Hi, I am trying to get the BCM4331 working on the BCM4706 (Mips SoC), on a x86 this is working. Currently the bcma bus gets initialized without any problems and b43 starts and send beacons like excepted. When a client wants to connect to the Access point the whole system breaks. On the DMA core 1, which is used to send the packages I get a Fatal DMA error: b43-phy0 ERROR: Fatal DMA error: 0x00000000, 0x00000800, 0x00000000, 0x00000000, 0x00000000, 0x00000000 After this error the driver tries to recover, by reseting the DMA controller, but that fails: b43-phy0: Controller RESET (DMA error) ... bcma: bus1: Timeout waiting for register 0x0804! Data bus error, epc == 801ac888, ra == 801ac890 This is descried in [0] as PCIData (PD) PCI Data Error This field is set to 1 when a PCI bus error occurs while transferring data to or from host memory. The PCI status register (see “Status Register (Status, offset 0x06)” on page 184) can be read to determine the cause of the error. This field is cleared to 0 by resetting the channel that caused the error. I can not find the description of the PCI status register. I used wireshark to see what actually happens and the device send out beacons and answers to probe requests without problems. I see the Authentication, Association Request and Association Response frames and then only Beacon frames and probe responses. When I do not try to connect to this access Point there is no problem and the device stays up for a long time, the problem is caused by the frames send or received. I think this is a problem in the DMA controller or in the PCIe host controller, sadly I do not have a BCM4706 SoC with a pluggable PCIe slot to verify which part causes the problems (the card, or the PCIe controller). Does anybody have any thought on this topic? Hauke [0]: http://www.broadcom.com/collateral/pg/440X-PG02-R.pdf -- 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
