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_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 638         ic->ic_opmode = IEEE80211_M_STA;        /* default to BSS mode */
 639
 640         /* set device capabilities */
 641         ic->ic_caps =
 642                   IEEE80211_C_STA               /* station mode supported */
 643                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 644                 | IEEE80211_C_TXPMGT            /* tx power management */
 645                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 646                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 647                 | IEEE80211_C_WPA               /* 802.11i */
 648 /* XXX looks like WME is partly supported? */
 649 #if 0
 650                 | IEEE80211_C_IBSS              /* IBSS mode support */
 651                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 652                 | IEEE80211_C_WME               /* 802.11e */
 653                 | IEEE80211_C_HOSTAP            /* Host access point mode */
 654 #endif
 655                 ;
 656
 657         /*
 658          * Read in the eeprom and also setup the channels for
 659          * net80211. We don't set the rates as net80211 does this for us
 660          */
 661         wpi_read_eeprom(sc, macaddr);
 662
 663         if (bootverbose || WPI_DEBUG_SET) {
 664             device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain);
 665             device_printf(sc->sc_dev, "Hardware Type: %c\n",
 666                           sc->type > 1 ? 'B': '?');
 667             device_printf(sc->sc_dev, "Hardware Revision: %c\n",
 668                           ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?');
 669             device_printf(sc->sc_dev, "SKU %s support 802.11a\n",
 670                           supportsa ? "does" : "does not");
 671
 672             /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check
 673                what sc->rev really represents - benjsc 20070615 */
 674         }
 675
 676         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 677         ifp->if_softc = sc;
 678         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 679         ifp->if_init = wpi_init;
 680         ifp->if_ioctl = wpi_ioctl;
 681         ifp->if_start = wpi_start;
 682 #if defined(__DragonFly__)
 683         ifq_set_maxlen(&ifp->if_snd, ifqmaxlen);
 684 #else
 685         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 686         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 687         IFQ_SET_READY(&ifp->if_snd);
 688 #endif
 689
 690         /* ieee80211_ifattach() assumes that WLAN serializer is held */
 691         wlan_serialize_enter();
 692         ieee80211_ifattach(ic, macaddr);
 693         wlan_serialize_exit();
 694         /* override default methods */
 695         ic->ic_raw_xmit = wpi_raw_xmit;
 696         ic->ic_wme.wme_update = wpi_wme_update;
 697         ic->ic_scan_start = wpi_scan_start;
 698         ic->ic_scan_end = wpi_scan_end;
 699         ic->ic_set_channel = wpi_set_channel;
 700         ic->ic_scan_curchan = wpi_scan_curchan;
 701         ic->ic_scan_mindwell = wpi_scan_mindwell;
 702
 703         ic->ic_vap_create = wpi_vap_create;
 704         ic->ic_vap_delete = wpi_vap_delete;
 705
 706         ieee80211_radiotap_attach(ic,
 707             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 708                 WPI_TX_RADIOTAP_PRESENT,
 709             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 710                 WPI_RX_RADIOTAP_PRESENT);
 711
 712         /*
 713          * Hook our interrupt after all initialization is complete.
 714          */
 715 #if defined (__DragonFly__)
 716         error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE,
 717             wpi_intr, sc, &sc->sc_ih, &wlan_global_serializer);
 718 #else
 719         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE,
 720             NULL, wpi_intr, sc, &sc->sc_ih);
 721 #endif
 722         if (error != 0) {
 723                 device_printf(dev, "could not set up interrupt\n");
 724                 goto fail;
 725         }
 726
 727         if (bootverbose)
 728                 ieee80211_announce(ic);
 729 #ifdef XXX_DEBUG
 730         ieee80211_announce_channels(ic);
 731 #endif
 732         return 0;
 733
 734 fail:   wpi_detach(dev);
 735         return ENXIO;
 736 }
 737
 738 static int
 739 wpi_detach(device_t dev)
 740 {
 741         struct wpi_softc *sc = device_get_softc(dev);
 742         struct ifnet *ifp = sc->sc_ifp;
 743         struct ieee80211com *ic;
 744         int ac;
 745
 746         if (sc->irq != NULL)
 747                 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 748
 749         if (ifp != NULL) {
 750                 ic = ifp->if_l2com;
 751
 752                 ieee80211_draintask(ic, &sc->sc_restarttask);
 753                 ieee80211_draintask(ic, &sc->sc_radiotask);
 754                 wpi_stop(sc);
 755                 callout_drain(&sc->watchdog_to);
 756                 callout_drain(&sc->calib_to);
 757                 ieee80211_ifdetach(ic);
 758         }
 759
 760         WPI_LOCK(sc);
 761         if (sc->txq[0].data_dmat) {
 762                 for (ac = 0; ac < WME_NUM_AC; ac++)
 763                         wpi_free_tx_ring(sc, &sc->txq[ac]);
 764
 765                 wpi_free_tx_ring(sc, &sc->cmdq);
 766                 wpi_free_rx_ring(sc, &sc->rxq);
 767                 wpi_free_shared(sc);
 768         }
 769
 770         if (sc->fw_fp != NULL) {
 771                 wpi_unload_firmware(sc);
 772         }
 773
 774         if (sc->fw_dma.tag)
 775                 wpi_free_fwmem(sc);
 776         WPI_UNLOCK(sc);
 777
 778         if (sc->irq != NULL)
 779                 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
 780                     sc->irq);
 781         if (sc->mem != NULL)
 782                 bus_release_resource(dev, SYS_RES_MEMORY,
 783                     rman_get_rid(sc->mem), sc->mem);
 784
 785         if (ifp != NULL)
 786                 if_free(ifp);
 787
 788         WPI_LOCK_DESTROY(sc);
 789
 790         return 0;
 791 }
 792
 793 static struct ieee80211vap *
 794 wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 795     enum ieee80211_opmode opmode, int flags,
 796     const uint8_t bssid[IEEE80211_ADDR_LEN],
 797     const uint8_t mac[IEEE80211_ADDR_LEN])
 798 {
 799         struct wpi_vap *wvp;
 800         struct ieee80211vap *vap;
 801
 802         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 803                 return NULL;
 804         wvp = (struct wpi_vap *) kmalloc(sizeof(struct wpi_vap),
 805             M_80211_VAP, M_INTWAIT | M_ZERO);
 806         if (wvp == NULL)
 807                 return NULL;
 808         vap = &wvp->vap;
 809         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 810         /* override with driver methods */
 811         wvp->newstate = vap->iv_newstate;
 812         vap->iv_newstate = wpi_newstate;
 813
 814         ieee80211_ratectl_init(vap);
 815         /* complete setup */
 816         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 817         ic->ic_opmode = opmode;
 818         return vap;
 819 }
 820
 821 static void
 822 wpi_vap_delete(struct ieee80211vap *vap)
 823 {
 824         struct wpi_vap *wvp = WPI_VAP(vap);
 825
 826         ieee80211_ratectl_deinit(vap);
 827         ieee80211_vap_detach(vap);
 828         kfree(wvp, M_80211_VAP);
 829 }
 830
 831 static void
 832 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
 833 {
 834         if (error != 0)
 835                 return;
 836
 837         KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
 838
 839         *(bus_addr_t *)arg = segs[0].ds_addr;
 840 }
 841
 842 /*
 843  * Allocates a contiguous block of dma memory of the requested size and
 844  * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217,
 845  * allocations greater than 4096 may fail. Hence if the requested alignment is
 846  * greater we allocate 'alignment' size extra memory and shift the vaddr and
 847  * paddr after the dma load. This bypasses the problem at the cost of a little
 848  * more memory.
 849  */
 850 static int
 851 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma,
 852     void **kvap, bus_size_t size, bus_size_t alignment, int flags)
 853 {
 854         int error;
 855         bus_size_t align;
 856         bus_size_t reqsize;
 857
 858         DPRINTFN(WPI_DEBUG_DMA,
 859             ("Size: %zd - alignment %zd\n", size, alignment));
 860
 861         dma->size = size;
 862         dma->tag = NULL;
 863
 864         if (alignment > 4096) {
 865                 align = PAGE_SIZE;
 866                 reqsize = size + alignment;
 867         } else {
 868                 align = alignment;
 869                 reqsize = size;
 870         }
 871 #if defined(__DragonFly__)
 872         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align,
 873             0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
 874             NULL, NULL, reqsize,
 875             1, reqsize, flags,
 876             &dma->tag);
 877 #else
 878         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align,
 879             0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
 880             NULL, NULL, reqsize,
 881             1, reqsize, flags,
 882             NULL, NULL, &dma->tag);
 883 #endif
 884         if (error != 0) {
 885                 device_printf(sc->sc_dev,
 886                     "could not create shared page DMA tag\n");
 887                 goto fail;
 888         }
 889         error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start,
 890             flags | BUS_DMA_ZERO, &dma->map);
 891         if (error != 0) {
 892                 device_printf(sc->sc_dev,
 893                     "could not allocate shared page DMA memory\n");
 894                 goto fail;
 895         }
 896
 897         error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start,
 898             reqsize,  wpi_dma_map_addr, &dma->paddr_start, flags);
 899
 900         /* Save the original pointers so we can free all the memory */
 901         dma->paddr = dma->paddr_start;
 902         dma->vaddr = dma->vaddr_start;
 903
 904         /*
 905          * Check the alignment and increment by 4096 until we get the
 906          * requested alignment. Fail if can't obtain the alignment
 907          * we requested.
 908          */
 909         if ((dma->paddr & (alignment -1 )) != 0) {
 910                 int i;
 911
 912                 for (i = 0; i < alignment / 4096; i++) {
 913                         if ((dma->paddr & (alignment - 1 )) == 0)
 914                                 break;
 915                         dma->paddr += 4096;
 916                         dma->vaddr += 4096;
 917                 }
 918                 if (i == alignment / 4096) {
 919                         device_printf(sc->sc_dev,
 920                             "alignment requirement was not satisfied\n");
 921                         goto fail;
 922                 }
 923         }
 924
 925         if (error != 0) {
 926                 device_printf(sc->sc_dev,
 927                     "could not load shared page DMA map\n");
 928                 goto fail;
 929         }
 930
 931         if (kvap != NULL)
 932                 *kvap = dma->vaddr;
 933
 934         return 0;
 935
 936 fail:
 937         wpi_dma_contig_free(dma);
 938         return error;
 939 }
 940
 941 static void
 942 wpi_dma_contig_free(struct wpi_dma_info *dma)
 943 {
 944         if (dma->tag) {
 945                 if (dma->vaddr_start != NULL) {
 946                         if (dma->paddr_start != 0) {
 947                                 bus_dmamap_sync(dma->tag, dma->map,
 948                                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 949                                 bus_dmamap_unload(dma->tag, dma->map);
 950                         }
 951                         bus_dmamem_free(dma->tag, dma->vaddr_start, dma->map);
 952                 }
 953                 bus_dma_tag_destroy(dma->tag);
 954         }
 955 }
 956
 957 /*
 958  * Allocate a shared page between host and NIC.
 959  */
 960 static int
 961 wpi_alloc_shared(struct wpi_softc *sc)
 962 {
 963         int error;
 964
 965         error = wpi_dma_contig_alloc(sc, &sc->shared_dma,
 966             (void **)&sc->shared, sizeof (struct wpi_shared),
 967             PAGE_SIZE,
 968             BUS_DMA_NOWAIT);
 969
 970         if (error != 0) {
 971                 device_printf(sc->sc_dev,
 972                     "could not allocate shared area DMA memory\n");
 973         }
 974
 975         return error;
 976 }
 977
 978 static void
 979 wpi_free_shared(struct wpi_softc *sc)
 980 {
 981         wpi_dma_contig_free(&sc->shared_dma);
 982 }
 983
 984 static int
 985 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
 986 {
 987
 988         int i, error;
 989
 990         ring->cur = 0;
 991
 992         error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
 993             (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t),
 994             WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
 995
 996         if (error != 0) {
 997                 device_printf(sc->sc_dev,
 998                     "%s: could not allocate rx ring DMA memory, error %d\n",
 999                     __func__, error);
1000                 goto fail;
1001         }
1002
1003 #if defined(__DragonFly__)
1004         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1005             BUS_SPACE_MAXADDR_32BIT,
1006             BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
1007             MJUMPAGESIZE, BUS_DMA_NOWAIT, &ring->data_dmat);
1008 #else
1009         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1010             BUS_SPACE_MAXADDR_32BIT,
1011             BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
1012             MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
1013 #endif
1014         if (error != 0) {
1015                 device_printf(sc->sc_dev,
1016                     "%s: bus_dma_tag_create_failed, error %d\n",
1017                     __func__, error);
1018                 goto fail;
1019         }
1020
1021         /*
1022          * Setup Rx buffers.
