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CVS commit: src/sys/external/bsd/drm2/include/linux

Module Name:    src
Committed By:   riastradh
Date:           Thu Aug 28 13:45:59 UTC 2014

Modified Files:
        src/sys/external/bsd/drm2/include/linux: io-mapping.h

Log Message:
Make Linux io_mapping actually work.

Can't use bus_space_map/bus_space_unmap in interrupt context, where
Linux uses this io_mapping abstraction.  Instead, do uvm_km_alloc up
front and then use bus_space_mmap/pmap_kenter_pa to map it.

XXX Should bus_space_reserve the region (but that's x86-only for now).
XXX Should use direct map if possible.
XXX Should set an MTRR WC too in case of direct map or no PAT.

To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sys/external/bsd/drm2/include/linux/io-mapping.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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