if_malo.c revision 283537
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: head/sys/dev/malo/if_malo.c 283537 2015-05-25 18:50:26Z glebius $"); 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 64SYSCTL_NODE(_hw, OID_AUTO, malo, CTLFLAG_RD, 0, 65 "Marvell 88w8335 driver parameters"); 66 67static int malo_txcoalesce = 8; /* # tx pkts to q before poking f/w*/ 68SYSCTL_INT(_hw_malo, OID_AUTO, txcoalesce, CTLFLAG_RWTUN, &malo_txcoalesce, 69 0, "tx buffers to send at once"); 70static int malo_rxbuf = MALO_RXBUF; /* # rx buffers to allocate */ 71SYSCTL_INT(_hw_malo, OID_AUTO, rxbuf, CTLFLAG_RWTUN, &malo_rxbuf, 72 0, "rx buffers allocated"); 73static int malo_rxquota = MALO_RXBUF; /* # max buffers to process */ 74SYSCTL_INT(_hw_malo, OID_AUTO, rxquota, CTLFLAG_RWTUN, &malo_rxquota, 75 0, "max rx buffers to process per interrupt"); 76static int malo_txbuf = MALO_TXBUF; /* # tx buffers to allocate */ 77SYSCTL_INT(_hw_malo, OID_AUTO, txbuf, CTLFLAG_RWTUN, &malo_txbuf, 78 0, "tx buffers allocated"); 79 80#ifdef MALO_DEBUG 81static int malo_debug = 0; 82SYSCTL_INT(_hw_malo, OID_AUTO, debug, CTLFLAG_RWTUN, &malo_debug, 83 0, "control debugging printfs"); 84enum { 85 MALO_DEBUG_XMIT = 0x00000001, /* basic xmit operation */ 86 MALO_DEBUG_XMIT_DESC = 0x00000002, /* xmit descriptors */ 87 MALO_DEBUG_RECV = 0x00000004, /* basic recv operation */ 88 MALO_DEBUG_RECV_DESC = 0x00000008, /* recv descriptors */ 89 MALO_DEBUG_RESET = 0x00000010, /* reset processing */ 90 MALO_DEBUG_INTR = 0x00000040, /* ISR */ 91 MALO_DEBUG_TX_PROC = 0x00000080, /* tx ISR proc */ 92 MALO_DEBUG_RX_PROC = 0x00000100, /* rx ISR proc */ 93 MALO_DEBUG_STATE = 0x00000400, /* 802.11 state transitions */ 94 MALO_DEBUG_NODE = 0x00000800, /* node management */ 95 MALO_DEBUG_RECV_ALL = 0x00001000, /* trace all frames (beacons) */ 96 MALO_DEBUG_FW = 0x00008000, /* firmware */ 97 MALO_DEBUG_ANY = 0xffffffff 98}; 99#define IS_BEACON(wh) \ 100 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK | \ 101 IEEE80211_FC0_SUBTYPE_MASK)) == \ 102 (IEEE80211_FC0_TYPE_MGT|IEEE80211_FC0_SUBTYPE_BEACON)) 103#define IFF_DUMPPKTS_RECV(sc, wh) \ 104 (((sc->malo_debug & MALO_DEBUG_RECV) && \ 105 ((sc->malo_debug & MALO_DEBUG_RECV_ALL) || !IS_BEACON(wh))) || \ 106 (sc->malo_ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == \ 107 (IFF_DEBUG|IFF_LINK2)) 108#define IFF_DUMPPKTS_XMIT(sc) \ 109 ((sc->malo_debug & MALO_DEBUG_XMIT) || \ 110 (sc->malo_ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == \ 111 (IFF_DEBUG | IFF_LINK2)) 112#define DPRINTF(sc, m, fmt, ...) do { \ 113 if (sc->malo_debug & (m)) \ 114 printf(fmt, __VA_ARGS__); \ 115} while (0) 116#else 117#define DPRINTF(sc, m, fmt, ...) do { \ 118 (void) sc; \ 119} while (0) 120#endif 121 122static MALLOC_DEFINE(M_MALODEV, "malodev", "malo driver dma buffers"); 123 124static struct ieee80211vap *malo_vap_create(struct ieee80211com *, 125 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 126 const uint8_t [IEEE80211_ADDR_LEN], 127 const uint8_t [IEEE80211_ADDR_LEN]); 128static void malo_vap_delete(struct ieee80211vap *); 129static int malo_dma_setup(struct malo_softc *); 130static int malo_setup_hwdma(struct malo_softc *); 131static void malo_txq_init(struct malo_softc *, struct malo_txq *, int); 132static void malo_tx_cleanupq(struct malo_softc *, struct malo_txq *); 133static void malo_start(struct ifnet *); 134static void malo_watchdog(void *); 135static int malo_ioctl(struct ifnet *, u_long, caddr_t); 136static void malo_updateslot(struct ifnet *); 137static int malo_newstate(struct ieee80211vap *, enum ieee80211_state, int); 138static void malo_scan_start(struct ieee80211com *); 139static void malo_scan_end(struct ieee80211com *); 140static void malo_set_channel(struct ieee80211com *); 141static int malo_raw_xmit(struct ieee80211_node *, struct mbuf *, 142 const struct ieee80211_bpf_params *); 143static void malo_sysctlattach(struct malo_softc *); 144static void malo_announce(struct malo_softc *); 145static void malo_dma_cleanup(struct malo_softc *); 146static void malo_stop_locked(struct ifnet *, int); 147static int malo_chan_set(struct malo_softc *, struct ieee80211_channel *); 148static int malo_mode_init(struct malo_softc *); 149static void malo_tx_proc(void *, int); 150static void malo_rx_proc(void *, int); 151static void malo_init(void *); 152 153/* 154 * Read/Write shorthands for accesses to BAR 0. Note that all BAR 1 155 * operations are done in the "hal" except getting H/W MAC address at 156 * malo_attach and there should be no reference to them here. 157 */ 158static uint32_t 159malo_bar0_read4(struct malo_softc *sc, bus_size_t off) 160{ 161 return bus_space_read_4(sc->malo_io0t, sc->malo_io0h, off); 162} 163 164static void 165malo_bar0_write4(struct malo_softc *sc, bus_size_t off, uint32_t val) 166{ 167 DPRINTF(sc, MALO_DEBUG_FW, "%s: off 0x%jx val 0x%x\n", 168 __func__, (uintmax_t)off, val); 169 170 bus_space_write_4(sc->malo_io0t, sc->malo_io0h, off, val); 171} 172 173int 174malo_attach(uint16_t devid, struct malo_softc *sc) 175{ 176 int error; 177 struct ieee80211com *ic; 178 struct ifnet *ifp; 179 struct malo_hal *mh; 180 uint8_t bands; 181 182 ifp = sc->malo_ifp = if_alloc(IFT_IEEE80211); 183 if (ifp == NULL) { 184 device_printf(sc->malo_dev, "can not if_alloc()\n"); 185 return ENOSPC; 186 } 187 ic = ifp->if_l2com; 188 189 MALO_LOCK_INIT(sc); 190 callout_init_mtx(&sc->malo_watchdog_timer, &sc->malo_mtx, 0); 191 192 /* set these up early for if_printf use */ 193 if_initname(ifp, device_get_name(sc->malo_dev), 194 device_get_unit(sc->malo_dev)); 195 196 mh = malo_hal_attach(sc->malo_dev, devid, 197 sc->malo_io1h, sc->malo_io1t, sc->malo_dmat); 198 if (mh == NULL) { 199 if_printf(ifp, "unable to attach HAL\n"); 200 error = EIO; 201 goto bad; 202 } 203 sc->malo_mh = mh; 204 205 /* 206 * Load firmware so we can get setup. We arbitrarily pick station 207 * firmware; we'll re-load firmware as needed so setting up 208 * the wrong mode isn't a big deal. 209 */ 210 error = malo_hal_fwload(mh, "malo8335-h", "malo8335-m"); 211 if (error != 0) { 212 if_printf(ifp, "unable to setup firmware\n"); 213 goto bad1; 214 } 215 /* XXX gethwspecs() extracts correct informations? not maybe! */ 216 error = malo_hal_gethwspecs(mh, &sc->malo_hwspecs); 217 if (error != 0) { 218 if_printf(ifp, "unable to fetch h/w specs\n"); 219 goto bad1; 220 } 221 222 DPRINTF(sc, MALO_DEBUG_FW, 223 "malo_hal_gethwspecs: hwversion 0x%x hostif 0x%x" 224 "maxnum_wcb 0x%x maxnum_mcaddr 0x%x maxnum_tx_wcb 0x%x" 225 "regioncode 0x%x num_antenna 0x%x fw_releasenum 0x%x" 226 "wcbbase0 0x%x rxdesc_read 0x%x rxdesc_write 0x%x" 227 "ul_fw_awakecookie 0x%x w[4] = %x %x %x %x", 228 sc->malo_hwspecs.hwversion, 229 sc->malo_hwspecs.hostinterface, sc->malo_hwspecs.maxnum_wcb, 230 sc->malo_hwspecs.maxnum_mcaddr, sc->malo_hwspecs.maxnum_tx_wcb, 231 sc->malo_hwspecs.regioncode, sc->malo_hwspecs.num_antenna, 232 sc->malo_hwspecs.fw_releasenum, sc->malo_hwspecs.wcbbase0, 233 sc->malo_hwspecs.rxdesc_read, sc->malo_hwspecs.rxdesc_write, 234 sc->malo_hwspecs.ul_fw_awakecookie, 235 sc->malo_hwspecs.wcbbase[0], sc->malo_hwspecs.wcbbase[1], 236 sc->malo_hwspecs.wcbbase[2], sc->malo_hwspecs.wcbbase[3]); 237 238 /* NB: firmware looks that it does not export regdomain info API. */ 239 bands = 0; 240 setbit(&bands, IEEE80211_MODE_11B); 241 setbit(&bands, IEEE80211_MODE_11G); 242 ieee80211_init_channels(ic, NULL, &bands); 243 244 sc->malo_txantenna = 0x2; /* h/w default */ 245 sc->malo_rxantenna = 0xffff; /* h/w default */ 246 247 /* 248 * Allocate tx + rx descriptors and populate the lists. 249 * We immediately push the information to the firmware 250 * as otherwise it gets upset. 