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 22#include <linux/device.h> 23#include <asm/uv/bios.h> 24#include <asm/uv/uv.h> 25 26struct kobject *sgi_uv_kobj; 27 28static 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 34static ssize_t coherence_id_show(struct kobject *kobj, 35 struct kobj_attribute *attr, char *buf) 36{ 37 return snprintf(buf, PAGE_SIZE, "%ld\n", partition_coherence_id()); 38} 39 40static struct kobj_attribute partition_id_attr = 41 __ATTR(partition_id, S_IRUGO, partition_id_show, NULL); 42 43static struct kobj_attribute coherence_id_attr = 44 __ATTR(coherence_id, S_IRUGO, coherence_id_show, NULL); 45 46 47static int __init sgi_uv_sysfs_init(void) 48{ 49 unsigned long ret; 50 51 if (!is_uv_system()) 52 return -ENODEV; 53 54 if (!sgi_uv_kobj) 55 sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj); 56 if (!sgi_uv_kobj) { 57 printk(KERN_WARNING "kobject_create_and_add sgi_uv failed\n"); 58 return -EINVAL; 59 } 60 61 ret = sysfs_create_file(sgi_uv_kobj, &partition_id_attr.attr); 62 if (ret) { 63 printk(KERN_WARNING "sysfs_create_file partition_id failed\n"); 64 return ret; 65 } 66 67 ret = sysfs_create_file(sgi_uv_kobj, &coherence_id_attr.attr); 68 if (ret) { 69 printk(KERN_WARNING "sysfs_create_file coherence_id failed\n"); 70 return ret; 71 } 72 73 return 0; 74} 75 76device_initcall(sgi_uv_sysfs_init); 77