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85 lines
2.2 KiB
85 lines
2.2 KiB
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ |
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/* |
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* Copyright 2013-2016 Freescale Semiconductor, Inc. |
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* Copyright 2016-2017 NXP |
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*/ |
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#ifndef __SG_SW_QM_H |
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#define __SG_SW_QM_H |
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#include <soc/fsl/qman.h> |
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#include "regs.h" |
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static inline void __dma_to_qm_sg(struct qm_sg_entry *qm_sg_ptr, dma_addr_t dma, |
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u16 offset) |
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{ |
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qm_sg_entry_set64(qm_sg_ptr, dma); |
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qm_sg_ptr->__reserved2 = 0; |
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qm_sg_ptr->bpid = 0; |
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qm_sg_ptr->offset = cpu_to_be16(offset & QM_SG_OFF_MASK); |
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} |
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static inline void dma_to_qm_sg_one(struct qm_sg_entry *qm_sg_ptr, |
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dma_addr_t dma, u32 len, u16 offset) |
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{ |
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__dma_to_qm_sg(qm_sg_ptr, dma, offset); |
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qm_sg_entry_set_len(qm_sg_ptr, len); |
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} |
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static inline void dma_to_qm_sg_one_last(struct qm_sg_entry *qm_sg_ptr, |
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dma_addr_t dma, u32 len, u16 offset) |
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{ |
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__dma_to_qm_sg(qm_sg_ptr, dma, offset); |
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qm_sg_entry_set_f(qm_sg_ptr, len); |
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} |
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static inline void dma_to_qm_sg_one_ext(struct qm_sg_entry *qm_sg_ptr, |
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dma_addr_t dma, u32 len, u16 offset) |
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{ |
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__dma_to_qm_sg(qm_sg_ptr, dma, offset); |
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qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | (len & QM_SG_LEN_MASK)); |
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} |
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static inline void dma_to_qm_sg_one_last_ext(struct qm_sg_entry *qm_sg_ptr, |
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dma_addr_t dma, u32 len, |
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u16 offset) |
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{ |
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__dma_to_qm_sg(qm_sg_ptr, dma, offset); |
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qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | QM_SG_FIN | |
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(len & QM_SG_LEN_MASK)); |
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} |
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/* |
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* convert scatterlist to h/w link table format |
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* but does not have final bit; instead, returns last entry |
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*/ |
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static inline struct qm_sg_entry * |
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sg_to_qm_sg(struct scatterlist *sg, int len, |
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struct qm_sg_entry *qm_sg_ptr, u16 offset) |
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{ |
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int ent_len; |
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while (len) { |
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ent_len = min_t(int, sg_dma_len(sg), len); |
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dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg), ent_len, |
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offset); |
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qm_sg_ptr++; |
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sg = sg_next(sg); |
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len -= ent_len; |
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} |
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return qm_sg_ptr - 1; |
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} |
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/* |
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* convert scatterlist to h/w link table format |
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* scatterlist must have been previously dma mapped |
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*/ |
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static inline void sg_to_qm_sg_last(struct scatterlist *sg, int len, |
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struct qm_sg_entry *qm_sg_ptr, u16 offset) |
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{ |
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qm_sg_ptr = sg_to_qm_sg(sg, len, qm_sg_ptr, offset); |
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qm_sg_entry_set_f(qm_sg_ptr, qm_sg_entry_get_len(qm_sg_ptr)); |
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} |
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#endif /* __SG_SW_QM_H */
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