1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
* Board setup routines for the storcenter
*
* Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org)
* Copyright 2007 Andy Wilcox, Jon Loeliger
*
* Based on linkstation.c by G. Liakhovetski
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of
* any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>
#include <asm/time.h>
#include <asm/mpic.h>
#include <asm/pci-bridge.h>
#include "mpc10x.h"
static const struct of_device_id storcenter_of_bus[] __initconst = {
{ .name = "soc", },
{},
};
static int __init storcenter_device_probe(void)
{
of_platform_bus_probe(NULL, storcenter_of_bus, NULL);
return 0;
}
machine_device_initcall(storcenter, storcenter_device_probe);
static int __init storcenter_add_bridge(struct device_node *dev)
{
#ifdef CONFIG_PCI
int len;
struct pci_controller *hose;
const int *bus_range;
printk("Adding PCI host bridge %pOF\n", dev);
hose = pcibios_alloc_controller(dev);
if (hose == NULL)
return -ENOMEM;
bus_range = of_get_property(dev, "bus-range", &len);
hose->first_busno = bus_range ? bus_range[0] : 0;
hose->last_busno = bus_range ? bus_range[1] : 0xff;
setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0);
/* Interpret the "ranges" property */
/* This also maps the I/O region and sets isa_io/mem_base */
pci_process_bridge_OF_ranges(hose, dev, 1);
#endif
return 0;
}
static void __init storcenter_setup_arch(void)
{
printk(KERN_INFO "IOMEGA StorCenter\n");
}
static void __init storcenter_setup_pci(void)
{
struct device_node *np;
/* Lookup PCI host bridges */
for_each_compatible_node(np, "pci", "mpc10x-pci")
storcenter_add_bridge(np);
}
/*
* Interrupt setup and service. Interrupts on the turbostation come
* from the four PCI slots plus onboard 8241 devices: I2C, DUART.
*/
static void __init storcenter_init_IRQ(void)
{
struct mpic *mpic;
mpic = mpic_alloc(NULL, 0, 0, 16, 0, " OpenPIC ");
BUG_ON(mpic == NULL);
/*
* 16 Serial Interrupts followed by 16 Internal Interrupts.
* I2C is the second internal, so it is at 17, 0x11020.
*/
mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200);
mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000);
mpic_init(mpic);
}
static void __noreturn storcenter_restart(char *cmd)
{
local_irq_disable();
/* Set exception prefix high - to the firmware */
mtmsr(mfmsr() | MSR_IP);
isync();
/* Wait for reset to happen */
for (;;) ;
}
define_machine(storcenter){
.name = "IOMEGA StorCenter",
.compatible = "iomega,storcenter",
.setup_arch = storcenter_setup_arch,
.discover_phbs = storcenter_setup_pci,
.init_IRQ = storcenter_init_IRQ,
.get_irq = mpic_get_irq,
.restart = storcenter_restart,
};
|
