NetBSD-5.0.2/sys/dev/isa/if_le_isa.c
/* $NetBSD: if_le_isa.c,v 1.47 2008/04/28 20:23:52 martin Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
* Simulation Facility, NASA Ames Research Center.
*
* 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.
*
* 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.
*/
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)if_le.c 8.2 (Berkeley) 11/16/93
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_le_isa.c,v 1.47 2008/04/28 20:23:52 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <sys/cpu.h>
#include <sys/intr.h>
#include <sys/bus.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
#include <dev/isa/if_levar.h>
int ne2100_isa_probe(device_t, cfdata_t, void *);
int bicc_isa_probe(device_t, cfdata_t, void *);
void le_dummyattach(device_t, device_t, void *);
int le_dummyprobe(device_t, cfdata_t, void *);
void le_ne2100_attach(device_t, device_t, void *);
void le_bicc_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(nele, 0,
ne2100_isa_probe, le_dummyattach, NULL, NULL);
CFATTACH_DECL_NEW(le_nele, sizeof(struct le_softc),
le_dummyprobe, le_ne2100_attach, NULL, NULL);
CFATTACH_DECL_NEW(bicc, 0,
bicc_isa_probe, le_dummyattach, NULL, NULL);
CFATTACH_DECL_NEW(le_bicc, sizeof(struct le_softc),
le_dummyprobe, le_bicc_attach, NULL, NULL);
struct le_isa_params {
const char *name;
int iosize, rap, rdp;
int macstart, macstride;
} ne2100_params = {
"NE2100",
24, NE2100_RAP, NE2100_RDP,
0, 1
}, bicc_params = {
"BICC Isolan",
16, BICC_RAP, BICC_RDP,
0, 2
};
int lance_isa_probe(struct isa_attach_args *, struct le_isa_params *, int);
void le_isa_attach(struct device *, struct le_softc *,
struct isa_attach_args *, struct le_isa_params *);
int le_isa_intredge(void *);
#if defined(_KERNEL_OPT)
#include "opt_ddb.h"
#endif
#ifdef DDB
#define integrate
#define hide
#else
#define integrate static inline
#define hide static
#endif
hide void le_isa_wrcsr(struct lance_softc *, uint16_t, uint16_t);
hide uint16_t le_isa_rdcsr(struct lance_softc *, uint16_t);
#define LE_ISA_MEMSIZE 16384
hide void
le_isa_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
bus_space_write_2(iot, ioh, lesc->sc_rap, port);
bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
}
hide uint16_t
le_isa_rdcsr(struct lance_softc *sc, uint16_t port)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
uint16_t val;
bus_space_write_2(iot, ioh, lesc->sc_rap, port);
val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
return (val);
}
int
ne2100_isa_probe(device_t parent, cfdata_t cf, void *aux)
{
return (lance_isa_probe(aux, &ne2100_params, cf->cf_flags));
}
int
bicc_isa_probe(device_t parent, cfdata_t cf, void *aux)
{
return (lance_isa_probe(aux, &bicc_params, cf->cf_flags));
}
/*
* Determine which chip is present on the card.
