From 8c41e51e92fda935eb907b9263ae44a30f9977bc Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 25 Jun 2007 08:32:25 +0000 Subject: [PATCH] fix failsafe on broadcom, send netlink events in diag when running linux 2.6 SVN-Revision: 7722 --- .../files/etc}/hotplug2-init.rules | 0 package/base-files/files/etc/init.d/boot | 2 +- package/base-files/files/etc/preinit | 26 ++-- package/broadcom-diag/Makefile | 2 +- package/broadcom-diag/src/diag.c | 138 +++++++++++++----- package/broadcom-diag/src/diag.h | 18 ++- package/broadcom-diag/src/gpio.h | 10 +- package/hotplug2/Makefile | 1 - .../default/etc/hotplug2-init.rules | 12 ++ .../140-export_uevent_handler.patch | 12 -- .../patches/140-export_uevent_handler.patch | 11 -- .../patches-2.6.22/213-kobject_uevent.patch | 37 +++++ .../patches/213-kobject_uevent.patch | 37 +++++ 13 files changed, 222 insertions(+), 84 deletions(-) rename package/{hotplug2/files => base-files/files/etc}/hotplug2-init.rules (100%) create mode 100644 target/linux/brcm-2.4/base-files/default/etc/hotplug2-init.rules delete mode 100644 target/linux/brcm47xx-2.6/patches-2.6.22/140-export_uevent_handler.patch delete mode 100644 target/linux/brcm47xx-2.6/patches/140-export_uevent_handler.patch create mode 100644 target/linux/generic-2.6/patches-2.6.22/213-kobject_uevent.patch create mode 100644 target/linux/generic-2.6/patches/213-kobject_uevent.patch diff --git a/package/hotplug2/files/hotplug2-init.rules b/package/base-files/files/etc/hotplug2-init.rules similarity index 100% rename from package/hotplug2/files/hotplug2-init.rules rename to package/base-files/files/etc/hotplug2-init.rules diff --git a/package/base-files/files/etc/init.d/boot b/package/base-files/files/etc/init.d/boot index 02519fbbc7..9990dc782f 100755 --- a/package/base-files/files/etc/init.d/boot +++ b/package/base-files/files/etc/init.d/boot @@ -40,7 +40,7 @@ start() { touch /var/log/lastlog ln -s /tmp/resolv.conf.auto /tmp/resolv.conf [ "$FAILSAFE" = "true" ] && touch /tmp/.failsafe - + /sbin/hotplug2 --persistent --max-children 1 & # the coldplugging of network interfaces needs to happen later, so we do it manually here diff --git a/package/base-files/files/etc/preinit b/package/base-files/files/etc/preinit index 85dbf314d3..e5fdd43ae1 100755 --- a/package/base-files/files/etc/preinit +++ b/package/base-files/files/etc/preinit @@ -23,7 +23,8 @@ else mount -t tmpfs tmpfs /dev -o size=512K mknod /dev/console c 5 1 mkdir /dev/shm - /sbin/hotplug2 --no-persistent --coldplug --set-rules-file /etc/hotplug2-init.rules + /sbin/hotplug2 --coldplug --set-rules-file /etc/hotplug2-init.rules + /sbin/hotplug2 --no-coldplug --persistent --set-rules-file /etc/hotplug2-init.rules & M0=/dev/ptmx M1=/dev/ptmx HOTPLUG= @@ -42,19 +43,16 @@ dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && { exec <$M0 >$M1 2>&0 -{ - echo "- preinit -" - [ -e /etc/preinit.arch ] && . /etc/preinit.arch - set_state preinit +echo "- preinit -" - echo "$HOTPLUG" > /proc/sys/kernel/hotplug - - eval ${FAILSAFE:+failsafe} - lock -w /tmp/.failsafe - - mount_root - - echo "- init -" -} | tee /tmp/preinit.log +[ -e /etc/preinit.arch ] && . /etc/preinit.arch +set_state preinit +echo "$HOTPLUG" > /proc/sys/kernel/hotplug +eval ${FAILSAFE:+failsafe} +lock -w /tmp/.failsafe +mount_root +echo "- init -" + +killall hotplug2 exec /sbin/init diff --git a/package/broadcom-diag/Makefile b/package/broadcom-diag/Makefile