1139749Simp/*- 2116491Sharti * Copyright (c) 2001-2003 3116491Sharti * Fraunhofer Institute for Open Communication Systems (FhG Fokus). 4116491Sharti * All rights reserved. 5116491Sharti * 6116491Sharti * Redistribution and use in source and binary forms, with or without 7116491Sharti * modification, are permitted provided that the following conditions 8116491Sharti * are met: 9116491Sharti * 1. Redistributions of source code must retain the above copyright 10116491Sharti * notice, this list of conditions and the following disclaimer. 11116491Sharti * 2. Redistributions in binary form must reproduce the above copyright 12116491Sharti * notice, this list of conditions and the following disclaimer in the 13116491Sharti * documentation and/or other materials provided with the distribution. 14116491Sharti * 15116491Sharti * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16116491Sharti * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17116491Sharti * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18116491Sharti * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19116491Sharti * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20116491Sharti * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21116491Sharti * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22116491Sharti * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23116491Sharti * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24116491Sharti * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25116491Sharti * SUCH DAMAGE. 26116491Sharti * 27116491Sharti * Author: Hartmut Brandt <harti@freebsd.org> 28116491Sharti * 29116491Sharti * ForeHE driver. 30116491Sharti * 31116491Sharti * Transmission. 32116491Sharti */ 33116491Sharti 34116519Sharti#include <sys/cdefs.h> 35116519Sharti__FBSDID("$FreeBSD$"); 36116519Sharti 37116491Sharti#include "opt_inet.h" 38116491Sharti#include "opt_natm.h" 39116491Sharti 40116491Sharti#include <sys/types.h> 41116491Sharti#include <sys/param.h> 42116491Sharti#include <sys/systm.h> 43116491Sharti#include <sys/kernel.h> 44116491Sharti#include <sys/malloc.h> 45116491Sharti#include <sys/bus.h> 46116491Sharti#include <sys/errno.h> 47116491Sharti#include <sys/conf.h> 48116491Sharti#include <sys/module.h> 49116491Sharti#include <sys/queue.h> 50116491Sharti#include <sys/syslog.h> 51116491Sharti#include <sys/condvar.h> 52116491Sharti#include <sys/sysctl.h> 53116491Sharti#include <vm/uma.h> 54116491Sharti 55116491Sharti#include <sys/sockio.h> 56116491Sharti#include <sys/mbuf.h> 57116491Sharti#include <sys/socket.h> 58116491Sharti 59116491Sharti#include <net/if.h> 60116491Sharti#include <net/if_media.h> 61116491Sharti#include <net/if_atm.h> 62116491Sharti#include <net/route.h> 63116491Sharti#ifdef ENABLE_BPF 64116491Sharti#include <net/bpf.h> 65116491Sharti#endif 66116491Sharti#include <netinet/in.h> 67116491Sharti#include <netinet/if_atm.h> 68116491Sharti 69116491Sharti#include <machine/bus.h> 70116491Sharti#include <machine/resource.h> 71116491Sharti#include <sys/bus.h> 72116491Sharti#include <sys/rman.h> 73119280Simp#include <dev/pci/pcireg.h> 74119280Simp#include <dev/pci/pcivar.h> 75116491Sharti 76116491Sharti#include <dev/utopia/utopia.h> 77116491Sharti#include <dev/hatm/if_hatmconf.h> 78116491Sharti#include <dev/hatm/if_hatmreg.h> 79116491Sharti#include <dev/hatm/if_hatmvar.h> 80116491Sharti 81122112Sharti 82116491Sharti/* 83122112Sharti * These macros are used to trace the flow of transmit mbufs and to 84122112Sharti * detect transmit mbuf leaks in the driver. 