1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/gv100_fence.c b/drivers/gpu/drm/nouveau/gv100_fence.c
new file mode 100644
index 000000000000..cccdeca72002
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/gv100_fence.c
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+ */
+#include "nouveau_drv.h"
+#include "nouveau_dma.h"
+#include "nouveau_fence.h"
+
+#include "nv50_display.h"
+
+#include <nvif/push906f.h>
+
+#include <nvhw/class/clc36f.h>
+
+static int
+gv100_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
+{
+	struct nvif_push *push = &chan->chan.push;
+	int ret;
+
+	ret = PUSH_WAIT(push, 8);
+	if (ret)
+		return ret;
+
+	PUSH_MTHD(push, NVC36F, SEM_ADDR_LO, lower_32_bits(virtual),
+				SEM_ADDR_HI, upper_32_bits(virtual),
+				SEM_PAYLOAD_LO, sequence);
+
+	PUSH_MTHD(push, NVC36F, SEM_EXECUTE,
+		  NVDEF(NVC36F, SEM_EXECUTE, OPERATION, RELEASE) |
+		  NVDEF(NVC36F, SEM_EXECUTE, RELEASE_WFI, EN) |
+		  NVDEF(NVC36F, SEM_EXECUTE, PAYLOAD_SIZE, 32BIT) |
+		  NVDEF(NVC36F, SEM_EXECUTE, RELEASE_TIMESTAMP, DIS));
+
+	PUSH_MTHD(push, NVC36F, NON_STALL_INTERRUPT, 0);
+
+	PUSH_KICK(push);
+	return 0;
+}
+
+static int
+gv100_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
+{
+	struct nvif_push *push = &chan->chan.push;
+	int ret;
+
+	ret = PUSH_WAIT(push, 6);
+	if (ret)
+		return ret;
+
+	PUSH_MTHD(push, NVC36F, SEM_ADDR_LO, lower_32_bits(virtual),
+				SEM_ADDR_HI, upper_32_bits(virtual),
+				SEM_PAYLOAD_LO, sequence);
+
+	PUSH_MTHD(push, NVC36F, SEM_EXECUTE,
+		  NVDEF(NVC36F, SEM_EXECUTE, OPERATION, ACQ_CIRC_GEQ) |
+		  NVDEF(NVC36F, SEM_EXECUTE, ACQUIRE_SWITCH_TSG, EN) |
+		  NVDEF(NVC36F, SEM_EXECUTE, PAYLOAD_SIZE, 32BIT));
+
+	PUSH_KICK(push);
+	return 0;
+}
+
+static int
+gv100_fence_context_new(struct nouveau_channel *chan)
+{
+	struct nv84_fence_chan *fctx;
+	int ret;
+
+	ret = nv84_fence_context_new(chan);
+	if (ret)
+		return ret;
+
+	fctx = chan->fence;
+	fctx->base.emit32 = gv100_fence_emit32;
+	fctx->base.sync32 = gv100_fence_sync32;
+	return 0;
+}
+
+int
+gv100_fence_create(struct nouveau_drm *drm)
+{
+	struct nv84_fence_priv *priv;
+	int ret;
+
+	ret = nv84_fence_create(drm);
+	if (ret)
+		return ret;
+
+	priv = drm->fence;
+	priv->base.context_new = gv100_fence_context_new;
+	return 0;
+}