1049359d6SJames Hsiao /** 2049359d6SJames Hsiao * AMCC SoC PPC4xx Crypto Driver 3049359d6SJames Hsiao * 4049359d6SJames Hsiao * Copyright (c) 2008 Applied Micro Circuits Corporation. 5049359d6SJames Hsiao * All rights reserved. James Hsiao <jhsiao@amcc.com> 6049359d6SJames Hsiao * 7049359d6SJames Hsiao * This program is free software; you can redistribute it and/or modify 8049359d6SJames Hsiao * it under the terms of the GNU General Public License as published by 9049359d6SJames Hsiao * the Free Software Foundation; either version 2 of the License, or 10049359d6SJames Hsiao * (at your option) any later version. 11049359d6SJames Hsiao * 12049359d6SJames Hsiao * This program is distributed in the hope that it will be useful, 13049359d6SJames Hsiao * but WITHOUT ANY WARRANTY; without even the implied warranty of 14049359d6SJames Hsiao * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15049359d6SJames Hsiao * GNU General Public License for more details. 16049359d6SJames Hsiao * 17049359d6SJames Hsiao * This is the header file for AMCC Crypto offload Linux device driver for 18049359d6SJames Hsiao * use with Linux CryptoAPI. 19049359d6SJames Hsiao 20049359d6SJames Hsiao */ 21049359d6SJames Hsiao 22049359d6SJames Hsiao #ifndef __CRYPTO4XX_CORE_H__ 23049359d6SJames Hsiao #define __CRYPTO4XX_CORE_H__ 24049359d6SJames Hsiao 254dc10c01SHerbert Xu #include <crypto/internal/hash.h> 269e0a0b3aSChristian Lamparter #include "crypto4xx_reg_def.h" 279e0a0b3aSChristian Lamparter #include "crypto4xx_sa.h" 284dc10c01SHerbert Xu 295343e674SChristian Lamparter #define MODULE_NAME "crypto4xx" 305343e674SChristian Lamparter 31049359d6SJames Hsiao #define PPC460SX_SDR0_SRST 0x201 32049359d6SJames Hsiao #define PPC405EX_SDR0_SRST 0x200 33049359d6SJames Hsiao #define PPC460EX_SDR0_SRST 0x201 34049359d6SJames Hsiao #define PPC460EX_CE_RESET 0x08000000 35049359d6SJames Hsiao #define PPC460SX_CE_RESET 0x20000000 36049359d6SJames Hsiao #define PPC405EX_CE_RESET 0x00000008 37049359d6SJames Hsiao 38049359d6SJames Hsiao #define CRYPTO4XX_CRYPTO_PRIORITY 300 39778f81d6SChristian Lamparter #define PPC4XX_NUM_PD 256 40778f81d6SChristian Lamparter #define PPC4XX_LAST_PD (PPC4XX_NUM_PD - 1) 41049359d6SJames Hsiao #define PPC4XX_NUM_GD 1024 42778f81d6SChristian Lamparter #define PPC4XX_LAST_GD (PPC4XX_NUM_GD - 1) 43778f81d6SChristian Lamparter #define PPC4XX_NUM_SD 256 44778f81d6SChristian Lamparter #define PPC4XX_LAST_SD (PPC4XX_NUM_SD - 1) 45049359d6SJames Hsiao #define PPC4XX_SD_BUFFER_SIZE 2048 46049359d6SJames Hsiao 478ef8d195SChristian Lamparter #define PD_ENTRY_BUSY BIT(1) 488ef8d195SChristian Lamparter #define PD_ENTRY_INUSE BIT(0) 49049359d6SJames Hsiao #define PD_ENTRY_FREE 0 50049359d6SJames Hsiao #define ERING_WAS_FULL 0xffffffff 51049359d6SJames Hsiao 52049359d6SJames Hsiao struct crypto4xx_device; 53049359d6SJames Hsiao 549e0a0b3aSChristian Lamparter union shadow_sa_buf { 559e0a0b3aSChristian Lamparter struct dynamic_sa_ctl sa; 569e0a0b3aSChristian Lamparter 579e0a0b3aSChristian Lamparter /* alloc 256 bytes which is enough for any kind of dynamic