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 "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 *, struct ifaltq_subque *);
  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         DEVMETHOD_END
 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", 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", 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         char ethstr[ETHER_ADDRSTRLEN + 1];
 536         int i, error;
 537
 538         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 539         sc->sc_dev = dev;
 540
 541         /*
 542          * Initialize sysctl variables
 543          */
 544         sc->sc_fw_version = BWI_FW_VERSION3;
 545         sc->sc_dwell_time = 200;
 546         sc->sc_led_idle = (2350 * hz) / 1000;
 547         sc->sc_led_blink = 1;
 548         sc->sc_txpwr_calib = 1;
 549 #ifdef BWI_DEBUG
 550         sc->sc_debug = bwi_debug;
 551 #endif
 552
 553         callout_init(&sc->sc_scan_ch);
 554         callout_init(&sc->sc_calib_ch);
 555
 556 #ifndef BURN_BRIDGES
 557         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 558                 uint32_t irq, mem;
 559
 560                 /* XXX Save more PCIR */
 561                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 562                 mem = pci_read_config(dev, BWI_PCIR_BAR, 4);
 563
 564                 device_printf(dev, "chip is in D%d power mode "
 565                     "-- setting to D0\n", pci_get_powerstate(dev));
 566
 567                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 568
 569                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 570                 pci_write_config(dev, BWI_PCIR_BAR, mem, 4);
 571         }
 572 #endif  /* !BURN_BRIDGE */
 573
 574         pci_enable_busmaster(dev);
 575
 576         /* Get more PCI information */
 577         sc->sc_pci_revid = pci_get_revid(dev);
 578         sc->sc_pci_subvid = pci_get_subvendor(dev);
 579         sc->sc_pci_subdid = pci_get_subdevice(dev);
 580
 581         /*
 582          * Allocate IO memory
 583          */
 584         sc->sc_mem_rid = BWI_PCIR_BAR;
 585         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 586                                                 &sc->sc_mem_rid, RF_ACTIVE);
 587         if (sc->sc_mem_res == NULL) {
 588                 device_printf(dev, "can't allocate IO memory\n");
 589                 return ENXIO;
 590         }
 591         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
 592         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
 593
 594         /*
 595          * Allocate IRQ
 596          */
 597         sc->sc_irq_rid = 0;
 598         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 599                                                 &sc->sc_irq_rid,
 600                                                 RF_SHAREABLE | RF_ACTIVE);
 601         if (sc->sc_irq_res == NULL) {
 602                 device_printf(dev, "can't allocate irq\n");
 603                 error = ENXIO;
 604                 goto fail;
 605         }
 606
 607         /*
 608          * Create sysctl tree
 609          */
 610         sysctl_ctx_init(&sc->sc_sysctl_ctx);
 611         sc->sc_sysctl_tree = SYSCTL_ADD_NODE(&sc->sc_sysctl_ctx,
 612                                              SYSCTL_STATIC_CHILDREN(_hw),
 613                                              OID_AUTO,
 614                                              device_get_nameunit(dev),
 615                                              CTLFLAG_RD, 0, "");
 616         if (sc->sc_sysctl_tree == NULL) {
 617                 device_printf(dev, "can't add sysctl node\n");
 618                 error = ENXIO;
 619                 goto fail;
 620         }
 621
 622         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 623                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 624                         "dwell_time", CTLFLAG_RW, &sc->sc_dwell_time, 0,
 625                         "Channel dwell time during scan (msec)");
 626         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 627                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 628                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 629                         "Firmware version");
 630         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 631                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 632                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 633                         "# ticks before LED enters idle state");
 634         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 635                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 636                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 637                        "Allow LED to blink");
 638         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 639                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 640                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 641                        "Enable software TX power calibration");
 642 #ifdef BWI_DEBUG
 643         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 644                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 645                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 646 #endif
 647
 648         bwi_power_on(sc, 1);
 649
 650         error = bwi_bbp_attach(sc);
 651         if (error)
 652                 goto fail;
 653
 654         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 655         if (error)
 656                 goto fail;
 657
 658         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 659                 error = bwi_set_clock_delay(sc);
 660                 if (error)
 661                         goto fail;
 662
 663                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 664                 if (error)
 665                         goto fail;
 666
 667                 error = bwi_get_pwron_delay(sc);
 668                 if (error)
 669                         goto fail;
 670         }
 671
 672         error = bwi_bus_attach(sc);
 673         if (error)
 674                 goto fail;
 675
 676         bwi_get_card_flags(sc);
 677
 678         bwi_led_attach(sc);
 679
 680         for (i = 0; i < sc->sc_nmac; ++i) {
 681                 struct bwi_regwin *old;
 682
 683                 mac = &sc->sc_mac[i];
 684                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 685                 if (error)
 686                         goto fail;
 687
 688                 error = bwi_mac_lateattach(mac);
 689                 if (error)
 690                         goto fail;
 691
 692                 error = bwi_regwin_switch(sc, old, NULL);
 693                 if (error)
 694                         goto fail;
 695         }
 696
 697         /*
 698          * XXX First MAC is known to exist
 699          * TODO2
 700          */
 701         mac = &sc->sc_mac[0];
 702         phy = &mac->mac_phy;
 703
 704         bwi_bbp_power_off(sc);
 705
 706         error = bwi_dma_alloc(sc);
 707         if (error)
 708                 goto fail;
 709
 710         ifp->if_softc = sc;
 711         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 712         ifp->if_init = bwi_init;
 713         ifp->if_ioctl = bwi_ioctl;
 714         ifp->if_start = bwi_start;
 715         ifp->if_watchdog = bwi_watchdog;
 716         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 717 #ifdef notyet
 718         ifq_set_ready(&ifp->if_snd);
 719 #endif
 720
 721         /* Get locale */
 722         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 723                                    BWI_SPROM_CARD_INFO_LOCALE);
 724         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 725
 726         /*
 727          * Setup ratesets, phytype, channels and get MAC address
 728          */
 729         if (phy->phy_mode == IEEE80211_MODE_11B ||
 730             phy->phy_mode == IEEE80211_MODE_11G) {
 731                 uint16_t chan_flags;
 732
 733                 ic->ic_sup_rates[IEEE80211_MODE_11B] = bwi_rateset_11b;
 734
 735                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 736                         chan_flags = IEEE80211_CHAN_B;
 737                         ic->ic_phytype = IEEE80211_T_DS;
 738                 } else {
 739                         chan_flags = IEEE80211_CHAN_CCK |
 740                                      IEEE80211_CHAN_OFDM |
 741                                      IEEE80211_CHAN_DYN |
 742                                      IEEE80211_CHAN_2GHZ;
 743                         ic->ic_phytype = IEEE80211_T_OFDM;
 744                         ic->ic_sup_rates[IEEE80211_MODE_11G] =
 745                                 bwi_rateset_11g;
 746                 }
 747
 748                 /* XXX depend on locale */
 749                 for (i = 1; i <= 14; ++i) {
 750                         ic->ic_channels[i].ic_freq =
 751                                 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 752                         ic->ic_channels[i].ic_flags = chan_flags;
 753                 }
 754
 755                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, ic->ic_myaddr);
 756                 if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 757                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, ic->ic_myaddr);
 758                         if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 759                                 device_printf(dev, "invalid MAC address: "
 760                                     "%s\n", kether_ntoa(ic->ic_myaddr, ethstr));
 761                         }
 762                 }
 763         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 764                 /* TODO:11A */
 765                 error = ENXIO;
 766                 goto fail;
 767         } else {
 768                 panic("unknown phymode %d", phy->phy_mode);
 769         }
 770
 771         ic->ic_caps = IEEE80211_C_SHSLOT |
 772                       IEEE80211_C_SHPREAMBLE |
 773                       IEEE80211_C_WPA |
 774                       IEEE80211_C_MONITOR;
 775         ic->ic_state = IEEE80211_S_INIT;
 776         ic->ic_opmode = IEEE80211_M_STA;
 777
 778         IEEE80211_ONOE_PARAM_SETUP(&sc->sc_onoe_param);
 779         ic->ic_ratectl.rc_st_ratectl_cap = IEEE80211_RATECTL_CAP_ONOE;
 780         ic->ic_ratectl.rc_st_ratectl = IEEE80211_RATECTL_ONOE;
 781         ic->ic_ratectl.rc_st_attach = bwi_ratectl_attach;
 782
 783         ic->ic_updateslot = bwi_updateslot;
 784
 785         ieee80211_ifattach(ic);
 786
 787         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 788         ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
 789
 790         sc->sc_newstate = ic->ic_newstate;
 791         ic->ic_newstate = bwi_newstate;
 792
 793         ieee80211_media_init(ic, bwi_media_change, ieee80211_media_status);
 794
 795         /*
 796          * Attach radio tap
 797          */
 798         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 799                       sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
 800                       &sc->sc_drvbpf);
 801
 802         sc->sc_tx_th_len = roundup(sizeof(sc->sc_tx_th), sizeof(uint32_t));
 803         sc->sc_tx_th.wt_ihdr.it_len = htole16(sc->sc_tx_th_len);
 804         sc->sc_tx_th.wt_ihdr.it_present = htole32(BWI_TX_RADIOTAP_PRESENT);
 805
 806         sc->sc_rx_th_len = roundup(sizeof(sc->sc_rx_th), sizeof(uint32_t));
 807         sc->sc_rx_th.wr_ihdr.it_len = htole16(sc->sc_rx_th_len);
 808         sc->sc_rx_th.wr_ihdr.it_present = htole32(BWI_RX_RADIOTAP_PRESENT);
 809
 810         ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->sc_irq_res));
 811
 812         error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, bwi_intr, sc,
 813                                &sc->sc_irq_handle, ifp->if_serializer);
 814         if (error) {
 815                 device_printf(dev, "can't setup intr\n");
 816                 bpfdetach(ifp);
 817                 ieee80211_ifdetach(ic);
 818                 goto fail;
 819         }
 820
 821         if (bootverbose)
 822                 ieee80211_announce(ic);
 823
 824         return 0;
 825 fail:
 826         bwi_detach(dev);
 827         return error;
 828 }
 829
 830 static int
 831 bwi_detach(device_t dev)
 832 {
 833         struct bwi_softc *sc = device_get_softc(dev);
 834
 835         if (device_is_attached(dev)) {
 836                 struct ifnet *ifp = &sc->sc_ic.ic_if;
 837                 int i;
 838
 839                 lwkt_serialize_enter(ifp->if_serializer);
 840                 bwi_stop(sc, 1);
 841                 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 842                 lwkt_serialize_exit(ifp->if_serializer);
 843
 844                 bpfdetach(ifp);
 845                 ieee80211_ifdetach(&sc->sc_ic);
 846
 847                 for (i = 0; i < sc->sc_nmac; ++i)
 848                         bwi_mac_detach(&sc->sc_mac[i]);
 849         }
 850
 851         if (sc->sc_sysctl_tree != NULL)
 852                 sysctl_ctx_free(&sc->sc_sysctl_ctx);
 853
 854         if (sc->sc_irq_res != NULL) {
 855                 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
 856                                      sc->sc_irq_res);
 857         }
 858
 859         if (sc->sc_mem_res != NULL) {
 860                 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid,
 861                                      sc->sc_mem_res);
 862         }
 863
 864         bwi_dma_free(sc);
 865
 866         return 0;
 867 }
 868
 869 static int
 870 bwi_shutdown(device_t dev)
 871 {
 872         struct bwi_softc *sc = device_get_softc(dev);
 873         struct ifnet *ifp = &sc->sc_ic.ic_if;
 874
 875         lwkt_serialize_enter(ifp->if_serializer);
 876         bwi_stop(sc, 1);
 877         lwkt_serialize_exit(ifp->if_serializer);
 878         return 0;
 879 }
 880
 881 static void
 882 bwi_power_on(struct bwi_softc *sc, int with_pll)
 883 {
 884         uint32_t gpio_in, gpio_out, gpio_en;
 885         uint16_t status;
 886
 887         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 888         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 889                 goto back;
 890
 891         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 892         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 893
 894         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 895         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 896         if (with_pll) {
 897                 /* Turn off PLL first */
 898                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 899                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 900         }
 901
 902         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 903         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 904         DELAY(1000);
 905
 906         if (with_pll) {
 907                 /* Turn on PLL */
 908                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 909                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 910                 DELAY(5000);
 911         }
 912
 913 back:
 914         /* Clear "Signaled Target Abort" */
 915         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 916         status &= ~PCIM_STATUS_STABORT;
 917         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 918 }
 919
 920 static int
 921 bwi_power_off(struct bwi_softc *sc, int with_pll)
 922 {
 923         uint32_t gpio_out, gpio_en;
 924
 925         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 926         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 927         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 928
