/* $NetBSD: i82557.c,v 1.27 2000/05/19 16:00:30 jhawk Exp $ */ /*- * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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 NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 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) 1995, David Greenman * 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 unmodified, 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 AUTHOR 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 AUTHOR 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. * * Id: if_fxp.c,v 1.47 1998/01/08 23:42:29 eivind Exp */ /* * Device driver for the Intel i82557 fast Ethernet controller, * and its successors, the i82558 and i82559. */ #include "opt_inet.h" #include "opt_ns.h" #include "bpfilter.h" #include "rnd.h" #include #include #include #include #include #include #include #include #include #include #include #include /* for PAGE_SIZE */ #if NRND > 0 #include #endif #include #include #include #include #if NBPFILTER > 0 #include #endif #ifdef INET #include #include #endif #ifdef NS #include #include #endif #include #include #include #include #include /* * NOTE! On the Alpha, we have an alignment constraint. The * card DMAs the packet immediately following the RFA. However, * the first thing in the packet is a 14-byte Ethernet header. * This means that the packet is misaligned. To compensate, * we actually offset the RFA 2 bytes into the cluster. This * alignes the packet after the Ethernet header at a 32-bit * boundary. HOWEVER! This means that the RFA is misaligned! */ #define RFA_ALIGNMENT_FUDGE 2 /* * Template for default configuration parameters. * See struct fxp_cb_config for the bit definitions. */ u_int8_t fxp_cb_config_template[] = { 0x0, 0x0, /* cb_status */ 0x80, 0x2, /* cb_command */ 0xff, 0xff, 0xff, 0xff, /* link_addr */ 0x16, /* 0 */ 0x8, /* 1 */ 0x0, /* 2 */ 0x0, /* 3 */ 0x0, /* 4 */ 0x80, /* 5 */ 0xb2, /* 6 */ 0x3, /* 7 */ 0x1, /* 8 */ 0x0, /* 9 */ 0x26, /* 10 */ 0x0, /* 11 */ 0x60, /* 12 */ 0x0, /* 13 */ 0xf2, /* 14 */ 0x48, /* 15 */ 0x0, /* 16 */ 0x40, /* 17 */ 0xf3, /* 18 */ 0x0, /* 19 */ 0x3f, /* 20 */ 0x5 /* 21 */ }; void fxp_mii_initmedia __P((struct fxp_softc *)); int fxp_mii_mediachange __P((struct ifnet *)); void fxp_mii_mediastatus __P((struct ifnet *, struct ifmediareq *)); void fxp_80c24_initmedia __P((struct fxp_softc *)); int fxp_80c24_mediachange __P((struct ifnet *)); void fxp_80c24_mediastatus __P((struct ifnet *, struct ifmediareq *)); inline void fxp_scb_wait __P((struct fxp_softc *)); void fxp_start __P((struct ifnet *)); int fxp_ioctl __P((struct ifnet *, u_long, caddr_t)); int fxp_init __P((struct fxp_softc *)); void fxp_rxdrain __P((struct fxp_softc *)); void fxp_stop __P((struct fxp_softc *, int)); void fxp_watchdog __P((struct ifnet *)); int fxp_add_rfabuf __P((struct fxp_softc *, bus_dmamap_t, int)); int fxp_mdi_read __P((struct device *, int, int)); void fxp_statchg __P((struct device *)); void fxp_mdi_write __P((struct device *, int, int, int)); void fxp_autosize_eeprom __P((struct fxp_softc*)); void fxp_read_eeprom __P((struct fxp_softc *, u_int16_t *, int, int)); void fxp_get_info __P((struct fxp_softc *, u_int8_t *)); void fxp_tick __P((void *)); void fxp_mc_setup __P((struct fxp_softc *)); void fxp_shutdown __P((void *)); void fxp_power __P((int, void *)); int fxp_copy_small = 0; struct fxp_phytype { int fp_phy; /* type of PHY, -1 for MII at the end. */ void (*fp_init) __P((struct fxp_softc *)); } fxp_phytype_table[] = { { FXP_PHY_80C24, fxp_80c24_initmedia }, { -1, fxp_mii_initmedia }, }; /* * Set initial transmit threshold at 64 (512 bytes). This is * increased by 64 (512 bytes) at a time, to maximum of 192 * (1536 bytes), if an underrun occurs. */ static int tx_threshold = 64; /* * Wait for the previous command to be accepted (but not necessarily * completed). */ inline void fxp_scb_wait(sc) struct fxp_softc *sc; { int i = 10000; while (CSR_READ_1(sc, FXP_CSR_SCB_COMMAND) && --i) delay(2); if (i == 0) printf("%s: WARNING: SCB timed out!\n", sc->sc_dev.dv_xname); } /* * Finish attaching an i82557 interface. Called by bus-specific front-end. */ void fxp_attach(sc) struct fxp_softc *sc; { u_int8_t enaddr[6]; struct ifnet *ifp; bus_dma_segment_t seg; int rseg, i, error; struct fxp_phytype *fp; callout_init(&sc->sc_callout); /* * Allocate the control data structures, and create and load the * DMA map for it. */ if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct fxp_control_data), PAGE_SIZE, 0, &seg, 1, &rseg, 0)) != 0) { printf("%s: unable to allocate control data, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_0; } if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, sizeof(struct fxp_control_data), (caddr_t *)&sc->sc_control_data, BUS_DMA_COHERENT)) != 0) { printf("%s: unable to map control data, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_1; } sc->sc_cdseg = seg; sc->sc_cdnseg = rseg; bzero(sc->sc_control_data, sizeof(struct fxp_control_data)); if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct fxp_control_data), 1, sizeof(struct fxp_control_data), 0, 0, &sc->sc_dmamap)) != 0) { printf("%s: unable to create control data DMA map, " "error = %d\n", sc->sc_dev.dv_xname, error); goto fail_2; } if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, sc->sc_control_data, sizeof(struct fxp_control_data), NULL, 0)) != 0) { printf("%s: can't load control data DMA map, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_3; } /* * Create the transmit buffer DMA maps. */ for (i = 0; i < FXP_NTXCB; i++) { if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, FXP_NTXSEG, MCLBYTES, 0, 0, &FXP_DSTX(sc, i)->txs_dmamap)) != 0) { printf("%s: unable to create tx DMA map %d, " "error = %d\n", sc->sc_dev.dv_xname, i, error); goto fail_4; } } /* * Create the receive buffer DMA maps. */ for (i = 0; i < FXP_NRFABUFS; i++) { if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, 0, &sc->sc_rxmaps[i])) != 0) { printf("%s: unable to create rx DMA map %d, " "error = %d\n", sc->sc_dev.dv_xname, i, error); goto fail_5; } } /* Initialize MAC address and media structures. */ fxp_get_info(sc, enaddr); printf("%s: Ethernet address %s, %s Mb/s\n", sc->sc_dev.dv_xname, ether_sprintf(enaddr), sc->phy_10Mbps_only ? "10" : "10/100"); ifp = &sc->sc_ethercom.ec_if; /* * Get info about our media interface, and initialize it. Note * the table terminates itself with a phy of -1, indicating * that we're using MII. */ for (fp = fxp_phytype_table; fp->fp_phy != -1; fp++) if (fp->fp_phy == sc->phy_primary_device) break; (*fp->fp_init)(sc); bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = fxp_ioctl; ifp->if_start = fxp_start; ifp->if_watchdog = fxp_watchdog; /* * Attach the interface. */ if_attach(ifp); ether_ifattach(ifp, enaddr); #if NBPFILTER > 0 bpfattach(&sc->sc_ethercom.ec_if.if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); #endif #if NRND > 0 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, RND_TYPE_NET, 0); #endif /* * Add shutdown hook so that DMA is disabled prior to reboot. Not * doing do could allow DMA to corrupt kernel memory during the * reboot before the driver initializes. */ sc->sc_sdhook = shutdownhook_establish(fxp_shutdown, sc); if (sc->sc_sdhook == NULL) printf("%s: WARNING: unable to establish shutdown hook\n", sc->sc_dev.dv_xname); /* * Add suspend hook, for similar reasons.. */ sc->sc_powerhook = powerhook_establish(fxp_power, sc); if (sc->sc_powerhook == NULL) printf("%s: WARNING: unable to establish power hook\n", sc->sc_dev.dv_xname); return; /* * Free any resources we've allocated during the failed attach * attempt. Do this in reverse order and fall though. */ fail_5: for (i = 0; i < FXP_NRFABUFS; i++) { if (sc->sc_rxmaps[i] != NULL) bus_dmamap_destroy(sc->sc_dmat, sc->sc_rxmaps[i]); } fail_4: for (i = 0; i < FXP_NTXCB; i++) { if (FXP_DSTX(sc, i)->txs_dmamap != NULL) bus_dmamap_destroy(sc->sc_dmat, FXP_DSTX(sc, i)->txs_dmamap); } bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap); fail_3: bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap); fail_2: bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_control_data, sizeof(struct fxp_control_data)); fail_1: bus_dmamem_free(sc->sc_dmat, &seg, rseg); fail_0: return; } void fxp_mii_initmedia(sc) struct fxp_softc *sc; { sc->sc_flags |= FXPF_MII; sc->sc_mii.mii_ifp = &sc->sc_ethercom.ec_if; sc->sc_mii.mii_readreg = fxp_mdi_read; sc->sc_mii.mii_writereg = fxp_mdi_write; sc->sc_mii.mii_statchg = fxp_statchg; ifmedia_init(&sc->sc_mii.mii_media, 0, fxp_mii_mediachange, fxp_mii_mediastatus); /* * The i82557 wedges if all of its PHYs are isolated! */ mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, MIIF_NOISOLATE); if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL); ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE); } else ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO); } void fxp_80c24_initmedia(sc) struct fxp_softc *sc; { /* * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter * doesn't have a programming interface of any sort. The * media is sensed automatically based on how the link partner * is configured. This is, in essence, manual configuration. */ printf("%s: Seeq 80c24 AutoDUPLEX media interface present\n", sc->sc_dev.dv_xname); ifmedia_init(&sc->sc_mii.mii_media, 0, fxp_80c24_mediachange, fxp_80c24_mediastatus); ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_MANUAL, 0, NULL); ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_MANUAL); } /* * Device shutdown routine. Called at system shutdown after sync. The * main purpose of this routine is to shut off receiver DMA so that * kernel memory doesn't get clobbered during warmboot. */ void fxp_shutdown(arg) void *arg; { struct fxp_softc *sc = arg; /* * Since the system's going to halt shortly, don't bother * freeing mbufs. */ fxp_stop(sc, 0); } /* * Power handler routine. Called when the system is transitioning * into/out of power save modes. As with fxp_shutdown, the main * purpose of this routine is to shut off receiver DMA so it doesn't * clobber kernel memory at the wrong time. */ void fxp_power(why, arg) int why; void *arg; { struct fxp_softc *sc = arg; struct ifnet *ifp; int s; s = splnet(); if (why != PWR_RESUME) fxp_stop(sc, 0); else { ifp = &sc->sc_ethercom.ec_if; if (ifp->if_flags & IFF_UP) fxp_init(sc); } splx(s); } /* * Initialize the interface media. */ void fxp_get_info(sc, enaddr) struct fxp_softc *sc; u_int8_t *enaddr; { u_int16_t data, myea[3]; /* * Reset to a stable state. */ CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SELECTIVE_RESET); DELAY(10); sc->sc_eeprom_size = 0; fxp_autosize_eeprom(sc); if(sc->sc_eeprom_size == 0) { printf("%s: failed to detect EEPROM size", sc->sc_dev.dv_xname); sc->sc_eeprom_size = 6; /* XXX panic here? */ } #ifdef DEBUG printf("%s: detected %d word EEPROM\n", sc->sc_dev.dv_xname, 1 << sc->sc_eeprom_size); #endif /* * Get info about the primary PHY */ fxp_read_eeprom(sc, &data, 6, 1); sc->phy_primary_addr = data & 0xff; sc->phy_primary_device = (data >> 8) & 