From 20abafaaf5fdb4dd7cb1e09a028b1c2c689557b7 Mon Sep 17 00:00:00 2001 From: blogic Date: Sat, 22 Dec 2007 14:00:25 +0000 Subject: more danube 2 ifxmips transitions git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9826 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../files/drivers/char/watchdog/danube_wdt.c | 287 --------------------- .../files/drivers/char/watchdog/ifxmips_wdt.c | 287 +++++++++++++++++++++ 2 files changed, 287 insertions(+), 287 deletions(-) delete mode 100644 target/linux/ifxmips/files/drivers/char/watchdog/danube_wdt.c create mode 100644 target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c (limited to 'target/linux/ifxmips/files/drivers/char/watchdog') diff --git a/target/linux/ifxmips/files/drivers/char/watchdog/danube_wdt.c b/target/linux/ifxmips/files/drivers/char/watchdog/danube_wdt.c deleted file mode 100644 index 8fcbc8803..000000000 --- a/target/linux/ifxmips/files/drivers/char/watchdog/danube_wdt.c +++ /dev/null @@ -1,287 +0,0 @@ -/* - * 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) 2006 infineon - * Copyright (C) 2007 John Crispin - * - */ - -#include -#include -#include -#include -#include -#include -#include - - -// TODO remove magic numbers and weirdo macros - -extern unsigned int ifxmips_get_fpi_hz (void); - -static int ifxmips_wdt_inuse = 0; -static int ifxmips_wdt_major = 0; - -int -ifxmips_wdt_enable (unsigned int timeout) -{ - unsigned int wdt_cr = 0; - unsigned int wdt_reload = 0; - unsigned int wdt_clkdiv, wdt_pwl, ffpi; - int retval = 0; - - /* clock divider & prewarning limit */ - wdt_clkdiv = 1 << (7 * IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR))); - wdt_pwl = 0x8000 >> IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR)); - - //TODO - printk("WARNING FUNCTION CALL MISSING!!!"); - //ffpi = cgu_get_io_region_clock(); - printk("cpu clock = %d\n", ffpi); - - /* caculate reload value */ - wdt_reload = (timeout * (ffpi / wdt_clkdiv)) + wdt_pwl; - - printk("wdt_pwl=0x%x, wdt_clkdiv=%d, ffpi=%d, wdt_reload = 0x%x\n", - wdt_pwl, wdt_clkdiv, ffpi, wdt_reload); - - if (wdt_reload > 0xFFFF) - { - printk ("timeout too large %d\n", timeout); - retval = -EINVAL; - goto out; - } - - /* Write first part of password access */ - writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); - - wdt_cr = readl(IFXMIPS_BIU_WDT_CR); - wdt_cr &= (!IFXMIPS_BIU_WDT_CR_PW_SET(0xff) & - !IFXMIPS_BIU_WDT_CR_PWL_SET(0x3) & - !IFXMIPS_BIU_WDT_CR_CLKDIV_SET(0x3) & - !IFXMIPS_BIU_WDT_CR_RELOAD_SET(0xffff)); - - wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | - IFXMIPS_BIU_WDT_CR_PWL_SET(IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR))) | - IFXMIPS_BIU_WDT_CR_CLKDIV_SET(IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR))) | - IFXMIPS_BIU_WDT_CR_RELOAD_SET(wdt_reload) | - IFXMIPS_BIU_WDT_CR_GEN); - - writel(wdt_cr, IFXMIPS_BIU_WDT_CR); - - printk("watchdog enabled\n"); - -out: - return retval; -} - -void -ifxmips_wdt_disable (void) -{ - writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); - writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2), IFXMIPS_BIU_WDT_CR); - - printk("watchdog disabled\n"); -} - -/* passed LPEN or DSEN */ -void -ifxmips_wdt_enable_feature (int en, int type) -{ - unsigned int wdt_cr = 0; - - writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); - - wdt_cr = readl(IFXMIPS_BIU_WDT_CR); - - if (en) - { - wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff)); - wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | type); - } else { - wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff) & ~type); - wdt_cr |= IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2); - } - - writel(wdt_cr, IFXMIPS_BIU_WDT_CR); -} - -void -ifxmips_wdt_prewarning_limit (int pwl) -{ - unsigned int wdt_cr = 0; - - wdt_cr = readl(IFXMIPS_BIU_WDT_CR); - writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); - - wdt_cr &= 0xf300ffff; - wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_PWL_SET(pwl)); - - /* Set reload value in second password access */ - writel(wdt_cr, IFXMIPS_BIU_WDT_CR); -} - -void -ifxmips_wdt_set_clkdiv (int clkdiv) -{ - unsigned int wdt_cr = 0; - - wdt_cr = readl(IFXMIPS_BIU_WDT_CR); - writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); - - wdt_cr &= 0xfc00ffff; - wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_CLKDIV_SET(clkdiv)); - - /* Set reload value in second password access */ - writel(wdt_cr, IFXMIPS_BIU_WDT_CR); -} - -static int -ifxmips_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg) -{ - int result = 0; - static int timeout = -1; - unsigned int user_arg; - - if ((cmd != IFXMIPS_WDT_IOC_STOP) && (cmd != IFXMIPS_WDT_IOC_PING) && (cmd != IFXMIPS_WDT_IOC_GET_STATUS)) - { - if (copy_from_user((void *) &user_arg, (void *) arg, sizeof (int))){ - result = -EINVAL; - goto out; - } - } - - switch (cmd) - { - case IFXMIPS_WDT_IOC_START: - if ((result = ifxmips_wdt_enable(user_arg)) < 0) - timeout = -1; - else - timeout = user_arg; - break; - - case IFXMIPS_WDT_IOC_STOP: - printk("disable watch dog timer\n"); - ifxmips_wdt_disable(); - break; - - case IFXMIPS_WDT_IOC_PING: - if (timeout < 0) - result = -EIO; - else - result = ifxmips_wdt_enable(timeout); - break; - - case IFXMIPS_WDT_IOC_GET_STATUS: - user_arg = readl(IFXMIPS_BIU_WDT_SR); - copy_to_user((int*)arg, (int*)&user_arg, sizeof(int)); - break; - - case IFXMIPS_WDT_IOC_SET_PWL: - ifxmips_wdt_prewarning_limit(user_arg); - break; - - case IFXMIPS_WDT_IOC_SET_DSEN: - ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_DSEN); - break; - - case IFXMIPS_WDT_IOC_SET_LPEN: - ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_LPEN); - break; - - case IFXMIPS_WDT_IOC_SET_CLKDIV: - ifxmips_wdt_set_clkdiv(user_arg); - break; - - default: - printk("unknown watchdog iotcl\n"); - } - -out: - return result; -} - -static int -ifxmips_wdt_open (struct inode *inode, struct file *file) -{ - if (ifxmips_wdt_inuse) - return -EBUSY; - - ifxmips_wdt_inuse = 1; - - return 0; -} - -static int -ifxmips_wdt_release (struct inode *inode, struct file *file) -{ - ifxmips_wdt_inuse = 0; - - return 0; -} - -int -ifxmips_wdt_register_proc_read (char *buf, char **start, off_t offset, int count, - int *eof, void *data) -{ - int len = 0; - - len += sprintf (buf + len, "IFXMIPS_BIU_WDT_PROC_READ\n"); - len += sprintf (buf + len, "IFXMIPS_BIU_WDT_CR(0x%08x) : 0x%08x\n", - (unsigned int)IFXMIPS_BIU_WDT_CR, readl(IFXMIPS_BIU_WDT_CR)); - len += sprintf (buf + len, "IFXMIPS_BIU_WDT_SR(0x%08x) : 0x%08x\n", - (unsigned int)IFXMIPS_BIU_WDT_SR, readl(IFXMIPS_BIU_WDT_SR)); - - *eof = 1; - - return len; -} - -static struct file_operations wdt_fops = { - .owner = THIS_MODULE, - .ioctl = ifxmips_wdt_ioctl, - .open = ifxmips_wdt_open, - .release = ifxmips_wdt_release, -}; - -int __init -ifxmips_wdt_init_module (void) -{ - ifxmips_wdt_major = register_chrdev(0, "wdt", &wdt_fops); - - if (ifxmips_wdt_major < 0) - { - printk("cannot register watchdog device\n"); - - return -EINVAL; - } - - create_proc_read_entry("ifxmips_wdt", 