1 // SPDX-License-Identifier: MIT
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>
13 #include <linux/dma-buf-map.h>
14 #include <linux/export.h>
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_fb_helper.h>
19 #include <drm/drm_fourcc.h>
20 #include <drm/drm_gem_atomic_helper.h>
21 #include <drm/drm_gem_framebuffer_helper.h>
22 #include <drm/drm_plane_helper.h>
23 #include <drm/drm_probe_helper.h>
25 #include "hgsmi_channels.h"
27 #include "vboxvideo.h"
30 * Set a graphics mode. Poke any required values into registers, do an HGSMI
31 * mode set and tell the host we support advanced graphics functions.
33 static void vbox_do_modeset(struct drm_crtc *crtc)
35 struct drm_framebuffer *fb = crtc->primary->state->fb;
36 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
37 struct vbox_private *vbox;
38 int width, height, bpp, pitch;
40 s32 x_offset, y_offset;
42 vbox = to_vbox_dev(crtc->dev);
43 width = vbox_crtc->width ? vbox_crtc->width : 640;
44 height = vbox_crtc->height ? vbox_crtc->height : 480;
45 bpp = fb ? fb->format->cpp[0] * 8 : 32;
46 pitch = fb ? fb->pitches[0] : width * bpp / 8;
47 x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint;
48 y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint;
51 * This is the old way of setting graphics modes. It assumed one screen
52 * and a frame-buffer at the start of video RAM. On older versions of
53 * VirtualBox, certain parts of the code still assume that the first
54 * screen is programmed this way, so try to fake it.
56 if (vbox_crtc->crtc_id == 0 && fb &&
57 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
58 vbox_crtc->fb_offset % (bpp / 8) == 0) {
59 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
60 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
61 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
62 vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp);
63 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
64 vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET,
65 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x);
66 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
67 vbox_crtc->fb_offset / pitch + vbox_crtc->y);
70 flags = VBVA_SCREEN_F_ACTIVE;
71 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK;
72 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
73 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
75 vbox_crtc->x * bpp / 8 +
77 pitch, width, height, bpp, flags);
80 static int vbox_set_view(struct drm_crtc *crtc)
82 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
83 struct vbox_private *vbox = to_vbox_dev(crtc->dev);
84 struct vbva_infoview *p;
87 * Tell the host about the view. This design originally targeted the
88 * Windows XP driver architecture and assumed that each screen would
89 * have a dedicated frame buffer with the command buffer following it,
90 * the whole being a "view". The host works out which screen a command
91 * buffer belongs to by checking whether it is in the first view, then
92 * whether it is in the second and so on. The first match wins. We
93 * cheat around this by making the first view be the managed memory
94 * plus the first command buffer, the second the same plus the second
97 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
98 HGSMI_CH_VBVA, VBVA_INFO_VIEW);
102 p->view_index = vbox_crtc->crtc_id;
103 p->view_offset = vbox_crtc->fb_offset;
104 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
105 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
106 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
108 hgsmi_buffer_submit(vbox->guest_pool, p);
109 hgsmi_buffer_free(vbox->guest_pool, p);
115 * Try to map the layout of virtual screens to the range of the input device.
116 * Return true if we need to re-set the crtc modes due to screen offset
119 static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
121 struct drm_crtc *crtci;
122 struct drm_connector *connectori;
123 struct drm_framebuffer *fb, *fb1 = NULL;
124 bool single_framebuffer = true;
125 bool old_single_framebuffer = vbox->single_framebuffer;
126 u16 width = 0, height = 0;
129 * Are we using an X.Org-style single large frame-buffer for all crtcs?
130 * If so then screen layout can be deduced from the crtc offsets.
131 * Same fall-back if this is the fbdev frame-buffer.
