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_RW, &malo_txcoalesce, 69 0, "tx buffers to send at once"); 70 TUNABLE_INT("hw.malo.txcoalesce", &malo_txcoalesce); 71 static int malo_rxbuf = MALO_RXBUF; /* # rx buffers to allocate */ 72 SYSCTL_INT(_hw_malo, OID_AUTO, rxbuf, CTLFLAG_RW, &malo_rxbuf, 73 0, "rx buffers allocated"); 74 TUNABLE_INT("hw.malo.rxbuf", &malo_rxbuf); 75 static int malo_rxquota = MALO_RXBUF; /* # max buffers to process */ 76 SYSCTL_INT(_hw_malo, OID_AUTO, rxquota, CTLFLAG_RW, &malo_rxquota, 77 0, "max rx buffers to process per interrupt"); 78 TUNABLE_INT("hw.malo.rxquota", &malo_rxquota); 79 static int malo_txbuf = MALO_TXBUF; /* # tx buffers to allocate */ 80 SYSCTL_INT(_hw_malo, OID_AUTO, txbuf, CTLFLAG_RW, &malo_txbuf, 81 0, "tx buffers allocated"); 82 TUNABLE_INT("hw.malo.txbuf", &malo_txbuf); 83 84 #ifdef MALO_DEBUG 85 static int malo_debug = 0; 86 SYSCTL_INT(_hw_malo, OID_AUTO, debug, CTLFLAG_RW, &malo_debug, 87 0, "control debugging printfs"); 88 TUNABLE_INT("hw.malo.debug", &malo_debug); 89 enum { 90 MALO_DEBUG_XMIT = 0x00000001, /* basic xmit operation */ 91 MALO_DEBUG_XMIT_DESC = 0x00000002, /* xmit descriptors */ 92 MALO_DEBUG_RECV = 0x00000004, /* basic recv operation */ 93 MALO_DEBUG_RECV_DESC = 0x00000008, /* recv descriptors */ 94 MALO_DEBUG_RESET = 0x00000010, /* reset processing */ 95 MALO_DEBUG_INTR = 0x00000040, /* ISR */ 96 MALO_DEBUG_TX_PROC = 0x00000080, /* tx ISR proc */ 97 MALO_DEBUG_RX_PROC = 0x00000100, /* rx ISR proc */ 98 MALO_DEBUG_STATE = 0x00000400, /* 802.11 state transitions */ 99 MALO_DEBUG_NODE = 0x00000800, /* node management */ 100 MALO_DEBUG_RECV_ALL = 0x00001000, /* trace all frames (beacons) */ 101 MALO_DEBUG_FW = 0x00008000, /* firmware */ 102 MALO_DEBUG_ANY = 0xffffffff 103 }; 104 #define IS_BEACON(wh) \ 105 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK | \ 106 IEEE80211_FC0_SUBTYPE_MASK)) == \ 107 (IEEE80211_FC0_TYPE_MGT|IEEE80211_FC0_SUBTYPE_BEACON)) 108 #define IFF_DUMPPKTS_RECV(sc, wh) \ 109 (((sc->malo_debug & MALO_DEBUG_RECV) && \ 110 ((sc->malo_debug & MALO_DEBUG_RECV_ALL) || !IS_BEACON(wh))) || \ 111 (sc->malo_ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == \ 112 (IFF_DEBUG|IFF_LINK2)) 113 #define IFF_DUMPPKTS_XMIT(sc) \ 114 ((sc->malo_debug & MALO_DEBUG_XMIT) || \ 115 (sc->malo_ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == \ 116 (IFF_DEBUG | IFF_LINK2)) 117 #define DPRINTF(sc, m, fmt, ...) do { \ 118 if (sc->malo_debug & (m)) \ 119 printf(fmt, __VA_ARGS__); \ 120 } while (0) 121 #else 122 #define DPRINTF(sc, m, fmt, ...) do { \ 123 (void) sc; \ 124 } while (0) 125 #endif 126 127 static MALLOC_DEFINE(M_MALODEV, "malodev", "malo driver dma buffers"); 128 129 static struct ieee80211vap *malo_vap_create(struct ieee80211com *, 130 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 131 const uint8_t [IEEE80211_ADDR_LEN], 132 const uint8_t [IEEE80211_ADDR_LEN]); 133 static void malo_vap_delete(struct ieee80211vap *); 134 static int malo_dma_setup(struct malo_softc *); 135 static int malo_setup_hwdma(struct malo_softc *); 136 static void malo_txq_init(struct malo_softc *, struct malo_txq *, int); 137 static void malo_tx_cleanupq(struct malo_softc *, struct malo_txq *); 138 static void malo_start(struct ifnet *); 139 static void malo_watchdog(void *); 140 static int malo_ioctl(struct ifnet *, u_long, caddr_t); 141 static void malo_updateslot(struct ifnet *); 142 static int malo_newstate(struct ieee80211vap *, enum ieee80211_state, int); 143 static void malo_scan_start(struct ieee80211com *); 144 static void malo_scan_end(struct ieee80211com *); 145 static void malo_set_channel(struct ieee80211com *); 146 static int malo_raw_xmit(struct ieee80211_node *, struct mbuf *, 147 const struct ieee80211_bpf_params *); 148 static void malo_sysctlattach(struct malo_softc *); 149 static void malo_announce(struct malo_softc *); 150 static void malo_dma_cleanup(struct malo_softc *); 151 static void malo_stop_locked(struct ifnet *, int); 152 static int malo_chan_set(struct malo_softc *, struct ieee80211_channel *); 153 static int malo_mode_init(struct malo_softc *); 154 static void malo_tx_proc(void *, int); 155 static void malo_rx_proc(void *, int); 156 static void malo_init(void *); 157 158 /* 159 * Read/Write shorthands for accesses to BAR 0. Note that all BAR 1 160 * operations are done in the "hal" except getting H/W MAC address at 161 * malo_attach and there should be no reference to them here. 162 */ 163 static uint32_t 164 malo_bar0_read4(struct malo_softc *sc, bus_size_t off) 165 { 166 return bus_space_read_4(sc->malo_io0t, sc->malo_io0h, off); 167 } 168 169 static void 170 malo_bar0_write4(struct malo_softc *sc, bus_size_t off, uint32_t val) 171 { 172 DPRINTF(sc, MALO_DEBUG_FW, "%s: off 0x%jx val 0x%x\n", 173 __func__, (intmax_t)off, val); 174 175 bus_space_write_4(sc->malo_io0t, sc->malo_io0h, off, val); 176 } 177 178 int 179 malo_attach(uint16_t devid, struct malo_softc *sc) 180 { 181 int error; 182 struct ieee80211com *ic; 183 struct ifnet *ifp; 184 struct malo_hal *mh; 185 uint8_t bands; 186 187 ifp = sc->malo_ifp = if_alloc(IFT_IEEE80211); 188 if (ifp == NULL) { 189 device_printf(sc->malo_dev, "can not if_alloc()\n"); 190 return ENOSPC; 191 } 192 ic = ifp->if_l2com; 193 194 MALO_LOCK_INIT(sc); 195 callout_init_mtx(&sc->malo_watchdog_timer, &sc->malo_mtx, 0); 196 197 /* set these up early for if_printf use */ 198 if_initname(ifp, device_get_name(sc->malo_dev), 199 device_get_unit(sc->malo_dev)); 200 201 mh = malo_hal_attach(sc->malo_dev, devid, 202 sc->malo_io1h, sc->malo_io1t, sc->malo_dmat); 203 if (mh == NULL) { 204 if_printf(ifp, "unable to attach HAL\n"); 205 error = EIO; 206 goto bad; 207 } 208 sc->malo_mh = mh; 209 210 /* 211 * Load firmware so we can get setup. We arbitrarily pick station 212 * firmware; we'll re-load firmware as needed so setting up 213 * the wrong mode isn't a big deal. 214 */ 215 error = malo_hal_fwload(mh, "malo8335-h", "malo8335-m"); 216 if (error != 0) { 217 if_printf(ifp, "unable to setup firmware\n"); 218 goto bad1; 219 } 220 /* XXX gethwspecs() extracts correct informations? not maybe! */ 221 error = malo_hal_gethwspecs(mh, &sc->malo_hwspecs); 222 if (error != 0) { 223 if_printf(ifp, "unable to fetch h/w specs\n"); 224 goto bad1; 225 } 226 227 DPRINTF(sc, MALO_DEBUG_FW, 228 "malo_hal_gethwspecs: hwversion 0x%x hostif 0x%x" 229 "maxnum_wcb 0x%x maxnum_mcaddr 0x%x maxnum_tx_wcb 0x%x" 230 "regioncode 0x%x num_antenna 0x%x fw_releasenum 0x%x" 231 "wcbbase0 0x%x rxdesc_read 0x%x rxdesc_write 0x%x" 232 "ul_fw_awakecookie 0x%x w[4] = %x %x %x %x", 233 sc->malo_hwspecs.hwversion, 234 sc->malo_hwspecs.hostinterface, sc->malo_hwspecs.maxnum_wcb, 235 sc->malo_hwspecs.maxnum_mcaddr, sc->malo_hwspecs.maxnum_tx_wcb, 236 sc->malo_hwspecs.regioncode, sc->malo_hwspecs.num_antenna, 237 sc->malo_hwspecs.fw_releasenum, sc->malo_hwspecs.wcbbase0, 238 sc->malo_hwspecs.rxdesc_read, sc->malo_hwspecs.rxdesc_write, 239 sc->malo_hwspecs.ul_fw_awakecookie, 240 sc->malo_hwspecs.wcbbase[0], sc->malo_hwspecs.wcbbase[1], 241 sc->malo_hwspecs.wcbbase[2], sc->malo_hwspecs.wcbbase[3]); 242 243 /* NB: firmware looks that it does not export regdomain info API. */ 244 bands = 0; 245 setbit(&bands, IEEE80211_MODE_11B); 246 setbit(&bands, IEEE80211_MODE_11G); 247 ieee80211_init_channels(ic, NULL, &bands); 248 249 sc->malo_txantenna = 0x2; /* h/w default */ 250 sc->malo_rxantenna = 0xffff; /* h/w default */ 251 252 /* 253 * Allocate tx + rx descriptors and populate the lists. 254 * We immediately push the information to the firmware 255 * as otherwise it gets upset. 