/* $OpenBSD: ises.c,v 1.16 2001/09/21 19:41:13 ho Exp $ */ /* * Copyright (c) 2000, 2001 Håkan Olsson (ho@crt.se) * 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. * 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. */ /* * PCC-ISES hardware crypto accelerator */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Prototypes and count for the pci_device structure */ int ises_match __P((struct device *, void *, void *)); void ises_attach __P((struct device *, struct device *, void *)); void ises_initstate __P((void *)); void ises_hrng_init __P((struct ises_softc *)); void ises_hrng __P((void *)); void ises_process_oqueue __P((struct ises_softc *)); int ises_queue_cmd __P((struct ises_softc *, u_int32_t, u_int32_t *, u_int32_t (*)(struct ises_softc *, struct ises_cmd *))); u_int32_t ises_get_fwversion __P((struct ises_softc *)); int ises_assert_cmd_mode __P((struct ises_softc *)); int ises_intr __P((void *)); int ises_newsession __P((u_int32_t *, struct cryptoini *)); int ises_freesession __P((u_int64_t)); int ises_process __P((struct cryptop *)); void ises_callback __P((struct ises_q *)); int ises_feed __P((struct ises_softc *)); int ises_bchu_switch_session __P((struct ises_softc *, struct ises_session *, int)); u_int32_t ises_bchu_switch_final __P((struct ises_softc *, struct ises_cmd *)); void ises_read_dma __P((struct ises_softc *)); #define READ_REG(sc,r) \ bus_space_read_4((sc)->sc_memt, (sc)->sc_memh,r) #define WRITE_REG(sc,reg,val) \ bus_space_write_4((sc)->sc_memt, (sc)->sc_memh, reg, val) /* XXX This should probably be (x) = htole32((x)) */ #define SWAP32(x) ((x) = swap32((x))) #ifdef ISESDEBUG # define DPRINTF(x) printf x #else # define DPRINTF(x) #endif #ifdef ISESDEBUG void ises_debug_init __P((struct ises_softc *)); void ises_debug_2 __P((void)); void ises_debug_loop __P((void *)); void ises_showreg __P((void)); void ises_debug_parse_omr __P((struct ises_softc *)); void ises_debug_simple_cmd __P((struct ises_softc *, u_int32_t, u_int32_t)); struct ises_softc *ises_sc; struct timeout ises_db_timeout; int ises_db; #endif /* For HRNG entropy collection, these values gather 1600 bytes/s */ #ifndef ISESRNGBITS #define ISESRNGBITS 128 /* Bits per iteration (mult. of 32) */ #define ISESRNGIPS 100 /* Iterations per second */ #endif /* XXX Disable HRNG while debugging. */ #define ISES_HRNG_DISABLED /* Maximum number of times we try to download the firmware. */ #define ISES_MAX_DOWNLOAD_RETRIES 3 struct cfattach ises_ca = { sizeof(struct ises_softc), ises_match, ises_attach, }; struct cfdriver ises_cd = { 0, "ises", DV_DULL }; struct ises_stats { u_int64_t ibytes; u_int64_t obytes; u_int32_t ipkts; u_int32_t opkts; u_int32_t invalid; u_int32_t nomem; } isesstats; int ises_match(struct device *parent, void *match, void *aux) { struct pci_attach_args *pa = (struct pci_attach_args *)aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_PIJNENBURG && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_PIJNENBURG_PCC_ISES) return (1); return (0); } void ises_attach(struct device *parent, struct device *self, void *aux) { struct ises_softc *sc = (struct ises_softc *)self; struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; pci_intr_handle_t ih; const char *intrstr = NULL; bus_size_t memsize; u_int32_t cmd; bus_dma_segment_t seg; int nsegs, error, state; SIMPLEQ_INIT(&sc->sc_queue); SIMPLEQ_INIT(&sc->sc_qchip); SIMPLEQ_INIT(&sc->sc_cmdq); state = 0; /* Verify PCI space */ cmd = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); cmd |= PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE; pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, cmd); cmd = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); if (!(cmd & PCI_COMMAND_MEM_ENABLE)) { printf(": failed to enable memory mapping\n"); return; } if (!(cmd & PCI_COMMAND_MASTER_ENABLE)) { printf(": failed to enable bus mastering\n"); return; } /* Map control/status registers. */ if (pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, &sc->sc_memt, &sc->sc_memh, NULL, &memsize, 0)) { printf(": can't find mem space\n"); return; } state++; /* Map interrupt. */ if (pci_intr_map(pa, &ih)) { printf(": couldn't map interrupt\n"); goto fail; } state++; intrstr = pci_intr_string(pc, ih); sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ises_intr, sc, self->dv_xname); if (sc->sc_ih == NULL) { printf(": couldn't establish interrupt\n"); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); goto fail; } /* Initialize DMA map */ sc->sc_dmat = pa->pa_dmat; error = bus_dmamap_create(sc->sc_dmat, 1 << PGSHIFT, 1, 1 << PGSHIFT, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &sc->sc_dmamap); if (error) { printf(": cannot create dma map (%d)\n", error); goto fail; } state++; /* Allocate in DMAable memory. */ if (bus_dmamem_alloc(sc->sc_dmat, ISES_B_DATASIZE, 1, 0, &seg, 1, &nsegs, BUS_DMA_NOWAIT)) { printf(": can't alloc dma buffer space\n"); goto fail; } state++; if (bus_dmamem_map(sc->sc_dmat, &seg, nsegs, ISES_B_DATASIZE, &sc->sc_dma_data, 0)) { printf(": can't map dma buffer space\n"); goto fail; } state++; printf(": %s\n", intrstr); bzero(&isesstats, sizeof(isesstats)); sc->sc_cid = crypto_get_driverid(); if (sc->sc_cid < 0) goto fail; /* * Since none of the initialization steps generate interrupts * for example, the hardware reset, we use a number of timeouts * (or init states) to do the rest of the chip initialization. */ sc->sc_initstate = 0; startuphook_establish(ises_initstate, sc); #ifdef ISESDEBUG ises_debug_init(sc); #endif return; fail: switch (state) { /* Always fallthrough here. */ case 4: bus_dmamem_unmap(sc->sc_dmat, (caddr_t)&sc->sc_dma_data, sizeof sc->sc_dma_data); case 3: bus_dmamem_free(sc->sc_dmat, &seg, nsegs); case 2: bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap); case 1: pci_intr_disestablish(pc, sc->sc_ih); default: /* 0 */ bus_space_unmap(sc->sc_memt, sc->sc_memh, memsize); } return; } void ises_initstate(void *v) { /* * Step through chip initialization. * sc->sc_initstate tells us what to do. */ extern int hz; struct ises_softc *sc = v; char *dv = sc->sc_dv.dv_xname; u_int32_t stat; int p, ticks; static int retry_count = 0; /* XXX Should be in softc */ ticks = hz * 3 / 2; /* 1.5s */ p = ISES_STAT_IDP_STATE(READ_REG(sc, ISES_A_STAT)); DPRINTF(("%s: initstate %d, IDP state is %d \"%s\"\n", dv, sc->sc_initstate, p, ises_idp_state[p])); switch (sc->sc_initstate) { case 0: /* Called by dostartuphooks(9). */ timeout_set(&sc->sc_timeout, ises_initstate, sc); /* FALLTHROUGH */ sc->sc_initstate++; case 1: /* Power up the chip (clear powerdown bit) */ stat = READ_REG(sc, ISES_BO_STAT); if (stat & ISES_BO_STAT_POWERDOWN) { stat &= ~ISES_BO_STAT_POWERDOWN; WRITE_REG(sc, ISES_BO_STAT, stat); /* Selftests will take 1 second. */ break; } #if 1 else { /* Power down the chip for sane init, then rerun. */ stat |= ISES_BO_STAT_POWERDOWN; WRITE_REG(sc, ISES_BO_STAT, stat); sc->sc_initstate--; /* Rerun state 1. */ break; } #else /* FALLTHROUGH (chip is already powered up) */ sc->sc_initstate++; #endif case 2: /* Perform a hardware reset */ stat = 0; printf ("%s: initializing...