1 /*- 2 * Copyright (c) 2008 Weongyo Jeong <weongyo@freebsd.org> 3 * Copyright (c) 2007 Marvell Semiconductor, Inc. 4 * Copyright (c) 2007 Sam Leffler, Errno Consulting 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification. 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 15 * redistribution must be conditioned upon including a substantially 16 * similar Disclaimer requirement for further binary redistribution. 17 * 18 * NO WARRANTY 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 29 * THE POSSIBILITY OF SUCH DAMAGES. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifdef __FreeBSD__ 34 __FBSDID("$FreeBSD$"); 35 #endif 36 37 #include <sys/param.h> 38 #include <sys/endian.h> 39 #include <sys/kernel.h> 40 #include <sys/socket.h> 41 #include <sys/sockio.h> 42 #include <sys/sysctl.h> 43 #include <sys/taskqueue.h> 44 45 #include <machine/bus.h> 46 #include <sys/bus.h> 47 48 #include <net/if.h> 49 #include <net/if_dl.h> 50 #include <net/if_media.h> 51 #include <net/if_types.h> 52 #include <net/ethernet.h> 53 54 #include <net80211/ieee80211_var.h> 55 #include <net80211/ieee80211_regdomain.h> 56 57 #include <net/bpf.h> 58 59 #include <dev/malo/if_malo.h> 60 61 SYSCTL_NODE(_hw, OID_AUTO, malo, CTLFLAG_RD, 0, 62 "Marvell 88w8335 driver parameters"); 63 64 static int malo_txcoalesce = 8; /* # tx pkts to q before poking f/w*/ 65 SYSCTL_INT(_hw_malo, OID_AUTO, txcoalesce, CTLFLAG_RW, &malo_txcoalesce, 66 0, "tx buffers to send at once"); 67 TUNABLE_INT("hw.malo.txcoalesce", &malo_txcoalesce); 68 static int malo_rxbuf = MALO_RXBUF; /* # rx buffers to allocate */ 69 SYSCTL_INT(_hw_malo, OID_AUTO, rxbuf, CTLFLAG_RW, &malo_rxbuf, 70 0, "rx buffers allocated"); 71 TUNABLE_INT("hw.malo.rxbuf", &malo_rxbuf); 72 static int malo_rxquota = MALO_RXBUF; /* # max buffers to process */ 73 SYSCTL_INT(_hw_malo, OID_AUTO, rxquota, CTLFLAG_RW, &malo_rxquota, 74 0, "max rx buffers to process per interrupt"); 75 TUNABLE_INT("hw.malo.rxquota", &malo_rxquota); 76 static int malo_txbuf = MALO_TXBUF; /* # tx buffers to allocate */ 77 SYSCTL_INT(_hw_malo, OID_AUTO, txbuf, CTLFLAG_RW, &malo_txbuf, 78 0, "tx buffers allocated"); 79 TUNABLE_INT("hw.malo.txbuf", &malo_txbuf); 80 81 #ifdef MALO_DEBUG 82 static int malo_debug = 0; 83 SYSCTL_INT(_hw_malo, OID_AUTO, debug, CTLFLAG_RW, &malo_debug, 84 0, "control debugging printfs"); 85 TUNABLE_INT("hw.malo.debug", &malo_debug); 86 enum { 87 MALO_DEBUG_XMIT = 0x00000001, /* basic xmit operation */ 88 MALO_DEBUG_XMIT_DESC = 0x00000002, /* xmit descriptors */ 89 MALO_DEBUG_RECV = 0x00000004, /* basic recv operation */ 90 MALO_DEBUG_RECV_DESC = 0x00000008, /* recv descriptors */ 91 MALO_DEBUG_RESET = 0x00000010, /* reset processing */ 92 MALO_DEBUG_INTR = 0x00000040, /* ISR */ 93 MALO_DEBUG_TX_PROC = 0x00000080, /* tx ISR proc */ 94 MALO_DEBUG_RX_PROC = 0x00000100, /* rx ISR proc */ 95 MALO_DEBUG_STATE = 0x00000400, /* 802.11 state transitions */ 96 MALO_DEBUG_NODE = 0x00000800, /* node management */ 97 MALO_DEBUG_RECV_ALL = 0x00001000, /* trace all frames (beacons) */ 98 MALO_DEBUG_FW = 0x00008000, /* firmware */ 99 MALO_DEBUG_ANY = 0xffffffff 100 }; 101 #define IS_BEACON(wh) \ 102 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK | \ 103 IEEE80211_FC0_SUBTYPE_MASK)) == \ 104 (IEEE80211_FC0_TYPE_MGT|IEEE80211_FC0_SUBTYPE_BEACON)) 105 #define IFF_DUMPPKTS_RECV(sc, wh) \ 106 (((sc->malo_debug & MALO_DEBUG_RECV) && \ 107 ((sc->malo_debug & MALO_DEBUG_RECV_ALL) || !IS_BEACON(wh))) || \ 108 (sc->malo_ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == \ 109 (IFF_DEBUG|IFF_LINK2)) 110 #define IFF_DUMPPKTS_XMIT(sc) \ 111 ((sc->malo_debug & MALO_DEBUG_XMIT) || \ 112 (sc->malo_ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == \ 113 (IFF_DEBUG | IFF_LINK2)) 114 #define DPRINTF(sc, m, fmt, ...) do { \ 115 if (sc->malo_debug & (m)) \ 116 printf(fmt, __VA_ARGS__); \ 117 } while (0) 118 #else 119 #define DPRINTF(sc, m, fmt, ...) do { \ 120 (void) sc; \ 121 } while (0) 122 #endif 123 124 MALLOC_DEFINE(M_MALODEV, "malodev", "malo driver dma buffers"); 125 126 static int malo_dma_setup(struct malo_softc *); 127 static int malo_setup_hwdma(struct malo_softc *); 128 static void malo_txq_init(struct malo_softc *, struct malo_txq *, int); 129 static void malo_tx_cleanupq(struct malo_softc *, struct malo_txq *); 130 static void malo_start(struct ifnet *); 131 static void malo_watchdog(struct ifnet *); 132 static int malo_ioctl(struct ifnet *, u_long, caddr_t); 133 static void malo_updateslot(struct ifnet *); 134 static int malo_newstate(struct ieee80211com *, enum ieee80211_state, int); 135 static void malo_scan_start(struct ieee80211com *); 136 static void malo_scan_end(struct ieee80211com *); 137 static void malo_set_channel(struct ieee80211com *); 138 static int malo_raw_xmit(struct ieee80211_node *, struct mbuf *, 139 const struct ieee80211_bpf_params *); 140 static int malo_media_change(struct ifnet *); 141 static void malo_bpfattach(struct malo_softc *); 142 static void malo_sysctlattach(struct malo_softc *); 143 static void malo_announce(struct malo_softc *); 144 static void malo_dma_cleanup(struct malo_softc *); 145 static void malo_stop_locked(struct ifnet *, int); 146 static int malo_chan_set(struct malo_softc *, struct ieee80211_channel *); 147 static int malo_mode_init(struct malo_softc *); 148 static void malo_tx_proc(void *, int); 149 static void malo_rx_proc(void *, int); 150 static void malo_init(void *); 151 152 /* 153 * Read/Write shorthands for accesses to BAR 0. Note that all BAR 1 154 * operations are done in the "hal" except getting H/W MAC address at 155 * malo_attach and there should be no reference to them here. 156 */ 157 static uint32_t 158 malo_bar0_read4(struct malo_softc *sc, bus_size_t off) 159 { 160 return bus_space_read_4(sc->malo_io0t, sc->malo_io0h, off); 161 } 162 163 static void 164 malo_bar0_write4(struct malo_softc *sc, bus_size_t off, uint32_t val) 165 { 166 DPRINTF(sc, MALO_DEBUG_FW, "%s: off 0x%x val 0x%x\n", 167 __func__, off, val); 168 169 bus_space_write_4(sc->malo_io0t, sc->malo_io0h, off, val); 170 } 171 172 static uint8_t 173 malo_bar1_read1(struct malo_softc *sc, bus_size_t off) 174 { 175 return bus_space_read_1(sc->malo_io1t, sc->malo_io1h, off); 176 } 177 178 int 179 malo_attach(uint16_t devid, struct malo_softc *sc) 180 { 181 int error, i; 182 struct ieee80211com *ic = &sc->malo_ic; 183 struct ifnet *ifp; 184 struct malo_hal *mh; 185 uint8_t bands; 186 187 ifp = sc->malo_ifp = if_alloc(IFT_ETHER); 188 if (ifp == NULL) { 189 device_printf(sc->malo_dev, "can not if_alloc()\n"); 190 return ENOSPC; 191 } 192 193 MALO_LOCK_INIT(sc); 194 195 /* set these up early for if_printf use */ 196 if_initname(ifp, device_get_name(sc->malo_dev), 197 device_get_unit(sc->malo_dev)); 198 199 /* 200 * NB: get mac address from hardware directly here before we set DMAs 201 * for HAL because we don't want to disturb operations of HAL at BAR 1. 202 */ 203 for (i = 0; i < IEEE80211_ADDR_LEN; i++) { 204 /* XXX remove a magic number but we don't have documents. */ 205 ic->ic_myaddr[i] = malo_bar1_read1(sc, 0xa528 + i); 206 DELAY(1000); 207 } 208 209 mh = malo_hal_attach(sc->malo_dev, devid, 210 sc->malo_io1h, sc->malo_io1t, sc->malo_dmat); 211 if (mh == NULL) { 212 if_printf(ifp, "unable to attach HAL\n"); 213 error = EIO; 214 goto bad; 215 } 216 sc->malo_mh = mh; 217 218 sc->malo_txantenna = 0x2; /* h/w default */ 219 sc->malo_rxantenna = 0xffff; /* h/w default */ 220 221 /* 222 * Allocate tx + rx descriptors and populate the lists. 223 * We immediately push the information to the firmware 224 * as otherwise it gets upset. 225 */ 226 error = malo_dma_setup(sc); 227 if (error != 0) { 228 if_printf(ifp, "failed to setup descriptors: %d\n", error); 229 goto bad1; 230 } 231 232 sc->malo_tq = taskqueue_create_fast("malo_taskq", M_NOWAIT, 233 taskqueue_thread_enqueue, &sc->malo_tq); 234 taskqueue_start_threads(&sc->malo_tq, 1, PI_NET, 235 "%s taskq", ifp->if_xname); 236 237 TASK_INIT(&sc->malo_rxtask, 0, malo_rx_proc, sc); 238 TASK_INIT(&sc->malo_txtask, 0, malo_tx_proc, sc); 239 240 ifp->if_softc = sc; 241 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 242 ifp->if_start = malo_start; 243 ifp->if_watchdog = malo_watchdog; 244 ifp->if_ioctl = malo_ioctl; 245 ifp->if_init = malo_init; 246 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 247 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 248 IFQ_SET_READY(&ifp->if_snd); 249 250 /* NB: firmware looks that it does not export regdomain info API. */ 251 bands = 0; 252 setbit(&bands, IEEE80211_MODE_11B); 253 setbit(&bands, IEEE80211_MODE_11G); 254 ieee80211_init_channels(ic, 0, CTRY_DEFAULT, bands, 0, 1); 255 256 ic->ic_ifp = ifp; 257 /* XXX not right but it's not used anywhere important */ 258 ic->ic_phytype = IEEE80211_T_OFDM; 259 ic->ic_opmode = IEEE80211_M_STA; 260 ic->ic_caps = 261 IEEE80211_C_BGSCAN /* capable of bg scanning */ 262 | IEEE80211_C_MONITOR /* monitor mode */ 263 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 264 | IEEE80211_C_SHSLOT /* short slot time supported */ 265 | IEEE80211_C_TXPMGT /* capable of txpow mgt */ 266 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 267 ; 268 269 /* 270 * Transmit requires space in the packet for a special format transmit 271 * record and optional padding between this record and the payload. 