sys/dev/netif/wpi/if_wpi.c

   1 /*-
   2  * Copyright (c) 2006,2007
   3  *      Damien Bergamini <damien.bergamini@free.fr>
   4  *      Benjamin Close <Benjamin.Close@clearchain.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #define VERSION "20071127"
  20
  21 #include <sys/cdefs.h>
  22 __FBSDID("$FreeBSD$");
  23
  24 /*
  25  * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters.
  26  *
  27  * The 3945ABG network adapter doesn't use traditional hardware as
  28  * many other adaptors do. Instead at run time the eeprom is set into a known
  29  * state and told to load boot firmware. The boot firmware loads an init and a
  30  * main  binary firmware image into SRAM on the card via DMA.
  31  * Once the firmware is loaded, the driver/hw then
  32  * communicate by way of circular dma rings via the SRAM to the firmware.
  33  *
  34  * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings.
  35  * The 4 tx data rings allow for prioritization QoS.
  36  *
  37  * The rx data ring consists of 32 dma buffers. Two registers are used to
  38  * indicate where in the ring the driver and the firmware are up to. The
  39  * driver sets the initial read index (reg1) and the initial write index (reg2),
  40  * the firmware updates the read index (reg1) on rx of a packet and fires an
  41  * interrupt. The driver then processes the buffers starting at reg1 indicating
  42  * to the firmware which buffers have been accessed by updating reg2. At the
  43  * same time allocating new memory for the processed buffer.
  44  *
  45  * A similar thing happens with the tx rings. The difference is the firmware
  46  * stop processing buffers once the queue is full and until confirmation
  47  * of a successful transmition (tx_intr) has occurred.
  48  *
  49  * The command ring operates in the same manner as the tx queues.
  50  *
  51  * All communication direct to the card (ie eeprom) is classed as Stage1
  52  * communication
  53  *
  54  * All communication via the firmware to the card is classed as State2.
  55  * The firmware consists of 2 parts. A bootstrap firmware and a runtime
  56  * firmware. The bootstrap firmware and runtime firmware are loaded
  57  * from host memory via dma to the card then told to execute. From this point
  58  * on the majority of communications between the driver and the card goes
  59  * via the firmware.
  60  */
  61
  62 #include "opt_wlan.h"
  63
  64 #include <sys/param.h>
  65 #include <sys/sysctl.h>
  66 #include <sys/sockio.h>
  67 #include <sys/mbuf.h>
  68 #include <sys/kernel.h>
  69 #include <sys/socket.h>
  70 #include <sys/systm.h>
  71 #include <sys/malloc.h>
  72 #include <sys/queue.h>
  73 #include <sys/taskqueue.h>
  74 #include <sys/module.h>
  75 #include <sys/bus.h>
  76 #include <sys/endian.h>
  77 #include <sys/linker.h>
  78 #include <sys/firmware.h>
  79
  80 #include <sys/stdbool.h>
  81 #include <sys/rman.h>
  82
  83 #include <bus/pci/pcireg.h>
  84 #include <bus/pci/pcivar.h>
  85
  86 #include <net/bpf.h>
  87 #include <net/if.h>
  88 #include <net/if_var.h>
  89 #include <net/if_arp.h>
  90 #include <net/ethernet.h>
  91 #include <net/if_dl.h>
  92 #include <net/if_media.h>
  93 #include <net/if_types.h>
  94 #include <net/ifq_var.h>
  95
  96 #include <netproto/802_11/ieee80211_var.h>
  97 #include <netproto/802_11/ieee80211_radiotap.h>
  98 #include <netproto/802_11/ieee80211_regdomain.h>
  99 #include <netproto/802_11/ieee80211_ratectl.h>
 100
 101 #include <netinet/in.h>
 102 #include <netinet/in_systm.h>
 103 #include <netinet/in_var.h>
 104 #include <netinet/ip.h>
 105 #include <netinet/if_ether.h>
 106
 107 #include <dev/netif/wpi/if_wpireg.h>
 108 #include <dev/netif/wpi/if_wpivar.h>
 109
 110 #define WPI_DEBUG
 111
 112 #ifdef WPI_DEBUG
 113 #define DPRINTF(x)      do { if (wpi_debug != 0) kprintf x; } while (0)
 114 #define DPRINTFN(n, x)  do { if (wpi_debug & n) kprintf x; } while (0)
 115 #define WPI_DEBUG_SET   (wpi_debug != 0)
 116
 117 enum {
 118         WPI_DEBUG_UNUSED        = 0x00000001,   /* Unused */
 119         WPI_DEBUG_HW            = 0x00000002,   /* Stage 1 (eeprom) debugging */
 120         WPI_DEBUG_TX            = 0x00000004,   /* Stage 2 TX intrp debugging*/
 121         WPI_DEBUG_RX            = 0x00000008,   /* Stage 2 RX intrp debugging */
 122         WPI_DEBUG_CMD           = 0x00000010,   /* Stage 2 CMD intrp debugging*/
 123         WPI_DEBUG_FIRMWARE      = 0x00000020,   /* firmware(9) loading debug  */
 124         WPI_DEBUG_DMA           = 0x00000040,   /* DMA (de)allocations/syncs  */
 125         WPI_DEBUG_SCANNING      = 0x00000080,   /* Stage 2 Scanning debugging */
 126         WPI_DEBUG_NOTIFY        = 0x00000100,   /* State 2 Noftif intr debug */
 127         WPI_DEBUG_TEMP          = 0x00000200,   /* TXPower/Temp Calibration */
 128         WPI_DEBUG_OPS           = 0x00000400,   /* wpi_ops taskq debug */
 129         WPI_DEBUG_WATCHDOG      = 0x00000800,   /* Watch dog debug */
 130         WPI_DEBUG_ANY           = 0xffffffff
 131 };
 132
 133 static int wpi_debug;
 134 SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level");
 135 TUNABLE_INT("debug.wpi", &wpi_debug);
 136
 137 #else
 138 #define DPRINTF(x)
 139 #define DPRINTFN(n, x)
 140 #define WPI_DEBUG_SET   0
 141 #endif
 142
 143 struct wpi_ident {
 144         uint16_t        vendor;
 145         uint16_t        device;
 146         uint16_t        subdevice;
 147         const char      *name;
 148 };
 149
 150 static const struct wpi_ident wpi_ident_table[] = {
 151         /* The below entries support ABG regardless of the subid */
 152         { 0x8086, 0x4222,    0x0, "Intel(R) PRO/Wireless 3945ABG" },
 153         { 0x8086, 0x4227,    0x0, "Intel(R) PRO/Wireless 3945ABG" },
 154         /* The below entries only support BG */
 155         { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG"  },
 156         { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG"  },
 157         { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG"  },
 158         { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG"  },
 159         { 0, 0, 0, NULL }
 160 };
 161
 162 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *,
 163                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 164                     const uint8_t [IEEE80211_ADDR_LEN],
 165                     const uint8_t [IEEE80211_ADDR_LEN]);
 166 static void     wpi_vap_delete(struct ieee80211vap *);
 167 static int      wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *,
 168                     void **, bus_size_t, bus_size_t, int);
 169 static void     wpi_dma_contig_free(struct wpi_dma_info *);
 170 static void     wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 171 static int      wpi_alloc_shared(struct wpi_softc *);
 172 static void     wpi_free_shared(struct wpi_softc *);
 173 static int      wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
 174 static void     wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
 175 static void     wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
 176 static int      wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *,
 177                     int, int);
 178 static void     wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
 179 static void     wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
 180 static int      wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 181 static void     wpi_mem_lock(struct wpi_softc *);
 182 static void     wpi_mem_unlock(struct wpi_softc *);
 183 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t);
 184 static void     wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t);
 185 static void     wpi_mem_write_region_4(struct wpi_softc *, uint16_t,
 186                     const uint32_t *, int);
 187 static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int);
 188 static int      wpi_alloc_fwmem(struct wpi_softc *);
 189 static void     wpi_free_fwmem(struct wpi_softc *);
 190 static int      wpi_load_firmware(struct wpi_softc *);
 191 static void     wpi_unload_firmware(struct wpi_softc *);
 192 static int      wpi_load_microcode(struct wpi_softc *, const uint8_t *, int);
 193 static void     wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *,
 194                     struct wpi_rx_data *);
 195 static void     wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *);
 196 static void     wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *);
 197 static void     wpi_notif_intr(struct wpi_softc *);
 198 static void     wpi_intr(void *);
 199 static uint8_t  wpi_plcp_signal(int);
 200 static void     wpi_watchdog(void *);
 201 static int      wpi_tx_data(struct wpi_softc *, struct mbuf *,
 202                     struct ieee80211_node *, int);
 203 static void     wpi_start(struct ifnet *, struct ifaltq_subque *);
 204 static void     wpi_start_locked(struct ifnet *);
 205 static int      wpi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 206                     const struct ieee80211_bpf_params *);
 207 static void     wpi_scan_start(struct ieee80211com *);
 208 static void     wpi_scan_end(struct ieee80211com *);
 209 static void     wpi_set_channel(struct ieee80211com *);
 210 static void     wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long);
 211 static void     wpi_scan_mindwell(struct ieee80211_scan_state *);
 212 static int      wpi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 213 static void     wpi_read_eeprom(struct wpi_softc *,
 214                     uint8_t macaddr[IEEE80211_ADDR_LEN]);
 215 static void     wpi_read_eeprom_channels(struct wpi_softc *, int);
 216 static void     wpi_read_eeprom_group(struct wpi_softc *, int);
 217 static int      wpi_cmd(struct wpi_softc *, int, const void *, int, int);
 218 static int      wpi_wme_update(struct ieee80211com *);
 219 static int      wpi_mrr_setup(struct wpi_softc *);
 220 static void     wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t);
 221 static void     wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *);
 222 #if 0
 223 static int      wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *);
 224 #endif
 225 static int      wpi_auth(struct wpi_softc *, struct ieee80211vap *);
 226 static int      wpi_run(struct wpi_softc *, struct ieee80211vap *);
 227 static int      wpi_scan(struct wpi_softc *);
 228 static int      wpi_config(struct wpi_softc *);
 229 static void     wpi_stop_master(struct wpi_softc *);
 230 static int      wpi_power_up(struct wpi_softc *);
 231 static int      wpi_reset(struct wpi_softc *);
 232 static void     wpi_hwreset(void *, int);
 233 static void     wpi_rfreset(void *, int);
 234 static void     wpi_hw_config(struct wpi_softc *);
 235 static void     wpi_init(void *);
 236 static void     wpi_init_locked(struct wpi_softc *, int);
 237 static void     wpi_stop(struct wpi_softc *);
 238 static void     wpi_stop_locked(struct wpi_softc *);
 239
 240 static int      wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *,
 241                     int);
 242 static void     wpi_calib_timeout(void *);
 243 static void     wpi_power_calibration(struct wpi_softc *, int);
 244 static int      wpi_get_power_index(struct wpi_softc *,
 245                     struct wpi_power_group *, struct ieee80211_channel *, int);
 246 #ifdef WPI_DEBUG
 247 static const char *wpi_cmd_str(int);
 248 #endif
 249 static int wpi_probe(device_t);
 250 static int wpi_attach(device_t);
 251 static int wpi_detach(device_t);
 252 static int wpi_shutdown(device_t);
 253 static int wpi_suspend(device_t);
 254 static int wpi_resume(device_t);
 255
 256 #if defined(__DragonFly__)
 257 static int  wpi_sleep(struct wpi_softc *sc, void *wchan,
 258                 int flags, const char *wmsg, int timo);
 259 #endif
 260
 261 static device_method_t wpi_methods[] = {
 262         /* Device interface */
 263         DEVMETHOD(device_probe,         wpi_probe),
 264         DEVMETHOD(device_attach,        wpi_attach),
 265         DEVMETHOD(device_detach,        wpi_detach),
 266         DEVMETHOD(device_shutdown,      wpi_shutdown),
 267         DEVMETHOD(device_suspend,       wpi_suspend),
 268         DEVMETHOD(device_resume,        wpi_resume),
 269
 270         DEVMETHOD_END
 271 };
 272
 273 static driver_t wpi_driver = {
 274         "wpi",
 275         wpi_methods,
 276         sizeof (struct wpi_softc)
 277 };
 278
 279 static devclass_t wpi_devclass;
 280
 281 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL);
 282
 283 MODULE_VERSION(wpi, 1);
 284
 285 static const uint8_t wpi_ridx_to_plcp[] = {
 286         /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */
 287         /* R1-R4 (ral/ural is R4-R1) */
 288         0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3,
 289         /* CCK: device-dependent */
 290         10, 20, 55, 110
 291 };
 292
 293 static const uint8_t wpi_ridx_to_rate[] = {
 294         12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */
 295         2, 4, 11, 22 /*CCK */
 296 };
 297
 298 static int
 299 wpi_probe(device_t dev)
 300 {
 301         const struct wpi_ident *ident;
 302
 303         for (ident = wpi_ident_table; ident->name != NULL; ident++) {
 304                 if (pci_get_vendor(dev) == ident->vendor &&
 305                     pci_get_device(dev) == ident->device) {
 306                         device_set_desc(dev, ident->name);
 307                         return (BUS_PROBE_DEFAULT);
 308                 }
 309         }
 310         return ENXIO;
 311 }
 312
 313 /**
 314  * Load the firmare image from disk to the allocated dma buffer.
