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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#include <linux/export.h>
13
14#include <drm/drm_atomic.h>
15#include <drm/drm_atomic_helper.h>
16#include <drm/drm_fourcc.h>
17#include <drm/drm_plane_helper.h>
18#include <drm/drm_probe_helper.h>
19#include <drm/drm_vblank.h>
20
21#include "hgsmi_channels.h"
22#include "vbox_drv.h"
23#include "vboxvideo.h"
24
25/*
26 * Set a graphics mode. Poke any required values into registers, do an HGSMI
27 * mode set and tell the host we support advanced graphics functions.
28 */
29static void vbox_do_modeset(struct drm_crtc *crtc)
30{
31 struct drm_framebuffer *fb = crtc->primary->state->fb;
32 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
33 struct vbox_private *vbox;
34 int width, height, bpp, pitch;
35 u16 flags;
36 s32 x_offset, y_offset;
37
38 vbox = crtc->dev->dev_private;
39 width = vbox_crtc->width ? vbox_crtc->width : 640;
40 height = vbox_crtc->height ? vbox_crtc->height : 480;
41 bpp = fb ? fb->format->cpp[0] * 8 : 32;
42 pitch = fb ? fb->pitches[0] : width * bpp / 8;
43 x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint;
44 y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint;
45
46 /*
47 * This is the old way of setting graphics modes. It assumed one screen
48 * and a frame-buffer at the start of video RAM. On older versions of
49 * VirtualBox, certain parts of the code still assume that the first
50 * screen is programmed this way, so try to fake it.
51 */
52 if (vbox_crtc->crtc_id == 0 && fb &&
53 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
54 vbox_crtc->fb_offset % (bpp / 8) == 0) {
55 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
56 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
57 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
58 vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp);
59 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
60 vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET,
61 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x);
62 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
63 vbox_crtc->fb_offset / pitch + vbox_crtc->y);
64 }
65
66 flags = VBVA_SCREEN_F_ACTIVE;
67 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK;
68 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
69 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
70 x_offset, y_offset,
71 vbox_crtc->x * bpp / 8 +
72 vbox_crtc->y * pitch,
73 pitch, width, height, bpp, flags);
74}
75
76static int vbox_set_view(struct drm_crtc *crtc)
77{
78 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
79 struct vbox_private *vbox = crtc->dev->dev_private;
80 struct vbva_infoview *p;
81
82 /*
83 * Tell the host about the view. This design originally targeted the
84 * Windows XP driver architecture and assumed that each screen would
85 * have a dedicated frame buffer with the command buffer following it,
86 * the whole being a "view". The host works out which screen a command
87 * buffer belongs to by checking whether it is in the first view, then
88 * whether it is in the second and so on. The first match wins. We
89 * cheat around this by making the first view be the managed memory
90 * plus the first command buffer, the second the same plus the second
91 * buffer and so on.
92 */
93 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
94 HGSMI_CH_VBVA, VBVA_INFO_VIEW);
95 if (!p)
96 return -ENOMEM;
97
98 p->view_index = vbox_crtc->crtc_id;
99 p->view_offset = vbox_crtc->fb_offset;
100 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
101 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
102 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
103
104 hgsmi_buffer_submit(vbox->guest_pool, p);
105 hgsmi_buffer_free(vbox->guest_pool, p);
106
107 return 0;
108}
109
110/*
111 * Try to map the layout of virtual screens to the range of the input device.
112 * Return true if we need to re-set the crtc modes due to screen offset
113 * changes.
114 */
115static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
116{
117 struct drm_crtc *crtci;
118 struct drm_connector *connectori;
119 struct drm_framebuffer *fb, *fb1 = NULL;
120 bool single_framebuffer = true;
121 bool old_single_framebuffer = vbox->single_framebuffer;
122 u16 width = 0, height = 0;
123
124 /*
125 * Are we using an X.Org-style single large frame-buffer for all crtcs?
126 * If so then screen layout can be deduced from the crtc offsets.
127 * Same fall-back if this is the fbdev frame-buffer.
