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OpenCloudOS-Kernel/drivers/gpu/drm/vboxvideo/vbox_mode.c

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// SPDX-License-Identifier: MIT
/*
* Copyright (C) 2013-2017 Oracle Corporation
* This file is based on ast_mode.c
* Copyright 2012 Red Hat Inc.
* Parts based on xf86-video-ast
* Copyright (c) 2005 ASPEED Technology Inc.
* Authors: Dave Airlie <airlied@redhat.com>
* Michael Thayer <michael.thayer@oracle.com,
* Hans de Goede <hdegoede@redhat.com>
*/
#include <linux/export.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
#include "hgsmi_channels.h"
#include "vbox_drv.h"
#include "vboxvideo.h"
/*
* Set a graphics mode. Poke any required values into registers, do an HGSMI
* mode set and tell the host we support advanced graphics functions.
*/
static void vbox_do_modeset(struct drm_crtc *crtc)
{
struct drm_framebuffer *fb = crtc->primary->state->fb;
struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
struct vbox_private *vbox;
int width, height, bpp, pitch;
u16 flags;
s32 x_offset, y_offset;
vbox = crtc->dev->dev_private;
width = vbox_crtc->width ? vbox_crtc->width : 640;
height = vbox_crtc->height ? vbox_crtc->height : 480;
bpp = fb ? fb->format->cpp[0] * 8 : 32;
pitch = fb ? fb->pitches[0] : width * bpp / 8;
x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint;
y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint;
/*
* This is the old way of setting graphics modes. It assumed one screen
* and a frame-buffer at the start of video RAM. On older versions of
* VirtualBox, certain parts of the code still assume that the first
* screen is programmed this way, so try to fake it.
*/
if (vbox_crtc->crtc_id == 0 && fb &&
vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
vbox_crtc->fb_offset % (bpp / 8) == 0) {
vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp);
vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET,
vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x);
vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
vbox_crtc->fb_offset / pitch + vbox_crtc->y);
}
flags = VBVA_SCREEN_F_ACTIVE;
flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK;
flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
x_offset, y_offset,
vbox_crtc->x * bpp / 8 +
vbox_crtc->y * pitch,
pitch, width, height, bpp, flags);
}
static int vbox_set_view(struct drm_crtc *crtc)
{
struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
struct vbox_private *vbox = crtc->dev->dev_private;
struct vbva_infoview *p;
/*
* Tell the host about the view. This design originally targeted the
* Windows XP driver architecture and assumed that each screen would
* have a dedicated frame buffer with the command buffer following it,
* the whole being a "view". The host works out which screen a command
* buffer belongs to by checking whether it is in the first view, then
* whether it is in the second and so on. The first match wins. We
* cheat around this by making the first view be the managed memory
* plus the first command buffer, the second the same plus the second
* buffer and so on.
*/
p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
HGSMI_CH_VBVA, VBVA_INFO_VIEW);
if (!p)
return -ENOMEM;
p->view_index = vbox_crtc->crtc_id;
p->view_offset = vbox_crtc->fb_offset;
p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
hgsmi_buffer_submit(vbox->guest_pool, p);
hgsmi_buffer_free(vbox->guest_pool, p);
return 0;
}
/*
* Try to map the layout of virtual screens to the range of the input device.
* Return true if we need to re-set the crtc modes due to screen offset
* changes.
*/
static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
{
struct drm_crtc *crtci;
struct drm_connector *connectori;
struct drm_framebuffer *fb, *fb1 = NULL;
bool single_framebuffer = true;
bool old_single_framebuffer = vbox->single_framebuffer;
u16 width = 0, height = 0;
/*
* Are we using an X.Org-style single large frame-buffer for all crtcs?
* If so then screen layout can be deduced from the crtc offsets.
* Same fall-back if this is the fbdev frame-buffer.