1023          */
1024         for (i = 0; i < WPI_RX_RING_COUNT; i++) {
1025                 struct wpi_rx_data *data = &ring->data[i];
1026                 struct mbuf *m;
1027                 bus_addr_t paddr;
1028
1029                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
1030                 if (error != 0) {
1031                         device_printf(sc->sc_dev,
1032                             "%s: bus_dmamap_create failed, error %d\n",
1033                             __func__, error);
1034                         goto fail;
1035                 }
1036                 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1037                 if (m == NULL) {
1038                         device_printf(sc->sc_dev,
1039                            "%s: could not allocate rx mbuf\n", __func__);
1040                         error = ENOMEM;
1041                         goto fail;
1042                 }
1043                 /* map page */
1044                 error = bus_dmamap_load(ring->data_dmat, data->map,
1045                     mtod(m, caddr_t), MJUMPAGESIZE,
1046                     wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1047                 if (error != 0 && error != EFBIG) {
1048                         device_printf(sc->sc_dev,
1049                             "%s: bus_dmamap_load failed, error %d\n",
1050                             __func__, error);
1051                         m_freem(m);
1052                         error = ENOMEM; /* XXX unique code */
1053                         goto fail;
1054                 }
1055                 bus_dmamap_sync(ring->data_dmat, data->map,
1056                     BUS_DMASYNC_PREWRITE);
1057
1058                 data->m = m;
1059                 ring->desc[i] = htole32(paddr);
1060         }
1061         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
1062             BUS_DMASYNC_PREWRITE);
1063         return 0;
1064 fail:
1065         wpi_free_rx_ring(sc, ring);
1066         return error;
1067 }
1068
1069 static void
1070 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
1071 {
1072         int ntries;
1073
1074         wpi_mem_lock(sc);
1075
1076         WPI_WRITE(sc, WPI_RX_CONFIG, 0);
1077
1078         for (ntries = 0; ntries < 100; ntries++) {
1079                 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE)
1080                         break;
1081                 DELAY(10);
1082         }
1083
1084         wpi_mem_unlock(sc);
1085
1086 #ifdef WPI_DEBUG
1087         if (ntries == 100 && wpi_debug > 0)
1088                 device_printf(sc->sc_dev, "timeout resetting Rx ring\n");
1089 #endif
1090
1091         ring->cur = 0;
1092 }
1093
1094 static void
1095 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
1096 {
1097         int i;
1098
1099         wpi_dma_contig_free(&ring->desc_dma);
1100
1101         for (i = 0; i < WPI_RX_RING_COUNT; i++) {
1102                 struct wpi_rx_data *data = &ring->data[i];
1103
1104                 if (data->m != NULL) {
1105                         bus_dmamap_sync(ring->data_dmat, data->map,
1106                             BUS_DMASYNC_POSTREAD);
1107                         bus_dmamap_unload(ring->data_dmat, data->map);
1108                         m_freem(data->m);
1109                 }
1110                 if (data->map != NULL)
1111                         bus_dmamap_destroy(ring->data_dmat, data->map);
1112         }
1113 }
1114
1115 static int
1116 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count,
1117         int qid)
1118 {
1119         struct wpi_tx_data *data;
1120         int i, error;
1121
1122         ring->qid = qid;
1123         ring->count = count;
1124         ring->queued = 0;
1125         ring->cur = 0;
1126         ring->data = NULL;
1127
1128         error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
1129                 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc),
1130                 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
1131
1132         if (error != 0) {
1133             device_printf(sc->sc_dev, "could not allocate tx dma memory\n");
1134             goto fail;
1135         }
1136
1137         /* update shared page with ring's base address */
1138         sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr);
1139
1140         error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
1141                 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN,
1142                 BUS_DMA_NOWAIT);
1143
1144         if (error != 0) {
1145                 device_printf(sc->sc_dev,
1146                     "could not allocate tx command DMA memory\n");
1147                 goto fail;
1148         }
1149
1150         ring->data = kmalloc(count * sizeof (struct wpi_tx_data), M_DEVBUF,
1151             M_INTWAIT | M_ZERO);
1152         if (ring->data == NULL) {
1153                 device_printf(sc->sc_dev,
1154                     "could not allocate tx data slots\n");
1155                 goto fail;
1156         }
1157
1158 #if defined(__DragonFly__)
1159         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1160             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
1161             WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT,
1162             &ring->data_dmat);
1163 #else
1164         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
1165             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
1166             WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL,
1167             &ring->data_dmat);
1168 #endif
1169         if (error != 0) {
1170                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
1171                 goto fail;
1172         }
1173
1174         for (i = 0; i < count; i++) {
1175                 data = &ring->data[i];
1176
1177                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
1178                 if (error != 0) {
1179                         device_printf(sc->sc_dev,
1180                             "could not create tx buf DMA map\n");
1181                         goto fail;
1182                 }
1183                 bus_dmamap_sync(ring->data_dmat, data->map,
1184                     BUS_DMASYNC_PREWRITE);
1185         }
1186
1187         return 0;
1188
1189 fail:
1190         wpi_free_tx_ring(sc, ring);
1191         return error;
1192 }
1193
1194 static void
1195 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
1196 {
1197         struct wpi_tx_data *data;
1198         int i, ntries;
1199
1200         wpi_mem_lock(sc);
1201
1202         WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0);
1203         for (ntries = 0; ntries < 100; ntries++) {
1204                 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid))
1205                         break;
1206                 DELAY(10);
1207         }
1208 #ifdef WPI_DEBUG
1209         if (ntries == 100 && wpi_debug > 0)
1210                 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n",
1211                     ring->qid);
1212 #endif
1213         wpi_mem_unlock(sc);
1214
1215         for (i = 0; i < ring->count; i++) {
1216                 data = &ring->data[i];
1217
1218                 if (data->m != NULL) {
1219                         bus_dmamap_unload(ring->data_dmat, data->map);
1220                         m_freem(data->m);
1221                         data->m = NULL;
1222                 }
1223         }
1224
1225         ring->queued = 0;
1226         ring->cur = 0;
1227 }
1228
1229 static void
1230 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
1231 {
1232         struct wpi_tx_data *data;
1233         int i;
1234
1235         wpi_dma_contig_free(&ring->desc_dma);
1236         wpi_dma_contig_free(&ring->cmd_dma);
1237
1238         if (ring->data != NULL) {
1239                 for (i = 0; i < ring->count; i++) {
1240                         data = &ring->data[i];
1241
1242                         if (data->m != NULL) {
1243                                 bus_dmamap_sync(ring->data_dmat, data->map,
1244                                     BUS_DMASYNC_POSTWRITE);
1245                                 bus_dmamap_unload(ring->data_dmat, data->map);
1246                                 m_freem(data->m);
1247                                 data->m = NULL;
1248                         }
1249                 }
1250                 kfree(ring->data, M_DEVBUF);
1251         }
1252
1253         if (ring->data_dmat != NULL)
1254                 bus_dma_tag_destroy(ring->data_dmat);
1255 }
1256
1257 static int
1258 wpi_shutdown(device_t dev)
1259 {
1260         struct wpi_softc *sc = device_get_softc(dev);
1261
1262         WPI_LOCK(sc);
1263         wpi_stop_locked(sc);
1264         wpi_unload_firmware(sc);
1265         WPI_UNLOCK(sc);
1266
1267         return 0;
1268 }
1269
1270 static int
1271 wpi_suspend(device_t dev)
1272 {
1273         struct wpi_softc *sc = device_get_softc(dev);
1274         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
1275
1276         ieee80211_suspend_all(ic);
1277         return 0;
1278 }
1279
1280 static int
1281 wpi_resume(device_t dev)
1282 {
1283         struct wpi_softc *sc = device_get_softc(dev);
1284         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
1285
1286         pci_write_config(dev, 0x41, 0, 1);
1287
1288         ieee80211_resume_all(ic);
1289         return 0;
1290 }
1291
1292 /**
1293  * Called by net80211 when ever there is a change to 80211 state machine
1294  */
1295 static int
1296 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1297 {
1298         struct wpi_vap *wvp = WPI_VAP(vap);
1299         struct ieee80211com *ic = vap->iv_ic;
1300         struct ifnet *ifp = ic->ic_ifp;
1301         struct wpi_softc *sc = ifp->if_softc;
1302         int error;
1303
1304         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
1305                 ieee80211_state_name[vap->iv_state],
1306                 ieee80211_state_name[nstate], sc->flags));
1307
1308         IEEE80211_UNLOCK(ic);
1309         WPI_LOCK(sc);
1310         if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) {
1311                 /*
1312                  * On !INIT -> SCAN transitions, we need to clear any possible
1313                  * knowledge about associations.
1314                  */
1315                 error = wpi_config(sc);
1316                 if (error != 0) {
1317                         device_printf(sc->sc_dev,
1318                             "%s: device config failed, error %d\n",
1319                             __func__, error);
1320                 }
1321         }
1322         if (nstate == IEEE80211_S_AUTH ||
1323             (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) {
1324                 /*
1325                  * The node must be registered in the firmware before auth.
1326                  * Also the associd must be cleared on RUN -> ASSOC
1327                  * transitions.
1328                  */
1329                 error = wpi_auth(sc, vap);
1330                 if (error != 0) {
1331                         device_printf(sc->sc_dev,
1332                             "%s: could not move to auth state, error %d\n",
1333                             __func__, error);
1334                 }
1335         }
1336         if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
1337                 error = wpi_run(sc, vap);
1338                 if (error != 0) {
1339                         device_printf(sc->sc_dev,
1340                             "%s: could not move to run state, error %d\n",
1341                             __func__, error);
1342                 }
1343         }
1344         if (nstate == IEEE80211_S_RUN) {
1345                 /* RUN -> RUN transition; just restart the timers */
1346                 wpi_calib_timeout(sc);
1347                 /* XXX split out rate control timer */
1348         }
1349         WPI_UNLOCK(sc);
1350         IEEE80211_LOCK(ic);
1351         return wvp->newstate(vap, nstate, arg);
1352 }
1353
1354 /*
1355  * Grab exclusive access to NIC memory.
1356  */
1357 static void
1358 wpi_mem_lock(struct wpi_softc *sc)
1359 {
1360         int ntries;
1361         uint32_t tmp;
1362
1363         tmp = WPI_READ(sc, WPI_GPIO_CTL);
1364         WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC);
1365
1366         /* spin until we actually get the lock */
1367         for (ntries = 0; ntries < 100; ntries++) {
1368                 if ((WPI_READ(sc, WPI_GPIO_CTL) &
1369                         (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK)
1370                         break;
1371                 DELAY(10);
1372         }
1373         if (ntries == 100)
1374                 device_printf(sc->sc_dev, "could not lock memory\n");
1375 }
1376
1377 /*
1378  * Release lock on NIC memory.
1379  */
1380 static void
1381 wpi_mem_unlock(struct wpi_softc *sc)
1382 {
1383         uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL);
1384         WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC);
1385 }
1386
1387 static uint32_t
1388 wpi_mem_read(struct wpi_softc *sc, uint16_t addr)
1389 {
1390         WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr);
1391         return WPI_READ(sc, WPI_READ_MEM_DATA);
1392 }
1393
1394 static void
1395 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data)
1396 {
1397         WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr);
1398         WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data);
1399 }
1400
1401 static void
1402 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr,
1403     const uint32_t *data, int wlen)
1404 {
1405         for (; wlen > 0; wlen--, data++, addr+=4)
1406                 wpi_mem_write(sc, addr, *data);
1407 }
1408
1409 /*
1410  * Read data from the EEPROM.  We access EEPROM through the MAC instead of
1411  * using the traditional bit-bang method. Data is read up until len bytes have
1412  * been obtained.
1413  */
1414 static uint16_t
1415 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len)
1416 {
1417         int ntries;
1418         uint32_t val;
1419         uint8_t *out = data;
1420
1421         wpi_mem_lock(sc);
1422
1423         for (; len > 0; len -= 2, addr++) {
1424                 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2);
1425
1426                 for (ntries = 0; ntries < 10; ntries++) {
1427                         if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY)
1428                                 break;
1429                         DELAY(5);
1430                 }
1431
1432                 if (ntries == 10) {
1433                         device_printf(sc->sc_dev, "could not read EEPROM\n");
1434                         return ETIMEDOUT;
1435                 }
1436
1437                 *out++= val >> 16;
1438                 if (len > 1)
1439                         *out ++= val >> 24;
1440         }
1441
1442         wpi_mem_unlock(sc);
1443
1444         return 0;
1445 }
1446
1447 /*
1448  * The firmware text and data segments are transferred to the NIC using DMA.
1449  * The driver just copies the firmware into DMA-safe memory and tells the NIC
1450  * where to find it.  Once the NIC has copied the firmware into its internal
1451  * memory, we can free our local copy in the driver.
