sys/dev/netif/bwi/if_bwi.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/dev/netif/bwi/if_bwi.c,v 1.18 2008/01/15 09:01:13 sephe Exp $
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/bitops.h>
  39 #include <sys/endian.h>
  40 #include <sys/kernel.h>
  41 #include <sys/bus.h>
  42 #include <sys/malloc.h>
  43 #include <sys/proc.h>
  44 #include <sys/rman.h>
  45 #include <sys/serialize.h>
  46 #include <sys/socket.h>
  47 #include <sys/sockio.h>
  48 #include <sys/sysctl.h>
  49
  50 #include <net/ethernet.h>
  51 #include <net/if.h>
  52 #include <net/bpf.h>
  53 #include <net/if_arp.h>
  54 #include <net/if_dl.h>
  55 #include <net/if_media.h>
  56 #include <net/ifq_var.h>
  57
  58 #include <netproto/802_11/ieee80211_radiotap.h>
  59 #include <netproto/802_11/ieee80211_var.h>
  60 #include <netproto/802_11/wlan_ratectl/onoe/ieee80211_onoe_param.h>
  61
  62 #include <bus/pci/pcireg.h>
  63 #include <bus/pci/pcivar.h>
  64 #include <bus/pci/pcidevs.h>
  65
  66 #include <dev/netif/bwi/if_bwireg.h>
  67 #include <dev/netif/bwi/if_bwivar.h>
  68 #include <dev/netif/bwi/bwimac.h>
  69 #include <dev/netif/bwi/bwirf.h>
  70
  71 struct bwi_clock_freq {
  72         u_int           clkfreq_min;
  73         u_int           clkfreq_max;
  74 };
  75
  76 struct bwi_myaddr_bssid {
  77         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  78         uint8_t         bssid[IEEE80211_ADDR_LEN];
  79 } __packed;
  80
  81 static int      bwi_probe(device_t);
  82 static int      bwi_attach(device_t);
  83 static int      bwi_detach(device_t);
  84 static int      bwi_shutdown(device_t);
  85
  86 static void     bwi_init(void *);
  87 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
  88 static void     bwi_start(struct ifnet *);
  89 static void     bwi_watchdog(struct ifnet *);
  90 static int      bwi_newstate(struct ieee80211com *, enum ieee80211_state, int);
  91 static void     bwi_updateslot(struct ifnet *);
  92 static int      bwi_media_change(struct ifnet *);
  93 static void     *bwi_ratectl_attach(struct ieee80211com *, u_int);
  94
  95 static void     bwi_next_scan(void *);
  96 static void     bwi_calibrate(void *);
  97
  98 static int      bwi_stop(struct bwi_softc *);
  99 static int      bwi_newbuf(struct bwi_softc *, int, int);
 100 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 101                           struct ieee80211_node **, int);
 102
 103 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 104                                        bus_addr_t, int, int);
 105 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 106
 107 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 108 static int      bwi_init_rx_ring32(struct bwi_softc *);
 109 static int      bwi_init_txstats32(struct bwi_softc *);
 110 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 111 static void     bwi_free_rx_ring32(struct bwi_softc *);
 112 static void     bwi_free_txstats32(struct bwi_softc *);
 113 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 114 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 115                                     int, bus_addr_t, int);
 116 static int      bwi_rxeof32(struct bwi_softc *);
 117 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 118 static void     bwi_txeof_status32(struct bwi_softc *);
 119
 120 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 121 static int      bwi_init_rx_ring64(struct bwi_softc *);
 122 static int      bwi_init_txstats64(struct bwi_softc *);
 123 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 124 static void     bwi_free_rx_ring64(struct bwi_softc *);
 125 static void     bwi_free_txstats64(struct bwi_softc *);
 126 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 127 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 128                                     int, bus_addr_t, int);
 129 static int      bwi_rxeof64(struct bwi_softc *);
 130 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 131 static void     bwi_txeof_status64(struct bwi_softc *);
 132
 133 static void     bwi_intr(void *);
 134 static int      bwi_rxeof(struct bwi_softc *, int);
 135 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 136 static void     bwi_txeof(struct bwi_softc *);
 137 static void     bwi_txeof_status(struct bwi_softc *, int);
 138 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 139 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 140 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 141 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 142                                 struct bwi_rxbuf_hdr *, const void *, int, int);
 143
 144 static int      bwi_dma_alloc(struct bwi_softc *);
 145 static void     bwi_dma_free(struct bwi_softc *);
 146 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 147                                    struct bwi_ring_data *, bus_size_t,
 148                                    uint32_t);
 149 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 150 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 151 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 152 static void     bwi_dma_txstats_free(struct bwi_softc *);
 153 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 154 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 155                                  bus_size_t, int);
 156
 157 static void     bwi_power_on(struct bwi_softc *, int);
 158 static int      bwi_power_off(struct bwi_softc *, int);
 159 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 160 static int      bwi_set_clock_delay(struct bwi_softc *);
 161 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 162 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 163 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 164                                     const uint8_t *);
 165 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 166 static int      bwi_set_chan(struct bwi_softc *, struct ieee80211_channel *);
 167
 168 static void     bwi_get_card_flags(struct bwi_softc *);
 169 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 170
 171 static int      bwi_bus_attach(struct bwi_softc *);
 172 static int      bwi_bbp_attach(struct bwi_softc *);
 173 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 174 static void     bwi_bbp_power_off(struct bwi_softc *);
 175
 176 static const char *bwi_regwin_name(const struct bwi_regwin *);
 177 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 178 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 179 static int      bwi_regwin_select(struct bwi_softc *, int);
 180
 181 static void     bwi_led_attach(struct bwi_softc *);
 182 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 183 static void     bwi_led_event(struct bwi_softc *, int);
 184 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 185 static void     bwi_led_blink_next(void *);
 186 static void     bwi_led_blink_end(void *);
 187
 188 static const struct bwi_dev {
 189         uint16_t        vid;
 190         uint16_t        did;
 191         const char      *desc;
 192 } bwi_devices[] = {
 193         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4301,
 194           "Broadcom BCM4301 802.11 Wireless Lan" },
 195
 196         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307,
 197           "Broadcom BCM4307 802.11 Wireless Lan" },
 198
 199         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4311,
 200           "Broadcom BCM4311 802.11 Wireless Lan" },
 201
 202         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4312,
 203           "Broadcom BCM4312 802.11 Wireless Lan" },
 204
 205         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_1,
 206           "Broadcom BCM4306 802.11 Wireless Lan" },
 207
 208         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2,
 209           "Broadcom BCM4306 802.11 Wireless Lan" },
 210
 211         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_3,
 212           "Broadcom BCM4306 802.11 Wireless Lan" },
 213
 214         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309,
 215           "Broadcom BCM4309 802.11 Wireless Lan" },
 216
 217         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318,
 218           "Broadcom BCM4318 802.11 Wireless Lan" },
 219
 220         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319,
 221           "Broadcom BCM4319 802.11 Wireless Lan" }
 222 };
 223
 224 static device_method_t bwi_methods[] = {
 225         DEVMETHOD(device_probe,         bwi_probe),
 226         DEVMETHOD(device_attach,        bwi_attach),
 227         DEVMETHOD(device_detach,        bwi_detach),
 228         DEVMETHOD(device_shutdown,      bwi_shutdown),
 229 #if 0
 230         DEVMETHOD(device_suspend,       bwi_suspend),
 231         DEVMETHOD(device_resume,        bwi_resume),
 232 #endif
 233         { 0, 0 }
 234 };
 235
 236 static driver_t bwi_driver = {
 237         "bwi",
 238         bwi_methods,
 239         sizeof(struct bwi_softc)
 240 };
 241
 242 static devclass_t bwi_devclass;
 243
 244 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0);
 245 DRIVER_MODULE(bwi, cardbus, bwi_driver, bwi_devclass, 0, 0);
 246
 247 MODULE_DEPEND(bwi, wlan, 1, 1, 1);
 248 MODULE_DEPEND(bwi, wlan_ratectl_onoe, 1, 1, 1);
 249 #if 0
 250 MODULE_DEPEND(bwi, wlan_ratectl_amrr, 1, 1, 1);
 251 #endif
 252 MODULE_DEPEND(bwi, pci, 1, 1, 1);
 253 MODULE_DEPEND(bwi, cardbus, 1, 1, 1);
 254
 255 static const struct {
 256         uint16_t        did_min;
 257         uint16_t        did_max;
 258         uint16_t        bbp_id;
 259 } bwi_bbpid_map[] = {
 260         { 0x4301, 0x4301, 0x4301 },
 261         { 0x4305, 0x4307, 0x4307 },
 262         { 0x4403, 0x4403, 0x4402 },
 263         { 0x4610, 0x4615, 0x4610 },
 264         { 0x4710, 0x4715, 0x4710 },
 265         { 0x4720, 0x4725, 0x4309 }
 266 };
 267
 268 static const struct {
 269         uint16_t        bbp_id;
 270         int             nregwin;
 271 } bwi_regwin_count[] = {
 272         { 0x4301, 5 },
 273         { 0x4306, 6 },
 274         { 0x4307, 5 },
 275         { 0x4310, 8 },
 276         { 0x4401, 3 },
 277         { 0x4402, 3 },
 278         { 0x4610, 9 },
 279         { 0x4704, 9 },
 280         { 0x4710, 9 },
 281         { 0x5365, 7 }
 282 };
 283
 284 #define CLKSRC(src)                             \
 285 [BWI_CLKSRC_ ## src] = {                        \
 286         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 287         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 288 }
 289
 290 static const struct {
 291         u_int   freq_min;
 292         u_int   freq_max;
 293 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 294         CLKSRC(LP_OSC),
 295         CLKSRC(CS_OSC),
 296         CLKSRC(PCI)
 297 };
 298
 299 #undef CLKSRC
 300
 301 #define VENDOR_LED_ACT(vendor)                          \
 302 {                                                       \
 303         .vid = PCI_VENDOR_##vendor,                     \
 304         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 305 }
 306
 307 static const struct {
 308         uint16_t        vid;
 309         uint8_t         led_act[BWI_LED_MAX];
 310 } bwi_vendor_led_act[] = {
 311         VENDOR_LED_ACT(COMPAQ),
 312         VENDOR_LED_ACT(LINKSYS)
 313 };
 314
 315 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 316         { BWI_VENDOR_LED_ACT_DEFAULT };
 317
 318 #undef VENDOR_LED_ACT
 319
 320 static const struct {
 321         int     on_dur;
 322         int     off_dur;
 323 } bwi_led_duration[109] = {
 324         [0]     = { 400, 100 },
 325         [2]     = { 150, 75 },
 326         [4]     = { 90, 45 },
 327         [11]    = { 66, 34 },
 328         [12]    = { 53, 26 },
 329         [18]    = { 42, 21 },
 330         [22]    = { 35, 17 },
 331         [24]    = { 32, 16 },
 332         [36]    = { 21, 10 },
 333         [48]    = { 16, 8 },
 334         [72]    = { 11, 5 },
 335         [96]    = { 9, 4 },
 336         [108]   = { 7, 3 }
 337 };
 338
 339 #ifdef BWI_DEBUG
 340 #ifdef BWI_DEBUG_VERBOSE
 341 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 342 #else
 343 static uint32_t bwi_debug;
 344 #endif
 345 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 346 #endif  /* BWI_DEBUG */
 347
 348 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 349
 350 static const struct ieee80211_rateset bwi_rateset_11b =
 351         { 4, { 2, 4, 11, 22 } };
 352 static const struct ieee80211_rateset bwi_rateset_11g =
 353         { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
 354
 355 uint16_t
 356 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 357 {
 358         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 359 }
 360
 361 static __inline void
 362 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 363                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 364                  int tx)
 365 {
 366         struct bwi_desc32 *desc = &desc_array[desc_idx];
 367         uint32_t ctrl, addr, addr_hi, addr_lo;
 368
 369         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 370         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 371
 372         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 373                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 374
 375         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 376                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 377         if (desc_idx == ndesc - 1)
 378                 ctrl |= BWI_DESC32_C_EOR;
 379         if (tx) {
 380                 /* XXX */
 381                 ctrl |= BWI_DESC32_C_FRAME_START |
 382                         BWI_DESC32_C_FRAME_END |
 383                         BWI_DESC32_C_INTR;
 384         }
 385
 386         desc->addr = htole32(addr);
 387         desc->ctrl = htole32(ctrl);
 388 }
 389
 390 /* XXX does not belong here */
 391 uint8_t
 392 bwi_rate2plcp(uint8_t rate)
 393 {
 394         rate &= IEEE80211_RATE_VAL;
 395
 396         switch (rate) {
 397         case 2:         return 0xa;
 398         case 4:         return 0x14;
 399         case 11:        return 0x37;
 400         case 22:        return 0x6e;
 401         case 44:        return 0xdc;
 402
 403         case 12:        return 0xb;
 404         case 18:        return 0xf;
 405         case 24:        return 0xa;
 406         case 36:        return 0xe;
 407         case 48:        return 0x9;
 408         case 72:        return 0xd;
 409         case 96:        return 0x8;
 410         case 108:       return 0xc;
 411
 412         default:
 413                 panic("unsupported rate %u\n", rate);
 414         }
 415 }
 416
 417 /* XXX does not belong here */
 418 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
 419 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
 420
 421 static __inline void
 422 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
 423 {
 424         uint32_t plcp;
 425
 426         plcp = __SHIFTIN(bwi_rate2plcp(rate), IEEE80211_OFDM_PLCP_RATE_MASK) |
 427                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
 428         *plcp0 = htole32(plcp);
 429 }
 430
 431 /* XXX does not belong here */
 432 struct ieee80211_ds_plcp_hdr {
 433         uint8_t         i_signal;
 434         uint8_t         i_service;
 435         uint16_t        i_length;
 436         uint16_t        i_crc;
 437 } __packed;
 438
 439 #define IEEE80211_DS_PLCP_SERVICE_LOCKED        0x04
 440 #define IEEE80211_DS_PLCL_SERVICE_PBCC          0x08
 441 #define IEEE80211_DS_PLCP_SERVICE_LENEXT5       0x20
 442 #define IEEE80211_DS_PLCP_SERVICE_LENEXT6       0x40
 443 #define IEEE80211_DS_PLCP_SERVICE_LENEXT7       0x80
 444
 445 static __inline void
 446 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
 447                    uint8_t rate)
 448 {
 449         int len, service, pkt_bitlen;
 450
 451         pkt_bitlen = pkt_len * NBBY;
 452         len = howmany(pkt_bitlen * 2, rate);
 453
 454         service = IEEE80211_DS_PLCP_SERVICE_LOCKED;
 455         if (rate == (11 * 2)) {
 456                 int pkt_bitlen1;
 457
 458                 /*
 459                  * PLCP service field needs to be adjusted,
 460                  * if TX rate is 11Mbytes/s
 461                  */
 462                 pkt_bitlen1 = len * 11;
 463                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
 464                         service |= IEEE80211_DS_PLCP_SERVICE_LENEXT7;
 465         }
 466
 467         plcp->i_signal = bwi_rate2plcp(rate);
 468         plcp->i_service = service;