272 * Ask the net80211 layer to arrange this when encapsulating 273 * packets so we can add it efficiently. 274 */ 275 ic->ic_headroom = sizeof(struct malo_txrec) - 276 sizeof(struct ieee80211_frame); 277 278 /* call MI attach routine. */ 279 ieee80211_ifattach(ic); 280 /* override default methods */ 281 ic->ic_updateslot = malo_updateslot; 282 ic->ic_raw_xmit = malo_raw_xmit; 283 284 sc->malo_newstate = ic->ic_newstate; 285 ic->ic_newstate = malo_newstate; 286 287 ic->ic_scan_start = malo_scan_start; 288 ic->ic_scan_end = malo_scan_end; 289 ic->ic_set_channel = malo_set_channel; 290 291 /* complete initialization */ 292 ieee80211_media_init(ic, malo_media_change, ieee80211_media_status); 293 294 sc->malo_invalid = 0; /* ready to go, enable int handling */ 295 296 malo_bpfattach(sc); 297 298 /* 299 * Setup dynamic sysctl's. 300 */ 301 malo_sysctlattach(sc); 302 303 if (bootverbose) 304 ieee80211_announce(ic); 305 306 return 0; 307 bad1: 308 malo_hal_detach(mh); 309 bad: 310 if_free(ifp); 311 sc->malo_invalid = 1; 312 313 return error; 314 } 315 316 int 317 malo_intr(void *arg) 318 { 319 struct malo_softc *sc = arg; 320 struct malo_hal *mh = sc->malo_mh; 321 uint32_t status; 322 323 if (sc->malo_invalid) { 324 /* 325 * The hardware is not ready/present, don't touch anything. 326 * Note this can happen early on if the IRQ is shared. 327 */ 328 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid; ignored\n", __func__); 329 return (FILTER_STRAY); 330 } 331 332 /* 333 * Figure out the reason(s) for the interrupt. 334 */ 335 malo_hal_getisr(mh, &status); /* NB: clears ISR too */ 336 if (status == 0) /* must be a shared irq */ 337 return (FILTER_STRAY); 338 339 DPRINTF(sc, MALO_DEBUG_INTR, "%s: status 0x%x imask 0x%x\n", 340 __func__, status, sc->malo_imask); 341 342 if (status & MALO_A2HRIC_BIT_RX_RDY) 343 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_rxtask); 344 if (status & MALO_A2HRIC_BIT_TX_DONE) 345 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_txtask); 346 if (status & MALO_A2HRIC_BIT_OPC_DONE) 347 malo_hal_cmddone(mh); 348 if (status & MALO_A2HRIC_BIT_MAC_EVENT) 349 ; 350 if (status & MALO_A2HRIC_BIT_RX_PROBLEM) 351 ; 352 if (status & MALO_A2HRIC_BIT_ICV_ERROR) { 353 /* TKIP ICV error */ 354 sc->malo_stats.mst_rx_badtkipicv++; 355 } 356 357 #ifdef MALO_DEBUG 358 if (((status | sc->malo_imask) ^ sc->malo_imask) != 0) 359 DPRINTF(sc, MALO_DEBUG_INTR, 360 "%s: can't handle interrupt status 0x%x\n", 361 __func__, status); 362 #endif 363 364 return (FILTER_HANDLED); 365 } 366 367 static void 368 malo_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 369 { 370 bus_addr_t *paddr = (bus_addr_t*) arg; 371 372 KASSERT(error == 0, ("error %u on bus_dma callback", error)); 373 374 *paddr = segs->ds_addr; 375 } 376 377 static int 378 malo_desc_setup(struct malo_softc *sc, const char *name, 379 struct malo_descdma *dd, 380 int nbuf, size_t bufsize, int ndesc, size_t descsize) 381 { 382 int error; 383 struct ifnet *ifp = sc->malo_ifp; 384 uint8_t *ds; 385 386 DPRINTF(sc, MALO_DEBUG_RESET, 387 "%s: %s DMA: %u bufs (%ju) %u desc/buf (%ju)\n", 388 __func__, name, nbuf, (uintmax_t) bufsize, 389 ndesc, (uintmax_t) descsize); 390 391 dd->dd_name = name; 392 dd->dd_desc_len = nbuf * ndesc * descsize; 393 394 /* 395 * Setup DMA descriptor area. 396 */ 397 error = bus_dma_tag_create(bus_get_dma_tag(sc->malo_dev),/* parent */ 398 PAGE_SIZE, 0, /* alignment, bounds */ 399 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 400 BUS_SPACE_MAXADDR, /* highaddr */ 401 NULL, NULL, /* filter, filterarg */ 402 dd->dd_desc_len, /* maxsize */ 403 1, /* nsegments */ 404 dd->dd_desc_len, /* maxsegsize */ 405 BUS_DMA_ALLOCNOW, /* flags */ 406 NULL, /* lockfunc */ 407 NULL, /* lockarg */ 408 &dd->dd_dmat); 409 if (error != 0) { 410 if_printf(ifp, "cannot allocate %s DMA tag\n", dd->dd_name); 411 return error; 412 } 413 414 /* allocate descriptors */ 415 error = bus_dmamap_create(dd->dd_dmat, BUS_DMA_NOWAIT, &dd->dd_dmamap); 416 if (error != 0) { 417 if_printf(ifp, "unable to create dmamap for %s descriptors, " 418 "error %u\n", dd->dd_name, error); 419 goto fail0; 420 } 421 422 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc, 423 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dd->dd_dmamap); 424 if (error != 0) { 425 if_printf(ifp, "unable to alloc memory for %u %s descriptors, " 426 "error %u\n", nbuf * ndesc, dd->dd_name, error); 427 goto fail1; 428 } 429 430 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap, 431 dd->dd_desc, dd->dd_desc_len, 432 malo_load_cb, &dd->dd_desc_paddr, BUS_DMA_NOWAIT); 433 if (error != 0) { 434 if_printf(ifp, "unable to map %s descriptors, error %u\n", 435 dd->dd_name, error); 436 goto fail2; 437 } 438 439 ds = dd->dd_desc; 440 memset(ds, 0, dd->dd_desc_len); 441 DPRINTF(sc, MALO_DEBUG_RESET, "%s: %s DMA map: %p (%lu) -> %p (%lu)\n", 442 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len, 443 (caddr_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len); 444 445 return 0; 446 fail2: 447 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 448 fail1: 449 bus_dmamap_destroy(dd->dd_dmat, dd->dd_dmamap); 450 fail0: 451 bus_dma_tag_destroy(dd->dd_dmat); 452 memset(dd, 0, sizeof(*dd)); 453 return error; 454 } 455 456 #define DS2PHYS(_dd, _ds) \ 457 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 458 459 static int 460 malo_rxdma_setup(struct malo_softc *sc) 461 { 462 struct ifnet *ifp = sc->malo_ifp; 463 int error, bsize, i; 464 struct malo_rxbuf *bf; 465 struct malo_rxdesc *ds; 466 467 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma, 468 malo_rxbuf, sizeof(struct malo_rxbuf), 469 1, sizeof(struct malo_rxdesc)); 470 if (error != 0) 471 return error; 472 473 /* 474 * Allocate rx buffers and set them up. 475 */ 476 bsize = malo_rxbuf * sizeof(struct malo_rxbuf); 477 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 478 if (bf == NULL) { 479 if_printf(ifp, "malloc of %u rx buffers failed\n", bsize); 480 return error; 481 } 482 sc->malo_rxdma.dd_bufptr = bf; 483 484 STAILQ_INIT(&sc->malo_rxbuf); 485 ds = sc->malo_rxdma.dd_desc; 486 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) { 487 bf->bf_desc = ds; 488 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds); 489 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 490 &bf->bf_dmamap); 491 if (error != 0) { 492 if_printf(ifp, "%s: unable to dmamap for rx buffer, " 493 "error %d\n", __func__, error); 494 return error; 495 } 496 /* NB: tail is intentional to preserve descriptor order */ 497 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list); 498 } 499 return 0; 500 } 501 502 static int 503 malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq) 504 { 505 struct ifnet *ifp = sc->malo_ifp; 506 int error, bsize, i; 507 struct malo_txbuf *bf; 508 struct malo_txdesc *ds; 509 510 error = malo_desc_setup(sc, "tx", &txq->dma, 511 malo_txbuf, sizeof(struct malo_txbuf), 512 MALO_TXDESC, sizeof(struct malo_txdesc)); 513 if (error != 0) 514 return error; 515 516 /* allocate and setup tx buffers */ 517 bsize = malo_txbuf * sizeof(struct malo_txbuf); 518 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 519 if (bf == NULL) { 520 if_printf(ifp, "malloc of %u tx buffers failed\n", 521 malo_txbuf); 522 return ENOMEM; 523 } 524 txq->dma.dd_bufptr = bf; 525 526 STAILQ_INIT(&txq->free); 527 txq->nfree = 0; 528 ds = txq->dma.dd_desc; 529 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) { 530 bf->bf_desc = ds; 531 bf->bf_daddr = DS2PHYS(&txq->dma, ds); 532 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 533 &bf->bf_dmamap); 534 if (error != 0) { 535 if_printf(ifp, "unable to create dmamap for tx " 536 "buffer %u, error %u\n", i, error); 537 return error; 538 } 539 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 540 txq->nfree++; 541 } 542 543 return 0; 544 } 545 546 static void 547 malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd) 548 { 549 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap); 550 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 551 bus_dmamap_destroy(dd->dd_dmat, dd->dd_dmamap); 552 bus_dma_tag_destroy(dd->dd_dmat); 553 554 memset(dd, 0, sizeof(*dd)); 555 } 556 557 static void 558 malo_rxdma_cleanup(struct malo_softc *sc) 559 { 560 struct malo_rxbuf *bf; 561 562 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 563 if (bf->bf_m != NULL) { 564 m_freem(bf->bf_m); 565 bf->bf_m = NULL; 566 } 567 if (bf->bf_dmamap != NULL) { 568 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 569 bf->bf_dmamap = NULL; 570 } 571 } 572 STAILQ_INIT(&sc->malo_rxbuf); 573 if (sc->malo_rxdma.dd_bufptr != NULL) { 574 free(sc->malo_rxdma.dd_bufptr, M_MALODEV); 575 sc->malo_rxdma.dd_bufptr = NULL; 576 } 577 if (sc->malo_rxdma.dd_desc_len != 0) 578 malo_desc_cleanup(sc, &sc->malo_rxdma); 579 } 580 581 static void 582 malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq) 583 { 584 struct malo_txbuf *bf; 585 struct ieee80211_node *ni; 586 587 STAILQ_FOREACH(bf, &txq->free, bf_list) { 588 if (bf->bf_m != NULL) { 589 m_freem(bf->bf_m); 590 bf->bf_m = NULL; 591 } 592 ni = bf->bf_node; 593 bf->bf_node = NULL; 594 if (ni != NULL) { 595 /* 596 * Reclaim node reference. 597 */ 598 ieee80211_free_node(ni); 599 } 600 if (bf->bf_dmamap != NULL) { 601 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 602 bf->bf_dmamap = NULL; 603 } 604 } 605 STAILQ_INIT(&txq->free); 606 txq->nfree = 0; 607 if (txq->dma.dd_bufptr != NULL) { 608 free(txq->dma.dd_bufptr, M_MALODEV); 609 txq->dma.dd_bufptr = NULL; 610 } 611 if (txq->dma.dd_desc_len != 0) 612 malo_desc_cleanup(sc, &txq->dma); 613 } 614 615 static void 616 malo_dma_cleanup(struct malo_softc *sc) 617 { 618 int i; 619 620 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 621 malo_txdma_cleanup(sc, &sc->malo_txq[i]); 622 623 malo_rxdma_cleanup(sc); 624 } 625 626 static int 627 malo_dma_setup(struct malo_softc *sc) 628 { 629 int error, i; 630 631 /* rxdma initializing. */ 632 error = malo_rxdma_setup(sc); 633 if (error != 0) 634 return error; 635 636 /* NB: we just have 1 tx queue now. */ 637 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 638 error = malo_txdma_setup(sc, &sc->malo_txq[i]); 639 if (error != 0) { 640 malo_dma_cleanup(sc); 641 642 return error; 643 } 644 645 malo_txq_init(sc, &sc->malo_txq[i], i); 646 } 647 648 return 0; 649 } 650 651 static void 652 malo_hal_set_rxtxdma(struct malo_softc *sc) 653 { 654 int i; 655 656 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, 657 sc->malo_hwdma.rxdesc_read); 658 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write, 659 sc->malo_hwdma.rxdesc_read); 660 661 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 662 malo_bar0_write4(sc, 663 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]); 664 } 665 } 666 667 /* 668 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are 669 * for compatibility with older firmware. For current firmware we send 670 * this information with a cmd block via malo_hal_sethwdma. 671 */ 672 static int 673 malo_setup_hwdma(struct malo_softc *sc) 674 { 675 int i; 676 struct malo_txq *txq; 677 678 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr; 679 680 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 681 txq = &sc->malo_txq[i]; 682 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr; 683 } 684 sc->malo_hwdma.maxnum_txwcb = malo_txbuf; 685 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES; 686 687 malo_hal_set_rxtxdma(sc); 688 689 return 0; 690 } 691 692 static void 693 malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum) 694 { 695 struct malo_txbuf *bf, *bn; 696 struct malo_txdesc *ds; 697 698 MALO_TXQ_LOCK_INIT(sc, txq); 699 txq->qnum = qnum; 700 txq->txpri = 0; /* XXX */ 701 702 STAILQ_FOREACH(bf, &txq->free, bf_list) { 703 bf->bf_txq = txq; 704 705 ds = bf->bf_desc; 706 bn = STAILQ_NEXT(bf, bf_list); 707 if (bn == NULL) 708 bn = STAILQ_FIRST(&txq->free); 709 ds->physnext = htole32(bn->bf_daddr); 710 } 711 STAILQ_INIT(&txq->active); 712 } 713 714 /* 715 * Reclaim resources for a setup queue. 716 */ 717 static void 718 malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq) 719 { 720 /* XXX hal work? */ 721 MALO_TXQ_LOCK_DESTROY(txq); 722 } 723 724 /* 725 * Allocate a tx buffer for sending a frame. 726 */ 727 static struct malo_txbuf * 728 malo_getbuf(struct malo_softc *sc, struct malo_txq *txq) 729 { 730 struct malo_txbuf *bf; 731 732 MALO_TXQ_LOCK(txq); 733 bf = STAILQ_FIRST(&txq->free); 734 if (bf != NULL) { 735 STAILQ_REMOVE_HEAD(&txq->free, bf_list); 736 txq->nfree--; 737 } 738 MALO_TXQ_UNLOCK(txq); 739 if (bf == NULL) { 740 DPRINTF(sc, MALO_DEBUG_XMIT, 741 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum); 742 sc->malo_stats.mst_tx_qstop++; 743 } 744 return bf; 745 } 746 747 static int 748 malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0) 749 { 750 struct mbuf *m; 751 int error; 752 753 /* 754 * Load the DMA map so any coalescing is done. This also calculates 755 * the number of descriptors we need. 756 */ 757 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 758 bf->bf_segs, &bf->bf_nseg, 759 BUS_DMA_NOWAIT); 760 if (error == EFBIG) { 761 /* XXX packet requires too many descriptors */ 762 bf->bf_nseg = MALO_TXDESC + 1; 763 } else if (error != 0) { 764 sc->malo_stats.mst_tx_busdma++; 765 m_freem(m0); 766 return error; 767 } 768 /* 769 * Discard null packets and check for packets that require too many 770 * TX descriptors. We try to convert the latter to a cluster. 771 */ 772 if (error == EFBIG) { /* too many desc's, linearize */ 773 sc->malo_stats.mst_tx_linear++; 774 m = m_defrag(m0, M_DONTWAIT); 775 if (m == NULL) { 776 m_freem(m0); 777 sc->malo_stats.mst_tx_nombuf++; 778 return ENOMEM; 779 } 780 m0 = m; 781 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 782 bf->bf_segs, &bf->bf_nseg, 783 BUS_DMA_NOWAIT); 784 if (error != 0) { 785 sc->malo_stats.mst_tx_busdma++; 786 m_freem(m0); 787 return error; 788 } 789 KASSERT(bf->bf_nseg <= MALO_TXDESC, 790 ("too many segments after defrag; nseg %u", bf->bf_nseg)); 791 } else if (bf->bf_nseg == 0) { /* null packet, discard */ 792 sc->malo_stats.mst_tx_nodata++; 793 m_freem(m0); 794 return EIO; 795 } 796 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n", 797 __func__, m0, m0->m_pkthdr.len); 798 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 799 bf->bf_m = m0; 800 801 return 0; 802 } 803 804 #ifdef MALO_DEBUG 805 static void 806 malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix) 807 { 808 const struct malo_rxdesc *ds = bf->bf_desc; 809 uint32_t status = le32toh(ds->status); 810 811 printf("R[%2u] (DS.V:%p DS.P:%p) NEXT:%08x DATA:%08x RC:%02x%s\n" 812 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x" 813 " RATE:%02x QOS:%04x\n", 814 ix, ds, (const struct malo_desc *)bf->bf_daddr, 815 le32toh(ds->physnext), le32toh(ds->physbuffdata), 816 ds->rxcontrol, 817 ds->rxcontrol != MALO_RXD_CTRL_DRIVER_OWN ? 818 "" : (status & MALO_RXD_STATUS_OK) ? " *" : " !", 819 ds->status, le16toh(ds->pktlen), ds->snr, ds->nf, ds->channel, 820 ds->rate, le16toh(ds->qosctrl)); 821 } 822 823 static void 824 malo_printtxbuf(const struct malo_txbuf *bf, u_int qnum, u_int ix) 825 { 826 const struct malo_txdesc *ds = bf->bf_desc; 827 uint32_t status = le32toh(ds->status); 828 829 printf("Q%u[%3u]", qnum, ix); 830 printf(" (DS.V:%p DS.P:%p)\n", 831 ds, (const struct malo_txdesc *)bf->bf_daddr); 832 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n", 833 le32toh(ds->physnext), 834 le32toh(ds->pktptr), le16toh(ds->pktlen), status, 835 status & MALO_TXD_STATUS_USED ? 836 "" : (status & 3) != 0 ? " *" : " !"); 837 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n", 838 ds->datarate, ds->txpriority, le16toh(ds->qosctrl), 839 le32toh(ds->sap_pktinfo), le16toh(ds->format)); 840 #if 0 841 { 842 const uint8_t *cp = (const uint8_t *) ds; 843 int i; 844 for (i = 0; i < sizeof(struct malo_txdesc); i++) { 845 printf("%02x ", cp[i]); 846 if (((i+1) % 16) == 0) 847 printf("\n"); 848 } 849 printf("\n"); 850 } 851 #endif 852 } 853 #endif /* MALO_DEBUG */ 854 855 static __inline void 856 malo_updatetxrate(struct ieee80211_node *ni, int rix) 857 { 858 #define N(x) (sizeof(x)/sizeof(x[0])) 859 static const int ieeerates[] = 860 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 }; 861 if (rix < N(ieeerates)) 862 ni->ni_txrate = ieeerates[rix]; 863 #undef N 864 } 865 866 static int 867 malo_fix2rate(int fix_rate) 868 { 869 #define N(x) (sizeof(x)/sizeof(x[0])) 870 static const int rates[] = 871 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 }; 872 return (fix_rate < N(rates) ? rates[fix_rate] : 0); 873 #undef N 874 } 875 876 /* idiomatic shorthands: MS = mask+shift, SM = shift+mask */ 877 #define MS(v,x) (((v) & x) >> x##_S) 878 #define SM(v,x) (((v) << x##_S) & x) 879 880 /* 881 * Process completed xmit descriptors from the specified queue. 882 */ 883 static int 884 malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq) 885 { 886 struct malo_txbuf *bf; 887 struct malo_txdesc *ds; 888 struct ieee80211_node *ni; 889 int nreaped; 890 uint32_t status; 891 892 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n", 893 __func__, txq->qnum); 894 for (nreaped = 0;; nreaped++) { 895 MALO_TXQ_LOCK(txq); 896 bf = STAILQ_FIRST(&txq->active); 897 if (bf == NULL) { 898 MALO_TXQ_UNLOCK(txq); 899 break; 900 } 901 ds = bf->bf_desc; 902 MALO_TXDESC_SYNC(txq, ds, 903 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 904 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) { 905 MALO_TXQ_UNLOCK(txq); 906 break; 907 } 908 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 909 MALO_TXQ_UNLOCK(txq); 910 911 #ifdef MALO_DEBUG 912 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC) 913 malo_printtxbuf(bf, txq->qnum, nreaped); 914 #endif 915 ni = bf->bf_node; 916 if (ni != NULL) { 917 status = le32toh(ds->status); 918 if (status & MALO_TXD_STATUS_OK) { 919 uint16_t format = le16toh(ds->format); 920 uint8_t txant = MS(format, MALO_TXD_ANTENNA); 921 922 sc->malo_stats.mst_ant_tx[txant]++; 923 if (status & MALO_TXD_STATUS_OK_RETRY) 924 sc->malo_stats.mst_tx_retries++; 925 if (status & MALO_TXD_STATUS_OK_MORE_RETRY) 926 sc->malo_stats.mst_tx_mretries++; 927 malo_updatetxrate(ni, ds->datarate); 928 sc->malo_stats.mst_tx_rate = ds->datarate; 929 } else { 930 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR) 931 sc->malo_stats.mst_tx_linkerror++; 932 if (status & MALO_TXD_STATUS_FAILED_XRETRY) 933 sc->malo_stats.mst_tx_xretries++; 934 if (status & MALO_TXD_STATUS_FAILED_AGING) 935 sc->malo_stats.mst_tx_aging++; 936 } 937 /* 938 * Do any tx complete callback. Note this must 939 * be done before releasing the node reference. 940 * XXX no way to figure out if frame was ACK'd 941 */ 942 if (bf->bf_m->m_flags & M_TXCB) { 943 /* XXX strip fw len in case header inspected */ 944 m_adj(bf->bf_m, sizeof(uint16_t)); 945 ieee80211_process_callback(ni, bf->bf_m, 946 (status & MALO_TXD_STATUS_OK) == 0); 947 } 948 /* 949 * Reclaim reference to node. 950 * 951 * NB: the node may be reclaimed here if, for example 952 * this is a DEAUTH message that was sent and the 953 * node was timed out due to inactivity. 954 */ 955 ieee80211_free_node(ni); 956 } 957 ds->status = htole32(MALO_TXD_STATUS_IDLE); 958 ds->pktlen = htole32(0); 959 960 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 961 BUS_DMASYNC_POSTWRITE); 962 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 963 m_freem(bf->bf_m); 964 bf->bf_m = NULL; 965 bf->bf_node = NULL; 966 967 MALO_TXQ_LOCK(txq); 968 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 969 txq->nfree++; 970 MALO_TXQ_UNLOCK(txq); 971 } 972 return nreaped; 973 } 974 975 /* 976 * Deferred processing of transmit interrupt. 977 */ 978 static void 979 malo_tx_proc(void *arg, int npending) 980 { 981 struct malo_softc *sc = arg; 982 struct ifnet *ifp = sc->malo_ifp; 983 int i, nreaped; 984 985 /* 986 * Process each active queue. 987 */ 988 nreaped = 0; 989 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 990 if (!STAILQ_EMPTY(&sc->malo_txq[i].active)) 991 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]); 992 } 993 994 if (nreaped != 0) { 995 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 996 ifp->if_timer = 0; 997 malo_start(ifp); 998 } 999 } 1000 1001 static int 1002 malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni, 1003 struct malo_txbuf *bf, struct mbuf *m0) 1004 { 1005 #define IEEE80211_DIR_DSTODS(wh) \ 1006 ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 1007 #define IS_DATA_FRAME(wh) \ 1008 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA) 1009 int error, ismcast, iswep; 1010 int copyhdrlen, hdrlen, pktlen; 1011 struct ieee80211_frame *wh; 1012 struct ieee80211com *ic = &sc->malo_ic; 1013 struct ifnet *ifp = sc->malo_ifp; 1014 struct malo_txdesc *ds; 1015 struct malo_txrec *tr; 1016 struct malo_txq *txq; 1017 uint16_t qos; 1018 1019 wh = mtod(m0, struct ieee80211_frame *); 1020 iswep = wh->i_fc[1] & IEEE80211_FC1_WEP; 1021 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1022 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh); 1023 pktlen = m0->m_pkthdr.len; 1024 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1025 if (IEEE80211_DIR_DSTODS(wh)) { 1026 qos = *(uint16_t *) 1027 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos); 1028 copyhdrlen -= sizeof(qos); 1029 } else 1030 qos = *(uint16_t *) 1031 (((struct ieee80211_qosframe *) wh)->i_qos); 1032 } else 1033 qos = 0; 1034 1035 if (iswep) { 1036 struct ieee80211_key *k; 1037 1038 /* 1039 * Construct the 802.11 header+trailer for an encrypted 1040 * frame. The only reason this can fail is because of an 1041 * unknown or unsupported cipher/key type. 1042 * 1043 * NB: we do this even though the firmware will ignore 1044 * what we've done for WEP and TKIP as we need the 1045 * ExtIV filled in for CCMP and this also adjusts 1046 * the headers which simplifies our work below. 1047 */ 1048 k = ieee80211_crypto_encap(ic, ni, m0); 1049 if (k == NULL) { 1050 /* 1051 * This can happen when the key is yanked after the 1052 * frame was queued. Just discard the frame; the 1053 * 802.11 layer counts failures and provides 1054 * debugging/diagnostics. 1055 */ 1056 m_freem(m0); 1057 return EIO; 1058 } 1059 1060 /* 1061 * Adjust the packet length for the crypto additions 1062 * done during encap and any other bits that the f/w 1063 * will add later on. 1064 */ 1065 pktlen = m0->m_pkthdr.len; 1066 1067 /* packet header may have moved, reset our local pointer */ 1068 wh = mtod(m0, struct ieee80211_frame *); 1069 } 1070 1071 if (bpf_peers_present(sc->malo_drvbpf)) { 1072 sc->malo_tx_th.wt_flags = 0; /* XXX */ 1073 if (iswep) 1074 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1075 sc->malo_tx_th.wt_txpower = ni->ni_txpower; 1076 sc->malo_tx_th.wt_antenna = sc->malo_txantenna; 1077 1078 bpf_mtap2(sc->malo_drvbpf, 1079 &sc->malo_tx_th, sc->malo_tx_th_len, m0); 1080 } 1081 1082 /* 1083 * Copy up/down the 802.11 header; the firmware requires 1084 * we present a 2-byte payload length followed by a 1085 * 4-address header (w/o QoS), followed (optionally) by 1086 * any WEP/ExtIV header (but only filled in for CCMP). 1087 * We are assured the mbuf has sufficient headroom to 1088 * prepend in-place by the setup of ic_headroom in 1089 * malo_attach. 1090 */ 1091 if (hdrlen < sizeof(struct malo_txrec)) { 1092 const int space = sizeof(struct malo_txrec) - hdrlen; 1093 if (M_LEADINGSPACE(m0) < space) { 1094 /* NB: should never happen */ 1095 device_printf(sc->malo_dev, 1096 "not enough headroom, need %d found %zd, " 1097 "m_flags 0x%x m_len %d\n", 1098 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len); 1099 ieee80211_dump_pkt(ic, 1100 mtod(m0, const uint8_t *), m0->m_len, 0, -1); 1101 m_freem(m0); 1102 /* XXX stat */ 1103 return EIO; 1104 } 1105 M_PREPEND(m0, space, M_NOWAIT); 1106 } 1107 tr = mtod(m0, struct malo_txrec *); 1108 if (wh != (struct ieee80211_frame *) &tr->wh) 1109 ovbcopy(wh, &tr->wh, hdrlen); 1110 /* 1111 * Note: the "firmware length" is actually the length of the fully 1112 * formed "802.11 payload". That is, it's everything except for 1113 * the 802.11 header. In particular this includes all crypto 1114 * material including the MIC! 1115 */ 1116 tr->fwlen = htole16(pktlen - hdrlen); 1117 1118 /* 1119 * Load the DMA map so any coalescing is done. This 1120 * also calculates the number of descriptors we need. 1121 */ 1122 error = malo_tx_dmasetup(sc, bf, m0); 1123 if (error != 0) 1124 return error; 1125 bf->bf_node = ni; /* NB: held reference */ 1126 m0 = bf->bf_m; /* NB: may have changed */ 1127 tr = mtod(m0, struct malo_txrec *); 1128 wh = (struct ieee80211_frame *)&tr->wh; 1129 1130 /* 1131 * Formulate tx descriptor. 1132 */ 1133 ds = bf->bf_desc; 1134 txq = bf->bf_txq; 1135 1136 ds->qosctrl = qos; /* NB: already little-endian */ 1137 ds->pktptr = htole32(bf->bf_segs[0].ds_addr); 1138 ds->pktlen = htole16(bf->bf_segs[0].ds_len); 1139 /* NB: pPhysNext setup once, don't touch */ 1140 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0; 1141 ds->sap_pktinfo = 0; 1142 ds->format = 0; 1143 1144 /* 1145 * Select transmit rate. 1146 */ 1147 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 1148 case IEEE80211_FC0_TYPE_MGT: 1149 sc->malo_stats.mst_tx_mgmt++; 1150 /* fall thru... */ 1151 case IEEE80211_FC0_TYPE_CTL: 1152 ds->txpriority = 1; 1153 break; 1154 case IEEE80211_FC0_TYPE_DATA: 1155 ds->txpriority = txq->qnum; 1156 break; 1157 default: 1158 if_printf(ifp, "bogus frame type 0x%x (%s)\n", 1159 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__); 1160 /* XXX statistic */ 1161 m_freem(m0); 1162 return EIO; 1163 } 1164 1165 #ifdef MALO_DEBUG 1166 if (IFF_DUMPPKTS_XMIT(sc)) 1167 ieee80211_dump_pkt(ic, 1168 mtod(m0, const uint8_t *)+sizeof(uint16_t), 1169 m0->m_len - sizeof(uint16_t), ds->datarate, -1); 1170 #endif 1171 1172 MALO_TXQ_LOCK(txq); 1173 if (!IS_DATA_FRAME(wh)) 1174 ds->status |= htole32(1); 1175 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED); 1176 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list); 1177 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1178 1179 ifp->if_opackets++; 1180 ifp->if_timer = 5; 1181 MALO_TXQ_UNLOCK(txq); 1182 return 0; 1183 #undef IEEE80211_DIR_DSTODS 1184 } 1185 1186 static void 1187 malo_start(struct ifnet *ifp) 1188 { 1189 int nqueued = 0; 1190 struct ether_header *eh; 1191 struct malo_softc *sc = ifp->if_softc; 1192 struct ieee80211_frame *wh; 1193 struct ieee80211_node *ni; 1194 struct ieee80211com *ic = &sc->malo_ic; 1195 struct malo_txbuf *bf = NULL; 1196 struct malo_txq *txq = NULL; 1197 struct mbuf *m; 1198 1199 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) 1200 return; 1201 1202 for (;;) { 1203 /* 1204 * Poll the management queue for frames; they 1205 * have priority over normal data frames. 1206 */ 1207 IF_DEQUEUE(&ic->ic_mgtq, m); 1208 if (m == NULL) { 1209 /* 1210 * No data frames go out unless we're associated. 1211 */ 1212 if (ic->ic_state != IEEE80211_S_RUN) { 1213 DPRINTF(sc, MALO_DEBUG_XMIT, 1214 "%s: discard data packet, state %s\n", 1215 __func__, 1216 ieee80211_state_name[ic->ic_state]); 1217 sc->malo_stats.mst_tx_discard++; 1218 break; 1219 } 1220 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1221 if (m == NULL) 1222 break; 1223 /* 1224 * Cancel any background scan. 1225 */ 1226 if (ic->ic_flags & IEEE80211_F_SCAN) 1227 ieee80211_cancel_scan(ic); 1228 1229 /* 1230 * Find the node for the destination so we can do 1231 * things like power save and fast frames aggregation. 1232 */ 1233 if (m->m_len < sizeof(struct ether_header) && 1234 (m = m_pullup(m, sizeof(struct ether_header))) == 1235 NULL) { 1236 ic->ic_stats.is_tx_nobuf++; /* XXX */ 1237 ni = NULL; 1238 goto bad; 1239 } 1240 eh = mtod(m, struct ether_header *); 1241 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1242 if (ni == NULL) { 1243 /* NB: ieee80211_find_txnode does stat+msg */ 1244 m_freem(m); 1245 goto bad; 1246 } 1247 /* calculate priority so we can find the tx queue */ 1248 if (ieee80211_classify(ic, m, ni)) { 1249 DPRINTF(sc, MALO_DEBUG_XMIT, 1250 "%s: discard, classification failure\n", 1251 __func__); 1252 m_freem(m); 1253 goto bad; 1254 } 1255 1256 txq = &sc->malo_txq[0]; 1257 1258 bf = malo_getbuf(sc, txq); 1259 if (bf == NULL) { 1260 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1261 ieee80211_free_node(ni); 1262 1263 /* XXX blocks other traffic */ 1264 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1265 sc->malo_stats.mst_tx_qstop++; 1266 break; 1267 } 1268 ifp->if_opackets++; 1269 1270 if (bpf_peers_present(ifp->if_bpf)) 1271 bpf_mtap(ifp->if_bpf, m); 1272 1273 /* 1274 * Encapsulate the packet in prep for transmission. 1275 */ 1276 m = ieee80211_encap(ic, m, ni); 1277 if (m == NULL) { 1278 DPRINTF(sc, MALO_DEBUG_XMIT, 1279 "%s: encapsulation failure\n", __func__); 1280 sc->malo_stats.mst_tx_encap++; 1281 goto bad; 1282 } 1283 } else { 1284 /* 1285 * Grab a TX buffer and associated resources. 1286 * Note that we depend on the classification 1287 * by the 802.11 layer to get to the right h/w 1288 * queue. Management frames must ALWAYS go on 1289 * queue 1 but we cannot just force that here 1290 * because we may receive non-mgt frames through 1291 * the ic_mgtq (e.g. null data frames). 1292 */ 1293 txq = &sc->malo_txq[0]; 1294 bf = malo_getbuf(sc, txq); 1295 if (bf == NULL) { 1296 IF_PREPEND(&ic->ic_mgtq, m); 1297 /* XXX stat */ 1298 break; 1299 } 1300 1301 /* 1302 * Hack! The referenced node pointer is in the 1303 * rcvif field of the packet header. This is 1304 * placed there by ieee80211_mgmt_output because 1305 * we need to hold the reference with the frame 1306 * and there's no other way (other than packet 1307 * tags which we consider too expensive to use) 1308 * to pass it along. 1309 */ 1310 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1311 m->m_pkthdr.rcvif = NULL; 1312 1313 wh = mtod(m, struct ieee80211_frame *); 1314 sc->malo_stats.mst_tx_mgmt++; 1315 1316 if (bpf_peers_present(ic->ic_rawbpf)) 1317 bpf_mtap(ic->ic_rawbpf, m); 1318 } 1319 1320 /* 1321 * Pass the frame to the h/w for transmission. 1322 */ 1323 if (malo_tx_start(sc, ni, bf, m)) { 1324 bad: 1325 ifp->if_oerrors++; 1326 if (bf != NULL) { 1327 bf->bf_m = NULL; 1328 bf->bf_node = NULL; 1329 MALO_TXQ_LOCK(txq); 1330 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1331 MALO_TXQ_UNLOCK(txq); 1332 } 1333 ieee80211_free_node(ni); 1334 continue; 1335 } 1336 nqueued++; 1337 1338 if (nqueued >= malo_txcoalesce) { 1339 /* 1340 * Poke the firmware to process queued frames; 1341 * see below about (lack of) locking. 1342 */ 1343 nqueued = 0; 1344 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1345 } 1346 } 1347 1348 if (nqueued) { 1349 /* 1350 * NB: We don't need to lock against tx done because 1351 * this just prods the firmware to check the transmit 1352 * descriptors. The firmware will also start fetching 1353 * descriptors by itself if it notices new ones are 1354 * present when it goes to deliver a tx done interrupt 1355 * to the host. So if we race with tx done processing 1356 * it's ok. Delivering the kick here rather than in 1357 * malo_tx_start is an optimization to avoid poking the 1358 * firmware for each packet. 1359 * 1360 * NB: the queue id isn't used so 0 is ok. 1361 */ 1362 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1363 } 1364 } 1365 1366 static void 1367 malo_watchdog(struct ifnet *ifp) 1368 { 1369 struct malo_softc *sc = ifp->if_softc; 1370 1371 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->malo_invalid) { 1372 if_printf(ifp, "watchdog timeout\n"); 1373 1374 /* XXX no way to reset h/w. now */ 1375 1376 ifp->if_oerrors++; 1377 sc->malo_stats.mst_watchdog++; 1378 } 1379 } 1380 1381 static int 1382 malo_hal_reset(struct malo_softc *sc) 1383 { 1384 static int first = 0; 1385 struct ieee80211com *ic = &sc->malo_ic; 1386 struct malo_hal *mh = sc->malo_mh; 1387 1388 if (first == 0) { 1389 /* 1390 * NB: when the device firstly is initialized, sometimes 1391 * firmware could override rx/tx dma registers so we re-set 1392 * these values once. 1393 */ 1394 malo_hal_set_rxtxdma(sc); 1395 first = 1; 1396 } 1397 1398 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna); 1399 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna); 1400 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE); 1401 malo_chan_set(sc, ic->ic_curchan); 1402 1403 /* XXX needs other stuffs? */ 1404 1405 return 1; 1406 } 1407 1408 static __inline struct mbuf * 1409 malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf) 1410 { 1411 struct mbuf *m; 1412 bus_addr_t paddr; 1413 int error; 1414 1415 /* XXX don't need mbuf, just dma buffer */ 1416 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1417 if (m == NULL) { 1418 sc->malo_stats.mst_rx_nombuf++; /* XXX */ 1419 return NULL; 1420 } 1421 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap, 1422 mtod(m, caddr_t), MJUMPAGESIZE, 1423 malo_load_cb, &paddr, BUS_DMA_NOWAIT); 1424 if (error != 0) { 1425 if_printf(sc->malo_ifp, 1426 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1427 m_freem(m); 1428 return NULL; 1429 } 1430 bf->bf_data = paddr; 1431 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 1432 1433 return m; 1434 } 1435 1436 static int 1437 malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf) 1438 { 1439 struct malo_rxdesc *ds; 1440 1441 ds = bf->bf_desc; 1442 if (bf->bf_m == NULL) { 1443 bf->bf_m = malo_getrxmbuf(sc, bf); 1444 if (bf->bf_m == NULL) { 1445 /* mark descriptor to be skipped */ 1446 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN; 1447 /* NB: don't need PREREAD */ 1448 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE); 1449 return ENOMEM; 1450 } 1451 } 1452 1453 /* 1454 * Setup descriptor. 1455 */ 1456 ds->qosctrl = 0; 1457 ds->snr = 0; 1458 ds->status = MALO_RXD_STATUS_IDLE; 1459 ds->channel = 0; 1460 ds->pktlen = htole16(MALO_RXSIZE); 1461 ds->nf = 0; 1462 ds->physbuffdata = htole32(bf->bf_data); 1463 /* NB: don't touch pPhysNext, set once */ 1464 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN; 1465 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1466 1467 return 0; 1468 } 1469 1470 /* 1471 * Setup the rx data structures. This should only be done once or we may get 1472 * out of sync with the firmware. 1473 */ 1474 static int 1475 malo_startrecv(struct malo_softc *sc) 1476 { 1477 struct malo_rxbuf *bf, *prev; 1478 struct malo_rxdesc *ds; 1479 1480 if (sc->malo_recvsetup == 1) { 1481 malo_mode_init(sc); /* set filters, etc. */ 1482 return 0; 1483 } 1484 1485 prev = NULL; 1486 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 1487 int error = malo_rxbuf_init(sc, bf); 1488 if (error != 0) { 1489 DPRINTF(sc, MALO_DEBUG_RECV, 1490 "%s: malo_rxbuf_init failed %d\n", 1491 __func__, error); 1492 return error; 1493 } 1494 if (prev != NULL) { 1495 ds = prev->bf_desc; 1496 ds->physnext = htole32(bf->bf_daddr); 1497 } 1498 prev = bf; 1499 } 1500 if (prev != NULL) { 1501 ds = prev->bf_desc; 1502 ds->physnext = 1503 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr); 1504 } 1505 1506 sc->malo_recvsetup = 1; 1507 1508 malo_mode_init(sc); /* set filters, etc. */ 1509 1510 return 0; 1511 } 1512 1513 static void 1514 malo_init(void *arg) 1515 { 1516 struct malo_softc *sc = (struct malo_softc *) arg; 1517 struct ieee80211com *ic = &sc->malo_ic; 1518 struct ifnet *ifp = sc->malo_ifp; 1519 struct malo_hal *mh = sc->malo_mh; 1520 int error; 1521 1522 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1523 __func__, ifp->if_flags); 1524 1525 if (!sc->malo_fw_loaded) { 1526 /* 1527 * Load firmware so we can get setup. 1528 */ 1529 error = malo_hal_fwload(mh, "malo8335-h", "malo8335-m"); 1530 if (error != 0) { 1531 if_printf(ifp, "unable to setup firmware\n"); 1532 return; 1533 } 1534 /* XXX gethwspecs() extracts correct informations? not maybe! */ 1535 error = malo_hal_gethwspecs(mh, &sc->malo_hwspecs); 1536 if (error != 0) { 1537 if_printf(ifp, "unable to fetch h/w specs\n"); 1538 return; 1539 } 1540 1541 DPRINTF(sc, MALO_DEBUG_FW, 1542 "malo_hal_gethwspecs: hwversion 0x%x hostif 0x%x" 1543 "maxnum_wcb 0x%x maxnum_mcaddr 0x%x maxnum_tx_wcb 0x%x" 1544 "regioncode 0x%x num_antenna 0x%x fw_releasenum 0x%x" 1545 "wcbbase0 0x%x rxdesc_read 0x%x rxdesc_write 0x%x" 1546 "ul_fw_awakecookie 0x%x w[4] = %x %x %x %x", 1547 sc->malo_hwspecs.hwversion, 1548 sc->malo_hwspecs.hostinterface, sc->malo_hwspecs.maxnum_wcb, 1549 sc->malo_hwspecs.maxnum_mcaddr, 1550 sc->malo_hwspecs.maxnum_tx_wcb, 1551 sc->malo_hwspecs.regioncode, sc->malo_hwspecs.num_antenna, 1552 sc->malo_hwspecs.fw_releasenum, sc->malo_hwspecs.wcbbase0, 1553 sc->malo_hwspecs.rxdesc_read, sc->malo_hwspecs.rxdesc_write, 1554 sc->malo_hwspecs.ul_fw_awakecookie, 1555 sc->malo_hwspecs.wcbbase[0], sc->malo_hwspecs.wcbbase[1], 1556 sc->malo_hwspecs.wcbbase[2], sc->malo_hwspecs.wcbbase[3]); 1557 1558 error = malo_setup_hwdma(sc); /* push to firmware */ 1559 /* NB: malo_setupdma prints msg */ 1560 if (error != 0) { 1561 if_printf(ifp, "%s: failed to set up h/w dma\n", 1562 __func__); 1563 return; 1564 } 1565 1566 /* set reddomain. */ 1567 ic->ic_regdomain = sc->malo_hwspecs.regioncode; 1568 1569 malo_announce(sc); 1570 1571 sc->malo_fw_loaded = 1; 1572 } 1573 1574 MALO_LOCK(sc); 1575 1576 /* 1577 * Stop anything previously setup. This is safe whether this is 1578 * the first time through or not. 1579 */ 1580 malo_stop_locked(ifp, 0); 1581 1582 /* 1583 * Push state to the firmware. 1584 */ 1585 if (!malo_hal_reset(sc)) { 1586 if_printf(ifp, "%s: unable to reset hardware\n", __func__); 1587 goto done; 1588 } 1589 1590 /* 1591 * Setup recv (once); transmit is already good to go. 1592 */ 1593 error = malo_startrecv(sc); 1594 if (error != 0) { 1595 if_printf(ifp, "%s: unable to start recv logic, error %d\n", 1596 __func__, error); 1597 goto done; 1598 } 1599 1600 /* 1601 * Enable interrupts. 1602 */ 1603 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY 1604 | MALO_A2HRIC_BIT_TX_DONE 1605 | MALO_A2HRIC_BIT_OPC_DONE 1606 | MALO_A2HRIC_BIT_MAC_EVENT 1607 | MALO_A2HRIC_BIT_RX_PROBLEM 1608 | MALO_A2HRIC_BIT_ICV_ERROR 1609 | MALO_A2HRIC_BIT_RADAR_DETECT 1610 | MALO_A2HRIC_BIT_CHAN_SWITCH; 1611 1612 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1613 ic->ic_state = IEEE80211_S_INIT; 1614 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp)); 1615 1616 malo_hal_intrset(mh, sc->malo_imask); 1617 1618 /* 1619 * The hardware should be ready to go now so it's safe to kick 1620 * the 802.11 state machine as it's likely to immediately call back 1621 * to us to send mgmt frames. 1622 */ 1623 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1624 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 1625 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 1626 } else 1627 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1628 1629 done: 1630 if (error != 0) 1631 if_printf(ifp, 1632 "error(%d) occurred during the initializing.\n", error); 1633 1634 MALO_UNLOCK(sc); 1635 1636 return; 1637 } 1638 1639 /* 1640 * Set the multicast filter contents into the hardware. 1641 */ 1642 static void 1643 malo_setmcastfilter(struct malo_softc *sc) 1644 { 1645 struct ieee80211com *ic = &sc->malo_ic; 1646 struct ifmultiaddr *ifma; 1647 struct ifnet *ifp = sc->malo_ifp; 1648 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX]; 1649 uint8_t *mp; 1650 int nmc; 1651 1652 mp = macs; 1653 nmc = 0; 1654 1655 if (ic->ic_opmode == IEEE80211_M_MONITOR || 1656 (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC))) 1657 goto all; 1658 1659 IF_ADDR_LOCK(ifp); 1660 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1661 if (ifma->ifma_addr->sa_family != AF_LINK) 1662 continue; 1663 1664 if (nmc == MALO_HAL_MCAST_MAX) { 1665 ifp->if_flags |= IFF_ALLMULTI; 1666 IF_ADDR_UNLOCK(ifp); 1667 goto all; 1668 } 1669 IEEE80211_ADDR_COPY(mp, 1670 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1671 1672 mp += IEEE80211_ADDR_LEN, nmc++; 1673 } 1674 IF_ADDR_UNLOCK(ifp); 1675 1676 malo_hal_setmcast(sc->malo_mh, nmc, macs); 1677 1678 all: 1679 /* 1680 * XXX we don't know how to set the f/w for supporting 1681 * IFF_ALLMULTI | IFF_PROMISC cases 1682 */ 1683 return; 1684 } 1685 1686 static int 1687 malo_mode_init(struct malo_softc *sc) 1688 { 1689 struct ieee80211com *ic = &sc->malo_ic; 1690 struct ifnet *ifp = ic->ic_ifp; 1691 struct malo_hal *mh = sc->malo_mh; 1692 1693 /* 1694 * Handle any link-level address change. Note that we only 1695 * need to force ic_myaddr; any other addresses are handled 1696 * as a byproduct of the ifnet code marking the interface 1697 * down then up. 1698 */ 1699 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp)); 1700 1701 /* 1702 * NB: Ignore promisc in hostap mode; it's set by the 1703 * bridge. This is wrong but we have no way to 1704 * identify internal requests (from the bridge) 1705 * versus external requests such as for tcpdump. 1706 */ 1707 malo_hal_setpromisc(mh, (ifp->if_flags & IFF_PROMISC) && 1708 ic->ic_opmode != IEEE80211_M_HOSTAP); 1709 malo_setmcastfilter(sc); 1710 1711 return ENXIO; 1712 } 1713 1714 static void 1715 malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq) 1716 { 1717 struct ieee80211_node *ni; 1718 struct malo_txbuf *bf; 1719 u_int ix; 1720 1721 /* 1722 * NB: this assumes output has been stopped and 1723 * we do not need to block malo_tx_tasklet 1724 */ 1725 for (ix = 0;; ix++) { 1726 MALO_TXQ_LOCK(txq); 1727 bf = STAILQ_FIRST(&txq->active); 1728 if (bf == NULL) { 1729 MALO_TXQ_UNLOCK(txq); 1730 break; 1731 } 1732 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 1733 MALO_TXQ_UNLOCK(txq); 1734 #ifdef MALO_DEBUG 1735 if (sc->malo_debug & MALO_DEBUG_RESET) { 1736 const struct malo_txrec *tr = 1737 mtod(bf->bf_m, const struct malo_txrec *); 1738 malo_printtxbuf(bf, txq->qnum, ix); 1739 ieee80211_dump_pkt(&sc->malo_ic, 1740 (const uint8_t *)&tr->wh, 1741 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1); 1742 } 1743 #endif /* MALO_DEBUG */ 1744 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1745 ni = bf->bf_node; 1746 bf->bf_node = NULL; 1747 if (ni != NULL) { 1748 /* 1749 * Reclaim node reference. 1750 */ 1751 ieee80211_free_node(ni); 1752 } 1753 m_freem(bf->bf_m); 1754 bf->bf_m = NULL; 1755 1756 MALO_TXQ_LOCK(txq); 1757 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1758 txq->nfree++; 1759 MALO_TXQ_UNLOCK(txq); 1760 } 1761 } 1762 1763 static void 1764 malo_stop_locked(struct ifnet *ifp, int disable) 1765 { 1766 int i; 1767 struct malo_softc *sc = ifp->if_softc; 1768 struct ieee80211com *ic = &sc->malo_ic; 1769 struct malo_hal *mh = sc->malo_mh; 1770 1771 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u if_flags 0x%x\n", 1772 __func__, sc->malo_invalid, ifp->if_flags); 1773 1774 MALO_LOCK_ASSERT(sc); 1775 1776 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1777 return; 1778 1779 /* 1780 * Shutdown the hardware and driver: 1781 * reset 802.11 state machine 1782 * turn off timers 1783 * disable interrupts 1784 * turn off the radio 1785 * clear transmit machinery 1786 * clear receive machinery 1787 * drain and release tx queues 1788 * reclaim beacon resources 1789 * power down hardware 1790 * 1791 * Note that some of this work is not possible if the hardware 1792 * is gone (invalid). 1793 */ 1794 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 1795 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1796 ifp->if_timer = 0; 1797 if (sc->malo_fw_loaded == 1) { 1798 /* diable interrupt. */ 1799 malo_hal_intrset(mh, 0); 1800 /* turn off the radio. */ 1801 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE); 1802 } 1803 1804 /* drain and release tx queues. */ 1805 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 1806 malo_tx_draintxq(sc, &sc->malo_txq[i]); 1807 } 1808 1809 static int 1810 malo_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1811 { 1812 #define MALO_IS_RUNNING(ifp) \ 1813 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1814 struct malo_softc *sc = ifp->if_softc; 1815 struct ieee80211com *ic = &sc->malo_ic; 1816 int error = 0; 1817 1818 MALO_LOCK(sc); 1819 1820 switch (cmd) { 1821 case SIOCSIFFLAGS: 1822 if (MALO_IS_RUNNING(ifp)) { 1823 /* 1824 * To avoid rescanning another access point, 1825 * do not call malo_init() here. Instead, 1826 * only reflect promisc mode settings. 1827 */ 1828 malo_mode_init(sc); 1829 } else if (ifp->if_flags & IFF_UP) { 1830 /* 1831 * Beware of being called during attach/detach 1832 * to reset promiscuous mode. In that case we 1833 * will still be marked UP but not RUNNING. 1834 * However trying to re-init the interface 1835 * is the wrong thing to do as we've already 1836 * torn down much of our state. There's 1837 * probably a better way to deal with this. 1838 */ 1839 if (!sc->malo_invalid) 1840 malo_init(sc); 1841 } else 1842 malo_stop_locked(ifp, 1); 1843 break; 1844 case SIOCADDMULTI: 1845 case SIOCDELMULTI: 1846 /* 1847 * The upper layer has already installed/removed 1848 * the multicast address(es), just recalculate the 1849 * multicast filter for the card. 1850 */ 1851 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1852 malo_mode_init(sc); 1853 break; 1854 default: 1855 error = ieee80211_ioctl(ic, cmd, data); 1856 if (error == ENETRESET) { 1857 if (MALO_IS_RUNNING(ifp) && 1858 ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 1859 malo_init(sc); 1860 error = 0; 1861 } 1862 if (error == ERESTART) { 1863 /* XXX we need to reset the device here. */ 1864 error = 0; 1865 } 1866 break; 1867 } 1868 1869 MALO_UNLOCK(sc); 1870 1871 return error; 1872 #undef MALO_IS_RUNNING 1873 } 1874 1875 /* 1876 * Callback from the 802.11 layer to update the slot time 1877 * based on the current setting. We use it to notify the 1878 * firmware of ERP changes and the f/w takes care of things 1879 * like slot time and preamble. 1880 */ 1881 static void 1882 malo_updateslot(struct ifnet *ifp) 1883 { 1884 struct malo_softc *sc = ifp->if_softc; 1885 struct ieee80211com *ic = &sc->malo_ic; 1886 struct malo_hal *mh = sc->malo_mh; 1887 int error; 1888 1889 /* NB: can be called early; suppress needless cmds */ 1890 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1891 return; 1892 1893 DPRINTF(sc, MALO_DEBUG_RESET, 1894 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n", 1895 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags, 1896 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags); 1897 1898 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1899 error = malo_hal_set_slot(mh, 1); 1900 else 1901 error = malo_hal_set_slot(mh, 0); 1902 1903 if (error != 0) 1904 device_printf(sc->malo_dev, "setting %s slot failed\n", 1905 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long"); 1906 } 1907 1908 static int 1909 malo_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1910 { 1911 struct ieee80211_node *ni = ic->ic_bss; 1912 struct ifnet *ifp = ic->ic_ifp; 1913 struct malo_softc *sc = ifp->if_softc; 1914 struct malo_hal *mh = sc->malo_mh; 1915 int error; 1916 1917 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1918 ieee80211_state_name[ic->ic_state], 1919 ieee80211_state_name[nstate]); 1920 1921 /* 1922 * Carry out firmware actions per-state. 1923 */ 1924 switch (nstate) { 1925 case IEEE80211_S_INIT: 1926 case IEEE80211_S_SCAN: 1927 case IEEE80211_S_AUTH: 1928 /* NB: do nothing. */ 1929 break; 1930 case IEEE80211_S_ASSOC: 1931 malo_hal_setradio(mh, 1, 1932 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? 1933 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE); 1934 break; 1935 case IEEE80211_S_RUN: 1936 DPRINTF(sc, MALO_DEBUG_STATE, 1937 "%s: %s(RUN): ic_flags 0x%08x bintvl %d bssid %s " 1938 "capinfo 0x%04x chan %d\n", 1939 ifp->if_xname, __func__, ic->ic_flags, 1940 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo, 1941 ieee80211_chan2ieee(ic, ic->ic_curchan)); 1942 1943 switch (ic->ic_opmode) { 1944 case IEEE80211_M_STA: 1945 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s: aid 0x%x\n", 1946 ic->ic_ifp->if_xname, __func__, ni->ni_associd); 1947 malo_hal_setassocid(sc->malo_mh, 1948 ni->ni_bssid, ni->ni_associd); 1949 1950 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 1951 /* automatic rate adaption */ 1952 malo_hal_set_rate(mh, ic->ic_curmode, 0); 1953 else 1954 /* fixed rate */ 1955 malo_hal_set_rate(mh, ic->ic_curmode, 1956 malo_fix2rate(ic->ic_fixed_rate)); 1957 break; 1958 default: 1959 break; 1960 } 1961 1962 break; 1963 default: 1964 if_printf(ifp, "%s: can't handle state %s -> %s\n", 1965 __func__, ieee80211_state_name[ic->ic_state], 1966 ieee80211_state_name[nstate]); 1967 } 1968 1969 /* 1970 * Invoke the parent method to complete the work. 1971 */ 1972 error = sc->malo_newstate(ic, nstate, arg); 1973 1974 return error; 1975 } 1976 1977 static int 1978 malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1979 const struct ieee80211_bpf_params *params) 1980 { 1981 struct ieee80211com *ic = ni->ni_ic; 1982 struct ifnet *ifp = ic->ic_ifp; 1983 struct malo_softc *sc = ifp->if_softc; 1984 struct malo_txbuf *bf; 1985 struct malo_txq *txq; 1986 1987 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) { 1988 ieee80211_free_node(ni); 1989 m_freem(m); 1990 return ENETDOWN; 1991 } 1992 1993 /* 1994 * Grab a TX buffer and associated resources. Note that we depend 1995 * on the classification by the 802.11 layer to get to the right h/w 1996 * queue. Management frames must ALWAYS go on queue 1 but we 1997 * cannot just force that here because we may receive non-mgt frames. 1998 */ 1999 txq = &sc->malo_txq[0]; 2000 bf = malo_getbuf(sc, txq); 2001 if (bf == NULL) { 2002 /* XXX blocks other traffic */ 2003 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2004 ieee80211_free_node(ni); 2005 m_freem(m); 2006 return ENOBUFS; 2007 } 2008 2009 /* 2010 * Pass the frame to the h/w for transmission. 2011 */ 2012 if (malo_tx_start(sc, ni, bf, m) != 0) { 2013 ifp->if_oerrors++; 2014 bf->bf_m = NULL; 2015 bf->bf_node = NULL; 2016 MALO_TXQ_LOCK(txq); 2017 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 2018 txq->nfree++; 2019 MALO_TXQ_UNLOCK(txq); 2020 2021 ieee80211_free_node(ni); 2022 return EIO; /* XXX */ 2023 } 2024 2025 /* 2026 * NB: We don't need to lock against tx done because this just 2027 * prods the firmware to check the transmit descriptors. The firmware 2028 * will also start fetching descriptors by itself if it notices 2029 * new ones are present when it goes to deliver a tx done interrupt 2030 * to the host. So if we race with tx done processing it's ok. 2031 * Delivering the kick here rather than in malo_tx_start is 2032 * an optimization to avoid poking the firmware for each packet. 2033 * 2034 * NB: the queue id isn't used so 0 is ok. 2035 */ 2036 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 2037 2038 return 0; 2039 } 2040 2041 static int 2042 malo_media_change(struct ifnet *ifp) 2043 { 2044 #define IS_UP(ifp) \ 2045 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 2046 int error; 2047 2048 error = ieee80211_media_change(ifp); 2049 if (error == ENETRESET) { 2050 struct malo_softc *sc = ifp->if_softc; 2051 2052 if (IS_UP(ifp)) 2053 malo_init(sc); 2054 error = 0; 2055 } 2056 return error; 2057 #undef IS_UP 2058 } 2059 2060 static void 2061 malo_bpfattach(struct malo_softc *sc) 2062 { 2063 struct ifnet *ifp = sc->malo_ifp; 2064 2065 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 2066 sizeof(struct ieee80211_frame) + sizeof(sc->malo_tx_th), 2067 &sc->malo_drvbpf); 2068 2069 /* 2070 * Initialize constant fields. 2071 * XXX make header lengths a multiple of 32-bits so subsequent 2072 * headers are properly aligned; this is a kludge to keep 2073 * certain applications happy. 2074 * 2075 * NB: the channel is setup each time we transition to the 2076 * RUN state to avoid filling it in for each frame. 2077 */ 2078 sc->malo_tx_th_len = roundup(sizeof(sc->malo_tx_th), sizeof(uint32_t)); 2079 sc->malo_tx_th.wt_ihdr.it_len = htole16(sc->malo_tx_th_len); 2080 sc->malo_tx_th.wt_ihdr.it_present = htole32(MALO_TX_RADIOTAP_PRESENT); 2081 2082 sc->malo_rx_th_len = roundup(sizeof(sc->malo_rx_th), sizeof(uint32_t)); 2083 sc->malo_rx_th.wr_ihdr.it_len = htole16(sc->malo_rx_th_len); 2084 sc->malo_rx_th.wr_ihdr.it_present = htole32(MALO_RX_RADIOTAP_PRESENT); 2085 } 2086 2087 static void 2088 malo_sysctlattach(struct malo_softc *sc) 2089 { 2090 #ifdef MALO_DEBUG 2091 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev); 2092 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev); 2093 2094 sc->malo_debug = malo_debug; 2095 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 2096 "debug", CTLFLAG_RW, &sc->malo_debug, 0, 2097 "control debugging printfs"); 2098 #endif 2099 } 2100 2101 static void 2102 malo_announce(struct malo_softc *sc) 2103 { 2104 struct ifnet *ifp = sc->malo_ifp; 2105 2106 if_printf(ifp, "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n", 2107 sc->malo_hwspecs.hwversion, 2108 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff, 2109 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff, 2110 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff, 2111 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff, 2112 sc->malo_hwspecs.regioncode); 2113 2114 if (bootverbose || malo_rxbuf != MALO_RXBUF) 2115 if_printf(ifp, "using %u rx buffers\n", malo_rxbuf); 2116 if (bootverbose || malo_txbuf != MALO_TXBUF) 2117 if_printf(ifp, "using %u tx buffers\n", malo_txbuf); 2118 } 2119 2120 /* 2121 * Convert net80211 channel to a HAL channel. 2122 */ 2123 static void 2124 malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan) 2125 { 2126 hc->channel = chan->ic_ieee; 2127 2128 *(uint32_t *)&hc->flags = 0; 2129 if (IEEE80211_IS_CHAN_2GHZ(chan)) 2130 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ; 2131 } 2132 2133 /* 2134 * Set/change channels. If the channel is really being changed, 2135 * it's done by reseting the chip. To accomplish this we must 2136 * first cleanup any pending DMA, then restart stuff after a la 2137 * malo_init. 2138 */ 2139 static int 2140 malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan) 2141 { 2142 struct malo_hal *mh = sc->malo_mh; 2143 struct malo_hal_channel hchan; 2144 2145 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n", 2146 __func__, chan->ic_freq, chan->ic_flags); 2147 2148 /* 2149 * Convert to a HAL channel description with the flags constrained 2150 * to reflect the current operating mode. 2151 */ 2152 malo_mapchan(&hchan, chan); 2153 malo_hal_intrset(mh, 0); /* disable interrupts */ 2154 malo_hal_setchannel(mh, &hchan); 2155 malo_hal_settxpower(mh, &hchan); 2156 2157 /* 2158 * Update internal state. 2159 */ 2160 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq); 2161 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq); 2162 if (IEEE80211_IS_CHAN_ANYG(chan)) { 2163 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G); 2164 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G); 2165 } else { 2166 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B); 2167 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B); 2168 } 2169 sc->malo_curchan = hchan; 2170 malo_hal_intrset(mh, sc->malo_imask); 2171 2172 return 0; 2173 } 2174 2175 static void 2176 malo_scan_start(struct ieee80211com *ic) 2177 { 2178 struct ifnet *ifp = ic->ic_ifp; 2179 struct malo_softc *sc = ifp->if_softc; 2180 2181 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2182 } 2183 2184 static void 2185 malo_scan_end(struct ieee80211com *ic) 2186 { 2187 struct ifnet *ifp = ic->ic_ifp; 2188 struct malo_softc *sc = ifp->if_softc; 2189 2190 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2191 } 2192 2193 static void 2194 malo_set_channel(struct ieee80211com *ic) 2195 { 2196 struct ifnet *ifp = ic->ic_ifp; 2197 struct malo_softc *sc = ifp->if_softc; 2198 2199 (void) malo_chan_set(sc, ic->ic_curchan); 2200 } 2201 2202 static void 2203 malo_rx_proc(void *arg, int npending) 2204 { 2205 #define IEEE80211_DIR_DSTODS(wh) \ 2206 ((((const struct ieee80211_frame *)wh)->i_fc[1] & \ 2207 IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 2208 struct malo_softc *sc = arg; 2209 struct malo_rxbuf *bf; 2210 struct ieee80211com *ic = &sc->malo_ic; 2211 struct ifnet *ifp = sc->malo_ifp; 2212 struct malo_rxdesc *ds; 2213 struct mbuf *m, *mnew; 2214 struct ieee80211_qosframe *wh; 2215 struct ieee80211_qosframe_addr4 *wh4; 2216 struct ieee80211_node *ni; 2217 int off, len, hdrlen, pktlen, rssi, ntodo; 2218 uint8_t *data, status; 2219 uint32_t readptr, writeptr; 2220 2221 DPRINTF(sc, MALO_DEBUG_RX_PROC, 2222 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n", 2223 __func__, npending, 2224 sc->malo_hwspecs.rxdesc_read, 2225 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read), 2226 sc->malo_hwspecs.rxdesc_write, 2227 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write)); 2228 2229 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read); 2230 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write); 2231 if (readptr == writeptr) 2232 return; 2233 2234 bf = sc->malo_rxnext; 2235 for (ntodo = malo_rxquota; ntodo > 0 && (readptr != writeptr); 2236 ntodo--) { 2237 if (bf == NULL) { 2238 bf = STAILQ_FIRST(&sc->malo_rxbuf); 2239 break; 2240 } 2241 ds = bf->bf_desc; 2242 if (bf->bf_m == NULL) { 2243 /* 2244 * If data allocation failed previously there 2245 * will be no buffer; try again to re-populate it. 2246 * Note the firmware will not advance to the next 2247 * descriptor with a dma buffer so we must mimic 2248 * this or we'll get out of sync. 2249 */ 2250 DPRINTF(sc, MALO_DEBUG_ANY, 2251 "%s: rx buf w/o dma memory\n", __func__); 2252 (void)malo_rxbuf_init(sc, bf); 2253 break; 2254 } 2255 MALO_RXDESC_SYNC(sc, ds, 2256 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2257 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN) 2258 break; 2259 2260 readptr = le32toh(ds->physnext); 2261 2262 #ifdef MALO_DEBUG 2263 if (sc->malo_debug & MALO_DEBUG_RECV_DESC) 2264 malo_printrxbuf(bf, 0); 2265 #endif 2266 status = ds->status; 2267 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) { 2268 ifp->if_ierrors++; 2269 goto rx_next; 2270 } 2271 /* 2272 * Sync the data buffer. 2273 */ 2274 len = le16toh(ds->pktlen); 2275 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 2276 BUS_DMASYNC_POSTREAD); 2277 /* 2278 * The 802.11 header is provided all or in part at the front; 2279 * use it to calculate the true size of the header that we'll 2280 * construct below. We use this to figure out where to copy 2281 * payload prior to constructing the header. 2282 */ 2283 m = bf->bf_m; 2284 data = mtod(m, uint8_t *); 2285 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t)); 2286 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4); 2287 2288 /* 2289 * Calculate RSSI. XXX wrong 2290 */ 2291 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */ 2292 if (rssi > 100) 2293 rssi = 100; 2294 2295 pktlen = hdrlen + (len - off); 2296 /* 2297 * NB: we know our frame is at least as large as 2298 * IEEE80211_MIN_LEN because there is a 4-address frame at 2299 * the front. Hence there's no need to vet the packet length. 2300 * If the frame in fact is too small it should be discarded 2301 * at the net80211 layer. 2302 */ 2303 2304 /* XXX don't need mbuf, just dma buffer */ 2305 mnew = malo_getrxmbuf(sc, bf); 2306 if (mnew == NULL) { 2307 ifp->if_ierrors++; 2308 goto rx_next; 2309 } 2310 2311 /* 2312 * Attach the dma buffer to the mbuf; malo_rxbuf_init will 2313 * re-setup the rx descriptor using the replacement dma 2314 * buffer we just installed above. 2315 */ 2316 bf->bf_m = mnew; 2317 m->m_data += off - hdrlen; 2318 m->m_pkthdr.len = m->m_len = pktlen; 2319 m->m_pkthdr.rcvif = ifp; 2320 2321 /* 2322 * Piece 802.11 header together. 2323 */ 2324 wh = mtod(m, struct ieee80211_qosframe *); 2325 /* NB: don't need to do this sometimes but ... */ 2326 /* XXX special case so we can memcpy after m_devget? */ 2327 ovbcopy(data + sizeof(uint16_t), wh, hdrlen); 2328 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2329 if (IEEE80211_DIR_DSTODS(wh)) { 2330 wh4 = mtod(m, 2331 struct ieee80211_qosframe_addr4*); 2332 *(uint16_t *)wh4->i_qos = ds->qosctrl; 2333 } else { 2334 *(uint16_t *)wh->i_qos = ds->qosctrl; 2335 } 2336 } 2337 if (sc->malo_drvbpf != NULL) { 2338 sc->malo_rx_th.wr_flags = 0; 2339 sc->malo_rx_th.wr_rate = ds->rate; 2340 sc->malo_rx_th.wr_antsignal = rssi; 2341 sc->malo_rx_th.wr_antnoise = ds->nf; 2342 2343 bpf_mtap2(sc->malo_drvbpf, 2344 &sc->malo_rx_th, sc->malo_rx_th_len, m); 2345 } 2346 #ifdef MALO_DEBUG 2347 if (IFF_DUMPPKTS_RECV(sc, wh)) { 2348 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 2349 len, ds->rate, rssi); 2350 } 2351 #endif 2352 ifp->if_ipackets++; 2353 2354 /* dispatch */ 2355 ni = ieee80211_find_rxnode(ic, 2356 (const struct ieee80211_frame_min *) wh); 2357 (void) ieee80211_input(ic, m, ni, rssi, ds->nf, 0/*XXX*/); 2358 ieee80211_free_node(ni); 2359 2360 rx_next: 2361 /* NB: ignore ENOMEM so we process more descriptors */ 2362 (void) malo_rxbuf_init(sc, bf); 2363 bf = STAILQ_NEXT(bf, bf_list); 2364 } 2365 2366 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr); 2367 sc->malo_rxnext = bf; 2368 2369 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 && 2370 !IFQ_IS_EMPTY(&ifp->if_snd)) 2371 malo_start(ifp); 2372 #undef IEEE80211_DIR_DSTODS 2373 } 2374 2375 static void 2376 malo_stop(struct ifnet *ifp, int disable) 2377 { 2378 struct malo_softc *sc = ifp->if_softc; 2379 2380 MALO_LOCK(sc); 2381 2382 malo_stop_locked(ifp, disable); 2383 2384 MALO_UNLOCK(sc); 2385 } 2386 2387 /* 2388 * Reclaim all tx queue resources. 2389 */ 2390 static void 2391 malo_tx_cleanup(struct malo_softc *sc) 2392 { 2393 int i; 2394 2395 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 2396 malo_tx_cleanupq(sc, &sc->malo_txq[i]); 2397 } 2398 2399 int 2400 malo_detach(struct malo_softc *sc) 2401 { 2402 struct ifnet *ifp = sc->malo_ifp; 2403 2404 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2405 __func__, ifp->if_flags); 2406 2407 malo_stop(ifp, 1); 2408 2409 if (sc->malo_tq != NULL) { 2410 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask); 2411 taskqueue_drain(sc->malo_tq, &sc->malo_txtask); 2412 taskqueue_free(sc->malo_tq); 2413 sc->malo_tq = NULL; 2414 } 2415 2416 bpfdetach(ifp); 2417 2418 /* 2419 * NB: the order of these is important: 2420 * o call the 802.11 layer before detaching the hal to 2421 * insure callbacks into the driver to delete global 2422 * key cache entries can be handled 2423 * o reclaim the tx queue data structures after calling 2424 * the 802.11 layer as we'll get called back to reclaim 2425 * node state and potentially want to use them 2426 * o to cleanup the tx queues the hal is called, so detach 2427 * it last 2428 * Other than that, it's straightforward... 2429 */ 2430 ieee80211_ifdetach(&sc->malo_ic); 2431 malo_dma_cleanup(sc); 2432 malo_tx_cleanup(sc); 2433 malo_hal_detach(sc->malo_mh); 2434 if_free(ifp); 2435 2436 MALO_LOCK_DESTROY(sc); 2437 2438 return 0; 2439 } 2440 2441 void 2442 malo_shutdown(struct malo_softc *sc) 2443 { 2444 2445 malo_stop(sc->malo_ifp, 1); 2446 } 2447 2448 void 2449 malo_suspend(struct malo_softc *sc) 2450 { 2451 struct ifnet *ifp = sc->malo_ifp; 2452 2453 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2454 __func__, ifp->if_flags); 2455 2456 malo_stop(ifp, 1); 2457 } 2458 2459 void 2460 malo_resume(struct malo_softc *sc) 2461 { 2462 struct ifnet *ifp = sc->malo_ifp; 2463 2464 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2465 __func__, ifp->if_flags); 2466 2467 if (ifp->if_flags & IFF_UP) { 2468 malo_init(sc); 2469 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2470 malo_start(ifp); 2471 } 2472 } 2473