W dniu 19 lipca 2011 01:32 użytkownik Rafał Miłecki <[email protected]> napisał: > W dniu 18 lipca 2011 22:29 użytkownik Larry Finger > <[email protected]> napisał: >> On 07/18/2011 03:14 PM, Rafał Miłecki wrote: >>> >>> When using DMA on one of my BCM4321s and BCM43224 or BCM43225 I don't >>> get a single RX IRQ. >>> >>> Doing scanning requests sends TX packets to the hardware, and the >>> ucode generates IRQs for confirming transmitted packets. RX does not >>> seem to work however. I expected to see "native" beacons, or response >>> to the scanning request. >>> >>> Do you have idea what may be wrong, where should I look at? So far >>> I've discovered (from looking at MMIO dumps) that: >>> 1) wl uses 38 as B43_DMA0_RX_FRAMEOFFSET (instead of our 30) >>> 2) wl enables channel with 0x801, not just 0x1 (specs say 0x800 is >>> Parity Disable - Not on all units) >>> >>> I've implemented both changes in b43, it didn't help. >> >> Does your MMIO dump from wl show the setup of the RX ring and the RX >> descriptors? There might be something special there. >> >> What are the differences between the BCM4321 that works, and the one that >> doesn't? That might provide a clue for me to check in the reference driver. > > Larry, for now, can you check: > > 1) When wl does set parity (0x800) bit > 2) Does newer wl always use 38 offset for RX header?
After adding routing (translation) address, using parity bit (0x800) and cold booting, DMA seems to work =) -- Rafał _______________________________________________ b43-dev mailing list [email protected] http://lists.infradead.org/mailman/listinfo/b43-dev
