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 "../qm.h" 8 #include "sec_crypto.h" 9 10 /* Algorithm resource per hardware SEC queue */ 11 struct sec_alg_res { 12 u8 *pbuf; 13 dma_addr_t pbuf_dma; 14 u8 *c_ivin; 15 dma_addr_t c_ivin_dma; 16 u8 *a_ivin; 17 dma_addr_t a_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_out; 25 dma_addr_t c_out_dma; 26 u8 *c_ivin; 27 dma_addr_t c_ivin_dma; 28 struct skcipher_request *sk_req; 29 u32 c_len; 30 bool encrypt; 31 }; 32 33 struct sec_aead_req { 34 u8 *out_mac; 35 dma_addr_t out_mac_dma; 36 u8 *a_ivin; 37 dma_addr_t a_ivin_dma; 38 struct aead_request *aead_req; 39 }; 40 41 /* SEC request of Crypto */ 42 struct sec_req { 43 union { 44 struct sec_sqe sec_sqe; 45 struct sec_sqe3 sec_sqe3; 46 }; 47 struct sec_ctx *ctx; 48 struct sec_qp_ctx *qp_ctx; 49 50 /** 51 * Common parameter of the SEC request. 52 */ 53 struct hisi_acc_hw_sgl *in; 54 dma_addr_t in_dma; 55 struct sec_cipher_req c_req; 56 struct sec_aead_req aead_req; 57 struct list_head backlog_head; 58 59 int err_type; 60 int req_id; 61 u32 flag; 62 63 /* Status of the SEC request */ 64 bool fake_busy; 65 bool use_pbuf; 66 }; 67 68 /** 69 * struct sec_req_op - Operations for SEC request 70 * @buf_map: DMA map the SGL buffers of the request 71 * @buf_unmap: DMA unmap the SGL buffers of the request 72 * @bd_fill: Fill the SEC queue BD 73 * @bd_send: Send the SEC BD into the hardware queue 74 * @callback: Call back for the request 75 * @process: Main processing logic of Skcipher 76 */ 77 struct sec_req_op { 78 int (*buf_map)(struct sec_ctx *ctx, struct sec_req *req); 79 void (*buf_unmap)(struct sec_ctx *ctx, struct sec_req *req); 80 void (*do_transfer)(struct sec_ctx *ctx, struct sec_req *req); 81 int (*bd_fill)(struct sec_ctx *ctx, struct sec_req *req); 82 int (*bd_send)(struct sec_ctx *ctx, struct sec_req *req); 83 void (*callback)(struct sec_ctx *ctx, struct sec_req *req, int err); 84 int (*process)(struct sec_ctx *ctx, struct sec_req *req); 85 }; 86 87 /* SEC auth context */ 88 struct sec_auth_ctx { 89 dma_addr_t a_key_dma; 90 u8 *a_key; 91 u8 a_key_len; 92 u8 mac_len; 93 u8 a_alg; 94 bool fallback; 95 struct crypto_shash *hash_tfm; 96 struct crypto_aead *fallback_aead_tfm; 97 }; 98 99 /* SEC cipher context which cipher's relatives */ 100 struct sec_cipher_ctx { 101 u8 *c_key; 102 dma_addr_t c_key_dma; 103 sector_t iv_offset; 104 u32 c_gran_size; 105 u32 ivsize; 106 u8 c_mode; 107 u8 c_alg; 108 u8 c_key_len; 109 110 /* add software support */ 111 bool fallback; 112 struct crypto_sync_skcipher *fbtfm; 113 }; 114 115 /* SEC queue context which defines queue's relatives */ 116 struct sec_qp_ctx { 117 struct hisi_qp *qp; 118 struct sec_req *req_list[QM_Q_DEPTH]; 119 struct idr req_idr; 120 struct sec_alg_res res[QM_Q_DEPTH]; 121 struct sec_ctx *ctx; 122 struct mutex req_lock; 123 struct list_head backlog; 124 struct hisi_acc_sgl_pool *c_in_pool; 125 struct hisi_acc_sgl_pool *c_out_pool; 126 }; 127 128 enum sec_alg_type { 129 SEC_SKCIPHER, 130 SEC_AEAD 131 }; 132 133 /* SEC Crypto TFM context which defines queue and cipher .etc relatives */ 134 struct sec_ctx { 135 struct sec_qp_ctx *qp_ctx; 136 struct sec_dev *sec; 137 const struct sec_req_op *req_op; 138 struct hisi_qp **qps; 139 140 /* Half queues for encipher, and half for decipher */ 141 u32 hlf_q_num; 142 143 /* Threshold for fake busy, trigger to return -EBUSY to user */ 144 u32 fake_req_limit; 145 146 /* Currrent cyclic index to select a queue for encipher */ 147 atomic_t enc_qcyclic; 148 149 /* Currrent cyclic index to select a queue for decipher */ 150 atomic_t dec_qcyclic; 151 152 enum sec_alg_type alg_type; 153 bool pbuf_supported; 154 struct sec_cipher_ctx c_ctx; 155 struct sec_auth_ctx a_ctx; 156 u8 type_supported; 157 struct device *dev; 158 }; 159 160 enum sec_endian { 161 SEC_LE = 0, 162 SEC_32BE, 163 SEC_64BE 164 }; 165 166 enum sec_debug_file_index { 167 SEC_CLEAR_ENABLE, 168 SEC_DEBUG_FILE_NUM, 169 }; 170 171 struct sec_debug_file { 172 enum sec_debug_file_index index; 173 spinlock_t lock; 174 struct hisi_qm *qm; 175 }; 176 177 struct sec_dfx { 178 atomic64_t send_cnt; 179 atomic64_t recv_cnt; 180 atomic64_t send_busy_cnt; 181 atomic64_t recv_busy_cnt; 182 atomic64_t err_bd_cnt; 183 atomic64_t invalid_req_cnt; 184 atomic64_t done_flag_cnt; 185 }; 186 187 struct sec_debug { 188 struct sec_dfx dfx; 189 struct sec_debug_file files[SEC_DEBUG_FILE_NUM]; 190 }; 191 192 struct sec_dev { 193 struct hisi_qm qm; 194 struct sec_debug debug; 195 u32 ctx_q_num; 196 bool iommu_used; 197 }; 198 199 void sec_destroy_qps(struct hisi_qp **qps, int qp_num); 200 struct hisi_qp **sec_create_qps(void); 201 int sec_register_to_crypto(struct hisi_qm *qm); 202 void sec_unregister_from_crypto(struct hisi_qm *qm); 203 #endif 204