1032 lines
25 KiB
C
1032 lines
25 KiB
C
/*
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* Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Herb Peyerl.
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* 4. The name of Herb Peyerl may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Created from if_ep.c driver by Fred Gray (fgray@rice.edu) to support
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* the 3c590 family.
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*/
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/*
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* Modified from the FreeBSD 1.1.5.1 version by:
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* Andres Vega Garcia
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* INRIA - Sophia Antipolis, France
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* avega@sophia.inria.fr
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*/
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/*
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* Promiscuous mode added and interrupt logic slightly changed
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* to reduce the number of adapter failures. Transceiver select
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* logic changed to use value from EEPROM. Autoconfiguration
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* features added.
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* Done by:
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* Serge Babkin
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* Chelindbank (Chelyabinsk, Russia)
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* babkin@hq.icb.chel.su
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sockio.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/ethernet.h>
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#include <net/if_arp.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <net/bpf.h>
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#include <dev/vx/if_vxreg.h>
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#define ETHER_MAX_LEN 1518
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#define ETHER_ADDR_LEN 6
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#define ETHER_ALIGN 2
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static struct connector_entry {
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int bit;
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char *name;
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} conn_tab[VX_CONNECTORS] = {
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#define CONNECTOR_UTP 0
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{ 0x08, "utp"},
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#define CONNECTOR_AUI 1
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{ 0x20, "aui"},
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/* dummy */
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{ 0, "???"},
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#define CONNECTOR_BNC 3
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{ 0x10, "bnc"},
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#define CONNECTOR_TX 4
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{ 0x02, "tx"},
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#define CONNECTOR_FX 5
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{ 0x04, "fx"},
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#define CONNECTOR_MII 6
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{ 0x40, "mii"},
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{ 0, "???"}
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};
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/* int vxattach(struct vx_softc *); */
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static void vxtxstat(struct vx_softc *);
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static int vxstatus(struct vx_softc *);
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static void vxinit(void *);
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static int vxioctl(struct ifnet *, u_long, caddr_t);
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static void vxstart(struct ifnet *ifp);
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static void vxwatchdog(struct ifnet *);
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static void vxreset(struct vx_softc *);
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/* void vxstop(struct vx_softc *); */
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static void vxread(struct vx_softc *);
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static struct mbuf *vxget(struct vx_softc *, u_int);
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static void vxmbuffill(void *);
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static void vxmbufempty(struct vx_softc *);
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static void vxsetfilter(struct vx_softc *);
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static void vxgetlink(struct vx_softc *);
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static void vxsetlink(struct vx_softc *);
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/* int vxbusyeeprom(struct vx_softc *); */
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int
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vxattach(sc)
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struct vx_softc *sc;
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{
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struct ifnet *ifp = &sc->arpcom.ac_if;
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int i;
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callout_handle_init(&sc->ch);
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GO_WINDOW(0);
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CSR_WRITE_2(sc, VX_COMMAND, GLOBAL_RESET);
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VX_BUSY_WAIT;
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vxgetlink(sc);
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/*
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* Read the station address from the eeprom
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*/
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GO_WINDOW(0);
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for (i = 0; i < 3; i++) {
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int x;
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if (vxbusyeeprom(sc))
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return 0;
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CSR_WRITE_2(sc, VX_W0_EEPROM_COMMAND, EEPROM_CMD_RD
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| (EEPROM_OEM_ADDR_0 + i));
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if (vxbusyeeprom(sc))
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return 0;
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x = CSR_READ_2(sc, VX_W0_EEPROM_DATA);
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sc->arpcom.ac_enaddr[(i << 1)] = x >> 8;
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sc->arpcom.ac_enaddr[(i << 1) + 1] = x;
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}
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printf(" address %6D\n", sc->arpcom.ac_enaddr, ":");
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ifp->if_unit = sc->unit;
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ifp->if_name = "vx";
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ifp->if_mtu = ETHERMTU;
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ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
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ifp->if_output = ether_output;
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ifp->if_start = vxstart;
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ifp->if_ioctl = vxioctl;
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ifp->if_init = vxinit;
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ifp->if_watchdog = vxwatchdog;
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ifp->if_softc = sc;
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ether_ifattach(ifp, sc->arpcom.ac_enaddr);
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sc->tx_start_thresh = 20; /* probably a good starting point. */
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vxstop(sc);
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return 1;
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}
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/*
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* The order in here seems important. Otherwise we may not receive
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* interrupts. ?!
