/*
* open the VCC
*/
void
patm_rx_vcc_open(struct patm_softc *sc, struct patm_vcc *vcc)
{
uint32_t w1 = IDT_RCT_OPEN;
patm_debug(sc, VCC, "%u.%u RX opening", vcc->vcc.vpi, vcc->vcc.vci);
switch (vcc->vcc.aal) {
case ATMIO_AAL_0:
w1 |= IDT_RCT_AAL0 | IDT_RCT_FBP2 | IDT_RCT_RCI;
break;
case ATMIO_AAL_34:
w1 |= IDT_RCT_AAL34;
break;
case ATMIO_AAL_5:
w1 |= IDT_RCT_AAL5;
break;
case ATMIO_AAL_RAW:
w1 |= IDT_RCT_AALRAW | IDT_RCT_RCI;
break;
}
if (vcc->cid != 0)
patm_sram_write4(sc, sc->mmap->rct + vcc->cid *
IDT_RCT_ENTRY_SIZE, w1, 0, 0, 0xffffffff);
else {
/* switch the interface into promiscuous mode */
patm_nor_write(sc, IDT_NOR_CFG, patm_nor_read(sc, IDT_NOR_CFG) |
IDT_CFG_ICAPT | IDT_CFG_VPECA);
}
vcc->vflags |= PATM_VCC_RX_OPEN;
}
/*
* Try to close the given VCC
*/
static int
patm_close_vcc(struct patm_softc *sc, struct atmio_closevcc *arg)
{
u_int cid;
struct patm_vcc *vcc;
int error = 0;
patm_debug(sc, VCC, "Close VCC: %u.%u", arg->vpi, arg->vci);
if (!LEGAL_VPI(sc, arg->vpi) || !LEGAL_VCI(sc, arg->vci))
return (EINVAL);
cid = PATM_CID(sc, arg->vpi, arg->vci);
mtx_lock(&sc->mtx);
if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
/* stopped while we have analyzed the arguments */
error = EIO;
goto done;
}
vcc = sc->vccs[cid];
if (vcc == NULL || !(vcc->vflags & PATM_VCC_OPEN)) {
error = ENOENT;
goto done;
}
if (vcc->vflags & PATM_VCC_TX_OPEN)
patm_tx_vcc_close(sc, vcc);
if (vcc->vflags & PATM_VCC_RX_OPEN)
patm_rx_vcc_close(sc, vcc);
if (vcc->vcc.flags & ATMIO_FLAG_ASYNC)
goto done;
while (vcc->vflags & (PATM_VCC_TX_CLOSING | PATM_VCC_RX_CLOSING)) {
cv_wait(&sc->vcc_cv, &sc->mtx);
if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
/* ups, has been stopped */
error = EIO;
goto done;
}
}
if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX))
patm_tx_vcc_closed(sc, vcc);
if (!(vcc->vcc.flags & ATMIO_FLAG_NORX))
patm_rx_vcc_closed(sc, vcc);
patm_vcc_closed(sc, vcc);
done:
mtx_unlock(&sc->mtx);
return (error);
}
void
patm_load_vc(struct patm_softc *sc, struct patm_vcc *vcc, int reload)
{
patm_debug(sc, VCC, "Open VCC: opening");
if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX))
patm_tx_vcc_open(sc, vcc);
if (!(vcc->vcc.flags & ATMIO_FLAG_NORX))
patm_rx_vcc_open(sc, vcc);
if (!reload) {
/* inform management about non-NG and NG-PVCs */
if (!(vcc->vcc.flags & ATMIO_FLAG_NG) ||
(vcc->vcc.flags & ATMIO_FLAG_PVC))
ATMEV_SEND_VCC_CHANGED(IFP2IFATM(sc->ifp), vcc->vcc.vpi,
vcc->vcc.vci, 1);
}
patm_debug(sc, VCC, "Open VCC: now open");
}
/*
* Stop the card and reset it
*/
void
patm_reset(struct patm_softc *sc)
{
patm_debug(sc, ATTACH, "resetting...");
patm_nor_write(sc, IDT_NOR_CFG, IDT_CFG_SWRST);
