sys/dev/ipw/if_ipw.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2004-2006
   5  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   6  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   7  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 /*-
  36  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  37  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  38  */
  39
  40 #include <sys/param.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/sockio.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/kernel.h>
  45 #include <sys/socket.h>
  46 #include <sys/systm.h>
  47 #include <sys/malloc.h>
  48 #include <sys/queue.h>
  49 #include <sys/taskqueue.h>
  50 #include <sys/module.h>
  51 #include <sys/bus.h>
  52 #include <sys/endian.h>
  53 #include <sys/linker.h>
  54 #include <sys/firmware.h>
  55
  56 #include <machine/bus.h>
  57 #include <machine/resource.h>
  58 #include <sys/rman.h>
  59
  60 #include <dev/pci/pcireg.h>
  61 #include <dev/pci/pcivar.h>
  62
  63 #include <net/bpf.h>
  64 #include <net/if.h>
  65 #include <net/if_var.h>
  66 #include <net/if_arp.h>
  67 #include <net/ethernet.h>
  68 #include <net/if_dl.h>
  69 #include <net/if_media.h>
  70 #include <net/if_types.h>
  71
  72 #include <net80211/ieee80211_var.h>
  73 #include <net80211/ieee80211_radiotap.h>
  74
  75 #include <netinet/in.h>
  76 #include <netinet/in_systm.h>
  77 #include <netinet/in_var.h>
  78 #include <netinet/ip.h>
  79 #include <netinet/if_ether.h>
  80
  81 #include <dev/ipw/if_ipwreg.h>
  82 #include <dev/ipw/if_ipwvar.h>
  83
  84 #define IPW_DEBUG
  85 #ifdef IPW_DEBUG
  86 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  87 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  88 int ipw_debug = 0;
  89 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  90 #else
  91 #define DPRINTF(x)
  92 #define DPRINTFN(n, x)
  93 #endif
  94
  95 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  96 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  97 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  98
  99 struct ipw_ident {
 100         uint16_t        vendor;
 101         uint16_t        device;
 102         const char      *name;
 103 };
 104
 105 static const struct ipw_ident ipw_ident_table[] = {
 106         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 107
 108         { 0, 0, NULL }
 109 };
 110
 111 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 112                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 113                     const uint8_t [IEEE80211_ADDR_LEN],
 114                     const uint8_t [IEEE80211_ADDR_LEN]);
 115 static void     ipw_vap_delete(struct ieee80211vap *);
 116 static int      ipw_dma_alloc(struct ipw_softc *);
 117 static void     ipw_release(struct ipw_softc *);
 118 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 119 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 120 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 121 static uint16_t ipw_read_chanmask(struct ipw_softc *);
 122 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 123 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 124 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 125                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 126 static void     ipw_rx_intr(struct ipw_softc *);
 127 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 128 static void     ipw_tx_intr(struct ipw_softc *);
 129 static void     ipw_intr(void *);
 130 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 131 static const char * ipw_cmdname(int);
 132 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 133 static int      ipw_tx_start(struct ipw_softc *, struct mbuf *,
 134                     struct ieee80211_node *);
 135 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 136                     const struct ieee80211_bpf_params *);
 137 static int      ipw_transmit(struct ieee80211com *, struct mbuf *);
 138 static void     ipw_start(struct ipw_softc *);
 139 static void     ipw_watchdog(void *);
 140 static void     ipw_parent(struct ieee80211com *);
 141 static void     ipw_stop_master(struct ipw_softc *);
 142 static int      ipw_enable(struct ipw_softc *);
 143 static int      ipw_disable(struct ipw_softc *);
 144 static int      ipw_reset(struct ipw_softc *);
 145 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 146 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 147 static int      ipw_config(struct ipw_softc *);
 148 static void     ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
 149 static void     ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
 150 static void     ipw_init_task(void *, int);
 151 static void     ipw_init(void *);
 152 static void     ipw_init_locked(struct ipw_softc *);
 153 static void     ipw_stop(void *);
 154 static void     ipw_stop_locked(struct ipw_softc *);
 155 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 156 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 157 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 158 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 159 #if 0
 160 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 161                     uint32_t *);
 162 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 163                     bus_size_t);
 164 #endif
 165 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 166                     const uint8_t *, bus_size_t);
 167 static int      ipw_scan(struct ipw_softc *);
 168 static void     ipw_scan_start(struct ieee80211com *);
 169 static void     ipw_scan_end(struct ieee80211com *);
 170 static void     ipw_getradiocaps(struct ieee80211com *, int, int *,
 171                     struct ieee80211_channel[]);
 172 static void     ipw_set_channel(struct ieee80211com *);
 173 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 174                     unsigned long maxdwell);
 175 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 176
 177 static int ipw_probe(device_t);
 178 static int ipw_attach(device_t);
 179 static int ipw_detach(device_t);
 180 static int ipw_shutdown(device_t);
 181 static int ipw_suspend(device_t);
 182 static int ipw_resume(device_t);
 183
 184 static device_method_t ipw_methods[] = {
 185         /* Device interface */
 186         DEVMETHOD(device_probe,         ipw_probe),
 187         DEVMETHOD(device_attach,        ipw_attach),
 188         DEVMETHOD(device_detach,        ipw_detach),
 189         DEVMETHOD(device_shutdown,      ipw_shutdown),
 190         DEVMETHOD(device_suspend,       ipw_suspend),
 191         DEVMETHOD(device_resume,        ipw_resume),
 192
 193         DEVMETHOD_END
 194 };
 195
 196 static driver_t ipw_driver = {
 197         "ipw",
 198         ipw_methods,
 199         sizeof (struct ipw_softc)
 200 };
 201
 202 static devclass_t ipw_devclass;
 203
 204 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL);
 205 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, ipw, ipw_ident_table,
 206     nitems(ipw_ident_table) - 1);
 207
 208 MODULE_VERSION(ipw, 1);
 209
 210 static int
 211 ipw_probe(device_t dev)
 212 {
 213         const struct ipw_ident *ident;
 214
 215         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 216                 if (pci_get_vendor(dev) == ident->vendor &&
 217                     pci_get_device(dev) == ident->device) {
 218                         device_set_desc(dev, ident->name);
 219                         return (BUS_PROBE_DEFAULT);
 220                 }
 221         }
 222         return ENXIO;
 223 }
 224
 225 /* Base Address Register */
 226 static int
 227 ipw_attach(device_t dev)
 228 {
 229         struct ipw_softc *sc = device_get_softc(dev);
 230         struct ieee80211com *ic = &sc->sc_ic;
 231         uint16_t val;
 232         int error, i;
 233
 234         sc->sc_dev = dev;
 235
 236         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 237             MTX_DEF | MTX_RECURSE);
 238         mbufq_init(&sc->sc_snd, ifqmaxlen);
 239         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 240         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 241
 242         pci_write_config(dev, 0x41, 0, 1);
 243
 244         /* enable bus-mastering */
 245         pci_enable_busmaster(dev);
 246
 247         i = PCIR_BAR(0);
 248         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 249         if (sc->mem == NULL) {
 250                 device_printf(dev, "could not allocate memory resource\n");
 251                 goto fail;
 252         }
 253
 254         sc->sc_st = rman_get_bustag(sc->mem);
 255         sc->sc_sh = rman_get_bushandle(sc->mem);
 256
 257         i = 0;
 258         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 259             RF_ACTIVE | RF_SHAREABLE);
 260         if (sc->irq == NULL) {
 261                 device_printf(dev, "could not allocate interrupt resource\n");
 262                 goto fail1;
 263         }
 264
 265         if (ipw_reset(sc) != 0) {
 266                 device_printf(dev, "could not reset adapter\n");
 267                 goto fail2;
 268         }
 269
 270         if (ipw_dma_alloc(sc) != 0) {
 271                 device_printf(dev, "could not allocate DMA resources\n");
 272                 goto fail2;
 273         }
 274
 275         ic->ic_softc = sc;
 276         ic->ic_name = device_get_nameunit(dev);
 277         ic->ic_opmode = IEEE80211_M_STA;
 278         ic->ic_phytype = IEEE80211_T_DS;
 279
 280         /* set device capabilities */
 281         ic->ic_caps =
 282                   IEEE80211_C_STA               /* station mode supported */
 283                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 284                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 285                 | IEEE80211_C_PMGT              /* power save supported */
 286                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 287                 | IEEE80211_C_WPA               /* 802.11i supported */
 288                 ;
 289
 290         /* read MAC address from EEPROM */
 291         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 292         ic->ic_macaddr[0] = val >> 8;
 293         ic->ic_macaddr[1] = val & 0xff;
 294         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 295         ic->ic_macaddr[2] = val >> 8;
 296         ic->ic_macaddr[3] = val & 0xff;
 297         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 298         ic->ic_macaddr[4] = val >> 8;
 299         ic->ic_macaddr[5] = val & 0xff;
 300
 301         sc->chanmask = ipw_read_chanmask(sc);
 302         ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
 303             ic->ic_channels);
 304
 305         /* check support for radio transmitter switch in EEPROM */
 306         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 307                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 308
 309         ieee80211_ifattach(ic);
 310         ic->ic_scan_start = ipw_scan_start;
 311         ic->ic_scan_end = ipw_scan_end;
 312         ic->ic_getradiocaps = ipw_getradiocaps;
 313         ic->ic_set_channel = ipw_set_channel;
 314         ic->ic_scan_curchan = ipw_scan_curchan;
 315         ic->ic_scan_mindwell = ipw_scan_mindwell;
 316         ic->ic_raw_xmit = ipw_raw_xmit;
 317         ic->ic_vap_create = ipw_vap_create;
 318         ic->ic_vap_delete = ipw_vap_delete;
 319         ic->ic_transmit = ipw_transmit;
 320         ic->ic_parent = ipw_parent;
 321
 322         ieee80211_radiotap_attach(ic,
 323             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 324                 IPW_TX_RADIOTAP_PRESENT,
 325             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 326                 IPW_RX_RADIOTAP_PRESENT);
 327
 328         /*
 329          * Add a few sysctl knobs.
