/* quark_irq.c - quark_irq_routing */

#include 

/*------------------------------------------------------------------------
 *  quark_irq_routing  -  Set IRQ indirection for devices
 *------------------------------------------------------------------------
 */
int32   quark_irq_routing(void)
{
        int     pciinfo;                /* PCI info for Legacy bridge   */
        uint32  rcba;                   /* Root Complex Base Address    */

        pciinfo = find_pci_device(INTEL_QUARK_LEGBR_PCI_DID,
                                        INTEL_QUARK_LEGBR_PCI_VID, 0);
        if(pciinfo == SYSERR) {
                return SYSERR;
        }

        /* Route PIRQ A-D to 8259 IRQ 3-6 respectively */

        pci_write_config_dword(pciinfo, PABCDRC_OFFSET, PABCDRC_VALUE);

        /* Route PIRQ E-H to 8259 IRQ 9-12 respectively */

        pci_write_config_dword(pciinfo, PEFGHRC_OFFSET, PEFGHRC_VALUE);

        /* Read the Root Complex Base Address */

        pci_read_config_dword(pciinfo, RCBA_OFFSET, &rcba);
        rcba &= RCBA_MASK;

        /* Route PCI interrupts to PIRQA-H, refer to quark_irq.h file
         *   for specific IRQ assignments
         */
        *(uint16 *)(rcba + IRQAGENT0_OFFSET) = IRQAGENT0_VALUE;
        *(uint16 *)(rcba + IRQAGENT1_OFFSET) = IRQAGENT1_VALUE;
        *(uint16 *)(rcba + IRQAGENT2_OFFSET) = IRQAGENT2_VALUE;
        *(uint16 *)(rcba + IRQAGENT3_OFFSET) = IRQAGENT3_VALUE;

        outb(0x4d1, 0x1E);
        return OK;
}