Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/kernel.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/mm.h> |
| 24 | #include <linux/sched.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/bitops.h> |
| 27 | #include <linux/pci.h> |
| 28 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/delay.h> |
| 30 | #include <linux/serial.h> |
| 31 | #include <linux/tty.h> |
| 32 | #include <linux/serial_core.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 33 | #include <linux/platform_device.h> |
Russell King | fced80c | 2008-09-06 12:10:45 +0100 | [diff] [blame] | 34 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <asm/irq.h> |
| 37 | #include <asm/pgtable.h> |
| 38 | #include <asm/page.h> |
| 39 | #include <asm/system.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 40 | #include <mach/hardware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <asm/mach-types.h> |
| 42 | |
| 43 | #include <asm/mach/pci.h> |
| 44 | #include <asm/mach/map.h> |
| 45 | #include <asm/mach/irq.h> |
| 46 | #include <asm/mach/time.h> |
| 47 | #include <asm/mach/arch.h> |
| 48 | #include <asm/mach/flash.h> |
| 49 | |
| 50 | /************************************************************************* |
| 51 | * ENP-2611 timer tick configuration |
| 52 | *************************************************************************/ |
| 53 | static void __init enp2611_timer_init(void) |
| 54 | { |
| 55 | ixp2000_init_time(50 * 1000 * 1000); |
| 56 | } |
| 57 | |
| 58 | static struct sys_timer enp2611_timer = { |
| 59 | .init = enp2611_timer_init, |
| 60 | .offset = ixp2000_gettimeoffset, |
| 61 | }; |
| 62 | |
| 63 | |
| 64 | /************************************************************************* |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 65 | * ENP-2611 I/O |
| 66 | *************************************************************************/ |
| 67 | static struct map_desc enp2611_io_desc[] __initdata = { |
| 68 | { |
| 69 | .virtual = ENP2611_CALEB_VIRT_BASE, |
Russell King | ca82d85 | 2005-11-03 10:06:35 +0000 | [diff] [blame] | 70 | .pfn = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE), |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 71 | .length = ENP2611_CALEB_SIZE, |
Russell King | db5b716 | 2008-09-07 12:42:51 +0100 | [diff] [blame] | 72 | .type = MT_DEVICE, |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 73 | }, { |
| 74 | .virtual = ENP2611_PM3386_0_VIRT_BASE, |
Russell King | ca82d85 | 2005-11-03 10:06:35 +0000 | [diff] [blame] | 75 | .pfn = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE), |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 76 | .length = ENP2611_PM3386_0_SIZE, |
Russell King | db5b716 | 2008-09-07 12:42:51 +0100 | [diff] [blame] | 77 | .type = MT_DEVICE, |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 78 | }, { |
| 79 | .virtual = ENP2611_PM3386_1_VIRT_BASE, |
Russell King | ca82d85 | 2005-11-03 10:06:35 +0000 | [diff] [blame] | 80 | .pfn = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE), |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 81 | .length = ENP2611_PM3386_1_SIZE, |
Russell King | db5b716 | 2008-09-07 12:42:51 +0100 | [diff] [blame] | 82 | .type = MT_DEVICE, |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 83 | } |
| 84 | }; |
| 85 | |
| 86 | void __init enp2611_map_io(void) |
| 87 | { |
| 88 | ixp2000_map_io(); |
| 89 | iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc)); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | /************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | * ENP-2611 PCI |
| 95 | *************************************************************************/ |
| 96 | static int enp2611_pci_setup(int nr, struct pci_sys_data *sys) |
| 97 | { |
| 98 | sys->mem_offset = 0xe0000000; |
| 99 | ixp2000_pci_setup(nr, sys); |
| 100 | return 1; |
| 101 | } |
| 102 | |
| 103 | static void __init enp2611_pci_preinit(void) |
| 104 | { |
| 105 | ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000); |
| 106 | ixp2000_pci_preinit(); |
Lennert Buytenhek | f8e5b28 | 2006-02-08 21:09:04 +0000 | [diff] [blame] | 107 | pcibios_setup("firmware"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | static inline int enp2611_pci_valid_device(struct pci_bus *bus, |
| 111 | unsigned int devfn) |
| 112 | { |
| 113 | /* The 82559 ethernet controller appears at both PCI:1:0:0 and |
| 114 | * PCI:1:2:0, so let's pretend the second one isn't there. |
| 115 | */ |
| 116 | if (bus->number == 0x01 && devfn == 0x10) |
| 117 | return 0; |
| 118 | |
| 119 | return 1; |
| 120 | } |
| 121 | |
| 122 | static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn, |
| 123 | int where, int size, u32 *value) |
| 124 | { |
| 125 | if (enp2611_pci_valid_device(bus, devfn)) |
| 126 | return ixp2000_pci_read_config(bus, devfn, where, size, value); |
| 127 | |
| 128 | return PCIBIOS_DEVICE_NOT_FOUND; |
| 129 | } |
| 130 | |
| 131 | static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn, |
| 132 | int where, int size, u32 value) |
| 133 | { |
| 134 | if (enp2611_pci_valid_device(bus, devfn)) |
| 135 | return ixp2000_pci_write_config(bus, devfn, where, size, value); |
| 136 | |
| 137 | return PCIBIOS_DEVICE_NOT_FOUND; |