\n", dv); /* Clear all possible bypass bits. */ for (p = 0; p < 128; p++) WRITE_REG(sc, ISES_B_BDATAOUT, 0L); stat |= ISES_BO_STAT_HWRESET; WRITE_REG(sc, ISES_BO_STAT, stat); stat &= ~ISES_BO_STAT_HWRESET; WRITE_REG(sc, ISES_BO_STAT, stat); /* Again, selftests will take 1 second. */ break; case 3: /* Set AConf to zero, i.e 32-bits access to A-int. */ stat = READ_REG(sc, ISES_BO_STAT); stat &= ~ISES_BO_STAT_ACONF; WRITE_REG(sc, ISES_BO_STAT, stat); /* Is the firmware already loaded? */ if (READ_REG(sc, ISES_A_STAT) & ISES_STAT_HW_DA) { /* Yes it is, jump ahead a bit */ ticks = 1; sc->sc_initstate += 3; /* Next step --> 7 */ break; } /* * Download the Basic Functionality firmware. */ p = ISES_STAT_IDP_STATE(READ_REG(sc, ISES_A_STAT)); if (p == ISES_IDP_WFPL) { /* We're ready to download. */ ticks = 1; sc->sc_initstate += 2; /* Next step --> 6 */ break; } /* * Prior to downloading we need to reset the NSRAM. * Setting the tamper bit will erase the contents * in 1 microsecond. */ stat = READ_REG(sc, ISES_BO_STAT); stat |= ISES_BO_STAT_TAMPER; WRITE_REG(sc, ISES_BO_STAT, stat); ticks = 1; break; case 4: /* After tamper bit has been set, powerdown chip. */ stat = READ_REG(sc, ISES_BO_STAT); stat |= ISES_BO_STAT_POWERDOWN; WRITE_REG(sc, ISES_BO_STAT, stat); /* Wait one second for power to dissipate. */ break; case 5: /* Clear tamper and powerdown bits. */ stat = READ_REG(sc, ISES_BO_STAT); stat &= ~(ISES_BO_STAT_TAMPER | ISES_BO_STAT_POWERDOWN); WRITE_REG(sc, ISES_BO_STAT, stat); /* Again we need to wait a second for selftests. */ break; case 6: /* * We'll need some space in the input queue (IQF) * and we need to be in the 'waiting for program * length' IDP state (0x4). */ p = ISES_STAT_IDP_STATE(READ_REG(sc, ISES_A_STAT)); if (READ_REG(sc, ISES_A_IQF) < 4 || p != ISES_IDP_WFPL) { if (retry_count++ < ISES_MAX_DOWNLOAD_RETRIES) { /* Retry download. */ sc->sc_initstate -= 5; /* Next step --> 2 */ ticks = 1; break; } retry_count = 0; printf("%s: cannot download firmware, " "IDP state is \"%s\"\n", dv, ises_idp_state[p]); return; } /* Write firmware length */ WRITE_REG(sc, ISES_A_IQD, ISES_BF_IDPLEN); /* Write firmware code */ for (p = 0; p < sizeof(ises_bf_fw)/sizeof(u_int32_t); p++) { WRITE_REG(sc, ISES_A_IQD, ises_bf_fw[p]); if (READ_REG(sc, ISES_A_IQF) < 4) DELAY(10); } /* Write firmware CRC */ WRITE_REG(sc, ISES_A_IQD, ISES_BF_IDPCRC); /* Wait 1s while chip resets and runs selftests */ break; case 7: /* Did the download succed? */ if (READ_REG(sc, ISES_A_STAT) & ISES_STAT_HW_DA) { ticks = 1; break; } /* We failed. */ goto fail; case 8: if (ises_assert_cmd_mode(sc) < 0) goto fail; /* * Now that the basic functionality firmware should be * up and running, try to get the firmware version. */ stat = ises_get_fwversion(sc); if (stat == 0) goto fail; printf("%s: firmware v%d.%d loaded (%d bytes)", dv, stat & 0xffff, (stat >> 16) & 0xffff, ISES_BF_IDPLEN << 2); /* We can use firmware versions 1.x & 2.x */ switch (stat & 0xffff) { case 0: printf(" diagnostic, %s disabled\n", dv); goto fail; case 1: /* Basic Func "base" firmware */ case 2: /* Basic Func "ipsec" firmware, no ADP code */ break; default: printf(" unknown, %s disabled\n", dv); goto fail; } stat = READ_REG(sc, ISES_A_STAT); DPRINTF((", mode %s", ises_sw_mode[ISES_STAT_SW_MODE(stat)])); /* Reuse the timeout for HRNG entropy collection. */ timeout_del(&sc->sc_timeout); ises_hrng_init(sc); /* Set the interrupt mask */ sc->sc_intrmask = ISES_STAT_BCHU_OAF | ISES_STAT_BCHU_ERR | ISES_STAT_BCHU_OFHF | ISES_STAT_SW_OQSINC | ISES_STAT_LNAU_BUSY_1 | ISES_STAT_LNAU_ERR_1 | ISES_STAT_LNAU_BUSY_2 | ISES_STAT_LNAU_ERR_2; #if 0 ISES_STAT_BCHU_ERR | ISES_STAT_BCHU_OAF | ISES_STAT_BCHU_IFE | ISES_STAT_BCHU_IFHE | ISES_STAT_BCHU_OFHF | ISES_STAT_BCHU_OFF; #endif WRITE_REG(sc, ISES_A_INTE, sc->sc_intrmask); /* We're done. */ printf("\n"); /* Register ourselves with crypto framework. */ p = crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0, ises_newsession, ises_freesession, ises_process); p |= crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0, NULL, NULL, NULL); p |= crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0, NULL, NULL, NULL); p |= crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0, NULL, NULL, NULL); p |= crypto_register(sc->sc_cid, CRYPTO_RIPEMD160_HMAC, 0, 0, NULL, NULL, NULL); if (p) printf("%s: could not register all algorithms\n", dv); return; default: printf("%s: entered unknown initstate %d\n", dv, sc->sc_initstate); goto fail; } /* Increment state counter and schedule next step in 'ticks' ticks. */ sc->sc_initstate++; timeout_add(&sc->sc_timeout, ticks); return; fail: printf("%s: firmware failure\n", dv); timeout_del(&sc->sc_timeout); return; } /* Put a command on the A-interface queue. */ int ises_queue_cmd(struct ises_softc *sc, u_int32_t cmd, u_int32_t *data, u_int32_t (*callback)(struct ises_softc *, struct ises_cmd *)) { struct ises_cmd *cq; int p, len, s, code; len = cmd >> 24; code = (cmd >> 16) & 0xFF; #ifdef ISESDEBUG if (code != ISES_CMD_HBITS) /* ... since this happens 100 times/s */ DPRINTF(("%s: queueing cmd 0x%x len %d\n", sc->sc_dv.dv_xname, code, len)); #endif s = splnet(); if (len > READ_REG(sc, ISES_A_IQF)) { splx(s); return (EAGAIN); /* XXX ENOMEM ? */ } cq = (struct ises_cmd *) malloc(sizeof (struct ises_cmd), M_DEVBUF, M_NOWAIT); if (cq == NULL) { splx(s); isesstats.nomem++; return (ENOMEM); } bzero(cq, sizeof (struct