2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved.
10 #include <linux/proc_fs.h>
11 #include <linux/seq_file.h>
12 #include <asm/uaccess.h>
13 #include <asm/sn/sn_sal.h>
15 static int partition_id_show(struct seq_file *s, void *p)
17 seq_printf(s, "%d\n", sn_partition_id);
21 static int partition_id_open(struct inode *inode, struct file *file)
23 return single_open(file, partition_id_show, NULL);
26 static int system_serial_number_show(struct seq_file *s, void *p)
28 seq_printf(s, "%s\n", sn_system_serial_number());
32 static int system_serial_number_open(struct inode *inode, struct file *file)
34 return single_open(file, system_serial_number_show, NULL);
37 static int licenseID_show(struct seq_file *s, void *p)
39 seq_printf(s, "0x%lx\n", sn_partition_serial_number_val());
43 static int licenseID_open(struct inode *inode, struct file *file)
45 return single_open(file, licenseID_show, NULL);
49 * Enable forced interrupt by default.
50 * When set, the sn interrupt handler writes the force interrupt register on
51 * the bridge chip. The hardware will then send an interrupt message if the
52 * interrupt line is active. This mimics a level sensitive interrupt.
54 extern int sn_force_interrupt_flag;
56 static int sn_force_interrupt_show(struct seq_file *s, void *p)
58 seq_printf(s, "Force interrupt is %s\n",
59 sn_force_interrupt_flag ? "enabled" : "disabled");
63 static ssize_t sn_force_interrupt_write_proc(struct file *file,
64 const char __user *buffer, size_t count, loff_t *data)
68 if (copy_from_user(&val, buffer, 1))
71 sn_force_interrupt_flag = (val == '0') ? 0 : 1;
75 static int sn_force_interrupt_open(struct inode *inode, struct file *file)
77 return single_open(file, sn_force_interrupt_show, NULL);
80 static int coherence_id_show(struct seq_file *s, void *p)
82 seq_printf(s, "%d\n", partition_coherence_id());
87 static int coherence_id_open(struct inode *inode, struct file *file)
89 return single_open(file, coherence_id_show, NULL);
92 /* /proc/sgi_sn/sn_topology uses seq_file, see sn_hwperf.c */
93 extern int sn_topology_open(struct inode *, struct file *);
94 extern int sn_topology_release(struct inode *, struct file *);
96 static const struct file_operations proc_partition_id_fops = {
97 .open = partition_id_open,
100 .release = single_release,
103 static const struct file_operations proc_system_sn_fops = {
104 .open = system_serial_number_open,
107 .release = single_release,
110 static const struct file_operations proc_license_id_fops = {
111 .open = licenseID_open,
114 .release = single_release,
117 static const struct file_operations proc_sn_force_intr_fops = {
118 .open = sn_force_interrupt_open,
120 .write = sn_force_interrupt_write_proc,
122 .release = single_release,
125 static const struct file_operations proc_coherence_id_fops = {
126 .open = coherence_id_open,
129 .release = single_release,
132 static const struct file_operations proc_sn_topo_fops = {
133 .open = sn_topology_open,
136 .release = sn_topology_release,
139 void register_sn_procfs(void)
141 static struct proc_dir_entry *sgi_proc_dir = NULL;
142 struct proc_dir_entry *pde;
144 BUG_ON(sgi_proc_dir != NULL);
145 if (!(sgi_proc_dir = proc_mkdir("sgi_sn", NULL)))
148 pde = create_proc_entry("partition_id", 0444, sgi_proc_dir);
150 pde->proc_fops = &proc_partition_id_fops;
151 pde = create_proc_entry("system_serial_number", 0444, sgi_proc_dir);
153 pde->proc_fops = &proc_system_sn_fops;
154 pde = create_proc_entry("licenseID", 0444, sgi_proc_dir);
156 pde->proc_fops = &proc_license_id_fops;
157 pde = create_proc_entry("sn_force_interrupt", 0644, sgi_proc_dir);
159 pde->proc_fops = &proc_sn_force_intr_fops;
160 pde = create_proc_entry("coherence_id", 0444, sgi_proc_dir);
162 pde->proc_fops = &proc_coherence_id_fops;
163 pde = create_proc_entry("sn_topology", 0444, sgi_proc_dir);
165 pde->proc_fops = &proc_sn_topo_fops;
168 #endif /* CONFIG_PROC_FS */