 315  * we also maintain the reference to the firmware pointer as there
 316  * is times where we may need to reload the firmware but we are not
 317  * in a context that can access the filesystem (ie taskq cause by restart)
 318  *
 319  * @return 0 on success, an errno on failure
 320  */
 321 static int
 322 wpi_load_firmware(struct wpi_softc *sc)
 323 {
 324         const struct firmware *fp;
 325         struct wpi_dma_info *dma = &sc->fw_dma;
 326         const struct wpi_firmware_hdr *hdr;
 327         const uint8_t *itext, *idata, *rtext, *rdata, *btext;
 328         uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz;
 329         int error;
 330
 331         DPRINTFN(WPI_DEBUG_FIRMWARE,
 332             ("Attempting Loading Firmware from wpi_fw module\n"));
 333
 334         WPI_UNLOCK(sc);
 335
 336         if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) {
 337                 device_printf(sc->sc_dev,
 338                     "could not load firmware image 'wpifw'\n");
 339                 error = ENOENT;
 340                 WPI_LOCK(sc);
 341                 goto fail;
 342         }
 343
 344         fp = sc->fw_fp;
 345
 346         WPI_LOCK(sc);
 347
 348         /* Validate the firmware is minimum a particular version */
 349         if (fp->version < WPI_FW_MINVERSION) {
 350             device_printf(sc->sc_dev,
 351                            "firmware version is too old. Need %d, got %d\n",
 352                            WPI_FW_MINVERSION,
 353                            fp->version);
 354             error = ENXIO;
 355             goto fail;
 356         }
 357
 358         if (fp->datasize < sizeof (struct wpi_firmware_hdr)) {
 359                 device_printf(sc->sc_dev,
 360                     "firmware file too short: %zu bytes\n", fp->datasize);
 361                 error = ENXIO;
 362                 goto fail;
 363         }
 364
 365         hdr = (const struct wpi_firmware_hdr *)fp->data;
 366
 367         /*     |  RUNTIME FIRMWARE   |    INIT FIRMWARE    | BOOT FW  |
 368            |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */
 369
 370         rtextsz = le32toh(hdr->rtextsz);
 371         rdatasz = le32toh(hdr->rdatasz);
 372         itextsz = le32toh(hdr->itextsz);
 373         idatasz = le32toh(hdr->idatasz);
 374         btextsz = le32toh(hdr->btextsz);
 375
 376         /* check that all firmware segments are present */
 377         if (fp->datasize < sizeof (struct wpi_firmware_hdr) +
 378                 rtextsz + rdatasz + itextsz + idatasz + btextsz) {
 379                 device_printf(sc->sc_dev,
 380                     "firmware file too short: %zu bytes\n", fp->datasize);
 381                 error = ENXIO; /* XXX appropriate error code? */
 382                 goto fail;
 383         }
 384
 385         /* get pointers to firmware segments */
 386         rtext = (const uint8_t *)(hdr + 1);
 387         rdata = rtext + rtextsz;
 388         itext = rdata + rdatasz;
 389         idata = itext + itextsz;
 390         btext = idata + idatasz;
 391
 392         DPRINTFN(WPI_DEBUG_FIRMWARE,
 393             ("Firmware Version: Major %d, Minor %d, Driver %d, \n"
 394              "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n",
 395              (le32toh(hdr->version) & 0xff000000) >> 24,
 396              (le32toh(hdr->version) & 0x00ff0000) >> 16,
 397              (le32toh(hdr->version) & 0x0000ffff),
 398              rtextsz, rdatasz,
 399              itextsz, idatasz, btextsz));
 400
 401         DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext));
 402         DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata));
 403         DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext));
 404         DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata));
 405         DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext));
 406
 407         /* sanity checks */
 408         if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ ||
 409             rdatasz > WPI_FW_MAIN_DATA_MAXSZ ||
 410             itextsz > WPI_FW_INIT_TEXT_MAXSZ ||
 411             idatasz > WPI_FW_INIT_DATA_MAXSZ ||
 412             btextsz > WPI_FW_BOOT_TEXT_MAXSZ ||
 413             (btextsz & 3) != 0) {
 414                 device_printf(sc->sc_dev, "firmware invalid\n");
 415                 error = EINVAL;
 416                 goto fail;
 417         }
 418
 419         /* copy initialization images into pre-allocated DMA-safe memory */
 420         memcpy(dma->vaddr, idata, idatasz);
 421         memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz);
 422
 423         bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
 424
 425         /* tell adapter where to find initialization images */
 426         wpi_mem_lock(sc);
 427         wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
 428         wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz);
 429         wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
 430             dma->paddr + WPI_FW_INIT_DATA_MAXSZ);
 431         wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz);
 432         wpi_mem_unlock(sc);
 433
 434         /* load firmware boot code */
 435         if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) {
 436             device_printf(sc->sc_dev, "Failed to load microcode\n");
 437             goto fail;
 438         }
 439
 440         /* now press "execute" */
 441         WPI_WRITE(sc, WPI_RESET, 0);
 442
 443         /* wait at most one second for the first alive notification */
 444 #if defined(__DragonFly__)
 445         if ((error = wpi_sleep(sc, sc, PCATCH, "wpiinit", hz)) != 0) {
 446                 device_printf(sc->sc_dev,
 447                     "timeout waiting for adapter to initialize\n");
 448                 goto fail;
 449         }
 450 #else
 451         if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
 452                 device_printf(sc->sc_dev,
 453                     "timeout waiting for adapter to initialize\n");
 454                 goto fail;
 455         }
 456 #endif
 457
 458         /* copy runtime images into pre-allocated DMA-sage memory */
 459         memcpy(dma->vaddr, rdata, rdatasz);
 460         memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz);
 461         bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
 462
 463         /* tell adapter where to find runtime images */
 464         wpi_mem_lock(sc);
 465         wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
 466         wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz);
 467         wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
 468             dma->paddr + WPI_FW_MAIN_DATA_MAXSZ);
 469         wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz);
 470         wpi_mem_unlock(sc);
 471
 472         /* wait at most one second for the first alive notification */
 473 #if defined(__DragonFly__)
 474         if ((error = wpi_sleep(sc, sc, PCATCH, "wpiinit", hz)) != 0) {
 475                 device_printf(sc->sc_dev,
 476                     "timeout waiting for adapter to initialize2\n");
 477                 goto fail;
 478         }
 479 #else
 480         if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
 481                 device_printf(sc->sc_dev,
 482                     "timeout waiting for adapter to initialize2\n");
 483                 goto fail;
 484         }
 485 #endif
 486
 487         DPRINTFN(WPI_DEBUG_FIRMWARE,
 488             ("Firmware loaded to driver successfully\n"));
 489         return error;
 490 fail:
 491         wpi_unload_firmware(sc);
 492         return error;
 493 }
 494
 495 /**
 496  * Free the referenced firmware image
 497  */
 498 static void
 499 wpi_unload_firmware(struct wpi_softc *sc)
 500 {
 501
 502         if (sc->fw_fp) {
 503                 WPI_UNLOCK(sc);
 504                 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
 505                 WPI_LOCK(sc);
 506                 sc->fw_fp = NULL;
 507         }
 508 }
 509
 510 static int
 511 wpi_attach(device_t dev)
 512 {
 513         struct wpi_softc *sc = device_get_softc(dev);
 514         struct ifnet *ifp;
 515         struct ieee80211com *ic;
 516         int ac, error, rid, supportsa = 1;
 517         uint32_t tmp;
 518         const struct wpi_ident *ident;
 519         uint8_t macaddr[IEEE80211_ADDR_LEN];
 520
 521         sc->sc_dev = dev;
 522
 523         if (bootverbose || WPI_DEBUG_SET)
 524             device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION);
 525
 526         /*
 527          * Some card's only support 802.11b/g not a, check to see if
 528          * this is one such card. A 0x0 in the subdevice table indicates
 529          * the entire subdevice range is to be ignored.
 530          */
 531         for (ident = wpi_ident_table; ident->name != NULL; ident++) {
 532                 if (ident->subdevice &&
 533                     pci_get_subdevice(dev) == ident->subdevice) {
 534                     supportsa = 0;
 535                     break;
 536                 }
 537         }
 538
 539         /* Create the tasks that can be queued */
 540         TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc);
 541         TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc);
 542
 543         WPI_LOCK_INIT(sc);
 544
 545         callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
 546         callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);
 547
 548         /* disable the retry timeout register */
 549         pci_write_config(dev, 0x41, 0, 1);
 550
 551         /* enable bus-mastering */
 552         pci_enable_busmaster(dev);
 553
 554         rid = PCIR_BAR(0);
 555         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
 556             RF_ACTIVE);
 557         if (sc->mem == NULL) {
 558                 device_printf(dev, "could not allocate memory resource\n");
 559                 error = ENOMEM;
 560                 goto fail;
 561         }
 562
 563         sc->sc_st = rman_get_bustag(sc->mem);
 564         sc->sc_sh = rman_get_bushandle(sc->mem);
 565
 566         rid = 0;
 567         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
 568             RF_ACTIVE | RF_SHAREABLE);
 569         if (sc->irq == NULL) {
 570                 device_printf(dev, "could not allocate interrupt resource\n");
 571                 error = ENOMEM;
 572                 goto fail;
 573         }
 574
 575         /*
 576          * Allocate DMA memory for firmware transfers.
 577          */
 578         if ((error = wpi_alloc_fwmem(sc)) != 0) {
 579                 kprintf(": could not allocate firmware memory\n");
 580                 error = ENOMEM;
 581                 goto fail;
 582         }
 583
 584         /*
 585          * Put adapter into a known state.
 586          */
 587         if ((error = wpi_reset(sc)) != 0) {
 588                 device_printf(dev, "could not reset adapter\n");
 589                 goto fail;
 590         }
 591
 592         wpi_mem_lock(sc);
 593         tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
 594         if (bootverbose || WPI_DEBUG_SET)
 595             device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp);
 596
 597         wpi_mem_unlock(sc);
 598
 599         /* Allocate shared page */
 600         if ((error = wpi_alloc_shared(sc)) != 0) {
 601                 device_printf(dev, "could not allocate shared page\n");
 602                 goto fail;
 603         }
 604
 605         /* tx data queues  - 4 for QoS purposes */
 606         for (ac = 0; ac < WME_NUM_AC; ac++) {
 607                 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac);
 608                 if (error != 0) {
 609                     device_printf(dev, "could not allocate Tx ring %d\n",ac);
 610                     goto fail;
 611                 }
 612         }
 613
 614         /* command queue to talk to the card's firmware */
 615         error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4);
 616         if (error != 0) {
 617                 device_printf(dev, "could not allocate command ring\n");
 618                 goto fail;
 619         }
 620
 621         /* receive data queue */
 622         error = wpi_alloc_rx_ring(sc, &sc->rxq);
 623         if (error != 0) {
 624                 device_printf(dev, "could not allocate Rx ring\n");
 625                 goto fail;
 626         }
 627
 628         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 629         if (ifp == NULL) {
 630                 device_printf(dev, "can not if_alloc()\n");
 631                 error = ENOMEM;
 632                 goto fail;
 633         }
 634         ic = ifp->if_l2com;
 635
 636         ic->ic_ifp = ifp;
 637         ic->ic_softc = sc;
 638         ic->ic_name = device_get_nameunit(dev);
 639         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 640         ic->ic_opmode = IEEE80211_M_STA;        /* default to BSS mode */
 641
 642         /* set device capabilities */
 643         ic->ic_caps =
 644                   IEEE80211_C_STA               /* station mode supported */
 645                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 646                 | IEEE80211_C_TXPMGT            /* tx power management */
 647                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 648                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 649                 | IEEE80211_C_WPA               /* 802.11i */
 650 /* XXX looks like WME is partly supported? */
 651 #if 0
 652                 | IEEE80211_C_IBSS              /* IBSS mode support */
 653                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 654                 | IEEE80211_C_WME               /* 802.11e */
 655                 | IEEE80211_C_HOSTAP            /* Host access point mode */
 656 #endif
 657                 ;
 658
 659         /*
 660          * Read in the eeprom and also setup the channels for
 661          * net80211. We don't set the rates as net80211 does this for us
 662          */
 663         wpi_read_eeprom(sc, macaddr);
 664
 665         if (bootverbose || WPI_DEBUG_SET) {
 666             device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain);
 667             device_printf(sc->sc_dev, "Hardware Type: %c\n",
 668                           sc->type > 1 ? 'B': '?');
 669             device_printf(sc->sc_dev, "Hardware Revision: %c\n",
 670                           ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?');
 671             device_printf(sc->sc_dev, "SKU %s support 802.11a\n",
 672                           supportsa ? "does" : "does not");
 673
 674             /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check
 675                what sc->rev really represents - benjsc 20070615 */
 676         }
 677
 678         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 679         ifp->if_softc = sc;
 680         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 681         ifp->if_init = wpi_init;
 682         ifp->if_ioctl = wpi_ioctl;
 683         ifp->if_start = wpi_start;
 684 #if defined(__DragonFly__)
 685         ifp->if_nmbjclusters = WPI_RX_RING_COUNT;
 686         ifq_set_maxlen(&ifp->if_snd, ifqmaxlen);
 687 #else
 688         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 689         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 690         IFQ_SET_READY(&ifp->if_snd);
 691 #endif
 692
 693         /* ieee80211_ifattach() assumes that WLAN serializer is held */
 694         wlan_serialize_enter();
 695         ieee80211_ifattach(ic, macaddr);
 696         wlan_serialize_exit();
 697         /* override default methods */
 698         ic->ic_raw_xmit = wpi_raw_xmit;
 699         ic->ic_wme.wme_update = wpi_wme_update;
 700         ic->ic_scan_start = wpi_scan_start;
 701         ic->ic_scan_end = wpi_scan_end;
 702         ic->ic_set_channel = wpi_set_channel;
 703         ic->ic_scan_curchan = wpi_scan_curchan;
 704         ic->ic_scan_mindwell = wpi_scan_mindwell;
 705
 706         ic->ic_vap_create = wpi_vap_create;
 707         ic->ic_vap_delete = wpi_vap_delete;
 708
 709         ieee80211_radiotap_attach(ic,
 710             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 711                 WPI_TX_RADIOTAP_PRESENT,
 712             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 713                 WPI_RX_RADIOTAP_PRESENT);
 714
 715         /*
 716          * Hook our interrupt after all initialization is complete.
 717          */
 718 #if defined (__DragonFly__)
 719         error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE,
 720             wpi_intr, sc, &sc->sc_ih, &wlan_global_serializer);
 721 #else
 722         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE,
 723             NULL, wpi_intr, sc, &sc->sc_ih);
 724 #endif
 725         if (error != 0) {
 726                 device_printf(dev, "could not set up interrupt\n");
 727                 goto fail;
 728         }
 729
 730         if (bootverbose)
 731                 ieee80211_announce(ic);
 732 #ifdef XXX_DEBUG
 733         ieee80211_announce_channels(ic);
 734 #endif
 735         return 0;
 736
 737 fail:   wpi_detach(dev);
 738         return ENXIO;
 739 }
 740
 741 static int
 742 wpi_detach(device_t dev)
 743 {
 744         struct wpi_softc *sc = device_get_softc(dev);
 745         struct ifnet *ifp = sc->sc_ifp;
 746         struct ieee80211com *ic;
 747         int ac;
 748
 749         if (sc->irq != NULL)
 750                 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 751
 752         if (ifp != NULL) {
 753                 ic = ifp->if_l2com;
 754
 755                 ieee80211_draintask(ic, &sc->sc_restarttask);
 756                 ieee80211_draintask(ic, &sc->sc_radiotask);
 757                 wpi_stop(sc);
 758                 callout_drain(&sc->watchdog_to);
 759                 callout_drain(&sc->calib_to);
 760                 ieee80211_ifdetach(ic);
 761         }
 762
 763         WPI_LOCK(sc);
 764         if (sc->txq[0].data_dmat) {
 765                 for (ac = 0; ac < WME_NUM_AC; ac++)
 766                         wpi_free_tx_ring(sc, &sc->txq[ac]);
 767
 768                 wpi_free_tx_ring(sc, &sc->cmdq);
 769                 wpi_free_rx_ring(sc, &sc->rxq);
 770                 wpi_free_shared(sc);
 771         }
 772
 773         if (sc->fw_fp != NULL) {
 774                 wpi_unload_firmware(sc);
 775         }
 776
 777         if (sc->fw_dma.tag)
 778                 wpi_free_fwmem(sc);
 779         WPI_UNLOCK(sc);
 780
 781         if (sc->irq != NULL)
 782                 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
 783                     sc->irq);
 784         if (sc->mem != NULL)
 785                 bus_release_resource(dev, SYS_RES_MEMORY,
 786                     rman_get_rid(sc->mem), sc->mem);
 787
 788         if (ifp != NULL)
 789                 if_free(ifp);
 790
 791         WPI_LOCK_DESTROY(sc);
 792
 793         return 0;
 794 }
 795
 796 static struct ieee80211vap *
 797 wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 798     enum ieee80211_opmode opmode, int flags,
 799     const uint8_t bssid[IEEE80211_ADDR_LEN],
 800     const uint8_t mac[IEEE80211_ADDR_LEN])
 801 {
 802         struct wpi_vap *wvp;
 803         struct ieee80211vap *vap;
 804
 805         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 806                 return NULL;
 807         wvp = (struct wpi_vap *) kmalloc(sizeof(struct wpi_vap),
 808             M_80211_VAP, M_INTWAIT | M_ZERO);
 809         if (wvp == NULL)
 810                 return NULL;
 811         vap = &wvp->vap;
 812         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 813         /* override with driver methods */
 814         wvp->newstate = vap->iv_newstate;
 815         vap->iv_newstate = wpi_newstate;
 816
 817         ieee80211_ratectl_init(vap);
 818         /* complete setup */
 819         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 820         ic->ic_opmode = opmode;
 821         return vap;
 822 }
 823
 824 static void
 825 wpi_vap_delete(struct ieee80211vap *vap)
 826 {
 827         struct wpi_vap *wvp = WPI_VAP(vap);
 828
 829         ieee80211_ratectl_deinit(vap);
 830         ieee80211_vap_detach(vap);
 831         kfree(wvp, M_80211_VAP);
 832 }
 833
 834 static void
 835 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
 836 {
 837         if (error != 0)
 838                 return;
 839
 840         KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
 841
 842         *(bus_addr_t *)arg = segs[0].ds_addr;
 843 }
 844
 845 /*
 846  * Allocates a contiguous block of dma memory of the requested size and
 847  * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217,
 848  * allocations greater than 4096 may fail. Hence if the requested alignment is
 849  * greater we allocate 'alignment' size extra memory and shift the vaddr and
 850  * paddr after the dma load. This bypasses the problem at the cost of a little
 851  * more memory.
 852  */
 853 static int
 854 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma,
 855     void **kvap, bus_size_t size, bus_size_t alignment, int flags)
 856 {
 857         int error;
 858         bus_size_t align;
 859         bus_size_t reqsize;
 860
 861         DPRINTFN(WPI_DEBUG_DMA,
 862             ("Size: %zd - alignment %zd\n", size, alignment));
 863
 864         dma->size = size;
 865         dma->tag = NULL;
 866
 867         if (alignment > 4096) {
 868                 align = PAGE_SIZE;
 869                 reqsize = size + alignment;
 870         } else {
 871                 align = alignment;
 872                 reqsize = size;
 873         }
 874 #if defined(__DragonFly__)
 875         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align,
 876             0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
 877             NULL, NULL, reqsize,
 878             1, reqsize, flags,
 879             &dma->tag);
 880 #else
 881         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align,
 882             0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
 883             NULL, NULL, reqsize,
 884             1, reqsize, flags,
 885             NULL, NULL, &dma->tag);
 886 #endif
 887         if (error != 0) {
 888                 device_printf(sc->sc_dev,
 889                     "could not create shared page DMA tag\n");
 890                 goto fail;
 891         }
 892         error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start,
 893             flags | BUS_DMA_ZERO, &dma->map);
 894         if (error != 0) {
 895                 device_printf(sc->sc_dev,
 896                     "could not allocate shared page DMA memory\n");
 897                 goto fail;
 898         }
 899
 900         error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start,
 901             reqsize,  wpi_dma_map_addr, &dma->paddr_start, flags);
 902
 903         /* Save the original pointers so we can free all the memory */
 904         dma->paddr = dma->paddr_start;
 905         dma->vaddr = dma->vaddr_start;
 906
 907         /*
 908          * Check the alignment and increment by 4096 until we get the
 909          * requested alignment. Fail if can't obtain the alignment
 910          * we requested.
