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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#endif82