freebsd-dev/sys/dev/hme/if_hme_sbus.c
Pyun YongHyeon 38fa13a6a2 Make hme(4) mpsafe
- Let hme_start()/hme_init() acquire lock and then call
   hme_start_locked()/hme_init_locked() respectivly.
 - Teardown interrupt handler before hme_detach().
 - Remove IFF_NEEDSGIANT flag and mark interrupt handler INTR_MPSAFE.
 - Set callout handler to CALLOUT_MPSAFE.
 - Add locks in hme MII interface.

Reviewed by:	jake
Tested by:	Julian C. Dunn  <jdunn at opentrend dot net>
MFC after:	2 weeks
2004-11-22 06:46:30 +00:00

346 lines
9.8 KiB
C

/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 THE FOUNDATION OR CONTRIBUTORS
* 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.
*
* from: NetBSD: if_hme_sbus.c,v 1.19 2004/03/17 17:04:58 pk Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* SBus front-end device driver for the HME ethernet device.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <dev/ofw/ofw_bus.h>
#include <machine/bus.h>
#include <machine/ofw_machdep.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <sparc64/sbus/sbusvar.h>
#include <dev/hme/if_hmereg.h>
#include <dev/hme/if_hmevar.h>
#include "miibus_if.h"
struct hme_sbus_softc {
struct hme_softc hsc_hme; /* HME device */
struct resource *hsc_seb_res;
int hsc_seb_rid;
struct resource *hsc_etx_res;
int hsc_etx_rid;
struct resource *hsc_erx_res;
int hsc_erx_rid;
struct resource *hsc_mac_res;
int hsc_mac_rid;
struct resource *hsc_mif_res;
int hsc_mif_rid;
struct resource *hsc_ires;
int hsc_irid;
void *hsc_ih;
};
static int hme_sbus_probe(device_t);
static int hme_sbus_attach(device_t);
static int hme_sbus_detach(device_t);
static int hme_sbus_suspend(device_t);
static int hme_sbus_resume(device_t);
static device_method_t hme_sbus_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, hme_sbus_probe),
DEVMETHOD(device_attach, hme_sbus_attach),
DEVMETHOD(device_detach, hme_sbus_detach),
DEVMETHOD(device_suspend, hme_sbus_suspend),
DEVMETHOD(device_resume, hme_sbus_resume),
/* Can just use the suspend method here. */
DEVMETHOD(device_shutdown, hme_sbus_suspend),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
/* MII interface */
DEVMETHOD(miibus_readreg, hme_mii_readreg),
DEVMETHOD(miibus_writereg, hme_mii_writereg),
DEVMETHOD(miibus_statchg, hme_mii_statchg),
{ 0, 0 }
};
static driver_t hme_sbus_driver = {
"hme",
hme_sbus_methods,
sizeof(struct hme_sbus_softc)
};
DRIVER_MODULE(hme, sbus, hme_sbus_driver, hme_devclass, 0, 0);
MODULE_DEPEND(hme, ether, 1, 1, 1);
static int
hme_sbus_probe(device_t dev)
{
const char *name;
name = ofw_bus_get_name(dev);
if (strcmp(name, "SUNW,qfe") == 0 ||
strcmp(name, "SUNW,hme") == 0) {
device_set_desc(dev, "Sun HME 10/100 Ethernet");
return (0);
}
return (ENXIO);
}
static int
hme_sbus_attach(device_t dev)
{
struct hme_sbus_softc *hsc = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
u_int32_t burst;
u_long start, count;
int error = 0;
mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF);
/*
* Map five register banks:
*
* bank 0: HME SEB registers
* bank 1: HME ETX registers
* bank 2: HME ERX registers
* bank 3: HME MAC registers
* bank 4: HME MIF registers
*
*/
hsc->hsc_seb_rid = 0;
hsc->hsc_seb_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&hsc->hsc_seb_rid, RF_ACTIVE);
if (hsc->hsc_seb_res == NULL) {
device_printf(dev, "cannot map SEB registers\n");
error = ENXIO;
goto fail_mtx_res;
}
sc->sc_sebt = rman_get_bustag(hsc->hsc_seb_res);
sc->sc_sebh = rman_get_bushandle(hsc->hsc_seb_res);
hsc->hsc_etx_rid = 1;
hsc->hsc_etx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&hsc->hsc_etx_rid, RF_ACTIVE);
if (hsc->hsc_etx_res == NULL) {
device_printf(dev, "cannot map ETX registers\n");
error = ENXIO;
goto fail_seb_res;
}
sc->sc_etxt = rman_get_bustag(hsc->hsc_etx_res);
sc->sc_etxh = rman_get_bushandle(hsc->hsc_etx_res);
hsc->hsc_erx_rid = 2;
hsc->hsc_erx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&hsc->hsc_erx_rid, RF_ACTIVE);
if (hsc->hsc_erx_res == NULL) {
