/* $OpenBSD: if_le_ledma.c,v 1.13 2007/05/31 17:23:14 sobrado Exp $ */
/* $NetBSD: if_le_ledma.c,v 1.14 2001/05/30 11:46:35 mrg 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.
* 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.
*/
#include "bpfilter.h"
#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 <sys/malloc.h>
#include <net/if.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/autoconf.h>
#include <dev/sbus/sbusvar.h>
#include <dev/ic/lsi64854reg.h>
#include <dev/ic/lsi64854var.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_dmamap_t sc_dmamap;
bus_space_handle_t sc_reg; /* LANCE registers */
struct lsi64854_softc *sc_dma; /* pointer to my dma */
u_int sc_laddr; /* LANCE DMA address */
};
#define MEMSIZE (16*1024) /* LANCE memory size */
#define LEDMA_BOUNDARY (16*1024*1024) /* must not cross 16MB boundary */
int lematch_ledma(struct device *, void *, void *);
void leattach_ledma(struct device *, struct device *, void *);
/*
* Media types supported by the Sun4m.
*/
void le_ledma_setutp(struct am7990_softc *);
void le_ledma_setaui(struct am7990_softc *);
int lemediachange(struct ifnet *);
void lemediastatus(struct ifnet *, struct ifmediareq *);
struct cfattach le_ledma_ca = {
sizeof(struct le_softc), lematch_ledma, leattach_ledma
};
void le_ledma_wrcsr(struct am7990_softc *, u_int16_t, u_int16_t);
u_int16_t le_ledma_rdcsr(struct am7990_softc *, u_int16_t);
void le_ledma_hwreset(struct am7990_softc *);
void le_ledma_hwinit(struct am7990_softc *);
void le_ledma_nocarrier(struct am7990_softc *);
void
le_ledma_wrcsr(struct am7990_softc *sc, u_int16_t port, u_int16_t val)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2,
BUS_SPACE_BARRIER_WRITE);
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, 2,
BUS_SPACE_BARRIER_WRITE);
#if defined(SUN4M)
/*
* We need to flush the SBus->MBus write buffers. This can most
* easily be accomplished by reading back the register that we
* just wrote (thanks to Chris Torek for this solution).
*/
if (CPU_ISSUN4M) {
volatile u_int16_t discard;
discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg,
LEREG1_RDP);
}
#endif
}
u_int16_t
le_ledma_rdcsr(struct am7990_softc *sc, u_int16_t port)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2,
BUS_SPACE_BARRIER_WRITE);
return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
}
void
le_ledma_setutp(struct am7990_softc *sc)
{
struct lsi64854_softc *dma = ((struct le_softc *)sc)->sc_dma;
u_int32_t csr;
csr = L64854_GCSR(dma);
csr |= E_TP_AUI;
L64854_SCSR(dma, csr);
delay(20000); /* must not touch le for 20ms */
}
void
le_ledma_setaui(struct am7990_softc *sc)
{
struct lsi64854_softc *dma = ((struct le_softc *)sc)->sc_dma;
u_int32_t csr;
csr = L64854_GCSR(dma);
csr &= ~E_TP_AUI;
L64854_SCSR(dma, csr);
delay(20000); /* must not touch le for 20ms */
}
int
lemediachange(struct ifnet *ifp)
{
struct am7990_softc *sc = ifp->if_softc;
struct ifmedia *ifm = &sc->sc_ifmedia;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
/*
* Switch to the selected media. If autoselect is
* set, we don't really have to do anything. We'll
* switch to the other media when we detect loss of
* carrier.
*/
switch (IFM_SUBTYPE(ifm->ifm_media)) {
case IFM_10_T:
le_ledma_setutp(sc);
break;
case IFM_10_5:
le_ledma_setaui(sc);
break;
case IFM_AUTO:
break;
default:
return (EINVAL);
}
return (0);
}
void
lemediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct am7990_softc *sc = ifp->if_softc;
struct lsi64854_softc *dma = ((struct le_softc *)sc)->sc_dma;
/*
* Notify the world which media we're currently using.
*/
if (L64854_GCSR(dma) & E_TP_AUI)
ifmr->ifm_active = IFM_ETHER|IFM_10_T;
else
ifmr->ifm_active = IFM_ETHER|IFM_10_5;
}
void
le_ledma_hwreset(struct am7990_softc *sc)
{
struct le_softc *lesc = (struct le_softc *)sc;
struct lsi64854_softc *dma = lesc->sc_dma;
u_int32_t csr;
u_int aui_bit;
/*
* Reset DMA channel.
*/
csr = L64854_GCSR(dma);
aui_bit = csr & E_TP_AUI;
DMA_RESET(dma);
/* Write bits 24-31 of Lance address */
bus_space_write_4(dma->sc_bustag, dma->sc_regs, L64854_REG_ENBAR,
lesc->sc_laddr & 0xff000000);
DMA_ENINTR(dma);
/*
* Disable E-cache invalidates on chip writes.
* Retain previous cable selection bit.