85122112Sharti */ 86122112Sharti#ifdef HATM_DEBUG 87122112Sharti#define hatm_free_txmbuf(SC) \ 88122112Sharti do { \ 89122112Sharti if (--sc->txmbuf < 0) \ 90122112Sharti DBG(sc, TX, ("txmbuf below 0!")); \ 91122112Sharti else if (sc->txmbuf == 0) \ 92122112Sharti DBG(sc, TX, ("txmbuf now 0")); \ 93122112Sharti } while (0) 94122112Sharti#define hatm_get_txmbuf(SC) \ 95122112Sharti do { \ 96122112Sharti if (++sc->txmbuf > 20000) \ 97146617Sharti DBG(sc, TX, ("txmbuf %u", sc->txmbuf)); \ 98122112Sharti else if (sc->txmbuf == 1) \ 99122112Sharti DBG(sc, TX, ("txmbuf leaves 0")); \ 100122112Sharti } while (0) 101122112Sharti#else 102122112Sharti#define hatm_free_txmbuf(SC) do { } while (0) 103122112Sharti#define hatm_get_txmbuf(SC) do { } while (0) 104122112Sharti#endif 105122112Sharti 106122112Sharti/* 107116491Sharti * Allocate a new TPD, zero the TPD part. Cannot return NULL if 108116491Sharti * flag is 0. The TPD is removed from the free list and its used 109116491Sharti * bit is set. 110116491Sharti */ 111116491Shartistatic struct tpd * 112116491Shartihatm_alloc_tpd(struct hatm_softc *sc, u_int flags) 113116491Sharti{ 114116491Sharti struct tpd *t; 115116491Sharti 116116491Sharti /* if we allocate a transmit TPD check for the reserve */ 117116491Sharti if (flags & M_NOWAIT) { 118116491Sharti if (sc->tpd_nfree <= HE_CONFIG_TPD_RESERVE) 119116491Sharti return (NULL); 120116491Sharti } else { 121116491Sharti if (sc->tpd_nfree == 0) 122116491Sharti return (NULL); 123116491Sharti } 124116491Sharti 125116491Sharti /* make it beeing used */ 126116491Sharti t = SLIST_FIRST(&sc->tpd_free); 127116491Sharti KASSERT(t != NULL, ("tpd botch")); 128116491Sharti SLIST_REMOVE_HEAD(&sc->tpd_free, link); 129116491Sharti TPD_SET_USED(sc, t->no); 130116491Sharti sc->tpd_nfree--; 131116491Sharti 132116491Sharti /* initialize */ 133116491Sharti t->mbuf = NULL; 134116491Sharti t->cid = 0; 135116491Sharti bzero(&t->tpd, sizeof(t->tpd)); 136116491Sharti t->tpd.addr = t->no << HE_REGS_TPD_ADDR; 137116491Sharti 138116491Sharti return (t); 139116491Sharti} 140116491Sharti 141116491Sharti/* 142116491Sharti * Free a TPD. If the mbuf pointer in that TPD is not zero, it is assumed, that 143116491Sharti * the DMA map of this TPD was used to load this mbuf. The map is unloaded 144116491Sharti * and the mbuf is freed. The TPD is put back onto the free list and 145116491Sharti * its used bit is cleared. 146116491Sharti */ 147116491Shartistatic void 148116491Shartihatm_free_tpd(struct hatm_softc *sc, struct tpd *tpd) 149116491Sharti{ 150116491Sharti if (tpd->mbuf != NULL) { 151116491Sharti bus_dmamap_unload(sc->tx_tag, tpd->map); 152122112Sharti hatm_free_txmbuf(sc); 153116491Sharti m_freem(tpd->mbuf); 154116491Sharti tpd->mbuf = NULL; 155116491Sharti } 156116491Sharti 157116491Sharti /* insert TPD into free list */ 158116491Sharti SLIST_INSERT_HEAD(&sc->tpd_free, tpd, link); 159116491Sharti TPD_CLR_USED(sc, tpd->no); 160116491Sharti sc->tpd_nfree++; 161116491Sharti} 162116491Sharti 163116491Sharti/* 164116491Sharti * Queue a number of TPD. If there is not enough space none of the TPDs 165116491Sharti * is queued and an error code is returned. 166116491Sharti */ 167116491Shartistatic int 168116491Shartihatm_queue_tpds(struct hatm_softc *sc, u_int count, struct tpd **list, 169116491Sharti u_int cid) 170116491Sharti{ 171116491Sharti u_int space; 172116491Sharti u_int i; 173116491Sharti 174116491Sharti if (count >= sc->tpdrq.size) { 175116491Sharti sc->istats.tdprq_full++; 176116491Sharti return (EBUSY); 177116491Sharti } 178116491Sharti 179116491Sharti if (sc->tpdrq.tail < sc->tpdrq.head) 180116491Sharti space = sc->tpdrq.head - sc->tpdrq.tail; 181116491Sharti else 182116491Sharti space = sc->tpdrq.head - sc->tpdrq.tail + sc->tpdrq.size; 183116491Sharti 184116491Sharti if (space <= count) { 185116491Sharti sc->tpdrq.head = 186116491Sharti (READ4(sc, HE_REGO_TPDRQ_H) >> HE_REGS_TPDRQ_H_H) & 187116491Sharti (sc->tpdrq.size - 1); 188116491Sharti 189116491Sharti if (sc->tpdrq.tail < sc->tpdrq.head) 190116491Sharti space = sc->tpdrq.head - sc->tpdrq.tail; 191116491Sharti else 192116491Sharti space = sc->tpdrq.head - sc->tpdrq.tail + 193116491Sharti sc->tpdrq.size; 194116491Sharti 195116491Sharti if (space <= count) { 196147256Sbrooks if_printf(sc->ifp, "TPDRQ full\n"); 197116491Sharti sc->istats.tdprq_full++; 198116491Sharti return (EBUSY); 199116491Sharti } 200116491Sharti } 201116491Sharti 202116491Sharti /* we are going to write to the TPD queue space */ 203116491Sharti bus_dmamap_sync(sc->tpdrq.mem.tag, sc->tpdrq.mem.map, 204116491Sharti