed that each screen would
93 * have a dedicated frame buffer with the command buffer following it,
94 * the whole being a "view". The host works out which screen a command
95 * buffer belongs to by checking whether it is in the first view, then
96 * whether it is in the second and so on. The first match wins. We
97 * cheat around this by making the first view be the managed memory
98 * plus the first command buffer, the second the same plus the second
99 * buffer and so on.
100 */
101 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
102 HGSMI_CH_VBVA, VBVA_INFO_VIEW);
103 if (!p)
104 return -ENOMEM;
105
106 p->view_index = vbox_crtc->crtc_id;
107 p->view_offset = vbox_crtc->fb_offset;
108 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
109 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
110 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
111
112 hgsmi_buffer_submit(vbox->guest_pool, p);
113 hgsmi_buffer_free(vbox->guest_pool, p);
114
115 return 0;
116 }
117
118 /*
119 * Try to map the layout of virtual screens to the range of the input device.
120 * Return true if we need to re-set the crtc modes due to screen offset
121 * changes.
122 */
vbox_set_up_input_mapping(struct vbox_private * vbox)123 static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
124 {
125 struct drm_crtc *crtci;
126 struct drm_connector *connectori;
127 struct drm_framebuffer *fb, *fb1 = NULL;
128 bool single_framebuffer = true;
129 bool old_single_framebuffer = vbox->single_framebuffer;
130 u16 width = 0, height = 0;
131
132 /*
133 * Are we using an X.Org-style single large frame-buffer for all crtcs?
134 * If so then screen layout can be deduced from the crtc offsets.
135 * Same fall-back if this is the fbdev frame-buffer.
136 */
137 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
138 fb = crtci->primary->state->fb;
139 if (!fb)
140 continue;
141
142 if (!fb1) {
143 fb1 = fb;
144 if (fb1 == vbox->ddev.fb_helper->fb)
145 break;
146 } else if (fb != fb1) {
147 single_framebuffer = false;
148 }
149 }
150 if (!fb1)
151 return false;
152
153 if (single_framebuffer) {
154 vbox->single_framebuffer = true;
155 vbox->input_mapping_width = fb1->width;
156 vbox->input_mapping_height = fb1->height;
157 return old_single_framebuffer != vbox->single_framebuffer;
158 }
159 /* Otherwise calculate the total span of all screens. */
160 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list,
161 head) {
162 struct vbox_connector *vbox_connector =
163 to_vbox_connector(connectori);
164 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
165
166 width = max_t(u16, width, vbox_crtc->x_hint +
167 vbox_connector->mode_hint.width);
168 height = max_t(u16, height, vbox_crtc->y_hint +
169 vbox_connector->mode_hint.height);
170 }
171
172 vbox->single_framebuffer = false;
173 vbox->input_mapping_width = width;
174 vbox->input_mapping_height = height;
175
176 return old_single_framebuffer != vbox->single_framebuffer;
177 }
178
vbox_crtc_set_base_and_mode(struct drm_crtc * crtc,struct drm_framebuffer * fb,int x,int y)179 static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc,
180 struct drm_framebuffer *fb,
181 int x, int y)
182 {
183 struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]);
184 struct vbox_private *vbox = to_vbox_dev(crtc->dev);
185 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
186 bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state);
187
188 mutex_lock(&vbox->hw_mutex);
189
190 if (crtc->state->enable) {
191 vbox_crtc->width = crtc->state->mode.hdisplay;
192 vbox_crtc->height = crtc->state->mode.vdisplay;
193 }
194
195 vbox_crtc->x = x;
196 vbox_crtc->y = y;
197 vbox_crtc->fb_offset = drm_gem_vram_offset(gbo);
