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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2022 Tino Reichardt <milky-zfs@mcmilk.de>
*/
#include <sys/simd.h>
#include <sys/zfs_context.h>
#include <sys/zfs_impl.h>
#include <sys/sha2.h>
#include <sha2/sha2_impl.h>
#include <sys/asm_linkage.h>
#define TF(E, N) \
extern void ASMABI E(uint64_t s[8], const void *, size_t); \
static inline void N(uint64_t s[8], const void *d, size_t b) { \
kfpu_begin(); E(s, d, b); kfpu_end(); \
}
/* some implementation is always okay */
static inline boolean_t sha2_is_supported(void)
{
return (B_TRUE);
}
#if defined(__x86_64)
/* Users of ASMABI requires all calls to be from wrappers */
extern void ASMABI
zfs_sha512_transform_x64(uint64_t s[8], const void *, size_t);
static inline void
tf_sha512_transform_x64(uint64_t s[8], const void *d, size_t b)
{
zfs_sha512_transform_x64(s, d, b);
}
const sha512_ops_t sha512_x64_impl = {
.is_supported = sha2_is_supported,
.transform = tf_sha512_transform_x64,
.name = "x64"
};
#if defined(HAVE_AVX)
static boolean_t sha2_have_avx(void)
{
return (kfpu_allowed() && zfs_avx_available());
}
TF(zfs_sha512_transform_avx, tf_sha512_avx);
const sha512_ops_t sha512_avx_impl = {
.is_supported = sha2_have_avx,
.transform = tf_sha512_avx,
.name = "avx"
};
#endif
#if defined(HAVE_AVX2)
static boolean_t sha2_have_avx2(void)
{
return (kfpu_allowed() && zfs_avx2_available());
}
TF(zfs_sha512_transform_avx2, tf_sha512_avx2);
const sha512_ops_t sha512_avx2_impl = {
.is_supported = sha2_have_avx2,
.transform = tf_sha512_avx2,
.name = "avx2"
};
#endif
#elif defined(__aarch64__) || defined(__arm__)
extern void zfs_sha512_block_armv7(uint64_t s[8], const void *, size_t);
const sha512_ops_t sha512_armv7_impl = {
.is_supported = sha2_is_supported,
.transform = zfs_sha512_block_armv7,
.name = "armv7"
};
#if defined(__aarch64__)
static boolean_t sha512_have_armv8ce(void)
{
return (kfpu_allowed() && zfs_sha512_available());
}
TF(zfs_sha512_block_armv8, tf_sha512_armv8ce);
const sha512_ops_t sha512_armv8_impl = {
.is_supported = sha512_have_armv8ce,
.transform = tf_sha512_armv8ce,
.name = "armv8-ce"
};
#endif
#if defined(__arm__) && __ARM_ARCH > 6
static boolean_t sha512_have_neon(void)
{
return (kfpu_allowed() && zfs_neon_available());
}
TF(zfs_sha512_block_neon, tf_sha512_neon);
const sha512_ops_t sha512_neon_impl = {
.is_supported = sha512_have_neon,
.transform = tf_sha512_neon,
.name = "neon"
};
#endif
#elif defined(__PPC64__)
TF(zfs_sha512_ppc, tf_sha512_ppc);
const sha512_ops_t sha512_ppc_impl = {
.is_supported = sha2_is_supported,
.transform = tf_sha512_ppc,
.name = "ppc"
};
static boolean_t sha512_have_isa207(void)
{
return (kfpu_allowed() && zfs_isa207_available());
}
TF(zfs_sha512_power8, tf_sha512_power8);
const sha512_ops_t sha512_power8_impl = {
.is_supported = sha512_have_isa207,
.transform = tf_sha512_power8,
.name = "power8"
};
#endif /* __PPC64__ */
/* the two generic ones */
extern const sha512_ops_t sha512_generic_impl;
/* array with all sha512 implementations */
static const sha512_ops_t *const sha512_impls[] = {
&sha512_generic_impl,
#if defined(__x86_64)
&sha512_x64_impl,
#endif
#if defined(__x86_64) && defined(HAVE_AVX)
&sha512_avx_impl,
#endif
#if defined(__x86_64) && defined(HAVE_AVX2)
&sha512_avx2_impl,
#endif
#if defined(__aarch64__) || defined(__arm__)
&sha512_armv7_impl,
#if defined(__aarch64__)
&sha512_armv8_impl,
#endif
#if defined(__arm__) && __ARM_ARCH > 6
&sha512_neon_impl,
#endif
#endif
#if defined(__PPC64__)
&sha512_ppc_impl,
&sha512_power8_impl,
#endif /* __PPC64__ */
};
/* use the generic implementation functions */
#define IMPL_NAME "sha512"
#define IMPL_OPS_T sha512_ops_t
#define IMPL_ARRAY sha512_impls
#define IMPL_GET_OPS sha512_get_ops
#define ZFS_IMPL_OPS zfs_sha512_ops
#include <generic_impl.c>
#ifdef _KERNEL
#define IMPL_FMT(impl, i) (((impl) == (i)) ? "[%s] " : "%s ")
#if defined(__linux__)
static int
sha512_param_get(char *buffer, zfs_kernel_param_t *unused)
{
const uint32_t impl = IMPL_READ(generic_impl_chosen);
char *fmt;
int cnt = 0;
/* cycling */
fmt = IMPL_FMT(impl, IMPL_CYCLE);
cnt += sprintf(buffer + cnt, fmt, "cycle");
/* list fastest */
fmt = IMPL_FMT(impl, IMPL_FASTEST);
cnt += sprintf(buffer + cnt, fmt, "fastest");
/* list all supported implementations */
generic_impl_init();
for (uint32_t i = 0; i < generic_supp_impls_cnt; ++i) {
fmt = IMPL_FMT(impl, i);
cnt += sprintf(buffer + cnt, fmt,
generic_supp_impls[i]->name);
}
return (cnt);
}
static int
sha512_param_set(const char *val, zfs_kernel_param_t *unused)
{
(void) unused;
return (generic_impl_setname(val));
}
#elif defined(__FreeBSD__)
#include <sys/sbuf.h>
static int
sha512_param(ZFS_MODULE_PARAM_ARGS)
{
int err;
generic_impl_init();
if (req->newptr == NULL) {
const uint32_t impl = IMPL_READ(generic_impl_chosen);
const int init_buflen = 64;
const char *fmt;
struct sbuf *s;
s = sbuf_new_for_sysctl(NULL, NULL, init_buflen, req);
/* cycling */
fmt = IMPL_FMT(impl, IMPL_CYCLE);
(void) sbuf_printf(s, fmt, "cycle");
/* list fastest */
fmt = IMPL_FMT(impl, IMPL_FASTEST);
(void) sbuf_printf(s, fmt, "fastest");
/* list all supported implementations */
for (uint32_t i = 0; i < generic_supp_impls_cnt; ++i) {
fmt = IMPL_FMT(impl, i);
(void) sbuf_printf(s, fmt, generic_supp_impls[i]->name);
}
err = sbuf_finish(s);
sbuf_delete(s);
return (err);
}
/* we got module parameter */
char buf[16];
err = sysctl_handle_string(oidp, buf, sizeof (buf), req);
if (err) {
return (err);
}
return (-generic_impl_setname(buf));
}
#endif
#undef IMPL_FMT
ZFS_MODULE_VIRTUAL_PARAM_CALL(zfs, zfs_, sha512_impl,
sha512_param_set, sha512_param_get, ZMOD_RW, \
"Select SHA512 implementation.");
#endif
#undef TF
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