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Diffstat (limited to 'target/linux/amazon-2.6/files/drivers/char/amazon_wdt.c')
-rw-r--r--target/linux/amazon-2.6/files/drivers/char/amazon_wdt.c261
1 files changed, 0 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 c6a90f07b2..0000000000
--- 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);
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-03 03:33:42 +0000