sys/dev/netif/bwi/if_bwi.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/bitops.h>
  37 #include <sys/endian.h>
  38 #include <sys/kernel.h>
  39 #include <sys/bus.h>
  40 #include <sys/interrupt.h>
  41 #include <sys/malloc.h>
  42 #include <sys/proc.h>
  43 #include <sys/rman.h>
  44 #include <sys/serialize.h>
  45 #include <sys/socket.h>
  46 #include <sys/sockio.h>
  47 #include <sys/sysctl.h>
  48
  49 #include <net/ethernet.h>
  50 #include <net/if.h>
  51 #include <net/bpf.h>
  52 #include <net/if_arp.h>
  53 #include <net/if_dl.h>
  54 #include <net/if_media.h>
  55 #include <net/ifq_var.h>
  56
  57 #include <netproto/802_11/ieee80211_radiotap.h>
  58 #include <netproto/802_11/ieee80211_var.h>
  59 #include <netproto/802_11/wlan_ratectl/onoe/ieee80211_onoe_param.h>
  60
  61 #include <bus/pci/pcireg.h>
  62 #include <bus/pci/pcivar.h>
  63 #include <bus/pci/pcidevs.h>
  64
  65 #include <dev/netif/bwi/if_bwireg.h>
  66 #include <dev/netif/bwi/if_bwivar.h>
  67 #include <dev/netif/bwi/bwimac.h>
  68 #include <dev/netif/bwi/bwirf.h>
  69
  70 struct bwi_clock_freq {
  71         u_int           clkfreq_min;
  72         u_int           clkfreq_max;
  73 };
  74
  75 struct bwi_myaddr_bssid {
  76         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  77         uint8_t         bssid[IEEE80211_ADDR_LEN];
  78 } __packed;
  79
  80 static int      bwi_probe(device_t);
  81 static int      bwi_attach(device_t);
  82 static int      bwi_detach(device_t);
  83 static int      bwi_shutdown(device_t);
  84
  85 static void     bwi_init(void *);
  86 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
  87 static void     bwi_start(struct ifnet *);
  88 static void     bwi_watchdog(struct ifnet *);
  89 static int      bwi_newstate(struct ieee80211com *, enum ieee80211_state, int);
  90 static void     bwi_updateslot(struct ifnet *);
  91 static int      bwi_media_change(struct ifnet *);
  92 static void     *bwi_ratectl_attach(struct ieee80211com *, u_int);
  93
  94 static void     bwi_next_scan(void *);
  95 static void     bwi_calibrate(void *);
  96
  97 static void     bwi_newstate_begin(struct bwi_softc *, enum ieee80211_state);
  98 static void     bwi_init_statechg(struct bwi_softc *, int);
  99 static int      bwi_stop(struct bwi_softc *, int);
 100 static int      bwi_newbuf(struct bwi_softc *, int, int);
 101 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 102                           struct ieee80211_node **, int);
 103
 104 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 105                                        bus_addr_t, int, int);
 106 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 107
 108 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 109 static int      bwi_init_rx_ring32(struct bwi_softc *);
 110 static int      bwi_init_txstats32(struct bwi_softc *);
 111 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 112 static void     bwi_free_rx_ring32(struct bwi_softc *);
 113 static void     bwi_free_txstats32(struct bwi_softc *);
 114 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 115 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 116                                     int, bus_addr_t, int);
 117 static int      bwi_rxeof32(struct bwi_softc *);
 118 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 119 static void     bwi_txeof_status32(struct bwi_softc *);
 120
 121 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 122 static int      bwi_init_rx_ring64(struct bwi_softc *);
 123 static int      bwi_init_txstats64(struct bwi_softc *);
 124 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 125 static void     bwi_free_rx_ring64(struct bwi_softc *);
 126 static void     bwi_free_txstats64(struct bwi_softc *);
 127 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 128 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 129                                     int, bus_addr_t, int);
 130 static int      bwi_rxeof64(struct bwi_softc *);
 131 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 132 static void     bwi_txeof_status64(struct bwi_softc *);
 133
 134 static void     bwi_intr(void *);
 135 static int      bwi_rxeof(struct bwi_softc *, int);
 136 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 137 static void     bwi_txeof(struct bwi_softc *);
 138 static void     bwi_txeof_status(struct bwi_softc *, int);
 139 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 140 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 141 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 142 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 143                                 struct bwi_rxbuf_hdr *, const void *, int, int);
 144
 145 static int      bwi_dma_alloc(struct bwi_softc *);
 146 static void     bwi_dma_free(struct bwi_softc *);
 147 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 148                                    struct bwi_ring_data *, bus_size_t,
 149                                    uint32_t);
 150 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 151 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 152 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 153 static void     bwi_dma_txstats_free(struct bwi_softc *);
 154 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 155 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 156                                  bus_size_t, int);
 157
 158 static void     bwi_power_on(struct bwi_softc *, int);
 159 static int      bwi_power_off(struct bwi_softc *, int);
 160 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 161 static int      bwi_set_clock_delay(struct bwi_softc *);
 162 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 163 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 164 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 165                                     const uint8_t *);
 166 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 167 static int      bwi_set_chan(struct bwi_softc *, struct ieee80211_channel *);
 168
 169 static void     bwi_get_card_flags(struct bwi_softc *);
 170 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 171
 172 static int      bwi_bus_attach(struct bwi_softc *);
 173 static int      bwi_bbp_attach(struct bwi_softc *);
 174 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 175 static void     bwi_bbp_power_off(struct bwi_softc *);
 176
 177 static const char *bwi_regwin_name(const struct bwi_regwin *);
 178 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 179 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 180 static int      bwi_regwin_select(struct bwi_softc *, int);
 181
 182 static void     bwi_led_attach(struct bwi_softc *);
 183 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 184 static void     bwi_led_event(struct bwi_softc *, int);
 185 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 186 static void     bwi_led_blink_next(void *);
 187 static void     bwi_led_blink_end(void *);
 188
 189 static const struct bwi_dev {
 190         uint16_t        vid;
 191         uint16_t        did;
 192         const char      *desc;
 193 } bwi_devices[] = {
 194         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4301,
 195           "Broadcom BCM4301 802.11 Wireless Lan" },
 196
 197         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307,
 198           "Broadcom BCM4307 802.11 Wireless Lan" },
 199
 200         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4311,
 201           "Broadcom BCM4311 802.11 Wireless Lan" },
 202
 203         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4312,
 204           "Broadcom BCM4312 802.11 Wireless Lan" },
 205
 206         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_1,
 207           "Broadcom BCM4306 802.11 Wireless Lan" },
 208
 209         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2,
 210           "Broadcom BCM4306 802.11 Wireless Lan" },
 211
 212         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_3,
 213           "Broadcom BCM4306 802.11 Wireless Lan" },
 214
 215         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309,
 216           "Broadcom BCM4309 802.11 Wireless Lan" },
 217
 218         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318,
 219           "Broadcom BCM4318 802.11 Wireless Lan" },
 220
 221         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319,
 222           "Broadcom BCM4319 802.11 Wireless Lan" }
 223 };
 224
 225 static device_method_t bwi_methods[] = {
 226         DEVMETHOD(device_probe,         bwi_probe),
 227         DEVMETHOD(device_attach,        bwi_attach),
 228         DEVMETHOD(device_detach,        bwi_detach),
 229         DEVMETHOD(device_shutdown,      bwi_shutdown),
 230 #if 0
 231         DEVMETHOD(device_suspend,       bwi_suspend),
 232         DEVMETHOD(device_resume,        bwi_resume),
 233 #endif
 234         { 0, 0 }
 235 };
 236
 237 static driver_t bwi_driver = {
 238         "bwi",
 239         bwi_methods,
 240         sizeof(struct bwi_softc)
 241 };
 242
 243 static devclass_t bwi_devclass;
 244
 245 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, NULL, NULL);
 246 DRIVER_MODULE(bwi, cardbus, bwi_driver, bwi_devclass, NULL, NULL);
 247
 248 MODULE_DEPEND(bwi, wlan, 1, 1, 1);
 249 MODULE_DEPEND(bwi, wlan_ratectl_onoe, 1, 1, 1);
 250 #if 0
 251 MODULE_DEPEND(bwi, wlan_ratectl_amrr, 1, 1, 1);
 252 #endif
 253 MODULE_DEPEND(bwi, pci, 1, 1, 1);
 254 MODULE_DEPEND(bwi, cardbus, 1, 1, 1);
 255
 256 static const struct {
 257         uint16_t        did_min;
 258         uint16_t        did_max;
 259         uint16_t        bbp_id;
 260 } bwi_bbpid_map[] = {
 261         { 0x4301, 0x4301, 0x4301 },
 262         { 0x4305, 0x4307, 0x4307 },
 263         { 0x4403, 0x4403, 0x4402 },
 264         { 0x4610, 0x4615, 0x4610 },
 265         { 0x4710, 0x4715, 0x4710 },
 266         { 0x4720, 0x4725, 0x4309 }
 267 };
 268
 269 static const struct {
 270         uint16_t        bbp_id;
 271         int             nregwin;
 272 } bwi_regwin_count[] = {
 273         { 0x4301, 5 },
 274         { 0x4306, 6 },
 275         { 0x4307, 5 },
 276         { 0x4310, 8 },
 277         { 0x4401, 3 },
 278         { 0x4402, 3 },
 279         { 0x4610, 9 },
 280         { 0x4704, 9 },
 281         { 0x4710, 9 },
 282         { 0x5365, 7 }
 283 };
 284
 285 #define CLKSRC(src)                             \
 286 [BWI_CLKSRC_ ## src] = {                        \
 287         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 288         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 289 }
 290
 291 static const struct {
 292         u_int   freq_min;
 293         u_int   freq_max;
 294 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 295         CLKSRC(LP_OSC),
 296         CLKSRC(CS_OSC),
 297         CLKSRC(PCI)
 298 };
 299
 300 #undef CLKSRC
 301
 302 #define VENDOR_LED_ACT(vendor)                          \
 303 {                                                       \
 304         .vid = PCI_VENDOR_##vendor,                     \
 305         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 306 }
 307
 308 static const struct {
 309         uint16_t        vid;
 310         uint8_t         led_act[BWI_LED_MAX];
 311 } bwi_vendor_led_act[] = {
 312         VENDOR_LED_ACT(COMPAQ),
 313         VENDOR_LED_ACT(LINKSYS)
 314 };
 315
 316 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 317         { BWI_VENDOR_LED_ACT_DEFAULT };
 318
 319 #undef VENDOR_LED_ACT
 320
 321 static const struct {
 322         int     on_dur;
 323         int     off_dur;
 324 } bwi_led_duration[109] = {
 325         [0]     = { 400, 100 },
 326         [2]     = { 150, 75 },
 327         [4]     = { 90, 45 },
 328         [11]    = { 66, 34 },
 329         [12]    = { 53, 26 },
 330         [18]    = { 42, 21 },
 331         [22]    = { 35, 17 },
 332         [24]    = { 32, 16 },
 333         [36]    = { 21, 10 },
 334         [48]    = { 16, 8 },
 335         [72]    = { 11, 5 },
 336         [96]    = { 9, 4 },
 337         [108]   = { 7, 3 }
 338 };
 339
 340 #ifdef BWI_DEBUG
 341 #ifdef BWI_DEBUG_VERBOSE
 342 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 343 #else
 344 static uint32_t bwi_debug;
 345 #endif
 346 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 347 #endif  /* BWI_DEBUG */
 348
 349 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 350
 351 static const struct ieee80211_rateset bwi_rateset_11b =
 352         { 4, { 2, 4, 11, 22 } };
 353 static const struct ieee80211_rateset bwi_rateset_11g =
 354         { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
 355
 356 uint16_t
 357 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 358 {
 359         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 360 }
 361
 362 static __inline void
 363 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 364                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 365                  int tx)
 366 {
 367         struct bwi_desc32 *desc = &desc_array[desc_idx];
 368         uint32_t ctrl, addr, addr_hi, addr_lo;
 369
 370         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 371         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 372
 373         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 374                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 375
 376         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 377                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 378         if (desc_idx == ndesc - 1)
 379                 ctrl |= BWI_DESC32_C_EOR;
 380         if (tx) {
 381                 /* XXX */
 382                 ctrl |= BWI_DESC32_C_FRAME_START |
 383                         BWI_DESC32_C_FRAME_END |
 384                         BWI_DESC32_C_INTR;
 385         }
 386
 387         desc->addr = htole32(addr);
 388         desc->ctrl = htole32(ctrl);
 389 }
 390
 391 /* XXX does not belong here */
 392 uint8_t
 393 bwi_rate2plcp(uint8_t rate)
 394 {
 395         rate &= IEEE80211_RATE_VAL;
 396
 397         switch (rate) {
 398         case 2:         return 0xa;
 399         case 4:         return 0x14;
 400         case 11:        return 0x37;
 401         case 22:        return 0x6e;
 402         case 44:        return 0xdc;
 403
 404         case 12:        return 0xb;
 405         case 18:        return 0xf;
 406         case 24:        return 0xa;
 407         case 36:        return 0xe;
 408         case 48:        return 0x9;
 409         case 72:        return 0xd;
 410         case 96:        return 0x8;
 411         case 108:       return 0xc;
 412
 413         default:
 414                 panic("unsupported rate %u\n", rate);
 415         }
 416 }
 417
 418 /* XXX does not belong here */
 419 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
 420 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
 421
 422 static __inline void
 423 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
 424 {
 425         uint32_t plcp;
 426
 427         plcp = __SHIFTIN(bwi_rate2plcp(rate), IEEE80211_OFDM_PLCP_RATE_MASK) |
 428                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
 429         *plcp0 = htole32(plcp);
 430 }
 431
 432 /* XXX does not belong here */
 433 struct ieee80211_ds_plcp_hdr {
 434         uint8_t         i_signal;
 435         uint8_t         i_service;
 436         uint16_t        i_length;
 437         uint16_t        i_crc;
 438 } __packed;
 439
 440 #define IEEE80211_DS_PLCP_SERVICE_LOCKED        0x04
 441 #define IEEE80211_DS_PLCL_SERVICE_PBCC          0x08
 442 #define IEEE80211_DS_PLCP_SERVICE_LENEXT5       0x20
 443 #define IEEE80211_DS_PLCP_SERVICE_LENEXT6       0x40
 444 #define IEEE80211_DS_PLCP_SERVICE_LENEXT7       0x80
 445
 446 static __inline void
 447 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
 448                    uint8_t rate)
 449 {
 450         int len, service, pkt_bitlen;
 451
 452         pkt_bitlen = pkt_len * NBBY;
 453         len = howmany(pkt_bitlen * 2, rate);
 454
 455         service = IEEE80211_DS_PLCP_SERVICE_LOCKED;
 456         if (rate == (11 * 2)) {
 457                 int pkt_bitlen1;
 458
 459                 /*
 460                  * PLCP service field needs to be adjusted,
 461                  * if TX rate is 11Mbytes/s
 462                  */
 463                 pkt_bitlen1 = len * 11;
 464                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
 465                         service |= IEEE80211_DS_PLCP_SERVICE_LENEXT7;
 466         }
 467
 468         plcp->i_signal = bwi_rate2plcp(rate);
