2011/11/22 Justin Azoff <jaz...@albany.edu>: > On Tue, Nov 22, 2011 at 05:13:13PM +0100, Dominique Martinet wrote: >> Hi, >> >> Is the dmesg output the one without pio=1? >> It says: >> [ 28.236344] b43-phy0: Loading firmware version 478.104 (2008-07-01 >> 00:50:23) >> [ 33.772580] b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, >> 0x00000000, 0x00000000, 0x00000000, 0x00000000 >> [ 33.778855] b43-phy0 ERROR: This device does not support DMA on your >> system. It will now be switched to PIO. >> [ 33.784685] b43-phy0: Controller RESET (DMA error) ... >> >> so I would suppose it fell back to pio=1 and missed something during the >> initialization (assuming it works when you modprobe it with pio=1 >> directly) > > That is correct: > > * with pio=1 it works > * without pio=0 you get the above message, but then it is never able to > connect. > >> That being said, it is supposed to work on linux >= 3.0, so I'd try with >> a more recent firmware just to see if it helps. >> (cf. >> http://linuxwireless.org/en/users/Drivers/b43?highlight=%28b43%29#List_of_firmware >> ) > > Ah, I didn't even think to upgrade the firmware.. the debian package > that installs the firmware grabs this url: > http://downloads.openwrt.org/sources/broadcom-wl-4.178.10.4.tar.bz2 > > which appears to be a few versions behind. I'm installed > broadcom-wl-5.10.56.27.3_mipsel.tar.bz2 and am testing kernels now. > > 3.1.0-1-686-pae with the new firmware seems to be working :-) > > It went from > > 2011-11-22 12:24:23 check=DL ok=True download_time=26.44 timeout=False > min_speed=544 avg_speed=774 max_speed=888 > > to > > 2011-11-22 12:42:16 check=DL ok=True download_time=11.75 timeout=False > min_speed=1376 avg_speed=1743 max_speed=1976 > > and CPU usage is only 15% now.
Huh, that sound interesting. So updating firmware fixed DMA issues for you, right? Are you really sure you're using DMA? I didn't think Broadcom could fix something about DMA errors (timeouts?) of LP-PHY in the recent firmware. Is this still working fine for you? After that ~2 days? -- Rafał _______________________________________________ b43-dev mailing list b43-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/b43-dev
