FreeBSD-5.3/sys/dev/hatm/if_hatm_tx.c
/*
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* 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.
*
* Author: Hartmut Brandt <harti@freebsd.org>
*
* ForeHE driver.
*
* Transmission.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/hatm/if_hatm_tx.c,v 1.9 2003/11/05 11:43:06 harti Exp $");
#include "opt_inet.h"
#include "opt_natm.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/errno.h>
#include <sys/conf.h>
#include <sys/module.h>
#include <sys/queue.h>
#include <sys/syslog.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <vm/uma.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/if_atm.h>
#include <net/route.h>
#ifdef ENABLE_BPF
#include <net/bpf.h>
#endif
#include <netinet/in.h>
#include <netinet/if_atm.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/utopia/utopia.h>
#include <dev/hatm/if_hatmconf.h>
#include <dev/hatm/if_hatmreg.h>
#include <dev/hatm/if_hatmvar.h>
/*
* These macros are used to trace the flow of transmit mbufs and to
* detect transmit mbuf leaks in the driver.
*/
#ifdef HATM_DEBUG
#define hatm_free_txmbuf(SC) \
do { \
if (--sc->txmbuf < 0) \
DBG(sc, TX, ("txmbuf below 0!")); \
else if (sc->txmbuf == 0) \
DBG(sc, TX, ("txmbuf now 0")); \
} while (0)
#define hatm_get_txmbuf(SC) \
do { \
if (++sc->txmbuf > 20000) \
DBG(sc, TX ("txmbuf %u", sc->txmbuf)); \
else if (sc->txmbuf == 1) \
DBG(sc, TX, ("txmbuf leaves 0")); \
} while (0)
#else
#define hatm_free_txmbuf(SC) do { } while (0)
#define hatm_get_txmbuf(SC) do { } while (0)
#endif
/*
* Allocate a new TPD, zero the TPD part. Cannot return NULL if
* flag is 0. The TPD is removed from the free list and its used
* bit is set.
*/
static struct tpd *
hatm_alloc_tpd(struct hatm_softc *sc, u_int flags)
{
struct tpd *t;
/* if we allocate a transmit TPD check for the reserve */
if (flags & M_NOWAIT) {
if (sc->tpd_nfree <= HE_CONFIG_TPD_RESERVE)
return (NULL);
} else {
if (sc->tpd_nfree == 0)
return (NULL);
}
/* make it beeing used */
t = SLIST_FIRST(&sc->tpd_free);
KASSERT(t != NULL, ("tpd botch"));
SLIST_REMOVE_HEAD(&sc->tpd_free, link);
TPD_SET_USED(sc, t->no);
sc->tpd_nfree--;
/* initialize */
t->mbuf = NULL;
t->cid = 0;
bzero(&t->tpd, sizeof(t->tpd));
t->tpd.addr = t->no << HE_REGS_TPD_ADDR;
return (t);
}
/*
* Free a TPD. If the mbuf pointer in that TPD is not zero, it is assumed, that
* the DMA map of this TPD was used to load this mbuf. The map is unloaded
* and the mbuf is freed. The TPD is put back onto the free list and
* its used bit is cleared.
*/
static void
hatm_free_tpd(struct hatm_softc *sc, struct tpd *tpd)
{
if (tpd->mbuf != NULL) {
bus_dmamap_unload(sc->tx_tag, tpd->map);
hatm_free_txmbuf(sc);
m_freem(tpd->mbuf);
tpd->mbuf = NULL;
}
/* insert TPD into free list */
SLIST_INSERT_HEAD(&sc->tpd_free, tpd, link);
TPD_CLR_USED(sc, tpd->no);
sc->tpd_nfree++;
}
/*
* Queue a number of TPD. If there is not enough space none of the TPDs
* is queued and an error code is returned.
