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| /freebsd-11-stable/sys/dev/ath/ath_hal/ | ||
| H A D | ah_internal.h | diff 218436 Tue Feb 08 10:57:44 MST 2011 adrian There's apparently a bug with Merlin (AR9280) and later chipsets where putting descriptors (not buffers) across a 4k page boundary can cause issues. I've not seen it in production myself but it apparently can cause problems. So, in preparation for addressing this workaround, (re)-expose the particular HAL capability bit which marks whether the chipset has support for cross-4k- boundary transactions or not. A subsequent commit will modify the descriptor allocation to avoid allocating descriptor entries that straddle a 4k page boundary. |
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