FreeBSD-5.3/sys/dev/lnc/if_lnc_isa.c
/*
* Copyright (c) 1994-2000
* Paul Richards. 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,
* verbatim and that no modifications are made prior to this
* point in the file.
* 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. The name Paul Richards may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``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 PAUL RICHARDS 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/lnc/if_lnc_isa.c,v 1.18 2004/05/30 20:08:35 phk Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <isa/isavar.h>
#include <dev/lnc/if_lncvar.h>
#include <dev/lnc/if_lncreg.h>
static struct isa_pnp_id lnc_pnp_ids[] = {
{0, NULL}
};
static int
lnc_legacy_probe(device_t dev)
{
struct lnc_softc *sc = device_get_softc(dev);
sc->portrid = 0;
sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
RF_ACTIVE);
if (! sc->portres) {
device_printf(dev, "Failed to allocate I/O ports\n");
lnc_release_resources(dev);
return (ENXIO);
}
sc->lnc_btag = rman_get_bustag(sc->portres);
sc->lnc_bhandle = rman_get_bushandle(sc->portres);
/*
* There isn't any way to determine if a NIC is a BICC. Basically, if
* the lance probe succeeds using the i/o addresses of the BICC then
* we assume it's a BICC.
*
*/
sc->rap = BICC_RAP;
sc->rdp = BICC_RDP;
sc->nic.mem_mode = DMA_FIXED;
/* XXX Should set BICC_IOSIZE et al somewhere to alloc
resources correctly */
if ((sc->nic.ic = lance_probe(sc))) {
device_set_desc(dev, "BICC Isolan");
sc->nic.ident = BICC;
lnc_release_resources(dev);
return (0);
} else {
/* It's not a BICC so try the standard NE2100 ports */
sc->rap = PCNET_RAP;
sc->rdp = PCNET_RDP;
if ((sc->nic.ic = lance_probe(sc))) {
sc->nic.ident = NE2100;
device_set_desc(dev, "NE2100");
lnc_release_resources(dev);
return (0);
} else {
lnc_release_resources(dev);
return (ENXIO);
}
}
}
static int
lnc_isa_probe(device_t dev)
{
int pnp;
pnp = ISA_PNP_PROBE(device_get_parent(dev), dev, lnc_pnp_ids);
if (pnp == ENOENT) {
/* It's not a PNP card, see if we support it by probing it */
return (lnc_legacy_probe(dev));
} else if (pnp == ENXIO) {
return (ENXIO);
} else {
/* Found PNP card we support */
return (0);
}
}
static void
lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
{
/* Do nothing */
return;
}
static int
lnc_isa_attach(device_t dev)
{
lnc_softc_t *sc = device_get_softc(dev);
int err = 0;
bus_size_t lnc_mem_size;
device_printf(dev, "Attaching %s\n", device_get_desc(dev));
sc->portrid = 0;
sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
RF_ACTIVE);
if (! sc->portres) {
device_printf(dev, "Failed to allocate I/O ports\n");
lnc_release_resources(dev);
return (ENXIO);
}
sc->drqrid = 0;
sc->drqres = bus_alloc_resource_any(dev, SYS_RES_DRQ, &sc->drqrid,
RF_ACTIVE);
if (! sc->drqres) {
device_printf(dev, "Failed to allocate DMA channel\n");
lnc_release_resources(dev);
return (ENXIO);
}
if (isa_get_irq(dev) == -1)
bus_set_resource(dev, SYS_RES_IRQ, 0, 10, 1);
sc->irqrid = 0;
sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
RF_ACTIVE);
if (! sc->irqres) {
device_printf(dev, "Failed to allocate irq\n");
lnc_release_resources(dev);
return (ENXIO);
}
err = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
sc, &sc->intrhand);
if (err) {
device_printf(dev, "Failed to setup irq handler\n");
lnc_release_resources(dev);
return (err);
}
/* XXX temp setting for nic */
sc->nic.mem_mode = DMA_FIXED;
sc->nrdre = NRDRE;
sc->ntdre = NTDRE;
if (sc->nic.ident == NE2100) {
sc->rap = PCNET_RAP;
sc->rdp = PCNET_RDP;
sc->bdp = PCNET_BDP;
} else {
sc->rap = BICC_RAP;
sc->rdp = BICC_RDP;
}
/* Create a DMA tag describing the ring memory we need */
lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
sizeof(struct host_ring_entry));
lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
(NDESC(sc->ntdre) * TRANSBUFSIZE);
err = bus_dma_tag_create(NULL, /* parent */
4, /* alignement */
0, /* boundary */
BUS_SPACE_MAXADDR_24BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
lnc_mem_size, /* segsize */
1, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
busdma_lock_mutex, /* lockfunc */
&Giant, /* lockarg */
&sc->dmat);
if (err) {
device_printf(dev, "Can't create DMA tag\n");
lnc_release_resources(dev);
return (ENOMEM);
}
err = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
BUS_DMA_NOWAIT, &sc->dmamap);
if (err) {
device_printf(dev, "Couldn't allocate memory\n");
lnc_release_resources(dev);
return (ENOMEM);
}
err = bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, lnc_mem_size,
lnc_alloc_callback, sc->recv_ring, BUS_DMA_NOWAIT);
if (err) {
device_printf(dev, "Couldn't load DMA map\n");
lnc_release_resources(dev);
return (ENOMEM);
}
isa_dmacascade(rman_get_start(sc->drqres));
/* Call generic attach code */
if (! lnc_attach_common(dev)) {
device_printf(dev, "Generic attach code failed\n");
lnc_release_resources(dev);
return (ENXIO);
}
return (0);
}
static int
lnc_isa_detach(device_t dev)
{
lnc_softc_t *sc = device_get_softc(dev);
int s = splimp();
ether_ifdetach(&sc->arpcom.ac_if);
splx(s);
lnc_stop(sc);
lnc_release_resources(dev);
return (0);
}
static device_method_t lnc_isa_methods[] = {
/* DEVMETHOD(device_identify, lnc_isa_identify), */
DEVMETHOD(device_probe, lnc_isa_probe),
DEVMETHOD(device_attach, lnc_isa_attach),
DEVMETHOD(device_detach, lnc_isa_detach),
#ifdef notyet
DEVMETHOD(device_suspend, lnc_isa_suspend),
DEVMETHOD(device_resume, lnc_isa_resume),
DEVMETHOD(device_shutdown, lnc_isa_shutdown),
#endif
{ 0, 0 }
};
static driver_t lnc_isa_driver = {
"lnc",
lnc_isa_methods,
sizeof(struct lnc_softc),
};
DRIVER_MODULE(lnc, isa, lnc_isa_driver, lnc_devclass, 0, 0);
MODULE_DEPEND(lnc, isa, 1, 1, 1);
MODULE_DEPEND(lnc, ether, 1, 1, 1);