 469         plcp->i_length = htole16(len);
 470         /* NOTE: do NOT touch i_crc */
 471 }
 472
 473 static __inline void
 474 bwi_plcp_header(void *plcp, int pkt_len, uint8_t rate)
 475 {
 476         enum ieee80211_modtype modtype;
 477
 478         /*
 479          * Assume caller has zeroed 'plcp'
 480          */
 481
 482         modtype = ieee80211_rate2modtype(rate);
 483         if (modtype == IEEE80211_MODTYPE_OFDM)
 484                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
 485         else if (modtype == IEEE80211_MODTYPE_DS)
 486                 bwi_ds_plcp_header(plcp, pkt_len, rate);
 487         else
 488                 panic("unsupport modulation type %u\n", modtype);
 489 }
 490
 491 static __inline uint8_t
 492 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
 493 {
 494         uint32_t plcp;
 495         uint8_t plcp_rate;
 496
 497         plcp = le32toh(*plcp0);
 498         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
 499         return ieee80211_plcp2rate(plcp_rate, 1);
 500 }
 501
 502 static __inline uint8_t
 503 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
 504 {
 505         return ieee80211_plcp2rate(hdr->i_signal, 0);
 506 }
 507
 508 static int
 509 bwi_probe(device_t dev)
 510 {
 511         const struct bwi_dev *b;
 512         uint16_t did, vid;
 513
 514         did = pci_get_device(dev);
 515         vid = pci_get_vendor(dev);
 516
 517         for (b = bwi_devices; b->desc != NULL; ++b) {
 518                 if (b->did == did && b->vid == vid) {
 519                         device_set_desc(dev, b->desc);
 520                         return 0;
 521                 }
 522         }
 523         return ENXIO;
 524 }
 525
 526 static int
 527 bwi_attach(device_t dev)
 528 {
 529         struct bwi_softc *sc = device_get_softc(dev);
 530         struct ieee80211com *ic = &sc->sc_ic;
 531         struct ifnet *ifp = &ic->ic_if;
 532         struct bwi_mac *mac;
 533         struct bwi_phy *phy;
 534         int i, error;
 535
 536         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 537         sc->sc_dev = dev;
 538
 539         /*
 540          * Initialize sysctl variables
 541          */
 542         sc->sc_fw_version = BWI_FW_VERSION3;
 543         sc->sc_dwell_time = 200;
 544         sc->sc_led_idle = (2350 * hz) / 1000;
 545         sc->sc_led_blink = 1;
 546         sc->sc_txpwr_calib = 1;
 547 #ifdef BWI_DEBUG
 548         sc->sc_debug = bwi_debug;
 549 #endif
 550
 551         callout_init(&sc->sc_scan_ch);
 552         callout_init(&sc->sc_calib_ch);
 553
 554 #ifndef BURN_BRIDGES
 555         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 556                 uint32_t irq, mem;
 557
 558                 /* XXX Save more PCIR */
 559                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 560                 mem = pci_read_config(dev, BWI_PCIR_BAR, 4);
 561
 562                 device_printf(dev, "chip is in D%d power mode "
 563                     "-- setting to D0\n", pci_get_powerstate(dev));
 564
 565                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 566
 567                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 568                 pci_write_config(dev, BWI_PCIR_BAR, mem, 4);
 569         }
 570 #endif  /* !BURN_BRIDGE */
 571
 572         pci_enable_busmaster(dev);
 573
 574         /* Get more PCI information */
 575         sc->sc_pci_revid = pci_get_revid(dev);
 576         sc->sc_pci_subvid = pci_get_subvendor(dev);
 577         sc->sc_pci_subdid = pci_get_subdevice(dev);
 578
 579         /*
 580          * Allocate IO memory
 581          */
 582         sc->sc_mem_rid = BWI_PCIR_BAR;
 583         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 584                                                 &sc->sc_mem_rid, RF_ACTIVE);
 585         if (sc->sc_mem_res == NULL) {
 586                 device_printf(dev, "can't allocate IO memory\n");
 587                 return ENXIO;
 588         }
 589         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
 590         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
 591
 592         /*
 593          * Allocate IRQ
 594          */
 595         sc->sc_irq_rid = 0;
 596         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 597                                                 &sc->sc_irq_rid,
 598                                                 RF_SHAREABLE | RF_ACTIVE);
 599         if (sc->sc_irq_res == NULL) {
 600                 device_printf(dev, "can't allocate irq\n");
 601                 error = ENXIO;
 602                 goto fail;
 603         }
 604
 605         /*
 606          * Create sysctl tree
 607          */
 608         sysctl_ctx_init(&sc->sc_sysctl_ctx);
 609         sc->sc_sysctl_tree = SYSCTL_ADD_NODE(&sc->sc_sysctl_ctx,
 610                                              SYSCTL_STATIC_CHILDREN(_hw),
 611                                              OID_AUTO,
 612                                              device_get_nameunit(dev),
 613                                              CTLFLAG_RD, 0, "");
 614         if (sc->sc_sysctl_tree == NULL) {
 615                 device_printf(dev, "can't add sysctl node\n");
 616                 error = ENXIO;
 617                 goto fail;
 618         }
 619
 620         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 621                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 622                         "dwell_time", CTLFLAG_RW, &sc->sc_dwell_time, 0,
 623                         "Channel dwell time during scan (msec)");
 624         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 625                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 626                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 627                         "Firmware version");
 628         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 629                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 630                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 631                         "# ticks before LED enters idle state");
 632         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 633                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 634                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 635                        "Allow LED to blink");
 636         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 637                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 638                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 639                        "Enable software TX power calibration");
 640 #ifdef BWI_DEBUG
 641         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 642                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 643                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 644 #endif
 645
 646         bwi_power_on(sc, 1);
 647
 648         error = bwi_bbp_attach(sc);
 649         if (error)
 650                 goto fail;
 651
 652         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 653         if (error)
 654                 goto fail;
 655
 656         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 657                 error = bwi_set_clock_delay(sc);
 658                 if (error)
 659                         goto fail;
 660
 661                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 662                 if (error)
 663                         goto fail;
 664
 665                 error = bwi_get_pwron_delay(sc);
 666                 if (error)
 667                         goto fail;
 668         }
 669
 670         error = bwi_bus_attach(sc);
 671         if (error)
 672                 goto fail;
 673
 674         bwi_get_card_flags(sc);
 675
 676         bwi_led_attach(sc);
 677
 678         for (i = 0; i < sc->sc_nmac; ++i) {
 679                 struct bwi_regwin *old;
 680
 681                 mac = &sc->sc_mac[i];
 682                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 683                 if (error)
 684                         goto fail;
 685
 686                 error = bwi_mac_lateattach(mac);
 687                 if (error)
 688                         goto fail;
 689
 690                 error = bwi_regwin_switch(sc, old, NULL);
 691                 if (error)
 692                         goto fail;
 693         }
 694
 695         /*
 696          * XXX First MAC is known to exist
 697          * TODO2
 698          */
 699         mac = &sc->sc_mac[0];
 700         phy = &mac->mac_phy;
 701
 702         bwi_bbp_power_off(sc);
 703
 704         error = bwi_dma_alloc(sc);
 705         if (error)
 706                 goto fail;
 707
 708         ifp->if_softc = sc;
 709         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 710         ifp->if_init = bwi_init;
 711         ifp->if_ioctl = bwi_ioctl;
 712         ifp->if_start = bwi_start;
 713         ifp->if_watchdog = bwi_watchdog;
 714         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 715         ifq_set_ready(&ifp->if_snd);
 716
 717         /* Get locale */
 718         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 719                                    BWI_SPROM_CARD_INFO_LOCALE);
 720         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 721
 722         /*
 723          * Setup ratesets, phytype, channels and get MAC address
 724          */
 725         if (phy->phy_mode == IEEE80211_MODE_11B ||
 726             phy->phy_mode == IEEE80211_MODE_11G) {
 727                 uint16_t chan_flags;
 728
 729                 ic->ic_sup_rates[IEEE80211_MODE_11B] = bwi_rateset_11b;
 730
 731                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 732                         chan_flags = IEEE80211_CHAN_B;
 733                         ic->ic_phytype = IEEE80211_T_DS;
 734                 } else {
 735                         chan_flags = IEEE80211_CHAN_CCK |
 736                                      IEEE80211_CHAN_OFDM |
 737                                      IEEE80211_CHAN_DYN |
 738                                      IEEE80211_CHAN_2GHZ;
 739                         ic->ic_phytype = IEEE80211_T_OFDM;
 740                         ic->ic_sup_rates[IEEE80211_MODE_11G] =
 741                                 bwi_rateset_11g;
 742                 }
 743
 744                 /* XXX depend on locale */
 745                 for (i = 1; i <= 14; ++i) {
 746                         ic->ic_channels[i].ic_freq =
 747                                 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 748                         ic->ic_channels[i].ic_flags = chan_flags;
 749                 }
 750
 751                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, ic->ic_myaddr);
 752                 if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 753                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, ic->ic_myaddr);
 754                         if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 755                                 device_printf(dev, "invalid MAC address: "
 756                                         "%6D\n", ic->ic_myaddr, ":");
 757                         }
 758                 }
 759         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 760                 /* TODO:11A */
 761                 error = ENXIO;
 762                 goto fail;
 763         } else {
 764                 panic("unknown phymode %d\n", phy->phy_mode);
 765         }
 766
 767         ic->ic_caps = IEEE80211_C_SHSLOT |
 768                       IEEE80211_C_SHPREAMBLE |
 769                       IEEE80211_C_WPA |
 770                       IEEE80211_C_MONITOR;
 771         ic->ic_state = IEEE80211_S_INIT;
 772         ic->ic_opmode = IEEE80211_M_STA;
 773
 774         IEEE80211_ONOE_PARAM_SETUP(&sc->sc_onoe_param);
 775         ic->ic_ratectl.rc_st_ratectl_cap = IEEE80211_RATECTL_CAP_ONOE;
 776         ic->ic_ratectl.rc_st_ratectl = IEEE80211_RATECTL_ONOE;
 777         ic->ic_ratectl.rc_st_attach = bwi_ratectl_attach;
 778
 779         ic->ic_updateslot = bwi_updateslot;
 780
 781         ieee80211_ifattach(ic);
 782
 783         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 784         ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
 785
 786         sc->sc_newstate = ic->ic_newstate;
 787         ic->ic_newstate = bwi_newstate;
 788
 789         ieee80211_media_init(ic, bwi_media_change, ieee80211_media_status);
 790
 791         /*
 792          * Attach radio tap
 793          */
 794         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 795                       sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
 796                       &sc->sc_drvbpf);
 797
 798         sc->sc_tx_th_len = roundup(sizeof(sc->sc_tx_th), sizeof(uint32_t));
 799         sc->sc_tx_th.wt_ihdr.it_len = htole16(sc->sc_tx_th_len);
 800         sc->sc_tx_th.wt_ihdr.it_present = htole32(BWI_TX_RADIOTAP_PRESENT);
 801
 802         sc->sc_rx_th_len = roundup(sizeof(sc->sc_rx_th), sizeof(uint32_t));
 803         sc->sc_rx_th.wr_ihdr.it_len = htole16(sc->sc_rx_th_len);
 804         sc->sc_rx_th.wr_ihdr.it_present = htole32(BWI_RX_RADIOTAP_PRESENT);
 805
 806         error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, bwi_intr, sc,
 807                                &sc->sc_irq_handle, ifp->if_serializer);
 808         if (error) {
 809                 device_printf(dev, "can't setup intr\n");
 810                 bpfdetach(ifp);
 811                 ieee80211_ifdetach(ic);
 812                 goto fail;
 813         }
 814
 815         if (bootverbose)
 816                 ieee80211_announce(ic);
 817
 818         return 0;
 819 fail:
 820         bwi_detach(dev);
 821         return error;
 822 }
 823
 824 static int
 825 bwi_detach(device_t dev)
 826 {
 827         struct bwi_softc *sc = device_get_softc(dev);
 828
 829         if (device_is_attached(dev)) {
 830                 struct ifnet *ifp = &sc->sc_ic.ic_if;
 831                 int i;
 832
 833                 lwkt_serialize_enter(ifp->if_serializer);
 834                 bwi_stop(sc);
 835                 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 836                 lwkt_serialize_exit(ifp->if_serializer);
 837
 838                 bpfdetach(ifp);
 839                 ieee80211_ifdetach(&sc->sc_ic);
 840
 841                 for (i = 0; i < sc->sc_nmac; ++i)
 842                         bwi_mac_detach(&sc->sc_mac[i]);
 843         }
 844
 845         if (sc->sc_sysctl_tree != NULL)
 846                 sysctl_ctx_free(&sc->sc_sysctl_ctx);
 847
 848         if (sc->sc_irq_res != NULL) {
 849                 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
 850                                      sc->sc_irq_res);
 851         }
 852
 853         if (sc->sc_mem_res != NULL) {
 854                 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid,
 855                                      sc->sc_mem_res);
 856         }
 857
 858         bwi_dma_free(sc);
 859
 860         return 0;
 861 }
 862
 863 static int
 864 bwi_shutdown(device_t dev)
 865 {
 866         struct bwi_softc *sc = device_get_softc(dev);
 867         struct ifnet *ifp = &sc->sc_ic.ic_if;
 868
 869         lwkt_serialize_enter(ifp->if_serializer);
 870         bwi_stop(sc);
 871         lwkt_serialize_exit(ifp->if_serializer);
 872         return 0;
 873 }
 874
 875 static void
 876 bwi_power_on(struct bwi_softc *sc, int with_pll)
 877 {
 878         uint32_t gpio_in, gpio_out, gpio_en;
 879         uint16_t status;
 880
 881         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 882         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 883                 goto back;
 884
 885         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 886         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 887
 888         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 889         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 890         if (with_pll) {
 891                 /* Turn off PLL first */
 892                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 893                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 894         }
 895
 896         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 897         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 898         DELAY(1000);
 899
 900         if (with_pll) {
 901                 /* Turn on PLL */
