/* SPDX-License-Identifier: MIT */
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#ifndef __NVKM_FALCON_QMGR_H__
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#define __NVKM_FALCON_QMGR_H__
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#include <core/falcon.h>
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#define HDR_SIZE sizeof(struct nvfw_falcon_msg)
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#define QUEUE_ALIGNMENT 4
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/* max size of the messages we can receive */
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#define MSG_BUF_SIZE 128
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/**
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* struct nvkm_falcon_qmgr_seq - keep track of ongoing commands
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*
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* Every time a command is sent, a sequence is assigned to it so the
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* corresponding message can be matched. Upon receiving the message, a callback
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* can be called and/or a completion signaled.
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*
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* @id: sequence ID
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* @state: current state
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* @callback: callback to call upon receiving matching message
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* @completion: completion to signal after callback is called
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*/
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struct nvkm_falcon_qmgr_seq {
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u16 id;
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enum {
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SEQ_STATE_FREE = 0,
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SEQ_STATE_PENDING,
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SEQ_STATE_USED,
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SEQ_STATE_CANCELLED
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} state;
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bool async;
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nvkm_falcon_qmgr_callback callback;
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void *priv;
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struct completion done;
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int result;
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};
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/*
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* We can have an arbitrary number of sequences, but realistically we will
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* probably not use that much simultaneously.
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*/
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#define NVKM_FALCON_QMGR_SEQ_NUM 16
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struct nvkm_falcon_qmgr {
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struct nvkm_falcon *falcon;
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struct {
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struct mutex mutex;
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struct nvkm_falcon_qmgr_seq id[NVKM_FALCON_QMGR_SEQ_NUM];
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unsigned long tbl[BITS_TO_LONGS(NVKM_FALCON_QMGR_SEQ_NUM)];
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} seq;
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};
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struct nvkm_falcon_qmgr_seq *
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nvkm_falcon_qmgr_seq_acquire(struct nvkm_falcon_qmgr *);
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void nvkm_falcon_qmgr_seq_release(struct nvkm_falcon_qmgr *,
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struct nvkm_falcon_qmgr_seq *);
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struct nvkm_falcon_cmdq {
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struct nvkm_falcon_qmgr *qmgr;
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const char *name;
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struct mutex mutex;
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struct completion ready;
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u32 head_reg;
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u32 tail_reg;
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u32 offset;
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u32 size;
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u32 position;
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};
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struct nvkm_falcon_msgq {
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struct nvkm_falcon_qmgr *qmgr;
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const char *name;
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struct mutex mutex;
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u32 head_reg;
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u32 tail_reg;
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u32 offset;
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u32 position;
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};
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#define FLCNQ_PRINTK(t,q,f,a...) \
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FLCN_PRINTK(t, (q)->qmgr->falcon, "%s: "f, (q)->name, ##a)
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#define FLCNQ_DBG(q,f,a...) FLCNQ_PRINTK(debug, (q), f, ##a)
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#define FLCNQ_ERR(q,f,a...) FLCNQ_PRINTK(error, (q), f, ##a)
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#endif
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