251 */ 252 error = malo_dma_setup(sc); 253 if (error != 0) { 254 if_printf(ifp, "failed to setup descriptors: %d\n", error); 255 goto bad1; 256 } 257 error = malo_setup_hwdma(sc); /* push to firmware */ 258 if (error != 0) /* NB: malo_setupdma prints msg */ 259 goto bad2; 260 261 sc->malo_tq = taskqueue_create_fast("malo_taskq", M_NOWAIT, 262 taskqueue_thread_enqueue, &sc->malo_tq); 263 taskqueue_start_threads(&sc->malo_tq, 1, PI_NET, 264 "%s taskq", ifp->if_xname); 265 266 TASK_INIT(&sc->malo_rxtask, 0, malo_rx_proc, sc); 267 TASK_INIT(&sc->malo_txtask, 0, malo_tx_proc, sc); 268 269 ifp->if_softc = sc; 270 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 271 ifp->if_start = malo_start; 272 ifp->if_ioctl = malo_ioctl; 273 ifp->if_init = malo_init; 274 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 275 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 276 IFQ_SET_READY(&ifp->if_snd); 277 278 ic->ic_ifp = ifp; 279 ic->ic_softc = sc; 280 ic->ic_name = device_get_nameunit(sc->malo_dev); 281 /* XXX not right but it's not used anywhere important */ 282 ic->ic_phytype = IEEE80211_T_OFDM; 283 ic->ic_opmode = IEEE80211_M_STA; 284 ic->ic_caps = 285 IEEE80211_C_STA /* station mode supported */ 286 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 287 | IEEE80211_C_MONITOR /* monitor mode */ 288 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 289 | IEEE80211_C_SHSLOT /* short slot time supported */ 290 | IEEE80211_C_TXPMGT /* capable of txpow mgt */ 291 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 292 ; 293 294 /* 295 * Transmit requires space in the packet for a special format transmit 296 * record and optional padding between this record and the payload. 297 * Ask the net80211 layer to arrange this when encapsulating 298 * packets so we can add it efficiently. 299 */ 300 ic->ic_headroom = sizeof(struct malo_txrec) - 301 sizeof(struct ieee80211_frame); 302 303 /* call MI attach routine. */ 304 ieee80211_ifattach(ic, sc->malo_hwspecs.macaddr); 305 /* override default methods */ 306 ic->ic_vap_create = malo_vap_create; 307 ic->ic_vap_delete = malo_vap_delete; 308 ic->ic_raw_xmit = malo_raw_xmit; 309 ic->ic_updateslot = malo_updateslot; 310 311 ic->ic_scan_start = malo_scan_start; 312 ic->ic_scan_end = malo_scan_end; 313 ic->ic_set_channel = malo_set_channel; 314 315 sc->malo_invalid = 0; /* ready to go, enable int handling */ 316 317 ieee80211_radiotap_attach(ic, 318 &sc->malo_tx_th.wt_ihdr, sizeof(sc->malo_tx_th), 319 MALO_TX_RADIOTAP_PRESENT, 320 &sc->malo_rx_th.wr_ihdr, sizeof(sc->malo_rx_th), 321 MALO_RX_RADIOTAP_PRESENT); 322 323 /* 324 * Setup dynamic sysctl's. 325 */ 326 malo_sysctlattach(sc); 327 328 if (bootverbose) 329 ieee80211_announce(ic); 330 malo_announce(sc); 331 332 return 0; 333bad2: 334 malo_dma_cleanup(sc); 335bad1: 336 malo_hal_detach(mh); 337bad: 338 if_free(ifp); 339 sc->malo_invalid = 1; 340 341 return error; 342} 343 344static struct ieee80211vap * 345malo_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 346 enum ieee80211_opmode opmode, int flags, 347 const uint8_t bssid[IEEE80211_ADDR_LEN], 348 const uint8_t mac[IEEE80211_ADDR_LEN]) 349{ 350 struct ifnet *ifp = ic->ic_ifp; 351 struct malo_vap *mvp; 352 struct ieee80211vap *vap; 353 354 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 355 if_printf(ifp, "multiple vaps not supported\n"); 356 return NULL; 357 } 358 switch (opmode) { 359 case IEEE80211_M_STA: 360 if (opmode == IEEE80211_M_STA) 361 flags |= IEEE80211_CLONE_NOBEACONS; 362 /* fall thru... */ 363 case IEEE80211_M_MONITOR: 364 break; 365 default: 366 if_printf(ifp, "%s mode not supported\n", 367 ieee80211_opmode_name[opmode]); 368 return NULL; /* unsupported */ 369 } 370 mvp = (struct malo_vap *) malloc(sizeof(struct malo_vap), 371 M_80211_VAP, M_NOWAIT | M_ZERO); 372 if (mvp == NULL) { 373 if_printf(ifp, "cannot allocate vap state block\n"); 374 return NULL; 375 } 376 vap = &mvp->malo_vap; 377 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 378 379 /* override state transition machine */ 380 mvp->malo_newstate = vap->iv_newstate; 381 vap->iv_newstate = malo_newstate; 382 383 /* complete setup */ 384 ieee80211_vap_attach(vap, 385 ieee80211_media_change, ieee80211_media_status); 386 ic->ic_opmode = opmode; 387 return vap; 388} 389 390static void 391malo_vap_delete(struct ieee80211vap *vap) 392{ 393 struct malo_vap *mvp = MALO_VAP(vap); 394 395 ieee80211_vap_detach(vap); 396 free(mvp, M_80211_VAP); 397} 398 399int 400malo_intr(void *arg) 401{ 402 struct malo_softc *sc = arg; 403 struct malo_hal *mh = sc->malo_mh; 404 uint32_t status; 405 406 if (sc->malo_invalid) { 407 /* 408 * The hardware is not ready/present, don't touch anything. 409 * Note this can happen early on if the IRQ is shared. 410 */ 411 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid; ignored\n", __func__); 412 return (FILTER_STRAY); 413 } 414 415 /* 416 * Figure out the reason(s) for the interrupt. 417 */ 418 malo_hal_getisr(mh, &status); /* NB: clears ISR too */ 419 if (status == 0) /* must be a shared irq */ 420 return (FILTER_STRAY); 421 422 DPRINTF(sc, MALO_DEBUG_INTR, "%s: status 0x%x imask 0x%x\n", 423 __func__, status, sc->malo_imask); 424 425 if (status & MALO_A2HRIC_BIT_RX_RDY) 426 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_rxtask); 427 if (status & MALO_A2HRIC_BIT_TX_DONE) 428 taskqueue_enqueue_fast(sc->malo_tq, &sc->malo_txtask); 429 if (status & MALO_A2HRIC_BIT_OPC_DONE) 430 malo_hal_cmddone(mh); 431 if (status & MALO_A2HRIC_BIT_MAC_EVENT) 432 ; 433 if (status & MALO_A2HRIC_BIT_RX_PROBLEM) 434 ; 435 if (status & MALO_A2HRIC_BIT_ICV_ERROR) { 436 /* TKIP ICV error */ 437 sc->malo_stats.mst_rx_badtkipicv++; 438 } 439#ifdef MALO_DEBUG 440 if (((status | sc->malo_imask) ^ sc->malo_imask) != 0) 441 DPRINTF(sc, MALO_DEBUG_INTR, 442 "%s: can't handle interrupt status 0x%x\n", 443 __func__, status); 444#endif 445 return (FILTER_HANDLED); 446} 447 448static void 449malo_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 450{ 451 bus_addr_t *paddr = (bus_addr_t*) arg; 452 453 KASSERT(error == 0, ("error %u on bus_dma callback", error)); 454 455 *paddr = segs->ds_addr; 456} 457 458static int 459malo_desc_setup(struct malo_softc *sc, const char *name, 460 struct malo_descdma *dd, 461 int nbuf, size_t bufsize, int ndesc, size_t descsize) 462{ 463 int error; 464 struct ifnet *ifp = sc->malo_ifp; 465 uint8_t *ds; 466 467 DPRINTF(sc, MALO_DEBUG_RESET, 468 "%s: %s DMA: %u bufs (%ju) %u desc/buf (%ju)\n", 469 __func__, name, nbuf, (uintmax_t) bufsize, 470 ndesc, (uintmax_t) descsize); 471 472 dd->dd_name = name; 473 dd->dd_desc_len = nbuf * ndesc * descsize; 474 475 /* 476 * Setup DMA descriptor area. 477 */ 478 error = bus_dma_tag_create(bus_get_dma_tag(sc->malo_dev),/* parent */ 479 PAGE_SIZE, 0, /* alignment, bounds */ 480 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 481 BUS_SPACE_MAXADDR, /* highaddr */ 482 NULL, NULL, /* filter, filterarg */ 483 dd->dd_desc_len, /* maxsize */ 484 1, /* nsegments */ 485 dd->dd_desc_len, /* maxsegsize */ 486 BUS_DMA_ALLOCNOW, /* flags */ 487 NULL, /* lockfunc */ 488 NULL, /* lockarg */ 489 &dd->dd_dmat); 490 if (error != 0) { 491 if_printf(ifp, "cannot allocate %s DMA tag\n", dd->dd_name); 492 return error; 493 } 494 495 /* allocate descriptors */ 496 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc, 497 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dd->dd_dmamap); 498 if (error != 0) { 499 if_printf(ifp, "unable to alloc memory for %u %s descriptors, " 500 "error %u\n", nbuf * ndesc, dd->dd_name, error); 501 goto fail1; 502 } 503 504 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap, 505 dd->dd_desc, dd->dd_desc_len, 506 malo_load_cb, &dd->dd_desc_paddr, BUS_DMA_NOWAIT); 507 if (error != 0) { 508 if_printf(ifp, "unable to map %s descriptors, error %u\n", 509 dd->dd_name, error); 510 goto fail2; 511 } 512 513 ds = dd->dd_desc; 514 memset(ds, 0, dd->dd_desc_len); 515 DPRINTF(sc, MALO_DEBUG_RESET, 516 "%s: %s DMA map: %p (%lu) -> 0x%jx (%lu)\n", 517 __func__, dd->dd_name, ds, (u_long) dd->dd_desc_len, 518 (uintmax_t) dd->dd_desc_paddr, /*XXX*/ (u_long) dd->dd_desc_len); 519 520 return 0; 521fail2: 522 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 523fail1: 524 bus_dma_tag_destroy(dd->dd_dmat); 525 memset(dd, 0, sizeof(*dd)); 526 return error; 527} 528 529#define DS2PHYS(_dd, _ds) \ 530 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) 531 532static int 533malo_rxdma_setup(struct malo_softc *sc) 534{ 535 struct ifnet *ifp = sc->malo_ifp; 536 int error, bsize, i; 537 struct malo_rxbuf *bf; 538 struct malo_rxdesc *ds; 539 540 error = malo_desc_setup(sc, "rx", &sc->malo_rxdma, 541 malo_rxbuf, sizeof(struct malo_rxbuf), 542 1, sizeof(struct malo_rxdesc)); 543 if (error != 0) 544 return error; 545 546 /* 547 * Allocate rx buffers and set them up. 548 */ 549 bsize = malo_rxbuf * sizeof(struct malo_rxbuf); 550 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 551 if (bf == NULL) { 552 