 469         plcp->i_service = service;
 470         plcp->i_length = htole16(len);
 471         /* NOTE: do NOT touch i_crc */
 472 }
 473
 474 static __inline void
 475 bwi_plcp_header(void *plcp, int pkt_len, uint8_t rate)
 476 {
 477         enum ieee80211_modtype modtype;
 478
 479         /*
 480          * Assume caller has zeroed 'plcp'
 481          */
 482
 483         modtype = ieee80211_rate2modtype(rate);
 484         if (modtype == IEEE80211_MODTYPE_OFDM)
 485                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
 486         else if (modtype == IEEE80211_MODTYPE_DS)
 487                 bwi_ds_plcp_header(plcp, pkt_len, rate);
 488         else
 489                 panic("unsupport modulation type %u\n", modtype);
 490 }
 491
 492 static __inline uint8_t
 493 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
 494 {
 495         uint32_t plcp;
 496         uint8_t plcp_rate;
 497
 498         plcp = le32toh(*plcp0);
 499         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
 500         return ieee80211_plcp2rate(plcp_rate, 1);
 501 }
 502
 503 static __inline uint8_t
 504 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
 505 {
 506         return ieee80211_plcp2rate(hdr->i_signal, 0);
 507 }
 508
 509 static int
 510 bwi_probe(device_t dev)
 511 {
 512         const struct bwi_dev *b;
 513         uint16_t did, vid;
 514
 515         did = pci_get_device(dev);
 516         vid = pci_get_vendor(dev);
 517
 518         for (b = bwi_devices; b->desc != NULL; ++b) {
 519                 if (b->did == did && b->vid == vid) {
 520                         device_set_desc(dev, b->desc);
 521                         return 0;
 522                 }
 523         }
 524         return ENXIO;
 525 }
 526
 527 static int
 528 bwi_attach(device_t dev)
 529 {
 530         struct bwi_softc *sc = device_get_softc(dev);
 531         struct ieee80211com *ic = &sc->sc_ic;
 532         struct ifnet *ifp = &ic->ic_if;
 533         struct bwi_mac *mac;
 534         struct bwi_phy *phy;
 535         int i, error;
 536
 537         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 538         sc->sc_dev = dev;
 539
 540         /*
 541          * Initialize sysctl variables
 542          */
 543         sc->sc_fw_version = BWI_FW_VERSION3;
 544         sc->sc_dwell_time = 200;
 545         sc->sc_led_idle = (2350 * hz) / 1000;
 546         sc->sc_led_blink = 1;
 547         sc->sc_txpwr_calib = 1;
 548 #ifdef BWI_DEBUG
 549         sc->sc_debug = bwi_debug;
 550 #endif
 551
 552         callout_init(&sc->sc_scan_ch);
 553         callout_init(&sc->sc_calib_ch);
 554
 555 #ifndef BURN_BRIDGES
 556         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 557                 uint32_t irq, mem;
 558
 559                 /* XXX Save more PCIR */
 560                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 561                 mem = pci_read_config(dev, BWI_PCIR_BAR, 4);
 562
 563                 device_printf(dev, "chip is in D%d power mode "
 564                     "-- setting to D0\n", pci_get_powerstate(dev));
 565
 566                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 567
 568                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 569                 pci_write_config(dev, BWI_PCIR_BAR, mem, 4);
 570         }
 571 #endif  /* !BURN_BRIDGE */
 572
 573         pci_enable_busmaster(dev);
 574
 575         /* Get more PCI information */
 576         sc->sc_pci_revid = pci_get_revid(dev);
 577         sc->sc_pci_subvid = pci_get_subvendor(dev);
 578         sc->sc_pci_subdid = pci_get_subdevice(dev);
 579
 580         /*
 581          * Allocate IO memory
 582          */
 583         sc->sc_mem_rid = BWI_PCIR_BAR;
 584         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 585                                                 &sc->sc_mem_rid, RF_ACTIVE);
 586         if (sc->sc_mem_res == NULL) {
 587                 device_printf(dev, "can't allocate IO memory\n");
 588                 return ENXIO;
 589         }
 590         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
 591         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
 592
 593         /*
 594          * Allocate IRQ
 595          */
 596         sc->sc_irq_rid = 0;
 597         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 598                                                 &sc->sc_irq_rid,
 599                                                 RF_SHAREABLE | RF_ACTIVE);
 600         if (sc->sc_irq_res == NULL) {
 601                 device_printf(dev, "can't allocate irq\n");
 602                 error = ENXIO;
 603                 goto fail;
 604         }
 605
 606         /*
 607          * Create sysctl tree
 608          */
 609         sysctl_ctx_init(&sc->sc_sysctl_ctx);
 610         sc->sc_sysctl_tree = SYSCTL_ADD_NODE(&sc->sc_sysctl_ctx,
 611                                              SYSCTL_STATIC_CHILDREN(_hw),
 612                                              OID_AUTO,
 613                                              device_get_nameunit(dev),
 614                                              CTLFLAG_RD, 0, "");
 615         if (sc->sc_sysctl_tree == NULL) {
 616                 device_printf(dev, "can't add sysctl node\n");
 617                 error = ENXIO;
 618                 goto fail;
 619         }
 620
 621         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 622                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 623                         "dwell_time", CTLFLAG_RW, &sc->sc_dwell_time, 0,
 624                         "Channel dwell time during scan (msec)");
 625         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 626                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 627                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 628                         "Firmware version");
 629         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 630                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 631                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 632                         "# ticks before LED enters idle state");
 633         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 634                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 635                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 636                        "Allow LED to blink");
 637         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 638                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 639                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 640                        "Enable software TX power calibration");
 641 #ifdef BWI_DEBUG
 642         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 643                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 644                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 645 #endif
 646
 647         bwi_power_on(sc, 1);
 648
 649         error = bwi_bbp_attach(sc);
 650         if (error)
 651                 goto fail;
 652
 653         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 654         if (error)
 655                 goto fail;
 656
 657         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 658                 error = bwi_set_clock_delay(sc);
 659                 if (error)
 660                         goto fail;
 661
 662                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 663                 if (error)
 664                         goto fail;
 665
 666                 error = bwi_get_pwron_delay(sc);
 667                 if (error)
 668                         goto fail;
 669         }
 670
 671         error = bwi_bus_attach(sc);
 672         if (error)
 673                 goto fail;
 674
 675         bwi_get_card_flags(sc);
 676
 677         bwi_led_attach(sc);
 678
 679         for (i = 0; i < sc->sc_nmac; ++i) {
 680                 struct bwi_regwin *old;
 681
 682                 mac = &sc->sc_mac[i];
 683                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 684                 if (error)
 685                         goto fail;
 686
 687                 error = bwi_mac_lateattach(mac);
 688                 if (error)
 689                         goto fail;
 690
 691                 error = bwi_regwin_switch(sc, old, NULL);
 692                 if (error)
 693                         goto fail;
 694         }
 695
 696         /*
 697          * XXX First MAC is known to exist
 698          * TODO2
 699          */
 700         mac = &sc->sc_mac[0];
 701         phy = &mac->mac_phy;
 702
 703         bwi_bbp_power_off(sc);
 704
 705         error = bwi_dma_alloc(sc);
 706         if (error)
 707                 goto fail;
 708
 709         ifp->if_softc = sc;
 710         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 711         ifp->if_init = bwi_init;
 712         ifp->if_ioctl = bwi_ioctl;
 713         ifp->if_start = bwi_start;
 714         ifp->if_watchdog = bwi_watchdog;
 715         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 716         ifq_set_ready(&ifp->if_snd);
 717
 718         /* Get locale */
 719         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 720                                    BWI_SPROM_CARD_INFO_LOCALE);
 721         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 722
 723         /*
 724          * Setup ratesets, phytype, channels and get MAC address
 725          */
 726         if (phy->phy_mode == IEEE80211_MODE_11B ||
 727             phy->phy_mode == IEEE80211_MODE_11G) {
 728                 uint16_t chan_flags;
 729
 730                 ic->ic_sup_rates[IEEE80211_MODE_11B] = bwi_rateset_11b;
 731
 732                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 733                         chan_flags = IEEE80211_CHAN_B;
 734                         ic->ic_phytype = IEEE80211_T_DS;
 735                 } else {
 736                         chan_flags = IEEE80211_CHAN_CCK |
 737                                      IEEE80211_CHAN_OFDM |
 738                                      IEEE80211_CHAN_DYN |
 739                                      IEEE80211_CHAN_2GHZ;
 740                         ic->ic_phytype = IEEE80211_T_OFDM;
 741                         ic->ic_sup_rates[IEEE80211_MODE_11G] =
 742                                 bwi_rateset_11g;
 743                 }
 744
 745                 /* XXX depend on locale */
 746                 for (i = 1; i <= 14; ++i) {
 747                         ic->ic_channels[i].ic_freq =
 748                                 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 749                         ic->ic_channels[i].ic_flags = chan_flags;
 750                 }
 751
 752                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, ic->ic_myaddr);
 753                 if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 754                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, ic->ic_myaddr);
 755                         if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 756                                 device_printf(dev, "invalid MAC address: "
 757                                         "%6D\n", ic->ic_myaddr, ":");
 758                         }
 759                 }
 760         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 761                 /* TODO:11A */
 762                 error = ENXIO;
 763                 goto fail;
 764         } else {
 765                 panic("unknown phymode %d\n", phy->phy_mode);
 766         }
 767
 768         ic->ic_caps = IEEE80211_C_SHSLOT |
 769                       IEEE80211_C_SHPREAMBLE |
 770                       IEEE80211_C_WPA |
 771                       IEEE80211_C_MONITOR;
 772         ic->ic_state = IEEE80211_S_INIT;
 773         ic->ic_opmode = IEEE80211_M_STA;
 774
 775         IEEE80211_ONOE_PARAM_SETUP(&sc->sc_onoe_param);
 776         ic->ic_ratectl.rc_st_ratectl_cap = IEEE80211_RATECTL_CAP_ONOE;
 777         ic->ic_ratectl.rc_st_ratectl = IEEE80211_RATECTL_ONOE;
 778         ic->ic_ratectl.rc_st_attach = bwi_ratectl_attach;
 779
 780         ic->ic_updateslot = bwi_updateslot;
 781
 782         ieee80211_ifattach(ic);
 783
 784         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 785         ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
 786
 787         sc->sc_newstate = ic->ic_newstate;
 788         ic->ic_newstate = bwi_newstate;
 789
 790         ieee80211_media_init(ic, bwi_media_change, ieee80211_media_status);
 791
 792         /*
 793          * Attach radio tap
 794          */
 795         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 796                       sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
 797                       &sc->sc_drvbpf);
 798
 799         sc->sc_tx_th_len = roundup(sizeof(sc->sc_tx_th), sizeof(uint32_t));
 800         sc->sc_tx_th.wt_ihdr.it_len = htole16(sc->sc_tx_th_len);
 801         sc->sc_tx_th.wt_ihdr.it_present = htole32(BWI_TX_RADIOTAP_PRESENT);
 802
 803         sc->sc_rx_th_len = roundup(sizeof(sc->sc_rx_th), sizeof(uint32_t));
 804         sc->sc_rx_th.wr_ihdr.it_len = htole16(sc->sc_rx_th_len);
 805         sc->sc_rx_th.wr_ihdr.it_present = htole32(BWI_RX_RADIOTAP_PRESENT);
 806
 807         error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, bwi_intr, sc,
 808                                &sc->sc_irq_handle, ifp->if_serializer);
 809         if (error) {
 810                 device_printf(dev, "can't setup intr\n");
 811                 bpfdetach(ifp);
 812                 ieee80211_ifdetach(ic);
 813                 goto fail;
 814         }
 815
 816         ifp->if_cpuid = rman_get_cpuid(sc->sc_irq_res);
 817         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
 818
 819         if (bootverbose)
 820                 ieee80211_announce(ic);
 821
 822         return 0;
 823 fail:
 824         bwi_detach(dev);
 825         return error;
 826 }
 827
 828 static int
 829 bwi_detach(device_t dev)
 830 {
 831         struct bwi_softc *sc = device_get_softc(dev);
 832
 833         if (device_is_attached(dev)) {
 834                 struct ifnet *ifp = &sc->sc_ic.ic_if;
 835                 int i;
 836
 837                 lwkt_serialize_enter(ifp->if_serializer);
 838                 bwi_stop(sc, 1);
 839                 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 840                 lwkt_serialize_exit(ifp->if_serializer);
 841
 842                 bpfdetach(ifp);
 843                 ieee80211_ifdetach(&sc->sc_ic);
 844
 845                 for (i = 0; i < sc->sc_nmac; ++i)
 846                         bwi_mac_detach(&sc->sc_mac[i]);
 847         }
 848
 849         if (sc->sc_sysctl_tree != NULL)
 850                 sysctl_ctx_free(&sc->sc_sysctl_ctx);
 851
 852         if (sc->sc_irq_res != NULL) {
 853                 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
 854                                      sc->sc_irq_res);
 855         }
 856
 857         if (sc->sc_mem_res != NULL) {
 858                 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid,
 859                                      sc->sc_mem_res);
 860         }
 861
 862         bwi_dma_free(sc);
 863
 864         return 0;
 865 }
 866
 867 static int
 868 bwi_shutdown(device_t dev)
 869 {
 870         struct bwi_softc *sc = device_get_softc(dev);
 871         struct ifnet *ifp = &sc->sc_ic.ic_if;
 872
 873         lwkt_serialize_enter(ifp->if_serializer);
 874         bwi_stop(sc, 1);
 875         lwkt_serialize_exit(ifp->if_serializer);
 876         return 0;
 877 }
 878
 879 static void
 880 bwi_power_on(struct bwi_softc *sc, int with_pll)
 881 {
 882         uint32_t gpio_in, gpio_out, gpio_en;
 883         uint16_t status;
 884
 885         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 886         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 887                 goto back;
 888
 889         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 890         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 891
 892         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 893         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 894         if (with_pll) {
 895                 /* Turn off PLL first */
 896                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 897                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 898         }
 899
 900         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 901         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 902         DELAY(1000);
