You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
1.8 KiB
80 lines
1.8 KiB
/*
|
|
* arch/arm/mach-iop33x/iq80331-pci.c
|
|
*
|
|
* PCI support for the Intel IQ80331 reference board
|
|
*
|
|
* Author: Dave Jiang <dave.jiang@intel.com>
|
|
* Copyright (C) 2003, 2004 Intel Corp.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
#include <linux/string.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <asm/hardware.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/mach/pci.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
/*
|
|
* The following macro is used to lookup irqs in a standard table
|
|
* format for those systems that do not already have PCI
|
|
* interrupts properly routed. We assume 1 <= pin <= 4
|
|
*/
|
|
#define PCI_IRQ_TABLE_LOOKUP(minid,maxid) \
|
|
({ int _ctl_ = -1; \
|
|
unsigned int _idsel = idsel - minid; \
|
|
if (_idsel <= maxid) \
|
|
_ctl_ = pci_irq_table[_idsel][pin-1]; \
|
|
_ctl_; })
|
|
|
|
#define INTA IRQ_IQ80331_INTA
|
|
#define INTB IRQ_IQ80331_INTB
|
|
#define INTC IRQ_IQ80331_INTC
|
|
#define INTD IRQ_IQ80331_INTD
|
|
|
|
//#define INTE IRQ_IQ80331_I82544
|
|
|
|
static inline int __init
|
|
iq80331_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
|
|
{
|
|
static int pci_irq_table[][4] = {
|
|
/*
|
|
* PCI IDSEL/INTPIN->INTLINE
|
|
* A B C D
|
|
*/
|
|
{INTB, INTC, INTD, INTA}, /* PCI-X Slot */
|
|
{INTC, INTC, INTC, INTC}, /* GigE */
|
|
};
|
|
|
|
BUG_ON(pin < 1 || pin > 4);
|
|
|
|
return PCI_IRQ_TABLE_LOOKUP(1, 7);
|
|
}
|
|
|
|
static struct hw_pci iq80331_pci __initdata = {
|
|
.swizzle = pci_std_swizzle,
|
|
.nr_controllers = 1,
|
|
.setup = iop3xx_pci_setup,
|
|
.scan = iop3xx_pci_scan_bus,
|
|
.preinit = iop3xx_pci_preinit,
|
|
.map_irq = iq80331_map_irq
|
|
};
|
|
|
|
static int __init iq80331_pci_init(void)
|
|
{
|
|
if (machine_is_iq80331())
|
|
pci_common_init(&iq80331_pci);
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(iq80331_pci_init);
|
|
|
|
|
|
|
|
|
|
|