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  * $DragonFly: src/sys/dev/netif/bwi/if_bwi.c,v 1.21 2008/05/14 11:59:19 sephe Exp $
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/bitops.h>
  39 #include <sys/endian.h>
  40 #include <sys/kernel.h>
  41 #include <sys/bus.h>
  42 #include <sys/interrupt.h>
  43 #include <sys/malloc.h>
  44 #include <sys/proc.h>
  45 #include <sys/rman.h>
  46 #include <sys/serialize.h>
  47 #include <sys/socket.h>
  48 #include <sys/sockio.h>
  49 #include <sys/sysctl.h>
  50
  51 #include <net/ethernet.h>
  52 #include <net/if.h>
  53 #include <net/bpf.h>
  54 #include <net/if_arp.h>
  55 #include <net/if_dl.h>
  56 #include <net/if_media.h>
  57 #include <net/ifq_var.h>
  58
  59 #include <netproto/802_11/ieee80211_radiotap.h>
  60 #include <netproto/802_11/ieee80211_var.h>
  61 #include <netproto/802_11/wlan_ratectl/onoe/ieee80211_onoe_param.h>
  62
  63 #include <bus/pci/pcireg.h>
  64 #include <bus/pci/pcivar.h>
  65 #include <bus/pci/pcidevs.h>
  66
  67 #include <dev/netif/bwi/if_bwireg.h>
  68 #include <dev/netif/bwi/if_bwivar.h>
  69 #include <dev/netif/bwi/bwimac.h>
  70 #include <dev/netif/bwi/bwirf.h>
  71
  72 struct bwi_clock_freq {
  73         u_int           clkfreq_min;
  74         u_int           clkfreq_max;
  75 };
  76
  77 struct bwi_myaddr_bssid {
  78         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  79         uint8_t         bssid[IEEE80211_ADDR_LEN];
  80 } __packed;
  81
  82 static int      bwi_probe(device_t);
  83 static int      bwi_attach(device_t);
  84 static int      bwi_detach(device_t);
  85 static int      bwi_shutdown(device_t);
  86
  87 static void     bwi_init(void *);
  88 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
  89 static void     bwi_start(struct ifnet *);
  90 static void     bwi_watchdog(struct ifnet *);
  91 static int      bwi_newstate(struct ieee80211com *, enum ieee80211_state, int);
  92 static void     bwi_updateslot(struct ifnet *);
  93 static int      bwi_media_change(struct ifnet *);
  94 static void     *bwi_ratectl_attach(struct ieee80211com *, u_int);
  95
  96 static void     bwi_next_scan(void *);
  97 static void     bwi_calibrate(void *);
  98
  99 static void     bwi_newstate_begin(struct bwi_softc *, enum ieee80211_state);
 100 static void     bwi_init_statechg(struct bwi_softc *, int);
 101 static int      bwi_stop(struct bwi_softc *, int);
 102 static int      bwi_newbuf(struct bwi_softc *, int, int);
 103 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 104                           struct ieee80211_node **, int);
 105
 106 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 107                                        bus_addr_t, int, int);
 108 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 109
 110 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 111 static int      bwi_init_rx_ring32(struct bwi_softc *);
 112 static int      bwi_init_txstats32(struct bwi_softc *);
 113 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 114 static void     bwi_free_rx_ring32(struct bwi_softc *);
 115 static void     bwi_free_txstats32(struct bwi_softc *);
 116 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 117 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 118                                     int, bus_addr_t, int);
 119 static int      bwi_rxeof32(struct bwi_softc *);
 120 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 121 static void     bwi_txeof_status32(struct bwi_softc *);
 122
 123 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 124 static int      bwi_init_rx_ring64(struct bwi_softc *);
 125 static int      bwi_init_txstats64(struct bwi_softc *);
 126 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 127 static void     bwi_free_rx_ring64(struct bwi_softc *);
 128 static void     bwi_free_txstats64(struct bwi_softc *);
 129 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 130 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 131                                     int, bus_addr_t, int);
 132 static int      bwi_rxeof64(struct bwi_softc *);
 133 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 134 static void     bwi_txeof_status64(struct bwi_softc *);
 135
 136 static void     bwi_intr(void *);
 137 static int      bwi_rxeof(struct bwi_softc *, int);
 138 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 139 static void     bwi_txeof(struct bwi_softc *);
 140 static void     bwi_txeof_status(struct bwi_softc *, int);
 141 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 142 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 143 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 144 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 145                                 struct bwi_rxbuf_hdr *, const void *, int, int);
 146
 147 static int      bwi_dma_alloc(struct bwi_softc *);
 148 static void     bwi_dma_free(struct bwi_softc *);
 149 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 150                                    struct bwi_ring_data *, bus_size_t,
 151                                    uint32_t);
 152 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 153 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 154 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 155 static void     bwi_dma_txstats_free(struct bwi_softc *);
 156 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 157 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 158                                  bus_size_t, int);
 159
 160 static void     bwi_power_on(struct bwi_softc *, int);
 161 static int      bwi_power_off(struct bwi_softc *, int);
 162 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 163 static int      bwi_set_clock_delay(struct bwi_softc *);
 164 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 165 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 166 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 167                                     const uint8_t *);
 168 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 169 static int      bwi_set_chan(struct bwi_softc *, struct ieee80211_channel *);
 170
 171 static void     bwi_get_card_flags(struct bwi_softc *);
 172 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 173
 174 static int      bwi_bus_attach(struct bwi_softc *);
 175 static int      bwi_bbp_attach(struct bwi_softc *);
 176 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 177 static void     bwi_bbp_power_off(struct bwi_softc *);
 178
 179 static const char *bwi_regwin_name(const struct bwi_regwin *);
 180 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 181 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 182 static int      bwi_regwin_select(struct bwi_softc *, int);
 183
 184 static void     bwi_led_attach(struct bwi_softc *);
 185 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 186 static void     bwi_led_event(struct bwi_softc *, int);
 187 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 188 static void     bwi_led_blink_next(void *);
 189 static void     bwi_led_blink_end(void *);
 190
 191 static const struct bwi_dev {
 192         uint16_t        vid;
 193         uint16_t        did;
 194         const char      *desc;
 195 } bwi_devices[] = {
 196         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4301,
 197           "Broadcom BCM4301 802.11 Wireless Lan" },
 198
 199         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307,
 200           "Broadcom BCM4307 802.11 Wireless Lan" },
 201
 202         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4311,
 203           "Broadcom BCM4311 802.11 Wireless Lan" },
 204
 205         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4312,
 206           "Broadcom BCM4312 802.11 Wireless Lan" },
 207
 208         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_1,
 209           "Broadcom BCM4306 802.11 Wireless Lan" },
 210
 211         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2,
 212           "Broadcom BCM4306 802.11 Wireless Lan" },
 213
 214         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_3,
 215           "Broadcom BCM4306 802.11 Wireless Lan" },
 216
 217         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309,
 218           "Broadcom BCM4309 802.11 Wireless Lan" },
 219
 220         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318,
 221           "Broadcom BCM4318 802.11 Wireless Lan" },
 222
 223         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319,
 224           "Broadcom BCM4319 802.11 Wireless Lan" }
 225 };
 226
 227 static device_method_t bwi_methods[] = {
 228         DEVMETHOD(device_probe,         bwi_probe),
 229         DEVMETHOD(device_attach,        bwi_attach),
 230         DEVMETHOD(device_detach,        bwi_detach),
 231         DEVMETHOD(device_shutdown,      bwi_shutdown),
 232 #if 0
 233         DEVMETHOD(device_suspend,       bwi_suspend),
 234         DEVMETHOD(device_resume,        bwi_resume),
 235 #endif
 236         { 0, 0 }
 237 };
 238
 239 static driver_t bwi_driver = {
 240         "bwi",
 241         bwi_methods,
 242         sizeof(struct bwi_softc)
 243 };
 244
 245 static devclass_t bwi_devclass;
 246
 247 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0);
 248 DRIVER_MODULE(bwi, cardbus, bwi_driver, bwi_devclass, 0, 0);
 249
 250 MODULE_DEPEND(bwi, wlan, 1, 1, 1);
 251 MODULE_DEPEND(bwi, wlan_ratectl_onoe, 1, 1, 1);
 252 #if 0
 253 MODULE_DEPEND(bwi, wlan_ratectl_amrr, 1, 1, 1);
 254 #endif
 255 MODULE_DEPEND(bwi, pci, 1, 1, 1);
 256 MODULE_DEPEND(bwi, cardbus, 1, 1, 1);
 257
 258 static const struct {
 259         uint16_t        did_min;
 260         uint16_t        did_max;
 261         uint16_t        bbp_id;
 262 } bwi_bbpid_map[] = {
 263         { 0x4301, 0x4301, 0x4301 },
 264         { 0x4305, 0x4307, 0x4307 },
 265         { 0x4403, 0x4403, 0x4402 },
 266         { 0x4610, 0x4615, 0x4610 },
 267         { 0x4710, 0x4715, 0x4710 },
 268         { 0x4720, 0x4725, 0x4309 }
 269 };
 270
 271 static const struct {
 272         uint16_t        bbp_id;
 273         int             nregwin;
 274 } bwi_regwin_count[] = {
 275         { 0x4301, 5 },
 276         { 0x4306, 6 },
 277         { 0x4307, 5 },
 278         { 0x4310, 8 },
 279         { 0x4401, 3 },
 280         { 0x4402, 3 },
 281         { 0x4610, 9 },
 282         { 0x4704, 9 },
 283         { 0x4710, 9 },
 284         { 0x5365, 7 }
 285 };
 286
 287 #define CLKSRC(src)                             \
 288 [BWI_CLKSRC_ ## src] = {                        \
 289         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 290         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 291 }
 292
 293 static const struct {
 294         u_int   freq_min;
 295         u_int   freq_max;
 296 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 297         CLKSRC(LP_OSC),
 298         CLKSRC(CS_OSC),
 299         CLKSRC(PCI)
 300 };
 301
 302 #undef CLKSRC
 303
 304 #define VENDOR_LED_ACT(vendor)                          \
 305 {                                                       \
 306         .vid = PCI_VENDOR_##vendor,                     \
 307         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 308 }
 309
 310 static const struct {
 311         uint16_t        vid;
 312         uint8_t         led_act[BWI_LED_MAX];
 313 } bwi_vendor_led_act[] = {
 314         VENDOR_LED_ACT(COMPAQ),
 315         VENDOR_LED_ACT(LINKSYS)
 316 };
 317
 318 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 319         { BWI_VENDOR_LED_ACT_DEFAULT };
 320
 321 #undef VENDOR_LED_ACT
 322
 323 static const struct {
 324         int     on_dur;
 325         int     off_dur;
 326 } bwi_led_duration[109] = {
 327         [0]     = { 400, 100 },
 328         [2]     = { 150, 75 },
 329         [4]     = { 90, 45 },
 330         [11]    = { 66, 34 },
 331         [12]    = { 53, 26 },
 332         [18]    = { 42, 21 },
 333         [22]    = { 35, 17 },
 334         [24]    = { 32, 16 },
 335         [36]    = { 21, 10 },
 336         [48]    = { 16, 8 },
 337         [72]    = { 11, 5 },
 338         [96]    = { 9, 4 },
 339         [108]   = { 7, 3 }
 340 };
 341
 342 #ifdef BWI_DEBUG
 343 #ifdef BWI_DEBUG_VERBOSE
 344 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 345 #else
 346 static uint32_t bwi_debug;
 347 #endif
 348 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 349 #endif  /* BWI_DEBUG */
 350
 351 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 352
 353 static const struct ieee80211_rateset bwi_rateset_11b =
 354         { 4, { 2, 4, 11, 22 } };
 355 static const struct ieee80211_rateset bwi_rateset_11g =
 356         { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
 357
 358 uint16_t
 359 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 360 {
 361         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 362 }
 363
 364 static __inline void
 365 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 366                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 367                  int tx)
 368 {
 369         struct bwi_desc32 *desc = &desc_array[desc_idx];
 370         uint32_t ctrl, addr, addr_hi, addr_lo;
 371
 372         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 373         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 374
 375         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 376                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 377
 378         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 379                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 380         if (desc_idx == ndesc - 1)
 381                 ctrl |= BWI_DESC32_C_EOR;
 382         if (tx) {
 383                 /* XXX */
 384                 ctrl |= BWI_DESC32_C_FRAME_START |
 385                         BWI_DESC32_C_FRAME_END |
 386                         BWI_DESC32_C_INTR;
 387         }
 388
 389         desc->addr = htole32(addr);
 390         desc->ctrl = htole32(ctrl);
 391 }
 392
 393 /* XXX does not belong here */
 394 uint8_t
 395 bwi_rate2plcp(uint8_t rate)
 396 {
 397         rate &= IEEE80211_RATE_VAL;
 398
 399         switch (rate) {
 400         case 2:         return 0xa;
 401         case 4:         return 0x14;
 402         case 11:        return 0x37;
 403         case 22:        return 0x6e;
 404         case 44:        return 0xdc;
 405
 406         case 12:        return 0xb;
 407         case 18:        return 0xf;
 408         case 24:        return 0xa;
 409         case 36:        return 0xe;
 410         case 48:        return 0x9;
 411         case 72:        return 0xd;
 412         case 96:        return 0x8;
 413         case 108:       return 0xc;
 414
 415         default:
 416                 panic("unsupported rate %u\n", rate);
 417         }
 418 }
 419
 420 /* XXX does not belong here */
 421 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
 422 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
 423
 424 static __inline void
 425 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
 426 {
 427         uint32_t plcp;
 428
 429         plcp = __SHIFTIN(bwi_rate2plcp(rate), IEEE80211_OFDM_PLCP_RATE_MASK) |
 430                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
 431         *plcp0 = htole32(plcp);
 432 }
 433
 434 /* XXX does not belong here */
 435 struct ieee80211_ds_plcp_hdr {
 436         uint8_t         i_signal;
 437         uint8_t         i_service;
 438         uint16_t        i_length;
 439         uint16_t        i_crc;
 440 } __packed;
 441
 442 #define IEEE80211_DS_PLCP_SERVICE_LOCKED        0x04
 443 #define IEEE80211_DS_PLCL_SERVICE_PBCC          0x08
 444 #define IEEE80211_DS_PLCP_SERVICE_LENEXT5       0x20
 445 #define IEEE80211_DS_PLCP_SERVICE_LENEXT6       0x40
 446 #define IEEE80211_DS_PLCP_SERVICE_LENEXT7       0x80
 447
 448 static __inline void
 449 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
 450                    uint8_t rate)
 451 {
 452         int len, service, pkt_bitlen;
 453
 454         pkt_bitlen = pkt_len * NBBY;
 455         len = howmany(pkt_bitlen * 2, rate);
 456
 457         service = IEEE80211_DS_PLCP_SERVICE_LOCKED;
 458         if (rate == (11 * 2)) {
 459                 int pkt_bitlen1;
 460
 461                 /*
 462                  * PLCP service field needs to be adjusted,
 463                  * if TX rate is 11Mbytes/s
 464                  */
 465                 pkt_bitlen1 = len * 11;
 466                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
 467                         service |= IEEE80211_DS_PLCP_SERVICE_LENEXT7;
 468         }
 469
 470         plcp->i_signal = bwi_rate2plcp(rate);
 471         plcp->i_service = service;
 472         plcp->i_length = htole16(len);
 473         /* NOTE: do NOT touch i_crc */
 474 }
 475
 476 static __inline void
 477 bwi_plcp_header(void *plcp, int pkt_len, uint8_t rate)
 478 {
 479         enum ieee80211_modtype modtype;
 480
 481         /*
 482          * Assume caller has zeroed 'plcp'
 483          */
 484
 485         modtype = ieee80211_rate2modtype(rate);
 486         if (modtype == IEEE80211_MODTYPE_OFDM)
 487                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
 488         else if (modtype == IEEE80211_MODTYPE_DS)
 489                 bwi_ds_plcp_header(plcp, pkt_len, rate);
 490         else
 491                 panic("unsupport modulation type %u\n", modtype);
 492 }
 493
 494 static __inline uint8_t
 495 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
 496 {
 497         uint32_t plcp;
 498         uint8_t plcp_rate;
 499
 500         plcp = le32toh(*plcp0);
 501         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
 502         return ieee80211_plcp2rate(plcp_rate, 1);
 503 }
 504
 505 static __inline uint8_t
 506 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
 507 {
 508         return ieee80211_plcp2rate(hdr->i_signal, 0);
 509 }
 510
 511 static int
 512 bwi_probe(device_t dev)
 513 {
 514         const struct bwi_dev *b;
 515         uint16_t did, vid;
 516
 517         did = pci_get_device(dev);
 518         vid = pci_get_vendor(dev);
 519
 520         for (b = bwi_devices; b->desc != NULL; ++b) {
 521                 if (b->did == did && b->vid == vid) {
 522                         device_set_desc(dev, b->desc);
 523                         return 0;
 524                 }
 525         }
 526         return ENXIO;
 527 }
 528
 529 static int
 530 bwi_attach(device_t dev)
 531 {
 532         struct bwi_softc *sc = device_get_softc(dev);
