574 lines
14 KiB
C
574 lines
14 KiB
C
/* $NetBSD: if_tlp_cardbus.c,v 1.22 2000/03/22 01:35:14 thorpej Exp $ */
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/*-
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* Copyright (c) 1999, 2000 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 Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* 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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* CardBus bus front-end for the Digital Semiconductor ``Tulip'' (21x4x)
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* Ethernet controller family driver.
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*/
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#include "opt_inet.h"
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#include "opt_ns.h"
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.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/device.h>
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#include <machine/endian.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_ether.h>
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#if NBPFILTER > 0
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#include <net/bpf.h>
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#endif
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_inarp.h>
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#endif
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#ifdef NS
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/mii/miivar.h>
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#include <dev/mii/mii_bitbang.h>
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#include <dev/ic/tulipreg.h>
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#include <dev/ic/tulipvar.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/cardbus/cardbusvar.h>
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/*
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* PCI configuration space registers used by the Tulip.
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*/
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#define TULIP_PCI_IOBA 0x10 /* i/o mapped base */
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#define TULIP_PCI_MMBA 0x14 /* memory mapped base */
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#define TULIP_PCI_CFDA 0x40 /* configuration driver area */
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#define CFDA_SLEEP 0x80000000 /* sleep mode */
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#define CFDA_SNOOZE 0x40000000 /* snooze mode */
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struct tulip_cardbus_softc {
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struct tulip_softc sc_tulip; /* real Tulip softc */
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/* CardBus-specific goo. */
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void *sc_ih; /* interrupt handle */
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cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */
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cardbustag_t sc_tag; /* our CardBus tag */
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int sc_csr; /* CSR bits */
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bus_size_t sc_mapsize; /* the size of mapped bus space
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region */
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/* product info */
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const struct tulip_cardbus_product *sc_product;
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int sc_cben; /* CardBus enables */
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int sc_bar_reg; /* which BAR to use */
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pcireg_t sc_bar_val; /* value of the BAR */
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int sc_intrline; /* interrupt line */
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};
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int tlp_cardbus_match __P((struct device *, struct cfdata *, void *));
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void tlp_cardbus_attach __P((struct device *, struct device *, void *));
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int tlp_cardbus_detach __P((struct device *, int));
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struct cfattach tlp_cardbus_ca = {
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sizeof(struct tulip_cardbus_softc),
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tlp_cardbus_match, tlp_cardbus_attach,
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tlp_cardbus_detach, tlp_activate,
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};
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const struct tulip_cardbus_product {
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u_int32_t tcp_vendor; /* PCI vendor ID */
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u_int32_t tcp_product; /* PCI product ID */
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tulip_chip_t tcp_chip; /* base Tulip chip type */
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int tcp_pmreg; /* power management register offset */
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} tlp_cardbus_products[] = {
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{ PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21142,
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TULIP_CHIP_21142, 0xe0 },
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{ PCI_VENDOR_XIRCOM, PCI_PRODUCT_XIRCOM_X3201_3_21143,
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TULIP_CHIP_X3201_3, 0xe0 },
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{ 0, 0,
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TULIP_CHIP_INVALID, 0 },
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};
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void tlp_cardbus_setup __P((struct tulip_cardbus_softc *));
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int tlp_cardbus_enable __P((struct tulip_softc *));
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void tlp_cardbus_disable __P((struct tulip_softc *));
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void tlp_cardbus_power __P((struct tulip_softc *, int));
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void tlp_cardbus_x3201_reset __P((struct tulip_softc *));
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const struct tulip_cardbus_product *tlp_cardbus_lookup
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__P((const struct cardbus_attach_args *));
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const struct tulip_cardbus_product *
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tlp_cardbus_lookup(ca)
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const struct cardbus_attach_args *ca;
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{
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const struct tulip_cardbus_product *tcp;
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for (tcp = tlp_cardbus_products;
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tlp_chip_names[tcp->tcp_chip] != NULL;
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tcp++) {
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if (PCI_VENDOR(ca->ca_id) == tcp->tcp_vendor &&
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PCI_PRODUCT(ca->ca_id) == tcp->tcp_product)
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return (tcp);
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}
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return (NULL);
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}
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int
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tlp_cardbus_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct cardbus_attach_args *ca = aux;
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if (tlp_cardbus_lookup(ca) != NULL)
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return (1);
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return (0);
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}
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void
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tlp_cardbus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct tulip_cardbus_softc *csc = (void *)self;
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struct tulip_softc *sc = &csc->sc_tulip;
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struct cardbus_attach_args *ca = aux;
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cardbus_devfunc_t ct = ca->ca_ct;
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const struct tulip_cardbus_product *tcp;
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u_int8_t enaddr[ETHER_ADDR_LEN];
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bus_addr_t adr;
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sc->sc_devno = ca->ca_device;
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sc->sc_dmat = ca->ca_dmat;
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csc->sc_ct = ct;
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csc->sc_tag = ca->ca_tag;
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tcp = tlp_cardbus_lookup(ca);
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if (tcp == NULL) {
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printf("\n");
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panic("tlp_cardbus_attach: impossible");
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}
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sc->sc_chip = tcp->tcp_chip;
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csc->sc_product = tcp;
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/*
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* By default, Tulip registers are 8 bytes long (4 bytes
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* followed by a 4 byte pad).
