static void
initialise_rra(struct sn_softc *sc)
{
int i;
u_int v;
int bitmode = sc->bitmode;
if (bitmode)
NIC_PUT(sc, SNR_EOBC, RBASIZE(sc) / 2 - 2);
else
NIC_PUT(sc, SNR_EOBC, RBASIZE(sc) / 2 - 1);
NIC_PUT(sc, SNR_URRA, UPPER(sc->v_rra[0]));
NIC_PUT(sc, SNR_RSA, LOWER(sc->v_rra[0]));
/* rea must point just past the end of the rra space */
NIC_PUT(sc, SNR_REA, LOWER(sc->v_rea));
NIC_PUT(sc, SNR_RRP, LOWER(sc->v_rra[0]));
NIC_PUT(sc, SNR_RSC, 0);
/* fill up SOME of the rra with buffers */
for (i = 0; i < NRBA; i++) {
v = SONIC_GETDMA(sc->rbuf[i]);
SWO(bitmode, sc->p_rra[i], RXRSRC_PTRHI, UPPER(v));
SWO(bitmode, sc->p_rra[i], RXRSRC_PTRLO, LOWER(v));
SWO(bitmode, sc->p_rra[i], RXRSRC_WCHI, UPPER(PAGE_SIZE/2));
SWO(bitmode, sc->p_rra[i], RXRSRC_WCLO, LOWER(PAGE_SIZE/2));
}
sc->sc_rramark = NRBA;
NIC_PUT(sc, SNR_RWP, LOWER(sc->v_rra[sc->sc_rramark]));
wbflush();
}
/*
* Interface exists: make available by filling in network interface
* record. System will initialize the interface when it is ready
* to accept packets.
*/
int
snsetup(struct sn_softc *sc, uint8_t *lladdr)
{
struct ifnet *ifp = &sc->sc_if;
uint8_t *p;
uint8_t *pp;
int i;
if (sc->space == NULL) {
aprint_error_dev(sc->sc_dev,
"memory allocation for descriptors failed\n");
return 1;
}
/*
* Put the pup in reset mode (sninit() will fix it later),
* stop the timer, disable all interrupts and clear any interrupts.
*/
NIC_PUT(sc, SNR_CR, CR_STP);
wbflush();
NIC_PUT(sc, SNR_CR, CR_RST);
wbflush();
NIC_PUT(sc, SNR_IMR, 0);
wbflush();
NIC_PUT(sc, SNR_ISR, ISR_ALL);
wbflush();
/*
* because the SONIC is basically 16bit device it 'concatenates'
* a higher buffer address to a 16 bit offset--this will cause wrap
* around problems near the end of 64k !!
*/
p = sc->space;
pp = (uint8_t *)roundup((int)p, PAGE_SIZE);
p = pp;
for (i = 0; i < NRRA; i++) {
sc->p_rra[i] = (void *)p;
sc->v_rra[i] = SONIC_GETDMA(p);
p += RXRSRC_SIZE(sc);
}
sc->v_rea = SONIC_GETDMA(p);
p = (uint8_t *)SOALIGN(sc, p);
sc->p_cda = (void *)(p);
sc->v_cda = SONIC_GETDMA(p);
p += CDA_SIZE(sc);
p = (uint8_t *)SOALIGN(sc, p);
for (i = 0; i < NTDA; i++) {
struct mtd *mtdp = &sc->mtda[i];
mtdp->mtd_txp = (void *)p;
mtdp->mtd_vtxp = SONIC_GETDMA(p);
p += TXP_SIZE(sc);
}
p = (uint8_t *)SOALIGN(sc, p);
if ((p - pp) > PAGE_SIZE) {
aprint_error_dev(sc->sc_dev, "sizeof RRA (%ld) + CDA (%ld) +"
"TDA (%ld) > PAGE_SIZE (%d). Punt!\n",
(ulong)sc->p_cda - (ulong)sc->p_rra[0],
(ulong)sc->mtda[0].mtd_txp - (ulong)sc->p_cda,
(ulong)p - (ulong)sc->mtda[0].mtd_txp,
PAGE_SIZE);
return 1;
}
p = pp + PAGE_SIZE;
pp = p;
sc->sc_nrda = PAGE_SIZE / RXPKT_SIZE(sc);
sc->p_rda = (void *)p;
