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https://github.com/freebsd/freebsd-src
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6ea3e9d839
#includes to get prototypes. pci now uses a different interrupt handler type for interrupts that it dispatches and the isa interrupt handler type for the interrupts that it handles.
1142 lines
28 KiB
C
1142 lines
28 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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* 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 "vx.h"
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#if NVX > 0
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#include "bpfilter.h"
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#include <sys/param.h>
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#if defined(__FreeBSD__)
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/devconf.h>
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#endif
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/syslog.h>
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#if defined(__NetBSD__)
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#include <sys/select.h>
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#endif
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#include <netinet/if_ether.h>
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#endif
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#ifdef NS
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#if NBPFILTER > 0
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#include <net/bpf.h>
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#include <net/bpfdesc.h>
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#endif
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#if defined(__FreeBSD__)
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#include <machine/clock.h>
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#endif
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#include <pci/pcivar.h>
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#include <pci/if_vxreg.h>
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static int eeprom_rdy __P((int unit));
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static int get_e __P((int unit, int offset));
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static int vxioctl __P((struct ifnet * ifp, int, caddr_t));
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static void vxmbuffill __P((caddr_t, int));
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static void vxmbufempty __P((struct vx_softc *));
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static void vxinit __P((int));
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static void vxintr __P((int));
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static void vxread __P((struct vx_softc *));
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static void vxreset __P((int));
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static void vxstart __P((struct ifnet *));
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static void vxstop __P((int));
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static void vxwatchdog __P((struct ifnet *));
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static struct vx_softc vx_softc[NVX];
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#define vx_ftst(f) (sc->stat&(f))
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#define vx_fset(f) (sc->stat|=(f))
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#define vx_frst(f) (sc->stat&=~(f))
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static int
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eeprom_rdy(unit)
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int unit;
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{
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struct vx_softc *sc = &vx_softc[unit];
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int i;
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for (i = 0; is_eeprom_busy(BASE) && i < MAX_EEPROMBUSY; i++);
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if (i >= MAX_EEPROMBUSY) {
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printf("vx%d: eeprom failed to come ready.\n", unit);
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return (0);
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}
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return (1);
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}
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/*
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* get_e: gets a 16 bits word from the EEPROM. we must have set the window
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* before
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*/
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static int
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get_e(unit, offset)
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int unit;
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int offset;
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{
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struct vx_softc *sc = &vx_softc[unit];
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if (!eeprom_rdy(unit))
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return (0xffff);
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outw(BASE + VX_W0_EEPROM_COMMAND, EEPROM_CMD_RD | offset);
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if (!eeprom_rdy(unit))
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return (0xffff);
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return (inw(BASE + VX_W0_EEPROM_DATA));
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}
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static int
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vx_pci_shutdown(
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struct kern_devconf * const kdc,
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int force)
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{
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vxreset(kdc->kdc_unit);
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dev_detach(kdc);
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return 0;
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}
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static char*
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vx_pci_probe(
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pcici_t config_id,
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pcidi_t device_id)
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{
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if(device_id == 0x590010b7ul)
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return "3Com 3c590 EtherLink III PCI";
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return NULL;
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}
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static char *vx_conn_type[] = {"UTP", "AUI", "???", "BNC"};
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static void
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vx_pci_attach(
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pcici_t config_id,
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int unit)
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{
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struct vx_softc *sc;
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struct ifnet *ifp;
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u_short i, j, *p;
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struct ifaddr *ifa;
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struct sockaddr_dl *sdl;
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if (unit >= NVX) {
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printf("vx%d: not configured; kernel is built for only %d device%s.\n",
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unit, NVX, NVX == 1 ? "" : "s");
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return;
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}
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sc = &vx_softc[unit];
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ifp = &sc->arpcom.ac_if;
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sc->vx_io_addr = pci_conf_read(config_id, 0x10) & 0xfffffff0;
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outw(VX_COMMAND, GLOBAL_RESET);
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DELAY(1000);
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sc->vx_connectors = 0;
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i = pci_conf_read(config_id, 0x48);
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j = inw(BASE + VX_W3_INTERNAL_CFG) >> INTERNAL_CONNECTOR_BITS;
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if (i & RS_AUI) {
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printf("aui");
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sc->vx_connectors |= AUI;
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}
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if (i & RS_BNC) {
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if (sc->vx_connectors)
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printf("/");
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printf("bnc");
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sc->vx_connectors |= BNC;
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}
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if (i & RS_UTP) {
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if (sc->vx_connectors)
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printf("/");
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printf("utp");
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sc->vx_connectors |= UTP;
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}
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if (!(sc->vx_connectors & 7))
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printf("no connectors!");
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else
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printf("[*%s*]", vx_conn_type[j]);
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/*
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* Read the station address from the eeprom
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*/
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p = (u_short *) & sc->arpcom.ac_enaddr;
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for (i = 0; i < 3; i++) {
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GO_WINDOW(0);
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p[i] = htons(get_e(unit, i));
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GO_WINDOW(2);
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outw(BASE + VX_W2_ADDR_0 + (i * 2), ntohs(p[i]));
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}
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printf(" address %s\n", ether_sprintf(sc->arpcom.ac_enaddr));
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/*
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* Check for receive overrun anomaly in the first revision of the
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* adapters.
