Seems like you need a SRU [0] for
commit 4c374af5fdee4bc6b4f5ea96c1a0f0ad7d3566be
Author: Aaro Koskinen <aaro.koski...@iki.fi>
Date: Sat Aug 18 07:34:15 2012 +0000
powerpc/dma-iommu: Fix IOMMU window check
Checking for device mask to cover the whole IOMMU table is too strict.
IOMMU allocators should handle mask constraint properly for each
allocation.
The patch enables to use old AirPort Extreme cards on PowerMacs with
more than 1GB of memory; without the patch the driver init fails with:
b43-pci-bridge 0001:01:01.0: Warning: IOMMU window too big for device mask
b43-pci-bridge 0001:01:01.0: mask: 0x3fffffff, table end: 0x80000000
b43-phy0 ERROR: The machine/kernel does not support the required 30-bit
DMA mask
$ git describe --contains 4c374af5fdee4bc6b4f5ea96c1a0f0ad7d3566be
v3.6-rc4~13^2~5
[0] https://wiki.ubuntu.com/StableReleaseUpdates#Kernel
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https://bugs.launchpad.net/bugs/1219368
Title:
14e4:4320 Airport Extreme (Broadcom BCM4306) not working on iMac G5
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