NetBSD/sys/dev/isa/if_ate.c

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/* $NetBSD: if_ate.c,v 1.23 1998/10/07 04:58:06 enami Exp $ */
1998-01-05 10:31:05 +03:00
/*
* All Rights Reserved, Copyright (C) Fujitsu Limited 1995
*
* This software may be used, modified, copied, distributed, and sold, in
* both source and binary form provided that the above copyright, these
* terms and the following disclaimer are retained. The name of the author
* and/or the contributor may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``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 AUTHOR OR THE CONTRIBUTOR 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.
*/
/*
* Portions copyright (C) 1993, David Greenman. This software may be used,
* modified, copied, distributed, and sold, in both source and binary form
* provided that the above copyright and these terms are retained. Under no
* circumstances is the author responsible for the proper functioning of this
* software, nor does the author assume any responsibility for damages
* incurred with its use.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <machine/bus.h>
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#include <machine/intr.h>
#include <dev/ic/mb86960reg.h>
#include <dev/ic/mb86960var.h>
#include <dev/isa/isavar.h>
#include <dev/isa/if_fereg.h> /* XXX */
int ate_match __P((struct device *, struct cfdata *, void *));
void ate_attach __P((struct device *, struct device *, void *));
struct ate_softc {
struct mb86960_softc sc_mb86960; /* real "mb86960" softc */
/* ISA-specific goo. */
void *sc_ih; /* interrupt cookie */
};
struct cfattach ate_ca = {
sizeof(struct ate_softc), ate_match, ate_attach
};
#if NetBSD <= 199712
struct cfdriver ate_cd = {
NULL, "ate", DV_IFNET
};
#endif
struct fe_simple_probe_struct {
u_char port; /* Offset from the base I/O address. */
u_char mask; /* Bits to be checked. */
u_char bits; /* Values to be compared against. */
};
static __inline__ int fe_simple_probe __P((bus_space_tag_t,
bus_space_handle_t, struct fe_simple_probe_struct const *));
static __inline__ void ate_strobe __P((bus_space_tag_t, bus_space_handle_t));
static void ate_read_eeprom __P((bus_space_tag_t, bus_space_handle_t,
u_char *));
static int ate_find __P((bus_space_tag_t, bus_space_handle_t, int *,
int *));
static int ate_detect __P((bus_space_tag_t, bus_space_handle_t,
u_int8_t enaddr[ETHER_ADDR_LEN]));
static int const ate_iomap[8] = {
0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300
};
#define NATE_IOMAP (sizeof (ate_iomap) / sizeof (ate_iomap[0]))
#define ATE_NPORTS 0x20
/*
* Hardware probe routines.
*/
/*
* Determine if the device is present.
*/
int
ate_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
int i, iobase, irq, rv = 0;
u_int8_t myea[ETHER_ADDR_LEN];
/* Disallow wildcarded values. */
if (ia->ia_iobase == ISACF_PORT_DEFAULT)
return (0);
/*
* See if the sepcified address is valid for MB86965A JLI mode.
*/
for (i = 0; i < NATE_IOMAP; i++)
if (ate_iomap[i] == ia->ia_iobase)
break;
if (i == NATE_IOMAP) {
#ifdef ATE_DEBUG
printf("ate_match: unknown iobase 0x%x\n", ia->ia_iobase);
#endif
return (0);
}
/* Map i/o space. */
if (bus_space_map(iot, ia->ia_iobase, ATE_NPORTS, 0, &ioh)) {
#ifdef ATE_DEBUG
printf("ate_match: couldn't map iospace 0x%x\n",
ia->ia_iobase);
#endif
return (0);
}
if (ate_find(iot, ioh, &iobase, &irq) == 0) {
#ifdef ATE_DEBUG
printf("ate_match: ate_find failed\n");
#endif
goto out;
}
if (iobase != ia->ia_iobase) {
#ifdef ATE_DEBUG
printf("ate_match: unexpected iobase in board: 0x%x\n",
ia->ia_iobase);
#endif
goto out;
}
if (ate_detect(iot, ioh, myea) == 0) { /* XXX necessary? */
#ifdef ATE_DEBUG
printf("ate_match: ate_detect failed\n");
#endif
goto out;
}
if (ia->ia_irq != ISACF_IRQ_DEFAULT) {
if (ia->ia_irq != irq) {
printf("ate_match: irq mismatch; "
"kernel configured %d != board configured %d\n",
ia->ia_irq, irq);
goto out;
}
} else
ia->ia_irq = irq;
ia->ia_iosize = ATE_NPORTS;
ia->ia_msize = 0;
rv = 1;
out:
bus_space_unmap(iot, ioh, ATE_NPORTS);
return (rv);
}
/*
* Check for specific bits in specific registers have specific values.