256 */ 257 error = malo_dma_setup(sc); 258 if (error != 0) { 259 if_printf(ifp, "failed to setup descriptors: %d\n", error); 260 goto bad1; 261 } 262 error = malo_setup_hwdma(sc); /* push to firmware */ 263 if (error != 0) /* NB: malo_setupdma prints msg */ 264 goto bad2; 265 266 sc->malo_tq = taskqueue_create_fast("malo_taskq", M_NOWAIT, 267 taskqueue_thread_enqueue, &sc->malo_tq); 268 taskqueue_start_threads(&sc->malo_tq, 1, PI_NET, 269 "%s taskq", ifp->if_xname); 270 271 TASK_INIT(&sc->malo_rxtask, 0, malo_rx_proc, sc); 272 TASK_INIT(&sc->malo_txtask, 0, malo_tx_proc, sc); 273 274 ifp->if_softc = sc; 275 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 276 ifp->if_start = malo_start; 277 ifp->if_ioctl = malo_ioctl; 278 ifp->if_init = malo_init; 279 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 280 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 281 IFQ_SET_READY(&ifp->if_snd); 282 283 ic->ic_ifp = ifp; 284 /* XXX not right but it's not used anywhere important */ 285 ic->ic_phytype = IEEE80211_T_OFDM; 286 ic->ic_opmode = IEEE80211_M_STA; 287 ic->ic_caps = 288 IEEE80211_C_STA /* station mode supported */ 289 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 290 | IEEE80211_C_MONITOR /* monitor mode */ 291 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 292 | IEEE80211_C_SHSLOT /* short slot time supported */ 293 | IEEE80211_C_TXPMGT /* capable of txpow mgt */ 294 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 295 ; 296 297 /* 298 * Transmit requires space in the packet for a special format transmit 299 * record and optional padding between this record and the payload. 300 * Ask the net80211 layer to arrange this when encapsulating 301 * packets so we can add it efficiently. 302 */ 303 ic->ic_headroom = sizeof(struct malo_txrec) - 304 sizeof(struct ieee80211_frame); 305 306 /* call MI attach routine. */ 307 ieee80211_ifattach(ic, sc->malo_hwspecs.macaddr); 308 /* override default methods */ 309 ic->ic_vap_create = malo_vap_create; 310 ic->ic_vap_delete = malo_vap_delete; 311 ic->ic_raw_xmit = malo_raw_xmit; 312 ic->ic_updateslot = malo_updateslot; 313 314 ic->ic_scan_start = malo_scan_start; 315 ic->ic_scan_end = malo_scan_end; 316 ic->ic_set_channel = malo_set_channel; 317 318 sc->malo_invalid = 0; /* ready to go, enable int handling */ 319 320 ieee80211_radiotap_attach(ic, 321 &sc->malo_tx_th.wt_ihdr, sizeof(sc->malo_tx_th), 322 MALO_TX_RADIOTAP_PRESENT, 323 &sc->malo_rx_th.wr_ihdr, sizeof(sc->malo_rx_th), 324 MALO_RX_RADIOTAP_PRESENT); 325 326 /* 327 * Setup dynamic sysctl's. 328 */ 329 malo_sysctlattach(sc); 330 331 if (bootverbose) 332 ieee80211_announce(ic); 333 malo_announce(sc); 334 335 return 0; 336 bad2: 337 malo_dma_cleanup(sc); 338 bad1: 339 malo_hal_detach(mh); 340 bad: 341 if_free(ifp); 342 sc->malo_invalid = 1; 343 344 return error; 345 } 346 347 static struct ieee80211vap * 348 malo_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 349 enum ieee80211_opmode opmode, int flags, 350 const uint8_t bssid[IEEE80211_ADDR_LEN], 351 const uint8_t mac[IEEE80211_ADDR_LEN]) 352 { 353 struct ifnet *ifp = ic->ic_ifp; 354 struct malo_vap *mvp; 355 struct ieee80211vap *vap; 356 357 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 358 if_printf(ifp, "multiple vaps not supported\n"); 359 return NULL; 360 } 361 switch (opmode) { 362 case IEEE80211_M_STA: 363 if (opmode == IEEE80211_M_STA) 364 flags |= IEEE80211_CLONE_NOBEACONS; 365 /* fall thru... */ 366 case IEEE80211_M_MONITOR: 367 break; 368 default: 369 if_printf(ifp, "%s mode not supported\n", 370 ieee80211_opmode_name[opmode]); 371 return NULL; /* unsupported */ 372 } 373 mvp = (struct malo_vap *) malloc(sizeof(struct malo_vap), 374 M_80211_VAP, M_NOWAIT | M_ZERO); 375 if (mvp == NULL) { 376 if_printf(ifp, "cannot allocate vap state block\n"); 377 return NULL; 378 } 379 vap = &mvp->malo_vap; 380 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 381 382 /* override state transition machine */ 383 mvp->malo_newstate = vap->iv_newstate; 384 vap->iv_newstate = malo_newstate; 385 386 /* complete setup */ 387 ieee80211_vap_attach(vap, 388 ieee80211_media_change, ieee80211_media_status); 389 ic->ic_opmode = opmode; 390 return vap; 391 } 392 393 static void 394 malo_vap_delete(struct ieee80211vap *vap) 395 { 396 struct malo_vap *mvp = MALO_VAP(vap); 397 398 ieee80211_vap_detach(vap); 399 free(mvp, M_80211_VAP); 400 } 401 402 int 403 malo_intr(void *arg) 404 { 405 struct malo_softc *sc = arg; 406 struct malo_hal *mh = sc->malo_mh; 407 uint32_t status; 408 409 if (sc->malo_invalid) { 410 /* 411 * The hardware is not ready/present, don't touch anything. 412 * Note this can happen early on if the IRQ is shared. 413 */ 414 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid; ignored\n", __func__); 415 return (FILTER_STRAY); 416 } 417 418 /* 419 * Figure out the reason(s) for the interrupt. 420 */ 421 malo_hal_getisr(mh, &status); /* NB: clears ISR too */ 422 if (status == 0) /* must be a shared irq */ 423 return (FILTER_STRAY); 424 425 DPRINTF(sc, MALO_DEBUG_INTR, "%s: status 0x%x imask 0x%x\n", 426 __func__, status, sc->malo_imask); 427 428 if (status & MALO_A2HRIC_BIT_RX_RDY) 429 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_rxtask); 430 if (status & MALO_A2HRIC_BIT_TX_DONE) 431 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_txtask); 432 if (status & MALO_A2HRIC_BIT_OPC_DONE) 433 malo_hal_cmddone(mh); 434 if (status & MALO_A2HRIC_BIT_MAC_EVENT) 435 ; 436 if (status & MALO_A2HRIC_BIT_RX_PROBLEM) 437 ; 438 if (status & MALO_A2HRIC_BIT_ICV_ERROR) { 439 /* TKIP ICV error */ 440 sc->malo_stats.mst_rx_badtkipicv++; 441 } 442 #ifdef MALO_DEBUG 443 if (((status | sc->malo_imask) ^ sc->malo_imask) != 0) 444 DPRINTF(sc, MALO_DEBUG_INTR, 445 "%s: can't handle interrupt status 0x%x\n", 446 __func__, status); 447 #endif 448 return (FILTER_HANDLED); 449 } 450 451 static void 452 malo_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 453 { 454 bus_addr_t *paddr = (bus_addr_t*) arg; 455 456 KASSERT(error == 0, ("error %u on bus_dma callback", error)); 457 458 *paddr = segs->ds_addr; 459 } 460 461 static int 462 malo_desc_setup(struct malo_softc *sc, const char *name, 463 struct malo_descdma *dd, 464 int nbuf, size_t bufsize, int ndesc, size_t descsize) 465 { 466 int error; 467 struct ifnet *ifp = sc->malo_ifp; 468 uint8_t *ds; 469 470 DPRINTF(sc, MALO_DEBUG_RESET, 471 "%s: %s DMA: %u bufs (%ju) %u desc/buf (%ju)\n", 472 __func__, name, nbuf, (uintmax_t) bufsize, 473 ndesc, (uintmax_t) descsize); 474 475 dd->dd_name = name; 476 dd->dd_desc_len = nbuf * ndesc * descsize; 477 478 /* 479 * Setup DMA descriptor area. 480 */ 481 error = bus_dma_tag_create(bus_get_dma_tag(sc->malo_dev),/* parent */ 482 PAGE_SIZE, 0, /* alignment, bounds */ 483 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 484 BUS_SPACE_MAXADDR, /* highaddr */ 485 NULL, NULL, /* filter, filterarg */ 486 dd->dd_desc_len, /* maxsize */ 487 1, /* nsegments */ 488 dd->dd_desc_len, /* maxsegsize */ 489 BUS_DMA_ALLOCNOW, /* flags */ 490 NULL, /* lockfunc */ 491 NULL, /* lockarg */ 492 &dd->dd_dmat); 493 if (error != 0) { 494 if_printf(ifp, "cannot allocate %s DMA tag\n", dd->dd_name); 495 return error; 496 } 497 498 /* allocate descriptors */ 499 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc, 500 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dd->dd_dmamap); 501 if (error != 0) { 502 if_printf(ifp, "unable to alloc memory for %u %s descriptors, " 503 "error %u\n", nbuf * ndesc, dd->dd_name, error); 504 goto fail1; 505 } 506 507 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap, 508 dd->dd_desc, dd->dd_desc_len, 509 malo_load_cb, &dd->dd_desc_paddr, BUS_DMA_NOWAIT); 510 if (error != 0) { 511 if_printf(ifp, "unable to map %s descriptors, error %u\n", 512 dd->dd_name, error); 513 goto fail2; 514 } 515 516 ds = dd->dd_desc; 517 memset(ds, 0, dd->dd_desc_len); 518 DPRINTF(sc, MALO_DEBUG_RESET, "%s: %s DMA map: %p (%lu) -> %p (%lu)\n", 519 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len, 520 (caddr_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len); 521 522 return 0; 523 fail2: 524 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 525 fail1: 526 bus_dma_tag_destroy(dd->dd_dmat); 527 memset(dd, 0, sizeof(*dd)); 528 return error; 529 } 530 531 #define DS2PHYS(_dd, _ds) \ 532 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 533 534 static int 535 malo_rxdma_setup(struct malo_softc *sc) 536 { 537 struct ifnet *ifp = sc->malo_ifp; 538 int error, bsize, i; 539 struct malo_rxbuf *bf; 540 struct malo_rxdesc *ds; 541 542 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma, 543 malo_rxbuf, sizeof(struct malo_rxbuf), 544 1, sizeof(struct malo_rxdesc)); 545 if (error != 0) 546 return error; 547 548 /* 549 * Allocate rx buffers and set them up. 550 */ 551 bsize = malo_rxbuf * sizeof(struct malo_rxbuf); 552 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 553 if (bf == NULL) { 554 if_printf(ifp, "malloc of %u rx buffers failed\n", bsize); 555 return error; 556 } 557 sc->malo_rxdma.dd_bufptr = bf; 558 