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fix failsafe on broadcom, send netlink events in diag when running linux 2.6

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SVN-Revision: 7722
This commit is contained in:
Felix Fietkau
2007-06-25 08:32:25 +00:00
parent a99b79e9ad
commit 8c41e51e92
13 changed files with 222 additions and 84 deletions
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138
package/broadcom-diag/src/diag.c
View File

@@ -2,7 +2,7 @@
* diag.c - GPIO interface driver for Broadcom boards
*
* Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
* Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2006-2007 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -28,10 +28,13 @@
#include <linux/version.h>
#include <asm/uaccess.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#include <linux/kobject.h>
#ifndef LINUX_2_4
#include <linux/workqueue.h>
#define hotplug_path uevent_helper
#include <linux/skbuff.h>
#include <linux/netlink.h>
#include <net/sock.h>
extern struct sock *uevent_sock;
extern u64 uevent_next_seqnum(void);
#else
#include <linux/tqueue.h>
#define INIT_WORK INIT_TQUEUE
@@ -43,6 +46,7 @@
#include "diag.h"
#define getvar(str) (nvram_get(str)?:"")
static int fill_event(struct event_t *);
static unsigned int gpiomask = 0;
module_param(gpiomask, int, 0644);
@@ -713,23 +717,104 @@ static void unregister_buttons(struct button_t *b)
gpio_set_irqenable(0, button_handler);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
#ifndef LINUX_2_4
static void add_msg(struct event_t *event, char *msg, int argv)
{
char *s;
if (argv)
return;
s = skb_put(event->skb, strlen(msg) + 1);
strcpy(s, msg);
}
static void hotplug_button(struct work_struct *work)
{
struct event_t *event = container_of(work, struct event_t, wq);
#else
static void hotplug_button(struct event_t *event)
{
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
#else
call_usermodehelper (event->argv[0], event->argv, event->envp);
#endif
char *s;
if (!uevent_sock)
return;
event->skb = alloc_skb(2048, GFP_KERNEL);
s = skb_put(event->skb, strlen(event->action) + 2);
sprintf(s, "%s@", event->action);
fill_event(event);
NETLINK_CB(event->skb).dst_group = 1;
netlink_broadcast(uevent_sock, event->skb, 0, 1, GFP_KERNEL);
kfree(event);
}
#else /* !LINUX_2_4 */
static inline char *kzalloc(unsigned int size, unsigned int gfp)
{
char *p;
p = kmalloc(size, gfp);
if (p == NULL)
return NULL;
memset(p, 0, size);
return p;
}
static void add_msg(struct event_t *event, char *msg, int argv)
{
if (argv)
event->argv[event->anr++] = event->scratch;
else
event->envp[event->enr++] = event->scratch;
event->scratch += sprintf(event->scratch, "%s", msg) + 1;
}
static void hotplug_button(struct event_t *event)
{
char *scratch = kzalloc(256, GFP_KERNEL);
event->scratch = scratch;
add_msg(event, hotplug_path, 1);
add_msg(event, "button", 1);
fill_event(event);
call_usermodehelper (event->argv[0], event->argv, event->envp);
kfree(scratch);
kfree(event);
}
#endif /* !LINUX_2_4 */
static int fill_event (struct event_t *event)
{
static char buf[128];
add_msg(event, "HOME=/", 0);
add_msg(event, "PATH=/sbin:/bin:/usr/sbin:/usr/bin", 0);
add_msg(event, "SUBSYSTEM=button", 0);
snprintf(buf, 128, "ACTION=%s", event->action);
add_msg(event, buf, 0);
snprintf(buf, 128, "BUTTON=%s", event->name);
add_msg(event, buf, 0);
snprintf(buf, 128, "SEEN=%ld", event->seen);
add_msg(event, buf, 0);
#ifndef LINUX_2_4
snprintf(buf, 128, "SEQNUM=%llu", uevent_next_seqnum());
add_msg(event, buf, 0);
#endif
return 0;
}
#ifndef LINUX_2_4
static irqreturn_t button_handler(int irq, void *dev_id)
#else
static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
#endif
{
struct button_t *b;
u32 in, changed;
@@ -748,26 +833,10 @@ static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
b->pressed ^= 1;
if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
int i;
char *scratch = event->buf;
i = 0;
event->argv[i++] = hotplug_path;
event->argv[i++] = "button";
event->argv[i] = 0;
i = 0;
event->envp[i++] = "HOME=/";
event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
event->envp[i++] = scratch;
scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
event->envp[i++] = scratch;
scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
event->envp[i++] = scratch;
scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
event->envp[i] = 0;
if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
event->seen = (jiffies - b->seen)/HZ;
event->name = b->name;
event->action = b->pressed ? "pressed" : "released";
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
#else
@@ -1024,7 +1093,6 @@ static int __init diag_init(void)
static void __exit diag_exit(void)
{
del_timer(&led_timer);
if (platform.buttons)

18
package/broadcom-diag/src/diag.h
View File

@@ -74,9 +74,16 @@ struct platform_t {
struct event_t {
struct work_struct wq;
char buf[256];
char *argv[3];
char *envp[6];
unsigned long seen;
char *name, *action;
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
struct sk_buff *skb;
#else
char *scratch;
char *argv[4];
char *envp[7];
u8 enr, anr;
#endif
};
extern char *nvram_get(char *str);
@@ -88,12 +95,13 @@ static struct platform_t platform;
static void register_buttons(struct button_t *b);
static void unregister_buttons(struct button_t *b);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
#ifndef LINUX_2_4
static void hotplug_button(struct work_struct *work);
static irqreturn_t button_handler(int irq, void *dev_id);
#else
static void hotplug_button(struct event_t *event);
#endif
static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs);
#endif
/* leds */

10
package/broadcom-diag/src/gpio.h
View File

@@ -53,7 +53,7 @@ static inline u32 gpio_intpolarity(u32 mask, u32 value)
gpio_op(polarity, mask, value);
}
static void gpio_set_irqenable(int enabled, irqreturn_t (*handler)(int, void *, struct pt_regs *))
static void gpio_set_irqenable(int enabled, irqreturn_t (*handler)(int, void *))
{
int irq;
@@ -63,10 +63,12 @@ static void gpio_set_irqenable(int enabled, irqreturn_t (*handler)(int, void *,
irq = ssb_mips_irq(ssb.extif.dev) + 2;
else return;
if (enabled)
request_irq(irq, handler, SA_SHIRQ | SA_SAMPLE_RANDOM, "gpio", handler);
else
if (enabled) {
if (request_irq(irq, handler, IRQF_SHARED | IRQF_SAMPLE_RANDOM, "gpio", handler))
return;
} else {
free_irq(irq, handler);
}
if (ssb.chipco.dev)
ssb_write32_masked(ssb.chipco.dev, SSB_CHIPCO_IRQMASK, SSB_CHIPCO_IRQ_GPIO, (enabled ? SSB_CHIPCO_IRQ_GPIO : 0));