| /* |
| * 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_stop_and_remove_bus_device(dev); |
| pci_dev_put(dev); |
| } else { |
| dev = pci_get_bus_and_slot(1, IXDP2400_MASTER_ENET_DEVFN); |
| pci_stop_and_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 |
| |