/* Transmit an ethernet frame */
int
ethernet_xmit (struct sk_buff *skb, struct device *dev)
{
error_t err;
struct ether_device *edev = (struct ether_device *) dev->priv;
u_int count;
u_int tried = 0;
do
{
tried++;
err = device_write (edev->ether_port, D_NOWAIT, 0, skb->data, skb->len, &count);
if (err == EMACH_SEND_INVALID_DEST || err == EMIG_SERVER_DIED)
{
/* Device probably just died, try to reopen it. */
if (tried == 2)
/* Too many tries, abort */
break;
ethernet_close (dev);
ethernet_open (dev);
}
else
{
assert_perror (err);
assert (count == skb->len);
}
}
while (err);
dev_kfree_skb (skb);
return 0;
}
void
setup_ethernet_device (char *name, struct device **device)
{
struct net_status netstat;
size_t count;
int net_address[2];
error_t err;
struct ether_device *edev;
struct device *dev;
edev = calloc (1, sizeof (struct ether_device));
if (!edev)
error (2, ENOMEM, "%s", name);
edev->next = ether_dev;
ether_dev = edev;
*device = dev = &edev->dev;
dev->name = strdup (name);
/* Functions. These ones are the true "hardware layer" in Linux. */
dev->open = 0; /* We set up before calling dev_open. */
dev->stop = ethernet_stop;
dev->hard_start_xmit = ethernet_xmit;
dev->get_stats = ethernet_get_stats;
dev->set_multicast_list = ethernet_set_multi;
/* These are the ones set by drivers/net/net_init.c::ether_setup. */
dev->hard_header = eth_header;
dev->rebuild_header = eth_rebuild_header;
dev->hard_header_cache = eth_header_cache;
dev->header_cache_update = eth_header_cache_update;
dev->hard_header_parse = eth_header_parse;
/* We can't do these two (and we never try anyway). */
/* dev->change_mtu = eth_change_mtu; */
/* dev->set_mac_address = eth_mac_addr; */
/* Some more fields */
dev->priv = edev; /* For reverse lookup. */
dev->type = ARPHRD_ETHER;
dev->hard_header_len = ETH_HLEN;
dev->addr_len = ETH_ALEN;
memset (dev->broadcast, 0xff, ETH_ALEN);
dev->flags = IFF_BROADCAST | IFF_MULTICAST;
/* FIXME: Receive all multicast to fix IPv6, until we implement
ethernet_set_multi. */
dev->flags |= IFF_ALLMULTI;
dev->change_flags = ethernet_change_flags;
dev_init_buffers (dev);
ethernet_open (dev);
/* Fetch hardware information */
count = NET_STATUS_COUNT;
err = device_get_status (edev->ether_port, NET_STATUS,
(dev_status_t) &netstat, &count);
if (err)
error (2, err, "%s: Cannot get device status", name);
dev->mtu = netstat.max_packet_size - dev->hard_header_len;
assert (netstat.header_format == HDR_ETHERNET);
assert (netstat.header_size == ETH_HLEN);
assert (netstat.address_size == ETH_ALEN);
count = 2;
assert (count * sizeof (int) >= ETH_ALEN);
err = device_get_status (edev->ether_port, NET_ADDRESS, net_address, &count);
if (err)
error (2, err, "%s: Cannot get hardware Ethernet address", name);
net_address[0] = ntohl (net_address[0]);
net_address[1] = ntohl (net_address[1]);
memcpy (dev->dev_addr, net_address, ETH_ALEN);
/* That should be enough. */
/* This call adds the device to the `dev_base' chain,
initializes its `ifindex' member (which matters!),
and tells the protocol stacks about the device. */
err = - register_netdevice (dev);
assert_perror (err);
}
static uae_u32 REGPARAM2 dev_open_2 (TrapContext *context)
{
uaecptr ioreq = m68k_areg (regs, 1);
uae_u32 unit = m68k_dreg (regs, 0);