198
199 /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */
200 if (needs_modeset && vbox_set_up_input_mapping(vbox)) {
201 struct drm_crtc *crtci;
202
203 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list,
204 head) {
205 if (crtci == crtc)
206 continue;
207 vbox_do_modeset(crtci);
208 }
209 }
210
211 vbox_set_view(crtc);
212 vbox_do_modeset(crtc);
213
214 if (needs_modeset)
215 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
216 vbox->input_mapping_width,
217 vbox->input_mapping_height);
218
219 mutex_unlock(&vbox->hw_mutex);
220 }
221
vbox_crtc_atomic_enable(struct drm_crtc * crtc,struct drm_atomic_commit * state)222 static void vbox_crtc_atomic_enable(struct drm_crtc *crtc,
223 struct drm_atomic_commit *state)
224 {
225 }
226
vbox_crtc_atomic_disable(struct drm_crtc * crtc,struct drm_atomic_commit * state)227 static void vbox_crtc_atomic_disable(struct drm_crtc *crtc,
228 struct drm_atomic_commit *state)
229 {
230 }
231
vbox_crtc_atomic_flush(struct drm_crtc * crtc,struct drm_atomic_commit * state)232 static void vbox_crtc_atomic_flush(struct drm_crtc *crtc,
233 struct drm_atomic_commit *state)
234 {
235 }
236
237 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
238 .atomic_enable = vbox_crtc_atomic_enable,
239 .atomic_disable = vbox_crtc_atomic_disable,
240 .atomic_flush = vbox_crtc_atomic_flush,
241 };
242
vbox_crtc_destroy(struct drm_crtc * crtc)243 static void vbox_crtc_destroy(struct drm_crtc *crtc)
244 {
245 drm_crtc_cleanup(crtc);
246 kfree(crtc);
247 }
248
249 static const struct drm_crtc_funcs vbox_crtc_funcs = {
250 .set_config = drm_atomic_helper_set_config,
251 .page_flip = drm_atomic_helper_page_flip,
252 /* .gamma_set = vbox_crtc_gamma_set, */
253 .destroy = vbox_crtc_destroy,
254 .reset = drm_atomic_helper_crtc_reset,
255 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
256 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
257 };
258
vbox_primary_atomic_check(struct drm_plane * plane,struct drm_atomic_commit * state)259 static int vbox_primary_atomic_check(struct drm_plane *plane,
260 struct drm_atomic_commit *state)
261 {
262 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
263 plane);
264 struct drm_crtc_state *crtc_state = NULL;
265
266 if (new_state->crtc) {
267 crtc_state = drm_atomic_get_new_crtc_state(state,
268 new_state->crtc);
269 if (WARN_ON(!crtc_state))
270 return -EINVAL;
271 }
272
273 return drm_atomic_helper_check_plane_state(new_state, crtc_state,
274 DRM_PLANE_NO_SCALING,
275 DRM_PLANE_NO_SCALING,
276 false, true);
277 }
278
vbox_primary_atomic_update(struct drm_plane * plane,struct drm_atomic_commit * state)279 static void vbox_primary_atomic_update(struct drm_plane *plane,
280 struct drm_atomic_commit *state)
281 {
282 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
283 plane);
284 struct drm_crtc *crtc = new_state->crtc;
285 struct drm_framebuffer *fb = new_state->fb;
286 struct vbox_private *vbox = to_vbox_dev(fb->dev);
287 struct drm_mode_rect *clips;
288 uint32_t num_clips, i;
289
290 vbox_crtc_set_base_and_mode(crtc, fb,
291 new_state->src_x >> 16,
292 new_state->src_y >> 16);
293
294 /* Send information about dirty rectangles to VBVA. */
295
296 clips = drm_plane_get_damage_clips(new_state);
297 num_clips = drm_plane_get_damage_clips_count(new_state);
298
299 if (!num_clips)
300 return;
301
302 mutex_lock(&vbox->hw_mutex);
303
304 for (i = 0; i < num_clips; ++i, ++clips) {
305 struct vbva_cmd_hdr cmd_hdr;
306 unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id;
307
308 cmd_hdr.x = (s16)clips->x1;
309 cmd_hdr.y = (s16)clips->y1;
310 cmd_hdr.w = (u16)clips->x2 - clips->x1;
311 cmd_hdr.h = (u16)clips->y2 - clips->y1;
312
