1b6504a175
- implement ioctls compatible with bsdi/freebsd-pao. stat type is changed from u_int to u_quad_t to avoid overflows. now it is possible to switch domain/encryption key from the userland, using cnwctl(8). - implement multicast/promiscuous mode. tested with IPv6.
1043 lines
26 KiB
C
1043 lines
26 KiB
C
/* $NetBSD: if_cnw.c,v 1.3 1999/11/29 12:53:59 itojun Exp $ */
|
||
|
||
/*-
|
||
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
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* All rights reserved.
|
||
*
|
||
* This code is derived from software contributed to The NetBSD Foundation
|
||
* by Michael Eriksson.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
|
||
* are met:
|
||
* 1. Redistributions of source code must retain the above copyright
|
||
* notice, this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* documentation and/or other materials provided with the distribution.
|
||
* 3. All advertising materials mentioning features or use of this software
|
||
* must display the following acknowledgement:
|
||
* This product includes software developed by the NetBSD
|
||
* Foundation, Inc. and its contributors.
|
||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||
* contributors may be used to endorse or promote products derived
|
||
* from this software without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
* POSSIBILITY OF SUCH DAMAGE.
|
||
*/
|
||
|
||
/*
|
||
* Copyright (c) 1996, 1997 Berkeley Software Design, Inc.
|
||
* All rights reserved.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that this notice is retained,
|
||
* the conditions in the following notices are met, and terms applying
|
||
* to contributors in the following notices also apply to Berkeley
|
||
* Software Design, Inc.
|
||
*
|
||
* 1. Redistributions of source code must retain the above copyright
|
||
* notice, this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* documentation and/or other materials provided with the distribution.
|
||
* 3. All advertising materials mentioning features or use of this software
|
||
* must display the following acknowledgement:
|
||
* This product includes software developed by
|
||
* Berkeley Software Design, Inc.
|
||
* 4. Neither the name of the Berkeley Software Design, Inc. nor the names
|
||
* of its contributors may be used to endorse or promote products derived
|
||
* from this software without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND
|
||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
* ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE
|
||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
* SUCH DAMAGE.
|
||
*
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* Paul Borman, December 1996
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*
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* This driver is derived from a generic frame work which is
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* Copyright(c) 1994,1995,1996
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* Yoichi Shinoda, Yoshitaka Tokugawa, WIDE Project, Wildboar Project
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* and Foretune. All rights reserved.
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*
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* A linux driver was used as the "hardware reference manual" (i.e.,
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* to determine registers and a general outline of how the card works)
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* That driver is publically available and copyright
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*
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* John Markus Bj,Ax(Brndalen
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* Department of Computer Science
|
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* University of Troms,Ax(B
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* Norway
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* johnm@staff.cs.uit.no, http://www.cs.uit.no/~johnm/
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*/
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||
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/*
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||
* This is a driver for the Xircom CreditCard Netwave (also known as
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* the Netwave Airsurfer) wireless LAN PCMCIA adapter.
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*
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* When this driver was developed, the Linux Netwave driver was used
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* as a hardware manual. That driver is Copyright (c) 1997 University
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* of Troms<6D>, Norway. It is part of the Linix pcmcia-cs package that
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* can be found at
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* http://hyper.stanford.edu/HyperNews/get/pcmcia/home.html. The most
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* recent version of the pcmcia-cs package when this driver was
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* written was 3.0.6.
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*
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* Unfortunately, a lot of explicit numeric constants were used in the
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* Linux driver. I have tried to use symbolic names whenever possible,
|
||
* but since I don't have any real hardware documentation, there's
|
||
* still one or two "magic numbers" :-(.
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||
*
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||
* Driver limitations: This driver doesn't do multicasting or receiver
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* promiscuity, because of missing hardware documentation. I couldn't
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* get receiver promiscuity to work, and I haven't even tried
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* multicast. Volunteers are welcome, of course :-).
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*/
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#include "opt_inet.h"
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/socket.h>
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#include <sys/mbuf.h>
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#include <sys/ioctl.h>
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#include <sys/proc.h>
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#include <net/if.h>
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#include <dev/pcmcia/if_cnwreg.h>
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#include <dev/pcmcia/if_cnwioctl.h>
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#include <dev/pcmcia/pcmciareg.h>
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#include <dev/pcmcia/pcmciavar.h>
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#include <dev/pcmcia/pcmciadevs.h>
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#include <net/if_dl.h>
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#include <net/if_ether.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_inarp.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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/*
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* Let these be patchable variables, initialized from macros that can
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* be set in the kernel config file. Someone with lots of spare time
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* could probably write a nice Netwave configuration program to do
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* this a little bit more elegantly :-).
