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/*
* arch/arm/mach-ixp2000/ixdp2400.c
*
* IXDP2400 platform support
*
* Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
* Maintainer: Deepak Saxena <dsaxena@plexity.net>
*
* Copyright (C) 2002 Intel Corp.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/bitops.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/system.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/pci.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <asm/mach/flash.h>
#include <asm/mach/arch.h>
/*************************************************************************
* IXDP2400 timer tick
*************************************************************************/
static void __init ixdp2400_timer_init(void)
{
int numerator, denominator;
int denom_array[] = {2, 4, 8, 16, 1, 2, 4, 8};
numerator = (*(IXDP2400_CPLD_SYS_CLK_M) & 0xFF) *2;
denominator = denom_array[(*(IXDP2400_CPLD_SYS_CLK_N) & 0x7)];
ixp2000_init_time(((3125000 * numerator) / (denominator)) / 2);
}
static struct sys_timer ixdp2400_timer = {
.init = ixdp2400_timer_init,
.offset = ixp2000_gettimeoffset,
};
/*************************************************************************
* IXDP2400 PCI
*************************************************************************/
void __init ixdp2400_pci_preinit(void)
{
ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
ixp2000_pci_preinit();
pcibios_setup("firmware");
}
int ixdp2400_pci_setup(int nr, struct pci_sys_data *sys)
{
sys->mem_offset = 0xe0000000;
ixp2000_pci_setup(nr, sys);
return 1;
}
static int __init ixdp2400_pci_map_irq(const struct pci_dev *dev, u8 slot,
u8 pin)
{
if (ixdp2x00_master_npu()) {
/*
* Root bus devices. Slave NPU is only one with interrupt.
* Everything else, we just return -1 b/c nothing else
* on the root bus has interrupts.
*/
if(!dev->bus->self) {
if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN )
return IRQ_IXDP2400_INGRESS_NPU;
return -1;
}
/*
* Bridge behind the PMC slot.
* NOTE: Only INTA from the PMC slot is routed. VERY BAD.
*/
if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN &&
dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN &&
!dev->bus->parent->self->bus->parent)
return IRQ_IXDP2400_PMC;
/*
* Device behind the first bridge
*/
if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) {
switch(dev->devfn) {
case IXDP2400_MASTER_ENET_DEVFN:
return IRQ_IXDP2400_ENET;
case IXDP2400_MEDIA_DEVFN:
return IRQ_IXDP2400_MEDIA_PCI;
case IXDP2400_SWITCH_FABRIC_DEVFN:
return IRQ_IXDP2400_SF_PCI;
case IXDP2X00_PMC_DEVFN:
return IRQ_IXDP2400_PMC;
}
}
return -1;
} else return IRQ_IXP2000_PCIB; /* Slave NIC interrupt */
}
static void ixdp2400_pci_postinit(void)
{
struct pci_dev *dev;
if (ixdp2x00_master_npu()) {
dev = pci_get_bus_and_slot(1, IXDP2400_SLAVE_ENET_DEVFN);
pci_remove_bus_device(dev);
pci_dev_put(dev);
} else {
dev = pci_get_bus_and_slot(1, IXDP2400_MASTER_ENET_DEVFN);
pci_remove_bus_device(dev);
pci_dev_put(dev);
ixdp2x00_slave_pci_postinit();
}
}
static struct hw_pci ixdp2400_pci __initdata = {
.nr_controllers = 1,
.setup = ixdp2400_pci_setup,
.preinit = ixdp2400_pci_preinit,
.postinit = ixdp2400_pci_postinit,
.scan = ixp2000_pci_scan_bus,
.map_irq = ixdp2400_pci_map_irq,
};
int __init ixdp2400_pci_init(void)
{
if (machine_is_ixdp2400())
pci_common_init(&ixdp2400_pci);
return 0;
}
subsys_initcall(ixdp2400_pci_init);
void __init ixdp2400_init_irq(void)
{
ixdp2x00_init_irq(IXDP2400_CPLD_INT_STAT, IXDP2400_CPLD_INT_MASK, IXDP2400_NR_IRQS);
}
MACHINE_START(IXDP2400, "Intel IXDP2400 Development Platform")
/* Maintainer: MontaVista Software, Inc. */
.atag_offset = 0x100,
.map_io = ixdp2x00_map_io,
.init_irq = ixdp2400_init_irq,
.timer = &ixdp2400_timer,
.init_machine = ixdp2x00_init_machine,
.restart = ixp2000_restart,
MACHINE_END
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