/* $NetBSD: hifn7751.c,v 1.37 2008/04/10 19:13:36 cegger Exp $ */ /* $FreeBSD: hifn7751.c,v 1.5.2.7 2003/10/08 23:52:00 sam Exp $ */ /* $OpenBSD: hifn7751.c,v 1.140 2003/08/01 17:55:54 deraadt Exp $ */ /* * Invertex AEON / Hifn 7751 driver * Copyright (c) 1999 Invertex Inc. All rights reserved. * Copyright (c) 1999 Theo de Raadt * Copyright (c) 2000-2001 Network Security Technologies, Inc. * http://www.netsec.net * Copyright (c) 2003 Hifn Inc. * * This driver is based on a previous driver by Invertex, for which they * requested: Please send any comments, feedback, bug-fixes, or feature * requests to software@invertex.com. * * 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. * * Effort sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F30602-01-2-0537. * */ /* * Driver for various Hifn pre-HIPP encryption processors. */ #include __KERNEL_RCSID(0, "$NetBSD: hifn7751.c,v 1.37 2008/04/10 19:13:36 cegger Exp $"); #include "rnd.h" #if NRND == 0 #error hifn7751 requires rnd pseudo-devices #endif #include #include #include #include #include #include #include #include #include #ifdef __OpenBSD__ #include #include #else #include #include #endif #include #include #include #include #include #undef HIFN_DEBUG #ifdef __NetBSD__ #define M_DUP_PKTHDR M_COPY_PKTHDR /* XXX */ #endif #ifdef HIFN_DEBUG extern int hifn_debug; /* patchable */ int hifn_debug = 1; #endif #ifdef __OpenBSD__ #define HAVE_CRYPTO_LZS /* OpenBSD OCF supports CRYPTO_COMP_LZS */ #endif /* * Prototypes and count for the pci_device structure */ #ifdef __OpenBSD__ static int hifn_probe((struct device *, void *, void *); #else static int hifn_probe(struct device *, struct cfdata *, void *); #endif static void hifn_attach(struct device *, struct device *, void *); CFATTACH_DECL(hifn, sizeof(struct hifn_softc), hifn_probe, hifn_attach, NULL, NULL); #ifdef __OpenBSD__ struct cfdriver hifn_cd = { 0, "hifn", DV_DULL }; #endif static void hifn_reset_board(struct hifn_softc *, int); static void hifn_reset_puc(struct hifn_softc *); static void hifn_puc_wait(struct hifn_softc *); static const char *hifn_enable_crypto(struct hifn_softc *, pcireg_t); static void hifn_set_retry(struct hifn_softc *); static void hifn_init_dma(struct hifn_softc *); static void hifn_init_pci_registers(struct hifn_softc *); static int hifn_sramsize(struct hifn_softc *); static int hifn_dramsize(struct hifn_softc *); static int hifn_ramtype(struct hifn_softc *); static void hifn_sessions(struct hifn_softc *); static int hifn_intr(void *); static u_int hifn_write_command(struct hifn_command *, u_int8_t *); static u_int32_t hifn_next_signature(u_int32_t a, u_int cnt); static int hifn_newsession(void*, u_int32_t *, struct cryptoini *); static int hifn_freesession(void*, u_int64_t); static int hifn_process(void*, struct cryptop *, int); static void hifn_callback(struct hifn_softc *, struct hifn_command *, u_int8_t *); static int hifn_crypto(struct hifn_softc *, struct hifn_command *, struct cryptop*, int); static int hifn_readramaddr(struct hifn_softc *, int, u_int8_t *); static int hifn_writeramaddr(struct hifn_softc *, int, u_int8_t *); static int hifn_dmamap_aligned(bus_dmamap_t); static int hifn_dmamap_load_src(struct hifn_softc *, struct hifn_command *); static int hifn_dmamap_load_dst(struct hifn_softc *, struct hifn_command *); static int hifn_init_pubrng(struct hifn_softc *); static void hifn_rng(void *); static void hifn_tick(void *); static void hifn_abort(struct hifn_softc *); static void hifn_alloc_slot(struct hifn_softc *, int *, int *, int *, int *); static void hifn_write_4(struct hifn_softc *, int, bus_size_t, u_int32_t); static u_int32_t hifn_read_4(struct hifn_softc *, int, bus_size_t); #ifdef HAVE_CRYPTO_LZS static int hifn_compression(struct hifn_softc *, struct cryptop *, struct hifn_command *); static struct mbuf *hifn_mkmbuf_chain(int, struct mbuf *); static int hifn_compress_enter(struct hifn_softc *, struct hifn_command *); static void hifn_callback_comp(struct hifn_softc *, struct hifn_command *, u_int8_t *); #endif /* HAVE_CRYPTO_LZS */ struct hifn_stats hifnstats; static const struct hifn_product { pci_vendor_id_t hifn_vendor; pci_product_id_t hifn_product; int hifn_flags; const char *hifn_name; } hifn_products[] = { { PCI_VENDOR_INVERTEX, PCI_PRODUCT_INVERTEX_AEON, 0, "Invertex AEON", }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7751, 0, "Hifn 7751", }, { PCI_VENDOR_NETSEC, PCI_PRODUCT_NETSEC_7751, 0, "Hifn 7751 (NetSec)" }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7811, HIFN_IS_7811 | HIFN_HAS_RNG | HIFN_HAS_LEDS | HIFN_NO_BURSTWRITE, "Hifn 7811", }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7951, HIFN_HAS_RNG | HIFN_HAS_PUBLIC, "Hifn 7951", }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7955, HIFN_HAS_RNG | HIFN_HAS_PUBLIC | HIFN_IS_7956 | HIFN_HAS_AES, "Hifn 7955", }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7956, HIFN_HAS_RNG | HIFN_HAS_PUBLIC | HIFN_IS_7956 | HIFN_HAS_AES, "Hifn 7956", }, { 0, 0, 0, NULL } }; static const struct hifn_product * hifn_lookup(const struct pci_attach_args *pa) { const struct hifn_product *hp; for (hp = hifn_products; hp->hifn_name != NULL; hp++) { if (PCI_VENDOR(pa->pa_id) == hp->hifn_vendor && PCI_PRODUCT(pa->pa_id) == hp->hifn_product) return (hp); } return (NULL); } static int hifn_probe(struct device *parent, struct cfdata *match, void *aux) { struct pci_attach_args *pa = (struct pci_attach_args *) aux; if (hifn_lookup(pa) != NULL) return (1); return (0); } static void hifn_attach(struct device *parent, struct device *self, void *aux) { struct hifn_softc *sc = (struct hifn_softc *)self; struct pci_attach_args *pa = aux; const struct hifn_product *hp; pci_chipset_tag_t pc = pa->pa_pc; pci_intr_handle_t ih; const char *intrstr = NULL; const char *hifncap; char rbase; bus_size_t iosize0, iosize1; u_int32_t cmd; u_int16_t ena; bus_dma_segment_t seg; bus_dmamap_t dmamap; int rseg; void *kva; hp = hifn_lookup(pa); if (hp == NULL) { printf("\n"); panic("hifn_attach: impossible"); } aprint_naive(": Crypto processor\n"); aprint_normal(": %s, rev. %d\n", hp->hifn_name, PCI_REVISION(pa->pa_class)); sc->sc_pci_pc = pa->pa_pc; sc->sc_pci_tag = pa->pa_tag; sc->sc_flags = hp->hifn_flags; cmd = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); cmd |= PCI_COMMAND_MASTER_ENABLE; pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, cmd); if (pci_mapreg_map(pa, HIFN_BAR0, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_st0, &sc->sc_sh0, NULL, &iosize0)) { aprint_error_dev(&sc->sc_dv, "can't map mem space %d\n", 0); return; } if (pci_mapreg_map(pa, HIFN_BAR1, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_st1, &sc->sc_sh1, NULL, &iosize1)) { aprint_error_dev(&sc->sc_dv, "can't find mem space %d\n", 1); goto fail_io0; } hifn_set_retry(sc); if (sc->sc_flags & HIFN_NO_BURSTWRITE) { sc->sc_waw_lastgroup = -1; sc->sc_waw_lastreg = 1; } sc->sc_dmat = pa->pa_dmat; if (bus_dmamem_alloc(sc->sc_dmat, sizeof(*sc->sc_dma), PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) { aprint_error_dev(&sc->sc_dv, "can't alloc DMA buffer\n"); goto fail_io1; } if (bus_dmamem_map(sc->sc_dmat, &seg, rseg, sizeof(*sc->sc_dma), &kva, BUS_DMA_NOWAIT)) { aprint_error_dev(&sc->sc_dv, "can't map DMA buffers (%lu bytes)\n", (u_long)sizeof(*sc->sc_dma)); bus_dmamem_free(sc->sc_dmat, &seg, rseg); goto fail_io1; } if (bus_dmamap_create(sc->sc_dmat, sizeof(*sc->sc_dma), 1, sizeof(*sc->sc_dma), 0, BUS_DMA_NOWAIT, &dmamap)) { aprint_error_dev(&sc->sc_dv, "can't create DMA map\n"); bus_dmamem_unmap(sc->sc_dmat, kva, sizeof(*sc->sc_dma)); bus_dmamem_free(sc->sc_dmat, &seg, rseg); goto fail_io1; } if (bus_dmamap_load(sc->sc_dmat, dmamap, kva, sizeof(*sc->sc_dma), NULL, BUS_DMA_NOWAIT)) { aprint_error_dev(&sc->sc_dv, "can't load DMA map\n"); bus_dmamap_destroy(sc->sc_dmat, dmamap); bus_dmamem_unmap(sc->sc_dmat, kva, sizeof(*sc->sc_dma)); bus_dmamem_free(sc->sc_dmat, &seg, rseg); goto fail_io1; } sc->sc_dmamap = dmamap; sc->sc_dma = (struct hifn_dma *)kva; bzero(sc->sc_dma, sizeof(*sc->sc_dma)); hifn_reset_board(sc, 0); if ((hifncap = hifn_enable_crypto(sc, pa->pa_id)) == NULL) { aprint_error_dev(&sc->sc_dv, "crypto enabling failed\n"); goto fail_mem; } hifn_reset_puc(sc); hifn_init_dma(sc); hifn_init_pci_registers(sc); /* XXX can't dynamically determine ram type for 795x; force dram */ if (sc->sc_flags & HIFN_IS_7956) sc->sc_drammodel = 1; else if (hifn_ramtype(sc)) goto fail_mem; if (sc->sc_drammodel == 0) hifn_sramsize(sc); else hifn_dramsize(sc); /* * Workaround for NetSec 7751 rev A: half ram size because two * of the address lines were left floating */ if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NETSEC && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NETSEC_7751 && PCI_REVISION(pa->pa_class) == 0x61) sc->sc_ramsize >>= 1; if (pci_intr_map(pa, &ih)) { aprint_error_dev(&sc->sc_dv, "couldn't map interrupt\n"); goto fail_mem; } intrstr = pci_intr_string(pc, ih); #ifdef __OpenBSD__ sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, hifn_intr, sc, self->dv_xname); #else sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, hifn_intr, sc); #endif if (sc->sc_ih == NULL) { aprint_error_dev(&sc->sc_dv, "couldn't establish interrupt\n"); if (intrstr != NULL) aprint_normal(" at %s", intrstr); aprint_normal("\n"); goto fail_mem; } hifn_sessions(sc); rseg = sc->sc_ramsize / 1024; rbase = 'K'; if (sc->sc_ramsize >= (1024 * 1024)) { rbase = 'M'; rseg /= 1024; } aprint_normal_dev(&sc->sc_dv, "%s, %d%cB %cram, interrupting at %s\n", hifncap, rseg, rbase, sc->sc_drammodel ? 