 929         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 930         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 931         if (with_pll) {
 932                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 933                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 934         }
 935
 936         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 937         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 938         return 0;
 939 }
 940
 941 int
 942 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 943                   struct bwi_regwin **old_rw)
 944 {
 945         int error;
 946
 947         if (old_rw != NULL)
 948                 *old_rw = NULL;
 949
 950         if (!BWI_REGWIN_EXIST(rw))
 951                 return EINVAL;
 952
 953         if (sc->sc_cur_regwin != rw) {
 954                 error = bwi_regwin_select(sc, rw->rw_id);
 955                 if (error) {
 956                         if_printf(&sc->sc_ic.ic_if, "can't select regwin %d\n",
 957                                   rw->rw_id);
 958                         return error;
 959                 }
 960         }
 961
 962         if (old_rw != NULL)
 963                 *old_rw = sc->sc_cur_regwin;
 964         sc->sc_cur_regwin = rw;
 965         return 0;
 966 }
 967
 968 static int
 969 bwi_regwin_select(struct bwi_softc *sc, int id)
 970 {
 971         uint32_t win = BWI_PCIM_REGWIN(id);
 972         int i;
 973
 974 #define RETRY_MAX       50
 975         for (i = 0; i < RETRY_MAX; ++i) {
 976                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 977                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 978                         return 0;
 979                 DELAY(10);
 980         }
 981 #undef RETRY_MAX
 982
 983         return ENXIO;
 984 }
 985
 986 static void
 987 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 988 {
 989         uint32_t val;
 990
 991         val = CSR_READ_4(sc, BWI_ID_HI);
 992         *type = BWI_ID_HI_REGWIN_TYPE(val);
 993         *rev = BWI_ID_HI_REGWIN_REV(val);
 994
 995         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 996                 "vendor 0x%04x\n", *type, *rev,
 997                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 998 }
 999
1000 static int
1001 bwi_bbp_attach(struct bwi_softc *sc)
1002 {
1003         uint16_t bbp_id, rw_type;
1004         uint8_t rw_rev;
1005         uint32_t info;
1006         int error, nregwin, i;
1007
1008         /*
1009          * Get 0th regwin information
1010          * NOTE: 0th regwin should exist
1011          */
1012         error = bwi_regwin_select(sc, 0);
1013         if (error) {
1014                 device_printf(sc->sc_dev, "can't select regwin 0\n");
1015                 return error;
1016         }
1017         bwi_regwin_info(sc, &rw_type, &rw_rev);
1018
1019         /*
1020          * Find out BBP id
1021          */
1022         bbp_id = 0;
1023         info = 0;
1024         if (rw_type == BWI_REGWIN_T_COM) {
1025                 info = CSR_READ_4(sc, BWI_INFO);
1026                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
1027
1028                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
1029
1030                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
1031         } else {
1032                 uint16_t did = pci_get_device(sc->sc_dev);
1033                 uint8_t revid = pci_get_revid(sc->sc_dev);
1034
1035                 for (i = 0; i < NELEM(bwi_bbpid_map); ++i) {
1036                         if (did >= bwi_bbpid_map[i].did_min &&
1037                             did <= bwi_bbpid_map[i].did_max) {
1038                                 bbp_id = bwi_bbpid_map[i].bbp_id;
1039                                 break;
1040                         }
1041                 }
1042                 if (bbp_id == 0) {
1043                         device_printf(sc->sc_dev, "no BBP id for device id "
1044                                       "0x%04x\n", did);
1045                         return ENXIO;
1046                 }
1047
1048                 info = __SHIFTIN(revid, BWI_INFO_BBPREV_MASK) |
1049                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
1050         }
1051
1052         /*
1053          * Find out number of regwins
1054          */
1055         nregwin = 0;
1056         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
1057                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
1058         } else {
1059                 for (i = 0; i < NELEM(bwi_regwin_count); ++i) {
1060                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
1061                                 nregwin = bwi_regwin_count[i].nregwin;
1062                                 break;
1063                         }
1064                 }
1065                 if (nregwin == 0) {
1066                         device_printf(sc->sc_dev, "no number of win for "
1067                                       "BBP id 0x%04x\n", bbp_id);
1068                         return ENXIO;
1069                 }
1070         }
1071
1072         /* Record BBP id/rev for later using */
1073         sc->sc_bbp_id = bbp_id;
1074         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
1075         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
1076         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
1077                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
1078
1079         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
1080                 nregwin, sc->sc_cap);
1081
1082         /*
1083          * Create rest of the regwins
1084          */
1085
1086         /* Don't re-create common regwin, if it is already created */
1087         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
1088
1089         for (; i < nregwin; ++i) {
1090                 /*
1091                  * Get regwin information
1092                  */
1093                 error = bwi_regwin_select(sc, i);
1094                 if (error) {
1095                         device_printf(sc->sc_dev,
1096                                       "can't select regwin %d\n", i);
1097                         return error;
1098                 }
1099                 bwi_regwin_info(sc, &rw_type, &rw_rev);
1100
1101                 /*
1102                  * Try attach:
1103                  * 1) Bus (PCI/PCIE) regwin
1104                  * 2) MAC regwin
1105                  * Ignore rest types of regwin
1106                  */
1107                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
1108                     rw_type == BWI_REGWIN_T_BUSPCIE) {
1109                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1110                                 device_printf(sc->sc_dev,
1111                                               "bus regwin already exists\n");
1112                         } else {
1113                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
1114                                                   rw_type, rw_rev);
1115                         }
1116                 } else if (rw_type == BWI_REGWIN_T_MAC) {
1117                         /* XXX ignore return value */
1118                         bwi_mac_attach(sc, i, rw_rev);
1119                 }
1120         }
1121
1122         /* At least one MAC shold exist */
1123         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
1124                 device_printf(sc->sc_dev, "no MAC was found\n");
1125                 return ENXIO;
1126         }
1127         KKASSERT(sc->sc_nmac > 0);
1128
1129         /* Bus regwin must exist */
1130         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1131                 device_printf(sc->sc_dev, "no bus regwin was found\n");
1132                 return ENXIO;
1133         }
1134
1135         /* Start with first MAC */
1136         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
1137         if (error)
1138                 return error;
1139
1140         return 0;
1141 }
1142
1143 int
1144 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
1145 {
1146         struct bwi_regwin *old, *bus;
1147         uint32_t val;
1148         int error;
1149
1150         bus = &sc->sc_bus_regwin;
1151         KKASSERT(sc->sc_cur_regwin == &mac->mac_regwin);
1152
1153         /*
1154          * Tell bus to generate requested interrupts
1155          */
1156         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1157                 /*
1158                  * NOTE: Read BWI_FLAGS from MAC regwin
1159                  */
1160                 val = CSR_READ_4(sc, BWI_FLAGS);
1161
1162                 error = bwi_regwin_switch(sc, bus, &old);
1163                 if (error)
1164                         return error;
1165
1166                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
1167         } else {
1168                 uint32_t mac_mask;
1169
1170                 mac_mask = 1 << mac->mac_id;
1171
1172                 error = bwi_regwin_switch(sc, bus, &old);
1173                 if (error)
1174                         return error;
1175
1176                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
1177                 val |= mac_mask << 8;
1178                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
1179         }
1180
1181         if (sc->sc_flags & BWI_F_BUS_INITED)
1182                 goto back;
1183
1184         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1185                 /*
1186                  * Enable prefetch and burst
1187                  */
1188                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
1189                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
1190
1191                 if (bus->rw_rev < 5) {
1192                         struct bwi_regwin *com = &sc->sc_com_regwin;
1193
1194                         /*
1195                          * Configure timeouts for bus operation
1196                          */
1197
1198                         /*
1199                          * Set service timeout and request timeout
1200                          */
1201                         CSR_SETBITS_4(sc, BWI_CONF_LO,
1202                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
1203                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
1204
1205                         /*
1206                          * If there is common regwin, we switch to that regwin
1207                          * and switch back to bus regwin once we have done.
1208                          */
1209                         if (BWI_REGWIN_EXIST(com)) {
1210                                 error = bwi_regwin_switch(sc, com, NULL);
1211                                 if (error)
1212                                         return error;
1213                         }
1214
1215                         /* Let bus know what we have changed */
1216                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
1217                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
1218                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
1219                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
1220
1221                         if (BWI_REGWIN_EXIST(com)) {
1222                                 error = bwi_regwin_switch(sc, bus, NULL);
1223                                 if (error)
1224                                         return error;
1225                         }
1226                 } else if (bus->rw_rev >= 11) {
1227                         /*
1228                          * Enable memory read multiple
1229                          */
1230                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1231                 }
1232         } else {
1233                 /* TODO:PCIE */
1234         }
1235
1236         sc->sc_flags |= BWI_F_BUS_INITED;
1237 back:
1238         return bwi_regwin_switch(sc, old, NULL);
1239 }
1240
1241 static void
1242 bwi_get_card_flags(struct bwi_softc *sc)
1243 {
1244         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1245         if (sc->sc_card_flags == 0xffff)
1246                 sc->sc_card_flags = 0;
1247
1248         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1249             sc->sc_pci_subdid == 0x4e && /* XXX */
1250             sc->sc_pci_revid > 0x40)
1251                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1252
1253         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1254 }
1255
1256 static void
1257 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1258 {
1259         int i;
1260
1261         for (i = 0; i < 3; ++i) {
1262                 *((uint16_t *)eaddr + i) =
1263                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1264         }
1265 }
1266
1267 static void
1268 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1269 {
1270         struct bwi_regwin *com;
1271         uint32_t val;
1272         u_int div;
1273         int src;
1274
1275         bzero(freq, sizeof(*freq));
1276         com = &sc->sc_com_regwin;
1277
1278         KKASSERT(BWI_REGWIN_EXIST(com));
1279         KKASSERT(sc->sc_cur_regwin == com);
1280         KKASSERT(sc->sc_cap & BWI_CAP_CLKMODE);
1281
1282         /*
1283          * Calculate clock frequency
1284          */
1285         src = -1;
1286         div = 0;
1287         if (com->rw_rev < 6) {
1288                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1289                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1290                         src = BWI_CLKSRC_PCI;
1291                         div = 64;
1292                 } else {
1293                         src = BWI_CLKSRC_CS_OSC;
1294                         div = 32;
1295                 }
1296         } else if (com->rw_rev < 10) {
1297                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1298
1299                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1300                 if (src == BWI_CLKSRC_LP_OSC) {
1301                         div = 1;
1302                 } else {
1303                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1304
1305                         /* Unknown source */
1306                         if (src >= BWI_CLKSRC_MAX)
1307                                 src = BWI_CLKSRC_CS_OSC;
1308                 }
1309         } else {
1310                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1311
1312                 src = BWI_CLKSRC_CS_OSC;
1313                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1314         }
1315
1316         KKASSERT(src >= 0 && src < BWI_CLKSRC_MAX);
1317         KKASSERT(div != 0);
1318
1319         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1320                 src == BWI_CLKSRC_PCI ? "PCI" :
1321                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1322
1323         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1324         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1325
1326         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1327                 freq->clkfreq_min, freq->clkfreq_max);
1328 }
1329
1330 static int
1331 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1332 {
1333         struct bwi_regwin *old, *com;
1334         uint32_t clk_ctrl, clk_src;
1335         int error, pwr_off = 0;
1336
1337         com = &sc->sc_com_regwin;
1338         if (!BWI_REGWIN_EXIST(com))
1339                 return 0;
1340
1341         if (com->rw_rev >= 10 || com->rw_rev < 6)
1342                 return 0;
1343
1344         /*
1345          * For common regwin whose rev is [6, 10), the chip
1346          * must be capable to change clock mode.
