Bring GEM code up to current standards and untangle the connection to GTT helpers.
The allocation and pinning helpers for struct gtt_range are located in the GTT code, but actually part of the GEM implementation. The patchset moves them to GEM code and refactors much of the implementation. Most of the GTT code is then independend from the struct gtt_range, while the GEM code does not contain GTT management.
In addition to internal refiactoring, patches 2 to 4 update the rest of the driver to use the GEM interfaces for object allocation and release.
Finally, rename struct gtt_range to struct psb_gem_object to designate it as a 'real' GEM object.
Future work: with the GEM and GTT code separated, future patchsets can implement on-demand release of GTT entries, or remove the perma-mapping of stolen memory. Dma-buf support might also be added.
Tested on Atom N2800 hardware.
v2: * keep docs about GTT locking * release mutex in pin error path
Thomas Zimmermann (10): drm/gma500: Move helpers for struct gtt_range from gtt.c to gem.c drm/gma500: Use to_gtt_range() everywhere drm/gma500: Reimplement psb_gem_create() drm/gma500: Allocate GTT ranges in stolen memory with psb_gem_create() drm/gma500: Rename psb_gtt_{pin,unpin}() to psb_gem_{pin,unpin}() drm/gma500: Inline psb_gtt_attach_pages() and psb_gtt_detach_pages() drm/gma500: Inline psb_gtt_{alloc,free}_range() into rsp callers drm/gma500: Set page-caching flags in GEM pin/unpin drm/gma500: Rewrite GTT page insert/remove without struct gtt_range drm/gma500: Rename struct gtt_range to struct psb_gem_object
drivers/gpu/drm/gma500/framebuffer.c | 52 +--- drivers/gpu/drm/gma500/gem.c | 234 +++++++++++---- drivers/gpu/drm/gma500/gem.h | 28 +- drivers/gpu/drm/gma500/gma_display.c | 51 ++-- drivers/gpu/drm/gma500/gtt.c | 320 ++++----------------- drivers/gpu/drm/gma500/gtt.h | 29 +- drivers/gpu/drm/gma500/oaktrail_crtc.c | 3 +- drivers/gpu/drm/gma500/psb_intel_display.c | 17 +- drivers/gpu/drm/gma500/psb_intel_drv.h | 2 +- 9 files changed, 317 insertions(+), 419 deletions(-)
-- 2.33.0