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_dmamap_create(dd->dd_dmat, BUS_DMA_NOWAIT, &dd->dd_dmamap); 500 if (error != 0) { 501 if_printf(ifp, "unable to create dmamap for %s descriptors, " 502 "error %u\n", dd->dd_name, error); 503 goto fail0; 504 } 505 506 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc, 507 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dd->dd_dmamap); 508 if (error != 0) { 509 if_printf(ifp, "unable to alloc memory for %u %s descriptors, " 510 "error %u\n", nbuf * ndesc, dd->dd_name, error); 511 goto fail1; 512 } 513 514 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap, 515 dd->dd_desc, dd->dd_desc_len, 516 malo_load_cb, &dd->dd_desc_paddr, BUS_DMA_NOWAIT); 517 if (error != 0) { 518 if_printf(ifp, "unable to map %s descriptors, error %u\n", 519 dd->dd_name, error); 520 goto fail2; 521 } 522 523 ds = dd->dd_desc; 524 memset(ds, 0, dd->dd_desc_len); 525 DPRINTF(sc, MALO_DEBUG_RESET, "%s: %s DMA map: %p (%lu) -> %p (%lu)\n", 526 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len, 527 (caddr_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len); 528 529 return 0; 530 fail2: 531 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 532 fail1: 533 bus_dmamap_destroy(dd->dd_dmat, dd->dd_dmamap); 534 fail0: 535 bus_dma_tag_destroy(dd->dd_dmat); 536 memset(dd, 0, sizeof(*dd)); 537 return error; 538 } 539 540 #define DS2PHYS(_dd, _ds) \ 541 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 542 543 static int 544 malo_rxdma_setup(struct malo_softc *sc) 545 { 546 struct ifnet *ifp = sc->malo_ifp; 547 int error, bsize, i; 548 struct malo_rxbuf *bf; 549 struct malo_rxdesc *ds; 550 551 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma, 552 malo_rxbuf, sizeof(struct malo_rxbuf), 553 1, sizeof(struct malo_rxdesc)); 554 if (error != 0) 555 return error; 556 557 /* 558 * Allocate rx buffers and set them up. 559 */ 560 bsize = malo_rxbuf * sizeof(struct malo_rxbuf); 561 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 562 if (bf == NULL) { 563 if_printf(ifp, "malloc of %u rx buffers failed\n", bsize); 564 return error; 565 } 566 sc->malo_rxdma.dd_bufptr = bf; 567 568 STAILQ_INIT(&sc->malo_rxbuf); 569 ds = sc->malo_rxdma.dd_desc; 570 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) { 571 bf->bf_desc = ds; 572 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds); 573 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 574 &bf->bf_dmamap); 575 if (error != 0) { 576 if_printf(ifp, "%s: unable to dmamap for rx buffer, " 577 "error %d\n", __func__, error); 578 return error; 579 } 580 /* NB: tail is intentional to preserve descriptor order */ 581 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list); 582 } 583 return 0; 584 } 585 586 static int 587 malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq) 588 { 589 struct ifnet *ifp = sc->malo_ifp; 590 int error, bsize, i; 591 struct malo_txbuf *bf; 592 struct malo_txdesc *ds; 593 594 error = malo_desc_setup(sc, "tx", &txq->dma, 595 malo_txbuf, sizeof(struct malo_txbuf), 596 MALO_TXDESC, sizeof(struct malo_txdesc)); 597 if (error != 0) 598 return error; 599 600 /* allocate and setup tx buffers */ 601 bsize = malo_txbuf * sizeof(struct malo_txbuf); 602 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 603 if (bf == NULL) { 604 if_printf(ifp, "malloc of %u tx buffers failed\n", 605 malo_txbuf); 606 return ENOMEM; 607 } 608 txq->dma.dd_bufptr = bf; 609 610 STAILQ_INIT(&txq->free); 611 txq->nfree = 0; 612 ds = txq->dma.dd_desc; 613 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) { 614 bf->bf_desc = ds; 615 bf->bf_daddr = DS2PHYS(&txq->dma, ds); 616 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 617 &bf->bf_dmamap); 618 if (error != 0) { 619 if_printf(ifp, "unable to create dmamap for tx " 620 "buffer %u, error %u\n", i, error); 621 return error; 622 } 623 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 624 txq->nfree++; 625 } 626 627 return 0; 628 } 629 630 static void 631 malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd) 632 { 633 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap); 634 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 635 bus_dmamap_destroy(dd->dd_dmat, dd->dd_dmamap); 636 bus_dma_tag_destroy(dd->dd_dmat); 637 638 memset(dd, 0, sizeof(*dd)); 639 } 640 641 static void 642 malo_rxdma_cleanup(struct malo_softc *sc) 643 { 644 struct malo_rxbuf *bf; 645 646 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 647 if (bf->bf_m != NULL) { 648 m_freem(bf->bf_m); 649 bf->bf_m = NULL; 650 } 651 if (bf->bf_dmamap != NULL) { 652 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 653 bf->bf_dmamap = NULL; 654 } 655 } 656 STAILQ_INIT(&sc->malo_rxbuf); 657 if (sc->malo_rxdma.dd_bufptr != NULL) { 658 free(sc->malo_rxdma.dd_bufptr, M_MALODEV); 659 sc->malo_rxdma.dd_bufptr = NULL; 660 } 661 if (sc->malo_rxdma.dd_desc_len != 0) 662 malo_desc_cleanup(sc, &sc->malo_rxdma); 663 } 664 665 static void 666 malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq) 667 { 668 struct malo_txbuf *bf; 669 struct ieee80211_node *ni; 670 671 STAILQ_FOREACH(bf, &txq->free, bf_list) { 672 if (bf->bf_m != NULL) { 673 m_freem(bf->bf_m); 674 bf->bf_m = NULL; 675 } 676 ni = bf->bf_node; 677 bf->bf_node = NULL; 678 if (ni != NULL) { 679 /* 680 * Reclaim node reference. 681 */ 682 ieee80211_free_node(ni); 683 } 684 if (bf->bf_dmamap != NULL) { 685 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 686 bf->bf_dmamap = NULL; 687 } 688 } 689 STAILQ_INIT(&txq->free); 690 txq->nfree = 0; 691 if (txq->dma.dd_bufptr != NULL) { 692 free(txq->dma.dd_bufptr, M_MALODEV); 693 txq->dma.dd_bufptr = NULL; 694 } 695 if (txq->dma.dd_desc_len != 0) 696 malo_desc_cleanup(sc, &txq->dma); 697 } 698 699 static void 700 malo_dma_cleanup(struct malo_softc *sc) 701 { 702 int i; 703 704 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 705 malo_txdma_cleanup(sc, &sc->malo_txq[i]); 706 707 malo_rxdma_cleanup(sc); 708 } 709 710 static int 711 malo_dma_setup(struct malo_softc *sc) 712 { 713 int error, i; 714 715 /* rxdma initializing. */ 716 error = malo_rxdma_setup(sc); 717 if (error != 0) 718 return error; 719 720 /* NB: we just have 1 tx queue now. */ 721 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 722 error = malo_txdma_setup(sc, &sc->malo_txq[i]); 723 if (error != 0) { 724 malo_dma_cleanup(sc); 725 726 return error; 727 } 728 729 malo_txq_init(sc, &sc->malo_txq[i], i); 730 } 731 732 return 0; 733 } 734 735 static void 736 malo_hal_set_rxtxdma(struct malo_softc *sc) 737 { 738 int i; 739 740 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, 741 sc->malo_hwdma.rxdesc_read); 742 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write, 743 sc->malo_hwdma.rxdesc_read); 744 745 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 746 malo_bar0_write4(sc, 747 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]); 748 } 749 } 750 751 /* 752 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are 753 * for compatibility with older firmware. For current firmware we send 754 * this information with a cmd block via malo_hal_sethwdma. 