/*- * SPDX-License-Identifier: BSD-4-Clause * * Copyright (c) 2003 Hidetoshi Shimokawa * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa * 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. All advertising materials mentioning features or use of this software * must display the acknowledgement as bellow: * * This product includes software developed by K. Kobayashi and H. Shimokawa * * 4. 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. */ #include #include #include #include #include #include #include #include #include #include #include #include /* used by smbus and newbus */ #include #include #include #include #include #include struct crom_src_buf { struct crom_src src; struct crom_chunk root; struct crom_chunk vendor; struct crom_chunk hw; }; int firewire_debug = 0, try_bmr = 1, hold_count = 0; SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0, "FireWire driver debug flag"); SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "FireWire Subsystem"); SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0, "Try to be a bus manager"); SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0, "Number of count of bus resets for removing lost device information"); MALLOC_DEFINE(M_FW, "firewire", "FireWire"); MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire"); #define FW_MAXASYRTY 4 /* Split timeout: 800 cycles (see IEEE 1394-1995 8.3.2.2.2) */ #define FW_SPLIT_TIMEOUT_CYCLES 800 /* Default available isochronous bandwidth units (IEEE 1394-1995 Table 8-4) */ #define FW_BANDWIDTH_AVAILABLE 4915 /* ROM header size in quads: bus info block (4) + CRC quad (1) */ #define FW_ROM_HEADER_QUADS 5 /* Maximum retries when exploring a remote node's CSR ROM */ #define FW_EXPLORE_MAX_RETRIES 3 /* maxrec value encoding 512-byte payload (2^(maxrec+1) = 512 => maxrec=8) */ #define FW_MAXREC_512 8 /* PHY configuration packet bit fields (IEEE 1394-1995 4.3.4.1) */ #define FW_PHY_ROOT_BIT (1 << 23) #define FW_PHY_ROOT_SHIFT 24 #define FW_PHY_GAP_BIT (1 << 22) #define FW_PHY_GAP_SHIFT 16 devclass_t firewire_devclass; static void firewire_identify(driver_t *, device_t); static int firewire_probe(device_t); static int firewire_attach(device_t); static int firewire_detach(device_t); static int firewire_resume(device_t); static void firewire_xfer_timeout(void *, int); static device_t firewire_add_child(device_t, u_int, const char *, int); static void firewire_child_deleted(device_t, device_t); static void fw_try_bmr(void *); static void fw_try_bmr_callback(struct fw_xfer *); static void fw_asystart(struct fw_xfer *); static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); static void fw_bus_probe(void *); static void fw_attach_dev(struct firewire_comm *); static void fw_parse_units(struct fw_device *); static void fw_create_unit_children(struct firewire_comm *, struct fw_device *); static int fw_remove_unit_children(struct firewire_comm *, struct fw_device *); static void fw_bus_probe_thread(void *); #ifdef FW_VMACCESS static void fw_vmaccess (struct fw_xfer *); #endif static int fw_bmr (struct firewire_comm *); static void fw_dump_hdr(struct fw_pkt *, char *); static device_method_t firewire_methods[] = { /* Device interface */ DEVMETHOD(device_identify, firewire_identify), DEVMETHOD(device_probe, firewire_probe), DEVMETHOD(device_attach, firewire_attach), DEVMETHOD(device_detach, firewire_detach), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, firewire_resume), DEVMETHOD(device_shutdown, bus_generic_shutdown), /* Bus interface */ DEVMETHOD(bus_add_child, firewire_add_child), DEVMETHOD(bus_child_deleted, firewire_child_deleted), DEVMETHOD_END }; char *linkspeed[] = { "S100", "S200", "S400", "S800", "S1600", "S3200", "undef", "undef" }; static char *tcode_str[] = { "WREQQ", "WREQB", "WRES", "undef", "RREQQ", "RREQB", "RRESQ", "RRESB", "CYCS", "LREQ", "STREAM", "LRES", "undef", "undef", "PHY", "undef" }; /* IEEE-1394a Table C-2 Gap count as a function of hops*/ #define MAX_GAPHOP 15 u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 21, 24, 26, 29, 32, 35, 37, 40}; static driver_t firewire_driver = { "firewire", firewire_methods, sizeof(struct firewire_softc), }; /* * Lookup fwdev by node id. */ struct fw_device * fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) { struct fw_device *fwdev; FW_GLOCK(fc); STAILQ_FOREACH(fwdev, &fc->devices, link) if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) break; FW_GUNLOCK(fc); return fwdev; } /* * Lookup fwdev by EUI64. */ struct fw_device * fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) { struct fw_device *fwdev; FW_GLOCK(fc); STAILQ_FOREACH(fwdev, &fc->devices, link) if (FW_EUI64_EQUAL(fwdev->eui, *eui)) break; FW_GUNLOCK(fc); if (fwdev == NULL) return NULL; if (fwdev->status == FWDEVINVAL) return NULL; return fwdev; } /* * Async. request procedure for userland application. */ int fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) { int err = 0; struct fw_xferq *xferq; int len; struct fw_pkt *fp; int tcode; struct tcode_info *info; if (xfer == NULL) return EINVAL; if (xfer->hand == NULL) { printf("hand == NULL\n"); return EINVAL; } fp = &xfer->send.hdr; tcode = fp->mode.common.tcode & 0xf; info = &fc->tcode[tcode]; if (info->flag == 0) { printf("invalid tcode=%x\n", tcode); return EINVAL; } /* Reject non-CSR transactions until bus exploration completes */ if ((fc->status < FWBUSEXPLORE) && ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || (fp->mode.rreqq.dest_lo < 0xf0000000) || (fp->mode.rreqq.dest_lo >= 0xf0001000))) { xfer->resp = EAGAIN; xfer->flag = FWXF_BUSY; return (EAGAIN); } if (info->flag & FWTI_REQ) xferq = fc->atq; else xferq = fc->ats; len = info->hdr_len; if (xfer->send.pay_len > MAXREC(fc->maxrec)) { printf("send.pay_len > maxrec\n"); return EINVAL; } if (info->flag & FWTI_BLOCK_STR) len = fp->mode.stream.len; else if (info->flag & FWTI_BLOCK_ASY) len = fp->mode.rresb.len; else len = 0; if (len != xfer->send.pay_len) { printf("len(%d) != send.pay_len(%d) %s(%x)\n", len, xfer->send.pay_len, tcode_str[tcode], tcode); return EINVAL; } if (xferq->start == NULL) { printf("xferq->start == NULL\n"); return EINVAL; } if (!