*/
static int
hatm_queue_tpds(struct hatm_softc *sc, u_int count, struct tpd **list,
u_int cid)
{
u_int space;
u_int i;
if (count >= sc->tpdrq.size) {
sc->istats.tdprq_full++;
return (EBUSY);
}
if (sc->tpdrq.tail < sc->tpdrq.head)
space = sc->tpdrq.head - sc->tpdrq.tail;
else
space = sc->tpdrq.head - sc->tpdrq.tail + sc->tpdrq.size;
if (space <= count) {
sc->tpdrq.head =
(READ4(sc, HE_REGO_TPDRQ_H) >> HE_REGS_TPDRQ_H_H) &
(sc->tpdrq.size - 1);
if (sc->tpdrq.tail < sc->tpdrq.head)
space = sc->tpdrq.head - sc->tpdrq.tail;
else
space = sc->tpdrq.head - sc->tpdrq.tail +
sc->tpdrq.size;
if (space <= count) {
if_printf(&sc->ifatm.ifnet, "TPDRQ full\n");
sc->istats.tdprq_full++;
return (EBUSY);
}
}
/* we are going to write to the TPD queue space */
bus_dmamap_sync(sc->tpdrq.mem.tag, sc->tpdrq.mem.map,
BUS_DMASYNC_PREWRITE);
/* put the entries into the TPD space */
for (i = 0; i < count; i++) {
/* we are going to 'write' the TPD to the device */
bus_dmamap_sync(sc->tpds.tag, sc->tpds.map,
BUS_DMASYNC_PREWRITE);
sc->tpdrq.tpdrq[sc->tpdrq.tail].tpd =
sc->tpds.paddr + HE_TPD_SIZE * list[i]->no;
sc->tpdrq.tpdrq[sc->tpdrq.tail].cid = cid;
if (++sc->tpdrq.tail == sc->tpdrq.size)
sc->tpdrq.tail = 0;
}
/* update tail pointer */
WRITE4(sc, HE_REGO_TPDRQ_T, (sc->tpdrq.tail << HE_REGS_TPDRQ_T_T));
return (0);
}
/*
* Helper struct for communication with the DMA load helper.
*/
struct load_txbuf_arg {
struct hatm_softc *sc;
struct tpd *first;
struct mbuf *mbuf;
struct hevcc *vcc;
int error;
u_int pti;
u_int vpi, vci;
};
/*
* Loader callback for the mbuf. This function allocates the TPDs and
* fills them. It puts the dmamap and and the mbuf pointer into the last
* TPD and then tries to queue all the TPDs. If anything fails, all TPDs
* allocated by this function are freed and the error flag is set in the
* argument structure. The first TPD must then be freed by the caller.
*/
static void
hatm_load_txbuf(void *uarg, bus_dma_segment_t *segs, int nseg,
bus_size_t mapsize, int error)
{
struct load_txbuf_arg *arg = uarg;
u_int tpds_needed, i, n, tpd_cnt;
int need_intr;
struct tpd *tpd;
struct tpd *tpd_list[HE_CONFIG_MAX_TPD_PER_PACKET];
if (error != 0) {
DBG(arg->sc, DMA, ("%s -- error=%d plen=%d\n",
__func__, error, arg->mbuf->m_pkthdr.len));
return;
}
/* ensure, we have enough TPDs (remember, we already have one) */
tpds_needed = (nseg + 2) / 3;
if (HE_CONFIG_TPD_RESERVE + tpds_needed - 1 > arg->sc->tpd_nfree) {
if_printf(&arg->sc->ifatm.ifnet, "%s -- out of TPDs (need %d, "
"have %u)\n", __func__, tpds_needed - 1,
arg->sc->tpd_nfree + 1);
arg->error = 1;
return;
}
/*
* Check for the maximum number of TPDs on the connection.