*/
static __inline__ int
fe_simple_probe (iot, ioh, sp)
bus_space_tag_t iot;
bus_space_handle_t ioh;
struct fe_simple_probe_struct const *sp;
{
u_int8_t val;
struct fe_simple_probe_struct const *p;
for (p = sp; p->mask != 0; p++) {
val = bus_space_read_1(iot, ioh, p->port);
if ((val & p->mask) != p->bits) {
#ifdef ATE_DEBUG
printf("fe_simple_probe: %x & %x != %x\n",
val, p->mask, p->bits);
#endif
return (0);
}
}
return (1);
}
/*
* Routines to read all bytes from the config EEPROM through MB86965A.
* I'm not sure what exactly I'm doing here... I was told just to follow
* the steps, and it worked. Could someone tell me why the following
* code works? (Or, why all similar codes I tried previously doesn't
* work.) FIXME.
*/
static __inline__ void
ate_strobe (iot, ioh)
bus_space_tag_t iot;
bus_space_handle_t ioh;
{
/*
* Output same value twice. To speed-down execution?
*/
bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT);
bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT);
bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK);
bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK);
bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT);
bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT);
}
static void
ate_read_eeprom(iot, ioh, data)
bus_space_tag_t iot;
bus_space_handle_t ioh;
u_char *data;
{
int n, count;
u_char val, bit;
/* Read bytes from EEPROM; two bytes per an iterration. */
for (n = 0; n < FE_EEPROM_SIZE / 2; n++) {
/* Reset the EEPROM interface. */
bus_space_write_1(iot, ioh, FE_BMPR16, 0x00);
bus_space_write_1(iot, ioh, FE_BMPR17, 0x00);
bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT);
/* Start EEPROM access. */
bus_space_write_1(iot, ioh, FE_BMPR17, FE_B17_DATA);
ate_strobe(iot, ioh);
/* Pass the iterration count to the chip. */
count = 0x80 | n;
for (bit = 0x80; bit != 0x00; bit >>= 1) {
bus_space_write_1(iot, ioh, FE_BMPR17,
(count & bit) ? FE_B17_DATA : 0);
ate_strobe(iot, ioh);
}
bus_space_write_1(iot, ioh, FE_BMPR17, 0x00);
/* Read a byte. */
val = 0;
for (bit = 0x80; bit != 0x00; bit >>= 1) {
ate_strobe(iot, ioh);
if (bus_space_read_1(iot, ioh, FE_BMPR17) &
FE_B17_DATA)
val |= bit;
}
*data++ = val;
/* Read one more byte. */
val = 0;
for (bit = 0x80; bit != 0x00; bit >>= 1) {
ate_strobe(iot, ioh);
if (bus_space_read_1(iot, ioh, FE_BMPR17) &
FE_B17_DATA)
val |= bit;
}
*data++ = val;
}
/* Make sure the EEPROM is turned off. */
bus_space_write_1(iot, ioh, FE_BMPR16, 0);
bus_space_write_1(iot, ioh, FE_BMPR17, 0);
#if ATE_DEBUG >= 3
/* Report what we got. */
data -= FE_EEPROM_SIZE;
log(LOG_INFO, "ate_read_eeprom: EEPROM at %04x:"
" %02x%02x%02x%02x %02x%02x%02x%02x -"
" %02x%02x%02x%02x %02x%02x%02x%02x -"
" %02x%02x%02x%02x %02x%02x%02x%02x -"
" %02x%02x%02x%02x %02x%02x%02x%02x\n",
(int) ioh, /* XXX */
data[ 0], data[ 1], data[ 2], data[ 3],
data[ 4], data[ 5], data[ 6], data[ 7],
data[ 8], data[ 9], data[10], data[11],
data[12], data[13], data[14], data[15],
data[16], data[17], data[18], data[19],
data[20], data[21], data[22], data[23],
data[24], data[25], data[26], data[27],
data[28], data[29], data[30], data[31]);
#endif
}
/*
* Hardware (vendor) specific probe routines.
*/
/*
* Probe and initialization for Allied-Telesis AT1700/RE2000 series.
*/
static int
ate_find(iot, ioh, iobase, irq)
bus_space_tag_t iot;
bus_space_handle_t ioh;
int *iobase, *irq;
{
u_char eeprom[FE_EEPROM_SIZE];
int n;
static int const irqmap[4][4] = {
{ 3, 4, 5, 9 },
{ 10, 11, 12, 15 },
{ 3, 11, 5, 15 },
{ 10, 11, 14, 15 },
};
static struct fe_simple_probe_struct const probe_table[] = {
{ FE_DLCR2, 0x70, 0x00 },
{ FE_DLCR4, 0x08, 0x00 },
{ FE_DLCR5, 0x80, 0x00 },
#if 0
{ FE_BMPR16, 0x1B, 0x00 },
{ FE_BMPR17, 0x7F, 0x00 },
#endif
{ 0 }
};
#if ATE_DEBUG >= 4
log(LOG_INFO, "ate_find: probe (0x%x) for ATI\n", iobase);
#if 0
fe_dump(LOG_INFO, sc);
#endif
#endif
/*
* We should test if MB86965A is on the base address now.
