273 lines
8.2 KiB
C
273 lines
8.2 KiB
C
/* $NetBSD: if_rtk_pci.c,v 1.46 2015/05/09 21:53:45 christos Exp $ */
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/*
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* Copyright (c) 1997, 1998
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* Bill Paul <wpaul@ctr.columbia.edu>. 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. 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 Bill Paul.
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* 4. Neither the name of the author nor the names of any co-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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* FreeBSD Id: if_rl.c,v 1.17 1999/06/19 20:17:37 wpaul Exp
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*/
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/*
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* Realtek 8129/8139 PCI NIC driver
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*
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* Supports several extremely cheap PCI 10/100 adapters based on
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* the Realtek chipset. Datasheets can be obtained from
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* www.realtek.com.tw.
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*
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* Written by Bill Paul <wpaul@ctr.columbia.edu>
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* Electrical Engineering Department
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* Columbia University, New York City
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_rtk_pci.c,v 1.46 2015/05/09 21:53:45 christos Exp $");
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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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#include <sys/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/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/ic/rtl81x9reg.h>
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#include <dev/ic/rtl81x9var.h>
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struct rtk_pci_softc {
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struct rtk_softc sc_rtk; /* real rtk softc */
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/* PCI-specific goo.*/
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void *sc_ih;
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pci_chipset_tag_t sc_pc;
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};
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static const struct rtk_type rtk_pci_devs[] = {
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{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129,
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RTK_8129, "Realtek 8129 10/100BaseTX" },
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{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139,
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RTK_8139, "Realtek 8139 10/100BaseTX" },
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{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8138,
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RTK_8139, "Realtek 8138 10/100BaseTX" },
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{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139D,
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RTK_8139, "Realtek 8139D 10/100BaseTX" },
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{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8100,
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RTK_8139, "Realtek 8100 10/100BaseTX" },
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{ PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_MPX5030,
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RTK_8139, "Accton MPX 5030/5038 10/100BaseTX" },
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{ PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139,
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RTK_8139, "Delta Electronics 8139 10/100BaseTX" },
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{ PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139,
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RTK_8139, "Addtron Technology 8139 10/100BaseTX" },
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{ PCI_VENDOR_SEGA, PCI_PRODUCT_SEGA_BROADBAND,
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RTK_8139, "SEGA Broadband Adapter" },
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{ PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE520TX,
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RTK_8139, "D-Link Systems DFE 520TX" },
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{ PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS,
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RTK_8139, "D-Link Systems DFE 530TX+" },
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{ PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BAYSTACK_21,
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RTK_8139, "Baystack 21 (MPX EN5038) 10/100BaseTX" },
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};
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static int rtk_pci_match(device_t, cfdata_t, void *);
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static void rtk_pci_attach(device_t, device_t, void *);
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static int rtk_pci_detach(device_t, int);
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CFATTACH_DECL_NEW(rtk_pci, sizeof(struct rtk_pci_softc),
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rtk_pci_match, rtk_pci_attach, rtk_pci_detach, NULL);
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static const struct rtk_type *
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rtk_pci_lookup(const struct pci_attach_args *pa)
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{
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int i;
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for (i = 0; i < __arraycount(rtk_pci_devs); i++) {
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if (PCI_VENDOR(pa->pa_id) != rtk_pci_devs[i].rtk_vid)
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continue;
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if (PCI_PRODUCT(pa->pa_id) == rtk_pci_devs[i].rtk_did)
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return &rtk_pci_devs[i];
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}
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return NULL;
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}
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static int
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rtk_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 (rtk_pci_lookup(pa) != NULL)
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return 1;
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return 0;
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}
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/*
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* Attach the interface. Allocate softc structures, do ifmedia
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* setup and ethernet/BPF attach.
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*/
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static void
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rtk_pci_attach(device_t parent, device_t self, void *aux)
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{
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struct rtk_pci_softc *psc = device_private(self);
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struct rtk_softc *sc = &psc->sc_rtk;
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struct pci_attach_args *pa = aux;
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pci_chipset_tag_t pc = pa->pa_pc;
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pci_intr_handle_t ih;
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bus_space_tag_t iot, memt;
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bus_space_handle_t ioh, memh;
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bus_size_t iosize, memsize;
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pcireg_t csr;
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const char *intrstr = NULL;
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const struct rtk_type *t;
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bool ioh_valid, memh_valid;
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char intrbuf[PCI_INTRSTR_LEN];
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sc->sc_dev = self;
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psc->sc_pc = pa->pa_pc;
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t = rtk_pci_lookup(pa);
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KASSERT(t != NULL);
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pci_aprint_devinfo_fancy(pa, NULL, t->rtk_name, 1);
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/*
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* Map control/status registers.
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*
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* The original FreeBSD's driver has the following comment:
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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:
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* it looks like doing too many memory mapped access
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* back to back in rapid succession can hang the bus.
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* 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
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* work on uniprocessor systems though.
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*
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* On NetBSD, some ports don't support PCI I/O space properly,
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* so we try to map both and prefer I/O space to mem space.
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*/
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ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
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&iot, &ioh, NULL, &iosize) == 0);
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memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
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&memt, &memh, NULL, &memsize) == 0);
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if (ioh_valid) {
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sc->rtk_btag = iot;
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sc->rtk_bhandle = ioh;
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sc->rtk_bsize = iosize;
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if (memh_valid)
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bus_space_unmap(memt, memh, memsize);
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} else if (memh_valid) {
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sc->rtk_btag = memt;
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sc->rtk_bhandle = memh;
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sc->rtk_bsize = memsize;
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} else {
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aprint_error_dev(self, "can't map registers\n");
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return;
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}
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/* Allocate 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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psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc);
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if (psc->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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if (t->rtk_basetype == RTK_8129)
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sc->sc_quirk |= RTKQ_8129;
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aprint_normal_dev(self, "interrupting at %s\n", intrstr);
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csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
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csr |= PCI_COMMAND_MASTER_ENABLE;
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pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr);
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sc->sc_dmat = pa->pa_dmat;
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sc->sc_flags |= RTK_ENABLED;
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if (pmf_device_register(self, NULL, NULL))
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pmf_class_network_register(self, &sc->ethercom.ec_if);
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else
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aprint_error_dev(self, "couldn't establish power handler\n");
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rtk_attach(sc);
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}
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static int
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rtk_pci_detach(device_t self, int flags)
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{
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struct rtk_pci_softc *psc = device_private(self);
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struct rtk_softc *sc = &psc->sc_rtk;
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int rv;
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/* rtk_stop() */
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sc->ethercom.ec_if.if_stop(&sc->ethercom.ec_if, 0);
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rv = rtk_detach(sc);
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if (rv)
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return rv;
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if (psc->sc_ih != NULL) {
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pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
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psc->sc_ih = NULL;
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}
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if (sc->rtk_bsize != 0) {
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bus_space_unmap(sc->rtk_btag, sc->rtk_bhandle, sc->rtk_bsize);
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sc->rtk_bsize = 0;
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}
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return 0;
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}
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