'd' : 's', intrstr); sc->sc_cid = crypto_get_driverid(0); if (sc->sc_cid < 0) { aprint_error_dev(&sc->sc_dv, "couldn't get crypto driver id\n"); goto fail_intr; } WRITE_REG_0(sc, HIFN_0_PUCNFG, READ_REG_0(sc, HIFN_0_PUCNFG) | HIFN_PUCNFG_CHIPID); ena = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA; switch (ena) { case HIFN_PUSTAT_ENA_2: crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); crypto_register(sc->sc_cid, CRYPTO_ARC4, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); if (sc->sc_flags & HIFN_HAS_AES) crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); /*FALLTHROUGH*/ case HIFN_PUSTAT_ENA_1: crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC_96, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC_96, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0, hifn_newsession, hifn_freesession, hifn_process, sc); break; } bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0, sc->sc_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); if (sc->sc_flags & (HIFN_HAS_PUBLIC | HIFN_HAS_RNG)) hifn_init_pubrng(sc); #ifdef __OpenBSD__ timeout_set(&sc->sc_tickto, hifn_tick, sc); timeout_add(&sc->sc_tickto, hz); #else callout_init(&sc->sc_tickto, 0); callout_reset(&sc->sc_tickto, hz, hifn_tick, sc); #endif return; fail_intr: pci_intr_disestablish(pc, sc->sc_ih); fail_mem: bus_dmamap_unload(sc->sc_dmat, dmamap); bus_dmamap_destroy(sc->sc_dmat, dmamap); bus_dmamem_unmap(sc->sc_dmat, kva, sizeof(*sc->sc_dma)); bus_dmamem_free(sc->sc_dmat, &seg, rseg); /* Turn off DMA polling */ WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE); fail_io1: bus_space_unmap(sc->sc_st1, sc->sc_sh1, iosize1); fail_io0: bus_space_unmap(sc->sc_st0, sc->sc_sh0, iosize0); } static int hifn_init_pubrng(struct hifn_softc *sc) { u_int32_t r; int i; if ((sc->sc_flags & HIFN_IS_7811) == 0) { /* Reset 7951 public key/rng engine */ WRITE_REG_1(sc, HIFN_1_PUB_RESET, READ_REG_1(sc, HIFN_1_PUB_RESET) | HIFN_PUBRST_RESET); for (i = 0; i < 100; i++) { DELAY(1000); if ((READ_REG_1(sc, HIFN_1_PUB_RESET) & HIFN_PUBRST_RESET) == 0) break; } if (i == 100) { printf("%s: public key init failed\n", device_xname(&sc->sc_dv)); return (1); } } /* Enable the rng, if available */ if (sc->sc_flags & HIFN_HAS_RNG) { if (sc->sc_flags & HIFN_IS_7811) { r = READ_REG_1(sc, HIFN_1_7811_RNGENA); if (r & HIFN_7811_RNGENA_ENA) { r &= ~HIFN_7811_RNGENA_ENA; WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r); } WRITE_REG_1(sc, HIFN_1_7811_RNGCFG, HIFN_7811_RNGCFG_DEFL); r |= HIFN_7811_RNGENA_ENA; WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r); } else WRITE_REG_1(sc, HIFN_1_RNG_CONFIG, READ_REG_1(sc, HIFN_1_RNG_CONFIG) | HIFN_RNGCFG_ENA); /* * The Hifn RNG documentation states that at their * recommended "conservative" RNG config values, * the RNG must warm up for 0.4s before providing * data that meet their worst-case estimate of 0.06 * bits of random data per output register bit. */ DELAY(4000); #ifdef __NetBSD__ /* * XXX Careful! The use of RND_FLAG_NO_ESTIMATE * XXX here is unobvious: we later feed raw bits * XXX into the "entropy pool" with rnd_add_data, * XXX explicitly supplying an entropy estimate. * XXX In this context, NO_ESTIMATE serves only * XXX to prevent rnd_add_data from trying to * XXX use the *time at which we added the data* * XXX as entropy, which is not a good idea since * XXX we add data periodically from a callout. */ rnd_attach_source(&sc->sc_rnd_source, device_xname(&sc->sc_dv), RND_TYPE_RNG, RND_FLAG_NO_ESTIMATE); #endif sc->sc_rngfirst = 1; if (hz >= 100) sc->sc_rnghz = hz / 100; else sc->sc_rnghz = 1; #ifdef __OpenBSD__ timeout_set(&sc->sc_rngto, hifn_rng, sc); #else /* !__OpenBSD__ */ callout_init(&sc->sc_rngto, 0); #endif /* !__OpenBSD__ */ } /* Enable public key engine, if available */ if (sc->sc_flags & HIFN_HAS_PUBLIC) { WRITE_REG_1(sc, HIFN_1_PUB_IEN, HIFN_PUBIEN_DONE); sc->sc_dmaier |= HIFN_DMAIER_PUBDONE; WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier); } /* Call directly into the RNG once to prime the pool. */ hifn_rng(sc); /* Sets callout/timeout at end */ return (0); } static void hifn_rng(void *vsc) { struct hifn_softc *sc = vsc; #ifdef __NetBSD__ u_int32_t num[HIFN_RNG_BITSPER * RND_ENTROPY_THRESHOLD]; #else u_int32_t num[2]; #endif u_int32_t sts; int i; if (sc->sc_flags & HIFN_IS_7811) { for (i = 0; i < 5; i++) { /* XXX why 5? */ sts = READ_REG_1(sc, HIFN_1_7811_RNGSTS); if (sts & HIFN_7811_RNGSTS_UFL) { printf("%s: RNG underflow: disabling\n", device_xname(&sc->sc_dv)); return; } if ((sts & HIFN_7811_RNGSTS_RDY) == 0) break; /* * There are at least two words in the RNG FIFO * at this point. */ num[0] = READ_REG_1(sc, HIFN_1_7811_RNGDAT); num[1] = READ_REG_1(sc, HIFN_1_7811_RNGDAT); if (sc->sc_rngfirst) sc->sc_rngfirst = 0; #ifdef __NetBSD__ rnd_add_data(&sc->sc_rnd_source, num, 2 * sizeof(num[0]), (2 * sizeof(num[0]) * NBBY) / HIFN_RNG_BITSPER); #else /* * XXX This is a really bad idea. * XXX Hifn estimate as little as 0.06 * XXX actual bits of entropy per output * XXX register bit. How can we tell the * XXX kernel RNG subsystem we're handing * XXX it 64 "true" random bits, for any * XXX sane value of "true"? * XXX * XXX The right thing to do here, if we * XXX cannot supply an estimate ourselves, * XXX would be to hash the bits locally. */ add_true_randomness(num[0]); add_true_randomness(num[1]); #endif } } else { #ifdef __NetBSD__ /* First time through, try to help fill the pool. */ int nwords = sc->sc_rngfirst ? sizeof(num) / sizeof(num[0]) : 4; #else int nwords = 2; #endif /* * We must be *extremely* careful here. The Hifn * 795x differ from the published 6500 RNG design * in more ways than the obvious lack of the output * FIFO and LFSR control registers. In fact, there * is only one LFSR, instead of the 6500's two, and * it's 32 bits, not 31. * * Further, a block diagram obtained from Hifn shows * a very curious latching of this register: the LFSR * rotates at a frequency of RNG_Clk / 8, but the * RNG_Data register is latched at a frequency of * RNG_Clk, which means that it is possible for * consecutive reads of the RNG_Data register to read * identical state from the LFSR. The simplest * workaround seems to be to read eight samples from * the register for each one that we use. Since each * read must require at least one PCI cycle, and * RNG_Clk is at least PCI_Clk, this is safe. */ if (sc->sc_rngfirst) { sc->sc_rngfirst = 0; } for(i = 0 ; i < nwords * 8; i++) { volatile u_int32_t regtmp; regtmp = READ_REG_1(sc, HIFN_1_RNG_DATA); num[i / 8] = regtmp; } #ifdef __NetBSD__ rnd_add_data(&sc->sc_rnd_source, num, nwords * sizeof(num[0]), (nwords * sizeof(num[0]) * NBBY) / HIFN_RNG_BITSPER); #else /* XXX a bad idea; see 7811 block above */ add_true_randomness(num[0]); #endif } #ifdef __OpenBSD__ timeout_add(&sc->sc_rngto, sc->sc_rnghz); #else callout_reset(&sc->sc_rngto, sc->sc_rnghz, hifn_rng, sc); #endif } static void hifn_puc_wait(struct hifn_softc *sc) { int i; for (i = 5000; i > 0; i--) { DELAY(1); if (!(READ_REG_0(sc, HIFN_0_PUCTRL) & HIFN_PUCTRL_RESET)) break; } if (!i) printf("%s: proc unit did not reset\n", device_xname(&sc->sc_dv)); } /* * Reset the processing unit. */ static void hifn_reset_puc(struct hifn_softc *sc) { /* Reset processing unit */ WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA); hifn_puc_wait(sc); } static void hifn_set_retry(struct hifn_softc *sc) { u_int32_t r; r = pci_conf_read(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_TRDY_TIMEOUT); r &= 0xffff0000; pci_conf_write(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_TRDY_TIMEOUT, r); } /* * Resets the board. Values in the regesters are left as is * from the reset (i.e. initial values are assigned elsewhere). */ static void hifn_reset_board(struct hifn_softc *sc, int full) { u_int32_t reg; /* * Set polling in the DMA configuration register to zero. 0x7 avoids * resetting the board and zeros out the other fields. */ WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE); /* * Now that polling has been disabled, we have to wait 1 ms * before resetting the board. */ DELAY(1000); /* Reset the DMA unit */ if (full) { WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE); DELAY(1000); } else { WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE | HIFN_DMACNFG_MSTRESET); hifn_reset_puc(sc); } bzero(sc->sc_dma, sizeof(*sc->sc_dma)); /* Bring dma unit out of reset */ WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE); hifn_puc_wait(sc); hifn_set_retry(sc); if (sc->sc_flags & HIFN_IS_7811) { for (reg = 0; reg < 1000; reg++) { if (READ_REG_1(sc, HIFN_1_7811_MIPSRST) & HIFN_MIPSRST_CRAMINIT) break; DELAY(1000); } if (reg == 1000) printf(": cram init timeout\n"); } } static