/* $NetBSD: if_qe.c,v 1.69 2009/03/18 16:00:20 cegger Exp $ */ /* * Copyright (c) 1999 Ludd, University of Lule}, Sweden. 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 following acknowledgement: * This product includes software developed at Ludd, University of * Lule}, Sweden and its contributors. * 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. */ /* * Driver for DEQNA/DELQA ethernet cards. * Things that is still to do: * Handle ubaresets. Does not work at all right now. * Fix ALLMULTI reception. But someone must tell me how... * Collect statistics. */ #include __KERNEL_RCSID(0, "$NetBSD: if_qe.c,v 1.69 2009/03/18 16:00:20 cegger Exp $"); #include "opt_inet.h" #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #include #endif #include #include #include #include "ioconf.h" #define RXDESCS 30 /* # of receive descriptors */ #define TXDESCS 60 /* # transmit descs */ /* * Structure containing the elements that must be in DMA-safe memory. */ struct qe_cdata { struct qe_ring qc_recv[RXDESCS+1]; /* Receive descriptors */ struct qe_ring qc_xmit[TXDESCS+1]; /* Transmit descriptors */ u_int8_t qc_setup[128]; /* Setup packet layout */ }; struct qe_softc { device_t sc_dev; /* Configuration common part */ struct uba_softc *sc_uh; /* our parent */ struct evcnt sc_intrcnt; /* Interrupt counting */ struct ethercom sc_ec; /* Ethernet common part */ #define sc_if sc_ec.ec_if /* network-visible interface */ bus_space_tag_t sc_iot; bus_addr_t sc_ioh; bus_dma_tag_t sc_dmat; struct qe_cdata *sc_qedata; /* Descriptor struct */ struct qe_cdata *sc_pqedata; /* Unibus address of above */ struct mbuf* sc_txmbuf[TXDESCS]; struct mbuf* sc_rxmbuf[RXDESCS]; bus_dmamap_t sc_xmtmap[TXDESCS]; bus_dmamap_t sc_rcvmap[RXDESCS]; bus_dmamap_t sc_nulldmamap; /* ethernet padding buffer */ struct ubinfo sc_ui; int sc_intvec; /* Interrupt vector */ int sc_nexttx; int sc_inq; int sc_lastack; int sc_nextrx; int sc_setup; /* Setup packet in queue */ }; static int qematch(device_t, cfdata_t, void *); static void qeattach(device_t, device_t, void *); static void qeinit(struct qe_softc *); static void qestart(struct ifnet *); static void qeintr(void *); static int qeioctl(struct ifnet *, u_long, void *); static int qe_add_rxbuf(struct qe_softc *, int); static void qe_setup(struct qe_softc *); static void qetimeout(struct ifnet *); CFATTACH_DECL_NEW(qe, sizeof(struct qe_softc), qematch, qeattach, NULL, NULL); #define QE_WCSR(csr, val) \ bus_space_write_2(sc->sc_iot, sc->sc_ioh, csr, val) #define QE_RCSR(csr) \ bus_space_read_2(sc->sc_iot, sc->sc_ioh, csr) #define LOWORD(x) ((int)(x) & 0xffff) #define HIWORD(x) (((int)(x) >> 16) & 0x3f) #define ETHER_PAD_LEN (ETHER_MIN_LEN - ETHER_CRC_LEN) /* * Check for present DEQNA. Done by sending a fake setup packet * and wait for interrupt. */ int qematch(device_t parent, cfdata_t cf, void *aux) { struct qe_softc ssc; struct qe_softc *sc = &ssc; struct uba_attach_args *ua = aux; struct uba_softc *uh = device_private(parent); struct ubinfo ui; #define PROBESIZE 4096 struct qe_ring *ring; struct qe_ring *rp; int error; ring = malloc(PROBESIZE, M_TEMP, M_WAITOK|M_ZERO); memset(sc, 0, sizeof(*sc)); sc->sc_iot = ua->ua_iot; sc->sc_ioh = ua->ua_ioh; sc->sc_dmat = ua->ua_dmat; uh->uh_lastiv -= 4; QE_WCSR(QE_CSR_CSR, QE_RESET); QE_WCSR(QE_CSR_VECTOR, uh->uh_lastiv); /* * Map