xref: /xsrc/external/mit/xf86-video-glint/dist/src/pm2_dac.c

/*
 * Copyright 1997-2001 by Alan Hourihane <alanh@fairlite.demon.co.uk>
 *
 * 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>
 *           Dirk Hohndel,   <hohndel@suse.de>
 *	     Stefan Dirsch,  <sndirsch@suse.de>
 *	     Helmut Fahrion, <hf@suse.de>
 *	     Michel Dänzer,  <michdaen@iiic.ethz.ch>
 *
 * this work is sponsored by S.u.S.E. GmbH, Fuerth, Elsa GmbH, Aachen and
 * Siemens Nixdorf Informationssysteme
 */
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/glint/pm2_dac.c,v 1.26tsi Exp $ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <X11/Xarch.h>
#include "xf86.h"
#include "xf86_OSproc.h"

#include "xf86PciInfo.h"
#include "xf86Pci.h"

#include "glint_regs.h"
#include "glint.h"

#define INITIALFREQERR 100000
#define MINCLK 110000		/* VCO frequency range */
#define MAXCLK 250000

static unsigned long
PM2DAC_CalculateMNPCForClock
(
 unsigned long reqclock,		/* In kHz units */
 unsigned long refclock,		/* In kHz units */
 unsigned char *rm, 			/* M Out */
 unsigned char *rn, 			/* N Out */
 unsigned char *rp			/* P Out */
 )
{
    unsigned char	m, n, p;
    unsigned long	f;
    long		freqerr, lowestfreqerr = INITIALFREQERR;
    unsigned long  	clock,actualclock = 0;

    for (n = 2; n <= 14; n++) {
        for (m = 2; m != 0; m++) { /* this is a char, so this counts to 255 */
	    f = refclock * m / n;
	    if ( (f < MINCLK) || (f > MAXCLK) )
	    	continue;
	    for (p = 0; p <= 4; p++) {
	    	clock = f >> p;
		freqerr = reqclock - clock;
		if (freqerr < 0)
		    freqerr = -freqerr;
		if (freqerr < lowestfreqerr) {
		    *rn = n;
		    *rm = m;
		    *rp = p;
		    lowestfreqerr = freqerr;
		    actualclock = clock;
#ifdef DEBUG
	ErrorF("Best %ld diff %ld\n",actualclock,freqerr);
#endif
		}
	    }
	}
    }

    return(actualclock);
}

Bool
Permedia2Init(ScrnInfoPtr pScrn, DisplayModePtr mode)
{
    GLINTPtr pGlint = GLINTPTR(pScrn);
    GLINTRegPtr pReg = &pGlint->ModeReg[0];
    CARD32 temp1, temp2, temp3, temp4;

    pReg->glintRegs[Aperture0 >> 3] = 0;
    pReg->glintRegs[Aperture1 >> 3] = 0;
    pReg->glintRegs[PMFramebufferWriteMask >> 3] = 0xFFFFFFFF;
    pReg->glintRegs[PMBypassWriteMask >> 3] = 0xFFFFFFFF;

    pReg->glintRegs[DFIFODis >> 3] = 0;
    pReg->glintRegs[FIFODis >> 3] = 1;

    if (pGlint->UseBlockWrite)
	pReg->glintRegs[PMMemConfig >> 3] = GLINT_READ_REG(PMMemConfig) | 1<<21;


    temp1 = mode->CrtcHSyncStart - mode->CrtcHDisplay;
    temp2 = mode->CrtcVSyncStart - mode->CrtcVDisplay;
    temp3 = mode->CrtcHSyncEnd - mode->CrtcHSyncStart;
    temp4 = mode->CrtcVSyncEnd - mode->CrtcVSyncStart;