559 STAILQ_INIT(&sc->malo_rxbuf); 560 ds = sc->malo_rxdma.dd_desc; 561 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) { 562 bf->bf_desc = ds; 563 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds); 564 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 565 &bf->bf_dmamap); 566 if (error != 0) { 567 if_printf(ifp, "%s: unable to dmamap for rx buffer, " 568 "error %d\n", __func__, error); 569 return error; 570 } 571 /* NB: tail is intentional to preserve descriptor order */ 572 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list); 573 } 574 return 0; 575 } 576 577 static int 578 malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq) 579 { 580 struct ifnet *ifp = sc->malo_ifp; 581 int error, bsize, i; 582 struct malo_txbuf *bf; 583 struct malo_txdesc *ds; 584 585 error = malo_desc_setup(sc, "tx", &txq->dma, 586 malo_txbuf, sizeof(struct malo_txbuf), 587 MALO_TXDESC, sizeof(struct malo_txdesc)); 588 if (error != 0) 589 return error; 590 591 /* allocate and setup tx buffers */ 592 bsize = malo_txbuf * sizeof(struct malo_txbuf); 593 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 594 if (bf == NULL) { 595 if_printf(ifp, "malloc of %u tx buffers failed\n", 596 malo_txbuf); 597 return ENOMEM; 598 } 599 txq->dma.dd_bufptr = bf; 600 601 STAILQ_INIT(&txq->free); 602 txq->nfree = 0; 603 ds = txq->dma.dd_desc; 604 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) { 605 bf->bf_desc = ds; 606 bf->bf_daddr = DS2PHYS(&txq->dma, ds); 607 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 608 &bf->bf_dmamap); 609 if (error != 0) { 610 if_printf(ifp, "unable to create dmamap for tx " 611 "buffer %u, error %u\n", i, error); 612 return error; 613 } 614 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 615 txq->nfree++; 616 } 617 618 return 0; 619 } 620 621 static void 622 malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd) 623 { 624 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap); 625 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 626 bus_dma_tag_destroy(dd->dd_dmat); 627 628 memset(dd, 0, sizeof(*dd)); 629 } 630 631 static void 632 malo_rxdma_cleanup(struct malo_softc *sc) 633 { 634 struct malo_rxbuf *bf; 635 636 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 637 if (bf->bf_m != NULL) { 638 m_freem(bf->bf_m); 639 bf->bf_m = NULL; 640 } 641 if (bf->bf_dmamap != NULL) { 642 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 643 bf->bf_dmamap = NULL; 644 } 645 } 646 STAILQ_INIT(&sc->malo_rxbuf); 647 if (sc->malo_rxdma.dd_bufptr != NULL) { 648 free(sc->malo_rxdma.dd_bufptr, M_MALODEV); 649 sc->malo_rxdma.dd_bufptr = NULL; 650 } 651 if (sc->malo_rxdma.dd_desc_len != 0) 652 malo_desc_cleanup(sc, &sc->malo_rxdma); 653 } 654 655 static void 656 malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq) 657 { 658 struct malo_txbuf *bf; 659 struct ieee80211_node *ni; 660 661 STAILQ_FOREACH(bf, &txq->free, bf_list) { 662 if (bf->bf_m != NULL) { 663 m_freem(bf->bf_m); 664 bf->bf_m = NULL; 665 } 666 ni = bf->bf_node; 667 bf->bf_node = NULL; 668 if (ni != NULL) { 669 /* 670 * Reclaim node reference. 671 */ 672 ieee80211_free_node(ni); 673 } 674 if (bf->bf_dmamap != NULL) { 675 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 676 bf->bf_dmamap = NULL; 677 } 678 } 679 STAILQ_INIT(&txq->free); 680 txq->nfree = 0; 681 if (txq->dma.dd_bufptr != NULL) { 682 free(txq->dma.dd_bufptr, M_MALODEV); 683 txq->dma.dd_bufptr = NULL; 684 } 685 if (txq->dma.dd_desc_len != 0) 686 malo_desc_cleanup(sc, &txq->dma); 687 } 688 689 static void 690 malo_dma_cleanup(struct malo_softc *sc) 691 { 692 int i; 693 694 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 695 malo_txdma_cleanup(sc, &sc->malo_txq[i]); 696 697 malo_rxdma_cleanup(sc); 698 } 699 700 static int 701 malo_dma_setup(struct malo_softc *sc) 702 { 703 int error, i; 704 705 /* rxdma initializing. */ 706 error = malo_rxdma_setup(sc); 707 if (error != 0) 708 return error; 709 710 /* NB: we just have 1 tx queue now. */ 711 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 712 error = malo_txdma_setup(sc, &sc->malo_txq[i]); 713 if (error != 0) { 714 malo_dma_cleanup(sc); 715 716 return error; 717 } 718 719 malo_txq_init(sc, &sc->malo_txq[i], i); 720 } 721 722 return 0; 723 } 724 725 static void 726 malo_hal_set_rxtxdma(struct malo_softc *sc) 727 { 728 int i; 729 730 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, 731 sc->malo_hwdma.rxdesc_read); 732 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write, 733 sc->malo_hwdma.rxdesc_read); 734 735 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 736 malo_bar0_write4(sc, 737 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]); 738 } 739 } 740 741 /* 742 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are 743 * for compatibility with older firmware. For current firmware we send 744 * this information with a cmd block via malo_hal_sethwdma. 745 */ 746 static int 747 malo_setup_hwdma(struct malo_softc *sc) 748 { 749 int i; 750 struct malo_txq *txq; 751 752 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr; 753 754 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 755 txq = &sc->malo_txq[i]; 756 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr; 757 } 758 sc->malo_hwdma.maxnum_txwcb = malo_txbuf; 759 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES; 760 761 malo_hal_set_rxtxdma(sc); 762 763 return 0; 764 } 765 766 static void 767 malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum) 768 { 769 struct malo_txbuf *bf, *bn; 770 struct malo_txdesc *ds; 771 772 MALO_TXQ_LOCK_INIT(sc, txq); 773 txq->qnum = qnum; 774 txq->txpri = 0; /* XXX */ 775 776 STAILQ_FOREACH(bf, &txq->free, bf_list) { 777 bf->bf_txq = txq; 778 779 ds = bf->bf_desc; 780 bn = STAILQ_NEXT(bf, bf_list); 781 if (bn == NULL) 782 bn = STAILQ_FIRST(&txq->free); 783 ds->physnext = htole32(bn->bf_daddr); 784 } 785 STAILQ_INIT(&txq->active); 786 } 787 788 /* 789 * Reclaim resources for a setup queue. 790 */ 791 static void 792 malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq) 793 { 794 /* XXX hal work? */ 795 MALO_TXQ_LOCK_DESTROY(txq); 796 } 797 798 /* 799 * Allocate a tx buffer for sending a frame. 800 */ 801 static struct malo_txbuf * 802 malo_getbuf(struct malo_softc *sc, struct malo_txq *txq) 803 { 804 struct malo_txbuf *bf; 805 806 MALO_TXQ_LOCK(txq); 807 bf = STAILQ_FIRST(&txq->free); 808 if (bf != NULL) { 809 STAILQ_REMOVE_HEAD(&txq->free, bf_list); 810 txq->nfree--; 811 } 812 MALO_TXQ_UNLOCK(txq); 813 if (bf == NULL) { 814 DPRINTF(sc, MALO_DEBUG_XMIT, 815 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum); 816 sc->malo_stats.mst_tx_qstop++; 817 } 818 return bf; 819 } 820 821 static int 822 malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0) 823 { 824 struct mbuf *m; 825 int error; 826 827 /* 828 * Load the DMA map so any coalescing is done. This also calculates 829 * the number of descriptors we need. 830 */ 831 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 832 bf->bf_segs, &bf->bf_nseg, 833 BUS_DMA_NOWAIT); 834 if (error == EFBIG) { 835 /* XXX packet requires too many descriptors */ 836 bf->bf_nseg = MALO_TXDESC + 1; 837 } else if (error != 0) { 838 sc->malo_stats.mst_tx_busdma++; 839 m_freem(m0); 840 return error; 841 } 842 /* 843 * Discard null packets and check for packets that require too many 844 * TX descriptors. We try to convert the latter to a cluster. 845 */ 846 if (error == EFBIG) { /* too many desc's, linearize */ 847 sc->malo_stats.mst_tx_linear++; 848 m = m_defrag(m0, M_NOWAIT); 849 if (m == NULL) { 850 m_freem(m0); 851 sc->malo_stats.mst_tx_nombuf++; 852 return ENOMEM; 853 } 854 m0 = m; 855 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 856 bf->bf_segs, &bf->bf_nseg, 857 BUS_DMA_NOWAIT); 858 if (error != 0) { 859 sc->malo_stats.mst_tx_busdma++; 860 m_freem(m0); 861 return error; 862 } 863 KASSERT(bf->bf_nseg <= MALO_TXDESC, 864 ("too many segments after defrag; nseg %u", bf->bf_nseg)); 865 } else if (bf->bf_nseg == 0) { /* null packet, discard */ 866 sc->malo_stats.mst_tx_nodata++; 867 m_freem(m0); 868 return EIO; 869 } 870 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n", 871 __func__, m0, m0->m_pkthdr.len); 872 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 873 bf->bf_m = m0; 874 875 return 0; 876 } 877 878 #ifdef MALO_DEBUG 879 static void 880 malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix) 881 { 882 const struct malo_rxdesc *ds = bf->bf_desc; 883 uint32_t status = le32toh(ds->status); 884 885 printf("R[%2u] (DS.V:%p DS.P:%p) NEXT:%08x DATA:%08x RC:%02x%s\n" 886 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x" 887 " RATE:%02x QOS:%04x\n", 888 ix, ds, (const struct malo_desc *)bf->bf_daddr, 889 le32toh(ds->physnext), le32toh(ds->physbuffdata), 890 ds->rxcontrol, 891 ds->rxcontrol != MALO_RXD_CTRL_DRIVER_OWN ? 