drivers/crypto/hisilicon/sec2/sec.h

   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         u32 num_vfs;
 176         unsigned long status;
 177 };
 178
 179 void sec_destroy_qps(struct hisi_qp **qps, int qp_num);
 180 struct hisi_qp **sec_create_qps(void);
 181 int sec_register_to_crypto(void);
 182 void sec_unregister_from_crypto(void);
 183 #endif