133 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
134 fb = crtci->primary->state->fb;
140 if (fb1 == vbox->ddev.fb_helper->fb)
142 } else if (fb != fb1) {
143 single_framebuffer = false;
149 if (single_framebuffer) {
150 vbox->single_framebuffer = true;
151 vbox->input_mapping_width = fb1->width;
152 vbox->input_mapping_height = fb1->height;
153 return old_single_framebuffer != vbox->single_framebuffer;
155 /* Otherwise calculate the total span of all screens. */
156 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list,
158 struct vbox_connector *vbox_connector =
159 to_vbox_connector(connectori);
160 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
162 width = max_t(u16, width, vbox_crtc->x_hint +
163 vbox_connector->mode_hint.width);
164 height = max_t(u16, height, vbox_crtc->y_hint +
165 vbox_connector->mode_hint.height);
168 vbox->single_framebuffer = false;
169 vbox->input_mapping_width = width;
170 vbox->input_mapping_height = height;
172 return old_single_framebuffer != vbox->single_framebuffer;
175 static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc,
176 struct drm_framebuffer *fb,
179 struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]);
180 struct vbox_private *vbox = to_vbox_dev(crtc->dev);
181 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
182 bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state);
184 mutex_lock(&vbox->hw_mutex);
186 if (crtc->state->enable) {
187 vbox_crtc->width = crtc->state->mode.hdisplay;
188 vbox_crtc->height = crtc->state->mode.vdisplay;
193 vbox_crtc->fb_offset = drm_gem_vram_offset(gbo);
195 /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */
196 if (needs_modeset && vbox_set_up_input_mapping(vbox)) {
197 struct drm_crtc *crtci;
199 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list,
203 vbox_do_modeset(crtci);
208 vbox_do_modeset(crtc);
211 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
212 vbox->input_mapping_width,
213 vbox->input_mapping_height);
215 mutex_unlock(&vbox->hw_mutex);
218 static void vbox_crtc_atomic_enable(struct drm_crtc *crtc,
219 struct drm_atomic_state *state)
223 static void vbox_crtc_atomic_disable(struct drm_crtc *crtc,
224 struct drm_atomic_state *state)
228 static void vbox_crtc_atomic_flush(struct drm_crtc *crtc,
229 struct drm_atomic_state *state)
233 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
234 .atomic_enable = vbox_crtc_atomic_enable,
235 .atomic_disable = vbox_crtc_atomic_disable,
236 .atomic_flush = vbox_crtc_atomic_flush,
239 static void vbox_crtc_destroy(struct drm_crtc *crtc)
241 drm_crtc_cleanup(crtc);
245 static const struct drm_crtc_funcs vbox_crtc_funcs = {
246 .set_config = drm_atomic_helper_set_config,
247 .page_flip = drm_atomic_helper_page_flip,
248 /* .gamma_set = vbox_crtc_gamma_set, */
249 .destroy = vbox_crtc_destroy,
250 .reset = drm_atomic_helper_crtc_reset,
251 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
252 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
255 static int vbox_primary_atomic_check(struct drm_plane *plane,
256 struct drm_atomic_state *state)
258 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
260 struct drm_crtc_state *crtc_state = NULL;
262 if (new_state->crtc) {
263 crtc_state = drm_atomic_get_existing_crtc_state(state,
265 if (WARN_ON(!crtc_state))
269 return drm_atomic_helper_check_plane_state(new_state, crtc_state,
270 DRM_PLANE_HELPER_NO_SCALING,
271 DRM_PLANE_HELPER_NO_SCALING,
275 static void vbox_primary_atomic_update(struct drm_plane *plane,
276 struct drm_atomic_state *state)
