diff options
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/safe/safe.c')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/safe/safe.c | 2230 |
1 files changed, 0 insertions, 2230 deletions
diff --git a/target/linux/generic/files/crypto/ocf/safe/safe.c b/target/linux/generic/files/crypto/ocf/safe/safe.c deleted file mode 100644 index f4daa5ffb6..0000000000 --- a/target/linux/generic/files/crypto/ocf/safe/safe.c +++ /dev/null @@ -1,2230 +0,0 @@ -/*- - * Linux port done by David McCullough <david_mccullough@mcafee.com> - * Copyright (C) 2004-2010 David McCullough - * The license and original author are listed below. - * - * Copyright (c) 2003 Sam Leffler, Errno Consulting - * Copyright (c) 2003 Global Technology Associates, Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * -__FBSDID("$FreeBSD: src/sys/dev/safe/safe.c,v 1.18 2007/03/21 03:42:50 sam Exp $"); - */ - -#include <linux/version.h> -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) && !defined(AUTOCONF_INCLUDED) -#include <linux/config.h> -#endif -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/wait.h> -#include <linux/sched.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#include <linux/random.h> -#include <linux/skbuff.h> -#include <asm/io.h> - -/* - * SafeNet SafeXcel-1141 hardware crypto accelerator - */ - -#include <cryptodev.h> -#include <uio.h> -#include <safe/safereg.h> -#include <safe/safevar.h> - -#if 1 -#define DPRINTF(a) do { \ - if (debug) { \ - printk("%s: ", sc ? \ - device_get_nameunit(sc->sc_dev) : "safe"); \ - printk a; \ - } \ - } while (0) -#else -#define DPRINTF(a) -#endif - -/* - * until we find a cleaner way, include the BSD md5/sha1 code - * here - */ -#define HMAC_HACK 1 -#ifdef HMAC_HACK -#include <safe/hmachack.h> -#include <safe/md5.h> -#include <safe/md5.c> -#include <safe/sha1.h> -#include <safe/sha1.c> -#endif /* HMAC_HACK */ - -/* add proc entry for this */ -struct safe_stats safestats; - -#define debug safe_debug -int safe_debug = 0; -module_param(safe_debug, int, 0644); -MODULE_PARM_DESC(safe_debug, "Enable debug"); - -static void safe_callback(struct safe_softc *, struct safe_ringentry *); -static void safe_feed(struct safe_softc *, struct safe_ringentry *); -#if defined(CONFIG_OCF_RANDOMHARVEST) && !defined(SAFE_NO_RNG) -static void safe_rng_init(struct safe_softc *); -int safe_rngbufsize = 8; /* 32 bytes each read */ -module_param(safe_rngbufsize, int, 0644); -MODULE_PARM_DESC(safe_rngbufsize, "RNG polling buffer size (32-bit words)"); -int safe_rngmaxalarm = 8; /* max alarms before reset */ -module_param(safe_rngmaxalarm, int, 0644); -MODULE_PARM_DESC(safe_rngmaxalarm, "RNG max alarms before reset"); -#endif /* SAFE_NO_RNG */ - -static void safe_totalreset(struct safe_softc *sc); -static int safe_dmamap_aligned(struct safe_softc *sc, const struct safe_operand *op); -static int safe_dmamap_uniform(struct safe_softc *sc, const struct safe_operand *op); -static int safe_free_entry(struct safe_softc *sc, struct safe_ringentry *re); -static int safe_kprocess(device_t dev, struct cryptkop *krp, int hint); -static int safe_kstart(struct safe_softc *sc); -static int safe_ksigbits(struct safe_softc *sc, struct crparam *cr); -static void safe_kfeed(struct safe_softc *sc); -static void safe_kpoll(unsigned long arg); -static void safe_kload_reg(struct safe_softc *sc, u_int32_t off, - u_int32_t len, struct crparam *n); - -static int safe_newsession(device_t, u_int32_t *, struct cryptoini *); -static int safe_freesession(device_t, u_int64_t); -static int safe_process(device_t, struct cryptop *, int); - -static device_method_t safe_methods = { - /* crypto device methods */ - DEVMETHOD(cryptodev_newsession, safe_newsession), - DEVMETHOD(cryptodev_freesession,safe_freesession), - DEVMETHOD(cryptodev_process, safe_process), - DEVMETHOD(cryptodev_kprocess, safe_kprocess), -}; - -#define READ_REG(sc,r) readl((sc)->sc_base_addr + (r)) -#define WRITE_REG(sc,r,val) writel((val), (sc)->sc_base_addr + (r)) - -#define SAFE_MAX_CHIPS 8 -static struct safe_softc *safe_chip_idx[SAFE_MAX_CHIPS]; - -/* - * split our buffers up into safe DMAable byte fragments to avoid lockup - * bug in 1141 HW on rev 1.0. - */ - -static int -pci_map_linear( - struct safe_softc *sc, - struct safe_operand *buf, - void *addr, - int len) -{ - dma_addr_t tmp; - int chunk, tlen = len; - - tmp = pci_map_single(sc->sc_pcidev, addr, len, PCI_DMA_BIDIRECTIONAL); - - buf->mapsize += len; - while (len > 0) { - chunk = (len > sc->sc_max_dsize) ? sc->sc_max_dsize : len; - buf->segs[buf->nsegs].ds_addr = tmp; - buf->segs[buf->nsegs].ds_len = chunk; - buf->segs[buf->nsegs].ds_tlen = tlen; - buf->nsegs++; - tmp += chunk; - len -= chunk; - tlen = 0; - } - return 0; -} - -/* - * map in a given uio buffer (great on some arches :-) - */ - -static int -pci_map_uio(struct safe_softc *sc, struct safe_operand *buf, struct uio *uio) -{ - struct iovec *iov = uio->uio_iov; - int n; - - DPRINTF(("%s()\n", __FUNCTION__)); - - buf->mapsize = 0; - buf->nsegs = 0; - - for (n = 0; n < uio->uio_iovcnt; n++) { - pci_map_linear(sc, buf, iov->iov_base, iov->iov_len); - iov++; - } - - /* identify this buffer by the first segment */ - buf->map = (void *) buf->segs[0].ds_addr; - return(0); -} - -/* - * map in a given sk_buff - */ - -static int -pci_map_skb(struct safe_softc *sc,struct safe_operand *buf,struct sk_buff *skb) -{ - int i; - - DPRINTF(("%s()\n", __FUNCTION__)); - - buf->mapsize = 0; - buf->nsegs = 0; - - pci_map_linear(sc, buf, skb->data, skb_headlen(skb)); - - for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { - pci_map_linear(sc, buf, - page_address(skb_frag_page(&skb_shinfo(skb)->frags[i])) + - skb_shinfo(skb)->frags[i].page_offset, - skb_shinfo(skb)->frags[i].size); - } - - /* identify this buffer by the first segment */ - buf->map = (void *) buf->segs[0].ds_addr; - return(0); -} - - -#if 0 /* not needed at this time */ -static void -pci_sync_operand(struct safe_softc *sc, struct safe_operand *buf) -{ - int i; - - DPRINTF(("%s()\n", __FUNCTION__)); - for (i = 0; i < buf->nsegs; i++) - pci_dma_sync_single_for_cpu(sc->sc_pcidev, buf->segs[i].ds_addr, - buf->segs[i].ds_len, PCI_DMA_BIDIRECTIONAL); -} -#endif - -static void -pci_unmap_operand(struct safe_softc *sc, struct safe_operand *buf) -{ - int i; - DPRINTF(("%s()\n", __FUNCTION__)); - for (i = 0; i < buf->nsegs; i++) { - if (buf->segs[i].ds_tlen) { - DPRINTF(("%s - unmap %d 0x%x %d\n", __FUNCTION__, i, buf->segs[i].ds_addr, buf->segs[i].ds_tlen)); - pci_unmap_single(sc->sc_pcidev, buf->segs[i].ds_addr, - buf->segs[i].ds_tlen, PCI_DMA_BIDIRECTIONAL); - DPRINTF(("%s - unmap %d 0x%x %d done\n", __FUNCTION__, i, buf->segs[i].ds_addr, buf->segs[i].ds_tlen)); - } - buf->segs[i].ds_addr = 0; - buf->segs[i].ds_len = 0; - buf->segs[i].ds_tlen = 0; - } - buf->nsegs = 0; - buf->mapsize = 0; - buf->map = 0; -} - - -/* - * SafeXcel Interrupt routine - */ -static irqreturn_t -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19) -safe_intr(int irq, void *arg) -#else -safe_intr(int irq, void *arg, struct pt_regs *regs) -#endif -{ - struct safe_softc *sc = arg; - int stat; - unsigned long flags; - - stat = READ_REG(sc, SAFE_HM_STAT); - - DPRINTF(("%s(stat=0x%x)\n", __FUNCTION__, stat)); - - if (stat == 0) /* shared irq, not for us */ - return IRQ_NONE; - - WRITE_REG(sc, SAFE_HI_CLR, stat); /* IACK */ - - if ((stat & SAFE_INT_PE_DDONE)) { - /* - * Descriptor(s) done; scan the ring and - * process completed operations. - */ - spin_lock_irqsave(&sc->sc_ringmtx, flags); - while (sc->sc_back != sc->sc_front) { - struct safe_ringentry *re = sc->sc_back; - -#ifdef SAFE_DEBUG - if (debug) { - safe_dump_ringstate(sc, __func__); - safe_dump_request(sc, __func__, re); - } -#endif - /* - * safe_process marks ring entries that were allocated - * but not used with a csr of zero. This insures the - * ring front pointer never needs to be set backwards - * in the event that an entry is allocated but not used - * because of a setup error. - */ - DPRINTF(("%s re->re_desc.d_csr=0x%x\n", __FUNCTION__, re->re_desc.d_csr)); - if (re->re_desc.d_csr != 0) { - if (!SAFE_PE_CSR_IS_DONE(re->re_desc.d_csr)) { - DPRINTF(("%s !CSR_IS_DONE\n", __FUNCTION__)); - break; - } - if (!SAFE_PE_LEN_IS_DONE(re->re_desc.d_len)) { - DPRINTF(("%s !LEN_IS_DONE\n", __FUNCTION__)); - break; - } - sc->sc_nqchip--; - safe_callback(sc, re); - } - if (++(sc->sc_back) == sc->sc_ringtop) - sc->sc_back = sc->sc_ring; - } - spin_unlock_irqrestore(&sc->sc_ringmtx, flags); - } - - /* - * Check to see if we got any DMA Error - */ - if (stat & SAFE_INT_PE_ERROR) { - printk("%s: dmaerr dmastat %08x\n", device_get_nameunit(sc->sc_dev), - (int)READ_REG(sc, SAFE_PE_DMASTAT)); - safestats.st_dmaerr++; - safe_totalreset(sc); -#if 0 - safe_feed(sc); -#endif - } - - if (sc->sc_needwakeup) { /* XXX check high watermark */ - int wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ); - DPRINTF(("%s: wakeup crypto %x\n", __func__, - sc->sc_needwakeup)); - sc->sc_needwakeup &= ~wakeup; - crypto_unblock(sc->sc_cid, wakeup); - } - - return IRQ_HANDLED; -} - -/* - * safe_feed() - post a request to chip - */ -static void -safe_feed(struct safe_softc *sc, struct safe_ringentry *re) -{ - DPRINTF(("%s()\n", __FUNCTION__)); -#ifdef SAFE_DEBUG - if (debug) { - safe_dump_ringstate(sc, __func__); - safe_dump_request(sc, __func__, re); - } -#endif - sc->sc_nqchip++; - if (sc->sc_nqchip > safestats.st_maxqchip) - safestats.st_maxqchip = sc->sc_nqchip; - /* poke h/w to check descriptor ring, any value can be written */ - WRITE_REG(sc, SAFE_HI_RD_DESCR, 0); -} - -#define N(a) (sizeof(a) / sizeof (a[0])) -static void -safe_setup_enckey(struct safe_session *ses, caddr_t key) -{ - int i; - - bcopy(key, ses->ses_key, ses->ses_klen / 8); - - /* PE is little-endian, insure proper byte order */ - for (i = 0; i < N(ses->ses_key); i++) - ses->ses_key[i] = htole32(ses->ses_key[i]); -} - -static void -safe_setup_mackey(struct safe_session *ses, int algo, caddr_t key, int klen) -{ -#ifdef HMAC_HACK - MD5_CTX md5ctx; - SHA1_CTX sha1ctx; - int i; - - - for (i = 0; i < klen; i++) - key[i] ^= HMAC_IPAD_VAL; - - if (algo == CRYPTO_MD5_HMAC) { - MD5Init(&md5ctx); - MD5Update(&md5ctx, key, klen); - MD5Update(&md5ctx, hmac_ipad_buffer, MD5_HMAC_BLOCK_LEN - klen); - bcopy(md5ctx.md5_st8, ses->ses_hminner, sizeof(md5ctx.md5_st8)); - } else { - SHA1Init(&sha1ctx); - SHA1Update(&sha1ctx, key, klen); - SHA1Update(&sha1ctx, hmac_ipad_buffer, - SHA1_HMAC_BLOCK_LEN - klen); - bcopy(sha1ctx.h.b32, ses->ses_hminner, sizeof(sha1ctx.h.b32)); - } - - for (i = 0; i < klen; i++) - key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL); - - if (algo == CRYPTO_MD5_HMAC) { - MD5Init(&md5ctx); - MD5Update(&md5ctx, key, klen); - MD5Update(&md5ctx, hmac_opad_buffer, MD5_HMAC_BLOCK_LEN - klen); - bcopy(md5ctx.md5_st8, ses->ses_hmouter, sizeof(md5ctx.md5_st8)); - } else { - SHA1Init(&sha1ctx); - SHA1Update(&sha1ctx, key, klen); - SHA1Update(&sha1ctx, hmac_opad_buffer, - SHA1_HMAC_BLOCK_LEN - klen); - bcopy(sha1ctx.h.b32, ses->ses_hmouter, sizeof(sha1ctx.h.b32)); - } - - for (i = 0; i < klen; i++) - key[i] ^= HMAC_OPAD_VAL; - -#if 0 - /* - * this code prevents SHA working on a BE host, - * so it is obviously wrong. I think the byte - * swap setup we do with the chip fixes this for us - */ - - /* PE is little-endian, insure proper byte order */ - for (i = 0; i < N(ses->ses_hminner); i++) { - ses->ses_hminner[i] = htole32(ses->ses_hminner[i]); - ses->ses_hmouter[i] = htole32(ses->ses_hmouter[i]); - } -#endif -#else /* HMAC_HACK */ - printk("safe: md5/sha not implemented\n"); -#endif /* HMAC_HACK */ -} -#undef N - -/* - * Allocate a new 'session' and return an encoded session id. 'sidp' - * contains our registration id, and should contain an encoded session - * id on successful allocation. - */ -static int -safe_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri) -{ - struct safe_softc *sc = device_get_softc(dev); - struct cryptoini *c, *encini = NULL, *macini = NULL; - struct safe_session *ses = NULL; - int sesn; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (sidp == NULL || cri == NULL || sc == NULL) - return (EINVAL); - - for (c = cri; c != NULL; c = c->cri_next) { - if (c->cri_alg == CRYPTO_MD5_HMAC || - c->cri_alg == CRYPTO_SHA1_HMAC || - c->cri_alg == CRYPTO_NULL_HMAC) { - if (macini) - return (EINVAL); - macini = c; - } else if (c->cri_alg == CRYPTO_DES_CBC || - c->cri_alg == CRYPTO_3DES_CBC || - c->cri_alg == CRYPTO_AES_CBC || - c->cri_alg == CRYPTO_NULL_CBC) { - if (encini) - return (EINVAL); - encini = c; - } else - return (EINVAL); - } - if (encini == NULL && macini == NULL) - return (EINVAL); - if (encini) { /* validate key length */ - switch (encini->cri_alg) { - case CRYPTO_DES_CBC: - if (encini->cri_klen != 64) - return (EINVAL); - break; - case CRYPTO_3DES_CBC: - if (encini->cri_klen != 192) - return (EINVAL); - break; - case CRYPTO_AES_CBC: - if (encini->cri_klen != 128 && - encini->cri_klen != 192 && - encini->cri_klen != 256) - return (EINVAL); - break; - } - } - - if (sc->sc_sessions == NULL) { - ses = sc->sc_sessions = (struct safe_session *) - kmalloc(sizeof(struct safe_session), SLAB_ATOMIC); - if (ses == NULL) - return (ENOMEM); - memset(ses, 0, sizeof(struct safe_session)); - sesn = 0; - sc->sc_nsessions = 1; - } else { - for (sesn = 0; sesn < sc->sc_nsessions; sesn++) { - if (sc->sc_sessions[sesn].ses_used == 0) { - ses = &sc->sc_sessions[sesn]; - break; - } - } - - if (ses == NULL) { - sesn = sc->sc_nsessions; - ses = (struct safe_session *) - kmalloc((sesn + 1) * sizeof(struct safe_session), SLAB_ATOMIC); - if (ses == NULL) - return (ENOMEM); - memset(ses, 0, (sesn + 1) * sizeof(struct safe_session)); - bcopy(sc->sc_sessions, ses, sesn * - sizeof(struct safe_session)); - bzero(sc->sc_sessions, sesn * - sizeof(struct safe_session)); - kfree(sc->sc_sessions); - sc->sc_sessions = ses; - ses = &sc->sc_sessions[sesn]; - sc->sc_nsessions++; - } - } - - bzero(ses, sizeof(struct safe_session)); - ses->ses_used = 1; - - if (encini) { - ses->ses_klen = encini->cri_klen; - if (encini->cri_key != NULL) - safe_setup_enckey(ses, encini->cri_key); - } - - if (macini) { - ses->ses_mlen = macini->cri_mlen; - if (ses->ses_mlen == 0) { - if (macini->cri_alg == CRYPTO_MD5_HMAC) - ses->ses_mlen = MD5_HASH_LEN; - else - ses->ses_mlen = SHA1_HASH_LEN; - } - - if (macini->cri_key != NULL) { - safe_setup_mackey(ses, macini->cri_alg, macini->cri_key, - macini->cri_klen / 8); - } - } - - *sidp = SAFE_SID(device_get_unit(sc->sc_dev), sesn); - return (0); -} - -/* - * Deallocate a session. - */ -static int -safe_freesession(device_t dev, u_int64_t tid) -{ - struct safe_softc *sc = device_get_softc(dev); - int session, ret; - u_int32_t sid = ((u_int32_t) tid) & 0xffffffff; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (sc == NULL) - return (EINVAL); - - session = SAFE_SESSION(sid); - if (session < sc->sc_nsessions) { - bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session])); - ret = 0; - } else - ret = EINVAL; - return (ret); -} - - -static int -safe_process(device_t