49f77fff14
Save in a few special cases, _X_EXPORT should not be used in C source files. Instead, it should be used in headers, and the proper C source include that header. Some special cases are symbols that need to be shared between modules, but not expected to be used by external drivers, and symbols that are accessible via LoaderSymbol/dlopen. This patch also adds conditionally some new sdk header files, depending on extensions enabled. These files were added to match pattern for other extensions/modules, that is, have the headers "deciding" symbol visibility in the sdk. These headers are: o Xext/panoramiXsrv.h, Xext/panoramiX.h o fbpict.h (unconditionally) o vidmodeproc.h o mioverlay.h (unconditionally, used only by xaa) o xfixes.h (unconditionally, symbols required by dri2) LoaderSymbol and similar functions now don't have different prototypes, in loaderProcs.h and xf86Module.h, so that both headers can be included, without the need of defining IN_LOADER. xf86NewInputDevice() device prototype readded to xf86Xinput.h, but not exported (and with a comment about it).
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/*
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* Copyright 1993 by David Wexelblat <dwex@goblin.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
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of David Wexelblat not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. David Wexelblat 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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* DAVID WEXELBLAT 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 DAVID WEXELBLAT 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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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <X11/X.h>
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *)-1)
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#endif
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/*
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* Read BIOS via mmap()ing DEV_MEM
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*/
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#ifndef __alpha__
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int
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xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
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int Len)
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{
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int fd;
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unsigned char *ptr;
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int psize;
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int mlen;
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if ((fd = open(DEV_MEM, O_RDONLY)) < 0)
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{
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xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n",
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DEV_MEM, strerror(errno));
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return(-1);
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}
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psize = getpagesize();
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Offset += Base & (psize - 1);
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Base &= ~(psize - 1);
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mlen = (Offset + Len + psize - 1) & ~(psize - 1);
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ptr = (unsigned char *)mmap((caddr_t)0, mlen, PROT_READ,
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MAP_SHARED, fd, (off_t)Base);
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if (ptr == MAP_FAILED)
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{
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xf86Msg(X_WARNING, "xf86ReadBIOS: %s mmap failed (%s)\n",
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DEV_MEM, strerror(errno));
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close(fd);
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return(-1);
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}
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#ifdef DEBUG
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ErrorF("xf86ReadBIOS: BIOS at 0x%08x has signature 0x%04x\n",
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Base, ptr[0] | (ptr[1] << 8));
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#endif
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(void)memcpy(Buf, (void *)(ptr + Offset), Len);
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(void)munmap((caddr_t)ptr, mlen);
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(void)close(fd);
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return(Len);
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}
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#else /* __alpha__ */
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/*
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* We trick "mmap" into mapping BUS memory for us via BUS_BASE,
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* which is the KSEG address of the start of the DENSE memory
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* area.
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*/
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/*
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* NOTE: there prolly ought to be more validity checks and all
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* re: boundaries and sizes and such...
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*/
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#ifdef linux
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extern unsigned long _bus_base(void);
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#define BUS_BASE _bus_base()
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#else
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extern u_int64_t dense_base(void);
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#define BUS_BASE dense_base()
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#endif
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int
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xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
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int Len)
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{
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caddr_t base;
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int fd;
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int psize;
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int mlen;
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if ((fd = open(DEV_MEM, O_RDONLY)) < 0)
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{
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xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n",
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DEV_MEM, strerror(errno));
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return(-1);
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}
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psize = getpagesize();
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Offset += Base & (psize - 1);
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Base &= ~(psize - 1);
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mlen = (Offset + Len + psize - 1) & ~(psize - 1);
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base = mmap((caddr_t)0, mlen, PROT_READ,
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MAP_SHARED, fd, (off_t)(Base + BUS_BASE));
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if (base == MAP_FAILED)
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{
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xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to mmap %s (%s)\n",
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DEV_MEM, strerror(errno));
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return(-1);
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}
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xf86SlowBCopyFromBus((unsigned char *)(base+Offset), Buf, Len);
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munmap((caddr_t)base, mlen);
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close(fd);
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return(Len);
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}
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#endif /* __alpha__ */
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