313 if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id],
314 vbox->guest_pool))
315 continue;
316
317 vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool,
318 &cmd_hdr, sizeof(cmd_hdr));
319 vbva_buffer_end_update(&vbox->vbva_info[crtc_id]);
320 }
321
322 mutex_unlock(&vbox->hw_mutex);
323 }
324
vbox_primary_atomic_disable(struct drm_plane * plane,struct drm_atomic_commit * state)325 static void vbox_primary_atomic_disable(struct drm_plane *plane,
326 struct drm_atomic_commit *state)
327 {
328 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
329 plane);
330 struct drm_crtc *crtc = old_state->crtc;
331
332 /* vbox_do_modeset checks plane->state->fb and will disable if NULL */
333 vbox_crtc_set_base_and_mode(crtc, old_state->fb,
334 old_state->src_x >> 16,
335 old_state->src_y >> 16);
336 }
337
vbox_cursor_atomic_check(struct drm_plane * plane,struct drm_atomic_commit * state)338 static int vbox_cursor_atomic_check(struct drm_plane *plane,
339 struct drm_atomic_commit *state)
340 {
341 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
342 plane);
343 struct drm_crtc_state *crtc_state = NULL;
344 u32 width = new_state->crtc_w;
345 u32 height = new_state->crtc_h;
346 int ret;
347
348 if (new_state->crtc) {
349 crtc_state = drm_atomic_get_new_crtc_state(state,
350 new_state->crtc);
351 if (WARN_ON(!crtc_state))
352 return -EINVAL;
353 }
354
355 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
356 DRM_PLANE_NO_SCALING,
357 DRM_PLANE_NO_SCALING,
358 true, true);
359 if (ret)
360 return ret;
361
362 if (!new_state->fb)
363 return 0;
364
365 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
366 width == 0 || height == 0)
367 return -EINVAL;
368
369 return 0;
370 }
371
372 /*
373 * Copy the ARGB image and generate the mask, which is needed in case the host
374 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
375 * if the corresponding alpha value in the ARGB image is greater than 0xF0.
376 */
copy_cursor_image(u8 * src,u8 * dst,u32 width,u32 height,size_t mask_size)377 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
378 size_t mask_size)
379 {
380 size_t line_size = (width + 7) / 8;
381 u32 i, j;
382
383 memcpy(dst + mask_size, src, width * height * 4);
384 for (i = 0; i < height; ++i)
385 for (j = 0; j < width; ++j)
386 if (((u32 *)src)[i * width + j] > 0xf0000000)
387 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
388 }
389
vbox_cursor_atomic_update(struct drm_plane * plane,struct drm_atomic_commit * state)390 static void vbox_cursor_atomic_update(struct drm_plane *plane,
391 struct drm_atomic_commit *state)
392 {
393 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
394 plane);
395 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
396 plane);
397 struct vbox_private *vbox =
398 container_of(plane->dev, struct vbox_private, ddev);
399 struct vbox_crtc *vbox_crtc = to_vbox_crtc(new_state->crtc);
400 struct drm_framebuffer *fb = new_state->fb;
401 u32 width = new_state->crtc_w;
402 u32 height = new_state->crtc_h;
403 struct drm_shadow_plane_state *shadow_plane_state =
404 to_drm_shadow_plane_state(new_state);
405 struct iosys_map map = shadow_plane_state->data[0];
406 u8 *src = map.vaddr; /* TODO: Use mapping abstraction properly */
407 size_t data_size, mask_size;
408 u32 flags;
409
410 /*
411 * VirtualBox uses the host windowing system to draw the cursor so
412 * moves are a no-op, we only need to upload new cursor sprites.
413 */
414 if (fb == old_state->fb)
415 return;
416
417 mutex_lock(&vbox->hw_mutex);
418
419 vbox_crtc->cursor_enabled = true;
420
421 /*
422 * The mask must be calculated based on the alpha
423 * channel, one bit per ARGB word, and must be 32-bit
424 * padded.
