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/***************************************************************************
* Copyright (C) 2003-2006 by XGI Technology, Taiwan. *
* *
* All Rights Reserved. *
* *
* 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 on 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 *
* NON-INFRINGEMENT. IN NO EVENT SHALL XGI 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. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xgi.h"
#include "xgi_version.h"
#include "xgi_regs.h"
void XG47EnableMMIO(ScrnInfoPtr pScrn)
{
XGIPtr pXGI = XGIPTR(pScrn);
CARD8 protect = 0, temp = 0, temp1 = 0;
/* Unprotect registers */
outb(0x3C4, 0x11);
protect = inb(0x3C5);
outb(0x3C5, 0x92);
/* Go to new mode */
outb(0x3C4, 0xB);
temp1 = inb(0x3C5);
/*
* in order to enable write configuration port (3C5.0CH, 3C5.0FH, 3X5.28H,
* 3X5.29H, 3X5.2AH and bit [6:4] of 3C5.0EH), bit7 of control Register
* (3C5.0EH) must be set 1 in the New Mode firstly. Bit1 of (3C5.0EH)
* should be inverted when performing write.
*/
outb(0x3C4, 0xE);
temp = inb(0x3C5);
if (temp & 0x2) {
outb(0x3C5, ((temp | 0x80) & 0xFC));
} else {
outb(0x3C5, ((temp | 0x80) | 0x2));
}
/*
* 3D4/3D5 3A
* <5>: BOTH_IO
* 1: Enable both pure-IO and MMIO
* 0: No MMIO
*/
outb(0x3D4, 0x3A);
outb(0x3D5, inb(0x3D5) | 0x20);
/* Enable MMIO */
outb(0x3D4, 0x39);
outb(0x3D5, inb(0x3D5) | 0x01);
/* Go to old mode */
OUTB(0x3C4, 0xB);
OUTB(0x3C5, temp1);
/* Protect registers */
OUTB(0x3C4, 0x11);
OUTB(0x3C5, protect);
}
void XG47DisableMMIO(ScrnInfoPtr pScrn)
{
uint8_t protect = 0;
XGIPtr pXGI = XGIPTR(pScrn);
if (pXGI->IOBase == 0) {
return;
}
/* Protect registers */
OUTB(0x3C4, 0x11);
protect = INB(0x3C5);
OUTB(0x3C5, 0x92);
/* Disable MMIO access */
OUTB(0x3D4, 0x39);
OUTB(0x3D5, INB(0x3D5) & 0xFE);
/* Protect registers */
outb(pXGI->PIOBase + 0x3C4, 0x11);
outb(pXGI->PIOBase + 0x3C5, protect);
}
void XG47AdjustFrame(ADJUST_FRAME_ARGS_DECL)
{
SCRN_INFO_PTR(arg);
XGIPtr pXGI = XGIPTR(pScrn);
unsigned long base = y * pScrn->displayWidth + x;
#if DBG_FLOW
ErrorF("(II) XGI (0) ++ Enter %s() %s:%d\n", __FUNCTION__, __FILE__, __LINE__);
#endif
switch (pScrn->bitsPerPixel) {
case 8:
base &= 0xFFFFFFF8;
base >>= (pScrn->progClock) ? 2 : 3;
break;
case 16:
base >>= 1;
break;
case 24:
base = (((base + 1) & ~0x03) * 3) >> 2;
break;
case 32:
break;
}
OUT3X5B(0x0d, (base & 0x000000FF) >> 0x00);
OUT3X5B(0x0c, (base & 0x0000FF00) >> 0x08);
OUT3X5B(0x8c, (base & 0x00FF0000) >> 0x10);
OUT3X5B(0x8d, (base & 0xFF000000) >> 0x18);
#if DBG_FLOW
ErrorF("(II) XGI (0) -- Leave %s() %s:%d\n", __FUNCTION__, __FILE__, __LINE__);
#endif
}
/**
* Examine hardware to determine the size of installed memory.
*/
void XG47GetFramebufferSize(XGIPtr pXGI)
{
/* See documentation on page 9-17 of "Volari XP10 non-3D SPG v1.0.pdf"
*/
const uint8_t biascntl = IN3X5B(0x60);
static const unsigned s[8] = {
256, 128, 64, 32, 16, 0, 0, 0
};
pXGI->biosFbSize = s[biascntl & 0x07] * 0x100000;
pXGI->freeFbSize = pXGI->biosFbSize;
}
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