drm/nvc0/fifo: kick channels off during suspend
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvc0_fifo.c b/drivers/gpu/drm/nouveau/nvc0_fifo.c
index 55a4245..2bd0511 100644
--- a/drivers/gpu/drm/nouveau/nvc0_fifo.c
+++ b/drivers/gpu/drm/nouveau/nvc0_fifo.c
@@ -240,6 +240,22 @@
int
nvc0_fifo_unload_context(struct drm_device *dev)
{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ int i;
+
+ for (i = 0; i < 128; i++) {
+ if (!(nv_rd32(dev, 0x003004 + (i * 4)) & 1))
+ continue;
+
+ nv_mask(dev, 0x003004 + (i * 4), 0x00000001, 0x00000000);
+ nv_wr32(dev, 0x002634, i);
+ if (!nv_wait(dev, 0x002634, 0xffffffff, i)) {
+ NV_INFO(dev, "PFIFO: kick ch %d failed: 0x%08x\n",
+ i, nv_rd32(dev, 0x002634));
+ return -EBUSY;
+ }
+ }
+
return 0;
}