 903
 904         if (with_pll) {
 905                 /* Turn on PLL */
 906                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 907                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 908                 DELAY(5000);
 909         }
 910
 911 back:
 912         /* Clear "Signaled Target Abort" */
 913         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 914         status &= ~PCIM_STATUS_STABORT;
 915         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 916 }
 917
 918 static int
 919 bwi_power_off(struct bwi_softc *sc, int with_pll)
 920 {
 921         uint32_t gpio_out, gpio_en;
 922
 923         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 924         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 925         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 926
 927         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 928         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 929         if (with_pll) {
 930                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 931                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 932         }
 933
 934         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 935         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 936         return 0;
 937 }
 938
 939 int
 940 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 941                   struct bwi_regwin **old_rw)
 942 {
 943         int error;
 944
 945         if (old_rw != NULL)
 946                 *old_rw = NULL;
 947
 948         if (!BWI_REGWIN_EXIST(rw))
 949                 return EINVAL;
 950
 951         if (sc->sc_cur_regwin != rw) {
 952                 error = bwi_regwin_select(sc, rw->rw_id);
 953                 if (error) {
 954                         if_printf(&sc->sc_ic.ic_if, "can't select regwin %d\n",
 955                                   rw->rw_id);
 956                         return error;
 957                 }
 958         }
 959
 960         if (old_rw != NULL)
 961                 *old_rw = sc->sc_cur_regwin;
 962         sc->sc_cur_regwin = rw;
 963         return 0;
 964 }
 965
 966 static int
 967 bwi_regwin_select(struct bwi_softc *sc, int id)
 968 {
 969         uint32_t win = BWI_PCIM_REGWIN(id);
 970         int i;
 971
 972 #define RETRY_MAX       50
 973         for (i = 0; i < RETRY_MAX; ++i) {
 974                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 975                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 976                         return 0;
 977                 DELAY(10);
 978         }
 979 #undef RETRY_MAX
 980
 981         return ENXIO;
 982 }
 983
 984 static void
 985 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 986 {
 987         uint32_t val;
 988
 989         val = CSR_READ_4(sc, BWI_ID_HI);
 990         *type = BWI_ID_HI_REGWIN_TYPE(val);
 991         *rev = BWI_ID_HI_REGWIN_REV(val);
 992
 993         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 994                 "vendor 0x%04x\n", *type, *rev,
 995                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 996 }
 997
 998 static int
 999 bwi_bbp_attach(struct bwi_softc *sc)
1000 {
1001         uint16_t bbp_id, rw_type;
1002         uint8_t rw_rev;
1003         uint32_t info;
1004         int error, nregwin, i;
1005
1006         /*
1007          * Get 0th regwin information
1008          * NOTE: 0th regwin should exist
1009          */
1010         error = bwi_regwin_select(sc, 0);
1011         if (error) {
1012                 device_printf(sc->sc_dev, "can't select regwin 0\n");
1013                 return error;
1014         }
1015         bwi_regwin_info(sc, &rw_type, &rw_rev);
1016
1017         /*
1018          * Find out BBP id
1019          */
1020         bbp_id = 0;
1021         info = 0;
1022         if (rw_type == BWI_REGWIN_T_COM) {
1023                 info = CSR_READ_4(sc, BWI_INFO);
1024                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
1025
1026                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
1027
1028                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
1029         } else {
1030                 uint16_t did = pci_get_device(sc->sc_dev);
1031                 uint8_t revid = pci_get_revid(sc->sc_dev);
1032
1033                 for (i = 0; i < NELEM(bwi_bbpid_map); ++i) {
1034                         if (did >= bwi_bbpid_map[i].did_min &&
1035                             did <= bwi_bbpid_map[i].did_max) {
1036                                 bbp_id = bwi_bbpid_map[i].bbp_id;
1037                                 break;
1038                         }
1039                 }
1040                 if (bbp_id == 0) {
1041                         device_printf(sc->sc_dev, "no BBP id for device id "
1042                                       "0x%04x\n", did);
1043                         return ENXIO;
1044                 }
1045
1046                 info = __SHIFTIN(revid, BWI_INFO_BBPREV_MASK) |
1047                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
1048         }
1049
1050         /*
1051          * Find out number of regwins
1052          */
1053         nregwin = 0;
1054         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
1055                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
1056         } else {
1057                 for (i = 0; i < NELEM(bwi_regwin_count); ++i) {
1058                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
1059                                 nregwin = bwi_regwin_count[i].nregwin;
1060                                 break;
1061                         }
1062                 }
1063                 if (nregwin == 0) {
1064                         device_printf(sc->sc_dev, "no number of win for "
1065                                       "BBP id 0x%04x\n", bbp_id);
1066                         return ENXIO;
1067                 }
1068         }
1069
1070         /* Record BBP id/rev for later using */
1071         sc->sc_bbp_id = bbp_id;
1072         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
1073         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
1074         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
1075                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
1076
1077         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
1078                 nregwin, sc->sc_cap);
1079
1080         /*
1081          * Create rest of the regwins
1082          */
1083
1084         /* Don't re-create common regwin, if it is already created */
1085         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
1086
1087         for (; i < nregwin; ++i) {
1088                 /*
1089                  * Get regwin information
1090                  */
1091                 error = bwi_regwin_select(sc, i);
1092                 if (error) {
1093                         device_printf(sc->sc_dev,
1094                                       "can't select regwin %d\n", i);
1095                         return error;
1096                 }
1097                 bwi_regwin_info(sc, &rw_type, &rw_rev);
1098
1099                 /*
1100                  * Try attach:
1101                  * 1) Bus (PCI/PCIE) regwin
1102                  * 2) MAC regwin
1103                  * Ignore rest types of regwin
1104                  */
1105                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
1106                     rw_type == BWI_REGWIN_T_BUSPCIE) {
1107                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1108                                 device_printf(sc->sc_dev,
1109                                               "bus regwin already exists\n");
1110                         } else {
1111                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
1112                                                   rw_type, rw_rev);
1113                         }
1114                 } else if (rw_type == BWI_REGWIN_T_MAC) {
1115                         /* XXX ignore return value */
1116                         bwi_mac_attach(sc, i, rw_rev);
1117                 }
1118         }
1119
1120         /* At least one MAC shold exist */
1121         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
1122                 device_printf(sc->sc_dev, "no MAC was found\n");
1123                 return ENXIO;
1124         }
1125         KKASSERT(sc->sc_nmac > 0);
1126
1127         /* Bus regwin must exist */
1128         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1129                 device_printf(sc->sc_dev, "no bus regwin was found\n");
1130                 return ENXIO;
1131         }
1132
1133         /* Start with first MAC */
1134         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
1135         if (error)
1136                 return error;
1137
1138         return 0;
1139 }
1140
1141 int
1142 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
1143 {
1144         struct bwi_regwin *old, *bus;
1145         uint32_t val;
1146         int error;
1147
1148         bus = &sc->sc_bus_regwin;
1149         KKASSERT(sc->sc_cur_regwin == &mac->mac_regwin);
1150
1151         /*
1152          * Tell bus to generate requested interrupts
1153          */
1154         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1155                 /*
1156                  * NOTE: Read BWI_FLAGS from MAC regwin
1157                  */
1158                 val = CSR_READ_4(sc, BWI_FLAGS);
1159
1160                 error = bwi_regwin_switch(sc, bus, &old);
1161                 if (error)
1162                         return error;
1163
1164                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
1165         } else {
1166                 uint32_t mac_mask;
1167
1168                 mac_mask = 1 << mac->mac_id;
1169
1170                 error = bwi_regwin_switch(sc, bus, &old);
1171                 if (error)
1172                         return error;
1173
1174                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
1175                 val |= mac_mask << 8;
1176                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
1177         }
1178
1179         if (sc->sc_flags & BWI_F_BUS_INITED)
1180                 goto back;
1181
1182         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1183                 /*
1184                  * Enable prefetch and burst
1185                  */
1186                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
1187                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
1188
1189                 if (bus->rw_rev < 5) {
1190                         struct bwi_regwin *com = &sc->sc_com_regwin;
1191
1192                         /*
1193                          * Configure timeouts for bus operation
1194                          */
1195
1196                         /*
1197                          * Set service timeout and request timeout
1198                          */
1199                         CSR_SETBITS_4(sc, BWI_CONF_LO,
1200                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
1201                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
1202
1203                         /*
1204                          * If there is common regwin, we switch to that regwin
1205                          * and switch back to bus regwin once we have done.
1206                          */
1207                         if (BWI_REGWIN_EXIST(com)) {
1208                                 error = bwi_regwin_switch(sc, com, NULL);
1209                                 if (error)
1210                                         return error;
1211                         }
1212
1213                         /* Let bus know what we have changed */
1214                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
1215                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
1216                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
1217                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
1218
1219                         if (BWI_REGWIN_EXIST(com)) {
1220                                 error = bwi_regwin_switch(sc, bus, NULL);
1221                                 if (error)
1222                                         return error;
1223                         }
1224                 } else if (bus->rw_rev >= 11) {
1225                         /*
1226                          * Enable memory read multiple
1227                          */
1228                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1229                 }
1230         } else {
1231                 /* TODO:PCIE */
1232         }
1233
1234         sc->sc_flags |= BWI_F_BUS_INITED;
1235 back:
1236         return bwi_regwin_switch(sc, old, NULL);
1237 }
1238
1239 static void
1240 bwi_get_card_flags(struct bwi_softc *sc)
1241 {
1242         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1243         if (sc->sc_card_flags == 0xffff)
1244                 sc->sc_card_flags = 0;
1245
1246         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1247             sc->sc_pci_subdid == 0x4e && /* XXX */
1248             sc->sc_pci_revid > 0x40)
1249                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1250
1251         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1252 }
1253
1254 static void
1255 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1256 {
1257         int i;
1258
1259         for (i = 0; i < 3; ++i) {
1260                 *((uint16_t *)eaddr + i) =
1261                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1262         }
1263 }
1264
1265 static void
1266 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1267 {
1268         struct bwi_regwin *com;
1269         uint32_t val;
1270         u_int div;
1271         int src;
1272
1273         bzero(freq, sizeof(*freq));
1274         com = &sc->sc_com_regwin;
1275
1276         KKASSERT(BWI_REGWIN_EXIST(com));
1277         KKASSERT(sc->sc_cur_regwin == com);
1278         KKASSERT(sc->sc_cap & BWI_CAP_CLKMODE);
1279
1280         /*
1281          * Calculate clock frequency
1282          */
1283         src = -1;
1284         div = 0;
1285         if (com->rw_rev < 6) {
1286                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1287                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1288                         src = BWI_CLKSRC_PCI;
1289                         div = 64;
1290                 } else {
1291                         src = BWI_CLKSRC_CS_OSC;
1292                         div = 32;
1293                 }
1294         } else if (com->rw_rev < 10) {
1295                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1296
1297                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1298                 if (src == BWI_CLKSRC_LP_OSC) {
1299                         div = 1;
1300                 } else {
1301                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1302
1303                         /* Unknown source */
1304                         if (src >= BWI_CLKSRC_MAX)
1305                                 src = BWI_CLKSRC_CS_OSC;
1306                 }
1307         } else {
1308                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1309
1310                 src = BWI_CLKSRC_CS_OSC;
1311                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1312         }
1313
1314         KKASSERT(src >= 0 && src < BWI_CLKSRC_MAX);
1315         KKASSERT(div != 0);
1316
1317         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1318                 src == BWI_CLKSRC_PCI ? "PCI" :
1319                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1320
1321         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1322         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1323
1324         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1325                 freq->clkfreq_min, freq->clkfreq_max);
1326 }
1327
1328 static int
1329 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1330 {
1331         struct bwi_regwin *old, *com;
1332         uint32_t clk_ctrl, clk_src;
1333         int error, pwr_off = 0;
1334
1335         com = &sc->sc_com_regwin;
1336         if (!BWI_REGWIN_EXIST(com))
1337                 return 0;
1338
1339         if (com->rw_rev >= 10 || com->rw_rev < 6)
1340                 return 0;
1341
1342         /*
1343          * For common regwin whose rev is [6, 10), the chip
1344          * must be capable to change clock mode.
