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/*
* Copyright (C) 2012 Red Hat, Inc.
*
* -------------------------------------------------------------------
* This code is Based on Virtual Box OSE edid.c, with the following copyright
* notice:
*
* Copyright (C) 2006-2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
* --------------------------------------------------------------------
*
* This code is based on drmmode_display.c from the X.Org xf86-video-intel
* driver with the following copyright notice:
*
* Copyright © 2007 Red Hat, 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, sublicense,
* 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 above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Dave Airlie <airlied@redhat.com>
*/
#include <xorg-server.h>
#include <misc.h>
#include <xf86DDC.h>
#include <xf86Crtc.h>
#include "qxl.h"
enum { EDID_SIZE = 128 };
typedef struct __attribute__ ((__packed__)) {
unsigned char header[8];
unsigned char manufacturer[2];
unsigned char product_code[2];
unsigned char serial[4];
unsigned char week;
unsigned char year;
unsigned char version[2];
unsigned char capabilities;
unsigned char horizontal_resolution;
unsigned char vertical_resolution;
unsigned char gamma;
unsigned char features;
unsigned char chromaticity[10];
unsigned char default_timings[3];
unsigned char standard_timings[16];
unsigned char descriptor1[18];
unsigned char descriptor2[18];
unsigned char descriptor3[18];
unsigned char descriptor4[18];
unsigned char num_extensions;
unsigned char neg_checksum;
} EDIDv13;
int qxl_compile_time_test_edid_size[(sizeof(EDIDv13) == EDID_SIZE) - 1];
static const EDIDv13 edid_base =
{
.header = {0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00},
/* hex(sum([(ord(x) - ord('A') + 1) * 2**(5*i) for i,x in enumerate(reversed('QXL'))])) */
.manufacturer = {0x47, 0x0c}, /* (QXL) 5 bit per char (A-Z), last bit 0 */
.product_code = {0x00, 0x00},
.serial = {0x00, 0x00, 0x00, 0x00}, /* set differently per mode */
.year = 0x01,
.week = 0x00,
.version = {0x01, 0x03},
.capabilities = 0x80, /* digital */
.horizontal_resolution = 0x00, /* horiz. res in cm, zero for projectors */
.vertical_resolution = 0x00, /* vert. res in cm */
.gamma = 0x78, /* display gamma (120 == 2.2). Should we ask the host for this? */
.features = 0xEE, /* features (standby, suspend, off, RGB, standard colour space,
* preferred timing mode) */
.chromaticity = {0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54},
/* chromaticity for standard colour space - should we ask the host? */
.default_timings = {0x00, 0x00, 0x00}, /* no default timings */
.standard_timings = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01}, /* no standard timings */
.descriptor1 = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* descriptor block 1 goes here */
.descriptor2 = {0x00, 0x00, 0x00, 0xFD, 0x00, /* descriptor block 2, monitor ranges */
0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20},
/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
.descriptor3 = {0x00, 0x00, 0x00, 0xFC, 0x00, /* descriptor block 3, monitor name */
'Q', 'X', 'L', ' ', '1', '\n', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
.descriptor4 = {0x00, 0x00, 0x00, 0x10, 0x00, /* descriptor block 4: dummy data */
0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20},
.num_extensions = 0x00, /* number of extensions to follow */
