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/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/*
* Copyright 2015-2016 Freescale Semiconductor, Inc.
* Copyright 2017 NXP
*/
#ifndef _SG_SW_QM2_H_
#define _SG_SW_QM2_H_
#include <soc/fsl/dpaa2-fd.h>
static inline void dma_to_qm_sg_one(struct dpaa2_sg_entry *qm_sg_ptr,
dma_addr_t dma, u32 len, u16 offset)
{
dpaa2_sg_set_addr(qm_sg_ptr, dma);
dpaa2_sg_set_format(qm_sg_ptr, dpaa2_sg_single);
dpaa2_sg_set_final(qm_sg_ptr, false);
dpaa2_sg_set_len(qm_sg_ptr, len);
dpaa2_sg_set_bpid(qm_sg_ptr, 0);
dpaa2_sg_set_offset(qm_sg_ptr, offset);
}
/*
* convert scatterlist to h/w link table format
* but does not have final bit; instead, returns last entry
*/
static inline struct dpaa2_sg_entry *
sg_to_qm_sg(struct scatterlist *sg, int len,
struct dpaa2_sg_entry *qm_sg_ptr, u16 offset)
{
int ent_len;
while (len) {
ent_len = min_t(int, sg_dma_len(sg), len);
dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg), ent_len,
offset);
qm_sg_ptr++;
sg = sg_next(sg);
len -= ent_len;
}
return qm_sg_ptr - 1;
}
/*
* convert scatterlist to h/w link table format
* scatterlist must have been previously dma mapped
*/
static inline void sg_to_qm_sg_last(struct scatterlist *sg, int len,
struct dpaa2_sg_entry *qm_sg_ptr,
u16 offset)
{
qm_sg_ptr = sg_to_qm_sg(sg, len, qm_sg_ptr, offset);
dpaa2_sg_set_final(qm_sg_ptr, true);
}
#endif /* _SG_SW_QM2_H_ */
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