 902                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 903                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 904                 DELAY(5000);
 905         }
 906
 907 back:
 908         /* Clear "Signaled Target Abort" */
 909         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 910         status &= ~PCIM_STATUS_STABORT;
 911         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 912 }
 913
 914 static int
 915 bwi_power_off(struct bwi_softc *sc, int with_pll)
 916 {
 917         uint32_t gpio_out, gpio_en;
 918
 919         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 920         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 921         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 922
 923         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 924         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 925         if (with_pll) {
 926                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 927                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 928         }
 929
 930         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 931         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 932         return 0;
 933 }
 934
 935 int
 936 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 937                   struct bwi_regwin **old_rw)
 938 {
 939         int error;
 940
 941         if (old_rw != NULL)
 942                 *old_rw = NULL;
 943
 944         if (!BWI_REGWIN_EXIST(rw))
 945                 return EINVAL;
 946
 947         if (sc->sc_cur_regwin != rw) {
 948                 error = bwi_regwin_select(sc, rw->rw_id);
 949                 if (error) {
 950                         if_printf(&sc->sc_ic.ic_if, "can't select regwin %d\n",
 951                                   rw->rw_id);
 952                         return error;
 953                 }
 954         }
 955
 956         if (old_rw != NULL)
 957                 *old_rw = sc->sc_cur_regwin;
 958         sc->sc_cur_regwin = rw;
 959         return 0;
 960 }
 961
 962 static int
 963 bwi_regwin_select(struct bwi_softc *sc, int id)
 964 {
 965         uint32_t win = BWI_PCIM_REGWIN(id);
 966         int i;
 967
 968 #define RETRY_MAX       50
 969         for (i = 0; i < RETRY_MAX; ++i) {
 970                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 971                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 972                         return 0;
 973                 DELAY(10);
 974         }
 975 #undef RETRY_MAX
 976
 977         return ENXIO;
 978 }
 979
 980 static void
 981 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 982 {
 983         uint32_t val;
 984
 985         val = CSR_READ_4(sc, BWI_ID_HI);
 986         *type = BWI_ID_HI_REGWIN_TYPE(val);
 987         *rev = BWI_ID_HI_REGWIN_REV(val);
 988
 989         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 990                 "vendor 0x%04x\n", *type, *rev,
 991                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 992 }
 993
 994 static int
 995 bwi_bbp_attach(struct bwi_softc *sc)
 996 {
 997 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
 998         uint16_t bbp_id, rw_type;
 999         uint8_t rw_rev;
1000         uint32_t info;
1001         int error, nregwin, i;
1002
1003         /*
1004          * Get 0th regwin information
1005          * NOTE: 0th regwin should exist
1006          */
1007         error = bwi_regwin_select(sc, 0);
1008         if (error) {
1009                 device_printf(sc->sc_dev, "can't select regwin 0\n");
1010                 return error;
1011         }
1012         bwi_regwin_info(sc, &rw_type, &rw_rev);
1013
1014         /*
1015          * Find out BBP id
1016          */
1017         bbp_id = 0;
1018         info = 0;
1019         if (rw_type == BWI_REGWIN_T_COM) {
1020                 info = CSR_READ_4(sc, BWI_INFO);
1021                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
1022
1023                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
1024
1025                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
1026         } else {
1027                 uint16_t did = pci_get_device(sc->sc_dev);
1028                 uint8_t revid = pci_get_revid(sc->sc_dev);
1029
1030                 for (i = 0; i < N(bwi_bbpid_map); ++i) {
1031                         if (did >= bwi_bbpid_map[i].did_min &&
1032                             did <= bwi_bbpid_map[i].did_max) {
1033                                 bbp_id = bwi_bbpid_map[i].bbp_id;
1034                                 break;
1035                         }
1036                 }
1037                 if (bbp_id == 0) {
1038                         device_printf(sc->sc_dev, "no BBP id for device id "
1039                                       "0x%04x\n", did);
1040                         return ENXIO;
1041                 }
1042
1043                 info = __SHIFTIN(revid, BWI_INFO_BBPREV_MASK) |
1044                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
1045         }
1046
1047         /*
1048          * Find out number of regwins
1049          */
1050         nregwin = 0;
1051         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
1052                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
1053         } else {
1054                 for (i = 0; i < N(bwi_regwin_count); ++i) {
1055                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
1056                                 nregwin = bwi_regwin_count[i].nregwin;
1057                                 break;
1058                         }
1059                 }
1060                 if (nregwin == 0) {
1061                         device_printf(sc->sc_dev, "no number of win for "
1062                                       "BBP id 0x%04x\n", bbp_id);
1063                         return ENXIO;
1064                 }
1065         }
1066
1067         /* Record BBP id/rev for later using */
1068         sc->sc_bbp_id = bbp_id;
1069         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
1070         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
1071         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
1072                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
1073
1074         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
1075                 nregwin, sc->sc_cap);
1076
1077         /*
1078          * Create rest of the regwins
1079          */
1080
1081         /* Don't re-create common regwin, if it is already created */
1082         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
1083
1084         for (; i < nregwin; ++i) {
1085                 /*
1086                  * Get regwin information
1087                  */
1088                 error = bwi_regwin_select(sc, i);
1089                 if (error) {
1090                         device_printf(sc->sc_dev,
1091                                       "can't select regwin %d\n", i);
1092                         return error;
1093                 }
1094                 bwi_regwin_info(sc, &rw_type, &rw_rev);
1095
1096                 /*
1097                  * Try attach:
1098                  * 1) Bus (PCI/PCIE) regwin
1099                  * 2) MAC regwin
1100                  * Ignore rest types of regwin
1101                  */
1102                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
1103                     rw_type == BWI_REGWIN_T_BUSPCIE) {
1104                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1105                                 device_printf(sc->sc_dev,
1106                                               "bus regwin already exists\n");
1107                         } else {
1108                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
1109                                                   rw_type, rw_rev);
1110                         }
1111                 } else if (rw_type == BWI_REGWIN_T_MAC) {
1112                         /* XXX ignore return value */
1113                         bwi_mac_attach(sc, i, rw_rev);
1114                 }
1115         }
1116
1117         /* At least one MAC shold exist */
1118         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
1119                 device_printf(sc->sc_dev, "no MAC was found\n");
1120                 return ENXIO;
1121         }
1122         KKASSERT(sc->sc_nmac > 0);
1123
1124         /* Bus regwin must exist */
1125         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1126                 device_printf(sc->sc_dev, "no bus regwin was found\n");
1127                 return ENXIO;
1128         }
1129
1130         /* Start with first MAC */
1131         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
1132         if (error)
1133                 return error;
1134
1135         return 0;
1136 #undef N
1137 }
1138
1139 int
1140 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
1141 {
1142         struct bwi_regwin *old, *bus;
1143         uint32_t val;
1144         int error;
1145
1146         bus = &sc->sc_bus_regwin;
1147         KKASSERT(sc->sc_cur_regwin == &mac->mac_regwin);
1148
1149         /*
1150          * Tell bus to generate requested interrupts
1151          */
1152         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1153                 /*
1154                  * NOTE: Read BWI_FLAGS from MAC regwin
1155                  */
1156                 val = CSR_READ_4(sc, BWI_FLAGS);
1157
1158                 error = bwi_regwin_switch(sc, bus, &old);
1159                 if (error)
1160                         return error;
1161
1162                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
1163         } else {
1164                 uint32_t mac_mask;
1165
1166                 mac_mask = 1 << mac->mac_id;
1167
1168                 error = bwi_regwin_switch(sc, bus, &old);
1169                 if (error)
1170                         return error;
1171
1172                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
1173                 val |= mac_mask << 8;
1174                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
1175         }
1176
1177         if (sc->sc_flags & BWI_F_BUS_INITED)
1178                 goto back;
1179
1180         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1181                 /*
1182                  * Enable prefetch and burst
1183                  */
1184                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
1185                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
1186
1187                 if (bus->rw_rev < 5) {
1188                         struct bwi_regwin *com = &sc->sc_com_regwin;
1189
1190                         /*
1191                          * Configure timeouts for bus operation
1192                          */
1193
1194                         /*
1195                          * Set service timeout and request timeout
1196                          */
1197                         CSR_SETBITS_4(sc, BWI_CONF_LO,
1198                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
1199                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
1200
1201                         /*
1202                          * If there is common regwin, we switch to that regwin
1203                          * and switch back to bus regwin once we have done.
1204                          */
1205                         if (BWI_REGWIN_EXIST(com)) {
1206                                 error = bwi_regwin_switch(sc, com, NULL);
1207                                 if (error)
1208                                         return error;
1209                         }
1210
1211                         /* Let bus know what we have changed */
1212                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
1213                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
1214                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
1215                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
1216
1217                         if (BWI_REGWIN_EXIST(com)) {
1218                                 error = bwi_regwin_switch(sc, bus, NULL);
1219                                 if (error)
1220                                         return error;
1221                         }
1222                 } else if (bus->rw_rev >= 11) {
1223                         /*
1224                          * Enable memory read multiple
1225                          */
1226                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1227                 }
1228         } else {
1229                 /* TODO:PCIE */
1230         }
1231
1232         sc->sc_flags |= BWI_F_BUS_INITED;
1233 back:
1234         return bwi_regwin_switch(sc, old, NULL);
1235 }
1236
1237 static void
1238 bwi_get_card_flags(struct bwi_softc *sc)
1239 {
1240         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1241         if (sc->sc_card_flags == 0xffff)
1242                 sc->sc_card_flags = 0;
1243
1244         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1245             sc->sc_pci_subdid == 0x4e && /* XXX */
1246             sc->sc_pci_revid > 0x40)
1247                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1248
1249         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1250 }
1251
1252 static void
1253 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1254 {
1255         int i;
1256
1257         for (i = 0; i < 3; ++i) {
1258                 *((uint16_t *)eaddr + i) =
1259                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1260         }
1261 }
1262
1263 static void
1264 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1265 {
1266         struct bwi_regwin *com;
1267         uint32_t val;
1268         u_int div;
1269         int src;
1270
1271         bzero(freq, sizeof(*freq));
1272         com = &sc->sc_com_regwin;
1273
1274         KKASSERT(BWI_REGWIN_EXIST(com));
1275         KKASSERT(sc->sc_cur_regwin == com);
1276         KKASSERT(sc->sc_cap & BWI_CAP_CLKMODE);
1277
1278         /*
1279          * Calculate clock frequency
1280          */
1281         src = -1;
1282         div = 0;
1283         if (com->rw_rev < 6) {
1284                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1285                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1286                         src = BWI_CLKSRC_PCI;
1287                         div = 64;
1288                 } else {
1289                         src = BWI_CLKSRC_CS_OSC;
1290                         div = 32;
1291                 }
1292         } else if (com->rw_rev < 10) {
1293                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1294
1295                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1296                 if (src == BWI_CLKSRC_LP_OSC) {
1297                         div = 1;
1298                 } else {
1299                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1300
1301                         /* Unknown source */
1302                         if (src >= BWI_CLKSRC_MAX)
1303                                 src = BWI_CLKSRC_CS_OSC;
1304                 }
1305         } else {
1306                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1307
1308                 src = BWI_CLKSRC_CS_OSC;
1309                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1310         }
1311
1312         KKASSERT(src >= 0 && src < BWI_CLKSRC_MAX);
1313         KKASSERT(div != 0);
1314
1315         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1316                 src == BWI_CLKSRC_PCI ? "PCI" :
1317                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1318
1319         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1320         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1321
1322         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1323                 freq->clkfreq_min, freq->clkfreq_max);
1324 }
1325
1326 static int
1327 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1328 {
1329         struct bwi_regwin *old, *com;
1330         uint32_t clk_ctrl, clk_src;
1331         int error, pwr_off = 0;
1332
1333         com = &sc->sc_com_regwin;
1334         if (!BWI_REGWIN_EXIST(com))
1335                 return 0;
1336
1337         if (com->rw_rev >= 10 || com->rw_rev < 6)
1338                 return 0;
1339
1340         /*
1341          * For common regwin whose rev is [6, 10), the chip
1342          * must be capable to change clock mode.
