ISA utility to dump address/register type adderss spaces.

Usage: isadump <ADDR-REG> <DATA-REG>
For the default LM78, this would be `isadump 0x295 0x296' (addresses may be
specified as decimal, octal or hexadecimal).


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@144 7894878c-1315-0410-8ee3-d5d059ff63e0

Makefile

@@ -102,7 +102,7 @@ LIBINCLUDEDIR := $(INCLUDEDIR)/sensors
 # to do this. 
 
 # The subdirectories we need to build things in 
-SRCDIRS := src lib prog/sensors etc
+SRCDIRS := src lib prog/sensors prog/dump etc
 ifeq ($(I2C),1)
 SRCDIRS += i2c i2c/detect i2c/drivers i2c/eeprom
 endif

prog/dump/Module.mk

@@ -0,0 +1,38 @@
+#  Module.mk - Makefile for a Linux module for reading sensor data.
+#  Copyright (c) 1998  Frodo Looijaard <frodol@dds.nl>
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program 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 General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Note that MODULE_DIR (the directory in which this file resides) is a
+# 'simply expanded variable'. That means that its value is substituted
+# verbatim in the rules, until it is redefined. 
+MODULE_DIR := prog/dump
+
+# Regrettably, even 'simply expanded variables' will not put their currently
+# defined value verbatim into the command-list of rules...
+PROGDUMPTARGETS := $(MODULE_DIR)/isadump
+PROGDUMPSOURCES := $(MODULE_DIR)/isadump.c 
+
+# Include all dependency files. We use '.rd' to indicate this will create
+# executables.
+INCLUDEFILES += $(PROGDUMPSOURCES:.c=.rd)
+
+all-prog-dump: $(PROGDUMPTARGETS)
+all :: all-prog-dump
+
+clean-prog-dump:
+	$(RM) $(PROGDUMPSOURCES:.c=.rd) $(PROGDUMPSOURCES:.c=.ro) \
+	      $(PROGDUMPTARGETS)
+clean :: clean-prog-dump

prog/dump/isadump.c

@@ -0,0 +1,118 @@
+/*
+    isadump.c - Part of isadump, a user-space program to dump ISA registers
+    Copyright (c) 1999  Frodo Looijaard <frodol@dds.nl>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <asm/io.h>
+
+char hexchar(int i)
+{
+  if ((i >= 0) && (i <= 9))
+    return '0' + i;
+  else if (i <= 15)
+    return 'a' - 10 + i;
+  else
+    return 'X';
+}
+
+void help(void)
+{
+  fprintf(stderr,"Syntax: isadump ADDRREG DATAREG\n");
+}
+
+int main(int argc, char *argv[])
+{
+  int addrreg, datareg;
+  char *end;
+  int i,j,res;
+
+  if (argc < 2) {
+    fprintf(stderr,"Error: No address register specified!\n");
+    help();
+    exit(1);
+  }
+
+  addrreg = strtol(argv[1],&end,0);
+  if (*end) {
+    fprintf(stderr,"Error: First argument not a number!\n");
+    help();
+    exit(1);
+  }
+  if ((addrreg < 0) || (addrreg > 0xfff)) {
+    fprintf(stderr,"Error: Address register out of range!\n");
+    help();
+  }
+
+  if (argc < 3) {
+    fprintf(stderr,"Error: No data register specified!\n");
+    help();
+    exit(1);
+  }
+  datareg = strtol(argv[2],&end,0);
+  if (*end) {
+    fprintf(stderr,"Error: Second argument not a number!\n");
+    help();
+    exit(1);
+  }
+  if ((datareg < 0) || (datareg > 0xfff)) {
+    fprintf(stderr,"Error: Data register out of range!\n");
+    help();
+  }
+
+  if (getuid()) {
+    fprintf(stderr,"Error: Can only be run as root (or make it suid root)\n");
+    exit(1);
+  }
+
+  fprintf(stderr,"  WARNING! Running this program can cause system crashes, "
+          "data loss and worse!\n");
+  fprintf(stderr,"  I will probe address register 0x%04x and "
+                 "data register 0x%04x.\n",addrreg,datareg);
+  fprintf(stderr,"  You have five seconds to reconsider and press CTRL-C!\n\n");
+  sleep(5);
+
+  if ((datareg < 0x400) && (datareg < 0x400)) {
+    if(ioperm(datareg,1,1)) {
+      fprintf(stderr,"Error: Could not ioperm() data register!\n");
+      exit(1);
+    }
+    if(ioperm(addrreg,1,1)) {
+      fprintf(stderr,"Error: Could not ioperm() address register!\n");
+      exit(1);
+    }
+  } else {
+    if(iopl(3)) {
+      fprintf(stderr,"Error: Could not do iopl(3)!\n");
+      exit(1);
+    }
+  }
+
+  printf("     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f\n");
+  for (i = 0; i < 256; i+=16) {
+    printf("%c0: ",hexchar(i/16));
+    for(j = 0; j < 16; j++) {
+      outb(i+j,addrreg);
+      res = inb(datareg);
+      printf("%c%c ",hexchar(res/16),hexchar(res%16));
+    }
+    printf("\n");
+  }
+  exit(0);
+}