(xferq->queued < xferq->maxq)) { device_printf(fc->bdev, "Discard a packet (queued=%d)\n", xferq->queued); return EAGAIN; } xfer->tl = -1; if (info->flag & FWTI_TLABEL) { if (fw_get_tlabel(fc, xfer) < 0) return EAGAIN; } xfer->resp = 0; xfer->fc = fc; xfer->q = xferq; fw_asystart(xfer); return err; } /* * Wakeup blocked process. */ void fw_xferwake(struct fw_xfer *xfer) { struct mtx *lock = &xfer->fc->wait_lock; mtx_lock(lock); xfer->flag |= FWXF_WAKE; mtx_unlock(lock); wakeup(xfer); return; } int fw_xferwait(struct fw_xfer *xfer) { struct mtx *lock = &xfer->fc->wait_lock; int err = 0; mtx_lock(lock); while ((xfer->flag & FWXF_WAKE) == 0) err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); mtx_unlock(lock); return (err); } /* * Async. request with given xfer structure. */ static void fw_asystart(struct fw_xfer *xfer) { struct firewire_comm *fc = xfer->fc; /* Protect from interrupt/timeout */ FW_GLOCK(fc); xfer->flag = FWXF_INQ; STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); FW_GUNLOCK(fc); /* Kick DMA for non-mbuf xfers */ if (xfer->mbuf == NULL) xfer->q->start(fc); return; } static void firewire_identify(driver_t *driver, device_t parent) { BUS_ADD_CHILD(parent, 0, "firewire", DEVICE_UNIT_ANY); } static int firewire_probe(device_t dev) { device_set_desc(dev, "IEEE1394(FireWire) bus"); return (0); } /* Just use a per-packet callout? */ static void firewire_xfer_timeout(void *arg, int pending) { struct firewire_comm *fc = (struct firewire_comm *)arg; struct fw_xfer *xfer, *txfer; struct timeval tv; struct timeval split_timeout; STAILQ_HEAD(, fw_xfer) xfer_timeout; int i; split_timeout.tv_sec = 0; split_timeout.tv_usec = 200 * 1000; /* 200 msec */ microtime(&tv); timevalsub(&tv, &split_timeout); STAILQ_INIT(&xfer_timeout); mtx_lock(&fc->tlabel_lock); for (i = 0; i < nitems(fc->tlabels); i++) { while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { if ((xfer->flag & FWXF_SENT) == 0) /* not sent yet */ break; if (timevalcmp(&xfer->tv, &tv, >)) /* the rests are newer than this */ break; device_printf(fc->bdev, "split transaction timeout: tl=0x%x flag=0x%02x\n", i, xfer->flag); fw_dump_hdr(&xfer->send.hdr, "send"); xfer->resp = ETIMEDOUT; xfer->tl = -1; STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); } } mtx_unlock(&fc->tlabel_lock); fc->timeout(fc); STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) xfer->hand(xfer); } #define WATCHDOG_HZ 10 static void firewire_watchdog(void *arg) { struct firewire_softc *sc = arg; struct firewire_comm *fc = sc->fc; /* * At boot stage, the device interrupt is disabled and * we encounter a timeout easily. To avoid this, * ignore clock ticks for a while. */ if (sc->watchdog_clock > WATCHDOG_HZ * 15) taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); else sc->watchdog_clock++; callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, firewire_watchdog, sc); } /* * The attach routine. */ static int firewire_attach(device_t dev) { int unit; struct firewire_softc *sc = device_get_softc(dev); device_t pa = device_get_parent(dev); struct firewire_comm *fc; fc = device_get_softc(pa); sc->fc = fc; fc->status = FWBUSNOTREADY; unit = device_get_unit(dev); if (fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA; fwdev_makedev(sc); fc->crom_src_buf = malloc(sizeof(struct crom_src_buf), M_FW, M_NOWAIT | M_ZERO); if (fc->crom_src_buf == NULL) { device_printf(fc->dev, "%s: unable to allocate crom src buffer\n", __func__); return ENOMEM; } fc->topology_map = malloc(sizeof(struct fw_topology_map), M_FW, M_NOWAIT | M_ZERO); if (fc->topology_map == NULL) { device_printf(fc->dev, "%s: unable to allocate topology map\n", __func__); free(fc->crom_src_buf, M_FW); return ENOMEM; } fc->speed_map = malloc(sizeof(struct fw_speed_map), M_FW, M_NOWAIT | M_ZERO); if (fc->speed_map == NULL) { device_printf(fc->dev, "%s: unable to allocate speed map\n", __func__); free(fc->crom_src_buf, M_FW); free(fc->topology_map, M_FW); return ENOMEM; } mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF); CALLOUT_INIT(&fc->timeout_callout); CALLOUT_INIT(&fc->bmr_callout); CALLOUT_INIT(&fc->busprobe_callout); TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc); sc->watchdog_clock = 0; callout_reset(&sc->fc->timeout_callout, hz, firewire_watchdog, sc); /* create thread */ kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread, 0, 0, "fw%d_probe", unit); /* Locate our children */ bus_identify_children(dev); /* launch attachement of the added children */ bus_attach_children(dev); /* bus_reset */ FW_GLOCK(fc); fw_busreset(fc, FWBUSNOTREADY); FW_GUNLOCK(fc); fc->ibr(fc); return 0; } /* * Attach it as child. */ static device_t firewire_add_child(device_t dev, u_int order, const char *name, int unit) { device_t child; struct firewire_softc *sc; struct fw_child_ivars *iv; sc = device_get_softc(dev); child = device_add_child(dev, name, unit); if (child) { iv = malloc(sizeof(*iv), M_FW, M_NOWAIT | M_ZERO); if (iv == NULL) { device_delete_child(dev, child); return (NULL); } iv->type = FW_CHILD_BUS; iv->u.fc = sc->fc; device_set_ivars(child, iv); device_probe_and_attach(child); } return child; } static void firewire_child_deleted(device_t dev, device_t child) { struct fw_child_ivars *iv; iv = device_get_ivars(child); if (iv != NULL) { if (iv->type == FW_CHILD_UNIT && iv->u.unit != NULL) iv->u.unit->dev = NULL; free(iv, M_FW); device_set_ivars(child, NULL); } } static int firewire_resume(device_t dev) { struct firewire_softc *sc; sc = device_get_softc(dev); sc->fc->status = FWBUSNOTREADY; bus_generic_resume(dev); return (0); } /* * Detach it. */ static int firewire_detach(device_t dev) { struct firewire_softc *sc; struct firewire_comm *fc; struct fw_device *fwdev, *fwdev_next; int err; sc = device_get_softc(dev); fc = sc->fc; mtx_lock(&fc->wait_lock); fc->status = FWBUSDETACH; wakeup(fc); if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) printf("firewire probe thread didn't die\n"); mtx_unlock(&fc->wait_lock); if (fc->arq != 0 && fc->arq->maxq > 0) fw_drain_txq(fc); if ((err = fwdev_destroydev(sc)) != 0) return err; /* Remove unit children before bus_generic_detach */ for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = fwdev_next) { fwdev_next = STAILQ_NEXT(fwdev, link); fw_remove_unit_children(fc, fwdev); } if ((err = bus_generic_detach(dev)) != 0) return err; callout_stop(&fc->timeout_callout); callout_stop(&fc->bmr_callout); callout_stop(&fc->busprobe_callout); /* Drain xfers queued by children during detach or pending callouts. */ fw_drain_txq(fc); for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = fwdev_next) { fwdev_next = STAILQ_NEXT(fwdev, link); free(fwdev, M_FW); } free(fc->topology_map, M_FW); free(fc->speed_map, M_FW); free(fc->crom_src_buf, M_FW); mtx_destroy(&fc->tlabel_lock); mtx_destroy(&fc->wait_lock); return (0); } static void fw_xferq_drain(struct fw_xferq *xferq) { struct fw_xfer *xfer; while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { STAILQ_REMOVE_HEAD(&xferq->q, link); xfer->resp = EAGAIN; xfer->flag = FWXF_SENTERR; fw_xfer_done(xfer); } } void fw_drain_txq(struct firewire_comm *fc) { struct fw_xfer *xfer, *txfer; STAILQ_HEAD(, fw_xfer) xfer_drain; int i; STAILQ_INIT(&xfer_drain); FW_GLOCK(fc); fw_xferq_drain(fc->atq); fw_xferq_drain(fc->ats); for (i = 0; i < fc->nisodma; i++) fw_xferq_drain(fc->it[i]); FW_GUNLOCK(fc); mtx_lock(&fc->tlabel_lock); for (i = 0; i < FW_NUM_TLABELS; i++) while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { if (firewire_debug) printf("tl=%d