v2 epia-m progress [PMX:#]

[ron minnich]

interrupts are set up in the mainboard (since that determines everything).

Following earlier work i erroneously put this in 
src/southbridge/vt8231/vt8231.c, which is wrong. I have to move this code 
to src/mainboard/via/epia/mainboard.c

here's the code

/* PIRQ init
 */
void pci_assign_irqs(unsigned bus, unsigned slot, const unsigned char 
pIntAtoD[4]);


static const unsigned char southbridgeIrqs[4] = { 11, 5, 10, 12 };
static const unsigned char enetIrqs[4] = { 11, 5, 10, 12 };
static const unsigned char slotIrqs[4] = { 5, 10, 12, 11 };

/*
        Our IDSEL mappings are as follows
        PCI slot is AD31          (device 15) (00:14.0)
        Southbridge is AD28       (device 12) (00:11.0)
*/
static void pci_routing_fixup(void)
{
        device_t dev;

        dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, 
0);
        printk_info("%s: dev is %p\n", __FUNCTION__, dev);
        if (dev) {
                /* initialize PCI interupts - these assignments depend
                   on the PCB routing of PINTA-D 

                   PINTA = IRQ11
                   PINTB = IRQ5
                   PINTC = IRQ10
                   PINTD = IRQ12
                */
                pci_write_config8(dev, 0x55, 0xb0);
                pci_write_config8(dev, 0x56, 0xa5);
                pci_write_config8(dev, 0x57, 0xc0);
        }

        // Standard southbridge components
        printk_info("setting southbridge\n");
        pci_assign_irqs(0, 0x11, southbridgeIrqs);

        // Ethernet built into southbridge
        printk_info("setting ethernet\n");
        pci_assign_irqs(0, 0x12, enetIrqs);

        // PCI slot
        printk_info("setting pci slot\n");
        pci_assign_irqs(0, 0x14, slotIrqs);
        printk_info("%s: DONE\n", __FUNCTION__);
}