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/malloc.h> 43 #include <sys/socket.h> 44 #include <sys/sockio.h> 45 #include <sys/sysctl.h> 46 #include <sys/taskqueue.h> 47 48 #include <machine/bus.h> 49 #include <sys/bus.h> 50 51 #include <net/if.h> 52 #include <net/if_var.h> 53 #include <net/if_dl.h> 54 #include <net/if_media.h> 55 #include <net/if_types.h> 56 #include <net/ethernet.h> 57 58 #include <net80211/ieee80211_var.h> 59 #include <net80211/ieee80211_regdomain.h> 60 61 #include <net/bpf.h> 62 63 #include <dev/malo/if_malo.h> 64 65 SYSCTL_NODE(_hw, OID_AUTO, malo, CTLFLAG_RD, 0, 66 "Marvell 88w8335 driver parameters"); 67 68 static int malo_txcoalesce = 8; /* # tx pkts to q before poking f/w*/ 69 SYSCTL_INT(_hw_malo, OID_AUTO, txcoalesce, CTLFLAG_RWTUN, &malo_txcoalesce, 70 0, "tx buffers to send at once"); 71 static int malo_rxbuf = MALO_RXBUF; /* # rx buffers to allocate */ 72 SYSCTL_INT(_hw_malo, OID_AUTO, rxbuf, CTLFLAG_RWTUN, &malo_rxbuf, 73 0, "rx buffers allocated"); 74 static int malo_rxquota = MALO_RXBUF; /* # max buffers to process */ 75 SYSCTL_INT(_hw_malo, OID_AUTO, rxquota, CTLFLAG_RWTUN, &malo_rxquota, 76 0, "max rx buffers to process per interrupt"); 77 static int malo_txbuf = MALO_TXBUF; /* # tx buffers to allocate */ 78 SYSCTL_INT(_hw_malo, OID_AUTO, txbuf, CTLFLAG_RWTUN, &malo_txbuf, 79 0, "tx buffers allocated"); 80 81 #ifdef MALO_DEBUG 82 static int malo_debug = 0; 83 SYSCTL_INT(_hw_malo, OID_AUTO, debug, CTLFLAG_RWTUN, &malo_debug, 84 0, "control debugging printfs"); 85 enum { 86 MALO_DEBUG_XMIT = 0x00000001, /* basic xmit operation */ 87 MALO_DEBUG_XMIT_DESC = 0x00000002, /* xmit descriptors */ 88 MALO_DEBUG_RECV = 0x00000004, /* basic recv operation */ 89 MALO_DEBUG_RECV_DESC = 0x00000008, /* recv descriptors */ 90 MALO_DEBUG_RESET = 0x00000010, /* reset processing */ 91 MALO_DEBUG_INTR = 0x00000040, /* ISR */ 92 MALO_DEBUG_TX_PROC = 0x00000080, /* tx ISR proc */ 93 MALO_DEBUG_RX_PROC = 0x00000100, /* rx ISR proc */ 94 MALO_DEBUG_STATE = 0x00000400, /* 802.11 state transitions */ 95 MALO_DEBUG_NODE = 0x00000800, /* node management */ 96 MALO_DEBUG_RECV_ALL = 0x00001000, /* trace all frames (beacons) */ 97 MALO_DEBUG_FW = 0x00008000, /* firmware */ 98 MALO_DEBUG_ANY = 0xffffffff 99 }; 100 #define IS_BEACON(wh) \ 101 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK | \ 102 IEEE80211_FC0_SUBTYPE_MASK)) == \ 103 (IEEE80211_FC0_TYPE_MGT|IEEE80211_FC0_SUBTYPE_BEACON)) 104 #define IFF_DUMPPKTS_RECV(sc, wh) \ 105 (((sc->malo_debug & MALO_DEBUG_RECV) && \ 106 ((sc->malo_debug & MALO_DEBUG_RECV_ALL) || !IS_BEACON(wh)))) 107 #define IFF_DUMPPKTS_XMIT(sc) \ 108 (sc->malo_debug & MALO_DEBUG_XMIT) 109 #define DPRINTF(sc, m, fmt, ...) do { \ 110 if (sc->malo_debug & (m)) \ 111 printf(fmt, __VA_ARGS__); \ 112 } while (0) 113 #else 114 #define DPRINTF(sc, m, fmt, ...) do { \ 115 (void) sc; \ 116 } while (0) 117 #endif 118 119 static MALLOC_DEFINE(M_MALODEV, "malodev", "malo driver dma buffers"); 120 121 static struct ieee80211vap *malo_vap_create(struct ieee80211com *, 122 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 123 const uint8_t [IEEE80211_ADDR_LEN], 124 const uint8_t [IEEE80211_ADDR_LEN]); 125 static void malo_vap_delete(struct ieee80211vap *); 126 static int malo_dma_setup(struct malo_softc *); 127 static int malo_setup_hwdma(struct malo_softc *); 128 static void malo_txq_init(struct malo_softc *, struct malo_txq *, int); 129 static void malo_tx_cleanupq(struct malo_softc *, struct malo_txq *); 130 static void malo_parent(struct ieee80211com *); 131 static int malo_transmit(struct ieee80211com *, struct mbuf *); 132 static void malo_start(struct malo_softc *); 133 static void malo_watchdog(void *); 134 static void malo_updateslot(struct ieee80211com *); 135 static int malo_newstate(struct ieee80211vap *, enum ieee80211_state, int); 136 static void malo_scan_start(struct ieee80211com *); 137 static void malo_scan_end(struct ieee80211com *); 138 static void malo_set_channel(struct ieee80211com *); 139 static int malo_raw_xmit(struct ieee80211_node *, struct mbuf *, 140 const struct ieee80211_bpf_params *); 141 static void malo_sysctlattach(struct malo_softc *); 142 static void malo_announce(struct malo_softc *); 143 static void malo_dma_cleanup(struct malo_softc *); 144 static void malo_stop(struct malo_softc *); 145 static int malo_chan_set(struct malo_softc *, struct ieee80211_channel *); 146 static int malo_mode_init(struct malo_softc *); 147 static void malo_tx_proc(void *, int); 148 static void malo_rx_proc(void *, int); 149 static void malo_init(void *); 150 151 /* 152 * Read/Write shorthands for accesses to BAR 0. Note that all BAR 1 153 * operations are done in the "hal" except getting H/W MAC address at 154 * malo_attach and there should be no reference to them here. 155 */ 156 static uint32_t 157 malo_bar0_read4(struct malo_softc *sc, bus_size_t off) 158 { 159 return bus_space_read_4(sc->malo_io0t, sc->malo_io0h, off); 160 } 161 162 static void 163 malo_bar0_write4(struct malo_softc *sc, bus_size_t off, uint32_t val) 164 { 165 DPRINTF(sc, MALO_DEBUG_FW, "%s: off 0x%jx val 0x%x\n", 166 __func__, (uintmax_t)off, val); 167 168 bus_space_write_4(sc->malo_io0t, sc->malo_io0h, off, val); 169 } 170 171 int 172 malo_attach(uint16_t devid, struct malo_softc *sc) 173 { 174 struct ieee80211com *ic = &sc->malo_ic; 175 struct malo_hal *mh; 176 int error; 177 uint8_t bands[howmany(IEEE80211_MODE_MAX, 8)]; 178 179 MALO_LOCK_INIT(sc); 180 callout_init_mtx(&sc->malo_watchdog_timer, &sc->malo_mtx, 0); 181 mbufq_init(&sc->malo_snd, ifqmaxlen); 182 183 mh = malo_hal_attach(sc->malo_dev, devid, 184 sc->malo_io1h, sc->malo_io1t, sc->malo_dmat); 185 if (mh == NULL) { 186 device_printf(sc->malo_dev, "unable to attach HAL\n"); 187 error = EIO; 188 goto bad; 189 } 190 sc->malo_mh = mh; 191 192 /* 193 * Load firmware so we can get setup. We arbitrarily pick station 194 * firmware; we'll re-load firmware as needed so setting up 195 * the wrong mode isn't a big deal. 196 */ 197 error = malo_hal_fwload(mh, "malo8335-h", "malo8335-m"); 198 if (error != 0) { 199 device_printf(sc->malo_dev, "unable to setup firmware\n"); 200 goto bad1; 201 } 202 /* XXX gethwspecs() extracts correct informations? not maybe! */ 203 error = malo_hal_gethwspecs(mh, &sc->malo_hwspecs); 204 if (error != 0) { 205 device_printf(sc->malo_dev, "unable to fetch h/w specs\n"); 206 goto bad1; 207 } 208 209 DPRINTF(sc, MALO_DEBUG_FW, 210 "malo_hal_gethwspecs: hwversion 0x%x hostif 0x%x" 211 "maxnum_wcb 0x%x maxnum_mcaddr 0x%x maxnum_tx_wcb 0x%x" 212 "regioncode 0x%x num_antenna 0x%x fw_releasenum 0x%x" 213 "wcbbase0 0x%x rxdesc_read 0x%x rxdesc_write 0x%x" 214 "ul_fw_awakecookie 0x%x w[4] = %x %x %x %x", 215 sc->malo_hwspecs.hwversion, 216 sc->malo_hwspecs.hostinterface, sc->malo_hwspecs.maxnum_wcb, 217 sc->malo_hwspecs.maxnum_mcaddr, sc->malo_hwspecs.maxnum_tx_wcb, 218 sc->malo_hwspecs.regioncode, sc->malo_hwspecs.num_antenna, 219 sc->malo_hwspecs.fw_releasenum, sc->malo_hwspecs.wcbbase0, 220 sc->malo_hwspecs.rxdesc_read, sc->malo_hwspecs.rxdesc_write, 221 sc->malo_hwspecs.ul_fw_awakecookie, 222 sc->malo_hwspecs.wcbbase[0], sc->malo_hwspecs.wcbbase[1], 223 sc->malo_hwspecs.wcbbase[2], sc->malo_hwspecs.wcbbase[3]); 224 225 /* NB: firmware looks that it does not export regdomain info API. */ 226 memset(bands, 0, sizeof(bands)); 227 setbit(bands, IEEE80211_MODE_11B); 228 setbit(bands, IEEE80211_MODE_11G); 229 ieee80211_init_channels(ic, NULL, bands); 230 231 sc->malo_txantenna = 0x2; /* h/w default */ 232 sc->malo_rxantenna = 0xffff; /* h/w default */ 233 234 /* 235 * Allocate tx + rx descriptors and populate the lists. 236 * We immediately push the information to the firmware 237 * as otherwise it gets upset. 