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.
181 lines
4.5 KiB
181 lines
4.5 KiB
/*
|
|
* 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/config.h>
|
|
#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/slab.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/page.h>
|
|
#include <asm/system.h>
|
|
#include <asm/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();
|
|
}
|
|
|
|
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(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_find_slot(1, IXDP2400_SLAVE_ENET_DEVFN);
|
|
pci_remove_bus_device(dev);
|
|
} else {
|
|
dev = pci_find_slot(1, IXDP2400_MASTER_ENET_DEVFN);
|
|
pci_remove_bus_device(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 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. */
|
|
.phys_ram = 0x00000000,
|
|
.phys_io = IXP2000_UART_PHYS_BASE,
|
|
.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
|
|
.boot_params = 0x00000100,
|
|
.map_io = ixdp2x00_map_io,
|
|
.init_irq = ixdp2400_init_irq,
|
|
.timer = &ixdp2400_timer,
|
|
.init_machine = ixdp2x00_init_machine,
|
|
MACHINE_END
|
|
|
|
|