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/*-
* Copyright (c) 2000-2001 Benno Rice
* Copyright (c) 2007 Semihalf, Rafal Jaworowski <raj@semihalf.com>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <stand.h>
#include <net.h>
#include <netif.h>
#include "api_public.h"
#include "glue.h"
#include "libuboot.h"
static int net_probe(struct netif *, void *);
static int net_match(struct netif *, void *);
static void net_init(struct iodesc *, void *);
static int net_get(struct iodesc *, void *, size_t, time_t);
static int net_put(struct iodesc *, void *, size_t);
static void net_end(struct netif *);
extern struct netif_stats net_stats[];
struct netif_dif net_ifs[] = {
/* dif_unit dif_nsel dif_stats dif_private */
{ 0, 1, &net_stats[0], 0, },
};
struct netif_stats net_stats[NENTS(net_ifs)];
struct netif_driver uboot_net = {
"uboot_eth", /* netif_bname */
net_match, /* netif_match */
net_probe, /* netif_probe */
net_init, /* netif_init */
net_get, /* netif_get */
net_put, /* netif_put */
net_end, /* netif_end */
net_ifs, /* netif_ifs */
NENTS(net_ifs) /* netif_nifs */
};
struct uboot_softc {
uint32_t sc_pad;
uint8_t sc_rxbuf[ETHER_MAX_LEN];
uint8_t sc_txbuf[ETHER_MAX_LEN + PKTALIGN];
uint8_t *sc_txbufp;
int sc_handle; /* device handle for ub_dev_xxx */
};
static struct uboot_softc uboot_softc;
static int
net_match(struct netif *nif, void *machdep_hint)
{
char **a = (char **)machdep_hint;
if (memcmp("net", *a, 3) == 0)
return (1);
printf("net_match: could not match network device\n");
return (0);
}
static int
net_probe(struct netif *nif, void *machdep_hint)
{
struct device_info *di;
int i;
for (i = 0; i < devs_no; i++)
if ((di = ub_dev_get(i)) != NULL)
if (di->type == DEV_TYP_NET)
break;
if (i == devs_no) {
printf("net_probe: no network devices found, maybe not"
" enumerated yet..?\n");
return (-1);
}
#if defined(NETIF_DEBUG)
printf("net_probe: network device found: %d\n", i);
#endif
uboot_softc.sc_handle = i;
return (0);
}
static int
net_put(struct iodesc *desc, void *pkt, size_t len)
{
struct netif *nif = desc->io_netif;
struct uboot_softc *sc = nif->nif_devdata;
size_t sendlen;
ssize_t rv;
#if defined(NETIF_DEBUG)
struct ether_header *eh;
printf("net_put: desc %p, pkt %p, 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
if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) {
sendlen = ETHER_MIN_LEN - ETHER_CRC_LEN;
bzero(sc->sc_txbufp, sendlen);
} else
sendlen = len;
memcpy(sc->sc_txbufp, pkt, len);
rv = ub_dev_send(sc->sc_handle, sc->sc_txbufp, sendlen);
#if defined(NETIF_DEBUG)
printf("net_put: ub_send returned %d\n", rv);
#endif
if (rv == 0)
rv = len;
else
rv = -1;
return (rv);
}
static int
net_get(struct iodesc *desc, void *pkt, size_t len, time_t timeout)
{
struct netif *nif = desc->io_netif;
struct uboot_softc *sc = nif->nif_devdata;
time_t t;
int err, rlen;
#if defined(NETIF_DEBUG)
printf("net_get: pkt %p, len %d, timeout %d\n", pkt, len, timeout);
#endif
t = getsecs();
do {
err = ub_dev_recv(sc->sc_handle, sc->sc_rxbuf, len, &rlen);
if (err != 0) {
printf("net_get: ub_dev_recv() failed, error=%d\n",
err);
rlen = 0;
break;
}
} while ((rlen == -1 || rlen == 0) && (getsecs() - t < timeout));
#if defined(NETIF_DEBUG)
printf("net_get: received len %d (%x)\n", rlen, rlen);
#endif
if (rlen > 0) {
memcpy(pkt, sc->sc_rxbuf, MIN(len, rlen));
if (rlen != len) {
#if defined(NETIF_DEBUG)
printf("net_get: len %x, rlen %x\n", len, rlen);
#endif
}
return (rlen);
}
return (-1);
}
static void
net_init(struct iodesc *desc, void *machdep_hint)
{
struct netif *nif = desc->io_netif;
struct uboot_softc *sc;
struct device_info *di;
int err;
sc = nif->nif_devdata = &uboot_softc;
if ((err = ub_dev_open(sc->sc_handle)) != 0)
panic("%s%d: initialisation failed with error %d\n",
nif->nif_driver->netif_bname, nif->nif_unit, err);
/* Get MAC address */
di = ub_dev_get(sc->sc_handle);
memcpy(desc->myea, di->di_net.hwaddr, 6);
if (memcmp (desc->myea, "\0\0\0\0\0\0", 6) == 0) {
panic("%s%d: empty ethernet address!",
nif->nif_driver->netif_bname, nif->nif_unit);
}
#if defined(NETIF_DEBUG)
printf("network: %s%d attached to %s\n", nif->nif_driver->netif_bname,
nif->nif_unit, ether_sprintf(desc->myea));
#endif
/* Set correct alignment for TX packets */
sc->sc_txbufp = sc->sc_txbuf;
if ((unsigned long)sc->sc_txbufp % PKTALIGN)
sc->sc_txbufp += PKTALIGN -
(unsigned long)sc->sc_txbufp % PKTALIGN;
}
static void
net_end(struct netif *nif)
{
struct uboot_softc *sc = nif->nif_devdata;
int err;
if ((err = ub_dev_close(sc->sc_handle)) != 0)
panic("%s%d: net_end failed with error %d\n",
nif->nif_driver->netif_bname, nif->nif_unit, err);
}
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