flag=%d\n", i, xfer->flag); xfer->tl = -1; xfer->resp = EAGAIN; STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); } mtx_unlock(&fc->tlabel_lock); STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) xfer->hand(xfer); } static void fw_reset_csr(struct firewire_comm *fc) { int i; CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); CSRARC(fc, NODE_IDS) = 0x3f; CSRARC(fc, TOPO_MAP + 8) = 0; fc->irm = -1; fc->max_node = -1; for (i = 2; i < FW_MAX_NODES - 2; i++) { CSRARC(fc, SPED_MAP + i * 4) = 0; } CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); CSRARC(fc, RESET_START) = 0; CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; CSRARC(fc, SPLIT_TIMEOUT_LO) = FW_SPLIT_TIMEOUT_CYCLES << 19; CSRARC(fc, CYCLE_TIME) = 0x0; CSRARC(fc, BUS_TIME) = 0x0; CSRARC(fc, BUS_MGR_ID) = FW_NO_BUS_MANAGER; CSRARC(fc, BANDWIDTH_AV) = FW_BANDWIDTH_AVAILABLE; CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; CSRARC(fc, IP_CHANNELS) = (1U << 31); CSRARC(fc, CONF_ROM) = 0x04 << 24; CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 | 0xff << 16 | 0x09 << 8; CSRARC(fc, CONF_ROM + 0xc) = 0; /* DV depend CSRs see blue book */ CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); } static void fw_init_crom(struct firewire_comm *fc) { struct crom_src *src; src = &fc->crom_src_buf->src; bzero(src, sizeof(struct crom_src)); /* BUS info sample */ src->hdr.info_len = 4; src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; src->businfo.irmc = 1; src->businfo.cmc = 1; src->businfo.isc = 1; src->businfo.bmc = 1; src->businfo.pmc = 0; src->businfo.cyc_clk_acc = 100; src->businfo.max_rec = fc->maxrec; src->businfo.max_rom = MAXROM_4; #define FW_GENERATION_CHANGEABLE 2 src->businfo.generation = FW_GENERATION_CHANGEABLE; src->businfo.link_spd = fc->speed; src->businfo.eui64.hi = fc->eui.hi; src->businfo.eui64.lo = fc->eui.lo; STAILQ_INIT(&src->chunk_list); fc->crom_src = src; fc->crom_root = &fc->crom_src_buf->root; } static void fw_reset_crom(struct firewire_comm *fc) { struct crom_src_buf *buf; struct crom_src *src; struct crom_chunk *root; buf = fc->crom_src_buf; src = fc->crom_src; root = fc->crom_root; STAILQ_INIT(&src->chunk_list); bzero(root, sizeof(struct crom_chunk)); crom_add_chunk(src, NULL, root, 0); crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* private company_id */ crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); mtx_lock(&prison0.pr_mtx); crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname); mtx_unlock(&prison0.pr_mtx); } /* * Called after bus reset. */ void fw_busreset(struct firewire_comm *fc, uint32_t new_status) { struct firewire_dev_comm *fdc; struct crom_src *src; device_t *devlistp; uint32_t *newrom; int i, devcnt; FW_GLOCK_ASSERT(fc); if (fc->status == FWBUSMGRELECT) callout_stop(&fc->bmr_callout); fc->status = new_status; fw_reset_csr(fc); if (fc->status == FWBUSNOTREADY) fw_init_crom(fc); fw_reset_crom(fc); /* * Skip unit children; only bus-level children have post_busreset. */ if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { for (i = 0; i < devcnt; i++) { struct fw_child_ivars *iv; if (device_get_state(devlistp[i]) < DS_ATTACHED) continue; iv = fw_get_ivars(devlistp[i]); if (iv == NULL || iv->type != FW_CHILD_BUS) continue; fdc = device_get_softc(devlistp[i]); if (fdc->post_busreset != NULL) fdc->post_busreset(fdc); } free(devlistp, M_TEMP); } src = &fc->crom_src_buf->src; /* * If the old config rom needs to be overwritten, * bump the businfo.generation indicator to * indicate that we need to be reprobed * See 1394a-2000 8.3.2.5.4 for more details. * generation starts at 2 and rolls over at 0xF * back to 2. * * A generation of 0 indicates a device * that is not 1394a-2000 compliant. * A generation of 1 indicates a device that * does not change it's Bus Info Block or * Configuration ROM. */ #define FW_MAX_GENERATION 0xF newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); if (newrom == NULL) goto out; src = &fc->crom_src_buf->src; crom_load(src, newrom, CROMSIZE); if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { /* Bump generation and reload. */ src->businfo.generation++; /* Handle generation count wraps. */ if (src->businfo.generation < FW_GENERATION_CHANGEABLE) src->businfo.generation = FW_GENERATION_CHANGEABLE; /* Recalculate CRC to account for generation change. */ crom_load(src, newrom, CROMSIZE); bcopy(newrom, fc->config_rom, CROMSIZE); } free(newrom, M_FW); out:; } /* Call once after reboot */ void fw_init(struct firewire_comm *fc) { int i; #ifdef FW_VMACCESS struct fw_xfer *xfer; struct fw_bind *fwb; #endif fc->arq->queued = 0; fc->ars->queued = 0; fc->atq->queued = 0; fc->ats->queued = 0; fc->arq->buf = NULL; fc->ars->buf = NULL; fc->atq->buf = NULL; fc->ats->buf = NULL; fc->arq->flag = 0; fc->ars->flag = 0; fc->atq->flag = 0; fc->ats->flag = 0; STAILQ_INIT(&fc->atq->q); STAILQ_INIT(&fc->ats->q); for (i = 0; i < fc->nisodma; i++) { fc->it[i]->queued = 0; fc->ir[i]->queued = 0; fc->it[i]->start = NULL; fc->ir[i]->start = NULL; fc->it[i]->buf = NULL; fc->ir[i]->buf = NULL; fc->it[i]->flag = FWXFERQ_STREAM; fc->ir[i]->flag = FWXFERQ_STREAM; STAILQ_INIT(&fc->it[i]->q); STAILQ_INIT(&fc->ir[i]->q); } fc->arq->maxq = FWMAXQUEUE; fc->ars->maxq = FWMAXQUEUE; fc->atq->maxq = FWMAXQUEUE; fc->ats->maxq = FWMAXQUEUE; for (i = 0; i < fc->nisodma; i++) { fc->ir[i]->maxq = FWMAXQUEUE; fc->it[i]->maxq = FWMAXQUEUE; } CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; CSRARC(fc, TOPO_MAP + 4) = 1; CSRARC(fc, SPED_MAP) = 0x3f1 << 16; CSRARC(fc, SPED_MAP + 4) = 1; STAILQ_INIT(&fc->devices); /* Initialize Async handlers */ STAILQ_INIT(&fc->binds); for (i = 0; i < FW_NUM_TLABELS; i++) { STAILQ_INIT(&fc->tlabels[i]); } fc->crom_src_buf = NULL; #ifdef FW_VMACCESS xfer = fw_xfer_alloc(); if (xfer == NULL) return; fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT); if (fwb == NULL) { fw_xfer_free(xfer); return; } xfer->hand = fw_vmaccess; xfer->fc = fc; xfer->sc = NULL; fwb->start_hi = 0x2; fwb->start_lo = 0; fwb->addrlen = 0xffffffff; fwb->xfer = xfer; fw_bindadd(fc, fwb); #endif } #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \ ((fwb)->end < (addr)) ? 