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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007 Juergen Beisert <juergen@kreuzholzen.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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Interrupt routing description for the AXUS TC320 board.
* It was not possible to read back the PIRQ table. There was no BIOS to ask
* for it, only a bootloader for an embedded OS.
* But with the method described here:
* http://coreboot.org/Creating_Valid_IRQ_Tables
* it was possible to detect the physical IRQ routing on this board.
*
* This is the physical routing on this board:
*
* IRQ 5530 USB Network
* controller northbridge device device
* 00.13.0 00.0e.00
* --------------------------------------------
* 11 INTA# INTA# n.c.
* 15 INTB# n.c. INTA#
* INTC# n.c. n.c.
* INTD# n.c. n.c.
*/
#include <arch/pirq_routing.h>
#define INT_A 0x01
#define INT_B 0x02
#define INT_C 0x03
#define INT_D 0x04
/*
* The USB controller should be connected to IRQ11,
* the network controller should be connected to IRQ15.
*/
#define IRQ_BITMAP_LINK0 0x0800
#define IRQ_BITMAP_LINK1 0x8000
#define IRQ_BITMAP_LINK2 0x0000
#define IRQ_BITMAP_LINK3 0x0000
/** Reserved interrupt channels for exclusive PCI usage. */
#define IRQ_DEVOTED_TO_PCI (IRQ_BITMAP_LINK0 | IRQ_BITMAP_LINK1)
/**
* Routing description.
* Documentation at: http://www.microsoft.com/whdc/archive/pciirq.mspx
*/
static const struct irq_routing_table intel_irq_routing_table = {
.signature = PIRQ_SIGNATURE, /* PIRQ signature */
.version = PIRQ_VERSION, /* PIRQ version */
.size = 32 + 16 * CONFIG_IRQ_SLOT_COUNT,/* Max. CONFIG_IRQ_SLOT_COUNT devices */
.rtr_bus = 0x00, /* Interrupt router bus */
.rtr_devfn = (0x12 << 3) | 0x0, /* Interrupt router device */
.exclusive_irqs = IRQ_DEVOTED_TO_PCI, /* IRQs devoted to PCI */
.rtr_vendor = 0x1078, /* Vendor */
.rtr_device = 0x0100, /* Device */
.miniport_data = 0, /* Miniport data */
.checksum = 0xe3, /* Checksum */
.slots = {
/*
* Definition for "slot#1". There is no real slot,
* the USB device is embedded...
*/
[0] = {
.bus = 0x00,
.devfn = (0x13 << 3) | 0x0,
.irq = {
/* Link Bitmap */
[0] = { INT_A, IRQ_BITMAP_LINK0 },
[1] = { INT_B, IRQ_BITMAP_LINK1 },
[2] = { INT_C, IRQ_BITMAP_LINK2 },
[3] = { INT_D, IRQ_BITMAP_LINK3 },
},
.slot = 0x0,
},
/*
* Definition for "slot#2". There is no real slot,
* the network device is soldered...
*/
[1] = {
.bus = 0x00,
.devfn = (0x0e << 3) | 0x0,
.irq = {
/* Link Bitmap */
[0] = { INT_B, IRQ_BITMAP_LINK1 },
[1] = { INT_C, IRQ_BITMAP_LINK2 },
[2] = { INT_D, IRQ_BITMAP_LINK3 },
[3] = { INT_A, IRQ_BITMAP_LINK0 },
},
.slot = 0x0,
}
}
};
/**
* Copy the IRQ routing table to memory.
*
* @param[in] addr Destination address (between 0xF0000...0x100000).
* @return TODO.
*/
unsigned long write_pirq_routing_table(unsigned long addr)
{
return copy_pirq_routing_table(addr, &intel_irq_routing_table);
}
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