518 lines
15 KiB
C
518 lines
15 KiB
C
/* $NetBSD: if_lmc_nbsd.c,v 1.17 2002/05/09 20:20:18 matt 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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* The code is derived from permitted modifications to software created
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* by Matt Thomas (matt@3am-software.com).
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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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/*-
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* Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
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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. The name of the author 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_lmc_nbsd.c,v 1.17 2002/05/09 20:20:18 matt Exp $");
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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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#if defined(__FreeBSD__)
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#include <net/if_sppp.h>
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#elif defined(__NetBSD__)
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#include <net/if_spppvar.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/vm.h>
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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 <vm/vm.h>
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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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* This file is INCLUDED (gross, I know, but...)
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*/
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static void lmc_shutdown(void *arg);
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static int lmc_busdma_init(lmc_softc_t * const sc);
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static int lmc_busdma_allocmem(lmc_softc_t * const sc, size_t size,
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bus_dmamap_t *map_p, lmc_desc_t **desc_p);
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static int
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lmc_pci_probe(struct device *parent, struct cfdata *match,
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void *aux)
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{
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struct pci_attach_args *pa = (struct pci_attach_args *)aux;
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u_int32_t id;
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/*
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* check first for the DEC chip we expect to find. We expect
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* 21140A, pass 2.2 or higher.
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*/
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if (PCI_VENDORID(pa->pa_id) != PCI_VENDOR_DEC)
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return 0;
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if (PCI_CHIPID(pa->pa_id) != PCI_PRODUCT_DEC_21140)
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return 0;
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id = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFRV) & 0xff;
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if (id < 0x22)
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return 0;
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/*
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* Next, check the subsystem ID and see if it matches what we
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* expect.
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*/
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id = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SSID);
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if (PCI_VENDORID(id) != PCI_VENDOR_LMC)
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return 0;
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if ((PCI_CHIPID(id) != PCI_PRODUCT_LMC_HSSI)
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&& (PCI_CHIPID(id) != PCI_PRODUCT_LMC_DS3)
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&& (PCI_CHIPID(id) != PCI_PRODUCT_LMC_SSI)
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&& (PCI_CHIPID(id) != PCI_PRODUCT_LMC_DS1))
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return 0;
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return 20; /* must be > than any other tulip driver */
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}
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static void lmc_pci_attach(struct device * const parent,
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struct device * const self, void * const aux);
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struct cfattach lmc_ca = {
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sizeof(lmc_softc_t), lmc_pci_probe, lmc_pci_attach
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};
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static void
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lmc_pci_attach(struct device * const parent,
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struct device * const self, void * const aux)
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{
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u_int32_t revinfo, cfdainfo, id, ssid;
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pci_intr_handle_t intrhandle;
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const char *intrstr;
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unsigned csroffset = LMC_PCI_CSROFFSET;
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unsigned csrsize = LMC_PCI_CSRSIZE;
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lmc_csrptr_t csr_base;
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lmc_spl_t s;
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lmc_intrfunc_t (*intr_rtn)(void *) = lmc_intr_normal;
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lmc_softc_t * const sc = (lmc_softc_t *) self;
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struct pci_attach_args * const pa = (struct pci_attach_args *) aux;
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extern lmc_media_t lmc_hssi_media;
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extern lmc_media_t lmc_ds3_media;
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extern lmc_media_t lmc_t1_media;
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extern lmc_media_t lmc_ssi_media;
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revinfo = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFRV) & 0xFF;
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id = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFID);
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cfdainfo = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFDA);
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ssid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SSID);
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switch (PCI_CHIPID(ssid)) {
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case PCI_PRODUCT_LMC_HSSI:
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printf(": Lan Media Corporation HSSI\n");
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sc->lmc_media = &lmc_hssi_media;
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break;
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case PCI_PRODUCT_LMC_DS3:
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printf(": Lan Media Corporation DS3\n");
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sc->lmc_media = &lmc_ds3_media;
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break;
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case PCI_PRODUCT_LMC_SSI:
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printf(": Lan Media Corporation SSI\n");
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sc->lmc_media = &lmc_ssi_media;
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break;
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case PCI_PRODUCT_LMC_DS1:
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printf(": Lan Media Corporation T1\n");
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sc->lmc_media = &lmc_t1_media;
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break;
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}
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sc->lmc_pci_busno = parent;
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sc->lmc_pci_devno = pa->pa_device;
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sc->lmc_chipid = LMC_21140A;
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sc->lmc_features |= LMC_HAVE_STOREFWD;
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if (sc->lmc_chipid == LMC_21140A && revinfo <= 0x22)
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sc->lmc_features |= LMC_HAVE_RXBADOVRFLW;
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if (cfdainfo & (TULIP_CFDA_SLEEP | TULIP_CFDA_SNOOZE)) {
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cfdainfo &= ~(TULIP_CFDA_SLEEP | TULIP_CFDA_SNOOZE);
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pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_CFDA, cfdainfo);
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DELAY(11 * 1000);
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}
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strcpy(sc->lmc_if.if_xname, self->dv_xname);
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sc->lmc_if.if_softc = sc;
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sc->lmc_pc = pa->pa_pc;
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sc->lmc_revinfo = revinfo;
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sc->lmc_if.if_softc = sc;
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csr_base = 0;
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{
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bus_space_tag_t iot, memt;
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bus_space_handle_t ioh, memh;
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int ioh_valid, memh_valid;
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ioh_valid = (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO,
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0, &iot, &ioh, NULL, NULL) == 0);
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memh_valid = (pci_mapreg_map(pa, PCI_CBMA,
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PCI_MAPREG_TYPE_MEM |
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PCI_MAPREG_MEM_TYPE_32BIT,
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0, &memt, &memh, NULL,
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NULL) == 0);
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if (memh_valid) {
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sc->lmc_bustag = memt;
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sc->lmc_bushandle = memh;
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} else if (ioh_valid) {
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sc->lmc_bustag = iot;
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sc->lmc_bushandle = ioh;
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} else {
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printf("%s: unable to map device registers\n",
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sc->lmc_dev.dv_xname);
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return;
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}
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/* Make sure bus mastering is enabled. */
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pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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pci_conf_read(pa->pa_pc, pa->pa_tag,
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PCI_COMMAND_STATUS_REG) |
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PCI_COMMAND_MASTER_ENABLE);
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}
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#if defined(LMC_BUS_DMA)
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sc->lmc_dmatag = pa->pa_dmat;
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if ((lmc_busdma_init(sc)) != 0) {
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printf("error initing bus_dma\n");
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return;
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}
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#else
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sc->lmc_txdescs = (lmc_desc_t *)
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malloc((LMC_TXDESCS+LMC_RXDESCS)*sizeof(lmc_desc_t),
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M_DEVBUF, M_WAITOK);
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sc->lmc_rxdescs = sc->lmc_txdescs + LMC_TXDESCS;
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#endif
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lmc_initcsrs(sc, csr_base + csroffset, csrsize);
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lmc_initring(sc, &sc->lmc_rxinfo, sc->lmc_rxdescs,
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LMC_RXDESCS);
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lmc_initring(sc, &sc->lmc_txinfo, sc->lmc_txdescs,
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LMC_TXDESCS);
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lmc_gpio_mkinput(sc, 0xff);
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sc->lmc_gpio = 0; /* drive no signals yet */
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sc->lmc_media->defaults(sc);
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sc->lmc_media->set_link_status(sc, LMC_LINK_DOWN); /* down */
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/*
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* Make sure there won't be any interrupts or such...
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*/
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LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
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/*
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* Wait 10 microseconds (actually 50 PCI cycles but at
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* 33MHz that comes to two microseconds but wait a
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* bit longer anyways)
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*/
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DELAY(100);
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lmc_read_macaddr(sc);
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if (pci_intr_map(pa, &intrhandle)) {
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printf("%s: couldn't map interrupt\n",
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sc->lmc_dev.dv_xname);
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return;
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}
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intrstr = pci_intr_string(pa->pa_pc, intrhandle);
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sc->lmc_ih = pci_intr_establish(pa->pa_pc, intrhandle,
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IPL_NET, intr_rtn, sc);
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if (sc->lmc_ih == NULL) {
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printf("%s: couldn't establish interrupt",
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sc->lmc_dev.dv_xname);
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if (intrstr != NULL)
