1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvif/chan.h b/drivers/gpu/drm/nouveau/include/nvif/chan.h
new file mode 100644
index 000000000000..c329a29068d5
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvif/chan.h
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+ */
+#ifndef __NVIF_CHAN_H__
+#define __NVIF_CHAN_H__
+#include "push.h"
+
+struct nvif_chan {
+	const struct nvif_chan_func {
+		struct {
+			u32 (*read_get)(struct nvif_chan *);
+		} push;
+
+		struct {
+			u32 (*read_get)(struct nvif_chan *);
+			void (*push)(struct nvif_chan *, bool main, u64 addr, u32 size,
+				     bool no_prefetch);
+			void (*kick)(struct nvif_chan *);
+			int (*post)(struct nvif_chan *, u32 gpptr, u32 pbptr);
+			u32 post_size;
+		} gpfifo;
+
+		struct {
+			int (*release)(struct nvif_chan *, u64 addr, u32 data);
+		} sem;
+	} *func;
+
+	struct {
+		struct nvif_map map;
+	} userd;
+
+	struct {
+		struct nvif_map map;
+		u32 cur;
+		u32 max;
+		int free;
+	} gpfifo;
+
+	struct {
+		struct nvif_map map;
+		u64 addr;
+	} sema;
+
+	struct nvif_push push;
+
+	struct nvif_user *usermode;
+	u32 doorbell_token;
+};
+
+int nvif_chan_dma_wait(struct nvif_chan *, u32 push_nr);
+
+void nvif_chan_gpfifo_ctor(const struct nvif_chan_func *, void *userd, void *gpfifo, u32 gpfifo_size,
+			   void *push, u64 push_addr, u32 push_size, struct nvif_chan *);
+int nvif_chan_gpfifo_wait(struct nvif_chan *, u32 gpfifo_nr, u32 push_nr);
+void nvif_chan_gpfifo_push(struct nvif_chan *, u64 addr, u32 size, bool no_prefetch);
+int nvif_chan_gpfifo_post(struct nvif_chan *);
+
+void nvif_chan506f_gpfifo_push(struct nvif_chan *, bool main, u64 addr, u32 size, bool no_prefetch);
+void nvif_chan506f_gpfifo_kick(struct nvif_chan *);
+
+int nvif_chan906f_ctor_(const struct nvif_chan_func *, void *userd, void *gpfifo, u32 gpfifo_size,
+			void *push, u64 push_addr, u32 push_size, void *sema, u64 sema_addr,
+			struct nvif_chan *);
+u32 nvif_chan906f_read_get(struct nvif_chan *);
+u32 nvif_chan906f_gpfifo_read_get(struct nvif_chan *);
+int nvif_chan906f_gpfifo_post(struct nvif_chan *, u32 gpptr, u32 pbptr);
+
+int nvif_chan506f_ctor(struct nvif_chan *, void *userd, void *gpfifo, u32 gpfifo_size,
+		       void *push, u64 push_addr, u32 push_size);
+int nvif_chan906f_ctor(struct nvif_chan *, void *userd, void *gpfifo, u32 gpfifo_size,
+		       void *push, u64 push_addr, u32 push_size, void *sema, u64 sema_addr);
+int nvif_chanc36f_ctor(struct nvif_chan *, void *userd, void *gpfifo, u32 gpfifo_size,
+		       void *push, u64 push_addr, u32 push_size, void *sema, u64 sema_addr,
+		       struct nvif_user *usermode, u32 doorbell_token);
+#endif