128 */
129 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
130 fb = crtci->primary->state->fb;
131 if (!fb)
132 continue;
133
134 if (!fb1) {
135 fb1 = fb;
136 if (to_vbox_framebuffer(fb1) == &vbox->afb)
137 break;
138 } else if (fb != fb1) {
139 single_framebuffer = false;
140 }
141 }
142 if (!fb1)
143 return false;
144
145 if (single_framebuffer) {
146 vbox->single_framebuffer = true;
147 vbox->input_mapping_width = fb1->width;
148 vbox->input_mapping_height = fb1->height;
149 return old_single_framebuffer != vbox->single_framebuffer;
150 }
151 /* Otherwise calculate the total span of all screens. */
152 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list,
153 head) {
154 struct vbox_connector *vbox_connector =
155 to_vbox_connector(connectori);
156 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
157
158 width = max_t(u16, width, vbox_crtc->x_hint +
159 vbox_connector->mode_hint.width);
160 height = max_t(u16, height, vbox_crtc->y_hint +
161 vbox_connector->mode_hint.height);
162 }
163
164 vbox->single_framebuffer = false;
165 vbox->input_mapping_width = width;
166 vbox->input_mapping_height = height;
167
168 return old_single_framebuffer != vbox->single_framebuffer;
169}
170
171static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc,
172 struct drm_framebuffer *fb,
173 int x, int y)
174{
175 struct drm_gem_vram_object *gbo =
176 drm_gem_vram_of_gem(to_vbox_framebuffer(fb)->obj);
177 struct vbox_private *vbox = crtc->dev->dev_private;
178 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
179 bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state);
180
181 mutex_lock(&vbox->hw_mutex);
182
183 if (crtc->state->enable) {
184 vbox_crtc->width = crtc->state->mode.hdisplay;
185 vbox_crtc->height = crtc->state->mode.vdisplay;
186 }
187
188 vbox_crtc->x = x;
189 vbox_crtc->y = y;
190 vbox_crtc->fb_offset = drm_gem_vram_offset(gbo);
191
192 /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */
193 if (needs_modeset && vbox_set_up_input_mapping(vbox)) {
194 struct drm_crtc *crtci;
195
196 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list,
197 head) {
198 if (crtci == crtc)
199 continue;
200 vbox_do_modeset(crtci);
201 }
202 }
203
204 vbox_set_view(crtc);
205 vbox_do_modeset(crtc);
206
207 if (needs_modeset)
208 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
209 vbox->input_mapping_width,
210 vbox->input_mapping_height);
211
212 mutex_unlock(&vbox->hw_mutex);
213}
214
215static void vbox_crtc_atomic_enable(struct drm_crtc *crtc,
216 struct drm_crtc_state *old_crtc_state)
217{
218}
219
220static void vbox_crtc_atomic_disable(struct drm_crtc *crtc,
221 struct drm_crtc_state *old_crtc_state)
222{
223}
224
225static void vbox_crtc_atomic_flush(struct drm_crtc *crtc,
226 struct drm_crtc_state *old_crtc_state)
227{
228 struct drm_pending_vblank_event *event;
229 unsigned long flags;
230
231 if (crtc->state && crtc->state->event) {
232 event = crtc->state->event;
233 crtc->state->event = NULL;
234
235 spin_lock_irqsave(&crtc->dev->event_lock, flags);
236 drm_crtc_send_vblank_event(crtc, event);
237 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
238 }
239}
240
241static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
242 .atomic_enable = vbox_crtc_atomic_enable,
243 .atomic_disable = vbox_crtc_atomic_disable,
244 .atomic_flush = vbox_crtc_atomic_flush,
245};
246
247static void vbox_crtc_destroy(struct drm_crtc *crtc)
248{
249 drm_crtc_cleanup(crtc);
250 kfree(crtc);
251}
252
253static const struct drm_crtc_funcs vbox_crtc_funcs = {
254 .set_config = drm_atomic_helper_set_config,
255 .page_flip = drm_atomic_helper_page_flip,
256 /* .gamma_set = vbox_crtc_gamma_set, */
257 .destroy = vbox_crtc_destroy,
258 .reset = drm_atomic_helper_crtc_reset,
259 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
260 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
261};
262
263static int vbox_primary_atomic_check(struct drm_plane *plane,