*/
list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
fb = crtci->primary->state->fb;
if (!fb)
continue;
if (!fb1) {
fb1 = fb;
if (fb1 == vbox->ddev.fb_helper->fb)
break;
} else if (fb != fb1) {
single_framebuffer = false;
}
}
if (!fb1)
return false;
if (single_framebuffer) {
vbox->single_framebuffer = true;
vbox->input_mapping_width = fb1->width;
vbox->input_mapping_height = fb1->height;
return old_single_framebuffer != vbox->single_framebuffer;
}
/* Otherwise calculate the total span of all screens. */
list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list,
head) {
struct vbox_connector *vbox_connector =
to_vbox_connector(connectori);
struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
width = max_t(u16, width, vbox_crtc->x_hint +
vbox_connector->mode_hint.width);
height = max_t(u16, height, vbox_crtc->y_hint +
vbox_connector->mode_hint.height);
}
vbox->single_framebuffer = false;
vbox->input_mapping_width = width;
vbox->input_mapping_height = height;
return old_single_framebuffer != vbox->single_framebuffer;
}
static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int x, int y)
{
struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]);
struct vbox_private *vbox = crtc->dev->dev_private;
struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state);
mutex_lock(&vbox->hw_mutex);
if (crtc->state->enable) {
vbox_crtc->width = crtc->state->mode.hdisplay;
vbox_crtc->height = crtc->state->mode.vdisplay;
}
vbox_crtc->x = x;
vbox_crtc->y = y;
vbox_crtc->fb_offset = drm_gem_vram_offset(gbo);
/* vbox_do_modeset() checks vbox->single_framebuffer so update it now */
if (needs_modeset && vbox_set_up_input_mapping(vbox)) {
struct drm_crtc *crtci;
list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list,
head) {
if (crtci == crtc)
continue;
vbox_do_modeset(crtci);
}
}
vbox_set_view(crtc);
vbox_do_modeset(crtc);
if (needs_modeset)
hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
vbox->input_mapping_width,
vbox->input_mapping_height);
mutex_unlock(&vbox->hw_mutex);
}
static void vbox_crtc_atomic_enable(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
}
static void vbox_crtc_atomic_disable(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
}
static void vbox_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct drm_pending_vblank_event *event;
unsigned long flags;
if (crtc->state && crtc->state->event) {
event = crtc->state->event;
crtc->state->event = NULL;
spin_lock_irqsave(&crtc->dev->event_lock, flags);
drm_crtc_send_vblank_event(crtc, event);
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
}
}
static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
.atomic_enable = vbox_crtc_atomic_enable,
.atomic_disable = vbox_crtc_atomic_disable,
.atomic_flush = vbox_crtc_atomic_flush,
};
static void vbox_crtc_destroy(struct drm_crtc *crtc)
{
drm_crtc_cleanup(crtc);
kfree(crtc);
}
static const struct drm_crtc_funcs vbox_crtc_funcs = {
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
/* .gamma_set = vbox_crtc_gamma_set, */
.destroy = vbox_crtc_destroy,
.reset = drm_atomic_helper_crtc_reset,
.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
};
static int vbox_primary_atomic_check(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct drm_crtc_state *crtc_state = NULL;
if (new_state->crtc) {
crtc_state = drm_atomic_get_existing_crtc_state(
new_state->state, new_state->crtc);
if (WARN_ON(!crtc_state))
return -EINVAL;
}
return drm_atomic_helper_check_plane_state(new_state, crtc_state,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
false, true);
}
static void vbox_primary_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_crtc *crtc = plane->state->crtc;
struct drm_framebuffer *fb = plane->state->fb;
struct vbox_private *vbox = fb->dev->dev_private;
struct drm_mode_rect *clips;
uint32_t num_clips, i;
vbox_crtc_set_base_and_mode(crtc, fb,
plane->state->src_x >> 16,
plane->state->src_y >> 16);
/* Send information about dirty rectangles to VBVA. */
clips = drm_plane_get_damage_clips(plane->state);
num_clips = drm_plane_get_damage_clips_count(plane->state);
if (!num_clips)
return;
mutex_lock(&vbox->hw_mutex);
for (i = 0; i < num_clips; ++i, ++clips) {
struct vbva_cmd_hdr cmd_hdr;
unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id;
cmd_hdr.x = (s16)clips->x1;
cmd_hdr.y = (s16)clips->y1;
cmd_hdr.w = (u16)clips->x2 - clips->x1;
cmd_hdr.h = (u16)clips->y2 - clips->y1;
if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id],
vbox->guest_pool))
continue;
vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool,
&cmd_hdr, sizeof(cmd_hdr));
vbva_buffer_end_update(&vbox->vbva_info[crtc_id]);
}
mutex_unlock(&vbox->hw_mutex);
}
static void vbox_primary_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_crtc *crtc = old_state->crtc;
/* vbox_do_modeset checks plane->state->fb and will disable if NULL */
vbox_crtc_set_base_and_mode(crtc, old_state->fb,
old_state->src_x >> 16,
old_state->src_y >> 16);
}
static int vbox_cursor_atomic_check(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct drm_crtc_state *crtc_state = NULL;
u32 width = new_state->crtc_w;
u32 height = new_state->crtc_h;
int ret;
if (new_state->crtc) {
crtc_state = drm_atomic_get_existing_crtc_state(
new_state->state, new_state->crtc);
if (WARN_ON(!crtc_state))
return -EINVAL;
}
ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
true, true);
if (ret)
return ret;
if (!new_state->fb)
return 0;
if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
width == 0 || height == 0)
return -EINVAL;
return 0;
}
/*
* Copy the ARGB image and generate the mask, which is needed in case the host
* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
* if the corresponding alpha value in the ARGB image is greater than 0xF0.
