sys/dev/netif/bwi/if_bwi.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/bitops.h>
  37 #include <sys/endian.h>
  38 #include <sys/kernel.h>
  39 #include <sys/bus.h>
  40 #include <sys/interrupt.h>
  41 #include <sys/malloc.h>
  42 #include <sys/proc.h>
  43 #include <sys/rman.h>
  44 #include <sys/serialize.h>
  45 #include <sys/socket.h>
  46 #include <sys/sockio.h>
  47 #include <sys/sysctl.h>
  48
  49 #include <net/ethernet.h>
  50 #include <net/if.h>
  51 #include <net/bpf.h>
  52 #include <net/if_arp.h>
  53 #include <net/if_dl.h>
  54 #include <net/if_media.h>
  55 #include <net/ifq_var.h>
  56
  57 #include <netproto/802_11/ieee80211_radiotap.h>
  58 #include <netproto/802_11/ieee80211_var.h>
  59 #include <netproto/802_11/wlan_ratectl/onoe/ieee80211_onoe_param.h>
  60
  61 #include <bus/pci/pcireg.h>
  62 #include <bus/pci/pcivar.h>
  63 #include "pcidevs.h"
  64
  65 #include <dev/netif/bwi/if_bwireg.h>
  66 #include <dev/netif/bwi/if_bwivar.h>
  67 #include <dev/netif/bwi/bwimac.h>
  68 #include <dev/netif/bwi/bwirf.h>
  69
  70 struct bwi_clock_freq {
  71         u_int           clkfreq_min;
  72         u_int           clkfreq_max;
  73 };
  74
  75 struct bwi_myaddr_bssid {
  76         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  77         uint8_t         bssid[IEEE80211_ADDR_LEN];
  78 } __packed;
  79
  80 static int      bwi_probe(device_t);
  81 static int      bwi_attach(device_t);
  82 static int      bwi_detach(device_t);
  83 static int      bwi_shutdown(device_t);
  84
  85 static void     bwi_init(void *);
  86 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
  87 static void     bwi_start(struct ifnet *, struct ifaltq_subque *);
  88 static void     bwi_watchdog(struct ifnet *);
  89 static int      bwi_newstate(struct ieee80211com *, enum ieee80211_state, int);
  90 static void     bwi_updateslot(struct ifnet *);
  91 static int      bwi_media_change(struct ifnet *);
  92 static void     *bwi_ratectl_attach(struct ieee80211com *, u_int);
  93
  94 static void     bwi_next_scan(void *);
  95 static void     bwi_calibrate(void *);
  96
  97 static void     bwi_newstate_begin(struct bwi_softc *, enum ieee80211_state);
  98 static void     bwi_init_statechg(struct bwi_softc *, int);
  99 static int      bwi_stop(struct bwi_softc *, int);
 100 static int      bwi_newbuf(struct bwi_softc *, int, int);
 101 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 102                           struct ieee80211_node **, int);
 103
 104 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 105                                        bus_addr_t, int, int);
 106 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 107
 108 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 109 static int      bwi_init_rx_ring32(struct bwi_softc *);
 110 static int      bwi_init_txstats32(struct bwi_softc *);
 111 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 112 static void     bwi_free_rx_ring32(struct bwi_softc *);
 113 static void     bwi_free_txstats32(struct bwi_softc *);
 114 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 115 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 116                                     int, bus_addr_t, int);
 117 static int      bwi_rxeof32(struct bwi_softc *);
 118 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 119 static void     bwi_txeof_status32(struct bwi_softc *);
 120
 121 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 122 static int      bwi_init_rx_ring64(struct bwi_softc *);
 123 static int      bwi_init_txstats64(struct bwi_softc *);
 124 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 125 static void     bwi_free_rx_ring64(struct bwi_softc *);
 126 static void     bwi_free_txstats64(struct bwi_softc *);
 127 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 128 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 129                                     int, bus_addr_t, int);
 130 static int      bwi_rxeof64(struct bwi_softc *);
 131 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 132 static void     bwi_txeof_status64(struct bwi_softc *);
 133
 134 static void     bwi_intr(void *);
 135 static int      bwi_rxeof(struct bwi_softc *, int);
 136 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 137 static void     bwi_txeof(struct bwi_softc *);
 138 static void     bwi_txeof_status(struct bwi_softc *, int);
 139 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 140 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 141 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 142 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 143                                 struct bwi_rxbuf_hdr *, const void *, int, int);
 144
 145 static int      bwi_dma_alloc(struct bwi_softc *);
 146 static void     bwi_dma_free(struct bwi_softc *);
 147 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 148                                    struct bwi_ring_data *, bus_size_t,
 149                                    uint32_t);
 150 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 151 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 152 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 153 static void     bwi_dma_txstats_free(struct bwi_softc *);
 154 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 155 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 156                                  bus_size_t, int);
 157
 158 static void     bwi_power_on(struct bwi_softc *, int);
 159 static int      bwi_power_off(struct bwi_softc *, int);
 160 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 161 static int      bwi_set_clock_delay(struct bwi_softc *);
 162 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 163 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 164 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 165                                     const uint8_t *);
 166 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 167 static int      bwi_set_chan(struct bwi_softc *, struct ieee80211_channel *);
 168
 169 static void     bwi_get_card_flags(struct bwi_softc *);
 170 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 171
 172 static int      bwi_bus_attach(struct bwi_softc *);
 173 static int      bwi_bbp_attach(struct bwi_softc *);
 174 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 175 static void     bwi_bbp_power_off(struct bwi_softc *);
 176
 177 static const char *bwi_regwin_name(const struct bwi_regwin *);
 178 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 179 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 180 static int      bwi_regwin_select(struct bwi_softc *, int);
 181
 182 static void     bwi_led_attach(struct bwi_softc *);
 183 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 184 static void     bwi_led_event(struct bwi_softc *, int);
 185 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 186 static void     bwi_led_blink_next(void *);
 187 static void     bwi_led_blink_end(void *);
 188
 189 static const struct bwi_dev {
 190         uint16_t        vid;
 191         uint16_t        did;
 192         const char      *desc;
 193 } bwi_devices[] = {
 194         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4301,
 195           "Broadcom BCM4301 802.11 Wireless Lan" },
 196
 197         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307,
 198           "Broadcom BCM4307 802.11 Wireless Lan" },
 199
 200         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4311,
 201           "Broadcom BCM4311 802.11 Wireless Lan" },
 202
 203         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4312,
 204           "Broadcom BCM4312 802.11 Wireless Lan" },
 205
 206         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_1,
 207           "Broadcom BCM4306 802.11 Wireless Lan" },
 208
 209         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2,
 210           "Broadcom BCM4306 802.11 Wireless Lan" },
 211
 212         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_3,
 213           "Broadcom BCM4306 802.11 Wireless Lan" },
 214
 215         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309,
 216           "Broadcom BCM4309 802.11 Wireless Lan" },
 217
 218         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318,
 219           "Broadcom BCM4318 802.11 Wireless Lan" },
 220
 221         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319,
 222           "Broadcom BCM4319 802.11 Wireless Lan" }
 223 };
 224
 225 static device_method_t bwi_methods[] = {
 226         DEVMETHOD(device_probe,         bwi_probe),
 227         DEVMETHOD(device_attach,        bwi_attach),
 228         DEVMETHOD(device_detach,        bwi_detach),
 229         DEVMETHOD(device_shutdown,      bwi_shutdown),
 230 #if 0
 231         DEVMETHOD(device_suspend,       bwi_suspend),
 232         DEVMETHOD(device_resume,        bwi_resume),
 233 #endif
 234         DEVMETHOD_END
 235 };
 236
 237 static driver_t bwi_driver = {
 238         "bwi",
 239         bwi_methods,
 240         sizeof(struct bwi_softc)
 241 };
 242
 243 static devclass_t bwi_devclass;
 244
 245 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, NULL, NULL);
 246 DRIVER_MODULE(bwi, cardbus, bwi_driver, bwi_devclass, NULL, NULL);
 247
 248 MODULE_DEPEND(bwi, wlan, 1, 1, 1);
 249 MODULE_DEPEND(bwi, wlan_ratectl_onoe, 1, 1, 1);
 250 #if 0
 251 MODULE_DEPEND(bwi, wlan_ratectl_amrr, 1, 1, 1);
 252 #endif
 253 MODULE_DEPEND(bwi, pci, 1, 1, 1);
 254 MODULE_DEPEND(bwi, cardbus, 1, 1, 1);
 255
 256 static const struct {
 257         uint16_t        did_min;
 258         uint16_t        did_max;
 259         uint16_t        bbp_id;
 260 } bwi_bbpid_map[] = {
 261         { 0x4301, 0x4301, 0x4301 },
 262         { 0x4305, 0x4307, 0x4307 },
 263         { 0x4403, 0x4403, 0x4402 },
 264         { 0x4610, 0x4615, 0x4610 },
 265         { 0x4710, 0x4715, 0x4710 },
 266         { 0x4720, 0x4725, 0x4309 }
 267 };
 268
 269 static const struct {
 270         uint16_t        bbp_id;
 271         int             nregwin;
 272 } bwi_regwin_count[] = {
 273         { 0x4301, 5 },
 274         { 0x4306, 6 },
 275         { 0x4307, 5 },
 276         { 0x4310, 8 },
 277         { 0x4401, 3 },
 278         { 0x4402, 3 },
 279         { 0x4610, 9 },
 280         { 0x4704, 9 },
 281         { 0x4710, 9 },
 282         { 0x5365, 7 }
 283 };
 284
 285 #define CLKSRC(src)                             \
 286 [BWI_CLKSRC_ ## src] = {                        \
 287         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 288         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 289 }
 290
 291 static const struct {
 292         u_int   freq_min;
 293         u_int   freq_max;
 294 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 295         CLKSRC(LP_OSC),
 296         CLKSRC(CS_OSC),
 297         CLKSRC(PCI)
 298 };
 299
 300 #undef CLKSRC
 301
 302 #define VENDOR_LED_ACT(vendor)                          \
 303 {                                                       \
 304         .vid = PCI_VENDOR_##vendor,                     \
 305         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 306 }
 307
 308 static const struct {
 309         uint16_t        vid;
 310         uint8_t         led_act[BWI_LED_MAX];
 311 } bwi_vendor_led_act[] = {
 312         VENDOR_LED_ACT(COMPAQ),
 313         VENDOR_LED_ACT(LINKSYS)
 314 };
 315
 316 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 317         { BWI_VENDOR_LED_ACT_DEFAULT };
 318
 319 #undef VENDOR_LED_ACT
 320
 321 static const struct {
 322         int     on_dur;
 323         int     off_dur;
 324 } bwi_led_duration[109] = {
 325         [0]     = { 400, 100 },
 326         [2]     = { 150, 75 },
 327         [4]     = { 90, 45 },
 328         [11]    = { 66, 34 },
 329         [12]    = { 53, 26 },
 330         [18]    = { 42, 21 },
 331         [22]    = { 35, 17 },
 332         [24]    = { 32, 16 },
 333         [36]    = { 21, 10 },
 334         [48]    = { 16, 8 },
 335         [72]    = { 11, 5 },
 336         [96]    = { 9, 4 },
 337         [108]   = { 7, 3 }
 338 };
 339
 340 #ifdef BWI_DEBUG
 341 #ifdef BWI_DEBUG_VERBOSE
 342 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 343 #else
 344 static uint32_t bwi_debug;
 345 #endif
 346 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 347 #endif  /* BWI_DEBUG */
 348
 349 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 350
 351 static const struct ieee80211_rateset bwi_rateset_11b =
 352         { 4, { 2, 4, 11, 22 } };
 353 static const struct ieee80211_rateset bwi_rateset_11g =
 354         { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
 355
 356 uint16_t
 357 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 358 {
 359         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 360 }
 361
 362 static __inline void
 363 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 364                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 365                  int tx)
 366 {
 367         struct bwi_desc32 *desc = &desc_array[desc_idx];
 368         uint32_t ctrl, addr, addr_hi, addr_lo;
 369
 370         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 371         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 372
 373         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 374                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 375
 376         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 377                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 378         if (desc_idx == ndesc - 1)
 379                 ctrl |= BWI_DESC32_C_EOR;
 380         if (tx) {
 381                 /* XXX */
 382                 ctrl |= BWI_DESC32_C_FRAME_START |
 383                         BWI_DESC32_C_FRAME_END |
 384                         BWI_DESC32_C_INTR;
 385         }
 386
 387         desc->addr = htole32(addr);
 388         desc->ctrl = htole32(ctrl);
 389 }
 390
 391 /* XXX does not belong here */
 392 uint8_t
 393 bwi_rate2plcp(uint8_t rate)
 394 {
 395         rate &= IEEE80211_RATE_VAL;
 396
 397         switch (rate) {
 398         case 2:         return 0xa;
 399         case 4:         return 0x14;
 400         case 11:        return 0x37;
 401         case 22:        return 0x6e;
 402         case 44:        return 0xdc;
 403
 404         case 12:        return 0xb;
 405         case 18:        return 0xf;
 406         case 24:        return 0xa;
 407         case 36:        return 0xe;
 408         case 48:        return 0x9;
 409         case 72:        return 0xd;
 410         case 96:        return 0x8;
 411         case 108:       return 0xc;
 412
 413         default:
 414                 panic("unsupported rate %u", rate);
 415         }
 416 }
 417
 418 /* XXX does not belong here */
 419 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
 420 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
 421
 422 static __inline void
 423 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
 424 {
 425         uint32_t plcp;
 426
 427         plcp = __SHIFTIN(bwi_rate2plcp(rate), IEEE80211_OFDM_PLCP_RATE_MASK) |
 428                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
 429         *plcp0 = htole32(plcp);
 430 }
 431
 432 /* XXX does not belong here */
 433 struct ieee80211_ds_plcp_hdr {
 434         uint8_t         i_signal;
 435         uint8_t         i_service;
 436         uint16_t        i_length;
 437         uint16_t        i_crc;
 438 } __packed;
 439
 440 #define IEEE80211_DS_PLCP_SERVICE_LOCKED        0x04
 441 #define IEEE80211_DS_PLCL_SERVICE_PBCC          0x08
 442 #define IEEE80211_DS_PLCP_SERVICE_LENEXT5       0x20
 443 #define IEEE80211_DS_PLCP_SERVICE_LENEXT6       0x40
 444 #define IEEE80211_DS_PLCP_SERVICE_LENEXT7       0x80
 445
 446 static __inline void
 447 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
 448                    uint8_t rate)
 449 {
 450         int len, service, pkt_bitlen;
 451
 452         pkt_bitlen = pkt_len * NBBY;
 453         len = howmany(pkt_bitlen * 2, rate);
 454
 455         service = IEEE80211_DS_PLCP_SERVICE_LOCKED;
 456         if (rate == (11 * 2)) {
 457                 int pkt_bitlen1;
 458
 459                 /*
 460                  * PLCP service field needs to be adjusted,
 461                  * if TX rate is 11Mbytes/s
