Add VIA/ACE "PadLock" support as a crypto(9) driver.
HW donated by: Mike Tancsa <mike@sentex.net> Most of the code obtained from: OpenBSD MFC after: 3 days
This commit is contained in:
Pawel Jakub Dawidek
parent
a9d726bd18
commit
ef0a6e203b
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=149211
@ -135,6 +135,7 @@ bf_enc.o optional crypto \
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crypto/des/arch/i386/des_enc.S optional crypto
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crypto/des/des_ecb.c optional crypto
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crypto/des/des_setkey.c optional crypto
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crypto/via/padlock.c optional padlock
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dev/advansys/adv_isa.c optional adv isa
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dev/aic/aic_isa.c optional aic isa
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dev/arcmsr/arcmsr.c optional arcmsr pci
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504
sys/crypto/via/padlock.c
Normal file
504
sys/crypto/via/padlock.c
Normal file
@ -0,0 +1,504 @@
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/*-
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* Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* Copyright (c) 2004 Mark R V Murray
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $OpenBSD: via.c,v 1.3 2004/06/15 23:36:55 deraadt Exp $ */
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/*-
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* Copyright (c) 2003 Jason Wright
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* Copyright (c) 2003, 2004 Theo de Raadt
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/malloc.h>
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#include <sys/libkern.h>
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#include <sys/mbuf.h>
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#include <sys/uio.h>
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#if defined(__i386__) && !defined(PC98)
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#include <machine/cpufunc.h>
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#include <machine/cputypes.h>
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#endif
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#include <opencrypto/cryptodev.h>
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#include <crypto/rijndael/rijndael.h>
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#define PADLOCK_ROUND_COUNT_AES128 10
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#define PADLOCK_ROUND_COUNT_AES192 12
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#define PADLOCK_ROUND_COUNT_AES256 14
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#define PADLOCK_ALGORITHM_TYPE_AES 0
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#define PADLOCK_KEY_GENERATION_HW 0
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#define PADLOCK_KEY_GENERATION_SW 1
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#define PADLOCK_DIRECTION_ENCRYPT 0
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#define PADLOCK_DIRECTION_DECRYPT 1
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#define PADLOCK_KEY_SIZE_128 0
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#define PADLOCK_KEY_SIZE_192 1
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#define PADLOCK_KEY_SIZE_256 2
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union padlock_cw {
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uint64_t raw;
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struct {
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u_int round_count : 4;
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u_int algorithm_type : 3;
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u_int key_generation : 1;
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u_int intermediate : 1;
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u_int direction : 1;
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u_int key_size : 2;
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u_int filler0 : 20;
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u_int filler1 : 32;
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u_int filler2 : 32;
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u_int filler3 : 32;
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} __field;
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};
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#define cw_round_count __field.round_count
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#define cw_algorithm_type __field.algorithm_type
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#define cw_key_generation __field.key_generation
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#define cw_intermediate __field.intermediate
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#define cw_direction __field.direction
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#define cw_key_size __field.key_size
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#define cw_filler0 __field.filler0
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#define cw_filler1 __field.filler1
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#define cw_filler2 __field.filler2
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#define cw_filler3 __field.filler3
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struct padlock_session {
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union padlock_cw ses_cw __aligned(16);
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uint32_t ses_ekey[4 * (RIJNDAEL_MAXNR + 1) + 4] __aligned(16); /* 128 bit aligned */
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uint32_t ses_dkey[4 * (RIJNDAEL_MAXNR + 1) + 4] __aligned(16); /* 128 bit aligned */
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uint8_t ses_iv[16] __aligned(16); /* 128 bit aligned */
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int ses_used;
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uint32_t ses_id;
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TAILQ_ENTRY(padlock_session) ses_next;
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};
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struct padlock_softc {
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int32_t sc_cid;
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uint32_t sc_sid;
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TAILQ_HEAD(, padlock_session) sc_sessions;
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struct mtx sc_sessions_mtx;
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};
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static struct padlock_softc *padlock_sc;
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static int padlock_newsession(void *arg __unused, uint32_t *sidp,
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struct cryptoini *cri);
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static int padlock_freesession(void *arg __unused, uint64_t tid);
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static int padlock_process(void *arg __unused, struct cryptop *crp,
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int hint __unused);
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static __inline void
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padlock_cbc(void *in, void *out, size_t count, void *key, union padlock_cw *cw,
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void *iv)
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{
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#ifdef __GNUCLIKE_ASM
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/* The .byte line is really VIA C3 "xcrypt-cbc" instruction */