264 struct drm_plane_state *new_state)
265{
266 struct drm_crtc_state *crtc_state = NULL;
267
268 if (new_state->crtc) {
269 crtc_state = drm_atomic_get_existing_crtc_state(
270 new_state->state, new_state->crtc);
271 if (WARN_ON(!crtc_state))
272 return -EINVAL;
273 }
274
275 return drm_atomic_helper_check_plane_state(new_state, crtc_state,
276 DRM_PLANE_HELPER_NO_SCALING,
277 DRM_PLANE_HELPER_NO_SCALING,
278 false, true);
279}
280
281static void vbox_primary_atomic_update(struct drm_plane *plane,
282 struct drm_plane_state *old_state)
283{
284 struct drm_crtc *crtc = plane->state->crtc;
285 struct drm_framebuffer *fb = plane->state->fb;
286
287 vbox_crtc_set_base_and_mode(crtc, fb,
288 plane->state->src_x >> 16,
289 plane->state->src_y >> 16);
290}
291
292static void vbox_primary_atomic_disable(struct drm_plane *plane,
293 struct drm_plane_state *old_state)
294{
295 struct drm_crtc *crtc = old_state->crtc;
296
297 /* vbox_do_modeset checks plane->state->fb and will disable if NULL */
298 vbox_crtc_set_base_and_mode(crtc, old_state->fb,
299 old_state->src_x >> 16,
300 old_state->src_y >> 16);
301}
302
303static int vbox_primary_prepare_fb(struct drm_plane *plane,
304 struct drm_plane_state *new_state)
305{
306 struct drm_gem_vram_object *gbo;
307 int ret;
308
309 if (!new_state->fb)
310 return 0;
311
312 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(new_state->fb)->obj);
313 ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM);
314 if (ret)
315 DRM_WARN("Error %d pinning new fb, out of video mem?\n", ret);
316
317 return ret;
318}
319
320static void vbox_primary_cleanup_fb(struct drm_plane *plane,
321 struct drm_plane_state *old_state)
322{
323 struct drm_gem_vram_object *gbo;
324
325 if (!old_state->fb)
326 return;
327
328 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(old_state->fb)->obj);
329 drm_gem_vram_unpin(gbo);
330}
331
332static int vbox_cursor_atomic_check(struct drm_plane *plane,
333 struct drm_plane_state *new_state)
334{
335 struct drm_crtc_state *crtc_state = NULL;
336 u32 width = new_state->crtc_w;
337 u32 height = new_state->crtc_h;
338 int ret;
339
340 if (new_state->crtc) {
341 crtc_state = drm_atomic_get_existing_crtc_state(
342 new_state->state, new_state->crtc);
343 if (WARN_ON(!crtc_state))
344 return -EINVAL;
345 }
346
347 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
348 DRM_PLANE_HELPER_NO_SCALING,
349 DRM_PLANE_HELPER_NO_SCALING,
350 true, true);
351 if (ret)
352 return ret;
353
354 if (!new_state->fb)
355 return 0;
356
357 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
358 width == 0 || height == 0)
359 return -EINVAL;
360
361 return 0;
362}
363
364/*
365 * Copy the ARGB image and generate the mask, which is needed in case the host
366 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
367 * if the corresponding alpha value in the ARGB image is greater than 0xF0.
368 */
369static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
370 size_t mask_size)
371{
372 size_t line_size = (width + 7) / 8;
373 u32 i, j;
374
375 memcpy(dst + mask_size, src, width * height * 4);
376 for (i = 0; i < height; ++i)
377 for (j = 0; j < width; ++j)
378 if (((u32 *)src)[i * width + j] > 0xf0000000)
379 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
380}
381
382static void vbox_cursor_atomic_update(struct drm_plane *plane,
383 struct drm_plane_state *old_state)
384{
385 struct vbox_private *vbox =
386 container_of(plane->dev, struct vbox_private, ddev);
387 struct vbox_crtc *vbox_crtc = to_vbox_crtc(plane->state->crtc);
388 struct drm_framebuffer *fb = plane->state->fb;
389 struct drm_gem_vram_object *gbo =
390 drm_gem_vram_of_gem(to_vbox_framebuffer(fb)->obj);
391 u32 width = plane->state->crtc_w;
392 u32 height = plane->state->crtc_h;
393 size_t data_size, mask_size;
394 u32 flags;
395 u8 *src;
396
397 /*
398 * VirtualBox uses the host windowing system to draw the cursor so
399 * moves are a no-op, we only need to upload new cursor sprites.