 462                  */
 463                 pkt_bitlen1 = len * 11;
 464                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
 465                         service |= IEEE80211_DS_PLCP_SERVICE_LENEXT7;
 466         }
 467
 468         plcp->i_signal = bwi_rate2plcp(rate);
 469         plcp->i_service = service;
 470         plcp->i_length = htole16(len);
 471         /* NOTE: do NOT touch i_crc */
 472 }
 473
 474 static __inline void
 475 bwi_plcp_header(void *plcp, int pkt_len, uint8_t rate)
 476 {
 477         enum ieee80211_modtype modtype;
 478
 479         /*
 480          * Assume caller has zeroed 'plcp'
 481          */
 482
 483         modtype = ieee80211_rate2modtype(rate);
 484         if (modtype == IEEE80211_MODTYPE_OFDM)
 485                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
 486         else if (modtype == IEEE80211_MODTYPE_DS)
 487                 bwi_ds_plcp_header(plcp, pkt_len, rate);
 488         else
 489                 panic("unsupport modulation type %u", modtype);
 490 }
 491
 492 static __inline uint8_t
 493 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
 494 {
 495         uint32_t plcp;
 496         uint8_t plcp_rate;
 497
 498         plcp = le32toh(*plcp0);
 499         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
 500         return ieee80211_plcp2rate(plcp_rate, 1);
 501 }
 502
 503 static __inline uint8_t
 504 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
 505 {
 506         return ieee80211_plcp2rate(hdr->i_signal, 0);
 507 }
 508
 509 static int
 510 bwi_probe(device_t dev)
 511 {
 512         const struct bwi_dev *b;
 513         uint16_t did, vid;
 514
 515         did = pci_get_device(dev);
 516         vid = pci_get_vendor(dev);
 517
 518         for (b = bwi_devices; b->desc != NULL; ++b) {
 519                 if (b->did == did && b->vid == vid) {
 520                         device_set_desc(dev, b->desc);
 521                         return 0;
 522                 }
 523         }
 524         return ENXIO;
 525 }
 526
 527 static int
 528 bwi_attach(device_t dev)
 529 {
 530         struct bwi_softc *sc = device_get_softc(dev);
 531         struct ieee80211com *ic = &sc->sc_ic;
 532         struct ifnet *ifp = &ic->ic_if;
 533         struct bwi_mac *mac;
 534         struct bwi_phy *phy;
 535         struct sysctl_ctx_list *ctx;
 536         struct sysctl_oid_list *tree;
 537         char ethstr[ETHER_ADDRSTRLEN + 1];
 538         int i, error;
 539
 540         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 541         sc->sc_dev = dev;
 542
 543         /*
 544          * Initialize sysctl variables
 545          */
 546         sc->sc_fw_version = BWI_FW_VERSION3;
 547         sc->sc_dwell_time = 200;
 548         sc->sc_led_idle = (2350 * hz) / 1000;
 549         sc->sc_led_blink = 1;
 550         sc->sc_txpwr_calib = 1;
 551 #ifdef BWI_DEBUG
 552         sc->sc_debug = bwi_debug;
 553 #endif
 554
 555         callout_init(&sc->sc_scan_ch);
 556         callout_init(&sc->sc_calib_ch);
 557
 558 #ifndef BURN_BRIDGES
 559         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 560                 uint32_t irq, mem;
 561
 562                 /* XXX Save more PCIR */
 563                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 564                 mem = pci_read_config(dev, BWI_PCIR_BAR, 4);
 565
 566                 device_printf(dev, "chip is in D%d power mode "
 567                     "-- setting to D0\n", pci_get_powerstate(dev));
 568
 569                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 570
 571                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 572                 pci_write_config(dev, BWI_PCIR_BAR, mem, 4);
 573         }
 574 #endif  /* !BURN_BRIDGE */
 575
 576         pci_enable_busmaster(dev);
 577
 578         /* Get more PCI information */
 579         sc->sc_pci_revid = pci_get_revid(dev);
 580         sc->sc_pci_subvid = pci_get_subvendor(dev);
 581         sc->sc_pci_subdid = pci_get_subdevice(dev);
 582
 583         /*
 584          * Allocate IO memory
 585          */
 586         sc->sc_mem_rid = BWI_PCIR_BAR;
 587         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 588                                                 &sc->sc_mem_rid, RF_ACTIVE);
 589         if (sc->sc_mem_res == NULL) {
 590                 device_printf(dev, "can't allocate IO memory\n");
 591                 return ENXIO;
 592         }
 593         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
 594         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
 595
 596         /*
 597          * Allocate IRQ
 598          */
 599         sc->sc_irq_rid = 0;
 600         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 601                                                 &sc->sc_irq_rid,
 602                                                 RF_SHAREABLE | RF_ACTIVE);
 603         if (sc->sc_irq_res == NULL) {
 604                 device_printf(dev, "can't allocate irq\n");
 605                 error = ENXIO;
 606                 goto fail;
 607         }
 608
 609         /*
 610          * Create sysctl tree
 611          */
 612         ctx = device_get_sysctl_ctx(sc->bge_dev);
 613         tree = device_get_sysctl_tree(sc->bge_dev);
 614
 615         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 616                         "dwell_time", CTLFLAG_RW, &sc->sc_dwell_time, 0,
 617                         "Channel dwell time during scan (msec)");
 618         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 619                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 620                         "Firmware version");
 621         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 622                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 623                         "# ticks before LED enters idle state");
 624         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 625                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 626                        "Allow LED to blink");
 627         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 628                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 629                        "Enable software TX power calibration");
 630 #ifdef BWI_DEBUG
 631         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 632                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 633 #endif
 634
 635         bwi_power_on(sc, 1);
 636
 637         error = bwi_bbp_attach(sc);
 638         if (error)
 639                 goto fail;
 640
 641         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 642         if (error)
 643                 goto fail;
 644
 645         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 646                 error = bwi_set_clock_delay(sc);
 647                 if (error)
 648                         goto fail;
 649
 650                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 651                 if (error)
 652                         goto fail;
 653
 654                 error = bwi_get_pwron_delay(sc);
 655                 if (error)
 656                         goto fail;
 657         }
 658
 659         error = bwi_bus_attach(sc);
 660         if (error)
 661                 goto fail;
 662
 663         bwi_get_card_flags(sc);
 664
 665         bwi_led_attach(sc);
 666
 667         for (i = 0; i < sc->sc_nmac; ++i) {
 668                 struct bwi_regwin *old;
 669
 670                 mac = &sc->sc_mac[i];
 671                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 672                 if (error)
 673                         goto fail;
 674
 675                 error = bwi_mac_lateattach(mac);
 676                 if (error)
 677                         goto fail;
 678
 679                 error = bwi_regwin_switch(sc, old, NULL);
 680                 if (error)
 681                         goto fail;
 682         }
 683
 684         /*
 685          * XXX First MAC is known to exist
 686          * TODO2
 687          */
 688         mac = &sc->sc_mac[0];
 689         phy = &mac->mac_phy;
 690
 691         bwi_bbp_power_off(sc);
 692
 693         error = bwi_dma_alloc(sc);
 694         if (error)
 695                 goto fail;
 696
 697         ifp->if_softc = sc;
 698         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 699         ifp->if_init = bwi_init;
 700         ifp->if_ioctl = bwi_ioctl;
 701         ifp->if_start = bwi_start;
 702         ifp->if_watchdog = bwi_watchdog;
 703         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 704 #ifdef notyet
 705         ifq_set_ready(&ifp->if_snd);
 706 #endif
 707
 708         /* Get locale */
 709         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 710                                    BWI_SPROM_CARD_INFO_LOCALE);
 711         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 712
 713         /*
 714          * Setup ratesets, phytype, channels and get MAC address
 715          */
 716         if (phy->phy_mode == IEEE80211_MODE_11B ||
 717             phy->phy_mode == IEEE80211_MODE_11G) {
 718                 uint16_t chan_flags;
 719
 720                 ic->ic_sup_rates[IEEE80211_MODE_11B] = bwi_rateset_11b;
 721
 722                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 723                         chan_flags = IEEE80211_CHAN_B;
 724                         ic->ic_phytype = IEEE80211_T_DS;
 725                 } else {
 726                         chan_flags = IEEE80211_CHAN_CCK |
 727                                      IEEE80211_CHAN_OFDM |
 728                                      IEEE80211_CHAN_DYN |
 729                                      IEEE80211_CHAN_2GHZ;
 730                         ic->ic_phytype = IEEE80211_T_OFDM;
 731                         ic->ic_sup_rates[IEEE80211_MODE_11G] =
 732                                 bwi_rateset_11g;
 733                 }
 734
 735                 /* XXX depend on locale */
 736                 for (i = 1; i <= 14; ++i) {
 737                         ic->ic_channels[i].ic_freq =
 738                                 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 739                         ic->ic_channels[i].ic_flags = chan_flags;
 740                 }
 741
 742                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, ic->ic_myaddr);
 743                 if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 744                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, ic->ic_myaddr);
 745                         if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 746                                 device_printf(dev, "invalid MAC address: "
 747                                     "%s\n", kether_ntoa(ic->ic_myaddr, ethstr));
 748                         }
 749                 }
 750         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 751                 /* TODO:11A */
 752                 error = ENXIO;
 753                 goto fail;
 754         } else {
 755                 panic("unknown phymode %d", phy->phy_mode);
 756         }
 757
 758         ic->ic_caps = IEEE80211_C_SHSLOT |
 759                       IEEE80211_C_SHPREAMBLE |
 760                       IEEE80211_C_WPA |
 761                       IEEE80211_C_MONITOR;
 762         ic->ic_state = IEEE80211_S_INIT;
 763         ic->ic_opmode = IEEE80211_M_STA;
 764
 765         IEEE80211_ONOE_PARAM_SETUP(&sc->sc_onoe_param);
 766         ic->ic_ratectl.rc_st_ratectl_cap = IEEE80211_RATECTL_CAP_ONOE;
 767         ic->ic_ratectl.rc_st_ratectl = IEEE80211_RATECTL_ONOE;
 768         ic->ic_ratectl.rc_st_attach = bwi_ratectl_attach;
 769
 770         ic->ic_updateslot = bwi_updateslot;
 771
 772         ieee80211_ifattach(ic);
 773
 774         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 775         ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
 776
 777         sc->sc_newstate = ic->ic_newstate;
 778         ic->ic_newstate = bwi_newstate;
 779
 780         ieee80211_media_init(ic, bwi_media_change, ieee80211_media_status);
 781
 782         /*
 783          * Attach radio tap
 784          */
 785         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 786                       sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
 787                       &sc->sc_drvbpf);
 788
 789         sc->sc_tx_th_len = roundup(sizeof(sc->sc_tx_th), sizeof(uint32_t));
 790         sc->sc_tx_th.wt_ihdr.it_len = htole16(sc->sc_tx_th_len);
 791         sc->sc_tx_th.wt_ihdr.it_present = htole32(BWI_TX_RADIOTAP_PRESENT);
 792
 793         sc->sc_rx_th_len = roundup(sizeof(sc->sc_rx_th), sizeof(uint32_t));
 794         sc->sc_rx_th.wr_ihdr.it_len = htole16(sc->sc_rx_th_len);
 795         sc->sc_rx_th.wr_ihdr.it_present = htole32(BWI_RX_RADIOTAP_PRESENT);
 796
 797         ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->sc_irq_res));
 798
 799         error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, bwi_intr, sc,
 800                                &sc->sc_irq_handle, ifp->if_serializer);
 801         if (error) {
 802                 device_printf(dev, "can't setup intr\n");
 803                 bpfdetach(ifp);
 804                 ieee80211_ifdetach(ic);
 805                 goto fail;
 806         }
 807
 808         if (bootverbose)
 809                 ieee80211_announce(ic);
 810
 811         return 0;
 812 fail:
 813         bwi_detach(dev);
 814         return error;
 815 }
 816
 817 static int
 818 bwi_detach(device_t dev)
 819 {
 820         struct bwi_softc *sc = device_get_softc(dev);
 821
 822         if (device_is_attached(dev)) {
 823                 struct ifnet *ifp = &sc->sc_ic.ic_if;
 824                 int i;
 825
 826                 lwkt_serialize_enter(ifp->if_serializer);
 827                 bwi_stop(sc, 1);
 828                 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 829                 lwkt_serialize_exit(ifp->if_serializer);
 830
 831                 bpfdetach(ifp);
 832                 ieee80211_ifdetach(&sc->sc_ic);
 833
 834                 for (i = 0; i < sc->sc_nmac; ++i)
 835                         bwi_mac_detach(&sc->sc_mac[i]);
 836         }
 837
 838         if (sc->sc_irq_res != NULL) {
 839                 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
 840                                      sc->sc_irq_res);
 841         }
 842
 843         if (sc->sc_mem_res != NULL) {
 844                 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid,
 845                                      sc->sc_mem_res);
 846         }
 847
 848         bwi_dma_free(sc);
 849
 850         return 0;
 851 }
 852
 853 static int
 854 bwi_shutdown(device_t dev)
 855 {
 856         struct bwi_softc *sc = device_get_softc(dev);
 857         struct ifnet *ifp = &sc->sc_ic.ic_if;
 858
 859         lwkt_serialize_enter(ifp->if_serializer);
 860         bwi_stop(sc, 1);
 861         lwkt_serialize_exit(ifp->if_serializer);
 862         return 0;
 863 }
 864
 865 static void
 866 bwi_power_on(struct bwi_softc *sc, int with_pll)
 867 {
 868         uint32_t gpio_in, gpio_out, gpio_en;
 869         uint16_t status;
 870
 871         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 872         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 873                 goto back;
 874
 875         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 876         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 877
 878         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 879         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 880         if (with_pll) {
 881                 /* Turn off PLL first */
 882                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 883                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 884         }
 885
 886         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 887         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 888         DELAY(1000);
 889
 890         if (with_pll) {
 891                 /* Turn on PLL */
 892                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 893                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 894                 DELAY(5000);