| 138 | } |
| 139 | |
| 140 | static struct pci_ops enp2611_pci_ops = { |
| 141 | .read = enp2611_pci_read_config, |
| 142 | .write = enp2611_pci_write_config |
| 143 | }; |
| 144 | |
| 145 | static struct pci_bus * __init enp2611_pci_scan_bus(int nr, |
| 146 | struct pci_sys_data *sys) |
| 147 | { |
| 148 | return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys); |
| 149 | } |
| 150 | |
Ralf Baechle | d534194 | 2011-06-10 15:30:21 +0100 | [diff] [blame] | 151 | static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot, |
| 152 | u8 pin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
| 154 | int irq; |
| 155 | |
| 156 | if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 0) { |
| 157 | /* IXP2400. */ |
| 158 | irq = IRQ_IXP2000_PCIA; |
| 159 | } else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 1) { |
| 160 | /* 21555 non-transparent bridge. */ |
| 161 | irq = IRQ_IXP2000_PCIB; |
| 162 | } else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 4) { |
| 163 | /* PCI2050B transparent bridge. */ |
| 164 | irq = -1; |
| 165 | } else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 0) { |
| 166 | /* 82559 ethernet. */ |
| 167 | irq = IRQ_IXP2000_PCIA; |
| 168 | } else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 1) { |
| 169 | /* SPI-3 option board. */ |
| 170 | irq = IRQ_IXP2000_PCIB; |
| 171 | } else { |
| 172 | printk(KERN_ERR "enp2611_pci_map_irq() called for unknown " |
| 173 | "device PCI:%d:%d:%d\n", dev->bus->number, |
| 174 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); |
| 175 | irq = -1; |
| 176 | } |
| 177 | |
| 178 | return irq; |
| 179 | } |
| 180 | |
| 181 | struct hw_pci enp2611_pci __initdata = { |
| 182 | .nr_controllers = 1, |
| 183 | .setup = enp2611_pci_setup, |
| 184 | .preinit = enp2611_pci_preinit, |
| 185 | .scan = enp2611_pci_scan_bus, |
| 186 | .map_irq = enp2611_pci_map_irq, |
| 187 | }; |
| 188 | |
| 189 | int __init enp2611_pci_init(void) |
| 190 | { |
| 191 | if (machine_is_enp2611()) |
| 192 | pci_common_init(&enp2611_pci); |
| 193 | |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | subsys_initcall(enp2611_pci_init); |
| 198 | |
| 199 | |
| 200 | /************************************************************************* |
Simon Arlott | 6cbdc8c | 2007-05-11 20:40:30 +0100 | [diff] [blame] | 201 | * ENP-2611 Machine Initialization |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | *************************************************************************/ |
| 203 | static struct flash_platform_data enp2611_flash_platform_data = { |
| 204 | .map_name = "cfi_probe", |
| 205 | .width = 1, |
| 206 | }; |
| 207 | |
| 208 | static struct ixp2000_flash_data enp2611_flash_data = { |
| 209 | .platform_data = &enp2611_flash_platform_data, |
| 210 | .nr_banks = 1 |
| 211 | }; |
| 212 | |
| 213 | static struct resource enp2611_flash_resource = { |
| 214 | .start = 0xc4000000, |
| 215 | .end = 0xc4000000 + 0x00ffffff, |
| 216 | .flags = IORESOURCE_MEM, |
| 217 | }; |
| 218 | |
| 219 | static struct platform_device enp2611_flash = { |
| 220 | .name = "IXP2000-Flash", |
| 221 | .id = 0, |
| 222 | .dev = { |
| 223 | .platform_data = &enp2611_flash_data, |
| 224 | }, |
| 225 | .num_resources = 1, |
| 226 | .resource = &enp2611_flash_resource, |
| 227 | }; |
| 228 | |
Lennert Buytenhek | ea23d1a | 2005-06-25 16:58:21 +0100 | [diff] [blame] | 229 | static struct ixp2000_i2c_pins enp2611_i2c_gpio_pins = { |
| 230 | .sda_pin = ENP2611_GPIO_SDA, |
| 231 | .scl_pin = ENP2611_GPIO_SCL, |
| 232 | }; |
| 233 | |
| 234 | static struct platform_device enp2611_i2c_controller = { |
| 235 | .name = "IXP2000-I2C", |
| 236 | .id = 0, |
| 237 | .dev = { |
| 238 | .platform_data = &enp2611_i2c_gpio_pins |
| 239 | }, |
| 240 | .num_resources = 0 |
| 241 | }; |
| 242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | static struct platform_device *enp2611_devices[] __initdata = { |
Lennert Buytenhek | ea23d1a | 2005-06-25 16:58:21 +0100 | [diff] [blame] | 244 | &enp2611_flash, |
| 245 | &enp2611_i2c_controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | }; |
| 247 | |
| 248 | static void __init enp2611_init_machine(void) |
| 249 | { |
| 250 | platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices)); |
Lennert Buytenhek | 28187f2 | 2005-07-10 19:44:53 +0100 | [diff] [blame] | 251 | ixp2000_uart_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | |
| 255 | MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board") |
Russell King | e9dea0c | 2005-07-03 17:38:58 +0100 | [diff] [blame] | 256 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ |
Nicolas Pitre | ade5931 | 2011-07-05 22:38:13 -0400 | [diff] [blame] | 257 | .atag_offset = 0x100, |
Lennert Buytenhek | a6f1063 | 2005-11-01 19:44:24 +0000 | [diff] [blame] | 258 | .map_io = enp2611_map_io, |
Russell King | e9dea0c | 2005-07-03 17:38:58 +0100 | [diff] [blame] | 259 | .init_irq = ixp2000_init_irq, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | .timer = &enp2611_timer, |
Russell King | e9dea0c | 2005-07-03 17:38:58 +0100 | [diff] [blame] | 261 | .init_machine = enp2611_init_machine, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | MACHINE_END |
| 263 | |
| 264 | |