/* $NetBSD: am79900.c,v 1.31 2020/10/20 18:17:58 roy Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * * 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)if_le.c 8.2 (Berkeley) 11/16/93 */ /*- * Copyright (c) 1998 * Matthias Drochner. All rights reserved. * Copyright (c) 1995 Charles M. Hannum. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * * 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 by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)if_le.c 8.2 (Berkeley) 11/16/93 */ #include __KERNEL_RCSID(0, "$NetBSD: am79900.c,v 1.31 2020/10/20 18:17:58 roy Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void am79900_meminit(struct lance_softc *); static void am79900_start(struct ifnet *); #if defined(_KERNEL_OPT) #include "opt_ddb.h" #endif #ifdef LEDEBUG static void am79900_recv_print(struct lance_softc *, int); static void am79900_xmit_print(struct lance_softc *, int); #endif #define ifp (&sc->sc_ethercom.ec_if) void am79900_config(struct am79900_softc *sc) { int mem, i; sc->lsc.sc_meminit = am79900_meminit; sc->lsc.sc_start = am79900_start; lance_config(&sc->lsc); if_deferred_start_init(&sc->lsc.sc_ethercom.ec_if, NULL); mem = 0; sc->lsc.sc_initaddr = mem; mem += sizeof(struct leinit); sc->lsc.sc_rmdaddr = mem; mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf; sc->lsc.sc_tmdaddr = mem; mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf; for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN) sc->lsc.sc_rbufaddr[i] = mem; for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN) sc->lsc.sc_tbufaddr[i] = mem; if (mem > sc->lsc.sc_memsize) panic("%s: memsize", device_xname(sc->lsc.sc_dev)); } /* * Set up the initialization block and the descriptor rings. */ static void am79900_meminit(struct lance_softc *sc) { u_long a; int bix; struct leinit init; struct lermd rmd; struct letmd tmd; uint8_t *myaddr; if (ifp->if_flags & IFF_PROMISC) init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM; else init.init_mode = LE_MODE_NORMAL; if (sc->sc_initmodemedia == 1) init.init_mode |= LE_MODE_PSEL0; init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28) | ((ffs(sc->sc_nrbuf) - 1) << 20); /* * Update our private copy of the Ethernet address. * We NEED the copy so we can ensure its alignment! */ memcpy(sc->sc_enaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN); myaddr = sc->sc_enaddr; init.init_padr[0] = myaddr[0] | (myaddr[1] << 8) | (myaddr[2] << 16) | (myaddr[3] << 24); init.init_padr[1] = myaddr[4] | (myaddr[5] << 8); lance_setladrf(&sc->sc_ethercom, init.init_ladrf); sc->sc_last_rd = 0; sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0; a = sc->sc_addr + LE_RMDADDR(sc, 0); init.init_rdra = a; a = sc->sc_addr + LE_TMDADDR(sc, 0); init.init_tdra = a; (*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init)); /* * Set up receive ring descriptors. */ for (bix = 0; bix < sc->sc_nrbuf; bix++) { a = sc->sc_addr + LE_RBUFADDR(sc, bix); rmd.rmd0 = a; rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); rmd.rmd2 = 0; rmd.rmd3 = 0; (*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix), sizeof(rmd)); } /* * Set up transmit ring descriptors. */ for (bix = 0; bix < sc->sc_ntbuf; bix++) { a = sc->sc_addr + LE_TBUFADDR(sc, bix); tmd.tmd0 = a; tmd.tmd1 = LE_T1_ONES; tmd.tmd2 = 0; tmd.tmd3 = 0; (*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix), sizeof(tmd)); } } static inline void am79900_rint(struct lance_softc *sc) { int bix; int rp; struct lermd rmd; bix = sc->sc_last_rd; /* Process all buffers with valid data. */ for (;;) { rp = LE_RMDADDR(sc, bix); (*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd)); if (rmd.rmd1 & LE_R1_OWN) break; if (rmd.rmd1 & LE_R1_ERR) { if (rmd.rmd1 & LE_R1_ENP) { #ifdef LEDEBUG if ((rmd.rmd1 & LE_R1_OFLO) == 0) { if (rmd.rmd1 & LE_R1_FRAM) printf("%s: framing error\n", device_xname(sc->sc_dev)); if (rmd.rmd1 & LE_R1_CRC) printf("%s: crc mismatch\n", device_xname(sc->sc_dev)); } #endif } else { if (rmd.rmd1 & LE_R1_OFLO) printf("%s: overflow\n", device_xname(sc->sc_dev)); } if (rmd.rmd1 & LE_R1_BUFF) printf("%s: receive buffer error\n", device_xname(sc->sc_dev)); if_statinc(ifp, if_ierrors); } else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) != (LE_R1_STP | LE_R1_ENP)) { printf("%s: dropping chained buffer\n", device_xname(sc->sc_dev)); if_statinc(ifp, if_ierrors); } else { #ifdef LEDEBUG if (sc->sc_debug) am79900_recv_print(sc, sc->sc_last_rd); #endif lance_read(sc, LE_RBUFADDR(sc, bix), (rmd.rmd2 & 0xfff) - 4); } rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); rmd.rmd2 = 0; rmd.rmd3 = 0; (*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd)); #ifdef LEDEBUG if (sc->sc_debug) printf("sc->sc_last_rd = %x, rmd: " "adr %08x, flags/blen %08x\n", sc->sc_last_rd, rmd.rmd0, rmd.rmd1); #endif if (++bix == sc->sc_nrbuf) bix = 0; } sc->sc_last_rd = bix; } static inline void am79900_tint(struct lance_softc *sc) { int bix; struct letmd tmd; bix = sc->sc_first_td; for (;;) { if (sc->sc_no_td <= 0) break; (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix), sizeof(tmd)); #ifdef LEDEBUG if (sc->sc_debug) printf("trans tmd: " "adr %08x, flags/blen %08x\n", tmd.tmd0, tmd.tmd1); #endif if (tmd.tmd1 & LE_T1_OWN) break; if (tmd.tmd1 & LE_T1_ERR) { if (tmd.tmd2 & LE_T2_BUFF) printf("%s: transmit buffer error\n", device_xname(sc->sc_dev)); else if (tmd.tmd2 & LE_T2_UFLO) printf("%s: underflow\n", device_xname(sc->sc_dev)); if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) { lance_reset(sc); return; } if (tmd.tmd2 & LE_T2_LCAR) { sc->sc_havecarrier = 0; if (sc->sc_nocarrier) (*sc->sc_nocarrier)(sc); else printf("%s: lost carrier\n", device_xname(sc->sc_dev)); } if (tmd.tmd2 & LE_T2_LCOL) if_statinc(ifp, if_collisions); if (tmd.tmd2 & LE_T2_RTRY) { #ifdef LEDEBUG printf("%s: excessive collisions\n", device_xname(sc->sc_dev)); #endif if_statadd(ifp, if_collisions, 16); } if_statinc(ifp, if_oerrors); } else { if (tmd.tmd1 & LE_T1_ONE) if_statinc(ifp, if_collisions); else if (tmd.tmd1 & LE_T1_MORE) /* Real number is unknown. */ if_statadd(ifp, if_collisions, 2); if_statinc(ifp, if_opackets); } if (++bix == sc->sc_ntbuf) bix = 0; --sc->sc_no_td; } sc->sc_first_td = bix; if_schedule_deferred_start(ifp); if (sc->sc_no_td == 0) ifp->if_timer = 0; } /* * Controller interrupt. */ int am79900_intr(void *arg) { struct lance_softc *sc = arg; uint16_t isr; isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0; sc->sc_saved_csr0 = 0; #if defined(LEDEBUG) && LEDEBUG > 1 if (sc->sc_debug) printf("%s: am79900_intr entering with isr=%04x\n", device_xname(sc->sc_dev), isr); #endif if ((isr & LE_C0_INTR) == 0) return (0); (*sc->sc_wrcsr)(sc, LE_CSR0, isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR | LE_C0_RINT | LE_C0_TINT | LE_C0_IDON)); if (isr & LE_C0_ERR) { if (isr & LE_C0_BABL) { #ifdef LEDEBUG printf("%s: babble\n", device_xname(sc->sc_dev)); #endif if_statinc(ifp, if_oerrors); } #if 0 if (isr & LE_C0_CERR) { printf("%s: collision error\n", device_xname(sc->sc_dev)); if_statinc(ifp, if_collisions); } #endif if (isr & LE_C0_MISS) { #ifdef LEDEBUG printf("%s: missed packet\n", device_xname(sc->sc_dev)); #endif if_statinc(ifp, if_ierrors); } if (isr & LE_C0_MERR) { printf("%s: memory error\n", device_xname(sc->sc_dev)); lance_reset(sc); return (1); } } if ((isr & LE_C0_RXON) == 0) { printf("%s: receiver disabled\n", device_xname(sc->sc_dev)); if_statinc(ifp, if_ierrors); lance_reset(sc); return (1); } if ((isr & LE_C0_TXON) == 0) { printf("%s: transmitter disabled\n", device_xname(sc->sc_dev)); if_statinc(ifp, if_oerrors); lance_reset(sc); return (1); } /* * Pretend we have carrier; if we don't this will be cleared * shortly. */ const int ocarrier = sc->sc_havecarrier; sc->sc_havecarrier = 1; if (isr & LE_C0_RINT) am79900_rint(sc); if (isr & LE_C0_TINT) am79900_tint(sc); if (sc->sc_havecarrier != ocarrier) if_link_state_change(ifp, sc->sc_havecarrier ? LINK_STATE_UP : LINK_STATE_DOWN); rnd_add_uint32(&sc->rnd_source, isr); return (1); } #undef ifp /* * Setup output on interface. * Get another datagram to send off of the interface queue, and map it to the * interface before starting the output. * Called only at splnet or interrupt level. */ static void am79900_start(struct ifnet *ifp) { struct lance_softc *sc = ifp->if_softc; int bix; struct mbuf *m; struct letmd tmd; int rp; int len; if ((ifp->if_flags & IFF_RUNNING) != IFF_RUNNING) return; bix = sc->sc_last_td; while (sc->sc_no_td < sc->sc_ntbuf) { rp = LE_TMDADDR(sc, bix); (*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd)); if (tmd.tmd1 & LE_T1_OWN) { printf("%s: missing buffer, no_td = %d, last_td = %d\n", device_xname(sc->sc_dev), sc->sc_no_td, sc->sc_last_td); break; } IFQ_DEQUEUE(&ifp->if_snd, m); if (m == 0) break; /* * If BPF is listening on this interface, let it see the packet * before we commit it to the wire. */ bpf_mtap(ifp, m, BPF_D_OUT); /* * Copy the mbuf chain into the transmit buffer. */ len = lance_put(sc, LE_TBUFADDR(sc, bix), m); #ifdef LEDEBUG if (len > ETHERMTU + sizeof(struct ether_header)) printf("packet length %d\n", len); #endif ifp->if_timer = 5; /* * Init transmit registers, and set transmit start flag. */ tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff); tmd.tmd2 = 0; tmd.tmd3 = 0; (*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd)); #ifdef LEDEBUG if (sc->sc_debug) am79900_xmit_print(sc, sc->sc_last_td); #endif (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD); if (++bix == sc->sc_ntbuf) bix = 0; sc->sc_no_td++; } sc->sc_last_td = bix; } #ifdef LEDEBUG static void am79900_recv_print(struct lance_softc *sc, int no) { struct lermd rmd; uint16_t len; struct ether_header eh; (*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd)); len = (rmd.rmd2 & 0xfff) - 4; printf("%s: receive buffer %d, len = %d\n", device_xname(sc->sc_dev), no, len); printf("%s: status %04x\n", device_xname(sc->sc_dev), (*sc->sc_rdcsr)(sc, LE_CSR0)); printf("%s: adr %08x, flags/blen %08x\n", device_xname(sc->sc_dev), rmd.rmd0, rmd.rmd1); if (len >= sizeof(eh)) { (*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh)); printf("%s: dst %s", device_xname(sc->sc_dev), ether_sprintf(eh.ether_dhost)); printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), ntohs(eh.ether_type)); } } static void am79900_xmit_print(struct lance_softc *sc, int no) { struct letmd tmd; uint16_t len; struct ether_header eh; (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd)); len = -(tmd.tmd1 & 0xfff); printf("%s: transmit buffer %d, len = %d\n", device_xname(sc->sc_dev), no, len); printf("%s: status %04x\n", device_xname(sc->sc_dev), (*sc->sc_rdcsr)(sc, LE_CSR0)); printf("%s: adr %08x, flags/blen %08x\n", device_xname(sc->sc_dev), tmd.tmd0, tmd.tmd1); if (len >= sizeof(eh)) { (*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh)); printf("%s: dst %s", device_xname(sc->sc_dev), ether_sprintf(eh.ether_dhost)); printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), ntohs(eh.ether_type)); } } #endif /* LEDEBUG */