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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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0
package/hotplug2/files/hotplug2-init.rules → package/base-files/files/etc/hotplug2-init.rules
View file

10
package/base-files/files/etc/preinit
View file

@ -23,7 +23,8 @@ else
mount -t tmpfs tmpfs /dev -o size=512K
mknod /dev/console c 5 1
mkdir /dev/shm
/sbin/hotplug2 --no-persistent --coldplug --set-rules-file /etc/hotplug2-init.rules
/sbin/hotplug2 --coldplug --set-rules-file /etc/hotplug2-init.rules
/sbin/hotplug2 --no-coldplug --persistent --set-rules-file /etc/hotplug2-init.rules &
M0=/dev/ptmx
M1=/dev/ptmx
HOTPLUG=
@ -42,19 +43,16 @@ dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && {
exec <$M0 >$M1 2>&0
{
echo "- preinit -"
[ -e /etc/preinit.arch ] && . /etc/preinit.arch
set_state preinit
echo "$HOTPLUG" > /proc/sys/kernel/hotplug
eval ${FAILSAFE:+failsafe}
lock -w /tmp/.failsafe
mount_root
echo "- init -"
} | tee /tmp/preinit.log
killall hotplug2
exec /sbin/init

2
package/broadcom-diag/Makefile
View file

@ -30,7 +30,7 @@ define Build/Prepare
endef
ifeq ($(BOARD),brcm)
BUILDFLAGS=-DBCMDRIVER -I$(LINUX_DIR)/arch/mips/bcm947xx/include
BUILDFLAGS=-DBCMDRIVER -I$(LINUX_DIR)/arch/mips/bcm947xx/include $(if $(CONFIG_LINUX_2_4),-DLINUX_2_4)
endif
define Build/Compile

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));

1
package/hotplug2/Makefile
View file

@ -34,7 +34,6 @@ MAKE_FLAGS += CFLAGS="$(TARGET_CFLAGS) -DHAVE_RULES"
define Package/hotplug2/install
$(INSTALL_DIR) $(1)/etc
$(INSTALL_DATA) ./files/hotplug2.rules $(1)/etc/
$(INSTALL_DATA) ./files/hotplug2-init.rules $(1)/etc/
$(INSTALL_DIR) $(1)/sbin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/hotplug2 $(1)/sbin/
endef

12
target/linux/brcm-2.4/base-files/default/etc/hotplug2-init.rules Normal file
View file

@ -0,0 +1,12 @@
DEVICENAME ~~ (tun|tap[0-9]) {
makedev /dev/net/%DEVICENAME% 0644
next
}
DEVPATH is set {
makedev /dev/%DEVICENAME% 0644
}
SUBSYSTEM ~~ button {
exec kill -USR1 1 ;
}

12
target/linux/brcm47xx-2.6/patches-2.6.22/140-export_uevent_handler.patch
View file

@ -1,12 +0,0 @@
Index: linux-2.6.22-rc4/lib/kobject_uevent.c
===================================================================
--- linux-2.6.22-rc4.orig/lib/kobject_uevent.c 2007-06-10 21:32:13.000000000 +0100
+++ linux-2.6.22-rc4/lib/kobject_uevent.c 2007-06-10 21:33:18.000000000 +0100
@@ -29,6 +29,7 @@
u64 uevent_seqnum;
char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
static DEFINE_SPINLOCK(sequence_lock);
+EXPORT_SYMBOL(uevent_helper);
#if defined(CONFIG_NET)
static struct sock *uevent_sock;
#endif

11
target/linux/brcm47xx-2.6/patches/140-export_uevent_handler.patch
View file

@ -1,11 +0,0 @@
diff -urN linux-2.6.19.ref/lib/kobject_uevent.c linux-2.6.19/lib/kobject_uevent.c
--- linux-2.6.19.ref/lib/kobject_uevent.c 2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6.19/lib/kobject_uevent.c 2006-12-04 21:33:48.000000000 +0100
@@ -29,6 +29,7 @@
u64 uevent_seqnum;
char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
static DEFINE_SPINLOCK(sequence_lock);
+EXPORT_SYMBOL(uevent_helper);
#if defined(CONFIG_NET)
static struct sock *uevent_sock;
#endif

37
target/linux/generic-2.6/patches-2.6.22/213-kobject_uevent.patch Normal file
View file

@ -0,0 +1,37 @@
--- linux-2.6.22-rc5/lib/kobject_uevent.c.old 2007-06-25 07:34:27.002266528 +0200
+++ linux-2.6.22-rc5/lib/kobject_uevent.c 2007-06-25 08:39:53.762308264 +0200
@@ -30,9 +30,22 @@
char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
static DEFINE_SPINLOCK(sequence_lock);
#if defined(CONFIG_NET)
-static struct sock *uevent_sock;
+struct sock *uevent_sock = NULL;
+EXPORT_SYMBOL_GPL(uevent_sock);
#endif
+u64 uevent_next_seqnum(void)
+{
+ u64 seq;
+
+ spin_lock(&sequence_lock);
+ seq = ++uevent_seqnum;
+ spin_unlock(&sequence_lock);
+
+ return seq;
+}
+EXPORT_SYMBOL_GPL(uevent_next_seqnum);
+
static char *action_to_string(enum kobject_action action)
{
switch (action) {
@@ -169,9 +182,7 @@
}
/* we will send an event, request a new sequence number */
- spin_lock(&sequence_lock);
- seq = ++uevent_seqnum;
- spin_unlock(&sequence_lock);
+ seq = uevent_next_seqnum();
sprintf(seq_buff, "SEQNUM=%llu", (unsigned long long)seq);
#if defined(CONFIG_NET)

37
target/linux/generic-2.6/patches/213-kobject_uevent.patch Normal file
View file

@ -0,0 +1,37 @@
--- linux-2.6.22-rc5/lib/kobject_uevent.c.old 2007-06-25 07:34:27.002266528 +0200
+++ linux-2.6.22-rc5/lib/kobject_uevent.c 2007-06-25 08:39:53.762308264 +0200
@@ -30,9 +30,22 @@
char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
static DEFINE_SPINLOCK(sequence_lock);
#if defined(CONFIG_NET)
-static struct sock *uevent_sock;
+struct sock *uevent_sock = NULL;
+EXPORT_SYMBOL_GPL(uevent_sock);
#endif
+u64 uevent_next_seqnum(void)
+{
+ u64 seq;
+
+ spin_lock(&sequence_lock);
+ seq = ++uevent_seqnum;
+ spin_unlock(&sequence_lock);
+
+ return seq;
+}
+EXPORT_SYMBOL_GPL(uevent_next_seqnum);
+
static char *action_to_string(enum kobject_action action)
{
switch (action) {
@@ -169,9 +182,7 @@
}
/* we will send an event, request a new sequence number */
- spin_lock(&sequence_lock);
- seq = ++uevent_seqnum;
- spin_unlock(&sequence_lock);
+ seq = uevent_next_seqnum();
sprintf(seq_buff, "SEQNUM=%llu", (unsigned long long)seq);
#if defined(CONFIG_NET)