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 struct list_head backlog_head; 50 51 int err_type; 52 int req_id; 53 int flag; 54 55 /* Status of the SEC request */ 56 bool fake_busy; 57 bool use_pbuf; 58 }; 59 60 /** 61 * struct sec_req_op - Operations for SEC request 62 * @buf_map: DMA map the SGL buffers of the request 63 * @buf_unmap: DMA unmap the SGL buffers of the request 64 * @bd_fill: Fill the SEC queue BD 65 * @bd_send: Send the SEC BD into the hardware queue 66 * @callback: Call back for the request 67 * @process: Main processing logic of Skcipher 68 */ 69 struct sec_req_op { 70 int (*buf_map)(struct sec_ctx *ctx, struct sec_req *req); 71 void (*buf_unmap)(struct sec_ctx *ctx, struct sec_req *req); 72 void (*do_transfer)(struct sec_ctx *ctx, struct sec_req *req); 73 int (*bd_fill)(struct sec_ctx *ctx, struct sec_req *req); 74 int (*bd_send)(struct sec_ctx *ctx, struct sec_req *req); 75 void (*callback)(struct sec_ctx *ctx, struct sec_req *req, int err); 76 int (*process)(struct sec_ctx *ctx, struct sec_req *req); 77 }; 78 79 /* SEC auth context */ 80 struct sec_auth_ctx { 81 dma_addr_t a_key_dma; 82 u8 *a_key; 83 u8 a_key_len; 84 u8 mac_len; 85 u8 a_alg; 86 struct crypto_shash *hash_tfm; 87 }; 88 89 /* SEC cipher context which cipher's relatives */ 90 struct sec_cipher_ctx { 91 u8 *c_key; 92 dma_addr_t c_key_dma; 93 sector_t iv_offset; 94 u32 c_gran_size; 95 u32 ivsize; 96 u8 c_mode; 97 u8 c_alg; 98 u8 c_key_len; 99 }; 100 101 /* SEC queue context which defines queue's relatives */ 102 struct sec_qp_ctx { 103 struct hisi_qp *qp; 104 struct sec_req *req_list[QM_Q_DEPTH]; 105 struct idr req_idr; 106 struct sec_alg_res res[QM_Q_DEPTH]; 107 struct sec_ctx *ctx; 108 struct mutex req_lock; 109 struct list_head backlog; 110 struct hisi_acc_sgl_pool *c_in_pool; 111 struct hisi_acc_sgl_pool *c_out_pool; 112 atomic_t pending_reqs; 113 }; 114 115 enum sec_alg_type { 116 SEC_SKCIPHER, 117 SEC_AEAD 118 }; 119 120 /* SEC Crypto TFM context which defines queue and cipher .etc relatives */ 121 struct sec_ctx { 122 struct sec_qp_ctx *qp_ctx; 123 struct sec_dev *sec; 124 const struct sec_req_op *req_op; 125 struct hisi_qp **qps; 126 127 /* Half queues for encipher, and half for decipher */ 128 u32 hlf_q_num; 129 130 /* Threshold for fake busy, trigger to return -EBUSY to user */ 131 u32 fake_req_limit; 132 133 /* Currrent cyclic index to select a queue for encipher */ 134 atomic_t enc_qcyclic; 135 136 /* Currrent cyclic index to select a queue for decipher */ 137 atomic_t dec_qcyclic; 138 139 enum sec_alg_type alg_type; 140 bool pbuf_supported; 141 struct sec_cipher_ctx c_ctx; 142 struct sec_auth_ctx a_ctx; 143 }; 144 145 enum sec_endian { 146 SEC_LE = 0, 147 SEC_32BE, 148 SEC_64BE 149 }; 150 151 enum sec_debug_file_index { 152 SEC_CURRENT_QM, 153 SEC_CLEAR_ENABLE, 154 SEC_DEBUG_FILE_NUM, 155 }; 156 157 struct sec_debug_file { 158 enum sec_debug_file_index index; 159 spinlock_t lock; 160 struct hisi_qm *qm; 161 }; 162 163 struct sec_dfx { 164 atomic64_t send_cnt; 165 atomic64_t recv_cnt; 166 atomic64_t send_busy_cnt; 167 atomic64_t recv_busy_cnt; 168 atomic64_t err_bd_cnt; 169 atomic64_t invalid_req_cnt; 170 atomic64_t done_flag_cnt; 171 }; 172 173 struct sec_debug { 174 struct sec_dfx dfx; 175 struct sec_debug_file files[SEC_DEBUG_FILE_NUM]; 176 }; 177 178 struct sec_dev { 179 struct hisi_qm qm; 180 struct sec_debug debug; 181 u32 ctx_q_num; 182 bool iommu_used; 183 unsigned long status; 184 }; 185 186 void sec_destroy_qps(struct hisi_qp **qps, int qp_num); 187 struct hisi_qp **sec_create_qps(void); 188 int sec_register_to_crypto(void); 189 void sec_unregister_from_crypto(void); 190 #endif 191