2006-07-22 16:18:47 +00:00
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/*-
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* Copyright (c) 2005-2006 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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2006-07-25 19:04:26 +00:00
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*
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2006-07-22 16:18:47 +00:00
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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/malloc.h>
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#include <sys/libkern.h>
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2010-06-05 16:00:53 +00:00
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#include <sys/pcpu.h>
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2006-07-25 19:32:58 +00:00
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#include <sys/uio.h>
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2006-07-22 16:18:47 +00:00
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#include <opencrypto/cryptodev.h>
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#include <crypto/rijndael/rijndael.h>
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#include <crypto/via/padlock.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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MALLOC_DECLARE(M_PADLOCK);
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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 void
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padlock_cipher_key_setup(struct padlock_session *ses, caddr_t key, int klen)
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{
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union padlock_cw *cw;
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int i;
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cw = &ses->ses_cw;
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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, key, klen);
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rijndaelKeySetupDec(ses->ses_dkey, key, 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(key, ses->ses_ekey, klen);
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bcopy(key, ses->ses_dkey, klen);
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}
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}
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int
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padlock_cipher_setup(struct padlock_session *ses, struct cryptoini *encini)
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{
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union padlock_cw *cw;
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if (encini->cri_klen != 128 && encini->cri_klen != 192 &&
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encini->cri_klen != 256) {
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return (EINVAL);
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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 (encini->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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if (encini->cri_key != NULL) {
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padlock_cipher_key_setup(ses, encini->cri_key,
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encini->cri_klen);
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}
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arc4rand(ses->ses_iv, sizeof(ses->ses_iv), 0);
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return (0);
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}
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2006-07-25 19:32:58 +00:00
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/*
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* Function checks if the given buffer is already 16 bytes aligned.
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* If it is there is no need to allocate new buffer.
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* If it isn't, new buffer is allocated.
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*/
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static u_char *
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padlock_cipher_alloc(struct cryptodesc *enccrd, struct cryptop *crp,
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int *allocated)
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{
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u_char *addr;
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if (crp->crp_flags & CRYPTO_F_IMBUF)
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goto alloc;
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else {
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if (crp->crp_flags & CRYPTO_F_IOV) {
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struct uio *uio;
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struct iovec *iov;
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uio = (struct uio *)crp->crp_buf;
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if (uio->uio_iovcnt != 1)
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goto alloc;
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iov = uio->uio_iov;
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addr = (u_char *)iov->iov_base + enccrd->crd_skip;
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} else {
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addr = (u_char *)crp->crp_buf;
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}
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if (((uintptr_t)addr & 0xf) != 0) /* 16 bytes aligned? */
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goto alloc;
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*allocated = 0;
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return (addr);
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}
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alloc:
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*allocated = 1;
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addr = malloc(enccrd->crd_len + 16, M_PADLOCK, M_NOWAIT);
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return (addr);
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}
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2006-07-22 16:18:47 +00:00
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int
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padlock_cipher_process(struct padlock_session *ses, struct cryptodesc *enccrd,
