[MIPS] Add back support for LASAT platforms

Signed-off-by: Brian Murphy <brian@murphy.dk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 454 insertions, 0 deletions

diff --git a/arch/mips/lasat/sysctl.c b/arch/mips/lasat/sysctl.c
new file mode 100644
index 000000000000..4575a829766d
--- /dev/null
+++ b/arch/mips/lasat/sysctl.c
@@ -0,0 +1,454 @@
+/*
+ * 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/module.h>
+#include <linux/sysctl.h>
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/net.h>
+#include <linux/inet.h>
+#include <linux/mutex.h>
+#include <linux/uaccess.h>
+
+#include "sysctl.h"
+#include "ds1603.h"
+
+static DEFINE_MUTEX(lasat_info_mutex);
+
+/* 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)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        r = sysctl_string(table, name,
+                          nlen, oldval, oldlenp, newval, newlen);
+        if (r < 0) {
+                mutex_unlock(&lasat_info_mutex);
+                return r;
+        }
+        if (newval && newlen)
+                lasat_write_eeprom_info();
+        mutex_unlock(&lasat_info_mutex);
+
+        return 1;
+}
+
+
+/* And the same for proc */
+int proc_dolasatstring(ctl_table *table, int write, struct file *filp,
+                       void *buffer, size_t *lenp, loff_t *ppos)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        r = proc_dostring(table, write, filp, buffer, lenp, ppos);
+        if ((!write) || r) {
+                mutex_unlock(&lasat_info_mutex);
+                return r;
+        }
+        lasat_write_eeprom_info();
+        mutex_unlock(&lasat_info_mutex);
+
+        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, loff_t *ppos)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
+        if ((!write) || r) {
+                mutex_unlock(&lasat_info_mutex);
+                return r;
+        }
+        lasat_write_eeprom_info();
+        mutex_unlock(&lasat_info_mutex);
+
+        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, loff_t *ppos)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        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, ppos);
+        if ((!write) || r) {
+                mutex_unlock(&lasat_info_mutex);
+                return r;
+        }
+        ds1603_set(rtctmp);
+        mutex_unlock(&lasat_info_mutex);
+
+        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)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
+        if (r < 0) {
+                mutex_unlock(&lasat_info_mutex);
+                return r;
+        }
+        if (newval && newlen)
+                lasat_write_eeprom_info();
+        mutex_unlock(&lasat_info_mutex);
+
+        return 1;
+}
+
+#ifdef 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)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        rtctmp = ds1603_read();
+        if (rtctmp < 0)
+                rtctmp = 0;
+        r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
+        if (r < 0) {
+                mutex_unlock(&lasat_info_mutex);
+                return r;
+        }
+        if (newval && newlen)
+                ds1603_set(rtctmp);
+        mutex_unlock(&lasat_info_mutex);
+
+        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) |
+                ~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, loff_t *ppos)
+{
+        unsigned int ip;
+        char *p, c;
+        int len;
+
+        if (!table->data || !table->maxlen || !*lenp ||
+            (*ppos && !write)) {
+                *lenp = 0;
+                return 0;
+        }
+
+        mutex_lock(&lasat_info_mutex);
+        if (write) {
+                len = 0;
+                p = buffer;
+                while (len < *lenp) {
+                        if (get_user(c, p++)) {
+                                mutex_unlock(&lasat_info_mutex);
+                                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)) {
+                        mutex_unlock(&lasat_info_mutex);
+                        return -EFAULT;
+                }
+                proc_lasat_ipbuf[len] = 0;
+                *ppos += *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)) {
+                                mutex_unlock(&lasat_info_mutex);
+                                return -EFAULT;
+                        }
+                if (len < *lenp) {
+                        if (put_user('\n', ((char *) buffer) + len)) {
+                                mutex_unlock(&lasat_info_mutex);
+                                return -EFAULT;
+                        }
+                        len++;
+                }
+                *lenp = len;
+                *ppos += len;
+        }
+        update_bcastaddr();
+        mutex_unlock(&lasat_info_mutex);
+
+        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)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
+        if (r < 0) {
+                mutex_unlock(&lasat_info_mutex);
+                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();
+        }
+        mutex_unlock(&lasat_info_mutex);
+
+        return 0;
+}
+
+int proc_lasat_eeprom_value(ctl_table *table, int write, struct file *filp,
