| #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); |
| } |