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*/
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static void
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vxinit(xsc)
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void *xsc;
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{
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struct vx_softc *sc = (struct vx_softc *) xsc;
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struct ifnet *ifp = &sc->arpcom.ac_if;
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int i;
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VX_BUSY_WAIT;
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GO_WINDOW(2);
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for (i = 0; i < 6; i++) /* Reload the ether_addr. */
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CSR_WRITE_1(sc, VX_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]);
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CSR_WRITE_2(sc, VX_COMMAND, RX_RESET);
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VX_BUSY_WAIT;
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CSR_WRITE_2(sc, VX_COMMAND, TX_RESET);
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VX_BUSY_WAIT;
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GO_WINDOW(1); /* Window 1 is operating window */
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for (i = 0; i < 31; i++)
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CSR_READ_1(sc, VX_W1_TX_STATUS);
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CSR_WRITE_2(sc, VX_COMMAND,SET_RD_0_MASK | S_CARD_FAILURE |
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S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
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CSR_WRITE_2(sc, VX_COMMAND,SET_INTR_MASK | S_CARD_FAILURE |
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S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
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/*
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* Attempt to get rid of any stray interrupts that occured during
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* configuration. On the i386 this isn't possible because one may
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* already be queued. However, a single stray interrupt is
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* unimportant.
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*/
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CSR_WRITE_2(sc, VX_COMMAND, ACK_INTR | 0xff);
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vxsetfilter(sc);
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vxsetlink(sc);
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CSR_WRITE_2(sc, VX_COMMAND, RX_ENABLE);
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CSR_WRITE_2(sc, VX_COMMAND, TX_ENABLE);
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vxmbuffill((caddr_t) sc);
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/* Interface is now `running', with no output active. */
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ifp->if_flags |= IFF_RUNNING;
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ifp->if_flags &= ~IFF_OACTIVE;
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/* Attempt to start output, if any. */
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vxstart(ifp);
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}
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static void
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vxsetfilter(sc)
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struct vx_softc *sc;
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{
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register struct ifnet *ifp = &sc->arpcom.ac_if;
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GO_WINDOW(1); /* Window 1 is operating window */
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CSR_WRITE_2(sc, VX_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | FIL_BRDCST |
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FIL_MULTICAST |
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((ifp->if_flags & IFF_PROMISC) ? FIL_PROMISC : 0 ));
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}
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static void
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vxgetlink(sc)
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struct vx_softc *sc;
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{
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int n, k;
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GO_WINDOW(3);
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sc->vx_connectors = CSR_READ_2(sc, VX_W3_RESET_OPT) & 0x7f;
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for (n = 0, k = 0; k < VX_CONNECTORS; k++) {
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if (sc->vx_connectors & conn_tab[k].bit) {
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if (n > 0) {
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printf("/");
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}
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printf("%s", conn_tab[k].name);
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n++;
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}
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}
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if (sc->vx_connectors == 0) {
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printf("no connectors!");
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return;
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}
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GO_WINDOW(3);
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sc->vx_connector = (CSR_READ_4(sc, VX_W3_INTERNAL_CFG)
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& INTERNAL_CONNECTOR_MASK)
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>> INTERNAL_CONNECTOR_BITS;
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if (sc->vx_connector & 0x10) {
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sc->vx_connector &= 0x0f;
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printf("[*%s*]", conn_tab[(int)sc->vx_connector].name);
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printf(": disable 'auto select' with DOS util!");
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} else {
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printf("[*%s*]", conn_tab[(int)sc->vx_connector].name);
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}
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}
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static void
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vxsetlink(sc)
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struct vx_softc *sc;
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{
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register struct ifnet *ifp = &sc->arpcom.ac_if;
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int i, j, k;
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char *reason, *warning;
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static int prev_flags;
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static char prev_conn = -1;
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if (prev_conn == -1) {
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prev_conn = sc->vx_connector;
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}
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/*
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* S.B.
