freebsd-dev/sys/contrib/octeon-sdk/cvmx-crypto.c

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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* 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 Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Helper utilities for enabling crypto.
*
* <hr>$Revision: $<hr>
*/
#include "executive-config.h"
#include "cvmx-config.h"
#include "cvmx.h"
int cvmx_crypto_dormant_enable(uint64_t key)
{
if (octeon_has_feature(OCTEON_FEATURE_CRYPTO))
return 1;
if (octeon_has_feature(OCTEON_FEATURE_DORM_CRYPTO)) {
cvmx_rnm_eer_key_t v;
v.s.key = key;
cvmx_write_csr(CVMX_RNM_EER_KEY, v.u64);
}
return octeon_has_feature(OCTEON_FEATURE_CRYPTO);
}
uint64_t cvmx_crypto_dormant_dbg(void)
{
cvmx_rnm_eer_dbg_t dbg;
if (!octeon_has_feature(OCTEON_FEATURE_DORM_CRYPTO))
return 0;
dbg.u64 = cvmx_read_csr(CVMX_RNM_EER_DBG);
return dbg.s.dat;
}