1 : 0) /* * To lookup bound process from IEEE1394 address. */ struct fw_bind * fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) { u_int64_t addr; struct fw_bind *tfw, *r = NULL; addr = ((u_int64_t)dest_hi << 32) | dest_lo; FW_GLOCK(fc); STAILQ_FOREACH(tfw, &fc->binds, fclist) if (BIND_CMP(addr, tfw) == 0) { r = tfw; break; } FW_GUNLOCK(fc); return (r); } /* * To bind IEEE1394 address block to process. */ int fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) { struct fw_bind *tfw, *prev = NULL; int r = 0; if (fwb->start > fwb->end) { printf("%s: invalid range\n", __func__); return EINVAL; } FW_GLOCK(fc); STAILQ_FOREACH(tfw, &fc->binds, fclist) { if (fwb->end < tfw->start) break; prev = tfw; } if (prev == NULL) STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); else if (prev->end < fwb->start) STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); else { printf("%s: bind failed\n", __func__); r = EBUSY; } FW_GUNLOCK(fc); return (r); } /* * To free IEEE1394 address block. */ int fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) { struct fw_bind *tfw; FW_GLOCK(fc); STAILQ_FOREACH(tfw, &fc->binds, fclist) if (tfw == fwb) { STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); goto found; } printf("%s: no such binding\n", __func__); FW_GUNLOCK(fc); return (1); found: FW_GUNLOCK(fc); return 0; } int fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, int slen, int rlen, int n, struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) { int i; struct fw_xfer *xfer; for (i = 0; i < n; i++) { xfer = fw_xfer_alloc_buf(type, slen, rlen); if (xfer == NULL) return (i); xfer->fc = fc; xfer->sc = sc; xfer->hand = hand; STAILQ_INSERT_TAIL(q, xfer, link); } return (n); } void fw_xferlist_remove(struct fw_xferlist *q) { struct fw_xfer *xfer, *next; for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { next = STAILQ_NEXT(xfer, link); fw_xfer_free_buf(xfer); } STAILQ_INIT(q); } /* * dump packet header */ static void fw_dump_hdr(struct fw_pkt *fp, char *prefix) { printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " "src=0x%03x\n", prefix, fp->mode.hdr.dst & 0x3f, fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, fp->mode.hdr.tcode, fp->mode.hdr.pri, fp->mode.hdr.src); } /* * To free transaction label. */ static void fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) { struct fw_xfer *txfer; mtx_lock(&fc->tlabel_lock); if (xfer->tl < 0) { mtx_unlock(&fc->tlabel_lock); return; } /* make sure the label is allocated */ STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) if (txfer == xfer) break; if (txfer == NULL) { printf("%s: the xfer is not in the queue " "(tlabel=%d, flag=0x%x)\n", __FUNCTION__, xfer->tl, xfer->flag); fw_dump_hdr(&xfer->send.hdr, "send"); fw_dump_hdr(&xfer->recv.hdr, "recv"); kdb_backtrace(); mtx_unlock(&fc->tlabel_lock); return; } STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); xfer->tl = -1; mtx_unlock(&fc->tlabel_lock); return; } /* * Look up an XFER by transaction label. * Removes the xfer from fc->tlabels only when AT transmit has completed * (FWXF_SENT); FWXF_START xfers remain so fw_drain_txq() can find them * on a bus reset. */ static struct fw_xfer * fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) { struct fw_xfer *xfer; int req; mtx_lock(&fc->tlabel_lock); STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) { if (xfer->send.hdr.mode.hdr.dst != node) continue; /* Validate tcode match before claiming the xfer. */ req = xfer->send.hdr.mode.hdr.tcode; if (xfer->fc->tcode[req].valid_res != tcode) { printf("%s: invalid response tcode " "(0x%x for 0x%x)\n", __func__, tcode, req); mtx_unlock(&fc->tlabel_lock); return (NULL); } /* * Remove from tlabels only after AT transmit completes * (FWXF_SENT). Early responses (FWXF_START) must stay * in the list until fwohci_txd() drains the descriptor. */ if (xfer->flag & FWXF_SENT) { STAILQ_REMOVE(&fc->tlabels[tlabel], xfer, fw_xfer, tlabel); xfer->tl = -1; } mtx_unlock(&fc->tlabel_lock); if (firewire_debug > 2) printf("fw_tl2xfer: found tl=%d\n", tlabel); return (xfer); } mtx_unlock(&fc->tlabel_lock); if (firewire_debug > 1) printf("fw_tl2xfer: not found tl=%d\n", tlabel); return (NULL); } /* * To allocate IEEE1394 XFER structure. */ struct fw_xfer * fw_xfer_alloc(struct malloc_type *type) { struct fw_xfer *xfer; xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); if (xfer == NULL) return xfer; xfer->malloc = type; xfer->tl = -1; return xfer; } struct fw_xfer * fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) { struct fw_xfer *xfer; xfer = fw_xfer_alloc(type); if (xfer == NULL) return (NULL); xfer->send.pay_len = send_len; xfer->recv.pay_len = recv_len; if (send_len > 0) { xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); if (xfer->send.payload == NULL) { fw_xfer_free(xfer); return (NULL); } } if (recv_len > 0) { xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); if (xfer->recv.payload == NULL) { if (xfer->send.payload != NULL) free(xfer->send.payload, type); fw_xfer_free(xfer); return (NULL); } } return (xfer); } /* * IEEE1394 XFER post process. */ void fw_xfer_done(struct fw_xfer *xfer) { if (xfer->hand == NULL) { printf("hand == NULL\n"); return; } if (xfer->fc == NULL) panic("fw_xfer_done: why xfer->fc is NULL?"); fw_tl_free(xfer->fc, xfer); xfer->hand(xfer); } void fw_xfer_unload(struct fw_xfer *xfer) { if (xfer == NULL) return; if (xfer->fc != NULL) { FW_GLOCK(xfer->fc); if (xfer->flag & FWXF_INQ) { STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); xfer->flag &= ~FWXF_INQ; } FW_GUNLOCK(xfer->fc); /* * Ensure that any tlabel owner can't access this * xfer after it's freed. */ fw_tl_free(xfer->fc, xfer); if (firewire_debug && (xfer->flag & FWXF_START)) printf("fw_xfer_free FWXF_START\n"); } xfer->flag = FWXF_INIT; xfer->resp = 0; } /* * To free IEEE1394 XFER structure. */ void fw_xfer_free_buf(struct fw_xfer *xfer) { if (xfer == NULL) { printf("%s: xfer == NULL\n", __func__); return; } fw_xfer_unload(xfer); if (xfer->send.payload != NULL) free(xfer->send.payload, xfer->malloc); if (xfer->recv.payload != NULL) free(xfer->recv.payload, xfer->malloc); free(xfer, xfer->malloc); } void fw_xfer_free(struct fw_xfer *xfer) { if (xfer == NULL) { printf("%s: xfer == NULL\n", __func__); return; } fw_xfer_unload(xfer); free(xfer, xfer->malloc); } void fw_asy_callback_free(struct fw_xfer *xfer) { fw_xfer_free(xfer); } /* * To configure PHY. */ static void fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) { struct fw_xfer *xfer; struct fw_pkt *fp; fc->status = FWBUSPHYCONF; xfer = fw_xfer_alloc(M_FWXFER); if (xfer == NULL) return; xfer->fc = fc; xfer->hand = fw_asy_callback_free; fp = &xfer->send.hdr; fp->mode.ld[1] = 0; if (root_node >= 0) fp->mode.ld[1] |= FW_PHY_ROOT_BIT | (root_node & FW_NODE_MASK) << FW_PHY_ROOT_SHIFT; if (gap_count >= 0) fp->mode.ld[1] |= FW_PHY_GAP_BIT | (gap_count & FW_NODE_MASK) << FW_PHY_GAP_SHIFT; fp->mode.ld[2] = ~fp->mode.ld[1]; fp->mode.common.tcode |= FWTCODE_PHY; if (firewire_debug) device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n", __func__, root_node, gap_count); fw_asyreq(fc, -1, xfer); } /* * Dump self ID. */ static void fw_print_sid(uint32_t sid) { union fw_self_id *s; s = (union fw_self_id *) &sid; if (s->p0.sequel) { if (s->p1.sequence_num == FW_SELF_ID_PAGE0) { printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" "p8:%d p9:%d