the ring area. Actually this is done only to be able to * send and receive a internal packet; some junk is loopbacked * so that the DEQNA has a reason to interrupt. */ ui.ui_size = PROBESIZE; ui.ui_vaddr = (void *)&ring[0]; if ((error = uballoc(uh, &ui, UBA_CANTWAIT))) return 0; /* * Init a simple "fake" receive and transmit descriptor that * points to some unused area. Send a fake setup packet. */ rp = (void *)ui.ui_baddr; ring[0].qe_flag = ring[0].qe_status1 = QE_NOTYET; ring[0].qe_addr_lo = LOWORD(&rp[4]); ring[0].qe_addr_hi = HIWORD(&rp[4]) | QE_VALID | QE_EOMSG | QE_SETUP; ring[0].qe_buf_len = -64; ring[2].qe_flag = ring[2].qe_status1 = QE_NOTYET; ring[2].qe_addr_lo = LOWORD(&rp[4]); ring[2].qe_addr_hi = HIWORD(&rp[4]) | QE_VALID; ring[2].qe_buf_len = -(1500/2); QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET); DELAY(1000); /* * Start the interface and wait for the packet. */ QE_WCSR(QE_CSR_CSR, QE_INT_ENABLE|QE_XMIT_INT|QE_RCV_INT); QE_WCSR(QE_CSR_RCLL, LOWORD(&rp[2])); QE_WCSR(QE_CSR_RCLH, HIWORD(&rp[2])); QE_WCSR(QE_CSR_XMTL, LOWORD(rp)); QE_WCSR(QE_CSR_XMTH, HIWORD(rp)); DELAY(10000); /* * All done with the bus resources. */ ubfree(uh, &ui); free(ring, M_TEMP); return 1; } /* * Interface exists: make available by filling in network interface * record. System will initialize the interface when it is ready * to accept packets. */ void qeattach(device_t parent, device_t self, void *aux) { struct uba_attach_args *ua = aux; struct qe_softc *sc = device_private(self); struct ifnet *ifp = &sc->sc_if; struct qe_ring *rp; u_int8_t enaddr[ETHER_ADDR_LEN]; int i, error; char *nullbuf; sc->sc_dev = self; sc->sc_uh = device_private(parent); sc->sc_iot = ua->ua_iot; sc->sc_ioh = ua->ua_ioh; sc->sc_dmat = ua->ua_dmat; /* * Allocate DMA safe memory for descriptors and setup memory. */ sc->sc_ui.ui_size = sizeof(struct qe_cdata) + ETHER_PAD_LEN; if ((error = ubmemalloc(sc->sc_uh, &sc->sc_ui, 0))) { aprint_error(": unable to ubmemalloc(), error = %d\n", error); return; } sc->sc_pqedata = (struct qe_cdata *)sc->sc_ui.ui_baddr; sc->sc_qedata = (struct qe_cdata *)sc->sc_ui.ui_vaddr; /* * Zero the newly allocated memory. */ memset(sc->sc_qedata, 0, sizeof(struct qe_cdata) + ETHER_PAD_LEN); nullbuf = ((char*)sc->sc_qedata) + sizeof(struct qe_cdata); /* * Create the transmit descriptor DMA maps. We take advantage * of the fact that the Qbus address space is big, and therefore * allocate map registers for all transmit descriptors also, * so that we can avoid this each time we send a packet. */ for (i = 0; i < TXDESCS; i++) { if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, &sc->sc_xmtmap[i]))) { aprint_error( ": unable to create tx DMA map %d, error = %d\n", i, error); goto fail_4; } } /* * Create receive buffer DMA maps. */ for (i = 0; i < RXDESCS; i++) { if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &sc->sc_rcvmap[i]))) { aprint_error( ": unable to create rx DMA map %d, error = %d\n", i, error); goto fail_5; } } /* * Pre-allocate the receive buffers. */ for (i = 0; i < RXDESCS; i++) { if ((error = qe_add_rxbuf(sc, i)) != 0) { aprint_error( ": unable to allocate or map rx buffer %d," " error = %d\n", i, error); goto fail_6; } } if ((error = bus_dmamap_create(sc->sc_dmat, ETHER_PAD_LEN, 1, ETHER_PAD_LEN, 