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*/
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#ifndef CNW_DOMAIN
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#define CNW_DOMAIN 0x100
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#endif
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int cnw_domain = CNW_DOMAIN; /* Domain */
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#ifndef CNW_SCRAMBLEKEY
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#define CNW_SCRAMBLEKEY 0
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#endif
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int cnw_skey = CNW_SCRAMBLEKEY; /* Scramble key */
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int cnw_match __P((struct device *, struct cfdata *, void *));
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void cnw_attach __P((struct device *, struct device *, void *));
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struct cnw_softc {
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struct device sc_dev; /* Device glue (must be first) */
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struct ethercom sc_ethercom; /* Ethernet common part */
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int sc_domain; /* Netwave domain */
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int sc_skey; /* Netwave scramble key */
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struct cnwstats sc_stats;
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/* PCMCIA-specific stuff */
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struct pcmcia_function *sc_pf; /* PCMCIA function */
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struct pcmcia_io_handle sc_pcioh; /* PCMCIA I/O space handle */
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int sc_iowin; /* ...window */
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bus_space_tag_t sc_iot; /* ...bus_space tag */
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bus_space_handle_t sc_ioh; /* ...bus_space handle */
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struct pcmcia_mem_handle sc_pcmemh; /* PCMCIA memory handle */
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bus_addr_t sc_memoff; /* ...offset */
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int sc_memwin; /* ...window */
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bus_space_tag_t sc_memt; /* ...bus_space tag */
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bus_space_handle_t sc_memh; /* ...bus_space handle */
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void *sc_ih; /* Interrupt cookie */
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};
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struct cfattach cnw_ca = {
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sizeof(struct cnw_softc), cnw_match, cnw_attach
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};
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void cnw_reset __P((struct cnw_softc *));
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void cnw_init __P((struct cnw_softc *));
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int cnw_enable __P((struct cnw_softc *sc));
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void cnw_disable __P((struct cnw_softc *sc));
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void cnw_config __P((struct cnw_softc *sc, u_int8_t *));
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void cnw_start __P((struct ifnet *));
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void cnw_transmit __P((struct cnw_softc *, struct mbuf *));
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struct mbuf *cnw_read __P((struct cnw_softc *));
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void cnw_recv __P((struct cnw_softc *));
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int cnw_intr __P((void *arg));
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int cnw_ioctl __P((struct ifnet *, u_long, caddr_t));
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void cnw_watchdog __P((struct ifnet *));
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static int cnw_setdomain __P((struct cnw_softc *, int));
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static int cnw_setkey __P((struct cnw_softc *, int));
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/* ---------------------------------------------------------------- */
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/* Help routines */
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static int wait_WOC __P((struct cnw_softc *, int));
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static int read16 __P((struct cnw_softc *, int));
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static int cnw_cmd __P((struct cnw_softc *, int, int, int, int));
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/*
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* Wait until the WOC (Write Operation Complete) bit in the
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* ASR (Adapter Status Register) is asserted.
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*/
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static int
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wait_WOC(sc, line)
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struct cnw_softc *sc;
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int line;
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{
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int i, asr;
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for (i = 0; i < 5000; i++) {
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asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR);
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if (asr & CNW_ASR_WOC)
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return (0);
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DELAY(100);
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}
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if (line > 0)
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printf("%s: wedged at line %d\n", sc->sc_dev.dv_xname, line);
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return (1);
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}
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#define WAIT_WOC(sc) wait_WOC(sc, __LINE__)
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/*
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* Read a 16 bit value from the card.
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*/
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static int
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read16(sc, offset)
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struct cnw_softc *sc;
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int offset;
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{
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int hi, lo;
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int offs = sc->sc_memoff + offset;
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/* This could presumably be done more efficient with
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* bus_space_read_2(), but I don't know anything about the
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* byte sex guarantees... Besides, this is pretty cheap as
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* well :-)
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*/
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lo = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs);
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hi = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs + 1);
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return ((hi << 8) | lo);
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}
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/*
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* Send a command to the card by writing it to the command buffer.
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*/
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int
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cnw_cmd(sc, cmd, count, arg1, arg2)
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struct cnw_softc *sc;
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int cmd, count, arg1, arg2;
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{
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int ptr = sc->sc_memoff + CNW_EREG_CB;
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if (wait_WOC(sc, 0)) {
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printf("%s: wedged when issuing cmd 0x%x\n",
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sc->sc_dev.dv_xname, cmd);
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/*
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* We'll continue anyway, as that's probably the best
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* thing we can do; at least the user knows there's a
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* problem, and can reset the interface with ifconfig
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* down/up.
