1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2019 HiSilicon Limited. */ 3 4 #ifndef __HISI_SEC_V2_H 5 #define __HISI_SEC_V2_H 6 7 #include <linux/list.h> 8 9 #include "../qm.h" 10 #include "sec_crypto.h" 11 12 /* Algorithm resource per hardware SEC queue */ 13 struct sec_alg_res { 14 u8 *pbuf; 15 dma_addr_t pbuf_dma; 16 u8 *c_ivin; 17 dma_addr_t c_ivin_dma; 18 u8 *out_mac; 19 dma_addr_t out_mac_dma; 20 }; 21 22 /* Cipher request of SEC private */ 23 struct sec_cipher_req { 24 struct hisi_acc_hw_sgl *c_in; 25 dma_addr_t c_in_dma; 26 struct hisi_acc_hw_sgl *c_out; 27 dma_addr_t c_out_dma; 28 u8 *c_ivin; 29 dma_addr_t c_ivin_dma; 30 struct skcipher_request *sk_req; 31 u32 c_len; 32 bool encrypt; 33 }; 34 35 struct sec_aead_req { 36 u8 *out_mac; 37 dma_addr_t out_mac_dma; 38 struct aead_request *aead_req; 39 }; 40 41 /* SEC request of Crypto */ 42 struct sec_req { 43 struct sec_sqe sec_sqe; 44 struct sec_ctx *ctx; 45 struct sec_qp_ctx *qp_ctx; 46 47 struct sec_cipher_req c_req; 48 struct sec_aead_req aead_req; 49 50 int err_type; 51 int req_id; 52 53 /* Status of the SEC request */ 54 bool fake_busy; 55 bool use_pbuf; 56 }; 57 58 /** 59 * struct sec_req_op - Operations for SEC request 60 * @buf_map: DMA map the SGL buffers of the request 61 * @buf_unmap: DMA unmap the SGL buffers of the request 62 * @bd_fill: Fill the SEC queue BD 63 * @bd_send: Send the SEC BD into the hardware queue 64 * @callback: Call back for the request 65 * @process: Main processing logic of Skcipher 66 */ 67 struct sec_req_op { 68 int (*buf_map)(struct sec_ctx *ctx, struct sec_req *req); 69 void (*buf_unmap)(struct sec_ctx *ctx, struct sec_req *req); 70 void (*do_transfer)(struct sec_ctx *ctx, struct sec_req *req); 71 int (*bd_fill)(struct sec_ctx *ctx, struct sec_req *req); 72 int (*bd_send)(struct sec_ctx *ctx, struct sec_req *req); 73 void (*callback)(struct sec_ctx *ctx, struct sec_req *req, int err); 74 int (*process)(struct sec_ctx *ctx, struct sec_req *req); 75 }; 76 77 /* SEC auth context */ 78 struct sec_auth_ctx { 79 dma_addr_t a_key_dma; 80 u8 *a_key; 81 u8 a_key_len; 82 u8 mac_len; 83 u8 a_alg; 84 struct crypto_shash *hash_tfm; 85 }; 86 87 /* SEC cipher context which cipher's relatives */ 88 struct sec_cipher_ctx { 89 u8 *c_key; 90 dma_addr_t c_key_dma; 91 sector_t iv_offset; 92 u32 c_gran_size; 93 u32 ivsize; 94 u8 c_mode; 95 u8 c_alg; 96 u8 c_key_len; 97 }; 98 99 /* SEC queue context which defines queue's relatives */ 100 struct sec_qp_ctx { 101 struct hisi_qp *qp; 102 struct sec_req *req_list[QM_Q_DEPTH]; 103 struct idr req_idr; 104 struct sec_alg_res res[QM_Q_DEPTH]; 105 struct sec_ctx *ctx; 106 struct mutex req_lock; 107 struct hisi_acc_sgl_pool *c_in_pool; 108 struct hisi_acc_sgl_pool *c_out_pool; 109 atomic_t pending_reqs; 110 }; 111 112 enum sec_alg_type { 113 SEC_SKCIPHER, 114 SEC_AEAD 115 }; 116 117 /* SEC Crypto TFM context which defines queue and cipher .etc relatives */ 118 struct sec_ctx { 119 struct sec_qp_ctx *qp_ctx; 120 struct sec_dev *sec; 121 const struct sec_req_op *req_op; 122 struct hisi_qp **qps; 123 124 /* Half queues for encipher, and half for decipher */ 125 u32 hlf_q_num; 126 127 /* Threshold for fake busy, trigger to return -EBUSY to user */ 128 u32 fake_req_limit; 129 130 /* Currrent cyclic index to select a queue for encipher */ 131 atomic_t enc_qcyclic; 132 133 /* Currrent cyclic index to select a queue for decipher */ 134 atomic_t dec_qcyclic; 135 136 enum sec_alg_type alg_type; 137 bool pbuf_supported; 138 struct sec_cipher_ctx c_ctx; 139 struct sec_auth_ctx a_ctx; 140 }; 141 142 enum sec_endian { 143 SEC_LE = 0, 144 SEC_32BE, 145 SEC_64BE 146 }; 147 148 enum sec_debug_file_index { 149 SEC_CURRENT_QM, 150 SEC_CLEAR_ENABLE, 151 SEC_DEBUG_FILE_NUM, 152 }; 153 154 struct sec_debug_file { 155 enum sec_debug_file_index index; 156 spinlock_t lock; 157 struct hisi_qm *qm; 158 }; 159 160 struct sec_dfx { 161 atomic64_t send_cnt; 162 atomic64_t recv_cnt; 163 }; 164 165 struct sec_debug { 166 struct sec_dfx dfx; 167 struct sec_debug_file files[SEC_DEBUG_FILE_NUM]; 168 }; 169 170 struct sec_dev { 171 struct hisi_qm qm; 172 struct sec_debug debug; 173 u32 ctx_q_num; 174 bool iommu_used; 175 unsigned long status; 176 }; 177 178 void sec_destroy_qps(struct hisi_qp **qps, int qp_num); 179 struct hisi_qp **sec_create_qps(void); 180 int sec_register_to_crypto(void); 181 void sec_unregister_from_crypto(void); 182 #endif 183