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*/
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if(!(get_e(unit, EEPROM_SOFT_INFO_2) & NO_RX_OVN_ANOMALY)) {
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printf("Warning! Defective early revision adapter!\n");
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}
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ifp->if_unit = unit;
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ifp->if_name = "vx";
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ifp->if_mtu = ETHERMTU;
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX /*| IFF_NOTRAILERS*/;
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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_watchdog = vxwatchdog;
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if_attach(ifp);
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/*
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* Fill the hardware address into ifa_addr if we find an AF_LINK entry.
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* We need to do this so bpf's can get the hardware addr of this card.
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* netstat likes this too!
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*/
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ifa = ifp->if_addrlist;
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while ((ifa != 0) && (ifa->ifa_addr != 0) &&
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(ifa->ifa_addr->sa_family != AF_LINK))
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ifa = ifa->ifa_next;
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if ((ifa != 0) && (ifa->ifa_addr != 0)) {
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sdl = (struct sockaddr_dl *) ifa->ifa_addr;
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sdl->sdl_type = IFT_ETHER;
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sdl->sdl_alen = ETHER_ADDR_LEN;
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sdl->sdl_slen = 0;
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bcopy(sc->arpcom.ac_enaddr, LLADDR(sdl), ETHER_ADDR_LEN);
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}
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/* we give some initial parameters */
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sc->rx_avg_pkt = 128;
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/*
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* NOTE: In all this I multiply everything by 64.
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* W_s = the speed the CPU is able to write to the TX FIFO.
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* T_s = the speed the board sends the info to the Ether.
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* W_s/T_s = 16 (represents 16/64) => W_s = 25 % of T_s.
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* This will give us for a packet of 1500 bytes
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* tx_start_thresh=1125 and for a pkt of 64 bytes tx_start_threshold=48.
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* We prefer to start thinking the CPU is much slower than the Ethernet
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* transmission.
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*/
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sc->tx_rate = TX_INIT_RATE;
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sc->tx_counter = 0;
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sc->rx_latency = RX_INIT_LATENCY;
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sc->rx_early_thresh = RX_INIT_EARLY_THRESH;
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#ifdef VX_LOCAL_STATS
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sc->rx_no_first = sc->rx_no_mbuf =
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sc->rx_bpf_disc = sc->rx_overrunf = sc->rx_overrunl =
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sc->tx_underrun = 0;
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#endif
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vx_fset(F_RX_FIRST);
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sc->top = sc->mcur = 0;
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#if NBPFILTER > 0
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bpfattach(&sc->bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
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#endif
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pci_map_int(config_id, (void *) vxintr, (void *) unit, &net_imask);
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}
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static u_long vx_pci_count;
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static struct pci_device vxdevice = {
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"vx",
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vx_pci_probe,
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vx_pci_attach,
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&vx_pci_count,
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vx_pci_shutdown,
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};
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DATA_SET (pcidevice_set, vxdevice);
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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(unit)
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int unit;
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{
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register struct vx_softc *sc = &vx_softc[unit];
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register struct ifnet *ifp = &sc->arpcom.ac_if;
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int s, i, j;
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/*
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if (ifp->if_addrlist == (struct ifaddr *) 0)
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return;
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*/
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s = splimp();
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while (inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS);
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GO_WINDOW(0);
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outw(BASE + VX_COMMAND, STOP_TRANSCEIVER);
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GO_WINDOW(4);
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outw(BASE + VX_W4_MEDIA_TYPE, DISABLE_UTP);
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GO_WINDOW(2);
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/* Reload the ether_addr. */
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for (i = 0; i < 6; i++)
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outb(BASE + VX_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]);
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outw(BASE + VX_COMMAND, RX_RESET);
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outw(BASE + VX_COMMAND, TX_RESET);
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/* Window 1 is operating window */
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GO_WINDOW(1);
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for (i = 0; i < 31; i++)
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inb(BASE + VX_W1_TX_STATUS);
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/* get rid of stray intr's */
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outw(BASE + VX_COMMAND, ACK_INTR | 0xff);
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outw(BASE + VX_COMMAND, SET_RD_0_MASK | S_5_INTS);
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outw(BASE + VX_COMMAND, SET_INTR_MASK | S_5_INTS);
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if(ifp->if_flags & IFF_PROMISC)
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outw(BASE + VX_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
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FIL_GROUP | FIL_BRDCST | FIL_ALL);
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else
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outw(BASE + VX_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
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FIL_GROUP | FIL_BRDCST);
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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 AUI if not).