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*/
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}
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bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr, cmd);
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if (count > 0) {
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bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + 1, arg1);
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if (count > 1)
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bus_space_write_1(sc->sc_memt, sc->sc_memh,
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ptr + 2, arg2);
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}
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bus_space_write_1(sc->sc_memt, sc->sc_memh,
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ptr + count + 1, CNW_CMD_EOC);
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return (0);
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}
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#define CNW_CMD0(sc, cmd) \
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do { cnw_cmd(sc, cmd, 0, 0, 0); } while (0)
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#define CNW_CMD1(sc, cmd, arg1) \
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do { cnw_cmd(sc, cmd, 1, arg1 , 0); } while (0)
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#define CNW_CMD2(sc, cmd, arg1, arg2) \
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do { cnw_cmd(sc, cmd, 2, arg1, arg2); } while (0)
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/* ---------------------------------------------------------------- */
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/*
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* Reset the hardware.
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*/
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void
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cnw_reset(sc)
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struct cnw_softc *sc;
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{
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#ifdef CNW_DEBUG
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if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG)
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printf("%s: resetting\n", sc->sc_dev.dv_xname);
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#endif
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wait_WOC(sc, 0);
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, CNW_PMR_RESET);
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bus_space_write_1(sc->sc_memt, sc->sc_memh,
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sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_WOC);
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, 0);
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}
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||
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/*
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* Initialize the card.
|
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*/
|
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void
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cnw_init(sc)
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struct cnw_softc *sc;
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{
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struct ifnet *ifp = &sc->sc_ethercom.ec_if;
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const u_int8_t rxmode =
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CNW_RXCONF_RXENA | CNW_RXCONF_BCAST | CNW_RXCONF_AMP;
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||
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/* Reset the card */
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cnw_reset(sc);
|
||
|
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/* Issue a NOP to check the card */
|
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CNW_CMD0(sc, CNW_CMD_NOP);
|
||
|
||
/* Set up receive configuration */
|
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CNW_CMD1(sc, CNW_CMD_SRC,
|
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rxmode | ((ifp->if_flags & IFF_PROMISC) ? CNW_RXCONF_PRO : 0));
|
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/* Set up transmit configuration */
|
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CNW_CMD1(sc, CNW_CMD_STC, CNW_TXCONF_TXENA);
|
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|
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/* Set domain */
|
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CNW_CMD2(sc, CNW_CMD_SMD, sc->sc_domain, sc->sc_domain >> 8);
|
||
|
||
/* Set scramble key */
|
||
CNW_CMD2(sc, CNW_CMD_SSK, sc->sc_skey, sc->sc_skey >> 8);
|
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|
||
/* Enable interrupts */
|
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WAIT_WOC(sc);
|
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bus_space_write_1(sc->sc_iot, sc->sc_ioh,
|
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CNW_REG_IMR, CNW_IMR_IENA | CNW_IMR_RFU1);
|
||
|
||
/* Enable receiver */
|
||
CNW_CMD0(sc, CNW_CMD_ER);
|
||
|
||
/* "Set the IENA bit in COR" */
|
||
WAIT_WOC(sc);
|
||
bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_COR,
|
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CNW_COR_IENA | CNW_COR_LVLREQ);
|
||
}
|
||
|
||
|
||
/*
|
||
* Enable and initialize the card.
|
||
*/
|
||
int
|
||
cnw_enable(sc)
|
||
struct cnw_softc *sc;
|
||
{
|
||
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
|
||
|
||
sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, cnw_intr, sc);
|
||
if (sc->sc_ih == NULL) {
|
||
printf("%s: couldn't establish interrupt handler\n",
|
||
sc->sc_dev.dv_xname);
|
||
return (EIO);
|
||
}
|
||
if (pcmcia_function_enable(sc->sc_pf) != 0) {
|
||
printf("%s: couldn't enable card\n", sc->sc_dev.dv_xname);
|
||
return (EIO);
|
||
}
|
||
cnw_init(sc);
|
||
ifp->if_flags |= IFF_RUNNING;
|
||
return (0);
|
||
}
|
||
|
||
|
||
/*
|
||
* Stop and disable the card.
|
||
*/
|
||
void
|
||
cnw_disable(sc)
|
||
struct cnw_softc *sc;
|
||
{
|
||
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
|
||
|
||
pcmcia_function_disable(sc->sc_pf);
|
||
pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
|
||
ifp->if_flags &= ~IFF_RUNNING;
|
||
ifp->if_timer = 0;
|
||
}
|
||
|
||
|
||
/*
|
||
* Match the hardware we handle.