755 */ 756 static int 757 malo_setup_hwdma(struct malo_softc *sc) 758 { 759 int i; 760 struct malo_txq *txq; 761 762 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr; 763 764 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 765 txq = &sc->malo_txq[i]; 766 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr; 767 } 768 sc->malo_hwdma.maxnum_txwcb = malo_txbuf; 769 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES; 770 771 malo_hal_set_rxtxdma(sc); 772 773 return 0; 774 } 775 776 static void 777 malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum) 778 { 779 struct malo_txbuf *bf, *bn; 780 struct malo_txdesc *ds; 781 782 MALO_TXQ_LOCK_INIT(sc, txq); 783 txq->qnum = qnum; 784 txq->txpri = 0; /* XXX */ 785 786 STAILQ_FOREACH(bf, &txq->free, bf_list) { 787 bf->bf_txq = txq; 788 789 ds = bf->bf_desc; 790 bn = STAILQ_NEXT(bf, bf_list); 791 if (bn == NULL) 792 bn = STAILQ_FIRST(&txq->free); 793 ds->physnext = htole32(bn->bf_daddr); 794 } 795 STAILQ_INIT(&txq->active); 796 } 797 798 /* 799 * Reclaim resources for a setup queue. 800 */ 801 static void 802 malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq) 803 { 804 /* XXX hal work? */ 805 MALO_TXQ_LOCK_DESTROY(txq); 806 } 807 808 /* 809 * Allocate a tx buffer for sending a frame. 810 */ 811 static struct malo_txbuf * 812 malo_getbuf(struct malo_softc *sc, struct malo_txq *txq) 813 { 814 struct malo_txbuf *bf; 815 816 MALO_TXQ_LOCK(txq); 817 bf = STAILQ_FIRST(&txq->free); 818 if (bf != NULL) { 819 STAILQ_REMOVE_HEAD(&txq->free, bf_list); 820 txq->nfree--; 821 } 822 MALO_TXQ_UNLOCK(txq); 823 if (bf == NULL) { 824 DPRINTF(sc, MALO_DEBUG_XMIT, 825 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum); 826 sc->malo_stats.mst_tx_qstop++; 827 } 828 return bf; 829 } 830 831 static int 832 malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0) 833 { 834 struct mbuf *m; 835 int error; 836 837 /* 838 * Load the DMA map so any coalescing is done. This also calculates 839 * the number of descriptors we need. 840 */ 841 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 842 bf->bf_segs, &bf->bf_nseg, 843 BUS_DMA_NOWAIT); 844 if (error == EFBIG) { 845 /* XXX packet requires too many descriptors */ 846 bf->bf_nseg = MALO_TXDESC + 1; 847 } else if (error != 0) { 848 sc->malo_stats.mst_tx_busdma++; 849 m_freem(m0); 850 return error; 851 } 852 /* 853 * Discard null packets and check for packets that require too many 854 * TX descriptors. We try to convert the latter to a cluster. 855 */ 856 if (error == EFBIG) { /* too many desc's, linearize */ 857 sc->malo_stats.mst_tx_linear++; 858 m = m_defrag(m0, M_NOWAIT); 859 if (m == NULL) { 860 m_freem(m0); 861 sc->malo_stats.mst_tx_nombuf++; 862 return ENOMEM; 863 } 864 m0 = m; 865 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 866 bf->bf_segs, &bf->bf_nseg, 867 BUS_DMA_NOWAIT); 868 if (error != 0) { 869 sc->malo_stats.mst_tx_busdma++; 870 m_freem(m0); 871 return error; 872 } 873 KASSERT(bf->bf_nseg <= MALO_TXDESC, 874 ("too many segments after defrag; nseg %u", bf->bf_nseg)); 875 } else if (bf->bf_nseg == 0) { /* null packet, discard */ 876 sc->malo_stats.mst_tx_nodata++; 877 m_freem(m0); 878 return EIO; 879 } 880 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n", 881 __func__, m0, m0->m_pkthdr.len); 882 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 883 bf->bf_m = m0; 884 885 return 0; 886 } 887 888 #ifdef MALO_DEBUG 889 static void 890 malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix) 891 { 892 const struct malo_rxdesc *ds = bf->bf_desc; 893 uint32_t status = le32toh(ds->status); 894 895 printf("R[%2u] (DS.V:%p DS.P:%p) NEXT:%08x DATA:%08x RC:%02x%s\n" 896 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x" 897 " RATE:%02x QOS:%04x\n", 898 ix, ds, (const struct malo_desc *)bf->bf_daddr, 899 le32toh(ds->physnext), le32toh(ds->physbuffdata), 900 ds->rxcontrol, 901 ds->rxcontrol != MALO_RXD_CTRL_DRIVER_OWN ? 902 "" : (status & MALO_RXD_STATUS_OK) ? " *" : " !", 903 ds->status, le16toh(ds->pktlen), ds->snr, ds->nf, ds->channel, 904 ds->rate, le16toh(ds->qosctrl)); 905 } 906 907 static void 908 malo_printtxbuf(const struct malo_txbuf *bf, u_int qnum, u_int ix) 909 { 910 const struct malo_txdesc *ds = bf->bf_desc; 911 uint32_t status = le32toh(ds->status); 912 913 printf("Q%u[%3u]", qnum, ix); 914 printf(" (DS.V:%p DS.P:%p)\n", 915 ds, (const struct malo_txdesc *)bf->bf_daddr); 916 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n", 917 le32toh(ds->physnext), 918 le32toh(ds->pktptr), le16toh(ds->pktlen), status, 919 status & MALO_TXD_STATUS_USED ? 920 "" : (status & 3) != 0 ? " *" : " !"); 921 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n", 922 ds->datarate, ds->txpriority, le16toh(ds->qosctrl), 923 le32toh(ds->sap_pktinfo), le16toh(ds->format)); 924 #if 0 925 { 926 const uint8_t *cp = (const uint8_t *) ds; 927 int i; 928 for (i = 0; i < sizeof(struct malo_txdesc); i++) { 929 printf("%02x ", cp[i]); 930 if (((i+1) % 16) == 0) 931 printf("\n"); 932 } 933 printf("\n"); 934 } 935 #endif 936 } 937 #endif /* MALO_DEBUG */ 938 939 static __inline void 940 malo_updatetxrate(struct ieee80211_node *ni, int rix) 941 { 942 #define N(x) (sizeof(x)/sizeof(x[0])) 943 static const int ieeerates[] = 944 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 }; 945 if (rix < N(ieeerates)) 946 ni->ni_txrate = ieeerates[rix]; 947 #undef N 948 } 949 950 static int 951 malo_fix2rate(int fix_rate) 952 { 953 #define N(x) (sizeof(x)/sizeof(x[0])) 954 static const int rates[] = 955 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 }; 956 return (fix_rate < N(rates) ? rates[fix_rate] : 0); 957 #undef N 958 } 959 960 /* idiomatic shorthands: MS = mask+shift, SM = shift+mask */ 961 #define MS(v,x) (((v) & x) >> x##_S) 962 #define SM(v,x) (((v) << x##_S) & x) 963 964 /* 965 * Process completed xmit descriptors from the specified queue. 