238 */ 239 error = malo_dma_setup(sc); 240 if (error != 0) { 241 device_printf(sc->malo_dev, 242 "failed to setup descriptors: %d\n", error); 243 goto bad1; 244 } 245 error = malo_setup_hwdma(sc); /* push to firmware */ 246 if (error != 0) /* NB: malo_setupdma prints msg */ 247 goto bad2; 248 249 sc->malo_tq = taskqueue_create_fast("malo_taskq", M_NOWAIT, 250 taskqueue_thread_enqueue, &sc->malo_tq); 251 taskqueue_start_threads(&sc->malo_tq, 1, PI_NET, 252 "%s taskq", device_get_nameunit(sc->malo_dev)); 253 254 TASK_INIT(&sc->malo_rxtask, 0, malo_rx_proc, sc); 255 TASK_INIT(&sc->malo_txtask, 0, malo_tx_proc, sc); 256 257 ic->ic_softc = sc; 258 ic->ic_name = device_get_nameunit(sc->malo_dev); 259 /* XXX not right but it's not used anywhere important */ 260 ic->ic_phytype = IEEE80211_T_OFDM; 261 ic->ic_opmode = IEEE80211_M_STA; 262 ic->ic_caps = 263 IEEE80211_C_STA /* station mode supported */ 264 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 265 | IEEE80211_C_MONITOR /* monitor mode */ 266 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 267 | IEEE80211_C_SHSLOT /* short slot time supported */ 268 | IEEE80211_C_TXPMGT /* capable of txpow mgt */ 269 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 270 ; 271 IEEE80211_ADDR_COPY(ic->ic_macaddr, sc->malo_hwspecs.macaddr); 272 273 /* 274 * Transmit requires space in the packet for a special format transmit 275 * record and optional padding between this record and the payload. 276 * Ask the net80211 layer to arrange this when encapsulating 277 * packets so we can add it efficiently. 278 */ 279 ic->ic_headroom = sizeof(struct malo_txrec) - 280 sizeof(struct ieee80211_frame); 281 282 /* call MI attach routine. */ 283 ieee80211_ifattach(ic); 284 /* override default methods */ 285 ic->ic_vap_create = malo_vap_create; 286 ic->ic_vap_delete = malo_vap_delete; 287 ic->ic_raw_xmit = malo_raw_xmit; 288 ic->ic_updateslot = malo_updateslot; 289 ic->ic_scan_start = malo_scan_start; 290 ic->ic_scan_end = malo_scan_end; 291 ic->ic_set_channel = malo_set_channel; 292 ic->ic_parent = malo_parent; 293 ic->ic_transmit = malo_transmit; 294 295 sc->malo_invalid = 0; /* ready to go, enable int handling */ 296 297 ieee80211_radiotap_attach(ic, 298 &sc->malo_tx_th.wt_ihdr, sizeof(sc->malo_tx_th), 299 MALO_TX_RADIOTAP_PRESENT, 300 &sc->malo_rx_th.wr_ihdr, sizeof(sc->malo_rx_th), 301 MALO_RX_RADIOTAP_PRESENT); 302 303 /* 304 * Setup dynamic sysctl's. 305 */ 306 malo_sysctlattach(sc); 307 308 if (bootverbose) 309 ieee80211_announce(ic); 310 malo_announce(sc); 311 312 return 0; 313 bad2: 314 malo_dma_cleanup(sc); 315 bad1: 316 malo_hal_detach(mh); 317 bad: 318 sc->malo_invalid = 1; 319 320 return error; 321 } 322 323 static struct ieee80211vap * 324 malo_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 325 enum ieee80211_opmode opmode, int flags, 326 const uint8_t bssid[IEEE80211_ADDR_LEN], 327 const uint8_t mac[IEEE80211_ADDR_LEN]) 328 { 329 struct malo_softc *sc = ic->ic_softc; 330 struct malo_vap *mvp; 331 struct ieee80211vap *vap; 332 333 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 334 device_printf(sc->malo_dev, "multiple vaps not supported\n"); 335 return NULL; 336 } 337 switch (opmode) { 338 case IEEE80211_M_STA: 339 if (opmode == IEEE80211_M_STA) 340 flags |= IEEE80211_CLONE_NOBEACONS; 341 /* fall thru... */ 342 case IEEE80211_M_MONITOR: 343 break; 344 default: 345 device_printf(sc->malo_dev, "%s mode not supported\n", 346 ieee80211_opmode_name[opmode]); 347 return NULL; /* unsupported */ 348 } 349 mvp = malloc(sizeof(struct malo_vap), M_80211_VAP, M_WAITOK | M_ZERO); 350 vap = &mvp->malo_vap; 351 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 352 353 /* override state transition machine */ 354 mvp->malo_newstate = vap->iv_newstate; 355 vap->iv_newstate = malo_newstate; 356 357 /* complete setup */ 358 ieee80211_vap_attach(vap, 359 ieee80211_media_change, ieee80211_media_status, mac); 360 ic->ic_opmode = opmode; 361 return vap; 362 } 363 364 static void 365 malo_vap_delete(struct ieee80211vap *vap) 366 { 367 struct malo_vap *mvp = MALO_VAP(vap); 368 369 ieee80211_vap_detach(vap); 370 free(mvp, M_80211_VAP); 371 } 372 373 int 374 malo_intr(void *arg) 375 { 376 struct malo_softc *sc = arg; 377 struct malo_hal *mh = sc->malo_mh; 378 uint32_t status; 379 380 if (sc->malo_invalid) { 381 /* 382 * The hardware is not ready/present, don't touch anything. 383 * Note this can happen early on if the IRQ is shared. 384 */ 385 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid; ignored\n", __func__); 386 return (FILTER_STRAY); 387 } 388 389 /* 390 * Figure out the reason(s) for the interrupt. 391 */ 392 malo_hal_getisr(mh, &status); /* NB: clears ISR too */ 393 if (status == 0) /* must be a shared irq */ 394 return (FILTER_STRAY); 395 396 DPRINTF(sc, MALO_DEBUG_INTR, "%s: status 0x%x imask 0x%x\n", 397 __func__, status, sc->malo_imask); 398 399 if (status & MALO_A2HRIC_BIT_RX_RDY) 400 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_rxtask); 401 if (status & MALO_A2HRIC_BIT_TX_DONE) 402 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_txtask); 403 if (status & MALO_A2HRIC_BIT_OPC_DONE) 404 malo_hal_cmddone(mh); 405 if (status & MALO_A2HRIC_BIT_MAC_EVENT) 406 ; 407 if (status & MALO_A2HRIC_BIT_RX_PROBLEM) 408 ; 409 if (status & MALO_A2HRIC_BIT_ICV_ERROR) { 410 /* TKIP ICV error */ 411 sc->malo_stats.mst_rx_badtkipicv++; 412 } 413 #ifdef MALO_DEBUG 414 if (((status | sc->malo_imask) ^ sc->malo_imask) != 0) 415 DPRINTF(sc, MALO_DEBUG_INTR, 416 "%s: can't handle interrupt status 0x%x\n", 417 __func__, status); 418 #endif 419 return (FILTER_HANDLED); 420 } 421 422 static void 423 malo_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 424 { 425 bus_addr_t *paddr = (bus_addr_t*) arg; 426 427 KASSERT(error == 0, ("error %u on bus_dma callback", error)); 428 429 *paddr = segs->ds_addr; 430 } 431 432 static int 433 malo_desc_setup(struct malo_softc *sc, const char *name, 434 struct malo_descdma *dd, 435 int nbuf, size_t bufsize, int ndesc, size_t descsize) 436 { 437 int error; 438 uint8_t *ds; 439 440 DPRINTF(sc, MALO_DEBUG_RESET, 441 "%s: %s DMA: %u bufs (%ju) %u desc/buf (%ju)\n", 442 __func__, name, nbuf, (uintmax_t) bufsize, 443 ndesc, (uintmax_t) descsize); 444 445 dd->dd_name = name; 446 dd->dd_desc_len = nbuf * ndesc * descsize; 447 448 /* 449 * Setup DMA descriptor area. 450 */ 451 error = bus_dma_tag_create(bus_get_dma_tag(sc->malo_dev),/* parent */ 452 PAGE_SIZE, 0, /* alignment, bounds */ 453 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 454 BUS_SPACE_MAXADDR, /* highaddr */ 455 NULL, NULL, /* filter, filterarg */ 456 dd->dd_desc_len, /* maxsize */ 457 1, /* nsegments */ 458 dd->dd_desc_len, /* maxsegsize */ 459 BUS_DMA_ALLOCNOW, /* flags */ 460 NULL, /* lockfunc */ 461 NULL, /* lockarg */ 462 &dd->dd_dmat); 463 if (error != 0) { 464 device_printf(sc->malo_dev, "cannot allocate %s DMA tag\n", 465 dd->dd_name); 466 return error; 467 } 468 469 /* allocate descriptors */ 470 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc, 471 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dd->dd_dmamap); 472 if (error != 0) { 473 device_printf(sc->malo_dev, 474 "unable to alloc memory for %u %s descriptors, " 475 "error %u\n", nbuf * ndesc, dd->dd_name, error); 476 goto fail1; 477 } 478 479 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap, 480 dd->dd_desc, dd->dd_desc_len, 481 malo_load_cb, &dd->dd_desc_paddr, BUS_DMA_NOWAIT); 482 if (error != 0) { 483 device_printf(sc->malo_dev, 484 "unable to map %s descriptors, error %u\n", 485 dd->dd_name, error); 486 goto fail2; 487 } 488 489 ds = dd->dd_desc; 490 memset(ds, 0, dd->dd_desc_len); 491 DPRINTF(sc, MALO_DEBUG_RESET, 492 "%s: %s DMA map: %p (%lu) -> 0x%jx (%lu)\n", 493 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len, 494 (uintmax_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len); 495 496 return 0; 497 fail2: 498 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 499 fail1: 500 bus_dma_tag_destroy(dd->dd_dmat); 501 memset(dd, 0, sizeof(*dd)); 502 return error; 503 } 504 505 #define DS2PHYS(_dd, _ds) \ 506 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 