powerpc: fix linkstation and storcenter compilation breakage
[linux-2.6.git] / arch / powerpc / platforms / embedded6xx / linkstation.c
1 /*
2  * Board setup routines for the Buffalo Linkstation / Kurobox Platform.
3  *
4  * Copyright (C) 2006 G. Liakhovetski (g.liakhovetski@gmx.de)
5  *
6  * Based on sandpoint.c by Mark A. Greer
7  *
8  * This file is licensed under the terms of the GNU General Public License
9  * version 2.  This program is licensed "as is" without any warranty of
10  * any kind, whether express or implied.
11  */
12
13 #include <linux/kernel.h>
14 #include <linux/initrd.h>
15 #include <linux/of_platform.h>
16
17 #include <asm/time.h>
18 #include <asm/prom.h>
19 #include <asm/mpic.h>
20 #include <asm/pci-bridge.h>
21
22 #include "mpc10x.h"
23
24 static __initdata struct of_device_id of_bus_ids[] = {
25         { .type = "soc", },
26         { .compatible = "simple-bus", },
27         {},
28 };
29
30 static int __init declare_of_platform_devices(void)
31 {
32         of_platform_bus_probe(NULL, of_bus_ids, NULL);
33         return 0;
34 }
35 machine_device_initcall(linkstation, declare_of_platform_devices);
36
37 static int __init linkstation_add_bridge(struct device_node *dev)
38 {
39 #ifdef CONFIG_PCI
40         int len;
41         struct pci_controller *hose;
42         const int *bus_range;
43
44         printk("Adding PCI host bridge %s\n", dev->full_name);
45
46         bus_range = of_get_property(dev, "bus-range", &len);
47         if (bus_range == NULL || len < 2 * sizeof(int))
48                 printk(KERN_WARNING "Can't get bus-range for %s, assume"
49                                 " bus 0\n", dev->full_name);
50
51         hose = pcibios_alloc_controller(dev);
52         if (hose == NULL)
53                 return -ENOMEM;
54         hose->first_busno = bus_range ? bus_range[0] : 0;
55         hose->last_busno = bus_range ? bus_range[1] : 0xff;
56         setup_indirect_pci(hose, 0xfec00000, 0xfee00000, 0);
57
58         /* Interpret the "ranges" property */
59         /* This also maps the I/O region and sets isa_io/mem_base */
60         pci_process_bridge_OF_ranges(hose, dev, 1);
61 #endif
62         return 0;
63 }
64
65 static void __init linkstation_setup_arch(void)
66 {
67         struct device_node *np;
68
69         /* Lookup PCI host bridges */
70         for_each_compatible_node(np, "pci", "mpc10x-pci")
71                 linkstation_add_bridge(np);
72
73         printk(KERN_INFO "BUFFALO Network Attached Storage Series\n");
74         printk(KERN_INFO "(C) 2002-2005 BUFFALO INC.\n");
75 }
76
77 /*
78  * Interrupt setup and service.  Interrupts on the linkstation come
79  * from the four PCI slots plus onboard 8241 devices: I2C, DUART.
80  */
81 static void __init linkstation_init_IRQ(void)
82 {
83         struct mpic *mpic;
84         struct device_node *dnp;
85         const u32 *prop;
86         int size;
87         phys_addr_t paddr;
88
89         dnp = of_find_node_by_type(NULL, "open-pic");
90         if (dnp == NULL)
91                 return;
92
93         prop = of_get_property(dnp, "reg", &size);
94         paddr = (phys_addr_t)of_translate_address(dnp, prop);
95
96         mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY | MPIC_WANTS_RESET, 4, 32, " EPIC     ");
97         BUG_ON(mpic == NULL);
98
99         /* PCI IRQs */
100         mpic_assign_isu(mpic, 0, paddr + 0x10200);
101
102         /* I2C */
103         mpic_assign_isu(mpic, 1, paddr + 0x11000);
104
105         /* ttyS0, ttyS1 */
106         mpic_assign_isu(mpic, 2, paddr + 0x11100);
107
108         mpic_init(mpic);
109 }
110
111 extern void avr_uart_configure(void);
112 extern void avr_uart_send(const char);
113
114 static void linkstation_restart(char *cmd)
115 {
116         local_irq_disable();
117
118         /* Reset system via AVR */
119         avr_uart_configure();
120         /* Send reboot command */
121         avr_uart_send('C');
122
123         for(;;)  /* Spin until reset happens */
124                 avr_uart_send('G');     /* "kick" */
125 }
126
127 static void linkstation_power_off(void)
128 {
129         local_irq_disable();
130
131         /* Power down system via AVR */
132         avr_uart_configure();
133         /* send shutdown command */
134         avr_uart_send('E');
135
136         for(;;)  /* Spin until power-off happens */
137                 avr_uart_send('G');     /* "kick" */
138         /* NOTREACHED */
139 }
140
141 static void linkstation_halt(void)
142 {
143         linkstation_power_off();
144         /* NOTREACHED */
145 }
146
147 static void linkstation_show_cpuinfo(struct seq_file *m)
148 {
149         seq_printf(m, "vendor\t\t: Buffalo Technology\n");
150         seq_printf(m, "machine\t\t: Linkstation I/Kurobox(HG)\n");
151 }
152
153 static int __init linkstation_probe(void)
154 {
155         unsigned long root;
156
157         root = of_get_flat_dt_root();
158
159         if (!of_flat_dt_is_compatible(root, "linkstation"))
160                 return 0;
161         return 1;
162 }
163
164 define_machine(linkstation){
165         .name                   = "Buffalo Linkstation",
166         .probe                  = linkstation_probe,
167         .setup_arch             = linkstation_setup_arch,
168         .init_IRQ               = linkstation_init_IRQ,
169         .show_cpuinfo           = linkstation_show_cpuinfo,
170         .get_irq                = mpic_get_irq,
171         .restart                = linkstation_restart,
172         .power_off              = linkstation_power_off,
173         .halt                   = linkstation_halt,
174         .calibrate_decr         = generic_calibrate_decr,
175 };