dev, struct cryptop *crp, int hint) -{ - struct safe_softc *sc = device_get_softc(dev); - int err = 0, i, nicealign, uniform; - struct cryptodesc *crd1, *crd2, *maccrd, *enccrd; - int bypass, oplen, ivsize; - caddr_t iv; - int16_t coffset; - struct safe_session *ses; - struct safe_ringentry *re; - struct safe_sarec *sa; - struct safe_pdesc *pd; - u_int32_t cmd0, cmd1, staterec, rand_iv[4]; - unsigned long flags; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (crp == NULL || crp->crp_callback == NULL || sc == NULL) { - safestats.st_invalid++; - return (EINVAL); - } - if (SAFE_SESSION(crp->crp_sid) >= sc->sc_nsessions) { - safestats.st_badsession++; - return (EINVAL); - } - - spin_lock_irqsave(&sc->sc_ringmtx, flags); - if (sc->sc_front == sc->sc_back && sc->sc_nqchip != 0) { - safestats.st_ringfull++; - sc->sc_needwakeup |= CRYPTO_SYMQ; - spin_unlock_irqrestore(&sc->sc_ringmtx, flags); - return (ERESTART); - } - re = sc->sc_front; - - staterec = re->re_sa.sa_staterec; /* save */ - /* NB: zero everything but the PE descriptor */ - bzero(&re->re_sa, sizeof(struct safe_ringentry) - sizeof(re->re_desc)); - re->re_sa.sa_staterec = staterec; /* restore */ - - re->re_crp = crp; - re->re_sesn = SAFE_SESSION(crp->crp_sid); - - re->re_src.nsegs = 0; - re->re_dst.nsegs = 0; - - if (crp->crp_flags & CRYPTO_F_SKBUF) { - re->re_src_skb = (struct sk_buff *)crp->crp_buf; - re->re_dst_skb = (struct sk_buff *)crp->crp_buf; - } else if (crp->crp_flags & CRYPTO_F_IOV) { - re->re_src_io = (struct uio *)crp->crp_buf; - re->re_dst_io = (struct uio *)crp->crp_buf; - } else { - safestats.st_badflags++; - err = EINVAL; - goto errout; /* XXX we don't handle contiguous blocks! */ - } - - sa = &re->re_sa; - ses = &sc->sc_sessions[re->re_sesn]; - - crd1 = crp->crp_desc; - if (crd1 == NULL) { - safestats.st_nodesc++; - err = EINVAL; - goto errout; - } - crd2 = crd1->crd_next; - - cmd0 = SAFE_SA_CMD0_BASIC; /* basic group operation */ - cmd1 = 0; - if (crd2 == NULL) { - if (crd1->crd_alg == CRYPTO_MD5_HMAC || - crd1->crd_alg == CRYPTO_SHA1_HMAC || - crd1->crd_alg == CRYPTO_NULL_HMAC) { - maccrd = crd1; - enccrd = NULL; - cmd0 |= SAFE_SA_CMD0_OP_HASH; - } else if (crd1->crd_alg == CRYPTO_DES_CBC || - crd1->crd_alg == CRYPTO_3DES_CBC || - crd1->crd_alg == CRYPTO_AES_CBC || - crd1->crd_alg == CRYPTO_NULL_CBC) { - maccrd = NULL; - enccrd = crd1; - cmd0 |= SAFE_SA_CMD0_OP_CRYPT; - } else { - safestats.st_badalg++; - err = EINVAL; - goto errout; - } - } else { - if ((crd1->crd_alg == CRYPTO_MD5_HMAC || - crd1->crd_alg == CRYPTO_SHA1_HMAC || - crd1->crd_alg == CRYPTO_NULL_HMAC) && - (crd2->crd_alg == CRYPTO_DES_CBC || - crd2->crd_alg == CRYPTO_3DES_CBC || - crd2->crd_alg == CRYPTO_AES_CBC || - crd2->crd_alg == CRYPTO_NULL_CBC) && - ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) { - maccrd = crd1; - enccrd = crd2; - } else if ((crd1->crd_alg == CRYPTO_DES_CBC || - crd1->crd_alg == CRYPTO_3DES_CBC || - crd1->crd_alg == CRYPTO_AES_CBC || - crd1->crd_alg == CRYPTO_NULL_CBC) && - (crd2->crd_alg == CRYPTO_MD5_HMAC || - crd2->crd_alg == CRYPTO_SHA1_HMAC || - crd2->crd_alg == CRYPTO_NULL_HMAC) && - (crd1->crd_flags & CRD_F_ENCRYPT)) { - enccrd = crd1; - maccrd = crd2; - } else { - safestats.st_badalg++; - err = EINVAL; - goto errout; - } - cmd0 |= SAFE_SA_CMD0_OP_BOTH; - } - - if (enccrd) { - if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT) - safe_setup_enckey(ses, enccrd->crd_key); - - if (enccrd->crd_alg == CRYPTO_DES_CBC) { - cmd0 |= SAFE_SA_CMD0_DES; - cmd1 |= SAFE_SA_CMD1_CBC; - ivsize = 2*sizeof(u_int32_t); - } else if (enccrd->crd_alg == CRYPTO_3DES_CBC) { - cmd0 |= SAFE_SA_CMD0_3DES; - cmd1 |= SAFE_SA_CMD1_CBC; - ivsize = 2*sizeof(u_int32_t); - } else if (enccrd->crd_alg == CRYPTO_AES_CBC) { - cmd0 |= SAFE_SA_CMD0_AES; - cmd1 |= SAFE_SA_CMD1_CBC; - if (ses->ses_klen == 128) - cmd1 |= SAFE_SA_CMD1_AES128; - else if (ses->ses_klen == 192) - cmd1 |= SAFE_SA_CMD1_AES192; - else - cmd1 |= SAFE_SA_CMD1_AES256; - ivsize = 4*sizeof(u_int32_t); - } else { - cmd0 |= SAFE_SA_CMD0_CRYPT_NULL; - ivsize = 0; - } - - /* - * Setup encrypt/decrypt state. When using basic ops - * we can't use an inline IV because hash/crypt offset - * must be from the end of the IV to the start of the - * crypt data and this leaves out the preceding header - * from the hash calculation. Instead we place the IV - * in the state record and set the hash/crypt offset to - * copy both the header+IV. - */ - if (enccrd->crd_flags & CRD_F_ENCRYPT) { - cmd0 |= SAFE_SA_CMD0_OUTBOUND; - - if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) - iv = enccrd->crd_iv; - else - read_random((iv = (caddr_t) &rand_iv[0]), sizeof(rand_iv)); - if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) { - crypto_copyback(crp->crp_flags, crp->crp_buf, - enccrd->crd_inject, ivsize, iv); - } - bcopy(iv, re->re_sastate.sa_saved_iv, ivsize); - /* make iv LE */ - for (i = 0; i < ivsize/sizeof(re->re_sastate.sa_saved_iv[0]); i++) - re->re_sastate.sa_saved_iv[i] = - cpu_to_le32(re->re_sastate.sa_saved_iv[i]); - cmd0 |= SAFE_SA_CMD0_IVLD_STATE | SAFE_SA_CMD0_SAVEIV; - re->re_flags |= SAFE_QFLAGS_COPYOUTIV; - } else { - cmd0 |= SAFE_SA_CMD0_INBOUND; - - if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) { - bcopy(enccrd->crd_iv, - re->re_sastate.sa_saved_iv, ivsize); - } else { - crypto_copydata(crp->crp_flags, crp->crp_buf, - enccrd->crd_inject, ivsize, - (caddr_t)re->re_sastate.sa_saved_iv); - } - /* make iv LE */ - for (i = 0; i < ivsize/sizeof(re->re_sastate.sa_saved_iv[0]); i++) - re->re_sastate.sa_saved_iv[i] = - cpu_to_le32(re->re_sastate.sa_saved_iv[i]); - cmd0 |= SAFE_SA_CMD0_IVLD_STATE; - } - /* - * For basic encryption use the zero pad algorithm. - * This pads results to an 8-byte boundary and - * suppresses padding verification for inbound (i.e. - * decrypt) operations. - * - * NB: Not sure if the 8-byte pad boundary is a problem. - */ - cmd0 |= SAFE_SA_CMD0_PAD_ZERO; - - /* XXX assert key bufs have the same size */ - bcopy(ses->ses_key, sa->sa_key, sizeof(sa->sa_key)); - } - - if (maccrd) { - if (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) { - safe_setup_mackey(ses, maccrd->crd_alg, - maccrd->crd_key, maccrd->crd_klen / 8); - } - - if (maccrd->crd_alg == CRYPTO_MD5_HMAC) { - cmd0 |= SAFE_SA_CMD0_MD5; - cmd1 |= SAFE_SA_CMD1_HMAC; /* NB: enable HMAC */ - } else if (maccrd->crd_alg == CRYPTO_SHA1_HMAC) { - cmd0 |= SAFE_SA_CMD0_SHA1; - cmd1 |= SAFE_SA_CMD1_HMAC; /* NB: enable HMAC */ - } else { - cmd0 |= SAFE_SA_CMD0_HASH_NULL; - } - /* - * Digest data is loaded from the SA and the hash - * result is saved to the state block where we - * retrieve it for return to the caller. - */ - /* XXX assert digest bufs have the same size */ - bcopy(ses->ses_hminner, sa->sa_indigest, - sizeof(sa->sa_indigest)); - bcopy(ses->ses_hmouter, sa->sa_outdigest, - sizeof(sa->sa_outdigest)); - - cmd0 |= SAFE_SA_CMD0_HSLD_SA | SAFE_SA_CMD0_SAVEHASH; - re->re_flags |= SAFE_QFLAGS_COPYOUTICV; - } - - if (enccrd && maccrd) { - /* - * The offset from hash data to the start of - * crypt data is the difference in the skips. - */ - bypass = maccrd->crd_skip; - coffset = enccrd->crd_skip - maccrd->crd_skip; - if (coffset < 0) { - DPRINTF(("%s: hash does not precede crypt; " - "mac skip %u enc skip %u\n", - __func__, maccrd->crd_skip, enccrd->crd_skip)); - safestats.st_skipmismatch++; - err = EINVAL; - goto errout; - } - oplen = enccrd->crd_skip + enccrd->crd_len; - if (maccrd->crd_skip + maccrd->crd_len != oplen) { - DPRINTF(("%s: hash amount %u != crypt amount %u\n", - __func__, maccrd->crd_skip + maccrd->crd_len, - oplen)); - safestats.st_lenmismatch++; - err = EINVAL; - goto errout; - } -#ifdef SAFE_DEBUG - if (debug) { - printf("mac: skip %d, len %d, inject %d\n", - maccrd->crd_skip, maccrd->crd_len, - maccrd->crd_inject); - printf("enc: skip %d, len %d, inject %d\n", - enccrd->crd_skip, enccrd->crd_len, - enccrd->crd_inject); - printf("bypass %d coffset %d oplen %d\n", - bypass, coffset, oplen); - } -#endif - if (coffset & 3) { /* offset must be 32-bit aligned */ - DPRINTF(("%s: coffset %u misaligned\n", - __func__, coffset)); - safestats.st_coffmisaligned++; - err = EINVAL; - goto errout; - } - coffset >>= 2; - if (coffset > 255) { /* offset must be <256 dwords */ - DPRINTF(("%s: coffset %u too big\n", - __func__, coffset)); - safestats.st_cofftoobig++; - err = EINVAL; - goto errout; - } - /* - * Tell the hardware to copy the header to the output. - * The header is defined as the data from the end of - * the bypass to the start of data to be encrypted. - * Typically this is the inline IV. Note that you need - * to do this even if src+dst are the same; it appears - * that w/o this bit the crypted data is written - * immediately after the bypass data. - */ - cmd1 |= SAFE_SA_CMD1_HDRCOPY; - /* - * Disable IP header mutable bit handling. This is - * needed to get correct HMAC calculations. - */ - cmd1 |= SAFE_SA_CMD1_MUTABLE; - } else { - if (enccrd) { - bypass = enccrd->crd_skip; - oplen = bypass + enccrd->crd_len; - } else { - bypass = maccrd->crd_skip; - oplen = bypass + maccrd->crd_len; - } - coffset = 0; - } - /* XXX verify multiple of 4 when using s/g */ - if (bypass > 96) { /* bypass offset must be <= 96 bytes */ - DPRINTF(("%s: bypass %u too big\n", __func__, bypass)); - safestats.st_bypasstoobig++; - err = EINVAL; - goto errout; - } - - if (crp->crp_flags & CRYPTO_F_SKBUF) { - if (pci_map_skb(sc, &re->re_src, re->re_src_skb)) { - safestats.st_noload++; - err = ENOMEM; - goto errout; - } - } else if (crp->crp_flags & CRYPTO_F_IOV) { - if (pci_map_uio(sc, &re->re_src, re->re_src_io)) { - safestats.st_noload++; - err = ENOMEM; - goto errout; - } - } - nicealign = safe_dmamap_aligned(sc, &re->re_src); - uniform = safe_dmamap_uniform(sc, &re->re_src); - - DPRINTF(("src nicealign %u uniform %u nsegs %u\n", - nicealign, uniform, re->re_src.nsegs)); - if (re->re_src.nsegs > 1) { - re->re_desc.d_src = sc->sc_spalloc.dma_paddr + - ((caddr_t) sc->sc_spfree - (caddr_t) sc->sc_spring); - for (i = 0; i < re->re_src_nsegs; i++) { - /* NB: no need to check if there's space */ - pd = sc->sc_spfree; - if (++(sc->sc_spfree) == sc->sc_springtop) - sc->sc_spfree = sc->sc_spring; - - KASSERT((pd->pd_flags&3) == 0 || - (pd->pd_flags&3) == SAFE_PD_DONE, - ("bogus source particle descriptor; flags %x", - pd->pd_flags)); - pd->pd_addr = re->re_src_segs[i].ds_addr; - pd->pd_size = re->re_src_segs[i].ds_len; - pd->pd_flags = SAFE_PD_READY; - } - cmd0 |= SAFE_SA_CMD0_IGATHER; - } else { - /* - * No need for gather, reference the operand directly. - */ - re->re_desc.d_src = re->re_src_segs[0].ds_addr; - } - - if (enccrd == NULL && maccrd != NULL) { - /* - * Hash op; no destination needed. - */ - } else { - if (crp->crp_flags & (CRYPTO_F_IOV|CRYPTO_F_SKBUF)) { - if (!nicealign) { - safestats.st_iovmisaligned++; - err = EINVAL; - goto errout; - } - if (uniform != 1) { - device_printf(sc->sc_dev, "!uniform source\n"); - if (!uniform) { - /* - * There's no way to handle the DMA - * requirements with this uio. We - * could create a separate DMA area for - * the result and then copy it back, - * but for now we just bail and return - * an error. Note that uio requests - * > SAFE_MAX_DSIZE are handled because - * the DMA map and segment list for the - * destination wil result in a - * destination particle list that does - * the necessary scatter DMA. - */ - safestats.st_iovnotuniform++; - err = EINVAL; - goto errout; - } - } else - re->re_dst = re->re_src; - } else { - safestats.st_badflags++; - err = EINVAL; - goto errout; - } - - if (re->re_dst.nsegs > 1) { - re->re_desc.d_dst = sc->sc_dpalloc.dma_paddr + - ((caddr_t) sc->sc_dpfree - (caddr_t) sc->sc_dpring); - for (i = 0; i < re->re_dst_nsegs; i++) { - pd = sc->sc_dpfree; - KASSERT((pd->pd_flags&3) == 0 || - (pd->pd_flags&3) == SAFE_PD_DONE, - ("bogus dest particle descriptor; flags %x", - pd->pd_flags)); - if (++(sc->sc_dpfree) == sc->sc_dpringtop) - sc->sc_dpfree = sc->sc_dpring; - pd->pd_addr = re->re_dst_segs[i].ds_addr; - pd->pd_flags = SAFE_PD_READY; - } - cmd0 |= SAFE_SA_CMD0_OSCATTER; - } else { - /* - * No need for scatter, reference the operand directly. - */ - re->re_desc.d_dst = re->re_dst_segs[0].ds_addr; - } - } - - /* - * All done with setup; fillin the SA command words - * and the packet engine descriptor. The operation - * is now ready for submission to the hardware. - */ - sa->sa_cmd0 = cmd0 | SAFE_SA_CMD0_IPCI | SAFE_SA_CMD0_OPCI; - sa->sa_cmd1 = cmd1 - | (coffset << SAFE_SA_CMD1_OFFSET_S) - | SAFE_SA_CMD1_SAREV1 /* Rev 1 SA data structure */ - | SAFE_SA_CMD1_SRPCI - ; - /* - * NB: the order of writes is important here. In case the - * chip is scanning the ring because of an outstanding request - * it might nab this one too. In that case we need to make - * sure the setup is complete before we write the length - * field of the descriptor as it signals the descriptor is - * ready for processing. - */ - re->re_desc.d_csr = SAFE_PE_CSR_READY | SAFE_PE_CSR_SAPCI; - if (maccrd) - re->re_desc.d_csr |= SAFE_PE_CSR_LOADSA | SAFE_PE_CSR_HASHFINAL; - wmb(); - re->re_desc.d_len = oplen - | SAFE_PE_LEN_READY - | (bypass << SAFE_PE_LEN_BYPASS_S) - ; - - safestats.st_ipackets++; - safestats.st_ibytes += oplen; - - if (++(sc->sc_front) == sc->sc_ringtop) - sc->sc_front = sc->sc_ring; - - /* XXX honor batching */ - safe_feed(sc, re); - spin_unlock_irqrestore(&sc->sc_ringmtx, flags); - return (0); - -errout: - if (re->re_src.map != re->re_dst.map) - pci_unmap_operand(sc, &re->re_dst); - if (re->re_src.map) - pci_unmap_operand(sc, &re->re_src); - spin_unlock_irqrestore(&sc->sc_ringmtx, flags); - if (err != ERESTART) { - crp->crp_etype = err; - crypto_done(crp); - } else { - sc->sc_needwakeup |= CRYPTO_SYMQ; - } - return (err); -} - -static void -safe_callback(struct safe_softc *sc, struct safe_ringentry *re) -{ - struct cryptop *crp = (struct cryptop *)re->re_crp; - struct cryptodesc *crd; - - DPRINTF(("%s()\n", __FUNCTION__)); - - safestats.st_opackets++; - safestats.st_obytes += re->re_dst.mapsize; - - if (re->re_desc.d_csr & SAFE_PE_CSR_STATUS) { - device_printf(sc->sc_dev, "csr 0x%x cmd0 0x%x cmd1 0x%x\n", - re->re_desc.d_csr, - re->re_sa.sa_cmd0, re->re_sa.sa_cmd1); - safestats.st_peoperr++; - crp->crp_etype = EIO; /* something more meaningful? */ - } - - if (re->re_dst.map != NULL && re->re_dst.map != re->re_src.map) - pci_unmap_operand(sc, &re->re_dst); - pci_unmap_operand(sc, &re->re_src); - - /* - * If result was written to a differet mbuf chain, swap - * it in as the return value and reclaim the original. - */ - if ((crp->crp_flags & CRYPTO_F_SKBUF) && re->re_src_skb != re->re_dst_skb) { - device_printf(sc->sc_dev, "no CRYPTO_F_SKBUF swapping support\n"); - /* kfree_skb(skb) */ - /* crp->crp_buf = (caddr_t)re->re_dst_skb */ - return; - } - - if (re->re_flags & SAFE_QFLAGS_COPYOUTICV) { - /* copy out ICV result */ - for (crd = crp->crp_desc; crd; crd = crd->crd_next) { - if (!