On 01/30/2012 07:29 AM, Rafał Miłecki wrote: > 2012/1/30 Hauke Mehrtens <ha...@hauke-m.de>: >> On 01/29/2012 11:12 PM, Hauke Mehrtens wrote: >>> I got a device with a BCM5354 SoC and a LP-Phy Wifi core on it. With >>> current b43 it still fails with Out of memory when using a recent >>> firmware 666.2 and works with an old firmware 410.2160. I tried DMA and >>> PIO mode and had the same results. I added some printk's into the code >>> and implemented some parts b43 does not have but the Braodcom sdk and >>> brcmsmac has in the dma code, but I haven't resolved the issue. >>> >>> I found out the error occurs when send some packages doing "ifconfig >>> wlan0 up" does not result in any problems, but when I try to scan with >>> "iw wlan0 scan" it oopes very soon. The problem seams to be related to >>> TX as there are many packages received, but the oops occurs after 4 >>> calls to b43_dma_tx() >>> >>> Larry, you wrote some more LP spec based on a newer driver is there a >>> list with updated docs or should I manually look into all packages if I >>> want to implement it like it is in the new wl driver. >>> As I see there are also many parts not implemented, but described in the >>> spec so looking over the hole code is probably needed. >>> My device has a sprom of revision 3 and not the expected version 8, does >>> this cause any trouble? >>> >>> Hauke. >> My device is the following: >> >> ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x14, vendor 0x4243) >> ssb: Core 1 found: Fast Ethernet (cc 0x806, rev 0x09, vendor 0x4243) >> ssb: Core 2 found: MIPS 3302 (cc 0x816, rev 0x08, vendor 0x4243) >> ssb: Core 3 found: USB 2.0 Host (cc 0x819, rev 0x02, vendor 0x4243) >> ssb: Core 4 found: MEMC SDRAM (cc 0x80F, rev 0x04, vendor 0x4243) >> ssb: Core 5 found: IEEE 802.11 (cc 0x812, rev 0x0D, vendor 0x4243) >> ssb: Core 6 found: Roboswitch (cc 0x81C, rev 0x02, vendor 0x4243) >> >> b43-phy0: Broadcom 5354 WLAN found (core revision 13) >> b43-phy0 debug: Found PHY: Analog 6, Type 5, Revision 0 >> b43-phy0 debug: Found Radio: Manuf 0x17F, Version 0x2062, Revision 1 >> >> When doing a passive scan with iw it works without any problems and I >> get my results without any kernel oops, but when doing an active scan I >> get an oops. > > If you search for "out of memory b43" you will find the thread where > we were trying to find the issue. Unfortunately without the real > access to the hardware it wasn't easy to debug this. Sending patches > to someone, waiting for recompiling & testing, checking results... I > failed at that process :( Yeah this will work with obvious bugs, but this seams to be hard bug. I will investigate deeper into it. > > While I'll try to implement/update LP-PHY code, I think it still would > be nice to investigate this problem. Do we have some leak in b43? We > should fix it if so. I haven't found a leak in b43 yet, just one in an OpenWrt switch driver, while searching in b43. ;-) It's nice to hear that you will work on the LP-PHY part, to me it looks like ~30% of the spec is not implemented. have you started implementing the GMAC Ethernet driver? > > Could you check what exactly happens in b43_dma_tx please? Yes I will look deeper into this. Do you have a working LP-PHY device, so that I could give you some patches and then compare the output?
Hauke _______________________________________________ b43-dev mailing list b43-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/b43-dev