ises_cmd)); cq->cmd_code = code; cq->cmd_cb = callback; cq->cmd_session = sc->sc_cursession; SIMPLEQ_INSERT_TAIL(&sc->sc_cmdq, cq, cmd_next); WRITE_REG(sc, ISES_A_IQD, cmd); /* LNAU register data should be written in reverse order */ if ((code >= ISES_CMD_LW_A_1 && code <= ISES_CMD_LW_U_1) || /* LNAU1 */ (code >= ISES_CMD_LW_A_2 && code <= ISES_CMD_LW_U_2)) /* LNAU2 */ for (p = len - 1; p >= 0; p--) WRITE_REG(sc, ISES_A_IQD, *(data + p)); else for (p = 0; p < len; p++) WRITE_REG(sc, ISES_A_IQD, *(data + p)); /* Signal 'command ready'. */ WRITE_REG(sc, ISES_A_IQS, 0); splx(s); return (0); } /* Process all completed responses in the output queue. */ void ises_process_oqueue(struct ises_softc *sc) { #ifdef ISESDEBUG char *dv = sc->sc_dv.dv_xname; #endif struct ises_cmd *cq; struct ises_session *ses; u_int32_t oqs, r, d; int cmd, len, c, s; r = READ_REG(sc, ISES_A_OQS); if (r > 1) DPRINTF(("%s:process_oqueue: OQS=%d\n", dv, r)); /* OQS gives us the number of responses we have to process. */ while ((oqs = READ_REG(sc, ISES_A_OQS)) > 0) { /* Read command response. [ len(8) | cmd(8) | rc(16) ] */ r = READ_REG(sc, ISES_A_OQD); len = (r >> 24); cmd = (r >> 16) & 0xff; r = r & 0xffff; s = splnet(); if (!SIMPLEQ_EMPTY(&sc->sc_cmdq)) { cq = SIMPLEQ_FIRST(&sc->sc_cmdq); SIMPLEQ_REMOVE_HEAD(&sc->sc_cmdq, cq, cmd_next); cq->cmd_rlen = len; } else { cq = NULL; DPRINTF(("%s:process_oqueue: cmd queue empty!\n", dv)); } splx(s); if (r) { /* Ouch. This command generated an error */ DPRINTF(("%s:process_oqueue: cmd 0x%x err %d\n", dv, cmd, (r & ISES_RC_MASK))); /* Abort any running session switch to force a retry.*/ sc->sc_switching = 0; /* Return to CMD mode. This will reset all queues. */ (void)ises_assert_cmd_mode(sc); } else { /* Use specified callback, if any */ if (cq && cq->cmd_cb) { if (cmd == cq->cmd_code) { cq->cmd_cb(sc, cq); cmd = ISES_CMD_NONE; } else { DPRINTF(("%s:process_oqueue: expected" " cmd 0x%x, got 0x%x\n", dv, cq->cmd_code, cmd)); /* XXX Some error handling here? */ } } switch (cmd) { case ISES_CMD_NONE: break; case ISES_CMD_HBITS: /* XXX How about increasing the pool size? */ /* XXX Use add_entropy_words instead? */ /* XXX ... at proper spl */ /* Cmd generated by ises_rng() via timeouts */ while (len--) { d = READ_REG(sc, ISES_A_OQD); add_true_randomness(d); } break; case ISES_CMD_LUPLOAD_1: /* Get result of LNAU 1 operation. */ DPRINTF(("%s:process_oqueue: LNAU 1 result " "upload (len=%d)\n", dv, len)); sc->sc_lnau1_rlen = len; bzero(sc->sc_lnau1_r, 2048 / 8); while (len--) { /* first word is LSW */ sc->sc_lnau1_r[len] = READ_REG(sc, ISES_A_OQD); } break; case ISES_CMD_LUPLOAD_2: /* Get result of LNAU 1 operation. */ DPRINTF(("%s:process_oqueue: LNAU 2 result " "upload (len=%d)\n", dv, len)); sc->sc_lnau2_rlen = len; bzero(sc->sc_lnau1_r, 2048 / 8); while (len--) { /* first word is LSW */ sc->sc_lnau2_r[len] = READ_REG(sc, ISES_A_OQD); } break; case ISES_CMD_BR_OMR: ses = &sc->sc_sessions[cq->cmd_session]; ses->omr = READ_REG(sc, ISES_A_OQD); DPRINTF(("%s:process_oqueue: read OMR[%08x]\n", dv, ses->omr)); #ifdef ISESDEBUG ises_debug_parse_omr(sc); #endif break; case ISES_CMD_BSWITCH: /* XXX Currently BSWITCH does not work. */ DPRINTF(("%s:process_oqueue: BCHU_SWITCH\n")); /* Put switched BCHU session in cur session. */ ses = &sc->sc_sessions[cq->cmd_session]; for(c = 0; len > 0; len--, c++) #if 0 /* Don't store the key, just drain the data */ *((u_int32_t *)&ses + c) = #endif READ_REG(sc, ISES_A_OQD); sc->sc_switching = 0; ises_feed (sc); break; case ISES_CMD_BW_HMLR: /* XXX Obsoleted by ises_bchu_switch_final */ DPRINTF(("%s:process_oqueue: CMD_BW_HMLR !?\n", dv)); break; default: /* All other are ok (no response data) */ DPRINTF(("%s:process_oqueue cmd 0x%x len %d\n", dv, cmd, len)); if (cq && cq->cmd_cb) len -= cq->cmd_cb(sc, cq); } } if (cq) free(cq, M_DEVBUF); /* This will drain any remaining data and ACK this reponse. */ while (len-- > 0) d = READ_REG(sc, ISES_A_OQD); WRITE_REG(sc, ISES_A_OQS, 0); if (oqs > 1) DELAY(1); /* Wait for fw to decrement OQS (8 clocks) */ } } int ises_intr(void *arg) { struct ises_softc *sc = arg; u_int32_t ints, dma_status, cmd; char *dv = sc->sc_dv.dv_xname; dma_status = READ_REG(sc, ISES_DMA_STATUS); if (!(dma_status & (ISES_DMA_STATUS_R_ERR | ISES_DMA_STATUS_W_ERR))) { if ((sc->sc_dma_mask & ISES_DMA_STATUS_R_RUN) != 0 && (dma_status & ISES_DMA_STATUS_R_RUN) == 0) { DPRINTF(("%s: DMA read complete\n", dv)); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, BUS_DMASYNC_POSTREAD); /* XXX Pick up and return the data.*/ WRITE_REG(sc, ISES_DMA_RESET, 0); } if ((sc->sc_dma_mask & ISES_DMA_STATUS_W_RUN) != 0 && (dma_status & ISES_DMA_STATUS_W_RUN) == 0) { DPRINTF(("%s: DMA write complete\n", dv)); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, BUS_DMASYNC_POSTWRITE); WRITE_REG(sc, ISES_DMA_RESET, 0); ises_feed(sc); } } else { printf ("%s: DMA error\n", dv); WRITE_REG(sc, ISES_DMA_RESET, 0); } ints = READ_REG(sc, ISES_A_INTS); if (!(ints & sc->sc_intrmask)) { DPRINTF (("%s: other intr mask [%08x]\n", ints)); return (0); /* Not our interrupt. */ } /* Clear all set intr bits. */ WRITE_REG(sc, ISES_A_INTS, ints); #if 0 /* Check it we've got room for more data. */ if (READ_REG(sc, ISES_A_STAT) & (ISES_STAT_BCHU_IFE | ISES_STAT_BCHU_IFHE)) ises_feed(sc); #endif /* Does the A-intf output queue have data we need to process? */ if (ints & ISES_STAT_SW_OQSINC) ises_process_oqueue(sc); if (ints & ISES_STAT_LNAU_BUSY_1) { DPRINTF(("%s:ises_intr: LNAU 1 job complete\n", dv)); /* upload LNAU 1 result (into sc->sc_lnau1_r) */ cmd = ISES_MKCMD(ISES_CMD_LUPLOAD_1, 0); ises_queue_cmd(sc, cmd, NULL, NULL); } if (ints & ISES_STAT_LNAU_BUSY_2) { DPRINTF(("%s:ises_intr: LNAU 2 job complete\n", dv)); /* upload LNAU 2 result (into sc->sc_lnau2_r) */ cmd = ISES_MKCMD(ISES_CMD_LUPLOAD_2, 0); ises_queue_cmd(sc, cmd, NULL, NULL); } if (ints & ISES_STAT_LNAU_ERR_1) { DPRINTF(("%s:ises_intr: LNAU 1 error\n", dv)); sc->sc_lnau1_rlen = -1; } if (ints & ISES_STAT_LNAU_ERR_2) { DPRINTF(("%s:ises_intr: LNAU 2 error\n", dv)); sc->sc_lnau2_rlen = -1; } if (ints & ISES_STAT_BCHU_OAF) { /* output data available */ DPRINTF(("%s:ises_intr: BCHU_OAF bit set\n", dv)); /* Read DMA data from B-interface. */ ises_read_dma (sc); } if (ints & ISES_STAT_BCHU_ERR) { /* We got a BCHU error */ DPRINTF(("%s:ises_intr: BCHU error\n", dv)); /* XXX Error handling */ } if (ints & ISES_STAT_BCHU_OFHF) { /* Output is half full */ DPRINTF(("%s:ises_intr: BCHU output FIFO half full\n", dv)); /* XXX drain data? */ } #if 0 /* XXX Useful? */ if (ints & ISES_STAT_BCHU_OFF) { /* Output is full */ /* XXX drain data / error handling? */ } #endif return (1); } int ises_feed(struct ises_softc *sc) { struct ises_q *q; bus_dma_segment_t *ds = &sc->sc_dmamap->dm_segs[0]; u_int32_t dma_status; int s; #ifdef ISESDEBUG char *dv = sc->sc_dv.dv_xname; #endif DPRINTF(("%s:ises_feed: called (sc = %p)\n", dv, sc)); DELAY(1000000); s = splnet(); /* Anything to do? */ if (SIMPLEQ_EMPTY(&sc->sc_queue) || (READ_REG(sc, ISES_A_STAT) & ISES_STAT_BCHU_IFF)) { splx(s); return (0); } /* Pick the first */ q = SIMPLEQ_FIRST(&sc->sc_queue); splx(s); /* If we're currently switching sessions, we'll have to wait. */ if (sc->sc_switching != 0) { DPRINTF(("%s:ises_feed: waiting for session switch\n", dv)); return (0); } /* If on-chip data is not correct for this data, switch session. */ if (sc->sc_cursession != q->q_sesn) { /* Session switch required */ DPRINTF(("%s:ises_feed: initiating session switch\n", dv)); if (ises_bchu_switch_session (sc, &q->q_session, q->q_sesn)) sc->sc_cursession = q->q_sesn; else DPRINTF(("%s:ises_feed: session switch failed\n", dv)); return (0); } DPRINTF(("%s:ises_feed: feed to chip (q = %p)\n", dv, q)); DELAY(2000000); s = splnet(); SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q, q_next); SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next); --sc->sc_nqueue; splx(s); if (q->q_crp->crp_flags & CRYPTO_F_IMBUF) bus_dmamap_load_mbuf(sc->sc_dmat, sc->sc_dmamap, q->q_src.mbuf, BUS_DMA_NOWAIT); else if (q->q_crp->crp_flags & CRYPTO_F_IOV) bus_dmamap_load_uio(sc->sc_dmat, sc->sc_dmamap, q->q_src.uio, BUS_DMA_NOWAIT); /* ... else */ /* Start writing data to the ises. */ bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, BUS_DMASYNC_PREWRITE); DPRINTF(("%s:ises_feed: writing DMA\n", dv)); DELAY(1000000); sc->sc_dma_mask |= ISES_DMA_STATUS_W_RUN; WRITE_REG(sc, ISES_DMA_WRITE_START, ds->ds_addr); WRITE_REG(sc, ISES_DMA_WRITE_COUNT, ISES_DMA_WCOUNT(ds->ds_len)); dma_status = READ_REG(sc, ISES_DMA_STATUS); dma_status |= ISES_DMA_CTRL_ILT | ISES_DMA_CTRL_RLINE; WRITE_REG(sc, ISES_DMA_CTRL, dma_status); DPRINTF(("%s:ises_feed: done\n", dv)); return (0); } /* * 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. */ int ises_newsession(u_int32_t *sidp, struct cryptoini *cri) { struct cryptoini *c, *mac = NULL, *enc = NULL; struct ises_softc *sc = NULL; struct ises_session *ses; MD5_CTX md5ctx; SHA1_CTX sha1ctx; RMD160_CTX rmd160ctx; int i, sesn; #ifdef ISESDEBUG char *dv; #endif if (sidp == NULL || cri == NULL) return (EINVAL); for (i = 0; i < ises_cd.cd_ndevs; i++) { sc = ises_cd.cd_devs[i]; if (sc == NULL || sc->sc_cid == (*sidp)) break; } if (sc == NULL) return (EINVAL); #ifdef ISESDEBUG dv = sc->sc_dv.dv_xname; #endif DPRINTF(("%s:ises_newsession: start\n", dv)); 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_RIPEMD160_HMAC) { if (mac) return (EINVAL); mac = c; } else if (c->cri_alg == CRYPTO_DES_CBC || c->cri_alg == CRYPTO_3DES_CBC) { if (enc) return (EINVAL); enc = c; } else return (EINVAL); } if (mac == 0 && enc == 0) return (EINVAL); #ifdef ISESDEBUG printf ("%s:ises_newsession: mac=%p(%d) enc=%p(%d)\n", dv, mac, (mac ? mac->cri_alg : -1), enc, (enc ? enc->cri_alg : -1)); #endif /* Allocate a new session */ if (sc->sc_sessions == NULL) { ses = sc->sc_sessions = (struct ises_session *) malloc(sizeof(struct ises_session), M_DEVBUF, M_NOWAIT); if (ses == NULL) { isesstats.nomem++; return (ENOMEM); } sc->sc_cursession = -1; sesn = 0; sc->sc_nsessions = 1; } else { ses = NULL; for (sesn = 0; sesn < sc->sc_nsessions; sesn++) if (sc->sc_sessions[sesn].omr == 0) { ses = &sc->sc_sessions[sesn]; sc->sc_cursession = sesn; break; } if (ses == NULL) { i = sc->sc_nsessions * sizeof(struct ises_session); ses = (struct ises_session *) malloc(i + sizeof(struct ises_session), M_DEVBUF, M_NOWAIT); if (ses == NULL) { isesstats.nomem++; return (ENOMEM); } bcopy(sc->sc_sessions, ses, i); bzero(sc->sc_sessions, i); free(sc->sc_sessions, M_DEVBUF); sc->sc_sessions = ses; ses = &sc->sc_sessions[sc->sc_nsessions]; sc->sc_cursession = sc->sc_nsessions; sc->sc_nsessions++; } } DPRINTF(("%s:ises_newsession: nsessions=%d cursession=%d\n", dv, sc->sc_nsessions, sc->sc_cursession)); bzero(ses, sizeof(struct ises_session)); /* Select data path through B-interface. */ ses->omr |= ISES_SELR_BCHU_DIS; if (enc) { /* get an IV, network byte order */ /* XXX switch to using builtin HRNG ! */ get_random_bytes(ses->sccr, sizeof(ses->sccr)); /* crypto key */ if (enc->cri_alg == CRYPTO_DES_CBC) { bcopy(enc->cri_key, &ses->kr[0], 8); bcopy(enc->cri_key, &ses->kr[2], 8); bcopy(enc->cri_key, &ses->kr[4], 8); } else bcopy(enc->cri_key, &ses->kr[0], 24); SWAP32(ses->kr[0]); SWAP32(ses->kr[1]); SWAP32(ses->kr[2]); SWAP32(ses->kr[3]); SWAP32(ses->kr[4]); SWAP32(ses->kr[5]); } if (mac) { for (i = 0; i < mac->cri_klen / 8; i++) mac->cri_key[i] ^= HMAC_IPAD_VAL; switch (mac->cri_alg) { case CRYPTO_MD5_HMAC: MD5Init(&md5ctx); MD5Update(&md5ctx, mac->cri_key, mac->cri_klen / 8); MD5Update(&md5ctx, hmac_ipad_buffer, HMAC_BLOCK_LEN - (mac->cri_klen / 8)); MD5Final((u_int8_t *)&ses->cvr, &md5ctx); break; case CRYPTO_SHA1_HMAC: SHA1Init(&sha1ctx); SHA1Update(&sha1ctx, mac->cri_key, mac->cri_klen / 8); SHA1Update(&sha1ctx, hmac_ipad_buffer, HMAC_BLOCK_LEN - (mac->cri_klen / 8)); SHA1Final((u_int8_t *)ses->cvr, &sha1ctx); break; case CRYPTO_RIPEMD160_HMAC: default: RMD160Init(&rmd160ctx); RMD160Update(&rmd160ctx, mac->cri_key, mac->cri_klen / 8); RMD160Update(&rmd160ctx, hmac_ipad_buffer, HMAC_BLOCK_LEN - (mac->cri_klen / 8)); RMD160Final((u_int8_t *)ses->cvr, &rmd160ctx); break; } for (i = 0; i < mac->cri_klen / 8; i++) mac->cri_key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL); switch (mac->cri_alg) { case CRYPTO_MD5_HMAC: MD5Init(&md5ctx); MD5Update(&md5ctx, mac->cri_key, mac->cri_klen / 8); MD5Update(&md5ctx, hmac_opad_buffer, HMAC_BLOCK_LEN - (mac->cri_klen / 8)); MD5Update(&md5ctx, (u_int8_t *)ses->cvr, sizeof(md5ctx.state)); MD5Final((u_int8_t *)ses->cvr, &md5ctx); break; case CRYPTO_SHA1_HMAC: SHA1Init(&sha1ctx); SHA1Update(&sha1ctx, mac->cri_key, mac->cri_klen / 8); SHA1Update(&sha1ctx, hmac_opad_buffer, HMAC_BLOCK_LEN - (mac->cri_klen / 8)); SHA1Update(&sha1ctx, (u_int8_t *)ses->cvr, sizeof(sha1ctx.state)); SHA1Final((u_int8_t *)ses->cvr, &sha1ctx); break; case CRYPTO_RIPEMD160_HMAC: default: RMD160Init(&rmd160ctx); RMD160Update(&rmd160ctx, mac->cri_key, mac->cri_klen / 8); RMD160Update(&rmd160ctx, hmac_opad_buffer, HMAC_BLOCK_LEN - (mac->cri_klen / 8)); RMD160Update(&rmd160ctx, (u_int8_t *)ses->cvr, sizeof(rmd160ctx.state)); RMD160Final((u_int8_t *)ses->cvr, &rmd160ctx); break; } for (i = 0; i < mac->cri_klen / 8; i++) mac->cri_key[i] ^= HMAC_OPAD_VAL; } DPRINTF(("%s:ises_newsession: done\n", dv)); *sidp = ISES_SID(sc->sc_dv.dv_unit, sesn); return (0); } /* Deallocate a session. */ int ises_freesession(u_int64_t tsid) { struct ises_softc *sc; int card, sesn; u_int32_t sid = ((u_int32_t) tsid) & 0xffffffff; card = ISES_CARD(sid); if (card >= ises_cd.cd_ndevs || ises_cd.cd_devs[card] == NULL) return (EINVAL); sc = ises_cd.cd_devs[card]; sesn = ISES_SESSION(sid); DPRINTF(("%s:ises_freesession: freeing session %d\n", sc->sc_dv.dv_xname, sesn)); if (sc->sc_cursession == sesn) sc->sc_cursession = -1; bzero(&sc->sc_sessions[sesn], sizeof(sc->sc_sessions[sesn])); return (0); } /* Called by the crypto framework, crypto(9). */ int ises_process(struct cryptop *crp) { struct ises_softc *sc; struct ises_q *q; struct cryptodesc *maccrd, *enccrd, *crd; struct ises_session *ses; int card, s, err = EINVAL; int encoffset, macoffset, cpskip, sskip, dskip, stheend, dtheend; int cpoffset, coffset; #if 0 int nicealign; #endif #ifdef ISESDEBUG char *dv; #endif if (crp == NULL || crp->crp_callback == NULL) return (EINVAL); card = ISES_CARD(crp->crp_sid); if (card >= ises_cd.cd_ndevs || ises_cd.cd_devs[card] == NULL) goto errout; sc = ises_cd.cd_devs[card]; #ifdef ISESDEBUG dv = sc->sc_dv.dv_xname; #endif DPRINTF(("%s:ises_process: start (crp = %p)\n", dv, crp)); s = splnet(); if (sc->sc_nqueue == ISES_MAX_NQUEUE) { splx(s); goto memerr; } splx(s); q = (struct ises_q *)malloc(sizeof(struct ises_q), M_DEVBUF, M_NOWAIT); if (q == NULL) goto memerr; bzero(q, sizeof(struct ises_q)); q->q_sesn = ISES_SESSION(crp->crp_sid); ses = &sc->sc_sessions[q->q_sesn]; DPRINTF(("%s:ises_process: session %d selected\n", dv, q->q_sesn)); q->q_sc = sc; q->q_crp = crp; if (crp->crp_flags & CRYPTO_F_IMBUF) { q->q_src.mbuf = (struct mbuf *)crp->crp_buf; q->q_dst.mbuf = (struct mbuf *)crp->crp_buf; } else if (crp->crp_flags & CRYPTO_F_IOV) { q->q_src.uio = (struct uio *)crp->crp_buf; q->q_dst.uio = (struct uio *)crp->crp_buf; } else { /* XXX for now... */ goto errout; } /* * Check if the crypto descriptors are sane. We accept: * - just one crd; either auth or crypto * - two crds; must be one auth and one crypto, although now * for encryption we only want the first to be crypto, while * for decryption the second one should be crypto. */ maccrd = enccrd = NULL; for (crd = crp->crp_desc; crd; crd = crd->crd_next) { switch (crd->crd_alg) { case CRYPTO_MD5_HMAC: case CRYPTO_SHA1_HMAC: case CRYPTO_RIPEMD160_HMAC: if (maccrd || (enccrd && (enccrd->crd_flags & CRD_F_ENCRYPT) == 0)) goto errout; maccrd = crd; break; case CRYPTO_DES_CBC: case CRYPTO_3DES_CBC: if (enccrd || (maccrd && (crd->crd_flags & CRD_F_ENCRYPT))) goto errout; enccrd = crd; break; default: goto errout; } } if (!maccrd && !enccrd) goto errout; DPRINTF(("%s:ises_process: enc=%p mac=%p\n", dv, enccrd, maccrd)); /* Select data path through B-interface. */ q->q_session.omr |= ISES_SELR_BCHU_DIS; if (enccrd) { encoffset = enccrd->crd_skip; /* Select algorithm */ if (enccrd->crd_alg == CRYPTO_3DES_CBC) q->q_session.omr |= ISES_SOMR_BOMR_3DES; else q->q_session.omr |= ISES_SOMR_BOMR_DES; /* Set CBC mode */ q->q_session.omr |= ISES_SOMR_FMR_CBC; if (enccrd->crd_flags & CRD_F_ENCRYPT) { /* Set encryption bit */ q->q_session.omr |= ISES_SOMR_EDR; if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) bcopy(enccrd->crd_iv, q->q_session.sccr, 8); else { q->q_session.sccr[0] = ses->sccr[0]; q->q_session.sccr[1] = ses->sccr[1]; } if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) { if (crp->crp_flags & CRYPTO_F_IMBUF) m_copyback(q->q_src.mbuf, enccrd->crd_inject, 8, (caddr_t)q->q_session.sccr); else if (crp->crp_flags & CRYPTO_F_IOV) cuio_copyback(q->q_src.uio, enccrd->crd_inject, 8, (caddr_t)q->q_session.sccr); /* XXX else ... */ } } else { /* Clear encryption bit == decrypt mode */ q->q_session.omr &= ~ISES_SOMR_EDR; if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) bcopy(enccrd->crd_iv, q->q_session.sccr, 8); else if (crp->crp_flags & CRYPTO_F_IMBUF) m_copydata(q->q_src.mbuf, enccrd->crd_inject, 8, (caddr_t)q->q_session.sccr); else if (crp->crp_flags & CRYPTO_F_IOV) cuio_copydata(q->q_src.uio, enccrd->crd_inject, 8, (caddr_t)q->q_session.sccr); /* XXX else ... */ } q->q_session.kr[0] = ses->kr[0]; q->q_session.kr[1] = ses->kr[1]; q->q_session.kr[2] = ses->kr[2]; q->q_session.kr[3] = ses->kr[3]; q->q_session.kr[4] = ses->kr[4]; q->q_session.kr[5] = ses->kr[5]; SWAP32(q->q_session.sccr[0]); SWAP32(q->q_session.sccr[1]); } if (maccrd) { macoffset = maccrd->crd_skip; /* Select algorithm */ switch (crd->crd_alg) { case CRYPTO_MD5_HMAC: q->q_session.omr |= ISES_HOMR_HFR_MD5; break; case CRYPTO_SHA1_HMAC: q->q_session.omr |= ISES_HOMR_HFR_SHA1; break; case CRYPTO_RIPEMD160_HMAC: default: q->q_session.omr |= ISES_HOMR_HFR_RMD160; break; } q->q_session.cvr[0] = ses->cvr[0]; q->q_session.cvr[1] = ses->cvr[1]; q->q_session.cvr[2] = ses->cvr[2]; q->q_session.cvr[3] = ses->cvr[3]; q->q_session.cvr[4] = ses->cvr[4]; } if (enccrd && maccrd) { /* XXX Check if ises handles differing end of auth/enc etc */ /* XXX For now, assume not (same as ubsec). */ if (((encoffset + enccrd->crd_len) != (macoffset + maccrd->crd_len)) || (enccrd->crd_skip < maccrd->crd_skip)) { goto errout; } sskip = maccrd->crd_skip; cpskip = dskip = enccrd->crd_skip; stheend = maccrd->crd_len; dtheend = enccrd->crd_len; coffset = cpskip - sskip; cpoffset = cpskip + dtheend; /* XXX DEBUG ? */ } else { cpskip = dskip = sskip = macoffset + encoffset; dtheend = enccrd ? enccrd->crd_len : maccrd->crd_len; stheend = dtheend; cpoffset = cpskip + dtheend; coffset = 0; } q->q_offset = coffset >> 2; #if 0 /* XXX not sure about this, in bus_dma context */ if (crp->crp_flags & CRYPTO_F_IMBUF) q->q_src_l = mbuf2pages(q->q_src.mbuf, &q->q_src_npa, q->q_src_packp, q->q_src_packl, 1, &nicealign); else if (crp->crp_flags & CRYPTO_F_IOV) q->q_src_l = iov2pages(q->q_src.uio, &q->q_src_npa, q->q_src_packp, q->q_src_packl, 1, &nicealign); /* XXX else */ DPRINTF(("%s:ises_process: foo2pages called!