327 lines
7.6 KiB
C
327 lines
7.6 KiB
C
/*-
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* Copyright (c) 2000-2001 Benno Rice
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip.h>
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#include <stand.h>
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#include <net.h>
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#include <netif.h>
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#include "libofw.h"
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#include "openfirm.h"
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static int ofwn_probe(struct netif *, void *);
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static int ofwn_match(struct netif *, void *);
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static void ofwn_init(struct iodesc *, void *);
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static ssize_t ofwn_get(struct iodesc *, void **, time_t);
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static ssize_t ofwn_put(struct iodesc *, void *, size_t);
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static void ofwn_end(struct netif *);
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extern struct netif_stats ofwn_stats[];
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struct netif_dif ofwn_ifs[] = {
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{
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.dif_unit=0,
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.dif_nsel=1,
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.dif_stats=&ofwn_stats[0],
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.dif_private=0,
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},
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};
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struct netif_stats ofwn_stats[nitems(ofwn_ifs)];
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struct netif_driver ofwnet = {
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.netif_bname="net",
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.netif_match=ofwn_match,
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.netif_probe=ofwn_probe,
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.netif_init=ofwn_init,
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.netif_get=ofwn_get,
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.netif_put=ofwn_put,
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.netif_end=ofwn_end,
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.netif_ifs=ofwn_ifs,
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.netif_nifs=nitems(ofwn_ifs)
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};
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static ihandle_t netinstance;
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static void *dmabuf;
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static int
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ofwn_match(struct netif *nif, void *machdep_hint)
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{
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return 1;
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}
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static int
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ofwn_probe(struct netif *nif, void *machdep_hint)
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{
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return 0;
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}
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static ssize_t
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ofwn_put(struct iodesc *desc, void *pkt, size_t len)
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{
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size_t sendlen;
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ssize_t rv;
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#if defined(NETIF_DEBUG)
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struct ether_header *eh;
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printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", desc, pkt, len);
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eh = pkt;
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printf("dst: %s ", ether_sprintf(eh->ether_dhost));
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printf("src: %s ", ether_sprintf(eh->ether_shost));
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printf("type: 0x%x\n", eh->ether_type & 0xffff);
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#endif
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sendlen = len;
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if (sendlen < 60) {
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sendlen = 60;
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#if defined(NETIF_DEBUG)
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printf("netif_put: length padded to %d\n", sendlen);
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#endif
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}
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if (dmabuf) {
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bcopy(pkt, dmabuf, sendlen);
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pkt = dmabuf;
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}
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rv = OF_write(netinstance, pkt, len);
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#if defined(NETIF_DEBUG)
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printf("netif_put: OF_write returned %d\n", rv);
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#endif
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return rv;
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}
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static ssize_t
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ofwn_get(struct iodesc *desc, void **pkt, time_t timeout)
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{
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time_t t;
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ssize_t length;
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size_t len;
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char *buf, *ptr;
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#if defined(NETIF_DEBUG)
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printf("netif_get: pkt=%p, timeout=%d\n", pkt, timeout);
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#endif
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/*
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* We should read the "max-frame-size" int property instead,
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* but at this time the iodesc does not have mtu, so we will take
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* a small shortcut here.