892 "" : (status & MALO_RXD_STATUS_OK) ? " *" : " !", 893 ds->status, le16toh(ds->pktlen), ds->snr, ds->nf, ds->channel, 894 ds->rate, le16toh(ds->qosctrl)); 895 } 896 897 static void 898 malo_printtxbuf(const struct malo_txbuf *bf, u_int qnum, u_int ix) 899 { 900 const struct malo_txdesc *ds = bf->bf_desc; 901 uint32_t status = le32toh(ds->status); 902 903 printf("Q%u[%3u]", qnum, ix); 904 printf(" (DS.V:%p DS.P:%p)\n", 905 ds, (const struct malo_txdesc *)bf->bf_daddr); 906 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n", 907 le32toh(ds->physnext), 908 le32toh(ds->pktptr), le16toh(ds->pktlen), status, 909 status & MALO_TXD_STATUS_USED ? 910 "" : (status & 3) != 0 ? " *" : " !"); 911 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n", 912 ds->datarate, ds->txpriority, le16toh(ds->qosctrl), 913 le32toh(ds->sap_pktinfo), le16toh(ds->format)); 914 #if 0 915 { 916 const uint8_t *cp = (const uint8_t *) ds; 917 int i; 918 for (i = 0; i < sizeof(struct malo_txdesc); i++) { 919 printf("%02x ", cp[i]); 920 if (((i+1) % 16) == 0) 921 printf("\n"); 922 } 923 printf("\n"); 924 } 925 #endif 926 } 927 #endif /* MALO_DEBUG */ 928 929 static __inline void 930 malo_updatetxrate(struct ieee80211_node *ni, int rix) 931 { 932 #define N(x) (sizeof(x)/sizeof(x[0])) 933 static const int ieeerates[] = 934 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 }; 935 if (rix < N(ieeerates)) 936 ni->ni_txrate = ieeerates[rix]; 937 #undef N 938 } 939 940 static int 941 malo_fix2rate(int fix_rate) 942 { 943 #define N(x) (sizeof(x)/sizeof(x[0])) 944 static const int rates[] = 945 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 }; 946 return (fix_rate < N(rates) ? rates[fix_rate] : 0); 947 #undef N 948 } 949 950 /* idiomatic shorthands: MS = mask+shift, SM = shift+mask */ 951 #define MS(v,x) (((v) & x) >> x##_S) 952 #define SM(v,x) (((v) << x##_S) & x) 953 954 /* 955 * Process completed xmit descriptors from the specified queue. 956 */ 957 static int 958 malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq) 959 { 960 struct malo_txbuf *bf; 961 struct malo_txdesc *ds; 962 struct ieee80211_node *ni; 963 int nreaped; 964 uint32_t status; 965 966 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n", 967 __func__, txq->qnum); 968 for (nreaped = 0;; nreaped++) { 969 MALO_TXQ_LOCK(txq); 970 bf = STAILQ_FIRST(&txq->active); 971 if (bf == NULL) { 972 MALO_TXQ_UNLOCK(txq); 973 break; 974 } 975 ds = bf->bf_desc; 976 MALO_TXDESC_SYNC(txq, ds, 977 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 978 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) { 979 MALO_TXQ_UNLOCK(txq); 980 break; 981 } 982 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 983 MALO_TXQ_UNLOCK(txq); 984 985 #ifdef MALO_DEBUG 986 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC) 987 malo_printtxbuf(bf, txq->qnum, nreaped); 988 #endif 989 ni = bf->bf_node; 990 if (ni != NULL) { 991 status = le32toh(ds->status); 992 if (status & MALO_TXD_STATUS_OK) { 993 uint16_t format = le16toh(ds->format); 994 uint8_t txant = MS(format, MALO_TXD_ANTENNA); 995 996 sc->malo_stats.mst_ant_tx[txant]++; 997 if (status & MALO_TXD_STATUS_OK_RETRY) 998 sc->malo_stats.mst_tx_retries++; 999 if (status & MALO_TXD_STATUS_OK_MORE_RETRY) 1000 sc->malo_stats.mst_tx_mretries++; 1001 malo_updatetxrate(ni, ds->datarate); 1002 sc->malo_stats.mst_tx_rate = ds->datarate; 1003 } else { 1004 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR) 1005 sc->malo_stats.mst_tx_linkerror++; 1006 if (status & MALO_TXD_STATUS_FAILED_XRETRY) 1007 sc->malo_stats.mst_tx_xretries++; 1008 if (status & MALO_TXD_STATUS_FAILED_AGING) 1009 sc->malo_stats.mst_tx_aging++; 1010 } 1011 /* 1012 * Do any tx complete callback. Note this must 1013 * be done before releasing the node reference. 1014 * XXX no way to figure out if frame was ACK'd 1015 */ 1016 if (bf->bf_m->m_flags & M_TXCB) { 1017 /* XXX strip fw len in case header inspected */ 1018 m_adj(bf->bf_m, sizeof(uint16_t)); 1019 ieee80211_process_callback(ni, bf->bf_m, 1020 (status & MALO_TXD_STATUS_OK) == 0); 1021 } 1022 /* 1023 * Reclaim reference to node. 1024 * 1025 * NB: the node may be reclaimed here if, for example 1026 * this is a DEAUTH message that was sent and the 1027 * node was timed out due to inactivity. 1028 */ 1029 ieee80211_free_node(ni); 1030 } 1031 ds->status = htole32(MALO_TXD_STATUS_IDLE); 1032 ds->pktlen = htole32(0); 1033 1034 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 1035 BUS_DMASYNC_POSTWRITE); 1036 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1037 m_freem(bf->bf_m); 1038 bf->bf_m = NULL; 1039 bf->bf_node = NULL; 1040 1041 MALO_TXQ_LOCK(txq); 1042 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1043 txq->nfree++; 1044 MALO_TXQ_UNLOCK(txq); 1045 } 1046 return nreaped; 1047 } 1048 1049 /* 1050 * Deferred processing of transmit interrupt. 1051 */ 1052 static void 1053 malo_tx_proc(void *arg, int npending) 1054 { 1055 struct malo_softc *sc = arg; 1056 struct ifnet *ifp = sc->malo_ifp; 1057 int i, nreaped; 1058 1059 /* 1060 * Process each active queue. 1061 */ 1062 nreaped = 0; 1063 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 1064 if (!STAILQ_EMPTY(&sc->malo_txq[i].active)) 1065 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]); 1066 } 1067 1068 if (nreaped != 0) { 1069 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1070 sc->malo_timer = 0; 1071 malo_start(ifp); 1072 } 1073 } 1074 1075 static int 1076 malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni, 1077 struct malo_txbuf *bf, struct mbuf *m0) 1078 { 1079 #define IEEE80211_DIR_DSTODS(wh) \ 1080 ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 1081 #define IS_DATA_FRAME(wh) \ 1082 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA) 1083 int error, ismcast, iswep; 1084 int copyhdrlen, hdrlen, pktlen; 1085 struct ieee80211_frame *wh; 1086 struct ifnet *ifp = sc->malo_ifp; 1087 struct ieee80211com *ic = ifp->if_l2com; 1088 struct ieee80211vap *vap = ni->ni_vap; 1089 struct malo_txdesc *ds; 1090 struct malo_txrec *tr; 1091 struct malo_txq *txq; 1092 uint16_t qos; 1093 1094 wh = mtod(m0, struct ieee80211_frame *); 1095 iswep = wh->i_fc[1] & IEEE80211_FC1_PROTECTED; 1096 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1097 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh); 1098 pktlen = m0->m_pkthdr.len; 1099 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1100 if (IEEE80211_DIR_DSTODS(wh)) { 1101 qos = *(uint16_t *) 1102 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos); 1103 copyhdrlen -= sizeof(qos); 1104 } else 1105 qos = *(uint16_t *) 1106 (((struct ieee80211_qosframe *) wh)->i_qos); 1107 } else 1108 qos = 0; 1109 1110 if (iswep) { 1111 struct ieee80211_key *k; 1112 1113 /* 1114 * Construct the 802.11 header+trailer for an encrypted 1115 * frame. The only reason this can fail is because of an 1116 * unknown or unsupported cipher/key type. 1117 * 1118 * NB: we do this even though the firmware will ignore 1119 * what we've done for WEP and TKIP as we need the 1120 * ExtIV filled in for CCMP and this also adjusts 1121 * the headers which simplifies our work below. 1122 */ 1123 k = ieee80211_crypto_encap(ni, m0); 1124 if (k == NULL) { 1125 /* 1126 * This can happen when the key is yanked after the 1127 * frame was queued. Just discard the frame; the 1128 * 802.11 layer counts failures and provides 1129 * debugging/diagnostics. 1130 */ 1131 m_freem(m0); 1132 return EIO; 1133 } 1134 1135 /* 1136 * Adjust the packet length for the crypto additions 1137 * done during encap and any other bits that the f/w 1138 * will add later on. 1139 */ 1140 pktlen = m0->m_pkthdr.len; 1141 1142 /* packet header may have moved, reset our local pointer */ 1143 wh = mtod(m0, struct ieee80211_frame *); 1144 } 1145 1146 if (ieee80211_radiotap_active_vap(vap)) { 1147 sc->malo_tx_th.wt_flags = 0; /* XXX */ 1148 if (iswep) 1149 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1150 sc->malo_tx_th.wt_txpower = ni->ni_txpower; 1151 sc->malo_tx_th.wt_antenna = sc->malo_txantenna; 1152 1153 ieee80211_radiotap_tx(vap, m0); 1154 } 1155 1156 /* 1157 * Copy up/down the 802.11 header; the firmware requires 1158 * we present a 2-byte payload length followed by a 1159 * 4-address header (w/o QoS), followed (optionally) by 1160 * any WEP/ExtIV header (but only filled in for CCMP). 