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Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/sys/io.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/alpha/sys/io.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/sys/io.h b/sysdeps/unix/sysv/linux/alpha/sys/io.h new file mode 100644 index 0000000000..a3b94fa9ec --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/sys/io.h @@ -0,0 +1,94 @@ +/* Copyright (C) 1996-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + 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. + + 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#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; + +/* 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; + +/* 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)); + +/* 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)); + +/* 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)); + +/* 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)); + +/* 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; + +/* 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; + +__END_DECLS + +#endif /* _SYS_IO_H */ |