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NetBSD/sys/dev/pci/if_rtk_pci.c

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/* $NetBSD: if_rtk_pci.c,v 1.43 2012/01/30 19:41:20 drochner Exp $ */
/*
* Copyright (c) 1997, 1998
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* FreeBSD Id: if_rl.c,v 1.17 1999/06/19 20:17:37 wpaul Exp
*/
/*
* Realtek 8129/8139 PCI NIC driver
*
* Supports several extremely cheap PCI 10/100 adapters based on
* the Realtek chipset. Datasheets can be obtained from
* www.realtek.com.tw.
*
* Written by Bill Paul <wpaul@ctr.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_rtk_pci.c,v 1.43 2012/01/30 19:41:20 drochner Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/device.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_ether.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <sys/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/ic/rtl81x9reg.h>
#include <dev/ic/rtl81x9var.h>
struct rtk_pci_softc {
struct rtk_softc sc_rtk; /* real rtk softc */
/* PCI-specific goo.*/
void *sc_ih;
pci_chipset_tag_t sc_pc;
};
static const struct rtk_type rtk_pci_devs[] = {
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129,
RTK_8129, "Realtek 8129 10/100BaseTX" },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139,
RTK_8139, "Realtek 8139 10/100BaseTX" },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8138,
RTK_8139, "Realtek 8138 10/100BaseTX" },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139D,
RTK_8139, "Realtek 8139D 10/100BaseTX" },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8100,
RTK_8139, "Realtek 8100 10/100BaseTX" },
{ PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_MPX5030,
RTK_8139, "Accton MPX 5030/5038 10/100BaseTX" },
{ PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139,
RTK_8139, "Delta Electronics 8139 10/100BaseTX" },
{ PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139,
RTK_8139, "Addtron Technology 8139 10/100BaseTX" },
{ PCI_VENDOR_SEGA, PCI_PRODUCT_SEGA_BROADBAND,
RTK_8139, "SEGA Broadband Adapter" },
{ PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS,
RTK_8139, "D-Link Systems DFE 530TX+" },
{ PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BAYSTACK_21,
RTK_8139, "Baystack 21 (MPX EN5038) 10/100BaseTX" },
};
static int rtk_pci_match(device_t, cfdata_t, void *);
static void rtk_pci_attach(device_t, device_t, void *);
static int rtk_pci_detach(device_t, int);
CFATTACH_DECL_NEW(rtk_pci, sizeof(struct rtk_pci_softc),
rtk_pci_match, rtk_pci_attach, rtk_pci_detach, NULL);
static const struct rtk_type *
rtk_pci_lookup(const struct pci_attach_args *pa)
{
int i;
for (i = 0; i < __arraycount(rtk_pci_devs); i++) {
if (PCI_VENDOR(pa->pa_id) != rtk_pci_devs[i].rtk_vid)
continue;
if (PCI_PRODUCT(pa->pa_id) == rtk_pci_devs[i].rtk_did)
return &rtk_pci_devs[i];
}
return NULL;
}
static int
rtk_pci_match(device_t parent, cfdata_t cf, void *aux)
{
struct pci_attach_args *pa = aux;
if (rtk_pci_lookup(pa) != NULL)
return 1;
return 0;
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static void
rtk_pci_attach(device_t parent, device_t self, void *aux)
{
struct rtk_pci_softc *psc = device_private(self);
struct rtk_softc *sc = &psc->sc_rtk;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh;
bus_size_t iosize, memsize;
pcireg_t csr;
const char *intrstr = NULL;
const struct rtk_type *t;
bool ioh_valid, memh_valid;
sc->sc_dev = self;
psc->sc_pc = pa->pa_pc;
t = rtk_pci_lookup(pa);
KASSERT(t != NULL);
pci_aprint_devinfo_fancy(pa, NULL, t->rtk_name, 1);
/*
* Map control/status registers.
*
* The original FreeBSD's driver has the following comment:
*
* Default to using PIO access for this driver. On SMP systems,
* there appear to be problems with memory mapped mode:
* it looks like doing too many memory mapped access
* back to back in rapid succession can hang the bus.
* I'm inclined to blame this on crummy design/construction
* on the part of Realtek. Memory mapped mode does appear to
* work on uniprocessor systems though.
*
* On NetBSD, some ports don't support PCI I/O space properly,
* so we try to map both and prefer I/O space to mem space.
*/
ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
&iot, &ioh, NULL, &iosize) == 0);
memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
&memt, &memh, NULL, &memsize) == 0);
if (ioh_valid) {
sc->rtk_btag = iot;
sc->rtk_bhandle = ioh;
sc->rtk_bsize = iosize;
if (memh_valid)
bus_space_unmap(memt, memh, memsize);
} else if (memh_valid) {
sc->rtk_btag = memt;
sc->rtk_bhandle = memh;
sc->rtk_bsize = memsize;
} else {
aprint_error_dev(self, "can't map registers\n");
return;
}
/* Allocate interrupt */
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(self, "couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc);
if (psc->sc_ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
}
if (t->rtk_basetype == RTK_8129)
sc->sc_quirk |= RTKQ_8129;
aprint_normal_dev(self, "interrupting at %s\n", intrstr);
csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
csr |= PCI_COMMAND_MASTER_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr);
sc->sc_dmat = pa->pa_dmat;
sc->sc_flags |= RTK_ENABLED;
if (pmf_device_register(self, NULL, NULL))
pmf_class_network_register(self, &sc->ethercom.ec_if);
else
aprint_error_dev(self, "couldn't establish power handler\n");
rtk_attach(sc);
}
static int
rtk_pci_detach(device_t self, int flags)
{
struct rtk_pci_softc *psc = device_private(self);
struct rtk_softc *sc = &psc->sc_rtk;
int rv;
/* rtk_stop() */
sc->ethercom.ec_if.if_stop(&sc->ethercom.ec_if, 0);
rv = rtk_detach(sc);
if (rv)
return rv;
if (psc->sc_ih != NULL) {
pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
psc->sc_ih = NULL;
}
if (sc->rtk_bsize != 0) {
bus_space_unmap(sc->rtk_btag, sc->rtk_bhandle, sc->rtk_bsize);
sc->rtk_bsize = 0;
}
return 0;
}
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