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*/
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sc->sc_regshift = 3;
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/*
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* Power management hooks.
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*/
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sc->sc_enable = tlp_cardbus_enable;
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sc->sc_disable = tlp_cardbus_disable;
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sc->sc_power = tlp_cardbus_power;
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/*
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* Get revision info, and set some chip-specific variables.
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*/
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sc->sc_rev = PCI_REVISION(ca->ca_class);
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switch (sc->sc_chip) {
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case TULIP_CHIP_21142:
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if (sc->sc_rev >= 0x20)
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sc->sc_chip = TULIP_CHIP_21143;
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break;
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default:
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/* Nothing. */
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}
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printf(": %s Ethernet, pass %d.%d\n",
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tlp_chip_names[sc->sc_chip],
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(sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf);
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/*
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* Map the device.
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*/
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csc->sc_csr = PCI_COMMAND_MASTER_ENABLE;
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if (Cardbus_mapreg_map(ct, TULIP_PCI_IOBA,
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PCI_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, &adr,
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&csc->sc_mapsize) == 0) {
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#if rbus
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#else
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(*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr+csc->sc_mapsize);
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#endif
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csc->sc_cben = CARDBUS_IO_ENABLE;
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csc->sc_csr |= PCI_COMMAND_IO_ENABLE;
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csc->sc_bar_reg = TULIP_PCI_IOBA;
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csc->sc_bar_val = adr | PCI_MAPREG_TYPE_IO;
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} else if (Cardbus_mapreg_map(ct, TULIP_PCI_MMBA,
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PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
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&sc->sc_st, &sc->sc_sh, &adr, &csc->sc_mapsize) == 0) {
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#if rbus
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#else
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(*ct->ct_cf->cardbus_mem_open)(cc, 0, adr, adr+csc->sc_mapsize);
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#endif
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csc->sc_cben = CARDBUS_MEM_ENABLE;
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csc->sc_csr |= PCI_COMMAND_MEM_ENABLE;
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csc->sc_bar_reg = TULIP_PCI_MMBA;
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csc->sc_bar_val = adr | PCI_MAPREG_TYPE_MEM;
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} else {
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printf("%s: unable to map device registers\n",
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sc->sc_dev.dv_xname);
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return;
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}
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/*
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* Bring the chip out of powersave mode and initialize the
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* configuration registers.
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*/
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tlp_cardbus_setup(csc);
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/*
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* Read the contents of the Ethernet Address ROM/SROM.
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*/
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switch (sc->sc_chip) {
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case TULIP_CHIP_X3201_3:
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/*
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* No SROM on this chip.
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*/
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break;
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default:
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if (tlp_read_srom(sc) == 0)
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goto cant_cope;
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break;
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}
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/*
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* Deal with chip/board quirks. This includes setting up
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* the mediasw, and extracting the Ethernet address from
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* the rombuf.
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*/
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switch (sc->sc_chip) {
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case TULIP_CHIP_21142:
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case TULIP_CHIP_21143:
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/* Check for new format SROM. */
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if (tlp_isv_srom_enaddr(sc, enaddr) == 0) {
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/*
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* Not an ISV SROM; try the old DEC Ethernet Address
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* ROM format.