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*/
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len = ETHER_MAX_LEN;
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buf = malloc(len + ETHER_ALIGN);
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if (buf == NULL)
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return (-1);
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ptr = buf + ETHER_ALIGN;
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t = getsecs();
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do {
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length = OF_read(netinstance, ptr, len);
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} while ((length == -2 || length == 0) &&
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(getsecs() - t < timeout));
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#if defined(NETIF_DEBUG)
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printf("netif_get: received length=%d (%x)\n", length, length);
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#endif
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if (length < 12) {
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free(buf);
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return (-1);
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}
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#if defined(NETIF_VERBOSE_DEBUG)
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{
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char *ch = ptr;
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int i;
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for(i = 0; i < 96; i += 4) {
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printf("%02x%02x%02x%02x ", ch[i], ch[i+1],
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ch[i+2], ch[i+3]);
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}
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printf("\n");
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}
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#endif
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#if defined(NETIF_DEBUG)
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{
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struct ether_header *eh = ptr;
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printf("dst: %s ", ether_sprintf(eh->ether_dhost));
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printf("src: %s ", ether_sprintf(eh->ether_shost));
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printf("type: 0x%x\n", eh->ether_type & 0xffff);
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}
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#endif
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*pkt = buf;
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return (length);
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}
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static void
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ofwn_init(struct iodesc *desc, void *machdep_hint)
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{
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phandle_t netdev;
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char path[64];
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char *ch;
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int pathlen;
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pathlen = OF_getprop(chosen, "bootpath", path, 64);
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if ((ch = strchr(path, ':')) != NULL)
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*ch = '\0';
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netdev = OF_finddevice(path);
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if (OF_getprop(netdev, "local-mac-address", desc->myea, 6) == -1)
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goto punt;
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printf("boot: ethernet address: %s\n", ether_sprintf(desc->myea));
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if ((netinstance = OF_open(path)) == -1) {
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printf("Could not open network device.\n");
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goto punt;
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}
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#if defined(NETIF_DEBUG)
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printf("ofwn_init: Open Firmware instance handle: %08x\n", netinstance);
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#endif
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dmabuf = NULL;
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if (OF_call_method("dma-alloc", netinstance, 1, 1, (64 * 1024), &dmabuf)
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< 0) {
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printf("Failed to allocate DMA buffer (got %p).\n", dmabuf);
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goto punt;
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}
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#if defined(NETIF_DEBUG)
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printf("ofwn_init: allocated DMA buffer: %p\n", dmabuf);
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#endif
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return;
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punt:
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printf("\n");
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printf("Could not boot from %s.\n", path);
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OF_enter();
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}
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static void
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ofwn_end(struct netif *nif)
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{
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#ifdef BROKEN
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/* dma-free freezes at least some Apple ethernet controllers */
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OF_call_method("dma-free", netinstance, 2, 0, dmabuf, MAXPHYS);
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#endif
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OF_close(netinstance);
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}
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#if 0
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int
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ofwn_getunit(const char *path)
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{
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int i;
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char newpath[255];
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OF_canon(path, newpath, 254);
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for (i = 0; i < nofwninfo; i++) {
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printf(">>> test =\t%s\n", ofwninfo[i].ofwn_path);
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if (strcmp(path, ofwninfo[i].ofwn_path) == 0)
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return i;
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if (strcmp(newpath, ofwninfo[i].ofwn_path) == 0)
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return i;
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}
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return -1;
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}
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#endif
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/*
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* To properly match network devices, we have to subclass the netdev device.
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* It has a different devdesc than a normal network device (which is fine:
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* it's a struct superset) and different matching criteria (since it has to
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* look at the path, find a handle and see if that handle is a network node
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* or not).
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*/
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static int ofwnd_init(void);
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static int ofwnd_parsedev(struct devdesc **, const char *, const char **);
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static bool ofwnd_match(struct devsw *, const char *);
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static char *ofwnd_fmtdev(struct devdesc *);
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struct devsw ofw_netdev = {
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.dv_name = "network",
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.dv_type = DEVT_NET,
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.dv_init = ofwnd_init,
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.dv_match = ofwnd_match,
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.dv_fmtdev = ofwnd_fmtdev,
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.dv_parsedev = ofwnd_parsedev,
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};
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static int ofwnd_init(void)
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{
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netdev.dv_init();
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ofw_netdev.dv_strategy = netdev.dv_strategy;
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ofw_netdev.dv_open = netdev.dv_open;
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ofw_netdev.dv_close = netdev.dv_close;
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ofw_netdev.dv_ioctl = netdev.dv_ioctl;
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ofw_netdev.dv_print = netdev.dv_print;
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ofw_netdev.dv_fmtdev = netdev.dv_fmtdev;
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/* parsedev is unique to ofwnd */
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/* match is unique to ofwnd */
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return (0);
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}
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static int
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ofwnd_parsedev(struct devdesc **dev, const char *devspec, const char **path)
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{
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return (ofw_common_parsedev(dev, devspec, path, ofw_netdev.dv_name));
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}
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static bool
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ofwnd_match(struct devsw *devsw, const char *devspec)
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{
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const char *path;
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return (ofw_path_to_handle(devspec, devsw->dv_name, &path) != -1);
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}
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static char *
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ofwnd_fmtdev(struct devdesc *idev)
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{
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struct ofw_devdesc *dev = (struct ofw_devdesc *)idev;
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return (dev->d_path);
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}
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