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__asm __volatile(
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"pushf \n\t"
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"popf \n\t"
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"rep \n\t"
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".byte 0x0f, 0xa7, 0xd0"
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: "+a" (iv), "+c" (count), "+D" (out), "+S" (in)
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: "b" (key), "d" (cw)
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: "cc", "memory"
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);
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#endif
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}
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static int
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padlock_init(void)
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{
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struct padlock_softc *sc;
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#if defined(__i386__) && !defined(PC98)
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u_int regs[4];
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int has_ace = 0;
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if (cpu_class < CPUCLASS_586)
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return (EINVAL);
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do_cpuid(1, regs);
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if ((regs[0] & 0xf) >= 3) {
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do_cpuid(0xc0000000, regs);
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if (regs[0] == 0xc0000001) {
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do_cpuid(0xc0000001, regs);
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if ((regs[3] & 0xc0) == 0xc0)
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has_ace = 1;
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}
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}
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if (!has_ace) {
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printf("PADLOCK: No ACE support.\n");
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return (EINVAL);
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}
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#else
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return (EINVAL);
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#endif
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padlock_sc = sc = malloc(sizeof(*padlock_sc), M_DEVBUF,
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M_NOWAIT | M_ZERO);
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if (padlock_sc == NULL) {
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printf("PADLOCK: Could not allocate memory.\n");
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return (ENOMEM);
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}
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TAILQ_INIT(&sc->sc_sessions);
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sc->sc_sid = 1;
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sc->sc_cid = crypto_get_driverid(0);
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if (sc->sc_cid < 0) {
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printf("PADLOCK: Could not get crypto driver id.\n");
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free(padlock_sc, M_DEVBUF);
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padlock_sc = NULL;
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return (ENOMEM);
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}
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mtx_init(&sc->sc_sessions_mtx, "padlock_mtx", NULL, MTX_DEF);
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crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0, padlock_newsession,
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padlock_freesession, padlock_process, NULL);
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return (0);
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}
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static int
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padlock_destroy(void)
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{
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struct padlock_softc *sc = padlock_sc;
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struct padlock_session *ses;
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u_int active = 0;
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if (sc == NULL)
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return (0);
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mtx_lock(&sc->sc_sessions_mtx);
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TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) {
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if (ses->ses_used)
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active++;
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}
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if (active > 0) {
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mtx_unlock(&sc->sc_sessions_mtx);
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printf("PADLOCK: Cannot destroy, %u sessions active.\n",
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active);
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return (EBUSY);
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}
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padlock_sc = NULL;
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for (ses = TAILQ_FIRST(&sc->sc_sessions); ses != NULL;
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ses = TAILQ_FIRST(&sc->sc_sessions)) {
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TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
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free(ses, M_DEVBUF);
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}
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mtx_destroy(&sc->sc_sessions_mtx);
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crypto_unregister_all(sc->sc_cid);
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free(sc, M_DEVBUF);
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return (0);
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}
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static int
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padlock_newsession(void *arg __unused, uint32_t *sidp, struct cryptoini *cri)
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{
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struct padlock_softc *sc = padlock_sc;
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struct padlock_session *ses = NULL;
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union padlock_cw *cw;
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int i;
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if (sc == NULL || sidp == NULL || cri == NULL ||
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cri->cri_next != NULL || cri->cri_alg != CRYPTO_AES_CBC) {
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return (EINVAL);
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}
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if (cri->cri_klen != 128 && cri->cri_klen != 192 &&
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cri->cri_klen != 256) {
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return (EINVAL);
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}
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/*
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* Let's look for a free session structure.