 533         struct ieee80211com *ic = &sc->sc_ic;
 534         struct ifnet *ifp = &ic->ic_if;
 535         struct bwi_mac *mac;
 536         struct bwi_phy *phy;
 537         int i, error;
 538
 539         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 540         sc->sc_dev = dev;
 541
 542         /*
 543          * Initialize sysctl variables
 544          */
 545         sc->sc_fw_version = BWI_FW_VERSION3;
 546         sc->sc_dwell_time = 200;
 547         sc->sc_led_idle = (2350 * hz) / 1000;
 548         sc->sc_led_blink = 1;
 549         sc->sc_txpwr_calib = 1;
 550 #ifdef BWI_DEBUG
 551         sc->sc_debug = bwi_debug;
 552 #endif
 553
 554         callout_init(&sc->sc_scan_ch);
 555         callout_init(&sc->sc_calib_ch);
 556
 557 #ifndef BURN_BRIDGES
 558         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 559                 uint32_t irq, mem;
 560
 561                 /* XXX Save more PCIR */
 562                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 563                 mem = pci_read_config(dev, BWI_PCIR_BAR, 4);
 564
 565                 device_printf(dev, "chip is in D%d power mode "
 566                     "-- setting to D0\n", pci_get_powerstate(dev));
 567
 568                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 569
 570                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 571                 pci_write_config(dev, BWI_PCIR_BAR, mem, 4);
 572         }
 573 #endif  /* !BURN_BRIDGE */
 574
 575         pci_enable_busmaster(dev);
 576
 577         /* Get more PCI information */
 578         sc->sc_pci_revid = pci_get_revid(dev);
 579         sc->sc_pci_subvid = pci_get_subvendor(dev);
 580         sc->sc_pci_subdid = pci_get_subdevice(dev);
 581
 582         /*
 583          * Allocate IO memory
 584          */
 585         sc->sc_mem_rid = BWI_PCIR_BAR;
 586         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 587                                                 &sc->sc_mem_rid, RF_ACTIVE);
 588         if (sc->sc_mem_res == NULL) {
 589                 device_printf(dev, "can't allocate IO memory\n");
 590                 return ENXIO;
 591         }
 592         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
 593         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
 594
 595         /*
 596          * Allocate IRQ
 597          */
 598         sc->sc_irq_rid = 0;
 599         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 600                                                 &sc->sc_irq_rid,
 601                                                 RF_SHAREABLE | RF_ACTIVE);
 602         if (sc->sc_irq_res == NULL) {
 603                 device_printf(dev, "can't allocate irq\n");
 604                 error = ENXIO;
 605                 goto fail;
 606         }
 607
 608         /*
 609          * Create sysctl tree
 610          */
 611         sysctl_ctx_init(&sc->sc_sysctl_ctx);
 612         sc->sc_sysctl_tree = SYSCTL_ADD_NODE(&sc->sc_sysctl_ctx,
 613                                              SYSCTL_STATIC_CHILDREN(_hw),
 614                                              OID_AUTO,
 615                                              device_get_nameunit(dev),
 616                                              CTLFLAG_RD, 0, "");
 617         if (sc->sc_sysctl_tree == NULL) {
 618                 device_printf(dev, "can't add sysctl node\n");
 619                 error = ENXIO;
 620                 goto fail;
 621         }
 622
 623         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 624                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 625                         "dwell_time", CTLFLAG_RW, &sc->sc_dwell_time, 0,
 626                         "Channel dwell time during scan (msec)");
 627         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 628                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 629                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 630                         "Firmware version");
 631         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 632                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 633                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 634                         "# ticks before LED enters idle state");
 635         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 636                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 637                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 638                        "Allow LED to blink");
 639         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 640                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 641                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 642                        "Enable software TX power calibration");
 643 #ifdef BWI_DEBUG
 644         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 645                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 646                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 647 #endif
 648
 649         bwi_power_on(sc, 1);
 650
 651         error = bwi_bbp_attach(sc);
 652         if (error)
 653                 goto fail;
 654
 655         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 656         if (error)
 657                 goto fail;
 658
 659         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 660                 error = bwi_set_clock_delay(sc);
 661                 if (error)
 662                         goto fail;
 663
 664                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 665                 if (error)
 666                         goto fail;
 667
 668                 error = bwi_get_pwron_delay(sc);
 669                 if (error)
 670                         goto fail;
 671         }
 672
 673         error = bwi_bus_attach(sc);
 674         if (error)
 675                 goto fail;
 676
 677         bwi_get_card_flags(sc);
 678
 679         bwi_led_attach(sc);
 680
 681         for (i = 0; i < sc->sc_nmac; ++i) {
 682                 struct bwi_regwin *old;
 683
 684                 mac = &sc->sc_mac[i];
 685                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 686                 if (error)
 687                         goto fail;
 688
 689                 error = bwi_mac_lateattach(mac);
 690                 if (error)
 691                         goto fail;
 692
 693                 error = bwi_regwin_switch(sc, old, NULL);
 694                 if (error)
 695                         goto fail;
 696         }
 697
 698         /*
 699          * XXX First MAC is known to exist
 700          * TODO2
 701          */
 702         mac = &sc->sc_mac[0];
 703         phy = &mac->mac_phy;
 704
 705         bwi_bbp_power_off(sc);
 706
 707         error = bwi_dma_alloc(sc);
 708         if (error)
 709                 goto fail;
 710
 711         ifp->if_softc = sc;
 712         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 713         ifp->if_init = bwi_init;
 714         ifp->if_ioctl = bwi_ioctl;
 715         ifp->if_start = bwi_start;
 716         ifp->if_watchdog = bwi_watchdog;
 717         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 718         ifq_set_ready(&ifp->if_snd);
 719
 720         /* Get locale */
 721         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 722                                    BWI_SPROM_CARD_INFO_LOCALE);
 723         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 724
 725         /*
 726          * Setup ratesets, phytype, channels and get MAC address
 727          */
 728         if (phy->phy_mode == IEEE80211_MODE_11B ||
 729             phy->phy_mode == IEEE80211_MODE_11G) {
 730                 uint16_t chan_flags;
 731
 732                 ic->ic_sup_rates[IEEE80211_MODE_11B] = bwi_rateset_11b;
 733
 734                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 735                         chan_flags = IEEE80211_CHAN_B;
 736                         ic->ic_phytype = IEEE80211_T_DS;
 737                 } else {
 738                         chan_flags = IEEE80211_CHAN_CCK |
 739                                      IEEE80211_CHAN_OFDM |
 740                                      IEEE80211_CHAN_DYN |
 741                                      IEEE80211_CHAN_2GHZ;
 742                         ic->ic_phytype = IEEE80211_T_OFDM;
 743                         ic->ic_sup_rates[IEEE80211_MODE_11G] =
 744                                 bwi_rateset_11g;
 745                 }
 746
 747                 /* XXX depend on locale */
 748                 for (i = 1; i <= 14; ++i) {
 749                         ic->ic_channels[i].ic_freq =
 750                                 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 751                         ic->ic_channels[i].ic_flags = chan_flags;
 752                 }
 753
 754                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, ic->ic_myaddr);
 755                 if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 756                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, ic->ic_myaddr);
 757                         if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 758                                 device_printf(dev, "invalid MAC address: "
 759                                         "%6D\n", ic->ic_myaddr, ":");
 760                         }
 761                 }
 762         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 763                 /* TODO:11A */
 764                 error = ENXIO;
 765                 goto fail;
 766         } else {
 767                 panic("unknown phymode %d\n", phy->phy_mode);
 768         }
 769
 770         ic->ic_caps = IEEE80211_C_SHSLOT |
 771                       IEEE80211_C_SHPREAMBLE |
 772                       IEEE80211_C_WPA |
 773                       IEEE80211_C_MONITOR;
 774         ic->ic_state = IEEE80211_S_INIT;
 775         ic->ic_opmode = IEEE80211_M_STA;
 776
 777         IEEE80211_ONOE_PARAM_SETUP(&sc->sc_onoe_param);
 778         ic->ic_ratectl.rc_st_ratectl_cap = IEEE80211_RATECTL_CAP_ONOE;
 779         ic->ic_ratectl.rc_st_ratectl = IEEE80211_RATECTL_ONOE;
 780         ic->ic_ratectl.rc_st_attach = bwi_ratectl_attach;
 781
 782         ic->ic_updateslot = bwi_updateslot;
 783
 784         ieee80211_ifattach(ic);
 785
 786         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 787         ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
 788
 789         sc->sc_newstate = ic->ic_newstate;
 790         ic->ic_newstate = bwi_newstate;
 791
 792         ieee80211_media_init(ic, bwi_media_change, ieee80211_media_status);
 793
 794         /*
 795          * Attach radio tap
 796          */
 797         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 798                       sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
 799                       &sc->sc_drvbpf);
 800
 801         sc->sc_tx_th_len = roundup(sizeof(sc->sc_tx_th), sizeof(uint32_t));
 802         sc->sc_tx_th.wt_ihdr.it_len = htole16(sc->sc_tx_th_len);
 803         sc->sc_tx_th.wt_ihdr.it_present = htole32(BWI_TX_RADIOTAP_PRESENT);
 804
 805         sc->sc_rx_th_len = roundup(sizeof(sc->sc_rx_th), sizeof(uint32_t));
 806         sc->sc_rx_th.wr_ihdr.it_len = htole16(sc->sc_rx_th_len);
 807         sc->sc_rx_th.wr_ihdr.it_present = htole32(BWI_RX_RADIOTAP_PRESENT);
 808
 809         error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, bwi_intr, sc,
 810                                &sc->sc_irq_handle, ifp->if_serializer);
 811         if (error) {
 812                 device_printf(dev, "can't setup intr\n");
 813                 bpfdetach(ifp);
 814                 ieee80211_ifdetach(ic);
 815                 goto fail;
 816         }
 817
 818         ifp->if_cpuid = ithread_cpuid(rman_get_start(sc->sc_irq_res));
 819         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
 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 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
1004         uint16_t bbp_id, rw_type;
1005         uint8_t rw_rev;
1006         uint32_t info;
1007         int error, nregwin, i;
1008
1009         /*
1010          * Get 0th regwin information
1011          * NOTE: 0th regwin should exist
1012          */
1013         error = bwi_regwin_select(sc, 0);
1014         if (error) {
1015                 device_printf(sc->sc_dev, "can't select regwin 0\n");
1016                 return error;
1017         }
1018         bwi_regwin_info(sc, &rw_type, &rw_rev);
1019
1020         /*
1021          * Find out BBP id
1022          */
1023         bbp_id = 0;
1024         info = 0;
1025         if (rw_type == BWI_REGWIN_T_COM) {
1026                 info = CSR_READ_4(sc, BWI_INFO);
1027                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
1028
1029                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
1030
1031                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
1032         } else {
1033                 uint16_t did = pci_get_device(sc->sc_dev);
1034                 uint8_t revid = pci_get_revid(sc->sc_dev);
1035
1036                 for (i = 0; i < N(bwi_bbpid_map); ++i) {
1037                         if (did >= bwi_bbpid_map[i].did_min &&
1038                             did <= bwi_bbpid_map[i].did_max) {
1039                                 bbp_id = bwi_bbpid_map[i].bbp_id;
1040                                 break;
1041                         }
1042                 }
1043                 if (bbp_id == 0) {
1044                         device_printf(sc->sc_dev, "no BBP id for device id "
1045                                       "0x%04x\n", did);
1046                         return ENXIO;
1047                 }
1048
1049                 info = __SHIFTIN(revid, BWI_INFO_BBPREV_MASK) |
1050                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
1051         }
1052
1053         /*
1054          * Find out number of regwins
1055          */
1056         nregwin = 0;
1057         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
1058                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
1059         } else {
1060                 for (i = 0; i < N(bwi_regwin_count); ++i) {
1061                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
1062                                 nregwin = bwi_regwin_count[i].nregwin;
1063                                 break;
1064                         }
1065                 }
1066                 if (nregwin == 0) {
1067                         device_printf(sc->sc_dev, "no number of win for "
1068                                       "BBP id 0x%04x\n", bbp_id);
1069                         return ENXIO;
1070                 }
1071         }
1072
1073         /* Record BBP id/rev for later using */
1074         sc->sc_bbp_id = bbp_id;
1075         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
1076         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
1077         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
1078                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
1079
1080         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
1081                 nregwin, sc->sc_cap);
1082
1083         /*
1084          * Create rest of the regwins
1085          */
1086
1087         /* Don't re-create common regwin, if it is already created */
1088         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
1089
1090         for (; i < nregwin; ++i) {
1091                 /*
1092                  * Get regwin information
1093                  */
1094                 error = bwi_regwin_select(sc, i);
1095                 if (error) {
1096                         device_printf(sc->sc_dev,
1097                                       "can't select regwin %d\n", i);
1098                         return error;
1099                 }
1100                 bwi_regwin_info(sc, &rw_type, &rw_rev);
1101
1102                 /*
1103                  * Try attach:
1104                  * 1) Bus (PCI/PCIE) regwin
1105                  * 2) MAC regwin
1106                  * Ignore rest types of regwin
1107                  */
1108                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
1109                     rw_type == BWI_REGWIN_T_BUSPCIE) {
1110                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1111                                 device_printf(sc->sc_dev,
1112                                               "bus regwin already exists\n");
1113                         } else {
1114                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
1115                                                   rw_type, rw_rev);
1116                         }
1117                 } else if (rw_type == BWI_REGWIN_T_MAC) {
1118                         /* XXX ignore return value */
1119                         bwi_mac_attach(sc, i, rw_rev);
1120                 }
1121         }
1122
1123         /* At least one MAC shold exist */
1124         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
1125                 device_printf(sc->sc_dev, "no MAC was found\n");
1126                 return ENXIO;
1127         }
1128         KKASSERT(sc->sc_nmac > 0);
1129
1130         /* Bus regwin must exist */
1131         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1132                 device_printf(sc->sc_dev, "no bus regwin was found\n");
1133                 return ENXIO;
1134         }
1135
1136         /* Start with first MAC */
1137         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
1138         if (error)
1139                 return error;
1140
1141         return 0;
1142 #undef N
1143 }
1144
1145 int
1146 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
1147 {
1148         struct bwi_regwin *old, *bus;
1149         uint32_t val;
1150         int error;
1151
1152         bus = &sc->sc_bus_regwin;
1153         KKASSERT(sc->sc_cur_regwin == &mac->mac_regwin);
1154
1155         /*
1156          * Tell bus to generate requested interrupts
1157          */
1158         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1159                 /*
1160                  * NOTE: Read BWI_FLAGS from MAC regwin
1161                  */
1162                 val = CSR_READ_4(sc, BWI_FLAGS);
1163
1164                 error = bwi_regwin_switch(sc, bus, &old);
1165                 if (error)
1166                         return error;
1167
1168                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
