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drm/nvc0/fifo: attempt to recover from engine ctxsw timeouts

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My test cases don't seem to trigger this on all Fermi boards, not sure
if they're broken tests or it didn't work until later versions.

GF119 definitely works.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-02-22 12:44:23 +10:00
parent 24e8341e4c
commit 61fdf62093
1 changed files with 34 additions and 0 deletions
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34
drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c
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@ -480,6 +480,32 @@ nvc0_fifo_sched_reason[] = {
{}
};
static void
nvc0_fifo_intr_sched_ctxsw(struct nvc0_fifo_priv *priv)
{
struct nouveau_engine *engine;
struct nvc0_fifo_chan *chan;
u32 engn;
for (engn = 0; engn < 6; engn++) {
u32 stat = nv_rd32(priv, 0x002640 + (engn * 0x04));
u32 busy = (stat & 0x80000000);
u32 save = (stat & 0x00100000); /* maybe? */
u32 unk0 = (stat & 0x00040000);
u32 unk1 = (stat & 0x00001000);
u32 chid = (stat & 0x0000007f);
(void)save;
if (busy && unk0 && unk1) {
if (!(chan = (void *)priv->base.channel[chid]))
continue;
if (!(engine = nvc0_fifo_engine(priv, engn)))
continue;
nvc0_fifo_recover(priv, engine, chan);
}
}
}
static void
nvc0_fifo_intr_sched(struct nvc0_fifo_priv *priv)
{
@ -493,6 +519,14 @@ nvc0_fifo_intr_sched(struct nvc0_fifo_priv *priv)
snprintf(enunk, sizeof(enunk), "UNK%02x", code);
nv_error(priv, "SCHED_ERROR [ %s ]\n", en ? en->name : enunk);
switch (code) {
case 0x0a:
nvc0_fifo_intr_sched_ctxsw(priv);
break;
default:
break;
}
}
static const struct nouveau_enum