966 */ 967 static int 968 malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq) 969 { 970 struct malo_txbuf *bf; 971 struct malo_txdesc *ds; 972 struct ieee80211_node *ni; 973 int nreaped; 974 uint32_t status; 975 976 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n", 977 __func__, txq->qnum); 978 for (nreaped = 0;; nreaped++) { 979 MALO_TXQ_LOCK(txq); 980 bf = STAILQ_FIRST(&txq->active); 981 if (bf == NULL) { 982 MALO_TXQ_UNLOCK(txq); 983 break; 984 } 985 ds = bf->bf_desc; 986 MALO_TXDESC_SYNC(txq, ds, 987 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 988 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) { 989 MALO_TXQ_UNLOCK(txq); 990 break; 991 } 992 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 993 MALO_TXQ_UNLOCK(txq); 994 995 #ifdef MALO_DEBUG 996 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC) 997 malo_printtxbuf(bf, txq->qnum, nreaped); 998 #endif 999 ni = bf->bf_node; 1000 if (ni != NULL) { 1001 status = le32toh(ds->status); 1002 if (status & MALO_TXD_STATUS_OK) { 1003 uint16_t format = le16toh(ds->format); 1004 uint8_t txant = MS(format, MALO_TXD_ANTENNA); 1005 1006 sc->malo_stats.mst_ant_tx[txant]++; 1007 if (status & MALO_TXD_STATUS_OK_RETRY) 1008 sc->malo_stats.mst_tx_retries++; 1009 if (status & MALO_TXD_STATUS_OK_MORE_RETRY) 1010 sc->malo_stats.mst_tx_mretries++; 1011 malo_updatetxrate(ni, ds->datarate); 1012 sc->malo_stats.mst_tx_rate = ds->datarate; 1013 } else { 1014 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR) 1015 sc->malo_stats.mst_tx_linkerror++; 1016 if (status & MALO_TXD_STATUS_FAILED_XRETRY) 1017 sc->malo_stats.mst_tx_xretries++; 1018 if (status & MALO_TXD_STATUS_FAILED_AGING) 1019 sc->malo_stats.mst_tx_aging++; 1020 } 1021 /* 1022 * Do any tx complete callback. Note this must 1023 * be done before releasing the node reference. 1024 * XXX no way to figure out if frame was ACK'd 1025 */ 1026 if (bf->bf_m->m_flags & M_TXCB) { 1027 /* XXX strip fw len in case header inspected */ 1028 m_adj(bf->bf_m, sizeof(uint16_t)); 1029 ieee80211_process_callback(ni, bf->bf_m, 1030 (status & MALO_TXD_STATUS_OK) == 0); 1031 } 1032 /* 1033 * Reclaim reference to node. 1034 * 1035 * NB: the node may be reclaimed here if, for example 1036 * this is a DEAUTH message that was sent and the 1037 * node was timed out due to inactivity. 1038 */ 1039 ieee80211_free_node(ni); 1040 } 1041 ds->status = htole32(MALO_TXD_STATUS_IDLE); 1042 ds->pktlen = htole32(0); 1043 1044 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 1045 BUS_DMASYNC_POSTWRITE); 1046 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1047 m_freem(bf->bf_m); 1048 bf->bf_m = NULL; 1049 bf->bf_node = NULL; 1050 1051 MALO_TXQ_LOCK(txq); 1052 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1053 txq->nfree++; 1054 MALO_TXQ_UNLOCK(txq); 1055 } 1056 return nreaped; 1057 } 1058 1059 /* 1060 * Deferred processing of transmit interrupt. 1061 */ 1062 static void 1063 malo_tx_proc(void *arg, int npending) 1064 { 1065 struct malo_softc *sc = arg; 1066 struct ifnet *ifp = sc->malo_ifp; 1067 int i, nreaped; 1068 1069 /* 1070 * Process each active queue. 1071 */ 1072 nreaped = 0; 1073 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 1074 if (!STAILQ_EMPTY(&sc->malo_txq[i].active)) 1075 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]); 1076 } 1077 1078 if (nreaped != 0) { 1079 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1080 sc->malo_timer = 0; 1081 malo_start(ifp); 1082 } 1083 } 1084 1085 static int 1086 malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni, 1087 struct malo_txbuf *bf, struct mbuf *m0) 1088 { 1089 #define IEEE80211_DIR_DSTODS(wh) \ 1090 ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 1091 #define IS_DATA_FRAME(wh) \ 1092 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA) 1093 int error, ismcast, iswep; 1094 int copyhdrlen, hdrlen, pktlen; 1095 struct ieee80211_frame *wh; 1096 struct ifnet *ifp = sc->malo_ifp; 1097 struct ieee80211com *ic = ifp->if_l2com; 1098 struct ieee80211vap *vap = ni->ni_vap; 1099 struct malo_txdesc *ds; 1100 struct malo_txrec *tr; 1101 struct malo_txq *txq; 1102 uint16_t qos; 1103 1104 wh = mtod(m0, struct ieee80211_frame *); 1105 iswep = wh->i_fc[1] & IEEE80211_FC1_WEP; 1106 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1107 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh); 1108 pktlen = m0->m_pkthdr.len; 1109 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1110 if (IEEE80211_DIR_DSTODS(wh)) { 1111 qos = *(uint16_t *) 1112 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos); 1113 copyhdrlen -= sizeof(qos); 1114 } else 1115 qos = *(uint16_t *) 1116 (((struct ieee80211_qosframe *) wh)->i_qos); 1117 } else 1118 qos = 0; 1119 1120 if (iswep) { 1121 struct ieee80211_key *k; 1122 1123 /* 1124 * Construct the 802.11 header+trailer for an encrypted 1125 * frame. The only reason this can fail is because of an 1126 * unknown or unsupported cipher/key type. 1127 * 1128 * NB: we do this even though the firmware will ignore 1129 * what we've done for WEP and TKIP as we need the 1130 * ExtIV filled in for CCMP and this also adjusts 1131 * the headers which simplifies our work below. 1132 */ 1133 k = ieee80211_crypto_encap(ni, m0); 1134 if (k == NULL) { 1135 /* 1136 * This can happen when the key is yanked after the 1137 * frame was queued. Just discard the frame; the 1138 * 802.11 layer counts failures and provides 1139 * debugging/diagnostics. 1140 */ 1141 m_freem(m0); 1142 return EIO; 1143 } 1144 1145 /* 1146 * Adjust the packet length for the crypto additions 1147 * done during encap and any other bits that the f/w 1148 * will add later on. 1149 */ 1150 pktlen = m0->m_pkthdr.len; 1151 1152 /* packet header may have moved, reset our local pointer */ 1153 wh = mtod(m0, struct ieee80211_frame *); 1154 } 1155 1156 if (ieee80211_radiotap_active_vap(vap)) { 1157 sc->malo_tx_th.wt_flags = 0; /* XXX */ 1158 if (iswep) 1159 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1160 sc->malo_tx_th.wt_txpower = ni->ni_txpower; 1161 sc->malo_tx_th.wt_antenna = sc->malo_txantenna; 1162 1163 ieee80211_radiotap_tx(vap, m0); 1164 } 1165 1166 /* 1167 * Copy up/down the 802.11 header; the firmware requires 1168 * we present a 2-byte payload length followed by a 1169 * 4-address header (w/o QoS), followed (optionally) by 1170 * any WEP/ExtIV header (but only filled in for CCMP). 1171 * We are assured the mbuf has sufficient headroom to 1172 * prepend in-place by the setup of ic_headroom in 1173 * malo_attach. 