1169         } else {
1170                 uint32_t mac_mask;
1171
1172                 mac_mask = 1 << mac->mac_id;
1173
1174                 error = bwi_regwin_switch(sc, bus, &old);
1175                 if (error)
1176                         return error;
1177
1178                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
1179                 val |= mac_mask << 8;
1180                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
1181         }
1182
1183         if (sc->sc_flags & BWI_F_BUS_INITED)
1184                 goto back;
1185
1186         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1187                 /*
1188                  * Enable prefetch and burst
1189                  */
1190                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
1191                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
1192
1193                 if (bus->rw_rev < 5) {
1194                         struct bwi_regwin *com = &sc->sc_com_regwin;
1195
1196                         /*
1197                          * Configure timeouts for bus operation
1198                          */
1199
1200                         /*
1201                          * Set service timeout and request timeout
1202                          */
1203                         CSR_SETBITS_4(sc, BWI_CONF_LO,
1204                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
1205                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
1206
1207                         /*
1208                          * If there is common regwin, we switch to that regwin
1209                          * and switch back to bus regwin once we have done.
1210                          */
1211                         if (BWI_REGWIN_EXIST(com)) {
1212                                 error = bwi_regwin_switch(sc, com, NULL);
1213                                 if (error)
1214                                         return error;
1215                         }
1216
1217                         /* Let bus know what we have changed */
1218                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
1219                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
1220                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
1221                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
1222
1223                         if (BWI_REGWIN_EXIST(com)) {
1224                                 error = bwi_regwin_switch(sc, bus, NULL);
1225                                 if (error)
1226                                         return error;
1227                         }
1228                 } else if (bus->rw_rev >= 11) {
1229                         /*
1230                          * Enable memory read multiple
1231                          */
1232                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1233                 }
1234         } else {
1235                 /* TODO:PCIE */
1236         }
1237
1238         sc->sc_flags |= BWI_F_BUS_INITED;
1239 back:
1240         return bwi_regwin_switch(sc, old, NULL);
1241 }
1242
1243 static void
1244 bwi_get_card_flags(struct bwi_softc *sc)
1245 {
1246         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1247         if (sc->sc_card_flags == 0xffff)
1248                 sc->sc_card_flags = 0;
1249
1250         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1251             sc->sc_pci_subdid == 0x4e && /* XXX */
1252             sc->sc_pci_revid > 0x40)
1253                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1254
1255         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1256 }
1257
1258 static void
1259 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1260 {
1261         int i;
1262
1263         for (i = 0; i < 3; ++i) {
1264                 *((uint16_t *)eaddr + i) =
1265                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1266         }
1267 }
1268
1269 static void
1270 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1271 {
1272         struct bwi_regwin *com;
1273         uint32_t val;
1274         u_int div;
1275         int src;
1276
1277         bzero(freq, sizeof(*freq));
1278         com = &sc->sc_com_regwin;
1279
1280         KKASSERT(BWI_REGWIN_EXIST(com));
1281         KKASSERT(sc->sc_cur_regwin == com);
1282         KKASSERT(sc->sc_cap & BWI_CAP_CLKMODE);
1283
1284         /*
1285          * Calculate clock frequency
1286          */
1287         src = -1;
1288         div = 0;
1289         if (com->rw_rev < 6) {
1290                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1291                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1292                         src = BWI_CLKSRC_PCI;
1293                         div = 64;
1294                 } else {
1295                         src = BWI_CLKSRC_CS_OSC;
1296                         div = 32;
1297                 }
1298         } else if (com->rw_rev < 10) {
1299                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1300
1301                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1302                 if (src == BWI_CLKSRC_LP_OSC) {
1303                         div = 1;
1304                 } else {
1305                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1306
1307                         /* Unknown source */
1308                         if (src >= BWI_CLKSRC_MAX)
1309                                 src = BWI_CLKSRC_CS_OSC;
1310                 }
1311         } else {
1312                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1313
1314                 src = BWI_CLKSRC_CS_OSC;
1315                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1316         }
1317
1318         KKASSERT(src >= 0 && src < BWI_CLKSRC_MAX);
1319         KKASSERT(div != 0);
1320
1321         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1322                 src == BWI_CLKSRC_PCI ? "PCI" :
1323                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1324
1325         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1326         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1327
1328         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1329                 freq->clkfreq_min, freq->clkfreq_max);
1330 }
1331
1332 static int
1333 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1334 {
1335         struct bwi_regwin *old, *com;
1336         uint32_t clk_ctrl, clk_src;
1337         int error, pwr_off = 0;
1338
1339         com = &sc->sc_com_regwin;
1340         if (!BWI_REGWIN_EXIST(com))
1341                 return 0;
1342
1343         if (com->rw_rev >= 10 || com->rw_rev < 6)
1344                 return 0;
1345
1346         /*
1347          * For common regwin whose rev is [6, 10), the chip
1348          * must be capable to change clock mode.
1349          */
1350         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1351                 return 0;
1352
1353         error = bwi_regwin_switch(sc, com, &old);
1354         if (error)
1355                 return error;
1356
1357         if (clk_mode == BWI_CLOCK_MODE_FAST)
1358                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1359
1360         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1361         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1362
1363         switch (clk_mode) {
1364         case BWI_CLOCK_MODE_FAST:
1365                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1366                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1367                 break;
1368         case BWI_CLOCK_MODE_SLOW:
1369                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1370                 break;
1371         case BWI_CLOCK_MODE_DYN:
1372                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1373                               BWI_CLOCK_CTRL_IGNPLL |
1374                               BWI_CLOCK_CTRL_NODYN);
1375                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1376                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1377                         pwr_off = 1;
1378                 }
1379                 break;
1380         }
1381         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1382
1383         if (pwr_off)
1384                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1385
1386         return bwi_regwin_switch(sc, old, NULL);
1387 }
1388
1389 static int
1390 bwi_set_clock_delay(struct bwi_softc *sc)
1391 {
1392         struct bwi_regwin *old, *com;
1393         int error;
1394
1395         com = &sc->sc_com_regwin;
1396         if (!BWI_REGWIN_EXIST(com))
1397                 return 0;
1398
1399         error = bwi_regwin_switch(sc, com, &old);
1400         if (error)
1401                 return error;
1402
1403         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1404                 if (sc->sc_bbp_rev == 0)
1405                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1406                 else if (sc->sc_bbp_rev == 1)
1407                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1408         }
1409
1410         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1411                 if (com->rw_rev >= 10) {
1412                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1413                 } else {
1414                         struct bwi_clock_freq freq;
1415
1416                         bwi_get_clock_freq(sc, &freq);
1417                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1418                                 howmany(freq.clkfreq_max * 150, 1000000));
1419                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1420                                 howmany(freq.clkfreq_max * 15, 1000000));
1421                 }
1422         }
1423
1424         return bwi_regwin_switch(sc, old, NULL);
1425 }
1426
1427 static void
1428 bwi_init(void *xsc)
1429 {
1430         bwi_init_statechg(xsc, 1);
1431 }
1432
1433 static void
1434 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1435 {
1436         struct ieee80211com *ic = &sc->sc_ic;
1437         struct ifnet *ifp = &ic->ic_if;
1438         struct bwi_mac *mac;
1439         int error;
1440
1441         ASSERT_SERIALIZED(ifp->if_serializer);
1442
1443         error = bwi_stop(sc, statechg);
1444         if (error) {
1445                 if_printf(ifp, "can't stop\n");
1446                 return;
1447         }
1448
1449         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1450
1451         /* TODO: 2 MAC */
1452
1453         mac = &sc->sc_mac[0];
1454         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1455         if (error)
1456                 goto back;
1457
1458         error = bwi_mac_init(mac);
1459         if (error)
1460                 goto back;
1461
1462         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1463
1464         bcopy(IF_LLADDR(ifp), ic->ic_myaddr, sizeof(ic->ic_myaddr));
1465
1466         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1467         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, ic->ic_myaddr);
1468
1469         bwi_mac_reset_hwkeys(mac);
1470
1471         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1472                 int i;
1473
1474 #define NRETRY  1000
1475                 /*
1476                  * Drain any possible pending TX status
1477                  */
1478                 for (i = 0; i < NRETRY; ++i) {
1479                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1480                              BWI_TXSTATUS0_VALID) == 0)
1481                                 break;
1482                         CSR_READ_4(sc, BWI_TXSTATUS1);
1483                 }
1484                 if (i == NRETRY)
1485                         if_printf(ifp, "can't drain TX status\n");
1486 #undef NRETRY
1487         }
1488
1489         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1490                 bwi_mac_updateslot(mac, 1);
1491
1492         /* Start MAC */
1493         error = bwi_mac_start(mac);
1494         if (error)
1495                 goto back;
1496
1497         /* Enable intrs */
1498         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1499
1500         ifp->if_flags |= IFF_RUNNING;
1501         ifp->if_flags &= ~IFF_OACTIVE;
1502
1503         if (statechg) {
1504                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
1505                         if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
1506                                 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
1507                 } else {
1508                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1509                 }
1510         } else {
1511                 ieee80211_new_state(ic, ic->ic_state, -1);
1512         }
1513 back:
1514         if (error)
1515                 bwi_stop(sc, 1);
1516         else
1517                 ifp->if_start(ifp);
1518 }
1519
1520 static int
1521 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t req, struct ucred *cr)
1522 {
1523         struct bwi_softc *sc = ifp->if_softc;
1524         int error = 0;
1525
1526         ASSERT_SERIALIZED(ifp->if_serializer);
1527
1528         switch (cmd) {
1529         case SIOCSIFFLAGS:
1530                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1531                     (IFF_UP | IFF_RUNNING)) {
1532                         struct bwi_mac *mac;
1533                         int promisc = -1;
1534
1535                         KKASSERT(sc->sc_cur_regwin->rw_type ==
1536                                  BWI_REGWIN_T_MAC);
1537                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1538
1539                         if ((ifp->if_flags & IFF_PROMISC) &&
1540                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1541                                 promisc = 1;
1542                                 sc->sc_flags |= BWI_F_PROMISC;
1543                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1544                                    (sc->sc_flags & BWI_F_PROMISC)) {
1545                                 promisc = 0;
1546                                 sc->sc_flags &= ~BWI_F_PROMISC;
1547                         }
1548
1549                         if (promisc >= 0)
1550                                 bwi_mac_set_promisc(mac, promisc);
1551                 }
1552
1553                 if (ifp->if_flags & IFF_UP) {
1554                         if ((ifp->if_flags & IFF_RUNNING) == 0)
1555                                 bwi_init(sc);
1556                 } else {
1557                         if (ifp->if_flags & IFF_RUNNING)
1558                                 bwi_stop(sc, 1);
1559                 }
1560                 break;
1561         default:
1562                 error = ieee80211_ioctl(&sc->sc_ic, cmd, req, cr);
1563                 break;
1564         }
1565
1566         if (error == ENETRESET) {
1567                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1568                     (IFF_UP | IFF_RUNNING))
1569                         bwi_init(sc);
1570                 error = 0;
1571         }
1572         return error;
1573 }
1574
1575 static void
1576 bwi_start(struct ifnet *ifp)
1577 {
1578         struct bwi_softc *sc = ifp->if_softc;
1579         struct ieee80211com *ic = &sc->sc_ic;
1580         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1581         int trans, idx;
1582
1583         ASSERT_SERIALIZED(ifp->if_serializer);
1584
1585         if ((ifp->if_flags & IFF_OACTIVE) ||
1586             (ifp->if_flags & IFF_RUNNING) == 0)
1587                 return;
1588
1589         trans = 0;
1590         idx = tbd->tbd_idx;
1591
1592         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1593                 struct ieee80211_frame *wh;
1594                 struct ieee80211_node *ni;
1595                 struct mbuf *m;
1596                 int mgt_pkt = 0;
1597
1598                 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1599                         IF_DEQUEUE(&ic->ic_mgtq, m);
1600
1601                         ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1602                         m->m_pkthdr.rcvif = NULL;
1603
1604                         mgt_pkt = 1;
1605                 } else if (!ifq_is_empty(&ifp->if_snd)) {
1606                         struct ether_header *eh;
1607
1608                         if (ic->ic_state != IEEE80211_S_RUN) {
1609                                 ifq_purge(&ifp->if_snd);
1610                                 break;
1611                         }
1612
1613                         m = ifq_dequeue(&ifp->if_snd, NULL);
1614                         if (m == NULL)
1615                                 break;
1616
1617                         if (m->m_len < sizeof(*eh)) {
1618                                 m = m_pullup(m, sizeof(*eh));
1619                                 if (m == NULL) {
1620                                         ifp->if_oerrors++;
1621                                         continue;
1622                                 }
1623                         }
1624                         eh = mtod(m, struct ether_header *);
1625
1626                         ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1627                         if (ni == NULL) {
1628                                 m_freem(m);
1629                                 ifp->if_oerrors++;
1630                                 continue;
1631                         }
1632
1633                         /* TODO: PS */
1634
1635                         BPF_MTAP(ifp, m);
1636
1637                         m = ieee80211_encap(ic, m, ni);
1638                         if (m == NULL) {
1639                                 ieee80211_free_node(ni);
1640                                 ifp->if_oerrors++;
1641                                 continue;
1642                         }
1643                 } else {
1644                         break;
1645                 }
1646
1647                 if (ic->ic_rawbpf != NULL)
1648                         bpf_mtap(ic->ic_rawbpf, m);
1649
1650                 wh = mtod(m, struct ieee80211_frame *);
1651                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1652                         if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1653                                 ieee80211_free_node(ni);
1654                                 m_freem(m);
1655                                 ifp->if_oerrors++;