BUS_DMASYNC_PREWRITE); 205116491Sharti 206116491Sharti /* put the entries into the TPD space */ 207116491Sharti for (i = 0; i < count; i++) { 208116491Sharti /* we are going to 'write' the TPD to the device */ 209116491Sharti bus_dmamap_sync(sc->tpds.tag, sc->tpds.map, 210116491Sharti BUS_DMASYNC_PREWRITE); 211116491Sharti 212116491Sharti sc->tpdrq.tpdrq[sc->tpdrq.tail].tpd = 213116491Sharti sc->tpds.paddr + HE_TPD_SIZE * list[i]->no; 214116491Sharti sc->tpdrq.tpdrq[sc->tpdrq.tail].cid = cid; 215116491Sharti 216116491Sharti if (++sc->tpdrq.tail == sc->tpdrq.size) 217116491Sharti sc->tpdrq.tail = 0; 218116491Sharti } 219116491Sharti 220116491Sharti /* update tail pointer */ 221116491Sharti WRITE4(sc, HE_REGO_TPDRQ_T, (sc->tpdrq.tail << HE_REGS_TPDRQ_T_T)); 222116491Sharti 223116491Sharti return (0); 224116491Sharti} 225116491Sharti 226116491Sharti/* 227116491Sharti * Helper struct for communication with the DMA load helper. 228116491Sharti */ 229116491Shartistruct load_txbuf_arg { 230116491Sharti struct hatm_softc *sc; 231116491Sharti struct tpd *first; 232116491Sharti struct mbuf *mbuf; 233116491Sharti struct hevcc *vcc; 234116491Sharti int error; 235116491Sharti u_int pti; 236116491Sharti u_int vpi, vci; 237116491Sharti}; 238116491Sharti 239116491Sharti/* 240116491Sharti * Loader callback for the mbuf. This function allocates the TPDs and 241116491Sharti * fills them. It puts the dmamap and and the mbuf pointer into the last 242116491Sharti * TPD and then tries to queue all the TPDs. If anything fails, all TPDs 243116491Sharti * allocated by this function are freed and the error flag is set in the 244116491Sharti * argument structure. The first TPD must then be freed by the caller. 245116491Sharti */ 246116491Shartistatic void 247116491Shartihatm_load_txbuf(void *uarg, bus_dma_segment_t *segs, int nseg, 248116491Sharti bus_size_t mapsize, int error) 249116491Sharti{ 250116491Sharti struct load_txbuf_arg *arg = uarg; 251116491Sharti u_int tpds_needed, i, n, tpd_cnt; 252116491Sharti int need_intr; 253116491Sharti struct tpd *tpd; 254116491Sharti struct tpd *tpd_list[HE_CONFIG_MAX_TPD_PER_PACKET]; 255116491Sharti 256116491Sharti if (error != 0) { 257116491Sharti DBG(arg->sc, DMA, ("%s -- error=%d plen=%d\n", 258116491Sharti __func__, error, arg->mbuf->m_pkthdr.len)); 259116491Sharti return; 260116491Sharti } 261116491Sharti 262116491Sharti /* ensure, we have enough TPDs (remember, we already have one) */ 263116491Sharti tpds_needed = (nseg + 2) / 3; 264116491Sharti if (HE_CONFIG_TPD_RESERVE + tpds_needed - 1 > arg->sc->tpd_nfree) { 265147256Sbrooks if_printf(arg->sc->ifp, "%s -- out of TPDs (need %d, " 266116491Sharti "have %u)\n", __func__, tpds_needed - 1, 267116491Sharti arg->sc->tpd_nfree + 1); 268116491Sharti arg->error = 1; 269116491Sharti return; 270116491Sharti } 271116491Sharti 272116491Sharti /* 273116491Sharti * Check for the maximum number of TPDs on the connection. 274116491Sharti */ 275116491Sharti need_intr = 0; 276116491Sharti if (arg->sc->max_tpd > 0) { 277116491Sharti if (arg->vcc->ntpds + tpds_needed > arg->sc->max_tpd) { 278116491Sharti arg->sc->istats.flow_closed++; 279116491Sharti arg->vcc->vflags |= HE_VCC_FLOW_CTRL; 280147256Sbrooks ATMEV_SEND_FLOW_CONTROL(IFP2IFATM(arg->sc->ifp), 281118170Sharti arg->vpi, arg->vci, 1); 282116491Sharti arg->error = 1; 283116491Sharti return; 284116491Sharti } 285116491Sharti if (arg->vcc->ntpds + tpds_needed > 286116491Sharti (9 * arg->sc->max_tpd) / 10) 287116491Sharti need_intr = 1; 288116491Sharti } 289116491Sharti 290116491Sharti tpd = arg->first; 291116491Sharti tpd_cnt = 0; 292116491Sharti tpd_list[tpd_cnt++] = tpd; 293116491Sharti for (i = n = 0; i < nseg; i++, n++) { 294116491Sharti if (n == 3) { 295116491Sharti if ((tpd = hatm_alloc_tpd(arg->sc, M_NOWAIT)) == NULL) 296116491Sharti /* may not fail (see check above) */ 297116491Sharti panic("%s: out of TPDs", __func__); 298116491Sharti tpd->cid = arg->first->cid; 299116491Sharti tpd->tpd.addr |= arg->pti; 300116491Sharti tpd_list[tpd_cnt++] = tpd; 301116491Sharti