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1da177e4 LT |
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 | ||
1da177e4 LT |
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/slab.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/serial.h> | |
32 | #include <linux/tty.h> | |
33 | #include <linux/serial_core.h> | |
d052d1be | 34 | #include <linux/platform_device.h> |
fced80c7 | 35 | #include <linux/io.h> |
1da177e4 | 36 | |
1da177e4 LT |
37 | #include <asm/irq.h> |
38 | #include <asm/pgtable.h> | |
39 | #include <asm/page.h> | |
40 | #include <asm/system.h> | |
a09e64fb | 41 | #include <mach/hardware.h> |
1da177e4 LT |
42 | #include <asm/mach-types.h> |
43 | ||
44 | #include <asm/mach/pci.h> | |
45 | #include <asm/mach/map.h> | |
46 | #include <asm/mach/irq.h> | |
47 | #include <asm/mach/time.h> | |
48 | #include <asm/mach/arch.h> | |
49 | #include <asm/mach/flash.h> | |
50 | ||
51 | /************************************************************************* | |
52 | * ENP-2611 timer tick configuration | |
53 | *************************************************************************/ | |
54 | static void __init enp2611_timer_init(void) | |
55 | { | |
56 | ixp2000_init_time(50 * 1000 * 1000); | |
57 | } | |
58 | ||
59 | static struct sys_timer enp2611_timer = { | |
60 | .init = enp2611_timer_init, | |
61 | .offset = ixp2000_gettimeoffset, | |
62 | }; | |
63 | ||
64 | ||
a6f1063b LB |
65 | /************************************************************************* |
66 | * ENP-2611 I/O | |
67 | *************************************************************************/ | |
68 | static struct map_desc enp2611_io_desc[] __initdata = { | |
69 | { | |
70 | .virtual = ENP2611_CALEB_VIRT_BASE, | |
ca82d85b | 71 | .pfn = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE), |
a6f1063b | 72 | .length = ENP2611_CALEB_SIZE, |
db5b7169 | 73 | .type = MT_DEVICE, |
a6f1063b LB |
74 | }, { |
75 | .virtual = ENP2611_PM3386_0_VIRT_BASE, | |
ca82d85b | 76 | .pfn = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE), |
a6f1063b | 77 | .length = ENP2611_PM3386_0_SIZE, |
db5b7169 | 78 | .type = MT_DEVICE, |
a6f1063b LB |
79 | }, { |
80 | .virtual = ENP2611_PM3386_1_VIRT_BASE, | |
ca82d85b | 81 | .pfn = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE), |
a6f1063b | 82 | .length = ENP2611_PM3386_1_SIZE, |
db5b7169 | 83 | .type = MT_DEVICE, |
a6f1063b LB |
84 | } |
85 | }; | |
86 | ||
87 | void __init enp2611_map_io(void) | |
88 | { | |
89 | ixp2000_map_io(); | |
90 | iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc)); | |
91 | } | |
92 | ||
93 | ||
1da177e4 LT |
94 | /************************************************************************* |
95 | * ENP-2611 PCI | |
96 | *************************************************************************/ | |
97 | static int enp2611_pci_setup(int nr, struct pci_sys_data *sys) | |
98 | { | |
99 | sys->mem_offset = 0xe0000000; | |
100 | ixp2000_pci_setup(nr, sys); | |
101 | return 1; | |
102 | } | |
103 | ||
104 | static void __init enp2611_pci_preinit(void) | |
105 | { | |
106 | ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000); | |
107 | ixp2000_pci_preinit(); | |
f8e5b284 | 108 | pcibios_setup("firmware"); |
1da177e4 LT |
109 | } |
110 | ||
111 | static inline int enp2611_pci_valid_device(struct pci_bus *bus, | |
112 | unsigned int devfn) | |
113 | { | |
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. | |
116 | */ | |
117 | if (bus->number == 0x01 && devfn == 0x10) | |
118 | return 0; | |
119 | ||
120 | return 1; | |
121 | } | |
122 | ||
123 | static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn, | |
124 | int where, int size, u32 *value) | |
125 | { | |
126 | if (enp2611_pci_valid_device(bus, devfn)) | |
127 | return ixp2000_pci_read_config(bus, devfn, where, size, value); | |
128 | ||
129 | return PCIBIOS_DEVICE_NOT_FOUND; | |
130 | } | |
131 | ||
132 | static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn, | |
133 | int where, int size, u32 value) | |
134 | { | |
135 | if (enp2611_pci_valid_device(bus, devfn)) | |
136 | return ixp2000_pci_write_config(bus, devfn, where, size, value); | |
137 | ||
138 | return PCIBIOS_DEVICE_NOT_FOUND; | |
139 | } | |
140 | ||
141 | static struct pci_ops enp2611_pci_ops = { | |
142 | .read = enp2611_pci_read_config, | |
143 | .write = enp2611_pci_write_config | |
144 | }; | |
145 | ||
146 | static struct pci_bus * __init enp2611_pci_scan_bus(int nr, | |
147 | struct pci_sys_data *sys) | |
148 | { | |
149 | return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys); | |
150 | } | |
151 | ||
152 | static int __init enp2611_pci_map_irq(struct pci_dev *dev, u8 slot, 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 | ||
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 | /************************************************************************* | |
6cbdc8c5 | 201 | * ENP-2611 Machine Initialization |
1da177e4 LT |
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 | ||
ea23d1ac LB |
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 | ||
1da177e4 | 243 | static struct platform_device *enp2611_devices[] __initdata = { |
ea23d1ac LB |
244 | &enp2611_flash, |
245 | &enp2611_i2c_controller | |
1da177e4 LT |
246 | }; |
247 | ||
248 | static void __init enp2611_init_machine(void) | |
249 | { | |
250 | platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices)); | |
28187f2c | 251 | ixp2000_uart_init(); |
1da177e4 LT |
252 | } |
253 | ||
254 | ||
255 | MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board") | |
e9dea0c6 | 256 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ |
e9dea0c6 RK |
257 | .phys_io = IXP2000_UART_PHYS_BASE, |
258 | .io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc, | |
259 | .boot_params = 0x00000100, | |
a6f1063b | 260 | .map_io = enp2611_map_io, |
e9dea0c6 | 261 | .init_irq = ixp2000_init_irq, |
1da177e4 | 262 | .timer = &enp2611_timer, |
e9dea0c6 | 263 | .init_machine = enp2611_init_machine, |
1da177e4 LT |
264 | MACHINE_END |
265 | ||
266 |