278 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
280 struct drm_crtc *crtc = new_state->crtc;
281 struct drm_framebuffer *fb = new_state->fb;
282 struct vbox_private *vbox = to_vbox_dev(fb->dev);
283 struct drm_mode_rect *clips;
284 uint32_t num_clips, i;
286 vbox_crtc_set_base_and_mode(crtc, fb,
287 new_state->src_x >> 16,
288 new_state->src_y >> 16);
290 /* Send information about dirty rectangles to VBVA. */
292 clips = drm_plane_get_damage_clips(new_state);
293 num_clips = drm_plane_get_damage_clips_count(new_state);
298 mutex_lock(&vbox->hw_mutex);
300 for (i = 0; i < num_clips; ++i, ++clips) {
301 struct vbva_cmd_hdr cmd_hdr;
302 unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id;
304 cmd_hdr.x = (s16)clips->x1;
305 cmd_hdr.y = (s16)clips->y1;
306 cmd_hdr.w = (u16)clips->x2 - clips->x1;
307 cmd_hdr.h = (u16)clips->y2 - clips->y1;
309 if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id],
313 vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool,
314 &cmd_hdr, sizeof(cmd_hdr));
315 vbva_buffer_end_update(&vbox->vbva_info[crtc_id]);
318 mutex_unlock(&vbox->hw_mutex);
321 static void vbox_primary_atomic_disable(struct drm_plane *plane,
322 struct drm_atomic_state *state)
324 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
326 struct drm_crtc *crtc = old_state->crtc;
328 /* vbox_do_modeset checks plane->state->fb and will disable if NULL */
329 vbox_crtc_set_base_and_mode(crtc, old_state->fb,
330 old_state->src_x >> 16,
331 old_state->src_y >> 16);
334 static int vbox_cursor_atomic_check(struct drm_plane *plane,
335 struct drm_atomic_state *state)
337 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
339 struct drm_crtc_state *crtc_state = NULL;
340 u32 width = new_state->crtc_w;
341 u32 height = new_state->crtc_h;
344 if (new_state->crtc) {
345 crtc_state = drm_atomic_get_existing_crtc_state(state,
347 if (WARN_ON(!crtc_state))
351 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
352 DRM_PLANE_HELPER_NO_SCALING,
353 DRM_PLANE_HELPER_NO_SCALING,
361 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
362 width == 0 || height == 0)
369 * Copy the ARGB image and generate the mask, which is needed in case the host
370 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
371 * if the corresponding alpha value in the ARGB image is greater than 0xF0.
373 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
376 size_t line_size = (width + 7) / 8;
379 memcpy(dst + mask_size, src, width * height * 4);
380 for (i = 0; i < height; ++i)
381 for (j = 0; j < width; ++j)
382 if (((u32 *)src)[i * width + j] > 0xf0000000)
383 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
386 static void vbox_cursor_atomic_update(struct drm_plane *plane,
387 struct drm_atomic_state *state)
389 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
391 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
393 struct vbox_private *vbox =
394 container_of(plane->dev, struct vbox_private, ddev);
395 struct vbox_crtc *vbox_crtc = to_vbox_crtc(new_state->crtc);
396 struct drm_framebuffer *fb = new_state->fb;
397 u32 width = new_state->crtc_w;
398 u32 height = new_state->crtc_h;
399 struct drm_shadow_plane_state *shadow_plane_state =
400 to_drm_shadow_plane_state(new_state);
401 struct dma_buf_map map = shadow_plane_state->map[0];
402 u8 *src = map.vaddr; /* TODO: Use mapping abstraction properly */
403 size_t data_size, mask_size;
407 * VirtualBox uses the host windowing system to draw the cursor so
408 * moves are a no-op, we only need to upload new cursor sprites.