\n", dv)); if (q->q_src_l == 0) goto memerr; else if (q->q_src_l > 0xfffc) { err = EIO; goto errout; } /* XXX ... */ if (enccrd == NULL && maccrd != NULL) { /* XXX ... */ } else { if (!nicealign && (crp->crp_flags & CRYPTO_F_IOV)) { goto errout; } else if (!nicealign && (crp->crp_flags & CRYPTO_F_IMBUF)) { int totlen, len; struct mbuf *m, *top, **mp; totlen = q->q_dst_l = q->q_src_l; if (q->q_src.mbuf->m_flags & M_PKTHDR) { MGETHDR(m, M_DONTWAIT, MT_DATA); M_DUP_PKTHDR(m, q->q_src.mbuf); len = MHLEN; } else { MGET(m, M_DONTWAIT, MT_DATA); len = MLEN; } if (m == NULL) goto memerr; if (totlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (m->m_flags & M_EXT) len = MCLBYTES; } m->m_len = len; top = NULL; mp = ⊤ while (totlen > 0) { if (top) { MGET(m, M_DONTWAIT, MT_DATA); if (m == NULL) { m_freem(top); goto memerr; } len = MLEN; } if (top && totlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (m->m_flags & M_EXT) len = MCLBYTES; } m->m_len = len = min(totlen, len); totlen -= len; *mp = m; mp = &m->m_next; } q->q_dst.mbuf = top; #if notyet ubsec_mcopy(q->q_src.mbuf, q->q_dst.mbuf, cpskip, cpoffset); #endif } else q->q_dst.mbuf = q->q_src.mbuf; #if 0 /* XXX ? */ q->q_dst_l = mbuf2pages(q->q_dst.mbuf, &q->q_dst_npa, &q->q_dst_packp, &q->q_dst_packl, 1, NULL); #endif } #endif /* XXX */ DPRINTF(("%s:ises_process: queueing request\n", dv)); s = splnet(); SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next); sc->sc_nqueue++; splx(s); ises_feed(sc); return (0); memerr: err = ENOMEM; isesstats.nomem++; errout: DPRINTF(("%s:ises_process: an error occurred, err=%d, q=%p\n", dv, err, q)); if (err == EINVAL) isesstats.invalid++; if (q) { if (q->q_src.mbuf != q->q_dst.mbuf) m_freem(q->q_dst.mbuf); free(q, M_DEVBUF); } crp->crp_etype = err; crp->crp_callback(crp); return (0); } void ises_callback(struct ises_q *q) { struct cryptop *crp = (struct cryptop *)q->q_crp; struct cryptodesc *crd; struct ises_softc *sc = q->q_sc; u_int8_t *sccr; if ((crp->crp_flags & CRYPTO_F_IMBUF) && (q->q_src.mbuf != q->q_dst.mbuf)) { m_freem(q->q_src.mbuf); crp->crp_buf = (caddr_t)q->q_dst.mbuf; } if (q->q_session.omr & ISES_SOMR_EDR) { /* Copy out IV after encryption. */ sccr = (u_int8_t *)&sc->sc_sessions[q->q_sesn].sccr; for (crd = crp->crp_desc; crd; crd = crd->crd_next) { if (crd->crd_alg != CRYPTO_DES_CBC && crd->crd_alg != CRYPTO_3DES_CBC) continue; if (crp->crp_flags & CRYPTO_F_IMBUF) m_copydata((struct mbuf *)crp->crp_buf, crd->crd_skip + crd->crd_len - 8, 8, sccr); else if (crp->crp_flags & CRYPTO_F_IOV) cuio_copydata((struct uio *)crp->crp_buf, crd->crd_skip + crd->crd_len - 8, 8, sccr); } } 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_RIPEMD160_HMAC) continue; if (crp->crp_flags & CRYPTO_F_IMBUF) m_copyback((struct mbuf *)crp->crp_buf, crd->crd_inject, 12, (u_int8_t *)q->q_macbuf); else if (crp->crp_flags & CRYPTO_F_IOV) bcopy((u_int8_t *)q->q_macbuf, crp->crp_mac, 12); /* XXX else ... */ break; } free(q, M_DEVBUF); DPRINTF(("%s:ises_callback: calling crypto_done\n", sc->sc_dv.dv_xname)); crypto_done(crp); } /* Initilize the ISES hardware RNG, and set up timeouts. */ void ises_hrng_init(struct ises_softc *sc) { u_int32_t cmd, r; int i; #ifdef ISESDEBUG struct timeval tv1, tv2; #endif /* Asking for random data will seed LFSR and start the RBG */ cmd = ISES_MKCMD(ISES_CMD_HBITS, 1); r = 8; /* 8 * 32 = 256 bits */ if (ises_queue_cmd(sc, cmd, &r, NULL)) return; /* Wait until response arrives. */ for (i = 1000; i && READ_REG(sc, ISES_A_OQS) == 0; i--) DELAY(10); if (!READ_REG(sc, ISES_A_OQS)) return; /* Drain cmd response and 8*32 bits data */ for (i = 0; i <= r; i++) (void)READ_REG(sc, ISES_A_OQD); /* ACK the response */ WRITE_REG(sc, ISES_A_OQS, 0); DELAY(1); printf(", rng active", sc->sc_dv.dv_xname); #ifdef ISESDEBUG /* Benchmark the HRNG. */ /* * XXX These values gets surprisingly large. Docs state the * HNRG produces > 1 mbit/s of random data. The values I'm seeing * are much higher, ca 2.7-2.8 mbit/s. AFAICT the algorithm is sound. * Compiler optimization issues, perhaps? */ #define ISES_WPR 250 #define ISES_ROUNDS 100 cmd = ISES_MKCMD(ISES_CMD_HBITS, 1); r = ISES_WPR; /* Queue 100 cmds; each generate 250 32-bit words of rnd data. */ microtime(&tv1); for (i = 0; i < ISES_ROUNDS; i++) ises_queue_cmd(sc, cmd, &r, NULL); for (i = 0; i < ISES_ROUNDS; i++) { while (READ_REG(sc, ISES_A_OQS) == 0) ; /* Wait for response */ (void)READ_REG(sc, ISES_A_OQD); /* read response */ for (r = ISES_WPR; r--;) (void)READ_REG(sc, ISES_A_OQD); /* read data */ WRITE_REG(sc, ISES_A_OQS, 0); /* ACK resp */ DELAY(1); /* OQS needs 1us to decrement */ } microtime(&tv2); timersub(&tv2, &tv1, &tv1); tv1.tv_usec += 1000000 * tv1.tv_sec; printf(", %dKb/sec", ISES_WPR * ISES_ROUNDS * 32 / 1024 * 1000000 / tv1.tv_usec); #endif timeout_set(&sc->sc_timeout, ises_hrng, sc); #ifndef ISES_HRNG_DISABLED ises_hrng(sc); /* Call first update */ #endif } /* Called by timeout (and once by ises_init_hrng()). */ void ises_hrng(void *v) { /* * Throw a HRNG read random bits command on the command queue. * The normal loop will manage the result and add it to the pool. */ struct ises_softc *sc = v; u_int32_t cmd, n; extern int hz; /* from param.c */ timeout_add(&sc->sc_timeout, hz / ISESRNGIPS); if (ises_assert_cmd_mode(sc) != 0) return; cmd = ISES_MKCMD(ISES_CMD_HBITS, 1); n = (ISESRNGBITS >> 5) & 0xff; /* ask for N 32 bit words */ ises_queue_cmd(sc, cmd, &n, NULL); } u_int32_t ises_get_fwversion(struct ises_softc *sc) { u_int32_t r; int i; r = ISES_MKCMD(ISES_CMD_CHIP_ID, 0); WRITE_REG(sc, ISES_A_IQD, r); WRITE_REG(sc, ISES_A_IQS, 0); for (i = 100; i > 0 && READ_REG(sc, ISES_A_OQS) == 0; i--) DELAY(1); if (i < 1) return (0); /* No response */ r = READ_REG(sc, ISES_A_OQD); /* Check validity. On error