1452  */
1453 static int
1454 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size)
1455 {
1456         int error, ntries;
1457
1458         DPRINTFN(WPI_DEBUG_HW,("Loading microcode  size 0x%x\n", size));
1459
1460         size /= sizeof(uint32_t);
1461
1462         wpi_mem_lock(sc);
1463
1464         wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE,
1465             (const uint32_t *)fw, size);
1466
1467         wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0);
1468         wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT);
1469         wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size);
1470
1471         /* run microcode */
1472         wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN);
1473
1474         /* wait while the adapter is busy copying the firmware */
1475         for (error = 0, ntries = 0; ntries < 1000; ntries++) {
1476                 uint32_t status = WPI_READ(sc, WPI_TX_STATUS);
1477                 DPRINTFN(WPI_DEBUG_HW,
1478                     ("firmware status=0x%x, val=0x%x, result=0x%x\n", status,
1479                      WPI_TX_IDLE(6), status & WPI_TX_IDLE(6)));
1480                 if (status & WPI_TX_IDLE(6)) {
1481                         DPRINTFN(WPI_DEBUG_HW,
1482                             ("Status Match! - ntries = %d\n", ntries));
1483                         break;
1484                 }
1485                 DELAY(10);
1486         }
1487         if (ntries == 1000) {
1488                 device_printf(sc->sc_dev, "timeout transferring firmware\n");
1489                 error = ETIMEDOUT;
1490         }
1491
1492         /* start the microcode executing */
1493         wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE);
1494
1495         wpi_mem_unlock(sc);
1496
1497         return (error);
1498 }
1499
1500 static void
1501 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc,
1502         struct wpi_rx_data *data)
1503 {
1504         struct ifnet *ifp = sc->sc_ifp;
1505         struct ieee80211com *ic = ifp->if_l2com;
1506         struct wpi_rx_ring *ring = &sc->rxq;
1507         struct wpi_rx_stat *stat;
1508         struct wpi_rx_head *head;
1509         struct wpi_rx_tail *tail;
1510         struct ieee80211_node *ni;
1511         struct mbuf *m, *mnew;
1512         bus_addr_t paddr;
1513         int error;
1514
1515         stat = (struct wpi_rx_stat *)(desc + 1);
1516
1517         if (stat->len > WPI_STAT_MAXLEN) {
1518                 device_printf(sc->sc_dev, "invalid rx statistic header\n");
1519 #if defined(__DragonFly__)
1520                 IFNET_STAT_INC(ifp, ierrors, 1);
1521 #else
1522                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1523 #endif
1524                 return;
1525         }
1526
1527         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
1528         head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len);
1529         tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len));
1530
1531         DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d "
1532             "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len),
1533             le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan,
1534             (uintmax_t)le64toh(tail->tstamp)));
1535
1536         /* discard Rx frames with bad CRC early */
1537         if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
1538                 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__,
1539                     le32toh(tail->flags)));
1540 #if defined(__DragonFly__)
1541                 IFNET_STAT_INC(ifp, ierrors, 1);
1542 #else
1543                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1544 #endif
1545                 return;
1546         }
1547         if (le16toh(head->len) < sizeof (struct ieee80211_frame)) {
1548                 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__,
1549                     le16toh(head->len)));
1550 #if defined(__DragonFly__)
1551                 IFNET_STAT_INC(ifp, ierrors, 1);
1552 #else
1553                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1554 #endif
1555                 return;
1556         }
1557
1558         /* XXX don't need mbuf, just dma buffer */
1559         mnew = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1560         if (mnew == NULL) {
1561                 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n",
1562                     __func__));
1563 #if defined(__DragonFly__)
1564                 IFNET_STAT_INC(ifp, ierrors, 1);
1565 #else
1566                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1567 #endif
1568                 return;
1569         }
1570         bus_dmamap_unload(ring->data_dmat, data->map);
1571
1572         error = bus_dmamap_load(ring->data_dmat, data->map,
1573             mtod(mnew, caddr_t), MJUMPAGESIZE,
1574             wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1575         if (error != 0 && error != EFBIG) {
1576                 device_printf(sc->sc_dev,
1577                     "%s: bus_dmamap_load failed, error %d\n", __func__, error);
1578                 m_freem(mnew);
1579 #if defined(__DragonFly__)
1580                 IFNET_STAT_INC(ifp, ierrors, 1);
1581 #else
1582                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1583 #endif
1584                 return;
1585         }
1586         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1587
1588         /* finalize mbuf and swap in new one */
1589         m = data->m;
1590         m->m_pkthdr.rcvif = ifp;
1591         m->m_data = (caddr_t)(head + 1);
1592         m->m_pkthdr.len = m->m_len = le16toh(head->len);
1593
1594         data->m = mnew;
1595         /* update Rx descriptor */
1596         ring->desc[ring->cur] = htole32(paddr);
1597
1598         if (ieee80211_radiotap_active(ic)) {
1599                 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap;
1600
1601                 tap->wr_flags = 0;
1602                 tap->wr_chan_freq =
1603                         htole16(ic->ic_channels[head->chan].ic_freq);
1604                 tap->wr_chan_flags =
1605                         htole16(ic->ic_channels[head->chan].ic_flags);
1606                 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET);
1607                 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise);
1608                 tap->wr_tsft = tail->tstamp;
1609                 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf;
1610                 switch (head->rate) {
1611                 /* CCK rates */
1612                 case  10: tap->wr_rate =   2; break;
1613                 case  20: tap->wr_rate =   4; break;
1614                 case  55: tap->wr_rate =  11; break;
1615                 case 110: tap->wr_rate =  22; break;
1616                 /* OFDM rates */
1617                 case 0xd: tap->wr_rate =  12; break;
1618                 case 0xf: tap->wr_rate =  18; break;
1619                 case 0x5: tap->wr_rate =  24; break;
1620                 case 0x7: tap->wr_rate =  36; break;
1621                 case 0x9: tap->wr_rate =  48; break;
1622                 case 0xb: tap->wr_rate =  72; break;
1623                 case 0x1: tap->wr_rate =  96; break;
1624                 case 0x3: tap->wr_rate = 108; break;
1625                 /* unknown rate: should not happen */
1626                 default:  tap->wr_rate =   0;
1627                 }
1628                 if (le16toh(head->flags) & 0x4)
1629                         tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
1630         }
1631
1632         WPI_UNLOCK(sc);
1633
1634         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1635         if (ni != NULL) {
1636                 (void) ieee80211_input(ni, m, stat->rssi, 0);
1637                 ieee80211_free_node(ni);
1638         } else
1639                 (void) ieee80211_input_all(ic, m, stat->rssi, 0);
1640
1641         WPI_LOCK(sc);
1642 }
1643
1644 static void
1645 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
1646 {
1647         struct ifnet *ifp = sc->sc_ifp;
1648         struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3];
1649         struct wpi_tx_data *txdata = &ring->data[desc->idx];
1650         struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1);
1651         struct ieee80211_node *ni = txdata->ni;
1652         struct ieee80211vap *vap = ni->ni_vap;
1653         int retrycnt = 0;
1654
1655         DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d "
1656             "rate=%x duration=%d status=%x\n", desc->qid, desc->idx,
1657             stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration),
1658             le32toh(stat->status)));
1659
1660         /*
1661          * Update rate control statistics for the node.
1662          * XXX we should not count mgmt frames since they're always sent at
1663          * the lowest available bit-rate.
1664          * XXX frames w/o ACK shouldn't be used either
1665          */
1666         if (stat->ntries > 0) {
1667                 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries));
1668                 retrycnt = 1;
1669         }
1670         ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS,
1671             &retrycnt, NULL);
1672
1673         /* XXX oerrors should only count errors !maxtries */
1674 #if defined(__DragonFly__)
1675         if ((le32toh(stat->status) & 0xff) != 1)
1676                 IFNET_STAT_INC(ifp, oerrors, 1);
1677         else
1678                 IFNET_STAT_INC(ifp, opackets, 1);
1679 #else
1680         if ((le32toh(stat->status) & 0xff) != 1)
1681                 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1682         else
1683                 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
1684 #endif
1685
1686         bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE);
1687         bus_dmamap_unload(ring->data_dmat, txdata->map);
1688         /* XXX handle M_TXCB? */
1689         m_freem(txdata->m);
1690         txdata->m = NULL;
1691         ieee80211_free_node(txdata->ni);
1692         txdata->ni = NULL;
1693
1694         ring->queued--;
1695
1696         sc->sc_tx_timer = 0;
1697 #if defined(__DragonFly__)
1698         ifq_clr_oactive(&ifp->if_snd);
1699 #else
1700         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1701 #endif
1702         wpi_start_locked(ifp);
1703 }
1704
1705 static void
1706 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
1707 {
1708         struct wpi_tx_ring *ring = &sc->cmdq;
1709         struct wpi_tx_data *data;
1710
1711         DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x "
1712                                  "type=%s len=%d\n", desc->qid, desc->idx,
1713                                  desc->flags, wpi_cmd_str(desc->type),
1714                                  le32toh(desc->len)));
1715
1716         if ((desc->qid & 7) != 4)
1717                 return; /* not a command ack */
1718
1719         data = &ring->data[desc->idx];
1720
1721         /* if the command was mapped in a mbuf, free it */
1722         if (data->m != NULL) {
1723                 bus_dmamap_unload(ring->data_dmat, data->map);
1724                 m_freem(data->m);
1725                 data->m = NULL;
1726         }
1727
1728         sc->flags &= ~WPI_FLAG_BUSY;
1729         wakeup(&ring->cmd[desc->idx]);
1730 }
1731
1732 static void
1733 wpi_notif_intr(struct wpi_softc *sc)
1734 {
1735         struct ifnet *ifp = sc->sc_ifp;
1736         struct ieee80211com *ic = ifp->if_l2com;
1737         struct wpi_rx_desc *desc;
1738         struct wpi_rx_data *data;
1739         uint32_t hw;
1740
1741         bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
1742             BUS_DMASYNC_POSTREAD);
1743
1744         hw = le32toh(sc->shared->next);
1745         while (sc->rxq.cur != hw) {
1746                 data = &sc->rxq.data[sc->rxq.cur];
1747
1748                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1749                     BUS_DMASYNC_POSTREAD);
1750                 desc = (void *)data->m->m_ext.ext_buf;
1751
1752                 DPRINTFN(WPI_DEBUG_NOTIFY,
1753                          ("notify qid=%x idx=%d flags=%x type=%d len=%d\n",
1754                           desc->qid,
1755                           desc->idx,
1756                           desc->flags,
1757                           desc->type,
1758                           le32toh(desc->len)));
1759
1760                 if (!(desc->qid & 0x80))        /* reply to a command */
1761                         wpi_cmd_intr(sc, desc);
1762
1763                 switch (desc->type) {
1764                 case WPI_RX_DONE:
1765                         /* a 802.11 frame was received */
1766                         wpi_rx_intr(sc, desc, data);
1767                         break;
1768
1769                 case WPI_TX_DONE:
1770                         /* a 802.11 frame has been transmitted */
1771                         wpi_tx_intr(sc, desc);
1772                         break;
1773
1774                 case WPI_UC_READY:
1775                 {
1776                         struct wpi_ucode_info *uc =
1777                                 (struct wpi_ucode_info *)(desc + 1);
1778
1779                         /* the microcontroller is ready */
1780                         DPRINTF(("microcode alive notification version %x "
1781                                 "alive %x\n", le32toh(uc->version),
1782                                 le32toh(uc->valid)));
1783
1784                         if (le32toh(uc->valid) != 1) {
1785                                 device_printf(sc->sc_dev,
1786                                     "microcontroller initialization failed\n");
1787                                 wpi_stop_locked(sc);
1788                         }
1789                         break;
1790                 }
1791                 case WPI_STATE_CHANGED:
1792                 {
1793                         uint32_t *status = (uint32_t *)(desc + 1);
1794
1795                         /* enabled/disabled notification */
1796                         DPRINTF(("state changed to %x\n", le32toh(*status)));
1797
1798                         if (le32toh(*status) & 1) {
1799                                 device_printf(sc->sc_dev,
1800                                     "Radio transmitter is switched off\n");
1801                                 sc->flags |= WPI_FLAG_HW_RADIO_OFF;
1802 #if defined(__DragonFly__)
1803                                 ifp->if_flags &= ~IFF_RUNNING;
1804 #else
1805                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1806 #endif
1807                                 /* Disable firmware commands */
1808                                 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD);
1809                         }
1810                         break;
1811                 }
1812                 case WPI_START_SCAN:
1813                 {
1814 #ifdef WPI_DEBUG
1815                         struct wpi_start_scan *scan =
1816                                 (struct wpi_start_scan *)(desc + 1);
1817 #endif
1818
1819                         DPRINTFN(WPI_DEBUG_SCANNING,
1820                                  ("scanning channel %d status %x\n",
1821                             scan->chan, le32toh(scan->status)));
1822                         break;
1823                 }
1824                 case WPI_STOP_SCAN:
1825                 {
1826 #ifdef WPI_DEBUG
1827                         struct wpi_stop_scan *scan =
1828                                 (struct wpi_stop_scan *)(desc + 1);
1829 #endif
1830                         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1831
1832                         DPRINTFN(WPI_DEBUG_SCANNING,
1833                             ("scan finished nchan=%d status=%d chan=%d\n",
1834                              scan->nchan, scan->status, scan->chan));
1835
1836                         sc->sc_scan_timer = 0;
1837                         ieee80211_scan_next(vap);
1838                         break;
1839                 }
1840                 case WPI_MISSED_BEACON:
1841                 {
1842                         struct wpi_missed_beacon *beacon =
1843                                 (struct wpi_missed_beacon *)(desc + 1);
1844                         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1845
1846                         if (le32toh(beacon->consecutive) >=
1847                             vap->iv_bmissthreshold) {
1848                                 DPRINTF(("Beacon miss: %u >= %u\n",
1849                                          le32toh(beacon->consecutive),
1850                                          vap->iv_bmissthreshold));
1851                                 ieee80211_beacon_miss(ic);
1852                         }
1853                         break;
1854                 }
1855                 }
1856
