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