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*
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*/
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if(ifp->if_flags & IFF_LINK0 && sc->vx_connectors & AUI) {
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/* nothing */
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} else if(ifp->if_flags & IFF_LINK1 && sc->vx_connectors & BNC) {
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outw(BASE + VX_COMMAND, START_TRANSCEIVER);
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DELAY(1000);
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} else if(ifp->if_flags & IFF_LINK2 && sc->vx_connectors & UTP) {
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GO_WINDOW(4);
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outw(BASE + VX_W4_MEDIA_TYPE, ENABLE_UTP);
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GO_WINDOW(1);
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} else {
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GO_WINDOW(0);
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j = inw(BASE + VX_W3_INTERNAL_CFG) >> INTERNAL_CONNECTOR_BITS;
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GO_WINDOW(1);
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switch(j) {
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case ACF_CONNECTOR_UTP:
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if(sc->vx_connectors & UTP) {
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GO_WINDOW(4);
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outw(BASE + VX_W4_MEDIA_TYPE, ENABLE_UTP);
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GO_WINDOW(1);
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}
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break;
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case ACF_CONNECTOR_BNC:
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if(sc->vx_connectors & BNC) {
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outw(BASE + VX_COMMAND, START_TRANSCEIVER);
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DELAY(1000);
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}
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break;
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case ACF_CONNECTOR_AUI:
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/* nothing to do */
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break;
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default:
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printf("vx%d: strange connector type in EEPROM: assuming AUI\n",
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unit);
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break;
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}
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}
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outw(BASE + VX_COMMAND, RX_ENABLE);
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outw(BASE + VX_COMMAND, TX_ENABLE);
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ifp->if_flags |= IFF_RUNNING;
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ifp->if_flags &= ~IFF_OACTIVE; /* just in case */
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sc->tx_rate = TX_INIT_RATE;
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sc->tx_counter = 0;
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sc->rx_latency = RX_INIT_LATENCY;
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sc->rx_early_thresh = RX_INIT_EARLY_THRESH;
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#ifdef VX_LOCAL_STATS
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sc->rx_no_first = sc->rx_no_mbuf =
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sc->rx_bpf_disc = sc->rx_overrunf = sc->rx_overrunl =
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sc->tx_underrun = 0;
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#endif
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vx_fset(F_RX_FIRST);
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vx_frst(F_RX_TRAILER);
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if (sc->top) {
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m_freem(sc->top);
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sc->top = sc->mcur = 0;
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}
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outw(BASE + VX_COMMAND, SET_RX_EARLY_THRESH | sc->rx_early_thresh);
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/*
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* These clever computations look very interesting
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* but the fixed threshold gives near no output errors
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* and if it as low as 16 bytes it gives the max. throughput.
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* We think that processor is anyway quicker than Ethernet
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* (and this should be true for any 386 and higher)
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*/
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outw(BASE + VX_COMMAND, SET_TX_START_THRESH | 16);
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/*
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* Store up a bunch of mbuf's for use later. (MAX_MBS). First we free up
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* any that we had in case we're being called from intr or somewhere
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* else.
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*/
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sc->last_mb = 0;
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sc->next_mb = 0;
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vxmbuffill((caddr_t) sc, 0);
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vxstart(ifp);
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splx(s);
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}
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static const char padmap[] = {0, 3, 2, 1};
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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 = &vx_softc[ifp->if_unit];
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register u_int len;
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register struct mbuf *m;
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struct mbuf *top;
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int s, pad;
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s = splimp();
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if (sc->arpcom.ac_if.if_flags & IFF_OACTIVE) {
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splx(s);
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return;
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}
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startagain:
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/* Sneak a peek at the next packet */
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m = sc->arpcom.ac_if.if_snd.ifq_head;
|
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if (m == 0) {
|
|
splx(s);
|
|
return;
|
|
}
|
|
#if 0
|
|
len = m->m_pkthdr.len;
|
|
#else
|
|
for (len = 0, top = m; m; m = m->m_next)
|
|
len += m->m_len;
|
|
#endif
|
|
|
|
pad = padmap[len & 3];
|
|
|
|
/*
|
|
* The 3c509 automatically pads short packets to minimum ethernet length,
|
|
* but we drop packets that are too large. Perhaps we should truncate
|
|
* them instead?
