#ifndef __NX_H__ #define __NX_H__ #include <crypto/ctr.h> #define NX_NAME "nx-crypto" #define NX_STRING "IBM Power7+ Nest Accelerator Crypto Driver" #define NX_VERSION "1.0" static const char nx_driver_string[] = NX_STRING; static const char nx_driver_version[] = NX_VERSION; /* a scatterlist in the format PHYP is expecting */ struct nx_sg { u64 addr; u32 rsvd; u32 len; } __attribute((packed)); #define NX_PAGE_SIZE (4096) #define NX_MAX_SG_ENTRIES (NX_PAGE_SIZE/(sizeof(struct nx_sg))) enum nx_status { NX_DISABLED, NX_WAITING, NX_OKAY }; /* msc_triplet and max_sync_cop are used only to assist in parsing the * openFirmware property */ struct msc_triplet { u32 keybitlen; u32 databytelen; u32 sglen; } __packed; struct max_sync_cop { u32 fc; u32 mode; u32 triplets; struct msc_triplet trip[0]; } __packed; struct alg_props { u32 databytelen; u32 sglen; }; #define NX_OF_FLAG_MAXSGLEN_SET (1) #define NX_OF_FLAG_STATUS_SET (2) #define NX_OF_FLAG_MAXSYNCCOP_SET (4) #define NX_OF_FLAG_MASK_READY (NX_OF_FLAG_MAXSGLEN_SET | \ NX_OF_FLAG_STATUS_SET | \ NX_OF_FLAG_MAXSYNCCOP_SET) struct nx_of { u32 flags; u32 max_sg_len; enum nx_status status; struct alg_props ap[NX_MAX_FC][NX_MAX_MODE][3]; }; struct nx_stats { atomic_t aes_ops; atomic64_t aes_bytes; atomic_t sha256_ops; atomic64_t sha256_bytes; atomic_t sha512_ops; atomic64_t sha512_bytes; atomic_t sync_ops; atomic_t errors; atomic_t last_error; atomic_t last_error_pid; }; struct nx_debugfs { struct dentry *dfs_root; struct dentry *dfs_aes_ops, *dfs_aes_bytes; struct dentry *dfs_sha256_ops, *dfs_sha256_bytes; struct dentry *dfs_sha512_ops, *dfs_sha512_bytes; struct dentry *dfs_errors, *dfs_last_error, *dfs_last_error_pid; }; struct nx_crypto_driver { struct nx_stats stats; struct nx_of of; struct vio_dev *viodev; struct vio_driver viodriver; struct nx_debugfs dfs; }; #define NX_GCM4106_NONCE_LEN (4) #define NX_GCM_CTR_OFFSET (12) struct nx_gcm_rctx { u8 iv[16]; }; struct nx_gcm_priv { u8 iauth_tag[16]; u8 nonce[NX_GCM4106_NONCE_LEN]; }; #define NX_CCM_AES_KEY_LEN (16) #define NX_CCM4309_AES_KEY_LEN (19) #define NX_CCM4309_NONCE_LEN (3) struct nx_ccm_rctx { u8 iv[16]; }; struct nx_ccm_priv { u8 b0[16]; u8 iauth_tag[16]; u8 oauth_tag[16]; u8 nonce[NX_CCM4309_NONCE_LEN]; }; struct nx_xcbc_priv { u8 key[16]; }; struct nx_ctr_priv { u8 nonce[CTR_RFC3686_NONCE_SIZE]; }; struct nx_crypto_ctx { spinlock_t lock; /* synchronize access to the context */ void *kmem; /* unaligned, kmalloc'd buffer */ size_t kmem_len; /* length of kmem */ struct nx_csbcpb *csbcpb; /* aligned page given to phyp @ hcall time */ struct vio_pfo_op op; /* operation struct with hcall parameters */ struct nx_csbcpb *csbcpb_aead; /* secondary csbcpb used by AEAD algs */ struct vio_pfo_op op_aead;/* operation struct for csbcpb_aead */ struct nx_sg *in_sg; /* aligned pointer into kmem to an sg list */ struct nx_sg *out_sg; /* aligned pointer into kmem to an sg list */ struct alg_props *ap; /* pointer into props based on our key size */ struct alg_props props[3];/* openFirmware properties for requests */ struct nx_stats *stats; /* pointer into an nx_crypto_driver for stats reporting */ union { struct nx_gcm_priv gcm; struct nx_ccm_priv ccm; struct nx_xcbc_priv xcbc; struct nx_ctr_priv ctr; } priv; }; struct crypto_aead; /* prototypes */ int nx_crypto_ctx_aes_ccm_init(struct crypto_aead *tfm); int nx_crypto_ctx_aes_gcm_init(struct crypto_aead *tfm); int nx_crypto_ctx_aes_xcbc_init(struct crypto_tfm *tfm); int nx_crypto_ctx_aes_ctr_init(struct crypto_tfm *tfm); int nx_crypto_ctx_aes_cbc_init(struct crypto_tfm *tfm); int nx_crypto_ctx_aes_ecb_init(struct crypto_tfm *tfm); int nx_crypto_ctx_sha_init(struct crypto_tfm *tfm); void nx_crypto_ctx_exit(struct crypto_tfm *tfm); void nx_crypto_ctx_aead_exit(struct crypto_aead *tfm); void nx_ctx_init(struct nx_crypto_ctx *nx_ctx, unsigned int function); int nx_hcall_sync(struct nx_crypto_ctx *ctx, struct vio_pfo_op *op, u32 may_sleep); struct nx_sg *nx_build_sg_list(struct nx_sg *, u8 *, unsigned int *, u32); int nx_build_sg_lists(struct nx_crypto_ctx *, struct blkcipher_desc *, struct scatterlist *, struct scatterlist *, unsigned int *, unsigned int, u8 *); struct nx_sg *nx_walk_and_build(struct nx_sg *, unsigned int, struct scatterlist *, unsigned int, unsigned int *); #ifdef CONFIG_DEBUG_FS #define NX_DEBUGFS_INIT(drv) nx_debugfs_init(drv) #define NX_DEBUGFS_FINI(drv) nx_debugfs_fini(drv) int nx_debugfs_init(struct nx_crypto_driver *); void nx_debugfs_fini(struct nx_crypto_driver *); #else #define NX_DEBUGFS_INIT(drv) (0) #define NX_DEBUGFS_FINI(drv) (0) #endif #define NX_PAGE_NUM(x) ((u64)(x) & 0xfffffffffffff000ULL) extern struct crypto_alg nx_cbc_aes_alg; extern struct crypto_alg nx_ecb_aes_alg; extern struct aead_alg nx_gcm_aes_alg; extern struct aead_alg nx_gcm4106_aes_alg; extern struct crypto_alg nx_ctr3686_aes_alg; extern struct aead_alg nx_ccm_aes_alg; extern struct aead_alg nx_ccm4309_aes_alg; extern struct shash_alg nx_shash_aes_xcbc_alg; extern struct shash_alg nx_shash_sha512_alg; extern struct shash_alg nx_shash_sha256_alg; extern struct nx_crypto_driver nx_driver; #define SCATTERWALK_TO_SG 1 #define SCATTERWALK_FROM_SG 0 #endif