351 lines
11 KiB
C
351 lines
11 KiB
C
/* $NetBSD: if_le_pci.c,v 1.53 2018/12/09 11:14:02 jdolecek 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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*
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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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__KERNEL_RCSID(0, "$NetBSD: if_le_pci.c,v 1.53 2018/12/09 11:14:02 jdolecek 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/syslog.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <sys/cpu.h>
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#include <sys/bus.h>
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#include <sys/intr.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/pci/pcidevs.h>
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#include <dev/ic/lancereg.h>
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#include <dev/ic/lancevar.h>
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#include <dev/ic/am79900reg.h>
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#include <dev/ic/am79900var.h>
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#include <dev/pci/if_levar.h>
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static int le_pci_match(device_t, cfdata_t, void *);
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static void le_pci_attach(device_t, device_t, void *);
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static int le_pci_mediachange(struct lance_softc *);
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CFATTACH_DECL_NEW(le_pci, sizeof(struct le_softc),
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le_pci_match, le_pci_attach, NULL, NULL);
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/*
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* PCI constants.
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* XXX These should be in a common file!
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*/
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#define PCI_CBIO PCI_BAR(0) /* Configuration Base IO Address */
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#define LE_PCI_MEMSIZE 16384
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static int le_pci_supmedia[] = {
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IFM_ETHER|IFM_AUTO,
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IFM_ETHER|IFM_AUTO|IFM_FDX,
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IFM_ETHER|IFM_10_T,
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IFM_ETHER|IFM_10_T|IFM_FDX,
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IFM_ETHER|IFM_10_5,
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IFM_ETHER|IFM_10_5|IFM_FDX,
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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_softc *lesc = (struct le_softc *)sc;
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bus_space_tag_t iot = lesc->sc_iot;
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bus_space_handle_t ioh = lesc->sc_ioh;
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bus_space_write_2(iot, ioh, lesc->sc_rap, port);
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bus_space_write_2(iot, ioh, lesc->sc_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_softc *lesc = (struct le_softc *)sc;
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bus_space_tag_t iot = lesc->sc_iot;
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bus_space_handle_t ioh = lesc->sc_ioh;
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uint16_t val;
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bus_space_write_2(iot, ioh, lesc->sc_rap, port);
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val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
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return (val);
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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 le_softc *lesc = (struct le_softc *)sc;
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bus_space_tag_t iot = lesc->sc_iot;
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bus_space_handle_t ioh = lesc->sc_ioh;
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int newmedia = sc->sc_media.ifm_media;
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uint16_t reg;
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if (IFM_SUBTYPE(newmedia) !=
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IFM_SUBTYPE(lesc->sc_currentmedia)) {
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if (IFM_SUBTYPE(newmedia) == IFM_AUTO) {
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/* switch to autoselect - BCR2 bit 1 */
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bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
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reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP);
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reg |= 2;
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bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
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bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg);
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} else {
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/* force media type (in init block) */
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lance_reset(sc);
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if (IFM_SUBTYPE(newmedia) == IFM_10_T)
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sc->sc_initmodemedia = 1; /* UTP */
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else
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sc->sc_initmodemedia = 0; /* AUI */
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lance_init(&sc->sc_ethercom.ec_if);
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if (IFM_SUBTYPE(lesc->sc_currentmedia) == IFM_AUTO) {
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/* take away autoselect - BCR2 bit 1 */
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bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
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reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP);
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reg &= ~2;
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bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
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bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg);
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}
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}
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}
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if ((IFM_OPTIONS(newmedia) ^ IFM_OPTIONS(lesc->sc_currentmedia))
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& IFM_FDX) {
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/* toggle full duplex - BCR9 */
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bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 9);
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reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP);
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if (IFM_OPTIONS(newmedia) & IFM_FDX) {
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reg |= 1; /* FDEN */
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/* allow FDX on AUI only if explicitly chosen,
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not in autoselect mode */
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if (IFM_SUBTYPE(newmedia) == IFM_10_5)
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reg |= 2; /* AUIFD */
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else
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reg &= ~2;
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} else
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reg &= ~1;
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bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 9);
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bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg);
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}
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lesc->sc_currentmedia = newmedia;
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return (0);
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}
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static int
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le_pci_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct pci_attach_args *pa = aux;
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if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_AMD)
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return (0);
