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 <asm/system.h>
40 #include <mach/hardware.h>
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 *************************************************************************/
enp2611_timer_init(void)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 /*************************************************************************
65 * ENP-2611 I/O
66 *************************************************************************/
67 static struct map_desc enp2611_io_desc[] __initdata = {
68 {
69 .virtual = ENP2611_CALEB_VIRT_BASE,
70 .pfn = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE),
71 .length = ENP2611_CALEB_SIZE,
72 .type = MT_DEVICE,
73 }, {
74 .virtual = ENP2611_PM3386_0_VIRT_BASE,
75 .pfn = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE),
76 .length = ENP2611_PM3386_0_SIZE,
77 .type = MT_DEVICE,
78 }, {
79 .virtual = ENP2611_PM3386_1_VIRT_BASE,
80 .pfn = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE),
81 .length = ENP2611_PM3386_1_SIZE,
82 .type = MT_DEVICE,
83 }
84 };
85
enp2611_map_io(void)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 /*************************************************************************
94 * ENP-2611 PCI
95 *************************************************************************/
enp2611_pci_setup(int nr,struct pci_sys_data * sys)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
enp2611_pci_preinit(void)103 static void __init enp2611_pci_preinit(void)
104 {
105 ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
106 ixp2000_pci_preinit();
107 pcibios_setup("firmware");
108 }
109
enp2611_pci_valid_device(struct pci_bus * bus,unsigned int devfn)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
enp2611_pci_read_config(struct pci_bus * bus,unsigned int devfn,int where,int size,u32 * value)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
enp2611_pci_write_config(struct pci_bus * bus,unsigned int devfn,int where,int size,u32 value)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
enp2611_pci_scan_bus(int nr,struct pci_sys_data * sys)145 static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
146 struct pci_sys_data *sys)
147 {
148 return pci_scan_root_bus(NULL, sys->busnr, &enp2611_pci_ops, sys,
149 &sys->resources);
150 }
151
enp2611_pci_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)152 static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
153 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
enp2611_pci_init(void)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 Initialization
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
enp2611_init_machine(void)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 .atag_offset = 0x100,
259 .map_io = enp2611_map_io,
260 .init_irq = ixp2000_init_irq,
261 .timer = &enp2611_timer,
262 .init_machine = enp2611_init_machine,
263 .restart = ixp2000_restart,
264 MACHINE_END
265
266
267