James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 1 | /** |
| 2 | * AMCC SoC PPC4xx Crypto Driver |
| 3 | * |
| 4 | * Copyright (c) 2008 Applied Micro Circuits Corporation. |
| 5 | * All rights reserved. James Hsiao <jhsiao@amcc.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * This is the header file for AMCC Crypto offload Linux device driver for |
| 18 | * use with Linux CryptoAPI. |
| 19 | |
| 20 | */ |
| 21 | |
| 22 | #ifndef __CRYPTO4XX_CORE_H__ |
| 23 | #define __CRYPTO4XX_CORE_H__ |
| 24 | |
Herbert Xu | 4dc10c0 | 2009-07-14 20:21:46 +0800 | [diff] [blame] | 25 | #include <crypto/internal/hash.h> |
| 26 | |
Christian Lamparter | 5343e67 | 2016-04-18 12:57:41 +0200 | [diff] [blame] | 27 | #define MODULE_NAME "crypto4xx" |
| 28 | |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 29 | #define PPC460SX_SDR0_SRST 0x201 |
| 30 | #define PPC405EX_SDR0_SRST 0x200 |
| 31 | #define PPC460EX_SDR0_SRST 0x201 |
| 32 | #define PPC460EX_CE_RESET 0x08000000 |
| 33 | #define PPC460SX_CE_RESET 0x20000000 |
| 34 | #define PPC405EX_CE_RESET 0x00000008 |
| 35 | |
| 36 | #define CRYPTO4XX_CRYPTO_PRIORITY 300 |
Christian Lamparter | 1525e33 | 2017-10-04 01:00:08 +0200 | [diff] [blame] | 37 | #define PPC4XX_NUM_PD 256 |
| 38 | #define PPC4XX_LAST_PD (PPC4XX_NUM_PD - 1) |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 39 | #define PPC4XX_NUM_GD 1024 |
Christian Lamparter | 1525e33 | 2017-10-04 01:00:08 +0200 | [diff] [blame] | 40 | #define PPC4XX_LAST_GD (PPC4XX_NUM_GD - 1) |
| 41 | #define PPC4XX_NUM_SD 256 |
| 42 | #define PPC4XX_LAST_SD (PPC4XX_NUM_SD - 1) |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 43 | #define PPC4XX_SD_BUFFER_SIZE 2048 |
| 44 | |
| 45 | #define PD_ENTRY_INUSE 1 |
| 46 | #define PD_ENTRY_FREE 0 |
| 47 | #define ERING_WAS_FULL 0xffffffff |
| 48 | |
| 49 | struct crypto4xx_device; |
| 50 | |
| 51 | struct pd_uinfo { |
| 52 | struct crypto4xx_device *dev; |
| 53 | u32 state; |
| 54 | u32 using_sd; |
| 55 | u32 first_gd; /* first gather discriptor |
| 56 | used by this packet */ |
| 57 | u32 num_gd; /* number of gather discriptor |
| 58 | used by this packet */ |
| 59 | u32 first_sd; /* first scatter discriptor |
| 60 | used by this packet */ |
| 61 | u32 num_sd; /* number of scatter discriptors |
| 62 | used by this packet */ |
| 63 | void *sa_va; /* shadow sa, when using cp from ctx->sa */ |
| 64 | u32 sa_pa; |
| 65 | void *sr_va; /* state record for shadow sa */ |
| 66 | u32 sr_pa; |
| 67 | struct scatterlist *dest_va; |
| 68 | struct crypto_async_request *async_req; /* base crypto request |
| 69 | for this packet */ |
| 70 | }; |
| 71 | |
| 72 | struct crypto4xx_device { |
| 73 | struct crypto4xx_core_device *core_dev; |
| 74 | char *name; |
| 75 | u64 ce_phy_address; |
| 76 | void __iomem *ce_base; |
Christian Lamparter | 5343e67 | 2016-04-18 12:57:41 +0200 | [diff] [blame] | 77 | void __iomem *trng_base; |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 78 | |
| 79 | void *pdr; /* base address of packet |
| 80 | descriptor ring */ |
| 81 | dma_addr_t pdr_pa; /* physical address used to |
| 82 | program ce pdr_base_register */ |
| 83 | void *gdr; /* gather descriptor ring */ |
| 84 | dma_addr_t gdr_pa; /* physical address used to |
| 85 | program ce gdr_base_register */ |
| 86 | void *sdr; /* scatter descriptor ring */ |
| 87 | dma_addr_t sdr_pa; /* physical address used to |
| 88 | program ce sdr_base_register */ |
| 89 | void *scatter_buffer_va; |
| 90 | dma_addr_t scatter_buffer_pa; |
| 91 | u32 scatter_buffer_size; |
| 92 | |
| 93 | void *shadow_sa_pool; /* pool of memory for sa in pd_uinfo */ |
| 94 | dma_addr_t shadow_sa_pool_pa; |
| 95 | void *shadow_sr_pool; /* pool of memory for sr in pd_uinfo */ |
| 96 | dma_addr_t shadow_sr_pool_pa; |
| 97 | u32 pdr_tail; |
| 98 | u32 pdr_head; |
| 99 | u32 gdr_tail; |
| 100 | u32 gdr_head; |
| 101 | u32 sdr_tail; |
| 102 | u32 sdr_head; |
| 103 | void *pdr_uinfo; |
| 104 | struct list_head alg_list; /* List of algorithm supported |
| 105 | by this device */ |
| 106 | }; |
| 107 | |
| 108 | struct crypto4xx_core_device { |