400 */
401 if (fb == old_state->fb)
402 return;
403
404 mutex_lock(&vbox->hw_mutex);
405
406 vbox_crtc->cursor_enabled = true;
407
408 /* pinning is done in prepare/cleanup framebuffer */
409 src = drm_gem_vram_kmap(gbo, true, NULL);
410 if (IS_ERR(src)) {
411 mutex_unlock(&vbox->hw_mutex);
412 DRM_WARN("Could not kmap cursor bo, skipping update\n");
413 return;
414 }
415
416 /*
417 * The mask must be calculated based on the alpha
418 * channel, one bit per ARGB word, and must be 32-bit
419 * padded.
420 */
421 mask_size = ((width + 7) / 8 * height + 3) & ~3;
422 data_size = width * height * 4 + mask_size;
423
424 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size);
425 drm_gem_vram_kunmap(gbo);
426
427 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
428 VBOX_MOUSE_POINTER_ALPHA;
429 hgsmi_update_pointer_shape(vbox->guest_pool, flags,
430 min_t(u32, max(fb->hot_x, 0), width),
431 min_t(u32, max(fb->hot_y, 0), height),
432 width, height, vbox->cursor_data, data_size);
433
434 mutex_unlock(&vbox->hw_mutex);
435}
436
437static void vbox_cursor_atomic_disable(struct drm_plane *plane,
438 struct drm_plane_state *old_state)
439{
440 struct vbox_private *vbox =
441 container_of(plane->dev, struct vbox_private, ddev);
442 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc);
443 bool cursor_enabled = false;
444 struct drm_crtc *crtci;
445
446 mutex_lock(&vbox->hw_mutex);
447
448 vbox_crtc->cursor_enabled = false;
449
450 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
451 if (to_vbox_crtc(crtci)->cursor_enabled)
452 cursor_enabled = true;
453 }
454
455 if (!cursor_enabled)
456 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
457 0, 0, NULL, 0);
458
459 mutex_unlock(&vbox->hw_mutex);
460}
461
462static int vbox_cursor_prepare_fb(struct drm_plane *plane,
463 struct drm_plane_state *new_state)
464{
465 struct drm_gem_vram_object *gbo;
466
467 if (!new_state->fb)
468 return 0;
469
470 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(new_state->fb)->obj);
471 return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_SYSTEM);
472}
473
474static void vbox_cursor_cleanup_fb(struct drm_plane *plane,
475 struct drm_plane_state *old_state)
476{
477 struct drm_gem_vram_object *gbo;
478
479 if (!plane->state->fb)
480 return;
481
482 gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(plane->state->fb)->obj);
483 drm_gem_vram_unpin(gbo);
484}
485
486static const u32 vbox_cursor_plane_formats[] = {
487 DRM_FORMAT_ARGB8888,
488};
489
490static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = {
491 .atomic_check = vbox_cursor_atomic_check,
492 .atomic_update = vbox_cursor_atomic_update,
493 .atomic_disable = vbox_cursor_atomic_disable,
494 .prepare_fb = vbox_cursor_prepare_fb,
495 .cleanup_fb = vbox_cursor_cleanup_fb,
496};
497
498static const struct drm_plane_funcs vbox_cursor_plane_funcs = {
499 .update_plane = drm_atomic_helper_update_plane,
500 .disable_plane = drm_atomic_helper_disable_plane,
501 .destroy = drm_primary_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
507static const u32 vbox_primary_plane_formats[] = {
508 DRM_FORMAT_XRGB8888,
509 DRM_FORMAT_ARGB8888,
510};
511
512static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = {
513 .atomic_check = vbox_primary_atomic_check,
514 .atomic_update = vbox_primary_atomic_update,
515 .atomic_disable = vbox_primary_atomic_disable,
516 .prepare_fb = vbox_primary_prepare_fb,
517 .cleanup_fb = vbox_primary_cleanup_fb,
518};
519
520static const struct drm_plane_funcs vbox_primary_plane_funcs = {
521 .update_plane = drm_atomic_helper_update_plane,
522 .disable_plane = drm_atomic_helper_disable_plane,
523 .destroy = drm_primary_helper_destroy,
524 .reset = drm_atomic_helper_plane_reset,