1343          */
1344         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1345                 return 0;
1346
1347         error = bwi_regwin_switch(sc, com, &old);
1348         if (error)
1349                 return error;
1350
1351         if (clk_mode == BWI_CLOCK_MODE_FAST)
1352                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1353
1354         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1355         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1356
1357         switch (clk_mode) {
1358         case BWI_CLOCK_MODE_FAST:
1359                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1360                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1361                 break;
1362         case BWI_CLOCK_MODE_SLOW:
1363                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1364                 break;
1365         case BWI_CLOCK_MODE_DYN:
1366                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1367                               BWI_CLOCK_CTRL_IGNPLL |
1368                               BWI_CLOCK_CTRL_NODYN);
1369                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1370                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1371                         pwr_off = 1;
1372                 }
1373                 break;
1374         }
1375         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1376
1377         if (pwr_off)
1378                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1379
1380         return bwi_regwin_switch(sc, old, NULL);
1381 }
1382
1383 static int
1384 bwi_set_clock_delay(struct bwi_softc *sc)
1385 {
1386         struct bwi_regwin *old, *com;
1387         int error;
1388
1389         com = &sc->sc_com_regwin;
1390         if (!BWI_REGWIN_EXIST(com))
1391                 return 0;
1392
1393         error = bwi_regwin_switch(sc, com, &old);
1394         if (error)
1395                 return error;
1396
1397         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1398                 if (sc->sc_bbp_rev == 0)
1399                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1400                 else if (sc->sc_bbp_rev == 1)
1401                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1402         }
1403
1404         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1405                 if (com->rw_rev >= 10) {
1406                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1407                 } else {
1408                         struct bwi_clock_freq freq;
1409
1410                         bwi_get_clock_freq(sc, &freq);
1411                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1412                                 howmany(freq.clkfreq_max * 150, 1000000));
1413                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1414                                 howmany(freq.clkfreq_max * 15, 1000000));
1415                 }
1416         }
1417
1418         return bwi_regwin_switch(sc, old, NULL);
1419 }
1420
1421 static void
1422 bwi_init(void *xsc)
1423 {
1424         struct bwi_softc *sc = xsc;
1425         struct ieee80211com *ic = &sc->sc_ic;
1426         struct ifnet *ifp = &ic->ic_if;
1427         struct bwi_mac *mac;
1428         int error;
1429
1430         ASSERT_SERIALIZED(ifp->if_serializer);
1431
1432         error = bwi_stop(sc);
1433         if (error) {
1434                 if_printf(ifp, "can't stop\n");
1435                 return;
1436         }
1437
1438         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1439
1440         /* TODO: 2 MAC */
1441
1442         mac = &sc->sc_mac[0];
1443         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1444         if (error)
1445                 goto back;
1446
1447         error = bwi_mac_init(mac);
1448         if (error)
1449                 goto back;
1450
1451         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1452
1453         bcopy(IF_LLADDR(ifp), ic->ic_myaddr, sizeof(ic->ic_myaddr));
1454
1455         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1456         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, ic->ic_myaddr);
1457
1458         bwi_mac_reset_hwkeys(mac);
1459
1460         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1461                 int i;
1462
1463 #define NRETRY  1000
1464                 /*
1465                  * Drain any possible pending TX status
1466                  */
1467                 for (i = 0; i < NRETRY; ++i) {
1468                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1469                              BWI_TXSTATUS0_VALID) == 0)
1470                                 break;
1471                         CSR_READ_4(sc, BWI_TXSTATUS1);
1472                 }
1473                 if (i == NRETRY)
1474                         if_printf(ifp, "can't drain TX status\n");
1475 #undef NRETRY
1476         }
1477
1478         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1479                 bwi_mac_updateslot(mac, 1);
1480
1481         /* Start MAC */
1482         error = bwi_mac_start(mac);
1483         if (error)
1484                 goto back;
1485
1486         /* Enable intrs */
1487         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1488
1489         ifp->if_flags |= IFF_RUNNING;
1490         ifp->if_flags &= ~IFF_OACTIVE;
1491
1492         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
1493                 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
1494                         ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
1495         } else {
1496                 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1497         }
1498 back:
1499         if (error)
1500                 bwi_stop(sc);
1501 }
1502
1503 static int
1504 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t req, struct ucred *cr)
1505 {
1506         struct bwi_softc *sc = ifp->if_softc;
1507         int error = 0;
1508
1509         ASSERT_SERIALIZED(ifp->if_serializer);
1510
1511         switch (cmd) {
1512         case SIOCSIFFLAGS:
1513                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1514                     (IFF_UP | IFF_RUNNING)) {
1515                         struct bwi_mac *mac;
1516                         int promisc = -1;
1517
1518                         KKASSERT(sc->sc_cur_regwin->rw_type ==
1519                                  BWI_REGWIN_T_MAC);
1520                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1521
1522                         if ((ifp->if_flags & IFF_PROMISC) &&
1523                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1524                                 promisc = 1;
1525                                 sc->sc_flags |= BWI_F_PROMISC;
1526                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1527                                    (sc->sc_flags & BWI_F_PROMISC)) {
1528                                 promisc = 0;
1529                                 sc->sc_flags &= ~BWI_F_PROMISC;
1530                         }
1531
1532                         if (promisc >= 0)
1533                                 bwi_mac_set_promisc(mac, promisc);
1534                 }
1535
1536                 if (ifp->if_flags & IFF_UP) {
1537                         if ((ifp->if_flags & IFF_RUNNING) == 0)
1538                                 bwi_init(sc);
1539                 } else {
1540                         if (ifp->if_flags & IFF_RUNNING)
1541                                 bwi_stop(sc);
1542                 }
1543                 break;
1544         default:
1545                 error = ieee80211_ioctl(&sc->sc_ic, cmd, req, cr);
1546                 break;
1547         }
1548
1549         if (error == ENETRESET) {
1550                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1551                     (IFF_UP | IFF_RUNNING))
1552                         bwi_init(sc);
1553                 error = 0;
1554         }
1555         return error;
1556 }
1557
1558 static void
1559 bwi_start(struct ifnet *ifp)
1560 {
1561         struct bwi_softc *sc = ifp->if_softc;
1562         struct ieee80211com *ic = &sc->sc_ic;
1563         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1564         int trans, idx;
1565
1566         ASSERT_SERIALIZED(ifp->if_serializer);
1567
1568         if ((ifp->if_flags & IFF_OACTIVE) ||
1569             (ifp->if_flags & IFF_RUNNING) == 0)
1570                 return;
1571
1572         trans = 0;
1573         idx = tbd->tbd_idx;
1574
1575         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1576                 struct ieee80211_frame *wh;
1577                 struct ieee80211_node *ni;
1578                 struct mbuf *m;
1579                 int mgt_pkt = 0;
1580
1581                 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1582                         IF_DEQUEUE(&ic->ic_mgtq, m);
1583
1584                         ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1585                         m->m_pkthdr.rcvif = NULL;
1586
1587                         mgt_pkt = 1;
1588                 } else if (!ifq_is_empty(&ifp->if_snd)) {
1589                         struct ether_header *eh;
1590
1591                         if (ic->ic_state != IEEE80211_S_RUN)
1592                                 break;
1593
1594                         m = ifq_dequeue(&ifp->if_snd, NULL);
1595                         if (m == NULL)
1596                                 break;
1597
1598                         if (m->m_len < sizeof(*eh)) {
1599                                 m = m_pullup(m, sizeof(*eh));
1600                                 if (m == NULL) {
1601                                         ifp->if_oerrors++;
1602                                         continue;
1603                                 }
1604                         }
1605                         eh = mtod(m, struct ether_header *);
1606
1607                         ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1608                         if (ni == NULL) {
1609                                 m_freem(m);
1610                                 ifp->if_oerrors++;
1611                                 continue;
1612                         }
1613
1614                         /* TODO: PS */
1615
1616                         BPF_MTAP(ifp, m);
1617
1618                         m = ieee80211_encap(ic, m, ni);
1619                         if (m == NULL) {
1620                                 ieee80211_free_node(ni);
1621                                 ifp->if_oerrors++;
1622                                 continue;
1623                         }
1624                 } else {
1625                         break;
1626                 }
1627
1628                 if (ic->ic_rawbpf != NULL)
1629                         bpf_mtap(ic->ic_rawbpf, m);
1630
1631                 wh = mtod(m, struct ieee80211_frame *);
1632                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1633                         if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1634                                 ieee80211_free_node(ni);
1635                                 m_freem(m);
1636                                 ifp->if_oerrors++;
1637                                 continue;
1638                         }
1639                 }
1640                 wh = NULL;      /* Catch any invalid use */
1641
1642                 if (bwi_encap(sc, idx, m, &ni, mgt_pkt) != 0) {
1643                         /* 'm' is freed in bwi_encap() if we reach here */
1644                         if (ni != NULL)
1645                                 ieee80211_free_node(ni);
1646                         ifp->if_oerrors++;
1647                         continue;
1648                 }
1649
1650                 trans = 1;
1651                 tbd->tbd_used++;
1652                 idx = (idx + 1) % BWI_TX_NDESC;
1653
1654                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1655                         ifp->if_flags |= IFF_OACTIVE;
1656                         break;
1657                 }
1658         }
1659         tbd->tbd_idx = idx;
1660
1661         if (trans)
1662                 sc->sc_tx_timer = 5;
1663         ifp->if_timer = 1;
1664 }
1665
1666 static void
1667 bwi_watchdog(struct ifnet *ifp)
1668 {
1669         struct bwi_softc *sc = ifp->if_softc;
1670
1671         ASSERT_SERIALIZED(ifp->if_serializer);
1672
1673         ifp->if_timer = 0;
1674
1675         if ((ifp->if_flags & IFF_RUNNING) == 0)
1676                 return;
1677
1678         if (sc->sc_tx_timer) {
1679                 if (--sc->sc_tx_timer == 0) {
1680                         if_printf(ifp, "watchdog timeout\n");
1681                         ifp->if_oerrors++;
1682                         /* TODO */
1683                 } else {
1684                         ifp->if_timer = 1;
1685                 }
1686         }
1687         ieee80211_watchdog(&sc->sc_ic);
1688 }
1689
1690 static int
1691 bwi_stop(struct bwi_softc *sc)
1692 {
1693         struct ieee80211com *ic = &sc->sc_ic;
1694         struct ifnet *ifp = &ic->ic_if;
1695         struct bwi_mac *mac;
1696         int i, error, pwr_off = 0;
1697
1698         ASSERT_SERIALIZED(ifp->if_serializer);
1699
1700         ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
1701
1702         if (ifp->if_flags & IFF_RUNNING) {
1703                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1704                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1705
1706                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1707                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1708                 bwi_mac_stop(mac);
1709         }
1710
1711         for (i = 0; i < sc->sc_nmac; ++i) {
1712                 struct bwi_regwin *old_rw;
1713
1714                 mac = &sc->sc_mac[i];
1715                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1716                         continue;
1717
1718                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1719                 if (error)
1720                         continue;
1721
1722                 bwi_mac_shutdown(mac);
1723                 pwr_off = 1;
1724
1725                 bwi_regwin_switch(sc, old_rw, NULL);
1726         }
1727
1728         if (pwr_off)
1729                 bwi_bbp_power_off(sc);
1730
1731         sc->sc_tx_timer = 0;
1732         ifp->if_timer = 0;
1733         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1734         return 0;
1735 }
1736
1737 static void
1738 bwi_intr(void *xsc)
1739 {
1740         struct bwi_softc *sc = xsc;
1741         struct ifnet *ifp = &sc->sc_ic.ic_if;
1742         uint32_t intr_status;
1743         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1744         int i, txrx_error, tx = 0, rx_data = -1;
1745
1746         ASSERT_SERIALIZED(ifp->if_serializer);
1747
1748         if ((ifp->if_flags & IFF_RUNNING) == 0)
1749                 return;
1750
1751         /*
1752          * Get interrupt status
1753          */
1754         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1755         if (intr_status == 0xffffffff)  /* Not for us */
1756                 return;
1757
1758         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1759
1760         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1761         if (intr_status == 0)           /* Nothing is interesting */
1762                 return;
1763
1764         txrx_error = 0;
1765         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1766         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1767                 uint32_t mask;
1768
1769                 if (BWI_TXRX_IS_RX(i))
1770                         mask = BWI_TXRX_RX_INTRS;
1771                 else
1772                         mask = BWI_TXRX_TX_INTRS;
1773
1774                 txrx_intr_status[i] =
1775                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1776
1777                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1778                          i, txrx_intr_status[i]);
1779
1780                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1781                         if_printf(ifp, "intr fatal TX/RX (%d) error 0x%08x\n",
1782                                   i, txrx_intr_status[i]);
1783                         txrx_error = 1;
1784                 }
1785         }
1786         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1787
1788         /*
1789          * Acknowledge interrupt
1790          */
1791         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1792
1793         for (i = 0; i < BWI_TXRX_NRING; ++i)
1794                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1795
1796         /* Disable all interrupts */
1797         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1798
1799         if (intr_status & BWI_INTR_PHY_TXERR)
1800                 if_printf(ifp, "intr PHY TX error\n");
1801
1802         if (txrx_error) {
1803                 /* TODO: reset device */
1804         }
1805
1806         if (intr_status & BWI_INTR_TBTT) {
1807                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1808                 bwi_mac_config_ps((struct bwi_mac *)sc->sc_cur_regwin);
1809         }
1810
1811         if (intr_status & BWI_INTR_EO_ATIM)
1812                 if_printf(ifp, "EO_ATIM\n");
1813
1814         if (intr_status & BWI_INTR_PMQ) {
1815                 for (;;) {
1816                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1817                                 break;
1818                 }
1819                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1820         }
1821
1822         if (intr_status & BWI_INTR_NOISE)
1823                 if_printf(ifp, "intr noise\n");
1824
1825         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX)
1826                 rx_data = sc->sc_rxeof(sc);
1827
1828         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1829                 sc->sc_txeof_status(sc);
1830                 tx = 1;
1831         }
1832
1833         if (intr_status & BWI_INTR_TX_DONE) {
1834                 bwi_txeof(sc);
1835                 tx = 1;
1836         }
1837
1838         /* Re-enable interrupts */
1839         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1840
1841         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1842                 int evt = BWI_LED_EVENT_NONE;
1843
1844                 if (tx && rx_data > 0) {
1845                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1846                                 evt = BWI_LED_EVENT_RX;
1847                         else
1848                                 evt = BWI_LED_EVENT_TX;
1849                 } else if (tx) {
1850                         evt = BWI_LED_EVENT_TX;
1851                 } else if (rx_data > 0) {
1852                         evt = BWI_LED_EVENT_RX;
1853                 } else if (rx_data == 0) {
1854                         evt = BWI_LED_EVENT_POLL;
1855                 }
1856
1857                 if (evt != BWI_LED_EVENT_NONE)
1858                         bwi_led_event(sc, evt);
1859         }
1860 }
1861
1862 static int
1863 bwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1864 {
1865         struct bwi_softc *sc = ic->ic_if.if_softc;
1866         struct ifnet *ifp = &ic->ic_if;
1867         int error;
1868
1869         ASSERT_SERIALIZED(ifp->if_serializer);
1870
1871         callout_stop(&sc->sc_scan_ch);
1872         callout_stop(&sc->sc_calib_ch);
1873
1874         ieee80211_ratectl_newstate(ic, nstate);
1875         bwi_led_newstate(sc, nstate);
1876
1877         if (nstate == IEEE80211_S_INIT)