(crd->crd_alg == CRYPTO_MD5_HMAC || - crd->crd_alg == CRYPTO_SHA1_HMAC || - crd->crd_alg == CRYPTO_NULL_HMAC)) - continue; - if (crd->crd_alg == CRYPTO_SHA1_HMAC) { - /* - * SHA-1 ICV's are byte-swapped; fix 'em up - * before copy them to their destination. - */ - re->re_sastate.sa_saved_indigest[0] = - cpu_to_be32(re->re_sastate.sa_saved_indigest[0]); - re->re_sastate.sa_saved_indigest[1] = - cpu_to_be32(re->re_sastate.sa_saved_indigest[1]); - re->re_sastate.sa_saved_indigest[2] = - cpu_to_be32(re->re_sastate.sa_saved_indigest[2]); - } else { - re->re_sastate.sa_saved_indigest[0] = - cpu_to_le32(re->re_sastate.sa_saved_indigest[0]); - re->re_sastate.sa_saved_indigest[1] = - cpu_to_le32(re->re_sastate.sa_saved_indigest[1]); - re->re_sastate.sa_saved_indigest[2] = - cpu_to_le32(re->re_sastate.sa_saved_indigest[2]); - } - crypto_copyback(crp->crp_flags, crp->crp_buf, - crd->crd_inject, - sc->sc_sessions[re->re_sesn].ses_mlen, - (caddr_t)re->re_sastate.sa_saved_indigest); - break; - } - } - crypto_done(crp); -} - - -#if defined(CONFIG_OCF_RANDOMHARVEST) && !defined(SAFE_NO_RNG) -#define SAFE_RNG_MAXWAIT 1000 - -static void -safe_rng_init(struct safe_softc *sc) -{ - u_int32_t w, v; - int i; - - DPRINTF(("%s()\n", __FUNCTION__)); - - WRITE_REG(sc, SAFE_RNG_CTRL, 0); - /* use default value according to the manual */ - WRITE_REG(sc, SAFE_RNG_CNFG, 0x834); /* magic from SafeNet */ - WRITE_REG(sc, SAFE_RNG_ALM_CNT, 0); - - /* - * There is a bug in rev 1.0 of the 1140 that when the RNG - * is brought out of reset the ready status flag does not - * work until the RNG has finished its internal initialization. - * - * So in order to determine the device is through its - * initialization we must read the data register, using the - * status reg in the read in case it is initialized. Then read - * the data register until it changes from the first read. - * Once it changes read the data register until it changes - * again. At this time the RNG is considered initialized. - * This could take between 750ms - 1000ms in time. - */ - i = 0; - w = READ_REG(sc, SAFE_RNG_OUT); - do { - v = READ_REG(sc, SAFE_RNG_OUT); - if (v != w) { - w = v; - break; - } - DELAY(10); - } while (++i < SAFE_RNG_MAXWAIT); - - /* Wait Until data changes again */ - i = 0; - do { - v = READ_REG(sc, SAFE_RNG_OUT); - if (v != w) - break; - DELAY(10); - } while (++i < SAFE_RNG_MAXWAIT); -} - -static __inline void -safe_rng_disable_short_cycle(struct safe_softc *sc) -{ - DPRINTF(("%s()\n", __FUNCTION__)); - - WRITE_REG(sc, SAFE_RNG_CTRL, - READ_REG(sc, SAFE_RNG_CTRL) &~ SAFE_RNG_CTRL_SHORTEN); -} - -static __inline void -safe_rng_enable_short_cycle(struct safe_softc *sc) -{ - DPRINTF(("%s()\n", __FUNCTION__)); - - WRITE_REG(sc, SAFE_RNG_CTRL, - READ_REG(sc, SAFE_RNG_CTRL) | SAFE_RNG_CTRL_SHORTEN); -} - -static __inline u_int32_t -safe_rng_read(struct safe_softc *sc) -{ - int i; - - i = 0; - while (READ_REG(sc, SAFE_RNG_STAT) != 0 && ++i < SAFE_RNG_MAXWAIT) - ; - return READ_REG(sc, SAFE_RNG_OUT); -} - -static int -safe_read_random(void *arg, u_int32_t *buf, int maxwords) -{ - struct safe_softc *sc = (struct safe_softc *) arg; - int i, rc; - - DPRINTF(("%s()\n", __FUNCTION__)); - - safestats.st_rng++; - /* - * Fetch the next block of data. - */ - if (maxwords > safe_rngbufsize) - maxwords = safe_rngbufsize; - if (maxwords > SAFE_RNG_MAXBUFSIZ) - maxwords = SAFE_RNG_MAXBUFSIZ; -retry: - /* read as much as we can */ - for (rc = 0; rc < maxwords; rc++) { - if (READ_REG(sc, SAFE_RNG_STAT) != 0) - break; - buf[rc] = READ_REG(sc, SAFE_RNG_OUT); - } - if (rc == 0) - return 0; - /* - * Check the comparator alarm count and reset the h/w if - * it exceeds our threshold. This guards against the - * hardware oscillators resonating with external signals. - */ - if (READ_REG(sc, SAFE_RNG_ALM_CNT) > safe_rngmaxalarm) { - u_int32_t freq_inc, w; - - DPRINTF(("%s: alarm count %u exceeds threshold %u\n", __func__, - (unsigned)READ_REG(sc, SAFE_RNG_ALM_CNT), safe_rngmaxalarm)); - safestats.st_rngalarm++; - safe_rng_enable_short_cycle(sc); - freq_inc = 18; - for (i = 0; i < 64; i++) { - w = READ_REG(sc, SAFE_RNG_CNFG); - freq_inc = ((w + freq_inc) & 0x3fL); - w = ((w & ~0x3fL) | freq_inc); - WRITE_REG(sc, SAFE_RNG_CNFG, w); - - WRITE_REG(sc, SAFE_RNG_ALM_CNT, 0); - - (void) safe_rng_read(sc); - DELAY(25); - - if (READ_REG(sc, SAFE_RNG_ALM_CNT) == 0) { - safe_rng_disable_short_cycle(sc); - goto retry; - } - freq_inc = 1; - } - safe_rng_disable_short_cycle(sc); - } else - WRITE_REG(sc, SAFE_RNG_ALM_CNT, 0); - - return(rc); -} -#endif /* defined(CONFIG_OCF_RANDOMHARVEST) && !defined(SAFE_NO_RNG) */ - - -/* - * Resets the board. Values in the regesters are left as is - * from the reset (i.e. initial values are assigned elsewhere). - */ -static void -safe_reset_board(struct safe_softc *sc) -{ - u_int32_t v; - /* - * Reset the device. The manual says no delay - * is needed between marking and clearing reset. - */ - DPRINTF(("%s()\n", __FUNCTION__)); - - v = READ_REG(sc, SAFE_PE_DMACFG) &~ - (SAFE_PE_DMACFG_PERESET | SAFE_PE_DMACFG_PDRRESET | - SAFE_PE_DMACFG_SGRESET); - WRITE_REG(sc, SAFE_PE_DMACFG, v - | SAFE_PE_DMACFG_PERESET - | SAFE_PE_DMACFG_PDRRESET - | SAFE_PE_DMACFG_SGRESET); - WRITE_REG(sc, SAFE_PE_DMACFG, v); -} - -/* - * Initialize registers we need to touch only once. - */ -static void -safe_init_board(struct safe_softc *sc) -{ - u_int32_t v, dwords; - - DPRINTF(("%s()\n", __FUNCTION__)); - - v = READ_REG(sc, SAFE_PE_DMACFG); - v &=~ ( SAFE_PE_DMACFG_PEMODE - | SAFE_PE_DMACFG_FSENA /* failsafe enable */ - | SAFE_PE_DMACFG_GPRPCI /* gather ring on PCI */ - | SAFE_PE_DMACFG_SPRPCI /* scatter ring on PCI */ - | SAFE_PE_DMACFG_ESDESC /* endian-swap descriptors */ - | SAFE_PE_DMACFG_ESPDESC /* endian-swap part. desc's */ - | SAFE_PE_DMACFG_ESSA /* endian-swap SA's */ - | SAFE_PE_DMACFG_ESPACKET /* swap the packet data */ - ); - v |= SAFE_PE_DMACFG_FSENA /* failsafe enable */ - | SAFE_PE_DMACFG_GPRPCI /* gather ring on PCI */ - | SAFE_PE_DMACFG_SPRPCI /* scatter ring on PCI */ - | SAFE_PE_DMACFG_ESDESC /* endian-swap descriptors */ - | SAFE_PE_DMACFG_ESPDESC /* endian-swap part. desc's */ - | SAFE_PE_DMACFG_ESSA /* endian-swap SA's */ -#if 0 - | SAFE_PE_DMACFG_ESPACKET /* swap the packet data */ -#endif - ; - WRITE_REG(sc, SAFE_PE_DMACFG, v); - -#ifdef __BIG_ENDIAN - /* tell the safenet that we are 4321 and not 1234 */ - WRITE_REG(sc, SAFE_ENDIAN, 0xe4e41b1b); -#endif - - if (sc->sc_chiprev == SAFE_REV(1,0)) { - /* - * Avoid large PCI DMA transfers. Rev 1.0 has a bug where - * "target mode transfers" done while the chip is DMA'ing - * >1020 bytes cause the hardware to lockup. To avoid this - * we reduce the max PCI transfer size and use small source - * particle descriptors (<= 256 bytes). - */ - WRITE_REG(sc, SAFE_DMA_CFG, 256); - device_printf(sc->sc_dev, - "Reduce max DMA size to %u words for rev %u.