 330          */
 331         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 332             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 333             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 334             "radio transmitter switch state (0=off, 1=on)");
 335
 336         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 337             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 338             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 339             "statistics");
 340
 341         /*
 342          * Hook our interrupt after all initialization is complete.
 343          */
 344         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 345             NULL, ipw_intr, sc, &sc->sc_ih);
 346         if (error != 0) {
 347                 device_printf(dev, "could not set up interrupt\n");
 348                 goto fail3;
 349         }
 350
 351         if (bootverbose)
 352                 ieee80211_announce(ic);
 353
 354         return 0;
 355 fail3:
 356         ipw_release(sc);
 357 fail2:
 358         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 359 fail1:
 360         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 361             sc->mem);
 362 fail:
 363         mtx_destroy(&sc->sc_mtx);
 364         return ENXIO;
 365 }
 366
 367 static int
 368 ipw_detach(device_t dev)
 369 {
 370         struct ipw_softc *sc = device_get_softc(dev);
 371         struct ieee80211com *ic = &sc->sc_ic;
 372
 373         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 374
 375         ieee80211_draintask(ic, &sc->sc_init_task);
 376         ipw_stop(sc);
 377
 378         ieee80211_ifdetach(ic);
 379
 380         callout_drain(&sc->sc_wdtimer);
 381         mbufq_drain(&sc->sc_snd);
 382
 383         ipw_release(sc);
 384
 385         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 386
 387         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 388             sc->mem);
 389
 390         if (sc->sc_firmware != NULL) {
 391                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 392                 sc->sc_firmware = NULL;
 393         }
 394
 395         mtx_destroy(&sc->sc_mtx);
 396
 397         return 0;
 398 }
 399
 400 static struct ieee80211vap *
 401 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 402     enum ieee80211_opmode opmode, int flags,
 403     const uint8_t bssid[IEEE80211_ADDR_LEN],
 404     const uint8_t mac[IEEE80211_ADDR_LEN])
 405 {
 406         struct ipw_softc *sc = ic->ic_softc;
 407         struct ipw_vap *ivp;
 408         struct ieee80211vap *vap;
 409         const struct firmware *fp;
 410         const struct ipw_firmware_hdr *hdr;
 411         const char *imagename;
 412
 413         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 414                 return NULL;
 415
 416         switch (opmode) {
 417         case IEEE80211_M_STA:
 418                 imagename = "ipw_bss";
 419                 break;
 420         case IEEE80211_M_IBSS:
 421                 imagename = "ipw_ibss";
 422                 break;
 423         case IEEE80211_M_MONITOR:
 424                 imagename = "ipw_monitor";
 425                 break;
 426         default:
 427                 return NULL;
 428         }
 429
 430         /*
 431          * Load firmware image using the firmware(9) subsystem.  Doing
 432          * this unlocked is ok since we're single-threaded by the
 433          * 802.11 layer.
 434          */
 435         if (sc->sc_firmware == NULL ||
 436             strcmp(sc->sc_firmware->name, imagename) != 0) {
 437                 if (sc->sc_firmware != NULL)
 438                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 439                 sc->sc_firmware = firmware_get(imagename);
 440         }
 441         if (sc->sc_firmware == NULL) {
 442                 device_printf(sc->sc_dev,
 443                     "could not load firmware image '%s'\n", imagename);
 444                 return NULL;
 445         }
 446         fp = sc->sc_firmware;
 447         if (fp->datasize < sizeof *hdr) {
 448                 device_printf(sc->sc_dev,
 449                     "firmware image too short %zu\n", fp->datasize);
 450                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 451                 sc->sc_firmware = NULL;
 452                 return NULL;
 453         }
 454         hdr = (const struct ipw_firmware_hdr *)fp->data;
 455         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 456             le32toh(hdr->ucodesz)) {
 457                 device_printf(sc->sc_dev,
 458                     "firmware image too short %zu\n", fp->datasize);
 459                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 460                 sc->sc_firmware = NULL;
 461                 return NULL;
 462         }
 463
 464         ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 465         vap = &ivp->vap;
 466
 467         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 468         /* override with driver methods */
 469         ivp->newstate = vap->iv_newstate;
 470         vap->iv_newstate = ipw_newstate;
 471
 472         /* complete setup */
 473         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status,
 474             mac);
 475         ic->ic_opmode = opmode;
 476         return vap;
 477 }
 478
 479 static void
 480 ipw_vap_delete(struct ieee80211vap *vap)
 481 {
 482         struct ipw_vap *ivp = IPW_VAP(vap);
 483
 484         ieee80211_vap_detach(vap);
 485         free(ivp, M_80211_VAP);
 486 }
 487
 488 static int
 489 ipw_dma_alloc(struct ipw_softc *sc)
 490 {
 491         struct ipw_soft_bd *sbd;
 492         struct ipw_soft_hdr *shdr;
 493         struct ipw_soft_buf *sbuf;
 494         bus_addr_t physaddr;
 495         int error, i;
 496
 497         /*
 498          * Allocate parent DMA tag for subsequent allocations.
 499          */
 500         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 501             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 502             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 503             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 504         if (error != 0) {
 505                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 506                 goto fail;
 507         }
 508
 509         /*
 510          * Allocate and map tx ring.
 511          */
 512         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 513             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 514             NULL, &sc->tbd_dmat);
 515         if (error != 0) {
 516                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 517                 goto fail;
 518         }
 519
 520         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 521             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 522         if (error != 0) {
 523                 device_printf(sc->sc_dev,
 524                     "could not allocate tx ring DMA memory\n");
 525                 goto fail;
 526         }
 527
 528         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 529             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 530         if (error != 0) {
 531                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 532                 goto fail;
 533         }
 534
 535         /*
 536          * Allocate and map rx ring.
 537          */
 538         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 539             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 540             NULL, &sc->rbd_dmat);
 541         if (error != 0) {
 542                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 543                 goto fail;
 544         }
 545
 546         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 547             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 548         if (error != 0) {
 549                 device_printf(sc->sc_dev,
 550                     "could not allocate rx ring DMA memory\n");
 551                 goto fail;
 552         }
 553
 554         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 555             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 556         if (error != 0) {
 557                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 558                 goto fail;
 559         }
 560
 561         /*
 562          * Allocate and map status ring.
 563          */
 564         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 565             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 566             NULL, NULL, &sc->status_dmat);
 567         if (error != 0) {
 568                 device_printf(sc->sc_dev,
 569                     "could not create status ring DMA tag\n");
 570                 goto fail;
 571         }
 572
 573         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 574             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 575         if (error != 0) {
 576                 device_printf(sc->sc_dev,
 577                     "could not allocate status ring DMA memory\n");
 578                 goto fail;
 579         }
 580
 581         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 582             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 583             0);
 584         if (error != 0) {
 585                 device_printf(sc->sc_dev,
 586                     "could not map status ring DMA memory\n");
 587                 goto fail;
 588         }
 589
 590         /*
 591          * Allocate command DMA map.
 592          */
 593         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 594             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 595             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 596         if (error != 0) {
 597                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 598                 goto fail;
 599         }
 600
 601         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 602         if (error != 0) {
 603                 device_printf(sc->sc_dev,
 604                     "could not create command DMA map\n");
 605                 goto fail;
 606         }
 607
 608         /*
 609          * Allocate headers DMA maps.
 610          */
 611         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 612             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 613             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 614         if (error != 0) {
 615                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 616                 goto fail;
 617         }
 618
 619         SLIST_INIT(&sc->free_shdr);
 620         for (i = 0; i < IPW_NDATA; i++) {
 621                 shdr = &sc->shdr_list[i];
 622                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 623                 if (error != 0) {
 624                         device_printf(sc->sc_dev,
 625                             "could not create header DMA map\n");
 626                         goto fail;
 627                 }
 628                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 629         }
 630
 631         /*
 632          * Allocate tx buffers DMA maps.
 633          */
 634         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 635             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 636             NULL, NULL, &sc->txbuf_dmat);
 637         if (error != 0) {
 638                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 639                 goto fail;
 640         }
 641
 642         SLIST_INIT(&sc->free_sbuf);
 643         for (i = 0; i < IPW_NDATA; i++) {
 644                 sbuf = &sc->tx_sbuf_list[i];
 645                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 646                 if (error != 0) {
 647                         device_printf(sc->sc_dev,
 648                             "could not create tx DMA map\n");
 649                         goto fail;
 650                 }
 651                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 652         }
 653
 654         /*
 655          * Initialize tx ring.
