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__, (intmax_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, "%s: %s DMA map: %p (%lu) -> %p (%lu)\n", 514 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len, 515 (caddr_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len); 516 517 return 0; 518 fail2: 519 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 520 fail1: 521 bus_dma_tag_destroy(dd->dd_dmat); 522 memset(dd, 0, sizeof(*dd)); 523 return error; 524 } 525 526 #define DS2PHYS(_dd, _ds) \ 527 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 528 529 static int 530 malo_rxdma_setup(struct malo_softc *sc) 531 { 532 struct ifnet *ifp = sc->malo_ifp; 533 int error, bsize, i; 534 struct malo_rxbuf *bf; 535 struct malo_rxdesc *ds; 536 537 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma, 538 malo_rxbuf, sizeof(struct malo_rxbuf), 539 1, sizeof(struct malo_rxdesc)); 540 if (error != 0) 541 return error; 542 543 /* 544 * Allocate rx buffers and set them up. 545 */ 546 bsize = malo_rxbuf * sizeof(struct malo_rxbuf); 547 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 548 if (bf == NULL) { 549 if_printf(ifp, "malloc of %u rx buffers failed\n", bsize); 550 return error; 551 } 552 sc->malo_rxdma.dd_bufptr = bf; 553 554 STAILQ_INIT(&sc->malo_rxbuf); 555 ds = sc->malo_rxdma.dd_desc; 556 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) { 557 bf->bf_desc = ds; 558 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds); 559 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 560 &bf->bf_dmamap); 561 if (error != 0) { 562 if_printf(ifp, "%s: unable to dmamap for rx buffer, " 563 "error %d\n", __func__, error); 564 return error; 565 } 566 /* NB: tail is intentional to preserve descriptor order */ 567 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list); 568 } 569 return 0; 570 } 571 572 static int 573 malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq) 574 { 575 struct ifnet *ifp = sc->malo_ifp; 576 int error, bsize, i; 577 struct malo_txbuf *bf; 578 struct malo_txdesc *ds; 579 580 error = malo_desc_setup(sc, "tx", &txq->dma, 581 malo_txbuf, sizeof(struct malo_txbuf), 582 MALO_TXDESC, sizeof(struct malo_txdesc)); 583 if (error != 0) 584 return error; 585 586 /* allocate and setup tx buffers */ 587 bsize = malo_txbuf * sizeof(struct malo_txbuf); 588 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 589 if (bf == NULL) { 590 if_printf(ifp, "malloc of %u tx buffers failed\n", 591 malo_txbuf); 592 return ENOMEM; 593 } 594 txq->dma.dd_bufptr = bf; 595 596 STAILQ_INIT(&txq->free); 597 txq->nfree = 0; 598 ds = txq->dma.dd_desc; 599 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) { 600 bf->bf_desc = ds; 601 bf->bf_daddr = DS2PHYS(&txq->dma, ds); 602 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 603 &bf->bf_dmamap); 604 if (error != 0) { 605 if_printf(ifp, "unable to create dmamap for tx " 606 "buffer %u, error %u\n", i, error); 607 return error; 608 } 609 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 610 txq->nfree++; 611 } 612 613 return 0; 614 } 615 616 static void 617 malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd) 618 { 619 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap); 620 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 621 bus_dma_tag_destroy(dd->dd_dmat); 622 623 memset(dd, 0, sizeof(*dd)); 624 } 625 626 static void 627 malo_rxdma_cleanup(struct malo_softc *sc) 628 { 629 struct malo_rxbuf *bf; 630 631 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 632 if (bf->bf_m != NULL) { 633 m_freem(bf->bf_m); 634 bf->bf_m = NULL; 635 } 636 if (bf->bf_dmamap != NULL) { 637 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 638 bf->bf_dmamap = NULL; 639 } 640 } 641 STAILQ_INIT(&sc->malo_rxbuf); 642 if (sc->malo_rxdma.dd_bufptr != NULL) { 643 free(sc->malo_rxdma.dd_bufptr, M_MALODEV); 644 sc->malo_rxdma.dd_bufptr = NULL; 645 } 646 if (sc->malo_rxdma.dd_desc_len != 0) 647 malo_desc_cleanup(sc, &sc->malo_rxdma); 648 } 649 650 static void 651 malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq) 652 { 653 struct malo_txbuf *bf; 654 struct ieee80211_node *ni; 655 656 STAILQ_FOREACH(bf, &txq->free, bf_list) { 657 if (bf->bf_m != NULL) { 658 m_freem(bf->bf_m); 659 bf->bf_m = NULL; 660 } 661 ni = bf->bf_node; 662 bf->bf_node = NULL; 663 if (ni != NULL) { 664 /* 665 * Reclaim node reference. 666 */ 667 ieee80211_free_node(ni); 668 } 669 if (bf->bf_dmamap != NULL) { 670 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 671 bf->bf_dmamap = NULL; 672 } 673 } 674 STAILQ_INIT(&txq->free); 675 txq->nfree = 0; 676 if (txq->dma.dd_bufptr != NULL) { 677 free(txq->dma.dd_bufptr, M_MALODEV); 678 txq->dma.dd_bufptr = NULL; 679 } 680 if (txq->dma.dd_desc_len != 0) 681 malo_desc_cleanup(sc, &txq->dma); 682 } 683 684 static void 685 malo_dma_cleanup(struct malo_softc *sc) 686 { 687 int i; 688 689 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 690 malo_txdma_cleanup(sc, &sc->malo_txq[i]); 691 692 malo_rxdma_cleanup(sc); 693 } 694 695 static int 696 malo_dma_setup(struct malo_softc *sc) 697 { 698 int error, i; 699 700 /* rxdma initializing. */ 701 error = malo_rxdma_setup(sc); 702 if (error != 0) 703 return error; 704 705 /* NB: we just have 1 tx queue now. */ 706 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 707 error = malo_txdma_setup(sc, &sc->malo_txq[i]); 708 if (error != 0) { 709 malo_dma_cleanup(sc); 710 711 return error; 712 } 713 714 malo_txq_init(sc, &sc->malo_txq[i], i); 715 } 716 717 return 0; 718 } 719 720 static void 721 malo_hal_set_rxtxdma(struct malo_softc *sc) 722 { 723 int i; 724 725 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, 726 sc->malo_hwdma.rxdesc_read); 727 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write, 728 sc->malo_hwdma.rxdesc_read); 729 730 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 731 malo_bar0_write4(sc, 732 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]); 733 } 734 } 735 736 /* 737 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are 738 * for compatibility with older firmware. For current firmware we send 739 * this information with a cmd block via malo_hal_sethwdma. 