DELAY(200);
patm_nor_write(sc, IDT_NOR_CFG, 0);
DELAY(200);
patm_nor_write(sc, IDT_NOR_RSQH, 0);
patm_nor_write(sc, IDT_NOR_TSQH, 0);
patm_nor_write(sc, IDT_NOR_GP, IDT_GP_PHY_RST);
DELAY(50);
patm_nor_write(sc, IDT_NOR_GP, IDT_GP_EEDO | IDT_GP_EECS);
DELAY(50);
}
/* close the given vcc for transmission */
void
patm_rx_vcc_close(struct patm_softc *sc, struct patm_vcc *vcc)
{
u_int w1;
patm_debug(sc, VCC, "%u.%u RX closing", vcc->vcc.vpi, vcc->vcc.vci);
if (vcc->cid == 0) {
/* switch off promiscuous mode */
patm_nor_write(sc, IDT_NOR_CFG, patm_nor_read(sc, IDT_NOR_CFG) &
~(IDT_CFG_ICAPT | IDT_CFG_VPECA));
vcc->vflags &= ~PATM_VCC_RX_OPEN;
return;
}
/* close the connection but keep state */
w1 = rct_read(sc, vcc->cid, 0);
w1 &= ~IDT_RCT_OPEN;
rct_write(sc, vcc->cid, 0, w1);
/* minimum idle count */
w1 = (w1 & ~IDT_RCT_IACT_CNT_MASK) | (1 << IDT_RCT_IACT_CNT_SHIFT);
rct_write(sc, vcc->cid, 0, w1);
/* initialize scan */
patm_nor_write(sc, IDT_NOR_IRCP, vcc->cid);
vcc->vflags &= ~PATM_VCC_RX_OPEN;
vcc->vflags |= PATM_VCC_RX_CLOSING;
/*
* check the RSQ
* This is a hack. The problem is, that although an entry is written
* to the RSQ, no interrupt is generated. Also we must wait 1 cell
* time for the SAR to process the scan of our connection.
*/
DELAY(1);
patm_intr_rsq(sc);
}
/*
* Handle the given receive status queue entry
*/
void
patm_rx(struct patm_softc *sc, struct idt_rsqe *rsqe)
{
struct mbuf *m;
void *buf;
u_int stat, cid, w, cells, len, h;
struct patm_vcc *vcc;
struct atm_pseudohdr aph;
u_char *trail;
cid = le32toh(rsqe->cid);
stat = le32toh(rsqe->stat);
h = le32toh(rsqe->handle);
cid = PATM_CID(sc, IDT_RSQE_VPI(cid), IDT_RSQE_VCI(cid));
vcc = sc->vccs[cid];
if (IDT_RSQE_TYPE(stat) == IDT_RSQE_IDLE) {
/* connection has gone idle */
if (stat & IDT_RSQE_BUF)
patm_rcv_free(sc, patm_rcv_handle(sc, h), h);
w = rct_read(sc, cid, 0);
if (w != 0 && !(w & IDT_RCT_OPEN))
rct_write(sc, cid, 0, 0);
if (vcc != NULL && (vcc->vflags & PATM_VCC_RX_CLOSING)) {
patm_debug(sc, VCC, "%u.%u RX closed", vcc->vcc.vpi,
vcc->vcc.vci);
vcc->vflags &= ~PATM_VCC_RX_CLOSING;
if (vcc->vcc.flags & ATMIO_FLAG_ASYNC) {
patm_rx_vcc_closed(sc, vcc);
if (!(vcc->vflags & PATM_VCC_OPEN))
patm_vcc_closed(sc, vcc);
} else
cv_signal(&sc->vcc_cv);
}
return;
}
buf = patm_rcv_handle(sc, h);
if (vcc == NULL || (vcc->vflags & PATM_VCC_RX_OPEN) == 0) {
patm_rcv_free(sc, buf, h);
return;
}
cells = IDT_RSQE_CNT(stat);
KASSERT(cells > 0, ("zero cell count"));
if (vcc->vcc.aal == ATMIO_AAL_0) {
/* deliver this packet as it is */
if ((m = patm_rcv_mbuf(sc, buf, h, 1)) == NULL)
return;
m->m_len = cells * 48;
m->m_pkthdr.len = m->m_len;
