NetBSD/sys/dev/isa/if_ai.c

494 lines
13 KiB
C

/* $NetBSD: if_ai.c,v 1.7 1999/01/08 19:22:35 augustss Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Rafal K. Boni.
*
* 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#include <vm/vm.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/ic/i82586reg.h>
#include <dev/ic/i82586var.h>
#include <dev/isa/if_aireg.h>
#ifdef AI_DEBUG
#define DPRINTF(x) printf x
#else
#define DPRINTF(x)
#endif
struct ai_softc {
struct ie_softc sc_ie;
bus_space_tag_t sc_regt; /* space tag for registers */
bus_space_handle_t sc_regh; /* space handle for registers */
u_int8_t card_rev;
u_int8_t card_type;
void *sc_ih; /* interrupt handle */
};
const char *ai_names[] = {
"StarLAN 10",
"EN100",
"StarLAN Fiber",
};
/* Functions required by the i82586 MI driver */
static void ai_reset __P((struct ie_softc *, int));
static void ai_atten __P((struct ie_softc *));
static void ai_copyin __P((struct ie_softc *, void *, int, size_t));
static void ai_copyout __P((struct ie_softc *, const void *, int, size_t));
static u_int16_t ai_read_16 __P((struct ie_softc *, int));
static void ai_write_16 __P((struct ie_softc *, int, u_int16_t));
static void ai_write_24 __P((struct ie_softc *, int, int));
/* Local support functions */
static int check_ie_present __P((struct ie_softc*, bus_space_tag_t,
bus_space_handle_t, bus_size_t));
static int ai_find_mem_size __P((struct ai_softc*, bus_space_tag_t,
bus_size_t));
int ai_match __P((struct device *, struct cfdata *, void *));
void ai_attach __P((struct device *, struct device *, void *));
/*
* AT&T StarLan support routines
*/
static void
ai_reset(sc, why)
struct ie_softc *sc;
int why;
{
struct ai_softc* asc = (struct ai_softc *) sc;
switch (why) {
case CHIP_PROBE:
/* reset to chip to see if it responds */
bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_RESET, 0);
DELAY(100);
break;
case CARD_RESET:
/*
* this takes around 10sec, and we can get
* by quite well w/out it...
*/
break;
}
}
static void
ai_atten(sc)
struct ie_softc *sc;
{
struct ai_softc* asc = (struct ai_softc *) sc;
bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_ATTN, 0);
}
static void
ai_copyin (sc, dst, offset, size)
struct ie_softc *sc;
void *dst;
int offset;
size_t size;
{
int dribble;
u_int8_t* bptr = dst;
bus_space_barrier(sc->bt, sc->bh, offset, size,
BUS_SPACE_BARRIER_READ);
if (offset % 2) {
*bptr = bus_space_read_1(sc->bt, sc->bh, offset);
offset++; bptr++; size--;
}
dribble = size % 2;
bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr,
size >> 1);
if (dribble) {
bptr += size - 1;
offset += size - 1;
*bptr = bus_space_read_1(sc->bt, sc->bh, offset);
}
}
static void
ai_copyout (sc, src, offset, size)
struct ie_softc *sc;
const void *src;
int offset;
size_t size;
{
int dribble;
int osize = size;
int ooffset = offset;
const u_int8_t* bptr = src;
if (offset % 2) {
bus_space_write_1(sc->bt, sc->bh, offset, *bptr);
offset++; bptr++; size--;
}
dribble = size % 2;
bus_space_write_region_2(sc->bt, sc->bh, offset, (u_int16_t *)bptr,
size >> 1);
if (dribble) {
bptr += size - 1;
offset += size - 1;
bus_space_write_1(sc->bt, sc->bh, offset, *bptr);
}
bus_space_barrier(sc->bt, sc->bh, ooffset, osize,
BUS_SPACE_BARRIER_WRITE);
}
static u_int16_t
ai_read_16 (sc, offset)
struct ie_softc *sc;
int offset;
{
bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ);
