sys/dev/netif/acx/if_acx.c

   1 /*
   2  * Copyright (c) 2006 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/dev/netif/acx/if_acx.c,v 1.7 2006/09/05 00:55:39 dillon Exp $
  35  */
  36
  37 /*
  38  * Copyright (c) 2003-2004 wlan.kewl.org Project
  39  * All rights reserved.
  40  *
  41  * $Id: LICENSE,v 1.1.1.1 2004/07/01 12:20:39 darron Exp $
  42  *
  43  * Redistribution and use in source and binary forms, with or without
  44  * modification, are permitted provided that the following conditions
  45  * are met:
  46  *
  47  * 1. Redistributions of source code must retain the above copyright
  48  *    notice, this list of conditions and the following disclaimer.
  49  *
  50  * 2. Redistributions in binary form must reproduce the above copyright
  51  *    notice, this list of conditions and the following disclaimer in the
  52  *    documentation and/or other materials provided with the distribution.
  53  *
  54  * 3. All advertising materials mentioning features or use of this software
  55  *    must display the following acknowledgement:
  56  *
  57  *    This product includes software developed by the wlan.kewl.org Project.
  58  *
  59  * 4. Neither the name of the wlan.kewl.org Project nor the names of its
  60  *    contributors may be used to endorse or promote products derived from
  61  *    this software without specific prior written permission.
  62  *
  63  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  64  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  65  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
  66  * THE wlan.kewl.org Project BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  67  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  68  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  69  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  70  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  71  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  72  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  73  */
  74
  75 #include <sys/param.h>
  76 #include <sys/endian.h>
  77 #include <sys/kernel.h>
  78 #include <sys/bus.h>
  79 #include <sys/malloc.h>
  80 #include <sys/proc.h>
  81 #include <sys/rman.h>
  82 #include <sys/serialize.h>
  83 #include <sys/socket.h>
  84 #include <sys/sockio.h>
  85 #include <sys/sysctl.h>
  86
  87 #include <machine/bus.h>
  88 #include <machine/resource.h>
  89
  90 #include <net/ethernet.h>
  91 #include <net/if.h>
  92 #include <net/bpf.h>
  93 #include <net/if_arp.h>
  94 #include <net/if_dl.h>
  95 #include <net/if_media.h>
  96 #include <net/ifq_var.h>
  97
  98 #include <netproto/802_11/ieee80211_var.h>
  99
 100 #include <bus/pci/pcireg.h>
 101 #include <bus/pci/pcivar.h>
 102 #include <bus/pci/pcidevs.h>
 103
 104 #define ACX_DEBUG
 105
 106 #include "if_acxreg.h"
 107 #include "if_acxvar.h"
 108 #include "acxcmd.h"
 109
 110 #define ACX_ENABLE_TXCHAN(sc, chan)                                     \
 111 do {                                                                    \
 112         if (acx_enable_txchan((sc), (chan)) != 0) {                     \
 113                 if_printf(&(sc)->sc_ic.ic_if,                           \
 114                           "enable TX on channel %d failed\n", (chan));  \
 115         }                                                               \
 116 } while (0)
 117
 118 #define ACX_ENABLE_RXCHAN(sc, chan)                                     \
 119 do {                                                                    \
 120         if (acx_enable_rxchan((sc), (chan)) != 0) {                     \
 121                 if_printf(&(sc)->sc_ic.ic_if,                           \
 122                           "enable RX on channel %d failed\n", (chan));  \
 123         }                                                               \
 124 } while (0)
 125
 126 #define SIOCSLOADFW     _IOW('i', 137, struct ifreq)    /* load firmware */
 127 #define SIOCGRADIO      _IOW('i', 138, struct ifreq)    /* get radio type */
 128 #define SIOCGSTATS      _IOW('i', 139, struct ifreq)    /* get acx stats */
 129 #define SIOCSKILLFW     _IOW('i', 140, struct ifreq)    /* free firmware */
 130 #define SIOCGFWVER      _IOW('i', 141, struct ifreq)    /* get firmware ver */
 131 #define SIOCGHWID       _IOW('i', 142, struct ifreq)    /* get hardware id */
 132
 133 static int      acx_probe(device_t);
 134 static int      acx_attach(device_t);
 135 static int      acx_detach(device_t);
 136 static int      acx_shutdown(device_t);
 137
 138 static void     acx_init(void *);
 139 static int      acx_stop(struct acx_softc *);
 140 static void     acx_init_info_reg(struct acx_softc *);
 141 static int      acx_config(struct acx_softc *);
 142 static int      acx_read_config(struct acx_softc *, struct acx_config *);
 143 static int      acx_write_config(struct acx_softc *, struct acx_config *);
 144 static int      acx_set_crypt_keys(struct acx_softc *);
 145 #ifdef foo
 146 static void     acx_begin_scan(struct acx_softc *);
 147 #endif
 148 static void     acx_next_scan(void *);
 149
 150 static void     acx_start(struct ifnet *);
 151 static void     acx_watchdog(struct ifnet *);
 152
 153 static int      acx_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 154
 155 static void     acx_intr(void *);
 156 static void     acx_disable_intr(struct acx_softc *);
 157 static void     acx_enable_intr(struct acx_softc *);
 158 static void     acx_txeof(struct acx_softc *);
 159 static void     acx_txerr(struct acx_softc *, uint8_t);
 160 static void     acx_rxeof(struct acx_softc *);
 161
 162 static int      acx_dma_alloc(struct acx_softc *);
 163 static void     acx_dma_free(struct acx_softc *);
 164 static int      acx_init_tx_ring(struct acx_softc *);
 165 static int      acx_init_rx_ring(struct acx_softc *);
 166 static int      acx_newbuf(struct acx_softc *, struct acx_rxbuf *, int);
 167 static int      acx_encap(struct acx_softc *, struct acx_txbuf *,
 168                           struct mbuf *, struct ieee80211_node *);
 169
 170 static int      acx_reset(struct acx_softc *);
 171
 172 static int      acx_set_null_tmplt(struct acx_softc *);
 173 static int      acx_set_probe_req_tmplt(struct acx_softc *, const char *, int);
 174 static int      acx_set_probe_resp_tmplt(struct acx_softc *,
 175                                          struct ieee80211_node *);
 176 static int      acx_set_beacon_tmplt(struct acx_softc *,
 177                                      struct ieee80211_node *);
 178
 179 static int      acx_read_eeprom(struct acx_softc *, uint32_t, uint8_t *);
 180 static int      acx_read_phyreg(struct acx_softc *, uint32_t, uint8_t *);
 181
 182 static int      acx_copyin_firmware(struct acx_softc *, struct ifreq *);
 183 static void     acx_free_firmware(struct acx_softc *);
 184 static int      acx_load_firmware(struct acx_softc *, uint32_t,
 185                                   const uint8_t *, int);
 186 static int      acx_load_radio_firmware(struct acx_softc *, const uint8_t *,
 187                                         uint32_t);
 188 static int      acx_load_base_firmware(struct acx_softc *, const uint8_t *,
 189                                        uint32_t);
 190
 191 static int      acx_newstate(struct ieee80211com *, enum ieee80211_state, int);
 192
 193 static int      acx_sysctl_msdu_lifetime(SYSCTL_HANDLER_ARGS);
 194
 195 const struct ieee80211_rateset  acx_rates_11b =
 196         { 4, { 2, 4, 11, 22 } };
 197 const struct ieee80211_rateset  acx_rates_11g =
 198         { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
 199
 200 static int      acx_chanscan_rate = 5;  /* 5/second */
 201 int             acx_beacon_intvl = 100; /* 100 TU */
 202
 203 static const struct acx_device {
 204         uint16_t        vid;
 205         uint16_t        did;
 206         void            (*set_param)(device_t);
 207         const char      *desc;
 208 } acx_devices[] = {
 209         { PCI_VENDOR_TI, PCI_PRODUCT_TI_ACX100A, acx100_set_param,
 210           "Texas Instruments TNETW1100A Wireless Adapter" },
 211         { PCI_VENDOR_TI, PCI_PRODUCT_TI_ACX100B, acx100_set_param,
 212           "Texas Instruments TNETW1100B Wireless Adapter" },
 213         { PCI_VENDOR_TI, PCI_PRODUCT_TI_ACX111, acx111_set_param,
 214           "Texas Instruments TNETW1130 Wireless Adapter" },
 215         { 0, 0, NULL, NULL }
 216 };
 217
 218 static device_method_t acx_methods[] = {
 219         DEVMETHOD(device_probe,         acx_probe),
 220         DEVMETHOD(device_attach,        acx_attach),
 221         DEVMETHOD(device_detach,        acx_detach),
 222         DEVMETHOD(device_shutdown,      acx_shutdown),
 223 #if 0
 224         DEVMETHOD(device_suspend,       acx_suspend),
 225         DEVMETHOD(device_resume,        acx_resume),
 226 #endif
 227         { 0, 0 }
 228 };
 229
 230 static driver_t acx_driver = {
 231         "acx",
 232         acx_methods,
 233         sizeof(struct acx_softc)
 234 };
 235
 236 static devclass_t acx_devclass;
 237
 238 DRIVER_MODULE(acx, pci, acx_driver, acx_devclass, 0, 0);
 239 DRIVER_MODULE(acx, cardbus, acx_driver, acx_devclass, 0, 0);
 240
 241 MODULE_DEPEND(acx, wlan, 1, 1, 1);
 242 MODULE_DEPEND(acx, wlan_ratectl_onoe, 1, 1, 1);
 243 MODULE_DEPEND(acx, wlan_ratectl_amrr, 1, 1, 1);
 244 MODULE_DEPEND(acx, pci, 1, 1, 1);
 245 MODULE_DEPEND(acx, cardbus, 1, 1, 1);
 246
 247 static int
 248 acx_probe(device_t dev)
 249 {
 250         const struct acx_device *a;
 251         uint16_t did, vid;
 252
 253         vid = pci_get_vendor(dev);
 254         did = pci_get_device(dev);
 255         for (a = acx_devices; a->desc != NULL; ++a) {
 256                 if (vid == a->vid && did == a->did) {
 257                         a->set_param(dev);
 258                         device_set_desc(dev, a->desc);
 259                         return 0;
 260                 }
 261         }
 262         return ENXIO;
 263 }
 264
 265 static int
 266 acx_attach(device_t dev)
 267 {
 268         struct acx_softc *sc;
 269         struct ifnet *ifp;
 270         struct ieee80211com *ic;
 271         int i, error;
 272
 273         sc = device_get_softc(dev);
 274         ic = &sc->sc_ic;
 275         ifp = &ic->ic_if;
 276
 277         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 278
 279 #ifndef BURN_BRIDGES
 280         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 281                 uint32_t mem1, mem2, irq;
 282
 283                 mem1 = pci_read_config(dev, sc->chip_mem1_rid, 4);
 284                 mem2 = pci_read_config(dev, sc->chip_mem2_rid, 4);
 285                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 286
 287                 device_printf(dev, "chip is in D%d power mode "
 288                     "-- setting to D0\n", pci_get_powerstate(dev));
 289
 290                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 291
 292                 pci_write_config(dev, sc->chip_mem1_rid, mem1, 4);
 293                 pci_write_config(dev, sc->chip_mem2_rid, mem2, 4);
 294                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 295         }
 296 #endif  /* !BURN_BRIDGE */
 297
 298         /* Enable bus mastering */
 299         pci_enable_busmaster(dev);
 300
 301         /* Allocate IO memory 1 */
 302         sc->sc_mem1_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 303                                                  &sc->chip_mem1_rid,
 304                                                  RF_ACTIVE);
 305         if (sc->sc_mem1_res == NULL) {
 306                 error = ENXIO;
 307                 device_printf(dev, "can't allocate IO mem1\n");
 308                 goto fail;
 309         }
 310         sc->sc_mem1_bt = rman_get_bustag(sc->sc_mem1_res);
 311         sc->sc_mem1_bh = rman_get_bushandle(sc->sc_mem1_res);
 312
 313         /* Allocate IO memory 2 */
 314         sc->sc_mem2_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 315                                                  &sc->chip_mem2_rid,
 316                                                  RF_ACTIVE);
 317         if (sc->sc_mem2_res == NULL) {
 318                 error = ENXIO;