1857                 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;
1858         }
1859
1860         /* tell the firmware what we have processed */
1861         hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1;
1862         WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7);
1863 }
1864
1865 static void
1866 wpi_intr(void *arg)
1867 {
1868         struct wpi_softc *sc = arg;
1869         uint32_t r;
1870
1871         WPI_LOCK(sc);
1872
1873         r = WPI_READ(sc, WPI_INTR);
1874         if (r == 0 || r == 0xffffffff) {
1875                 WPI_UNLOCK(sc);
1876                 return;
1877         }
1878
1879         /* disable interrupts */
1880         WPI_WRITE(sc, WPI_MASK, 0);
1881         /* ack interrupts */
1882         WPI_WRITE(sc, WPI_INTR, r);
1883
1884         if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) {
1885                 struct ifnet *ifp = sc->sc_ifp;
1886                 struct ieee80211com *ic = ifp->if_l2com;
1887                 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1888
1889                 device_printf(sc->sc_dev, "fatal firmware error\n");
1890                 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" :
1891                                 "(Hardware Error)"));
1892                 if (vap != NULL)
1893                         ieee80211_cancel_scan(vap);
1894                 ieee80211_runtask(ic, &sc->sc_restarttask);
1895                 sc->flags &= ~WPI_FLAG_BUSY;
1896                 WPI_UNLOCK(sc);
1897                 return;
1898         }
1899
1900         if (r & WPI_RX_INTR)
1901                 wpi_notif_intr(sc);
1902
1903         if (r & WPI_ALIVE_INTR) /* firmware initialized */
1904                 wakeup(sc);
1905
1906         /* re-enable interrupts */
1907         if (sc->sc_ifp->if_flags & IFF_UP)
1908                 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
1909
1910         WPI_UNLOCK(sc);
1911 }
1912
1913 static uint8_t
1914 wpi_plcp_signal(int rate)
1915 {
1916         switch (rate) {
1917         /* CCK rates (returned values are device-dependent) */
1918         case 2:         return 10;
1919         case 4:         return 20;
1920         case 11:        return 55;
1921         case 22:        return 110;
1922
1923         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1924         /* R1-R4 (ral/ural is R4-R1) */
1925         case 12:        return 0xd;
1926         case 18:        return 0xf;
1927         case 24:        return 0x5;
1928         case 36:        return 0x7;
1929         case 48:        return 0x9;
1930         case 72:        return 0xb;
1931         case 96:        return 0x1;
1932         case 108:       return 0x3;
1933
1934         /* unsupported rates (should not get there) */
1935         default:        return 0;
1936         }
1937 }
1938
1939 /* quickly determine if a given rate is CCK or OFDM */
1940 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1941
1942 /*
1943  * Construct the data packet for a transmit buffer and acutally put
1944  * the buffer onto the transmit ring, kicking the card to process the
1945  * the buffer.
1946  */
1947 static int
1948 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1949         int ac)
1950 {
1951         struct ieee80211vap *vap = ni->ni_vap;
1952         struct ifnet *ifp = sc->sc_ifp;
1953         struct ieee80211com *ic = ifp->if_l2com;
1954         const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams;
1955         struct wpi_tx_ring *ring = &sc->txq[ac];
1956         struct wpi_tx_desc *desc;
1957         struct wpi_tx_data *data;
1958         struct wpi_tx_cmd *cmd;
1959         struct wpi_cmd_data *tx;
1960         struct ieee80211_frame *wh;
1961         const struct ieee80211_txparam *tp;
1962         struct ieee80211_key *k;
1963         struct mbuf *mnew;
1964         int i, error, nsegs, rate, hdrlen, ismcast;
1965         bus_dma_segment_t segs[WPI_MAX_SCATTER];
1966
1967         desc = &ring->desc[ring->cur];
1968         data = &ring->data[ring->cur];
1969
1970         wh = mtod(m0, struct ieee80211_frame *);
1971
1972         hdrlen = ieee80211_hdrsize(wh);
1973         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1974
1975         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1976                 k = ieee80211_crypto_encap(ni, m0);
1977                 if (k == NULL) {
1978                         m_freem(m0);
1979                         return ENOBUFS;
1980                 }
1981                 /* packet header may have moved, reset our local pointer */
1982                 wh = mtod(m0, struct ieee80211_frame *);
1983         }
1984
1985         cmd = &ring->cmd[ring->cur];
1986         cmd->code = WPI_CMD_TX_DATA;
1987         cmd->flags = 0;
1988         cmd->qid = ring->qid;
1989         cmd->idx = ring->cur;
1990
1991         tx = (struct wpi_cmd_data *)cmd->data;
1992         tx->flags = htole32(WPI_TX_AUTO_SEQ);
1993         tx->timeout = htole16(0);
1994         tx->ofdm_mask = 0xff;
1995         tx->cck_mask = 0x0f;
1996         tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
1997         tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS;
1998         tx->len = htole16(m0->m_pkthdr.len);
1999
2000         if (!ismcast) {
2001                 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 ||
2002                     !cap->cap_wmeParams[ac].wmep_noackPolicy)
2003                         tx->flags |= htole32(WPI_TX_NEED_ACK);
2004                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
2005                         tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP);
2006                         tx->rts_ntries = 7;
2007                 }
2008         }
2009         /* pick a rate */
2010         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
2011         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) {
2012                 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
2013                 /* tell h/w to set timestamp in probe responses */
2014                 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
2015                         tx->flags |= htole32(WPI_TX_INSERT_TSTAMP);
2016                 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
2017                     subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
2018                         tx->timeout = htole16(3);
2019                 else
2020                         tx->timeout = htole16(2);
2021                 rate = tp->mgmtrate;
2022         } else if (ismcast) {
2023                 rate = tp->mcastrate;
2024         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
2025                 rate = tp->ucastrate;
2026         } else {
2027                 (void) ieee80211_ratectl_rate(ni, NULL, 0);
2028                 rate = ni->ni_txrate;
2029         }
2030         tx->rate = wpi_plcp_signal(rate);
2031
2032         /* be very persistant at sending frames out */
2033 #if 0
2034         tx->data_ntries = tp->maxretry;
2035 #else
2036         tx->data_ntries = 15;           /* XXX way too high */
2037 #endif
2038
2039         if (ieee80211_radiotap_active_vap(vap)) {
2040                 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
2041                 tap->wt_flags = 0;
2042                 tap->wt_rate = rate;
2043                 tap->wt_hwqueue = ac;
2044                 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
2045                         tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
2046
2047                 ieee80211_radiotap_tx(vap, m0);
2048         }
2049
2050         /* save and trim IEEE802.11 header */
2051         m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh);
2052         m_adj(m0, hdrlen);
2053
2054 #if defined(__DragonFly__)
2055         error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map,
2056             m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
2057 #else
2058         error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
2059             &nsegs, BUS_DMA_NOWAIT);
2060 #endif
2061         if (error != 0 && error != EFBIG) {
2062                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
2063                     error);
2064                 m_freem(m0);
2065                 return error;
2066         }
2067         if (error != 0) {
2068                 /* XXX use m_collapse */
2069                 mnew = m_defrag(m0, M_NOWAIT);
2070                 if (mnew == NULL) {
2071                         device_printf(sc->sc_dev,
2072                             "could not defragment mbuf\n");
2073                         m_freem(m0);
2074                         return ENOBUFS;
2075                 }
2076                 m0 = mnew;
2077
2078 #if defined(__DragonFly__)
2079                 error = bus_dmamap_load_mbuf_segment(ring->data_dmat,
2080                     data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
2081 #else
2082                 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map,
2083                     m0, segs, &nsegs, BUS_DMA_NOWAIT);
2084 #endif
2085                 if (error != 0) {
2086                         device_printf(sc->sc_dev,
2087                             "could not map mbuf (error %d)\n", error);
2088                         m_freem(m0);
2089                         return error;
2090                 }
2091         }
2092
2093         data->m = m0;
2094         data->ni = ni;
2095
2096         DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n",
2097             ring->qid, ring->cur, m0->m_pkthdr.len, nsegs));
2098
2099         /* first scatter/gather segment is used by the tx data command */
2100         desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 |
2101             (1 + nsegs) << 24);
2102         desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2103             ring->cur * sizeof (struct wpi_tx_cmd));
2104         desc->segs[0].len  = htole32(4 + sizeof (struct wpi_cmd_data));
2105         for (i = 1; i <= nsegs; i++) {
2106                 desc->segs[i].addr = htole32(segs[i - 1].ds_addr);
2107                 desc->segs[i].len  = htole32(segs[i - 1].ds_len);
2108         }
2109
2110         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
2111         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
2112             BUS_DMASYNC_PREWRITE);
2113
2114         ring->queued++;
2115
2116         /* kick ring */
2117         ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
2118         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2119
2120         return 0;
2121 }
2122
2123 /**
2124  * Process data waiting to be sent on the IFNET output queue
2125  */
2126 static void
2127 wpi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
2128 {
2129         struct wpi_softc *sc = ifp->if_softc;
2130
2131         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
2132
2133         WPI_LOCK(sc);
2134         wpi_start_locked(ifp);
2135         WPI_UNLOCK(sc);
2136 }
2137
2138 static void
2139 wpi_start_locked(struct ifnet *ifp)
2140 {
2141         struct wpi_softc *sc = ifp->if_softc;
2142         struct ieee80211_node *ni;
2143         struct mbuf *m;
2144         int ac;
2145
2146         WPI_LOCK_ASSERT(sc);
2147
2148 #if defined(__DragonFly__)
2149         if ((ifp->if_flags & IFF_RUNNING) == 0)
2150                 return;
2151 #else
2152         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
2153                 return;
2154 #endif
2155
2156         for (;;) {
2157 #if defined(__DragonFly__)
2158                 m = ifq_dequeue(&ifp->if_snd);
2159 #else
2160                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
2161 #endif
2162                 if (m == NULL)
2163                         break;
2164                 ac = M_WME_GETAC(m);
2165                 if (sc->txq[ac].queued > sc->txq[ac].count - 8) {
2166                         /* there is no place left in this ring */
2167 #if defined(__DragonFly__)
2168                         ifq_prepend(&ifp->if_snd, m);
2169                         ifq_set_oactive(&ifp->if_snd);
2170 #else
2171                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
2172                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2173 #endif
2174                         break;
2175                 }
2176                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
2177                 if (wpi_tx_data(sc, m, ni, ac) != 0) {
2178                         ieee80211_free_node(ni);
2179 #if defined(__DragonFly__)
2180                         IFNET_STAT_INC(ifp, oerrors, 1);
2181 #else
2182                         if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
2183 #endif
2184                         break;
2185                 }
2186                 sc->sc_tx_timer = 5;
2187         }
2188 }
2189
2190 static int
2191 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2192         const struct ieee80211_bpf_params *params)
2193 {
2194         struct ieee80211com *ic = ni->ni_ic;
2195         struct ifnet *ifp = ic->ic_ifp;
2196         struct wpi_softc *sc = ifp->if_softc;
2197
2198         /* prevent management frames from being sent if we're not ready */
2199 #if defined(__DragonFly__)
2200         if (!(ifp->if_flags & IFF_RUNNING)) {
2201                 m_freem(m);
2202                 ieee80211_free_node(ni);
2203                 return ENETDOWN;
2204         }
2205 #else
2206         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2207                 m_freem(m);
2208                 ieee80211_free_node(ni);
2209                 return ENETDOWN;
2210         }
2211 #endif
2212         WPI_LOCK(sc);
2213
2214         /* management frames go into ring 0 */
2215         if (sc->txq[0].queued > sc->txq[0].count - 8) {
2216 #if defined(__DragonFly__)
2217                 ifq_set_oactive(&ifp->if_snd);
2218 #else
2219                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2220 #endif
2221                 m_freem(m);
2222                 WPI_UNLOCK(sc);
2223                 ieee80211_free_node(ni);
2224                 return ENOBUFS;         /* XXX */
2225         }
2226
2227 #if defined(__DragonFly__)
2228         IFNET_STAT_INC(ifp, opackets, 1);
2229 #else
2230         if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
2231 #endif
2232         if (wpi_tx_data(sc, m, ni, 0) != 0)
2233                 goto bad;
2234         sc->sc_tx_timer = 5;
2235         callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
2236
2237         WPI_UNLOCK(sc);
2238         return 0;
2239 bad:
2240 #if defined(__DragonFly__)
2241         IFNET_STAT_INC(ifp, oerrors, 1);
2242 #else
2243         if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
2244 #endif
2245         WPI_UNLOCK(sc);
2246         ieee80211_free_node(ni);
2247         return EIO;             /* XXX */
2248 }
2249
2250 static int
2251 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data,
2252     struct ucred *cred __unused)
2253 {
2254         struct wpi_softc *sc = ifp->if_softc;
2255         struct ieee80211com *ic = ifp->if_l2com;
2256         struct ifreq *ifr = (struct ifreq *) data;
2257         int error = 0, startall = 0;
2258
2259         switch (cmd) {
2260         case SIOCSIFFLAGS:
2261                 WPI_LOCK(sc);
2262 #if defined(__DragonFly__)
2263                 if ((ifp->if_flags & IFF_UP)) {
2264                         if (!(ifp->if_flags & IFF_RUNNING)) {
2265                                 wpi_init_locked(sc, 0);
2266                                 startall = 1;
2267                         }
2268                 } else if ((ifp->if_flags & IFF_RUNNING) ||
2269                            (sc->flags & WPI_FLAG_HW_RADIO_OFF))
2270                         wpi_stop_locked(sc);
2271 #else
2272                 if ((ifp->if_flags & IFF_UP)) {
2273                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2274                                 wpi_init_locked(sc, 0);
2275                                 startall = 1;
2276                         }
2277                 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) ||
2278                            (sc->flags & WPI_FLAG_HW_RADIO_OFF))
2279                         wpi_stop_locked(sc);
2280 #endif
2281                 WPI_UNLOCK(sc);
2282                 if (startall)
2283                         ieee80211_start_all(ic);
2284                 break;
2285         case SIOCGIFMEDIA:
2286                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2287                 break;
2288         case SIOCGIFADDR:
2289                 error = ether_ioctl(ifp, cmd, data);
2290                 break;
2291         default:
2292                 error = EINVAL;
2293                 break;
2294         }
2295         return error;
2296 }
2297
2298 /*
2299  * Extract various information from EEPROM.
