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

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Mon Aug 27 15:32:06 UTC 2018

Modified Files:
        src/sys/external/bsd/drm2/dist/include/drm: drmP.h
        src/sys/external/bsd/drm2/drm: drm_memory.c
        src/sys/external/bsd/drm2/pci: drm_pci.c

Log Message:
Tread carefully around DMA subregions.

Not all platforms support it.

- If we want to limit to 32-bit DMA, just use a known 32-bit DMA tag.
- If we want to limit to >32-bit DMA, but the host only has a known
  32-bit DMA tag, then just use that anyway.
- If we want to limit to >32-bit DMA, but the host doesn't support
  bus_dmatag_subregion, then just use the 32-bit DMA tag anyway.

Gives powerpc, sparc a chance of working.


To generate a diff of this commit:
cvs rdiff -u -r1.30 -r1.31 src/sys/external/bsd/drm2/dist/include/drm/drmP.h
cvs rdiff -u -r1.12 -r1.13 src/sys/external/bsd/drm2/drm/drm_memory.c
cvs rdiff -u -r1.28 -r1.29 src/sys/external/bsd/drm2/pci/drm_pci.c

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