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1/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */2/*3 * Copyright 2013-2016 Freescale Semiconductor, Inc.4 * Copyright 2016-2017 NXP5 */6 7#ifndef __SG_SW_QM_H8#define __SG_SW_QM_H9 10#include <soc/fsl/qman.h>11#include "regs.h"12 13static inline void __dma_to_qm_sg(struct qm_sg_entry *qm_sg_ptr, dma_addr_t dma,14 u16 offset)15{16 qm_sg_entry_set64(qm_sg_ptr, dma);17 qm_sg_ptr->__reserved2 = 0;18 qm_sg_ptr->bpid = 0;19 qm_sg_ptr->offset = cpu_to_be16(offset & QM_SG_OFF_MASK);20}21 22static inline void dma_to_qm_sg_one(struct qm_sg_entry *qm_sg_ptr,23 dma_addr_t dma, u32 len, u16 offset)24{25 __dma_to_qm_sg(qm_sg_ptr, dma, offset);26 qm_sg_entry_set_len(qm_sg_ptr, len);27}28 29static inline void dma_to_qm_sg_one_last(struct qm_sg_entry *qm_sg_ptr,30 dma_addr_t dma, u32 len, u16 offset)31{32 __dma_to_qm_sg(qm_sg_ptr, dma, offset);33 qm_sg_entry_set_f(qm_sg_ptr, len);34}35 36static inline void dma_to_qm_sg_one_ext(struct qm_sg_entry *qm_sg_ptr,37 dma_addr_t dma, u32 len, u16 offset)38{39 __dma_to_qm_sg(qm_sg_ptr, dma, offset);40 qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | (len & QM_SG_LEN_MASK));41}42 43static inline void dma_to_qm_sg_one_last_ext(struct qm_sg_entry *qm_sg_ptr,44 dma_addr_t dma, u32 len,45 u16 offset)46{47 __dma_to_qm_sg(qm_sg_ptr, dma, offset);48 qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | QM_SG_FIN |49 (len & QM_SG_LEN_MASK));50}51 52/*53 * convert scatterlist to h/w link table format54 * but does not have final bit; instead, returns last entry55 */56static inline struct qm_sg_entry *57sg_to_qm_sg(struct scatterlist *sg, int len,58 struct qm_sg_entry *qm_sg_ptr, u16 offset)59{60 int ent_len;61 62 while (len) {63 ent_len = min_t(int, sg_dma_len(sg), len);64 65 dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg), ent_len,66 offset);67 qm_sg_ptr++;68 sg = sg_next(sg);69 len -= ent_len;70 }71 return qm_sg_ptr - 1;72}73 74/*75 * convert scatterlist to h/w link table format76 * scatterlist must have been previously dma mapped77 */78static inline void sg_to_qm_sg_last(struct scatterlist *sg, int len,79 struct qm_sg_entry *qm_sg_ptr, u16 offset)80{81 qm_sg_ptr = sg_to_qm_sg(sg, len, qm_sg_ptr, offset);82 qm_sg_entry_set_f(qm_sg_ptr, qm_sg_entry_get_len(qm_sg_ptr));83}84 85#endif /* __SG_SW_QM_H */86