/* $NetBSD: if_le_obio.c,v 1.28 2019/04/25 10:08:45 msaitoh 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; Jason R. Thorpe of the Numerical Aerospace
* Simulation Facility, NASA Ames Research Center; 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.
*
* 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_le_obio.c,v 1.28 2019/04/25 10:08:45 msaitoh Exp $");
#include <sys/param.h>
#include <sys/systm.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/bus.h>
#include <machine/intr.h>
#include <machine/autoconf.h>
#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
/*
* LANCE registers.
*/
#define LEREG1_RDP 0 /* Register Data port */
#define LEREG1_RAP 2 /* Register Address port */
struct le_softc {
struct am7990_softc sc_am7990; /* glue to MI code */
bus_space_tag_t sc_bustag;
bus_dma_tag_t sc_dmatag;
bus_dmamap_t sc_dmamap;
bus_space_handle_t sc_reg; /* LANCE registers */
};
#define MEMSIZE 0x4000 /* LANCE memory size */
/*
* Media types supported.
*/
static int lemedia[] = {
IFM_ETHER | IFM_10_T,
};
#define NLEMEDIA __arraycount(lemedia)
static int lematch_obio(device_t, cfdata_t, void *);
static void leattach_obio(device_t, device_t, void *);
CFATTACH_DECL_NEW(le_obio, sizeof(struct le_softc),
lematch_obio, leattach_obio, NULL, NULL);
static void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
static uint16_t lerdcsr(struct lance_softc *, uint16_t);
static void
lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_tag_t t = lesc->sc_bustag;
bus_space_handle_t h = lesc->sc_reg;
bus_space_write_2(t, h, LEREG1_RAP, port);
bus_space_write_2(t, h, LEREG1_RDP, val);
}
static uint16_t
lerdcsr(struct lance_softc *sc, uint16_t port)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_tag_t t = lesc->sc_bustag;
bus_space_handle_t h = lesc->sc_reg;
bus_space_write_2(t, h, LEREG1_RAP, port);
return bus_space_read_2(t, h, LEREG1_RDP);
}
static int
lematch_obio(device_t parent, cfdata_t cf, void *aux)
{
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba;
if (uoba->uoba_isobio4 == 0)
return 0;
oba = &uoba->uoba_oba4;
return bus_space_probe(oba->oba_bustag, oba->oba_paddr,
2, /* probe size */
0, /* offset */
0, /* flags */
NULL, NULL);
}
static void
leattach_obio(device_t parent, device_t self, void *aux)
{
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba = &uoba->uoba_oba4;
struct le_softc *lesc = device_private(self);
struct lance_softc *sc = &lesc->sc_am7990.lsc;
bus_dma_segment_t seg;
bus_dma_tag_t dmatag;
int rseg;
int error;
sc->sc_dev = self;
lesc->sc_bustag = oba->oba_bustag;
lesc->sc_dmatag = dmatag = oba->oba_dmatag;
if (bus_space_map(oba->oba_bustag, oba->oba_paddr,
2 * sizeof(uint16_t), 0, &lesc->sc_reg) != 0) {
aprint_error(": cannot map registers\n");
return;
}
/* Get a DMA handle */
if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0,
BUS_DMA_NOWAIT|BUS_DMA_24BIT, &lesc->sc_dmamap)) != 0) {
aprint_error(": DMA map create error %d\n", error);
return;
}
/* Allocate DMA buffer */
if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, PAGE_SIZE, 0,
&seg, 1, &rseg, BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) {
aprint_error(": DMA memory allocation error %d\n", error);
return;
}
/* Map DMA buffer into kernel space */
if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE,
(void **)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
aprint_error(": DMA memory map error %d\n", error);
bus_dmamem_free(lesc->sc_dmatag, &seg, rseg);
return;
}
/* Load DMA buffer */
if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap,
sc->sc_mem, MEMSIZE, NULL, BUS_DMA_NOWAIT)) != 0) {
aprint_error(": DMA buffer map load error %d\n", error);
bus_dmamem_unmap(dmatag, (void *)sc->sc_mem, MEMSIZE);
bus_dmamem_free(dmatag, &seg, rseg);
return;
}
sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff;
sc->sc_memsize = MEMSIZE;
sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
sc->sc_supmedia = lemedia;
sc->sc_nsupmedia = NLEMEDIA;
sc->sc_defaultmedia = lemedia[0];
prom_getether(0, sc->sc_enaddr);
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 = lerdcsr;
sc->sc_wrcsr = lewrcsr;
am7990_config(&lesc->sc_am7990);
/* Install interrupt */
(void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET,
am7990_intr, sc);
}