/* $NetBSD: firewire.c,v 1.47 2016/11/20 22:47:39 riastradh Exp $ */ /*- * 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. * * $FreeBSD: src/sys/dev/firewire/firewire.c,v 1.110 2009/04/07 02:33:46 sbruno Exp $ * */ #include __KERNEL_RCSID(0, "$NetBSD: firewire.c,v 1.47 2016/11/20 22:47:39 riastradh Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" 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; /* * Setup sysctl(3) MIB, hw.ieee1394if.* * * TBD condition CTLFLAG_PERMANENT on being a module or not */ SYSCTL_SETUP(sysctl_ieee1394if, "sysctl ieee1394if(4) subtree setup") { int rc, ieee1394if_node_num; const struct sysctlnode *node; if ((rc = sysctl_createv(clog, 0, NULL, &node, CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee1394if", SYSCTL_DESCR("ieee1394if controls"), NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { goto err; } ieee1394if_node_num = node->sysctl_num; /* ieee1394if try bus manager flag */ if ((rc = sysctl_createv(clog, 0, NULL, &node, CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, "try_bmr", SYSCTL_DESCR("Try to be a bus manager"), NULL, 0, &try_bmr, 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { goto err; } /* ieee1394if hold count */ if ((rc = sysctl_createv(clog, 0, NULL, &node, CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, "hold_count", SYSCTL_DESCR("Number of count of " "bus resets for removing lost device information"), NULL, 0, &hold_count, 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { goto err; } /* ieee1394if driver debug flag */ if ((rc = sysctl_createv(clog, 0, NULL, &node, CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, "ieee1394_debug", SYSCTL_DESCR("ieee1394if driver debug flag"), NULL, 0, &firewire_debug, 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { goto err; } return; err: aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); } MALLOC_DEFINE(M_FW, "ieee1394", "IEEE1394"); #define FW_MAXASYRTY 4 #define FW_GENERATION_CHANGEABLE 2 static int firewirematch (device_t, cfdata_t, void *); static void firewireattach (device_t, device_t, void *); static int firewiredetach (device_t, int); static int firewire_print (void *, const char *); int firewire_resume (struct firewire_comm *); static void fw_asystart(struct fw_xfer *); static void firewire_xfer_timeout(struct firewire_comm *); static void firewire_watchdog(void *); static void fw_xferq_drain(struct fw_xferq *); static void fw_reset_csr(struct firewire_comm *); static void fw_init_crom(struct firewire_comm *); static void fw_reset_crom(struct firewire_comm *); static void fw_dump_hdr(struct fw_pkt *, const char *); static void fw_tl_free(struct firewire_comm *, struct fw_xfer *); static struct fw_xfer *fw_tl2xfer(struct firewire_comm *, int, int, int); static void fw_phy_config(struct firewire_comm *, int, int); static void fw_print_sid(uint32_t); static void fw_bus_probe(struct firewire_comm *); static int fw_explore_read_quads(struct fw_device *, int, uint32_t *, int); static int fw_explore_csrblock(struct fw_device *, int, int); static int fw_explore_node(struct fw_device *); static union fw_self_id *fw_find_self_id(struct firewire_comm *, int); static void fw_explore(struct firewire_comm *); static void fw_bus_probe_thread(void *); static void fw_attach_dev(struct firewire_comm *); static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); static void fw_rcv_copy(struct fw_rcv_buf *); static void fw_try_bmr_callback(struct fw_xfer *); static void fw_try_bmr(void *); static int fw_bmr(struct firewire_comm *); CFATTACH_DECL_NEW(ieee1394if, sizeof(struct firewire_softc), firewirematch, firewireattach, firewiredetach, NULL); const char *fw_linkspeed[] = { "S100", "S200", "S400", "S800", "S1600", "S3200", "undef", "undef" }; static const 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 int firewirematch(device_t parent, cfdata_t cf, void *aux) { return 1; /* always match */ } static void firewireattach(device_t parent, device_t self, void *aux) { struct firewire_softc *sc = device_private(self); struct firewire_comm *fc = device_private(parent); struct fw_attach_args faa; struct firewire_dev_list *devlist; aprint_naive("\n"); aprint_normal(": IEEE1394 bus\n"); fc->bdev = sc->dev = self; sc->fc = fc; SLIST_INIT(&sc->devlist); fc->status = FWBUSNOTREADY; if (fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA; fc->crom_src_buf = (struct crom_src_buf *)malloc(sizeof(struct crom_src_buf), M_FW, M_NOWAIT | M_ZERO); if (fc->crom_src_buf == NULL) { aprint_error_dev(fc->bdev, "Malloc Failure crom src buff\n"); return; } fc->topology_map = (struct fw_topology_map *)malloc(sizeof(struct fw_topology_map), M_FW, M_NOWAIT | M_ZERO); if (fc->topology_map == NULL) { aprint_error_dev(fc->dev, "Malloc Failure topology map\n"); free(fc->crom_src_buf, M_FW); return; } fc->speed_map = (struct fw_speed_map *)malloc(sizeof(struct fw_speed_map), M_FW, M_NOWAIT | M_ZERO); if (fc->speed_map == NULL) { aprint_error_dev(fc->dev, "Malloc Failure speed map\n"); free(fc->crom_src_buf, M_FW); free(fc->topology_map, M_FW); return; } mutex_init(&fc->tlabel_lock, MUTEX_DEFAULT, IPL_VM); mutex_init(&fc->fc_mtx, MUTEX_DEFAULT, IPL_VM); mutex_init(&fc->wait_lock, MUTEX_DEFAULT, IPL_VM); cv_init(&fc->fc_cv, "ieee1394"); callout_init(&fc->timeout_callout, CALLOUT_MPSAFE); callout_setfunc(&fc->timeout_callout, firewire_watchdog, fc); callout_init(&fc->bmr_callout, CALLOUT_MPSAFE); callout_setfunc(&fc->bmr_callout, fw_try_bmr, fc); callout_init(&fc->busprobe_callout, CALLOUT_MPSAFE); callout_setfunc(&fc->busprobe_callout, (void *)fw_bus_probe, fc); callout_schedule(&fc->timeout_callout, hz); /* Tell config we will have started a thread to scan the bus. */ config_pending_incr(self); /* create thread */ if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, fw_bus_probe_thread, fc, &fc->probe_thread, "fw%dprobe", device_unit(fc->bdev))) { aprint_error_dev(self, "kthread_create failed\n"); config_pending_decr(self); } devlist = malloc(sizeof(struct firewire_dev_list), M_DEVBUF, M_NOWAIT); if (devlist == NULL) { aprint_error_dev(self, "device list allocation failed\n"); return; } faa.name = "fwip"; faa.fc = fc; faa.fwdev = NULL; devlist->dev = config_found(sc->dev, &faa, firewire_print); if (devlist->dev == NULL) free(devlist, M_DEVBUF); else SLIST_INSERT_HEAD(&sc->devlist, devlist, link); /* bus_reset */ fw_busreset(fc, FWBUSNOTREADY); fc->ibr(fc); if (!pmf_device_register(self, NULL, NULL)) aprint_error_dev(self, "couldn't establish power handler\n"); return; } static int firewiredetach(device_t self, int flags) { struct firewire_softc *sc = device_private(self); struct firewire_comm *fc; struct fw_device *fwdev, *fwdev_next; struct firewire_dev_list *devlist; int err; fc = sc->fc; mutex_enter(&fc->wait_lock); fc->status = FWBUSDETACH; cv_signal(&fc->fc_cv); while (fc->status != FWBUSDETACHOK) { err = cv_timedwait_sig(&fc->fc_cv, &fc->wait_lock, hz * 60); if (err == EWOULDBLOCK) { aprint_error_dev(self, "firewire probe thread didn't die\n"); break; } } mutex_exit(&fc->wait_lock); while ((devlist = SLIST_FIRST(&sc->devlist)) != NULL) { if ((err = config_detach(devlist->dev, flags)) != 0) return err; SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list, link); free(devlist, M_DEVBUF); } callout_stop(&fc->timeout_callout); callout_stop(&fc->bmr_callout); callout_stop(&fc->busprobe_callout); /* XXX xfer_free and untimeout on all xfers */ 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); cv_destroy(&fc->fc_cv); mutex_destroy(&fc->wait_lock); mutex_destroy(&fc->fc_mtx); mutex_destroy(&fc->tlabel_lock); return 0; } static int firewire_print(void *aux, const char *pnp) { struct fw_attach_args *fwa = (struct fw_attach_args *)aux; if (pnp) aprint_normal("%s at %s", fwa->name, pnp); return UNCONF; } int firewire_resume(struct firewire_comm *fc) { fc->status = FWBUSNOTREADY; return 0; } /* * Lookup fwdev by node id. */ struct fw_device * fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) { struct fw_device *fwdev; mutex_enter(&fc->fc_mtx); STAILQ_FOREACH(fwdev, &fc->devices, link) if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) break; mutex_exit(&fc->fc_mtx); return fwdev; } /* * Lookup fwdev by EUI64. */ struct fw_device * fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) { struct fw_device *fwdev; mutex_enter(&fc->fc_mtx); STAILQ_FOREACH(fwdev, &fc->devices, link) if (FW_EUI64_EQUAL(fwdev->eui, *eui)) break; mutex_exit(&fc->fc_mtx); 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) { struct fw_xferq *xferq; int len; struct fw_pkt *fp; int tcode; const struct tcode_info *info; if (xfer == NULL) return EINVAL; if (xfer->hand == NULL) { aprint_error_dev(fc->bdev, "hand == NULL\n"); return EINVAL; } fp = &xfer->send.hdr; tcode = fp->mode.common.tcode & 0xf; info = &fc->tcode[tcode]; if (info->flag == 0) { aprint_error_dev(fc->bdev, "invalid tcode=%x\n", tcode); return EINVAL; } /* XXX allow bus explore packets only after bus rest */ 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)) { aprint_error_dev(fc->bdev, "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) { aprint_error_dev(fc->bdev, "len(%d) != send.pay_len(%d) %s(%x)\n", len, xfer->send.pay_len, tcode_str[tcode], tcode); return EINVAL; } if (xferq->start == NULL) { aprint_error_dev(fc->bdev, "xferq->start == NULL\n"); return EINVAL; } if (!(xferq->queued < xferq->maxq)) { aprint_error_dev(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 0; } /* * Wakeup blocked process. */ void fw_xferwake(struct fw_xfer *xfer) { mutex_enter(&xfer->fc->wait_lock); xfer->flag |= FWXF_WAKE; cv_signal(&xfer->cv); mutex_exit(&xfer->fc->wait_lock); return; } int fw_xferwait(struct fw_xfer *xfer) { struct firewire_comm *fc = xfer->fc; int err = 0; mutex_enter(&fc->wait_lock); while (!(xfer->flag & FWXF_WAKE)) err = cv_wait_sig(&xfer->cv, &fc->wait_lock); mutex_exit(&fc->wait_lock); return err; } void fw_drain_txq(struct firewire_comm *fc) { struct fw_xfer *xfer; STAILQ_HEAD(, fw_xfer) xfer_drain; int i; STAILQ_INIT(&xfer_drain); mutex_enter(&fc->atq->q_mtx); fw_xferq_drain(fc->atq); mutex_exit(&fc->atq->q_mtx); mutex_enter(&fc->ats->q_mtx); fw_xferq_drain(fc->ats); mutex_exit(&fc->ats->q_mtx); for (i = 0; i < fc->nisodma; i++) fw_xferq_drain(fc->it[i]); mutex_enter(&fc->tlabel_lock); for (i = 0; i < 0x40; i++) while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { if (firewire_debug) printf("tl=%d flag=%d\n", i, xfer->flag); xfer->resp = EAGAIN; STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); } mutex_exit(&fc->tlabel_lock); STAILQ_FOREACH(xfer, &xfer_drain, tlabel) xfer->hand(xfer); } /* * Called after bus reset. */ void fw_busreset(struct firewire_comm *fc, uint32_t new_status) { struct firewire_softc *sc = device_private(fc->bdev); struct firewire_dev_list *devlist; struct firewire_dev_comm *fdc; struct crom_src *src; uint32_t *newrom; 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); /* How many safe this access? */ SLIST_FOREACH(devlist, &sc->devlist, link) { fdc = device_private(devlist->dev); if (fdc->post_busreset != NULL) fdc->post_busreset(fdc); } /* * 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 its Bus Info Block or * Configuration ROM. */ #define FW_MAX_GENERATION 0xF newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); src = &fc->crom_src_buf->src; crom_load(src, newrom, CROMSIZE); if (memcmp(newrom, fc->config_rom, CROMSIZE) != 0) { if (src->businfo.generation++ > FW_MAX_GENERATION) src->businfo.generation = FW_GENERATION_CHANGEABLE; memcpy((void *)fc->config_rom, newrom, CROMSIZE); } free(newrom, M_FW); } /* Call once after reboot */ void fw_init(struct firewire_comm *fc) { int i; 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); mutex_init(&fc->arq->q_mtx, MUTEX_DEFAULT, IPL_VM); mutex_init(&fc->ars->q_mtx, MUTEX_DEFAULT, IPL_VM); mutex_init(&fc->atq->q_mtx, MUTEX_DEFAULT, IPL_VM); mutex_init(&fc->ats->q_mtx, MUTEX_DEFAULT, IPL_VM); fc->arq->maxq = FWMAXQUEUE; fc->ars->maxq = FWMAXQUEUE; fc->atq->maxq = FWMAXQUEUE; fc->ats->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 < 0x40; i++) STAILQ_INIT(&fc->tlabels[i]); /* DV depend CSRs see blue book */ #if 0 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ CSRARC(fc, oPCR) = 0x8000007a; for (i = 4; i < 0x7c/4; i+=4) CSRARC(fc, i + oPCR) = 0x8000007a; CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ CSRARC(fc, iPCR) = 0x803f0000; for (i = 4; i < 0x7c/4; i+=4) CSRARC(fc, i + iPCR) = 0x0; #endif fc->crom_src_buf = NULL; } /* * Called by HCI driver when it has determined the number of * isochronous DMA channels. */ void fw_init_isodma(struct firewire_comm *fc) { unsigned i; 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->ir[i]->maxq = FWMAXQUEUE; fc->it[i]->maxq = FWMAXQUEUE; cv_init(&fc->ir[i]->cv, "fw_read"); cv_init(&fc->it[i]->cv, "fw_write"); } } void