 319                 device_printf(dev, "can't allocate IO mem2\n");
 320                 goto fail;
 321         }
 322         sc->sc_mem2_bt = rman_get_bustag(sc->sc_mem2_res);
 323         sc->sc_mem2_bh = rman_get_bushandle(sc->sc_mem2_res);
 324
 325         /* Allocate irq */
 326         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 327                                                 &sc->sc_irq_rid,
 328                                                 RF_SHAREABLE | RF_ACTIVE);
 329         if (sc->sc_irq_res == NULL) {
 330                 error = ENXIO;
 331                 device_printf(dev, "can't allocate intr\n");
 332                 goto fail;
 333         }
 334
 335         /* Initilize channel scanning timer */
 336         callout_init(&sc->sc_chanscan_timer);
 337
 338         /* Allocate busdma stuffs */
 339         error = acx_dma_alloc(sc);
 340         if (error)
 341                 goto fail;
 342
 343         /* Reset Hardware */
 344         error = acx_reset(sc);
 345         if (error)
 346                 goto fail;
 347
 348         /* Disable interrupts before firmware is loaded */
 349         acx_disable_intr(sc);
 350
 351         /* Get radio type and form factor */
 352 #define EEINFO_RETRY_MAX        50
 353         for (i = 0; i < EEINFO_RETRY_MAX; ++i) {
 354                 uint16_t ee_info;
 355
 356                 ee_info = CSR_READ_2(sc, ACXREG_EEPROM_INFO);
 357                 if (ACX_EEINFO_HAS_RADIO_TYPE(ee_info)) {
 358                         sc->sc_form_factor = ACX_EEINFO_FORM_FACTOR(ee_info);
 359                         sc->sc_radio_type = ACX_EEINFO_RADIO_TYPE(ee_info);
 360                         break;
 361                 }
 362                 DELAY(10000);
 363         }
 364         if (i == EEINFO_RETRY_MAX) {
 365                 error = ENXIO;
 366                 goto fail;
 367         }
 368 #undef EEINFO_RETRY_MAX
 369
 370         DPRINTF((&sc->sc_ic.ic_if, "radio type %02x\n", sc->sc_radio_type));
 371
 372 #ifdef DUMP_EEPROM
 373         for (i = 0; i < 0x40; ++i) {
 374                 uint8_t val;
 375
 376                 error = acx_read_eeprom(sc, i, &val);
 377                 if (i % 10 == 0)
 378                         printf("\n");
 379                 printf("%02x ", val);
 380         }
 381         printf("\n");
 382 #endif  /* DUMP_EEPROM */
 383
 384         /* Get EEPROM version */
 385         error = acx_read_eeprom(sc, ACX_EE_VERSION_OFS, &sc->sc_eeprom_ver);
 386         if (error)
 387                 goto fail;
 388         DPRINTF((&sc->sc_ic.ic_if, "EEPROM version %u\n", sc->sc_eeprom_ver));
 389
 390         ifp->if_softc = sc;
 391         ifp->if_init = acx_init;
 392         ifp->if_ioctl = acx_ioctl;
 393         ifp->if_start = acx_start;
 394         ifp->if_watchdog = acx_watchdog;
 395         ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
 396         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 397         ifq_set_ready(&ifp->if_snd);
 398
 399         /* Set channels */
 400         for (i = 1; i <= 14; ++i) {
 401                 ic->ic_channels[i].ic_freq =
 402                         ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 403                 ic->ic_channels[i].ic_flags = sc->chip_chan_flags;
 404         }
 405
 406         ic->ic_opmode = IEEE80211_M_STA;
 407         ic->ic_state = IEEE80211_S_INIT;
 408         ic->ic_bintval = acx_beacon_intvl;
 409
 410         /*
 411          * NOTE: Don't overwrite ic_caps set by chip specific code
 412          */
 413         ic->ic_caps |= IEEE80211_C_WEP |        /* WEP */
 414                        IEEE80211_C_HOSTAP |     /* Host AP modes */
 415                        IEEE80211_C_IBSS |       /* IBSS modes */
 416                        IEEE80211_C_SHPREAMBLE;  /* Short preamble */
 417
 418         /* Get station id */
 419         for (i = 0; i < IEEE80211_ADDR_LEN; ++i) {
 420                 error = acx_read_eeprom(sc, sc->chip_ee_eaddr_ofs - i,
 421                                         &ic->ic_myaddr[i]);
 422         }
 423
 424         ieee80211_ifattach(ic);
 425
 426         /* Override newstate */
 427         sc->sc_newstate = ic->ic_newstate;
 428         ic->ic_newstate = acx_newstate;
 429
 430         ieee80211_media_init(ic, ieee80211_media_change, ieee80211_media_status);
 431
 432         sc->sc_long_retry_limit = 4;
 433         sc->sc_msdu_lifetime = 4096;
 434
 435         sysctl_ctx_init(&sc->sc_sysctl_ctx);
 436         sc->sc_sysctl_tree = SYSCTL_ADD_NODE(&sc->sc_sysctl_ctx,
 437                                              SYSCTL_STATIC_CHILDREN(_hw),
 438                                              OID_AUTO,
 439                                              device_get_nameunit(dev),
 440                                              CTLFLAG_RD, 0, "");
 441         if (sc->sc_sysctl_tree == NULL) {
 442                 device_printf(dev, "can't add sysctl node\n");
 443                 error = ENXIO;
 444                 goto fail1;
 445         }
 446
 447         SYSCTL_ADD_PROC(&sc->sc_sysctl_ctx,
 448                         SYSCTL_CHILDREN(sc->sc_sysctl_tree),
 449                         OID_AUTO, "msdu_lifetime",
 450                         CTLTYPE_INT | CTLFLAG_RW,
 451                         sc, 0, acx_sysctl_msdu_lifetime, "I",
 452                         "MSDU life time");
 453
 454         error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, acx_intr, sc,
 455                                &sc->sc_irq_handle, ifp->if_serializer);
 456         if (error) {
 457                 device_printf(dev, "can't set up interrupt\n");
 458                 goto fail1;
 459         }
 460
 461         if (bootverbose)
 462                 ieee80211_announce(ic);
 463
 464         return 0;
 465 fail1:
 466         ieee80211_ifdetach(ic);
 467 fail:
 468         acx_detach(dev);
 469         return error;
 470 }
 471
 472 static int
 473 acx_detach(device_t dev)
 474 {
 475         struct acx_softc *sc = device_get_softc(dev);
 476
 477         if (device_is_attached(dev)) {
 478                 struct ieee80211com *ic = &sc->sc_ic;
 479                 struct ifnet *ifp = &ic->ic_if;
 480
 481                 lwkt_serialize_enter(ifp->if_serializer);
 482
 483                 acx_stop(sc);
 484                 acx_free_firmware(sc);
 485                 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 486
 487                 lwkt_serialize_exit(ifp->if_serializer);
 488
 489                 ieee80211_ifdetach(ic);
 490         }
 491
 492         if (sc->sc_sysctl_tree != NULL)
 493                 sysctl_ctx_free(&sc->sc_sysctl_ctx);
 494
 495         if (sc->sc_irq_res != NULL) {
 496                 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
 497                                      sc->sc_irq_res);
 498         }
 499         if (sc->sc_mem1_res != NULL) {
 500                 bus_release_resource(dev, SYS_RES_MEMORY, sc->chip_mem1_rid,
 501                                      sc->sc_mem1_res);
 502         }
 503         if (sc->sc_mem2_res != NULL) {
 504                 bus_release_resource(dev, SYS_RES_MEMORY, sc->chip_mem2_rid,
 505                                      sc->sc_mem2_res);
 506         }
 507
 508         acx_dma_free(sc);
 509         return 0;
 510 }
 511
 512 static int
 513 acx_shutdown(device_t dev)
 514 {
 515         struct acx_softc *sc = device_get_softc(dev);
 516
 517         lwkt_serialize_enter(sc->sc_ic.ic_if.if_serializer);
 518         acx_stop(sc);
 519         lwkt_serialize_exit(sc->sc_ic.ic_if.if_serializer);
 520         return 0;
 521 }
 522
 523 static void
 524 acx_init(void *arg)
 525 {
 526         struct acx_softc *sc = arg;
 527         struct ifnet *ifp = &sc->sc_ic.ic_if;
 528         struct acx_firmware *fw = &sc->sc_firmware;
 529         int error;
 530
 531         error = acx_stop(sc);
 532         if (error)
 533                 return;
 534
 535         if (fw->base_fw == NULL) {
 536                 error = EINVAL;
 537                 if_printf(ifp, "base firmware is not loaded yet\n");
 538                 return;
 539         }
 540
 541         error = acx_init_tx_ring(sc);
 542         if (error) {
 543                 if_printf(ifp, "can't initialize TX ring\n");
 544                 goto back;
 545         }
 546
 547         error = acx_init_rx_ring(sc);
 548         if (error) {
 549                 if_printf(ifp, "can't initialize RX ring\n");
 550                 goto back;
 551         }
 552
 553         error = acx_load_base_firmware(sc, fw->base_fw, fw->base_fw_len);
 554         if (error)
 555                 goto back;
 556
 557         /*
 558          * Initialize command and information registers
 559          * NOTE: This should be done after base firmware is loaded
 560          */
 561         acx_init_cmd_reg(sc);
 562         acx_init_info_reg(sc);
 563
 564         sc->sc_flags |= ACX_FLAG_FW_LOADED;
 565
 566 #if 0
 567         if (sc->chip_post_basefw != NULL) {
 568                 error = sc->chip_post_basefw(sc);
 569                 if (error)
 570                         goto back;
 571         }
 572 #endif
 573
 574         if (fw->radio_fw != NULL) {
 575                 error = acx_load_radio_firmware(sc, fw->radio_fw,
 576                                                 fw->radio_fw_len);
 577                 if (error)
 578                         goto back;
 579         }
 580
 581         error = sc->chip_init(sc);
 582         if (error)
 583                 goto back;
 584
 585         /* Get and set device various configuration */
 586         error = acx_config(sc);
 587         if (error)
 588                 goto back;
 589
 590         /* Setup crypto stuffs */
 591         if (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) {
 592                 error = acx_set_crypt_keys(sc);
 593                 if (error)
 594                         goto back;
 595                 sc->sc_ic.ic_flags &= ~IEEE80211_F_DROPUNENC;
 596         }
 597
 598         /* Turn on power led */
 599         CSR_CLRB_2(sc, ACXREG_GPIO_OUT, sc->chip_gpio_pled);
 600
 601         acx_enable_intr(sc);
 602
 603         ifp->if_flags |= IFF_RUNNING;
 604         ifp->if_flags &= ~IFF_OACTIVE;
 605
 606         /* Begin background scanning */
 607 #ifdef foo
 608         acx_begin_scan(sc);
 609 #else
 610         ieee80211_new_state(&sc->sc_ic, IEEE80211_S_SCAN, -1);
 611 #endif
 612
 613 back:
 614         if (error)
 615                 acx_stop(sc);
 616 }
 617
 618 static void
 619 acx_init_info_reg(struct acx_softc *sc)
 620 {
 621         sc->sc_info = CSR_READ_4(sc, ACXREG_INFO_REG_OFFSET);
 622         sc->sc_info_param = sc->sc_info + ACX_INFO_REG_SIZE;
 623 }
 624
 625 static int
 626 acx_set_crypt_keys(struct acx_softc *sc)
 627 {
 628         struct ieee80211com *ic = &sc->sc_ic;
 629         struct acx_conf_wep_txkey wep_txkey;
 630         int i, error, got_wk = 0;
 631
 632         for (i = 0; i < IEEE80211_WEP_NKID; ++i) {
 633                 struct ieee80211_key *wk = &ic->ic_nw_keys[i];
 634
 635                 if (wk->wk_keylen == 0)
 636                         continue;
 637
 638                 if (sc->chip_hw_crypt) {
 639                         error = sc->chip_set_wepkey(sc, wk, i);
 640                         if (error)
 641                                 return error;
 642                         got_wk = 1;
 643                 } else if (wk->wk_flags & IEEE80211_KEY_XMIT) {
 644                         wk->wk_flags |= IEEE80211_KEY_SWCRYPT;
 645                 }
 646         }
 647
 648         if (!got_wk || sc->chip_hw_crypt ||
 649             ic->ic_def_txkey == IEEE80211_KEYIX_NONE)
 650                 return 0;
 651
 652         /* Set current WEP key index */
 653         wep_txkey.wep_txkey = ic->ic_def_txkey;
 654         if (acx_set_wep_txkey_conf(sc, &wep_txkey) != 0) {
 655                 if_printf(&ic->ic_if, "set WEP txkey failed\n");
 656                 return ENXIO;
 657         }
 658         return 0;
 659 }
 660
 661 #ifdef foo
 662 static void
 663 acx_begin_scan(struct acx_softc *sc)
 664 {
 665         struct ieee80211com *ic = &sc->sc_ic;