u_int32_t hifn_next_signature(u_int32_t a, u_int cnt) { int i; u_int32_t v; for (i = 0; i < cnt; i++) { /* get the parity */ v = a & 0x80080125; v ^= v >> 16; v ^= v >> 8; v ^= v >> 4; v ^= v >> 2; v ^= v >> 1; a = (v & 1) ^ (a << 1); } return a; } static struct pci2id { u_short pci_vendor; u_short pci_prod; char card_id[13]; } const pci2id[] = { { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7951, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7955, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7956, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, { PCI_VENDOR_NETSEC, PCI_PRODUCT_NETSEC_7751, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, { PCI_VENDOR_INVERTEX, PCI_PRODUCT_INVERTEX_AEON, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7811, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, { /* * Other vendors share this PCI ID as well, such as * http://www.powercrypt.com, and obviously they also * use the same key. */ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7751, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, }; /* * Checks to see if crypto is already enabled. If crypto isn't enable, * "hifn_enable_crypto" is called to enable it. The check is important, * as enabling crypto twice will lock the board. */ static const char * hifn_enable_crypto(struct hifn_softc *sc, pcireg_t pciid) { u_int32_t dmacfg, ramcfg, encl, addr, i; const char *offtbl = NULL; for (i = 0; i < sizeof(pci2id)/sizeof(pci2id[0]); i++) { if (pci2id[i].pci_vendor == PCI_VENDOR(pciid) && pci2id[i].pci_prod == PCI_PRODUCT(pciid)) { offtbl = pci2id[i].card_id; break; } } if (offtbl == NULL) { #ifdef HIFN_DEBUG aprint_debug_dev(&sc->sc_dv, "Unknown card!\n"); #endif return (NULL); } ramcfg = READ_REG_0(sc, HIFN_0_PUCNFG); dmacfg = READ_REG_1(sc, HIFN_1_DMA_CNFG); /* * The RAM config register's encrypt level bit needs to be set before * every read performed on the encryption level register. */ WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID); encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA; /* * Make sure we don't re-unlock. Two unlocks kills chip until the * next reboot. */ if (encl == HIFN_PUSTAT_ENA_1 || encl == HIFN_PUSTAT_ENA_2) { #ifdef HIFN_DEBUG aprint_debug_dev(&sc->sc_dv, "Strong Crypto already enabled!\n"); #endif goto report; } if (encl != 0 && encl != HIFN_PUSTAT_ENA_0) { #ifdef HIFN_DEBUG aprint_debug_dev(&sc->sc_dv, "Unknown encryption level\n"); #endif return (NULL); } WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_UNLOCK | HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE); DELAY(1000); addr = READ_REG_1(sc, HIFN_1_UNLOCK_SECRET1); DELAY(1000); WRITE_REG_1(sc, HIFN_1_UNLOCK_SECRET2, 0); DELAY(1000); for (i = 0; i <= 12; i++) { addr = hifn_next_signature(addr, offtbl[i] + 0x101); WRITE_REG_1(sc, HIFN_1_UNLOCK_SECRET2, addr); DELAY(1000); } WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID); encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA; #ifdef HIFN_DEBUG if (encl != HIFN_PUSTAT_ENA_1 && encl != HIFN_PUSTAT_ENA_2) aprint_debug("Encryption engine is permanently locked until next system reset."); else aprint_debug("Encryption engine enabled successfully!"); #endif report: WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg); WRITE_REG_1(sc, HIFN_1_DMA_CNFG, dmacfg); switch (encl) { case HIFN_PUSTAT_ENA_0: return ("LZS-only (no encr/auth)"); case HIFN_PUSTAT_ENA_1: return ("DES"); case HIFN_PUSTAT_ENA_2: if (sc->sc_flags & HIFN_HAS_AES) return ("3DES/AES"); else return ("3DES"); default: return ("disabled"); } /* NOTREACHED */ } /* * Give initial values to the registers listed in the "Register Space" * section of the HIFN Software Development reference manual. */ static void hifn_init_pci_registers(struct hifn_softc *sc) { /* write fixed values needed by the Initialization registers */ WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA); WRITE_REG_0(sc, HIFN_0_FIFOCNFG, HIFN_FIFOCNFG_THRESHOLD); WRITE_REG_0(sc, HIFN_0_PUIER, HIFN_PUIER_DSTOVER); /* write all 4 ring address registers */ WRITE_REG_1(sc, HIFN_1_DMA_CRAR, sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, cmdr[0])); WRITE_REG_1(sc, HIFN_1_DMA_SRAR, sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, srcr[0])); WRITE_REG_1(sc, HIFN_1_DMA_DRAR, sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, dstr[0])); WRITE_REG_1(sc, HIFN_1_DMA_RRAR, sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, resr[0])); DELAY(2000); /* write status register */ WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_D_ABORT | HIFN_DMACSR_D_DONE | HIFN_DMACSR_D_LAST | HIFN_DMACSR_D_WAIT | HIFN_DMACSR_D_OVER | HIFN_DMACSR_R_ABORT | HIFN_DMACSR_R_DONE | HIFN_DMACSR_R_LAST | HIFN_DMACSR_R_WAIT | HIFN_DMACSR_R_OVER | HIFN_DMACSR_S_ABORT | HIFN_DMACSR_S_DONE | HIFN_DMACSR_S_LAST | HIFN_DMACSR_S_WAIT | HIFN_DMACSR_C_ABORT | HIFN_DMACSR_C_DONE | HIFN_DMACSR_C_LAST | HIFN_DMACSR_C_WAIT | HIFN_DMACSR_ENGINE | ((sc->sc_flags & HIFN_HAS_PUBLIC) ? HIFN_DMACSR_PUBDONE : 0) | ((sc->sc_flags & HIFN_IS_7811) ? HIFN_DMACSR_ILLW | HIFN_DMACSR_ILLR : 0)); sc->sc_d_busy = sc->sc_r_busy = sc->sc_s_busy = sc->sc_c_busy = 0; sc->sc_dmaier |= HIFN_DMAIER_R_DONE | HIFN_DMAIER_C_ABORT | HIFN_DMAIER_D_OVER | HIFN_DMAIER_R_OVER | HIFN_DMAIER_S_ABORT | HIFN_DMAIER_D_ABORT | HIFN_DMAIER_R_ABORT | HIFN_DMAIER_ENGINE | ((sc->sc_flags & HIFN_IS_7811) ? HIFN_DMAIER_ILLW | HIFN_DMAIER_ILLR : 0); sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT; WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier); CLR_LED(sc, HIFN_MIPSRST_LED0 | HIFN_MIPSRST_LED1 | HIFN_MIPSRST_LED2); if (sc->sc_flags & HIFN_IS_7956) { WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING | HIFN_PUCNFG_TCALLPHASES | HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32); WRITE_REG_1(sc, HIFN_1_PLL, HIFN_PLL_7956); } else { WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING | HIFN_PUCNFG_DRFR_128 | HIFN_PUCNFG_TCALLPHASES | HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32 | (sc->sc_drammodel ? HIFN_PUCNFG_DRAM : HIFN_PUCNFG_SRAM)); } WRITE_REG_0(sc, HIFN_0_PUISR, HIFN_PUISR_DSTOVER); WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE | HIFN_DMACNFG_LAST | ((HIFN_POLL_FREQUENCY << 16 ) & HIFN_DMACNFG_POLLFREQ) | ((HIFN_POLL_SCALAR << 8) & HIFN_DMACNFG_POLLINVAL)); } /* * The maximum number of sessions supported by the card * is dependent on the amount of context ram, which * encryption algorithms are enabled, and how compression * is configured. This should be configured before this * routine is called. */ static void hifn_sessions(struct hifn_softc *sc) { u_int32_t pucnfg; int ctxsize; pucnfg = READ_REG_0(sc, HIFN_0_PUCNFG); if (pucnfg & HIFN_PUCNFG_COMPSING) { if (pucnfg & HIFN_PUCNFG_ENCCNFG) ctxsize = 128; else ctxsize = 512; /* * 7955/7956 has internal context memory of 32K */ if (sc->sc_flags & HIFN_IS_7956) sc->sc_maxses = 32768 / ctxsize; else sc->sc_maxses = 1 + ((sc->sc_ramsize - 32768) / ctxsize); } else sc->sc_maxses = sc->sc_ramsize / 16384; if (sc->sc_maxses > 2048) sc->sc_maxses = 2048; } /* * Determine ram type (sram or dram). Board should be just out of a reset * state when this is called. */ static int hifn_ramtype(struct hifn_softc *sc) { u_int8_t data[8], dataexpect[8]; int i; for (i = 0; i < sizeof(data); i++) data[i] = dataexpect[i] = 0x55; if (hifn_writeramaddr(sc, 0, data)) return (-1); if (hifn_readramaddr(sc, 0, data)) return (-1); if (bcmp(data, dataexpect, sizeof(data)) != 0) { sc->sc_drammodel = 1; return (0); } for (i = 0; i < sizeof(data); i++) data[i] = dataexpect[i] = 0xaa; if (hifn_writeramaddr(sc, 0, data)) return (-1); if (hifn_readramaddr(sc, 0, data)) return (-1); if (bcmp(data, dataexpect, sizeof(data)) != 0) { sc->sc_drammodel = 1; return (0); } return (0); } #define HIFN_SRAM_MAX (32 << 20) #define HIFN_SRAM_STEP_SIZE 16384 #define HIFN_SRAM_GRANULARITY (HIFN_SRAM_MAX / HIFN_SRAM_STEP_SIZE) static int hifn_sramsize(struct hifn_softc *sc) { u_int32_t a; u_int8_t data[8]; u_int8_t dataexpect[sizeof(data)]; int32_t i; for (i = 0; i < sizeof(data); i++) data[i] = dataexpect[i] = i ^ 0x5a; for (i = HIFN_SRAM_GRANULARITY - 1; i >= 0; i--) { a = i * HIFN_SRAM_STEP_SIZE; bcopy(&i, data, sizeof(i)); hifn_writeramaddr(sc, a, data); } for (i = 0; i < HIFN_SRAM_GRANULARITY; i++) { a = i * HIFN_SRAM_STEP_SIZE; bcopy(&i, dataexpect, sizeof(i)); if (hifn_readramaddr(sc, a, data) < 0) return (0); if (bcmp(data, dataexpect, sizeof(data)) != 0) return (0); sc->sc_ramsize = a + HIFN_SRAM_STEP_SIZE; } return (0); } /* * XXX For dram boards, one should really try all of the * HIFN_PUCNFG_DSZ_*'s. This just assumes that PUCNFG * is already set up correctly. */ static int hifn_dramsize(struct hifn_softc *sc) { u_int32_t cnfg; if (sc->sc_flags & HIFN_IS_7956) { /* * 7955/7956 have a fixed internal ram of only 32K. */ sc->sc_ramsize = 32768; } else { cnfg = READ_REG_0(sc, HIFN_0_PUCNFG) & HIFN_PUCNFG_DRAMMASK; sc->sc_ramsize = 1 << ((cnfg >> 13) + 18); } return (0); } static void hifn_alloc_slot(struct hifn_softc *sc, int *cmdp, int *srcp, int *dstp, int *resp) { struct hifn_dma *dma = sc->sc_dma; if (dma->cmdi == HIFN_D_CMD_RSIZE) { dma->cmdi = 0; dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } *cmdp = dma->cmdi++; dma->cmdk = dma->cmdi; if (dma->srci == HIFN_D_SRC_RSIZE) { dma->srci = 0; dma->srcr[HIFN_D_SRC_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } *srcp = dma->srci++; dma->srck = dma->srci; if (dma->dsti == HIFN_D_DST_RSIZE) { dma->dsti = 0; dma->dstr[HIFN_D_DST_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_DSTR_SYNC(sc, HIFN_D_DST_RSIZE, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } *dstp = dma->dsti++; dma->dstk = dma->dsti; if (dma->resi == HIFN_D_RES_RSIZE) { dma->resi = 0; dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } *resp = dma->resi++; dma->resk = dma->resi; } static int hifn_writeramaddr(struct hifn_softc *sc, int addr, u_int8_t *data) { struct hifn_dma *dma = sc->sc_dma; struct hifn_base_command wc; const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ; int r, cmdi, resi, srci, dsti; wc.masks = htole16(3 << 13); wc.session_num = htole16(addr >> 14); wc.total_source_count = htole16(8); wc.total_dest_count = htole16(addr & 0x3fff); hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi); WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA | HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA); /* build write command */ bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND); *(struct hifn_base_command *)dma->command_bufs[cmdi] = wc; bcopy(data, &dma->test_src, sizeof(dma->test_src)); dma->srcr[srci].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, test_src)); dma->dstr[dsti].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, test_dst)); dma->cmdr[cmdi].l = htole32(16 | masks); dma->srcr[srci].l = htole32(8 | masks); dma->dstr[dsti].l = htole32(4 | masks); dma->resr[resi].l = htole32(4 | masks); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0, sc->sc_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); for (r = 10000; r >= 0; r--) { DELAY(10); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0, sc->sc_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0) break; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0, sc->sc_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } if (r == 0) { printf("%s: writeramaddr -- " "result[%d](addr %d) still valid\n", device_xname(&sc->sc_dv), resi, addr); r = -1; return (-1); } else r = 0; WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS); return (r); } static int hifn_readramaddr(struct hifn_softc *sc, int addr, u_int8_t *data) { struct hifn_dma *dma = sc->sc_dma; struct hifn_base_command rc; const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ; int r, cmdi, srci, dsti, resi; rc.masks = htole16(2 << 13); rc.session_num = htole16(addr >> 14); rc.total_source_count = htole16(addr & 0x3fff); rc.total_dest_count = htole16(8); hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi); WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA | HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA); bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND); *(struct hifn_base_command *)dma->command_bufs[cmdi] = rc; dma->srcr[srci].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, test_src)); dma->test_src = 0; dma->dstr[dsti].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, test_dst)); dma->test_dst = 0; dma->cmdr[cmdi].l = htole32(8 | masks); dma->srcr[srci].l = htole32(8 | masks); dma->dstr[dsti].l = htole32(8 | masks); dma->resr[resi].l = htole32(HIFN_MAX_RESULT | masks); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0, sc->sc_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); for (r = 10000; r >= 0; r--) { DELAY(10); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0, sc->sc_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0) break; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0, sc->sc_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } if (r == 0) { printf("%s: readramaddr -- " "result[%d](addr %d) still valid\n", device_xname(&sc->sc_dv), resi, addr); r = -1; } else { r = 0; bcopy(&dma->test_dst, data, sizeof(dma->test_dst)); } WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS); return (r); } /* * Initialize the descriptor rings. */ static void hifn_init_dma(struct hifn_softc *sc) { struct hifn_dma *dma = sc->sc_dma; int i; hifn_set_retry(sc); /* initialize static pointer values */ for (i = 0; i < HIFN_D_CMD_RSIZE; i++) dma->cmdr[i].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, command_bufs[i][0])); for (i = 0; i < HIFN_D_RES_RSIZE; i++) dma->resr[i].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, result_bufs[i][0])); dma->cmdr[HIFN_D_CMD_RSIZE].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, cmdr[0])); dma->srcr[HIFN_D_SRC_RSIZE].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, srcr[0])); dma->dstr[HIFN_D_DST_RSIZE].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, dstr[0])); dma->resr[HIFN_D_RES_RSIZE].p = htole32(sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, resr[0])); dma->cmdu = dma->srcu = dma->dstu = dma->resu = 0; dma->cmdi = dma->srci = dma->dsti = dma->resi = 0; dma->cmdk = dma->srck = dma->dstk = dma->resk = 0; } /* * Writes out the raw command buffer space. Returns the * command buffer size. */ static u_int hifn_write_command(struct hifn_command *cmd, u_int8_t *buf) { u_int8_t *buf_pos; struct hifn_base_command *base_cmd; struct hifn_mac_command *mac_cmd; struct hifn_crypt_command *cry_cmd; struct hifn_comp_command *comp_cmd; int using_mac, using_crypt, using_comp, len, ivlen; u_int32_t dlen, slen; buf_pos = buf; using_mac = cmd->base_masks & HIFN_BASE_CMD_MAC; using_crypt = cmd->base_masks & HIFN_BASE_CMD_CRYPT; using_comp = cmd->base_masks & HIFN_BASE_CMD_COMP; base_cmd = (struct hifn_base_command *)buf_pos; base_cmd->masks = htole16(cmd->base_masks); slen = cmd->src_map->dm_mapsize; if (cmd->sloplen) dlen = cmd->dst_map->dm_mapsize - cmd->sloplen + sizeof(u_int32_t); else dlen = cmd->dst_map->dm_mapsize; base_cmd->total_source_count = htole16(slen & HIFN_BASE_CMD_LENMASK_LO); base_cmd->total_dest_count = htole16(dlen & HIFN_BASE_CMD_LENMASK_LO); dlen >>= 16; slen >>= 16; base_cmd->session_num = htole16(cmd->session_num | ((slen << HIFN_BASE_CMD_SRCLEN_S) & HIFN_BASE_CMD_SRCLEN_M) | ((dlen << HIFN_BASE_CMD_DSTLEN_S) & HIFN_BASE_CMD_DSTLEN_M)); buf_pos += sizeof(struct hifn_base_command); if (using_comp) { comp_cmd = (struct hifn_comp_command *)buf_pos; dlen = cmd->compcrd->crd_len; comp_cmd->source_count = htole16(dlen & 0xffff); dlen >>= 16; comp_cmd->masks = htole16(cmd->comp_masks | ((dlen << HIFN_COMP_CMD_SRCLEN_S) & HIFN_COMP_CMD_SRCLEN_M)); comp_cmd->header_skip = htole16(cmd->compcrd->crd_skip); comp_cmd->reserved = 0; buf_pos += sizeof(struct hifn_comp_command); } if (using_mac) { mac_cmd = (struct hifn_mac_command *)buf_pos; dlen = cmd->maccrd->crd_len; mac_cmd->source_count = htole16(dlen & 0xffff); dlen >>= 16; mac_cmd->masks = htole16(cmd->mac_masks | ((dlen << HIFN_MAC_CMD_SRCLEN_S) & HIFN_MAC_CMD_SRCLEN_M)); mac_cmd->header_skip = htole16(cmd->maccrd->crd_skip); mac_cmd->reserved = 0; buf_pos += sizeof(struct hifn_mac_command); } if (using_crypt) { cry_cmd = (struct hifn_crypt_command *)buf_pos; dlen = cmd->enccrd->crd_len; cry_cmd->source_count = htole16(dlen & 0xffff); dlen >>= 16; cry_cmd->masks = htole16(cmd->cry_masks | ((dlen << HIFN_CRYPT_CMD_SRCLEN_S) & HIFN_CRYPT_CMD_SRCLEN_M)); cry_cmd->header_skip = htole16(cmd->enccrd->crd_skip); cry_cmd->reserved = 0; buf_pos += sizeof(struct hifn_crypt_command); } if (using_mac && cmd->mac_masks & HIFN_MAC_CMD_NEW_KEY) { bcopy(cmd->mac, buf_pos, HIFN_MAC_KEY_LENGTH); buf_pos += HIFN_MAC_KEY_LENGTH; } if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_KEY) { switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) { case HIFN_CRYPT_CMD_ALG_3DES: bcopy(cmd->ck, buf_pos, HIFN_3DES_KEY_LENGTH); buf_pos += HIFN_3DES_KEY_LENGTH; break; case HIFN_CRYPT_CMD_ALG_DES: bcopy(cmd->ck, buf_pos, HIFN_DES_KEY_LENGTH); buf_pos += HIFN_DES_KEY_LENGTH; break; case HIFN_CRYPT_CMD_ALG_RC4: len = 256; do { int clen; clen = MIN(cmd->cklen, len); bcopy(cmd->ck, buf_pos, clen); len -= clen; buf_pos += clen; } while (len > 0); bzero(buf_pos, 4); buf_pos += 4; break; case HIFN_CRYPT_CMD_ALG_AES: /* * AES keys are variable 128, 192 and * 256 bits (16, 24 and 32 bytes). */ bcopy(cmd->ck, buf_pos, cmd->cklen); buf_pos += cmd->cklen; break; } } if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_IV) { switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) { case HIFN_CRYPT_CMD_ALG_AES: ivlen = HIFN_AES_IV_LENGTH; break; default: ivlen = HIFN_IV_LENGTH; break; } bcopy(cmd->iv, buf_pos, ivlen); buf_pos += ivlen; } if ((cmd->base_masks & (HIFN_BASE_CMD_MAC | HIFN_BASE_CMD_CRYPT | HIFN_BASE_CMD_COMP)) == 0) { bzero(buf_pos, 8); buf_pos += 8; } return (buf_pos - buf); } static int hifn_dmamap_aligned(bus_dmamap_t map) { int i; for (i = 0; i < map->dm_nsegs; i++) { if (map->dm_segs[i].ds_addr & 3) return (0); if ((i != (map->dm_nsegs - 1)) && (map->dm_segs[i].ds_len & 3)) return (0); } return (1); } static int hifn_dmamap_load_dst(struct hifn_softc *sc, struct hifn_command *cmd) { struct hifn_dma *dma = sc->sc_dma; bus_dmamap_t map = cmd->dst_map; u_int32_t p, l; int idx, used = 0, i; idx = dma->dsti; for (i = 0; i < map->dm_nsegs - 1; i++) { dma->dstr[idx].p = htole32(map->dm_segs[i].ds_addr); dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_MASKDONEIRQ | map->dm_segs[i].ds_len); HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); used++; if (++idx == HIFN_D_DST_RSIZE) { dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); idx = 0; } } if (cmd->sloplen == 0) { p = map->dm_segs[i].ds_addr; l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST | map->dm_segs[i].ds_len; } else { p = sc->sc_dmamap->dm_segs[0].ds_addr + offsetof(struct hifn_dma, slop[cmd->slopidx]); l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST | sizeof(u_int32_t); if ((map->dm_segs[i].ds_len - cmd->sloplen) != 0) { dma->dstr[idx].p = htole32(map->dm_segs[i].ds_addr); dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_MASKDONEIRQ | (map->dm_segs[i].ds_len - cmd->sloplen)); HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); used++; if (++idx == HIFN_D_DST_RSIZE) { dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); idx = 0; } } } dma->dstr[idx].p = htole32(p); dma->dstr[idx].l = htole32(l); HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); used++; if (++idx == HIFN_D_DST_RSIZE) { dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); idx = 0; } dma->dsti = idx; dma->dstu += used; return (idx); } static int hifn_dmamap_load_src(struct hifn_softc *sc, struct hifn_command *cmd) { struct hifn_dma *dma = sc->sc_dma; bus_dmamap_t map = cmd->src_map; int idx, i; u_int32_t last = 0; idx = dma->srci; for (i = 0; i < map->dm_nsegs; i++) { if (i == map->dm_nsegs - 1) last = HIFN_D_LAST; dma->srcr[idx].p = htole32(map->dm_segs[i].ds_addr); dma->srcr[idx].l = htole32(map->dm_segs[i].ds_len | HIFN_D_VALID | HIFN_D_MASKDONEIRQ | last); HIFN_SRCR_SYNC(sc, idx, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); if (++idx == HIFN_D_SRC_RSIZE) { dma->srcr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); idx = 0; } } dma->srci = idx; dma->srcu += map->dm_nsegs; return (idx); } static int hifn_crypto(struct hifn_softc *sc, struct hifn_command *cmd, struct cryptop *crp, int hint) { struct hifn_dma *dma = sc->sc_dma; u_int32_t cmdlen; int cmdi, resi, s, err = 0; if (bus_dmamap_create(sc->sc_dmat, HIFN_MAX_DMALEN, MAX_SCATTER, HIFN_MAX_SEGLEN, 0, BUS_DMA_NOWAIT, &cmd->src_map)) return (ENOMEM); if (crp->crp_flags & CRYPTO_F_IMBUF) { if (bus_dmamap_load_mbuf(sc->sc_dmat, cmd->src_map, cmd->srcu.src_m, BUS_DMA_NOWAIT)) { err = ENOMEM; goto err_srcmap1; } } else if (crp->crp_flags & CRYPTO_F_IOV) { if (bus_dmamap_load_uio(sc->sc_dmat, cmd->src_map, cmd->srcu.src_io, BUS_DMA_NOWAIT)) { err = ENOMEM; goto err_srcmap1; } } else { err = EINVAL; goto err_srcmap1; } if (hifn_dmamap_aligned(cmd->src_map)) { cmd->sloplen = cmd->src_map->dm_mapsize & 3; if (crp->crp_flags & CRYPTO_F_IOV) cmd->dstu.dst_io = cmd->srcu.src_io; else if (crp->crp_flags & CRYPTO_F_IMBUF) cmd->dstu.dst_m = cmd->srcu.src_m; cmd->dst_map = cmd->src_map; } else { if (crp->crp_flags & CRYPTO_F_IOV) { err = EINVAL; goto err_srcmap; } else if (crp->crp_flags & CRYPTO_F_IMBUF) { int totlen, len; struct mbuf *m, *m0, *mlast; totlen = cmd->src_map->dm_mapsize; if (cmd->srcu.src_m->m_flags & M_PKTHDR) { len = MHLEN; MGETHDR(m0, M_DONTWAIT, MT_DATA); } else { len = MLEN; MGET(m0, M_DONTWAIT, MT_DATA); } if (m0 == NULL) { err = ENOMEM; goto err_srcmap; } if (len == MHLEN) M_DUP_PKTHDR(m0, cmd->srcu.src_m); if (totlen >= MINCLSIZE) { MCLGET(m0, M_DONTWAIT); if (m0->m_flags & M_EXT) len = MCLBYTES; } totlen -= len; m0->m_pkthdr.len = m0->m_len = len; mlast = m0; while (totlen > 0) { MGET(m, M_DONTWAIT, MT_DATA); if (m == NULL) { err = ENOMEM; m_freem(m0); goto err_srcmap; } len = MLEN; if (totlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (m->m_flags & M_EXT) len = MCLBYTES; } m->m_len = len; if (m0->m_flags & M_PKTHDR) m0->m_pkthdr.len += len; totlen -= len; mlast->m_next = m; mlast = m; } cmd->dstu.dst_m = m0; } } if (cmd->dst_map == NULL) { if (bus_dmamap_create(sc->sc_dmat, HIFN_MAX_SEGLEN * MAX_SCATTER, MAX_SCATTER, HIFN_MAX_SEGLEN, 0, BUS_DMA_NOWAIT, &cmd->dst_map)) { err = ENOMEM; goto err_srcmap; } if (crp->crp_flags & CRYPTO_F_IMBUF) { if (bus_dmamap_load_mbuf(sc->sc_dmat, cmd->dst_map, cmd->dstu.dst_m, BUS_DMA_NOWAIT)) { err = ENOMEM; goto err_dstmap1; } } else if (crp->crp_flags & CRYPTO_F_IOV) { if (bus_dmamap_load_uio(sc->sc_dmat, cmd->dst_map, cmd->dstu.dst_io, BUS_DMA_NOWAIT)) { err = ENOMEM; goto err_dstmap1; } } } #ifdef HIFN_DEBUG if (hifn_debug) printf("%s: Entering cmd: stat %8x ien %8x u %d/%d/%d/%d n %d/%d\n", device_xname(&sc->sc_dv), READ_REG_1(sc, HIFN_1_DMA_CSR), READ_REG_1(sc, HIFN_1_DMA_IER), dma->cmdu, dma->srcu, dma->dstu, dma->resu, cmd->src_map->dm_nsegs, cmd->dst_map->dm_nsegs); #endif if (cmd->src_map == cmd->dst_map) bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD); else { bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->sc_dmat, cmd->dst_map, 0, cmd->dst_map->dm_mapsize, BUS_DMASYNC_PREREAD); } s = splnet(); /* * need 1 cmd, and 1 res * need N src, and N dst */ if ((dma->cmdu + 1) > HIFN_D_CMD_RSIZE || (dma->resu + 1) > HIFN_D_RES_RSIZE) { splx(s); err = ENOMEM; goto err_dstmap; } if ((dma->srcu + cmd->src_map->dm_nsegs) > HIFN_D_SRC_RSIZE || (dma->dstu + cmd->dst_map->dm_nsegs + 1) > HIFN_D_DST_RSIZE) { splx(s); err = ENOMEM; goto err_dstmap; } if (dma->cmdi == HIFN_D_CMD_RSIZE) { dma->cmdi = 0; dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } cmdi = dma->cmdi++; cmdlen = hifn_write_command(cmd, dma->command_bufs[cmdi]); HIFN_CMD_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE); /* .p for command/result already set */ dma->cmdr[cmdi].l = htole32(cmdlen | HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ); HIFN_CMDR_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); dma->cmdu++; if (sc->sc_c_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA); sc->sc_c_busy = 1; SET_LED(sc, HIFN_MIPSRST_LED0); } /* * We don't worry about missing an interrupt (which a "command wait" * interrupt salvages us from), unless there is more than one command * in the queue. * * XXX We do seem to miss some interrupts. So we always enable * XXX command wait. From OpenBSD revision 1.149. * */ #if 0 if (dma->cmdu > 1) { #endif sc->sc_dmaier |= HIFN_DMAIER_C_WAIT; WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier); #if 0 } #endif hifnstats.hst_ipackets++; hifnstats.hst_ibytes += cmd->src_map->dm_mapsize; hifn_dmamap_load_src(sc, cmd); if (sc->sc_s_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA); sc->sc_s_busy = 1; SET_LED(sc, HIFN_MIPSRST_LED1); } /* * Unlike other descriptors, we don't mask done interrupt from * result descriptor. */ #ifdef HIFN_DEBUG if (hifn_debug) printf("load res\n"); #endif if (dma->resi == HIFN_D_RES_RSIZE) { dma->resi = 0; dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } resi = dma->resi++; dma->hifn_commands[resi] = cmd; HIFN_RES_SYNC(sc, resi, BUS_DMASYNC_PREREAD); dma->resr[resi].l = htole32(HIFN_MAX_RESULT | HIFN_D_VALID | HIFN_D_LAST); HIFN_RESR_SYNC(sc, resi, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); dma->resu++; if (sc->sc_r_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA); sc->sc_r_busy = 1; SET_LED(sc, HIFN_MIPSRST_LED2); } if (cmd->sloplen) cmd->slopidx = resi; hifn_dmamap_load_dst(sc, cmd); if (sc->sc_d_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA); sc->sc_d_busy = 1; } #ifdef HIFN_DEBUG if (hifn_debug) printf("%s: command: stat %8x ier %8x\n", device_xname(&sc->sc_dv), READ_REG_1(sc, HIFN_1_DMA_CSR), READ_REG_1(sc, HIFN_1_DMA_IER)); #endif sc->sc_active = 5; splx(s); return (err); /* success */ err_dstmap: if (cmd->src_map != cmd->dst_map) bus_dmamap_unload(sc->sc_dmat, cmd->dst_map); err_dstmap1: if (cmd->src_map != cmd->dst_map) bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map); err_srcmap: if (crp->crp_flags & CRYPTO_F_IMBUF && cmd->srcu.src_m != cmd->dstu.dst_m) m_freem(cmd->dstu.dst_m); bus_dmamap_unload(sc->sc_dmat, cmd->src_map); err_srcmap1: bus_dmamap_destroy(sc->sc_dmat, cmd->src_map); return (err); } static void hifn_tick(void *vsc) { struct hifn_softc *sc = vsc; int s; s = splnet(); if (sc->sc_active == 0) { struct hifn_dma *dma = sc->sc_dma; u_int32_t r = 0; if (dma->cmdu == 0 && sc->sc_c_busy) { sc->sc_c_busy = 0; r |= HIFN_DMACSR_C_CTRL_DIS; CLR_LED(sc, HIFN_MIPSRST_LED0); } if (dma->srcu == 0 && sc->sc_s_busy) { sc->sc_s_busy = 0; r |= HIFN_DMACSR_S_CTRL_DIS; CLR_LED(sc, HIFN_MIPSRST_LED1); } if (dma->dstu == 0 && sc->sc_d_busy) { sc->sc_d_busy = 0; r |= HIFN_DMACSR_D_CTRL_DIS; } if (dma->resu == 0 && sc->sc_r_busy) { sc->sc_r_busy = 0; r |= HIFN_DMACSR_R_CTRL_DIS; CLR_LED(sc, HIFN_MIPSRST_LED2); } if (r) WRITE_REG_1(sc, HIFN_1_DMA_CSR, r); } else sc->sc_active--; splx(s); #ifdef __OpenBSD__ timeout_add(&sc->sc_tickto, hz); #else callout_reset(&sc->sc_tickto, hz, hifn_tick, sc); #endif } static int hifn_intr(void *arg) { struct hifn_softc *sc = arg; struct hifn_dma *dma = sc->sc_dma; u_int32_t dmacsr, restart; int i, u; dmacsr = READ_REG_1(sc, HIFN_1_DMA_CSR); #ifdef HIFN_DEBUG if (hifn_debug) printf("%s: irq: stat %08x ien %08x u %d/%d/%d/%d\n", device_xname(&sc->sc_dv), dmacsr, READ_REG_1(sc, HIFN_1_DMA_IER), dma->cmdu, dma->srcu, dma->dstu, dma->resu); #endif /* Nothing in the DMA unit interrupted */ if ((dmacsr & sc->sc_dmaier) == 0) return (0); WRITE_REG_1(sc, HIFN_1_DMA_CSR, dmacsr & sc->sc_dmaier); if (dmacsr & HIFN_DMACSR_ENGINE) WRITE_REG_0(sc, HIFN_0_PUISR, READ_REG_0(sc, HIFN_0_PUISR)); if ((sc->sc_flags & HIFN_HAS_PUBLIC) && (dmacsr & HIFN_DMACSR_PUBDONE)) WRITE_REG_1(sc, HIFN_1_PUB_STATUS, READ_REG_1(sc, HIFN_1_PUB_STATUS) | HIFN_PUBSTS_DONE); restart = dmacsr & (HIFN_DMACSR_R_OVER | HIFN_DMACSR_D_OVER); if (restart) printf("%s: overrun %x\n", device_xname(&sc->sc_dv), dmacsr); if (sc->sc_flags & HIFN_IS_7811) { if (dmacsr & HIFN_DMACSR_ILLR) printf("%s: illegal read\n", device_xname(&sc->sc_dv)); if (dmacsr & HIFN_DMACSR_ILLW) printf("%s: illegal write\n", device_xname(&sc->sc_dv)); } restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT | HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT); if (restart) { printf("%s: abort, resetting.