n = 0; 302116491Sharti } 303116491Sharti KASSERT(segs[i].ds_addr <= 0xffffffffLU, 304116491Sharti ("phys addr too large %lx", (u_long)segs[i].ds_addr)); 305116491Sharti 306116491Sharti DBG(arg->sc, DMA, ("DMA loaded: %lx/%lu", 307116491Sharti (u_long)segs[i].ds_addr, (u_long)segs[i].ds_len)); 308116491Sharti 309116491Sharti tpd->tpd.bufs[n].addr = segs[i].ds_addr; 310116491Sharti tpd->tpd.bufs[n].len = segs[i].ds_len; 311116491Sharti 312116491Sharti DBG(arg->sc, TX, ("seg[%u]=tpd[%u,%u]=%x/%u", i, 313116491Sharti tpd_cnt, n, tpd->tpd.bufs[n].addr, tpd->tpd.bufs[n].len)); 314116491Sharti 315116491Sharti if (i == nseg - 1) 316116491Sharti tpd->tpd.bufs[n].len |= HE_REGM_TPD_LST; 317116491Sharti } 318116491Sharti 319116491Sharti /* 320116491Sharti * Swap the MAP in the first and the last TPD and set the mbuf 321116491Sharti * pointer into the last TPD. We use the map in the last TPD, because 322116491Sharti * the map must stay valid until the last TPD is processed by the card. 323116491Sharti */ 324116491Sharti if (tpd_cnt > 1) { 325116491Sharti bus_dmamap_t tmp; 326116491Sharti 327116491Sharti tmp = arg->first->map; 328116491Sharti arg->first->map = tpd_list[tpd_cnt - 1]->map; 329116491Sharti tpd_list[tpd_cnt - 1]->map = tmp; 330116491Sharti } 331116491Sharti tpd_list[tpd_cnt - 1]->mbuf = arg->mbuf; 332116491Sharti 333116491Sharti if (need_intr) 334116491Sharti tpd_list[tpd_cnt - 1]->tpd.addr |= HE_REGM_TPD_INTR; 335116491Sharti 336116491Sharti /* queue the TPDs */ 337116491Sharti if (hatm_queue_tpds(arg->sc, tpd_cnt, tpd_list, arg->first->cid)) { 338116491Sharti /* free all, except the first TPD */ 339116491Sharti for (i = 1; i < tpd_cnt; i++) 340116491Sharti hatm_free_tpd(arg->sc, tpd_list[i]); 341116491Sharti arg->error = 1; 342116491Sharti return; 343116491Sharti } 344116491Sharti arg->vcc->ntpds += tpd_cnt; 345116491Sharti} 346116491Sharti 347116491Sharti 348116491Sharti/* 349116491Sharti * Start output on the interface 350116491Sharti */ 351116491Shartivoid 352116491Shartihatm_start(struct ifnet *ifp) 353116491Sharti{ 354147721Sharti struct hatm_softc *sc = ifp->if_softc; 355116491Sharti struct mbuf *m; 356116491Sharti struct atm_pseudohdr *aph; 357116491Sharti u_int cid; 358116491Sharti struct tpd *tpd; 359116491Sharti struct load_txbuf_arg arg; 360116491Sharti u_int len; 361116491Sharti int error; 362116491Sharti 363148887Srwatson if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 364116491Sharti return; 365116491Sharti mtx_lock(&sc->mtx); 366116491Sharti arg.sc = sc; 367116491Sharti 368116491Sharti while (1) { 369116491Sharti IF_DEQUEUE(&ifp->if_snd, m); 370116491Sharti if (m == NULL) 371116491Sharti break; 372116491Sharti 373122112Sharti hatm_get_txmbuf(sc); 374122112Sharti 375116491Sharti if (m->m_len < sizeof(*aph)) 376122112Sharti if ((m = m_pullup(m, sizeof(*aph))) == NULL) { 377122112Sharti hatm_free_txmbuf(sc); 378116491Sharti continue; 379122112Sharti } 380116491Sharti 381116491Sharti aph = mtod(m, struct atm_pseudohdr *); 382116491Sharti arg.vci = ATM_PH_VCI(aph); 383116491Sharti arg.vpi = ATM_PH_VPI(aph); 384116491Sharti m_adj(m, sizeof(*aph)); 385116491Sharti 386116491Sharti if ((len = m->m_pkthdr.len) == 0) { 387122112Sharti hatm_free_txmbuf(sc); 388116491Sharti m_freem(m); 389116491Sharti continue; 390116491Sharti } 391116491Sharti 392116491Sharti if ((arg.vpi & ~HE_VPI_MASK) || (arg.vci & ~HE_VCI_MASK) || 393116491Sharti (arg.vci == 0)) { 394122112Sharti hatm_free_txmbuf(sc); 395116491Sharti m_freem(m); 396116491Sharti continue; 397116491Sharti } 398116491Sharti cid = HE_CID(arg.vpi, arg.vci); 399116491Sharti arg.vcc = sc->vccs[cid]; 400116491Sharti 401116491Sharti if (arg.vcc == NULL || !