 666         uint8_t chan;
 667
 668         ieee80211_begin_scan(ic, 1);
 669
 670         chan = ieee80211_chan2ieee(ic, ic->ic_bss->ni_chan);
 671
 672         ACX_ENABLE_TXCHAN(sc, chan);
 673         ACX_ENABLE_RXCHAN(sc, chan);
 674
 675         /* Start background scanning */
 676         callout_reset(&sc->sc_chanscan_timer, hz / acx_chanscan_rate,
 677                       acx_next_scan, sc);
 678 }
 679 #endif
 680
 681 static void
 682 acx_next_scan(void *arg)
 683 {
 684         struct acx_softc *sc = arg;
 685         struct ieee80211com *ic = &sc->sc_ic;
 686         struct ifnet *ifp = &ic->ic_if;
 687
 688         lwkt_serialize_enter(ifp->if_serializer);
 689
 690         if (ic->ic_state == IEEE80211_S_SCAN) {
 691 #if 0
 692                 uint8_t chan;
 693 #endif
 694
 695                 ieee80211_next_scan(ic);
 696
 697 #if 0
 698                 chan = ieee80211_chan2ieee(ic, ic->ic_bss->ni_chan);
 699
 700                 ACX_ENABLE_TXCHAN(sc, chan);
 701                 ACX_ENABLE_RXCHAN(sc, chan);
 702
 703                 callout_reset(&sc->sc_chanscan_timer, hz / acx_chanscan_rate,
 704                               acx_next_scan, sc);
 705 #endif
 706         }
 707
 708         lwkt_serialize_exit(ifp->if_serializer);
 709 }
 710
 711 static int
 712 acx_stop(struct acx_softc *sc)
 713 {
 714         struct ieee80211com *ic = &sc->sc_ic;
 715         struct ifnet *ifp = &ic->ic_if;
 716         struct acx_buf_data *bd = &sc->sc_buf_data;
 717         struct acx_ring_data *rd = &sc->sc_ring_data;
 718         int i, error;
 719
 720         ASSERT_SERIALIZED(ifp->if_serializer);
 721
 722         sc->sc_firmware_ver = 0;
 723         sc->sc_hardware_id = 0;
 724
 725         /* Reset hardware */
 726         error = acx_reset(sc);
 727         if (error)
 728                 return error;
 729
 730         /* Firmware no longer functions after hardware reset */
 731         sc->sc_flags &= ~ACX_FLAG_FW_LOADED;
 732
 733         acx_disable_intr(sc);
 734
 735         /* Stop backgroud scanning */
 736         callout_stop(&sc->sc_chanscan_timer);
 737
 738         /* Turn off power led */
 739         CSR_SETB_2(sc, ACXREG_GPIO_OUT, sc->chip_gpio_pled);
 740
 741         /* Free TX mbuf */
 742         for (i = 0; i < ACX_TX_DESC_CNT; ++i) {
 743                 struct acx_txbuf *buf;
 744
 745                 buf = &bd->tx_buf[i];
 746
 747                 if (buf->tb_mbuf != NULL) {
 748                         bus_dmamap_unload(bd->mbuf_dma_tag,
 749                                           buf->tb_mbuf_dmamap);
 750                         m_freem(buf->tb_mbuf);
 751                         buf->tb_mbuf = NULL;
 752                 }
 753
 754                 if (buf->tb_node != NULL)
 755                         ieee80211_free_node(buf->tb_node);
 756                 buf->tb_node = NULL;
 757         }
 758
 759         /* Clear TX host descriptors */
 760         bzero(rd->tx_ring, ACX_TX_RING_SIZE);
 761
 762         /* Free RX mbuf */
 763         for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
 764                 if (bd->rx_buf[i].rb_mbuf != NULL) {
 765                         bus_dmamap_unload(bd->mbuf_dma_tag,
 766                                           bd->rx_buf[i].rb_mbuf_dmamap);
 767                         m_freem(bd->rx_buf[i].rb_mbuf);
 768                         bd->rx_buf[i].rb_mbuf = NULL;
 769                 }
 770         }
 771
 772         /* Clear RX host descriptors */
 773         bzero(rd->rx_ring, ACX_RX_RING_SIZE);
 774
 775         ifp->if_timer = 0;
 776         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 777         ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1);
 778
 779         return 0;
 780 }
 781
 782 static int
 783 acx_config(struct acx_softc *sc)
 784 {
 785         struct acx_config conf;
 786         int error;
 787
 788         error = acx_read_config(sc, &conf);
 789         if (error)
 790                 return error;
 791
 792         error = acx_write_config(sc, &conf);
 793         if (error)
 794                 return error;
 795
 796         if (acx_set_probe_req_tmplt(sc, "", 0) != 0) {
 797                 if_printf(&sc->sc_ic.ic_if, "can't set probe req template "
 798                           "(empty ssid)\n");
 799                 return ENXIO;
 800         }
 801
 802         /* XXX for PM?? */
 803         if (acx_set_null_tmplt(sc) != 0) {
 804                 if_printf(&sc->sc_ic.ic_if, "can't set null data template\n");
 805                 return ENXIO;
 806         }
 807         return 0;
 808 }
 809
 810 static int
 811 acx_read_config(struct acx_softc *sc, struct acx_config *conf)
 812 {
 813         struct acx_conf_eaddr addr;
 814         struct acx_conf_regdom reg_dom;
 815         struct acx_conf_antenna ant;
 816         struct acx_conf_fwrev fw_rev;
 817         uint32_t fw_rev_no;
 818         uint8_t sen;
 819         int i, error;
 820
 821         /* Get station id */
 822         if (acx_get_eaddr_conf(sc, &addr) != 0) {
 823                 if_printf(&sc->sc_ic.ic_if, "can't get station id\n");
 824                 return ENXIO;
 825         }
 826
 827         /*
 828          * Get and print station id in case that EEPROM station id's
 829          * offset is not correct
 830          */
 831         for (i = 0; i < IEEE80211_ADDR_LEN; ++i)
 832                 conf->eaddr[IEEE80211_ADDR_LEN - 1 - i] = addr.eaddr[i];
 833         if_printf(&sc->sc_ic.ic_if, "MAC address (from firmware): %6D\n",
 834                   conf->eaddr, ":");
 835
 836         /* Get region domain */
 837         if (acx_get_regdom_conf(sc, &reg_dom) != 0) {
 838                 if_printf(&sc->sc_ic.ic_if, "can't get region domain\n");
 839                 return ENXIO;
 840         }
 841         conf->regdom = reg_dom.regdom;
 842         DPRINTF((&sc->sc_ic.ic_if, "regdom %02x\n", reg_dom.regdom));
 843
 844         /* Get antenna */
 845         if (acx_get_antenna_conf(sc, &ant) != 0) {
 846                 if_printf(&sc->sc_ic.ic_if, "can't get antenna\n");
 847                 return ENXIO;
 848         }
 849         conf->antenna = ant.antenna;
 850         DPRINTF((&sc->sc_ic.ic_if, "antenna %02x\n", ant.antenna));
 851
 852         /* Get sensitivity XXX not used */
 853         if (sc->sc_radio_type == ACX_RADIO_TYPE_MAXIM ||
 854             sc->sc_radio_type == ACX_RADIO_TYPE_RFMD ||
 855             sc->sc_radio_type == ACX_RADIO_TYPE_RALINK) {
 856                 error = acx_read_phyreg(sc, ACXRV_PHYREG_SENSITIVITY, &sen);
 857                 if (error) {
 858                         if_printf(&sc->sc_ic.ic_if, "can't get sensitivity\n");
 859                         return error;
 860                 }
 861         } else {
 862                 sen = 0;
 863         }
 864         DPRINTF((&sc->sc_ic.ic_if, "sensitivity %02x\n", sen));
 865
 866         /* Get firmware revision */
 867         if (acx_get_fwrev_conf(sc, &fw_rev) != 0) {
 868                 if_printf(&sc->sc_ic.ic_if, "can't get firmware revision\n");
 869                 return ENXIO;
 870         }
 871
 872         if (strncmp(fw_rev.fw_rev, "Rev ", 4) != 0) {
 873                 if_printf(&sc->sc_ic.ic_if, "strange revision string -- %s\n",
 874                           fw_rev.fw_rev);
 875                 fw_rev_no = 0x01090407;
 876         } else {
 877                 char *s, *endp;
 878
 879                 /*
 880                  *  01234
 881                  * "Rev xx.xx.xx.xx"
 882                  *      ^ Start from here
 883                  */
 884                 s = &fw_rev.fw_rev[4];
 885                 fw_rev_no = 0;
 886                 for (i = 0; i < 4; ++i) {
 887                         uint8_t val;
 888
 889                         val = strtoul(s, &endp, 16);
 890                         fw_rev_no |= val << ((3 - i) * 8);
 891
 892                         if (*endp == '\0')
 893                                 break;
 894                         else
 895                                 s = ++endp;
 896                 }
 897         }
 898         sc->sc_firmware_ver = fw_rev_no;
 899         sc->sc_hardware_id = le32toh(fw_rev.hw_id);
 900         DPRINTF((&sc->sc_ic.ic_if, "fw rev %08x, hw id %08x\n",
 901                  sc->sc_firmware_ver, sc->sc_hardware_id));
 902
 903         if (sc->chip_read_config != NULL) {
 904                 error = sc->chip_read_config(sc, conf);
 905                 if (error)
 906                         return error;
 907         }
 908         return 0;
 909 }
 910
 911 static int
 912 acx_write_config(struct acx_softc *sc, struct acx_config *conf)
 913 {
 914         struct acx_conf_nretry_short sretry;
 915         struct acx_conf_nretry_long lretry;
 916         struct acx_conf_msdu_lifetime msdu_lifetime;
 917         struct acx_conf_rate_fallback rate_fb;
 918         struct acx_conf_antenna ant;
 919         struct acx_conf_regdom reg_dom;
 920         struct acx_conf_rxopt rx_opt;
 921         int error;
 922
 923         /* Set number of long/short retry */
 924         KKASSERT(sc->chip_short_retry_limit > 0);
 925         sretry.nretry = sc->chip_short_retry_limit;
 926         if (acx_set_nretry_short_conf(sc, &sretry) != 0) {
 927                 if_printf(&sc->sc_ic.ic_if, "can't set short retry limit\n");
 928                 return ENXIO;
 929         }
 930
 931         lretry.nretry = sc->sc_long_retry_limit;
 932         if (acx_set_nretry_long_conf(sc, &lretry) != 0) {
 933                 if_printf(&sc->sc_ic.ic_if, "can't set long retry limit\n");
 934                 return ENXIO;
 935         }
 936
 937         /* Set MSDU lifetime */
 938         msdu_lifetime.lifetime = htole32(sc->sc_msdu_lifetime);
 939         if (acx_set_msdu_lifetime_conf(sc, &msdu_lifetime) != 0) {
 940                 if_printf(&sc->sc_ic.ic_if, "can't set MSDU lifetime\n");
 941                 return ENXIO;
 942         }
 943
 944         /* Enable rate fallback */
 945         rate_fb.ratefb_enable = 1;
 946         if (acx_set_rate_fallback_conf(sc, &rate_fb) != 0) {
 947                 if_printf(&sc->sc_ic.ic_if, "can't enable rate fallback\n");
 948                 return ENXIO;
 949         }
 950
 951         /* Set antenna */
 952         ant.antenna = conf->antenna;
 953         if (acx_set_antenna_conf(sc, &ant) != 0) {
 954                 if_printf(&sc->sc_ic.ic_if, "can't set antenna\n");
 955                 return ENXIO;
 956         }
 957
 958         /* Set region domain */
 959         reg_dom.regdom = conf->regdom;
 960         if (acx_set_regdom_conf(sc, &reg_dom) != 0) {
 961                 if_printf(&sc->sc_ic.ic_if, "can't set region domain\n");
 962                 return ENXIO;
 963         }
 964
 965         if (sc->chip_write_config != NULL) {
 966                 error = sc->chip_write_config(sc, conf);
 967                 if (error)
 968                         return error;
 969         }
 970
 971         /* What we want to receive and how to receive */
 972         /* XXX may not belong here, acx_init() */
 973         rx_opt.opt1 = RXOPT1_FILT_FDEST | RXOPT1_INCL_RXBUF_HDR;
 974         rx_opt.opt2 = RXOPT2_RECV_ASSOC_REQ |
 975                       RXOPT2_RECV_AUTH |
 976                       RXOPT2_RECV_BEACON |
 977                       RXOPT2_RECV_CF |
 978                       RXOPT2_RECV_CTRL |
 979                       RXOPT2_RECV_DATA |
 980                       RXOPT2_RECV_MGMT |
 981                       RXOPT2_RECV_PROBE_REQ |
 982                       RXOPT2_RECV_PROBE_RESP |
 983                       RXOPT2_RECV_OTHER;
 984         if (acx_set_rxopt_conf(sc, &rx_opt) != 0) {
 985                 if_printf(&sc->sc_ic.ic_if, "can't set RX option\n");
 986                 return ENXIO;
 987         }
 988         return 0;
 989 }
 990
 991 static int
 992 acx_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
 993 {
 994         struct acx_softc *sc = ifp->if_softc;
 995         struct ifreq *req;
 996         int error;
 997
 998         error = 0;
 999         req = (struct ifreq *)data;
1000
1001         switch (cmd) {
1002         case SIOCSLOADFW:
1003                 error = suser_cred(cr, NULL_CRED_OKAY);
1004                 if (error)
1005                         break;
1006
1007                 error = acx_copyin_firmware(sc, req);
1008                 break;
1009         case SIOCSKILLFW:
1010                 error = suser_cred(cr, NULL_CRED_OKAY);
1011                 if (error)
1012                         break;
1013                 acx_free_firmware(sc);
1014                 break;
1015         case SIOCGRADIO:
1016                 error = copyout(&sc->sc_radio_type, req->ifr_data,
1017                                 sizeof(sc->sc_radio_type));
1018                 break;
1019         case SIOCGFWVER:
1020                 error = copyout(&sc->sc_firmware_ver, req->ifr_data,
1021                                 sizeof(sc->sc_firmware_ver));
1022                 break;
1023         case SIOCGHWID:
1024                 error = copyout(&sc->sc_hardware_id, req->ifr_data,
1025                                 sizeof(sc->sc_hardware_id));
1026                 break;
1027         case SIOCGSTATS:
1028                 error = copyout(&sc->sc_stats, req->ifr_data,
1029                                 sizeof(sc->sc_stats));
1030                 break;
1031         case SIOCSIFFLAGS:
1032                 if (ifp->if_flags & IFF_UP) {
1033                         if ((ifp->if_flags & IFF_RUNNING) == 0)
1034                                 acx_init(sc);
1035                 } else {
1036                         if (ifp->if_flags & IFF_RUNNING)
1037                                 acx_stop(sc);
1038                 }
1039                 break;
1040         case SIOCADDMULTI:
1041         case SIOCDELMULTI:
1042                 /* TODO */
1043                 break;
1044         default:
1045                 error = ieee80211_ioctl(&sc->sc_ic, cmd, data, cr);
1046                 break;
1047         }
1048
1049         if (error == ENETRESET) {
1050                 if ((ifp->if_flags & (IFF_RUNNING | IFF_UP)) ==
1051                     (IFF_RUNNING | IFF_UP))
1052                         acx_init(sc);
1053                 error = 0;
1054         }
1055         return error;
1056 }
1057
1058 static void
1059 acx_start(struct ifnet *ifp)
1060 {
1061         struct acx_softc *sc = ifp->if_softc;
1062         struct ieee80211com *ic = &sc->sc_ic;
1063         struct acx_buf_data *bd = &sc->sc_buf_data;
1064         struct acx_txbuf *buf;
1065         int trans, idx;
1066
1067         ASSERT_SERIALIZED(ifp->if_serializer);
1068
1069         if ((sc->sc_flags & ACX_FLAG_FW_LOADED) == 0 ||
1070             (ifp->if_flags & IFF_RUNNING) == 0 ||
1071             (ifp->if_flags & IFF_OACTIVE))
1072                 return;
1073
1074         /*
1075          * NOTE:
1076          * We can't start from a random position that TX descriptor
1077          * is free, since hardware will be confused by that.
1078          * We have to follow the order of the TX ring.
1079          */
1080         idx = bd->tx_free_start;
1081         trans = 0;
1082         for (buf = &bd->tx_buf[idx]; buf->tb_mbuf == NULL;
1083              buf = &bd->tx_buf[idx]) {
1084                 struct ieee80211_frame *f;
1085                 struct ieee80211_node *ni = NULL;
1086                 struct mbuf *m;
1087                 int mgmt_pkt = 0;
1088
1089                 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1090                         IF_DEQUEUE(&ic->ic_mgtq, m);
1091
1092                         ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1093                         m->m_pkthdr.rcvif = NULL;
1094
1095                         mgmt_pkt = 1;
1096                 } else if (!ifq_is_empty(&ifp->if_snd)) {
1097                         struct ether_header *eh;
1098
1099                         if (ic->ic_state != IEEE80211_S_RUN) {
1100                                 if_printf(ifp, "data packet dropped due to "
1101                                           "not RUN.  Current state %d\n",
1102                                           ic->ic_state);
1103                                 break;
1104                         }
1105
1106                         m = ifq_dequeue(&ifp->if_snd, NULL);
1107                         if (m == NULL)
1108                                 break;
1109
1110                         if (m->m_len < sizeof(struct ether_header)) {
1111                                 m = m_pullup(m, sizeof(struct ether_header));
1112                                 if (m == NULL) {
1113                                         ifp->if_oerrors++;
1114                                         continue;
1115                                 }
1116                         }
1117                         eh = mtod(m, struct ether_header *);
1118
1119                         ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1120                         if (ni == NULL) {
1121                                 m_freem(m);
1122                                 ifp->if_oerrors++;
1123                                 continue;
1124                         }
1125
1126                         /* TODO power save */
1127
1128                         m = ieee80211_encap(ic, m, ni);
1129                         if (m == NULL) {
1130                                 ieee80211_free_node(ni);
1131                                 ifp->if_oerrors++;
1132                                 continue;
1133                         }
1134
1135                         BPF_MTAP(ifp, m);
1136                 } else {
1137                         break;
1138                 }
1139
1140                 f = mtod(m, struct ieee80211_frame *);
1141                 if ((f->i_fc[1] & IEEE80211_FC1_WEP) && !sc->chip_hw_crypt) {
1142                         KASSERT(ni != NULL, ("TX node is NULL (WEP)\n"));
1143                         if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1144                                 ieee80211_free_node(ni);
1145                                 m_freem(m);
1146                                 ifp->if_oerrors++;
1147                                 continue;
1148                         }
1149                 }
1150
1151                 if (ic->ic_rawbpf != NULL)
1152                         bpf_mtap(ic->ic_rawbpf, m);
1153
1154                 /*
1155                  * Since mgmt data are transmitted at fixed rate
1156                  * they will not be used to do rate control.
1157                  */
1158                 if (mgmt_pkt && ni != NULL) {
1159                         ieee80211_free_node(ni);
1160                         ni = NULL;
1161                 }
1162
1163                 if (acx_encap(sc, buf, m, ni) != 0) {
1164                         /*
1165                          * NOTE: `m' will be freed in acx_encap()
1166                          * if we reach here.
1167                          */
1168                         if (ni != NULL)
1169                                 ieee80211_free_node(ni);
1170                         ifp->if_oerrors++;
1171                         continue;
1172                 }
1173
1174                 /*
1175                  * NOTE:
1176                  * 1) `m' should not be touched after acx_encap()
1177                  * 2) `node' will be used to do TX rate control during
1178                  *    acx_txeof(), so it is not freed here.  acx_txeof()
1179                  *    will free it for us
1180                  */
1181
1182                 trans = 1;
1183                 bd->tx_used_count++;
1184                 idx = (idx + 1) % ACX_TX_DESC_CNT;
1185         }
1186         bd->tx_free_start = idx;
1187
1188         if (bd->tx_used_count == ACX_TX_DESC_CNT)
1189                 ifp->if_flags |= IFF_OACTIVE;
1190
1191         if (trans && ifp->if_timer == 0)
1192                 ifp->if_timer = 5;
1193 }
1194
1195 static void
1196 acx_watchdog(struct ifnet *ifp)
1197 {
1198         if_printf(ifp, "watchdog timeout\n");
1199         acx_txeof(ifp->if_softc);
1200         /* TODO */
1201 }
1202
1203 static void
1204 acx_intr(void *arg)
1205 {
1206         struct acx_softc *sc = arg;
1207         uint16_t intr_status;
1208
1209         if ((sc->sc_flags & ACX_FLAG_FW_LOADED) == 0)
1210                 return;
1211
1212         intr_status = CSR_READ_2(sc, ACXREG_INTR_STATUS_CLR);
1213         if (intr_status == ACXRV_INTR_ALL) {
1214                 /* not our interrupt */
1215                 return;
1216         }
1217
1218         intr_status &= sc->chip_intr_enable;
1219         if (intr_status == 0) {
1220                 /* not interrupts we care about */
1221                 return;
1222         }
1223
1224         /* Acknowledge all interrupts */
1225         CSR_WRITE_2(sc, ACXREG_INTR_ACK, ACXRV_INTR_ALL);
1226
1227         if (intr_status & ACXRV_INTR_TX_FINI)
1228                 acx_txeof(sc);
1229
1230         if (intr_status & ACXRV_INTR_RX_FINI)
1231                 acx_rxeof(sc);
1232 }
1233
1234 static void
1235 acx_disable_intr(struct acx_softc *sc)
1236 {
1237         CSR_WRITE_2(sc, ACXREG_INTR_MASK, sc->chip_intr_disable);
1238         CSR_WRITE_2(sc, ACXREG_EVENT_MASK, 0);
1239 }
1240
1241 static void
1242 acx_enable_intr(struct acx_softc *sc)
1243 {
1244         /* Mask out interrupts that are not in the enable set */
1245         CSR_WRITE_2(sc, ACXREG_INTR_MASK, ~sc->chip_intr_enable);
1246         CSR_WRITE_2(sc, ACXREG_EVENT_MASK, ACXRV_EVENT_DISABLE);
1247 }
1248
1249 static void
1250 acx_txeof(struct acx_softc *sc)
1251 {
1252         struct acx_buf_data *bd;
1253         struct acx_txbuf *buf;
1254         struct ifnet *ifp;
1255         int idx;
1256
1257         ifp = &sc->sc_ic.ic_if;
1258         ASSERT_SERIALIZED(ifp->if_serializer);
1259
1260         bd = &sc->sc_buf_data;
1261         idx = bd->tx_used_start;
1262         for (buf = &bd->tx_buf[idx]; buf->tb_mbuf != NULL;
1263              buf = &bd->tx_buf[idx]) {
1264                 uint8_t ctrl, error;
1265                 int frame_len;
1266
1267                 ctrl = FW_TXDESC_GETFIELD_1(sc, buf, f_tx_ctrl);
1268                 if ((ctrl & (DESC_CTRL_HOSTOWN | DESC_CTRL_ACXDONE)) !=
1269                     (DESC_CTRL_HOSTOWN | DESC_CTRL_ACXDONE))
1270                         break;
1271
1272                 bus_dmamap_unload(bd->mbuf_dma_tag, buf->tb_mbuf_dmamap);
1273                 frame_len = buf->tb_mbuf->m_pkthdr.len;
1274                 m_freem(buf->tb_mbuf);
1275                 buf->tb_mbuf = NULL;
1276
1277                 error = FW_TXDESC_GETFIELD_1(sc, buf, f_tx_error);
1278                 if (error) {
1279                         acx_txerr(sc, error);
1280                         ifp->if_oerrors++;
1281                 } else {
1282                         ifp->if_opackets++;
1283                 }
1284
1285                 if (buf->tb_node != NULL) {
1286                         sc->chip_tx_complete(sc, buf, frame_len, error);
1287                         ieee80211_free_node(buf->tb_node);
1288                         buf->tb_node = NULL;
1289                 }
1290
1291                 FW_TXDESC_SETFIELD_1(sc, buf, f_tx_ctrl, DESC_CTRL_HOSTOWN);
1292
1293                 bd->tx_used_count--;
1294
1295                 idx = (idx + 1) % ACX_TX_DESC_CNT;
1296         }
1297         bd->tx_used_start = idx;
1298
1299         ifp->if_timer = bd->tx_used_count == 0 ? 0 : 5;
1300
1301         if (bd->tx_used_count != ACX_TX_DESC_CNT) {
1302                 ifp->if_flags &= ~IFF_OACTIVE;
1303                 acx_start(ifp);
1304         }
1305 }
1306
1307 static void
1308 acx_txerr(struct acx_softc *sc, uint8_t err)
1309 {
1310         struct ifnet *ifp = &sc->sc_ic.ic_if;
1311         struct acx_stats *stats = &sc->sc_stats;
1312
1313         if (err == DESC_ERR_EXCESSIVE_RETRY) {
1314                 /*
1315                  * This a common error (see comment below),
1316                  * so print it using DPRINTF()
1317                  */
1318                 DPRINTF((ifp, "TX failed -- excessive retry\n"));
1319         } else {
1320                 if_printf(ifp, "TX failed -- ");
1321         }
1322
1323         /*
1324          * Although `err' looks like bitmask, it never
1325          * has multiple bits set.