0x3f; sc->phy_10Mbps_only = data >> 15; /* * Read MAC address. */ fxp_read_eeprom(sc, myea, 0, 3); bcopy(myea, enaddr, ETHER_ADDR_LEN); } /* * Figure out EEPROM size. * * 559's can have either 64-word or 256-word EEPROMs, the 558 * datasheet only talks about 64-word EEPROMs, and the 557 datasheet * talks about the existance of 16 to 256 word EEPROMs. * * The only known sizes are 64 and 256, where the 256 version is used * by CardBus cards to store CIS information. * * The address is shifted in msb-to-lsb, and after the last * address-bit the EEPROM is supposed to output a `dummy zero' bit, * after which follows the actual data. We try to detect this zero, by * probing the data-out bit in the EEPROM control register just after * having shifted in a bit. If the bit is zero, we assume we've * shifted enough address bits. The data-out should be tri-state, * before this, which should translate to a logical one. * * Other ways to do this would be to try to read a register with known * contents with a varying number of address bits, but no such * register seem to be available. The high bits of register 10 are 01 * on the 558 and 559, but apparently not on the 557. * * The Linux driver computes a checksum on the EEPROM data, but the * value of this checksum is not very well documented. */ void fxp_autosize_eeprom(sc) struct fxp_softc *sc; { u_int16_t reg; int x; CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); /* * Shift in read opcode. */ for (x = 3; x > 0; x--) { if (FXP_EEPROM_OPC_READ & (1 << (x - 1))) { reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI; } else { reg = FXP_EEPROM_EECS; } CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK); DELAY(1); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); } /* * Shift in address, wait for the dummy zero following a correct * address shift. */ for (x = 1; x <= 8; x++) { CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS | FXP_EEPROM_EESK); DELAY(1); if((CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO) == 0) break; CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); DELAY(1); } CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0); DELAY(1); if(x != 6 && x != 8) { #ifdef DEBUG printf("%s: strange EEPROM size (%d)\n", sc->sc_dev.dv_xname, 1 << x); #endif } else sc->sc_eeprom_size = x; } /* * Read from the serial EEPROM. Basically, you manually shift in * the read opcode (one bit at a time) and then shift in the address, * and then you shift out the data (all of this one bit at a time). * The word size is 16 bits, so you have to provide the address for * every 16 bits of data. */ void fxp_read_eeprom(sc, data, offset, words) struct fxp_softc *sc; u_int16_t *data; int offset; int words; { u_int16_t reg; int i, x; for (i = 0; i < words; i++) { CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); /* * Shift in read opcode. */ for (x = 3; x > 0; x--) { if (FXP_EEPROM_OPC_READ & (1 << (x - 1))) { reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI; } else { reg = FXP_EEPROM_EECS; } CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK); DELAY(1); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); } /* * Shift in address. */ for (x = sc->sc_eeprom_size; x > 0; x--) { if ((i + offset) & (1 << (x - 1))) { reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI; } else { reg = FXP_EEPROM_EECS; } CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK); DELAY(1); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); } reg = FXP_EEPROM_EECS; data[i] = 0; /* * Shift out data. */ for (x = 16; x > 0; x--) { CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK); DELAY(1); if (CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO) data[i] |= (1 << (x - 1)); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); } CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0); DELAY(1); } } /* * Start packet transmission on the interface. */ void fxp_start(ifp) struct ifnet *ifp; { struct fxp_softc *sc = ifp->if_softc; struct mbuf *m0, *m; struct fxp_cb_tx *txd; struct fxp_txsoft *txs; struct fxp_tbdlist *tbd; bus_dmamap_t dmamap; int error, lasttx, nexttx, opending, seg; /* * If we want a re-init, bail out now. */ if (sc->sc_flags & FXPF_WANTINIT) { ifp->if_flags |= IFF_OACTIVE; return; } if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) return; /* * Remember the previous txpending and the current lasttx. */ opending = sc->sc_txpending; lasttx = sc->sc_txlast; /* * Loop through the send queue, setting up transmit descriptors * until we drain the queue, or use up all available transmit * descriptors. */ while (sc->sc_txpending < FXP_NTXCB) { /* * Grab a packet off the queue. */ IF_DEQUEUE(&ifp->if_snd, m0); if (m0 == NULL) break; /* * Get the next available transmit descriptor. */ nexttx = FXP_NEXTTX(sc->sc_txlast); txd = FXP_CDTX(sc, nexttx); tbd = FXP_CDTBD(sc, nexttx); txs = FXP_DSTX(sc, nexttx); dmamap = txs->txs_dmamap; /* * Load the DMA map. If this fails, the packet either * didn't fit in the allotted number of frags, or we were * short on resources. In this case, we'll copy and try * again. */ if (bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, BUS_DMA_NOWAIT) != 0) { MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) { printf("%s: unable to allocate Tx mbuf\n", sc->sc_dev.dv_xname); IF_PREPEND(&ifp->if_snd, m0); break; } if (m0->m_pkthdr.len > MHLEN) { MCLGET(m, M_DONTWAIT); if ((m->m_flags & M_EXT) == 0) { printf("%s: unable to allocate Tx " "cluster\n", sc->sc_dev.dv_xname); m_freem(m); IF_PREPEND(&ifp->if_snd, m0); break; } } m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, caddr_t)); m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len; m_freem(m0); m0 = m; error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to load Tx buffer, " "error = %d\n", sc->sc_dev.dv_xname, error); IF_PREPEND(&ifp->if_snd, m0); break; } } /* Initialize the fraglist. */ for (seg = 0; seg < dmamap->dm_nsegs; seg++) { tbd->tbd_d[seg].tb_addr = htole32(dmamap->dm_segs[seg].ds_addr); tbd->tbd_d[seg].tb_size = htole32(dmamap->dm_segs[seg].ds_len); } FXP_CDTBDSYNC(sc, nexttx, BUS_DMASYNC_PREWRITE); /* Sync the DMA map. */ bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); /* * Store a pointer to the packet so we can free it later. */ txs->txs_mbuf = m0; /* * Initialize the transmit descriptor. */ /* BIG_ENDIAN: no need to swap to store 0 */ txd->cb_status = 0; txd->cb_command = htole16(FXP_CB_COMMAND_XMIT | FXP_CB_COMMAND_SF); txd->tx_threshold = tx_threshold; txd->tbd_number = dmamap->dm_nsegs; FXP_CDTXSYNC(sc, nexttx, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); /* Advance the tx pointer. */ sc->sc_txpending++; sc->sc_txlast = nexttx; #if NBPFILTER > 0 /* * Pass packet to bpf if there is a listener. */ if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m0); #endif } if (sc->sc_txpending == FXP_NTXCB) { /* No more slots; notify upper layer. */ ifp->if_flags |= IFF_OACTIVE; } if (sc->sc_txpending != opending) { /* * We enqueued packets. If the transmitter was idle, * reset the txdirty pointer. */ if (opending == 0) sc->sc_txdirty = FXP_NEXTTX(lasttx); /* * Cause the chip to interrupt and suspend command * processing once the last packet we've enqueued * has been transmitted. */ FXP_CDTX(sc, sc->sc_txlast)->cb_command |= htole16(FXP_CB_COMMAND_I | FXP_CB_COMMAND_S); FXP_CDTXSYNC(sc, sc->sc_txlast, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); /* * The entire packet chain is set up. Clear the suspend bit * on the command prior to the first packet we set up. */ FXP_CDTXSYNC(sc, lasttx, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); FXP_CDTX(sc, lasttx)->cb_command &= htole16(~FXP_CB_COMMAND_S); FXP_CDTXSYNC(sc, lasttx, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); /* * Issue a Resume command in case the chip was suspended. */ fxp_scb_wait(sc); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_RESUME); /* Set a watchdog timer in case the chip flakes out. */ ifp->if_timer = 5; } } /* * Process interface interrupts. */ int fxp_intr(arg) void *arg; { struct fxp_softc *sc = arg; struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct fxp_cb_tx *txd; struct fxp_txsoft *txs; struct mbuf *m, *m0; bus_dmamap_t rxmap; struct fxp_rfa *rfa; struct ether_header *eh; int i, claimed = 0; u_int16_t len, rxstat, txstat; u_int8_t statack; if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) return (0); /* * If the interface isn't running, don't try to * service the interrupt.. just ack it and bail. */ if ((ifp->if_flags & IFF_RUNNING) == 0) { statack = CSR_READ_1(sc, FXP_CSR_SCB_STATACK); if (statack) { claimed = 1; CSR_WRITE_1(sc, FXP_CSR_SCB_STATACK, statack); } return (claimed); } while ((statack = CSR_READ_1(sc, FXP_CSR_SCB_STATACK)) != 0) { claimed = 1; /* * First ACK all the interrupts in this pass. */ CSR_WRITE_1(sc, FXP_CSR_SCB_STATACK, statack); /* * Process receiver interrupts. If a no-resource (RNR) * condition exists, get whatever packets we can and * re-start the receiver. */ if (statack & (FXP_SCB_STATACK_FR | FXP_SCB_STATACK_RNR)) { rcvloop: m = sc->sc_rxq.ifq_head; rfa = FXP_MTORFA(m); rxmap = M_GETCTX(m, bus_dmamap_t); FXP_RFASYNC(sc, m, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); rxstat = le16toh(rfa->rfa_status); if ((rxstat & FXP_RFA_STATUS_C) == 0) { /* * We have processed all of the * receive buffers. */ goto do_transmit; } IF_DEQUEUE(&sc->sc_rxq, m); FXP_RXBUFSYNC(sc, m, BUS_DMASYNC_POSTREAD); len = le16toh(rfa->actual_size) & (m->m_ext.ext_size - 1); if (len < sizeof(struct ether_header)) { /* * Runt packet; drop it now. */ FXP_INIT_RFABUF(sc, m); goto rcvloop; } /* * If the packet is small enough to fit in a * single header mbuf, allocate one and copy * the data into it. This greatly reduces * memory consumption when we receive lots * of small packets. * * Otherwise, we add a new buffer to the receive * chain. If this fails, we drop the packet and * recycle the old buffer. */ if (fxp_copy_small != 0 && len <= MHLEN) { MGETHDR(m0, M_DONTWAIT, MT_DATA); if (m == NULL) goto dropit; memcpy(mtod(m0, caddr_t), mtod(m, caddr_t), len); FXP_INIT_RFABUF(sc, m); m = m0; } else { if (fxp_add_rfabuf(sc, rxmap, 1) != 0) { dropit: ifp->if_ierrors++; FXP_INIT_RFABUF(sc, m); goto rcvloop; } } m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = m->m_len = len; eh = mtod(m, struct ether_header *); #if NBPFILTER > 0 /* * Pass this up to any BPF listeners, but only * pass it up the stack it its for us. */ if (ifp->if_bpf) { bpf_mtap(ifp->if_bpf, m); if ((ifp->if_flags & IFF_PROMISC) != 0 && (rxstat & FXP_RFA_STATUS_IAMATCH) != 0 && (eh->ether_dhost[0] & 1) == 0) { m_freem(m); goto rcvloop; } } #endif /* NBPFILTER > 0 */ /* Pass it on. */ (*ifp->if_input)(ifp, m); goto rcvloop; } do_transmit: if (statack & FXP_SCB_STATACK_RNR) { rxmap = M_GETCTX(sc->sc_rxq.ifq_head, bus_dmamap_t); fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, rxmap->dm_segs[0].ds_addr + RFA_ALIGNMENT_FUDGE); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_RU_START); } /* * Free any finished transmit mbuf chains. */ if (statack & (FXP_SCB_STATACK_CXTNO|FXP_SCB_STATACK_CNA)) { ifp->if_flags &= ~IFF_OACTIVE; for (i = sc->sc_txdirty; sc->sc_txpending != 0; i = FXP_NEXTTX(i), sc->sc_txpending--) { txd = FXP_CDTX(sc, i); txs = FXP_DSTX(sc, i); FXP_CDTXSYNC(sc, i, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); txstat = le16toh(txd->cb_status); if ((txstat & FXP_CB_STATUS_C) == 0) break; FXP_CDTBDSYNC(sc, i, BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(sc->sc_dmat, txs->txs_dmamap, 0, txs->txs_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); m_freem(txs->txs_mbuf); txs->txs_mbuf = NULL; } /* Update the dirty transmit buffer pointer. */ sc->sc_txdirty = i; /* * Cancel the watchdog timer if there are no pending * transmissions. */ if (sc->sc_txpending == 0) { ifp->if_timer = 0; /* * If we want a re-init, do that now. */ if (sc->sc_flags & FXPF_WANTINIT) (void) fxp_init(sc); } /* * Try to get more packets going. */ fxp_start(ifp); } } #if NRND > 0 if (claimed) rnd_add_uint32(&sc->rnd_source, statack); #endif return (claimed); } /* * Update packet in/out/collision statistics. The i82557 doesn't * allow you to access these counters without doing a fairly * expensive DMA to get _all_ of the statistics it maintains, so * we do this operation here only once per second. The statistics * counters in the kernel are updated from the previous dump-stats * DMA and then a new dump-stats DMA is started. The on-chip * counters are zeroed when the DMA completes. If we can't start * the DMA immediately, we don't wait - we just prepare to read * them again next time. */ void fxp_tick(arg) void *arg; { struct fxp_softc *sc = arg; struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct fxp_stats *sp = &sc->sc_control_data->fcd_stats; int s; if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) return; s = splnet(); ifp->if_opackets += le32toh(sp->tx_good); ifp->if_collisions += le32toh(sp->tx_total_collisions); if (sp->rx_good) { ifp->if_ipackets += le32toh(sp->rx_good); sc->sc_rxidle = 0; } else { sc->sc_rxidle++; } ifp->if_ierrors += le32toh(sp->rx_crc_errors) + le32toh(sp->rx_alignment_errors) + le32toh(sp->rx_rnr_errors) + le32toh(sp->rx_overrun_errors); /* * If any transmit underruns occured, bump up the transmit * threshold by another 512 bytes (64 * 8). */ if (sp->tx_underruns) { ifp->if_oerrors += le32toh(sp->tx_underruns); if (tx_threshold < 192) tx_threshold += 64; } /* * If we haven't received any packets in FXP_MAC_RX_IDLE seconds, * then assume the receiver has locked up and attempt to clear * the condition by reprogramming the multicast filter (actually, * resetting the interface). This is a work-around for a bug in * the 82557 where the receiver locks up if it gets certain types * of garbage in the syncronization bits prior to the packet header. * This bug is supposed to only occur in 10Mbps mode, but has been * seen to occur in 100Mbps mode as well (perhaps due to a 10/100 * speed transition). */ if (sc->sc_rxidle > FXP_MAX_RX_IDLE) { (void) fxp_init(sc); splx(s); return; } /* * If there is no pending command, start another stats * dump. Otherwise punt for now. */ if (CSR_READ_1(sc, FXP_CSR_SCB_COMMAND) == 0) { /* * Start another stats dump. */ CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_DUMPRESET); } else { /* * A previous command is still waiting to be accepted. * Just zero our copy of the stats and wait for the * next timer event to update them. */ /* BIG_ENDIAN: no swap required to store 0 */ sp->tx_good = 0; sp->tx_underruns = 0; sp->tx_total_collisions = 0; sp->rx_good = 0; sp->rx_crc_errors = 0; sp->rx_alignment_errors = 0; sp->rx_rnr_errors = 0; sp->rx_overrun_errors = 0; } if (sc->sc_flags & FXPF_MII) { /* Tick the MII clock. */ mii_tick(&sc->sc_mii); } splx(s); /* * Schedule another timeout one second from now. */ callout_reset(&sc->sc_callout, hz, fxp_tick, sc); } /* * Drain the receive queue. */ void fxp_rxdrain(sc) struct fxp_softc *sc; { bus_dmamap_t rxmap; struct mbuf *m; for (;;) { IF_DEQUEUE(&sc->sc_rxq, m); if (m == NULL) break; rxmap = M_GETCTX(m, bus_dmamap_t); bus_dmamap_unload(sc->sc_dmat, rxmap); FXP_RXMAP_PUT(sc, rxmap); m_freem(m); } } /* * Stop the interface. Cancels the statistics updater and resets * the interface. */ void fxp_stop(sc, drain) struct fxp_softc *sc; int drain; { struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct fxp_txsoft *txs; int i; /* * Turn down interface (done early to avoid bad interactions * between panics, shutdown hooks, and the watchdog timer) */ ifp->if_timer = 0; ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); /* * Cancel stats updater. */ callout_stop(&sc->sc_callout); if (sc->sc_flags & FXPF_MII) { /* Down the MII. */ mii_down(&sc->sc_mii); } /* * Issue software reset */ CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SELECTIVE_RESET); DELAY(10); /* * Release any xmit buffers. */ for (i = 0; i < FXP_NTXCB; i++) { txs = FXP_DSTX(sc, i); if (txs->txs_mbuf != NULL) { bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); m_freem(txs->txs_mbuf); txs->txs_mbuf = NULL; } } sc->sc_txpending = 0; if (drain) { /* * Release the receive buffers. */ fxp_rxdrain(sc); } } /* * Watchdog/transmission transmit timeout handler. Called when a * transmission is started on the interface, but no interrupt is * received before the timeout. This usually indicates that the * card has wedged for some reason. */ void fxp_watchdog(ifp) struct ifnet *ifp; { struct fxp_softc *sc = ifp->if_softc; printf("%s: device timeout\n", sc->sc_dev.dv_xname); ifp->if_oerrors++; (void) fxp_init(sc); } /* * Initialize