410 if (fb == old_state->fb)
413 mutex_lock(&vbox->hw_mutex);
415 vbox_crtc->cursor_enabled = true;
418 * The mask must be calculated based on the alpha
419 * channel, one bit per ARGB word, and must be 32-bit
422 mask_size = ((width + 7) / 8 * height + 3) & ~3;
423 data_size = width * height * 4 + mask_size;
425 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size);
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);
434 mutex_unlock(&vbox->hw_mutex);
437 static void vbox_cursor_atomic_disable(struct drm_plane *plane,
438 struct drm_atomic_state *state)
440 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
442 struct vbox_private *vbox =
443 container_of(plane->dev, struct vbox_private, ddev);
444 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc);
445 bool cursor_enabled = false;
446 struct drm_crtc *crtci;
448 mutex_lock(&vbox->hw_mutex);
450 vbox_crtc->cursor_enabled = false;
452 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
453 if (to_vbox_crtc(crtci)->cursor_enabled)
454 cursor_enabled = true;
458 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
461 mutex_unlock(&vbox->hw_mutex);
464 static const u32 vbox_cursor_plane_formats[] = {
468 static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = {
469 .atomic_check = vbox_cursor_atomic_check,
470 .atomic_update = vbox_cursor_atomic_update,
471 .atomic_disable = vbox_cursor_atomic_disable,
472 DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
475 static const struct drm_plane_funcs vbox_cursor_plane_funcs = {
476 .update_plane = drm_atomic_helper_update_plane,
477 .disable_plane = drm_atomic_helper_disable_plane,
478 .destroy = drm_primary_helper_destroy,
479 DRM_GEM_SHADOW_PLANE_FUNCS,
482 static const u32 vbox_primary_plane_formats[] = {
487 static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = {
488 .atomic_check = vbox_primary_atomic_check,
489 .atomic_update = vbox_primary_atomic_update,
490 .atomic_disable = vbox_primary_atomic_disable,
491 .prepare_fb = drm_gem_vram_plane_helper_prepare_fb,
492 .cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb,
495 static const struct drm_plane_funcs vbox_primary_plane_funcs = {
496 .update_plane = drm_atomic_helper_update_plane,
497 .disable_plane = drm_atomic_helper_disable_plane,
498 .destroy = drm_primary_helper_destroy,
499 .reset = drm_atomic_helper_plane_reset,
500 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
501 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
504 static struct drm_plane *vbox_create_plane(struct vbox_private *vbox,
505 unsigned int possible_crtcs,
506 enum drm_plane_type type)
508 const struct drm_plane_helper_funcs *helper_funcs = NULL;
509 const struct drm_plane_funcs *funcs;
510 struct drm_plane *plane;
515 if (type == DRM_PLANE_TYPE_PRIMARY) {
516 funcs = &vbox_primary_plane_funcs;
517 formats = vbox_primary_plane_formats;
518 helper_funcs = &vbox_primary_helper_funcs;
519 num_formats = ARRAY_SIZE(vbox_primary_plane_formats);
520 } else if (type == DRM_PLANE_TYPE_CURSOR) {
521 funcs = &vbox_cursor_plane_funcs;
522 formats = vbox_cursor_plane_formats;
523 helper_funcs = &vbox_cursor_helper_funcs;
524 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats);
526 return ERR_PTR(-EINVAL);
529 plane = kzalloc(sizeof(*plane), GFP_KERNEL);
531 return ERR_PTR(-ENOMEM);
533 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs,
534 funcs, formats, num_formats,
539 drm_plane_helper_add(plane, helper_funcs);
545 return ERR_PTR(-EINVAL);
548 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
550 struct vbox_private *vbox =
551 container_of(dev, struct vbox_private, ddev);
552 struct drm_plane *cursor = NULL;
553 struct vbox_crtc *vbox_crtc;
554 struct drm_plane *primary;
558 ret = hgsmi_query_conf(vbox->guest_pool,
559 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
563 vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
565 return ERR_PTR(-ENOMEM);
567 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY);
568 if (IS_ERR(primary)) {
569 ret = PTR_ERR(primary);
573 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
574 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR);
