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 "opt_malo.h" 38 39 #include <sys/param.h> 40 #include <sys/endian.h> 41 #include <sys/kernel.h> 42 #include <sys/socket.h> 43 #include <sys/sockio.h> 44 #include <sys/sysctl.h> 45 #include <sys/taskqueue.h> 46 47 #include <machine/bus.h> 48 #include <sys/bus.h> 49 50 #include <net/if.h> 51 #include <net/if_var.h> 52 #include <net/if_dl.h> 53 #include <net/if_media.h> 54 #include <net/if_types.h> 55 #include <net/ethernet.h> 56 57 #include <net80211/ieee80211_var.h> 58 #include <net80211/ieee80211_regdomain.h> 59 60 #include <net/bpf.h> 61 62 #include <dev/malo/if_malo.h> 63 64 SYSCTL_NODE(_hw, OID_AUTO, malo, CTLFLAG_RD, 0, 65 "Marvell 88w8335 driver parameters"); 66 67 static int malo_txcoalesce = 8; /* # tx pkts to q before poking f/w*/ 68 SYSCTL_INT(_hw_malo, OID_AUTO, txcoalesce, CTLFLAG_RWTUN, &malo_txcoalesce, 69 0, "tx buffers to send at once"); 70 static int malo_rxbuf = MALO_RXBUF; /* # rx buffers to allocate */ 71 SYSCTL_INT(_hw_malo, OID_AUTO, rxbuf, CTLFLAG_RWTUN, &malo_rxbuf, 72 0, "rx buffers allocated"); 73 static int malo_rxquota = MALO_RXBUF; /* # max buffers to process */ 74 SYSCTL_INT(_hw_malo, OID_AUTO, rxquota, CTLFLAG_RWTUN, &malo_rxquota, 75 0, "max rx buffers to process per interrupt"); 76 static int malo_txbuf = MALO_TXBUF; /* # tx buffers to allocate */ 77 SYSCTL_INT(_hw_malo, OID_AUTO, txbuf, CTLFLAG_RWTUN, &malo_txbuf, 78 0, "tx buffers allocated"); 79 80 #ifdef MALO_DEBUG 81 static int malo_debug = 0; 82 SYSCTL_INT(_hw_malo, OID_AUTO, debug, CTLFLAG_RWTUN, &malo_debug, 83 0, "control debugging printfs"); 84 enum { 85 MALO_DEBUG_XMIT = 0x00000001, /* basic xmit operation */ 86 MALO_DEBUG_XMIT_DESC = 0x00000002, /* xmit descriptors */ 87 MALO_DEBUG_RECV = 0x00000004, /* basic recv operation */ 88 MALO_DEBUG_RECV_DESC = 0x00000008, /* recv descriptors */ 89 MALO_DEBUG_RESET = 0x00000010, /* reset processing */ 90 MALO_DEBUG_INTR = 0x00000040, /* ISR */ 91 MALO_DEBUG_TX_PROC = 0x00000080, /* tx ISR proc */ 92 MALO_DEBUG_RX_PROC = 0x00000100, /* rx ISR proc */ 93 MALO_DEBUG_STATE = 0x00000400, /* 802.11 state transitions */ 94 MALO_DEBUG_NODE = 0x00000800, /* node management */ 95 MALO_DEBUG_RECV_ALL = 0x00001000, /* trace all frames (beacons) */ 96 MALO_DEBUG_FW = 0x00008000, /* firmware */ 97 MALO_DEBUG_ANY = 0xffffffff 98 }; 99 #define IS_BEACON(wh) \ 100 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK | \ 101 IEEE80211_FC0_SUBTYPE_MASK)) == \ 102 (IEEE80211_FC0_TYPE_MGT|IEEE80211_FC0_SUBTYPE_BEACON)) 103 #define IFF_DUMPPKTS_RECV(sc, wh) \ 104 (((sc->malo_debug & MALO_DEBUG_RECV) && \ 105 ((sc->malo_debug & MALO_DEBUG_RECV_ALL) || !IS_BEACON(wh))) || \ 106 (sc->malo_ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == \ 107 (IFF_DEBUG|IFF_LINK2)) 108 #define IFF_DUMPPKTS_XMIT(sc) \ 109 ((sc->malo_debug & MALO_DEBUG_XMIT) || \ 110 (sc->malo_ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == \ 111 (IFF_DEBUG | IFF_LINK2)) 112 #define DPRINTF(sc, m, fmt, ...) do { \ 113 if (sc->malo_debug & (m)) \ 114 printf(fmt, __VA_ARGS__); \ 115 } while (0) 116 #else 117 #define DPRINTF(sc, m, fmt, ...) do { \ 118 (void) sc; \ 119 } while (0) 120 #endif 121 122 static MALLOC_DEFINE(M_MALODEV, "malodev", "malo driver dma buffers"); 123 124 static struct ieee80211vap *malo_vap_create(struct ieee80211com *, 125 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 126 const uint8_t [IEEE80211_ADDR_LEN], 127 const uint8_t [IEEE80211_ADDR_LEN]); 128 static void malo_vap_delete(struct ieee80211vap *); 129 static int malo_dma_setup(struct malo_softc *); 130 static int malo_setup_hwdma(struct malo_softc *); 131 static void malo_txq_init(struct malo_softc *, struct malo_txq *, int); 132 static void malo_tx_cleanupq(struct malo_softc *, struct malo_txq *); 133 static void malo_start(struct ifnet *); 134 static void malo_watchdog(void *); 135 static int malo_ioctl(struct ifnet *, u_long, caddr_t); 136 static void malo_updateslot(struct ifnet *); 137 static int malo_newstate(struct ieee80211vap *, enum ieee80211_state, int); 138 static void malo_scan_start(struct ieee80211com *); 139 static void malo_scan_end(struct ieee80211com *); 140 static void malo_set_channel(struct ieee80211com *); 141 static int malo_raw_xmit(struct ieee80211_node *, struct mbuf *, 142 const struct ieee80211_bpf_params *); 143 static void malo_sysctlattach(struct malo_softc *); 144 static void malo_announce(struct malo_softc *); 145 static void malo_dma_cleanup(struct malo_softc *); 146 static void malo_stop_locked(struct ifnet *, int); 147 static int malo_chan_set(struct malo_softc *, struct ieee80211_channel *); 148 static int malo_mode_init(struct malo_softc *); 149 static void malo_tx_proc(void *, int); 150 static void malo_rx_proc(void *, int); 151 static void malo_init(void *); 152 153 /* 154 * Read/Write shorthands for accesses to BAR 0. Note that all BAR 1 155 * operations are done in the "hal" except getting H/W MAC address at 156 * malo_attach and there should be no reference to them here. 157 */ 158 static uint32_t 159 malo_bar0_read4(struct malo_softc *sc, bus_size_t off) 160 { 161 return bus_space_read_4(sc->malo_io0t, sc->malo_io0h, off); 162 } 163 164 static void 165 malo_bar0_write4(struct malo_softc *sc, bus_size_t off, uint32_t val) 166 { 167 DPRINTF(sc, MALO_DEBUG_FW, "%s: off 0x%jx val 0x%x\n", 168 __func__, (uintmax_t)off, val); 169 170 bus_space_write_4(sc->malo_io0t, sc->malo_io0h, off, val); 171 } 172 173 int 174 malo_attach(uint16_t devid, struct malo_softc *sc) 175 { 176 int error; 177 struct ieee80211com *ic; 178 struct ifnet *ifp; 179 struct malo_hal *mh; 180 uint8_t bands; 181 182 ifp = sc->malo_ifp = if_alloc(IFT_IEEE80211); 183 if (ifp == NULL) { 184 device_printf(sc->malo_dev, "can not if_alloc()\n"); 185 return ENOSPC; 186 } 187 ic = ifp->if_l2com; 188 189 MALO_LOCK_INIT(sc); 190 callout_init_mtx(&sc->malo_watchdog_timer, &sc->malo_mtx, 0); 191 192 /* set these up early for if_printf use */ 193 if_initname(ifp, device_get_name(sc->malo_dev), 194 device_get_unit(sc->malo_dev)); 195 196 mh = malo_hal_attach(sc->malo_dev, devid, 197 sc->malo_io1h, sc->malo_io1t, sc->malo_dmat); 198 if (mh == NULL) { 199 if_printf(ifp, "unable to attach HAL\n"); 200 error = EIO; 201 goto bad; 202 } 203 sc->malo_mh = mh; 204 205 /* 206 * Load firmware so we can get setup. We arbitrarily pick station 207 * firmware; we'll re-load firmware as needed so setting up 208 * the wrong mode isn't a big deal. 209 */ 210 error = malo_hal_fwload(mh, "malo8335-h", "malo8335-m"); 211 if (error != 0) { 212 if_printf(ifp, "unable to setup firmware\n"); 213 goto bad1; 214 } 215 /* XXX gethwspecs() extracts correct informations? not maybe! */ 216 error = malo_hal_gethwspecs(mh, &sc->malo_hwspecs); 217 if (error != 0) { 218 if_printf(ifp, "unable to fetch h/w specs\n"); 219 goto bad1; 220 } 221 222 DPRINTF(sc, MALO_DEBUG_FW, 223 "malo_hal_gethwspecs: hwversion 0x%x hostif 0x%x" 224 "maxnum_wcb 0x%x maxnum_mcaddr 0x%x maxnum_tx_wcb 0x%x" 225 "regioncode 0x%x num_antenna 0x%x fw_releasenum 0x%x" 226 "wcbbase0 0x%x rxdesc_read 0x%x rxdesc_write 0x%x" 227 "ul_fw_awakecookie 0x%x w[4] = %x %x %x %x", 228 sc->malo_hwspecs.hwversion, 229 sc->malo_hwspecs.hostinterface, sc->malo_hwspecs.maxnum_wcb, 230 sc->malo_hwspecs.maxnum_mcaddr, sc->malo_hwspecs.maxnum_tx_wcb, 231 sc->malo_hwspecs.regioncode, sc->malo_hwspecs.num_antenna, 232 sc->malo_hwspecs.fw_releasenum, sc->malo_hwspecs.wcbbase0, 233 sc->malo_hwspecs.rxdesc_read, sc->malo_hwspecs.rxdesc_write, 234 sc->malo_hwspecs.ul_fw_awakecookie, 235 sc->malo_hwspecs.wcbbase[0], sc->malo_hwspecs.wcbbase[1], 236 sc->malo_hwspecs.wcbbase[2], sc->malo_hwspecs.wcbbase[3]); 237 238 /* NB: firmware looks that it does not export regdomain info API. */ 239 bands = 0; 240 setbit(&bands, IEEE80211_MODE_11B); 241 setbit(&bands, IEEE80211_MODE_11G); 242 ieee80211_init_channels(ic, NULL, &bands); 243 244 sc->malo_txantenna = 0x2; /* h/w default */ 245 sc->malo_rxantenna = 0xffff; /* h/w default */ 246 247 /* 248 * Allocate tx + rx descriptors and populate the lists. 249 * We immediately push the information to the firmware 250 * as otherwise it gets upset. 251 */ 252 error = malo_dma_setup(sc); 253 if (error != 0) { 254 if_printf(ifp, "failed to setup descriptors: %d\n", error); 255 goto bad1; 256 } 257 error = malo_setup_hwdma(sc); /* push to firmware */ 258 if (error != 0) /* NB: malo_setupdma prints msg */ 259 goto bad2; 260 261 sc->malo_tq = taskqueue_create_fast("malo_taskq", M_NOWAIT, 262 taskqueue_thread_enqueue, &sc->malo_tq); 263 taskqueue_start_threads(&sc->malo_tq, 1, PI_NET, 264 "%s taskq", ifp->if_xname); 265 266 TASK_INIT(&sc->malo_rxtask, 0, malo_rx_proc, sc); 267 TASK_INIT(&sc->malo_txtask, 0, malo_tx_proc, sc); 268 269 ifp->if_softc = sc; 270 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 271 ifp->if_start = malo_start; 272 ifp->if_ioctl = malo_ioctl; 273 ifp->if_init = malo_init; 274 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 275 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 276 IFQ_SET_READY(&ifp->if_snd); 277 278 ic->ic_ifp = ifp; 279 /* XXX not right but it's not used anywhere important */ 280 ic->ic_phytype = IEEE80211_T_OFDM; 281 ic->ic_opmode = IEEE80211_M_STA; 282 ic->ic_caps = 283 IEEE80211_C_STA /* station mode supported */ 284 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 285 | IEEE80211_C_MONITOR /* monitor mode */ 286 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 287 | IEEE80211_C_SHSLOT /* short slot time supported */ 288 | IEEE80211_C_TXPMGT /* capable of txpow mgt */ 289 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 290 ; 291 292 /* 293 * Transmit requires space in the packet for a special format transmit 294 * record and optional padding between this record and the payload. 295 * Ask the net80211 layer to arrange this when encapsulating 296 * packets so we can add it efficiently. 297 */ 298 ic->ic_headroom = sizeof(struct malo_txrec) - 299 sizeof(struct ieee80211_frame); 300 301 /* call MI attach routine. */ 302 ieee80211_ifattach(ic, sc->malo_hwspecs.macaddr); 303 /* override default methods */ 304 ic->ic_vap_create = malo_vap_create; 305 ic->ic_vap_delete = malo_vap_delete; 306 ic->ic_raw_xmit = malo_raw_xmit; 307 ic->ic_updateslot = malo_updateslot; 308 309 ic->ic_scan_start = malo_scan_start; 310 ic->ic_scan_end = malo_scan_end; 311 ic->ic_set_channel = malo_set_channel; 312 313 sc->malo_invalid = 0; /* ready to go, enable int handling */ 314 315 ieee80211_radiotap_attach(ic, 316 &sc->malo_tx_th.wt_ihdr, sizeof(sc->malo_tx_th), 317 MALO_TX_RADIOTAP_PRESENT, 318 &sc->malo_rx_th.wr_ihdr, sizeof(sc->malo_rx_th), 319 MALO_RX_RADIOTAP_PRESENT); 320 321 /* 322 * Setup dynamic sysctl's. 323 */ 324 malo_sysctlattach(sc); 325 326 if (bootverbose) 327 ieee80211_announce(ic); 328 malo_announce(sc); 329 330 return 0; 331 bad2: 332 malo_dma_cleanup(sc); 333 bad1: 334 malo_hal_detach(mh); 335 bad: 336 if_free(ifp); 337 sc->malo_invalid = 1; 338 339 return error; 340 } 341 342 static struct ieee80211vap * 343 malo_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 344 enum ieee80211_opmode opmode, int flags, 345 const uint8_t bssid[IEEE80211_ADDR_LEN], 346 const uint8_t mac[IEEE80211_ADDR_LEN]) 347 { 348 struct ifnet *ifp = ic->ic_ifp; 349 struct malo_vap *mvp; 350 struct ieee80211vap *vap; 351 352 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 353 if_printf(ifp, "multiple vaps not supported\n"); 354 return NULL; 355 } 356 switch (opmode) { 357 case IEEE80211_M_STA: 358 if (opmode == IEEE80211_M_STA) 359 flags |= IEEE80211_CLONE_NOBEACONS; 360 /* fall thru... */ 361 case IEEE80211_M_MONITOR: 362 break; 363 default: 364 if_printf(ifp, "%s mode not supported\n", 365 ieee80211_opmode_name[opmode]); 366 return NULL; /* unsupported */ 367 } 368 mvp = (struct malo_vap *) malloc(sizeof(struct malo_vap), 369 M_80211_VAP, M_NOWAIT | M_ZERO); 370 if (mvp == NULL) { 371 if_printf(ifp, "cannot allocate vap state block\n"); 372 return NULL; 373 } 374 vap = &mvp->malo_vap; 375 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 376 377 /* override state transition machine */ 378 mvp->malo_newstate = vap->iv_newstate; 379 vap->iv_newstate = malo_newstate; 380 381 /* complete setup */ 382 ieee80211_vap_attach(vap, 383 ieee80211_media_change, ieee80211_media_status); 384 ic->ic_opmode = opmode; 385 return vap; 386 } 387 388 static void 389 malo_vap_delete(struct ieee80211vap *vap) 390 { 391 struct malo_vap *mvp = MALO_VAP(vap); 392 393 ieee80211_vap_detach(vap); 394 free(mvp, M_80211_VAP); 395 } 396 397 int 398 malo_intr(void *arg) 399 { 400 struct malo_softc *sc = arg; 401 struct malo_hal *mh = sc->malo_mh; 402 uint32_t status; 403 404 if (sc->malo_invalid) { 405 /* 406 * The hardware is not ready/present, don't touch anything. 407 * Note this can happen early on if the IRQ is shared. 408 */ 409 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid; ignored\n", __func__); 410 return (FILTER_STRAY); 411 } 412 413 /* 414 * Figure out the reason(s) for the interrupt. 415 */ 416 malo_hal_getisr(mh, &status); /* NB: clears ISR too */ 417 if (status == 0) /* must be a shared irq */ 418 return (FILTER_STRAY); 419 420 DPRINTF(sc, MALO_DEBUG_INTR, "%s: status 0x%x imask 0x%x\n", 421 __func__, status, sc->malo_imask); 422 423 if (status & MALO_A2HRIC_BIT_RX_RDY) 424 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_rxtask); 425 if (status & MALO_A2HRIC_BIT_TX_DONE) 426 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_txtask); 427 if (status & MALO_A2HRIC_BIT_OPC_DONE) 428 malo_hal_cmddone(mh); 429 if (status & MALO_A2HRIC_BIT_MAC_EVENT) 430 ; 431 if (status & MALO_A2HRIC_BIT_RX_PROBLEM) 432 ; 433 if (status & MALO_A2HRIC_BIT_ICV_ERROR) { 434 /* TKIP ICV error */ 435 sc->malo_stats.mst_rx_badtkipicv++; 436 } 437 #ifdef MALO_DEBUG 438 if (((status | sc->malo_imask) ^ sc->malo_imask) != 0) 439 DPRINTF(sc, MALO_DEBUG_INTR, 440 "%s: can't handle interrupt status 0x%x\n", 441 __func__, status); 442 #endif 443 return (FILTER_HANDLED); 444 } 445 446 static void 447 malo_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 448 { 449 bus_addr_t *paddr = (bus_addr_t*) arg; 450 451 KASSERT(error == 0, ("error %u on bus_dma callback", error)); 452 453 *paddr = segs->ds_addr; 454 } 455 456 static int 457 malo_desc_setup(struct malo_softc *sc, const char *name, 458 struct malo_descdma *dd, 459 int nbuf, size_t bufsize, int ndesc, size_t descsize) 460 { 461 int error; 462 struct ifnet *ifp = sc->malo_ifp; 463 uint8_t *ds; 464 465 DPRINTF(sc, MALO_DEBUG_RESET, 466 "%s: %s DMA: %u bufs (%ju) %u desc/buf (%ju)\n", 467 __func__, name, nbuf, (uintmax_t) bufsize, 468 ndesc, (uintmax_t) descsize); 469 470 dd->dd_name = name; 471 dd->dd_desc_len = nbuf * ndesc * descsize; 472 473 /* 474 * Setup DMA descriptor area. 475 */ 476 error = bus_dma_tag_create(bus_get_dma_tag(sc->malo_dev),/* parent */ 477 PAGE_SIZE, 0, /* alignment, bounds */ 478 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 479 BUS_SPACE_MAXADDR, /* highaddr */ 480 NULL, NULL, /* filter, filterarg */ 481 dd->dd_desc_len, /* maxsize */ 482 1, /* nsegments */ 483 dd->dd_desc_len, /* maxsegsize */ 484 BUS_DMA_ALLOCNOW, /* flags */ 485 NULL, /* lockfunc */ 486 NULL, /* lockarg */ 487 &dd->dd_dmat); 488 if (error != 0) { 489 if_printf(ifp, "cannot allocate %s DMA tag\n", dd->dd_name); 490 return error; 491 } 492 493 /* allocate descriptors */ 494 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc, 495 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dd->dd_dmamap); 496 if (error != 0) { 497 if_printf(ifp, "unable to alloc memory for %u %s descriptors, " 498 "error %u\n", nbuf * ndesc, dd->dd_name, error); 499 goto fail1; 500 } 501 502 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap, 503 dd->dd_desc, dd->dd_desc_len, 504 malo_load_cb, &dd->dd_desc_paddr, BUS_DMA_NOWAIT); 505 if (error != 0) { 506 if_printf(ifp, "unable to map %s descriptors, error %u\n", 507 dd->dd_name, error); 508 goto fail2; 509 } 510 511 ds = dd->dd_desc; 512 memset(ds, 0, dd->dd_desc_len); 513 DPRINTF(sc, MALO_DEBUG_RESET, 514 "%s: %s DMA map: %p (%lu) -> 0x%jx (%lu)\n", 515 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len, 516 (uintmax_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len); 517 518 return 0; 519 fail2: 520 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 521 fail1: 522 bus_dma_tag_destroy(dd->dd_dmat); 523 memset(dd, 0, sizeof(*dd)); 524 return error; 525 } 526 527 #define DS2PHYS(_dd, _ds) \ 528 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 529 530 static int 531 malo_rxdma_setup(struct malo_softc *sc) 532 { 533 struct ifnet *ifp = sc->malo_ifp; 534 int error, bsize, i; 535 struct malo_rxbuf *bf; 536 struct malo_rxdesc *ds; 537 538 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma, 539 malo_rxbuf, sizeof(struct malo_rxbuf), 540 1, sizeof(struct malo_rxdesc)); 541 if (error != 0) 542 return error; 543 544 /* 545 * Allocate rx buffers and set them up. 546 */ 547 bsize = malo_rxbuf * sizeof(struct malo_rxbuf); 548 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 549 if (bf == NULL) { 550 if_printf(ifp, "malloc of %u rx buffers failed\n", bsize); 551 return error; 552 } 553 sc->malo_rxdma.dd_bufptr = bf; 554 555 STAILQ_INIT(&sc->malo_rxbuf); 556 ds = sc->malo_rxdma.dd_desc; 557 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) { 558 bf->bf_desc = ds; 559 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds); 560 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 561 &bf->bf_dmamap); 562 if (error != 0) { 563 if_printf(ifp, "%s: unable to dmamap for rx buffer, " 564 "error %d\n", __func__, error); 565 return error; 566 } 567 /* NB: tail is intentional to preserve descriptor order */ 568 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list); 569 } 570 return 0; 571 } 572 573 static int 574 malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq) 575 { 576 struct ifnet *ifp = sc->malo_ifp; 577 int error, bsize, i; 578 struct malo_txbuf *bf; 579 struct malo_txdesc *ds; 580 581 error = malo_desc_setup(sc, "tx", &txq->dma, 582 malo_txbuf, sizeof(struct malo_txbuf), 583 MALO_TXDESC, sizeof(struct malo_txdesc)); 584 if (error != 0) 585 return error; 586 587 /* allocate and setup tx buffers */ 588 bsize = malo_txbuf * sizeof(struct malo_txbuf); 589 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 590 if (bf == NULL) { 591 if_printf(ifp, "malloc of %u tx buffers failed\n", 592 malo_txbuf); 593 return ENOMEM; 594 } 595 txq->dma.dd_bufptr = bf; 596 597 STAILQ_INIT(&txq->free); 598 txq->nfree = 0; 599 ds = txq->dma.dd_desc; 600 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) { 601 bf->bf_desc = ds; 602 bf->bf_daddr = DS2PHYS(&txq->dma, ds); 603 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 604 &bf->bf_dmamap); 605 if (error != 0) { 606 if_printf(ifp, "unable to create dmamap for tx " 607 "buffer %u, error %u\n", i, error); 608 return error; 609 } 610 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 611 txq->nfree++; 612 } 613 614 return 0; 615 } 616 617 static void 618 malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd) 619 { 620 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap); 621 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 622 bus_dma_tag_destroy(dd->dd_dmat); 623 624 memset(dd, 0, sizeof(*dd)); 625 } 626 627 static void 628 malo_rxdma_cleanup(struct malo_softc *sc) 629 { 630 struct malo_rxbuf *bf; 631 632 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 633 if (bf->bf_m != NULL) { 634 m_freem(bf->bf_m); 635 bf->bf_m = NULL; 636 } 637 if (bf->bf_dmamap != NULL) { 638 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 639 bf->bf_dmamap = NULL; 640 } 641 } 642 STAILQ_INIT(&sc->malo_rxbuf); 643 if (sc->malo_rxdma.dd_bufptr != NULL) { 644 free(sc->malo_rxdma.dd_bufptr, M_MALODEV); 645 sc->malo_rxdma.dd_bufptr = NULL; 646 } 647 if (sc->malo_rxdma.dd_desc_len != 0) 648 malo_desc_cleanup(sc, &sc->malo_rxdma); 649 } 650 651 static void 652 malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq) 653 { 654 struct malo_txbuf *bf; 655 struct ieee80211_node *ni; 656 657 STAILQ_FOREACH(bf, &txq->free, bf_list) { 658 if (bf->bf_m != NULL) { 659 m_freem(bf->bf_m); 660 bf->bf_m = NULL; 661 } 662 ni = bf->bf_node; 663 bf->bf_node = NULL; 664 if (ni != NULL) { 665 /* 666 * Reclaim node reference. 667 */ 668 ieee80211_free_node(ni); 669 } 670 if (bf->bf_dmamap != NULL) { 671 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 672 bf->bf_dmamap = NULL; 673 } 674 } 675 STAILQ_INIT(&txq->free); 676 txq->nfree = 0; 677 if (txq->dma.dd_bufptr != NULL) { 678 free(txq->dma.dd_bufptr, M_MALODEV); 679 txq->dma.dd_bufptr = NULL; 680 } 681 if (txq->dma.dd_desc_len != 0) 682 malo_desc_cleanup(sc, &txq->dma); 683 } 684 685 static void 686 malo_dma_cleanup(struct malo_softc *sc) 687 { 688 int i; 689 690 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 691 malo_txdma_cleanup(sc, &sc->malo_txq[i]); 692 693 malo_rxdma_cleanup(sc); 694 } 695 696 static int 697 malo_dma_setup(struct malo_softc *sc) 698 { 699 int error, i; 700 701 /* rxdma initializing. */ 702 error = malo_rxdma_setup(sc); 703 if (error != 0) 704 return error; 705 706 /* NB: we just have 1 tx queue now. */ 707 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 708 error = malo_txdma_setup(sc, &sc->malo_txq[i]); 709 if (error != 0) { 710 malo_dma_cleanup(sc); 711 712 return error; 713 } 714 715 malo_txq_init(sc, &sc->malo_txq[i], i); 716 } 717 718 return 0; 719 } 720 721 static void 722 malo_hal_set_rxtxdma(struct malo_softc *sc) 723 { 724 int i; 725 726 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, 727 sc->malo_hwdma.rxdesc_read); 728 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write, 729 sc->malo_hwdma.rxdesc_read); 730 731 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 732 malo_bar0_write4(sc, 733 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]); 734 } 735 } 736 737 /* 738 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are 739 * for compatibility with older firmware. For current firmware we send 740 * this information with a cmd block via malo_hal_sethwdma. 741 */ 742 static int 743 malo_setup_hwdma(struct malo_softc *sc) 744 { 745 int i; 746 struct malo_txq *txq; 747 748 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr; 749 750 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 751 txq = &sc->malo_txq[i]; 752 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr; 753 } 754 sc->malo_hwdma.maxnum_txwcb = malo_txbuf; 755 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES; 756 757 malo_hal_set_rxtxdma(sc); 758 759 return 0; 760 } 761 762 static void 763 malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum) 764 { 765 struct malo_txbuf *bf, *bn; 766 struct malo_txdesc *ds; 767 768 MALO_TXQ_LOCK_INIT(sc, txq); 769 txq->qnum = qnum; 770 txq->txpri = 0; /* XXX */ 771 772 STAILQ_FOREACH(bf, &txq->free, bf_list) { 773 bf->bf_txq = txq; 774 775 ds = bf->bf_desc; 776 bn = STAILQ_NEXT(bf, bf_list); 777 if (bn == NULL) 778 bn = STAILQ_FIRST(&txq->free); 779 ds->physnext = htole32(bn->bf_daddr); 780 } 781 STAILQ_INIT(&txq->active); 782 } 783 784 /* 785 * Reclaim resources for a setup queue. 786 */ 787 static void 788 malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq) 789 { 790 /* XXX hal work? */ 791 MALO_TXQ_LOCK_DESTROY(txq); 792 } 793 794 /* 795 * Allocate a tx buffer for sending a frame. 796 */ 797 static struct malo_txbuf * 798 malo_getbuf(struct malo_softc *sc, struct malo_txq *txq) 799 { 800 struct malo_txbuf *bf; 801 802 MALO_TXQ_LOCK(txq); 803 bf = STAILQ_FIRST(&txq->free); 804 if (bf != NULL) { 805 STAILQ_REMOVE_HEAD(&txq->free, bf_list); 806 txq->nfree--; 807 } 808 MALO_TXQ_UNLOCK(txq); 809 if (bf == NULL) { 810 DPRINTF(sc, MALO_DEBUG_XMIT, 811 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum); 812 sc->malo_stats.mst_tx_qstop++; 813 } 814 return bf; 815 } 816 817 static int 818 malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0) 819 { 820 struct mbuf *m; 821 int error; 822 823 /* 824 * Load the DMA map so any coalescing is done. This also calculates 825 * the number of descriptors we need. 826 */ 827 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 828 bf->bf_segs, &bf->bf_nseg, 829 BUS_DMA_NOWAIT); 830 if (error == EFBIG) { 831 /* XXX packet requires too many descriptors */ 832 bf->bf_nseg = MALO_TXDESC + 1; 833 } else if (error != 0) { 834 sc->malo_stats.mst_tx_busdma++; 835 m_freem(m0); 836 return error; 837 } 838 /* 839 * Discard null packets and check for packets that require too many 840 * TX descriptors. We try to convert the latter to a cluster. 841 */ 842 if (error == EFBIG) { /* too many desc's, linearize */ 843 sc->malo_stats.mst_tx_linear++; 844 m = m_defrag(m0, M_NOWAIT); 845 if (m == NULL) { 846 m_freem(m0); 847 sc->malo_stats.mst_tx_nombuf++; 848 return ENOMEM; 849 } 850 m0 = m; 851 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 852 bf->bf_segs, &bf->bf_nseg, 853 BUS_DMA_NOWAIT); 854 if (error != 0) { 855 sc->malo_stats.mst_tx_busdma++; 856 m_freem(m0); 857 return error; 858 } 859 KASSERT(bf->bf_nseg <= MALO_TXDESC, 860 ("too many segments after defrag; nseg %u", bf->bf_nseg)); 861 } else if (bf->bf_nseg == 0) { /* null packet, discard */ 862 sc->malo_stats.mst_tx_nodata++; 863 m_freem(m0); 864 return EIO; 865 } 866 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n", 867 __func__, m0, m0->m_pkthdr.len); 868 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 869 bf->bf_m = m0; 870 871 return 0; 872 } 873 874 #ifdef MALO_DEBUG 875 static void 876 malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix) 877 { 878 const struct malo_rxdesc *ds = bf->bf_desc; 879 uint32_t status = le32toh(ds->status); 880 881 printf("R[%2u] (DS.V:%p DS.P:0x%jx) NEXT:%08x DATA:%08x RC:%02x%s\n" 882 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x" 883 " RATE:%02x QOS:%04x\n", ix, ds, (uintmax_t)bf->bf_daddr, 884 le32toh(ds->physnext), le32toh(ds->physbuffdata), 885 ds->rxcontrol, 886 ds->rxcontrol != MALO_RXD_CTRL_DRIVER_OWN ? 887 "" : (status & MALO_RXD_STATUS_OK) ? " *" : " !", 888 ds->status, le16toh(ds->pktlen), ds->snr, ds->nf, ds->channel, 889 ds->rate, le16toh(ds->qosctrl)); 890 } 891 892 static void 893 malo_printtxbuf(const struct malo_txbuf *bf, u_int qnum, u_int ix) 894 { 895 const struct malo_txdesc *ds = bf->bf_desc; 896 uint32_t status = le32toh(ds->status); 897 898 printf("Q%u[%3u]", qnum, ix); 899 printf(" (DS.V:%p DS.P:0x%jx)\n", ds, (uintmax_t)bf->bf_daddr); 900 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n", 901 le32toh(ds->physnext), 902 le32toh(ds->pktptr), le16toh(ds->pktlen), status, 903 status & MALO_TXD_STATUS_USED ? 904 "" : (status & 3) != 0 ? " *" : " !"); 905 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n", 906 ds->datarate, ds->txpriority, le16toh(ds->qosctrl), 907 le32toh(ds->sap_pktinfo), le16toh(ds->format)); 908 #if 0 909 { 910 const uint8_t *cp = (const uint8_t *) ds; 911 int i; 912 for (i = 0; i < sizeof(struct malo_txdesc); i++) { 913 printf("%02x ", cp[i]); 914 if (((i+1) % 16) == 0) 915 printf("\n"); 916 } 917 printf("\n"); 918 } 919 #endif 920 } 921 #endif /* MALO_DEBUG */ 922 923 static __inline void 924 malo_updatetxrate(struct ieee80211_node *ni, int rix) 925 { 926 #define N(x) (sizeof(x)/sizeof(x[0])) 927 static const int ieeerates[] = 928 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 }; 929 if (rix < N(ieeerates)) 930 ni->ni_txrate = ieeerates[rix]; 931 #undef N 932 } 933 934 static int 935 malo_fix2rate(int fix_rate) 936 { 937 #define N(x) (sizeof(x)/sizeof(x[0])) 938 static const int rates[] = 939 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 }; 940 return (fix_rate < N(rates) ? rates[fix_rate] : 0); 941 #undef N 942 } 943 944 /* idiomatic shorthands: MS = mask+shift, SM = shift+mask */ 945 #define MS(v,x) (((v) & x) >> x##_S) 946 #define SM(v,x) (((v) << x##_S) & x) 947 948 /* 949 * Process completed xmit descriptors from the specified queue. 950 */ 951 static int 952 malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq) 953 { 954 struct malo_txbuf *bf; 955 struct malo_txdesc *ds; 956 struct ieee80211_node *ni; 957 int nreaped; 958 uint32_t status; 959 960 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n", 961 __func__, txq->qnum); 962 for (nreaped = 0;; nreaped++) { 963 MALO_TXQ_LOCK(txq); 964 bf = STAILQ_FIRST(&txq->active); 965 if (bf == NULL) { 966 MALO_TXQ_UNLOCK(txq); 967 break; 968 } 969 ds = bf->bf_desc; 970 MALO_TXDESC_SYNC(txq, ds, 971 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 972 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) { 973 MALO_TXQ_UNLOCK(txq); 974 break; 975 } 976 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 977 MALO_TXQ_UNLOCK(txq); 978 979 #ifdef MALO_DEBUG 980 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC) 981 malo_printtxbuf(bf, txq->qnum, nreaped); 982 #endif 983 ni = bf->bf_node; 984 if (ni != NULL) { 985 status = le32toh(ds->status); 986 if (status & MALO_TXD_STATUS_OK) { 987 uint16_t format = le16toh(ds->format); 988 uint8_t txant = MS(format, MALO_TXD_ANTENNA); 989 990 sc->malo_stats.mst_ant_tx[txant]++; 991 if (status & MALO_TXD_STATUS_OK_RETRY) 992 sc->malo_stats.mst_tx_retries++; 993 if (status & MALO_TXD_STATUS_OK_MORE_RETRY) 994 sc->malo_stats.mst_tx_mretries++; 995 malo_updatetxrate(ni, ds->datarate); 996 sc->malo_stats.mst_tx_rate = ds->datarate; 997 } else { 998 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR) 999 sc->malo_stats.mst_tx_linkerror++; 1000 if (status & MALO_TXD_STATUS_FAILED_XRETRY) 1001 sc->malo_stats.mst_tx_xretries++; 1002 if (status & MALO_TXD_STATUS_FAILED_AGING) 1003 sc->malo_stats.mst_tx_aging++; 1004 } 1005 /* 1006 * Do any tx complete callback. Note this must 1007 * be done before releasing the node reference. 1008 * XXX no way to figure out if frame was ACK'd 1009 */ 1010 if (bf->bf_m->m_flags & M_TXCB) { 1011 /* XXX strip fw len in case header inspected */ 1012 m_adj(bf->bf_m, sizeof(uint16_t)); 1013 ieee80211_process_callback(ni, bf->bf_m, 1014 (status & MALO_TXD_STATUS_OK) == 0); 1015 } 1016 /* 1017 * Reclaim reference to node. 1018 * 1019 * NB: the node may be reclaimed here if, for example 1020 * this is a DEAUTH message that was sent and the 1021 * node was timed out due to inactivity. 1022 */ 1023 ieee80211_free_node(ni); 1024 } 1025 ds->status = htole32(MALO_TXD_STATUS_IDLE); 1026 ds->pktlen = htole32(0); 1027 1028 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 1029 BUS_DMASYNC_POSTWRITE); 1030 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1031 m_freem(bf->bf_m); 1032 bf->bf_m = NULL; 1033 bf->bf_node = NULL; 1034 1035 MALO_TXQ_LOCK(txq); 1036 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1037 txq->nfree++; 1038 MALO_TXQ_UNLOCK(txq); 1039 } 1040 return nreaped; 1041 } 1042 1043 /* 1044 * Deferred processing of transmit interrupt. 1045 */ 1046 static void 1047 malo_tx_proc(void *arg, int npending) 1048 { 1049 struct malo_softc *sc = arg; 1050 struct ifnet *ifp = sc->malo_ifp; 1051 int i, nreaped; 1052 1053 /* 1054 * Process each active queue. 1055 */ 1056 nreaped = 0; 1057 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 1058 if (!STAILQ_EMPTY(&sc->malo_txq[i].active)) 1059 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]); 1060 } 1061 1062 if (nreaped != 0) { 1063 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1064 sc->malo_timer = 0; 1065 malo_start(ifp); 1066 } 1067 } 1068 1069 static int 1070 malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni, 1071 struct malo_txbuf *bf, struct mbuf *m0) 1072 { 1073 #define IEEE80211_DIR_DSTODS(wh) \ 1074 ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 1075 #define IS_DATA_FRAME(wh) \ 1076 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA) 1077 int error, ismcast, iswep; 1078 int copyhdrlen, hdrlen, pktlen; 1079 struct ieee80211_frame *wh; 1080 struct ifnet *ifp = sc->malo_ifp; 1081 struct ieee80211com *ic = ifp->if_l2com; 1082 struct ieee80211vap *vap = ni->ni_vap; 1083 struct malo_txdesc *ds; 1084 struct malo_txrec *tr; 1085 struct malo_txq *txq; 1086 uint16_t qos; 1087 1088 wh = mtod(m0, struct ieee80211_frame *); 1089 iswep = wh->i_fc[1] & IEEE80211_FC1_PROTECTED; 1090 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1091 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh); 1092 pktlen = m0->m_pkthdr.len; 1093 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1094 if (IEEE80211_DIR_DSTODS(wh)) { 1095 qos = *(uint16_t *) 1096 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos); 1097 copyhdrlen -= sizeof(qos); 1098 } else 1099 qos = *(uint16_t *) 1100 (((struct ieee80211_qosframe *) wh)->i_qos); 1101 } else 1102 qos = 0; 1103 1104 if (iswep) { 1105 struct ieee80211_key *k; 1106 1107 /* 1108 * Construct the 802.11 header+trailer for an encrypted 1109 * frame. The only reason this can fail is because of an 1110 * unknown or unsupported cipher/key type. 1111 * 1112 * NB: we do this even though the firmware will ignore 1113 * what we've done for WEP and TKIP as we need the 1114 * ExtIV filled in for CCMP and this also adjusts 1115 * the headers which simplifies our work below. 1116 */ 1117 k = ieee80211_crypto_encap(ni, m0); 1118 if (k == NULL) { 1119 /* 1120 * This can happen when the key is yanked after the 1121 * frame was queued. Just discard the frame; the 1122 * 802.11 layer counts failures and provides 1123 * debugging/diagnostics. 1124 */ 1125 m_freem(m0); 1126 return EIO; 1127 } 1128 1129 /* 1130 * Adjust the packet length for the crypto additions 1131 * done during encap and any other bits that the f/w 1132 * will add later on. 1133 */ 1134 pktlen = m0->m_pkthdr.len; 1135 1136 /* packet header may have moved, reset our local pointer */ 1137 wh = mtod(m0, struct ieee80211_frame *); 1138 } 1139 1140 if (ieee80211_radiotap_active_vap(vap)) { 1141 sc->malo_tx_th.wt_flags = 0; /* XXX */ 1142 if (iswep) 1143 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1144 sc->malo_tx_th.wt_txpower = ni->ni_txpower; 1145 sc->malo_tx_th.wt_antenna = sc->malo_txantenna; 1146 1147 ieee80211_radiotap_tx(vap, m0); 1148 } 1149 1150 /* 1151 * Copy up/down the 802.11 header; the firmware requires 1152 * we present a 2-byte payload length followed by a 1153 * 4-address header (w/o QoS), followed (optionally) by 1154 * any WEP/ExtIV header (but only filled in for CCMP). 1155 * We are assured the mbuf has sufficient headroom to 1156 * prepend in-place by the setup of ic_headroom in 1157 * malo_attach. 1158 */ 1159 if (hdrlen < sizeof(struct malo_txrec)) { 1160 const int space = sizeof(struct malo_txrec) - hdrlen; 1161 if (M_LEADINGSPACE(m0) < space) { 1162 /* NB: should never happen */ 1163 device_printf(sc->malo_dev, 1164 "not enough headroom, need %d found %zd, " 1165 "m_flags 0x%x m_len %d\n", 1166 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len); 1167 ieee80211_dump_pkt(ic, 1168 mtod(m0, const uint8_t *), m0->m_len, 0, -1); 1169 m_freem(m0); 1170 /* XXX stat */ 1171 return EIO; 1172 } 1173 M_PREPEND(m0, space, M_NOWAIT); 1174 } 1175 tr = mtod(m0, struct malo_txrec *); 1176 if (wh != (struct ieee80211_frame *) &tr->wh) 1177 ovbcopy(wh, &tr->wh, hdrlen); 1178 /* 1179 * Note: the "firmware length" is actually the length of the fully 1180 * formed "802.11 payload". That is, it's everything except for 1181 * the 802.11 header. In particular this includes all crypto 1182 * material including the MIC! 1183 */ 1184 tr->fwlen = htole16(pktlen - hdrlen); 1185 1186 /* 1187 * Load the DMA map so any coalescing is done. This 1188 * also calculates the number of descriptors we need. 1189 */ 1190 error = malo_tx_dmasetup(sc, bf, m0); 1191 if (error != 0) 1192 return error; 1193 bf->bf_node = ni; /* NB: held reference */ 1194 m0 = bf->bf_m; /* NB: may have changed */ 1195 tr = mtod(m0, struct malo_txrec *); 1196 wh = (struct ieee80211_frame *)&tr->wh; 1197 1198 /* 1199 * Formulate tx descriptor. 1200 */ 1201 ds = bf->bf_desc; 1202 txq = bf->bf_txq; 1203 1204 ds->qosctrl = qos; /* NB: already little-endian */ 1205 ds->pktptr = htole32(bf->bf_segs[0].ds_addr); 1206 ds->pktlen = htole16(bf->bf_segs[0].ds_len); 1207 /* NB: pPhysNext setup once, don't touch */ 1208 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0; 1209 ds->sap_pktinfo = 0; 1210 ds->format = 0; 1211 1212 /* 1213 * Select transmit rate. 1214 */ 1215 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 1216 case IEEE80211_FC0_TYPE_MGT: 1217 sc->malo_stats.mst_tx_mgmt++; 1218 /* fall thru... */ 1219 case IEEE80211_FC0_TYPE_CTL: 1220 ds->txpriority = 1; 1221 break; 1222 case IEEE80211_FC0_TYPE_DATA: 1223 ds->txpriority = txq->qnum; 1224 break; 1225 default: 1226 if_printf(ifp, "bogus frame type 0x%x (%s)\n", 1227 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__); 1228 /* XXX statistic */ 1229 m_freem(m0); 1230 return EIO; 1231 } 1232 1233 #ifdef MALO_DEBUG 1234 if (IFF_DUMPPKTS_XMIT(sc)) 1235 ieee80211_dump_pkt(ic, 1236 mtod(m0, const uint8_t *)+sizeof(uint16_t), 1237 m0->m_len - sizeof(uint16_t), ds->datarate, -1); 1238 #endif 1239 1240 MALO_TXQ_LOCK(txq); 1241 if (!IS_DATA_FRAME(wh)) 1242 ds->status |= htole32(1); 1243 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED); 1244 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list); 1245 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1246 1247 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1248 sc->malo_timer = 5; 1249 MALO_TXQ_UNLOCK(txq); 1250 return 0; 1251 #undef IEEE80211_DIR_DSTODS 1252 } 1253 1254 static void 1255 malo_start(struct ifnet *ifp) 1256 { 1257 struct malo_softc *sc = ifp->if_softc; 1258 struct ieee80211_node *ni; 1259 struct malo_txq *txq = &sc->malo_txq[0]; 1260 struct malo_txbuf *bf = NULL; 1261 struct mbuf *m; 1262 int nqueued = 0; 1263 1264 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) 1265 return; 1266 1267 for (;;) { 1268 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1269 if (m == NULL) 1270 break; 1271 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1272 bf = malo_getbuf(sc, txq); 1273 if (bf == NULL) { 1274 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1275 1276 /* XXX blocks other traffic */ 1277 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1278 sc->malo_stats.mst_tx_qstop++; 1279 break; 1280 } 1281 /* 1282 * Pass the frame to the h/w for transmission. 1283 */ 1284 if (malo_tx_start(sc, ni, bf, m)) { 1285 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1286 if (bf != NULL) { 1287 bf->bf_m = NULL; 1288 bf->bf_node = NULL; 1289 MALO_TXQ_LOCK(txq); 1290 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1291 MALO_TXQ_UNLOCK(txq); 1292 } 1293 ieee80211_free_node(ni); 1294 continue; 1295 } 1296 nqueued++; 1297 1298 if (nqueued >= malo_txcoalesce) { 1299 /* 1300 * Poke the firmware to process queued frames; 1301 * see below about (lack of) locking. 1302 */ 1303 nqueued = 0; 1304 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1305 } 1306 } 1307 1308 if (nqueued) { 1309 /* 1310 * NB: We don't need to lock against tx done because 1311 * this just prods the firmware to check the transmit 1312 * descriptors. The firmware will also start fetching 1313 * descriptors by itself if it notices new ones are 1314 * present when it goes to deliver a tx done interrupt 1315 * to the host. So if we race with tx done processing 1316 * it's ok. Delivering the kick here rather than in 1317 * malo_tx_start is an optimization to avoid poking the 1318 * firmware for each packet. 1319 * 1320 * NB: the queue id isn't used so 0 is ok. 1321 */ 1322 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1323 } 1324 } 1325 1326 static void 1327 malo_watchdog(void *arg) 1328 { 1329 struct malo_softc *sc; 1330 struct ifnet *ifp; 1331 1332 sc = arg; 1333 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1334 if (sc->malo_timer == 0 || --sc->malo_timer > 0) 1335 return; 1336 1337 ifp = sc->malo_ifp; 1338 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->malo_invalid) { 1339 if_printf(ifp, "watchdog timeout\n"); 1340 1341 /* XXX no way to reset h/w. now */ 1342 1343 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1344 sc->malo_stats.mst_watchdog++; 1345 } 1346 } 1347 1348 static int 1349 malo_hal_reset(struct malo_softc *sc) 1350 { 1351 static int first = 0; 1352 struct ifnet *ifp = sc->malo_ifp; 1353 struct ieee80211com *ic = ifp->if_l2com; 1354 struct malo_hal *mh = sc->malo_mh; 1355 1356 if (first == 0) { 1357 /* 1358 * NB: when the device firstly is initialized, sometimes 1359 * firmware could override rx/tx dma registers so we re-set 1360 * these values once. 1361 */ 1362 malo_hal_set_rxtxdma(sc); 1363 first = 1; 1364 } 1365 1366 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna); 1367 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna); 1368 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE); 1369 malo_chan_set(sc, ic->ic_curchan); 1370 1371 /* XXX needs other stuffs? */ 1372 1373 return 1; 1374 } 1375 1376 static __inline struct mbuf * 1377 malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf) 1378 { 1379 struct mbuf *m; 1380 bus_addr_t paddr; 1381 int error; 1382 1383 /* XXX don't need mbuf, just dma buffer */ 1384 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1385 if (m == NULL) { 1386 sc->malo_stats.mst_rx_nombuf++; /* XXX */ 1387 return NULL; 1388 } 1389 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap, 1390 mtod(m, caddr_t), MJUMPAGESIZE, 1391 malo_load_cb, &paddr, BUS_DMA_NOWAIT); 1392 if (error != 0) { 1393 if_printf(sc->malo_ifp, 1394 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1395 m_freem(m); 1396 return NULL; 1397 } 1398 bf->bf_data = paddr; 1399 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 1400 1401 return m; 1402 } 1403 1404 static int 1405 malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf) 1406 { 1407 struct malo_rxdesc *ds; 1408 1409 ds = bf->bf_desc; 1410 if (bf->bf_m == NULL) { 1411 bf->bf_m = malo_getrxmbuf(sc, bf); 1412 if (bf->bf_m == NULL) { 1413 /* mark descriptor to be skipped */ 1414 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN; 1415 /* NB: don't need PREREAD */ 1416 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE); 1417 return ENOMEM; 1418 } 1419 } 1420 1421 /* 1422 * Setup descriptor. 1423 */ 1424 ds->qosctrl = 0; 1425 ds->snr = 0; 1426 ds->status = MALO_RXD_STATUS_IDLE; 1427 ds->channel = 0; 1428 ds->pktlen = htole16(MALO_RXSIZE); 1429 ds->nf = 0; 1430 ds->physbuffdata = htole32(bf->bf_data); 1431 /* NB: don't touch pPhysNext, set once */ 1432 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN; 1433 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1434 1435 return 0; 1436 } 1437 1438 /* 1439 * Setup the rx data structures. This should only be done once or we may get 1440 * out of sync with the firmware. 1441 */ 1442 static int 1443 malo_startrecv(struct malo_softc *sc) 1444 { 1445 struct malo_rxbuf *bf, *prev; 1446 struct malo_rxdesc *ds; 1447 1448 if (sc->malo_recvsetup == 1) { 1449 malo_mode_init(sc); /* set filters, etc. */ 1450 return 0; 1451 } 1452 1453 prev = NULL; 1454 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 1455 int error = malo_rxbuf_init(sc, bf); 1456 if (error != 0) { 1457 DPRINTF(sc, MALO_DEBUG_RECV, 1458 "%s: malo_rxbuf_init failed %d\n", 1459 __func__, error); 1460 return error; 1461 } 1462 if (prev != NULL) { 1463 ds = prev->bf_desc; 1464 ds->physnext = htole32(bf->bf_daddr); 1465 } 1466 prev = bf; 1467 } 1468 if (prev != NULL) { 1469 ds = prev->bf_desc; 1470 ds->physnext = 1471 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr); 1472 } 1473 1474 sc->malo_recvsetup = 1; 1475 1476 malo_mode_init(sc); /* set filters, etc. */ 1477 1478 return 0; 1479 } 1480 1481 static void 1482 malo_init_locked(struct malo_softc *sc) 1483 { 1484 struct ifnet *ifp = sc->malo_ifp; 1485 struct malo_hal *mh = sc->malo_mh; 1486 int error; 1487 1488 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1489 __func__, ifp->if_flags); 1490 1491 MALO_LOCK_ASSERT(sc); 1492 1493 /* 1494 * Stop anything previously setup. This is safe whether this is 1495 * the first time through or not. 1496 */ 1497 malo_stop_locked(ifp, 0); 1498 1499 /* 1500 * Push state to the firmware. 1501 */ 1502 if (!malo_hal_reset(sc)) { 1503 if_printf(ifp, "%s: unable to reset hardware\n", __func__); 1504 return; 1505 } 1506 1507 /* 1508 * Setup recv (once); transmit is already good to go. 1509 */ 1510 error = malo_startrecv(sc); 1511 if (error != 0) { 1512 if_printf(ifp, "%s: unable to start recv logic, error %d\n", 1513 __func__, error); 1514 return; 1515 } 1516 1517 /* 1518 * Enable interrupts. 1519 */ 1520 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY 1521 | MALO_A2HRIC_BIT_TX_DONE 1522 | MALO_A2HRIC_BIT_OPC_DONE 1523 | MALO_A2HRIC_BIT_MAC_EVENT 1524 | MALO_A2HRIC_BIT_RX_PROBLEM 1525 | MALO_A2HRIC_BIT_ICV_ERROR 1526 | MALO_A2HRIC_BIT_RADAR_DETECT 1527 | MALO_A2HRIC_BIT_CHAN_SWITCH; 1528 1529 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1530 malo_hal_intrset(mh, sc->malo_imask); 1531 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1532 } 1533 1534 static void 1535 malo_init(void *arg) 1536 { 1537 struct malo_softc *sc = (struct malo_softc *) arg; 1538 struct ifnet *ifp = sc->malo_ifp; 1539 struct ieee80211com *ic = ifp->if_l2com; 1540 1541 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1542 __func__, ifp->if_flags); 1543 1544 MALO_LOCK(sc); 1545 malo_init_locked(sc); 1546 1547 MALO_UNLOCK(sc); 1548 1549 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1550 ieee80211_start_all(ic); /* start all vap's */ 1551 } 1552 1553 /* 1554 * Set the multicast filter contents into the hardware. 1555 */ 1556 static void 1557 malo_setmcastfilter(struct malo_softc *sc) 1558 { 1559 struct ifnet *ifp = sc->malo_ifp; 1560 struct ieee80211com *ic = ifp->if_l2com; 1561 struct ifmultiaddr *ifma; 1562 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX]; 1563 uint8_t *mp; 1564 int nmc; 1565 1566 mp = macs; 1567 nmc = 0; 1568 1569 if (ic->ic_opmode == IEEE80211_M_MONITOR || 1570 (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC))) 1571 goto all; 1572 1573 if_maddr_rlock(ifp); 1574 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1575 if (ifma->ifma_addr->sa_family != AF_LINK) 1576 continue; 1577 1578 if (nmc == MALO_HAL_MCAST_MAX) { 1579 ifp->if_flags |= IFF_ALLMULTI; 1580 if_maddr_runlock(ifp); 1581 goto all; 1582 } 1583 IEEE80211_ADDR_COPY(mp, 1584 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1585 1586 mp += IEEE80211_ADDR_LEN, nmc++; 1587 } 1588 if_maddr_runlock(ifp); 1589 1590 malo_hal_setmcast(sc->malo_mh, nmc, macs); 1591 1592 all: 1593 /* 1594 * XXX we don't know how to set the f/w for supporting 1595 * IFF_ALLMULTI | IFF_PROMISC cases 1596 */ 1597 return; 1598 } 1599 1600 static int 1601 malo_mode_init(struct malo_softc *sc) 1602 { 1603 struct ifnet *ifp = sc->malo_ifp; 1604 struct ieee80211com *ic = ifp->if_l2com; 1605 struct malo_hal *mh = sc->malo_mh; 1606 1607 /* 1608 * NB: Ignore promisc in hostap mode; it's set by the 1609 * bridge. This is wrong but we have no way to 1610 * identify internal requests (from the bridge) 1611 * versus external requests such as for tcpdump. 1612 */ 1613 malo_hal_setpromisc(mh, (ifp->if_flags & IFF_PROMISC) && 1614 ic->ic_opmode != IEEE80211_M_HOSTAP); 1615 malo_setmcastfilter(sc); 1616 1617 return ENXIO; 1618 } 1619 1620 static void 1621 malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq) 1622 { 1623 struct ieee80211_node *ni; 1624 struct malo_txbuf *bf; 1625 u_int ix; 1626 1627 /* 1628 * NB: this assumes output has been stopped and 1629 * we do not need to block malo_tx_tasklet 1630 */ 1631 for (ix = 0;; ix++) { 1632 MALO_TXQ_LOCK(txq); 1633 bf = STAILQ_FIRST(&txq->active); 1634 if (bf == NULL) { 1635 MALO_TXQ_UNLOCK(txq); 1636 break; 1637 } 1638 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 1639 MALO_TXQ_UNLOCK(txq); 1640 #ifdef MALO_DEBUG 1641 if (sc->malo_debug & MALO_DEBUG_RESET) { 1642 struct ifnet *ifp = sc->malo_ifp; 1643 struct ieee80211com *ic = ifp->if_l2com; 1644 const struct malo_txrec *tr = 1645 mtod(bf->bf_m, const struct malo_txrec *); 1646 malo_printtxbuf(bf, txq->qnum, ix); 1647 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh, 1648 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1); 1649 } 1650 #endif /* MALO_DEBUG */ 1651 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1652 ni = bf->bf_node; 1653 bf->bf_node = NULL; 1654 if (ni != NULL) { 1655 /* 1656 * Reclaim node reference. 1657 */ 1658 ieee80211_free_node(ni); 1659 } 1660 m_freem(bf->bf_m); 1661 bf->bf_m = NULL; 1662 1663 MALO_TXQ_LOCK(txq); 1664 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1665 txq->nfree++; 1666 MALO_TXQ_UNLOCK(txq); 1667 } 1668 } 1669 1670 static void 1671 malo_stop_locked(struct ifnet *ifp, int disable) 1672 { 1673 struct malo_softc *sc = ifp->if_softc; 1674 struct malo_hal *mh = sc->malo_mh; 1675 int i; 1676 1677 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u if_flags 0x%x\n", 1678 __func__, sc->malo_invalid, ifp->if_flags); 1679 1680 MALO_LOCK_ASSERT(sc); 1681 1682 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1683 return; 1684 1685 /* 1686 * Shutdown the hardware and driver: 1687 * disable interrupts 1688 * turn off the radio 1689 * drain and release tx queues 1690 * 1691 * Note that some of this work is not possible if the hardware 1692 * is gone (invalid). 1693 */ 1694 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1695 callout_stop(&sc->malo_watchdog_timer); 1696 sc->malo_timer = 0; 1697 /* diable interrupt. */ 1698 malo_hal_intrset(mh, 0); 1699 /* turn off the radio. */ 1700 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE); 1701 1702 /* drain and release tx queues. */ 1703 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 1704 malo_tx_draintxq(sc, &sc->malo_txq[i]); 1705 } 1706 1707 static int 1708 malo_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1709 { 1710 #define MALO_IS_RUNNING(ifp) \ 1711 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1712 struct malo_softc *sc = ifp->if_softc; 1713 struct ieee80211com *ic = ifp->if_l2com; 1714 struct ifreq *ifr = (struct ifreq *) data; 1715 int error = 0, startall = 0; 1716 1717 MALO_LOCK(sc); 1718 switch (cmd) { 1719 case SIOCSIFFLAGS: 1720 if (MALO_IS_RUNNING(ifp)) { 1721 /* 1722 * To avoid rescanning another access point, 1723 * do not call malo_init() here. Instead, 1724 * only reflect promisc mode settings. 1725 */ 1726 malo_mode_init(sc); 1727 } else if (ifp->if_flags & IFF_UP) { 1728 /* 1729 * Beware of being called during attach/detach 1730 * to reset promiscuous mode. In that case we 1731 * will still be marked UP but not RUNNING. 