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| author | Ben Skeggs <bskeggs@redhat.com> | 2020-06-10 14:46:01 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2020-07-24 18:50:47 +1000 |
| commit | b9f327f1afc7c061233adf585736857d20c6ac06 (patch) | |
| tree | 541ce61dd2c2e22969f5c9e3216c0165777cc79f /drivers/gpu/drm/nouveau/nvkm/subdev | |
| parent | b448a266cc4a2a960a65108a4a36d36c17cd74b2 (diff) | |
| download | linux-b9f327f1afc7c061233adf585736857d20c6ac06.tar.gz | |
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: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c | 4 |
2 files changed, 2 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c index d86287565542..97520e9721c9 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c @@ -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 */ diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c index be91cffc3b52..b1294d0076c0 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c @@ -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 */ |