if_printf(ifp, "malloc of %u rx buffers failed\n", bsize); 553 return error; 554 } 555 sc->malo_rxdma.dd_bufptr = bf; 556 557 STAILQ_INIT(&sc->malo_rxbuf); 558 ds = sc->malo_rxdma.dd_desc; 559 for (i = 0; i < malo_rxbuf; i++, bf++, ds++) { 560 bf->bf_desc = ds; 561 bf->bf_daddr = DS2PHYS(&sc->malo_rxdma, ds); 562 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 563 &bf->bf_dmamap); 564 if (error != 0) { 565 if_printf(ifp, "%s: unable to dmamap for rx buffer, " 566 "error %d\n", __func__, error); 567 return error; 568 } 569 /* NB: tail is intentional to preserve descriptor order */ 570 STAILQ_INSERT_TAIL(&sc->malo_rxbuf, bf, bf_list); 571 } 572 return 0; 573} 574 575static int 576malo_txdma_setup(struct malo_softc *sc, struct malo_txq *txq) 577{ 578 struct ifnet *ifp = sc->malo_ifp; 579 int error, bsize, i; 580 struct malo_txbuf *bf; 581 struct malo_txdesc *ds; 582 583 error = malo_desc_setup(sc, "tx", &txq->dma, 584 malo_txbuf, sizeof(struct malo_txbuf), 585 MALO_TXDESC, sizeof(struct malo_txdesc)); 586 if (error != 0) 587 return error; 588 589 /* allocate and setup tx buffers */ 590 bsize = malo_txbuf * sizeof(struct malo_txbuf); 591 bf = malloc(bsize, M_MALODEV, M_NOWAIT | M_ZERO); 592 if (bf == NULL) { 593 if_printf(ifp, "malloc of %u tx buffers failed\n", 594 malo_txbuf); 595 return ENOMEM; 596 } 597 txq->dma.dd_bufptr = bf; 598 599 STAILQ_INIT(&txq->free); 600 txq->nfree = 0; 601 ds = txq->dma.dd_desc; 602 for (i = 0; i < malo_txbuf; i++, bf++, ds += MALO_TXDESC) { 603 bf->bf_desc = ds; 604 bf->bf_daddr = DS2PHYS(&txq->dma, ds); 605 error = bus_dmamap_create(sc->malo_dmat, BUS_DMA_NOWAIT, 606 &bf->bf_dmamap); 607 if (error != 0) { 608 if_printf(ifp, "unable to create dmamap for tx " 609 "buffer %u, error %u\n", i, error); 610 return error; 611 } 612 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 613 txq->nfree++; 614 } 615 616 return 0; 617} 618 619static void 620malo_desc_cleanup(struct malo_softc *sc, struct malo_descdma *dd) 621{ 622 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap); 623 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap); 624 bus_dma_tag_destroy(dd->dd_dmat); 625 626 memset(dd, 0, sizeof(*dd)); 627} 628 629static void 630malo_rxdma_cleanup(struct malo_softc *sc) 631{ 632 struct malo_rxbuf *bf; 633 634 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 635 if (bf->bf_m != NULL) { 636 m_freem(bf->bf_m); 637 bf->bf_m = NULL; 638 } 639 if (bf->bf_dmamap != NULL) { 640 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 641 bf->bf_dmamap = NULL; 642 } 643 } 644 STAILQ_INIT(&sc->malo_rxbuf); 645 if (sc->malo_rxdma.dd_bufptr != NULL) { 646 free(sc->malo_rxdma.dd_bufptr, M_MALODEV); 647 sc->malo_rxdma.dd_bufptr = NULL; 648 } 649 if (sc->malo_rxdma.dd_desc_len != 0) 650 malo_desc_cleanup(sc, &sc->malo_rxdma); 651} 652 653static void 654malo_txdma_cleanup(struct malo_softc *sc, struct malo_txq *txq) 655{ 656 struct malo_txbuf *bf; 657 struct ieee80211_node *ni; 658 659 STAILQ_FOREACH(bf, &txq->free, bf_list) { 660 if (bf->bf_m != NULL) { 661 m_freem(bf->bf_m); 662 bf->bf_m = NULL; 663 } 664 ni = bf->bf_node; 665 bf->bf_node = NULL; 666 if (ni != NULL) { 667 /* 668 * Reclaim node reference. 669 */ 670 ieee80211_free_node(ni); 671 } 672 if (bf->bf_dmamap != NULL) { 673 bus_dmamap_destroy(sc->malo_dmat, bf->bf_dmamap); 674 bf->bf_dmamap = NULL; 675 } 676 } 677 STAILQ_INIT(&txq->free); 678 txq->nfree = 0; 679 if (txq->dma.dd_bufptr != NULL) { 680 free(txq->dma.dd_bufptr, M_MALODEV); 681 txq->dma.dd_bufptr = NULL; 682 } 683 if (txq->dma.dd_desc_len != 0) 684 malo_desc_cleanup(sc, &txq->dma); 685} 686 687static void 688malo_dma_cleanup(struct malo_softc *sc) 689{ 690 int i; 691 692 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 693 malo_txdma_cleanup(sc, &sc->malo_txq[i]); 694 695 malo_rxdma_cleanup(sc); 696} 697 698static int 699malo_dma_setup(struct malo_softc *sc) 700{ 701 int error, i; 702 703 /* rxdma initializing. */ 704 error = malo_rxdma_setup(sc); 705 if (error != 0) 706 return error; 707 708 /* NB: we just have 1 tx queue now. */ 709 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 710 error = malo_txdma_setup(sc, &sc->malo_txq[i]); 711 if (error != 0) { 712 malo_dma_cleanup(sc); 713 714 return error; 715 } 716 717 malo_txq_init(sc, &sc->malo_txq[i], i); 718 } 719 720 return 0; 721} 722 723static void 724malo_hal_set_rxtxdma(struct malo_softc *sc) 725{ 726 int i; 727 728 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, 729 sc->malo_hwdma.rxdesc_read); 730 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_write, 731 sc->malo_hwdma.rxdesc_read); 732 733 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 734 malo_bar0_write4(sc, 735 sc->malo_hwspecs.wcbbase[i], sc->malo_hwdma.wcbbase[i]); 736 } 737} 738 739/* 740 * Inform firmware of our tx/rx dma setup. The BAR 0 writes below are 741 * for compatibility with older firmware. For current firmware we send 742 * this information with a cmd block via malo_hal_sethwdma. 743 */ 744static int 745malo_setup_hwdma(struct malo_softc *sc) 746{ 747 int i; 748 struct malo_txq *txq; 749 750 sc->malo_hwdma.rxdesc_read = sc->malo_rxdma.dd_desc_paddr; 751 752 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 753 txq = &sc->malo_txq[i]; 754 sc->malo_hwdma.wcbbase[i] = txq->dma.dd_desc_paddr; 755 } 756 sc->malo_hwdma.maxnum_txwcb = malo_txbuf; 757 sc->malo_hwdma.maxnum_wcb = MALO_NUM_TX_QUEUES; 758 759 malo_hal_set_rxtxdma(sc); 760 761 return 0; 762} 763 764static void 765malo_txq_init(struct malo_softc *sc, struct malo_txq *txq, int qnum) 766{ 767 struct malo_txbuf *bf, *bn; 768 struct malo_txdesc *ds; 769 770 MALO_TXQ_LOCK_INIT(sc, txq); 771 txq->qnum = qnum; 772 txq->txpri = 0; /* XXX */ 773 774 STAILQ_FOREACH(bf, &txq->free, bf_list) { 775 bf->bf_txq = txq; 776 777 ds = bf->bf_desc; 778 bn = STAILQ_NEXT(bf, bf_list); 779 if (bn == NULL) 780 bn = STAILQ_FIRST(&txq->free); 781 ds->physnext = htole32(bn->bf_daddr); 782 } 783 STAILQ_INIT(&txq->active); 784} 785 786/* 787 * Reclaim resources for a setup queue. 788 */ 789static void 790malo_tx_cleanupq(struct malo_softc *sc, struct malo_txq *txq) 791{ 792 /* XXX hal work? */ 793 MALO_TXQ_LOCK_DESTROY(txq); 794} 795 796/* 797 * Allocate a tx buffer for sending a frame. 798 */ 799static struct malo_txbuf * 800malo_getbuf(struct malo_softc *sc, struct malo_txq *txq) 801{ 802 struct malo_txbuf *bf; 803 804 MALO_TXQ_LOCK(txq); 805 bf = STAILQ_FIRST(&txq->free); 806 if (bf != NULL) { 807 STAILQ_REMOVE_HEAD(&txq->free, bf_list); 808 txq->nfree--; 809 } 810 MALO_TXQ_UNLOCK(txq); 811 if (bf == NULL) { 812 DPRINTF(sc, MALO_DEBUG_XMIT, 813 "%s: out of xmit buffers on q %d\n", __func__, txq->qnum); 814 sc->malo_stats.mst_tx_qstop++; 815 } 816 return bf; 817} 818 819static int 820malo_tx_dmasetup(struct malo_softc *sc, struct malo_txbuf *bf, struct mbuf *m0) 821{ 822 struct mbuf *m; 823 int error; 824 825 /* 826 * Load the DMA map so any coalescing is done. This also calculates 827 * the number of descriptors we need. 828 */ 829 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 830 bf->bf_segs, &bf->bf_nseg, 831 BUS_DMA_NOWAIT); 832 if (error == EFBIG) { 833 /* XXX packet requires too many descriptors */ 834 bf->bf_nseg = MALO_TXDESC + 1; 835 } else if (error != 0) { 836 sc->malo_stats.mst_tx_busdma++; 837 m_freem(m0); 838 return error; 839 } 840 /* 841 * Discard null packets and check for packets that require too many 842 * TX descriptors. We try to convert the latter to a cluster. 843 */ 844 if (error == EFBIG) { /* too many desc's, linearize */ 845 sc->malo_stats.mst_tx_linear++; 846 m = m_defrag(m0, M_NOWAIT); 847 if (m == NULL) { 848 m_freem(m0); 849 sc->malo_stats.mst_tx_nombuf++; 850 return ENOMEM; 851 } 852 m0 = m; 853 error = bus_dmamap_load_mbuf_sg(sc->malo_dmat, bf->bf_dmamap, m0, 854 bf->bf_segs, &bf->bf_nseg, 855 BUS_DMA_NOWAIT); 856 if (error != 0) { 857 sc->malo_stats.mst_tx_busdma++; 858 m_freem(m0); 859 return error; 860 } 861 KASSERT(bf->bf_nseg <= MALO_TXDESC, 862 ("too many segments after defrag; nseg %u", bf->bf_nseg)); 863 } else if (bf->bf_nseg == 0) { /* null packet, discard */ 864 sc->malo_stats.mst_tx_nodata++; 865 m_freem(m0); 866 return EIO; 867 } 868 DPRINTF(sc, MALO_DEBUG_XMIT, "%s: m %p len %u\n", 869 __func__, m0, m0->m_pkthdr.len); 870 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 871 bf->bf_m = m0; 872 873 return 0; 874} 875 876#ifdef MALO_DEBUG 877static void 878malo_printrxbuf(const struct malo_rxbuf *bf, u_int ix) 879{ 880 const struct malo_rxdesc *ds = bf->bf_desc; 881 uint32_t status = le32toh(ds->status); 882 883 printf("R[%2u] (DS.V:%p DS.P:0x%jx) NEXT:%08x DATA:%08x RC:%02x%s\n" 884 " STAT:%02x LEN:%04x SNR:%02x NF:%02x CHAN:%02x" 885 " RATE:%02x QOS:%04x\n", ix, ds, (uintmax_t)bf->bf_daddr, 886 le32toh(ds->physnext), le32toh(ds->physbuffdata), 887 ds->rxcontrol, 888 ds->rxcontrol != MALO_RXD_CTRL_DRIVER_OWN ? 