* Unfortunately, it is very hard to probe it reliably, since
* we have no way to reset the chip under software control.
* On cold boot, we could check the "signature" bit patterns
* described in the Fujitsu document. On warm boot, however,
* we can predict almost nothing about register values.
*/
if (!fe_simple_probe(iot, ioh, probe_table))
return (0);
/* Check if our I/O address matches config info on 86965. */
n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_ADDR)
>> FE_B19_ADDR_SHIFT;
*iobase = ate_iomap[n];
/*
* We are now almost sure we have an AT1700 at the given
* address. So, read EEPROM through 86965. We have to write
* into LSI registers to read from EEPROM. I want to avoid it
* at this stage, but I cannot test the presense of the chip
* any further without reading EEPROM. FIXME.
*/
ate_read_eeprom(iot, ioh, eeprom);
/* Make sure that config info in EEPROM and 86965 agree. */
if (eeprom[FE_EEPROM_CONF] != bus_space_read_1(iot, ioh, FE_BMPR19)) {
#ifdef DIAGNOSTIC
printf("ate_find: "
"incorrect configration in eeprom and chip\n");
#endif
return (0);
}
/*
* Try to determine IRQ settings.
* Different models use different ranges of IRQs.
*/
n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_IRQ)
>> FE_B19_IRQ_SHIFT;
switch (eeprom[FE_ATI_EEP_REVISION] & 0xf0) {
case 0x30:
*irq = irqmap[3][n];
break;
case 0x10:
case 0x50:
*irq = irqmap[2][n];
break;
case 0x40:
case 0x60:
if (eeprom[FE_ATI_EEP_MAGIC] & 0x04) {
*irq = irqmap[1][n];
break;
}
default:
*irq = irqmap[0][n];
break;
}
return (1);
}
/*
* Determine type and ethernet address.
*/
static int
ate_detect(iot, ioh, enaddr)
bus_space_tag_t iot;
bus_space_handle_t ioh;
u_int8_t enaddr[ETHER_ADDR_LEN];
{
u_char eeprom[FE_EEPROM_SIZE];
int type;
/* Get our station address from EEPROM. */
ate_read_eeprom(iot, ioh, eeprom);
bcopy(eeprom + FE_ATI_EEP_ADDR, enaddr, ETHER_ADDR_LEN);
/* Make sure we got a valid station address. */
if ((enaddr[0] & 0x03) != 0x00 ||
(enaddr[0] == 0x00 && enaddr[1] == 0x00 && enaddr[2] == 0x00)) {
#ifdef ATE_DEBUG
printf("fmv_detect: invalid ethernet address\n");
#endif
return (0);
}
/*
* Determine the card type.
*/
switch (eeprom[FE_ATI_EEP_MODEL]) {
case FE_ATI_MODEL_AT1700T:
type = FE_TYPE_AT1700T;
break;
case FE_ATI_MODEL_AT1700BT:
type = FE_TYPE_AT1700BT;
break;
case FE_ATI_MODEL_AT1700FT:
type = FE_TYPE_AT1700FT;
break;
case FE_ATI_MODEL_AT1700AT:
type = FE_TYPE_AT1700AT;
break;
default:
type = FE_TYPE_RE2000;
break;
}
return (type);
}
void
ate_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct ate_softc *isc = (struct ate_softc *)self;
struct mb86960_softc *sc = &isc->sc_mb86960;
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
u_int8_t myea[ETHER_ADDR_LEN];
const char *typestr;
int type;
printf("\n");
/* Map i/o space. */
if (bus_space_map(iot, ia->ia_iobase, ATE_NPORTS, 0, &ioh)) {
printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
return;
}
sc->sc_bst = iot;
sc->sc_bsh = ioh;
/* Determine the card type and get ehternet address. */
type = ate_detect(iot, ioh, myea);
switch (type) {
case FE_TYPE_AT1700T:
typestr = "AT-1700T";
break;
case FE_TYPE_AT1700BT:
typestr = "AT-1700BT";
break;
case FE_TYPE_AT1700FT:
typestr = "AT-1700FT";
break;
case FE_TYPE_AT1700AT:
typestr = "AT-1700AT";
break;
case FE_TYPE_RE2000:
typestr = "unknown (RE-2000?)";
break;
default:
/* Unknown card type: maybe a new model, but... */
printf("%s: where did the card go?!\n", sc->sc_dev.dv_xname);
panic("unknown card");
}
printf("%s: %s Ethernet\n", sc->sc_dev.dv_xname, typestr);
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/* This interface is always enabled. */
sc->sc_enabled = 1;
/*
* Do generic MB86960 attach.
*/
mb86960_attach(sc, MB86960_TYPE_86965, myea);
mb86960_config(sc, NULL, 0, 0);
/* Establish the interrupt handler. */
isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, mb86960_intr, sc);
if (isc->sc_ih == NULL)
printf("%s: couldn't establish interrupt handler\n",
sc->sc_dev.dv_xname);
}