115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
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/*
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* Copyright 1997 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of Marc Aurele La France not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Marc Aurele La France makes no representations
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* about the suitability of this software for any purpose. It is provided
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* "as-is" without express or implied warranty.
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*
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* MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
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* EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "ati.h"
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#include "atibank.h"
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#include "atimach64io.h"
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#include "atiwonderio.h"
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#ifndef AVOID_CPIO
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/*
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* ATIx8800SetBank --
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*
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* Set an ATI 28800's, 68800's or 88800's read and write bank numbers.
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*/
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void
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ATIx8800SetBank
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(
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ATIPtr pATI,
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unsigned int iBank
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)
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{
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(void)iBank; /* always called with iBank = 0 */
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ATIPutExtReg(0xB2U, 0x00U);
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ATIModifyExtReg(pATI, 0xAEU, -1, (CARD8)(~0x0FU), 0x00U);
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}
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/*
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* Functions to simulate a banked VGA aperture using a Mach64's small dual
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* paged apertures. There are two sets of these: one for packed modes, the
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* other for planar modes.
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*/
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static CARD32
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ATIMach64MassagePackedBankNumber
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(
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CARD8 iBank
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)
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{
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iBank <<= 1;
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return ((iBank + 1) << 16) | iBank;
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}
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/*
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* ATIMach64SetBankPacked --
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*
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* Set read and write bank numbers for small dual paged apertures.
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*/
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void
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ATIMach64SetBankPacked
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(
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ATIPtr pATI,
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unsigned int iBank
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)
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{
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CARD32 tmp = ATIMach64MassagePackedBankNumber(iBank);
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outr(MEM_VGA_RP_SEL, tmp);
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outr(MEM_VGA_WP_SEL, tmp);
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}
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static CARD32
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ATIMach64MassagePlanarBankNumber
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(
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CARD8 iBank
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)
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{
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iBank <<= 3;
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return ((iBank + 4) << 16) | iBank;
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}
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/*
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* ATIMach64SetBankPlanar --
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*
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* Set read and write bank numbers for small dual paged apertures.
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*/
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void
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ATIMach64SetBankPlanar
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(
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ATIPtr pATI,
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unsigned int iBank
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)
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{
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CARD32 tmp = ATIMach64MassagePlanarBankNumber(iBank);
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outr(MEM_VGA_RP_SEL, tmp);
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outr(MEM_VGA_WP_SEL, tmp);
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}
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#endif /* AVOID_CPIO */
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