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struct cryptop *crp)
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{
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union padlock_cw *cw;
|
2010-06-05 16:00:53 +00:00
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struct thread *td;
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2006-07-22 16:18:47 +00:00
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u_char *buf, *abuf;
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uint32_t *key;
|
2010-11-26 14:35:20 +00:00
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int allocated, error, saved_ctx;
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2006-07-22 16:18:47 +00:00
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2006-07-25 19:32:58 +00:00
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buf = padlock_cipher_alloc(enccrd, crp, &allocated);
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2006-07-22 16:18:47 +00:00
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if (buf == NULL)
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return (ENOMEM);
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/* Buffer has to be 16 bytes aligned. */
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abuf = PADLOCK_ALIGN(buf);
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if ((enccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0) {
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padlock_cipher_key_setup(ses, enccrd->crd_key,
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enccrd->crd_klen);
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}
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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 ((enccrd->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 ((enccrd->crd_flags & CRD_F_IV_EXPLICIT) != 0)
|
2006-09-15 10:44:55 +00:00
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bcopy(enccrd->crd_iv, ses->ses_iv, AES_BLOCK_LEN);
|
2006-07-22 16:18:47 +00:00
|
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if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) {
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crypto_copyback(crp->crp_flags, crp->crp_buf,
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enccrd->crd_inject, AES_BLOCK_LEN, ses->ses_iv);
|
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|
|
}
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} else {
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|
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cw->cw_direction = PADLOCK_DIRECTION_DECRYPT;
|
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|
|
key = ses->ses_dkey;
|
|
|
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if ((enccrd->crd_flags & CRD_F_IV_EXPLICIT) != 0)
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|
|
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bcopy(enccrd->crd_iv, ses->ses_iv, AES_BLOCK_LEN);
|
|
|
|
else {
|
|
|
|
crypto_copydata(crp->crp_flags, crp->crp_buf,
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|
|
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enccrd->crd_inject, AES_BLOCK_LEN, ses->ses_iv);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-07-25 19:32:58 +00:00
|
|
|
if (allocated) {
|
|
|
|
crypto_copydata(crp->crp_flags, crp->crp_buf, enccrd->crd_skip,
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|
|
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enccrd->crd_len, abuf);
|
|
|
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}
|
2006-07-22 16:18:47 +00:00
|
|
|
|
2010-06-05 16:00:53 +00:00
|
|
|
td = curthread;
|
2010-11-26 14:35:20 +00:00
|
|
|
if (!is_fpu_kern_thread(0)) {
|
Add support for the extended FPU states on amd64, both for native
64bit and 32bit ABIs. As a side-effect, it enables AVX on capable
CPUs.
In particular:
- Query the CPU support for XSAVE, list of the supported extensions
and the required size of FPU save area. The hw.use_xsave tunable is
provided for disabling XSAVE, and hw.xsave_mask may be used to
select the enabled extensions.
- Remove the FPU save area from PCB and dynamically allocate the
(run-time sized) user save area on the top of the kernel stack,
right above the PCB. Reorganize the thread0 PCB initialization to
postpone it after BSP is queried for save area size.
- The dumppcb, stoppcbs and susppcbs now do not carry the FPU state as
well. FPU state is only useful for suspend, where it is saved in
dynamically allocated suspfpusave area.
- Use XSAVE and XRSTOR to save/restore FPU state, if supported and
enabled.
- Define new mcontext_t flag _MC_HASFPXSTATE, indicating that
mcontext_t has a valid pointer to out-of-struct extended FPU
state. Signal handlers are supplied with stack-allocated fpu
state. The sigreturn(2) and setcontext(2) syscall honour the flag,
allowing the signal handlers to inspect and manipilate extended
state in the interrupted context.
- The getcontext(2) never returns extended state, since there is no
place in the fixed-sized mcontext_t to place variable-sized save
area. And, since mcontext_t is embedded into ucontext_t, makes it
impossible to fix in a reasonable way. Instead of extending
getcontext(2) syscall, provide a sysarch(2) facility to query
extended FPU state.
- Add ptrace(2) support for getting and setting extended state; while
there, implement missed PT_I386_{GET,SET}XMMREGS for 32bit binaries.
- Change fpu_kern KPI to not expose struct fpu_kern_ctx layout to
consumers, making it opaque. Internally, struct fpu_kern_ctx now
contains a space for the extended state. Convert in-kernel consumers
of fpu_kern KPI both on i386 and amd64.
First version of the support for AVX was submitted by Tim Bird
<tim.bird am sony com> on behalf of Sony. This version was written
from scratch.
Tested by: pho (previous version), Yamagi Burmeister <lists yamagi org>
MFC after: 1 month
2012-01-21 17:45:27 +00:00
|
|
|
error = fpu_kern_enter(td, ses->ses_fpu_ctx, FPU_KERN_NORMAL);
|
2010-11-26 14:35:20 +00:00
|
|
|
saved_ctx = 1;
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|
|
|
} else {
|
|
|
|
error = 0;
|
|
|
|
saved_ctx = 0;
|
|
|
|
}
|
2010-06-05 16:00:53 +00:00
|
|
|
if (error != 0)
|
|
|
|
goto out;
|
|
|
|
|
2006-09-15 10:44:55 +00:00
|
|
|
padlock_cbc(abuf, abuf, enccrd->crd_len / AES_BLOCK_LEN, key, cw,
|
|
|
|
ses->ses_iv);
|
2006-07-22 16:18:47 +00:00
|
|
|
|
2010-11-26 14:35:20 +00:00
|
|
|
if (saved_ctx)
|
Add support for the extended FPU states on amd64, both for native
64bit and 32bit ABIs. As a side-effect, it enables AVX on capable
CPUs.