fw_destroy_isodma(struct firewire_comm *fc) { unsigned i; for (i = 0; i < fc->nisodma; i++) { cv_destroy(&fc->ir[i]->cv); cv_destroy(&fc->it[i]->cv); } } void fw_destroy(struct firewire_comm *fc) { mutex_destroy(&fc->arq->q_mtx); mutex_destroy(&fc->ars->q_mtx); mutex_destroy(&fc->atq->q_mtx); mutex_destroy(&fc->ats->q_mtx); } #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; mutex_enter(&fc->fc_mtx); STAILQ_FOREACH(tfw, &fc->binds, fclist) if (BIND_CMP(addr, tfw) == 0) { r = tfw; break; } mutex_exit(&fc->fc_mtx); 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) { aprint_error_dev(fc->bdev, "invalid range\n"); return EINVAL; } mutex_enter(&fc->fc_mtx); 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 { aprint_error_dev(fc->bdev, "bind failed\n"); r = EBUSY; } mutex_exit(&fc->fc_mtx); return r; } /* * To free IEEE1394 address block. */ int fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) { #if 0 struct fw_xfer *xfer, *next; #endif struct fw_bind *tfw; mutex_enter(&fc->fc_mtx); STAILQ_FOREACH(tfw, &fc->binds, fclist) if (tfw == fwb) { STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); mutex_exit(&fc->fc_mtx); goto found; } mutex_exit(&fc->fc_mtx); aprint_error_dev(fc->bdev, "no such binding\n"); return 1; found: #if 0 /* shall we do this? */ for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { next = STAILQ_NEXT(xfer, link); fw_xfer_free(xfer); } STAILQ_INIT(&fwb->xferlist); #endif 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 *)) { struct fw_xfer *xfer; int i; for (i = 0; i < n; i++) { xfer = fw_xfer_alloc_buf(type, slen, rlen); if (xfer == NULL) return n; 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); } /* * 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; cv_init(&xfer->cv, "fwxfer"); 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) { aprint_error_dev(xfer->fc->bdev, "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->flag & FWXF_INQ) { aprint_error_dev(xfer->fc->bdev, "fw_xfer_free FWXF_INQ\n"); mutex_enter(&xfer->q->q_mtx); STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); #if 0 xfer->q->queued--; #endif mutex_exit(&xfer->q->q_mtx); } if (xfer->fc != NULL) { #if 1 if (xfer->flag == FWXF_START) /* * This could happen if: * 1. We call fwohci_arcv() before fwohci_txd(). * 2. firewire_watch() is called. */ aprint_error_dev(xfer->fc->bdev, "fw_xfer_free FWXF_START\n"); #endif } xfer->flag = FWXF_INIT; xfer->resp = 0; } /* * To free IEEE1394 XFER structure. */ void fw_xfer_free(struct fw_xfer* xfer) { if (xfer == NULL) { aprint_error("fw_xfer_free: xfer == NULL\n"); return; } fw_xfer_unload(xfer); cv_destroy(&xfer->cv); free(xfer, xfer->malloc); } void fw_xfer_free_buf(struct fw_xfer* xfer) { if (xfer == NULL) { aprint_error("fw_xfer_free_buf: xfer == NULL\n"); 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); } cv_destroy(&xfer->cv); free(xfer, xfer->malloc); } void fw_asy_callback_free(struct fw_xfer *xfer) { #if 0 printf("asyreq done flag=%d resp=%d\n", xfer->flag, xfer->resp); #endif fw_xfer_free(xfer); } /* * 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 & 0x3f; 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 + (64*64 + 3) / 4; self_id = fc->topology_map->self_id; for (i = 0; i < fc->sid_cnt; i++) { if (sid[1] != ~sid[0]) { aprint_error_dev(fc->bdev, "ERROR invalid self-id packet\n"); 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; /* XXX I'm not sure this is the right speed_map */ 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 */ memcpy(&CSRARC(fc, SPED_MAP + 8), p, (fc->speed_map->crc_len - 1) * 4); fc->max_hop = fc->max_node - i_branch; aprint_normal_dev(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) == 0x3f)) { 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_schedule(&fc->bmr_callout, hz/8); } } else fc->status = FWBUSMGRDONE; callout_schedule(&fc->busprobe_callout, hz/4); } /* * Generic packet receiving process. */ void fw_rcv(struct fw_rcv_buf *rb) { struct fw_pkt *fp, *resfp; struct fw_bind *bind; int tcode; int i, len, oldstate; #if 0 { uint32_t *qld; int i; qld = (uint32_t *)buf; printf("spd %d len:%d\n", spd, len); for (i = 0; i <= len && i < 32; i+= 4) { printf("0x%08x ", ntohl(qld[i/4])); if ((i % 16) == 15) printf("\n"); } if ((i % 16) != 15) printf("\n"); } #endif 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, tcode); if (rb->xfer == NULL) { aprint_error_dev(rb->fc->bdev, "unknown response" " %s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", tcode_str[tcode], tcode, fp->mode.hdr.src, fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, fp->mode.rresq.data); #if 0 printf("try ad-hoc work around!!