A problem was recently posted to the bcm43xx mailing list that I am unable to solve. The machine in question is an HP Mini 2133 (HP product number FU346EA) with a BCM4312 PCIe wireless card. This card is known to work with the b43 driver (I have one.) and it does work on this machine - at least initially. A problem occurs when xdm/kde is started. Suddenly a read operation on device hardware returns all ones as though the register does not exist, or if it were suddenly mismapped. If the OP doesn't try to run xdm, the same problem will eventually occur, it just takes longer. This is a 32-bit system running 2.6.28-rc5, but I don't think this is a regression from some earlier version as the problem was first reported with kernel 2.6.27-gentoo-r2. I have complete logs, but before spamming the list with them, I have a question about the "Zone PFN" settings. On the problem machine, the following list occurs: [ 0.000000] Zone PFN ranges: [ 0.000000] DMA 0x00000000 -> 0x00001000 [ 0.000000] Normal 0x00001000 -> 0x000373fe [ 0.000000] HighMem 0x000373fe -> 0x0006feb0 On my 64-bit HP machine, I see: Zone PFN ranges: DMA 0x00000000 -> 0x00001000 DMA32 0x00001000 -> 0x00100000 Normal 0x00100000 -> 0x00100000 Is it "normal" for there not to be a DMA32 range with a 32-bit version of Linux? Certainly all the memory is available to 32-bit DMA. This card does 64-bit DMA, but the driver falls back to a 32-bit mask for this system. Is there some kind of memory mapping problem in the PCIe system? Should the entire log be posted? Thanks, Larry -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