525 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
526 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
527};
528
529static struct drm_plane *vbox_create_plane(struct vbox_private *vbox,
530 unsigned int possible_crtcs,
531 enum drm_plane_type type)
532{
533 const struct drm_plane_helper_funcs *helper_funcs = NULL;
534 const struct drm_plane_funcs *funcs;
535 struct drm_plane *plane;
536 const u32 *formats;
537 int num_formats;
538 int err;
539
540 if (type == DRM_PLANE_TYPE_PRIMARY) {
541 funcs = &vbox_primary_plane_funcs;
542 formats = vbox_primary_plane_formats;
543 helper_funcs = &vbox_primary_helper_funcs;
544 num_formats = ARRAY_SIZE(vbox_primary_plane_formats);
545 } else if (type == DRM_PLANE_TYPE_CURSOR) {
546 funcs = &vbox_cursor_plane_funcs;
547 formats = vbox_cursor_plane_formats;
548 helper_funcs = &vbox_cursor_helper_funcs;
549 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats);
550 } else {
551 return ERR_PTR(-EINVAL);
552 }
553
554 plane = kzalloc(sizeof(*plane), GFP_KERNEL);
555 if (!plane)
556 return ERR_PTR(-ENOMEM);
557
558 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs,
559 funcs, formats, num_formats,
560 NULL, type, NULL);
561 if (err)
562 goto free_plane;
563
564 drm_plane_helper_add(plane, helper_funcs);
565
566 return plane;
567
568free_plane:
569 kfree(plane);
570 return ERR_PTR(-EINVAL);
571}
572
573static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
574{
575 struct vbox_private *vbox =
576 container_of(dev, struct vbox_private, ddev);
577 struct drm_plane *cursor = NULL;
578 struct vbox_crtc *vbox_crtc;
579 struct drm_plane *primary;
580 u32 caps = 0;
581 int ret;
582
583 ret = hgsmi_query_conf(vbox->guest_pool,
584 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
585 if (ret)
586 return ERR_PTR(ret);
587
588 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
589 if (!vbox_crtc)
590 return ERR_PTR(-ENOMEM);
591
592 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY);
593 if (IS_ERR(primary)) {
594 ret = PTR_ERR(primary);
595 goto free_mem;
596 }
597
598 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
599 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR);
600 if (IS_ERR(cursor)) {
601 ret = PTR_ERR(cursor);
602 goto clean_primary;
603 }
604 } else {
605 DRM_WARN("VirtualBox host is too old, no cursor support\n");
606 }
607
608 vbox_crtc->crtc_id = i;
609
610 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor,
611 &vbox_crtc_funcs, NULL);
612 if (ret)
613 goto clean_cursor;
614
615 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
616 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
617
618 return vbox_crtc;
619
620clean_cursor:
621 if (cursor) {
622 drm_plane_cleanup(cursor);
623 kfree(cursor);
624 }
625clean_primary:
626 drm_plane_cleanup(primary);
627 kfree(primary);
628free_mem:
629 kfree(vbox_crtc);
630 return ERR_PTR(ret);
631}
632
633static void vbox_encoder_destroy(struct drm_encoder *encoder)
634{
635 drm_encoder_cleanup(encoder);
636 kfree(encoder);
637}
638
639static const struct drm_encoder_funcs vbox_enc_funcs = {
640 .destroy = vbox_encoder_destroy,
641};
642
643static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
644 unsigned int i)
645{
646 struct vbox_encoder *vbox_encoder;
647
648 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
649 if (!vbox_encoder)
650 return NULL;
651
652 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
653 DRM_MODE_ENCODER_DAC, NULL);
654
655 vbox_encoder->base.possible_crtcs = 1 << i;
656 return &vbox_encoder->base;
657}
658
659/*
660 * Generate EDID data with a mode-unique serial number for the virtual
661 * monitor to try to persuade Unity that different modes correspond to
662 * different monitors and it should not try to force the same resolution on
663 * them.
