patch-2.4.22 linux-2.4.22/arch/mips/lasat/sysctl.c

• Lines: 360
• Date: 2003-08-25 04:44:40.000000000 -0700
• Orig file: linux-2.4.21/arch/mips/lasat/sysctl.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/mips/lasat/sysctl.c linux-2.4.22/arch/mips/lasat/sysctl.c
@@ -0,0 +1,359 @@
+/*
+ * sysctl.c
+ *
+ * Thomas Horsten <thh@lasat.com>
+ * Copyright (C) 2000 LASAT Networks A/S.
+ *
+ * ########################################################################
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * ########################################################################
+ *
+ * Routines specific to the LASAT boards
+ */
+#include <linux/types.h>
+#include <asm/lasat/lasat.h>
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/sysctl.h>
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/net.h>
+#include <linux/inet.h>
+#include <asm/uaccess.h>
+
+#include "sysctl.h"
+#include "ds1603.h"
+
+static DECLARE_MUTEX(lasat_info_sem);
+
+/* Strategy function to write EEPROM after changing string entry */ 
+int sysctl_lasatstring(ctl_table *table, int *name, int nlen,
+		void *oldval, size_t *oldlenp,
+		void *newval, size_t newlen, void **context)
+{
+	int r;
+	down(&lasat_info_sem);
+	r = sysctl_string(table, name, 
+			  nlen, oldval, oldlenp, newval, newlen, context);
+	if (r < 0) {
+		up(&lasat_info_sem);
+		return r;
+	}
+	if (newval && newlen) {
+		lasat_write_eeprom_info();
+	}
+	up(&lasat_info_sem);
+	return 1;
+}
+
+
+/* And the same for proc */
+int proc_dolasatstring(ctl_table *table, int write, struct file *filp,
+		       void *buffer, size_t *lenp)
+{
+	int r;
+	down(&lasat_info_sem);
+	r = proc_dostring(table, write, filp, buffer, lenp);
+	if ( (!write) || r) {
+		up(&lasat_info_sem);
+		return r;
+	}
+	lasat_write_eeprom_info();
+	up(&lasat_info_sem);
+	return 0;
+}
+
+/* proc function to write EEPROM after changing int entry */ 
+int proc_dolasatint(ctl_table *table, int write, struct file *filp,
+		       void *buffer, size_t *lenp)
+{
+	int r;
+	down(&lasat_info_sem);
+	r = proc_dointvec(table, write, filp, buffer, lenp);
+	if ( (!write) || r) {
+		up(&lasat_info_sem);
+		return r;
+	}
+	lasat_write_eeprom_info();
+	up(&lasat_info_sem);
+	return 0;
+}
+
+static int rtctmp;
+
+#ifdef CONFIG_DS1603
+/* proc function to read/write RealTime Clock */ 
+int proc_dolasatrtc(ctl_table *table, int write, struct file *filp,
+		       void *buffer, size_t *lenp)
+{
+	int r;
+	down(&lasat_info_sem);
+	if (!write) {
+		rtctmp = ds1603_read();
+		/* check for time < 0 and set to 0 */
+		if (rtctmp < 0)
+			rtctmp = 0;
+	}
+	r = proc_dointvec(table, write, filp, buffer, lenp);
+	if ( (!write) || r) {
+		up(&lasat_info_sem);
+		return r;
+	}
+	ds1603_set(rtctmp);
+	up(&lasat_info_sem);
+	return 0;
+}
+#endif
+
+/* Sysctl for setting the IP addresses */
+int sysctl_lasat_intvec(ctl_table *table, int *name, int nlen,
+		    void *oldval, size_t *oldlenp,
+		    void *newval, size_t newlen, void **context)
+{
+	int r;
+	down(&lasat_info_sem);
