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- --- /dev/null
- +++ b/arch/mips/include/asm/mach-lantiq/vpe.h
- @@ -0,0 +1,44 @@
- +/*
- + * This program is free software; you can redistribute it and/or modify
- + * it under the terms of the GNU General Public License as published by
- + * the Free Software Foundation; either version 2 of the License, or
- + * (at your option) any later version.
- + *
- + * This program is distributed in the hope that 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.
- + *
- + * Copyright (C) 2005 infineon
- + * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- + *
- + */
- +#ifndef _IFXMIPS_VPE_H__
- +#define _IFXMIPS_VPE_H__
- +
- +/* For the explanation of the APIs please refer the section "MT APRP Kernel
- + * Programming" in AR9 SW Architecture Specification
- + */
- +int32_t vpe1_sw_start(void* sw_start_addr, uint32_t tcmask, uint32_t flags);
- +int32_t vpe1_sw_stop(uint32_t flags);
- +uint32_t vpe1_get_load_addr (uint32_t flags);
- +uint32_t vpe1_get_max_mem (uint32_t flags);
- +
- +int32_t vpe1_set_boot_param(char *field, char *value, char flags);
- +int32_t vpe1_get_boot_param(char *field, char **value, char flags);
- +
- +/* Watchdog APIs */
- +extern unsigned long vpe1_wdog_ctr;
- +extern unsigned long vpe1_wdog_timeout;
- +
- +unsigned long vpe1_sw_wdog_start(unsigned long);
- +unsigned long vpe1_sw_wdog_stop(unsigned long);
- +
- +typedef int (*VPE_SW_WDOG_RESET)(unsigned long wdog_cleared_ok_count);
- +int32_t vpe1_sw_wdog_register_reset_handler(VPE_SW_WDOG_RESET reset_fn);
- +
- +#endif
- --- /dev/null
- +++ b/arch/mips/lantiq/softdog_vpe.c
- @@ -0,0 +1,109 @@
- +/*
- +** =============================================================================
- +** FILE NAME : softdog_vpe.c
- +** MODULES : LXDB
- +** DATE : 24-03-2008
- +** AUTHOR : LXDB Team
- +** DESCRIPTION : This header file contains the code for the watchdog
- +** implentation on vpe1 side.
- +** REFERENCES :
- +** COPYRIGHT : Copyright (c) 2008
- +** Am Campeon 1-12, 85579 Neubiberg, Germany
- +** Any use of this software is subject to the conclusion of a respective
- +** License agreement. Without such a License agreement no rights to the
- +** software are granted
- +**
- +** HISTORY :
- +** $Date $Author $Comment
- +** 24-03-2008 LXDB Initial version
- +** ============================================================================
- +*/
- +
- +#include <linux/module.h>
- +#include <linux/moduleparam.h>
- +#include <linux/types.h>
- +#include <linux/timer.h>
- +#include <linux/reboot.h>
- +#include <linux/init.h>
- +#include <linux/jiffies.h>
- +
- +#include <vpe.h>
- +
- +static unsigned long last_wdog_value;
- +static unsigned long vpe1_wdog_cleared;
- +
- +static unsigned long vpe1_wdog_dead;
- +static void watchdog_vpe0_fire(unsigned long); /* Called when vpe0 timer expires */
- +static void keep_alive_vpe0(unsigned long);
- +VPE_SW_WDOG_RESET reset_local_fn;
- +
- +
- +static struct timer_list watchdog_vpe0_ticktock =
- + TIMER_INITIALIZER(watchdog_vpe0_fire, 0, 0);
- +
- +static void watchdog_vpe0_fire (unsigned long flags)
- +{
- + volatile unsigned long *wdog_ctr_value;
- + wdog_ctr_value = (void*)vpe1_wdog_ctr;
- + if (*wdog_ctr_value == last_wdog_value) { /* VPE1 watchdog expiry handling */
- + vpe1_sw_wdog_stop(flags);
- + vpe1_wdog_dead++;
- + printk(KERN_DEBUG "VPE1 watchdog reset handler called\n");
- + /* Call the reset handler function */
- + reset_local_fn(flags);
- + } else { /* Everything is OK on vpe1 side. Continue. */
- + last_wdog_value = *wdog_ctr_value;
- + vpe1_wdog_cleared++;
- + keep_alive_vpe0(flags);
- + }
- +}
- +
- +int32_t vpe1_sw_wdog_register_reset_handler (VPE_SW_WDOG_RESET reset_fn)
- +{
- + reset_local_fn = (VPE_SW_WDOG_RESET)reset_fn;
- + return 0;
- +}
- +
- +static void keep_alive_vpe0(unsigned long flags)
- +{
- + mod_timer(&watchdog_vpe0_ticktock, jiffies+ vpe1_wdog_timeout );
- +}
- +
- +unsigned long vpe1_sw_wdog_start(unsigned long flags)
- +{
- + volatile unsigned long *wdog_ctr_value;
- + wdog_ctr_value = (void*)vpe1_wdog_ctr;
- + *wdog_ctr_value = 0;
- + last_wdog_value = 0;
- + keep_alive_vpe0(flags);
- + return 0;
- +}
- +
- +unsigned long vpe1_sw_wdog_stop(unsigned long flags)
- +{
- + del_timer(&watchdog_vpe0_ticktock);
- + return 0;
- +}
- +
- +static int __init watchdog_vpe1_init(void)
- +{
- + /* Nothing to be done here */
- + return 0;
- +}
- +
- +static void __exit watchdog_vpe1_exit(void)
- +{
- + unsigned long flags=0;
- + vpe1_sw_wdog_stop(flags);
- +}
- +
- +module_init(watchdog_vpe1_init);
- +module_exit(watchdog_vpe1_exit);
- +
- +EXPORT_SYMBOL(vpe1_sw_wdog_register_reset_handler);
- +EXPORT_SYMBOL(vpe1_sw_wdog_start);
- +EXPORT_SYMBOL(vpe1_sw_wdog_stop);
- +
- +MODULE_AUTHOR("LXDB");
- +MODULE_DESCRIPTION("Software Watchdog For VPE1");
- +MODULE_LICENSE("GPL");
- --- a/arch/mips/lantiq/Makefile
- +++ b/arch/mips/lantiq/Makefile
- @@ -6,6 +6,8 @@
-
- obj-y := irq.o clk.o prom.o
-
- +obj-$(CONFIG_MIPS_VPE_LOADER) += softdog_vpe.o
- +
- obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-
- obj-$(CONFIG_SOC_TYPE_XWAY) += xway/
|
