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