\n"); rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, (fp->mode.hdr.tlrt >> 2) ^ 3); if (rb->xfer == NULL) { printf("no use...\n"); return; } #else return; #endif } 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: #if 0 if (firewire_debug) printf("not sent yet tl=%x\n", rb->xfer->tl); #endif break; default: aprint_error_dev(rb->fc->bdev, "unexpected flag 0x%02x\n", 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) { #if 1 aprint_error_dev(rb->fc->bdev, "Unknown service addr" " 0x%04x:0x%08x %s(%x) src=0x%x data=%x\n", fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo, tcode_str[tcode], tcode, fp->mode.hdr.src, ntohl(fp->mode.wreqq.data)); #endif if (rb->fc->status == FWBUSINIT) { aprint_error_dev(rb->fc->bdev, "cannot respond(bus reset)!\n"); return; } rb->xfer = fw_xfer_alloc(M_FW); 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_xferwake; */ rb->xfer->hand = fw_xfer_free; if (fw_asyreq(rb->fc, -1, rb->xfer)) { fw_xfer_free(rb->xfer); return; } return; } len = 0; for (i = 0; i < rb->nvec; i++) len += rb->vec[i].iov_len; mutex_enter(&bind->fwb_mtx); rb->xfer = STAILQ_FIRST(&bind->xferlist); if (rb->xfer == NULL) { mutex_exit(&bind->fwb_mtx); #if 1 aprint_error_dev(rb->fc->bdev, "Discard a packet for this bind.\n"); #endif return; } STAILQ_REMOVE_HEAD(&bind->xferlist, link); mutex_exit(&bind->fwb_mtx); fw_rcv_copy(rb); rb->xfer->hand(rb->xfer); return; default: aprint_error_dev(rb->fc->bdev, "unknow tcode %d\n", tcode); break; } } /* * 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; } 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; else xferqa = fc->ir; mutex_enter(&fc->fc_mtx); for (i = 0; i < fc->nisodma; i++) { xferq = xferqa[i]; if (!(xferq->flag & FWXFERQ_OPEN)) { xferq->flag |= FWXFERQ_OPEN; break; } } if (i == fc->nisodma) { aprint_error_dev(fc->bdev, "no free dma channel (tx=%d)\n", tx); i = -1; } mutex_exit(&fc->fc_mtx); return i; } /* * Async. request with given xfer structure. */ static void fw_asystart(struct fw_xfer *xfer) { struct firewire_comm *fc = xfer->fc; /* Protect from interrupt/timeout */ mutex_enter(&xfer->q->q_mtx); xfer->flag = FWXF_INQ; STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); #if 0 xfer->q->queued++; #endif mutex_exit(&xfer->q->q_mtx); /* XXX just queue for mbuf */ if (xfer->mbuf == NULL) xfer->q->start(fc); return; } static void firewire_xfer_timeout(struct firewire_comm *fc) { struct fw_xfer *xfer; 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); timersub(&tv, &split_timeout, &tv); STAILQ_INIT(&xfer_timeout); mutex_enter(&fc->tlabel_lock); for (i = 0; i < 0x40; i++) { while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { if ((xfer->flag & FWXF_SENT) == 0) /* not sent yet */ break; if (timercmp(&xfer->tv, &tv, >)) /* the rests are newer than this */ break; aprint_error_dev(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; STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); } } mutex_exit(&fc->tlabel_lock); fc->timeout(fc); STAILQ_FOREACH(xfer, &xfer_timeout, tlabel) xfer->hand(xfer); } #define WATCHDOG_HZ 10 static void firewire_watchdog(void *arg) { struct firewire_comm *fc; static int watchdog_clock = 0; fc = (struct firewire_comm *)arg; /* * At boot stage, the device interrupt is disabled and * We encounter a timeout easily. To avoid this, * ignore clock interrupt for a while. */ if (watchdog_clock > WATCHDOG_HZ * 15) firewire_xfer_timeout(fc); else watchdog_clock++; callout_schedule(&fc->timeout_callout, hz / WATCHDOG_HZ); } 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); #if 0 xferq->queued--; #endif xfer->resp = EAGAIN; xfer->flag = FWXF_SENTERR; fw_xfer_done(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 < 0x100/4 - 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) = 800 << 19; CSRARC(fc, CYCLE_TIME) = 0x0; CSRARC(fc, BUS_TIME) = 