1 files changed, 272 insertions, 0 deletions

diff --git a/include/asm-cris/arch-v32/cryptocop.h b/include/asm-cris/arch-v32/cryptocop.h
new file mode 100644
index 000000000000..dfa1f66fb987
--- /dev/null
+++ b/include/asm-cris/arch-v32/cryptocop.h
@@ -0,0 +1,272 @@
+/*
+ * The device /dev/cryptocop is accessible using this driver using
+ * CRYPTOCOP_MAJOR (254) and minor number 0.
+ */
+
+#ifndef CRYPTOCOP_H
+#define CRYPTOCOP_H
+
+#include <linux/uio.h>
+
+
+#define CRYPTOCOP_SESSION_ID_NONE (0)
+
+typedef unsigned long long int cryptocop_session_id;
+
+/* cryptocop ioctls */
+#define ETRAXCRYPTOCOP_IOCTYPE         (250)
+
+#define CRYPTOCOP_IO_CREATE_SESSION    _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 1, struct strcop_session_op)
+#define CRYPTOCOP_IO_CLOSE_SESSION     _IOW(ETRAXCRYPTOCOP_IOCTYPE, 2, struct strcop_session_op)
+#define CRYPTOCOP_IO_PROCESS_OP        _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 3, struct strcop_crypto_op)
+#define CRYPTOCOP_IO_MAXNR             (3)
+
+typedef enum {
+        cryptocop_cipher_des = 0,
+        cryptocop_cipher_3des = 1,
+        cryptocop_cipher_aes = 2,
+        cryptocop_cipher_m2m = 3, /* mem2mem is essentially a NULL cipher with blocklength=1 */
+        cryptocop_cipher_none
+} cryptocop_cipher_type;
+
+typedef enum {
+        cryptocop_digest_sha1 = 0,
+        cryptocop_digest_md5 = 1,
+        cryptocop_digest_none
+} cryptocop_digest_type;
+
+typedef enum {
+        cryptocop_csum_le = 0,
+        cryptocop_csum_be = 1,
+        cryptocop_csum_none
+} cryptocop_csum_type;
+
+typedef enum {
+        cryptocop_cipher_mode_ecb = 0,
+        cryptocop_cipher_mode_cbc,
+        cryptocop_cipher_mode_none
+} cryptocop_cipher_mode;
+
+typedef enum {
+        cryptocop_3des_eee = 0,
+        cryptocop_3des_eed = 1,
+        cryptocop_3des_ede = 2,
+        cryptocop_3des_edd = 3,
+        cryptocop_3des_dee = 4,
+        cryptocop_3des_ded = 5,
+        cryptocop_3des_dde = 6,
+        cryptocop_3des_ddd = 7
+} cryptocop_3des_mode;
+
+/* Usermode accessible (ioctl) operations. */
+struct strcop_session_op{
+        cryptocop_session_id    ses_id;
+
+        cryptocop_cipher_type   cipher; /* AES, DES, 3DES, m2m, none */
+
+        cryptocop_cipher_mode   cmode; /* ECB, CBC, none */
+        cryptocop_3des_mode     des3_mode;
+
+        cryptocop_digest_type   digest; /* MD5, SHA1, none */
+
+        cryptocop_csum_type     csum;   /* BE, LE, none */
+
+        unsigned char           *key;
+        size_t                  keylen;
+};
+
+#define CRYPTOCOP_CSUM_LENGTH         (2)
+#define CRYPTOCOP_MAX_DIGEST_LENGTH   (20)  /* SHA-1 20, MD5 16 */
+#define CRYPTOCOP_MAX_IV_LENGTH       (16)  /* (3)DES==8, AES == 16 */
+#define CRYPTOCOP_MAX_KEY_LENGTH      (32)
+
+struct strcop_crypto_op{
+        cryptocop_session_id ses_id;
+
+        /* Indata. */
+        unsigned char            *indata;
+        size_t                   inlen; /* Total indata length. */
+
+        /* Cipher configuration. */
+        unsigned char            do_cipher:1;
+        unsigned char            decrypt:1; /* 1 == decrypt, 0 == encrypt */
+        unsigned char            cipher_explicit:1;
+        size_t                   cipher_start;
+        size_t                   cipher_len;
+        /* cipher_iv is used if do_cipher and cipher_explicit and the cipher
+           mode is CBC.  The length is controlled by the type of cipher,
+           e.g. DES/3DES 8 octets and AES 16 octets. */
+        unsigned char            cipher_iv[CRYPTOCOP_MAX_IV_LENGTH];
+        /* Outdata. */
+        unsigned char            *cipher_outdata;
+        size_t                   cipher_outlen;
+
+        /* digest configuration. */
+        unsigned char            do_digest:1;
+        size_t                   digest_start;
+        size_t                   digest_len;
+        /* Outdata.  The actual length is determined by the type of the digest. */
+        unsigned char            digest[CRYPTOCOP_MAX_DIGEST_LENGTH];
+
+        /* Checksum configuration. */
+        unsigned char            do_csum:1;
+        size_t                   csum_start;
+        size_t                   csum_len;
+        /* Outdata. */
+        unsigned char            csum[CRYPTOCOP_CSUM_LENGTH];
+};
+
+
+
+#ifdef __KERNEL__
+
+/********** The API to use from inside the kernel. ************/
+
+#include <asm/arch/hwregs/dma.h>
+
+typedef enum {
+        cryptocop_alg_csum = 0,
+        cryptocop_alg_mem2mem,
+        cryptocop_alg_md5,
+        cryptocop_alg_sha1,