740 */ 741 static int 742 malo_setup_hwdma(struct malo_softc *sc) 743 { 744 int i; 745 struct malo_txq *txq; 746 747 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr; 748 749 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 750 txq = &sc->malo_txq[i]; 751 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr; 752 } 753 sc->malo_hwdma.maxnum_txwcb = malo_txbuf; 754 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES; 755 756 malo_hal_set_rxtxdma(sc); 757 758 return 0; 759 } 760 761 static void 762 malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum) 763 { 764 struct malo_txbuf *bf, *bn; 765 struct malo_txdesc *ds; 766 767 MALO_TXQ_LOCK_INIT(sc, txq); 768 txq->qnum = qnum; 769 txq->txpri = 0; /* XXX */ 770 771 STAILQ_FOREACH(bf, &txq->free, bf_list) { 772 bf->bf_txq = txq; 773 774 ds = bf->bf_desc; 775 bn = STAILQ_NEXT(bf, bf_list); 776 if (bn == NULL) 777 bn = STAILQ_FIRST(&txq->free); 778 ds->physnext = htole32(bn->bf_daddr); 779 } 780 STAILQ_INIT(&txq->active); 781 } 782 783 /* 784 * Reclaim resources for a setup queue. 785 */ 786 static void 787 malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq) 788 { 789 /* XXX hal work? */ 790 MALO_TXQ_LOCK_DESTROY(txq); 791 } 792 793 /* 794 * Allocate a tx buffer for sending a frame. 795 */ 796 static struct malo_txbuf * 797 malo_getbuf(struct malo_softc *sc, struct malo_txq *txq) 798 { 799 struct malo_txbuf *bf; 800 801 MALO_TXQ_LOCK(txq); 802 bf = STAILQ_FIRST(&txq->free); 803 if (bf != NULL) { 804 STAILQ_REMOVE_HEAD(&txq->free, bf_list); 805 txq->nfree--; 806 } 807 MALO_TXQ_UNLOCK(txq); 808 if (bf == NULL) { 809 DPRINTF(sc, MALO_DEBUG_XMIT, 810 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum); 811 sc->malo_stats.mst_tx_qstop++; 812 } 813 return bf; 814 } 815 816 static int 817 malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0) 818 { 819 struct mbuf *m; 820 int error; 821 822 /* 823 * Load the DMA map so any coalescing is done. This also calculates 824 * the number of descriptors we need. 825 */ 826 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 827 bf->bf_segs, &bf->bf_nseg, 828 BUS_DMA_NOWAIT); 829 if (error == EFBIG) { 830 /* XXX packet requires too many descriptors */ 831 bf->bf_nseg = MALO_TXDESC + 1; 832 } else if (error != 0) { 833 sc->malo_stats.mst_tx_busdma++; 834 m_freem(m0); 835 return error; 836 } 837 /* 838 * Discard null packets and check for packets that require too many 839 * TX descriptors. We try to convert the latter to a cluster. 840 */ 841 if (error == EFBIG) { /* too many desc's, linearize */ 842 sc->malo_stats.mst_tx_linear++; 843 m = m_defrag(m0, M_NOWAIT); 844 if (m == NULL) { 845 m_freem(m0); 846 sc->malo_stats.mst_tx_nombuf++; 847 return ENOMEM; 848 } 849 m0 = m; 850 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 851 bf->bf_segs, &bf->bf_nseg, 852 BUS_DMA_NOWAIT); 853 if (error != 0) { 854 sc->malo_stats.mst_tx_busdma++; 855 m_freem(m0); 856 return error; 857 } 858 KASSERT(bf->bf_nseg <= MALO_TXDESC, 859 ("too many segments after defrag; nseg %u", bf->bf_nseg)); 860 } else if (bf->bf_nseg == 0) { /* null packet, discard */ 861 sc->malo_stats.mst_tx_nodata++; 862 m_freem(m0); 863 return EIO; 864 } 865 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n", 866 __func__, m0, m0->m_pkthdr.len); 867 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 868 bf->bf_m = m0; 869 870 return 0; 871 } 872 873 #ifdef MALO_DEBUG 874 static void 875 malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix) 876 { 877 const struct malo_rxdesc *ds = bf->bf_desc; 878 uint32_t status = le32toh(ds->status); 879 880 printf("R[%2u] (DS.V:%p DS.P:%p) NEXT:%08x DATA:%08x RC:%02x%s\n" 881 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x" 882 " RATE:%02x QOS:%04x\n", 883 ix, ds, (const struct malo_desc *)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:%p)\n", 900 ds, (const struct malo_txdesc *)bf->bf_daddr); 901 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n", 902 le32toh(ds->physnext), 903 le32toh(ds->pktptr), le16toh(ds->pktlen), status, 904 status & MALO_TXD_STATUS_USED ? 905 "" : (status & 3) != 0 ? " *" : " !"); 906 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n", 907 ds->datarate, ds->txpriority, le16toh(ds->qosctrl), 908 le32toh(ds->sap_pktinfo), le16toh(ds->format)); 909 #if 0 910 { 911 const uint8_t *cp = (const uint8_t *) ds; 912 int i; 913 for (i = 0; i < sizeof(struct malo_txdesc); i++) { 914 printf("%02x ", cp[i]); 915 if (((i+1) % 16) == 0) 916 printf("\n"); 917 } 918 printf("\n"); 919 } 920 #endif 921 } 922 #endif /* MALO_DEBUG */ 923 924 static __inline void 925 malo_updatetxrate(struct ieee80211_node *ni, int rix) 926 { 927 #define N(x) (sizeof(x)/sizeof(x[0])) 928 static const int ieeerates[] = 929 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 }; 930 if (rix < N(ieeerates)) 931 ni->ni_txrate = ieeerates[rix]; 932 #undef N 933 } 934 935 static int 936 malo_fix2rate(int fix_rate) 937 { 938 #define N(x) (sizeof(x)/sizeof(x[0])) 939 static const int rates[] = 940 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 }; 941 return (fix_rate < N(rates) ? rates[fix_rate] : 0); 942 #undef N 943 } 944 945 /* idiomatic shorthands: MS = mask+shift, SM = shift+mask */ 946 #define MS(v,x) (((v) & x) >> x##_S) 947 #define SM(v,x) (((v) << x##_S) & x) 948 949 /* 950 * Process completed xmit descriptors from the specified queue. 951 */ 952 static int 953 malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq) 954 { 955 struct malo_txbuf *bf; 956 struct malo_txdesc *ds; 957 struct ieee80211_node *ni; 958 int nreaped; 959 uint32_t status; 960 961 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n", 962 __func__, txq->qnum); 963 for (nreaped = 0;; nreaped++) { 964 MALO_TXQ_LOCK(txq); 965 bf = STAILQ_FIRST(&txq->active); 966 if (bf == NULL) { 967 MALO_TXQ_UNLOCK(txq); 968 break; 969 } 970 ds = bf->bf_desc; 971 MALO_TXDESC_SYNC(txq, ds, 972 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 973 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) { 974 MALO_TXQ_UNLOCK(txq); 975 break; 976 } 977 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 978 MALO_TXQ_UNLOCK(txq); 979 980 #ifdef MALO_DEBUG 981 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC) 982 malo_printtxbuf(bf, txq->qnum, nreaped); 983 #endif 984 ni = bf->bf_node; 985 if (ni != NULL) { 986 status = le32toh(ds->status); 987 if (status & MALO_TXD_STATUS_OK) { 988 uint16_t format = le16toh(ds->format); 989 uint8_t txant = MS(format, MALO_TXD_ANTENNA); 990 991 sc->malo_stats.mst_ant_tx[txant]++; 992 if (status & MALO_TXD_STATUS_OK_RETRY) 993 sc->malo_stats.mst_tx_retries++; 994 if (status & MALO_TXD_STATUS_OK_MORE_RETRY) 995 sc->malo_stats.mst_tx_mretries++; 996 malo_updatetxrate(ni, ds->datarate); 997 sc->malo_stats.mst_tx_rate = ds->datarate; 998 } else { 999 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR) 1000 sc->malo_stats.mst_tx_linkerror++; 1001 if (status & MALO_TXD_STATUS_FAILED_XRETRY) 1002 sc->malo_stats.mst_tx_xretries++; 1003 if (status & MALO_TXD_STATUS_FAILED_AGING) 1004 sc->malo_stats.mst_tx_aging++; 1005 } 1006 /* 1007 * Do any tx complete callback. Note this must 1008 * be done before releasing the node reference. 