On Thu, May 6, 2010 at 1:36 PM, Alexander Egorenkov <egore...@gmail.com> wrote: > Am 29.04.2010 22:15, schrieb Benoit PAPILLAULT: >> Robert Meschke a écrit : >>> Hi, >>> >>> thank you for your immediate response, Luis. It's a pity that DFS is not >>> supposed to work in the near future. A can provide more specific >>> information. I am working on a project, where I really need the 5 Ghz band >>> and have to respect national laws. >>> I am using Ubiquiti Networks SR71-A MIMO mini pci radios, based on the >>> Atheros AR 9160 bb/mac chip and AR5133 RF chip. I am really willing to >>> implement DFS if it is somehow possible for me. >>> Former in this thread it was mentioned that Radar Pulse Detection is done >>> by hardware itself and is supported by madwifi. I've checked the >>> madwifi-hal and the one of Sam Leffler for Radar Detection stuff. The >>> AR9160 is declared as compatible with AR5416 in the ah_devid.h: >>> >>> /* AR5416 compatible devid's */ >>> #define AR5416_DEVID_PCI 0x0023 /* AR5416 PCI (MB/CB) Owl */ >>> #define AR5416_DEVID_PCIE 0x0024 /* AR5416 PCI-E (XB) Owl */ >>> #define AR9160_DEVID_PCI 0x0027 /* AR9160 PCI Sowl */ >>> #define AR9280_DEVID_PCI 0x0029 /* AR9280 PCI Merlin */ >>> #define AR9280_DEVID_PCIE 0x002a /* AR9280 PCI-E Merlin */ >>> #define AR9285_DEVID_PCIE 0x002b /* AR9285 PCI-E Kite */ >>> >>> Register adresses for Radar Detection are defined for AR5211+ in >>> if_ath_radar.h. In the if_ath_radar.c this can be found: >>> >>> if (ar_device(sc)>= 5211) { >>> >>> ... >>> >>> } >>> >>> It implies to me that Radar Detection performed by the madwifi Driver could >>> possibly work for AR5416 (and therefore for AR9160, too). >>> >>> It has to be mentioned that there are register adress definitions for Radar >>> Detection in the hal of Sam Leffler but only for AR5211 and AR5212 and I've >>> read in forum that the AR5416 does not have Radar Detection caps. >>> >>> Are the hardware interfaces for Radar Detection of AR9160 and AR5211/12 the >>> same and is there any chance for madwifi code to work for ath9k too (after >>> necessary modifications)? >>> >>> Have anybody else information on this topic? I have access to signal >>> generators an spectrum analysers, so I could verify compliance with DFS but >>> I need the exact hardware specifications. >>> Thanks in advance. >>> >> Hi Robert, >> >> If you have access to signal generators, I would suggest a very simple >> and easy start : try to add the code to detect pulse like it was done in >> madwifi-dfs (ported to madwifi/trunk BTW). Then, just send few pulses >> and you'll see if you AR9160 based card will detect it. This is how I >> did when writing madwifi-dfs... a long time ago :-). >> >> Maybe 802.11n hardware has some stuff specific to radar detection since >> it probably needs to distinguish between primary& secondary channel. Is >> there someone (Luis?) that can confirm? >> >> Regards, >> Benoit > > And AR9160 definetly supports DFS :-) Because it's a chipset for AP and > routers for 2.4 and 5 GHZ band :-) > See http://www.atheros.com/news/AR9001.htm
DFS requires some software implemented which is not upstream, we are reviewing this possibility now. Luis _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel