diff options
3 files changed, 256 insertions, 261 deletions
diff --git a/target/linux/amazon-2.6/files/drivers/char/amazon_wdt.c b/target/linux/amazon-2.6/files/drivers/char/amazon_wdt.c deleted file mode 100644 index c6a90f07b..000000000 --- a/target/linux/amazon-2.6/files/drivers/char/amazon_wdt.c +++ /dev/null @@ -1,261 +0,0 @@ -/* - * Infineon AP DC COM Amazon WDT driver - * Copyright 2004 Wu Qi Ming <gokimi@msn.com> - * All rights reserved - */ -#if defined(MODVERSIONS) -#include <linux/modversions.h> -#endif - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/timer.h> -#include <linux/fs.h> -#include <linux/errno.h> -#include <linux/proc_fs.h> -#include <linux/stat.h> -#include <linux/tty.h> -#include <linux/selection.h> -#include <linux/kmod.h> -#include <linux/vmalloc.h> -#include <linux/kdev_t.h> -#include <linux/ioctl.h> -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/amazon/amazon.h> -#include <asm/amazon/amazon_wdt.h> - -#define AMAZON_WDT_EMSG(fmt, args...) printk( "%s: " fmt, __FUNCTION__ , ##args) - -extern unsigned int amazon_get_fpi_hz(void); - -/* forward declarations for _fops */ -static ssize_t wdt_read(struct file *file, char *buf, size_t count, loff_t *offset); -static ssize_t wdt_write(struct file *file, const char *buf, size_t count, loff_t *offset); -static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); -static int wdt_open(struct inode *inode, struct file *file); -static int wdt_release(struct inode *inode, struct file *file); -static int wdt_proc_read(char *buf, char **start, off_t offset,int count, int *eof, void *data); - - -static struct file_operations wdt_fops = { - read:wdt_read, - write:wdt_write, - ioctl:wdt_ioctl, - open:wdt_open, - release:wdt_release, -}; - -/* data */ -static struct wdt_dev *amazon_wdt_dev; -static struct proc_dir_entry* amazon_wdt_dir; -static int occupied=0; - - -/* Brief: enable WDT - * Parameter: - timeout: time interval for WDT - * Return: - 0 OK - EINVAL - * Describes: - 1. Password Access - 2. Modify Access (change ENDINIT => 0) - 3. Change WDT_CON1 (enable WDT) - 4. Password Access again - 5. Modify Access (change ENDINIT => 1) - */ -int wdt_enable(int timeout) -{ - u32 hard_psw,ffpi; - int reload_value, divider=0; - - ffpi = amazon_get_fpi_hz(); - - divider = 1; - if((reload_value=65536-timeout*ffpi/256)<0){ - divider = 0; - reload_value=65536-timeout*ffpi/16384; - } - if (reload_value < 0){ - AMAZON_WDT_EMSG("timeout too large %d\n", timeout); - return -EINVAL; - } - - AMAZON_WDT_EMSG("timeout:%d reload_value: %8x\n", timeout, reload_value); - - hard_psw=(AMAZON_WDT_REG32(AMAZON_WDT_CON0)&0xffffff01)+(AMAZON_WDT_REG32(AMAZON_WDT_CON1)&0xc)+ 0xf0; - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=hard_psw; - wmb(); - - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=(hard_psw&0xff00)+(reload_value<<16)+0xf2; - wmb(); - - AMAZON_WDT_REG32(AMAZON_WDT_CON1)=divider<<2; - wmb(); - - hard_psw=(AMAZON_WDT_REG32(AMAZON_WDT_CON0)&0xffffff01)+(AMAZON_WDT_REG32(AMAZON_WDT_CON1)&0xc)+ 0xf0; - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=hard_psw; - - wmb(); - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=(AMAZON_WDT_REG32(AMAZON_WDT_CON0)&0xffffff00)+0xf3; - wmb(); - return 0; -} - -/* Brief: Disable/stop WDT - */ -void wdt_disable(void) -{ - u32 hard_psw=0; - - hard_psw=(AMAZON_WDT_REG32(AMAZON_WDT_CON0)&0xffffff01)+(AMAZON_WDT_REG32(AMAZON_WDT_CON1)&0xc)+ 