664 */
665static void vbox_set_edid(struct drm_connector *connector, int width,
666 int height)
667{
668 enum { EDID_SIZE = 128 };
669 unsigned char edid[EDID_SIZE] = {
670 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
671 0x58, 0x58, /* manufacturer (VBX) */
672 0x00, 0x00, /* product code */
673 0x00, 0x00, 0x00, 0x00, /* serial number goes here */
674 0x01, /* week of manufacture */
675 0x00, /* year of manufacture */
676 0x01, 0x03, /* EDID version */
677 0x80, /* capabilities - digital */
678 0x00, /* horiz. res in cm, zero for projectors */
679 0x00, /* vert. res in cm */
680 0x78, /* display gamma (120 == 2.2). */
681 0xEE, /* features (standby, suspend, off, RGB, std */
682 /* colour space, preferred timing mode) */
683 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
684 /* chromaticity for standard colour space. */
685 0x00, 0x00, 0x00, /* no default timings */
686 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
687 0x01, 0x01,
688 0x01, 0x01, 0x01, 0x01, /* no standard timings */
689 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
690 0x02, 0x02,
691 /* descriptor block 1 goes below */
692 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
693 /* descriptor block 2, monitor ranges */
694 0x00, 0x00, 0x00, 0xFD, 0x00,
695 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
696 0x20, 0x20,
697 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
698 0x20,
699 /* descriptor block 3, monitor name */
700 0x00, 0x00, 0x00, 0xFC, 0x00,
701 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
702 '\n',
703 /* descriptor block 4: dummy data */
704 0x00, 0x00, 0x00, 0x10, 0x00,
705 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
706 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
707 0x20,
708 0x00, /* number of extensions */
709 0x00 /* checksum goes here */
710 };
711 int clock = (width + 6) * (height + 6) * 60 / 10000;
712 unsigned int i, sum = 0;
713
714 edid[12] = width & 0xff;
715 edid[13] = width >> 8;
716 edid[14] = height & 0xff;
717 edid[15] = height >> 8;
718 edid[54] = clock & 0xff;
719 edid[55] = clock >> 8;
720 edid[56] = width & 0xff;
721 edid[58] = (width >> 4) & 0xf0;
722 edid[59] = height & 0xff;
723 edid[61] = (height >> 4) & 0xf0;
724 for (i = 0; i < EDID_SIZE - 1; ++i)
725 sum += edid[i];
726 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
727 drm_connector_update_edid_property(connector, (struct edid *)edid);
728}
729
730static int vbox_get_modes(struct drm_connector *connector)
731{
732 struct vbox_connector *vbox_connector = NULL;
733 struct drm_display_mode *mode = NULL;
734 struct vbox_private *vbox = NULL;
735 unsigned int num_modes = 0;
736 int preferred_width, preferred_height;
737
738 vbox_connector = to_vbox_connector(connector);
739 vbox = connector->dev->dev_private;
740
741 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
742 HOST_FLAGS_OFFSET);
743 if (vbox_connector->vbox_crtc->crtc_id == 0)
744 vbox_report_caps(vbox);
745
746 num_modes = drm_add_modes_noedid(connector, 2560, 1600);
747 preferred_width = vbox_connector->mode_hint.width ?
748 vbox_connector->mode_hint.width : 1024;
749 preferred_height = vbox_connector->mode_hint.height ?
750 vbox_connector->mode_hint.height : 768;
751 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
752 60, false, false, false);
753 if (mode) {
754 mode->type |= DRM_MODE_TYPE_PREFERRED;
755 drm_mode_probed_add(connector, mode);
756 ++num_modes;
757 }
758 vbox_set_edid(connector, preferred_width, preferred_height);
759
760 if (vbox_connector->vbox_crtc->x_hint != -1)
761 drm_object_property_set_value(&connector->base,
762 vbox->ddev.mode_config.suggested_x_property,
763 vbox_connector->vbox_crtc->x_hint);
764 else
765 drm_object_property_set_value(&connector->base,
766 vbox->ddev.mode_config.suggested_x_property, 0);
767
768 if (vbox_connector->vbox_crtc->y_hint != -1)
769 drm_object_property_set_value(&connector->base,
770 vbox->ddev.mode_config.suggested_y_property,
771 vbox_connector->vbox_crtc->y_hint);
772 else
773 drm_object_property_set_value(&connector->base,
774 vbox->ddev.mode_config.suggested_y_property, 0);
775
776 return num_modes;
777}
778
779static void vbox_connector_destroy(struct drm_connector *connector)
780{
781 drm_connector_unregister(connector);
782 drm_connector_cleanup(connector);
783 kfree(connector);
784}
785
786static enum drm_connector_status
787vbox_connector_detect(struct drm_connector *connector, bool force)
788{
789 struct vbox_connector *vbox_connector;
790
791 vbox_connector = to_vbox_connector(connector);
792
793 return vbox_connector->mode_hint.disconnected ?