1345          */
1346         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1347                 return 0;
1348
1349         error = bwi_regwin_switch(sc, com, &old);
1350         if (error)
1351                 return error;
1352
1353         if (clk_mode == BWI_CLOCK_MODE_FAST)
1354                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1355
1356         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1357         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1358
1359         switch (clk_mode) {
1360         case BWI_CLOCK_MODE_FAST:
1361                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1362                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1363                 break;
1364         case BWI_CLOCK_MODE_SLOW:
1365                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1366                 break;
1367         case BWI_CLOCK_MODE_DYN:
1368                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1369                               BWI_CLOCK_CTRL_IGNPLL |
1370                               BWI_CLOCK_CTRL_NODYN);
1371                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1372                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1373                         pwr_off = 1;
1374                 }
1375                 break;
1376         }
1377         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1378
1379         if (pwr_off)
1380                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1381
1382         return bwi_regwin_switch(sc, old, NULL);
1383 }
1384
1385 static int
1386 bwi_set_clock_delay(struct bwi_softc *sc)
1387 {
1388         struct bwi_regwin *old, *com;
1389         int error;
1390
1391         com = &sc->sc_com_regwin;
1392         if (!BWI_REGWIN_EXIST(com))
1393                 return 0;
1394
1395         error = bwi_regwin_switch(sc, com, &old);
1396         if (error)
1397                 return error;
1398
1399         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1400                 if (sc->sc_bbp_rev == 0)
1401                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1402                 else if (sc->sc_bbp_rev == 1)
1403                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1404         }
1405
1406         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1407                 if (com->rw_rev >= 10) {
1408                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1409                 } else {
1410                         struct bwi_clock_freq freq;
1411
1412                         bwi_get_clock_freq(sc, &freq);
1413                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1414                                 howmany(freq.clkfreq_max * 150, 1000000));
1415                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1416                                 howmany(freq.clkfreq_max * 15, 1000000));
1417                 }
1418         }
1419
1420         return bwi_regwin_switch(sc, old, NULL);
1421 }
1422
1423 static void
1424 bwi_init(void *xsc)
1425 {
1426         bwi_init_statechg(xsc, 1);
1427 }
1428
1429 static void
1430 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1431 {
1432         struct ieee80211com *ic = &sc->sc_ic;
1433         struct ifnet *ifp = &ic->ic_if;
1434         struct bwi_mac *mac;
1435         int error;
1436
1437         ASSERT_SERIALIZED(ifp->if_serializer);
1438
1439         error = bwi_stop(sc, statechg);
1440         if (error) {
1441                 if_printf(ifp, "can't stop\n");
1442                 return;
1443         }
1444
1445         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1446
1447         /* TODO: 2 MAC */
1448
1449         mac = &sc->sc_mac[0];
1450         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1451         if (error)
1452                 goto back;
1453
1454         error = bwi_mac_init(mac);
1455         if (error)
1456                 goto back;
1457
1458         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1459
1460         bcopy(IF_LLADDR(ifp), ic->ic_myaddr, sizeof(ic->ic_myaddr));
1461
1462         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1463         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, ic->ic_myaddr);
1464
1465         bwi_mac_reset_hwkeys(mac);
1466
1467         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1468                 int i;
1469
1470 #define NRETRY  1000
1471                 /*
1472                  * Drain any possible pending TX status
1473                  */
1474                 for (i = 0; i < NRETRY; ++i) {
1475                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1476                              BWI_TXSTATUS0_VALID) == 0)
1477                                 break;
1478                         CSR_READ_4(sc, BWI_TXSTATUS1);
1479                 }
1480                 if (i == NRETRY)
1481                         if_printf(ifp, "can't drain TX status\n");
1482 #undef NRETRY
1483         }
1484
1485         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1486                 bwi_mac_updateslot(mac, 1);
1487
1488         /* Start MAC */
1489         error = bwi_mac_start(mac);
1490         if (error)
1491                 goto back;
1492
1493         /* Enable intrs */
1494         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1495
1496         ifp->if_flags |= IFF_RUNNING;
1497         ifp->if_flags &= ~IFF_OACTIVE;
1498
1499         if (statechg) {
1500                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
1501                         if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
1502                                 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
1503                 } else {
1504                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1505                 }
1506         } else {
1507                 ieee80211_new_state(ic, ic->ic_state, -1);
1508         }
1509 back:
1510         if (error)
1511                 bwi_stop(sc, 1);
1512         else
1513                 ifp->if_start(ifp);
1514 }
1515
1516 static int
1517 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t req, struct ucred *cr)
1518 {
1519         struct bwi_softc *sc = ifp->if_softc;
1520         int error = 0;
1521
1522         ASSERT_SERIALIZED(ifp->if_serializer);
1523
1524         switch (cmd) {
1525         case SIOCSIFFLAGS:
1526                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1527                     (IFF_UP | IFF_RUNNING)) {
1528                         struct bwi_mac *mac;
1529                         int promisc = -1;
1530
1531                         KKASSERT(sc->sc_cur_regwin->rw_type ==
1532                                  BWI_REGWIN_T_MAC);
1533                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1534
1535                         if ((ifp->if_flags & IFF_PROMISC) &&
1536                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1537                                 promisc = 1;
1538                                 sc->sc_flags |= BWI_F_PROMISC;
1539                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1540                                    (sc->sc_flags & BWI_F_PROMISC)) {
1541                                 promisc = 0;
1542                                 sc->sc_flags &= ~BWI_F_PROMISC;
1543                         }
1544
1545                         if (promisc >= 0)
1546                                 bwi_mac_set_promisc(mac, promisc);
1547                 }
1548
1549                 if (ifp->if_flags & IFF_UP) {
1550                         if ((ifp->if_flags & IFF_RUNNING) == 0)
1551                                 bwi_init(sc);
1552                 } else {
1553                         if (ifp->if_flags & IFF_RUNNING)
1554                                 bwi_stop(sc, 1);
1555                 }
1556                 break;
1557         default:
1558                 error = ieee80211_ioctl(&sc->sc_ic, cmd, req, cr);
1559                 break;
1560         }
1561
1562         if (error == ENETRESET) {
1563                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1564                     (IFF_UP | IFF_RUNNING))
1565                         bwi_init(sc);
1566                 error = 0;
1567         }
1568         return error;
1569 }
1570
1571 static void
1572 bwi_start(struct ifnet *ifp)
1573 {
1574         struct bwi_softc *sc = ifp->if_softc;
1575         struct ieee80211com *ic = &sc->sc_ic;
1576         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1577         int trans, idx;
1578
1579         ASSERT_SERIALIZED(ifp->if_serializer);
1580
1581         if ((ifp->if_flags & IFF_OACTIVE) ||
1582             (ifp->if_flags & IFF_RUNNING) == 0)
1583                 return;
1584
1585         trans = 0;
1586         idx = tbd->tbd_idx;
1587
1588         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1589                 struct ieee80211_frame *wh;
1590                 struct ieee80211_node *ni;
1591                 struct mbuf *m;
1592                 int mgt_pkt = 0;
1593
1594                 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1595                         IF_DEQUEUE(&ic->ic_mgtq, m);
1596
1597                         ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1598                         m->m_pkthdr.rcvif = NULL;
1599
1600                         mgt_pkt = 1;
1601                 } else if (!ifq_is_empty(&ifp->if_snd)) {
1602                         struct ether_header *eh;
1603
1604                         if (ic->ic_state != IEEE80211_S_RUN) {
1605                                 ifq_purge(&ifp->if_snd);
1606                                 break;
1607                         }
1608
1609                         m = ifq_dequeue(&ifp->if_snd, NULL);
1610                         if (m == NULL)
1611                                 break;
1612
1613                         if (m->m_len < sizeof(*eh)) {
1614                                 m = m_pullup(m, sizeof(*eh));
1615                                 if (m == NULL) {
1616                                         ifp->if_oerrors++;
1617                                         continue;
1618                                 }
1619                         }
1620                         eh = mtod(m, struct ether_header *);
1621
1622                         ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1623                         if (ni == NULL) {
1624                                 m_freem(m);
1625                                 ifp->if_oerrors++;
1626                                 continue;
1627                         }
1628
1629                         /* TODO: PS */
1630
1631                         BPF_MTAP(ifp, m);
1632
1633                         m = ieee80211_encap(ic, m, ni);
1634                         if (m == NULL) {
1635                                 ieee80211_free_node(ni);
1636                                 ifp->if_oerrors++;
1637                                 continue;
1638                         }
1639                 } else {
1640                         break;
1641                 }
1642
1643                 if (ic->ic_rawbpf != NULL)
1644                         bpf_mtap(ic->ic_rawbpf, m);
1645
1646                 wh = mtod(m, struct ieee80211_frame *);
1647                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1648                         if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1649                                 ieee80211_free_node(ni);
1650                                 m_freem(m);
1651                                 ifp->if_oerrors++;
1652                                 continue;
1653                         }
1654                 }
1655                 wh = NULL;      /* Catch any invalid use */
1656
1657                 if (bwi_encap(sc, idx, m, &ni, mgt_pkt) != 0) {
1658                         /* 'm' is freed in bwi_encap() if we reach here */
1659                         if (ni != NULL)
1660                                 ieee80211_free_node(ni);
1661                         ifp->if_oerrors++;
1662                         continue;
1663                 }
1664
1665                 trans = 1;
1666                 tbd->tbd_used++;
1667                 idx = (idx + 1) % BWI_TX_NDESC;
1668
1669                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1670                         ifp->if_flags |= IFF_OACTIVE;
1671                         break;
1672                 }
1673         }
1674         tbd->tbd_idx = idx;
1675
1676         if (trans)
1677                 sc->sc_tx_timer = 5;
1678         ifp->if_timer = 1;
1679 }
1680
1681 static void
1682 bwi_watchdog(struct ifnet *ifp)
1683 {
1684         struct bwi_softc *sc = ifp->if_softc;
1685
1686         ASSERT_SERIALIZED(ifp->if_serializer);
1687
1688         ifp->if_timer = 0;
1689
1690         if ((ifp->if_flags & IFF_RUNNING) == 0)
1691                 return;
1692
1693         if (sc->sc_tx_timer) {
1694                 if (--sc->sc_tx_timer == 0) {
1695                         if_printf(ifp, "watchdog timeout\n");
1696                         ifp->if_oerrors++;
1697                         /* TODO */
1698                 } else {
1699                         ifp->if_timer = 1;
1700                 }
1701         }
1702         ieee80211_watchdog(&sc->sc_ic);
1703 }
1704
1705 static int
1706 bwi_stop(struct bwi_softc *sc, int state_chg)
1707 {
1708         struct ieee80211com *ic = &sc->sc_ic;
1709         struct ifnet *ifp = &ic->ic_if;
1710         struct bwi_mac *mac;
1711         int i, error, pwr_off = 0;
1712
1713         ASSERT_SERIALIZED(ifp->if_serializer);
1714
1715         if (state_chg)
1716                 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
1717         else
1718                 bwi_newstate_begin(sc, IEEE80211_S_INIT);
1719
1720         if (ifp->if_flags & IFF_RUNNING) {
1721                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1722                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1723
1724                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1725                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1726                 bwi_mac_stop(mac);
1727         }
1728
1729         for (i = 0; i < sc->sc_nmac; ++i) {
1730                 struct bwi_regwin *old_rw;
1731
1732                 mac = &sc->sc_mac[i];
1733                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1734                         continue;
1735
1736                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1737                 if (error)
1738                         continue;
1739
1740                 bwi_mac_shutdown(mac);
1741                 pwr_off = 1;
1742
1743                 bwi_regwin_switch(sc, old_rw, NULL);
1744         }
1745
1746         if (pwr_off)
1747                 bwi_bbp_power_off(sc);
1748
1749         sc->sc_tx_timer = 0;
1750         ifp->if_timer = 0;
1751         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1752         return 0;
1753 }
1754
1755 static void
1756 bwi_intr(void *xsc)
1757 {
1758         struct bwi_softc *sc = xsc;
1759         struct bwi_mac *mac;
1760         struct ifnet *ifp = &sc->sc_ic.ic_if;
1761         uint32_t intr_status;
1762         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1763         int i, txrx_error, tx = 0, rx_data = -1;
1764
1765         ASSERT_SERIALIZED(ifp->if_serializer);
1766
1767         if ((ifp->if_flags & IFF_RUNNING) == 0)
1768                 return;
1769
1770         /*
1771          * Get interrupt status
1772          */
1773         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1774         if (intr_status == 0xffffffff)  /* Not for us */
1775                 return;
1776
1777         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1778
1779         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1780         if (intr_status == 0)           /* Nothing is interesting */
1781                 return;
1782
1783         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1784         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1785
1786         txrx_error = 0;
1787         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1788         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1789                 uint32_t mask;
1790
1791                 if (BWI_TXRX_IS_RX(i))
1792                         mask = BWI_TXRX_RX_INTRS;
1793                 else
1794                         mask = BWI_TXRX_TX_INTRS;
1795
1796                 txrx_intr_status[i] =
1797                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1798
1799                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1800                          i, txrx_intr_status[i]);
1801
1802                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1803                         if_printf(ifp, "intr fatal TX/RX (%d) error 0x%08x\n",
1804                                   i, txrx_intr_status[i]);
1805                         txrx_error = 1;
1806                 }
1807         }
1808         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1809
1810         /*
1811          * Acknowledge interrupt
1812          */
1813         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1814
1815         for (i = 0; i < BWI_TXRX_NRING; ++i)
1816                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1817
1818         /* Disable all interrupts */
1819         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1820
1821         if (intr_status & BWI_INTR_PHY_TXERR) {
1822                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1823                         if_printf(ifp, "intr PHY TX error\n");
1824                         /* XXX to netisr0? */
1825                         bwi_init_statechg(sc, 0);
1826                         return;
1827                 }
1828         }
1829
1830         if (txrx_error) {
1831                 /* TODO: reset device */
1832         }
1833
1834         if (intr_status & BWI_INTR_TBTT)
1835                 bwi_mac_config_ps(mac);
1836
1837         if (intr_status & BWI_INTR_EO_ATIM)
1838                 if_printf(ifp, "EO_ATIM\n");
1839
1840         if (intr_status & BWI_INTR_PMQ) {
1841                 for (;;) {
1842                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1843                                 break;
1844                 }
1845                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1846         }
1847
1848         if (intr_status & BWI_INTR_NOISE)
1849                 if_printf(ifp, "intr noise\n");
1850
1851         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX)
1852                 rx_data = sc->sc_rxeof(sc);
1853
1854         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1855                 sc->sc_txeof_status(sc);
1856                 tx = 1;
1857         }
1858
1859         if (intr_status & BWI_INTR_TX_DONE) {
1860                 bwi_txeof(sc);
1861                 tx = 1;
1862         }
1863
1864         /* Re-enable interrupts */
1865         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1866
1867         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1868                 int evt = BWI_LED_EVENT_NONE;
1869
1870                 if (tx && rx_data > 0) {
1871                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1872                                 evt = BWI_LED_EVENT_RX;
1873                         else
1874                                 evt = BWI_LED_EVENT_TX;
1875                 } else if (tx) {
1876                         evt = BWI_LED_EVENT_TX;
1877                 } else if (rx_data > 0) {
1878                         evt = BWI_LED_EVENT_RX;
1879                 } else if (rx_data == 0) {
1880                         evt = BWI_LED_EVENT_POLL;
1881                 }
1882
1883                 if (evt != BWI_LED_EVENT_NONE)
1884                         bwi_led_event(sc, evt);
1885         }
1886 }
1887
1888 static void
1889 bwi_newstate_begin(struct bwi_softc *sc, enum ieee80211_state nstate)
1890 {
1891         callout_stop(&sc->sc_scan_ch);
1892         callout_stop(&sc->sc_calib_ch);
1893
1894         ieee80211_ratectl_newstate(&sc->sc_ic, nstate);
1895         bwi_led_newstate(sc, nstate);
1896
1897         if (nstate == IEEE80211_S_INIT)
1898                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1899 }
1900
1901 static int
1902 bwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1903 {
1904         struct bwi_softc *sc = ic->ic_if.if_softc;
1905         struct ifnet *ifp = &ic->ic_if;
1906         int error;
1907
1908         ASSERT_SERIALIZED(ifp->if_serializer);
1909
1910         bwi_newstate_begin(sc, nstate);
1911
1912         if (nstate == IEEE80211_S_INIT)
1913                 goto back;
1914
1915         error = bwi_set_chan(sc, ic->ic_curchan);
1916         if (error) {
1917                 if_printf(ifp, "can't set channel to %u\n",
1918                           ieee80211_chan2ieee(ic, ic->ic_curchan));
1919                 return error;
1920         }
1921
1922         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1923                 /* Nothing to do */
1924         } else if (nstate == IEEE80211_S_RUN) {
1925                 struct bwi_mac *mac;
1926
1927                 bwi_set_bssid(sc, ic->ic_bss->ni_bssid);
1928
1929                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1930                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1931
1932                 /* Initial TX power calibration */
1933                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1934 #ifdef notyet
1935                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1936 #else
1937                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1938 #endif
1939         } else {
1940                 bwi_set_bssid(sc, bwi_zero_addr);
1941         }
1942
1943 back:
1944         error = sc->sc_newstate(ic, nstate, arg);
1945
1946         if (nstate == IEEE80211_S_SCAN) {
1947                 callout_reset(&sc->sc_scan_ch,
1948                               (sc->sc_dwell_time * hz) / 1000,
1949                               bwi_next_scan, sc);
1950         } else if (nstate == IEEE80211_S_RUN) {
1951                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1952         }
1953         return error;
1954 }
1955
1956 static int
1957 bwi_media_change(struct ifnet *ifp)
1958 {
1959         int error;
1960
1961         ASSERT_SERIALIZED(ifp->if_serializer);
1962
1963         error = ieee80211_media_change(ifp);
1964         if (error != ENETRESET)
1965                 return error;
1966
1967         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
1968                 bwi_init(ifp->if_softc);
1969         return 0;
1970 }
1971
1972 static int
1973 bwi_dma_alloc(struct bwi_softc *sc)
1974 {
1975         int error, i, has_txstats;
1976         bus_addr_t lowaddr = 0;
1977         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1978         uint32_t txrx_ctrl_step = 0;
1979
1980         has_txstats = 0;
1981         for (i = 0; i < sc->sc_nmac; ++i) {
1982                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1983                         has_txstats = 1;
1984                         break;
1985                 }
1986         }
1987
1988         switch (sc->sc_bus_space) {
1989         case BWI_BUS_SPACE_30BIT:
1990         case BWI_BUS_SPACE_32BIT:
1991                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1992                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1993                 else
1994                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1995                 desc_sz = sizeof(struct bwi_desc32);
1996                 txrx_ctrl_step = 0x20;
1997
1998                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1999                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
2000                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
2001                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
2002                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
2003                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
2004                 sc->sc_rxeof = bwi_rxeof32;
2005                 sc->sc_start_tx = bwi_start_tx32;
2006                 if (has_txstats) {
2007                         sc->sc_init_txstats = bwi_init_txstats32;
2008                         sc->sc_free_txstats = bwi_free_txstats32;
2009                         sc->sc_txeof_status = bwi_txeof_status32;
2010                 }
2011                 break;
2012
2013         case BWI_BUS_SPACE_64BIT:
2014                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
2015                 desc_sz = sizeof(struct bwi_desc64);
2016                 txrx_ctrl_step = 0x40;
2017
2018                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
2019                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
2020                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
2021                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
2022                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
2023                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
2024                 sc->sc_rxeof = bwi_rxeof64;
2025                 sc->sc_start_tx = bwi_start_tx64;
2026                 if (has_txstats) {
2027                         sc->sc_init_txstats = bwi_init_txstats64;
2028                         sc->sc_free_txstats = bwi_free_txstats64;
2029                         sc->sc_txeof_status = bwi_txeof_status64;
2030                 }
2031                 break;
2032         }
2033
2034         KKASSERT(lowaddr != 0);
2035         KKASSERT(desc_sz != 0);
2036         KKASSERT(txrx_ctrl_step != 0);
2037
2038         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
2039         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
2040
2041         /*
2042          * Create top level DMA tag
2043          */
2044         error = bus_dma_tag_create(NULL, BWI_ALIGN, 0,
2045                                    lowaddr, BUS_SPACE_MAXADDR,
2046                                    NULL, NULL,
2047                                    MAXBSIZE,
2048                                    BUS_SPACE_UNRESTRICTED,
2049                                    BUS_SPACE_MAXSIZE_32BIT,
2050                                    0, &sc->sc_parent_dtag);
2051         if (error) {
2052                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
2053                 return error;
2054         }
2055
2056 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
2057
2058         /*
2059          * Create TX ring DMA stuffs
2060          */
2061         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2062                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2063                                    NULL, NULL,
2064                                    tx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2065                                    0, &sc->sc_txring_dtag);
2066         if (error) {
2067                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
2068                 return error;
2069         }
2070
2071         for (i = 0; i < BWI_TX_NRING; ++i) {
2072                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
2073                                            &sc->sc_tx_rdata[i], tx_ring_sz,
2074                                            TXRX_CTRL(i));
2075                 if (error) {
2076                         device_printf(sc->sc_dev, "%dth TX ring "
2077                                       "DMA alloc failed\n", i);
2078                         return error;
2079                 }
2080         }
2081
2082         /*
2083          * Create RX ring DMA stuffs
2084          */
2085         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2086                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2087                                    NULL, NULL,
2088                                    rx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2089                                    0, &sc->sc_rxring_dtag);
2090         if (error) {
2091                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
2092                 return error;
2093         }
2094
2095         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
2096                                    rx_ring_sz, TXRX_CTRL(0));
2097         if (error) {
2098                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
2099                 return error;
2100         }
2101
2102         if (has_txstats) {
2103                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
2104                 if (error) {
2105                         device_printf(sc->sc_dev,
2106                                       "TX stats DMA alloc failed\n");
2107                         return error;
2108                 }
2109         }
2110
2111 #undef TXRX_CTRL
2112
2113         return bwi_dma_mbuf_create(sc);
2114 }
2115
2116 static void
2117 bwi_dma_free(struct bwi_softc *sc)
2118 {
2119         if (sc->sc_txring_dtag != NULL) {
2120                 int i;
2121
2122                 for (i = 0; i < BWI_TX_NRING; ++i) {
2123                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2124
2125                         if (rd->rdata_desc != NULL) {
2126                                 bus_dmamap_unload(sc->sc_txring_dtag,
2127                                                   rd->rdata_dmap);
2128                                 bus_dmamem_free(sc->sc_txring_dtag,
2129                                                 rd->rdata_desc,
2130                                                 rd->rdata_dmap);
2131                         }
2132                 }
2133                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2134         }
2135
2136         if (sc->sc_rxring_dtag != NULL) {
2137                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2138
2139                 if (rd->rdata_desc != NULL) {
2140                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2141                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2142                                         rd->rdata_dmap);
2143                 }
2144                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2145         }
2146
2147         bwi_dma_txstats_free(sc);
2148         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2149
2150         if (sc->sc_parent_dtag != NULL)
2151                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2152 }
2153
2154 static int
2155 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2156                    struct bwi_ring_data *rd, bus_size_t size,
2157                    uint32_t txrx_ctrl)
2158 {
2159         int error;
2160
2161         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2162                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2163                                  &rd->rdata_dmap);
2164         if (error) {
2165                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2166                 return error;
2167         }
2168
2169         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2170                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2171                                 BUS_DMA_WAITOK);
2172         if (error) {
2173                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2174                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2175                 rd->rdata_desc = NULL;
2176                 return error;
2177         }
2178
2179         rd->rdata_txrx_ctrl = txrx_ctrl;
2180         return 0;
2181 }
2182
2183 static int
2184 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2185                       bus_size_t desc_sz)
2186 {
2187         struct bwi_txstats_data *st;
2188         bus_size_t dma_size;
2189         int error;
2190
2191         st = kmalloc(sizeof(*st), M_DEVBUF, M_WAITOK | M_ZERO);
2192         sc->sc_txstats = st;
2193
2194         /*
2195          * Create TX stats descriptor DMA stuffs
2196          */
2197         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2198
2199         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2200                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2201                                    NULL, NULL,
2202                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2203                                    0, &st->stats_ring_dtag);
2204         if (error) {
2205                 device_printf(sc->sc_dev, "can't create txstats ring "
2206                               "DMA tag\n");
2207                 return error;
2208         }
2209
2210         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2211                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2212                                  &st->stats_ring_dmap);
2213         if (error) {
2214                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2215                               "DMA mem\n");
2216                 bus_dma_tag_destroy(st->stats_ring_dtag);
2217                 st->stats_ring_dtag = NULL;
2218                 return error;
2219         }
2220
2221         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2222                                 st->stats_ring, dma_size,
2223                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2224                                 BUS_DMA_WAITOK);
2225         if (error) {
2226                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2227                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2228                                 st->stats_ring_dmap);
2229                 bus_dma_tag_destroy(st->stats_ring_dtag);
2230                 st->stats_ring_dtag = NULL;
2231                 return error;
2232         }
2233
2234         /*
2235          * Create TX stats DMA stuffs
2236          */
2237         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2238                            BWI_ALIGN);
2239
2240         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_ALIGN, 0,
2241                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2242                                    NULL, NULL,
2243                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2244                                    0, &st->stats_dtag);
2245         if (error) {
2246                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2247                 return error;
2248         }
2249
2250         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2251                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2252                                  &st->stats_dmap);
2253         if (error) {
2254                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2255                 bus_dma_tag_destroy(st->stats_dtag);
2256                 st->stats_dtag = NULL;
2257                 return error;
2258         }
2259
2260         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2261                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2262                                 BUS_DMA_WAITOK);
2263         if (error) {
2264                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2265                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2266                 bus_dma_tag_destroy(st->stats_dtag);
2267                 st->stats_dtag = NULL;
2268                 return error;
2269         }
2270
2271         st->stats_ctrl_base = ctrl_base;
2272         return 0;
2273 }
2274
2275 static void
2276 bwi_dma_txstats_free(struct bwi_softc *sc)
2277 {
2278         struct bwi_txstats_data *st;
2279
2280         if (sc->sc_txstats == NULL)
2281                 return;
2282         st = sc->sc_txstats;
2283
2284         if (st->stats_ring_dtag != NULL) {
2285                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2286                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2287                                 st->stats_ring_dmap);
2288                 bus_dma_tag_destroy(st->stats_ring_dtag);
2289         }
2290
2291         if (st->stats_dtag != NULL) {
2292                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2293                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2294                 bus_dma_tag_destroy(st->stats_dtag);
2295         }
2296
2297         kfree(st, M_DEVBUF);
2298 }
2299
2300 static void
2301 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2302 {
2303         KASSERT(nseg == 1, ("too many segments\n"));
2304         *((bus_addr_t *)arg) = seg->ds_addr;
2305 }
2306
2307 static int
2308 bwi_dma_mbuf_create(struct bwi_softc *sc)
2309 {
2310         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2311         int i, j, k, ntx, error;
2312
2313         /*
2314          * Create TX/RX mbuf DMA tag
2315          */
2316         error = bus_dma_tag_create(sc->sc_parent_dtag, 1, 0,
2317                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2318                                    NULL, NULL, MCLBYTES, 1,
2319                                    BUS_SPACE_MAXSIZE_32BIT,
2320                                    0, &sc->sc_buf_dtag);
2321         if (error) {
2322                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2323                 return error;
2324         }
2325
2326         ntx = 0;
2327
2328         /*
2329          * Create TX mbuf DMA map
2330          */
2331         for (i = 0; i < BWI_TX_NRING; ++i) {
2332                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2333
2334                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2335                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2336                                                   &tbd->tbd_buf[j].tb_dmap);
2337                         if (error) {
2338                                 device_printf(sc->sc_dev, "can't create "
2339                                               "%dth tbd, %dth DMA map\n", i, j);
2340
2341                                 ntx = i;
2342                                 for (k = 0; k < j; ++k) {
2343                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2344                                                 tbd->tbd_buf[k].tb_dmap);
2345                                 }
2346                                 goto fail;
2347                         }
2348                 }
2349         }
2350         ntx = BWI_TX_NRING;
2351
2352         /*
2353          * Create RX mbuf DMA map and a spare DMA map
2354          */
2355         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2356                                   &rbd->rbd_tmp_dmap);
2357         if (error) {
2358                 device_printf(sc->sc_dev,
2359                               "can't create spare RX buf DMA map\n");
2360                 goto fail;
2361         }
2362
2363         for (j = 0; j < BWI_RX_NDESC; ++j) {
2364                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2365                                           &rbd->rbd_buf[j].rb_dmap);
2366                 if (error) {
2367                         device_printf(sc->sc_dev, "can't create %dth "
2368                                       "RX buf DMA map\n", j);
2369
2370                         for (k = 0; k < j; ++k) {
2371                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2372                                         rbd->rbd_buf[j].rb_dmap);
2373                         }
2374                         bus_dmamap_destroy(sc->sc_buf_dtag,
2375                                            rbd->rbd_tmp_dmap);
2376                         goto fail;
2377                 }
2378         }
2379
2380         return 0;
2381 fail:
2382         bwi_dma_mbuf_destroy(sc, ntx, 0);
2383         return error;
2384 }
2385
2386 static void
2387 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2388 {