0xf0; - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=hard_psw; - wmb(); - - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=(AMAZON_WDT_REG32(AMAZON_WDT_CON0)&0xffffff00)+0xf2; - wmb(); - - AMAZON_WDT_REG32(AMAZON_WDT_CON1)|=8; - wmb(); - - hard_psw=(AMAZON_WDT_REG32(AMAZON_WDT_CON0)&0xffffff01)+(AMAZON_WDT_REG32(AMAZON_WDT_CON1)&0xc)+ 0xf0; - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=hard_psw; - wmb(); - - AMAZON_WDT_REG32(AMAZON_WDT_CON0)=(AMAZON_WDT_REG32(AMAZON_WDT_CON0)&0xffffff00)+0xf3; - wmb(); - - return; -} - -static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) -{ - int result=0; - static int timeout=-1; - - switch(cmd){ - case AMAZON_WDT_IOC_START: - AMAZON_WDT_DMSG("enable watch dog timer!\n"); - if ( copy_from_user((void*)&timeout, (void*)arg, sizeof (int)) ){ - AMAZON_WDT_EMSG("invalid argument\n"); - result=-EINVAL; - }else{ - if ((result = wdt_enable(timeout)) < 0){ - timeout = -1; - } - } - break; - case AMAZON_WDT_IOC_STOP: - AMAZON_WDT_DMSG("disable watch dog timer\n"); - timeout = -1; - wdt_disable(); - - break; - case AMAZON_WDT_IOC_PING: - if (timeout <0 ){ - result = -EIO; - }else{ - result = wdt_enable(timeout); - } - } - return result; -} - -static ssize_t wdt_read(struct file *file, char *buf, size_t count, loff_t *offset) -{ - return 0; -} - -static ssize_t wdt_write(struct file *file, const char *buf, size_t count, loff_t *offset) -{ - return count; -} - -static int wdt_open(struct inode *inode, struct file *file) -{ - AMAZON_WDT_DMSG("wdt_open\n"); - - if (occupied == 1) return -EBUSY; - occupied = 1; - - return 0; -} - -static int wdt_release(struct inode *inode, struct file *file) -{ - AMAZON_WDT_DMSG("wdt_release\n"); - - occupied = 0; - return 0; -} - - -int wdt_register_proc_read(char *buf, char **start, off_t offset, - int count, int *eof, void *data) -{ - int len=0; - printk("wdt_registers:\n"); - len+=sprintf(buf+len,"NMISR: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_NMISR)); - len+=sprintf(buf+len,"RST_REQ: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_RST_REQ)); - len+=sprintf(buf+len,"RST_SR: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_RST_SR)); - len+=sprintf(buf+len,"WDT_CON0: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_CON0)); - len+=sprintf(buf+len,"WDT_CON1: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_CON1)); - len+=sprintf(buf+len,"WDT_SR: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_SR)); - *eof = 1; - return len; -} - - -int __init amazon_wdt_init_module(void) -{ - int result=0; - - amazon_wdt_dev = (wdt_dev*)kmalloc(sizeof(wdt_dev),GFP_KERNEL); - if (amazon_wdt_dev == NULL){ - return -ENOMEM; - } - memset(amazon_wdt_dev,0,sizeof(wdt_dev)); - - amazon_wdt_dev->major=result; - strcpy(amazon_wdt_dev->name,"wdt"); - - result = register_chrdev(0,amazon_wdt_dev->name,&wdt_fops); - if (result < 0) { - AMAZON_WDT_EMSG("cannot register device\n"); - kfree(amazon_wdt_dev); - return result; - } - - amazon_wdt_dir=proc_mkdir("amazon_wdt",NULL); - create_proc_read_entry("wdt_register", - 0, - amazon_wdt_dir, - wdt_register_proc_read, - NULL); - - occupied=0; - return 0; -} - -void amazon_wdt_cleanup_module(void) -{ - unregister_chrdev(amazon_wdt_dev->major,amazon_wdt_dev->name); - kfree(amazon_wdt_dev); - remove_proc_entry("wdt_register",amazon_wdt_dir); - remove_proc_entry("amazon_wdt",NULL); - AMAZON_WDT_DMSG("unloaded\n"); - return; -} - -MODULE_LICENSE ("GPL"); -MODULE_AUTHOR("Infineon IFAP DC COM"); -MODULE_DESCRIPTION("AMAZON WDT driver"); - -module_init(amazon_wdt_init_module); -module_exit(amazon_wdt_cleanup_module); - diff --git a/target/linux/amazon-2.6/files/drivers/char/watchdog/amazon_wdt.c b/target/linux/amazon-2.6/files/drivers/char/watchdog/amazon_wdt.c new file mode 100644 index 000000000..3c58d2fea --- /dev/null +++ b/target/linux/amazon-2.6/files/drivers/char/watchdog/amazon_wdt.c @@ -0,0 +1,246 @@ +/* + * 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 2004 Wu Qi Ming <gokimi@msn.com> + * Copyright (C) 2007 John Crispin <blogic@openwrt.org> + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/fs.h> +#include <linux/errno.h> +#include <linux/proc_fs.h> +#include <linux/stat.h> +#include <linux/tty.h> +#include <linux/selection.h> +#include <linux/kmod.h> +#include <linux/vmalloc.h> +#include <linux/kdev_t.h> +#include <linux/ioctl.h> +#include <asm/uaccess.h> +#include <asm/system.h> +#include <asm/amazon/amazon.h> +#include <asm/amazon/amazon_wdt.h> + +#define DRV_NAME "AMAZON WDT:" + +#undef AMAZON_WDT_DEBUG + +extern unsigned int amazon_get_fpi_hz(void); +static int amazon_wdt_isopen = 0; + +#ifdef AMAZON_WDT_DEBUG +static struct proc_dir_entry* amazon_wdt_dir; +#endif + +int wdt_enable(int timeout) +{ + u32 hard_psw, ffpi; + int reload_value, divider = 1; + + ffpi = amazon_get_fpi_hz(); + + reload_value = 65536 - timeout * ffpi / 256; + + if (reload_value < 0) { + divider = 0; + reload_value = 65536 - timeout * ffpi / 16384; + } + + if (reload_value < 0){ + printk(KERN_INFO DRV_NAME "timeout too large %d\n", timeout); + return -EINVAL; + } + + printk(KERN_INFO DRV_NAME "timeout:%d reload_value: %8x\n", timeout, reload_value); + + hard_psw = (amazon_readl(AMAZON_WDT_CON0) & 0xffffff01) + + (amazon_readl(AMAZON_WDT_CON1) & 0xc) + 0xf0; + amazon_writel(hard_psw, AMAZON_WDT_CON0); + wmb(); + + amazon_writel((hard_psw & 0xff00) + (reload_value << 16) + 0xf2, AMAZON_WDT_CON0); + wmb(); + + amazon_writel(divider << 2, AMAZON_WDT_CON1); + wmb(); + + hard_psw = (amazon_readl(AMAZON_WDT_CON0) & 0xffffff01) + + (amazon_readl(AMAZON_WDT_CON1) & 0xc) + 0xf0; + amazon_writel(hard_psw, AMAZON_WDT_CON0); + wmb(); + + amazon_writel_masked(AMAZON_WDT_CON0, 0xff, 0xf3); + wmb(); + return 0; +} + +void wdt_disable(void) +{ + u32 hard_psw = 0; + + hard_psw = (amazon_readl(AMAZON_WDT_CON0) & 0xffffff01) + + (amazon_readl(AMAZON_WDT_CON1) & 0xc) + 0xf0; + amazon_writel(hard_psw, AMAZON_WDT_CON0); + wmb(); + + amazon_writel_masked(AMAZON_WDT_CON0, 0xff, 0xf2); + wmb(); + + amazon_writel_masked(AMAZON_WDT_CON1, 0x8, 0x8); + wmb(); + + hard_psw=(amazon_readl(AMAZON_WDT_CON0) & 0xffffff01) + + (amazon_readl(AMAZON_WDT_CON1) & 0xc) + 0xf0; + amazon_writel(hard_psw, AMAZON_WDT_CON0); + wmb(); + + amazon_writel_masked(AMAZON_WDT_CON0, 0xff, 0xf3); + wmb(); + + return; +} + +static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +{ + int result=0; + static int timeout=-1; + + switch(cmd){ + case AMAZON_WDT_IOC_START: + printk(KERN_INFO DRV_NAME "enable watch dog timer!