|
||
*/
|
||
int
|
||
cnw_match(parent, match, aux)
|
||
struct device *parent;
|
||
struct cfdata *match;
|
||
void *aux;
|
||
{
|
||
struct pcmcia_attach_args *pa = aux;
|
||
|
||
if (pa->manufacturer == PCMCIA_VENDOR_TDK &&
|
||
pa->product == PCMCIA_PRODUCT_TDK_XIR_CNW_801)
|
||
return 1;
|
||
if (pa->manufacturer == PCMCIA_VENDOR_TDK &&
|
||
pa->product == PCMCIA_PRODUCT_TDK_XIR_CNW_802)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
/*
|
||
* Attach the card.
|
||
*/
|
||
void
|
||
cnw_attach(parent, self, aux)
|
||
struct device *parent, *self;
|
||
void *aux;
|
||
{
|
||
struct cnw_softc *sc = (void *) self;
|
||
struct pcmcia_attach_args *pa = aux;
|
||
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
|
||
u_int8_t macaddr[ETHER_ADDR_LEN];
|
||
int i;
|
||
|
||
/* Enable the card */
|
||
sc->sc_pf = pa->pf;
|
||
pcmcia_function_init(sc->sc_pf, sc->sc_pf->cfe_head.sqh_first);
|
||
if (pcmcia_function_enable(sc->sc_pf)) {
|
||
printf(": function enable failed\n");
|
||
return;
|
||
}
|
||
|
||
/* Map I/O register and "memory" */
|
||
if (pcmcia_io_alloc(sc->sc_pf, 0, CNW_IO_SIZE, CNW_IO_SIZE,
|
||
&sc->sc_pcioh) != 0) {
|
||
printf(": can't allocate i/o space\n");
|
||
return;
|
||
}
|
||
if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO16, 0,
|
||
CNW_IO_SIZE, &sc->sc_pcioh, &sc->sc_iowin) != 0) {
|
||
printf(": can't map i/o space\n");
|
||
return;
|
||
}
|
||
sc->sc_iot = sc->sc_pcioh.iot;
|
||
sc->sc_ioh = sc->sc_pcioh.ioh;
|
||
if (pcmcia_mem_alloc(sc->sc_pf, CNW_MEM_SIZE, &sc->sc_pcmemh) != 0) {
|
||
printf(": can't allocate memory\n");
|
||
return;
|
||
}
|
||
if (pcmcia_mem_map(sc->sc_pf, PCMCIA_MEM_COMMON, CNW_MEM_ADDR,
|
||
CNW_MEM_SIZE, &sc->sc_pcmemh, &sc->sc_memoff,
|
||
&sc->sc_memwin) != 0) {
|
||
printf(": can't map memory\n");
|
||
return;
|
||
}
|
||
sc->sc_memt = sc->sc_pcmemh.memt;
|
||
sc->sc_memh = sc->sc_pcmemh.memh;
|
||
switch (pa->product) {
|
||
case PCMCIA_PRODUCT_TDK_XIR_CNW_801:
|
||
printf(": %s\n", PCMCIA_STR_TDK_XIR_CNW_801);
|
||
break;
|
||
case PCMCIA_PRODUCT_TDK_XIR_CNW_802:
|
||
printf(": %s\n", PCMCIA_STR_TDK_XIR_CNW_802);
|
||
break;
|
||
}
|
||
|
||
/* Finish setup of softc */
|
||
sc->sc_domain = cnw_domain;
|
||
sc->sc_skey = cnw_skey;
|
||
|
||
/* Get MAC address */
|
||
cnw_reset(sc);
|
||
for (i = 0; i < ETHER_ADDR_LEN; i++)
|
||
macaddr[i] = bus_space_read_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_PA + i);
|
||
printf("%s: address %s\n", sc->sc_dev.dv_xname,
|
||
ether_sprintf(macaddr));
|
||
|
||
/* Set up ifnet structure */
|
||
bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
|
||
ifp->if_softc = sc;
|
||
ifp->if_start = cnw_start;
|
||
ifp->if_ioctl = cnw_ioctl;
|
||
ifp->if_watchdog = cnw_watchdog;
|
||
ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX |
|
||
IFF_NOTRAILERS;
|
||
|
||
/* Attach the interface */
|
||
if_attach(ifp);
|
||
ether_ifattach(ifp, macaddr);
|
||
#if NBPFILTER > 0
|
||
bpfattach(&sc->sc_ethercom.ec_if.if_bpf, ifp, DLT_EN10MB,
|
||
sizeof(struct ether_header));
|
||
#endif
|
||
|
||
ifp->if_baudrate = 1 * 1024 * 1024;
|
||
|
||
/* Disable the card now, and turn it on when the interface goes up */
|
||
pcmcia_function_disable(sc->sc_pf);
|
||
}
|
||
|
||
/*
|
||
* Start outputting on the interface.