*/
need_intr = 0;
if (arg->sc->max_tpd > 0) {
if (arg->vcc->ntpds + tpds_needed > arg->sc->max_tpd) {
arg->sc->istats.flow_closed++;
arg->vcc->vflags |= HE_VCC_FLOW_CTRL;
ATMEV_SEND_FLOW_CONTROL(&arg->sc->ifatm,
arg->vpi, arg->vci, 1);
arg->error = 1;
return;
}
if (arg->vcc->ntpds + tpds_needed >
(9 * arg->sc->max_tpd) / 10)
need_intr = 1;
}
tpd = arg->first;
tpd_cnt = 0;
tpd_list[tpd_cnt++] = tpd;
for (i = n = 0; i < nseg; i++, n++) {
if (n == 3) {
if ((tpd = hatm_alloc_tpd(arg->sc, M_NOWAIT)) == NULL)
/* may not fail (see check above) */
panic("%s: out of TPDs", __func__);
tpd->cid = arg->first->cid;
tpd->tpd.addr |= arg->pti;
tpd_list[tpd_cnt++] = tpd;
n = 0;
}
KASSERT(segs[i].ds_addr <= 0xffffffffLU,
("phys addr too large %lx", (u_long)segs[i].ds_addr));
DBG(arg->sc, DMA, ("DMA loaded: %lx/%lu",
(u_long)segs[i].ds_addr, (u_long)segs[i].ds_len));
tpd->tpd.bufs[n].addr = segs[i].ds_addr;
tpd->tpd.bufs[n].len = segs[i].ds_len;
DBG(arg->sc, TX, ("seg[%u]=tpd[%u,%u]=%x/%u", i,
tpd_cnt, n, tpd->tpd.bufs[n].addr, tpd->tpd.bufs[n].len));
if (i == nseg - 1)
tpd->tpd.bufs[n].len |= HE_REGM_TPD_LST;
}
/*
* Swap the MAP in the first and the last TPD and set the mbuf
* pointer into the last TPD. We use the map in the last TPD, because
* the map must stay valid until the last TPD is processed by the card.
*/
if (tpd_cnt > 1) {
bus_dmamap_t tmp;
tmp = arg->first->map;
arg->first->map = tpd_list[tpd_cnt - 1]->map;
tpd_list[tpd_cnt - 1]->map = tmp;
}
tpd_list[tpd_cnt - 1]->mbuf = arg->mbuf;
if (need_intr)
tpd_list[tpd_cnt - 1]->tpd.addr |= HE_REGM_TPD_INTR;
/* queue the TPDs */
if (hatm_queue_tpds(arg->sc, tpd_cnt, tpd_list, arg->first->cid)) {
/* free all, except the first TPD */
for (i = 1; i < tpd_cnt; i++)
hatm_free_tpd(arg->sc, tpd_list[i]);
arg->error = 1;
return;
}
arg->vcc->ntpds += tpd_cnt;
}
/*
* Start output on the interface
*/
void
hatm_start(struct ifnet *ifp)
{
struct hatm_softc *sc = (struct hatm_softc *)ifp->if_softc;
struct mbuf *m;
struct atm_pseudohdr *aph;
u_int cid;
struct tpd *tpd;
struct load_txbuf_arg arg;
u_int len;
int error;
if (!(ifp->if_flags & IFF_RUNNING))
return;
mtx_lock(&sc->mtx);
arg.sc = sc;
while (1) {
IF_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
break;
hatm_get_txmbuf(sc);
if (m->m_len < sizeof(*aph))
if ((m = m_pullup(m, sizeof(*aph))) == NULL) {
hatm_free_txmbuf(sc);
continue;
}
aph = mtod(m, struct atm_pseudohdr *);
arg.vci = ATM_PH_VCI(aph);
arg.vpi = ATM_PH_VPI(aph);
m_adj(m, sizeof(*aph));
if ((len = m->m_pkthdr.len) == 0) {
hatm_free_txmbuf(sc);
m_freem(m);
continue;
}
if ((arg.vpi & ~HE_VPI_MASK) || (arg.vci & ~HE_VCI_MASK) ||
(arg.vci == 0)) {
hatm_free_txmbuf(sc);
m_freem(m);
continue;
}
cid = HE_CID(arg.vpi, arg.vci);
arg.vcc = sc->vccs[cid];
if (arg.vcc == NULL || !(arg.vcc->vflags & HE_VCC_OPEN)) {
hatm_free_txmbuf(sc);
m_freem(m);
continue;
}
if (arg.vcc->vflags & HE_VCC_FLOW_CTRL) {
hatm_free_txmbuf(sc);
m_freem(m);
sc->istats.flow_drop++;
continue;
}
arg.pti = 0;
if (arg.vcc->param.aal == ATMIO_AAL_RAW) {
if (len < 52) {
/* too short */
hatm_free_txmbuf(sc);
m_freem(m);
continue;
}
/*
* Get the header and ignore except
* payload type and CLP.
