5 #define NX_NAME "nx-crypto"
6 #define NX_STRING "IBM Power7+ Nest Accelerator Crypto Driver"
7 #define NX_VERSION "1.0"
9 static const char nx_driver_string[] = NX_STRING;
10 static const char nx_driver_version[] = NX_VERSION;
12 /* a scatterlist in the format PHYP is expecting */
17 } __attribute((packed));
19 #define NX_PAGE_SIZE (4096)
20 #define NX_MAX_SG_ENTRIES (NX_PAGE_SIZE/(sizeof(struct nx_sg)))
28 /* msc_triplet and max_sync_cop are used only to assist in parsing the
29 * openFirmware property */
40 struct msc_triplet trip[0];
48 #define NX_OF_FLAG_MAXSGLEN_SET (1)
49 #define NX_OF_FLAG_STATUS_SET (2)
50 #define NX_OF_FLAG_MAXSYNCCOP_SET (4)
51 #define NX_OF_FLAG_MASK_READY (NX_OF_FLAG_MAXSGLEN_SET | \
52 NX_OF_FLAG_STATUS_SET | \
53 NX_OF_FLAG_MAXSYNCCOP_SET)
57 enum nx_status status;
58 struct alg_props ap[NX_MAX_FC][NX_MAX_MODE][3];
65 atomic64_t sha256_bytes;
67 atomic64_t sha512_bytes;
73 atomic_t last_error_pid;
77 struct dentry *dfs_root;
78 struct dentry *dfs_aes_ops, *dfs_aes_bytes;
79 struct dentry *dfs_sha256_ops, *dfs_sha256_bytes;
80 struct dentry *dfs_sha512_ops, *dfs_sha512_bytes;
81 struct dentry *dfs_errors, *dfs_last_error, *dfs_last_error_pid;
84 struct nx_crypto_driver {
85 struct nx_stats stats;
87 struct vio_dev *viodev;
88 struct vio_driver viodriver;
89 struct nx_debugfs dfs;
92 #define NX_GCM4106_NONCE_LEN (4)
93 #define NX_GCM_CTR_OFFSET (12)
97 u8 nonce[NX_GCM4106_NONCE_LEN];
100 #define NX_CCM_AES_KEY_LEN (16)
101 #define NX_CCM4309_AES_KEY_LEN (19)
102 #define NX_CCM4309_NONCE_LEN (3)
108 u8 nonce[NX_CCM4309_NONCE_LEN];
111 struct nx_xcbc_priv {
119 struct nx_crypto_ctx {
120 spinlock_t lock; /* synchronize access to the context */
121 void *kmem; /* unaligned, kmalloc'd buffer */
122 size_t kmem_len; /* length of kmem */
123 struct nx_csbcpb *csbcpb; /* aligned page given to phyp @ hcall time */
124 struct vio_pfo_op op; /* operation struct with hcall parameters */
125 struct nx_csbcpb *csbcpb_aead; /* secondary csbcpb used by AEAD algs */
126 struct vio_pfo_op op_aead;/* operation struct for csbcpb_aead */
128 struct nx_sg *in_sg; /* aligned pointer into kmem to an sg list */
129 struct nx_sg *out_sg; /* aligned pointer into kmem to an sg list */
131 struct alg_props *ap; /* pointer into props based on our key size */
132 struct alg_props props[3];/* openFirmware properties for requests */
133 struct nx_stats *stats; /* pointer into an nx_crypto_driver for stats
137 struct nx_gcm_priv gcm;
138 struct nx_ccm_priv ccm;
139 struct nx_xcbc_priv xcbc;
140 struct nx_ctr_priv ctr;
145 int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm);
146 int nx_crypto_ctx_aes_gcm_init(struct crypto_aead *tfm);
147 int nx_crypto_ctx_aes_xcbc_init(struct crypto_tfm *tfm);
148 int nx_crypto_ctx_aes_ctr_init(struct crypto_tfm *tfm);
149 int nx_crypto_ctx_aes_cbc_init(struct crypto_tfm *tfm);
150 int nx_crypto_ctx_aes_ecb_init(struct crypto_tfm *tfm);
151 int nx_crypto_ctx_sha_init(struct crypto_tfm *tfm);
152 void nx_crypto_ctx_exit(struct crypto_tfm *tfm);
153 void nx_crypto_ctx_aead_exit(struct crypto_aead *tfm);
154 void nx_ctx_init(struct nx_crypto_ctx *nx_ctx, unsigned int function);
155 int nx_hcall_sync(struct nx_crypto_ctx *ctx, struct vio_pfo_op *op,
157 struct nx_sg *nx_build_sg_list(struct nx_sg *, u8 *, unsigned int *, u32);
158 int nx_build_sg_lists(struct nx_crypto_ctx *, struct blkcipher_desc *,
159 struct scatterlist *, struct scatterlist *, unsigned int *,
161 struct nx_sg *nx_walk_and_build(struct nx_sg *, unsigned int,
162 struct scatterlist *, unsigned int,
165 #ifdef CONFIG_DEBUG_FS
166 #define NX_DEBUGFS_INIT(drv) nx_debugfs_init(drv)
167 #define NX_DEBUGFS_FINI(drv) nx_debugfs_fini(drv)
169 int nx_debugfs_init(struct nx_crypto_driver *);
170 void nx_debugfs_fini(struct nx_crypto_driver *);
172 #define NX_DEBUGFS_INIT(drv) (0)
173 #define NX_DEBUGFS_FINI(drv) (0)
176 #define NX_PAGE_NUM(x) ((u64)(x) & 0xfffffffffffff000ULL)
178 extern struct crypto_alg nx_cbc_aes_alg;
179 extern struct crypto_alg nx_ecb_aes_alg;
180 extern struct aead_alg nx_gcm_aes_alg;
181 extern struct aead_alg nx_gcm4106_aes_alg;
182 extern struct crypto_alg nx_ctr_aes_alg;
183 extern struct crypto_alg nx_ctr3686_aes_alg;
184 extern struct crypto_alg nx_ccm_aes_alg;
185 extern struct crypto_alg nx_ccm4309_aes_alg;
186 extern struct shash_alg nx_shash_aes_xcbc_alg;
187 extern struct shash_alg nx_shash_sha512_alg;
188 extern struct shash_alg nx_shash_sha256_alg;
190 extern struct nx_crypto_driver nx_driver;
192 #define SCATTERWALK_TO_SG 1
193 #define SCATTERWALK_FROM_SG 0