507 508 static int 509 malo_rxdma_setup(struct malo_softc *sc) 510 { 511 int error, bsize, i; 512 struct malo_rxbuf *bf; 513 struct malo_rxdesc *ds; 514 515 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma, 516 malo_rxbuf, sizeof(struct malo_rxbuf), 517 1, sizeof(struct malo_rxdesc)); 518 if (error != 0) 519 return error; 520 521 /* 522 * Allocate rx buffers and set them up. 523 */ 524 bsize = malo_rxbuf * sizeof(struct malo_rxbuf); 525 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 526 if (bf == NULL) { 527 device_printf(sc->malo_dev, 528 "malloc of %u rx buffers failed\n", bsize); 529 return error; 530 } 531 sc->malo_rxdma.dd_bufptr = bf; 532 533 STAILQ_INIT(&sc->malo_rxbuf); 534 ds = sc->malo_rxdma.dd_desc; 535 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) { 536 bf->bf_desc = ds; 537 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds); 538 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 539 &bf->bf_dmamap); 540 if (error != 0) { 541 device_printf(sc->malo_dev, 542 "%s: unable to dmamap for rx buffer, error %d\n", 543 __func__, error); 544 return error; 545 } 546 /* NB: tail is intentional to preserve descriptor order */ 547 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list); 548 } 549 return 0; 550 } 551 552 static int 553 malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq) 554 { 555 int error, bsize, i; 556 struct malo_txbuf *bf; 557 struct malo_txdesc *ds; 558 559 error = malo_desc_setup(sc, "tx", &txq->dma, 560 malo_txbuf, sizeof(struct malo_txbuf), 561 MALO_TXDESC, sizeof(struct malo_txdesc)); 562 if (error != 0) 563 return error; 564 565 /* allocate and setup tx buffers */ 566 bsize = malo_txbuf * sizeof(struct malo_txbuf); 567 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 568 if (bf == NULL) { 569 device_printf(sc->malo_dev, "malloc of %u tx buffers failed\n", 570 malo_txbuf); 571 return ENOMEM; 572 } 573 txq->dma.dd_bufptr = bf; 574 575 STAILQ_INIT(&txq->free); 576 txq->nfree = 0; 577 ds = txq->dma.dd_desc; 578 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) { 579 bf->bf_desc = ds; 580 bf->bf_daddr = DS2PHYS(&txq->dma, ds); 581 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 582 &bf->bf_dmamap); 583 if (error != 0) { 584 device_printf(sc->malo_dev, 585 "unable to create dmamap for tx " 586 "buffer %u, error %u\n", i, error); 587 return error; 588 } 589 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 590 txq->nfree++; 591 } 592 593 return 0; 594 } 595 596 static void 597 malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd) 598 { 599 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap); 600 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 601 bus_dma_tag_destroy(dd->dd_dmat); 602 603 memset(dd, 0, sizeof(*dd)); 604 } 605 606 static void 607 malo_rxdma_cleanup(struct malo_softc *sc) 608 { 609 struct malo_rxbuf *bf; 610 611 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 612 if (bf->bf_m != NULL) { 613 m_freem(bf->bf_m); 614 bf->bf_m = NULL; 615 } 616 if (bf->bf_dmamap != NULL) { 617 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 618 bf->bf_dmamap = NULL; 619 } 620 } 621 STAILQ_INIT(&sc->malo_rxbuf); 622 if (sc->malo_rxdma.dd_bufptr != NULL) { 623 free(sc->malo_rxdma.dd_bufptr, M_MALODEV); 624 sc->malo_rxdma.dd_bufptr = NULL; 625 } 626 if (sc->malo_rxdma.dd_desc_len != 0) 627 malo_desc_cleanup(sc, &sc->malo_rxdma); 628 } 629 630 static void 631 malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq) 632 { 633 struct malo_txbuf *bf; 634 struct ieee80211_node *ni; 635 636 STAILQ_FOREACH(bf, &txq->free, bf_list) { 637 if (bf->bf_m != NULL) { 638 m_freem(bf->bf_m); 639 bf->bf_m = NULL; 640 } 641 ni = bf->bf_node; 642 bf->bf_node = NULL; 643 if (ni != NULL) { 644 /* 645 * Reclaim node reference. 646 */ 647 ieee80211_free_node(ni); 648 } 649 if (bf->bf_dmamap != NULL) { 650 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 651 bf->bf_dmamap = NULL; 652 } 653 } 654 STAILQ_INIT(&txq->free); 655 txq->nfree = 0; 656 if (txq->dma.dd_bufptr != NULL) { 657 free(txq->dma.dd_bufptr, M_MALODEV); 658 txq->dma.dd_bufptr = NULL; 659 } 660 if (txq->dma.dd_desc_len != 0) 661 malo_desc_cleanup(sc, &txq->dma); 662 } 663 664 static void 665 malo_dma_cleanup(struct malo_softc *sc) 666 { 667 int i; 668 669 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 670 malo_txdma_cleanup(sc, &sc->malo_txq[i]); 671 672 malo_rxdma_cleanup(sc); 673 } 674 675 static int 676 malo_dma_setup(struct malo_softc *sc) 677 { 678 int error, i; 679 680 /* rxdma initializing. */ 681 error = malo_rxdma_setup(sc); 682 if (error != 0) 683 return error; 684 685 /* NB: we just have 1 tx queue now. */ 686 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 687 error = malo_txdma_setup(sc, &sc->malo_txq[i]); 688 if (error != 0) { 689 malo_dma_cleanup(sc); 690 691 return error; 692 } 693 694 malo_txq_init(sc, &sc->malo_txq[i], i); 695 } 696 697 return 0; 698 } 699 700 static void 701 malo_hal_set_rxtxdma(struct malo_softc *sc) 702 { 703 int i; 704 705 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, 706 sc->malo_hwdma.rxdesc_read); 707 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write, 708 sc->malo_hwdma.rxdesc_read); 709 710 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 711 malo_bar0_write4(sc, 712 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]); 713 } 714 } 715 716 /* 717 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are 718 * for compatibility with older firmware. For current firmware we send 719 * this information with a cmd block via malo_hal_sethwdma. 720 */ 721 static int 722 malo_setup_hwdma(struct malo_softc *sc) 723 { 724 int i; 725 struct malo_txq *txq; 726 727 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr; 728 729 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 730 txq = &sc->malo_txq[i]; 731 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr; 732 } 733 sc->malo_hwdma.maxnum_txwcb = malo_txbuf; 734 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES; 735 736 malo_hal_set_rxtxdma(sc); 737 738 return 0; 739 } 740 741 static void 742 malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum) 743 { 744 struct malo_txbuf *bf, *bn; 745 struct malo_txdesc *ds; 746 747 MALO_TXQ_LOCK_INIT(sc, txq); 748 txq->qnum = qnum; 749 txq->txpri = 0; /* XXX */ 750 751 STAILQ_FOREACH(bf, &txq->free, bf_list) { 752 bf->bf_txq = txq; 753 754 ds = bf->bf_desc; 755 bn = STAILQ_NEXT(bf, bf_list); 756 if (bn == NULL) 757 bn = STAILQ_FIRST(&txq->free); 758 ds->physnext = htole32(bn->bf_daddr); 759 } 760 STAILQ_INIT(&txq->active); 761 } 762 763 /* 764 * Reclaim resources for a setup queue. 765 */ 766 static void 767 malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq) 768 { 769 /* XXX hal work? */ 770 MALO_TXQ_LOCK_DESTROY(txq); 771 } 772 773 /* 774 * Allocate a tx buffer for sending a frame. 775 */ 776 static struct malo_txbuf * 777 malo_getbuf(struct malo_softc *sc, struct malo_txq *txq) 778 { 779 struct malo_txbuf *bf; 780 781 MALO_TXQ_LOCK(txq); 782 bf = STAILQ_FIRST(&txq->free); 783 if (bf != NULL) { 784 STAILQ_REMOVE_HEAD(&txq->free, bf_list); 785 txq->nfree--; 786 } 787 MALO_TXQ_UNLOCK(txq); 788 if (bf == NULL) { 789 DPRINTF(sc, MALO_DEBUG_XMIT, 790 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum); 791 sc->malo_stats.mst_tx_qstop++; 792 } 793 return bf; 794 } 795 796 static int 797 malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0) 798 { 799 struct mbuf *m; 800 int error; 801 802 /* 803 * Load the DMA map so any coalescing is done. This also calculates 804 * the number of descriptors we need. 805 */ 806 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 807 bf->bf_segs, &bf->bf_nseg, 808 BUS_DMA_NOWAIT); 809 if (error == EFBIG) { 810 /* XXX packet requires too many descriptors */ 811 bf->bf_nseg = MALO_TXDESC + 1; 812 } else if (error != 0) { 813 sc->malo_stats.mst_tx_busdma++; 814 m_freem(m0); 815 return error; 816 } 817 /* 818 * Discard null packets and check for packets that require too many 819 * TX descriptors. We try to convert the latter to a cluster. 