sys/bus/u4b/wlan/if_rum.c

   1 /*      $FreeBSD: src/sys/dev/usb/wlan/if_rum.c,v 1.51 2013/03/22 02:25:33 svnexp Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr>
   5  * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org>
   6  * Copyright (c) 2007-2008 Hans Petter Selasky <hselasky@FreeBSD.org>
   7  *
   8  * Permission to use, copy, modify, and distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  */
  20
  21 /*-
  22  * Ralink Technology RT2501USB/RT2601USB chipset driver
  23  * http://www.ralinktech.com.tw/
  24  */
  25
  26 #include "opt_inet.h"
  27
  28 #include <sys/param.h>
  29 #include <sys/sockio.h>
  30 #include <sys/sysctl.h>
  31 #include <sys/lock.h>
  32 #include <sys/mbuf.h>
  33 #include <sys/kernel.h>
  34 #include <sys/socket.h>
  35 #include <sys/systm.h>
  36 #include <sys/malloc.h>
  37 #include <sys/module.h>
  38 #include <sys/bus.h>
  39 #include <sys/endian.h>
  40
  41 #include <sys/rman.h>
  42
  43 #include <net/bpf.h>
  44 #include <net/if.h>
  45 #include <net/if_arp.h>
  46 #include <net/ethernet.h>
  47 #include <net/if_dl.h>
  48 #include <net/if_media.h>
  49 #include <net/if_types.h>
  50 #include <net/ifq_var.h>
  51
  52 #ifdef INET
  53 #include <netinet/in.h>
  54 #include <netinet/in_systm.h>
  55 #include <netinet/in_var.h>
  56 #include <netinet/if_ether.h>
  57 #include <netinet/ip.h>
  58 #endif
  59
  60 #include <netproto/802_11/ieee80211_var.h>
  61 #include <netproto/802_11/ieee80211_regdomain.h>
  62 #include <netproto/802_11/ieee80211_radiotap.h>
  63 #include <netproto/802_11/ieee80211_ratectl.h>
  64
  65 #include <bus/u4b/usb.h>
  66 #include <bus/u4b/usbdi.h>
  67 #include "usbdevs.h"
  68
  69 #define USB_DEBUG_VAR rum_debug
  70 #include <bus/u4b/usb_debug.h>
  71
  72 #include <bus/u4b/wlan/if_rumreg.h>
  73 #include <bus/u4b/wlan/if_rumvar.h>
  74 #include <bus/u4b/wlan/if_rumfw.h>
  75
  76 #ifdef USB_DEBUG
  77 static int rum_debug = 0;
  78
  79 static SYSCTL_NODE(_hw_usb, OID_AUTO, rum, CTLFLAG_RW, 0, "USB rum");
  80 SYSCTL_INT(_hw_usb_rum, OID_AUTO, debug, CTLFLAG_RW, &rum_debug, 0,
  81     "Debug level");
  82 #endif
  83
  84 #define N(a)    ((int)(sizeof (a) / sizeof ((a)[0])))
  85
  86 static const STRUCT_USB_HOST_ID rum_devs[] = {
  87 #define RUM_DEV(v,p)  { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
  88     RUM_DEV(ABOCOM, HWU54DM),
  89     RUM_DEV(ABOCOM, RT2573_2),
  90     RUM_DEV(ABOCOM, RT2573_3),
  91     RUM_DEV(ABOCOM, RT2573_4),
  92     RUM_DEV(ABOCOM, WUG2700),
  93     RUM_DEV(AMIT, CGWLUSB2GO),
  94     RUM_DEV(ASUS, RT2573_1),
  95     RUM_DEV(ASUS, RT2573_2),
  96     RUM_DEV(BELKIN, F5D7050A),
  97     RUM_DEV(BELKIN, F5D9050V3),
  98     RUM_DEV(CISCOLINKSYS, WUSB54GC),
  99     RUM_DEV(CISCOLINKSYS, WUSB54GR),
 100     RUM_DEV(CONCEPTRONIC2, C54RU2),
 101     RUM_DEV(COREGA, CGWLUSB2GL),
 102     RUM_DEV(COREGA, CGWLUSB2GPX),
 103     RUM_DEV(DICKSMITH, CWD854F),
 104     RUM_DEV(DICKSMITH, RT2573),
 105     RUM_DEV(EDIMAX, EW7318USG),
 106     RUM_DEV(DLINK2, DWLG122C1),
 107     RUM_DEV(DLINK2, WUA1340),
 108     RUM_DEV(DLINK2, DWA111),
 109     RUM_DEV(DLINK2, DWA110),
 110     RUM_DEV(GIGABYTE, GNWB01GS),
 111     RUM_DEV(GIGABYTE, GNWI05GS),
 112     RUM_DEV(GIGASET, RT2573),
 113     RUM_DEV(GOODWAY, RT2573),
 114     RUM_DEV(GUILLEMOT, HWGUSB254LB),
 115     RUM_DEV(GUILLEMOT, HWGUSB254V2AP),