device_printf(dev, "cannot map ERX registers\n");
error = ENXIO;
goto fail_etx_res;
}
sc->sc_erxt = rman_get_bustag(hsc->hsc_erx_res);
sc->sc_erxh = rman_get_bushandle(hsc->hsc_erx_res);
hsc->hsc_mac_rid = 3;
hsc->hsc_mac_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&hsc->hsc_mac_rid, RF_ACTIVE);
if (hsc->hsc_mac_res == NULL) {
device_printf(dev, "cannot map MAC registers\n");
error = ENXIO;
goto fail_erx_res;
}
sc->sc_mact = rman_get_bustag(hsc->hsc_mac_res);
sc->sc_mach = rman_get_bushandle(hsc->hsc_mac_res);
/*
* At least on some HMEs, the MIF registers seem to be inside the MAC
* range, so try to kludge around it.
*/
hsc->hsc_mif_rid = 4;
hsc->hsc_mif_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&hsc->hsc_mif_rid, RF_ACTIVE);
if (hsc->hsc_mif_res == NULL) {
if (bus_get_resource(dev, SYS_RES_MEMORY, hsc->hsc_mif_rid,
&start, &count) != 0) {
device_printf(dev, "cannot get MIF registers\n");
error = ENXIO;
goto fail_mac_res;
}
if (start < rman_get_start(hsc->hsc_mac_res) ||
start + count - 1 > rman_get_end(hsc->hsc_mac_res)) {
device_printf(dev, "cannot move MIF registers to MAC "
"bank\n");
error = ENXIO;
goto fail_mac_res;
}
sc->sc_mift = sc->sc_mact;
bus_space_subregion(sc->sc_mact, sc->sc_mach,
start - rman_get_start(hsc->hsc_mac_res), count,
&sc->sc_mifh);
} else {
sc->sc_mift = rman_get_bustag(hsc->hsc_mif_res);
sc->sc_mifh = rman_get_bushandle(hsc->hsc_mif_res);
}
hsc->hsc_irid = 0;
hsc->hsc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&hsc->hsc_irid, RF_SHAREABLE | RF_ACTIVE);
if (hsc->hsc_ires == NULL) {
device_printf(dev, "could not allocate interrupt\n");
error = ENXIO;
goto fail_mif_res;
}
OF_getetheraddr(dev, sc->sc_arpcom.ac_enaddr);
burst = sbus_get_burstsz(dev);
/* Translate into plain numerical format */
if ((burst & SBUS_BURST_64))
sc->sc_burst = 64;
else if ((burst & SBUS_BURST_32))
sc->sc_burst = 32;
else if ((burst & SBUS_BURST_16))
sc->sc_burst = 16;
else
sc->sc_burst = 0;
sc->sc_pci = 0; /* XXX: should all be done in bus_dma. */
sc->sc_dev = dev;
if ((error = hme_config(sc)) != 0) {
device_printf(dev, "could not be configured\n");
goto fail_ires;
}
if ((error = bus_setup_intr(dev, hsc->hsc_ires, INTR_TYPE_NET |
INTR_MPSAFE, hme_intr, sc, &hsc->hsc_ih)) != 0) {
device_printf(dev, "couldn't establish interrupt\n");
hme_detach(sc);
goto fail_ires;
}
return (0);
fail_ires:
bus_release_resource(dev, SYS_RES_IRQ, hsc->hsc_irid, hsc->hsc_ires);
fail_mif_res:
if (hsc->hsc_mif_res != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_mif_rid,
hsc->hsc_mif_res);
}
fail_mac_res:
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_mac_rid,
hsc->hsc_mac_res);
fail_erx_res:
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_erx_rid,
hsc->hsc_erx_res);
fail_etx_res:
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_etx_rid,
hsc->hsc_etx_res);
fail_seb_res:
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_seb_rid,
hsc->hsc_seb_res);
fail_mtx_res:
mtx_destroy(&sc->sc_lock);
return (error);
}
static int
hme_sbus_detach(device_t dev)
{
struct hme_sbus_softc *hsc = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
bus_teardown_intr(dev, hsc->hsc_ires, hsc->hsc_ih);
hme_detach(sc);
if (hsc->hsc_mif_res != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_mif_rid,
hsc->hsc_mif_res);
}
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_mac_rid,
hsc->hsc_mac_res);
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_erx_rid,
hsc->hsc_erx_res);
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_etx_rid,
hsc->hsc_etx_res);
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_seb_rid,
hsc->hsc_seb_res);
mtx_destroy(&sc->sc_lock);
return (0);
}
static int
hme_sbus_suspend(device_t dev)
{
struct hme_sbus_softc *hsc = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
hme_suspend(sc);
return (0);
}
static int
hme_sbus_resume(device_t dev)
{
struct hme_sbus_softc *hsc = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
hme_resume(sc);
return (0);
}