Commit 14f0458a authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nvc0/copy: check PUNITS to determine which copy engines are disabled

On some Fermi chipsets (NVCE particularly) PCOPY1 doesn't exist.  And if
what I've seen on Kepler is true of Fermi too, chipsets of the same type
can have different PCOPY units available.

This should fix a v3.5 regression reported by a number of people effecting
suspend/resume on NVC8/NVCE chipsets.

Cc: [3.5]
Signed-off-by: default avatarBen Skeggs <>
parent 2064db72
......@@ -736,9 +736,11 @@ nouveau_card_init(struct drm_device *dev)
case NV_C0:
nvc0_copy_create(dev, 1);
if (!(nv_rd32(dev, 0x022500) & 0x00000200))
nvc0_copy_create(dev, 1);
case NV_D0:
nvc0_copy_create(dev, 0);
if (!(nv_rd32(dev, 0x022500) & 0x00000100))
nvc0_copy_create(dev, 0);
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