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dp83932.c revision 1.36.6.3
      1  1.36.6.3     skrll /*	$NetBSD: dp83932.c,v 1.36.6.3 2017/02/05 13:40:27 skrll Exp $	*/
      2       1.1   thorpej 
      3       1.1   thorpej /*-
      4       1.1   thorpej  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5       1.1   thorpej  * All rights reserved.
      6       1.1   thorpej  *
      7       1.1   thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8       1.1   thorpej  * by Jason R. Thorpe.
      9       1.1   thorpej  *
     10       1.1   thorpej  * Redistribution and use in source and binary forms, with or without
     11       1.1   thorpej  * modification, are permitted provided that the following conditions
     12       1.1   thorpej  * are met:
     13       1.1   thorpej  * 1. Redistributions of source code must retain the above copyright
     14       1.1   thorpej  *    notice, this list of conditions and the following disclaimer.
     15       1.1   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     16       1.1   thorpej  *    notice, this list of conditions and the following disclaimer in the
     17       1.1   thorpej  *    documentation and/or other materials provided with the distribution.
     18       1.1   thorpej  *
     19       1.1   thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20       1.1   thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21       1.1   thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22       1.1   thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23       1.1   thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24       1.1   thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25       1.1   thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26       1.1   thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27       1.1   thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28       1.1   thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29       1.1   thorpej  * POSSIBILITY OF SUCH DAMAGE.
     30       1.1   thorpej  */
     31       1.1   thorpej 
     32       1.1   thorpej /*
     33       1.1   thorpej  * Device driver for the National Semiconductor DP83932
     34       1.1   thorpej  * Systems-Oriented Network Interface Controller (SONIC).
     35       1.1   thorpej  */
     36       1.5     lukem 
     37       1.5     lukem #include <sys/cdefs.h>
     38  1.36.6.3     skrll __KERNEL_RCSID(0, "$NetBSD: dp83932.c,v 1.36.6.3 2017/02/05 13:40:27 skrll Exp $");
     39       1.1   thorpej 
     40       1.1   thorpej #include <sys/param.h>
     41       1.1   thorpej #include <sys/systm.h>
     42       1.1   thorpej #include <sys/mbuf.h>
     43       1.1   thorpej #include <sys/malloc.h>
     44       1.1   thorpej #include <sys/kernel.h>
     45       1.1   thorpej #include <sys/socket.h>
     46       1.1   thorpej #include <sys/ioctl.h>
     47       1.1   thorpej #include <sys/errno.h>
     48       1.1   thorpej #include <sys/device.h>
     49       1.1   thorpej 
     50       1.1   thorpej #include <net/if.h>
     51       1.1   thorpej #include <net/if_dl.h>
     52       1.1   thorpej #include <net/if_ether.h>
     53       1.1   thorpej 
     54       1.1   thorpej #include <net/bpf.h>
     55       1.1   thorpej 
     56      1.19        ad #include <sys/bus.h>
     57      1.19        ad #include <sys/intr.h>
     58       1.1   thorpej 
     59       1.1   thorpej #include <dev/ic/dp83932reg.h>
     60       1.1   thorpej #include <dev/ic/dp83932var.h>
     61       1.1   thorpej 
     62      1.31   tsutsui static void	sonic_start(struct ifnet *);
     63      1.31   tsutsui static void	sonic_watchdog(struct ifnet *);
     64      1.31   tsutsui static int	sonic_ioctl(struct ifnet *, u_long, void *);
     65      1.31   tsutsui static int	sonic_init(struct ifnet *);
     66      1.31   tsutsui static void	sonic_stop(struct ifnet *, int);
     67      1.31   tsutsui 
     68      1.31   tsutsui static bool	sonic_shutdown(device_t, int);
     69      1.31   tsutsui 
     70      1.31   tsutsui static void	sonic_reset(struct sonic_softc *);
     71      1.31   tsutsui static void	sonic_rxdrain(struct sonic_softc *);
     72      1.31   tsutsui static int	sonic_add_rxbuf(struct sonic_softc *, int);
     73      1.31   tsutsui static void	sonic_set_filter(struct sonic_softc *);
     74       1.1   thorpej 
     75      1.31   tsutsui static uint16_t sonic_txintr(struct sonic_softc *);
     76      1.31   tsutsui static void	sonic_rxintr(struct sonic_softc *);
     77       1.1   thorpej 
     78       1.1   thorpej int	sonic_copy_small = 0;
     79       1.1   thorpej 
     80       1.6    bouyer #define ETHER_PAD_LEN (ETHER_MIN_LEN - ETHER_CRC_LEN)
     81       1.6    bouyer 
     82       1.1   thorpej /*
     83       1.1   thorpej  * sonic_attach:
     84       1.1   thorpej  *
     85       1.1   thorpej  *	Attach a SONIC interface to the system.
     86       1.1   thorpej  */
     87       1.1   thorpej void
     88       1.1   thorpej sonic_attach(struct sonic_softc *sc, const uint8_t *enaddr)
     89       1.1   thorpej {
     90       1.1   thorpej 	struct ifnet *ifp = &sc->sc_ethercom.ec_if;
     91       1.1   thorpej 	int i, rseg, error;
     92       1.1   thorpej 	bus_dma_segment_t seg;
     93       1.1   thorpej 	size_t cdatasize;
     94      1.25   tsutsui 	uint8_t *nullbuf;
     95       1.1   thorpej 
     96       1.1   thorpej 	/*
     97       1.1   thorpej 	 * Allocate the control data structures, and create and load the
     98       1.1   thorpej 	 * DMA map for it.
     99       1.1   thorpej 	 */
    100       1.1   thorpej 	if (sc->sc_32bit)
    101       1.1   thorpej 		cdatasize = sizeof(struct sonic_control_data32);
    102       1.1   thorpej 	else
    103       1.1   thorpej 		cdatasize = sizeof(struct sonic_control_data16);
    104       1.1   thorpej 
    105       1.6    bouyer 	if ((error = bus_dmamem_alloc(sc->sc_dmat, cdatasize + ETHER_PAD_LEN,
    106       1.1   thorpej 	     PAGE_SIZE, (64 * 1024), &seg, 1, &rseg,
    107       1.1   thorpej 	     BUS_DMA_NOWAIT)) != 0) {
    108      1.25   tsutsui 		aprint_error_dev(sc->sc_dev,
    109      1.25   tsutsui 		    "unable to allocate control data, error = %d\n", error);
    110       1.1   thorpej 		goto fail_0;
    111       1.1   thorpej 	}
    112       1.1   thorpej 
    113       1.1   thorpej 	if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg,
    114      1.14  christos 	    cdatasize + ETHER_PAD_LEN, (void **) &sc->sc_cdata16,
    115       1.1   thorpej 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
    116      1.25   tsutsui 		aprint_error_dev(sc->sc_dev,
    117      1.25   tsutsui 		    "unable to map control data, error = %d\n", error);
    118       1.1   thorpej 		goto fail_1;
    119       1.1   thorpej 	}
    120      1.25   tsutsui 	nullbuf = (uint8_t *)sc->sc_cdata16 + cdatasize;
    121       1.6    bouyer 	memset(nullbuf, 0, ETHER_PAD_LEN);
    122       1.1   thorpej 
    123       1.1   thorpej 	if ((error = bus_dmamap_create(sc->sc_dmat,
    124       1.1   thorpej 	     cdatasize, 1, cdatasize, 0, BUS_DMA_NOWAIT,
    125       1.1   thorpej 	     &sc->sc_cddmamap)) != 0) {
    126      1.25   tsutsui 		aprint_error_dev(sc->sc_dev,
    127      1.25   tsutsui 		    "unable to create control data DMA map, error = %d\n",
    128      1.25   tsutsui 		    error);
    129       1.1   thorpej 		goto fail_2;
    130       1.1   thorpej 	}
    131       1.1   thorpej 
    132       1.1   thorpej 	if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_cddmamap,
    133       1.1   thorpej 	     sc->sc_cdata16, cdatasize, NULL, BUS_DMA_NOWAIT)) != 0) {
    134      1.25   tsutsui 		aprint_error_dev(sc->sc_dev,
    135      1.25   tsutsui 		    "unable to load control data DMA map, error = %d\n", error);
    136       1.1   thorpej 		goto fail_3;
    137       1.1   thorpej 	}
    138       1.1   thorpej 
    139       1.1   thorpej 	/*
    140       1.1   thorpej 	 * Create the transmit buffer DMA maps.
    141       1.1   thorpej 	 */
    142       1.1   thorpej 	for (i = 0; i < SONIC_NTXDESC; i++) {
    143       1.1   thorpej 		if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES,
    144       1.1   thorpej 		     SONIC_NTXFRAGS, MCLBYTES, 0, BUS_DMA_NOWAIT,
    145       1.1   thorpej 		     &sc->sc_txsoft[i].ds_dmamap)) != 0) {
    146      1.25   tsutsui 			aprint_error_dev(sc->sc_dev,
    147      1.25   tsutsui 			    "unable to create tx DMA map %d, error = %d\n",
    148      1.25   tsutsui 			    i, error);
    149       1.1   thorpej 			goto fail_4;
    150       1.1   thorpej 		}
    151       1.1   thorpej 	}
    152       1.1   thorpej 
    153       1.1   thorpej 	/*
    154       1.1   thorpej 	 * Create the receive buffer DMA maps.