p10:%d\n", s->p1.phy_id, s->p1.port3, s->p1.port4, s->p1.port5, s->p1.port6, s->p1.port7, s->p1.port8, s->p1.port9, s->p1.port10); } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) { printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n", s->p2.phy_id, s->p2.port11, s->p2.port12, s->p2.port13, s->p2.port14, s->p2.port15); } else { printf("node:%d Unknown Self ID Page number %d\n", s->p1.phy_id, s->p1.sequence_num); } } else { printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" " p0:%d p1:%d p2:%d i:%d m:%d\n", s->p0.phy_id, s->p0.link_active, s->p0.gap_count, s->p0.phy_speed, s->p0.contender, s->p0.power_class, s->p0.port0, s->p0.port1, s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); } } /* * To receive self ID. */ void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len) { uint32_t *p; union fw_self_id *self_id; u_int i, j, node, c_port = 0, i_branch = 0; fc->sid_cnt = len / (sizeof(uint32_t) * 2); fc->max_node = fc->nodeid & FW_NODE_MASK; CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; fc->status = FWBUSCYMELECT; fc->topology_map->crc_len = 2; fc->topology_map->generation++; fc->topology_map->self_id_count = 0; fc->topology_map->node_count= 0; fc->speed_map->generation++; fc->speed_map->crc_len = 1 + (FW_MAX_NODES * FW_MAX_NODES + 3) / 4; self_id = &fc->topology_map->self_id[0]; for (i = 0; i < fc->sid_cnt; i++) { if (sid[1] != ~sid[0]) { device_printf(fc->bdev, "%s: ERROR invalid self-id packet\n", __func__); sid += 2; continue; } *self_id = *((union fw_self_id *)sid); fc->topology_map->crc_len++; if (self_id->p0.sequel == 0) { fc->topology_map->node_count++; c_port = 0; if (firewire_debug) fw_print_sid(sid[0]); node = self_id->p0.phy_id; if (fc->max_node < node) fc->max_node = self_id->p0.phy_id; fc->speed_map->speed[node][node] = self_id->p0.phy_speed; for (j = 0; j < node; j++) { fc->speed_map->speed[j][node] = fc->speed_map->speed[node][j] = min(fc->speed_map->speed[j][j], self_id->p0.phy_speed); } if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && (self_id->p0.link_active && self_id->p0.contender)) fc->irm = self_id->p0.phy_id; if (self_id->p0.port0 >= 0x2) c_port++; if (self_id->p0.port1 >= 0x2) c_port++; if (self_id->p0.port2 >= 0x2) c_port++; } if (c_port > 2) i_branch += (c_port - 2); sid += 2; self_id++; fc->topology_map->self_id_count++; } /* CRC */ fc->topology_map->crc = fw_crc16( (uint32_t *)&fc->topology_map->generation, fc->topology_map->crc_len * 4); fc->speed_map->crc = fw_crc16( (uint32_t *)&fc->speed_map->generation, fc->speed_map->crc_len * 4); /* byteswap and copy to CSR */ p = (uint32_t *)fc->topology_map; for (i = 0; i <= fc->topology_map->crc_len; i++) CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); p = (uint32_t *)fc->speed_map; CSRARC(fc, SPED_MAP) = htonl(*p++); CSRARC(fc, SPED_MAP + 4) = htonl(*p++); /* don't byte-swap uint8_t array */ bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4); fc->max_hop = fc->max_node - i_branch; device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n", fc->max_node + 1, fc->max_hop, (fc->irm == -1) ? "Not IRM capable" : "cable IRM", fc->irm, (fc->irm == fc->nodeid) ? " (me) " : ""); if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == FW_NO_BUS_MANAGER)) { if (fc->irm == fc->nodeid) { fc->status = FWBUSMGRDONE; CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); fw_bmr(fc); } else { fc->status = FWBUSMGRELECT; callout_reset(&fc->bmr_callout, hz / 8, fw_try_bmr, fc); } } else fc->status = FWBUSMGRDONE; callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc); } /* * To probe devices on the IEEE1394 bus. */ static void fw_bus_probe(void *arg) { struct firewire_comm *fc; struct fw_device *fwdev; fc = arg; fc->status = FWBUSEXPLORE; /* Invalidate all devices, just after bus reset. */ if (firewire_debug) device_printf(fc->bdev, "%s:" "iterate and invalidate all nodes\n", __func__); STAILQ_FOREACH(fwdev, &fc->devices, link) if (fwdev->status != FWDEVINVAL) { fwdev->status = FWDEVINVAL; fwdev->rcnt = 0; if (firewire_debug) device_printf(fc->bdev, "%s:" "Invalidate Dev ID: %08x%08x\n", __func__, fwdev->eui.hi, fwdev->eui.lo); } else { if (firewire_debug) device_printf(fc->bdev, "%s:" "Dev ID: %08x%08x already invalid\n", __func__, fwdev->eui.hi, fwdev->eui.lo); } wakeup(fc); } static int fw_explore_read_quads(struct fw_device *fwdev, int offset, uint32_t *quad, int length) { struct fw_xfer *xfer; uint32_t tmp; int i, error; for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, 0xf0000000 | offset, &tmp, fw_xferwake); if (xfer == NULL) return (-1); fw_xferwait(xfer); if (xfer->resp == 0) quad[i] = ntohl(tmp); error = xfer->resp; fw_xfer_free(xfer); if (error) return (error); } return (0); } static int fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) { int err, i, off; struct csrdirectory *dir; struct csrreg *reg; dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)]; err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)dir, 1); if (err) return (-1); offset += sizeof(uint32_t); reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)reg, dir->crc_len); if (err) return (-1); if (!crom_crc_valid((uint32_t *)reg, dir->crc_len, dir->crc)) { if (firewire_debug) printf("%s: bad CRC in directory at 0x%x\n", __func__, offset - (int)sizeof(uint32_t)); } off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); if (fwdev->rommax < off) fwdev->rommax = off; if (recur == 0) return (0); for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) recur = 1; else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) recur = 0; else continue; off = offset + reg[i].val * sizeof(uint32_t); if (off > CROMSIZE) { printf("%s: invalid offset %d\n", __FUNCTION__, off); return (-1); } err = fw_explore_csrblock(fwdev, off, recur); if (err) return (-1); } return (0); } static int fw_explore_node(struct fw_device *dfwdev) { struct firewire_comm *fc; struct fw_device *fwdev, *pfwdev, *tfwdev; uint32_t *csr; struct csrhdr *hdr; struct bus_info *binfo; int err, node; uint32_t speed_test = 0; fc = dfwdev->fc; csr = dfwdev->csrrom; node = dfwdev->dst; /* First quad */ err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); if (err) { dfwdev->status = FWDEVINVAL; return (-1); } hdr = (struct csrhdr *)&csr[0]; if (hdr->info_len != 4) { if (firewire_debug) device_printf(fc->bdev, "%s: node%d: wrong bus info len(%d)\n", __func__, node, hdr->info_len); dfwdev->status = FWDEVINVAL; return (-1); } /* bus info */ err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); if (err) { dfwdev->status = FWDEVINVAL; return (-1); } binfo = (struct bus_info *)&csr[1]; /* Root header CRC spans entire ROM; validated per-directory below. */ if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { dfwdev->status = FWDEVINVAL; return (-1); } if (firewire_debug) device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n" "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " "generation(%d) link_spd(%d)\n", __func__, node, binfo->irmc, binfo->cmc, binfo->isc, binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, binfo->max_rec, binfo->max_rom, binfo->generation, binfo->link_spd); STAILQ_FOREACH(fwdev, &fc->devices, link) if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) break; if (fwdev == NULL) { /* new device */ fwdev = malloc(sizeof(struct fw_device), M_FW, M_NOWAIT | M_ZERO); if (fwdev == NULL) { device_printf(fc->bdev, "%s: node%d: no memory\n", __func__, node); return (-1); } fwdev->fc = fc; fwdev->eui = binfo->eui64; fwdev->dst = dfwdev->dst; fwdev->maxrec = dfwdev->maxrec; fwdev->status = dfwdev->status; STAILQ_INIT(&fwdev->units); /* * Pre-1394a-2000 didn't have link_spd in * the Bus Info block, so try and use the * speed map value. * 1394a-2000 compliant devices only use * the Bus Info Block link spd value, so * ignore the speed map altogether. SWB */ if (binfo->link_spd == FWSPD_S100 /* 0 */) { device_printf(fc->bdev, "%s: " "Pre 1394a-2000 detected\n", __func__); fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; } else fwdev->speed = binfo->link_spd; /* * Test this speed with a read to the CSRROM. * If it fails, slow down the speed and retry. */ while (fwdev->speed > FWSPD_S100 /* 0 */) { err = fw_explore_read_quads(fwdev, CSRROMOFF, &speed_test, 1); if (err) { device_printf(fc->bdev, "%s: fwdev->speed(%s) decremented due to negotiation\n", __func__, linkspeed[fwdev->speed]); fwdev->speed--; } else break; } /* * If the fwdev is not found in the * fc->devices TAILQ, then we will add it. */ pfwdev = NULL; STAILQ_FOREACH(tfwdev, &fc->devices, link) { if (tfwdev->eui.hi > fwdev->eui.hi || (tfwdev->eui.hi == fwdev->eui.hi && tfwdev->eui.lo > fwdev->eui.lo)) break; pfwdev = tfwdev; } if (pfwdev == NULL) STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); else STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); } else { fwdev->dst = node; fwdev->status = FWDEVINIT; /* unchanged ? */ if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * FW_ROM_HEADER_QUADS) == 0) { if (!STAILQ_EMPTY(&fwdev->units)) { if (firewire_debug) device_printf(fc->dev, "node%d: crom unchanged\n", node); fwdev->rom_changed = 0; return (0); } /* Units lost after detach/reattach; re-parse. */ fwdev->rom_changed = 0; } else { fwdev->rom_changed = 1; } } bzero(&fwdev->csrrom[0], CROMSIZE); /* copy first quad and bus info block */ bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * FW_ROM_HEADER_QUADS); fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ if (err) { if (firewire_debug) device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n", __func__, err); fwdev->status = FWDEVINVAL; fwdev->csrrom[0] = 0; } return (err); } /* * Find the self_id packet for a node, ignoring sequels. */ static union fw_self_id * fw_find_self_id(struct firewire_comm *fc, int node) { uint32_t i; union fw_self_id *s; for (i = 0; i < fc->topology_map->self_id_count; i++) { s = &fc->topology_map->self_id[i]; if (s->p0.sequel) continue; if (s->p0.phy_id == node) return s; } return 0; } static void fw_explore(struct firewire_comm *fc) { int node, err, i, todo, todo2, trys; char nodes[FW_MAX_NODES - 1]; struct fw_device dfwdev; union fw_self_id *fwsid; todo = 0; /* setup dummy fwdev */ dfwdev.fc = fc; dfwdev.speed = 0; dfwdev.maxrec = FW_MAXREC_512; dfwdev.status = FWDEVINIT; for (node = 0; node <= fc->max_node; node++) { /* We don't probe myself and linkdown nodes */ if (node == fc->nodeid) { if (firewire_debug) device_printf(fc->bdev, "%s:" "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n", __func__, node, fc->nodeid, fc->max_node); continue; } else if (firewire_debug) { device_printf(fc->bdev, "%s:" "node(%d) fc->max_node(%d) found\n", __func__, node, fc->max_node); } fwsid = fw_find_self_id(fc, node); if (!fwsid || !fwsid->p0.link_active) { if (firewire_debug) device_printf(fc->bdev, "%s: node%d: link down\n", __func__, node); continue; } nodes[todo++] = node; } for (trys = 0; todo > 0 && trys < FW_EXPLORE_MAX_RETRIES; trys++) { todo2 = 0; for (i = 0; i < todo; i++) { dfwdev.dst = nodes[i]; err = fw_explore_node(&dfwdev); if (err) nodes[todo2++] = nodes[i]; if (firewire_debug) device_printf(fc->bdev, "%s: node %d, err = %d\n", __func__, node, err); } todo = todo2; } } static void fw_bus_probe_thread(void *arg) { struct firewire_comm *fc; fc = arg; mtx_lock(&fc->wait_lock); while (fc->status != FWBUSDETACH) { if (fc->status == FWBUSEXPLORE) { mtx_unlock(&fc->wait_lock); fw_explore(fc); fc->status = FWBUSEXPDONE; if (firewire_debug) printf("bus_explore done\n"); fw_attach_dev(fc); mtx_lock(&fc->wait_lock); } msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); } mtx_unlock(&fc->wait_lock); kproc_exit(0); } static void fw_parse_units(struct fw_device *fwdev) { struct csrhdr *hdr; struct csrdirectory *rootdir, *udir; struct csrreg *ureg; struct fw_unit *unit; uint32_t spec_id, sw_version; uint32_t rom_quads, root_off, root_len; uint32_t reg_off, udir_qoff, udir_len; int ri, ui, uindex; rom_quads = CSRROMSIZE / 4; hdr = (struct csrhdr *)fwdev->csrrom; if (hdr->info_len <= 1) return; root_off = 1 + hdr->info_len; if (root_off >= rom_quads) return; rootdir = (struct csrdirectory *)&fwdev->csrrom[root_off]; root_len = rootdir->crc_len; if (root_off + 1 + root_len > rom_quads) return; if (!crom_crc_valid((uint32_t *)&rootdir->entry[0], root_len, rootdir->crc) && firewire_debug) device_printf(fwdev->fc->bdev, "fw_parse_units: bad root directory CRC\n"); uindex = 0; for (ri = 0; ri < (int)root_len; ri++) { reg_off = root_off + 1 + ri; if (reg_off >= rom_quads) break; if (rootdir->entry[ri].key != CROM_UDIR) continue; udir_qoff = reg_off + rootdir->entry[ri].val; if (udir_qoff >= rom_quads) continue; udir = (struct csrdirectory *)&fwdev->csrrom[udir_qoff]; udir_len = udir->crc_len; if (udir_qoff + 1 + udir_len > rom_quads) continue; if (!crom_crc_valid((uint32_t *)&udir->entry[0], udir_len, udir->crc) && firewire_debug) printf("fw_parse_units: bad CRC in unit dir at 0x%x\n", udir_qoff); spec_id = 0; sw_version = 0; for (ui = 0; ui < (int)udir_len; ui++) { if (udir_qoff + 1 + ui >= rom_quads) break; ureg = &udir->entry[ui]; if (ureg->key == CSRKEY_SPEC) spec_id = ureg->val; else if (ureg->key == CSRKEY_VER) sw_version = ureg->val; } if (spec_id == 0 && sw_version == 0) continue; unit = malloc(sizeof(*unit), M_FW, M_NOWAIT | M_ZERO); if (unit == NULL) continue; unit->fwdev = fwdev; unit->spec_id = spec_id; unit->sw_version = sw_version; unit->dir_offset = udir_qoff * 4; STAILQ_INSERT_TAIL(&fwdev->units, unit, link); uindex++; } if (firewire_debug && uindex > 0) device_printf(fwdev->fc->bdev, "node %d: %d unit director%s found\n", fwdev->dst, uindex, uindex == 1 ? "y" : "ies"); } static void fw_create_unit_children(struct firewire_comm *fc, struct fw_device *fwdev) { struct fw_unit *unit; struct fw_child_ivars *iv; bus_topo_lock(); STAILQ_FOREACH(unit, &fwdev->units, link) { if (unit->dev != NULL) continue; unit->dev = device_add_child(fc->bdev, NULL, DEVICE_UNIT_ANY); if (unit->dev == NULL) { device_printf(fc->bdev, "failed to add unit child for node %d\n", fwdev->dst); continue; } iv = malloc(sizeof(*iv), M_FW, M_NOWAIT | M_ZERO); if (iv == NULL) { device_delete_child(fc->bdev, unit->dev); unit->dev = NULL; continue; } iv->type = FW_CHILD_UNIT; iv->u.unit = unit; device_set_ivars(unit->dev, iv); if (firewire_debug) device_printf(fc->bdev, "node %d: unit spec=0x%06x ver=0x%06x\n", fwdev->dst, unit->spec_id, unit->sw_version); device_probe_and_attach(unit->dev); } bus_topo_unlock(); } static int fw_remove_unit_children(struct firewire_comm *fc, struct fw_device *fwdev) { struct fw_unit *unit, *next; int err, ret; ret = 0; bus_topo_lock(); STAILQ_FOREACH_SAFE(unit, &fwdev->units, link, next) { if (unit->dev != NULL) { err = device_delete_child(fc->bdev, unit->dev); if (err != 0) { ret = err; continue; } unit->dev = NULL; } STAILQ_REMOVE(&fwdev->units, unit, fw_unit, link); free(unit, M_FW); } bus_topo_unlock(); return (ret); } /* * To attach sub-devices layer onto IEEE1394 bus. */ static void fw_attach_dev(struct firewire_comm *fc) { struct fw_device *fwdev, *next; int i, err; device_t *devlistp; int devcnt; struct firewire_dev_comm *fdc; for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { next = STAILQ_NEXT(fwdev, link); if (fwdev->status == FWDEVINIT) { fwdev->status = FWDEVATTACHED; if (fwdev->rom_changed && !STAILQ_EMPTY(&fwdev->units)) { if (fw_remove_unit_children(fc, fwdev) == 0) fwdev->rom_changed = 0; } if (STAILQ_EMPTY(&fwdev->units)) { fw_parse_units(fwdev); } fw_create_unit_children(fc, fwdev); } else if (fwdev->status == FWDEVINVAL) { fwdev->rcnt++; if (firewire_debug) device_printf(fc->bdev, "%s:" "fwdev->rcnt(%d), hold_count(%d)\n", __func__, fwdev->rcnt, hold_count); if (fwdev->rcnt > hold_count) { /* * Remove devices which have not been seen * for a while. */ if (fw_remove_unit_children(fc, fwdev) != 0) continue; STAILQ_REMOVE(&fc->devices, fwdev, fw_device, link); free(fwdev, M_FW); } } } err = device_get_children(fc->bdev, &devlistp, &devcnt); if (err == 0) { for (i = 0; i < devcnt; i++) { struct fw_child_ivars *iv; if (device_get_state(devlistp[i]) < DS_ATTACHED) continue; iv = fw_get_ivars(devlistp[i]); if (iv == NULL || iv->type != FW_CHILD_BUS) continue; fdc = device_get_softc(devlistp[i]); if (fdc->post_explore != NULL) fdc->post_explore(fdc); } free(devlistp, M_TEMP); } return; } /* * To allocate unique transaction label. */ static int fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) { u_int dst, new_tlabel; struct fw_xfer *txfer; dst = xfer->send.hdr.mode.hdr.dst & FW_NODE_MASK; mtx_lock(&fc->tlabel_lock); new_tlabel = (fc->last_tlabel[dst] + 1) & FW_TLABEL_MASK; STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) if ((txfer->send.hdr.mode.hdr.dst & FW_NODE_MASK) == dst) break; if (txfer == NULL) { fc->last_tlabel[dst] = new_tlabel; STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); mtx_unlock(&fc->tlabel_lock); xfer->tl = new_tlabel; xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; if (firewire_debug > 1) printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel); return (new_tlabel); } mtx_unlock(&fc->tlabel_lock); if (firewire_debug > 1) printf("fw_get_tlabel: no free tlabel\n"); return (-1); } static void fw_rcv_copy(struct fw_rcv_buf *rb) { struct fw_pkt *pkt; u_char *p; struct tcode_info *tinfo; u_int res, i, len, plen; rb->xfer->recv.spd = rb->spd; pkt = (struct fw_pkt *)rb->vec->iov_base; tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; /* Copy header */ p = (u_char *)&rb->xfer->recv.hdr; bcopy(rb->vec->iov_base, p, tinfo->hdr_len); rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; rb->vec->iov_len -= tinfo->hdr_len; /* Copy payload */ p = (u_char *)rb->xfer->recv.payload; res = rb->xfer->recv.pay_len; /* special handling for RRESQ */ if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && p != NULL && res >= sizeof(uint32_t)) { *(uint32_t *)p = pkt->mode.rresq.data; rb->xfer->recv.pay_len = sizeof(uint32_t); return; } if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) return; plen = pkt->mode.rresb.len; for (i = 0; i < rb->nvec; i++, rb->vec++) { len = MIN(rb->vec->iov_len, plen); if (res < len) { device_printf(rb->fc->bdev, "%s:" " rcv buffer(%d) is %d bytes short.\n", __func__, rb->xfer->recv.pay_len, len - res); len = res; } bcopy(rb->vec->iov_base, p, len); p += len; res -= len; plen -= len; if (res == 0 || plen == 0) break; } rb->xfer->recv.pay_len -= res; } /* * Generic packet receiving process. */ void fw_rcv(struct fw_rcv_buf *rb) { struct fw_pkt *fp, *resfp; struct fw_bind *bind; int tcode; int oldstate; fp = (struct fw_pkt *)rb->vec[0].iov_base; tcode = fp->mode.common.tcode; switch (tcode) { case FWTCODE_WRES: case FWTCODE_RRESQ: case FWTCODE_RRESB: case FWTCODE_LRES: rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); if (rb->xfer == NULL) { device_printf(rb->fc->bdev, "%s: unknown response " "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", __func__, tcode_str[tcode], tcode, fp->mode.hdr.src, fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, fp->mode.rresq.data); return; } fw_rcv_copy(rb); if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) rb->xfer->resp = EIO; else rb->xfer->resp = 0; /* make sure the packet is drained in AT queue */ oldstate = rb->xfer->flag; rb->xfer->flag = FWXF_RCVD; switch (oldstate) { case FWXF_SENT: fw_xfer_done(rb->xfer); break; case FWXF_START: break; default: device_printf(rb->fc->bdev, "%s: " "unexpected flag 0x%02x\n", __func__, rb->xfer->flag); } return; case FWTCODE_WREQQ: case FWTCODE_WREQB: case FWTCODE_RREQQ: case FWTCODE_RREQB: case FWTCODE_LREQ: bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, fp->mode.rreqq.dest_lo); if (bind == NULL) { device_printf(rb->fc->bdev, "%s: " "Unknown service addr 0x%04x:0x%08x %s(%x)" " src=0x%x data=%x\n", __func__, fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo, tcode_str[tcode], tcode, fp->mode.hdr.src, ntohl(fp->mode.wreqq.data)); if (rb->fc->status == FWBUSINIT) { device_printf(rb->fc->bdev, "%s: cannot respond(bus reset)!\n", __func__); return; } rb->xfer = fw_xfer_alloc(M_FWXFER); if (rb->xfer == NULL) { return; } rb->xfer->send.spd = rb->spd; rb->xfer->send.pay_len = 0; resfp = &rb->xfer->send.hdr; switch (tcode) { case FWTCODE_WREQQ: case FWTCODE_WREQB: resfp->mode.hdr.tcode = FWTCODE_WRES; break; case FWTCODE_RREQQ: resfp->mode.hdr.tcode = FWTCODE_RRESQ; break; case FWTCODE_RREQB: resfp->mode.hdr.tcode = FWTCODE_RRESB; break; case FWTCODE_LREQ: resfp->mode.hdr.tcode = FWTCODE_LRES; break; } resfp->mode.hdr.dst = fp->mode.hdr.src; resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; resfp->mode.hdr.pri = fp->mode.hdr.pri; resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; resfp->mode.rresb.extcode = 0; resfp->mode.rresb.len = 0; rb->xfer->hand = fw_xfer_free; if (fw_asyreq(rb->fc, -1, rb->xfer)) fw_xfer_free(rb->xfer); return; } rb->xfer = STAILQ_FIRST(&bind->xferlist); if (rb->xfer == NULL) { device_printf(rb->fc->bdev, "%s: " "Discard a packet for this bind.