drain reponse data. */ if (((r >> 16) & 0xff) != ISES_CMD_CHIP_ID || ((r >> 24) & 0xff) != 3 || (r & ISES_RC_MASK) != ISES_RC_SUCCESS) { if ((r & ISES_RC_MASK) == ISES_RC_SUCCESS) for (i = ((r >> 24) & 0xff); i; i--) (void)READ_REG(sc, ISES_A_OQD); r = 0; goto out; } r = READ_REG(sc, ISES_A_OQD); /* read version */ (void)READ_REG(sc, ISES_A_OQD); /* Discard 64bit "chip-id" */ (void)READ_REG(sc, ISES_A_OQD); out: WRITE_REG(sc, ISES_A_OQS, 0); /* Ack the response */ DELAY(1); return (r); } /* * ises_assert_cmd_mode() returns * -1 for failure to go to cmd * 0 if mode already was cmd * >0 if mode was other (WFC/WFR) but now is cmd (this has reset the queues) */ int ises_assert_cmd_mode(struct ises_softc *sc) { switch (ISES_STAT_SW_MODE(READ_REG(sc, ISES_A_STAT))) { case 0x0: /* Selftest. XXX This is a transient state. */ DELAY(1000000); if (ISES_STAT_SW_MODE(READ_REG(sc, ISES_A_STAT)) == 0) return (-1); return (ises_assert_cmd_mode(sc)); case 0x1: /* Command mode */ return (0); case 0x2: /* Waiting For Continue / WFC */ bus_space_write_2(sc->sc_memt, sc->sc_memh, ISES_A_CTRL, ISES_A_CTRL_CONTINUE); DELAY(1); return ((ISES_STAT_SW_MODE(READ_REG(sc, ISES_A_STAT)) == 0) ? 1 : -1); case 0x3: /* Waiting For Reset / WFR */ bus_space_write_2(sc->sc_memt, sc->sc_memh, ISES_A_CTRL, ISES_A_CTRL_RESET); DELAY(1000000); return ((ISES_STAT_SW_MODE(READ_REG(sc, ISES_A_STAT)) == 0) ? 2 : -1); default: return (-1); /* Unknown mode */ } } int ises_bchu_switch_session (struct ises_softc *sc, struct ises_session *ss, int new_session) { /* It appears that the BCHU_SWITCH_SESSION command is broken. */ /* We have to work around it. */ u_int32_t cmd; /* Do we have enough in-queue space? Count cmds + data, 16bit words. */ if ((8 * 2 + sizeof (*ss) / 2) > READ_REG(sc, ISES_A_IQF)) return (0); /* Mark 'switch' in progress. */ sc->sc_switching = new_session + 1; /* Write the key. */ cmd = ISES_MKCMD(ISES_CMD_BW_KR0, 2); ises_queue_cmd(sc, cmd, &ss->kr[4], NULL); cmd = ISES_MKCMD(ISES_CMD_BW_KR1, 2); ises_queue_cmd(sc, cmd, &ss->kr[2], NULL); cmd = ISES_MKCMD(ISES_CMD_BW_KR2, 2); ises_queue_cmd(sc, cmd, &ss->kr[0], NULL); /* Write OMR - Operation Method Register, clears SCCR+CVR+DBCR+HMLR */ cmd = ISES_MKCMD(ISES_CMD_BW_OMR, 1); ises_queue_cmd(sc, cmd, &ss->omr, NULL); /* Write SCCR - Symmetric Crypto Chaining Register (IV) */ cmd = ISES_MKCMD(ISES_CMD_BW_SCCR, 2); ises_queue_cmd(sc, cmd, &ss->sccr[0], NULL); /* Write CVR - Chaining Variables Register (hash state) */ cmd = ISES_MKCMD(ISES_CMD_BW_CVR, 5); ises_queue_cmd(sc, cmd, &ss->cvr[0], NULL); /* Write DBCR - Data Block Count Register */ cmd = ISES_MKCMD(ISES_CMD_BW_DBCR, 2); ises_queue_cmd(sc, cmd, &ss->dbcr[0], NULL); /* Write HMLR - Hash Message Length Register - last cmd in switch */ cmd = ISES_MKCMD(ISES_CMD_BW_HMLR, 2); ises_queue_cmd(sc, cmd, &ss->hmlr[0], ises_bchu_switch_final); return (1); } u_int32_t ises_bchu_switch_final (struct ises_softc *sc, struct ises_cmd *cmd) { /* Session switch is complete. */ DPRINTF(("%s:ises_bchu_switch_final: switch complete\n", sc->sc_dv.dv_xname)); sc->sc_cursession = sc->sc_switching - 1; sc->sc_switching = 0; /* Retry/restart feed. */ ises_feed(sc); return (0); } /* XXX Currently unused. */ void ises_read_dma (struct ises_softc *sc) { bus_dma_segment_t *ds = &sc->sc_dmamap->dm_segs[0]; u_int32_t dma_status; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, BUS_DMASYNC_PREREAD); WRITE_REG(sc, ISES_DMA_READ_START, ds->ds_addr); WRITE_REG(sc, ISES_DMA_READ_START, ISES_DMA_RCOUNT(ds->ds_len)); dma_status = READ_REG(sc, ISES_DMA_STATUS); dma_status |= ISES_DMA_CTRL_ILT | ISES_DMA_CTRL_WRITE; WRITE_REG(sc, ISES_DMA_CTRL, dma_status); } #ifdef ISESDEBUG /* * Development code section below here. */ void ises_debug_init (struct ises_softc *sc) { ises_sc = sc; ises_db = 0; timeout_set (&ises_db_timeout, ises_debug_loop, sc); timeout_add (&ises_db_timeout, 100); printf ("ises0: ISESDEBUG active (ises_sc = %p)\n", ises_sc); } void ises_debug_2 (void) { timeout_set (&ises_db_timeout, ises_debug_loop, ises_sc); timeout_add (&ises_db_timeout, 100); printf ("ises0: another debug timeout scheduled!\n"); } void ises_debug_simple_cmd (struct ises_softc *sc, u_int32_t code, u_int32_t d) { u_int32_t cmd, data; cmd = ISES_MKCMD(code, (d ? 1 : 0)); data = d; ises_queue_cmd(sc, cmd, &d, NULL); } void ises_debug_loop (void *v) { struct ises_softc *sc = (struct ises_softc *)v; struct ises_session ses; u_int32_t cmd, stat; int i; if (ises_db) printf ("ises0: ises_db = %d sc = %p\n", ises_db, sc); timeout_add (&ises_db_timeout, 300); /* Every 3 secs */ stat = READ_REG(sc, ISES_A_OQS); cmd = READ_REG(sc, ISES_A_IQS); if (stat || cmd) printf ("ises0: IQS=%d OQS=%d / IQF=%d OQF=%d\n", cmd, stat, READ_REG(sc, ISES_A_IQF), READ_REG(sc, ISES_A_OQF)); switch (ises_db) { default: /* 0 - do nothing (just loop) */ break; case 1: /* Just dump register info */ ises_showreg(); break; case 2: /* Reset LNAU 1 registers */ ises_debug_simple_cmd(sc, ISES_CMD_LRESET_1, 0); /* Compute R = (141 * 5623) % 117 (R should be 51 (0x33)) */ ises_debug_simple_cmd(sc, ISES_CMD_LW_A_1, 141); ises_debug_simple_cmd(sc, ISES_CMD_LW_B_1, 5623); ises_debug_simple_cmd(sc, ISES_CMD_LW_N_1, 117); /* Launch LNAU operation. */ ises_debug_simple_cmd(sc, ISES_CMD_LMULMOD_1, 0); break; case 3: /* Read result LNAU_1 R register (should not be necessary) */ ises_debug_simple_cmd(sc, ISES_CMD_LUPLOAD_1, 0); break; case 4: /* Print result */ printf ("LNAU_1 R length = %d\n", sc->sc_lnau1_rlen); for (i = 0; i < sc->sc_lnau1_rlen; i++) printf ("W%02d-[%08x]-(%u)\t%s", i, sc->sc_lnau1_r[i], sc->sc_lnau1_r[i], (i%4)==3 ? "\n" : ""); printf ("%s", (i%4) ? "\n" : ""); break; case 5: /* Crypto. */ /* Load BCHU session data */ bzero(&ses, sizeof ses); ses.kr[0] = 0xD0; ses.kr[1] = 0xD1; ses.kr[2] = 0xD2; ses.kr[3] = 0xD3; ses.kr[4] = 0xD4; ses.kr[5] = 0xD5; /* cipher data out is hash in, SHA1, 3DES, encrypt, ECB */ ses.omr = ISES_SELR_BCHU_HISOF | ISES_HOMR_HFR_SHA1 | ISES_SOMR_BOMR_3DES | ISES_SOMR_EDR | ISES_SOMR_FMR_ECB; #if 1 printf ("Queueing home-cooked session switch\n"); ises_bchu_switch_session(sc, &ses, 0); #else /* switch session does not appear to work - it never returns */ printf ("Queueing BCHU session switch\n"); cmd = ISES_MKCMD(ISES_CMD_BSWITCH, sizeof ses / 4); printf ("session is %d 32bit words (== 18 ?), cmd = [%08x]\n", sizeof ses / 4, cmd); ises_queue_cmd(sc, cmd, (u_int32_t *)&ses, NULL); #endif break; case 96: printf ("Stopping HRNG data collection\n"); timeout_del(&sc->sc_timeout); break; case 97: printf ("Restarting HRNG data collection\n"); if (!timeout_pending(&sc->sc_timeout)) timeout_add(&sc->sc_timeout, hz); break; case 98: printf ("Resetting (wait >1s before cont.)