|
|
*/
|
|
if (len + pad > ETHER_MAX_LEN) {
|
|
/* packet is obviously too large: toss it */
|
|
++sc->arpcom.ac_if.if_oerrors;
|
|
IF_DEQUEUE(&sc->arpcom.ac_if.if_snd, m);
|
|
m_freem(m);
|
|
goto readcheck;
|
|
}
|
|
if (inw(BASE + VX_W1_FREE_TX) < len + pad + 4) {
|
|
/* no room in FIFO */
|
|
outw(BASE + VX_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4));
|
|
sc->arpcom.ac_if.if_flags |= IFF_OACTIVE;
|
|
splx(s);
|
|
return;
|
|
}
|
|
IF_DEQUEUE(&sc->arpcom.ac_if.if_snd, m);
|
|
|
|
outw(BASE + VX_W1_TX_PIO_WR_1, len);
|
|
outw(BASE + VX_W1_TX_PIO_WR_1, 0x0); /* Second dword meaningless */
|
|
|
|
/* compute the Tx start threshold for this packet */
|
|
sc->tx_start_thresh = len =
|
|
(((len * (64 - sc->tx_rate)) >> 6) & ~3) + 16;
|
|
#if 0
|
|
/*
|
|
* The following string does something strange with the card and
|
|
* we get a lot of output errors due to it so it's commented out
|
|
* and we use fixed threshold (see above)
|
|
*/
|
|
|
|
outw(BASE + VX_COMMAND, SET_TX_START_THRESH | len);
|
|
#endif
|
|
|
|
for (top = m; m != 0; m = m->m_next)
|
|
if(vx_ftst(F_ACCESS_32_BITS)) {
|
|
outsl(BASE + VX_W1_TX_PIO_WR_1, mtod(m, caddr_t),
|
|
m->m_len / 4);
|
|
if (m->m_len & 3)
|
|
outsb(BASE + VX_W1_TX_PIO_WR_1,
|
|
mtod(m, caddr_t) + m->m_len / 4,
|
|
m->m_len & 3);
|
|
} else {
|
|
outsw(BASE + VX_W1_TX_PIO_WR_1, mtod(m, caddr_t), m->m_len / 2);
|
|
if (m->m_len & 1)
|
|
outb(BASE + VX_W1_TX_PIO_WR_1,
|
|
*(mtod(m, caddr_t) + m->m_len - 1));
|
|
}
|
|
|
|
while (pad--)
|
|
outb(BASE + VX_W1_TX_PIO_WR_1, 0); /* Padding */
|
|
|
|
#if NBPFILTER > 0
|
|
if (sc->bpf) {
|
|
bpf_mtap(sc->bpf, top);
|
|
}
|
|
#endif
|
|
|
|
sc->arpcom.ac_if.if_opackets++;
|
|
m_freem(top);
|
|
/*
|
|
* Every 1024*4 packets we increment the tx_rate if we haven't had
|
|
* errors, that in the case it has abnormaly goten too low
|
|
*/
|
|
if (!(++sc->tx_counter & (1024 * 4 - 1)) &&
|
|
sc->tx_rate < TX_INIT_MAX_RATE)
|
|
sc->tx_rate++;
|
|
|
|
/*
|
|
* Is another packet coming in? We don't want to overflow the tiny RX
|
|
* fifo.
|
|
*/
|
|
readcheck:
|
|
if (inw(BASE + VX_W1_RX_STATUS) & RX_BYTES_MASK) {
|
|
/*
|
|
* we check if we have packets left, in that case we prepare to come
|
|
* back later
|
|
*/
|
|
if (sc->arpcom.ac_if.if_snd.ifq_head) {
|
|
outw(BASE + VX_COMMAND, SET_TX_AVAIL_THRESH |
|
|
sc->tx_start_thresh);
|
|
}
|
|
splx(s);
|
|
return;
|
|
}
|
|
goto startagain;
|
|
}
|
|
|
|
static void
|
|
vxintr(unit)
|
|
int unit;
|
|
{
|
|
register int status;
|
|
register struct vx_softc *sc = &vx_softc[unit];
|
|
int x;
|
|
|
|
x=splbio();
|
|
|
|
outw(BASE + VX_COMMAND, SET_INTR_MASK); /* disable all Ints */
|
|
|
|
rescan:
|
|
|
|
while ((status = inw(BASE + VX_STATUS)) & S_5_INTS) {
|
|
|
|
/* first acknowledge all interrupt sources */
|
|
outw(BASE + VX_COMMAND, ACK_INTR | (status & S_MASK));
|
|
|
|
if (status & (S_RX_COMPLETE | S_RX_EARLY)) {
|
|
vxread(sc);
|
|
continue;
|
|
}
|
|
if (status & S_TX_AVAIL) {
|
|
/* we need ACK */
|
|
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
|
|
GO_WINDOW(1);
|
|
inw(BASE + VX_W1_FREE_TX);
|
|
vxstart(&sc->arpcom.ac_if);
|
|
}
|
|
if (status & S_CARD_FAILURE) {
|
|
#ifdef VX_LOCAL_STATS
|
|
printf("\nvx%d:\n\tStatus: %x\n", unit, status);
|
|
GO_WINDOW(4);
|
|
printf("\tFIFO Diagnostic: %x\n", inw(BASE + VX_W4_FIFO_DIAG));
|
|
printf("\tStat: %x\n", sc->stat);
|
|
printf("\tIpackets=%d, Opackets=%d\n",
|
|
sc->arpcom.ac_if.if_ipackets, sc->arpcom.ac_if.if_opackets);
|
|
printf("\tNOF=%d, NOMB=%d, BPFD=%d, RXOF=%d, RXOL=%d, TXU=%d\n",
|
|
sc->rx_no_first, sc->rx_no_mbuf, sc->rx_bpf_disc, sc->rx_overrunf,
|
|
sc->rx_overrunl, sc->tx_underrun);
|
|
#else
|
|
printf("vx%d: Status: %x\n", unit, status);
|
|
#endif
|
|
vxinit(unit);
|
|
splx(x);
|
|
return;
|
|
}
|
|
if (status & S_TX_COMPLETE) {
|
|
/* we need ACK. we do it at the end */
|
|
/*
|
|
* We need to read TX_STATUS until we get a 0 status in order to
|
|
* turn off the interrupt flag.
