181 lines
4.3 KiB
C
181 lines
4.3 KiB
C
/*
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* arch/arm/mach-ixp2000/ixdp2800.c
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*
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* IXDP2800 platform support
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*
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* Original Author: Jeffrey Daly <jeffrey.daly@intel.com>
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* Maintainer: Deepak Saxena <dsaxena@plexity.net>
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*
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* Copyright (C) 2002 Intel Corp.
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* Copyright (C) 2003-2004 MontaVista Software, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/bitops.h>
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#include <linux/pci.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/system.h>
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/mach/pci.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/time.h>
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#include <asm/mach/flash.h>
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#include <asm/mach/arch.h>
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void ixdp2400_init_irq(void)
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{
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ixdp2x00_init_irq(IXDP2800_CPLD_INT_STAT, IXDP2800_CPLD_INT_MASK, IXDP2400_NR_IRQS);
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}
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/*************************************************************************
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* IXDP2800 timer tick
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*************************************************************************/
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static void __init ixdp2800_timer_init(void)
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{
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ixp2000_init_time(50000000);
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}
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static struct sys_timer ixdp2800_timer = {
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.init = ixdp2800_timer_init,
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.offset = ixp2000_gettimeoffset,
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};
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/*************************************************************************
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* IXDP2800 PCI
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*************************************************************************/
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void __init ixdp2800_pci_preinit(void)
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{
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printk("ixdp2x00_pci_preinit called\n");
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*IXP2000_PCI_ADDR_EXT = 0x0000e000;
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*IXP2000_PCI_DRAM_BASE_ADDR_MASK = (0x40000000 - 1) & ~0xfffff;
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*IXP2000_PCI_SRAM_BASE_ADDR_MASK = (0x2000000 - 1) & ~0x3ffff;
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ixp2000_pci_preinit();
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}
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int ixdp2800_pci_setup(int nr, struct pci_sys_data *sys)
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{
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sys->mem_offset = 0x00000000;
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ixp2000_pci_setup(nr, sys);
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return 1;
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}
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static int __init ixdp2800_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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if (ixdp2x00_master_npu()) {
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/*
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* Root bus devices. Slave NPU is only one with interrupt.
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* Everything else, we just return -1 which is invalid.
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*/
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if(!dev->bus->self) {
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if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN )
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return IRQ_IXDP2800_INGRESS_NPU;
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return -1;
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}
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/*
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* Bridge behind the PMC slot.
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*/
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if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN &&
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dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN &&
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!dev->bus->parent->self->bus->parent)
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return IRQ_IXDP2800_PMC;
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/*
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* Device behind the first bridge
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*/
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if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) {
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switch(dev->devfn) {
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case IXDP2X00_PMC_DEVFN:
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return IRQ_IXDP2800_PMC;
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case IXDP2800_MASTER_ENET_DEVFN:
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return IRQ_IXDP2800_EGRESS_ENET;
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case IXDP2800_SWITCH_FABRIC_DEVFN:
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return IRQ_IXDP2800_FABRIC;
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}
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}
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return -1;
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} else return IRQ_IXP2000_PCIB; /* Slave NIC interrupt */
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}
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static void ixdp2800_pci_postinit(void)
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{
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struct pci_dev *dev;
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if (ixdp2x00_master_npu()) {
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dev = pci_find_slot(1, IXDP2800_SLAVE_ENET_DEVFN);
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pci_remove_bus_device(dev);
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} else {
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dev = pci_find_slot(1, IXDP2800_MASTER_ENET_DEVFN);
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pci_remove_bus_device(dev);
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ixdp2x00_slave_pci_postinit();
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}
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}
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struct hw_pci ixdp2800_pci __initdata = {
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.nr_controllers = 1,
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.setup = ixdp2800_pci_setup,
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.preinit = ixdp2800_pci_preinit,
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.postinit = ixdp2800_pci_postinit,
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.scan = ixp2000_pci_scan_bus,
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.map_irq = ixdp2800_pci_map_irq,
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};
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int __init ixdp2800_pci_init(void)
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{
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if (machine_is_ixdp2800())
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pci_common_init(&ixdp2800_pci);
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return 0;
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}
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subsys_initcall(ixdp2800_pci_init);
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void ixdp2800_init_irq(void)
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{
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ixdp2x00_init_irq(IXDP2800_CPLD_INT_STAT, IXDP2800_CPLD_INT_MASK, IXDP2800_NR_IRQS);
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}
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MACHINE_START(IXDP2800, "Intel IXDP2800 Development Platform")
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MAINTAINER("MontaVista Software, Inc.")
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BOOT_MEM(0x00000000, IXP2000_UART_PHYS_BASE, IXP2000_UART_VIRT_BASE)
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BOOT_PARAMS(0x00000100)
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MAPIO(ixdp2x00_map_io)
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INITIRQ(ixdp2800_init_irq)
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.timer = &ixdp2800_timer,
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INIT_MACHINE(ixdp2x00_init_machine)
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MACHINE_END
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