NetBSD/sys/dev/sbus/if_le_ledma.c

435 lines
11 KiB
C

/* $NetBSD: if_le_ledma.c,v 1.5 1998/09/26 08:31:20 pk 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 "opt_inet.h"
#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_ether.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <dev/sbus/sbusvar.h>
#include <dev/ic/lsi64854reg.h>
#include <dev/ic/lsi64854var.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 */
struct sbusdev sc_sd; /* sbus device */
bus_space_tag_t sc_bustag;
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 __P((struct device *, struct cfdata *, void *));
void leattach_ledma __P((struct device *, struct device *, void *));
/*
* Media types supported by the Sun4m.
*/
static int lemedia[] = {
IFM_ETHER|IFM_10_T,
IFM_ETHER|IFM_10_5,
IFM_ETHER|IFM_AUTO,
};
#define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0]))
void lesetutp __P((struct lance_softc *));
void lesetaui __P((struct lance_softc *));
int lemediachange __P((struct lance_softc *));
void lemediastatus __P((struct lance_softc *, struct ifmediareq *));
struct cfattach le_ledma_ca = {
sizeof(struct le_softc), lematch_ledma, leattach_ledma
};
extern struct cfdriver le_cd;
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_ddb.h"
#endif
#ifdef DDB
#define integrate
#define hide
#else
#define integrate static __inline
#define hide static
#endif
static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
hide void lehwreset __P((struct lance_softc *));
hide void lehwinit __P((struct lance_softc *));
hide void lenocarrier __P((struct lance_softc *));
static void
lewrcsr(sc, port, val)
struct lance_softc *sc;
u_int16_t port, val;
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
#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
}
static u_int16_t
lerdcsr(sc, port)
struct lance_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);
return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
}
void
lesetutp(sc)
struct lance_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
lesetaui(sc)
struct lance_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(sc)
struct lance_softc *sc;
{
struct ifmedia *ifm = &sc->sc_media;
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:
lesetutp(sc);
break;
case IFM_10_5:
lesetaui(sc);
break;
case IFM_AUTO:
break;
default:
return (EINVAL);
}
return (0);
}
void
lemediastatus(sc, ifmr)
struct lance_softc *sc;
struct ifmediareq *ifmr;
{
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;
}
hide void
lehwreset(sc)
struct lance_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 */
}
hide void
lehwinit(sc)
struct lance_softc *sc;
{
/*
* Make sure we're using the currently-enabled media type.
* XXX Actually, this is probably unnecessary, now.
*/
switch (IFM_SUBTYPE(sc->sc_media.ifm_cur->ifm_media)) {
case IFM_10_T:
lesetutp(sc);
break;
case IFM_10_5:
lesetaui(sc);
break;
}
}
hide void
lenocarrier(sc)
struct lance_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.
*/
printf("%s: lost carrier on ", sc->sc_dev.dv_xname);
if (L64854_GCSR(lesc->sc_dma) & E_TP_AUI) {
printf("UTP port");
switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
case IFM_10_5:
case IFM_AUTO:
printf(", switching to AUI port");
lesetaui(sc);
}
} else {
printf("AUI port");
switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
case IFM_10_T:
case IFM_AUTO:
printf(", switching to UTP port");
lesetutp(sc);
}
}
printf("\n");
}
int
lematch_ledma(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct sbus_attach_args *sa = aux;
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
}
#define SAME_LANCE(bp, sa) \
(bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset)
void
leattach_ledma(parent, self, aux)
struct device *parent, *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 lance_softc *sc = &lesc->sc_am7990.lsc;
bus_dma_segment_t seg;
int rseg, error;
/* XXX the following declarations should be elsewhere */
extern void myetheraddr __P((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 (bus_space_map2(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;
error = bus_dmamem_alloc(sa->sa_dmatag, MEMSIZE, NBPG, LEDMA_BOUNDARY,
&seg, 1, &rseg, BUS_DMA_NOWAIT);
if (error) {
printf("%s @ ledma: DMA buffer alloc error %d\n",
self->dv_xname, error);
return;
}
error = bus_dmamem_map(sa->sa_dmatag, &seg, rseg, MEMSIZE,
(caddr_t *)&sc->sc_mem,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
if (error) {
printf("%s @ ledma: DMA buffer map error %d\n",
self->dv_xname, error);
bus_dmamem_free(sa->sa_dmatag, &seg, rseg);
return;
}
sc->sc_addr = seg.ds_addr & 0xffffff;
sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
lesc->sc_laddr = seg.ds_addr;
/* Assume SBus is grandparent */
lesc->sc_sd.sd_reset = (void *)lance_reset;
sbus_establish(&lesc->sc_sd, parent);
if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 &&
SAME_LANCE(sa->sa_bp, sa))
sa->sa_bp->dev = &sc->sc_dev;
sc->sc_mediachange = lemediachange;
sc->sc_mediastatus = lemediastatus;
sc->sc_supmedia = lemedia;
sc->sc_nsupmedia = NLEMEDIA;
sc->sc_defaultmedia = IFM_ETHER|IFM_AUTO;
myetheraddr(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;
sc->sc_hwinit = lehwinit;
sc->sc_nocarrier = lenocarrier;
sc->sc_hwreset = lehwreset;
(void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, 0,
am7990_intr, sc);
am7990_config(&lesc->sc_am7990);
/* now initialize DMA */
lehwreset(sc);
}