uae_u32 flags = m68k_dreg (regs, 1);
uaecptr buffermgmt;
struct s2devstruct *dev = gets2devstruct (unit);
struct priv_s2devstruct *pdev = 0;
int i;
uaecptr tagp, tagpnext;
if (!dev)
return openfail (ioreq, IOERR_OPENFAIL);
if (!initint(context))
return openfail (ioreq, IOERR_SELFTEST);
if (log_net)
write_log (_T("opening %s:%d opencnt=%d ioreq=%08X\n"), SANA2NAME, unit, dev->opencnt, ioreq);
if (get_word (ioreq + 0x12) < IOSTDREQ_SIZE)
return openfail (ioreq, IOERR_BADLENGTH);
if ((flags & SANA2OPF_PROM) && dev->opencnt > 0)
return openfail (ioreq, IOERR_UNITBUSY);
for (i = 0; i < MAX_OPEN_DEVICES; i++) {
pdev = &pdevst[i];
if (pdev->inuse == 0)
break;
}
if (i == MAX_OPEN_DEVICES)
return openfail (ioreq, IOERR_UNITBUSY);
put_long (ioreq + 24, pdev - pdevst);
pdev->unit = unit;
pdev->flags = flags;
pdev->inuse = 1;
pdev->td = td ? td[unit] : NULL;
pdev->promiscuous = (flags & SANA2OPF_PROM) ? 1 : 0;
if (pdev->td == NULL || pdev->td->active == 0)
return openfail (ioreq, IOERR_OPENFAIL);
if (dev->opencnt == 0) {
dev->unit = unit;
dev->sysdata = xcalloc (uae_u8, ethernet_getdatalenght (pdev->td));
if (!ethernet_open (pdev->td, dev->sysdata, dev, uaenet_gotdata, uaenet_getdata, pdev->promiscuous)) {
xfree (dev->sysdata);
dev->sysdata = NULL;
return openfail (ioreq, IOERR_OPENFAIL);
}
write_log (_T("%s: initializing unit %d\n"), getdevname (), unit);
dev->td = pdev->td;
dev->adapter = pdev->td ? pdev->td->active : 0;
if (dev->adapter) {
dev->online = 1;
dev->configured = 1;
}
start_thread (dev);
}
if (kickstart_version >= 36) {
m68k_areg (regs, 0) = get_long (4) + 350;
m68k_areg (regs, 1) = timerdevname;
CallLib (context, get_long (4), -0x114); /* FindName('timer.device') */
pdev->timerbase = m68k_dreg (regs, 0);
}
pdev->copyfrombuff = pdev->copytobuff = pdev->packetfilter = 0;
pdev->tempbuf = 0;
if (get_word (ioreq + 0x12) >= SANA2_IOREQSIZE) {
buffermgmt = get_long (ioreq + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4 + 4 + 4);
tagpnext = buffermgmt;
while (tagpnext) {
uae_u32 tag = get_long (tagpnext);
uae_u32 val = get_long (tagpnext + 4);
tagp = tagpnext;
tagpnext += 8;
switch (tag)
{
case TAG_DONE:
tagpnext = 0;
break;
case TAG_IGNORE:
break;
case TAG_MORE:
tagpnext = val;
break;
case TAG_SKIP:
tagpnext = tagp + val * 8;
break;
case S2_CopyToBuff:
pdev->copytobuff = val;
break;
case S2_CopyFromBuff:
pdev->copyfrombuff = val;
break;
case S2_PacketFilter:
pdev->packetfilter = val;
break;
}
}
if (log_net)
write_log (_T("%s:%d CTB=%08x CFB=%08x PF=%08x\n"),
getdevname(), unit, pdev->copytobuff, pdev->copyfrombuff, pdev->packetfilter);
m68k_dreg (regs, 0) = dev->td->mtu + ETH_HEADER_SIZE + 2;
m68k_dreg (regs, 1) = 1;
pdev->tempbuf = CallLib (context, get_long (4), -0xC6); /* AllocMem */
if (!pdev->tempbuf) {
if (dev->opencnt == 0) {
ethernet_close (pdev->td, dev->sysdata);
xfree (dev->sysdata);
dev->sysdata = NULL;
}
return openfail (ioreq, S2ERR_BAD_ARGUMENT);
}
/* buffermanagement */
put_long (ioreq + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4 + 4 + 4, pdev->tempbuf);
}
dev->exclusive = flags & SANA2OPF_MINE;
dev->opencnt++;
put_word (m68k_areg (regs, 6) + 32, get_word (m68k_areg (regs, 6) + 32) + 1);
put_byte (ioreq + 31, 0);
put_byte (ioreq + 8, 7);
return 0;
}