|
|
*/
|
|
while ((status = inb(BASE + VX_W1_TX_STATUS)) & TXS_COMPLETE) {
|
|
if (status & TXS_SUCCES_INTR_REQ);
|
|
else if (status & (TXS_UNDERRUN | TXS_JABBER | TXS_MAX_COLLISION)) {
|
|
outw(BASE + VX_COMMAND, TX_RESET);
|
|
if (status & TXS_UNDERRUN) {
|
|
if (sc->tx_rate > 1) {
|
|
sc->tx_rate--; /* Actually in steps of 1/64 */
|
|
sc->tx_counter = 0; /* We reset it */
|
|
}
|
|
#ifdef VX_LOCAL_STATS
|
|
sc->tx_underrun++;
|
|
#endif
|
|
} else {
|
|
if (status & TXS_JABBER);
|
|
else /* TXS_MAX_COLLISION - we shouldn't get here */
|
|
++sc->arpcom.ac_if.if_collisions;
|
|
}
|
|
++sc->arpcom.ac_if.if_oerrors;
|
|
outw(BASE + VX_COMMAND, TX_ENABLE);
|
|
/*
|
|
* To have a tx_avail_int but giving the chance to the
|
|
* Reception
|
|
*/
|
|
if (sc->arpcom.ac_if.if_snd.ifq_head) {
|
|
outw(BASE + VX_COMMAND, SET_TX_AVAIL_THRESH | 8);
|
|
}
|
|
}
|
|
outb(BASE + VX_W1_TX_STATUS, 0x0); /* pops up the next
|
|
* status */
|
|
} /* while */
|
|
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
|
|
GO_WINDOW(1);
|
|
inw(BASE + VX_W1_FREE_TX);
|
|
vxstart(&sc->arpcom.ac_if);
|
|
} /* end TX_COMPLETE */
|
|
}
|
|
|
|
outw(BASE + VX_COMMAND, C_INTR_LATCH); /* ACK int Latch */
|
|
|
|
if ((status = inw(BASE + VX_STATUS)) & S_5_INTS)
|
|
goto rescan;
|
|
|
|
/* re-enable Ints */
|
|
outw(BASE + VX_COMMAND, SET_INTR_MASK | S_5_INTS);
|
|
|
|
splx(x);
|
|
}
|
|
|
|
static void
|
|
vxread(sc)
|
|
register struct vx_softc *sc;
|
|
{
|
|
struct ether_header *eh;
|
|
struct mbuf *top, *mcur, *m;
|
|
int lenthisone;
|
|
|
|
short rx_fifo2, status;
|
|
register short delta;
|
|
register short rx_fifo;
|
|
|
|
status = inw(BASE + VX_W1_RX_STATUS);
|
|
|
|
read_again:
|
|
|
|
if (status & ERR_RX) {
|
|
++sc->arpcom.ac_if.if_ierrors;
|
|
if (status & ERR_RX_OVERRUN) {
|
|
/*
|
|
* we can think the rx latency is actually greather than we
|
|
* expect
|
|
*/
|
|
#ifdef VX_LOCAL_STATS
|
|
if (vx_ftst(F_RX_FIRST))
|
|
sc->rx_overrunf++;
|
|
else
|
|
sc->rx_overrunl++;
|
|
#endif
|
|
if (sc->rx_latency < ETHERMTU)
|
|
sc->rx_latency += 16;
|
|
}
|
|
goto out;
|
|
}
|
|
rx_fifo = rx_fifo2 = status & RX_BYTES_MASK;
|
|
|
|
if (vx_ftst(F_RX_FIRST)) {
|
|
if (m = sc->mb[sc->next_mb]) {
|
|
sc->mb[sc->next_mb] = 0;
|
|
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
|
|
m->m_data = m->m_pktdat;
|
|
m->m_flags = M_PKTHDR;
|
|
} else {
|
|
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
|
if (!m)
|
|
goto out;
|
|
}
|
|
sc->top = sc->mcur = top = m;
|
|
#define EROUND ((sizeof(struct ether_header) + 3) & ~3)
|
|
#define EOFF (EROUND - sizeof(struct ether_header))
|
|
top->m_data += EOFF;
|
|
|
|
/* Read what should be the header. */
|
|
insw(BASE + VX_W1_RX_PIO_RD_1,
|
|
mtod(top, caddr_t), sizeof(struct ether_header) / 2);
|
|
top->m_len = sizeof(struct ether_header);
|
|
rx_fifo -= sizeof(struct ether_header);
