/*
* 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.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*/
/*
* 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_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "vbox_drv.h"
#include "vboxvideo.h"
#include "hgsmi_channels.h"
static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
u32 handle, u32 width, u32 height,
s32 hot_x, s32 hot_y);
static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
/**
* 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,
const struct drm_display_mode *mode)
{
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 = mode->hdisplay ? mode->hdisplay : 640;
height = mode->vdisplay ? mode->vdisplay : 480;
bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
y_offset = vbox->single_framebuffer ? 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 && crtc->enabled &&
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,
CRTC_FB(crtc)->format->cpp[0] * 8);
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 + crtc->x);
vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
vbox_crtc->fb_offset / pitch + crtc->y);
}
flags = VBVA_SCREEN_F_ACTIVE;
flags |= (crtc->enabled && !vbox_crtc->blanked) ?
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,
crtc->x * bpp / 8 + crtc->y * pitch,
pitch, width, height,
vbox_crtc->blanked ? 0 : 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;
}
static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
struct vbox_private *vbox = crtc->dev->dev_private;
switch (mode) {
case DRM_MODE_DPMS_ON:
vbox_crtc->blanked = false;
break;
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
case DRM_MODE_DPMS_OFF:
vbox_crtc->blanked = true;
break;
}
mutex_lock(&vbox->hw_mutex);
vbox_do_modeset(crtc, &crtc->hwmode);
mutex_unlock(&vbox->hw_mutex);
}
static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
/*
* 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 *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->dev->mode_config.crtc_list, head) {
if (!fb1) {
fb1 = CRTC_FB(crtci);
if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
break;
} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
single_framebuffer = false;
}
}
if (single_framebuffer) {
list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
head) {
if (to_vbox_crtc(crtci)->crtc_id != 0)
continue;
vbox->single_framebuffer = true;
vbox->input_mapping_width = CRTC_FB(crtci)->width;
vbox->input_mapping_height = CRTC_FB(crtci)->height;
return old_single_framebuffer !=
vbox->single_framebuffer;
}
}
/* Otherwise calculate the total span of all screens. */
list_for_each_entry(connectori, &vbox->dev->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 int vbox_crtc_do_set_base(struct drm_crtc *crtc,
struct drm_framebuffer *old_fb,
struct drm_framebuffer *new_fb,
int x, int y)
{
struct vbox_private *vbox = crtc->dev->dev_private;
struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
struct drm_gem_object *obj;
struct vbox_framebuffer *vbox_fb;
struct vbox_bo *bo;
int ret;
u64 gpu_addr;
/* Unpin the previous fb. */
if (old_fb) {
vbox_fb = to_vbox_framebuffer(old_fb);
obj = vbox_fb->obj;
bo = gem_to_vbox_bo(obj);
ret = vbox_bo_reserve(bo, false);
if (ret)
return ret;
vbox_bo_unpin(bo);
vbox_bo_unreserve(bo);
}
vbox_fb = to_vbox_framebuffer(new_fb);
obj = vbox_fb->obj;
bo = gem_to_vbox_bo(obj);
ret = vbox_bo_reserve(bo, false);
if (ret)
return ret;
ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
if (ret) {
vbox_bo_unreserve(bo);
return ret;
}
if (&vbox->fbdev->afb == vbox_fb)
vbox_fbdev_set_base(vbox, gpu_addr);
vbox_bo_unreserve(bo);
/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
vbox_crtc->fb_offset = gpu_addr;
if (vbox_set_up_input_mapping(vbox)) {
struct drm_crtc *crtci;
list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
head) {
vbox_set_view(crtc);
vbox_do_modeset(crtci, &crtci->mode);
}
}
return 0;
}
static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
return vbox_crtc_do_set_base(crtc, old_fb, CRTC_FB(crtc), x, y);
}
static int vbox_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y, struct drm_framebuffer *old_fb)
{
struct vbox_private *vbox = crtc->dev->dev_private;
int ret;
vbox_crtc_mode_set_base(crtc, x, y, old_fb);
mutex_lock(&vbox->hw_mutex);
ret = vbox_set_view(crtc);
if (!ret)
vbox_do_modeset(crtc, mode);
hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
vbox->input_mapping_width,
vbox->input_mapping_height);
mutex_unlock(&vbox->hw_mutex);
return ret;
}
static int vbox_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags,
struct drm_modeset_acquire_ctx *ctx)
{
struct vbox_private *vbox = crtc->dev->dev_private;
struct drm_device *drm = vbox->dev;
unsigned long flags;
int rc;
rc = vbox_crtc_do_set_base(crtc, CRTC_FB(crtc), fb, 0, 0);
if (rc)
return rc;
mutex_lock(&vbox->hw_mutex);
vbox_set_view(crtc);
vbox_do_modeset(crtc, &crtc->mode);
mutex_unlock(&vbox->hw_mutex);
spin_lock_irqsave(&drm->event_lock, flags);
if (event)
drm_crtc_send_vblank_event(crtc, event);
spin_unlock_irqrestore(&drm->event_lock, flags);
return 0;
}
static void vbox_crtc_disable(struct drm_crtc *crtc)
{
}
static void vbox_crtc_prepare(struct drm_crtc *crtc)
{
}
static void vbox_crtc_commit(struct drm_crtc *crtc)
{
}