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*
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* Now behavior was slightly changed:
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*
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* if any of flags link[0-2] is used and its connector is
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* physically present the following connectors are used:
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*
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* link0 - AUI * highest precedence
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* link1 - BNC
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* link2 - UTP * lowest precedence
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*
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* If none of them is specified then
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* connector specified in the EEPROM is used
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* (if present on card or UTP if not).
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*/
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i = sc->vx_connector; /* default in EEPROM */
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reason = "default";
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warning = 0;
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if (ifp->if_flags & IFF_LINK0) {
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if (sc->vx_connectors & conn_tab[CONNECTOR_AUI].bit) {
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i = CONNECTOR_AUI;
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reason = "link0";
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} else {
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warning = "aui not present! (link0)";
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}
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} else if (ifp->if_flags & IFF_LINK1) {
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if (sc->vx_connectors & conn_tab[CONNECTOR_BNC].bit) {
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i = CONNECTOR_BNC;
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reason = "link1";
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} else {
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warning = "bnc not present! (link1)";
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}
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} else if (ifp->if_flags & IFF_LINK2) {
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if (sc->vx_connectors & conn_tab[CONNECTOR_UTP].bit) {
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i = CONNECTOR_UTP;
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reason = "link2";
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} else {
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warning = "utp not present! (link2)";
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}
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} else if ((sc->vx_connectors & conn_tab[(int)sc->vx_connector].bit) == 0) {
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warning = "strange connector type in EEPROM.";
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reason = "forced";
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i = CONNECTOR_UTP;
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}
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/* Avoid unnecessary message. */
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k = (prev_flags ^ ifp->if_flags) & (IFF_LINK0 | IFF_LINK1 | IFF_LINK2);
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if ((k != 0) || (prev_conn != i)) {
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if (warning != 0) {
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printf("vx%d: warning: %s\n", sc->unit, warning);
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}
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printf("vx%d: selected %s. (%s)\n",
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sc->unit, conn_tab[i].name, reason);
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}
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/* Set the selected connector. */
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GO_WINDOW(3);
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j = CSR_READ_4(sc, VX_W3_INTERNAL_CFG) & ~INTERNAL_CONNECTOR_MASK;
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CSR_WRITE_4(sc, VX_W3_INTERNAL_CFG, j | (i <<INTERNAL_CONNECTOR_BITS));
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/* First, disable all. */
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CSR_WRITE_2(sc, VX_COMMAND, STOP_TRANSCEIVER);
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DELAY(800);
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GO_WINDOW(4);
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CSR_WRITE_2(sc, VX_W4_MEDIA_TYPE, 0);
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/* Second, enable the selected one. */
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switch(i) {
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case CONNECTOR_UTP:
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GO_WINDOW(4);
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CSR_WRITE_2(sc, VX_W4_MEDIA_TYPE, ENABLE_UTP);
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break;
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case CONNECTOR_BNC:
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CSR_WRITE_2(sc, VX_COMMAND, START_TRANSCEIVER);
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DELAY(800);
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break;
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case CONNECTOR_TX:
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case CONNECTOR_FX:
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GO_WINDOW(4);
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CSR_WRITE_2(sc, VX_W4_MEDIA_TYPE, LINKBEAT_ENABLE);
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break;
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default: /* AUI and MII fall here */
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break;
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}
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GO_WINDOW(1);
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prev_flags = ifp->if_flags;
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prev_conn = i;
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}
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static void
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vxstart(ifp)
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struct ifnet *ifp;
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{
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register struct vx_softc *sc = ifp->if_softc;
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register struct mbuf *m;
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int sh, len, pad;
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/* Don't transmit if interface is busy or not running */
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if ((sc->arpcom.ac_if.if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
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return;
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startagain:
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/* Sneak a peek at the next packet */
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m = ifp->if_snd.ifq_head;
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if (m == NULL) {
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return;
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}
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/* We need to use m->m_pkthdr.len, so require the header */
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M_ASSERTPKTHDR(m);
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len = m->m_pkthdr.len;
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pad = (4 - len) & 3;
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/*
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* The 3c509 automatically pads short packets to minimum ethernet length,
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* but we drop packets that are too large. Perhaps we should truncate
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* them instead?
