src/mainboard/amd/bimini_fam10/irq_tables.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2010 Advanced Micro Devices, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <console/console.h>
  17 #include <device/pci.h>
  18 #include <string.h>
  19 #include <stdint.h>
  20 #include <arch/pirq_routing.h>
  21 #include <cpu/amd/amdfam10_sysconf.h>
  22
  23 static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
  24                             u8 link0, u16 bitmap0, u8 link1, u16 bitmap1,
  25                             u8 link2, u16 bitmap2, u8 link3, u16 bitmap3,
  26                             u8 slot, u8 rfu)
  27 {
  28         pirq_info->bus = bus;
  29         pirq_info->devfn = devfn;
  30         pirq_info->irq[0].link = link0;
  31         pirq_info->irq[0].bitmap = bitmap0;
  32         pirq_info->irq[1].link = link1;
  33         pirq_info->irq[1].bitmap = bitmap1;
  34         pirq_info->irq[2].link = link2;
  35         pirq_info->irq[2].bitmap = bitmap2;
  36         pirq_info->irq[3].link = link3;
  37         pirq_info->irq[3].bitmap = bitmap3;
  38         pirq_info->slot = slot;
  39         pirq_info->rfu = rfu;
  40 }
  41
  42 extern u8 bus_isa;
  43 extern u8 bus_rs780[8];
  44 extern u8 bus_sb800[6];
  45 extern unsigned long sbdn_sb800;
  46
  47 unsigned long write_pirq_routing_table(unsigned long addr)
  48 {
  49         struct irq_routing_table *pirq;
  50         struct irq_info *pirq_info;
  51         u32 slot_num;
  52         u8 *v;
  53
  54         u8 sum = 0;
  55         int i;
  56
  57         get_bus_conf();         /* it will find out all bus num and apic that share with mptable.c and mptable.c and acpi_tables.c */
  58
  59         /* Align the table to be 16 byte aligned. */
  60         addr += 15;
  61         addr &= ~15;
  62
  63         /* This table must be between 0xf0000 & 0x100000 */
  64         printk(BIOS_INFO, "Writing IRQ routing tables to 0x%lx...", addr);
  65
  66         pirq = (void *)(addr);
  67         v = (u8 *) (addr);
  68
  69         pirq->signature = PIRQ_SIGNATURE;
  70         pirq->version = PIRQ_VERSION;
  71
  72         pirq->rtr_bus = bus_sb800[0];
  73         pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
  74
  75         pirq->exclusive_irqs = 0;
  76
  77         pirq->rtr_vendor = 0x1002;
  78         pirq->rtr_device = 0x4384;
  79
  80         pirq->miniport_data = 0;
  81
  82         memset(pirq->rfu, 0, sizeof(pirq->rfu));
  83
  84         pirq_info = (void *)(&pirq->checksum + 1);
  85         slot_num = 0;
  86
  87         /* pci bridge */
  88         write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
  89                         0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
  90                         0);
  91         pirq_info++;
  92         slot_num++;
  93
  94         pirq->size = 32 + 16 * slot_num;
  95
  96         for (i = 0; i < pirq->size; i++)
  97                 sum += v[i];
  98
  99         sum = pirq->checksum - sum;
 100         if (sum != pirq->checksum) {
 101                 pirq->checksum = sum;
 102         }
 103
 104         printk(BIOS_INFO, "write_pirq_routing_table done.\n");
 105
 106         return (unsigned long)pirq_info;
 107 }