about summary refs log tree commit diff
path: root/sysdeps/unix/sysv/linux/arm/ioperm.c
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>2005-05-24 06:18:37 +0000
committerRoland McGrath <roland@gnu.org>2005-05-24 06:18:37 +0000
commitce9b3bc17a7abc5b729b9e2cc72eb207a3617328 (patch)
tree7ccac7afcfaae36311c75b36001588534184718f /sysdeps/unix/sysv/linux/arm/ioperm.c
parent88b8441a81c7bc9414a97a0a123c09b6c724f80a (diff)
downloadglibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.tar.gz
glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.tar.xz
glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.zip
Move arm port to ports repository cvs/fedora-glibc-20050524T1606
2005-05-23  Roland McGrath  <roland@redhat.com>

	* sysdeps/arm, sysdeps/unix/arm, sysdeps/unix/sysv/linux/arm:
	Subdirectories moved to ports repository.
	* configure.in (base_machine): Remove arm* and thumb* patterns.
	* shlib-versions (arm.*-.*-linux.*): Remove this pattern.
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/ioperm.c')
-rw-r--r--sysdeps/unix/sysv/linux/arm/ioperm.c274
1 files changed, 0 insertions, 274 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/ioperm.c b/sysdeps/unix/sysv/linux/arm/ioperm.c
deleted file mode 100644
index 558b485b61..0000000000
--- a/sysdeps/unix/sysv/linux/arm/ioperm.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/* Copyright (C) 1998, 1999, 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Phil Blundell, based on the Alpha version by
-   David Mosberger.
-
-   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, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-/* I/O port access on the ARM is something of a fiction.  What we do is to
-   map an appropriate area of /dev/mem into user space so that a program
-   can blast away at the hardware in such a way as to generate I/O cycles
-   on the bus.  To insulate user code from dependencies on particular
-   hardware we don't allow calls to inb() and friends to be inlined, but
-   force them to come through code in here every time.  Performance-critical
-   registers tend to be memory mapped these days so this should be no big
-   problem.  */
-
-/* Once upon a time this file used mprotect to enable and disable
-   access to particular areas of I/O space.  Unfortunately the
-   mprotect syscall also has the side effect of enabling caching for
-   the area affected (this is a kernel limitation).  So we now just
-   enable all the ports all of the time.  */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/types.h>
-#include <sys/mman.h>
-
-#include <asm/page.h>
-#include <sys/sysctl.h>
-
-#define PATH_ARM_SYSTYPE	"/etc/arm_systype"
-#define PATH_CPUINFO		"/proc/cpuinfo"
-
-#define MAX_PORT	0x10000
-
-static struct {
-  unsigned long int	base;
-  unsigned long int	io_base;
-  unsigned int		shift;
-  unsigned int		initdone;	/* since all the above could be 0 */
-} io;
-
-#define IO_BASE_FOOTBRIDGE	0x7c000000
-#define IO_SHIFT_FOOTBRIDGE	0
-
-static struct platform {
-  const char		*name;
-  unsigned long int	io_base;
-  unsigned int		shift;
-} platform[] = {
-  /* All currently supported platforms are in fact the same. :-)  */
-  {"Chalice-CATS",	IO_BASE_FOOTBRIDGE,	IO_SHIFT_FOOTBRIDGE},
-  {"DEC-EBSA285",	IO_BASE_FOOTBRIDGE,	IO_SHIFT_FOOTBRIDGE},
-  {"Corel-NetWinder",	IO_BASE_FOOTBRIDGE,	IO_SHIFT_FOOTBRIDGE},
-  {"Rebel-NetWinder",	IO_BASE_FOOTBRIDGE,	IO_SHIFT_FOOTBRIDGE},
-};
-
-#define IO_ADDR(port)	(io.base + ((port) << io.shift))
-
-/*
- * Initialize I/O system.  There are several ways to get the information
- * we need.  Each is tried in turn until one succeeds.
- *
- * 1. Sysctl (CTL_BUS, BUS_ISA, ISA_*).  This is the preferred method
- *    but not all kernels support it.
- *
- * 2. Read the value (not the contents) of symlink PATH_ARM_SYSTYPE.
- *    - If it matches one of the entries in the table above, use the
- *      corresponding values.
- *    - If it begins with a number, assume this is a previously
- *      unsupported system and the values encode, in order,
- *      "<io_base>,<port_shift>".
- *
- * 3. Lookup the "system type" field in /proc/cpuinfo.  Again, if it
- *    matches an entry in the platform[] table, use the corresponding
- *    values.