 656          */
 657         for (i = 0; i < IPW_NTBD; i++) {
 658                 sbd = &sc->stbd_list[i];
 659                 sbd->bd = &sc->tbd_list[i];
 660                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 661         }
 662
 663         /*
 664          * Pre-allocate rx buffers and DMA maps.
 665          */
 666         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 667             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 668             NULL, &sc->rxbuf_dmat);
 669         if (error != 0) {
 670                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 671                 goto fail;
 672         }
 673
 674         for (i = 0; i < IPW_NRBD; i++) {
 675                 sbd = &sc->srbd_list[i];
 676                 sbuf = &sc->rx_sbuf_list[i];
 677                 sbd->bd = &sc->rbd_list[i];
 678
 679                 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 680                 if (sbuf->m == NULL) {
 681                         device_printf(sc->sc_dev,
 682                             "could not allocate rx mbuf\n");
 683                         error = ENOMEM;
 684                         goto fail;
 685                 }
 686
 687                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 688                 if (error != 0) {
 689                         device_printf(sc->sc_dev,
 690                             "could not create rx DMA map\n");
 691                         goto fail;
 692                 }
 693
 694                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 695                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 696                     &physaddr, 0);
 697                 if (error != 0) {
 698                         device_printf(sc->sc_dev,
 699                             "could not map rx DMA memory\n");
 700                         goto fail;
 701                 }
 702
 703                 sbd->type = IPW_SBD_TYPE_DATA;
 704                 sbd->priv = sbuf;
 705                 sbd->bd->physaddr = htole32(physaddr);
 706                 sbd->bd->len = htole32(MCLBYTES);
 707         }
 708
 709         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 710
 711         return 0;
 712
 713 fail:   ipw_release(sc);
 714         return error;
 715 }
 716
 717 static void
 718 ipw_release(struct ipw_softc *sc)
 719 {
 720         struct ipw_soft_buf *sbuf;
 721         int i;
 722
 723         if (sc->parent_dmat != NULL) {
 724                 bus_dma_tag_destroy(sc->parent_dmat);
 725         }
 726
 727         if (sc->tbd_dmat != NULL) {
 728                 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 729                 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map);
 730                 bus_dma_tag_destroy(sc->tbd_dmat);
 731         }
 732
 733         if (sc->rbd_dmat != NULL) {
 734                 if (sc->rbd_list != NULL) {
 735                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 736                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 737                             sc->rbd_map);
 738                 }
 739                 bus_dma_tag_destroy(sc->rbd_dmat);
 740         }
 741
 742         if (sc->status_dmat != NULL) {
 743                 if (sc->status_list != NULL) {
 744                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 745                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 746                             sc->status_map);
 747                 }
 748                 bus_dma_tag_destroy(sc->status_dmat);
 749         }
 750
 751         for (i = 0; i < IPW_NTBD; i++)
 752                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 753
 754         if (sc->cmd_dmat != NULL) {
 755                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 756                 bus_dma_tag_destroy(sc->cmd_dmat);
 757         }
 758
 759         if (sc->hdr_dmat != NULL) {
 760                 for (i = 0; i < IPW_NDATA; i++)
 761                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 762                 bus_dma_tag_destroy(sc->hdr_dmat);
 763         }
 764
 765         if (sc->txbuf_dmat != NULL) {
 766                 for (i = 0; i < IPW_NDATA; i++) {
 767                         bus_dmamap_destroy(sc->txbuf_dmat,
 768                             sc->tx_sbuf_list[i].map);
 769                 }
 770                 bus_dma_tag_destroy(sc->txbuf_dmat);
 771         }
 772
 773         if (sc->rxbuf_dmat != NULL) {
 774                 for (i = 0; i < IPW_NRBD; i++) {
 775                         sbuf = &sc->rx_sbuf_list[i];
 776                         if (sbuf->m != NULL) {
 777                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 778                                     BUS_DMASYNC_POSTREAD);
 779                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 780                                 m_freem(sbuf->m);
 781                         }
 782                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 783                 }
 784                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 785         }
 786 }
 787
 788 static int
 789 ipw_shutdown(device_t dev)
 790 {
 791         struct ipw_softc *sc = device_get_softc(dev);
 792
 793         ipw_stop(sc);
 794
 795         return 0;
 796 }
 797
 798 static int
 799 ipw_suspend(device_t dev)
 800 {
 801         struct ipw_softc *sc = device_get_softc(dev);
 802         struct ieee80211com *ic = &sc->sc_ic;
 803
 804         ieee80211_suspend_all(ic);
 805         return 0;
 806 }
 807
 808 static int
 809 ipw_resume(device_t dev)
 810 {
 811         struct ipw_softc *sc = device_get_softc(dev);
 812         struct ieee80211com *ic = &sc->sc_ic;
 813
 814         pci_write_config(dev, 0x41, 0, 1);
 815
 816         ieee80211_resume_all(ic);
 817         return 0;
 818 }
 819
 820 static int
 821 ipw_cvtrate(int ipwrate)
 822 {
 823         switch (ipwrate) {
 824         case IPW_RATE_DS1:      return 2;
 825         case IPW_RATE_DS2:      return 4;
 826         case IPW_RATE_DS5:      return 11;
 827         case IPW_RATE_DS11:     return 22;
 828         }
 829         return 0;
 830 }
 831
 832 /*
 833  * The firmware automatically adapts the transmit speed. We report its current
 834  * value here.
 835  */
 836 static void
 837 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 838 {
 839         struct ieee80211vap *vap = ifp->if_softc;
 840         struct ieee80211com *ic = vap->iv_ic;
 841         struct ipw_softc *sc = ic->ic_softc;
 842
 843         /* read current transmission rate from adapter */
 844         vap->iv_bss->ni_txrate = ipw_cvtrate(
 845             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 846         ieee80211_media_status(ifp, imr);
 847 }
 848
 849 static int
 850 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 851 {
 852         struct ipw_vap *ivp = IPW_VAP(vap);
 853         struct ieee80211com *ic = vap->iv_ic;
 854         struct ipw_softc *sc = ic->ic_softc;
 855         enum ieee80211_state ostate;
 856
 857         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 858                 ieee80211_state_name[vap->iv_state],
 859                 ieee80211_state_name[nstate], sc->flags));
 860
 861         ostate = vap->iv_state;
 862         IEEE80211_UNLOCK(ic);
 863
 864         switch (nstate) {
 865         case IEEE80211_S_RUN:
 866                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 867                         /*
 868                          * XXX when joining an ibss network we are called
 869                          * with a SCAN -> RUN transition on scan complete.
 870                          * Use that to call ipw_assoc.  On completing the
 871                          * join we are then called again with an AUTH -> RUN
 872                          * transition and we want to do nothing.  This is
 873                          * all totally bogus and needs to be redone.
 874                          */
 875                         if (ostate == IEEE80211_S_SCAN)
 876                                 ipw_assoc(ic, vap);
 877                 }
 878                 break;
 879
 880         case IEEE80211_S_INIT:
 881                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 882                         ipw_disassoc(ic, vap);
 883                 break;
 884
 885         case IEEE80211_S_AUTH:
 886                 /*
 887                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 888                  * takes care of authentication, after the call we'll receive
 889                  * only an assoc response which would otherwise be discared
 890                  * if we are still in AUTH state.
 891                  */
 892                 nstate = IEEE80211_S_ASSOC;
 893                 ipw_assoc(ic, vap);
 894                 break;
 895
 896         case IEEE80211_S_ASSOC:
 897                 /*
 898                  * If we are not transitioning from AUTH then resend the
 899                  * association request.
 900                  */
 901                 if (ostate != IEEE80211_S_AUTH)
 902                         ipw_assoc(ic, vap);
 903                 break;
 904
 905         default:
 906                 break;
 907         }
 908         IEEE80211_LOCK(ic);
 909         return ivp->newstate(vap, nstate, arg);
 910 }
 911
 912 /*
 913  * Read 16 bits at address 'addr' from the serial EEPROM.