|
|
sc->cur_len = rx_fifo2;
|
|
} else {
|
|
/* come here if we didn't have a complete packet last time */
|
|
top = sc->top;
|
|
m = sc->mcur;
|
|
sc->cur_len += rx_fifo2;
|
|
if (vx_ftst(F_RX_TRAILER))
|
|
/* We don't read the trailer */
|
|
rx_fifo -= sizeof(struct ether_header);
|
|
}
|
|
|
|
/* Reads what is left in the RX FIFO */
|
|
while (rx_fifo > 0) {
|
|
lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
|
|
if (lenthisone == 0) { /* no room in this one */
|
|
mcur = m;
|
|
if (m = sc->mb[sc->next_mb]) {
|
|
sc->mb[sc->next_mb] = 0;
|
|
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
|
|
} else {
|
|
MGET(m, M_DONTWAIT, MT_DATA);
|
|
if (!m)
|
|
goto out;
|
|
}
|
|
|
|
if (rx_fifo >= MINCLSIZE)
|
|
MCLGET(m, M_DONTWAIT);
|
|
m->m_len = 0;
|
|
mcur->m_next = m;
|
|
lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
|
|
}
|
|
if (vx_ftst(F_ACCESS_32_BITS)) { /* default for EISA configured cards*/
|
|
insl(BASE + VX_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len,
|
|
lenthisone / 4);
|
|
m->m_len += (lenthisone & ~3);
|
|
if (lenthisone & 3)
|
|
insb(BASE + VX_W1_RX_PIO_RD_1,
|
|
mtod(m, caddr_t) + m->m_len,
|
|
lenthisone & 3);
|
|
m->m_len += (lenthisone & 3);
|
|
} else {
|
|
insw(BASE + VX_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len,
|
|
lenthisone / 2);
|
|
m->m_len += lenthisone;
|
|
if (lenthisone & 1)
|
|
*(mtod(m, caddr_t) + m->m_len - 1) = inb(BASE + VX_W1_RX_PIO_RD_1);
|
|
}
|
|
rx_fifo -= lenthisone;
|
|
}
|
|
|
|
if (vx_ftst(F_RX_TRAILER)) {/* reads the trailer */
|
|
if (m = sc->mb[sc->next_mb]) {
|
|
sc->mb[sc->next_mb] = 0;
|
|
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
|
|
m->m_data = m->m_pktdat;
|
|
m->m_flags = M_PKTHDR;
|
|
} else {
|
|
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
|
if (!m)
|
|
goto out;
|
|
}
|
|
insw(BASE + VX_W1_RX_PIO_RD_1, mtod(m, caddr_t),
|
|
sizeof(struct ether_header));
|
|
m->m_len = sizeof(struct ether_header);
|
|
m->m_next = top;
|
|
sc->top = top = m;
|
|
/* XXX Accomodate for type and len from beginning of trailer */
|
|
sc->cur_len -= (2 * sizeof(u_short));
|
|
vx_frst(F_RX_TRAILER);
|
|
goto all_pkt;
|
|
}
|
|
|
|
if (status & ERR_RX_INCOMPLETE) { /* we haven't received the complete
|
|
* packet */
|
|
sc->mcur = m;
|
|
#ifdef VX_LOCAL_STATS
|
|
sc->rx_no_first++; /* to know how often we come here */
|
|
#endif
|
|
/*
|
|
* Re-compute rx_latency, the factor used is 1/4 to go up and 1/32 to
|
|
* go down
|
|
*/
|
|
delta = rx_fifo2 - sc->rx_early_thresh; /* last latency seen LLS */
|
|
delta -= sc->rx_latency;/* LLS - estimated_latency */
|
|
if (delta >= 0)
|
|
sc->rx_latency += (delta / 4);
|
|
else
|
|
sc->rx_latency += (delta / 32);
|
|
vx_frst(F_RX_FIRST);
|
|
if (!((status = inw(BASE + VX_W1_RX_STATUS)) & ERR_RX_INCOMPLETE)) {
|
|
/* we see if by now, the packet has completly arrived */
