glibc/sysdeps/unix/sysv/linux/alpha/sys/io.h

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/* Copyright (C) 1996-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_IO_H
#define _SYS_IO_H 1
#include <features.h>
__BEGIN_DECLS
/* If TURN_ON is TRUE, request for permission to do direct i/o on the
port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O
permission off for that range. This call requires root privileges.
Portability note: not all Linux platforms support this call. Most
platforms based on the PC I/O architecture probably will, however.
E.g., Linux/Alpha for Alpha PCs supports this. */
extern int ioperm (unsigned long int __from, unsigned long int __num,
int __turn_on) __THROW;
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/* Set the I/O privilege level to LEVEL. If LEVEL>3, permission to
access any I/O port is granted. This call requires root
privileges. */
extern int iopl (int __level) __THROW;
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/* Return the physical address of the DENSE I/O memory or NULL if none
is available (e.g. on a jensen). */
extern unsigned long int _bus_base (void) __THROW __attribute__ ((const));
extern unsigned long int bus_base (void) __THROW __attribute__ ((const));
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/* Return the physical address of the SPARSE I/O memory. */
extern unsigned long _bus_base_sparse (void) __THROW __attribute__ ((const));
extern unsigned long bus_base_sparse (void) __THROW __attribute__ ((const));
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/* Return the HAE shift used by the SPARSE I/O memory. */
extern int _hae_shift (void) __THROW __attribute__ ((const));
extern int hae_shift (void) __THROW __attribute__ ((const));
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/* Previous three are deprecated in favour of the following, which
knows about multiple PCI "hoses". Provide the PCI bus and dfn
numbers just as to pciconfig_read/write. */
enum __pciconfig_iobase_which
{
IOBASE_HOSE = 0, /* Return hose index. */
IOBASE_SPARSE_MEM = 1, /* Return physical memory addresses. */
IOBASE_DENSE_MEM = 2,
IOBASE_SPARSE_IO = 3,
IOBASE_DENSE_IO = 4
};
extern long pciconfig_iobase(enum __pciconfig_iobase_which __which,
unsigned long int __bus,
unsigned long int __dfn)
__THROW __attribute__ ((const));
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/* Access PCI space protected from machine checks. */
extern int pciconfig_read (unsigned long int __bus,
unsigned long int __dfn,
unsigned long int __off,
unsigned long int __len,
unsigned char *__buf) __THROW;
extern int pciconfig_write (unsigned long int __bus,
unsigned long int __dfn,
unsigned long int __off,
unsigned long int __len,
unsigned char *__buf) __THROW;
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/* Userspace declarations. */
extern unsigned int inb (unsigned long __port) __THROW;
extern unsigned int inw (unsigned long __port) __THROW;
extern unsigned int inl (unsigned long __port) __THROW;
extern void outb (unsigned char __b, unsigned long __port) __THROW;
extern void outw (unsigned short __w, unsigned long __port) __THROW;
extern void outl (unsigned int __l, unsigned long __port) __THROW;
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__END_DECLS
#endif /* _SYS_IO_H */