*/
if (m->m_len < 4 && (m = m_pullup(m, 4)) == NULL) {
hatm_free_txmbuf(sc);
continue;
}
arg.pti = mtod(m, u_char *)[3] & 0xf;
arg.pti = ((arg.pti & 0xe) << 2) | ((arg.pti & 1) << 1);
m_adj(m, 4);
len -= 4;
if (len % 48 != 0) {
m_adj(m, -((int)(len % 48)));
len -= len % 48;
}
}
#ifdef ENABLE_BPF
if (!(arg.vcc->param.flags & ATMIO_FLAG_NG) &&
(arg.vcc->param.aal == ATMIO_AAL_5) &&
(arg.vcc->param.flags & ATM_PH_LLCSNAP))
BPF_MTAP(ifp, m);
#endif
/* Now load a DMA map with the packet. Allocate the first
* TPD to get a map. Additional TPDs may be allocated by the
* callback. */
if ((tpd = hatm_alloc_tpd(sc, M_NOWAIT)) == NULL) {
hatm_free_txmbuf(sc);
m_freem(m);
sc->ifatm.ifnet.if_oerrors++;
continue;
}
tpd->cid = cid;
tpd->tpd.addr |= arg.pti;
arg.first = tpd;
arg.error = 0;
arg.mbuf = m;
error = bus_dmamap_load_mbuf(sc->tx_tag, tpd->map, m,
hatm_load_txbuf, &arg, BUS_DMA_NOWAIT);
if (error == EFBIG) {
/* try to defragment the packet */
sc->istats.defrag++;
m = m_defrag(m, M_DONTWAIT);
if (m == NULL) {
tpd->mbuf = NULL;
hatm_free_txmbuf(sc);
hatm_free_tpd(sc, tpd);
sc->ifatm.ifnet.if_oerrors++;
continue;
}
arg.mbuf = m;
error = bus_dmamap_load_mbuf(sc->tx_tag, tpd->map, m,
hatm_load_txbuf, &arg, BUS_DMA_NOWAIT);
}
if (error != 0) {
if_printf(&sc->ifatm.ifnet, "mbuf loaded error=%d\n",
error);
hatm_free_tpd(sc, tpd);
sc->ifatm.ifnet.if_oerrors++;
continue;
}
if (arg.error) {
hatm_free_tpd(sc, tpd);
sc->ifatm.ifnet.if_oerrors++;
continue;
}
arg.vcc->opackets++;
arg.vcc->obytes += len;
sc->ifatm.ifnet.if_opackets++;
}
mtx_unlock(&sc->mtx);
}
void
hatm_tx_complete(struct hatm_softc *sc, struct tpd *tpd, uint32_t flags)
{
struct hevcc *vcc = sc->vccs[tpd->cid];
DBG(sc, TX, ("tx_complete cid=%#x flags=%#x", tpd->cid, flags));
if (vcc == NULL)
return;
if ((flags & HE_REGM_TBRQ_EOS) && (vcc->vflags & HE_VCC_TX_CLOSING)) {
vcc->vflags &= ~HE_VCC_TX_CLOSING;
if (vcc->param.flags & ATMIO_FLAG_ASYNC) {
hatm_tx_vcc_closed(sc, tpd->cid);
if (!(vcc->vflags & HE_VCC_OPEN)) {
hatm_vcc_closed(sc, tpd->cid);
vcc = NULL;
}
} else
cv_signal(&sc->vcc_cv);
}
hatm_free_tpd(sc, tpd);
if (vcc == NULL)
return;
vcc->ntpds--;
if ((vcc->vflags & HE_VCC_FLOW_CTRL) &&
vcc->ntpds <= HE_CONFIG_TPD_FLOW_ENB) {
vcc->vflags &= ~HE_VCC_FLOW_CTRL;
ATMEV_SEND_FLOW_CONTROL(&sc->ifatm,
HE_VPI(tpd->cid), HE_VCI(tpd->cid), 0);
}
}
/*
* Convert CPS to Rate for a rate group
*/
static u_int
cps_to_rate(struct hatm_softc *sc, uint32_t cps)
{
u_int clk = sc->he622 ? HE_622_CLOCK : HE_155_CLOCK;
u_int period, rate;
/* how many double ticks between two cells */
period = (clk + 2 * cps - 1) / (2 * cps);
rate = hatm_cps2atmf(period);
if (hatm_atmf2cps(rate) < period)
rate++;
return (rate);
}
/*
* Check whether the VCC is really closed on the hardware and available for
* open. Check that we have enough resources. If this function returns ok,
* a later actual open must succeed. Assume, that we are locked between this
* function and the next one, so that nothing does change. For CBR this
* assigns the rate group and set the rate group's parameter.