2300  */
2301 static void
2302 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
2303 {
2304         int i;
2305
2306         /* read the hardware capabilities, revision and SKU type */
2307         wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1);
2308         wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2);
2309         wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1);
2310
2311         /* read the regulatory domain */
2312         wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4);
2313
2314         /* read in the hw MAC address */
2315         wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6);
2316
2317         /* read the list of authorized channels */
2318         for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
2319                 wpi_read_eeprom_channels(sc,i);
2320
2321         /* read the power level calibration info for each group */
2322         for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
2323                 wpi_read_eeprom_group(sc,i);
2324 }
2325
2326 /*
2327  * Send a command to the firmware.
2328  */
2329 static int
2330 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async)
2331 {
2332         struct wpi_tx_ring *ring = &sc->cmdq;
2333         struct wpi_tx_desc *desc;
2334         struct wpi_tx_cmd *cmd;
2335
2336 #ifdef WPI_DEBUG
2337         if (!async) {
2338                 WPI_LOCK_ASSERT(sc);
2339         }
2340 #endif
2341
2342         DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size,
2343                     async));
2344
2345         if (sc->flags & WPI_FLAG_BUSY) {
2346                 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
2347                     __func__, code);
2348                 return EAGAIN;
2349         }
2350         sc->flags|= WPI_FLAG_BUSY;
2351
2352         KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes",
2353             code, size));
2354
2355         desc = &ring->desc[ring->cur];
2356         cmd = &ring->cmd[ring->cur];
2357
2358         cmd->code = code;
2359         cmd->flags = 0;
2360         cmd->qid = ring->qid;
2361         cmd->idx = ring->cur;
2362         memcpy(cmd->data, buf, size);
2363
2364         desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24);
2365         desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2366                 ring->cur * sizeof (struct wpi_tx_cmd));
2367         desc->segs[0].len  = htole32(4 + size);
2368
2369         /* kick cmd ring */
2370         ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2371         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2372
2373         if (async) {
2374                 sc->flags &= ~ WPI_FLAG_BUSY;
2375                 return 0;
2376         }
2377
2378 #if defined(__DragonFly__)
2379         return wpi_sleep(sc, cmd, PCATCH, "wpicmd", hz);
2380 #else
2381         return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz);
2382 #endif
2383 }
2384
2385 static int
2386 wpi_wme_update(struct ieee80211com *ic)
2387 {
2388 #define WPI_EXP2(v)     htole16((1 << (v)) - 1)
2389 #define WPI_USEC(v)     htole16(IEEE80211_TXOP_TO_US(v))
2390         struct wpi_softc *sc = ic->ic_ifp->if_softc;
2391         const struct wmeParams *wmep;
2392         struct wpi_wme_setup wme;
2393         int ac;
2394
2395         /* don't override default WME values if WME is not actually enabled */
2396         if (!(ic->ic_flags & IEEE80211_F_WME))
2397                 return 0;
2398
2399         wme.flags = 0;
2400         for (ac = 0; ac < WME_NUM_AC; ac++) {
2401                 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
2402                 wme.ac[ac].aifsn = wmep->wmep_aifsn;
2403                 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin);
2404                 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax);
2405                 wme.ac[ac].txop  = WPI_USEC(wmep->wmep_txopLimit);
2406
2407                 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d "
2408                     "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin,
2409                     wme.ac[ac].cwmax, wme.ac[ac].txop));
2410         }
2411         return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1);
2412 #undef WPI_USEC
2413 #undef WPI_EXP2
2414 }
2415
2416 /*
2417  * Configure h/w multi-rate retries.
2418  */
2419 static int
2420 wpi_mrr_setup(struct wpi_softc *sc)
2421 {
2422         struct ifnet *ifp = sc->sc_ifp;
2423         struct ieee80211com *ic = ifp->if_l2com;
2424         struct wpi_mrr_setup mrr;
2425         int i, error;
2426
2427         memset(&mrr, 0, sizeof (struct wpi_mrr_setup));
2428
2429         /* CCK rates (not used with 802.11a) */
2430         for (i = WPI_CCK1; i <= WPI_CCK11; i++) {
2431                 mrr.rates[i].flags = 0;
2432                 mrr.rates[i].signal = wpi_ridx_to_plcp[i];
2433                 /* fallback to the immediate lower CCK rate (if any) */
2434                 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1;
2435                 /* try one time at this rate before falling back to "next" */
2436                 mrr.rates[i].ntries = 1;
2437         }
2438
2439         /* OFDM rates (not used with 802.11b) */
2440         for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) {
2441                 mrr.rates[i].flags = 0;
2442                 mrr.rates[i].signal = wpi_ridx_to_plcp[i];
2443                 /* fallback to the immediate lower OFDM rate (if any) */
2444                 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */
2445                 mrr.rates[i].next = (i == WPI_OFDM6) ?
2446                     ((ic->ic_curmode == IEEE80211_MODE_11A) ?
2447                         WPI_OFDM6 : WPI_CCK2) :
2448                     i - 1;
2449                 /* try one time at this rate before falling back to "next" */
2450                 mrr.rates[i].ntries = 1;
2451         }
2452
2453         /* setup MRR for control frames */
2454         mrr.which = WPI_MRR_CTL;
2455         error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
2456         if (error != 0) {
2457                 device_printf(sc->sc_dev,
2458                     "could not setup MRR for control frames\n");
2459                 return error;
2460         }
2461
2462         /* setup MRR for data frames */
2463         mrr.which = WPI_MRR_DATA;
2464         error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
2465         if (error != 0) {
2466                 device_printf(sc->sc_dev,
2467                     "could not setup MRR for data frames\n");
2468                 return error;
2469         }
2470
2471         return 0;
2472 }
2473
2474 static void
2475 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on)
2476 {
2477         struct wpi_cmd_led led;
2478
2479         led.which = which;
2480         led.unit = htole32(100000);     /* on/off in unit of 100ms */
2481         led.off = off;
2482         led.on = on;
2483
2484         (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1);
2485 }
2486
2487 static void
2488 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni)
2489 {
2490         struct wpi_cmd_tsf tsf;
2491         uint64_t val, mod;
2492
2493         memset(&tsf, 0, sizeof tsf);
2494         memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8);
2495         tsf.bintval = htole16(ni->ni_intval);
2496         tsf.lintval = htole16(10);
2497
2498         /* compute remaining time until next beacon */
2499         val = (uint64_t)ni->ni_intval  * 1024;  /* msec -> usec */
2500         mod = le64toh(tsf.tstamp) % val;
2501         tsf.binitval = htole32((uint32_t)(val - mod));
2502
2503         if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
2504                 device_printf(sc->sc_dev, "could not enable TSF\n");
2505 }
2506
2507 #if 0
2508 /*
2509  * Build a beacon frame that the firmware will broadcast periodically in
2510  * IBSS or HostAP modes.
