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