*/
static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
size_t mask_size)
{
size_t line_size = (width + 7) / 8;
u32 i, j;
memcpy(dst + mask_size, src, width * height * 4);
for (i = 0; i < height; ++i)
for (j = 0; j < width; ++j)
if (((u32 *)src)[i * width + j] > 0xf0000000)
dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
}
static void vbox_cursor_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vbox_private *vbox =
container_of(plane->dev, struct vbox_private, ddev);
struct vbox_crtc *vbox_crtc = to_vbox_crtc(plane->state->crtc);
struct drm_framebuffer *fb = plane->state->fb;
struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]);
u32 width = plane->state->crtc_w;
u32 height = plane->state->crtc_h;
size_t data_size, mask_size;
u32 flags;
u8 *src;
/*
* VirtualBox uses the host windowing system to draw the cursor so
* moves are a no-op, we only need to upload new cursor sprites.
*/
if (fb == old_state->fb)
return;
mutex_lock(&vbox->hw_mutex);
vbox_crtc->cursor_enabled = true;
/* pinning is done in prepare/cleanup framebuffer */
src = drm_gem_vram_kmap(gbo, true, NULL);
if (IS_ERR(src)) {
mutex_unlock(&vbox->hw_mutex);
DRM_WARN("Could not kmap cursor bo, skipping update\n");
return;
}
/*
* The mask must be calculated based on the alpha
* channel, one bit per ARGB word, and must be 32-bit
* padded.
*/
mask_size = ((width + 7) / 8 * height + 3) & ~3;
data_size = width * height * 4 + mask_size;
copy_cursor_image(src, vbox->cursor_data, width, height, mask_size);
drm_gem_vram_kunmap(gbo);
flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
VBOX_MOUSE_POINTER_ALPHA;
hgsmi_update_pointer_shape(vbox->guest_pool, flags,
min_t(u32, max(fb->hot_x, 0), width),
min_t(u32, max(fb->hot_y, 0), height),
width, height, vbox->cursor_data, data_size);
mutex_unlock(&vbox->hw_mutex);
}
static void vbox_cursor_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vbox_private *vbox =
container_of(plane->dev, struct vbox_private, ddev);
struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc);
bool cursor_enabled = false;
struct drm_crtc *crtci;
mutex_lock(&vbox->hw_mutex);
vbox_crtc->cursor_enabled = false;
list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
if (to_vbox_crtc(crtci)->cursor_enabled)
cursor_enabled = true;
}
if (!cursor_enabled)
hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
0, 0, NULL, 0);
mutex_unlock(&vbox->hw_mutex);
}
static const u32 vbox_cursor_plane_formats[] = {
DRM_FORMAT_ARGB8888,
};
static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = {
.atomic_check = vbox_cursor_atomic_check,
.atomic_update = vbox_cursor_atomic_update,
.atomic_disable = vbox_cursor_atomic_disable,
.prepare_fb = drm_gem_vram_plane_helper_prepare_fb,
.cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb,
};
static const struct drm_plane_funcs vbox_cursor_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_primary_helper_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static const u32 vbox_primary_plane_formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
};
static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = {
.atomic_check = vbox_primary_atomic_check,
.atomic_update = vbox_primary_atomic_update,
.atomic_disable = vbox_primary_atomic_disable,
.prepare_fb = drm_gem_vram_plane_helper_prepare_fb,
.cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb,
};
static const struct drm_plane_funcs vbox_primary_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_primary_helper_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static struct drm_plane *vbox_create_plane(struct vbox_private *vbox,
unsigned int possible_crtcs,
enum drm_plane_type type)
{
const struct drm_plane_helper_funcs *helper_funcs = NULL;
const struct drm_plane_funcs *funcs;
struct drm_plane *plane;
const u32 *formats;
int num_formats;
int err;
if (type == DRM_PLANE_TYPE_PRIMARY) {
funcs = &vbox_primary_plane_funcs;
formats = vbox_primary_plane_formats;
helper_funcs = &vbox_primary_helper_funcs;
num_formats = ARRAY_SIZE(vbox_primary_plane_formats);
} else if (type == DRM_PLANE_TYPE_CURSOR) {
funcs = &vbox_cursor_plane_funcs;
formats = vbox_cursor_plane_formats;
helper_funcs = &vbox_cursor_helper_funcs;
num_formats = ARRAY_SIZE(vbox_cursor_plane_formats);
} else {
return ERR_PTR(-EINVAL);
}
plane = kzalloc(sizeof(*plane), GFP_KERNEL);
if (!plane)
return ERR_PTR(-ENOMEM);
err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs,
funcs, formats, num_formats,
NULL, type, NULL);
if (err)
goto free_plane;
drm_plane_helper_add(plane, helper_funcs);
return plane;
free_plane:
kfree(plane);
return ERR_PTR(-EINVAL);
}