*/
int
hatm_tx_vcc_can_open(struct hatm_softc *sc, u_int cid, struct hevcc *vcc)
{
uint32_t v, line_rate;
u_int rc, idx, free_idx;
struct atmio_tparam *t = &vcc->param.tparam;
/* verify that connection is closed */
#if 0
v = READ_TSR(sc, cid, 4);
if(!(v & HE_REGM_TSR4_SESS_END)) {
if_printf(&sc->ifatm.ifnet, "cid=%#x not closed (TSR4)\n", cid);
return (EBUSY);
}
#endif
v = READ_TSR(sc, cid, 0);
if((v & HE_REGM_TSR0_CONN_STATE) != 0) {
if_printf(&sc->ifatm.ifnet, "cid=%#x not closed (TSR0=%#x)\n",
cid, v);
return (EBUSY);
}
/* check traffic parameters */
line_rate = sc->he622 ? ATM_RATE_622M : ATM_RATE_155M;
switch (vcc->param.traffic) {
case ATMIO_TRAFFIC_UBR:
if (t->pcr == 0 || t->pcr > line_rate)
t->pcr = line_rate;
if (t->mcr != 0 || t->icr != 0 || t->tbe != 0 || t->nrm != 0 ||
t->trm != 0 || t->adtf != 0 || t->rif != 0 || t->rdf != 0 ||
t->cdf != 0)
return (EINVAL);
break;
case ATMIO_TRAFFIC_CBR:
/*
* Compute rate group index
*/
if (t->pcr < 10)
t->pcr = 10;
if (sc->cbr_bw + t->pcr > line_rate)
return (EINVAL);
if (t->mcr != 0 || t->icr != 0 || t->tbe != 0 || t->nrm != 0 ||
t->trm != 0 || t->adtf != 0 || t->rif != 0 || t->rdf != 0 ||
t->cdf != 0)
return (EINVAL);
rc = cps_to_rate(sc, t->pcr);
free_idx = HE_REGN_CS_STPER;
for (idx = 0; idx < HE_REGN_CS_STPER; idx++) {
if (sc->rate_ctrl[idx].refcnt == 0) {
if (free_idx == HE_REGN_CS_STPER)
free_idx = idx;
} else {
if (sc->rate_ctrl[idx].rate == rc)
break;
}
}
if (idx == HE_REGN_CS_STPER) {
if ((idx = free_idx) == HE_REGN_CS_STPER)
return (EBUSY);
sc->rate_ctrl[idx].rate = rc;
}
vcc->rc = idx;
/* commit */
sc->rate_ctrl[idx].refcnt++;
sc->cbr_bw += t->pcr;
break;
case ATMIO_TRAFFIC_ABR:
if (t->pcr > line_rate)
t->pcr = line_rate;
if (t->mcr > line_rate)
t->mcr = line_rate;
if (t->icr > line_rate)
t->icr = line_rate;
if (t->tbe == 0 || t->tbe >= 1 << 24 || t->nrm > 7 ||
t->trm > 7 || t->adtf >= 1 << 10 || t->rif > 15 ||
t->rdf > 15 || t->cdf > 7)
return (EINVAL);
break;
default:
return (EINVAL);
}
return (0);
}
#define NRM_CODE2VAL(CODE) (2 * (1 << (CODE)))
/*
* Actually open the transmit VCC
*/
void
hatm_tx_vcc_open(struct hatm_softc *sc, u_int cid)
{
