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 73d52df8f2be..c612275c36c9 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -86,10 +86,14 @@ 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 @@ -100,15 +104,16 @@ i915_ttm_placement_from_obj(const struct drm_i915_gem_object *obj, { unsigned int i; unsigned int num_allowed = obj->mm.n_placements; + unsigned int flags = obj->flags;
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;