*/
int
lance_isa_probe(struct isa_attach_args *ia, struct le_isa_params *p, int flags)
{
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
int rap, rdp;
int rv = 0;
if (ia->ia_nio < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);
if (ia->ia_ndrq < 1)
return (0);
if (ISA_DIRECT_CONFIG(ia))
return (0);
/* Disallow wildcarded i/o address. */
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
return (0);
if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
return (0);
if ((flags & LANCEISA_FLAG_LOCALBUS) == 0 &&
ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ)
return (0);
/* Map i/o space. */
if (bus_space_map(iot, ia->ia_io[0].ir_addr, p->iosize, 0, &ioh))
return (0);
rap = p->rap;
rdp = p->rdp;
/* Stop the LANCE chip and put it in a known state. */
bus_space_write_2(iot, ioh, rap, LE_CSR0);
bus_space_write_2(iot, ioh, rdp, LE_C0_STOP);
delay(100);
bus_space_write_2(iot, ioh, rap, LE_CSR0);
if (bus_space_read_2(iot, ioh, rdp) != LE_C0_STOP)
goto bad;
bus_space_write_2(iot, ioh, rap, LE_CSR3);
bus_space_write_2(iot, ioh, rdp, 0);
ia->ia_nio = 1;
ia->ia_io[0].ir_size = p->iosize;
ia->ia_nirq = 1;
if ((flags & LANCEISA_FLAG_LOCALBUS) != 0 &&
ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ)
ia->ia_ndrq = 0;
else
ia->ia_ndrq = 1;
ia->ia_niomem = 0;
rv = 1;
bad:
bus_space_unmap(iot, ioh, p->iosize);
return (rv);
}
void
le_dummyattach(device_t parent, device_t self, void *aux)
{
aprint_normal("\n");
config_found(self, aux, 0);
}
int
le_dummyprobe(device_t parent, cfdata_t cf, void *aux)
{
return (1);
}
void
le_ne2100_attach(device_t parent, device_t self, void *aux)
{
struct le_softc *lesc = device_private(self);
struct lance_softc *sc = &lesc->sc_am7990.lsc;
sc->sc_dev = self;
le_isa_attach(parent, lesc, aux, &ne2100_params);
}
void
le_bicc_attach(device_t parent, device_t self, void *aux)
{
struct le_softc *lesc = device_private(self);
struct lance_softc *sc = &lesc->sc_am7990.lsc;
sc->sc_dev = self;
le_isa_attach(parent, lesc, aux, &bicc_params);
}
void
le_isa_attach(struct device *parent, struct le_softc *lesc,
struct isa_attach_args *ia, struct le_isa_params *p)
{
struct lance_softc *sc = &lesc->sc_am7990.lsc;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
bus_dma_tag_t dmat = ia->ia_dmat;
bus_dma_segment_t seg;
int i, rseg, error;
aprint_normal(": %s Ethernet\n", p->name);
if (bus_space_map(iot, ia->ia_io[0].ir_addr, p->iosize, 0, &ioh))
panic("%s: can't map io", device_xname(sc->sc_dev));
/*
* Extract the physical MAC address from the ROM.
*/
for (i = 0; i < sizeof(sc->sc_enaddr); i++)
sc->sc_enaddr[i] =
bus_space_read_1(iot, ioh, p->macstart + i * p->macstride);
lesc->sc_iot = iot;
lesc->sc_ioh = ioh;
lesc->sc_dmat = dmat;
lesc->sc_rap = p->rap;
lesc->sc_rdp = p->rdp;
/*
* Allocate a DMA area for the card.
*/
if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, PAGE_SIZE, 0, &seg, 1,
&rseg, BUS_DMA_NOWAIT)) {
aprint_error_dev(sc->sc_dev,
"couldn't allocate memory for card\n");
return;
}
if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE,
(void **)&sc->sc_mem,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
aprint_error_dev(sc->sc_dev, "couldn't map memory for card\n");
return;
}
/*
* Create and load the DMA map for the DMA area.
*/
if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1,
LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) {
aprint_error_dev(sc->sc_dev, "couldn't create DMA map\n");
bus_dmamem_free(dmat, &seg, rseg);
return;
}
if (bus_dmamap_load(dmat, lesc->sc_dmam,
sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) {
aprint_error_dev(sc->sc_dev, "coundn't load DMA map\n");
bus_dmamem_free(dmat, &seg, rseg);
return;
}
sc->sc_conf3 = 0;
sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr;
sc->sc_memsize = LE_ISA_MEMSIZE;
sc->sc_copytodesc = lance_copytobuf_contig;
sc->sc_copyfromdesc = lance_copyfrombuf_contig;
sc->sc_copytobuf = lance_copytobuf_contig;
sc->sc_copyfrombuf = lance_copyfrombuf_contig;
sc->sc_zerobuf = lance_zerobuf_contig;
sc->sc_rdcsr = le_isa_rdcsr;
sc->sc_wrcsr = le_isa_wrcsr;
sc->sc_hwinit = NULL;
if (ia->ia_ndrq > 0) {
if ((error = isa_dmacascade(ia->ia_ic,
ia->ia_drq[0].ir_drq)) != 0) {
aprint_error_dev(sc->sc_dev,
"unable to cascade DRQ, error = %d\n", error);
return;
}
}
lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
IST_EDGE, IPL_NET, le_isa_intredge, sc);
aprint_normal("%s", device_xname(sc->sc_dev));
am7990_config(&lesc->sc_am7990);
}
/*
* Controller interrupt.
*/
int
le_isa_intredge(void *arg)
{
if (am7990_intr(arg) == 0)
return (0);
for (;;)
if (am7990_intr(arg) == 0)
return (1);
}