static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
{
struct vbox_private *vbox =
container_of(dev, struct vbox_private, ddev);
struct drm_plane *cursor = NULL;
struct vbox_crtc *vbox_crtc;
struct drm_plane *primary;
u32 caps = 0;
int ret;
ret = hgsmi_query_conf(vbox->guest_pool,
VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
if (ret)
return ERR_PTR(ret);
vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
if (!vbox_crtc)
return ERR_PTR(-ENOMEM);
primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY);
if (IS_ERR(primary)) {
ret = PTR_ERR(primary);
goto free_mem;
}
if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR);
if (IS_ERR(cursor)) {
ret = PTR_ERR(cursor);
goto clean_primary;
}
} else {
DRM_WARN("VirtualBox host is too old, no cursor support\n");
}
vbox_crtc->crtc_id = i;
ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor,
&vbox_crtc_funcs, NULL);
if (ret)
goto clean_cursor;
drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
return vbox_crtc;
clean_cursor:
if (cursor) {
drm_plane_cleanup(cursor);
kfree(cursor);
}
clean_primary:
drm_plane_cleanup(primary);
kfree(primary);
free_mem:
kfree(vbox_crtc);
return ERR_PTR(ret);
}
static void vbox_encoder_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
kfree(encoder);
}
static const struct drm_encoder_funcs vbox_enc_funcs = {
.destroy = vbox_encoder_destroy,
};
static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
unsigned int i)
{
struct vbox_encoder *vbox_encoder;
vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
if (!vbox_encoder)
return NULL;
drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
DRM_MODE_ENCODER_DAC, NULL);
vbox_encoder->base.possible_crtcs = 1 << i;
return &vbox_encoder->base;
}
/*
* Generate EDID data with a mode-unique serial number for the virtual
* monitor to try to persuade Unity that different modes correspond to
* different monitors and it should not try to force the same resolution on
* them.
*/
static void vbox_set_edid(struct drm_connector *connector, int width,
int height)
{
enum { EDID_SIZE = 128 };
unsigned char edid[EDID_SIZE] = {
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
0x58, 0x58, /* manufacturer (VBX) */
0x00, 0x00, /* product code */
0x00, 0x00, 0x00, 0x00, /* serial number goes here */
0x01, /* week of manufacture */
0x00, /* year of manufacture */
0x01, 0x03, /* EDID version */
0x80, /* capabilities - digital */
0x00, /* horiz. res in cm, zero for projectors */
0x00, /* vert. res in cm */
0x78, /* display gamma (120 == 2.2). */
0xEE, /* features (standby, suspend, off, RGB, std */
/* colour space, preferred timing mode) */
0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
/* chromaticity for standard colour space. */
0x00, 0x00, 0x00, /* no default timings */
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01,
0x01, 0x01, 0x01, 0x01, /* no standard timings */
0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
0x02, 0x02,
/* descriptor block 1 goes below */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* descriptor block 2, monitor ranges */
0x00, 0x00, 0x00, 0xFD, 0x00,
0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
0x20, 0x20,
/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
0x20,
/* descriptor block 3, monitor name */
0x00, 0x00, 0x00, 0xFC, 0x00,
'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
'\n',
/* descriptor block 4: dummy data */
0x00, 0x00, 0x00, 0x10, 0x00,
0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20,
0x00, /* number of extensions */
0x00 /* checksum goes here */
};
int clock = (width + 6) * (height + 6) * 60 / 10000;
unsigned int i, sum = 0;
edid[12] = width & 0xff;
edid[13] = width >> 8;
edid[14] = height & 0xff;
edid[15] = height >> 8;
edid[54] = clock & 0xff;
edid[55] = clock >> 8;
edid[56] = width & 0xff;
edid[58] = (width >> 4) & 0xf0;
edid[59] = height & 0xff;
edid[61] = (height >> 4) & 0xf0;
for (i = 0; i < EDID_SIZE - 1; ++i)
sum += edid[i];
edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
drm_connector_update_edid_property(connector, (struct edid *)edid);
}
static int vbox_get_modes(struct drm_connector *connector)
{
struct vbox_connector *vbox_connector = NULL;
struct drm_display_mode *mode = NULL;
struct vbox_private *vbox = NULL;
unsigned int num_modes = 0;
int preferred_width, preferred_height;
vbox_connector = to_vbox_connector(connector);
vbox = connector->dev->dev_private;
hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
HOST_FLAGS_OFFSET);
if (vbox_connector->vbox_crtc->crtc_id == 0)
vbox_report_caps(vbox);
num_modes = drm_add_modes_noedid(connector, 2560, 1600);
preferred_width = vbox_connector->mode_hint.width ?