 914  */
 915 static uint16_t
 916 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 917 {
 918         uint32_t tmp;
 919         uint16_t val;
 920         int n;
 921
 922         /* clock C once before the first command */
 923         IPW_EEPROM_CTL(sc, 0);
 924         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 925         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 926         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 927
 928         /* write start bit (1) */
 929         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 930         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 931
 932         /* write READ opcode (10) */
 933         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 934         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 935         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 936         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 937
 938         /* write address A7-A0 */
 939         for (n = 7; n >= 0; n--) {
 940                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 941                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 942                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 943                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 944         }
 945
 946         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 947
 948         /* read data Q15-Q0 */
 949         val = 0;
 950         for (n = 15; n >= 0; n--) {
 951                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 952                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 953                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 954                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 955         }
 956
 957         IPW_EEPROM_CTL(sc, 0);
 958
 959         /* clear Chip Select and clock C */
 960         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 961         IPW_EEPROM_CTL(sc, 0);
 962         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 963
 964         return le16toh(val);
 965 }
 966
 967 static uint16_t
 968 ipw_read_chanmask(struct ipw_softc *sc)
 969 {
 970         uint16_t val;
 971
 972         /* set supported .11b channels (read from EEPROM) */
 973         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 974                 val = 0x7ff;    /* default to channels 1-11 */
 975         val <<= 1;
 976
 977         return (val);
 978 }
 979
 980 static void
 981 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 982 {
 983         struct ipw_cmd *cmd;
 984
 985         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 986
 987         cmd = mtod(sbuf->m, struct ipw_cmd *);
 988
 989         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
 990             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
 991             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
 992             le32toh(cmd->status)));
 993
 994         sc->flags &= ~IPW_FLAG_BUSY;
 995         wakeup(sc);
 996 }
 997
 998 static void
 999 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1000 {
1001 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1002         struct ieee80211com *ic = &sc->sc_ic;
1003         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1004         uint32_t state;
1005
1006         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1007
1008         state = le32toh(*mtod(sbuf->m, uint32_t *));
1009
1010         switch (state) {
1011         case IPW_STATE_ASSOCIATED:
1012                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1013                         IEEESTATE(vap), sc->flags));
1014                 /* XXX suppress state change in case the fw auto-associates */
1015                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1016                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1017                                 IEEESTATE(vap), sc->flags));
1018                         break;
1019                 }
1020                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1021                 sc->flags |= IPW_FLAG_ASSOCIATED;
1022                 break;
1023
1024         case IPW_STATE_SCANNING:
1025                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1026                         IEEESTATE(vap), sc->flags));
1027                 /*
1028                  * NB: Check driver state for association on assoc
1029                  * loss as the firmware will immediately start to
1030                  * scan and we would treat it as a beacon miss if
1031                  * we checked the 802.11 layer state.
1032                  */
1033                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1034                         IPW_UNLOCK(sc);
1035                         /* XXX probably need to issue disassoc to fw */
1036                         ieee80211_beacon_miss(ic);
1037                         IPW_LOCK(sc);
1038                 }
1039                 break;
1040
1041         case IPW_STATE_SCAN_COMPLETE:
1042                 /*
1043                  * XXX For some reason scan requests generate scan
1044                  * started + scan done events before any traffic is
1045                  * received (e.g. probe response frames).  We work
1046                  * around this by marking the HACK flag and skipping
1047                  * the first scan complete event.
1048                 */
1049                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1050                             IEEESTATE(vap), sc->flags));
1051                 if (sc->flags & IPW_FLAG_HACK) {
1052                         sc->flags &= ~IPW_FLAG_HACK;
1053                         break;
1054                 }
1055                 if (sc->flags & IPW_FLAG_SCANNING) {
1056                         IPW_UNLOCK(sc);
1057                         ieee80211_scan_done(vap);
1058                         IPW_LOCK(sc);
1059                         sc->flags &= ~IPW_FLAG_SCANNING;
1060                         sc->sc_scan_timer = 0;
1061                 }
1062                 break;
1063
1064         case IPW_STATE_ASSOCIATION_LOST:
1065                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1066                         IEEESTATE(vap), sc->flags));
1067                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1068                 if (vap->iv_state == IEEE80211_S_RUN) {
1069                         IPW_UNLOCK(sc);
1070                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1071                         IPW_LOCK(sc);
1072                 }
1073                 break;
1074
1075         case IPW_STATE_DISABLED:
1076                 /* XXX? is this right? */
1077                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1078                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1079                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1080                         IEEESTATE(vap), sc->flags));
1081                 break;
1082
1083         case IPW_STATE_RADIO_DISABLED:
1084                 device_printf(sc->sc_dev, "radio turned off\n");
1085                 ieee80211_notify_radio(ic, 0);
1086                 ipw_stop_locked(sc);
1087                 /* XXX start polling thread to detect radio on */
1088                 break;
1089
1090         default:
1091                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1092                         __func__, state, IEEESTATE(vap), sc->flags));
1093                 break;
1094         }
1095 #undef IEEESTATE
1096 }
1097
1098 /*
1099  * Set driver state for current channel.
1100  */
1101 static void
1102 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1103 {
1104         struct ieee80211com *ic = &sc->sc_ic;
1105
1106         ic->ic_curchan = chan;
1107         ieee80211_radiotap_chan_change(ic);
1108 }
1109
1110 /*
1111  * XXX: Hack to set the current channel to the value advertised in beacons or
1112  * probe responses. Only used during AP detection.
1113  */
1114 static void
1115 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1116 {
1117         struct ieee80211com *ic = &sc->sc_ic;
1118         struct ieee80211_channel *c;
1119         struct ieee80211_frame *wh;
1120         uint8_t subtype;
1121         uint8_t *frm, *efrm;
1122
1123         wh = mtod(m, struct ieee80211_frame *);
1124
1125         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1126                 return;
1127
1128         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1129
1130         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1131             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1132                 return;
1133
1134         /* XXX use ieee80211_parse_beacon */
1135         frm = (uint8_t *)(wh + 1);
1136         efrm = mtod(m, uint8_t *) + m->m_len;
1137
1138         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1139         while (frm < efrm) {
1140                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1141 #if IEEE80211_CHAN_MAX < 255
1142                 if (frm[2] <= IEEE80211_CHAN_MAX)
1143 #endif
1144                 {
1145                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1146                         c = ieee80211_find_channel(ic,
1147                                 ieee80211_ieee2mhz(frm[2], 0),
1148                                 IEEE80211_CHAN_B);
1149                         if (c == NULL)
1150                                 c = &ic->ic_channels[0];
1151                         ipw_setcurchan(sc, c);
1152                 }
1153
1154                 frm += frm[1] + 2;
1155         }
1156 }
1157
1158 static void
1159 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1160     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1161 {
1162         struct ieee80211com *ic = &sc->sc_ic;
1163         struct mbuf *mnew, *m;
1164         struct ieee80211_node *ni;
1165         bus_addr_t physaddr;
1166         int error;
1167         int8_t rssi, nf;
1168
1169         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1170             status->rssi));
1171
1172         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1173             le32toh(status->len) > MCLBYTES)
1174                 return;
1175
1176         /*
1177          * Try to allocate a new mbuf for this ring element and load it before
1178          * processing the current mbuf. If the ring element cannot be loaded,
1179          * drop the received packet and reuse the old mbuf. In the unlikely
1180          * case that the old mbuf can't be reloaded either, explicitly panic.
1181          */
1182         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1183         if (mnew == NULL) {
1184                 counter_u64_add(ic->ic_ierrors, 1);
1185                 return;
1186         }
1187
1188         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1189         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1190
1191         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1192             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1193         if (error != 0) {
1194                 m_freem(mnew);
1195
1196                 /* try to reload the old mbuf */
1197                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1198                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1199                     &physaddr, 0);
1200                 if (error != 0) {
1201                         /* very unlikely that it will fail... */
1202                         panic("%s: could not load old rx mbuf",
1203                             device_get_name(sc->sc_dev));
1204                 }
1205                 counter_u64_add(ic->ic_ierrors, 1);
1206                 return;
1207         }
1208
1209         /*
1210          * New mbuf successfully loaded, update Rx ring and continue
1211          * processing.
