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Diffstat (limited to 'src/atibank.c')
| -rw-r--r-- | src/atibank.c | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/src/atibank.c b/src/atibank.c new file mode 100644 index 0000000..82d591a --- /dev/null +++ b/src/atibank.c @@ -0,0 +1,409 @@ +/* $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 */ |