889 "" : (status & MALO_RXD_STATUS_OK) ? " *" : " !", 890 ds->status, le16toh(ds->pktlen), ds->snr, ds->nf, ds->channel, 891 ds->rate, le16toh(ds->qosctrl)); 892} 893 894static void 895malo_printtxbuf(const struct malo_txbuf *bf, u_int qnum, u_int ix) 896{ 897 const struct malo_txdesc *ds = bf->bf_desc; 898 uint32_t status = le32toh(ds->status); 899 900 printf("Q%u[%3u]", qnum, ix); 901 printf(" (DS.V:%p DS.P:0x%jx)\n", ds, (uintmax_t)bf->bf_daddr); 902 printf(" NEXT:%08x DATA:%08x LEN:%04x STAT:%08x%s\n", 903 le32toh(ds->physnext), 904 le32toh(ds->pktptr), le16toh(ds->pktlen), status, 905 status & MALO_TXD_STATUS_USED ? 906 "" : (status & 3) != 0 ? " *" : " !"); 907 printf(" RATE:%02x PRI:%x QOS:%04x SAP:%08x FORMAT:%04x\n", 908 ds->datarate, ds->txpriority, le16toh(ds->qosctrl), 909 le32toh(ds->sap_pktinfo), le16toh(ds->format)); 910#if 0 911 { 912 const uint8_t *cp = (const uint8_t *) ds; 913 int i; 914 for (i = 0; i < sizeof(struct malo_txdesc); i++) { 915 printf("%02x ", cp[i]); 916 if (((i+1) % 16) == 0) 917 printf("\n"); 918 } 919 printf("\n"); 920 } 921#endif 922} 923#endif /* MALO_DEBUG */ 924 925static __inline void 926malo_updatetxrate(struct ieee80211_node *ni, int rix) 927{ 928#define N(x) (sizeof(x)/sizeof(x[0])) 929 static const int ieeerates[] = 930 { 2, 4, 11, 22, 44, 12, 18, 24, 36, 48, 96, 108 }; 931 if (rix < N(ieeerates)) 932 ni->ni_txrate = ieeerates[rix]; 933#undef N 934} 935 936static int 937malo_fix2rate(int fix_rate) 938{ 939#define N(x) (sizeof(x)/sizeof(x[0])) 940 static const int rates[] = 941 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 96, 108 }; 942 return (fix_rate < N(rates) ? rates[fix_rate] : 0); 943#undef N 944} 945 946/* idiomatic shorthands: MS = mask+shift, SM = shift+mask */ 947#define MS(v,x) (((v) & x) >> x##_S) 948#define SM(v,x) (((v) << x##_S) & x) 949 950/* 951 * Process completed xmit descriptors from the specified queue. 952 */ 953static int 954malo_tx_processq(struct malo_softc *sc, struct malo_txq *txq) 955{ 956 struct malo_txbuf *bf; 957 struct malo_txdesc *ds; 958 struct ieee80211_node *ni; 959 int nreaped; 960 uint32_t status; 961 962 DPRINTF(sc, MALO_DEBUG_TX_PROC, "%s: tx queue %u\n", 963 __func__, txq->qnum); 964 for (nreaped = 0;; nreaped++) { 965 MALO_TXQ_LOCK(txq); 966 bf = STAILQ_FIRST(&txq->active); 967 if (bf == NULL) { 968 MALO_TXQ_UNLOCK(txq); 969 break; 970 } 971 ds = bf->bf_desc; 972 MALO_TXDESC_SYNC(txq, ds, 973 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 974 if (ds->status & htole32(MALO_TXD_STATUS_FW_OWNED)) { 975 MALO_TXQ_UNLOCK(txq); 976 break; 977 } 978 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 979 MALO_TXQ_UNLOCK(txq); 980 981#ifdef MALO_DEBUG 982 if (sc->malo_debug & MALO_DEBUG_XMIT_DESC) 983 malo_printtxbuf(bf, txq->qnum, nreaped); 984#endif 985 ni = bf->bf_node; 986 if (ni != NULL) { 987 status = le32toh(ds->status); 988 if (status & MALO_TXD_STATUS_OK) { 989 uint16_t format = le16toh(ds->format); 990 uint8_t txant = MS(format, MALO_TXD_ANTENNA); 991 992 sc->malo_stats.mst_ant_tx[txant]++; 993 if (status & MALO_TXD_STATUS_OK_RETRY) 994 sc->malo_stats.mst_tx_retries++; 995 if (status & MALO_TXD_STATUS_OK_MORE_RETRY) 996 sc->malo_stats.mst_tx_mretries++; 997 malo_updatetxrate(ni, ds->datarate); 998 sc->malo_stats.mst_tx_rate = ds->datarate; 999 } else { 1000 if (status & MALO_TXD_STATUS_FAILED_LINK_ERROR) 1001 sc->malo_stats.mst_tx_linkerror++; 1002 if (status & MALO_TXD_STATUS_FAILED_XRETRY) 1003 sc->malo_stats.mst_tx_xretries++; 1004 if (status & MALO_TXD_STATUS_FAILED_AGING) 1005 sc->malo_stats.mst_tx_aging++; 1006 } 1007 /* 1008 * Do any tx complete callback. Note this must 1009 * be done before releasing the node reference. 1010 * XXX no way to figure out if frame was ACK'd 1011 */ 1012 if (bf->bf_m->m_flags & M_TXCB) { 1013 /* XXX strip fw len in case header inspected */ 1014 m_adj(bf->bf_m, sizeof(uint16_t)); 1015 ieee80211_process_callback(ni, bf->bf_m, 1016 (status & MALO_TXD_STATUS_OK) == 0); 1017 } 1018 /* 1019 * Reclaim reference to node. 1020 * 1021 * NB: the node may be reclaimed here if, for example 1022 * this is a DEAUTH message that was sent and the 1023 * node was timed out due to inactivity. 1024 */ 1025 ieee80211_free_node(ni); 1026 } 1027 ds->status = htole32(MALO_TXD_STATUS_IDLE); 1028 ds->pktlen = htole32(0); 1029 1030 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 1031 BUS_DMASYNC_POSTWRITE); 1032 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1033 m_freem(bf->bf_m); 1034 bf->bf_m = NULL; 1035 bf->bf_node = NULL; 1036 1037 MALO_TXQ_LOCK(txq); 1038 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1039 txq->nfree++; 1040 MALO_TXQ_UNLOCK(txq); 1041 } 1042 return nreaped; 1043} 1044 1045/* 1046 * Deferred processing of transmit interrupt. 1047 */ 1048static void 1049malo_tx_proc(void *arg, int npending) 1050{ 1051 struct malo_softc *sc = arg; 1052 struct ifnet *ifp = sc->malo_ifp; 1053 int i, nreaped; 1054 1055 /* 1056 * Process each active queue. 1057 */ 1058 nreaped = 0; 1059 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) { 1060 if (!STAILQ_EMPTY(&sc->malo_txq[i].active)) 1061 nreaped += malo_tx_processq(sc, &sc->malo_txq[i]); 1062 } 1063 1064 if (nreaped != 0) { 1065 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1066 sc->malo_timer = 0; 1067 malo_start(ifp); 1068 } 1069} 1070 1071static int 1072malo_tx_start(struct malo_softc *sc, struct ieee80211_node *ni, 1073 struct malo_txbuf *bf, struct mbuf *m0) 1074{ 1075#define IEEE80211_DIR_DSTODS(wh) \ 1076 ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 1077#define IS_DATA_FRAME(wh) \ 1078 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK)) == IEEE80211_FC0_TYPE_DATA) 1079 int error, ismcast, iswep; 1080 int copyhdrlen, hdrlen, pktlen; 1081 struct ieee80211_frame *wh; 1082 struct ifnet *ifp = sc->malo_ifp; 1083 struct ieee80211com *ic = ifp->if_l2com; 1084 struct ieee80211vap *vap = ni->ni_vap; 1085 struct malo_txdesc *ds; 1086 struct malo_txrec *tr; 1087 struct malo_txq *txq; 1088 uint16_t qos; 1089 1090 wh = mtod(m0, struct ieee80211_frame *); 1091 iswep = wh->i_fc[1] & IEEE80211_FC1_PROTECTED; 1092 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1093 copyhdrlen = hdrlen = ieee80211_anyhdrsize(wh); 1094 pktlen = m0->m_pkthdr.len; 1095 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1096 if (IEEE80211_DIR_DSTODS(wh)) { 1097 qos = *(uint16_t *) 1098 (((struct ieee80211_qosframe_addr4 *) wh)->i_qos); 1099 copyhdrlen -= sizeof(qos); 1100 } else 1101 qos = *(uint16_t *) 1102 (((struct ieee80211_qosframe *) wh)->i_qos); 1103 } else 1104 qos = 0; 1105 1106 if (iswep) { 1107 struct ieee80211_key *k; 1108 1109 /* 1110 * Construct the 802.11 header+trailer for an encrypted 1111 * frame. The only reason this can fail is because of an 1112 * unknown or unsupported cipher/key type. 1113 * 1114 * NB: we do this even though the firmware will ignore 1115 * what we've done for WEP and TKIP as we need the 1116 * ExtIV filled in for CCMP and this also adjusts 1117 * the headers which simplifies our work below. 1118 */ 1119 k = ieee80211_crypto_encap(ni, m0); 1120 if (k == NULL) { 1121 /* 1122 * This can happen when the key is yanked after the 1123 * frame was queued. Just discard the frame; the 1124 * 802.11 layer counts failures and provides 1125 * debugging/diagnostics. 1126 */ 1127 m_freem(m0); 1128 return EIO; 1129 } 1130 1131 /* 1132 * Adjust the packet length for the crypto additions 1133 * done during encap and any other bits that the f/w 1134 * will add later on. 1135 */ 1136 pktlen = m0->m_pkthdr.len; 1137 1138 /* packet header may have moved, reset our local pointer */ 1139 wh = mtod(m0, struct ieee80211_frame *); 1140 } 1141 1142 if (ieee80211_radiotap_active_vap(vap)) { 1143 sc->malo_tx_th.wt_flags = 0; /* XXX */ 1144 if (iswep) 1145 sc->malo_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1146 sc->malo_tx_th.wt_txpower = ni->ni_txpower; 1147 sc->malo_tx_th.wt_antenna = sc->malo_txantenna; 1148 1149 ieee80211_radiotap_tx(vap, m0); 1150 } 1151 1152 /* 1153 * Copy up/down the 802.11 header; the firmware requires 1154 * we present a 2-byte payload length followed by a 1155 * 4-address header (w/o QoS), followed (optionally) by 1156 * any WEP/ExtIV header (but only filled in for CCMP). 