\n", __func__); return; } STAILQ_REMOVE_HEAD(&bind->xferlist, link); fw_rcv_copy(rb); rb->xfer->hand(rb->xfer); return; default: device_printf(rb->fc->bdev,"%s: unknown tcode %d\n", __func__, tcode); break; } } /* * Post process for Bus Manager election process. */ static void fw_try_bmr_callback(struct fw_xfer *xfer) { struct firewire_comm *fc; int bmr; if (xfer == NULL) return; fc = xfer->fc; if (xfer->resp != 0) goto error; if (xfer->recv.payload == NULL) goto error; if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) goto error; bmr = ntohl(xfer->recv.payload[0]); if (bmr == 0x3f) bmr = fc->nodeid; CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); fw_xfer_free_buf(xfer); fw_bmr(fc); return; error: device_printf(fc->bdev, "bus manager election failed\n"); fw_xfer_free_buf(xfer); } /* * To candidate Bus Manager election process. */ static void fw_try_bmr(void *arg) { struct fw_xfer *xfer; struct firewire_comm *fc = arg; struct fw_pkt *fp; int err = 0; xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); if (xfer == NULL) return; xfer->send.spd = 0; fc->status = FWBUSMGRELECT; fp = &xfer->send.hdr; fp->mode.lreq.dest_hi = 0xffff; fp->mode.lreq.tlrt = 0; fp->mode.lreq.tcode = FWTCODE_LREQ; fp->mode.lreq.pri = 0; fp->mode.lreq.src = 0; fp->mode.lreq.len = 8; fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; fp->mode.lreq.dst = FWLOCALBUS | fc->irm; fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; xfer->send.payload[0] = htonl(0x3f); xfer->send.payload[1] = htonl(fc->nodeid); xfer->hand = fw_try_bmr_callback; err = fw_asyreq(fc, -1, xfer); if (err) { fw_xfer_free_buf(xfer); return; } return; } #ifdef FW_VMACCESS /* * Software implementation for physical memory block access. * Debug only, too slow for production use. */ static void fw_vmaccess(struct fw_xfer *xfer) { struct fw_pkt *rfp, *sfp = NULL; uint32_t *ld = (uint32_t *)xfer->recv.buf; printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3])); printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); if (xfer->resp != 0) { fw_xfer_free(xfer); return; } if (xfer->recv.buf == NULL) { fw_xfer_free(xfer); return; } rfp = (struct fw_pkt *)xfer->recv.buf; switch (rfp->mode.hdr.tcode) { case FWTCODE_WREQB: xfer->send.buf = malloc(12, M_FW, M_NOWAIT); xfer->send.len = 12; sfp = (struct fw_pkt *)xfer->send.buf; bcopy(rfp->mode.wreqb.payload, (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s ntohs(rfp->mode.wreqb.len)); sfp->mode.wres.tcode = FWTCODE_WRES; sfp->mode.wres.rtcode = 0; break; case FWTCODE_WREQQ: xfer->send.buf = malloc(12, M_FW, M_NOWAIT); xfer->send.len = 12; sfp->mode.wres.tcode = FWTCODE_WRES; *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data; sfp->mode.wres.rtcode = 0; break; case FWTCODE_RREQB: xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT); xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); sfp = (struct fw_pkt *)xfer->send.buf; bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), sfp->mode.rresb.payload, ntohs(rfp->mode.rreqb.len)); sfp->mode.rresb.tcode = FWTCODE_RRESB; sfp->mode.rresb.len = rfp->mode.rreqb.len; sfp->mode.rresb.rtcode = 0; sfp->mode.rresb.extcode = 0; break; case FWTCODE_RREQQ: xfer->send.buf = malloc(16, M_FW, M_NOWAIT); xfer->send.len = 16; sfp = (struct fw_pkt *)xfer->send.buf; sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); sfp->mode.wres.tcode = FWTCODE_RRESQ; sfp->mode.rresb.rtcode = 0; break; default: fw_xfer_free(xfer); return; } sfp->mode.hdr.dst = rfp->mode.hdr.src; xfer->dst = ntohs(rfp->mode.hdr.src); xfer->hand = fw_xfer_free; sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; sfp->mode.hdr.pri = 0; fw_asyreq(xfer->fc, -1, xfer); /**/ return; } #endif /* * CRC16 check-sum for IEEE1394 register blocks. */ uint16_t fw_crc16(uint32_t *ptr, uint32_t len) { uint32_t i, sum, crc = 0; int shift; len = (len + 3) & ~3; for (i = 0; i < len; i += 4) { for (shift = 28; shift >= 0; shift -= 4) { sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum; } crc &= 0xffff; } return ((uint16_t) crc); } /* * Find the root node, if it is not * Cycle Master Capable, then we should * override this and become the Cycle * Master */ static int fw_bmr(struct firewire_comm *fc) { struct fw_device fwdev; union fw_self_id *self_id; int cmstr; uint32_t quad; /* Check to see if the current root node is cycle master capable */ self_id = fw_find_self_id(fc, fc->max_node); if (fc->max_node > 0) { if (self_id->p0.link_active && self_id->p0.contender) cmstr = fc->max_node; else { device_printf(fc->bdev, "root node is not cycle master capable, " "forcing root to node %d\n", fc->nodeid); fw_phy_config(fc, fc->nodeid, -1); return 0; } } else cmstr = -1; device_printf(fc->bdev, "bus manager %d %s\n", CSRARC(fc, BUS_MGR_ID), (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : ""); if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) { /* We are not the bus manager */ return (0); } /* Optimize gapcount */ if (fc->max_hop <= MAX_GAPHOP) fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); /* If we are the cycle master, nothing to do */ if (cmstr == fc->nodeid || cmstr == -1) return 0; /* Bus probe has not finished, make dummy fwdev for cmstr */ bzero(&fwdev, sizeof(fwdev)); fwdev.fc = fc; fwdev.dst = cmstr; fwdev.speed = 0; fwdev.maxrec = 8; /* 512 */ fwdev.status = FWDEVINIT; /* Set cmstr bit on the cycle master */ quad = htonl(1 << 8); fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free); return 0; } int fw_open_isodma(struct firewire_comm *fc, int tx) { struct fw_xferq **xferqa; struct fw_xferq *xferq; int i; if (tx) xferqa = &fc->it[0]; else xferqa = &fc->ir[0]; FW_GLOCK(fc); for (i = 0; i < fc->nisodma; i++) { xferq = xferqa[i]; if ((xferq->flag & FWXFERQ_OPEN) == 0) { xferq->flag |= FWXFERQ_OPEN; break; } } if (i == fc->nisodma) { printf("no free dma channel (tx=%d)\n", tx); i = -1; } FW_GUNLOCK(fc); return (i); } static int fw_modevent(module_t mode, int type, void *data) { int err = 0; static eventhandler_tag fwdev_ehtag = NULL; switch (type) { case MOD_LOAD: firewire_devclass = devclass_create("firewire"); fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, fwdev_clone, 0, 1000); break; case MOD_UNLOAD: if (fwdev_ehtag != NULL) EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); break; case MOD_SHUTDOWN: break; default: return (EOPNOTSUPP); } return (err); } DRIVER_MODULE(firewire, fwohci, firewire_driver, fw_modevent, NULL); MODULE_VERSION(firewire, 1);