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 Mialkowski <andrzej.mialkowski@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/ioport.h>
  30 #include <linux/slab.h>
  31 #include <linux/delay.h>
  32 #include <linux/serial.h>
  33 #include <linux/tty.h>
  34 #include <linux/serial_core.h>
  35 #include <linux/platform_device.h>
  36
  37 #include <asm/io.h>
  38 #include <asm/irq.h>
  39 #include <asm/pgtable.h>
  40 #include <asm/page.h>
  41 #include <asm/system.h>
  42 #include <asm/hardware.h>
  43 #include <asm/mach-types.h>
  44
  45 #include <asm/mach/pci.h>
  46 #include <asm/mach/map.h>
  47 #include <asm/mach/irq.h>
  48 #include <asm/mach/time.h>
  49 #include <asm/mach/arch.h>
  50 #include <asm/mach/flash.h>
  51
  52 /*************************************************************************
  53  * ENP-2611 timer tick configuration
  54  *************************************************************************/
  55 static void __init enp2611_timer_init(void)
  56 {
  57         ixp2000_init_time(50 * 1000 * 1000);
  58 }
  59
  60 static struct sys_timer enp2611_timer = {
  61         .init           = enp2611_timer_init,
  62         .offset         = ixp2000_gettimeoffset,
  63 };
  64
  65
  66 /*************************************************************************
  67  * ENP-2611 I/O
  68  *************************************************************************/
  69 static struct map_desc enp2611_io_desc[] __initdata = {
  70         {
  71                 .virtual        = ENP2611_CALEB_VIRT_BASE,
  72                 .pfn            = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE),
  73                 .length         = ENP2611_CALEB_SIZE,
  74                 .type           = MT_IXP2000_DEVICE,
  75         }, {
  76                 .virtual        = ENP2611_PM3386_0_VIRT_BASE,
  77                 .pfn            = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE),
  78                 .length         = ENP2611_PM3386_0_SIZE,
  79                 .type           = MT_IXP2000_DEVICE,
  80         }, {
  81                 .virtual        = ENP2611_PM3386_1_VIRT_BASE,
  82                 .pfn            = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE),
  83                 .length         = ENP2611_PM3386_1_SIZE,
  84                 .type           = MT_IXP2000_DEVICE,
  85         }
  86 };
  87
  88 void __init enp2611_map_io(void)
  89 {
  90         ixp2000_map_io();
  91         iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
  92 }
  93
  94
  95 /*************************************************************************
  96  * ENP-2611 PCI
  97  *************************************************************************/
  98 static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
  99 {
 100         sys->mem_offset = 0xe0000000;
 101         ixp2000_pci_setup(nr, sys);
 102         return 1;
 103 }
 104
 105 static void __init enp2611_pci_preinit(void)
 106 {
 107         ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
 108         ixp2000_pci_preinit();
 109         pcibios_setup("firmware");
 110 }
 111
 112 static inline int enp2611_pci_valid_device(struct pci_bus *bus,
 113                                                 unsigned int devfn)
 114 {
 115         /* The 82559 ethernet controller appears at both PCI:1:0:0 and
 116          * PCI:1:2:0, so let's pretend the second one isn't there.