1157 * We are assured the mbuf has sufficient headroom to 1158 * prepend in-place by the setup of ic_headroom in 1159 * malo_attach. 1160 */ 1161 if (hdrlen < sizeof(struct malo_txrec)) { 1162 const int space = sizeof(struct malo_txrec) - hdrlen; 1163 if (M_LEADINGSPACE(m0) < space) { 1164 /* NB: should never happen */ 1165 device_printf(sc->malo_dev, 1166 "not enough headroom, need %d found %zd, " 1167 "m_flags 0x%x m_len %d\n", 1168 space, M_LEADINGSPACE(m0), m0->m_flags, m0->m_len); 1169 ieee80211_dump_pkt(ic, 1170 mtod(m0, const uint8_t *), m0->m_len, 0, -1); 1171 m_freem(m0); 1172 /* XXX stat */ 1173 return EIO; 1174 } 1175 M_PREPEND(m0, space, M_NOWAIT); 1176 } 1177 tr = mtod(m0, struct malo_txrec *); 1178 if (wh != (struct ieee80211_frame *) &tr->wh) 1179 ovbcopy(wh, &tr->wh, hdrlen); 1180 /* 1181 * Note: the "firmware length" is actually the length of the fully 1182 * formed "802.11 payload". That is, it's everything except for 1183 * the 802.11 header. In particular this includes all crypto 1184 * material including the MIC! 1185 */ 1186 tr->fwlen = htole16(pktlen - hdrlen); 1187 1188 /* 1189 * Load the DMA map so any coalescing is done. This 1190 * also calculates the number of descriptors we need. 1191 */ 1192 error = malo_tx_dmasetup(sc, bf, m0); 1193 if (error != 0) 1194 return error; 1195 bf->bf_node = ni; /* NB: held reference */ 1196 m0 = bf->bf_m; /* NB: may have changed */ 1197 tr = mtod(m0, struct malo_txrec *); 1198 wh = (struct ieee80211_frame *)&tr->wh; 1199 1200 /* 1201 * Formulate tx descriptor. 1202 */ 1203 ds = bf->bf_desc; 1204 txq = bf->bf_txq; 1205 1206 ds->qosctrl = qos; /* NB: already little-endian */ 1207 ds->pktptr = htole32(bf->bf_segs[0].ds_addr); 1208 ds->pktlen = htole16(bf->bf_segs[0].ds_len); 1209 /* NB: pPhysNext setup once, don't touch */ 1210 ds->datarate = IS_DATA_FRAME(wh) ? 1 : 0; 1211 ds->sap_pktinfo = 0; 1212 ds->format = 0; 1213 1214 /* 1215 * Select transmit rate. 1216 */ 1217 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 1218 case IEEE80211_FC0_TYPE_MGT: 1219 sc->malo_stats.mst_tx_mgmt++; 1220 /* fall thru... */ 1221 case IEEE80211_FC0_TYPE_CTL: 1222 ds->txpriority = 1; 1223 break; 1224 case IEEE80211_FC0_TYPE_DATA: 1225 ds->txpriority = txq->qnum; 1226 break; 1227 default: 1228 if_printf(ifp, "bogus frame type 0x%x (%s)\n", 1229 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK, __func__); 1230 /* XXX statistic */ 1231 m_freem(m0); 1232 return EIO; 1233 } 1234 1235#ifdef MALO_DEBUG 1236 if (IFF_DUMPPKTS_XMIT(sc)) 1237 ieee80211_dump_pkt(ic, 1238 mtod(m0, const uint8_t *)+sizeof(uint16_t), 1239 m0->m_len - sizeof(uint16_t), ds->datarate, -1); 1240#endif 1241 1242 MALO_TXQ_LOCK(txq); 1243 if (!IS_DATA_FRAME(wh)) 1244 ds->status |= htole32(1); 1245 ds->status |= htole32(MALO_TXD_STATUS_FW_OWNED); 1246 STAILQ_INSERT_TAIL(&txq->active, bf, bf_list); 1247 MALO_TXDESC_SYNC(txq, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1248 1249 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1250 sc->malo_timer = 5; 1251 MALO_TXQ_UNLOCK(txq); 1252 return 0; 1253#undef IEEE80211_DIR_DSTODS 1254} 1255 1256static void 1257malo_start(struct ifnet *ifp) 1258{ 1259 struct malo_softc *sc = ifp->if_softc; 1260 struct ieee80211_node *ni; 1261 struct malo_txq *txq = &sc->malo_txq[0]; 1262 struct malo_txbuf *bf = NULL; 1263 struct mbuf *m; 1264 int nqueued = 0; 1265 1266 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) 1267 return; 1268 1269 for (;;) { 1270 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1271 if (m == NULL) 1272 break; 1273 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1274 bf = malo_getbuf(sc, txq); 1275 if (bf == NULL) { 1276 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1277 1278 /* XXX blocks other traffic */ 1279 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1280 sc->malo_stats.mst_tx_qstop++; 1281 break; 1282 } 1283 /* 1284 * Pass the frame to the h/w for transmission. 1285 */ 1286 if (malo_tx_start(sc, ni, bf, m)) { 1287 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1288 if (bf != NULL) { 1289 bf->bf_m = NULL; 1290 bf->bf_node = NULL; 1291 MALO_TXQ_LOCK(txq); 1292 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1293 MALO_TXQ_UNLOCK(txq); 1294 } 1295 ieee80211_free_node(ni); 1296 continue; 1297 } 1298 nqueued++; 1299 1300 if (nqueued >= malo_txcoalesce) { 1301 /* 1302 * Poke the firmware to process queued frames; 1303 * see below about (lack of) locking. 1304 */ 1305 nqueued = 0; 1306 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1307 } 1308 } 1309 1310 if (nqueued) { 1311 /* 1312 * NB: We don't need to lock against tx done because 1313 * this just prods the firmware to check the transmit 1314 * descriptors. The firmware will also start fetching 1315 * descriptors by itself if it notices new ones are 1316 * present when it goes to deliver a tx done interrupt 1317 * to the host. So if we race with tx done processing 1318 * it's ok. Delivering the kick here rather than in 1319 * malo_tx_start is an optimization to avoid poking the 1320 * firmware for each packet. 1321 * 1322 * NB: the queue id isn't used so 0 is ok. 1323 */ 1324 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1325 } 1326} 1327 1328static void 1329malo_watchdog(void *arg) 1330{ 1331 struct malo_softc *sc; 1332 struct ifnet *ifp; 1333 1334 sc = arg; 1335 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1336 if (sc->malo_timer == 0 || --sc->malo_timer > 0) 1337 return; 1338 1339 ifp = sc->malo_ifp; 1340 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->malo_invalid) { 1341 if_printf(ifp, "watchdog timeout\n"); 1342 1343 /* XXX no way to reset h/w. now */ 1344 1345 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1346 sc->malo_stats.mst_watchdog++; 1347 } 1348} 1349 1350static int 1351malo_hal_reset(struct malo_softc *sc) 1352{ 1353 static int first = 0; 1354 struct ifnet *ifp = sc->malo_ifp; 1355 struct ieee80211com *ic = ifp->if_l2com; 1356 struct malo_hal *mh = sc->malo_mh; 1357 1358 if (first == 0) { 1359 /* 1360 * NB: when the device firstly is initialized, sometimes 1361 * firmware could override rx/tx dma registers so we re-set 1362 * these values once. 1363 */ 1364 malo_hal_set_rxtxdma(sc); 1365 first = 1; 1366 } 1367 1368 malo_hal_setantenna(mh, MHA_ANTENNATYPE_RX, sc->malo_rxantenna); 1369 malo_hal_setantenna(mh, MHA_ANTENNATYPE_TX, sc->malo_txantenna); 1370 malo_hal_setradio(mh, 1, MHP_AUTO_PREAMBLE); 1371 malo_chan_set(sc, ic->ic_curchan); 1372 1373 /* XXX needs other stuffs? */ 1374 1375 return 1; 1376} 1377 1378static __inline struct mbuf * 1379malo_getrxmbuf(struct malo_softc *sc, struct malo_rxbuf *bf) 1380{ 1381 struct mbuf *m; 1382 bus_addr_t paddr; 1383 int error; 1384 1385 /* XXX don't need mbuf, just dma buffer */ 1386 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1387 if (m == NULL) { 1388 sc->malo_stats.mst_rx_nombuf++; /* XXX */ 1389 return NULL; 1390 } 1391 error = bus_dmamap_load(sc->malo_dmat, bf->bf_dmamap, 1392 mtod(m, caddr_t), MJUMPAGESIZE, 1393 malo_load_cb, &paddr, BUS_DMA_NOWAIT); 1394 if (error != 0) { 1395 if_printf(sc->malo_ifp, 1396 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1397 m_freem(m); 1398 return NULL; 1399 } 1400 bf->bf_data = paddr; 1401 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, BUS_DMASYNC_PREWRITE); 1402 1403 return m; 1404} 1405 1406static int 1407malo_rxbuf_init(struct malo_softc *sc, struct malo_rxbuf *bf) 1408{ 1409 struct malo_rxdesc *ds; 1410 1411 ds = bf->bf_desc; 1412 if (bf->bf_m == NULL) { 1413 bf->bf_m = malo_getrxmbuf(sc, bf); 1414 if (bf->bf_m == NULL) { 1415 /* mark descriptor to be skipped */ 1416 ds->rxcontrol = MALO_RXD_CTRL_OS_OWN; 1417 /* NB: don't need PREREAD */ 1418 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREWRITE); 1419 return ENOMEM; 1420 } 1421 } 1422 1423 /* 1424 * Setup descriptor. 