1326          */
1327         switch (err) {
1328 #if 0
1329         case DESC_ERR_OTHER_FRAG:
1330                 /* XXX what's this */
1331                 printf("error in other fragment\n");
1332                 stats->err_oth_frag++;
1333                 break;
1334 #endif
1335         case DESC_ERR_ABORT:
1336                 printf("aborted\n");
1337                 stats->err_abort++;
1338                 break;
1339         case DESC_ERR_PARAM:
1340                 printf("wrong paramters in descriptor\n");
1341                 stats->err_param++;
1342                 break;
1343         case DESC_ERR_NO_WEPKEY:
1344                 printf("WEP key missing\n");
1345                 stats->err_no_wepkey++;
1346                 break;
1347         case DESC_ERR_MSDU_TIMEOUT:
1348                 printf("MSDU life timeout\n");
1349                 stats->err_msdu_timeout++;
1350                 break;
1351         case DESC_ERR_EXCESSIVE_RETRY:
1352                 /*
1353                  * Possible causes:
1354                  * 1) Distance is too long
1355                  * 2) Transmit failed (e.g. no MAC level ACK)
1356                  * 3) Chip overheated (this should be rare)
1357                  */
1358                 stats->err_ex_retry++;
1359                 break;
1360         case DESC_ERR_BUF_OVERFLOW:
1361                 printf("buffer overflow\n");
1362                 stats->err_buf_oflow++;
1363                 break;
1364         case DESC_ERR_DMA:
1365                 printf("DMA error\n");
1366                 stats->err_dma++;
1367                 break;
1368         default:
1369                 printf("unknown error %d\n", err);
1370                 stats->err_unkn++;
1371                 break;
1372         }
1373 }
1374
1375 static void
1376 acx_rxeof(struct acx_softc *sc)
1377 {
1378         struct ieee80211com *ic = &sc->sc_ic;
1379         struct acx_ring_data *rd = &sc->sc_ring_data;
1380         struct acx_buf_data *bd = &sc->sc_buf_data;
1381         struct ifnet *ifp = &ic->ic_if;
1382         int idx, ready;
1383
1384         ASSERT_SERIALIZED(ic->ic_if.if_serializer);
1385
1386         bus_dmamap_sync(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
1387                         BUS_DMASYNC_POSTREAD);
1388
1389         /*
1390          * Locate first "ready" rx buffer,
1391          * start from last stopped position
1392          */
1393         idx = bd->rx_scan_start;
1394         ready = 0;
1395         do {
1396                 struct acx_rxbuf *buf;
1397
1398                 buf = &bd->rx_buf[idx];
1399                 if ((buf->rb_desc->h_ctrl & htole16(DESC_CTRL_HOSTOWN)) &&
1400                     (buf->rb_desc->h_status & htole32(DESC_STATUS_FULL))) {
1401                         ready = 1;
1402                         break;
1403                 }
1404                 idx = (idx + 1) % ACX_RX_DESC_CNT;
1405         } while (idx != bd->rx_scan_start);
1406
1407         if (!ready)
1408                 return;
1409
1410         /*
1411          * NOTE: don't mess up `idx' here, it will
1412          * be used in the following code
1413          */
1414
1415         do {
1416                 struct acx_rxbuf_hdr *head;
1417                 struct acx_rxbuf *buf;
1418                 struct mbuf *m;
1419                 uint32_t desc_status;
1420                 uint16_t desc_ctrl;
1421                 int len, error;
1422
1423                 buf = &bd->rx_buf[idx];
1424
1425                 desc_ctrl = le16toh(buf->rb_desc->h_ctrl);
1426                 desc_status = le32toh(buf->rb_desc->h_status);
1427                 if (!(desc_ctrl & DESC_CTRL_HOSTOWN) ||
1428                     !(desc_status & DESC_STATUS_FULL))
1429                         break;
1430
1431                 bus_dmamap_sync(bd->mbuf_dma_tag, buf->rb_mbuf_dmamap,
1432                                 BUS_DMASYNC_POSTREAD);
1433
1434                 m = buf->rb_mbuf;
1435
1436                 error = acx_newbuf(sc, buf, 0);
1437                 if (error) {
1438                         ifp->if_ierrors++;
1439                         goto next;
1440                 }
1441
1442                 head = mtod(m, struct acx_rxbuf_hdr *);
1443
1444                 len = le16toh(head->rbh_len) & ACX_RXBUF_LEN_MASK;
1445                 if (len >= sizeof(struct ieee80211_frame_min) &&
1446                     len < MCLBYTES) {
1447                         struct ieee80211_frame *f;
1448                         struct ieee80211_node *ni;
1449
1450                         m_adj(m, sizeof(struct acx_rxbuf_hdr) +
1451                                  sc->chip_rxbuf_exhdr);
1452                         f = mtod(m, struct ieee80211_frame *);
1453
1454                         if ((f->i_fc[1] & IEEE80211_FC1_WEP) &&
1455                             sc->chip_hw_crypt) {
1456                                 /* Short circuit software WEP */
1457                                 f->i_fc[1] &= ~IEEE80211_FC1_WEP;
1458
1459                                 /* Do chip specific RX buffer processing */
1460                                 if (sc->chip_proc_wep_rxbuf != NULL) {
1461                                         sc->chip_proc_wep_rxbuf(sc, m, &len);
1462                                         f = mtod(m, struct ieee80211_frame *);
1463                                 }
1464                         }
1465
1466                         ni = ieee80211_find_rxnode(ic,
1467                                 (struct ieee80211_frame_min *)f);
1468
1469                         m->m_len = m->m_pkthdr.len = len;
1470                         m->m_pkthdr.rcvif = &ic->ic_if;
1471
1472                         ieee80211_input(ic, m, ni, head->rbh_level,
1473                                         le32toh(head->rbh_time));
1474
1475                         ieee80211_free_node(ni);
1476                         ifp->if_ipackets++;
1477                 } else {
1478                         m_freem(m);
1479                         ifp->if_ierrors++;
1480                 }
1481
1482 next:
1483                 buf->rb_desc->h_ctrl = htole16(desc_ctrl & ~DESC_CTRL_HOSTOWN);
1484                 buf->rb_desc->h_status = 0;
1485                 bus_dmamap_sync(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
1486                                 BUS_DMASYNC_PREWRITE);
1487
1488                 idx = (idx + 1) % ACX_RX_DESC_CNT;
1489         } while (idx != bd->rx_scan_start);
1490
1491         /*
1492          * Record the position so that next
1493          * time we can start from it
1494          */
1495         bd->rx_scan_start = idx;
1496 }
1497
1498 static int
1499 acx_reset(struct acx_softc *sc)
1500 {
1501         uint16_t reg;
1502
1503         /* Halt ECPU */
1504         CSR_SETB_2(sc, ACXREG_ECPU_CTRL, ACXRV_ECPU_HALT);
1505
1506         /* Software reset */
1507         reg = CSR_READ_2(sc, ACXREG_SOFT_RESET);
1508         CSR_WRITE_2(sc, ACXREG_SOFT_RESET, reg | ACXRV_SOFT_RESET);
1509         DELAY(100);
1510         CSR_WRITE_2(sc, ACXREG_SOFT_RESET, reg);
1511
1512         /* Initialize EEPROM */
1513         CSR_SETB_2(sc, ACXREG_EEPROM_INIT, ACXRV_EEPROM_INIT);
1514         DELAY(50000);
1515
1516         /* Test whether ECPU is stopped */
1517         reg = CSR_READ_2(sc, ACXREG_ECPU_CTRL);
1518         if (!(reg & ACXRV_ECPU_HALT)) {
1519                 if_printf(&sc->sc_ic.ic_if, "can't halt ECPU\n");
1520                 return ENXIO;
1521         }
1522         return 0;
1523 }
1524
1525 static int
1526 acx_read_eeprom(struct acx_softc *sc, uint32_t offset, uint8_t *val)
1527 {
1528         int i;
1529
1530         CSR_WRITE_4(sc, ACXREG_EEPROM_CONF, 0);
1531         CSR_WRITE_4(sc, ACXREG_EEPROM_ADDR, offset);
1532         CSR_WRITE_4(sc, ACXREG_EEPROM_CTRL, ACXRV_EEPROM_READ);
1533
1534 #define EE_READ_RETRY_MAX       100
1535         for (i = 0; i < EE_READ_RETRY_MAX; ++i) {
1536                 if (CSR_READ_2(sc, ACXREG_EEPROM_CTRL) == 0)
1537                         break;
1538                 DELAY(10000);
1539         }
1540         if (i == EE_READ_RETRY_MAX) {
1541                 if_printf(&sc->sc_ic.ic_if, "can't read EEPROM offset %x "
1542                           "(timeout)\n", offset);
1543                 return ETIMEDOUT;
1544         }
1545 #undef EE_READ_RETRY_MAX
1546
1547         *val = CSR_READ_1(sc, ACXREG_EEPROM_DATA);
1548         return 0;
1549 }
1550
1551 static int
1552 acx_read_phyreg(struct acx_softc *sc, uint32_t reg, uint8_t *val)
1553 {
1554         int i;
1555
1556         CSR_WRITE_4(sc, ACXREG_PHY_ADDR, reg);
1557         CSR_WRITE_4(sc, ACXREG_PHY_CTRL, ACXRV_PHY_READ);
1558
1559 #define PHY_READ_RETRY_MAX      100
1560         for (i = 0; i < PHY_READ_RETRY_MAX; ++i) {
1561                 if (CSR_READ_4(sc, ACXREG_PHY_CTRL) == 0)
1562                         break;
1563                 DELAY(10000);
1564         }
1565         if (i == PHY_READ_RETRY_MAX) {
1566                 if_printf(&sc->sc_ic.ic_if, "can't read phy reg %x (timeout)\n",
1567                           reg);
1568                 return ETIMEDOUT;
1569         }
1570 #undef PHY_READ_RETRY_MAX
1571
1572         *val = CSR_READ_1(sc, ACXREG_PHY_DATA);
1573         return 0;
1574 }
1575
1576 void
1577 acx_write_phyreg(struct acx_softc *sc, uint32_t reg, uint8_t val)
1578 {
1579         CSR_WRITE_4(sc, ACXREG_PHY_DATA, val);
1580         CSR_WRITE_4(sc, ACXREG_PHY_ADDR, reg);
1581         CSR_WRITE_4(sc, ACXREG_PHY_CTRL, ACXRV_PHY_WRITE);
1582 }
1583
1584 static int
1585 acx_copyin_firmware(struct acx_softc *sc, struct ifreq *req)
1586 {
1587         struct acx_firmware ufw, *kfw;
1588         uint8_t *base_fw, *radio_fw;
1589         int error;
1590
1591         kfw = &sc->sc_firmware;
1592         base_fw = NULL;
1593         radio_fw = NULL;
1594
1595         error = copyin(req->ifr_data, &ufw, sizeof(ufw));
1596         if (error)
1597                 return error;
1598
1599         /*
1600          * For combined base firmware, there is no radio firmware.
1601          * But base firmware must exist.