\n", device_xname(&sc->sc_dv)); hifnstats.hst_abort++; hifn_abort(sc); return (1); } if ((dmacsr & HIFN_DMACSR_C_WAIT) && (dma->resu == 0)) { /* * If no slots to process and we receive a "waiting on * command" interrupt, we disable the "waiting on command" * (by clearing it). */ sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT; WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier); } /* clear the rings */ i = dma->resk; while (dma->resu != 0) { HIFN_RESR_SYNC(sc, i, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); if (dma->resr[i].l & htole32(HIFN_D_VALID)) { HIFN_RESR_SYNC(sc, i, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); break; } if (i != HIFN_D_RES_RSIZE) { struct hifn_command *cmd; HIFN_RES_SYNC(sc, i, BUS_DMASYNC_POSTREAD); cmd = dma->hifn_commands[i]; KASSERT(cmd != NULL /*("hifn_intr: null command slot %u", i)*/); dma->hifn_commands[i] = NULL; hifn_callback(sc, cmd, dma->result_bufs[i]); hifnstats.hst_opackets++; } if (++i == (HIFN_D_RES_RSIZE + 1)) i = 0; else dma->resu--; } dma->resk = i; i = dma->srck; u = dma->srcu; while (u != 0) { HIFN_SRCR_SYNC(sc, i, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); if (dma->srcr[i].l & htole32(HIFN_D_VALID)) { HIFN_SRCR_SYNC(sc, i, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); break; } if (++i == (HIFN_D_SRC_RSIZE + 1)) i = 0; else u--; } dma->srck = i; dma->srcu = u; i = dma->cmdk; u = dma->cmdu; while (u != 0) { HIFN_CMDR_SYNC(sc, i, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); if (dma->cmdr[i].l & htole32(HIFN_D_VALID)) { HIFN_CMDR_SYNC(sc, i, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); break; } if (i != HIFN_D_CMD_RSIZE) { u--; HIFN_CMD_SYNC(sc, i, BUS_DMASYNC_POSTWRITE); } if (++i == (HIFN_D_CMD_RSIZE + 1)) i = 0; } dma->cmdk = i; dma->cmdu = u; return (1); } /* * 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 hifn_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri) { struct cryptoini *c; struct hifn_softc *sc = arg; int i, mac = 0, cry = 0, comp = 0; KASSERT(sc != NULL /*, ("hifn_newsession: null softc")*/); if (sidp == NULL || cri == NULL || sc == NULL) return (EINVAL); for (i = 0; i < sc->sc_maxses; i++) if (sc->sc_sessions[i].hs_state == HS_STATE_FREE) break; if (i == sc->sc_maxses) return (ENOMEM); for (c = cri; c != NULL; c = c->cri_next) { switch (c->cri_alg) { case CRYPTO_MD5: case CRYPTO_SHA1: case CRYPTO_MD5_HMAC_96: case CRYPTO_SHA1_HMAC_96: if (mac) return (EINVAL); mac = 1; break; case CRYPTO_DES_CBC: case CRYPTO_3DES_CBC: case CRYPTO_AES_CBC: /* Note that this is an initialization vector, not a cipher key; any function giving sufficient Hamming distance between outputs is fine. Use of RC4 to generate IVs has been FIPS140-2 certified by several labs. */ #ifdef __NetBSD__ arc4randbytes(sc->sc_sessions[i].hs_iv, c->cri_alg == CRYPTO_AES_CBC ? HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH); #else /* FreeBSD and OpenBSD have get_random_bytes */ /* XXX this may read fewer, does it matter? */ get_random_bytes(sc->sc_sessions[i].hs_iv, c->cri_alg == CRYPTO_AES_CBC ? HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH); #endif /*FALLTHROUGH*/ case CRYPTO_ARC4: if (cry) return (EINVAL); cry = 1; break; #ifdef HAVE_CRYPTO_LZS case CRYPTO_LZS_COMP: if (comp) return (EINVAL); comp = 1; break; #endif default: return (EINVAL); } } if (mac == 0 && cry == 0 && comp == 0) return (EINVAL); /* * XXX only want to support compression without chaining to * MAC/crypt engine right now */ if ((comp && mac) || (comp && cry)) return (EINVAL); *sidp = HIFN_SID(device_unit(&sc->sc_dv), i); sc->sc_sessions[i].hs_state = HS_STATE_USED; return (0); } /* * Deallocate a session. * XXX this routine should run a zero'd mac/encrypt key into context ram. * XXX to blow away any keys already stored there. */ static int hifn_freesession(void *arg, u_int64_t tid) { struct hifn_softc *sc = arg; int session; u_int32_t sid = ((u_int32_t) tid) & 0xffffffff; KASSERT(sc != NULL /*, ("hifn_freesession: null softc")*/); if (sc == NULL) return (EINVAL); session = HIFN_SESSION(sid); if (session >= sc->sc_maxses) return (EINVAL); bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session])); return (0); } static int hifn_process(void *arg, struct cryptop *crp, int hint) { struct hifn_softc *sc = arg; struct hifn_command *cmd = NULL; int session, err, ivlen; struct cryptodesc *crd1, *crd2, *maccrd, *enccrd; if (crp == NULL || crp->crp_callback == NULL) { hifnstats.hst_invalid++; return (EINVAL); } session = HIFN_SESSION(crp->crp_sid); if (sc == NULL || session >= sc->sc_maxses) { err = EINVAL; goto errout; } cmd = (struct hifn_command *)malloc(sizeof(struct hifn_command), M_DEVBUF, M_NOWAIT|M_ZERO); if (cmd == NULL) { hifnstats.hst_nomem++; err = ENOMEM; goto errout; } if (crp->crp_flags & CRYPTO_F_IMBUF) { cmd->srcu.src_m = (struct mbuf *)crp->crp_buf; cmd->dstu.dst_m = (struct mbuf *)crp->crp_buf; } else if (crp->crp_flags & CRYPTO_F_IOV) { cmd->srcu.src_io = (struct uio *)crp->crp_buf; cmd->dstu.dst_io = (struct uio *)crp->crp_buf; } else { err = EINVAL; goto errout; /* XXX we don't handle contiguous buffers! */ } crd1 = crp->crp_desc; if (crd1 == NULL) { err = EINVAL; goto errout; } crd2 = crd1->crd_next; if (crd2 == NULL) { if (crd1->crd_alg == CRYPTO_MD5_HMAC_96 || crd1->crd_alg == CRYPTO_SHA1_HMAC_96 || crd1->crd_alg == CRYPTO_SHA1 || crd1->crd_alg == CRYPTO_MD5) { maccrd = crd1; enccrd = NULL; } else if (crd1->crd_alg == CRYPTO_DES_CBC || crd1->crd_alg == CRYPTO_3DES_CBC || crd1->crd_alg == CRYPTO_AES_CBC || crd1->crd_alg == CRYPTO_ARC4) { if ((crd1->crd_flags & CRD_F_ENCRYPT) == 0) cmd->base_masks |= HIFN_BASE_CMD_DECODE; maccrd = NULL; enccrd = crd1; #ifdef HAVE_CRYPTO_LZS } else if (crd1->crd_alg == CRYPTO_LZS_COMP) { return (hifn_compression(sc, crp, cmd)); #endif } else { err = EINVAL; goto errout; } } else { if ((crd1->crd_alg == CRYPTO_MD5_HMAC_96 || crd1->crd_alg == CRYPTO_SHA1_HMAC_96 || crd1->crd_alg == CRYPTO_MD5 || crd1->crd_alg == CRYPTO_SHA1) && (crd2->crd_alg == CRYPTO_DES_CBC || crd2->crd_alg == CRYPTO_3DES_CBC || crd2->crd_alg == CRYPTO_AES_CBC || crd2->crd_alg == CRYPTO_ARC4) && ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) { cmd->base_masks = HIFN_BASE_CMD_DECODE; maccrd = crd1; enccrd = crd2; } else if ((crd1->crd_alg == CRYPTO_DES_CBC || crd1->crd_alg == CRYPTO_ARC4 || crd1->crd_alg == CRYPTO_3DES_CBC || crd1->crd_alg == CRYPTO_AES_CBC) && (crd2->crd_alg == CRYPTO_MD5_HMAC_96 || crd2->crd_alg == CRYPTO_SHA1_HMAC_96 || crd2->crd_alg == CRYPTO_MD5 || crd2->crd_alg == CRYPTO_SHA1) && (crd1->crd_flags & CRD_F_ENCRYPT)) { enccrd = crd1; maccrd = crd2; } else { /* * We cannot order the 7751 as requested */ err = EINVAL; goto errout; } } if (enccrd) { cmd->enccrd = enccrd; cmd->base_masks |= HIFN_BASE_CMD_CRYPT; switch (enccrd->crd_alg) { case CRYPTO_ARC4: cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_RC4; if ((enccrd->crd_flags & CRD_F_ENCRYPT) != sc->sc_sessions[session].hs_prev_op) sc->sc_sessions[session].hs_state = HS_STATE_USED; break; case CRYPTO_DES_CBC: cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_DES | HIFN_CRYPT_CMD_MODE_CBC | HIFN_CRYPT_CMD_NEW_IV; break; case CRYPTO_3DES_CBC: cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_3DES | HIFN_CRYPT_CMD_MODE_CBC | HIFN_CRYPT_CMD_NEW_IV; break; case CRYPTO_AES_CBC: cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_AES | HIFN_CRYPT_CMD_MODE_CBC | HIFN_CRYPT_CMD_NEW_IV; break; default: err = EINVAL; goto errout; } if (enccrd->crd_alg != CRYPTO_ARC4) { ivlen = ((enccrd->crd_alg == CRYPTO_AES_CBC) ? HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH); if (enccrd->crd_flags & CRD_F_ENCRYPT) { if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) bcopy(enccrd->crd_iv, cmd->iv, ivlen); else bcopy(sc->sc_sessions[session].hs_iv, cmd->iv, ivlen); if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) { if (crp->crp_flags & CRYPTO_F_IMBUF) m_copyback(cmd->srcu.src_m, enccrd->crd_inject, ivlen, cmd->iv); else if (crp->crp_flags & CRYPTO_F_IOV) cuio_copyback(cmd->srcu.src_io, enccrd->crd_inject, ivlen, cmd->iv); } } else { if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) bcopy(enccrd->crd_iv, cmd->iv, ivlen); else if (crp->crp_flags & CRYPTO_F_IMBUF) m_copydata(cmd->srcu.src_m, enccrd->crd_inject, ivlen, cmd->iv); else if (crp->crp_flags & CRYPTO_F_IOV) cuio_copydata(cmd->srcu.src_io, enccrd->crd_inject, ivlen, cmd->iv); } } cmd->ck = enccrd->crd_key; cmd->cklen = enccrd->crd_klen >> 3; /* * Need to specify the size for the AES key in the masks. */ if ((cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) == HIFN_CRYPT_CMD_ALG_AES) { switch (cmd->cklen) { case 16: cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_128; break; case 24: cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_192; break; case 32: cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_256; break; default: err = EINVAL; goto errout; } } if (sc->sc_sessions[session].hs_state == HS_STATE_USED) cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY; } if (maccrd) { cmd->maccrd = maccrd; cmd->base_masks |= HIFN_BASE_CMD_MAC; switch (maccrd->crd_alg) { case CRYPTO_MD5: cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 | HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH | HIFN_MAC_CMD_POS_IPSEC; break; case CRYPTO_MD5_HMAC_96: cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 | HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC | HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC; break; case CRYPTO_SHA1: cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 | HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH | HIFN_MAC_CMD_POS_IPSEC; break; case CRYPTO_SHA1_HMAC_96: cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 | HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC | HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC; break; } if ((maccrd->crd_alg == CRYPTO_SHA1_HMAC_96 || maccrd->crd_alg == CRYPTO_MD5_HMAC_96) && sc->sc_sessions[session].hs_state == HS_STATE_USED) { cmd->mac_masks |= HIFN_MAC_CMD_NEW_KEY; bcopy(maccrd->crd_key, cmd->mac, maccrd->crd_klen >> 3); bzero(cmd->mac + (maccrd->crd_klen >> 3), HIFN_MAC_KEY_LENGTH - (maccrd->crd_klen >> 3)); } } cmd->crp = crp; cmd->session_num = session; cmd->softc = sc; err = hifn_crypto(sc, cmd, crp, hint); if (err == 0) { if (enccrd) sc->sc_sessions[session].hs_prev_op = enccrd->crd_flags & CRD_F_ENCRYPT; if (sc->sc_sessions[session].hs_state == HS_STATE_USED) sc->sc_sessions[session].hs_state = HS_STATE_KEY; return 0; } else if (err == ERESTART) { /* * There weren't enough resources to dispatch the request * to the part. Notify the caller so they'll requeue this * request and resubmit it again soon. */ #ifdef HIFN_DEBUG if (hifn_debug) printf(device_xname(&sc->sc_dv), "requeue request\n"); #endif free(cmd, M_DEVBUF); sc->sc_needwakeup |= CRYPTO_SYMQ; return (err); } errout: if (cmd != NULL) free(cmd, M_DEVBUF); if (err == EINVAL) hifnstats.hst_invalid++; else hifnstats.hst_nomem++; crp->crp_etype = err; crypto_done(crp); return (0); } static void hifn_abort(struct hifn_softc *sc) { struct hifn_dma *dma = sc->sc_dma; struct hifn_command *cmd; struct cryptop *crp; int i, u; i = dma->resk; u = dma->resu; while (u != 0) { cmd = dma->hifn_commands[i]; KASSERT(cmd != NULL /*, ("hifn_abort: null cmd slot %u", i)*/); dma->hifn_commands[i] = NULL; crp = cmd->crp; if ((dma->resr[i].l & htole32(HIFN_D_VALID)) == 0) { /* Salvage what we can. */ hifnstats.hst_opackets++; hifn_callback(sc, cmd, dma->result_bufs[i]); } else { if (cmd->src_map == cmd->dst_map) { bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); } else { bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(sc->sc_dmat, cmd->dst_map, 0, cmd->dst_map->dm_mapsize, BUS_DMASYNC_POSTREAD); } if (cmd->srcu.src_m != cmd->dstu.dst_m) { m_freem(cmd->srcu.src_m); crp->crp_buf = (void *)cmd->dstu.dst_m; } /* non-shared buffers cannot be restarted */ if (cmd->src_map != cmd->dst_map) { /* * XXX should be EAGAIN, delayed until * after the reset. */ crp->crp_etype = ENOMEM; bus_dmamap_unload(sc->sc_dmat, cmd->dst_map); bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map); } else crp->crp_etype = ENOMEM; bus_dmamap_unload(sc->sc_dmat, cmd->src_map); bus_dmamap_destroy(sc->sc_dmat, cmd->src_map); free(cmd, M_DEVBUF); if (crp->crp_etype != EAGAIN) crypto_done(crp); } if (++i == HIFN_D_RES_RSIZE) i = 0; u--; } dma->resk = i; dma->resu = u; /* Force upload of key next time */ for (i = 0; i < sc->sc_maxses; i++) if (sc->sc_sessions[i].hs_state == HS_STATE_KEY) sc->sc_sessions[i].hs_state = HS_STATE_USED; hifn_reset_board(sc, 1); hifn_init_dma(sc); hifn_init_pci_registers(sc); } static void hifn_callback(struct hifn_softc *sc, struct hifn_command *cmd, u_int8_t *resbuf) { struct hifn_dma *dma = sc->sc_dma; struct cryptop *crp = cmd->crp; struct cryptodesc *crd; struct mbuf *m; int totlen, i, u, ivlen; if (cmd->src_map == cmd->dst_map) bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); else { bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(sc->sc_dmat, cmd->dst_map, 0, cmd->dst_map->dm_mapsize, BUS_DMASYNC_POSTREAD); } if (crp->crp_flags & CRYPTO_F_IMBUF) { if (cmd->srcu.src_m != cmd->dstu.dst_m) { crp->crp_buf = (void *)cmd->dstu.dst_m; totlen = cmd->src_map->dm_mapsize; for (m = cmd->dstu.dst_m; m != NULL; m = m->m_next) { if (totlen < m->m_len) { m->m_len = totlen; totlen = 0; } else totlen -= m->m_len; } cmd->dstu.dst_m->m_pkthdr.len = cmd->srcu.src_m->m_pkthdr.len; m_freem(cmd->srcu.src_m); } } if (cmd->sloplen != 0) { if (crp->crp_flags & CRYPTO_F_IMBUF) m_copyback((struct mbuf *)crp->crp_buf, cmd->src_map->dm_mapsize - cmd->sloplen, cmd->sloplen, (void *)&dma->slop[cmd->slopidx]); else if (crp->crp_flags & CRYPTO_F_IOV) cuio_copyback((struct uio *)crp->crp_buf, cmd->src_map->dm_mapsize - cmd->sloplen, cmd->sloplen, (void *)&dma->slop[cmd->slopidx]); } i = dma->dstk; u = dma->dstu; while (u != 0) { bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, offsetof(struct hifn_dma, dstr[i]), sizeof(struct hifn_desc), BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); if (dma->dstr[i].l & htole32(HIFN_D_VALID)) { bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, offsetof(struct hifn_dma, dstr[i]), sizeof(struct hifn_desc), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); break; } if (++i == (HIFN_D_DST_RSIZE + 1)) i = 0; else u--; } dma->dstk = i; dma->dstu = u; hifnstats.hst_obytes += cmd->dst_map->dm_mapsize; if ((cmd->base_masks & (HIFN_BASE_CMD_CRYPT | HIFN_BASE_CMD_DECODE)) == HIFN_BASE_CMD_CRYPT) { for (crd = crp->crp_desc; crd; crd = crd->crd_next) { if (crd->crd_alg != CRYPTO_DES_CBC && crd->crd_alg != CRYPTO_3DES_CBC && crd->crd_alg != CRYPTO_AES_CBC) continue; ivlen = ((crd->crd_alg == CRYPTO_AES_CBC) ? HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH); if (crp->crp_flags & CRYPTO_F_IMBUF) m_copydata((struct mbuf *)crp->crp_buf, crd->crd_skip + crd->crd_len - ivlen, ivlen, cmd->softc->sc_sessions[cmd->session_num].hs_iv); else if (crp->crp_flags & CRYPTO_F_IOV) { cuio_copydata((struct uio *)crp->crp_buf, crd->crd_skip + crd->crd_len - ivlen, ivlen, cmd->softc->sc_sessions[cmd->session_num].hs_iv); } /* XXX We do not handle contig data */ break; } } if (cmd->base_masks & HIFN_BASE_CMD_MAC) { u_int8_t *macbuf; macbuf = resbuf + sizeof(struct hifn_base_result); if (cmd->base_masks & HIFN_BASE_CMD_COMP) macbuf += sizeof(struct hifn_comp_result); macbuf += sizeof(struct hifn_mac_result); for (crd = crp->crp_desc; crd; crd = crd->crd_next) { int len; if (crd->crd_alg == CRYPTO_MD5) len = 16; else if (crd->crd_alg == CRYPTO_SHA1) len = 20; else if (crd->crd_alg == CRYPTO_MD5_HMAC_96 || crd->crd_alg == CRYPTO_SHA1_HMAC_96) len = 12; else continue; if (crp->crp_flags & CRYPTO_F_IMBUF) m_copyback((struct mbuf *)crp->crp_buf, crd->crd_inject, len, macbuf); else if ((crp->crp_flags & CRYPTO_F_IOV) && crp->crp_mac) bcopy((void *)macbuf, crp->crp_mac, len); break; } } if (cmd->src_map != cmd->dst_map) { bus_dmamap_unload(sc->sc_dmat, cmd->dst_map); bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map); } bus_dmamap_unload(sc->sc_dmat, cmd->src_map); bus_dmamap_destroy(sc->sc_dmat, cmd->src_map); free(cmd, M_DEVBUF); crypto_done(crp); } #ifdef HAVE_CRYPTO_LZS static int hifn_compression(struct hifn_softc *sc, struct cryptop *crp, struct hifn_command *cmd) { struct cryptodesc *crd = crp->crp_desc; int s, err = 0; cmd->compcrd = crd; cmd->base_masks |= HIFN_BASE_CMD_COMP; if ((crp->crp_flags & CRYPTO_F_IMBUF) == 0) { /* * XXX can only handle mbufs right now since we can * XXX dynamically resize them. */ err = EINVAL; return (ENOMEM); } if ((crd->crd_flags & CRD_F_COMP) == 0) cmd->base_masks |= HIFN_BASE_CMD_DECODE; if (crd->crd_alg == CRYPTO_LZS_COMP) cmd->comp_masks |= HIFN_COMP_CMD_ALG_LZS | HIFN_COMP_CMD_CLEARHIST; if (bus_dmamap_create(sc->sc_dmat, HIFN_MAX_DMALEN, MAX_SCATTER, HIFN_MAX_SEGLEN, 0, BUS_DMA_NOWAIT, &cmd->src_map)) { err = ENOMEM; goto fail; } if (bus_dmamap_create(sc->sc_dmat, HIFN_MAX_DMALEN, MAX_SCATTER, HIFN_MAX_SEGLEN, 