1656                                 continue;
1657                         }
1658                 }
1659                 wh = NULL;      /* Catch any invalid use */
1660
1661                 if (bwi_encap(sc, idx, m, &ni, mgt_pkt) != 0) {
1662                         /* 'm' is freed in bwi_encap() if we reach here */
1663                         if (ni != NULL)
1664                                 ieee80211_free_node(ni);
1665                         ifp->if_oerrors++;
1666                         continue;
1667                 }
1668
1669                 trans = 1;
1670                 tbd->tbd_used++;
1671                 idx = (idx + 1) % BWI_TX_NDESC;
1672
1673                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1674                         ifp->if_flags |= IFF_OACTIVE;
1675                         break;
1676                 }
1677         }
1678         tbd->tbd_idx = idx;
1679
1680         if (trans)
1681                 sc->sc_tx_timer = 5;
1682         ifp->if_timer = 1;
1683 }
1684
1685 static void
1686 bwi_watchdog(struct ifnet *ifp)
1687 {
1688         struct bwi_softc *sc = ifp->if_softc;
1689
1690         ASSERT_SERIALIZED(ifp->if_serializer);
1691
1692         ifp->if_timer = 0;
1693
1694         if ((ifp->if_flags & IFF_RUNNING) == 0)
1695                 return;
1696
1697         if (sc->sc_tx_timer) {
1698                 if (--sc->sc_tx_timer == 0) {
1699                         if_printf(ifp, "watchdog timeout\n");
1700                         ifp->if_oerrors++;
1701                         /* TODO */
1702                 } else {
1703                         ifp->if_timer = 1;
1704                 }
1705         }
1706         ieee80211_watchdog(&sc->sc_ic);
1707 }
1708
1709 static int
1710 bwi_stop(struct bwi_softc *sc, int state_chg)
1711 {
1712         struct ieee80211com *ic = &sc->sc_ic;
1713         struct ifnet *ifp = &ic->ic_if;
1714         struct bwi_mac *mac;
1715         int i, error, pwr_off = 0;
1716
1717         ASSERT_SERIALIZED(ifp->if_serializer);
1718
1719         if (state_chg)
1720                 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
1721         else
1722                 bwi_newstate_begin(sc, IEEE80211_S_INIT);
1723
1724         if (ifp->if_flags & IFF_RUNNING) {
1725                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1726                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1727
1728                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1729                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1730                 bwi_mac_stop(mac);
1731         }
1732
1733         for (i = 0; i < sc->sc_nmac; ++i) {
1734                 struct bwi_regwin *old_rw;
1735
1736                 mac = &sc->sc_mac[i];
1737                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1738                         continue;
1739
1740                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1741                 if (error)
1742                         continue;
1743
1744                 bwi_mac_shutdown(mac);
1745                 pwr_off = 1;
1746
1747                 bwi_regwin_switch(sc, old_rw, NULL);
1748         }
1749
1750         if (pwr_off)
1751                 bwi_bbp_power_off(sc);
1752
1753         sc->sc_tx_timer = 0;
1754         ifp->if_timer = 0;
1755         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1756         return 0;
1757 }
1758
1759 static void
1760 bwi_intr(void *xsc)
1761 {
1762         struct bwi_softc *sc = xsc;
1763         struct bwi_mac *mac;
1764         struct ifnet *ifp = &sc->sc_ic.ic_if;
1765         uint32_t intr_status;
1766         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1767         int i, txrx_error, tx = 0, rx_data = -1;
1768
1769         ASSERT_SERIALIZED(ifp->if_serializer);
1770
1771         if ((ifp->if_flags & IFF_RUNNING) == 0)
1772                 return;
1773
1774         /*
1775          * Get interrupt status
1776          */
1777         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1778         if (intr_status == 0xffffffff)  /* Not for us */
1779                 return;
1780
1781         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1782
1783         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1784         if (intr_status == 0)           /* Nothing is interesting */
1785                 return;
1786
1787         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1788         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1789
1790         txrx_error = 0;
1791         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1792         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1793                 uint32_t mask;
1794
1795                 if (BWI_TXRX_IS_RX(i))
1796                         mask = BWI_TXRX_RX_INTRS;
1797                 else
1798                         mask = BWI_TXRX_TX_INTRS;
1799
1800                 txrx_intr_status[i] =
1801                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1802
1803                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1804                          i, txrx_intr_status[i]);
1805
1806                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1807                         if_printf(ifp, "intr fatal TX/RX (%d) error 0x%08x\n",
1808                                   i, txrx_intr_status[i]);
1809                         txrx_error = 1;
1810                 }
1811         }
1812         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1813
1814         /*
1815          * Acknowledge interrupt
1816          */
1817         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1818
1819         for (i = 0; i < BWI_TXRX_NRING; ++i)
1820                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1821
1822         /* Disable all interrupts */
1823         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1824
1825         if (intr_status & BWI_INTR_PHY_TXERR) {
1826                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1827                         if_printf(ifp, "intr PHY TX error\n");
1828                         /* XXX to netisr0? */
1829                         bwi_init_statechg(sc, 0);
1830                         return;
1831                 }
1832         }
1833
1834         if (txrx_error) {
1835                 /* TODO: reset device */
1836         }
1837
1838         if (intr_status & BWI_INTR_TBTT)
1839                 bwi_mac_config_ps(mac);
1840
1841         if (intr_status & BWI_INTR_EO_ATIM)
1842                 if_printf(ifp, "EO_ATIM\n");
1843
1844         if (intr_status & BWI_INTR_PMQ) {
1845                 for (;;) {
1846                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1847                                 break;
1848                 }
1849                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1850         }
1851
1852         if (intr_status & BWI_INTR_NOISE)
1853                 if_printf(ifp, "intr noise\n");
1854
1855         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX)
1856                 rx_data = sc->sc_rxeof(sc);
1857
1858         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1859                 sc->sc_txeof_status(sc);
1860                 tx = 1;
1861         }
1862
1863         if (intr_status & BWI_INTR_TX_DONE) {
1864                 bwi_txeof(sc);
1865                 tx = 1;
1866         }
1867
1868         /* Re-enable interrupts */
1869         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1870
1871         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1872                 int evt = BWI_LED_EVENT_NONE;
1873
1874                 if (tx && rx_data > 0) {
1875                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1876                                 evt = BWI_LED_EVENT_RX;
1877                         else
1878                                 evt = BWI_LED_EVENT_TX;
1879                 } else if (tx) {
1880                         evt = BWI_LED_EVENT_TX;
1881                 } else if (rx_data > 0) {
1882                         evt = BWI_LED_EVENT_RX;
1883                 } else if (rx_data == 0) {
1884                         evt = BWI_LED_EVENT_POLL;
1885                 }
1886
1887                 if (evt != BWI_LED_EVENT_NONE)
1888                         bwi_led_event(sc, evt);
1889         }
1890 }
1891
1892 static void
1893 bwi_newstate_begin(struct bwi_softc *sc, enum ieee80211_state nstate)
1894 {
1895         callout_stop(&sc->sc_scan_ch);
1896         callout_stop(&sc->sc_calib_ch);
1897
1898         ieee80211_ratectl_newstate(&sc->sc_ic, nstate);
1899         bwi_led_newstate(sc, nstate);
1900
1901         if (nstate == IEEE80211_S_INIT)
1902                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1903 }
1904
1905 static int
1906 bwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1907 {
1908         struct bwi_softc *sc = ic->ic_if.if_softc;
1909         struct ifnet *ifp = &ic->ic_if;
1910         int error;
1911
1912         ASSERT_SERIALIZED(ifp->if_serializer);
1913
1914         bwi_newstate_begin(sc, nstate);
1915
1916         if (nstate == IEEE80211_S_INIT)
1917                 goto back;
1918
1919         error = bwi_set_chan(sc, ic->ic_curchan);
1920         if (error) {
1921                 if_printf(ifp, "can't set channel to %u\n",
1922                           ieee80211_chan2ieee(ic, ic->ic_curchan));
1923                 return error;
1924         }
1925
1926         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1927                 /* Nothing to do */
1928         } else if (nstate == IEEE80211_S_RUN) {
1929                 struct bwi_mac *mac;
1930
1931                 bwi_set_bssid(sc, ic->ic_bss->ni_bssid);
1932
1933                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1934                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1935
1936                 /* Initial TX power calibration */
1937                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1938 #ifdef notyet
1939                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1940 #else
1941                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1942 #endif
1943         } else {
1944                 bwi_set_bssid(sc, bwi_zero_addr);
1945         }
1946
1947 back:
1948         error = sc->sc_newstate(ic, nstate, arg);
1949
1950         if (nstate == IEEE80211_S_SCAN) {
1951                 callout_reset(&sc->sc_scan_ch,
1952                               (sc->sc_dwell_time * hz) / 1000,
1953                               bwi_next_scan, sc);
1954         } else if (nstate == IEEE80211_S_RUN) {
1955                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1956         }
1957         return error;
1958 }
1959
1960 static int
1961 bwi_media_change(struct ifnet *ifp)
1962 {
1963         int error;
1964
1965         ASSERT_SERIALIZED(ifp->if_serializer);
1966
1967         error = ieee80211_media_change(ifp);
1968         if (error != ENETRESET)
1969                 return error;
1970
1971         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
1972                 bwi_init(ifp->if_softc);
1973         return 0;
1974 }
1975
1976 static int
1977 bwi_dma_alloc(struct bwi_softc *sc)
1978 {
1979         int error, i, has_txstats;
1980         bus_addr_t lowaddr = 0;
1981         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1982         uint32_t txrx_ctrl_step = 0;
1983
1984         has_txstats = 0;
1985         for (i = 0; i < sc->sc_nmac; ++i) {
1986                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1987                         has_txstats = 1;
1988                         break;
1989                 }
1990         }
1991
1992         switch (sc->sc_bus_space) {
1993         case BWI_BUS_SPACE_30BIT:
1994         case BWI_BUS_SPACE_32BIT:
1995                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1996                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1997                 else
1998                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1999                 desc_sz = sizeof(struct bwi_desc32);
2000                 txrx_ctrl_step = 0x20;
2001
2002                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
2003                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
2004                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
2005                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
2006                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
2007                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
2008                 sc->sc_rxeof = bwi_rxeof32;
2009                 sc->sc_start_tx = bwi_start_tx32;
2010                 if (has_txstats) {
2011                         sc->sc_init_txstats = bwi_init_txstats32;
2012                         sc->sc_free_txstats = bwi_free_txstats32;
2013                         sc->sc_txeof_status = bwi_txeof_status32;
2014                 }
2015                 break;
2016
2017         case BWI_BUS_SPACE_64BIT:
2018                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
2019                 desc_sz = sizeof(struct bwi_desc64);
2020                 txrx_ctrl_step = 0x40;
2021
2022                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
2023                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
2024                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
2025                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
2026                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
2027                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
2028                 sc->sc_rxeof = bwi_rxeof64;
2029                 sc->sc_start_tx = bwi_start_tx64;
2030                 if (has_txstats) {
2031                         sc->sc_init_txstats = bwi_init_txstats64;
2032                         sc->sc_free_txstats = bwi_free_txstats64;
2033                         sc->sc_txeof_status = bwi_txeof_status64;
2034                 }
2035                 break;
2036         }
2037
2038         KKASSERT(lowaddr != 0);
2039         KKASSERT(desc_sz != 0);
2040         KKASSERT(txrx_ctrl_step != 0);
2041
2042         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
2043         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
2044
2045         /*
2046          * Create top level DMA tag
2047          */
2048         error = bus_dma_tag_create(NULL, BWI_ALIGN, 0,
2049                                    lowaddr, BUS_SPACE_MAXADDR,
2050                                    NULL, NULL,
2051                                    MAXBSIZE,
2052                                    BUS_SPACE_UNRESTRICTED,
2053                                    BUS_SPACE_MAXSIZE_32BIT,
2054                                    0, &sc->sc_parent_dtag);
2055         if (error) {
2056                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
2057                 return error;
2058         }
2059
2060 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
2061
2062         /*
2063          * Create TX ring DMA stuffs
2064          */
2065         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2066                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2067                                    NULL, NULL,
2068                                    tx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2069                                    0, &sc->sc_txring_dtag);
2070         if (error) {
2071                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
2072                 return error;
2073         }
2074
2075         for (i = 0; i < BWI_TX_NRING; ++i) {
2076                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
2077                                            &sc->sc_tx_rdata[i], tx_ring_sz,
2078                                            TXRX_CTRL(i));
2079                 if (error) {
2080                         device_printf(sc->sc_dev, "%dth TX ring "
2081                                       "DMA alloc failed\n", i);
2082                         return error;
2083                 }
2084         }
2085
2086         /*
2087          * Create RX ring DMA stuffs
2088          */
2089         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2090                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2091                                    NULL, NULL,
2092                                    rx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2093                                    0, &sc->sc_rxring_dtag);
2094         if (error) {
2095                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
2096                 return error;
2097         }
2098
2099         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
2100                                    rx_ring_sz, TXRX_CTRL(0));
2101         if (error) {
2102                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
2103                 return error;
2104         }
2105
2106         if (has_txstats) {
2107                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
2108                 if (error) {
2109                         device_printf(sc->sc_dev,
2110                                       "TX stats DMA alloc failed\n");
2111                         return error;
2112                 }
2113         }
2114
2115 #undef TXRX_CTRL
2116
2117         return bwi_dma_mbuf_create(sc);
2118 }
2119
2120 static void
2121 bwi_dma_free(struct bwi_softc *sc)
2122 {
2123         if (sc->sc_txring_dtag != NULL) {
2124                 int i;
2125
2126                 for (i = 0; i < BWI_TX_NRING; ++i) {
2127                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2128
2129                         if (rd->rdata_desc != NULL) {
2130                                 bus_dmamap_unload(sc->sc_txring_dtag,
2131                                                   rd->rdata_dmap);
2132                                 bus_dmamem_free(sc->sc_txring_dtag,
2133                                                 rd->rdata_desc,
2134                                                 rd->rdata_dmap);
2135                         }
2136                 }
2137                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2138         }
2139
2140         if (sc->sc_rxring_dtag != NULL) {
2141                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2142
2143                 if (rd->rdata_desc != NULL) {
