1c942fddfSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2049359d6SJames Hsiao /** 3049359d6SJames Hsiao * AMCC SoC PPC4xx Crypto Driver 4049359d6SJames Hsiao * 5049359d6SJames Hsiao * Copyright (c) 2008 Applied Micro Circuits Corporation. 6049359d6SJames Hsiao * All rights reserved. James Hsiao <jhsiao@amcc.com> 7049359d6SJames Hsiao * 8049359d6SJames Hsiao * This is the header file for AMCC Crypto offload Linux device driver for 9049359d6SJames Hsiao * use with Linux CryptoAPI. 10049359d6SJames Hsiao 11049359d6SJames Hsiao */ 12049359d6SJames Hsiao 13049359d6SJames Hsiao #ifndef __CRYPTO4XX_CORE_H__ 14049359d6SJames Hsiao #define __CRYPTO4XX_CORE_H__ 15049359d6SJames Hsiao 16a0aae821SChristian Lamparter #include <linux/ratelimit.h> 17d072bfa4SChristian Lamparter #include <linux/mutex.h> 184dc10c01SHerbert Xu #include <crypto/internal/hash.h> 19a0aae821SChristian Lamparter #include <crypto/internal/aead.h> 20d072bfa4SChristian Lamparter #include <crypto/internal/rng.h> 21ce05ffe1SChristian Lamparter #include <crypto/internal/skcipher.h> 229e0a0b3aSChristian Lamparter #include "crypto4xx_reg_def.h" 239e0a0b3aSChristian Lamparter #include "crypto4xx_sa.h" 244dc10c01SHerbert Xu 25049359d6SJames Hsiao #define PPC460SX_SDR0_SRST 0x201 26049359d6SJames Hsiao #define PPC405EX_SDR0_SRST 0x200 27049359d6SJames Hsiao #define PPC460EX_SDR0_SRST 0x201 28049359d6SJames Hsiao #define PPC460EX_CE_RESET 0x08000000 29049359d6SJames Hsiao #define PPC460SX_CE_RESET 0x20000000 30049359d6SJames Hsiao #define PPC405EX_CE_RESET 0x00000008 31049359d6SJames Hsiao 32049359d6SJames Hsiao #define CRYPTO4XX_CRYPTO_PRIORITY 300 33778f81d6SChristian Lamparter #define PPC4XX_NUM_PD 256 34778f81d6SChristian Lamparter #define PPC4XX_LAST_PD (PPC4XX_NUM_PD - 1) 35049359d6SJames Hsiao #define PPC4XX_NUM_GD 1024 36778f81d6SChristian Lamparter #define PPC4XX_LAST_GD (PPC4XX_NUM_GD - 1) 37778f81d6SChristian Lamparter #define PPC4XX_NUM_SD 256 38778f81d6SChristian Lamparter #define PPC4XX_LAST_SD (PPC4XX_NUM_SD - 1) 39049359d6SJames Hsiao #define PPC4XX_SD_BUFFER_SIZE 2048 40049359d6SJames Hsiao 418ef8d195SChristian Lamparter #define PD_ENTRY_BUSY BIT(1) 428ef8d195SChristian Lamparter #define PD_ENTRY_INUSE BIT(0) 43049359d6SJames Hsiao #define PD_ENTRY_FREE 0 44049359d6SJames Hsiao #define ERING_WAS_FULL 0xffffffff 45049359d6SJames Hsiao 46049359d6SJames Hsiao struct crypto4xx_device; 47049359d6SJames Hsiao 489e0a0b3aSChristian Lamparter union shadow_sa_buf { 499e0a0b3aSChristian Lamparter struct dynamic_sa_ctl sa; 509e0a0b3aSChristian Lamparter 519e0a0b3aSChristian Lamparter /* alloc 256 bytes which is enough for any kind of dynamic sa */ 529e0a0b3aSChristian Lamparter u8 buf[256]; 539e0a0b3aSChristian Lamparter } __packed; 549e0a0b3aSChristian Lamparter 55049359d6SJames Hsiao struct pd_uinfo { 56049359d6SJames Hsiao struct crypto4xx_device *dev; 57049359d6SJames Hsiao u32 state; 58049359d6SJames Hsiao u32 first_gd; /* first gather discriptor 59049359d6SJames Hsiao used by this packet */ 60049359d6SJames Hsiao u32 num_gd; /* number of gather discriptor 61049359d6SJames Hsiao used by this packet */ 62049359d6SJames Hsiao u32 first_sd; /* first scatter discriptor 63049359d6SJames Hsiao used by this packet */ 64049359d6SJames Hsiao u32 num_sd; /* number of scatter discriptors 65049359d6SJames Hsiao used by this packet */ 