From 61fdf6209350d6d5c5b2472c4b9e242e98ca3680 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Sat, 22 Feb 2014 12:44:23 +1000 Subject: [PATCH] drm/nvc0/fifo: attempt to recover from engine ctxsw timeouts 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 --- .../gpu/drm/nouveau/core/engine/fifo/nvc0.c | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c index 358926bc7375..fa1e719872b7 100644 --- a/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c @@ -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