1732 * However trying to re-init the interface 1733 * is the wrong thing to do as we've already 1734 * torn down much of our state. There's 1735 * probably a better way to deal with this. 1736 */ 1737 if (!sc->malo_invalid) { 1738 malo_init_locked(sc); 1739 startall = 1; 1740 } 1741 } else 1742 malo_stop_locked(ifp, 1); 1743 break; 1744 case SIOCGIFMEDIA: 1745 case SIOCSIFMEDIA: 1746 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1747 break; 1748 default: 1749 error = ether_ioctl(ifp, cmd, data); 1750 break; 1751 } 1752 MALO_UNLOCK(sc); 1753 1754 if (startall) 1755 ieee80211_start_all(ic); 1756 return error; 1757 #undef MALO_IS_RUNNING 1758 } 1759 1760 /* 1761 * Callback from the 802.11 layer to update the slot time 1762 * based on the current setting. We use it to notify the 1763 * firmware of ERP changes and the f/w takes care of things 1764 * like slot time and preamble. 1765 */ 1766 static void 1767 malo_updateslot(struct ifnet *ifp) 1768 { 1769 struct malo_softc *sc = ifp->if_softc; 1770 struct ieee80211com *ic = ifp->if_l2com; 1771 struct malo_hal *mh = sc->malo_mh; 1772 int error; 1773 1774 /* NB: can be called early; suppress needless cmds */ 1775 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1776 return; 1777 1778 DPRINTF(sc, MALO_DEBUG_RESET, 1779 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n", 1780 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags, 1781 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags); 1782 1783 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1784 error = malo_hal_set_slot(mh, 1); 1785 else 1786 error = malo_hal_set_slot(mh, 0); 1787 1788 if (error != 0) 1789 device_printf(sc->malo_dev, "setting %s slot failed\n", 1790 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long"); 1791 } 1792 1793 static int 1794 malo_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1795 { 1796 struct ieee80211com *ic = vap->iv_ic; 1797 struct malo_softc *sc = ic->ic_ifp->if_softc; 1798 struct malo_hal *mh = sc->malo_mh; 1799 int error; 1800 1801 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1802 ieee80211_state_name[vap->iv_state], 1803 ieee80211_state_name[nstate]); 1804 1805 /* 1806 * Invoke the net80211 layer first so iv_bss is setup. 1807 */ 1808 error = MALO_VAP(vap)->malo_newstate(vap, nstate, arg); 1809 if (error != 0) 1810 return error; 1811 1812 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1813 struct ieee80211_node *ni = vap->iv_bss; 1814 enum ieee80211_phymode mode = ieee80211_chan2mode(ni->ni_chan); 1815 const struct ieee80211_txparam *tp = &vap->iv_txparms[mode]; 1816 1817 DPRINTF(sc, MALO_DEBUG_STATE, 1818 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s " 1819 "capinfo 0x%04x chan %d associd 0x%x mode %d rate %d\n", 1820 vap->iv_ifp->if_xname, __func__, vap->iv_flags, 1821 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo, 1822 ieee80211_chan2ieee(ic, ic->ic_curchan), 1823 ni->ni_associd, mode, tp->ucastrate); 1824 1825 malo_hal_setradio(mh, 1, 1826 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? 1827 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE); 1828 malo_hal_setassocid(sc->malo_mh, ni->ni_bssid, ni->ni_associd); 1829 malo_hal_set_rate(mh, mode, 1830 tp->ucastrate == IEEE80211_FIXED_RATE_NONE ? 1831 0 : malo_fix2rate(tp->ucastrate)); 1832 } 1833 return 0; 1834 } 1835 1836 static int 1837 malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1838 const struct ieee80211_bpf_params *params) 1839 { 1840 struct ieee80211com *ic = ni->ni_ic; 1841 struct ifnet *ifp = ic->ic_ifp; 1842 struct malo_softc *sc = ifp->if_softc; 1843 struct malo_txbuf *bf; 1844 struct malo_txq *txq; 1845 1846 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) { 1847 ieee80211_free_node(ni); 1848 m_freem(m); 1849 return ENETDOWN; 1850 } 1851 1852 /* 1853 * Grab a TX buffer and associated resources. Note that we depend 1854 * on the classification by the 802.11 layer to get to the right h/w 1855 * queue. Management frames must ALWAYS go on queue 1 but we 1856 * cannot just force that here because we may receive non-mgt frames. 1857 */ 1858 txq = &sc->malo_txq[0]; 1859 bf = malo_getbuf(sc, txq); 1860 if (bf == NULL) { 1861 /* XXX blocks other traffic */ 1862 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1863 ieee80211_free_node(ni); 1864 m_freem(m); 1865 return ENOBUFS; 1866 } 1867 1868 /* 1869 * Pass the frame to the h/w for transmission. 1870 */ 1871 if (malo_tx_start(sc, ni, bf, m) != 0) { 1872 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1873 bf->bf_m = NULL; 1874 bf->bf_node = NULL; 1875 MALO_TXQ_LOCK(txq); 1876 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1877 txq->nfree++; 1878 MALO_TXQ_UNLOCK(txq); 1879 1880 ieee80211_free_node(ni); 1881 return EIO; /* XXX */ 1882 } 1883 1884 /* 1885 * NB: We don't need to lock against tx done because this just 1886 * prods the firmware to check the transmit descriptors. The firmware 1887 * will also start fetching descriptors by itself if it notices 1888 * new ones are present when it goes to deliver a tx done interrupt 1889 * to the host. So if we race with tx done processing it's ok. 1890 * Delivering the kick here rather than in malo_tx_start is 1891 * an optimization to avoid poking the firmware for each packet. 1892 * 1893 * NB: the queue id isn't used so 0 is ok. 1894 */ 1895 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1896 1897 return 0; 1898 } 1899 1900 static void 1901 malo_sysctlattach(struct malo_softc *sc) 1902 { 1903 #ifdef MALO_DEBUG 1904 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev); 1905 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev); 1906 1907 sc->malo_debug = malo_debug; 1908 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 1909 "debug", CTLFLAG_RW, &sc->malo_debug, 0, 1910 "control debugging printfs"); 1911 #endif 1912 } 1913 1914 static void 1915 malo_announce(struct malo_softc *sc) 1916 { 1917 struct ifnet *ifp = sc->malo_ifp; 1918 1919 if_printf(ifp, "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n", 1920 sc->malo_hwspecs.hwversion, 1921 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff, 1922 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff, 1923 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff, 1924 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff, 1925 sc->malo_hwspecs.regioncode); 1926 1927 if (bootverbose || malo_rxbuf != MALO_RXBUF) 1928 if_printf(ifp, "using %u rx buffers\n", malo_rxbuf); 1929 if (bootverbose || malo_txbuf != MALO_TXBUF) 1930 if_printf(ifp, "using %u tx buffers\n", malo_txbuf); 1931 } 1932 1933 /* 1934 * Convert net80211 channel to a HAL channel. 1935 */ 1936 static void 1937 malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan) 1938 { 1939 hc->channel = chan->ic_ieee; 1940 1941 *(uint32_t *)&hc->flags = 0; 1942 if (IEEE80211_IS_CHAN_2GHZ(chan)) 1943 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ; 1944 } 1945 1946 /* 1947 * Set/change channels. If the channel is really being changed, 1948 * it's done by reseting the chip. To accomplish this we must 1949 * first cleanup any pending DMA, then restart stuff after a la 1950 * malo_init. 1951 */ 1952 static int 1953 malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan) 1954 { 1955 struct malo_hal *mh = sc->malo_mh; 1956 struct malo_hal_channel hchan; 1957 1958 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n", 1959 __func__, chan->ic_freq, chan->ic_flags); 1960 1961 /* 1962 * Convert to a HAL channel description with the flags constrained 1963 * to reflect the current operating mode. 1964 */ 1965 malo_mapchan(&hchan, chan); 1966 malo_hal_intrset(mh, 0); /* disable interrupts */ 1967 malo_hal_setchannel(mh, &hchan); 1968 malo_hal_settxpower(mh, &hchan); 1969 1970 /* 1971 * Update internal state. 