2511  */
2512 static int
2513 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni)
2514 {
2515         struct ifnet *ifp = sc->sc_ifp;
2516         struct ieee80211com *ic = ifp->if_l2com;
2517         struct wpi_tx_ring *ring = &sc->cmdq;
2518         struct wpi_tx_desc *desc;
2519         struct wpi_tx_data *data;
2520         struct wpi_tx_cmd *cmd;
2521         struct wpi_cmd_beacon *bcn;
2522         struct ieee80211_beacon_offsets bo;
2523         struct mbuf *m0;
2524         bus_addr_t physaddr;
2525         int error;
2526
2527         desc = &ring->desc[ring->cur];
2528         data = &ring->data[ring->cur];
2529
2530         m0 = ieee80211_beacon_alloc(ic, ni, &bo);
2531         if (m0 == NULL) {
2532                 device_printf(sc->sc_dev, "could not allocate beacon frame\n");
2533                 return ENOMEM;
2534         }
2535
2536         cmd = &ring->cmd[ring->cur];
2537         cmd->code = WPI_CMD_SET_BEACON;
2538         cmd->flags = 0;
2539         cmd->qid = ring->qid;
2540         cmd->idx = ring->cur;
2541
2542         bcn = (struct wpi_cmd_beacon *)cmd->data;
2543         memset(bcn, 0, sizeof (struct wpi_cmd_beacon));
2544         bcn->id = WPI_ID_BROADCAST;
2545         bcn->ofdm_mask = 0xff;
2546         bcn->cck_mask = 0x0f;
2547         bcn->lifetime = htole32(WPI_LIFETIME_INFINITE);
2548         bcn->len = htole16(m0->m_pkthdr.len);
2549         bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
2550                 wpi_plcp_signal(12) : wpi_plcp_signal(2);
2551         bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP);
2552
2553         /* save and trim IEEE802.11 header */
2554         m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh);
2555         m_adj(m0, sizeof (struct ieee80211_frame));
2556
2557         /* assume beacon frame is contiguous */
2558         error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *),
2559             m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0);
2560         if (error != 0) {
2561                 device_printf(sc->sc_dev, "could not map beacon\n");
2562                 m_freem(m0);
2563                 return error;
2564         }
2565
2566         data->m = m0;
2567
2568         /* first scatter/gather segment is used by the beacon command */
2569         desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24);
2570         desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2571                 ring->cur * sizeof (struct wpi_tx_cmd));
2572         desc->segs[0].len  = htole32(4 + sizeof (struct wpi_cmd_beacon));
2573         desc->segs[1].addr = htole32(physaddr);
2574         desc->segs[1].len  = htole32(m0->m_pkthdr.len);
2575
2576         /* kick cmd ring */
2577         ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2578         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2579
2580         return 0;
2581 }
2582 #endif
2583
2584 static int
2585 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap)
2586 {
2587         struct ieee80211com *ic = vap->iv_ic;
2588         struct ieee80211_node *ni = vap->iv_bss;
2589         struct wpi_node_info node;
2590         int error;
2591
2592
2593         /* update adapter's configuration */
2594         sc->config.associd = 0;
2595         sc->config.filter &= ~htole32(WPI_FILTER_BSS);
2596         IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
2597         sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
2598         if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
2599                 sc->config.flags |= htole32(WPI_CONFIG_AUTO |
2600                     WPI_CONFIG_24GHZ);
2601         } else {
2602                 sc->config.flags &= ~htole32(WPI_CONFIG_AUTO |
2603                     WPI_CONFIG_24GHZ);
2604         }
2605         if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
2606                 sc->config.cck_mask  = 0;
2607                 sc->config.ofdm_mask = 0x15;
2608         } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
2609                 sc->config.cck_mask  = 0x03;
2610                 sc->config.ofdm_mask = 0;
2611         } else {
2612                 /* XXX assume 802.11b/g */
2613                 sc->config.cck_mask  = 0x0f;
2614                 sc->config.ofdm_mask = 0x15;
2615         }
2616
2617         DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan,
2618                 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask));
2619         error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
2620                 sizeof (struct wpi_config), 1);
2621         if (error != 0) {
2622                 device_printf(sc->sc_dev, "could not configure\n");
2623                 return error;
2624         }
2625
2626         /* configuration has changed, set Tx power accordingly */
2627         if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) {
2628                 device_printf(sc->sc_dev, "could not set Tx power\n");
2629                 return error;
2630         }
2631
2632         /* add default node */
2633         memset(&node, 0, sizeof node);
2634         IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid);
2635         node.id = WPI_ID_BSS;
2636         node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
2637             wpi_plcp_signal(12) : wpi_plcp_signal(2);
2638         node.action = htole32(WPI_ACTION_SET_RATE);
2639         node.antenna = WPI_ANTENNA_BOTH;
2640         error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
2641         if (error != 0)
2642                 device_printf(sc->sc_dev, "could not add BSS node\n");
2643
2644         return (error);
2645 }
2646
2647 static int
2648 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap)
2649 {
2650         struct ieee80211com *ic = vap->iv_ic;
2651         struct ieee80211_node *ni = vap->iv_bss;
2652         int error;
2653
2654         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
2655                 /* link LED blinks while monitoring */
2656                 wpi_set_led(sc, WPI_LED_LINK, 5, 5);
2657                 return 0;
2658         }
2659
2660         wpi_enable_tsf(sc, ni);
2661
2662         /* update adapter's configuration */
2663         sc->config.associd = htole16(ni->ni_associd & ~0xc000);
2664         /* short preamble/slot time are negotiated when associating */
2665         sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE |
2666             WPI_CONFIG_SHSLOT);
2667         if (ic->ic_flags & IEEE80211_F_SHSLOT)
2668                 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT);
2669         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
2670                 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE);
2671         sc->config.filter |= htole32(WPI_FILTER_BSS);
2672
2673         /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */
2674
2675         DPRINTF(("config chan %d flags %x\n", sc->config.chan,
2676                     sc->config.flags));
2677         error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct
2678                     wpi_config), 1);
2679         if (error != 0) {
2680                 device_printf(sc->sc_dev, "could not update configuration\n");
2681                 return error;
2682         }
2683
2684         error = wpi_set_txpower(sc, ni->ni_chan, 1);
2685         if (error != 0) {
2686                 device_printf(sc->sc_dev, "could set txpower\n");
2687                 return error;
2688         }
2689
2690         /* link LED always on while associated */
2691         wpi_set_led(sc, WPI_LED_LINK, 0, 1);
2692
2693         /* start automatic rate control timer */
2694         callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
2695
2696         return (error);
2697 }
2698
2699 /*
2700  * Send a scan request to the firmware.  Since this command is huge, we map it
2701  * into a mbufcluster instead of using the pre-allocated set of commands. Note,
2702  * much of this code is similar to that in wpi_cmd but because we must manually
2703  * construct the probe & channels, we duplicate what's needed here. XXX In the
2704  * future, this function should be modified to use wpi_cmd to help cleanup the
2705  * code base.
2706  */
2707 static int
2708 wpi_scan(struct wpi_softc *sc)
2709 {
2710         struct ifnet *ifp = sc->sc_ifp;
2711         struct ieee80211com *ic = ifp->if_l2com;
2712         struct ieee80211_scan_state *ss = ic->ic_scan;
2713         struct wpi_tx_ring *ring = &sc->cmdq;
2714         struct wpi_tx_desc *desc;
2715         struct wpi_tx_data *data;
2716         struct wpi_tx_cmd *cmd;
2717         struct wpi_scan_hdr *hdr;
2718         struct wpi_scan_chan *chan;
2719         struct ieee80211_frame *wh;
2720         struct ieee80211_rateset *rs;
2721         struct ieee80211_channel *c;
2722         enum ieee80211_phymode mode;
2723         uint8_t *frm;
2724         int pktlen, error, i, nssid;
2725         bus_addr_t physaddr;
2726
2727         desc = &ring->desc[ring->cur];
2728         data = &ring->data[ring->cur];
2729
2730         data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
2731         if (data->m == NULL) {
2732                 device_printf(sc->sc_dev,
2733                     "could not allocate mbuf for scan command\n");
2734                 return ENOMEM;
2735         }
2736
2737         cmd = mtod(data->m, struct wpi_tx_cmd *);
2738         cmd->code = WPI_CMD_SCAN;
2739         cmd->flags = 0;
2740         cmd->qid = ring->qid;
2741         cmd->idx = ring->cur;
2742
2743         hdr = (struct wpi_scan_hdr *)cmd->data;
2744         memset(hdr, 0, sizeof(struct wpi_scan_hdr));
2745
2746         /*
2747          * Move to the next channel if no packets are received within 5 msecs
2748          * after sending the probe request (this helps to reduce the duration
2749          * of active scans).
2750          */
2751         hdr->quiet = htole16(5);
2752         hdr->threshold = htole16(1);
2753
2754         if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
2755                 /* send probe requests at 6Mbps */
2756                 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6];
2757
2758                 /* Enable crc checking */
2759                 hdr->promotion = htole16(1);
2760         } else {
2761                 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO);
2762                 /* send probe requests at 1Mbps */
2763                 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1];
2764         }
2765         hdr->tx.id = WPI_ID_BROADCAST;
2766         hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
2767         hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ);
2768
2769         memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids));
2770         nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS);
2771         for (i = 0; i < nssid; i++) {
2772                 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID;
2773                 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN);
2774                 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid,
2775                     hdr->scan_essids[i].esslen);
2776 #ifdef WPI_DEBUG
2777                 if (wpi_debug & WPI_DEBUG_SCANNING) {
2778                         kprintf("Scanning Essid: ");
2779                         ieee80211_print_essid(hdr->scan_essids[i].essid,
2780                             hdr->scan_essids[i].esslen);
2781                         kprintf("\n");
2782                 }
2783 #endif
2784         }
2785
2786         /*
2787          * Build a probe request frame.  Most of the following code is a
2788          * copy & paste of what is done in net80211.
2789          */
2790         wh = (struct ieee80211_frame *)&hdr->scan_essids[WPI_SCAN_MAX_ESSIDS];
2791         wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
2792                 IEEE80211_FC0_SUBTYPE_PROBE_REQ;
2793         wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
2794         IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
2795         IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
2796         IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
2797         *(u_int16_t *)&wh->i_dur[0] = 0;        /* filled by h/w */
2798         *(u_int16_t *)&wh->i_seq[0] = 0;        /* filled by h/w */
2799
2800         frm = (uint8_t *)(wh + 1);
2801
2802         mode = ieee80211_chan2mode(ic->ic_curchan);
2803         rs = &ic->ic_sup_rates[mode];
2804
2805         frm = ieee80211_add_ssid(frm, NULL, 0);
2806         frm = ieee80211_add_rates(frm, rs);
2807         frm = ieee80211_add_xrates(frm, rs);
2808
2809         /* setup length of probe request */
2810         hdr->tx.len = htole16(frm - (uint8_t *)wh);
2811
2812         /*
2813          * Construct information about the channel that we
2814          * want to scan. The firmware expects this to be directly
2815          * after the scan probe request
2816          */
2817         c = ic->ic_curchan;
2818         chan = (struct wpi_scan_chan *)frm;
2819         chan->chan = ieee80211_chan2ieee(ic, c);
2820         chan->flags = 0;
2821         if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
2822                 chan->flags |= WPI_CHAN_ACTIVE;
2823                 if (nssid != 0)
2824                         chan->flags |= WPI_CHAN_DIRECT;
2825         }
2826         chan->gain_dsp = 0x6e; /* Default level */
2827         if (IEEE80211_IS_CHAN_5GHZ(c)) {
2828                 chan->active = htole16(10);
2829                 chan->passive = htole16(ss->ss_maxdwell);
2830                 chan->gain_radio = 0x3b;
2831         } else {
2832                 chan->active = htole16(20);
2833                 chan->passive = htole16(ss->ss_maxdwell);
2834                 chan->gain_radio = 0x28;
2835         }
2836
2837         DPRINTFN(WPI_DEBUG_SCANNING,
2838             ("Scanning %u Passive: %d\n",
2839              chan->chan,
2840              c->ic_flags & IEEE80211_CHAN_PASSIVE));
2841
2842         hdr->nchan++;
2843         chan++;
2844
2845         frm += sizeof (struct wpi_scan_chan);
2846 #if 0
2847         // XXX All Channels....
2848         for (c  = &ic->ic_channels[1];
2849              c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) {
2850                 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags)
2851                         continue;
2852
2853                 chan->chan = ieee80211_chan2ieee(ic, c);
2854                 chan->flags = 0;
2855                 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
2856                     chan->flags |= WPI_CHAN_ACTIVE;
2857                     if (ic->ic_des_ssid[0].len != 0)
2858                         chan->flags |= WPI_CHAN_DIRECT;
2859                 }
2860                 chan->gain_dsp = 0x6e; /* Default level */
2861                 if (IEEE80211_IS_CHAN_5GHZ(c)) {
2862                         chan->active = htole16(10);
2863                         chan->passive = htole16(110);
2864                         chan->gain_radio = 0x3b;
2865                 } else {
2866                         chan->active = htole16(20);
2867                         chan->passive = htole16(120);
2868                         chan->gain_radio = 0x28;
2869                 }
2870
2871                 DPRINTFN(WPI_DEBUG_SCANNING,
2872                          ("Scanning %u Passive: %d\n",
2873                           chan->chan,
2874                           c->ic_flags & IEEE80211_CHAN_PASSIVE));
2875
2876                 hdr->nchan++;
2877                 chan++;
2878
2879                 frm += sizeof (struct wpi_scan_chan);
2880         }
2881 #endif
2882
2883         hdr->len = htole16(frm - (uint8_t *)hdr);
2884         pktlen = frm - (uint8_t *)cmd;
2885
2886         error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
2887             wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
2888         if (error != 0) {
2889                 device_printf(sc->sc_dev, "could not map scan command\n");
2890                 m_freem(data->m);
2891                 data->m = NULL;
2892                 return error;
2893         }
2894
2895         desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24);
2896         desc->segs[0].addr = htole32(physaddr);
2897         desc->segs[0].len  = htole32(pktlen);
2898
2899         bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
2900             BUS_DMASYNC_PREWRITE);
2901         bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
2902
2903         /* kick cmd ring */
2904         ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2905         WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2906
2907         sc->sc_scan_timer = 5;
2908         return 0;       /* will be notified async. of failure/success */
2909 }
2910
2911 /**
2912  * Configure the card to listen to a particular channel, this transisions the
2913  * card in to being able to receive frames from remote devices.