425 */
426 mask_size = ((width + 7) / 8 * height + 3) & ~3;
427 data_size = width * height * 4 + mask_size;
428
429 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size);
430
431 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
432 VBOX_MOUSE_POINTER_ALPHA;
433 hgsmi_update_pointer_shape(vbox->guest_pool, flags,
434 min_t(u32, max(new_state->hotspot_x, 0), width),
435 min_t(u32, max(new_state->hotspot_y, 0), height),
436 width, height, vbox->cursor_data, data_size);
437
438 mutex_unlock(&vbox->hw_mutex);
439 }
440
vbox_cursor_atomic_disable(struct drm_plane * plane,struct drm_atomic_commit * state)441 static void vbox_cursor_atomic_disable(struct drm_plane *plane,
442 struct drm_atomic_commit *state)
443 {
444 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
445 plane);
446 struct vbox_private *vbox =
447 container_of(plane->dev, struct vbox_private, ddev);
448 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc);
449 bool cursor_enabled = false;
450 struct drm_crtc *crtci;
451
452 mutex_lock(&vbox->hw_mutex);
453
454 vbox_crtc->cursor_enabled = false;
455
456 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
457 if (to_vbox_crtc(crtci)->cursor_enabled)
458 cursor_enabled = true;
459 }
460
461 if (!cursor_enabled)
462 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
463 0, 0, NULL, 0);
464
465 mutex_unlock(&vbox->hw_mutex);
466 }
467
468 static const u32 vbox_cursor_plane_formats[] = {
469 DRM_FORMAT_ARGB8888,
470 };
471
472 static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = {
473 .atomic_check = vbox_cursor_atomic_check,
474 .atomic_update = vbox_cursor_atomic_update,
475 .atomic_disable = vbox_cursor_atomic_disable,
476 DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
477 };
478
479 static const struct drm_plane_funcs vbox_cursor_plane_funcs = {
480 .update_plane = drm_atomic_helper_update_plane,
481 .disable_plane = drm_atomic_helper_disable_plane,
482 .destroy = drm_plane_helper_destroy,
483 DRM_GEM_SHADOW_PLANE_FUNCS,
484 };
485
486 static const u32 vbox_primary_plane_formats[] = {
487 DRM_FORMAT_XRGB8888,
488 DRM_FORMAT_ARGB8888,
489 };
490
491 static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = {
492 .atomic_check = vbox_primary_atomic_check,
493 .atomic_update = vbox_primary_atomic_update,
494 .atomic_disable = vbox_primary_atomic_disable,
495 DRM_GEM_VRAM_PLANE_HELPER_FUNCS,
496 };
497
498 static const struct drm_plane_funcs vbox_primary_plane_funcs = {
499 .update_plane = drm_atomic_helper_update_plane,
500 .disable_plane = drm_atomic_helper_disable_plane,
501 .destroy = drm_plane_helper_destroy,
502 .reset = drm_atomic_helper_plane_reset,
503 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
504 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
505 };
506
vbox_create_plane(struct vbox_private * vbox,unsigned int possible_crtcs,enum drm_plane_type type)507 static struct drm_plane *vbox_create_plane(struct vbox_private *vbox,
508 unsigned int possible_crtcs,
509 enum drm_plane_type type)
510 {
511 const struct drm_plane_helper_funcs *helper_funcs = NULL;
512 const struct drm_plane_funcs *funcs;
513 struct drm_plane *plane;
514 const u32 *formats;
515 int num_formats;
516 int err;
517
518 if (type == DRM_PLANE_TYPE_PRIMARY) {
519 funcs = &vbox_primary_plane_funcs;
520 formats = vbox_primary_plane_formats;
521 helper_funcs = &vbox_primary_helper_funcs;
