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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Interface for Dynamic Logical Partitioning of I/O Slots on
* RPA-compliant PPC64 platform.
*
* John Rose <johnrose@austin.ibm.com>
* October 2003
*
* Copyright (C) 2003 IBM.
*/
#include <linux/kobject.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include "rpaphp.h"
#include "rpadlpar.h"
#include "../pci.h"
#define DLPAR_KOBJ_NAME "control"
/* Those two have no quotes because they are passed to __ATTR() which
* stringifies the argument (yuck !)
*/
#define ADD_SLOT_ATTR_NAME add_slot
#define REMOVE_SLOT_ATTR_NAME remove_slot
static ssize_t add_slot_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t nbytes)
{
char drc_name[MAX_DRC_NAME_LEN];
char *end;
int rc;
if (nbytes >= MAX_DRC_NAME_LEN)
return 0;
strscpy(drc_name, buf, nbytes + 1);
end = strchr(drc_name, '\n');
if (end)
*end = '\0';
rc = dlpar_add_slot(drc_name);
if (rc)
return rc;
return nbytes;
}
static ssize_t add_slot_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "0\n");
}
static ssize_t remove_slot_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t nbytes)
{
char drc_name[MAX_DRC_NAME_LEN];
int rc;
char *end;
if (nbytes >= MAX_DRC_NAME_LEN)
return 0;
strscpy(drc_name, buf, nbytes + 1);
end = strchr(drc_name, '\n');
if (end)
*end = '\0';
rc = dlpar_remove_slot(drc_name);
if (rc)
return rc;
return nbytes;
}
static ssize_t remove_slot_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "0\n");
}
static struct kobj_attribute add_slot_attr =
__ATTR(ADD_SLOT_ATTR_NAME, 0644, add_slot_show, add_slot_store);
static struct kobj_attribute remove_slot_attr =
__ATTR(REMOVE_SLOT_ATTR_NAME, 0644, remove_slot_show, remove_slot_store);
static struct attribute *default_attrs[] = {
&add_slot_attr.attr,
&remove_slot_attr.attr,
NULL,
};
static const struct attribute_group dlpar_attr_group = {
.attrs = default_attrs,
};
static struct kobject *dlpar_kobj;
int dlpar_sysfs_init(void)
{
int error;
dlpar_kobj = kobject_create_and_add(DLPAR_KOBJ_NAME,
&pci_slots_kset->kobj);
if (!dlpar_kobj)
return -EINVAL;
error = sysfs_create_group(dlpar_kobj, &dlpar_attr_group);
if (error)
kobject_put(dlpar_kobj);
return error;
}
void dlpar_sysfs_exit(void)
{
sysfs_remove_group(dlpar_kobj, &dlpar_attr_group);
kobject_put(dlpar_kobj);
}
|
