794 lines
20 KiB
C
794 lines
20 KiB
C
/* $NetBSD: if_lmc_media.c,v 1.2 2000/05/03 21:08:02 thorpej Exp $ */
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/*-
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* Copyright (c) 1997-1999 LAN Media Corporation (LMC)
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* All rights reserved. www.lanmedia.com
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*
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* This code is written by Michael Graff <graff@vix.com> for LMC.
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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
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* 3. All marketing or advertising materials mentioning features or
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* use of this software must display the following acknowledgement:
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* This product includes software developed by LAN Media Corporation
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* and its contributors.
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* 4. Neither the name of LAN Media Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/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/malloc.h>
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#include <sys/kernel.h>
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#include <sys/proc.h> /* only for declaration of wakeup() used by vm.h */
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#if defined(__FreeBSD__)
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#include <machine/clock.h>
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#elif defined(__bsdi__) || defined(__NetBSD__)
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#include <sys/device.h>
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#endif
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#if defined(__NetBSD__)
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#include <dev/pci/pcidevs.h>
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#include "rnd.h"
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#if NRND > 0
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#include <sys/rnd.h>
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#endif
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#endif
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/if_dl.h>
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#include <net/netisr.h>
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#include "bpfilter.h"
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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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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_kern.h>
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#if defined(__FreeBSD__) || defined(__NetBSD__)
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#include <net/if_sppp.h>
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#endif
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#if defined(__bsdi__)
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#if INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#endif
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#include <net/netisr.h>
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#include <net/if.h>
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#include <net/netisr.h>
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#include <net/if_types.h>
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#include <net/if_p2p.h>
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#include <net/if_c_hdlc.h>
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#endif
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#if defined(__FreeBSD__)
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#include <vm/pmap.h>
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#include <pci.h>
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#if NPCI > 0
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#include <pci/pcivar.h>
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#include <pci/dc21040reg.h>
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#endif
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#endif /* __FreeBSD__ */
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#if defined(__bsdi__)
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#include <i386/pci/ic/dc21040.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/icu.h>
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#include <i386/isa/dma.h>
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#include <i386/isa/isavar.h>
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#include <i386/pci/pci.h>
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#endif /* __bsdi__ */
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#if defined(__NetBSD__)
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#include <machine/bus.h>
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#if defined(__alpha__)
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#include <machine/intr.h>
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#endif
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/ic/dc21040reg.h>
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#endif /* __NetBSD__ */
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/*
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* Sigh. Every OS puts these in different places.
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*/
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#if defined(__NetBSD__)
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#include <dev/pci/if_lmc_types.h>
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#include <dev/pci/if_lmcioctl.h>
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#include <dev/pci/if_lmcvar.h>
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#elif defined(__FreeBSD__)
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#include "pci/if_lmc_types.h"
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#include "pci/if_lmcioctl.h"
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#include "pci/if_lmcvar.h"
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#else /* BSDI */
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#include "i386/pci/if_lmctypes.h"
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#include "i386/pci/if_lmcioctl.h"
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#include "i386/pci/if_lmcvar.h"
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#endif
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/*
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* For lack of a better place, put the T1 cable stuff here.
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*/
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char *lmc_t1_cables[] = {
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"V.10/RS423", "EIA530A", "reserved", "X.21", "V.35",
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"EIA449/EIA530/V.36", "V.28/EIA232", "none", NULL
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};
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/*
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* protocol independent method.
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*/
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static void lmc_set_protocol(lmc_softc_t * const, lmc_ctl_t *);
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/*
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* media independent methods to check on media status, link, light LEDs,
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* etc.
