2 * This file is part of the coreboot project.
4 * Copyright (C) 2011 Advanced Micro Devices, Inc.
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.
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.
17 #include <console/console.h>
18 #include <device/pci.h>
21 #include <arch/pirq_routing.h>
22 #include <cpu/amd/amdfam14.h>
25 static void write_pirq_info(struct irq_info
*pirq_info
, u8 bus
, u8 devfn
,
26 u8 link0
, u16 bitmap0
, u8 link1
, u16 bitmap1
,
27 u8 link2
, u16 bitmap2
, u8 link3
, u16 bitmap3
,
31 pirq_info
->devfn
= devfn
;
32 pirq_info
->irq
[0].link
= link0
;
33 pirq_info
->irq
[0].bitmap
= bitmap0
;
34 pirq_info
->irq
[1].link
= link1
;
35 pirq_info
->irq
[1].bitmap
= bitmap1
;
36 pirq_info
->irq
[2].link
= link2
;
37 pirq_info
->irq
[2].bitmap
= bitmap2
;
38 pirq_info
->irq
[3].link
= link3
;
39 pirq_info
->irq
[3].bitmap
= bitmap3
;
40 pirq_info
->slot
= slot
;
44 unsigned long write_pirq_routing_table(unsigned long addr
)
47 struct irq_routing_table
*pirq
;
48 struct irq_info
*pirq_info
;
55 /* Align the table to be 16 byte aligned. */
59 /* This table must be between 0xf0000 & 0x100000 */
60 printk(BIOS_INFO
, "Writing IRQ routing tables to 0x%lx...", addr
);
62 pirq
= (void *)(addr
);
65 pirq
->signature
= PIRQ_SIGNATURE
;
66 pirq
->version
= PIRQ_VERSION
;
69 pirq
->rtr_devfn
= PCI_DEVFN(0x14, 4);
71 pirq
->exclusive_irqs
= 0;
73 pirq
->rtr_vendor
= 0x1002;
74 pirq
->rtr_device
= 0x4384;
76 pirq
->miniport_data
= 0;
78 memset(pirq
->rfu
, 0, sizeof(pirq
->rfu
));
80 pirq_info
= (void *)(&pirq
->checksum
+ 1);
85 write_pirq_info(pirq_info
, 0, PCI_DEVFN(0x14, 4),
86 0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
96 pirq
->size
= 32 + 16 * slot_num
;
98 for (i
= 0; i
< pirq
->size
; i
++)
101 sum
= pirq
->checksum
- sum
;
103 if (sum
!= pirq
->checksum
) {
104 pirq
->checksum
= sum
;
107 printk(BIOS_INFO
, "write_pirq_routing_table done.\n");
109 return (unsigned long)pirq_info
;