1212          */
1213         m = sbuf->m;
1214         sbuf->m = mnew;
1215         sbd->bd->physaddr = htole32(physaddr);
1216         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1217
1218         rssi = status->rssi + IPW_RSSI_TO_DBM;
1219         nf = -95;
1220         if (ieee80211_radiotap_active(ic)) {
1221                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1222
1223                 tap->wr_flags = 0;
1224                 tap->wr_antsignal = rssi;
1225                 tap->wr_antnoise = nf;
1226         }
1227
1228         if (sc->flags & IPW_FLAG_SCANNING)
1229                 ipw_fix_channel(sc, m);
1230
1231         IPW_UNLOCK(sc);
1232         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1233         if (ni != NULL) {
1234                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1235                 ieee80211_free_node(ni);
1236         } else
1237                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1238         IPW_LOCK(sc);
1239
1240         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1241 }
1242
1243 static void
1244 ipw_rx_intr(struct ipw_softc *sc)
1245 {
1246         struct ipw_status *status;
1247         struct ipw_soft_bd *sbd;
1248         struct ipw_soft_buf *sbuf;
1249         uint32_t r, i;
1250
1251         if (!(sc->flags & IPW_FLAG_FW_INITED))
1252                 return;
1253
1254         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1255
1256         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1257
1258         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1259                 status = &sc->status_list[i];
1260                 sbd = &sc->srbd_list[i];
1261                 sbuf = sbd->priv;
1262
1263                 switch (le16toh(status->code) & 0xf) {
1264                 case IPW_STATUS_CODE_COMMAND:
1265                         ipw_rx_cmd_intr(sc, sbuf);
1266                         break;
1267
1268                 case IPW_STATUS_CODE_NEWSTATE:
1269                         ipw_rx_newstate_intr(sc, sbuf);
1270                         break;
1271
1272                 case IPW_STATUS_CODE_DATA_802_3:
1273                 case IPW_STATUS_CODE_DATA_802_11:
1274                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1275                         break;
1276
1277                 case IPW_STATUS_CODE_NOTIFICATION:
1278                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1279                             le32toh(status->len), status->flags));
1280                         /* XXX maybe drive state machine AUTH->ASSOC? */
1281                         break;
1282
1283                 default:
1284                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1285                             le16toh(status->code));
1286                 }
1287
1288                 /* firmware was killed, stop processing received frames */
1289                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1290                         return;
1291
1292                 sbd->bd->flags = 0;
1293         }
1294
1295         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1296
1297         /* kick the firmware */
1298         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1299         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1300 }
1301
1302 static void
1303 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1304 {
1305         struct ipw_soft_hdr *shdr;
1306         struct ipw_soft_buf *sbuf;
1307
1308         switch (sbd->type) {
1309         case IPW_SBD_TYPE_COMMAND:
1310                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1311                     BUS_DMASYNC_POSTWRITE);
1312                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1313                 break;
1314
1315         case IPW_SBD_TYPE_HEADER:
1316                 shdr = sbd->priv;
1317                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1318                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1319                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1320                 break;
1321
1322         case IPW_SBD_TYPE_DATA:
1323                 sbuf = sbd->priv;
1324                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1325                     BUS_DMASYNC_POSTWRITE);
1326                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1327                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1328
1329                 ieee80211_tx_complete(sbuf->ni, sbuf->m, 0/*XXX*/);
1330
1331                 sc->sc_tx_timer = 0;
1332                 break;
1333         }
1334
1335         sbd->type = IPW_SBD_TYPE_NOASSOC;
1336 }
1337
1338 static void
1339 ipw_tx_intr(struct ipw_softc *sc)
1340 {
1341         struct ipw_soft_bd *sbd;
1342         uint32_t r, i;
1343
1344         if (!(sc->flags & IPW_FLAG_FW_INITED))
1345                 return;
1346
1347         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1348
1349         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1350                 sbd = &sc->stbd_list[i];
1351                 ipw_release_sbd(sc, sbd);
1352                 sc->txfree++;
1353         }
1354
1355         /* remember what the firmware has processed */
1356         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1357
1358         ipw_start(sc);
1359 }
1360
1361 static void
1362 ipw_fatal_error_intr(struct ipw_softc *sc)
1363 {
1364         struct ieee80211com *ic = &sc->sc_ic;
1365         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1366
1367         device_printf(sc->sc_dev, "firmware error\n");
1368         if (vap != NULL) {
1369                 IPW_UNLOCK(sc);
1370                 ieee80211_cancel_scan(vap);
1371                 IPW_LOCK(sc);
1372         }
1373         ieee80211_runtask(ic, &sc->sc_init_task);
1374 }
1375
1376 static void
1377 ipw_intr(void *arg)
1378 {
1379         struct ipw_softc *sc = arg;
1380         uint32_t r;
1381
1382         IPW_LOCK(sc);
1383
1384         r = CSR_READ_4(sc, IPW_CSR_INTR);
1385         if (r == 0 || r == 0xffffffff)
1386                 goto done;
1387
1388         /* disable interrupts */
1389         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1390
1391         /* acknowledge all interrupts */
1392         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1393
1394         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1395                 ipw_fatal_error_intr(sc);
1396                 goto done;
1397         }
1398
1399         if (r & IPW_INTR_FW_INIT_DONE)
1400                 wakeup(sc);
1401
1402         if (r & IPW_INTR_RX_TRANSFER)
1403                 ipw_rx_intr(sc);
1404
1405         if (r & IPW_INTR_TX_TRANSFER)
1406                 ipw_tx_intr(sc);
1407
1408         /* re-enable interrupts */
1409         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1410 done:
1411         IPW_UNLOCK(sc);
1412 }
1413
1414 static void
1415 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1416 {
1417         if (error != 0)
1418                 return;
1419
1420         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1421
1422         *(bus_addr_t *)arg = segs[0].ds_addr;
1423 }
1424
1425 static const char *
1426 ipw_cmdname(int cmd)
1427 {
1428         static const struct {
1429                 int     cmd;
1430                 const char *name;
1431         } cmds[] = {
1432                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1433                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1434                 { IPW_CMD_DISABLE,              "DISABLE" },
1435                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1436                 { IPW_CMD_ENABLE,               "ENABLE" },
1437                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1438                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1439                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1440                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1441                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1442                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1443                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1444                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1445                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1446                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1447                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1448                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1449                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1450                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1451                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1452                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1453                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1454                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1455                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1456                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1457                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1458                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1459
1460         };
1461         static char buf[12];
1462         int i;
1463
1464         for (i = 0; i < nitems(cmds); i++)
1465                 if (cmds[i].cmd == cmd)
1466                         return cmds[i].name;
1467         snprintf(buf, sizeof(buf), "%u", cmd);
1468         return buf;
1469 }
1470
1471 /*
1472  * Send a command to the firmware and wait for the acknowledgement.
1473  */
1474 static int
1475 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1476 {
1477         struct ipw_soft_bd *sbd;
1478         bus_addr_t physaddr;
1479         int error;
1480
1481         IPW_LOCK_ASSERT(sc);
1482
1483         if (sc->flags & IPW_FLAG_BUSY) {
1484                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1485                         __func__, ipw_cmdname(type));
1486                 return EAGAIN;
1487         }
1488         sc->flags |= IPW_FLAG_BUSY;
1489
1490         sbd = &sc->stbd_list[sc->txcur];
1491
1492         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1493             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1494         if (error != 0) {
1495                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1496                 sc->flags &= ~IPW_FLAG_BUSY;
1497                 return error;
1498         }
1499
1500         sc->cmd.type = htole32(type);
1501         sc->cmd.subtype = 0;
1502         sc->cmd.len = htole32(len);
1503         sc->cmd.seq = 0;
1504         memcpy(sc->cmd.data, data, len);
1505
1506         sbd->type = IPW_SBD_TYPE_COMMAND;
1507         sbd->bd->physaddr = htole32(physaddr);
1508         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1509         sbd->bd->nfrag = 1;
1510         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1511             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1512
1513         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1514         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1515
1516 #ifdef IPW_DEBUG
1517         if (ipw_debug >= 4) {
1518                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1519                     0, 0, len);
1520                 /* Print the data buffer in the higher debug level */
1521                 if (ipw_debug >= 9 && len > 0) {
1522                         printf(" data: 0x");
1523                         for (int i = 1; i <= len; i++)
1524                                 printf("%1D", (u_char *)data + len - i, "");
1525                 }
1526                 printf("\n");
1527         }
1528 #endif
1529
1530         /* kick firmware */
1531         sc->txfree--;
1532         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1533         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1534
1535         /* wait at most one second for command to complete */
1536         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1537         if (error != 0) {
1538                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1539                     __func__, ipw_cmdname(type), error);
1540                 sc->flags &= ~IPW_FLAG_BUSY;
1541                 return (error);
1542         }
1543         return (0);
1544 }
1545
1546 static int
1547 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1548 {
1549         struct ieee80211com *ic = &sc->sc_ic;
1550         struct ieee80211vap *vap = ni->ni_vap;
1551         struct ieee80211_frame *wh;
1552         struct ipw_soft_bd *sbd;
1553         struct ipw_soft_hdr *shdr;
1554         struct ipw_soft_buf *sbuf;