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*/
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static void lmc_ds3_init(lmc_softc_t * const);
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static void lmc_ds3_default(lmc_softc_t * const);
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static void lmc_ds3_set_status(lmc_softc_t * const, lmc_ctl_t *);
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static void lmc_ds3_set_100ft(lmc_softc_t * const, int);
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static int lmc_ds3_get_link_status(lmc_softc_t * const);
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static void lmc_ds3_set_crc_length(lmc_softc_t * const, int);
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static void lmc_ds3_set_scram(lmc_softc_t * const, int);
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static void lmc_hssi_init(lmc_softc_t * const);
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static void lmc_hssi_default(lmc_softc_t * const);
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static void lmc_hssi_set_status(lmc_softc_t * const, lmc_ctl_t *);
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static void lmc_hssi_set_clock(lmc_softc_t * const, int);
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static int lmc_hssi_get_link_status(lmc_softc_t * const);
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static void lmc_hssi_set_link_status(lmc_softc_t * const, int);
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static void lmc_hssi_set_crc_length(lmc_softc_t * const, int);
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static void lmc_t1_init(lmc_softc_t * const);
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static void lmc_t1_default(lmc_softc_t * const);
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static void lmc_t1_set_status(lmc_softc_t * const, lmc_ctl_t *);
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static void lmc_t1_set_clock(lmc_softc_t * const, int);
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static void lmc_t1_set_speed(lmc_softc_t * const, lmc_ctl_t *);
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static int lmc_t1_get_link_status(lmc_softc_t * const);
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static void lmc_t1_set_link_status(lmc_softc_t * const, int);
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static void lmc_t1_set_crc_length(lmc_softc_t * const, int);
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static void lmc_dummy_set_1(lmc_softc_t * const, int);
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static void lmc_dummy_set2_1(lmc_softc_t * const, lmc_ctl_t *);
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static inline void write_av9110_bit(lmc_softc_t *, int);
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static void write_av9110(lmc_softc_t *, u_int32_t, u_int32_t, u_int32_t,
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u_int32_t, u_int32_t);
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lmc_media_t lmc_ds3_media = {
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lmc_ds3_init, /* special media init stuff */
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lmc_ds3_default, /* reset to default state */
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lmc_ds3_set_status, /* reset status to state provided */
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lmc_dummy_set_1, /* set clock source */
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lmc_dummy_set2_1, /* set line speed */
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lmc_ds3_set_100ft, /* set cable length */
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lmc_ds3_set_scram, /* set scrambler */
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lmc_ds3_get_link_status, /* get link status */
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lmc_dummy_set_1, /* set link status */
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lmc_ds3_set_crc_length, /* set CRC length */
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};
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lmc_media_t lmc_hssi_media = {
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lmc_hssi_init, /* special media init stuff */
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lmc_hssi_default, /* reset to default state */
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lmc_hssi_set_status, /* reset status to state provided */
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lmc_hssi_set_clock, /* set clock source */
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lmc_dummy_set2_1, /* set line speed */
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lmc_dummy_set_1, /* set cable length */
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lmc_dummy_set_1, /* set scrambler */
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lmc_hssi_get_link_status, /* get link status */
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lmc_hssi_set_link_status, /* set link status */
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lmc_hssi_set_crc_length, /* set CRC length */
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};
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lmc_media_t lmc_t1_media = {
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lmc_t1_init, /* special media init stuff */
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lmc_t1_default, /* reset to default state */
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lmc_t1_set_status, /* reset status to state provided */
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lmc_t1_set_clock, /* set clock source */
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lmc_t1_set_speed, /* set line speed */
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lmc_dummy_set_1, /* set cable length */
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lmc_dummy_set_1, /* set scrambler */
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lmc_t1_get_link_status, /* get link status */
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lmc_t1_set_link_status, /* set link status */
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lmc_t1_set_crc_length, /* set CRC length */
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};
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static void
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lmc_dummy_set_1(lmc_softc_t * const sc, int a)
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{
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}
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static void
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lmc_dummy_set2_1(lmc_softc_t * const sc, lmc_ctl_t *a)
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{
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}
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/*
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* HSSI methods
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*/
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static void
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lmc_hssi_init(lmc_softc_t * const sc)
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{
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sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200;
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lmc_gpio_mkoutput(sc, LMC_GEP_HSSI_CLOCK);
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}
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static void
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lmc_hssi_default(lmc_softc_t * const sc)
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{
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sc->lmc_miireg16 = LMC_MII16_LED_ALL;
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sc->lmc_media->set_link_status(sc, 0);
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sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
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sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
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}
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/*
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* Given a user provided state, set ourselves up to match it. This will
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* always reset the card if needed.