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*/
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mtx_lock(&sc->sc_sessions_mtx);
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/*
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* Free sessions goes first, so if first session is used, we need to
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* allocate one.
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*/
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ses = TAILQ_FIRST(&sc->sc_sessions);
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if (ses == NULL || ses->ses_used)
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ses = NULL;
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else {
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TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
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ses->ses_used = 1;
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TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
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}
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mtx_unlock(&sc->sc_sessions_mtx);
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if (ses == NULL) {
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ses = malloc(sizeof(*ses), M_DEVBUF, M_NOWAIT | M_ZERO);
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if (ses == NULL)
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return (ENOMEM);
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ses->ses_used = 1;
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mtx_lock(&sc->sc_sessions_mtx);
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ses->ses_id = sc->sc_sid++;
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TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
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mtx_unlock(&sc->sc_sessions_mtx);
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}
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cw = &ses->ses_cw;
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bzero(cw, sizeof(*cw));
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cw->cw_algorithm_type = PADLOCK_ALGORITHM_TYPE_AES;
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cw->cw_key_generation = PADLOCK_KEY_GENERATION_SW;
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cw->cw_intermediate = 0;
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switch (cri->cri_klen) {
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case 128:
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cw->cw_round_count = PADLOCK_ROUND_COUNT_AES128;
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cw->cw_key_size = PADLOCK_KEY_SIZE_128;
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#ifdef HW_KEY_GENERATION
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/* This doesn't buy us much, that's why it is commented out. */
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cw->cw_key_generation = PADLOCK_KEY_GENERATION_HW;
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#endif
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break;
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case 192:
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cw->cw_round_count = PADLOCK_ROUND_COUNT_AES192;
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cw->cw_key_size = PADLOCK_KEY_SIZE_192;
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break;
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case 256:
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cw->cw_round_count = PADLOCK_ROUND_COUNT_AES256;
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cw->cw_key_size = PADLOCK_KEY_SIZE_256;
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break;
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}
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arc4rand(ses->ses_iv, sizeof(ses->ses_iv), 0);
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if (cw->cw_key_generation == PADLOCK_KEY_GENERATION_SW) {
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/* Build expanded keys for both directions */
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rijndaelKeySetupEnc(ses->ses_ekey, cri->cri_key, cri->cri_klen);
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rijndaelKeySetupDec(ses->ses_dkey, cri->cri_key, cri->cri_klen);
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for (i = 0; i < 4 * (RIJNDAEL_MAXNR + 1); i++) {
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ses->ses_ekey[i] = ntohl(ses->ses_ekey[i]);
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ses->ses_dkey[i] = ntohl(ses->ses_dkey[i]);
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}
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} else {
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bcopy(cri->cri_key, ses->ses_ekey, cri->cri_klen);
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bcopy(cri->cri_key, ses->ses_dkey, cri->cri_klen);
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}
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*sidp = ses->ses_id;
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return (0);
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}