1009 * XXX no way to figure out if frame was ACK'd 1010 */ 1011 if (bf->bf_m->m_flags & M_TXCB) { 1012 /* XXX strip fw len in case header inspected */ 1013 m_adj(bf->bf_m, sizeof(uint16_t)); 1014 ieee80211_process_callback(ni, bf->bf_m, 1015 (status & MALO_TXD_STATUS_OK) == 0); 1016 } 1017 /* 1018 * Reclaim reference to node. 1019 * 1020 * NB: the node may be reclaimed here if, for example 1021 * this is a DEAUTH message that was sent and the 1022 * node was timed out due to inactivity. 1023 */ 1024 ieee80211_free_node(ni); 1025 } 1026 ds->status = htole32(MALO_TXD_STATUS_IDLE); 1027 ds->pktlen = htole32(0); 1028 1029 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 1030 BUS_DMASYNC_POSTWRITE); 1031 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1032 m_freem(bf->bf_m); 1033 bf->bf_m = NULL; 1034 bf->bf_node = NULL; 1035 1036 MALO_TXQ_LOCK(txq); 1037 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1038 txq->nfree++; 1039 MALO_TXQ_UNLOCK(txq); 1040 } 1041 return nreaped; 1042 } 1043 1044 /* 1045 * Deferred processing of transmit interrupt. 1046 */ 1047 static void 1048 malo_tx_proc(void *arg, int npending) 1049 { 1050 struct malo_softc *sc = arg; 1051 struct ifnet *ifp = sc->malo_ifp; 1052 int i, nreaped; 1053 1054 /* 1055 * Process each active queue. 1056 */ 1057 nreaped = 0; 1058 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 1059 if (!STAILQ_EMPTY(&sc->malo_txq[i].active)) 1060 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]); 1061 } 1062 1063 if (nreaped != 0) { 1064 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1065 sc->malo_timer = 0; 1066 malo_start(ifp); 1067 } 1068 } 1069 1070 static int 1071 malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni, 1072 struct malo_txbuf *bf, struct mbuf *m0) 1073 { 1074 #define IEEE80211_DIR_DSTODS(wh) \ 1075 ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 1076 #define IS_DATA_FRAME(wh) \ 1077 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA) 1078 int error, ismcast, iswep; 1079 int copyhdrlen, hdrlen, pktlen; 1080 struct ieee80211_frame *wh; 1081 struct ifnet *ifp = sc->malo_ifp; 1082 struct ieee80211com *ic = ifp->if_l2com; 1083 struct ieee80211vap *vap = ni->ni_vap; 1084 struct malo_txdesc *ds; 1085 struct malo_txrec *tr; 1086 struct malo_txq *txq; 1087 uint16_t qos; 1088 1089 wh = mtod(m0, struct ieee80211_frame *); 1090 iswep = wh->i_fc[1] & IEEE80211_FC1_PROTECTED; 1091 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1092 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh); 1093 pktlen = m0->m_pkthdr.len; 1094 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1095 if (IEEE80211_DIR_DSTODS(wh)) { 1096 qos = *(uint16_t *) 1097 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos); 1098 copyhdrlen -= sizeof(qos); 1099 } else 1100 qos = *(uint16_t *) 1101 (((struct ieee80211_qosframe *) wh)->i_qos); 1102 } else 1103 qos = 0; 1104 1105 if (iswep) { 1106 struct ieee80211_key *k; 1107 1108 /* 1109 * Construct the 802.11 header+trailer for an encrypted 1110 * frame. The only reason this can fail is because of an 1111 * unknown or unsupported cipher/key type. 1112 * 1113 * NB: we do this even though the firmware will ignore 1114 * what we've done for WEP and TKIP as we need the 1115 * ExtIV filled in for CCMP and this also adjusts 1116 * the headers which simplifies our work below. 1117 */ 1118 k = ieee80211_crypto_encap(ni, m0); 1119 if (k == NULL) { 1120 /* 1121 * This can happen when the key is yanked after the 1122 * frame was queued. Just discard the frame; the 1123 * 802.11 layer counts failures and provides 1124 * debugging/diagnostics. 1125 */ 1126 m_freem(m0); 1127 return EIO; 1128 } 1129 1130 /* 1131 * Adjust the packet length for the crypto additions 1132 * done during encap and any other bits that the f/w 1133 * will add later on. 1134 */ 1135 pktlen = m0->m_pkthdr.len; 1136 1137 /* packet header may have moved, reset our local pointer */ 1138 wh = mtod(m0, struct ieee80211_frame *); 1139 } 1140 1141 if (ieee80211_radiotap_active_vap(vap)) { 1142 sc->malo_tx_th.wt_flags = 0; /* XXX */ 1143 if (iswep) 1144 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1145 sc->malo_tx_th.wt_txpower = ni->ni_txpower; 1146 sc->malo_tx_th.wt_antenna = sc->malo_txantenna; 1147 1148 ieee80211_radiotap_tx(vap, m0); 1149 } 1150 1151 /* 1152 * Copy up/down the 802.11 header; the firmware requires 1153 * we present a 2-byte payload length followed by a 1154 * 4-address header (w/o QoS), followed (optionally) by 1155 * any WEP/ExtIV header (but only filled in for CCMP). 1156 * We are assured the mbuf has sufficient headroom to 1157 * prepend in-place by the setup of ic_headroom in 1158 * malo_attach. 1159 */ 1160 if (hdrlen < sizeof(struct malo_txrec)) { 1161 const int space = sizeof(struct malo_txrec) - hdrlen; 1162 if (M_LEADINGSPACE(m0) < space) { 1163 /* NB: should never happen */ 1164 device_printf(sc->malo_dev, 1165 "not enough headroom, need %d found %zd, " 1166 "m_flags 0x%x m_len %d\n", 1167 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len); 1168 ieee80211_dump_pkt(ic, 1169 mtod(m0, const uint8_t *), m0->m_len, 0, -1); 1170 m_freem(m0); 1171 /* XXX stat */ 1172 return EIO; 1173 } 1174 M_PREPEND(m0, space, M_NOWAIT); 1175 } 1176 tr = mtod(m0, struct malo_txrec *); 1177 if (wh != (struct ieee80211_frame *) &tr->wh) 1178 ovbcopy(wh, &tr->wh, hdrlen); 1179 /* 1180 * Note: the "firmware length" is actually the length of the fully 1181 * formed "802.11 payload". That is, it's everything except for 1182 * the 802.11 header. In particular this includes all crypto 1183 * material including the MIC! 1184 */ 1185 tr->fwlen = htole16(pktlen - hdrlen); 1186 1187 /* 1188 * Load the DMA map so any coalescing is done. This 1189 * also calculates the number of descriptors we need. 1190 */ 1191 error = malo_tx_dmasetup(sc, bf, m0); 1192 if (error != 0) 1193 return error; 1194 bf->bf_node = ni; /* NB: held reference */ 1195 m0 = bf->bf_m; /* NB: may have changed */ 1196 tr = mtod(m0, struct malo_txrec *); 1197 wh = (struct ieee80211_frame *)&tr->wh; 1198 1199 /* 1200 * Formulate tx descriptor. 