Changeset 2452 for lm-sensors/trunk/prog/dump/isadump.c

Timestamp:

04/19/04 20:02:10 (9 years ago)

Author:

khali

Message:

Stop being Winbond-specific about banks: don't mask high bit.

Allow forcing of bank 0. Restore bank after dump.
This allows proper operation on Super-I/O chips.

Files:

• lm-sensors/trunk/prog/dump/isadump.c (modified) (6 diffs)

lm-sensors/trunk/prog/dump/isadump.c

@@ -1 +1 @@
 /*
     isadump.c - isadump, a user-space program to dump ISA registers
-    Copyright (c) 2000  Frodo Looijaard <frodol@dds.nl>, and
+    Copyright (C) 2000  Frodo Looijaard <frodol@dds.nl>, and
                         Mark D. Studebaker <mdsxyz123@yahoo.com>
+    Copyright (C) 2004  The lm_sensors group
 
     This program is free software; you can redistribute it and/or modify
@@ -23 +24 @@
         isadump 0x295 0x296             Basic winbond dump using address/data registers
         isadump 0x295 0x296 2           Winbond dump, bank 2
+        isadump 0x2e 0x2f 0x09 0x07     Super-I/O, logical device 9
         isadump -f 0x5000               Flat address space dump like for Via 686a
 */
@@ -61 +63 @@
 int main(int argc, char *argv[])
 {
-  int addrreg, datareg = 0, bank = 0, bankreg = 0x4E;
+  int addrreg, datareg = 0, bank = -1, bankreg = 0x4E;
+  int oldbank = 0;
   int i,j,res;
   int flat = 0;
@@ -150 +153 @@
         fprintf(stderr,"  I will probe address register 0x%04x and "
                  "data register 0x%04x.\n",addrreg,datareg);
-  if(bank)      
+  if(bank>=0)   
     fprintf(stderr,"  Probing bank %d using bank register 0x%02x.\n",
             bank, bankreg);
@@ -174 +177 @@
 #endif
 
-  /* See Winbond w83781d data sheet for bank details */
-  if(bank) {
+  if(bank>=0) {
     outb(bankreg,addrreg);
-    outb(bank | 0x80,datareg); /* OR in high byte flag */
+    oldbank=inb(datareg);
+    outb(bank,datareg);
   }
 
@@ -194 +197 @@
     printf("\n");
   }
-  if(bank) {
+  if(bank>=0) {
     outb(bankreg,addrreg);
-    outb(0x80,datareg); /* put back in bank 0 high byte */
+    outb(oldbank,datareg); /* restore original value */
   }
   exit(0);