0, BUS_DMA_NOWAIT,&sc->sc_nulldmamap)) != 0) { aprint_error( ": unable to create pad buffer DMA map, error = %d\n", error); goto fail_6; } if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_nulldmamap, nullbuf, ETHER_PAD_LEN, NULL, BUS_DMA_NOWAIT)) != 0) { aprint_error( ": unable to load pad buffer DMA map, error = %d\n", error); goto fail_7; } bus_dmamap_sync(sc->sc_dmat, sc->sc_nulldmamap, 0, ETHER_PAD_LEN, BUS_DMASYNC_PREWRITE); /* * Create ring loops of the buffer chains. * This is only done once. */ rp = sc->sc_qedata->qc_recv; rp[RXDESCS].qe_addr_lo = LOWORD(&sc->sc_pqedata->qc_recv[0]); rp[RXDESCS].qe_addr_hi = HIWORD(&sc->sc_pqedata->qc_recv[0]) | QE_VALID | QE_CHAIN; rp[RXDESCS].qe_flag = rp[RXDESCS].qe_status1 = QE_NOTYET; rp = sc->sc_qedata->qc_xmit; rp[TXDESCS].qe_addr_lo = LOWORD(&sc->sc_pqedata->qc_xmit[0]); rp[TXDESCS].qe_addr_hi = HIWORD(&sc->sc_pqedata->qc_xmit[0]) | QE_VALID | QE_CHAIN; rp[TXDESCS].qe_flag = rp[TXDESCS].qe_status1 = QE_NOTYET; /* * Get the vector that were set at match time, and remember it. */ sc->sc_intvec = sc->sc_uh->uh_lastiv; QE_WCSR(QE_CSR_CSR, QE_RESET); DELAY(1000); QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET); /* * Read out ethernet address and tell which type this card is. */ for (i = 0; i < 6; i++) enaddr[i] = QE_RCSR(i * 2) & 0xff; QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec | 1); aprint_normal(": %s, hardware address %s\n", QE_RCSR(QE_CSR_VECTOR) & 1 ? "delqa":"deqna", ether_sprintf(enaddr)); QE_WCSR(QE_CSR_VECTOR, QE_RCSR(QE_CSR_VECTOR) & ~1); /* ??? */ uba_intr_establish(ua->ua_icookie, ua->ua_cvec, qeintr, sc, &sc->sc_intrcnt); evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt, device_xname(sc->sc_dev), "intr"); strcpy(ifp->if_xname, device_xname(sc->sc_dev)); ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_start = qestart; ifp->if_ioctl = qeioctl; ifp->if_watchdog = qetimeout; IFQ_SET_READY(&ifp->if_snd); /* * Attach the interface. */ if_attach(ifp); ether_ifattach(ifp, enaddr); return; /* * Free any resources we've allocated during the failed attach * attempt. Do this in reverse order and fall through. */ fail_7: bus_dmamap_destroy(sc->sc_dmat, sc->sc_nulldmamap); fail_6: for (i = 0; i < RXDESCS; i++) { if (sc->sc_rxmbuf[i] != NULL) { bus_dmamap_unload(sc->sc_dmat, sc->sc_rcvmap[i]); m_freem(sc->sc_rxmbuf[i]); } } fail_5: for (i = 0; i < RXDESCS; i++) { if (sc->sc_xmtmap[i] != NULL) bus_dmamap_destroy(sc->sc_dmat, sc->sc_xmtmap[i]); } fail_4: for (i = 0; i < TXDESCS; i++) { if (sc->sc_rcvmap[i] != NULL) bus_dmamap_destroy(sc->sc_dmat, sc->sc_rcvmap[i]); } } /* * Initialization of interface. */ void qeinit(struct qe_softc *sc) { struct ifnet *ifp = (struct ifnet *)&sc->sc_if; struct qe_cdata *qc = sc->sc_qedata; int i; /* * Reset the interface. */ QE_WCSR(QE_CSR_CSR, QE_RESET); DELAY(1000); QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET); QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec); sc->sc_nexttx = sc->sc_inq = sc->sc_lastack = 0; /* * Release and init transmit descriptors. */ for (i = 0; i < TXDESCS; i++) { if (sc->sc_txmbuf[i]) { bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[i]); m_freem(sc->sc_txmbuf[i]); sc->sc_txmbuf[i] = 0; } qc->qc_xmit[i].qe_addr_hi = 0; /* Clear valid bit */ qc->qc_xmit[i].qe_status1 = qc->qc_xmit[i].qe_flag = QE_NOTYET; } /* * Init receive descriptors. */ for (i = 0; i < RXDESCS; i++) qc->qc_recv[i].qe_status1 = qc->qc_recv[i].qe_flag = QE_NOTYET; sc->sc_nextrx = 0; /* * Write the descriptor addresses to the device. * Receiving packets will be enabled in the interrupt routine. */ QE_WCSR(QE_CSR_CSR, QE_INT_ENABLE|QE_XMIT_INT|QE_RCV_INT); QE_WCSR(QE_CSR_RCLL, LOWORD(sc->sc_pqedata->qc_recv)); QE_WCSR(QE_CSR_RCLH, HIWORD(sc->sc_pqedata->qc_recv)); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; /* * Send a setup frame. * This will start the transmit machinery as well. */ qe_setup(sc); } /* * Start output on interface. */ void qestart(struct ifnet *ifp) { struct qe_softc *sc = ifp->if_softc; struct qe_cdata *qc = sc->sc_qedata; paddr_t buffer; struct mbuf *m, *m0; int idx, len, s, i, totlen, buflen, error; short orword, csr; if ((QE_RCSR(QE_CSR_CSR) & QE_RCV_ENABLE) == 0) return; s = splnet(); while (sc->sc_inq < (TXDESCS - 1)) { if (sc->sc_setup) { qe_setup(sc); continue; } idx = sc->sc_nexttx; IFQ_POLL(&ifp->if_snd, m); if (m == 0) goto out; /* * Count number of mbufs in chain. * Always do DMA directly from mbufs, therefore the transmit * ring is really big. */ for (m0 = m, i = 0; m0; m0 = m0->m_next) if (m0->m_len) i++; if (m->m_pkthdr.len < ETHER_PAD_LEN) { buflen = ETHER_PAD_LEN; i++; } else buflen = m->m_pkthdr.len; if (i >= TXDESCS) panic("qestart"); if ((i + sc->sc_inq) >= (TXDESCS - 1)) { ifp->if_flags |= IFF_OACTIVE; goto out; } IFQ_DEQUEUE(&ifp->if_snd, m); #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m); #endif /* * m now points to a mbuf chain that can be loaded. * Loop around and set it. */ totlen = 0; for (m0 = m; ; m0 = m0->m_next) { if (m0) { if (m0->m_len == 0) continue; error = bus_dmamap_load(sc->sc_dmat, sc->sc_xmtmap[idx], mtod(m0, void *), m0->m_len, 0, 0); buffer = sc->sc_xmtmap[idx]->dm_segs[0].ds_addr; len = m0->m_len; } else if (totlen < ETHER_PAD_LEN) { buffer = sc->sc_nulldmamap->dm_segs[0].ds_addr; len = ETHER_PAD_LEN - totlen; } else { break; } totlen += len; /* Word alignment calc */ orword = 0; if (totlen == buflen) { orword |= QE_EOMSG; sc->sc_txmbuf[idx] = m; } if ((buffer & 1) || (len & 1)) len += 2; if (buffer & 1) orword |= QE_ODDBEGIN; if ((buffer + len) & 1) orword |= QE_ODDEND; qc->qc_xmit[idx].qe_buf_len = -(len/2); qc->qc_xmit[idx].qe_addr_lo = LOWORD(buffer); qc->qc_xmit[idx].qe_addr_hi = HIWORD(buffer); qc->qc_xmit[idx].qe_flag = qc->qc_xmit[idx].qe_status1 = QE_NOTYET; qc->qc_xmit[idx].qe_addr_hi |= (QE_VALID | orword); if (++idx == TXDESCS) idx = 0; sc->sc_inq++; if (m0 == NULL) break; } #ifdef DIAGNOSTIC if (totlen != buflen) panic("qestart: len fault"); #endif /* * Kick off the transmit logic, if it is stopped. */ csr = QE_RCSR(QE_CSR_CSR); if (csr & QE_XL_INVALID) { QE_WCSR(QE_CSR_XMTL, LOWORD(&sc->sc_pqedata->qc_xmit[sc->sc_nexttx])); QE_WCSR(QE_CSR_XMTH, HIWORD(&sc->sc_pqedata->qc_xmit[sc->sc_nexttx])); } sc->sc_nexttx = idx; } if (sc->sc_inq == (TXDESCS - 1)) ifp->if_flags |= IFF_OACTIVE; out: if (sc->sc_inq) ifp->if_timer = 5; /* If transmit logic dies */ splx(s); } static void qeintr(void *arg) { struct qe_softc *sc = arg; struct qe_cdata *qc = sc->sc_qedata; struct ifnet *ifp = &sc->sc_if; struct mbuf *m; int csr, status1, status2, len; csr = QE_RCSR(QE_CSR_CSR); QE_WCSR(QE_CSR_CSR, QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | QE_RCV_INT | QE_ILOOP); if (csr & QE_RCV_INT) while (qc->qc_recv[sc->sc_nextrx].qe_status1 != QE_NOTYET) { status1 = qc->qc_recv[sc->sc_nextrx].qe_status1; status2 = qc->qc_recv[sc->sc_nextrx].qe_status2; m = sc->sc_rxmbuf[sc->sc_nextrx]; len = ((status1 & QE_RBL_HI) | (status2 & QE_RBL_LO)) + 60; qe_add_rxbuf(sc, sc->sc_nextrx); m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = m->m_len = len; if (++sc->sc_nextrx == RXDESCS) sc->sc_nextrx = 0; #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m); #endif if ((status1 & QE_ESETUP) == 0) (*ifp->if_input)(ifp, m); else m_freem(m); } if (csr & (QE_XMIT_INT|QE_XL_INVALID)) { while (qc->qc_xmit[sc->sc_lastack].qe_status1 != QE_NOTYET) { int idx = sc->sc_lastack; sc->sc_inq--; if (++sc->sc_lastack == TXDESCS) sc->sc_lastack = 0; /* XXX collect statistics */ qc->qc_xmit[idx].qe_addr_hi &= ~QE_VALID; qc->qc_xmit[idx].qe_status1 = qc->qc_xmit[idx].qe_flag = QE_NOTYET; if (qc->qc_xmit[idx].qe_addr_hi & QE_SETUP) continue; if (sc->sc_txmbuf[idx] == NULL || sc->sc_txmbuf[idx]->m_pkthdr.len < ETHER_PAD_LEN) bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[idx]); if (sc->sc_txmbuf[idx]) { m_freem(sc->sc_txmbuf[idx]); sc->sc_txmbuf[idx] = NULL; } } ifp->if_timer = 0; ifp->if_flags &= ~IFF_OACTIVE; qestart(ifp); /* Put in more in queue */ } /* * How can the receive list get invalid??? * Verified that it happens anyway. */ if ((qc->qc_recv[sc->sc_nextrx].qe_status1 == QE_NOTYET) && (QE_RCSR(QE_CSR_CSR) & QE_RL_INVALID)) { QE_WCSR(QE_CSR_RCLL, LOWORD(&sc->sc_pqedata->qc_recv[sc->sc_nextrx])); QE_WCSR(QE_CSR_RCLH, HIWORD(&sc->sc_pqedata->qc_recv[sc->sc_nextrx])); } } /* * Process an ioctl request. */ int qeioctl(struct ifnet *ifp, u_long cmd, void *data) { struct qe_softc *sc = ifp->if_softc; struct ifaddr *ifa = (struct ifaddr *)data; int s = splnet(), error = 0; switch (cmd) { case SIOCINITIFADDR: ifp->if_flags |= IFF_UP; switch(ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: qeinit(sc); arp_ifinit(ifp, ifa); break; #endif } break; case SIOCSIFFLAGS: if ((error = ifioctl_common(ifp, cmd, data)) != 0) break; /* XXX re-use ether_ioctl() */ switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { case IFF_RUNNING: /* * If interface is marked down and it is running, * stop it. (by disabling receive mechanism). */ QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RCV_ENABLE); ifp->if_flags &= ~IFF_RUNNING; break; case IFF_UP: /* * If interface it marked up and it is stopped, then * start it. */ qeinit(sc); break; case IFF_UP|IFF_RUNNING: /* * Send a new setup packet to match any new changes. * (Like IFF_PROMISC etc) */ qe_setup(sc); break; case 0: break; } break; case SIOCADDMULTI: case SIOCDELMULTI: /* * Update our multicast list. */ if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { /* * Multicast list has changed; set the hardware filter * accordingly. */ if (ifp->if_flags & IFF_RUNNING) qe_setup(sc); error = 0; } break; default: error = ether_ioctl(ifp, cmd, data); } splx(s); return (error); } /* * Add a receive buffer to the indicated descriptor. */ int qe_add_rxbuf(struct qe_softc *sc, int i) { struct mbuf *m; struct qe_ring *rp; vaddr_t addr; int error; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) return (ENOBUFS); MCLGET(m, M_DONTWAIT); if ((m->m_flags & M_EXT) == 0) { m_freem(m); return (ENOBUFS); } if (sc->sc_rxmbuf[i] != NULL) bus_dmamap_unload(sc->sc_dmat, sc->sc_rcvmap[i]); error = bus_dmamap_load(sc->sc_dmat, sc->sc_rcvmap[i], m->m_ext.ext_buf, m->m_ext.ext_size, NULL, BUS_DMA_NOWAIT); if (error) panic("%s: can't load rx DMA map %d, error = %d", device_xname(sc->sc_dev), i, error); sc->sc_rxmbuf[i] = m; bus_dmamap_sync(sc->sc_dmat, sc->sc_rcvmap[i], 0, sc->sc_rcvmap[i]->dm_mapsize, BUS_DMASYNC_PREREAD); /* * We know that the mbuf cluster is page aligned. Also, be sure * that the IP header will be longword aligned. */ m->m_data += 2; addr = sc->sc_rcvmap[i]->dm_segs[0].ds_addr + 2; rp = &sc->sc_qedata->qc_recv[i]; rp->qe_flag = rp->qe_status1 = QE_NOTYET; rp->qe_addr_lo = LOWORD(addr); rp->qe_addr_hi = HIWORD(addr) | QE_VALID; rp->qe_buf_len = -(m->m_ext.ext_size - 2)/2; return (0); } /* * Create a setup packet and put in queue for sending. */ void qe_setup(struct qe_softc *sc) { struct ether_multi *enm; struct ether_multistep step; struct qe_cdata *qc = sc->sc_qedata; struct ifnet *ifp = &sc->sc_if; u_int8_t enaddr[ETHER_ADDR_LEN]; int i, j, k, idx, s; s = splnet(); if (sc->sc_inq == (TXDESCS - 1)) { sc->sc_setup = 1; splx(s); return; } sc->sc_setup = 0; /* * Init the setup packet with valid info. */ memset(qc->qc_setup, 0xff, sizeof(qc->qc_setup)); /* Broadcast */ memcpy(enaddr, CLLADDR(ifp->if_sadl), sizeof(enaddr)); for (i = 0; i < ETHER_ADDR_LEN; i++) qc->qc_setup[i * 8 + 1] = enaddr[i]; /* Own address */ /* * Multicast handling. The DEQNA can handle up to 12 direct * ethernet addresses. */ j = 3; k = 0; ifp->if_flags &= ~IFF_ALLMULTI; ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); while (enm != NULL) { if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6)) { ifp->if_flags |= IFF_ALLMULTI; break; } for (i = 0; i < ETHER_ADDR_LEN; i++) qc->qc_setup[i * 8 + j + k] = enm->enm_addrlo[i]; j++; if (j == 8) { j = 1; k += 64; } if (k > 64) { ifp->if_flags |= IFF_ALLMULTI; break; } ETHER_NEXT_MULTI(step, enm); } idx = sc->sc_nexttx; qc->qc_xmit[idx].qe_buf_len = -64; /* * How is the DEQNA turned in ALLMULTI mode??? * Until someone tells me, fall back to PROMISC when more than * 12 ethernet addresses. */ if (ifp->if_flags & IFF_ALLMULTI) ifp->if_flags |= IFF_PROMISC; else if (ifp->if_pcount == 0) ifp->if_flags &= ~IFF_PROMISC; if (ifp->if_flags & IFF_PROMISC) qc->qc_xmit[idx].qe_buf_len = -65; qc->qc_xmit[idx].qe_addr_lo = LOWORD(sc->sc_pqedata->qc_setup); qc->qc_xmit[idx].qe_addr_hi = HIWORD(sc->sc_pqedata->qc_setup) | QE_SETUP | QE_EOMSG; qc->qc_xmit[idx].qe_status1 = qc->qc_xmit[idx].qe_flag = QE_NOTYET; qc->qc_xmit[idx].qe_addr_hi |= QE_VALID; if (QE_RCSR(QE_CSR_CSR) & QE_XL_INVALID) { QE_WCSR(QE_CSR_XMTL, LOWORD(&sc->sc_pqedata->qc_xmit[idx])); QE_WCSR(QE_CSR_XMTH, HIWORD(&sc->sc_pqedata->qc_xmit[idx])); } sc->sc_inq++; if (++sc->sc_nexttx == TXDESCS) sc->sc_nexttx = 0; splx(s); } /* * Check for dead transmit logic. Not uncommon. */ void qetimeout(struct ifnet *ifp) { struct qe_softc *sc = ifp->if_softc; if (sc->sc_inq == 0) return; aprint_error_dev(sc->sc_dev, "xmit logic died, resetting...\n"); /* * Do a reset of interface, to get it going again. * Will it work by just restart the transmit logic? */ qeinit(sc); }