1201 */ 1202 ds = bf->bf_desc; 1203 txq = bf->bf_txq; 1204 1205 ds->qosctrl = qos; /* NB: already little-endian */ 1206 ds->pktptr = htole32(bf->bf_segs[0].ds_addr); 1207 ds->pktlen = htole16(bf->bf_segs[0].ds_len); 1208 /* NB: pPhysNext setup once, don't touch */ 1209 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0; 1210 ds->sap_pktinfo = 0; 1211 ds->format = 0; 1212 1213 /* 1214 * Select transmit rate. 1215 */ 1216 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 1217 case IEEE80211_FC0_TYPE_MGT: 1218 sc->malo_stats.mst_tx_mgmt++; 1219 /* fall thru... */ 1220 case IEEE80211_FC0_TYPE_CTL: 1221 ds->txpriority = 1; 1222 break; 1223 case IEEE80211_FC0_TYPE_DATA: 1224 ds->txpriority = txq->qnum; 1225 break; 1226 default: 1227 if_printf(ifp, "bogus frame type 0x%x (%s)\n", 1228 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__); 1229 /* XXX statistic */ 1230 m_freem(m0); 1231 return EIO; 1232 } 1233 1234 #ifdef MALO_DEBUG 1235 if (IFF_DUMPPKTS_XMIT(sc)) 1236 ieee80211_dump_pkt(ic, 1237 mtod(m0, const uint8_t *)+sizeof(uint16_t), 1238 m0->m_len - sizeof(uint16_t), ds->datarate, -1); 1239 #endif 1240 1241 MALO_TXQ_LOCK(txq); 1242 if (!IS_DATA_FRAME(wh)) 1243 ds->status |= htole32(1); 1244 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED); 1245 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list); 1246 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1247 1248 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1249 sc->malo_timer = 5; 1250 MALO_TXQ_UNLOCK(txq); 1251 return 0; 1252 #undef IEEE80211_DIR_DSTODS 1253 } 1254 1255 static void 1256 malo_start(struct ifnet *ifp) 1257 { 1258 struct malo_softc *sc = ifp->if_softc; 1259 struct ieee80211_node *ni; 1260 struct malo_txq *txq = &sc->malo_txq[0]; 1261 struct malo_txbuf *bf = NULL; 1262 struct mbuf *m; 1263 int nqueued = 0; 1264 1265 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) 1266 return; 1267 1268 for (;;) { 1269 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1270 if (m == NULL) 1271 break; 1272 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1273 bf = malo_getbuf(sc, txq); 1274 if (bf == NULL) { 1275 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1276 1277 /* XXX blocks other traffic */ 1278 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1279 sc->malo_stats.mst_tx_qstop++; 1280 break; 1281 } 1282 /* 1283 * Pass the frame to the h/w for transmission. 1284 */ 1285 if (malo_tx_start(sc, ni, bf, m)) { 1286 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1287 if (bf != NULL) { 1288 bf->bf_m = NULL; 1289 bf->bf_node = NULL; 1290 MALO_TXQ_LOCK(txq); 1291 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1292 MALO_TXQ_UNLOCK(txq); 1293 } 1294 ieee80211_free_node(ni); 1295 continue; 1296 } 1297 nqueued++; 1298 1299 if (nqueued >= malo_txcoalesce) { 1300 /* 1301 * Poke the firmware to process queued frames; 1302 * see below about (lack of) locking. 1303 */ 1304 nqueued = 0; 1305 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1306 } 1307 } 1308 1309 if (nqueued) { 1310 /* 1311 * NB: We don't need to lock against tx done because 1312 * this just prods the firmware to check the transmit 1313 * descriptors. The firmware will also start fetching 1314 * descriptors by itself if it notices new ones are 1315 * present when it goes to deliver a tx done interrupt 1316 * to the host. So if we race with tx done processing 1317 * it's ok. Delivering the kick here rather than in 1318 * malo_tx_start is an optimization to avoid poking the 1319 * firmware for each packet. 1320 * 1321 * NB: the queue id isn't used so 0 is ok. 1322 */ 1323 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1324 } 1325 } 1326 1327 static void 1328 malo_watchdog(void *arg) 1329 { 1330 struct malo_softc *sc; 1331 struct ifnet *ifp; 1332 1333 sc = arg; 1334 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1335 if (sc->malo_timer == 0 || --sc->malo_timer > 0) 1336 return; 1337 1338 ifp = sc->malo_ifp; 1339 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->malo_invalid) { 1340 if_printf(ifp, "watchdog timeout\n"); 1341 1342 /* XXX no way to reset h/w. now */ 1343 1344 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1345 sc->malo_stats.mst_watchdog++; 1346 } 1347 } 1348 1349 static int 1350 malo_hal_reset(struct malo_softc *sc) 1351 { 1352 static int first = 0; 1353 struct ifnet *ifp = sc->malo_ifp; 1354 struct ieee80211com *ic = ifp->if_l2com; 1355 struct malo_hal *mh = sc->malo_mh; 1356 1357 if (first == 0) { 1358 /* 1359 * NB: when the device firstly is initialized, sometimes 1360 * firmware could override rx/tx dma registers so we re-set 1361 * these values once. 1362 */ 1363 malo_hal_set_rxtxdma(sc); 1364 first = 1; 1365 } 1366 1367 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna); 1368 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna); 1369 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE); 1370 malo_chan_set(sc, ic->ic_curchan); 1371 1372 /* XXX needs other stuffs? */ 1373 1374 return 1; 1375 } 1376 1377 static __inline struct mbuf * 1378 malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf) 1379 { 1380 struct mbuf *m; 1381 bus_addr_t paddr; 1382 int error; 1383 1384 /* XXX don't need mbuf, just dma buffer */ 1385 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1386 if (m == NULL) { 1387 sc->malo_stats.mst_rx_nombuf++; /* XXX */ 1388 return NULL; 1389 } 1390 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap, 1391 mtod(m, caddr_t), MJUMPAGESIZE, 1392 malo_load_cb, &paddr, BUS_DMA_NOWAIT); 1393 if (error != 0) { 1394 if_printf(sc->malo_ifp, 1395 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1396 m_freem(m); 1397 return NULL; 1398 } 1399 bf->bf_data = paddr; 1400 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 1401 1402 return m; 1403 } 1404 1405 static int 1406 malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf) 1407 { 1408 struct malo_rxdesc *ds; 1409 1410 ds = bf->bf_desc; 1411 if (bf->bf_m == NULL) { 1412 bf->bf_m = malo_getrxmbuf(sc, bf); 1413 if (bf->bf_m == NULL) { 1414 /* mark descriptor to be skipped */ 1415 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN; 1416 /* NB: don't need PREREAD */ 1417 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE); 1418 return ENOMEM; 1419 } 1420 } 1421 1422 /* 1423 * Setup descriptor. 