    155       1.1   thorpej 	 */
    156       1.1   thorpej 	for (i = 0; i < SONIC_NRXDESC; i++) {
    157       1.1   thorpej 		if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1,
    158       1.1   thorpej 		     MCLBYTES, 0, BUS_DMA_NOWAIT,
    159       1.1   thorpej 		     &sc->sc_rxsoft[i].ds_dmamap)) != 0) {
    160      1.25   tsutsui 			aprint_error_dev(sc->sc_dev,
    161      1.25   tsutsui 			    "unable to create rx DMA map %d, error = %d\n",
    162      1.25   tsutsui 			    i, error);
    163       1.1   thorpej 			goto fail_5;
    164       1.1   thorpej 		}
    165       1.1   thorpej 		sc->sc_rxsoft[i].ds_mbuf = NULL;
    166       1.1   thorpej 	}
    167       1.1   thorpej 
    168       1.1   thorpej 	/*
    169       1.6    bouyer 	 * create and map the pad buffer
    170       1.6    bouyer 	 */
    171       1.6    bouyer 	if ((error = bus_dmamap_create(sc->sc_dmat, ETHER_PAD_LEN, 1,
    172       1.8   tsutsui 	    ETHER_PAD_LEN, 0, BUS_DMA_NOWAIT, &sc->sc_nulldmamap)) != 0) {
    173      1.25   tsutsui 		aprint_error_dev(sc->sc_dev,
    174      1.25   tsutsui 		    "unable to create pad buffer DMA map, error = %d\n", error);
    175       1.6    bouyer 		goto fail_5;
    176       1.6    bouyer 	}
    177       1.6    bouyer 
    178       1.6    bouyer 	if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_nulldmamap,
    179       1.6    bouyer 	    nullbuf, ETHER_PAD_LEN, NULL, BUS_DMA_NOWAIT)) != 0) {
    180      1.25   tsutsui 		aprint_error_dev(sc->sc_dev,
    181      1.25   tsutsui 		    "unable to load pad buffer DMA map, error = %d\n", error);
    182       1.6    bouyer 		goto fail_6;
    183       1.6    bouyer 	}
    184       1.6    bouyer 	bus_dmamap_sync(sc->sc_dmat, sc->sc_nulldmamap, 0, ETHER_PAD_LEN,
    185       1.6    bouyer 	    BUS_DMASYNC_PREWRITE);
    186       1.6    bouyer 
    187       1.6    bouyer 	/*
    188       1.1   thorpej 	 * Reset the chip to a known state.
    189       1.1   thorpej 	 */
    190       1.1   thorpej 	sonic_reset(sc);
    191       1.1   thorpej 
    192      1.25   tsutsui 	aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n",
    193       1.1   thorpej 	    ether_sprintf(enaddr));
    194       1.1   thorpej 
    195      1.25   tsutsui 	strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ);
    196       1.1   thorpej 	ifp->if_softc = sc;
    197       1.1   thorpej 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
    198       1.1   thorpej 	ifp->if_ioctl = sonic_ioctl;
    199       1.1   thorpej 	ifp->if_start = sonic_start;
    200       1.1   thorpej 	ifp->if_watchdog = sonic_watchdog;
    201       1.1   thorpej 	ifp->if_init = sonic_init;
    202       1.1   thorpej 	ifp->if_stop = sonic_stop;
    203       1.1   thorpej 	IFQ_SET_READY(&ifp->if_snd);
    204       1.1   thorpej 
    205       1.1   thorpej 	/*
    206      1.27   tsutsui 	 * We can support 802.1Q VLAN-sized frames.
    207      1.22   tsutsui 	 */
    208      1.22   tsutsui 	sc->sc_ethercom.ec_capabilities |= ETHERCAP_VLAN_MTU;
    209      1.22   tsutsui 
    210      1.22   tsutsui 	/*
    211       1.1   thorpej 	 * Attach the interface.
    212       1.1   thorpej 	 */
    213       1.1   thorpej 	if_attach(ifp);
    214       1.1   thorpej 	ether_ifattach(ifp, enaddr);
    215       1.1   thorpej 
    216       1.1   thorpej 	/*
    217       1.1   thorpej 	 * Make sure the interface is shutdown during reboot.
    218       1.1   thorpej 	 */
    219      1.30   tsutsui 	if (pmf_device_register1(sc->sc_dev, NULL, NULL, sonic_shutdown))
    220      1.32   tsutsui 		pmf_class_network_register(sc->sc_dev, ifp);
    221      1.30   tsutsui 	else
    222      1.25   tsutsui 		aprint_error_dev(sc->sc_dev,
    223      1.29   tsutsui 		    "couldn't establish power handler\n");
    224      1.29   tsutsui 
    225       1.1   thorpej 	return;
    226       1.1   thorpej 
    227       1.1   thorpej 	/*
    228       1.1   thorpej 	 * Free any resources we've allocated during the failed attach
    229       1.1   thorpej 	 * attempt.  Do this in reverse order and fall through.
    230       1.1   thorpej 	 */
    231       1.6    bouyer  fail_6:
    232       1.6    bouyer 	bus_dmamap_destroy(sc->sc_dmat, sc->sc_nulldmamap);
    233       1.1   thorpej  fail_5:
    234       1.1   thorpej 	for (i = 0; i < SONIC_NRXDESC; i++) {
    235       1.1   thorpej 		if (sc->sc_rxsoft[i].ds_dmamap != NULL)
    236       1.1   thorpej 			bus_dmamap_destroy(sc->sc_dmat,
    237       1.1   thorpej 			    sc->sc_rxsoft[i].ds_dmamap);
    238       1.1   thorpej 	}
    239       1.1   thorpej  fail_4:
    240       1.1   thorpej 	for (i = 0; i < SONIC_NTXDESC; i++) {
    241       1.1   thorpej 		if (sc->sc_txsoft[i].ds_dmamap != NULL)
    242       1.1   thorpej 			bus_dmamap_destroy(sc->sc_dmat,
    243       1.1   thorpej 			    sc->sc_txsoft[i].ds_dmamap);
    244       1.1   thorpej 	}
    245       1.1   thorpej 	bus_dmamap_unload(sc->sc_dmat, sc->sc_cddmamap);
    246       1.1   thorpej  fail_3:
    247       1.1   thorpej 	bus_dmamap_destroy(sc->sc_dmat, sc->sc_cddmamap);
    248       1.1   thorpej  fail_2:
    249      1.25   tsutsui 	bus_dmamem_unmap(sc->sc_dmat, (void *)sc->sc_cdata16, cdatasize);
    250       1.1   thorpej  fail_1:
    251       1.1   thorpej 	bus_dmamem_free(sc->sc_dmat, &seg, rseg);
    252       1.1   thorpej  fail_0:
    253       1.1   thorpej 	return;
    254       1.1   thorpej }
    255       1.1   thorpej 
    256       1.1   thorpej /*
    257       1.1   thorpej  * sonic_shutdown:
    258       1.1   thorpej  *
    259       1.1   thorpej  *	Make sure the interface is stopped at reboot.
    260       1.1   thorpej  */
    261      1.28   tsutsui bool
    262      1.28   tsutsui sonic_shutdown(device_t self, int howto)
    263       1.1   thorpej {
    264      1.28   tsutsui 	struct sonic_softc *sc = device_private(self);
    265       1.1   thorpej 
    266       1.1   thorpej 	sonic_stop(&sc->sc_ethercom.ec_if, 1);
    267      1.28   tsutsui 
    268      1.28   tsutsui 	return true;
    269       1.1   thorpej }
    270       1.1   thorpej 
    271       1.1   thorpej /*
    272       1.1   thorpej  * sonic_start:		[ifnet interface function]
    273       1.1   thorpej  *
    274       1.1   thorpej  *	Start packet transmission on the interface.
    275       1.1   thorpej  */
    276       1.1   thorpej void
    277       1.1   thorpej sonic_start(struct ifnet *ifp)
    278       1.1   thorpej {
    279       1.1   thorpej 	struct sonic_softc *sc = ifp->if_softc;
    280       1.1   thorpej 	struct mbuf *m0, *m;
    281       1.1   thorpej 	struct sonic_tda16 *tda16;
    282       1.1   thorpej 	struct sonic_tda32 *tda32;
    283       1.1   thorpej 	struct sonic_descsoft *ds;
    284       1.1   thorpej 	bus_dmamap_t dmamap;
    285       1.9   tsutsui 	int error, olasttx, nexttx, opending, totlen, olseg;
    286       1.9   tsutsui 	int seg = 0;	/* XXX: gcc */
    287       1.1   thorpej 
    288       1.1   thorpej 	if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
    289       1.1   thorpej 		return;
    290       1.1   thorpej 
    291       1.1   thorpej 	/*
    292       1.1   thorpej 	 * Remember the previous txpending and the current "last txdesc
    293       1.1   thorpej 	 * used" index.
    294       1.1   thorpej 	 */
    295       1.1   thorpej 	opending = sc->sc_txpending;
    296       1.1   thorpej 	olasttx = sc->sc_txlast;
    297       1.1   thorpej 
    298       1.1   thorpej 	/*
    299       1.1   thorpej 	 * Loop through the send queue, setting up transmit descriptors
    300       1.1   thorpej 	 * until we drain the queue, or use up all available transmit
    301       1.1   thorpej 	 * descriptors.  Leave one at the end for sanity's sake.
    302       1.1   thorpej 	 */
    303       1.1   thorpej 	while (sc->sc_txpending < (SONIC_NTXDESC - 1)) {
    304       1.1   thorpej 		/*
    305       1.1   thorpej 		 * Grab a packet off the queue.
    306       1.1   thorpej 		 */
    307       1.1   thorpej 		IFQ_POLL(&ifp->if_snd, m0);
    308       1.1   thorpej 		if (m0 == NULL)
    309       1.1   thorpej 			break;
    310       1.1   thorpej 		m = NULL;
    311       1.1   thorpej 
    312       1.1   thorpej 		/*
    313       1.1   thorpej 		 * Get the next available transmit descriptor.
    314       1.1   thorpej 		 */
    315       1.1   thorpej 		nexttx = SONIC_NEXTTX(sc->sc_txlast);
    316       1.1   thorpej 		ds = &sc->sc_txsoft[nexttx];
    317       1.1   thorpej 		dmamap = ds->ds_dmamap;
    318       1.1   thorpej 
    319       1.1   thorpej 		/*
    320       1.1   thorpej 		 * Load the DMA map.  If this fails, the packet either
    321       1.1   thorpej 		 * didn't fit in the allotted number of frags, or we were
    322       1.1   thorpej 		 * short on resources.  In this case, we'll copy and try
    323       1.1   thorpej 		 * again.
