0e4e9e170c
configuration registers directly. Remove pci_enable_io calls where they are redundant. The PCI bus driver will set the right bits when the corresponding bus resource is activated. Remove redundant pci_* function calls from suspend/resume methods. The bus driver already saves and restores the PCI configuration. Reviewed by: jhb Approved by: kib (mentor)
509 lines
15 KiB
C
509 lines
15 KiB
C
/* $NetBSD: if_le_pci.c,v 1.43 2005/12/11 12:22:49 christos Exp $ */
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/*-
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation 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 THE NETBSD FOUNDATION, INC. 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 THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell and Rick Macklem.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_le.c 8.2 (Berkeley) 11/16/93
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/socket.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/le/lancereg.h>
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#include <dev/le/lancevar.h>
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#include <dev/le/am79900var.h>
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#define AMD_VENDOR 0x1022
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#define AMD_PCNET_PCI 0x2000
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#define AMD_PCNET_HOME 0x2001
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#define PCNET_MEMSIZE (32*1024)
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#define PCNET_PCI_RDP 0x10
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#define PCNET_PCI_RAP 0x12
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#define PCNET_PCI_BDP 0x16
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struct le_pci_softc {
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struct am79900_softc sc_am79900; /* glue to MI code */
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struct resource *sc_rres;
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struct resource *sc_ires;
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void *sc_ih;
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bus_dma_tag_t sc_pdmat;
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bus_dma_tag_t sc_dmat;
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bus_dmamap_t sc_dmam;
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};
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static device_probe_t le_pci_probe;
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static device_attach_t le_pci_attach;
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static device_detach_t le_pci_detach;
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static device_resume_t le_pci_resume;
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static device_suspend_t le_pci_suspend;
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static device_method_t le_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, le_pci_probe),
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DEVMETHOD(device_attach, le_pci_attach),
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DEVMETHOD(device_detach, le_pci_detach),
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/* We can just use the suspend method here. */
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DEVMETHOD(device_shutdown, le_pci_suspend),
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DEVMETHOD(device_suspend, le_pci_suspend),
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DEVMETHOD(device_resume, le_pci_resume),
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{ 0, 0 }
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};
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DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc));
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DRIVER_MODULE(le, pci, le_pci_driver, le_devclass, 0, 0);
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MODULE_DEPEND(le, ether, 1, 1, 1);
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static const int le_home_supmedia[] = {
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IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0)
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};
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static const int le_pci_supmedia[] = {
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IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0),
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IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0),
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IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0),
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IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0),
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IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0),
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IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0)
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};
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static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t);
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static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t);
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static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t);
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static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t);
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static int le_pci_mediachange(struct lance_softc *);
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static void le_pci_hwreset(struct lance_softc *);
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static bus_dmamap_callback_t le_pci_dma_callback;
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static void
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le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val)
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{
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struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
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bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
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bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
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bus_write_2(lesc->sc_rres, PCNET_PCI_BDP, val);
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}
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static uint16_t
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le_pci_rdbcr(struct lance_softc *sc, uint16_t port)
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{
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struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
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bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
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bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
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return (bus_read_2(lesc->sc_rres, PCNET_PCI_BDP));
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}
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static void
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le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
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{
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struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
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bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
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bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
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bus_write_2(lesc->sc_rres, PCNET_PCI_RDP, val);
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}
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static uint16_t
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le_pci_rdcsr(struct lance_softc *sc, uint16_t port)
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{
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struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
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bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
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bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
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return (bus_read_2(lesc->sc_rres, PCNET_PCI_RDP));
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}
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static int
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le_pci_mediachange(struct lance_softc *sc)
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{
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struct ifmedia *ifm = &sc->sc_media;
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uint16_t reg;
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if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
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return (EINVAL);
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if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1)
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le_pci_wrbcr(sc, LE_BCR49,
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(le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1);
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else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO)
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le_pci_wrbcr(sc, LE_BCR2,
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le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL);
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else {
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le_pci_wrbcr(sc, LE_BCR2,
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le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL);
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reg = le_pci_rdcsr(sc, LE_CSR15);
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reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK);
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if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T)
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reg |= LE_C15_PORTSEL(LE_PORTSEL_10T);
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else
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reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI);
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le_pci_wrcsr(sc, LE_CSR15, reg);
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}
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reg = le_pci_rdbcr(sc, LE_BCR9);
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if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) {
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reg |= LE_B9_FDEN;
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/*
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* Allow FDX on AUI only if explicitly chosen,
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* not in autoselect mode.