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*/
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static void
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lmc_hssi_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
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{
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if (ctl == NULL) {
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sc->lmc_media->set_clock_source(sc, sc->ictl.clock_source);
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lmc_set_protocol(sc, NULL);
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return;
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}
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/*
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* check for change in clock source
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*/
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if (ctl->clock_source && !sc->ictl.clock_source)
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sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_INT);
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else if (!ctl->clock_source && sc->ictl.clock_source)
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sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
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lmc_set_protocol(sc, ctl);
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}
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/*
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* 1 == internal, 0 == external
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*/
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static void
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lmc_hssi_set_clock(lmc_softc_t * const sc, int ie)
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{
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if (ie == LMC_CTL_CLOCK_SOURCE_EXT) {
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sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK;
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LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
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sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
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printf(LMC_PRINTF_FMT ": clock external\n",
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LMC_PRINTF_ARGS);
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} else {
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sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK);
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LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
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sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
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printf(LMC_PRINTF_FMT ": clock internal\n",
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LMC_PRINTF_ARGS);
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}
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}
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/*
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* return hardware link status.
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* 0 == link is down, 1 == link is up.
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*/
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static int
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lmc_hssi_get_link_status(lmc_softc_t * const sc)
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{
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u_int16_t link_status;
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link_status = lmc_mii_readreg(sc, 0, 16);
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if ((link_status & LMC_MII16_HSSI_CA) == LMC_MII16_HSSI_CA)
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return 1;
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else
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return 0;
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}
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static void
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lmc_hssi_set_link_status(lmc_softc_t * const sc, int state)
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{
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if (state)
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sc->lmc_miireg16 |= LMC_MII16_HSSI_TA;
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else
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sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA;
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lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
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}
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/*
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* 0 == 16bit, 1 == 32bit
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*/
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static void
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lmc_hssi_set_crc_length(lmc_softc_t * const sc, int state)
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{
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if (state == LMC_CTL_CRC_LENGTH_32) {
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/* 32 bit */
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sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC;
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sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
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} else {
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/* 16 bit */
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sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC;
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sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
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}
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lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
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}
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/*
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* DS3 methods
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*/
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/*
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* Set cable length
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*/
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static void
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lmc_ds3_set_100ft(lmc_softc_t * const sc, int ie)
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{
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if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT) {
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sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO;
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sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT;
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} else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT) {
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sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO;
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sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT;
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}
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lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
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}
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static void
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lmc_ds3_default(lmc_softc_t * const sc)
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{
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sc->lmc_miireg16 = LMC_MII16_LED_ALL;
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sc->lmc_media->set_link_status(sc, 0);
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sc->lmc_media->set_cable_length(sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
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sc->lmc_media->set_scrambler(sc, LMC_CTL_OFF);
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sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
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}
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/*
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* Given a user provided state, set ourselves up to match it. This will
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* always reset the card if needed.
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*/
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static void
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lmc_ds3_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
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{
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if (ctl == NULL) {
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sc->lmc_media->set_cable_length(sc, sc->ictl.cable_length);
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sc->lmc_media->set_scrambler(sc, sc->ictl.scrambler_onoff);
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lmc_set_protocol(sc, NULL);
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return;
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}
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/*
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* check for change in cable length setting
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*/
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if (ctl->cable_length && !sc->ictl.cable_length)
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lmc_ds3_set_100ft(sc, LMC_CTL_CABLE_LENGTH_GT_100FT);
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else if (!ctl->cable_length && sc->ictl.cable_length)
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lmc_ds3_set_100ft(sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
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/*
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* Check for change in scrambler setting (requires reset)
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*/
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if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff)
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lmc_ds3_set_scram(sc, LMC_CTL_ON);
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else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff)
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lmc_ds3_set_scram(sc, LMC_CTL_OFF);
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lmc_set_protocol(sc, ctl);
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}
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static void
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lmc_ds3_init(lmc_softc_t * const sc)
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{
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int i;
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sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245;
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/* writes zeros everywhere */
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for (i = 0 ; i < 21 ; i++) {
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lmc_mii_writereg(sc, 0, 17, i);
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lmc_mii_writereg(sc, 0, 18, 0);
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}
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/* set some essential bits */
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lmc_mii_writereg(sc, 0, 17, 1);
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lmc_mii_writereg(sc, 0, 18, 0x05); /* ser, xtx */
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lmc_mii_writereg(sc, 0, 17, 5);
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lmc_mii_writereg(sc, 0, 18, 0x80); /* emode */
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lmc_mii_writereg(sc, 0, 17, 14);
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lmc_mii_writereg(sc, 0, 18, 0x30); /* rcgen, tcgen */
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/* clear counters and latched bits */
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for (i = 0 ; i < 21 ; i++) {
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lmc_mii_writereg(sc, 0, 17, i);
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lmc_mii_readreg(sc, 0, 18);
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}
|
|
}
|
|
|
|
/*
|
|
* 1 == DS3 payload scrambled, 0 == not scrambled
|
|
*/
|
|
static void
|
|
lmc_ds3_set_scram(lmc_softc_t * const sc, int ie)
|
|
{
|
|
if (ie == LMC_CTL_ON) {
|
|
sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM;
|
|
sc->ictl.scrambler_onoff = LMC_CTL_ON;
|
|
} else {
|
|
sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM;
|
|
sc->ictl.scrambler_onoff = LMC_CTL_OFF;
|
|
}
|
|
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
|
|
}
|
|
|
|
/*
|
|
* return hardware link status.
