2 * This file is part of the LinuxBIOS project.
4 * Copyright (C) 2007 Nikolay Petukhov <nikolay.petukhov@gmail.com>
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; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <arch/pirq_routing.h>
23 #define IRQ_BITMAP_LINK0 0x0800 /* chipset's INTA# input should be routed to IRQ11 */
24 #define IRQ_BITMAP_LINK1 0x0400 /* chipset's INTB# input should be routed to IRQ10 */
25 #define IRQ_BITMAP_LINK2 0x0000 /* chipset's INTC# input should be routed to nothing (disabled) */
26 #define IRQ_BITMAP_LINK3 0x0000 /* chipset's INTD# input should be routed to nothing (disabled) */
28 const struct irq_routing_table intel_irq_routing_table = {
29 PIRQ_SIGNATURE, /* u32 signature */
30 PIRQ_VERSION, /* u16 version */
31 32+16*2, /* There can be a total of 2 devices on the bus */
32 0x00, /* Where the interrupt router lies (bus) */
33 (0x12<<3)|0x0, /* Where the interrupt router lies (dev) */
34 0xc00, /* IRQs devoted exclusively to PCI usage */
37 0, /* Crap (miniport) */
38 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
39 0x57, /* u8 checksum. This has to be set to some
40 value that would give 0 after the sum of all
41 bytes for this structure (including checksum) */
45 .slot = 0x0, /* should be 0 when it is no real slot. My device is soldered */
47 .devfn = (0x13<<3)|0x0, /* 0x13 is my USB OHCI */
49 [0] = { /* <-- 0 means this is INTA# output from the device or slot */
50 .link = 0x01, /* 0x01 means its connected to INTA# input at chipset */
51 .bitmap = IRQ_BITMAP_LINK0
53 [1] = { /* <-- 1 means this is INTB# output from the device or slot */
54 .link = 0x02, /* 0x02 means its connected to INTB# input at chipset */
55 .bitmap = IRQ_BITMAP_LINK1
57 [2] = { /* <-- 2 means this is INTC# output from the device or slot */
58 .link = 0x03, /* 0x03 means its connected to INTC# input at chipset */
59 .bitmap = IRQ_BITMAP_LINK2
61 [3] = { /* <-- 3 means this is INTD# output from the device or slot */
62 .link = 0x04, /* 0x04 means its connected to INTD# input at chipset */
63 .bitmap = IRQ_BITMAP_LINK3
69 .slot = 0x0, /* means also "on board" */
71 .devfn = (0x0e<<3)|0x0, /* 0x0e is my Realtek Network device */
73 [0] = { /* <-- 0 means this is INTA# output from the device or slot */
74 .link = 0x02, /* 0x02 means its connected to INTB# input at chipset */
75 .bitmap = IRQ_BITMAP_LINK1
77 [1] = { /* <-- 1 means this is INTB# output from the device or slot */
78 .link = 0x03, /* 0x03 means its connected to INTC# input at chipset */
79 .bitmap = IRQ_BITMAP_LINK2
81 [2] = { /* <-- 2 means this is INTC# output from the device or slot */
82 .link = 0x04, /* 0x04 means its connected to INTD# input at chipset */
83 .bitmap = IRQ_BITMAP_LINK3
85 [3] = { /* <-- 3 means this is INTD# output from the device or slot */
86 .link = 0x01, /* 0x01 means its connected to INTA# input at chipset */
87 .bitmap = IRQ_BITMAP_LINK0
95 * Copy the IRQ routing table to memory.
97 * @param addr Destination address (between 0xF0000...0x100000).
98 * @return The end address of the pirq routing table in memory.
100 unsigned long write_pirq_routing_table(unsigned long addr)
102 return copy_pirq_routing_table(addr);