820 */ 821 if (error == EFBIG) { /* too many desc's, linearize */ 822 sc->malo_stats.mst_tx_linear++; 823 m = m_defrag(m0, M_NOWAIT); 824 if (m == NULL) { 825 m_freem(m0); 826 sc->malo_stats.mst_tx_nombuf++; 827 return ENOMEM; 828 } 829 m0 = m; 830 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 831 bf->bf_segs, &bf->bf_nseg, 832 BUS_DMA_NOWAIT); 833 if (error != 0) { 834 sc->malo_stats.mst_tx_busdma++; 835 m_freem(m0); 836 return error; 837 } 838 KASSERT(bf->bf_nseg <= MALO_TXDESC, 839 ("too many segments after defrag; nseg %u", bf->bf_nseg)); 840 } else if (bf->bf_nseg == 0) { /* null packet, discard */ 841 sc->malo_stats.mst_tx_nodata++; 842 m_freem(m0); 843 return EIO; 844 } 845 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n", 846 __func__, m0, m0->m_pkthdr.len); 847 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 848 bf->bf_m = m0; 849 850 return 0; 851 } 852 853 #ifdef MALO_DEBUG 854 static void 855 malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix) 856 { 857 const struct malo_rxdesc *ds = bf->bf_desc; 858 uint32_t status = le32toh(ds->status); 859 860 printf("R[%2u] (DS.V:%p DS.P:0x%jx) NEXT:%08x DATA:%08x RC:%02x%s\n" 861 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x" 862 " RATE:%02x QOS:%04x\n", ix, ds, (uintmax_t)bf->bf_daddr, 863 le32toh(ds->physnext), le32toh(ds->physbuffdata), 864 ds->rxcontrol, 865 ds->rxcontrol != MALO_RXD_CTRL_DRIVER_OWN ? 866 "" : (status & MALO_RXD_STATUS_OK) ? " *" : " !", 867 ds->status, le16toh(ds->pktlen), ds->snr, ds->nf, ds->channel, 868 ds->rate, le16toh(ds->qosctrl)); 869 } 870 871 static void 872 malo_printtxbuf(const struct malo_txbuf *bf, u_int qnum, u_int ix) 873 { 874 const struct malo_txdesc *ds = bf->bf_desc; 875 uint32_t status = le32toh(ds->status); 876 877 printf("Q%u[%3u]", qnum, ix); 878 printf(" (DS.V:%p DS.P:0x%jx)\n", ds, (uintmax_t)bf->bf_daddr); 879 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n", 880 le32toh(ds->physnext), 881 le32toh(ds->pktptr), le16toh(ds->pktlen), status, 882 status & MALO_TXD_STATUS_USED ? 883 "" : (status & 3) != 0 ? " *" : " !"); 884 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n", 885 ds->datarate, ds->txpriority, le16toh(ds->qosctrl), 886 le32toh(ds->sap_pktinfo), le16toh(ds->format)); 887 #if 0 888 { 889 const uint8_t *cp = (const uint8_t *) ds; 890 int i; 891 for (i = 0; i < sizeof(struct malo_txdesc); i++) { 892 printf("%02x ", cp[i]); 893 if (((i+1) % 16) == 0) 894 printf("\n"); 895 } 896 printf("\n"); 897 } 898 #endif 899 } 900 #endif /* MALO_DEBUG */ 901 902 static __inline void 903 malo_updatetxrate(struct ieee80211_node *ni, int rix) 904 { 905 static const int ieeerates[] = 906 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 }; 907 if (rix < nitems(ieeerates)) 908 ni->ni_txrate = ieeerates[rix]; 909 } 910 911 static int 912 malo_fix2rate(int fix_rate) 913 { 914 static const int rates[] = 915 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 }; 916 return (fix_rate < nitems(rates) ? rates[fix_rate] : 0); 917 } 918 919 /* idiomatic shorthands: MS = mask+shift, SM = shift+mask */ 920 #define MS(v,x) (((v) & x) >> x##_S) 921 #define SM(v,x) (((v) << x##_S) & x) 922 923 /* 924 * Process completed xmit descriptors from the specified queue. 925 */ 926 static int 927 malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq) 928 { 929 struct malo_txbuf *bf; 930 struct malo_txdesc *ds; 931 struct ieee80211_node *ni; 932 int nreaped; 933 uint32_t status; 934 935 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n", 936 __func__, txq->qnum); 937 for (nreaped = 0;; nreaped++) { 938 MALO_TXQ_LOCK(txq); 939 bf = STAILQ_FIRST(&txq->active); 940 if (bf == NULL) { 941 MALO_TXQ_UNLOCK(txq); 942 break; 943 } 944 ds = bf->bf_desc; 945 MALO_TXDESC_SYNC(txq, ds, 946 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 947 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) { 948 MALO_TXQ_UNLOCK(txq); 949 break; 950 } 951 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 952 MALO_TXQ_UNLOCK(txq); 953 954 #ifdef MALO_DEBUG 955 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC) 956 malo_printtxbuf(bf, txq->qnum, nreaped); 957 #endif 958 ni = bf->bf_node; 959 if (ni != NULL) { 960 status = le32toh(ds->status); 961 if (status & MALO_TXD_STATUS_OK) { 962 uint16_t format = le16toh(ds->format); 963 uint8_t txant = MS(format, MALO_TXD_ANTENNA); 964 965 sc->malo_stats.mst_ant_tx[txant]++; 966 if (status & MALO_TXD_STATUS_OK_RETRY) 967 sc->malo_stats.mst_tx_retries++; 968 if (status & MALO_TXD_STATUS_OK_MORE_RETRY) 969 sc->malo_stats.mst_tx_mretries++; 970 malo_updatetxrate(ni, ds->datarate); 971 sc->malo_stats.mst_tx_rate = ds->datarate; 972 } else { 973 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR) 974 sc->malo_stats.mst_tx_linkerror++; 975 if (status & MALO_TXD_STATUS_FAILED_XRETRY) 976 sc->malo_stats.mst_tx_xretries++; 977 if (status & MALO_TXD_STATUS_FAILED_AGING) 978 sc->malo_stats.mst_tx_aging++; 979 } 980 /* XXX strip fw len in case header inspected */ 981 m_adj(bf->bf_m, sizeof(uint16_t)); 982 ieee80211_tx_complete(ni, bf->bf_m, 983 (status & MALO_TXD_STATUS_OK) == 0); 984 } else 985 m_freem(bf->bf_m); 986 987 ds->status = htole32(MALO_TXD_STATUS_IDLE); 988 ds->pktlen = htole32(0); 989 990 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 991 BUS_DMASYNC_POSTWRITE); 992 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 993 bf->bf_m = NULL; 994 bf->bf_node = NULL; 995 996 MALO_TXQ_LOCK(txq); 997 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 998 txq->nfree++; 999 MALO_TXQ_UNLOCK(txq); 1000 } 1001 return nreaped; 1002 } 1003 1004 /* 1005 * Deferred processing of transmit interrupt. 1006 */ 1007 static void 1008 malo_tx_proc(void *arg, int npending) 1009 { 1010 struct malo_softc *sc = arg; 1011 int i, nreaped; 1012 1013 /* 1014 * Process each active queue. 1015 */ 1016 nreaped = 0; 1017 MALO_LOCK(sc); 1018 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 1019 if (!STAILQ_EMPTY(&sc->malo_txq[i].active)) 1020 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]); 1021 } 1022 1023 if (nreaped != 0) { 1024 sc->malo_timer = 0; 1025 malo_start(sc); 1026 } 1027 MALO_UNLOCK(sc); 1028 } 1029 1030 static int 1031 malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni, 1032 struct malo_txbuf *bf, struct mbuf *m0) 1033 { 1034 #define IS_DATA_FRAME(wh) \ 1035 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA) 1036 int error, ismcast, iswep; 1037 int copyhdrlen, hdrlen, pktlen; 1038 struct ieee80211_frame *wh; 1039 struct ieee80211com *ic = &sc->malo_ic; 1040 struct ieee80211vap *vap = ni->ni_vap; 1041 struct malo_txdesc *ds; 1042 struct malo_txrec *tr; 1043 struct malo_txq *txq; 1044 uint16_t qos; 1045 1046 wh = mtod(m0, struct ieee80211_frame *); 1047 iswep = wh->i_fc[1] & IEEE80211_FC1_PROTECTED; 1048 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1049 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh); 1050 pktlen = m0->m_pkthdr.len; 1051 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1052 if (IEEE80211_IS_DSTODS(wh)) { 1053 qos = *(uint16_t *) 1054 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos); 1055 copyhdrlen -= sizeof(qos); 1056 } else 1057 qos = *(uint16_t *) 1058 (((struct ieee80211_qosframe *) wh)->i_qos); 1059 } else 1060 qos = 0; 1061 1062 if (iswep) { 1063 struct ieee80211_key *k; 1064 1065 /* 1066 * Construct the 802.11 header+trailer for an encrypted 1067 * frame. The only reason this can fail is because of an 1068 * unknown or unsupported cipher/key type. 1069 * 1070 * NB: we do this even though the firmware will ignore 1071 * what we've done for WEP and TKIP as we need the 1072 * ExtIV filled in for CCMP and this also adjusts 1073 * the headers which simplifies our work below. 