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printf(" at %s", intrstr);
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printf("\n");
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return;
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}
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printf("%s: interrupting at %s\n", sc->lmc_dev.dv_xname, intrstr);
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printf("%s: pass %d.%d, serial " LMC_EADDR_FMT ", %s\n",
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sc->lmc_dev.dv_xname,
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(sc->lmc_revinfo & 0xF0) >> 4, sc->lmc_revinfo & 0x0F,
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LMC_EADDR_ARGS(sc->lmc_enaddr), intrstr);
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sc->lmc_ats = shutdownhook_establish(lmc_shutdown, sc);
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if (sc->lmc_ats == NULL)
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printf("%s: warning: couldn't establish shutdown hook\n",
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sc->lmc_xname);
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s = LMC_RAISESPL();
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lmc_dec_reset(sc);
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lmc_reset(sc);
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lmc_attach(sc);
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LMC_RESTORESPL(s);
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}
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static void
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lmc_shutdown(void *arg)
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{
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lmc_softc_t * const sc = arg;
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LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
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DELAY(10);
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sc->lmc_miireg16 = 0; /* deassert ready, and all others too */
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lmc_led_on(sc, LMC_MII16_LED_ALL);
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sppp_flush(&sc->lmc_if);
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}
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#if defined(LMC_BUS_DMA)
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#if !defined(LMC_BUS_DMA_NOTX) || !defined(LMC_BUS_DMA_NORX)
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static int
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lmc_busdma_allocmem(
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lmc_softc_t * const sc,
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size_t size,
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bus_dmamap_t *map_p,
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lmc_desc_t **desc_p)
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{
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bus_dma_segment_t segs[1];
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int nsegs, error;
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error = bus_dmamem_alloc(sc->lmc_dmatag, size, 1, NBPG,
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segs, sizeof(segs)/sizeof(segs[0]),
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&nsegs, BUS_DMA_NOWAIT);
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if (error == 0) {
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void *desc;
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error = bus_dmamem_map(sc->lmc_dmatag, segs, nsegs, size,
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(void *) &desc, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
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if (error == 0) {
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bus_dmamap_t map;
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error = bus_dmamap_create(sc->lmc_dmatag, size, 1, size, 0,
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BUS_DMA_NOWAIT, &map);
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if (error == 0) {
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error = bus_dmamap_load(sc->lmc_dmatag, map, desc,
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size, NULL, BUS_DMA_NOWAIT);
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if (error)
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bus_dmamap_destroy(sc->lmc_dmatag, map);
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else
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*map_p = map;
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}
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if (error)
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bus_dmamem_unmap(sc->lmc_dmatag, desc, size);
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}
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if (error)
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bus_dmamem_free(sc->lmc_dmatag, segs, nsegs);
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else
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*desc_p = desc;
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}
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return error;
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}
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#endif
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static int
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lmc_busdma_init(
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lmc_softc_t * const sc)
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{
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int error = 0;
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#if !defined(LMC_BUS_DMA_NOTX)
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/*
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* Allocate space and dmamap for transmit ring
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*/
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if (error == 0) {
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error = lmc_busdma_allocmem(sc, sizeof(lmc_desc_t) * LMC_TXDESCS,
|
||
&sc->lmc_txdescmap,
|
||
&sc->lmc_txdescs);
|
||
}
|
||
|
||
/*
|
||
* Allocate dmamaps for each transmit descriptors
|
||
*/
|
||
if (error == 0) {
|
||
while (error == 0 && sc->lmc_txmaps_free < LMC_TXDESCS) {
|
||
bus_dmamap_t map;
|
||
if ((error = LMC_TXMAP_CREATE(sc, &map)) == 0)
|
||
sc->lmc_txmaps[sc->lmc_txmaps_free++] = map;
|
||
}
|
||
if (error) {
|
||
while (sc->lmc_txmaps_free > 0)
|
||
bus_dmamap_destroy(sc->lmc_dmatag,
|
||
sc->lmc_txmaps[--sc->lmc_txmaps_free]);
|
||
}
|
||
}
|
||
#else
|
||
if (error == 0) {
|
||
sc->lmc_txdescs = (lmc_desc_t *) malloc(LMC_TXDESCS * sizeof(lmc_desc_t), M_DEVBUF, M_NOWAIT);
|
||
if (sc->lmc_txdescs == NULL)
|
||
error = ENOMEM;
|
||
}
|
||
#endif
|
||
#if !defined(LMC_BUS_DMA_NORX)
|
||
/*
|
||
* Allocate space and dmamap for receive ring
|
||
*/
|
||
if (error == 0) {
|
||
error = lmc_busdma_allocmem(sc, sizeof(lmc_desc_t) * LMC_RXDESCS,
|
||
&sc->lmc_rxdescmap,
|
||
&sc->lmc_rxdescs);
|
||
}
|
||
|
||
/*
|
||
* Allocate dmamaps for each receive descriptors
|
||
*/
|
||
if (error == 0) {
|
||
while (error == 0 && sc->lmc_rxmaps_free < LMC_RXDESCS) {
|
||
bus_dmamap_t map;
|
||
if ((error = LMC_RXMAP_CREATE(sc, &map)) == 0)
|
||
sc->lmc_rxmaps[sc->lmc_rxmaps_free++] = map;
|
||
}
|
||
if (error) {
|
||
while (sc->lmc_rxmaps_free > 0)
|
||
bus_dmamap_destroy(sc->lmc_dmatag,
|
||
sc->lmc_rxmaps[--sc->lmc_rxmaps_free]);
|
||
}
|
||
}
|
||
#else
|
||
if (error == 0) {
|
||
sc->lmc_rxdescs = (lmc_desc_t *) malloc(LMC_RXDESCS * sizeof(lmc_desc_t), M_DEVBUF, M_NOWAIT);
|
||
if (sc->lmc_rxdescs == NULL)
|
||
error = ENOMEM;
|
||
}
|
||
#endif
|
||
return error;
|
||
}
|
||
#endif /* LMC_BUS_DMA */
|