src/mainboard/gigabyte/ga_2761gxdk/irq_tables.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2007 AMD
 * Written by Yinghai Lu <yinghailu@amd.com> for AMD.
 * Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS)
 * Written by Morgan Tsai <my_tsai@sis.com> for SiS.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <console/console.h>
#include <device/pci.h>
#include <string.h>
#include <stdint.h>
#include <arch/pirq_routing.h>
#include <device/pci_ids.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_sis966[8]; //1

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;
	unsigned sbdn;

        uint8_t sum=0;
        int i;

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

        /* 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 = 0;
	pirq->rtr_devfn = PCI_DEVFN(2, 0);

	pirq->exclusive_irqs = 0;

	pirq->rtr_vendor = PCI_VENDOR_ID_SIS;
	pirq->rtr_device = PCI_DEVICE_ID_SIS_SIS966_LPC;

	pirq->miniport_data = 0;

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

	pirq_info = (void *) ( &pirq->checksum + 1);
	slot_num = 0;

	write_pirq_info(pirq_info, 0, PCI_DEVFN(2, 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");

        {
                device_t dev;
                dev = dev_find_slot(0, PCI_DEVFN(2,0));
		if (dev) {
                        /* initialize PCI interupts - these assignments depend
                        on the PCB routing of PINTA-D

                        PINTA = IRQ10
                        PINTB = IRQ11
			PINTC = NA
			PINTD = IRQ10
                        PINTE = IRQ11
                        PINTF = IRQ5
			PINTG = NA
			PINTH = IRQ7

                        */
                uint8_t	reg[8]={0x41,0x42,0x43,0x44,0x60,0x61,0x62,0x63};
		uint8_t irq[8]={0x0A,0X0B,0X0,0X0a,0X0B,0X05,0X0,0X07};

                for(i=0;i<8;i++)
                    pci_write_config8(dev, reg[i], irq[i]);
		} // endif

                printk(BIOS_DEBUG, "Setting Onboard SiS Southbridge\n");

                dev = dev_find_slot(0, PCI_DEVFN(2,5));   // 5513 (IDE)
                pci_write_config8(dev, 0x3C, 0x0A);
                dev = dev_find_slot(0, PCI_DEVFN(3,0));   // USB 1.1
                pci_write_config8(dev, 0x3C, 0x0B);
                dev = dev_find_slot(0, PCI_DEVFN(3,1));   // USB 1.1
                pci_write_config8(dev, 0x3C, 0x05);
                dev = dev_find_slot(0, PCI_DEVFN(3,3));   // USB 2.0
		pci_write_config8(dev, 0x3C, 0x07);
                dev = dev_find_slot(0, PCI_DEVFN(4,0));   // 191 (LAN)
		pci_write_config8(dev, 0x3C, 0x0A);
                dev = dev_find_slot(0, PCI_DEVFN(5,0));   // 1183 (SATA)
                pci_write_config8(dev, 0x3C, 0x0B);
                dev = dev_find_slot(0, PCI_DEVFN(6,0));   // PCI-E
                pci_write_config8(dev, 0x3C, 0x0A);
                dev = dev_find_slot(0, PCI_DEVFN(7,0));   // PCI-E
                pci_write_config8(dev, 0x3C, 0x0A);
                dev = dev_find_slot(0, PCI_DEVFN(15,0));  // Azalia
                pci_write_config8(dev, 0x3C, 0x05);
        }

	printk(BIOS_DEBUG, "pirq routing table, size=%d\n", pirq->size);
	for (i = 0; i < pirq->size; i+=4)
		printk(BIOS_DEBUG, "%.2x%.2x%.2x%.2x\n", v[i+3],v[i+2],v[i+1],v[i]);

	return	(unsigned long) pirq_info;

}