sc->v_rda = SONIC_GETDMA(p);
p = pp + PAGE_SIZE;
for (i = 0; i < NRBA; i++) {
sc->rbuf[i] = (void *)p;
p += PAGE_SIZE;
}
pp = p;
for (i = 0; i < NTDA; i++) {
struct mtd *mtdp = &sc->mtda[i];
mtdp->mtd_buf = p;
mtdp->mtd_vbuf = SONIC_GETDMA(p);
p += TXBSIZE;
}
#ifdef SNDEBUG
camdump(sc);
#endif
aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n",
ether_sprintf(lladdr));
#ifdef SNDEBUG
aprint_debug_dev(sc->sc_dev, "buffers: rra=%p cda=%p rda=%p tda=%p\n",
device_xname(sc->sc_dev), sc->p_rra[0], sc->p_cda,
sc->p_rda, sc->mtda[0].mtd_txp);
#endif
strcpy(ifp->if_xname, device_xname(sc->sc_dev));
ifp->if_softc = sc;
ifp->if_ioctl = snioctl;
ifp->if_start = snstart;
ifp->if_flags =
IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
ifp->if_watchdog = snwatchdog;
if_attach(ifp);
ether_ifattach(ifp, lladdr);
return 0;
}
/*
* Interface exists: make available by filling in network interface
* record. System will initialize the interface when it is ready
* to accept packets.
*/
int
sncsetup(struct snc_softc *sc, u_int8_t *lladdr)
{
u_int32_t p, pp;
int i;
int offset;
/*
* Put the pup in reset mode (sncinit() will fix it later),
* stop the timer, disable all interrupts and clear any interrupts.
*/
NIC_PUT(sc, SNCR_CR, CR_STP);
wbflush();
NIC_PUT(sc, SNCR_CR, CR_RST);
wbflush();
NIC_PUT(sc, SNCR_IMR, 0);
wbflush();
NIC_PUT(sc, SNCR_ISR, ISR_ALL);
wbflush();
/*
* because the SONIC is basically 16bit device it 'concatenates'
* a higher buffer address to a 16 bit offset--this will cause wrap
* around problems near the end of 64k !!
*/
p = pp = 0;
for (i = 0; i < NRRA; i++) {
sc->v_rra[i] = SONIC_GETDMA(p);
p += RXRSRC_SIZE(sc);
}
sc->v_rea = SONIC_GETDMA(p);
p = SOALIGN(sc, p);
sc->v_cda = SONIC_GETDMA(p);
p += CDA_SIZE(sc);
p = SOALIGN(sc, p);
for (i = 0; i < NTDA; i++) {
struct mtd *mtdp = &sc->mtda[i];
mtdp->mtd_vtxp = SONIC_GETDMA(p);
p += TXP_SIZE(sc);
}
p = SOALIGN(sc, p);
if ((p - pp) > PAGE_SIZE) {
device_printf (sc->sc_dev, "sizeof RRA (%ld) + CDA (%ld) +"
"TDA (%ld) > PAGE_SIZE (%d). Punt!\n",
(u_long)sc->v_cda - (u_long)sc->v_rra[0],
(u_long)sc->mtda[0].mtd_vtxp - (u_long)sc->v_cda,
(u_long)p - (u_long)sc->mtda[0].mtd_vtxp,
PAGE_SIZE);
return(1);
}
p = pp + PAGE_SIZE;
pp = p;
sc->sc_nrda = PAGE_SIZE / RXPKT_SIZE(sc);
sc->v_rda = SONIC_GETDMA(p);
p = pp + PAGE_SIZE;
for (i = 0; i < NRBA; i++) {
sc->rbuf[i] = p;
p += PAGE_SIZE;
}
pp = p;
offset = TXBSIZE;
for (i = 0; i < NTDA; i++) {
struct mtd *mtdp = &sc->mtda[i];
mtdp->mtd_vbuf = SONIC_GETDMA(p);
offset += TXBSIZE;
if (offset < PAGE_SIZE) {
p += TXBSIZE;
} else {
p = pp + PAGE_SIZE;
pp = p;
offset = TXBSIZE;
}
}
return (0);
}
