arch/arm/mach-ixp2000/enp2611.c

   1 /*
   2  * arch/arm/mach-ixp2000/enp2611.c
   3  *
   4  * Radisys ENP-2611 support.
   5  *
   6  * Created 2004 by Lennert Buytenhek from the ixdp2x01 code.  The
   7  * original version carries the following notices:
   8  *
   9  * Original Author: Andrzej Mialwoski <andrzej.mialwoski@intel.com>
  10  * Maintainer: Deepak Saxena <dsaxena@plexity.net>
  11  *
  12  * Copyright (C) 2002-2003 Intel Corp.
  13  * Copyright (C) 2003-2004 MontaVista Software, Inc.
  14  *
  15  *  This program is free software; you can redistribute  it and/or modify it
  16  *  under  the terms of  the GNU General  Public License as published by the
  17  *  Free Software Foundation;  either version 2 of the  License, or (at your
  18  *  option) any later version.
  19  */
  20
  21 #include <linux/config.h>
  22 #include <linux/kernel.h>
  23 #include <linux/init.h>
  24 #include <linux/mm.h>
  25 #include <linux/sched.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/bitops.h>
  28 #include <linux/pci.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/mm.h>
  31 #include <linux/init.h>
  32 #include <linux/ioport.h>
  33 #include <linux/slab.h>
  34 #include <linux/delay.h>
  35 #include <linux/serial.h>
  36 #include <linux/tty.h>
  37 #include <linux/serial_core.h>
  38 #include <linux/device.h>
  39
  40 #include <asm/io.h>
  41 #include <asm/irq.h>
  42 #include <asm/pgtable.h>
  43 #include <asm/page.h>
  44 #include <asm/system.h>
  45 #include <asm/hardware.h>
  46 #include <asm/mach-types.h>
  47
  48 #include <asm/mach/pci.h>
  49 #include <asm/mach/map.h>
  50 #include <asm/mach/irq.h>
  51 #include <asm/mach/time.h>
  52 #include <asm/mach/arch.h>
  53 #include <asm/mach/flash.h>
  54
  55 /*************************************************************************
  56  * ENP-2611 timer tick configuration
  57  *************************************************************************/
  58 static void __init enp2611_init_time(void)
  59 {
  60         ixp2000_init_time(50 * 1000 * 1000);
  61 }
  62
  63
  64 /*************************************************************************
  65  * ENP-2611 PCI
  66  *************************************************************************/
  67 static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
  68 {
  69         sys->mem_offset = 0xe0000000;
  70         ixp2000_pci_setup(nr, sys);
  71         return 1;
  72 }
  73
  74 static void __init enp2611_pci_preinit(void)
  75 {
  76         ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
  77         ixp2000_pci_preinit();
  78 }
  79
  80 static inline int enp2611_pci_valid_device(struct pci_bus *bus,
  81                                                 unsigned int devfn)
  82 {
  83         /* The 82559 ethernet controller appears at both PCI:1:0:0 and
  84          * PCI:1:2:0, so let's pretend the second one isn't there.
  85          */
  86         if (bus->number == 0x01 && devfn == 0x10)
  87                 return 0;
  88
  89         return 1;
  90 }
  91
  92 static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
  93                                         int where, int size, u32 *value)
  94 {
  95         if (enp2611_pci_valid_device(bus, devfn))
  96                 return ixp2000_pci_read_config(bus, devfn, where, size, value);
  97
  98         return PCIBIOS_DEVICE_NOT_FOUND;
  99 }
 100
 101 static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
 102                                         int where, int size, u32 value)
 103 {
 104         if (enp2611_pci_valid_device(bus, devfn))
 105                 return ixp2000_pci_write_config(bus, devfn, where, size, value);
 106
 107         return PCIBIOS_DEVICE_NOT_FOUND;
 108 }
 109
 110 static struct pci_ops enp2611_pci_ops = {
 111         .read   = enp2611_pci_read_config,
 112         .write  = enp2611_pci_write_config
 113 };
 114
 115 static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
 116                                                 struct pci_sys_data *sys)
 117 {
 118         return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
 119 }
 120
 121 static int __init enp2611_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 122 {
 123         int irq;
 124
 125         if (dev->bus->number == 0x00 && PCI_SLOT(dev->devfn) == 0x01) {
 126                 /* 21555 non-transparent bridge.  */
 127                 irq = IRQ_IXP2000_PCIB;
 128         } else if (dev->bus->number == 0x01 && PCI_SLOT(dev->devfn) == 0x00) {
 129                 /* 82559 ethernet.  */
 130                 irq = IRQ_IXP2000_PCIA;
 131         } else {
 132                 printk(KERN_INFO "enp2611_pci_map_irq for unknown device\n");
 133                 irq = IRQ_IXP2000_PCI;
 134         }
 135
 136         printk(KERN_INFO "Assigned IRQ %d to PCI:%d:%d:%d\n", irq,
 137                 dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 138
 139         return irq;
 140 }
 141
 142 struct hw_pci enp2611_pci __initdata = {
 143         .nr_controllers = 1,
 144         .setup          = enp2611_pci_setup,
 145         .preinit        = enp2611_pci_preinit,
 146         .scan           = enp2611_pci_scan_bus,
 147         .map_irq        = enp2611_pci_map_irq,
 148 };
 149
 150 int __init enp2611_pci_init(void)
 151 {
 152         pci_common_init(&enp2611_pci);
 153         return 0;
 154 }
 155
 156 subsys_initcall(enp2611_pci_init);
 157
 158
 159 /*************************************************************************
 160  * ENP-2611 Machine Intialization
 161  *************************************************************************/
 162 static struct flash_platform_data enp2611_flash_platform_data = {
 163         .map_name       = "cfi_probe",
 164         .width          = 1,
 165 };
 166
 167 static struct ixp2000_flash_data enp2611_flash_data = {
 168         .platform_data  = &enp2611_flash_platform_data,
 169         .nr_banks       = 1
 170 };
 171
 172 static struct resource enp2611_flash_resource = {
 173         .start          = 0xc4000000,
 174         .end            = 0xc4000000 + 0x00ffffff,
 175         .flags          = IORESOURCE_MEM,
 176 };
 177
 178 static struct platform_device enp2611_flash = {
 179         .name           = "IXP2000-Flash",
 180         .id             = 0,
 181         .dev            = {
 182                 .platform_data = &enp2611_flash_data,
 183         },
 184         .num_resources  = 1,
 185         .resource       = &enp2611_flash_resource,
 186 };
 187
 188 static struct platform_device *enp2611_devices[] __initdata = {
 189         &enp2611_flash
 190 };
 191
 192 static void __init enp2611_init_machine(void)
 193 {
 194         platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
 195 }
 196
 197
 198 #ifdef CONFIG_ARCH_ENP2611
 199 MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
 200         MAINTAINER("Lennert Buytenhek <buytenh@wantstofly.org>")
 201         BOOT_MEM(0x00000000, IXP2000_UART_PHYS_BASE, IXP2000_UART_VIRT_BASE)
 202         BOOT_PARAMS(0x00000100)
 203         MAPIO(ixp2000_map_io)
 204         INITIRQ(ixp2000_init_irq)
 205         INITTIME(enp2611_init_time)
 206         INIT_MACHINE(enp2611_init_machine)
 207 MACHINE_END
 208 #endif
 209
 210