m->m_pkthdr.rcvif = sc->ifp;
} else if (vcc->vcc.aal == ATMIO_AAL_34) {
/* XXX AAL3/4 */
patm_rcv_free(sc, buf, h);
return;
} else if (vcc->vcc.aal == ATMIO_AAL_5) {
if (stat & IDT_RSQE_CRC) {
if_inc_counter(sc->ifp, IFCOUNTER_IERRORS, 1);
if (vcc->chain != NULL) {
m_freem(vcc->chain);
vcc->chain = vcc->last = NULL;
}
return;
}
/* append to current chain */
if (vcc->chain == NULL) {
if ((m = patm_rcv_mbuf(sc, buf, h, 1)) == NULL)
return;
m->m_len = cells * 48;
m->m_pkthdr.len = m->m_len;
m->m_pkthdr.rcvif = sc->ifp;
vcc->chain = vcc->last = m;
} else {
if ((m = patm_rcv_mbuf(sc, buf, h, 0)) == NULL)
return;
m->m_len = cells * 48;
vcc->last->m_next = m;
vcc->last = m;
vcc->chain->m_pkthdr.len += m->m_len;
}
if (!(stat & IDT_RSQE_EPDU))
return;
trail = mtod(m, u_char *) + m->m_len - 6;
len = (trail[0] << 8) + trail[1];
if ((u_int)vcc->chain->m_pkthdr.len < len + 8) {
patm_printf(sc, "%s: bad aal5 lengths %u %u\n",
__func__, (u_int)m->m_pkthdr.len, len);
m_freem(vcc->chain);
vcc->chain = vcc->last = NULL;
return;
}
m->m_len -= vcc->chain->m_pkthdr.len - len;
KASSERT(m->m_len >= 0, ("bad last mbuf"));
m = vcc->chain;
vcc->chain = vcc->last = NULL;
m->m_pkthdr.len = len;
} else
/* transmission side finally closed */
void
patm_rx_vcc_closed(struct patm_softc *sc, struct patm_vcc *vcc)
{
patm_debug(sc, VCC, "%u.%u RX finally closed",
vcc->vcc.vpi, vcc->vcc.vci);
}
/*
* Open the VCC with the given parameters
*/
static int
patm_open_vcc(struct patm_softc *sc, struct atmio_openvcc *arg)
{
u_int cid;
struct patm_vcc *vcc;
int error = 0;
patm_debug(sc, VCC, "Open VCC: %u.%u flags=%#x", arg->param.vpi,
arg->param.vci, arg->param.flags);
if (!LEGAL_VPI(sc, arg->param.vpi) || !LEGAL_VCI(sc, arg->param.vci))
return (EINVAL);
if (arg->param.vci == 0 && (arg->param.vpi != 0 ||
!(arg->param.flags & ATMIO_FLAG_NOTX) ||
arg->param.aal != ATMIO_AAL_RAW))
return (EINVAL);
cid = PATM_CID(sc, arg->param.vpi, arg->param.vci);
if ((arg->param.flags & ATMIO_FLAG_NOTX) &&
(arg->param.flags & ATMIO_FLAG_NORX))
return (EINVAL);
if ((arg->param.traffic == ATMIO_TRAFFIC_ABR) &&
(arg->param.flags & (ATMIO_FLAG_NOTX | ATMIO_FLAG_NORX)))
return (EINVAL);
/* allocate vcc */
vcc = uma_zalloc(sc->vcc_zone, M_NOWAIT | M_ZERO);
if (vcc == NULL)
return (ENOMEM);
mtx_lock(&sc->mtx);
if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
/* stopped while we have analyzed the arguments */
error = EIO;
goto done;
}
if (sc->vccs[cid] != NULL) {
/* ups, already open */
error = EBUSY;
goto done;
}
/* check some parameters */
vcc->cid = cid;
vcc->vcc = arg->param;
vcc->vflags = 0;
vcc->rxhand = arg->rxhand;
switch (vcc->vcc.aal) {
case ATMIO_AAL_0:
case ATMIO_AAL_34:
case ATMIO_AAL_5:
break;
case ATMIO_AAL_RAW:
if (arg->param.vci == 0 &&
!(arg->param.flags & ATMIO_FLAG_NOTX)) {
error = EINVAL;
goto done;
}
break;
default:
error = EINVAL;
goto done;
}
switch (vcc->vcc.traffic) {
case ATMIO_TRAFFIC_VBR:
case ATMIO_TRAFFIC_UBR:
case ATMIO_TRAFFIC_CBR:
case ATMIO_TRAFFIC_ABR:
break;
default:
error = EINVAL;
goto done;
}
/* initialize */
vcc->chain = NULL;
vcc->last = NULL;
vcc->ibytes = vcc->ipackets = 0;
vcc->obytes = vcc->opackets = 0;
/* ask the TX and RX sides */
patm_debug(sc, VCC, "Open VCC: asking Rx/Tx");
if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX) &&
(error = patm_tx_vcc_can_open(sc, vcc)) != 0)
goto done;
if (!(vcc->vcc.flags & ATMIO_FLAG_NORX) &&
(error = patm_rx_vcc_can_open(sc, vcc)) != 0)
goto done;
/* ok - go ahead */
sc->vccs[cid] = vcc;
patm_load_vc(sc, vcc, 0);
/* don't free below */
vcc = NULL;
sc->vccs_open++;
/* done */
done:
mtx_unlock(&sc->mtx);
if (vcc != NULL)
uma_zfree(sc->vcc_zone, vcc);
return (error);
}
int
patm_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct ifreq *ifr = (struct ifreq *)data;
struct ifaddr *ifa = (struct ifaddr *)data;
struct patm_softc *sc = ifp->if_softc;
int error = 0;
uint32_t cfg;
struct atmio_vcctable *vtab;
switch (cmd) {
case SIOCSIFADDR:
mtx_lock(&sc->mtx);
ifp->if_flags |= IFF_UP;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
patm_initialize(sc);
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
case AF_INET6:
ifa->ifa_rtrequest = atm_rtrequest;
break;
#endif
default:
break;
}
mtx_unlock(&sc->mtx);
break;
case SIOCSIFFLAGS:
mtx_lock(&sc->mtx);
if (ifp->if_flags & IFF_UP) {
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
patm_initialize(sc);
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
patm_stop(sc);
}
}
mtx_unlock(&sc->mtx);
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->media, cmd);
/*
* We need to toggle unassigned/idle cells ourself because
* the 77252 generates null cells for spacing. When switching
* null cells of it gets the timing wrong.
*/
mtx_lock(&sc->mtx);
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
if (sc->utopia.state & UTP_ST_UNASS) {
if (!(sc->flags & PATM_UNASS)) {
cfg = patm_nor_read(sc, IDT_NOR_CFG);
cfg &= ~IDT_CFG_IDLECLP;
patm_nor_write(sc, IDT_NOR_CFG, cfg);
sc->flags |= PATM_UNASS;
}
} else {
if (sc->flags & PATM_UNASS) {
cfg = patm_nor_read(sc, IDT_NOR_CFG);
cfg |= IDT_CFG_IDLECLP;
patm_nor_write(sc, IDT_NOR_CFG, cfg);
sc->flags &= ~PATM_UNASS;
}
}
} else {
if (sc->utopia.state & UTP_ST_UNASS)
sc->flags |= PATM_UNASS;
else
sc->flags &= ~PATM_UNASS;
}
mtx_unlock(&sc->mtx);
break;
case SIOCSIFMTU:
/*
* Set the interface MTU.
*/
if (ifr->ifr_mtu > ATMMTU)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
case SIOCATMOPENVCC: /* kernel internal use */
error = patm_open_vcc(sc, (struct atmio_openvcc *)data);
break;
case SIOCATMCLOSEVCC: /* kernel internal use */
error = patm_close_vcc(sc, (struct atmio_closevcc *)data);
break;
case SIOCATMGVCCS: /* external use */
#ifdef CPU_CHERI
#error Unvalidatable ifr_data use. Unsafe with CheriABI.
#endif
/* return vcc table */
vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
sc->mmap->max_conn, sc->vccs_open, &sc->mtx, 1);
error = copyout(vtab, ifr->ifr_data, sizeof(*vtab) +
vtab->count * sizeof(vtab->vccs[0]));
free(vtab, M_DEVBUF);
break;
case SIOCATMGETVCCS: /* netgraph internal use */
vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
sc->mmap->max_conn, sc->vccs_open, &sc->mtx, 0);
if (vtab == NULL) {
error = ENOMEM;
break;
}
*(void **)data = vtab;
break;
default:
patm_debug(sc, IOCTL, "unknown cmd=%08lx arg=%p", cmd, data);
error = EINVAL;
break;
}
return (error);
}
/*
* Start the card. This assumes the mutex to be held
*/
void
patm_initialize(struct patm_softc *sc)
{
uint32_t cfg;
u_int i;
patm_debug(sc, ATTACH, "configuring...");
/* clear SRAM */
for (i = 0; i < sc->mmap->sram * 1024; i += 4)
patm_sram_write4(sc, i, 0, 0, 0, 0);
patm_scd_init(sc);
/* configuration register. Setting NOIDLE makes the timing wrong! */
cfg = IDT_CFG_TXFIFO9 | IDT_CFG_RXQ512 | PATM_CFG_VPI |
/* IDT_CFG_NOIDLE | */ sc->mmap->rxtab;
if (!(sc->flags & PATM_UNASS))
cfg |= IDT_CFG_IDLECLP;
patm_nor_write(sc, IDT_NOR_CFG, cfg);
/* clean all the status queues and the Raw handle */
memset(sc->tsq, 0, sc->sq_size);
/* initialize RSQ */
patm_debug(sc, ATTACH, "RSQ %llx", (unsigned long long)sc->rsq_phy);
patm_nor_write(sc, IDT_NOR_RSQB, sc->rsq_phy);
patm_nor_write(sc, IDT_NOR_RSQT, sc->rsq_phy);
patm_nor_write(sc, IDT_NOR_RSQH, 0);
sc->rsq_last = PATM_RSQ_SIZE - 1;
/* initialize TSTB */
patm_nor_write(sc, IDT_NOR_TSTB, sc->mmap->tst1base << 2);
patm_tst_init(sc);
/* initialize TSQ */
for (i = 0; i < IDT_TSQ_SIZE; i++)
sc->tsq[i].stamp = htole32(IDT_TSQE_EMPTY);
patm_nor_write(sc, IDT_NOR_TSQB, sc->tsq_phy);
patm_nor_write(sc, IDT_NOR_TSQH, 0);
patm_nor_write(sc, IDT_NOR_TSQT, 0);
sc->tsq_next = sc->tsq;
/* GP */
#if BYTE_ORDER == BIG_ENDIAN && 0
patm_nor_write(sc, IDT_NOR_GP, IDT_GP_BIGE);
#else
patm_nor_write(sc, IDT_NOR_GP, 0);
#endif
/* VPM */
