diff options
Diffstat (limited to 'arch/arm/mach-ixp2000/ixdp2800.c')
| -rw-r--r-- | arch/arm/mach-ixp2000/ixdp2800.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp2000/ixdp2800.c b/arch/arm/mach-ixp2000/ixdp2800.c new file mode 100644 index 00000000000..c4683aaff84 --- /dev/null +++ b/arch/arm/mach-ixp2000/ixdp2800.c @@ -0,0 +1,180 @@ +/* + * arch/arm/mach-ixp2000/ixdp2800.c + * + * IXDP2800 platform support + * + * Original Author: Jeffrey Daly <jeffrey.daly@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> + + +void ixdp2400_init_irq(void) +{ + ixdp2x00_init_irq(IXDP2800_CPLD_INT_STAT, IXDP2800_CPLD_INT_MASK, IXDP2400_NR_IRQS); +} + +/************************************************************************* + * IXDP2800 timer tick + *************************************************************************/ + +static void __init ixdp2800_timer_init(void) +{ + ixp2000_init_time(50000000); +} + +static struct sys_timer ixdp2800_timer = { + .init = ixdp2800_timer_init, + .offset = ixp2000_gettimeoffset, +}; + +/************************************************************************* + * IXDP2800 PCI + *************************************************************************/ +void __init ixdp2800_pci_preinit(void) +{ + printk("ixdp2x00_pci_preinit called\n"); + + *IXP2000_PCI_ADDR_EXT = 0x0000e000; + + *IXP2000_PCI_DRAM_BASE_ADDR_MASK = (0x40000000 - 1) & ~0xfffff; + *IXP2000_PCI_SRAM_BASE_ADDR_MASK = (0x2000000 - 1) & ~0x3ffff; + + ixp2000_pci_preinit(); +} + +int ixdp2800_pci_setup(int nr, struct pci_sys_data *sys) +{ + sys->mem_offset = 0x00000000; + + ixp2000_pci_setup(nr, sys); + + return 1; +} + +static int __init ixdp2800_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 which is invalid. + */ + if(!dev->bus->self) { + if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN ) + return IRQ_IXDP2800_INGRESS_NPU; + + return -1; + } + + /* + * Bridge behind the PMC slot. + */ + if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN && + dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN && + !dev->bus->parent->self->bus->parent) + return IRQ_IXDP2800_PMC; + + /* + * Device behind the first bridge + */ + if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) { + switch(dev->devfn) { + case IXDP2X00_PMC_DEVFN: + return IRQ_IXDP2800_PMC; + + case IXDP2800_MASTER_ENET_DEVFN: + return IRQ_IXDP2800_EGRESS_ENET; + + case IXDP2800_SWITCH_FABRIC_DEVFN: + return IRQ_IXDP2800_FABRIC; + } + } + + return -1; + } else return IRQ_IXP2000_PCIB; /* Slave NIC interrupt */ +} + +static void ixdp2800_pci_postinit(void) +{ + struct pci_dev *dev; + + if (ixdp2x00_master_npu()) { + dev = pci_find_slot(1, IXDP2800_SLAVE_ENET_DEVFN); + pci_remove_bus_device(dev); + } else { + dev = pci_find_slot(1, IXDP2800_MASTER_ENET_DEVFN); + pci_remove_bus_device(dev); + + ixdp2x00_slave_pci_postinit(); + } +} + +struct hw_pci ixdp2800_pci __initdata = { + .nr_controllers = 1, + .setup = ixdp2800_pci_setup, + .preinit = ixdp2800_pci_preinit, + .postinit = ixdp2800_pci_postinit, + .scan = ixp2000_pci_scan_bus, + .map_irq = ixdp2800_pci_map_irq, +}; + +int __init ixdp2800_pci_init(void) +{ + if (machine_is_ixdp2800()) + pci_common_init(&ixdp2800_pci); + + return 0; +} + +subsys_initcall(ixdp2800_pci_init); + +void ixdp2800_init_irq(void) +{ + ixdp2x00_init_irq(IXDP2800_CPLD_INT_STAT, IXDP2800_CPLD_INT_MASK, IXDP2800_NR_IRQS); +} + +MACHINE_START(IXDP2800, "Intel IXDP2800 Development Platform") + MAINTAINER("MontaVista Software, Inc.") + BOOT_MEM(0x00000000, IXP2000_UART_PHYS_BASE, IXP2000_UART_VIRT_BASE) + BOOT_PARAMS(0x00000100) + MAPIO(ixdp2x00_map_io) + INITIRQ(ixdp2800_init_irq) + .timer = &ixdp2800_timer, + INIT_MACHINE(ixdp2x00_init_machine) +MACHINE_END + |