1074 */ 1075 k = ieee80211_crypto_encap(ni, m0); 1076 if (k == NULL) { 1077 /* 1078 * This can happen when the key is yanked after the 1079 * frame was queued. Just discard the frame; the 1080 * 802.11 layer counts failures and provides 1081 * debugging/diagnostics. 1082 */ 1083 m_freem(m0); 1084 return EIO; 1085 } 1086 1087 /* 1088 * Adjust the packet length for the crypto additions 1089 * done during encap and any other bits that the f/w 1090 * will add later on. 1091 */ 1092 pktlen = m0->m_pkthdr.len; 1093 1094 /* packet header may have moved, reset our local pointer */ 1095 wh = mtod(m0, struct ieee80211_frame *); 1096 } 1097 1098 if (ieee80211_radiotap_active_vap(vap)) { 1099 sc->malo_tx_th.wt_flags = 0; /* XXX */ 1100 if (iswep) 1101 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1102 sc->malo_tx_th.wt_txpower = ni->ni_txpower; 1103 sc->malo_tx_th.wt_antenna = sc->malo_txantenna; 1104 1105 ieee80211_radiotap_tx(vap, m0); 1106 } 1107 1108 /* 1109 * Copy up/down the 802.11 header; the firmware requires 1110 * we present a 2-byte payload length followed by a 1111 * 4-address header (w/o QoS), followed (optionally) by 1112 * any WEP/ExtIV header (but only filled in for CCMP). 1113 * We are assured the mbuf has sufficient headroom to 1114 * prepend in-place by the setup of ic_headroom in 1115 * malo_attach. 1116 */ 1117 if (hdrlen < sizeof(struct malo_txrec)) { 1118 const int space = sizeof(struct malo_txrec) - hdrlen; 1119 if (M_LEADINGSPACE(m0) < space) { 1120 /* NB: should never happen */ 1121 device_printf(sc->malo_dev, 1122 "not enough headroom, need %d found %zd, " 1123 "m_flags 0x%x m_len %d\n", 1124 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len); 1125 ieee80211_dump_pkt(ic, 1126 mtod(m0, const uint8_t *), m0->m_len, 0, -1); 1127 m_freem(m0); 1128 /* XXX stat */ 1129 return EIO; 1130 } 1131 M_PREPEND(m0, space, M_NOWAIT); 1132 } 1133 tr = mtod(m0, struct malo_txrec *); 1134 if (wh != (struct ieee80211_frame *) &tr->wh) 1135 ovbcopy(wh, &tr->wh, hdrlen); 1136 /* 1137 * Note: the "firmware length" is actually the length of the fully 1138 * formed "802.11 payload". That is, it's everything except for 1139 * the 802.11 header. In particular this includes all crypto 1140 * material including the MIC! 1141 */ 1142 tr->fwlen = htole16(pktlen - hdrlen); 1143 1144 /* 1145 * Load the DMA map so any coalescing is done. This 1146 * also calculates the number of descriptors we need. 1147 */ 1148 error = malo_tx_dmasetup(sc, bf, m0); 1149 if (error != 0) 1150 return error; 1151 bf->bf_node = ni; /* NB: held reference */ 1152 m0 = bf->bf_m; /* NB: may have changed */ 1153 tr = mtod(m0, struct malo_txrec *); 1154 wh = (struct ieee80211_frame *)&tr->wh; 1155 1156 /* 1157 * Formulate tx descriptor. 1158 */ 1159 ds = bf->bf_desc; 1160 txq = bf->bf_txq; 1161 1162 ds->qosctrl = qos; /* NB: already little-endian */ 1163 ds->pktptr = htole32(bf->bf_segs[0].ds_addr); 1164 ds->pktlen = htole16(bf->bf_segs[0].ds_len); 1165 /* NB: pPhysNext setup once, don't touch */ 1166 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0; 1167 ds->sap_pktinfo = 0; 1168 ds->format = 0; 1169 1170 /* 1171 * Select transmit rate. 1172 */ 1173 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 1174 case IEEE80211_FC0_TYPE_MGT: 1175 sc->malo_stats.mst_tx_mgmt++; 1176 /* fall thru... */ 1177 case IEEE80211_FC0_TYPE_CTL: 1178 ds->txpriority = 1; 1179 break; 1180 case IEEE80211_FC0_TYPE_DATA: 1181 ds->txpriority = txq->qnum; 1182 break; 1183 default: 1184 device_printf(sc->malo_dev, "bogus frame type 0x%x (%s)\n", 1185 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__); 1186 /* XXX statistic */ 1187 m_freem(m0); 1188 return EIO; 1189 } 1190 1191 #ifdef MALO_DEBUG 1192 if (IFF_DUMPPKTS_XMIT(sc)) 1193 ieee80211_dump_pkt(ic, 1194 mtod(m0, const uint8_t *)+sizeof(uint16_t), 1195 m0->m_len - sizeof(uint16_t), ds->datarate, -1); 1196 #endif 1197 1198 MALO_TXQ_LOCK(txq); 1199 if (!IS_DATA_FRAME(wh)) 1200 ds->status |= htole32(1); 1201 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED); 1202 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list); 1203 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1204 1205 sc->malo_timer = 5; 1206 MALO_TXQ_UNLOCK(txq); 1207 return 0; 1208 } 1209 1210 static int 1211 malo_transmit(struct ieee80211com *ic, struct mbuf *m) 1212 { 1213 struct malo_softc *sc = ic->ic_softc; 1214 int error; 1215 1216 MALO_LOCK(sc); 1217 if (!sc->malo_running) { 1218 MALO_UNLOCK(sc); 1219 return (ENXIO); 1220 } 1221 error = mbufq_enqueue(&sc->malo_snd, m); 1222 if (error) { 1223 MALO_UNLOCK(sc); 1224 return (error); 1225 } 1226 malo_start(sc); 1227 MALO_UNLOCK(sc); 1228 return (0); 1229 } 1230 1231 static void 1232 malo_start(struct malo_softc *sc) 1233 { 1234 struct ieee80211_node *ni; 1235 struct malo_txq *txq = &sc->malo_txq[0]; 1236 struct malo_txbuf *bf = NULL; 1237 struct mbuf *m; 1238 int nqueued = 0; 1239 1240 MALO_LOCK_ASSERT(sc); 1241 1242 if (!sc->malo_running || sc->malo_invalid) 1243 return; 1244 1245 while ((m = mbufq_dequeue(&sc->malo_snd)) != NULL) { 1246 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1247 bf = malo_getbuf(sc, txq); 1248 if (bf == NULL) { 1249 mbufq_prepend(&sc->malo_snd, m); 1250 sc->malo_stats.mst_tx_qstop++; 1251 break; 1252 } 1253 /* 1254 * Pass the frame to the h/w for transmission. 1255 */ 1256 if (malo_tx_start(sc, ni, bf, m)) { 1257 if_inc_counter(ni->ni_vap->iv_ifp, 1258 IFCOUNTER_OERRORS, 1); 1259 if (bf != NULL) { 1260 bf->bf_m = NULL; 1261 bf->bf_node = NULL; 1262 MALO_TXQ_LOCK(txq); 1263 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1264 MALO_TXQ_UNLOCK(txq); 1265 } 1266 ieee80211_free_node(ni); 1267 continue; 1268 } 1269 nqueued++; 1270 1271 if (nqueued >= malo_txcoalesce) { 1272 /* 1273 * Poke the firmware to process queued frames; 1274 * see below about (lack of) locking. 1275 */ 1276 nqueued = 0; 1277 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1278 } 1279 } 1280 1281 if (nqueued) { 1282 /* 1283 * NB: We don't need to lock against tx done because 1284 * this just prods the firmware to check the transmit 1285 * descriptors. The firmware will also start fetching 1286 * descriptors by itself if it notices new ones are 1287 * present when it goes to deliver a tx done interrupt 1288 * to the host. So if we race with tx done processing 1289 * it's ok. Delivering the kick here rather than in 1290 * malo_tx_start is an optimization to avoid poking the 1291 * firmware for each packet. 1292 * 1293 * NB: the queue id isn't used so 0 is ok. 1294 */ 1295 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1296 } 1297 } 1298 1299 static void 1300 malo_watchdog(void *arg) 1301 { 1302 struct malo_softc *sc = arg; 1303 1304 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1305 if (sc->malo_timer == 0 || --sc->malo_timer > 0) 1306 return; 1307 1308 if (sc->malo_running && !sc->malo_invalid) { 1309 device_printf(sc->malo_dev, "watchdog timeout\n"); 1310 1311 /* XXX no way to reset h/w. now */ 1312 1313 counter_u64_add(sc->malo_ic.ic_oerrors, 1); 1314 sc->malo_stats.mst_watchdog++; 1315 } 1316 } 1317 1318 static int 1319 malo_hal_reset(struct malo_softc *sc) 1320 { 1321 static int first = 0; 1322 struct ieee80211com *ic = &sc->malo_ic; 1323 struct malo_hal *mh = sc->malo_mh; 1324 1325 if (first == 0) { 1326 /* 1327 * NB: when the device firstly is initialized, sometimes 1328 * firmware could override rx/tx dma registers so we re-set 1329 * these values once. 1330 */ 1331 malo_hal_set_rxtxdma(sc); 1332 first = 1; 1333 } 1334 1335 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna); 1336 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna); 1337 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE); 1338 malo_chan_set(sc, ic->ic_curchan); 1339 1340 /* XXX needs other stuffs? */ 1341 1342 return 1; 1343 } 1344 1345 static __inline struct mbuf * 1346 malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf) 1347 { 1348 struct mbuf *m; 1349 bus_addr_t paddr; 1350 int error; 1351 1352 /* XXX don't need mbuf, just dma buffer */ 1353 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1354 if (m == NULL) { 1355 sc->malo_stats.mst_rx_nombuf++; /* XXX */ 1356 return NULL; 1357 } 1358 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap, 1359 mtod(m, caddr_t), MJUMPAGESIZE, 1360 malo_load_cb, &paddr, BUS_DMA_NOWAIT); 1361 if (error != 0) { 1362 device_printf(sc->malo_dev, 1363 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1364 m_freem(m); 1365 return NULL; 1366 } 1367 bf->bf_data = paddr; 1368 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 1369 1370 return m; 1371 } 1372 1373 static int 1374 malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf) 1375 { 1376 struct malo_rxdesc *ds; 1377 1378 ds = bf->bf_desc; 1379 if (bf->bf_m == NULL) { 1380 bf->bf_m = malo_getrxmbuf(sc, bf); 1381 if (bf->bf_m == NULL) { 1382 /* mark descriptor to be skipped */ 1383 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN; 1384 /* NB: don't need PREREAD */ 1385 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE); 1386 return ENOMEM; 1387 } 1388 } 1389 1390 /* 1391 * Setup descriptor. 