[netwatch.git] / tools / pci.c

/* pci.c
 * Arbitrary PCI space reader/writer utility
 * NetWatch system management mode administration console
 *
 * Copyright (c) 2008 Jacob Potter and Joshua Wise.  All rights reserved.
 * This program is free software; you can redistribute and/or modify it under
 * the terms found in the file LICENSE in the root of this source tree.
 *
 */

#include <pci.h>
#include <string.h>

int main(int argc, char **argv)
{
        unsigned int bus, dev, fn, addr;
        unsigned char type = 'b';
        unsigned int datum;
        
        if (iopl(3) < 0)
        {
                perror("iopl");
                return 1;
        }
        
        if ((argc < 5) || (argc > 7))
        {
        usage:
                printf("usage: %s bus dev fn addr [b|w|l [datum]]\n", argv[0]);
                return 2;
        }
        
        bus = strtoul(argv[1], NULL, 0);
        dev = strtoul(argv[2], NULL, 0);
        fn = strtoul(argv[3], NULL, 0);
        addr = strtoul(argv[4], NULL, 0);
        
        if (argc > 5)
                type = *argv[5];
        
        if (argc > 6)
        {
                datum = strtoul(argv[6], NULL, 0);
                switch (type)
                {
                case 'b':
                        datum &= 0xFF;
                        pci_write8(bus, dev, fn, addr, datum);
                        printf("Wrote byte 0x%02x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
                        break;
                case 'w':
                        datum &= 0xFFFF;
                        pci_write16(bus, dev, fn, addr, datum);
                        printf("Wrote word 0x%04x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
                        break;
                case 'l':
                        pci_write32(bus, dev, fn, addr, datum);
                        printf("Wrote long 0x%08x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
                        break;
                default:
                        goto usage;
                }
        } else {
                switch(type)
                {
                case 'b':
                        datum = pci_read8(bus, dev, fn, addr);
                        printf("Read byte 0x%02x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
                        break;
                case 'w':
                        datum = pci_read16(bus, dev, fn, addr);
                        printf("Read word 0x%04x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
                        break;
                case 'l':
                        datum = pci_read32(bus, dev, fn, addr);
                        printf("Read long 0x%08x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
                        break;
                default:
                        goto usage;
                }
        }
}