2144                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2145                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2146                                         rd->rdata_dmap);
2147                 }
2148                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2149         }
2150
2151         bwi_dma_txstats_free(sc);
2152         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2153
2154         if (sc->sc_parent_dtag != NULL)
2155                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2156 }
2157
2158 static int
2159 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2160                    struct bwi_ring_data *rd, bus_size_t size,
2161                    uint32_t txrx_ctrl)
2162 {
2163         int error;
2164
2165         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2166                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2167                                  &rd->rdata_dmap);
2168         if (error) {
2169                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2170                 return error;
2171         }
2172
2173         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2174                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2175                                 BUS_DMA_WAITOK);
2176         if (error) {
2177                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2178                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2179                 rd->rdata_desc = NULL;
2180                 return error;
2181         }
2182
2183         rd->rdata_txrx_ctrl = txrx_ctrl;
2184         return 0;
2185 }
2186
2187 static int
2188 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2189                       bus_size_t desc_sz)
2190 {
2191         struct bwi_txstats_data *st;
2192         bus_size_t dma_size;
2193         int error;
2194
2195         st = kmalloc(sizeof(*st), M_DEVBUF, M_WAITOK | M_ZERO);
2196         sc->sc_txstats = st;
2197
2198         /*
2199          * Create TX stats descriptor DMA stuffs
2200          */
2201         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2202
2203         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2204                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2205                                    NULL, NULL,
2206                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2207                                    0, &st->stats_ring_dtag);
2208         if (error) {
2209                 device_printf(sc->sc_dev, "can't create txstats ring "
2210                               "DMA tag\n");
2211                 return error;
2212         }
2213
2214         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2215                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2216                                  &st->stats_ring_dmap);
2217         if (error) {
2218                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2219                               "DMA mem\n");
2220                 bus_dma_tag_destroy(st->stats_ring_dtag);
2221                 st->stats_ring_dtag = NULL;
2222                 return error;
2223         }
2224
2225         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2226                                 st->stats_ring, dma_size,
2227                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2228                                 BUS_DMA_WAITOK);
2229         if (error) {
2230                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2231                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2232                                 st->stats_ring_dmap);
2233                 bus_dma_tag_destroy(st->stats_ring_dtag);
2234                 st->stats_ring_dtag = NULL;
2235                 return error;
2236         }
2237
2238         /*
2239          * Create TX stats DMA stuffs
2240          */
2241         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2242                            BWI_ALIGN);
2243
2244         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_ALIGN, 0,
2245                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2246                                    NULL, NULL,
2247                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2248                                    0, &st->stats_dtag);
2249         if (error) {
2250                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2251                 return error;
2252         }
2253
2254         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2255                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2256                                  &st->stats_dmap);
2257         if (error) {
2258                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2259                 bus_dma_tag_destroy(st->stats_dtag);
2260                 st->stats_dtag = NULL;
2261                 return error;
2262         }
2263
2264         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2265                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2266                                 BUS_DMA_WAITOK);
2267         if (error) {
2268                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2269                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2270                 bus_dma_tag_destroy(st->stats_dtag);
2271                 st->stats_dtag = NULL;
2272                 return error;
2273         }
2274
2275         st->stats_ctrl_base = ctrl_base;
2276         return 0;
2277 }
2278
2279 static void
2280 bwi_dma_txstats_free(struct bwi_softc *sc)
2281 {
2282         struct bwi_txstats_data *st;
2283
2284         if (sc->sc_txstats == NULL)
2285                 return;
2286         st = sc->sc_txstats;
2287
2288         if (st->stats_ring_dtag != NULL) {
2289                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2290                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2291                                 st->stats_ring_dmap);
2292                 bus_dma_tag_destroy(st->stats_ring_dtag);
2293         }
2294
2295         if (st->stats_dtag != NULL) {
2296                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2297                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2298                 bus_dma_tag_destroy(st->stats_dtag);
2299         }
2300
2301         kfree(st, M_DEVBUF);
2302 }
2303
2304 static void
2305 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2306 {
2307         KASSERT(nseg == 1, ("too many segments\n"));
2308         *((bus_addr_t *)arg) = seg->ds_addr;
2309 }
2310
2311 static int
2312 bwi_dma_mbuf_create(struct bwi_softc *sc)
2313 {
2314         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2315         int i, j, k, ntx, error;
2316
2317         /*
2318          * Create TX/RX mbuf DMA tag
2319          */
2320         error = bus_dma_tag_create(sc->sc_parent_dtag, 1, 0,
2321                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2322                                    NULL, NULL, MCLBYTES, 1,
2323                                    BUS_SPACE_MAXSIZE_32BIT,
2324                                    0, &sc->sc_buf_dtag);
2325         if (error) {
2326                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2327                 return error;
2328         }
2329
2330         ntx = 0;
2331
2332         /*
2333          * Create TX mbuf DMA map
2334          */
2335         for (i = 0; i < BWI_TX_NRING; ++i) {
2336                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2337
2338                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2339                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2340                                                   &tbd->tbd_buf[j].tb_dmap);
2341                         if (error) {
2342                                 device_printf(sc->sc_dev, "can't create "
2343                                               "%dth tbd, %dth DMA map\n", i, j);
2344
2345                                 ntx = i;
2346                                 for (k = 0; k < j; ++k) {
2347                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2348                                                 tbd->tbd_buf[k].tb_dmap);
2349                                 }
2350                                 goto fail;
2351                         }
2352                 }
2353         }
2354         ntx = BWI_TX_NRING;
2355
2356         /*
2357          * Create RX mbuf DMA map and a spare DMA map
2358          */
2359         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2360                                   &rbd->rbd_tmp_dmap);
2361         if (error) {
2362                 device_printf(sc->sc_dev,
2363                               "can't create spare RX buf DMA map\n");
2364                 goto fail;
2365         }
2366
2367         for (j = 0; j < BWI_RX_NDESC; ++j) {
2368                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2369                                           &rbd->rbd_buf[j].rb_dmap);
2370                 if (error) {
2371                         device_printf(sc->sc_dev, "can't create %dth "
2372                                       "RX buf DMA map\n", j);
2373
2374                         for (k = 0; k < j; ++k) {
2375                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2376                                         rbd->rbd_buf[j].rb_dmap);
2377                         }
2378                         bus_dmamap_destroy(sc->sc_buf_dtag,
2379                                            rbd->rbd_tmp_dmap);
2380                         goto fail;
2381                 }
2382         }
2383
2384         return 0;
2385 fail:
2386         bwi_dma_mbuf_destroy(sc, ntx, 0);
2387         return error;
2388 }
2389
2390 static void
2391 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2392 {
2393         int i, j;
2394
2395         if (sc->sc_buf_dtag == NULL)
2396                 return;
2397
2398         for (i = 0; i < ntx; ++i) {
2399                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2400
2401                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2402                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2403
2404                         if (tb->tb_mbuf != NULL) {
2405                                 bus_dmamap_unload(sc->sc_buf_dtag,
2406                                                   tb->tb_dmap);
2407                                 m_freem(tb->tb_mbuf);
2408                         }
2409                         if (tb->tb_ni != NULL)
2410                                 ieee80211_free_node(tb->tb_ni);
2411                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2412                 }
2413         }
2414
2415         if (nrx) {
2416                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2417
2418                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2419                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2420                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2421
2422                         if (rb->rb_mbuf != NULL) {
2423                                 bus_dmamap_unload(sc->sc_buf_dtag,
2424                                                   rb->rb_dmap);
2425                                 m_freem(rb->rb_mbuf);
2426                         }
2427                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2428                 }
2429         }
2430
2431         bus_dma_tag_destroy(sc->sc_buf_dtag);
2432         sc->sc_buf_dtag = NULL;
2433 }
2434
2435 static void
2436 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2437 {
2438         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2439 }
2440
2441 static void
2442 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2443 {
2444         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2445 }
2446
2447 static int
2448 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2449 {
2450         struct bwi_ring_data *rd;
2451         struct bwi_txbuf_data *tbd;
2452         uint32_t val, addr_hi, addr_lo;
2453
2454         KKASSERT(ring_idx < BWI_TX_NRING);
2455         rd = &sc->sc_tx_rdata[ring_idx];
2456         tbd = &sc->sc_tx_bdata[ring_idx];
2457
2458         tbd->tbd_idx = 0;
2459         tbd->tbd_used = 0;
2460
2461         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2462         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2463                         BUS_DMASYNC_PREWRITE);
2464
2465         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2466         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2467
2468         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2469               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2470                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2471         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2472
2473         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2474               BWI_TXRX32_CTRL_ENABLE;
2475         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2476
2477         return 0;
2478 }
2479
2480 static void
2481 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2482                        bus_addr_t paddr, int hdr_size, int ndesc)
2483 {
2484         uint32_t val, addr_hi, addr_lo;
2485
2486         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2487         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2488
2489         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2490               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2491                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2492         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2493
2494         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2495               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2496               BWI_TXRX32_CTRL_ENABLE;
2497         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2498
2499         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2500                     (ndesc - 1) * sizeof(struct bwi_desc32));
2501 }
2502
2503 static int
2504 bwi_init_rx_ring32(struct bwi_softc *sc)
2505 {
2506         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2507         int i, error;
2508
2509         sc->sc_rx_bdata.rbd_idx = 0;
2510
2511         for (i = 0; i < BWI_RX_NDESC; ++i) {
2512                 error = bwi_newbuf(sc, i, 1);
2513                 if (error) {
2514                         if_printf(&sc->sc_ic.ic_if,
2515                                   "can't allocate %dth RX buffer\n", i);
2516                         return error;
2517                 }
2518         }
2519         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2520                         BUS_DMASYNC_PREWRITE);
2521
2522         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2523                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2524         return 0;
2525 }
2526
2527 static int
2528 bwi_init_txstats32(struct bwi_softc *sc)
2529 {
2530         struct bwi_txstats_data *st = sc->sc_txstats;
2531         bus_addr_t stats_paddr;
2532         int i;
2533
2534         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2535         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2536
2537         st->stats_idx = 0;
2538
2539         stats_paddr = st->stats_paddr;
2540         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2541                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2542                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2543                 stats_paddr += sizeof(struct bwi_txstats);
2544         }
2545         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2546                         BUS_DMASYNC_PREWRITE);
2547
2548         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2549                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2550         return 0;
2551 }
2552
2553 static void
2554 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2555                     int buf_len)
2556 {
2557         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2558
2559         KKASSERT(buf_idx < BWI_RX_NDESC);
2560         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2561                          paddr, buf_len, 0);
2562 }
2563
2564 static void
2565 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2566                     int buf_idx, bus_addr_t paddr, int buf_len)
2567 {
2568         KKASSERT(buf_idx < BWI_TX_NDESC);
2569         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2570                          paddr, buf_len, 1);
2571 }
2572
2573 static int
2574 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2575 {
2576         /* TODO:64 */
2577         return EOPNOTSUPP;
2578 }
2579
2580 static int
2581 bwi_init_rx_ring64(struct bwi_softc *sc)
2582 {
2583         /* TODO:64 */
2584         return EOPNOTSUPP;
2585 }
2586
2587 static int
2588 bwi_init_txstats64(struct bwi_softc *sc)
2589 {
2590         /* TODO:64 */
2591         return EOPNOTSUPP;
2592 }
2593
2594 static void
2595 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2596                     int buf_len)
2597 {
2598         /* TODO:64 */
2599 }
2600
2601 static void
2602 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2603                     int buf_idx, bus_addr_t paddr, int buf_len)
2604 {
2605         /* TODO:64 */
2606 }
2607
2608 static void
2609 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2610                  bus_size_t mapsz __unused, int error)
2611 {
2612         if (!error) {
2613                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2614                 *((bus_addr_t *)arg) = seg->ds_addr;
2615         }
2616 }
2617
2618 static int
2619 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2620 {
2621         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2622         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2623         struct bwi_rxbuf_hdr *hdr;
2624         bus_dmamap_t map;
2625         bus_addr_t paddr;
2626         struct mbuf *m;
2627         int error;
2628
2629         KKASSERT(buf_idx < BWI_RX_NDESC);
2630
2631         m = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2632         if (m == NULL) {
2633                 error = ENOBUFS;
2634
2635                 /*
2636                  * If the NIC is up and running, we need to:
2637                  * - Clear RX buffer's header.
2638                  * - Restore RX descriptor settings.
2639                  */
2640                 if (init)
2641                         return error;
2642                 else
2643                         goto back;
2644         }
2645         m->m_len = m->m_pkthdr.len = MCLBYTES;
2646
2647         /*
2648          * Try to load RX buf into temporary DMA map
2649          */
2650         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2651                                      bwi_dma_buf_addr, &paddr,
2652                                      init ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2653         if (error) {
2654                 m_freem(m);
2655
2656                 /*
2657                  * See the comment above
2658                  */
2659                 if (init)
2660                         return error;
2661                 else
2662                         goto back;
2663         }
2664
2665         if (!init)
2666                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2667         rxbuf->rb_mbuf = m;
2668         rxbuf->rb_paddr = paddr;
2669
2670         /*
2671          * Swap RX buf's DMA map with the loaded temporary one
2672          */
2673         map = rxbuf->rb_dmap;
2674         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2675         rbd->rbd_tmp_dmap = map;
2676
2677 back:
2678         /*
2679          * Clear RX buf header
2680          */
2681         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2682         bzero(hdr, sizeof(*hdr));
2683         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2684
2685         /*
2686          * Setup RX buf descriptor
2687          */
2688         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2689                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2690         return error;
2691 }
2692
2693 static void
2694 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2695                     const uint8_t *addr)
2696 {
2697         int i;
2698
2699         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2700                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2701
2702         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2703                 uint16_t addr_val;
2704
2705                 addr_val = (uint16_t)addr[i * 2] |
2706                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2707                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2708         }
2709 }
2710
2711 static int
2712 bwi_set_chan(struct bwi_softc *sc, struct ieee80211_channel *c)
2713 {
2714         struct ieee80211com *ic = &sc->sc_ic;
2715 #ifdef INVARIANTS
2716         struct ifnet *ifp = &ic->ic_if;
2717 #endif
2718         struct bwi_mac *mac;
2719         uint16_t flags;
2720         u_int chan;
2721
2722         ASSERT_SERIALIZED(ifp->if_serializer);
2723
2724         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
2725         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2726
2727         chan = ieee80211_chan2ieee(ic, c);
2728
2729         bwi_rf_set_chan(mac, chan, 0);
2730
2731         /*
2732          * Setup radio tap channel freq and flags
2733          */
2734         if (IEEE80211_IS_CHAN_G(c))
2735                 flags = IEEE80211_CHAN_G;
2736         else
2737                 flags = IEEE80211_CHAN_B;
2738
2739         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
2740                 htole16(c->ic_freq);
2741         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
2742                 htole16(flags);
2743
2744         return 0;
2745 }
2746
2747 static void
2748 bwi_next_scan(void *xsc)
2749 {
2750         struct bwi_softc *sc = xsc;
2751         struct ieee80211com *ic = &sc->sc_ic;
2752         struct ifnet *ifp = &ic->ic_if;
2753
2754         lwkt_serialize_enter(ifp->if_serializer);
2755
2756         if (ic->ic_state == IEEE80211_S_SCAN)
2757                 ieee80211_next_scan(ic);
2758
2759         lwkt_serialize_exit(ifp->if_serializer);
2760 }
2761
2762 static int
2763 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2764 {
2765         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2766         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2767         struct ieee80211com *ic = &sc->sc_ic;
2768         struct ifnet *ifp = &ic->ic_if;
2769         int idx, rx_data = 0;
2770
2771         idx = rbd->rbd_idx;
2772         while (idx != end_idx) {
2773                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2774                 struct bwi_rxbuf_hdr *hdr;
2775                 struct ieee80211_frame_min *wh;
2776                 struct ieee80211_node *ni;
2777                 struct mbuf *m;
2778                 const void *plcp;
2779                 uint16_t flags2;
2780                 int buflen, wh_ofs, hdr_extra, rssi, type, rate;
2781
2782                 m = rb->rb_mbuf;
2783                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2784                                 BUS_DMASYNC_POSTREAD);
2785
2786                 if (bwi_newbuf(sc, idx, 0)) {
2787                         ifp->if_ierrors++;
2788                         goto next;
2789                 }
2790
2791                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2792                 flags2 = le16toh(hdr->rxh_flags2);
2793
2794                 hdr_extra = 0;
2795                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2796                         hdr_extra = 2;
2797                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2798
2799                 buflen = le16toh(hdr->rxh_buflen);
2800                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2801                         if_printf(ifp, "short frame %d, hdr_extra %d\n",
2802                                   buflen, hdr_extra);
2803                         ifp->if_ierrors++;
2804                         m_freem(m);
2805                         goto next;
2806                 }
2807
2808                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2809                 rssi = bwi_calc_rssi(sc, hdr);
2810
2811                 m->m_pkthdr.rcvif = ifp;
2812                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2813                 m_adj(m, sizeof(*hdr) + wh_ofs);
2814
2815                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2816                         rate = bwi_ofdm_plcp2rate(plcp);
2817                 else
2818                         rate = bwi_ds_plcp2rate(plcp);
2819
2820                 /* RX radio tap */
2821                 if (sc->sc_drvbpf != NULL)
2822                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi);
2823
2824                 m_adj(m, -IEEE80211_CRC_LEN);
2825
2826                 wh = mtod(m, struct ieee80211_frame_min *);
2827                 ni = ieee80211_find_rxnode(ic, wh);
2828
2829                 type = ieee80211_input(ic, m, ni, rssi - BWI_NOISE_FLOOR,
2830                                        le16toh(hdr->rxh_tsf));
2831                 ieee80211_free_node(ni);
2832
2833                 if (type == IEEE80211_FC0_TYPE_DATA) {
2834                         rx_data = 1;
2835                         sc->sc_rx_rate = rate;
2836                 }
2837 next:
2838                 idx = (idx + 1) % BWI_RX_NDESC;
2839         }
2840
2841         rbd->rbd_idx = idx;
2842         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2843                         BUS_DMASYNC_PREWRITE);
2844         return rx_data;
2845 }
2846
2847 static int
2848 bwi_rxeof32(struct bwi_softc *sc)
2849 {
2850         uint32_t val, rx_ctrl;
2851         int end_idx, rx_data;
2852
2853         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2854
2855         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2856         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2857                   sizeof(struct bwi_desc32);
2858
2859         rx_data = bwi_rxeof(sc, end_idx);
2860
2861         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2862                     end_idx * sizeof(struct bwi_desc32));
2863
2864         return rx_data;
2865 }
2866
2867 static int
2868 bwi_rxeof64(struct bwi_softc *sc)
2869 {
2870         /* TODO:64 */
2871         return 0;
2872 }
2873
2874 static void
2875 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2876 {
2877         int i;
2878
2879         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2880
2881 #define NRETRY 10
2882
2883         for (i = 0; i < NRETRY; ++i) {
2884                 uint32_t status;
2885
2886                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2887                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2888                     BWI_RX32_STATUS_STATE_DISABLED)
2889                         break;
2890
2891                 DELAY(1000);
2892         }
2893         if (i == NRETRY)
2894                 if_printf(&sc->sc_ic.ic_if, "reset rx ring timedout\n");
2895
2896 #undef NRETRY
2897
2898         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2899 }
2900
2901 static void
2902 bwi_free_txstats32(struct bwi_softc *sc)
2903 {
2904         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2905 }
2906
2907 static void
2908 bwi_free_rx_ring32(struct bwi_softc *sc)
2909 {
2910         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2911         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2912         int i;
2913
2914         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2915
2916         for (i = 0; i < BWI_RX_NDESC; ++i) {
2917                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2918
2919                 if (rb->rb_mbuf != NULL) {
2920                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2921                         m_freem(rb->rb_mbuf);
2922                         rb->rb_mbuf = NULL;
2923                 }
2924         }
2925 }
2926
2927 static void
2928 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2929 {
2930         struct bwi_ring_data *rd;
2931         struct bwi_txbuf_data *tbd;
2932         struct ifnet *ifp = &sc->sc_ic.ic_if;
2933         uint32_t state, val;
2934         int i;
2935
2936         KKASSERT(ring_idx < BWI_TX_NRING);
2937         rd = &sc->sc_tx_rdata[ring_idx];
2938         tbd = &sc->sc_tx_bdata[ring_idx];
2939
2940 #define NRETRY 10
2941
2942         for (i = 0; i < NRETRY; ++i) {
2943                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2944                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2945                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2946                     state == BWI_TX32_STATUS_STATE_IDLE ||
2947                     state == BWI_TX32_STATUS_STATE_STOPPED)
2948                         break;
2949
2950                 DELAY(1000);
2951         }
2952         if (i == NRETRY) {
2953                 if_printf(ifp, "wait for TX ring(%d) stable timed out\n",
2954                           ring_idx);
2955         }
2956
2957         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2958         for (i = 0; i < NRETRY; ++i) {
2959                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2960                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2961                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2962                         break;
2963
2964                 DELAY(1000);
2965         }
2966         if (i == NRETRY)
2967                 if_printf(ifp, "reset TX ring (%d) timed out\n", ring_idx);
2968
2969 #undef NRETRY
2970
2971         DELAY(1000);
2972
2973         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2974
2975         for (i = 0; i < BWI_TX_NDESC; ++i) {
2976                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2977
2978                 if (tb->tb_mbuf != NULL) {
2979                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2980                         m_freem(tb->tb_mbuf);
2981                         tb->tb_mbuf = NULL;
2982                 }
2983                 if (tb->tb_ni != NULL) {
2984                         ieee80211_free_node(tb->tb_ni);
2985                         tb->tb_ni = NULL;
2986                 }
2987         }
2988 }
2989
2990 static void
2991 bwi_free_txstats64(struct bwi_softc *sc)
2992 {
2993         /* TODO:64 */
2994 }
2995
2996 static void
2997 bwi_free_rx_ring64(struct bwi_softc *sc)
2998 {
2999         /* TODO:64 */
3000 }
3001
3002 static void
3003 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
3004 {
3005         /* TODO:64 */
3006 }
3007
3008 static int
3009 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
3010           struct ieee80211_node **ni0, int mgt_pkt)
3011 {
3012         struct ieee80211com *ic = &sc->sc_ic;
3013         struct ieee80211_node *ni = *ni0;
3014         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3015         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3016         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3017         struct bwi_mac *mac;
3018         struct bwi_txbuf_hdr *hdr;
3019         struct ieee80211_frame *wh;
3020         uint8_t rate, rate_fb;
3021         uint32_t mac_ctrl;
3022         uint16_t phy_ctrl;
3023         bus_addr_t paddr;
3024         int pkt_len, error, mcast_pkt = 0;
3025 #if 0
3026         const uint8_t *p;
3027         int i;
3028 #endif
3029
3030         KKASSERT(ni != NULL);
3031         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3032         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3033
3034         wh = mtod(m, struct ieee80211_frame *);
3035
3036         /* Get 802.11 frame len before prepending TX header */
3037         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3038
3039         /*
3040          * Find TX rate
3041          */
3042         bzero(tb->tb_rateidx, sizeof(tb->tb_rateidx));
3043         if (!mgt_pkt) {
3044                 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
3045                         int idx;
3046
3047                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3048                                         ic->ic_fixed_rate);
3049
3050                         if (ic->ic_fixed_rate >= 1)
3051                                 idx = ic->ic_fixed_rate - 1;
3052                         else
3053                                 idx = 0;
3054                         rate_fb = IEEE80211_RS_RATE(&ni->ni_rates, idx);
3055                 } else {
3056                         tb->tb_rateidx_cnt = ieee80211_ratectl_findrate(ni,
3057                                 m->m_pkthdr.len, tb->tb_rateidx, BWI_NTXRATE);
3058
3059                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3060                                                  tb->tb_rateidx[0]);
3061                         if (tb->tb_rateidx_cnt == BWI_NTXRATE) {
3062                                 rate_fb = IEEE80211_RS_RATE(&ni->ni_rates,
3063                                                             tb->tb_rateidx[1]);
3064                         } else {
3065                                 rate_fb = rate;
3066                         }
3067                         tb->tb_buflen = m->m_pkthdr.len;
3068                 }
3069         } else {
3070                 /* Fixed at 1Mbits/s for mgt frames */
3071                 rate = rate_fb = (1 * 2);
3072         }
3073
3074         if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
3075                 rate = rate_fb = ic->ic_mcast_rate;
3076                 mcast_pkt = 1;
3077         }
3078
3079         if (rate == 0 || rate_fb == 0) {
3080                 /* XXX this should not happen */