575 if (IS_ERR(cursor)) {
576 ret = PTR_ERR(cursor);
580 DRM_WARN("VirtualBox host is too old, no cursor support\n");
583 vbox_crtc->crtc_id = i;
585 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor,
586 &vbox_crtc_funcs, NULL);
590 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
591 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
597 drm_plane_cleanup(cursor);
601 drm_plane_cleanup(primary);
608 static void vbox_encoder_destroy(struct drm_encoder *encoder)
610 drm_encoder_cleanup(encoder);
614 static const struct drm_encoder_funcs vbox_enc_funcs = {
615 .destroy = vbox_encoder_destroy,
618 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
621 struct vbox_encoder *vbox_encoder;
623 vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
627 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
628 DRM_MODE_ENCODER_DAC, NULL);
630 vbox_encoder->base.possible_crtcs = 1 << i;
631 return &vbox_encoder->base;
635 * Generate EDID data with a mode-unique serial number for the virtual
636 * monitor to try to persuade Unity that different modes correspond to
637 * different monitors and it should not try to force the same resolution on
640 static void vbox_set_edid(struct drm_connector *connector, int width,
643 enum { EDID_SIZE = 128 };
644 unsigned char edid[EDID_SIZE] = {
645 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
646 0x58, 0x58, /* manufacturer (VBX) */
647 0x00, 0x00, /* product code */
648 0x00, 0x00, 0x00, 0x00, /* serial number goes here */
649 0x01, /* week of manufacture */
650 0x00, /* year of manufacture */
651 0x01, 0x03, /* EDID version */
652 0x80, /* capabilities - digital */
653 0x00, /* horiz. res in cm, zero for projectors */
654 0x00, /* vert. res in cm */
655 0x78, /* display gamma (120 == 2.2). */
656 0xEE, /* features (standby, suspend, off, RGB, std */
657 /* colour space, preferred timing mode) */
658 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
659 /* chromaticity for standard colour space. */
660 0x00, 0x00, 0x00, /* no default timings */
661 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
663 0x01, 0x01, 0x01, 0x01, /* no standard timings */
664 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
666 /* descriptor block 1 goes below */
667 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
668 /* descriptor block 2, monitor ranges */
669 0x00, 0x00, 0x00, 0xFD, 0x00,
670 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
672 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
674 /* descriptor block 3, monitor name */
675 0x00, 0x00, 0x00, 0xFC, 0x00,
676 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
678 /* descriptor block 4: dummy data */
679 0x00, 0x00, 0x00, 0x10, 0x00,
680 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
681 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
683 0x00, /* number of extensions */
684 0x00 /* checksum goes here */
686 int clock = (width + 6) * (height + 6) * 60 / 10000;
687 unsigned int i, sum = 0;
689 edid[12] = width & 0xff;
690 edid[13] = width >> 8;
691 edid[14] = height & 0xff;
692 edid[15] = height >> 8;
693 edid[54] = clock & 0xff;
694 edid[55] = clock >> 8;
695 edid[56] = width & 0xff;
696 edid[58] = (width >> 4) & 0xf0;
697 edid[59] = height & 0xff;
698 edid[61] = (height >> 4) & 0xf0;
699 for (i = 0; i < EDID_SIZE - 1; ++i)
701 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
702 drm_connector_update_edid_property(connector, (struct edid *)edid);
705 static int vbox_get_modes(struct drm_connector *connector)
707 struct vbox_connector *vbox_connector = NULL;
708 struct drm_display_mode *mode = NULL;
709 struct vbox_private *vbox = NULL;
710 unsigned int num_modes = 0;
711 int preferred_width, preferred_height;
713 vbox_connector = to_vbox_connector(connector);
714 vbox = to_vbox_dev(connector->dev);
716 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
718 if (vbox_connector->vbox_crtc->crtc_id == 0)
719 vbox_report_caps(vbox);
721 num_modes = drm_add_modes_noedid(connector, 2560, 1600);
722 preferred_width = vbox_connector->mode_hint.width ?
723 vbox_connector->mode_hint.width : 1024;
724 preferred_height = vbox_connector->mode_hint.height ?
