54 строки
1.4 KiB
C
54 строки
1.4 KiB
C
/* 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 sg_count,
|
|
struct dpaa2_sg_entry *qm_sg_ptr, u16 offset)
|
|
{
|
|
while (sg_count && sg) {
|
|
dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg),
|
|
sg_dma_len(sg), offset);
|
|
qm_sg_ptr++;
|
|
sg = sg_next(sg);
|
|
sg_count--;
|
|
}
|
|
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 sg_count,
|
|
struct dpaa2_sg_entry *qm_sg_ptr,
|
|
u16 offset)
|
|
{
|
|
qm_sg_ptr = sg_to_qm_sg(sg, sg_count, qm_sg_ptr, offset);
|
|
dpaa2_sg_set_final(qm_sg_ptr, true);
|
|
}
|
|
|
|
#endif /* _SG_SW_QM2_H_ */
|