- */
-
-static int
-init_iosys (void)
-{
-  char systype[256];
-  int i, n;
-  static int iobase_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_BASE };
-  static int ioshift_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_SHIFT };
-  size_t len = sizeof(io.base);
-
-  if (! sysctl (iobase_name, 3, &io.io_base, &len, NULL, 0)
-      && ! sysctl (ioshift_name, 3, &io.shift, &len, NULL, 0))
-    {
-      io.initdone = 1;
-      return 0;
-    }
-
-  n = readlink (PATH_ARM_SYSTYPE, systype, sizeof (systype) - 1);
-  if (n > 0)
-    {
-      systype[n] = '\0';
-      if (isdigit (systype[0]))
-	{
-	  if (sscanf (systype, "%li,%i", &io.io_base, &io.shift) == 2)
-	    {
-	      io.initdone = 1;
-	      return 0;
-	    }
-	  /* else we're likely going to fail with the system match below */
-	}
-    }
-  else
-    {
-      FILE * fp;
-
-      fp = fopen (PATH_CPUINFO, "r");
-      if (! fp)
-	return -1;
-      while ((n = fscanf (fp, "Hardware\t: %256[^\n]\n", systype))
-	     != EOF)
-	{
-	  if (n == 1)
-	    break;
-	  else
-	    fgets (systype, 256, fp);
-	}
-      fclose (fp);
-
-      if (n == EOF)
-	{
-	  /* this can happen if the format of /proc/cpuinfo changes...  */
-	  fprintf (stderr,
-		   "ioperm: Unable to determine system type.\n"
-		   "\t(May need " PATH_ARM_SYSTYPE " symlink?)\n");
-	  __set_errno (ENODEV);
-	  return -1;
-	}
-    }
-
-  /* translate systype name into i/o system: */
-  for (i = 0; i < sizeof (platform) / sizeof (platform[0]); ++i)
-    {
-      if (strcmp (platform[i].name, systype) == 0)
-	{
-	  io.shift = platform[i].shift;
-	  io.io_base = platform[i].io_base;
-	  io.initdone = 1;
-	  return 0;
-	}
-    }
-
-  /* systype is not a known platform name... */
-  __set_errno (ENODEV);
-  return -1;
-}
-
-int
-_ioperm (unsigned long int from, unsigned long int num, int turn_on)
-{
-  if (! io.initdone && init_iosys () < 0)
-    return -1;
-
-  /* this test isn't as silly as it may look like; consider overflows! */
-  if (from >= MAX_PORT || from + num > MAX_PORT)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-
-  if (turn_on)
-    {
-      if (! io.base)
-	{
-	  int fd;
-
-	  fd = open ("/dev/mem", O_RDWR);
-	  if (fd < 0)
-	    return -1;
-
-	  io.base =
-	    (unsigned long int) __mmap (0, MAX_PORT << io.shift,
-					PROT_READ | PROT_WRITE,
-					MAP_SHARED, fd, io.io_base);
-	  close (fd);
-	  if ((long) io.base == -1)
-	    return -1;
-	}
-    }
-
-  return 0;
-}
-
-
-int
-_iopl (unsigned int level)
-{
-    if (level > 3)
-      {
-	__set_errno (EINVAL);
-	return -1;
-      }
-    if (level)
-      {
-	return _ioperm (0, MAX_PORT, 1);
-      }
-    return 0;
-}
-
-
-void
-_outb (unsigned char b, unsigned long int port)
-{
-  *((volatile unsigned char *)(IO_ADDR (port))) = b;
-}
-
-
-void
-_outw (unsigned short b, unsigned long int port)
-{
-  *((volatile unsigned short *)(IO_ADDR (port))) = b;
-}
-
-
-void
-_outl (unsigned int b, unsigned long int port)
-{
-  *((volatile unsigned long *)(IO_ADDR (port))) = b;
-}
-
-
-unsigned int
-_inb (unsigned long int port)
-{
-  return *((volatile unsigned char *)(IO_ADDR (port)));
-}
-
-
-unsigned int
-_inw (unsigned long int port)
-{
-  return *((volatile unsigned short *)(IO_ADDR (port)));
-}
-
-
-unsigned int
-_inl (unsigned long int port)
-{
-  return *((volatile unsigned long *)(IO_ADDR (port)));
-}
-
-weak_alias (_ioperm, ioperm);
-weak_alias (_iopl, iopl);
-weak_alias (_inb, inb);
-weak_alias (_inw, inw);
-weak_alias (_inl, inl);
-weak_alias (_outb, outb);
-weak_alias (_outw, outw);
-weak_alias (_outl, outl);