\n"); stat = ISES_BO_STAT_HWRESET; WRITE_REG(sc, ISES_BO_STAT, stat); stat &= ~ISES_BO_STAT_HWRESET; WRITE_REG(sc, ISES_BO_STAT, stat); break; case 99: printf ("Resetting everything!\n"); if (timeout_pending(&sc->sc_timeout)) timeout_del(&sc->sc_timeout); timeout_set(&sc->sc_timeout, ises_initstate, sc); sc->sc_initstate = 0; ises_initstate(sc); break; } ises_db = 0; } void ises_showreg (void) { struct ises_softc *sc = ises_sc; u_int32_t stat, cmd; /* Board register */ printf ("Board register: "); stat = READ_REG(sc, ISES_BO_STAT); if (stat & ISES_BO_STAT_LOOP) printf ("LoopMode "); if (stat & ISES_BO_STAT_TAMPER) printf ("Tamper "); if (stat & ISES_BO_STAT_POWERDOWN) printf ("PowerDown "); if (stat & ISES_BO_STAT_ACONF) printf ("16bitA-IF "); if (stat & ISES_BO_STAT_HWRESET) printf ("HWReset"); if (stat & ISES_BO_STAT_AIRQ) printf ("A-IFintr"); printf("\n"); /* A interface */ printf ("A Interface STAT register: \n\tLNAU-["); stat = READ_REG(sc, ISES_A_STAT); if (stat & ISES_STAT_LNAU_MASKED) printf ("masked"); else { if (stat & ISES_STAT_LNAU_BUSY_1) printf ("busy1 "); if (stat & ISES_STAT_LNAU_ERR_1) printf ("err1 "); if (stat & ISES_STAT_LNAU_BUSY_2) printf ("busy2 "); if (stat & ISES_STAT_LNAU_ERR_2) printf ("err2 "); } printf ("]\n\tBCHU-["); if (stat & ISES_STAT_BCHU_MASKED) printf ("masked"); else { if (stat & ISES_STAT_BCHU_BUSY) printf ("busy "); if (stat & ISES_STAT_BCHU_ERR) printf ("err "); if (stat & ISES_STAT_BCHU_SCIF) printf ("cr-inop "); if (stat & ISES_STAT_BCHU_HIF) printf ("ha-inop "); if (stat & ISES_STAT_BCHU_DDB) printf ("dscd-data "); if (stat & ISES_STAT_BCHU_IRF) printf ("inp-req "); if (stat & ISES_STAT_BCHU_OAF) printf ("out-avail "); if (stat & ISES_STAT_BCHU_DIE) printf ("inp-enabled "); if (stat & ISES_STAT_BCHU_UE) printf ("ififo-empty "); if (stat & ISES_STAT_BCHU_IFE) printf ("ififo-half "); if (stat & ISES_STAT_BCHU_IFHE) printf ("ififo-full "); if (stat & ISES_STAT_BCHU_OFE) printf ("ofifo-empty "); if (stat & ISES_STAT_BCHU_OFHF) printf ("ofifo-half "); if (stat & ISES_STAT_BCHU_OFF) printf ("ofifo-full "); } printf ("] \n\tmisc-["); if (stat & ISES_STAT_HW_DA) printf ("downloaded-appl "); if (stat & ISES_STAT_HW_ACONF) printf ("A-IF-conf "); if (stat & ISES_STAT_SW_WFOQ) printf ("OQ-wait "); if (stat & ISES_STAT_SW_OQSINC) printf ("OQS-increased "); printf ("]\n\t"); if (stat & ISES_STAT_HW_DA) printf ("SW-mode is \"%s\"", ises_sw_mode[ISES_STAT_SW_MODE(stat)]); else printf ("IDP-state is \"%s\"", ises_idp_state[ISES_STAT_IDP_STATE(stat)]); printf ("\n"); printf ("\tOQS = %d IQS = %d OQF = %d IQF = %d\n", READ_REG(sc, ISES_A_OQS), READ_REG(sc, ISES_A_IQS), READ_REG(sc, ISES_A_OQF), READ_REG(sc, ISES_A_IQF)); /* B interface */ printf ("B-interface status register contains [%08x]\n", READ_REG(sc, ISES_B_STAT)); /* DMA */ printf ("DMA read starts at 0x%x, length %d bytes\n", READ_REG(sc, ISES_DMA_READ_START), READ_REG(sc, ISES_DMA_READ_COUNT) >> 16); printf ("DMA write starts at 0x%x, length %d bytes\n", READ_REG(sc, ISES_DMA_WRITE_START), READ_REG(sc, ISES_DMA_WRITE_COUNT) & 0x00ff); stat = READ_REG(sc, ISES_DMA_STATUS); printf ("DMA status register contains [%08x]\n", stat); if (stat & ISES_DMA_CTRL_ILT) printf (" -- Ignore latency timer\n"); if (stat & 0x0C000000) printf (" -- PCI Read - multiple\n"); else if (stat & 0x08000000) printf (" -- PCI Read - line\n"); if (stat & ISES_DMA_STATUS_R_RUN) printf (" -- PCI Read running/incomplete\n"); else printf (" -- PCI Read complete\n"); if (stat & ISES_DMA_STATUS_R_ERR) printf (" -- PCI Read DMA Error\n"); if (stat & ISES_DMA_STATUS_W_RUN) printf (" -- PCI Write running/incomplete\n"); else printf (" -- PCI Write complete\n"); if (stat & ISES_DMA_STATUS_W_ERR) printf (" -- PCI Write DMA Error\n"); /* OMR / HOMR / SOMR */ /* * All these means throwing a cmd on to the A-interface, and then * reading the result. * * Currently, put debug output in process_oqueue... */ printf ("Queueing Operation Method Register (OMR) READ cmd...\n"); cmd = ISES_MKCMD(ISES_CMD_BR_OMR, 0); ises_queue_cmd(sc, cmd, NULL, NULL); } void ises_debug_parse_omr (struct ises_softc *sc) { u_int32_t omr = sc->sc_sessions[sc->sc_cursession].omr; printf ("SELR : "); if (omr & ISES_SELR_BCHU_EH) printf ("cont-on-error "); else printf ("stop-on-error "); if (omr & ISES_SELR_BCHU_HISOF) printf ("HU-input-is-SCU-output "); if (omr & ISES_SELR_BCHU_DIS) printf ("data-interface-select=B "); else printf ("data-interface-select=DataIn/DataOut "); printf ("\n"); printf ("HOMR : "); if (omr & ISES_HOMR_HMTR) printf ("expect-padded-hash-msg "); else printf ("expect-plaintext-hash-msg "); printf ("ER=%d ", (omr & ISES_HOMR_ER) >> 20); /* ick */ printf ("HFR="); switch (omr & ISES_HOMR_HFR) { case ISES_HOMR_HFR_NOP: printf ("inactive "); break; case ISES_HOMR_HFR_MD5: printf ("MD5 "); break; case ISES_HOMR_HFR_RMD160: printf ("RMD160 "); break; case ISES_HOMR_HFR_RMD128: printf ("RMD128 "); break; case ISES_HOMR_HFR_SHA1: printf ("SHA-1 "); break; default: printf ("reserved! "); break; } printf ("\nSOMR : "); switch (omr & ISES_SOMR_BOMR) { case ISES_SOMR_BOMR_NOP: printf ("NOP "); break; case ISES_SOMR_BOMR_TRANSPARENT: printf ("transparent "); break; case ISES_SOMR_BOMR_DES: printf ("DES "); break; case ISES_SOMR_BOMR_3DES2: printf ("3DES-2 "); break; case ISES_SOMR_BOMR_3DES: printf ("3DES-3 "); break; default: if (omr & ISES_SOMR_BOMR_SAFER) printf ("SAFER "); else printf ("reserved! "); break; } if (omr & ISES_SOMR_EDR) printf ("mode=encrypt "); else printf ("mode=decrypt "); switch (omr & ISES_SOMR_FMR) { case ISES_SOMR_FMR_ECB: printf ("ECB"); break; case ISES_SOMR_FMR_CBC: printf ("CBC"); break; case ISES_SOMR_FMR_CFB64: printf ("CFB64"); break; case ISES_SOMR_FMR_OFB64: printf ("OFB64"); break; default: /* Nada */ } printf ("\n"); } #endif /* ISESDEBUG */