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-/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atibank.c,v 1.12 2003/01/01 19:16:30 tsi Exp $ */
-/*
- * Copyright 1997 through 2003 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.
- */
-
-#include "ati.h"
-#include "atibank.h"
-#include "atimach64io.h"
-#include "atiwonderio.h"
-
-#ifndef AVOID_CPIO
-
-/*
- * ATI VGA Wonder V3 adapters use an ATI 18800 chip and are single-banked.
- * Bank selection is done with bits 0x1E of ATI extended VGA register index
- * 0xB2.
- */
-
-/*
- * ATIV3SetBank --
- *
- * Set an ATI 18800's bank number.
- */
-void
-ATIV3SetBank
-(
- ATIPtr pATI,
- unsigned int iBank
-)
-{
- ATIModifyExtReg(pATI, 0xB2U, -1, (CARD8)(~0x1EU), SetBits(iBank, 0x1EU));
-}
-
-/*
- * ATIV3SetReadWrite --
- *
- * Set an ATI 18800's bank number.
- */
-int
-ATIV3SetReadWrite
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIPtr pATI = ATIPTR(XF86SCRNINFO(pScreen));
-
- ATIModifyExtReg(pATI, 0xB2U, -1, (CARD8)(~0x1EU), SetBits(iBank, 0x1EU));
- return 0;
-}
-
-/*
- * ATI VGA Wonder V4 and V5 adapters use an ATI 18800-1 chip. Bank selection
- * is done with ATI extended VGA register index 0xB2. The format is:
- *
- * 0xE0 - Read bank select bits 0x07
- * 0x1E - Write bank select bits 0x0F
- * 0x01 - Read bank select bit 0x08.
- */
-
-/*
- * ATIV4V5SetBank --
- *
- * Set an ATI 18800-1's read and write bank numbers.
- */
-void
-ATIV4V5SetBank
-(
- ATIPtr pATI,
- unsigned int iBank
-)
-{
- pATI->B2Reg = SetBits(iBank, 0x1EU) | SetBits(iBank, 0xE0U) |
- SetBits(GetBits(iBank, 0x08U), 0x01U);
- ATIPutExtReg(0xB2U, pATI->B2Reg);
-}
-
-/*
- * ATIV4V5SetRead --
- *
- * Set an ATI 18800-1's read bank number.
- */
-int
-ATIV4V5SetRead
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIPtr pATI = ATIPTR(XF86SCRNINFO(pScreen));
- CARD8 B2Reg = (pATI->B2Reg & 0x1EU) | SetBits(iBank, 0xE0U) |
- SetBits(GetBits(iBank, 0x08U), 0x01U);
-
- if (B2Reg != pATI->B2Reg)
- {
- ATIPutExtReg(0xB2U, B2Reg);
- pATI->B2Reg = B2Reg;
- }
-
- return 0;
-}
-
-/*
- * ATIV4V5SetWrite --
- *
- * Set an ATI 18800-1's write bank number.
- */
-int
-ATIV4V5SetWrite
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIPtr pATI = ATIPTR(XF86SCRNINFO(pScreen));
- CARD8 B2Reg = (pATI->B2Reg & 0xE1U) | SetBits(iBank, 0x1EU);
-
- if (B2Reg != pATI->B2Reg)
- {
- ATIPutExtReg(0xB2U, B2Reg);
- pATI->B2Reg = B2Reg;
- }
- return 0;
-}
-
-/*
- * ATIV4V5SetReadWrite --
- *
- * Set an ATI 18800-1's read and write bank numbers.
- */
-int
-ATIV4V5SetReadWrite
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIV4V5SetBank(ATIPTR(XF86SCRNINFO(pScreen)), iBank);
- return 0;
-}
-
-/*
- * In addition to ATI extended register index 0xB2, 28800's, 68800's and
- * 88800's define banking bits in bits 0x0F of ATI extended VGA register index
- * 0xAE. These are only needed for adapters with more than 1MB of video
- * memory, and it is questionable whether or not they are actually implemented
- * by 28800's and 88800's. ATI extended VGA register index 0xAE is defined as
- * follows:
- *
- * 0xF0 - reserved
- * 0x0C - read bank select bits 0x30
- * 0x03 - write bank select bits 0x30
- */
-
-/*
- * ATIx8800SetBank --
- *
- * Set an ATI 28800's, 68800's or 88800's read and write bank numbers.