| 109 | struct device *device; |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 110 | struct platform_device *ofdev; |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 111 | struct crypto4xx_device *dev; |
Christian Lamparter | 5343e67 | 2016-04-18 12:57:41 +0200 | [diff] [blame] | 112 | struct hwrng *trng; |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 113 | u32 int_status; |
| 114 | u32 irq; |
| 115 | struct tasklet_struct tasklet; |
| 116 | spinlock_t lock; |
| 117 | }; |
| 118 | |
| 119 | struct crypto4xx_ctx { |
| 120 | struct crypto4xx_device *dev; |
| 121 | void *sa_in; |
| 122 | dma_addr_t sa_in_dma_addr; |
| 123 | void *sa_out; |
| 124 | dma_addr_t sa_out_dma_addr; |
| 125 | void *state_record; |
| 126 | dma_addr_t state_record_dma_addr; |
| 127 | u32 sa_len; |
| 128 | u32 offset_to_sr_ptr; /* offset to state ptr, in dynamic sa */ |
| 129 | u32 direction; |
| 130 | u32 next_hdr; |
| 131 | u32 save_iv; |
| 132 | u32 pd_ctl_len; |
| 133 | u32 pd_ctl; |
| 134 | u32 bypass; |
| 135 | u32 is_hash; |
| 136 | u32 hash_final; |
| 137 | }; |
| 138 | |
| 139 | struct crypto4xx_req_ctx { |
| 140 | struct crypto4xx_device *dev; /* Device in which |
| 141 | operation to send to */ |
| 142 | void *sa; |
| 143 | u32 sa_dma_addr; |
| 144 | u16 sa_len; |
| 145 | }; |
| 146 | |
Herbert Xu | 4dc10c0 | 2009-07-14 20:21:46 +0800 | [diff] [blame] | 147 | struct crypto4xx_alg_common { |
| 148 | u32 type; |
| 149 | union { |
| 150 | struct crypto_alg cipher; |
| 151 | struct ahash_alg hash; |
| 152 | } u; |
| 153 | }; |
| 154 | |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 155 | struct crypto4xx_alg { |
| 156 | struct list_head entry; |
Herbert Xu | 4dc10c0 | 2009-07-14 20:21:46 +0800 | [diff] [blame] | 157 | struct crypto4xx_alg_common alg; |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 158 | struct crypto4xx_device *dev; |
| 159 | }; |
| 160 | |
Herbert Xu | 4dc10c0 | 2009-07-14 20:21:46 +0800 | [diff] [blame] | 161 | static inline struct crypto4xx_alg *crypto_alg_to_crypto4xx_alg( |
| 162 | struct crypto_alg *x) |
| 163 | { |
| 164 | switch (x->cra_flags & CRYPTO_ALG_TYPE_MASK) { |
| 165 | case CRYPTO_ALG_TYPE_AHASH: |
| 166 | return container_of(__crypto_ahash_alg(x), |
| 167 | struct crypto4xx_alg, alg.u.hash); |
| 168 | } |
| 169 | |
| 170 | return container_of(x, struct crypto4xx_alg, alg.u.cipher); |
| 171 | } |
James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 172 | |
| 173 | extern int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size); |
| 174 | extern void crypto4xx_free_sa(struct crypto4xx_ctx *ctx); |
| 175 | extern u32 crypto4xx_alloc_sa_rctx(struct crypto4xx_ctx *ctx, |
| 176 | struct crypto4xx_ctx *rctx); |
| 177 | extern void crypto4xx_free_sa_rctx(struct crypto4xx_ctx *rctx); |
| 178 | extern void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx); |
| 179 | extern u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx); |
| 180 | extern u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx); |
| 181 | extern u32 get_dynamic_sa_offset_key_field(struct crypto4xx_ctx *ctx); |
| 182 | extern u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx); |
| 183 | extern void crypto4xx_memcpy_le(unsigned int *dst, |
| 184 | const unsigned char *buf, int len); |
| 185 | extern u32 crypto4xx_build_pd(struct crypto_async_request *req, |
| 186 | struct crypto4xx_ctx *ctx, |
| 187 | struct scatterlist *src, |
| 188 | struct scatterlist *dst, |
| 189 | unsigned int datalen, |
| 190 | void *iv, u32 iv_len); |
| 191 | extern int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher, |
| 192 | const u8 *key, unsigned int keylen); |
| 193 | extern int crypto4xx_encrypt(struct ablkcipher_request *req); |
| 194 | extern int crypto4xx_decrypt(struct ablkcipher_request *req); |
| 195 | extern int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm); |
| 196 | extern int crypto4xx_hash_digest(struct ahash_request *req); |
| 197 | extern int crypto4xx_hash_final(struct ahash_request *req); |
| 198 | extern int crypto4xx_hash_update(struct ahash_request *req); |
| 199 | extern int crypto4xx_hash_init(struct ahash_request *req); |
| 200 | #endif |