    pReg->glintRegs[PMHTotal >> 3] = Shiftbpp(pScrn,mode->CrtcHTotal);
    pReg->glintRegs[PMHsEnd >> 3] = Shiftbpp(pScrn, temp1 + temp3);
    pReg->glintRegs[PMHsStart >> 3] = Shiftbpp(pScrn, temp1);
    pReg->glintRegs[PMHbEnd >> 3] =
			Shiftbpp(pScrn,mode->CrtcHTotal-mode->CrtcHDisplay);
    pReg->glintRegs[PMScreenStride >> 3] =
			Shiftbpp(pScrn,pScrn->displayWidth>>1);

    pReg->glintRegs[PMVTotal >> 3] = mode->CrtcVTotal;
    pReg->glintRegs[PMVsEnd >> 3] = temp2 + temp4;
    pReg->glintRegs[PMVsStart >> 3] = temp2;
    pReg->glintRegs[PMVbEnd >> 3] = mode->CrtcVTotal - mode->CrtcVDisplay;

    /* The hw cursor needs /VSYNC to recognize vert retrace. We'll stick
       both sync lines to active high here and if needed invert them
       using the RAMDAC's MCR below. */
    pReg->glintRegs[PMVideoControl >> 3] =
	(1 << 5) | (1 << 3) | 1;

    if (pScrn->bitsPerPixel > 8) {
	/* When != 8bpp then we stick the RAMDAC into 64bit mode */
	/* And reduce the horizontal timings by half */
	pReg->glintRegs[PMVideoControl >> 3] |= 1<<16;
    	pReg->glintRegs[PMHTotal >> 3] >>= 1;
	pReg->glintRegs[PMHsEnd >> 3] >>= 1;
	pReg->glintRegs[PMHsStart >> 3] >>= 1;
	pReg->glintRegs[PMHbEnd >> 3] >>= 1;
    }

    pReg->glintRegs[VClkCtl >> 3] = (GLINT_READ_REG(VClkCtl) & 0xFFFFFFFC);
    pReg->glintRegs[PMScreenBase >> 3] = 0;
    pReg->glintRegs[PMHTotal >> 3] -= 1;
    pReg->glintRegs[PMHsStart >> 3] -= 1;
    pReg->glintRegs[PMVTotal >> 3] -= 1;

    pReg->glintRegs[ChipConfig >> 3] = GLINT_READ_REG(ChipConfig) & 0xFFFFFFDD;

    pReg->DacRegs[PM2DACIndexMDCR] = 0x00; /* Disable Overlay */

    {
	/* Get the programmable clock values */
    	unsigned char m,n,p;

	(void) PM2DAC_CalculateMNPCForClock(mode->Clock,pGlint->RefClock,
								&m,&n,&p);
	pReg->DacRegs[PM2DACIndexClockAM] = m;
	pReg->DacRegs[PM2DACIndexClockAN] = n;
	pReg->DacRegs[PM2DACIndexClockAP] = p|0x08;
    }

    if (pScrn->rgbBits == 8)
	pReg->DacRegs[PM2DACIndexMCR] = 0x02; /* 8bit DAC */
    else
        pReg->DacRegs[PM2DACIndexMCR] = 0x00; /* 6bit DAC */

    if (!(mode->Flags & V_PHSYNC))
        pReg->DacRegs[PM2DACIndexMCR] |= 0x04; /* invert hsync */
    if (!(mode->Flags & V_PVSYNC))
        pReg->DacRegs[PM2DACIndexMCR] |= 0x08; /* invert vsync */