2389         int i, j;
2390
2391         if (sc->sc_buf_dtag == NULL)
2392                 return;
2393
2394         for (i = 0; i < ntx; ++i) {
2395                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2396
2397                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2398                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2399
2400                         if (tb->tb_mbuf != NULL) {
2401                                 bus_dmamap_unload(sc->sc_buf_dtag,
2402                                                   tb->tb_dmap);
2403                                 m_freem(tb->tb_mbuf);
2404                         }
2405                         if (tb->tb_ni != NULL)
2406                                 ieee80211_free_node(tb->tb_ni);
2407                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2408                 }
2409         }
2410
2411         if (nrx) {
2412                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2413
2414                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2415                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2416                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2417
2418                         if (rb->rb_mbuf != NULL) {
2419                                 bus_dmamap_unload(sc->sc_buf_dtag,
2420                                                   rb->rb_dmap);
2421                                 m_freem(rb->rb_mbuf);
2422                         }
2423                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2424                 }
2425         }
2426
2427         bus_dma_tag_destroy(sc->sc_buf_dtag);
2428         sc->sc_buf_dtag = NULL;
2429 }
2430
2431 static void
2432 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2433 {
2434         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2435 }
2436
2437 static void
2438 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2439 {
2440         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2441 }
2442
2443 static int
2444 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2445 {
2446         struct bwi_ring_data *rd;
2447         struct bwi_txbuf_data *tbd;
2448         uint32_t val, addr_hi, addr_lo;
2449
2450         KKASSERT(ring_idx < BWI_TX_NRING);
2451         rd = &sc->sc_tx_rdata[ring_idx];
2452         tbd = &sc->sc_tx_bdata[ring_idx];
2453
2454         tbd->tbd_idx = 0;
2455         tbd->tbd_used = 0;
2456
2457         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2458         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2459                         BUS_DMASYNC_PREWRITE);
2460
2461         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2462         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2463
2464         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2465               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2466                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2467         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2468
2469         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2470               BWI_TXRX32_CTRL_ENABLE;
2471         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2472
2473         return 0;
2474 }
2475
2476 static void
2477 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2478                        bus_addr_t paddr, int hdr_size, int ndesc)
2479 {
2480         uint32_t val, addr_hi, addr_lo;
2481
2482         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2483         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2484
2485         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2486               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2487                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2488         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2489
2490         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2491               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2492               BWI_TXRX32_CTRL_ENABLE;
2493         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2494
2495         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2496                     (ndesc - 1) * sizeof(struct bwi_desc32));
2497 }
2498
2499 static int
2500 bwi_init_rx_ring32(struct bwi_softc *sc)
2501 {
2502         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2503         int i, error;
2504
2505         sc->sc_rx_bdata.rbd_idx = 0;
2506
2507         for (i = 0; i < BWI_RX_NDESC; ++i) {
2508                 error = bwi_newbuf(sc, i, 1);
2509                 if (error) {
2510                         if_printf(&sc->sc_ic.ic_if,
2511                                   "can't allocate %dth RX buffer\n", i);
2512                         return error;
2513                 }
2514         }
2515         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2516                         BUS_DMASYNC_PREWRITE);
2517
2518         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2519                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2520         return 0;
2521 }
2522
2523 static int
2524 bwi_init_txstats32(struct bwi_softc *sc)
2525 {
2526         struct bwi_txstats_data *st = sc->sc_txstats;
2527         bus_addr_t stats_paddr;
2528         int i;
2529
2530         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2531         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2532
2533         st->stats_idx = 0;
2534
2535         stats_paddr = st->stats_paddr;
2536         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2537                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2538                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2539                 stats_paddr += sizeof(struct bwi_txstats);
2540         }
2541         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2542                         BUS_DMASYNC_PREWRITE);
2543
2544         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2545                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2546         return 0;
2547 }
2548
2549 static void
2550 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2551                     int buf_len)
2552 {
2553         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2554
2555         KKASSERT(buf_idx < BWI_RX_NDESC);
2556         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2557                          paddr, buf_len, 0);
2558 }
2559
2560 static void
2561 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2562                     int buf_idx, bus_addr_t paddr, int buf_len)
2563 {
2564         KKASSERT(buf_idx < BWI_TX_NDESC);
2565         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2566                          paddr, buf_len, 1);
2567 }
2568
2569 static int
2570 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2571 {
2572         /* TODO:64 */
2573         return EOPNOTSUPP;
2574 }
2575
2576 static int
2577 bwi_init_rx_ring64(struct bwi_softc *sc)
2578 {
2579         /* TODO:64 */
2580         return EOPNOTSUPP;
2581 }
2582
2583 static int
2584 bwi_init_txstats64(struct bwi_softc *sc)
2585 {
2586         /* TODO:64 */
2587         return EOPNOTSUPP;
2588 }
2589
2590 static void
2591 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2592                     int buf_len)
2593 {
2594         /* TODO:64 */
2595 }
2596
2597 static void
2598 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2599                     int buf_idx, bus_addr_t paddr, int buf_len)
2600 {
2601         /* TODO:64 */
2602 }
2603
2604 static void
2605 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2606                  bus_size_t mapsz __unused, int error)
2607 {
2608         if (!error) {
2609                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2610                 *((bus_addr_t *)arg) = seg->ds_addr;
2611         }
2612 }
2613
2614 static int
2615 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2616 {
2617         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2618         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2619         struct bwi_rxbuf_hdr *hdr;
2620         bus_dmamap_t map;
2621         bus_addr_t paddr;
2622         struct mbuf *m;
2623         int error;
2624
2625         KKASSERT(buf_idx < BWI_RX_NDESC);
2626
2627         m = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2628         if (m == NULL) {
2629                 error = ENOBUFS;
2630
2631                 /*
2632                  * If the NIC is up and running, we need to:
2633                  * - Clear RX buffer's header.
2634                  * - Restore RX descriptor settings.
2635                  */
2636                 if (init)
2637                         return error;
2638                 else
2639                         goto back;
2640         }
2641         m->m_len = m->m_pkthdr.len = MCLBYTES;
2642
2643         /*
2644          * Try to load RX buf into temporary DMA map
2645          */
2646         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2647                                      bwi_dma_buf_addr, &paddr,
2648                                      init ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2649         if (error) {
2650                 m_freem(m);
2651
2652                 /*
2653                  * See the comment above
2654                  */
2655                 if (init)
2656                         return error;
2657                 else
2658                         goto back;
2659         }
2660
2661         if (!init)
2662                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2663         rxbuf->rb_mbuf = m;
2664         rxbuf->rb_paddr = paddr;
2665
2666         /*
2667          * Swap RX buf's DMA map with the loaded temporary one
2668          */
2669         map = rxbuf->rb_dmap;
2670         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2671         rbd->rbd_tmp_dmap = map;
2672
2673 back:
2674         /*
2675          * Clear RX buf header
2676          */
2677         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2678         bzero(hdr, sizeof(*hdr));
2679         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2680
2681         /*
2682          * Setup RX buf descriptor
2683          */
2684         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2685                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2686         return error;
2687 }
2688
2689 static void
2690 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2691                     const uint8_t *addr)
2692 {
2693         int i;
2694
2695         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2696                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2697
2698         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2699                 uint16_t addr_val;
2700
2701                 addr_val = (uint16_t)addr[i * 2] |
2702                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2703                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2704         }
2705 }
2706
2707 static int
2708 bwi_set_chan(struct bwi_softc *sc, struct ieee80211_channel *c)
2709 {
2710         struct ieee80211com *ic = &sc->sc_ic;
2711 #ifdef INVARIANTS
2712         struct ifnet *ifp = &ic->ic_if;
2713 #endif
2714         struct bwi_mac *mac;
2715         uint16_t flags;
2716         u_int chan;
2717
2718         ASSERT_SERIALIZED(ifp->if_serializer);
2719
2720         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
2721         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2722
2723         chan = ieee80211_chan2ieee(ic, c);
2724
2725         bwi_rf_set_chan(mac, chan, 0);
2726
2727         /*
2728          * Setup radio tap channel freq and flags
2729          */
2730         if (IEEE80211_IS_CHAN_G(c))
2731                 flags = IEEE80211_CHAN_G;
2732         else
2733                 flags = IEEE80211_CHAN_B;
2734
2735         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
2736                 htole16(c->ic_freq);
2737         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
2738                 htole16(flags);
2739
2740         return 0;
2741 }
2742
2743 static void
2744 bwi_next_scan(void *xsc)
2745 {
2746         struct bwi_softc *sc = xsc;
2747         struct ieee80211com *ic = &sc->sc_ic;
2748         struct ifnet *ifp = &ic->ic_if;
2749
2750         lwkt_serialize_enter(ifp->if_serializer);
2751
2752         if (ic->ic_state == IEEE80211_S_SCAN)
2753                 ieee80211_next_scan(ic);
2754
2755         lwkt_serialize_exit(ifp->if_serializer);
2756 }
2757
2758 static int
2759 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2760 {
2761         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2762         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2763         struct ieee80211com *ic = &sc->sc_ic;
2764         struct ifnet *ifp = &ic->ic_if;
2765         int idx, rx_data = 0;
2766
2767         idx = rbd->rbd_idx;
2768         while (idx != end_idx) {
2769                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2770                 struct bwi_rxbuf_hdr *hdr;
2771                 struct ieee80211_frame_min *wh;
2772                 struct ieee80211_node *ni;
2773                 struct mbuf *m;
2774                 const void *plcp;
2775                 uint16_t flags2;
2776                 int buflen, wh_ofs, hdr_extra, rssi, type, rate;
2777
2778                 m = rb->rb_mbuf;
2779                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2780                                 BUS_DMASYNC_POSTREAD);
2781
2782                 if (bwi_newbuf(sc, idx, 0)) {
2783                         ifp->if_ierrors++;
2784                         goto next;
2785                 }
2786
2787                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2788                 flags2 = le16toh(hdr->rxh_flags2);
2789
2790                 hdr_extra = 0;
2791                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2792                         hdr_extra = 2;
2793                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2794
2795                 buflen = le16toh(hdr->rxh_buflen);
2796                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2797                         if_printf(ifp, "short frame %d, hdr_extra %d\n",
2798                                   buflen, hdr_extra);
2799                         ifp->if_ierrors++;
2800                         m_freem(m);
2801                         goto next;
2802                 }
2803
2804                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2805                 rssi = bwi_calc_rssi(sc, hdr);
2806
2807                 m->m_pkthdr.rcvif = ifp;
2808                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2809                 m_adj(m, sizeof(*hdr) + wh_ofs);
2810
2811                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2812                         rate = bwi_ofdm_plcp2rate(plcp);
2813                 else
2814                         rate = bwi_ds_plcp2rate(plcp);
2815
2816                 /* RX radio tap */
2817                 if (sc->sc_drvbpf != NULL)
2818                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi);
2819
2820                 m_adj(m, -IEEE80211_CRC_LEN);
2821
2822                 wh = mtod(m, struct ieee80211_frame_min *);
2823                 ni = ieee80211_find_rxnode(ic, wh);
2824
2825                 type = ieee80211_input(ic, m, ni, rssi - BWI_NOISE_FLOOR,
2826                                        le16toh(hdr->rxh_tsf));
2827                 ieee80211_free_node(ni);
2828
2829                 if (type == IEEE80211_FC0_TYPE_DATA) {
2830                         rx_data = 1;
2831                         sc->sc_rx_rate = rate;
2832                 }
2833 next:
2834                 idx = (idx + 1) % BWI_RX_NDESC;
2835         }
2836
2837         rbd->rbd_idx = idx;
2838         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2839                         BUS_DMASYNC_PREWRITE);
2840         return rx_data;
2841 }
2842
2843 static int
2844 bwi_rxeof32(struct bwi_softc *sc)
2845 {
2846         uint32_t val, rx_ctrl;
2847         int end_idx, rx_data;
2848
2849         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2850
2851         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2852         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2853                   sizeof(struct bwi_desc32);
2854
2855         rx_data = bwi_rxeof(sc, end_idx);
2856
2857         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2858                     end_idx * sizeof(struct bwi_desc32));
2859
2860         return rx_data;
2861 }
2862
2863 static int
2864 bwi_rxeof64(struct bwi_softc *sc)
2865 {
2866         /* TODO:64 */
2867         return 0;
2868 }
2869
2870 static void
2871 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2872 {
2873         int i;
2874
2875         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2876
2877 #define NRETRY 10
2878
2879         for (i = 0; i < NRETRY; ++i) {
2880                 uint32_t status;
2881
2882                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2883                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2884                     BWI_RX32_STATUS_STATE_DISABLED)
2885                         break;
2886
2887                 DELAY(1000);
2888         }
2889         if (i == NRETRY)
2890                 if_printf(&sc->sc_ic.ic_if, "reset rx ring timedout\n");
2891
2892 #undef NRETRY
2893
2894         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2895 }
2896
2897 static void
2898 bwi_free_txstats32(struct bwi_softc *sc)
2899 {
2900         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2901 }
2902
2903 static void
2904 bwi_free_rx_ring32(struct bwi_softc *sc)
2905 {
2906         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2907         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2908         int i;
2909
2910         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2911
2912         for (i = 0; i < BWI_RX_NDESC; ++i) {
2913                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2914
2915                 if (rb->rb_mbuf != NULL) {
2916                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2917                         m_freem(rb->rb_mbuf);
2918                         rb->rb_mbuf = NULL;
2919                 }
2920         }
2921 }
2922
2923 static void
2924 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2925 {
2926         struct bwi_ring_data *rd;
2927         struct bwi_txbuf_data *tbd;
2928         struct ifnet *ifp = &sc->sc_ic.ic_if;
2929         uint32_t state, val;
2930         int i;
2931
2932         KKASSERT(ring_idx < BWI_TX_NRING);
2933         rd = &sc->sc_tx_rdata[ring_idx];
2934         tbd = &sc->sc_tx_bdata[ring_idx];
2935
2936 #define NRETRY 10
2937
2938         for (i = 0; i < NRETRY; ++i) {
2939                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2940                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2941                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2942                     state == BWI_TX32_STATUS_STATE_IDLE ||
2943                     state == BWI_TX32_STATUS_STATE_STOPPED)
2944                         break;
2945
2946                 DELAY(1000);
2947         }
2948         if (i == NRETRY) {
2949                 if_printf(ifp, "wait for TX ring(%d) stable timed out\n",
2950                           ring_idx);
2951         }
2952
2953         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2954         for (i = 0; i < NRETRY; ++i) {
2955                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2956                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2957                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2958                         break;
2959
2960                 DELAY(1000);
2961         }