return bus_space_read_2(sc->bt, sc->bh, offset);
}
static void
ai_write_16 (sc, offset, value)
struct ie_softc *sc;
int offset;
u_int16_t value;
{
bus_space_write_2(sc->bt, sc->bh, offset, value);
bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE);
}
static void
ai_write_24 (sc, offset, addr)
struct ie_softc *sc;
int offset, addr;
{
bus_space_write_4(sc->bt, sc->bh, offset, addr +
(u_long) sc->sc_maddr - (u_long) sc->sc_iobase);
bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE);
}
int
ai_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
int rv = 0;
u_int8_t val, type;
bus_size_t memsize;
bus_space_tag_t iot;
bus_space_handle_t ioh;
struct isa_attach_args * const ia = aux;
struct ai_softc asc;
/* Punt if wildcarded port, IRQ or memory address */
if (ia->ia_irq == ISACF_IRQ_DEFAULT ||
ia->ia_maddr == ISACF_IOMEM_DEFAULT ||
ia->ia_iobase == ISACF_PORT_DEFAULT) {
DPRINTF((
"ai_match: wildcarded IRQ, IOAddr, or memAddr, skipping\n"));
return (0);
}
iot = ia->ia_iot;
/*
* This probe is horribly bad, but I have no info on this card other
* than the former driver, and it was just as bad!
*/
if (bus_space_map(iot, ia->ia_iobase,
AI_IOSIZE, 0, &ioh) != 0) {
DPRINTF(("ai_match: cannot map %d IO ports @ 0x%x\n",
AI_IOSIZE, ia->ia_iobase));
return (0);
}
val = bus_space_read_1(iot, ioh, AI_REVISION);
type = SL_BOARD(val);
if (type != SL10_BOARD && type != EN100_BOARD &&
type != SLFIBER_BOARD) {
DPRINTF(("ai_match: unknown board code 0x%02x @ 0x%x\n",
type, ia->ia_iobase));
goto out;
}
/*
* Fill in just about enough of our local `ai_softc' for
* ai_find_mem_size() to do its job.
*/
bzero(&asc, sizeof asc);
asc.sc_regt = iot;
asc.sc_regh = ioh;
if ((memsize = ai_find_mem_size(&asc,ia->ia_memt,ia->ia_maddr)) == 0) {
DPRINTF(("ai_match: cannot size memory of board @ 0x%x\n",
ia->ia_iobase));
goto out;
}
if (!ia->ia_msize)
ia->ia_msize = memsize;
else if (ia->ia_msize != memsize) {
DPRINTF((
"ai_match: memsize of board @ 0x%x doesn't match config\n",
ia->ia_iobase));
goto out;
}
rv = 1;
ia->ia_msize = memsize;
ia->ia_iosize = AI_IOSIZE;
DPRINTF(("ai_match: found board @ 0x%x\n", ia->ia_iobase));
out:
bus_space_unmap(iot, ioh, AI_IOSIZE);
return rv;
}
void
ai_attach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct ai_softc *asc = (void *)self;
struct ie_softc *sc = &asc->sc_ie;
struct isa_attach_args *ia = aux;
u_int8_t val = 0;
bus_space_handle_t ioh, memh;
u_int8_t ethaddr[ETHER_ADDR_LEN];
char name[80];
if (bus_space_map(ia->ia_iot, ia->ia_iobase,
ia->ia_iosize, 0, &ioh) != 0) {
DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n",
sc->sc_dev.dv_xname,
ia->ia_iobase, ia->ia_iobase + ia->ia_iosize - 1));
return;
}
if (bus_space_map(ia->ia_memt, ia->ia_maddr,
ia->ia_msize, 0, &memh) != 0) {
DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n",
sc->sc_dev.dv_xname,
ia->ia_maddr, ia->ia_maddr + ia->ia_msize - 1));
bus_space_unmap(ia->ia_iot, ioh, ia->ia_iosize);
return;
}
asc->sc_regt = ia->ia_iot;
asc->sc_regh = ioh;
sc->hwinit = NULL;
sc->intrhook = NULL;
sc->hwreset = ai_reset;
sc->chan_attn = ai_atten;
sc->memcopyin = ai_copyin;
sc->memcopyout = ai_copyout;
sc->ie_bus_read16 = ai_read_16;
sc->ie_bus_write16 = ai_write_16;
sc->ie_bus_write24 = ai_write_24;
sc->do_xmitnopchain = 0;
sc->sc_mediachange = NULL;
sc->sc_mediastatus = NULL;