+	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
+	if (r < 0) {
+		up(&lasat_info_sem);
+		return r;
+	}
+	if (newval && newlen) {
+		lasat_write_eeprom_info();
+	}
+	up(&lasat_info_sem);
+	return 1;
+}
+
+#if CONFIG_DS1603
+/* Same for RTC */
+int sysctl_lasat_rtc(ctl_table *table, int *name, int nlen,
+		    void *oldval, size_t *oldlenp,
+		    void *newval, size_t newlen, void **context)
+{
+	int r;
+	down(&lasat_info_sem);
+	rtctmp = ds1603_read();
+	if (rtctmp < 0)
+		rtctmp = 0;
+	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
+	if (r < 0) {
+		up(&lasat_info_sem);
+		return r;
+	}
+	if (newval && newlen) {
+		ds1603_set(rtctmp);
+	}
+	up(&lasat_info_sem);
+	return 1;
+}
+#endif
+
+#ifdef CONFIG_INET
+static char lasat_bcastaddr[16];
+
+void update_bcastaddr(void)
+{
+	unsigned int ip;
+	
+	ip = lasat_board_info.li_eeprom_info.ipaddr |
+		~lasat_board_info.li_eeprom_info.netmask;
+
+	sprintf(lasat_bcastaddr, "%d.%d.%d.%d",
+			(ip      ) & 0xff,
+			(ip >>  8) & 0xff,
+			(ip >> 16) & 0xff,
+			(ip >> 24) & 0xff);
+}
+
+static char proc_lasat_ipbuf[32];
+/* Parsing of IP address */
+int proc_lasat_ip(ctl_table *table, int write, struct file *filp,
+		       void *buffer, size_t *lenp)
+{
+	int len;
+        unsigned int ip;
+	char *p, c;
+
+	if (!table->data || !table->maxlen || !*lenp ||
+	    (filp->f_pos && !write)) {
+		*lenp = 0;
+		return 0;
+	}
+
+	down(&lasat_info_sem);
+	if (write) {
+		len = 0;
+		p = buffer;
+		while (len < *lenp) {
+			if(get_user(c, p++)) {
+				up(&lasat_info_sem);
+				return -EFAULT;
+			}
+			if (c == 0 || c == '\n')
+				break;
+			len++;
+		}
+		if (len >= sizeof(proc_lasat_ipbuf)-1) 
+			len = sizeof(proc_lasat_ipbuf) - 1;
+		if (copy_from_user(proc_lasat_ipbuf, buffer, len))
+		{
+			up(&lasat_info_sem);
+			return -EFAULT;
+		}
+		proc_lasat_ipbuf[len] = 0;
+		filp->f_pos += *lenp;
+		/* Now see if we can convert it to a valid IP */
+		ip = in_aton(proc_lasat_ipbuf);
+		*(unsigned int *)(table->data) = ip;
+		lasat_write_eeprom_info();
+	} else {
+		ip = *(unsigned int *)(table->data);
+		sprintf(proc_lasat_ipbuf, "%d.%d.%d.%d",
+			(ip      ) & 0xff,
+			(ip >>  8) & 0xff,
+			(ip >> 16) & 0xff,
+			(ip >> 24) & 0xff);
+		len = strlen(proc_lasat_ipbuf);
+		if (len > *lenp)
+			len = *lenp;
+		if (len)
+			if(copy_to_user(buffer, proc_lasat_ipbuf, len)) {
+				up(&lasat_info_sem);
+				return -EFAULT;
+			}
+		if (len < *lenp) {
+			if(put_user('\n', ((char *) buffer) + len)) {
+				up(&lasat_info_sem);
+				return -EFAULT;
+			}
+			len++;
+		}
+		*lenp = len;
+		filp->f_pos += len;
+	}
+	update_bcastaddr();
+	up(&lasat_info_sem);
+	return 0;
+}
+#endif /* defined(CONFIG_INET) */
+
+static int sysctl_lasat_eeprom_value(ctl_table *table, int *name, int nlen, 
+				     void *oldval, size_t *oldlenp, 
+				     void *newval, size_t newlen,
+				     void **context)
+{
+	int r;
+
+	down(&lasat_info_sem);
+	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
+	if (r < 0) {
+		up(&lasat_info_sem);
+		return r;
+	}
+