 895         }
 896
 897 back:
 898         /* Clear "Signaled Target Abort" */
 899         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 900         status &= ~PCIM_STATUS_STABORT;
 901         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 902 }
 903
 904 static int
 905 bwi_power_off(struct bwi_softc *sc, int with_pll)
 906 {
 907         uint32_t gpio_out, gpio_en;
 908
 909         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 910         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 911         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 912
 913         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 914         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 915         if (with_pll) {
 916                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 917                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 918         }
 919
 920         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 921         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 922         return 0;
 923 }
 924
 925 int
 926 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 927                   struct bwi_regwin **old_rw)
 928 {
 929         int error;
 930
 931         if (old_rw != NULL)
 932                 *old_rw = NULL;
 933
 934         if (!BWI_REGWIN_EXIST(rw))
 935                 return EINVAL;
 936
 937         if (sc->sc_cur_regwin != rw) {
 938                 error = bwi_regwin_select(sc, rw->rw_id);
 939                 if (error) {
 940                         if_printf(&sc->sc_ic.ic_if, "can't select regwin %d\n",
 941                                   rw->rw_id);
 942                         return error;
 943                 }
 944         }
 945
 946         if (old_rw != NULL)
 947                 *old_rw = sc->sc_cur_regwin;
 948         sc->sc_cur_regwin = rw;
 949         return 0;
 950 }
 951
 952 static int
 953 bwi_regwin_select(struct bwi_softc *sc, int id)
 954 {
 955         uint32_t win = BWI_PCIM_REGWIN(id);
 956         int i;
 957
 958 #define RETRY_MAX       50
 959         for (i = 0; i < RETRY_MAX; ++i) {
 960                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 961                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 962                         return 0;
 963                 DELAY(10);
 964         }
 965 #undef RETRY_MAX
 966
 967         return ENXIO;
 968 }
 969
 970 static void
 971 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 972 {
 973         uint32_t val;
 974
 975         val = CSR_READ_4(sc, BWI_ID_HI);
 976         *type = BWI_ID_HI_REGWIN_TYPE(val);
 977         *rev = BWI_ID_HI_REGWIN_REV(val);
 978
 979         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 980                 "vendor 0x%04x\n", *type, *rev,
 981                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 982 }
 983
 984 static int
 985 bwi_bbp_attach(struct bwi_softc *sc)
 986 {
 987         uint16_t bbp_id, rw_type;
 988         uint8_t rw_rev;
 989         uint32_t info;
 990         int error, nregwin, i;
 991
 992         /*
 993          * Get 0th regwin information
 994          * NOTE: 0th regwin should exist
 995          */
 996         error = bwi_regwin_select(sc, 0);
 997         if (error) {
 998                 device_printf(sc->sc_dev, "can't select regwin 0\n");
 999                 return error;
1000         }
1001         bwi_regwin_info(sc, &rw_type, &rw_rev);
1002
1003         /*
1004          * Find out BBP id
1005          */
1006         bbp_id = 0;
1007         info = 0;
1008         if (rw_type == BWI_REGWIN_T_COM) {
1009                 info = CSR_READ_4(sc, BWI_INFO);
1010                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
1011
1012                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
1013
1014                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
1015         } else {
1016                 uint16_t did = pci_get_device(sc->sc_dev);
1017                 uint8_t revid = pci_get_revid(sc->sc_dev);
1018
1019                 for (i = 0; i < NELEM(bwi_bbpid_map); ++i) {
1020                         if (did >= bwi_bbpid_map[i].did_min &&
1021                             did <= bwi_bbpid_map[i].did_max) {
1022                                 bbp_id = bwi_bbpid_map[i].bbp_id;
1023                                 break;
1024                         }
1025                 }
1026                 if (bbp_id == 0) {
1027                         device_printf(sc->sc_dev, "no BBP id for device id "
1028                                       "0x%04x\n", did);
1029                         return ENXIO;
1030                 }
1031
1032                 info = __SHIFTIN(revid, BWI_INFO_BBPREV_MASK) |
1033                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
1034         }
1035
1036         /*
1037          * Find out number of regwins
1038          */
1039         nregwin = 0;
1040         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
1041                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
1042         } else {
1043                 for (i = 0; i < NELEM(bwi_regwin_count); ++i) {
1044                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
1045                                 nregwin = bwi_regwin_count[i].nregwin;
1046                                 break;
1047                         }
1048                 }
1049                 if (nregwin == 0) {
1050                         device_printf(sc->sc_dev, "no number of win for "
1051                                       "BBP id 0x%04x\n", bbp_id);
1052                         return ENXIO;
1053                 }
1054         }
1055
1056         /* Record BBP id/rev for later using */
1057         sc->sc_bbp_id = bbp_id;
1058         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
1059         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
1060         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
1061                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
1062
1063         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
1064                 nregwin, sc->sc_cap);
1065
1066         /*
1067          * Create rest of the regwins
1068          */
1069
1070         /* Don't re-create common regwin, if it is already created */
1071         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
1072
1073         for (; i < nregwin; ++i) {
1074                 /*
1075                  * Get regwin information
1076                  */
1077                 error = bwi_regwin_select(sc, i);
1078                 if (error) {
1079                         device_printf(sc->sc_dev,
1080                                       "can't select regwin %d\n", i);
1081                         return error;
1082                 }
1083                 bwi_regwin_info(sc, &rw_type, &rw_rev);
1084
1085                 /*
1086                  * Try attach:
1087                  * 1) Bus (PCI/PCIE) regwin
1088                  * 2) MAC regwin
1089                  * Ignore rest types of regwin
1090                  */
1091                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
1092                     rw_type == BWI_REGWIN_T_BUSPCIE) {
1093                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1094                                 device_printf(sc->sc_dev,
1095                                               "bus regwin already exists\n");
1096                         } else {
1097                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
1098                                                   rw_type, rw_rev);
1099                         }
1100                 } else if (rw_type == BWI_REGWIN_T_MAC) {
1101                         /* XXX ignore return value */
1102                         bwi_mac_attach(sc, i, rw_rev);
1103                 }
1104         }
1105
1106         /* At least one MAC shold exist */
1107         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
1108                 device_printf(sc->sc_dev, "no MAC was found\n");
1109                 return ENXIO;
1110         }
1111         KKASSERT(sc->sc_nmac > 0);
1112
1113         /* Bus regwin must exist */
1114         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1115                 device_printf(sc->sc_dev, "no bus regwin was found\n");
1116                 return ENXIO;
1117         }
1118
1119         /* Start with first MAC */
1120         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
1121         if (error)
1122                 return error;
1123
1124         return 0;
1125 }
1126
1127 int
1128 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
1129 {
1130         struct bwi_regwin *old, *bus;
1131         uint32_t val;
1132         int error;
1133
1134         bus = &sc->sc_bus_regwin;
1135         KKASSERT(sc->sc_cur_regwin == &mac->mac_regwin);
1136
1137         /*
1138          * Tell bus to generate requested interrupts
1139          */
1140         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1141                 /*
1142                  * NOTE: Read BWI_FLAGS from MAC regwin
1143                  */
1144                 val = CSR_READ_4(sc, BWI_FLAGS);
1145
1146                 error = bwi_regwin_switch(sc, bus, &old);
1147                 if (error)
1148                         return error;
1149
1150                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
1151         } else {
1152                 uint32_t mac_mask;
1153
1154                 mac_mask = 1 << mac->mac_id;
1155
1156                 error = bwi_regwin_switch(sc, bus, &old);
1157                 if (error)
1158                         return error;
1159
1160                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
1161                 val |= mac_mask << 8;
1162                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
1163         }
1164
1165         if (sc->sc_flags & BWI_F_BUS_INITED)
1166                 goto back;
1167
1168         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1169                 /*
1170                  * Enable prefetch and burst
1171                  */
1172                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
1173                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
1174
1175                 if (bus->rw_rev < 5) {
1176                         struct bwi_regwin *com = &sc->sc_com_regwin;
1177
1178                         /*
1179                          * Configure timeouts for bus operation
1180                          */
1181
1182                         /*
1183                          * Set service timeout and request timeout
1184                          */
1185                         CSR_SETBITS_4(sc, BWI_CONF_LO,
1186                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
1187                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
1188
1189                         /*
1190                          * If there is common regwin, we switch to that regwin
1191                          * and switch back to bus regwin once we have done.
1192                          */
1193                         if (BWI_REGWIN_EXIST(com)) {
1194                                 error = bwi_regwin_switch(sc, com, NULL);
1195                                 if (error)
1196                                         return error;
1197                         }
1198
1199                         /* Let bus know what we have changed */
1200                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
1201                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
1202                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
1203                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
1204
1205                         if (BWI_REGWIN_EXIST(com)) {
1206                                 error = bwi_regwin_switch(sc, bus, NULL);
1207                                 if (error)
1208                                         return error;
1209                         }
1210                 } else if (bus->rw_rev >= 11) {
1211                         /*
1212                          * Enable memory read multiple
1213                          */
1214                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1215                 }
1216         } else {
1217                 /* TODO:PCIE */
1218         }
1219
1220         sc->sc_flags |= BWI_F_BUS_INITED;
1221 back:
1222         return bwi_regwin_switch(sc, old, NULL);
1223 }
1224
1225 static void
1226 bwi_get_card_flags(struct bwi_softc *sc)
1227 {
1228         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1229         if (sc->sc_card_flags == 0xffff)
1230                 sc->sc_card_flags = 0;
1231
1232         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1233             sc->sc_pci_subdid == 0x4e && /* XXX */
1234             sc->sc_pci_revid > 0x40)
1235                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1236
1237         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1238 }
1239
1240 static void
1241 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1242 {
1243         int i;
1244
1245         for (i = 0; i < 3; ++i) {
1246                 *((uint16_t *)eaddr + i) =
1247                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1248         }
1249 }
1250
1251 static void
1252 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1253 {
1254         struct bwi_regwin *com;
1255         uint32_t val;
1256         u_int div;
1257         int src;
1258
1259         bzero(freq, sizeof(*freq));
1260         com = &sc->sc_com_regwin;
1261
1262         KKASSERT(BWI_REGWIN_EXIST(com));
1263         KKASSERT(sc->sc_cur_regwin == com);
1264         KKASSERT(sc->sc_cap & BWI_CAP_CLKMODE);
1265
1266         /*
1267          * Calculate clock frequency
1268          */
1269         src = -1;
1270         div = 0;
1271         if (com->rw_rev < 6) {
1272                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1273                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1274                         src = BWI_CLKSRC_PCI;
1275                         div = 64;
1276                 } else {
1277                         src = BWI_CLKSRC_CS_OSC;
1278                         div = 32;
1279                 }
1280         } else if (com->rw_rev < 10) {
1281                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1282
1283                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1284                 if (src == BWI_CLKSRC_LP_OSC) {
1285                         div = 1;
1286                 } else {
1287                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1288
1289                         /* Unknown source */
1290                         if (src >= BWI_CLKSRC_MAX)
1291                                 src = BWI_CLKSRC_CS_OSC;
1292                 }
1293         } else {
1294                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1295
1296                 src = BWI_CLKSRC_CS_OSC;
1297                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1298         }
1299
1300         KKASSERT(src >= 0 && src < BWI_CLKSRC_MAX);
1301         KKASSERT(div != 0);
1302
1303         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1304                 src == BWI_CLKSRC_PCI ? "PCI" :
1305                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1306
1307         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1308         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1309
1310         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1311                 freq->clkfreq_min, freq->clkfreq_max);
1312 }
1313
1314 static int
1315 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1316 {
1317         struct bwi_regwin *old, *com;
1318         uint32_t clk_ctrl, clk_src;
1319         int error, pwr_off = 0;
1320
1321         com = &sc->sc_com_regwin;
1322         if (!BWI_REGWIN_EXIST(com))
1323                 return 0;
1324
1325         if (com->rw_rev >= 10 || com->rw_rev < 6)
1326                 return 0;
1327
1328         /*
1329          * For common regwin whose rev is [6, 10), the chip
1330          * must be capable to change clock mode.