%u WAR\n", - (unsigned) ((READ_REG(sc, SAFE_DMA_CFG)>>2) & 0xff), - (unsigned) SAFE_REV_MAJ(sc->sc_chiprev), - (unsigned) SAFE_REV_MIN(sc->sc_chiprev)); - sc->sc_max_dsize = 256; - } else { - sc->sc_max_dsize = SAFE_MAX_DSIZE; - } - - /* NB: operands+results are overlaid */ - WRITE_REG(sc, SAFE_PE_PDRBASE, sc->sc_ringalloc.dma_paddr); - WRITE_REG(sc, SAFE_PE_RDRBASE, sc->sc_ringalloc.dma_paddr); - /* - * Configure ring entry size and number of items in the ring. - */ - KASSERT((sizeof(struct safe_ringentry) % sizeof(u_int32_t)) == 0, - ("PE ring entry not 32-bit aligned!")); - dwords = sizeof(struct safe_ringentry) / sizeof(u_int32_t); - WRITE_REG(sc, SAFE_PE_RINGCFG, - (dwords << SAFE_PE_RINGCFG_OFFSET_S) | SAFE_MAX_NQUEUE); - WRITE_REG(sc, SAFE_PE_RINGPOLL, 0); /* disable polling */ - - WRITE_REG(sc, SAFE_PE_GRNGBASE, sc->sc_spalloc.dma_paddr); - WRITE_REG(sc, SAFE_PE_SRNGBASE, sc->sc_dpalloc.dma_paddr); - WRITE_REG(sc, SAFE_PE_PARTSIZE, - (SAFE_TOTAL_DPART<<16) | SAFE_TOTAL_SPART); - /* - * NB: destination particles are fixed size. We use - * an mbuf cluster and require all results go to - * clusters or smaller. - */ - WRITE_REG(sc, SAFE_PE_PARTCFG, sc->sc_max_dsize); - - /* it's now safe to enable PE mode, do it */ - WRITE_REG(sc, SAFE_PE_DMACFG, v | SAFE_PE_DMACFG_PEMODE); - - /* - * Configure hardware to use level-triggered interrupts and - * to interrupt after each descriptor is processed. - */ - WRITE_REG(sc, SAFE_HI_CFG, SAFE_HI_CFG_LEVEL); - WRITE_REG(sc, SAFE_HI_CLR, 0xffffffff); - WRITE_REG(sc, SAFE_HI_DESC_CNT, 1); - WRITE_REG(sc, SAFE_HI_MASK, SAFE_INT_PE_DDONE | SAFE_INT_PE_ERROR); -} - - -/* - * Clean up after a chip crash. - * It is assumed that the caller in splimp() - */ -static void -safe_cleanchip(struct safe_softc *sc) -{ - DPRINTF(("%s()\n", __FUNCTION__)); - - if (sc->sc_nqchip != 0) { - struct safe_ringentry *re = sc->sc_back; - - while (re != sc->sc_front) { - if (re->re_desc.d_csr != 0) - safe_free_entry(sc, re); - if (++re == sc->sc_ringtop) - re = sc->sc_ring; - } - sc->sc_back = re; - sc->sc_nqchip = 0; - } -} - -/* - * free a safe_q - * It is assumed that the caller is within splimp(). - */ -static int -safe_free_entry(struct safe_softc *sc, struct safe_ringentry *re) -{ - struct cryptop *crp; - - DPRINTF(("%s()\n", __FUNCTION__)); - - /* - * Free header MCR - */ - if ((re->re_dst_skb != NULL) && (re->re_src_skb != re->re_dst_skb)) -#ifdef NOTYET - m_freem(re->re_dst_m); -#else - printk("%s,%d: SKB not supported\n", __FILE__, __LINE__); -#endif - - crp = (struct cryptop *)re->re_crp; - - re->re_desc.d_csr = 0; - - crp->crp_etype = EFAULT; - crypto_done(crp); - return(0); -} - -/* - * Routine to reset the chip and clean up. - * It is assumed that the caller is in splimp() - */ -static void -safe_totalreset(struct safe_softc *sc) -{ - DPRINTF(("%s()\n", __FUNCTION__)); - - safe_reset_board(sc); - safe_init_board(sc); - safe_cleanchip(sc); -} - -/* - * Is the operand suitable aligned for direct DMA. Each - * segment must be aligned on a 32-bit boundary and all - * but the last segment must be a multiple of 4 bytes. - */ -static int -safe_dmamap_aligned(struct safe_softc *sc, const struct safe_operand *op) -{ - int i; - - DPRINTF(("%s()\n", __FUNCTION__)); - - for (i = 0; i < op->nsegs; i++) { - if (op->segs[i].ds_addr & 3) - return (0); - if (i != (op->nsegs - 1) && (op->segs[i].ds_len & 3)) - return (0); - } - return (1); -} - -/* - * Is the operand suitable for direct DMA as the destination - * of an operation. The hardware requires that each ``particle'' - * but the last in an operation result have the same size. We - * fix that size at SAFE_MAX_DSIZE bytes. This routine returns - * 0 if some segment is not a multiple of of this size, 1 if all - * segments are exactly this size, or 2 if segments are at worst - * a multple of this size. - */ -static int -safe_dmamap_uniform(struct safe_softc *sc, const struct safe_operand *op) -{ - int result = 1; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (op->nsegs > 0) { - int i; - - for (i = 0; i < op->nsegs-1; i++) { - if (op->segs[i].ds_len % sc->sc_max_dsize) - return (0); - if (op->segs[i].ds_len != sc->sc_max_dsize) - result = 2; - } - } - return (result); -} - -static int -safe_kprocess(device_t dev, struct cryptkop *krp, int hint) -{ - struct safe_softc *sc = device_get_softc(dev); - struct safe_pkq *q; - unsigned long flags; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (sc == NULL) { - krp->krp_status = EINVAL; - goto err; - } - - if (krp->krp_op != CRK_MOD_EXP) { - krp->krp_status = EOPNOTSUPP; - goto err; - } - - q = (struct safe_pkq *) kmalloc(sizeof(*q), GFP_KERNEL); - if (q == NULL) { - krp->krp_status = ENOMEM; - goto err; - } - memset(q, 0, sizeof(*q)); - q->pkq_krp = krp; - INIT_LIST_HEAD(&q->pkq_list); - - spin_lock_irqsave(&sc->sc_pkmtx, flags); - list_add_tail(&q->pkq_list, &sc->sc_pkq); - safe_kfeed(sc); - spin_unlock_irqrestore(&sc->sc_pkmtx, flags); - return (0); - -err: - crypto_kdone(krp); - return (0); -} - -#define SAFE_CRK_PARAM_BASE 0 -#define SAFE_CRK_PARAM_EXP 1 -#define SAFE_CRK_PARAM_MOD 2 - -static int -safe_kstart(struct safe_softc *sc) -{ - struct cryptkop *krp = sc->sc_pkq_cur->pkq_krp; - int exp_bits, mod_bits, base_bits; - u_int32_t op, a_off, b_off, c_off, d_off; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (krp->krp_iparams < 3 || krp->krp_oparams != 1) { - krp->krp_status = EINVAL; - return (1); - } - - base_bits = safe_ksigbits(sc, &krp->krp_param[SAFE_CRK_PARAM_BASE]); - if (base_bits > 2048) - goto too_big; - if (base_bits <= 0) /* 5. base not zero */ - goto too_small; - - exp_bits = safe_ksigbits(sc, &krp->krp_param[SAFE_CRK_PARAM_EXP]); - if (exp_bits > 2048) - goto too_big; - if (exp_bits <= 0) /* 1. exponent word length > 0 */ - goto too_small; /* 4. exponent not zero */ - - mod_bits = safe_ksigbits(sc, &krp->krp_param[SAFE_CRK_PARAM_MOD]); - if (mod_bits > 2048) - goto too_big; - if (mod_bits <= 32) /* 2. modulus word length > 1 */ - goto too_small; /* 8. MSW of modulus != zero */ - if (mod_bits < exp_bits) /* 3 modulus len >= exponent len */ - goto too_small; - if ((krp->krp_param[SAFE_CRK_PARAM_MOD].crp_p[0] & 1) == 0) - goto bad_domain; /* 6. modulus is odd */ - if (mod_bits > krp->krp_param[krp->krp_iparams].crp_nbits) - goto too_small; /* make sure result will fit */ - - /* 7. modulus > base */ - if (mod_bits < base_bits) - goto too_small; - if (mod_bits == base_bits) { - u_int8_t *basep, *modp; - int i; - - basep = krp->krp_param[SAFE_CRK_PARAM_BASE].crp_p + - ((base_bits + 7) / 8) - 1; - modp = krp->krp_param[SAFE_CRK_PARAM_MOD].crp_p + - ((mod_bits + 7) / 8) - 1; - - for (i = 0; i < (mod_bits + 7) / 8; i++, basep--, modp--) { - if (*modp < *basep) - goto too_small; - if (*modp > *basep) - break; - } - } - - /* And on the 9th step, he rested. */ - - WRITE_REG(sc, SAFE_PK_A_LEN, (exp_bits + 31) / 32); - WRITE_REG(sc, SAFE_PK_B_LEN, (mod_bits + 31) / 32); - if (mod_bits > 1024) { - op = SAFE_PK_FUNC_EXP4; - a_off = 0x000; - b_off = 0x100; - c_off = 0x200; - d_off = 0x300; - } else { - op = SAFE_PK_FUNC_EXP16; - a_off = 0x000; - b_off = 0x080; - c_off = 0x100; - d_off = 0x180; - } - sc->sc_pk_reslen = b_off - a_off; - sc->sc_pk_resoff = d_off; - - /* A is exponent, B is modulus, C is base, D is result */ - safe_kload_reg(sc, a_off, b_off - a_off, - &krp->krp_param[SAFE_CRK_PARAM_EXP]); - WRITE_REG(sc, SAFE_PK_A_ADDR, a_off >> 2); - safe_kload_reg(sc, b_off, b_off - a_off, - &krp->krp_param[SAFE_CRK_PARAM_MOD]); - WRITE_REG(sc, SAFE_PK_B_ADDR, b_off >> 2); - safe_kload_reg(sc, c_off, b_off - a_off, - &krp->krp_param[SAFE_CRK_PARAM_BASE]); - WRITE_REG(sc, SAFE_PK_C_ADDR, c_off >> 2); - WRITE_REG(sc, SAFE_PK_D_ADDR, d_off >> 2); - - WRITE_REG(sc, SAFE_PK_FUNC, op | SAFE_PK_FUNC_RUN); - - return (0); - -too_big: - krp->krp_status = E2BIG; - return (1); -too_small: - krp->krp_status = ERANGE; - return (1); -bad_domain: - krp->krp_status = EDOM; - return (1); -} - -static int -safe_ksigbits(struct safe_softc *sc, struct crparam *cr) -{ - u_int plen = (cr->crp_nbits + 7) / 8; - int i, sig = plen * 8; - u_int8_t c, *p = cr->crp_p; - - DPRINTF(("%s()\n", __FUNCTION__)); - - for (i = plen - 1; i >= 0; i--) { - c = p[i]; - if (c != 0) { - while ((c & 0x80) == 0) { - sig--; - c <<= 1; - } - break; - } - sig -= 8; - } - return (sig); -} - -static