1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 /* Copyright (c) 2022 Rockchip Electronics Co. Ltd. */ 4 5 #ifndef __RK_CRYPTO_UTILS_H__ 6 #define __RK_CRYPTO_UTILS_H__ 7 8 #include <linux/dma-mapping.h> 9 #include <linux/scatterlist.h> 10 11 #include "rk_crypto_core.h" 12 13 /* Default 256 x 4K = 1MByte */ 14 #define RK_DEFAULT_LLI_CNT 256 15 16 struct crypto_lli_desc { 17 u32 src_addr; 18 u32 src_len; 19 u32 dst_addr; 20 u32 dst_len; 21 u32 user_define; 22 u32 reserve; 23 u32 dma_ctrl; 24 u32 next_addr; 25 }; 26 27 struct rk_hw_desc { 28 struct device *dev; 29 struct crypto_lli_desc *lli_aad; 30 struct crypto_lli_desc *lli_head; 31 struct crypto_lli_desc *lli_tail; 32 dma_addr_t lli_head_dma; 33 dma_addr_t lli_aad_dma; 34 u32 total; 35 }; 36 37 void rk_crypto_write_regs(struct rk_crypto_dev *rk_dev, u32 base_addr, const u8 *data, u32 bytes); 38 39 void rk_crypto_clear_regs(struct rk_crypto_dev *rk_dev, u32 base_addr, u32 words); 40 41 void rk_crypto_read_regs(struct rk_crypto_dev *rk_dev, u32 base_addr, u8 *data, u32 bytes); 42 43 bool rk_crypto_check_align(struct scatterlist *src_sg, size_t src_nents, 44 struct scatterlist *dst_sg, size_t dst_nents, 45 int align_mask); 46 47 bool rk_crypto_check_dmafd(struct scatterlist *sgl, size_t nents); 48 49 u64 rk_crypto_hw_desc_maxlen(struct scatterlist *sg, u64 len, u32 *max_nents); 50 51 int rk_crypto_hw_desc_alloc(struct device *dev, struct rk_hw_desc *hw_desc); 52 53 int rk_crypto_hw_desc_init(struct rk_hw_desc *hw_desc, 54 struct scatterlist *src_sg, 55 struct scatterlist *dst_sg, 56 u64 len); 57 58 void rk_crypto_hw_desc_free(struct rk_hw_desc *hw_desc); 59 60 void rk_crypto_dump_hw_desc(struct rk_hw_desc *hw_desc); 61 62 #endif 63 64