NetBSD-5.0.2/sys/dev/mca/if_ate_mca.c
/* $NetBSD: if_ate_mca.c,v 1.21 2008/04/28 20:23:53 martin Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jaromir Dolecek.
*
* 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.
*/
/*
* Driver for ATI AT1720X MCA cards based on Fujitsu MB8696xA controller.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ate_mca.c,v 1.21 2008/04/28 20:23:53 martin Exp $");
#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 <sys/bus.h>
#include <sys/intr.h>
#include <dev/ic/mb86960reg.h>
#include <dev/ic/mb86960var.h>
#include <dev/mca/mcavar.h>
#include <dev/mca/mcadevs.h>
int ate_mca_match(device_t, cfdata_t, void *);
void ate_mca_attach(device_t, device_t, void *);
static void ate_mca_detect(bus_space_tag_t, bus_space_handle_t,
uint8_t enaddr[ETHER_ADDR_LEN]);
#define ATE_NPORTS 0x20
struct ate_softc {
struct mb86960_softc sc_mb86960; /* real "mb86960" softc */
/* MCA-specific goo. */
void *sc_ih; /* interrupt cookie */
};
CFATTACH_DECL_NEW(ate_mca, sizeof(struct ate_softc),
ate_mca_match, ate_mca_attach, NULL, NULL);
static const struct ate_mca_product {
uint32_t at_prodid; /* MCA product ID */
const char *at_name; /* device name */
int at_type; /* device type */
} ate_mca_products[] = {
{ MCA_PRODUCT_AT1720T, "ATI AT1720T", FE_TYPE_AT1700T },
{ MCA_PRODUCT_AT1720BT, "ATI AT1720BT", FE_TYPE_AT1700BT },
{ MCA_PRODUCT_AT1720AT, "ATI AT1720AT", FE_TYPE_AT1700AT },
{ MCA_PRODUCT_AT1720FT, "ATI AT1720FT", FE_TYPE_AT1700FT },
{ 0, NULL, 0 },
};
static const struct ate_mca_product *ate_mca_lookup(uint32_t);
static const struct ate_mca_product *
ate_mca_lookup(uint32_t id)
{
const struct ate_mca_product *atp;
for (atp = ate_mca_products; atp->at_name != NULL; atp++)
if (id == atp->at_prodid)
return atp;
return NULL;
}
int
ate_mca_match(device_t parent, cfdata_t cf, void *aux)
{
struct mca_attach_args *ma = aux;
if (ate_mca_lookup(ma->ma_id) != NULL)
return 1;
return 0;
}
/* see POS diagrams below for explanation of these arrays' contents */
static const int ats_iobase[] = {
0x400, 0x2400, 0x4400, 0x6400, 0x1400, 0x3400, 0x5400, 0x7400
};
static const int ats_irq[] = {
3, 4, 5, 9, 10, 11, 12, 15
};
void
ate_mca_attach(device_t parent, device_t self, void *aux)
{
struct ate_softc *isc = device_private(self);
struct mb86960_softc *sc = &isc->sc_mb86960;
struct mca_attach_args *ma = aux;
bus_space_tag_t iot = ma->ma_iot;
bus_space_handle_t ioh;
uint8_t myea[ETHER_ADDR_LEN];
int pos3, pos4;
int iobase, irq;
const struct ate_mca_product *atp;
sc->sc_dev = self;
pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
/*
* POS register 2: (adf pos0)
* 7 6 5 4 3 2 1 0
* \__ enable: 0=adapter disabled, 1=adapter enabled
*
* POS register 3: (adf pos1)
*
* 7 6 5 4 3 2 1 0
* \_/ \___/ \___/
* \ \ \__ I/O Port Addresses: 000=0x400-0x4FF 100=0x1400-
* \ \ 001=0x2400 101=0x3400 010=0x4400 110=0x5400
* \ \ 011=0x6400 111=0x7400
* \ \_____ Boot ROM Memory Address
* \
* \_________ Lower 2 bit of Interrupt Request Number
*
* POS register 4: (adf pos2)
*
* 7 6 5 4 3 2 1 0
* \ \_______ Twisted Pair Type: 0=100 ohm, Unshielded
* \ 1=150 ohm, Shielded
* \____________ Higher 1 bit of Interrupt Request Number:
* 000=3 001=4 010=5 011=9 100=10 101=11 110=12 111=15
*/
atp = ate_mca_lookup(ma->ma_id);
#ifdef DIAGNOSTIC
if (atp == NULL) {
aprint_normal("\n");
aprint_error_dev(sc->sc_dev, "where did the card go?\n");
return;
}
#endif
iobase = ats_iobase[pos3 & 0x7];
irq = ats_irq[((pos4 & 0x40) >> 4) | ((pos3 & 0xc0) >> 6)];
aprint_normal(" slot %d irq %d: %s\n",
ma->ma_slot + 1, irq, atp->at_name);
/* Map i/o space. */
if (bus_space_map(iot, iobase, ATE_NPORTS, 0, &ioh)) {
aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
return;
}
sc->sc_bst = iot;
sc->sc_bsh = ioh;
/* Get ethernet address. */
ate_mca_detect(iot, ioh, myea);
/* This interface is always enabled. */
sc->sc_stat |= FE_STAT_ENABLED;
/*
* Do generic MB86960 attach.
*/
mb86960_attach(sc, myea);
mb86960_config(sc, NULL, 0, 0);
/* Establish the interrupt handler. */
isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET,
mb86960_intr, sc);
if (isc->sc_ih == NULL) {
aprint_error_dev(sc->sc_dev,
"couldn't establish interrupt handler\n");
return;
}
}
/*
* Very simplified ate_detect() from dev/isa/if_ate.c, only
* to determine ethernet address.
*/
static void
ate_mca_detect(bus_space_tag_t iot, bus_space_handle_t ioh,
uint8_t enaddr[ETHER_ADDR_LEN])
{
uint8_t eeprom[FE_EEPROM_SIZE];
/* Get our station address from EEPROM. */
mb86965_read_eeprom(iot, ioh, eeprom);
memcpy(enaddr, eeprom + FE_ATI_EEP_ADDR, ETHER_ADDR_LEN);
}