the interface. Must be called at splnet(). */ int fxp_init(sc) struct fxp_softc *sc; { struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct fxp_cb_config *cbp; struct fxp_cb_ias *cb_ias; struct fxp_cb_tx *txd; bus_dmamap_t rxmap; int i, prm, allm, error = 0; /* * Cancel any pending I/O */ fxp_stop(sc, 0); /* * XXX just setting sc_flags to 0 here clears any FXPF_MII * flag, and this prevents the MII from detaching resulting in * a panic. The flags field should perhaps be split in runtime * flags and more static information. For now, just clear the * only other flag set. */ sc->sc_flags &= ~FXPF_WANTINIT; /* * Initialize base of CBL and RFA memory. Loading with zero * sets it up for regular linear addressing. */ fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, 0); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_BASE); fxp_scb_wait(sc); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_RU_BASE); /* * Initialize the multicast filter. Do this now, since we might * have to setup the config block differently. */ fxp_mc_setup(sc); prm = (ifp->if_flags & IFF_PROMISC) ? 1 : 0; allm = (ifp->if_flags & IFF_ALLMULTI) ? 1 : 0; /* * Initialize base of dump-stats buffer. */ fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->sc_cddma + FXP_CDSTATSOFF); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_DUMP_ADR); cbp = &sc->sc_control_data->fcd_configcb; memset(cbp, 0, sizeof(struct fxp_cb_config)); /* * This copy is kind of disgusting, but there are a bunch of must be * zero and must be one bits in this structure and this is the easiest * way to initialize them all to proper values. */ memcpy(cbp, fxp_cb_config_template, sizeof(fxp_cb_config_template)); /* BIG_ENDIAN: no need to swap to store 0 */ cbp->cb_status = 0; cbp->cb_command = htole16(FXP_CB_COMMAND_CONFIG | FXP_CB_COMMAND_EL); /* BIG_ENDIAN: no need to swap to store 0xffffffff */ cbp->link_addr = 0xffffffff; /* (no) next command */ cbp->byte_count = 22; /* (22) bytes to config */ cbp->rx_fifo_limit = 8; /* rx fifo threshold (32 bytes) */ cbp->tx_fifo_limit = 0; /* tx fifo threshold (0 bytes) */ cbp->adaptive_ifs = 0; /* (no) adaptive interframe spacing */ cbp->rx_dma_bytecount = 0; /* (no) rx DMA max */ cbp->tx_dma_bytecount = 0; /* (no) tx DMA max */ cbp->dma_bce = 0; /* (disable) dma max counters */ cbp->late_scb = 0; /* (don't) defer SCB update */ cbp->tno_int = 0; /* (disable) tx not okay interrupt */ cbp->ci_int = 1; /* interrupt on CU idle */ cbp->save_bf = prm; /* save bad frames */ cbp->disc_short_rx = !prm; /* discard short packets */ cbp->underrun_retry = 1; /* retry mode (1) on DMA underrun */ cbp->mediatype = !sc->phy_10Mbps_only; /* interface mode */ cbp->nsai = 1; /* (don't) disable source addr insert */ cbp->preamble_length = 2; /* (7 byte) preamble */ cbp->loopback = 0; /* (don't) loopback */ cbp->linear_priority = 0; /* (normal CSMA/CD operation) */ cbp->linear_pri_mode = 0; /* (wait after xmit only) */ cbp->interfrm_spacing = 6; /* (96 bits of) interframe spacing */ cbp->promiscuous = prm; /* promiscuous mode */ cbp->bcast_disable = 0; /* (don't) disable broadcasts */ cbp->crscdt = 0; /* (CRS only) */ cbp->stripping = !prm; /* truncate rx packet to byte count */ cbp->padding = 1; /* (do) pad short tx packets */ cbp->rcv_crc_xfer = 0; /* (don't) xfer CRC to host */ cbp->force_fdx = 0; /* (don't) force full duplex */ cbp->fdx_pin_en = 1; /* (enable) FDX# pin */ cbp->multi_ia = 0; /* (don't) accept multiple IAs */ cbp->mc_all = allm; /* accept all multicasts */ FXP_CDCONFIGSYNC(sc, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); /* * Start the config command/DMA. */ fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->sc_cddma + FXP_CDCONFIGOFF); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_START); /* ...and wait for it to complete. */ i = 1000; do { FXP_CDCONFIGSYNC(sc, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); DELAY(1); } while ((cbp->cb_status & FXP_CB_STATUS_C) == 0 && --i); if (i == 0) { printf("%s at line %d: dmasync timeout\n", sc->sc_dev.dv_xname, __LINE__); return ETIMEDOUT; } /* * Initialize the station address. */ cb_ias = &sc->sc_control_data->fcd_iascb; /* BIG_ENDIAN: no need to swap to store 0 */ cb_ias->cb_status = 0; cb_ias->cb_command = htole16(FXP_CB_COMMAND_IAS | FXP_CB_COMMAND_EL); /* BIG_ENDIAN: no need to swap to store 0xffffffff */ cb_ias->link_addr = 0xffffffff; memcpy((void *)cb_ias->macaddr, LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); FXP_CDIASSYNC(sc, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); /* * Start the IAS (Individual Address Setup) command/DMA. */ fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->sc_cddma + FXP_CDIASOFF); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_START); /* ...and wait for it to complete. */ i = 1000; do { FXP_CDIASSYNC(sc, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); DELAY(1); } while ((cb_ias->cb_status & FXP_CB_STATUS_C) == 0 && --i); if (i == 0) { printf("%s at line %d: dmasync timeout\n", sc->sc_dev.dv_xname, __LINE__); return ETIMEDOUT; } /* * Initialize the transmit descriptor ring. txlast is initialized * to the end of the list so that it will wrap around to the first * descriptor when the first packet is transmitted. */ for (i = 0; i < FXP_NTXCB; i++) { txd = FXP_CDTX(sc, i); memset(txd, 0, sizeof(struct fxp_cb_tx)); txd->cb_command = htole16(FXP_CB_COMMAND_NOP | FXP_CB_COMMAND_S); txd->tbd_array_addr = htole32(FXP_CDTBDADDR(sc, i)); txd->link_addr = htole32(FXP_CDTXADDR(sc, FXP_NEXTTX(i))); FXP_CDTXSYNC(sc, i, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); } sc->sc_txpending = 0; sc->sc_txdirty = 0; sc->sc_txlast = FXP_NTXCB - 1; /* * Initialize the receive buffer list. */ sc->sc_rxq.ifq_maxlen = FXP_NRFABUFS; while (sc->sc_rxq.ifq_len < FXP_NRFABUFS) { rxmap = FXP_RXMAP_GET(sc); if ((error = fxp_add_rfabuf(sc, rxmap, 0)) != 0) { printf("%s: unable to allocate or map rx " "buffer %d, error = %d\n", sc->sc_dev.dv_xname, sc->sc_rxq.ifq_len, error); /* * XXX Should attempt to run with fewer receive * XXX buffers instead of just failing. */ FXP_RXMAP_PUT(sc, rxmap); fxp_rxdrain(sc); goto out; } } sc->sc_rxidle = 0; /* * Give the transmit ring to the chip. We do this by pointing * the chip at the last descriptor (which is a NOP|SUSPEND), and * issuing a start command. It will execute the NOP and then * suspend, pointing at the first descriptor. */ fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, FXP_CDTXADDR(sc, sc->sc_txlast)); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_START); /* * Initialize receiver buffer area - RFA. */ rxmap = M_GETCTX(sc->sc_rxq.ifq_head, bus_dmamap_t); fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, rxmap->dm_segs[0].ds_addr + RFA_ALIGNMENT_FUDGE); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_RU_START); if (sc->sc_flags & FXPF_MII) { /* * Set current media. */ mii_mediachg(&sc->sc_mii); } /* * ...all done! */ ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; /* * Start the one second timer. */ callout_reset(&sc->sc_callout, hz, fxp_tick, sc); /* * Attempt to start output on the interface. */ fxp_start(ifp); out: if (error) printf("%s: interface not running\n", sc->sc_dev.dv_xname); return (error); } /* * Change media according to request. */ int fxp_mii_mediachange(ifp) struct ifnet *ifp; { struct fxp_softc *sc = ifp->if_softc; if (ifp->if_flags & IFF_UP) mii_mediachg(&sc->sc_mii); return (0); } /* * Notify the world which media we're using. */ void fxp_mii_mediastatus(ifp, ifmr) struct ifnet *ifp; struct ifmediareq *ifmr; { struct fxp_softc *sc = ifp->if_softc; if(sc->sc_enabled == 0) { ifmr->ifm_active = IFM_ETHER | IFM_NONE; ifmr->ifm_status = 0; return; } mii_pollstat(&sc->sc_mii); ifmr->ifm_status = sc->sc_mii.mii_media_status; ifmr->ifm_active = sc->sc_mii.mii_media_active; } int fxp_80c24_mediachange(ifp) struct ifnet *ifp; { /* Nothing to do here. */ return (0); } void fxp_80c24_mediastatus(ifp, ifmr) struct ifnet *ifp; struct ifmediareq *ifmr; { struct fxp_softc *sc = ifp->if_softc; /* * Media is currently-selected media. We cannot determine * the link status. */ ifmr->ifm_status = 0; ifmr->ifm_active = sc->sc_mii.mii_media.ifm_cur->ifm_media; } /* * Add a buffer to the end of the RFA buffer list. * Return 0 if successful, error code on failure. * * The RFA struct is stuck at the beginning of mbuf cluster and the * data pointer is fixed up to point just past it. */ int fxp_add_rfabuf(sc, rxmap, unload) struct fxp_softc *sc; bus_dmamap_t rxmap; int unload; { struct mbuf *m; 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 (unload) bus_dmamap_unload(sc->sc_dmat, rxmap); M_SETCTX(m, rxmap); error = bus_dmamap_load(sc->sc_dmat, rxmap, m->m_ext.ext_buf, m->m_ext.ext_size, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: can't load rx DMA map %d, error = %d\n", sc->sc_dev.dv_xname, sc->sc_rxq.ifq_len, error); panic("fxp_add_rfabuf"); /* XXX */ } FXP_INIT_RFABUF(sc, m); return (0); } volatile int fxp_mdi_read(self, phy, reg) struct device *self; int phy; int reg; { struct fxp_softc *sc = (struct fxp_softc *)self; int count = 10000; int value; CSR_WRITE_4(sc, FXP_CSR_MDICONTROL, (FXP_MDI_READ << 26) | (reg << 16) | (phy << 21)); while (((value = CSR_READ_4(sc, FXP_CSR_MDICONTROL)) & 0x10000000) == 0 && count--) DELAY(10); if (count <= 0) printf("%s: fxp_mdi_read: timed out\n", sc->sc_dev.dv_xname); return (value & 0xffff); } void fxp_statchg(self) struct device *self; { /* Nothing to do. */ } void fxp_mdi_write(self, phy, reg, value) struct device *self; int phy; int reg; int value; { struct fxp_softc *sc = (struct fxp_softc *)self; int count = 10000; CSR_WRITE_4(sc, FXP_CSR_MDICONTROL, (FXP_MDI_WRITE << 26) | (reg << 16) | (phy << 21) | (value & 0xffff)); while((CSR_READ_4(sc, FXP_CSR_MDICONTROL) & 0x10000000) == 0 && count--) DELAY(10); if (count <= 0) printf("%s: fxp_mdi_write: timed out\n", sc->sc_dev.dv_xname); } int fxp_ioctl(ifp, command, data) struct ifnet *ifp; u_long command; caddr_t data; { struct fxp_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; struct ifaddr *ifa = (struct ifaddr *)data; int s, error = 0; s = splnet(); switch (command) { case SIOCSIFADDR: if ((error = fxp_enable(sc)) != 0) break; ifp->if_flags |= IFF_UP; switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: if ((error = fxp_init(sc)) != 0) break; arp_ifinit(ifp, ifa); break; #endif /* INET */ #ifdef NS case AF_NS: { struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; if (ns_nullhost(*ina)) ina->x_host = *(union ns_host *) LLADDR(ifp->if_sadl); else bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl), ifp->if_addrlen); /* Set new address. */ error = fxp_init(sc); break; } #endif /* NS */ default: error = fxp_init(sc); break; } break; case SIOCSIFMTU: if (ifr->ifr_mtu > ETHERMTU) error = EINVAL; else ifp->if_mtu = ifr->ifr_mtu; break; case SIOCSIFFLAGS: if ((ifp->if_flags & IFF_UP) == 0 && (ifp->if_flags & IFF_RUNNING) != 0) { /* * If interface is marked down and it is running, then * stop