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b43: Add debugfs firmware debugging knob 

This adds a firmware debugging knob to debugfs.
With this knob it's possible to enable advanced runtime firmware
checks.
For now it only implements one sanity check for the mac-suspend.
In future there'll probably be more.
If CONFIG_B43_DEBUG is disabled, these checks will collapse to nothing.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch 2008-06-20 18:02:08 +02:00 committed by John W. Linville
parent 9b839a7453
commit 923fd7036f
3 changed files with 15 additions and 0 deletions
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1
drivers/net/wireless/b43/debugfs.c
View File

@ -801,6 +801,7 @@ static void b43_add_dynamic_debug(struct b43_wldev *dev)
add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0);
add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0);
add_dyn_dbg("debug_lo", B43_DBG_LO, 0);
add_dyn_dbg("debug_firmware", B43_DBG_FIRMWARE, 0);
#undef add_dyn_dbg
}

1
drivers/net/wireless/b43/debugfs.h
View File

@ -11,6 +11,7 @@ enum b43_dyndbg { /* Dynamic debugging features */
B43_DBG_PWORK_FAST,
B43_DBG_PWORK_STOP,
B43_DBG_LO,
B43_DBG_FIRMWARE,
__B43_NR_DYNDBG,
};

13
drivers/net/wireless/b43/main.c
View File

@ -2487,6 +2487,19 @@ static void b43_gpio_cleanup(struct b43_wldev *dev)
/* http://bcm-specs.sipsolutions.net/EnableMac */
void b43_mac_enable(struct b43_wldev *dev)
{
if (b43_debug(dev, B43_DBG_FIRMWARE)) {
u16 fwstate;
fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
B43_SHM_SH_UCODESTAT);
if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
(fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
b43err(dev->wl, "b43_mac_enable(): The firmware "
"should be suspended, but current state is %u\n",
fwstate);
}
}
dev->mac_suspended--;
B43_WARN_ON(dev->mac_suspended < 0);
if (dev->mac_suspended == 0) {