struct hevcc *vcc = sc->vccs[cid];
uint32_t tsr0, tsr4, atmf, crm;
const struct atmio_tparam *t = &vcc->param.tparam;
if (vcc->param.aal == ATMIO_AAL_5) {
tsr0 = HE_REGM_TSR0_AAL_5 << HE_REGS_TSR0_AAL;
tsr4 = HE_REGM_TSR4_AAL_5 << HE_REGS_TSR4_AAL;
} else {
tsr0 = HE_REGM_TSR0_AAL_0 << HE_REGS_TSR0_AAL;
tsr4 = HE_REGM_TSR4_AAL_0 << HE_REGS_TSR4_AAL;
}
tsr4 |= 1;
switch (vcc->param.traffic) {
case ATMIO_TRAFFIC_UBR:
atmf = hatm_cps2atmf(t->pcr);
tsr0 |= HE_REGM_TSR0_TRAFFIC_UBR << HE_REGS_TSR0_TRAFFIC;
tsr0 |= HE_REGM_TSR0_USE_WMIN | HE_REGM_TSR0_UPDATE_GER;
WRITE_TSR(sc, cid, 0, 0xf, tsr0);
WRITE_TSR(sc, cid, 4, 0xf, tsr4);
WRITE_TSR(sc, cid, 1, 0xf, (atmf << HE_REGS_TSR1_PCR));
WRITE_TSR(sc, cid, 2, 0xf, (atmf << HE_REGS_TSR2_ACR));
WRITE_TSR(sc, cid, 9, 0xf, HE_REGM_TSR9_INIT);
WRITE_TSR(sc, cid, 3, 0xf, 0);
WRITE_TSR(sc, cid, 5, 0xf, 0);
WRITE_TSR(sc, cid, 6, 0xf, 0);
WRITE_TSR(sc, cid, 7, 0xf, 0);
WRITE_TSR(sc, cid, 8, 0xf, 0);
WRITE_TSR(sc, cid, 10, 0xf, 0);
WRITE_TSR(sc, cid, 11, 0xf, 0);
WRITE_TSR(sc, cid, 12, 0xf, 0);
WRITE_TSR(sc, cid, 13, 0xf, 0);
WRITE_TSR(sc, cid, 14, 0xf, 0);
break;
case ATMIO_TRAFFIC_CBR:
atmf = hatm_cps2atmf(t->pcr);
if (sc->rate_ctrl[vcc->rc].refcnt == 1)
WRITE_MBOX4(sc, HE_REGO_CS_STPER(vcc->rc),
sc->rate_ctrl[vcc->rc].rate);
tsr0 |= HE_REGM_TSR0_TRAFFIC_CBR << HE_REGS_TSR0_TRAFFIC;
tsr0 |= vcc->rc;
WRITE_TSR(sc, cid, 1, 0xf, (atmf << HE_REGS_TSR1_PCR));
WRITE_TSR(sc, cid, 2, 0xf, (atmf << HE_REGS_TSR2_ACR));
WRITE_TSR(sc, cid, 3, 0xf, 0);
WRITE_TSR(sc, cid, 5, 0xf, 0);
WRITE_TSR(sc, cid, 6, 0xf, 0);
WRITE_TSR(sc, cid, 7, 0xf, 0);
WRITE_TSR(sc, cid, 8, 0xf, 0);
WRITE_TSR(sc, cid, 10, 0xf, 0);
WRITE_TSR(sc, cid, 11, 0xf, 0);
WRITE_TSR(sc, cid, 12, 0xf, 0);
WRITE_TSR(sc, cid, 13, 0xf, 0);
WRITE_TSR(sc, cid, 14, 0xf, 0);
WRITE_TSR(sc, cid, 4, 0xf, tsr4);
WRITE_TSR(sc, cid, 9, 0xf, HE_REGM_TSR9_INIT);
WRITE_TSR(sc, cid, 0, 0xf, tsr0);
break;
case ATMIO_TRAFFIC_ABR:
if ((crm = t->tbe / NRM_CODE2VAL(t->nrm)) > 0xffff)
crm = 0xffff;
tsr0 |= HE_REGM_TSR0_TRAFFIC_ABR << HE_REGS_TSR0_TRAFFIC;
tsr0 |= HE_REGM_TSR0_USE_WMIN | HE_REGM_TSR0_UPDATE_GER;
WRITE_TSR(sc, cid, 0, 0xf, tsr0);