1602          */
1603         if (ufw.base_fw_len <= 0 || ufw.radio_fw_len < 0)
1604                 return EINVAL;
1605
1606         base_fw = kmalloc(ufw.base_fw_len, M_DEVBUF, M_INTWAIT);
1607         error = copyin(ufw.base_fw, base_fw, ufw.base_fw_len);
1608         if (error)
1609                 goto fail;
1610
1611         if (ufw.radio_fw_len > 0) {
1612                 radio_fw = kmalloc(ufw.radio_fw_len, M_DEVBUF, M_INTWAIT);
1613                 error = copyin(ufw.radio_fw, radio_fw, ufw.radio_fw_len);
1614                 if (error)
1615                         goto fail;
1616         }
1617
1618         kfw->base_fw_len = ufw.base_fw_len;
1619         if (kfw->base_fw != NULL)
1620                 kfree(kfw->base_fw, M_DEVBUF);
1621         kfw->base_fw = base_fw;
1622
1623         kfw->radio_fw_len = ufw.radio_fw_len;
1624         if (kfw->radio_fw != NULL)
1625                 kfree(kfw->radio_fw, M_DEVBUF);
1626         kfw->radio_fw = radio_fw;
1627
1628         return 0;
1629 fail:
1630         if (base_fw != NULL)
1631                 kfree(base_fw, M_DEVBUF);
1632         if (radio_fw != NULL)
1633                 kfree(radio_fw, M_DEVBUF);
1634         return error;
1635 }
1636
1637 static void
1638 acx_free_firmware(struct acx_softc *sc)
1639 {
1640         struct acx_firmware *fw = &sc->sc_firmware;
1641
1642         if (fw->base_fw != NULL) {
1643                 kfree(fw->base_fw, M_DEVBUF);
1644                 fw->base_fw = NULL;
1645                 fw->base_fw_len = 0;
1646         }
1647         if (fw->radio_fw != NULL) {
1648                 kfree(fw->radio_fw, M_DEVBUF);
1649                 fw->radio_fw = NULL;
1650                 fw->radio_fw_len = 0;
1651         }
1652 }
1653
1654 static int
1655 acx_load_base_firmware(struct acx_softc *sc, const uint8_t *base_fw,
1656                        uint32_t base_fw_len)
1657 {
1658         int i, error;
1659
1660         /* Load base firmware */
1661         error = acx_load_firmware(sc, 0, base_fw, base_fw_len);
1662         if (error) {
1663                 if_printf(&sc->sc_ic.ic_if, "can't load base firmware\n");
1664                 return error;
1665         }
1666         DPRINTF((&sc->sc_ic.ic_if, "base firmware loaded\n"));
1667
1668         /* Start ECPU */
1669         CSR_WRITE_2(sc, ACXREG_ECPU_CTRL, ACXRV_ECPU_START);
1670
1671         /* Wait for ECPU to be up */
1672         for (i = 0; i < 500; ++i) {
1673                 uint16_t reg;
1674
1675                 reg = CSR_READ_2(sc, ACXREG_INTR_STATUS);
1676                 if (reg & ACXRV_INTR_FCS_THRESH) {
1677                         CSR_WRITE_2(sc, ACXREG_INTR_ACK, ACXRV_INTR_FCS_THRESH);
1678                         return 0;
1679                 }
1680                 DELAY(10000);
1681         }
1682
1683         if_printf(&sc->sc_ic.ic_if, "can't initialize ECPU (timeout)\n");
1684         return ENXIO;
1685 }
1686
1687 static int
1688 acx_load_radio_firmware(struct acx_softc *sc, const uint8_t *radio_fw,
1689                         uint32_t radio_fw_len)
1690 {
1691         struct acx_conf_mmap mem_map;
1692         uint32_t radio_fw_ofs;
1693         int error;
1694
1695         /*
1696          * Get the position, where base firmware is loaded, so that
1697          * radio firmware can be loaded after it.
1698          */
1699         if (acx_get_mmap_conf(sc, &mem_map) != 0)
1700                 return ENXIO;
1701         radio_fw_ofs = le32toh(mem_map.code_end);
1702
1703         /* Put ECPU into sleeping state, before loading radio firmware */
1704         if (acx_sleep(sc) != 0)
1705                 return ENXIO;
1706
1707         /* Load radio firmware */
1708         error = acx_load_firmware(sc, radio_fw_ofs, radio_fw, radio_fw_len);
1709         if (error) {
1710                 if_printf(&sc->sc_ic.ic_if, "can't load radio firmware\n");
1711                 return ENXIO;
1712         }
1713         DPRINTF((&sc->sc_ic.ic_if, "radio firmware loaded\n"));
1714
1715         /* Wake up sleeping ECPU, after radio firmware is loaded */
1716         if (acx_wakeup(sc) != 0)
1717                 return ENXIO;
1718
1719         /* Initialize radio */
1720         if (acx_init_radio(sc, radio_fw_ofs, radio_fw_len) != 0)
1721                 return ENXIO;
1722
1723         /* Verify radio firmware's loading position */
1724         if (acx_get_mmap_conf(sc, &mem_map) != 0)
1725                 return ENXIO;
1726         if (le32toh(mem_map.code_end) != radio_fw_ofs + radio_fw_len) {
1727                 if_printf(&sc->sc_ic.ic_if, "loaded radio firmware position "
1728                           "mismatch\n");
1729                 return ENXIO;
1730         }
1731
1732         DPRINTF((&sc->sc_ic.ic_if, "radio firmware initialized\n"));
1733         return 0;
1734 }
1735
1736 static int
1737 acx_load_firmware(struct acx_softc *sc, uint32_t offset, const uint8_t *data,
1738                   int data_len)
1739 {
1740         const uint32_t *fw;
1741         int i, fw_len;
1742
1743         fw = (const uint32_t *)data;
1744         fw_len = data_len / sizeof(uint32_t);
1745
1746         /*
1747          * LOADFW_AUTO_INC only works with some older firmware:
1748          * 1) acx100's firmware
1749          * 2) acx111's firmware whose rev is 0x00010011
1750          */
1751
1752         /* Load firmware */
1753         CSR_WRITE_4(sc, ACXREG_FWMEM_START, ACXRV_FWMEM_START_OP);
1754 #ifndef LOADFW_AUTO_INC
1755         CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, 0);
1756 #else
1757         CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, ACXRV_FWMEM_ADDR_AUTOINC);
1758         CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset);
1759 #endif
1760
1761         for (i = 0; i < fw_len; ++i) {
1762 #ifndef LOADFW_AUTO_INC
1763                 CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset + (i * 4));
1764 #endif
1765                 CSR_WRITE_4(sc, ACXREG_FWMEM_DATA, be32toh(fw[i]));
1766         }
1767
1768         /* Verify firmware */
1769         CSR_WRITE_4(sc, ACXREG_FWMEM_START, ACXRV_FWMEM_START_OP);
1770 #ifndef LOADFW_AUTO_INC
1771         CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, 0);
1772 #else
1773         CSR_WRITE_4(sc, ACXREG_FWMEM_CTRL, ACXRV_FWMEM_ADDR_AUTOINC);
1774         CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset);
1775 #endif
1776
1777         for (i = 0; i < fw_len; ++i) {
1778                 uint32_t val;
1779
1780 #ifndef LOADFW_AUTO_INC
1781                 CSR_WRITE_4(sc, ACXREG_FWMEM_ADDR, offset + (i * 4));
1782 #endif
1783                 val = CSR_READ_4(sc, ACXREG_FWMEM_DATA);
1784                 if (be32toh(fw[i]) != val) {
1785                         if_printf(&sc->sc_ic.ic_if, "fireware mismatch "
1786                                   "fw %08x  loaded %08x\n", fw[i], val);
1787                         return ENXIO;
1788                 }
1789         }
1790         return 0;
1791 }
1792
1793 static int
1794 acx_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1795 {
1796         struct acx_softc *sc = ic->ic_if.if_softc;
1797         int error = 0, mode = 0;
1798
1799         ASSERT_SERIALIZED(ic->ic_if.if_serializer);
1800
1801         ieee80211_ratectl_newstate(ic, nstate);
1802
1803         switch (nstate) {
1804         case IEEE80211_S_SCAN:
1805                 if (ic->ic_state != IEEE80211_S_INIT) {
1806                         uint8_t chan;
1807
1808                         chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
1809                         ACX_ENABLE_TXCHAN(sc, chan);
1810                         ACX_ENABLE_RXCHAN(sc, chan);
1811
1812                         callout_reset(&sc->sc_chanscan_timer,
1813                                       hz / acx_chanscan_rate,
1814                                       acx_next_scan, sc);
1815                 }
1816                 break;
1817         case IEEE80211_S_AUTH:
1818                 if (ic->ic_opmode == IEEE80211_M_STA) {
1819                         struct ieee80211_node *ni;
1820 #ifdef ACX_DEBUG
1821                         int i;
1822 #endif
1823
1824                         ni = ic->ic_bss;
1825
1826                         if (acx_join_bss(sc, ACX_MODE_STA, ni) != 0) {
1827                                 if_printf(&ic->ic_if, "join BSS failed\n");
1828                                 error = 1;
1829                                 goto back;
1830                         }
1831
1832                         DPRINTF((&ic->ic_if, "join BSS\n"));
1833                         if (ic->ic_state == IEEE80211_S_ASSOC) {
1834                                 DPRINTF((&ic->ic_if,
1835                                          "change from assoc to run\n"));
1836                                 ic->ic_state = IEEE80211_S_RUN;
1837                         }
1838
1839 #ifdef ACX_DEBUG
1840                         if_printf(&ic->ic_if, "AP rates: ");
1841                         for (i = 0; i < ni->ni_rates.rs_nrates; ++i)
1842                                 printf("%d ", ni->ni_rates.rs_rates[i]);
1843                         ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
1844                         printf(" %6D\n", ni->ni_bssid, ":");
1845 #endif
1846                 }
1847                 break;
1848         case IEEE80211_S_RUN:
1849                 if (ic->ic_opmode == IEEE80211_M_IBSS ||
1850                     ic->ic_opmode == IEEE80211_M_HOSTAP) {
1851                         struct ieee80211_node *ni;
1852                         uint8_t chan;
1853
1854                         ni = ic->ic_bss;
1855                         chan = ieee80211_chan2ieee(ic, ni->ni_chan);
1856
1857                         error = 1;
1858
1859                         if (acx_enable_txchan(sc, chan) != 0) {
1860                                 if_printf(&ic->ic_if,
1861                                           "enable TX on channel %d failed\n",
1862                                           chan);
1863                                 goto back;
1864                         }
1865
1866                         if (acx_enable_rxchan(sc, chan) != 0) {
1867                                 if_printf(&ic->ic_if,
1868                                           "enable RX on channel %d failed\n",
1869                                           chan);
1870                                 goto back;
1871                         }
1872
1873                         if (acx_set_beacon_tmplt(sc, ni) != 0) {
1874                                 if_printf(&ic->ic_if,
1875                                           "set bescon template failed\n");
1876                                 goto back;
1877                         }
1878
1879                         if (acx_set_probe_resp_tmplt(sc, ni) != 0) {
1880                                 if_printf(&ic->ic_if, "set probe response "
1881                                           "template failed\n");
1882                                 goto back;
1883                         }
1884
1885                         if (ic->ic_opmode == IEEE80211_M_IBSS)
1886                                 mode = ACX_MODE_ADHOC;
1887                         else
1888                                 mode = ACX_MODE_AP;
1889
1890                         if (acx_join_bss(sc, mode, ni) != 0) {
1891                                 if_printf(&ic->ic_if, "acx_join_ibss failed\n");
1892                                 goto back;
1893                         }
1894
1895                         DPRINTF((&ic->ic_if, "join IBSS\n"));
1896                         error = 0;
1897                 }
1898                 break;
1899         default:
1900                 break;
1901         }
1902
1903 back:
1904         if (error) {
1905                 /* XXX */
1906                 nstate = IEEE80211_S_INIT;
1907                 arg = -1;
1908         }
1909         return sc->sc_newstate(ic, nstate, arg);
1910 }
1911
1912 int
1913 acx_init_tmplt_ordered(struct acx_softc *sc)
1914 {
1915 #define INIT_TMPLT(name)                        \
1916 do {                                            \
1917         if (acx_init_##name##_tmplt(sc) != 0)   \
1918                 return 1;                       \
1919 } while (0)
1920
1921         /*
1922          * NOTE:
1923          * Order of templates initialization:
1924          * 1) Probe request
1925          * 2) NULL data
1926          * 3) Beacon
1927          * 4) TIM
1928          * 5) Probe response
1929          * Above order is critical to get a correct memory map.
