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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 Tobias Diedrich <ranma+coreboot@tdiedrich.de>
*
* 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; version 2 of the License.
*
* 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.
*
* IRQ Routing Table
*
* Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM
*/
#include <string.h>
#include <stdint.h>
#include <arch/pirq_routing.h>
#include <device/pci_ids.h>
/* Free irqs are 3, 5, 10 and 11 */
#define IRQBM ((1 << 3)|(1 << 5)|(1 << 10)|(1 << 11))
#define LNKA 1
#define LNKB 2
#define LNKC 3
#define LNKD 4
/*
* For simplicity map LNK[E-H] to LNK[A-D].
* This also means we are 82C596 compatible.
* Needs 0:11.0 0x46[4] set to 0.
*/
#define LNKE 1
#define LNKF 2
#define LNKG 3
#define LNKH 4
static const struct irq_routing_table intel_irq_routing_table = {
PIRQ_SIGNATURE, /* u32 signature */
PIRQ_VERSION, /* u16 version */
32+16*CONFIG_IRQ_SLOT_COUNT, /* there can be total CONFIG_IRQ_SLOT_COUNT devices on the bus */
0, /* Where the interrupt router lies (bus) */
(0x11 << 3)|0, /* Where the interrupt router lies (dev) */
0, /* IRQs devoted exclusively to PCI usage */
PCI_VENDOR_ID_VIA, /* Compatible Vendor (VIA) */
PCI_DEVICE_ID_VIA_82C596, /* Compatible Device (82C596) */
0, /* Miniport data */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
0x5f, /* u8 checksum, this has to be set to some value that would give 0 after the sum of all bytes for this structure (including checksum) */
{
/* bus, dev | fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */
/* peg bridge */
{0x00, (0x02 << 3) | 0x0, {{LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}}, 0x0, 0x0},
/* pcie bridge */
{0x00, (0x03 << 3) | 0x0, {{LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}}, 0x0, 0x0},
/* sata/ide */
{0x00, (0x0f << 3) | 0x0, {{0x00, 0x0000}, {LNKB, IRQBM}, {0x00, 0x0000}, {0x00, 0x0000}}, 0x0, 0x0},
/* usb */
{0x00, (0x10 << 3) | 0x0, {{LNKA, IRQBM}, {LNKB, IRQBM}, {LNKC, IRQBM}, {LNKD, IRQBM}}, 0x0, 0x0},
/* agp bus? */
{0x01, (0x00 << 3) | 0x0, {{LNKA, IRQBM}, {LNKB, IRQBM}, {LNKC, IRQBM}, {LNKD, IRQBM}}, 0x0, 0x0},
/* pcie graphics */
{0x02, (0x00 << 3) | 0x0, {{LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}}, 0x6, 0x0},
/* onboard pcie atl1 ethernet */
{0x03, (0x00 << 3) | 0x0, {{LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}}, 0x0, 0x0},
/* pcie slot */
{0x04, (0x00 << 3) | 0x0, {{LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}}, 0x5, 0x0},
/* onboard marvell mv6121 sata */
{0x05, (0x00 << 3) | 0x0, {{LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}, {LNKH, IRQBM}}, 0x0, 0x0},
/* Azalia HDAC */
{0x06, (0x01 << 3) | 0x0, {{LNKB, IRQBM}, {0x00, 0x0000}, {0x00, 0x0000}, {0x00, 0x0000}}, 0x0, 0x0},
/* PCI slots */
{0x07, (0x06 << 3) | 0x0, {{LNKA, IRQBM}, {LNKB, IRQBM}, {LNKC, IRQBM}, {LNKD, IRQBM}}, 0x1, 0x0},
{0x07, (0x07 << 3) | 0x0, {{LNKB, IRQBM}, {LNKC, IRQBM}, {LNKD, IRQBM}, {LNKA, IRQBM}}, 0x2, 0x0},
{0x07, (0x08 << 3) | 0x0, {{LNKC, IRQBM}, {LNKD, IRQBM}, {LNKA, IRQBM}, {LNKB, IRQBM}}, 0x3, 0x0},
{0x07, (0x09 << 3) | 0x0, {{LNKD, IRQBM}, {LNKA, IRQBM}, {LNKB, IRQBM}, {LNKC, IRQBM}}, 0x4, 0x0},
}
};
unsigned long write_pirq_routing_table(unsigned long addr)
{
return copy_pirq_routing_table(addr, &intel_irq_routing_table);
}
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