522 num_formats = ARRAY_SIZE(vbox_primary_plane_formats);
523 } else if (type == DRM_PLANE_TYPE_CURSOR) {
524 funcs = &vbox_cursor_plane_funcs;
525 formats = vbox_cursor_plane_formats;
526 helper_funcs = &vbox_cursor_helper_funcs;
527 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats);
528 } else {
529 return ERR_PTR(-EINVAL);
530 }
531
532 plane = kzalloc_obj(*plane);
533 if (!plane)
534 return ERR_PTR(-ENOMEM);
535
536 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs,
537 funcs, formats, num_formats,
538 NULL, type, NULL);
539 if (err)
540 goto free_plane;
541
542 drm_plane_helper_add(plane, helper_funcs);
543
544 drm_plane_create_blend_mode_property(plane,
545 BIT(DRM_MODE_BLEND_COVERAGE));
546
547 return plane;
548
549 free_plane:
550 kfree(plane);
551 return ERR_PTR(-EINVAL);
552 }
553
vbox_crtc_init(struct drm_device * dev,unsigned int i)554 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
555 {
556 struct vbox_private *vbox =
557 container_of(dev, struct vbox_private, ddev);
558 struct drm_plane *cursor = NULL;
559 struct vbox_crtc *vbox_crtc;
560 struct drm_plane *primary;
561 u32 caps = 0;
562 int ret;
563
564 ret = hgsmi_query_conf(vbox->guest_pool,
565 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
566 if (ret)
567 return ERR_PTR(ret);
568
569 vbox_crtc = kzalloc_obj(*vbox_crtc);
570 if (!vbox_crtc)
571 return ERR_PTR(-ENOMEM);
572
573 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY);
574 if (IS_ERR(primary)) {
575 ret = PTR_ERR(primary);
576 goto free_mem;
577 }
578
579 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
580 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR);
581 if (IS_ERR(cursor)) {
582 ret = PTR_ERR(cursor);
583 goto clean_primary;
584 }
585 } else {
586 DRM_WARN("VirtualBox host is too old, no cursor support\n");
587 }
588
589 vbox_crtc->crtc_id = i;
590
591 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor,
592 &vbox_crtc_funcs, NULL);
593 if (ret)
594 goto clean_cursor;
595
596 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
597 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
598
599 return vbox_crtc;
600
601 clean_cursor:
602 if (cursor) {
603 drm_plane_cleanup(cursor);
604 kfree(cursor);
605 }
606 clean_primary:
607 drm_plane_cleanup(primary);
608 kfree(primary);
609 free_mem:
610 kfree(vbox_crtc);
611 return ERR_PTR(ret);
612 }
613
vbox_encoder_destroy(struct drm_encoder * encoder)614 static void vbox_encoder_destroy(struct drm_encoder *encoder)
615 {
616 drm_encoder_cleanup(encoder);
617 kfree(encoder);
618 }
619
620 static const struct drm_encoder_funcs vbox_enc_funcs = {
621 .destroy = vbox_encoder_destroy,
622 };
623
vbox_encoder_init(struct drm_device * dev,unsigned int i)624 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
625 unsigned int i)
626 {
627 struct vbox_encoder *vbox_encoder;
628
629 vbox_encoder = kzalloc_obj(*vbox_encoder);
630 if (!vbox_encoder)
631 return NULL;
632
633 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
634 DRM_MODE_ENCODER_DAC, NULL);
635
636 vbox_encoder->base.possible_crtcs = 1 << i;
637 return &vbox_encoder->base;
638 }
639
640 /*
641 * Generate EDID data with a mode-unique serial number for the virtual
642 * monitor to try to persuade Unity that different modes correspond to
643 * different monitors and it should not try to force the same resolution on
644 * them.