669e0a0b3aSChristian Lamparter struct dynamic_sa_ctl *sa_va; /* shadow sa */ 679e0a0b3aSChristian Lamparter struct sa_state_record *sr_va; /* state record for shadow sa */ 68049359d6SJames Hsiao u32 sr_pa; 69049359d6SJames Hsiao struct scatterlist *dest_va; 70049359d6SJames Hsiao struct crypto_async_request *async_req; /* base crypto request 71049359d6SJames Hsiao for this packet */ 72049359d6SJames Hsiao }; 73049359d6SJames Hsiao 74049359d6SJames Hsiao struct crypto4xx_device { 75049359d6SJames Hsiao struct crypto4xx_core_device *core_dev; 76049359d6SJames Hsiao void __iomem *ce_base; 775343e674SChristian Lamparter void __iomem *trng_base; 78049359d6SJames Hsiao 799e0a0b3aSChristian Lamparter struct ce_pd *pdr; /* base address of packet descriptor ring */ 809e0a0b3aSChristian Lamparter dma_addr_t pdr_pa; /* physical address of pdr_base_register */ 819e0a0b3aSChristian Lamparter struct ce_gd *gdr; /* gather descriptor ring */ 829e0a0b3aSChristian Lamparter dma_addr_t gdr_pa; /* physical address of gdr_base_register */ 839e0a0b3aSChristian Lamparter struct ce_sd *sdr; /* scatter descriptor ring */ 849e0a0b3aSChristian Lamparter dma_addr_t sdr_pa; /* physical address of sdr_base_register */ 85049359d6SJames Hsiao void *scatter_buffer_va; 86049359d6SJames Hsiao dma_addr_t scatter_buffer_pa; 87049359d6SJames Hsiao 889e0a0b3aSChristian Lamparter union shadow_sa_buf *shadow_sa_pool; 89049359d6SJames Hsiao dma_addr_t shadow_sa_pool_pa; 909e0a0b3aSChristian Lamparter struct sa_state_record *shadow_sr_pool; 91049359d6SJames Hsiao dma_addr_t shadow_sr_pool_pa; 92049359d6SJames Hsiao u32 pdr_tail; 93049359d6SJames Hsiao u32 pdr_head; 94049359d6SJames Hsiao u32 gdr_tail; 95049359d6SJames Hsiao u32 gdr_head; 96049359d6SJames Hsiao u32 sdr_tail; 97049359d6SJames Hsiao u32 sdr_head; 989e0a0b3aSChristian Lamparter struct pd_uinfo *pdr_uinfo; 99049359d6SJames Hsiao struct list_head alg_list; /* List of algorithm supported 100049359d6SJames Hsiao by this device */ 101a0aae821SChristian Lamparter struct ratelimit_state aead_ratelimit; 102b66c685aSChristian Lamparter bool is_revb; 103049359d6SJames Hsiao }; 104049359d6SJames Hsiao 105049359d6SJames Hsiao struct crypto4xx_core_device { 106049359d6SJames Hsiao struct device *device; 1072dc11581SGrant Likely struct platform_device *ofdev; 108049359d6SJames Hsiao struct crypto4xx_device *dev; 1095343e674SChristian Lamparter struct hwrng *trng; 110049359d6SJames Hsiao u32 int_status; 111049359d6SJames Hsiao u32 irq; 112049359d6SJames Hsiao struct tasklet_struct tasklet; 113049359d6SJames Hsiao spinlock_t lock; 114d072bfa4SChristian Lamparter struct mutex rng_lock; 115049359d6SJames Hsiao }; 116049359d6SJames Hsiao 117049359d6SJames Hsiao struct crypto4xx_ctx { 118049359d6SJames Hsiao struct crypto4xx_device *dev; 1199e0a0b3aSChristian Lamparter struct dynamic_sa_ctl *sa_in; 1209e0a0b3aSChristian Lamparter struct dynamic_sa_ctl *sa_out; 1212f77690dSChristian Lamparter __le32 iv_nonce; 122049359d6SJames Hsiao u32 sa_len; 123a0aae821SChristian Lamparter union { 1249848e4c8SChristian Lamparter struct crypto_sync_skcipher *cipher; 125a0aae821SChristian Lamparter struct crypto_aead *aead; 126a0aae821SChristian Lamparter } sw_cipher; 127049359d6SJames Hsiao }; 128049359d6SJames Hsiao 129658c9d2bSChristian Lamparter struct crypto4xx_aead_reqctx { 130658c9d2bSChristian Lamparter