0, BUS_DMA_NOWAIT, &cmd->dst_map)) { err = ENOMEM; goto fail; } if (crp->crp_flags & CRYPTO_F_IMBUF) { int len; if (bus_dmamap_load_mbuf(sc->sc_dmat, cmd->src_map, cmd->srcu.src_m, BUS_DMA_NOWAIT)) { err = ENOMEM; goto fail; } len = cmd->src_map->dm_mapsize / MCLBYTES; if ((cmd->src_map->dm_mapsize % MCLBYTES) != 0) len++; len *= MCLBYTES; if ((crd->crd_flags & CRD_F_COMP) == 0) len *= 4; if (len > HIFN_MAX_DMALEN) len = HIFN_MAX_DMALEN; cmd->dstu.dst_m = hifn_mkmbuf_chain(len, cmd->srcu.src_m); if (cmd->dstu.dst_m == NULL) { err = ENOMEM; goto fail; } if (bus_dmamap_load_mbuf(sc->sc_dmat, cmd->dst_map, cmd->dstu.dst_m, BUS_DMA_NOWAIT)) { err = ENOMEM; goto fail; } } else if (crp->crp_flags & CRYPTO_F_IOV) { if (bus_dmamap_load_uio(sc->sc_dmat, cmd->src_map, cmd->srcu.src_io, BUS_DMA_NOWAIT)) { err = ENOMEM; goto fail; } if (bus_dmamap_load_uio(sc->sc_dmat, cmd->dst_map, cmd->dstu.dst_io, BUS_DMA_NOWAIT)) { err = ENOMEM; goto fail; } } if (cmd->src_map == cmd->dst_map) bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD); else { bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->sc_dmat, cmd->dst_map, 0, cmd->dst_map->dm_mapsize, BUS_DMASYNC_PREREAD); } cmd->crp = crp; /* * Always use session 0. The modes of compression we use are * stateless and there is always at least one compression * context, zero. */ cmd->session_num = 0; cmd->softc = sc; s = splnet(); err = hifn_compress_enter(sc, cmd); splx(s); if (err != 0) goto fail; return (0); fail: if (cmd->dst_map != NULL) { if (cmd->dst_map->dm_nsegs > 0) bus_dmamap_unload(sc->sc_dmat, cmd->dst_map); bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map); } if (cmd->src_map != NULL) { if (cmd->src_map->dm_nsegs > 0) bus_dmamap_unload(sc->sc_dmat, cmd->src_map); bus_dmamap_destroy(sc->sc_dmat, cmd->src_map); } free(cmd, M_DEVBUF); if (err == EINVAL) hifnstats.hst_invalid++; else hifnstats.hst_nomem++; crp->crp_etype = err; crypto_done(crp); return (0); } /* * must be called at splnet() */ static int hifn_compress_enter(struct hifn_softc *sc, struct hifn_command *cmd) { struct hifn_dma *dma = sc->sc_dma; int cmdi, resi; u_int32_t cmdlen; if ((dma->cmdu + 1) > HIFN_D_CMD_RSIZE || (dma->resu + 1) > HIFN_D_CMD_RSIZE) return (ENOMEM); if ((dma->srcu + cmd->src_map->dm_nsegs) > HIFN_D_SRC_RSIZE || (dma->dstu + cmd->dst_map->dm_nsegs) > HIFN_D_DST_RSIZE) return (ENOMEM); if (dma->cmdi == HIFN_D_CMD_RSIZE) { dma->cmdi = 0; dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } cmdi = dma->cmdi++; cmdlen = hifn_write_command(cmd, dma->command_bufs[cmdi]); HIFN_CMD_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE); /* .p for command/result already set */ dma->cmdr[cmdi].l = htole32(cmdlen | HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ); HIFN_CMDR_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); dma->cmdu++; if (sc->sc_c_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA); sc->sc_c_busy = 1; SET_LED(sc, HIFN_MIPSRST_LED0); } /* * We don't worry about missing an interrupt (which a "command wait" * interrupt salvages us from), unless there is more than one command * in the queue. */ if (dma->cmdu > 1) { sc->sc_dmaier |= HIFN_DMAIER_C_WAIT; WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier); } hifnstats.hst_ipackets++; hifnstats.hst_ibytes += cmd->src_map->dm_mapsize; hifn_dmamap_load_src(sc, cmd); if (sc->sc_s_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA); sc->sc_s_busy = 1; SET_LED(sc, HIFN_MIPSRST_LED1); } /* * Unlike other descriptors, we don't mask done interrupt from * result descriptor. */ if (dma->resi == HIFN_D_RES_RSIZE) { dma->resi = 0; dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID | HIFN_D_JUMP | HIFN_D_MASKDONEIRQ); HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } resi = dma->resi++; dma->hifn_commands[resi] = cmd; HIFN_RES_SYNC(sc, resi, BUS_DMASYNC_PREREAD); dma->resr[resi].l = htole32(HIFN_MAX_RESULT | HIFN_D_VALID | HIFN_D_LAST); HIFN_RESR_SYNC(sc, resi, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); dma->resu++; if (sc->sc_r_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA); sc->sc_r_busy = 1; SET_LED(sc, HIFN_MIPSRST_LED2); } if (cmd->sloplen) cmd->slopidx = resi; hifn_dmamap_load_dst(sc, cmd); if (sc->sc_d_busy == 0) { WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA); sc->sc_d_busy = 1; } sc->sc_active = 5; cmd->cmd_callback = hifn_callback_comp; return (0); } static void hifn_callback_comp(struct hifn_softc *sc, struct hifn_command *cmd, u_int8_t *resbuf) { struct hifn_base_result baseres; struct cryptop *crp = cmd->crp; struct hifn_dma *dma = sc->sc_dma; struct mbuf *m; int err = 0, i, u; u_int32_t olen; bus_size_t dstsize; bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(sc->sc_dmat, cmd->dst_map, 0, cmd->dst_map->dm_mapsize, BUS_DMASYNC_POSTREAD); dstsize = cmd->dst_map->dm_mapsize; bus_dmamap_unload(sc->sc_dmat, cmd->dst_map); bcopy(resbuf, &baseres, sizeof(struct hifn_base_result)); i = dma->dstk; u = dma->dstu; while (u != 0) { bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, offsetof(struct hifn_dma, dstr[i]), sizeof(struct hifn_desc), BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); if (dma->dstr[i].l & htole32(HIFN_D_VALID)) { bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, offsetof(struct hifn_dma, dstr[i]), sizeof(struct hifn_desc), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); break; } if (++i == (HIFN_D_DST_RSIZE + 1)) i = 0; else u--; } dma->dstk = i; dma->dstu = u; if (baseres.flags & htole16(HIFN_BASE_RES_DSTOVERRUN)) { bus_size_t xlen; xlen = dstsize; m_freem(cmd->dstu.dst_m); if (xlen == HIFN_MAX_DMALEN) { /* We've done all we can. */ err = E2BIG; goto out; } xlen += MCLBYTES; if (xlen > HIFN_MAX_DMALEN) xlen = HIFN_MAX_DMALEN; cmd->dstu.dst_m = hifn_mkmbuf_chain(xlen, cmd->srcu.src_m); if (cmd->dstu.dst_m == NULL) { err = ENOMEM; goto out; } if (bus_dmamap_load_mbuf(sc->sc_dmat, cmd->dst_map, cmd->dstu.dst_m, BUS_DMA_NOWAIT)) { err = ENOMEM; goto out; } bus_dmamap_sync(sc->sc_dmat, cmd->src_map, 0, cmd->src_map->dm_mapsize, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->sc_dmat, cmd->dst_map, 0, cmd->dst_map->dm_mapsize, BUS_DMASYNC_PREREAD); /* already at splnet... */ err = hifn_compress_enter(sc, cmd); if (err != 0) goto out; return; } olen = dstsize - (letoh16(baseres.dst_cnt) | (((letoh16(baseres.session) & HIFN_BASE_RES_DSTLEN_M) >> HIFN_BASE_RES_DSTLEN_S) << 16)); crp->crp_olen = olen - cmd->compcrd->crd_skip; bus_dmamap_unload(sc->sc_dmat, cmd->src_map); bus_dmamap_destroy(sc->sc_dmat, cmd->src_map); bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map); m = cmd->dstu.dst_m; if (m->m_flags & M_PKTHDR) m->m_pkthdr.len = olen; crp->crp_buf = (void *)m; for (; m != NULL; m = m->m_next) { if (olen >= m->m_len) olen -= m->m_len; else { m->m_len = olen; olen = 0; } } m_freem(cmd->srcu.src_m); free(cmd, M_DEVBUF); crp->crp_etype = 0; crypto_done(crp); return; out: if (cmd->dst_map != NULL) { if (cmd->src_map->dm_nsegs != 0) bus_dmamap_unload(sc->sc_dmat, cmd->src_map); bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map); } if (cmd->src_map != NULL) { if (cmd->src_map->dm_nsegs != 0) bus_dmamap_unload(sc->sc_dmat, cmd->src_map); bus_dmamap_destroy(sc->sc_dmat, cmd->src_map); } if (cmd->dstu.dst_m != NULL) m_freem(cmd->dstu.dst_m); free(cmd, M_DEVBUF); crp->crp_etype = err; crypto_done(crp); } static struct mbuf * hifn_mkmbuf_chain(int totlen, struct mbuf *mtemplate) { int len; struct mbuf *m, *m0, *mlast; if (mtemplate->m_flags & M_PKTHDR) { len = MHLEN; MGETHDR(m0, M_DONTWAIT, MT_DATA); } else { len = MLEN; MGET(m0, M_DONTWAIT, MT_DATA); } if (m0 == NULL) return (NULL); if (len == MHLEN) M_DUP_PKTHDR(m0, mtemplate); MCLGET(m0, M_DONTWAIT); if (!(m0->m_flags & M_EXT)) m_freem(m0); len = MCLBYTES; totlen -= len; m0->m_pkthdr.len = m0->m_len = len; mlast = m0; while (totlen > 0) { MGET(m, M_DONTWAIT, MT_DATA); if (m == NULL) { m_freem(m0); return (NULL); } MCLGET(m, M_DONTWAIT); if (!(m->m_flags & M_EXT)) { m_freem(m0); return (NULL); } len = MCLBYTES; m->m_len = len; if (m0->m_flags & M_PKTHDR) m0->m_pkthdr.len += len; totlen -= len; mlast->m_next = m; mlast = m; } return (m0); } #endif /* HAVE_CRYPTO_LZS */ static void hifn_write_4(struct hifn_softc *sc, int reggrp, bus_size_t reg, u_int32_t val) { /* * 7811 PB3 rev/2 parts lock-up on burst writes to Group 0 * and Group 1 registers; avoid conditions that could create * burst writes by doing a read in between the writes. */ if (sc->sc_flags & HIFN_NO_BURSTWRITE) { if (sc->sc_waw_lastgroup == reggrp && sc->sc_waw_lastreg == reg - 4) { bus_space_read_4(sc->sc_st1, sc->sc_sh1, HIFN_1_REVID); } sc->sc_waw_lastgroup = reggrp; sc->sc_waw_lastreg = reg; } if (reggrp == 0) bus_space_write_4(sc->sc_st0, sc->sc_sh0, reg, val); else bus_space_write_4(sc->sc_st1, sc->sc_sh1, reg, val); } static u_int32_t hifn_read_4(struct hifn_softc *sc, int reggrp, bus_size_t reg) { if (sc->sc_flags & HIFN_NO_BURSTWRITE) { sc->sc_waw_lastgroup = -1; sc->sc_waw_lastreg = 1; } if (reggrp == 0) return (bus_space_read_4(sc->sc_st0, sc->sc_sh0, reg)); return (bus_space_read_4(sc->sc_st1, sc->sc_sh1, reg)); }