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/* $OpenBSD: if_sn_obio.c,v 1.5 1997/03/29 23:26:49 briggs Exp $ */
/*
* Copyright (C) 1997 Allen Briggs
* All rights reserved.
*
* 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 Allen Briggs
* 4. The name of the author 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 ``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 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/device.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/systm.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <machine/bus.h>
#include <machine/macinfo.h>
#include <machine/viareg.h>
#include "obiovar.h"
#include "if_snreg.h"
#include "if_snvar.h"
#define SONIC_REG_BASE 0x50F0A000
#define SONIC_PROM_BASE 0x50F08000
static int sn_obio_match __P((struct device *, void *, void *));
static void sn_obio_attach __P((struct device *, struct device *, void *));
static void sn_obio_getaddr __P((struct sn_softc *));
struct cfattach sn_obio_ca = {
sizeof(struct sn_softc), sn_obio_match, sn_obio_attach
};
static int
sn_obio_match(parent, vcf, aux)
struct device *parent;
void *vcf;
void *aux;
{
if (mac68k_machine.sonic)
return 1;
return 0;
}
/*
* Install interface into kernel networking data structures
*/
static void
sn_obio_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct obio_attach_args *oa = (struct obio_attach_args *) aux;
struct sn_softc *sc = (void *)self;
int i;
sc->snr_dcr = DCR_SYNC | DCR_WAIT0 | DCR_DMABLOCK |
DCR_RFT16 | DCR_TFT16;
sc->snr_dcr2 = 0;
switch (current_mac_model->machineid) {
case MACH_MACQ700: /* only tested on Q700 */
case MACH_MACQ900:
case MACH_MACQ950:
sc->snr_dcr |= DCR_LBR | DCR_DW32;
sc->bitmode = 1;
break;
case MACH_MACQ800:
case MACH_MACQ650:
case MACH_MACC650:
case MACH_MACC610:
case MACH_MACQ610:
sc->snr_dcr |= DCR_EXBUS | DCR_DW32;
sc->bitmode = 1;
break;
case MACH_MACPB500:
sc->snr_dcr |= DCR_LBR | DCR_DW16;
sc->bitmode = 0;
break;
}
sc->sc_regt = oa->oa_tag;
if (bus_space_map(sc->sc_regt, SONIC_REG_BASE, SN_REGSIZE,
0, &sc->sc_regh)) {
panic("failed to map space for SONIC regs.\n");
}
sc->slotno = 9;
sn_obio_getaddr(sc);
/* regs are addressed as words, big-endian. */
for (i = 0; i < SN_NREGS; i++) {
sc->sc_reg_map[i] = (bus_size_t)((i * 4) + 2);
}
/* snsetup returns 1 if something fails */
if (snsetup(sc)) {
bus_space_unmap(sc->sc_regt, sc->sc_regh, SN_REGSIZE);
return;
}
add_nubus_intr(sc->slotno, snintr, (void *)sc);
}
static u_char bbr4[] = {0,8,4,12,2,10,6,14,1,9,5,13,3,11,7,15};
#define bbr(v) ((bbr4[(v)&0xf] << 4) | bbr4[((v)>>4) & 0xf])
static void
sn_obio_getaddr(sc)
struct sn_softc *sc;
{
bus_space_handle_t bsh;
int i, do_bbr;
u_char b;
if (bus_space_map(sc->sc_regt, SONIC_PROM_BASE, NBPG, 0, &bsh)) {
panic("failed to map space to read SONIC address.\n");
}
/*
* For reasons known only to Apple, MAC addresses in the ethernet
* PROM are stored in Token Ring (IEEE 802.5) format, that is
* with all of the bits in each byte reversed (canonical bit format).
* When the address is read out it must be reversed to ethernet format
* before use.
*
* Apple has been assigned OUI's 00:08:07 and 00:a0:40. All onboard
* ethernet addresses on 68K machines should be in one of these
* two ranges.
*
* Here is where it gets complicated.
*
* The PMac 7200, 7500, 8500, and 9500 accidentally had the PROM
* written in standard ethernet format. The MacOS accounted for this
* in these systems, and did not reverse the bytes. Some other
* networking utilities were not so forgiving, and got confused.
* "Some" of Apple's Nubus ethernet cards also had their bits
* burned in ethernet format.
*
* Apple petitioned the IEEE and was granted the 00:05:02 (bit reversal
* of 00:a0:40) as well. As of OpenTransport 1.1.1, Apple removed
* their workaround and now reverses the bits regardless of
* what kind of machine it is. So PMac systems and the affected
* Nubus cards now use 00:05:02, instead of the 00:a0:40 for which they
* were intended.
*
* See Apple Techinfo article TECHINFO-0020552, "OpenTransport 1.1.1
* and MacOS System 7.5.3 FAQ (10/96)" for more details.
*/
do_bbr = 0;
b = bus_space_read_1(sc->sc_regt, bsh, 0);
if (b == 0x10)
do_bbr = 1;
sc->sc_arpcom.ac_enaddr[0] = (do_bbr) ? bbr(b) : b;
for (i = 1 ; i < ETHER_ADDR_LEN ; i++) {
b = bus_space_read_1(sc->sc_regt, bsh, i);
sc->sc_arpcom.ac_enaddr[i] = (do_bbr) ? bbr(b) : b;
}
bus_space_unmap(sc->sc_regt, bsh, NBPG);
}
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