1425 */ 1426 ds->qosctrl = 0; 1427 ds->snr = 0; 1428 ds->status = MALO_RXD_STATUS_IDLE; 1429 ds->channel = 0; 1430 ds->pktlen = htole16(MALO_RXSIZE); 1431 ds->nf = 0; 1432 ds->physbuffdata = htole32(bf->bf_data); 1433 /* NB: don't touch pPhysNext, set once */ 1434 ds->rxcontrol = MALO_RXD_CTRL_DRIVER_OWN; 1435 MALO_RXDESC_SYNC(sc, ds, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1436 1437 return 0; 1438} 1439 1440/* 1441 * Setup the rx data structures. This should only be done once or we may get 1442 * out of sync with the firmware. 1443 */ 1444static int 1445malo_startrecv(struct malo_softc *sc) 1446{ 1447 struct malo_rxbuf *bf, *prev; 1448 struct malo_rxdesc *ds; 1449 1450 if (sc->malo_recvsetup == 1) { 1451 malo_mode_init(sc); /* set filters, etc. */ 1452 return 0; 1453 } 1454 1455 prev = NULL; 1456 STAILQ_FOREACH(bf, &sc->malo_rxbuf, bf_list) { 1457 int error = malo_rxbuf_init(sc, bf); 1458 if (error != 0) { 1459 DPRINTF(sc, MALO_DEBUG_RECV, 1460 "%s: malo_rxbuf_init failed %d\n", 1461 __func__, error); 1462 return error; 1463 } 1464 if (prev != NULL) { 1465 ds = prev->bf_desc; 1466 ds->physnext = htole32(bf->bf_daddr); 1467 } 1468 prev = bf; 1469 } 1470 if (prev != NULL) { 1471 ds = prev->bf_desc; 1472 ds->physnext = 1473 htole32(STAILQ_FIRST(&sc->malo_rxbuf)->bf_daddr); 1474 } 1475 1476 sc->malo_recvsetup = 1; 1477 1478 malo_mode_init(sc); /* set filters, etc. */ 1479 1480 return 0; 1481} 1482 1483static void 1484malo_init_locked(struct malo_softc *sc) 1485{ 1486 struct ifnet *ifp = sc->malo_ifp; 1487 struct malo_hal *mh = sc->malo_mh; 1488 int error; 1489 1490 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1491 __func__, ifp->if_flags); 1492 1493 MALO_LOCK_ASSERT(sc); 1494 1495 /* 1496 * Stop anything previously setup. This is safe whether this is 1497 * the first time through or not. 1498 */ 1499 malo_stop_locked(ifp, 0); 1500 1501 /* 1502 * Push state to the firmware. 1503 */ 1504 if (!malo_hal_reset(sc)) { 1505 if_printf(ifp, "%s: unable to reset hardware\n", __func__); 1506 return; 1507 } 1508 1509 /* 1510 * Setup recv (once); transmit is already good to go. 1511 */ 1512 error = malo_startrecv(sc); 1513 if (error != 0) { 1514 if_printf(ifp, "%s: unable to start recv logic, error %d\n", 1515 __func__, error); 1516 return; 1517 } 1518 1519 /* 1520 * Enable interrupts. 1521 */ 1522 sc->malo_imask = MALO_A2HRIC_BIT_RX_RDY 1523 | MALO_A2HRIC_BIT_TX_DONE 1524 | MALO_A2HRIC_BIT_OPC_DONE 1525 | MALO_A2HRIC_BIT_MAC_EVENT 1526 | MALO_A2HRIC_BIT_RX_PROBLEM 1527 | MALO_A2HRIC_BIT_ICV_ERROR 1528 | MALO_A2HRIC_BIT_RADAR_DETECT 1529 | MALO_A2HRIC_BIT_CHAN_SWITCH; 1530 1531 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1532 malo_hal_intrset(mh, sc->malo_imask); 1533 callout_reset(&sc->malo_watchdog_timer, hz, malo_watchdog, sc); 1534} 1535 1536static void 1537malo_init(void *arg) 1538{ 1539 struct malo_softc *sc = (struct malo_softc *) arg; 1540 struct ifnet *ifp = sc->malo_ifp; 1541 struct ieee80211com *ic = ifp->if_l2com; 1542 1543 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags 0x%x\n", 1544 __func__, ifp->if_flags); 1545 1546 MALO_LOCK(sc); 1547 malo_init_locked(sc); 1548 1549 MALO_UNLOCK(sc); 1550 1551 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1552 ieee80211_start_all(ic); /* start all vap's */ 1553} 1554 1555/* 1556 * Set the multicast filter contents into the hardware. 1557 */ 1558static void 1559malo_setmcastfilter(struct malo_softc *sc) 1560{ 1561 struct ifnet *ifp = sc->malo_ifp; 1562 struct ieee80211com *ic = ifp->if_l2com; 1563 struct ifmultiaddr *ifma; 1564 uint8_t macs[IEEE80211_ADDR_LEN * MALO_HAL_MCAST_MAX]; 1565 uint8_t *mp; 1566 int nmc; 1567 1568 mp = macs; 1569 nmc = 0; 1570 1571 if (ic->ic_opmode == IEEE80211_M_MONITOR || 1572 (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC))) 1573 goto all; 1574 1575 if_maddr_rlock(ifp); 1576 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1577 if (ifma->ifma_addr->sa_family != AF_LINK) 1578 continue; 1579 1580 if (nmc == MALO_HAL_MCAST_MAX) { 1581 ifp->if_flags |= IFF_ALLMULTI; 1582 if_maddr_runlock(ifp); 1583 goto all; 1584 } 1585 IEEE80211_ADDR_COPY(mp, 1586 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1587 1588 mp += IEEE80211_ADDR_LEN, nmc++; 1589 } 1590 if_maddr_runlock(ifp); 1591 1592 malo_hal_setmcast(sc->malo_mh, nmc, macs); 1593 1594all: 1595 /* 1596 * XXX we don't know how to set the f/w for supporting 1597 * IFF_ALLMULTI | IFF_PROMISC cases 1598 */ 1599 return; 1600} 1601 1602static int 1603malo_mode_init(struct malo_softc *sc) 1604{ 1605 struct ifnet *ifp = sc->malo_ifp; 1606 struct ieee80211com *ic = ifp->if_l2com; 1607 struct malo_hal *mh = sc->malo_mh; 1608 1609 /* 1610 * NB: Ignore promisc in hostap mode; it's set by the 1611 * bridge. This is wrong but we have no way to 1612 * identify internal requests (from the bridge) 1613 * versus external requests such as for tcpdump. 1614 */ 1615 malo_hal_setpromisc(mh, (ifp->if_flags & IFF_PROMISC) && 1616 ic->ic_opmode != IEEE80211_M_HOSTAP); 1617 malo_setmcastfilter(sc); 1618 1619 return ENXIO; 1620} 1621 1622static void 1623malo_tx_draintxq(struct malo_softc *sc, struct malo_txq *txq) 1624{ 1625 struct ieee80211_node *ni; 1626 struct malo_txbuf *bf; 1627 u_int ix; 1628 1629 /* 1630 * NB: this assumes output has been stopped and 1631 * we do not need to block malo_tx_tasklet 1632 */ 1633 for (ix = 0;; ix++) { 1634 MALO_TXQ_LOCK(txq); 1635 bf = STAILQ_FIRST(&txq->active); 1636 if (bf == NULL) { 1637 MALO_TXQ_UNLOCK(txq); 1638 break; 1639 } 1640 STAILQ_REMOVE_HEAD(&txq->active, bf_list); 1641 MALO_TXQ_UNLOCK(txq); 1642#ifdef MALO_DEBUG 1643 if (sc->malo_debug & MALO_DEBUG_RESET) { 1644 struct ifnet *ifp = sc->malo_ifp; 1645 struct ieee80211com *ic = ifp->if_l2com; 1646 const struct malo_txrec *tr = 1647 mtod(bf->bf_m, const struct malo_txrec *); 1648 malo_printtxbuf(bf, txq->qnum, ix); 1649 ieee80211_dump_pkt(ic, (const uint8_t *)&tr->wh, 1650 bf->bf_m->m_len - sizeof(tr->fwlen), 0, -1); 1651 } 1652#endif /* MALO_DEBUG */ 1653 bus_dmamap_unload(sc->malo_dmat, bf->bf_dmamap); 1654 ni = bf->bf_node; 1655 bf->bf_node = NULL; 1656 if (ni != NULL) { 1657 /* 1658 * Reclaim node reference. 1659 */ 1660 ieee80211_free_node(ni); 1661 } 1662 m_freem(bf->bf_m); 1663 bf->bf_m = NULL; 1664 1665 MALO_TXQ_LOCK(txq); 1666 STAILQ_INSERT_TAIL(&txq->free, bf, bf_list); 1667 txq->nfree++; 1668 MALO_TXQ_UNLOCK(txq); 1669 } 1670} 1671 1672static void 1673malo_stop_locked(struct ifnet *ifp, int disable) 1674{ 1675 struct malo_softc *sc = ifp->if_softc; 1676 struct malo_hal *mh = sc->malo_mh; 1677 int i; 1678 1679 DPRINTF(sc, MALO_DEBUG_ANY, "%s: invalid %u if_flags 0x%x\n", 1680 __func__, sc->malo_invalid, ifp->if_flags); 1681 1682 MALO_LOCK_ASSERT(sc); 1683 1684 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1685 return; 1686 1687 /* 1688 * Shutdown the hardware and driver: 1689 * disable interrupts 1690 * turn off the radio 1691 * drain and release tx queues 1692 * 1693 * Note that some of this work is not possible if the hardware 1694 * is gone (invalid). 1695 */ 1696 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1697 callout_stop(&sc->malo_watchdog_timer); 1698 sc->malo_timer = 0; 1699 /* diable interrupt. */ 1700 malo_hal_intrset(mh, 0); 1701 /* turn off the radio. */ 1702 malo_hal_setradio(mh, 0, MHP_AUTO_PREAMBLE); 1703 1704 /* drain and release tx queues. */ 1705 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 1706 malo_tx_draintxq(sc, &sc->malo_txq[i]); 1707} 1708 1709static int 1710malo_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1711{ 1712#define MALO_IS_RUNNING(ifp) \ 1713 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1714 struct malo_softc *sc = ifp->if_softc; 1715 struct ieee80211com *ic = ifp->if_l2com; 1716 struct ifreq *ifr = (struct ifreq *) data; 1717 int error = 0, startall = 0; 1718 1719 MALO_LOCK(sc); 1720 switch (cmd) { 1721 case SIOCSIFFLAGS: 1722 if (MALO_IS_RUNNING(ifp)) { 1723 /* 1724 * To avoid rescanning another access point, 1725 * do not call malo_init() here. Instead, 1726 * only reflect promisc mode settings. 1727 */ 1728 malo_mode_init(sc); 1729 } else if (ifp->if_flags & IFF_UP) { 1730 /* 1731 * Beware of being called during attach/detach 1732 * to reset promiscuous mode. In that case we 1733 * will still be marked UP but not RUNNING. 