.neg_checksum = 0x00 /* checksum goes here */
};
static void fillDescBlockTimings(unsigned char *pchDescBlock,
DisplayModePtr mode)
{
struct detailed_timings timing;
timing.clock = mode->Clock * 1000;
timing.h_active = mode->HDisplay;
timing.h_blanking = mode->HTotal - mode->HDisplay;
timing.v_active = mode->VDisplay;
timing.v_blanking = mode->VTotal - mode->VDisplay;
timing.h_sync_off = mode->HSyncStart - mode->HDisplay;
timing.h_sync_width = mode->HSyncEnd - mode->HSyncStart;
timing.v_sync_off = mode->VSyncStart - mode->VDisplay;
timing.v_sync_width = mode->VSyncEnd - mode->VSyncStart;
pchDescBlock[0] = (timing.clock / 10000) & 0xff;
pchDescBlock[1] = (timing.clock / 10000) >> 8;
pchDescBlock[2] = timing.h_active & 0xff;
pchDescBlock[3] = timing.h_blanking & 0xff;
pchDescBlock[4] = (timing.h_active >> 4) & 0xf0;
pchDescBlock[4] |= (timing.h_blanking >> 8) & 0xf;
pchDescBlock[5] = timing.v_active & 0xff;
pchDescBlock[6] = timing.v_blanking & 0xff;
pchDescBlock[7] = (timing.v_active >> 4) & 0xf0;
pchDescBlock[7] |= (timing.v_blanking >> 8) & 0xf;
pchDescBlock[8] = timing.h_sync_off & 0xff;
pchDescBlock[9] = timing.h_sync_width & 0xff;
pchDescBlock[10] = (timing.v_sync_off << 4) & 0xf0;
pchDescBlock[10] |= timing.v_sync_width & 0xf;
pchDescBlock[11] = (timing.h_sync_off >> 2) & 0xC0;
pchDescBlock[11] |= (timing.h_sync_width >> 4) & 0x30;
pchDescBlock[11] |= (timing.v_sync_off >> 2) & 0xC;
pchDescBlock[11] |= (timing.v_sync_width >> 4) & 0x3;
pchDescBlock[12] = pchDescBlock[13] = pchDescBlock[14]
= pchDescBlock[15] = pchDescBlock[16]
= pchDescBlock[17] = 0;
}
static void setEDIDChecksum(EDIDv13 *edid)
{
unsigned i, sum = 0;
unsigned char *p = (unsigned char *)edid;
for (i = 0; i < EDID_SIZE - 1; ++i)
sum += p[i];
edid->neg_checksum = (0x100 - (sum & 0xFF)) & 0xFF;
}
/**
* Construct an EDID for an output given a preferred mode. The main reason for
* doing this is to confound gnome-settings-deamon which tries to reset the
* last mode configuration if the same monitors are plugged in again, which is
* a reasonable thing to do but not what we want in a VM. We evily store
* the (empty) raw EDID data at the end of the structure so that it gets
* freed automatically along with the structure.
*/
Bool qxl_output_edid_set(xf86OutputPtr output, int head, DisplayModePtr mode)
{
unsigned char *pch;
EDIDv13 *edid;
xf86MonPtr edid_mon;
int eol_pos;
pch = calloc(1, sizeof(xf86Monitor) + EDID_SIZE);
if (!pch)
{
xf86DrvMsg(output->scrn->scrnIndex, X_ERROR,
"Can't allocate memory for EDID structure.\n");
return FALSE;
}
edid = (EDIDv13 *)(pch + sizeof(xf86Monitor));
*edid = edid_base;
edid->serial[0] = mode ? mode->HDisplay & 0xff : 0x00;
edid->serial[1] = mode ? mode->HDisplay >> 8 : 0x00;
edid->serial[2] = mode ? mode->VDisplay & 0xff : 0x00;
edid->serial[3] = mode ? mode->VDisplay >> 8 : 0x00;
snprintf((char *)&edid->descriptor3[5], 12, "QXL %d\n%n", head + 1, &eol_pos);
edid->descriptor3[5 + eol_pos] = ' ';
if (mode) {
fillDescBlockTimings(edid->descriptor1, mode);
}
setEDIDChecksum(edid);
edid_mon = xf86InterpretEDID(output->scrn->scrnIndex, (unsigned char *)edid);
if (!edid_mon)
{
free(pch);
return FALSE;
}
memcpy(pch, edid_mon, sizeof(xf86Monitor));
free(edid_mon);
edid_mon = (xf86MonPtr)pch;
xf86OutputSetEDID(output, edid_mon);
return TRUE;
}
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