patm_nor_write(sc, IDT_NOR_VPM, 0);
/* RxFIFO */
patm_nor_write(sc, IDT_NOR_RXFD,
IDT_RXFD(sc->mmap->rxfifo_addr, sc->mmap->rxfifo_code));
patm_nor_write(sc, IDT_NOR_RXFT, 0);
patm_nor_write(sc, IDT_NOR_RXFH, 0);
/* RAWHND */
patm_debug(sc, ATTACH, "RWH %llx",
(unsigned long long)sc->rawhnd_phy);
patm_nor_write(sc, IDT_NOR_RAWHND, sc->rawhnd_phy);
/* ABRSTD */
patm_nor_write(sc, IDT_NOR_ABRSTD,
IDT_ABRSTD(sc->mmap->abrstd_addr, sc->mmap->abrstd_code));
for (i = 0; i < sc->mmap->abrstd_size; i++)
patm_sram_write(sc, sc->mmap->abrstd_addr + i, 0);
patm_nor_write(sc, IDT_NOR_ABRRQ, 0);
patm_nor_write(sc, IDT_NOR_VBRRQ, 0);
/* rate tables */
if (sc->flags & PATM_25M) {
for (i = 0; i < patm_rtables_size; i++)
patm_sram_write(sc, sc->mmap->rtables + i,
patm_rtables25[i]);
} else {
for (i = 0; i < patm_rtables_size; i++)
patm_sram_write(sc, sc->mmap->rtables + i,
patm_rtables155[i]);
}
patm_nor_write(sc, IDT_NOR_RTBL, sc->mmap->rtables << 2);
/* Maximum deficit */
patm_nor_write(sc, IDT_NOR_MXDFCT, 32 | IDT_MDFCT_LCI | IDT_MDFCT_LNI);
/* Free buffer queues */
patm_nor_write(sc, IDT_NOR_FBQP0, 0);
patm_nor_write(sc, IDT_NOR_FBQP1, 0);
patm_nor_write(sc, IDT_NOR_FBQP2, 0);
patm_nor_write(sc, IDT_NOR_FBQP3, 0);
patm_nor_write(sc, IDT_NOR_FBQWP0, 0);
patm_nor_write(sc, IDT_NOR_FBQWP1, 0);
patm_nor_write(sc, IDT_NOR_FBQWP2, 0);
patm_nor_write(sc, IDT_NOR_FBQWP3, 0);
patm_nor_write(sc, IDT_NOR_FBQS0,
(SMBUF_THRESHOLD << 28) |
(SMBUF_NI_THRESH << 24) |
(SMBUF_CI_THRESH << 20) |
SMBUF_CELLS);
patm_nor_write(sc, IDT_NOR_FBQS1,
(LMBUF_THRESHOLD << 28) |
(LMBUF_NI_THRESH << 24) |
(LMBUF_CI_THRESH << 20) |
LMBUF_CELLS);
patm_nor_write(sc, IDT_NOR_FBQS2,
(VMBUF_THRESHOLD << 28) | VMBUF_CELLS);
patm_nor_write(sc, IDT_NOR_FBQS3, 0);
/* make SCD0 for UBR0 */
if ((sc->scd0 = patm_scd_alloc(sc)) == NULL) {
patm_printf(sc, "cannot create UBR0 SCD\n");
patm_reset(sc);
return;
}
sc->scd0->q.ifq_maxlen = PATM_DLFT_MAXQ;
patm_scd_setup(sc, sc->scd0);
patm_tct_setup(sc, sc->scd0, NULL);
patm_debug(sc, ATTACH, "go...");
sc->utopia.flags &= ~UTP_FL_POLL_CARRIER;
sc->ifp->if_drv_flags |= IFF_DRV_RUNNING;
/* enable interrupts, Tx and Rx paths */
cfg |= IDT_CFG_RXPTH | IDT_CFG_RXIIMM | IDT_CFG_RAWIE | IDT_CFG_RQFIE |
IDT_CFG_TIMOIE | IDT_CFG_FBIE | IDT_CFG_TXENB | IDT_CFG_TXINT |
IDT_CFG_TXUIE | IDT_CFG_TXSFI | IDT_CFG_PHYIE;
patm_nor_write(sc, IDT_NOR_CFG, cfg);
for (i = 0; i < sc->mmap->max_conn; i++)