1878                 goto back;
1879
1880         error = bwi_set_chan(sc, ic->ic_curchan);
1881         if (error) {
1882                 if_printf(ifp, "can't set channel to %u\n",
1883                           ieee80211_chan2ieee(ic, ic->ic_curchan));
1884                 return error;
1885         }
1886
1887         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1888                 /* Nothing to do */
1889         } else if (nstate == IEEE80211_S_RUN) {
1890                 struct bwi_mac *mac;
1891
1892                 bwi_set_bssid(sc, ic->ic_bss->ni_bssid);
1893
1894                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1895                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1896
1897                 /* Initial TX power calibration */
1898                 bwi_mac_calibrate_txpower(mac);
1899         } else {
1900                 bwi_set_bssid(sc, bwi_zero_addr);
1901         }
1902
1903 back:
1904         error = sc->sc_newstate(ic, nstate, arg);
1905
1906         if (nstate == IEEE80211_S_SCAN) {
1907                 callout_reset(&sc->sc_scan_ch,
1908                               (sc->sc_dwell_time * hz) / 1000,
1909                               bwi_next_scan, sc);
1910         } else if (nstate == IEEE80211_S_RUN) {
1911                 /* XXX 15 seconds */
1912                 callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
1913         }
1914         return error;
1915 }
1916
1917 static int
1918 bwi_media_change(struct ifnet *ifp)
1919 {
1920         int error;
1921
1922         ASSERT_SERIALIZED(ifp->if_serializer);
1923
1924         error = ieee80211_media_change(ifp);
1925         if (error != ENETRESET)
1926                 return error;
1927
1928         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
1929                 bwi_init(ifp->if_softc);
1930         return 0;
1931 }
1932
1933 static int
1934 bwi_dma_alloc(struct bwi_softc *sc)
1935 {
1936         int error, i, has_txstats;
1937         bus_addr_t lowaddr = 0;
1938         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1939         uint32_t txrx_ctrl_step = 0;
1940
1941         has_txstats = 0;
1942         for (i = 0; i < sc->sc_nmac; ++i) {
1943                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1944                         has_txstats = 1;
1945                         break;
1946                 }
1947         }
1948
1949         switch (sc->sc_bus_space) {
1950         case BWI_BUS_SPACE_30BIT:
1951         case BWI_BUS_SPACE_32BIT:
1952                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1953                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1954                 else
1955                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1956                 desc_sz = sizeof(struct bwi_desc32);
1957                 txrx_ctrl_step = 0x20;
1958
1959                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1960                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
1961                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
1962                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
1963                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
1964                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
1965                 sc->sc_rxeof = bwi_rxeof32;
1966                 sc->sc_start_tx = bwi_start_tx32;
1967                 if (has_txstats) {
1968                         sc->sc_init_txstats = bwi_init_txstats32;
1969                         sc->sc_free_txstats = bwi_free_txstats32;
1970                         sc->sc_txeof_status = bwi_txeof_status32;
1971                 }
1972                 break;
1973
1974         case BWI_BUS_SPACE_64BIT:
1975                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
1976                 desc_sz = sizeof(struct bwi_desc64);
1977                 txrx_ctrl_step = 0x40;
1978
1979                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
1980                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
1981                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
1982                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
1983                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
1984                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
1985                 sc->sc_rxeof = bwi_rxeof64;
1986                 sc->sc_start_tx = bwi_start_tx64;
1987                 if (has_txstats) {
1988                         sc->sc_init_txstats = bwi_init_txstats64;
1989                         sc->sc_free_txstats = bwi_free_txstats64;
1990                         sc->sc_txeof_status = bwi_txeof_status64;
1991                 }
1992                 break;
1993         }
1994
1995         KKASSERT(lowaddr != 0);
1996         KKASSERT(desc_sz != 0);
1997         KKASSERT(txrx_ctrl_step != 0);
1998
1999         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
2000         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
2001
2002         /*
2003          * Create top level DMA tag
2004          */
2005         error = bus_dma_tag_create(NULL, BWI_ALIGN, 0,
2006                                    lowaddr, BUS_SPACE_MAXADDR,
2007                                    NULL, NULL,
2008                                    MAXBSIZE,
2009                                    BUS_SPACE_UNRESTRICTED,
2010                                    BUS_SPACE_MAXSIZE_32BIT,
2011                                    0, &sc->sc_parent_dtag);
2012         if (error) {
2013                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
2014                 return error;
2015         }
2016
2017 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
2018
2019         /*
2020          * Create TX ring DMA stuffs
2021          */
2022         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2023                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2024                                    NULL, NULL,
2025                                    tx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2026                                    0, &sc->sc_txring_dtag);
2027         if (error) {
2028                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
2029                 return error;
2030         }
2031
2032         for (i = 0; i < BWI_TX_NRING; ++i) {
2033                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
2034                                            &sc->sc_tx_rdata[i], tx_ring_sz,
2035                                            TXRX_CTRL(i));
2036                 if (error) {
2037                         device_printf(sc->sc_dev, "%dth TX ring "
2038                                       "DMA alloc failed\n", i);
2039                         return error;
2040                 }
2041         }
2042
2043         /*
2044          * Create RX ring DMA stuffs
2045          */
2046         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2047                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2048                                    NULL, NULL,
2049                                    rx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2050                                    0, &sc->sc_rxring_dtag);
2051         if (error) {
2052                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
2053                 return error;
2054         }
2055
2056         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
2057                                    rx_ring_sz, TXRX_CTRL(0));
2058         if (error) {
2059                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
2060                 return error;
2061         }
2062
2063         if (has_txstats) {
2064                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
2065                 if (error) {
2066                         device_printf(sc->sc_dev,
2067                                       "TX stats DMA alloc failed\n");
2068                         return error;
2069                 }
2070         }
2071
2072 #undef TXRX_CTRL
2073
2074         return bwi_dma_mbuf_create(sc);
2075 }
2076
2077 static void
2078 bwi_dma_free(struct bwi_softc *sc)
2079 {
2080         if (sc->sc_txring_dtag != NULL) {
2081                 int i;
2082
2083                 for (i = 0; i < BWI_TX_NRING; ++i) {
2084                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2085
2086                         if (rd->rdata_desc != NULL) {
2087                                 bus_dmamap_unload(sc->sc_txring_dtag,
2088                                                   rd->rdata_dmap);
2089                                 bus_dmamem_free(sc->sc_txring_dtag,
2090                                                 rd->rdata_desc,
2091                                                 rd->rdata_dmap);
2092                         }
2093                 }
2094                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2095         }
2096
2097         if (sc->sc_rxring_dtag != NULL) {
2098                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2099
2100                 if (rd->rdata_desc != NULL) {
2101                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2102                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2103                                         rd->rdata_dmap);
2104                 }
2105                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2106         }
2107
2108         bwi_dma_txstats_free(sc);
2109         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2110
2111         if (sc->sc_parent_dtag != NULL)
2112                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2113 }
2114
2115 static int
2116 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2117                    struct bwi_ring_data *rd, bus_size_t size,
2118                    uint32_t txrx_ctrl)
2119 {
2120         int error;
2121
2122         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2123                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2124                                  &rd->rdata_dmap);
2125         if (error) {
2126                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2127                 return error;
2128         }
2129
2130         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2131                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2132                                 BUS_DMA_WAITOK);
2133         if (error) {
2134                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2135                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2136                 rd->rdata_desc = NULL;
2137                 return error;
2138         }
2139
2140         rd->rdata_txrx_ctrl = txrx_ctrl;
2141         return 0;
2142 }
2143
2144 static int
2145 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2146                       bus_size_t desc_sz)
2147 {
2148         struct bwi_txstats_data *st;
2149         bus_size_t dma_size;
2150         int error;
2151
2152         st = kmalloc(sizeof(*st), M_DEVBUF, M_WAITOK | M_ZERO);
2153         sc->sc_txstats = st;
2154
2155         /*
2156          * Create TX stats descriptor DMA stuffs
2157          */
2158         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2159
2160         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2161                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2162                                    NULL, NULL,
2163                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2164                                    0, &st->stats_ring_dtag);
2165         if (error) {
2166                 device_printf(sc->sc_dev, "can't create txstats ring "
2167                               "DMA tag\n");
2168                 return error;
2169         }
2170
2171         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2172                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2173                                  &st->stats_ring_dmap);
2174         if (error) {
2175                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2176                               "DMA mem\n");
2177                 bus_dma_tag_destroy(st->stats_ring_dtag);
2178                 st->stats_ring_dtag = NULL;
2179                 return error;
2180         }
2181
2182         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2183                                 st->stats_ring, dma_size,
2184                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2185                                 BUS_DMA_WAITOK);
2186         if (error) {
2187                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2188                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2189                                 st->stats_ring_dmap);
2190                 bus_dma_tag_destroy(st->stats_ring_dtag);
2191                 st->stats_ring_dtag = NULL;
2192                 return error;
2193         }
2194
2195         /*
2196          * Create TX stats DMA stuffs
2197          */
2198         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2199                            BWI_ALIGN);
2200
2201         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_ALIGN, 0,
2202                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2203                                    NULL, NULL,
2204                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2205                                    0, &st->stats_dtag);
2206         if (error) {
2207                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2208                 return error;
2209         }
2210
2211         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2212                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2213                                  &st->stats_dmap);
2214         if (error) {
2215                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2216                 bus_dma_tag_destroy(st->stats_dtag);
2217                 st->stats_dtag = NULL;
2218                 return error;
2219         }
2220
2221         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2222                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2223                                 BUS_DMA_WAITOK);
2224         if (error) {
2225                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2226                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2227                 bus_dma_tag_destroy(st->stats_dtag);
2228                 st->stats_dtag = NULL;
2229                 return error;
2230         }
2231
2232         st->stats_ctrl_base = ctrl_base;
2233         return 0;
2234 }
2235
2236 static void
2237 bwi_dma_txstats_free(struct bwi_softc *sc)
2238 {
2239         struct bwi_txstats_data *st;
2240
2241         if (sc->sc_txstats == NULL)
2242                 return;
2243         st = sc->sc_txstats;
2244
2245         if (st->stats_ring_dtag != NULL) {
2246                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2247                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2248                                 st->stats_ring_dmap);
2249                 bus_dma_tag_destroy(st->stats_ring_dtag);
2250         }
2251
2252         if (st->stats_dtag != NULL) {
2253                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2254                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2255                 bus_dma_tag_destroy(st->stats_dtag);
2256         }
2257
2258         kfree(st, M_DEVBUF);
2259 }
2260
2261 static void
2262 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2263 {
2264         KASSERT(nseg == 1, ("too many segments\n"));
2265         *((bus_addr_t *)arg) = seg->ds_addr;
2266 }
2267
2268 static int
2269 bwi_dma_mbuf_create(struct bwi_softc *sc)
2270 {
2271         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2272         int i, j, k, ntx, error;
2273
2274         /*
2275          * Create TX/RX mbuf DMA tag
2276          */
2277         error = bus_dma_tag_create(sc->sc_parent_dtag, 1, 0,
2278                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2279                                    NULL, NULL, MCLBYTES, 1,
2280                                    BUS_SPACE_MAXSIZE_32BIT,
2281                                    0, &sc->sc_buf_dtag);
2282         if (error) {
2283                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2284                 return error;
2285         }
2286
2287         ntx = 0;
2288
2289         /*
2290          * Create TX mbuf DMA map
2291          */
2292         for (i = 0; i < BWI_TX_NRING; ++i) {
2293                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2294
2295                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2296                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2297                                                   &tbd->tbd_buf[j].tb_dmap);
2298                         if (error) {
2299                                 device_printf(sc->sc_dev, "can't create "
2300                                               "%dth tbd, %dth DMA map\n", i, j);
2301
2302                                 ntx = i;
2303                                 for (k = 0; k < j; ++k) {
2304                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2305                                                 tbd->tbd_buf[k].tb_dmap);
2306                                 }
2307                                 goto fail;
2308                         }
2309                 }
2310         }
2311         ntx = BWI_TX_NRING;
2312
2313         /*
2314          * Create RX mbuf DMA map and a spare DMA map
2315          */
2316         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2317                                   &rbd->rbd_tmp_dmap);
2318         if (error) {
2319                 device_printf(sc->sc_dev,
2320                               "can't create spare RX buf DMA map\n");
2321                 goto fail;
2322         }
2323
2324         for (j = 0; j < BWI_RX_NDESC; ++j) {
2325                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2326                                           &rbd->rbd_buf[j].rb_dmap);
2327                 if (error) {
2328                         device_printf(sc->sc_dev, "can't create %dth "
2329                                       "RX buf DMA map\n", j);
2330
2331                         for (k = 0; k < j; ++k) {
2332                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2333                                         rbd->rbd_buf[j].rb_dmap);
2334                         }
2335                         bus_dmamap_destroy(sc->sc_buf_dtag,
2336                                            rbd->rbd_tmp_dmap);
2337                         goto fail;
2338                 }
2339         }
2340
2341         return 0;
2342 fail:
2343         bwi_dma_mbuf_destroy(sc, ntx, 0);
2344         return error;
2345 }
2346
2347 static void
2348 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2349 {
2350         int i, j;
2351
2352         if (sc->sc_buf_dtag == NULL)
2353                 return;
2354
2355         for (i = 0; i < ntx; ++i) {
2356                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2357
2358                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2359                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2360
2361                         if (tb->tb_mbuf != NULL) {
2362                                 bus_dmamap_unload(sc->sc_buf_dtag,