1972 */ 1973 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq); 1974 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq); 1975 if (IEEE80211_IS_CHAN_ANYG(chan)) { 1976 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G); 1977 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G); 1978 } else { 1979 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B); 1980 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B); 1981 } 1982 sc->malo_curchan = hchan; 1983 malo_hal_intrset(mh, sc->malo_imask); 1984 1985 return 0; 1986 } 1987 1988 static void 1989 malo_scan_start(struct ieee80211com *ic) 1990 { 1991 struct ifnet *ifp = ic->ic_ifp; 1992 struct malo_softc *sc = ifp->if_softc; 1993 1994 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 1995 } 1996 1997 static void 1998 malo_scan_end(struct ieee80211com *ic) 1999 { 2000 struct ifnet *ifp = ic->ic_ifp; 2001 struct malo_softc *sc = ifp->if_softc; 2002 2003 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2004 } 2005 2006 static void 2007 malo_set_channel(struct ieee80211com *ic) 2008 { 2009 struct ifnet *ifp = ic->ic_ifp; 2010 struct malo_softc *sc = ifp->if_softc; 2011 2012 (void) malo_chan_set(sc, ic->ic_curchan); 2013 } 2014 2015 static void 2016 malo_rx_proc(void *arg, int npending) 2017 { 2018 #define IEEE80211_DIR_DSTODS(wh) \ 2019 ((((const struct ieee80211_frame *)wh)->i_fc[1] & \ 2020 IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 2021 struct malo_softc *sc = arg; 2022 struct ifnet *ifp = sc->malo_ifp; 2023 struct ieee80211com *ic = ifp->if_l2com; 2024 struct malo_rxbuf *bf; 2025 struct malo_rxdesc *ds; 2026 struct mbuf *m, *mnew; 2027 struct ieee80211_qosframe *wh; 2028 struct ieee80211_qosframe_addr4 *wh4; 2029 struct ieee80211_node *ni; 2030 int off, len, hdrlen, pktlen, rssi, ntodo; 2031 uint8_t *data, status; 2032 uint32_t readptr, writeptr; 2033 2034 DPRINTF(sc, MALO_DEBUG_RX_PROC, 2035 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n", 2036 __func__, npending, 2037 sc->malo_hwspecs.rxdesc_read, 2038 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read), 2039 sc->malo_hwspecs.rxdesc_write, 2040 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write)); 2041 2042 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read); 2043 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write); 2044 if (readptr == writeptr) 2045 return; 2046 2047 bf = sc->malo_rxnext; 2048 for (ntodo = malo_rxquota; ntodo > 0 && readptr != writeptr; ntodo--) { 2049 if (bf == NULL) { 2050 bf = STAILQ_FIRST(&sc->malo_rxbuf); 2051 break; 2052 } 2053 ds = bf->bf_desc; 2054 if (bf->bf_m == NULL) { 2055 /* 2056 * If data allocation failed previously there 2057 * will be no buffer; try again to re-populate it. 2058 * Note the firmware will not advance to the next 2059 * descriptor with a dma buffer so we must mimic 2060 * this or we'll get out of sync. 2061 */ 2062 DPRINTF(sc, MALO_DEBUG_ANY, 2063 "%s: rx buf w/o dma memory\n", __func__); 2064 (void)malo_rxbuf_init(sc, bf); 2065 break; 2066 } 2067 MALO_RXDESC_SYNC(sc, ds, 2068 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2069 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN) 2070 break; 2071 2072 readptr = le32toh(ds->physnext); 2073 2074 #ifdef MALO_DEBUG 2075 if (sc->malo_debug & MALO_DEBUG_RECV_DESC) 2076 malo_printrxbuf(bf, 0); 2077 #endif 2078 status = ds->status; 2079 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) { 2080 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2081 goto rx_next; 2082 } 2083 /* 2084 * Sync the data buffer. 2085 */ 2086 len = le16toh(ds->pktlen); 2087 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 2088 BUS_DMASYNC_POSTREAD); 2089 /* 2090 * The 802.11 header is provided all or in part at the front; 2091 * use it to calculate the true size of the header that we'll 2092 * construct below. We use this to figure out where to copy 2093 * payload prior to constructing the header. 2094 */ 2095 m = bf->bf_m; 2096 data = mtod(m, uint8_t *); 2097 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t)); 2098 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4); 2099 2100 /* 2101 * Calculate RSSI. XXX wrong 2102 */ 2103 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */ 2104 if (rssi > 100) 2105 rssi = 100; 2106 2107 pktlen = hdrlen + (len - off); 2108 /* 2109 * NB: we know our frame is at least as large as 2110 * IEEE80211_MIN_LEN because there is a 4-address frame at 2111 * the front. Hence there's no need to vet the packet length. 2112 * If the frame in fact is too small it should be discarded 2113 * at the net80211 layer. 2114 */ 2115 2116 /* XXX don't need mbuf, just dma buffer */ 2117 mnew = malo_getrxmbuf(sc, bf); 2118 if (mnew == NULL) { 2119 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2120 goto rx_next; 2121 } 2122 /* 2123 * Attach the dma buffer to the mbuf; malo_rxbuf_init will 2124 * re-setup the rx descriptor using the replacement dma 2125 * buffer we just installed above. 2126 */ 2127 bf->bf_m = mnew; 2128 m->m_data += off - hdrlen; 2129 m->m_pkthdr.len = m->m_len = pktlen; 2130 m->m_pkthdr.rcvif = ifp; 2131 2132 /* 2133 * Piece 802.11 header together. 2134 */ 2135 wh = mtod(m, struct ieee80211_qosframe *); 2136 /* NB: don't need to do this sometimes but ... */ 2137 /* XXX special case so we can memcpy after m_devget? */ 2138 ovbcopy(data + sizeof(uint16_t), wh, hdrlen); 2139 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2140 if (IEEE80211_DIR_DSTODS(wh)) { 2141 wh4 = mtod(m, 2142 struct ieee80211_qosframe_addr4*); 2143 *(uint16_t *)wh4->i_qos = ds->qosctrl; 2144 } else { 2145 *(uint16_t *)wh->i_qos = ds->qosctrl; 2146 } 2147 } 2148 if (ieee80211_radiotap_active(ic)) { 2149 sc->malo_rx_th.wr_flags = 0; 2150 sc->malo_rx_th.wr_rate = ds->rate; 2151 sc->malo_rx_th.wr_antsignal = rssi; 2152 sc->malo_rx_th.wr_antnoise = ds->nf; 2153 } 2154 #ifdef MALO_DEBUG 2155 if (IFF_DUMPPKTS_RECV(sc, wh)) { 2156 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 2157 len, ds->rate, rssi); 2158 } 2159 #endif 2160 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 2161 2162 /* dispatch */ 2163 ni = ieee80211_find_rxnode(ic, 2164 (struct ieee80211_frame_min *)wh); 2165 if (ni != NULL) { 2166 (void) ieee80211_input(ni, m, rssi, ds->nf); 2167 ieee80211_free_node(ni); 2168 } else 2169 (void) ieee80211_input_all(ic, m, rssi, ds->nf); 2170 rx_next: 2171 /* NB: ignore ENOMEM so we process more descriptors */ 2172 (void) malo_rxbuf_init(sc, bf); 2173 bf = STAILQ_NEXT(bf, bf_list); 2174 } 2175 2176 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr); 2177 sc->malo_rxnext = bf; 2178 2179 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 && 2180 !IFQ_IS_EMPTY(&ifp->if_snd)) 2181 malo_start(ifp); 2182 #undef IEEE80211_DIR_DSTODS 2183 } 2184 2185 static void 2186 malo_stop(struct ifnet *ifp, int disable) 2187 { 2188 struct malo_softc *sc = ifp->if_softc; 2189 2190 MALO_LOCK(sc); 2191 malo_stop_locked(ifp, disable); 2192 MALO_UNLOCK(sc); 2193 } 2194 2195 /* 2196 * Reclaim all tx queue resources. 2197 */ 2198 static void 2199 malo_tx_cleanup(struct malo_softc *sc) 2200 { 2201 int i; 2202 2203 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 2204 malo_tx_cleanupq(sc, &sc->malo_txq[i]); 2205 } 2206 2207 int 2208 malo_detach(struct malo_softc *sc) 2209 { 2210 struct ifnet *ifp = sc->malo_ifp; 2211 struct ieee80211com *ic = ifp->if_l2com; 2212 2213 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2214 __func__, ifp->if_flags); 2215 2216 malo_stop(ifp, 1); 2217 2218 if (sc->malo_tq != NULL) { 2219 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask); 2220 taskqueue_drain(sc->malo_tq, &sc->malo_txtask); 2221 taskqueue_free(sc->malo_tq); 2222 sc->malo_tq = NULL; 2223 } 2224 2225 /* 2226 * NB: the order of these is important: 2227 * o call the 802.11 layer before detaching the hal to 2228 * insure callbacks into the driver to delete global 2229 * key cache entries can be handled 2230 * o reclaim the tx queue data structures after calling 2231 * the 802.11 layer as we'll get called back to reclaim 2232 * node state and potentially want to use them 2233 * o to cleanup the tx queues the hal is called, so detach 2234 * it last 2235 * Other than that, it's straightforward... 2236 */ 2237 ieee80211_ifdetach(ic); 2238 callout_drain(&sc->malo_watchdog_timer); 2239 malo_dma_cleanup(sc); 2240 malo_tx_cleanup(sc); 2241 malo_hal_detach(sc->malo_mh); 2242 if_free(ifp); 2243 2244 MALO_LOCK_DESTROY(sc); 2245 2246 return 0; 2247 } 2248 2249 void 2250 malo_shutdown(struct malo_softc *sc) 2251 { 2252 malo_stop(sc->malo_ifp, 1); 2253 } 2254 2255 void 2256 malo_suspend(struct malo_softc *sc) 2257 { 2258 struct ifnet *ifp = sc->malo_ifp; 2259 2260 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2261 __func__, ifp->if_flags); 2262 2263 malo_stop(ifp, 1); 2264 } 2265 2266 void 2267 malo_resume(struct malo_softc *sc) 2268 { 2269 struct ifnet *ifp = sc->malo_ifp; 2270 2271 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2272 __func__, ifp->if_flags); 2273 2274 if (ifp->if_flags & IFF_UP) 2275 malo_init(sc); 2276 } 2277