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*/
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if (len + pad > ETHER_MAX_LEN) {
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/* packet is obviously too large: toss it */
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++ifp->if_oerrors;
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IF_DEQUEUE(&ifp->if_snd, m);
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m_freem(m);
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goto readcheck;
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}
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VX_BUSY_WAIT;
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if (CSR_READ_2(sc, VX_W1_FREE_TX) < len + pad + 4) {
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CSR_WRITE_2(sc, VX_COMMAND, SET_TX_AVAIL_THRESH | ((len + pad + 4) >> 2));
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/* not enough room in FIFO */
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if (CSR_READ_2(sc, VX_W1_FREE_TX) < len + pad + 4) { /* make sure */
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ifp->if_flags |= IFF_OACTIVE;
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ifp->if_timer = 1;
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return;
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}
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}
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CSR_WRITE_2(sc, VX_COMMAND, SET_TX_AVAIL_THRESH | (8188 >> 2));
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IF_DEQUEUE(&ifp->if_snd, m);
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if (m == NULL) /* not really needed */
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return;
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VX_BUSY_WAIT;
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CSR_WRITE_2(sc, VX_COMMAND, SET_TX_START_THRESH |
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((len / 4 + sc->tx_start_thresh) >> 2));
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BPF_MTAP(&sc->arpcom.ac_if, m);
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|
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/*
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* Do the output at splhigh() so that an interrupt from another device
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* won't cause a FIFO underrun.
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*/
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sh = splhigh();
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|
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CSR_WRITE_4(sc, VX_W1_TX_PIO_WR_1, len | TX_INDICATE);
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while (m) {
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if (m->m_len > 3)
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bus_space_write_multi_4(sc->vx_btag, sc->vx_bhandle,
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VX_W1_TX_PIO_WR_1, (u_int32_t *)mtod(m, caddr_t), m->m_len / 4);
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if (m->m_len & 3)
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bus_space_write_multi_1(sc->vx_btag, sc->vx_bhandle,
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VX_W1_TX_PIO_WR_1,
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mtod(m, caddr_t) + (m->m_len & ~3) , m->m_len & 3);
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m = m_free(m);
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}
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while (pad--)
|
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CSR_WRITE_1(sc, VX_W1_TX_PIO_WR_1, 0); /* Padding */
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|
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splx(sh);
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|
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++ifp->if_opackets;
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ifp->if_timer = 1;
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|
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readcheck:
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if ((CSR_READ_2(sc, VX_W1_RX_STATUS) & ERR_INCOMPLETE) == 0) {
|
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/* We received a complete packet. */
|
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|
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if ((CSR_READ_2(sc, VX_STATUS) & S_INTR_LATCH) == 0) {
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/*
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* No interrupt, read the packet and continue
|
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* Is this supposed to happen? Is my motherboard
|
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* completely busted?
|
|
*/
|
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vxread(sc);
|
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} else
|
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/* Got an interrupt, return so that it gets serviced. */
|
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return;
|
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} else {
|
|
/* Check if we are stuck and reset [see XXX comment] */
|
|
if (vxstatus(sc)) {
|
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if (ifp->if_flags & IFF_DEBUG)
|
|
if_printf(ifp, "adapter reset\n");
|
|
vxreset(sc);
|
|
}
|
|
}
|
|
|
|
goto startagain;
|
|
}
|
|
|
|
/*
|
|
* XXX: The 3c509 card can get in a mode where both the fifo status bit
|
|
* FIFOS_RX_OVERRUN and the status bit ERR_INCOMPLETE are set
|
|
* We detect this situation and we reset the adapter.
|
|
* It happens at times when there is a lot of broadcast traffic
|
|
* on the cable (once in a blue moon).