    324       1.1   thorpej 		 */
    325       1.6    bouyer 		if ((error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0,
    326       1.6    bouyer 		    BUS_DMA_WRITE|BUS_DMA_NOWAIT)) != 0 ||
    327       1.6    bouyer 		    (m0->m_pkthdr.len < ETHER_PAD_LEN &&
    328       1.7   tsutsui 		    dmamap->dm_nsegs == SONIC_NTXFRAGS)) {
    329       1.6    bouyer 			if (error == 0)
    330       1.6    bouyer 				bus_dmamap_unload(sc->sc_dmat, dmamap);
    331       1.1   thorpej 			MGETHDR(m, M_DONTWAIT, MT_DATA);
    332       1.1   thorpej 			if (m == NULL) {
    333      1.25   tsutsui 				printf("%s: unable to allocate Tx mbuf\n",
    334      1.25   tsutsui 				    device_xname(sc->sc_dev));
    335       1.1   thorpej 				break;
    336       1.1   thorpej 			}
    337       1.1   thorpej 			if (m0->m_pkthdr.len > MHLEN) {
    338       1.1   thorpej 				MCLGET(m, M_DONTWAIT);
    339       1.1   thorpej 				if ((m->m_flags & M_EXT) == 0) {
    340      1.25   tsutsui 					printf("%s: unable to allocate Tx "
    341      1.25   tsutsui 					    "cluster\n",
    342      1.25   tsutsui 					    device_xname(sc->sc_dev));
    343       1.1   thorpej 					m_freem(m);
    344       1.1   thorpej 					break;
    345       1.1   thorpej 				}
    346       1.1   thorpej 			}
    347      1.14  christos 			m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, void *));
    348       1.1   thorpej 			m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len;
    349       1.1   thorpej 			error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap,
    350       1.3   thorpej 			    m, BUS_DMA_WRITE|BUS_DMA_NOWAIT);
    351       1.1   thorpej 			if (error) {
    352      1.25   tsutsui 				printf("%s: unable to load Tx buffer, "
    353      1.25   tsutsui 				    "error = %d\n", device_xname(sc->sc_dev),
    354      1.25   tsutsui 				    error);
    355       1.1   thorpej 				m_freem(m);
    356       1.1   thorpej 				break;
    357       1.1   thorpej 			}
    358       1.1   thorpej 		}
    359       1.1   thorpej 		IFQ_DEQUEUE(&ifp->if_snd, m0);
    360       1.1   thorpej 		if (m != NULL) {
    361       1.1   thorpej 			m_freem(m0);
    362       1.1   thorpej 			m0 = m;
    363       1.1   thorpej 		}
    364       1.1   thorpej 
    365       1.1   thorpej 		/*
    366       1.1   thorpej 		 * WE ARE NOW COMMITTED TO TRANSMITTING THE PACKET.
    367       1.1   thorpej 		 */
    368       1.1   thorpej 
    369       1.1   thorpej 		/* Sync the DMA map. */
    370       1.1   thorpej 		bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize,
    371       1.1   thorpej 		    BUS_DMASYNC_PREWRITE);
    372       1.1   thorpej 
    373       1.1   thorpej 		/*
    374       1.1   thorpej 		 * Store a pointer to the packet so we can free it later.
    375       1.1   thorpej 		 */
    376       1.1   thorpej 		ds->ds_mbuf = m0;
    377       1.1   thorpej 
    378       1.1   thorpej 		/*
    379       1.1   thorpej 		 * Initialize the transmit descriptor.
    380       1.1   thorpej 		 */
    381       1.1   thorpej 		totlen = 0;
    382       1.1   thorpej 		if (sc->sc_32bit) {
    383       1.1   thorpej 			tda32 = &sc->sc_tda32[nexttx];
    384       1.1   thorpej 			for (seg = 0; seg < dmamap->dm_nsegs; seg++) {
    385       1.1   thorpej 				tda32->tda_frags[seg].frag_ptr1 =
    386       1.1   thorpej 				    htosonic32(sc,
    387       1.1   thorpej 				    (dmamap->dm_segs[seg].ds_addr >> 16) &
    388       1.1   thorpej 				    0xffff);
    389       1.1   thorpej 				tda32->tda_frags[seg].frag_ptr0 =
    390       1.1   thorpej 				    htosonic32(sc,
    391       1.1   thorpej 				    dmamap->dm_segs[seg].ds_addr & 0xffff);
    392       1.1   thorpej 				tda32->tda_frags[seg].frag_size =
    393       1.1   thorpej 				    htosonic32(sc, dmamap->dm_segs[seg].ds_len);
    394       1.1   thorpej 				totlen += dmamap->dm_segs[seg].ds_len;
    395       1.1   thorpej 			}
    396       1.6    bouyer 			if (totlen < ETHER_PAD_LEN) {
    397       1.6    bouyer 				tda32->tda_frags[seg].frag_ptr1 =
    398       1.6    bouyer 				    htosonic32(sc,
    399       1.7   tsutsui 				    (sc->sc_nulldma >> 16) & 0xffff);
    400       1.6    bouyer 				tda32->tda_frags[seg].frag_ptr0 =
    401       1.8   tsutsui 				    htosonic32(sc, sc->sc_nulldma & 0xffff);
    402       1.6    bouyer 				tda32->tda_frags[seg].frag_size =
    403       1.6    bouyer 				    htosonic32(sc, ETHER_PAD_LEN - totlen);
    404       1.6    bouyer 				totlen = ETHER_PAD_LEN;
    405       1.8   tsutsui 				seg++;
    406       1.1   thorpej 			}
    407      1.12     perry 
    408       1.1   thorpej 			tda32->tda_status = 0;
    409       1.1   thorpej 			tda32->tda_pktconfig = 0;
    410       1.1   thorpej 			tda32->tda_pktsize = htosonic32(sc, totlen);
    411       1.1   thorpej 			tda32->tda_fragcnt = htosonic32(sc, seg);
    412       1.1   thorpej 
    413       1.1   thorpej 			/* Link it up. */
    414       1.1   thorpej 			tda32->tda_frags[seg].frag_ptr0 =
    415       1.2   thorpej 			    htosonic32(sc, SONIC_CDTXADDR32(sc,
    416       1.1   thorpej 			    SONIC_NEXTTX(nexttx)) & 0xffff);
    417       1.2   thorpej 
    418       1.2   thorpej 			/* Sync the Tx descriptor. */
    419       1.2   thorpej 			SONIC_CDTXSYNC32(sc, nexttx,
    420       1.2   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    421       1.1   thorpej 		} else {
    422       1.1   thorpej 			tda16 = &sc->sc_tda16[nexttx];
    423       1.1   thorpej 			for (seg = 0; seg < dmamap->dm_nsegs; seg++) {
    424       1.1   thorpej 				tda16->tda_frags[seg].frag_ptr1 =
    425       1.1   thorpej 				    htosonic16(sc,
    426       1.1   thorpej 				    (dmamap->dm_segs[seg].ds_addr >> 16) &
    427       1.1   thorpej 				    0xffff);
    428       1.1   thorpej 				tda16->tda_frags[seg].frag_ptr0 =
    429       1.1   thorpej 				    htosonic16(sc,
    430       1.1   thorpej 				    dmamap->dm_segs[seg].ds_addr & 0xffff);
    431       1.1   thorpej 				tda16->tda_frags[seg].frag_size =
    432       1.1   thorpej 				    htosonic16(sc, dmamap->dm_segs[seg].ds_len);
    433       1.1   thorpej 				totlen += dmamap->dm_segs[seg].ds_len;
    434       1.1   thorpej 			}
    435       1.6    bouyer 			if (totlen < ETHER_PAD_LEN) {
    436       1.6    bouyer 				tda16->tda_frags[seg].frag_ptr1 =
    437       1.6    bouyer 				    htosonic16(sc,
    438       1.6    bouyer 				    (sc->sc_nulldma >> 16) & 0xffff);
    439       1.6    bouyer 				tda16->tda_frags[seg].frag_ptr0 =
    440       1.8   tsutsui 				    htosonic16(sc, sc->sc_nulldma & 0xffff);
    441       1.6    bouyer 				tda16->tda_frags[seg].frag_size =
    442       1.6    bouyer 				    htosonic16(sc, ETHER_PAD_LEN - totlen);
    443       1.6    bouyer 				totlen = ETHER_PAD_LEN;
    444       1.8   tsutsui 				seg++;
    445       1.1   thorpej 			}
    446       1.1   thorpej 
    447       1.1   thorpej 			tda16->tda_status = 0;
    448       1.1   thorpej 			tda16->tda_pktconfig = 0;
    449       1.1   thorpej 			tda16->tda_pktsize = htosonic16(sc, totlen);
    450       1.1   thorpej 			tda16->tda_fragcnt = htosonic16(sc, seg);
    451       1.1   thorpej 
    452       1.1   thorpej 			/* Link it up. */
    453       1.1   thorpej 			tda16->tda_frags[seg].frag_ptr0 =
    454       1.2   thorpej 			    htosonic16(sc, SONIC_CDTXADDR16(sc,
    455       1.1   thorpej 			    SONIC_NEXTTX(nexttx)) & 0xffff);
    456       1.2   thorpej 
    457       1.2   thorpej 			/* Sync the Tx descriptor. */
    458       1.2   thorpej 			SONIC_CDTXSYNC16(sc, nexttx,
    459       1.2   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    460       1.1   thorpej 		}
    461       1.1   thorpej 
    462       1.1   thorpej 		/* Advance the Tx pointer. */
    463       1.1   thorpej 		sc->sc_txpending++;
    464       1.1   thorpej 		sc->sc_txlast = nexttx;
    465       1.1   thorpej 
    466       1.1   thorpej 		/*
    467       1.1   thorpej 		 * Pass the packet to any BPF listeners.
    468       1.1   thorpej 		 */
    469      1.34     joerg 		bpf_mtap(ifp, m0);
    470       1.1   thorpej 	}
    471       1.1   thorpej 
    472       1.1   thorpej 	if (sc->sc_txpending == (SONIC_NTXDESC - 1)) {
    473       1.1   thorpej 		/* No more slots left; notify upper layer. */
    474       1.1   thorpej 		ifp->if_flags |= IFF_OACTIVE;
    475       1.1   thorpej 	}
    476       1.1   thorpej 
    477       1.1   thorpej 	if (sc->sc_txpending != opending) {
    478       1.1   thorpej 		/*
    479       1.1   thorpej 		 * We enqueued packets.  If the transmitter was idle,
    480       1.1   thorpej 		 * reset the txdirty pointer.