 911          */
 912         if ((dma->paddr & (alignment -1 )) != 0) {
 913                 int i;
 914
 915                 for (i = 0; i < alignment / 4096; i++) {
 916                         if ((dma->paddr & (alignment - 1 )) == 0)
 917                                 break;
 918                         dma->paddr += 4096;
 919                         dma->vaddr += 4096;
 920                 }
 921                 if (i == alignment / 4096) {
 922                         device_printf(sc->sc_dev,
 923                             "alignment requirement was not satisfied\n");
 924                         goto fail;
 925                 }
 926         }
 927
 928         if (error != 0) {
 929                 device_printf(sc->sc_dev,
 930                     "could not load shared page DMA map\n");
 931                 goto fail;
 932         }
 933
 934         if (kvap != NULL)
 935                 *kvap = dma->vaddr;
 936
 937         return 0;
 938
 939 fail:
 940         wpi_dma_contig_free(dma);
 941         return error;
 942 }
 943
 944 static void
 945 wpi_dma_contig_free(struct wpi_dma_info *dma)
 946 {
 947         if (dma->tag) {
 948                 if (dma->vaddr_start != NULL) {
 949                         if (dma->paddr_start != 0) {
 950                                 bus_dmamap_sync(dma->tag, dma->map,
 951                                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 952                                 bus_dmamap_unload(dma->tag, dma->map);
 953                         }
 954                         bus_dmamem_free(dma->tag, dma->vaddr_start, dma->map);
 955                 }
 956                 bus_dma_tag_destroy(dma->tag);
 957         }
 958 }
 959
 960 /*
 961  * Allocate a shared page between host and NIC.
 962  */
 963 static int
 964 wpi_alloc_shared(struct wpi_softc *sc)
 965 {
 966         int error;
 967
 968         error = wpi_dma_contig_alloc(sc, &sc->shared_dma,
 969             (void **)&sc->shared, sizeof (struct wpi_shared),
 970             PAGE_SIZE,
 971             BUS_DMA_NOWAIT);
 972
 973         if (error != 0) {
 974                 device_printf(sc->sc_dev,
 975                     "could not allocate shared area DMA memory\n");
 976         }
 977
 978         return error;
 979 }
 980
 981 static void
 982 wpi_free_shared(struct wpi_softc *sc)
 983 {
 984         wpi_dma_contig_free(&sc->shared_dma);
 985 }
 986
 987 static int
 988 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
 989 {
 990
 991         int i, error;
 992
 993         ring->cur = 0;
 994
 995         error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
 996             (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t),
 997             WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
 998
 999         if (error != 0) {
1000                 device_printf(sc->sc_dev,
1001                     "%s: could not allocate rx ring DMA memory, error %d\n",
1002                     __func__, error);
1003                 goto fail;
1004         }
1005
1006 #if defined(__DragonFly__)
1007         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1008             BUS_SPACE_MAXADDR_32BIT,
1009             BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
1010             MJUMPAGESIZE, BUS_DMA_NOWAIT, &ring->data_dmat);
1011 #else
1012         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1013             BUS_SPACE_MAXADDR_32BIT,
1014             BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
1015             MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
1016 #endif
1017         if (error != 0) {
1018                 device_printf(sc->sc_dev,
1019                     "%s: bus_dma_tag_create_failed, error %d\n",
1020                     __func__, error);
1021                 goto fail;
1022         }
1023
1024         /*
1025          * Setup Rx buffers.
1026          */
1027         for (i = 0; i < WPI_RX_RING_COUNT; i++) {
1028                 struct wpi_rx_data *data = &ring->data[i];
1029                 struct mbuf *m;
1030                 bus_addr_t paddr;
1031
1032                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
1033                 if (error != 0) {
1034                         device_printf(sc->sc_dev,
1035                             "%s: bus_dmamap_create failed, error %d\n",
1036                             __func__, error);
1037                         goto fail;
1038                 }
1039                 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1040                 if (m == NULL) {
1041                         device_printf(sc->sc_dev,
1042                            "%s: could not allocate rx mbuf\n", __func__);
1043                         error = ENOMEM;
1044                         goto fail;
1045                 }
1046                 /* map page */
1047                 error = bus_dmamap_load(ring->data_dmat, data->map,
1048                     mtod(m, caddr_t), MJUMPAGESIZE,
1049                     wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1050                 if (error != 0 && error != EFBIG) {
1051                         device_printf(sc->sc_dev,
1052                             "%s: bus_dmamap_load failed, error %d\n",
1053                             __func__, error);
1054                         m_freem(m);
1055                         error = ENOMEM; /* XXX unique code */
1056                         goto fail;
1057                 }
1058                 bus_dmamap_sync(ring->data_dmat, data->map,
1059                     BUS_DMASYNC_PREWRITE);
1060
1061                 data->m = m;
1062                 ring->desc[i] = htole32(paddr);
1063         }
1064         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
1065             BUS_DMASYNC_PREWRITE);
1066         return 0;
1067 fail:
1068         wpi_free_rx_ring(sc, ring);
1069         return error;
1070 }
1071
1072 static void
1073 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
1074 {
1075         int ntries;
1076
1077         wpi_mem_lock(sc);
1078
1079         WPI_WRITE(sc, WPI_RX_CONFIG, 0);
1080
1081         for (ntries = 0; ntries < 100; ntries++) {
1082                 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE)
1083                         break;
1084                 DELAY(10);
1085         }
1086
1087         wpi_mem_unlock(sc);
1088
1089 #ifdef WPI_DEBUG
1090         if (ntries == 100 && wpi_debug > 0)
1091                 device_printf(sc->sc_dev, "timeout resetting Rx ring\n");
1092 #endif
1093
1094         ring->cur = 0;
1095 }
1096
1097 static void
1098 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
1099 {
1100         int i;
1101
1102         wpi_dma_contig_free(&ring->desc_dma);
1103
1104         for (i = 0; i < WPI_RX_RING_COUNT; i++) {
1105                 struct wpi_rx_data *data = &ring->data[i];
1106
1107                 if (data->m != NULL) {
1108                         bus_dmamap_sync(ring->data_dmat, data->map,
1109                             BUS_DMASYNC_POSTREAD);
1110                         bus_dmamap_unload(ring->data_dmat, data->map);
1111                         m_freem(data->m);
1112                 }
1113                 if (data->map != NULL)
1114                         bus_dmamap_destroy(ring->data_dmat, data->map);
1115         }
1116 }
1117
1118 static int
1119 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count,
1120         int qid)
1121 {
1122         struct wpi_tx_data *data;
1123         int i, error;
1124
1125         ring->qid = qid;
1126         ring->count = count;
1127         ring->queued = 0;
1128         ring->cur = 0;
1129         ring->data = NULL;
1130
1131         error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
1132                 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc),
1133                 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
1134
1135         if (error != 0) {
1136             device_printf(sc->sc_dev, "could not allocate tx dma memory\n");
1137             goto fail;
1138         }
1139
1140         /* update shared page with ring's base address */
1141         sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr);
1142
1143         error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
1144                 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN,
1145                 BUS_DMA_NOWAIT);
1146
1147         if (error != 0) {
1148                 device_printf(sc->sc_dev,
1149                     "could not allocate tx command DMA memory\n");
1150                 goto fail;
1151         }
1152
1153         ring->data = kmalloc(count * sizeof (struct wpi_tx_data), M_DEVBUF,
1154             M_INTWAIT | M_ZERO);
1155         if (ring->data == NULL) {
1156                 device_printf(sc->sc_dev,
1157                     "could not allocate tx data slots\n");
1158                 goto fail;
1159         }
1160
1161 #if defined(__DragonFly__)
1162         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1163             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
1164             WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT,
1165             &ring->data_dmat);
1166 #else
1167         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1168             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
1169             WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL,
1170             &ring->data_dmat);
1171 #endif
1172         if (error != 0) {
1173                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
1174                 goto fail;
1175         }
1176
1177         for (i = 0; i < count; i++) {
1178                 data = &ring->data[i];
1179
1180                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
1181                 if (error != 0) {
1182                         device_printf(sc->sc_dev,
1183                             "could not create tx buf DMA map\n");
1184                         goto fail;
1185                 }
1186                 bus_dmamap_sync(ring->data_dmat, data->map,
1187                     BUS_DMASYNC_PREWRITE);
1188         }
1189
1190         return 0;
1191
1192 fail:
1193         wpi_free_tx_ring(sc, ring);
1194         return error;
1195 }
1196
1197 static void
1198 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
1199 {
1200         struct wpi_tx_data *data;
1201         int i, ntries;
1202
1203         wpi_mem_lock(sc);
1204
1205         WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0);
1206         for (ntries = 0; ntries < 100; ntries++) {
1207                 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid))
1208                         break;
1209                 DELAY(10);
1210         }
1211 #ifdef WPI_DEBUG
1212         if (ntries == 100 && wpi_debug > 0)
1213                 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n",
1214                     ring->qid);
1215 #endif
1216         wpi_mem_unlock(sc);
1217
1218         for (i = 0; i < ring->count; i++) {
1219                 data = &ring->data[i];
1220
1221                 if (data->m != NULL) {
1222                         bus_dmamap_unload(ring->data_dmat, data->map);
1223                         m_freem(data->m);
1224                         data->m = NULL;
1225                 }
1226         }
1227
1228         ring->queued = 0;
1229         ring->cur = 0;
1230 }
1231
1232 static void
1233 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
1234 {
1235         struct wpi_tx_data *data;
1236         int i;
1237
1238         wpi_dma_contig_free(&ring->desc_dma);
1239         wpi_dma_contig_free(&ring->cmd_dma);
1240
1241         if (ring->data != NULL) {
1242                 for (i = 0; i < ring->count; i++) {
1243                         data = &ring->data[i];
1244
1245                         if (data->m != NULL) {
1246                                 bus_dmamap_sync(ring->data_dmat, data->map,
1247                                     BUS_DMASYNC_POSTWRITE);
1248                                 bus_dmamap_unload(ring->data_dmat, data->map);
1249                                 m_freem(data->m);
1250                                 data->m = NULL;
1251                         }
1252                 }
1253                 kfree(ring->data, M_DEVBUF);
1254         }
1255
1256         if (ring->data_dmat != NULL)
1257                 bus_dma_tag_destroy(ring->data_dmat);
1258 }
1259
1260 static int
1261 wpi_shutdown(device_t dev)
1262 {
1263         struct wpi_softc *sc = device_get_softc(dev);
1264
1265         WPI_LOCK(sc);
1266         wpi_stop_locked(sc);
1267         wpi_unload_firmware(sc);
1268         WPI_UNLOCK(sc);
1269
1270         return 0;
1271 }
1272
1273 static int
1274 wpi_suspend(device_t dev)
1275 {
1276         struct wpi_softc *sc = device_get_softc(dev);
1277         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
1278
1279         ieee80211_suspend_all(ic);
1280         return 0;
1281 }
1282
1283 static int
1284 wpi_resume(device_t dev)
1285 {
1286         struct wpi_softc *sc = device_get_softc(dev);
1287         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
1288
1289         pci_write_config(dev, 0x41, 0, 1);
1290
1291         ieee80211_resume_all(ic);
1292         return 0;
1293 }
1294
1295 /**
1296  * Called by net80211 when ever there is a change to 80211 state machine
1297  */
1298 static int
1299 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1300 {
1301         struct wpi_vap *wvp = WPI_VAP(vap);
1302         struct ieee80211com *ic = vap->iv_ic;
1303         struct wpi_softc *sc = ic->ic_softc;
1304         int error;
1305
1306         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
1307                 ieee80211_state_name[vap->iv_state],
1308                 ieee80211_state_name[nstate], sc->flags));
1309
1310         IEEE80211_UNLOCK(ic);
1311         WPI_LOCK(sc);
1312         if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) {
1313                 /*
1314                  * On !INIT -> SCAN transitions, we need to clear any possible
1315                  * knowledge about associations.
1316                  */
1317                 error = wpi_config(sc);
1318                 if (error != 0) {
1319                         device_printf(sc->sc_dev,
1320                             "%s: device config failed, error %d\n",
1321                             __func__, error);
1322                 }
1323         }
1324         if (nstate == IEEE80211_S_AUTH ||
1325             (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) {
1326                 /*
1327                  * The node must be registered in the firmware before auth.
1328                  * Also the associd must be cleared on RUN -> ASSOC
1329                  * transitions.
1330                  */
1331                 error = wpi_auth(sc, vap);
1332                 if (error != 0) {
1333                         device_printf(sc->sc_dev,
1334                             "%s: could not move to auth state, error %d\n",
1335                             __func__, error);
1336                 }
1337         }
1338         if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
1339                 error = wpi_run(sc, vap);
1340                 if (error != 0) {
1341                         device_printf(sc->sc_dev,
1342                             "%s: could not move to run state, error %d\n",
1343                             __func__, error);
1344                 }
1345         }
1346         if (nstate == IEEE80211_S_RUN) {
1347                 /* RUN -> RUN transition; just restart the timers */
1348                 wpi_calib_timeout(sc);
1349                 /* XXX split out rate control timer */
1350         }
1351         WPI_UNLOCK(sc);
1352         IEEE80211_LOCK(ic);
1353         return wvp->newstate(vap, nstate, arg);
1354 }
1355
1356 /*
1357  * Grab exclusive access to NIC memory.
1358  */
1359 static void
1360 wpi_mem_lock(struct wpi_softc *sc)
1361 {
1362         int ntries;
1363         uint32_t tmp;
1364
1365         tmp = WPI_READ(sc, WPI_GPIO_CTL);
1366         WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC);
1367
1368         /* spin until we actually get the lock */
1369         for (ntries = 0; ntries < 100; ntries++) {
1370                 if ((WPI_READ(sc, WPI_GPIO_CTL) &
1371                         (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK)
1372                         break;
1373                 DELAY(10);
1374         }
1375         if (ntries == 100)
1376                 device_printf(sc->sc_dev, "could not lock memory\n");
1377 }
1378
1379 /*
1380  * Release lock on NIC memory.
1381  */
1382 static void
1383 wpi_mem_unlock(struct wpi_softc *sc)
1384 {
1385         uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL);
1386         WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC);
1387 }
1388
1389 static uint32_t
1390 wpi_mem_read(struct wpi_softc *sc, uint16_t addr)
1391 {
1392         WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr);
1393         return WPI_READ(sc, WPI_READ_MEM_DATA);
1394 }
1395
1396 static void
1397 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data)
1398 {
1399         WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr);
1400         WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data);
1401 }
1402
1403 static void
1404 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr,
1405     const uint32_t *data, int wlen)
1406 {
1407         for (; wlen > 0; wlen--, data++, addr+=4)
1408                 wpi_mem_write(sc, addr, *data);
1409 }
1410
1411 /*
1412  * Read data from the EEPROM.  We access EEPROM through the MAC instead of
1413  * using the traditional bit-bang method. Data is read up until len bytes have
1414  * been obtained.
1415  */
1416 static uint16_t
1417 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len)
1418 {
1419         int ntries;
1420         uint32_t val;
1421         uint8_t *out = data;
1422
1423         wpi_mem_lock(sc);
1424
1425         for (; len > 0; len -= 2, addr++) {
1426                 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2);
1427
1428                 for (ntries = 0; ntries < 10; ntries++) {
1429                         if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY)
1430                                 break;
1431                         DELAY(5);
1432                 }
1433
1434                 if (ntries == 10) {
1435                         device_printf(sc->sc_dev, "could not read EEPROM\n");
1436                         return ETIMEDOUT;
1437                 }
1438
1439                 *out++= val >> 16;
1440                 if (len > 1)
1441                         *out ++= val >> 24;
1442         }
1443
1444         wpi_mem_unlock(sc);
1445
1446         return 0;
1447 }
1448
1449 /*
1450  * The firmware text and data segments are transferred to the NIC using DMA.