794 connector_status_disconnected : connector_status_connected;
795}
796
797static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
798 u32 max_y)
799{
800 struct vbox_connector *vbox_connector;
801 struct drm_device *dev;
802 struct drm_display_mode *mode, *iterator;
803
804 vbox_connector = to_vbox_connector(connector);
805 dev = vbox_connector->base.dev;
806 list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
807 list_del(&mode->head);
808 drm_mode_destroy(dev, mode);
809 }
810
811 return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
812}
813
814static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
815 .get_modes = vbox_get_modes,
816};
817
818static const struct drm_connector_funcs vbox_connector_funcs = {
819 .detect = vbox_connector_detect,
820 .fill_modes = vbox_fill_modes,
821 .destroy = vbox_connector_destroy,
822 .reset = drm_atomic_helper_connector_reset,
823 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
824 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
825};
826
827static int vbox_connector_init(struct drm_device *dev,
828 struct vbox_crtc *vbox_crtc,
829 struct drm_encoder *encoder)
830{
831 struct vbox_connector *vbox_connector;
832 struct drm_connector *connector;
833
834 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
835 if (!vbox_connector)
836 return -ENOMEM;
837
838 connector = &vbox_connector->base;
839 vbox_connector->vbox_crtc = vbox_crtc;
840
841 drm_connector_init(dev, connector, &vbox_connector_funcs,
842 DRM_MODE_CONNECTOR_VGA);
843 drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
844
845 connector->interlace_allowed = 0;
846 connector->doublescan_allowed = 0;
847
848 drm_mode_create_suggested_offset_properties(dev);
849 drm_object_attach_property(&connector->base,
850 dev->mode_config.suggested_x_property, 0);
851 drm_object_attach_property(&connector->base,
852 dev->mode_config.suggested_y_property, 0);
853
854 drm_connector_attach_encoder(connector, encoder);
855
856 return 0;
857}
858
859static struct drm_framebuffer *vbox_user_framebuffer_create(
860 struct drm_device *dev,
861 struct drm_file *filp,
862 const struct drm_mode_fb_cmd2 *mode_cmd)
863{
864 struct vbox_private *vbox =
865 container_of(dev, struct vbox_private, ddev);
866 struct drm_gem_object *obj;
867 struct vbox_framebuffer *vbox_fb;
868 int ret = -ENOMEM;
869
870 obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]);
871 if (!obj)
872 return ERR_PTR(-ENOENT);
873
874 vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL);
875 if (!vbox_fb)
876 goto err_unref_obj;
877
878 ret = vbox_framebuffer_init(vbox, vbox_fb, mode_cmd, obj);
879 if (ret)
880 goto err_free_vbox_fb;
881
882 return &vbox_fb->base;
883
884err_free_vbox_fb:
885 kfree(vbox_fb);
886err_unref_obj:
887 drm_gem_object_put_unlocked(obj);
888 return ERR_PTR(ret);
889}
890
891static const struct drm_mode_config_funcs vbox_mode_funcs = {
892 .fb_create = vbox_user_framebuffer_create,
893 .atomic_check = drm_atomic_helper_check,
894 .atomic_commit = drm_atomic_helper_commit,
895};
896
897int vbox_mode_init(struct vbox_private *vbox)
898{
899 struct drm_device *dev = &vbox->ddev;
900 struct drm_encoder *encoder;
901 struct vbox_crtc *vbox_crtc;
902 unsigned int i;
903 int ret;
904
905 drm_mode_config_init(dev);
906
907 dev->mode_config.funcs = (void *)&vbox_mode_funcs;
908 dev->mode_config.min_width = 0;
909 dev->mode_config.min_height = 0;
910 dev->mode_config.preferred_depth = 24;
911 dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
912 dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
913
914 for (i = 0; i < vbox->num_crtcs; ++i) {
915 vbox_crtc = vbox_crtc_init(dev, i);
916 if (IS_ERR(vbox_crtc)) {
917 ret = PTR_ERR(vbox_crtc);
918 goto err_drm_mode_cleanup;
919 }
920 encoder = vbox_encoder_init(dev, i);
921 if (!encoder) {
922 ret = -ENOMEM;
923 goto err_drm_mode_cleanup;
924 }
925 ret = vbox_connector_init(dev, vbox_crtc, encoder);
926 if (ret)
927 goto err_drm_mode_cleanup;
928 }
929
930 drm_mode_config_reset(dev);
931 return 0;
932
933err_drm_mode_cleanup:
934 drm_mode_config_cleanup(dev);
935 return ret;
936}
937
938void vbox_mode_fini(struct vbox_private *vbox)
939{
940 drm_mode_config_cleanup(&vbox->ddev);
941}