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/* SPDX-License-Identifier: MIT */
#ifndef __NVKM_FALCON_QMGR_H__
#define __NVKM_FALCON_QMGR_H__
#include <core/falcon.h>
#define HDR_SIZE sizeof(struct nvfw_falcon_msg)
#define QUEUE_ALIGNMENT 4
/* max size of the messages we can receive */
#define MSG_BUF_SIZE 128
/**
* struct nvkm_falcon_qmgr_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_falcon_qmgr_seq {
u16 id;
enum {
SEQ_STATE_FREE = 0,
SEQ_STATE_PENDING,
SEQ_STATE_USED,
SEQ_STATE_CANCELLED
} state;
bool async;
nvkm_falcon_qmgr_callback callback;
void *priv;
struct completion done;
int result;
};
/*
* We can have an arbitrary number of sequences, but realistically we will
* probably not use that much simultaneously.
*/
#define NVKM_FALCON_QMGR_SEQ_NUM 16
struct nvkm_falcon_qmgr {
struct nvkm_falcon *falcon;
struct {
struct mutex mutex;
struct nvkm_falcon_qmgr_seq id[NVKM_FALCON_QMGR_SEQ_NUM];
unsigned long tbl[BITS_TO_LONGS(NVKM_FALCON_QMGR_SEQ_NUM)];
} seq;
};
struct nvkm_falcon_qmgr_seq *
nvkm_falcon_qmgr_seq_acquire(struct nvkm_falcon_qmgr *);
void nvkm_falcon_qmgr_seq_release(struct nvkm_falcon_qmgr *,
struct nvkm_falcon_qmgr_seq *);
struct nvkm_falcon_cmdq {
struct nvkm_falcon_qmgr *qmgr;
const char *name;
struct mutex mutex;
struct completion ready;
u32 head_reg;
u32 tail_reg;
u32 offset;
u32 size;
u32 position;
};
struct nvkm_falcon_msgq {
struct nvkm_falcon_qmgr *qmgr;
const char *name;
spinlock_t lock;
u32 head_reg;
u32 tail_reg;
u32 offset;
u32 position;
};
#define FLCNQ_PRINTK(q,l,p,f,a...) FLCN_PRINTK((q)->qmgr->falcon, l, p, "%s: "f, (q)->name, ##a)
#define FLCNQ_DBG(q,f,a...) FLCNQ_PRINTK((q), DEBUG, info, f, ##a)
#define FLCNQ_ERR(q,f,a...) FLCNQ_PRINTK((q), ERROR, err, f, ##a)
#endif
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