Allow fecs to potentially set both methods:
- 0x38 STOP_CTXSW
- 0x39 START_CTXSW
At present the code only ever starts context swap, and never pauses it
as appears to be the intent of one caller of gf100_gr_fecs_ctrl_ctxs().
Cc: Ben Skeggs <bskeggs@xxxxxxxxxx>
Fixes: 2642e0b5 ("gr/gf100-: expose fecs methods for pausing ctxsw")
Signed-off-by: Rhys Kidd <rhyskidd@xxxxxxxxx>
---
Ben, I wrote this patch against the commit in https://github.com/skeggsb/nouveau/
Whilst I haven't seen 2642e0b5 from your "nouveau-next" repo merged into
drm-next yet, if that occurs this patch will also need to be tracked into
drm-next in order for the fix to make it into Linux 5.1.
Would you like me to write that patch as well?
drm/nouveau/nvkm/engine/gr/gf100.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drm/nouveau/nvkm/engine/gr/gf100.c b/drm/nouveau/nvkm/engine/gr/gf100.c
index 5beb683a..81a13cf9 100644
--- a/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -729,7 +729,7 @@ gf100_gr_fecs_ctrl_ctxsw(struct gf100_gr *gr, u32 mthd)
nvkm_wr32(device, 0x409804, 0xffffffff);
nvkm_wr32(device, 0x409840, 0xffffffff);
nvkm_wr32(device, 0x409500, 0xffffffff);
- nvkm_wr32(device, 0x409504, 0x00000039);
+ nvkm_wr32(device, 0x409504, mthd);
nvkm_msec(device, 2000,
u32 stat = nvkm_rd32(device, 0x409804);
if (stat == 0x00000002)
--
2.19.1
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