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

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

Module Name:    src
Committed By:   riastradh
Date:           Sun Apr 24 04:26:12 UTC 2016

Modified Files:
        src/sys/external/bsd/drm2/dist/drm/nouveau: nouveau_bo.c
        src/sys/external/bsd/drm2/dist/drm/radeon: radeon_ttm.c
        src/sys/external/bsd/drm2/dist/drm/ttm: ttm_tt.c
        src/sys/external/bsd/drm2/dist/include/drm/ttm: ttm_bo_driver.h
        src/sys/external/bsd/drm2/include/drm/ttm: ttm_page_alloc.h
        src/sys/external/bsd/drm2/ttm: ttm_bus_dma.c

Log Message:
Rework ttm tt swapin/swapout logic.

Rather than handling `swapping in/out' here, per se, we let uvm do
that, we interpret `swap out' as `deactivate pages', and we add
generic ttm operations to wire and unwire pages, for the ttm_tt
driver to use.

This fixes certain graphics buffer eviction logic, which enables
nouveau to suspend/resume on one of my machines.  (The machine
doesn't resume overall for other reasons, but the nouveau device
suspends and resumes in isolation.)

XXX pullup to netbsd-7 after a couple weeks


To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 \
    src/sys/external/bsd/drm2/dist/drm/nouveau/nouveau_bo.c
cvs rdiff -u -r1.7 -r1.8 \
    src/sys/external/bsd/drm2/dist/drm/radeon/radeon_ttm.c
cvs rdiff -u -r1.6 -r1.7 src/sys/external/bsd/drm2/dist/drm/ttm/ttm_tt.c
cvs rdiff -u -r1.2 -r1.3 \
    src/sys/external/bsd/drm2/dist/include/drm/ttm/ttm_bo_driver.h
cvs rdiff -u -r1.1 -r1.2 \
    src/sys/external/bsd/drm2/include/drm/ttm/ttm_page_alloc.h
cvs rdiff -u -r1.1 -r1.2 src/sys/external/bsd/drm2/ttm/ttm_bus_dma.c

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