/* 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