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/*-
* 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 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__ */
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