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fc8c2d76 RA |
1 | /* |
2 | * This file supports the /sys/firmware/sgi_uv interfaces for SGI UV. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | * | |
18 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
19 | * Copyright (c) Russ Anderson | |
20 | */ | |
21 | ||
edbaa603 | 22 | #include <linux/device.h> |
fc8c2d76 | 23 | #include <asm/uv/bios.h> |
06aa05b3 | 24 | #include <asm/uv/uv.h> |
fc8c2d76 RA |
25 | |
26 | struct kobject *sgi_uv_kobj; | |
27 | ||
28 | static ssize_t partition_id_show(struct kobject *kobj, | |
29 | struct kobj_attribute *attr, char *buf) | |
30 | { | |
31 | return snprintf(buf, PAGE_SIZE, "%ld\n", sn_partition_id); | |
32 | } | |
33 | ||
34 | static ssize_t coherence_id_show(struct kobject *kobj, | |
35 | struct kobj_attribute *attr, char *buf) | |
36 | { | |
ef93bf80 | 37 | return snprintf(buf, PAGE_SIZE, "%ld\n", uv_partition_coherence_id()); |
fc8c2d76 RA |
38 | } |
39 | ||
40 | static struct kobj_attribute partition_id_attr = | |
41 | __ATTR(partition_id, S_IRUGO, partition_id_show, NULL); | |
42 | ||
43 | static struct kobj_attribute coherence_id_attr = | |
44 | __ATTR(coherence_id, S_IRUGO, coherence_id_show, NULL); | |
45 | ||
46 | ||
47 | static int __init sgi_uv_sysfs_init(void) | |
48 | { | |
49 | unsigned long ret; | |
50 | ||
06aa05b3 RA |
51 | if (!is_uv_system()) |
52 | return -ENODEV; | |
53 | ||
fc8c2d76 RA |
54 | if (!sgi_uv_kobj) |
55 | sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj); | |
56 | if (!sgi_uv_kobj) { | |
3235dc3f | 57 | printk(KERN_WARNING "kobject_create_and_add sgi_uv failed\n"); |
fc8c2d76 RA |
58 | return -EINVAL; |
59 | } | |
60 | ||
61 | ret = sysfs_create_file(sgi_uv_kobj, &partition_id_attr.attr); | |
62 | if (ret) { | |
3235dc3f | 63 | printk(KERN_WARNING "sysfs_create_file partition_id failed\n"); |
fc8c2d76 RA |
64 | return ret; |
65 | } | |
66 | ||
67 | ret = sysfs_create_file(sgi_uv_kobj, &coherence_id_attr.attr); | |
68 | if (ret) { | |
3235dc3f | 69 | printk(KERN_WARNING "sysfs_create_file coherence_id failed\n"); |
fc8c2d76 RA |
70 | return ret; |
71 | } | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
76 | device_initcall(sgi_uv_sysfs_init); |