3081                 if_printf(&ic->ic_if, "invalid rate %u or fallback rate %u",
3082                           rate, rate_fb);
3083                 rate = rate_fb = (1 * 2); /* Force 1Mbits/s */
3084         }
3085         sc->sc_tx_rate = rate;
3086
3087         /*
3088          * TX radio tap
3089          */
3090         if (sc->sc_drvbpf != NULL) {
3091                 sc->sc_tx_th.wt_flags = 0;
3092                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3093                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3094                 if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_DS &&
3095                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3096                     rate != (1 * 2)) {
3097                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3098                 }
3099                 sc->sc_tx_th.wt_rate = rate;
3100
3101                 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_tx_th, sc->sc_tx_th_len);
3102         }
3103
3104         /*
3105          * Setup the embedded TX header
3106          */
3107         M_PREPEND(m, sizeof(*hdr), MB_DONTWAIT);
3108         if (m == NULL) {
3109                 if_printf(&ic->ic_if, "prepend TX header failed\n");
3110                 return ENOBUFS;
3111         }
3112         hdr = mtod(m, struct bwi_txbuf_hdr *);
3113
3114         bzero(hdr, sizeof(*hdr));
3115
3116         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3117         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3118
3119         if (!mcast_pkt) {
3120                 uint16_t dur;
3121                 uint8_t ack_rate;
3122
3123                 ack_rate = ieee80211_ack_rate(ni, rate_fb);
3124                 dur = ieee80211_txtime(ni,
3125                 sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN,
3126                 ack_rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
3127
3128                 hdr->txh_fb_duration = htole16(dur);
3129         }
3130
3131         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3132                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3133
3134         bwi_plcp_header(hdr->txh_plcp, pkt_len, rate);
3135         bwi_plcp_header(hdr->txh_fb_plcp, pkt_len, rate_fb);
3136
3137         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3138                              BWI_TXH_PHY_C_ANTMODE_MASK);
3139         if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_OFDM)
3140                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3141         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3142                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3143
3144         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3145         if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
3146                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3147         if (ieee80211_rate2modtype(rate_fb) == IEEE80211_MODTYPE_OFDM)
3148                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3149
3150         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3151         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3152
3153         /* Catch any further usage */
3154         hdr = NULL;
3155         wh = NULL;
3156
3157         /* DMA load */
3158         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3159                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3160         if (error && error != EFBIG) {
3161                 if_printf(&ic->ic_if, "can't load TX buffer (1) %d\n", error);
3162                 goto back;
3163         }
3164
3165         if (error) {    /* error == EFBIG */
3166                 struct mbuf *m_new;
3167
3168                 m_new = m_defrag(m, MB_DONTWAIT);
3169                 if (m_new == NULL) {
3170                         if_printf(&ic->ic_if, "can't defrag TX buffer\n");
3171                         error = ENOBUFS;
3172                         goto back;
3173                 } else {
3174                         m = m_new;
3175                 }
3176
3177                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3178                                              bwi_dma_buf_addr, &paddr,
3179                                              BUS_DMA_NOWAIT);
3180                 if (error) {
3181                         if_printf(&ic->ic_if, "can't load TX buffer (2) %d\n",
3182                                   error);
3183                         goto back;
3184                 }
3185         }
3186         error = 0;
3187
3188         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3189
3190         if (mgt_pkt || mcast_pkt) {
3191                 /* Don't involve mcast/mgt packets into TX rate control */
3192                 ieee80211_free_node(ni);
3193                 *ni0 = ni = NULL;
3194         }
3195         tb->tb_mbuf = m;
3196         tb->tb_ni = ni;
3197
3198 #if 0
3199         p = mtod(m, const uint8_t *);
3200         for (i = 0; i < m->m_pkthdr.len; ++i) {
3201                 if (i != 0 && i % 8 == 0)
3202                         kprintf("\n");
3203                 kprintf("%02x ", p[i]);
3204         }
3205         kprintf("\n");
3206 #endif
3207
3208         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3209                 idx, pkt_len, m->m_pkthdr.len);
3210
3211         /* Setup TX descriptor */
3212         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3213         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3214                         BUS_DMASYNC_PREWRITE);
3215
3216         /* Kick start */
3217         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3218
3219 back:
3220         if (error)
3221                 m_freem(m);
3222         return error;
3223 }
3224
3225 static void
3226 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3227 {
3228         idx = (idx + 1) % BWI_TX_NDESC;
3229         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3230                     idx * sizeof(struct bwi_desc32));
3231 }
3232
3233 static void
3234 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3235 {
3236         /* TODO:64 */
3237 }
3238
3239 static void
3240 bwi_txeof_status32(struct bwi_softc *sc)
3241 {
3242         struct ifnet *ifp = &sc->sc_ic.ic_if;
3243         uint32_t val, ctrl_base;
3244         int end_idx;
3245
3246         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3247
3248         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3249         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3250                   sizeof(struct bwi_desc32);
3251
3252         bwi_txeof_status(sc, end_idx);
3253
3254         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3255                     end_idx * sizeof(struct bwi_desc32));
3256
3257         if ((ifp->if_flags & IFF_OACTIVE) == 0)
3258                 ifp->if_start(ifp);
3259 }
3260
3261 static void
3262 bwi_txeof_status64(struct bwi_softc *sc)
3263 {
3264         /* TODO:64 */
3265 }
3266
3267 static void
3268 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3269 {
3270         struct ifnet *ifp = &sc->sc_ic.ic_if;
3271         struct bwi_txbuf_data *tbd;
3272         struct bwi_txbuf *tb;
3273         int ring_idx, buf_idx;
3274
3275         if (tx_id == 0) {
3276                 if_printf(ifp, "zero tx id\n");
3277                 return;
3278         }
3279
3280         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3281         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3282
3283         KKASSERT(ring_idx == BWI_TX_DATA_RING);
3284         KKASSERT(buf_idx < BWI_TX_NDESC);
3285
3286         tbd = &sc->sc_tx_bdata[ring_idx];
3287         KKASSERT(tbd->tbd_used > 0);
3288         tbd->tbd_used--;
3289
3290         tb = &tbd->tbd_buf[buf_idx];
3291
3292         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3293                 "acked %d, data_txcnt %d, ni %p\n",
3294                 buf_idx, acked, data_txcnt, tb->tb_ni);
3295
3296         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3297         m_freem(tb->tb_mbuf);
3298         tb->tb_mbuf = NULL;
3299
3300         if (tb->tb_ni != NULL) {
3301                 struct ieee80211_ratectl_res res[BWI_NTXRATE];
3302                 int res_len, retry;
3303
3304                 if (data_txcnt <= BWI_SHRETRY_FB || tb->tb_rateidx_cnt == 1) {
3305                         res_len = 1;
3306                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3307                         res[0].rc_res_tries = data_txcnt;
3308                 } else {
3309                         res_len = BWI_NTXRATE;
3310                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3311                         res[0].rc_res_tries = BWI_SHRETRY_FB;
3312                         res[1].rc_res_rateidx = tb->tb_rateidx[1];
3313                         res[1].rc_res_tries = data_txcnt - BWI_SHRETRY_FB;
3314                 }
3315
3316                 if (acked)
3317                         retry = data_txcnt > 0 ? data_txcnt - 1 : 0;
3318                 else
3319                         retry = data_txcnt;
3320
3321                 ieee80211_ratectl_tx_complete(tb->tb_ni, tb->tb_buflen,
3322                         res, res_len, retry, 0, !acked);
3323
3324                 ieee80211_free_node(tb->tb_ni);
3325                 tb->tb_ni = NULL;
3326         }
3327
3328         if (tbd->tbd_used == 0)
3329                 sc->sc_tx_timer = 0;
3330
3331         ifp->if_flags &= ~IFF_OACTIVE;
3332 }
3333
3334 static void
3335 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3336 {
3337         struct bwi_txstats_data *st = sc->sc_txstats;
3338         int idx;
3339
3340         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3341
3342         idx = st->stats_idx;
3343         while (idx != end_idx) {
3344                 const struct bwi_txstats *stats = &st->stats[idx];
3345
3346                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3347                         int data_txcnt;
3348
3349                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3350                                                 BWI_TXS_TXCNT_DATA);
3351                         _bwi_txeof(sc, le16toh(stats->txs_id),
3352                                    stats->txs_flags & BWI_TXS_F_ACKED,
3353                                    data_txcnt);
3354                 }
3355                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3356         }
3357         st->stats_idx = idx;
3358 }
3359
3360 static void
3361 bwi_txeof(struct bwi_softc *sc)
3362 {
3363         struct ifnet *ifp = &sc->sc_ic.ic_if;
3364
3365         for (;;) {
3366                 uint32_t tx_status0, tx_status1;
3367                 uint16_t tx_id;
3368                 int data_txcnt;
3369
3370                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3371                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3372                         break;
3373                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3374
3375                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3376                 data_txcnt = __SHIFTOUT(tx_status0,
3377                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3378
3379                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3380                         continue;
3381
3382                 _bwi_txeof(sc, tx_id, tx_status0 & BWI_TXSTATUS0_ACKED,
3383                            data_txcnt);
3384         }
3385
3386         if ((ifp->if_flags & IFF_OACTIVE) == 0)
3387                 ifp->if_start(ifp);
3388 }
3389
3390 static int
3391 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3392 {
3393         bwi_power_on(sc, 1);
3394         return bwi_set_clock_mode(sc, clk_mode);
3395 }
3396
3397 static void
3398 bwi_bbp_power_off(struct bwi_softc *sc)
3399 {
3400         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3401         bwi_power_off(sc, 1);
3402 }
3403
3404 static int
3405 bwi_get_pwron_delay(struct bwi_softc *sc)
3406 {
3407         struct bwi_regwin *com, *old;
3408         struct bwi_clock_freq freq;
3409         uint32_t val;
3410         int error;
3411
3412         com = &sc->sc_com_regwin;
3413         KKASSERT(BWI_REGWIN_EXIST(com));
3414
3415         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3416                 return 0;
3417
3418         error = bwi_regwin_switch(sc, com, &old);
3419         if (error)
3420                 return error;
3421
3422         bwi_get_clock_freq(sc, &freq);
3423
3424         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3425         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3426         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3427
3428         return bwi_regwin_switch(sc, old, NULL);
3429 }
3430
3431 static int
3432 bwi_bus_attach(struct bwi_softc *sc)
3433 {
3434         struct bwi_regwin *bus, *old;
3435         int error;
3436
3437         bus = &sc->sc_bus_regwin;
3438
3439         error = bwi_regwin_switch(sc, bus, &old);
3440         if (error)
3441                 return error;
3442
3443         if (!bwi_regwin_is_enabled(sc, bus))
3444                 bwi_regwin_enable(sc, bus, 0);
3445
3446         /* Disable interripts */
3447         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3448
3449         return bwi_regwin_switch(sc, old, NULL);
3450 }
3451
3452 static const char *
3453 bwi_regwin_name(const struct bwi_regwin *rw)
3454 {
3455         switch (rw->rw_type) {
3456         case BWI_REGWIN_T_COM:
3457                 return "COM";
3458         case BWI_REGWIN_T_BUSPCI:
3459                 return "PCI";
3460         case BWI_REGWIN_T_MAC:
3461                 return "MAC";
3462         case BWI_REGWIN_T_BUSPCIE:
3463                 return "PCIE";
3464         }
3465         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3466         return NULL;
3467 }
3468
3469 static uint32_t
3470 bwi_regwin_disable_bits(struct bwi_softc *sc)
3471 {
3472         uint32_t busrev;
3473
3474         /* XXX cache this */
3475         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3476         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3477                 "bus rev %u\n", busrev);
3478
3479         if (busrev == BWI_BUSREV_0)
3480                 return BWI_STATE_LO_DISABLE1;
3481         else if (busrev == BWI_BUSREV_1)
3482                 return BWI_STATE_LO_DISABLE2;
3483         else
3484                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3485 }
3486
3487 int
3488 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3489 {
3490         uint32_t val, disable_bits;
3491
3492         disable_bits = bwi_regwin_disable_bits(sc);
3493         val = CSR_READ_4(sc, BWI_STATE_LO);
3494
3495         if ((val & (BWI_STATE_LO_CLOCK |
3496                     BWI_STATE_LO_RESET |
3497                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3498                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3499                         bwi_regwin_name(rw));
3500                 return 1;
3501         } else {
3502                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3503                         bwi_regwin_name(rw));
3504                 return 0;
3505         }
3506 }
3507
3508 void
3509 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3510 {
3511         uint32_t state_lo, disable_bits;
3512         int i;
3513
3514         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3515
3516         /*
3517          * If current regwin is in 'reset' state, it was already disabled.