1331          */
1332         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1333                 return 0;
1334
1335         error = bwi_regwin_switch(sc, com, &old);
1336         if (error)
1337                 return error;
1338
1339         if (clk_mode == BWI_CLOCK_MODE_FAST)
1340                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1341
1342         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1343         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1344
1345         switch (clk_mode) {
1346         case BWI_CLOCK_MODE_FAST:
1347                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1348                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1349                 break;
1350         case BWI_CLOCK_MODE_SLOW:
1351                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1352                 break;
1353         case BWI_CLOCK_MODE_DYN:
1354                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1355                               BWI_CLOCK_CTRL_IGNPLL |
1356                               BWI_CLOCK_CTRL_NODYN);
1357                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1358                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1359                         pwr_off = 1;
1360                 }
1361                 break;
1362         }
1363         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1364
1365         if (pwr_off)
1366                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1367
1368         return bwi_regwin_switch(sc, old, NULL);
1369 }
1370
1371 static int
1372 bwi_set_clock_delay(struct bwi_softc *sc)
1373 {
1374         struct bwi_regwin *old, *com;
1375         int error;
1376
1377         com = &sc->sc_com_regwin;
1378         if (!BWI_REGWIN_EXIST(com))
1379                 return 0;
1380
1381         error = bwi_regwin_switch(sc, com, &old);
1382         if (error)
1383                 return error;
1384
1385         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1386                 if (sc->sc_bbp_rev == 0)
1387                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1388                 else if (sc->sc_bbp_rev == 1)
1389                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1390         }
1391
1392         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1393                 if (com->rw_rev >= 10) {
1394                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1395                 } else {
1396                         struct bwi_clock_freq freq;
1397
1398                         bwi_get_clock_freq(sc, &freq);
1399                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1400                                 howmany(freq.clkfreq_max * 150, 1000000));
1401                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1402                                 howmany(freq.clkfreq_max * 15, 1000000));
1403                 }
1404         }
1405
1406         return bwi_regwin_switch(sc, old, NULL);
1407 }
1408
1409 static void
1410 bwi_init(void *xsc)
1411 {
1412         bwi_init_statechg(xsc, 1);
1413 }
1414
1415 static void
1416 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1417 {
1418         struct ieee80211com *ic = &sc->sc_ic;
1419         struct ifnet *ifp = &ic->ic_if;
1420         struct bwi_mac *mac;
1421         int error;
1422
1423         ASSERT_SERIALIZED(ifp->if_serializer);
1424
1425         error = bwi_stop(sc, statechg);
1426         if (error) {
1427                 if_printf(ifp, "can't stop\n");
1428                 return;
1429         }
1430
1431         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1432
1433         /* TODO: 2 MAC */
1434
1435         mac = &sc->sc_mac[0];
1436         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1437         if (error)
1438                 goto back;
1439
1440         error = bwi_mac_init(mac);
1441         if (error)
1442                 goto back;
1443
1444         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1445
1446         bcopy(IF_LLADDR(ifp), ic->ic_myaddr, sizeof(ic->ic_myaddr));
1447
1448         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1449         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, ic->ic_myaddr);
1450
1451         bwi_mac_reset_hwkeys(mac);
1452
1453         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1454                 int i;
1455
1456 #define NRETRY  1000
1457                 /*
1458                  * Drain any possible pending TX status
1459                  */
1460                 for (i = 0; i < NRETRY; ++i) {
1461                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1462                              BWI_TXSTATUS0_VALID) == 0)
1463                                 break;
1464                         CSR_READ_4(sc, BWI_TXSTATUS1);
1465                 }
1466                 if (i == NRETRY)
1467                         if_printf(ifp, "can't drain TX status\n");
1468 #undef NRETRY
1469         }
1470
1471         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1472                 bwi_mac_updateslot(mac, 1);
1473
1474         /* Start MAC */
1475         error = bwi_mac_start(mac);
1476         if (error)
1477                 goto back;
1478
1479         /* Enable intrs */
1480         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1481
1482         ifp->if_flags |= IFF_RUNNING;
1483         ifq_clr_oactive(&ifp->if_snd);
1484
1485         if (statechg) {
1486                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
1487                         if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
1488                                 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
1489                 } else {
1490                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1491                 }
1492         } else {
1493                 ieee80211_new_state(ic, ic->ic_state, -1);
1494         }
1495 back:
1496         if (error)
1497                 bwi_stop(sc, 1);
1498         else
1499                 ifp->if_start(ifp);
1500 }
1501
1502 static int
1503 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t req, struct ucred *cr)
1504 {
1505         struct bwi_softc *sc = ifp->if_softc;
1506         int error = 0;
1507
1508         ASSERT_SERIALIZED(ifp->if_serializer);
1509
1510         switch (cmd) {
1511         case SIOCSIFFLAGS:
1512                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1513                     (IFF_UP | IFF_RUNNING)) {
1514                         struct bwi_mac *mac;
1515                         int promisc = -1;
1516
1517                         KKASSERT(sc->sc_cur_regwin->rw_type ==
1518                                  BWI_REGWIN_T_MAC);
1519                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1520
1521                         if ((ifp->if_flags & IFF_PROMISC) &&
1522                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1523                                 promisc = 1;
1524                                 sc->sc_flags |= BWI_F_PROMISC;
1525                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1526                                    (sc->sc_flags & BWI_F_PROMISC)) {
1527                                 promisc = 0;
1528                                 sc->sc_flags &= ~BWI_F_PROMISC;
1529                         }
1530
1531                         if (promisc >= 0)
1532                                 bwi_mac_set_promisc(mac, promisc);
1533                 }
1534
1535                 if (ifp->if_flags & IFF_UP) {
1536                         if ((ifp->if_flags & IFF_RUNNING) == 0)
1537                                 bwi_init(sc);
1538                 } else {
1539                         if (ifp->if_flags & IFF_RUNNING)
1540                                 bwi_stop(sc, 1);
1541                 }
1542                 break;
1543         default:
1544                 error = ieee80211_ioctl(&sc->sc_ic, cmd, req, cr);
1545                 break;
1546         }
1547
1548         if (error == ENETRESET) {
1549                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1550                     (IFF_UP | IFF_RUNNING))
1551                         bwi_init(sc);
1552                 error = 0;
1553         }
1554         return error;
1555 }
1556
1557 static void
1558 bwi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
1559 {
1560         struct bwi_softc *sc = ifp->if_softc;
1561         struct ieee80211com *ic = &sc->sc_ic;
1562         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1563         int trans, idx;
1564
1565         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
1566         ASSERT_SERIALIZED(ifp->if_serializer);
1567
1568         if (ifq_is_oactive(&ifp->if_snd) || (ifp->if_flags & IFF_RUNNING) == 0)
1569                 return;
1570
1571         trans = 0;
1572         idx = tbd->tbd_idx;
1573
1574         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1575                 struct ieee80211_frame *wh;
1576                 struct ieee80211_node *ni;
1577                 struct mbuf *m;
1578                 int mgt_pkt = 0;
1579
1580                 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1581                         IF_DEQUEUE(&ic->ic_mgtq, m);
1582
1583                         ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1584                         m->m_pkthdr.rcvif = NULL;
1585
1586                         mgt_pkt = 1;
1587                 } else if (!ifq_is_empty(&ifp->if_snd)) {
1588                         struct ether_header *eh;
1589
1590                         if (ic->ic_state != IEEE80211_S_RUN) {
1591                                 ifq_purge(&ifp->if_snd);
1592                                 break;
1593                         }
1594
1595                         m = ifq_dequeue(&ifp->if_snd);
1596                         if (m == NULL)
1597                                 break;
1598
1599                         if (m->m_len < sizeof(*eh)) {
1600                                 m = m_pullup(m, sizeof(*eh));
1601                                 if (m == NULL) {
1602                                         IFNET_STAT_INC(ifp, oerrors, 1);
1603                                         continue;
1604                                 }
1605                         }
1606                         eh = mtod(m, struct ether_header *);
1607
1608                         ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1609                         if (ni == NULL) {
1610                                 m_freem(m);
1611                                 IFNET_STAT_INC(ifp, oerrors, 1);
1612                                 continue;
1613                         }
1614
1615                         /* TODO: PS */
1616
1617                         BPF_MTAP(ifp, m);
1618
1619                         m = ieee80211_encap(ic, m, ni);
1620                         if (m == NULL) {
1621                                 ieee80211_free_node(ni);
1622                                 IFNET_STAT_INC(ifp, oerrors, 1);
1623                                 continue;
1624                         }
1625                 } else {
1626                         break;
1627                 }
1628
1629                 if (ic->ic_rawbpf != NULL)
1630                         bpf_mtap(ic->ic_rawbpf, m);
1631
1632                 wh = mtod(m, struct ieee80211_frame *);
1633                 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1634                         if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1635                                 ieee80211_free_node(ni);
1636                                 m_freem(m);
1637                                 IFNET_STAT_INC(ifp, oerrors, 1);
1638                                 continue;
1639                         }
1640                 }
1641                 wh = NULL;      /* Catch any invalid use */
1642
1643                 if (bwi_encap(sc, idx, m, &ni, mgt_pkt) != 0) {
1644                         /* 'm' is freed in bwi_encap() if we reach here */
1645                         if (ni != NULL)
1646                                 ieee80211_free_node(ni);
1647                         IFNET_STAT_INC(ifp, oerrors, 1);
1648                         continue;
1649                 }
1650
1651                 trans = 1;
1652                 tbd->tbd_used++;
1653                 idx = (idx + 1) % BWI_TX_NDESC;
1654
1655                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1656                         ifq_set_oactive(&ifp->if_snd);
1657                         break;
1658                 }
1659         }
1660         tbd->tbd_idx = idx;
1661
1662         if (trans)
1663                 sc->sc_tx_timer = 5;
1664         ifp->if_timer = 1;
1665 }
1666
1667 static void
1668 bwi_watchdog(struct ifnet *ifp)
1669 {
1670         struct bwi_softc *sc = ifp->if_softc;
1671
1672         ASSERT_SERIALIZED(ifp->if_serializer);
1673
1674         ifp->if_timer = 0;
1675
1676         if ((ifp->if_flags & IFF_RUNNING) == 0)
1677                 return;
1678
1679         if (sc->sc_tx_timer) {
1680                 if (--sc->sc_tx_timer == 0) {
1681                         if_printf(ifp, "watchdog timeout\n");
1682                         IFNET_STAT_INC(ifp, oerrors, 1);
1683                         /* TODO */
1684                 } else {
1685                         ifp->if_timer = 1;
1686                 }
1687         }
1688         ieee80211_watchdog(&sc->sc_ic);
1689 }
1690
1691 static int
1692 bwi_stop(struct bwi_softc *sc, int state_chg)
1693 {
1694         struct ieee80211com *ic = &sc->sc_ic;
1695         struct ifnet *ifp = &ic->ic_if;
1696         struct bwi_mac *mac;
1697         int i, error, pwr_off = 0;
1698
1699         ASSERT_SERIALIZED(ifp->if_serializer);
1700
1701         if (state_chg)
1702                 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
1703         else
1704                 bwi_newstate_begin(sc, IEEE80211_S_INIT);
1705
1706         if (ifp->if_flags & IFF_RUNNING) {
1707                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1708                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1709
1710                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1711                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1712                 bwi_mac_stop(mac);
1713         }
1714
1715         for (i = 0; i < sc->sc_nmac; ++i) {
1716                 struct bwi_regwin *old_rw;
1717
1718                 mac = &sc->sc_mac[i];
1719                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1720                         continue;
1721
1722                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1723                 if (error)
1724                         continue;
1725
1726                 bwi_mac_shutdown(mac);
1727                 pwr_off = 1;
1728
1729                 bwi_regwin_switch(sc, old_rw, NULL);
1730         }
1731
1732         if (pwr_off)
1733                 bwi_bbp_power_off(sc);
1734
1735         sc->sc_tx_timer = 0;
1736         ifp->if_timer = 0;
1737         ifp->if_flags &= ~IFF_RUNNING;
1738         ifq_clr_oactive(&ifp->if_snd);
1739         return 0;
1740 }
1741
1742 static void
1743 bwi_intr(void *xsc)
1744 {
1745         struct bwi_softc *sc = xsc;
1746         struct bwi_mac *mac;
1747         struct ifnet *ifp = &sc->sc_ic.ic_if;
1748         uint32_t intr_status;
1749         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1750         int i, txrx_error, tx = 0, rx_data = -1;
1751
1752         ASSERT_SERIALIZED(ifp->if_serializer);
1753
1754         if ((ifp->if_flags & IFF_RUNNING) == 0)
1755                 return;
1756
1757         /*
1758          * Get interrupt status
1759          */
1760         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1761         if (intr_status == 0xffffffff)  /* Not for us */
1762                 return;
1763
1764         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1765
1766         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1767         if (intr_status == 0)           /* Nothing is interesting */
1768                 return;
1769
1770         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1771         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1772
1773         txrx_error = 0;
1774         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1775         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1776                 uint32_t mask;
1777
1778                 if (BWI_TXRX_IS_RX(i))
1779                         mask = BWI_TXRX_RX_INTRS;
1780                 else
1781                         mask = BWI_TXRX_TX_INTRS;
1782
1783                 txrx_intr_status[i] =
1784                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1785
1786                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1787                          i, txrx_intr_status[i]);
1788
1789                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1790                         if_printf(ifp, "intr fatal TX/RX (%d) error 0x%08x\n",
1791                                   i, txrx_intr_status[i]);
1792                         txrx_error = 1;
1793                 }
1794         }
1795         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1796
1797         /*
1798          * Acknowledge interrupt
1799          */
1800         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1801
1802         for (i = 0; i < BWI_TXRX_NRING; ++i)
1803                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1804
1805         /* Disable all interrupts */
1806         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1807
1808         if (intr_status & BWI_INTR_PHY_TXERR) {
1809                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1810                         if_printf(ifp, "intr PHY TX error\n");
1811                         /* XXX to netisr0? */
1812                         bwi_init_statechg(sc, 0);
1813                         return;
1814                 }
1815         }
1816
1817         if (txrx_error) {
1818                 /* TODO: reset device */
1819         }
1820
1821         if (intr_status & BWI_INTR_TBTT)
1822                 bwi_mac_config_ps(mac);
1823
1824         if (intr_status & BWI_INTR_EO_ATIM)
1825                 if_printf(ifp, "EO_ATIM\n");
1826
1827         if (intr_status & BWI_INTR_PMQ) {
1828                 for (;;) {
1829                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1830                                 break;
1831                 }
1832                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1833         }
1834
1835         if (intr_status & BWI_INTR_NOISE)
1836                 if_printf(ifp, "intr noise\n");
1837
1838         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX)
1839                 rx_data = sc->sc_rxeof(sc);
1840
1841         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1842                 sc->sc_txeof_status(sc);
1843                 tx = 1;
1844         }
1845
1846         if (intr_status & BWI_INTR_TX_DONE) {
1847                 bwi_txeof(sc);
1848                 tx = 1;
1849         }
1850
1851         /* Re-enable interrupts */
1852         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1853
1854         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1855                 int evt = BWI_LED_EVENT_NONE;
1856
1857                 if (tx && rx_data > 0) {
1858                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1859                                 evt = BWI_LED_EVENT_RX;
1860                         else
1861                                 evt = BWI_LED_EVENT_TX;
1862                 } else if (tx) {
1863                         evt = BWI_LED_EVENT_TX;
1864                 } else if (rx_data > 0) {
1865                         evt = BWI_LED_EVENT_RX;
1866                 } else if (rx_data == 0) {
1867                         evt = BWI_LED_EVENT_POLL;
1868                 }
1869
1870                 if (evt != BWI_LED_EVENT_NONE)
