| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Corentin Labbe | 609 | 100.00% | 4 | 100.00% |
| Total | 609 | 4 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * sun8i-ce.h - hardware cryptographic offloader for * Allwinner H3/A64/H5/H2+/H6 SoC * * Copyright (C) 2016-2019 Corentin LABBE <clabbe.montjoie@gmail.com> */ #include <crypto/aes.h> #include <crypto/des.h> #include <crypto/engine.h> #include <crypto/skcipher.h> #include <linux/atomic.h> #include <linux/debugfs.h> #include <linux/crypto.h> /* CE Registers */ #define CE_TDQ 0x00 #define CE_CTR 0x04 #define CE_ICR 0x08 #define CE_ISR 0x0C #define CE_TLR 0x10 #define CE_TSR 0x14 #define CE_ESR 0x18 #define CE_CSSGR 0x1C #define CE_CDSGR 0x20 #define CE_CSAR 0x24 #define CE_CDAR 0x28 #define CE_TPR 0x2C /* Used in struct ce_task */ /* ce_task common */ #define CE_ENCRYPTION 0 #define CE_DECRYPTION BIT(8) #define CE_COMM_INT BIT(31) /* ce_task symmetric */ #define CE_AES_128BITS 0 #define CE_AES_192BITS 1 #define CE_AES_256BITS 2 #define CE_OP_ECB 0 #define CE_OP_CBC (1 << 8) #define CE_ALG_AES 0 #define CE_ALG_DES 1 #define CE_ALG_3DES 2 /* Used in ce_variant */ #define CE_ID_NOTSUPP 0xFF #define CE_ID_CIPHER_AES 0 #define CE_ID_CIPHER_DES 1 #define CE_ID_CIPHER_DES3 2 #define CE_ID_CIPHER_MAX 3 #define CE_ID_OP_ECB 0 #define CE_ID_OP_CBC 1 #define CE_ID_OP_MAX 2 /* Used in CE registers */ #define CE_ERR_ALGO_NOTSUP BIT(0) #define CE_ERR_DATALEN BIT(1) #define CE_ERR_KEYSRAM BIT(2) #define CE_ERR_ADDR_INVALID BIT(5) #define CE_ERR_KEYLADDER BIT(6) #define CE_DIE_ID_SHIFT 16 #define CE_DIE_ID_MASK 0x07 #define MAX_SG 8 #define CE_MAX_CLOCKS 3 #define MAXFLOW 4 /* * struct ce_clock - Describe clocks used by sun8i-ce * @name: Name of clock needed by this variant * @freq: Frequency to set for each clock * @max_freq: Maximum frequency for each clock (generally given by datasheet) */ struct ce_clock { const char *name; unsigned long freq; unsigned long max_freq; }; /* * struct ce_variant - Describe CE capability for each variant hardware * @alg_cipher: list of supported ciphers. for each CE_ID_ this will give the * coresponding CE_ALG_XXX value * @op_mode: list of supported block modes * @has_t_dlen_in_bytes: Does the request size for cipher is in * bytes or words * @ce_clks: list of clocks needed by this variant */ struct ce_variant { char alg_cipher[CE_ID_CIPHER_MAX]; u32 op_mode[CE_ID_OP_MAX]; bool has_t_dlen_in_bytes; struct ce_clock ce_clks[CE_MAX_CLOCKS]; }; struct sginfo { __le32 addr; __le32 len; } __packed; /* * struct ce_task - CE Task descriptor * The structure of this descriptor could be found in the datasheet */ struct ce_task { __le32 t_id; __le32 t_common_ctl; __le32 t_sym_ctl; __le32 t_asym_ctl; __le32 t_key; __le32 t_iv; __le32 t_ctr; __le32 t_dlen; struct sginfo t_src[MAX_SG]; struct sginfo t_dst[MAX_SG]; __le32 next; __le32 reserved[3]; } __packed __aligned(8); /* * struct sun8i_ce_flow - Information used by each flow * @engine: ptr to the crypto_engine for this flow * @bounce_iv: buffer which contain the IV * @ivlen: size of bounce_iv * @complete: completion for the current task on this flow * @status: set to 1 by interrupt if task is done * @t_phy: Physical address of task * @tl: pointer to the current ce_task for this flow * @stat_req: number of request done by this flow */ struct sun8i_ce_flow { struct crypto_engine *engine; void *bounce_iv; unsigned int ivlen; struct completion complete; int status; dma_addr_t t_phy; int timeout; struct ce_task *tl; #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG unsigned long stat_req; #endif }; /* * struct sun8i_ce_dev - main container for all this driver information * @base: base address of CE * @ceclks: clocks used by CE * @reset: pointer to reset controller * @dev: the platform device * @mlock: Control access to device registers * @chanlist: array of all flow * @flow: flow to use in next request * @variant: pointer to variant specific data * @dbgfs_dir: Debugfs dentry for statistic directory * @dbgfs_stats: Debugfs dentry for statistic counters */ struct sun8i_ce_dev { void __iomem *base; struct clk *ceclks[CE_MAX_CLOCKS]; struct reset_control *reset; struct device *dev; struct mutex mlock; struct sun8i_ce_flow *chanlist; atomic_t flow; const struct ce_variant *variant; #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG struct dentry *dbgfs_dir; struct dentry *dbgfs_stats; #endif }; /* * struct sun8i_cipher_req_ctx - context for a skcipher request * @op_dir: direction (encrypt vs decrypt) for this request * @flow: the flow to use for this request */ struct sun8i_cipher_req_ctx { u32 op_dir; int flow; }; /* * struct sun8i_cipher_tfm_ctx - context for a skcipher TFM * @enginectx: crypto_engine used by this TFM * @key: pointer to key data * @keylen: len of the key * @ce: pointer to the private data of driver handling this TFM * @fallback_tfm: pointer to the fallback TFM */ struct sun8i_cipher_tfm_ctx { struct crypto_engine_ctx enginectx; u32 *key; u32 keylen; struct sun8i_ce_dev *ce; struct crypto_sync_skcipher *fallback_tfm; }; /* * struct sun8i_ce_alg_template - crypto_alg template * @type: the CRYPTO_ALG_TYPE for this template * @ce_algo_id: the CE_ID for this template * @ce_blockmode: the type of block operation CE_ID * @ce: pointer to the sun8i_ce_dev structure associated with * this template * @alg: one of sub struct must be used * @stat_req: number of request done on this template * @stat_fb: number of request which has fallbacked */ struct sun8i_ce_alg_template { u32 type; u32 ce_algo_id; u32 ce_blockmode; struct sun8i_ce_dev *ce; union { struct skcipher_alg skcipher; } alg; #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG unsigned long stat_req; unsigned long stat_fb; #endif }; int sun8i_ce_enqueue(struct crypto_async_request *areq, u32 type); int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen); int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen); int sun8i_ce_cipher_init(struct crypto_tfm *tfm); void sun8i_ce_cipher_exit(struct crypto_tfm *tfm); int sun8i_ce_skdecrypt(struct skcipher_request *areq); int sun8i_ce_skencrypt(struct skcipher_request *areq); int sun8i_ce_get_engine_number(struct sun8i_ce_dev *ce); int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name);
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