|
|
* 0 == link is down, 1 == link is up.
|
|
*/
|
|
static int
|
|
lmc_ds3_get_link_status(lmc_softc_t * const sc)
|
|
{
|
|
u_int16_t link_status;
|
|
|
|
lmc_mii_writereg(sc, 0, 17, 7);
|
|
link_status = lmc_mii_readreg(sc, 0, 18);
|
|
|
|
if ((link_status & LMC_FRAMER_REG0_DLOS) == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 0 == 16bit, 1 == 32bit
|
|
*/
|
|
static void
|
|
lmc_ds3_set_crc_length(lmc_softc_t * const sc, int state)
|
|
{
|
|
if (state == LMC_CTL_CRC_LENGTH_32) {
|
|
/* 32 bit */
|
|
sc->lmc_miireg16 |= LMC_MII16_DS3_CRC;
|
|
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
|
|
} else {
|
|
/* 16 bit */
|
|
sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC;
|
|
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
|
|
}
|
|
|
|
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
|
|
}
|
|
|
|
|
|
/*
|
|
* T1 methods
|
|
*/
|
|
|
|
static void
|
|
lmc_t1_init(lmc_softc_t * const sc)
|
|
{
|
|
u_int16_t mii17;
|
|
int cable;
|
|
|
|
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000;
|
|
|
|
mii17 = lmc_mii_readreg(sc, 0, 17);
|
|
|
|
cable = (mii17 & LMC_MII17_T1_CABLE_MASK) >> LMC_MII17_T1_CABLE_SHIFT;
|
|
sc->ictl.cable_type = cable;
|
|
|
|
lmc_gpio_mkoutput(sc, LMC_GEP_T1_TXCLOCK);
|
|
}
|
|
|
|
static void
|
|
lmc_t1_default(lmc_softc_t * const sc)
|
|
{
|
|
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
|
|
|
|
/*
|
|
* make TXCLOCK always be an output
|
|
*/
|
|
lmc_gpio_mkoutput(sc, LMC_GEP_T1_TXCLOCK);
|
|
|
|
sc->lmc_media->set_link_status(sc, 0);
|
|
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
|
|
sc->lmc_media->set_speed(sc, NULL);
|
|
sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
|
|
}
|
|
|
|
/*
|
|
* Given a user provided state, set ourselves up to match it. This will
|
|
* always reset the card if needed.