1555         struct ieee80211_key *k;
1556         struct mbuf *mnew;
1557         bus_dma_segment_t segs[IPW_MAX_NSEG];
1558         bus_addr_t physaddr;
1559         int nsegs, error, i;
1560
1561         wh = mtod(m0, struct ieee80211_frame *);
1562
1563         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1564                 k = ieee80211_crypto_encap(ni, m0);
1565                 if (k == NULL) {
1566                         m_freem(m0);
1567                         return ENOBUFS;
1568                 }
1569                 /* packet header may have moved, reset our local pointer */
1570                 wh = mtod(m0, struct ieee80211_frame *);
1571         }
1572
1573         if (ieee80211_radiotap_active_vap(vap)) {
1574                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1575
1576                 tap->wt_flags = 0;
1577
1578                 ieee80211_radiotap_tx(vap, m0);
1579         }
1580
1581         shdr = SLIST_FIRST(&sc->free_shdr);
1582         sbuf = SLIST_FIRST(&sc->free_sbuf);
1583         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1584
1585         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1586         shdr->hdr.subtype = 0;
1587         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1588         shdr->hdr.encrypt = 0;
1589         shdr->hdr.keyidx = 0;
1590         shdr->hdr.keysz = 0;
1591         shdr->hdr.fragmentsz = 0;
1592         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1593         if (ic->ic_opmode == IEEE80211_M_STA)
1594                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1595         else
1596                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1597
1598         /* trim IEEE802.11 header */
1599         m_adj(m0, sizeof (struct ieee80211_frame));
1600
1601         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1602             &nsegs, 0);
1603         if (error != 0 && error != EFBIG) {
1604                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1605                     error);
1606                 m_freem(m0);
1607                 return error;
1608         }
1609         if (error != 0) {
1610                 mnew = m_defrag(m0, M_NOWAIT);
1611                 if (mnew == NULL) {
1612                         device_printf(sc->sc_dev,
1613                             "could not defragment mbuf\n");
1614                         m_freem(m0);
1615                         return ENOBUFS;
1616                 }
1617                 m0 = mnew;
1618
1619                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1620                     segs, &nsegs, 0);
1621                 if (error != 0) {
1622                         device_printf(sc->sc_dev,
1623                             "could not map mbuf (error %d)\n", error);
1624                         m_freem(m0);
1625                         return error;
1626                 }
1627         }
1628
1629         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1630             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1631         if (error != 0) {
1632                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1633                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1634                 m_freem(m0);
1635                 return error;
1636         }
1637
1638         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1639         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1640
1641         sbd = &sc->stbd_list[sc->txcur];
1642         sbd->type = IPW_SBD_TYPE_HEADER;
1643         sbd->priv = shdr;
1644         sbd->bd->physaddr = htole32(physaddr);
1645         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1646         sbd->bd->nfrag = 1 + nsegs;
1647         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1648             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1649
1650         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1651             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1652             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1653             ":"));
1654
1655         sc->txfree--;
1656         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1657
1658         sbuf->m = m0;
1659         sbuf->ni = ni;
1660
1661         for (i = 0; i < nsegs; i++) {
1662                 sbd = &sc->stbd_list[sc->txcur];
1663
1664                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1665                 sbd->bd->len = htole32(segs[i].ds_len);
1666                 sbd->bd->nfrag = 0;
1667                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1668                 if (i == nsegs - 1) {
1669                         sbd->type = IPW_SBD_TYPE_DATA;
1670                         sbd->priv = sbuf;
1671                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1672                 } else {
1673                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1674                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1675                 }
1676
1677                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1678
1679                 sc->txfree--;
1680                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1681         }
1682
1683         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1684         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1685         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1686
1687         /* kick firmware */
1688         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1689
1690         return 0;
1691 }
1692
1693 static int
1694 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1695         const struct ieee80211_bpf_params *params)
1696 {
1697         /* no support; just discard */
1698         m_freem(m);
1699         ieee80211_free_node(ni);
1700         return 0;
1701 }
1702
1703 static int
1704 ipw_transmit(struct ieee80211com *ic, struct mbuf *m)
1705 {
1706         struct ipw_softc *sc = ic->ic_softc;
1707         int error;
1708
1709         IPW_LOCK(sc);
1710         if ((sc->flags & IPW_FLAG_RUNNING) == 0) {
1711                 IPW_UNLOCK(sc);
1712                 return (ENXIO);
1713         }
1714         error = mbufq_enqueue(&sc->sc_snd, m);
1715         if (error) {
1716                 IPW_UNLOCK(sc);
1717                 return (error);
1718         }
1719         ipw_start(sc);
1720         IPW_UNLOCK(sc);
1721         return (0);
1722 }
1723
1724 static void
1725 ipw_start(struct ipw_softc *sc)
1726 {
1727         struct ieee80211_node *ni;
1728         struct mbuf *m;
1729
1730         IPW_LOCK_ASSERT(sc);
1731
1732         while (sc->txfree >= 1 + IPW_MAX_NSEG &&
1733             (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1734                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1735                 if (ipw_tx_start(sc, m, ni) != 0) {
1736                         if_inc_counter(ni->ni_vap->iv_ifp,
1737                             IFCOUNTER_OERRORS, 1);
1738                         ieee80211_free_node(ni);
1739                         break;
1740                 }
1741                 /* start watchdog timer */
1742                 sc->sc_tx_timer = 5;
1743         }
1744 }
1745
1746 static void
1747 ipw_watchdog(void *arg)
1748 {
1749         struct ipw_softc *sc = arg;
1750         struct ieee80211com *ic = &sc->sc_ic;
1751
1752         IPW_LOCK_ASSERT(sc);
1753
1754         if (sc->sc_tx_timer > 0) {
1755                 if (--sc->sc_tx_timer == 0) {
1756                         device_printf(sc->sc_dev, "device timeout\n");
1757                         counter_u64_add(ic->ic_oerrors, 1);
1758                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1759                 }
1760         }
1761         if (sc->sc_scan_timer > 0) {
1762                 if (--sc->sc_scan_timer == 0) {
1763                         DPRINTFN(3, ("Scan timeout\n"));
1764                         /* End the scan */
1765                         if (sc->flags & IPW_FLAG_SCANNING) {
1766                                 IPW_UNLOCK(sc);
1767                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1768                                 IPW_LOCK(sc);
1769                                 sc->flags &= ~IPW_FLAG_SCANNING;
1770                         }
1771                 }
1772         }
1773         if (sc->flags & IPW_FLAG_RUNNING)
1774                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1775 }
1776
1777 static void
1778 ipw_parent(struct ieee80211com *ic)
1779 {
1780         struct ipw_softc *sc = ic->ic_softc;
1781         int startall = 0;
1782
1783         IPW_LOCK(sc);
1784         if (ic->ic_nrunning > 0) {
1785                 if (!(sc->flags & IPW_FLAG_RUNNING)) {
1786                         ipw_init_locked(sc);
1787                         startall = 1;
1788                 }
1789         } else if (sc->flags & IPW_FLAG_RUNNING)
1790                 ipw_stop_locked(sc);
1791         IPW_UNLOCK(sc);
1792         if (startall)
1793                 ieee80211_start_all(ic);
1794 }
1795
1796 static void
1797 ipw_stop_master(struct ipw_softc *sc)
1798 {
1799         uint32_t tmp;
1800         int ntries;
1801
1802         /* disable interrupts */
1803         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1804
1805         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1806         for (ntries = 0; ntries < 50; ntries++) {
1807                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1808                         break;
1809                 DELAY(10);
1810         }
1811         if (ntries == 50)
1812                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1813
1814         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1815         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1816
1817         /* Clear all flags except the following */
1818         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1819 }
1820
1821 static int
1822 ipw_reset(struct ipw_softc *sc)
1823 {
1824         uint32_t tmp;
1825         int ntries;
1826
1827         ipw_stop_master(sc);
1828
1829         /* move adapter to D0 state */
1830         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1831         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1832
1833         /* wait for clock stabilization */
1834         for (ntries = 0; ntries < 1000; ntries++) {
1835                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1836                         break;
1837                 DELAY(200);
1838         }
1839         if (ntries == 1000)
1840                 return EIO;
1841
1842         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1843         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1844
1845         DELAY(10);
1846
1847         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1848         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1849
1850         return 0;
1851 }
1852
1853 static int
1854 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1855 {
1856         int ms = hz < 1000 ? 1 : hz/10;
1857         int i, error;
1858
1859         for (i = 0; i < 100; i++) {
1860                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1861                         return 0;
1862                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1863                 if (error == 0 || error != EWOULDBLOCK)
1864                         return 0;
1865         }
1866         DPRINTF(("%s: timeout waiting for %s\n",
1867                 __func__, waitfor ? "disable" : "enable"));
1868         return ETIMEDOUT;
1869 }
1870
1871 static int
1872 ipw_enable(struct ipw_softc *sc)
1873 {
1874         int error;
1875
1876         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1877                 DPRINTF(("Enable adapter\n"));
1878                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1879                 if (error != 0)
1880                         return error;
1881                 error = ipw_waitfordisable(sc, 0);
1882                 if (error != 0)
1883                         return error;
1884                 sc->flags |= IPW_FLAG_ENABLED;
1885         }
1886         return 0;
1887 }
1888
1889 static int
1890 ipw_disable(struct ipw_softc *sc)
1891 {
1892         int error;
1893
1894         if (sc->flags & IPW_FLAG_ENABLED) {
1895                 DPRINTF(("Disable adapter\n"));
1896                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1897                 if (error != 0)
1898                         return error;
1899                 error = ipw_waitfordisable(sc, 1);
1900                 if (error != 0)
1901                         return error;
1902                 sc->flags &= ~IPW_FLAG_ENABLED;
1903         }
1904         return 0;
1905 }
1906
1907 /*
1908  * Upload the microcode to the device.
