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drm/nv17-50: restore fence buffer on resume 

Since commit 5e120f6e4b "drm/nouveau/fence:
convert to exec engine, and improve channel sync" nouveau fence sync
implementation for nv17-50 and nvc0+ started to rely on state of fence buffer
left by previous sync operation. But as pinned bo's (where fence state is
stored) are not saved+restored across suspend/resume, we need to do it
manually.

nvc0+ was fixed by commit d6ba6d215a
"drm/nvc0/fence: restore pre-suspend fence buffer context on resume".

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=50121

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Marcin Slusarz 2012-12-25 18:13:22 +01:00 committed by Ben Skeggs
parent 92441b2263
commit f20ebd034e
3 changed files with 10 additions and 0 deletions
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1
drivers/gpu/drm/nouveau/nouveau_fence.h
View File

@ -60,6 +60,7 @@ u32 nv10_fence_read(struct nouveau_channel *);
void nv10_fence_context_del(struct nouveau_channel *);
void nv10_fence_destroy(struct nouveau_drm *);
int nv10_fence_create(struct nouveau_drm *);
void nv17_fence_resume(struct nouveau_drm *drm);
int nv50_fence_create(struct nouveau_drm *);
int nv84_fence_create(struct nouveau_drm *);

8
drivers/gpu/drm/nouveau/nv10_fence.c
View File

@ -162,6 +162,13 @@ nv10_fence_destroy(struct nouveau_drm *drm)
kfree(priv);
}
void nv17_fence_resume(struct nouveau_drm *drm)
{
struct nv10_fence_priv *priv = drm->fence;
nouveau_bo_wr32(priv->bo, 0, priv->sequence);
}
int
nv10_fence_create(struct nouveau_drm *drm)
{
@ -197,6 +204,7 @@ nv10_fence_create(struct nouveau_drm *drm)
if (ret == 0) {
nouveau_bo_wr32(priv->bo, 0x000, 0x00000000);
priv->base.sync = nv17_fence_sync;
priv->base.resume = nv17_fence_resume;
}
}

1
drivers/gpu/drm/nouveau/nv50_fence.c
View File

@ -122,6 +122,7 @@ nv50_fence_create(struct nouveau_drm *drm)
if (ret == 0) {
nouveau_bo_wr32(priv->bo, 0x000, 0x00000000);
priv->base.sync = nv17_fence_sync;
priv->base.resume = nv17_fence_resume;
}
if (ret)