1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.h
new file mode 100644
index 000000000..85b94f699
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_CHAN_H__
+#define __NVKM_CHAN_H__
+#include <engine/fifo.h>
+struct nvkm_dmaobj;
+struct nvkm_engn;
+struct nvkm_runl;
+
+extern const struct nvkm_event_func nvkm_chan_event;
+
+struct nvkm_cctx {
+	struct nvkm_vctx *vctx;
+	refcount_t refs;
+	refcount_t uses;
+
+	struct list_head head;
+};
+
+struct nvkm_chan_func {
+	const struct nvkm_chan_func_inst {
+		u32 size;
+		bool zero;
+		bool vmm;
+	} *inst;
+
+	const struct nvkm_chan_func_userd {
+		int bar;
+		u32 base;
+		u32 size;
+		void (*clear)(struct nvkm_chan *);
+	} *userd;
+
+	const struct nvkm_chan_func_ramfc {
+		const struct nvkm_ramfc_layout {
+			unsigned bits:6;
+			unsigned ctxs:5;
+			unsigned ctxp:8;
+			unsigned regs:5;
+			unsigned regp;
+		} *layout;
+		int (*write)(struct nvkm_chan *, u64 offset, u64 length, u32 devm, bool priv);
+		void (*clear)(struct nvkm_chan *);
+		bool ctxdma;
+		u32 devm;
+		bool priv;
+	} *ramfc;
+
+	void (*bind)(struct nvkm_chan *);
+	void (*unbind)(struct nvkm_chan *);
+	void (*start)(struct nvkm_chan *);
+	void (*stop)(struct nvkm_chan *);
+	void (*preempt)(struct nvkm_chan *);
+	u32 (*doorbell_handle)(struct nvkm_chan *);
+};
+
+int nvkm_chan_new_(const struct nvkm_chan_func *, struct nvkm_runl *, int runq, struct nvkm_cgrp *,
+		   const char *name, bool priv, u32 devm, struct nvkm_vmm *, struct nvkm_dmaobj *,
+		   u64 offset, u64 length, struct nvkm_memory *userd, u64 userd_bar1,
+		   struct nvkm_chan **);
+void nvkm_chan_del(struct nvkm_chan **);
+void nvkm_chan_allow(struct nvkm_chan *);
+void nvkm_chan_block(struct nvkm_chan *);
+void nvkm_chan_error(struct nvkm_chan *, bool preempt);
+void nvkm_chan_insert(struct nvkm_chan *);
+void nvkm_chan_remove(struct nvkm_chan *, bool preempt);
+void nvkm_chan_remove_locked(struct nvkm_chan *);
+int nvkm_chan_preempt(struct nvkm_chan *, bool wait);
+int nvkm_chan_preempt_locked(struct nvkm_chan *, bool wait);
+int nvkm_chan_cctx_get(struct nvkm_chan *, struct nvkm_engn *, struct nvkm_cctx **,
+		       struct nvkm_client * /*TODO: remove need for this */);
+void nvkm_chan_cctx_put(struct nvkm_chan *, struct nvkm_cctx **);
+void nvkm_chan_cctx_bind(struct nvkm_chan *, struct nvkm_engn *, struct nvkm_cctx *);
+
+#define CHAN_PRCLI(c,l,p,f,a...) CGRP_PRINT((c)->cgrp, l, p, "%04x:[%s]"f, (c)->id, (c)->name, ##a)
+#define CHAN_PRINT(c,l,p,f,a...) CGRP_PRINT((c)->cgrp, l, p, "%04x:"f, (c)->id, ##a)
+#define CHAN_ERROR(c,f,a...) CHAN_PRCLI((c), ERROR,    err, " "f"\n", ##a)
+#define CHAN_TRACE(c,f,a...) CHAN_PRINT((c), TRACE,   info, " "f"\n", ##a)
+#endif