diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/shared/bios_mmap.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xfree86/os-support/shared/bios_mmap.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/shared/bios_mmap.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/shared/bios_mmap.c deleted file mode 100644 index b4ff8c31f..000000000 --- a/nx-X11/programs/Xserver/hw/xfree86/os-support/shared/bios_mmap.c +++ /dev/null @@ -1,164 +0,0 @@ -/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/bios_mmap.c,v 1.8 2000/11/19 16:38:06 tsi Exp $ */ -/* - * Copyright 1993 by David Wexelblat <dwex@goblin.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 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. - * - */ -/* $XConsortium: bios_V4mmap.c /main/4 1996/02/21 17:54:27 kaleb $ */ - -#ifdef HAVE_XORG_CONFIG_H -#include <xorg-config.h> -#endif - -#include <X11/X.h> - -#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 = xf86getpagesize(); - 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); - } -#ifdef DEBUG - ErrorF("xf86ReadBIOS: BIOS at 0x%08x has signature 0x%04x\n", - Base, ptr[0] | (ptr[1] << 8)); -#endif - (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... - */ - -/* - * The Jensen lacks dense memory, thus we have to address the bus via - * the sparse addressing scheme. - * - * Martin Ostermann (ost@comnets.rwth-aachen.de) - Apr.-Sep. 1996 - */ - -#ifdef linux - -#ifdef TEST_JENSEN_CODE /* define to test the Sparse addressing on a non-Jensen */ -#define SPARSE (5) -#define isJensen (1) -#else -#define isJensen (!_bus_base()) -#define SPARSE (7) -#endif - -extern unsigned long _bus_base(void); -extern unsigned long _bus_base_sparse(void); -#define BUS_BASE (isJensen ? _bus_base_sparse() : _bus_base()) -#define JENSEN_SHIFT(x) (isJensen ? ((long)x<<SPARSE) : (long)x) - -#else - -extern u_int64_t dense_base(void); -#define BUS_BASE dense_base() -#define JENSEN_SHIFT(x) ((long) x) - -#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 = xf86getpagesize(); - Offset += Base & (psize - 1); - Base &= ~(psize - 1); - mlen = (Offset + Len + psize - 1) & ~(psize - 1); - base = mmap((caddr_t)0, JENSEN_SHIFT(mlen), PROT_READ, - MAP_SHARED, fd, (off_t)(JENSEN_SHIFT(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+JENSEN_SHIFT(Offset)), - Buf, Len); - - munmap((caddr_t)JENSEN_SHIFT(base), JENSEN_SHIFT(mlen)); - close(fd); - return(Len); -} - -#endif /* __alpha__ */ |