1424 */ 1425 ds->qosctrl = 0; 1426 ds->snr = 0; 1427 ds->status = MALO_RXD_STATUS_IDLE; 1428 ds->channel = 0; 1429 ds->pktlen = htole16(MALO_RXSIZE); 1430 ds->nf = 0; 1431 ds->physbuffdata = htole32(bf->bf_data); 1432 /* NB: don't touch pPhysNext, set once */ 1433 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN; 1434 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1435 1436 return 0; 1437 } 1438 1439 /* 1440 * Setup the rx data structures. This should only be done once or we may get 1441 * out of sync with the firmware. 1442 */ 1443 static int 1444 malo_startrecv(struct malo_softc *sc) 1445 { 1446 struct malo_rxbuf *bf, *prev; 1447 struct malo_rxdesc *ds; 1448 1449 if (sc->malo_recvsetup == 1) { 1450 malo_mode_init(sc); /* set filters, etc. */ 1451 return 0; 1452 } 1453 1454 prev = NULL; 1455 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 1456 int error = malo_rxbuf_init(sc, bf); 1457 if (error != 0) { 1458 DPRINTF(sc, MALO_DEBUG_RECV, 1459 "%s: malo_rxbuf_init failed %d\n", 1460 __func__, error); 1461 return error; 1462 } 1463 if (prev != NULL) { 1464 ds = prev->bf_desc; 1465 ds->physnext = htole32(bf->bf_daddr); 1466 } 1467 prev = bf; 1468 } 1469 if (prev != NULL) { 1470 ds = prev->bf_desc; 1471 ds->physnext = 1472 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr); 1473 } 1474 1475 sc->malo_recvsetup = 1; 1476 1477 malo_mode_init(sc); /* set filters, etc. */ 1478 1479 return 0; 1480 } 1481 1482 static void 1483 malo_init_locked(struct malo_softc *sc) 1484 { 1485 struct ifnet *ifp = sc->malo_ifp; 1486 struct malo_hal *mh = sc->malo_mh; 1487 int error; 1488 1489 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1490 __func__, ifp->if_flags); 1491 1492 MALO_LOCK_ASSERT(sc); 1493 1494 /* 1495 * Stop anything previously setup. This is safe whether this is 1496 * the first time through or not. 1497 */ 1498 malo_stop_locked(ifp, 0); 1499 1500 /* 1501 * Push state to the firmware. 1502 */ 1503 if (!malo_hal_reset(sc)) { 1504 if_printf(ifp, "%s: unable to reset hardware\n", __func__); 1505 return; 1506 } 1507 1508 /* 1509 * Setup recv (once); transmit is already good to go. 1510 */ 1511 error = malo_startrecv(sc); 1512 if (error != 0) { 1513 if_printf(ifp, "%s: unable to start recv logic, error %d\n", 1514 __func__, error); 1515 return; 1516 } 1517 1518 /* 1519 * Enable interrupts. 1520 */ 1521 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY 1522 | MALO_A2HRIC_BIT_TX_DONE 1523 | MALO_A2HRIC_BIT_OPC_DONE 1524 | MALO_A2HRIC_BIT_MAC_EVENT 1525 | MALO_A2HRIC_BIT_RX_PROBLEM 1526 | MALO_A2HRIC_BIT_ICV_ERROR 1527 | MALO_A2HRIC_BIT_RADAR_DETECT 1528 | MALO_A2HRIC_BIT_CHAN_SWITCH; 1529 1530 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1531 malo_hal_intrset(mh, sc->malo_imask); 1532 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1533 } 1534 1535 static void 1536 malo_init(void *arg) 1537 { 1538 struct malo_softc *sc = (struct malo_softc *) arg; 1539 struct ifnet *ifp = sc->malo_ifp; 1540 struct ieee80211com *ic = ifp->if_l2com; 1541 1542 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1543 __func__, ifp->if_flags); 1544 1545 MALO_LOCK(sc); 1546 malo_init_locked(sc); 1547 1548 MALO_UNLOCK(sc); 1549 1550 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1551 ieee80211_start_all(ic); /* start all vap's */ 1552 } 1553 1554 /* 1555 * Set the multicast filter contents into the hardware. 1556 */ 1557 static void 1558 malo_setmcastfilter(struct malo_softc *sc) 1559 { 1560 struct ifnet *ifp = sc->malo_ifp; 1561 struct ieee80211com *ic = ifp->if_l2com; 1562 struct ifmultiaddr *ifma; 1563 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX]; 1564 uint8_t *mp; 1565 int nmc; 1566 1567 mp = macs; 1568 nmc = 0; 1569 1570 if (ic->ic_opmode == IEEE80211_M_MONITOR || 1571 (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC))) 1572 goto all; 1573 1574 if_maddr_rlock(ifp); 1575 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1576 if (ifma->ifma_addr->sa_family != AF_LINK) 1577 continue; 1578 1579 if (nmc == MALO_HAL_MCAST_MAX) { 1580 ifp->if_flags |= IFF_ALLMULTI; 1581 if_maddr_runlock(ifp); 1582 goto all; 1583 } 1584 IEEE80211_ADDR_COPY(mp, 1585 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1586 1587 mp += IEEE80211_ADDR_LEN, nmc++; 1588 } 1589 if_maddr_runlock(ifp); 1590 1591 malo_hal_setmcast(sc->malo_mh, nmc, macs); 1592 1593 all: 1594 /* 1595 * XXX we don't know how to set the f/w for supporting 1596 * IFF_ALLMULTI | IFF_PROMISC cases 1597 */ 1598 return; 1599 } 1600 1601 static int 1602 malo_mode_init(struct malo_softc *sc) 1603 { 1604 struct ifnet *ifp = sc->malo_ifp; 1605 struct ieee80211com *ic = ifp->if_l2com; 1606 struct malo_hal *mh = sc->malo_mh; 1607 1608 /* 1609 * NB: Ignore promisc in hostap mode; it's set by the 1610 * bridge. This is wrong but we have no way to 1611 * identify internal requests (from the bridge) 1612 * versus external requests such as for tcpdump. 1613 */ 1614 malo_hal_setpromisc(mh, (ifp->if_flags & IFF_PROMISC) && 1615 ic->ic_opmode != IEEE80211_M_HOSTAP); 1616 malo_setmcastfilter(sc); 1617 1618 return ENXIO; 1619 } 1620 1621 static void 1622 malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq) 1623 { 1624 struct ieee80211_node *ni; 1625 struct malo_txbuf *bf; 1626 u_int ix; 1627 1628 /* 1629 * NB: this assumes output has been stopped and 1630 * we do not need to block malo_tx_tasklet 1631 */ 1632 for (ix = 0;; ix++) { 1633 MALO_TXQ_LOCK(txq); 1634 bf = STAILQ_FIRST(&txq->active); 1635 if (bf == NULL) { 1636 MALO_TXQ_UNLOCK(txq); 1637 break; 1638 } 1639 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 1640 MALO_TXQ_UNLOCK(txq); 1641 #ifdef MALO_DEBUG 1642 if (sc->malo_debug & MALO_DEBUG_RESET) { 1643 struct ifnet *ifp = sc->malo_ifp; 1644 struct ieee80211com *ic = ifp->if_l2com; 1645 const struct malo_txrec *tr = 1646 mtod(bf->bf_m, const struct malo_txrec *); 1647 malo_printtxbuf(bf, txq->qnum, ix); 1648 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh, 1649 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1); 1650 } 1651 #endif /* MALO_DEBUG */ 1652 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1653 ni = bf->bf_node; 1654 bf->bf_node = NULL; 1655 if (ni != NULL) { 1656 /* 1657 * Reclaim node reference. 