+                       void *buffer, size_t *lenp, loff_t *ppos)
+{
+        int r;
+
+        mutex_lock(&lasat_info_mutex);
+        r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
+        if ((!write) || r) {
+                mutex_unlock(&lasat_info_mutex);
+                return r;
+        }
+        if (filp && filp->f_path.dentry) {
+                if (!strcmp(filp->f_path.dentry->d_name.name, "prid"))
+                        lasat_board_info.li_eeprom_info.prid =
+                                lasat_board_info.li_prid;
+                if (!strcmp(filp->f_path.dentry->d_name.name, "debugaccess"))
+                        lasat_board_info.li_eeprom_info.debugaccess =
+                                lasat_board_info.li_debugaccess;
+        }
+        lasat_write_eeprom_info();
+        mutex_unlock(&lasat_info_mutex);
+
+        return 0;
+}
+
+extern int lasat_boot_to_service;
+
+#ifdef CONFIG_SYSCTL
+
+static ctl_table lasat_table[] = {
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "cpu-hz",
+                .data           = &lasat_board_info.li_cpu_hz,
+                .maxlen         = sizeof(int),
+                .mode           = 0444,
+                .proc_handler   = &proc_dointvec,
+                .strategy       = &sysctl_intvec
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "bus-hz",
+                .data           = &lasat_board_info.li_bus_hz,
+                .maxlen         = sizeof(int),
+                .mode           = 0444,
+                .proc_handler   = &proc_dointvec,
+                .strategy       = &sysctl_intvec
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "bmid",
+                .data           = &lasat_board_info.li_bmid,
+                .maxlen         = sizeof(int),
+                .mode           = 0444,
+                .proc_handler   = &proc_dointvec,
+                .strategy       = &sysctl_intvec
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "prid",
+                .data           = &lasat_board_info.li_prid,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_lasat_eeprom_value,
+                .strategy       = &sysctl_lasat_eeprom_value
+        },
+#ifdef CONFIG_INET
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "ipaddr",
+                .data           = &lasat_board_info.li_eeprom_info.ipaddr,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_lasat_ip,
+                .strategy       = &sysctl_lasat_intvec
+        },
+        {
+                .ctl_name       = LASAT_NETMASK,
+                .procname       = "netmask",
+                .data           = &lasat_board_info.li_eeprom_info.netmask,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_lasat_ip,
+                .strategy       = &sysctl_lasat_intvec
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "bcastaddr",
+                .data           = &lasat_bcastaddr,
+                .maxlen         = sizeof(lasat_bcastaddr),
+                .mode           = 0600,
+                .proc_handler   = &proc_dostring,
+                .strategy       = &sysctl_string
+        },
+#endif
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "passwd_hash",
+                .data           = &lasat_board_info.li_eeprom_info.passwd_hash,
+                .maxlen         =
+                        sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
+                .mode           = 0600,
+                .proc_handler   = &proc_dolasatstring,
+                .strategy       = &sysctl_lasatstring
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "boot-service",
+                .data           = &lasat_boot_to_service,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec,
+                .strategy       = &sysctl_intvec
+        },
+#ifdef CONFIG_DS1603
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "rtc",
+                .data           = &rtctmp,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dolasatrtc,
+                .strategy       = &sysctl_lasat_rtc
+        },
+#endif
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "namestr",
+                .data           = &lasat_board_info.li_namestr,
+                .maxlen         = sizeof(lasat_board_info.li_namestr),
+                .mode           = 0444,
+                .proc_handler   =  &proc_dostring,
+                .strategy       = &sysctl_string
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "typestr",
+                .data           = &lasat_board_info.li_typestr,
+                .maxlen         = sizeof(lasat_board_info.li_typestr),
+                .mode           = 0444,
+                .proc_handler   = &proc_dostring,
+                .strategy       = &sysctl_string
+        },
+        {}
+};
+
+static ctl_table lasat_root_table[] = {
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "lasat",
+                .mode           =  0555,
+                .child          = lasat_table
+        },
+        {}
+};
+
+static int __init lasat_register_sysctl(void)
+{
+        struct ctl_table_header *lasat_table_header;
+
+        lasat_table_header =
+                register_sysctl_table(lasat_root_table);
+
+        return 0;
+}
+
+__initcall(lasat_register_sysctl);
+#endif /* CONFIG_SYSCTL */