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/* $OpenBSD: netif_of.c,v 1.2 2001/08/20 19:55:33 jason Exp $ */
/* $NetBSD: netif_of.c,v 1.1 2000/08/20 14:58:39 mrg Exp $ */
/*
* Copyright (C) 1995 Wolfgang Solfrank.
* Copyright (C) 1995 TooLs GmbH.
* 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 TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
/*
* Open Firmware does most of the job for interfacing to the hardware,
* so it is easiest to just replace the netif module with
* this adaptation to the PROM network interface.
*
* Note: this is based in part on sys/arch/sparc/stand/netif_sun.c
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/netif.h>
#include "ofdev.h"
#include "openfirm.h"
static struct netif netif_of;
struct iodesc sockets[SOPEN_MAX];
struct iodesc *
socktodesc(sock)
int sock;
{
if (sock != 0)
return NULL;
return sockets;
}
int
netif_open(machdep_hint)
void *machdep_hint;
{
struct of_dev *op = machdep_hint;
struct iodesc *io;
int fd, error;
char addr[32];
#ifdef NETIF_DEBUG
printf("netif_open...");
#endif
/* find a free socket */
io = sockets;
if (io->io_netif) {
#ifdef NETIF_DEBUG
printf("device busy\n");
#endif
errno = ENFILE;
return -1;
}
bzero(io, sizeof *io);
netif_of.nif_devdata = op;
io->io_netif = &netif_of;
/* Put our ethernet address in io->myea */
OF_getprop(OF_instance_to_package(op->handle),
"mac-address", io->myea, sizeof io->myea);
#ifdef NETIF_DEBUG
printf("OK\n");
#endif
return 0;
}
int
netif_close(fd)
int fd;
{
struct iodesc *io;
struct netif *ni;
#ifdef NETIF_DEBUG
printf("netif_close(%x)...", fd);
#endif
if (fd != 0) {
#ifdef NETIF_DEBUG
printf("EBADF\n");
#endif
errno = EBADF;
return -1;
}
io = &sockets[fd];
ni = io->io_netif;
if (ni != NULL) {
ni->nif_devdata = NULL;
io->io_netif = NULL;
}
#ifdef NETIF_DEBUG
printf("OK\n");
#endif
return 0;
}
/*
* Send a packet. The ether header is already there.
* Return the length sent (or -1 on error).
*/
ssize_t
netif_put(desc, pkt, len)
struct iodesc *desc;
void *pkt;
size_t len;
{
struct of_dev *op;
ssize_t rv;
size_t sendlen;
op = desc->io_netif->nif_devdata;
#ifdef NETIF_DEBUG
{
struct ether_header *eh;
printf("netif_put: desc=0x%x pkt=0x%x len=%d\n",
desc, pkt, len);
eh = pkt;
printf("dst: %s ", ether_sprintf(eh->ether_dhost));
printf("src: %s ", ether_sprintf(eh->ether_shost));
printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
}
#endif
sendlen = len;
if (sendlen < 60) {
sendlen = 60;
#ifdef NETIF_DEBUG
printf("netif_put: length padded to %d\n", sendlen);
#endif
}
rv = OF_write(op->handle, pkt, sendlen);
#ifdef NETIF_DEBUG
printf("netif_put: xmit returned %d\n", rv);
#endif
return rv;
}
/*
* Receive a packet, including the ether header.
* Return the total length received (or -1 on error).
*/
ssize_t
netif_get(desc, pkt, maxlen, timo)
struct iodesc *desc;
void *pkt;
size_t maxlen;
time_t timo;
{
struct of_dev *op;
int tick0, tmo_ms;
int len;
op = desc->io_netif->nif_devdata;
#ifdef NETIF_DEBUG
printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
pkt, maxlen, timo);
#endif
tmo_ms = timo * 1000;
tick0 = OF_milliseconds();
do {
len = OF_read(op->handle, pkt, maxlen);
} while ((len == -2 || len == 0) &&
(OF_milliseconds() - tick0 < tmo_ms));
#ifdef NETIF_DEBUG
printf("netif_get: received len=%d\n", len);
#endif
if (len < 12)
return -1;
#ifdef NETIF_DEBUG
{
struct ether_header *eh = pkt;
printf("dst: %s ", ether_sprintf(eh->ether_dhost));
printf("src: %s ", ether_sprintf(eh->ether_shost));
printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
}
#endif
return len;
}
/*
* Shouldn't really be here, but is used solely for networking, so...
*/
time_t
getsecs()
{
return OF_milliseconds() / 1000;
}
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