1734 * However trying to re-init the interface 1735 * is the wrong thing to do as we've already 1736 * torn down much of our state. There's 1737 * probably a better way to deal with this. 1738 */ 1739 if (!sc->malo_invalid) { 1740 malo_init_locked(sc); 1741 startall = 1; 1742 } 1743 } else 1744 malo_stop_locked(ifp, 1); 1745 break; 1746 case SIOCGIFMEDIA: 1747 case SIOCSIFMEDIA: 1748 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1749 break; 1750 default: 1751 error = ether_ioctl(ifp, cmd, data); 1752 break; 1753 } 1754 MALO_UNLOCK(sc); 1755 1756 if (startall) 1757 ieee80211_start_all(ic); 1758 return error; 1759#undef MALO_IS_RUNNING 1760} 1761 1762/* 1763 * Callback from the 802.11 layer to update the slot time 1764 * based on the current setting. We use it to notify the 1765 * firmware of ERP changes and the f/w takes care of things 1766 * like slot time and preamble. 1767 */ 1768static void 1769malo_updateslot(struct ifnet *ifp) 1770{ 1771 struct malo_softc *sc = ifp->if_softc; 1772 struct ieee80211com *ic = ifp->if_l2com; 1773 struct malo_hal *mh = sc->malo_mh; 1774 int error; 1775 1776 /* NB: can be called early; suppress needless cmds */ 1777 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1778 return; 1779 1780 DPRINTF(sc, MALO_DEBUG_RESET, 1781 "%s: chan %u MHz/flags 0x%x %s slot, (ic_flags 0x%x)\n", 1782 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags, 1783 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", ic->ic_flags); 1784 1785 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1786 error = malo_hal_set_slot(mh, 1); 1787 else 1788 error = malo_hal_set_slot(mh, 0); 1789 1790 if (error != 0) 1791 device_printf(sc->malo_dev, "setting %s slot failed\n", 1792 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long"); 1793} 1794 1795static int 1796malo_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1797{ 1798 struct ieee80211com *ic = vap->iv_ic; 1799 struct malo_softc *sc = ic->ic_ifp->if_softc; 1800 struct malo_hal *mh = sc->malo_mh; 1801 int error; 1802 1803 DPRINTF(sc, MALO_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1804 ieee80211_state_name[vap->iv_state], 1805 ieee80211_state_name[nstate]); 1806 1807 /* 1808 * Invoke the net80211 layer first so iv_bss is setup. 1809 */ 1810 error = MALO_VAP(vap)->malo_newstate(vap, nstate, arg); 1811 if (error != 0) 1812 return error; 1813 1814 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1815 struct ieee80211_node *ni = vap->iv_bss; 1816 enum ieee80211_phymode mode = ieee80211_chan2mode(ni->ni_chan); 1817 const struct ieee80211_txparam *tp = &vap->iv_txparms[mode]; 1818 1819 DPRINTF(sc, MALO_DEBUG_STATE, 1820 "%s: %s(RUN): iv_flags 0x%08x bintvl %d bssid %s " 1821 "capinfo 0x%04x chan %d associd 0x%x mode %d rate %d\n", 1822 vap->iv_ifp->if_xname, __func__, vap->iv_flags, 1823 ni->ni_intval, ether_sprintf(ni->ni_bssid), ni->ni_capinfo, 1824 ieee80211_chan2ieee(ic, ic->ic_curchan), 1825 ni->ni_associd, mode, tp->ucastrate); 1826 1827 malo_hal_setradio(mh, 1, 1828 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? 1829 MHP_SHORT_PREAMBLE : MHP_LONG_PREAMBLE); 1830 malo_hal_setassocid(sc->malo_mh, ni->ni_bssid, ni->ni_associd); 1831 malo_hal_set_rate(mh, mode, 1832 tp->ucastrate == IEEE80211_FIXED_RATE_NONE ? 1833 0 : malo_fix2rate(tp->ucastrate)); 1834 } 1835 return 0; 1836} 1837 1838static int 1839malo_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1840 const struct ieee80211_bpf_params *params) 1841{ 1842 struct ieee80211com *ic = ni->ni_ic; 1843 struct ifnet *ifp = ic->ic_ifp; 1844 struct malo_softc *sc = ifp->if_softc; 1845 struct malo_txbuf *bf; 1846 struct malo_txq *txq; 1847 1848 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->malo_invalid) { 1849 ieee80211_free_node(ni); 1850 m_freem(m); 1851 return ENETDOWN; 1852 } 1853 1854 /* 1855 * Grab a TX buffer and associated resources. Note that we depend 1856 * on the classification by the 802.11 layer to get to the right h/w 1857 * queue. Management frames must ALWAYS go on queue 1 but we 1858 * cannot just force that here because we may receive non-mgt frames. 1859 */ 1860 txq = &sc->malo_txq[0]; 1861 bf = malo_getbuf(sc, txq); 1862 if (bf == NULL) { 1863 /* XXX blocks other traffic */ 1864 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1865 ieee80211_free_node(ni); 1866 m_freem(m); 1867 return ENOBUFS; 1868 } 1869 1870 /* 1871 * Pass the frame to the h/w for transmission. 1872 */ 1873 if (malo_tx_start(sc, ni, bf, m) != 0) { 1874 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1875 bf->bf_m = NULL; 1876 bf->bf_node = NULL; 1877 MALO_TXQ_LOCK(txq); 1878 STAILQ_INSERT_HEAD(&txq->free, bf, bf_list); 1879 txq->nfree++; 1880 MALO_TXQ_UNLOCK(txq); 1881 1882 ieee80211_free_node(ni); 1883 return EIO; /* XXX */ 1884 } 1885 1886 /* 1887 * NB: We don't need to lock against tx done because this just 1888 * prods the firmware to check the transmit descriptors. The firmware 1889 * will also start fetching descriptors by itself if it notices 1890 * new ones are present when it goes to deliver a tx done interrupt 1891 * to the host. So if we race with tx done processing it's ok. 1892 * Delivering the kick here rather than in malo_tx_start is 1893 * an optimization to avoid poking the firmware for each packet. 1894 * 1895 * NB: the queue id isn't used so 0 is ok. 1896 */ 1897 malo_hal_txstart(sc->malo_mh, 0/*XXX*/); 1898 1899 return 0; 1900} 1901 1902static void 1903malo_sysctlattach(struct malo_softc *sc) 1904{ 1905#ifdef MALO_DEBUG 1906 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->malo_dev); 1907 struct sysctl_oid *tree = device_get_sysctl_tree(sc->malo_dev); 1908 1909 sc->malo_debug = malo_debug; 1910 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 1911 "debug", CTLFLAG_RW, &sc->malo_debug, 0, 1912 "control debugging printfs"); 1913#endif 1914} 1915 1916static void 1917malo_announce(struct malo_softc *sc) 1918{ 1919 struct ifnet *ifp = sc->malo_ifp; 1920 1921 if_printf(ifp, "versions [hw %d fw %d.%d.%d.%d] (regioncode %d)\n", 1922 sc->malo_hwspecs.hwversion, 1923 (sc->malo_hwspecs.fw_releasenum >> 24) & 0xff, 1924 (sc->malo_hwspecs.fw_releasenum >> 16) & 0xff, 1925 (sc->malo_hwspecs.fw_releasenum >> 8) & 0xff, 1926 (sc->malo_hwspecs.fw_releasenum >> 0) & 0xff, 1927 sc->malo_hwspecs.regioncode); 1928 1929 if (bootverbose || malo_rxbuf != MALO_RXBUF) 1930 if_printf(ifp, "using %u rx buffers\n", malo_rxbuf); 1931 if (bootverbose || malo_txbuf != MALO_TXBUF) 1932 if_printf(ifp, "using %u tx buffers\n", malo_txbuf); 1933} 1934 1935/* 1936 * Convert net80211 channel to a HAL channel. 1937 */ 1938static void 1939malo_mapchan(struct malo_hal_channel *hc, const struct ieee80211_channel *chan) 1940{ 1941 hc->channel = chan->ic_ieee; 1942 1943 *(uint32_t *)&hc->flags = 0; 1944 if (IEEE80211_IS_CHAN_2GHZ(chan)) 1945 hc->flags.freqband = MALO_FREQ_BAND_2DOT4GHZ; 1946} 1947 1948/* 1949 * Set/change channels. If the channel is really being changed, 1950 * it's done by reseting the chip. To accomplish this we must 1951 * first cleanup any pending DMA, then restart stuff after a la 1952 * malo_init. 1953 */ 1954static int 1955malo_chan_set(struct malo_softc *sc, struct ieee80211_channel *chan) 1956{ 1957 struct malo_hal *mh = sc->malo_mh; 1958 struct malo_hal_channel hchan; 1959 1960 DPRINTF(sc, MALO_DEBUG_RESET, "%s: chan %u MHz/flags 0x%x\n", 1961 __func__, chan->ic_freq, chan->ic_flags); 1962 1963 /* 1964 * Convert to a HAL channel description with the flags constrained 1965 * to reflect the current operating mode. 1966 */ 1967 malo_mapchan(&hchan, chan); 1968 malo_hal_intrset(mh, 0); /* disable interrupts */ 1969 malo_hal_setchannel(mh, &hchan); 1970 malo_hal_settxpower(mh, &hchan); 1971 1972 /* 1973 * Update internal state. 