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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2018 NXP
*
*/
#ifndef _SECUREKEY_DESC_H_
#define _SECUREKEY_DESC_H_
#include "../../drivers/crypto/caam/compat.h"
#include "../../drivers/crypto/caam/regs.h"
#include "../../drivers/crypto/caam/intern.h"
#include "../../drivers/crypto/caam/desc.h"
#include "../../drivers/crypto/caam/desc_constr.h"
#include "../../drivers/crypto/caam/jr.h"
#include "../../drivers/crypto/caam/error.h"
#include "../../drivers/crypto/caam/pdb.h"
#define SK_BLOB_KEY_SZ 32 /* Blob key size. */
#define SK_BLOB_MAC_SZ 16 /* Blob MAC size. */
/*
* brief defines different kinds of operations supported by this module.
*/
enum sk_req_type {
sk_get_random,
sk_red_blob_enc,
sk_red_blob_dec,
};
/*
* struct random_des
* param[out] rnd_data output buffer for random data.
*/
struct random_desc {
dma_addr_t rnd_data;
};
/* struct redblob_encap_desc
* details Structure containing dma address for redblob encapsulation.
* param[in] in_data input data to redblob encap descriptor.
* param[out] redblob output buffer for redblob.
*/
struct redblob_encap_desc {
dma_addr_t in_data;
dma_addr_t redblob;
};
/* struct redblob_decap_desc
* details Structure containing dma address for redblob decapsulation.
* param[in] redblob input buffer to redblob decap descriptor.
* param[out] out_data output data from redblob decap descriptor.
*/
struct redblob_decap_desc {
dma_addr_t redblob;
dma_addr_t out_data;
};
/* struct sk_desc
* details Structure for securekey descriptor creation.
* param[in] req_type operation supported.
* param[in] dma_u union of struct for supported operation.
*/
struct sk_desc {
u32 req_type;
union {
struct redblob_encap_desc redblob_encapdesc;
struct redblob_decap_desc redblob_decapdesc;
struct random_desc random_descp;
} dma_u;
};
/* struct sk_fetch_rnd_data
* decriptor structure containing key length.
*/
struct sk_fetch_rnd_data {
void *data;
size_t key_len;
};
/* struct sk_red_blob_encap
* details Structure containing buffer pointers for redblob encapsulation.
* param[in] data Input data.
* param[in] data_sz size of Input data.
* param[out] redblob output buffer for redblob.
* param[in] redblob_sz size of redblob.
*/
struct sk_red_blob_encap {
void *data;
uint32_t data_sz;
void *redblob;
uint32_t redblob_sz;
};
/* struct sk_red_blob_decap
* details Structure containing buffer pointers for redblob decapsulation.
* param[in] redblob Input redblob.
* param[in] redblob_sz size of redblob.
* param[out] data output buffer for data.
* param[in] data_sz size of output data.
*/
struct sk_red_blob_decap {
void *redblob;
uint32_t redblob_sz;
void *data;
uint32_t data_sz;
};
/* struct sk_req
* details Structure for securekey request creation.
* param[in] type operation supported.
* param[in] req_u union of struct for supported operation.
* param[out] ret return status of CAAM operation.
* param[in] mem_pointer memory pointer for allocated kernel memory.
* param[in] desc_pointer Pointer to securekey descriptor creation structure.
* param[in] comp struct completion object.
* param[in] hwdesc contains descriptor instructions.
*/
struct sk_req {
enum sk_req_type type;
void *arg;
union {
struct sk_red_blob_encap sk_red_blob_encap;
struct sk_red_blob_decap sk_red_blob_decap;
struct sk_fetch_rnd_data sk_fetch_rnd_data;
} req_u;
int ret;
void *mem_pointer;
void *desc_pointer;
struct completion comp;
u32 hwdesc[MAX_CAAM_DESCSIZE];
};
int caam_get_random(struct secure_key_payload *p, enum sk_req_type fetch_rnd,
struct device *dev);
int key_blob(struct secure_key_payload *p, enum sk_req_type encap_type,
struct device *dev);
int key_deblob(struct secure_key_payload *p, enum sk_req_type decap_type,
struct device *dev);
#endif /*_SECUREKEY_DESC_H_*/
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