254 lines
6.9 KiB
C
254 lines
6.9 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bsd/ppc_video.c,v 1.6 2003/10/07 23:14:55 herrb Exp $ */
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/* $OpenBSD: arm_video.c,v 1.10 2013/06/07 17:28:52 matthieu Exp $ */
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/*
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* Copyright 1992 by Rich Murphey <Rich@Rice.edu>
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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 names of Rich Murphey and David Wexelblat
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* not be used in advertising or publicity pertaining to distribution of
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* the software without specific, written prior permission. Rich Murphey and
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* David Wexelblat make no representations about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*
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* RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL RICH MURPHEY OR DAVID WEXELBLAT BE LIABLE FOR
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* ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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/*
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* The ARM32 code here carries the following copyright:
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*
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* Copyright 1997
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* Digital Equipment Corporation. All rights reserved.
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* This software is furnished under license and may be used and copied only in
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* accordance with the following terms and conditions. Subject to these
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* conditions, you may download, copy, install, use, modify and distribute
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* this software in source and/or binary form. No title or ownership is
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* transferred hereby.
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*
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* 1) Any source code used, modified or distributed must reproduce and retain
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* this copyright notice and list of conditions as they appear in the
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* source file.
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*
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* 2) No right is granted to use any trade name, trademark, or logo of Digital
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* Equipment Corporation. Neither the "Digital Equipment Corporation"
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* name nor any trademark or logo of Digital Equipment Corporation may be
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* used to endorse or promote products derived from this software without
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* the prior written permission of Digital Equipment Corporation.
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*
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* 3) This software is provided "AS-IS" and any express or implied warranties,
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* including but not limited to, any implied warranties of merchantability,
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* fitness for a particular purpose, or non-infringement are disclaimed.
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* In no event shall DIGITAL be liable for any damages whatsoever, and in
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* particular, DIGITAL shall not be liable for special, indirect,
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* consequential, or incidental damages or damages for lost profits, loss
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* of revenue or loss of use, whether such damages arise in contract,
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* negligence, tort, under statute, in equity, at law or otherwise, even
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* if advised of the possibility of such damage.
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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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#include "xf86OSpriv.h"
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#include "bus/Pci.h"
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#ifndef MAP_FAILED
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#define MAP_FAILED ((caddr_t)-1)
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#endif
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#include <sys/param.h>
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#include <sys/sysctl.h>
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/***************************************************************************/
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/* Video Memory Mapping section */
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/***************************************************************************/
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#ifdef __OpenBSD__
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#undef DEV_MEM
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#define DEV_MEM "/dev/xf86"
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#endif
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static pointer ppcMapVidMem(int, unsigned long, unsigned long, int flags);
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static void ppcUnmapVidMem(int, pointer, unsigned long);
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void
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xf86OSInitVidMem(VidMemInfoPtr pVidMem)
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{
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pVidMem->linearSupported = TRUE;
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pVidMem->mapMem = ppcMapVidMem;
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pVidMem->unmapMem = ppcUnmapVidMem;
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pVidMem->initialised = TRUE;
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}
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volatile unsigned char *ioBase = MAP_FAILED;
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static pointer
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ppcMapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
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{
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int fd = xf86Info.consoleFd;
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pointer base;
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#ifdef DEBUG
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xf86MsgVerb(X_INFO, 3, "mapVidMem %lx, %lx, fd = %d",
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Base, Size, fd);
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#endif
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base = mmap(0, Size,
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(flags & VIDMEM_READONLY) ?
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PROT_READ : (PROT_READ | PROT_WRITE),
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MAP_SHARED, fd, Base);
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if (base == MAP_FAILED)
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FatalError("%s: could not mmap screen [s=%lx,a=%lx] (%s)",
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"xf86MapVidMem", Size, Base, strerror(errno));
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return base;
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}
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static void
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ppcUnmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
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{
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munmap(Base, Size);
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}
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static int kmem = -1;
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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 rv;
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if (Base < 0x80000000) {
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xf86Msg(X_WARNING, "No VGA Base=%#lx\n", Base);
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return 0;
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}
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if (kmem == -1) {
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kmem = open(DEV_MEM, 2);
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if (kmem == -1) {
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FatalError("xf86ReadBIOS: open %s", DEV_MEM);
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}
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}
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#ifdef DEBUG
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xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS() %lx %lx, %x\n",
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Base, Offset, Len);
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#endif
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lseek(kmem, Base + Offset, 0);
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rv = read(kmem, Buf, Len);
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return rv;
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}
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/*
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* Do all initialisation that need root privileges
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*/
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void
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xf86PrivilegedInit(void)
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{
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int mib[2];
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char buf[128];
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size_t len;
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mib[0] = CTL_HW;
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mib[1] = HW_MACHINE;
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len = sizeof(buf);
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if (sysctl(mib, 2, buf, &len, NULL, 0) < 0) {
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FatalError("Cannot get hw.machine");
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}
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if (strcmp(buf, "zaurus") != 0 &&
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strcmp(buf, "armish") != 0) {
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/* Not Zaurus */
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kmem = open(DEV_MEM, 2);
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if (kmem == -1) {
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ErrorF("errno: %d\n", errno);
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FatalError("xf86PrivilegedInit: open %s", DEV_MEM);
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}
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pci_system_init();
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}
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xf86OpenConsole();
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}
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#ifdef __VFP_FP__
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/*
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* force softfloat functions into binary,
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* yes the protos/ret are all bogus.
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*/
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arm_softfloat()
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{
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void __adddf3();
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void __addsf3();
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void __eqdf2();
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void __eqsf2();
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void __extendsfdf2();
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void __fixdfsi();
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void __fixsfsi();
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void __fixunsdfsi();
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void __fixunssfsi();
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void __floatsidf();
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void __floatsisf();
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void __gedf2();
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void __gesf2();
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void __gtdf2();
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void __gtsf2();
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void __ledf2();
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void __lesf2();
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void __ltdf2();
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void __ltsf2();
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void __nedf2();
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void __negdf2();
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void __negsf2();
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void __nesf2();
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void __subdf3();
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void __subsf3();
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void __truncdfsf2();
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__adddf3();
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__addsf3();
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__eqdf2();
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__eqsf2();
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__extendsfdf2();
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__fixdfsi();
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__fixsfsi();
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__fixunsdfsi();
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__fixunssfsi();
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__floatsidf();
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__floatsisf();
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__gedf2();
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__gesf2();
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__gtdf2();
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__gtsf2();
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__ledf2();
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__lesf2();
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__ltdf2();
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__ltsf2();
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__nedf2();
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__negdf2();
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__negsf2();
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__nesf2();
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__subdf3();
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__subsf3();
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__truncdfsf2();
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}
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#endif /* __VFP_FP__ */
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