    481       1.1   thorpej 		 */
    482       1.1   thorpej 		if (opending == 0)
    483       1.1   thorpej 			sc->sc_txdirty = SONIC_NEXTTX(olasttx);
    484       1.1   thorpej 
    485       1.1   thorpej 		/*
    486       1.1   thorpej 		 * Stop the SONIC on the last packet we've set up,
    487       1.1   thorpej 		 * and clear end-of-list on the descriptor previous
    488       1.1   thorpej 		 * to our new chain.
    489       1.1   thorpej 		 *
    490       1.1   thorpej 		 * NOTE: our `seg' variable should still be valid!
    491       1.1   thorpej 		 */
    492       1.1   thorpej 		if (sc->sc_32bit) {
    493       1.1   thorpej 			olseg =
    494       1.1   thorpej 			    sonic32toh(sc, sc->sc_tda32[olasttx].tda_fragcnt);
    495       1.1   thorpej 			sc->sc_tda32[sc->sc_txlast].tda_frags[seg].frag_ptr0 |=
    496       1.1   thorpej 			    htosonic32(sc, TDA_LINK_EOL);
    497       1.2   thorpej 			SONIC_CDTXSYNC32(sc, sc->sc_txlast,
    498       1.1   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    499       1.1   thorpej 			sc->sc_tda32[olasttx].tda_frags[olseg].frag_ptr0 &=
    500       1.1   thorpej 			    htosonic32(sc, ~TDA_LINK_EOL);
    501       1.2   thorpej 			SONIC_CDTXSYNC32(sc, olasttx,
    502       1.1   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    503       1.1   thorpej 		} else {
    504       1.1   thorpej 			olseg =
    505       1.1   thorpej 			    sonic16toh(sc, sc->sc_tda16[olasttx].tda_fragcnt);
    506       1.1   thorpej 			sc->sc_tda16[sc->sc_txlast].tda_frags[seg].frag_ptr0 |=
    507       1.1   thorpej 			    htosonic16(sc, TDA_LINK_EOL);
    508       1.2   thorpej 			SONIC_CDTXSYNC16(sc, sc->sc_txlast,
    509       1.1   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    510       1.1   thorpej 			sc->sc_tda16[olasttx].tda_frags[olseg].frag_ptr0 &=
    511       1.1   thorpej 			    htosonic16(sc, ~TDA_LINK_EOL);
    512       1.2   thorpej 			SONIC_CDTXSYNC16(sc, olasttx,
    513       1.1   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    514       1.1   thorpej 		}
    515       1.1   thorpej 
    516       1.1   thorpej 		/* Start the transmitter. */
    517       1.1   thorpej 		CSR_WRITE(sc, SONIC_CR, CR_TXP);
    518       1.1   thorpej 
    519       1.1   thorpej 		/* Set a watchdog timer in case the chip flakes out. */
    520       1.1   thorpej 		ifp->if_timer = 5;
    521       1.1   thorpej 	}
    522       1.1   thorpej }
    523       1.1   thorpej 
    524       1.1   thorpej /*
    525       1.1   thorpej  * sonic_watchdog:	[ifnet interface function]
    526       1.1   thorpej  *
    527       1.1   thorpej  *	Watchdog timer handler.
    528       1.1   thorpej  */
    529       1.1   thorpej void
    530       1.1   thorpej sonic_watchdog(struct ifnet *ifp)
    531       1.1   thorpej {
    532       1.1   thorpej 	struct sonic_softc *sc = ifp->if_softc;
    533       1.1   thorpej 
    534      1.25   tsutsui 	printf("%s: device timeout\n", device_xname(sc->sc_dev));
    535       1.1   thorpej 	ifp->if_oerrors++;
    536       1.1   thorpej 
    537      1.25   tsutsui 	(void)sonic_init(ifp);
    538       1.1   thorpej }
    539       1.1   thorpej 
    540       1.1   thorpej /*
    541       1.1   thorpej  * sonic_ioctl:		[ifnet interface function]
    542       1.1   thorpej  *
    543       1.1   thorpej  *	Handle control requests from the operator.
    544       1.1   thorpej  */
    545       1.1   thorpej int
    546      1.14  christos sonic_ioctl(struct ifnet *ifp, u_long cmd, void *data)
    547       1.1   thorpej {
    548       1.1   thorpej 	int s, error;
    549       1.1   thorpej 
    550       1.1   thorpej 	s = splnet();
    551       1.1   thorpej 
    552      1.20    dyoung 	error = ether_ioctl(ifp, cmd, data);
    553      1.20    dyoung 	if (error == ENETRESET) {
    554      1.20    dyoung 		/*
    555      1.20    dyoung 		 * Multicast list has changed; set the hardware
    556      1.20    dyoung 		 * filter accordingly.
    557      1.20    dyoung 		 */
    558      1.20    dyoung 		if (ifp->if_flags & IFF_RUNNING)
    559      1.25   tsutsui 			(void)sonic_init(ifp);
    560      1.20    dyoung 		error = 0;
    561       1.1   thorpej 	}
    562       1.1   thorpej 
    563       1.1   thorpej 	splx(s);
    564      1.25   tsutsui 	return error;
    565       1.1   thorpej }
    566       1.1   thorpej 
    567       1.1   thorpej /*
    568       1.1   thorpej  * sonic_intr:
    569       1.1   thorpej  *
    570       1.1   thorpej  *	Interrupt service routine.
    571       1.1   thorpej  */
    572       1.1   thorpej int
    573       1.1   thorpej sonic_intr(void *arg)
    574       1.1   thorpej {
    575       1.1   thorpej 	struct sonic_softc *sc = arg;
    576       1.1   thorpej 	struct ifnet *ifp = &sc->sc_ethercom.ec_if;
    577       1.1   thorpej 	uint16_t isr;
    578       1.1   thorpej 	int handled = 0, wantinit;
    579       1.1   thorpej 
    580       1.1   thorpej 	for (wantinit = 0; wantinit == 0;) {
    581       1.1   thorpej 		isr = CSR_READ(sc, SONIC_ISR) & sc->sc_imr;
    582       1.1   thorpej 		if (isr == 0)
    583       1.1   thorpej 			break;
    584       1.1   thorpej 		CSR_WRITE(sc, SONIC_ISR, isr);	/* ACK */
    585       1.1   thorpej 
    586       1.1   thorpej 		handled = 1;
    587       1.1   thorpej 
    588       1.1   thorpej 		if (isr & IMR_PRX)
    589       1.1   thorpej 			sonic_rxintr(sc);
    590       1.1   thorpej 
    591       1.1   thorpej 		if (isr & (IMR_PTX|IMR_TXER)) {
    592       1.1   thorpej 			if (sonic_txintr(sc) & TCR_FU) {
    593       1.1   thorpej 				printf("%s: transmit FIFO underrun\n",
    594      1.25   tsutsui 				    device_xname(sc->sc_dev));
    595       1.1   thorpej 				wantinit = 1;
    596       1.1   thorpej 			}
    597       1.1   thorpej 		}
    598       1.1   thorpej 
    599       1.1   thorpej 		if (isr & (IMR_RFO|IMR_RBA|IMR_RBE|IMR_RDE)) {
    600       1.1   thorpej #define	PRINTERR(bit, str)						\
    601       1.1   thorpej 			if (isr & (bit))				\
    602      1.25   tsutsui 				printf("%s: %s\n",device_xname(sc->sc_dev), str)
    603       1.1   thorpej 			PRINTERR(IMR_RFO, "receive FIFO overrun");
    604       1.1   thorpej 			PRINTERR(IMR_RBA, "receive buffer exceeded");
    605       1.1   thorpej 			PRINTERR(IMR_RBE, "receive buffers exhausted");
    606       1.1   thorpej 			PRINTERR(IMR_RDE, "receive descriptors exhausted");
    607       1.1   thorpej 			wantinit = 1;
    608       1.1   thorpej 		}
    609       1.1   thorpej 	}
    610       1.1   thorpej 
    611       1.1   thorpej 	if (handled) {
    612       1.1   thorpej 		if (wantinit)
    613      1.25   tsutsui 			(void)sonic_init(ifp);
    614       1.1   thorpej 		sonic_start(ifp);
    615       1.1   thorpej 	}
    616       1.1   thorpej 
    617      1.25   tsutsui 	return handled;
    618       1.1   thorpej }
    619       1.1   thorpej 
    620       1.1   thorpej /*
    621       1.1   thorpej  * sonic_txintr:
    622       1.1   thorpej  *
    623       1.1   thorpej  *	Helper; handle transmit complete interrupts.