 117          */
 118         if (bus->number == 0x01 && devfn == 0x10)
 119                 return 0;
 120
 121         return 1;
 122 }
 123
 124 static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
 125                                         int where, int size, u32 *value)
 126 {
 127         if (enp2611_pci_valid_device(bus, devfn))
 128                 return ixp2000_pci_read_config(bus, devfn, where, size, value);
 129
 130         return PCIBIOS_DEVICE_NOT_FOUND;
 131 }
 132
 133 static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
 134                                         int where, int size, u32 value)
 135 {
 136         if (enp2611_pci_valid_device(bus, devfn))
 137                 return ixp2000_pci_write_config(bus, devfn, where, size, value);
 138
 139         return PCIBIOS_DEVICE_NOT_FOUND;
 140 }
 141
 142 static struct pci_ops enp2611_pci_ops = {
 143         .read   = enp2611_pci_read_config,
 144         .write  = enp2611_pci_write_config
 145 };
 146
 147 static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
 148                                                 struct pci_sys_data *sys)
 149 {
 150         return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
 151 }
 152
 153 static int __init enp2611_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 154 {
 155         int irq;
 156
 157         if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 0) {
 158                 /* IXP2400. */
 159                 irq = IRQ_IXP2000_PCIA;
 160         } else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 1) {
 161                 /* 21555 non-transparent bridge.  */
 162                 irq = IRQ_IXP2000_PCIB;
 163         } else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 4) {
 164                 /* PCI2050B transparent bridge.  */
 165                 irq = -1;
 166         } else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 0) {
 167                 /* 82559 ethernet.  */
 168                 irq = IRQ_IXP2000_PCIA;
 169         } else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 1) {
 170                 /* SPI-3 option board.  */
 171                 irq = IRQ_IXP2000_PCIB;
 172         } else {
 173                 printk(KERN_ERR "enp2611_pci_map_irq() called for unknown "
 174                                 "device PCI:%d:%d:%d\n", dev->bus->number,
 175                                 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 176                 irq = -1;
 177         }
 178
 179         return irq;
 180 }
 181
 182 struct hw_pci enp2611_pci __initdata = {
 183         .nr_controllers = 1,
 184         .setup          = enp2611_pci_setup,
 185         .preinit        = enp2611_pci_preinit,
 186         .scan           = enp2611_pci_scan_bus,
 187         .map_irq        = enp2611_pci_map_irq,
 188 };
 189
 190 int __init enp2611_pci_init(void)
 191 {
 192         if (machine_is_enp2611())
 193                 pci_common_init(&enp2611_pci);
 194
 195         return 0;
 196 }
 197
 198 subsys_initcall(enp2611_pci_init);
 199
 200
 201 /*************************************************************************
 202  * ENP-2611 Machine Intialization
 203  *************************************************************************/
 204 static struct flash_platform_data enp2611_flash_platform_data = {
 205         .map_name       = "cfi_probe",
 206         .width          = 1,
 207 };
 208
 209 static struct ixp2000_flash_data enp2611_flash_data = {
 210         .platform_data  = &enp2611_flash_platform_data,
 211         .nr_banks       = 1
 212 };
 213
 214 static struct resource enp2611_flash_resource = {
 215         .start          = 0xc4000000,
 216         .end            = 0xc4000000 + 0x00ffffff,
 217         .flags          = IORESOURCE_MEM,
 218 };
 219
 220 static struct platform_device enp2611_flash = {
 221         .name           = "IXP2000-Flash",
 222         .id             = 0,
 223         .dev            = {
 224                 .platform_data = &enp2611_flash_data,
 225         },
 226         .num_resources  = 1,
 227         .resource       = &enp2611_flash_resource,
 228 };
 229
 230 static struct ixp2000_i2c_pins enp2611_i2c_gpio_pins = {
 231         .sda_pin        = ENP2611_GPIO_SDA,
 232         .scl_pin        = ENP2611_GPIO_SCL,
 233 };
 234
 235 static struct platform_device enp2611_i2c_controller = {
 236         .name           = "IXP2000-I2C",
 237         .id             = 0,
 238         .dev            = {
 239                 .platform_data = &enp2611_i2c_gpio_pins
 240         },
 241         .num_resources  = 0
 242 };
 243
 244 static struct platform_device *enp2611_devices[] __initdata = {
 245         &enp2611_flash,
 246         &enp2611_i2c_controller
 247 };
 248
 249 static void __init enp2611_init_machine(void)
 250 {
 251         platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
 252         ixp2000_uart_init();
 253 }
 254
 255
 256 MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
 257         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 258         .phys_io        = IXP2000_UART_PHYS_BASE,
 259         .io_pg_offst    = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
 260         .boot_params    = 0x00000100,
 261         .map_io         = enp2611_map_io,
 262         .init_irq       = ixp2000_init_irq,
 263         .timer          = &enp2611_timer,
 264         .init_machine   = enp2611_init_machine,
 265 MACHINE_END
 266
 267