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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007 AMD
* Written by Yinghai Lu <yinghailu@amd.com> for AMD.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#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_mcp55[8]; // 1
unsigned long write_pirq_routing_table(unsigned long addr)
{
struct irq_routing_table *pirq;
struct irq_info *pirq_info;
unsigned int slot_num, sbdn;
uint8_t *v;
uint8_t sum = 0;
int i;
/* Will find out all bus num and apic that share with mptable.c
* and mptable.c and acpi_tables.c.
*/
get_bus_conf();
sbdn = sysconf.sbdn;
/* Align the table to be 16 byte aligned. */
addr += 15;
addr &= ~15;
/* This table must be between 0xf0000 and 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_mcp55[0];
pirq->rtr_devfn = ((sbdn + 6) << 3) | 0;
pirq->exclusive_irqs = 0;
pirq->rtr_vendor = 0x10de;
pirq->rtr_device = 0x0370; /* TODO: Hm, getpir suggests 0x0364 !? */
pirq->miniport_data = 0;
memset(pirq->rfu, 0, sizeof(pirq->rfu));
pirq_info = (void *)(&pirq->checksum + 1);
slot_num = 0;
/* PCI bridge (00:06.0) */
write_pirq_info(pirq_info, bus_mcp55[0], ((sbdn + 6) << 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;
}
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