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static int
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padlock_freesession(void *arg __unused, uint64_t tid)
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{
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struct padlock_softc *sc = padlock_sc;
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struct padlock_session *ses;
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uint32_t sid = ((uint32_t)tid) & 0xffffffff;
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if (sc == NULL)
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return (EINVAL);
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mtx_lock(&sc->sc_sessions_mtx);
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TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) {
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if (ses->ses_id == sid)
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break;
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}
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if (ses == NULL) {
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mtx_unlock(&sc->sc_sessions_mtx);
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return (EINVAL);
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}
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TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
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bzero(ses, sizeof(ses));
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ses->ses_used = 0;
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TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
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mtx_unlock(&sc->sc_sessions_mtx);
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return (0);
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}
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static int
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padlock_process(void *arg __unused, struct cryptop *crp, int hint __unused)
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{
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struct padlock_softc *sc = padlock_sc;
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struct padlock_session *ses;
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union padlock_cw *cw;
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struct cryptodesc *crd = NULL;
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uint32_t *key;
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u_char *buf, *abuf;
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int err = 0;
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buf = NULL;
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if (crp == NULL || crp->crp_callback == NULL) {
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err = EINVAL;
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goto out;
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}
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crd = crp->crp_desc;
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if (crd == NULL || crd->crd_next != NULL ||
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crd->crd_alg != CRYPTO_AES_CBC ||
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(crd->crd_len % 16) != 0) {
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err = EINVAL;
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goto out;
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}
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mtx_lock(&sc->sc_sessions_mtx);
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TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) {
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if (ses->ses_id == (crp->crp_sid & 0xffffffff))
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break;
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}
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mtx_unlock(&sc->sc_sessions_mtx);
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if (ses == NULL) {
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err = EINVAL;
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goto out;
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}
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buf = malloc(crd->crd_len + 16, M_DEVBUF, M_NOWAIT);
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if (buf == NULL) {
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err = ENOMEM;
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goto out;
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}
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abuf = buf + 16 - ((uintptr_t)buf % 16);
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cw = &ses->ses_cw;
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cw->cw_filler0 = 0;
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cw->cw_filler1 = 0;
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cw->cw_filler2 = 0;
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cw->cw_filler3 = 0;
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if ((crd->crd_flags & CRD_F_ENCRYPT) != 0) {