1451  * The driver just copies the firmware into DMA-safe memory and tells the NIC
1452  * where to find it.  Once the NIC has copied the firmware into its internal
1453  * memory, we can free our local copy in the driver.
1454  */
1455 static int
1456 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size)
1457 {
1458         int error, ntries;
1459
1460         DPRINTFN(WPI_DEBUG_HW,("Loading microcode  size 0x%x\n", size));
1461
1462         size /= sizeof(uint32_t);
1463
1464         wpi_mem_lock(sc);
1465
1466         wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE,
1467             (const uint32_t *)fw, size);
1468
1469         wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0);
1470         wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT);
1471         wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size);
1472
1473         /* run microcode */
1474         wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN);
1475
1476         /* wait while the adapter is busy copying the firmware */
1477         for (error = 0, ntries = 0; ntries < 1000; ntries++) {
1478                 uint32_t status = WPI_READ(sc, WPI_TX_STATUS);
1479                 DPRINTFN(WPI_DEBUG_HW,
1480                     ("firmware status=0x%x, val=0x%x, result=0x%x\n", status,
1481                      WPI_TX_IDLE(6), status & WPI_TX_IDLE(6)));
1482                 if (status & WPI_TX_IDLE(6)) {
1483                         DPRINTFN(WPI_DEBUG_HW,
1484                             ("Status Match! - ntries = %d\n", ntries));
1485                         break;
1486                 }
1487                 DELAY(10);
1488         }
1489         if (ntries == 1000) {
1490                 device_printf(sc->sc_dev, "timeout transferring firmware\n");
1491                 error = ETIMEDOUT;
1492         }
1493
1494         /* start the microcode executing */
1495         wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE);
1496
1497         wpi_mem_unlock(sc);
1498
1499         return (error);
1500 }
1501
1502 static void
1503 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc,
1504         struct wpi_rx_data *data)
1505 {
1506         struct ifnet *ifp = sc->sc_ifp;
1507         struct ieee80211com *ic = ifp->if_l2com;
1508         struct wpi_rx_ring *ring = &sc->rxq;
1509         struct wpi_rx_stat *stat;
1510         struct wpi_rx_head *head;
1511         struct wpi_rx_tail *tail;
1512         struct ieee80211_node *ni;
1513         struct mbuf *m, *mnew;
1514         bus_addr_t paddr;
1515         int error;
1516
1517         stat = (struct wpi_rx_stat *)(desc + 1);
1518
1519         if (stat->len > WPI_STAT_MAXLEN) {
1520                 device_printf(sc->sc_dev, "invalid rx statistic header\n");
1521 #if defined(__DragonFly__)
1522                 IFNET_STAT_INC(ifp, ierrors, 1);
1523 #else
1524                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1525 #endif
1526                 return;
1527         }
1528
1529         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
1530         head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len);
1531         tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len));
1532
1533         DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d "
1534             "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len),
1535             le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan,
1536             (uintmax_t)le64toh(tail->tstamp)));
1537
1538         /* discard Rx frames with bad CRC early */
1539         if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
1540                 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__,
1541                     le32toh(tail->flags)));
1542 #if defined(__DragonFly__)
1543                 IFNET_STAT_INC(ifp, ierrors, 1);
1544 #else
1545                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1546 #endif
1547                 return;
1548         }
1549         if (le16toh(head->len) < sizeof (struct ieee80211_frame)) {
1550                 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__,
1551                     le16toh(head->len)));
1552 #if defined(__DragonFly__)
1553                 IFNET_STAT_INC(ifp, ierrors, 1);
1554 #else
1555                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1556 #endif
1557                 return;
1558         }
1559
1560         /* XXX don't need mbuf, just dma buffer */
1561         mnew = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1562         if (mnew == NULL) {
1563                 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n",
1564                     __func__));
1565 #if defined(__DragonFly__)
1566                 IFNET_STAT_INC(ifp, ierrors, 1);
1567 #else
1568                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1569 #endif
1570                 return;
1571         }
1572         bus_dmamap_unload(ring->data_dmat, data->map);
1573
1574         error = bus_dmamap_load(ring->data_dmat, data->map,
1575             mtod(mnew, caddr_t), MJUMPAGESIZE,
1576             wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1577         if (error != 0 && error != EFBIG) {
1578                 device_printf(sc->sc_dev,
1579                     "%s: bus_dmamap_load failed, error %d\n", __func__, error);
1580                 m_freem(mnew);
1581 #if defined(__DragonFly__)
1582                 IFNET_STAT_INC(ifp, ierrors, 1);
1583 #else
1584                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1585 #endif
1586                 return;
1587         }
1588         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1589
1590         /* finalize mbuf and swap in new one */
1591         m = data->m;
1592         m->m_pkthdr.rcvif = ifp;
1593         m->m_data = (caddr_t)(head + 1);
1594         m->m_pkthdr.len = m->m_len = le16toh(head->len);
1595
1596         data->m = mnew;
1597         /* update Rx descriptor */
1598         ring->desc[ring->cur] = htole32(paddr);
1599
1600         if (ieee80211_radiotap_active(ic)) {
1601                 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap;
1602
1603                 tap->wr_flags = 0;
1604                 tap->wr_chan_freq =
1605                         htole16(ic->ic_channels[head->chan].ic_freq);
1606                 tap->wr_chan_flags =
1607                         htole16(ic->ic_channels[head->chan].ic_flags);
1608                 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET);
1609                 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise);
1610                 tap->wr_tsft = tail->tstamp;
1611                 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf;
1612                 switch (head->rate) {
1613                 /* CCK rates */
1614                 case  10: tap->wr_rate =   2; break;
1615                 case  20: tap->wr_rate =   4; break;
1616                 case  55: tap->wr_rate =  11; break;
1617                 case 110: tap->wr_rate =  22; break;
1618                 /* OFDM rates */
1619                 case 0xd: tap->wr_rate =  12; break;
1620                 case 0xf: tap->wr_rate =  18; break;
1621                 case 0x5: tap->wr_rate =  24; break;
1622                 case 0x7: tap->wr_rate =  36; break;
1623                 case 0x9: tap->wr_rate =  48; break;
1624                 case 0xb: tap->wr_rate =  72; break;
1625                 case 0x1: tap->wr_rate =  96; break;
1626                 case 0x3: tap->wr_rate = 108; break;
1627                 /* unknown rate: should not happen */
1628                 default:  tap->wr_rate =   0;
1629                 }
1630                 if (le16toh(head->flags) & 0x4)
1631                         tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
1632         }
1633
1634         WPI_UNLOCK(sc);
1635
1636         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1637         if (ni != NULL) {
1638                 (void) ieee80211_input(ni, m, stat->rssi, 0);
1639                 ieee80211_free_node(ni);
1640         } else
1641                 (void) ieee80211_input_all(ic, m, stat->rssi, 0);
1642
1643         WPI_LOCK(sc);
1644 }
1645
1646 static void
1647 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
1648 {
1649         struct ifnet *ifp = sc->sc_ifp;
1650         struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3];
1651         struct wpi_tx_data *txdata = &ring->data[desc->idx];
1652         struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1);
1653         struct ieee80211_node *ni = txdata->ni;
1654         struct ieee80211vap *vap = ni->ni_vap;
1655         int retrycnt = 0;
1656
1657         DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d "
1658             "rate=%x duration=%d status=%x\n", desc->qid, desc->idx,
1659             stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration),
1660             le32toh(stat->status)));
1661
1662         /*
1663          * Update rate control statistics for the node.
1664          * XXX we should not count mgmt frames since they're always sent at
1665          * the lowest available bit-rate.
1666          * XXX frames w/o ACK shouldn't be used either
1667          */
1668         if (stat->ntries > 0) {
1669                 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries));
1670                 retrycnt = 1;
1671         }
1672         ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS,
1673             &retrycnt, NULL);
1674
1675         /* XXX oerrors should only count errors !maxtries */
1676 #if defined(__DragonFly__)
1677         if ((le32toh(stat->status) & 0xff) != 1)
1678                 IFNET_STAT_INC(ifp, oerrors, 1);
1679         else
1680                 IFNET_STAT_INC(ifp, opackets, 1);
1681 #else
1682         if ((le32toh(stat->status) & 0xff) != 1)
1683                 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1684         else
1685                 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
1686 #endif
1687
1688         bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE);
1689         bus_dmamap_unload(ring->data_dmat, txdata->map);
1690         /* XXX handle M_TXCB? */
1691         m_freem(txdata->m);
1692         txdata->m = NULL;
1693         ieee80211_free_node(txdata->ni);
1694         txdata->ni = NULL;
1695
1696         ring->queued--;
1697
1698         sc->sc_tx_timer = 0;
1699 #if defined(__DragonFly__)
1700         ifq_clr_oactive(&ifp->if_snd);
1701 #else
1702         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1703 #endif
1704         wpi_start_locked(ifp);
1705 }
1706
1707 static void
1708 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
1709 {
1710         struct wpi_tx_ring *ring = &sc->cmdq;
1711         struct wpi_tx_data *data;
1712
1713         DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x "
1714                                  "type=%s len=%d\n", desc->qid, desc->idx,
1715                                  desc->flags, wpi_cmd_str(desc->type),
1716                                  le32toh(desc->len)));
1717
1718         if ((desc->qid & 7) != 4)
1719                 return; /* not a command ack */
1720
1721         data = &ring->data[desc->idx];
1722
1723         /* if the command was mapped in a mbuf, free it */
1724         if (data->m != NULL) {
1725                 bus_dmamap_unload(ring->data_dmat, data->map);
1726                 m_freem(data->m);
1727                 data->m = NULL;
1728         }
1729
1730         sc->flags &= ~WPI_FLAG_BUSY;
1731         wakeup(&ring->cmd[desc->idx]);
1732 }
1733
1734 static void
1735 wpi_notif_intr(struct wpi_softc *sc)
1736 {
1737         struct ifnet *ifp = sc->sc_ifp;
1738         struct ieee80211com *ic = ifp->if_l2com;
1739         struct wpi_rx_desc *desc;
1740         struct wpi_rx_data *data;
1741         uint32_t hw;
1742
1743         bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
1744             BUS_DMASYNC_POSTREAD);
1745
1746         hw = le32toh(sc->shared->next);
1747         while (sc->rxq.cur != hw) {
1748                 data = &sc->rxq.data[sc->rxq.cur];
1749
1750                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1751                     BUS_DMASYNC_POSTREAD);
1752                 desc = (void *)data->m->m_ext.ext_buf;
1753
1754                 DPRINTFN(WPI_DEBUG_NOTIFY,
1755                          ("notify qid=%x idx=%d flags=%x type=%d len=%d\n",
1756                           desc->qid,
1757                           desc->idx,
1758                           desc->flags,
1759                           desc->type,
1760                           le32toh(desc->len)));
1761
1762                 if (!(desc->qid & 0x80))        /* reply to a command */
1763                         wpi_cmd_intr(sc, desc);
1764
1765                 switch (desc->type) {
1766                 case WPI_RX_DONE:
1767                         /* a 802.11 frame was received */
1768                         wpi_rx_intr(sc, desc, data);
1769                         break;
1770
1771                 case WPI_TX_DONE:
1772                         /* a 802.11 frame has been transmitted */
1773                         wpi_tx_intr(sc, desc);
1774                         break;
1775
1776                 case WPI_UC_READY:
1777                 {
1778                         struct wpi_ucode_info *uc =
1779                                 (struct wpi_ucode_info *)(desc + 1);
1780
1781                         /* the microcontroller is ready */
1782                         DPRINTF(("microcode alive notification version %x "
1783                                 "alive %x\n", le32toh(uc->version),
1784                                 le32toh(uc->valid)));
1785
1786                         if (le32toh(uc->valid) != 1) {
1787                                 device_printf(sc->sc_dev,
1788                                     "microcontroller initialization failed\n");
1789                                 wpi_stop_locked(sc);
1790                         }
1791                         break;
1792                 }
1793                 case WPI_STATE_CHANGED:
1794                 {
1795                         uint32_t *status = (uint32_t *)(desc + 1);
1796
1797                         /* enabled/disabled notification */
1798                         DPRINTF(("state changed to %x\n", le32toh(*status)));
1799
1800                         if (le32toh(*status) & 1) {
1801                                 device_printf(sc->sc_dev,
1802                                     "Radio transmitter is switched off\n");
1803                                 sc->flags |= WPI_FLAG_HW_RADIO_OFF;
1804 #if defined(__DragonFly__)
1805                                 ifp->if_flags &= ~IFF_RUNNING;
1806 #else
1807                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1808 #endif
1809                                 /* Disable firmware commands */
1810                                 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD);
1811                         }
1812                         break;
1813                 }
1814                 case WPI_START_SCAN:
1815                 {
1816 #ifdef WPI_DEBUG
1817                         struct wpi_start_scan *scan =
1818                                 (struct wpi_start_scan *)(desc + 1);
1819 #endif
1820
1821                         DPRINTFN(WPI_DEBUG_SCANNING,
1822                                  ("scanning channel %d status %x\n",
1823                             scan->chan, le32toh(scan->status)));
1824                         break;
1825                 }
1826                 case WPI_STOP_SCAN:
1827                 {
1828 #ifdef WPI_DEBUG
1829                         struct wpi_stop_scan *scan =
1830                                 (struct wpi_stop_scan *)(desc + 1);
1831 #endif
1832                         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1833
1834                         DPRINTFN(WPI_DEBUG_SCANNING,
1835                             ("scan finished nchan=%d status=%d chan=%d\n",
1836                              scan->nchan, scan->status, scan->chan));
1837
1838                         sc->sc_scan_timer = 0;
1839                         ieee80211_scan_next(vap);
1840                         break;
1841                 }
1842                 case WPI_MISSED_BEACON:
1843                 {
1844                         struct wpi_missed_beacon *beacon =
1845                                 (struct wpi_missed_beacon *)(desc + 1);
1846                         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1847
1848                         if (le32toh(beacon->consecutive) >=
1849                             vap->iv_bmissthreshold) {
1850                                 DPRINTF(("Beacon miss: %u >= %u\n",
1851                                          le32toh(beacon->consecutive),
1852                                          vap->iv_bmissthreshold));
1853                                 ieee80211_beacon_miss(ic);
1854                         }
1855                         break;
1856                 }
1857                 }
1858
1859                 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;
1860         }
1861
1862         /* tell the firmware what we have processed */
1863         hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1;
1864         WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7);
1865 }
1866
1867 static void
1868 wpi_intr(void *arg)
1869 {
1870         struct wpi_softc *sc = arg;
1871         uint32_t r;
1872
1873         WPI_LOCK(sc);
1874
1875         r = WPI_READ(sc, WPI_INTR);
1876         if (r == 0 || r == 0xffffffff) {
1877                 WPI_UNLOCK(sc);
1878                 return;
1879         }
1880
1881         /* disable interrupts */
1882         WPI_WRITE(sc, WPI_MASK, 0);
1883         /* ack interrupts */
1884         WPI_WRITE(sc, WPI_INTR, r);
1885
1886         if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) {
1887                 struct ifnet *ifp = sc->sc_ifp;
1888                 struct ieee80211com *ic = ifp->if_l2com;
1889                 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1890
1891                 device_printf(sc->sc_dev, "fatal firmware error\n");
1892                 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" :
1893                                 "(Hardware Error)"));
1894                 if (vap != NULL)
1895                         ieee80211_cancel_scan(vap);
1896                 ieee80211_runtask(ic, &sc->sc_restarttask);
1897                 sc->flags &= ~WPI_FLAG_BUSY;
1898                 WPI_UNLOCK(sc);
1899                 return;
1900         }
1901
1902         if (r & WPI_RX_INTR)
1903                 wpi_notif_intr(sc);
1904
1905         if (r & WPI_ALIVE_INTR) /* firmware initialized */
1906                 wakeup(sc);
1907
1908         /* re-enable interrupts */
1909         if (sc->sc_ifp->if_flags & IFF_UP)
1910                 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
1911
1912         WPI_UNLOCK(sc);
1913 }
1914
1915 static uint8_t
1916 wpi_plcp_signal(int rate)
1917 {
1918         switch (rate) {
1919         /* CCK rates (returned values are device-dependent) */
1920         case 2:         return 10;
1921         case 4:         return 20;
1922         case 11:        return 55;
1923         case 22:        return 110;
1924
1925         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1926         /* R1-R4 (ral/ural is R4-R1) */
1927         case 12:        return 0xd;
1928         case 18:        return 0xf;
1929         case 24:        return 0x5;
1930         case 36:        return 0x7;
1931         case 48:        return 0x9;
1932         case 72:        return 0xb;
1933         case 96:        return 0x1;
1934         case 108:       return 0x3;
1935
1936         /* unsupported rates (should not get there) */
1937         default:        return 0;
1938         }
1939 }
1940
1941 /* quickly determine if a given rate is CCK or OFDM */
1942 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1943
1944 /*
1945  * Construct the data packet for a transmit buffer and acutally put
1946  * the buffer onto the transmit ring, kicking the card to process the
1947  * the buffer.