2363                                                   tb->tb_dmap);
2364                                 m_freem(tb->tb_mbuf);
2365                         }
2366                         if (tb->tb_ni != NULL)
2367                                 ieee80211_free_node(tb->tb_ni);
2368                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2369                 }
2370         }
2371
2372         if (nrx) {
2373                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2374
2375                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2376                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2377                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2378
2379                         if (rb->rb_mbuf != NULL) {
2380                                 bus_dmamap_unload(sc->sc_buf_dtag,
2381                                                   rb->rb_dmap);
2382                                 m_freem(rb->rb_mbuf);
2383                         }
2384                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2385                 }
2386         }
2387
2388         bus_dma_tag_destroy(sc->sc_buf_dtag);
2389         sc->sc_buf_dtag = NULL;
2390 }
2391
2392 static void
2393 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2394 {
2395         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2396 }
2397
2398 static void
2399 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2400 {
2401         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2402 }
2403
2404 static int
2405 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2406 {
2407         struct bwi_ring_data *rd;
2408         struct bwi_txbuf_data *tbd;
2409         uint32_t val, addr_hi, addr_lo;
2410
2411         KKASSERT(ring_idx < BWI_TX_NRING);
2412         rd = &sc->sc_tx_rdata[ring_idx];
2413         tbd = &sc->sc_tx_bdata[ring_idx];
2414
2415         tbd->tbd_idx = 0;
2416         tbd->tbd_used = 0;
2417
2418         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2419         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2420                         BUS_DMASYNC_PREWRITE);
2421
2422         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2423         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2424
2425         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2426               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2427                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2428         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2429
2430         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2431               BWI_TXRX32_CTRL_ENABLE;
2432         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2433
2434         return 0;
2435 }
2436
2437 static void
2438 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2439                        bus_addr_t paddr, int hdr_size, int ndesc)
2440 {
2441         uint32_t val, addr_hi, addr_lo;
2442
2443         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2444         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2445
2446         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2447               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2448                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2449         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2450
2451         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2452               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2453               BWI_TXRX32_CTRL_ENABLE;
2454         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2455
2456         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2457                     (ndesc - 1) * sizeof(struct bwi_desc32));
2458 }
2459
2460 static int
2461 bwi_init_rx_ring32(struct bwi_softc *sc)
2462 {
2463         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2464         int i, error;
2465
2466         sc->sc_rx_bdata.rbd_idx = 0;
2467
2468         for (i = 0; i < BWI_RX_NDESC; ++i) {
2469                 error = bwi_newbuf(sc, i, 1);
2470                 if (error) {
2471                         if_printf(&sc->sc_ic.ic_if,
2472                                   "can't allocate %dth RX buffer\n", i);
2473                         return error;
2474                 }
2475         }
2476         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2477                         BUS_DMASYNC_PREWRITE);
2478
2479         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2480                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2481         return 0;
2482 }
2483
2484 static int
2485 bwi_init_txstats32(struct bwi_softc *sc)
2486 {
2487         struct bwi_txstats_data *st = sc->sc_txstats;
2488         bus_addr_t stats_paddr;
2489         int i;
2490
2491         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2492         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2493
2494         st->stats_idx = 0;
2495
2496         stats_paddr = st->stats_paddr;
2497         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2498                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2499                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2500                 stats_paddr += sizeof(struct bwi_txstats);
2501         }
2502         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2503                         BUS_DMASYNC_PREWRITE);
2504
2505         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2506                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2507         return 0;
2508 }
2509
2510 static void
2511 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2512                     int buf_len)
2513 {
2514         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2515
2516         KKASSERT(buf_idx < BWI_RX_NDESC);
2517         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2518                          paddr, buf_len, 0);
2519 }
2520
2521 static void
2522 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2523                     int buf_idx, bus_addr_t paddr, int buf_len)
2524 {
2525         KKASSERT(buf_idx < BWI_TX_NDESC);
2526         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2527                          paddr, buf_len, 1);
2528 }
2529
2530 static int
2531 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2532 {
2533         /* TODO:64 */
2534         return EOPNOTSUPP;
2535 }
2536
2537 static int
2538 bwi_init_rx_ring64(struct bwi_softc *sc)
2539 {
2540         /* TODO:64 */
2541         return EOPNOTSUPP;
2542 }
2543
2544 static int
2545 bwi_init_txstats64(struct bwi_softc *sc)
2546 {
2547         /* TODO:64 */
2548         return EOPNOTSUPP;
2549 }
2550
2551 static void
2552 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2553                     int buf_len)
2554 {
2555         /* TODO:64 */
2556 }
2557
2558 static void
2559 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2560                     int buf_idx, bus_addr_t paddr, int buf_len)
2561 {
2562         /* TODO:64 */
2563 }
2564
2565 static void
2566 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2567                  bus_size_t mapsz __unused, int error)
2568 {
2569         if (!error) {
2570                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2571                 *((bus_addr_t *)arg) = seg->ds_addr;
2572         }
2573 }
2574
2575 static int
2576 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2577 {
2578         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2579         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2580         struct bwi_rxbuf_hdr *hdr;
2581         bus_dmamap_t map;
2582         bus_addr_t paddr;
2583         struct mbuf *m;
2584         int error;
2585
2586         KKASSERT(buf_idx < BWI_RX_NDESC);
2587
2588         m = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2589         if (m == NULL) {
2590                 error = ENOBUFS;
2591
2592                 /*
2593                  * If the NIC is up and running, we need to:
2594                  * - Clear RX buffer's header.
2595                  * - Restore RX descriptor settings.
2596                  */
2597                 if (init)
2598                         return error;
2599                 else
2600                         goto back;
2601         }
2602         m->m_len = m->m_pkthdr.len = MCLBYTES;
2603
2604         /*
2605          * Try to load RX buf into temporary DMA map
2606          */
2607         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2608                                      bwi_dma_buf_addr, &paddr,
2609                                      init ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2610         if (error) {
2611                 m_freem(m);
2612
2613                 /*
2614                  * See the comment above
2615                  */
2616                 if (init)
2617                         return error;
2618                 else
2619                         goto back;
2620         }
2621
2622         if (!init)
2623                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2624         rxbuf->rb_mbuf = m;
2625         rxbuf->rb_paddr = paddr;
2626
2627         /*
2628          * Swap RX buf's DMA map with the loaded temporary one
2629          */
2630         map = rxbuf->rb_dmap;
2631         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2632         rbd->rbd_tmp_dmap = map;
2633
2634 back:
2635         /*
2636          * Clear RX buf header
2637          */
2638         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2639         bzero(hdr, sizeof(*hdr));
2640         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2641
2642         /*
2643          * Setup RX buf descriptor
2644          */
2645         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2646                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2647         return error;
2648 }
2649
2650 static void
2651 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2652                     const uint8_t *addr)
2653 {
2654         int i;
2655
2656         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2657                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2658
2659         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2660                 uint16_t addr_val;
2661
2662                 addr_val = (uint16_t)addr[i * 2] |
2663                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2664                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2665         }
2666 }
2667
2668 static int
2669 bwi_set_chan(struct bwi_softc *sc, struct ieee80211_channel *c)
2670 {
2671         struct ieee80211com *ic = &sc->sc_ic;
2672         struct ifnet *ifp = &ic->ic_if;
2673         struct bwi_mac *mac;
2674         uint16_t flags;
2675         u_int chan;
2676
2677         ASSERT_SERIALIZED(ifp->if_serializer);
2678
2679         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
2680         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2681
2682         chan = ieee80211_chan2ieee(ic, c);
2683
2684         bwi_rf_set_chan(mac, chan, 0);
2685
2686         /*
2687          * Setup radio tap channel freq and flags
2688          */
2689         if (IEEE80211_IS_CHAN_G(c))
2690                 flags = IEEE80211_CHAN_G;
2691         else
2692                 flags = IEEE80211_CHAN_B;
2693
2694         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
2695                 htole16(c->ic_freq);
2696         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
2697                 htole16(flags);
2698
2699         return 0;
2700 }
2701
2702 static void
2703 bwi_next_scan(void *xsc)
2704 {
2705         struct bwi_softc *sc = xsc;
2706         struct ieee80211com *ic = &sc->sc_ic;
2707         struct ifnet *ifp = &ic->ic_if;
2708
2709         lwkt_serialize_enter(ifp->if_serializer);
2710
2711         if (ic->ic_state == IEEE80211_S_SCAN)
2712                 ieee80211_next_scan(ic);
2713
2714         lwkt_serialize_exit(ifp->if_serializer);
2715 }
2716
2717 static int
2718 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2719 {
2720         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2721         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2722         struct ieee80211com *ic = &sc->sc_ic;
2723         struct ifnet *ifp = &ic->ic_if;
2724         int idx, rx_data = 0;
2725
2726         idx = rbd->rbd_idx;
2727         while (idx != end_idx) {
2728                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2729                 struct bwi_rxbuf_hdr *hdr;
2730                 struct ieee80211_frame_min *wh;
2731                 struct ieee80211_node *ni;
2732                 struct mbuf *m;
2733                 const void *plcp;
2734                 uint16_t flags2;
2735                 int buflen, wh_ofs, hdr_extra, rssi, type, rate;
2736
2737                 m = rb->rb_mbuf;
2738                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2739                                 BUS_DMASYNC_POSTREAD);
2740
2741                 if (bwi_newbuf(sc, idx, 0)) {
2742                         ifp->if_ierrors++;
2743                         goto next;
2744                 }
2745
2746                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2747                 flags2 = le16toh(hdr->rxh_flags2);
2748
2749                 hdr_extra = 0;
2750                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2751                         hdr_extra = 2;
2752                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2753
2754                 buflen = le16toh(hdr->rxh_buflen);
2755                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2756                         if_printf(ifp, "short frame %d, hdr_extra %d\n",
2757                                   buflen, hdr_extra);
2758                         ifp->if_ierrors++;
2759                         m_freem(m);
2760                         goto next;
2761                 }
2762
2763                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2764                 rssi = bwi_calc_rssi(sc, hdr);
2765
2766                 m->m_pkthdr.rcvif = ifp;
2767                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2768                 m_adj(m, sizeof(*hdr) + wh_ofs);
2769
2770                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2771                         rate = bwi_ofdm_plcp2rate(plcp);
2772                 else
2773                         rate = bwi_ds_plcp2rate(plcp);
2774
2775                 /* RX radio tap */
2776                 if (sc->sc_drvbpf != NULL)
2777                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi);
2778
2779                 m_adj(m, -IEEE80211_CRC_LEN);
2780
2781                 wh = mtod(m, struct ieee80211_frame_min *);
2782                 ni = ieee80211_find_rxnode(ic, wh);
2783
2784                 type = ieee80211_input(ic, m, ni, rssi - BWI_NOISE_FLOOR,
2785                                        le16toh(hdr->rxh_tsf));
2786                 ieee80211_free_node(ni);
2787
2788                 if (type == IEEE80211_FC0_TYPE_DATA) {
2789                         rx_data = 1;
2790                         sc->sc_rx_rate = rate;
2791                 }
2792 next:
2793                 idx = (idx + 1) % BWI_RX_NDESC;
2794         }
2795
2796         rbd->rbd_idx = idx;
2797         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2798                         BUS_DMASYNC_PREWRITE);
2799         return rx_data;
2800 }
2801
2802 static int
2803 bwi_rxeof32(struct bwi_softc *sc)
2804 {
2805         uint32_t val, rx_ctrl;
2806         int end_idx, rx_data;
2807
2808         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2809
2810         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2811         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2812                   sizeof(struct bwi_desc32);
2813
2814         rx_data = bwi_rxeof(sc, end_idx);
2815
2816         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2817                     end_idx * sizeof(struct bwi_desc32));
2818
2819         return rx_data;
2820 }
2821
2822 static int
2823 bwi_rxeof64(struct bwi_softc *sc)
2824 {
2825         /* TODO:64 */
2826         return 0;
2827 }
2828
2829 static void
2830 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2831 {
2832         int i;
2833
2834         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2835
2836 #define NRETRY 10
2837
2838         for (i = 0; i < NRETRY; ++i) {
2839                 uint32_t status;
2840
2841                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2842                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2843                     BWI_RX32_STATUS_STATE_DISABLED)
2844                         break;
2845
2846                 DELAY(1000);
2847         }
2848         if (i == NRETRY)
2849                 if_printf(&sc->sc_ic.ic_if, "reset rx ring timedout\n");
2850
2851 #undef NRETRY
2852
2853         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2854 }
2855
2856 static void
2857 bwi_free_txstats32(struct bwi_softc *sc)
2858 {
2859         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2860 }
2861
2862 static void
2863 bwi_free_rx_ring32(struct bwi_softc *sc)
2864 {
2865         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2866         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2867         int i;
2868
2869         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2870
2871         for (i = 0; i < BWI_RX_NDESC; ++i) {
2872                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2873
2874                 if (rb->rb_mbuf != NULL) {
2875                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2876                         m_freem(rb->rb_mbuf);
2877                         rb->rb_mbuf = NULL;
2878                 }
2879         }
2880 }
2881
2882 static void
2883 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2884 {
2885         struct bwi_ring_data *rd;
2886         struct bwi_txbuf_data *tbd;
2887         struct ifnet *ifp = &sc->sc_ic.ic_if;
2888         uint32_t state, val;
2889         int i;
2890
2891         KKASSERT(ring_idx < BWI_TX_NRING);
2892         rd = &sc->sc_tx_rdata[ring_idx];
2893         tbd = &sc->sc_tx_bdata[ring_idx];
2894
2895 #define NRETRY 10
2896
2897         for (i = 0; i < NRETRY; ++i) {
2898                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2899                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2900                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2901                     state == BWI_TX32_STATUS_STATE_IDLE ||
2902                     state == BWI_TX32_STATUS_STATE_STOPPED)
2903                         break;
2904
2905                 DELAY(1000);
2906         }
2907         if (i == NRETRY) {
2908                 if_printf(ifp, "wait for TX ring(%d) stable timed out\n",
2909                           ring_idx);
2910         }
2911
2912         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2913         for (i = 0; i < NRETRY; ++i) {
2914                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2915                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2916                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2917                         break;
2918
2919                 DELAY(1000);
2920         }
2921         if (i == NRETRY)
2922                 if_printf(ifp, "reset TX ring (%d) timed out\n", ring_idx);
2923
2924 #undef NRETRY
2925
2926         DELAY(1000);
2927