0, NULL, ifxmips_wdt_register_proc_read, NULL); - - printk("ifxmips watchdog loaded\n"); - - return 0; -} - -void -ifxmips_wdt_cleanup_module (void) -{ - unregister_chrdev(ifxmips_wdt_major, "wdt"); - remove_proc_entry("ifxmips_wdt", NULL); -} - -module_init(ifxmips_wdt_init_module); -module_exit(ifxmips_wdt_cleanup_module); diff --git a/target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c b/target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c new file mode 100644 index 000000000..8fcbc8803 --- /dev/null +++ b/target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c @@ -0,0 +1,287 @@ +/* + * 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) 2006 infineon + * Copyright (C) 2007 John Crispin + * + */ + +#include +#include +#include +#include +#include +#include +#include + + +// TODO remove magic numbers and weirdo macros + +extern unsigned int ifxmips_get_fpi_hz (void); + +static int ifxmips_wdt_inuse = 0; +static int ifxmips_wdt_major = 0; + +int +ifxmips_wdt_enable (unsigned int timeout) +{ + unsigned int wdt_cr = 0; + unsigned int wdt_reload = 0; + unsigned int wdt_clkdiv, wdt_pwl, ffpi; + int retval = 0; + + /* clock divider & prewarning limit */ + wdt_clkdiv = 1 << (7 * IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR))); + wdt_pwl = 0x8000 >> IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR)); + + //TODO + printk("WARNING FUNCTION CALL MISSING!!!"); + //ffpi = cgu_get_io_region_clock(); + printk("cpu clock = %d\n", ffpi); + + /* caculate reload value */ + wdt_reload = (timeout * (ffpi / wdt_clkdiv)) + wdt_pwl; + + printk("wdt_pwl=0x%x, wdt_clkdiv=%d, ffpi=%d, wdt_reload = 0x%x\n", + wdt_pwl, wdt_clkdiv, ffpi, wdt_reload); + + if (wdt_reload > 0xFFFF) + { + printk ("timeout too large %d\n", timeout); + retval = -EINVAL; + goto out; + } + + /* Write first part of password access */ + writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); + + wdt_cr = readl(IFXMIPS_BIU_WDT_CR); + wdt_cr &= (!IFXMIPS_BIU_WDT_CR_PW_SET(0xff) & + !IFXMIPS_BIU_WDT_CR_PWL_SET(0x3) & + !IFXMIPS_BIU_WDT_CR_CLKDIV_SET(0x3) & + !IFXMIPS_BIU_WDT_CR_RELOAD_SET(0xffff)); + + wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | + IFXMIPS_BIU_WDT_CR_PWL_SET(IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR))) | + IFXMIPS_BIU_WDT_CR_CLKDIV_SET(IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR))) | + IFXMIPS_BIU_WDT_CR_RELOAD_SET(wdt_reload) | + IFXMIPS_BIU_WDT_CR_GEN); + + writel(wdt_cr, IFXMIPS_BIU_WDT_CR); + + printk("watchdog enabled\n"); + +out: + return retval; +} + +void +ifxmips_wdt_disable (void) +{ + writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); + writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2), IFXMIPS_BIU_WDT_CR); + + printk("watchdog disabled\n"); +} + +/* passed LPEN or DSEN */ +void +ifxmips_wdt_enable_feature (int en, int type) +{ + unsigned int wdt_cr = 0; + + writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); + + wdt_cr = readl(IFXMIPS_BIU_WDT_CR); + + if (en) + { + wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff)); + wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | type); + } else { + wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff) & ~type); + wdt_cr |= IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2); + } + + writel(wdt_cr, IFXMIPS_BIU_WDT_CR); +} + +void +ifxmips_wdt_prewarning_limit (int pwl) +{ + unsigned int wdt_cr = 0; + + wdt_cr = readl(IFXMIPS_BIU_WDT_CR); + writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); + + wdt_cr &= 0xf300ffff; + wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_PWL_SET(pwl)); + + /* Set reload value in second password access */ + writel(wdt_cr, IFXMIPS_BIU_WDT_CR); +} + +void +ifxmips_wdt_set_clkdiv (int clkdiv) +{ + unsigned int wdt_cr = 0; + + wdt_cr = readl(IFXMIPS_BIU_WDT_CR); + writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR); + + wdt_cr &= 0xfc00ffff; + wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_CLKDIV_SET(clkdiv)); + + /* Set reload value in second password access */ + writel(wdt_cr, IFXMIPS_BIU_WDT_CR); +} + +static int +ifxmips_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd, + unsigned long arg) +{ + int result = 0; + static int timeout = -1; + unsigned int user_arg; + + if ((cmd != IFXMIPS_WDT_IOC_STOP) && (cmd != IFXMIPS_WDT_IOC_PING) && (cmd != IFXMIPS_WDT_IOC_GET_STATUS)) + { + if (copy_from_user((void *) &user_arg, (void *) arg, sizeof (int))){ + result = -EINVAL; + goto out; + } + } + + switch (cmd) + { + case IFXMIPS_WDT_IOC_START: + if ((result = ifxmips_wdt_enable(user_arg)) < 0) + timeout = -1; + else + timeout = user_arg; + break; + + case IFXMIPS_WDT_IOC_STOP: + printk("disable watch dog timer\n"); + ifxmips_wdt_disable(); + break; + + case IFXMIPS_WDT_IOC_PING: + if (timeout < 0) + result = -EIO; + else + result = ifxmips_wdt_enable(timeout); + break; + + case IFXMIPS_WDT_IOC_GET_STATUS: + user_arg = readl(IFXMIPS_BIU_WDT_SR); + copy_to_user((int*)arg, (int*)&user_arg, sizeof(int)); + break; + + case IFXMIPS_WDT_IOC_SET_PWL: + ifxmips_wdt_prewarning_limit(user_arg); + break; + + case IFXMIPS_WDT_IOC_SET_DSEN: + ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_DSEN); + break; + + case IFXMIPS_WDT_IOC_SET_LPEN: + ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_LPEN); + break; + + case IFXMIPS_WDT_IOC_SET_CLKDIV: + ifxmips_wdt_set_clkdiv(user_arg); + break; + + default: + printk("unknown watchdog iotcl\n"); + } + +out: + return result; +} + +static int +ifxmips_wdt_open (struct inode *inode, struct file *file) +{ + if (ifxmips_wdt_inuse) + return -EBUSY; + + ifxmips_wdt_inuse = 1; + + return 0; +} + +static int +ifxmips_wdt_release (struct inode *inode, struct file *file) +{ + ifxmips_wdt_inuse = 0; + + return 0; +} + +int +ifxmips_wdt_register_proc_read (char *buf, char **start, off_t offset, int count, + int *eof, void *data) +{ + int len = 0; + + len += sprintf (buf + len, "IFXMIPS_BIU_WDT_PROC_READ\n"); + len += sprintf (buf + len, "IFXMIPS_BIU_WDT_CR(0x%08x) : 0x%08x\n", + (unsigned int)IFXMIPS_BIU_WDT_CR, readl(IFXMIPS_BIU_WDT_CR)); + len += sprintf (buf + len, "IFXMIPS_BIU_WDT_SR(0x%08x) : 0x%08x\n", + (unsigned int)IFXMIPS_BIU_WDT_SR, readl(IFXMIPS_BIU_WDT_SR)); + + *eof = 1; + + return len; +} + +static struct file_operations wdt_fops = { + .owner = THIS_MODULE, + .ioctl = ifxmips_wdt_ioctl, + .open = ifxmips_wdt_open, + .release = ifxmips_wdt_release, +}; + +int __init +ifxmips_wdt_init_module (void) +{ + ifxmips_wdt_major = register_chrdev(0, "wdt", &wdt_fops); + + if (ifxmips_wdt_major < 0) + { + printk("cannot register watchdog device\n"); + + return -EINVAL; + } + + create_proc_read_entry("ifxmips_wdt", 0, NULL, ifxmips_wdt_register_proc_read, NULL); + + printk("ifxmips watchdog loaded\n"); + + return 0; +} + +void +ifxmips_wdt_cleanup_module (void) +{ + unregister_chrdev(ifxmips_wdt_major, "wdt"); + remove_proc_entry("ifxmips_wdt", NULL); +} + +module_init(ifxmips_wdt_init_module); +module_exit(ifxmips_wdt_cleanup_module); -- cgit v1.2.3