    switch (pScrn->bitsPerPixel)
    {
    case 8:
	pReg->DacRegs[PM2DACIndexCMR] = PM2DAC_RGB | PM2DAC_GRAPHICS |
					PM2DAC_CI8;
    	break;
    case 16:
	if (pScrn->depth == 15) {
	      pReg->DacRegs[PM2DACIndexCMR] = PM2DAC_RGB | PM2DAC_TRUECOLOR|
				        PM2DAC_GRAPHICS | PM2DAC_5551;
	} else {
	    pReg->DacRegs[PM2DACIndexCMR] = PM2DAC_RGB | PM2DAC_TRUECOLOR|
				 	PM2DAC_GRAPHICS | PM2DAC_565;
	}
    	break;
    case 24:
	pReg->DacRegs[PM2DACIndexCMR] = PM2DAC_RGB | PM2DAC_TRUECOLOR|
				 	PM2DAC_GRAPHICS | PM2DAC_PACKED;
    	break;
    case 32:
	pReg->DacRegs[PM2DACIndexCMR] = PM2DAC_RGB |
				 	PM2DAC_GRAPHICS | PM2DAC_8888;
	if (pScrn->overlayFlags & OVERLAY_8_32_PLANAR) {
	    pReg->DacRegs[PM2DACIndexColorKeyControl] = 0x11;
	    pReg->DacRegs[PM2DACIndexColorKeyOverlay] = pScrn->colorKey;
	} else
	    pReg->DacRegs[PM2DACIndexCMR] |= PM2DAC_TRUECOLOR;
    	break;
    }

    return(TRUE);
}

void
Permedia2Save(ScrnInfoPtr pScrn, GLINTRegPtr glintReg)
{
    GLINTPtr pGlint = GLINTPTR(pScrn);
    int i;

    /* We can't rely on the vgahw layer copying the font information
     * back properly, due to problems with MMIO access to VGA space
     * so we memcpy the information using the slow routines */
    xf86SlowBcopy((CARD8*)pGlint->FbBase, (CARD8*)pGlint->VGAdata, 65536);

    glintReg->glintRegs[Aperture0 >> 3] = GLINT_READ_REG(Aperture0);
    glintReg->glintRegs[Aperture1 >> 3] = GLINT_READ_REG(Aperture1);
    glintReg->glintRegs[PMFramebufferWriteMask >> 3] =
					GLINT_READ_REG(PMFramebufferWriteMask);
    glintReg->glintRegs[PMBypassWriteMask >> 3]  = GLINT_READ_REG(PMBypassWriteMask);
    glintReg->glintRegs[DFIFODis >> 3]  = GLINT_READ_REG(DFIFODis);
    glintReg->glintRegs[FIFODis >> 3]  = GLINT_READ_REG(FIFODis);
    /* We only muck about with PMMemConfig, if user wants to */
    if (pGlint->UseBlockWrite)
	glintReg->glintRegs[PMMemConfig >> 3] = GLINT_READ_REG(PMMemConfig);
    glintReg->glintRegs[PMHTotal >> 3] = GLINT_READ_REG(PMHTotal);
    glintReg->glintRegs[PMHbEnd >> 3] = GLINT_READ_REG(PMHbEnd);
    glintReg->glintRegs[PMHbEnd >> 3] = GLINT_READ_REG(PMHgEnd);
    glintReg->glintRegs[PMScreenStride >> 3] = GLINT_READ_REG(PMScreenStride);
    glintReg->glintRegs[PMHsStart >> 3] = GLINT_READ_REG(PMHsStart);
    glintReg->glintRegs[PMHsEnd >> 3] = GLINT_READ_REG(PMHsEnd);
    glintReg->glintRegs[PMVTotal >> 3] = GLINT_READ_REG(PMVTotal);
    glintReg->glintRegs[PMVbEnd >> 3] = GLINT_READ_REG(PMVbEnd);
    glintReg->glintRegs[PMVsStart >> 3] = GLINT_READ_REG(PMVsStart);
    glintReg->glintRegs[PMVsEnd >> 3] = GLINT_READ_REG(PMVsEnd);
    glintReg->glintRegs[PMScreenBase >> 3] = GLINT_READ_REG(PMScreenBase);
    glintReg->glintRegs[PMVideoControl >> 3] = GLINT_READ_REG(PMVideoControl);
    glintReg->glintRegs[VClkCtl >> 3] = GLINT_READ_REG(VClkCtl);
    glintReg->glintRegs[ChipConfig >> 3] = GLINT_READ_REG(ChipConfig);