|
||
*/
|
||
void
|
||
cnw_start(ifp)
|
||
struct ifnet *ifp;
|
||
{
|
||
struct cnw_softc *sc = ifp->if_softc;
|
||
struct mbuf *m0;
|
||
int asr;
|
||
|
||
#ifdef CNW_DEBUG
|
||
if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG)
|
||
printf("%s: cnw_start\n", ifp->if_xname);
|
||
#endif
|
||
|
||
for (;;) {
|
||
/* Is there any buffer space available on the card? */
|
||
WAIT_WOC(sc);
|
||
asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR);
|
||
if (!(asr & CNW_ASR_TXBA)) {
|
||
#ifdef CNW_DEBUG
|
||
if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG)
|
||
printf("%s: no buffer space\n", ifp->if_xname);
|
||
#endif
|
||
return;
|
||
}
|
||
|
||
sc->sc_stats.nws_tx++;
|
||
|
||
IF_DEQUEUE(&ifp->if_snd, m0);
|
||
if (m0 == 0)
|
||
return;
|
||
|
||
#if NBPFILTER > 0
|
||
if (ifp->if_bpf)
|
||
bpf_mtap(ifp->if_bpf, m0);
|
||
#endif
|
||
|
||
cnw_transmit(sc, m0);
|
||
++ifp->if_opackets;
|
||
ifp->if_timer = 3; /* start watchdog timer */
|
||
}
|
||
}
|
||
|
||
|
||
/*
|
||
* Transmit a packet.
|
||
*/
|
||
void
|
||
cnw_transmit(sc, m0)
|
||
struct cnw_softc *sc;
|
||
struct mbuf *m0;
|
||
{
|
||
int buffer, bufsize, bufoffset, bufptr, bufspace, len, mbytes, n;
|
||
struct mbuf *m;
|
||
u_int8_t *mptr;
|
||
|
||
/* Get buffer info from card */
|
||
buffer = read16(sc, CNW_EREG_TDP);
|
||
bufsize = read16(sc, CNW_EREG_TDP + 2);
|
||
bufoffset = read16(sc, CNW_EREG_TDP + 4);
|
||
#ifdef CNW_DEBUG
|
||
if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG)
|
||
printf("%s: cnw_transmit b=0x%x s=%d o=0x%x\n",
|
||
sc->sc_dev.dv_xname, buffer, bufsize, bufoffset);
|
||
#endif
|
||
|
||
/* Copy data from mbuf chain to card buffers */
|
||
bufptr = sc->sc_memoff + buffer + bufoffset;
|
||
bufspace = bufsize;
|
||
len = 0;
|
||
for (m = m0; m; ) {
|
||
mptr = mtod(m, u_int8_t *);
|
||
mbytes = m->m_len;
|
||
len += mbytes;
|
||
while (mbytes > 0) {
|
||
if (bufspace == 0) {
|
||
buffer = read16(sc, buffer);
|
||
bufptr = sc->sc_memoff + buffer + bufoffset;
|
||
bufspace = bufsize;
|
||
#ifdef CNW_DEBUG
|
||
if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG)
|
||
printf("%s: next buffer @0x%x\n",
|
||
sc->sc_dev.dv_xname, buffer);
|
||
#endif
|
||
}
|
||
n = mbytes <= bufspace ? mbytes : bufspace;
|
||
bus_space_write_region_1(sc->sc_memt, sc->sc_memh,
|
||
bufptr, mptr, n);
|
||
bufptr += n;
|
||
bufspace -= n;
|
||
mptr += n;
|
||
mbytes -= n;
|
||
}
|
||
MFREE(m, m0);
|
||
m = m0;
|
||
}
|
||
|
||
/* Issue transmit command */
|
||
CNW_CMD2(sc, CNW_CMD_TL, len, len >> 8);
|
||
}
|
||
|
||
|
||
/*
|
||
* Pull a packet from the card into an mbuf chain.