|
|
*/
|
|
static void
|
|
lmc_t1_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
|
|
{
|
|
if (ctl == NULL) {
|
|
sc->lmc_media->set_clock_source(sc, sc->ictl.clock_source);
|
|
sc->lmc_media->set_speed(sc, &sc->ictl);
|
|
lmc_set_protocol(sc, NULL);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* check for change in clock source
|
|
*/
|
|
if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT
|
|
&& sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT)
|
|
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_INT);
|
|
else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT
|
|
&& sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT)
|
|
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
|
|
|
|
if (ctl->clock_rate != sc->ictl.clock_rate)
|
|
sc->lmc_media->set_speed(sc, ctl);
|
|
|
|
lmc_set_protocol(sc, ctl);
|
|
}
|
|
|
|
/*
|
|
* 1 == internal, 0 == external
|
|
*/
|
|
static void
|
|
lmc_t1_set_clock(lmc_softc_t * const sc, int ie)
|
|
{
|
|
if (ie == LMC_CTL_CLOCK_SOURCE_EXT) {
|
|
sc->lmc_gpio &= ~(LMC_GEP_T1_TXCLOCK);
|
|
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
|
|
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
|
|
printf(LMC_PRINTF_FMT ": clock external\n",
|
|
LMC_PRINTF_ARGS);
|
|
} else {
|
|
sc->lmc_gpio |= LMC_GEP_T1_TXCLOCK;
|
|
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
|
|
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
|
|
printf(LMC_PRINTF_FMT ": clock internal\n",
|
|
LMC_PRINTF_ARGS);
|
|
}
|
|
}
|
|
|
|
static void
|
|
lmc_t1_set_speed(lmc_softc_t * const sc, lmc_ctl_t *ctl)
|
|
{
|
|
lmc_ctl_t *ictl = &sc->ictl;
|
|
lmc_av9110_t *av;
|
|
|
|
if (ctl == NULL) {
|
|
av = &ictl->cardspec.t1;
|
|
ictl->clock_rate = 100000;
|
|
av->f = ictl->clock_rate;
|
|
av->n = 8;
|
|
av->m = 25;
|
|
av->v = 0;
|
|
av->x = 0;
|
|
av->r = 2;
|
|
|
|
write_av9110(sc, av->n, av->m, av->v, av->x, av->r);
|
|
return;
|
|
}
|
|
|
|
av = &ctl->cardspec.t1;
|
|
|
|
if (av->f == 0)
|
|
return;
|
|
|
|
ictl->clock_rate = av->f; /* really, this is the rate we are */
|
|
ictl->cardspec.t1 = *av;
|
|
|
|
write_av9110(sc, av->n, av->m, av->v, av->x, av->r);
|
|
}
|
|
|
|
/*
|
|
* return hardware link status.
|
|
* 0 == link is down, 1 == link is up.
|
|
*/
|
|
static int
|
|
lmc_t1_get_link_status(lmc_softc_t * const sc)
|
|
{
|
|
u_int16_t link_status;
|
|
|
|
/*
|
|
* missing CTS? Hmm. If we require CTS on, we may never get the
|
|
* link to come up, so omit it in this test.
|
|
*
|
|
* Also, it seems that with a loopback cable, DCD isn't asserted,
|
|
* so just check for things like this:
|
|
* DSR _must_ be asserted.
|
|
* One of DCD or CTS must be asserted.
|
|
*/
|
|
link_status = lmc_mii_readreg(sc, 0, 16);
|
|
|
|
if ((link_status & LMC_MII16_T1_DSR) == 0)
|
|
return (0);
|
|
|
|
if ((link_status & (LMC_MII16_T1_CTS | LMC_MII16_T1_DCD)) == 0)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
lmc_t1_set_link_status(lmc_softc_t * const sc, int state)
|
|
{
|
|
if (state) {
|
|
sc->lmc_miireg16 |= (LMC_MII16_T1_DTR | LMC_MII16_T1_RTS);
|
|
printf(LMC_PRINTF_FMT ": asserting DTR and RTS\n",
|
|
LMC_PRINTF_ARGS);
|
|
} else {
|
|
sc->lmc_miireg16 &= ~(LMC_MII16_T1_DTR | LMC_MII16_T1_RTS);
|
|
printf(LMC_PRINTF_FMT ": deasserting DTR and RTS\n",
|
|
LMC_PRINTF_ARGS);
|
|
}
|
|
|
|
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
|
|
}
|
|
|
|
/*
|
|
* 0 == 16bit, 1 == 32bit
|
|
*/
|
|
static void
|
|
lmc_t1_set_crc_length(lmc_softc_t * const sc, int state)
|
|
{
|
|
if (state == LMC_CTL_CRC_LENGTH_32) {
|
|
/* 32 bit */
|
|
sc->lmc_miireg16 |= LMC_MII16_T1_CRC;
|
|
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
|
|
} else {
|
|
/* 16 bit */
|
|
sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC;
|
|
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
|
|
}
|
|
|
|
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
|
|
}
|
|
|
|
/*
|
|
* These are bits to program the T1 frequency generator
|
|
*/
|
|
static inline void
|
|
write_av9110_bit(lmc_softc_t *sc, int c)
|
|
{
|
|
/*
|
|
* set the data bit as we need it.