    for (i=0;i<768;i++) {
    	Permedia2ReadAddress(pScrn, i);
	glintReg->cmap[i] = Permedia2ReadData(pScrn);
    }

    glintReg->DacRegs[PM2DACIndexColorKeyOverlay] =
				Permedia2InIndReg(pScrn, PM2DACIndexColorKeyOverlay);
    glintReg->DacRegs[PM2DACIndexColorKeyControl] =
				Permedia2InIndReg(pScrn, PM2DACIndexColorKeyControl);
    glintReg->DacRegs[PM2DACIndexMCR] =
				Permedia2InIndReg(pScrn, PM2DACIndexMCR);
    glintReg->DacRegs[PM2DACIndexMDCR] =
				Permedia2InIndReg(pScrn, PM2DACIndexMDCR);
    glintReg->DacRegs[PM2DACIndexCMR] =
				Permedia2InIndReg(pScrn, PM2DACIndexCMR);

    glintReg->DacRegs[PM2DACIndexClockAM] =
				Permedia2InIndReg(pScrn, PM2DACIndexClockAM);
    glintReg->DacRegs[PM2DACIndexClockAN] =
				Permedia2InIndReg(pScrn, PM2DACIndexClockAN);
    glintReg->DacRegs[PM2DACIndexClockAP] =
				Permedia2InIndReg(pScrn, PM2DACIndexClockAP);
}

void
Permedia2Restore(ScrnInfoPtr pScrn, GLINTRegPtr glintReg)
{
    GLINTPtr pGlint = GLINTPTR(pScrn);
    int i;

    /* We can't rely on the vgahw layer copying the font information
     * back properly, due to problems with MMIO access to VGA space
     * so we memcpy the information using the slow routines */
    if (pGlint->STATE)
	xf86SlowBcopy((CARD8*)pGlint->VGAdata, (CARD8*)pGlint->FbBase, 65536);

#if 0
    GLINT_SLOW_WRITE_REG(0, ResetStatus);
    while(GLINT_READ_REG(ResetStatus) != 0) {
	xf86MsgVerb(X_INFO, 2, "Resetting Engine - Please Wait.\n");
    };
#endif

    GLINT_SLOW_WRITE_REG(0xFF, PM2DACReadMask);

    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[Aperture0 >> 3], Aperture0);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[Aperture1 >> 3], Aperture1);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMFramebufferWriteMask >> 3],
							PMFramebufferWriteMask);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMBypassWriteMask >> 3],
							PMBypassWriteMask);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[DFIFODis >> 3], DFIFODis);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[FIFODis >> 3], FIFODis);
    /* We only muck about with PMMemConfig, if user wants to */
    if (pGlint->UseBlockWrite)
    	GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMMemConfig >> 3],PMMemConfig);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMVideoControl >> 3],
								PMVideoControl);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMHbEnd >> 3], PMHgEnd);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMScreenBase >> 3], PMScreenBase);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[VClkCtl >> 3], VClkCtl);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMScreenStride >> 3],
								PMScreenStride);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMHTotal >> 3], PMHTotal);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMHbEnd >> 3], PMHbEnd);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMHsStart >> 3], PMHsStart);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMHsEnd >> 3], PMHsEnd);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMVTotal >> 3], PMVTotal);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMVbEnd >> 3], PMVbEnd);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMVsStart >> 3], PMVsStart);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[PMVsEnd >> 3], PMVsEnd);
    GLINT_SLOW_WRITE_REG(glintReg->glintRegs[ChipConfig >> 3], ChipConfig);