    624       1.1   thorpej  */
    625       1.1   thorpej uint16_t
    626       1.1   thorpej sonic_txintr(struct sonic_softc *sc)
    627       1.1   thorpej {
    628       1.1   thorpej 	struct ifnet *ifp = &sc->sc_ethercom.ec_if;
    629       1.1   thorpej 	struct sonic_descsoft *ds;
    630       1.1   thorpej 	struct sonic_tda32 *tda32;
    631       1.1   thorpej 	struct sonic_tda16 *tda16;
    632       1.1   thorpej 	uint16_t status, totstat = 0;
    633       1.1   thorpej 	int i;
    634       1.1   thorpej 
    635       1.1   thorpej 	ifp->if_flags &= ~IFF_OACTIVE;
    636       1.1   thorpej 
    637       1.1   thorpej 	for (i = sc->sc_txdirty; sc->sc_txpending != 0;
    638       1.1   thorpej 	     i = SONIC_NEXTTX(i), sc->sc_txpending--) {
    639       1.1   thorpej 		ds = &sc->sc_txsoft[i];
    640       1.1   thorpej 
    641       1.1   thorpej 		if (sc->sc_32bit) {
    642       1.2   thorpej 			SONIC_CDTXSYNC32(sc, i,
    643       1.2   thorpej 			    BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
    644       1.1   thorpej 			tda32 = &sc->sc_tda32[i];
    645       1.1   thorpej 			status = sonic32toh(sc, tda32->tda_status);
    646      1.15   tsutsui 			SONIC_CDTXSYNC32(sc, i, BUS_DMASYNC_PREREAD);
    647       1.1   thorpej 		} else {
    648       1.2   thorpej 			SONIC_CDTXSYNC16(sc, i,
    649       1.2   thorpej 			    BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
    650       1.1   thorpej 			tda16 = &sc->sc_tda16[i];
    651       1.1   thorpej 			status = sonic16toh(sc, tda16->tda_status);
    652      1.15   tsutsui 			SONIC_CDTXSYNC16(sc, i, BUS_DMASYNC_PREREAD);
    653       1.1   thorpej 		}
    654       1.1   thorpej 
    655       1.1   thorpej 		if ((status & ~(TCR_EXDIS|TCR_CRCI|TCR_POWC|TCR_PINT)) == 0)
    656       1.1   thorpej 			break;
    657       1.1   thorpej 
    658       1.1   thorpej 		totstat |= status;
    659       1.1   thorpej 
    660       1.1   thorpej 		bus_dmamap_sync(sc->sc_dmat, ds->ds_dmamap, 0,
    661       1.1   thorpej 		    ds->ds_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE);
    662       1.1   thorpej 		bus_dmamap_unload(sc->sc_dmat, ds->ds_dmamap);
    663       1.1   thorpej 		m_freem(ds->ds_mbuf);
    664       1.1   thorpej 		ds->ds_mbuf = NULL;
    665       1.1   thorpej 
    666       1.1   thorpej 		/*
    667       1.1   thorpej 		 * Check for errors and collisions.
    668       1.1   thorpej 		 */
    669       1.1   thorpej 		if (status & TCR_PTX)
    670       1.1   thorpej 			ifp->if_opackets++;
    671       1.1   thorpej 		else
    672       1.1   thorpej 			ifp->if_oerrors++;
    673       1.1   thorpej 		ifp->if_collisions += TDA_STATUS_NCOL(status);
    674       1.1   thorpej 	}
    675       1.1   thorpej 
    676       1.1   thorpej 	/* Update the dirty transmit buffer pointer. */
    677       1.1   thorpej 	sc->sc_txdirty = i;
    678       1.1   thorpej 
    679       1.1   thorpej 	/*
    680       1.1   thorpej 	 * Cancel the watchdog timer if there are no pending
    681       1.1   thorpej 	 * transmissions.
    682       1.1   thorpej 	 */
    683       1.1   thorpej 	if (sc->sc_txpending == 0)
    684       1.1   thorpej 		ifp->if_timer = 0;
    685       1.1   thorpej 
    686      1.25   tsutsui 	return totstat;
    687       1.1   thorpej }
    688       1.1   thorpej 
    689       1.1   thorpej /*
    690       1.1   thorpej  * sonic_rxintr:
    691       1.1   thorpej  *
    692       1.1   thorpej  *	Helper; handle receive interrupts.
    693       1.1   thorpej  */
    694       1.1   thorpej void
    695       1.1   thorpej sonic_rxintr(struct sonic_softc *sc)
    696       1.1   thorpej {
    697       1.1   thorpej 	struct ifnet *ifp = &sc->sc_ethercom.ec_if;
    698       1.1   thorpej 	struct sonic_descsoft *ds;
    699       1.1   thorpej 	struct sonic_rda32 *rda32;
    700       1.1   thorpej 	struct sonic_rda16 *rda16;
    701       1.1   thorpej 	struct mbuf *m;
    702       1.1   thorpej 	int i, len;
    703      1.36    martin 	uint16_t status, bytecount /*, ptr0, ptr1, seqno */;
    704       1.1   thorpej 
    705       1.1   thorpej 	for (i = sc->sc_rxptr;; i = SONIC_NEXTRX(i)) {
    706       1.1   thorpej 		ds = &sc->sc_rxsoft[i];
    707       1.1   thorpej 
    708       1.1   thorpej 		if (sc->sc_32bit) {
    709       1.2   thorpej 			SONIC_CDRXSYNC32(sc, i,
    710       1.2   thorpej 			    BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
    711       1.1   thorpej 			rda32 = &sc->sc_rda32[i];
    712      1.15   tsutsui 			SONIC_CDRXSYNC32(sc, i, BUS_DMASYNC_PREREAD);
    713       1.1   thorpej 			if (rda32->rda_inuse != 0)
    714       1.1   thorpej 				break;
    715       1.1   thorpej 			status = sonic32toh(sc, rda32->rda_status);
    716       1.1   thorpej 			bytecount = sonic32toh(sc, rda32->rda_bytecount);
    717      1.36    martin 			/* ptr0 = sonic32toh(sc, rda32->rda_pkt_ptr0); */
    718      1.36    martin 			/* ptr1 = sonic32toh(sc, rda32->rda_pkt_ptr1); */
    719      1.36    martin 			/* seqno = sonic32toh(sc, rda32->rda_seqno); */
    720       1.1   thorpej 		} else {
    721       1.2   thorpej 			SONIC_CDRXSYNC16(sc, i,
    722       1.2   thorpej 			    BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
    723       1.1   thorpej 			rda16 = &sc->sc_rda16[i];
    724      1.15   tsutsui 			SONIC_CDRXSYNC16(sc, i, BUS_DMASYNC_PREREAD);
    725       1.1   thorpej 			if (rda16->rda_inuse != 0)
    726       1.1   thorpej 				break;
    727       1.1   thorpej 			status = sonic16toh(sc, rda16->rda_status);
    728       1.1   thorpej 			bytecount = sonic16toh(sc, rda16->rda_bytecount);
    729      1.36    martin 			/* ptr0 = sonic16toh(sc, rda16->rda_pkt_ptr0); */
    730      1.36    martin 			/* ptr1 = sonic16toh(sc, rda16->rda_pkt_ptr1); */
    731      1.36    martin 			/* seqno = sonic16toh(sc, rda16->rda_seqno); */
    732       1.1   thorpej 		}
    733       1.1   thorpej 
    734       1.1   thorpej 		/*
    735       1.1   thorpej 		 * Make absolutely sure this is the only packet
    736       1.1   thorpej 		 * in this receive buffer.  Our entire Rx buffer
    737       1.1   thorpej 		 * management scheme depends on this, and if the
    738       1.1   thorpej 		 * SONIC didn't follow our rule, it means we've
    739       1.1   thorpej 		 * misconfigured it.
    740       1.1   thorpej 		 */
    741       1.1   thorpej 		KASSERT(status & RCR_LPKT);
    742       1.1   thorpej 
    743       1.1   thorpej 		/*
    744       1.1   thorpej 		 * Make sure the packet arrived OK.  If an error occurred,
    745       1.1   thorpej 		 * update stats and reset the descriptor.  The buffer will
    746       1.1   thorpej 		 * be reused the next time the descriptor comes up in the
    747       1.1   thorpej 		 * ring.
    748       1.1   thorpej 		 */
    749       1.1   thorpej 		if ((status & RCR_PRX) == 0) {
    750       1.1   thorpej 			if (status & RCR_FAER)
    751      1.25   tsutsui 				printf("%s: Rx frame alignment error\n",
    752      1.25   tsutsui 				    device_xname(sc->sc_dev));
    753       1.1   thorpej 			else if (status & RCR_CRCR)
    754      1.25   tsutsui 				printf("%s: Rx CRC error\n",
    755      1.25   tsutsui 				    device_xname(sc->sc_dev));
    756       1.1   thorpej 			ifp->if_ierrors++;
    757       1.1   thorpej 			SONIC_INIT_RXDESC(sc, i);
    758       1.1   thorpej 			continue;
    759       1.1   thorpej 		}
    760       1.1   thorpej 
    761       1.1   thorpej 		bus_dmamap_sync(sc->sc_dmat, ds->ds_dmamap, 0,
    762       1.1   thorpej 		    ds->ds_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD);
    763       1.1   thorpej 
    764       1.1   thorpej 		/*
    765       1.1   thorpej 		 * The SONIC includes the CRC with every packet.
    766       1.1   thorpej 		 */
    767      1.11   thorpej 		len = bytecount - ETHER_CRC_LEN;
    768       1.1   thorpej 
    769       1.1   thorpej 		/*
    770       1.1   thorpej 		 * Ok, if the chip is in 32-bit mode, then receive
    771       1.1   thorpej 		 * buffers must be aligned to 32-bit boundaries,
    772       1.1   thorpej 		 * which means the payload is misaligned.  In this
    773       1.1   thorpej 		 * case, we must allocate a new mbuf, and copy the
    774       1.1   thorpej 		 * packet into it, scooted forward 2 bytes to ensure
    775       1.1   thorpej 		 * proper alignment.
    776       1.1   thorpej 		 *
    777       1.1   thorpej 		 * Note, in 16-bit mode, we can configure the SONIC
    778       1.1   thorpej 		 * to do what we want, and we have.
    779       1.1   thorpej 		 */
    780       1.1   thorpej #ifndef __NO_STRICT_ALIGNMENT
    781       1.1   thorpej 		if (sc->sc_32bit) {
    782       1.1   thorpej 			MGETHDR(m, M_DONTWAIT, MT_DATA);
    783       1.1   thorpej 			if (m == NULL)
    784       1.1   thorpej 				goto dropit;
    785       1.1   thorpej 			if (len > (MHLEN - 2)) {
    786       1.1   thorpej 				MCLGET(m, M_DONTWAIT);
    787       1.1   thorpej 				if ((m->m_flags & M_EXT) == 0)
    788       1.1   thorpej 					goto dropit;
    789       1.1   thorpej 			}
    790       1.1   thorpej 			m->m_data += 2;
    791       1.1   thorpej 			/*
    792       1.1   thorpej 			 * Note that we use a cluster for incoming frames,
    793       1.1   thorpej 			 * so the buffer is virtually contiguous.
