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/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/*
* Copyright 2014-2016 Freescale Semiconductor Inc.
* Copyright 2016 NXP
*
*/
#ifndef __FSL_DPAA2_GLOBAL_H
#define __FSL_DPAA2_GLOBAL_H
#include <linux/types.h>
#include <linux/cpumask.h>
#include "dpaa2-fd.h"
struct dpaa2_dq {
union {
struct common {
u8 verb;
u8 reserved[63];
} common;
struct dq {
u8 verb;
u8 stat;
__le16 seqnum;
__le16 oprid;
u8 reserved;
u8 tok;
__le32 fqid;
u32 reserved2;
__le32 fq_byte_cnt;
__le32 fq_frm_cnt;
__le64 fqd_ctx;
u8 fd[32];
} dq;
struct scn {
u8 verb;
u8 stat;
u8 state;
u8 reserved;
__le32 rid_tok;
__le64 ctx;
} scn;
};
};
/* Parsing frame dequeue results */
/* FQ empty */
#define DPAA2_DQ_STAT_FQEMPTY 0x80
/* FQ held active */
#define DPAA2_DQ_STAT_HELDACTIVE 0x40
/* FQ force eligible */
#define DPAA2_DQ_STAT_FORCEELIGIBLE 0x20
/* valid frame */
#define DPAA2_DQ_STAT_VALIDFRAME 0x10
/* FQ ODP enable */
#define DPAA2_DQ_STAT_ODPVALID 0x04
/* volatile dequeue */
#define DPAA2_DQ_STAT_VOLATILE 0x02
/* volatile dequeue command is expired */
#define DPAA2_DQ_STAT_EXPIRED 0x01
#define DQ_FQID_MASK 0x00FFFFFF
#define DQ_FRAME_COUNT_MASK 0x00FFFFFF
/**
* dpaa2_dq_flags() - Get the stat field of dequeue response
* @dq: the dequeue result.
*/
static inline u32 dpaa2_dq_flags(const struct dpaa2_dq *dq)
{
return dq->dq.stat;
}
/**
* dpaa2_dq_is_pull() - Check whether the dq response is from a pull
* command.
* @dq: the dequeue result
*
* Return 1 for volatile(pull) dequeue, 0 for static dequeue.
*/
static inline int dpaa2_dq_is_pull(const struct dpaa2_dq *dq)
{
return (int)(dpaa2_dq_flags(dq) & DPAA2_DQ_STAT_VOLATILE);
}
/**
* dpaa2_dq_is_pull_complete() - Check whether the pull command is completed.
* @dq: the dequeue result
*
* Return boolean.
*/
static inline bool dpaa2_dq_is_pull_complete(const struct dpaa2_dq *dq)
{
return !!(dpaa2_dq_flags(dq) & DPAA2_DQ_STAT_EXPIRED);
}
/**
* dpaa2_dq_seqnum() - Get the seqnum field in dequeue response
* @dq: the dequeue result
*
* seqnum is valid only if VALIDFRAME flag is TRUE
*
* Return seqnum.
*/
static inline u16 dpaa2_dq_seqnum(const struct dpaa2_dq *dq)
{
return le16_to_cpu(dq->dq.seqnum);
}
/**
* dpaa2_dq_odpid() - Get the odpid field in dequeue response
* @dq: the dequeue result
*
* odpid is valid only if ODPVALID flag is TRUE.
*
* Return odpid.
*/
static inline u16 dpaa2_dq_odpid(const struct dpaa2_dq *dq)
{
return le16_to_cpu(dq->dq.oprid);
}
/**
* dpaa2_dq_fqid() - Get the fqid in dequeue response
* @dq: the dequeue result
*
* Return fqid.
*/
static inline u32 dpaa2_dq_fqid(const struct dpaa2_dq *dq)
{
return le32_to_cpu(dq->dq.fqid) & DQ_FQID_MASK;
}
/**
* dpaa2_dq_byte_count() - Get the byte count in dequeue response
* @dq: the dequeue result
*
* Return the byte count remaining in the FQ.
*/
static inline u32 dpaa2_dq_byte_count(const struct dpaa2_dq *dq)
{
return le32_to_cpu(dq->dq.fq_byte_cnt);
}
/**
* dpaa2_dq_frame_count() - Get the frame count in dequeue response
* @dq: the dequeue result
*
* Return the frame count remaining in the FQ.
*/
static inline u32 dpaa2_dq_frame_count(const struct dpaa2_dq *dq)
{
return le32_to_cpu(dq->dq.fq_frm_cnt) & DQ_FRAME_COUNT_MASK;
}
/**
* dpaa2_dq_fd_ctx() - Get the frame queue context in dequeue response
* @dq: the dequeue result
*
* Return the frame queue context.
*/
static inline u64 dpaa2_dq_fqd_ctx(const struct dpaa2_dq *dq)
{
return le64_to_cpu(dq->dq.fqd_ctx);
}
/**
* dpaa2_dq_fd() - Get the frame descriptor in dequeue response
* @dq: the dequeue result
*
* Return the frame descriptor.
*/
static inline const struct dpaa2_fd *dpaa2_dq_fd(const struct dpaa2_dq *dq)
{
return (const struct dpaa2_fd *)&dq->dq.fd[0];
}
#define DPAA2_CSCN_SIZE sizeof(struct dpaa2_dq)
#define DPAA2_CSCN_ALIGN 16
#define DPAA2_CSCN_STATE_CG BIT(0)
/**
* dpaa2_cscn_state_congested() - Check congestion state
* @cscn: congestion SCN (delivered to WQ or memory)
*
i * Return true is congested.
*/
static inline bool dpaa2_cscn_state_congested(struct dpaa2_dq *cscn)
{
return !!(cscn->scn.state & DPAA2_CSCN_STATE_CG);
}
#endif /* __FSL_DPAA2_GLOBAL_H */
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