index c414c3d1c9..b21f33a63d 100644 --- a/package/broadcom-diag/Makefile +++ b/package/broadcom-diag/Makefile @@ -30,7 +30,7 @@ define Build/Prepare endef ifeq ($(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 diff --git a/package/broadcom-diag/src/diag.c b/package/broadcom-diag/src/diag.c index af1907992f..c53ff2f97c 100644 --- a/package/broadcom-diag/src/diag.c +++ b/package/broadcom-diag/src/diag.c @@ -2,7 +2,7 @@ * diag.c - GPIO interface driver for Broadcom boards * * Copyright (C) 2006 Mike Baker , - * Felix Fietkau + * Copyright (C) 2006-2007 Felix Fietkau * * 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 #include -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) -#include +#ifndef LINUX_2_4 #include -#define hotplug_path uevent_helper +#include +#include +#include +extern struct sock *uevent_sock; +extern u64 uevent_next_seqnum(void); #else #include #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) diff --git a/package/broadcom-diag/src/diag.h b/package/broadcom-diag/src/diag.h index 9b6dc36336..93fdedb85c 100644 --- a/package/broadcom-diag/src/diag.h +++ b/package/broadcom-diag/src/diag.h @@ -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 */ diff --git a/package/broadcom-diag/src/gpio.h b/package/broadcom-diag/src/gpio.h index 16f6ca41cd..6d83039ee7 100644 --- a/package/broadcom-diag/src/gpio.h +++ b/package/broadcom-diag/src/gpio.h @@ -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)); diff --git a/package/hotplug2/Makefile b/package/hotplug2/Makefile index c696f09f5b..94aadc0853 100644 --- a/package/hotplug2/Makefile +++ b/package/hotplug2/Makefile @@ -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 diff --git a/target/linux/brcm-2.4/base-files/default/etc/hotplug2-init.rules b/target/linux/brcm-2.4/base-files/default/etc/hotplug2-init.rules new file mode 100644 index 0000000000..098ad047a7 --- /dev/null +++ b/target/linux/brcm-2.4/base-files/default/etc/hotplug2-init.rules @@ -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 ; +} diff --git a/target/linux/brcm47xx-2.6/patches-2.6.22/140-export_uevent_handler.patch b/target/linux/brcm47xx-2.6/patches-2.6.22/140-export_uevent_handler.patch deleted file mode 100644 index f6a41f32a2..0000000000 --- a/target/linux/brcm47xx-2.6/patches-2.6.22/140-export_uevent_handler.patch +++ /dev/null @@ -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 diff --git a/target/linux/brcm47xx-2.6/patches/140-export_uevent_handler.patch b/target/linux/brcm47xx-2.6/patches/140-export_uevent_handler.patch deleted file mode 100644 index 6a6f51aa7b..0000000000 --- a/target/linux/brcm47xx-2.6/patches/140-export_uevent_handler.patch +++ /dev/null @@ -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 diff --git a/target/linux/generic-2.6/patches-2.6.22/213-kobject_uevent.patch b/target/linux/generic-2.6/patches-2.6.22/213-kobject_uevent.patch new file mode 100644 index 0000000000..62af2a182b --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/213-kobject_uevent.patch @@ -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) diff --git a/target/linux/generic-2.6/patches/213-kobject_uevent.patch b/target/linux/generic-2.6/patches/213-kobject_uevent.patch new file mode 100644 index 0000000000..62af2a182b --- /dev/null +++ b/target/linux/generic-2.6/patches/213-kobject_uevent.patch @@ -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)