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| author |   Ben Skeggs <bskeggs@redhat.com> | 2017-11-01 03:56:19 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2017-11-02 13:32:20 +1000 |
| commit | e9be3c7d7ae0aa6e273ac5cf66dfd2d53479bdbf (patch) | |
| tree | 5ba0af556252cd34537a9074a47612bcc85ecbd2 /drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c | |
| parent | drm/nouveau/imem: separate pre-BAR2-bootstrap objects from the rest (diff) | |
| download | linux-dev-e9be3c7d7ae0aa6e273ac5cf66dfd2d53479bdbf.tar.xz linux-dev-e9be3c7d7ae0aa6e273ac5cf66dfd2d53479bdbf.zip | |
drm/nouveau/imem: use fast-path for suspend backup
Before: "imem: suspend completed in 5540487us"
After: "imem: suspend completed in 1871526us"
Suspend from Fedora 26 gnome desktop on GP102.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c index 8fc63ec20d6e..d7df7cb6bed3 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c @@ -46,15 +46,20 @@ nvkm_instobj_save(struct nvkm_instobj *iobj) { struct nvkm_memory *memory = &iobj->memory; const u64 size = nvkm_memory_size(memory); + void __iomem *map; int i; iobj->suspend = kvmalloc(size, GFP_KERNEL); if (!iobj->suspend) return -ENOMEM; - for (i = 0; i < size; i += 4) - iobj->suspend[i / 4] = nvkm_ro32(memory, i); - + if (!(map = nvkm_kmap(memory))) { + for (i = 0; i < size; i += 4) + iobj->suspend[i / 4] = nvkm_ro32(memory, i); + } else { + memcpy_fromio(iobj->suspend, map, size); + } + nvkm_done(memory); return 0; } @@ -157,6 +162,8 @@ nvkm_instmem_fini(struct nvkm_subdev *subdev, bool suspend) return ret; } + nvkm_bar_bar2_fini(subdev->device); + list_for_each_entry(iobj, &imem->boot, head) { int ret = nvkm_instobj_save(iobj); if (ret) |