1347          */
1348         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1349                 return 0;
1350
1351         error = bwi_regwin_switch(sc, com, &old);
1352         if (error)
1353                 return error;
1354
1355         if (clk_mode == BWI_CLOCK_MODE_FAST)
1356                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1357
1358         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1359         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1360
1361         switch (clk_mode) {
1362         case BWI_CLOCK_MODE_FAST:
1363                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1364                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1365                 break;
1366         case BWI_CLOCK_MODE_SLOW:
1367                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1368                 break;
1369         case BWI_CLOCK_MODE_DYN:
1370                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1371                               BWI_CLOCK_CTRL_IGNPLL |
1372                               BWI_CLOCK_CTRL_NODYN);
1373                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1374                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1375                         pwr_off = 1;
1376                 }
1377                 break;
1378         }
1379         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1380
1381         if (pwr_off)
1382                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1383
1384         return bwi_regwin_switch(sc, old, NULL);
1385 }
1386
1387 static int
1388 bwi_set_clock_delay(struct bwi_softc *sc)
1389 {
1390         struct bwi_regwin *old, *com;
1391         int error;
1392
1393         com = &sc->sc_com_regwin;
1394         if (!BWI_REGWIN_EXIST(com))
1395                 return 0;
1396
1397         error = bwi_regwin_switch(sc, com, &old);
1398         if (error)
1399                 return error;
1400
1401         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1402                 if (sc->sc_bbp_rev == 0)
1403                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1404                 else if (sc->sc_bbp_rev == 1)
1405                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1406         }
1407
1408         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1409                 if (com->rw_rev >= 10) {
1410                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1411                 } else {
1412                         struct bwi_clock_freq freq;
1413
1414                         bwi_get_clock_freq(sc, &freq);
1415                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1416                                 howmany(freq.clkfreq_max * 150, 1000000));
1417                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1418                                 howmany(freq.clkfreq_max * 15, 1000000));
1419                 }
1420         }
1421
1422         return bwi_regwin_switch(sc, old, NULL);
1423 }
1424
1425 static void
1426 bwi_init(void *xsc)
1427 {
1428         bwi_init_statechg(xsc, 1);
1429 }
1430
1431 static void
1432 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1433 {
1434         struct ieee80211com *ic = &sc->sc_ic;
1435         struct ifnet *ifp = &ic->ic_if;
1436         struct bwi_mac *mac;
1437         int error;
1438
1439         ASSERT_SERIALIZED(ifp->if_serializer);
1440
1441         error = bwi_stop(sc, statechg);
1442         if (error) {
1443                 if_printf(ifp, "can't stop\n");
1444                 return;
1445         }
1446
1447         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1448
1449         /* TODO: 2 MAC */
1450
1451         mac = &sc->sc_mac[0];
1452         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1453         if (error)
1454                 goto back;
1455
1456         error = bwi_mac_init(mac);
1457         if (error)
1458                 goto back;
1459
1460         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1461
1462         bcopy(IF_LLADDR(ifp), ic->ic_myaddr, sizeof(ic->ic_myaddr));
1463
1464         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1465         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, ic->ic_myaddr);
1466
1467         bwi_mac_reset_hwkeys(mac);
1468
1469         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1470                 int i;
1471
1472 #define NRETRY  1000
1473                 /*
1474                  * Drain any possible pending TX status
1475                  */
1476                 for (i = 0; i < NRETRY; ++i) {
1477                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1478                              BWI_TXSTATUS0_VALID) == 0)
1479                                 break;
1480                         CSR_READ_4(sc, BWI_TXSTATUS1);
1481                 }
1482                 if (i == NRETRY)
1483                         if_printf(ifp, "can't drain TX status\n");
1484 #undef NRETRY
1485         }
1486
1487         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1488                 bwi_mac_updateslot(mac, 1);
1489
1490         /* Start MAC */
1491         error = bwi_mac_start(mac);
1492         if (error)
1493                 goto back;
1494
1495         /* Enable intrs */
1496         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1497
1498         ifp->if_flags |= IFF_RUNNING;
1499         ifq_clr_oactive(&ifp->if_snd);
1500
1501         if (statechg) {
1502                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
1503                         if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
1504                                 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
1505                 } else {
1506                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1507                 }
1508         } else {
1509                 ieee80211_new_state(ic, ic->ic_state, -1);
1510         }
1511 back:
1512         if (error)
1513                 bwi_stop(sc, 1);
1514         else
1515                 ifp->if_start(ifp);
1516 }
1517
1518 static int
1519 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t req, struct ucred *cr)
1520 {
1521         struct bwi_softc *sc = ifp->if_softc;
1522         int error = 0;
1523
1524         ASSERT_SERIALIZED(ifp->if_serializer);
1525
1526         switch (cmd) {
1527         case SIOCSIFFLAGS:
1528                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1529                     (IFF_UP | IFF_RUNNING)) {
1530                         struct bwi_mac *mac;
1531                         int promisc = -1;
1532
1533                         KKASSERT(sc->sc_cur_regwin->rw_type ==
1534                                  BWI_REGWIN_T_MAC);
1535                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1536
1537                         if ((ifp->if_flags & IFF_PROMISC) &&
1538                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1539                                 promisc = 1;
1540                                 sc->sc_flags |= BWI_F_PROMISC;
1541                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1542                                    (sc->sc_flags & BWI_F_PROMISC)) {
1543                                 promisc = 0;
1544                                 sc->sc_flags &= ~BWI_F_PROMISC;
1545                         }
1546
1547                         if (promisc >= 0)
1548                                 bwi_mac_set_promisc(mac, promisc);
1549                 }
1550
1551                 if (ifp->if_flags & IFF_UP) {
1552                         if ((ifp->if_flags & IFF_RUNNING) == 0)
1553                                 bwi_init(sc);
1554                 } else {
1555                         if (ifp->if_flags & IFF_RUNNING)
1556                                 bwi_stop(sc, 1);
1557                 }
1558                 break;
1559         default:
1560                 error = ieee80211_ioctl(&sc->sc_ic, cmd, req, cr);
1561                 break;
1562         }
1563
1564         if (error == ENETRESET) {
1565                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1566                     (IFF_UP | IFF_RUNNING))
1567                         bwi_init(sc);
1568                 error = 0;
1569         }
1570         return error;
1571 }
1572
1573 static void
1574 bwi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
1575 {
1576         struct bwi_softc *sc = ifp->if_softc;
1577         struct ieee80211com *ic = &sc->sc_ic;
1578         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1579         int trans, idx;
1580
1581         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
1582         ASSERT_SERIALIZED(ifp->if_serializer);
1583
1584         if (ifq_is_oactive(&ifp->if_snd) || (ifp->if_flags & IFF_RUNNING) == 0)
1585                 return;
1586
1587         trans = 0;
1588         idx = tbd->tbd_idx;
1589
1590         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1591                 struct ieee80211_frame *wh;
1592                 struct ieee80211_node *ni;
1593                 struct mbuf *m;
1594                 int mgt_pkt = 0;
1595
1596                 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1597                         IF_DEQUEUE(&ic->ic_mgtq, m);
1598
1599                         ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1600                         m->m_pkthdr.rcvif = NULL;
1601
1602                         mgt_pkt = 1;
1603                 } else if (!ifq_is_empty(&ifp->if_snd)) {
1604                         struct ether_header *eh;
1605
1606                         if (ic->ic_state != IEEE80211_S_RUN) {
1607                                 ifq_purge(&ifp->if_snd);
1608                                 break;
1609                         }
1610
1611                         m = ifq_dequeue(&ifp->if_snd);
1612                         if (m == NULL)
1613                                 break;
1614
1615                         if (m->m_len < sizeof(*eh)) {
1616                                 m = m_pullup(m, sizeof(*eh));
1617                                 if (m == NULL) {
1618                                         IFNET_STAT_INC(ifp, oerrors, 1);
1619                                         continue;
1620                                 }
1621                         }
1622                         eh = mtod(m, struct ether_header *);
1623
1624                         ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1625                         if (ni == NULL) {
1626                                 m_freem(m);
1627                                 IFNET_STAT_INC(ifp, oerrors, 1);
1628                                 continue;
1629                         }
1630
1631                         /* TODO: PS */
1632
1633                         BPF_MTAP(ifp, m);
1634
1635                         m = ieee80211_encap(ic, m, ni);
1636                         if (m == NULL) {
1637                                 ieee80211_free_node(ni);
1638                                 IFNET_STAT_INC(ifp, oerrors, 1);
1639                                 continue;
1640                         }
1641                 } else {
1642                         break;
1643                 }
1644
1645                 if (ic->ic_rawbpf != NULL)
1646                         bpf_mtap(ic->ic_rawbpf, m);
1647
1648                 wh = mtod(m, struct ieee80211_frame *);
1649                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1650                         if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1651                                 ieee80211_free_node(ni);
1652                                 m_freem(m);
1653                                 IFNET_STAT_INC(ifp, oerrors, 1);
1654                                 continue;
1655                         }
1656                 }
1657                 wh = NULL;      /* Catch any invalid use */
1658
1659                 if (bwi_encap(sc, idx, m, &ni, mgt_pkt) != 0) {
1660                         /* 'm' is freed in bwi_encap() if we reach here */
1661                         if (ni != NULL)
1662                                 ieee80211_free_node(ni);
1663                         IFNET_STAT_INC(ifp, oerrors, 1);
1664                         continue;
1665                 }
1666
1667                 trans = 1;
1668                 tbd->tbd_used++;
1669                 idx = (idx + 1) % BWI_TX_NDESC;
1670
1671                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1672                         ifq_set_oactive(&ifp->if_snd);
1673                         break;
1674                 }
1675         }
1676         tbd->tbd_idx = idx;
1677
1678         if (trans)
1679                 sc->sc_tx_timer = 5;
1680         ifp->if_timer = 1;
1681 }
1682
1683 static void
1684 bwi_watchdog(struct ifnet *ifp)
1685 {
1686         struct bwi_softc *sc = ifp->if_softc;
1687
1688         ASSERT_SERIALIZED(ifp->if_serializer);
1689
1690         ifp->if_timer = 0;
1691
1692         if ((ifp->if_flags & IFF_RUNNING) == 0)
1693                 return;
1694
1695         if (sc->sc_tx_timer) {
1696                 if (--sc->sc_tx_timer == 0) {
1697                         if_printf(ifp, "watchdog timeout\n");
1698                         IFNET_STAT_INC(ifp, oerrors, 1);
1699                         /* TODO */
1700                 } else {
1701                         ifp->if_timer = 1;
1702                 }
1703         }
1704         ieee80211_watchdog(&sc->sc_ic);
1705 }
1706
1707 static int
1708 bwi_stop(struct bwi_softc *sc, int state_chg)
1709 {
1710         struct ieee80211com *ic = &sc->sc_ic;
1711         struct ifnet *ifp = &ic->ic_if;
1712         struct bwi_mac *mac;
1713         int i, error, pwr_off = 0;
1714
1715         ASSERT_SERIALIZED(ifp->if_serializer);
1716
1717         if (state_chg)
1718                 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
1719         else
1720                 bwi_newstate_begin(sc, IEEE80211_S_INIT);
1721
1722         if (ifp->if_flags & IFF_RUNNING) {
1723                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1724                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1725
1726                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1727                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1728                 bwi_mac_stop(mac);
1729         }
1730
1731         for (i = 0; i < sc->sc_nmac; ++i) {
1732                 struct bwi_regwin *old_rw;
1733
1734                 mac = &sc->sc_mac[i];
1735                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1736                         continue;
1737
1738                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1739                 if (error)
1740                         continue;
1741
1742                 bwi_mac_shutdown(mac);
1743                 pwr_off = 1;
1744
1745                 bwi_regwin_switch(sc, old_rw, NULL);
1746         }
1747
1748         if (pwr_off)
1749                 bwi_bbp_power_off(sc);
1750
1751         sc->sc_tx_timer = 0;
1752         ifp->if_timer = 0;
1753         ifp->if_flags &= ~IFF_RUNNING;
1754         ifq_clr_oactive(&ifp->if_snd);
1755         return 0;
1756 }
1757
1758 static void
1759 bwi_intr(void *xsc)
1760 {
1761         struct bwi_softc *sc = xsc;
1762         struct bwi_mac *mac;
1763         struct ifnet *ifp = &sc->sc_ic.ic_if;
1764         uint32_t intr_status;
1765         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1766         int i, txrx_error, tx = 0, rx_data = -1;
1767
1768         ASSERT_SERIALIZED(ifp->if_serializer);
1769
1770         if ((ifp->if_flags & IFF_RUNNING) == 0)
1771                 return;
1772
1773         /*
1774          * Get interrupt status
1775          */
1776         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1777         if (intr_status == 0xffffffff)  /* Not for us */
1778                 return;
1779
1780         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1781
1782         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1783         if (intr_status == 0)           /* Nothing is interesting */
1784                 return;
1785
1786         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1787         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1788