(arg.vcc->vflags & HE_VCC_OPEN)) { 402122112Sharti hatm_free_txmbuf(sc); 403116491Sharti m_freem(m); 404116491Sharti continue; 405116491Sharti } 406116491Sharti if (arg.vcc->vflags & HE_VCC_FLOW_CTRL) { 407122112Sharti hatm_free_txmbuf(sc); 408116491Sharti m_freem(m); 409116491Sharti sc->istats.flow_drop++; 410116491Sharti continue; 411116491Sharti } 412116491Sharti 413116491Sharti arg.pti = 0; 414116491Sharti if (arg.vcc->param.aal == ATMIO_AAL_RAW) { 415116491Sharti if (len < 52) { 416121687Sharti /* too short */ 417122112Sharti hatm_free_txmbuf(sc); 418116491Sharti m_freem(m); 419116491Sharti continue; 420116491Sharti } 421121687Sharti 422121687Sharti /* 423121687Sharti * Get the header and ignore except 424121687Sharti * payload type and CLP. 425121687Sharti */ 426122112Sharti if (m->m_len < 4 && (m = m_pullup(m, 4)) == NULL) { 427122112Sharti hatm_free_txmbuf(sc); 428116491Sharti continue; 429122112Sharti } 430116491Sharti arg.pti = mtod(m, u_char *)[3] & 0xf; 431116491Sharti arg.pti = ((arg.pti & 0xe) << 2) | ((arg.pti & 1) << 1); 432116491Sharti m_adj(m, 4); 433116491Sharti len -= 4; 434121687Sharti 435121687Sharti if (len % 48 != 0) { 436121687Sharti m_adj(m, -((int)(len % 48))); 437121687Sharti len -= len % 48; 438121687Sharti } 439116491Sharti } 440116491Sharti 441116491Sharti#ifdef ENABLE_BPF 442116491Sharti if (!(arg.vcc->param.flags & ATMIO_FLAG_NG) && 443118540Sharti (arg.vcc->param.aal == ATMIO_AAL_5) && 444116491Sharti (arg.vcc->param.flags & ATM_PH_LLCSNAP)) 445116491Sharti BPF_MTAP(ifp, m); 446116491Sharti#endif 447116491Sharti 448116491Sharti /* Now load a DMA map with the packet. Allocate the first 449116491Sharti * TPD to get a map. Additional TPDs may be allocated by the 450116491Sharti * callback. */ 451116491Sharti if ((tpd = hatm_alloc_tpd(sc, M_NOWAIT)) == NULL) { 452122112Sharti hatm_free_txmbuf(sc); 453116491Sharti m_freem(m); 454147256Sbrooks sc->ifp->if_oerrors++; 455116491Sharti continue; 456116491Sharti } 457116491Sharti tpd->cid = cid; 458116491Sharti tpd->tpd.addr |= arg.pti; 459116491Sharti arg.first = tpd; 460116491Sharti arg.error = 0; 461116491Sharti arg.mbuf = m; 462116491Sharti 463116491Sharti error = bus_dmamap_load_mbuf(sc->tx_tag, tpd->map, m, 464117382Sharti hatm_load_txbuf, &arg, BUS_DMA_NOWAIT); 465116491Sharti 466116491Sharti if (error == EFBIG) { 467116491Sharti /* try to defragment the packet */ 468116491Sharti sc->istats.defrag++; 469243857Sglebius m = m_defrag(m, M_NOWAIT); 470116491Sharti if (m == NULL) { 471122112Sharti tpd->mbuf = NULL; 472122112Sharti hatm_free_txmbuf(sc); 473122112Sharti hatm_free_tpd(sc, tpd); 474147256Sbrooks sc->ifp->if_oerrors++; 475116491Sharti continue; 476116491Sharti } 477116491Sharti arg.mbuf = m; 478116491Sharti error = bus_dmamap_load_mbuf(sc->tx_tag, tpd->map, m, 479117382Sharti hatm_load_txbuf, &arg, BUS_DMA_NOWAIT); 480116491Sharti } 481116491Sharti 482116491Sharti if (error != 0) { 483147256Sbrooks if_printf(sc->ifp, "mbuf loaded error=%d\n", 484116491Sharti error); 485116491Sharti hatm_free_tpd(sc, tpd); 486147256Sbrooks sc->ifp->if_oerrors++; 487116491Sharti continue; 488116491Sharti } 489116491Sharti if (arg.error) { 490116491Sharti hatm_free_tpd(sc, tpd); 491147256Sbrooks sc->ifp->if_oerrors++; 492116491Sharti continue; 493116491Sharti } 494116491Sharti arg.vcc->opackets++; 495116491Sharti arg.vcc->obytes += len; 496147256Sbrooks sc->ifp->if_opackets++; 497116491Sharti } 498116491Sharti mtx_unlock(&sc->mtx); 499116491Sharti} 500116491Sharti 501116491Shartivoid 502116491Shartihatm_tx_complete(struct hatm_softc *sc, struct tpd *tpd, uint32_t flags) 503116491Sharti{ 504116491Sharti struct hevcc *vcc = sc->vccs[tpd->cid]; 505116491Sharti 506116491Sharti DBG(sc, TX, ("tx_complete cid=%#x flags=%#x", tpd->cid, flags)); 507116491Sharti 508116491Sharti if (vcc == NULL) 509116491Sharti return; 510116491Sharti if ((flags & HE_REGM_TBRQ_EOS) && (vcc->vflags & HE_VCC_TX_CLOSING)) { 511116491Sharti vcc->vflags &= ~HE_VCC_TX_CLOSING; 512118540Sharti if (vcc->param.flags & ATMIO_FLAG_ASYNC) { 513116491Sharti hatm_tx_vcc_closed(sc, tpd->cid); 514116491Sharti if (!