Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
29 lines
781 B
C
29 lines
781 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* SHA-1 optimized using the CP Assist for Cryptographic Functions (CPACF)
|
|
*
|
|
* Copyright 2025 Google LLC
|
|
*/
|
|
#include <asm/cpacf.h>
|
|
#include <linux/cpufeature.h>
|
|
|
|
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_cpacf_sha1);
|
|
|
|
static void sha1_blocks(struct sha1_block_state *state,
|
|
const u8 *data, size_t nblocks)
|
|
{
|
|
if (static_branch_likely(&have_cpacf_sha1))
|
|
cpacf_kimd(CPACF_KIMD_SHA_1, state, data,
|
|
nblocks * SHA1_BLOCK_SIZE);
|
|
else
|
|
sha1_blocks_generic(state, data, nblocks);
|
|
}
|
|
|
|
#define sha1_mod_init_arch sha1_mod_init_arch
|
|
static void sha1_mod_init_arch(void)
|
|
{
|
|
if (cpu_have_feature(S390_CPU_FEATURE_MSA) &&
|
|
cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_1))
|
|
static_branch_enable(&have_cpacf_sha1);
|
|
}
|