void -safe_kfeed(struct safe_softc *sc) -{ - struct safe_pkq *q, *tmp; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (list_empty(&sc->sc_pkq) && sc->sc_pkq_cur == NULL) - return; - if (sc->sc_pkq_cur != NULL) - return; - list_for_each_entry_safe(q, tmp, &sc->sc_pkq, pkq_list) { - sc->sc_pkq_cur = q; - list_del(&q->pkq_list); - if (safe_kstart(sc) != 0) { - crypto_kdone(q->pkq_krp); - kfree(q); - sc->sc_pkq_cur = NULL; - } else { - /* op started, start polling */ - mod_timer(&sc->sc_pkto, jiffies + 1); - break; - } - } -} - -static void -safe_kpoll(unsigned long arg) -{ - struct safe_softc *sc = NULL; - struct safe_pkq *q; - struct crparam *res; - int i; - u_int32_t buf[64]; - unsigned long flags; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (arg >= SAFE_MAX_CHIPS) - return; - sc = safe_chip_idx[arg]; - if (!sc) { - DPRINTF(("%s() - bad callback\n", __FUNCTION__)); - return; - } - - spin_lock_irqsave(&sc->sc_pkmtx, flags); - if (sc->sc_pkq_cur == NULL) - goto out; - if (READ_REG(sc, SAFE_PK_FUNC) & SAFE_PK_FUNC_RUN) { - /* still running, check back later */ - mod_timer(&sc->sc_pkto, jiffies + 1); - goto out; - } - - q = sc->sc_pkq_cur; - res = &q->pkq_krp->krp_param[q->pkq_krp->krp_iparams]; - bzero(buf, sizeof(buf)); - bzero(res->crp_p, (res->crp_nbits + 7) / 8); - for (i = 0; i < sc->sc_pk_reslen >> 2; i++) - buf[i] = le32_to_cpu(READ_REG(sc, SAFE_PK_RAM_START + - sc->sc_pk_resoff + (i << 2))); - bcopy(buf, res->crp_p, (res->crp_nbits + 7) / 8); - /* - * reduce the bits that need copying if possible - */ - res->crp_nbits = min(res->crp_nbits,sc->sc_pk_reslen * 8); - res->crp_nbits = safe_ksigbits(sc, res); - - for (i = SAFE_PK_RAM_START; i < SAFE_PK_RAM_END; i += 4) - WRITE_REG(sc, i, 0); - - crypto_kdone(q->pkq_krp); - kfree(q); - sc->sc_pkq_cur = NULL; - - safe_kfeed(sc); -out: - spin_unlock_irqrestore(&sc->sc_pkmtx, flags); -} - -static void -safe_kload_reg(struct safe_softc *sc, u_int32_t off, u_int32_t len, - struct crparam *n) -{ - u_int32_t buf[64], i; - - DPRINTF(("%s()\n", __FUNCTION__)); - - bzero(buf, sizeof(buf)); - bcopy(n->crp_p, buf, (n->crp_nbits + 7) / 8); - - for (i = 0; i < len >> 2; i++) - WRITE_REG(sc, SAFE_PK_RAM_START + off + (i << 2), - cpu_to_le32(buf[i])); -} - -#ifdef SAFE_DEBUG -static void -safe_dump_dmastatus(struct safe_softc *sc, const char *tag) -{ - printf("%s: ENDIAN 0x%x SRC 0x%x DST 0x%x STAT 0x%x\n" - , tag - , READ_REG(sc, SAFE_DMA_ENDIAN) - , READ_REG(sc, SAFE_DMA_SRCADDR) - , READ_REG(sc, SAFE_DMA_DSTADDR) - , READ_REG(sc, SAFE_DMA_STAT) - ); -} - -static void -safe_dump_intrstate(struct safe_softc *sc, const char *tag) -{ - printf("%s: HI_CFG 0x%x HI_MASK 0x%x HI_DESC_CNT 0x%x HU_STAT 0x%x HM_STAT 0x%x\n" - , tag - , READ_REG(sc, SAFE_HI_CFG) - , READ_REG(sc, SAFE_HI_MASK) - , READ_REG(sc, SAFE_HI_DESC_CNT) - , READ_REG(sc, SAFE_HU_STAT) - , READ_REG(sc, SAFE_HM_STAT) - ); -} - -static void -safe_dump_ringstate(struct safe_softc *sc, const char *tag) -{ - u_int32_t estat = READ_REG(sc, SAFE_PE_ERNGSTAT); - - /* NB: assume caller has lock on ring */ - printf("%s: ERNGSTAT %x (next %u) back %lu front %lu\n", - tag, - estat, (estat >> SAFE_PE_ERNGSTAT_NEXT_S), - (unsigned long)(sc->sc_back - sc->sc_ring), - (unsigned long)(sc->sc_front - sc->sc_ring)); -} - -static void -safe_dump_request(struct safe_softc *sc, const char* tag, struct safe_ringentry *re) -{ - int ix, nsegs; - - ix = re - sc->sc_ring; - printf("%s: %p (%u): csr %x src %x dst %x sa %x len %x\n" - , tag - , re, ix - , re->re_desc.d_csr - , re->re_desc.d_src - , re->re_desc.d_dst - , re->re_desc.d_sa - , re->re_desc.d_len - ); - if (re->re_src.nsegs > 1) { - ix = (re->re_desc.d_src - sc->sc_spalloc.dma_paddr) / - sizeof(struct safe_pdesc); - for (nsegs = re->re_src.nsegs; nsegs; nsegs--) { - printf(" spd[%u] %p: %p size %u flags %x" - , ix, &sc->sc_spring[ix] - , (caddr_t)(uintptr_t) sc->sc_spring[ix].pd_addr - , sc->sc_spring[ix].pd_size - , sc->sc_spring[ix].pd_flags - ); - if (sc->sc_spring[ix].pd_size == 0) - printf(" (zero!)"); - printf("\n"); - if (++ix == SAFE_TOTAL_SPART) - ix = 0; - } - } - if (re->re_dst.nsegs > 1) { - ix = (re->re_desc.d_dst - sc->sc_dpalloc.dma_paddr) / - sizeof(struct safe_pdesc); - for (nsegs = re->re_dst.nsegs; nsegs; nsegs--) { - printf(" dpd[%u] %p: %p flags %x\n" - , ix, &sc->sc_dpring[ix] - , (caddr_t)(uintptr_t) sc->sc_dpring[ix].pd_addr - , sc->sc_dpring[ix].pd_flags - ); - if (++ix == SAFE_TOTAL_DPART) - ix = 0; - } - } - printf("sa: cmd0 %08x cmd1 %08x staterec %x\n", - re->re_sa.sa_cmd0, re->re_sa.sa_cmd1, re->re_sa.sa_staterec); - printf("sa: key %x %x %x %x %x %x %x %x\n" - , re->re_sa.sa_key[0] - , re->re_sa.sa_key[1] - , re->re_sa.sa_key[2] - , re->re_sa.sa_key[3] - , re->re_sa.sa_key[4] - , re->re_sa.sa_key[5] - , re->re_sa.sa_key[6] - , re->re_sa.sa_key[7] - ); - printf("sa: indigest %x %x %x %x %x\n" - , re->re_sa.sa_indigest[0] - , re->re_sa.sa_indigest[1] - , re->re_sa.sa_indigest[2] - , re->re_sa.sa_indigest[3] - , re->re_sa.sa_indigest[4] - ); - printf("sa: outdigest %x %x %x %x %x\n" - , re->re_sa.sa_outdigest[0] - , re->re_sa.sa_outdigest[1] - , re->re_sa.sa_outdigest[2] - , re->re_sa.sa_outdigest[3] - , re->re_sa.sa_outdigest[4] - ); - printf("sr: iv %x %x %x %x\n" - , re->re_sastate.sa_saved_iv[0] - , re->re_sastate.sa_saved_iv[1] - , re->re_sastate.sa_saved_iv[2] - , re->re_sastate.sa_saved_iv[3] - ); - printf("sr: hashbc %u indigest %x %x %x %x %x\n" - , re->re_sastate.sa_saved_hashbc - , re->re_sastate.sa_saved_indigest[0] - , re->re_sastate.sa_saved_indigest[1] - , re->re_sastate.sa_saved_indigest[2] - , re->re_sastate.sa_saved_indigest[3] - , re->re_sastate.sa_saved_indigest[4] - ); -} - -static void -safe_dump_ring(struct safe_softc *sc, const char *tag) -{ - unsigned long flags; - - spin_lock_irqsave(&sc->sc_ringmtx, flags); - printf("\nSafeNet Ring State:\n"); - safe_dump_intrstate(sc, tag); - safe_dump_dmastatus(sc, tag); - safe_dump_ringstate(sc, tag); - if (sc->sc_nqchip) { - struct safe_ringentry *re = sc->sc_back; - do { - safe_dump_request(sc, tag, re); - if (++re == sc->sc_ringtop) - re = sc->sc_ring; - } while (re != sc->sc_front); - } - spin_unlock_irqrestore(&sc->sc_ringmtx, flags); -} -#endif /* SAFE_DEBUG */ - - -static int safe_probe(struct pci_dev *dev, const struct pci_device_id *ent) -{ - struct safe_softc *sc = NULL; - u32 mem_start, mem_len, cmd; - int i, rc, devinfo; - dma_addr_t raddr; - static int num_chips = 0; - - DPRINTF(("%s()\n", __FUNCTION__)); - - if (pci_enable_device(dev) < 0) - return(-ENODEV); - - if (!dev->irq) { - printk("safe: found device with no IRQ assigned. check BIOS settings!"); - pci_disable_device(dev); - return(-ENODEV); - } - - if (pci_set_mwi(dev)) { - printk("safe: pci_set_mwi failed!"); - return(-ENODEV); - } - - sc = (struct safe_softc *) kmalloc(sizeof(*sc), GFP_KERNEL); - if (!sc) - return(-ENOMEM); - memset(sc, 0, sizeof(*sc)); - - softc_device_init(sc, "safe", num_chips, safe_methods); - - sc->sc_irq = -1; - sc->sc_cid = -1; - sc->sc_pcidev = dev; - if (num_chips < SAFE_MAX_CHIPS) { - safe_chip_idx[device_get_unit(sc->sc_dev)] = sc; - num_chips++; - } - - INIT_LIST_HEAD(&sc->sc_pkq); - spin_lock_init(&sc->sc_pkmtx); - - pci_set_drvdata(sc->sc_pcidev, sc); - - /* we read its hardware registers as memory */ - mem_start = pci_resource_start(sc->sc_pcidev, 0); - mem_len = pci_resource_len(sc->sc_pcidev, 0); - - sc->sc_base_addr = (ocf_iomem_t) ioremap(mem_start, mem_len); - if (!sc->sc_base_addr) { - device_printf(sc->sc_dev, "failed to ioremap 0x%x-0x%x\n", - mem_start, mem_start + mem_len - 1); - goto out; - } - - /* fix up the bus size */ - if (pci_set_dma_mask(sc->sc_pcidev, DMA_32BIT_MASK)) { - device_printf(sc->sc_dev, "No usable DMA configuration, aborting.