2914  */
2915 static int
2916 wpi_config(struct wpi_softc *sc)
2917 {
2918         struct ifnet *ifp = sc->sc_ifp;
2919         struct ieee80211com *ic = ifp->if_l2com;
2920         struct wpi_power power;
2921         struct wpi_bluetooth bluetooth;
2922         struct wpi_node_info node;
2923         int error;
2924
2925         /* set power mode */
2926         memset(&power, 0, sizeof power);
2927         power.flags = htole32(WPI_POWER_CAM|0x8);
2928         error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0);
2929         if (error != 0) {
2930                 device_printf(sc->sc_dev, "could not set power mode\n");
2931                 return error;
2932         }
2933
2934         /* configure bluetooth coexistence */
2935         memset(&bluetooth, 0, sizeof bluetooth);
2936         bluetooth.flags = 3;
2937         bluetooth.lead = 0xaa;
2938         bluetooth.kill = 1;
2939         error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
2940             0);
2941         if (error != 0) {
2942                 device_printf(sc->sc_dev,
2943                     "could not configure bluetooth coexistence\n");
2944                 return error;
2945         }
2946
2947         /* configure adapter */
2948         memset(&sc->config, 0, sizeof (struct wpi_config));
2949         IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp));
2950         /*set default channel*/
2951         sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
2952         sc->config.flags = htole32(WPI_CONFIG_TSF);
2953         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2954                 sc->config.flags |= htole32(WPI_CONFIG_AUTO |
2955                     WPI_CONFIG_24GHZ);
2956         }
2957         sc->config.filter = 0;
2958         switch (ic->ic_opmode) {
2959         case IEEE80211_M_STA:
2960         case IEEE80211_M_WDS:   /* No know setup, use STA for now */
2961                 sc->config.mode = WPI_MODE_STA;
2962                 sc->config.filter |= htole32(WPI_FILTER_MULTICAST);
2963                 break;
2964         case IEEE80211_M_IBSS:
2965         case IEEE80211_M_AHDEMO:
2966                 sc->config.mode = WPI_MODE_IBSS;
2967                 sc->config.filter |= htole32(WPI_FILTER_BEACON |
2968                                              WPI_FILTER_MULTICAST);
2969                 break;
2970         case IEEE80211_M_HOSTAP:
2971                 sc->config.mode = WPI_MODE_HOSTAP;
2972                 break;
2973         case IEEE80211_M_MONITOR:
2974                 sc->config.mode = WPI_MODE_MONITOR;
2975                 sc->config.filter |= htole32(WPI_FILTER_MULTICAST |
2976                         WPI_FILTER_CTL | WPI_FILTER_PROMISC);
2977                 break;
2978         default:
2979                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2980                 return EINVAL;
2981         }
2982         sc->config.cck_mask  = 0x0f;    /* not yet negotiated */
2983         sc->config.ofdm_mask = 0xff;    /* not yet negotiated */
2984         error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
2985                 sizeof (struct wpi_config), 0);
2986         if (error != 0) {
2987                 device_printf(sc->sc_dev, "configure command failed\n");
2988                 return error;
2989         }
2990
2991         /* configuration has changed, set Tx power accordingly */
2992         if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) {
2993             device_printf(sc->sc_dev, "could not set Tx power\n");
2994             return error;
2995         }
2996
2997         /* add broadcast node */
2998         memset(&node, 0, sizeof node);
2999         IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr);
3000         node.id = WPI_ID_BROADCAST;
3001         node.rate = wpi_plcp_signal(2);
3002         error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0);
3003         if (error != 0) {
3004                 device_printf(sc->sc_dev, "could not add broadcast node\n");
3005                 return error;
3006         }
3007
3008         /* Setup rate scalling */
3009         error = wpi_mrr_setup(sc);
3010         if (error != 0) {
3011                 device_printf(sc->sc_dev, "could not setup MRR\n");
3012                 return error;
3013         }
3014
3015         return 0;
3016 }
3017
3018 static void
3019 wpi_stop_master(struct wpi_softc *sc)
3020 {
3021         uint32_t tmp;
3022         int ntries;
3023
3024         DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n"));
3025
3026         tmp = WPI_READ(sc, WPI_RESET);
3027         WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET);
3028
3029         tmp = WPI_READ(sc, WPI_GPIO_CTL);
3030         if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP)
3031                 return; /* already asleep */
3032
3033         for (ntries = 0; ntries < 100; ntries++) {
3034                 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED)
3035                         break;
3036                 DELAY(10);
3037         }
3038         if (ntries == 100) {
3039                 device_printf(sc->sc_dev, "timeout waiting for master\n");
3040         }
3041 }
3042
3043 static int
3044 wpi_power_up(struct wpi_softc *sc)
3045 {
3046         uint32_t tmp;
3047         int ntries;
3048
3049         wpi_mem_lock(sc);
3050         tmp = wpi_mem_read(sc, WPI_MEM_POWER);
3051         wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000);
3052         wpi_mem_unlock(sc);
3053
3054         for (ntries = 0; ntries < 5000; ntries++) {
3055                 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED)
3056                         break;
3057                 DELAY(10);
3058         }
3059         if (ntries == 5000) {
3060                 device_printf(sc->sc_dev,
3061                     "timeout waiting for NIC to power up\n");
3062                 return ETIMEDOUT;
3063         }
3064         return 0;
3065 }
3066
3067 static int
3068 wpi_reset(struct wpi_softc *sc)
3069 {
3070         uint32_t tmp;
3071         int ntries;
3072
3073         DPRINTFN(WPI_DEBUG_HW,
3074             ("Resetting the card - clearing any uploaded firmware\n"));
3075
3076         /* clear any pending interrupts */
3077         WPI_WRITE(sc, WPI_INTR, 0xffffffff);
3078
3079         tmp = WPI_READ(sc, WPI_PLL_CTL);
3080         WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT);
3081
3082         tmp = WPI_READ(sc, WPI_CHICKEN);
3083         WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS);
3084
3085         tmp = WPI_READ(sc, WPI_GPIO_CTL);
3086         WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT);
3087
3088         /* wait for clock stabilization */
3089         for (ntries = 0; ntries < 25000; ntries++) {
3090                 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK)
3091                         break;
3092                 DELAY(10);
3093         }
3094         if (ntries == 25000) {
3095                 device_printf(sc->sc_dev,
3096                     "timeout waiting for clock stabilization\n");
3097                 return ETIMEDOUT;
3098         }
3099
3100         /* initialize EEPROM */
3101         tmp = WPI_READ(sc, WPI_EEPROM_STATUS);
3102
3103         if ((tmp & WPI_EEPROM_VERSION) == 0) {
3104                 device_printf(sc->sc_dev, "EEPROM not found\n");
3105                 return EIO;
3106         }
3107         WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED);
3108
3109         return 0;
3110 }
3111
3112 static void
3113 wpi_hw_config(struct wpi_softc *sc)
3114 {
3115         uint32_t rev, hw;
3116
3117         /* voodoo from the Linux "driver".. */
3118         hw = WPI_READ(sc, WPI_HWCONFIG);
3119
3120         rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1);
3121         if ((rev & 0xc0) == 0x40)
3122                 hw |= WPI_HW_ALM_MB;
3123         else if (!(rev & 0x80))
3124                 hw |= WPI_HW_ALM_MM;
3125
3126         if (sc->cap == 0x80)
3127                 hw |= WPI_HW_SKU_MRC;
3128
3129         hw &= ~WPI_HW_REV_D;
3130         if ((le16toh(sc->rev) & 0xf0) == 0xd0)
3131                 hw |= WPI_HW_REV_D;
3132
3133         if (sc->type > 1)
3134                 hw |= WPI_HW_TYPE_B;
3135
3136         WPI_WRITE(sc, WPI_HWCONFIG, hw);
3137 }
3138
3139 static void
3140 wpi_rfkill_resume(struct wpi_softc *sc)
3141 {
3142         struct ifnet *ifp = sc->sc_ifp;
3143         struct ieee80211com *ic = ifp->if_l2com;
3144         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3145         int ntries;
3146
3147         /* enable firmware again */
3148         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3149         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
3150
3151         /* wait for thermal sensors to calibrate */
3152         for (ntries = 0; ntries < 1000; ntries++) {
3153                 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
3154                         break;
3155                 DELAY(10);
3156         }
3157
3158         if (ntries == 1000) {
3159                 device_printf(sc->sc_dev,
3160                     "timeout waiting for thermal calibration\n");
3161                 return;
3162         }
3163         DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
3164
3165         if (wpi_config(sc) != 0) {
3166                 device_printf(sc->sc_dev, "device config failed\n");
3167                 return;
3168         }
3169
3170 #if defined(__DragonFly__)
3171         ifq_clr_oactive(&ifp->if_snd);
3172         ifp->if_flags |= IFF_RUNNING;
3173 #else
3174         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3175         ifp->if_drv_flags |= IFF_DRV_RUNNING;
3176 #endif
3177         sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3178
3179         if (vap != NULL) {
3180                 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
3181                         if (vap->iv_opmode != IEEE80211_M_MONITOR) {
3182                                 ieee80211_beacon_miss(ic);
3183                                 wpi_set_led(sc, WPI_LED_LINK, 0, 1);
3184                         } else
3185                                 wpi_set_led(sc, WPI_LED_LINK, 5, 5);
3186                 } else {
3187                         ieee80211_scan_next(vap);
3188                         wpi_set_led(sc, WPI_LED_LINK, 20, 2);
3189                 }
3190         }
3191
3192         callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
3193 }
3194
3195 static void
3196 wpi_init_locked(struct wpi_softc *sc, int force)
3197 {
3198         struct ifnet *ifp = sc->sc_ifp;
3199         uint32_t tmp;
3200         int ntries, qid;
3201
3202         wpi_stop_locked(sc);
3203         (void)wpi_reset(sc);
3204
3205         wpi_mem_lock(sc);
3206         wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00);
3207         DELAY(20);
3208         tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
3209         wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800);
3210         wpi_mem_unlock(sc);
3211
3212         (void)wpi_power_up(sc);
3213         wpi_hw_config(sc);
3214
3215         /* init Rx ring */
3216         wpi_mem_lock(sc);
3217         WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr);
3218         WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr +
3219             offsetof(struct wpi_shared, next));
3220         WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7);
3221         WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010);
3222         wpi_mem_unlock(sc);
3223
3224         /* init Tx rings */
3225         wpi_mem_lock(sc);
3226         wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */
3227         wpi_mem_write(sc, WPI_MEM_RA, 1);   /* enable RA0 */
3228         wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */
3229         wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000);
3230         wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002);
3231         wpi_mem_write(sc, WPI_MEM_MAGIC4, 4);
3232         wpi_mem_write(sc, WPI_MEM_MAGIC5, 5);
3233
3234         WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr);
3235         WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5);
3236
3237         for (qid = 0; qid < 6; qid++) {
3238                 WPI_WRITE(sc, WPI_TX_CTL(qid), 0);
3239                 WPI_WRITE(sc, WPI_TX_BASE(qid), 0);
3240                 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008);
3241         }
3242         wpi_mem_unlock(sc);
3243
3244         /* clear "radio off" and "disable command" bits (reversed logic) */
3245         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3246         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
3247         sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3248
3249         /* clear any pending interrupts */
3250         WPI_WRITE(sc, WPI_INTR, 0xffffffff);
3251
3252         /* enable interrupts */
3253         WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
3254
3255         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3256         WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3257
3258         if ((wpi_load_firmware(sc)) != 0) {
3259             device_printf(sc->sc_dev,
3260                 "A problem occurred loading the firmware to the driver\n");
3261             return;
3262         }
3263
3264         /* At this point the firmware is up and running. If the hardware
3265          * RF switch is turned off thermal calibration will fail, though
3266          * the card is still happy to continue to accept commands, catch
3267          * this case and schedule a task to watch for it to be turned on.
3268          */
3269         wpi_mem_lock(sc);
3270         tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
3271         wpi_mem_unlock(sc);
3272
3273         if (!(tmp & 0x1)) {
3274                 sc->flags |= WPI_FLAG_HW_RADIO_OFF;
3275                 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n");
3276                 goto out;
3277         }
3278
3279         /* wait for thermal sensors to calibrate */
3280         for (ntries = 0; ntries < 1000; ntries++) {
3281                 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
3282                         break;
3283                 DELAY(10);
3284         }
3285
3286         if (ntries == 1000) {
3287                 device_printf(sc->sc_dev,
3288                     "timeout waiting for thermal sensors calibration\n");
3289                 return;
3290         }
3291         DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
3292
3293         if (wpi_config(sc) != 0) {
3294                 device_printf(sc->sc_dev, "device config failed\n");
3295                 return;
3296         }
3297
3298 #if defined(__DragonFly__)
3299         ifq_clr_oactive(&ifp->if_snd);
3300         ifp->if_flags |= IFF_RUNNING;
3301 #else
3302         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3303         ifp->if_drv_flags |= IFF_DRV_RUNNING;
3304 #endif
3305 out:
3306         callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
3307 }
3308
3309 static void
3310 wpi_init(void *arg)
3311 {
3312         struct wpi_softc *sc = arg;
3313         struct ifnet *ifp = sc->sc_ifp;
3314         struct ieee80211com *ic = ifp->if_l2com;
3315
3316         WPI_LOCK(sc);
3317         wpi_init_locked(sc, 0);
3318         WPI_UNLOCK(sc);
3319
3320 #if defined(__DragonFly__)
3321         if (ifp->if_flags & IFF_RUNNING)
3322                 ieee80211_start_all(ic);                /* start all vaps */
3323 #else
3324         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
3325                 ieee80211_start_all(ic);                /* start all vaps */
3326 #endif
3327 }
3328
3329 static void
3330 wpi_stop_locked(struct wpi_softc *sc)
3331 {
3332         struct ifnet *ifp = sc->sc_ifp;
3333         uint32_t tmp;
3334         int ac;
3335
3336         sc->sc_tx_timer = 0;
3337         sc->sc_scan_timer = 0;
3338 #if defined(__DragonFly__)
3339         ifq_clr_oactive(&ifp->if_snd);
3340         ifp->if_flags &= ~IFF_RUNNING;
3341 #else
3342         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
3343 #endif
3344         sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3345         callout_stop_sync(&sc->watchdog_to);
3346         callout_stop_sync(&sc->calib_to);
3347
3348         /* disable interrupts */
3349         WPI_WRITE(sc, WPI_MASK, 0);
3350         WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK);
3351         WPI_WRITE(sc, WPI_INTR_STATUS, 0xff);
3352         WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000);
3353
3354         wpi_mem_lock(sc);
3355         wpi_mem_write(sc, WPI_MEM_MODE, 0);
3356         wpi_mem_unlock(sc);
3357
3358         /* reset all Tx rings */
3359         for (ac = 0; ac < 4; ac++)
3360                 wpi_reset_tx_ring(sc, &sc->txq[ac]);
3361         wpi_reset_tx_ring(sc, &sc->cmdq);
3362
3363         /* reset Rx ring */
3364         wpi_reset_rx_ring(sc, &sc->rxq);
3365
3366         wpi_mem_lock(sc);
3367         wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200);
3368         wpi_mem_unlock(sc);
3369
3370         DELAY(5);
3371
3372         wpi_stop_master(sc);
3373
3374         tmp = WPI_READ(sc, WPI_RESET);
3375         WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET);
3376         sc->flags &= ~WPI_FLAG_BUSY;
3377 }
3378
3379 static void
3380 wpi_stop(struct wpi_softc *sc)
3381 {
3382         WPI_LOCK(sc);
3383         wpi_stop_locked(sc);
3384         WPI_UNLOCK(sc);
3385 }
3386
3387 static void
3388 wpi_calib_timeout(void *arg)
3389 {
3390         struct wpi_softc *sc = arg;
3391         struct ifnet *ifp = sc->sc_ifp;
3392         struct ieee80211com *ic = ifp->if_l2com;
3393         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3394         int temp;
3395
3396         if (vap->iv_state != IEEE80211_S_RUN)
3397                 return;
3398
3399         /* update sensor data */
3400         temp = (int)WPI_READ(sc, WPI_TEMPERATURE);
3401         DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp));
3402
3403         wpi_power_calibration(sc, temp);
3404
3405         callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
3406 }
3407
3408 /*
3409  * This function is called periodically (every 60 seconds) to adjust output
3410  * power to temperature changes.
