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#include <stdio.h>
#include <sys/io.h>
/* well, they really thought this throught, eh? Family is 8 bits!!!! */
char *familyid[] = {
[0xf1] = "pc8374 (winbond, was NS)"
};
/* eventually, if you care, break this out into a file. For now, I don't know
* if we need this.
*/
unsigned char regval(unsigned short port, unsigned short reg) {
outb(reg, port);
return inb(port+1);
}
void
dump_ns8374(unsigned short port) {
printf("Enables: 21=%02x, 22=%02x, 23=%02x, 24=%02x, 26=%02x\n",
regval(port,0x21), regval(port,0x22),
regval(port,0x23), regval(port,0x24), regval(port,0x26));
/* check COM1. This is all we care about at present. */
printf("COM 1 is Globally %s\n", regval(port,0x26)&8 ? "disabled" : "enabled");
/* select com1 */
outb(0x7, port);
outb(3, port+1);
printf("COM 1 is locally %s\n", regval(port, 0x30) & 1 ? "enabled" : "disabled");
printf("COM1 60=%02x, 61=%02x, 70=%02x, 71=%02x, 74=%02x, 75=%02x, f0=%02x\n",
regval(port, 0x60), regval(port, 0x61), regval(port, 0x70), regval(port, 0x71),
regval(port, 0x74), regval(port, 0x75), regval(port, 0xf0));
}
void
probe_idregs(unsigned short port){
unsigned char id;
int i;
outb(0x20, port);
if (inb(port) != 0x20) {
printf("probing 0x%04x, failed (0x%02x), data returns 0x%02x\n",
port, inb(port), inb(port+1));
return;
}
id = inb(port+1);
printf("Probe of id returns %02x\n", id);
if (id == 0xff)
return;
printf("%s\n", familyid[id]);
switch(id) {
case 0xf1:
dump_ns8374(port);
break;
default:
printf("no dump for 0x%02x\n", id);
break;
}
}
void
probe_superio(unsigned short port) {
probe_idregs(port);
}
int
main(int argc, char *argv[]){
unsigned short port;
if (iopl(3) < 0) {
perror("iopl");
exit(1);
}
/* try the 2e */
probe_superio(0x2e);
/* now try the 4e */
probe_superio(0x4e);
}
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