|
|
*/
|
|
static int
|
|
vxstatus(sc)
|
|
struct vx_softc *sc;
|
|
{
|
|
int fifost;
|
|
|
|
/*
|
|
* Check the FIFO status and act accordingly
|
|
*/
|
|
GO_WINDOW(4);
|
|
fifost = CSR_READ_2(sc, VX_W4_FIFO_DIAG);
|
|
GO_WINDOW(1);
|
|
|
|
if (fifost & FIFOS_RX_UNDERRUN) {
|
|
if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("vx%d: RX underrun\n", sc->unit);
|
|
vxreset(sc);
|
|
return 0;
|
|
}
|
|
|
|
if (fifost & FIFOS_RX_STATUS_OVERRUN) {
|
|
if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("vx%d: RX Status overrun\n", sc->unit);
|
|
return 1;
|
|
}
|
|
|
|
if (fifost & FIFOS_RX_OVERRUN) {
|
|
if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("vx%d: RX overrun\n", sc->unit);
|
|
return 1;
|
|
}
|
|
|
|
if (fifost & FIFOS_TX_OVERRUN) {
|
|
if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("vx%d: TX overrun\n", sc->unit);
|
|
vxreset(sc);
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
vxtxstat(sc)
|
|
struct vx_softc *sc;
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* We need to read+write TX_STATUS until we get a 0 status
|
|
* in order to turn off the interrupt flag.
|
|
*/
|
|
while ((i = CSR_READ_1(sc, VX_W1_TX_STATUS)) & TXS_COMPLETE) {
|
|
CSR_WRITE_1(sc, VX_W1_TX_STATUS, 0x0);
|
|
|
|
if (i & TXS_JABBER) {
|
|
++sc->arpcom.ac_if.if_oerrors;
|
|
if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("vx%d: jabber (%x)\n", sc->unit, i);
|
|
vxreset(sc);
|
|
} else if (i & TXS_UNDERRUN) {
|
|
++sc->arpcom.ac_if.if_oerrors;
|
|
if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("vx%d: fifo underrun (%x) @%d\n",
|
|
sc->unit, i, sc->tx_start_thresh);
|
|
if (sc->tx_succ_ok < 100)
|
|
sc->tx_start_thresh = min(ETHER_MAX_LEN, sc->tx_start_thresh + 20);
|
|
sc->tx_succ_ok = 0;
|
|
vxreset(sc);
|
|
} else if (i & TXS_MAX_COLLISION) {
|
|
++sc->arpcom.ac_if.if_collisions;
|
|
CSR_WRITE_2(sc, VX_COMMAND, TX_ENABLE);
|
|
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
|
|
} else
|
|
sc->tx_succ_ok = (sc->tx_succ_ok+1) & 127;
|
|
}
|
|
}
|
|
|
|
void
|
|
vxintr(voidsc)
|
|
void *voidsc;
|
|
{
|
|
register short status;
|
|
struct vx_softc *sc = voidsc;
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
|
|
for (;;) {
|
|
CSR_WRITE_2(sc, VX_COMMAND, C_INTR_LATCH);
|
|
|
|
status = CSR_READ_2(sc, VX_STATUS);
|
|
|
|
if ((status & (S_TX_COMPLETE | S_TX_AVAIL |
|
|
S_RX_COMPLETE | S_CARD_FAILURE)) == 0)
|
|
break;
|
|
|
|
/*
|
|
* Acknowledge any interrupts. It's important that we do this
|
|
* first, since there would otherwise be a race condition.
|
|
* Due to the i386 interrupt queueing, we may get spurious
|
|
* interrupts occasionally.
|
|
*/
|
|
CSR_WRITE_2(sc, VX_COMMAND, ACK_INTR | status);
|
|
|
|
if (status & S_RX_COMPLETE)
|
|
vxread(sc);
|
|
if (status & S_TX_AVAIL) {
|
|
ifp->if_timer = 0;
|
|
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
|
|
vxstart(&sc->arpcom.ac_if);
|
|
}
|
|
if (status & S_CARD_FAILURE) {