|
|
goto read_again;
|
|
}
|
|
/* compute rx_early_threshold */
|
|
delta = (sc->rx_avg_pkt - sc->cur_len - sc->rx_latency - 16) & ~3;
|
|
if (delta < MIN_RX_EARLY_THRESHL)
|
|
delta = MIN_RX_EARLY_THRESHL;
|
|
|
|
outw(BASE + VX_COMMAND, SET_RX_EARLY_THRESH |
|
|
(sc->rx_early_thresh = delta));
|
|
return;
|
|
}
|
|
all_pkt:
|
|
outw(BASE + VX_COMMAND, RX_DISCARD_TOP_PACK);
|
|
/*
|
|
* recompute average packet's length, the factor used is 1/8 to go down
|
|
* and 1/32 to go up
|
|
*/
|
|
delta = sc->cur_len - sc->rx_avg_pkt;
|
|
if (delta > 0)
|
|
sc->rx_avg_pkt += (delta / 32);
|
|
else
|
|
sc->rx_avg_pkt += (delta / 8);
|
|
delta = (sc->rx_avg_pkt - sc->rx_latency - 16) & ~3;
|
|
if (delta < MIN_RX_EARLY_THRESHF)
|
|
delta = MIN_RX_EARLY_THRESHF;
|
|
sc->rx_early_thresh = delta;
|
|
++sc->arpcom.ac_if.if_ipackets;
|
|
vx_fset(F_RX_FIRST);
|
|
vx_frst(F_RX_TRAILER);
|
|
top->m_pkthdr.rcvif = &sc->arpcom.ac_if;
|
|
top->m_pkthdr.len = sc->cur_len;
|
|
|
|
#if NBPFILTER > 0
|
|
if (sc->bpf) {
|
|
bpf_mtap(sc->bpf, top);
|
|
|
|
/*
|
|
* Note that the interface cannot be in promiscuous mode if there are
|
|
* no BPF listeners. And if we are in promiscuous mode, we have to
|
|
* check if this packet is really ours.
|
|
*/
|
|
eh = mtod(top, struct ether_header *);
|
|
if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) &&
|
|
(eh->ether_dhost[0] & 1) == 0 &&
|
|
bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr,
|
|
sizeof(eh->ether_dhost)) != 0 &&
|
|
bcmp(eh->ether_dhost, etherbroadcastaddr,
|
|
sizeof(eh->ether_dhost)) != 0) {
|
|
if (sc->top) {
|
|
m_freem(sc->top);
|
|
sc->top = 0;
|
|
}
|
|
vx_fset(F_RX_FIRST);
|
|
vx_frst(F_RX_TRAILER);
|
|
#ifdef VX_LOCAL_STATS
|
|
sc->rx_bpf_disc++;
|
|
#endif
|
|
while (inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS);
|
|
outw(BASE + VX_COMMAND, SET_RX_EARLY_THRESH | delta);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
eh = mtod(top, struct ether_header *);
|
|
m_adj(top, sizeof(struct ether_header));
|
|
ether_input(&sc->arpcom.ac_if, eh, top);
|
|
if (!sc->mb[sc->next_mb])
|
|
vxmbuffill((caddr_t) sc, 0);
|
|
sc->top = 0;
|
|
while (inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS);
|
|
outw(BASE + VX_COMMAND, SET_RX_EARLY_THRESH | delta);
|
|
return;
|
|
|
|
out:
|
|
outw(BASE + VX_COMMAND, RX_DISCARD_TOP_PACK);
|
|
if (sc->top) {
|
|
m_freem(sc->top);
|
|
sc->top = 0;
|
|
#ifdef VX_LOCAL_STATS
|
|
sc->rx_no_mbuf++;
|
|
#endif
|
|
}
|
|
delta = (sc->rx_avg_pkt - sc->rx_latency - 16) & ~3;
|
|
if (delta < MIN_RX_EARLY_THRESHF)
|
|
delta = MIN_RX_EARLY_THRESHF;
|
|
vx_fset(F_RX_FIRST);
|
|
vx_frst(F_RX_TRAILER);
|
|
while (inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS);
|
|
outw(BASE + VX_COMMAND, SET_RX_EARLY_THRESH |
|
|
(sc->rx_early_thresh = delta));
|
|
}
|
|
|
|
/*
|
|
* Look familiar?