|
||
*/
|
||
struct mbuf *
|
||
cnw_read(sc)
|
||
struct cnw_softc *sc;
|
||
{
|
||
struct mbuf *m, *top, **mp;
|
||
int totbytes, buffer, bufbytes, bufptr, mbytes, n;
|
||
u_int8_t *mptr;
|
||
|
||
WAIT_WOC(sc);
|
||
totbytes = read16(sc, CNW_EREG_RDP);
|
||
#ifdef CNW_DEBUG
|
||
if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG)
|
||
printf("%s: recv %d bytes\n", sc->sc_dev.dv_xname, totbytes);
|
||
#endif
|
||
buffer = CNW_EREG_RDP + 2;
|
||
bufbytes = 0;
|
||
bufptr = 0; /* XXX make gcc happy */
|
||
|
||
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
||
if (m == 0)
|
||
return (0);
|
||
m->m_pkthdr.rcvif = &sc->sc_ethercom.ec_if;
|
||
m->m_pkthdr.len = totbytes;
|
||
mbytes = MHLEN;
|
||
top = 0;
|
||
mp = ⊤
|
||
|
||
while (totbytes > 0) {
|
||
if (top) {
|
||
MGET(m, M_DONTWAIT, MT_DATA);
|
||
if (m == 0) {
|
||
m_freem(top);
|
||
return (0);
|
||
}
|
||
mbytes = MLEN;
|
||
}
|
||
if (totbytes >= MINCLSIZE) {
|
||
MCLGET(m, M_DONTWAIT);
|
||
if ((m->m_flags & M_EXT) == 0) {
|
||
m_free(m);
|
||
m_freem(top);
|
||
return (0);
|
||
}
|
||
mbytes = MCLBYTES;
|
||
}
|
||
if (!top) {
|
||
int pad = ALIGN(sizeof(struct ether_header)) -
|
||
sizeof(struct ether_header);
|
||
m->m_data += pad;
|
||
mbytes -= pad;
|
||
}
|
||
mptr = mtod(m, u_int8_t *);
|
||
mbytes = m->m_len = min(totbytes, mbytes);
|
||
totbytes -= mbytes;
|
||
while (mbytes > 0) {
|
||
if (bufbytes == 0) {
|
||
buffer = read16(sc, buffer);
|
||
bufbytes = read16(sc, buffer + 2);
|
||
bufptr = sc->sc_memoff + buffer +
|
||
read16(sc, buffer + 4);
|
||
#ifdef CNW_DEBUG
|
||
if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG)
|
||
printf("%s: %d bytes @0x%x+0x%x\n",
|
||
sc->sc_dev.dv_xname, bufbytes,
|
||
buffer, bufptr - buffer -
|
||
sc->sc_memoff);
|
||
#endif
|
||
}
|
||
n = mbytes <= bufbytes ? mbytes : bufbytes;
|
||
bus_space_read_region_1(sc->sc_memt, sc->sc_memh,
|
||
bufptr, mptr, n);
|
||
bufbytes -= n;
|
||
bufptr += n;
|
||
mbytes -= n;
|
||
mptr += n;
|
||
}
|
||
*mp = m;
|
||
mp = &m->m_next;
|
||
}
|
||
|
||
return (top);
|
||
}
|
||
|
||
|
||
/*
|
||
* Handle received packets.
|
||
*/
|
||
void
|
||
cnw_recv(sc)
|
||
struct cnw_softc *sc;
|
||
{
|
||
int rser;
|
||
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
|
||
struct mbuf *m;
|
||
struct ether_header *eh;
|
||
|
||
for (;;) {
|
||
WAIT_WOC(sc);
|
||
rser = bus_space_read_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_RSER);
|
||
if (!(rser & CNW_RSER_RXAVAIL))
|
||
return;
|
||
|
||
/* Pull packet off card */
|
||
m = cnw_read(sc);
|
||
|
||
/* Acknowledge packet */
|
||
CNW_CMD0(sc, CNW_CMD_SRP);
|
||
|
||
/* Did we manage to get the packet from the interface? */
|
||
if (m == 0) {
|
||
++ifp->if_ierrors;
|
||
return;
|
||
}
|
||
++ifp->if_ipackets;
|
||
|
||
#if NBPFILTER > 0
|
||
if (ifp->if_bpf)
|
||
bpf_mtap(ifp->if_bpf, m);
|
||
#endif
|
||
|
||
/*
|
||
* Check that the packet is for us or {multi,broad}cast. Maybe
|
||
* there's a fool-poof hardware check for this, but I don't
|
||
* really know...
|
||
*/
|
||
eh = mtod(m, struct ether_header *);
|
||
if ((eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
|
||
bcmp(LLADDR(sc->sc_ethercom.ec_if.if_sadl),
|
||
eh->ether_dhost, sizeof(eh->ether_dhost)) != 0) {
|
||
m_freem(m);
|
||
continue;
|
||
}
|
||
|
||
/* Pass the packet up. */
|
||
(*ifp->if_input)(ifp, m);
|
||
}
|
||
}
|
||
|
||
|
||
/*
|
||
* Interrupt handler.