1174 */ 1175 if (hdrlen < sizeof(struct malo_txrec)) { 1176 const int space = sizeof(struct malo_txrec) - hdrlen; 1177 if (M_LEADINGSPACE(m0) < space) { 1178 /* NB: should never happen */ 1179 device_printf(sc->malo_dev, 1180 "not enough headroom, need %d found %zd, " 1181 "m_flags 0x%x m_len %d\n", 1182 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len); 1183 ieee80211_dump_pkt(ic, 1184 mtod(m0, const uint8_t *), m0->m_len, 0, -1); 1185 m_freem(m0); 1186 /* XXX stat */ 1187 return EIO; 1188 } 1189 M_PREPEND(m0, space, M_NOWAIT); 1190 } 1191 tr = mtod(m0, struct malo_txrec *); 1192 if (wh != (struct ieee80211_frame *) &tr->wh) 1193 ovbcopy(wh, &tr->wh, hdrlen); 1194 /* 1195 * Note: the "firmware length" is actually the length of the fully 1196 * formed "802.11 payload". That is, it's everything except for 1197 * the 802.11 header. In particular this includes all crypto 1198 * material including the MIC! 1199 */ 1200 tr->fwlen = htole16(pktlen - hdrlen); 1201 1202 /* 1203 * Load the DMA map so any coalescing is done. This 1204 * also calculates the number of descriptors we need. 1205 */ 1206 error = malo_tx_dmasetup(sc, bf, m0); 1207 if (error != 0) 1208 return error; 1209 bf->bf_node = ni; /* NB: held reference */ 1210 m0 = bf->bf_m; /* NB: may have changed */ 1211 tr = mtod(m0, struct malo_txrec *); 1212 wh = (struct ieee80211_frame *)&tr->wh; 1213 1214 /* 1215 * Formulate tx descriptor. 1216 */ 1217 ds = bf->bf_desc; 1218 txq = bf->bf_txq; 1219 1220 ds->qosctrl = qos; /* NB: already little-endian */ 1221 ds->pktptr = htole32(bf->bf_segs[0].ds_addr); 1222 ds->pktlen = htole16(bf->bf_segs[0].ds_len); 1223 /* NB: pPhysNext setup once, don't touch */ 1224 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0; 1225 ds->sap_pktinfo = 0; 1226 ds->format = 0; 1227 1228 /* 1229 * Select transmit rate. 1230 */ 1231 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 1232 case IEEE80211_FC0_TYPE_MGT: 1233 sc->malo_stats.mst_tx_mgmt++; 1234 /* fall thru... */ 1235 case IEEE80211_FC0_TYPE_CTL: 1236 ds->txpriority = 1; 1237 break; 1238 case IEEE80211_FC0_TYPE_DATA: 1239 ds->txpriority = txq->qnum; 1240 break; 1241 default: 1242 if_printf(ifp, "bogus frame type 0x%x (%s)\n", 1243 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__); 1244 /* XXX statistic */ 1245 m_freem(m0); 1246 return EIO; 1247 } 1248 1249 #ifdef MALO_DEBUG 1250 if (IFF_DUMPPKTS_XMIT(sc)) 1251 ieee80211_dump_pkt(ic, 1252 mtod(m0, const uint8_t *)+sizeof(uint16_t), 1253 m0->m_len - sizeof(uint16_t), ds->datarate, -1); 1254 #endif 1255 1256 MALO_TXQ_LOCK(txq); 1257 if (!IS_DATA_FRAME(wh)) 1258 ds->status |= htole32(1); 1259 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED); 1260 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list); 1261 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1262 1263 ifp->if_opackets++; 1264 sc->malo_timer = 5; 1265 MALO_TXQ_UNLOCK(txq); 1266 return 0; 1267 #undef IEEE80211_DIR_DSTODS 1268 } 1269 1270 static void 1271 malo_start(struct ifnet *ifp) 1272 { 1273 struct malo_softc *sc = ifp->if_softc; 1274 struct ieee80211_node *ni; 1275 struct malo_txq *txq = &sc->malo_txq[0]; 1276 struct malo_txbuf *bf = NULL; 1277 struct mbuf *m; 1278 int nqueued = 0; 1279 1280 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) 1281 return; 1282 1283 for (;;) { 1284 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1285 if (m == NULL) 1286 break; 1287 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1288 bf = malo_getbuf(sc, txq); 1289 if (bf == NULL) { 1290 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1291 1292 /* XXX blocks other traffic */ 1293 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1294 sc->malo_stats.mst_tx_qstop++; 1295 break; 1296 } 1297 /* 1298 * Pass the frame to the h/w for transmission. 1299 */ 1300 if (malo_tx_start(sc, ni, bf, m)) { 1301 ifp->if_oerrors++; 1302 if (bf != NULL) { 1303 bf->bf_m = NULL; 1304 bf->bf_node = NULL; 1305 MALO_TXQ_LOCK(txq); 1306 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1307 MALO_TXQ_UNLOCK(txq); 1308 } 1309 ieee80211_free_node(ni); 1310 continue; 1311 } 1312 nqueued++; 1313 1314 if (nqueued >= malo_txcoalesce) { 1315 /* 1316 * Poke the firmware to process queued frames; 1317 * see below about (lack of) locking. 1318 */ 1319 nqueued = 0; 1320 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1321 } 1322 } 1323 1324 if (nqueued) { 1325 /* 1326 * NB: We don't need to lock against tx done because 1327 * this just prods the firmware to check the transmit 1328 * descriptors. The firmware will also start fetching 1329 * descriptors by itself if it notices new ones are 1330 * present when it goes to deliver a tx done interrupt 1331 * to the host. So if we race with tx done processing 1332 * it's ok. Delivering the kick here rather than in 1333 * malo_tx_start is an optimization to avoid poking the 1334 * firmware for each packet. 1335 * 1336 * NB: the queue id isn't used so 0 is ok. 1337 */ 1338 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1339 } 1340 } 1341 1342 static void 1343 malo_watchdog(void *arg) 1344 { 1345 struct malo_softc *sc; 1346 struct ifnet *ifp; 1347 1348 sc = arg; 1349 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1350 if (sc->malo_timer == 0 || --sc->malo_timer > 0) 1351 return; 1352 1353 ifp = sc->malo_ifp; 1354 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->malo_invalid) { 1355 if_printf(ifp, "watchdog timeout\n"); 1356 1357 /* XXX no way to reset h/w. now */ 1358 1359 ifp->if_oerrors++; 1360 sc->malo_stats.mst_watchdog++; 1361 } 1362 } 1363 1364 static int 1365 malo_hal_reset(struct malo_softc *sc) 1366 { 1367 static int first = 0; 1368 struct ifnet *ifp = sc->malo_ifp; 1369 struct ieee80211com *ic = ifp->if_l2com; 1370 struct malo_hal *mh = sc->malo_mh; 1371 1372 if (first == 0) { 1373 /* 1374 * NB: when the device firstly is initialized, sometimes 1375 * firmware could override rx/tx dma registers so we re-set 1376 * these values once. 1377 */ 1378 malo_hal_set_rxtxdma(sc); 1379 first = 1; 1380 } 1381 1382 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna); 1383 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna); 1384 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE); 1385 malo_chan_set(sc, ic->ic_curchan); 1386 1387 /* XXX needs other stuffs? */ 1388 1389 return 1; 1390 } 1391 1392 static __inline struct mbuf * 1393 malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf) 1394 { 1395 struct mbuf *m; 1396 bus_addr_t paddr; 1397 int error; 1398 1399 /* XXX don't need mbuf, just dma buffer */ 1400 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1401 if (m == NULL) { 