1789         txrx_error = 0;
1790         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1791         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1792                 uint32_t mask;
1793
1794                 if (BWI_TXRX_IS_RX(i))
1795                         mask = BWI_TXRX_RX_INTRS;
1796                 else
1797                         mask = BWI_TXRX_TX_INTRS;
1798
1799                 txrx_intr_status[i] =
1800                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1801
1802                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1803                          i, txrx_intr_status[i]);
1804
1805                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1806                         if_printf(ifp, "intr fatal TX/RX (%d) error 0x%08x\n",
1807                                   i, txrx_intr_status[i]);
1808                         txrx_error = 1;
1809                 }
1810         }
1811         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1812
1813         /*
1814          * Acknowledge interrupt
1815          */
1816         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1817
1818         for (i = 0; i < BWI_TXRX_NRING; ++i)
1819                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1820
1821         /* Disable all interrupts */
1822         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1823
1824         if (intr_status & BWI_INTR_PHY_TXERR) {
1825                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1826                         if_printf(ifp, "intr PHY TX error\n");
1827                         /* XXX to netisr0? */
1828                         bwi_init_statechg(sc, 0);
1829                         return;
1830                 }
1831         }
1832
1833         if (txrx_error) {
1834                 /* TODO: reset device */
1835         }
1836
1837         if (intr_status & BWI_INTR_TBTT)
1838                 bwi_mac_config_ps(mac);
1839
1840         if (intr_status & BWI_INTR_EO_ATIM)
1841                 if_printf(ifp, "EO_ATIM\n");
1842
1843         if (intr_status & BWI_INTR_PMQ) {
1844                 for (;;) {
1845                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1846                                 break;
1847                 }
1848                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1849         }
1850
1851         if (intr_status & BWI_INTR_NOISE)
1852                 if_printf(ifp, "intr noise\n");
1853
1854         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX)
1855                 rx_data = sc->sc_rxeof(sc);
1856
1857         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1858                 sc->sc_txeof_status(sc);
1859                 tx = 1;
1860         }
1861
1862         if (intr_status & BWI_INTR_TX_DONE) {
1863                 bwi_txeof(sc);
1864                 tx = 1;
1865         }
1866
1867         /* Re-enable interrupts */
1868         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1869
1870         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1871                 int evt = BWI_LED_EVENT_NONE;
1872
1873                 if (tx && rx_data > 0) {
1874                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1875                                 evt = BWI_LED_EVENT_RX;
1876                         else
1877                                 evt = BWI_LED_EVENT_TX;
1878                 } else if (tx) {
1879                         evt = BWI_LED_EVENT_TX;
1880                 } else if (rx_data > 0) {
1881                         evt = BWI_LED_EVENT_RX;
1882                 } else if (rx_data == 0) {
1883                         evt = BWI_LED_EVENT_POLL;
1884                 }
1885
1886                 if (evt != BWI_LED_EVENT_NONE)
1887                         bwi_led_event(sc, evt);
1888         }
1889 }
1890
1891 static void
1892 bwi_newstate_begin(struct bwi_softc *sc, enum ieee80211_state nstate)
1893 {
1894         callout_stop(&sc->sc_scan_ch);
1895         callout_stop(&sc->sc_calib_ch);
1896
1897         ieee80211_ratectl_newstate(&sc->sc_ic, nstate);
1898         bwi_led_newstate(sc, nstate);
1899
1900         if (nstate == IEEE80211_S_INIT)
1901                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1902 }
1903
1904 static int
1905 bwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1906 {
1907         struct bwi_softc *sc = ic->ic_if.if_softc;
1908         struct ifnet *ifp = &ic->ic_if;
1909         int error;
1910
1911         ASSERT_SERIALIZED(ifp->if_serializer);
1912
1913         bwi_newstate_begin(sc, nstate);
1914
1915         if (nstate == IEEE80211_S_INIT)
1916                 goto back;
1917
1918         error = bwi_set_chan(sc, ic->ic_curchan);
1919         if (error) {
1920                 if_printf(ifp, "can't set channel to %u\n",
1921                           ieee80211_chan2ieee(ic, ic->ic_curchan));
1922                 return error;
1923         }
1924
1925         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1926                 /* Nothing to do */
1927         } else if (nstate == IEEE80211_S_RUN) {
1928                 struct bwi_mac *mac;
1929
1930                 bwi_set_bssid(sc, ic->ic_bss->ni_bssid);
1931
1932                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1933                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1934
1935                 /* Initial TX power calibration */
1936                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1937 #ifdef notyet
1938                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1939 #else
1940                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1941 #endif
1942         } else {
1943                 bwi_set_bssid(sc, bwi_zero_addr);
1944         }
1945
1946 back:
1947         error = sc->sc_newstate(ic, nstate, arg);
1948
1949         if (nstate == IEEE80211_S_SCAN) {
1950                 callout_reset(&sc->sc_scan_ch,
1951                               (sc->sc_dwell_time * hz) / 1000,
1952                               bwi_next_scan, sc);
1953         } else if (nstate == IEEE80211_S_RUN) {
1954                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1955         }
1956         return error;
1957 }
1958
1959 static int
1960 bwi_media_change(struct ifnet *ifp)
1961 {
1962         int error;
1963
1964         ASSERT_SERIALIZED(ifp->if_serializer);
1965
1966         error = ieee80211_media_change(ifp);
1967         if (error != ENETRESET)
1968                 return error;
1969
1970         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
1971                 bwi_init(ifp->if_softc);
1972         return 0;
1973 }
1974
1975 static int
1976 bwi_dma_alloc(struct bwi_softc *sc)
1977 {
1978         int error, i, has_txstats;
1979         bus_addr_t lowaddr = 0;
1980         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1981         uint32_t txrx_ctrl_step = 0;
1982
1983         has_txstats = 0;
1984         for (i = 0; i < sc->sc_nmac; ++i) {
1985                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1986                         has_txstats = 1;
1987                         break;
1988                 }
1989         }
1990
1991         switch (sc->sc_bus_space) {
1992         case BWI_BUS_SPACE_30BIT:
1993         case BWI_BUS_SPACE_32BIT:
1994                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1995                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1996                 else
1997                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1998                 desc_sz = sizeof(struct bwi_desc32);
1999                 txrx_ctrl_step = 0x20;
2000
2001                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
2002                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
2003                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
2004                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
2005                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
2006                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
2007                 sc->sc_rxeof = bwi_rxeof32;
2008                 sc->sc_start_tx = bwi_start_tx32;
2009                 if (has_txstats) {
2010                         sc->sc_init_txstats = bwi_init_txstats32;
2011                         sc->sc_free_txstats = bwi_free_txstats32;
2012                         sc->sc_txeof_status = bwi_txeof_status32;
2013                 }
2014                 break;
2015
2016         case BWI_BUS_SPACE_64BIT:
2017                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
2018                 desc_sz = sizeof(struct bwi_desc64);
2019                 txrx_ctrl_step = 0x40;
2020
2021                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
2022                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
2023                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
2024                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
2025                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
2026                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
2027                 sc->sc_rxeof = bwi_rxeof64;
2028                 sc->sc_start_tx = bwi_start_tx64;
2029                 if (has_txstats) {
2030                         sc->sc_init_txstats = bwi_init_txstats64;
2031                         sc->sc_free_txstats = bwi_free_txstats64;
2032                         sc->sc_txeof_status = bwi_txeof_status64;
2033                 }
2034                 break;
2035         }
2036
2037         KKASSERT(lowaddr != 0);
2038         KKASSERT(desc_sz != 0);
2039         KKASSERT(txrx_ctrl_step != 0);
2040
2041         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
2042         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
2043
2044         /*
2045          * Create top level DMA tag
2046          */
2047         error = bus_dma_tag_create(NULL, BWI_ALIGN, 0,
2048                                    lowaddr, BUS_SPACE_MAXADDR,
2049                                    NULL, NULL,
2050                                    MAXBSIZE,
2051                                    BUS_SPACE_UNRESTRICTED,
2052                                    BUS_SPACE_MAXSIZE_32BIT,
2053                                    0, &sc->sc_parent_dtag);
2054         if (error) {
2055                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
2056                 return error;
2057         }
2058
2059 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
2060
2061         /*
2062          * Create TX ring DMA stuffs
2063          */
2064         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2065                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2066                                    NULL, NULL,
2067                                    tx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2068                                    0, &sc->sc_txring_dtag);
2069         if (error) {
2070                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
2071                 return error;
2072         }
2073
2074         for (i = 0; i < BWI_TX_NRING; ++i) {
2075                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
2076                                            &sc->sc_tx_rdata[i], tx_ring_sz,
2077                                            TXRX_CTRL(i));
2078                 if (error) {
2079                         device_printf(sc->sc_dev, "%dth TX ring "
2080                                       "DMA alloc failed\n", i);
2081                         return error;
2082                 }
2083         }
2084
2085         /*
2086          * Create RX ring DMA stuffs
2087          */
2088         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2089                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2090                                    NULL, NULL,
2091                                    rx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2092                                    0, &sc->sc_rxring_dtag);
2093         if (error) {
2094                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
2095                 return error;
2096         }
2097
2098         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
2099                                    rx_ring_sz, TXRX_CTRL(0));
2100         if (error) {
2101                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
2102                 return error;
2103         }
2104
2105         if (has_txstats) {
2106                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
2107                 if (error) {
2108                         device_printf(sc->sc_dev,
2109                                       "TX stats DMA alloc failed\n");
2110                         return error;
2111                 }
2112         }
2113
2114 #undef TXRX_CTRL
2115
2116         return bwi_dma_mbuf_create(sc);
2117 }
2118
2119 static void
2120 bwi_dma_free(struct bwi_softc *sc)
2121 {
2122         if (sc->sc_txring_dtag != NULL) {
2123                 int i;
2124
2125                 for (i = 0; i < BWI_TX_NRING; ++i) {
2126                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2127
2128                         if (rd->rdata_desc != NULL) {
2129                                 bus_dmamap_unload(sc->sc_txring_dtag,
2130                                                   rd->rdata_dmap);
2131                                 bus_dmamem_free(sc->sc_txring_dtag,
2132                                                 rd->rdata_desc,
2133                                                 rd->rdata_dmap);
2134                         }
2135                 }
2136                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2137         }
2138
2139         if (sc->sc_rxring_dtag != NULL) {
2140                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2141
2142                 if (rd->rdata_desc != NULL) {
2143                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2144                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2145                                         rd->rdata_dmap);
2146                 }
2147                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2148         }
2149
2150         bwi_dma_txstats_free(sc);
2151         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2152
2153         if (sc->sc_parent_dtag != NULL)
2154                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2155 }
2156
2157 static int
2158 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2159                    struct bwi_ring_data *rd, bus_size_t size,
2160                    uint32_t txrx_ctrl)
2161 {
2162         int error;
2163
2164         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2165                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2166                                  &rd->rdata_dmap);
2167         if (error) {
2168                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2169                 return error;
2170         }
2171
2172         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2173                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2174                                 BUS_DMA_WAITOK);
2175         if (error) {
2176                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2177                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2178                 rd->rdata_desc = NULL;
2179                 return error;
2180         }
2181
2182         rd->rdata_txrx_ctrl = txrx_ctrl;
2183         return 0;
2184 }
2185
2186 static int
2187 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2188                       bus_size_t desc_sz)
2189 {
2190         struct bwi_txstats_data *st;
2191         bus_size_t dma_size;
2192         int error;
2193
2194         st = kmalloc(sizeof(*st), M_DEVBUF, M_WAITOK | M_ZERO);
2195         sc->sc_txstats = st;
2196
2197         /*
2198          * Create TX stats descriptor DMA stuffs
2199          */
2200         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2201
2202         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2203                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2204                                    NULL, NULL,