1658 */ 1659 ieee80211_free_node(ni); 1660 } 1661 m_freem(bf->bf_m); 1662 bf->bf_m = NULL; 1663 1664 MALO_TXQ_LOCK(txq); 1665 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1666 txq->nfree++; 1667 MALO_TXQ_UNLOCK(txq); 1668 } 1669 } 1670 1671 static void 1672 malo_stop_locked(struct ifnet *ifp, int disable) 1673 { 1674 struct malo_softc *sc = ifp->if_softc; 1675 struct malo_hal *mh = sc->malo_mh; 1676 int i; 1677 1678 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u if_flags 0x%x\n", 1679 __func__, sc->malo_invalid, ifp->if_flags); 1680 1681 MALO_LOCK_ASSERT(sc); 1682 1683 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1684 return; 1685 1686 /* 1687 * Shutdown the hardware and driver: 1688 * disable interrupts 1689 * turn off the radio 1690 * drain and release tx queues 1691 * 1692 * Note that some of this work is not possible if the hardware 1693 * is gone (invalid). 1694 */ 1695 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1696 callout_stop(&sc->malo_watchdog_timer); 1697 sc->malo_timer = 0; 1698 /* diable interrupt. */ 1699 malo_hal_intrset(mh, 0); 1700 /* turn off the radio. */ 1701 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE); 1702 1703 /* drain and release tx queues. */ 1704 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 1705 malo_tx_draintxq(sc, &sc->malo_txq[i]); 1706 } 1707 1708 static int 1709 malo_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1710 { 1711 #define MALO_IS_RUNNING(ifp) \ 1712 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1713 struct malo_softc *sc = ifp->if_softc; 1714 struct ieee80211com *ic = ifp->if_l2com; 1715 struct ifreq *ifr = (struct ifreq *) data; 1716 int error = 0, startall = 0; 1717 1718 MALO_LOCK(sc); 1719 switch (cmd) { 1720 case SIOCSIFFLAGS: 1721 if (MALO_IS_RUNNING(ifp)) { 1722 /* 1723 * To avoid rescanning another access point, 1724 * do not call malo_init() here. Instead, 1725 * only reflect promisc mode settings. 1726 */ 1727 malo_mode_init(sc); 1728 } else if (ifp->if_flags & IFF_UP) { 1729 /* 1730 * Beware of being called during attach/detach 1731 * to reset promiscuous mode. In that case we 1732 * will still be marked UP but not RUNNING. 1733 * However trying to re-init the interface 1734 * is the wrong thing to do as we've already 1735 * torn down much of our state. There's 1736 * probably a better way to deal with this. 1737 */ 1738 if (!sc->malo_invalid) { 1739 malo_init_locked(sc); 1740 startall = 1; 1741 } 1742 } else 1743 malo_stop_locked(ifp, 1); 1744 break; 1745 case SIOCGIFMEDIA: 1746 case SIOCSIFMEDIA: 1747 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1748 break; 1749 default: 1750 error = ether_ioctl(ifp, cmd, data); 1751 break; 1752 } 1753 MALO_UNLOCK(sc); 1754 1755 if (startall) 1756 ieee80211_start_all(ic); 1757 return error; 1758 #undef MALO_IS_RUNNING 1759 } 1760 1761 /* 1762 * Callback from the 802.11 layer to update the slot time 1763 * based on the current setting. We use it to notify the 1764 * firmware of ERP changes and the f/w takes care of things 1765 * like slot time and preamble. 1766 */ 1767 static void 1768 malo_updateslot(struct ifnet *ifp) 1769 { 1770 struct malo_softc *sc = ifp->if_softc; 1771 struct ieee80211com *ic = ifp->if_l2com; 1772 struct malo_hal *mh = sc->malo_mh; 1773 int error; 1774 1775 /* NB: can be called early; suppress needless cmds */ 1776 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1777 return; 1778 1779 DPRINTF(sc, MALO_DEBUG_RESET, 1780 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n", 1781 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags, 1782 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags); 1783 1784 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1785 error = malo_hal_set_slot(mh, 1); 1786 else 1787 error = malo_hal_set_slot(mh, 0); 1788 1789 if (error != 0) 1790 device_printf(sc->malo_dev, "setting %s slot failed\n", 1791 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long"); 1792 } 1793 1794 static int 1795 malo_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1796 { 1797 struct ieee80211com *ic = vap->iv_ic; 1798 struct malo_softc *sc = ic->ic_ifp->if_softc; 1799 struct malo_hal *mh = sc->malo_mh; 1800 int error; 1801 1802 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1803 ieee80211_state_name[vap->iv_state], 1804 ieee80211_state_name[nstate]); 1805 1806 /* 1807 * Invoke the net80211 layer first so iv_bss is setup. 1808 */ 1809 error = MALO_VAP(vap)->malo_newstate(vap, nstate, arg); 1810 if (error != 0) 1811 return error; 1812 1813 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1814 struct ieee80211_node *ni = vap->iv_bss; 1815 enum ieee80211_phymode mode = ieee80211_chan2mode(ni->ni_chan); 1816 const struct ieee80211_txparam *tp = &vap->iv_txparms[mode]; 1817 1818 DPRINTF(sc, MALO_DEBUG_STATE, 1819 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s " 1820 "capinfo 0x%04x chan %d associd 0x%x mode %d rate %d\n", 1821 vap->iv_ifp->if_xname, __func__, vap->iv_flags, 1822 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo, 1823 ieee80211_chan2ieee(ic, ic->ic_curchan), 1824 ni->ni_associd, mode, tp->ucastrate); 1825 1826 malo_hal_setradio(mh, 1, 1827 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? 1828 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE); 1829 malo_hal_setassocid(sc->malo_mh, ni->ni_bssid, ni->ni_associd); 1830 malo_hal_set_rate(mh, mode, 1831 tp->ucastrate == IEEE80211_FIXED_RATE_NONE ? 1832 0 : malo_fix2rate(tp->ucastrate)); 1833 } 1834 return 0; 1835 } 1836 1837 static int 1838 malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1839 const struct ieee80211_bpf_params *params) 1840 { 1841 struct ieee80211com *ic = ni->ni_ic; 1842 struct ifnet *ifp = ic->ic_ifp; 1843 struct malo_softc *sc = ifp->if_softc; 1844 struct malo_txbuf *bf; 1845 struct malo_txq *txq; 1846 1847 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) { 1848 ieee80211_free_node(ni); 1849 m_freem(m); 1850 return ENETDOWN; 1851 } 1852 1853 /* 1854 * Grab a TX buffer and associated resources. Note that we depend 1855 * on the classification by the 802.11 layer to get to the right h/w 1856 * queue. Management frames must ALWAYS go on queue 1 but we 1857 * cannot just force that here because we may receive non-mgt frames. 