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*/
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if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5)
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reg |= LE_B9_AUIFD;
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else
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reg &= ~LE_B9_AUIFD;
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} else
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reg &= ~LE_B9_FDEN;
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le_pci_wrbcr(sc, LE_BCR9, reg);
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return (0);
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}
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static void
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le_pci_hwreset(struct lance_softc *sc)
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{
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/*
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* Chip is stopped. Set software style to PCnet-PCI (32-bit).
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* Actually, am79900.c implements ILACC support (hence its
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* name) but unfortunately VMware does not. As far as this
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* driver is concerned that should not make a difference
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* though, as the settings used have the same meaning for
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* both, ILACC and PCnet-PCI (note that there would be a
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* difference for the ADD_FCS/NO_FCS bit if used).
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*/
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le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2);
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}
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static void
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le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
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{
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struct lance_softc *sc = (struct lance_softc *)xsc;
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if (error != 0)
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return;
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KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__));
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sc->sc_addr = segs[0].ds_addr;
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}
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static int
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le_pci_probe(device_t dev)
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{
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if (pci_get_vendor(dev) != AMD_VENDOR)
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return (ENXIO);
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switch (pci_get_device(dev)) {
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case AMD_PCNET_PCI:
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device_set_desc(dev, "AMD PCnet-PCI");
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/* Let pcn(4) win. */
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return (BUS_PROBE_LOW_PRIORITY);
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case AMD_PCNET_HOME:
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device_set_desc(dev, "AMD PCnet-Home");
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/* Let pcn(4) win. */
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return (BUS_PROBE_LOW_PRIORITY);
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default:
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return (ENXIO);
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}
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}
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static int
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le_pci_attach(device_t dev)
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{
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struct le_pci_softc *lesc;
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struct lance_softc *sc;
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int error, i;
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lesc = device_get_softc(dev);
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sc = &lesc->sc_am79900.lsc;
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LE_LOCK_INIT(sc, device_get_nameunit(dev));
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pci_enable_busmaster(dev);
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i = PCIR_BAR(0);
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lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
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&i, RF_ACTIVE);
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if (lesc->sc_rres == NULL) {
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device_printf(dev, "cannot allocate registers\n");
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error = ENXIO;
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goto fail_mtx;
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}
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i = 0;
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if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
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&i, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
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device_printf(dev, "cannot allocate interrupt\n");
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error = ENXIO;
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goto fail_rres;
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}
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error = bus_dma_tag_create(
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bus_get_dma_tag(dev), /* parent */
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1, 0, /* alignment, boundary */
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BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
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0, /* nsegments */
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BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
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0, /* flags */
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NULL, NULL, /* lockfunc, lockarg */
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&lesc->sc_pdmat);
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if (error != 0) {
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device_printf(dev, "cannot allocate parent DMA tag\n");
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goto fail_ires;
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}
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sc->sc_memsize = PCNET_MEMSIZE;
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/*
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* For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte
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* aligned and the ring descriptors must be 16-byte aligned when using
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* a 32-bit software style.
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*/
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error = bus_dma_tag_create(
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lesc->sc_pdmat, /* parent */
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16, 0, /* alignment, boundary */
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BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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sc->sc_memsize, /* maxsize */
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1, /* nsegments */
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sc->sc_memsize, /* maxsegsize */
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0, /* flags */
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NULL, NULL, /* lockfunc, lockarg */
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&lesc->sc_dmat);
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if (error != 0) {
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device_printf(dev, "cannot allocate buffer DMA tag\n");
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goto fail_pdtag;
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}
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error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem,
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BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam);
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if (error != 0) {
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device_printf(dev, "cannot allocate DMA buffer memory\n");
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goto fail_dtag;
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}
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sc->sc_addr = 0;
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error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem,
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sc->sc_memsize, le_pci_dma_callback, sc, 0);
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if (error != 0 || sc->sc_addr == 0) {
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device_printf(dev, "cannot load DMA buffer map\n");
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goto fail_dmem;
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}
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sc->sc_flags = LE_BSWAP;
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sc->sc_conf3 = 0;
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sc->sc_mediastatus = NULL;
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switch (pci_get_device(dev)) {
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case AMD_PCNET_HOME:
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sc->sc_mediachange = le_pci_mediachange;
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sc->sc_supmedia = le_home_supmedia;
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sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int);
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sc->sc_defaultmedia = le_home_supmedia[0];
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break;
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default:
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sc->sc_mediachange = le_pci_mediachange;
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sc->sc_supmedia = le_pci_supmedia;
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sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int);
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sc->sc_defaultmedia = le_pci_supmedia[0];
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}
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/*
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* Extract the physical MAC address from the ROM.