(vcc->vflags & HE_VCC_OPEN)) { 515116491Sharti hatm_vcc_closed(sc, tpd->cid); 516116491Sharti vcc = NULL; 517116491Sharti } 518116491Sharti } else 519116491Sharti cv_signal(&sc->vcc_cv); 520116491Sharti } 521116491Sharti hatm_free_tpd(sc, tpd); 522116491Sharti 523116491Sharti if (vcc == NULL) 524116491Sharti return; 525116491Sharti 526116491Sharti vcc->ntpds--; 527116491Sharti 528116491Sharti if ((vcc->vflags & HE_VCC_FLOW_CTRL) && 529116491Sharti vcc->ntpds <= HE_CONFIG_TPD_FLOW_ENB) { 530116491Sharti vcc->vflags &= ~HE_VCC_FLOW_CTRL; 531147256Sbrooks ATMEV_SEND_FLOW_CONTROL(IFP2IFATM(sc->ifp), 532118170Sharti HE_VPI(tpd->cid), HE_VCI(tpd->cid), 0); 533116491Sharti } 534116491Sharti} 535116491Sharti 536116491Sharti/* 537116491Sharti * Convert CPS to Rate for a rate group 538116491Sharti */ 539116491Shartistatic u_int 540116491Sharticps_to_rate(struct hatm_softc *sc, uint32_t cps) 541116491Sharti{ 542116491Sharti u_int clk = sc->he622 ? HE_622_CLOCK : HE_155_CLOCK; 543116491Sharti u_int period, rate; 544116491Sharti 545116491Sharti /* how many double ticks between two cells */ 546116491Sharti period = (clk + 2 * cps - 1) / (2 * cps); 547116491Sharti rate = hatm_cps2atmf(period); 548116491Sharti if (hatm_atmf2cps(rate) < period) 549116491Sharti rate++; 550116491Sharti 551116491Sharti return (rate); 552116491Sharti} 553116491Sharti 554116491Sharti/* 555116491Sharti * Check whether the VCC is really closed on the hardware and available for 556116491Sharti * open. Check that we have enough resources. If this function returns ok, 557116491Sharti * a later actual open must succeed. Assume, that we are locked between this 558116491Sharti * function and the next one, so that nothing does change. For CBR this 559116491Sharti * assigns the rate group and set the rate group's parameter. 560116491Sharti */ 561116491Shartiint 562116491Shartihatm_tx_vcc_can_open(struct hatm_softc *sc, u_int cid, struct hevcc *vcc) 563116491Sharti{ 564116491Sharti uint32_t v, line_rate; 565116491Sharti u_int rc, idx, free_idx; 566116491Sharti struct atmio_tparam *t = &vcc->param.tparam; 567116491Sharti 568116491Sharti /* verify that connection is closed */ 569116491Sharti#if 0 570116491Sharti v = READ_TSR(sc, cid, 4); 571116491Sharti if(!(v & HE_REGM_TSR4_SESS_END)) { 572147256Sbrooks if_printf(sc->ifp, "cid=%#x not closed (TSR4)\n", cid); 573116491Sharti return (EBUSY); 574116491Sharti } 575116491Sharti#endif 576116491Sharti v = READ_TSR(sc, cid, 0); 577116491Sharti if((v & HE_REGM_TSR0_CONN_STATE) != 0) { 578147256Sbrooks if_printf(sc->ifp, "cid=%#x not closed (TSR0=%#x)\n", 579116491Sharti cid, v); 580116491Sharti return (EBUSY); 581116491Sharti } 582116491Sharti 583116491Sharti /* check traffic parameters */ 584116491Sharti line_rate = sc->he622 ? ATM_RATE_622M : ATM_RATE_155M; 585116491Sharti switch (vcc->param.traffic) { 586116491Sharti 587116491Sharti case ATMIO_TRAFFIC_UBR: 588116491Sharti if (t->pcr == 0 || t->pcr > line_rate) 589116491Sharti t->pcr = line_rate; 590116491Sharti if (t->mcr != 0 || t->icr != 0 || t->tbe != 0 || t->nrm != 0 || 591116491Sharti t->trm != 0 || t->adtf != 0 || t->rif != 0 || t->rdf != 0 || 592116491Sharti t->cdf != 0) 593116491Sharti return (EINVAL); 594116491Sharti break; 595116491Sharti 596116491Sharti case ATMIO_TRAFFIC_CBR: 597116491Sharti /* 598116491Sharti * Compute rate group index 599116491Sharti */ 600116491Sharti if (t->pcr < 10) 601116491Sharti t->pcr = 10; 602116491Sharti if (sc->cbr_bw + t->pcr > line_rate) 603116491Sharti return (EINVAL); 604116491Sharti if (t->mcr != 0 || t->icr != 0 || t->tbe != 0 || t->nrm != 0 || 605116491Sharti t->trm != 0 || t->adtf != 0 || t->rif != 0 || t->rdf != 0 || 606116491Sharti t->cdf != 0) 607116491Sharti return (EINVAL); 608116491Sharti 609116491Sharti rc = cps_to_rate(sc, t->pcr); 610116491Sharti free_idx = HE_REGN_CS_STPER; 611116491Sharti for (idx = 0; idx < HE_REGN_CS_STPER; idx++) { 612116491Sharti if (sc->rate_ctrl[idx].refcnt == 0) { 613116491Sharti if (free_idx == HE_REGN_CS_STPER) 614116491Sharti free_idx = idx; 615116491Sharti } else { 616116491Sharti if (sc->rate_ctrl[idx].rate == rc) 617116491Sharti break; 618116491Sharti } 619116491Sharti } 620116491Sharti if (idx == HE_REGN_CS_STPER) { 621116491Sharti if ((idx = free_idx) == HE_REGN_CS_STPER) 622116491Sharti return (EBUSY); 623116491Sharti sc->rate_ctrl[idx].rate = rc; 