1871                         bwi_led_event(sc, evt);
1872         }
1873 }
1874
1875 static void
1876 bwi_newstate_begin(struct bwi_softc *sc, enum ieee80211_state nstate)
1877 {
1878         callout_stop(&sc->sc_scan_ch);
1879         callout_stop(&sc->sc_calib_ch);
1880
1881         ieee80211_ratectl_newstate(&sc->sc_ic, nstate);
1882         bwi_led_newstate(sc, nstate);
1883
1884         if (nstate == IEEE80211_S_INIT)
1885                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1886 }
1887
1888 static int
1889 bwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1890 {
1891         struct bwi_softc *sc = ic->ic_if.if_softc;
1892         struct ifnet *ifp = &ic->ic_if;
1893         int error;
1894
1895         ASSERT_SERIALIZED(ifp->if_serializer);
1896
1897         bwi_newstate_begin(sc, nstate);
1898
1899         if (nstate == IEEE80211_S_INIT)
1900                 goto back;
1901
1902         error = bwi_set_chan(sc, ic->ic_curchan);
1903         if (error) {
1904                 if_printf(ifp, "can't set channel to %u\n",
1905                           ieee80211_chan2ieee(ic, ic->ic_curchan));
1906                 return error;
1907         }
1908
1909         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1910                 /* Nothing to do */
1911         } else if (nstate == IEEE80211_S_RUN) {
1912                 struct bwi_mac *mac;
1913
1914                 bwi_set_bssid(sc, ic->ic_bss->ni_bssid);
1915
1916                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1917                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1918
1919                 /* Initial TX power calibration */
1920                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1921 #ifdef notyet
1922                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1923 #else
1924                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1925 #endif
1926         } else {
1927                 bwi_set_bssid(sc, bwi_zero_addr);
1928         }
1929
1930 back:
1931         error = sc->sc_newstate(ic, nstate, arg);
1932
1933         if (nstate == IEEE80211_S_SCAN) {
1934                 callout_reset(&sc->sc_scan_ch,
1935                               (sc->sc_dwell_time * hz) / 1000,
1936                               bwi_next_scan, sc);
1937         } else if (nstate == IEEE80211_S_RUN) {
1938                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1939         }
1940         return error;
1941 }
1942
1943 static int
1944 bwi_media_change(struct ifnet *ifp)
1945 {
1946         int error;
1947
1948         ASSERT_SERIALIZED(ifp->if_serializer);
1949
1950         error = ieee80211_media_change(ifp);
1951         if (error != ENETRESET)
1952                 return error;
1953
1954         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
1955                 bwi_init(ifp->if_softc);
1956         return 0;
1957 }
1958
1959 static int
1960 bwi_dma_alloc(struct bwi_softc *sc)
1961 {
1962         int error, i, has_txstats;
1963         bus_addr_t lowaddr = 0;
1964         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1965         uint32_t txrx_ctrl_step = 0;
1966
1967         has_txstats = 0;
1968         for (i = 0; i < sc->sc_nmac; ++i) {
1969                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1970                         has_txstats = 1;
1971                         break;
1972                 }
1973         }
1974
1975         switch (sc->sc_bus_space) {
1976         case BWI_BUS_SPACE_30BIT:
1977         case BWI_BUS_SPACE_32BIT:
1978                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1979                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1980                 else
1981                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1982                 desc_sz = sizeof(struct bwi_desc32);
1983                 txrx_ctrl_step = 0x20;
1984
1985                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1986                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
1987                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
1988                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
1989                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
1990                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
1991                 sc->sc_rxeof = bwi_rxeof32;
1992                 sc->sc_start_tx = bwi_start_tx32;
1993                 if (has_txstats) {
1994                         sc->sc_init_txstats = bwi_init_txstats32;
1995                         sc->sc_free_txstats = bwi_free_txstats32;
1996                         sc->sc_txeof_status = bwi_txeof_status32;
1997                 }
1998                 break;
1999
2000         case BWI_BUS_SPACE_64BIT:
2001                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
2002                 desc_sz = sizeof(struct bwi_desc64);
2003                 txrx_ctrl_step = 0x40;
2004
2005                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
2006                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
2007                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
2008                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
2009                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
2010                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
2011                 sc->sc_rxeof = bwi_rxeof64;
2012                 sc->sc_start_tx = bwi_start_tx64;
2013                 if (has_txstats) {
2014                         sc->sc_init_txstats = bwi_init_txstats64;
2015                         sc->sc_free_txstats = bwi_free_txstats64;
2016                         sc->sc_txeof_status = bwi_txeof_status64;
2017                 }
2018                 break;
2019         }
2020
2021         KKASSERT(lowaddr != 0);
2022         KKASSERT(desc_sz != 0);
2023         KKASSERT(txrx_ctrl_step != 0);
2024
2025         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
2026         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
2027
2028         /*
2029          * Create top level DMA tag
2030          */
2031         error = bus_dma_tag_create(NULL, BWI_ALIGN, 0,
2032                                    lowaddr, BUS_SPACE_MAXADDR,
2033                                    NULL, NULL,
2034                                    MAXBSIZE,
2035                                    BUS_SPACE_UNRESTRICTED,
2036                                    BUS_SPACE_MAXSIZE_32BIT,
2037                                    0, &sc->sc_parent_dtag);
2038         if (error) {
2039                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
2040                 return error;
2041         }
2042
2043 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
2044
2045         /*
2046          * Create TX ring DMA stuffs
2047          */
2048         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2049                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2050                                    NULL, NULL,
2051                                    tx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2052                                    0, &sc->sc_txring_dtag);
2053         if (error) {
2054                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
2055                 return error;
2056         }
2057
2058         for (i = 0; i < BWI_TX_NRING; ++i) {
2059                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
2060                                            &sc->sc_tx_rdata[i], tx_ring_sz,
2061                                            TXRX_CTRL(i));
2062                 if (error) {
2063                         device_printf(sc->sc_dev, "%dth TX ring "
2064                                       "DMA alloc failed\n", i);
2065                         return error;
2066                 }
2067         }
2068
2069         /*
2070          * Create RX ring DMA stuffs
2071          */
2072         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2073                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2074                                    NULL, NULL,
2075                                    rx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2076                                    0, &sc->sc_rxring_dtag);
2077         if (error) {
2078                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
2079                 return error;
2080         }
2081
2082         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
2083                                    rx_ring_sz, TXRX_CTRL(0));
2084         if (error) {
2085                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
2086                 return error;
2087         }
2088
2089         if (has_txstats) {
2090                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
2091                 if (error) {
2092                         device_printf(sc->sc_dev,
2093                                       "TX stats DMA alloc failed\n");
2094                         return error;
2095                 }
2096         }
2097
2098 #undef TXRX_CTRL
2099
2100         return bwi_dma_mbuf_create(sc);
2101 }
2102
2103 static void
2104 bwi_dma_free(struct bwi_softc *sc)
2105 {
2106         if (sc->sc_txring_dtag != NULL) {
2107                 int i;
2108
2109                 for (i = 0; i < BWI_TX_NRING; ++i) {
2110                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2111
2112                         if (rd->rdata_desc != NULL) {
2113                                 bus_dmamap_unload(sc->sc_txring_dtag,
2114                                                   rd->rdata_dmap);
2115                                 bus_dmamem_free(sc->sc_txring_dtag,
2116                                                 rd->rdata_desc,
2117                                                 rd->rdata_dmap);
2118                         }
2119                 }
2120                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2121         }
2122
2123         if (sc->sc_rxring_dtag != NULL) {
2124                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2125
2126                 if (rd->rdata_desc != NULL) {
2127                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2128                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2129                                         rd->rdata_dmap);
2130                 }
2131                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2132         }
2133
2134         bwi_dma_txstats_free(sc);
2135         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2136
2137         if (sc->sc_parent_dtag != NULL)
2138                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2139 }
2140
2141 static int
2142 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2143                    struct bwi_ring_data *rd, bus_size_t size,
2144                    uint32_t txrx_ctrl)
2145 {
2146         int error;
2147
2148         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2149                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2150                                  &rd->rdata_dmap);
2151         if (error) {
2152                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2153                 return error;
2154         }
2155
2156         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2157                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2158                                 BUS_DMA_WAITOK);
2159         if (error) {
2160                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2161                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2162                 rd->rdata_desc = NULL;
2163                 return error;
2164         }
2165
2166         rd->rdata_txrx_ctrl = txrx_ctrl;
2167         return 0;
2168 }
2169
2170 static int
2171 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2172                       bus_size_t desc_sz)
2173 {
2174         struct bwi_txstats_data *st;
2175         bus_size_t dma_size;
2176         int error;
2177
2178         st = kmalloc(sizeof(*st), M_DEVBUF, M_WAITOK | M_ZERO);
2179         sc->sc_txstats = st;
2180
2181         /*
2182          * Create TX stats descriptor DMA stuffs
2183          */
2184         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2185
2186         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2187                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2188                                    NULL, NULL,
2189                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2190                                    0, &st->stats_ring_dtag);
2191         if (error) {
2192                 device_printf(sc->sc_dev, "can't create txstats ring "
2193                               "DMA tag\n");
2194                 return error;
2195         }
2196
2197         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2198                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2199                                  &st->stats_ring_dmap);
2200         if (error) {
2201                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2202                               "DMA mem\n");
2203                 bus_dma_tag_destroy(st->stats_ring_dtag);
2204                 st->stats_ring_dtag = NULL;
2205                 return error;
2206         }
2207
2208         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2209                                 st->stats_ring, dma_size,
2210                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2211                                 BUS_DMA_WAITOK);
2212         if (error) {
2213                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2214                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2215                                 st->stats_ring_dmap);
2216                 bus_dma_tag_destroy(st->stats_ring_dtag);
2217                 st->stats_ring_dtag = NULL;
2218                 return error;
2219         }
2220
2221         /*
2222          * Create TX stats DMA stuffs
2223          */
2224         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2225                            BWI_ALIGN);
2226
2227         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_ALIGN, 0,
2228                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2229                                    NULL, NULL,
2230                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2231                                    0, &st->stats_dtag);
2232         if (error) {
2233                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2234                 return error;
2235         }
2236
2237         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2238                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2239                                  &st->stats_dmap);
2240         if (error) {
2241                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2242                 bus_dma_tag_destroy(st->stats_dtag);
2243                 st->stats_dtag = NULL;
2244                 return error;
2245         }
2246
2247         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2248                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2249                                 BUS_DMA_WAITOK);
2250         if (error) {
2251                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2252                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2253                 bus_dma_tag_destroy(st->stats_dtag);
2254                 st->stats_dtag = NULL;
2255                 return error;
2256         }
2257
2258         st->stats_ctrl_base = ctrl_base;
2259         return 0;
2260 }
2261
2262 static void
2263 bwi_dma_txstats_free(struct bwi_softc *sc)
2264 {
2265         struct bwi_txstats_data *st;
2266
2267         if (sc->sc_txstats == NULL)
2268                 return;
2269         st = sc->sc_txstats;
2270
2271         if (st->stats_ring_dtag != NULL) {
2272                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2273                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2274                                 st->stats_ring_dmap);
2275                 bus_dma_tag_destroy(st->stats_ring_dtag);
2276         }
2277
2278         if (st->stats_dtag != NULL) {
2279                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2280                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2281                 bus_dma_tag_destroy(st->stats_dtag);
2282         }
2283
2284         kfree(st, M_DEVBUF);
2285 }
2286
2287 static void
2288 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2289 {
2290         KASSERT(nseg == 1, ("too many segments"));
2291         *((bus_addr_t *)arg) = seg->ds_addr;
2292 }
2293
2294 static int
2295 bwi_dma_mbuf_create(struct bwi_softc *sc)
2296 {
2297         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2298         int i, j, k, ntx, error;
2299
2300         /*
2301          * Create TX/RX mbuf DMA tag
2302          */
2303         error = bus_dma_tag_create(sc->sc_parent_dtag, 1, 0,
2304                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2305                                    NULL, NULL, MCLBYTES, 1,
2306                                    BUS_SPACE_MAXSIZE_32BIT,
2307                                    0, &sc->sc_buf_dtag);
2308         if (error) {
2309                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2310                 return error;
2311         }
2312
2313         ntx = 0;
2314
2315         /*
2316          * Create TX mbuf DMA map
2317          */
2318         for (i = 0; i < BWI_TX_NRING; ++i) {
2319                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2320
2321                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2322                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2323                                                   &tbd->tbd_buf[j].tb_dmap);
2324                         if (error) {
2325                                 device_printf(sc->sc_dev, "can't create "
2326                                               "%dth tbd, %dth DMA map\n", i, j);
2327
2328                                 ntx = i;
2329                                 for (k = 0; k < j; ++k) {
2330                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2331                                                 tbd->tbd_buf[k].tb_dmap);
2332                                 }
2333                                 goto fail;
2334                         }
2335                 }
2336         }
2337         ntx = BWI_TX_NRING;
2338
2339         /*
2340          * Create RX mbuf DMA map and a spare DMA map
2341          */
2342         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2343                                   &rbd->rbd_tmp_dmap);
2344         if (error) {
2345                 device_printf(sc->sc_dev,
2346                               "can't create spare RX buf DMA map\n");
2347                 goto fail;
2348         }
2349
2350         for (j = 0; j < BWI_RX_NDESC; ++j) {
2351                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2352                                           &rbd->rbd_buf[j].rb_dmap);
2353                 if (error) {
2354                         device_printf(sc->sc_dev, "can't create %dth "
2355                                       "RX buf DMA map\n", j);
2356
2357                         for (k = 0; k < j; ++k) {
2358                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2359                                         rbd->rbd_buf[j].rb_dmap);
2360                         }
2361                         bus_dmamap_destroy(sc->sc_buf_dtag,
2362                                            rbd->rbd_tmp_dmap);
2363                         goto fail;
2364                 }
2365         }
2366
2367         return 0;
2368 fail:
2369         bwi_dma_mbuf_destroy(sc, ntx, 0);
2370         return error;
2371 }
2372
2373 static void
