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/*
* Copyright 1998 by Alan Hourihane, Wigan, England.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Alan Hourihane not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Alan Hourihane makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* Authors: Alan Hourihane, <alanh@fairlite.demon.co.uk>
*
* glintOutIBMRGBIndReg() and glintInIBMRGBIndReg() are used to access
* the indirect IBM RAMDAC registers only.
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/glint/IBMramdac.c,v 1.5 1998/08/29 14:34:34 dawes Exp $ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86PciInfo.h"
#include "xf86Pci.h"
#include "IBM.h"
#include "glint_regs.h"
#include "glint.h"
#define IBMRGB_WRITE_ADDR 0x4000
#define IBMRGB_RAMDAC_DATA 0x4008
#define IBMRGB_PIXEL_MASK 0x4010
#define IBMRGB_READ_ADDR 0x4018
#define IBMRGB_INDEX_LOW 0x4020
#define IBMRGB_INDEX_HIGH 0x4028
#define IBMRGB_INDEX_DATA 0x4030
#define IBMRGB_INDEX_CONTROL 0x4038
void
glintOutIBMRGBIndReg(ScrnInfoPtr pScrn,
CARD32 reg, unsigned char mask, unsigned char data)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
unsigned char tmp = 0x00;
GLINT_SLOW_WRITE_REG((reg>>8) & 0xff, IBMRGB_INDEX_HIGH);
GLINT_SLOW_WRITE_REG (reg & 0xFF, IBMRGB_INDEX_LOW);
if (mask != 0x00)
tmp = GLINT_READ_REG (IBMRGB_INDEX_DATA) & mask;
GLINT_SLOW_WRITE_REG (tmp | data, IBMRGB_INDEX_DATA);
}
unsigned char
glintInIBMRGBIndReg (ScrnInfoPtr pScrn, CARD32 reg)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
unsigned char ret;
GLINT_SLOW_WRITE_REG(reg & 0xFF, IBMRGB_INDEX_LOW);
GLINT_SLOW_WRITE_REG((reg>>8) & 0xff, IBMRGB_INDEX_HIGH);
ret = GLINT_READ_REG(IBMRGB_INDEX_DATA);
return (ret);
}
void
glintIBMWriteAddress (ScrnInfoPtr pScrn, CARD32 index)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
GLINT_SLOW_WRITE_REG(index, IBMRGB_WRITE_ADDR);
}
void
glintIBMWriteData (ScrnInfoPtr pScrn, unsigned char data)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
GLINT_SLOW_WRITE_REG(data, IBMRGB_RAMDAC_DATA);
}
void
glintIBMReadAddress (ScrnInfoPtr pScrn, CARD32 index)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
GLINT_SLOW_WRITE_REG(0xFF, IBMRGB_PIXEL_MASK);
GLINT_SLOW_WRITE_REG(index, IBMRGB_READ_ADDR);
}
unsigned char
glintIBMReadData (ScrnInfoPtr pScrn)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
return(GLINT_READ_REG(IBMRGB_RAMDAC_DATA));
}
Bool
glintIBMHWCursorInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
GLINTPtr pGlint = GLINTPTR(pScrn);
xf86CursorInfoPtr infoPtr;
infoPtr = xf86CreateCursorInfoRec();
if(!infoPtr) return FALSE;
pGlint->CursorInfoRec = infoPtr;
(*pGlint->RamDac->HWCursorInit)(infoPtr);
return(xf86InitCursor(pScreen, infoPtr));
}
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