1974 */ 1975 sc->malo_tx_th.wt_chan_freq = htole16(chan->ic_freq); 1976 sc->malo_rx_th.wr_chan_freq = htole16(chan->ic_freq); 1977 if (IEEE80211_IS_CHAN_ANYG(chan)) { 1978 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_G); 1979 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_G); 1980 } else { 1981 sc->malo_tx_th.wt_chan_flags = htole16(IEEE80211_CHAN_B); 1982 sc->malo_rx_th.wr_chan_flags = htole16(IEEE80211_CHAN_B); 1983 } 1984 sc->malo_curchan = hchan; 1985 malo_hal_intrset(mh, sc->malo_imask); 1986 1987 return 0; 1988} 1989 1990static void 1991malo_scan_start(struct ieee80211com *ic) 1992{ 1993 struct ifnet *ifp = ic->ic_ifp; 1994 struct malo_softc *sc = ifp->if_softc; 1995 1996 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 1997} 1998 1999static void 2000malo_scan_end(struct ieee80211com *ic) 2001{ 2002 struct ifnet *ifp = ic->ic_ifp; 2003 struct malo_softc *sc = ifp->if_softc; 2004 2005 DPRINTF(sc, MALO_DEBUG_STATE, "%s\n", __func__); 2006} 2007 2008static void 2009malo_set_channel(struct ieee80211com *ic) 2010{ 2011 struct ifnet *ifp = ic->ic_ifp; 2012 struct malo_softc *sc = ifp->if_softc; 2013 2014 (void) malo_chan_set(sc, ic->ic_curchan); 2015} 2016 2017static void 2018malo_rx_proc(void *arg, int npending) 2019{ 2020#define IEEE80211_DIR_DSTODS(wh) \ 2021 ((((const struct ieee80211_frame *)wh)->i_fc[1] & \ 2022 IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) 2023 struct malo_softc *sc = arg; 2024 struct ifnet *ifp = sc->malo_ifp; 2025 struct ieee80211com *ic = ifp->if_l2com; 2026 struct malo_rxbuf *bf; 2027 struct malo_rxdesc *ds; 2028 struct mbuf *m, *mnew; 2029 struct ieee80211_qosframe *wh; 2030 struct ieee80211_qosframe_addr4 *wh4; 2031 struct ieee80211_node *ni; 2032 int off, len, hdrlen, pktlen, rssi, ntodo; 2033 uint8_t *data, status; 2034 uint32_t readptr, writeptr; 2035 2036 DPRINTF(sc, MALO_DEBUG_RX_PROC, 2037 "%s: pending %u rdptr(0x%x) 0x%x wrptr(0x%x) 0x%x\n", 2038 __func__, npending, 2039 sc->malo_hwspecs.rxdesc_read, 2040 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read), 2041 sc->malo_hwspecs.rxdesc_write, 2042 malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write)); 2043 2044 readptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_read); 2045 writeptr = malo_bar0_read4(sc, sc->malo_hwspecs.rxdesc_write); 2046 if (readptr == writeptr) 2047 return; 2048 2049 bf = sc->malo_rxnext; 2050 for (ntodo = malo_rxquota; ntodo > 0 && readptr != writeptr; ntodo--) { 2051 if (bf == NULL) { 2052 bf = STAILQ_FIRST(&sc->malo_rxbuf); 2053 break; 2054 } 2055 ds = bf->bf_desc; 2056 if (bf->bf_m == NULL) { 2057 /* 2058 * If data allocation failed previously there 2059 * will be no buffer; try again to re-populate it. 2060 * Note the firmware will not advance to the next 2061 * descriptor with a dma buffer so we must mimic 2062 * this or we'll get out of sync. 2063 */ 2064 DPRINTF(sc, MALO_DEBUG_ANY, 2065 "%s: rx buf w/o dma memory\n", __func__); 2066 (void)malo_rxbuf_init(sc, bf); 2067 break; 2068 } 2069 MALO_RXDESC_SYNC(sc, ds, 2070 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2071 if (ds->rxcontrol != MALO_RXD_CTRL_DMA_OWN) 2072 break; 2073 2074 readptr = le32toh(ds->physnext); 2075 2076#ifdef MALO_DEBUG 2077 if (sc->malo_debug & MALO_DEBUG_RECV_DESC) 2078 malo_printrxbuf(bf, 0); 2079#endif 2080 status = ds->status; 2081 if (status & MALO_RXD_STATUS_DECRYPT_ERR_MASK) { 2082 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2083 goto rx_next; 2084 } 2085 /* 2086 * Sync the data buffer. 2087 */ 2088 len = le16toh(ds->pktlen); 2089 bus_dmamap_sync(sc->malo_dmat, bf->bf_dmamap, 2090 BUS_DMASYNC_POSTREAD); 2091 /* 2092 * The 802.11 header is provided all or in part at the front; 2093 * use it to calculate the true size of the header that we'll 2094 * construct below. We use this to figure out where to copy 2095 * payload prior to constructing the header. 2096 */ 2097 m = bf->bf_m; 2098 data = mtod(m, uint8_t *); 2099 hdrlen = ieee80211_anyhdrsize(data + sizeof(uint16_t)); 2100 off = sizeof(uint16_t) + sizeof(struct ieee80211_frame_addr4); 2101 2102 /* 2103 * Calculate RSSI. XXX wrong 2104 */ 2105 rssi = 2 * ((int) ds->snr - ds->nf); /* NB: .5 dBm */ 2106 if (rssi > 100) 2107 rssi = 100; 2108 2109 pktlen = hdrlen + (len - off); 2110 /* 2111 * NB: we know our frame is at least as large as 2112 * IEEE80211_MIN_LEN because there is a 4-address frame at 2113 * the front. Hence there's no need to vet the packet length. 2114 * If the frame in fact is too small it should be discarded 2115 * at the net80211 layer. 2116 */ 2117 2118 /* XXX don't need mbuf, just dma buffer */ 2119 mnew = malo_getrxmbuf(sc, bf); 2120 if (mnew == NULL) { 2121 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2122 goto rx_next; 2123 } 2124 /* 2125 * Attach the dma buffer to the mbuf; malo_rxbuf_init will 2126 * re-setup the rx descriptor using the replacement dma 2127 * buffer we just installed above. 2128 */ 2129 bf->bf_m = mnew; 2130 m->m_data += off - hdrlen; 2131 m->m_pkthdr.len = m->m_len = pktlen; 2132 m->m_pkthdr.rcvif = ifp; 2133 2134 /* 2135 * Piece 802.11 header together. 2136 */ 2137 wh = mtod(m, struct ieee80211_qosframe *); 2138 /* NB: don't need to do this sometimes but ... */ 2139 /* XXX special case so we can memcpy after m_devget? */ 2140 ovbcopy(data + sizeof(uint16_t), wh, hdrlen); 2141 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2142 if (IEEE80211_DIR_DSTODS(wh)) { 2143 wh4 = mtod(m, 2144 struct ieee80211_qosframe_addr4*); 2145 *(uint16_t *)wh4->i_qos = ds->qosctrl; 2146 } else { 2147 *(uint16_t *)wh->i_qos = ds->qosctrl; 2148 } 2149 } 2150 if (ieee80211_radiotap_active(ic)) { 2151 sc->malo_rx_th.wr_flags = 0; 2152 sc->malo_rx_th.wr_rate = ds->rate; 2153 sc->malo_rx_th.wr_antsignal = rssi; 2154 sc->malo_rx_th.wr_antnoise = ds->nf; 2155 } 2156#ifdef MALO_DEBUG 2157 if (IFF_DUMPPKTS_RECV(sc, wh)) { 2158 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 2159 len, ds->rate, rssi); 2160 } 2161#endif 2162 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 2163 2164 /* dispatch */ 2165 ni = ieee80211_find_rxnode(ic, 2166 (struct ieee80211_frame_min *)wh); 2167 if (ni != NULL) { 2168 (void) ieee80211_input(ni, m, rssi, ds->nf); 2169 ieee80211_free_node(ni); 2170 } else 2171 (void) ieee80211_input_all(ic, m, rssi, ds->nf); 2172rx_next: 2173 /* NB: ignore ENOMEM so we process more descriptors */ 2174 (void) malo_rxbuf_init(sc, bf); 2175 bf = STAILQ_NEXT(bf, bf_list); 2176 } 2177 2178 malo_bar0_write4(sc, sc->malo_hwspecs.rxdesc_read, readptr); 2179 sc->malo_rxnext = bf; 2180 2181 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 && 2182 !IFQ_IS_EMPTY(&ifp->if_snd)) 2183 malo_start(ifp); 2184#undef IEEE80211_DIR_DSTODS 2185} 2186 2187static void 2188malo_stop(struct ifnet *ifp, int disable) 2189{ 2190 struct malo_softc *sc = ifp->if_softc; 2191 2192 MALO_LOCK(sc); 2193 malo_stop_locked(ifp, disable); 2194 MALO_UNLOCK(sc); 2195} 2196 2197/* 2198 * Reclaim all tx queue resources. 2199 */ 2200static void 2201malo_tx_cleanup(struct malo_softc *sc) 2202{ 2203 int i; 2204 2205 for (i = 0; i < MALO_NUM_TX_QUEUES; i++) 2206 malo_tx_cleanupq(sc, &sc->malo_txq[i]); 2207} 2208 2209int 2210malo_detach(struct malo_softc *sc) 2211{ 2212 struct ifnet *ifp = sc->malo_ifp; 2213 struct ieee80211com *ic = ifp->if_l2com; 2214 2215 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2216 __func__, ifp->if_flags); 2217 2218 malo_stop(ifp, 1); 2219 2220 if (sc->malo_tq != NULL) { 2221 taskqueue_drain(sc->malo_tq, &sc->malo_rxtask); 2222 taskqueue_drain(sc->malo_tq, &sc->malo_txtask); 2223 taskqueue_free(sc->malo_tq); 2224 sc->malo_tq = NULL; 2225 } 2226 2227 /* 2228 * NB: the order of these is important: 2229 * o call the 802.11 layer before detaching the hal to 2230 * insure callbacks into the driver to delete global 2231 * key cache entries can be handled 2232 * o reclaim the tx queue data structures after calling 2233 * the 802.11 layer as we'll get called back to reclaim 2234 * node state and potentially want to use them 2235 * o to cleanup the tx queues the hal is called, so detach 2236 * it last 2237 * Other than that, it's straightforward... 2238 */ 2239 ieee80211_ifdetach(ic); 2240 callout_drain(&sc->malo_watchdog_timer); 2241 malo_dma_cleanup(sc); 2242 malo_tx_cleanup(sc); 2243 malo_hal_detach(sc->malo_mh); 2244 if_free(ifp); 2245 2246 MALO_LOCK_DESTROY(sc); 2247 2248 return 0; 2249} 2250 2251void 2252malo_shutdown(struct malo_softc *sc) 2253{ 2254 malo_stop(sc->malo_ifp, 1); 2255} 2256 2257void 2258malo_suspend(struct malo_softc *sc) 2259{ 2260 struct ifnet *ifp = sc->malo_ifp; 2261 2262 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2263 __func__, ifp->if_flags); 2264 2265 malo_stop(ifp, 1); 2266} 2267 2268void 2269malo_resume(struct malo_softc *sc) 2270{ 2271 struct ifnet *ifp = sc->malo_ifp; 2272 2273 DPRINTF(sc, MALO_DEBUG_ANY, "%s: if_flags %x\n", 2274 __func__, ifp->if_flags); 2275 2276 if (ifp->if_flags & IFF_UP) 2277 malo_init(sc); 2278} 2279