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switch (PCI_PRODUCT(pa->pa_id)) {
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case PCI_PRODUCT_AMD_PCNET_PCI:
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return (1);
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}
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return (0);
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}
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static void
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le_pci_attach(device_t parent, device_t self, void *aux)
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{
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struct le_softc *lesc = device_private(self);
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struct lance_softc *sc = &lesc->sc_am79900.lsc;
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struct pci_attach_args *pa = aux;
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pci_intr_handle_t ih;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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bus_dma_tag_t dmat = pa->pa_dmat;
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bus_dma_segment_t seg;
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pci_chipset_tag_t pc = pa->pa_pc;
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pcireg_t csr;
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int i, rseg;
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const char *model, *intrstr;
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char intrbuf[PCI_INTRSTR_LEN];
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sc->sc_dev = self;
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switch (PCI_PRODUCT(pa->pa_id)) {
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case PCI_PRODUCT_AMD_PCNET_PCI:
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model = "PCnet-PCI Ethernet";
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lesc->sc_rap = PCNET_PCI_RAP;
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lesc->sc_rdp = PCNET_PCI_RDP;
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break;
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default:
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model = "unknown model!";
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}
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aprint_normal(": %s\n", model);
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if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
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&iot, &ioh, NULL, NULL)) {
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aprint_error_dev(self, "can't map I/O space\n");
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return;
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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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for (i = 0; i < sizeof(sc->sc_enaddr); i++)
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sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i);
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lesc->sc_iot = iot;
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lesc->sc_ioh = ioh;
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lesc->sc_dmat = dmat;
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/*
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* Allocate a DMA area for the card.
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*/
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if (bus_dmamem_alloc(dmat, LE_PCI_MEMSIZE, PAGE_SIZE, 0, &seg, 1,
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&rseg, BUS_DMA_NOWAIT)) {
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aprint_error_dev(self, "couldn't allocate memory for card\n");
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return;
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}
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if (bus_dmamem_map(dmat, &seg, rseg, LE_PCI_MEMSIZE,
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(void **)&sc->sc_mem,
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BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
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aprint_error_dev(self, "couldn't map memory for card\n");
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return;
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}
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/*
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* Create and load the DMA map for the DMA area.
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*/
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if (bus_dmamap_create(dmat, LE_PCI_MEMSIZE, 1,
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LE_PCI_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) {
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aprint_error_dev(self, "couldn't create DMA map\n");
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bus_dmamem_free(dmat, &seg, rseg);
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return;
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}
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if (bus_dmamap_load(dmat, lesc->sc_dmam,
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sc->sc_mem, LE_PCI_MEMSIZE, NULL, BUS_DMA_NOWAIT)) {
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aprint_error_dev(self, "coundn't load DMA map\n");
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bus_dmamem_free(dmat, &seg, rseg);
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return;
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}
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sc->sc_conf3 = 0;
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sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr;
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sc->sc_memsize = LE_PCI_MEMSIZE;
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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_hwinit = NULL;
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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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sc->sc_mediachange = le_pci_mediachange;
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lesc->sc_currentmedia = le_pci_supmedia[0];
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aprint_normal("%s", device_xname(self));
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am79900_config(&lesc->sc_am79900);
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/* Chip is stopped. Set "software style" to 32-bit. */
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bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 20);
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bus_space_write_2(iot, ioh, PCNET_PCI_BDP, 2);
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/* Enable the card. */
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csr = pci_conf_read(pc, pa->pa_tag,
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PCI_COMMAND_STATUS_REG);
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pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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csr | PCI_COMMAND_MASTER_ENABLE);
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/* Map and establish the interrupt. */
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if (pci_intr_map(pa, &ih)) {
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aprint_error_dev(self, "couldn't map interrupt\n");
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return;
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}
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intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
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lesc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_NET, am79900_intr,
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sc, device_xname(self));
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if (lesc->sc_ih == NULL) {
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aprint_error_dev(self, "couldn't establish interrupt");
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if (intrstr != NULL)
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aprint_error(" at %s", intrstr);
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aprint_error("\n");
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return;
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}
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aprint_normal_dev(self, "interrupting at %s\n", intrstr);
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}
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