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*/
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if (tlp_parse_old_srom(sc, enaddr) == 0)
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goto cant_cope;
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} else {
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/*
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* We start out with the 2114x ISV media switch.
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* When we search for quirks, we may change to
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* a different switch.
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*/
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sc->sc_mediasw = &tlp_2114x_isv_mediasw;
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}
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/*
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* Bail out now if we can't deal with this board.
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*/
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if (sc->sc_mediasw == NULL)
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goto cant_cope;
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break;
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case TULIP_CHIP_X3201_3:
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/*
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* The X3201 doesn't have an SROM. Lift the MAC address
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* from the CIS. Also, we have a special media switch:
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* MII-on-SIO, plus some special GPIO setup.
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*/
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memcpy(enaddr, ca->ca_cis.funce.network.netid, sizeof(enaddr));
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sc->sc_reset = tlp_cardbus_x3201_reset;
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sc->sc_mediasw = &tlp_sio_mii_mediasw;
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break;
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default:
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cant_cope:
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printf("%s: sorry, unable to handle your board\n",
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sc->sc_dev.dv_xname);
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return;
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}
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/* Remember which interrupt line. */
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csc->sc_intrline = ca->ca_intrline;
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/*
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* Finish off the attach.
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*/
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tlp_attach(sc, enaddr);
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/*
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* Power down the socket.
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*/
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Cardbus_function_disable(csc->sc_ct);
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}
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int
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tlp_cardbus_detach(self, flags)
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struct device *self;
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int flags;
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{
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struct tulip_cardbus_softc *csc = (void *)self;
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struct tulip_softc *sc = &csc->sc_tulip;
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struct cardbus_devfunc *ct = csc->sc_ct;
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int rv;
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#if defined(DIAGNOSTIC)
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if (ct == NULL)
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panic("%s: data structure lacks\n", sc->sc_dev.dv_xname);
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#endif
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rv = tlp_detach(sc);
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if (rv)
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return (rv);
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/*
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* Unhook the interrupt handler.
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*/
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if (csc->sc_ih != NULL)
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cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
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/*
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* Release bus space and close window.
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*/
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if (csc->sc_bar_reg != 0)
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Cardbus_mapreg_unmap(ct, csc->sc_bar_reg,
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sc->sc_st, sc->sc_sh, csc->sc_mapsize);
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return (0);
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}
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int
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tlp_cardbus_enable(sc)
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struct tulip_softc *sc;
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{
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struct tulip_cardbus_softc *csc = (void *) sc;
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cardbus_devfunc_t ct = csc->sc_ct;
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cardbus_chipset_tag_t cc = ct->ct_cc;
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cardbus_function_tag_t cf = ct->ct_cf;
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/*
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* Power on the socket.
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*/
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Cardbus_function_enable(ct);
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/*
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* Set up the PCI configuration registers.
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*/
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tlp_cardbus_setup(csc);
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/*
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* Map and establish the interrupt.
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*/
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csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
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tlp_intr, sc);
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if (csc->sc_ih == NULL) {
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printf("%s: unable to establish interrupt at %d\n",
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sc->sc_dev.dv_xname, csc->sc_intrline);
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Cardbus_function_disable(csc->sc_ct);
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return (1);
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}
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printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname,
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csc->sc_intrline);
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return (0);
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}
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void
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tlp_cardbus_disable(sc)
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struct tulip_softc *sc;
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{
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struct tulip_cardbus_softc *csc = (void *) sc;
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cardbus_devfunc_t ct = csc->sc_ct;
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cardbus_chipset_tag_t cc = ct->ct_cc;
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cardbus_function_tag_t cf = ct->ct_cf;
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/* Unhook the interrupt handler. */
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cardbus_intr_disestablish(cc, cf, csc->sc_ih);
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csc->sc_ih = NULL;
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/* Power down the socket. */
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Cardbus_function_disable(ct);
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}
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void
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tlp_cardbus_power(sc, why)
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struct tulip_softc *sc;
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int why;
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{
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struct tulip_cardbus_softc *csc = (void *) sc;
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if (why == PWR_RESUME) {
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/*
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* Give the PCI configuration registers a kick
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* in the head.
