235 lines
6.7 KiB
C
235 lines
6.7 KiB
C
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_XORG_CONFIG_H
|
|
#include <xorg-config.h>
|
|
#endif
|
|
|
|
#include <X11/X.h>
|
|
#include "xf86.h"
|
|
#include "xf86Priv.h"
|
|
|
|
#include <sys/param.h>
|
|
#ifndef __NetBSD__
|
|
#include <sys/sysctl.h>
|
|
#endif
|
|
|
|
#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
|
|
|
|
#ifndef __NetBSD__
|
|
extern unsigned long dense_base(void);
|
|
#else /* __NetBSD__ */
|
|
static struct alpha_bus_window *abw;
|
|
static int abw_count = -1;
|
|
|
|
static void
|
|
init_abw(void)
|
|
{
|
|
if (abw_count < 0) {
|
|
abw_count = alpha_bus_getwindows(ALPHA_BUS_TYPE_PCI_MEM, &abw);
|
|
if (abw_count <= 0)
|
|
FatalError("init_abw: alpha_bus_getwindows failed\n");
|
|
}
|
|
}
|
|
|
|
static unsigned long
|
|
dense_base(void)
|
|
{
|
|
if (abw_count < 0)
|
|
init_abw();
|
|
|
|
/* XXX check abst_flags for ABST_DENSE just to be safe? */
|
|
xf86Msg(X_INFO, "dense base = %#lx\n", abw[0].abw_abst.abst_sys_start); /* XXXX */
|
|
return abw[0].abw_abst.abst_sys_start;
|
|
}
|
|
|
|
#endif /* __NetBSD__ */
|
|
|
|
#define BUS_BASE dense_base()
|
|
|
|
/***************************************************************************/
|
|
/* Video Memory Mapping section */
|
|
/***************************************************************************/
|
|
|
|
#ifdef __OpenBSD__
|
|
#define SYSCTL_MSG "\tCheck that you have set 'machdep.allowaperture=1'\n"\
|
|
"\tin /etc/sysctl.conf and reboot your machine\n" \
|
|
"\trefer to xf86(4) for details"
|
|
#endif
|
|
|
|
static int devMemFd = -1;
|
|
|
|
#ifdef HAS_APERTURE_DRV
|
|
#define DEV_APERTURE "/dev/xf86"
|
|
#endif
|
|
|
|
/*
|
|
* 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;
|
|
|
|
#ifdef HAS_APERTURE_DRV
|
|
/* Try the aperture driver first */
|
|
if ((fd = open(DEV_APERTURE, 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;
|
|
xf86Msg(X_INFO, "checkDevMem: using aperture driver %s\n",
|
|
DEV_APERTURE);
|
|
return;
|
|
}
|
|
else {
|
|
if (warn) {
|
|
xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n",
|
|
DEV_APERTURE, strerror(errno));
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
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 {
|
|
if (warn) {
|
|
xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n",
|
|
DEV_MEM, strerror(errno));
|
|
}
|
|
}
|
|
}
|
|
if (warn) {
|
|
#ifndef HAS_APERTURE_DRV
|
|
xf86Msg(X_WARNING, "checkDevMem: failed to open/mmap %s (%s)\n",
|
|
DEV_MEM, strerror(errno));
|
|
#else
|
|
#ifndef __OpenBSD__
|
|
xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n"
|
|
"\t(%s)\n", DEV_APERTURE, DEV_MEM, strerror(errno));
|
|
#else /* __OpenBSD__ */
|
|
xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n"
|
|
"\t(%s)\n%s", DEV_APERTURE, DEV_MEM, strerror(errno),
|
|
SYSCTL_MSG);
|
|
#endif /* __OpenBSD__ */
|
|
#endif
|
|
xf86ErrorF("\tlinear framebuffer access unavailable\n");
|
|
}
|
|
return;
|
|
}
|
|
|
|
void
|
|
xf86OSInitVidMem(VidMemInfoPtr pVidMem)
|
|
{
|
|
checkDevMem(TRUE);
|
|
|
|
pVidMem->initialised = TRUE;
|
|
}
|
|
|
|
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__)
|
|
|
|
extern int ioperm(unsigned long from, unsigned long num, int on);
|
|
|
|
Bool
|
|
xf86EnableIO()
|
|
{
|
|
if (!ioperm(0, 65536, TRUE))
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
xf86DisableIO()
|
|
{
|
|
return;
|
|
}
|
|
|
|
#endif /* __FreeBSD_kernel__ || __OpenBSD__ */
|
|
|
|
#ifdef USE_ALPHA_PIO
|
|
|
|
Bool
|
|
xf86EnableIO()
|
|
{
|
|
alpha_pci_io_enable(1);
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
xf86DisableIO()
|
|
{
|
|
alpha_pci_io_enable(0);
|
|
}
|
|
|
|
#endif /* USE_ALPHA_PIO */
|
|
|
|
extern int readDense8(void *Base, register unsigned long Offset);
|
|
extern int readDense16(void *Base, register unsigned long Offset);
|
|
extern int readDense32(void *Base, register unsigned long Offset);
|
|
extern void
|
|
writeDense8(int Value, void *Base, register unsigned long Offset);
|
|
extern void
|
|
writeDense16(int Value, void *Base, register unsigned long Offset);
|
|
extern void
|
|
writeDense32(int Value, void *Base, register unsigned long Offset);
|
|
|
|
void (*xf86WriteMmio8) (int Value, void *Base, unsigned long Offset)
|
|
= writeDense8;
|
|
void (*xf86WriteMmio16) (int Value, void *Base, unsigned long Offset)
|
|
= writeDense16;
|
|
void (*xf86WriteMmio32) (int Value, void *Base, unsigned long Offset)
|
|
= writeDense32;
|
|
int (*xf86ReadMmio8) (void *Base, unsigned long Offset)
|
|
= readDense8;
|
|
int (*xf86ReadMmio16) (void *Base, unsigned long Offset)
|
|
= readDense16;
|
|
int (*xf86ReadMmio32) (void *Base, unsigned long Offset)
|
|
= readDense32;
|