In particular:
- Query the CPU support for XSAVE, list of the supported extensions
and the required size of FPU save area. The hw.use_xsave tunable is
provided for disabling XSAVE, and hw.xsave_mask may be used to
select the enabled extensions.
- Remove the FPU save area from PCB and dynamically allocate the
(run-time sized) user save area on the top of the kernel stack,
right above the PCB. Reorganize the thread0 PCB initialization to
postpone it after BSP is queried for save area size.
- The dumppcb, stoppcbs and susppcbs now do not carry the FPU state as
well. FPU state is only useful for suspend, where it is saved in
dynamically allocated suspfpusave area.
- Use XSAVE and XRSTOR to save/restore FPU state, if supported and
enabled.
- Define new mcontext_t flag _MC_HASFPXSTATE, indicating that
mcontext_t has a valid pointer to out-of-struct extended FPU
state. Signal handlers are supplied with stack-allocated fpu
state. The sigreturn(2) and setcontext(2) syscall honour the flag,
allowing the signal handlers to inspect and manipilate extended
state in the interrupted context.
- The getcontext(2) never returns extended state, since there is no
place in the fixed-sized mcontext_t to place variable-sized save
area. And, since mcontext_t is embedded into ucontext_t, makes it
impossible to fix in a reasonable way. Instead of extending
getcontext(2) syscall, provide a sysarch(2) facility to query
extended FPU state.
- Add ptrace(2) support for getting and setting extended state; while
there, implement missed PT_I386_{GET,SET}XMMREGS for 32bit binaries.
- Change fpu_kern KPI to not expose struct fpu_kern_ctx layout to
consumers, making it opaque. Internally, struct fpu_kern_ctx now
contains a space for the extended state. Convert in-kernel consumers
of fpu_kern KPI both on i386 and amd64.
First version of the support for AVX was submitted by Tim Bird
<tim.bird am sony com> on behalf of Sony. This version was written
from scratch.
Tested by: pho (previous version), Yamagi Burmeister <lists yamagi org>
MFC after: 1 month
2012-01-21 17:45:27 +00:00
|
|
|
fpu_kern_leave(td, ses->ses_fpu_ctx);
|
2010-06-05 16:00:53 +00:00
|
|
|
|
2006-07-25 19:32:58 +00:00
|
|
|
if (allocated) {
|
|
|
|
crypto_copyback(crp->crp_flags, crp->crp_buf, enccrd->crd_skip,
|
|
|
|
enccrd->crd_len, abuf);
|
|
|
|
}
|
2006-07-22 16:18:47 +00:00
|
|
|
|
|
|
|
/* copy out last block for use as next session IV */
|
|
|
|
if ((enccrd->crd_flags & CRD_F_ENCRYPT) != 0) {
|
|
|
|
crypto_copydata(crp->crp_flags, crp->crp_buf,
|
|
|
|
enccrd->crd_skip + enccrd->crd_len - AES_BLOCK_LEN,
|
|
|
|
AES_BLOCK_LEN, ses->ses_iv);
|
|
|
|
}
|
|
|
|
|
2010-06-05 16:00:53 +00:00
|
|
|
out:
|
2006-07-25 19:32:58 +00:00
|
|
|
if (allocated) {
|
2006-07-22 16:18:47 +00:00
|
|
|
bzero(buf, enccrd->crd_len + 16);
|
|
|
|
free(buf, M_PADLOCK);
|
|
|
|
}
|
2010-06-05 16:00:53 +00:00
|
|
|
return (error);
|
2006-07-22 16:18:47 +00:00
|
|
|
}
|