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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ia64/sn/kernel/sn2/sn_proc_fs.c
downloadconfigs-2.6.12-rc2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ia64/sn/kernel/sn2/sn_proc_fs.c')
-rw-r--r--arch/ia64/sn/kernel/sn2/sn_proc_fs.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
new file mode 100644
index 00000000000..6a80fca807b
--- /dev/null
+++ b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
@@ -0,0 +1,149 @@
+/*
+ * 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) 2000-2004 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_local_partid());
+ 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 */