1909  */
1910 static int
1911 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1912 {
1913         int ntries;
1914
1915         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1916         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1917
1918         MEM_WRITE_2(sc, 0x220000, 0x0703);
1919         MEM_WRITE_2(sc, 0x220000, 0x0707);
1920
1921         MEM_WRITE_1(sc, 0x210014, 0x72);
1922         MEM_WRITE_1(sc, 0x210014, 0x72);
1923
1924         MEM_WRITE_1(sc, 0x210000, 0x40);
1925         MEM_WRITE_1(sc, 0x210000, 0x00);
1926         MEM_WRITE_1(sc, 0x210000, 0x40);
1927
1928         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1929
1930         MEM_WRITE_1(sc, 0x210000, 0x00);
1931         MEM_WRITE_1(sc, 0x210000, 0x00);
1932         MEM_WRITE_1(sc, 0x210000, 0x80);
1933
1934         MEM_WRITE_2(sc, 0x220000, 0x0703);
1935         MEM_WRITE_2(sc, 0x220000, 0x0707);
1936
1937         MEM_WRITE_1(sc, 0x210014, 0x72);
1938         MEM_WRITE_1(sc, 0x210014, 0x72);
1939
1940         MEM_WRITE_1(sc, 0x210000, 0x00);
1941         MEM_WRITE_1(sc, 0x210000, 0x80);
1942
1943         for (ntries = 0; ntries < 10; ntries++) {
1944                 if (MEM_READ_1(sc, 0x210000) & 1)
1945                         break;
1946                 DELAY(10);
1947         }
1948         if (ntries == 10) {
1949                 device_printf(sc->sc_dev,
1950                     "timeout waiting for ucode to initialize\n");
1951                 return EIO;
1952         }
1953
1954         MEM_WRITE_4(sc, 0x3000e0, 0);
1955
1956         return 0;
1957 }
1958
1959 /* set of macros to handle unaligned little endian data in firmware image */
1960 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1961 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1962 static int
1963 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1964 {
1965         const uint8_t *p, *end;
1966         uint32_t tmp, dst;
1967         uint16_t len;
1968         int error;
1969
1970         p = fw;
1971         end = fw + size;
1972         while (p < end) {
1973                 dst = GETLE32(p); p += 4;
1974                 len = GETLE16(p); p += 2;
1975
1976                 ipw_write_mem_1(sc, dst, p, len);
1977                 p += len;
1978         }
1979
1980         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1981             IPW_IO_LED_OFF);
1982
1983         /* enable interrupts */
1984         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1985
1986         /* kick the firmware */
1987         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1988
1989         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1990         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
1991
1992         /* wait at most one second for firmware initialization to complete */
1993         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1994                 device_printf(sc->sc_dev, "timeout waiting for firmware "
1995                     "initialization to complete\n");
1996                 return error;
1997         }
1998
1999         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2000         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2001             IPW_IO_GPIO3_MASK);
2002
2003         return 0;
2004 }
2005
2006 static int
2007 ipw_setwepkeys(struct ipw_softc *sc)
2008 {
2009         struct ieee80211com *ic = &sc->sc_ic;
2010         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2011         struct ipw_wep_key wepkey;
2012         struct ieee80211_key *wk;
2013         int error, i;
2014
2015         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2016                 wk = &vap->iv_nw_keys[i];
2017
2018                 if (wk->wk_cipher == NULL ||
2019                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2020                         continue;
2021
2022                 wepkey.idx = i;
2023                 wepkey.len = wk->wk_keylen;
2024                 memset(wepkey.key, 0, sizeof wepkey.key);
2025                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2026                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2027                     wepkey.len));
2028                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2029                     sizeof wepkey);
2030                 if (error != 0)
2031                         return error;
2032         }
2033         return 0;
2034 }
2035
2036 static int
2037 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2038 {
2039         struct ipw_wpa_ie wpaie;
2040
2041         memset(&wpaie, 0, sizeof(wpaie));
2042         wpaie.len = htole32(ielen);
2043         /* XXX verify length */
2044         memcpy(&wpaie.ie, ie, ielen);
2045         DPRINTF(("Setting WPA IE\n"));
2046         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2047 }
2048
2049 static int
2050 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2051 {
2052         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2053
2054         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2055                 DPRINTF(("Setting mandatory BSSID to null\n"));
2056                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2057         } else {
2058                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2059                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2060                         bssid, IEEE80211_ADDR_LEN);
2061         }
2062 }
2063
2064 static int
2065 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2066 {
2067         if (ssidlen == 0) {
2068                 /*
2069                  * A bug in the firmware breaks the ``don't associate''
2070                  * bit in the scan options command.  To compensate for
2071                  * this install a bogus ssid when no ssid is specified
2072                  * so the firmware won't try to associate.
2073                  */
2074                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2075                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2076                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2077                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2078                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2079                         "\x3c\x3d", IEEE80211_NWID_LEN);
2080         } else {
2081 #ifdef IPW_DEBUG
2082                 if (ipw_debug > 0) {
2083                         printf("Setting ESSID to ");
2084                         ieee80211_print_essid(ssid, ssidlen);
2085                         printf("\n");
2086                 }
2087 #endif
2088                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2089         }
2090 }
2091
2092 static int
2093 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2094 {
2095         struct ipw_scan_options opts;
2096
2097         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2098         opts.channels = htole32(chanmask);
2099         opts.flags = htole32(flags);
2100         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2101 }
2102
2103 static int
2104 ipw_scan(struct ipw_softc *sc)
2105 {
2106         uint32_t params;
2107         int error;
2108
2109         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2110
2111         if (sc->flags & IPW_FLAG_SCANNING)
2112                 return (EBUSY);
2113         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2114
2115         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2116         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2117         if (error != 0)
2118                 goto done;
2119
2120         /*
2121          * Setup null/bogus ssid so firmware doesn't use any previous
2122          * ssid to try and associate.  This is because the ``don't
2123          * associate'' option bit is broken (sigh).
2124          */
2125         error = ipw_setssid(sc, NULL, 0);
2126         if (error != 0)
2127                 goto done;
2128
2129         /*
2130          * NB: the adapter may be disabled on association lost;
2131          *     if so just re-enable it to kick off scanning.
2132          */
2133         DPRINTF(("Starting scan\n"));
2134         sc->sc_scan_timer = 3;
2135         if (sc->flags & IPW_FLAG_ENABLED) {
2136                 params = 0;                             /* XXX? */
2137                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2138                                 &params, sizeof(params));
2139         } else
2140                 error = ipw_enable(sc);
2141 done:
2142         if (error != 0) {
2143                 DPRINTF(("Scan failed\n"));
2144                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2145         }
2146         return (error);
2147 }
2148
2149 static int
2150 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2151 {
2152         struct ieee80211com *ic = &sc->sc_ic;
2153         uint32_t data;
2154         int error;
2155
2156         data = htole32(ieee80211_chan2ieee(ic, chan));
2157         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2158         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2159         if (error == 0)
2160                 ipw_setcurchan(sc, chan);
2161         return error;
2162 }
2163
2164 static void
2165 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2166 {
2167         struct ipw_softc *sc = ic->ic_softc;
2168         struct ieee80211_node *ni = vap->iv_bss;
2169         struct ipw_security security;
2170         uint32_t data;
2171         int error;
2172
2173         IPW_LOCK(sc);
2174         error = ipw_disable(sc);
2175         if (error != 0)
2176                 goto done;
2177
2178         memset(&security, 0, sizeof security);
2179         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2180             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2181         security.ciphers = htole32(IPW_CIPHER_NONE);
2182         DPRINTF(("Setting authmode to %u\n", security.authmode));
2183         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2184             sizeof security);
2185         if (error != 0)
2186                 goto done;
2187
2188         data = htole32(vap->iv_rtsthreshold);
2189         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2190         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2191         if (error != 0)
2192                 goto done;
2193
2194         data = htole32(vap->iv_fragthreshold);
2195         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2196         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2197         if (error != 0)
2198                 goto done;
2199
2200         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2201                 error = ipw_setwepkeys(sc);
2202                 if (error != 0)
2203                         goto done;
2204
2205                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2206                         data = htole32(vap->iv_def_txkey);
2207                         DPRINTF(("Setting wep tx key index to %u\n",
2208                                 le32toh(data)));
2209                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2210                             sizeof data);
2211                         if (error != 0)
2212                                 goto done;
2213                 }
2214         }
2215
2216         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2217         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2218         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2219         if (error != 0)
2220                 goto done;
2221
2222         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2223         if (error != 0)
2224                 goto done;
2225
2226         error = ipw_setbssid(sc, ni->ni_bssid);
2227         if (error != 0)
2228                 goto done;
2229
2230         if (vap->iv_appie_wpa != NULL) {
2231                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2232                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2233                 if (error != 0)
2234                         goto done;
2235         }
2236         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2237                 error = ipw_setchannel(sc, ni->ni_chan);
2238                 if (error != 0)
2239                         goto done;
2240         }
2241
2242         /* lock scan to ap's channel and enable associate */
2243         error = ipw_setscanopts(sc,
2244             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2245         if (error != 0)
2246                 goto done;
2247
2248         error = ipw_enable(sc);         /* finally, enable adapter */
2249         if (error == 0)
2250                 sc->flags |= IPW_FLAG_ASSOCIATING;
2251 done:
2252         IPW_UNLOCK(sc);
2253 }
2254
2255 static void
2256 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2257 {
2258         struct ieee80211_node *ni = vap->iv_bss;
2259         struct ipw_softc *sc = ic->ic_softc;
2260
2261         IPW_LOCK(sc);
2262         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2263         /*
2264          * NB: don't try to do this if ipw_stop_master has
2265          *     shutdown the firmware and disabled interrupts.
2266          */
2267         if (sc->flags & IPW_FLAG_FW_INITED) {
2268                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2269                 /*
2270                  * NB: firmware currently ignores bssid parameter, but
2271                  *     supply it in case this changes (follow linux driver).
2272                  */
2273                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2274                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2275         }
2276         IPW_UNLOCK(sc);
2277 }
2278
2279 /*
2280  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2281  * It is called on firmware panics or on watchdog timeouts.
2282  */
2283 static void
2284 ipw_init_task(void *context, int pending)
2285 {
2286         ipw_init(context);
2287 }
2288
2289 static void
2290 ipw_init(void *priv)
2291 {
2292         struct ipw_softc *sc = priv;
2293         struct ieee80211com *ic = &sc->sc_ic;
2294
2295         IPW_LOCK(sc);
2296         ipw_init_locked(sc);
2297         IPW_UNLOCK(sc);
2298
2299         if (sc->flags & IPW_FLAG_RUNNING)
2300                 ieee80211_start_all(ic);                /* start all vap's */
2301 }
2302
2303 static void
2304 ipw_init_locked(struct ipw_softc *sc)
2305 {
2306         struct ieee80211com *ic = &sc->sc_ic;
2307         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2308         const struct firmware *fp;
2309         const struct ipw_firmware_hdr *hdr;
2310         const char *fw;
2311
2312         IPW_LOCK_ASSERT(sc);
2313
2314         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2315                 ieee80211_state_name[vap->iv_state], sc->flags));
2316
2317         /*
2318          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2319          * when loading the firmware and we don't want to be called during this
2320          * operation.