    794       1.1   thorpej 			 */
    795      1.14  christos 			memcpy(mtod(m, void *), mtod(ds->ds_mbuf, void *),
    796       1.1   thorpej 			    len);
    797       1.1   thorpej 			SONIC_INIT_RXDESC(sc, i);
    798       1.1   thorpej 			bus_dmamap_sync(sc->sc_dmat, ds->ds_dmamap, 0,
    799       1.1   thorpej 			    ds->ds_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
    800       1.1   thorpej 		} else
    801       1.1   thorpej #endif /* ! __NO_STRICT_ALIGNMENT */
    802       1.1   thorpej 		/*
    803       1.1   thorpej 		 * If the packet is small enough to fit in a single
    804       1.1   thorpej 		 * header mbuf, allocate one and copy the data into
    805       1.1   thorpej 		 * it.  This greatly reduces memory consumption when
    806       1.1   thorpej 		 * we receive lots of small packets.
    807       1.1   thorpej 		 */
    808       1.1   thorpej 		if (sonic_copy_small != 0 && len <= (MHLEN - 2)) {
    809       1.1   thorpej 			MGETHDR(m, M_DONTWAIT, MT_DATA);
    810       1.1   thorpej 			if (m == NULL)
    811       1.1   thorpej 				goto dropit;
    812       1.1   thorpej 			m->m_data += 2;
    813       1.1   thorpej 			/*
    814       1.1   thorpej 			 * Note that we use a cluster for incoming frames,
    815       1.1   thorpej 			 * so the buffer is virtually contiguous.
    816       1.1   thorpej 			 */
    817      1.14  christos 			memcpy(mtod(m, void *), mtod(ds->ds_mbuf, void *),
    818       1.1   thorpej 			    len);
    819       1.1   thorpej 			SONIC_INIT_RXDESC(sc, i);
    820       1.1   thorpej 			bus_dmamap_sync(sc->sc_dmat, ds->ds_dmamap, 0,
    821       1.1   thorpej 			    ds->ds_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
    822       1.1   thorpej 		} else {
    823       1.1   thorpej 			m = ds->ds_mbuf;
    824       1.1   thorpej 			if (sonic_add_rxbuf(sc, i) != 0) {
    825       1.1   thorpej  dropit:
    826       1.1   thorpej 				ifp->if_ierrors++;
    827       1.1   thorpej 				SONIC_INIT_RXDESC(sc, i);
    828       1.1   thorpej 				bus_dmamap_sync(sc->sc_dmat, ds->ds_dmamap, 0,
    829       1.1   thorpej 				    ds->ds_dmamap->dm_mapsize,
    830       1.1   thorpej 				    BUS_DMASYNC_PREREAD);
    831       1.1   thorpej 				continue;
    832       1.1   thorpej 			}
    833       1.1   thorpej 		}
    834       1.1   thorpej 
    835  1.36.6.2     skrll 		m_set_rcvif(m, ifp);
    836       1.1   thorpej 		m->m_pkthdr.len = m->m_len = len;
    837       1.1   thorpej 
    838       1.1   thorpej 		/* Pass it on. */
    839  1.36.6.1     skrll 		if_percpuq_enqueue(ifp->if_percpuq, m);
    840       1.1   thorpej 	}
    841       1.1   thorpej 
    842       1.1   thorpej 	/* Update the receive pointer. */
    843       1.1   thorpej 	sc->sc_rxptr = i;
    844       1.1   thorpej 	CSR_WRITE(sc, SONIC_RWR, SONIC_CDRRADDR(sc, SONIC_PREVRX(i)));
    845       1.1   thorpej }
    846       1.1   thorpej 
    847       1.1   thorpej /*
    848       1.1   thorpej  * sonic_reset:
    849       1.1   thorpej  *
    850       1.1   thorpej  *	Perform a soft reset on the SONIC.
    851       1.1   thorpej  */
    852       1.1   thorpej void
    853       1.1   thorpej sonic_reset(struct sonic_softc *sc)
    854       1.1   thorpej {
    855       1.1   thorpej 
    856      1.16   tsutsui 	/* stop TX, RX and timer, and ensure RST is clear */
    857      1.16   tsutsui 	CSR_WRITE(sc, SONIC_CR, CR_STP | CR_RXDIS | CR_HTX);
    858      1.16   tsutsui 	delay(1000);
    859      1.16   tsutsui 
    860       1.1   thorpej 	CSR_WRITE(sc, SONIC_CR, CR_RST);
    861       1.1   thorpej 	delay(1000);
    862      1.16   tsutsui 
    863      1.16   tsutsui 	/* clear all interrupts */
    864      1.16   tsutsui 	CSR_WRITE(sc, SONIC_IMR, 0);
    865      1.16   tsutsui 	CSR_WRITE(sc, SONIC_ISR, IMR_ALL);
    866      1.16   tsutsui 
    867       1.1   thorpej 	CSR_WRITE(sc, SONIC_CR, 0);
    868       1.1   thorpej 	delay(1000);
    869       1.1   thorpej }
    870       1.1   thorpej 
    871       1.1   thorpej /*
    872       1.1   thorpej  * sonic_init:		[ifnet interface function]
    873       1.1   thorpej  *
    874       1.1   thorpej  *	Initialize the interface.  Must be called at splnet().
    875       1.1   thorpej  */
    876       1.1   thorpej int
    877       1.1   thorpej sonic_init(struct ifnet *ifp)
    878       1.1   thorpej {
    879       1.1   thorpej 	struct sonic_softc *sc = ifp->if_softc;
    880       1.1   thorpej 	struct sonic_descsoft *ds;
    881       1.1   thorpej 	int i, error = 0;
    882       1.1   thorpej 	uint16_t reg;
    883       1.1   thorpej 
    884       1.1   thorpej 	/*
    885       1.1   thorpej 	 * Cancel any pending I/O.
    886       1.1   thorpej 	 */
    887       1.1   thorpej 	sonic_stop(ifp, 0);
    888       1.1   thorpej 
    889       1.1   thorpej 	/*
    890       1.1   thorpej 	 * Reset the SONIC to a known state.
    891       1.1   thorpej 	 */
    892       1.1   thorpej 	sonic_reset(sc);
    893       1.1   thorpej 
    894       1.1   thorpej 	/*
    895       1.1   thorpej 	 * Bring the SONIC into reset state, and program the DCR.
    896       1.1   thorpej 	 *
    897       1.1   thorpej 	 * Note: We don't bother optimizing the transmit and receive
    898      1.17   tsutsui 	 * thresholds, here. TFT/RFT values should be set in MD attachments.
    899       1.1   thorpej 	 */
    900      1.17   tsutsui 	reg = sc->sc_dcr;
    901       1.1   thorpej 	if (sc->sc_32bit)
    902       1.1   thorpej 		reg |= DCR_DW;
    903       1.1   thorpej 	CSR_WRITE(sc, SONIC_CR, CR_RST);
    904       1.1   thorpej 	CSR_WRITE(sc, SONIC_DCR, reg);
    905       1.1   thorpej 	CSR_WRITE(sc, SONIC_DCR2, sc->sc_dcr2);
    906       1.1   thorpej 	CSR_WRITE(sc, SONIC_CR, 0);
    907       1.1   thorpej 
    908       1.1   thorpej 	/*
    909       1.1   thorpej 	 * Initialize the transmit descriptors.
    910       1.1   thorpej 	 */
    911       1.1   thorpej 	if (sc->sc_32bit) {
    912       1.1   thorpej 		for (i = 0; i < SONIC_NTXDESC; i++) {
    913       1.1   thorpej 			memset(&sc->sc_tda32[i], 0, sizeof(struct sonic_tda32));
    914       1.2   thorpej 			SONIC_CDTXSYNC32(sc, i,
    915       1.1   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    916       1.1   thorpej 		}
    917       1.1   thorpej 	} else {
    918       1.1   thorpej 		for (i = 0; i < SONIC_NTXDESC; i++) {
    919       1.1   thorpej 			memset(&sc->sc_tda16[i], 0, sizeof(struct sonic_tda16));
    920       1.2   thorpej 			SONIC_CDTXSYNC16(sc, i,
    921       1.1   thorpej 			    BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
    922       1.1   thorpej 		}
    923       1.1   thorpej 	}
    924       1.1   thorpej 	sc->sc_txpending = 0;
    925       1.1   thorpej 	sc->sc_txdirty = 0;
    926       1.1   thorpej 	sc->sc_txlast = SONIC_NTXDESC - 1;
    927       1.1   thorpej 
    928       1.1   thorpej 	/*
    929       1.1   thorpej 	 * Initialize the receive descriptor ring.
    930       1.1   thorpej 	 */
    931       1.1   thorpej 	for (i = 0; i < SONIC_NRXDESC; i++) {
    932       1.1   thorpej 		ds = &sc->sc_rxsoft[i];
    933       1.1   thorpej 		if (ds->ds_mbuf == NULL) {
    934       1.1   thorpej 			if ((error = sonic_add_rxbuf(sc, i)) != 0) {
    935      1.25   tsutsui 				printf("%s: unable to allocate or map Rx "
    936       1.1   thorpej 				    "buffer %d, error = %d\n",
    937      1.25   tsutsui 				    device_xname(sc->sc_dev), i, error);
    938       1.1   thorpej 				/*
    939       1.1   thorpej 				 * XXX Should attempt to run with fewer receive
    940       1.1   thorpej 				 * XXX buffers instead of just failing.