\n"); - goto out; - } - if (pci_set_consistent_dma_mask(sc->sc_pcidev, DMA_32BIT_MASK)) { - device_printf(sc->sc_dev, "No usable consistent DMA configuration, aborting.\n"); - goto out; - } - - pci_set_master(sc->sc_pcidev); - - pci_read_config_dword(sc->sc_pcidev, PCI_COMMAND, &cmd); - - if (!(cmd & PCI_COMMAND_MEMORY)) { - device_printf(sc->sc_dev, "failed to enable memory mapping\n"); - goto out; - } - - if (!(cmd & PCI_COMMAND_MASTER)) { - device_printf(sc->sc_dev, "failed to enable bus mastering\n"); - goto out; - } - - rc = request_irq(dev->irq, safe_intr, IRQF_SHARED, "safe", sc); - if (rc) { - device_printf(sc->sc_dev, "failed to hook irq %d\n", sc->sc_irq); - goto out; - } - sc->sc_irq = dev->irq; - - sc->sc_chiprev = READ_REG(sc, SAFE_DEVINFO) & - (SAFE_DEVINFO_REV_MAJ | SAFE_DEVINFO_REV_MIN); - - /* - * Allocate packet engine descriptors. - */ - sc->sc_ringalloc.dma_vaddr = pci_alloc_consistent(sc->sc_pcidev, - SAFE_MAX_NQUEUE * sizeof (struct safe_ringentry), - &sc->sc_ringalloc.dma_paddr); - if (!sc->sc_ringalloc.dma_vaddr) { - device_printf(sc->sc_dev, "cannot allocate PE descriptor ring\n"); - goto out; - } - - /* - * Hookup the static portion of all our data structures. - */ - sc->sc_ring = (struct safe_ringentry *) sc->sc_ringalloc.dma_vaddr; - sc->sc_ringtop = sc->sc_ring + SAFE_MAX_NQUEUE; - sc->sc_front = sc->sc_ring; - sc->sc_back = sc->sc_ring; - raddr = sc->sc_ringalloc.dma_paddr; - bzero(sc->sc_ring, SAFE_MAX_NQUEUE * sizeof(struct safe_ringentry)); - for (i = 0; i < SAFE_MAX_NQUEUE; i++) { - struct safe_ringentry *re = &sc->sc_ring[i]; - - re->re_desc.d_sa = raddr + - offsetof(struct safe_ringentry, re_sa); - re->re_sa.sa_staterec = raddr + - offsetof(struct safe_ringentry, re_sastate); - - raddr += sizeof (struct safe_ringentry); - } - spin_lock_init(&sc->sc_ringmtx); - - /* - * Allocate scatter and gather particle descriptors. - */ - sc->sc_spalloc.dma_vaddr = pci_alloc_consistent(sc->sc_pcidev, - SAFE_TOTAL_SPART * sizeof (struct safe_pdesc), - &sc->sc_spalloc.dma_paddr); - if (!sc->sc_spalloc.dma_vaddr) { - device_printf(sc->sc_dev, "cannot allocate source particle descriptor ring\n"); - goto out; - } - sc->sc_spring = (struct safe_pdesc *) sc->sc_spalloc.dma_vaddr; - sc->sc_springtop = sc->sc_spring + SAFE_TOTAL_SPART; - sc->sc_spfree = sc->sc_spring; - bzero(sc->sc_spring, SAFE_TOTAL_SPART * sizeof(struct safe_pdesc)); - - sc->sc_dpalloc.dma_vaddr = pci_alloc_consistent(sc->sc_pcidev, - SAFE_TOTAL_DPART * sizeof (struct safe_pdesc), - &sc->sc_dpalloc.dma_paddr); - if (!sc->sc_dpalloc.dma_vaddr) { - device_printf(sc->sc_dev, "cannot allocate destination particle descriptor ring\n"); - goto out; - } - sc->sc_dpring = (struct safe_pdesc *) sc->sc_dpalloc.dma_vaddr; - sc->sc_dpringtop = sc->sc_dpring + SAFE_TOTAL_DPART; - sc->sc_dpfree = sc->sc_dpring; - bzero(sc->sc_dpring, SAFE_TOTAL_DPART * sizeof(struct safe_pdesc)); - - sc->sc_cid = crypto_get_driverid(softc_get_device(sc), CRYPTOCAP_F_HARDWARE); - if (sc->sc_cid < 0) { - device_printf(sc->sc_dev, "could not get crypto driver id\n"); - goto out; - } - - printf("%s:", device_get_nameunit(sc->sc_dev)); - - devinfo = READ_REG(sc, SAFE_DEVINFO); - if (devinfo & SAFE_DEVINFO_RNG) { - sc->sc_flags |= SAFE_FLAGS_RNG; - printf(" rng"); - } - if (devinfo & SAFE_DEVINFO_PKEY) { - printf(" key"); - sc->sc_flags |= SAFE_FLAGS_KEY; - crypto_kregister(sc->sc_cid, CRK_MOD_EXP, 0); -#if 0 - crypto_kregister(sc->sc_cid, CRK_MOD_EXP_CRT, 0); -#endif - init_timer(&sc->sc_pkto); - sc->sc_pkto.function = safe_kpoll; - sc->sc_pkto.data = (unsigned long) device_get_unit(sc->sc_dev); - } - if (devinfo & SAFE_DEVINFO_DES) { - printf(" des/3des"); - crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0); - crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0); - } - if (devinfo & SAFE_DEVINFO_AES) { - printf(" aes"); - crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0); - } - if (devinfo & SAFE_DEVINFO_MD5) { - printf(" md5"); - crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0); - } - if (devinfo & SAFE_DEVINFO_SHA1) { - printf(" sha1"); - crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0); - } - printf(" null"); - crypto_register(sc->sc_cid, CRYPTO_NULL_CBC, 0, 0); - crypto_register(sc->sc_cid, CRYPTO_NULL_HMAC, 0, 0); - /* XXX other supported algorithms */ - printf("\n"); - - safe_reset_board(sc); /* reset h/w */ - safe_init_board(sc); /* init h/w */ - -#if defined(CONFIG_OCF_RANDOMHARVEST) && !defined(SAFE_NO_RNG) - if (sc->sc_flags & SAFE_FLAGS_RNG) { - safe_rng_init(sc); - crypto_rregister(sc->sc_cid, safe_read_random, sc); - } -#endif /* SAFE_NO_RNG */ - - return (0); - -out: - if (sc->sc_cid >= 0) - crypto_unregister_all(sc->sc_cid); - if (sc->sc_irq != -1) - free_irq(sc->sc_irq, sc); - if (sc->sc_ringalloc.dma_vaddr) - pci_free_consistent(sc->sc_pcidev, - SAFE_MAX_NQUEUE * sizeof (struct safe_ringentry), - sc->sc_ringalloc.dma_vaddr, sc->sc_ringalloc.dma_paddr); - if (sc->sc_spalloc.dma_vaddr) - pci_free_consistent(sc->sc_pcidev, - SAFE_TOTAL_DPART * sizeof (struct safe_pdesc), - sc->sc_spalloc.dma_vaddr, sc->sc_spalloc.dma_paddr); - if (sc->sc_dpalloc.dma_vaddr) - pci_free_consistent(sc->sc_pcidev, - SAFE_TOTAL_DPART * sizeof (struct safe_pdesc), - sc->sc_dpalloc.dma_vaddr, sc->sc_dpalloc.dma_paddr); - kfree(sc); - return(-ENODEV); -} - -static void safe_remove(struct pci_dev *dev) -{ - struct safe_softc *sc = pci_get_drvdata(dev); - - DPRINTF(("%s()\n", __FUNCTION__)); - - /* XXX wait/abort active ops */ - - WRITE_REG(sc, SAFE_HI_MASK, 0); /* disable interrupts */ - - del_timer_sync(&sc->sc_pkto); - - crypto_unregister_all(sc->sc_cid); - - safe_cleanchip(sc); - - if (sc->sc_irq != -1) - free_irq(sc->sc_irq, sc); - if (sc->sc_ringalloc.dma_vaddr) - pci_free_consistent(sc->sc_pcidev, - SAFE_MAX_NQUEUE * sizeof (struct safe_ringentry), - sc->sc_ringalloc.dma_vaddr, sc->sc_ringalloc.dma_paddr); - if (sc->sc_spalloc.dma_vaddr) - pci_free_consistent(sc->sc_pcidev, - SAFE_TOTAL_DPART * sizeof (struct safe_pdesc), - sc->sc_spalloc.dma_vaddr, sc->sc_spalloc.dma_paddr); - if (sc->sc_dpalloc.dma_vaddr) - pci_free_consistent(sc->sc_pcidev, - SAFE_TOTAL_DPART * sizeof (struct safe_pdesc), - sc->sc_dpalloc.dma_vaddr, sc->sc_dpalloc.dma_paddr); - sc->sc_irq = -1; - sc->sc_ringalloc.dma_vaddr = NULL; - sc->sc_spalloc.dma_vaddr = NULL; - sc->sc_dpalloc.dma_vaddr = NULL; -} - -static struct pci_device_id safe_pci_tbl[] = { - { PCI_VENDOR_SAFENET, PCI_PRODUCT_SAFEXCEL, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, }, - { }, -}; -MODULE_DEVICE_TABLE(pci, safe_pci_tbl); - -static struct pci_driver safe_driver = { - .name = "safe", - .id_table = safe_pci_tbl, - .probe = safe_probe, - .remove = safe_remove, - /* add PM stuff here one day */ -}; - -static int __init safe_init (void) -{ - struct safe_softc *sc = NULL; - int rc; - - DPRINTF(("%s(%p)\n", __FUNCTION__, safe_init)); - - rc = pci_register_driver(&safe_driver); - pci_register_driver_compat(&safe_driver, rc); - - return rc; -} - -static void __exit safe_exit (void) -{ - pci_unregister_driver(&safe_driver); -} - -module_init(safe_init); -module_exit(safe_exit); - -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_AUTHOR("David McCullough <david_mccullough@mcafee.com>"); -MODULE_DESCRIPTION("OCF driver for safenet PCI crypto devices"); |