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85 lines
2.0 KiB
85 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* CAAM/SEC 4.x functions for using scatterlists in caam driver |
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* |
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* Copyright 2008-2011 Freescale Semiconductor, Inc. |
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* |
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*/ |
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#ifndef _SG_SW_SEC4_H_ |
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#define _SG_SW_SEC4_H_ |
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#include "ctrl.h" |
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#include "regs.h" |
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#include "sg_sw_qm2.h" |
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#include <soc/fsl/dpaa2-fd.h> |
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struct sec4_sg_entry { |
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u64 ptr; |
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u32 len; |
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u32 bpid_offset; |
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}; |
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/* |
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* convert single dma address to h/w link table format |
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*/ |
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static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, |
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dma_addr_t dma, u32 len, u16 offset) |
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{ |
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if (caam_dpaa2) { |
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dma_to_qm_sg_one((struct dpaa2_sg_entry *)sec4_sg_ptr, dma, len, |
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offset); |
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} else { |
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sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma); |
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sec4_sg_ptr->len = cpu_to_caam32(len); |
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sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset & |
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SEC4_SG_OFFSET_MASK); |
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} |
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print_hex_dump_debug("sec4_sg_ptr@: ", DUMP_PREFIX_ADDRESS, 16, 4, |
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sec4_sg_ptr, sizeof(struct sec4_sg_entry), 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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* but does not have final bit; instead, returns last entry |
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*/ |
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static inline struct sec4_sg_entry * |
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sg_to_sec4_sg(struct scatterlist *sg, int len, |
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struct sec4_sg_entry *sec4_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_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), ent_len, |
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offset); |
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sec4_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 sec4_sg_ptr - 1; |
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} |
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static inline void sg_to_sec4_set_last(struct sec4_sg_entry *sec4_sg_ptr) |
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{ |
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if (caam_dpaa2) |
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dpaa2_sg_set_final((struct dpaa2_sg_entry *)sec4_sg_ptr, true); |
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else |
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sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN); |
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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_sec4_sg_last(struct scatterlist *sg, int len, |
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struct sec4_sg_entry *sec4_sg_ptr, |
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u16 offset) |
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{ |
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sec4_sg_ptr = sg_to_sec4_sg(sg, len, sec4_sg_ptr, offset); |
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sg_to_sec4_set_last(sec4_sg_ptr); |
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} |
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#endif /* _SG_SW_SEC4_H_ */
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