src/mainboard/broadcom/blast/irq_tables.c

#include <console/console.h>
#include <device/pci.h>
#include <string.h>
#include <stdint.h>
#include <arch/pirq_routing.h>

#include <cpu/amd/amdk8_sysconf.h>

static void write_pirq_info(struct irq_info *pirq_info, uint8_t bus, uint8_t devfn, uint8_t link0, uint16_t bitmap0,
                uint8_t link1, uint16_t bitmap1, uint8_t link2, uint16_t bitmap2,uint8_t link3, uint16_t bitmap3,
                uint8_t slot, uint8_t rfu)
{
        pirq_info->bus = bus;
        pirq_info->devfn = devfn;

	pirq_info->irq[0].link = link0;
	pirq_info->irq[0].bitmap = bitmap0;
	pirq_info->irq[1].link = link1;
	pirq_info->irq[1].bitmap = bitmap1;
	pirq_info->irq[2].link = link2;
	pirq_info->irq[2].bitmap = bitmap2;
	pirq_info->irq[3].link = link3;
	pirq_info->irq[3].bitmap = bitmap3;

	pirq_info->slot = slot;
	pirq_info->rfu = rfu;
}

extern  unsigned char bus_bcm5780[7];
extern  unsigned char bus_bcm5785_0;
extern  unsigned char bus_bcm5785_1;
extern  unsigned apicid_bcm5785[3];

extern  unsigned sbdn2;



unsigned long write_pirq_routing_table(unsigned long addr)
{

	struct irq_routing_table *pirq;
	struct irq_info *pirq_info;
	unsigned slot_num;
	uint8_t *v;

        uint8_t sum=0;
        int i;

	get_bus_conf();

        /* Align the table to be 16 byte aligned. */
        addr += 15;
        addr &= ~15;

        /* This table must be between 0xf0000 & 0x100000 */
        printk(BIOS_INFO, "Writing IRQ routing tables to 0x%lx...", addr);

	pirq = (void *)(addr);
	v = (uint8_t *)(addr);

	pirq->signature = PIRQ_SIGNATURE;
	pirq->version  = PIRQ_VERSION;

	pirq->rtr_bus = bus_bcm5785_0;
	pirq->rtr_devfn = (sysconf.sbdn<<3)|0;

	pirq->exclusive_irqs = 0;

	pirq->rtr_vendor = 0x1166;
	pirq->rtr_device = 0x0036;

	pirq->miniport_data = 0;

	memset(pirq->rfu, 0, sizeof(pirq->rfu));

	get_bus_conf(); // it will find out all bus num and apic that share with mptable.c and mptable.c and acpi_tables.c

	pirq_info = (void *) ( &pirq->checksum + 1);
	slot_num = 0;
//pci bridge
	write_pirq_info(pirq_info, bus_bcm5785_0, (sysconf.sbdn<<3)|0, 0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0, 0);
	pirq_info++; slot_num++;

	pirq->size = 32 + 16 * slot_num;

        for (i = 0; i < pirq->size; i++)
                sum += v[i];

	sum = pirq->checksum - sum;

        if (sum != pirq->checksum) {
                pirq->checksum = sum;
        }

	printk(BIOS_INFO, "done.\n");

	return	(unsigned long) pirq_info;

}