src/mainboard/asus/m5a99x-evo/irq_tables.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2011 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  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  18  */
  19
  20 #include <console/console.h>
  21 #include <device/pci.h>
  22 #include <string.h>
  23 #include <stdint.h>
  24 #include <arch/pirq_routing.h>
  25 #include <cpu/amd/amdfam10_sysconf.h>
  26
  27 static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
  28                             u8 link0, u16 bitmap0, u8 link1, u16 bitmap1,
  29                             u8 link2, u16 bitmap2, u8 link3, u16 bitmap3,
  30                             u8 slot, u8 rfu)
  31 {
  32         pirq_info->bus = bus;
  33         pirq_info->devfn = devfn;
  34         pirq_info->irq[0].link = link0;
  35         pirq_info->irq[0].bitmap = bitmap0;
  36         pirq_info->irq[1].link = link1;
  37         pirq_info->irq[1].bitmap = bitmap1;
  38         pirq_info->irq[2].link = link2;
  39         pirq_info->irq[2].bitmap = bitmap2;
  40         pirq_info->irq[3].link = link3;
  41         pirq_info->irq[3].bitmap = bitmap3;
  42         pirq_info->slot = slot;
  43         pirq_info->rfu = rfu;
  44 }
  45
  46 extern u8 bus_isa;
  47 extern u8 bus_rs780[8];
  48 extern u8 bus_sb800[2];
  49 extern unsigned long sbdn_sb800;
  50
  51 unsigned long write_pirq_routing_table(unsigned long addr)
  52 {
  53         struct irq_routing_table *pirq;
  54         struct irq_info *pirq_info;
  55         u32 slot_num;
  56         u8 *v;
  57
  58         u8 sum = 0;
  59         int i;
  60
  61         get_bus_conf();         /* it will find out all bus num and apic that share with mptable.c and mptable.c and acpi_tables.c */
  62
  63         /* Align the table to be 16 byte aligned. */
  64         addr += 15;
  65         addr &= ~15;
  66
  67         /* This table must be betweeen 0xf0000 & 0x100000 */
  68         printk(BIOS_INFO, "Writing IRQ routing tables to 0x%lx...", addr);
  69
  70         pirq = (void *)(addr);
  71         v = (u8 *) (addr);
  72
  73         pirq->signature = PIRQ_SIGNATURE;
  74         pirq->version = PIRQ_VERSION;
  75
  76         pirq->rtr_bus = bus_sb800[0];
  77         pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
  78
  79         pirq->exclusive_irqs = 0;
  80
  81         pirq->rtr_vendor = 0x1002;
  82         pirq->rtr_device = 0x4384;
  83
  84         pirq->miniport_data = 0;
  85
  86         memset(pirq->rfu, 0, sizeof(pirq->rfu));
  87
  88         pirq_info = (void *)(&pirq->checksum + 1);
  89         slot_num = 0;
  90
  91         /* pci bridge */
  92         write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
  93                         0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
  94                         0);
  95         pirq_info++;
  96         slot_num++;
  97
  98         pirq->size = 32 + 16 * slot_num;
  99
 100         for (i = 0; i < pirq->size; i++)
 101                 sum += v[i];
 102
 103         sum = pirq->checksum - sum;
 104         if (sum != pirq->checksum) {
 105                 pirq->checksum = sum;
 106         }
 107
 108         printk(BIOS_INFO, "write_pirq_routing_table done.\n");
 109
 110         return (unsigned long)pirq_info;
 111 }