From 923fd7036ff04381b265037469c79a2e7d0d6b67 Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Fri, 20 Jun 2008 18:02:08 +0200 Subject: [PATCH] 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 Signed-off-by: John W. Linville --- drivers/net/wireless/b43/debugfs.c | 1 + drivers/net/wireless/b43/debugfs.h | 1 + drivers/net/wireless/b43/main.c | 13 +++++++++++++ 3 files changed, 15 insertions(+) diff --git a/drivers/net/wireless/b43/debugfs.c b/drivers/net/wireless/b43/debugfs.c index 24854c3e89c..29851bc1101 100644 --- a/drivers/net/wireless/b43/debugfs.c +++ b/drivers/net/wireless/b43/debugfs.c @@ -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 } diff --git a/drivers/net/wireless/b43/debugfs.h b/drivers/net/wireless/b43/debugfs.h index 132c81f2f98..22ffd02ba55 100644 --- a/drivers/net/wireless/b43/debugfs.h +++ b/drivers/net/wireless/b43/debugfs.h @@ -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, }; diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index c14d522d69e..82cca19137f 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -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) { -- 2.41.0