struct scatterlist dst[2]; 131658c9d2bSChristian Lamparter }; 132658c9d2bSChristian Lamparter 1334dc10c01SHerbert Xu struct crypto4xx_alg_common { 1344dc10c01SHerbert Xu u32 type; 1354dc10c01SHerbert Xu union { 136ce05ffe1SChristian Lamparter struct skcipher_alg cipher; 1374dc10c01SHerbert Xu struct ahash_alg hash; 138a0aae821SChristian Lamparter struct aead_alg aead; 139d072bfa4SChristian Lamparter struct rng_alg rng; 1404dc10c01SHerbert Xu } u; 1414dc10c01SHerbert Xu }; 1424dc10c01SHerbert Xu 143049359d6SJames Hsiao struct crypto4xx_alg { 144049359d6SJames Hsiao struct list_head entry; 1454dc10c01SHerbert Xu struct crypto4xx_alg_common alg; 146049359d6SJames Hsiao struct crypto4xx_device *dev; 147049359d6SJames Hsiao }; 148049359d6SJames Hsiao 149886c251fSChristian Lamparter int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size); 150886c251fSChristian Lamparter void crypto4xx_free_sa(struct crypto4xx_ctx *ctx); 151886c251fSChristian Lamparter void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx); 1524865b122SChristian Lamparter int crypto4xx_build_pd(struct crypto_async_request *req, 153049359d6SJames Hsiao struct crypto4xx_ctx *ctx, 154049359d6SJames Hsiao struct scatterlist *src, 155049359d6SJames Hsiao struct scatterlist *dst, 156cd4dcd6dSChristian Lamparter const unsigned int datalen, 157cd4dcd6dSChristian Lamparter const __le32 *iv, const u32 iv_len, 158cd4dcd6dSChristian Lamparter const struct dynamic_sa_ctl *sa, 159a0aae821SChristian Lamparter const unsigned int sa_len, 160658c9d2bSChristian Lamparter const unsigned int assoclen, 161658c9d2bSChristian Lamparter struct scatterlist *dst_tmp); 162ce05ffe1SChristian Lamparter int crypto4xx_setkey_aes_cbc(struct crypto_skcipher *cipher, 163049359d6SJames Hsiao const u8 *key, unsigned int keylen); 164ce05ffe1SChristian Lamparter int crypto4xx_setkey_aes_cfb(struct crypto_skcipher *cipher, 165f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 16698e87e3dSChristian Lamparter int crypto4xx_setkey_aes_ctr(struct crypto_skcipher *cipher, 16798e87e3dSChristian Lamparter const u8 *key, unsigned int keylen); 168ce05ffe1SChristian Lamparter int crypto4xx_setkey_aes_ecb(struct crypto_skcipher *cipher, 169f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 170ce05ffe1SChristian Lamparter int crypto4xx_setkey_aes_ofb(struct crypto_skcipher *cipher, 171f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 172ce05ffe1SChristian Lamparter int crypto4xx_setkey_rfc3686(struct crypto_skcipher *cipher, 173f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 17498e87e3dSChristian Lamparter int crypto4xx_encrypt_ctr(struct skcipher_request *req); 17598e87e3dSChristian Lamparter int crypto4xx_decrypt_ctr(struct skcipher_request *req); 176ce05ffe1SChristian Lamparter int crypto4xx_encrypt_iv(struct skcipher_request *req); 177ce05ffe1SChristian Lamparter int crypto4xx_decrypt_iv(struct skcipher_request *req); 178ce05ffe1SChristian Lamparter int crypto4xx_encrypt_noiv(struct skcipher_request *req); 179ce05ffe1SChristian Lamparter int crypto4xx_decrypt_noiv(struct skcipher_request *req); 180ce05ffe1SChristian Lamparter int crypto4xx_rfc3686_encrypt(struct skcipher_request *req); 181ce05ffe1SChristian Lamparter int crypto4xx_rfc3686_decrypt(struct skcipher_request *req); 182886c251fSChristian Lamparter int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm); 