    Permedia2OutIndReg(pScrn, PM2DACIndexColorKeyOverlay, 0x00,
					glintReg->DacRegs[PM2DACIndexColorKeyOverlay]);
    Permedia2OutIndReg(pScrn, PM2DACIndexColorKeyControl, 0x00,
					glintReg->DacRegs[PM2DACIndexColorKeyControl]);
    Permedia2OutIndReg(pScrn, PM2DACIndexMCR, 0x00,
					glintReg->DacRegs[PM2DACIndexMCR]);
    Permedia2OutIndReg(pScrn, PM2DACIndexMDCR, 0x00,
					glintReg->DacRegs[PM2DACIndexMDCR]);
    Permedia2OutIndReg(pScrn, PM2DACIndexCMR, 0x00,
					glintReg->DacRegs[PM2DACIndexCMR]);

    Permedia2OutIndReg(pScrn, PM2DACIndexClockAM, 0x00,
					glintReg->DacRegs[PM2DACIndexClockAM]);
    Permedia2OutIndReg(pScrn, PM2DACIndexClockAN, 0x00,
					glintReg->DacRegs[PM2DACIndexClockAN]);
    Permedia2OutIndReg(pScrn, PM2DACIndexClockAP, 0x00,
					glintReg->DacRegs[PM2DACIndexClockAP]);

    for (i=0;i<768;i++) {
    	Permedia2WriteAddress(pScrn, i);
        Permedia2WriteData(pScrn, glintReg->cmap[i]);
    }
}

static void
Permedia2ShowCursor(ScrnInfoPtr pScrn)
{
    /* Enable cursor - X11 mode */
    Permedia2OutIndReg(pScrn, PM2DACCursorControl, 0x00, 0x43);
}

static void
Permedia2HideCursor(ScrnInfoPtr pScrn)
{
    /* Disable cursor */
    Permedia2OutIndReg(pScrn, PM2DACCursorControl, 0x00, 0x00);
}

static void
Permedia2LoadCursorImage(
    ScrnInfoPtr pScrn,
    unsigned char *src
)
{
    GLINTPtr pGlint = GLINTPTR(pScrn);
    int i;

    GLINT_SLOW_WRITE_REG(0x00, PM2DACWriteAddress);
    for (i=0; i<1024; i++) {
	GLINT_SLOW_WRITE_REG(*(src++), PM2DACCursorData);
    }
}

static void
Permedia2SetCursorPosition(
   ScrnInfoPtr pScrn,
   int x, int y
)
{
    GLINTPtr pGlint = GLINTPTR(pScrn);

    x += 64;
    y += 64;

    /* Output position - "only" 11 bits of location documented */

    GLINT_WRITE_REG(x & 0xFF,	   PM2DACCursorXLsb);
    GLINT_WRITE_REG((x>>8) & 0x07, PM2DACCursorXMsb);
    GLINT_WRITE_REG(y & 0xFF,	   PM2DACCursorYLsb);
    GLINT_WRITE_REG((y>>8) & 0x07, PM2DACCursorYMsb);
}

static void
Permedia2SetCursorColors(
   ScrnInfoPtr pScrn,
   int bg, int fg
)
{
    GLINTPtr pGlint = GLINTPTR(pScrn);
    /* The Permedia2 cursor is always 8 bits so shift 8, not 10 */

    GLINT_SLOW_WRITE_REG(1, PM2DACCursorColorAddress);
    /* Background color */
    GLINT_SLOW_WRITE_REG(bg >> 0, PM2DACCursorColorData);
    GLINT_SLOW_WRITE_REG(bg >> 8, PM2DACCursorColorData);
    GLINT_SLOW_WRITE_REG(bg >> 16, PM2DACCursorColorData);

    /* Foreground color */
    GLINT_SLOW_WRITE_REG(fg >> 0, PM2DACCursorColorData);
    GLINT_SLOW_WRITE_REG(fg >> 8, PM2DACCursorColorData);
    GLINT_SLOW_WRITE_REG(fg >> 16, PM2DACCursorColorData);
}

static Bool
Permedia2UseHWCursor(ScreenPtr pScr, CursorPtr pCurs)
{
    return TRUE;
}

