drm/nvc0/gr: fix gpc firmware regression

"drm/nve0-/gr: some new gpc registers can have multiple copies"
5ee86c4190f9e caused a regression for nvc0, because the bit indicating last
transfer has occured was no longer set, resulting in random system lockups.

Reported-by: Ronald Uitermark <ronald645@gmail.com>
Tested-by: Ronald Uitermark <ronald645@gmail.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

2 files changed, 23 insertions, 20 deletions

diff --git a/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpc.fuc b/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpc.fuc
index b52f4a8b8699..5547c1b3f4f2 100644
--- a/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpc.fuc
+++ b/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpc.fuc
@@ -352,6 +352,9 @@ ctx_xfer:
 
         // per-TPC mmio context
         xbit $r10 $flags $p1    // direction
+#if !NV_PGRAPH_GPCX_UNK__SIZE
+        or $r10 4               // last
+#endif
         mov $r11 0x4000
         sethi $r11 0x500000     // base = NV_PGRAPH_GPC0_TPC0
         ld b32 $r12 D[$r0 + #gpc_id]
diff --git a/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpcnvc0.fuc.h b/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpcnvc0.fuc.h
index 2afe75ce89e9..f2b0dea80116 100644
--- a/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpcnvc0.fuc.h
+++ b/drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpcnvc0.fuc.h
@@ -400,26 +400,26 @@ uint32_t nvc0_grgpc_code[] = {
         0x0d98000c,
         0x00e7f001,
         0x016621f5,
-        0xf101acf0,
-        0xf04000b7,
-        0x0c9850b3,
-        0x0fc4b604,
-        0x9800bcbb,
-        0x0d98010c,
-        0x060f9802,
-        0x0800e7f1,
-        0x016621f5,
-        0x021521f5,
-        0xf40601f4,
-/* 0x0532: ctx_xfer_post */
-        0x17f11412,
-        0x13f04afc,
-        0x0d27f002,
-        0xf50012d0,
-/* 0x0543: ctx_xfer_done */
-        0xf5021521,
-        0xf8047921,
-        0x00000000,
+        0xf001acf0,
+        0xb7f104a5,
+        0xb3f04000,
+        0x040c9850,
+        0xbb0fc4b6,
+        0x0c9800bc,
+        0x020d9801,
+        0xf1060f98,
+        0xf50800e7,
+        0xf5016621,
+        0xf4021521,
+        0x12f40601,
+/* 0x0535: ctx_xfer_post */
+        0xfc17f114,
+        0x0213f04a,
+        0xd00d27f0,
+        0x21f50012,
+/* 0x0546: ctx_xfer_done */
+        0x21f50215,
+        0x00f80479,
         0x00000000,
         0x00000000,
         0x00000000,