---- "Gábor Stefanik" <netrolller...@gmail.com> wrote: > On Fri, Oct 2, 2009 at 11:04 PM, <fre...@carolina.rr.com> wrote: > > > > 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) > > Won't work - LP-PHY only supports 64bit DMA. > > > * 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 > > > > Try installing a proper wireless-testing kernel (not just > compat-wireless). This issue seems to specifically affect > 2.6.31+compat-wireless users (probably something needs to be > backported). 2.6.32-rc1+compat-wireless shoud also work.
Thanks! I cloned the latest wireless-testing from last night, 2.6.32-rc3 I think. That seems to work so far, with several hundreds of MB FTP transfers OK. Previously DMA errors would show up immediately after starting the transfer. Still get the "NOHZ: local_softirq_pending" stuff. I will test more transfers and a suspend/resume cycle later tonight, as Lance has reported. Any chance of finding out what needs to be fixed for 2.6.31? Fedora is about to release F12 with a 2.6.31 kernel, and it would be great to be able to backport a fix. I'm a git noob, but I don't see how to bisect between the wireless-testing tree and compat-wireless. Lance, you wrote that if you cold boot, then 'sometimes' you can connect. That means sometimes it *fails* after a cold boot too? Same DMA errors? regards, ......... Charlie > > > 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 > > > > > > -- > Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-) _______________________________________________ Bcm43xx-dev mailing list Bcm43xx-dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