Bool
Permedia2HWCursorInit(ScreenPtr pScreen)
{
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    GLINTPtr pGlint = GLINTPTR(pScrn);
    xf86CursorInfoPtr infoPtr;

    infoPtr = xf86CreateCursorInfoRec();
    if(!infoPtr) return FALSE;

    pGlint->CursorInfoRec = infoPtr;

    infoPtr->MaxWidth = 64;
    infoPtr->MaxHeight = 64;
    infoPtr->Flags = HARDWARE_CURSOR_TRUECOLOR_AT_8BPP |
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
		HARDWARE_CURSOR_BIT_ORDER_MSBFIRST |
#endif
		HARDWARE_CURSOR_SOURCE_MASK_NOT_INTERLEAVED;
    infoPtr->SetCursorColors = Permedia2SetCursorColors;
    infoPtr->SetCursorPosition = Permedia2SetCursorPosition;
    infoPtr->LoadCursorImage = Permedia2LoadCursorImage;
    infoPtr->HideCursor = Permedia2HideCursor;
    infoPtr->ShowCursor = Permedia2ShowCursor;
    infoPtr->UseHWCursor = Permedia2UseHWCursor;

    return(xf86InitCursor(pScreen, infoPtr));
}

/* I2C Functions */

void
Permedia2I2CUDelay(I2CBusPtr b, int usec)
{
    GLINTPtr pGlint = (GLINTPtr) b->DriverPrivate.ptr;
    CARD32 ct1 = GLINT_READ_REG(PMCount);
    CARD32 ct2 = usec * 100;

    if (GLINT_READ_REG(PMCount) != ct1)
	while ((GLINT_READ_REG(PMCount) - ct1) < ct2);
}

void
Permedia2I2CPutBits(I2CBusPtr b, int scl, int sda)
{
    GLINTPtr pGlint = (GLINTPtr) b->DriverPrivate.ptr;
    int r = (pGlint->DDCBus == b) ? PMDDCData : VSSerialBusControl;
    CARD32 v = GLINT_READ_REG(r) & ~(ClkOut | DataOut);

    if (scl > 0) v |= ClkOut;
    if (sda > 0) v |= DataOut;

    GLINT_WRITE_REG(v, r);
}

void
Permedia2I2CGetBits(I2CBusPtr b, int *scl, int *sda)
{
    GLINTPtr pGlint = (GLINTPtr) b->DriverPrivate.ptr;
    CARD32 v = GLINT_READ_REG((pGlint->DDCBus == b) ?
	    PMDDCData : VSSerialBusControl);

    *scl = (v & ClkIn) > 0;
    *sda = (v & DataIn) > 0;
}

void
Permedia2PreInit(ScrnInfoPtr pScrn)
{
#if defined(__alpha__)
    GLINTPtr pGlint = GLINTPTR(pScrn);

    /*
     * On Alpha, we have to init secondary PM2 cards, since
     * int10 cannot be run on the OEMed cards with VGA disable
     * jumpers.
     */
    if (!xf86IsPrimaryPci(pGlint->PciInfo)) {
	if ( IS_GLORIASYNERGY ) {

	    /* PM2DAC_CalculateMNPCForClock(80000, 14318, &m, &n, &p); */
	    Permedia2OutIndReg(pScrn, PM2DACIndexMemClockM, 0x00, 0x7b);
	    Permedia2OutIndReg(pScrn, PM2DACIndexMemClockN, 0x00, 0x0b);
	    Permedia2OutIndReg(pScrn, PM2DACIndexMemClockP, 0x00, 0x09);

	    GLINT_SLOW_WRITE_REG( 0x20, PMBootAddress);
	    GLINT_SLOW_WRITE_REG( 0xe6002021, PMMemConfig);
	}
    }
#endif /* __alpha__ */
}