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/* $OpenBSD: if_le_fwio.c,v 1.2 2008/10/22 23:04:45 mpf Exp $ */
/*
* Copyright (c) 2008 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*-
* 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 "bpfilter.h"
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <uvm/uvm_extern.h>
#include <net/if.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#endif
#include <netinet/if_ether.h>
#include <vax/mbus/mbusreg.h>
#include <vax/mbus/mbusvar.h>
#include <vax/mbus/fwioreg.h>
#include <vax/mbus/fwiovar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
struct le_fwio_softc {
struct am7990_softc sc_am7990;
volatile uint16_t *sc_rap;
volatile uint16_t *sc_rdp;
};
int le_fwio_match(struct device *, void *, void *);
void le_fwio_attach(struct device *, struct device *, void *);
struct cfattach le_fwio_ca = {
sizeof(struct le_fwio_softc), le_fwio_match, le_fwio_attach
};
int le_fwio_intr(void *);
uint16_t le_fwio_rdcsr(struct am7990_softc *, uint16_t);
void le_fwio_wrcsr(struct am7990_softc *, uint16_t, uint16_t);
void le_fwio_wrcsr_interrupt(struct am7990_softc *, uint16_t, uint16_t);
int
le_fwio_match(struct device *parent, void *vcf, void *aux)
{
struct fwio_attach_args *faa = (struct fwio_attach_args *)aux;
return strcmp(faa->faa_dev, le_cd.cd_name) == 0 ? 1 : 0;
}
void
le_fwio_attach(struct device *parent, struct device *self, void *aux)
{
struct fwio_attach_args *faa = (struct fwio_attach_args *)aux;
struct le_fwio_softc *sc = (struct le_fwio_softc *)self;
unsigned int vec;
uint32_t *esar;
int i;
vec = faa->faa_vecbase + FBIC_DEVIRQ1 * 4;
printf(" vec %d", vec);
/*
* Map registers.
*/
sc->sc_rdp = (volatile uint16_t *)
vax_map_physmem(faa->faa_base + FWIO_LANCE_REG_OFFSET, 1);
sc->sc_rap = sc->sc_rdp + 2;
/*
* Register access functions.
*/
sc->sc_am7990.sc_rdcsr = le_fwio_rdcsr;
sc->sc_am7990.sc_wrcsr = le_fwio_wrcsr;
/*
* Map buffers.
*/
sc->sc_am7990.sc_mem =
(void *)uvm_km_valloc(kernel_map, FWIO_LANCE_BUF_SIZE);
if (sc->sc_am7990.sc_mem == NULL) {
vax_unmap_physmem(faa->faa_base + FWIO_LANCE_REG_OFFSET, 1);
printf(": can't map buffers\n");
return;
}
ioaccess((vaddr_t)sc->sc_am7990.sc_mem, faa->faa_base +
FWIO_LANCE_BUF_OFFSET, FWIO_LANCE_BUF_SIZE >> VAX_PGSHIFT);
sc->sc_am7990.sc_addr = FWIO_LANCE_BUF_OFFSET;
sc->sc_am7990.sc_memsize = FWIO_LANCE_BUF_SIZE;
sc->sc_am7990.sc_conf3 = 0;
sc->sc_am7990.sc_copytodesc = am7990_copytobuf_contig;
sc->sc_am7990.sc_copyfromdesc = am7990_copyfrombuf_contig;
sc->sc_am7990.sc_copytobuf = am7990_copytobuf_contig;
sc->sc_am7990.sc_copyfrombuf = am7990_copyfrombuf_contig;
sc->sc_am7990.sc_zerobuf = am7990_zerobuf_contig;
/*
* Get the Ethernet address from the Station Address ROM.
*/
esar = (uint32_t *)vax_map_physmem(faa->faa_base + FWIO_ESAR_OFFSET, 1);
for (i = 0; i < 6; i++)
sc->sc_am7990.sc_arpcom.ac_enaddr[i] =
(esar[i] & FWIO_ESAR_MASK) >> FWIO_ESAR_SHIFT;
vax_unmap_physmem((vaddr_t)esar, 1);
bcopy(self->dv_xname, sc->sc_am7990.sc_arpcom.ac_if.if_xname, IFNAMSIZ);
/*
* Register interrupt handler.
*/
if (mbus_intr_establish(vec, IPL_NET, le_fwio_intr, sc,
self->dv_xname) != 0) {
vax_unmap_physmem(faa->faa_base + FWIO_LANCE_REG_OFFSET, 1);
uvm_km_free(kernel_map, (vaddr_t)sc->sc_am7990.sc_mem,
FWIO_LANCE_BUF_SIZE);
printf(": can't establish interrupt\n");
return;
}
/*
* Complete attachment.
*/
am7990_config(&sc->sc_am7990);
}
int
le_fwio_intr(void *v)
{
struct le_fwio_softc *lsc = (struct le_fwio_softc *)v;
int rc;
/*
* FBIC expects edge interrupts, while the LANCE does level
* interrupts. To avoid missing interrupts while servicing,
* we disable further device interrupts while servicing.
*
* However, am7990_intr() will flip the interrupt enable bit
* itself; we override wrcsr with a specific version during
* servicing, so as not to reenable interrupts accidentally...
*/
lsc->sc_am7990.sc_wrcsr = le_fwio_wrcsr_interrupt;
rc = am7990_intr(v);
lsc->sc_am7990.sc_wrcsr = le_fwio_wrcsr;
/*
* ...but we should not forget to reenable interrupts at this point!
*/
le_fwio_wrcsr(&lsc->sc_am7990, LE_CSR0, LE_C0_INEA |
le_fwio_rdcsr(&lsc->sc_am7990, LE_CSR0));
return rc;
}
uint16_t
le_fwio_rdcsr(struct am7990_softc *sc, uint16_t port)
{
struct le_fwio_softc *lsc = (struct le_fwio_softc *)sc;
*lsc->sc_rap = port;
return *lsc->sc_rdp;
}
void
le_fwio_wrcsr(struct am7990_softc *sc, uint16_t port, uint16_t val)
{
struct le_fwio_softc *lsc = (struct le_fwio_softc *)sc;
*lsc->sc_rap = port;
*lsc->sc_rdp = val;
}
void
le_fwio_wrcsr_interrupt(struct am7990_softc *sc, uint16_t port, uint16_t val)
{
if (port == LE_CSR0)
val &= ~LE_C0_INEA;
le_fwio_wrcsr(sc, port, val);
}
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