1948  */
1949 static int
1950 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1951         int ac)
1952 {
1953         struct ieee80211vap *vap = ni->ni_vap;
1954         struct ifnet *ifp = sc->sc_ifp;
1955         struct ieee80211com *ic = ifp->if_l2com;
1956         const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams;
1957         struct wpi_tx_ring *ring = &sc->txq[ac];
1958         struct wpi_tx_desc *desc;
1959         struct wpi_tx_data *data;
1960         struct wpi_tx_cmd *cmd;
1961         struct wpi_cmd_data *tx;
1962         struct ieee80211_frame *wh;
1963         const struct ieee80211_txparam *tp;
1964         struct ieee80211_key *k;
1965         struct mbuf *mnew;
1966         int i, error, nsegs, rate, hdrlen, ismcast;
1967         bus_dma_segment_t segs[WPI_MAX_SCATTER];
1968
1969         desc = &ring->desc[ring->cur];
1970         data = &ring->data[ring->cur];
1971
1972         wh = mtod(m0, struct ieee80211_frame *);
1973
1974         hdrlen = ieee80211_hdrsize(wh);
1975         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1976
1977         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1978                 k = ieee80211_crypto_encap(ni, m0);
1979                 if (k == NULL) {
1980                         m_freem(m0);
1981                         return ENOBUFS;
1982                 }
1983                 /* packet header may have moved, reset our local pointer */
1984                 wh = mtod(m0, struct ieee80211_frame *);
1985         }
1986
1987         cmd = &ring->cmd[ring->cur];
1988         cmd->code = WPI_CMD_TX_DATA;
1989         cmd->flags = 0;
1990         cmd->qid = ring->qid;
1991         cmd->idx = ring->cur;
1992
1993         tx = (struct wpi_cmd_data *)cmd->data;
1994         tx->flags = htole32(WPI_TX_AUTO_SEQ);
1995         tx->timeout = htole16(0);
1996         tx->ofdm_mask = 0xff;
1997         tx->cck_mask = 0x0f;
1998         tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
1999         tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS;
2000         tx->len = htole16(m0->m_pkthdr.len);
2001
2002         if (!ismcast) {
2003                 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 ||
2004                     !cap->cap_wmeParams[ac].wmep_noackPolicy)
2005                         tx->flags |= htole32(WPI_TX_NEED_ACK);
2006                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
2007                         tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP);
2008                         tx->rts_ntries = 7;
2009                 }
2010         }
2011         /* pick a rate */
2012         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
2013         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) {
2014                 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
2015                 /* tell h/w to set timestamp in probe responses */
2016                 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
2017                         tx->flags |= htole32(WPI_TX_INSERT_TSTAMP);
2018                 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
2019                     subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
2020                         tx->timeout = htole16(3);
2021                 else
2022                         tx->timeout = htole16(2);
2023                 rate = tp->mgmtrate;
2024         } else if (ismcast) {
2025                 rate = tp->mcastrate;
2026         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
2027                 rate = tp->ucastrate;
2028         } else {
2029                 (void) ieee80211_ratectl_rate(ni, NULL, 0);
2030                 rate = ni->ni_txrate;
2031         }
2032         tx->rate = wpi_plcp_signal(rate);
2033
2034         /* be very persistant at sending frames out */
2035 #if 0
2036         tx->data_ntries = tp->maxretry;
2037 #else
2038         tx->data_ntries = 15;           /* XXX way too high */
2039 #endif
2040
2041         if (ieee80211_radiotap_active_vap(vap)) {
2042                 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
2043                 tap->wt_flags = 0;
2044                 tap->wt_rate = rate;
2045                 tap->wt_hwqueue = ac;
2046                 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
2047                         tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
2048
2049                 ieee80211_radiotap_tx(vap, m0);
2050         }
2051
2052         /* save and trim IEEE802.11 header */
2053         m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh);
2054         m_adj(m0, hdrlen);
2055
2056 #if defined(__DragonFly__)
2057         error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map,
2058             m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
2059 #else
2060         error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
2061             &nsegs, BUS_DMA_NOWAIT);
2062 #endif
2063         if (error != 0 && error != EFBIG) {
2064                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
2065                     error);
2066                 m_freem(m0);
2067                 return error;
2068         }
2069         if (error != 0) {
2070                 /* XXX use m_collapse */
2071                 mnew = m_defrag(m0, M_NOWAIT);
2072                 if (mnew == NULL) {
2073                         device_printf(sc->sc_dev,
2074                             "could not defragment mbuf\n");
2075                         m_freem(m0);
2076                         return ENOBUFS;
2077                 }
2078                 m0 = mnew;
2079
2080 #if defined(__DragonFly__)
2081                 error = bus_dmamap_load_mbuf_segment(ring->data_dmat,
2082                     data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
2083 #else
2084                 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map,
2085                     m0, segs, &nsegs, BUS_DMA_NOWAIT);
2086 #endif
2087                 if (error != 0) {
2088                         device_printf(sc->sc_dev,
2089                             "could not map mbuf (error %d)\n", error);
2090                         m_freem(m0);
2091                         return error;
2092                 }
2093         }
2094
2095         data->m = m0;
2096         data->ni = ni;
2097
2098         DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n",
2099             ring->qid, ring->cur, m0->m_pkthdr.len, nsegs));
2100
2101         /* first scatter/gather segment is used by the tx data command */
2102         desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 |
2103             (1 + nsegs) << 24);
2104         desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2105             ring->cur * sizeof (struct wpi_tx_cmd));
2106         desc->segs[0].len  = htole32(4 + sizeof (struct wpi_cmd_data));
2107         for (i = 1; i <= nsegs; i++) {
2108                 desc->segs[i].addr = htole32(segs[i - 1].ds_addr);
2109                 desc->segs[i].len  = htole32(segs[i - 1].ds_len);
2110         }
2111
2112         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
2113         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
2114             BUS_DMASYNC_PREWRITE);
2115
2116         ring->queued++;
2117
2118         /* kick ring */
2119         ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
2120         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2121
2122         return 0;
2123 }
2124
2125 /**
2126  * Process data waiting to be sent on the IFNET output queue
2127  */
2128 static void
2129 wpi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
2130 {
2131         struct wpi_softc *sc = ifp->if_softc;
2132
2133         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
2134
2135         WPI_LOCK(sc);
2136         wpi_start_locked(ifp);
2137         WPI_UNLOCK(sc);
2138 }
2139
2140 static void
2141 wpi_start_locked(struct ifnet *ifp)
2142 {
2143         struct wpi_softc *sc = ifp->if_softc;
2144         struct ieee80211_node *ni;
2145         struct mbuf *m;
2146         int ac;
2147
2148         WPI_LOCK_ASSERT(sc);
2149
2150 #if defined(__DragonFly__)
2151         if ((ifp->if_flags & IFF_RUNNING) == 0)
2152                 return;
2153 #else
2154         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
2155                 return;
2156 #endif
2157
2158         for (;;) {
2159 #if defined(__DragonFly__)
2160                 m = ifq_dequeue(&ifp->if_snd);
2161 #else
2162                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
2163 #endif
2164                 if (m == NULL)
2165                         break;
2166                 ac = M_WME_GETAC(m);
2167                 if (sc->txq[ac].queued > sc->txq[ac].count - 8) {
2168                         /* there is no place left in this ring */
2169 #if defined(__DragonFly__)
2170                         ifq_prepend(&ifp->if_snd, m);
2171                         ifq_set_oactive(&ifp->if_snd);
2172 #else
2173                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
2174                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2175 #endif
2176                         break;
2177                 }
2178                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
2179                 if (wpi_tx_data(sc, m, ni, ac) != 0) {
2180                         ieee80211_free_node(ni);
2181 #if defined(__DragonFly__)
2182                         IFNET_STAT_INC(ifp, oerrors, 1);
2183 #else
2184                         if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
2185 #endif
2186                         break;
2187                 }
2188                 sc->sc_tx_timer = 5;
2189         }
2190 }
2191
2192 static int
2193 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2194         const struct ieee80211_bpf_params *params)
2195 {
2196         struct ieee80211com *ic = ni->ni_ic;
2197         struct ifnet *ifp = ic->ic_ifp;
2198         struct wpi_softc *sc = ic->ic_softc;
2199
2200         /* prevent management frames from being sent if we're not ready */
2201 #if defined(__DragonFly__)
2202         if (!(ifp->if_flags & IFF_RUNNING)) {
2203                 m_freem(m);
2204                 ieee80211_free_node(ni);
2205                 return ENETDOWN;
2206         }
2207 #else
2208         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2209                 m_freem(m);
2210                 ieee80211_free_node(ni);
2211                 return ENETDOWN;
2212         }
2213 #endif
2214         WPI_LOCK(sc);
2215
2216         /* management frames go into ring 0 */
2217         if (sc->txq[0].queued > sc->txq[0].count - 8) {
2218 #if defined(__DragonFly__)
2219                 ifq_set_oactive(&ifp->if_snd);
2220 #else
2221                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2222 #endif
2223                 m_freem(m);
2224                 WPI_UNLOCK(sc);
2225                 ieee80211_free_node(ni);
2226                 return ENOBUFS;         /* XXX */
2227         }
2228
2229 #if defined(__DragonFly__)
2230         IFNET_STAT_INC(ifp, opackets, 1);
2231 #else
2232         if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
2233 #endif
2234         if (wpi_tx_data(sc, m, ni, 0) != 0)
2235                 goto bad;
2236         sc->sc_tx_timer = 5;
2237         callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
2238
2239         WPI_UNLOCK(sc);
2240         return 0;
2241 bad:
2242 #if defined(__DragonFly__)
2243         IFNET_STAT_INC(ifp, oerrors, 1);
2244 #else
2245         if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
2246 #endif
2247         WPI_UNLOCK(sc);
2248         ieee80211_free_node(ni);
2249         return EIO;             /* XXX */
2250 }
2251
2252 static int
2253 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data,
2254     struct ucred *cred __unused)
2255 {
2256         struct wpi_softc *sc = ifp->if_softc;
2257         struct ieee80211com *ic = ifp->if_l2com;
2258         struct ifreq *ifr = (struct ifreq *) data;
2259         int error = 0, startall = 0;
2260
2261         switch (cmd) {
2262         case SIOCSIFFLAGS:
2263                 WPI_LOCK(sc);
2264 #if defined(__DragonFly__)
2265                 if ((ifp->if_flags & IFF_UP)) {
2266                         if (!(ifp->if_flags & IFF_RUNNING)) {
2267                                 wpi_init_locked(sc, 0);
2268                                 startall = 1;
2269                         }
2270                 } else if ((ifp->if_flags & IFF_RUNNING) ||
2271                            (sc->flags & WPI_FLAG_HW_RADIO_OFF))
2272                         wpi_stop_locked(sc);
2273 #else
2274                 if ((ifp->if_flags & IFF_UP)) {
2275                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2276                                 wpi_init_locked(sc, 0);
2277                                 startall = 1;
2278                         }
2279                 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) ||
2280                            (sc->flags & WPI_FLAG_HW_RADIO_OFF))
2281                         wpi_stop_locked(sc);
2282 #endif
2283                 WPI_UNLOCK(sc);
2284                 if (startall)
2285                         ieee80211_start_all(ic);
2286                 break;
2287         case SIOCGIFMEDIA:
2288                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2289                 break;
2290         case SIOCGIFADDR:
2291                 error = ether_ioctl(ifp, cmd, data);
2292                 break;
2293         default:
2294                 error = EINVAL;
2295                 break;
2296         }
2297         return error;
2298 }
2299
2300 /*
2301  * Extract various information from EEPROM.
2302  */
2303 static void
2304 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
2305 {
2306         int i;
2307
2308         /* read the hardware capabilities, revision and SKU type */
2309         wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1);
2310         wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2);
2311         wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1);
2312
2313         /* read the regulatory domain */
2314         wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4);
2315
2316         /* read in the hw MAC address */
2317         wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6);
2318
2319         /* read the list of authorized channels */
2320         for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
2321                 wpi_read_eeprom_channels(sc,i);
2322
2323         /* read the power level calibration info for each group */
2324         for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
2325                 wpi_read_eeprom_group(sc,i);
2326 }
2327
2328 /*
2329  * Send a command to the firmware.
2330  */
2331 static int
2332 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async)
2333 {
2334         struct wpi_tx_ring *ring = &sc->cmdq;
2335         struct wpi_tx_desc *desc;
2336         struct wpi_tx_cmd *cmd;
2337
2338 #ifdef WPI_DEBUG
2339         if (!async) {
2340                 WPI_LOCK_ASSERT(sc);
2341         }
2342 #endif
2343
2344         DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size,
2345                     async));
2346
2347         if (sc->flags & WPI_FLAG_BUSY) {
2348                 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
2349                     __func__, code);
2350                 return EAGAIN;
2351         }
2352         sc->flags|= WPI_FLAG_BUSY;
2353
2354         KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes",
2355             code, size));
2356
2357         desc = &ring->desc[ring->cur];
2358         cmd = &ring->cmd[ring->cur];
2359
2360         cmd->code = code;
2361         cmd->flags = 0;
2362         cmd->qid = ring->qid;
2363         cmd->idx = ring->cur;
2364         memcpy(cmd->data, buf, size);
2365
2366         desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24);
2367         desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2368                 ring->cur * sizeof (struct wpi_tx_cmd));
2369         desc->segs[0].len  = htole32(4 + size);
2370
2371         /* kick cmd ring */
2372         ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2373         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2374
2375         if (async) {
2376                 sc->flags &= ~ WPI_FLAG_BUSY;
2377                 return 0;
2378         }
2379
2380 #if defined(__DragonFly__)
2381         return wpi_sleep(sc, cmd, PCATCH, "wpicmd", hz);
2382 #else
2383         return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz);
2384 #endif
2385 }
2386
2387 static int
2388 wpi_wme_update(struct ieee80211com *ic)
2389 {
2390 #define WPI_EXP2(v)     htole16((1 << (v)) - 1)
2391 #define WPI_USEC(v)     htole16(IEEE80211_TXOP_TO_US(v))
2392         struct wpi_softc *sc = ic->ic_softc;
2393         const struct wmeParams *wmep;
2394         struct wpi_wme_setup wme;
2395         int ac;
2396
2397         /* don't override default WME values if WME is not actually enabled */
2398         if (!(ic->ic_flags & IEEE80211_F_WME))
2399                 return 0;
2400
2401         wme.flags = 0;
2402         for (ac = 0; ac < WME_NUM_AC; ac++) {
2403                 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
2404                 wme.ac[ac].aifsn = wmep->wmep_aifsn;
2405                 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin);
2406                 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax);
2407                 wme.ac[ac].txop  = WPI_USEC(wmep->wmep_txopLimit);
2408
2409                 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d "
2410                     "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin,
2411                     wme.ac[ac].cwmax, wme.ac[ac].txop));
2412         }
2413         return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1);
2414 #undef WPI_USEC
2415 #undef WPI_EXP2
2416 }
2417
2418 /*
2419  * Configure h/w multi-rate retries.
2420  */
2421 static int
2422 wpi_mrr_setup(struct wpi_softc *sc)
2423 {
2424         struct ifnet *ifp = sc->sc_ifp;
2425         struct ieee80211com *ic = ifp->if_l2com;
2426         struct wpi_mrr_setup mrr;
2427         int i, error;
2428
2429         memset(&mrr, 0, sizeof (struct wpi_mrr_setup));
2430
2431         /* CCK rates (not used with 802.11a) */
2432         for (i = WPI_CCK1; i <= WPI_CCK11; i++) {
2433                 mrr.rates[i].flags = 0;
2434                 mrr.rates[i].signal = wpi_ridx_to_plcp[i];
2435                 /* fallback to the immediate lower CCK rate (if any) */
2436                 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1;
2437                 /* try one time at this rate before falling back to "next" */
2438                 mrr.rates[i].ntries = 1;
2439         }
2440
2441         /* OFDM rates (not used with 802.11b) */
2442         for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) {
2443                 mrr.rates[i].flags = 0;
2444                 mrr.rates[i].signal = wpi_ridx_to_plcp[i];
2445                 /* fallback to the immediate lower OFDM rate (if any) */
2446                 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */
2447                 mrr.rates[i].next = (i == WPI_OFDM6) ?
2448                     ((ic->ic_curmode == IEEE80211_MODE_11A) ?