+        cryptocop_alg_des,
+        cryptocop_alg_3des,
+        cryptocop_alg_aes,
+        cryptocop_no_alg,
+} cryptocop_algorithm;
+
+typedef u8 cryptocop_tfrm_id;
+
+
+struct cryptocop_operation;
+
+typedef void (cryptocop_callback)(struct cryptocop_operation*, void*);
+
+struct cryptocop_transform_init {
+        cryptocop_algorithm    alg;
+        /* Keydata for ciphers. */
+        unsigned char          key[CRYPTOCOP_MAX_KEY_LENGTH];
+        unsigned int           keylen;
+        cryptocop_cipher_mode  cipher_mode;
+        cryptocop_3des_mode    tdes_mode;
+        cryptocop_csum_type    csum_mode; /* cryptocop_csum_none is not allowed when alg==cryptocop_alg_csum */
+
+        cryptocop_tfrm_id tid; /* Locally unique in session; assigned by user, checked by driver. */
+        struct cryptocop_transform_init *next;
+};
+
+
+typedef enum {
+        cryptocop_source_dma = 0,
+        cryptocop_source_des,
+        cryptocop_source_3des,
+        cryptocop_source_aes,
+        cryptocop_source_md5,
+        cryptocop_source_sha1,
+        cryptocop_source_csum,
+        cryptocop_source_none,
+} cryptocop_source;
+
+
+struct cryptocop_desc_cfg {
+        cryptocop_tfrm_id tid;
+        cryptocop_source src;
+        unsigned int last:1; /* Last use of this transform in the operation.  Will push outdata when encountered. */
+        struct cryptocop_desc_cfg *next;
+};
+
+struct cryptocop_desc {
+        size_t length;
+        struct cryptocop_desc_cfg *cfg;
+        struct cryptocop_desc *next;
+};
+
+
+/* Flags for cryptocop_tfrm_cfg */
+#define CRYPTOCOP_NO_FLAG     (0x00)
+#define CRYPTOCOP_ENCRYPT     (0x01)
+#define CRYPTOCOP_DECRYPT     (0x02)
+#define CRYPTOCOP_EXPLICIT_IV (0x04)
+
+struct cryptocop_tfrm_cfg {
+        cryptocop_tfrm_id tid;
+
+        unsigned int flags; /* DECRYPT, ENCRYPT, EXPLICIT_IV */
+
+        /* CBC initialisation vector for cihers. */
+        u8 iv[CRYPTOCOP_MAX_IV_LENGTH];
+
+        /* The position in output where to write the transform output.  The order
+           in which the driver writes the output is unspecified, hence if several
+           transforms write on the same positions in the output the result is
+           unspecified. */
+        size_t inject_ix;
+
+        struct cryptocop_tfrm_cfg *next;
+};
+
+
+
+struct cryptocop_dma_list_operation{
+        /* The consumer can provide DMA lists to send to the co-processor.  'use_dmalists' in
+           struct cryptocop_operation must be set for the driver to use them.  outlist,
+           out_data_buf, inlist and in_data_buf must all be physical addresses since they will
+           be loaded to DMA . */
+        dma_descr_data *outlist; /* Out from memory to the co-processor. */
+        char           *out_data_buf;
+        dma_descr_data *inlist; /* In from the co-processor to memory. */
+        char           *in_data_buf;
+
+        cryptocop_3des_mode tdes_mode;
+        cryptocop_csum_type csum_mode;
+};
+
+
+struct cryptocop_tfrm_operation{
+        /* Operation configuration, if not 'use_dmalists' is set. */
+        struct cryptocop_tfrm_cfg *tfrm_cfg;
+        struct cryptocop_desc *desc;
+
+        struct iovec *indata;
+        size_t incount;
+        size_t inlen; /* Total inlength. */
+
+        struct iovec *outdata;
+        size_t outcount;
+        size_t outlen; /* Total outlength. */
+};
+
+
+struct cryptocop_operation {
+        cryptocop_callback *cb;
+        void *cb_data;
+
+        cryptocop_session_id sid;
+
+        /* The status of the operation when returned to consumer. */
+        int operation_status; /* 0, -EAGAIN */
+
+        /* Flags */
+        unsigned int use_dmalists:1;  /* Use outlist and inlist instead of the desc/tfrm_cfg configuration. */
+        unsigned int in_interrupt:1;  /* Set if inserting job from interrupt context. */
+        unsigned int fast_callback:1; /* Set if fast callback wanted, i.e. from interrupt context. */
+
+        union{
+                struct cryptocop_dma_list_operation list_op;
+                struct cryptocop_tfrm_operation tfrm_op;
+        };
+};
+
+
+int cryptocop_new_session(cryptocop_session_id *sid, struct cryptocop_transform_init *tinit, int alloc_flag);
+int cryptocop_free_session(cryptocop_session_id sid);
+
+int cryptocop_job_queue_insert_csum(struct cryptocop_operation *operation);
+
+int cryptocop_job_queue_insert_crypto(struct cryptocop_operation *operation);
+
+int cryptocop_job_queue_insert_user_job(struct cryptocop_operation *operation);
+
+#endif /* __KERNEL__ */
+
+#endif /* CRYPTOCOP_H */