2962         if (i == NRETRY)
2963                 if_printf(ifp, "reset TX ring (%d) timed out\n", ring_idx);
2964
2965 #undef NRETRY
2966
2967         DELAY(1000);
2968
2969         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2970
2971         for (i = 0; i < BWI_TX_NDESC; ++i) {
2972                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2973
2974                 if (tb->tb_mbuf != NULL) {
2975                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2976                         m_freem(tb->tb_mbuf);
2977                         tb->tb_mbuf = NULL;
2978                 }
2979                 if (tb->tb_ni != NULL) {
2980                         ieee80211_free_node(tb->tb_ni);
2981                         tb->tb_ni = NULL;
2982                 }
2983         }
2984 }
2985
2986 static void
2987 bwi_free_txstats64(struct bwi_softc *sc)
2988 {
2989         /* TODO:64 */
2990 }
2991
2992 static void
2993 bwi_free_rx_ring64(struct bwi_softc *sc)
2994 {
2995         /* TODO:64 */
2996 }
2997
2998 static void
2999 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
3000 {
3001         /* TODO:64 */
3002 }
3003
3004 static int
3005 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
3006           struct ieee80211_node **ni0, int mgt_pkt)
3007 {
3008         struct ieee80211com *ic = &sc->sc_ic;
3009         struct ieee80211_node *ni = *ni0;
3010         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3011         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3012         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3013         struct bwi_mac *mac;
3014         struct bwi_txbuf_hdr *hdr;
3015         struct ieee80211_frame *wh;
3016         uint8_t rate, rate_fb;
3017         uint32_t mac_ctrl;
3018         uint16_t phy_ctrl;
3019         bus_addr_t paddr;
3020         int pkt_len, error, mcast_pkt = 0;
3021 #if 0
3022         const uint8_t *p;
3023         int i;
3024 #endif
3025
3026         KKASSERT(ni != NULL);
3027         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3028         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3029
3030         wh = mtod(m, struct ieee80211_frame *);
3031
3032         /* Get 802.11 frame len before prepending TX header */
3033         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3034
3035         /*
3036          * Find TX rate
3037          */
3038         bzero(tb->tb_rateidx, sizeof(tb->tb_rateidx));
3039         if (!mgt_pkt) {
3040                 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
3041                         int idx;
3042
3043                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3044                                         ic->ic_fixed_rate);
3045
3046                         if (ic->ic_fixed_rate >= 1)
3047                                 idx = ic->ic_fixed_rate - 1;
3048                         else
3049                                 idx = 0;
3050                         rate_fb = IEEE80211_RS_RATE(&ni->ni_rates, idx);
3051                 } else {
3052                         tb->tb_rateidx_cnt = ieee80211_ratectl_findrate(ni,
3053                                 m->m_pkthdr.len, tb->tb_rateidx, BWI_NTXRATE);
3054
3055                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3056                                                  tb->tb_rateidx[0]);
3057                         if (tb->tb_rateidx_cnt == BWI_NTXRATE) {
3058                                 rate_fb = IEEE80211_RS_RATE(&ni->ni_rates,
3059                                                             tb->tb_rateidx[1]);
3060                         } else {
3061                                 rate_fb = rate;
3062                         }
3063                         tb->tb_buflen = m->m_pkthdr.len;
3064                 }
3065         } else {
3066                 /* Fixed at 1Mbits/s for mgt frames */
3067                 rate = rate_fb = (1 * 2);
3068         }
3069
3070         if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
3071                 rate = rate_fb = ic->ic_mcast_rate;
3072                 mcast_pkt = 1;
3073         }
3074
3075         if (rate == 0 || rate_fb == 0) {
3076                 /* XXX this should not happen */
3077                 if_printf(&ic->ic_if, "invalid rate %u or fallback rate %u",
3078                           rate, rate_fb);
3079                 rate = rate_fb = (1 * 2); /* Force 1Mbits/s */
3080         }
3081         sc->sc_tx_rate = rate;
3082
3083         /*
3084          * TX radio tap
3085          */
3086         if (sc->sc_drvbpf != NULL) {
3087                 sc->sc_tx_th.wt_flags = 0;
3088                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3089                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3090                 if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_DS &&
3091                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3092                     rate != (1 * 2)) {
3093                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3094                 }
3095                 sc->sc_tx_th.wt_rate = rate;
3096
3097                 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_tx_th, sc->sc_tx_th_len);
3098         }
3099
3100         /*
3101          * Setup the embedded TX header
3102          */
3103         M_PREPEND(m, sizeof(*hdr), MB_DONTWAIT);
3104         if (m == NULL) {
3105                 if_printf(&ic->ic_if, "prepend TX header failed\n");
3106                 return ENOBUFS;
3107         }
3108         hdr = mtod(m, struct bwi_txbuf_hdr *);
3109
3110         bzero(hdr, sizeof(*hdr));
3111
3112         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3113         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3114
3115         if (!mcast_pkt) {
3116                 uint16_t dur;
3117                 uint8_t ack_rate;
3118
3119                 ack_rate = ieee80211_ack_rate(ni, rate_fb);
3120                 dur = ieee80211_txtime(ni,
3121                 sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN,
3122                 ack_rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
3123
3124                 hdr->txh_fb_duration = htole16(dur);
3125         }
3126
3127         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3128                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3129
3130         bwi_plcp_header(hdr->txh_plcp, pkt_len, rate);
3131         bwi_plcp_header(hdr->txh_fb_plcp, pkt_len, rate_fb);
3132
3133         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3134                              BWI_TXH_PHY_C_ANTMODE_MASK);
3135         if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_OFDM)
3136                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3137         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3138                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3139
3140         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3141         if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
3142                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3143         if (ieee80211_rate2modtype(rate_fb) == IEEE80211_MODTYPE_OFDM)
3144                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3145
3146         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3147         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3148
3149         /* Catch any further usage */
3150         hdr = NULL;
3151         wh = NULL;
3152
3153         /* DMA load */
3154         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3155                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3156         if (error && error != EFBIG) {
3157                 if_printf(&ic->ic_if, "can't load TX buffer (1) %d\n", error);
3158                 goto back;
3159         }
3160
3161         if (error) {    /* error == EFBIG */
3162                 struct mbuf *m_new;
3163
3164                 m_new = m_defrag(m, MB_DONTWAIT);
3165                 if (m_new == NULL) {
3166                         if_printf(&ic->ic_if, "can't defrag TX buffer\n");
3167                         error = ENOBUFS;
3168                         goto back;
3169                 } else {
3170                         m = m_new;
3171                 }
3172
3173                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3174                                              bwi_dma_buf_addr, &paddr,
3175                                              BUS_DMA_NOWAIT);
3176                 if (error) {
3177                         if_printf(&ic->ic_if, "can't load TX buffer (2) %d\n",
3178                                   error);
3179                         goto back;
3180                 }
3181         }
3182         error = 0;
3183
3184         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3185
3186         if (mgt_pkt || mcast_pkt) {
3187                 /* Don't involve mcast/mgt packets into TX rate control */
3188                 ieee80211_free_node(ni);
3189                 *ni0 = ni = NULL;
3190         }
3191         tb->tb_mbuf = m;
3192         tb->tb_ni = ni;
3193
3194 #if 0
3195         p = mtod(m, const uint8_t *);
3196         for (i = 0; i < m->m_pkthdr.len; ++i) {
3197                 if (i != 0 && i % 8 == 0)
3198                         kprintf("\n");
3199                 kprintf("%02x ", p[i]);
3200         }
3201         kprintf("\n");
3202 #endif
3203
3204         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3205                 idx, pkt_len, m->m_pkthdr.len);
3206
3207         /* Setup TX descriptor */
3208         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3209         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3210                         BUS_DMASYNC_PREWRITE);
3211
3212         /* Kick start */
3213         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3214
3215 back:
3216         if (error)
3217                 m_freem(m);
3218         return error;
3219 }
3220
3221 static void
3222 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3223 {
3224         idx = (idx + 1) % BWI_TX_NDESC;
3225         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3226                     idx * sizeof(struct bwi_desc32));
3227 }
3228
3229 static void
3230 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3231 {
3232         /* TODO:64 */
3233 }
3234
3235 static void
3236 bwi_txeof_status32(struct bwi_softc *sc)
3237 {
3238         struct ifnet *ifp = &sc->sc_ic.ic_if;
3239         uint32_t val, ctrl_base;
3240         int end_idx;
3241
3242         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3243
3244         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3245         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3246                   sizeof(struct bwi_desc32);
3247
3248         bwi_txeof_status(sc, end_idx);
3249
3250         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3251                     end_idx * sizeof(struct bwi_desc32));
3252
3253         if ((ifp->if_flags & IFF_OACTIVE) == 0)
3254                 ifp->if_start(ifp);
3255 }
3256
3257 static void
3258 bwi_txeof_status64(struct bwi_softc *sc)
3259 {
3260         /* TODO:64 */
3261 }
3262
3263 static void
3264 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3265 {
3266         struct ifnet *ifp = &sc->sc_ic.ic_if;
3267         struct bwi_txbuf_data *tbd;
3268         struct bwi_txbuf *tb;
3269         int ring_idx, buf_idx;
3270
3271         if (tx_id == 0) {
3272                 if_printf(ifp, "zero tx id\n");
3273                 return;
3274         }
3275
3276         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3277         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3278
3279         KKASSERT(ring_idx == BWI_TX_DATA_RING);
3280         KKASSERT(buf_idx < BWI_TX_NDESC);
3281
3282         tbd = &sc->sc_tx_bdata[ring_idx];
3283         KKASSERT(tbd->tbd_used > 0);
3284         tbd->tbd_used--;
3285
3286         tb = &tbd->tbd_buf[buf_idx];
3287
3288         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3289                 "acked %d, data_txcnt %d, ni %p\n",
3290                 buf_idx, acked, data_txcnt, tb->tb_ni);
3291
3292         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3293         m_freem(tb->tb_mbuf);
3294         tb->tb_mbuf = NULL;
3295
3296         if (tb->tb_ni != NULL) {
3297                 struct ieee80211_ratectl_res res[BWI_NTXRATE];
3298                 int res_len, retry;
3299
3300                 if (data_txcnt <= BWI_SHRETRY_FB || tb->tb_rateidx_cnt == 1) {
3301                         res_len = 1;
3302                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3303                         res[0].rc_res_tries = data_txcnt;
3304                 } else {
3305                         res_len = BWI_NTXRATE;
3306                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3307                         res[0].rc_res_tries = BWI_SHRETRY_FB;
3308                         res[1].rc_res_rateidx = tb->tb_rateidx[1];
3309                         res[1].rc_res_tries = data_txcnt - BWI_SHRETRY_FB;
3310                 }
3311
3312                 if (acked) {
3313                         ifp->if_opackets++;
3314                         retry = data_txcnt > 0 ? data_txcnt - 1 : 0;
3315                 } else {
3316                         ifp->if_oerrors++;
3317                         retry = data_txcnt;
3318                 }
3319
3320                 ieee80211_ratectl_tx_complete(tb->tb_ni, tb->tb_buflen,
3321                         res, res_len, retry, 0, !acked);
3322
3323                 ieee80211_free_node(tb->tb_ni);
3324                 tb->tb_ni = NULL;
3325         } else {
3326                 /* XXX mgt packet error */
3327                 ifp->if_opackets++;
3328         }
3329
3330         if (tbd->tbd_used == 0)
3331                 sc->sc_tx_timer = 0;
3332
3333         ifp->if_flags &= ~IFF_OACTIVE;
3334 }
3335
3336 static void
3337 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3338 {
3339         struct bwi_txstats_data *st = sc->sc_txstats;
3340         int idx;
3341
3342         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3343
3344         idx = st->stats_idx;
3345         while (idx != end_idx) {
3346                 const struct bwi_txstats *stats = &st->stats[idx];
3347
3348                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3349                         int data_txcnt;
3350
3351                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3352                                                 BWI_TXS_TXCNT_DATA);
3353                         _bwi_txeof(sc, le16toh(stats->txs_id),
3354                                    stats->txs_flags & BWI_TXS_F_ACKED,
3355                                    data_txcnt);
3356                 }
3357                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3358         }
3359         st->stats_idx = idx;
3360 }
3361
3362 static void
3363 bwi_txeof(struct bwi_softc *sc)
3364 {
3365         struct ifnet *ifp = &sc->sc_ic.ic_if;
3366
3367         for (;;) {
3368                 uint32_t tx_status0, tx_status1;
3369                 uint16_t tx_id;
3370                 int data_txcnt;
3371
3372                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3373                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3374                         break;
3375                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3376
3377                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3378                 data_txcnt = __SHIFTOUT(tx_status0,
3379                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3380
3381                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3382                         continue;
3383
3384                 _bwi_txeof(sc, tx_id, tx_status0 & BWI_TXSTATUS0_ACKED,
3385                            data_txcnt);
3386         }
3387
3388         if ((ifp->if_flags & IFF_OACTIVE) == 0)
3389                 ifp->if_start(ifp);
3390 }
3391
3392 static int
3393 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3394 {
3395         bwi_power_on(sc, 1);
3396         return bwi_set_clock_mode(sc, clk_mode);
3397 }
3398
3399 static void
3400 bwi_bbp_power_off(struct bwi_softc *sc)
3401 {
3402         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3403         bwi_power_off(sc, 1);
3404 }
3405
3406 static int
3407 bwi_get_pwron_delay(struct bwi_softc *sc)
3408 {
3409         struct bwi_regwin *com, *old;
3410         struct bwi_clock_freq freq;
3411         uint32_t val;
3412         int error;
3413
3414         com = &sc->sc_com_regwin;
3415         KKASSERT(BWI_REGWIN_EXIST(com));
3416
3417         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3418                 return 0;
3419
3420         error = bwi_regwin_switch(sc, com, &old);
3421         if (error)
3422                 return error;
3423
3424         bwi_get_clock_freq(sc, &freq);
3425
3426         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3427         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3428         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3429
3430         return bwi_regwin_switch(sc, old, NULL);
3431 }
3432
3433 static int
3434 bwi_bus_attach(struct bwi_softc *sc)
3435 {
3436         struct bwi_regwin *bus, *old;
3437         int error;
3438
3439         bus = &sc->sc_bus_regwin;
3440
3441         error = bwi_regwin_switch(sc, bus, &old);
3442         if (error)
3443                 return error;
3444
3445         if (!bwi_regwin_is_enabled(sc, bus))
3446                 bwi_regwin_enable(sc, bus, 0);
3447
3448         /* Disable interripts */
3449         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3450
3451         return bwi_regwin_switch(sc, old, NULL);
3452 }
3453
3454 static const char *
3455 bwi_regwin_name(const struct bwi_regwin *rw)
3456 {
3457         switch (rw->rw_type) {
3458         case BWI_REGWIN_T_COM:
3459                 return "COM";
3460         case BWI_REGWIN_T_BUSPCI:
3461                 return "PCI";
3462         case BWI_REGWIN_T_MAC:
3463                 return "MAC";
3464         case BWI_REGWIN_T_BUSPCIE:
3465                 return "PCIE";
3466         }
3467         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3468         return NULL;
3469 }
3470
3471 static uint32_t
3472 bwi_regwin_disable_bits(struct bwi_softc *sc)
3473 {
3474         uint32_t busrev;
3475
3476         /* XXX cache this */
3477         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3478         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3479                 "bus rev %u\n", busrev);
3480
3481         if (busrev == BWI_BUSREV_0)
3482                 return BWI_STATE_LO_DISABLE1;
3483         else if (busrev == BWI_BUSREV_1)
3484                 return BWI_STATE_LO_DISABLE2;
3485         else
3486                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3487 }
3488
3489 int
3490 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3491 {
3492         uint32_t val, disable_bits;
3493
3494         disable_bits = bwi_regwin_disable_bits(sc);
3495         val = CSR_READ_4(sc, BWI_STATE_LO);
3496
3497         if ((val & (BWI_STATE_LO_CLOCK |
3498                     BWI_STATE_LO_RESET |
3499                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3500                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3501                         bwi_regwin_name(rw));
3502                 return 1;
3503         } else {
3504                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3505                         bwi_regwin_name(rw));
3506                 return 0;
3507         }
3508 }
3509
3510 void
3511 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3512 {
3513         uint32_t state_lo, disable_bits;
3514         int i;
3515
3516         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3517
3518         /*
3519          * If current regwin is in 'reset' state, it was already disabled.