1161 * We are assured the mbuf has sufficient headroom to 1162 * prepend in-place by the setup of ic_headroom in 1163 * malo_attach. 1164 */ 1165 if (hdrlen < sizeof(struct malo_txrec)) { 1166 const int space = sizeof(struct malo_txrec) - hdrlen; 1167 if (M_LEADINGSPACE(m0) < space) { 1168 /* NB: should never happen */ 1169 device_printf(sc->malo_dev, 1170 "not enough headroom, need %d found %zd, " 1171 "m_flags 0x%x m_len %d\n", 1172 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len); 1173 ieee80211_dump_pkt(ic, 1174 mtod(m0, const uint8_t *), m0->m_len, 0, -1); 1175 m_freem(m0); 1176 /* XXX stat */ 1177 return EIO; 1178 } 1179 M_PREPEND(m0, space, M_NOWAIT); 1180 } 1181 tr = mtod(m0, struct malo_txrec *); 1182 if (wh != (struct ieee80211_frame *) &tr->wh) 1183 ovbcopy(wh, &tr->wh, hdrlen); 1184 /* 1185 * Note: the "firmware length" is actually the length of the fully 1186 * formed "802.11 payload". That is, it's everything except for 1187 * the 802.11 header. In particular this includes all crypto 1188 * material including the MIC! 1189 */ 1190 tr->fwlen = htole16(pktlen - hdrlen); 1191 1192 /* 1193 * Load the DMA map so any coalescing is done. This 1194 * also calculates the number of descriptors we need. 1195 */ 1196 error = malo_tx_dmasetup(sc, bf, m0); 1197 if (error != 0) 1198 return error; 1199 bf->bf_node = ni; /* NB: held reference */ 1200 m0 = bf->bf_m; /* NB: may have changed */ 1201 tr = mtod(m0, struct malo_txrec *); 1202 wh = (struct ieee80211_frame *)&tr->wh; 1203 1204 /* 1205 * Formulate tx descriptor. 1206 */ 1207 ds = bf->bf_desc; 1208 txq = bf->bf_txq; 1209 1210 ds->qosctrl = qos; /* NB: already little-endian */ 1211 ds->pktptr = htole32(bf->bf_segs[0].ds_addr); 1212 ds->pktlen = htole16(bf->bf_segs[0].ds_len); 1213 /* NB: pPhysNext setup once, don't touch */ 1214 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0; 1215 ds->sap_pktinfo = 0; 1216 ds->format = 0; 1217 1218 /* 1219 * Select transmit rate. 1220 */ 1221 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 1222 case IEEE80211_FC0_TYPE_MGT: 1223 sc->malo_stats.mst_tx_mgmt++; 1224 /* fall thru... */ 1225 case IEEE80211_FC0_TYPE_CTL: 1226 ds->txpriority = 1; 1227 break; 1228 case IEEE80211_FC0_TYPE_DATA: 1229 ds->txpriority = txq->qnum; 1230 break; 1231 default: 1232 if_printf(ifp, "bogus frame type 0x%x (%s)\n", 1233 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__); 1234 /* XXX statistic */ 1235 m_freem(m0); 1236 return EIO; 1237 } 1238 1239 #ifdef MALO_DEBUG 1240 if (IFF_DUMPPKTS_XMIT(sc)) 1241 ieee80211_dump_pkt(ic, 1242 mtod(m0, const uint8_t *)+sizeof(uint16_t), 1243 m0->m_len - sizeof(uint16_t), ds->datarate, -1); 1244 #endif 1245 1246 MALO_TXQ_LOCK(txq); 1247 if (!IS_DATA_FRAME(wh)) 1248 ds->status |= htole32(1); 1249 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED); 1250 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list); 1251 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1252 1253 ifp->if_opackets++; 1254 sc->malo_timer = 5; 1255 MALO_TXQ_UNLOCK(txq); 1256 return 0; 1257 #undef IEEE80211_DIR_DSTODS 1258 } 1259 1260 static void 1261 malo_start(struct ifnet *ifp) 1262 { 1263 struct malo_softc *sc = ifp->if_softc; 1264 struct ieee80211_node *ni; 1265 struct malo_txq *txq = &sc->malo_txq[0]; 1266 struct malo_txbuf *bf = NULL; 1267 struct mbuf *m; 1268 int nqueued = 0; 1269 1270 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) 1271 return; 1272 1273 for (;;) { 1274 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1275 if (m == NULL) 1276 break; 1277 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1278 bf = malo_getbuf(sc, txq); 1279 if (bf == NULL) { 1280 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1281 1282 /* XXX blocks other traffic */ 1283 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1284 sc->malo_stats.mst_tx_qstop++; 1285 break; 1286 } 1287 /* 1288 * Pass the frame to the h/w for transmission. 1289 */ 1290 if (malo_tx_start(sc, ni, bf, m)) { 1291 ifp->if_oerrors++; 1292 if (bf != NULL) { 1293 bf->bf_m = NULL; 1294 bf->bf_node = NULL; 1295 MALO_TXQ_LOCK(txq); 1296 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1297 MALO_TXQ_UNLOCK(txq); 1298 } 1299 ieee80211_free_node(ni); 1300 continue; 1301 } 1302 nqueued++; 1303 1304 if (nqueued >= malo_txcoalesce) { 1305 /* 1306 * Poke the firmware to process queued frames; 1307 * see below about (lack of) locking. 1308 */ 1309 nqueued = 0; 1310 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1311 } 1312 } 1313 1314 if (nqueued) { 1315 /* 1316 * NB: We don't need to lock against tx done because 1317 * this just prods the firmware to check the transmit 1318 * descriptors. The firmware will also start fetching 1319 * descriptors by itself if it notices new ones are 1320 * present when it goes to deliver a tx done interrupt 1321 * to the host. So if we race with tx done processing 1322 * it's ok. Delivering the kick here rather than in 1323 * malo_tx_start is an optimization to avoid poking the 1324 * firmware for each packet. 1325 * 1326 * NB: the queue id isn't used so 0 is ok. 1327 */ 1328 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1329 } 1330 } 1331 1332 static void 1333 malo_watchdog(void *arg) 1334 { 1335 struct malo_softc *sc; 1336 struct ifnet *ifp; 1337 1338 sc = arg; 1339 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1340 if (sc->malo_timer == 0 || --sc->malo_timer > 0) 1341 return; 1342 1343 ifp = sc->malo_ifp; 1344 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->malo_invalid) { 1345 if_printf(ifp, "watchdog timeout\n"); 1346 1347 /* XXX no way to reset h/w. now */ 1348 1349 ifp->if_oerrors++; 1350 sc->malo_stats.mst_watchdog++; 1351 } 1352 } 1353 1354 static int 1355 malo_hal_reset(struct malo_softc *sc) 1356 { 1357 static int first = 0; 1358 struct ifnet *ifp = sc->malo_ifp; 1359 struct ieee80211com *ic = ifp->if_l2com; 1360 struct malo_hal *mh = sc->malo_mh; 1361 1362 if (first == 0) { 1363 /* 1364 * NB: when the device firstly is initialized, sometimes 1365 * firmware could override rx/tx dma registers so we re-set 1366 * these values once. 1367 */ 1368 malo_hal_set_rxtxdma(sc); 1369 first = 1; 1370 } 1371 1372 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna); 1373 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna); 1374 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE); 1375 malo_chan_set(sc, ic->ic_curchan); 1376 1377 /* XXX needs other stuffs? */ 1378 1379 return 1; 1380 } 1381 1382 static __inline struct mbuf * 1383 malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf) 1384 { 1385 struct mbuf *m; 1386 bus_addr_t paddr; 1387 int error; 1388 1389 /* XXX don't need mbuf, just dma buffer */ 1390 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1391 if (m == NULL) { 1392 sc->malo_stats.mst_rx_nombuf++; /* XXX */ 1393 return NULL; 1394 } 1395 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap, 1396 mtod(m, caddr_t), MJUMPAGESIZE, 1397 malo_load_cb, &paddr, BUS_DMA_NOWAIT); 1398 if (error != 0) { 1399 if_printf(sc->malo_ifp, 1400 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1401 m_freem(m); 1402 return NULL; 1403 } 1404 bf->bf_data = paddr; 1405 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 1406 1407 return m; 1408 } 1409 1410 static int 1411 malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf) 1412 { 1413 struct malo_rxdesc *ds; 1414 1415 ds = bf->bf_desc; 1416 if (bf->bf_m == NULL) { 1417 bf->bf_m = malo_getrxmbuf(sc, bf); 1418 if (bf->bf_m == NULL) { 1419 /* mark descriptor to be skipped */ 1420 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN; 1421 /* NB: don't need PREREAD */ 1422 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE); 1423 return ENOMEM; 1424 } 1425 } 1426 1427 /* 1428 * Setup descriptor. 