3518          */
3519         if (state_lo & BWI_STATE_LO_RESET) {
3520                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3521                         "%s was already disabled\n", bwi_regwin_name(rw));
3522                 return;
3523         }
3524
3525         disable_bits = bwi_regwin_disable_bits(sc);
3526
3527         /*
3528          * Disable normal clock
3529          */
3530         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3531         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3532
3533         /*
3534          * Wait until normal clock is disabled
3535          */
3536 #define NRETRY  1000
3537         for (i = 0; i < NRETRY; ++i) {
3538                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3539                 if (state_lo & disable_bits)
3540                         break;
3541                 DELAY(10);
3542         }
3543         if (i == NRETRY) {
3544                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3545                               bwi_regwin_name(rw));
3546         }
3547
3548         for (i = 0; i < NRETRY; ++i) {
3549                 uint32_t state_hi;
3550
3551                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3552                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3553                         break;
3554                 DELAY(10);
3555         }
3556         if (i == NRETRY) {
3557                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3558                               bwi_regwin_name(rw));
3559         }
3560 #undef NRETRY
3561
3562         /*
3563          * Reset and disable regwin with gated clock
3564          */
3565         state_lo = BWI_STATE_LO_RESET | disable_bits |
3566                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3567                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3568         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3569
3570         /* Flush pending bus write */
3571         CSR_READ_4(sc, BWI_STATE_LO);
3572         DELAY(1);
3573
3574         /* Reset and disable regwin */
3575         state_lo = BWI_STATE_LO_RESET | disable_bits |
3576                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3577         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3578
3579         /* Flush pending bus write */
3580         CSR_READ_4(sc, BWI_STATE_LO);
3581         DELAY(1);
3582 }
3583
3584 void
3585 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3586 {
3587         uint32_t state_lo, state_hi, imstate;
3588
3589         bwi_regwin_disable(sc, rw, flags);
3590
3591         /* Reset regwin with gated clock */
3592         state_lo = BWI_STATE_LO_RESET |
3593                    BWI_STATE_LO_CLOCK |
3594                    BWI_STATE_LO_GATED_CLOCK |
3595                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3596         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3597
3598         /* Flush pending bus write */
3599         CSR_READ_4(sc, BWI_STATE_LO);
3600         DELAY(1);
3601
3602         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3603         if (state_hi & BWI_STATE_HI_SERROR)
3604                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3605
3606         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3607         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3608                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3609                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3610         }
3611
3612         /* Enable regwin with gated clock */
3613         state_lo = BWI_STATE_LO_CLOCK |
3614                    BWI_STATE_LO_GATED_CLOCK |
3615                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3616         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3617
3618         /* Flush pending bus write */
3619         CSR_READ_4(sc, BWI_STATE_LO);
3620         DELAY(1);
3621
3622         /* Enable regwin with normal clock */
3623         state_lo = BWI_STATE_LO_CLOCK |
3624                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3625         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3626
3627         /* Flush pending bus write */
3628         CSR_READ_4(sc, BWI_STATE_LO);
3629         DELAY(1);
3630 }
3631
3632 static void
3633 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3634 {
3635         struct ieee80211com *ic = &sc->sc_ic;
3636         struct bwi_mac *mac;
3637         struct bwi_myaddr_bssid buf;
3638         const uint8_t *p;
3639         uint32_t val;
3640         int n, i;
3641
3642         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3643         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3644
3645         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3646
3647         bcopy(ic->ic_myaddr, buf.myaddr, sizeof(buf.myaddr));
3648         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3649
3650         n = sizeof(buf) / sizeof(val);
3651         p = (const uint8_t *)&buf;
3652         for (i = 0; i < n; ++i) {
3653                 int j;
3654
3655                 val = 0;
3656                 for (j = 0; j < sizeof(val); ++j)
3657                         val |= ((uint32_t)(*p++)) << (j * 8);
3658
3659                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3660         }
3661 }
3662
3663 static void
3664 bwi_updateslot(struct ifnet *ifp)
3665 {
3666         struct bwi_softc *sc = ifp->if_softc;
3667         struct ieee80211com *ic = &sc->sc_ic;
3668         struct bwi_mac *mac;
3669
3670         if ((ifp->if_flags & IFF_RUNNING) == 0)
3671                 return;
3672
3673         ASSERT_SERIALIZED(ifp->if_serializer);
3674
3675         DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3676
3677         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3678         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3679
3680         bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3681 }
3682
3683 static void
3684 bwi_calibrate(void *xsc)
3685 {
3686         struct bwi_softc *sc = xsc;
3687         struct ieee80211com *ic = &sc->sc_ic;
3688         struct ifnet *ifp = &ic->ic_if;
3689
3690         lwkt_serialize_enter(ifp->if_serializer);
3691
3692         if (ic->ic_state == IEEE80211_S_RUN) {
3693                 struct bwi_mac *mac;
3694
3695                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3696                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3697
3698                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
3699                         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3700                         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3701                 }
3702
3703                 /* XXX 15 seconds */
3704                 callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3705         }
3706
3707         lwkt_serialize_exit(ifp->if_serializer);
3708 }
3709
3710 static int
3711 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3712 {
3713         struct bwi_mac *mac;
3714
3715         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3716         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3717
3718         return bwi_rf_calc_rssi(mac, hdr);
3719 }
3720
3721 static void
3722 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3723                 struct bwi_rxbuf_hdr *hdr, const void *plcp,
3724                 int rate, int rssi)
3725 {
3726         const struct ieee80211_frame_min *wh;
3727
3728         KKASSERT(sc->sc_drvbpf != NULL);
3729
3730         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3731         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3732                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3733
3734         wh = mtod(m, const struct ieee80211_frame_min *);
3735         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3736                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3737
3738         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3739         sc->sc_rx_th.wr_rate = rate;
3740         sc->sc_rx_th.wr_antsignal = rssi;
3741         sc->sc_rx_th.wr_antnoise = BWI_NOISE_FLOOR;
3742
3743         bpf_ptap(sc->sc_drvbpf, m, &sc->sc_rx_th, sc->sc_rx_th_len);
3744 }
3745
3746 static void
3747 bwi_led_attach(struct bwi_softc *sc)
3748 {
3749         const uint8_t *led_act = NULL;
3750         uint16_t gpio, val[BWI_LED_MAX];
3751         int i;
3752
3753 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
3754
3755         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
3756                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3757                         led_act = bwi_vendor_led_act[i].led_act;
3758                         break;
3759                 }
3760         }
3761         if (led_act == NULL)
3762                 led_act = bwi_default_led_act;
3763
3764 #undef N
3765
3766         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3767         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3768         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3769
3770         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3771         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3772         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3773
3774         for (i = 0; i < BWI_LED_MAX; ++i) {
3775                 struct bwi_led *led = &sc->sc_leds[i];
3776
3777                 if (val[i] == 0xff) {
3778                         led->l_act = led_act[i];
3779                 } else {
3780                         if (val[i] & BWI_LED_ACT_LOW)
3781                                 led->l_flags |= BWI_LED_F_ACTLOW;
3782                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3783                 }
3784                 led->l_mask = (1 << i);
3785
3786                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3787                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3788                     led->l_act == BWI_LED_ACT_BLINK) {
3789                         led->l_flags |= BWI_LED_F_BLINK;
3790                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3791                                 led->l_flags |= BWI_LED_F_POLLABLE;
3792                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3793                                 led->l_flags |= BWI_LED_F_SLOW;
3794
3795                         if (sc->sc_blink_led == NULL) {
3796                                 sc->sc_blink_led = led;
3797                                 if (led->l_flags & BWI_LED_F_SLOW)
3798                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3799                         }
3800                 }
3801
3802                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3803                         "%dth led, act %d, lowact %d\n", i,
3804                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3805         }
3806         callout_init(&sc->sc_led_blink_ch);
3807 }
3808
3809 static __inline uint16_t
3810 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3811 {
3812         if (led->l_flags & BWI_LED_F_ACTLOW)
3813                 on = !on;
3814         if (on)
3815                 val |= led->l_mask;
3816         else
3817                 val &= ~led->l_mask;
3818         return val;
3819 }
3820
3821 static void
3822 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3823 {
3824         struct ieee80211com *ic = &sc->sc_ic;
3825         uint16_t val;
3826         int i;
3827
3828         if (nstate == IEEE80211_S_INIT) {
3829                 callout_stop(&sc->sc_led_blink_ch);
3830                 sc->sc_led_blinking = 0;
3831         }
3832
3833         if ((ic->ic_if.if_flags & IFF_RUNNING) == 0)
3834                 return;
3835
3836         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3837         for (i = 0; i < BWI_LED_MAX; ++i) {
3838                 struct bwi_led *led = &sc->sc_leds[i];
3839                 int on;
3840
3841                 if (led->l_act == BWI_LED_ACT_UNKN ||
3842                     led->l_act == BWI_LED_ACT_NULL)
3843                         continue;
3844
3845                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3846                     nstate != IEEE80211_S_INIT)
3847                         continue;
3848
3849                 switch (led->l_act) {
3850                 case BWI_LED_ACT_ON:            /* Always on */
3851                         on = 1;
3852                         break;
3853                 case BWI_LED_ACT_OFF:           /* Always off */
3854                 case BWI_LED_ACT_5GHZ:          /* TODO: 11A */
3855                         on = 0;
3856                         break;
3857                 default:
3858                         on = 1;
3859                         switch (nstate) {
3860                         case IEEE80211_S_INIT:
3861                                 on = 0;
3862                                 break;
3863                         case IEEE80211_S_RUN:
3864                                 if (led->l_act == BWI_LED_ACT_11G &&
3865                                     ic->ic_curmode != IEEE80211_MODE_11G)
3866                                         on = 0;
3867                                 break;
3868                         default:
3869                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3870                                         on = 0;
3871                                 break;
3872                         }
3873                         break;
3874                 }
3875
3876                 val = bwi_led_onoff(led, val, on);
3877         }
3878         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3879 }
3880
3881 static void
3882 bwi_led_event(struct bwi_softc *sc, int event)
3883 {
3884         struct bwi_led *led = sc->sc_blink_led;
3885         int rate;
3886
3887         if (event == BWI_LED_EVENT_POLL) {
3888                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3889                         return;
3890                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3891                         return;
3892         }
3893
3894         sc->sc_led_ticks = ticks;
3895         if (sc->sc_led_blinking)
3896                 return;
3897
3898         switch (event) {
3899         case BWI_LED_EVENT_RX:
3900                 rate = sc->sc_rx_rate;
3901                 break;
3902         case BWI_LED_EVENT_TX:
3903                 rate = sc->sc_tx_rate;
3904                 break;
3905         case BWI_LED_EVENT_POLL:
3906                 rate = 0;
3907                 break;
3908         default:
3909                 panic("unknown LED event %d\n", event);
3910                 break;
3911         }
3912         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3913                             bwi_led_duration[rate].off_dur);
3914 }
3915
3916 static void
3917 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
3918 {
3919         struct bwi_led *led = sc->sc_blink_led;
3920         uint16_t val;
3921
3922         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3923         val = bwi_led_onoff(led, val, 1);
3924         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3925
3926         if (led->l_flags & BWI_LED_F_SLOW) {
3927                 BWI_LED_SLOWDOWN(on_dur);
3928                 BWI_LED_SLOWDOWN(off_dur);
3929         }
3930
3931         sc->sc_led_blinking = 1;
3932         sc->sc_led_blink_offdur = off_dur;
3933
3934         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
3935 }
3936
3937 static void
3938 bwi_led_blink_next(void *xsc)
3939 {
3940         struct bwi_softc *sc = xsc;
3941         uint16_t val;
3942
3943         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3944         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
3945         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3946
3947         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
3948                       bwi_led_blink_end, sc);
3949 }
3950
3951 static void
3952 bwi_led_blink_end(void *xsc)
3953 {
3954         struct bwi_softc *sc = xsc;
3955
3956         sc->sc_led_blinking = 0;
3957 }
3958
3959 static void *
3960 bwi_ratectl_attach(struct ieee80211com *ic, u_int rc)
3961 {
3962         struct bwi_softc *sc = ic->ic_if.if_softc;
3963
3964         switch (rc) {
3965         case IEEE80211_RATECTL_ONOE:
3966                 return &sc->sc_onoe_param;
3967         case IEEE80211_RATECTL_NONE:
3968                 /* This could only happen during detaching */
3969                 return NULL;
3970         default:
3971                 panic("unknown rate control algo %u\n", rc);
3972                 return NULL;
3973         }
3974 }