static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
.dpms = vbox_crtc_dpms,
.mode_fixup = vbox_crtc_mode_fixup,
.mode_set = vbox_crtc_mode_set,
/* .mode_set_base = vbox_crtc_mode_set_base, */
.disable = vbox_crtc_disable,
.prepare = vbox_crtc_prepare,
.commit = vbox_crtc_commit,
};
static void vbox_crtc_reset(struct drm_crtc *crtc)
{
}
static void vbox_crtc_destroy(struct drm_crtc *crtc)
{
drm_crtc_cleanup(crtc);
kfree(crtc);
}
static const struct drm_crtc_funcs vbox_crtc_funcs = {
.cursor_move = vbox_cursor_move,
.cursor_set2 = vbox_cursor_set2,
.reset = vbox_crtc_reset,
.set_config = drm_crtc_helper_set_config,
/* .gamma_set = vbox_crtc_gamma_set, */
.page_flip = vbox_crtc_page_flip,
.destroy = vbox_crtc_destroy,
};
static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
{
struct vbox_crtc *vbox_crtc;
vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
if (!vbox_crtc)
return NULL;
vbox_crtc->crtc_id = i;
drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
return vbox_crtc;
}
static void vbox_encoder_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
kfree(encoder);
}
static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
*connector)
{
int enc_id = connector->encoder_ids[0];
/* pick the encoder ids */
if (enc_id)
return drm_encoder_find(connector->dev, NULL, enc_id);
return NULL;
}
static const struct drm_encoder_funcs vbox_enc_funcs = {
.destroy = vbox_encoder_destroy,
};
static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
{
}
static bool vbox_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static void vbox_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
}
static void vbox_encoder_prepare(struct drm_encoder *encoder)
{
}
static void vbox_encoder_commit(struct drm_encoder *encoder)
{
}
static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
.dpms = vbox_encoder_dpms,
.mode_fixup = vbox_mode_fixup,
.prepare = vbox_encoder_prepare,
.commit = vbox_encoder_commit,
.mode_set = vbox_encoder_mode_set,
};
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);
drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
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;
/*
* Heuristic: we do not want to tell the host that we support dynamic
* resizing unless we feel confident that the user space client using
* the video driver can handle hot-plug events. So the first time modes
* are queried after a "master" switch we tell the host that we do not,
* and immediately after we send the client a hot-plug notification as
* a test to see if they will respond and query again.
* That is also the reason why capabilities are reported to the host at
* this place in the code rather than elsewhere.
* We need to report the flags location before reporting the IRQ
* capability.
*/
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);
if (!vbox->initial_mode_queried) {
if (vbox_connector->vbox_crtc->crtc_id == 0) {
vbox->initial_mode_queried = true;
vbox_report_hotplug(vbox);
}
return drm_add_modes_noedid(connector, 800, 600);
}
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->dev->mode_config.suggested_x_property,
vbox_connector->vbox_crtc->x_hint);
else
drm_object_property_set_value(&connector->base,
vbox->dev->mode_config.suggested_x_property, 0);
if (vbox_connector->vbox_crtc->y_hint != -1)
drm_object_property_set_value(&connector->base,
vbox->dev->mode_config.suggested_y_property,
vbox_connector->vbox_crtc->y_hint);
else
drm_object_property_set_value(&connector->base,
vbox->dev->mode_config.suggested_y_property, 0);
return num_modes;
}
static enum drm_mode_status vbox_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
return MODE_OK;
}
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 = {
.mode_valid = vbox_mode_valid,
.get_modes = vbox_get_modes,
.best_encoder = vbox_best_single_encoder,
};
static const struct drm_connector_funcs vbox_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.detect = vbox_connector_detect,
.fill_modes = vbox_fill_modes,
.destroy = vbox_connector_destroy,
};
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_register(connector);
drm_connector_attach_encoder(connector, encoder);
return 0;
}
int vbox_mode_init(struct drm_device *dev)
{
struct vbox_private *vbox = dev->dev_private;
struct drm_encoder *encoder;
struct vbox_crtc *vbox_crtc;
unsigned int i;
int ret;
/* vbox_cursor_init(dev); */
for (i = 0; i < vbox->num_crtcs; ++i) {
vbox_crtc = vbox_crtc_init(dev, i);
if (!vbox_crtc)
return -ENOMEM;
encoder = vbox_encoder_init(dev, i);
if (!encoder)
return -ENOMEM;
ret = vbox_connector_init(dev, vbox_crtc, encoder);
if (ret)
return ret;
}
return 0;
}
void vbox_mode_fini(struct drm_device *dev)
{
/* vbox_cursor_fini(dev); */
}
/**
* 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 int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
u32 handle, u32 width, u32 height,
s32 hot_x, s32 hot_y)
{
struct vbox_private *vbox = crtc->dev->dev_private;
struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
struct ttm_bo_kmap_obj uobj_map;
size_t data_size, mask_size;
struct drm_gem_object *obj;
u32 flags, caps = 0;
struct vbox_bo *bo;
bool src_isiomem;
u8 *dst = NULL;
u8 *src;
int ret;
/*
* Re-set this regularly as in 5.0.20 and earlier the information was
* lost on save and restore.
