416 lines
11 KiB
C
416 lines
11 KiB
C
/* $NetBSD: if_re_cardbus.c,v 1.8 2006/09/07 02:40:32 dogcow Exp $ */
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/*
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* Copyright (c) 2004 Jonathan Stone
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. 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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* if_re_cardbus.c:
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* Cardbus specific routines for Realtek 8169 ethernet adapter.
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* Tested for :
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* Netgear GA-511 (8169S)
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* Buffalo LPC-CB-CLGT
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_re_cardbus.c,v 1.8 2006/09/07 02:40:32 dogcow Exp $");
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#include "opt_inet.h"
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#include "bpfilter.h"
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#include "rnd.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/device.h>
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#include <sys/sockio.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 <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_ether.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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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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#if NBPFILTER > 0
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#include <net/bpf.h>
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#endif
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#if NRND > 0
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#include <sys/rnd.h>
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#endif
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#include <machine/bus.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/cardbus/cardbusvar.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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/*
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* Default to using PIO access for this driver. On SMP systems,
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* there appear to be problems with memory mapped mode: it looks like
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* doing too many memory mapped access back to back in rapid succession
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* can hang the bus. I'm inclined to blame this on crummy design/construction
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* on the part of Realtek. Memory mapped mode does appear to work on
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* uniprocessor systems though.
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*/
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#define RTK_USEIOSPACE
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#include <dev/ic/rtl81x9reg.h>
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#include <dev/ic/rtl81x9var.h>
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#include <dev/ic/rtl8169var.h>
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/*
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* Various supported device vendors/types and their names.
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*/
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static const struct rtk_type re_cardbus_devs[] = {
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{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169,
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RTK_8169, "Realtek 10/100/1000baseT" },
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{ 0, 0, 0, NULL }
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};
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static int re_cardbus_match(struct device *, struct cfdata *, void *);
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static void re_cardbus_attach(struct device *, struct device *, void *);
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static int re_cardbus_detach(struct device *, int);
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struct re_cardbus_softc {
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struct rtk_softc sc_rtk; /* real rtk softc */
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/* CardBus-specific goo. */
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void *sc_ih;
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cardbus_devfunc_t sc_ct;
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cardbustag_t sc_tag;
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int sc_csr;
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int sc_cben;
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int sc_bar_reg;
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pcireg_t sc_bar_val;
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bus_size_t sc_mapsize;
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int sc_intrline;
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};
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CFATTACH_DECL(re_cardbus, sizeof(struct re_cardbus_softc),
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re_cardbus_match, re_cardbus_attach, re_cardbus_detach, re_activate);
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const struct rtk_type *re_cardbus_lookup(const struct cardbus_attach_args *);
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void re_cardbus_setup(struct re_cardbus_softc *);
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int re_cardbus_enable(struct rtk_softc *);
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void re_cardbus_disable(struct rtk_softc *);
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void re_cardbus_power(struct rtk_softc *, int);
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const struct rtk_type *
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re_cardbus_lookup(const struct cardbus_attach_args *ca)
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{
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const struct rtk_type *t;
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for (t = re_cardbus_devs; t->rtk_name != NULL; t++) {
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if (CARDBUS_VENDOR(ca->ca_id) == t->rtk_vid &&
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CARDBUS_PRODUCT(ca->ca_id) == t->rtk_did) {
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return t;
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}
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}
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return NULL;
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}
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int
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re_cardbus_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct cardbus_attach_args *ca = aux;
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if (re_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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re_cardbus_attach(struct device *parent, struct device *self, void *aux)
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{
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struct re_cardbus_softc *csc = device_private(self);
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struct rtk_softc *sc = &csc->sc_rtk;
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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 rtk_type *t;
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bus_addr_t adr;
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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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csc->sc_intrline = ca->ca_intrline;
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t = re_cardbus_lookup(ca);
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if (t == NULL) {
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aprint_error("\n");
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panic("re_cardbus_attach: impossible");
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}
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aprint_normal(": %s\n", t->rtk_name);
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/*
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* Power management hooks.
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*/
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sc->sc_enable = re_cardbus_enable;
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sc->sc_disable = re_cardbus_disable;
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sc->sc_power = re_cardbus_power;
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/*
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* Map control/status registers.