2449                         WPI_OFDM6 : WPI_CCK2) :
2450                     i - 1;
2451                 /* try one time at this rate before falling back to "next" */
2452                 mrr.rates[i].ntries = 1;
2453         }
2454
2455         /* setup MRR for control frames */
2456         mrr.which = WPI_MRR_CTL;
2457         error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
2458         if (error != 0) {
2459                 device_printf(sc->sc_dev,
2460                     "could not setup MRR for control frames\n");
2461                 return error;
2462         }
2463
2464         /* setup MRR for data frames */
2465         mrr.which = WPI_MRR_DATA;
2466         error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
2467         if (error != 0) {
2468                 device_printf(sc->sc_dev,
2469                     "could not setup MRR for data frames\n");
2470                 return error;
2471         }
2472
2473         return 0;
2474 }
2475
2476 static void
2477 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on)
2478 {
2479         struct wpi_cmd_led led;
2480
2481         led.which = which;
2482         led.unit = htole32(100000);     /* on/off in unit of 100ms */
2483         led.off = off;
2484         led.on = on;
2485
2486         (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1);
2487 }
2488
2489 static void
2490 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni)
2491 {
2492         struct wpi_cmd_tsf tsf;
2493         uint64_t val, mod;
2494
2495         memset(&tsf, 0, sizeof tsf);
2496         memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8);
2497         tsf.bintval = htole16(ni->ni_intval);
2498         tsf.lintval = htole16(10);
2499
2500         /* compute remaining time until next beacon */
2501         val = (uint64_t)ni->ni_intval  * 1024;  /* msec -> usec */
2502         mod = le64toh(tsf.tstamp) % val;
2503         tsf.binitval = htole32((uint32_t)(val - mod));
2504
2505         if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
2506                 device_printf(sc->sc_dev, "could not enable TSF\n");
2507 }
2508
2509 #if 0
2510 /*
2511  * Build a beacon frame that the firmware will broadcast periodically in
2512  * IBSS or HostAP modes.
2513  */
2514 static int
2515 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni)
2516 {
2517         struct ifnet *ifp = sc->sc_ifp;
2518         struct ieee80211com *ic = ifp->if_l2com;
2519         struct wpi_tx_ring *ring = &sc->cmdq;
2520         struct wpi_tx_desc *desc;
2521         struct wpi_tx_data *data;
2522         struct wpi_tx_cmd *cmd;
2523         struct wpi_cmd_beacon *bcn;
2524         struct ieee80211_beacon_offsets bo;
2525         struct mbuf *m0;
2526         bus_addr_t physaddr;
2527         int error;
2528
2529         desc = &ring->desc[ring->cur];
2530         data = &ring->data[ring->cur];
2531
2532         m0 = ieee80211_beacon_alloc(ic, ni, &bo);
2533         if (m0 == NULL) {
2534                 device_printf(sc->sc_dev, "could not allocate beacon frame\n");
2535                 return ENOMEM;
2536         }
2537
2538         cmd = &ring->cmd[ring->cur];
2539         cmd->code = WPI_CMD_SET_BEACON;
2540         cmd->flags = 0;
2541         cmd->qid = ring->qid;
2542         cmd->idx = ring->cur;
2543
2544         bcn = (struct wpi_cmd_beacon *)cmd->data;
2545         memset(bcn, 0, sizeof (struct wpi_cmd_beacon));
2546         bcn->id = WPI_ID_BROADCAST;
2547         bcn->ofdm_mask = 0xff;
2548         bcn->cck_mask = 0x0f;
2549         bcn->lifetime = htole32(WPI_LIFETIME_INFINITE);
2550         bcn->len = htole16(m0->m_pkthdr.len);
2551         bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
2552                 wpi_plcp_signal(12) : wpi_plcp_signal(2);
2553         bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP);
2554
2555         /* save and trim IEEE802.11 header */
2556         m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh);
2557         m_adj(m0, sizeof (struct ieee80211_frame));
2558
2559         /* assume beacon frame is contiguous */
2560         error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *),
2561             m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0);
2562         if (error != 0) {
2563                 device_printf(sc->sc_dev, "could not map beacon\n");
2564                 m_freem(m0);
2565                 return error;
2566         }
2567
2568         data->m = m0;
2569
2570         /* first scatter/gather segment is used by the beacon command */
2571         desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24);
2572         desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2573                 ring->cur * sizeof (struct wpi_tx_cmd));
2574         desc->segs[0].len  = htole32(4 + sizeof (struct wpi_cmd_beacon));
2575         desc->segs[1].addr = htole32(physaddr);
2576         desc->segs[1].len  = htole32(m0->m_pkthdr.len);
2577
2578         /* kick cmd ring */
2579         ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2580         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2581
2582         return 0;
2583 }
2584 #endif
2585
2586 static int
2587 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap)
2588 {
2589         struct ieee80211com *ic = vap->iv_ic;
2590         struct ieee80211_node *ni = vap->iv_bss;
2591         struct wpi_node_info node;
2592         int error;
2593
2594
2595         /* update adapter's configuration */
2596         sc->config.associd = 0;
2597         sc->config.filter &= ~htole32(WPI_FILTER_BSS);
2598         IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
2599         sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
2600         if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
2601                 sc->config.flags |= htole32(WPI_CONFIG_AUTO |
2602                     WPI_CONFIG_24GHZ);
2603         } else {
2604                 sc->config.flags &= ~htole32(WPI_CONFIG_AUTO |
2605                     WPI_CONFIG_24GHZ);
2606         }
2607         if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
2608                 sc->config.cck_mask  = 0;
2609                 sc->config.ofdm_mask = 0x15;
2610         } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
2611                 sc->config.cck_mask  = 0x03;
2612                 sc->config.ofdm_mask = 0;
2613         } else {
2614                 /* XXX assume 802.11b/g */
2615                 sc->config.cck_mask  = 0x0f;
2616                 sc->config.ofdm_mask = 0x15;
2617         }
2618
2619         DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan,
2620                 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask));
2621         error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
2622                 sizeof (struct wpi_config), 1);
2623         if (error != 0) {
2624                 device_printf(sc->sc_dev, "could not configure\n");
2625                 return error;
2626         }
2627
2628         /* configuration has changed, set Tx power accordingly */
2629         if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) {
2630                 device_printf(sc->sc_dev, "could not set Tx power\n");
2631                 return error;
2632         }
2633
2634         /* add default node */
2635         memset(&node, 0, sizeof node);
2636         IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid);
2637         node.id = WPI_ID_BSS;
2638         node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
2639             wpi_plcp_signal(12) : wpi_plcp_signal(2);
2640         node.action = htole32(WPI_ACTION_SET_RATE);
2641         node.antenna = WPI_ANTENNA_BOTH;
2642         error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
2643         if (error != 0)
2644                 device_printf(sc->sc_dev, "could not add BSS node\n");
2645
2646         return (error);
2647 }
2648
2649 static int
2650 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap)
2651 {
2652         struct ieee80211com *ic = vap->iv_ic;
2653         struct ieee80211_node *ni = vap->iv_bss;
2654         int error;
2655
2656         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
2657                 /* link LED blinks while monitoring */
2658                 wpi_set_led(sc, WPI_LED_LINK, 5, 5);
2659                 return 0;
2660         }
2661
2662         wpi_enable_tsf(sc, ni);
2663
2664         /* update adapter's configuration */
2665         sc->config.associd = htole16(ni->ni_associd & ~0xc000);
2666         /* short preamble/slot time are negotiated when associating */
2667         sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE |
2668             WPI_CONFIG_SHSLOT);
2669         if (ic->ic_flags & IEEE80211_F_SHSLOT)
2670                 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT);
2671         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
2672                 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE);
2673         sc->config.filter |= htole32(WPI_FILTER_BSS);
2674
2675         /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */
2676
2677         DPRINTF(("config chan %d flags %x\n", sc->config.chan,
2678                     sc->config.flags));
2679         error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct
2680                     wpi_config), 1);
2681         if (error != 0) {
2682                 device_printf(sc->sc_dev, "could not update configuration\n");
2683                 return error;
2684         }
2685
2686         error = wpi_set_txpower(sc, ni->ni_chan, 1);
2687         if (error != 0) {
2688                 device_printf(sc->sc_dev, "could set txpower\n");
2689                 return error;
2690         }
2691
2692         /* link LED always on while associated */
2693         wpi_set_led(sc, WPI_LED_LINK, 0, 1);
2694
2695         /* start automatic rate control timer */
2696         callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
2697
2698         return (error);
2699 }
2700
2701 /*
2702  * Send a scan request to the firmware.  Since this command is huge, we map it
2703  * into a mbufcluster instead of using the pre-allocated set of commands. Note,
2704  * much of this code is similar to that in wpi_cmd but because we must manually
2705  * construct the probe & channels, we duplicate what's needed here. XXX In the
2706  * future, this function should be modified to use wpi_cmd to help cleanup the
2707  * code base.
2708  */
2709 static int
2710 wpi_scan(struct wpi_softc *sc)
2711 {
2712         struct ifnet *ifp = sc->sc_ifp;
2713         struct ieee80211com *ic = ifp->if_l2com;
2714         struct ieee80211_scan_state *ss = ic->ic_scan;
2715         struct wpi_tx_ring *ring = &sc->cmdq;
2716         struct wpi_tx_desc *desc;
2717         struct wpi_tx_data *data;
2718         struct wpi_tx_cmd *cmd;
2719         struct wpi_scan_hdr *hdr;
2720         struct wpi_scan_chan *chan;
2721         struct ieee80211_frame *wh;
2722         struct ieee80211_rateset *rs;
2723         struct ieee80211_channel *c;
2724         enum ieee80211_phymode mode;
2725         uint8_t *frm;
2726         int pktlen, error, i, nssid;
2727         bus_addr_t physaddr;
2728
2729         desc = &ring->desc[ring->cur];
2730         data = &ring->data[ring->cur];
2731
2732         data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
2733         if (data->m == NULL) {
2734                 device_printf(sc->sc_dev,
2735                     "could not allocate mbuf for scan command\n");
2736                 return ENOMEM;
2737         }
2738
2739         cmd = mtod(data->m, struct wpi_tx_cmd *);
2740         cmd->code = WPI_CMD_SCAN;
2741         cmd->flags = 0;
2742         cmd->qid = ring->qid;
2743         cmd->idx = ring->cur;
2744
2745         hdr = (struct wpi_scan_hdr *)cmd->data;
2746         memset(hdr, 0, sizeof(struct wpi_scan_hdr));
2747
2748         /*
2749          * Move to the next channel if no packets are received within 5 msecs
2750          * after sending the probe request (this helps to reduce the duration
2751          * of active scans).
2752          */
2753         hdr->quiet = htole16(5);
2754         hdr->threshold = htole16(1);
2755
2756         if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
2757                 /* send probe requests at 6Mbps */
2758                 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6];
2759
2760                 /* Enable crc checking */
2761                 hdr->promotion = htole16(1);
2762         } else {
2763                 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO);
2764                 /* send probe requests at 1Mbps */
2765                 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1];
2766         }
2767         hdr->tx.id = WPI_ID_BROADCAST;
2768         hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
2769         hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ);
2770
2771         memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids));
2772         nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS);
2773         for (i = 0; i < nssid; i++) {
2774                 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID;
2775                 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN);
2776                 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid,
2777                     hdr->scan_essids[i].esslen);
2778 #ifdef WPI_DEBUG
2779                 if (wpi_debug & WPI_DEBUG_SCANNING) {
2780                         kprintf("Scanning Essid: ");
2781                         ieee80211_print_essid(hdr->scan_essids[i].essid,
2782                             hdr->scan_essids[i].esslen);
2783                         kprintf("\n");
2784                 }
2785 #endif
2786         }
2787
2788         /*
2789          * Build a probe request frame.  Most of the following code is a
2790          * copy & paste of what is done in net80211.
2791          */
2792         wh = (struct ieee80211_frame *)&hdr->scan_essids[WPI_SCAN_MAX_ESSIDS];
2793         wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
2794                 IEEE80211_FC0_SUBTYPE_PROBE_REQ;
2795         wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
2796         IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
2797         IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
2798         IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
2799         *(u_int16_t *)&wh->i_dur[0] = 0;        /* filled by h/w */
2800         *(u_int16_t *)&wh->i_seq[0] = 0;        /* filled by h/w */
2801
2802         frm = (uint8_t *)(wh + 1);
2803
2804         mode = ieee80211_chan2mode(ic->ic_curchan);
2805         rs = &ic->ic_sup_rates[mode];
2806
2807         frm = ieee80211_add_ssid(frm, NULL, 0);
2808         frm = ieee80211_add_rates(frm, rs);
2809         frm = ieee80211_add_xrates(frm, rs);
2810
2811         /* setup length of probe request */
2812         hdr->tx.len = htole16(frm - (uint8_t *)wh);
2813
2814         /*
2815          * Construct information about the channel that we
2816          * want to scan. The firmware expects this to be directly
2817          * after the scan probe request
2818          */
2819         c = ic->ic_curchan;
2820         chan = (struct wpi_scan_chan *)frm;
2821         chan->chan = ieee80211_chan2ieee(ic, c);
2822         chan->flags = 0;
2823         if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
2824                 chan->flags |= WPI_CHAN_ACTIVE;
2825                 if (nssid != 0)
2826                         chan->flags |= WPI_CHAN_DIRECT;
2827         }
2828         chan->gain_dsp = 0x6e; /* Default level */
2829         if (IEEE80211_IS_CHAN_5GHZ(c)) {
2830                 chan->active = htole16(10);
2831                 chan->passive = htole16(ss->ss_maxdwell);
2832                 chan->gain_radio = 0x3b;
2833         } else {
2834                 chan->active = htole16(20);
2835                 chan->passive = htole16(ss->ss_maxdwell);
2836                 chan->gain_radio = 0x28;
2837         }
2838
2839         DPRINTFN(WPI_DEBUG_SCANNING,
2840             ("Scanning %u Passive: %d\n",
2841              chan->chan,
2842              c->ic_flags & IEEE80211_CHAN_PASSIVE));
2843
2844         hdr->nchan++;
2845         chan++;
2846
2847         frm += sizeof (struct wpi_scan_chan);
2848 #if 0
2849         // XXX All Channels....
2850         for (c  = &ic->ic_channels[1];
2851              c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) {
2852                 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags)
2853                         continue;
2854
2855                 chan->chan = ieee80211_chan2ieee(ic, c);
2856                 chan->flags = 0;
2857                 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
2858                     chan->flags |= WPI_CHAN_ACTIVE;
2859                     if (ic->ic_des_ssid[0].len != 0)
2860                         chan->flags |= WPI_CHAN_DIRECT;
2861                 }
2862                 chan->gain_dsp = 0x6e; /* Default level */
2863                 if (IEEE80211_IS_CHAN_5GHZ(c)) {
2864                         chan->active = htole16(10);
2865                         chan->passive = htole16(110);
2866                         chan->gain_radio = 0x3b;
2867                 } else {
2868                         chan->active = htole16(20);
2869                         chan->passive = htole16(120);
2870                         chan->gain_radio = 0x28;
2871                 }
2872
2873                 DPRINTFN(WPI_DEBUG_SCANNING,
2874                          ("Scanning %u Passive: %d\n",
2875                           chan->chan,
2876                           c->ic_flags & IEEE80211_CHAN_PASSIVE));
2877
2878                 hdr->nchan++;
2879                 chan++;
2880
2881                 frm += sizeof (struct wpi_scan_chan);
2882         }
2883 #endif
2884
2885         hdr->len = htole16(frm - (uint8_t *)hdr);
2886         pktlen = frm - (uint8_t *)cmd;
2887
2888         error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
2889             wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
2890         if (error != 0) {
2891                 device_printf(sc->sc_dev, "could not map scan command\n");
2892                 m_freem(data->m);
2893                 data->m = NULL;
2894                 return error;
2895         }
2896
2897         desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24);
2898         desc->segs[0].addr = htole32(physaddr);
2899         desc->segs[0].len  = htole32(pktlen);
2900
2901         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
2902             BUS_DMASYNC_PREWRITE);
2903         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
2904
2905         /* kick cmd ring */
2906         ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2907         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2908
2909         sc->sc_scan_timer = 5;
2910         return 0;       /* will be notified async. of failure/success */
2911 }
2912
2913 /**
2914  * Configure the card to listen to a particular channel, this transisions the
2915  * card in to being able to receive frames from remote devices.