if (sc->vccs[i] != NULL)
patm_load_vc(sc, sc->vccs[i], 1);
ATMEV_SEND_IFSTATE_CHANGED(IFP2IFATM(sc->ifp),
sc->utopia.carrier == UTP_CARR_OK);
}
/*
* Stop the interface
*/
void
patm_stop(struct patm_softc *sc)
{
u_int i;
struct mbuf *m;
struct patm_txmap *map;
struct patm_scd *scd;
sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
sc->utopia.flags |= UTP_FL_POLL_CARRIER;
patm_reset(sc);
mtx_lock(&sc->tst_lock);
i = sc->tst_state;
sc->tst_state = 0;
callout_stop(&sc->tst_callout);
mtx_unlock(&sc->tst_lock);
if (i != 0) {
/* this means we are just entering or leaving the timeout.
* wait a little bit. Doing this correctly would be more
* involved */
DELAY(1000);
}
/*
* Give any waiters on closing a VCC a chance. They will stop
* to wait if they see that IFF_DRV_RUNNING disappeared.
*/
cv_broadcast(&sc->vcc_cv);
/* free large buffers */
patm_debug(sc, ATTACH, "freeing large buffers...");
for (i = 0; i < sc->lbuf_max; i++)
if (sc->lbufs[i].m != NULL)
patm_lbuf_free(sc, &sc->lbufs[i]);
/* free small buffers that are on the card */
patm_debug(sc, ATTACH, "freeing small buffers...");
mbp_card_free(sc->sbuf_pool);
/* free aal0 buffers that are on the card */
patm_debug(sc, ATTACH, "freeing aal0 buffers...");
mbp_card_free(sc->vbuf_pool);
/* freeing partial receive chains and reset vcc state */
for (i = 0; i < sc->mmap->max_conn; i++) {
if (sc->vccs[i] != NULL) {
if (sc->vccs[i]->chain != NULL) {
m_freem(sc->vccs[i]->chain);
sc->vccs[i]->chain = NULL;
sc->vccs[i]->last = NULL;
}
if (sc->vccs[i]->vflags & (PATM_VCC_RX_CLOSING |
PATM_VCC_TX_CLOSING)) {
uma_zfree(sc->vcc_zone, sc->vccs[i]);
sc->vccs[i] = NULL;
} else {
/* keep */
sc->vccs[i]->vflags &= ~PATM_VCC_OPEN;
sc->vccs[i]->cps = 0;
sc->vccs[i]->scd = NULL;
}
}
}
/* stop all active SCDs */
while ((scd = LIST_FIRST(&sc->scd_list)) != NULL) {
/* free queue packets */
for (;;) {
_IF_DEQUEUE(&scd->q, m);
if (m == NULL)
break;
m_freem(m);
}
/* free transmitting packets */
for (i = 0; i < IDT_TSQE_TAG_SPACE; i++) {
if ((m = scd->on_card[i]) != NULL) {
scd->on_card[i] = 0;
map = m->m_pkthdr.header;
bus_dmamap_unload(sc->tx_tag, map->map);
SLIST_INSERT_HEAD(&sc->tx_maps_free, map, link);
m_freem(m);
}
}
patm_scd_free(sc, scd);
}
sc->scd0 = NULL;
sc->flags &= ~PATM_CLR;
/* reset raw cell queue */
sc->rawh = NULL;
ATMEV_SEND_IFSTATE_CHANGED(IFP2IFATM(sc->ifp),
sc->utopia.carrier == UTP_CARR_OK);
}