1402 sc->malo_stats.mst_rx_nombuf++; /* XXX */ 1403 return NULL; 1404 } 1405 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap, 1406 mtod(m, caddr_t), MJUMPAGESIZE, 1407 malo_load_cb, &paddr, BUS_DMA_NOWAIT); 1408 if (error != 0) { 1409 if_printf(sc->malo_ifp, 1410 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1411 m_freem(m); 1412 return NULL; 1413 } 1414 bf->bf_data = paddr; 1415 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 1416 1417 return m; 1418 } 1419 1420 static int 1421 malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf) 1422 { 1423 struct malo_rxdesc *ds; 1424 1425 ds = bf->bf_desc; 1426 if (bf->bf_m == NULL) { 1427 bf->bf_m = malo_getrxmbuf(sc, bf); 1428 if (bf->bf_m == NULL) { 1429 /* mark descriptor to be skipped */ 1430 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN; 1431 /* NB: don't need PREREAD */ 1432 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE); 1433 return ENOMEM; 1434 } 1435 } 1436 1437 /* 1438 * Setup descriptor. 1439 */ 1440 ds->qosctrl = 0; 1441 ds->snr = 0; 1442 ds->status = MALO_RXD_STATUS_IDLE; 1443 ds->channel = 0; 1444 ds->pktlen = htole16(MALO_RXSIZE); 1445 ds->nf = 0; 1446 ds->physbuffdata = htole32(bf->bf_data); 1447 /* NB: don't touch pPhysNext, set once */ 1448 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN; 1449 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1450 1451 return 0; 1452 } 1453 1454 /* 1455 * Setup the rx data structures. This should only be done once or we may get 1456 * out of sync with the firmware. 1457 */ 1458 static int 1459 malo_startrecv(struct malo_softc *sc) 1460 { 1461 struct malo_rxbuf *bf, *prev; 1462 struct malo_rxdesc *ds; 1463 1464 if (sc->malo_recvsetup == 1) { 1465 malo_mode_init(sc); /* set filters, etc. */ 1466 return 0; 1467 } 1468 1469 prev = NULL; 1470 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 1471 int error = malo_rxbuf_init(sc, bf); 1472 if (error != 0) { 1473 DPRINTF(sc, MALO_DEBUG_RECV, 1474 "%s: malo_rxbuf_init failed %d\n", 1475 __func__, error); 1476 return error; 1477 } 1478 if (prev != NULL) { 1479 ds = prev->bf_desc; 1480 ds->physnext = htole32(bf->bf_daddr); 1481 } 1482 prev = bf; 1483 } 1484 if (prev != NULL) { 1485 ds = prev->bf_desc; 1486 ds->physnext = 1487 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr); 1488 } 1489 1490 sc->malo_recvsetup = 1; 1491 1492 malo_mode_init(sc); /* set filters, etc. */ 1493 1494 return 0; 1495 } 1496 1497 static void 1498 malo_init_locked(struct malo_softc *sc) 1499 { 1500 struct ifnet *ifp = sc->malo_ifp; 1501 struct malo_hal *mh = sc->malo_mh; 1502 int error; 1503 1504 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1505 __func__, ifp->if_flags); 1506 1507 MALO_LOCK_ASSERT(sc); 1508 1509 /* 1510 * Stop anything previously setup. This is safe whether this is 1511 * the first time through or not. 1512 */ 1513 malo_stop_locked(ifp, 0); 1514 1515 /* 1516 * Push state to the firmware. 1517 */ 1518 if (!malo_hal_reset(sc)) { 1519 if_printf(ifp, "%s: unable to reset hardware\n", __func__); 1520 return; 1521 } 1522 1523 /* 1524 * Setup recv (once); transmit is already good to go. 1525 */ 1526 error = malo_startrecv(sc); 1527 if (error != 0) { 1528 if_printf(ifp, "%s: unable to start recv logic, error %d\n", 1529 __func__, error); 1530 return; 1531 } 1532 1533 /* 1534 * Enable interrupts. 1535 */ 1536 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY 1537 | MALO_A2HRIC_BIT_TX_DONE 1538 | MALO_A2HRIC_BIT_OPC_DONE 1539 | MALO_A2HRIC_BIT_MAC_EVENT 1540 | MALO_A2HRIC_BIT_RX_PROBLEM 1541 | MALO_A2HRIC_BIT_ICV_ERROR 1542 | MALO_A2HRIC_BIT_RADAR_DETECT 1543 | MALO_A2HRIC_BIT_CHAN_SWITCH; 1544 1545 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1546 malo_hal_intrset(mh, sc->malo_imask); 1547 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1548 } 1549 1550 static void 1551 malo_init(void *arg) 1552 { 1553 struct malo_softc *sc = (struct malo_softc *) arg; 1554 struct ifnet *ifp = sc->malo_ifp; 1555 struct ieee80211com *ic = ifp->if_l2com; 1556 1557 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1558 __func__, ifp->if_flags); 1559 1560 MALO_LOCK(sc); 1561 malo_init_locked(sc); 1562 1563 MALO_UNLOCK(sc); 1564 1565 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1566 ieee80211_start_all(ic); /* start all vap's */ 1567 } 1568 1569 /* 1570 * Set the multicast filter contents into the hardware. 1571 */ 1572 static void 1573 malo_setmcastfilter(struct malo_softc *sc) 1574 { 1575 struct ifnet *ifp = sc->malo_ifp; 1576 struct ieee80211com *ic = ifp->if_l2com; 1577 struct ifmultiaddr *ifma; 1578 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX]; 1579 uint8_t *mp; 1580 int nmc; 1581 1582 mp = macs; 1583 nmc = 0; 1584 1585 if (ic->ic_opmode == IEEE80211_M_MONITOR || 1586 (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC))) 1587 goto all; 1588 1589 if_maddr_rlock(ifp); 1590 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1591 if (ifma->ifma_addr->sa_family != AF_LINK) 1592 continue; 1593 1594 if (nmc == MALO_HAL_MCAST_MAX) { 1595 ifp->if_flags |= IFF_ALLMULTI; 1596 if_maddr_runlock(ifp); 1597 goto all; 1598 } 1599 IEEE80211_ADDR_COPY(mp, 1600 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1601 1602 mp += IEEE80211_ADDR_LEN, nmc++; 1603 } 1604 if_maddr_runlock(ifp); 1605 1606 malo_hal_setmcast(sc->malo_mh, nmc, macs); 1607 1608 all: 1609 /* 1610 * XXX we don't know how to set the f/w for supporting 1611 * IFF_ALLMULTI | IFF_PROMISC cases 1612 */ 1613 return; 1614 } 1615 1616 static int 1617 malo_mode_init(struct malo_softc *sc) 1618 { 1619 struct ifnet *ifp = sc->malo_ifp; 1620 struct ieee80211com *ic = ifp->if_l2com; 1621 struct malo_hal *mh = sc->malo_mh; 1622 1623 /* 1624 * NB: Ignore promisc in hostap mode; it's set by the 1625 * bridge. This is wrong but we have no way to 1626 * identify internal requests (from the bridge) 1627 * versus external requests such as for tcpdump. 