sa */ 589e0a0b3aSChristian Lamparter u8 buf[256]; 599e0a0b3aSChristian Lamparter } __packed; 609e0a0b3aSChristian Lamparter 61049359d6SJames Hsiao struct pd_uinfo { 62049359d6SJames Hsiao struct crypto4xx_device *dev; 63049359d6SJames Hsiao u32 state; 64049359d6SJames Hsiao u32 using_sd; 65049359d6SJames Hsiao u32 first_gd; /* first gather discriptor 66049359d6SJames Hsiao used by this packet */ 67049359d6SJames Hsiao u32 num_gd; /* number of gather discriptor 68049359d6SJames Hsiao used by this packet */ 69049359d6SJames Hsiao u32 first_sd; /* first scatter discriptor 70049359d6SJames Hsiao used by this packet */ 71049359d6SJames Hsiao u32 num_sd; /* number of scatter discriptors 72049359d6SJames Hsiao used by this packet */ 739e0a0b3aSChristian Lamparter struct dynamic_sa_ctl *sa_va; /* shadow sa */ 749e0a0b3aSChristian Lamparter struct sa_state_record *sr_va; /* state record for shadow sa */ 75049359d6SJames Hsiao u32 sr_pa; 76049359d6SJames Hsiao struct scatterlist *dest_va; 77049359d6SJames Hsiao struct crypto_async_request *async_req; /* base crypto request 78049359d6SJames Hsiao for this packet */ 79049359d6SJames Hsiao }; 80049359d6SJames Hsiao 81049359d6SJames Hsiao struct crypto4xx_device { 82049359d6SJames Hsiao struct crypto4xx_core_device *core_dev; 83049359d6SJames Hsiao char *name; 84049359d6SJames Hsiao void __iomem *ce_base; 855343e674SChristian Lamparter void __iomem *trng_base; 86049359d6SJames Hsiao 879e0a0b3aSChristian Lamparter struct ce_pd *pdr; /* base address of packet descriptor ring */ 889e0a0b3aSChristian Lamparter dma_addr_t pdr_pa; /* physical address of pdr_base_register */ 899e0a0b3aSChristian Lamparter struct ce_gd *gdr; /* gather descriptor ring */ 909e0a0b3aSChristian Lamparter dma_addr_t gdr_pa; /* physical address of gdr_base_register */ 919e0a0b3aSChristian Lamparter struct ce_sd *sdr; /* scatter descriptor ring */ 929e0a0b3aSChristian Lamparter dma_addr_t sdr_pa; /* physical address of sdr_base_register */ 93049359d6SJames Hsiao void *scatter_buffer_va; 94049359d6SJames Hsiao dma_addr_t scatter_buffer_pa; 95049359d6SJames Hsiao 969e0a0b3aSChristian Lamparter union shadow_sa_buf *shadow_sa_pool; 97049359d6SJames Hsiao dma_addr_t shadow_sa_pool_pa; 989e0a0b3aSChristian Lamparter struct sa_state_record *shadow_sr_pool; 99049359d6SJames Hsiao dma_addr_t shadow_sr_pool_pa; 100049359d6SJames Hsiao u32 pdr_tail; 101049359d6SJames Hsiao u32 pdr_head; 102049359d6SJames Hsiao u32 gdr_tail; 103049359d6SJames Hsiao u32 gdr_head; 104049359d6SJames Hsiao u32 sdr_tail; 105049359d6SJames Hsiao u32 sdr_head; 1069e0a0b3aSChristian Lamparter struct pd_uinfo *pdr_uinfo; 107049359d6SJames Hsiao struct list_head alg_list; /* List of algorithm supported 108049359d6SJames Hsiao by this device */ 109049359d6SJames Hsiao }; 110049359d6SJames Hsiao 111049359d6SJames Hsiao struct crypto4xx_core_device { 112049359d6SJames Hsiao struct device *device; 1132dc11581SGrant Likely struct platform_device *ofdev; 114049359d6SJames Hsiao struct crypto4xx_device *dev; 1155343e674SChristian Lamparter struct hwrng *trng; 