vbox_connector->mode_hint.width : 1024;
preferred_height = vbox_connector->mode_hint.height ?
vbox_connector->mode_hint.height : 768;
mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
60, false, false, false);
if (mode) {
mode->type |= DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(connector, mode);
++num_modes;
}
vbox_set_edid(connector, preferred_width, preferred_height);
if (vbox_connector->vbox_crtc->x_hint != -1)
drm_object_property_set_value(&connector->base,
vbox->ddev.mode_config.suggested_x_property,
vbox_connector->vbox_crtc->x_hint);
else
drm_object_property_set_value(&connector->base,
vbox->ddev.mode_config.suggested_x_property, 0);
if (vbox_connector->vbox_crtc->y_hint != -1)
drm_object_property_set_value(&connector->base,
vbox->ddev.mode_config.suggested_y_property,
vbox_connector->vbox_crtc->y_hint);
else
drm_object_property_set_value(&connector->base,
vbox->ddev.mode_config.suggested_y_property, 0);
return num_modes;
}
static void vbox_connector_destroy(struct drm_connector *connector)
{
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
static enum drm_connector_status
vbox_connector_detect(struct drm_connector *connector, bool force)
{
struct vbox_connector *vbox_connector;
vbox_connector = to_vbox_connector(connector);
return vbox_connector->mode_hint.disconnected ?
connector_status_disconnected : connector_status_connected;
}
static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
u32 max_y)
{
struct vbox_connector *vbox_connector;
struct drm_device *dev;
struct drm_display_mode *mode, *iterator;
vbox_connector = to_vbox_connector(connector);
dev = vbox_connector->base.dev;
list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
list_del(&mode->head);
drm_mode_destroy(dev, mode);
}
return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
}
static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
.get_modes = vbox_get_modes,
};
static const struct drm_connector_funcs vbox_connector_funcs = {
.detect = vbox_connector_detect,
.fill_modes = vbox_fill_modes,
.destroy = vbox_connector_destroy,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int vbox_connector_init(struct drm_device *dev,
struct vbox_crtc *vbox_crtc,
struct drm_encoder *encoder)
{
struct vbox_connector *vbox_connector;
struct drm_connector *connector;
vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
if (!vbox_connector)
return -ENOMEM;
connector = &vbox_connector->base;
vbox_connector->vbox_crtc = vbox_crtc;
drm_connector_init(dev, connector, &vbox_connector_funcs,
DRM_MODE_CONNECTOR_VGA);
drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
connector->interlace_allowed = 0;
connector->doublescan_allowed = 0;
drm_mode_create_suggested_offset_properties(dev);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_x_property, 0);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_y_property, 0);
drm_connector_attach_encoder(connector, encoder);
return 0;
}
static const struct drm_mode_config_funcs vbox_mode_funcs = {
.fb_create = drm_gem_fb_create_with_dirty,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
int vbox_mode_init(struct vbox_private *vbox)
{
struct drm_device *dev = &vbox->ddev;
struct drm_encoder *encoder;
struct vbox_crtc *vbox_crtc;
unsigned int i;
int ret;
drm_mode_config_init(dev);
dev->mode_config.funcs = (void *)&vbox_mode_funcs;
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.preferred_depth = 24;
dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
for (i = 0; i < vbox->num_crtcs; ++i) {
vbox_crtc = vbox_crtc_init(dev, i);
if (IS_ERR(vbox_crtc)) {
ret = PTR_ERR(vbox_crtc);
goto err_drm_mode_cleanup;
}
encoder = vbox_encoder_init(dev, i);
if (!encoder) {
ret = -ENOMEM;
goto err_drm_mode_cleanup;
}
ret = vbox_connector_init(dev, vbox_crtc, encoder);
if (ret)
goto err_drm_mode_cleanup;
}
drm_mode_config_reset(dev);
return 0;
err_drm_mode_cleanup:
drm_mode_config_cleanup(dev);
return ret;
}
void vbox_mode_fini(struct vbox_private *vbox)
{
drm_mode_config_cleanup(&vbox->ddev);
}
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