3520          */
3521         if (state_lo & BWI_STATE_LO_RESET) {
3522                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3523                         "%s was already disabled\n", bwi_regwin_name(rw));
3524                 return;
3525         }
3526
3527         disable_bits = bwi_regwin_disable_bits(sc);
3528
3529         /*
3530          * Disable normal clock
3531          */
3532         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3533         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3534
3535         /*
3536          * Wait until normal clock is disabled
3537          */
3538 #define NRETRY  1000
3539         for (i = 0; i < NRETRY; ++i) {
3540                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3541                 if (state_lo & disable_bits)
3542                         break;
3543                 DELAY(10);
3544         }
3545         if (i == NRETRY) {
3546                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3547                               bwi_regwin_name(rw));
3548         }
3549
3550         for (i = 0; i < NRETRY; ++i) {
3551                 uint32_t state_hi;
3552
3553                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3554                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3555                         break;
3556                 DELAY(10);
3557         }
3558         if (i == NRETRY) {
3559                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3560                               bwi_regwin_name(rw));
3561         }
3562 #undef NRETRY
3563
3564         /*
3565          * Reset and disable regwin with gated clock
3566          */
3567         state_lo = BWI_STATE_LO_RESET | disable_bits |
3568                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3569                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3570         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3571
3572         /* Flush pending bus write */
3573         CSR_READ_4(sc, BWI_STATE_LO);
3574         DELAY(1);
3575
3576         /* Reset and disable regwin */
3577         state_lo = BWI_STATE_LO_RESET | disable_bits |
3578                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3579         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3580
3581         /* Flush pending bus write */
3582         CSR_READ_4(sc, BWI_STATE_LO);
3583         DELAY(1);
3584 }
3585
3586 void
3587 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3588 {
3589         uint32_t state_lo, state_hi, imstate;
3590
3591         bwi_regwin_disable(sc, rw, flags);
3592
3593         /* Reset regwin with gated clock */
3594         state_lo = BWI_STATE_LO_RESET |
3595                    BWI_STATE_LO_CLOCK |
3596                    BWI_STATE_LO_GATED_CLOCK |
3597                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3598         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3599
3600         /* Flush pending bus write */
3601         CSR_READ_4(sc, BWI_STATE_LO);
3602         DELAY(1);
3603
3604         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3605         if (state_hi & BWI_STATE_HI_SERROR)
3606                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3607
3608         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3609         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3610                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3611                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3612         }
3613
3614         /* Enable regwin with gated clock */
3615         state_lo = BWI_STATE_LO_CLOCK |
3616                    BWI_STATE_LO_GATED_CLOCK |
3617                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3618         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3619
3620         /* Flush pending bus write */
3621         CSR_READ_4(sc, BWI_STATE_LO);
3622         DELAY(1);
3623
3624         /* Enable regwin with normal clock */
3625         state_lo = BWI_STATE_LO_CLOCK |
3626                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3627         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3628
3629         /* Flush pending bus write */
3630         CSR_READ_4(sc, BWI_STATE_LO);
3631         DELAY(1);
3632 }
3633
3634 static void
3635 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3636 {
3637         struct ieee80211com *ic = &sc->sc_ic;
3638         struct bwi_mac *mac;
3639         struct bwi_myaddr_bssid buf;
3640         const uint8_t *p;
3641         uint32_t val;
3642         int n, i;
3643
3644         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3645         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3646
3647         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3648
3649         bcopy(ic->ic_myaddr, buf.myaddr, sizeof(buf.myaddr));
3650         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3651
3652         n = sizeof(buf) / sizeof(val);
3653         p = (const uint8_t *)&buf;
3654         for (i = 0; i < n; ++i) {
3655                 int j;
3656
3657                 val = 0;
3658                 for (j = 0; j < sizeof(val); ++j)
3659                         val |= ((uint32_t)(*p++)) << (j * 8);
3660
3661                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3662         }
3663 }
3664
3665 static void
3666 bwi_updateslot(struct ifnet *ifp)
3667 {
3668         struct bwi_softc *sc = ifp->if_softc;
3669         struct ieee80211com *ic = &sc->sc_ic;
3670         struct bwi_mac *mac;
3671
3672         if ((ifp->if_flags & IFF_RUNNING) == 0)
3673                 return;
3674
3675         ASSERT_SERIALIZED(ifp->if_serializer);
3676
3677         DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3678
3679         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3680         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3681
3682         bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3683 }
3684
3685 static void
3686 bwi_calibrate(void *xsc)
3687 {
3688         struct bwi_softc *sc = xsc;
3689         struct ieee80211com *ic = &sc->sc_ic;
3690         struct ifnet *ifp = &ic->ic_if;
3691
3692         lwkt_serialize_enter(ifp->if_serializer);
3693
3694         if (ic->ic_state == IEEE80211_S_RUN) {
3695                 struct bwi_mac *mac;
3696
3697                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3698                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3699
3700                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
3701                         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3702                         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3703                 }
3704
3705                 /* XXX 15 seconds */
3706                 callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3707         }
3708
3709         lwkt_serialize_exit(ifp->if_serializer);
3710 }
3711
3712 static int
3713 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3714 {
3715         struct bwi_mac *mac;
3716
3717         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3718         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3719
3720         return bwi_rf_calc_rssi(mac, hdr);
3721 }
3722
3723 static void
3724 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3725                 struct bwi_rxbuf_hdr *hdr, const void *plcp,
3726                 int rate, int rssi)
3727 {
3728         const struct ieee80211_frame_min *wh;
3729
3730         KKASSERT(sc->sc_drvbpf != NULL);
3731
3732         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3733         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3734                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3735
3736         wh = mtod(m, const struct ieee80211_frame_min *);
3737         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3738                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3739
3740         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3741         sc->sc_rx_th.wr_rate = rate;
3742         sc->sc_rx_th.wr_antsignal = rssi;
3743         sc->sc_rx_th.wr_antnoise = BWI_NOISE_FLOOR;
3744
3745         bpf_ptap(sc->sc_drvbpf, m, &sc->sc_rx_th, sc->sc_rx_th_len);
3746 }
3747
3748 static void
3749 bwi_led_attach(struct bwi_softc *sc)
3750 {
3751         const uint8_t *led_act = NULL;
3752         uint16_t gpio, val[BWI_LED_MAX];
3753         int i;
3754
3755         for (i = 0; i < NELEM(bwi_vendor_led_act); ++i) {
3756                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3757                         led_act = bwi_vendor_led_act[i].led_act;
3758                         break;
3759                 }
3760         }
3761         if (led_act == NULL)
3762                 led_act = bwi_default_led_act;
3763
3764         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3765         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3766         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3767
3768         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3769         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3770         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3771
3772         for (i = 0; i < BWI_LED_MAX; ++i) {
3773                 struct bwi_led *led = &sc->sc_leds[i];
3774
3775                 if (val[i] == 0xff) {
3776                         led->l_act = led_act[i];
3777                 } else {
3778                         if (val[i] & BWI_LED_ACT_LOW)
3779                                 led->l_flags |= BWI_LED_F_ACTLOW;
3780                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3781                 }
3782                 led->l_mask = (1 << i);
3783
3784                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3785                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3786                     led->l_act == BWI_LED_ACT_BLINK) {
3787                         led->l_flags |= BWI_LED_F_BLINK;
3788                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3789                                 led->l_flags |= BWI_LED_F_POLLABLE;
3790                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3791                                 led->l_flags |= BWI_LED_F_SLOW;
3792
3793                         if (sc->sc_blink_led == NULL) {
3794                                 sc->sc_blink_led = led;
3795                                 if (led->l_flags & BWI_LED_F_SLOW)
3796                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3797                         }
3798                 }
3799
3800                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3801                         "%dth led, act %d, lowact %d\n", i,
3802                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3803         }
3804         callout_init(&sc->sc_led_blink_ch);
3805 }
3806
3807 static __inline uint16_t
3808 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3809 {
3810         if (led->l_flags & BWI_LED_F_ACTLOW)
3811                 on = !on;
3812         if (on)
3813                 val |= led->l_mask;
3814         else
3815                 val &= ~led->l_mask;
3816         return val;
3817 }
3818
3819 static void
3820 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3821 {
3822         struct ieee80211com *ic = &sc->sc_ic;
3823         uint16_t val;
3824         int i;
3825
3826         if (nstate == IEEE80211_S_INIT) {
3827                 callout_stop(&sc->sc_led_blink_ch);
3828                 sc->sc_led_blinking = 0;
3829         }
3830
3831         if ((ic->ic_if.if_flags & IFF_RUNNING) == 0)
3832                 return;
3833
3834         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3835         for (i = 0; i < BWI_LED_MAX; ++i) {
3836                 struct bwi_led *led = &sc->sc_leds[i];
3837                 int on;
3838
3839                 if (led->l_act == BWI_LED_ACT_UNKN ||
3840                     led->l_act == BWI_LED_ACT_NULL)
3841                         continue;
3842
3843                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3844                     nstate != IEEE80211_S_INIT)
3845                         continue;
3846
3847                 switch (led->l_act) {
3848                 case BWI_LED_ACT_ON:            /* Always on */
3849                         on = 1;
3850                         break;
3851                 case BWI_LED_ACT_OFF:           /* Always off */
3852                 case BWI_LED_ACT_5GHZ:          /* TODO: 11A */
3853                         on = 0;
3854                         break;
3855                 default:
3856                         on = 1;
3857                         switch (nstate) {
3858                         case IEEE80211_S_INIT:
3859                                 on = 0;
3860                                 break;
3861                         case IEEE80211_S_RUN:
3862                                 if (led->l_act == BWI_LED_ACT_11G &&
3863                                     ic->ic_curmode != IEEE80211_MODE_11G)
3864                                         on = 0;
3865                                 break;
3866                         default:
3867                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3868                                         on = 0;
3869                                 break;
3870                         }
3871                         break;
3872                 }
3873
3874                 val = bwi_led_onoff(led, val, on);
3875         }
3876         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3877 }
3878
3879 static void
3880 bwi_led_event(struct bwi_softc *sc, int event)
3881 {
3882         struct bwi_led *led = sc->sc_blink_led;
3883         int rate;
3884
3885         if (event == BWI_LED_EVENT_POLL) {
3886                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3887                         return;
3888                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3889                         return;
3890         }
3891
3892         sc->sc_led_ticks = ticks;
3893         if (sc->sc_led_blinking)
3894                 return;
3895
3896         switch (event) {
3897         case BWI_LED_EVENT_RX:
3898                 rate = sc->sc_rx_rate;
3899                 break;
3900         case BWI_LED_EVENT_TX:
3901                 rate = sc->sc_tx_rate;
3902                 break;
3903         case BWI_LED_EVENT_POLL:
3904                 rate = 0;
3905                 break;
3906         default:
3907                 panic("unknown LED event %d\n", event);
3908                 break;
3909         }
3910         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3911                             bwi_led_duration[rate].off_dur);
3912 }
3913
3914 static void
3915 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
3916 {
3917         struct bwi_led *led = sc->sc_blink_led;
3918         uint16_t val;
3919
3920         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3921         val = bwi_led_onoff(led, val, 1);
3922         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3923
3924         if (led->l_flags & BWI_LED_F_SLOW) {
3925                 BWI_LED_SLOWDOWN(on_dur);
3926                 BWI_LED_SLOWDOWN(off_dur);
3927         }
3928
3929         sc->sc_led_blinking = 1;
3930         sc->sc_led_blink_offdur = off_dur;
3931
3932         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
3933 }
3934
3935 static void
3936 bwi_led_blink_next(void *xsc)
3937 {
3938         struct bwi_softc *sc = xsc;
3939         uint16_t val;
3940
3941         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3942         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
3943         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3944
3945         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
3946                       bwi_led_blink_end, sc);
3947 }
3948
3949 static void
3950 bwi_led_blink_end(void *xsc)
3951 {
3952         struct bwi_softc *sc = xsc;
3953
3954         sc->sc_led_blinking = 0;
3955 }
3956
3957 static void *
3958 bwi_ratectl_attach(struct ieee80211com *ic, u_int rc)
3959 {
3960         struct bwi_softc *sc = ic->ic_if.if_softc;
3961
3962         switch (rc) {
3963         case IEEE80211_RATECTL_ONOE:
3964                 return &sc->sc_onoe_param;
3965         case IEEE80211_RATECTL_NONE:
3966                 /* This could only happen during detaching */
3967                 return NULL;
3968         default:
3969                 panic("unknown rate control algo %u\n", rc);
3970                 return NULL;
3971         }
3972 }