*/
hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
vbox->input_mapping_width,
vbox->input_mapping_height);
if (!handle) {
bool cursor_enabled = false;
struct drm_crtc *crtci;
/* Hide cursor. */
vbox_crtc->cursor_enabled = false;
list_for_each_entry(crtci, &vbox->dev->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);
return 0;
}
vbox_crtc->cursor_enabled = true;
if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
width == 0 || height == 0)
return -EINVAL;
ret = hgsmi_query_conf(vbox->guest_pool,
VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
if (ret)
return ret;
if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
/*
* -EINVAL means cursor_set2() not supported, -EAGAIN means
* retry at once.
*/
return -EBUSY;
}
obj = drm_gem_object_lookup(file_priv, handle);
if (!obj) {
DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
return -ENOENT;
}
bo = gem_to_vbox_bo(obj);
ret = vbox_bo_reserve(bo, false);
if (ret)
goto out_unref_obj;
/*
* 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;
vbox->cursor_hot_x = min_t(u32, max(hot_x, 0), width);
vbox->cursor_hot_y = min_t(u32, max(hot_y, 0), height);
vbox->cursor_width = width;
vbox->cursor_height = height;
vbox->cursor_data_size = data_size;
dst = vbox->cursor_data;
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
if (ret) {
vbox->cursor_data_size = 0;
goto out_unreserve_bo;
}
src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
if (src_isiomem) {
DRM_ERROR("src cursor bo not in main memory\n");
ret = -EIO;
goto out_unmap_bo;
}
copy_cursor_image(src, dst, width, height, mask_size);
flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
VBOX_MOUSE_POINTER_ALPHA;
ret = hgsmi_update_pointer_shape(vbox->guest_pool, flags,
vbox->cursor_hot_x, vbox->cursor_hot_y,
width, height, dst, data_size);
out_unmap_bo:
ttm_bo_kunmap(&uobj_map);
out_unreserve_bo:
vbox_bo_unreserve(bo);
out_unref_obj:
drm_gem_object_put_unlocked(obj);
return ret;
}
static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
{
struct vbox_private *vbox = crtc->dev->dev_private;
u32 flags = VBOX_MOUSE_POINTER_VISIBLE |
VBOX_MOUSE_POINTER_SHAPE | VBOX_MOUSE_POINTER_ALPHA;
s32 crtc_x =
vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
s32 crtc_y =
vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
u32 host_x, host_y;
u32 hot_x = 0;
u32 hot_y = 0;
int ret;
/*
* We compare these to unsigned later and don't
* need to handle negative.
*/
if (x + crtc_x < 0 || y + crtc_y < 0 || vbox->cursor_data_size == 0)
return 0;
ret = hgsmi_cursor_position(vbox->guest_pool, true, x + crtc_x,
y + crtc_y, &host_x, &host_y);
/*
* The only reason we have vbox_cursor_move() is that some older clients
* might use DRM_IOCTL_MODE_CURSOR instead of DRM_IOCTL_MODE_CURSOR2 and
* use DRM_MODE_CURSOR_MOVE to set the hot-spot.
*
* However VirtualBox 5.0.20 and earlier has a bug causing it to return
* 0,0 as host cursor location after a save and restore.
*
* To work around this we ignore a 0, 0 return, since missing the odd
* time when it legitimately happens is not going to hurt much.
*/
if (ret || (host_x == 0 && host_y == 0))
return ret;
if (x + crtc_x < host_x)
hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
if (y + crtc_y < host_y)
hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
return 0;
vbox->cursor_hot_x = hot_x;
vbox->cursor_hot_y = hot_y;
return hgsmi_update_pointer_shape(vbox->guest_pool, flags,
hot_x, hot_y, vbox->cursor_width, vbox->cursor_height,
vbox->cursor_data, vbox->cursor_data_size);
}
