From 02f377d5e2dd18537d0807ad63675a0970b5a37d Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 4 Nov 2011 08:57:20 +0100 Subject: xserver pixman mesa git update 4 nov 2011 --- .../hw/xfree86/os-support/shared/bios_mmap.c | 278 ++++++++++----------- 1 file changed, 137 insertions(+), 141 deletions(-) (limited to 'xorg-server/hw/xfree86/os-support/shared/bios_mmap.c') diff --git a/xorg-server/hw/xfree86/os-support/shared/bios_mmap.c b/xorg-server/hw/xfree86/os-support/shared/bios_mmap.c index a5887f578..b7b35d9db 100644 --- a/xorg-server/hw/xfree86/os-support/shared/bios_mmap.c +++ b/xorg-server/hw/xfree86/os-support/shared/bios_mmap.c @@ -1,141 +1,137 @@ -/* - * Copyright 1993 by David Wexelblat - * - * 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 David Wexelblat not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. David Wexelblat makes no representations - * about the suitability of this software for any purpose. It is provided - * "as is" without express or implied warranty. - * - * DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL DAVID WEXELBLAT 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_XORG_CONFIG_H -#include -#endif - -#include - -#include "xf86.h" -#include "xf86Priv.h" -#include "xf86_OSlib.h" - -#ifndef MAP_FAILED -#define MAP_FAILED ((void *)-1) -#endif - -/* - * Read BIOS via mmap()ing DEV_MEM - */ - -#ifndef __alpha__ -int -xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, - int Len) -{ - int fd; - unsigned char *ptr; - int psize; - int mlen; - - if ((fd = open(DEV_MEM, O_RDONLY)) < 0) - { - xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n", - DEV_MEM, strerror(errno)); - return -1; - } - psize = getpagesize(); - Offset += Base & (psize - 1); - Base &= ~(psize - 1); - mlen = (Offset + Len + psize - 1) & ~(psize - 1); - ptr = (unsigned char *)mmap((caddr_t)0, mlen, PROT_READ, - MAP_SHARED, fd, (off_t)Base); - if (ptr == MAP_FAILED) - { - xf86Msg(X_WARNING, "xf86ReadBIOS: %s mmap failed (%s)\n", - DEV_MEM, strerror(errno)); - close(fd); - return -1; - } - DebugF("xf86ReadBIOS: BIOS at 0x%08x has signature 0x%04x\n", - Base, ptr[0] | (ptr[1] << 8)); - (void)memcpy(Buf, (void *)(ptr + Offset), Len); - (void)munmap((caddr_t)ptr, mlen); - (void)close(fd); - return Len; -} - -#else /* __alpha__ */ - - /* - * We trick "mmap" into mapping BUS memory for us via BUS_BASE, - * which is the KSEG address of the start of the DENSE memory - * area. - */ - - /* - * NOTE: there prolly ought to be more validity checks and all - * re: boundaries and sizes and such... - */ - -#ifdef linux - -extern unsigned long _bus_base(void); -#define BUS_BASE _bus_base() - -#else - -extern u_int64_t dense_base(void); -#define BUS_BASE dense_base() - -#endif - -int -xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, - int Len) -{ - caddr_t base; - int fd; - int psize; - int mlen; - - if ((fd = open(DEV_MEM, O_RDONLY)) < 0) - { - xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n", - DEV_MEM, strerror(errno)); - return -1; - } - - psize = getpagesize(); - Offset += Base & (psize - 1); - Base &= ~(psize - 1); - mlen = (Offset + Len + psize - 1) & ~(psize - 1); - base = mmap((caddr_t)0, mlen, PROT_READ, - MAP_SHARED, fd, (off_t)(Base + BUS_BASE)); - - if (base == MAP_FAILED) - { - xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to mmap %s (%s)\n", - DEV_MEM, strerror(errno)); - return -1; - } - - xf86SlowBCopyFromBus((unsigned char *)(base+Offset), Buf, Len); - - munmap((caddr_t)base, mlen); - close(fd); - return Len; -} - -#endif /* __alpha__ */ +/* + * Copyright 1993 by David Wexelblat + * + * 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 David Wexelblat not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. David Wexelblat makes no representations + * about the suitability of this software for any purpose. It is provided + * "as is" without express or implied warranty. + * + * DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL DAVID WEXELBLAT 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_XORG_CONFIG_H +#include +#endif + +#include + +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" + +/* + * Read BIOS via mmap()ing DEV_MEM + */ + +#ifndef __alpha__ +int +xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, + int Len) +{ + int fd; + unsigned char *ptr; + int psize; + int mlen; + + if ((fd = open(DEV_MEM, O_RDONLY)) < 0) + { + xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n", + DEV_MEM, strerror(errno)); + return -1; + } + psize = getpagesize(); + Offset += Base & (psize - 1); + Base &= ~(psize - 1); + mlen = (Offset + Len + psize - 1) & ~(psize - 1); + ptr = (unsigned char *)mmap((caddr_t)0, mlen, PROT_READ, + MAP_SHARED, fd, (off_t)Base); + if (ptr == MAP_FAILED) + { + xf86Msg(X_WARNING, "xf86ReadBIOS: %s mmap failed (%s)\n", + DEV_MEM, strerror(errno)); + close(fd); + return -1; + } + DebugF("xf86ReadBIOS: BIOS at 0x%08x has signature 0x%04x\n", + Base, ptr[0] | (ptr[1] << 8)); + (void)memcpy(Buf, (void *)(ptr + Offset), Len); + (void)munmap((caddr_t)ptr, mlen); + (void)close(fd); + return Len; +} + +#else /* __alpha__ */ + + /* + * We trick "mmap" into mapping BUS memory for us via BUS_BASE, + * which is the KSEG address of the start of the DENSE memory + * area. + */ + + /* + * NOTE: there prolly ought to be more validity checks and all + * re: boundaries and sizes and such... + */ + +#ifdef linux + +extern unsigned long _bus_base(void); +#define BUS_BASE _bus_base() + +#else + +extern u_int64_t dense_base(void); +#define BUS_BASE dense_base() + +#endif + +int +xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, + int Len) +{ + caddr_t base; + int fd; + int psize; + int mlen; + + if ((fd = open(DEV_MEM, O_RDONLY)) < 0) + { + xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n", + DEV_MEM, strerror(errno)); + return -1; + } + + psize = getpagesize(); + Offset += Base & (psize - 1); + Base &= ~(psize - 1); + mlen = (Offset + Len + psize - 1) & ~(psize - 1); + base = mmap((caddr_t)0, mlen, PROT_READ, + MAP_SHARED, fd, (off_t)(Base + BUS_BASE)); + + if (base == MAP_FAILED) + { + xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to mmap %s (%s)\n", + DEV_MEM, strerror(errno)); + return -1; + } + + xf86SlowBCopyFromBus((unsigned char *)(base+Offset), Buf, Len); + + munmap((caddr_t)base, mlen); + close(fd); + return Len; +} + +#endif /* __alpha__ */ -- cgit v1.2.3