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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/config.h>
#include <asm/uaccess.h>
#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <asm/sn/sn_sal.h>
static int partition_id_show(struct seq_file *s, void *p)
{
seq_printf(s, "%d\n", sn_partition_id);
return 0;
}
static int partition_id_open(struct inode *inode, struct file *file)
{
return single_open(file, partition_id_show, NULL);
}
static int system_serial_number_show(struct seq_file *s, void *p)
{
seq_printf(s, "%s\n", sn_system_serial_number());
return 0;
}
static int system_serial_number_open(struct inode *inode, struct file *file)
{
return single_open(file, system_serial_number_show, NULL);
}
static int licenseID_show(struct seq_file *s, void *p)
{
seq_printf(s, "0x%lx\n", sn_partition_serial_number_val());
return 0;
}
static int licenseID_open(struct inode *inode, struct file *file)
{
return single_open(file, licenseID_show, NULL);
}
/*
* Enable forced interrupt by default.
* When set, the sn interrupt handler writes the force interrupt register on
* the bridge chip. The hardware will then send an interrupt message if the
* interrupt line is active. This mimics a level sensitive interrupt.
*/
int sn_force_interrupt_flag = 1;
static int sn_force_interrupt_show(struct seq_file *s, void *p)
{
seq_printf(s, "Force interrupt is %s\n",
sn_force_interrupt_flag ? "enabled" : "disabled");
return 0;
}
static ssize_t sn_force_interrupt_write_proc(struct file *file,
const char __user *buffer, size_t count, loff_t *data)
{
char val;
if (copy_from_user(&val, buffer, 1))
return -EFAULT;
sn_force_interrupt_flag = (val == '0') ? 0 : 1;
return count;
}
static int sn_force_interrupt_open(struct inode *inode, struct file *file)
{
return single_open(file, sn_force_interrupt_show, NULL);
}
static int coherence_id_show(struct seq_file *s, void *p)
{
seq_printf(s, "%d\n", partition_coherence_id());
return 0;
}
static int coherence_id_open(struct inode *inode, struct file *file)
{
return single_open(file, coherence_id_show, NULL);
}
static struct proc_dir_entry *sn_procfs_create_entry(
const char *name, struct proc_dir_entry *parent,
int (*openfunc)(struct inode *, struct file *),
int (*releasefunc)(struct inode *, struct file *))
{
struct proc_dir_entry *e = create_proc_entry(name, 0444, parent);
if (e) {
e->proc_fops = (struct file_operations *)kmalloc(
sizeof(struct file_operations), GFP_KERNEL);
if (e->proc_fops) {
memset(e->proc_fops, 0, sizeof(struct file_operations));
e->proc_fops->open = openfunc;
e->proc_fops->read = seq_read;
e->proc_fops->llseek = seq_lseek;
e->proc_fops->release = releasefunc;
}
}
return e;
}
/* /proc/sgi_sn/sn_topology uses seq_file, see sn_hwperf.c */
extern int sn_topology_open(struct inode *, struct file *);
extern int sn_topology_release(struct inode *, struct file *);
void register_sn_procfs(void)
{
static struct proc_dir_entry *sgi_proc_dir = NULL;
struct proc_dir_entry *e;
BUG_ON(sgi_proc_dir != NULL);
if (!(sgi_proc_dir = proc_mkdir("sgi_sn", NULL)))
return;
sn_procfs_create_entry("partition_id", sgi_proc_dir,
partition_id_open, single_release);
sn_procfs_create_entry("system_serial_number", sgi_proc_dir,
system_serial_number_open, single_release);
sn_procfs_create_entry("licenseID", sgi_proc_dir,
licenseID_open, single_release);
e = sn_procfs_create_entry("sn_force_interrupt", sgi_proc_dir,
sn_force_interrupt_open, single_release);
if (e)
e->proc_fops->write = sn_force_interrupt_write_proc;
sn_procfs_create_entry("coherence_id", sgi_proc_dir,
coherence_id_open, single_release);
sn_procfs_create_entry("sn_topology", sgi_proc_dir,
sn_topology_open, sn_topology_release);
}
#endif /* CONFIG_PROC_FS */
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