Hi Folks -- 
 
I've read in the archives about DMA errors with the LP-PHY, but there didn't 
seem to be any conclusion.  Any guidance on what I can test to get it working?  
It's reproducable on my Lenovo G530 laptop.  (Yes, I know forcing PIO works for 
others, and it works for me too, but I'd like to help testing if I can). 
 
Any guidance on which tests would be most likely to work?  AFAIK, options to 
test include: 
* 64bit kernel (and userland?) 
* Hack b43/dma.c to force fallback to 32bit DMA (as a trial datapoint only) 
* Boot with Mem=2G.  Currently 4G ram is installed. 
* Firmware 5xx 

Or is this a HW design error in the laptop, and I should just live with forcing 
PIO?
 
My system details: 
* Compat-wireless-2009-09-30 (and also back to 9-21) 
* Fedora Rawhide 32-bit, kernel 2.6.31.1-56.fc12.i686 
* Firmware 478.104 
* Fatal DMA error soon after heavy traffic starts 
 
dmesg extract: 
 
ssb: Sonics Silicon Backplane found on PCI device 0000:04:00.0 
b43-phy0: Broadcom 4312 WLAN found (core revision 15) 
b43-phy0 debug: Found PHY: Analog 6, Type 5, Revision 1 
b43-phy0 debug: Found Radio: Manuf 0x17F, Version 0x2062, Revision 2 
phy0: Selected rate control algorithm 'minstrel' 
Registered led device: b43-phy0::tx 
Registered led device: b43-phy0::rx 
Registered led device: b43-phy0::radio 
Broadcom 43xx driver loaded [ Features: PML, Firmware-ID: FW13 ] 
b43 ssb0:0: firmware: requesting b43/ucode15.fw 
cfg80211: Calling CRDA for country: US 
cfg80211: Regulatory domain changed to country: US 
        (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) 
        (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm) 
        (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm) 
        (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) 
        (5490000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) 
        (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm) 
b43 ssb0:0: firmware: requesting b43/lp0initvals15.fw 
b43 ssb0:0: firmware: requesting b43/lp0bsinitvals15.fw 
b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) 
b43-phy0 debug: b2062: Using crystal tab entry 19200 kHz. 
b43-phy0 debug: RC calib: Failed to switch to channel 7, error = -5 
b43-phy0 debug: Chip initialized 
b43-phy0 debug: 64-bit DMA initialized 
b43-phy0 debug: QoS enabled 
b43-phy0 debug: Wireless interface started 
b43-phy0 debug: Adding Interface type 2 
ADDRCONF(NETDEV_UP): wlan0: link is not ready 
wlan0: deauthenticating from 00:0c:41:e2:f9:81 by local choice (reason=3) 
wlan0: direct probe to AP 00:0c:41:e2:f9:81 (try 1) 
wlan0: direct probe responded 
wlan0: authenticate with AP 00:0c:41:e2:f9:81 (try 1) 
wlan0: authenticated 
wlan0: associate with AP 00:0c:41:e2:f9:81 (try 1) 
wlan0: RX AssocResp from 00:0c:41:e2:f9:81 (capab=0x411 status=0 aid=2) 
wlan0: associated 
ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 
b43-phy0 debug: Using hardware based encryption for keyidx: 0, mac: 
ff:ff:ff:ff:ff:ff 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
NOHZ: local_softirq_pending 08 
wlan0: no IPv6 routers present 
CE: hpet increasing min_delta_ns to 15000 nsec 
b43-phy0 ERROR: Fatal DMA error: 0x00000000, 0x00000400, 0x00000000, 
0x00000000, 
0x00000000, 0x00000000 
b43-phy0: Controller RESET (DMA error) ... 
b43-phy0 debug: Wireless interface stopped 
b43-phy0 debug: DMA-64 rx_ring: Used slots 8/64, Failed frames 0/0 = 0.0%, 
Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_BK: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_BE: Used slots 256/256, Failed frames 0/7742 
= 
0.0%, Average tries 1.37 
b43-phy0 debug: DMA-64 tx_ring_AC_VI: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_VO: Used slots 2/256, Failed frames 0/555 = 
0.0%, Average tries 1.01 
b43-phy0 debug: DMA-64 tx_ring_mcast: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) 
b43-phy0 debug: b2062: Using crystal tab entry 19200 kHz. 
b43-phy0 debug: Chip initialized 
b43-phy0 debug: 64-bit DMA initialized 
b43-phy0 debug: QoS enabled 
b43-phy0 debug: Wireless interface started 
b43-phy0: Controller restarted 
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 
0x00000000, 
0x00000000, 0x00000000 
b43-phy0: Controller RESET (DMA error) ... 
b43-phy0 debug: Wireless interface stopped 
b43-phy0 debug: DMA-64 rx_ring: Used slots 0/64, Failed frames 0/0 = 0.0%, 
Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_BK: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_BE: Used slots 1/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_VI: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_VO: Used slots 2/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_mcast: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) 
b43-phy0 debug: b2062: Using crystal tab entry 19200 kHz. 
b43-phy0 debug: Chip initialized 
b43-phy0 debug: 64-bit DMA initialized 
b43-phy0 debug: QoS enabled 
b43-phy0 debug: Wireless interface started 
b43-phy0: Controller restarted 
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 
0x00000000, 
0x00000000, 0x00000000 
b43-phy0: Controller RESET (DMA error) ... 
b43-phy0 debug: Wireless interface stopped 
b43-phy0 debug: DMA-64 rx_ring: Used slots 0/64, Failed frames 0/0 = 0.0%, 
Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_BK: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_BE: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_VI: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_AC_VO: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0 debug: DMA-64 tx_ring_mcast: Used slots 0/256, Failed frames 0/0 = 
0.0%, Average tries 0.00 
b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) 
b43-phy0 debug: b2062: Using crystal tab entry 19200 kHz. 
b43-phy0 debug: Chip initialized 
b43-phy0 debug: 64-bit DMA initialized 
b43-phy0 debug: QoS enabled 
 
etc etc. 
 
regards, .............. Charlie 

_______________________________________________
Bcm43xx-dev mailing list
Bcm43xx-dev@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/bcm43xx-dev

Reply via email to