1930          */
1931         INIT_TMPLT(probe_req);
1932         INIT_TMPLT(null_data);
1933         INIT_TMPLT(beacon);
1934         INIT_TMPLT(tim);
1935         INIT_TMPLT(probe_resp);
1936
1937 #undef CALL_SET_TMPLT
1938         return 0;
1939 }
1940
1941 static void
1942 acx_ring_dma_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
1943 {
1944         *((uint32_t *)arg) = seg->ds_addr;
1945 }
1946
1947 static int
1948 acx_dma_alloc(struct acx_softc *sc)
1949 {
1950         struct acx_ring_data *rd = &sc->sc_ring_data;
1951         struct acx_buf_data *bd = &sc->sc_buf_data;
1952         int i, error;
1953
1954         /* Allocate DMA stuffs for RX descriptors  */
1955         error = bus_dma_tag_create(NULL, PAGE_SIZE, 0,
1956                                    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
1957                                    NULL, NULL,
1958                                    ACX_RX_RING_SIZE, 1, ACX_RX_RING_SIZE,
1959                                    0, &rd->rx_ring_dma_tag);
1960         if (error) {
1961                 if_printf(&sc->sc_ic.ic_if, "can't create rx ring dma tag\n");
1962                 return error;
1963         }
1964
1965         error = bus_dmamem_alloc(rd->rx_ring_dma_tag, (void **)&rd->rx_ring,
1966                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
1967                                  &rd->rx_ring_dmamap);
1968         if (error) {
1969                 if_printf(&sc->sc_ic.ic_if,
1970                           "can't allocate rx ring dma memory\n");
1971                 bus_dma_tag_destroy(rd->rx_ring_dma_tag);
1972                 rd->rx_ring_dma_tag = NULL;
1973                 return error;
1974         }
1975
1976         error = bus_dmamap_load(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
1977                                 rd->rx_ring, ACX_RX_RING_SIZE,
1978                                 acx_ring_dma_addr, &rd->rx_ring_paddr,
1979                                 BUS_DMA_WAITOK);
1980         if (error) {
1981                 if_printf(&sc->sc_ic.ic_if, "can't get rx ring dma address\n");
1982                 bus_dmamem_free(rd->rx_ring_dma_tag, rd->rx_ring,
1983                                 rd->rx_ring_dmamap);
1984                 bus_dma_tag_destroy(rd->rx_ring_dma_tag);
1985                 rd->rx_ring_dma_tag = NULL;
1986                 return error;
1987         }
1988
1989         /* Allocate DMA stuffs for TX descriptors */
1990         error = bus_dma_tag_create(NULL, PAGE_SIZE, 0,
1991                                    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
1992                                    NULL, NULL,
1993                                    ACX_TX_RING_SIZE, 1, ACX_TX_RING_SIZE,
1994                                    0, &rd->tx_ring_dma_tag);
1995         if (error) {
1996                 if_printf(&sc->sc_ic.ic_if, "can't create tx ring dma tag\n");
1997                 return error;
1998         }
1999
2000         error = bus_dmamem_alloc(rd->tx_ring_dma_tag, (void **)&rd->tx_ring,
2001                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2002                                  &rd->tx_ring_dmamap);
2003         if (error) {
2004                 if_printf(&sc->sc_ic.ic_if,
2005                           "can't allocate tx ring dma memory\n");
2006                 bus_dma_tag_destroy(rd->tx_ring_dma_tag);
2007                 rd->tx_ring_dma_tag = NULL;
2008                 return error;
2009         }
2010
2011         error = bus_dmamap_load(rd->tx_ring_dma_tag, rd->tx_ring_dmamap,
2012                                 rd->tx_ring, ACX_TX_RING_SIZE,
2013                                 acx_ring_dma_addr, &rd->tx_ring_paddr,
2014                                 BUS_DMA_WAITOK);
2015         if (error) {
2016                 if_printf(&sc->sc_ic.ic_if, "can't get tx ring dma address\n");
2017                 bus_dmamem_free(rd->tx_ring_dma_tag, rd->tx_ring,
2018                                 rd->tx_ring_dmamap);
2019                 bus_dma_tag_destroy(rd->tx_ring_dma_tag);
2020                 rd->tx_ring_dma_tag = NULL;
2021                 return error;
2022         }
2023
2024         /* Create DMA tag for RX/TX mbuf map */
2025         error = bus_dma_tag_create(NULL, 1, 0,
2026                                    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
2027                                    NULL, NULL,
2028                                    MCLBYTES, 1, MCLBYTES,
2029                                    0, &bd->mbuf_dma_tag);
2030         if (error) {
2031                 if_printf(&sc->sc_ic.ic_if, "can't create mbuf dma tag\n");
2032                 return error;
2033         }
2034
2035         /* Create a spare RX DMA map */
2036         error = bus_dmamap_create(bd->mbuf_dma_tag, 0, &bd->mbuf_tmp_dmamap);
2037         if (error) {
2038                 if_printf(&sc->sc_ic.ic_if, "can't create tmp mbuf dma map\n");
2039                 bus_dma_tag_destroy(bd->mbuf_dma_tag);
2040                 bd->mbuf_dma_tag = NULL;
2041                 return error;
2042         }
2043
2044         /* Create DMA map for RX mbufs */
2045         for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
2046                 error = bus_dmamap_create(bd->mbuf_dma_tag, 0,
2047                                           &bd->rx_buf[i].rb_mbuf_dmamap);
2048                 if (error) {
2049                         if_printf(&sc->sc_ic.ic_if, "can't create rx mbuf "
2050                                   "dma map (%d)\n", i);
2051                         return error;
2052                 }
2053                 bd->rx_buf[i].rb_desc = &rd->rx_ring[i];
2054         }
2055
2056         /* Create DMA map for TX mbufs */
2057         for (i = 0; i < ACX_TX_DESC_CNT; ++i) {
2058                 error = bus_dmamap_create(bd->mbuf_dma_tag, 0,
2059                                           &bd->tx_buf[i].tb_mbuf_dmamap);
2060                 if (error) {
2061                         if_printf(&sc->sc_ic.ic_if, "can't create tx mbuf "
2062                                   "dma map (%d)\n", i);
2063                         return error;
2064                 }
2065                 bd->tx_buf[i].tb_desc1 = &rd->tx_ring[i * 2];
2066                 bd->tx_buf[i].tb_desc2 = &rd->tx_ring[(i * 2) + 1];
2067         }
2068
2069         return 0;
2070 }
2071
2072 static void
2073 acx_dma_free(struct acx_softc *sc)
2074 {
2075         struct acx_ring_data *rd = &sc->sc_ring_data;
2076         struct acx_buf_data *bd = &sc->sc_buf_data;
2077         int i;
2078
2079         if (rd->rx_ring_dma_tag != NULL) {
2080                 bus_dmamap_unload(rd->rx_ring_dma_tag, rd->rx_ring_dmamap);
2081                 bus_dmamem_free(rd->rx_ring_dma_tag, rd->rx_ring,
2082                                 rd->rx_ring_dmamap);
2083                 bus_dma_tag_destroy(rd->rx_ring_dma_tag);
2084         }
2085
2086         if (rd->tx_ring_dma_tag != NULL) {
2087                 bus_dmamap_unload(rd->tx_ring_dma_tag, rd->tx_ring_dmamap);
2088                 bus_dmamem_free(rd->tx_ring_dma_tag, rd->tx_ring,
2089                                 rd->tx_ring_dmamap);
2090                 bus_dma_tag_destroy(rd->tx_ring_dma_tag);
2091         }
2092
2093         for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
2094                 if (bd->rx_buf[i].rb_desc != NULL) {
2095                         if (bd->rx_buf[i].rb_mbuf != NULL) {
2096                                 bus_dmamap_unload(bd->mbuf_dma_tag,
2097                                                   bd->rx_buf[i].rb_mbuf_dmamap);
2098                                 m_freem(bd->rx_buf[i].rb_mbuf);
2099                         }
2100                         bus_dmamap_destroy(bd->mbuf_dma_tag,
2101                                            bd->rx_buf[i].rb_mbuf_dmamap);
2102                 }
2103         }
2104
2105         for (i = 0; i < ACX_TX_DESC_CNT; ++i) {
2106                 if (bd->tx_buf[i].tb_desc1 != NULL) {
2107                         if (bd->tx_buf[i].tb_mbuf != NULL) {
2108                                 bus_dmamap_unload(bd->mbuf_dma_tag,
2109                                                   bd->tx_buf[i].tb_mbuf_dmamap);
2110                                 m_freem(bd->tx_buf[i].tb_mbuf);
2111                         }
2112                         bus_dmamap_destroy(bd->mbuf_dma_tag,
2113                                            bd->tx_buf[i].tb_mbuf_dmamap);
2114                 }
2115         }
2116
2117         if (bd->mbuf_dma_tag != NULL) {
2118                 bus_dmamap_destroy(bd->mbuf_dma_tag, bd->mbuf_tmp_dmamap);
2119                 bus_dma_tag_destroy(bd->mbuf_dma_tag);
2120         }
2121 }
2122
2123 static int
2124 acx_init_tx_ring(struct acx_softc *sc)
2125 {
2126         struct acx_ring_data *rd;
2127         struct acx_buf_data *bd;
2128         uint32_t paddr;
2129         int i;
2130
2131         rd = &sc->sc_ring_data;
2132         paddr = rd->tx_ring_paddr;
2133         for (i = 0; i < (ACX_TX_DESC_CNT * 2) - 1; ++i) {
2134                 paddr += sizeof(struct acx_host_desc);
2135
2136                 rd->tx_ring[i].h_ctrl = htole16(DESC_CTRL_HOSTOWN);
2137
2138                 if (i == (ACX_TX_DESC_CNT * 2) - 1)
2139                         rd->tx_ring[i].h_next_desc = htole32(rd->tx_ring_paddr);
2140                 else
2141                         rd->tx_ring[i].h_next_desc = htole32(paddr);
2142         }
2143
2144         bus_dmamap_sync(rd->tx_ring_dma_tag, rd->tx_ring_dmamap,
2145                         BUS_DMASYNC_PREWRITE);
2146
2147         bd = &sc->sc_buf_data;
2148         bd->tx_free_start = 0;
2149         bd->tx_used_start = 0;
2150         bd->tx_used_count = 0;
2151
2152         return 0;
2153 }
2154
2155 static int
2156 acx_init_rx_ring(struct acx_softc *sc)
2157 {
2158         struct acx_ring_data *rd;
2159         struct acx_buf_data *bd;
2160         uint32_t paddr;
2161         int i;
2162
2163         bd = &sc->sc_buf_data;
2164         rd = &sc->sc_ring_data;
2165         paddr = rd->rx_ring_paddr;
2166
2167         for (i = 0; i < ACX_RX_DESC_CNT; ++i) {
2168                 int error;
2169
2170                 paddr += sizeof(struct acx_host_desc);
2171
2172                 error = acx_newbuf(sc, &bd->rx_buf[i], 1);
2173                 if (error)
2174                         return error;
2175
2176                 if (i == ACX_RX_DESC_CNT - 1)
2177                         rd->rx_ring[i].h_next_desc = htole32(rd->rx_ring_paddr);
2178                 else
2179                         rd->rx_ring[i].h_next_desc = htole32(paddr);
2180         }
2181
2182         bus_dmamap_sync(rd->rx_ring_dma_tag, rd->rx_ring_dmamap,
2183                         BUS_DMASYNC_PREWRITE);
2184
2185         bd->rx_scan_start = 0;
2186         return 0;
2187 }
2188
2189 static void
2190 acx_buf_dma_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2191                  bus_size_t mapsz, int error)
2192 {
2193         if (error)
2194                 return;
2195
2196         /* XXX */
2197         KASSERT(nseg == 1, ("too many RX dma segments\n"));
2198         *((uint32_t *)arg) = seg->ds_addr;
2199 }
2200
2201 static int