3411  */
3412 static void
3413 wpi_power_calibration(struct wpi_softc *sc, int temp)
3414 {
3415         struct ifnet *ifp = sc->sc_ifp;
3416         struct ieee80211com *ic = ifp->if_l2com;
3417         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3418
3419         /* sanity-check read value */
3420         if (temp < -260 || temp > 25) {
3421                 /* this can't be correct, ignore */
3422                 DPRINTFN(WPI_DEBUG_TEMP,
3423                     ("out-of-range temperature reported: %d\n", temp));
3424                 return;
3425         }
3426
3427         DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp));
3428
3429         /* adjust Tx power if need be */
3430         if (abs(temp - sc->temp) <= 6)
3431                 return;
3432
3433         sc->temp = temp;
3434
3435         if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) {
3436                 /* just warn, too bad for the automatic calibration... */
3437                 device_printf(sc->sc_dev,"could not adjust Tx power\n");
3438         }
3439 }
3440
3441 /**
3442  * Read the eeprom to find out what channels are valid for the given
3443  * band and update net80211 with what we find.
3444  */
3445 static void
3446 wpi_read_eeprom_channels(struct wpi_softc *sc, int n)
3447 {
3448         struct ifnet *ifp = sc->sc_ifp;
3449         struct ieee80211com *ic = ifp->if_l2com;
3450         const struct wpi_chan_band *band = &wpi_bands[n];
3451         struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND];
3452         struct ieee80211_channel *c;
3453         int chan, i, passive;
3454
3455         wpi_read_prom_data(sc, band->addr, channels,
3456             band->nchan * sizeof (struct wpi_eeprom_chan));
3457
3458         for (i = 0; i < band->nchan; i++) {
3459                 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) {
3460                         DPRINTFN(WPI_DEBUG_HW,
3461                             ("Channel Not Valid: %d, band %d\n",
3462                              band->chan[i],n));
3463                         continue;
3464                 }
3465
3466                 passive = 0;
3467                 chan = band->chan[i];
3468                 c = &ic->ic_channels[ic->ic_nchans++];
3469
3470                 /* is active scan allowed on this channel? */
3471                 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) {
3472                         passive = IEEE80211_CHAN_PASSIVE;
3473                 }
3474
3475                 if (n == 0) {   /* 2GHz band */
3476                         c->ic_ieee = chan;
3477                         c->ic_freq = ieee80211_ieee2mhz(chan,
3478                             IEEE80211_CHAN_2GHZ);
3479                         c->ic_flags = IEEE80211_CHAN_B | passive;
3480
3481                         c = &ic->ic_channels[ic->ic_nchans++];
3482                         c->ic_ieee = chan;
3483                         c->ic_freq = ieee80211_ieee2mhz(chan,
3484                             IEEE80211_CHAN_2GHZ);
3485                         c->ic_flags = IEEE80211_CHAN_G | passive;
3486
3487                 } else {        /* 5GHz band */
3488                         /*
3489                          * Some 3945ABG adapters support channels 7, 8, 11
3490                          * and 12 in the 2GHz *and* 5GHz bands.
3491                          * Because of limitations in our net80211(9) stack,
3492                          * we can't support these channels in 5GHz band.
3493                          * XXX not true; just need to map to proper frequency
3494                          */
3495                         if (chan <= 14)
3496                                 continue;
3497
3498                         c->ic_ieee = chan;
3499                         c->ic_freq = ieee80211_ieee2mhz(chan,
3500                             IEEE80211_CHAN_5GHZ);
3501                         c->ic_flags = IEEE80211_CHAN_A | passive;
3502                 }
3503
3504                 /* save maximum allowed power for this channel */
3505                 sc->maxpwr[chan] = channels[i].maxpwr;
3506
3507 #if 0
3508                 // XXX We can probably use this an get rid of maxpwr - ben 20070617
3509                 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr;
3510                 //ic->ic_channels[chan].ic_minpower...
3511                 //ic->ic_channels[chan].ic_maxregtxpower...
3512 #endif
3513
3514                 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d"
3515                     " passive=%d, offset %d\n", chan, c->ic_freq,
3516                     channels[i].flags, sc->maxpwr[chan],
3517                     (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0,
3518                     ic->ic_nchans));
3519         }
3520 }
3521
3522 static void
3523 wpi_read_eeprom_group(struct wpi_softc *sc, int n)
3524 {
3525         struct wpi_power_group *group = &sc->groups[n];
3526         struct wpi_eeprom_group rgroup;
3527         int i;
3528
3529         wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup,
3530             sizeof rgroup);
3531
3532         /* save power group information */
3533         group->chan   = rgroup.chan;
3534         group->maxpwr = rgroup.maxpwr;
3535         /* temperature at which the samples were taken */
3536         group->temp   = (int16_t)le16toh(rgroup.temp);
3537
3538         DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n,
3539                     group->chan, group->maxpwr, group->temp));
3540
3541         for (i = 0; i < WPI_SAMPLES_COUNT; i++) {
3542                 group->samples[i].index = rgroup.samples[i].index;
3543                 group->samples[i].power = rgroup.samples[i].power;
3544
3545                 DPRINTF(("\tsample %d: index=%d power=%d\n", i,
3546                             group->samples[i].index, group->samples[i].power));
3547         }
3548 }
3549
3550 /*
3551  * Update Tx power to match what is defined for channel `c'.
3552  */
3553 static int
3554 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async)
3555 {
3556         struct ifnet *ifp = sc->sc_ifp;
3557         struct ieee80211com *ic = ifp->if_l2com;
3558         struct wpi_power_group *group;
3559         struct wpi_cmd_txpower txpower;
3560         u_int chan;
3561         int i;
3562
3563         /* get channel number */
3564         chan = ieee80211_chan2ieee(ic, c);
3565
3566         /* find the power group to which this channel belongs */
3567         if (IEEE80211_IS_CHAN_5GHZ(c)) {
3568                 for (group = &sc->groups[1]; group < &sc->groups[4]; group++)
3569                         if (chan <= group->chan)
3570                                 break;
3571         } else
3572                 group = &sc->groups[0];
3573
3574         memset(&txpower, 0, sizeof txpower);
3575         txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1;
3576         txpower.channel = htole16(chan);
3577
3578         /* set Tx power for all OFDM and CCK rates */
3579         for (i = 0; i <= 11 ; i++) {
3580                 /* retrieve Tx power for this channel/rate combination */
3581                 int idx = wpi_get_power_index(sc, group, c,
3582                     wpi_ridx_to_rate[i]);
3583
3584                 txpower.rates[i].rate = wpi_ridx_to_plcp[i];
3585
3586                 if (IEEE80211_IS_CHAN_5GHZ(c)) {
3587                         txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx];
3588                         txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx];
3589                 } else {
3590                         txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx];
3591                         txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx];
3592                 }
3593                 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n",
3594                             chan, wpi_ridx_to_rate[i], idx));
3595         }
3596
3597         return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async);
3598 }
3599
3600 /*
3601  * Determine Tx power index for a given channel/rate combination.
3602  * This takes into account the regulatory information from EEPROM and the
3603  * current temperature.
3604  */
3605 static int
3606 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group,
3607     struct ieee80211_channel *c, int rate)
3608 {
3609 /* fixed-point arithmetic division using a n-bit fractional part */
3610 #define fdivround(a, b, n)      \
3611         ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
3612
3613 /* linear interpolation */
3614 #define interpolate(x, x1, y1, x2, y2, n)       \
3615         ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
3616
3617         struct ifnet *ifp = sc->sc_ifp;
3618         struct ieee80211com *ic = ifp->if_l2com;
3619         struct wpi_power_sample *sample;
3620         int pwr, idx;
3621         u_int chan;
3622
3623         /* get channel number */
3624         chan = ieee80211_chan2ieee(ic, c);
3625
3626         /* default power is group's maximum power - 3dB */
3627         pwr = group->maxpwr / 2;
3628
3629         /* decrease power for highest OFDM rates to reduce distortion */
3630         switch (rate) {
3631                 case 72:        /* 36Mb/s */
3632                         pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 :  5;
3633                         break;
3634                 case 96:        /* 48Mb/s */
3635                         pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10;
3636                         break;
3637                 case 108:       /* 54Mb/s */
3638                         pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12;
3639                         break;
3640         }
3641
3642         /* never exceed channel's maximum allowed Tx power */
3643         pwr = min(pwr, sc->maxpwr[chan]);
3644
3645         /* retrieve power index into gain tables from samples */
3646         for (sample = group->samples; sample < &group->samples[3]; sample++)
3647                 if (pwr > sample[1].power)
3648                         break;
3649         /* fixed-point linear interpolation using a 19-bit fractional part */
3650         idx = interpolate(pwr, sample[0].power, sample[0].index,
3651             sample[1].power, sample[1].index, 19);
3652
3653         /*
3654          *  Adjust power index based on current temperature
3655          *      - if colder than factory-calibrated: decreate output power
3656          *      - if warmer than factory-calibrated: increase output power
3657          */
3658         idx -= (sc->temp - group->temp) * 11 / 100;
3659
3660         /* decrease power for CCK rates (-5dB) */
3661         if (!WPI_RATE_IS_OFDM(rate))
3662                 idx += 10;
3663
3664         /* keep power index in a valid range */
3665         if (idx < 0)
3666                 return 0;
3667         if (idx > WPI_MAX_PWR_INDEX)
3668                 return WPI_MAX_PWR_INDEX;
3669         return idx;
3670
3671 #undef interpolate
3672 #undef fdivround
3673 }
3674
3675 /**
3676  * Called by net80211 framework to indicate that a scan
3677  * is starting. This function doesn't actually do the scan,
3678  * wpi_scan_curchan starts things off. This function is more
3679  * of an early warning from the framework we should get ready
3680  * for the scan.
3681  */
3682 static void
3683 wpi_scan_start(struct ieee80211com *ic)
3684 {
3685         struct ifnet *ifp = ic->ic_ifp;
3686         struct wpi_softc *sc = ifp->if_softc;
3687
3688         WPI_LOCK(sc);
3689         wpi_set_led(sc, WPI_LED_LINK, 20, 2);
3690         WPI_UNLOCK(sc);
3691 }
3692
3693 /**
3694  * Called by the net80211 framework, indicates that the
3695  * scan has ended. If there is a scan in progress on the card
3696  * then it should be aborted.
3697  */
3698 static void
3699 wpi_scan_end(struct ieee80211com *ic)
3700 {
3701         /* XXX ignore */
3702 }
3703
3704 /**
3705  * Called by the net80211 framework to indicate to the driver
3706  * that the channel should be changed
3707  */
3708 static void
3709 wpi_set_channel(struct ieee80211com *ic)
3710 {
3711         struct ifnet *ifp = ic->ic_ifp;
3712         struct wpi_softc *sc = ifp->if_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 ifnet *ifp = vap->iv_ic->ic_ifp;
3739         struct wpi_softc *sc = ifp->if_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);