+	if (newval && newlen)
+	{
+		if (name && *name == LASAT_PRID)
+			lasat_board_info.li_eeprom_info.prid = *(int*)newval;
+
+		lasat_write_eeprom_info();
+		lasat_init_board_info();
+	}
+	up(&lasat_info_sem);
+
+	return 0;
+}
+
+int proc_lasat_eeprom_value(ctl_table *table, int write, struct file *filp,
+		       void *buffer, size_t *lenp)
+{
+	int r;
+	down(&lasat_info_sem);
+	r = proc_dointvec(table, write, filp, buffer, lenp);
+	if ( (!write) || r) {
+		up(&lasat_info_sem);
+		return r;
+	}
+	if (filp && filp->f_dentry)
+	{
+		if (!strcmp(filp->f_dentry->d_name.name, "prid"))
+			lasat_board_info.li_eeprom_info.prid = lasat_board_info.li_prid;
+		if (!strcmp(filp->f_dentry->d_name.name, "debugaccess"))
+			lasat_board_info.li_eeprom_info.debugaccess = lasat_board_info.li_debugaccess;
+	}
+	lasat_write_eeprom_info();	
+	up(&lasat_info_sem);
+	return 0;
+}
+
+extern int lasat_boot_to_service;
+
+#ifdef CONFIG_SYSCTL
+
+static ctl_table lasat_table[] = {
+	{LASAT_CPU_HZ, "cpu-hz", &lasat_board_info.li_cpu_hz, sizeof(int),
+	 0444, NULL, &proc_dointvec, &sysctl_intvec},
+	{LASAT_BUS_HZ, "bus-hz", &lasat_board_info.li_bus_hz, sizeof(int),
+	 0444, NULL, &proc_dointvec, &sysctl_intvec},
+	{LASAT_MODEL, "bmid", &lasat_board_info.li_bmid, sizeof(int),
+	 0444, NULL, &proc_dointvec, &sysctl_intvec},
+	{LASAT_PRID, "prid", &lasat_board_info.li_prid, sizeof(int),
+	 0644, NULL, &proc_lasat_eeprom_value, &sysctl_lasat_eeprom_value},
+#ifdef CONFIG_INET
+	{LASAT_IPADDR, "ipaddr", &lasat_board_info.li_eeprom_info.ipaddr, sizeof(int),
+	 0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec},
+	{LASAT_NETMASK, "netmask", &lasat_board_info.li_eeprom_info.netmask, sizeof(int),
+	 0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec},
+	{LASAT_BCAST, "bcastaddr", &lasat_bcastaddr, 
+		sizeof(lasat_bcastaddr), 0600, NULL, 
+		&proc_dostring, &sysctl_string},
+#endif
+	{LASAT_PASSWORD, "passwd_hash", &lasat_board_info.li_eeprom_info.passwd_hash, sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
+	 0600, NULL, &proc_dolasatstring, &sysctl_lasatstring},
+	{LASAT_SBOOT, "boot-service", &lasat_boot_to_service, sizeof(int),
+	 0644, NULL, &proc_dointvec, &sysctl_intvec},
+#if CONFIG_DS1603
+	{LASAT_RTC, "rtc", &rtctmp, sizeof(int),
+	 0644, NULL, &proc_dolasatrtc, &sysctl_lasat_rtc},
+#endif
+	{LASAT_NAMESTR, "namestr", &lasat_board_info.li_namestr, sizeof(lasat_board_info.li_namestr),
+	 0444, NULL, &proc_dostring, &sysctl_string},
+	{LASAT_TYPESTR, "typestr", &lasat_board_info.li_typestr, sizeof(lasat_board_info.li_typestr),
+	 0444, NULL, &proc_dostring, &sysctl_string},
+	{0}
+};
+
+#define CTL_LASAT 1	// CTL_ANY ???
+static ctl_table lasat_root_table[] = {
+	{ CTL_LASAT, "lasat", NULL, 0, 0555, lasat_table },
+	{ 0 }
+};
+
+static int __init lasat_register_sysctl(void)
+{
+	struct ctl_table_header *lasat_table_header;
+
+	lasat_table_header =
+		register_sysctl_table(lasat_root_table, 0);
+
+	return 0;
+}
+
+__initcall(lasat_register_sysctl);
+#endif /* CONFIG_SYSCTL */