2928         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2929
2930         for (i = 0; i < BWI_TX_NDESC; ++i) {
2931                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2932
2933                 if (tb->tb_mbuf != NULL) {
2934                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2935                         m_freem(tb->tb_mbuf);
2936                         tb->tb_mbuf = NULL;
2937                 }
2938                 if (tb->tb_ni != NULL) {
2939                         ieee80211_free_node(tb->tb_ni);
2940                         tb->tb_ni = NULL;
2941                 }
2942         }
2943 }
2944
2945 static void
2946 bwi_free_txstats64(struct bwi_softc *sc)
2947 {
2948         /* TODO:64 */
2949 }
2950
2951 static void
2952 bwi_free_rx_ring64(struct bwi_softc *sc)
2953 {
2954         /* TODO:64 */
2955 }
2956
2957 static void
2958 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
2959 {
2960         /* TODO:64 */
2961 }
2962
2963 static int
2964 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
2965           struct ieee80211_node **ni0, int mgt_pkt)
2966 {
2967         struct ieee80211com *ic = &sc->sc_ic;
2968         struct ieee80211_node *ni = *ni0;
2969         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
2970         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
2971         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
2972         struct bwi_mac *mac;
2973         struct bwi_txbuf_hdr *hdr;
2974         struct ieee80211_frame *wh;
2975         uint8_t rate, rate_fb;
2976         uint32_t mac_ctrl;
2977         uint16_t phy_ctrl;
2978         bus_addr_t paddr;
2979         int pkt_len, error, mcast_pkt = 0;
2980 #if 0
2981         const uint8_t *p;
2982         int i;
2983 #endif
2984
2985         KKASSERT(ni != NULL);
2986         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
2987         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2988
2989         wh = mtod(m, struct ieee80211_frame *);
2990
2991         /* Get 802.11 frame len before prepending TX header */
2992         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
2993
2994         /*
2995          * Find TX rate
2996          */
2997         bzero(tb->tb_rateidx, sizeof(tb->tb_rateidx));
2998         if (!mgt_pkt) {
2999                 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
3000                         int idx;
3001
3002                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3003                                         ic->ic_fixed_rate);
3004
3005                         if (ic->ic_fixed_rate >= 1)
3006                                 idx = ic->ic_fixed_rate - 1;
3007                         else
3008                                 idx = 0;
3009                         rate_fb = IEEE80211_RS_RATE(&ni->ni_rates, idx);
3010                 } else {
3011                         tb->tb_rateidx_cnt = ieee80211_ratectl_findrate(ni,
3012                                 m->m_pkthdr.len, tb->tb_rateidx, BWI_NTXRATE);
3013
3014                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3015                                                  tb->tb_rateidx[0]);
3016                         if (tb->tb_rateidx_cnt == BWI_NTXRATE) {
3017                                 rate_fb = IEEE80211_RS_RATE(&ni->ni_rates,
3018                                                             tb->tb_rateidx[1]);
3019                         } else {
3020                                 rate_fb = rate;
3021                         }
3022                         tb->tb_buflen = m->m_pkthdr.len;
3023                 }
3024         } else {
3025                 /* Fixed at 1Mbits/s for mgt frames */
3026                 rate = rate_fb = (1 * 2);
3027         }
3028
3029         if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
3030                 rate = rate_fb = ic->ic_mcast_rate;
3031                 mcast_pkt = 1;
3032         }
3033
3034         if (rate == 0 || rate_fb == 0) {
3035                 /* XXX this should not happen */
3036                 if_printf(&ic->ic_if, "invalid rate %u or fallback rate %u",
3037                           rate, rate_fb);
3038                 rate = rate_fb = (1 * 2); /* Force 1Mbits/s */
3039         }
3040         sc->sc_tx_rate = rate;
3041
3042         /*
3043          * TX radio tap
3044          */
3045         if (sc->sc_drvbpf != NULL) {
3046                 sc->sc_tx_th.wt_flags = 0;
3047                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3048                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3049                 if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_DS &&
3050                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3051                     rate != (1 * 2)) {
3052                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3053                 }
3054                 sc->sc_tx_th.wt_rate = rate;
3055
3056                 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_tx_th, sc->sc_tx_th_len);
3057         }
3058
3059         /*
3060          * Setup the embedded TX header
3061          */
3062         M_PREPEND(m, sizeof(*hdr), MB_DONTWAIT);
3063         if (m == NULL) {
3064                 if_printf(&ic->ic_if, "prepend TX header failed\n");
3065                 return ENOBUFS;
3066         }
3067         hdr = mtod(m, struct bwi_txbuf_hdr *);
3068
3069         bzero(hdr, sizeof(*hdr));
3070
3071         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3072         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3073
3074         if (!mcast_pkt) {
3075                 uint16_t dur;
3076                 uint8_t ack_rate;
3077
3078                 ack_rate = ieee80211_ack_rate(ni, rate_fb);
3079                 dur = ieee80211_txtime(ni,
3080                 sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN,
3081                 ack_rate, ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
3082
3083                 hdr->txh_fb_duration = htole16(dur);
3084         }
3085
3086         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3087                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3088
3089         bwi_plcp_header(hdr->txh_plcp, pkt_len, rate);
3090         bwi_plcp_header(hdr->txh_fb_plcp, pkt_len, rate_fb);
3091
3092         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3093                              BWI_TXH_PHY_C_ANTMODE_MASK);
3094         if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_OFDM)
3095                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3096         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3097                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3098
3099         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3100         if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
3101                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3102         if (ieee80211_rate2modtype(rate_fb) == IEEE80211_MODTYPE_OFDM)
3103                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3104
3105         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3106         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3107
3108         /* Catch any further usage */
3109         hdr = NULL;
3110         wh = NULL;
3111
3112         /* DMA load */
3113         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3114                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3115         if (error && error != EFBIG) {
3116                 if_printf(&ic->ic_if, "can't load TX buffer (1) %d\n", error);
3117                 goto back;
3118         }
3119
3120         if (error) {    /* error == EFBIG */
3121                 struct mbuf *m_new;
3122
3123                 m_new = m_defrag(m, MB_DONTWAIT);
3124                 if (m_new == NULL) {
3125                         if_printf(&ic->ic_if, "can't defrag TX buffer\n");
3126                         error = ENOBUFS;
3127                         goto back;
3128                 } else {
3129                         m = m_new;
3130                 }
3131
3132                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3133                                              bwi_dma_buf_addr, &paddr,
3134                                              BUS_DMA_NOWAIT);
3135                 if (error) {
3136                         if_printf(&ic->ic_if, "can't load TX buffer (2) %d\n",
3137                                   error);
3138                         goto back;
3139                 }
3140         }
3141         error = 0;
3142
3143         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3144
3145         if (mgt_pkt || mcast_pkt) {
3146                 /* Don't involve mcast/mgt packets into TX rate control */
3147                 ieee80211_free_node(ni);
3148                 *ni0 = ni = NULL;
3149         }
3150         tb->tb_mbuf = m;
3151         tb->tb_ni = ni;
3152
3153 #if 0
3154         p = mtod(m, const uint8_t *);
3155         for (i = 0; i < m->m_pkthdr.len; ++i) {
3156                 if (i != 0 && i % 8 == 0)
3157                         kprintf("\n");
3158                 kprintf("%02x ", p[i]);
3159         }
3160         kprintf("\n");
3161 #endif
3162
3163         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3164                 idx, pkt_len, m->m_pkthdr.len);
3165
3166         /* Setup TX descriptor */
3167         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3168         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3169                         BUS_DMASYNC_PREWRITE);
3170
3171         /* Kick start */
3172         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3173
3174 back:
3175         if (error)
3176                 m_freem(m);
3177         return error;
3178 }
3179
3180 static void
3181 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3182 {
3183         idx = (idx + 1) % BWI_TX_NDESC;
3184         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3185                     idx * sizeof(struct bwi_desc32));
3186 }
3187
3188 static void
3189 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3190 {
3191         /* TODO:64 */
3192 }
3193
3194 static void
3195 bwi_txeof_status32(struct bwi_softc *sc)
3196 {
3197         struct ifnet *ifp = &sc->sc_ic.ic_if;
3198         uint32_t val, ctrl_base;
3199         int end_idx;
3200
3201         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3202
3203         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3204         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3205                   sizeof(struct bwi_desc32);
3206
3207         bwi_txeof_status(sc, end_idx);
3208
3209         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3210                     end_idx * sizeof(struct bwi_desc32));
3211
3212         if ((ifp->if_flags & IFF_OACTIVE) == 0)
3213                 ifp->if_start(ifp);
3214 }
3215
3216 static void
3217 bwi_txeof_status64(struct bwi_softc *sc)
3218 {
3219         /* TODO:64 */
3220 }
3221
3222 static void
3223 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3224 {
3225         struct ifnet *ifp = &sc->sc_ic.ic_if;
3226         struct bwi_txbuf_data *tbd;
3227         struct bwi_txbuf *tb;
3228         int ring_idx, buf_idx;
3229
3230         if (tx_id == 0) {
3231                 if_printf(ifp, "zero tx id\n");
3232                 return;
3233         }
3234
3235         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3236         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3237
3238         KKASSERT(ring_idx == BWI_TX_DATA_RING);
3239         KKASSERT(buf_idx < BWI_TX_NDESC);
3240
3241         tbd = &sc->sc_tx_bdata[ring_idx];
3242         KKASSERT(tbd->tbd_used > 0);
3243         tbd->tbd_used--;
3244
3245         tb = &tbd->tbd_buf[buf_idx];
3246
3247         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3248                 "acked %d, data_txcnt %d, ni %p\n",
3249                 buf_idx, acked, data_txcnt, tb->tb_ni);
3250
3251         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3252         m_freem(tb->tb_mbuf);
3253         tb->tb_mbuf = NULL;
3254
3255         if (tb->tb_ni != NULL) {
3256                 struct ieee80211_ratectl_res res[BWI_NTXRATE];
3257                 int res_len, retry;
3258
3259                 if (data_txcnt <= BWI_SHRETRY_FB || tb->tb_rateidx_cnt == 1) {
3260                         res_len = 1;
3261                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3262                         res[0].rc_res_tries = data_txcnt;
3263                 } else {
3264                         res_len = BWI_NTXRATE;
3265                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3266                         res[0].rc_res_tries = BWI_SHRETRY_FB;
3267                         res[1].rc_res_rateidx = tb->tb_rateidx[1];
3268                         res[1].rc_res_tries = data_txcnt - BWI_SHRETRY_FB;
3269                 }
3270
3271                 if (acked)
3272                         retry = data_txcnt > 0 ? data_txcnt - 1 : 0;
3273                 else
3274                         retry = data_txcnt;
3275
3276                 ieee80211_ratectl_tx_complete(tb->tb_ni, tb->tb_buflen,
3277                         res, res_len, retry, 0, !acked);
3278
3279                 ieee80211_free_node(tb->tb_ni);
3280                 tb->tb_ni = NULL;
3281         }
3282
3283         if (tbd->tbd_used == 0)
3284                 sc->sc_tx_timer = 0;
3285
3286         ifp->if_flags &= ~IFF_OACTIVE;
3287 }
3288
3289 static void
3290 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3291 {
3292         struct bwi_txstats_data *st = sc->sc_txstats;
3293         int idx;
3294
3295         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3296
3297         idx = st->stats_idx;
3298         while (idx != end_idx) {
3299                 const struct bwi_txstats *stats = &st->stats[idx];
3300
3301                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3302                         int data_txcnt;
3303
3304                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3305                                                 BWI_TXS_TXCNT_DATA);
3306                         _bwi_txeof(sc, le16toh(stats->txs_id),
3307                                    stats->txs_flags & BWI_TXS_F_ACKED,
3308                                    data_txcnt);
3309                 }
3310                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3311         }
3312         st->stats_idx = idx;
3313 }
3314
3315 static void
3316 bwi_txeof(struct bwi_softc *sc)
3317 {
3318         struct ifnet *ifp = &sc->sc_ic.ic_if;
3319
3320         for (;;) {
3321                 uint32_t tx_status0, tx_status1;
3322                 uint16_t tx_id;
3323                 int data_txcnt;
3324
3325                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3326                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3327                         break;
3328                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3329
3330                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3331                 data_txcnt = __SHIFTOUT(tx_status0,
3332                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3333
3334                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3335                         continue;
3336
3337                 _bwi_txeof(sc, tx_id, tx_status0 & BWI_TXSTATUS0_ACKED,
3338                            data_txcnt);
3339         }
3340
3341         if ((ifp->if_flags & IFF_OACTIVE) == 0)
3342                 ifp->if_start(ifp);
3343 }
3344
3345 static int
3346 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3347 {
3348         bwi_power_on(sc, 1);
3349         return bwi_set_clock_mode(sc, clk_mode);
3350 }
3351
3352 static void
3353 bwi_bbp_power_off(struct bwi_softc *sc)
3354 {
3355         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3356         bwi_power_off(sc, 1);
3357 }
3358
3359 static int
3360 bwi_get_pwron_delay(struct bwi_softc *sc)
3361 {
3362         struct bwi_regwin *com, *old;
3363         struct bwi_clock_freq freq;
3364         uint32_t val;
3365         int error;
3366
3367         com = &sc->sc_com_regwin;
3368         KKASSERT(BWI_REGWIN_EXIST(com));
3369
3370         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3371                 return 0;
3372
3373         error = bwi_regwin_switch(sc, com, &old);
3374         if (error)
3375                 return error;
3376
3377         bwi_get_clock_freq(sc, &freq);
3378
3379         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3380         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3381         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3382
3383         return bwi_regwin_switch(sc, old, NULL);
3384 }
3385
3386 static int
3387 bwi_bus_attach(struct bwi_softc *sc)
3388 {
3389         struct bwi_regwin *bus, *old;
3390         int error;
3391
3392         bus = &sc->sc_bus_regwin;
3393
3394         error = bwi_regwin_switch(sc, bus, &old);
3395         if (error)
3396                 return error;
3397
3398         if (!bwi_regwin_is_enabled(sc, bus))
3399                 bwi_regwin_enable(sc, bus, 0);
3400
3401         /* Disable interripts */
3402         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3403
3404         return bwi_regwin_switch(sc, old, NULL);
3405 }
3406
3407 static const char *
3408 bwi_regwin_name(const struct bwi_regwin *rw)
3409 {
3410         switch (rw->rw_type) {
3411         case BWI_REGWIN_T_COM:
3412                 return "COM";
3413         case BWI_REGWIN_T_BUSPCI:
3414                 return "PCI";
3415         case BWI_REGWIN_T_MAC:
3416                 return "MAC";
3417         case BWI_REGWIN_T_BUSPCIE:
3418                 return "PCIE";
3419         }
3420         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3421         return NULL;
3422 }
3423
3424 static uint32_t
3425 bwi_regwin_disable_bits(struct bwi_softc *sc)
3426 {
3427         uint32_t busrev;
3428
3429         /* XXX cache this */
3430         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3431         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3432                 "bus rev %u\n", busrev);
3433
3434         if (busrev == BWI_BUSREV_0)
3435                 return BWI_STATE_LO_DISABLE1;
3436         else if (busrev == BWI_BUSREV_1)
3437                 return BWI_STATE_LO_DISABLE2;
3438         else
3439                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3440 }
3441
3442 int
3443 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3444 {
3445         uint32_t val, disable_bits;
3446
3447         disable_bits = bwi_regwin_disable_bits(sc);
3448         val = CSR_READ_4(sc, BWI_STATE_LO);
3449
3450         if ((val & (BWI_STATE_LO_CLOCK |
3451                     BWI_STATE_LO_RESET |
3452                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3453                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3454                         bwi_regwin_name(rw));
3455                 return 1;
3456         } else {
3457                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3458                         bwi_regwin_name(rw));
3459                 return 0;
3460         }
3461 }
3462
3463 void
3464 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3465 {
3466         uint32_t state_lo, disable_bits;
3467         int i;
3468
3469         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3470
3471         /*
3472          * If current regwin is in 'reset' state, it was already disabled.
