1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright(c) 2014 - 2022 Intel Corporation */ 3 #ifndef QAT_BL_H 4 #define QAT_BL_H 5 #include <linux/crypto.h> 6 #include <linux/scatterlist.h> 7 #include <linux/types.h> 8 9 #define QAT_MAX_BUFF_DESC 4 10 11 struct qat_alg_buf { 12 u32 len; 13 u32 resrvd; 14 u64 addr; 15 } __packed; 16 17 struct qat_alg_buf_list { 18 u64 resrvd; 19 u32 num_bufs; 20 u32 num_mapped_bufs; 21 struct qat_alg_buf buffers[]; 22 } __packed; 23 24 struct qat_alg_fixed_buf_list { 25 struct qat_alg_buf_list sgl_hdr; 26 struct qat_alg_buf descriptors[QAT_MAX_BUFF_DESC]; 27 } __packed __aligned(64); 28 29 struct qat_request_buffs { 30 struct qat_alg_buf_list *bl; 31 dma_addr_t blp; 32 struct qat_alg_buf_list *blout; 33 dma_addr_t bloutp; 34 size_t sz; 35 size_t sz_out; 36 bool sgl_src_valid; 37 bool sgl_dst_valid; 38 struct qat_alg_fixed_buf_list sgl_src; 39 struct qat_alg_fixed_buf_list sgl_dst; 40 }; 41 42 struct qat_sgl_to_bufl_params { 43 dma_addr_t extra_dst_buff; 44 size_t sz_extra_dst_buff; 45 unsigned int sskip; 46 unsigned int dskip; 47 }; 48 49 void qat_bl_free_bufl(struct adf_accel_dev *accel_dev, 50 struct qat_request_buffs *buf); 51 int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev, 52 struct scatterlist *sgl, 53 struct scatterlist *sglout, 54 struct qat_request_buffs *buf, 55 struct qat_sgl_to_bufl_params *params, 56 gfp_t flags); 57 58 static inline gfp_t qat_algs_alloc_flags(struct crypto_async_request *req) 59 { 60 return req->flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC; 61 } 62 63 int qat_bl_realloc_map_new_dst(struct adf_accel_dev *accel_dev, 64 struct scatterlist **newd, 65 unsigned int dlen, 66 struct qat_request_buffs *qat_bufs, 67 gfp_t gfp); 68 69 #endif 70