183886c251fSChristian Lamparter int crypto4xx_hash_digest(struct ahash_request *req); 184886c251fSChristian Lamparter int crypto4xx_hash_final(struct ahash_request *req); 185886c251fSChristian Lamparter int crypto4xx_hash_update(struct ahash_request *req); 186886c251fSChristian Lamparter int crypto4xx_hash_init(struct ahash_request *req); 1874865b122SChristian Lamparter 1884865b122SChristian Lamparter /** 1894865b122SChristian Lamparter * Note: Only use this function to copy items that is word aligned. 1904865b122SChristian Lamparter */ 1914865b122SChristian Lamparter static inline void crypto4xx_memcpy_swab32(u32 *dst, const void *buf, 1924865b122SChristian Lamparter size_t len) 1934865b122SChristian Lamparter { 1944865b122SChristian Lamparter for (; len >= 4; buf += 4, len -= 4) 1954865b122SChristian Lamparter *dst++ = __swab32p((u32 *) buf); 1964865b122SChristian Lamparter 1974865b122SChristian Lamparter if (len) { 1984865b122SChristian Lamparter const u8 *tmp = (u8 *)buf; 1994865b122SChristian Lamparter 2004865b122SChristian Lamparter switch (len) { 2014865b122SChristian Lamparter case 3: 2024865b122SChristian Lamparter *dst = (tmp[2] << 16) | 2034865b122SChristian Lamparter (tmp[1] << 8) | 2044865b122SChristian Lamparter tmp[0]; 2054865b122SChristian Lamparter break; 2064865b122SChristian Lamparter case 2: 2074865b122SChristian Lamparter *dst = (tmp[1] << 8) | 2084865b122SChristian Lamparter tmp[0]; 2094865b122SChristian Lamparter break; 2104865b122SChristian Lamparter case 1: 2114865b122SChristian Lamparter *dst = tmp[0]; 2124865b122SChristian Lamparter break; 2134865b122SChristian Lamparter default: 2144865b122SChristian Lamparter break; 2154865b122SChristian Lamparter } 2164865b122SChristian Lamparter } 2174865b122SChristian Lamparter } 2184865b122SChristian Lamparter 2194865b122SChristian Lamparter static inline void crypto4xx_memcpy_from_le32(u32 *dst, const void *buf, 2204865b122SChristian Lamparter size_t len) 2214865b122SChristian Lamparter { 2224865b122SChristian Lamparter crypto4xx_memcpy_swab32(dst, buf, len); 2234865b122SChristian Lamparter } 2244865b122SChristian Lamparter 2254865b122SChristian Lamparter static inline void crypto4xx_memcpy_to_le32(__le32 *dst, const void *buf, 2264865b122SChristian Lamparter size_t len) 2274865b122SChristian Lamparter { 2284865b122SChristian Lamparter crypto4xx_memcpy_swab32((u32 *)dst, buf, len); 2294865b122SChristian Lamparter } 23065ea8b67SChristian Lamparter 23165ea8b67SChristian Lamparter int crypto4xx_setauthsize_aead(struct crypto_aead *ciper, 23265ea8b67SChristian Lamparter unsigned int authsize); 23365ea8b67SChristian Lamparter int crypto4xx_setkey_aes_ccm(struct crypto_aead *cipher, 23465ea8b67SChristian Lamparter const u8 *key, unsigned int keylen); 23565ea8b67SChristian Lamparter int crypto4xx_encrypt_aes_ccm(struct aead_request *req); 23665ea8b67SChristian Lamparter int crypto4xx_decrypt_aes_ccm(struct aead_request *req); 23759231368SChristian Lamparter int crypto4xx_setkey_aes_gcm(struct crypto_aead *cipher, 23859231368SChristian Lamparter const u8 *key, unsigned int keylen); 23959231368SChristian Lamparter int crypto4xx_encrypt_aes_gcm(struct aead_request *req); 24059231368SChristian Lamparter int crypto4xx_decrypt_aes_gcm(struct aead_request *req); 24165ea8b67SChristian Lamparter 242049359d6SJames Hsiao #endif 243