|
|
printf("vx%d: adapter failure (%x)\n", sc->unit, status);
|
|
ifp->if_timer = 0;
|
|
vxreset(sc);
|
|
return;
|
|
}
|
|
if (status & S_TX_COMPLETE) {
|
|
ifp->if_timer = 0;
|
|
vxtxstat(sc);
|
|
vxstart(ifp);
|
|
}
|
|
}
|
|
|
|
/* no more interrupts */
|
|
return;
|
|
}
|
|
|
|
static void
|
|
vxread(sc)
|
|
struct vx_softc *sc;
|
|
{
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
struct mbuf *m;
|
|
struct ether_header *eh;
|
|
u_int len;
|
|
|
|
len = CSR_READ_2(sc, VX_W1_RX_STATUS);
|
|
|
|
again:
|
|
|
|
if (ifp->if_flags & IFF_DEBUG) {
|
|
int err = len & ERR_MASK;
|
|
char *s = NULL;
|
|
|
|
if (len & ERR_INCOMPLETE)
|
|
s = "incomplete packet";
|
|
else if (err == ERR_OVERRUN)
|
|
s = "packet overrun";
|
|
else if (err == ERR_RUNT)
|
|
s = "runt packet";
|
|
else if (err == ERR_ALIGNMENT)
|
|
s = "bad alignment";
|
|
else if (err == ERR_CRC)
|
|
s = "bad crc";
|
|
else if (err == ERR_OVERSIZE)
|
|
s = "oversized packet";
|
|
else if (err == ERR_DRIBBLE)
|
|
s = "dribble bits";
|
|
|
|
if (s)
|
|
printf("vx%d: %s\n", sc->unit, s);
|
|
}
|
|
|
|
if (len & ERR_INCOMPLETE)
|
|
return;
|
|
|
|
if (len & ERR_RX) {
|
|
++ifp->if_ierrors;
|
|
goto abort;
|
|
}
|
|
|
|
len &= RX_BYTES_MASK; /* Lower 11 bits = RX bytes. */
|
|
|
|
/* Pull packet off interface. */
|
|
m = vxget(sc, len);
|
|
if (m == 0) {
|
|
ifp->if_ierrors++;
|
|
goto abort;
|
|
}
|
|
|
|
++ifp->if_ipackets;
|
|
|
|
{
|
|
struct mbuf *m0;
|
|
|
|
m0 = m_devget(mtod(m, char *), m->m_pkthdr.len, ETHER_ALIGN, ifp, NULL);
|
|
if (m0 == NULL) {
|
|
ifp->if_ierrors++;
|
|
goto abort;
|
|
}
|
|
|
|
m_freem(m);
|
|
m = m0;
|
|
}
|
|
|
|
/* We assume the header fit entirely in one mbuf. */
|
|
eh = mtod(m, struct ether_header *);
|
|
|
|
/*
|
|
* XXX: Some cards seem to be in promiscous mode all the time.
|
|
* we need to make sure we only get our own stuff always.
|
|
* bleah!
|
|
*/
|
|
|
|
if ((eh->ether_dhost[0] & 1) == 0 /* !mcast and !bcast */
|
|
&& bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN) != 0) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
(*ifp->if_input)(ifp, m);
|
|
|
|
/*
|
|
* In periods of high traffic we can actually receive enough
|
|
* packets so that the fifo overrun bit will be set at this point,
|
|
* even though we just read a packet. In this case we
|
|
* are not going to receive any more interrupts. We check for
|
|
* this condition and read again until the fifo is not full.
|
|
* We could simplify this test by not using vxstatus(), but
|
|
* rechecking the RX_STATUS register directly. This test could
|
|
* result in unnecessary looping in cases where there is a new
|
|
* packet but the fifo is not full, but it will not fix the
|
|
* stuck behavior.
|
|
*
|
|
* Even with this improvement, we still get packet overrun errors
|
|
* which are hurting performance. Maybe when I get some more time
|
|
* I'll modify vxread() so that it can handle RX_EARLY interrupts.
