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.h>
18 #include <linux/pci_hotplug.h>
22 #define DLPAR_KOBJ_NAME "control"
24 /* Those two have no quotes because they are passed to __ATTR() which
25 * stringifies the argument (yuck !)
27 #define ADD_SLOT_ATTR_NAME add_slot
28 #define REMOVE_SLOT_ATTR_NAME remove_slot
30 #define MAX_DRC_NAME_LEN 64
32 static ssize_t add_slot_store(struct kobject *kobj, struct kobj_attribute *attr,
33 const char *buf, size_t nbytes)
35 char drc_name[MAX_DRC_NAME_LEN];
39 if (nbytes >= MAX_DRC_NAME_LEN)
42 memcpy(drc_name, buf, nbytes);
44 end = strchr(drc_name, '\n');
46 end = &drc_name[nbytes];
49 rc = dlpar_add_slot(drc_name);
56 static ssize_t add_slot_show(struct kobject *kobj,
57 struct kobj_attribute *attr, char *buf)
59 return sprintf(buf, "0\n");
62 static ssize_t remove_slot_store(struct kobject *kobj,
63 struct kobj_attribute *attr,
64 const char *buf, size_t nbytes)
66 char drc_name[MAX_DRC_NAME_LEN];
70 if (nbytes >= MAX_DRC_NAME_LEN)
73 memcpy(drc_name, buf, nbytes);
75 end = strchr(drc_name, '\n');
77 end = &drc_name[nbytes];
80 rc = dlpar_remove_slot(drc_name);
87 static ssize_t remove_slot_show(struct kobject *kobj,
88 struct kobj_attribute *attr, char *buf)
90 return sprintf(buf, "0\n");
93 static struct kobj_attribute add_slot_attr =
94 __ATTR(ADD_SLOT_ATTR_NAME, 0644, add_slot_show, add_slot_store);
96 static struct kobj_attribute remove_slot_attr =
97 __ATTR(REMOVE_SLOT_ATTR_NAME, 0644, remove_slot_show, remove_slot_store);
99 static struct attribute *default_attrs[] = {
101 &remove_slot_attr.attr,
105 static struct attribute_group dlpar_attr_group = {
106 .attrs = default_attrs,
109 static struct kobject *dlpar_kobj;
111 int dlpar_sysfs_init(void)
115 dlpar_kobj = kobject_create_and_add(DLPAR_KOBJ_NAME,
116 &pci_slots_kset->kobj);
120 error = sysfs_create_group(dlpar_kobj, &dlpar_attr_group);
122 kobject_put(dlpar_kobj);
126 void dlpar_sysfs_exit(void)
128 sysfs_remove_group(dlpar_kobj, &dlpar_attr_group);
129 kobject_put(dlpar_kobj);