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 /* Cipher resource per hardware SEC queue */ 13 struct sec_cipher_res { 14 u8 *c_ivin; 15 dma_addr_t c_ivin_dma; 16 }; 17 18 /* Cipher request of SEC private */ 19 struct sec_cipher_req { 20 struct hisi_acc_hw_sgl *c_in; 21 dma_addr_t c_in_dma; 22 struct hisi_acc_hw_sgl *c_out; 23 dma_addr_t c_out_dma; 24 u8 *c_ivin; 25 dma_addr_t c_ivin_dma; 26 struct skcipher_request *sk_req; 27 u32 c_len; 28 bool encrypt; 29 }; 30 31 /* SEC request of Crypto */ 32 struct sec_req { 33 struct sec_sqe sec_sqe; 34 struct sec_ctx *ctx; 35 struct sec_qp_ctx *qp_ctx; 36 37 /* Cipher supported only at present */ 38 struct sec_cipher_req c_req; 39 int err_type; 40 int req_id; 41 42 /* Status of the SEC request */ 43 int fake_busy; 44 }; 45 46 /** 47 * struct sec_req_op - Operations for SEC request 48 * @get_res: Get resources for TFM on the SEC device 49 * @resource_alloc: Allocate resources for queue context on the SEC device 50 * @resource_free: Free resources for queue context on the SEC device 51 * @buf_map: DMA map the SGL buffers of the request 52 * @buf_unmap: DMA unmap the SGL buffers of the request 53 * @bd_fill: Fill the SEC queue BD 54 * @bd_send: Send the SEC BD into the hardware queue 55 * @callback: Call back for the request 56 * @process: Main processing logic of Skcipher 57 */ 58 struct sec_req_op { 59 int (*get_res)(struct sec_ctx *ctx, struct sec_req *req); 60 int (*resource_alloc)(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx); 61 void (*resource_free)(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx); 62 int (*buf_map)(struct sec_ctx *ctx, struct sec_req *req); 63 void (*buf_unmap)(struct sec_ctx *ctx, struct sec_req *req); 64 void (*do_transfer)(struct sec_ctx *ctx, struct sec_req *req); 65 int (*bd_fill)(struct sec_ctx *ctx, struct sec_req *req); 66 int (*bd_send)(struct sec_ctx *ctx, struct sec_req *req); 67 void (*callback)(struct sec_ctx *ctx, struct sec_req *req); 68 int (*process)(struct sec_ctx *ctx, struct sec_req *req); 69 }; 70 71 /* SEC cipher context which cipher's relatives */ 72 struct sec_cipher_ctx { 73 u8 *c_key; 74 dma_addr_t c_key_dma; 75 sector_t iv_offset; 76 u32 c_gran_size; 77 u32 ivsize; 78 u8 c_mode; 79 u8 c_alg; 80 u8 c_key_len; 81 }; 82 83 /* SEC queue context which defines queue's relatives */ 84 struct sec_qp_ctx { 85 struct hisi_qp *qp; 86 struct sec_req **req_list; 87 struct idr req_idr; 88 void *alg_meta_data; 89 struct sec_ctx *ctx; 90 struct mutex req_lock; 91 struct hisi_acc_sgl_pool *c_in_pool; 92 struct hisi_acc_sgl_pool *c_out_pool; 93 atomic_t pending_reqs; 94 }; 95 96 /* SEC Crypto TFM context which defines queue and cipher .etc relatives */ 97 struct sec_ctx { 98 struct sec_qp_ctx *qp_ctx; 99 struct sec_dev *sec; 100 const struct sec_req_op *req_op; 101 102 /* Half queues for encipher, and half for decipher */ 103 u32 hlf_q_num; 104 105 /* Threshold for fake busy, trigger to return -EBUSY to user */ 106 u32 fake_req_limit; 107 108 /* Currrent cyclic index to select a queue for encipher */ 109 atomic_t enc_qcyclic; 110 111 /* Currrent cyclic index to select a queue for decipher */ 112 atomic_t dec_qcyclic; 113 struct sec_cipher_ctx c_ctx; 114 }; 115 116 enum sec_endian { 117 SEC_LE = 0, 118 SEC_32BE, 119 SEC_64BE 120 }; 121 122 enum sec_debug_file_index { 123 SEC_CURRENT_QM, 124 SEC_CLEAR_ENABLE, 125 SEC_DEBUG_FILE_NUM, 126 }; 127 128 struct sec_debug_file { 129 enum sec_debug_file_index index; 130 spinlock_t lock; 131 struct hisi_qm *qm; 132 }; 133 134 struct sec_dfx { 135 u64 send_cnt; 136 u64 recv_cnt; 137 }; 138 139 struct sec_debug { 140 struct sec_dfx dfx; 141 struct sec_debug_file files[SEC_DEBUG_FILE_NUM]; 142 }; 143 144 struct sec_dev { 145 struct hisi_qm qm; 146 struct list_head list; 147 struct sec_debug debug; 148 u32 ctx_q_num; 149 u32 num_vfs; 150 unsigned long status; 151 }; 152 153 struct sec_dev *sec_find_device(int node); 154 int sec_register_to_crypto(void); 155 void sec_unregister_from_crypto(void); 156 #endif 157