diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/ga100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/ga100.c
index 842326a24393..1e2eabec1a76 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/ga100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/ga100.c
@@ -21,11 +21,52 @@
  */
 #include "priv.h"
 
+static void
+ga100_mc_device_disable(struct nvkm_mc *mc, u32 mask)
+{
+	struct nvkm_device *device = mc->subdev.device;
+
+	nvkm_mask(device, 0x000600, mask, 0x00000000);
+	nvkm_rd32(device, 0x000600);
+	nvkm_rd32(device, 0x000600);
+}
+
+static void
+ga100_mc_device_enable(struct nvkm_mc *mc, u32 mask)
+{
+	struct nvkm_device *device = mc->subdev.device;
+
+	nvkm_mask(device, 0x000600, mask, mask);
+	nvkm_rd32(device, 0x000600);
+	nvkm_rd32(device, 0x000600);
+}
+
+static bool
+ga100_mc_device_enabled(struct nvkm_mc *mc, u32 mask)
+{
+	return (nvkm_rd32(mc->subdev.device, 0x000600) & mask) == mask;
+}
+
+const struct nvkm_mc_device_func
+ga100_mc_device = {
+	.enabled = ga100_mc_device_enabled,
+	.enable = ga100_mc_device_enable,
+	.disable = ga100_mc_device_disable,
+};
+
+static void
+ga100_mc_init(struct nvkm_mc *mc)
+{
+	struct nvkm_device *device = mc->subdev.device;
+
+	nvkm_wr32(device, 0x000200, 0xffffffff);
+	nvkm_wr32(device, 0x000600, 0xffffffff);
+}
+
 static const struct nvkm_mc_func
 ga100_mc = {
-	.init = nv50_mc_init,
-	.device = &nv04_mc_device,
-	.reset = gk104_mc_reset,
+	.init = ga100_mc_init,
+	.device = &ga100_mc_device,
 };
 
 int