2 * Interface for Dynamic Logical Partitioning of I/O Slots on
3 * RPA-compliant PPC64 platform.
5 * John Rose <johnrose@austin.ibm.com>
8 * Copyright (C) 2003 IBM.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
15 #include <linux/kobject.h>
16 #include <linux/string.h>
17 #include <linux/pci_hotplug.h>
20 #define DLPAR_KOBJ_NAME "control"
21 #define ADD_SLOT_ATTR_NAME "add_slot"
22 #define REMOVE_SLOT_ATTR_NAME "remove_slot"
24 #define MAX_DRC_NAME_LEN 64
27 static ssize_t add_slot_store(struct kobject *kobj, struct kobj_attribute *attr,
28 const char *buf, size_t nbytes)
30 char drc_name[MAX_DRC_NAME_LEN];
34 if (nbytes >= MAX_DRC_NAME_LEN)
37 memcpy(drc_name, buf, nbytes);
39 end = strchr(drc_name, '\n');
41 end = &drc_name[nbytes];
44 rc = dlpar_add_slot(drc_name);
51 static ssize_t add_slot_show(struct kobject *kobj,
52 struct kobj_attribute *attr, char *buf)
54 return sprintf(buf, "0\n");
57 static ssize_t remove_slot_store(struct kobject *kobj,
58 struct kobj_attribute *attr,
59 const char *buf, size_t nbytes)
61 char drc_name[MAX_DRC_NAME_LEN];
65 if (nbytes >= MAX_DRC_NAME_LEN)
68 memcpy(drc_name, buf, nbytes);
70 end = strchr(drc_name, '\n');
72 end = &drc_name[nbytes];
75 rc = dlpar_remove_slot(drc_name);
82 static ssize_t remove_slot_show(struct kobject *kobj,
83 struct kobj_attribute *attr, char *buf)
85 return sprintf(buf, "0\n");
88 static struct kobj_attribute add_slot_attr =
89 __ATTR(ADD_SLOT_ATTR_NAME, 0644, add_slot_show, add_slot_store);
91 static struct kobj_attribute remove_slot_attr =
92 __ATTR(REMOVE_SLOT_ATTR_NAME, 0644, remove_slot_show, remove_slot_store);
94 static struct attribute *default_attrs[] = {
96 &remove_slot_attr.attr,
100 static struct attribute_group dlpar_attr_group = {
101 .attrs = default_attrs,
104 static struct kobject *dlpar_kobj;
106 int dlpar_sysfs_init(void)
110 dlpar_kobj = kobject_create_and_add(DLPAR_KOBJ_NAME,
111 &pci_hotplug_slots_kset->kobj);
115 error = sysfs_create_group(dlpar_kobj, &dlpar_attr_group);
117 kobject_put(dlpar_kobj);
121 void dlpar_sysfs_exit(void)
123 sysfs_remove_group(dlpar_kobj, &dlpar_attr_group);
124 kobject_put(dlpar_kobj);