2205                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2206                                    0, &st->stats_ring_dtag);
2207         if (error) {
2208                 device_printf(sc->sc_dev, "can't create txstats ring "
2209                               "DMA tag\n");
2210                 return error;
2211         }
2212
2213         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2214                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2215                                  &st->stats_ring_dmap);
2216         if (error) {
2217                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2218                               "DMA mem\n");
2219                 bus_dma_tag_destroy(st->stats_ring_dtag);
2220                 st->stats_ring_dtag = NULL;
2221                 return error;
2222         }
2223
2224         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2225                                 st->stats_ring, dma_size,
2226                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2227                                 BUS_DMA_WAITOK);
2228         if (error) {
2229                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2230                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2231                                 st->stats_ring_dmap);
2232                 bus_dma_tag_destroy(st->stats_ring_dtag);
2233                 st->stats_ring_dtag = NULL;
2234                 return error;
2235         }
2236
2237         /*
2238          * Create TX stats DMA stuffs
2239          */
2240         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2241                            BWI_ALIGN);
2242
2243         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_ALIGN, 0,
2244                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2245                                    NULL, NULL,
2246                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2247                                    0, &st->stats_dtag);
2248         if (error) {
2249                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2250                 return error;
2251         }
2252
2253         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2254                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2255                                  &st->stats_dmap);
2256         if (error) {
2257                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2258                 bus_dma_tag_destroy(st->stats_dtag);
2259                 st->stats_dtag = NULL;
2260                 return error;
2261         }
2262
2263         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2264                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2265                                 BUS_DMA_WAITOK);
2266         if (error) {
2267                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2268                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2269                 bus_dma_tag_destroy(st->stats_dtag);
2270                 st->stats_dtag = NULL;
2271                 return error;
2272         }
2273
2274         st->stats_ctrl_base = ctrl_base;
2275         return 0;
2276 }
2277
2278 static void
2279 bwi_dma_txstats_free(struct bwi_softc *sc)
2280 {
2281         struct bwi_txstats_data *st;
2282
2283         if (sc->sc_txstats == NULL)
2284                 return;
2285         st = sc->sc_txstats;
2286
2287         if (st->stats_ring_dtag != NULL) {
2288                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2289                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2290                                 st->stats_ring_dmap);
2291                 bus_dma_tag_destroy(st->stats_ring_dtag);
2292         }
2293
2294         if (st->stats_dtag != NULL) {
2295                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2296                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2297                 bus_dma_tag_destroy(st->stats_dtag);
2298         }
2299
2300         kfree(st, M_DEVBUF);
2301 }
2302
2303 static void
2304 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2305 {
2306         KASSERT(nseg == 1, ("too many segments"));
2307         *((bus_addr_t *)arg) = seg->ds_addr;
2308 }
2309
2310 static int
2311 bwi_dma_mbuf_create(struct bwi_softc *sc)
2312 {
2313         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2314         int i, j, k, ntx, error;
2315
2316         /*
2317          * Create TX/RX mbuf DMA tag
2318          */
2319         error = bus_dma_tag_create(sc->sc_parent_dtag, 1, 0,
2320                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2321                                    NULL, NULL, MCLBYTES, 1,
2322                                    BUS_SPACE_MAXSIZE_32BIT,
2323                                    0, &sc->sc_buf_dtag);
2324         if (error) {
2325                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2326                 return error;
2327         }
2328
2329         ntx = 0;
2330
2331         /*
2332          * Create TX mbuf DMA map
2333          */
2334         for (i = 0; i < BWI_TX_NRING; ++i) {
2335                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2336
2337                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2338                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2339                                                   &tbd->tbd_buf[j].tb_dmap);
2340                         if (error) {
2341                                 device_printf(sc->sc_dev, "can't create "
2342                                               "%dth tbd, %dth DMA map\n", i, j);
2343
2344                                 ntx = i;
2345                                 for (k = 0; k < j; ++k) {
2346                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2347                                                 tbd->tbd_buf[k].tb_dmap);
2348                                 }
2349                                 goto fail;
2350                         }
2351                 }
2352         }
2353         ntx = BWI_TX_NRING;
2354
2355         /*
2356          * Create RX mbuf DMA map and a spare DMA map
2357          */
2358         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2359                                   &rbd->rbd_tmp_dmap);
2360         if (error) {
2361                 device_printf(sc->sc_dev,
2362                               "can't create spare RX buf DMA map\n");
2363                 goto fail;
2364         }
2365
2366         for (j = 0; j < BWI_RX_NDESC; ++j) {
2367                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2368                                           &rbd->rbd_buf[j].rb_dmap);
2369                 if (error) {
2370                         device_printf(sc->sc_dev, "can't create %dth "
2371                                       "RX buf DMA map\n", j);
2372
2373                         for (k = 0; k < j; ++k) {
2374                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2375                                         rbd->rbd_buf[j].rb_dmap);
2376                         }
2377                         bus_dmamap_destroy(sc->sc_buf_dtag,
2378                                            rbd->rbd_tmp_dmap);
2379                         goto fail;
2380                 }
2381         }
2382
2383         return 0;
2384 fail:
2385         bwi_dma_mbuf_destroy(sc, ntx, 0);
2386         return error;
2387 }
2388
2389 static void
2390 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2391 {
2392         int i, j;
2393
2394         if (sc->sc_buf_dtag == NULL)
2395                 return;
2396
2397         for (i = 0; i < ntx; ++i) {
2398                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2399
2400                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2401                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2402
2403                         if (tb->tb_mbuf != NULL) {
2404                                 bus_dmamap_unload(sc->sc_buf_dtag,
2405                                                   tb->tb_dmap);
2406                                 m_freem(tb->tb_mbuf);
2407                         }
2408                         if (tb->tb_ni != NULL)
2409                                 ieee80211_free_node(tb->tb_ni);
2410                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2411                 }
2412         }
2413
2414         if (nrx) {
2415                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2416
2417                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2418                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2419                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2420
2421                         if (rb->rb_mbuf != NULL) {
2422                                 bus_dmamap_unload(sc->sc_buf_dtag,
2423                                                   rb->rb_dmap);
2424                                 m_freem(rb->rb_mbuf);
2425                         }
2426                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2427                 }
2428         }
2429
2430         bus_dma_tag_destroy(sc->sc_buf_dtag);
2431         sc->sc_buf_dtag = NULL;
2432 }
2433
2434 static void
2435 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2436 {
2437         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2438 }
2439
2440 static void
2441 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2442 {
2443         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2444 }
2445
2446 static int
2447 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2448 {
2449         struct bwi_ring_data *rd;
2450         struct bwi_txbuf_data *tbd;
2451         uint32_t val, addr_hi, addr_lo;
2452
2453         KKASSERT(ring_idx < BWI_TX_NRING);
2454         rd = &sc->sc_tx_rdata[ring_idx];
2455         tbd = &sc->sc_tx_bdata[ring_idx];
2456
2457         tbd->tbd_idx = 0;
2458         tbd->tbd_used = 0;
2459
2460         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2461         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2462                         BUS_DMASYNC_PREWRITE);
2463
2464         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2465         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2466
2467         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2468               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2469                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2470         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2471
2472         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2473               BWI_TXRX32_CTRL_ENABLE;
2474         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2475
2476         return 0;
2477 }
2478
2479 static void
2480 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2481                        bus_addr_t paddr, int hdr_size, int ndesc)
2482 {
2483         uint32_t val, addr_hi, addr_lo;
2484
2485         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2486         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2487
2488         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2489               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2490                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2491         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2492
2493         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2494               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2495               BWI_TXRX32_CTRL_ENABLE;
2496         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2497
2498         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2499                     (ndesc - 1) * sizeof(struct bwi_desc32));
2500 }
2501
2502 static int
2503 bwi_init_rx_ring32(struct bwi_softc *sc)
2504 {
2505         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2506         int i, error;
2507
2508         sc->sc_rx_bdata.rbd_idx = 0;
2509
2510         for (i = 0; i < BWI_RX_NDESC; ++i) {
2511                 error = bwi_newbuf(sc, i, 1);
2512                 if (error) {
2513                         if_printf(&sc->sc_ic.ic_if,
2514                                   "can't allocate %dth RX buffer\n", i);
2515                         return error;
2516                 }
2517         }
2518         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2519                         BUS_DMASYNC_PREWRITE);
2520
2521         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2522                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2523         return 0;
2524 }
2525
2526 static int
2527 bwi_init_txstats32(struct bwi_softc *sc)
2528 {
2529         struct bwi_txstats_data *st = sc->sc_txstats;
2530         bus_addr_t stats_paddr;
2531         int i;
2532
2533         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2534         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2535
2536         st->stats_idx = 0;
2537
2538         stats_paddr = st->stats_paddr;
2539         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2540                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2541                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2542                 stats_paddr += sizeof(struct bwi_txstats);
2543         }
2544         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2545                         BUS_DMASYNC_PREWRITE);
2546
2547         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2548                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2549         return 0;
2550 }
2551
2552 static void
2553 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2554                     int buf_len)
2555 {
2556         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2557
2558         KKASSERT(buf_idx < BWI_RX_NDESC);
2559         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2560                          paddr, buf_len, 0);
2561 }
2562
2563 static void
2564 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2565                     int buf_idx, bus_addr_t paddr, int buf_len)
2566 {
2567         KKASSERT(buf_idx < BWI_TX_NDESC);
2568         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2569                          paddr, buf_len, 1);
2570 }
2571
2572 static int
2573 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2574 {
2575         /* TODO:64 */
2576         return EOPNOTSUPP;
2577 }
2578
2579 static int
2580 bwi_init_rx_ring64(struct bwi_softc *sc)
2581 {
2582         /* TODO:64 */
2583         return EOPNOTSUPP;
2584 }
2585
2586 static int
2587 bwi_init_txstats64(struct bwi_softc *sc)
2588 {
2589         /* TODO:64 */
2590         return EOPNOTSUPP;
2591 }
2592
2593 static void
2594 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2595                     int buf_len)
2596 {
2597         /* TODO:64 */
2598 }
2599
2600 static void
2601 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2602                     int buf_idx, bus_addr_t paddr, int buf_len)
2603 {
2604         /* TODO:64 */
2605 }
2606
2607 static void
2608 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2609                  bus_size_t mapsz __unused, int error)
2610 {
2611         if (!error) {
2612                 KASSERT(nseg == 1, ("too many segments(%d)", nseg));
2613                 *((bus_addr_t *)arg) = seg->ds_addr;
2614         }
2615 }
2616
2617 static int
2618 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2619 {
2620         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2621         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2622         struct bwi_rxbuf_hdr *hdr;
2623         bus_dmamap_t map;
2624         bus_addr_t paddr;
2625         struct mbuf *m;
2626         int error;
2627
2628         KKASSERT(buf_idx < BWI_RX_NDESC);
2629
2630         m = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2631         if (m == NULL) {
2632                 error = ENOBUFS;
2633
2634                 /*
2635                  * If the NIC is up and running, we need to:
2636                  * - Clear RX buffer's header.
2637                  * - Restore RX descriptor settings.