|
|
*/
|
|
static int
|
|
vxioctl(ifp, cmd, data)
|
|
register struct ifnet *ifp;
|
|
int cmd;
|
|
caddr_t data;
|
|
{
|
|
register struct ifaddr *ifa = (struct ifaddr *) data;
|
|
struct vx_softc *sc = &vx_softc[ifp->if_unit];
|
|
struct ifreq *ifr = (struct ifreq *) data;
|
|
int s, error = 0;
|
|
|
|
s = splimp();
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFADDR:
|
|
ifp->if_flags |= IFF_UP;
|
|
switch (ifa->ifa_addr->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
vxinit(ifp->if_unit); /* before arpwhohas */
|
|
arp_ifinit((struct arpcom *)ifp, ifa);
|
|
break;
|
|
#endif
|
|
#ifdef NS
|
|
case AF_NS:
|
|
{
|
|
register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
|
|
|
|
if (ns_nullhost(*ina))
|
|
ina->x_host =
|
|
*(union ns_host *) (sc->arpcom.ac_enaddr);
|
|
else {
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
bcopy((caddr_t) ina->x_host.c_host,
|
|
(caddr_t) sc->arpcom.ac_enaddr,
|
|
sizeof(sc->arpcom.ac_enaddr));
|
|
}
|
|
vxinit(ifp->if_unit);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
vxinit(ifp->if_unit);
|
|
break;
|
|
}
|
|
break;
|
|
case SIOCGIFADDR:
|
|
{
|
|
struct sockaddr *sa;
|
|
|
|
sa = (struct sockaddr *) & ifr->ifr_data;
|
|
bcopy((caddr_t) sc->arpcom.ac_enaddr,
|
|
(caddr_t) sa->sa_data, ETHER_ADDR_LEN);
|
|
}
|
|
break;
|
|
case SIOCSIFFLAGS:
|
|
if ((ifp->if_flags & IFF_UP) == 0 && ifp->if_flags & IFF_RUNNING) {
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
vxstop(ifp->if_unit);
|
|
vxmbufempty(sc);
|
|
break;
|
|
} else {
|
|
/* reinitialize card on any parameter change */
|
|
vxinit(ifp->if_unit);
|
|
break;
|
|
}
|
|
|
|
/* NOTREACHED */
|
|
|
|
if (ifp->if_flags & IFF_UP && (ifp->if_flags & IFF_RUNNING) == 0)
|
|
vxinit(ifp->if_unit);
|
|
|
|
if ( (ifp->if_flags & IFF_PROMISC) && !vx_ftst(F_PROMISC) ) {
|
|
vx_fset(F_PROMISC);
|
|
vxinit(ifp->if_unit);
|
|
}
|
|
else if( !(ifp->if_flags & IFF_PROMISC) && vx_ftst(F_PROMISC) ) {
|
|
vx_frst(F_PROMISC);
|
|
vxinit(ifp->if_unit);
|
|
}
|
|
|
|
break;
|
|
#ifdef notdef
|
|
case SIOCGHWADDR:
|
|
bcopy((caddr_t) sc->sc_addr, (caddr_t) & ifr->ifr_data,
|
|
sizeof(sc->sc_addr));
|
|
break;
|
|
#endif
|
|
case SIOCSIFMTU:
|
|
|
|
/*
|
|
* Set the interface MTU.
|
|
*/
|
|
if (ifr->ifr_mtu > ETHERMTU) {
|
|
error = EINVAL;
|
|
} else {
|
|
ifp->if_mtu = ifr->ifr_mtu;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
|
|
splx(s);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
vxreset(unit)
|
|
int unit;
|
|
{
|
|
int s = splimp();
|
|
|
|
vxstop(unit);
|
|
vxinit(unit);
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
vxwatchdog(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
/*
|
|
printf("vx: watchdog\n");
|
|
|
|
log(LOG_ERR, "vx%d: watchdog\n", ifp->if_unit);
|
|
ifp->if_oerrors++;
|
|
*/
|
|
|
|
/* vxreset(ifp->if_unit); */
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
vxstart(ifp);
|
|
vxintr(ifp->if_unit);
|
|
}
|
|
|
|
static void
|
|
vxstop(unit)
|
|
int unit;
|
|
{
|
|
struct vx_softc *sc = &vx_softc[unit];
|
|
|
|
outw(BASE + VX_COMMAND, RX_DISABLE);
|
|
outw(BASE + VX_COMMAND, RX_DISCARD_TOP_PACK);
|
|
while (inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS);
|
|
outw(BASE + VX_COMMAND, TX_DISABLE);
|
|
outw(BASE + VX_COMMAND, STOP_TRANSCEIVER);
|
|
outw(BASE + VX_COMMAND, RX_RESET);
|
|
outw(BASE + VX_COMMAND, TX_RESET);
|
|
outw(BASE + VX_COMMAND, C_INTR_LATCH);
|
|
outw(BASE + VX_COMMAND, SET_RD_0_MASK);
|
|
outw(BASE + VX_COMMAND, SET_INTR_MASK);
|
|
outw(BASE + VX_COMMAND, SET_RX_FILTER);
|
|
}
|
|
|
|
/*
|
|
* We suppose this is always called inside a splimp(){...}splx() region
|
|
*/
|
|
static void
|
|
vxmbuffill(sp, dummy_arg)
|
|
caddr_t sp;
|
|
int dummy_arg;
|
|
{
|
|
struct vx_softc *sc = (struct vx_softc *) sp;
|
|
int i;
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
splx(s);
|
|
}
|
|
|
|
#endif /* NVX > 0 */
|