/* * Copyright 1992 by Rich Murphey * Copyright 1993 by David Wexelblat * * 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 #endif #include #include "xf86.h" #include "xf86Priv.h" #include #include #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 #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" #define SYSCTL_MSG2 \ "Check that you have set 'machdep.allowaperture=2'\n" \ "\tin /etc/sysctl.conf and reboot your machine\n" \ "\trefer to xf86(4) for details" #endif /***************************************************************************/ /* Video Memory Mapping section */ /***************************************************************************/ static Bool useDevMem = FALSE; 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; 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); if (base != MAP_FAILED) { munmap((caddr_t) base, 4096); devMemFd = fd; useDevMem = TRUE; return; } else { /* This should not happen */ if (warn) { xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n", DEV_MEM, strerror(errno)); } useDevMem = FALSE; return; } } #ifndef HAS_APERTURE_DRV if (warn) { xf86Msg(X_WARNING, "checkDevMem: failed to open %s (%s)\n", DEV_MEM, strerror(errno)); } useDevMem = FALSE; return; #else /* Failed to open /dev/mem, try the aperture driver */ 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); if (base != MAP_FAILED) { munmap((caddr_t) base, 4096); devMemFd = fd; useDevMem = TRUE; 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)); } } } else { if (warn) { #ifndef __OpenBSD__ xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n" "\t(%s)\n", DEV_MEM, DEV_APERTURE, strerror(errno)); #else /* __OpenBSD__ */ xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n" "\t(%s)\n%s", DEV_MEM, DEV_APERTURE, strerror(errno), SYSCTL_MSG); #endif /* __OpenBSD__ */ } } useDevMem = FALSE; return; #endif } void xf86OSInitVidMem(VidMemInfoPtr pVidMem) { checkDevMem(TRUE); pci_system_init_dev_mem(devMemFd); pVidMem->initialised = TRUE; } #ifdef USE_I386_IOPL /***************************************************************************/ /* I/O Permissions section */ /***************************************************************************/ static Bool ExtendedEnabled = FALSE; Bool xf86EnableIO() { if (ExtendedEnabled) return TRUE; if (i386_iopl(TRUE) < 0) { #ifndef __OpenBSD__ xf86Msg(X_WARNING, "%s: Failed to set IOPL for extended I/O", "xf86EnableIO"); #else xf86Msg(X_WARNING, "%s: Failed to set IOPL for extended I/O\n%s", "xf86EnableIO", SYSCTL_MSG); #endif return FALSE; } ExtendedEnabled = TRUE; return TRUE; } void xf86DisableIO() { if (!ExtendedEnabled) return; i386_iopl(FALSE); ExtendedEnabled = FALSE; return; } #endif /* USE_I386_IOPL */ #ifdef USE_AMD64_IOPL #ifdef __NetBSD__ #define amd64_iopl(x) x86_64_iopl(x) #endif /***************************************************************************/ /* I/O Permissions section */ /***************************************************************************/ static Bool ExtendedEnabled = FALSE; Bool xf86EnableIO() { if (ExtendedEnabled) return TRUE; if (amd64_iopl(TRUE) < 0) { #ifndef __OpenBSD__ xf86Msg(X_WARNING, "%s: Failed to set IOPL for extended I/O", "xf86EnableIO"); #else xf86Msg(X_WARNING, "%s: Failed to set IOPL for extended I/O\n%s", "xf86EnableIO", SYSCTL_MSG); #endif return FALSE; } ExtendedEnabled = TRUE; return TRUE; } void xf86DisableIO() { if (!ExtendedEnabled) return; if (amd64_iopl(FALSE) == 0) { ExtendedEnabled = FALSE; } /* Otherwise, the X server has revoqued its root uid, and thus cannot give up IO privileges any more */ return; } #endif /* USE_AMD64_IOPL */ #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"); return FALSE; } return TRUE; } void xf86DisableIO() { if (IoFd < 0) return; close(IoFd); IoFd = -1; return; } #endif #ifdef __NetBSD__ /***************************************************************************/ /* Set TV output mode */ /***************************************************************************/ void xf86SetTVOut(int mode) { switch (xf86Info.consType) { #ifdef PCCONS_SUPPORT case PCCONS:{ if (ioctl(xf86Info.consoleFd, CONSOLE_X_TV_ON, &mode) < 0) { xf86Msg(X_WARNING, "xf86SetTVOut: Could not set console to TV output, %s\n", strerror(errno)); } } break; #endif /* PCCONS_SUPPORT */ default: FatalError("Xf86SetTVOut: Unsupported console"); break; } return; } void xf86SetRGBOut() { switch (xf86Info.consType) { #ifdef PCCONS_SUPPORT case PCCONS:{ if (ioctl(xf86Info.consoleFd, CONSOLE_X_TV_OFF, 0) < 0) { xf86Msg(X_WARNING, "xf86SetTVOut: Could not set console to RGB output, %s\n", strerror(errno)); } } break; #endif /* PCCONS_SUPPORT */ default: FatalError("Xf86SetTVOut: Unsupported console"); break; } return; } #endif