725 vbox_connector->mode_hint.height : 768;
726 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
727 60, false, false, false);
729 mode->type |= DRM_MODE_TYPE_PREFERRED;
730 drm_mode_probed_add(connector, mode);
733 vbox_set_edid(connector, preferred_width, preferred_height);
735 if (vbox_connector->vbox_crtc->x_hint != -1)
736 drm_object_property_set_value(&connector->base,
737 vbox->ddev.mode_config.suggested_x_property,
738 vbox_connector->vbox_crtc->x_hint);
740 drm_object_property_set_value(&connector->base,
741 vbox->ddev.mode_config.suggested_x_property, 0);
743 if (vbox_connector->vbox_crtc->y_hint != -1)
744 drm_object_property_set_value(&connector->base,
745 vbox->ddev.mode_config.suggested_y_property,
746 vbox_connector->vbox_crtc->y_hint);
748 drm_object_property_set_value(&connector->base,
749 vbox->ddev.mode_config.suggested_y_property, 0);
754 static void vbox_connector_destroy(struct drm_connector *connector)
756 drm_connector_unregister(connector);
757 drm_connector_cleanup(connector);
761 static enum drm_connector_status
762 vbox_connector_detect(struct drm_connector *connector, bool force)
764 struct vbox_connector *vbox_connector;
766 vbox_connector = to_vbox_connector(connector);
768 return vbox_connector->mode_hint.disconnected ?
769 connector_status_disconnected : connector_status_connected;
772 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
775 struct vbox_connector *vbox_connector;
776 struct drm_device *dev;
777 struct drm_display_mode *mode, *iterator;
779 vbox_connector = to_vbox_connector(connector);
780 dev = vbox_connector->base.dev;
781 list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
782 list_del(&mode->head);
783 drm_mode_destroy(dev, mode);
786 return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
789 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
790 .get_modes = vbox_get_modes,
793 static const struct drm_connector_funcs vbox_connector_funcs = {
794 .detect = vbox_connector_detect,
795 .fill_modes = vbox_fill_modes,
796 .destroy = vbox_connector_destroy,
797 .reset = drm_atomic_helper_connector_reset,
798 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
799 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
802 static int vbox_connector_init(struct drm_device *dev,
803 struct vbox_crtc *vbox_crtc,
804 struct drm_encoder *encoder)
806 struct vbox_connector *vbox_connector;
807 struct drm_connector *connector;
809 vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
813 connector = &vbox_connector->base;
814 vbox_connector->vbox_crtc = vbox_crtc;
816 drm_connector_init(dev, connector, &vbox_connector_funcs,
817 DRM_MODE_CONNECTOR_VGA);
818 drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
820 connector->interlace_allowed = 0;
821 connector->doublescan_allowed = 0;
823 drm_mode_create_suggested_offset_properties(dev);
824 drm_object_attach_property(&connector->base,
825 dev->mode_config.suggested_x_property, 0);
826 drm_object_attach_property(&connector->base,
827 dev->mode_config.suggested_y_property, 0);
829 drm_connector_attach_encoder(connector, encoder);
834 static const struct drm_mode_config_funcs vbox_mode_funcs = {
835 .fb_create = drm_gem_fb_create_with_dirty,
836 .mode_valid = drm_vram_helper_mode_valid,
837 .atomic_check = drm_atomic_helper_check,
838 .atomic_commit = drm_atomic_helper_commit,
841 int vbox_mode_init(struct vbox_private *vbox)
843 struct drm_device *dev = &vbox->ddev;
844 struct drm_encoder *encoder;
845 struct vbox_crtc *vbox_crtc;
849 drm_mode_config_init(dev);
851 dev->mode_config.funcs = (void *)&vbox_mode_funcs;
852 dev->mode_config.min_width = 0;
853 dev->mode_config.min_height = 0;
854 dev->mode_config.preferred_depth = 24;
855 dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
856 dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
858 for (i = 0; i < vbox->num_crtcs; ++i) {
859 vbox_crtc = vbox_crtc_init(dev, i);
860 if (IS_ERR(vbox_crtc)) {
861 ret = PTR_ERR(vbox_crtc);
862 goto err_drm_mode_cleanup;
864 encoder = vbox_encoder_init(dev, i);
867 goto err_drm_mode_cleanup;
869 ret = vbox_connector_init(dev, vbox_crtc, encoder);
871 goto err_drm_mode_cleanup;
874 drm_mode_config_reset(dev);
877 err_drm_mode_cleanup:
878 drm_mode_config_cleanup(dev);
882 void vbox_mode_fini(struct vbox_private *vbox)
884 drm_mode_config_cleanup(&vbox->ddev);