194 lines
5.1 KiB
C
194 lines
5.1 KiB
C
|
|
#ifndef __NX_H__
|
|
#define __NX_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_priv {
|
|
u8 iv[16];
|
|
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_priv {
|
|
u8 iv[16];
|
|
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 iv[16];
|
|
};
|
|
|
|
struct nx_crypto_ctx {
|
|
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;
|
|
};
|
|
|
|
/* prototypes */
|
|
int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm);
|
|
int nx_crypto_ctx_aes_gcm_init(struct crypto_tfm *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_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,
|
|
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 crypto_alg nx_gcm_aes_alg;
|
|
extern struct crypto_alg nx_gcm4106_aes_alg;
|
|
extern struct crypto_alg nx_ctr_aes_alg;
|
|
extern struct crypto_alg nx_ctr3686_aes_alg;
|
|
extern struct crypto_alg nx_ccm_aes_alg;
|
|
extern struct crypto_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
|