1392 */ 1393 ds->qosctrl = 0; 1394 ds->snr = 0; 1395 ds->status = MALO_RXD_STATUS_IDLE; 1396 ds->channel = 0; 1397 ds->pktlen = htole16(MALO_RXSIZE); 1398 ds->nf = 0; 1399 ds->physbuffdata = htole32(bf->bf_data); 1400 /* NB: don't touch pPhysNext, set once */ 1401 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN; 1402 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1403 1404 return 0; 1405 } 1406 1407 /* 1408 * Setup the rx data structures. This should only be done once or we may get 1409 * out of sync with the firmware. 1410 */ 1411 static int 1412 malo_startrecv(struct malo_softc *sc) 1413 { 1414 struct malo_rxbuf *bf, *prev; 1415 struct malo_rxdesc *ds; 1416 1417 if (sc->malo_recvsetup == 1) { 1418 malo_mode_init(sc); /* set filters, etc. */ 1419 return 0; 1420 } 1421 1422 prev = NULL; 1423 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 1424 int error = malo_rxbuf_init(sc, bf); 1425 if (error != 0) { 1426 DPRINTF(sc, MALO_DEBUG_RECV, 1427 "%s: malo_rxbuf_init failed %d\n", 1428 __func__, error); 1429 return error; 1430 } 1431 if (prev != NULL) { 1432 ds = prev->bf_desc; 1433 ds->physnext = htole32(bf->bf_daddr); 1434 } 1435 prev = bf; 1436 } 1437 if (prev != NULL) { 1438 ds = prev->bf_desc; 1439 ds->physnext = 1440 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr); 1441 } 1442 1443 sc->malo_recvsetup = 1; 1444 1445 malo_mode_init(sc); /* set filters, etc. */ 1446 1447 return 0; 1448 } 1449 1450 static void 1451 malo_init_locked(struct malo_softc *sc) 1452 { 1453 struct malo_hal *mh = sc->malo_mh; 1454 int error; 1455 1456 MALO_LOCK_ASSERT(sc); 1457 1458 /* 1459 * Stop anything previously setup. This is safe whether this is 1460 * the first time through or not. 1461 */ 1462 malo_stop(sc); 1463 1464 /* 1465 * Push state to the firmware. 1466 */ 1467 if (!malo_hal_reset(sc)) { 1468 device_printf(sc->malo_dev, 1469 "%s: unable to reset hardware\n", __func__); 1470 return; 1471 } 1472 1473 /* 1474 * Setup recv (once); transmit is already good to go. 1475 */ 1476 error = malo_startrecv(sc); 1477 if (error != 0) { 1478 device_printf(sc->malo_dev, 1479 "%s: unable to start recv logic, error %d\n", 1480 __func__, error); 1481 return; 1482 } 1483 1484 /* 1485 * Enable interrupts. 1486 */ 1487 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY 1488 | MALO_A2HRIC_BIT_TX_DONE 1489 | MALO_A2HRIC_BIT_OPC_DONE 1490 | MALO_A2HRIC_BIT_MAC_EVENT 1491 | MALO_A2HRIC_BIT_RX_PROBLEM 1492 | MALO_A2HRIC_BIT_ICV_ERROR 1493 | MALO_A2HRIC_BIT_RADAR_DETECT 1494 | MALO_A2HRIC_BIT_CHAN_SWITCH; 1495 1496 sc->malo_running = 1; 1497 malo_hal_intrset(mh, sc->malo_imask); 1498 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1499 } 1500 1501 static void 1502 malo_init(void *arg) 1503 { 1504 struct malo_softc *sc = (struct malo_softc *) arg; 1505 struct ieee80211com *ic = &sc->malo_ic; 1506 1507 MALO_LOCK(sc); 1508 malo_init_locked(sc); 1509 MALO_UNLOCK(sc); 1510 1511 if (sc->malo_running) 1512 ieee80211_start_all(ic); /* start all vap's */ 1513 } 1514 1515 /* 1516 * Set the multicast filter contents into the hardware. 1517 */ 1518 static void 1519 malo_setmcastfilter(struct malo_softc *sc) 1520 { 1521 struct ieee80211com *ic = &sc->malo_ic; 1522 struct ieee80211vap *vap; 1523 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX]; 1524 uint8_t *mp; 1525 int nmc; 1526 1527 mp = macs; 1528 nmc = 0; 1529 1530 if (ic->ic_opmode == IEEE80211_M_MONITOR || ic->ic_allmulti > 0 || 1531 ic->ic_promisc > 0) 1532 goto all; 1533 1534 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1535 struct ifnet *ifp; 1536 struct ifmultiaddr *ifma; 1537 1538 ifp = vap->iv_ifp; 1539 if_maddr_rlock(ifp); 1540 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1541 if (ifma->ifma_addr->sa_family != AF_LINK) 1542 continue; 1543 1544 if (nmc == MALO_HAL_MCAST_MAX) { 1545 ifp->if_flags |= IFF_ALLMULTI; 1546 if_maddr_runlock(ifp); 1547 goto all; 1548 } 1549 IEEE80211_ADDR_COPY(mp, 1550 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1551 1552 mp += IEEE80211_ADDR_LEN, nmc++; 1553 } 1554 if_maddr_runlock(ifp); 1555 } 1556 1557 malo_hal_setmcast(sc->malo_mh, nmc, macs); 1558 1559 all: 1560 /* 1561 * XXX we don't know how to set the f/w for supporting 1562 * IFF_ALLMULTI | IFF_PROMISC cases 1563 */ 1564 return; 1565 } 1566 1567 static int 1568 malo_mode_init(struct malo_softc *sc) 1569 { 1570 struct ieee80211com *ic = &sc->malo_ic; 1571 struct malo_hal *mh = sc->malo_mh; 1572 1573 /* 1574 * NB: Ignore promisc in hostap mode; it's set by the 1575 * bridge. This is wrong but we have no way to 1576 * identify internal requests (from the bridge) 1577 * versus external requests such as for tcpdump. 1578 */ 1579 malo_hal_setpromisc(mh, ic->ic_promisc > 0 && 1580 ic->ic_opmode != IEEE80211_M_HOSTAP); 1581 malo_setmcastfilter(sc); 1582 1583 return ENXIO; 1584 } 1585 1586 static void 1587 malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq) 1588 { 1589 struct ieee80211_node *ni; 1590 struct malo_txbuf *bf; 1591 u_int ix; 1592 1593 /* 1594 * NB: this assumes output has been stopped and 1595 * we do not need to block malo_tx_tasklet 1596 */ 1597 for (ix = 0;; ix++) { 1598 MALO_TXQ_LOCK(txq); 1599 bf = STAILQ_FIRST(&txq->active); 1600 if (bf == NULL) { 1601 MALO_TXQ_UNLOCK(txq); 1602 break; 1603 } 1604 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 1605 MALO_TXQ_UNLOCK(txq); 1606 #ifdef MALO_DEBUG 1607 if (sc->malo_debug & MALO_DEBUG_RESET) { 1608 struct ieee80211com *ic = &sc->malo_ic; 1609 const struct malo_txrec *tr = 1610 mtod(bf->bf_m, const struct malo_txrec *); 1611 malo_printtxbuf(bf, txq->qnum, ix); 1612 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh, 1613 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1); 1614 } 1615 #endif /* MALO_DEBUG */ 1616 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1617 ni = bf->bf_node; 1618 bf->bf_node = NULL; 1619 if (ni != NULL) { 1620 /* 1621 * Reclaim node reference. 1622 */ 1623 ieee80211_free_node(ni); 1624 } 1625 m_freem(bf->bf_m); 1626 bf->bf_m = NULL; 1627 1628 MALO_TXQ_LOCK(txq); 1629 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1630 txq->nfree++; 1631 MALO_TXQ_UNLOCK(txq); 1632 } 1633 } 1634 1635 static void 1636 malo_stop(struct malo_softc *sc) 1637 { 1638 struct malo_hal *mh = sc->malo_mh; 1639 int i; 1640 1641 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u running %u\n", 1642 __func__, sc->malo_invalid, sc->malo_running); 1643 1644 MALO_LOCK_ASSERT(sc); 1645 1646 if (!sc->malo_running) 1647 return; 1648 1649 /* 1650 * Shutdown the hardware and driver: 1651 * disable interrupts 1652 * turn off the radio 1653 * drain and release tx queues 1654 * 1655 * Note that some of this work is not possible if the hardware 1656 * is gone (invalid). 