645 */
vbox_set_edid(struct drm_connector * connector,int width,int height)646 static void vbox_set_edid(struct drm_connector *connector, int width,
647 int height)
648 {
649 enum { EDID_SIZE = 128 };
650 unsigned char edid[EDID_SIZE] = {
651 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
652 0x58, 0x58, /* manufacturer (VBX) */
653 0x00, 0x00, /* product code */
654 0x00, 0x00, 0x00, 0x00, /* serial number goes here */
655 0x01, /* week of manufacture */
656 0x00, /* year of manufacture */
657 0x01, 0x03, /* EDID version */
658 0x80, /* capabilities - digital */
659 0x00, /* horiz. res in cm, zero for projectors */
660 0x00, /* vert. res in cm */
661 0x78, /* display gamma (120 == 2.2). */
662 0xEE, /* features (standby, suspend, off, RGB, std */
663 /* colour space, preferred timing mode) */
664 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
665 /* chromaticity for standard colour space. */
666 0x00, 0x00, 0x00, /* no default timings */
667 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
668 0x01, 0x01,
669 0x01, 0x01, 0x01, 0x01, /* no standard timings */
670 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
671 0x02, 0x02,
672 /* descriptor block 1 goes below */
673 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
674 /* descriptor block 2, monitor ranges */
675 0x00, 0x00, 0x00, 0xFD, 0x00,
676 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
677 0x20, 0x20,
678 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
679 0x20,
680 /* descriptor block 3, monitor name */
681 0x00, 0x00, 0x00, 0xFC, 0x00,
682 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
683 '\n',
684 /* descriptor block 4: dummy data */
685 0x00, 0x00, 0x00, 0x10, 0x00,
686 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
687 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
688 0x20,
689 0x00, /* number of extensions */
690 0x00 /* checksum goes here */
691 };
692 int clock = (width + 6) * (height + 6) * 60 / 10000;
693 unsigned int i, sum = 0;
694
695 edid[12] = width & 0xff;
696 edid[13] = width >> 8;
697 edid[14] = height & 0xff;
698 edid[15] = height >> 8;
699 edid[54] = clock & 0xff;
700 edid[55] = clock >> 8;
701 edid[56] = width & 0xff;
702 edid[58] = (width >> 4) & 0xf0;
703 edid[59] = height & 0xff;
704 edid[61] = (height >> 4) & 0xf0;
705 for (i = 0; i < EDID_SIZE - 1; ++i)
706 sum += edid[i];
707 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
708 drm_connector_update_edid_property(connector, (struct edid *)edid);
709 }
710
vbox_get_modes(struct drm_connector * connector)711 static int vbox_get_modes(struct drm_connector *connector)
712 {
713 struct vbox_connector *vbox_connector = NULL;
714 struct drm_display_mode *mode = NULL;
715 struct vbox_private *vbox = NULL;
716 unsigned int num_modes = 0;
717 int preferred_width, preferred_height;
718
719 vbox_connector = to_vbox_connector(connector);
720 vbox = to_vbox_dev(connector->dev);
721
722 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
723 HOST_FLAGS_OFFSET);
724 if (vbox_connector->vbox_crtc->crtc_id == 0)
725 vbox_report_caps(vbox);
726
727 num_modes = drm_add_modes_noedid(connector, 2560, 1600);
728 preferred_width = vbox_connector->mode_hint.width ?
729 vbox_connector->mode_hint.width : 1024;
730 preferred_height = vbox_connector->mode_hint.height ?
731 vbox_connector->mode_hint.height : 768;
732 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
733 60, false, false, false);
734 if (mode) {
735 mode->type |= DRM_MODE_TYPE_PREFERRED;
736 drm_mode_probed_add(connector, mode);
737 ++num_modes;
738 }
739 vbox_set_edid(connector, preferred_width, preferred_height);
740
741 if (vbox_connector->vbox_crtc->x_hint != -1)
742 drm_object_property_set_value(&connector->base,
743 vbox->ddev.mode_config.suggested_x_property,
744 vbox_connector->vbox_crtc->x_hint);
745 else
746 drm_object_property_set_value(&connector->base,
747 vbox->ddev.mode_config.suggested_x_property, 0);
748
749 if (vbox_connector->vbox_crtc->y_hint != -1)
750 drm_object_property_set_value(&connector->base,
751 vbox->ddev.mode_config.suggested_y_property,
752 vbox_connector->vbox_crtc->y_hint);
753 else
754 drm_object_property_set_value(&connector->base,
755 vbox->ddev.mode_config.suggested_y_property, 0);
756
757 return num_modes;
758 }
759
vbox_connector_destroy(struct drm_connector * connector)760 static void vbox_connector_destroy(struct drm_connector *connector)
761 {
762 drm_connector_unregister(connector);
763 drm_connector_cleanup(connector);
764 kfree(connector);
765 }
766
767 static enum drm_connector_status
vbox_connector_detect(struct drm_connector * connector,bool force)768 vbox_connector_detect(struct drm_connector *connector, bool force)
769 {
770 struct vbox_connector *vbox_connector;
771
772 vbox_connector = to_vbox_connector(connector);
773
774 return vbox_connector->mode_hint.disconnected ?