|
||
*/
|
||
int
|
||
cnw_intr(arg)
|
||
void *arg;
|
||
{
|
||
struct cnw_softc *sc = arg;
|
||
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
|
||
int ret, status, rser, tser;
|
||
|
||
if (!(sc->sc_ethercom.ec_if.if_flags & IFF_RUNNING))
|
||
return (0);
|
||
ifp->if_timer = 0; /* stop watchdog timer */
|
||
|
||
ret = 0;
|
||
for (;;) {
|
||
WAIT_WOC(sc);
|
||
if (!(bus_space_read_1(sc->sc_iot, sc->sc_ioh,
|
||
CNW_REG_CCSR) & 0x02)) {
|
||
if (ret == 0)
|
||
printf("%s: spurious interrupt\n",
|
||
sc->sc_dev.dv_xname);
|
||
return (ret);
|
||
}
|
||
ret = 1;
|
||
status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR);
|
||
|
||
/* Anything to receive? */
|
||
if (status & CNW_ASR_RXRDY) {
|
||
sc->sc_stats.nws_rx++;
|
||
cnw_recv(sc);
|
||
}
|
||
|
||
/* Receive error */
|
||
if (status & CNW_ASR_RXERR) {
|
||
/*
|
||
* I get a *lot* of spurious receive errors
|
||
* (many per second), even when the interface
|
||
* is quiescent, so we don't increment
|
||
* if_ierrors here.
|
||
*/
|
||
rser = bus_space_read_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_RSER);
|
||
|
||
/* RX statistics */
|
||
sc->sc_stats.nws_rxerr++;
|
||
if (rser & CNW_RSER_RXBIG)
|
||
sc->sc_stats.nws_rxframe++;
|
||
if (rser & CNW_RSER_RXCRC)
|
||
sc->sc_stats.nws_rxcrcerror++;
|
||
if (rser & CNW_RSER_RXOVERRUN)
|
||
sc->sc_stats.nws_rxoverrun++;
|
||
if (rser & CNW_RSER_RXOVERFLOW)
|
||
sc->sc_stats.nws_rxoverflow++;
|
||
if (rser & CNW_RSER_RXERR)
|
||
sc->sc_stats.nws_rxerrors++;
|
||
if (rser & CNW_RSER_RXAVAIL)
|
||
sc->sc_stats.nws_rxavail++;
|
||
|
||
/* Clear error bits in RSER */
|
||
WAIT_WOC(sc);
|
||
bus_space_write_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_RSERW,
|
||
CNW_RSER_RXERR |
|
||
(rser & (CNW_RSER_RXCRC | CNW_RSER_RXBIG)));
|
||
/* Clear RXERR in ASR */
|
||
WAIT_WOC(sc);
|
||
bus_space_write_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_RXERR);
|
||
}
|
||
|
||
/* Transmit done */
|
||
if (status & CNW_ASR_TXDN) {
|
||
tser = bus_space_read_1(sc->sc_memt, sc->sc_memh,
|
||
CNW_EREG_TSER);
|
||
|
||
/* TX statistics */
|
||
if (tser & CNW_TSER_TXERR)
|
||
sc->sc_stats.nws_txerrors++;
|
||
if (tser & CNW_TSER_TXNOAP)
|
||
sc->sc_stats.nws_txlostcd++;
|
||
if (tser & CNW_TSER_TXGU)
|
||
sc->sc_stats.nws_txabort++;
|
||
|
||
if (tser & CNW_TSER_TXOK) {
|
||
sc->sc_stats.nws_txokay++;
|
||
sc->sc_stats.nws_txretries[status & 0xf]++;
|
||
WAIT_WOC(sc);
|
||
bus_space_write_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_TSERW,
|
||
CNW_TSER_TXOK | CNW_TSER_RTRY);
|
||
}
|
||
|
||
if (tser & CNW_TSER_ERROR) {
|
||
++ifp->if_oerrors;
|
||
WAIT_WOC(sc);
|
||
bus_space_write_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_TSERW,
|
||
(tser & CNW_TSER_ERROR) |
|
||
CNW_TSER_RTRY);
|
||
}
|
||
/* Continue to send packets from the queue */
|
||
cnw_start(&sc->sc_ethercom.ec_if);
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
|
||
/*
|
||
* Handle device ioctls.
|
||
*/
|
||
int
|
||
cnw_ioctl(ifp, cmd, data)
|
||
register struct ifnet *ifp;
|
||
u_long cmd;
|
||
caddr_t data;
|
||
{
|
||
struct cnw_softc *sc = ifp->if_softc;
|
||
struct ifaddr *ifa = (struct ifaddr *)data;
|
||
struct ifreq *ifr = (struct ifreq *)data;
|
||
int s, error = 0;
|
||
struct proc *p = curproc; /*XXX*/
|
||
|
||
s = splnet();
|
||
|
||
switch (cmd) {
|
||
|
||
case SIOCSIFADDR:
|
||
if (!(ifp->if_flags & IFF_RUNNING) &&
|
||
(error = cnw_enable(sc)) != 0)
|
||
break;
|
||
ifp->if_flags |= IFF_UP;
|
||
switch (ifa->ifa_addr->sa_family) {
|
||
#ifdef INET
|
||
case AF_INET:
|
||
cnw_init(sc);
|
||
arp_ifinit(&sc->sc_ethercom.ec_if, ifa);
|
||
break;
|
||
#endif
|
||
default:
|
||
cnw_init(sc);
|
||
break;
|
||
}
|
||
break;
|
||
|
||
case SIOCSIFFLAGS:
|
||
if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_RUNNING) {
|
||
/*
|
||
* The interface is marked down and it is running, so
|
||
* stop it.