    941       1.1   thorpej 				 */
    942       1.1   thorpej 				sonic_rxdrain(sc);
    943       1.1   thorpej 				goto out;
    944       1.1   thorpej 			}
    945       1.4   tsutsui 		} else
    946       1.4   tsutsui 			SONIC_INIT_RXDESC(sc, i);
    947       1.1   thorpej 	}
    948       1.1   thorpej 	sc->sc_rxptr = 0;
    949       1.1   thorpej 
    950       1.1   thorpej 	/* Give the transmit ring to the SONIC. */
    951       1.1   thorpej 	CSR_WRITE(sc, SONIC_UTDAR, (SONIC_CDTXADDR(sc, 0) >> 16) & 0xffff);
    952       1.1   thorpej 	CSR_WRITE(sc, SONIC_CTDAR, SONIC_CDTXADDR(sc, 0) & 0xffff);
    953       1.1   thorpej 
    954       1.1   thorpej 	/* Give the receive descriptor ring to the SONIC. */
    955       1.1   thorpej 	CSR_WRITE(sc, SONIC_URDAR, (SONIC_CDRXADDR(sc, 0) >> 16) & 0xffff);
    956       1.1   thorpej 	CSR_WRITE(sc, SONIC_CRDAR, SONIC_CDRXADDR(sc, 0) & 0xffff);
    957       1.1   thorpej 
    958       1.1   thorpej 	/* Give the receive buffer ring to the SONIC. */
    959       1.1   thorpej 	CSR_WRITE(sc, SONIC_URRAR, (SONIC_CDRRADDR(sc, 0) >> 16) & 0xffff);
    960       1.1   thorpej 	CSR_WRITE(sc, SONIC_RSAR, SONIC_CDRRADDR(sc, 0) & 0xffff);
    961       1.1   thorpej 	if (sc->sc_32bit)
    962       1.1   thorpej 		CSR_WRITE(sc, SONIC_REAR,
    963       1.1   thorpej 		    (SONIC_CDRRADDR(sc, SONIC_NRXDESC - 1) +
    964       1.1   thorpej 		    sizeof(struct sonic_rra32)) & 0xffff);
    965       1.1   thorpej 	else
    966       1.1   thorpej 		CSR_WRITE(sc, SONIC_REAR,
    967       1.1   thorpej 		    (SONIC_CDRRADDR(sc, SONIC_NRXDESC - 1) +
    968       1.1   thorpej 		    sizeof(struct sonic_rra16)) & 0xffff);
    969       1.1   thorpej 	CSR_WRITE(sc, SONIC_RRR, SONIC_CDRRADDR(sc, 0) & 0xffff);
    970       1.1   thorpej 	CSR_WRITE(sc, SONIC_RWR, SONIC_CDRRADDR(sc, SONIC_NRXDESC - 1));
    971       1.1   thorpej 
    972       1.1   thorpej 	/*
    973       1.1   thorpej 	 * Set the End-Of-Buffer counter such that only one packet
    974       1.1   thorpej 	 * will be placed into each buffer we provide.  Note we are
    975       1.1   thorpej 	 * following the recommendation of section 3.4.4 of the manual
    976       1.1   thorpej 	 * here, and have "lengthened" the receive buffers accordingly.
    977       1.1   thorpej 	 */
    978       1.1   thorpej 	if (sc->sc_32bit)
    979       1.1   thorpej 		CSR_WRITE(sc, SONIC_EOBC, (ETHER_MAX_LEN + 2) / 2);
    980       1.1   thorpej 	else
    981       1.1   thorpej 		CSR_WRITE(sc, SONIC_EOBC, (ETHER_MAX_LEN / 2));
    982       1.1   thorpej 
    983       1.1   thorpej 	/* Reset the receive sequence counter. */
    984       1.1   thorpej 	CSR_WRITE(sc, SONIC_RSC, 0);
    985       1.1   thorpej 
    986       1.1   thorpej 	/* Clear the tally registers. */
    987       1.1   thorpej 	CSR_WRITE(sc, SONIC_CRCETC, 0xffff);
    988       1.1   thorpej 	CSR_WRITE(sc, SONIC_FAET, 0xffff);
    989       1.1   thorpej 	CSR_WRITE(sc, SONIC_MPT, 0xffff);
    990       1.1   thorpej 
    991       1.1   thorpej 	/* Set the receive filter. */
    992       1.1   thorpej 	sonic_set_filter(sc);
    993       1.1   thorpej 
    994       1.1   thorpej 	/*
    995       1.1   thorpej 	 * Set the interrupt mask register.
    996       1.1   thorpej 	 */
    997       1.1   thorpej 	sc->sc_imr = IMR_RFO | IMR_RBA | IMR_RBE | IMR_RDE |
    998       1.1   thorpej 	    IMR_TXER | IMR_PTX | IMR_PRX;
    999       1.1   thorpej 	CSR_WRITE(sc, SONIC_IMR, sc->sc_imr);
   1000       1.1   thorpej 
   1001       1.1   thorpej 	/*
   1002       1.1   thorpej 	 * Start the receive process in motion.  Note, we don't
   1003       1.1   thorpej 	 * start the transmit process until we actually try to
   1004       1.1   thorpej 	 * transmit packets.
   1005       1.1   thorpej 	 */
   1006       1.1   thorpej 	CSR_WRITE(sc, SONIC_CR, CR_RXEN | CR_RRRA);
   1007       1.1   thorpej 
   1008       1.1   thorpej 	/*
   1009       1.1   thorpej 	 * ...all done!
   1010       1.1   thorpej 	 */
   1011       1.1   thorpej 	ifp->if_flags |= IFF_RUNNING;
   1012       1.1   thorpej 	ifp->if_flags &= ~IFF_OACTIVE;
   1013       1.1   thorpej 
   1014       1.1   thorpej  out:
   1015       1.1   thorpej 	if (error)
   1016      1.25   tsutsui 		printf("%s: interface not running\n", device_xname(sc->sc_dev));
   1017      1.25   tsutsui 	return error;
   1018       1.1   thorpej }
   1019       1.1   thorpej 
   1020       1.1   thorpej /*
   1021       1.1   thorpej  * sonic_rxdrain:
   1022       1.1   thorpej  *
   1023       1.1   thorpej  *	Drain the receive queue.
   1024       1.1   thorpej  */
   1025       1.1   thorpej void
   1026       1.1   thorpej sonic_rxdrain(struct sonic_softc *sc)
   1027       1.1   thorpej {
   1028       1.1   thorpej 	struct sonic_descsoft *ds;
   1029       1.1   thorpej 	int i;
   1030       1.1   thorpej 
   1031       1.1   thorpej 	for (i = 0; i < SONIC_NRXDESC; i++) {
   1032       1.1   thorpej 		ds = &sc->sc_rxsoft[i];
   1033       1.1   thorpej 		if (ds->ds_mbuf != NULL) {
   1034       1.1   thorpej 			bus_dmamap_unload(sc->sc_dmat, ds->ds_dmamap);
   1035       1.1   thorpej 			m_freem(ds->ds_mbuf);
   1036       1.1   thorpej 			ds->ds_mbuf = NULL;
   1037       1.1   thorpej 		}
   1038       1.1   thorpej 	}
   1039       1.1   thorpej }
   1040       1.1   thorpej 
   1041       1.1   thorpej /*
   1042       1.1   thorpej  * sonic_stop:		[ifnet interface function]
   1043       1.1   thorpej  *
   1044       1.1   thorpej  *	Stop transmission on the interface.
   1045       1.1   thorpej  */
   1046       1.1   thorpej void
   1047       1.1   thorpej sonic_stop(struct ifnet *ifp, int disable)
   1048       1.1   thorpej {
   1049       1.1   thorpej 	struct sonic_softc *sc = ifp->if_softc;
   1050       1.1   thorpej 	struct sonic_descsoft *ds;
   1051       1.1   thorpej 	int i;
   1052       1.1   thorpej 
   1053       1.1   thorpej 	/*
   1054       1.1   thorpej 	 * Disable interrupts.
   1055       1.1   thorpej 	 */
   1056       1.1   thorpej 	CSR_WRITE(sc, SONIC_IMR, 0);
   1057       1.1   thorpej 
   1058       1.1   thorpej 	/*
   1059       1.1   thorpej 	 * Stop the transmitter, receiver, and timer.
   1060       1.1   thorpej 	 */
   1061       1.1   thorpej 	CSR_WRITE(sc, SONIC_CR, CR_HTX|CR_RXDIS|CR_STP);
   1062       1.1   thorpej 	for (i = 0; i < 1000; i++) {
   1063       1.1   thorpej 		if ((CSR_READ(sc, SONIC_CR) & (CR_TXP|CR_RXEN|CR_ST)) == 0)
   1064       1.1   thorpej 			break;
   1065       1.1   thorpej 		delay(2);
   1066       1.1   thorpej 	}
   1067       1.1   thorpej 	if ((CSR_READ(sc, SONIC_CR) & (CR_TXP|CR_RXEN|CR_ST)) != 0)
   1068      1.25   tsutsui 		printf("%s: SONIC failed to stop\n", device_xname(sc->sc_dev));
   1069       1.1   thorpej 
   1070       1.1   thorpej 	/*
   1071       1.1   thorpej 	 * Release any queued transmit buffers.
   1072       1.1   thorpej 	 */
   1073       1.1   thorpej 	for (i = 0; i < SONIC_NTXDESC; i++) {
   1074       1.1   thorpej 		ds = &sc->sc_txsoft[i];
   1075       1.1   thorpej 		if (ds->ds_mbuf != NULL) {
   1076       1.1   thorpej 			bus_dmamap_unload(sc->sc_dmat, ds->ds_dmamap);
   1077       1.1   thorpej 			m_freem(ds->ds_mbuf);
   1078       1.1   thorpej 			ds->ds_mbuf = NULL;
   1079       1.1   thorpej 		}
   1080       1.1   thorpej 	}
   1081       1.1   thorpej 
   1082       1.1   thorpej 	/*
   1083       1.1   thorpej 	 * Mark the interface down and cancel the watchdog timer.
   1084       1.1   thorpej 	 */
   1085       1.1   thorpej 	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
   1086       1.1   thorpej 	ifp->if_timer = 0;
   1087      1.21    dyoung 
   1088      1.21    dyoung 	if (disable)
   1089      1.21    dyoung 		sonic_rxdrain(sc);
   1090       1.1   thorpej }
   1091       1.1   thorpej 
   1092       1.1   thorpej /*
   1093       1.1   thorpej  * sonic_add_rxbuf:
   1094       1.1   thorpej  *
   1095       1.1   thorpej  *	Add a receive buffer to the indicated descriptor.