3473          */
3474         if (state_lo & BWI_STATE_LO_RESET) {
3475                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3476                         "%s was already disabled\n", bwi_regwin_name(rw));
3477                 return;
3478         }
3479
3480         disable_bits = bwi_regwin_disable_bits(sc);
3481
3482         /*
3483          * Disable normal clock
3484          */
3485         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3486         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3487
3488         /*
3489          * Wait until normal clock is disabled
3490          */
3491 #define NRETRY  1000
3492         for (i = 0; i < NRETRY; ++i) {
3493                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3494                 if (state_lo & disable_bits)
3495                         break;
3496                 DELAY(10);
3497         }
3498         if (i == NRETRY) {
3499                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3500                               bwi_regwin_name(rw));
3501         }
3502
3503         for (i = 0; i < NRETRY; ++i) {
3504                 uint32_t state_hi;
3505
3506                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3507                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3508                         break;
3509                 DELAY(10);
3510         }
3511         if (i == NRETRY) {
3512                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3513                               bwi_regwin_name(rw));
3514         }
3515 #undef NRETRY
3516
3517         /*
3518          * Reset and disable regwin with gated clock
3519          */
3520         state_lo = BWI_STATE_LO_RESET | disable_bits |
3521                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3522                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3523         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3524
3525         /* Flush pending bus write */
3526         CSR_READ_4(sc, BWI_STATE_LO);
3527         DELAY(1);
3528
3529         /* Reset and disable regwin */
3530         state_lo = BWI_STATE_LO_RESET | disable_bits |
3531                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3532         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3533
3534         /* Flush pending bus write */
3535         CSR_READ_4(sc, BWI_STATE_LO);
3536         DELAY(1);
3537 }
3538
3539 void
3540 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3541 {
3542         uint32_t state_lo, state_hi, imstate;
3543
3544         bwi_regwin_disable(sc, rw, flags);
3545
3546         /* Reset regwin with gated clock */
3547         state_lo = BWI_STATE_LO_RESET |
3548                    BWI_STATE_LO_CLOCK |
3549                    BWI_STATE_LO_GATED_CLOCK |
3550                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3551         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3552
3553         /* Flush pending bus write */
3554         CSR_READ_4(sc, BWI_STATE_LO);
3555         DELAY(1);
3556
3557         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3558         if (state_hi & BWI_STATE_HI_SERROR)
3559                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3560
3561         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3562         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3563                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3564                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3565         }
3566
3567         /* Enable regwin with gated clock */
3568         state_lo = BWI_STATE_LO_CLOCK |
3569                    BWI_STATE_LO_GATED_CLOCK |
3570                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3571         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3572
3573         /* Flush pending bus write */
3574         CSR_READ_4(sc, BWI_STATE_LO);
3575         DELAY(1);
3576
3577         /* Enable regwin with normal clock */
3578         state_lo = BWI_STATE_LO_CLOCK |
3579                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3580         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3581
3582         /* Flush pending bus write */
3583         CSR_READ_4(sc, BWI_STATE_LO);
3584         DELAY(1);
3585 }
3586
3587 static void
3588 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3589 {
3590         struct ieee80211com *ic = &sc->sc_ic;
3591         struct bwi_mac *mac;
3592         struct bwi_myaddr_bssid buf;
3593         const uint8_t *p;
3594         uint32_t val;
3595         int n, i;
3596
3597         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3598         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3599
3600         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3601
3602         bcopy(ic->ic_myaddr, buf.myaddr, sizeof(buf.myaddr));
3603         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3604
3605         n = sizeof(buf) / sizeof(val);
3606         p = (const uint8_t *)&buf;
3607         for (i = 0; i < n; ++i) {
3608                 int j;
3609
3610                 val = 0;
3611                 for (j = 0; j < sizeof(val); ++j)
3612                         val |= ((uint32_t)(*p++)) << (j * 8);
3613
3614                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3615         }
3616 }
3617
3618 static void
3619 bwi_updateslot(struct ifnet *ifp)
3620 {
3621         struct bwi_softc *sc = ifp->if_softc;
3622         struct ieee80211com *ic = &sc->sc_ic;
3623         struct bwi_mac *mac;
3624
3625         if ((ifp->if_flags & IFF_RUNNING) == 0)
3626                 return;
3627
3628         ASSERT_SERIALIZED(ifp->if_serializer);
3629
3630         DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3631
3632         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3633         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3634
3635         bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3636 }
3637
3638 static void
3639 bwi_calibrate(void *xsc)
3640 {
3641         struct bwi_softc *sc = xsc;
3642         struct ieee80211com *ic = &sc->sc_ic;
3643         struct ifnet *ifp = &ic->ic_if;
3644
3645         lwkt_serialize_enter(ifp->if_serializer);
3646
3647         if (ic->ic_state == IEEE80211_S_RUN) {
3648                 struct bwi_mac *mac;
3649
3650                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3651                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3652
3653                 if (ic->ic_opmode != IEEE80211_M_MONITOR)
3654                         bwi_mac_calibrate_txpower(mac);
3655
3656                 /* XXX 15 seconds */
3657                 callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3658         }
3659
3660         lwkt_serialize_exit(ifp->if_serializer);
3661 }
3662
3663 static int
3664 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3665 {
3666         struct bwi_mac *mac;
3667
3668         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3669         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3670
3671         return bwi_rf_calc_rssi(mac, hdr);
3672 }
3673
3674 static void
3675 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3676                 struct bwi_rxbuf_hdr *hdr, const void *plcp,
3677                 int rate, int rssi)
3678 {
3679         const struct ieee80211_frame_min *wh;
3680
3681         KKASSERT(sc->sc_drvbpf != NULL);
3682
3683         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3684         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3685                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3686
3687         wh = mtod(m, const struct ieee80211_frame_min *);
3688         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3689                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3690
3691         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3692         sc->sc_rx_th.wr_rate = rate;
3693         sc->sc_rx_th.wr_antsignal = rssi;
3694         sc->sc_rx_th.wr_antnoise = BWI_NOISE_FLOOR;
3695
3696         bpf_ptap(sc->sc_drvbpf, m, &sc->sc_rx_th, sc->sc_rx_th_len);
3697 }
3698
3699 static void
3700 bwi_led_attach(struct bwi_softc *sc)
3701 {
3702         const uint8_t *led_act = NULL;
3703         uint16_t gpio, val[BWI_LED_MAX];
3704         int i;
3705
3706 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
3707
3708         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
3709                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3710                         led_act = bwi_vendor_led_act[i].led_act;
3711                         break;
3712                 }
3713         }
3714         if (led_act == NULL)
3715                 led_act = bwi_default_led_act;
3716
3717 #undef N
3718
3719         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3720         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3721         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3722
3723         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3724         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3725         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3726
3727         for (i = 0; i < BWI_LED_MAX; ++i) {
3728                 struct bwi_led *led = &sc->sc_leds[i];
3729
3730                 if (val[i] == 0xff) {
3731                         led->l_act = led_act[i];
3732                 } else {
3733                         if (val[i] & BWI_LED_ACT_LOW)
3734                                 led->l_flags |= BWI_LED_F_ACTLOW;
3735                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3736                 }
3737                 led->l_mask = (1 << i);
3738
3739                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3740                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3741                     led->l_act == BWI_LED_ACT_BLINK) {
3742                         led->l_flags |= BWI_LED_F_BLINK;
3743                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3744                                 led->l_flags |= BWI_LED_F_POLLABLE;
3745                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3746                                 led->l_flags |= BWI_LED_F_SLOW;
3747
3748                         if (sc->sc_blink_led == NULL) {
3749                                 sc->sc_blink_led = led;
3750                                 if (led->l_flags & BWI_LED_F_SLOW)
3751                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3752                         }
3753                 }
3754
3755                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3756                         "%dth led, act %d, lowact %d\n", i,
3757                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3758         }
3759         callout_init(&sc->sc_led_blink_ch);
3760 }
3761
3762 static __inline uint16_t
3763 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3764 {
3765         if (led->l_flags & BWI_LED_F_ACTLOW)
3766                 on = !on;
3767         if (on)
3768                 val |= led->l_mask;
3769         else
3770                 val &= ~led->l_mask;
3771         return val;
3772 }
3773
3774 static void
3775 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3776 {
3777         struct ieee80211com *ic = &sc->sc_ic;
3778         uint16_t val;
3779         int i;
3780
3781         if (nstate == IEEE80211_S_INIT) {
3782                 callout_stop(&sc->sc_led_blink_ch);
3783                 sc->sc_led_blinking = 0;
3784         }
3785
3786         if ((ic->ic_if.if_flags & IFF_RUNNING) == 0)
3787                 return;
3788
3789         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3790         for (i = 0; i < BWI_LED_MAX; ++i) {
3791                 struct bwi_led *led = &sc->sc_leds[i];
3792                 int on;
3793
3794                 if (led->l_act == BWI_LED_ACT_UNKN ||
3795                     led->l_act == BWI_LED_ACT_NULL)
3796                         continue;
3797
3798                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3799                     nstate != IEEE80211_S_INIT)
3800                         continue;
3801
3802                 switch (led->l_act) {
3803                 case BWI_LED_ACT_ON:            /* Always on */
3804                         on = 1;
3805                         break;
3806                 case BWI_LED_ACT_OFF:           /* Always off */
3807                 case BWI_LED_ACT_5GHZ:          /* TODO: 11A */
3808                         on = 0;
3809                         break;
3810                 default:
3811                         on = 1;
3812                         switch (nstate) {
3813                         case IEEE80211_S_INIT:
3814                                 on = 0;
3815                                 break;
3816                         case IEEE80211_S_RUN:
3817                                 if (led->l_act == BWI_LED_ACT_11G &&
3818                                     ic->ic_curmode != IEEE80211_MODE_11G)
3819                                         on = 0;
3820                                 break;
3821                         default:
3822                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3823                                         on = 0;
3824                                 break;
3825                         }
3826                         break;
3827                 }
3828
3829                 val = bwi_led_onoff(led, val, on);
3830         }
3831         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3832 }
3833
3834 static void
3835 bwi_led_event(struct bwi_softc *sc, int event)
3836 {
3837         struct bwi_led *led = sc->sc_blink_led;
3838         int rate;
3839
3840         if (event == BWI_LED_EVENT_POLL) {
3841                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3842                         return;
3843                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3844                         return;
3845         }
3846
3847         sc->sc_led_ticks = ticks;
3848         if (sc->sc_led_blinking)
3849                 return;
3850
3851         switch (event) {
3852         case BWI_LED_EVENT_RX:
3853                 rate = sc->sc_rx_rate;
3854                 break;
3855         case BWI_LED_EVENT_TX:
3856                 rate = sc->sc_tx_rate;
3857                 break;
3858         case BWI_LED_EVENT_POLL:
3859                 rate = 0;
3860                 break;
3861         default:
3862                 panic("unknown LED event %d\n", event);
3863                 break;
3864         }
3865         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3866                             bwi_led_duration[rate].off_dur);
3867 }
3868
3869 static void
3870 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
3871 {
3872         struct bwi_led *led = sc->sc_blink_led;
3873         uint16_t val;
3874
3875         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3876         val = bwi_led_onoff(led, val, 1);
3877         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3878
3879         if (led->l_flags & BWI_LED_F_SLOW) {
3880                 BWI_LED_SLOWDOWN(on_dur);
3881                 BWI_LED_SLOWDOWN(off_dur);
3882         }
3883
3884         sc->sc_led_blinking = 1;
3885         sc->sc_led_blink_offdur = off_dur;
3886
3887         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
3888 }
3889
3890 static void
3891 bwi_led_blink_next(void *xsc)
3892 {
3893         struct bwi_softc *sc = xsc;
3894         uint16_t val;
3895
3896         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3897         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
3898         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3899
3900         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
3901                       bwi_led_blink_end, sc);
3902 }
3903
3904 static void
3905 bwi_led_blink_end(void *xsc)
3906 {
3907         struct bwi_softc *sc = xsc;
3908
3909         sc->sc_led_blinking = 0;
3910 }
3911
3912 static void *
3913 bwi_ratectl_attach(struct ieee80211com *ic, u_int rc)
3914 {
3915         struct bwi_softc *sc = ic->ic_if.if_softc;
3916
3917         switch (rc) {
3918         case IEEE80211_RATECTL_ONOE:
3919                 return &sc->sc_onoe_param;
3920         case IEEE80211_RATECTL_NONE:
3921                 /* This could only happen during detaching */
3922                 return NULL;
3923         default:
3924                 panic("unknown rate control algo %u\n", rc);
3925                 return NULL;
3926         }
3927 }