2374 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2375 {
2376         int i, j;
2377
2378         if (sc->sc_buf_dtag == NULL)
2379                 return;
2380
2381         for (i = 0; i < ntx; ++i) {
2382                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2383
2384                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2385                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2386
2387                         if (tb->tb_mbuf != NULL) {
2388                                 bus_dmamap_unload(sc->sc_buf_dtag,
2389                                                   tb->tb_dmap);
2390                                 m_freem(tb->tb_mbuf);
2391                         }
2392                         if (tb->tb_ni != NULL)
2393                                 ieee80211_free_node(tb->tb_ni);
2394                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2395                 }
2396         }
2397
2398         if (nrx) {
2399                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2400
2401                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2402                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2403                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2404
2405                         if (rb->rb_mbuf != NULL) {
2406                                 bus_dmamap_unload(sc->sc_buf_dtag,
2407                                                   rb->rb_dmap);
2408                                 m_freem(rb->rb_mbuf);
2409                         }
2410                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2411                 }
2412         }
2413
2414         bus_dma_tag_destroy(sc->sc_buf_dtag);
2415         sc->sc_buf_dtag = NULL;
2416 }
2417
2418 static void
2419 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2420 {
2421         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2422 }
2423
2424 static void
2425 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2426 {
2427         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2428 }
2429
2430 static int
2431 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2432 {
2433         struct bwi_ring_data *rd;
2434         struct bwi_txbuf_data *tbd;
2435         uint32_t val, addr_hi, addr_lo;
2436
2437         KKASSERT(ring_idx < BWI_TX_NRING);
2438         rd = &sc->sc_tx_rdata[ring_idx];
2439         tbd = &sc->sc_tx_bdata[ring_idx];
2440
2441         tbd->tbd_idx = 0;
2442         tbd->tbd_used = 0;
2443
2444         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2445         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2446                         BUS_DMASYNC_PREWRITE);
2447
2448         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2449         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2450
2451         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2452               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2453                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2454         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2455
2456         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2457               BWI_TXRX32_CTRL_ENABLE;
2458         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2459
2460         return 0;
2461 }
2462
2463 static void
2464 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2465                        bus_addr_t paddr, int hdr_size, int ndesc)
2466 {
2467         uint32_t val, addr_hi, addr_lo;
2468
2469         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2470         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2471
2472         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2473               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2474                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2475         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2476
2477         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2478               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2479               BWI_TXRX32_CTRL_ENABLE;
2480         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2481
2482         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2483                     (ndesc - 1) * sizeof(struct bwi_desc32));
2484 }
2485
2486 static int
2487 bwi_init_rx_ring32(struct bwi_softc *sc)
2488 {
2489         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2490         int i, error;
2491
2492         sc->sc_rx_bdata.rbd_idx = 0;
2493
2494         for (i = 0; i < BWI_RX_NDESC; ++i) {
2495                 error = bwi_newbuf(sc, i, 1);
2496                 if (error) {
2497                         if_printf(&sc->sc_ic.ic_if,
2498                                   "can't allocate %dth RX buffer\n", i);
2499                         return error;
2500                 }
2501         }
2502         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2503                         BUS_DMASYNC_PREWRITE);
2504
2505         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2506                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2507         return 0;
2508 }
2509
2510 static int
2511 bwi_init_txstats32(struct bwi_softc *sc)
2512 {
2513         struct bwi_txstats_data *st = sc->sc_txstats;
2514         bus_addr_t stats_paddr;
2515         int i;
2516
2517         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2518         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2519
2520         st->stats_idx = 0;
2521
2522         stats_paddr = st->stats_paddr;
2523         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2524                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2525                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2526                 stats_paddr += sizeof(struct bwi_txstats);
2527         }
2528         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2529                         BUS_DMASYNC_PREWRITE);
2530
2531         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2532                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2533         return 0;
2534 }
2535
2536 static void
2537 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2538                     int buf_len)
2539 {
2540         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2541
2542         KKASSERT(buf_idx < BWI_RX_NDESC);
2543         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2544                          paddr, buf_len, 0);
2545 }
2546
2547 static void
2548 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2549                     int buf_idx, bus_addr_t paddr, int buf_len)
2550 {
2551         KKASSERT(buf_idx < BWI_TX_NDESC);
2552         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2553                          paddr, buf_len, 1);
2554 }
2555
2556 static int
2557 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2558 {
2559         /* TODO:64 */
2560         return EOPNOTSUPP;
2561 }
2562
2563 static int
2564 bwi_init_rx_ring64(struct bwi_softc *sc)
2565 {
2566         /* TODO:64 */
2567         return EOPNOTSUPP;
2568 }
2569
2570 static int
2571 bwi_init_txstats64(struct bwi_softc *sc)
2572 {
2573         /* TODO:64 */
2574         return EOPNOTSUPP;
2575 }
2576
2577 static void
2578 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2579                     int buf_len)
2580 {
2581         /* TODO:64 */
2582 }
2583
2584 static void
2585 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2586                     int buf_idx, bus_addr_t paddr, int buf_len)
2587 {
2588         /* TODO:64 */
2589 }
2590
2591 static void
2592 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2593                  bus_size_t mapsz __unused, int error)
2594 {
2595         if (!error) {
2596                 KASSERT(nseg == 1, ("too many segments(%d)", nseg));
2597                 *((bus_addr_t *)arg) = seg->ds_addr;
2598         }
2599 }
2600
2601 static int
2602 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2603 {
2604         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2605         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2606         struct bwi_rxbuf_hdr *hdr;
2607         bus_dmamap_t map;
2608         bus_addr_t paddr;
2609         struct mbuf *m;
2610         int error;
2611
2612         KKASSERT(buf_idx < BWI_RX_NDESC);
2613
2614         m = m_getcl(init ? M_WAITOK : M_NOWAIT, MT_DATA, M_PKTHDR);
2615         if (m == NULL) {
2616                 error = ENOBUFS;
2617
2618                 /*
2619                  * If the NIC is up and running, we need to:
2620                  * - Clear RX buffer's header.
2621                  * - Restore RX descriptor settings.
2622                  */
2623                 if (init)
2624                         return error;
2625                 else
2626                         goto back;
2627         }
2628         m->m_len = m->m_pkthdr.len = MCLBYTES;
2629
2630         /*
2631          * Try to load RX buf into temporary DMA map
2632          */
2633         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2634                                      bwi_dma_buf_addr, &paddr,
2635                                      init ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2636         if (error) {
2637                 m_freem(m);
2638
2639                 /*
2640                  * See the comment above
2641                  */
2642                 if (init)
2643                         return error;
2644                 else
2645                         goto back;
2646         }
2647
2648         if (!init)
2649                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2650         rxbuf->rb_mbuf = m;
2651         rxbuf->rb_paddr = paddr;
2652
2653         /*
2654          * Swap RX buf's DMA map with the loaded temporary one
2655          */
2656         map = rxbuf->rb_dmap;
2657         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2658         rbd->rbd_tmp_dmap = map;
2659
2660 back:
2661         /*
2662          * Clear RX buf header
2663          */
2664         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2665         bzero(hdr, sizeof(*hdr));
2666         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2667
2668         /*
2669          * Setup RX buf descriptor
2670          */
2671         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2672                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2673         return error;
2674 }
2675
2676 static void
2677 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2678                     const uint8_t *addr)
2679 {
2680         int i;
2681
2682         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2683                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2684
2685         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2686                 uint16_t addr_val;
2687
2688                 addr_val = (uint16_t)addr[i * 2] |
2689                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2690                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2691         }
2692 }
2693
2694 static int
2695 bwi_set_chan(struct bwi_softc *sc, struct ieee80211_channel *c)
2696 {
2697         struct ieee80211com *ic = &sc->sc_ic;
2698 #ifdef INVARIANTS
2699         struct ifnet *ifp = &ic->ic_if;
2700 #endif
2701         struct bwi_mac *mac;
2702         uint16_t flags;
2703         u_int chan;
2704
2705         ASSERT_SERIALIZED(ifp->if_serializer);
2706
2707         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
2708         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2709
2710         chan = ieee80211_chan2ieee(ic, c);
2711
2712         bwi_rf_set_chan(mac, chan, 0);
2713
2714         /*
2715          * Setup radio tap channel freq and flags
2716          */
2717         if (IEEE80211_IS_CHAN_G(c))
2718                 flags = IEEE80211_CHAN_G;
2719         else
2720                 flags = IEEE80211_CHAN_B;
2721
2722         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
2723                 htole16(c->ic_freq);
2724         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
2725                 htole16(flags);
2726
2727         return 0;
2728 }
2729
2730 static void
2731 bwi_next_scan(void *xsc)
2732 {
2733         struct bwi_softc *sc = xsc;
2734         struct ieee80211com *ic = &sc->sc_ic;
2735         struct ifnet *ifp = &ic->ic_if;
2736
2737         lwkt_serialize_enter(ifp->if_serializer);
2738
2739         if (ic->ic_state == IEEE80211_S_SCAN)
2740                 ieee80211_next_scan(ic);
2741
2742         lwkt_serialize_exit(ifp->if_serializer);
2743 }
2744
2745 static int
2746 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2747 {
2748         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2749         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2750         struct ieee80211com *ic = &sc->sc_ic;
2751         struct ifnet *ifp = &ic->ic_if;
2752         int idx, rx_data = 0;
2753
2754         idx = rbd->rbd_idx;
2755         while (idx != end_idx) {
2756                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2757                 struct bwi_rxbuf_hdr *hdr;
2758                 struct ieee80211_frame_min *wh;
2759                 struct ieee80211_node *ni;
2760                 struct mbuf *m;
2761                 const void *plcp;
2762                 uint16_t flags2;
2763                 int buflen, wh_ofs, hdr_extra, rssi, type, rate;
2764
2765                 m = rb->rb_mbuf;
2766                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2767                                 BUS_DMASYNC_POSTREAD);
2768
2769                 if (bwi_newbuf(sc, idx, 0)) {
2770                         IFNET_STAT_INC(ifp, ierrors, 1);
2771                         goto next;
2772                 }
2773
2774                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2775                 flags2 = le16toh(hdr->rxh_flags2);
2776
2777                 hdr_extra = 0;
2778                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2779                         hdr_extra = 2;
2780                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2781
2782                 buflen = le16toh(hdr->rxh_buflen);
2783                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2784                         if_printf(ifp, "short frame %d, hdr_extra %d\n",
2785                                   buflen, hdr_extra);
2786                         IFNET_STAT_INC(ifp, ierrors, 1);
2787                         m_freem(m);
2788                         goto next;
2789                 }
2790
2791                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2792                 rssi = bwi_calc_rssi(sc, hdr);
2793
2794                 m->m_pkthdr.rcvif = ifp;
2795                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2796                 m_adj(m, sizeof(*hdr) + wh_ofs);
2797
2798                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2799                         rate = bwi_ofdm_plcp2rate(plcp);
2800                 else
2801                         rate = bwi_ds_plcp2rate(plcp);
2802
2803                 /* RX radio tap */
2804                 if (sc->sc_drvbpf != NULL)
2805                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi);
2806
2807                 m_adj(m, -IEEE80211_CRC_LEN);
2808
2809                 wh = mtod(m, struct ieee80211_frame_min *);
2810                 ni = ieee80211_find_rxnode(ic, wh);
2811
2812                 type = ieee80211_input(ic, m, ni, rssi - BWI_NOISE_FLOOR,
2813                                        le16toh(hdr->rxh_tsf));
2814                 ieee80211_free_node(ni);
2815
2816                 if (type == IEEE80211_FC0_TYPE_DATA) {
2817                         rx_data = 1;
2818                         sc->sc_rx_rate = rate;
2819                 }
2820 next:
2821                 idx = (idx + 1) % BWI_RX_NDESC;
2822         }
2823
2824         rbd->rbd_idx = idx;
2825         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2826                         BUS_DMASYNC_PREWRITE);
2827         return rx_data;
2828 }
2829
2830 static int
2831 bwi_rxeof32(struct bwi_softc *sc)
2832 {
2833         uint32_t val, rx_ctrl;
2834         int end_idx, rx_data;
2835
2836         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2837
2838         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2839         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2840                   sizeof(struct bwi_desc32);
2841
2842         rx_data = bwi_rxeof(sc, end_idx);
2843
2844         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2845                     end_idx * sizeof(struct bwi_desc32));
2846
2847         return rx_data;
2848 }
2849
2850 static int
2851 bwi_rxeof64(struct bwi_softc *sc)
2852 {
2853         /* TODO:64 */
2854         return 0;
2855 }
2856
2857 static void
2858 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2859 {
2860         int i;
2861
2862         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2863
2864 #define NRETRY 10
2865
2866         for (i = 0; i < NRETRY; ++i) {
2867                 uint32_t status;
2868
2869                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2870                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2871                     BWI_RX32_STATUS_STATE_DISABLED)
2872                         break;
2873
2874                 DELAY(1000);
2875         }
2876         if (i == NRETRY)
2877                 if_printf(&sc->sc_ic.ic_if, "reset rx ring timedout\n");
2878
2879 #undef NRETRY
2880
2881         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2882 }
2883
2884 static void
2885 bwi_free_txstats32(struct bwi_softc *sc)
2886 {
2887         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2888 }
2889
2890 static void
2891 bwi_free_rx_ring32(struct bwi_softc *sc)
2892 {
2893         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2894         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2895         int i;
2896
2897         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2898
2899         for (i = 0; i < BWI_RX_NDESC; ++i) {
2900                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2901
2902                 if (rb->rb_mbuf != NULL) {
2903                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2904                         m_freem(rb->rb_mbuf);
2905                         rb->rb_mbuf = NULL;
2906                 }
2907         }
2908 }
2909
2910 static void
2911 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2912 {
2913         struct bwi_ring_data *rd;
2914         struct bwi_txbuf_data *tbd;
2915         struct ifnet *ifp = &sc->sc_ic.ic_if;
2916         uint32_t state, val;
2917         int i;
2918
2919         KKASSERT(ring_idx < BWI_TX_NRING);
2920         rd = &sc->sc_tx_rdata[ring_idx];
2921         tbd = &sc->sc_tx_bdata[ring_idx];
2922
2923 #define NRETRY 10
2924
2925         for (i = 0; i < NRETRY; ++i) {
2926                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2927                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2928                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2929                     state == BWI_TX32_STATUS_STATE_IDLE ||
2930                     state == BWI_TX32_STATUS_STATE_STOPPED)
2931                         break;
2932
2933                 DELAY(1000);
2934         }
2935         if (i == NRETRY) {
2936                 if_printf(ifp, "wait for TX ring(%d) stable timed out\n",
2937                           ring_idx);
2938         }
2939
2940         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2941         for (i = 0; i < NRETRY; ++i) {
2942                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2943                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2944                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2945                         break;
2946
2947                 DELAY(1000);