624116491Sharti } 625116491Sharti vcc->rc = idx; 626118598Sharti 627118598Sharti /* commit */ 628118598Sharti sc->rate_ctrl[idx].refcnt++; 629118598Sharti sc->cbr_bw += t->pcr; 630116491Sharti break; 631116491Sharti 632116491Sharti case ATMIO_TRAFFIC_ABR: 633116491Sharti if (t->pcr > line_rate) 634116491Sharti t->pcr = line_rate; 635116491Sharti if (t->mcr > line_rate) 636116491Sharti t->mcr = line_rate; 637116491Sharti if (t->icr > line_rate) 638116491Sharti t->icr = line_rate; 639116491Sharti if (t->tbe == 0 || t->tbe >= 1 << 24 || t->nrm > 7 || 640116491Sharti t->trm > 7 || t->adtf >= 1 << 10 || t->rif > 15 || 641116491Sharti t->rdf > 15 || t->cdf > 7) 642116491Sharti return (EINVAL); 643116491Sharti break; 644116491Sharti 645116491Sharti default: 646116491Sharti return (EINVAL); 647116491Sharti } 648116491Sharti return (0); 649116491Sharti} 650116491Sharti 651116491Sharti#define NRM_CODE2VAL(CODE) (2 * (1 << (CODE))) 652116491Sharti 653116491Sharti/* 654116491Sharti * Actually open the transmit VCC 655116491Sharti */ 656116491Shartivoid 657116491Shartihatm_tx_vcc_open(struct hatm_softc *sc, u_int cid) 658116491Sharti{ 659116491Sharti struct hevcc *vcc = sc->vccs[cid]; 660116491Sharti uint32_t tsr0, tsr4, atmf, crm; 661116491Sharti const struct atmio_tparam *t = &vcc->param.tparam; 662116491Sharti 663116491Sharti if (vcc->param.aal == ATMIO_AAL_5) { 664116491Sharti tsr0 = HE_REGM_TSR0_AAL_5 << HE_REGS_TSR0_AAL; 665116491Sharti tsr4 = HE_REGM_TSR4_AAL_5 << HE_REGS_TSR4_AAL; 666116491Sharti } else { 667116491Sharti tsr0 = HE_REGM_TSR0_AAL_0 << HE_REGS_TSR0_AAL; 668116491Sharti tsr4 = HE_REGM_TSR4_AAL_0 << HE_REGS_TSR4_AAL; 669116491Sharti } 670116491Sharti tsr4 |= 1; 671116491Sharti 672116491Sharti switch (vcc->param.traffic) { 673116491Sharti 674116491Sharti case ATMIO_TRAFFIC_UBR: 675116491Sharti atmf = hatm_cps2atmf(t->pcr); 676116491Sharti 677116491Sharti tsr0 |= HE_REGM_TSR0_TRAFFIC_UBR << HE_REGS_TSR0_TRAFFIC; 678116491Sharti tsr0 |= HE_REGM_TSR0_USE_WMIN | HE_REGM_TSR0_UPDATE_GER; 679116491Sharti 680116491Sharti WRITE_TSR(sc, cid, 0, 0xf, tsr0); 681116491Sharti WRITE_TSR(sc, cid, 4, 0xf, tsr4); 682116491Sharti WRITE_TSR(sc, cid, 1, 0xf, (atmf << HE_REGS_TSR1_PCR)); 683116491Sharti WRITE_TSR(sc, cid, 2, 0xf, (atmf << HE_REGS_TSR2_ACR)); 684116491Sharti WRITE_TSR(sc, cid, 9, 0xf, HE_REGM_TSR9_INIT); 685116491Sharti WRITE_TSR(sc, cid, 3, 0xf, 0); 686116491Sharti WRITE_TSR(sc, cid, 5, 0xf, 0); 687116491Sharti WRITE_TSR(sc, cid, 6, 0xf, 0); 688116491Sharti WRITE_TSR(sc, cid, 7, 0xf, 0); 689116491Sharti WRITE_TSR(sc, cid, 8, 0xf, 0); 690116491Sharti WRITE_TSR(sc, cid, 10, 0xf, 0); 691116491Sharti WRITE_TSR(sc, cid, 11, 0xf, 0); 692116491Sharti WRITE_TSR(sc, cid, 12, 0xf, 0); 693116491Sharti WRITE_TSR(sc, cid, 13, 0xf, 0); 694116491Sharti WRITE_TSR(sc, cid, 14, 0xf, 0); 695116491Sharti break; 696116491Sharti 697116491Sharti case ATMIO_TRAFFIC_CBR: 698116491Sharti atmf = hatm_cps2atmf(t->pcr); 699116491Sharti 700118598Sharti if (sc->rate_ctrl[vcc->rc].refcnt == 1) 701118598Sharti WRITE_MBOX4(sc, HE_REGO_CS_STPER(vcc->rc), 702118598Sharti sc->rate_ctrl[vcc->rc].rate); 703118598Sharti 704116491Sharti tsr0 |= HE_REGM_TSR0_TRAFFIC_CBR << HE_REGS_TSR0_TRAFFIC; 705116491Sharti tsr0 |= vcc->rc; 706116491Sharti 707116491Sharti WRITE_TSR(sc, cid, 1, 0xf, (atmf << HE_REGS_TSR1_PCR)); 708116491Sharti WRITE_TSR(sc, cid, 2, 0xf, (atmf << HE_REGS_TSR2_ACR)); 709116491Sharti WRITE_TSR(sc, cid, 3, 0xf, 0); 710116491Sharti WRITE_TSR(sc, cid, 5, 0xf, 0); 711116491Sharti WRITE_TSR(sc, cid, 6, 0xf, 0); 712116491Sharti WRITE_TSR(sc, cid, 7, 0xf, 0); 713116491Sharti WRITE_TSR(sc, cid, 8, 0xf, 0); 714116491Sharti WRITE_TSR(sc, cid, 10, 0xf, 0); 715116491Sharti WRITE_TSR(sc, cid, 11, 0xf, 0); 716116491Sharti WRITE_TSR(sc, cid, 12, 0xf, 0); 717116491Sharti WRITE_TSR(sc, cid, 13, 0xf, 0); 718116491Sharti WRITE_TSR(sc, cid, 14, 0xf, 0); 719116491Sharti WRITE_TSR(sc, cid, 4, 0xf, tsr4); 720116491Sharti WRITE_TSR(sc, cid, 9, 0xf, HE_REGM_TSR9_INIT); 721116491Sharti WRITE_TSR(sc, cid, 0, 0xf, tsr0); 722116491Sharti 