0x0; CSRARC(fc, BUS_MGR_ID) = 0x3f; CSRARC(fc, BANDWIDTH_AV) = 4915; CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; CSRARC(fc, IP_CHANNELS) = (1 << 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; memset(src, 0, 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; 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); memset(root, 0, sizeof(struct crom_chunk)); crom_add_chunk(src, NULL, root, 0); crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ /* private company_id */ crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); crom_add_simple_text(src, root, &buf->vendor, PROJECT_STR); crom_add_entry(root, CSRKEY_HW, __NetBSD_Version__); crom_add_simple_text(src, root, &buf->hw, hostname); } /* * dump packet header */ static void fw_dump_hdr(struct fw_pkt *fp, const 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; if (xfer->tl < 0) return; mutex_enter(&fc->tlabel_lock); #if 1 /* make sure the label is allocated */ STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) if (txfer == xfer) break; if (txfer == NULL) { mutex_exit(&fc->tlabel_lock); aprint_error_dev(fc->bdev, "the xfer is not in the queue (tlabel=%d, flag=0x%x)\n", xfer->tl, xfer->flag); fw_dump_hdr(&xfer->send.hdr, "send"); fw_dump_hdr(&xfer->recv.hdr, "recv"); KASSERT(FALSE); return; } #endif STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); mutex_exit(&fc->tlabel_lock); return; } /* * To obtain XFER structure by transaction label. */ static struct fw_xfer * fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) { struct fw_xfer *xfer; int req; mutex_enter(&fc->tlabel_lock); STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) if (xfer->send.hdr.mode.hdr.dst == node) { mutex_exit(&fc->tlabel_lock); KASSERT(xfer->tl == tlabel); /* extra sanity check */ req = xfer->send.hdr.mode.hdr.tcode; if (xfer->fc->tcode[req].valid_res != tcode) { aprint_error_dev(fc->bdev, "invalid response tcode (0x%x for 0x%x)\n", tcode, req); return NULL; } if (firewire_debug > 2) printf("fw_tl2xfer: found tl=%d\n", tlabel); return xfer; } mutex_exit(&fc->tlabel_lock); if (firewire_debug > 1) printf("fw_tl2xfer: not found tl=%d\n", tlabel); return NULL; } /* * 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_FW); 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] |= (root_node & 0x3f) << 24 | 1 << 23; if (gap_count >= 0) fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16; fp->mode.ld[2] = ~fp->mode.ld[1]; /* XXX Dangerous, how to pass PHY packet to device driver */ fp->mode.common.tcode |= FWTCODE_PHY; if (firewire_debug) printf("root_node=%d gap_count=%d\n", 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 probe devices on the IEEE1394 bus. */ static void fw_bus_probe(struct firewire_comm *fc) { struct fw_device *fwdev; mutex_enter(&fc->wait_lock); fc->status = FWBUSEXPLORE; /* Invalidate all devices, just after bus reset. */ if (firewire_debug) printf("iterate and invalidate all nodes\n"); mutex_enter(&fc->fc_mtx); STAILQ_FOREACH(fwdev, &fc->devices, link) if (fwdev->status != FWDEVINVAL) { fwdev->status = FWDEVINVAL; fwdev->rcnt = 0; if (firewire_debug) printf("Invalidate Dev ID: %08x%08x\n", fwdev->eui.hi, fwdev->eui.lo); } else if (firewire_debug) printf("Dev ID: %08x%08x already invalid\n", fwdev->eui.hi, fwdev->eui.lo); mutex_exit(&fc->fc_mtx); cv_signal(&fc->fc_cv); mutex_exit(&fc->wait_lock); } 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, (void *)&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; /* XXX check CRC */ 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) { aprint_error_dev(fwdev->fc->bdev, "invalid offset %d\n", 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; struct csrhdr *hdr; struct bus_info *binfo; uint32_t *csr, speed_test = 0; int err, node; fc = dfwdev->fc; csr = dfwdev->csrrom; node = dfwdev->dst; /* First quad */ err = fw_explore_read_quads(dfwdev, CSRROMOFF, csr, 1); if (err) { aprint_error_dev(fc->bdev, "node%d: explore_read_quads failure\n", node); dfwdev->status = FWDEVINVAL; return -1; } hdr = (struct csrhdr *)csr; if (hdr->info_len != 4) { if (firewire_debug) printf("node%d: wrong bus info len(%d)\n", node, hdr->info_len); dfwdev->status = FWDEVINVAL; return -1; } /* bus info */ err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); if (err) { aprint_error_dev(fc->bdev, "node%d: error reading 0x04\n", node); dfwdev->status = FWDEVINVAL; return -1; } binfo = (struct bus_info *)&csr[1]; if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { aprint_error_dev(fc->bdev, "node%d: invalid bus name 0x%08x\n", node, binfo->bus_name); dfwdev->status = FWDEVINVAL; return -1; } if (firewire_debug) printf("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", 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); mutex_enter(&fc->fc_mtx); STAILQ_FOREACH(fwdev, &fc->devices, link) if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) break; mutex_exit(&fc->fc_mtx); if (fwdev == NULL) { /* new device */ fwdev = malloc(sizeof(struct fw_device), M_FW, M_NOWAIT | M_ZERO); if (fwdev == NULL) { if (firewire_debug) printf("node%d: no memory\n", node); return -1; } fwdev->fc = fc; fwdev->eui = binfo->eui64; fwdev->dst = dfwdev->dst; fwdev->maxrec = dfwdev->maxrec; fwdev->status = FWDEVNEW; /* * 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 alltogether. SWB */ if (binfo->link_spd == FWSPD_S100 /* 0 */) { aprint_normal_dev(fc->bdev, "Pre 1394a-2000 detected\n"); 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) { aprint_error_dev(fc->bdev, "fwdev->speed(%s)" " decremented due to negotiation\n", fw_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; mutex_enter(&fc->fc_mtx); 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); mutex_exit(&fc->fc_mtx); aprint_normal_dev(fc->bdev, "New %s device ID:%08x%08x\n", fw_linkspeed[fwdev->speed], fwdev->eui.hi, fwdev->eui.lo); } else { fwdev->dst = node; fwdev->status = FWDEVINIT; /* unchanged ? */ if (memcmp(csr, fwdev->csrrom, sizeof(uint32_t) * 5) == 0) { if (firewire_debug) printf("node%d: crom unchanged\n", node); return 0; } } memset(fwdev->csrrom, 0, CROMSIZE); /* copy first quad and bus info block */ memcpy(fwdev->csrrom, csr, sizeof(uint32_t) * 5); fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ if (err) { if (firewire_debug) printf("explore csrblock failed err(%d)\n", 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) { struct fw_device *dfwdev; union fw_self_id *fwsid; int node, err, i, todo, todo2, trys; char nodes[63]; todo = 0; dfwdev = malloc(sizeof(*dfwdev), M_TEMP, M_NOWAIT); if (dfwdev == NULL) return; /* setup dummy fwdev */ dfwdev->fc = fc; dfwdev->speed = 0; dfwdev->maxrec = 8; /* 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) printf("found myself node(%d) fc->nodeid(%d)" " fc->max_node(%d)\n", node, fc->nodeid, fc->max_node); continue; } else if (firewire_debug) printf("node(%d) fc->max_node(%d) found\n", node, fc->max_node); fwsid = fw_find_self_id(fc, node); if (!fwsid || !fwsid->p0.link_active) { if (firewire_debug) printf("node%d: link down\n", node); continue; } nodes[todo++] = node; } for (trys = 0; todo > 0 && trys < 3; 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) printf("node %d, err = %d\n", nodes[i], err); } todo = todo2; } free(dfwdev, M_TEMP); } static void fw_bus_probe_thread(void *arg) { struct firewire_comm *fc = (struct firewire_comm *)arg; /* * Tell config we've scanned the bus. * * XXX This is not right -- we haven't actually scanned it. We * probably ought to call this after the first bus exploration. * * bool once = false; * ... * fw_attach_dev(fc); * if (!once) { * config_pending_decr(); * once = true; * } */ config_pending_decr(fc->bdev); mutex_enter(&fc->wait_lock); while (fc->status != FWBUSDETACH) { if (fc->status == FWBUSEXPLORE) { mutex_exit(&fc->wait_lock); fw_explore(fc); fc->status = FWBUSEXPDONE; if (firewire_debug) printf("bus_explore done\n"); fw_attach_dev(fc); mutex_enter(&fc->wait_lock); } cv_wait_sig(&fc->fc_cv, &fc->wait_lock); } fc->status = FWBUSDETACHOK; cv_signal(&fc->fc_cv); mutex_exit(&fc->wait_lock); kthread_exit(0); /* NOTREACHED */ } static const char * fw_get_devclass(struct fw_device *fwdev) { struct crom_context cc; struct csrreg *reg; crom_init_context(&cc, fwdev->csrrom); reg = crom_search_key(&cc, CSRKEY_VER); if (reg == NULL) return "null"; switch (reg->val) { case CSR_PROTAVC: return "av/c"; case CSR_PROTCAL: return "cal"; case CSR_PROTEHS: return "ehs"; case CSR_PROTHAVI: return "havi"; case CSR_PROTCAM104: return "cam104"; case CSR_PROTCAM120: return "cam120"; case CSR_PROTCAM130: return "cam130"; case CSR_PROTDPP: return "printer"; case CSR_PROTIICP: return "iicp"; case CSRVAL_T10SBP2: return "sbp"; default: if (firewire_debug) printf("%s: reg->val 0x%x\n", __func__, reg->val); return "sbp"; } } /* * To attach sub-devices layer onto IEEE1394 bus. */ static void fw_attach_dev(struct firewire_comm *fc) { struct firewire_softc *sc = device_private(fc->bdev); struct firewire_dev_list *devlist, *elm; struct fw_device *fwdev, *next; struct firewire_dev_comm *fdc; struct fw_attach_args fwa; int locs[IEEE1394IFCF_NLOCS]; fwa.name = "null"; fwa.fc = fc; mutex_enter(&fc->fc_mtx); for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { next = STAILQ_NEXT(fwdev, link); mutex_exit(&fc->fc_mtx); switch (fwdev->status) { case FWDEVNEW: devlist = malloc(sizeof(struct firewire_dev_list), M_DEVBUF, M_NOWAIT); if (devlist == NULL) { aprint_error_dev(fc->bdev, "memory allocation failed\n"); break; } locs[IEEE1394IFCF_EUIHI] = fwdev->eui.hi; locs[IEEE1394IFCF_EUILO] = fwdev->eui.lo; fwa.name = fw_get_devclass(fwdev); fwa.fwdev = fwdev; fwdev->dev = config_found_sm_loc(sc->dev, "ieee1394if", locs, &fwa, firewire_print, config_stdsubmatch); if (fwdev->dev == NULL) { free(devlist, M_DEVBUF); break; } devlist->fwdev = fwdev; devlist->dev = fwdev->dev; mutex_enter(&fc->fc_mtx); if (SLIST_EMPTY(&sc->devlist)) SLIST_INSERT_HEAD(&sc->devlist, devlist, link); else { for (elm = SLIST_FIRST(&sc->devlist); SLIST_NEXT(elm, link) != NULL; elm = SLIST_NEXT(elm, link)); SLIST_INSERT_AFTER(elm, devlist, link); } mutex_exit(&fc->fc_mtx); /* FALLTHROUGH */ case FWDEVINIT: case FWDEVATTACHED: fwdev->status = FWDEVATTACHED; break; case FWDEVINVAL: fwdev->rcnt++; if (firewire_debug) printf("fwdev->rcnt(%d), hold_count(%d)\n", fwdev->rcnt, hold_count); break; default: /* XXX */ break; } mutex_enter(&fc->fc_mtx); } mutex_exit(&fc->fc_mtx); SLIST_FOREACH(devlist, &sc->devlist, link) { fdc = device_private(devlist->dev); if (fdc->post_explore != NULL) fdc->post_explore(fdc); } for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { next = STAILQ_NEXT(fwdev, link); if (fwdev->rcnt > 0 && fwdev->rcnt > hold_count) { /* * Remove devices which have not been seen * for a while. */ SLIST_FOREACH(devlist, &sc->devlist, link) if (devlist->fwdev == fwdev) break; if (devlist == NULL) continue; if (devlist->fwdev != fwdev) panic("already detached"); SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list, link); free(devlist, M_DEVBUF); if (config_detach(fwdev->dev, DETACH_FORCE) != 0) return; STAILQ_REMOVE(&fc->devices, fwdev, fw_device, link); free(fwdev, M_FW); } } 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 & 0x3f; mutex_enter(&fc->tlabel_lock); new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) break; if (txfer == NULL) { fc->last_tlabel[dst] = new_tlabel; STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); mutex_exit(&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; } mutex_exit(&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; const 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; memcpy(p, rb->vec->iov_base, 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) { aprint_error_dev(rb->fc->bdev, "rcv buffer(%d) is %d bytes short.\n", rb->xfer->recv.pay_len, len - res); len = res; } if (p) { memcpy(p, rb->vec->iov_base, len); p += len; } res -= len; plen -= len; if (res == 0 || plen == 0) break; } rb->xfer->recv.pay_len -= res; } /* * 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: aprint_error_dev(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 = (struct firewire_comm *)arg; struct fw_pkt *fp; int err = 0; xfer = fw_xfer_alloc_buf(M_FW, 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; } /* * 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) { /* XXX check cmc bit of businfo block rather than contender */ if (self_id->p0.link_active && self_id->p0.contender) cmstr = fc->max_node; else { aprint_normal_dev(fc->bdev, "root node is not cycle master capable\n"); /* XXX shall we be the cycle master? */ cmstr = fc->nodeid; /* XXX need bus reset */ } } else cmstr = -1; aprint_normal_dev(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 */ memset(&fwdev, 0, 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; }