2321          */
2322         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2323                 return;
2324         sc->flags |= IPW_FLAG_INIT_LOCKED;
2325
2326         ipw_stop_locked(sc);
2327
2328         if (ipw_reset(sc) != 0) {
2329                 device_printf(sc->sc_dev, "could not reset adapter\n");
2330                 goto fail;
2331         }
2332
2333         if (sc->sc_firmware == NULL) {
2334                 device_printf(sc->sc_dev, "no firmware\n");
2335                 goto fail;
2336         }
2337         /* NB: consistency already checked on load */
2338         fp = sc->sc_firmware;
2339         hdr = (const struct ipw_firmware_hdr *)fp->data;
2340
2341         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2342         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2343         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2344                 device_printf(sc->sc_dev, "could not load microcode\n");
2345                 goto fail;
2346         }
2347
2348         ipw_stop_master(sc);
2349
2350         /*
2351          * Setup tx, rx and status rings.
2352          */
2353         sc->txold = IPW_NTBD - 1;
2354         sc->txcur = 0;
2355         sc->txfree = IPW_NTBD - 2;
2356         sc->rxcur = IPW_NRBD - 1;
2357
2358         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2359         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2360         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2361         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2362
2363         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2364         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2365         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2366         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2367
2368         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2369
2370         fw = (const char *)fp->data + sizeof *hdr;
2371         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2372                 device_printf(sc->sc_dev, "could not load firmware\n");
2373                 goto fail;
2374         }
2375
2376         sc->flags |= IPW_FLAG_FW_INITED;
2377
2378         /* retrieve information tables base addresses */
2379         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2380         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2381
2382         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2383
2384         if (ipw_config(sc) != 0) {
2385                 device_printf(sc->sc_dev, "device configuration failed\n");
2386                 goto fail;
2387         }
2388
2389         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2390         sc->flags |= IPW_FLAG_RUNNING;
2391         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2392         return;
2393
2394 fail:
2395         ipw_stop_locked(sc);
2396         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2397 }
2398
2399 static int
2400 ipw_config(struct ipw_softc *sc)
2401 {
2402         struct ieee80211com *ic = &sc->sc_ic;
2403         struct ipw_configuration config;
2404         uint32_t data;
2405         int error;
2406
2407         error = ipw_disable(sc);
2408         if (error != 0)
2409                 return error;
2410
2411         switch (ic->ic_opmode) {
2412         case IEEE80211_M_STA:
2413         case IEEE80211_M_HOSTAP:
2414         case IEEE80211_M_WDS:           /* XXX */
2415                 data = htole32(IPW_MODE_BSS);
2416                 break;
2417         case IEEE80211_M_IBSS:
2418         case IEEE80211_M_AHDEMO:
2419                 data = htole32(IPW_MODE_IBSS);
2420                 break;
2421         case IEEE80211_M_MONITOR:
2422                 data = htole32(IPW_MODE_MONITOR);
2423                 break;
2424         default:
2425                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2426                 return EINVAL;
2427         }
2428         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2429         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2430         if (error != 0)
2431                 return error;
2432
2433         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2434             ic->ic_opmode == IEEE80211_M_MONITOR) {
2435                 error = ipw_setchannel(sc, ic->ic_curchan);
2436                 if (error != 0)
2437                         return error;
2438         }
2439
2440         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2441                 return ipw_enable(sc);
2442
2443         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2444             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2445         if (ic->ic_opmode == IEEE80211_M_IBSS)
2446                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2447         if (ic->ic_promisc > 0)
2448                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2449         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2450         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2451         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2452         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2453         if (error != 0)
2454                 return error;
2455
2456         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2457         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2458         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2459         if (error != 0)
2460                 return error;
2461
2462         /* Use the same rate set */
2463         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2464         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2465         if (error != 0)
2466                 return error;
2467
2468         /* Use the same rate set */
2469         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2470         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2471         if (error != 0)
2472                 return error;
2473
2474         data = htole32(IPW_POWER_MODE_CAM);
2475         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2476         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2477         if (error != 0)
2478                 return error;
2479
2480         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2481                 data = htole32(32); /* default value */
2482                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2483                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2484                     sizeof data);
2485                 if (error != 0)
2486                         return error;
2487         }
2488
2489         return 0;
2490 }
2491
2492 static void
2493 ipw_stop(void *priv)
2494 {
2495         struct ipw_softc *sc = priv;
2496
2497         IPW_LOCK(sc);
2498         ipw_stop_locked(sc);
2499         IPW_UNLOCK(sc);
2500 }
2501
2502 static void
2503 ipw_stop_locked(struct ipw_softc *sc)
2504 {
2505         int i;
2506
2507         IPW_LOCK_ASSERT(sc);
2508
2509         callout_stop(&sc->sc_wdtimer);
2510         ipw_stop_master(sc);
2511
2512         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2513
2514         /*
2515          * Release tx buffers.
2516          */
2517         for (i = 0; i < IPW_NTBD; i++)
2518                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2519
2520         sc->sc_tx_timer = 0;
2521         sc->flags &= ~IPW_FLAG_RUNNING;
2522 }
2523
2524 static int
2525 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2526 {
2527         struct ipw_softc *sc = arg1;
2528         uint32_t i, size, buf[256];
2529
2530         memset(buf, 0, sizeof buf);
2531
2532         if (!(sc->flags & IPW_FLAG_FW_INITED))
2533                 return SYSCTL_OUT(req, buf, sizeof buf);
2534
2535         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2536
2537         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2538         for (i = 1; i < size; i++)
2539                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2540
2541         return SYSCTL_OUT(req, buf, size);
2542 }
2543
2544 static int
2545 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2546 {
2547         struct ipw_softc *sc = arg1;
2548         int val;
2549
2550         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2551                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2552
2553         return SYSCTL_OUT(req, &val, sizeof val);
2554 }
2555
2556 static uint32_t
2557 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2558 {
2559         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2560 }
2561
2562 static void
2563 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2564 {
2565         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2566 }
2567
2568 #if 0
2569 static int
2570 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2571 {
2572         uint32_t addr, info;
2573         uint16_t count, size;
2574         uint32_t total;
2575
2576         /* addr[4] + count[2] + size[2] */
2577         addr = MEM_READ_4(sc, sc->table2_base + off);
2578         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2579
2580         count = info >> 16;
2581         size = info & 0xffff;
2582         total = count * size;
2583
2584         if (total > *len) {
2585                 *len = total;
2586                 return EINVAL;
2587         }
2588
2589         *len = total;
2590         ipw_read_mem_1(sc, addr, buf, total);
2591
2592         return 0;
2593 }
2594
2595 static void
2596 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2597     bus_size_t count)
2598 {
2599         for (; count > 0; offset++, datap++, count--) {
2600                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2601                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2602         }
2603 }
2604 #endif
2605
2606 static void
2607 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2608     bus_size_t count)
2609 {
2610         for (; count > 0; offset++, datap++, count--) {
2611                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2612                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2613         }
2614 }
2615
2616 static void
2617 ipw_scan_start(struct ieee80211com *ic)
2618 {
2619         struct ipw_softc *sc = ic->ic_softc;
2620
2621         IPW_LOCK(sc);
2622         ipw_scan(sc);
2623         IPW_UNLOCK(sc);
2624 }
2625
2626 static void
2627 ipw_getradiocaps(struct ieee80211com *ic,
2628     int maxchans, int *nchans, struct ieee80211_channel chans[])
2629 {
2630         struct ipw_softc *sc = ic->ic_softc;
2631         uint8_t bands[IEEE80211_MODE_BYTES];
2632         int i;
2633
2634         memset(bands, 0, sizeof(bands));
2635         setbit(bands, IEEE80211_MODE_11B);
2636
2637         for (i = 1; i < 16; i++) {
2638                 if (sc->chanmask & (1 << i)) {
2639                         ieee80211_add_channel(chans, maxchans, nchans,
2640                             i, 0, 0, 0, bands);
2641                 }
2642         }
2643
2644 }
2645
2646 static void
2647 ipw_set_channel(struct ieee80211com *ic)
2648 {
2649         struct ipw_softc *sc = ic->ic_softc;
2650
2651         IPW_LOCK(sc);
2652         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2653                 ipw_disable(sc);
2654                 ipw_setchannel(sc, ic->ic_curchan);
2655                 ipw_enable(sc);
2656         }
2657         IPW_UNLOCK(sc);
2658 }
2659
2660 static void
2661 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2662 {
2663         /* NB: all channels are scanned at once */
2664 }
2665
2666 static void
2667 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2668 {
2669         /* NB: don't try to abort scan; wait for firmware to finish */
2670 }
2671
2672 static void
2673 ipw_scan_end(struct ieee80211com *ic)
2674 {
2675         struct ipw_softc *sc = ic->ic_softc;
2676
2677         IPW_LOCK(sc);
2678         sc->flags &= ~IPW_FLAG_SCANNING;
2679         IPW_UNLOCK(sc);
2680 }