2202 acx_newbuf(struct acx_softc *sc, struct acx_rxbuf *rb, int wait)
2203 {
2204         struct acx_buf_data *bd;
2205         struct mbuf *m;
2206         bus_dmamap_t map;
2207         uint32_t paddr;
2208         int error;
2209
2210         bd = &sc->sc_buf_data;
2211
2212         m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2213         if (m == NULL)
2214                 return ENOBUFS;
2215
2216         m->m_len = m->m_pkthdr.len = MCLBYTES;
2217
2218         error = bus_dmamap_load_mbuf(bd->mbuf_dma_tag, bd->mbuf_tmp_dmamap,
2219                                      m, acx_buf_dma_addr, &paddr,
2220                                      wait ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2221         if (error) {
2222                 m_freem(m);
2223                 if_printf(&sc->sc_ic.ic_if, "can't map rx mbuf %d\n", error);
2224                 return error;
2225         }
2226
2227         /* Unload originally mapped mbuf */
2228         bus_dmamap_unload(bd->mbuf_dma_tag, rb->rb_mbuf_dmamap);
2229
2230         /* Swap this dmamap with tmp dmamap */
2231         map = rb->rb_mbuf_dmamap;
2232         rb->rb_mbuf_dmamap = bd->mbuf_tmp_dmamap;
2233         bd->mbuf_tmp_dmamap = map;
2234
2235         rb->rb_mbuf = m;
2236         rb->rb_desc->h_data_paddr = htole32(paddr);
2237         rb->rb_desc->h_data_len = htole16(m->m_len);
2238
2239         bus_dmamap_sync(bd->mbuf_dma_tag, rb->rb_mbuf_dmamap,
2240                         BUS_DMASYNC_PREREAD);
2241         return 0;
2242 }
2243
2244 static int
2245 acx_encap(struct acx_softc *sc, struct acx_txbuf *txbuf, struct mbuf *m,
2246           struct ieee80211_node *ni)
2247 {
2248         struct acx_buf_data *bd = &sc->sc_buf_data;
2249         struct acx_ring_data *rd = &sc->sc_ring_data;
2250         uint32_t paddr;
2251         uint8_t ctrl;
2252         int error;
2253
2254         KASSERT(txbuf->tb_mbuf == NULL, ("free TX buf has mbuf installed\n"));
2255         error = 0;
2256
2257         if (m->m_pkthdr.len > MCLBYTES) {
2258                 if_printf(&sc->sc_ic.ic_if, "mbuf too big\n");
2259                 error = E2BIG;
2260                 goto back;
2261         } else if (m->m_pkthdr.len < ACX_FRAME_HDRLEN) {
2262                 if_printf(&sc->sc_ic.ic_if, "mbuf too small\n");
2263                 error = EINVAL;
2264                 goto back;
2265         }
2266
2267         error = bus_dmamap_load_mbuf(bd->mbuf_dma_tag, txbuf->tb_mbuf_dmamap,
2268                                      m, acx_buf_dma_addr, &paddr,
2269                                      BUS_DMA_NOWAIT);
2270         if (error && error != EFBIG) {
2271                 if_printf(&sc->sc_ic.ic_if, "can't map tx mbuf1 %d\n", error);
2272                 goto back;
2273         }
2274
2275         if (error) {    /* error == EFBIG */
2276                 struct mbuf *m_new;
2277
2278                 m_new = m_defrag(m, MB_DONTWAIT);
2279                 if (m_new == NULL) {
2280                         if_printf(&sc->sc_ic.ic_if, "can't defrag tx mbuf\n");
2281                         error = ENOBUFS;
2282                         goto back;
2283                 } else {
2284                         m = m_new;
2285                 }
2286
2287                 error = bus_dmamap_load_mbuf(bd->mbuf_dma_tag,
2288                                              txbuf->tb_mbuf_dmamap, m,
2289                                              acx_buf_dma_addr, &paddr,
2290                                              BUS_DMA_NOWAIT);
2291                 if (error) {
2292                         if_printf(&sc->sc_ic.ic_if, "can't map tx mbuf2 %d\n",
2293                                   error);
2294                         goto back;
2295                 }
2296         }
2297
2298         error = 0;
2299
2300         bus_dmamap_sync(bd->mbuf_dma_tag, txbuf->tb_mbuf_dmamap,
2301                         BUS_DMASYNC_PREWRITE);
2302
2303         txbuf->tb_mbuf = m;
2304         txbuf->tb_node = ni;
2305
2306         /*
2307          * TX buffers are accessed in following way:
2308          * acx_fw_txdesc -> acx_host_desc -> buffer
2309          *
2310          * It is quite strange that acx also querys acx_host_desc next to
2311          * the one we have assigned to acx_fw_txdesc even if first one's
2312          * acx_host_desc.h_data_len == acx_fw_txdesc.f_tx_len
2313          *
2314          * So we allocate two acx_host_desc for one acx_fw_txdesc and
2315          * assign the first acx_host_desc to acx_fw_txdesc
2316          *
2317          * For acx111
2318          * host_desc1.h_data_len = buffer_len
2319          * host_desc2.h_data_len = buffer_len - mac_header_len
2320          *
2321          * For acx100
2322          * host_desc1.h_data_len = mac_header_len
2323          * host_desc2.h_data_len = buffer_len - mac_header_len
2324          */
2325
2326         txbuf->tb_desc1->h_data_paddr = htole32(paddr);
2327         txbuf->tb_desc2->h_data_paddr = htole32(paddr + ACX_FRAME_HDRLEN);
2328
2329         txbuf->tb_desc1->h_data_len =
2330                 htole16(sc->chip_txdesc1_len ? sc->chip_txdesc1_len
2331                                              : m->m_pkthdr.len);
2332         txbuf->tb_desc2->h_data_len =
2333                 htole16(m->m_pkthdr.len - ACX_FRAME_HDRLEN);
2334
2335         /*
2336          * NOTE:
2337          * We can't simply assign f_tx_ctrl, we will first read it back
2338          * and change it bit by bit
2339          */
2340         ctrl = FW_TXDESC_GETFIELD_1(sc, txbuf, f_tx_ctrl);
2341         ctrl |= sc->chip_fw_txdesc_ctrl; /* extra chip specific flags */
2342         ctrl &= ~(DESC_CTRL_HOSTOWN | DESC_CTRL_ACXDONE);
2343
2344         FW_TXDESC_SETFIELD_4(sc, txbuf, f_tx_len, m->m_pkthdr.len);
2345         FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_error, 0);
2346         FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_data_nretry, 0);
2347         FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_rts_nretry, 0);
2348         FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_rts_ok, 0);
2349         sc->chip_set_fw_txdesc_rate(sc, txbuf, ni, m->m_pkthdr.len);
2350
2351         txbuf->tb_desc1->h_ctrl = 0;
2352         txbuf->tb_desc2->h_ctrl = 0;
2353         bus_dmamap_sync(rd->tx_ring_dma_tag, rd->tx_ring_dmamap,
2354                         BUS_DMASYNC_PREWRITE);
2355
2356         FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_ctrl2, 0);
2357         FW_TXDESC_SETFIELD_1(sc, txbuf, f_tx_ctrl, ctrl);
2358
2359         /* Tell chip to inform us about TX completion */
2360         CSR_WRITE_2(sc, ACXREG_INTR_TRIG, ACXRV_TRIG_TX_FINI);
2361 back:
2362         if (error)
2363                 m_freem(m);
2364         return error;
2365 }
2366
2367 static int
2368 acx_set_null_tmplt(struct acx_softc *sc)
2369 {
2370         struct acx_tmplt_null_data n;
2371         struct ieee80211_frame *f;
2372
2373         bzero(&n, sizeof(n));
2374
2375         f = &n.data;
2376         f->i_fc[0] = IEEE80211_FC0_SUBTYPE_NODATA | IEEE80211_FC0_TYPE_DATA;
2377         IEEE80211_ADDR_COPY(f->i_addr1, etherbroadcastaddr);
2378         IEEE80211_ADDR_COPY(f->i_addr2, IF_LLADDR(&sc->sc_ic.ic_if));
2379         IEEE80211_ADDR_COPY(f->i_addr3, etherbroadcastaddr);
2380
2381         return _acx_set_null_data_tmplt(sc, &n, sizeof(n));
2382 }
2383
2384 static int
2385 acx_set_probe_req_tmplt(struct acx_softc *sc, const char *ssid, int ssid_len)
2386 {
2387         struct acx_tmplt_probe_req req;
2388         struct ieee80211_frame *f;
2389         uint8_t *v;
2390         int vlen;
2391
2392         bzero(&req, sizeof(req));
2393
2394         f = &req.data.u_data.f;
2395         f->i_fc[0] = IEEE80211_FC0_SUBTYPE_PROBE_REQ | IEEE80211_FC0_TYPE_MGT;
2396         IEEE80211_ADDR_COPY(f->i_addr1, etherbroadcastaddr);
2397         IEEE80211_ADDR_COPY(f->i_addr2, IF_LLADDR(&sc->sc_ic.ic_if));
2398         IEEE80211_ADDR_COPY(f->i_addr3, etherbroadcastaddr);
2399
2400         v = req.data.u_data.var;
2401         v = ieee80211_add_ssid(v, ssid, ssid_len);
2402         v = ieee80211_add_rates(v, &sc->sc_ic.ic_sup_rates[sc->chip_phymode]);
2403         v = ieee80211_add_xrates(v, &sc->sc_ic.ic_sup_rates[sc->chip_phymode]);
2404         vlen = v - req.data.u_data.var;
2405
2406         return _acx_set_probe_req_tmplt(sc, &req,
2407                                         ACX_TMPLT_PROBE_REQ_SIZ(vlen));
2408 }
2409
2410 static int
2411 acx_set_probe_resp_tmplt(struct acx_softc *sc, struct ieee80211_node *ni)
2412 {
2413         struct ieee80211com *ic = &sc->sc_ic;
2414         struct acx_tmplt_probe_resp resp;
2415         struct ieee80211_beacon_offsets bo;
2416         struct mbuf *m;
2417         int len;
2418
2419         bzero(&resp, sizeof(resp));
2420
2421         bzero(&bo, sizeof(bo));
2422         m = ieee80211_beacon_alloc(ic, ni, &bo);
2423         DPRINTF((&ic->ic_if, "%s alloc beacon size %d\n", __func__,
2424                  m->m_pkthdr.len));
2425
2426         m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)&resp.data);
2427         len = m->m_pkthdr.len + sizeof(resp.size);
2428         m_freem(m);
2429
2430         return _acx_set_probe_resp_tmplt(sc, &resp, len);
2431 }
2432
2433 static int
2434 acx_set_beacon_tmplt(struct acx_softc *sc, struct ieee80211_node *ni)
2435 {
2436         struct ieee80211com *ic = &sc->sc_ic;
2437         struct acx_tmplt_beacon beacon;
2438         struct ieee80211_beacon_offsets bo;
2439         struct mbuf *m;
2440         int len;
2441
2442         bzero(&beacon, sizeof(beacon));
2443
2444         bzero(&bo, sizeof(bo));
2445         m = ieee80211_beacon_alloc(ic, ni, &bo);
2446         DPRINTF((&ic->ic_if, "%s alloc beacon size %d\n", __func__,
2447                  m->m_pkthdr.len));
2448
2449         m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)&beacon.data);
2450         len = m->m_pkthdr.len + sizeof(beacon.size);
2451         m_freem(m);
2452
2453         return _acx_set_beacon_tmplt(sc, &beacon, len);
2454 }
2455
2456 static int
2457 acx_sysctl_msdu_lifetime(SYSCTL_HANDLER_ARGS)
2458 {
2459         struct acx_softc *sc = arg1;
2460         struct ifnet *ifp = &sc->sc_ic.ic_if;
2461         int error = 0, v;
2462
2463         lwkt_serialize_enter(ifp->if_serializer);
2464
2465         v = sc->sc_msdu_lifetime;
2466         error = sysctl_handle_int(oidp, &v, 0, req);
2467         if (error || req->newptr == NULL)
2468                 goto back;
2469         if (v <= 0) {
2470                 error = EINVAL;
2471                 goto back;
2472         }
2473
2474         if (sc->sc_flags & ACX_FLAG_FW_LOADED) {
2475                 struct acx_conf_msdu_lifetime msdu_lifetime;
2476
2477                 msdu_lifetime.lifetime = htole32(v);
2478                 if (acx_set_msdu_lifetime_conf(sc, &msdu_lifetime) != 0) {
2479                         if_printf(&sc->sc_ic.ic_if,
2480                                   "can't set MSDU lifetime\n");
2481                         error = ENXIO;
2482                         goto back;
2483                 }
2484         }
2485         sc->sc_msdu_lifetime = v;
2486 back:
2487         lwkt_serialize_exit(ifp->if_serializer);
2488         return error;
2489 }