1858 */ 1859 txq = &sc->malo_txq[0]; 1860 bf = malo_getbuf(sc, txq); 1861 if (bf == NULL) { 1862 /* XXX blocks other traffic */ 1863 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1864 ieee80211_free_node(ni); 1865 m_freem(m); 1866 return ENOBUFS; 1867 } 1868 1869 /* 1870 * Pass the frame to the h/w for transmission. 1871 */ 1872 if (malo_tx_start(sc, ni, bf, m) != 0) { 1873 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1874 bf->bf_m = NULL; 1875 bf->bf_node = NULL; 1876 MALO_TXQ_LOCK(txq); 1877 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1878 txq->nfree++; 1879 MALO_TXQ_UNLOCK(txq); 1880 1881 ieee80211_free_node(ni); 1882 return EIO; /* XXX */ 1883 } 1884 1885 /* 1886 * NB: We don't need to lock against tx done because this just 1887 * prods the firmware to check the transmit descriptors. The firmware 1888 * will also start fetching descriptors by itself if it notices 1889 * new ones are present when it goes to deliver a tx done interrupt 1890 * to the host. So if we race with tx done processing it's ok. 1891 * Delivering the kick here rather than in malo_tx_start is 1892 * an optimization to avoid poking the firmware for each packet. 1893 * 1894 * NB: the queue id isn't used so 0 is ok. 1895 */ 1896 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1897 1898 return 0; 1899 } 1900 1901 static void 1902 malo_sysctlattach(struct malo_softc *sc) 1903 { 1904 #ifdef MALO_DEBUG 1905 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev); 1906 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev); 1907 1908 sc->malo_debug = malo_debug; 1909 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 1910 "debug", CTLFLAG_RW, &sc->malo_debug, 0, 1911 "control debugging printfs"); 1912 #endif 1913 } 1914 1915 static void 1916 malo_announce(struct malo_softc *sc) 1917 { 1918 struct ifnet *ifp = sc->malo_ifp; 1919 1920 if_printf(ifp, "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n", 1921 sc->malo_hwspecs.hwversion, 1922 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff, 1923 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff, 1924 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff, 1925 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff, 1926 sc->malo_hwspecs.regioncode); 1927 1928 if (bootverbose || malo_rxbuf != MALO_RXBUF) 1929 if_printf(ifp, "using %u rx buffers\n", malo_rxbuf); 1930 if (bootverbose || malo_txbuf != MALO_TXBUF) 1931 if_printf(ifp, "using %u tx buffers\n", malo_txbuf); 1932 } 1933 1934 /* 1935 * Convert net80211 channel to a HAL channel. 1936 */ 1937 static void 1938 malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan) 1939 { 1940 hc->channel = chan->ic_ieee; 1941 1942 *(uint32_t *)&hc->flags = 0; 1943 if (IEEE80211_IS_CHAN_2GHZ(chan)) 1944 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ; 1945 } 1946 1947 /* 1948 * Set/change channels. If the channel is really being changed, 1949 * it's done by reseting the chip. To accomplish this we must 1950 * first cleanup any pending DMA, then restart stuff after a la 1951 * malo_init. 1952 */ 1953 static int 1954 malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan) 1955 { 1956 struct malo_hal *mh = sc->malo_mh; 1957 struct malo_hal_channel hchan; 1958 1959 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n", 1960 __func__, chan->ic_freq, chan->ic_flags); 1961 1962 /* 1963 * Convert to a HAL channel description with the flags constrained 1964 * to reflect the current operating mode. 1965 */ 1966 malo_mapchan(&hchan, chan); 1967 malo_hal_intrset(mh, 0); /* disable interrupts */ 1968 malo_hal_setchannel(mh, &hchan); 1969 malo_hal_settxpower(mh, &hchan); 1970 1971 /* 1972 * Update internal state. 1973 */ 1974 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq); 1975 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq); 1976 if (IEEE80211_IS_CHAN_ANYG(chan)) { 1977 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G); 1978 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G); 1979 } else { 1980 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B); 1981 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B); 1982 } 1983 sc->malo_curchan = hchan; 1984 malo_hal_intrset(mh, sc->malo_imask); 1985 1986 return 0; 1987 } 1988 1989 static void 1990 malo_scan_start(struct ieee80211com *ic) 1991 { 1992 struct ifnet *ifp = ic->ic_ifp; 1993 struct malo_softc *sc = ifp->if_softc; 1994 1995 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 1996 } 1997 1998 static void 1999 malo_scan_end(struct ieee80211com *ic) 2000 { 2001 struct ifnet *ifp = ic->ic_ifp; 2002 struct malo_softc *sc = ifp->if_softc; 2003 2004 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2005 } 2006 2007 static void 2008 malo_set_channel(struct ieee80211com *ic) 2009 { 2010 struct ifnet *ifp = ic->ic_ifp; 2011 struct malo_softc *sc = ifp->if_softc; 2012 2013 (void) malo_chan_set(sc, ic->ic_curchan); 2014 } 2015 2016 static void 2017 malo_rx_proc(void *arg, int npending) 2018 { 2019 #define IEEE80211_DIR_DSTODS(wh) \ 2020 ((((const struct ieee80211_frame *)wh)->i_fc[1] & \ 2021 IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 2022 struct malo_softc *sc = arg; 2023 struct ifnet *ifp = sc->malo_ifp; 2024 struct ieee80211com *ic = ifp->if_l2com; 2025 struct malo_rxbuf *bf; 2026 struct malo_rxdesc *ds; 2027 struct mbuf *m, *mnew; 2028 struct ieee80211_qosframe *wh; 2029 struct ieee80211_qosframe_addr4 *wh4; 2030 struct ieee80211_node *ni; 2031 int off, len, hdrlen, pktlen, rssi, ntodo; 2032 uint8_t *data, status; 2033 uint32_t readptr, writeptr; 2034 2035 DPRINTF(sc, MALO_DEBUG_RX_PROC, 2036 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n", 2037 __func__, npending, 2038 sc->malo_hwspecs.rxdesc_read, 2039 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read), 2040 sc->malo_hwspecs.rxdesc_write, 2041 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write)); 2042 2043 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read); 2044 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write); 2045 if (readptr == writeptr) 2046 return; 2047 2048 bf = sc->malo_rxnext; 2049 for (ntodo = malo_rxquota; ntodo > 0 && readptr != writeptr; ntodo--) { 2050 if (bf == NULL) { 2051 bf = STAILQ_FIRST(&sc->malo_rxbuf); 2052 break; 2053 } 2054 ds = bf->bf_desc; 2055 if (bf->bf_m == NULL) { 2056 /* 2057 * If data allocation failed previously there 2058 * will be no buffer; try again to re-populate it. 2059 * Note the firmware will not advance to the next 2060 * descriptor with a dma buffer so we must mimic 2061 * this or we'll get out of sync. 2062 */ 2063 DPRINTF(sc, MALO_DEBUG_ANY, 2064 "%s: rx buf w/o dma memory\n", __func__); 2065 (void)malo_rxbuf_init(sc, bf); 2066 break; 2067 } 2068 MALO_RXDESC_SYNC(sc, ds, 2069 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2070 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN) 2071 break; 2072 2073 readptr = le32toh(ds->physnext); 2074 2075 #ifdef MALO_DEBUG 2076 if (sc->malo_debug & MALO_DEBUG_RECV_DESC) 2077 malo_printrxbuf(bf, 0); 2078 #endif 2079 status = ds->status; 2080 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) { 2081 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2082 goto rx_next; 2083 } 2084 /* 2085 * Sync the data buffer. 