2916  */
2917 static int
2918 wpi_config(struct wpi_softc *sc)
2919 {
2920         struct ifnet *ifp = sc->sc_ifp;
2921         struct ieee80211com *ic = ifp->if_l2com;
2922         struct wpi_power power;
2923         struct wpi_bluetooth bluetooth;
2924         struct wpi_node_info node;
2925         int error;
2926
2927         /* set power mode */
2928         memset(&power, 0, sizeof power);
2929         power.flags = htole32(WPI_POWER_CAM|0x8);
2930         error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0);
2931         if (error != 0) {
2932                 device_printf(sc->sc_dev, "could not set power mode\n");
2933                 return error;
2934         }
2935
2936         /* configure bluetooth coexistence */
2937         memset(&bluetooth, 0, sizeof bluetooth);
2938         bluetooth.flags = 3;
2939         bluetooth.lead = 0xaa;
2940         bluetooth.kill = 1;
2941         error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
2942             0);
2943         if (error != 0) {
2944                 device_printf(sc->sc_dev,
2945                     "could not configure bluetooth coexistence\n");
2946                 return error;
2947         }
2948
2949         /* configure adapter */
2950         memset(&sc->config, 0, sizeof (struct wpi_config));
2951         IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp));
2952         /*set default channel*/
2953         sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
2954         sc->config.flags = htole32(WPI_CONFIG_TSF);
2955         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2956                 sc->config.flags |= htole32(WPI_CONFIG_AUTO |
2957                     WPI_CONFIG_24GHZ);
2958         }
2959         sc->config.filter = 0;
2960         switch (ic->ic_opmode) {
2961         case IEEE80211_M_STA:
2962         case IEEE80211_M_WDS:   /* No know setup, use STA for now */
2963                 sc->config.mode = WPI_MODE_STA;
2964                 sc->config.filter |= htole32(WPI_FILTER_MULTICAST);
2965                 break;
2966         case IEEE80211_M_IBSS:
2967         case IEEE80211_M_AHDEMO:
2968                 sc->config.mode = WPI_MODE_IBSS;
2969                 sc->config.filter |= htole32(WPI_FILTER_BEACON |
2970                                              WPI_FILTER_MULTICAST);
2971                 break;
2972         case IEEE80211_M_HOSTAP:
2973                 sc->config.mode = WPI_MODE_HOSTAP;
2974                 break;
2975         case IEEE80211_M_MONITOR:
2976                 sc->config.mode = WPI_MODE_MONITOR;
2977                 sc->config.filter |= htole32(WPI_FILTER_MULTICAST |
2978                         WPI_FILTER_CTL | WPI_FILTER_PROMISC);
2979                 break;
2980         default:
2981                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2982                 return EINVAL;
2983         }
2984         sc->config.cck_mask  = 0x0f;    /* not yet negotiated */
2985         sc->config.ofdm_mask = 0xff;    /* not yet negotiated */
2986         error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
2987                 sizeof (struct wpi_config), 0);
2988         if (error != 0) {
2989                 device_printf(sc->sc_dev, "configure command failed\n");
2990                 return error;
2991         }
2992
2993         /* configuration has changed, set Tx power accordingly */
2994         if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) {
2995             device_printf(sc->sc_dev, "could not set Tx power\n");
2996             return error;
2997         }
2998
2999         /* add broadcast node */
3000         memset(&node, 0, sizeof node);
3001         IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr);
3002         node.id = WPI_ID_BROADCAST;
3003         node.rate = wpi_plcp_signal(2);
3004         error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0);
3005         if (error != 0) {
3006                 device_printf(sc->sc_dev, "could not add broadcast node\n");
3007                 return error;
3008         }
3009
3010         /* Setup rate scalling */
3011         error = wpi_mrr_setup(sc);
3012         if (error != 0) {
3013                 device_printf(sc->sc_dev, "could not setup MRR\n");
3014                 return error;
3015         }
3016
3017         return 0;
3018 }
3019
3020 static void
3021 wpi_stop_master(struct wpi_softc *sc)
3022 {
3023         uint32_t tmp;
3024         int ntries;
3025
3026         DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n"));
3027
3028         tmp = WPI_READ(sc, WPI_RESET);
3029         WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET);
3030
3031         tmp = WPI_READ(sc, WPI_GPIO_CTL);
3032         if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP)
3033                 return; /* already asleep */
3034
3035         for (ntries = 0; ntries < 100; ntries++) {
3036                 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED)
3037                         break;
3038                 DELAY(10);
3039         }
3040         if (ntries == 100) {
3041                 device_printf(sc->sc_dev, "timeout waiting for master\n");
3042         }
3043 }
3044
3045 static int
3046 wpi_power_up(struct wpi_softc *sc)
3047 {
3048         uint32_t tmp;
3049         int ntries;
3050
3051         wpi_mem_lock(sc);
3052         tmp = wpi_mem_read(sc, WPI_MEM_POWER);
3053         wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000);
3054         wpi_mem_unlock(sc);
3055
3056         for (ntries = 0; ntries < 5000; ntries++) {
3057                 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED)
3058                         break;
3059                 DELAY(10);
3060         }
3061         if (ntries == 5000) {
3062                 device_printf(sc->sc_dev,
3063                     "timeout waiting for NIC to power up\n");
3064                 return ETIMEDOUT;
3065         }
3066         return 0;
3067 }
3068
3069 static int
3070 wpi_reset(struct wpi_softc *sc)
3071 {
3072         uint32_t tmp;
3073         int ntries;
3074
3075         DPRINTFN(WPI_DEBUG_HW,
3076             ("Resetting the card - clearing any uploaded firmware\n"));
3077
3078         /* clear any pending interrupts */
3079         WPI_WRITE(sc, WPI_INTR, 0xffffffff);
3080
3081         tmp = WPI_READ(sc, WPI_PLL_CTL);
3082         WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT);
3083
3084         tmp = WPI_READ(sc, WPI_CHICKEN);
3085         WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS);
3086
3087         tmp = WPI_READ(sc, WPI_GPIO_CTL);
3088         WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT);
3089
3090         /* wait for clock stabilization */
3091         for (ntries = 0; ntries < 25000; ntries++) {
3092                 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK)
3093                         break;
3094                 DELAY(10);
3095         }
3096         if (ntries == 25000) {
3097                 device_printf(sc->sc_dev,
3098                     "timeout waiting for clock stabilization\n");
3099                 return ETIMEDOUT;
3100         }
3101
3102         /* initialize EEPROM */
3103         tmp = WPI_READ(sc, WPI_EEPROM_STATUS);
3104
3105         if ((tmp & WPI_EEPROM_VERSION) == 0) {
3106                 device_printf(sc->sc_dev, "EEPROM not found\n");
3107                 return EIO;
3108         }
3109         WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED);
3110
3111         return 0;
3112 }
3113
3114 static void
3115 wpi_hw_config(struct wpi_softc *sc)
3116 {
3117         uint32_t rev, hw;
3118
3119         /* voodoo from the Linux "driver".. */
3120         hw = WPI_READ(sc, WPI_HWCONFIG);
3121
3122         rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1);
3123         if ((rev & 0xc0) == 0x40)
3124                 hw |= WPI_HW_ALM_MB;
3125         else if (!(rev & 0x80))
3126                 hw |= WPI_HW_ALM_MM;
3127
3128         if (sc->cap == 0x80)
3129                 hw |= WPI_HW_SKU_MRC;
3130
3131         hw &= ~WPI_HW_REV_D;
3132         if ((le16toh(sc->rev) & 0xf0) == 0xd0)
3133                 hw |= WPI_HW_REV_D;
3134
3135         if (sc->type > 1)
3136                 hw |= WPI_HW_TYPE_B;
3137
3138         WPI_WRITE(sc, WPI_HWCONFIG, hw);
3139 }
3140
3141 static void
3142 wpi_rfkill_resume(struct wpi_softc *sc)
3143 {
3144         struct ifnet *ifp = sc->sc_ifp;
3145         struct ieee80211com *ic = ifp->if_l2com;
3146         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3147         int ntries;
3148
3149         /* enable firmware again */
3150         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3151         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
3152
3153         /* wait for thermal sensors to calibrate */
3154         for (ntries = 0; ntries < 1000; ntries++) {
3155                 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
3156                         break;
3157                 DELAY(10);
3158         }
3159
3160         if (ntries == 1000) {
3161                 device_printf(sc->sc_dev,
3162                     "timeout waiting for thermal calibration\n");
3163                 return;
3164         }
3165         DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
3166
3167         if (wpi_config(sc) != 0) {
3168                 device_printf(sc->sc_dev, "device config failed\n");
3169                 return;
3170         }
3171
3172 #if defined(__DragonFly__)
3173         ifq_clr_oactive(&ifp->if_snd);
3174         ifp->if_flags |= IFF_RUNNING;
3175 #else
3176         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3177         ifp->if_drv_flags |= IFF_DRV_RUNNING;
3178 #endif
3179         sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3180
3181         if (vap != NULL) {
3182                 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
3183                         if (vap->iv_opmode != IEEE80211_M_MONITOR) {
3184                                 ieee80211_beacon_miss(ic);
3185                                 wpi_set_led(sc, WPI_LED_LINK, 0, 1);
3186                         } else
3187                                 wpi_set_led(sc, WPI_LED_LINK, 5, 5);
3188                 } else {
3189                         ieee80211_scan_next(vap);
3190                         wpi_set_led(sc, WPI_LED_LINK, 20, 2);
3191                 }
3192         }
3193
3194         callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
3195 }
3196
3197 static void
3198 wpi_init_locked(struct wpi_softc *sc, int force)
3199 {
3200         struct ifnet *ifp = sc->sc_ifp;
3201         uint32_t tmp;
3202         int ntries, qid;
3203
3204         wpi_stop_locked(sc);
3205         (void)wpi_reset(sc);
3206
3207         wpi_mem_lock(sc);
3208         wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00);
3209         DELAY(20);
3210         tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
3211         wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800);
3212         wpi_mem_unlock(sc);
3213
3214         (void)wpi_power_up(sc);
3215         wpi_hw_config(sc);
3216
3217         /* init Rx ring */
3218         wpi_mem_lock(sc);
3219         WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr);
3220         WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr +
3221             offsetof(struct wpi_shared, next));
3222         WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7);
3223         WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010);
3224         wpi_mem_unlock(sc);
3225
3226         /* init Tx rings */
3227         wpi_mem_lock(sc);
3228         wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */
3229         wpi_mem_write(sc, WPI_MEM_RA, 1);   /* enable RA0 */
3230         wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */
3231         wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000);
3232         wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002);
3233         wpi_mem_write(sc, WPI_MEM_MAGIC4, 4);
3234         wpi_mem_write(sc, WPI_MEM_MAGIC5, 5);
3235
3236         WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr);
3237         WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5);
3238
3239         for (qid = 0; qid < 6; qid++) {
3240                 WPI_WRITE(sc, WPI_TX_CTL(qid), 0);
3241                 WPI_WRITE(sc, WPI_TX_BASE(qid), 0);
3242                 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008);
3243         }
3244         wpi_mem_unlock(sc);
3245
3246         /* clear "radio off" and "disable command" bits (reversed logic) */
3247         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3248         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
3249         sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3250
3251         /* clear any pending interrupts */
3252         WPI_WRITE(sc, WPI_INTR, 0xffffffff);
3253
3254         /* enable interrupts */
3255         WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
3256
3257         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3258         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3259
3260         if ((wpi_load_firmware(sc)) != 0) {
3261             device_printf(sc->sc_dev,
3262                 "A problem occurred loading the firmware to the driver\n");
3263             return;
3264         }
3265
3266         /* At this point the firmware is up and running. If the hardware
3267          * RF switch is turned off thermal calibration will fail, though
3268          * the card is still happy to continue to accept commands, catch
3269          * this case and schedule a task to watch for it to be turned on.
3270          */
3271         wpi_mem_lock(sc);
3272         tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
3273         wpi_mem_unlock(sc);
3274
3275         if (!(tmp & 0x1)) {
3276                 sc->flags |= WPI_FLAG_HW_RADIO_OFF;
3277                 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n");
3278                 goto out;
3279         }
3280
3281         /* wait for thermal sensors to calibrate */
3282         for (ntries = 0; ntries < 1000; ntries++) {
3283                 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
3284                         break;
3285                 DELAY(10);
3286         }
3287
3288         if (ntries == 1000) {
3289                 device_printf(sc->sc_dev,
3290                     "timeout waiting for thermal sensors calibration\n");
3291                 return;
3292         }
3293         DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
3294
3295         if (wpi_config(sc) != 0) {
3296                 device_printf(sc->sc_dev, "device config failed\n");
3297                 return;
3298         }
3299
3300 #if defined(__DragonFly__)
3301         ifq_clr_oactive(&ifp->if_snd);
3302         ifp->if_flags |= IFF_RUNNING;
3303 #else
3304         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3305         ifp->if_drv_flags |= IFF_DRV_RUNNING;
3306 #endif
3307 out:
3308         callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
3309 }
3310
3311 static void
3312 wpi_init(void *arg)
3313 {
3314         struct wpi_softc *sc = arg;
3315         struct ifnet *ifp = sc->sc_ifp;
3316         struct ieee80211com *ic = ifp->if_l2com;
3317
3318         WPI_LOCK(sc);
3319         wpi_init_locked(sc, 0);
3320         WPI_UNLOCK(sc);
3321
3322 #if defined(__DragonFly__)
3323         if (ifp->if_flags & IFF_RUNNING)
3324                 ieee80211_start_all(ic);                /* start all vaps */
3325 #else
3326         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
3327                 ieee80211_start_all(ic);                /* start all vaps */
3328 #endif
3329 }
3330
3331 static void
3332 wpi_stop_locked(struct wpi_softc *sc)
3333 {
3334         struct ifnet *ifp = sc->sc_ifp;
3335         uint32_t tmp;
3336         int ac;
3337
3338         sc->sc_tx_timer = 0;
3339         sc->sc_scan_timer = 0;
3340 #if defined(__DragonFly__)
3341         ifq_clr_oactive(&ifp->if_snd);
3342         ifp->if_flags &= ~IFF_RUNNING;
3343 #else
3344         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
3345 #endif
3346         sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3347         callout_stop_sync(&sc->watchdog_to);
3348         callout_stop_sync(&sc->calib_to);
3349
3350         /* disable interrupts */
3351         WPI_WRITE(sc, WPI_MASK, 0);
3352         WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK);
3353         WPI_WRITE(sc, WPI_INTR_STATUS, 0xff);
3354         WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000);
3355
3356         wpi_mem_lock(sc);
3357         wpi_mem_write(sc, WPI_MEM_MODE, 0);
3358         wpi_mem_unlock(sc);
3359
3360         /* reset all Tx rings */
3361         for (ac = 0; ac < 4; ac++)
3362                 wpi_reset_tx_ring(sc, &sc->txq[ac]);
3363         wpi_reset_tx_ring(sc, &sc->cmdq);
3364
3365         /* reset Rx ring */
3366         wpi_reset_rx_ring(sc, &sc->rxq);
3367
3368         wpi_mem_lock(sc);
3369         wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200);
3370         wpi_mem_unlock(sc);
3371
3372         DELAY(5);
3373
3374         wpi_stop_master(sc);
3375
3376         tmp = WPI_READ(sc, WPI_RESET);
3377         WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET);
3378         sc->flags &= ~WPI_FLAG_BUSY;
3379 }
3380
3381 static void
3382 wpi_stop(struct wpi_softc *sc)
3383 {
3384         WPI_LOCK(sc);
3385         wpi_stop_locked(sc);
3386         WPI_UNLOCK(sc);
3387 }
3388
3389 static void
3390 wpi_calib_timeout(void *arg)
3391 {
3392         struct wpi_softc *sc = arg;
3393         struct ifnet *ifp = sc->sc_ifp;
3394         struct ieee80211com *ic = ifp->if_l2com;
3395         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3396         int temp;
3397
3398         if (vap->iv_state != IEEE80211_S_RUN)
3399                 return;
3400
3401         /* update sensor data */
3402         temp = (int)WPI_READ(sc, WPI_TEMPERATURE);
3403         DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp));
3404
3405         wpi_power_calibration(sc, temp);
3406
3407         callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
3408 }
3409
3410 /*
3411  * This function is called periodically (every 60 seconds) to adjust output
3412  * power to temperature changes.
