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/*
* Copyright 1992 by Rich Murphey <Rich@Rice.edu>
* 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 names of Rich Murphey and David Wexelblat
* not be used in advertising or publicity pertaining to distribution of
* the software without specific, written prior permission. Rich Murphey and
* David Wexelblat make no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RICH MURPHEY OR 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.
*
*/
/*
* The ARM32 code here carries the following copyright:
*
* Copyright 1997
* Digital Equipment Corporation. All rights reserved.
* This software is furnished under license and may be used and copied only in
* accordance with the following terms and conditions. Subject to these
* conditions, you may download, copy, install, use, modify and distribute
* this software in source and/or binary form. No title or ownership is
* transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce and retain
* this copyright notice and list of conditions as they appear in the
* source file.
*
* 2) No right is granted to use any trade name, trademark, or logo of Digital
* Equipment Corporation. Neither the "Digital Equipment Corporation"
* name nor any trademark or logo of Digital Equipment Corporation may be
* used to endorse or promote products derived from this software without
* the prior written permission of Digital Equipment Corporation.
*
* 3) This software is provided "AS-IS" and any express or implied warranties,
* including but not limited to, any implied warranties of merchantability,
* fitness for a particular purpose, or non-infringement are disclaimed.
* In no event shall DIGITAL be liable for any damages whatsoever, and in
* particular, DIGITAL shall not be liable for special, indirect,
* consequential, or incidental damages or damages for lost profits, loss
* of revenue or loss of use, whether such damages arise in contract,
* negligence, tort, under statute, in equity, at law or otherwise, even
* if advised of the possibility of such damage.
*
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <X11/X.h>
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "xf86OSpriv.h"
#if defined(__NetBSD__) && !defined(MAP_FILE)
#define MAP_FLAGS MAP_SHARED
#else
#define MAP_FLAGS (MAP_FILE | MAP_SHARED)
#endif
#define BUS_BASE 0L
#define BUS_BASE_BWX 0L
/***************************************************************************/
/* Video Memory Mapping section */
/***************************************************************************/
static int devMemFd = -1;
/*
* Check if /dev/mem can be mmap'd. If it can't print a warning when
* "warn" is TRUE.
*/
static void
checkDevMem(Bool warn)
{
static Bool devMemChecked = FALSE;
int fd;
void *base;
if (devMemChecked)
return;
devMemChecked = TRUE;
if ((fd = open(DEV_MEM, O_RDWR)) >= 0) {
/* Try to map a page at the VGA address */
base = mmap((caddr_t) 0, 4096, PROT_READ | PROT_WRITE,
MAP_FLAGS, fd, (off_t) 0xA0000 + BUS_BASE);
if (base != MAP_FAILED) {
munmap((caddr_t) base, 4096);
devMemFd = fd;
return;
}
else {
/* This should not happen */
if (warn) {
xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n",
DEV_MEM, strerror(errno));
}
return;
}
}
if (warn) {
xf86Msg(X_WARNING, "checkDevMem: failed to open %s (%s)\n",
DEV_MEM, strerror(errno));
}
return;
}
void
xf86OSInitVidMem(VidMemInfoPtr pVidMem)
{
checkDevMem(TRUE);
pVidMem->initialised = TRUE;
}
#ifdef USE_DEV_IO
static int IoFd = -1;
Bool
xf86EnableIO()
{
if (IoFd >= 0)
return TRUE;
if ((IoFd = open("/dev/io", O_RDWR)) == -1) {
xf86Msg(X_WARNING, "xf86EnableIO: "
"Failed to open /dev/io for extended I/O\n");
return FALSE;
}
return TRUE;
}
void
xf86DisableIO()
{
if (IoFd < 0)
return;
close(IoFd);
IoFd = -1;
return;
}
#endif
#if defined(USE_ARC_MMAP) || defined(__arm32__)
Bool
xf86EnableIO()
{
int fd;
void *base;
if (ExtendedEnabled)
return TRUE;
if ((fd = open("/dev/ttyC0", O_RDWR)) >= 0) {
/* Try to map a page at the pccons I/O space */
base = (void *) mmap((caddr_t) 0, 65536, PROT_READ | PROT_WRITE,
MAP_FLAGS, fd, (off_t) 0x0000);
if (base != (void *) -1) {
IOPortBase = base;
}
else {
xf86Msg(X_WARNING, "EnableIO: failed to mmap %s (%s)\n",
"/dev/ttyC0", strerror(errno));
return FALSE;
}
}
else {
xf86Msg("EnableIO: failed to open %s (%s)\n",
"/dev/ttyC0", strerror(errno));
return FALSE;
}
ExtendedEnabled = TRUE;
return TRUE;
}
void
xf86DisableIO()
{
return;
}
#endif /* USE_ARC_MMAP */
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