2948         }
2949         if (i == NRETRY)
2950                 if_printf(ifp, "reset TX ring (%d) timed out\n", ring_idx);
2951
2952 #undef NRETRY
2953
2954         DELAY(1000);
2955
2956         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2957
2958         for (i = 0; i < BWI_TX_NDESC; ++i) {
2959                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2960
2961                 if (tb->tb_mbuf != NULL) {
2962                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2963                         m_freem(tb->tb_mbuf);
2964                         tb->tb_mbuf = NULL;
2965                 }
2966                 if (tb->tb_ni != NULL) {
2967                         ieee80211_free_node(tb->tb_ni);
2968                         tb->tb_ni = NULL;
2969                 }
2970         }
2971 }
2972
2973 static void
2974 bwi_free_txstats64(struct bwi_softc *sc)
2975 {
2976         /* TODO:64 */
2977 }
2978
2979 static void
2980 bwi_free_rx_ring64(struct bwi_softc *sc)
2981 {
2982         /* TODO:64 */
2983 }
2984
2985 static void
2986 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
2987 {
2988         /* TODO:64 */
2989 }
2990
2991 static int
2992 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
2993           struct ieee80211_node **ni0, int mgt_pkt)
2994 {
2995         struct ieee80211com *ic = &sc->sc_ic;
2996         struct ieee80211_node *ni = *ni0;
2997         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
2998         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
2999         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3000         struct bwi_mac *mac;
3001         struct bwi_txbuf_hdr *hdr;
3002         struct ieee80211_frame *wh;
3003         uint8_t rate, rate_fb;
3004         uint32_t mac_ctrl;
3005         uint16_t phy_ctrl;
3006         bus_addr_t paddr;
3007         int pkt_len, error, mcast_pkt = 0;
3008 #if 0
3009         const uint8_t *p;
3010         int i;
3011 #endif
3012
3013         KKASSERT(ni != NULL);
3014         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3015         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3016
3017         wh = mtod(m, struct ieee80211_frame *);
3018
3019         /* Get 802.11 frame len before prepending TX header */
3020         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3021
3022         /*
3023          * Find TX rate
3024          */
3025         bzero(tb->tb_rateidx, sizeof(tb->tb_rateidx));
3026         if (!mgt_pkt) {
3027                 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
3028                         int idx;
3029
3030                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3031                                         ic->ic_fixed_rate);
3032
3033                         if (ic->ic_fixed_rate >= 1)
3034                                 idx = ic->ic_fixed_rate - 1;
3035                         else
3036                                 idx = 0;
3037                         rate_fb = IEEE80211_RS_RATE(&ni->ni_rates, idx);
3038                 } else {
3039                         tb->tb_rateidx_cnt = ieee80211_ratectl_findrate(ni,
3040                                 m->m_pkthdr.len, tb->tb_rateidx, BWI_NTXRATE);
3041
3042                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3043                                                  tb->tb_rateidx[0]);
3044                         if (tb->tb_rateidx_cnt == BWI_NTXRATE) {
3045                                 rate_fb = IEEE80211_RS_RATE(&ni->ni_rates,
3046                                                             tb->tb_rateidx[1]);
3047                         } else {
3048                                 rate_fb = rate;
3049                         }
3050                         tb->tb_buflen = m->m_pkthdr.len;
3051                 }
3052         } else {
3053                 /* Fixed at 1Mbits/s for mgt frames */
3054                 rate = rate_fb = (1 * 2);
3055         }
3056
3057         if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
3058                 rate = rate_fb = ic->ic_mcast_rate;
3059                 mcast_pkt = 1;
3060         }
3061
3062         if (rate == 0 || rate_fb == 0) {
3063                 /* XXX this should not happen */
3064                 if_printf(&ic->ic_if, "invalid rate %u or fallback rate %u",
3065                           rate, rate_fb);
3066                 rate = rate_fb = (1 * 2); /* Force 1Mbits/s */
3067         }
3068         sc->sc_tx_rate = rate;
3069
3070         /*
3071          * TX radio tap
3072          */
3073         if (sc->sc_drvbpf != NULL) {
3074                 sc->sc_tx_th.wt_flags = 0;
3075                 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
3076                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3077                 if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_DS &&
3078                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3079                     rate != (1 * 2)) {
3080                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3081                 }
3082                 sc->sc_tx_th.wt_rate = rate;
3083
3084                 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_tx_th, sc->sc_tx_th_len);
3085         }
3086
3087         /*
3088          * Setup the embedded TX header
3089          */
3090         M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
3091         if (m == NULL) {
3092                 if_printf(&ic->ic_if, "prepend TX header failed\n");
3093                 return ENOBUFS;
3094         }
3095         hdr = mtod(m, struct bwi_txbuf_hdr *);
3096
3097         bzero(hdr, sizeof(*hdr));
3098
3099         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3100         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3101
3102         if (!mcast_pkt) {
3103                 uint16_t dur;
3104                 uint8_t ack_rate;
3105
3106                 ack_rate = ieee80211_ack_rate(ni, rate_fb);
3107                 dur = ieee80211_txtime(ni,
3108                 sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN,
3109                 ack_rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
3110
3111                 hdr->txh_fb_duration = htole16(dur);
3112         }
3113
3114         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3115                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3116
3117         bwi_plcp_header(hdr->txh_plcp, pkt_len, rate);
3118         bwi_plcp_header(hdr->txh_fb_plcp, pkt_len, rate_fb);
3119
3120         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3121                              BWI_TXH_PHY_C_ANTMODE_MASK);
3122         if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_OFDM)
3123                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3124         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3125                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3126
3127         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3128         if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
3129                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3130         if (ieee80211_rate2modtype(rate_fb) == IEEE80211_MODTYPE_OFDM)
3131                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3132
3133         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3134         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3135
3136         /* Catch any further usage */
3137         hdr = NULL;
3138         wh = NULL;
3139
3140         /* DMA load */
3141         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3142                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3143         if (error && error != EFBIG) {
3144                 if_printf(&ic->ic_if, "can't load TX buffer (1) %d\n", error);
3145                 goto back;
3146         }
3147
3148         if (error) {    /* error == EFBIG */
3149                 struct mbuf *m_new;
3150
3151                 m_new = m_defrag(m, M_NOWAIT);
3152                 if (m_new == NULL) {
3153                         if_printf(&ic->ic_if, "can't defrag TX buffer\n");
3154                         error = ENOBUFS;
3155                         goto back;
3156                 } else {
3157                         m = m_new;
3158                 }
3159
3160                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3161                                              bwi_dma_buf_addr, &paddr,
3162                                              BUS_DMA_NOWAIT);
3163                 if (error) {
3164                         if_printf(&ic->ic_if, "can't load TX buffer (2) %d\n",
3165                                   error);
3166                         goto back;
3167                 }
3168         }
3169         error = 0;
3170
3171         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3172
3173         if (mgt_pkt || mcast_pkt) {
3174                 /* Don't involve mcast/mgt packets into TX rate control */
3175                 ieee80211_free_node(ni);
3176                 *ni0 = ni = NULL;
3177         }
3178         tb->tb_mbuf = m;
3179         tb->tb_ni = ni;
3180
3181 #if 0
3182         p = mtod(m, const uint8_t *);
3183         for (i = 0; i < m->m_pkthdr.len; ++i) {
3184                 if (i != 0 && i % 8 == 0)
3185                         kprintf("\n");
3186                 kprintf("%02x ", p[i]);
3187         }
3188         kprintf("\n");
3189 #endif
3190
3191         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3192                 idx, pkt_len, m->m_pkthdr.len);
3193
3194         /* Setup TX descriptor */
3195         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3196         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3197                         BUS_DMASYNC_PREWRITE);
3198
3199         /* Kick start */
3200         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3201
3202 back:
3203         if (error)
3204                 m_freem(m);
3205         return error;
3206 }
3207
3208 static void
3209 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3210 {
3211         idx = (idx + 1) % BWI_TX_NDESC;
3212         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3213                     idx * sizeof(struct bwi_desc32));
3214 }
3215
3216 static void
3217 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3218 {
3219         /* TODO:64 */
3220 }
3221
3222 static void
3223 bwi_txeof_status32(struct bwi_softc *sc)
3224 {
3225         struct ifnet *ifp = &sc->sc_ic.ic_if;
3226         uint32_t val, ctrl_base;
3227         int end_idx;
3228
3229         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3230
3231         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3232         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3233                   sizeof(struct bwi_desc32);
3234
3235         bwi_txeof_status(sc, end_idx);
3236
3237         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3238                     end_idx * sizeof(struct bwi_desc32));
3239
3240         if (!ifq_is_oactive(&ifp->if_snd))
3241                 ifp->if_start(ifp);
3242 }
3243
3244 static void
3245 bwi_txeof_status64(struct bwi_softc *sc)
3246 {
3247         /* TODO:64 */
3248 }
3249
3250 static void
3251 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3252 {
3253         struct ifnet *ifp = &sc->sc_ic.ic_if;
3254         struct bwi_txbuf_data *tbd;
3255         struct bwi_txbuf *tb;
3256         int ring_idx, buf_idx;
3257
3258         if (tx_id == 0) {
3259                 if_printf(ifp, "zero tx id\n");
3260                 return;
3261         }
3262
3263         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3264         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3265
3266         KKASSERT(ring_idx == BWI_TX_DATA_RING);
3267         KKASSERT(buf_idx < BWI_TX_NDESC);
3268
3269         tbd = &sc->sc_tx_bdata[ring_idx];
3270         KKASSERT(tbd->tbd_used > 0);
3271         tbd->tbd_used--;
3272
3273         tb = &tbd->tbd_buf[buf_idx];
3274
3275         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3276                 "acked %d, data_txcnt %d, ni %p\n",
3277                 buf_idx, acked, data_txcnt, tb->tb_ni);
3278
3279         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3280         m_freem(tb->tb_mbuf);
3281         tb->tb_mbuf = NULL;
3282
3283         if (tb->tb_ni != NULL) {
3284                 struct ieee80211_ratectl_res res[BWI_NTXRATE];
3285                 int res_len, retry;
3286
3287                 if (data_txcnt <= BWI_SHRETRY_FB || tb->tb_rateidx_cnt == 1) {
3288                         res_len = 1;
3289                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3290                         res[0].rc_res_tries = data_txcnt;
3291                 } else {
3292                         res_len = BWI_NTXRATE;
3293                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3294                         res[0].rc_res_tries = BWI_SHRETRY_FB;
3295                         res[1].rc_res_rateidx = tb->tb_rateidx[1];
3296                         res[1].rc_res_tries = data_txcnt - BWI_SHRETRY_FB;
3297                 }
3298
3299                 if (acked) {
3300                         IFNET_STAT_INC(ifp, opackets, 1);
3301                         retry = data_txcnt > 0 ? data_txcnt - 1 : 0;
3302                 } else {
3303                         IFNET_STAT_INC(ifp, oerrors, 1);
3304                         retry = data_txcnt;
3305                 }
3306
3307                 ieee80211_ratectl_tx_complete(tb->tb_ni, tb->tb_buflen,
3308                         res, res_len, retry, 0, !acked);
3309
3310                 ieee80211_free_node(tb->tb_ni);
3311                 tb->tb_ni = NULL;
3312         } else {
3313                 /* XXX mgt packet error */
3314                 IFNET_STAT_INC(ifp, opackets, 1);
3315         }
3316
3317         if (tbd->tbd_used == 0)
3318                 sc->sc_tx_timer = 0;
3319
3320         ifq_clr_oactive(&ifp->if_snd);
3321 }
3322
3323 static void
3324 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3325 {
3326         struct bwi_txstats_data *st = sc->sc_txstats;
3327         int idx;
3328
3329         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3330
3331         idx = st->stats_idx;
3332         while (idx != end_idx) {
3333                 const struct bwi_txstats *stats = &st->stats[idx];
3334
3335                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3336                         int data_txcnt;
3337
3338                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3339                                                 BWI_TXS_TXCNT_DATA);
3340                         _bwi_txeof(sc, le16toh(stats->txs_id),
3341                                    stats->txs_flags & BWI_TXS_F_ACKED,
3342                                    data_txcnt);
3343                 }
3344                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3345         }
3346         st->stats_idx = idx;
3347 }
3348
3349 static void
3350 bwi_txeof(struct bwi_softc *sc)
3351 {
3352         struct ifnet *ifp = &sc->sc_ic.ic_if;
3353
3354         for (;;) {
3355                 uint32_t tx_status0, tx_status1;
3356                 uint16_t tx_id;
3357                 int data_txcnt;
3358
3359                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3360                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3361                         break;
3362                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3363
3364                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3365                 data_txcnt = __SHIFTOUT(tx_status0,
3366                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3367
3368                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3369                         continue;
3370
3371                 _bwi_txeof(sc, tx_id, tx_status0 & BWI_TXSTATUS0_ACKED,
3372                            data_txcnt);
3373         }
3374
3375         if (!ifq_is_oactive(&ifp->if_snd))
3376                 ifp->if_start(ifp);
3377 }
3378
3379 static int
3380 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3381 {
3382         bwi_power_on(sc, 1);
3383         return bwi_set_clock_mode(sc, clk_mode);
3384 }
3385
3386 static void
3387 bwi_bbp_power_off(struct bwi_softc *sc)
3388 {
3389         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3390         bwi_power_off(sc, 1);
3391 }
3392
3393 static int
3394 bwi_get_pwron_delay(struct bwi_softc *sc)
3395 {
3396         struct bwi_regwin *com, *old;
3397         struct bwi_clock_freq freq;
3398         uint32_t val;
3399         int error;
3400
3401         com = &sc->sc_com_regwin;
3402         KKASSERT(BWI_REGWIN_EXIST(com));
3403
3404         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3405                 return 0;
3406
3407         error = bwi_regwin_switch(sc, com, &old);
3408         if (error)
3409                 return error;
3410
3411         bwi_get_clock_freq(sc, &freq);
3412
3413         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3414         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3415         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3416
3417         return bwi_regwin_switch(sc, old, NULL);
3418 }
3419
3420 static int
3421 bwi_bus_attach(struct bwi_softc *sc)
3422 {
3423         struct bwi_regwin *bus, *old;
3424         int error;
3425
3426         bus = &sc->sc_bus_regwin;
3427
3428         error = bwi_regwin_switch(sc, bus, &old);
3429         if (error)
3430                 return error;
3431
3432         if (!bwi_regwin_is_enabled(sc, bus))
3433                 bwi_regwin_enable(sc, bus, 0);
3434
3435         /* Disable interripts */
3436         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3437
3438         return bwi_regwin_switch(sc, old, NULL);
3439 }
3440
3441 static const char *
3442 bwi_regwin_name(const struct bwi_regwin *rw)
3443 {
3444         switch (rw->rw_type) {
3445         case BWI_REGWIN_T_COM:
3446                 return "COM";
3447         case BWI_REGWIN_T_BUSPCI:
3448                 return "PCI";
3449         case BWI_REGWIN_T_MAC:
3450                 return "MAC";
3451         case BWI_REGWIN_T_BUSPCIE:
3452                 return "PCIE";
3453         }
3454         panic("unknown regwin type 0x%04x", rw->rw_type);
3455         return NULL;
3456 }
3457
3458 static uint32_t
3459 bwi_regwin_disable_bits(struct bwi_softc *sc)
3460 {
3461         uint32_t busrev;
3462
3463         /* XXX cache this */
3464         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3465         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3466                 "bus rev %u\n", busrev);
3467
3468         if (busrev == BWI_BUSREV_0)
3469                 return BWI_STATE_LO_DISABLE1;
3470         else if (busrev == BWI_BUSREV_1)
3471                 return BWI_STATE_LO_DISABLE2;
3472         else
3473                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3474 }
3475
3476 int
3477 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3478 {
3479         uint32_t val, disable_bits;
3480
3481         disable_bits = bwi_regwin_disable_bits(sc);
3482         val = CSR_READ_4(sc, BWI_STATE_LO);
3483
3484         if ((val & (BWI_STATE_LO_CLOCK |
3485                     BWI_STATE_LO_RESET |
3486                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3487                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3488                         bwi_regwin_name(rw));
3489                 return 1;
3490         } else {
3491                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3492                         bwi_regwin_name(rw));
3493                 return 0;
3494         }
3495 }
3496
3497 void
3498 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3499 {
3500         uint32_t state_lo, disable_bits;
3501         int i;
3502
3503         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3504
3505         /*
3506          * If current regwin is in 'reset' state, it was already disabled.