- */
-void
-ATIx8800SetBank
-(
- ATIPtr pATI,
- unsigned int iBank
-)
-{
- ATIV4V5SetBank(pATI, iBank);
- iBank = GetBits(iBank, 0x30U);
- ATIModifyExtReg(pATI, 0xAEU, -1, (CARD8)(~0x0FU),
- SetBits(iBank, 0x03U) | SetBits(iBank, 0x0CU));
-}
-
-/*
- * ATIx8800SetRead --
- *
- * Set an ATI 28800's, 68800's or 88800's read bank numbers.
- */
-int
-ATIx8800SetRead
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- (void)ATIV4V5SetRead(pScreen, iBank);
- ATIModifyExtReg(ATIPTR(XF86SCRNINFO(pScreen)), 0xAEU, -1, (CARD8)(~0x0CU),
- SetBits(GetBits(iBank, 0x30U), 0x0CU));
- return 0;
-}
-
-/*
- * ATIx8800SetWrite --
- *
- * Set an ATI 28800's, 68800's or 88800's write bank numbers.
- */
-int
-ATIx8800SetWrite
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- (void)ATIV4V5SetWrite(pScreen, iBank);
- ATIModifyExtReg(ATIPTR(XF86SCRNINFO(pScreen)), 0xAEU, -1, (CARD8)(~0x03U),
- SetBits(GetBits(iBank, 0x30U), 0x03U));
- return 0;
-}
-
-/*
- * ATIx8800SetReadWrite --
- *
- * Set an ATI 28800's, 68800's or 88800's read and write bank numbers.
- */
-int
-ATIx8800SetReadWrite
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIx8800SetBank(ATIPTR(XF86SCRNINFO(pScreen)), iBank);
- return 0;
-}
-
-/*
- * 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);
-}
-
-/*
- * ATIMach64SetReadPacked --
- *
- * Set read bank number for small dual paged apertures.
- */
-int
-ATIMach64SetReadPacked
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIPtr pATI = ATIPTR(XF86SCRNINFO(pScreen));
-
- outr(MEM_VGA_RP_SEL, ATIMach64MassagePackedBankNumber(iBank));
- return 0;
-}
-
-/*
- * ATIMach64SetWritePacked --
- *
- * Set write bank number for small dual paged apertures.
- */
-int
-ATIMach64SetWritePacked
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIPtr pATI = ATIPTR(XF86SCRNINFO(pScreen));
-
- outr(MEM_VGA_WP_SEL, ATIMach64MassagePackedBankNumber(iBank));
- return 0;
-}
-
-/*
- * ATIMach64SetReadWritePacked --
- *
- * Set read and write bank numbers for small dual paged apertures.
- */
-int
-ATIMach64SetReadWritePacked
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIMach64SetBankPacked(ATIPTR(XF86SCRNINFO(pScreen)), iBank);
- return 0;
-}
-
-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);
-}
-
-/*
- * ATIMach64SetReadPlanar --
- *
- * Set read bank number for small dual paged apertures.
- */
-int
-ATIMach64SetReadPlanar
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIPtr pATI = ATIPTR(XF86SCRNINFO(pScreen));
-
- outr(MEM_VGA_RP_SEL, ATIMach64MassagePlanarBankNumber(iBank));
- return 0;
-}
-
-/*
- * ATIMach64SetWritePlanar --
- *
- * Set write bank number for small dual paged apertures.
- */
-int
-ATIMach64SetWritePlanar
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIPtr pATI = ATIPTR(XF86SCRNINFO(pScreen));
-
- outr(MEM_VGA_WP_SEL, ATIMach64MassagePlanarBankNumber(iBank));
- return 0;
-}
-
-/*
- * ATIMach64SetReadWritePlanar --
- *
- * Set read and write bank numbers for small dual paged apertures.
- */
-int
-ATIMach64SetReadWritePlanar
-(
- ScreenPtr pScreen,
- unsigned int iBank
-)
-{
- ATIMach64SetBankPlanar(ATIPTR(XF86SCRNINFO(pScreen)), iBank);
- return 0;
-}
-
-#endif /* AVOID_CPIO */
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