116049359d6SJames Hsiao u32 int_status; 117049359d6SJames Hsiao u32 irq; 118049359d6SJames Hsiao struct tasklet_struct tasklet; 119049359d6SJames Hsiao spinlock_t lock; 120049359d6SJames Hsiao }; 121049359d6SJames Hsiao 122049359d6SJames Hsiao struct crypto4xx_ctx { 123049359d6SJames Hsiao struct crypto4xx_device *dev; 1249e0a0b3aSChristian Lamparter struct dynamic_sa_ctl *sa_in; 1259e0a0b3aSChristian Lamparter struct dynamic_sa_ctl *sa_out; 1262f77690dSChristian Lamparter __le32 iv_nonce; 127049359d6SJames Hsiao u32 sa_len; 128049359d6SJames Hsiao }; 129049359d6SJames Hsiao 1304dc10c01SHerbert Xu struct crypto4xx_alg_common { 1314dc10c01SHerbert Xu u32 type; 1324dc10c01SHerbert Xu union { 1334dc10c01SHerbert Xu struct crypto_alg cipher; 1344dc10c01SHerbert Xu struct ahash_alg hash; 1354dc10c01SHerbert Xu } u; 1364dc10c01SHerbert Xu }; 1374dc10c01SHerbert Xu 138049359d6SJames Hsiao struct crypto4xx_alg { 139049359d6SJames Hsiao struct list_head entry; 1404dc10c01SHerbert Xu struct crypto4xx_alg_common alg; 141049359d6SJames Hsiao struct crypto4xx_device *dev; 142049359d6SJames Hsiao }; 143049359d6SJames Hsiao 1444dc10c01SHerbert Xu static inline struct crypto4xx_alg *crypto_alg_to_crypto4xx_alg( 1454dc10c01SHerbert Xu struct crypto_alg *x) 1464dc10c01SHerbert Xu { 1474dc10c01SHerbert Xu switch (x->cra_flags & CRYPTO_ALG_TYPE_MASK) { 1484dc10c01SHerbert Xu case CRYPTO_ALG_TYPE_AHASH: 1494dc10c01SHerbert Xu return container_of(__crypto_ahash_alg(x), 1504dc10c01SHerbert Xu struct crypto4xx_alg, alg.u.hash); 1514dc10c01SHerbert Xu } 1524dc10c01SHerbert Xu 1534dc10c01SHerbert Xu return container_of(x, struct crypto4xx_alg, alg.u.cipher); 1544dc10c01SHerbert Xu } 155049359d6SJames Hsiao 156886c251fSChristian Lamparter int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size); 157886c251fSChristian Lamparter void crypto4xx_free_sa(struct crypto4xx_ctx *ctx); 158886c251fSChristian Lamparter void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx); 1594865b122SChristian Lamparter int crypto4xx_build_pd(struct crypto_async_request *req, 160049359d6SJames Hsiao struct crypto4xx_ctx *ctx, 161049359d6SJames Hsiao struct scatterlist *src, 162049359d6SJames Hsiao struct scatterlist *dst, 163cd4dcd6dSChristian Lamparter const unsigned int datalen, 164cd4dcd6dSChristian Lamparter const __le32 *iv, const u32 iv_len, 165cd4dcd6dSChristian Lamparter const struct dynamic_sa_ctl *sa, 166cd4dcd6dSChristian Lamparter const unsigned int sa_len); 167886c251fSChristian Lamparter int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher, 168049359d6SJames Hsiao const u8 *key, unsigned int keylen); 169f2a13e7cSChristian Lamparter int crypto4xx_setkey_aes_cfb(struct crypto_ablkcipher *cipher, 170f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 171f2a13e7cSChristian Lamparter int crypto4xx_setkey_aes_ecb(struct crypto_ablkcipher *cipher, 172f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 173f2a13e7cSChristian Lamparter int crypto4xx_setkey_aes_ofb(struct crypto_ablkcipher *cipher, 174f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 