\n"); + if (copy_from_user((void*)&timeout, (void*)arg, sizeof (int))) { + printk(KERN_INFO DRV_NAME "invalid argument\n"); + result=-EINVAL; + } else if ((result = wdt_enable(timeout)) < 0) { + timeout = -1; + } + break; + + case AMAZON_WDT_IOC_STOP: + printk(KERN_INFO DRV_NAME "disable watch dog timer\n"); + timeout = -1; + wdt_disable(); + break; + + case AMAZON_WDT_IOC_PING: + if (timeout < 0) { + result = -EIO; + } else { + result = wdt_enable(timeout); + } + break; + + default: + result=-EINVAL; + break; + } + return result; +} + +static ssize_t wdt_read(struct file *file, char *buf, size_t count, loff_t *offset) +{ + return 0; +} + +static ssize_t wdt_write(struct file *file, const char *buf, size_t count, loff_t *offset) +{ + return count; +} + +static int wdt_open(struct inode *inode, struct file *file) +{ + if (amazon_wdt_isopen == 1) + return -EBUSY; + + amazon_wdt_isopen = 1; + printk(KERN_INFO DRV_NAME "opened\n"); + return 0; +} + +static int wdt_release(struct inode *inode, struct file *file) +{ + amazon_wdt_isopen = 0; + printk(KERN_INFO DRV_NAME "closed\n"); + return 0; +} + +#ifdef AMAZON_WDT_DEBUG +int wdt_register_proc_read(char *buf, char **start, off_t offset, + int count, int *eof, void *data) +{ + int len=0; + len+=sprintf(buf+len,"NMISR: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_NMISR)); + len+=sprintf(buf+len,"RST_REQ: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_RST_REQ)); + len+=sprintf(buf+len,"RST_SR: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_RST_SR)); + len+=sprintf(buf+len,"WDT_CON0: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_CON0)); + len+=sprintf(buf+len,"WDT_CON1: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_CON1)); + len+=sprintf(buf+len,"WDT_SR: 0x%08x\n",AMAZON_WDT_REG32(AMAZON_WDT_SR)); + *eof = 1; + return len; +} +#endif + +static struct file_operations wdt_fops = { + read: wdt_read, + write: wdt_write, + ioctl: wdt_ioctl, + open: wdt_open, + release: wdt_release, +}; + +int __init amazon_wdt_init_module(void) +{ + int result = result = register_chrdev(0, "watchdog", &wdt_fops); + + if (result < 0) { + printk(KERN_INFO DRV_NAME "cannot register device\n"); + return result; + } + +#ifdef AMAZON_WDT_DEBUG + amazon_wdt_dir=proc_mkdir("amazon_wdt",NULL); + create_proc_read_entry("wdt_register", 0, amazon_wdt_dir, + wdt_register_proc_read, NULL); +#endif + + amazon_wdt_isopen=0; + printk(KERN_INFO DRV_NAME "driver loaded but inactive"); + return 0; +} + +void amazon_wdt_cleanup_module(void) +{ + unregister_chrdev(0, "watchdog"); +#ifdef AMAZON_WDT_DEBUG + remove_proc_entry("wdt_register", amazon_wdt_dir); + remove_proc_entry("amazon_wdt", NULL); +#endif + printk(KERN_INFO DRV_NAME "unregistered"); + return; +} + +MODULE_LICENSE ("GPL"); +MODULE_AUTHOR("Infineon / John Crispin <blogic@openwrt.org>"); +MODULE_DESCRIPTION("AMAZON WDT driver"); + +module_init(amazon_wdt_init_module); +module_exit(amazon_wdt_cleanup_module); + diff --git a/target/linux/amazon-2.6/patches/017-wdt-driver.patch b/target/linux/amazon-2.6/patches/017-wdt-driver.patch new file mode 100644 index 000000000..b915ebe51 --- /dev/null +++ b/target/linux/amazon-2.6/patches/017-wdt-driver.patch @@ -0,0 +1,10 @@ +--- linux-2.6.21.5/drivers/char/watchdog/Makefile.orig 2007-08-05 11:13:29.177013987 +0200 ++++ linux-2.6.21.5/drivers/char/watchdog/Makefile 2007-08-05 11:13:52.190325445 +0200 +@@ -74,6 +74,7 @@ + # MIPS Architecture + obj-$(CONFIG_INDYDOG) += indydog.o + obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o ++obj-$(CONFIG_AMAZON_WDT) += amazon_wdt.o + + # S390 Architecture + |