it. */ fxp_stop(sc, 1); fxp_disable(sc); } else if ((ifp->if_flags & IFF_UP) != 0 && (ifp->if_flags & IFF_RUNNING) == 0) { /* * If interface is marked up and it is stopped, then * start it. */ if((error = fxp_enable(sc)) != 0) break; error = fxp_init(sc); } else if ((ifp->if_flags & IFF_UP) != 0) { /* * Reset the interface to pick up change in any other * flags that affect the hardware state. */ if((error = fxp_enable(sc)) != 0) break; error = fxp_init(sc); } break; case SIOCADDMULTI: case SIOCDELMULTI: if(sc->sc_enabled == 0) { error = EIO; break; } error = (command == SIOCADDMULTI) ? ether_addmulti(ifr, &sc->sc_ethercom) : ether_delmulti(ifr, &sc->sc_ethercom); if (error == ENETRESET) { /* * Multicast list has changed; set the hardware * filter accordingly. */ if (sc->sc_txpending) { sc->sc_flags |= FXPF_WANTINIT; error = 0; } else error = fxp_init(sc); } break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, command); break; default: error = EINVAL; break; } splx(s); return (error); } /* * Program the multicast filter. * * This function must be called at splnet(). */ void fxp_mc_setup(sc) struct fxp_softc *sc; { struct fxp_cb_mcs *mcsp = &sc->sc_control_data->fcd_mcscb; struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct ethercom *ec = &sc->sc_ethercom; struct ether_multi *enm; struct ether_multistep step; int count, nmcasts; #ifdef DIAGNOSTIC if (sc->sc_txpending) panic("fxp_mc_setup: pending transmissions"); #endif ifp->if_flags &= ~IFF_ALLMULTI; /* * Initialize multicast setup descriptor. */ nmcasts = 0; ETHER_FIRST_MULTI(step, ec, enm); while (enm != NULL) { /* * Check for too many multicast addresses or if we're * listening to a range. Either way, we simply have * to accept all multicasts. */ if (nmcasts >= MAXMCADDR || memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN) != 0) { /* * Callers of this function must do the * right thing with this. If we're called * from outside fxp_init(), the caller must * detect if the state if IFF_ALLMULTI changes. * If it does, the caller must then call * fxp_init(), since allmulti is handled by * the config block. */ ifp->if_flags |= IFF_ALLMULTI; return; } memcpy((void *)&mcsp->mc_addr[nmcasts][0], enm->enm_addrlo, ETHER_ADDR_LEN); nmcasts++; ETHER_NEXT_MULTI(step, enm); } /* BIG_ENDIAN: no need to swap to store 0 */ mcsp->cb_status = 0; mcsp->cb_command = htole16(FXP_CB_COMMAND_MCAS | FXP_CB_COMMAND_EL); mcsp->link_addr = htole32(FXP_CDTXADDR(sc, FXP_NEXTTX(sc->sc_txlast))); mcsp->mc_cnt = htole16(nmcasts * ETHER_ADDR_LEN); FXP_CDMCSSYNC(sc, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); /* * Wait until the command unit is not active. This should never * happen since nothing is queued, but make sure anyway. */ count = 100; while ((CSR_READ_1(sc, FXP_CSR_SCB_RUSCUS) >> 6) == FXP_SCB_CUS_ACTIVE && --count) DELAY(1); if (count == 0) { printf("%s at line %d: command queue timeout\n", sc->sc_dev.dv_xname, __LINE__); return; } /* * Start the multicast setup command/DMA. */ fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->sc_cddma + FXP_CDMCSOFF); CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_SCB_COMMAND_CU_START); /* ...and wait for it to complete. */ count = 1000; do { FXP_CDMCSSYNC(sc, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); DELAY(1); } while ((mcsp->cb_status & FXP_CB_STATUS_C) == 0 && --count); if (count == 0) { printf("%s at line %d: dmasync timeout\n", sc->sc_dev.dv_xname, __LINE__); return; } } int fxp_enable(sc) struct fxp_softc *sc; { if (sc->sc_enabled == 0 && sc->sc_enable != NULL) { if ((*sc->sc_enable)(sc) != 0) { printf("%s: device enable failed\n", sc->sc_dev.dv_xname); return (EIO); } } sc->sc_enabled = 1; return (0); } void fxp_disable(sc) struct fxp_softc *sc; { if (sc->sc_enabled != 0 && sc->sc_disable != NULL) { (*sc->sc_disable)(sc); sc->sc_enabled = 0; } } /* * fxp_activate: * * Handle device activation/deactivation requests. */ int fxp_activate(self, act) struct device *self; enum devact act; { struct fxp_softc *sc = (void *) self; int s, error = 0; s = splnet(); switch (act) { case DVACT_ACTIVATE: error = EOPNOTSUPP; break; case DVACT_DEACTIVATE: if (sc->sc_flags & FXPF_MII) mii_activate(&sc->sc_mii, act, MII_PHY_ANY, MII_OFFSET_ANY); if_deactivate(&sc->sc_ethercom.ec_if); break; } splx(s); return (error); } /* * fxp_detach: * * Detach an i82557 interface. */ int fxp_detach(sc) struct fxp_softc *sc; { struct ifnet *ifp = &sc->sc_ethercom.ec_if; int i; /* Unhook our tick handler. */ callout_stop(&sc->sc_callout); if (sc->sc_flags & FXPF_MII) { /* Detach all PHYs */ mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); } /* Delete all remaining media. */ ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); #if NRND > 0 rnd_detach_source(&sc->rnd_source); #endif #if NBPFILTER > 0 bpfdetach(ifp); #endif ether_ifdetach(ifp); if_detach(ifp); for (i = 0; i < FXP_NRFABUFS; i++) { bus_dmamap_unload(sc->sc_dmat, sc->sc_rxmaps[i]); bus_dmamap_destroy(sc->sc_dmat, sc->sc_rxmaps[i]); } for (i = 0; i < FXP_NTXCB; i++) { bus_dmamap_unload(sc->sc_dmat, FXP_DSTX(sc, i)->txs_dmamap); bus_dmamap_destroy(sc->sc_dmat, FXP_DSTX(sc, i)->txs_dmamap); } bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap); bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap); bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_control_data, sizeof(struct fxp_control_data)); bus_dmamem_free(sc->sc_dmat, &sc->sc_cdseg, sc->sc_cdnseg); shutdownhook_disestablish(sc->sc_sdhook); powerhook_disestablish(sc->sc_powerhook); return (0); }