sc->bt = ia->ia_memt;
sc->bh = memh;
/* Map i/o space. */
sc->sc_msize = ia->ia_msize;
sc->sc_maddr = (void *)memh;
sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24);
/* set up pointers to important on-card control structures */
sc->iscp = 0;
sc->scb = IE_ISCP_SZ;
sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24);
sc->buf_area = sc->scb + IE_SCB_SZ;
sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ;
/* zero card memory */
bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize);
/* set card to 16-bit bus mode */
bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 0);
/* set up pointers to key structures */
ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp);
ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb);
ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp);
/* flush setup of pointers, check if chip answers */
bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize,
BUS_SPACE_BARRIER_WRITE);
if (!i82586_proberam(sc)) {
DPRINTF(("\n%s: can't talk to i82586!\n",
sc->sc_dev.dv_xname));
bus_space_unmap(ia->ia_iot, ioh, ia->ia_iosize);
bus_space_unmap(ia->ia_memt, memh, ia->ia_msize);
return;
}
val = bus_space_read_1(asc->sc_regt, asc->sc_regh, AI_REVISION);
asc->card_rev = SL_REV(val);
asc->card_type = SL_BOARD(val) - 1;
sprintf(name, "%s, rev. %d",
ai_names[asc->card_type], asc->card_rev);
i82586_attach(sc, name, ethaddr, NULL, 0, 0);
asc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, i82586_intr, sc);
if (asc->sc_ih == NULL) {
DPRINTF(("\n%s: can't establish interrupt\n",
sc->sc_dev.dv_xname));
}
}
/*
* Divine the memory size of this board.
* Better hope there's nothing important hiding just below the card...
*/
static int
ai_find_mem_size(asc, memt, maddr)
struct ai_softc* asc;
bus_space_tag_t memt;
bus_size_t maddr;
{
int size;
bus_space_handle_t memh;
struct ie_softc* sc = &asc->sc_ie;
for (size = 65536; size >= 16384; size -= 16384) {
if (bus_space_map(memt, maddr, size, 0, &memh) == 0) {
size = check_ie_present(sc, memt, maddr, size);
bus_space_unmap(memt, memh, size);
if (size != 0)
return size;
}
}
return (0);
}
/*
* Check to see if there's an 82586 out there.
*/
static int
check_ie_present(sc, memt, memh, size)
struct ie_softc* sc;
bus_space_tag_t memt;
bus_space_handle_t memh;
bus_size_t size;
{
sc->hwreset = ai_reset;
sc->chan_attn = ai_atten;
sc->ie_bus_read16 = ai_read_16;
sc->ie_bus_write16 = ai_write_16;
sc->bt = memt;
sc->bh = memh;
sc->sc_iobase = (char *)memh + size - (1 << 24);
sc->scp = size + IE_SCP_ADDR - (1 << 24);
bus_space_set_region_1(memt, memh, (u_long) sc->scp, 0, IE_SCP_SZ);
sc->iscp = 0;
bus_space_set_region_1(memt, memh, (u_long) sc->iscp, 0, IE_ISCP_SZ);
sc->scb = IE_ISCP_SZ;
bus_space_set_region_1(memt, memh, sc->scb, 0, IE_SCB_SZ);
/* set card to 16-bit bus mode */
bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 0);
/* set up pointers to key structures */
ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp);
ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb);
ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp);
/* flush setup of pointers, check if chip answers */
bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize,
BUS_SPACE_BARRIER_WRITE);
if (!i82586_proberam(sc))
return (0);
return (size);
}
struct cfattach ai_ca = {
sizeof(struct ai_softc), ai_match, ai_attach
};