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cw->cw_direction = PADLOCK_DIRECTION_ENCRYPT;
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key = ses->ses_ekey;
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if ((crd->crd_flags & CRD_F_IV_EXPLICIT) != 0)
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bcopy(crd->crd_iv, ses->ses_iv, 16);
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if ((crd->crd_flags & CRD_F_IV_PRESENT) == 0) {
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if ((crp->crp_flags & CRYPTO_F_IMBUF) != 0) {
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m_copyback((struct mbuf *)crp->crp_buf,
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crd->crd_inject, 16, ses->ses_iv);
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} else if ((crp->crp_flags & CRYPTO_F_IOV) != 0) {
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cuio_copyback((struct uio *)crp->crp_buf,
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crd->crd_inject, 16, ses->ses_iv);
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} else {
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bcopy(ses->ses_iv,
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crp->crp_buf + crd->crd_inject, 16);
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}
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}
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} else {
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cw->cw_direction = PADLOCK_DIRECTION_DECRYPT;
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key = ses->ses_dkey;
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if ((crd->crd_flags & CRD_F_IV_EXPLICIT) != 0)
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bcopy(crd->crd_iv, ses->ses_iv, 16);
|
||||
else {
|
||||
if ((crp->crp_flags & CRYPTO_F_IMBUF) != 0) {
|
||||
m_copydata((struct mbuf *)crp->crp_buf,
|
||||
crd->crd_inject, 16, ses->ses_iv);
|
||||
} else if ((crp->crp_flags & CRYPTO_F_IOV) != 0) {
|
||||
cuio_copydata((struct uio *)crp->crp_buf,
|
||||
crd->crd_inject, 16, ses->ses_iv);
|
||||
} else {
|
||||
bcopy(crp->crp_buf + crd->crd_inject,
|
||||
ses->ses_iv, 16);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ((crp->crp_flags & CRYPTO_F_IMBUF) != 0) {
|
||||
m_copydata((struct mbuf *)crp->crp_buf, crd->crd_skip,
|
||||
crd->crd_len, abuf);
|
||||
} else if ((crp->crp_flags & CRYPTO_F_IOV) != 0) {
|
||||
cuio_copydata((struct uio *)crp->crp_buf, crd->crd_skip,
|
||||
crd->crd_len, abuf);
|
||||
} else {
|
||||
bcopy(crp->crp_buf + crd->crd_skip, abuf, crd->crd_len);
|
||||
}
|
||||
|
||||
padlock_cbc(abuf, abuf, crd->crd_len / 16, key, cw, ses->ses_iv);
|
||||
|
||||
if ((crp->crp_flags & CRYPTO_F_IMBUF) != 0) {
|
||||
m_copyback((struct mbuf *)crp->crp_buf, crd->crd_skip,
|
||||
crd->crd_len, abuf);
|
||||
} else if ((crp->crp_flags & CRYPTO_F_IOV) != 0) {
|
||||
cuio_copyback((struct uio *)crp->crp_buf, crd->crd_skip,
|
||||
crd->crd_len, abuf);
|
||||
} else {
|
||||
bcopy(abuf, crp->crp_buf + crd->crd_skip, crd->crd_len);
|
||||
}
|
||||
|
||||
/* copy out last block for use as next session IV */
|
||||
if ((crd->crd_flags & CRD_F_ENCRYPT) != 0) {
|
||||
if ((crp->crp_flags & CRYPTO_F_IMBUF) != 0) {
|
||||
m_copydata((struct mbuf *)crp->crp_buf,
|
||||
crd->crd_skip + crd->crd_len - 16, 16, ses->ses_iv);
|
||||
} else if ((crp->crp_flags & CRYPTO_F_IOV) != 0) {
|
||||
cuio_copydata((struct uio *)crp->crp_buf,
|
||||
crd->crd_skip + crd->crd_len - 16, 16, ses->ses_iv);
|
||||
} else {
|
||||
bcopy(crp->crp_buf + crd->crd_skip + crd->crd_len - 16,
|
||||
ses->ses_iv, 16);
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
if (buf != NULL) {
|
||||
bzero(buf, crd->crd_len + 16);
|
||||
free(buf, M_DEVBUF);
|
||||
}
|
||||
crp->crp_etype = err;
|
||||
crypto_done(crp);
|
||||
return (err);
|
||||
}
|
||||
|
||||
static int
|
||||
padlock_modevent(module_t mod, int type, void *unused __unused)
|
||||
{
|
||||
int error;
|
||||
|
||||
error = EOPNOTSUPP;
|
||||
switch (type) {
|
||||
case MOD_LOAD:
|
||||
error = padlock_init();
|
||||
break;
|
||||
case MOD_UNLOAD:
|
||||
error = padlock_destroy();
|
||||
break;
|
||||
}
|
||||
return (error);
|
||||
}
|
||||
|
||||
static moduledata_t padlock_mod = {
|
||||
"padlock",
|
||||
padlock_modevent,
|
||||
0
|
||||
};
|
||||
DECLARE_MODULE(padlock, padlock_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
|
||||
MODULE_VERSION(padlock, 1);
|
||||
MODULE_DEPEND(padlock, crypto, 1, 1, 1);
|
||||
@ -173,6 +173,7 @@ SUBDIR= ${_3dfx} \
|
||||
${_nwfs} \
|
||||
${_oltr} \
|
||||
${_osf1} \
|
||||
${_padlock} \
|
||||
patm \
|
||||
${_pccard} \
|
||||
${_pcfclock} \
|
||||
@ -394,6 +395,11 @@ _iir= iir
|
||||
_ips= ips
|
||||
_mly= mly
|
||||
_nve= nve
|
||||
.if !defined(NO_CRYPT) || defined(ALL_MODULES)
|
||||
.if exists(${.CURDIR}/../crypto/via)
|
||||
_padlock= padlock
|
||||
.endif
|
||||
.endif
|
||||
_s3= s3
|
||||
_twa= twa
|
||||
_vesa= vesa
|
||||
|
||||
8
sys/modules/padlock/Makefile
Normal file
8
sys/modules/padlock/Makefile
Normal file
@ -0,0 +1,8 @@
|
||||
# $FreeBSD$
|
||||
|
||||
.PATH: ${.CURDIR}/../../crypto/via
|
||||
|
||||
KMOD= padlock
|
||||
SRCS= padlock.c
|
||||
|
||||
.include <bsd.kmod.mk>
|
||||
Loading…
Reference in New Issue
Block a user