175f2a13e7cSChristian Lamparter int crypto4xx_setkey_rfc3686(struct crypto_ablkcipher *cipher, 176f2a13e7cSChristian Lamparter const u8 *key, unsigned int keylen); 177886c251fSChristian Lamparter int crypto4xx_encrypt(struct ablkcipher_request *req); 178886c251fSChristian Lamparter int crypto4xx_decrypt(struct ablkcipher_request *req); 179f2a13e7cSChristian Lamparter int crypto4xx_rfc3686_encrypt(struct ablkcipher_request *req); 180f2a13e7cSChristian Lamparter int crypto4xx_rfc3686_decrypt(struct ablkcipher_request *req); 181886c251fSChristian Lamparter int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm); 182886c251fSChristian Lamparter int crypto4xx_hash_digest(struct ahash_request *req); 183886c251fSChristian Lamparter int crypto4xx_hash_final(struct ahash_request *req); 184886c251fSChristian Lamparter int crypto4xx_hash_update(struct ahash_request *req); 185886c251fSChristian Lamparter int crypto4xx_hash_init(struct ahash_request *req); 1864865b122SChristian Lamparter 1874865b122SChristian Lamparter /** 1884865b122SChristian Lamparter * Note: Only use this function to copy items that is word aligned. 1894865b122SChristian Lamparter */ 1904865b122SChristian Lamparter static inline void crypto4xx_memcpy_swab32(u32 *dst, const void *buf, 1914865b122SChristian Lamparter size_t len) 1924865b122SChristian Lamparter { 1934865b122SChristian Lamparter for (; len >= 4; buf += 4, len -= 4) 1944865b122SChristian Lamparter *dst++ = __swab32p((u32 *) buf); 1954865b122SChristian Lamparter 1964865b122SChristian Lamparter if (len) { 1974865b122SChristian Lamparter const u8 *tmp = (u8 *)buf; 1984865b122SChristian Lamparter 1994865b122SChristian Lamparter switch (len) { 2004865b122SChristian Lamparter case 3: 2014865b122SChristian Lamparter *dst = (tmp[2] << 16) | 2024865b122SChristian Lamparter (tmp[1] << 8) | 2034865b122SChristian Lamparter tmp[0]; 2044865b122SChristian Lamparter break; 2054865b122SChristian Lamparter case 2: 2064865b122SChristian Lamparter *dst = (tmp[1] << 8) | 2074865b122SChristian Lamparter tmp[0]; 2084865b122SChristian Lamparter break; 2094865b122SChristian Lamparter case 1: 2104865b122SChristian Lamparter *dst = tmp[0]; 2114865b122SChristian Lamparter break; 2124865b122SChristian Lamparter default: 2134865b122SChristian Lamparter break; 2144865b122SChristian Lamparter } 2154865b122SChristian Lamparter } 2164865b122SChristian Lamparter } 2174865b122SChristian Lamparter 2184865b122SChristian Lamparter static inline void crypto4xx_memcpy_from_le32(u32 *dst, const void *buf, 2194865b122SChristian Lamparter size_t len) 2204865b122SChristian Lamparter { 2214865b122SChristian Lamparter crypto4xx_memcpy_swab32(dst, buf, len); 2224865b122SChristian Lamparter } 2234865b122SChristian Lamparter 2244865b122SChristian Lamparter static inline void crypto4xx_memcpy_to_le32(__le32 *dst, const void *buf, 2254865b122SChristian Lamparter size_t len) 2264865b122SChristian Lamparter { 2274865b122SChristian Lamparter crypto4xx_memcpy_swab32((u32 *)dst, buf, len); 2284865b122SChristian Lamparter } 229049359d6SJames Hsiao #endif 230