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/*
* Copyright 1997 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
*
* 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 Marc Aurele La France not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Marc Aurele La France makes no representations
* about the suitability of this software for any purpose. It is provided
* "as-is" without express or implied warranty.
*
* MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
* EVENT SHALL MARC AURELE LA FRANCE 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ati.h"
#include "atibank.h"
#include "atimach64io.h"
#include "atiwonderio.h"
#ifndef AVOID_CPIO
/*
* ATIx8800SetBank --
*
* Set an ATI 28800's, 68800's or 88800's read and write bank numbers.
*/
void
ATIx8800SetBank
(
ATIPtr pATI,
unsigned int iBank
)
{
(void)iBank; /* always called with iBank = 0 */
ATIPutExtReg(0xB2U, 0x00U);
ATIModifyExtReg(pATI, 0xAEU, -1, (CARD8)(~0x0FU), 0x00U);
}
/*
* Functions to simulate a banked VGA aperture using a Mach64's small dual
* paged apertures. There are two sets of these: one for packed modes, the
* other for planar modes.
*/
static CARD32
ATIMach64MassagePackedBankNumber
(
CARD8 iBank
)
{
iBank <<= 1;
return ((iBank + 1) << 16) | iBank;
}
/*
* ATIMach64SetBankPacked --
*
* Set read and write bank numbers for small dual paged apertures.
*/
void
ATIMach64SetBankPacked
(
ATIPtr pATI,
unsigned int iBank
)
{
CARD32 tmp = ATIMach64MassagePackedBankNumber(iBank);
outr(MEM_VGA_RP_SEL, tmp);
outr(MEM_VGA_WP_SEL, tmp);
}
static CARD32
ATIMach64MassagePlanarBankNumber
(
CARD8 iBank
)
{
iBank <<= 3;
return ((iBank + 4) << 16) | iBank;
}
/*
* ATIMach64SetBankPlanar --
*
* Set read and write bank numbers for small dual paged apertures.
*/
void
ATIMach64SetBankPlanar
(
ATIPtr pATI,
unsigned int iBank
)
{
CARD32 tmp = ATIMach64MassagePlanarBankNumber(iBank);
outr(MEM_VGA_RP_SEL, tmp);
outr(MEM_VGA_WP_SEL, tmp);
}
#endif /* AVOID_CPIO */
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