2638                  */
2639                 if (init)
2640                         return error;
2641                 else
2642                         goto back;
2643         }
2644         m->m_len = m->m_pkthdr.len = MCLBYTES;
2645
2646         /*
2647          * Try to load RX buf into temporary DMA map
2648          */
2649         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2650                                      bwi_dma_buf_addr, &paddr,
2651                                      init ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2652         if (error) {
2653                 m_freem(m);
2654
2655                 /*
2656                  * See the comment above
2657                  */
2658                 if (init)
2659                         return error;
2660                 else
2661                         goto back;
2662         }
2663
2664         if (!init)
2665                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2666         rxbuf->rb_mbuf = m;
2667         rxbuf->rb_paddr = paddr;
2668
2669         /*
2670          * Swap RX buf's DMA map with the loaded temporary one
2671          */
2672         map = rxbuf->rb_dmap;
2673         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2674         rbd->rbd_tmp_dmap = map;
2675
2676 back:
2677         /*
2678          * Clear RX buf header
2679          */
2680         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2681         bzero(hdr, sizeof(*hdr));
2682         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2683
2684         /*
2685          * Setup RX buf descriptor
2686          */
2687         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2688                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2689         return error;
2690 }
2691
2692 static void
2693 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2694                     const uint8_t *addr)
2695 {
2696         int i;
2697
2698         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2699                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2700
2701         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2702                 uint16_t addr_val;
2703
2704                 addr_val = (uint16_t)addr[i * 2] |
2705                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2706                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2707         }
2708 }
2709
2710 static int
2711 bwi_set_chan(struct bwi_softc *sc, struct ieee80211_channel *c)
2712 {
2713         struct ieee80211com *ic = &sc->sc_ic;
2714 #ifdef INVARIANTS
2715         struct ifnet *ifp = &ic->ic_if;
2716 #endif
2717         struct bwi_mac *mac;
2718         uint16_t flags;
2719         u_int chan;
2720
2721         ASSERT_SERIALIZED(ifp->if_serializer);
2722
2723         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
2724         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2725
2726         chan = ieee80211_chan2ieee(ic, c);
2727
2728         bwi_rf_set_chan(mac, chan, 0);
2729
2730         /*
2731          * Setup radio tap channel freq and flags
2732          */
2733         if (IEEE80211_IS_CHAN_G(c))
2734                 flags = IEEE80211_CHAN_G;
2735         else
2736                 flags = IEEE80211_CHAN_B;
2737
2738         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
2739                 htole16(c->ic_freq);
2740         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
2741                 htole16(flags);
2742
2743         return 0;
2744 }
2745
2746 static void
2747 bwi_next_scan(void *xsc)
2748 {
2749         struct bwi_softc *sc = xsc;
2750         struct ieee80211com *ic = &sc->sc_ic;
2751         struct ifnet *ifp = &ic->ic_if;
2752
2753         lwkt_serialize_enter(ifp->if_serializer);
2754
2755         if (ic->ic_state == IEEE80211_S_SCAN)
2756                 ieee80211_next_scan(ic);
2757
2758         lwkt_serialize_exit(ifp->if_serializer);
2759 }
2760
2761 static int
2762 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2763 {
2764         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2765         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2766         struct ieee80211com *ic = &sc->sc_ic;
2767         struct ifnet *ifp = &ic->ic_if;
2768         int idx, rx_data = 0;
2769
2770         idx = rbd->rbd_idx;
2771         while (idx != end_idx) {
2772                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2773                 struct bwi_rxbuf_hdr *hdr;
2774                 struct ieee80211_frame_min *wh;
2775                 struct ieee80211_node *ni;
2776                 struct mbuf *m;
2777                 const void *plcp;
2778                 uint16_t flags2;
2779                 int buflen, wh_ofs, hdr_extra, rssi, type, rate;
2780
2781                 m = rb->rb_mbuf;
2782                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2783                                 BUS_DMASYNC_POSTREAD);
2784
2785                 if (bwi_newbuf(sc, idx, 0)) {
2786                         IFNET_STAT_INC(ifp, ierrors, 1);
2787                         goto next;
2788                 }
2789
2790                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2791                 flags2 = le16toh(hdr->rxh_flags2);
2792
2793                 hdr_extra = 0;
2794                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2795                         hdr_extra = 2;
2796                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2797
2798                 buflen = le16toh(hdr->rxh_buflen);
2799                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2800                         if_printf(ifp, "short frame %d, hdr_extra %d\n",
2801                                   buflen, hdr_extra);
2802                         IFNET_STAT_INC(ifp, ierrors, 1);
2803                         m_freem(m);
2804                         goto next;
2805                 }
2806
2807                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2808                 rssi = bwi_calc_rssi(sc, hdr);
2809
2810                 m->m_pkthdr.rcvif = ifp;
2811                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2812                 m_adj(m, sizeof(*hdr) + wh_ofs);
2813
2814                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2815                         rate = bwi_ofdm_plcp2rate(plcp);
2816                 else
2817                         rate = bwi_ds_plcp2rate(plcp);
2818
2819                 /* RX radio tap */
2820                 if (sc->sc_drvbpf != NULL)
2821                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi);
2822
2823                 m_adj(m, -IEEE80211_CRC_LEN);
2824
2825                 wh = mtod(m, struct ieee80211_frame_min *);
2826                 ni = ieee80211_find_rxnode(ic, wh);
2827
2828                 type = ieee80211_input(ic, m, ni, rssi - BWI_NOISE_FLOOR,
2829                                        le16toh(hdr->rxh_tsf));
2830                 ieee80211_free_node(ni);
2831
2832                 if (type == IEEE80211_FC0_TYPE_DATA) {
2833                         rx_data = 1;
2834                         sc->sc_rx_rate = rate;
2835                 }
2836 next:
2837                 idx = (idx + 1) % BWI_RX_NDESC;
2838         }
2839
2840         rbd->rbd_idx = idx;
2841         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2842                         BUS_DMASYNC_PREWRITE);
2843         return rx_data;
2844 }
2845
2846 static int
2847 bwi_rxeof32(struct bwi_softc *sc)
2848 {
2849         uint32_t val, rx_ctrl;
2850         int end_idx, rx_data;
2851
2852         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2853
2854         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2855         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2856                   sizeof(struct bwi_desc32);
2857
2858         rx_data = bwi_rxeof(sc, end_idx);
2859
2860         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2861                     end_idx * sizeof(struct bwi_desc32));
2862
2863         return rx_data;
2864 }
2865
2866 static int
2867 bwi_rxeof64(struct bwi_softc *sc)
2868 {
2869         /* TODO:64 */
2870         return 0;
2871 }
2872
2873 static void
2874 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2875 {
2876         int i;
2877
2878         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2879
2880 #define NRETRY 10
2881
2882         for (i = 0; i < NRETRY; ++i) {
2883                 uint32_t status;
2884
2885                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2886                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2887                     BWI_RX32_STATUS_STATE_DISABLED)
2888                         break;
2889
2890                 DELAY(1000);
2891         }
2892         if (i == NRETRY)
2893                 if_printf(&sc->sc_ic.ic_if, "reset rx ring timedout\n");
2894
2895 #undef NRETRY
2896
2897         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2898 }
2899
2900 static void
2901 bwi_free_txstats32(struct bwi_softc *sc)
2902 {
2903         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2904 }
2905
2906 static void
2907 bwi_free_rx_ring32(struct bwi_softc *sc)
2908 {
2909         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2910         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2911         int i;
2912
2913         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2914
2915         for (i = 0; i < BWI_RX_NDESC; ++i) {
2916                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2917
2918                 if (rb->rb_mbuf != NULL) {
2919                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2920                         m_freem(rb->rb_mbuf);
2921                         rb->rb_mbuf = NULL;
2922                 }
2923         }
2924 }
2925
2926 static void
2927 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2928 {
2929         struct bwi_ring_data *rd;
2930         struct bwi_txbuf_data *tbd;
2931         struct ifnet *ifp = &sc->sc_ic.ic_if;
2932         uint32_t state, val;
2933         int i;
2934
2935         KKASSERT(ring_idx < BWI_TX_NRING);
2936         rd = &sc->sc_tx_rdata[ring_idx];
2937         tbd = &sc->sc_tx_bdata[ring_idx];
2938
2939 #define NRETRY 10
2940
2941         for (i = 0; i < NRETRY; ++i) {
2942                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2943                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2944                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2945                     state == BWI_TX32_STATUS_STATE_IDLE ||
2946                     state == BWI_TX32_STATUS_STATE_STOPPED)
2947                         break;
2948
2949                 DELAY(1000);
2950         }
2951         if (i == NRETRY) {
2952                 if_printf(ifp, "wait for TX ring(%d) stable timed out\n",
2953                           ring_idx);
2954         }
2955
2956         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2957         for (i = 0; i < NRETRY; ++i) {
2958                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2959                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2960                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2961                         break;
2962
2963                 DELAY(1000);
2964         }
2965         if (i == NRETRY)
2966                 if_printf(ifp, "reset TX ring (%d) timed out\n", ring_idx);
2967
2968 #undef NRETRY
2969
2970         DELAY(1000);
2971
2972         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2973
2974         for (i = 0; i < BWI_TX_NDESC; ++i) {
2975                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2976
2977                 if (tb->tb_mbuf != NULL) {
2978                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2979                         m_freem(tb->tb_mbuf);
2980                         tb->tb_mbuf = NULL;
2981                 }
2982                 if (tb->tb_ni != NULL) {
2983                         ieee80211_free_node(tb->tb_ni);
2984                         tb->tb_ni = NULL;
2985                 }
2986         }
2987 }
2988
2989 static void
2990 bwi_free_txstats64(struct bwi_softc *sc)
2991 {
2992         /* TODO:64 */
2993 }
2994
2995 static void
2996 bwi_free_rx_ring64(struct bwi_softc *sc)
2997 {
2998         /* TODO:64 */
2999 }
3000
3001 static void
3002 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
3003 {
3004         /* TODO:64 */
3005 }
3006
3007 static int
3008 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
3009           struct ieee80211_node **ni0, int mgt_pkt)
3010 {
3011         struct ieee80211com *ic = &sc->sc_ic;
3012         struct ieee80211_node *ni = *ni0;
3013         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3014         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3015         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3016         struct bwi_mac *mac;
3017         struct bwi_txbuf_hdr *hdr;
3018         struct ieee80211_frame *wh;
3019         uint8_t rate, rate_fb;
3020         uint32_t mac_ctrl;
3021         uint16_t phy_ctrl;
3022         bus_addr_t paddr;
3023         int pkt_len, error, mcast_pkt = 0;
3024 #if 0
3025         const uint8_t *p;
3026         int i;
3027 #endif
3028
3029         KKASSERT(ni != NULL);
3030         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3031         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3032
3033         wh = mtod(m, struct ieee80211_frame *);
3034
3035         /* Get 802.11 frame len before prepending TX header */
3036         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3037
3038         /*
3039          * Find TX rate
3040          */
3041         bzero(tb->tb_rateidx, sizeof(tb->tb_rateidx));
3042         if (!mgt_pkt) {
3043                 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
3044                         int idx;
3045
3046                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3047                                         ic->ic_fixed_rate);
3048
3049                         if (ic->ic_fixed_rate >= 1)
3050                                 idx = ic->ic_fixed_rate - 1;
3051                         else
3052                                 idx = 0;
3053                         rate_fb = IEEE80211_RS_RATE(&ni->ni_rates, idx);
3054                 } else {
3055                         tb->tb_rateidx_cnt = ieee80211_ratectl_findrate(ni,
3056                                 m->m_pkthdr.len, tb->tb_rateidx, BWI_NTXRATE);
3057
3058                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3059                                                  tb->tb_rateidx[0]);
3060                         if (tb->tb_rateidx_cnt == BWI_NTXRATE) {
3061                                 rate_fb = IEEE80211_RS_RATE(&ni->ni_rates,
3062                                                             tb->tb_rateidx[1]);
3063                         } else {
3064                                 rate_fb = rate;
3065                         }
3066                         tb->tb_buflen = m->m_pkthdr.len;
3067                 }
3068         } else {
3069                 /* Fixed at 1Mbits/s for mgt frames */
3070                 rate = rate_fb = (1 * 2);
3071         }
3072
3073         if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
3074                 rate = rate_fb = ic->ic_mcast_rate;
3075                 mcast_pkt = 1;
3076         }
3077
3078         if (rate == 0 || rate_fb == 0) {
3079                 /* XXX this should not happen */
3080                 if_printf(&ic->ic_if, "invalid rate %u or fallback rate %u",
3081                           rate, rate_fb);
