1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
3 * Copyright 2015-2016 Freescale Semiconductor, Inc.
10 #include <soc/fsl/dpaa2-fd.h>
12 static inline void dma_to_qm_sg_one(struct dpaa2_sg_entry *qm_sg_ptr,
13 dma_addr_t dma, u32 len, u16 offset)
15 dpaa2_sg_set_addr(qm_sg_ptr, dma);
16 dpaa2_sg_set_format(qm_sg_ptr, dpaa2_sg_single);
17 dpaa2_sg_set_final(qm_sg_ptr, false);
18 dpaa2_sg_set_len(qm_sg_ptr, len);
19 dpaa2_sg_set_bpid(qm_sg_ptr, 0);
20 dpaa2_sg_set_offset(qm_sg_ptr, offset);
24 * convert scatterlist to h/w link table format
25 * but does not have final bit; instead, returns last entry
27 static inline struct dpaa2_sg_entry *
28 sg_to_qm_sg(struct scatterlist *sg, int len,
29 struct dpaa2_sg_entry *qm_sg_ptr, u16 offset)
34 ent_len = min_t(int, sg_dma_len(sg), len);
36 dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg), ent_len,
46 * convert scatterlist to h/w link table format
47 * scatterlist must have been previously dma mapped
49 static inline void sg_to_qm_sg_last(struct scatterlist *sg, int len,
50 struct dpaa2_sg_entry *qm_sg_ptr,
53 qm_sg_ptr = sg_to_qm_sg(sg, len, qm_sg_ptr, offset);
54 dpaa2_sg_set_final(qm_sg_ptr, true);
57 #endif /* _SG_SW_QM2_H_ */