2086 */ 2087 len = le16toh(ds->pktlen); 2088 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 2089 BUS_DMASYNC_POSTREAD); 2090 /* 2091 * The 802.11 header is provided all or in part at the front; 2092 * use it to calculate the true size of the header that we'll 2093 * construct below. We use this to figure out where to copy 2094 * payload prior to constructing the header. 2095 */ 2096 m = bf->bf_m; 2097 data = mtod(m, uint8_t *); 2098 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t)); 2099 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4); 2100 2101 /* 2102 * Calculate RSSI. XXX wrong 2103 */ 2104 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */ 2105 if (rssi > 100) 2106 rssi = 100; 2107 2108 pktlen = hdrlen + (len - off); 2109 /* 2110 * NB: we know our frame is at least as large as 2111 * IEEE80211_MIN_LEN because there is a 4-address frame at 2112 * the front. Hence there's no need to vet the packet length. 2113 * If the frame in fact is too small it should be discarded 2114 * at the net80211 layer. 2115 */ 2116 2117 /* XXX don't need mbuf, just dma buffer */ 2118 mnew = malo_getrxmbuf(sc, bf); 2119 if (mnew == NULL) { 2120 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2121 goto rx_next; 2122 } 2123 /* 2124 * Attach the dma buffer to the mbuf; malo_rxbuf_init will 2125 * re-setup the rx descriptor using the replacement dma 2126 * buffer we just installed above. 2127 */ 2128 bf->bf_m = mnew; 2129 m->m_data += off - hdrlen; 2130 m->m_pkthdr.len = m->m_len = pktlen; 2131 m->m_pkthdr.rcvif = ifp; 2132 2133 /* 2134 * Piece 802.11 header together. 2135 */ 2136 wh = mtod(m, struct ieee80211_qosframe *); 2137 /* NB: don't need to do this sometimes but ... */ 2138 /* XXX special case so we can memcpy after m_devget? */ 2139 ovbcopy(data + sizeof(uint16_t), wh, hdrlen); 2140 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2141 if (IEEE80211_DIR_DSTODS(wh)) { 2142 wh4 = mtod(m, 2143 struct ieee80211_qosframe_addr4*); 2144 *(uint16_t *)wh4->i_qos = ds->qosctrl; 2145 } else { 2146 *(uint16_t *)wh->i_qos = ds->qosctrl; 2147 } 2148 } 2149 if (ieee80211_radiotap_active(ic)) { 2150 sc->malo_rx_th.wr_flags = 0; 2151 sc->malo_rx_th.wr_rate = ds->rate; 2152 sc->malo_rx_th.wr_antsignal = rssi; 2153 sc->malo_rx_th.wr_antnoise = ds->nf; 2154 } 2155 #ifdef MALO_DEBUG 2156 if (IFF_DUMPPKTS_RECV(sc, wh)) { 2157 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 2158 len, ds->rate, rssi); 2159 } 2160 #endif 2161 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 2162 2163 /* dispatch */ 2164 ni = ieee80211_find_rxnode(ic, 2165 (struct ieee80211_frame_min *)wh); 2166 if (ni != NULL) { 2167 (void) ieee80211_input(ni, m, rssi, ds->nf); 2168 ieee80211_free_node(ni); 2169 } else 2170 (void) ieee80211_input_all(ic, m, rssi, ds->nf); 2171 rx_next: 2172 /* NB: ignore ENOMEM so we process more descriptors */ 2173 (void) malo_rxbuf_init(sc, bf); 2174 bf = STAILQ_NEXT(bf, bf_list); 2175 } 2176 2177 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr); 2178 sc->malo_rxnext = bf; 2179 2180 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 && 2181 !IFQ_IS_EMPTY(&ifp->if_snd)) 2182 malo_start(ifp); 2183 #undef IEEE80211_DIR_DSTODS 2184 } 2185 2186 static void 2187 malo_stop(struct ifnet *ifp, int disable) 2188 { 2189 struct malo_softc *sc = ifp->if_softc; 2190 2191 MALO_LOCK(sc); 2192 malo_stop_locked(ifp, disable); 2193 MALO_UNLOCK(sc); 2194 } 2195 2196 /* 2197 * Reclaim all tx queue resources. 2198 */ 2199 static void 2200 malo_tx_cleanup(struct malo_softc *sc) 2201 { 2202 int i; 2203 2204 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 2205 malo_tx_cleanupq(sc, &sc->malo_txq[i]); 2206 } 2207 2208 int 2209 malo_detach(struct malo_softc *sc) 2210 { 2211 struct ifnet *ifp = sc->malo_ifp; 2212 struct ieee80211com *ic = ifp->if_l2com; 2213 2214 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2215 __func__, ifp->if_flags); 2216 2217 malo_stop(ifp, 1); 2218 2219 if (sc->malo_tq != NULL) { 2220 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask); 2221 taskqueue_drain(sc->malo_tq, &sc->malo_txtask); 2222 taskqueue_free(sc->malo_tq); 2223 sc->malo_tq = NULL; 2224 } 2225 2226 /* 2227 * NB: the order of these is important: 2228 * o call the 802.11 layer before detaching the hal to 2229 * insure callbacks into the driver to delete global 2230 * key cache entries can be handled 2231 * o reclaim the tx queue data structures after calling 2232 * the 802.11 layer as we'll get called back to reclaim 2233 * node state and potentially want to use them 2234 * o to cleanup the tx queues the hal is called, so detach 2235 * it last 2236 * Other than that, it's straightforward... 2237 */ 2238 ieee80211_ifdetach(ic); 2239 callout_drain(&sc->malo_watchdog_timer); 2240 malo_dma_cleanup(sc); 2241 malo_tx_cleanup(sc); 2242 malo_hal_detach(sc->malo_mh); 2243 if_free(ifp); 2244 2245 MALO_LOCK_DESTROY(sc); 2246 2247 return 0; 2248 } 2249 2250 void 2251 malo_shutdown(struct malo_softc *sc) 2252 { 2253 malo_stop(sc->malo_ifp, 1); 2254 } 2255 2256 void 2257 malo_suspend(struct malo_softc *sc) 2258 { 2259 struct ifnet *ifp = sc->malo_ifp; 2260 2261 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2262 __func__, ifp->if_flags); 2263 2264 malo_stop(ifp, 1); 2265 } 2266 2267 void 2268 malo_resume(struct malo_softc *sc) 2269 { 2270 struct ifnet *ifp = sc->malo_ifp; 2271 2272 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2273 __func__, ifp->if_flags); 2274 2275 if (ifp->if_flags & IFF_UP) 2276 malo_init(sc); 2277 } 2278