3082                 rate = rate_fb = (1 * 2); /* Force 1Mbits/s */
3083         }
3084         sc->sc_tx_rate = rate;
3085
3086         /*
3087          * TX radio tap
3088          */
3089         if (sc->sc_drvbpf != NULL) {
3090                 sc->sc_tx_th.wt_flags = 0;
3091                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3092                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3093                 if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_DS &&
3094                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3095                     rate != (1 * 2)) {
3096                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3097                 }
3098                 sc->sc_tx_th.wt_rate = rate;
3099
3100                 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_tx_th, sc->sc_tx_th_len);
3101         }
3102
3103         /*
3104          * Setup the embedded TX header
3105          */
3106         M_PREPEND(m, sizeof(*hdr), MB_DONTWAIT);
3107         if (m == NULL) {
3108                 if_printf(&ic->ic_if, "prepend TX header failed\n");
3109                 return ENOBUFS;
3110         }
3111         hdr = mtod(m, struct bwi_txbuf_hdr *);
3112
3113         bzero(hdr, sizeof(*hdr));
3114
3115         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3116         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3117
3118         if (!mcast_pkt) {
3119                 uint16_t dur;
3120                 uint8_t ack_rate;
3121
3122                 ack_rate = ieee80211_ack_rate(ni, rate_fb);
3123                 dur = ieee80211_txtime(ni,
3124                 sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN,
3125                 ack_rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
3126
3127                 hdr->txh_fb_duration = htole16(dur);
3128         }
3129
3130         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3131                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3132
3133         bwi_plcp_header(hdr->txh_plcp, pkt_len, rate);
3134         bwi_plcp_header(hdr->txh_fb_plcp, pkt_len, rate_fb);
3135
3136         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3137                              BWI_TXH_PHY_C_ANTMODE_MASK);
3138         if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_OFDM)
3139                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3140         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3141                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3142
3143         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3144         if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
3145                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3146         if (ieee80211_rate2modtype(rate_fb) == IEEE80211_MODTYPE_OFDM)
3147                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3148
3149         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3150         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3151
3152         /* Catch any further usage */
3153         hdr = NULL;
3154         wh = NULL;
3155
3156         /* DMA load */
3157         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3158                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3159         if (error && error != EFBIG) {
3160                 if_printf(&ic->ic_if, "can't load TX buffer (1) %d\n", error);
3161                 goto back;
3162         }
3163
3164         if (error) {    /* error == EFBIG */
3165                 struct mbuf *m_new;
3166
3167                 m_new = m_defrag(m, MB_DONTWAIT);
3168                 if (m_new == NULL) {
3169                         if_printf(&ic->ic_if, "can't defrag TX buffer\n");
3170                         error = ENOBUFS;
3171                         goto back;
3172                 } else {
3173                         m = m_new;
3174                 }
3175
3176                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3177                                              bwi_dma_buf_addr, &paddr,
3178                                              BUS_DMA_NOWAIT);
3179                 if (error) {
3180                         if_printf(&ic->ic_if, "can't load TX buffer (2) %d\n",
3181                                   error);
3182                         goto back;
3183                 }
3184         }
3185         error = 0;
3186
3187         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3188
3189         if (mgt_pkt || mcast_pkt) {
3190                 /* Don't involve mcast/mgt packets into TX rate control */
3191                 ieee80211_free_node(ni);
3192                 *ni0 = ni = NULL;
3193         }
3194         tb->tb_mbuf = m;
3195         tb->tb_ni = ni;
3196
3197 #if 0
3198         p = mtod(m, const uint8_t *);
3199         for (i = 0; i < m->m_pkthdr.len; ++i) {
3200                 if (i != 0 && i % 8 == 0)
3201                         kprintf("\n");
3202                 kprintf("%02x ", p[i]);
3203         }
3204         kprintf("\n");
3205 #endif
3206
3207         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3208                 idx, pkt_len, m->m_pkthdr.len);
3209
3210         /* Setup TX descriptor */
3211         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3212         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3213                         BUS_DMASYNC_PREWRITE);
3214
3215         /* Kick start */
3216         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3217
3218 back:
3219         if (error)
3220                 m_freem(m);
3221         return error;
3222 }
3223
3224 static void
3225 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3226 {
3227         idx = (idx + 1) % BWI_TX_NDESC;
3228         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3229                     idx * sizeof(struct bwi_desc32));
3230 }
3231
3232 static void
3233 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3234 {
3235         /* TODO:64 */
3236 }
3237
3238 static void
3239 bwi_txeof_status32(struct bwi_softc *sc)
3240 {
3241         struct ifnet *ifp = &sc->sc_ic.ic_if;
3242         uint32_t val, ctrl_base;
3243         int end_idx;
3244
3245         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3246
3247         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3248         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3249                   sizeof(struct bwi_desc32);
3250
3251         bwi_txeof_status(sc, end_idx);
3252
3253         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3254                     end_idx * sizeof(struct bwi_desc32));
3255
3256         if (!ifq_is_oactive(&ifp->if_snd))
3257                 ifp->if_start(ifp);
3258 }
3259
3260 static void
3261 bwi_txeof_status64(struct bwi_softc *sc)
3262 {
3263         /* TODO:64 */
3264 }
3265
3266 static void
3267 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3268 {
3269         struct ifnet *ifp = &sc->sc_ic.ic_if;
3270         struct bwi_txbuf_data *tbd;
3271         struct bwi_txbuf *tb;
3272         int ring_idx, buf_idx;
3273
3274         if (tx_id == 0) {
3275                 if_printf(ifp, "zero tx id\n");
3276                 return;
3277         }
3278
3279         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3280         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3281
3282         KKASSERT(ring_idx == BWI_TX_DATA_RING);
3283         KKASSERT(buf_idx < BWI_TX_NDESC);
3284
3285         tbd = &sc->sc_tx_bdata[ring_idx];
3286         KKASSERT(tbd->tbd_used > 0);
3287         tbd->tbd_used--;
3288
3289         tb = &tbd->tbd_buf[buf_idx];
3290
3291         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3292                 "acked %d, data_txcnt %d, ni %p\n",
3293                 buf_idx, acked, data_txcnt, tb->tb_ni);
3294
3295         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3296         m_freem(tb->tb_mbuf);
3297         tb->tb_mbuf = NULL;
3298
3299         if (tb->tb_ni != NULL) {
3300                 struct ieee80211_ratectl_res res[BWI_NTXRATE];
3301                 int res_len, retry;
3302
3303                 if (data_txcnt <= BWI_SHRETRY_FB || tb->tb_rateidx_cnt == 1) {
3304                         res_len = 1;
3305                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3306                         res[0].rc_res_tries = data_txcnt;
3307                 } else {
3308                         res_len = BWI_NTXRATE;
3309                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3310                         res[0].rc_res_tries = BWI_SHRETRY_FB;
3311                         res[1].rc_res_rateidx = tb->tb_rateidx[1];
3312                         res[1].rc_res_tries = data_txcnt - BWI_SHRETRY_FB;
3313                 }
3314
3315                 if (acked) {
3316                         IFNET_STAT_INC(ifp, opackets, 1);
3317                         retry = data_txcnt > 0 ? data_txcnt - 1 : 0;
3318                 } else {
3319                         IFNET_STAT_INC(ifp, oerrors, 1);
3320                         retry = data_txcnt;
3321                 }
3322
3323                 ieee80211_ratectl_tx_complete(tb->tb_ni, tb->tb_buflen,
3324                         res, res_len, retry, 0, !acked);
3325
3326                 ieee80211_free_node(tb->tb_ni);
3327                 tb->tb_ni = NULL;
3328         } else {
3329                 /* XXX mgt packet error */
3330                 IFNET_STAT_INC(ifp, opackets, 1);
3331         }
3332
3333         if (tbd->tbd_used == 0)
3334                 sc->sc_tx_timer = 0;
3335
3336         ifq_clr_oactive(&ifp->if_snd);
3337 }
3338
3339 static void
3340 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3341 {
3342         struct bwi_txstats_data *st = sc->sc_txstats;
3343         int idx;
3344
3345         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3346
3347         idx = st->stats_idx;
3348         while (idx != end_idx) {
3349                 const struct bwi_txstats *stats = &st->stats[idx];
3350
3351                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3352                         int data_txcnt;
3353
3354                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3355                                                 BWI_TXS_TXCNT_DATA);
3356                         _bwi_txeof(sc, le16toh(stats->txs_id),
3357                                    stats->txs_flags & BWI_TXS_F_ACKED,
3358                                    data_txcnt);
3359                 }
3360                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3361         }
3362         st->stats_idx = idx;
3363 }
3364
3365 static void
3366 bwi_txeof(struct bwi_softc *sc)
3367 {
3368         struct ifnet *ifp = &sc->sc_ic.ic_if;
3369
3370         for (;;) {
3371                 uint32_t tx_status0, tx_status1;
3372                 uint16_t tx_id;
3373                 int data_txcnt;
3374
3375                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3376                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3377                         break;
3378                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3379
3380                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3381                 data_txcnt = __SHIFTOUT(tx_status0,
3382                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3383
3384                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3385                         continue;
3386
3387                 _bwi_txeof(sc, tx_id, tx_status0 & BWI_TXSTATUS0_ACKED,
3388                            data_txcnt);
3389         }
3390
3391         if (!ifq_is_oactive(&ifp->if_snd))
3392                 ifp->if_start(ifp);
3393 }
3394
3395 static int
3396 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3397 {
3398         bwi_power_on(sc, 1);
3399         return bwi_set_clock_mode(sc, clk_mode);
3400 }
3401
3402 static void
3403 bwi_bbp_power_off(struct bwi_softc *sc)
3404 {
3405         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3406         bwi_power_off(sc, 1);
3407 }
3408
3409 static int
3410 bwi_get_pwron_delay(struct bwi_softc *sc)
3411 {
3412         struct bwi_regwin *com, *old;
3413         struct bwi_clock_freq freq;
3414         uint32_t val;
3415         int error;
3416
3417         com = &sc->sc_com_regwin;
3418         KKASSERT(BWI_REGWIN_EXIST(com));
3419
3420         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3421                 return 0;
3422
3423         error = bwi_regwin_switch(sc, com, &old);
3424         if (error)
3425                 return error;
3426
3427         bwi_get_clock_freq(sc, &freq);
3428
3429         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3430         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3431         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3432
3433         return bwi_regwin_switch(sc, old, NULL);
3434 }
3435
3436 static int
3437 bwi_bus_attach(struct bwi_softc *sc)
3438 {
3439         struct bwi_regwin *bus, *old;
3440         int error;
3441
3442         bus = &sc->sc_bus_regwin;
3443
3444         error = bwi_regwin_switch(sc, bus, &old);
3445         if (error)
3446                 return error;
3447
3448         if (!bwi_regwin_is_enabled(sc, bus))
3449                 bwi_regwin_enable(sc, bus, 0);
3450
3451         /* Disable interripts */
3452         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3453
3454         return bwi_regwin_switch(sc, old, NULL);
3455 }
3456
3457 static const char *
3458 bwi_regwin_name(const struct bwi_regwin *rw)
3459 {
3460         switch (rw->rw_type) {
3461         case BWI_REGWIN_T_COM:
3462                 return "COM";
3463         case BWI_REGWIN_T_BUSPCI:
3464                 return "PCI";
3465         case BWI_REGWIN_T_MAC:
3466                 return "MAC";
3467         case BWI_REGWIN_T_BUSPCIE:
3468                 return "PCIE";
3469         }
3470         panic("unknown regwin type 0x%04x", rw->rw_type);
3471         return NULL;
3472 }
3473
3474 static uint32_t
3475 bwi_regwin_disable_bits(struct bwi_softc *sc)
3476 {
3477         uint32_t busrev;
3478
3479         /* XXX cache this */
3480         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3481         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3482                 "bus rev %u\n", busrev);
3483
3484         if (busrev == BWI_BUSREV_0)
3485                 return BWI_STATE_LO_DISABLE1;
3486         else if (busrev == BWI_BUSREV_1)
3487                 return BWI_STATE_LO_DISABLE2;
3488         else
3489                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3490 }
3491
3492 int
3493 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3494 {
3495         uint32_t val, disable_bits;
3496
3497         disable_bits = bwi_regwin_disable_bits(sc);
3498         val = CSR_READ_4(sc, BWI_STATE_LO);
3499
3500         if ((val & (BWI_STATE_LO_CLOCK |
3501                     BWI_STATE_LO_RESET |
3502                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3503                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3504                         bwi_regwin_name(rw));
3505                 return 1;
3506         } else {
3507                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3508                         bwi_regwin_name(rw));
3509                 return 0;
3510         }
3511 }
3512
3513 void
3514 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3515 {
3516         uint32_t state_lo, disable_bits;
3517         int i;
3518
3519         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3520
3521         /*
3522          * If current regwin is in 'reset' state, it was already disabled.
