Commit b9f327f1 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau/mmu/gp100-: enable mmu invalidate depth optimisation 



This causes us to invalidate MMU only at the level we made modifications -
ie: if we've only modified PTEs, there's no need to have MMU dump the PDs
it's fetched into L2.

Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent b448a266

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c

+0 −1
Original line number Diff line number Diff line
@@ -466,7 +466,6 @@ void 
gp100_vmm_flush(struct nvkm_vmm *vmm, int depth)

{

	u32 type = (5 /* CACHE_LEVEL_UP_TO_PDE3 */ - depth) << 24;

	type = 0; /*XXX: need to confirm stuff works with depth enabled... */

	if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))

		type |= 0x00000004; /* HUB_ONLY */

	type |= 0x00000001; /* PAGE_ALL */

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c

+2 −2
Original line number Diff line number Diff line
@@ -28,9 +28,9 @@ tu102_vmm_flush(struct nvkm_vmm *vmm, int depth) 
{

	struct nvkm_subdev *subdev = &vmm->mmu->subdev;

	struct nvkm_device *device = subdev->device;

	u32 type = depth << 24; /*XXX: not confirmed */

	u32 type = (5 /* CACHE_LEVEL_UP_TO_PDE3 */ - depth) << 24;



	type = 0x00000001; /* PAGE_ALL */

	type |= 0x00000001; /* PAGE_ALL */

	if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))

		type |= 0x00000004; /* HUB_ONLY */