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 /* New members must be added within the __struct_group() macro below. */ 19 __struct_group(qat_alg_buf_list_hdr, hdr, __packed, 20 u64 resrvd; 21 u32 num_bufs; 22 u32 num_mapped_bufs; 23 ); 24 struct qat_alg_buf buffers[]; 25 } __packed; 26 static_assert(offsetof(struct qat_alg_buf_list, buffers) == sizeof(struct qat_alg_buf_list_hdr), 27 "struct member likely outside of __struct_group()"); 28 29 struct qat_alg_fixed_buf_list { 30 struct qat_alg_buf_list_hdr sgl_hdr; 31 struct qat_alg_buf descriptors[QAT_MAX_BUFF_DESC]; 32 } __packed __aligned(64); 33 34 struct qat_request_buffs { 35 struct qat_alg_buf_list *bl; 36 dma_addr_t blp; 37 struct qat_alg_buf_list *blout; 38 dma_addr_t bloutp; 39 size_t sz; 40 size_t sz_out; 41 bool sgl_src_valid; 42 bool sgl_dst_valid; 43 struct qat_alg_fixed_buf_list sgl_src; 44 struct qat_alg_fixed_buf_list sgl_dst; 45 }; 46 47 struct qat_sgl_to_bufl_params { 48 dma_addr_t extra_dst_buff; 49 size_t sz_extra_dst_buff; 50 unsigned int sskip; 51 unsigned int dskip; 52 }; 53 54 void qat_bl_free_bufl(struct adf_accel_dev *accel_dev, 55 struct qat_request_buffs *buf); 56 int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev, 57 struct scatterlist *sgl, 58 struct scatterlist *sglout, 59 struct qat_request_buffs *buf, 60 struct qat_sgl_to_bufl_params *params, 61 gfp_t flags); 62 63 static inline gfp_t qat_algs_alloc_flags(struct crypto_async_request *req) 64 { 65 return req->flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC; 66 } 67 68 int qat_bl_realloc_map_new_dst(struct adf_accel_dev *accel_dev, 69 struct scatterlist **newd, 70 unsigned int dlen, 71 struct qat_request_buffs *qat_bufs, 72 gfp_t gfp); 73 74 #endif 75