775 connector_status_disconnected : connector_status_connected;
776 }
777
vbox_fill_modes(struct drm_connector * connector,u32 max_x,u32 max_y)778 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
779 u32 max_y)
780 {
781 struct vbox_connector *vbox_connector;
782 struct drm_device *dev;
783 struct drm_display_mode *mode, *iterator;
784
785 vbox_connector = to_vbox_connector(connector);
786 dev = vbox_connector->base.dev;
787 list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
788 list_del(&mode->head);
789 drm_mode_destroy(dev, mode);
790 }
791
792 return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
793 }
794
795 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
796 .get_modes = vbox_get_modes,
797 };
798
799 static const struct drm_connector_funcs vbox_connector_funcs = {
800 .detect = vbox_connector_detect,
801 .fill_modes = vbox_fill_modes,
802 .destroy = vbox_connector_destroy,
803 .reset = drm_atomic_helper_connector_reset,
804 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
805 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
806 };
807
vbox_connector_init(struct drm_device * dev,struct vbox_crtc * vbox_crtc,struct drm_encoder * encoder)808 static int vbox_connector_init(struct drm_device *dev,
809 struct vbox_crtc *vbox_crtc,
810 struct drm_encoder *encoder)
811 {
812 struct vbox_connector *vbox_connector;
813 struct drm_connector *connector;
814
815 vbox_connector = kzalloc_obj(*vbox_connector);
816 if (!vbox_connector)
817 return -ENOMEM;
818
819 connector = &vbox_connector->base;
820 vbox_connector->vbox_crtc = vbox_crtc;
821
822 drm_connector_init(dev, connector, &vbox_connector_funcs,
823 DRM_MODE_CONNECTOR_VGA);
824 drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
825
826 connector->interlace_allowed = 0;
827 connector->doublescan_allowed = 0;
828
829 drm_mode_create_suggested_offset_properties(dev);
830 drm_object_attach_property(&connector->base,
831 dev->mode_config.suggested_x_property, 0);
832 drm_object_attach_property(&connector->base,
833 dev->mode_config.suggested_y_property, 0);
834
835 drm_connector_attach_encoder(connector, encoder);
836
837 return 0;
838 }
839
840 static const struct drm_mode_config_funcs vbox_mode_funcs = {
841 .fb_create = drm_gem_fb_create_with_dirty,
842 .mode_valid = drm_vram_helper_mode_valid,
843 .atomic_check = drm_atomic_helper_check,
844 .atomic_commit = drm_atomic_helper_commit,
845 };
846
vbox_mode_init(struct vbox_private * vbox)847 int vbox_mode_init(struct vbox_private *vbox)
848 {
849 struct drm_device *dev = &vbox->ddev;
850 struct drm_encoder *encoder;
851 struct vbox_crtc *vbox_crtc;
852 unsigned int i;
853 int ret;
854
855 drm_mode_config_init(dev);
856
857 dev->mode_config.funcs = (void *)&vbox_mode_funcs;
858 dev->mode_config.min_width = 0;
859 dev->mode_config.min_height = 0;
860 dev->mode_config.preferred_depth = 24;
861 dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
862 dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
863
864 for (i = 0; i < vbox->num_crtcs; ++i) {
865 vbox_crtc = vbox_crtc_init(dev, i);
866 if (IS_ERR(vbox_crtc)) {
867 ret = PTR_ERR(vbox_crtc);
868 goto err_drm_mode_cleanup;
869 }
870 encoder = vbox_encoder_init(dev, i);
871 if (!encoder) {
872 ret = -ENOMEM;
873 goto err_drm_mode_cleanup;
874 }
875 ret = vbox_connector_init(dev, vbox_crtc, encoder);
876 if (ret)
877 goto err_drm_mode_cleanup;
878 }
879
880 drm_mode_config_reset(dev);
881 return 0;
882
883 err_drm_mode_cleanup:
884 drm_mode_config_cleanup(dev);
885 return ret;
886 }
887
vbox_mode_fini(struct vbox_private * vbox)888 void vbox_mode_fini(struct vbox_private *vbox)
889 {
890 drm_mode_config_cleanup(&vbox->ddev);
891 }
892