*/
csr = L64854_GCSR(dma);
csr |= (E_DSBL_WR_INVAL | aui_bit);
L64854_SCSR(dma, csr);
delay(20000); /* must not touch le for 20ms */
}
void
le_ledma_hwinit(struct am7990_softc *sc)
{
/*
* Make sure we're using the currently-enabled media type.
* XXX Actually, this is probably unnecessary, now.
*/
switch (IFM_SUBTYPE(sc->sc_ifmedia.ifm_cur->ifm_media)) {
case IFM_10_T:
le_ledma_setutp(sc);
break;
case IFM_10_5:
le_ledma_setaui(sc);
break;
}
}
void
le_ledma_nocarrier(struct am7990_softc *sc)
{
struct le_softc *lesc = (struct le_softc *)sc;
/*
* Check if the user has requested a certain cable type, and
* if so, honor that request.
*/
if (L64854_GCSR(lesc->sc_dma) & E_TP_AUI) {
switch (IFM_SUBTYPE(sc->sc_ifmedia.ifm_media)) {
case IFM_10_5:
case IFM_AUTO:
printf("%s: lost carrier on UTP port"
", switching to AUI port\n", sc->sc_dev.dv_xname);
le_ledma_setaui(sc);
}
} else {
switch (IFM_SUBTYPE(sc->sc_ifmedia.ifm_media)) {
case IFM_10_T:
case IFM_AUTO:
printf("%s: lost carrier on AUI port"
", switching to UTP port\n", sc->sc_dev.dv_xname);
le_ledma_setutp(sc);
}
}
}
int
lematch_ledma(struct device *parent, void *vcf, void *aux)
{
struct cfdata *cf = vcf;
struct sbus_attach_args *sa = aux;
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
}
void
leattach_ledma(struct device *parent, struct device *self, void *aux)
{
struct sbus_attach_args *sa = aux;
struct le_softc *lesc = (struct le_softc *)self;
struct lsi64854_softc *lsi = (struct lsi64854_softc *)parent;
struct am7990_softc *sc = &lesc->sc_am7990;
bus_dma_tag_t dmatag = sa->sa_dmatag;
bus_dma_segment_t seg;
int rseg, error;
/* XXX the following declarations should be elsewhere */
extern void myetheraddr(u_char *);
lesc->sc_bustag = sa->sa_bustag;
/* Establish link to `ledma' device */
lesc->sc_dma = lsi;
lesc->sc_dma->sc_client = lesc;
/* Map device registers */
if (sbus_bus_map(sa->sa_bustag,
sa->sa_slot,
sa->sa_offset,
sa->sa_size,
BUS_SPACE_MAP_LINEAR,
0, &lesc->sc_reg) != 0) {
printf("%s @ ledma: cannot map registers\n", self->dv_xname);
return;
}
/* Allocate buffer memory */
sc->sc_memsize = MEMSIZE;
/* Get a DMA handle */
if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE,
LEDMA_BOUNDARY, BUS_DMA_NOWAIT,
&lesc->sc_dmamap)) != 0) {
printf("%s: DMA map create error %d\n", self->dv_xname, error);
return;
}
/* Allocate DMA buffer */
if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, 0, LEDMA_BOUNDARY,
&seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) {
printf("%s @ ledma: DMA buffer alloc error %d\n",
self->dv_xname, error);
return;
}
/* Map DMA buffer into kernel space */
if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE,
(caddr_t *)&sc->sc_mem,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
printf("%s @ ledma: DMA buffer map error %d\n",
self->dv_xname, error);
bus_dmamem_free(dmatag, &seg, rseg);
return;
}
/* Load DMA buffer */
if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap, sc->sc_mem,
MEMSIZE, NULL, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
printf("%s: DMA buffer map load error %d\n",
self->dv_xname, error);
bus_dmamem_free(dmatag, &seg, rseg);
bus_dmamem_unmap(dmatag, sc->sc_mem, MEMSIZE);
return;
}
lesc->sc_laddr = lesc->sc_dmamap->dm_segs[0].ds_addr;
sc->sc_addr = lesc->sc_laddr & 0xffffff;
sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
ifmedia_init(&sc->sc_ifmedia, 0, lemediachange, lemediastatus);
ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_10_T, 0, NULL);
ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_10_5, 0, NULL);
ifmedia_add(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(&sc->sc_ifmedia, IFM_ETHER | IFM_AUTO);
sc->sc_hasifmedia = 1;
myetheraddr(sc->sc_arpcom.ac_enaddr);
sc->sc_copytodesc = am7990_copytobuf_contig;
sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
sc->sc_copytobuf = am7990_copytobuf_contig;
sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
sc->sc_zerobuf = am7990_zerobuf_contig;
sc->sc_rdcsr = le_ledma_rdcsr;
sc->sc_wrcsr = le_ledma_wrcsr;
sc->sc_hwinit = le_ledma_hwinit;
sc->sc_nocarrier = le_ledma_nocarrier;
sc->sc_hwreset = le_ledma_hwreset;
/* Establish interrupt handler */
if (sa->sa_nintr != 0)
(void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET, 0,
am7990_intr, sc, self->dv_xname);
am7990_config(&lesc->sc_am7990);
/* now initialize DMA */
le_ledma_hwreset(sc);
}