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| author | Miod Vallat <miod@cvs.openbsd.org> | 2015-09-05 21:13:25 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2015-09-05 21:13:25 +0000 |
| commit | 0d014dea44612316aed2ff47e882601e7a05e885 (patch) | |
| tree | dd6fa1fbfec72ec60d03772d83afc6229b45098b /sys/stand/boot/cmd.h | |
| parent | 5d914cb37ea64db77ffb8fbd644c576e9880def6 (diff) | |
Give up trying to map DMA descriptor in uncached memory on ECC flavours of the
IP22 motherboard (IP26, IP28). Instead, do not ask for a BUS_DMA_COHERENT
mapping, but perform explicit cache operations.
This removes the need for the memory controller to switch between `fast' and
`slow' mode every time a DMA descriptor is updated.
Tested on IP22 and IP28.
Diffstat (limited to 'sys/stand/boot/cmd.h')
0 files changed, 0 insertions, 0 deletions