WRITE_TSR(sc, cid, 4, 0xf, tsr4);
WRITE_TSR(sc, cid, 1, 0xf,
((hatm_cps2atmf(t->pcr) << HE_REGS_TSR1_PCR) |
(hatm_cps2atmf(t->mcr) << HE_REGS_TSR1_MCR)));
WRITE_TSR(sc, cid, 2, 0xf,
(hatm_cps2atmf(t->icr) << HE_REGS_TSR2_ACR));
WRITE_TSR(sc, cid, 3, 0xf,
((NRM_CODE2VAL(t->nrm) - 1) << HE_REGS_TSR3_NRM) |
(crm << HE_REGS_TSR3_CRM));
WRITE_TSR(sc, cid, 5, 0xf, 0);
WRITE_TSR(sc, cid, 6, 0xf, 0);
WRITE_TSR(sc, cid, 7, 0xf, 0);
WRITE_TSR(sc, cid, 8, 0xf, 0);
WRITE_TSR(sc, cid, 10, 0xf, 0);
WRITE_TSR(sc, cid, 12, 0xf, 0);
WRITE_TSR(sc, cid, 14, 0xf, 0);
WRITE_TSR(sc, cid, 9, 0xf, HE_REGM_TSR9_INIT);
WRITE_TSR(sc, cid, 11, 0xf,
(hatm_cps2atmf(t->icr) << HE_REGS_TSR11_ICR) |
(t->trm << HE_REGS_TSR11_TRM) |
(t->nrm << HE_REGS_TSR11_NRM) |
(t->adtf << HE_REGS_TSR11_ADTF));
WRITE_TSR(sc, cid, 13, 0xf,
(t->rdf << HE_REGS_TSR13_RDF) |
(t->rif << HE_REGS_TSR13_RIF) |
(t->cdf << HE_REGS_TSR13_CDF) |
(crm << HE_REGS_TSR13_CRM));
break;
default:
return;
}
vcc->vflags |= HE_VCC_TX_OPEN;
}
/*
* Close the TX side of a VCC. Set the CLOSING flag.
*/
void
hatm_tx_vcc_close(struct hatm_softc *sc, u_int cid)
{
struct hevcc *vcc = sc->vccs[cid];
struct tpd *tpd_list[1];
u_int i, pcr = 0;
WRITE_TSR(sc, cid, 4, 0x8, HE_REGM_TSR4_FLUSH);
switch (vcc->param.traffic) {
case ATMIO_TRAFFIC_CBR:
WRITE_TSR(sc, cid, 14, 0x8, HE_REGM_TSR14_CBR_DELETE);
break;
case ATMIO_TRAFFIC_ABR:
WRITE_TSR(sc, cid, 14, 0x4, HE_REGM_TSR14_ABR_CLOSE);
pcr = vcc->param.tparam.pcr;
/* FALL THROUGH */
case ATMIO_TRAFFIC_UBR:
WRITE_TSR(sc, cid, 1, 0xf,
hatm_cps2atmf(HE_CONFIG_FLUSH_RATE) << HE_REGS_TSR1_MCR |
hatm_cps2atmf(pcr) << HE_REGS_TSR1_PCR);
break;
}
tpd_list[0] = hatm_alloc_tpd(sc, 0);
tpd_list[0]->tpd.addr |= HE_REGM_TPD_EOS | HE_REGM_TPD_INTR;
tpd_list[0]->cid = cid;
vcc->vflags |= HE_VCC_TX_CLOSING;
vcc->vflags &= ~HE_VCC_TX_OPEN;
i = 0;
while (hatm_queue_tpds(sc, 1, tpd_list, cid) != 0) {
if (++i == 1000)
panic("TPDRQ permanently full");
DELAY(1000);
}
}
void
hatm_tx_vcc_closed(struct hatm_softc *sc, u_int cid)
{
if (sc->vccs[cid]->param.traffic == ATMIO_TRAFFIC_CBR) {
sc->cbr_bw -= sc->vccs[cid]->param.tparam.pcr;
sc->rate_ctrl[sc->vccs[cid]->rc].refcnt--;
}
}