1429 */ 1430 ds->qosctrl = 0; 1431 ds->snr = 0; 1432 ds->status = MALO_RXD_STATUS_IDLE; 1433 ds->channel = 0; 1434 ds->pktlen = htole16(MALO_RXSIZE); 1435 ds->nf = 0; 1436 ds->physbuffdata = htole32(bf->bf_data); 1437 /* NB: don't touch pPhysNext, set once */ 1438 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN; 1439 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1440 1441 return 0; 1442 } 1443 1444 /* 1445 * Setup the rx data structures. This should only be done once or we may get 1446 * out of sync with the firmware. 1447 */ 1448 static int 1449 malo_startrecv(struct malo_softc *sc) 1450 { 1451 struct malo_rxbuf *bf, *prev; 1452 struct malo_rxdesc *ds; 1453 1454 if (sc->malo_recvsetup == 1) { 1455 malo_mode_init(sc); /* set filters, etc. */ 1456 return 0; 1457 } 1458 1459 prev = NULL; 1460 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 1461 int error = malo_rxbuf_init(sc, bf); 1462 if (error != 0) { 1463 DPRINTF(sc, MALO_DEBUG_RECV, 1464 "%s: malo_rxbuf_init failed %d\n", 1465 __func__, error); 1466 return error; 1467 } 1468 if (prev != NULL) { 1469 ds = prev->bf_desc; 1470 ds->physnext = htole32(bf->bf_daddr); 1471 } 1472 prev = bf; 1473 } 1474 if (prev != NULL) { 1475 ds = prev->bf_desc; 1476 ds->physnext = 1477 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr); 1478 } 1479 1480 sc->malo_recvsetup = 1; 1481 1482 malo_mode_init(sc); /* set filters, etc. */ 1483 1484 return 0; 1485 } 1486 1487 static void 1488 malo_init_locked(struct malo_softc *sc) 1489 { 1490 struct ifnet *ifp = sc->malo_ifp; 1491 struct malo_hal *mh = sc->malo_mh; 1492 int error; 1493 1494 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1495 __func__, ifp->if_flags); 1496 1497 MALO_LOCK_ASSERT(sc); 1498 1499 /* 1500 * Stop anything previously setup. This is safe whether this is 1501 * the first time through or not. 1502 */ 1503 malo_stop_locked(ifp, 0); 1504 1505 /* 1506 * Push state to the firmware. 1507 */ 1508 if (!malo_hal_reset(sc)) { 1509 if_printf(ifp, "%s: unable to reset hardware\n", __func__); 1510 return; 1511 } 1512 1513 /* 1514 * Setup recv (once); transmit is already good to go. 1515 */ 1516 error = malo_startrecv(sc); 1517 if (error != 0) { 1518 if_printf(ifp, "%s: unable to start recv logic, error %d\n", 1519 __func__, error); 1520 return; 1521 } 1522 1523 /* 1524 * Enable interrupts. 1525 */ 1526 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY 1527 | MALO_A2HRIC_BIT_TX_DONE 1528 | MALO_A2HRIC_BIT_OPC_DONE 1529 | MALO_A2HRIC_BIT_MAC_EVENT 1530 | MALO_A2HRIC_BIT_RX_PROBLEM 1531 | MALO_A2HRIC_BIT_ICV_ERROR 1532 | MALO_A2HRIC_BIT_RADAR_DETECT 1533 | MALO_A2HRIC_BIT_CHAN_SWITCH; 1534 1535 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1536 malo_hal_intrset(mh, sc->malo_imask); 1537 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1538 } 1539 1540 static void 1541 malo_init(void *arg) 1542 { 1543 struct malo_softc *sc = (struct malo_softc *) arg; 1544 struct ifnet *ifp = sc->malo_ifp; 1545 struct ieee80211com *ic = ifp->if_l2com; 1546 1547 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1548 __func__, ifp->if_flags); 1549 1550 MALO_LOCK(sc); 1551 malo_init_locked(sc); 1552 1553 MALO_UNLOCK(sc); 1554 1555 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1556 ieee80211_start_all(ic); /* start all vap's */ 1557 } 1558 1559 /* 1560 * Set the multicast filter contents into the hardware. 1561 */ 1562 static void 1563 malo_setmcastfilter(struct malo_softc *sc) 1564 { 1565 struct ifnet *ifp = sc->malo_ifp; 1566 struct ieee80211com *ic = ifp->if_l2com; 1567 struct ifmultiaddr *ifma; 1568 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX]; 1569 uint8_t *mp; 1570 int nmc; 1571 1572 mp = macs; 1573 nmc = 0; 1574 1575 if (ic->ic_opmode == IEEE80211_M_MONITOR || 1576 (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC))) 1577 goto all; 1578 1579 if_maddr_rlock(ifp); 1580 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1581 if (ifma->ifma_addr->sa_family != AF_LINK) 1582 continue; 1583 1584 if (nmc == MALO_HAL_MCAST_MAX) { 1585 ifp->if_flags |= IFF_ALLMULTI; 1586 if_maddr_runlock(ifp); 1587 goto all; 1588 } 1589 IEEE80211_ADDR_COPY(mp, 1590 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1591 1592 mp += IEEE80211_ADDR_LEN, nmc++; 1593 } 1594 if_maddr_runlock(ifp); 1595 1596 malo_hal_setmcast(sc->malo_mh, nmc, macs); 1597 1598 all: 1599 /* 1600 * XXX we don't know how to set the f/w for supporting 1601 * IFF_ALLMULTI | IFF_PROMISC cases 1602 */ 1603 return; 1604 } 1605 1606 static int 1607 malo_mode_init(struct malo_softc *sc) 1608 { 1609 struct ifnet *ifp = sc->malo_ifp; 1610 struct ieee80211com *ic = ifp->if_l2com; 1611 struct malo_hal *mh = sc->malo_mh; 1612 1613 /* 1614 * NB: Ignore promisc in hostap mode; it's set by the 1615 * bridge. This is wrong but we have no way to 1616 * identify internal requests (from the bridge) 1617 * versus external requests such as for tcpdump. 1618 */ 1619 malo_hal_setpromisc(mh, (ifp->if_flags & IFF_PROMISC) && 1620 ic->ic_opmode != IEEE80211_M_HOSTAP); 1621 malo_setmcastfilter(sc); 1622 1623 return ENXIO; 1624 } 1625 1626 static void 1627 malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq) 1628 { 1629 struct ieee80211_node *ni; 1630 struct malo_txbuf *bf; 1631 u_int ix; 1632 1633 /* 1634 * NB: this assumes output has been stopped and 1635 * we do not need to block malo_tx_tasklet 1636 */ 1637 for (ix = 0;; ix++) { 1638 MALO_TXQ_LOCK(txq); 1639 bf = STAILQ_FIRST(&txq->active); 1640 if (bf == NULL) { 1641 MALO_TXQ_UNLOCK(txq); 1642 break; 1643 } 1644 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 1645 MALO_TXQ_UNLOCK(txq); 1646 #ifdef MALO_DEBUG 1647 if (sc->malo_debug & MALO_DEBUG_RESET) { 1648 struct ifnet *ifp = sc->malo_ifp; 1649 struct ieee80211com *ic = ifp->if_l2com; 1650 const struct malo_txrec *tr = 1651 mtod(bf->bf_m, const struct malo_txrec *); 1652 malo_printtxbuf(bf, txq->qnum, ix); 1653 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh, 1654 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1); 1655 } 1656 #endif /* MALO_DEBUG */ 1657 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1658 ni = bf->bf_node; 1659 bf->bf_node = NULL; 1660 if (ni != NULL) { 1661 /* 1662 * Reclaim node reference. 1663 */ 1664 ieee80211_free_node(ni); 1665 } 1666 m_freem(bf->bf_m); 1667 bf->bf_m = NULL; 1668 1669 MALO_TXQ_LOCK(txq); 1670 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1671 txq->nfree++; 1672 MALO_TXQ_UNLOCK(txq); 1673 } 1674 } 1675 1676 static void 1677 malo_stop_locked(struct ifnet *ifp, int disable) 1678 { 1679 struct malo_softc *sc = ifp->if_softc; 1680 struct malo_hal *mh = sc->malo_mh; 1681 int i; 1682 1683 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u if_flags 0x%x\n", 1684 __func__, sc->malo_invalid, ifp->if_flags); 1685 1686 MALO_LOCK_ASSERT(sc); 1687 1688 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1689 return; 1690 1691 /* 1692 * Shutdown the hardware and driver: 1693 * disable interrupts 1694 * turn off the radio 1695 * drain and release tx queues 1696 * 1697 * Note that some of this work is not possible if the hardware 1698 * is gone (invalid). 1699 */ 1700 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1701 callout_stop(&sc->malo_watchdog_timer); 1702 sc->malo_timer = 0; 1703 /* diable interrupt. */ 1704 malo_hal_intrset(mh, 0); 1705 /* turn off the radio. */ 1706 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE); 1707 1708 /* drain and release tx queues. */ 1709 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 1710 malo_tx_draintxq(sc, &sc->malo_txq[i]); 1711 } 1712 1713 static int 1714 malo_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1715 { 1716 #define MALO_IS_RUNNING(ifp) \ 1717 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1718 struct malo_softc *sc = ifp->if_softc; 1719 struct ieee80211com *ic = ifp->if_l2com; 1720 struct ifreq *ifr = (struct ifreq *) data; 1721 int error = 0, startall = 0; 1722 1723 MALO_LOCK(sc); 1724 switch (cmd) { 1725 case SIOCSIFFLAGS: 1726 if (MALO_IS_RUNNING(ifp)) { 1727 /* 1728 * To avoid rescanning another access point, 1729 * do not call malo_init() here. Instead, 1730 * only reflect promisc mode settings. 1731 */ 1732 malo_mode_init(sc); 1733 } else if (ifp->if_flags & IFF_UP) { 1734 /* 1735 * Beware of being called during attach/detach 1736 * to reset promiscuous mode. In that case we 1737 * will still be marked UP but not RUNNING. 