|
|
*/
|
|
if (vxstatus(sc)) {
|
|
len = CSR_READ_2(sc, VX_W1_RX_STATUS);
|
|
/* Check if we are stuck and reset [see XXX comment] */
|
|
if (len & ERR_INCOMPLETE) {
|
|
if (ifp->if_flags & IFF_DEBUG)
|
|
printf("vx%d: adapter reset\n", sc->unit);
|
|
vxreset(sc);
|
|
return;
|
|
}
|
|
goto again;
|
|
}
|
|
|
|
return;
|
|
|
|
abort:
|
|
CSR_WRITE_2(sc, VX_COMMAND, RX_DISCARD_TOP_PACK);
|
|
}
|
|
|
|
static struct mbuf *
|
|
vxget(sc, totlen)
|
|
struct vx_softc *sc;
|
|
u_int totlen;
|
|
{
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
struct mbuf *top, **mp, *m;
|
|
int len;
|
|
int sh;
|
|
|
|
m = sc->mb[sc->next_mb];
|
|
sc->mb[sc->next_mb] = 0;
|
|
if (m == 0) {
|
|
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
|
if (m == 0)
|
|
return 0;
|
|
} else {
|
|
/* If the queue is no longer full, refill. */
|
|
if (sc->last_mb == sc->next_mb && sc->buffill_pending == 0) {
|
|
sc->ch = timeout(vxmbuffill, sc, 1);
|
|
sc->buffill_pending = 1;
|
|
}
|
|
/* Convert one of our saved mbuf's. */
|
|
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
|
|
m->m_data = m->m_pktdat;
|
|
m->m_flags = M_PKTHDR;
|
|
bzero(&m->m_pkthdr, sizeof(m->m_pkthdr));
|
|
}
|
|
m->m_pkthdr.rcvif = ifp;
|
|
m->m_pkthdr.len = totlen;
|
|
len = MHLEN;
|
|
top = 0;
|
|
mp = ⊤
|
|
|
|
/*
|
|
* We read the packet at splhigh() so that an interrupt from another
|
|
* device doesn't cause the card's buffer to overflow while we're
|
|
* reading it. We may still lose packets at other times.
|
|
*/
|
|
sh = splhigh();
|
|
|
|
/*
|
|
* Since we don't set allowLargePackets bit in MacControl register,
|
|
* we can assume that totlen <= 1500bytes.
|
|
* The while loop will be performed iff we have a packet with
|
|
* MLEN < m_len < MINCLSIZE.
|
|
*/
|
|
while (totlen > 0) {
|
|
if (top) {
|
|
m = sc->mb[sc->next_mb];
|
|
sc->mb[sc->next_mb] = 0;
|
|
if (m == 0) {
|
|
MGET(m, M_DONTWAIT, MT_DATA);
|
|
if (m == 0) {
|
|
splx(sh);
|
|
m_freem(top);
|
|
return 0;
|
|
}
|
|
} else {
|
|
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
|
|
}
|
|
len = MLEN;
|
|
}
|
|
if (totlen >= MINCLSIZE) {
|
|
MCLGET(m, M_DONTWAIT);
|
|
if (m->m_flags & M_EXT)
|
|
len = MCLBYTES;
|
|
}
|
|
len = min(totlen, len);
|
|
if (len > 3)
|
|
bus_space_read_multi_4(sc->vx_btag, sc->vx_bhandle,
|
|
VX_W1_RX_PIO_RD_1, mtod(m, u_int32_t *), len / 4);
|
|
if (len & 3) {
|
|
bus_space_read_multi_1(sc->vx_btag, sc->vx_bhandle,
|
|
VX_W1_RX_PIO_RD_1, mtod(m, u_int8_t *) + (len & ~3),
|
|
len & 3);
|
|
}
|
|
m->m_len = len;
|
|
totlen -= len;
|
|
*mp = m;
|
|
mp = &m->m_next;
|
|
}
|
|
|
|
CSR_WRITE_2(sc, VX_COMMAND, RX_DISCARD_TOP_PACK);
|
|
|
|
splx(sh);
|
|
|
|
return top;
|
|
}
|
|
|
|
|
|
static int
|
|
vxioctl(ifp, cmd, data)
|
|
register struct ifnet *ifp;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
{
|
|
struct vx_softc *sc = ifp->if_softc;
|
|
struct ifreq *ifr = (struct ifreq *) data;
|
|
int s, error = 0;
|
|
|
|
s = splimp();
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFFLAGS:
|
|
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.
|
|
*/
|
|
vxstop(sc);
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
} 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.
|
|
*/
|
|
vxinit(sc);
|
|
} else {
|
|
/*
|
|
* deal with flags changes:
|
|
* IFF_MULTICAST, IFF_PROMISC,
|
|
* IFF_LINK0, IFF_LINK1,
|
|
*/
|
|
vxsetfilter(sc);
|
|
vxsetlink(sc);
|
|
}
|
|
break;
|
|
|
|
case SIOCSIFMTU:
|
|
/*
|
|
* Set the interface MTU.
|
|
*/
|
|
if (ifr->ifr_mtu > ETHERMTU) {
|
|
error = EINVAL;
|
|
} else {
|
|
ifp->if_mtu = ifr->ifr_mtu;
|
|
}
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
/*
|
|
* Multicast list has changed; set the hardware filter
|
|
* accordingly.
