2 * arch/arm/mach-ixp2000/enp2611.c
4 * Radisys ENP-2611 support.
6 * Created 2004 by Lennert Buytenhek from the ixdp2x01 code. The
7 * original version carries the following notices:
9 * Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
10 * Maintainer: Deepak Saxena <dsaxena@plexity.net>
12 * Copyright (C) 2002-2003 Intel Corp.
13 * Copyright (C) 2003-2004 MontaVista Software, Inc.
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.
21 #include <linux/config.h>
22 #include <linux/kernel.h>
23 #include <linux/init.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>
39 #include <asm/pgtable.h>
41 #include <asm/system.h>
42 #include <asm/hardware.h>
43 #include <asm/mach-types.h>
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>
52 /*************************************************************************
53 * ENP-2611 timer tick configuration
54 *************************************************************************/
55 static void __init enp2611_timer_init(void)
57 ixp2000_init_time(50 * 1000 * 1000);
60 static struct sys_timer enp2611_timer = {
61 .init = enp2611_timer_init,
62 .offset = ixp2000_gettimeoffset,
66 /*************************************************************************
68 *************************************************************************/
69 static struct map_desc enp2611_io_desc[] __initdata = {
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,
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,
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,
88 void __init enp2611_map_io(void)
91 iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
95 /*************************************************************************
97 *************************************************************************/
98 static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
100 sys->mem_offset = 0xe0000000;
101 ixp2000_pci_setup(nr, sys);
105 static void __init enp2611_pci_preinit(void)
107 ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
108 ixp2000_pci_preinit();
111 static inline int enp2611_pci_valid_device(struct pci_bus *bus,
114 /* The 82559 ethernet controller appears at both PCI:1:0:0 and
115 * PCI:1:2:0, so let's pretend the second one isn't there.
117 if (bus->number == 0x01 && devfn == 0x10)
123 static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
124 int where, int size, u32 *value)
126 if (enp2611_pci_valid_device(bus, devfn))
127 return ixp2000_pci_read_config(bus, devfn, where, size, value);
129 return PCIBIOS_DEVICE_NOT_FOUND;
132 static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
133 int where, int size, u32 value)
135 if (enp2611_pci_valid_device(bus, devfn))
136 return ixp2000_pci_write_config(bus, devfn, where, size, value);
138 return PCIBIOS_DEVICE_NOT_FOUND;
141 static struct pci_ops enp2611_pci_ops = {
142 .read = enp2611_pci_read_config,
143 .write = enp2611_pci_write_config
146 static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
147 struct pci_sys_data *sys)
149 return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
152 static int __init enp2611_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
156 if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 0) {
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. */
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;
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));
181 struct hw_pci enp2611_pci __initdata = {
183 .setup = enp2611_pci_setup,
184 .preinit = enp2611_pci_preinit,
185 .scan = enp2611_pci_scan_bus,
186 .map_irq = enp2611_pci_map_irq,
189 int __init enp2611_pci_init(void)
191 if (machine_is_enp2611())
192 pci_common_init(&enp2611_pci);
197 subsys_initcall(enp2611_pci_init);
200 /*************************************************************************
201 * ENP-2611 Machine Intialization
202 *************************************************************************/
203 static struct flash_platform_data enp2611_flash_platform_data = {
204 .map_name = "cfi_probe",
208 static struct ixp2000_flash_data enp2611_flash_data = {
209 .platform_data = &enp2611_flash_platform_data,
213 static struct resource enp2611_flash_resource = {
215 .end = 0xc4000000 + 0x00ffffff,
216 .flags = IORESOURCE_MEM,
219 static struct platform_device enp2611_flash = {
220 .name = "IXP2000-Flash",
223 .platform_data = &enp2611_flash_data,
226 .resource = &enp2611_flash_resource,
229 static struct ixp2000_i2c_pins enp2611_i2c_gpio_pins = {
230 .sda_pin = ENP2611_GPIO_SDA,
231 .scl_pin = ENP2611_GPIO_SCL,
234 static struct platform_device enp2611_i2c_controller = {
235 .name = "IXP2000-I2C",
238 .platform_data = &enp2611_i2c_gpio_pins
243 static struct platform_device *enp2611_devices[] __initdata = {
245 &enp2611_i2c_controller
248 static void __init enp2611_init_machine(void)
250 platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
255 MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
256 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
257 .phys_ram = 0x00000000,
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,