723116491Sharti break; 724116491Sharti 725116491Sharti case ATMIO_TRAFFIC_ABR: 726116491Sharti if ((crm = t->tbe / NRM_CODE2VAL(t->nrm)) > 0xffff) 727116491Sharti crm = 0xffff; 728116491Sharti 729116491Sharti tsr0 |= HE_REGM_TSR0_TRAFFIC_ABR << HE_REGS_TSR0_TRAFFIC; 730116491Sharti tsr0 |= HE_REGM_TSR0_USE_WMIN | HE_REGM_TSR0_UPDATE_GER; 731116491Sharti 732116491Sharti WRITE_TSR(sc, cid, 0, 0xf, tsr0); 733116491Sharti WRITE_TSR(sc, cid, 4, 0xf, tsr4); 734116491Sharti 735116491Sharti WRITE_TSR(sc, cid, 1, 0xf, 736116491Sharti ((hatm_cps2atmf(t->pcr) << HE_REGS_TSR1_PCR) | 737116491Sharti (hatm_cps2atmf(t->mcr) << HE_REGS_TSR1_MCR))); 738116491Sharti WRITE_TSR(sc, cid, 2, 0xf, 739116491Sharti (hatm_cps2atmf(t->icr) << HE_REGS_TSR2_ACR)); 740116491Sharti WRITE_TSR(sc, cid, 3, 0xf, 741116491Sharti ((NRM_CODE2VAL(t->nrm) - 1) << HE_REGS_TSR3_NRM) | 742116491Sharti (crm << HE_REGS_TSR3_CRM)); 743116491Sharti 744116491Sharti WRITE_TSR(sc, cid, 5, 0xf, 0); 745116491Sharti WRITE_TSR(sc, cid, 6, 0xf, 0); 746116491Sharti WRITE_TSR(sc, cid, 7, 0xf, 0); 747116491Sharti WRITE_TSR(sc, cid, 8, 0xf, 0); 748116491Sharti WRITE_TSR(sc, cid, 10, 0xf, 0); 749116491Sharti WRITE_TSR(sc, cid, 12, 0xf, 0); 750116491Sharti WRITE_TSR(sc, cid, 14, 0xf, 0); 751116491Sharti WRITE_TSR(sc, cid, 9, 0xf, HE_REGM_TSR9_INIT); 752116491Sharti 753116491Sharti WRITE_TSR(sc, cid, 11, 0xf, 754116491Sharti (hatm_cps2atmf(t->icr) << HE_REGS_TSR11_ICR) | 755116491Sharti (t->trm << HE_REGS_TSR11_TRM) | 756116491Sharti (t->nrm << HE_REGS_TSR11_NRM) | 757116491Sharti (t->adtf << HE_REGS_TSR11_ADTF)); 758116491Sharti 759116491Sharti WRITE_TSR(sc, cid, 13, 0xf, 760116491Sharti (t->rdf << HE_REGS_TSR13_RDF) | 761116491Sharti (t->rif << HE_REGS_TSR13_RIF) | 762116491Sharti (t->cdf << HE_REGS_TSR13_CDF) | 763116491Sharti (crm << HE_REGS_TSR13_CRM)); 764116491Sharti 765116491Sharti break; 766116491Sharti 767116491Sharti default: 768116491Sharti return; 769116491Sharti } 770116491Sharti 771116491Sharti vcc->vflags |= HE_VCC_TX_OPEN; 772116491Sharti} 773116491Sharti 774116491Sharti/* 775116491Sharti * Close the TX side of a VCC. Set the CLOSING flag. 776116491Sharti */ 777116491Shartivoid 778116491Shartihatm_tx_vcc_close(struct hatm_softc *sc, u_int cid) 779116491Sharti{ 780116491Sharti struct hevcc *vcc = sc->vccs[cid]; 781116491Sharti struct tpd *tpd_list[1]; 782116491Sharti u_int i, pcr = 0; 783116491Sharti 784116491Sharti WRITE_TSR(sc, cid, 4, 0x8, HE_REGM_TSR4_FLUSH); 785116491Sharti 786116491Sharti switch (vcc->param.traffic) { 787116491Sharti 788116491Sharti case ATMIO_TRAFFIC_CBR: 789116491Sharti WRITE_TSR(sc, cid, 14, 0x8, HE_REGM_TSR14_CBR_DELETE); 790116491Sharti break; 791116491Sharti 792116491Sharti case ATMIO_TRAFFIC_ABR: 793116491Sharti WRITE_TSR(sc, cid, 14, 0x4, HE_REGM_TSR14_ABR_CLOSE); 794116491Sharti pcr = vcc->param.tparam.pcr; 795116491Sharti /* FALL THROUGH */ 796116491Sharti 797116491Sharti case ATMIO_TRAFFIC_UBR: 798116491Sharti WRITE_TSR(sc, cid, 1, 0xf, 799116491Sharti hatm_cps2atmf(HE_CONFIG_FLUSH_RATE) << HE_REGS_TSR1_MCR | 800116491Sharti hatm_cps2atmf(pcr) << HE_REGS_TSR1_PCR); 801116491Sharti break; 802116491Sharti } 803116491Sharti 804116491Sharti tpd_list[0] = hatm_alloc_tpd(sc, 0); 805116491Sharti tpd_list[0]->tpd.addr |= HE_REGM_TPD_EOS | HE_REGM_TPD_INTR; 806116491Sharti tpd_list[0]->cid = cid; 807116491Sharti 808116491Sharti vcc->vflags |= HE_VCC_TX_CLOSING; 809116491Sharti vcc->vflags &= ~HE_VCC_TX_OPEN; 810116491Sharti 811116491Sharti i = 0; 812116491Sharti while (hatm_queue_tpds(sc, 1, tpd_list, cid) != 0) { 813116491Sharti if (++i == 1000) 814116491Sharti panic("TPDRQ permanently full"); 815116491Sharti DELAY(1000); 816116491Sharti } 817116491Sharti} 818116491Sharti 819116491Shartivoid 820116491Shartihatm_tx_vcc_closed(struct hatm_softc *sc, u_int cid) 821116491Sharti{ 822116491Sharti if (sc->vccs[cid]->param.traffic == ATMIO_TRAFFIC_CBR) { 823116491Sharti sc->cbr_bw -= sc->vccs[cid]->param.tparam.pcr; 824116491Sharti sc->rate_ctrl[sc->vccs[cid]->rc].refcnt--; 825116491Sharti } 826116491Sharti} 827