   1096       1.1   thorpej  */
   1097       1.1   thorpej int
   1098       1.1   thorpej sonic_add_rxbuf(struct sonic_softc *sc, int idx)
   1099       1.1   thorpej {
   1100       1.1   thorpej 	struct sonic_descsoft *ds = &sc->sc_rxsoft[idx];
   1101       1.1   thorpej 	struct mbuf *m;
   1102       1.1   thorpej 	int error;
   1103       1.1   thorpej 
   1104       1.1   thorpej 	MGETHDR(m, M_DONTWAIT, MT_DATA);
   1105       1.1   thorpej 	if (m == NULL)
   1106      1.25   tsutsui 		return ENOBUFS;
   1107       1.1   thorpej 
   1108       1.1   thorpej 	MCLGET(m, M_DONTWAIT);
   1109       1.1   thorpej 	if ((m->m_flags & M_EXT) == 0) {
   1110       1.1   thorpej 		m_freem(m);
   1111      1.25   tsutsui 		return ENOBUFS;
   1112       1.1   thorpej 	}
   1113       1.1   thorpej 
   1114       1.1   thorpej 	if (ds->ds_mbuf != NULL)
   1115       1.1   thorpej 		bus_dmamap_unload(sc->sc_dmat, ds->ds_dmamap);
   1116       1.1   thorpej 
   1117       1.1   thorpej 	ds->ds_mbuf = m;
   1118       1.1   thorpej 
   1119       1.1   thorpej 	error = bus_dmamap_load(sc->sc_dmat, ds->ds_dmamap,
   1120       1.3   thorpej 	    m->m_ext.ext_buf, m->m_ext.ext_size, NULL,
   1121       1.3   thorpej 	    BUS_DMA_READ|BUS_DMA_NOWAIT);
   1122      1.12     perry 	if (error) {
   1123      1.25   tsutsui 		printf("%s: can't load rx DMA map %d, error = %d\n",
   1124      1.25   tsutsui 		    device_xname(sc->sc_dev), idx, error);
   1125       1.1   thorpej 		panic("sonic_add_rxbuf");	/* XXX */
   1126       1.1   thorpej 	}
   1127       1.1   thorpej 
   1128       1.1   thorpej 	bus_dmamap_sync(sc->sc_dmat, ds->ds_dmamap, 0,
   1129       1.1   thorpej 	    ds->ds_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
   1130       1.1   thorpej 
   1131       1.1   thorpej 	SONIC_INIT_RXDESC(sc, idx);
   1132       1.1   thorpej 
   1133      1.25   tsutsui 	return 0;
   1134       1.1   thorpej }
   1135       1.1   thorpej 
   1136       1.1   thorpej static void
   1137       1.1   thorpej sonic_set_camentry(struct sonic_softc *sc, int entry, const uint8_t *enaddr)
   1138       1.1   thorpej {
   1139       1.1   thorpej 
   1140       1.1   thorpej 	if (sc->sc_32bit) {
   1141       1.1   thorpej 		struct sonic_cda32 *cda = &sc->sc_cda32[entry];
   1142       1.1   thorpej 
   1143       1.1   thorpej 		cda->cda_entry = htosonic32(sc, entry);
   1144       1.1   thorpej 		cda->cda_addr0 = htosonic32(sc, enaddr[0] | (enaddr[1] << 8));
   1145       1.1   thorpej 		cda->cda_addr1 = htosonic32(sc, enaddr[2] | (enaddr[3] << 8));
   1146       1.1   thorpej 		cda->cda_addr2 = htosonic32(sc, enaddr[4] | (enaddr[5] << 8));
   1147       1.1   thorpej 	} else {
   1148       1.1   thorpej 		struct sonic_cda16 *cda = &sc->sc_cda16[entry];
   1149       1.1   thorpej 
   1150       1.1   thorpej 		cda->cda_entry = htosonic16(sc, entry);
   1151       1.1   thorpej 		cda->cda_addr0 = htosonic16(sc, enaddr[0] | (enaddr[1] << 8));
   1152       1.1   thorpej 		cda->cda_addr1 = htosonic16(sc, enaddr[2] | (enaddr[3] << 8));
   1153       1.1   thorpej 		cda->cda_addr2 = htosonic16(sc, enaddr[4] | (enaddr[5] << 8));
   1154       1.1   thorpej 	}
   1155       1.1   thorpej }
   1156       1.1   thorpej 
   1157       1.1   thorpej /*
   1158       1.1   thorpej  * sonic_set_filter:
   1159       1.1   thorpej  *
   1160       1.1   thorpej  *	Set the SONIC receive filter.
   1161       1.1   thorpej  */
   1162       1.1   thorpej void
   1163       1.1   thorpej sonic_set_filter(struct sonic_softc *sc)
   1164       1.1   thorpej {
   1165       1.1   thorpej 	struct ethercom *ec = &sc->sc_ethercom;
   1166       1.1   thorpej 	struct ifnet *ifp = &sc->sc_ethercom.ec_if;
   1167       1.1   thorpej 	struct ether_multi *enm;
   1168       1.1   thorpej 	struct ether_multistep step;
   1169       1.1   thorpej 	int i, entry = 0;
   1170       1.1   thorpej 	uint16_t camvalid = 0;
   1171       1.1   thorpej 	uint16_t rcr = 0;
   1172       1.1   thorpej 
   1173       1.1   thorpej 	if (ifp->if_flags & IFF_BROADCAST)
   1174       1.1   thorpej 		rcr |= RCR_BRD;
   1175       1.1   thorpej 
   1176       1.1   thorpej 	if (ifp->if_flags & IFF_PROMISC) {
   1177       1.1   thorpej 		rcr |= RCR_PRO;
   1178       1.1   thorpej 		goto allmulti;
   1179       1.1   thorpej 	}
   1180       1.1   thorpej 
   1181       1.1   thorpej 	/* Put our station address in the first CAM slot. */
   1182      1.18    dyoung 	sonic_set_camentry(sc, entry, CLLADDR(ifp->if_sadl));
   1183       1.1   thorpej 	camvalid |= (1U << entry);
   1184       1.1   thorpej 	entry++;
   1185       1.1   thorpej 
   1186       1.1   thorpej 	/* Add the multicast addresses to the CAM. */
   1187       1.1   thorpej 	ETHER_FIRST_MULTI(step, ec, enm);
   1188       1.1   thorpej 	while (enm != NULL) {
   1189       1.1   thorpej 		if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) {
   1190       1.1   thorpej 			/*
   1191       1.1   thorpej 			 * We must listen to a range of multicast addresses.
   1192       1.1   thorpej 			 * The only way to do this on the SONIC is to enable
   1193       1.1   thorpej 			 * reception of all multicast packets.
   1194       1.1   thorpej 			 */
   1195       1.1   thorpej 			goto allmulti;
   1196       1.1   thorpej 		}
   1197       1.1   thorpej 
   1198      1.24   tsutsui 		if (entry == SONIC_NCAMENT) {
   1199       1.1   thorpej 			/*
   1200       1.1   thorpej 			 * Out of CAM slots.  Have to enable reception
   1201       1.1   thorpej 			 * of all multicast addresses.
   1202       1.1   thorpej 			 */
   1203       1.1   thorpej 			goto allmulti;
   1204       1.1   thorpej 		}
   1205       1.1   thorpej 
   1206       1.1   thorpej 		sonic_set_camentry(sc, entry, enm->enm_addrlo);
   1207       1.1   thorpej 		camvalid |= (1U << entry);
   1208       1.1   thorpej 		entry++;
   1209       1.1   thorpej 
   1210       1.1   thorpej 		ETHER_NEXT_MULTI(step, enm);
   1211       1.1   thorpej 	}
   1212       1.1   thorpej 
   1213       1.1   thorpej 	ifp->if_flags &= ~IFF_ALLMULTI;
   1214       1.1   thorpej 	goto setit;
   1215       1.1   thorpej 
   1216       1.1   thorpej  allmulti:
   1217       1.1   thorpej 	/* Use only the first CAM slot (station address). */
   1218       1.1   thorpej 	camvalid = 0x0001;
   1219       1.1   thorpej 	entry = 1;
   1220       1.1   thorpej 	rcr |= RCR_AMC;
   1221       1.1   thorpej 
   1222       1.1   thorpej  setit:
   1223      1.24   tsutsui 	/* set mask for the CAM Enable register */
   1224      1.24   tsutsui 	if (sc->sc_32bit) {
   1225      1.24   tsutsui 		if (entry == SONIC_NCAMENT)
   1226      1.24   tsutsui 			sc->sc_cdaenable32 = htosonic32(sc, camvalid);
   1227      1.24   tsutsui 		else
   1228      1.24   tsutsui 			sc->sc_cda32[entry].cda_entry =
   1229      1.24   tsutsui 			    htosonic32(sc, camvalid);
   1230      1.24   tsutsui 	} else {
   1231      1.24   tsutsui 		if (entry == SONIC_NCAMENT)
   1232      1.24   tsutsui 			sc->sc_cdaenable16 = htosonic16(sc, camvalid);
   1233      1.24   tsutsui 		else
   1234      1.24   tsutsui 			sc->sc_cda16[entry].cda_entry =
   1235      1.24   tsutsui 			    htosonic16(sc, camvalid);
   1236      1.24   tsutsui 	}
   1237      1.24   tsutsui 
   1238       1.1   thorpej 	/* Load the CAM. */
   1239       1.1   thorpej 	SONIC_CDCAMSYNC(sc, BUS_DMASYNC_PREWRITE);
   1240       1.1   thorpej 	CSR_WRITE(sc, SONIC_CDP, SONIC_CDCAMADDR(sc) & 0xffff);
   1241       1.1   thorpej 	CSR_WRITE(sc, SONIC_CDC, entry);
   1242       1.1   thorpej 	CSR_WRITE(sc, SONIC_CR, CR_LCAM);
   1243       1.1   thorpej 	for (i = 0; i < 10000; i++) {
   1244       1.1   thorpej 		if ((CSR_READ(sc, SONIC_CR) & CR_LCAM) == 0)
   1245       1.1   thorpej 			break;
   1246       1.1   thorpej 		delay(2);
   1247       1.1   thorpej 	}
   1248       1.1   thorpej 	if (CSR_READ(sc, SONIC_CR) & CR_LCAM)
   1249      1.25   tsutsui 		printf("%s: CAM load failed\n", device_xname(sc->sc_dev));
   1250       1.1   thorpej 	SONIC_CDCAMSYNC(sc, BUS_DMASYNC_POSTWRITE);
   1251       1.1   thorpej 
   1252       1.1   thorpej 	/* Set the receive control register. */
   1253       1.1   thorpej 	CSR_WRITE(sc, SONIC_RCR, rcr);
   1254       1.1   thorpej }
   1255