1657 */ 1658 sc->malo_running = 0; 1659 callout_stop(&sc->malo_watchdog_timer); 1660 sc->malo_timer = 0; 1661 /* disable interrupt. */ 1662 malo_hal_intrset(mh, 0); 1663 /* turn off the radio. */ 1664 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE); 1665 1666 /* drain and release tx queues. */ 1667 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 1668 malo_tx_draintxq(sc, &sc->malo_txq[i]); 1669 } 1670 1671 static void 1672 malo_parent(struct ieee80211com *ic) 1673 { 1674 struct malo_softc *sc = ic->ic_softc; 1675 int startall = 0; 1676 1677 MALO_LOCK(sc); 1678 if (ic->ic_nrunning > 0) { 1679 /* 1680 * Beware of being called during attach/detach 1681 * to reset promiscuous mode. In that case we 1682 * will still be marked UP but not RUNNING. 1683 * However trying to re-init the interface 1684 * is the wrong thing to do as we've already 1685 * torn down much of our state. There's 1686 * probably a better way to deal with this. 1687 */ 1688 if (!sc->malo_running && !sc->malo_invalid) { 1689 malo_init(sc); 1690 startall = 1; 1691 } 1692 /* 1693 * To avoid rescanning another access point, 1694 * do not call malo_init() here. Instead, 1695 * only reflect promisc mode settings. 1696 */ 1697 malo_mode_init(sc); 1698 } else if (sc->malo_running) 1699 malo_stop(sc); 1700 MALO_UNLOCK(sc); 1701 if (startall) 1702 ieee80211_start_all(ic); 1703 } 1704 1705 /* 1706 * Callback from the 802.11 layer to update the slot time 1707 * based on the current setting. We use it to notify the 1708 * firmware of ERP changes and the f/w takes care of things 1709 * like slot time and preamble. 1710 */ 1711 static void 1712 malo_updateslot(struct ieee80211com *ic) 1713 { 1714 struct malo_softc *sc = ic->ic_softc; 1715 struct malo_hal *mh = sc->malo_mh; 1716 int error; 1717 1718 /* NB: can be called early; suppress needless cmds */ 1719 if (!sc->malo_running) 1720 return; 1721 1722 DPRINTF(sc, MALO_DEBUG_RESET, 1723 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n", 1724 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags, 1725 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags); 1726 1727 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1728 error = malo_hal_set_slot(mh, 1); 1729 else 1730 error = malo_hal_set_slot(mh, 0); 1731 1732 if (error != 0) 1733 device_printf(sc->malo_dev, "setting %s slot failed\n", 1734 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long"); 1735 } 1736 1737 static int 1738 malo_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1739 { 1740 struct ieee80211com *ic = vap->iv_ic; 1741 struct malo_softc *sc = ic->ic_softc; 1742 struct malo_hal *mh = sc->malo_mh; 1743 int error; 1744 1745 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1746 ieee80211_state_name[vap->iv_state], 1747 ieee80211_state_name[nstate]); 1748 1749 /* 1750 * Invoke the net80211 layer first so iv_bss is setup. 1751 */ 1752 error = MALO_VAP(vap)->malo_newstate(vap, nstate, arg); 1753 if (error != 0) 1754 return error; 1755 1756 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1757 struct ieee80211_node *ni = vap->iv_bss; 1758 enum ieee80211_phymode mode = ieee80211_chan2mode(ni->ni_chan); 1759 const struct ieee80211_txparam *tp = &vap->iv_txparms[mode]; 1760 1761 DPRINTF(sc, MALO_DEBUG_STATE, 1762 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s " 1763 "capinfo 0x%04x chan %d associd 0x%x mode %d rate %d\n", 1764 vap->iv_ifp->if_xname, __func__, vap->iv_flags, 1765 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo, 1766 ieee80211_chan2ieee(ic, ic->ic_curchan), 1767 ni->ni_associd, mode, tp->ucastrate); 1768 1769 malo_hal_setradio(mh, 1, 1770 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? 1771 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE); 1772 malo_hal_setassocid(sc->malo_mh, ni->ni_bssid, ni->ni_associd); 1773 malo_hal_set_rate(mh, mode, 1774 tp->ucastrate == IEEE80211_FIXED_RATE_NONE ? 1775 0 : malo_fix2rate(tp->ucastrate)); 1776 } 1777 return 0; 1778 } 1779 1780 static int 1781 malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1782 const struct ieee80211_bpf_params *params) 1783 { 1784 struct ieee80211com *ic = ni->ni_ic; 1785 struct malo_softc *sc = ic->ic_softc; 1786 struct malo_txbuf *bf; 1787 struct malo_txq *txq; 1788 1789 if (!sc->malo_running || sc->malo_invalid) { 1790 m_freem(m); 1791 return ENETDOWN; 1792 } 1793 1794 /* 1795 * Grab a TX buffer and associated resources. Note that we depend 1796 * on the classification by the 802.11 layer to get to the right h/w 1797 * queue. Management frames must ALWAYS go on queue 1 but we 1798 * cannot just force that here because we may receive non-mgt frames. 1799 */ 1800 txq = &sc->malo_txq[0]; 1801 bf = malo_getbuf(sc, txq); 1802 if (bf == NULL) { 1803 m_freem(m); 1804 return ENOBUFS; 1805 } 1806 1807 /* 1808 * Pass the frame to the h/w for transmission. 1809 */ 1810 if (malo_tx_start(sc, ni, bf, m) != 0) { 1811 bf->bf_m = NULL; 1812 bf->bf_node = NULL; 1813 MALO_TXQ_LOCK(txq); 1814 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1815 txq->nfree++; 1816 MALO_TXQ_UNLOCK(txq); 1817 1818 return EIO; /* XXX */ 1819 } 1820 1821 /* 1822 * NB: We don't need to lock against tx done because this just 1823 * prods the firmware to check the transmit descriptors. The firmware 1824 * will also start fetching descriptors by itself if it notices 1825 * new ones are present when it goes to deliver a tx done interrupt 1826 * to the host. So if we race with tx done processing it's ok. 1827 * Delivering the kick here rather than in malo_tx_start is 1828 * an optimization to avoid poking the firmware for each packet. 1829 * 1830 * NB: the queue id isn't used so 0 is ok. 1831 */ 1832 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1833 1834 return 0; 1835 } 1836 1837 static void 1838 malo_sysctlattach(struct malo_softc *sc) 1839 { 1840 #ifdef MALO_DEBUG 1841 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev); 1842 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev); 1843 1844 sc->malo_debug = malo_debug; 1845 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 1846 "debug", CTLFLAG_RW, &sc->malo_debug, 0, 1847 "control debugging printfs"); 1848 #endif 1849 } 1850 1851 static void 1852 malo_announce(struct malo_softc *sc) 1853 { 1854 1855 device_printf(sc->malo_dev, 1856 "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n", 1857 sc->malo_hwspecs.hwversion, 1858 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff, 1859 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff, 1860 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff, 1861 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff, 1862 sc->malo_hwspecs.regioncode); 1863 1864 if (bootverbose || malo_rxbuf != MALO_RXBUF) 1865 device_printf(sc->malo_dev, 1866 "using %u rx buffers\n", malo_rxbuf); 1867 if (bootverbose || malo_txbuf != MALO_TXBUF) 1868 device_printf(sc->malo_dev, 1869 "using %u tx buffers\n", malo_txbuf); 1870 } 1871 1872 /* 1873 * Convert net80211 channel to a HAL channel. 1874 */ 1875 static void 1876 malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan) 1877 { 1878 hc->channel = chan->ic_ieee; 1879 1880 *(uint32_t *)&hc->flags = 0; 1881 if (IEEE80211_IS_CHAN_2GHZ(chan)) 1882 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ; 1883 } 1884 1885 /* 1886 * Set/change channels. If the channel is really being changed, 1887 * it's done by reseting the chip. To accomplish this we must 1888 * first cleanup any pending DMA, then restart stuff after a la 1889 * malo_init. 1890 */ 1891 static int 1892 malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan) 1893 { 1894 struct malo_hal *mh = sc->malo_mh; 1895 struct malo_hal_channel hchan; 1896 1897 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n", 1898 __func__, chan->ic_freq, chan->ic_flags); 1899 1900 /* 1901 * Convert to a HAL channel description with the flags constrained 1902 * to reflect the current operating mode. 1903 */ 1904 malo_mapchan(&hchan, chan); 1905 malo_hal_intrset(mh, 0); /* disable interrupts */ 1906 malo_hal_setchannel(mh, &hchan); 1907 malo_hal_settxpower(mh, &hchan); 1908 1909 /* 1910 * Update internal state. 