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*/
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csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE;
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#ifdef RTK_USEIOSPACE
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if (Cardbus_mapreg_map(ct, RTK_PCI_LOIO, CARDBUS_MAPREG_TYPE_IO, 0,
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&sc->rtk_btag, &sc->rtk_bhandle, &adr, &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 |= CARDBUS_COMMAND_IO_ENABLE;
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csc->sc_bar_reg = RTK_PCI_LOIO;
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csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
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}
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#else
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if (Cardbus_mapreg_map(ct, RTK_PCI_LOMEM, CARDBUS_MAPREG_TYPE_MEM, 0,
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&sc->rtk_btag, &sc->rtk_bhandle, &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 |= CARDBUS_COMMAND_MEM_ENABLE;
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csc->sc_bar_reg = RTK_PCI_LOMEM;
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csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM;
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}
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#endif
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else {
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aprint_error("%s: unable to map deviceregisters\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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* Handle power management nonsense and initialize the
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* configuration registers.
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*/
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re_cardbus_setup(csc);
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sc->rtk_type = t->rtk_basetype;
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sc->sc_dmat = ca->ca_dmat;
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re_attach(sc);
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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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re_cardbus_detach(struct device *self, int flags)
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{
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struct re_cardbus_softc *csc = device_private(self);
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struct rtk_softc *sc = &csc->sc_rtk;
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struct cardbus_devfunc *ct = csc->sc_ct;
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int rv;
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#ifdef DIAGNOSTIC
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if (ct == NULL)
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panic("%s: cardbus softc, cardbus_devfunc NULL",
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sc->sc_dev.dv_xname);
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#endif
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rv = re_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->rtk_btag, sc->rtk_bhandle, csc->sc_mapsize);
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return 0;
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}
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void
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re_cardbus_setup(struct re_cardbus_softc *csc)
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{
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struct rtk_softc *sc = &csc->sc_rtk;
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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,command;
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int pmreg;
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/*
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* Handle power management nonsense.
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*/
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if (cardbus_get_capability(cc, cf, csc->sc_tag,
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PCI_CAP_PWRMGMT, &pmreg, 0)) {
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command = cardbus_conf_read(cc, cf, csc->sc_tag,
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pmreg + PCI_PMCSR);
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if (command & RTK_PSTATE_MASK) {
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pcireg_t iobase, membase, irq;
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/* Save important PCI config data. */
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iobase = cardbus_conf_read(cc, cf, csc->sc_tag,
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RTK_PCI_LOIO);
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membase = cardbus_conf_read(cc, cf,csc->sc_tag,
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RTK_PCI_LOMEM);
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irq = cardbus_conf_read(cc, cf,csc->sc_tag,
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CARDBUS_INTERRUPT_REG);
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/* Reset the power state. */
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aprint_normal("%s: chip is in D%d power mode "
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"-- setting to D0\n", sc->sc_dev.dv_xname,
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command & RTK_PSTATE_MASK);
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command &= ~RTK_PSTATE_MASK;
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cardbus_conf_write(cc, cf, csc->sc_tag,
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pmreg + PCI_PMCSR, command);
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/* Restore PCI config data. */
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cardbus_conf_write(cc, cf, csc->sc_tag,
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RTK_PCI_LOIO, iobase);
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cardbus_conf_write(cc, cf, csc->sc_tag,
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RTK_PCI_LOMEM, membase);
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cardbus_conf_write(cc, cf, csc->sc_tag,
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CARDBUS_INTERRUPT_REG, irq);
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}
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}
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/* Program the BAR */
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cardbus_conf_write(cc, cf, csc->sc_tag,
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csc->sc_bar_reg, csc->sc_bar_val);
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/* Make sure the right access type is on the CardBus bridge. */
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(*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
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(*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
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/* Enable the appropriate bits in the CARDBUS CSR. */
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reg = cardbus_conf_read(cc, cf, csc->sc_tag,
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CARDBUS_COMMAND_STATUS_REG);
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reg &= ~(CARDBUS_COMMAND_IO_ENABLE|CARDBUS_COMMAND_MEM_ENABLE);
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reg |= csc->sc_csr;
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cardbus_conf_write(cc, cf, csc->sc_tag,
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CARDBUS_COMMAND_STATUS_REG, reg);
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/*
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* Make sure the latency timer is set to some reasonable
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* value.
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*/
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reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG);
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if (CARDBUS_LATTIMER(reg) < 0x40) {
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reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
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reg |= (0x40 << CARDBUS_LATTIMER_SHIFT);
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cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg);
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}
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}
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int
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re_cardbus_enable(struct rtk_softc *sc)
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{
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struct re_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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re_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,
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IPL_NET, re_intr, sc);
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if (csc->sc_ih == NULL) {
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aprint_error("%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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aprint_normal("%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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re_cardbus_disable(struct rtk_softc *sc)
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{
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struct re_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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re_cardbus_power(struct rtk_softc *sc, int why)
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{
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struct re_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 (RTK_IS_ENABLED(sc) == 0)
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panic("re_cardbus_power");
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#endif
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re_cardbus_setup(csc);
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}
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}
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