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*/
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#ifdef DIAGNOSTIC
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if (TULIP_IS_ENABLED(sc) == 0)
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panic("tlp_cardbus_power");
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#endif
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tlp_cardbus_setup(csc);
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}
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}
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void
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tlp_cardbus_setup(csc)
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struct tulip_cardbus_softc *csc;
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{
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struct tulip_softc *sc = &csc->sc_tulip;
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const struct tulip_cardbus_product *tcp = csc->sc_product;
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cardbus_devfunc_t ct = csc->sc_ct;
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cardbus_chipset_tag_t cc = ct->ct_cc;
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cardbus_function_tag_t cf = ct->ct_cf;
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pcireg_t reg;
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/*
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* Check to see if the device is in power-save mode, and
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* bring it out if necessary.
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*/
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switch (sc->sc_chip) {
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case TULIP_CHIP_21142:
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case TULIP_CHIP_21143:
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case TULIP_CHIP_X3201_3:
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/*
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* Clear the "sleep mode" bit in the CFDA register.
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*/
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reg = cardbus_conf_read(cc, cf, csc->sc_tag, TULIP_PCI_CFDA);
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if (reg & (CFDA_SLEEP|CFDA_SNOOZE))
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cardbus_conf_write(cc, cf, csc->sc_tag, TULIP_PCI_CFDA,
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reg & ~(CFDA_SLEEP|CFDA_SNOOZE));
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break;
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default:
|
|
/* Nothing. */
|
|
}
|
|
|
|
if (cardbus_get_capability(cc, cf, csc->sc_tag,
|
|
PCI_CAP_PWRMGMT, 0, 0)) {
|
|
if (tcp->tcp_pmreg == 0) {
|
|
printf("%s: don't know location of PMCSR for this "
|
|
"chip\n", sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
reg = cardbus_conf_read(cc, cf, csc->sc_tag,
|
|
tcp->tcp_pmreg) & 0x03;
|
|
#if 1 /* XXX Probably not right for CardBus. */
|
|
if (reg == 3) {
|
|
/*
|
|
* The card has lost all configuration data in
|
|
* this state, so punt.
|
|
*/
|
|
printf("%s: unable to wake up from power state D3\n",
|
|
sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
#endif
|
|
if (reg != 0) {
|
|
printf("%s: waking up from power state D%d\n",
|
|
sc->sc_dev.dv_xname, reg);
|
|
cardbus_conf_write(cc, cf, csc->sc_tag,
|
|
tcp->tcp_pmreg, 0);
|
|
}
|
|
}
|
|
|
|
/* Make sure the right access type is on the CardBus bridge. */
|
|
(*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
|
|
(*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
|
|
|
|
/* Program the BAR. */
|
|
cardbus_conf_write(cc, cf, csc->sc_tag, csc->sc_bar_reg,
|
|
csc->sc_bar_val);
|
|
|
|
/* Enable the appropriate bits in the PCI CSR. */
|
|
reg = cardbus_conf_read(cc, cf, csc->sc_tag, PCI_COMMAND_STATUS_REG);
|
|
reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE);
|
|
reg |= csc->sc_csr;
|
|
cardbus_conf_write(cc, cf, csc->sc_tag, PCI_COMMAND_STATUS_REG, reg);
|
|
|
|
/*
|
|
* Make sure the latency timer is set to some reasonable
|
|
* value.
|
|
*/
|
|
reg = cardbus_conf_read(cc, cf, csc->sc_tag, PCI_BHLC_REG);
|
|
if (PCI_LATTIMER(reg) < 0x20) {
|
|
reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
|
|
reg |= (0x20 << PCI_LATTIMER_SHIFT);
|
|
cardbus_conf_write(cc, cf, csc->sc_tag, PCI_BHLC_REG, reg);
|
|
}
|
|
}
|
|
|
|
void
|
|
tlp_cardbus_x3201_reset(sc)
|
|
struct tulip_softc *sc;
|
|
{
|
|
u_int32_t reg;
|
|
|
|
reg = TULIP_READ(sc, CSR_SIAGEN);
|
|
|
|
/* make GP[2,0] outputs */
|
|
TULIP_WRITE(sc, CSR_SIAGEN, (reg & ~SIAGEN_MD) | SIAGEN_CWE |
|
|
0x00050000);
|
|
TULIP_WRITE(sc, CSR_SIAGEN, (reg & ~SIAGEN_CWE) | SIAGEN_MD);
|
|
}
|