3413  */
3414 static void
3415 wpi_power_calibration(struct wpi_softc *sc, int temp)
3416 {
3417         struct ifnet *ifp = sc->sc_ifp;
3418         struct ieee80211com *ic = ifp->if_l2com;
3419         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3420
3421         /* sanity-check read value */
3422         if (temp < -260 || temp > 25) {
3423                 /* this can't be correct, ignore */
3424                 DPRINTFN(WPI_DEBUG_TEMP,
3425                     ("out-of-range temperature reported: %d\n", temp));
3426                 return;
3427         }
3428
3429         DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp));
3430
3431         /* adjust Tx power if need be */
3432         if (abs(temp - sc->temp) <= 6)
3433                 return;
3434
3435         sc->temp = temp;
3436
3437         if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) {
3438                 /* just warn, too bad for the automatic calibration... */
3439                 device_printf(sc->sc_dev,"could not adjust Tx power\n");
3440         }
3441 }
3442
3443 /**
3444  * Read the eeprom to find out what channels are valid for the given
3445  * band and update net80211 with what we find.
3446  */
3447 static void
3448 wpi_read_eeprom_channels(struct wpi_softc *sc, int n)
3449 {
3450         struct ifnet *ifp = sc->sc_ifp;
3451         struct ieee80211com *ic = ifp->if_l2com;
3452         const struct wpi_chan_band *band = &wpi_bands[n];
3453         struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND];
3454         struct ieee80211_channel *c;
3455         int chan, i, passive;
3456
3457         wpi_read_prom_data(sc, band->addr, channels,
3458             band->nchan * sizeof (struct wpi_eeprom_chan));
3459
3460         for (i = 0; i < band->nchan; i++) {
3461                 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) {
3462                         DPRINTFN(WPI_DEBUG_HW,
3463                             ("Channel Not Valid: %d, band %d\n",
3464                              band->chan[i],n));
3465                         continue;
3466                 }
3467
3468                 passive = 0;
3469                 chan = band->chan[i];
3470                 c = &ic->ic_channels[ic->ic_nchans++];
3471
3472                 /* is active scan allowed on this channel? */
3473                 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) {
3474                         passive = IEEE80211_CHAN_PASSIVE;
3475                 }
3476
3477                 if (n == 0) {   /* 2GHz band */
3478                         c->ic_ieee = chan;
3479                         c->ic_freq = ieee80211_ieee2mhz(chan,
3480                             IEEE80211_CHAN_2GHZ);
3481                         c->ic_flags = IEEE80211_CHAN_B | passive;
3482
3483                         c = &ic->ic_channels[ic->ic_nchans++];
3484                         c->ic_ieee = chan;
3485                         c->ic_freq = ieee80211_ieee2mhz(chan,
3486                             IEEE80211_CHAN_2GHZ);
3487                         c->ic_flags = IEEE80211_CHAN_G | passive;
3488
3489                 } else {        /* 5GHz band */
3490                         /*
3491                          * Some 3945ABG adapters support channels 7, 8, 11
3492                          * and 12 in the 2GHz *and* 5GHz bands.
3493                          * Because of limitations in our net80211(9) stack,
3494                          * we can't support these channels in 5GHz band.
3495                          * XXX not true; just need to map to proper frequency
3496                          */
3497                         if (chan <= 14)
3498                                 continue;
3499
3500                         c->ic_ieee = chan;
3501                         c->ic_freq = ieee80211_ieee2mhz(chan,
3502                             IEEE80211_CHAN_5GHZ);
3503                         c->ic_flags = IEEE80211_CHAN_A | passive;
3504                 }
3505
3506                 /* save maximum allowed power for this channel */
3507                 sc->maxpwr[chan] = channels[i].maxpwr;
3508
3509 #if 0
3510                 // XXX We can probably use this an get rid of maxpwr - ben 20070617
3511                 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr;
3512                 //ic->ic_channels[chan].ic_minpower...
3513                 //ic->ic_channels[chan].ic_maxregtxpower...
3514 #endif
3515
3516                 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d"
3517                     " passive=%d, offset %d\n", chan, c->ic_freq,
3518                     channels[i].flags, sc->maxpwr[chan],
3519                     (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0,
3520                     ic->ic_nchans));
3521         }
3522 }
3523
3524 static void
3525 wpi_read_eeprom_group(struct wpi_softc *sc, int n)
3526 {
3527         struct wpi_power_group *group = &sc->groups[n];
3528         struct wpi_eeprom_group rgroup;
3529         int i;
3530
3531         wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup,
3532             sizeof rgroup);
3533
3534         /* save power group information */
3535         group->chan   = rgroup.chan;
3536         group->maxpwr = rgroup.maxpwr;
3537         /* temperature at which the samples were taken */
3538         group->temp   = (int16_t)le16toh(rgroup.temp);
3539
3540         DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n,
3541                     group->chan, group->maxpwr, group->temp));
3542
3543         for (i = 0; i < WPI_SAMPLES_COUNT; i++) {
3544                 group->samples[i].index = rgroup.samples[i].index;
3545                 group->samples[i].power = rgroup.samples[i].power;
3546
3547                 DPRINTF(("\tsample %d: index=%d power=%d\n", i,
3548                             group->samples[i].index, group->samples[i].power));
3549         }
3550 }
3551
3552 /*
3553  * Update Tx power to match what is defined for channel `c'.
3554  */
3555 static int
3556 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async)
3557 {
3558         struct ifnet *ifp = sc->sc_ifp;
3559         struct ieee80211com *ic = ifp->if_l2com;
3560         struct wpi_power_group *group;
3561         struct wpi_cmd_txpower txpower;
3562         u_int chan;
3563         int i;
3564
3565         /* get channel number */
3566         chan = ieee80211_chan2ieee(ic, c);
3567
3568         /* find the power group to which this channel belongs */
3569         if (IEEE80211_IS_CHAN_5GHZ(c)) {
3570                 for (group = &sc->groups[1]; group < &sc->groups[4]; group++)
3571                         if (chan <= group->chan)
3572                                 break;
3573         } else
3574                 group = &sc->groups[0];
3575
3576         memset(&txpower, 0, sizeof txpower);
3577         txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1;
3578         txpower.channel = htole16(chan);
3579
3580         /* set Tx power for all OFDM and CCK rates */
3581         for (i = 0; i <= 11 ; i++) {
3582                 /* retrieve Tx power for this channel/rate combination */
3583                 int idx = wpi_get_power_index(sc, group, c,
3584                     wpi_ridx_to_rate[i]);
3585
3586                 txpower.rates[i].rate = wpi_ridx_to_plcp[i];
3587
3588                 if (IEEE80211_IS_CHAN_5GHZ(c)) {
3589                         txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx];
3590                         txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx];
3591                 } else {
3592                         txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx];
3593                         txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx];
3594                 }
3595                 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n",
3596                             chan, wpi_ridx_to_rate[i], idx));
3597         }
3598
3599         return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async);
3600 }
3601
3602 /*
3603  * Determine Tx power index for a given channel/rate combination.
3604  * This takes into account the regulatory information from EEPROM and the
3605  * current temperature.
3606  */
3607 static int
3608 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group,
3609     struct ieee80211_channel *c, int rate)
3610 {
3611 /* fixed-point arithmetic division using a n-bit fractional part */
3612 #define fdivround(a, b, n)      \
3613         ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
3614
3615 /* linear interpolation */
3616 #define interpolate(x, x1, y1, x2, y2, n)       \
3617         ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
3618
3619         struct ifnet *ifp = sc->sc_ifp;
3620         struct ieee80211com *ic = ifp->if_l2com;
3621         struct wpi_power_sample *sample;
3622         int pwr, idx;
3623         u_int chan;
3624
3625         /* get channel number */
3626         chan = ieee80211_chan2ieee(ic, c);
3627
3628         /* default power is group's maximum power - 3dB */
3629         pwr = group->maxpwr / 2;
3630
3631         /* decrease power for highest OFDM rates to reduce distortion */
3632         switch (rate) {
3633                 case 72:        /* 36Mb/s */
3634                         pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 :  5;
3635                         break;
3636                 case 96:        /* 48Mb/s */
3637                         pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10;
3638                         break;
3639                 case 108:       /* 54Mb/s */
3640                         pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12;
3641                         break;
3642         }
3643
3644         /* never exceed channel's maximum allowed Tx power */
3645         pwr = min(pwr, sc->maxpwr[chan]);
3646
3647         /* retrieve power index into gain tables from samples */
3648         for (sample = group->samples; sample < &group->samples[3]; sample++)
3649                 if (pwr > sample[1].power)
3650                         break;
3651         /* fixed-point linear interpolation using a 19-bit fractional part */
3652         idx = interpolate(pwr, sample[0].power, sample[0].index,
3653             sample[1].power, sample[1].index, 19);
3654
3655         /*
3656          *  Adjust power index based on current temperature
3657          *      - if colder than factory-calibrated: decreate output power
3658          *      - if warmer than factory-calibrated: increase output power
3659          */
3660         idx -= (sc->temp - group->temp) * 11 / 100;
3661
3662         /* decrease power for CCK rates (-5dB) */
3663         if (!WPI_RATE_IS_OFDM(rate))
3664                 idx += 10;
3665
3666         /* keep power index in a valid range */
3667         if (idx < 0)
3668                 return 0;
3669         if (idx > WPI_MAX_PWR_INDEX)
3670                 return WPI_MAX_PWR_INDEX;
3671         return idx;
3672
3673 #undef interpolate
3674 #undef fdivround
3675 }
3676
3677 /**
3678  * Called by net80211 framework to indicate that a scan
3679  * is starting. This function doesn't actually do the scan,
3680  * wpi_scan_curchan starts things off. This function is more
3681  * of an early warning from the framework we should get ready
3682  * for the scan.
3683  */
3684 static void
3685 wpi_scan_start(struct ieee80211com *ic)
3686 {
3687         struct wpi_softc *sc = ic->ic_softc;
3688
3689         WPI_LOCK(sc);
3690         wpi_set_led(sc, WPI_LED_LINK, 20, 2);
3691         WPI_UNLOCK(sc);
3692 }
3693
3694 /**
3695  * Called by the net80211 framework, indicates that the
3696  * scan has ended. If there is a scan in progress on the card
3697  * then it should be aborted.
3698  */
3699 static void
3700 wpi_scan_end(struct ieee80211com *ic)
3701 {
3702         /* XXX ignore */
3703 }
3704
3705 /**
3706  * Called by the net80211 framework to indicate to the driver
3707  * that the channel should be changed
3708  */
3709 static void
3710 wpi_set_channel(struct ieee80211com *ic)
3711 {
3712         struct wpi_softc *sc = ic->ic_softc;
3713         int error;
3714
3715         /*
3716          * Only need to set the channel in Monitor mode. AP scanning and auth
3717          * are already taken care of by their respective firmware commands.
3718          */
3719         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
3720                 WPI_LOCK(sc);
3721                 error = wpi_config(sc);
3722                 WPI_UNLOCK(sc);
3723                 if (error != 0)
3724                         device_printf(sc->sc_dev,
3725                             "error %d settting channel\n", error);
3726         }
3727 }
3728
3729 /**
3730  * Called by net80211 to indicate that we need to scan the current
3731  * channel. The channel is previously be set via the wpi_set_channel
3732  * callback.
3733  */
3734 static void
3735 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3736 {
3737         struct ieee80211vap *vap = ss->ss_vap;
3738         struct ieee80211com *ic = vap->iv_ic;
3739         struct wpi_softc *sc = ic->ic_softc;
3740
3741         WPI_LOCK(sc);
3742         if (wpi_scan(sc))
3743                 ieee80211_cancel_scan(vap);
3744         WPI_UNLOCK(sc);
3745 }
3746
3747 /**
3748  * Called by the net80211 framework to indicate
3749  * the minimum dwell time has been met, terminate the scan.
3750  * We don't actually terminate the scan as the firmware will notify
3751  * us when it's finished and we have no way to interrupt it.
3752  */
3753 static void
3754 wpi_scan_mindwell(struct ieee80211_scan_state *ss)
3755 {
3756         /* NB: don't try to abort scan; wait for firmware to finish */
3757 }
3758
3759 static void
3760 wpi_hwreset(void *arg, int pending)
3761 {
3762         struct wpi_softc *sc = arg;
3763
3764         WPI_LOCK(sc);
3765         wpi_init_locked(sc, 0);
3766         WPI_UNLOCK(sc);
3767 }
3768
3769 static void
3770 wpi_rfreset(void *arg, int pending)
3771 {
3772         struct wpi_softc *sc = arg;
3773
3774         WPI_LOCK(sc);
3775         wpi_rfkill_resume(sc);
3776         WPI_UNLOCK(sc);
3777 }
3778
3779 /*
3780  * Allocate DMA-safe memory for firmware transfer.
3781  */
3782 static int
3783 wpi_alloc_fwmem(struct wpi_softc *sc)
3784 {
3785         /* allocate enough contiguous space to store text and data */
3786         return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL,
3787             WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1,
3788             BUS_DMA_NOWAIT);
3789 }
3790
3791 static void
3792 wpi_free_fwmem(struct wpi_softc *sc)
3793 {
3794         wpi_dma_contig_free(&sc->fw_dma);
3795 }
3796
3797 /**
3798  * Called every second, wpi_watchdog used by the watch dog timer
3799  * to check that the card is still alive
3800  */
3801 static void
3802 wpi_watchdog(void *arg)
3803 {
3804         struct wpi_softc *sc = arg;
3805         struct ifnet *ifp = sc->sc_ifp;
3806         struct ieee80211com *ic = ifp->if_l2com;
3807         uint32_t tmp;
3808
3809         DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n"));
3810
3811         if (sc->flags & WPI_FLAG_HW_RADIO_OFF) {
3812                 /* No need to lock firmware memory */
3813                 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
3814
3815                 if ((tmp & 0x1) == 0) {
3816                         /* Radio kill switch is still off */
3817                         callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
3818                         return;
3819                 }
3820
3821                 device_printf(sc->sc_dev, "Hardware Switch Enabled\n");
3822                 ieee80211_runtask(ic, &sc->sc_radiotask);
3823                 return;
3824         }
3825
3826         if (sc->sc_tx_timer > 0) {
3827                 if (--sc->sc_tx_timer == 0) {
3828                         device_printf(sc->sc_dev,"device timeout\n");
3829 #if defined(__DragonFly__)
3830                         IFNET_STAT_INC(ifp, oerrors, 1);
3831 #else
3832                         if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
3833 #endif
3834                         ieee80211_runtask(ic, &sc->sc_restarttask);
3835                 }
3836         }
3837         if (sc->sc_scan_timer > 0) {
3838                 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3839                 if (--sc->sc_scan_timer == 0 && vap != NULL) {
3840                         device_printf(sc->sc_dev,"scan timeout\n");
3841                         ieee80211_cancel_scan(vap);
3842                         ieee80211_runtask(ic, &sc->sc_restarttask);
3843                 }
3844         }
3845
3846 #if defined(__DragonFly__)
3847         if (ifp->if_flags & IFF_RUNNING)
3848                 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
3849 #else
3850         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
3851                 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
3852 #endif
3853 }
3854
3855 #if defined(__DragonFly__)
3856 static int
3857 wpi_sleep(struct wpi_softc *sc, void *wchan,
3858         int flags, const char *wmsg, int timo)
3859 {
3860         int iws;
3861         int error;
3862         iws = wlan_is_serialized();
3863         if (iws)
3864                 wlan_serialize_exit();
3865         error = lksleep(wchan, &sc->sc_mtx, flags, wmsg, timo);
3866         if (iws)
3867                 wlan_serialize_enter();
3868         return error;
3869 }
3870 #endif
3871
3872
3873 #ifdef WPI_DEBUG
3874 static const char *wpi_cmd_str(int cmd)
3875 {
3876         switch (cmd) {
3877         case WPI_DISABLE_CMD:   return "WPI_DISABLE_CMD";
3878         case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE";
3879         case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE";
3880         case WPI_CMD_SET_WME:   return "WPI_CMD_SET_WME";
3881         case WPI_CMD_TSF:       return "WPI_CMD_TSF";
3882         case WPI_CMD_ADD_NODE:  return "WPI_CMD_ADD_NODE";
3883         case WPI_CMD_TX_DATA:   return "WPI_CMD_TX_DATA";
3884         case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP";
3885         case WPI_CMD_SET_LED:   return "WPI_CMD_SET_LED";
3886         case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE";
3887         case WPI_CMD_SCAN:      return "WPI_CMD_SCAN";
3888         case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON";
3889         case WPI_CMD_TXPOWER:   return "WPI_CMD_TXPOWER";
3890         case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH";
3891
3892         default:
3893                 KASSERT(1, ("Unknown Command: %d", cmd));
3894                 return "UNKNOWN CMD";   /* Make the compiler happy */
3895         }
3896 }
3897 #endif
3898
3899 MODULE_DEPEND(wpi, pci,  1, 1, 1);
3900 MODULE_DEPEND(wpi, wlan, 1, 1, 1);
3901 MODULE_DEPEND(wpi, firmware, 1, 1, 1);