1911 */ 1912 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq); 1913 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq); 1914 if (IEEE80211_IS_CHAN_ANYG(chan)) { 1915 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G); 1916 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G); 1917 } else { 1918 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B); 1919 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B); 1920 } 1921 sc->malo_curchan = hchan; 1922 malo_hal_intrset(mh, sc->malo_imask); 1923 1924 return 0; 1925 } 1926 1927 static void 1928 malo_scan_start(struct ieee80211com *ic) 1929 { 1930 struct malo_softc *sc = ic->ic_softc; 1931 1932 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 1933 } 1934 1935 static void 1936 malo_scan_end(struct ieee80211com *ic) 1937 { 1938 struct malo_softc *sc = ic->ic_softc; 1939 1940 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 1941 } 1942 1943 static void 1944 malo_set_channel(struct ieee80211com *ic) 1945 { 1946 struct malo_softc *sc = ic->ic_softc; 1947 1948 (void) malo_chan_set(sc, ic->ic_curchan); 1949 } 1950 1951 static void 1952 malo_rx_proc(void *arg, int npending) 1953 { 1954 struct malo_softc *sc = arg; 1955 struct ieee80211com *ic = &sc->malo_ic; 1956 struct malo_rxbuf *bf; 1957 struct malo_rxdesc *ds; 1958 struct mbuf *m, *mnew; 1959 struct ieee80211_qosframe *wh; 1960 struct ieee80211_qosframe_addr4 *wh4; 1961 struct ieee80211_node *ni; 1962 int off, len, hdrlen, pktlen, rssi, ntodo; 1963 uint8_t *data, status; 1964 uint32_t readptr, writeptr; 1965 1966 DPRINTF(sc, MALO_DEBUG_RX_PROC, 1967 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n", 1968 __func__, npending, 1969 sc->malo_hwspecs.rxdesc_read, 1970 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read), 1971 sc->malo_hwspecs.rxdesc_write, 1972 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write)); 1973 1974 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read); 1975 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write); 1976 if (readptr == writeptr) 1977 return; 1978 1979 bf = sc->malo_rxnext; 1980 for (ntodo = malo_rxquota; ntodo > 0 && readptr != writeptr; ntodo--) { 1981 if (bf == NULL) { 1982 bf = STAILQ_FIRST(&sc->malo_rxbuf); 1983 break; 1984 } 1985 ds = bf->bf_desc; 1986 if (bf->bf_m == NULL) { 1987 /* 1988 * If data allocation failed previously there 1989 * will be no buffer; try again to re-populate it. 1990 * Note the firmware will not advance to the next 1991 * descriptor with a dma buffer so we must mimic 1992 * this or we'll get out of sync. 1993 */ 1994 DPRINTF(sc, MALO_DEBUG_ANY, 1995 "%s: rx buf w/o dma memory\n", __func__); 1996 (void)malo_rxbuf_init(sc, bf); 1997 break; 1998 } 1999 MALO_RXDESC_SYNC(sc, ds, 2000 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2001 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN) 2002 break; 2003 2004 readptr = le32toh(ds->physnext); 2005 2006 #ifdef MALO_DEBUG 2007 if (sc->malo_debug & MALO_DEBUG_RECV_DESC) 2008 malo_printrxbuf(bf, 0); 2009 #endif 2010 status = ds->status; 2011 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) { 2012 counter_u64_add(ic->ic_ierrors, 1); 2013 goto rx_next; 2014 } 2015 /* 2016 * Sync the data buffer. 2017 */ 2018 len = le16toh(ds->pktlen); 2019 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 2020 BUS_DMASYNC_POSTREAD); 2021 /* 2022 * The 802.11 header is provided all or in part at the front; 2023 * use it to calculate the true size of the header that we'll 2024 * construct below. We use this to figure out where to copy 2025 * payload prior to constructing the header. 2026 */ 2027 m = bf->bf_m; 2028 data = mtod(m, uint8_t *); 2029 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t)); 2030 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4); 2031 2032 /* 2033 * Calculate RSSI. XXX wrong 2034 */ 2035 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */ 2036 if (rssi > 100) 2037 rssi = 100; 2038 2039 pktlen = hdrlen + (len - off); 2040 /* 2041 * NB: we know our frame is at least as large as 2042 * IEEE80211_MIN_LEN because there is a 4-address frame at 2043 * the front. Hence there's no need to vet the packet length. 2044 * If the frame in fact is too small it should be discarded 2045 * at the net80211 layer. 2046 */ 2047 2048 /* XXX don't need mbuf, just dma buffer */ 2049 mnew = malo_getrxmbuf(sc, bf); 2050 if (mnew == NULL) { 2051 counter_u64_add(ic->ic_ierrors, 1); 2052 goto rx_next; 2053 } 2054 /* 2055 * Attach the dma buffer to the mbuf; malo_rxbuf_init will 2056 * re-setup the rx descriptor using the replacement dma 2057 * buffer we just installed above. 2058 */ 2059 bf->bf_m = mnew; 2060 m->m_data += off - hdrlen; 2061 m->m_pkthdr.len = m->m_len = pktlen; 2062 2063 /* 2064 * Piece 802.11 header together. 2065 */ 2066 wh = mtod(m, struct ieee80211_qosframe *); 2067 /* NB: don't need to do this sometimes but ... */ 2068 /* XXX special case so we can memcpy after m_devget? */ 2069 ovbcopy(data + sizeof(uint16_t), wh, hdrlen); 2070 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2071 if (IEEE80211_IS_DSTODS(wh)) { 2072 wh4 = mtod(m, 2073 struct ieee80211_qosframe_addr4*); 2074 *(uint16_t *)wh4->i_qos = ds->qosctrl; 2075 } else { 2076 *(uint16_t *)wh->i_qos = ds->qosctrl; 2077 } 2078 } 2079 if (ieee80211_radiotap_active(ic)) { 2080 sc->malo_rx_th.wr_flags = 0; 2081 sc->malo_rx_th.wr_rate = ds->rate; 2082 sc->malo_rx_th.wr_antsignal = rssi; 2083 sc->malo_rx_th.wr_antnoise = ds->nf; 2084 } 2085 #ifdef MALO_DEBUG 2086 if (IFF_DUMPPKTS_RECV(sc, wh)) { 2087 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 2088 len, ds->rate, rssi); 2089 } 2090 #endif 2091 /* dispatch */ 2092 ni = ieee80211_find_rxnode(ic, 2093 (struct ieee80211_frame_min *)wh); 2094 if (ni != NULL) { 2095 (void) ieee80211_input(ni, m, rssi, ds->nf); 2096 ieee80211_free_node(ni); 2097 } else 2098 (void) ieee80211_input_all(ic, m, rssi, ds->nf); 2099 rx_next: 2100 /* NB: ignore ENOMEM so we process more descriptors */ 2101 (void) malo_rxbuf_init(sc, bf); 2102 bf = STAILQ_NEXT(bf, bf_list); 2103 } 2104 2105 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr); 2106 sc->malo_rxnext = bf; 2107 2108 if (mbufq_first(&sc->malo_snd) != NULL) 2109 malo_start(sc); 2110 } 2111 2112 /* 2113 * Reclaim all tx queue resources. 2114 */ 2115 static void 2116 malo_tx_cleanup(struct malo_softc *sc) 2117 { 2118 int i; 2119 2120 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 2121 malo_tx_cleanupq(sc, &sc->malo_txq[i]); 2122 } 2123 2124 int 2125 malo_detach(struct malo_softc *sc) 2126 { 2127 struct ieee80211com *ic = &sc->malo_ic; 2128 2129 malo_stop(sc); 2130 2131 if (sc->malo_tq != NULL) { 2132 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask); 2133 taskqueue_drain(sc->malo_tq, &sc->malo_txtask); 2134 taskqueue_free(sc->malo_tq); 2135 sc->malo_tq = NULL; 2136 } 2137 2138 /* 2139 * NB: the order of these is important: 2140 * o call the 802.11 layer before detaching the hal to 2141 * insure callbacks into the driver to delete global 2142 * key cache entries can be handled 2143 * o reclaim the tx queue data structures after calling 2144 * the 802.11 layer as we'll get called back to reclaim 2145 * node state and potentially want to use them 2146 * o to cleanup the tx queues the hal is called, so detach 2147 * it last 2148 * Other than that, it's straightforward... 2149 */ 2150 ieee80211_ifdetach(ic); 2151 callout_drain(&sc->malo_watchdog_timer); 2152 malo_dma_cleanup(sc); 2153 malo_tx_cleanup(sc); 2154 malo_hal_detach(sc->malo_mh); 2155 mbufq_drain(&sc->malo_snd); 2156 MALO_LOCK_DESTROY(sc); 2157 2158 return 0; 2159 } 2160 2161 void 2162 malo_shutdown(struct malo_softc *sc) 2163 { 2164 2165 malo_stop(sc); 2166 } 2167 2168 void 2169 malo_suspend(struct malo_softc *sc) 2170 { 2171 2172 malo_stop(sc); 2173 } 2174 2175 void 2176 malo_resume(struct malo_softc *sc) 2177 { 2178 2179 if (sc->malo_ic.ic_nrunning > 0) 2180 malo_init(sc); 2181 } 2182