1738 * However trying to re-init the interface 1739 * is the wrong thing to do as we've already 1740 * torn down much of our state. There's 1741 * probably a better way to deal with this. 1742 */ 1743 if (!sc->malo_invalid) { 1744 malo_init_locked(sc); 1745 startall = 1; 1746 } 1747 } else 1748 malo_stop_locked(ifp, 1); 1749 break; 1750 case SIOCGIFMEDIA: 1751 case SIOCSIFMEDIA: 1752 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1753 break; 1754 default: 1755 error = ether_ioctl(ifp, cmd, data); 1756 break; 1757 } 1758 MALO_UNLOCK(sc); 1759 1760 if (startall) 1761 ieee80211_start_all(ic); 1762 return error; 1763 #undef MALO_IS_RUNNING 1764 } 1765 1766 /* 1767 * Callback from the 802.11 layer to update the slot time 1768 * based on the current setting. We use it to notify the 1769 * firmware of ERP changes and the f/w takes care of things 1770 * like slot time and preamble. 1771 */ 1772 static void 1773 malo_updateslot(struct ifnet *ifp) 1774 { 1775 struct malo_softc *sc = ifp->if_softc; 1776 struct ieee80211com *ic = ifp->if_l2com; 1777 struct malo_hal *mh = sc->malo_mh; 1778 int error; 1779 1780 /* NB: can be called early; suppress needless cmds */ 1781 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1782 return; 1783 1784 DPRINTF(sc, MALO_DEBUG_RESET, 1785 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n", 1786 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags, 1787 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags); 1788 1789 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1790 error = malo_hal_set_slot(mh, 1); 1791 else 1792 error = malo_hal_set_slot(mh, 0); 1793 1794 if (error != 0) 1795 device_printf(sc->malo_dev, "setting %s slot failed\n", 1796 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long"); 1797 } 1798 1799 static int 1800 malo_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1801 { 1802 struct ieee80211com *ic = vap->iv_ic; 1803 struct malo_softc *sc = ic->ic_ifp->if_softc; 1804 struct malo_hal *mh = sc->malo_mh; 1805 int error; 1806 1807 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1808 ieee80211_state_name[vap->iv_state], 1809 ieee80211_state_name[nstate]); 1810 1811 /* 1812 * Invoke the net80211 layer first so iv_bss is setup. 1813 */ 1814 error = MALO_VAP(vap)->malo_newstate(vap, nstate, arg); 1815 if (error != 0) 1816 return error; 1817 1818 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1819 struct ieee80211_node *ni = vap->iv_bss; 1820 enum ieee80211_phymode mode = ieee80211_chan2mode(ni->ni_chan); 1821 const struct ieee80211_txparam *tp = &vap->iv_txparms[mode]; 1822 1823 DPRINTF(sc, MALO_DEBUG_STATE, 1824 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s " 1825 "capinfo 0x%04x chan %d associd 0x%x mode %d rate %d\n", 1826 vap->iv_ifp->if_xname, __func__, vap->iv_flags, 1827 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo, 1828 ieee80211_chan2ieee(ic, ic->ic_curchan), 1829 ni->ni_associd, mode, tp->ucastrate); 1830 1831 malo_hal_setradio(mh, 1, 1832 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? 1833 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE); 1834 malo_hal_setassocid(sc->malo_mh, ni->ni_bssid, ni->ni_associd); 1835 malo_hal_set_rate(mh, mode, 1836 tp->ucastrate == IEEE80211_FIXED_RATE_NONE ? 1837 0 : malo_fix2rate(tp->ucastrate)); 1838 } 1839 return 0; 1840 } 1841 1842 static int 1843 malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1844 const struct ieee80211_bpf_params *params) 1845 { 1846 struct ieee80211com *ic = ni->ni_ic; 1847 struct ifnet *ifp = ic->ic_ifp; 1848 struct malo_softc *sc = ifp->if_softc; 1849 struct malo_txbuf *bf; 1850 struct malo_txq *txq; 1851 1852 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) { 1853 ieee80211_free_node(ni); 1854 m_freem(m); 1855 return ENETDOWN; 1856 } 1857 1858 /* 1859 * Grab a TX buffer and associated resources. Note that we depend 1860 * on the classification by the 802.11 layer to get to the right h/w 1861 * queue. Management frames must ALWAYS go on queue 1 but we 1862 * cannot just force that here because we may receive non-mgt frames. 1863 */ 1864 txq = &sc->malo_txq[0]; 1865 bf = malo_getbuf(sc, txq); 1866 if (bf == NULL) { 1867 /* XXX blocks other traffic */ 1868 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1869 ieee80211_free_node(ni); 1870 m_freem(m); 1871 return ENOBUFS; 1872 } 1873 1874 /* 1875 * Pass the frame to the h/w for transmission. 1876 */ 1877 if (malo_tx_start(sc, ni, bf, m) != 0) { 1878 ifp->if_oerrors++; 1879 bf->bf_m = NULL; 1880 bf->bf_node = NULL; 1881 MALO_TXQ_LOCK(txq); 1882 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1883 txq->nfree++; 1884 MALO_TXQ_UNLOCK(txq); 1885 1886 ieee80211_free_node(ni); 1887 return EIO; /* XXX */ 1888 } 1889 1890 /* 1891 * NB: We don't need to lock against tx done because this just 1892 * prods the firmware to check the transmit descriptors. The firmware 1893 * will also start fetching descriptors by itself if it notices 1894 * new ones are present when it goes to deliver a tx done interrupt 1895 * to the host. So if we race with tx done processing it's ok. 1896 * Delivering the kick here rather than in malo_tx_start is 1897 * an optimization to avoid poking the firmware for each packet. 1898 * 1899 * NB: the queue id isn't used so 0 is ok. 1900 */ 1901 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1902 1903 return 0; 1904 } 1905 1906 static void 1907 malo_sysctlattach(struct malo_softc *sc) 1908 { 1909 #ifdef MALO_DEBUG 1910 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev); 1911 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev); 1912 1913 sc->malo_debug = malo_debug; 1914 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 1915 "debug", CTLFLAG_RW, &sc->malo_debug, 0, 1916 "control debugging printfs"); 1917 #endif 1918 } 1919 1920 static void 1921 malo_announce(struct malo_softc *sc) 1922 { 1923 struct ifnet *ifp = sc->malo_ifp; 1924 1925 if_printf(ifp, "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n", 1926 sc->malo_hwspecs.hwversion, 1927 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff, 1928 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff, 1929 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff, 1930 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff, 1931 sc->malo_hwspecs.regioncode); 1932 1933 if (bootverbose || malo_rxbuf != MALO_RXBUF) 1934 if_printf(ifp, "using %u rx buffers\n", malo_rxbuf); 1935 if (bootverbose || malo_txbuf != MALO_TXBUF) 1936 if_printf(ifp, "using %u tx buffers\n", malo_txbuf); 1937 } 1938 1939 /* 1940 * Convert net80211 channel to a HAL channel. 1941 */ 1942 static void 1943 malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan) 1944 { 1945 hc->channel = chan->ic_ieee; 1946 1947 *(uint32_t *)&hc->flags = 0; 1948 if (IEEE80211_IS_CHAN_2GHZ(chan)) 1949 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ; 1950 } 1951 1952 /* 1953 * Set/change channels. If the channel is really being changed, 1954 * it's done by reseting the chip. To accomplish this we must 1955 * first cleanup any pending DMA, then restart stuff after a la 1956 * malo_init. 1957 */ 1958 static int 1959 malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan) 1960 { 1961 struct malo_hal *mh = sc->malo_mh; 1962 struct malo_hal_channel hchan; 1963 1964 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n", 1965 __func__, chan->ic_freq, chan->ic_flags); 1966 1967 /* 1968 * Convert to a HAL channel description with the flags constrained 1969 * to reflect the current operating mode. 1970 */ 1971 malo_mapchan(&hchan, chan); 1972 malo_hal_intrset(mh, 0); /* disable interrupts */ 1973 malo_hal_setchannel(mh, &hchan); 1974 malo_hal_settxpower(mh, &hchan); 1975 1976 /* 1977 * Update internal state. 