1628 */ 1629 malo_hal_setpromisc(mh, (ifp->if_flags & IFF_PROMISC) && 1630 ic->ic_opmode != IEEE80211_M_HOSTAP); 1631 malo_setmcastfilter(sc); 1632 1633 return ENXIO; 1634 } 1635 1636 static void 1637 malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq) 1638 { 1639 struct ieee80211_node *ni; 1640 struct malo_txbuf *bf; 1641 u_int ix; 1642 1643 /* 1644 * NB: this assumes output has been stopped and 1645 * we do not need to block malo_tx_tasklet 1646 */ 1647 for (ix = 0;; ix++) { 1648 MALO_TXQ_LOCK(txq); 1649 bf = STAILQ_FIRST(&txq->active); 1650 if (bf == NULL) { 1651 MALO_TXQ_UNLOCK(txq); 1652 break; 1653 } 1654 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 1655 MALO_TXQ_UNLOCK(txq); 1656 #ifdef MALO_DEBUG 1657 if (sc->malo_debug & MALO_DEBUG_RESET) { 1658 struct ifnet *ifp = sc->malo_ifp; 1659 struct ieee80211com *ic = ifp->if_l2com; 1660 const struct malo_txrec *tr = 1661 mtod(bf->bf_m, const struct malo_txrec *); 1662 malo_printtxbuf(bf, txq->qnum, ix); 1663 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh, 1664 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1); 1665 } 1666 #endif /* MALO_DEBUG */ 1667 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1668 ni = bf->bf_node; 1669 bf->bf_node = NULL; 1670 if (ni != NULL) { 1671 /* 1672 * Reclaim node reference. 1673 */ 1674 ieee80211_free_node(ni); 1675 } 1676 m_freem(bf->bf_m); 1677 bf->bf_m = NULL; 1678 1679 MALO_TXQ_LOCK(txq); 1680 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1681 txq->nfree++; 1682 MALO_TXQ_UNLOCK(txq); 1683 } 1684 } 1685 1686 static void 1687 malo_stop_locked(struct ifnet *ifp, int disable) 1688 { 1689 struct malo_softc *sc = ifp->if_softc; 1690 struct malo_hal *mh = sc->malo_mh; 1691 int i; 1692 1693 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u if_flags 0x%x\n", 1694 __func__, sc->malo_invalid, ifp->if_flags); 1695 1696 MALO_LOCK_ASSERT(sc); 1697 1698 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1699 return; 1700 1701 /* 1702 * Shutdown the hardware and driver: 1703 * disable interrupts 1704 * turn off the radio 1705 * drain and release tx queues 1706 * 1707 * Note that some of this work is not possible if the hardware 1708 * is gone (invalid). 1709 */ 1710 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1711 callout_stop(&sc->malo_watchdog_timer); 1712 sc->malo_timer = 0; 1713 /* diable interrupt. */ 1714 malo_hal_intrset(mh, 0); 1715 /* turn off the radio. */ 1716 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE); 1717 1718 /* drain and release tx queues. */ 1719 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 1720 malo_tx_draintxq(sc, &sc->malo_txq[i]); 1721 } 1722 1723 static int 1724 malo_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1725 { 1726 #define MALO_IS_RUNNING(ifp) \ 1727 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1728 struct malo_softc *sc = ifp->if_softc; 1729 struct ieee80211com *ic = ifp->if_l2com; 1730 struct ifreq *ifr = (struct ifreq *) data; 1731 int error = 0, startall = 0; 1732 1733 MALO_LOCK(sc); 1734 switch (cmd) { 1735 case SIOCSIFFLAGS: 1736 if (MALO_IS_RUNNING(ifp)) { 1737 /* 1738 * To avoid rescanning another access point, 1739 * do not call malo_init() here. Instead, 1740 * only reflect promisc mode settings. 1741 */ 1742 malo_mode_init(sc); 1743 } else if (ifp->if_flags & IFF_UP) { 1744 /* 1745 * Beware of being called during attach/detach 1746 * to reset promiscuous mode. In that case we 1747 * will still be marked UP but not RUNNING. 1748 * However trying to re-init the interface 1749 * is the wrong thing to do as we've already 1750 * torn down much of our state. There's 1751 * probably a better way to deal with this. 1752 */ 1753 if (!sc->malo_invalid) { 1754 malo_init_locked(sc); 1755 startall = 1; 1756 } 1757 } else 1758 malo_stop_locked(ifp, 1); 1759 break; 1760 case SIOCGIFMEDIA: 1761 case SIOCSIFMEDIA: 1762 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1763 break; 1764 default: 1765 error = ether_ioctl(ifp, cmd, data); 1766 break; 1767 } 1768 MALO_UNLOCK(sc); 1769 1770 if (startall) 1771 ieee80211_start_all(ic); 1772 return error; 1773 #undef MALO_IS_RUNNING 1774 } 1775 1776 /* 1777 * Callback from the 802.11 layer to update the slot time 1778 * based on the current setting. We use it to notify the 1779 * firmware of ERP changes and the f/w takes care of things 1780 * like slot time and preamble. 1781 */ 1782 static void 1783 malo_updateslot(struct ifnet *ifp) 1784 { 1785 struct malo_softc *sc = ifp->if_softc; 1786 struct ieee80211com *ic = ifp->if_l2com; 1787 struct malo_hal *mh = sc->malo_mh; 1788 int error; 1789 1790 /* NB: can be called early; suppress needless cmds */ 1791 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1792 return; 1793 1794 DPRINTF(sc, MALO_DEBUG_RESET, 1795 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n", 1796 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags, 1797 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags); 1798 1799 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1800 error = malo_hal_set_slot(mh, 1); 1801 else 1802 error = malo_hal_set_slot(mh, 0); 1803 1804 if (error != 0) 1805 device_printf(sc->malo_dev, "setting %s slot failed\n", 1806 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long"); 1807 } 1808 1809 static int 1810 malo_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1811 { 1812 struct ieee80211com *ic = vap->iv_ic; 1813 struct malo_softc *sc = ic->ic_ifp->if_softc; 1814 struct malo_hal *mh = sc->malo_mh; 1815 int error; 1816 1817 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1818 ieee80211_state_name[vap->iv_state], 1819 ieee80211_state_name[nstate]); 1820 1821 /* 1822 * Invoke the net80211 layer first so iv_bss is setup. 1823 */ 1824 error = MALO_VAP(vap)->malo_newstate(vap, nstate, arg); 1825 if (error != 0) 1826 return error; 1827 1828 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1829 struct ieee80211_node *ni = vap->iv_bss; 1830 enum ieee80211_phymode mode = ieee80211_chan2mode(ni->ni_chan); 1831 const struct ieee80211_txparam *tp = &vap->iv_txparms[mode]; 1832 1833 DPRINTF(sc, MALO_DEBUG_STATE, 1834 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s " 1835 "capinfo 0x%04x chan %d associd 0x%x mode %d rate %d\n", 1836 vap->iv_ifp->if_xname, __func__, vap->iv_flags, 1837 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo, 1838 ieee80211_chan2ieee(ic, ic->ic_curchan), 1839 ni->ni_associd, mode, tp->ucastrate); 1840 1841 malo_hal_setradio(mh, 1, 1842 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? 1843 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE); 1844 malo_hal_setassocid(sc->malo_mh, ni->ni_bssid, ni->ni_associd); 1845 malo_hal_set_rate(mh, mode, 1846 tp->ucastrate == IEEE80211_FIXED_RATE_NONE ? 