Currently we just ignore the I915_BO_ALLOC_CONTIGUOUS flag, which is fine since everything is already contiguous with the ttm range manager. However in the next patch we want to switch over to the ttm buddy manager, where allocations are by default not contiguous.
v2(Thomas): - Forward ALLOC_CONTIG for all regions
Signed-off-by: Matthew Auld matthew.auld@intel.com Cc: Thomas Hellström thomas.hellstrom@linux.intel.com Reviewed-by: Thomas Hellström thomas.hellstrom@linux.intel.com --- drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c index d7595688e182..90d342e3df24 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -79,10 +79,14 @@ i915_ttm_select_tt_caching(const struct drm_i915_gem_object *obj)
static void i915_ttm_place_from_region(const struct intel_memory_region *mr, - struct ttm_place *place) + struct ttm_place *place, + unsigned int flags) { memset(place, 0, sizeof(*place)); place->mem_type = intel_region_to_ttm_type(mr); + + if (flags & I915_BO_ALLOC_CONTIGUOUS) + place->flags = TTM_PL_FLAG_CONTIGUOUS; }
static void @@ -92,16 +96,17 @@ i915_ttm_placement_from_obj(const struct drm_i915_gem_object *obj, struct ttm_placement *placement) { unsigned int num_allowed = obj->mm.n_placements; + unsigned int flags = obj->flags; unsigned int i;
placement->num_placement = 1; i915_ttm_place_from_region(num_allowed ? obj->mm.placements[0] : - obj->mm.region, requested); + obj->mm.region, requested, flags);
/* Cache this on object? */ placement->num_busy_placement = num_allowed; for (i = 0; i < placement->num_busy_placement; ++i) - i915_ttm_place_from_region(obj->mm.placements[i], busy + i); + i915_ttm_place_from_region(obj->mm.placements[i], busy + i, flags);
if (num_allowed == 0) { *busy = *requested;