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drm/nvc0/gr: fix TP init for transform feedback offset queries 

Without this, they return bytes written since the last update of
the offset, but we want the full offset.

Trace shows setting this on GPC[0]/TP[0] is enough.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
hifive-unleashed-5.1
Christoph Bumiller 2011-11-11 20:47:58 +01:00 committed by Ben Skeggs
parent 33dbc27f1a
commit ffe2dee490
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/nouveau/nvc0_graph.c
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@ -381,6 +381,8 @@ nvc0_graph_init_gpc_0(struct drm_device *dev)
u8 tpnr[GPC_MAX];
int i, gpc, tpc;
nv_wr32(dev, TP_UNIT(0, 0, 0x5c), 1); /* affects TFB offset queries */
/*
* TP ROP UNKVAL(magic_not_rop_nr)
* 450: 4/0/0/0 2 3