1847 0 : malo_fix2rate(tp->ucastrate)); 1848 } 1849 return 0; 1850 } 1851 1852 static int 1853 malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1854 const struct ieee80211_bpf_params *params) 1855 { 1856 struct ieee80211com *ic = ni->ni_ic; 1857 struct ifnet *ifp = ic->ic_ifp; 1858 struct malo_softc *sc = ifp->if_softc; 1859 struct malo_txbuf *bf; 1860 struct malo_txq *txq; 1861 1862 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) { 1863 ieee80211_free_node(ni); 1864 m_freem(m); 1865 return ENETDOWN; 1866 } 1867 1868 /* 1869 * Grab a TX buffer and associated resources. Note that we depend 1870 * on the classification by the 802.11 layer to get to the right h/w 1871 * queue. Management frames must ALWAYS go on queue 1 but we 1872 * cannot just force that here because we may receive non-mgt frames. 1873 */ 1874 txq = &sc->malo_txq[0]; 1875 bf = malo_getbuf(sc, txq); 1876 if (bf == NULL) { 1877 /* XXX blocks other traffic */ 1878 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1879 ieee80211_free_node(ni); 1880 m_freem(m); 1881 return ENOBUFS; 1882 } 1883 1884 /* 1885 * Pass the frame to the h/w for transmission. 1886 */ 1887 if (malo_tx_start(sc, ni, bf, m) != 0) { 1888 ifp->if_oerrors++; 1889 bf->bf_m = NULL; 1890 bf->bf_node = NULL; 1891 MALO_TXQ_LOCK(txq); 1892 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1893 txq->nfree++; 1894 MALO_TXQ_UNLOCK(txq); 1895 1896 ieee80211_free_node(ni); 1897 return EIO; /* XXX */ 1898 } 1899 1900 /* 1901 * NB: We don't need to lock against tx done because this just 1902 * prods the firmware to check the transmit descriptors. The firmware 1903 * will also start fetching descriptors by itself if it notices 1904 * new ones are present when it goes to deliver a tx done interrupt 1905 * to the host. So if we race with tx done processing it's ok. 1906 * Delivering the kick here rather than in malo_tx_start is 1907 * an optimization to avoid poking the firmware for each packet. 1908 * 1909 * NB: the queue id isn't used so 0 is ok. 1910 */ 1911 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1912 1913 return 0; 1914 } 1915 1916 static void 1917 malo_sysctlattach(struct malo_softc *sc) 1918 { 1919 #ifdef MALO_DEBUG 1920 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev); 1921 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev); 1922 1923 sc->malo_debug = malo_debug; 1924 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 1925 "debug", CTLFLAG_RW, &sc->malo_debug, 0, 1926 "control debugging printfs"); 1927 #endif 1928 } 1929 1930 static void 1931 malo_announce(struct malo_softc *sc) 1932 { 1933 struct ifnet *ifp = sc->malo_ifp; 1934 1935 if_printf(ifp, "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n", 1936 sc->malo_hwspecs.hwversion, 1937 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff, 1938 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff, 1939 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff, 1940 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff, 1941 sc->malo_hwspecs.regioncode); 1942 1943 if (bootverbose || malo_rxbuf != MALO_RXBUF) 1944 if_printf(ifp, "using %u rx buffers\n", malo_rxbuf); 1945 if (bootverbose || malo_txbuf != MALO_TXBUF) 1946 if_printf(ifp, "using %u tx buffers\n", malo_txbuf); 1947 } 1948 1949 /* 1950 * Convert net80211 channel to a HAL channel. 1951 */ 1952 static void 1953 malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan) 1954 { 1955 hc->channel = chan->ic_ieee; 1956 1957 *(uint32_t *)&hc->flags = 0; 1958 if (IEEE80211_IS_CHAN_2GHZ(chan)) 1959 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ; 1960 } 1961 1962 /* 1963 * Set/change channels. If the channel is really being changed, 1964 * it's done by reseting the chip. To accomplish this we must 1965 * first cleanup any pending DMA, then restart stuff after a la 1966 * malo_init. 1967 */ 1968 static int 1969 malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan) 1970 { 1971 struct malo_hal *mh = sc->malo_mh; 1972 struct malo_hal_channel hchan; 1973 1974 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n", 1975 __func__, chan->ic_freq, chan->ic_flags); 1976 1977 /* 1978 * Convert to a HAL channel description with the flags constrained 1979 * to reflect the current operating mode. 1980 */ 1981 malo_mapchan(&hchan, chan); 1982 malo_hal_intrset(mh, 0); /* disable interrupts */ 1983 malo_hal_setchannel(mh, &hchan); 1984 malo_hal_settxpower(mh, &hchan); 1985 1986 /* 1987 * Update internal state. 1988 */ 1989 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq); 1990 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq); 1991 if (IEEE80211_IS_CHAN_ANYG(chan)) { 1992 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G); 1993 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G); 1994 } else { 1995 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B); 1996 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B); 1997 } 1998 sc->malo_curchan = hchan; 1999 malo_hal_intrset(mh, sc->malo_imask); 2000 2001 return 0; 2002 } 2003 2004 static void 2005 malo_scan_start(struct ieee80211com *ic) 2006 { 2007 struct ifnet *ifp = ic->ic_ifp; 2008 struct malo_softc *sc = ifp->if_softc; 2009 2010 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2011 } 2012 2013 static void 2014 malo_scan_end(struct ieee80211com *ic) 2015 { 2016 struct ifnet *ifp = ic->ic_ifp; 2017 struct malo_softc *sc = ifp->if_softc; 2018 2019 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2020 } 2021 2022 static void 2023 malo_set_channel(struct ieee80211com *ic) 2024 { 2025 struct ifnet *ifp = ic->ic_ifp; 2026 struct malo_softc *sc = ifp->if_softc; 2027 2028 (void) malo_chan_set(sc, ic->ic_curchan); 2029 } 2030 2031 static void 2032 malo_rx_proc(void *arg, int npending) 2033 { 2034 #define IEEE80211_DIR_DSTODS(wh) \ 2035 ((((const struct ieee80211_frame *)wh)->i_fc[1] & \ 2036 IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 2037 struct malo_softc *sc = arg; 2038 struct ifnet *ifp = sc->malo_ifp; 2039 struct ieee80211com *ic = ifp->if_l2com; 2040 struct malo_rxbuf *bf; 2041 struct malo_rxdesc *ds; 2042 struct mbuf *m, *mnew; 2043 struct ieee80211_qosframe *wh; 2044 struct ieee80211_qosframe_addr4 *wh4; 2045 struct ieee80211_node *ni; 2046 int off, len, hdrlen, pktlen, rssi, ntodo; 2047 uint8_t *data, status; 2048 uint32_t readptr, writeptr; 2049 2050 DPRINTF(sc, MALO_DEBUG_RX_PROC, 2051 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n", 2052 __func__, npending, 2053 sc->malo_hwspecs.rxdesc_read, 2054 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read), 2055 sc->malo_hwspecs.rxdesc_write, 2056 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write)); 2057 2058 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read); 2059 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write); 2060 if (readptr == writeptr) 2061 return; 2062 2063 bf = sc->malo_rxnext; 2064 for (ntodo = malo_rxquota; ntodo > 0 && readptr != writeptr; ntodo--) { 2065 if (bf == NULL) { 2066 bf = STAILQ_FIRST(&sc->malo_rxbuf); 2067 break; 2068 } 2069 ds = bf->bf_desc; 2070 if (bf->bf_m == NULL) { 2071 /* 2072 * If data allocation failed previously there 2073 * will be no buffer; try again to re-populate it. 2074 * Note the firmware will not advance to the next 2075 * descriptor with a dma buffer so we must mimic 2076 * this or we'll get out of sync. 2077 */ 2078 DPRINTF(sc, MALO_DEBUG_ANY, 2079 "%s: rx buf w/o dma memory\n", __func__); 2080 (void)malo_rxbuf_init(sc, bf); 2081 break; 2082 } 2083 MALO_RXDESC_SYNC(sc, ds, 2084 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2085 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN) 2086 break; 2087 2088 readptr = le32toh(ds->physnext); 2089 2090 #ifdef MALO_DEBUG 2091 if (sc->malo_debug & MALO_DEBUG_RECV_DESC) 2092 malo_printrxbuf(bf, 0); 2093 #endif 2094 status = ds->status; 2095 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) { 2096 ifp->if_ierrors++; 2097 goto rx_next; 2098 } 2099 /* 2100 * Sync the data buffer. 2101 */ 2102 len = le16toh(ds->pktlen); 2103 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 2104 BUS_DMASYNC_POSTREAD); 2105 /* 2106 * The 802.11 header is provided all or in part at the front; 2107 * use it to calculate the true size of the header that we'll 2108 * construct below. We use this to figure out where to copy 2109 * payload prior to constructing the header. 2110 */ 2111 m = bf->bf_m; 2112 data = mtod(m, uint8_t *); 2113 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t)); 2114 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4); 2115 2116 /* 2117 * Calculate RSSI. XXX wrong 2118 */ 2119 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */ 2120 if (rssi > 100) 2121 rssi = 100; 2122 2123 pktlen = hdrlen + (len - off); 2124 /* 2125 * NB: we know our frame is at least as large as 2126 * IEEE80211_MIN_LEN because there is a 4-address frame at 2127 * the front. Hence there's no need to vet the packet length. 2128 * If the frame in fact is too small it should be discarded 2129 * at the net80211 layer. 2130 */ 2131 2132 /* XXX don't need mbuf, just dma buffer */ 2133 mnew = malo_getrxmbuf(sc, bf); 2134 if (mnew == NULL) { 2135 ifp->if_ierrors++; 2136 goto rx_next; 2137 } 2138 /* 2139 * Attach the dma buffer to the mbuf; malo_rxbuf_init will 2140 * re-setup the rx descriptor using the replacement dma 2141 * buffer we just installed above. 2142 */ 2143 bf->bf_m = mnew; 2144 m->m_data += off - hdrlen; 2145 m->m_pkthdr.len = m->m_len = pktlen; 2146 m->m_pkthdr.rcvif = ifp; 2147 2148 /* 2149 * Piece 802.11 header together. 2150 */ 2151 wh = mtod(m, struct ieee80211_qosframe *); 2152 /* NB: don't need to do this sometimes but ... */ 2153 /* XXX special case so we can memcpy after m_devget? */ 2154 ovbcopy(data + sizeof(uint16_t), wh, hdrlen); 2155 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2156 if (IEEE80211_DIR_DSTODS(wh)) { 2157 wh4 = mtod(m, 2158 struct ieee80211_qosframe_addr4*); 2159 *(uint16_t *)wh4->i_qos = ds->qosctrl; 2160 } else { 2161 *(uint16_t *)wh->i_qos = ds->qosctrl; 2162 } 2163 } 2164 if (ieee80211_radiotap_active(ic)) { 2165 sc->malo_rx_th.wr_flags = 0; 2166 sc->malo_rx_th.wr_rate = ds->rate; 2167 sc->malo_rx_th.wr_antsignal = rssi; 2168 sc->malo_rx_th.wr_antnoise = ds->nf; 2169 } 2170 #ifdef MALO_DEBUG 2171 if (IFF_DUMPPKTS_RECV(sc, wh)) { 2172 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 2173 len, ds->rate, rssi); 2174 } 2175 #endif 2176 ifp->if_ipackets++; 2177 2178 /* dispatch */ 2179 ni = ieee80211_find_rxnode(ic, 2180 (struct ieee80211_frame_min *)wh); 2181 if (ni != NULL) { 2182 (void) ieee80211_input(ni, m, rssi, ds->nf); 2183 ieee80211_free_node(ni); 2184 } else 2185 (void) ieee80211_input_all(ic, m, rssi, ds->nf); 2186 rx_next: 2187 /* NB: ignore ENOMEM so we process more descriptors */ 2188 (void) malo_rxbuf_init(sc, bf); 2189 bf = STAILQ_NEXT(bf, bf_list); 2190 } 2191 2192 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr); 2193 sc->malo_rxnext = bf; 2194 2195 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 && 2196 !IFQ_IS_EMPTY(&ifp->if_snd)) 2197 malo_start(ifp); 2198 #undef IEEE80211_DIR_DSTODS 2199 } 2200 2201 static void 2202 malo_stop(struct ifnet *ifp, int disable) 2203 { 2204 struct malo_softc *sc = ifp->if_softc; 2205 2206 MALO_LOCK(sc); 2207 malo_stop_locked(ifp, disable); 2208 MALO_UNLOCK(sc); 2209 } 2210 2211 /* 2212 * Reclaim all tx queue resources. 2213 */ 2214 static void 2215 malo_tx_cleanup(struct malo_softc *sc) 2216 { 2217 int i; 2218 2219 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 2220 malo_tx_cleanupq(sc, &sc->malo_txq[i]); 2221 } 2222 2223 int 2224 malo_detach(struct malo_softc *sc) 2225 { 2226 struct ifnet *ifp = sc->malo_ifp; 2227 struct ieee80211com *ic = ifp->if_l2com; 2228 2229 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2230 __func__, ifp->if_flags); 2231 2232 malo_stop(ifp, 1); 2233 2234 if (sc->malo_tq != NULL) { 2235 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask); 2236 taskqueue_drain(sc->malo_tq, &sc->malo_txtask); 2237 taskqueue_free(sc->malo_tq); 2238 sc->malo_tq = NULL; 2239 } 2240 2241 /* 2242 * NB: the order of these is important: 2243 * o call the 802.11 layer before detaching the hal to 2244 * insure callbacks into the driver to delete global 2245 * key cache entries can be handled 2246 * o reclaim the tx queue data structures after calling 2247 * the 802.11 layer as we'll get called back to reclaim 2248 * node state and potentially want to use them 2249 * o to cleanup the tx queues the hal is called, so detach 2250 * it last 2251 * Other than that, it's straightforward... 2252 */ 2253 ieee80211_ifdetach(ic); 2254 callout_drain(&sc->malo_watchdog_timer); 2255 malo_dma_cleanup(sc); 2256 malo_tx_cleanup(sc); 2257 malo_hal_detach(sc->malo_mh); 2258 if_free(ifp); 2259 2260 MALO_LOCK_DESTROY(sc); 2261 2262 return 0; 2263 } 2264 2265 void 2266 malo_shutdown(struct malo_softc *sc) 2267 { 2268 malo_stop(sc->malo_ifp, 1); 2269 } 2270 2271 void 2272 malo_suspend(struct malo_softc *sc) 2273 { 2274 struct ifnet *ifp = sc->malo_ifp; 2275 2276 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2277 __func__, ifp->if_flags); 2278 2279 malo_stop(ifp, 1); 2280 } 2281 2282 void 2283 malo_resume(struct malo_softc *sc) 2284 { 2285 struct ifnet *ifp = sc->malo_ifp; 2286 2287 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2288 __func__, ifp->if_flags); 2289 2290 if (ifp->if_flags & IFF_UP) 2291 malo_init(sc); 2292 } 2293