|
|
*/
|
|
vxreset(sc);
|
|
error = 0;
|
|
break;
|
|
|
|
|
|
default:
|
|
error = ether_ioctl(ifp, cmd, data);
|
|
break;
|
|
}
|
|
|
|
splx(s);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
vxreset(sc)
|
|
struct vx_softc *sc;
|
|
{
|
|
int s;
|
|
s = splimp();
|
|
|
|
vxstop(sc);
|
|
vxinit(sc);
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
vxwatchdog(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct vx_softc *sc = ifp->if_softc;
|
|
|
|
if (ifp->if_flags & IFF_DEBUG)
|
|
if_printf(ifp, "device timeout\n");
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
vxstart(ifp);
|
|
vxintr(sc);
|
|
}
|
|
|
|
void
|
|
vxstop(sc)
|
|
struct vx_softc *sc;
|
|
{
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
|
|
ifp->if_timer = 0;
|
|
|
|
CSR_WRITE_2(sc, VX_COMMAND, RX_DISABLE);
|
|
CSR_WRITE_2(sc, VX_COMMAND, RX_DISCARD_TOP_PACK);
|
|
VX_BUSY_WAIT;
|
|
CSR_WRITE_2(sc, VX_COMMAND, TX_DISABLE);
|
|
CSR_WRITE_2(sc, VX_COMMAND, STOP_TRANSCEIVER);
|
|
DELAY(800);
|
|
CSR_WRITE_2(sc, VX_COMMAND, RX_RESET);
|
|
VX_BUSY_WAIT;
|
|
CSR_WRITE_2(sc, VX_COMMAND, TX_RESET);
|
|
VX_BUSY_WAIT;
|
|
CSR_WRITE_2(sc, VX_COMMAND, C_INTR_LATCH);
|
|
CSR_WRITE_2(sc, VX_COMMAND, SET_RD_0_MASK);
|
|
CSR_WRITE_2(sc, VX_COMMAND, SET_INTR_MASK);
|
|
CSR_WRITE_2(sc, VX_COMMAND, SET_RX_FILTER);
|
|
|
|
vxmbufempty(sc);
|
|
}
|
|
|
|
int
|
|
vxbusyeeprom(sc)
|
|
struct vx_softc *sc;
|
|
{
|
|
int j, i = 100;
|
|
|
|
while (i--) {
|
|
j = CSR_READ_2(sc, VX_W0_EEPROM_COMMAND);
|
|
if (j & EEPROM_BUSY)
|
|
DELAY(100);
|
|
else
|
|
break;
|
|
}
|
|
if (!i) {
|
|
printf("vx%d: eeprom failed to come ready\n", sc->unit);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
vxmbuffill(sp)
|
|
void *sp;
|
|
{
|
|
struct vx_softc *sc = (struct vx_softc *) sp;
|
|
int s, i;
|
|
|
|
s = splimp();
|
|
i = sc->last_mb;
|
|
do {
|
|
if (sc->mb[i] == NULL)
|
|
MGET(sc->mb[i], M_DONTWAIT, MT_DATA);
|
|
if (sc->mb[i] == NULL)
|
|
break;
|
|
i = (i + 1) % MAX_MBS;
|
|
} while (i != sc->next_mb);
|
|
sc->last_mb = i;
|
|
/* If the queue was not filled, try again. */
|
|
if (sc->last_mb != sc->next_mb) {
|
|
sc->ch = timeout(vxmbuffill, sc, 1);
|
|
sc->buffill_pending = 1;
|
|
} else {
|
|
sc->buffill_pending = 0;
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
vxmbufempty(sc)
|
|
struct vx_softc *sc;
|
|
{
|
|
int s, i;
|
|
|
|
s = splimp();
|
|
for (i = 0; i < MAX_MBS; i++) {
|
|
if (sc->mb[i]) {
|
|
m_freem(sc->mb[i]);
|
|
sc->mb[i] = NULL;
|
|
}
|
|
}
|
|
sc->last_mb = sc->next_mb = 0;
|
|
if (sc->buffill_pending != 0)
|
|
untimeout(vxmbuffill, sc, sc->ch);
|
|
splx(s);
|
|
}
|