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