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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/* sbus.c: SBus support routines.
*
* Copyright (C) 1995, 2006 David S. Miller (davem@davemloft.net)
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/of_device.h>
#include <asm/system.h>
#include <asm/sbus.h>
#include <asm/dma.h>
#include <asm/oplib.h>
#include <asm/prom.h>
#include <asm/irq.h>
static ssize_t
show_sbusobppath_attr(struct device * dev, struct device_attribute * attr, char * buf)
{
struct sbus_dev *sbus;
sbus = to_sbus_device(dev);
return snprintf (buf, PAGE_SIZE, "%s\n", sbus->ofdev.node->full_name);
}
static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH, show_sbusobppath_attr, NULL);
static void __init fill_sbus_device_iommu(struct sbus_dev *sdev)
{
struct of_device *op = of_find_device_by_node(sdev->ofdev.node);
struct dev_archdata *sd, *bus_sd;
struct sbus_bus *sbus;
sbus = sdev->bus;
bus_sd = &sbus->ofdev.dev.archdata;
sd = &sdev->ofdev.dev.archdata;
sd->iommu = bus_sd->iommu;
sd->stc = bus_sd->stc;
sd = &op->dev.archdata;
sd->iommu = bus_sd->iommu;
sd->stc = bus_sd->stc;
}
static void __init fill_sbus_device(struct device_node *dp, struct sbus_dev *sdev)
{
struct dev_archdata *sd;
int err;
sd = &sdev->ofdev.dev.archdata;
sd->prom_node = dp;
sd->op = &sdev->ofdev;
sdev->ofdev.node = dp;
if (sdev->parent)
sdev->ofdev.dev.parent = &sdev->parent->ofdev.dev;
else
sdev->ofdev.dev.parent = &sdev->bus->ofdev.dev;
sdev->ofdev.dev.bus = &sbus_bus_type;
dev_set_name(&sdev->ofdev.dev, "sbus[%08x]", dp->node);
if (of_device_register(&sdev->ofdev) != 0)
printk(KERN_DEBUG "sbus: device registration error for %s!\n",
dp->path_component_name);
/* WE HAVE BEEN INVADED BY ALIENS! */
err = sysfs_create_file(&sdev->ofdev.dev.kobj, &dev_attr_obppath.attr);
fill_sbus_device_iommu(sdev);
}
static void __init sdev_insert(struct sbus_dev *sdev, struct sbus_dev **root)
{
while (*root)
root = &(*root)->next;
*root = sdev;
sdev->next = NULL;
}
static void __init walk_children(struct device_node *dp, struct sbus_dev *parent, struct sbus_bus *sbus)
{
dp = dp->child;
while (dp) {
struct sbus_dev *sdev;
sdev = kzalloc(sizeof(struct sbus_dev), GFP_ATOMIC);
if (sdev) {
sdev_insert(sdev, &parent->child);
sdev->bus = sbus;
sdev->parent = parent;
fill_sbus_device(dp, sdev);
walk_children(dp, sdev, sbus);
}
dp = dp->sibling;
}
}
static void __init build_one_sbus(struct device_node *dp, int num_sbus)
{
struct device_node *dev_dp;
struct sbus_bus *sbus;
sbus = kzalloc(sizeof(struct sbus_bus), GFP_ATOMIC);
if (!sbus)
return;
sbus_setup_iommu(sbus, dp);
printk("sbus%d: ", num_sbus);
sbus->ofdev.node = dp;
sbus->ofdev.dev.parent = NULL;
sbus->ofdev.dev.bus = &sbus_bus_type;
dev_set_name(&sbus->ofdev.dev, "sbus%d", num_sbus);
if (of_device_register(&sbus->ofdev) != 0)
printk(KERN_DEBUG "sbus: device registration error for %s!\n",
dev_name(&sbus->ofdev.dev));
dev_dp = dp->child;
while (dev_dp) {
struct sbus_dev *sdev;
sdev = kzalloc(sizeof(struct sbus_dev), GFP_ATOMIC);
if (sdev) {
sdev_insert(sdev, &sbus->devices);
sdev->bus = sbus;
sdev->parent = NULL;
sdev->ofdev.dev.archdata.iommu =
sbus->ofdev.dev.archdata.iommu;
sdev->ofdev.dev.archdata.stc =
sbus->ofdev.dev.archdata.stc;
fill_sbus_device(dev_dp, sdev);
walk_children(dev_dp, sdev, sbus);
}
dev_dp = dev_dp->sibling;
}
}
static int __init sbus_init(void)
{
struct device_node *dp;
const char *sbus_name = "sbus";
int num_sbus = 0;
if (sparc_cpu_model == sun4d)
sbus_name = "sbi";
for_each_node_by_name(dp, sbus_name) {
build_one_sbus(dp, num_sbus);
num_sbus++;
}
sbus_arch_postinit();
return 0;
}
subsys_initcall(sbus_init);
|