3507          */
3508         if (state_lo & BWI_STATE_LO_RESET) {
3509                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3510                         "%s was already disabled\n", bwi_regwin_name(rw));
3511                 return;
3512         }
3513
3514         disable_bits = bwi_regwin_disable_bits(sc);
3515
3516         /*
3517          * Disable normal clock
3518          */
3519         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3520         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3521
3522         /*
3523          * Wait until normal clock is disabled
3524          */
3525 #define NRETRY  1000
3526         for (i = 0; i < NRETRY; ++i) {
3527                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3528                 if (state_lo & disable_bits)
3529                         break;
3530                 DELAY(10);
3531         }
3532         if (i == NRETRY) {
3533                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3534                               bwi_regwin_name(rw));
3535         }
3536
3537         for (i = 0; i < NRETRY; ++i) {
3538                 uint32_t state_hi;
3539
3540                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3541                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3542                         break;
3543                 DELAY(10);
3544         }
3545         if (i == NRETRY) {
3546                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3547                               bwi_regwin_name(rw));
3548         }
3549 #undef NRETRY
3550
3551         /*
3552          * Reset and disable regwin with gated clock
3553          */
3554         state_lo = BWI_STATE_LO_RESET | disable_bits |
3555                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3556                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3557         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3558
3559         /* Flush pending bus write */
3560         CSR_READ_4(sc, BWI_STATE_LO);
3561         DELAY(1);
3562
3563         /* Reset and disable regwin */
3564         state_lo = BWI_STATE_LO_RESET | disable_bits |
3565                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3566         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3567
3568         /* Flush pending bus write */
3569         CSR_READ_4(sc, BWI_STATE_LO);
3570         DELAY(1);
3571 }
3572
3573 void
3574 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3575 {
3576         uint32_t state_lo, state_hi, imstate;
3577
3578         bwi_regwin_disable(sc, rw, flags);
3579
3580         /* Reset regwin with gated clock */
3581         state_lo = BWI_STATE_LO_RESET |
3582                    BWI_STATE_LO_CLOCK |
3583                    BWI_STATE_LO_GATED_CLOCK |
3584                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3585         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3586
3587         /* Flush pending bus write */
3588         CSR_READ_4(sc, BWI_STATE_LO);
3589         DELAY(1);
3590
3591         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3592         if (state_hi & BWI_STATE_HI_SERROR)
3593                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3594
3595         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3596         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3597                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3598                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3599         }
3600
3601         /* Enable regwin with gated clock */
3602         state_lo = BWI_STATE_LO_CLOCK |
3603                    BWI_STATE_LO_GATED_CLOCK |
3604                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3605         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3606
3607         /* Flush pending bus write */
3608         CSR_READ_4(sc, BWI_STATE_LO);
3609         DELAY(1);
3610
3611         /* Enable regwin with normal clock */
3612         state_lo = BWI_STATE_LO_CLOCK |
3613                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3614         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3615
3616         /* Flush pending bus write */
3617         CSR_READ_4(sc, BWI_STATE_LO);
3618         DELAY(1);
3619 }
3620
3621 static void
3622 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3623 {
3624         struct ieee80211com *ic = &sc->sc_ic;
3625         struct bwi_mac *mac;
3626         struct bwi_myaddr_bssid buf;
3627         const uint8_t *p;
3628         uint32_t val;
3629         int n, i;
3630
3631         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3632         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3633
3634         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3635
3636         bcopy(ic->ic_myaddr, buf.myaddr, sizeof(buf.myaddr));
3637         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3638
3639         n = sizeof(buf) / sizeof(val);
3640         p = (const uint8_t *)&buf;
3641         for (i = 0; i < n; ++i) {
3642                 int j;
3643
3644                 val = 0;
3645                 for (j = 0; j < sizeof(val); ++j)
3646                         val |= ((uint32_t)(*p++)) << (j * 8);
3647
3648                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3649         }
3650 }
3651
3652 static void
3653 bwi_updateslot(struct ifnet *ifp)
3654 {
3655         struct bwi_softc *sc = ifp->if_softc;
3656         struct ieee80211com *ic = &sc->sc_ic;
3657         struct bwi_mac *mac;
3658
3659         if ((ifp->if_flags & IFF_RUNNING) == 0)
3660                 return;
3661
3662         ASSERT_SERIALIZED(ifp->if_serializer);
3663
3664         DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3665
3666         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3667         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3668
3669         bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3670 }
3671
3672 static void
3673 bwi_calibrate(void *xsc)
3674 {
3675         struct bwi_softc *sc = xsc;
3676         struct ieee80211com *ic = &sc->sc_ic;
3677         struct ifnet *ifp = &ic->ic_if;
3678
3679         lwkt_serialize_enter(ifp->if_serializer);
3680
3681         if (ic->ic_state == IEEE80211_S_RUN) {
3682                 struct bwi_mac *mac;
3683
3684                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3685                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3686
3687                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
3688                         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3689                         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3690                 }
3691
3692                 /* XXX 15 seconds */
3693                 callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3694         }
3695
3696         lwkt_serialize_exit(ifp->if_serializer);
3697 }
3698
3699 static int
3700 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3701 {
3702         struct bwi_mac *mac;
3703
3704         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3705         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3706
3707         return bwi_rf_calc_rssi(mac, hdr);
3708 }
3709
3710 static void
3711 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3712                 struct bwi_rxbuf_hdr *hdr, const void *plcp,
3713                 int rate, int rssi)
3714 {
3715         const struct ieee80211_frame_min *wh;
3716
3717         KKASSERT(sc->sc_drvbpf != NULL);
3718
3719         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3720         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3721                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3722
3723         wh = mtod(m, const struct ieee80211_frame_min *);
3724         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
3725                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3726
3727         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3728         sc->sc_rx_th.wr_rate = rate;
3729         sc->sc_rx_th.wr_antsignal = rssi;
3730         sc->sc_rx_th.wr_antnoise = BWI_NOISE_FLOOR;
3731
3732         bpf_ptap(sc->sc_drvbpf, m, &sc->sc_rx_th, sc->sc_rx_th_len);
3733 }
3734
3735 static void
3736 bwi_led_attach(struct bwi_softc *sc)
3737 {
3738         const uint8_t *led_act = NULL;
3739         uint16_t gpio, val[BWI_LED_MAX];
3740         int i;
3741
3742         for (i = 0; i < NELEM(bwi_vendor_led_act); ++i) {
3743                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3744                         led_act = bwi_vendor_led_act[i].led_act;
3745                         break;
3746                 }
3747         }
3748         if (led_act == NULL)
3749                 led_act = bwi_default_led_act;
3750
3751         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3752         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3753         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3754
3755         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3756         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3757         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3758
3759         for (i = 0; i < BWI_LED_MAX; ++i) {
3760                 struct bwi_led *led = &sc->sc_leds[i];
3761
3762                 if (val[i] == 0xff) {
3763                         led->l_act = led_act[i];
3764                 } else {
3765                         if (val[i] & BWI_LED_ACT_LOW)
3766                                 led->l_flags |= BWI_LED_F_ACTLOW;
3767                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3768                 }
3769                 led->l_mask = (1 << i);
3770
3771                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3772                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3773                     led->l_act == BWI_LED_ACT_BLINK) {
3774                         led->l_flags |= BWI_LED_F_BLINK;
3775                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3776                                 led->l_flags |= BWI_LED_F_POLLABLE;
3777                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3778                                 led->l_flags |= BWI_LED_F_SLOW;
3779
3780                         if (sc->sc_blink_led == NULL) {
3781                                 sc->sc_blink_led = led;
3782                                 if (led->l_flags & BWI_LED_F_SLOW)
3783                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3784                         }
3785                 }
3786
3787                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3788                         "%dth led, act %d, lowact %d\n", i,
3789                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3790         }
3791         callout_init(&sc->sc_led_blink_ch);
3792 }
3793
3794 static __inline uint16_t
3795 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3796 {
3797         if (led->l_flags & BWI_LED_F_ACTLOW)
3798                 on = !on;
3799         if (on)
3800                 val |= led->l_mask;
3801         else
3802                 val &= ~led->l_mask;
3803         return val;
3804 }
3805
3806 static void
3807 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3808 {
3809         struct ieee80211com *ic = &sc->sc_ic;
3810         uint16_t val;
3811         int i;
3812
3813         if (nstate == IEEE80211_S_INIT) {
3814                 callout_stop(&sc->sc_led_blink_ch);
3815                 sc->sc_led_blinking = 0;
3816         }
3817
3818         if ((ic->ic_if.if_flags & IFF_RUNNING) == 0)
3819                 return;
3820
3821         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3822         for (i = 0; i < BWI_LED_MAX; ++i) {
3823                 struct bwi_led *led = &sc->sc_leds[i];
3824                 int on;
3825
3826                 if (led->l_act == BWI_LED_ACT_UNKN ||
3827                     led->l_act == BWI_LED_ACT_NULL)
3828                         continue;
3829
3830                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3831                     nstate != IEEE80211_S_INIT)
3832                         continue;
3833
3834                 switch (led->l_act) {
3835                 case BWI_LED_ACT_ON:            /* Always on */
3836                         on = 1;
3837                         break;
3838                 case BWI_LED_ACT_OFF:           /* Always off */
3839                 case BWI_LED_ACT_5GHZ:          /* TODO: 11A */
3840                         on = 0;
3841                         break;
3842                 default:
3843                         on = 1;
3844                         switch (nstate) {
3845                         case IEEE80211_S_INIT:
3846                                 on = 0;
3847                                 break;
3848                         case IEEE80211_S_RUN:
3849                                 if (led->l_act == BWI_LED_ACT_11G &&
3850                                     ic->ic_curmode != IEEE80211_MODE_11G)
3851                                         on = 0;
3852                                 break;
3853                         default:
3854                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3855                                         on = 0;
3856                                 break;
3857                         }
3858                         break;
3859                 }
3860
3861                 val = bwi_led_onoff(led, val, on);
3862         }
3863         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3864 }
3865
3866 static void
3867 bwi_led_event(struct bwi_softc *sc, int event)
3868 {
3869         struct bwi_led *led = sc->sc_blink_led;
3870         int rate;
3871
3872         if (event == BWI_LED_EVENT_POLL) {
3873                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3874                         return;
3875                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3876                         return;
3877         }
3878
3879         sc->sc_led_ticks = ticks;
3880         if (sc->sc_led_blinking)
3881                 return;
3882
3883         switch (event) {
3884         case BWI_LED_EVENT_RX:
3885                 rate = sc->sc_rx_rate;
3886                 break;
3887         case BWI_LED_EVENT_TX:
3888                 rate = sc->sc_tx_rate;
3889                 break;
3890         case BWI_LED_EVENT_POLL:
3891                 rate = 0;
3892                 break;
3893         default:
3894                 panic("unknown LED event %d", event);
3895                 break;
3896         }
3897         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3898                             bwi_led_duration[rate].off_dur);
3899 }
3900
3901 static void
3902 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
3903 {
3904         struct bwi_led *led = sc->sc_blink_led;
3905         uint16_t val;
3906
3907         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3908         val = bwi_led_onoff(led, val, 1);
3909         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3910
3911         if (led->l_flags & BWI_LED_F_SLOW) {
3912                 BWI_LED_SLOWDOWN(on_dur);
3913                 BWI_LED_SLOWDOWN(off_dur);
3914         }
3915
3916         sc->sc_led_blinking = 1;
3917         sc->sc_led_blink_offdur = off_dur;
3918
3919         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
3920 }
3921
3922 static void
3923 bwi_led_blink_next(void *xsc)
3924 {
3925         struct bwi_softc *sc = xsc;
3926         uint16_t val;
3927
3928         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3929         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
3930         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3931
3932         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
3933                       bwi_led_blink_end, sc);
3934 }
3935
3936 static void
3937 bwi_led_blink_end(void *xsc)
3938 {
3939         struct bwi_softc *sc = xsc;
3940
3941         sc->sc_led_blinking = 0;
3942 }
3943
3944 static void *
3945 bwi_ratectl_attach(struct ieee80211com *ic, u_int rc)
3946 {
3947         struct bwi_softc *sc = ic->ic_if.if_softc;
3948
3949         switch (rc) {
3950         case IEEE80211_RATECTL_ONOE:
3951                 return &sc->sc_onoe_param;
3952         case IEEE80211_RATECTL_NONE:
3953                 /* This could only happen during detaching */
3954                 return NULL;
3955         default:
3956                 panic("unknown rate control algo %u", rc);
3957                 return NULL;
3958         }
3959 }