|
|
*/
|
|
sc->lmc_gpio &= ~(LMC_GEP_SERIALCLK);
|
|
if (c & 0x01)
|
|
sc->lmc_gpio |= LMC_GEP_SERIAL;
|
|
else
|
|
sc->lmc_gpio &= ~(LMC_GEP_SERIAL);
|
|
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
|
|
|
|
/*
|
|
* set the clock to high
|
|
*/
|
|
sc->lmc_gpio |= LMC_GEP_SERIALCLK;
|
|
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
|
|
|
|
/*
|
|
* set the clock to low again.
|
|
*/
|
|
sc->lmc_gpio &= ~(LMC_GEP_SERIALCLK);
|
|
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
|
|
}
|
|
|
|
static void
|
|
write_av9110(lmc_softc_t *sc, u_int32_t n, u_int32_t m, u_int32_t v,
|
|
u_int32_t x, u_int32_t r)
|
|
{
|
|
int i;
|
|
|
|
#if 0
|
|
printf(LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n",
|
|
LMC_PRINTF_ARGS, sc->ictl.clock_rate,
|
|
n, m, v, x, r);
|
|
#endif
|
|
|
|
sc->lmc_gpio |= LMC_GEP_T1_GENERATOR;
|
|
sc->lmc_gpio &= ~(LMC_GEP_SERIAL | LMC_GEP_SERIALCLK);
|
|
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
|
|
|
|
/*
|
|
* Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK
|
|
* as outputs.
|
|
*/
|
|
lmc_gpio_mkoutput(sc, (LMC_GEP_SERIAL | LMC_GEP_SERIALCLK
|
|
| LMC_GEP_T1_GENERATOR));
|
|
|
|
sc->lmc_gpio &= ~(LMC_GEP_T1_GENERATOR);
|
|
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
|
|
|
|
/*
|
|
* a shifting we will go...
|
|
*/
|
|
for (i = 0 ; i < 7 ; i++)
|
|
write_av9110_bit(sc, n >> i);
|
|
for (i = 0 ; i < 7 ; i++)
|
|
write_av9110_bit(sc, m >> i);
|
|
for (i = 0 ; i < 1 ; i++)
|
|
write_av9110_bit(sc, v >> i);
|
|
for (i = 0 ; i < 2 ; i++)
|
|
write_av9110_bit(sc, x >> i);
|
|
for (i = 0 ; i < 2 ; i++)
|
|
write_av9110_bit(sc, r >> i);
|
|
for (i = 0 ; i < 5 ; i++)
|
|
write_av9110_bit(sc, 0x17 >> i);
|
|
|
|
/*
|
|
* stop driving serial-related signals
|
|
*/
|
|
lmc_gpio_mkinput(sc,
|
|
(LMC_GEP_SERIAL | LMC_GEP_SERIALCLK
|
|
| LMC_GEP_T1_GENERATOR));
|
|
}
|
|
|
|
static void
|
|
lmc_set_protocol(lmc_softc_t * const sc, lmc_ctl_t *ctl)
|
|
{
|
|
if (ctl == 0) {
|
|
sc->ictl.keepalive_onoff = LMC_CTL_ON;
|
|
|
|
return;
|
|
}
|
|
|
|
#if defined(__NetBSD__) || defined(__FreeBSD__)
|
|
if (ctl->keepalive_onoff != sc->ictl.keepalive_onoff) {
|
|
switch (ctl->keepalive_onoff) {
|
|
case LMC_CTL_ON:
|
|
printf(LMC_PRINTF_FMT ": enabling keepalive\n",
|
|
LMC_PRINTF_ARGS);
|
|
sc->ictl.keepalive_onoff = LMC_CTL_ON;
|
|
sc->lmc_sppp.pp_flags = PP_CISCO | PP_KEEPALIVE;
|
|
break;
|
|
case LMC_CTL_OFF:
|
|
printf(LMC_PRINTF_FMT ": disabling keepalive\n",
|
|
LMC_PRINTF_ARGS);
|
|
sc->ictl.keepalive_onoff = LMC_CTL_OFF;
|
|
sc->lmc_sppp.pp_flags = PP_CISCO;
|
|
}
|
|
}
|
|
#endif
|
|
}
|