|
||
*/
|
||
cnw_disable(sc);
|
||
} else if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_UP){
|
||
/*
|
||
* The interface is marked up and it is stopped, so
|
||
* start it.
|
||
*/
|
||
error = cnw_enable(sc);
|
||
} else {
|
||
/* IFF_PROMISC may be changed */
|
||
cnw_init(sc);
|
||
}
|
||
break;
|
||
|
||
case SIOCADDMULTI:
|
||
case SIOCDELMULTI:
|
||
/* Update our multicast list. */
|
||
error = (cmd == SIOCADDMULTI) ?
|
||
ether_addmulti(ifr, &sc->sc_ethercom) :
|
||
ether_delmulti(ifr, &sc->sc_ethercom);
|
||
if (error == ENETRESET || error == 0) {
|
||
cnw_init(sc);
|
||
error = 0;
|
||
}
|
||
break;
|
||
|
||
case SIOCGCNWDOMAIN:
|
||
((struct ifreq *)data)->ifr_domain = sc->sc_domain;
|
||
break;
|
||
|
||
case SIOCSCNWDOMAIN:
|
||
error = suser(p->p_ucred, &p->p_acflag);
|
||
if (error)
|
||
break;
|
||
error = cnw_setdomain(sc, ifr->ifr_domain);
|
||
break;
|
||
|
||
case SIOCSCNWKEY:
|
||
error = suser(p->p_ucred, &p->p_acflag);
|
||
if (error)
|
||
break;
|
||
error = cnw_setkey(sc, ifr->ifr_key);
|
||
break;
|
||
|
||
case SIOCGCNWSTATUS:
|
||
error = suser(p->p_ucred, &p->p_acflag);
|
||
if (error)
|
||
break;
|
||
if ((ifp->if_flags & IFF_RUNNING) == 0)
|
||
break;
|
||
bus_space_read_region_1(sc->sc_memt, sc->sc_memh,
|
||
sc->sc_memoff + CNW_EREG_CB,
|
||
((struct cnwstatus *)data)->data,
|
||
sizeof(((struct cnwstatus *)data)->data));
|
||
break;
|
||
|
||
case SIOCGCNWSTATS:
|
||
bcopy((void *)&sc->sc_stats,
|
||
(void *)&(((struct cnwistats *)data)->stats),
|
||
sizeof(struct cnwstats));
|
||
break;
|
||
|
||
default:
|
||
error = EINVAL;
|
||
break;
|
||
}
|
||
|
||
splx(s);
|
||
return (error);
|
||
}
|
||
|
||
|
||
/*
|
||
* Device timeout/watchdog routine. Entered if the device neglects to
|
||
* generate an interrupt after a transmit has been started on it.
|
||
*/
|
||
void
|
||
cnw_watchdog(ifp)
|
||
struct ifnet *ifp;
|
||
{
|
||
struct cnw_softc *sc = ifp->if_softc;
|
||
|
||
printf("%s: device timeout; card reset\n", sc->sc_dev.dv_xname);
|
||
++ifp->if_oerrors;
|
||
cnw_init(sc);
|
||
}
|
||
|
||
int
|
||
cnw_setdomain(sc, domain)
|
||
struct cnw_softc *sc;
|
||
int domain;
|
||
{
|
||
int s;
|
||
|
||
if (domain & ~0x1ff)
|
||
return EINVAL;
|
||
|
||
s = splnet();
|
||
CNW_CMD2(sc, CNW_CMD_SMD, domain, domain >> 8);
|
||
splx(s);
|
||
|
||
sc->sc_domain = domain;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
cnw_setkey(sc, key)
|
||
struct cnw_softc *sc;
|
||
int key;
|
||
{
|
||
int s;
|
||
|
||
if (key & ~0xffff)
|
||
return EINVAL;
|
||
|
||
s = splnet();
|
||
CNW_CMD2(sc, CNW_CMD_SSK, key, key >> 8);
|
||
splx(s);
|
||
|
||
sc->sc_skey = key;
|
||
return 0;
|
||
}
|