1978 */ 1979 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq); 1980 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq); 1981 if (IEEE80211_IS_CHAN_ANYG(chan)) { 1982 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G); 1983 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G); 1984 } else { 1985 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B); 1986 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B); 1987 } 1988 sc->malo_curchan = hchan; 1989 malo_hal_intrset(mh, sc->malo_imask); 1990 1991 return 0; 1992 } 1993 1994 static void 1995 malo_scan_start(struct ieee80211com *ic) 1996 { 1997 struct ifnet *ifp = ic->ic_ifp; 1998 struct malo_softc *sc = ifp->if_softc; 1999 2000 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2001 } 2002 2003 static void 2004 malo_scan_end(struct ieee80211com *ic) 2005 { 2006 struct ifnet *ifp = ic->ic_ifp; 2007 struct malo_softc *sc = ifp->if_softc; 2008 2009 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2010 } 2011 2012 static void 2013 malo_set_channel(struct ieee80211com *ic) 2014 { 2015 struct ifnet *ifp = ic->ic_ifp; 2016 struct malo_softc *sc = ifp->if_softc; 2017 2018 (void) malo_chan_set(sc, ic->ic_curchan); 2019 } 2020 2021 static void 2022 malo_rx_proc(void *arg, int npending) 2023 { 2024 #define IEEE80211_DIR_DSTODS(wh) \ 2025 ((((const struct ieee80211_frame *)wh)->i_fc[1] & \ 2026 IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 2027 struct malo_softc *sc = arg; 2028 struct ifnet *ifp = sc->malo_ifp; 2029 struct ieee80211com *ic = ifp->if_l2com; 2030 struct malo_rxbuf *bf; 2031 struct malo_rxdesc *ds; 2032 struct mbuf *m, *mnew; 2033 struct ieee80211_qosframe *wh; 2034 struct ieee80211_qosframe_addr4 *wh4; 2035 struct ieee80211_node *ni; 2036 int off, len, hdrlen, pktlen, rssi, ntodo; 2037 uint8_t *data, status; 2038 uint32_t readptr, writeptr; 2039 2040 DPRINTF(sc, MALO_DEBUG_RX_PROC, 2041 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n", 2042 __func__, npending, 2043 sc->malo_hwspecs.rxdesc_read, 2044 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read), 2045 sc->malo_hwspecs.rxdesc_write, 2046 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write)); 2047 2048 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read); 2049 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write); 2050 if (readptr == writeptr) 2051 return; 2052 2053 bf = sc->malo_rxnext; 2054 for (ntodo = malo_rxquota; ntodo > 0 && readptr != writeptr; ntodo--) { 2055 if (bf == NULL) { 2056 bf = STAILQ_FIRST(&sc->malo_rxbuf); 2057 break; 2058 } 2059 ds = bf->bf_desc; 2060 if (bf->bf_m == NULL) { 2061 /* 2062 * If data allocation failed previously there 2063 * will be no buffer; try again to re-populate it. 2064 * Note the firmware will not advance to the next 2065 * descriptor with a dma buffer so we must mimic 2066 * this or we'll get out of sync. 2067 */ 2068 DPRINTF(sc, MALO_DEBUG_ANY, 2069 "%s: rx buf w/o dma memory\n", __func__); 2070 (void)malo_rxbuf_init(sc, bf); 2071 break; 2072 } 2073 MALO_RXDESC_SYNC(sc, ds, 2074 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2075 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN) 2076 break; 2077 2078 readptr = le32toh(ds->physnext); 2079 2080 #ifdef MALO_DEBUG 2081 if (sc->malo_debug & MALO_DEBUG_RECV_DESC) 2082 malo_printrxbuf(bf, 0); 2083 #endif 2084 status = ds->status; 2085 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) { 2086 ifp->if_ierrors++; 2087 goto rx_next; 2088 } 2089 /* 2090 * Sync the data buffer. 2091 */ 2092 len = le16toh(ds->pktlen); 2093 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 2094 BUS_DMASYNC_POSTREAD); 2095 /* 2096 * The 802.11 header is provided all or in part at the front; 2097 * use it to calculate the true size of the header that we'll 2098 * construct below. We use this to figure out where to copy 2099 * payload prior to constructing the header. 2100 */ 2101 m = bf->bf_m; 2102 data = mtod(m, uint8_t *); 2103 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t)); 2104 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4); 2105 2106 /* 2107 * Calculate RSSI. XXX wrong 2108 */ 2109 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */ 2110 if (rssi > 100) 2111 rssi = 100; 2112 2113 pktlen = hdrlen + (len - off); 2114 /* 2115 * NB: we know our frame is at least as large as 2116 * IEEE80211_MIN_LEN because there is a 4-address frame at 2117 * the front. Hence there's no need to vet the packet length. 2118 * If the frame in fact is too small it should be discarded 2119 * at the net80211 layer. 2120 */ 2121 2122 /* XXX don't need mbuf, just dma buffer */ 2123 mnew = malo_getrxmbuf(sc, bf); 2124 if (mnew == NULL) { 2125 ifp->if_ierrors++; 2126 goto rx_next; 2127 } 2128 /* 2129 * Attach the dma buffer to the mbuf; malo_rxbuf_init will 2130 * re-setup the rx descriptor using the replacement dma 2131 * buffer we just installed above. 2132 */ 2133 bf->bf_m = mnew; 2134 m->m_data += off - hdrlen; 2135 m->m_pkthdr.len = m->m_len = pktlen; 2136 m->m_pkthdr.rcvif = ifp; 2137 2138 /* 2139 * Piece 802.11 header together. 2140 */ 2141 wh = mtod(m, struct ieee80211_qosframe *); 2142 /* NB: don't need to do this sometimes but ... */ 2143 /* XXX special case so we can memcpy after m_devget? */ 2144 ovbcopy(data + sizeof(uint16_t), wh, hdrlen); 2145 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2146 if (IEEE80211_DIR_DSTODS(wh)) { 2147 wh4 = mtod(m, 2148 struct ieee80211_qosframe_addr4*); 2149 *(uint16_t *)wh4->i_qos = ds->qosctrl; 2150 } else { 2151 *(uint16_t *)wh->i_qos = ds->qosctrl; 2152 } 2153 } 2154 if (ieee80211_radiotap_active(ic)) { 2155 sc->malo_rx_th.wr_flags = 0; 2156 sc->malo_rx_th.wr_rate = ds->rate; 2157 sc->malo_rx_th.wr_antsignal = rssi; 2158 sc->malo_rx_th.wr_antnoise = ds->nf; 2159 } 2160 #ifdef MALO_DEBUG 2161 if (IFF_DUMPPKTS_RECV(sc, wh)) { 2162 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 2163 len, ds->rate, rssi); 2164 } 2165 #endif 2166 ifp->if_ipackets++; 2167 2168 /* dispatch */ 2169 ni = ieee80211_find_rxnode(ic, 2170 (struct ieee80211_frame_min *)wh); 2171 if (ni != NULL) { 2172 (void) ieee80211_input(ni, m, rssi, ds->nf); 2173 ieee80211_free_node(ni); 2174 } else 2175 (void) ieee80211_input_all(ic, m, rssi, ds->nf); 2176 rx_next: 2177 /* NB: ignore ENOMEM so we process more descriptors */ 2178 (void) malo_rxbuf_init(sc, bf); 2179 bf = STAILQ_NEXT(bf, bf_list); 2180 } 2181 2182 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr); 2183 sc->malo_rxnext = bf; 2184 2185 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 && 2186 !IFQ_IS_EMPTY(&ifp->if_snd)) 2187 malo_start(ifp); 2188 #undef IEEE80211_DIR_DSTODS 2189 } 2190 2191 static void 2192 malo_stop(struct ifnet *ifp, int disable) 2193 { 2194 struct malo_softc *sc = ifp->if_softc; 2195 2196 MALO_LOCK(sc); 2197 malo_stop_locked(ifp, disable); 2198 MALO_UNLOCK(sc); 2199 } 2200 2201 /* 2202 * Reclaim all tx queue resources. 2203 */ 2204 static void 2205 malo_tx_cleanup(struct malo_softc *sc) 2206 { 2207 int i; 2208 2209 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 2210 malo_tx_cleanupq(sc, &sc->malo_txq[i]); 2211 } 2212 2213 int 2214 malo_detach(struct malo_softc *sc) 2215 { 2216 struct ifnet *ifp = sc->malo_ifp; 2217 struct ieee80211com *ic = ifp->if_l2com; 2218 2219 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2220 __func__, ifp->if_flags); 2221 2222 malo_stop(ifp, 1); 2223 2224 if (sc->malo_tq != NULL) { 2225 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask); 2226 taskqueue_drain(sc->malo_tq, &sc->malo_txtask); 2227 taskqueue_free(sc->malo_tq); 2228 sc->malo_tq = NULL; 2229 } 2230 2231 /* 2232 * NB: the order of these is important: 2233 * o call the 802.11 layer before detaching the hal to 2234 * insure callbacks into the driver to delete global 2235 * key cache entries can be handled 2236 * o reclaim the tx queue data structures after calling 2237 * the 802.11 layer as we'll get called back to reclaim 2238 * node state and potentially want to use them 2239 * o to cleanup the tx queues the hal is called, so detach 2240 * it last 2241 * Other than that, it's straightforward... 2242 */ 2243 ieee80211_ifdetach(ic); 2244 callout_drain(&sc->malo_watchdog_timer); 2245 malo_dma_cleanup(sc); 2246 malo_tx_cleanup(sc); 2247 malo_hal_detach(sc->malo_mh); 2248 if_free(ifp); 2249 2250 MALO_LOCK_DESTROY(sc); 2251 2252 return 0; 2253 } 2254 2255 void 2256 malo_shutdown(struct malo_softc *sc) 2257 { 2258 malo_stop(sc->malo_ifp, 1); 2259 } 2260 2261 void 2262 malo_suspend(struct malo_softc *sc) 2263 { 2264 struct ifnet *ifp = sc->malo_ifp; 2265 2266 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2267 __func__, ifp->if_flags); 2268 2269 malo_stop(ifp, 1); 2270 } 2271 2272 void 2273 malo_resume(struct malo_softc *sc) 2274 { 2275 struct ifnet *ifp = sc->malo_ifp; 2276 2277 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2278 __func__, ifp->if_flags); 2279 2280 if (ifp->if_flags & IFF_UP) 2281 malo_init(sc); 2282 } 2283