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Diffstat (limited to 'drivers/crypto/dpaa2_sec/hw/desc/common.h')
| -rw-r--r-- | drivers/crypto/dpaa2_sec/hw/desc/common.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/crypto/dpaa2_sec/hw/desc/common.h b/drivers/crypto/dpaa2_sec/hw/desc/common.h new file mode 100644 index 00000000..6b254908 --- /dev/null +++ b/drivers/crypto/dpaa2_sec/hw/desc/common.h @@ -0,0 +1,131 @@ +/*- + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * BSD LICENSE + * + * Copyright 2008-2016 Freescale Semiconductor Inc. + * Copyright (c) 2016 NXP. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the above-listed copyright holders nor the + * names of any contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * GPL LICENSE SUMMARY + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __DESC_COMMON_H__ +#define __DESC_COMMON_H__ + +#include "hw/rta.h" + +/** + * DOC: Shared Descriptor Constructors - shared structures + * + * Data structures shared between algorithm, protocol implementations. + */ + +/** + * struct alginfo - Container for algorithm details + * @algtype: algorithm selector; for valid values, see documentation of the + * functions where it is used. + * @keylen: length of the provided algorithm key, in bytes + * @key: address where algorithm key resides; virtual address if key_type is + * RTA_DATA_IMM, physical (bus) address if key_type is RTA_DATA_PTR or + * RTA_DATA_IMM_DMA. + * @key_enc_flags: key encryption flags; see encrypt_flags parameter of KEY + * command for valid values. + * @key_type: enum rta_data_type + * @algmode: algorithm mode selector; for valid values, see documentation of the + * functions where it is used. + */ +struct alginfo { + uint32_t algtype; + uint32_t keylen; + uint64_t key; + uint32_t key_enc_flags; + enum rta_data_type key_type; + uint16_t algmode; +}; + +#define INLINE_KEY(alginfo) inline_flags(alginfo->key_type) + +/** + * rta_inline_query() - Provide indications on which data items can be inlined + * and which shall be referenced in a shared descriptor. + * @sd_base_len: Shared descriptor base length - bytes consumed by the commands, + * excluding the data items to be inlined (or corresponding + * pointer if an item is not inlined). Each cnstr_* function that + * generates descriptors should have a define mentioning + * corresponding length. + * @jd_len: Maximum length of the job descriptor(s) that will be used + * together with the shared descriptor. + * @data_len: Array of lengths of the data items trying to be inlined + * @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0 + * otherwise. + * @count: Number of data items (size of @data_len array); must be <= 32 + * + * Return: 0 if data can be inlined / referenced, negative value if not. If 0, + * check @inl_mask for details. + */ +static inline int +rta_inline_query(unsigned int sd_base_len, + unsigned int jd_len, + unsigned int *data_len, + uint32_t *inl_mask, + unsigned int count) +{ + int rem_bytes = (int)(CAAM_DESC_BYTES_MAX - sd_base_len - jd_len); + unsigned int i; + + *inl_mask = 0; + for (i = 0; (i < count) && (rem_bytes > 0); i++) { + if (rem_bytes - (int)(data_len[i] + + (count - i - 1) * CAAM_PTR_SZ) >= 0) { + rem_bytes -= data_len[i]; + *inl_mask |= (1 << i); + } else { + rem_bytes -= CAAM_PTR_SZ; + } + } + + return (rem_bytes >= 0) ? 0 : -1; +} + +/** + * struct protcmd - Container for Protocol Operation Command fields + * @optype: command type + * @protid: protocol Identifier + * @protinfo: protocol Information + */ +struct protcmd { + uint32_t optype; + uint32_t protid; + uint16_t protinfo; +}; + +#endif /* __DESC_COMMON_H__ */ |