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/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>
29 #include <linux/delay.h>
30 #include <linux/serial.h>
31 #include <linux/tty.h>
32 #include <linux/serial_core.h>
33 #include <linux/platform_device.h>
34 #include <linux/io.h>
35
36 #include <asm/irq.h>
37 #include <asm/pgtable.h>
38 #include <asm/page.h>
39 #include <mach/hardware.h>
40 #include <asm/mach-types.h>
41
42 #include <asm/mach/pci.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/irq.h>
45 #include <asm/mach/time.h>
46 #include <asm/mach/arch.h>
47 #include <asm/mach/flash.h>
48
49 /*************************************************************************
50 * ENP-2611 timer tick configuration
51 *************************************************************************/
enp2611_timer_init(void)52 static void __init enp2611_timer_init(void)
53 {
54 ixp2000_init_time(50 * 1000 * 1000);
55 }
56
57 static struct sys_timer enp2611_timer = {
58 .init = enp2611_timer_init,
59 .offset = ixp2000_gettimeoffset,
60 };
61
62
63 /*************************************************************************
64 * ENP-2611 I/O
65 *************************************************************************/
66 static struct map_desc enp2611_io_desc[] __initdata = {
67 {
68 .virtual = ENP2611_CALEB_VIRT_BASE,
69 .pfn = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE),
70 .length = ENP2611_CALEB_SIZE,
71 .type = MT_DEVICE,
72 }, {
73 .virtual = ENP2611_PM3386_0_VIRT_BASE,
74 .pfn = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE),
75 .length = ENP2611_PM3386_0_SIZE,
76 .type = MT_DEVICE,
77 }, {
78 .virtual = ENP2611_PM3386_1_VIRT_BASE,
79 .pfn = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE),
80 .length = ENP2611_PM3386_1_SIZE,
81 .type = MT_DEVICE,
82 }
83 };
84
enp2611_map_io(void)85 void __init enp2611_map_io(void)
86 {
87 ixp2000_map_io();
88 iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
89 }
90
91
92 /*************************************************************************
93 * ENP-2611 PCI
94 *************************************************************************/
enp2611_pci_setup(int nr,struct pci_sys_data * sys)95 static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
96 {
97 sys->mem_offset = 0xe0000000;
98 ixp2000_pci_setup(nr, sys);
99 return 1;
100 }
101
enp2611_pci_preinit(void)102 static void __init enp2611_pci_preinit(void)
103 {
104 ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
105 ixp2000_pci_preinit();
106 pcibios_setup("firmware");
107 }
108
enp2611_pci_valid_device(struct pci_bus * bus,unsigned int devfn)109 static inline int enp2611_pci_valid_device(struct pci_bus *bus,
110 unsigned int devfn)
111 {
112 /* The 82559 ethernet controller appears at both PCI:1:0:0 and
113 * PCI:1:2:0, so let's pretend the second one isn't there.
114 */
115 if (bus->number == 0x01 && devfn == 0x10)
116 return 0;
117
118 return 1;
119 }
120
enp2611_pci_read_config(struct pci_bus * bus,unsigned int devfn,int where,int size,u32 * value)121 static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
122 int where, int size, u32 *value)
123 {
124 if (enp2611_pci_valid_device(bus, devfn))
125 return ixp2000_pci_read_config(bus, devfn, where, size, value);
126
127 return PCIBIOS_DEVICE_NOT_FOUND;
128 }
129
enp2611_pci_write_config(struct pci_bus * bus,unsigned int devfn,int where,int size,u32 value)130 static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
131 int where, int size, u32 value)
132 {
133 if (enp2611_pci_valid_device(bus, devfn))
134 return ixp2000_pci_write_config(bus, devfn, where, size, value);
135
136 return PCIBIOS_DEVICE_NOT_FOUND;
137 }
138
139 static struct pci_ops enp2611_pci_ops = {
140 .read = enp2611_pci_read_config,
141 .write = enp2611_pci_write_config
142 };
143
enp2611_pci_scan_bus(int nr,struct pci_sys_data * sys)144 static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
145 struct pci_sys_data *sys)
146 {
147 return pci_scan_root_bus(NULL, sys->busnr, &enp2611_pci_ops, sys,
148 &sys->resources);
149 }
150
enp2611_pci_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)151 static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
152 u8 pin)
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
enp2611_pci_init(void)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 /*************************************************************************
201 * ENP-2611 Machine Initialization
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
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
243 static struct platform_device *enp2611_devices[] __initdata = {
244 &enp2611_flash,
245 &enp2611_i2c_controller
246 };
247
enp2611_init_machine(void)248 static void __init enp2611_init_machine(void)
249 {
250 platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
251 ixp2000_uart_init();
252 }
253
254
255 MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
256 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
257 .atag_offset = 0x100,
258 .map_io = enp2611_map_io,
259 .init_irq = ixp2000_init_irq,
260 .timer = &enp2611_timer,
261 .init_machine = enp2611_init_machine,
262 .restart = ixp2000_restart,
263 MACHINE_END
264
265
266