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*/
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bus_read_region_1(lesc->sc_rres, 0, sc->sc_enaddr,
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sizeof(sc->sc_enaddr));
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sc->sc_copytodesc = lance_copytobuf_contig;
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sc->sc_copyfromdesc = lance_copyfrombuf_contig;
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sc->sc_copytobuf = lance_copytobuf_contig;
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sc->sc_copyfrombuf = lance_copyfrombuf_contig;
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sc->sc_zerobuf = lance_zerobuf_contig;
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sc->sc_rdcsr = le_pci_rdcsr;
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sc->sc_wrcsr = le_pci_wrcsr;
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sc->sc_hwreset = le_pci_hwreset;
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sc->sc_hwinit = NULL;
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sc->sc_hwintr = NULL;
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sc->sc_nocarrier = NULL;
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error = am79900_config(&lesc->sc_am79900, device_get_name(dev),
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device_get_unit(dev));
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if (error != 0) {
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device_printf(dev, "cannot attach Am79900\n");
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goto fail_dmap;
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}
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error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE,
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NULL, am79900_intr, sc, &lesc->sc_ih);
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if (error != 0) {
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device_printf(dev, "cannot set up interrupt\n");
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goto fail_am79900;
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}
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return (0);
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fail_am79900:
|
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am79900_detach(&lesc->sc_am79900);
|
|
fail_dmap:
|
|
bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
|
|
fail_dmem:
|
|
bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
|
|
fail_dtag:
|
|
bus_dma_tag_destroy(lesc->sc_dmat);
|
|
fail_pdtag:
|
|
bus_dma_tag_destroy(lesc->sc_pdmat);
|
|
fail_ires:
|
|
bus_release_resource(dev, SYS_RES_IRQ,
|
|
rman_get_rid(lesc->sc_ires), lesc->sc_ires);
|
|
fail_rres:
|
|
bus_release_resource(dev, SYS_RES_IOPORT,
|
|
rman_get_rid(lesc->sc_rres), lesc->sc_rres);
|
|
fail_mtx:
|
|
LE_LOCK_DESTROY(sc);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
le_pci_detach(device_t dev)
|
|
{
|
|
struct le_pci_softc *lesc;
|
|
struct lance_softc *sc;
|
|
|
|
lesc = device_get_softc(dev);
|
|
sc = &lesc->sc_am79900.lsc;
|
|
|
|
bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih);
|
|
am79900_detach(&lesc->sc_am79900);
|
|
bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
|
|
bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
|
|
bus_dma_tag_destroy(lesc->sc_dmat);
|
|
bus_dma_tag_destroy(lesc->sc_pdmat);
|
|
bus_release_resource(dev, SYS_RES_IRQ,
|
|
rman_get_rid(lesc->sc_ires), lesc->sc_ires);
|
|
bus_release_resource(dev, SYS_RES_IOPORT,
|
|
rman_get_rid(lesc->sc_rres), lesc->sc_rres);
|
|
LE_LOCK_DESTROY(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
le_pci_suspend(device_t dev)
|
|
{
|
|
struct le_pci_softc *lesc;
|
|
|
|
lesc = device_get_softc(dev);
|
|
|
|
lance_suspend(&lesc->sc_am79900.lsc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
le_pci_resume(device_t dev)
|
|
{
|
|
struct le_pci_softc *lesc;
|
|
|
|
lesc = device_get_softc(dev);
|
|
|
|
lance_resume(&lesc->sc_am79900.lsc);
|
|
|
|
return (0);
|
|
}
|