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