1/* SPDX-License-Identifier: MIT */
 2#ifndef __NVKM_CHAN_H__
 3#define __NVKM_CHAN_H__
 4#include <engine/fifo.h>
 5struct nvkm_dmaobj;
 6struct nvkm_engn;
 7struct nvkm_runl;
 8
 9extern const struct nvkm_event_func nvkm_chan_event;
10
11struct nvkm_cctx {
12	struct nvkm_vctx *vctx;
13	refcount_t refs;
14	refcount_t uses;
15
16	struct list_head head;
17};
18
19struct nvkm_chan_func {
20	int (*id_get)(struct nvkm_chan *, struct nvkm_memory *userd, u64 ouserd);
21	void (*id_put)(struct nvkm_chan *);
22
23	const struct nvkm_chan_func_inst {
24		u32 size;
25		bool zero;
26		bool vmm;
27	} *inst;
28
29	const struct nvkm_chan_func_userd {
30		int bar;
31		u32 base;
32		u32 size;
33		void (*clear)(struct nvkm_chan *);
34	} *userd;
35
36	const struct nvkm_chan_func_ramfc {
37		const struct nvkm_ramfc_layout {
38			unsigned bits:6;
39			unsigned ctxs:5;
40			unsigned ctxp:8;
41			unsigned regs:5;
42			unsigned regp;
43		} *layout;
44		int (*write)(struct nvkm_chan *, u64 offset, u64 length, u32 devm, bool priv);
45		void (*clear)(struct nvkm_chan *);
46		bool ctxdma;
47		u32 devm;
48		bool priv;
49	} *ramfc;
50
51	void (*bind)(struct nvkm_chan *);
52	void (*unbind)(struct nvkm_chan *);
53	void (*start)(struct nvkm_chan *);
54	void (*stop)(struct nvkm_chan *);
55	void (*preempt)(struct nvkm_chan *);
56	u32 (*doorbell_handle)(struct nvkm_chan *);
57};
58
59int nvkm_chan_new_(const struct nvkm_chan_func *, struct nvkm_runl *, int runq, struct nvkm_cgrp *,
60		   const char *name, bool priv, u32 devm, struct nvkm_vmm *, struct nvkm_dmaobj *,
61		   u64 offset, u64 length, struct nvkm_memory *userd, u64 userd_bar1,
62		   struct nvkm_chan **);
63void nvkm_chan_del(struct nvkm_chan **);
64void nvkm_chan_allow(struct nvkm_chan *);
65void nvkm_chan_block(struct nvkm_chan *);
66void nvkm_chan_error(struct nvkm_chan *, bool preempt);
67void nvkm_chan_insert(struct nvkm_chan *);
68void nvkm_chan_remove(struct nvkm_chan *, bool preempt);
69void nvkm_chan_remove_locked(struct nvkm_chan *);
70int nvkm_chan_preempt(struct nvkm_chan *, bool wait);
71int nvkm_chan_preempt_locked(struct nvkm_chan *, bool wait);
72int nvkm_chan_cctx_get(struct nvkm_chan *, struct nvkm_engn *, struct nvkm_cctx **,
73		       struct nvkm_client * /*TODO: remove need for this */);
74void nvkm_chan_cctx_put(struct nvkm_chan *, struct nvkm_cctx **);
75void nvkm_chan_cctx_bind(struct nvkm_chan *, struct nvkm_engn *, struct nvkm_cctx *);
76
77#define CHAN_PRCLI(c,l,p,f,a...) CGRP_PRINT((c)->cgrp, l, p, "%04x:[%s]"f, (c)->id, (c)->name, ##a)
78#define CHAN_PRINT(c,l,p,f,a...) CGRP_PRINT((c)->cgrp, l, p, "%04x:"f, (c)->id, ##a)
79#define CHAN_ERROR(c,f,a...) CHAN_PRCLI((c), ERROR,    err, " "f"\n", ##a)
80#define CHAN_TRACE(c,f,a...) CHAN_PRINT((c), TRACE,   info, " "f"\n", ##a)
81#endif