From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/crypto/caam/sg_sw_sec4.h | 83 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 drivers/crypto/caam/sg_sw_sec4.h (limited to 'drivers/crypto/caam/sg_sw_sec4.h') diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h new file mode 100644 index 000000000..dbfa9fce3 --- /dev/null +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * CAAM/SEC 4.x functions for using scatterlists in caam driver + * + * Copyright 2008-2011 Freescale Semiconductor, Inc. + * + */ + +#ifndef _SG_SW_SEC4_H_ +#define _SG_SW_SEC4_H_ + +#include "ctrl.h" +#include "regs.h" +#include "sg_sw_qm2.h" +#include + +struct sec4_sg_entry { + u64 ptr; + u32 len; + u32 bpid_offset; +}; + +/* + * convert single dma address to h/w link table format + */ +static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, + dma_addr_t dma, u32 len, u16 offset) +{ + if (caam_dpaa2) { + dma_to_qm_sg_one((struct dpaa2_sg_entry *)sec4_sg_ptr, dma, len, + offset); + } else { + sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma); + sec4_sg_ptr->len = cpu_to_caam32(len); + sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset & + SEC4_SG_OFFSET_MASK); + } +#ifdef DEBUG + print_hex_dump(KERN_ERR, "sec4_sg_ptr@: ", + DUMP_PREFIX_ADDRESS, 16, 4, sec4_sg_ptr, + sizeof(struct sec4_sg_entry), 1); +#endif +} + +/* + * convert scatterlist to h/w link table format + * but does not have final bit; instead, returns last entry + */ +static inline struct sec4_sg_entry * +sg_to_sec4_sg(struct scatterlist *sg, int sg_count, + struct sec4_sg_entry *sec4_sg_ptr, u16 offset) +{ + while (sg_count) { + dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), + sg_dma_len(sg), offset); + sec4_sg_ptr++; + sg = sg_next(sg); + sg_count--; + } + return sec4_sg_ptr - 1; +} + +static inline void sg_to_sec4_set_last(struct sec4_sg_entry *sec4_sg_ptr) +{ + if (caam_dpaa2) + dpaa2_sg_set_final((struct dpaa2_sg_entry *)sec4_sg_ptr, true); + else + sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN); +} + +/* + * convert scatterlist to h/w link table format + * scatterlist must have been previously dma mapped + */ +static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int sg_count, + struct sec4_sg_entry *sec4_sg_ptr, + u16 offset) +{ + sec4_sg_ptr = sg_to_sec4_sg(sg, sg_count, sec4_sg_ptr, offset); + sg_to_sec4_set_last(sec4_sg_ptr); +} + +#endif /* _SG_SW_SEC4_H_ */ -- cgit v1.2.3