3523          */
3524         if (state_lo & BWI_STATE_LO_RESET) {
3525                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3526                         "%s was already disabled\n", bwi_regwin_name(rw));
3527                 return;
3528         }
3529
3530         disable_bits = bwi_regwin_disable_bits(sc);
3531
3532         /*
3533          * Disable normal clock
3534          */
3535         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3536         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3537
3538         /*
3539          * Wait until normal clock is disabled
3540          */
3541 #define NRETRY  1000
3542         for (i = 0; i < NRETRY; ++i) {
3543                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3544                 if (state_lo & disable_bits)
3545                         break;
3546                 DELAY(10);
3547         }
3548         if (i == NRETRY) {
3549                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3550                               bwi_regwin_name(rw));
3551         }
3552
3553         for (i = 0; i < NRETRY; ++i) {
3554                 uint32_t state_hi;
3555
3556                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3557                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3558                         break;
3559                 DELAY(10);
3560         }
3561         if (i == NRETRY) {
3562                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3563                               bwi_regwin_name(rw));
3564         }
3565 #undef NRETRY
3566
3567         /*
3568          * Reset and disable regwin with gated clock
3569          */
3570         state_lo = BWI_STATE_LO_RESET | disable_bits |
3571                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3572                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3573         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3574
3575         /* Flush pending bus write */
3576         CSR_READ_4(sc, BWI_STATE_LO);
3577         DELAY(1);
3578
3579         /* Reset and disable regwin */
3580         state_lo = BWI_STATE_LO_RESET | disable_bits |
3581                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3582         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3583
3584         /* Flush pending bus write */
3585         CSR_READ_4(sc, BWI_STATE_LO);
3586         DELAY(1);
3587 }
3588
3589 void
3590 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3591 {
3592         uint32_t state_lo, state_hi, imstate;
3593
3594         bwi_regwin_disable(sc, rw, flags);
3595
3596         /* Reset regwin with gated clock */
3597         state_lo = BWI_STATE_LO_RESET |
3598                    BWI_STATE_LO_CLOCK |
3599                    BWI_STATE_LO_GATED_CLOCK |
3600                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3601         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3602
3603         /* Flush pending bus write */
3604         CSR_READ_4(sc, BWI_STATE_LO);
3605         DELAY(1);
3606
3607         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3608         if (state_hi & BWI_STATE_HI_SERROR)
3609                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3610
3611         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3612         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3613                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3614                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3615         }
3616
3617         /* Enable regwin with gated clock */
3618         state_lo = BWI_STATE_LO_CLOCK |
3619                    BWI_STATE_LO_GATED_CLOCK |
3620                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3621         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3622
3623         /* Flush pending bus write */
3624         CSR_READ_4(sc, BWI_STATE_LO);
3625         DELAY(1);
3626
3627         /* Enable regwin with normal clock */
3628         state_lo = BWI_STATE_LO_CLOCK |
3629                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3630         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3631
3632         /* Flush pending bus write */
3633         CSR_READ_4(sc, BWI_STATE_LO);
3634         DELAY(1);
3635 }
3636
3637 static void
3638 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3639 {
3640         struct ieee80211com *ic = &sc->sc_ic;
3641         struct bwi_mac *mac;
3642         struct bwi_myaddr_bssid buf;
3643         const uint8_t *p;
3644         uint32_t val;
3645         int n, i;
3646
3647         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3648         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3649
3650         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3651
3652         bcopy(ic->ic_myaddr, buf.myaddr, sizeof(buf.myaddr));
3653         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3654
3655         n = sizeof(buf) / sizeof(val);
3656         p = (const uint8_t *)&buf;
3657         for (i = 0; i < n; ++i) {
3658                 int j;
3659
3660                 val = 0;
3661                 for (j = 0; j < sizeof(val); ++j)
3662                         val |= ((uint32_t)(*p++)) << (j * 8);
3663
3664                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3665         }
3666 }
3667
3668 static void
3669 bwi_updateslot(struct ifnet *ifp)
3670 {
3671         struct bwi_softc *sc = ifp->if_softc;
3672         struct ieee80211com *ic = &sc->sc_ic;
3673         struct bwi_mac *mac;
3674
3675         if ((ifp->if_flags & IFF_RUNNING) == 0)
3676                 return;
3677
3678         ASSERT_SERIALIZED(ifp->if_serializer);
3679
3680         DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3681
3682         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3683         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3684
3685         bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3686 }
3687
3688 static void
3689 bwi_calibrate(void *xsc)
3690 {
3691         struct bwi_softc *sc = xsc;
3692         struct ieee80211com *ic = &sc->sc_ic;
3693         struct ifnet *ifp = &ic->ic_if;
3694
3695         lwkt_serialize_enter(ifp->if_serializer);
3696
3697         if (ic->ic_state == IEEE80211_S_RUN) {
3698                 struct bwi_mac *mac;
3699
3700                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3701                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3702
3703                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
3704                         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3705                         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3706                 }
3707
3708                 /* XXX 15 seconds */
3709                 callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3710         }
3711
3712         lwkt_serialize_exit(ifp->if_serializer);
3713 }
3714
3715 static int
3716 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3717 {
3718         struct bwi_mac *mac;
3719
3720         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3721         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3722
3723         return bwi_rf_calc_rssi(mac, hdr);
3724 }
3725
3726 static void
3727 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3728                 struct bwi_rxbuf_hdr *hdr, const void *plcp,
3729                 int rate, int rssi)
3730 {
3731         const struct ieee80211_frame_min *wh;
3732
3733         KKASSERT(sc->sc_drvbpf != NULL);
3734
3735         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3736         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3737                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3738
3739         wh = mtod(m, const struct ieee80211_frame_min *);
3740         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3741                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3742
3743         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3744         sc->sc_rx_th.wr_rate = rate;
3745         sc->sc_rx_th.wr_antsignal = rssi;
3746         sc->sc_rx_th.wr_antnoise = BWI_NOISE_FLOOR;
3747
3748         bpf_ptap(sc->sc_drvbpf, m, &sc->sc_rx_th, sc->sc_rx_th_len);
3749 }
3750
3751 static void
3752 bwi_led_attach(struct bwi_softc *sc)
3753 {
3754         const uint8_t *led_act = NULL;
3755         uint16_t gpio, val[BWI_LED_MAX];
3756         int i;
3757
3758         for (i = 0; i < NELEM(bwi_vendor_led_act); ++i) {
3759                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3760                         led_act = bwi_vendor_led_act[i].led_act;
3761                         break;
3762                 }
3763         }
3764         if (led_act == NULL)
3765                 led_act = bwi_default_led_act;
3766
3767         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3768         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3769         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3770
3771         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3772         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3773         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3774
3775         for (i = 0; i < BWI_LED_MAX; ++i) {
3776                 struct bwi_led *led = &sc->sc_leds[i];
3777
3778                 if (val[i] == 0xff) {
3779                         led->l_act = led_act[i];
3780                 } else {
3781                         if (val[i] & BWI_LED_ACT_LOW)
3782                                 led->l_flags |= BWI_LED_F_ACTLOW;
3783                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3784                 }
3785                 led->l_mask = (1 << i);
3786
3787                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3788                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3789                     led->l_act == BWI_LED_ACT_BLINK) {
3790                         led->l_flags |= BWI_LED_F_BLINK;
3791                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3792                                 led->l_flags |= BWI_LED_F_POLLABLE;
3793                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3794                                 led->l_flags |= BWI_LED_F_SLOW;
3795
3796                         if (sc->sc_blink_led == NULL) {
3797                                 sc->sc_blink_led = led;
3798                                 if (led->l_flags & BWI_LED_F_SLOW)
3799                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3800                         }
3801                 }
3802
3803                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3804                         "%dth led, act %d, lowact %d\n", i,
3805                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3806         }
3807         callout_init(&sc->sc_led_blink_ch);
3808 }
3809
3810 static __inline uint16_t
3811 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3812 {
3813         if (led->l_flags & BWI_LED_F_ACTLOW)
3814                 on = !on;
3815         if (on)
3816                 val |= led->l_mask;
3817         else
3818                 val &= ~led->l_mask;
3819         return val;
3820 }
3821
3822 static void
3823 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3824 {
3825         struct ieee80211com *ic = &sc->sc_ic;
3826         uint16_t val;
3827         int i;
3828
3829         if (nstate == IEEE80211_S_INIT) {
3830                 callout_stop(&sc->sc_led_blink_ch);
3831                 sc->sc_led_blinking = 0;
3832         }
3833
3834         if ((ic->ic_if.if_flags & IFF_RUNNING) == 0)
3835                 return;
3836
3837         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3838         for (i = 0; i < BWI_LED_MAX; ++i) {
3839                 struct bwi_led *led = &sc->sc_leds[i];
3840                 int on;
3841
3842                 if (led->l_act == BWI_LED_ACT_UNKN ||
3843                     led->l_act == BWI_LED_ACT_NULL)
3844                         continue;
3845
3846                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3847                     nstate != IEEE80211_S_INIT)
3848                         continue;
3849
3850                 switch (led->l_act) {
3851                 case BWI_LED_ACT_ON:            /* Always on */
3852                         on = 1;
3853                         break;
3854                 case BWI_LED_ACT_OFF:           /* Always off */
3855                 case BWI_LED_ACT_5GHZ:          /* TODO: 11A */
3856                         on = 0;
3857                         break;
3858                 default:
3859                         on = 1;
3860                         switch (nstate) {
3861                         case IEEE80211_S_INIT:
3862                                 on = 0;
3863                                 break;
3864                         case IEEE80211_S_RUN:
3865                                 if (led->l_act == BWI_LED_ACT_11G &&
3866                                     ic->ic_curmode != IEEE80211_MODE_11G)
3867                                         on = 0;
3868                                 break;
3869                         default:
3870                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3871                                         on = 0;
3872                                 break;
3873                         }
3874                         break;
3875                 }
3876
3877                 val = bwi_led_onoff(led, val, on);
3878         }
3879         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3880 }
3881
3882 static void
3883 bwi_led_event(struct bwi_softc *sc, int event)
3884 {
3885         struct bwi_led *led = sc->sc_blink_led;
3886         int rate;
3887
3888         if (event == BWI_LED_EVENT_POLL) {
3889                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3890                         return;
3891                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3892                         return;
3893         }
3894
3895         sc->sc_led_ticks = ticks;
3896         if (sc->sc_led_blinking)
3897                 return;
3898
3899         switch (event) {
3900         case BWI_LED_EVENT_RX:
3901                 rate = sc->sc_rx_rate;
3902                 break;
3903         case BWI_LED_EVENT_TX:
3904                 rate = sc->sc_tx_rate;
3905                 break;
3906         case BWI_LED_EVENT_POLL:
3907                 rate = 0;
3908                 break;
3909         default:
3910                 panic("unknown LED event %d", event);
3911                 break;
3912         }
3913         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3914                             bwi_led_duration[rate].off_dur);
3915 }
3916
3917 static void
3918 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
3919 {
3920         struct bwi_led *led = sc->sc_blink_led;
3921         uint16_t val;
3922
3923         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3924         val = bwi_led_onoff(led, val, 1);
3925         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3926
3927         if (led->l_flags & BWI_LED_F_SLOW) {
3928                 BWI_LED_SLOWDOWN(on_dur);
3929                 BWI_LED_SLOWDOWN(off_dur);
3930         }
3931
3932         sc->sc_led_blinking = 1;
3933         sc->sc_led_blink_offdur = off_dur;
3934
3935         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
3936 }
3937
3938 static void
3939 bwi_led_blink_next(void *xsc)
3940 {
3941         struct bwi_softc *sc = xsc;
3942         uint16_t val;
3943
3944         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3945         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
3946         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3947
3948         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
3949                       bwi_led_blink_end, sc);
3950 }
3951
3952 static void
3953 bwi_led_blink_end(void *xsc)
3954 {
3955         struct bwi_softc *sc = xsc;
3956
3957         sc->sc_led_blinking = 0;
3958 }
3959
3960 static void *
3961 bwi_ratectl_attach(struct ieee80211com *ic, u_int rc)
3962 {
3963         struct bwi_softc *sc = ic->ic_if.if_softc;
3964
3965         switch (rc) {
3966         case IEEE80211_RATECTL_ONOE:
3967                 return &sc->sc_onoe_param;
3968         case IEEE80211_RATECTL_NONE:
3969                 /* This could only happen during detaching */
3970                 return NULL;
3971         default:
3972                 panic("unknown rate control algo %u", rc);
3973                 return NULL;
3974         }
3975 }