 116     RUM_DEV(HUAWEI3COM, WUB320G),
 117     RUM_DEV(MELCO, G54HP),
 118     RUM_DEV(MELCO, SG54HP),
 119     RUM_DEV(MELCO, SG54HG),
 120     RUM_DEV(MELCO, WLIUCG),
 121     RUM_DEV(MELCO, WLRUCG),
 122     RUM_DEV(MELCO, WLRUCGAOSS),
 123     RUM_DEV(MSI, RT2573_1),
 124     RUM_DEV(MSI, RT2573_2),
 125     RUM_DEV(MSI, RT2573_3),
 126     RUM_DEV(MSI, RT2573_4),
 127     RUM_DEV(NOVATECH, RT2573),
 128     RUM_DEV(PLANEX2, GWUS54HP),
 129     RUM_DEV(PLANEX2, GWUS54MINI2),
 130     RUM_DEV(PLANEX2, GWUSMM),
 131     RUM_DEV(QCOM, RT2573),
 132     RUM_DEV(QCOM, RT2573_2),
 133     RUM_DEV(QCOM, RT2573_3),
 134     RUM_DEV(RALINK, RT2573),
 135     RUM_DEV(RALINK, RT2573_2),
 136     RUM_DEV(RALINK, RT2671),
 137     RUM_DEV(SITECOMEU, WL113R2),
 138     RUM_DEV(SITECOMEU, WL172),
 139     RUM_DEV(SPARKLAN, RT2573),
 140     RUM_DEV(SURECOM, RT2573),
 141 #undef RUM_DEV
 142 };
 143
 144 static device_probe_t rum_match;
 145 static device_attach_t rum_attach;
 146 static device_detach_t rum_detach;
 147
 148 static usb_callback_t rum_bulk_read_callback;
 149 static usb_callback_t rum_bulk_write_callback;
 150
 151 static usb_error_t      rum_do_request(struct rum_softc *sc,
 152                             struct usb_device_request *req, void *data);
 153 static struct ieee80211vap *rum_vap_create(struct ieee80211com *,
 154                             const char [IFNAMSIZ], int,
 155                             enum ieee80211_opmode,
 156                             int, const uint8_t [IEEE80211_ADDR_LEN],
 157                             const uint8_t [IEEE80211_ADDR_LEN]);
 158 static void             rum_vap_delete(struct ieee80211vap *);
 159 static void             rum_tx_free(struct rum_tx_data *, int);
 160 static void             rum_setup_tx_list(struct rum_softc *);
 161 static void             rum_unsetup_tx_list(struct rum_softc *);
 162 static int              rum_newstate(struct ieee80211vap *,
 163                             enum ieee80211_state, int);
 164 static void             rum_setup_tx_desc(struct rum_softc *,
 165                             struct rum_tx_desc *, uint32_t, uint16_t, int,
 166                             int);
 167 static int              rum_tx_mgt(struct rum_softc *, struct mbuf *,
 168                             struct ieee80211_node *);
 169 static int              rum_tx_raw(struct rum_softc *, struct mbuf *,
 170                             struct ieee80211_node *,
 171                             const struct ieee80211_bpf_params *);
 172 static int              rum_tx_data(struct rum_softc *, struct mbuf *,
 173                             struct ieee80211_node *);
 174 static void             rum_start_locked(struct ifnet *);
 175 static void             rum_start(struct ifnet *, struct ifaltq_subque *);
 176 static int              rum_ioctl(struct ifnet *, u_long, caddr_t,
 177                             struct ucred *);
 178 static void             rum_eeprom_read(struct rum_softc *, uint16_t, void *,
 179                             int);
 180 static uint32_t         rum_read(struct rum_softc *, uint16_t);
 181 static void             rum_read_multi(struct rum_softc *, uint16_t, void *,
 182                             int);
 183 static usb_error_t      rum_write(struct rum_softc *, uint16_t, uint32_t);
 184 static usb_error_t      rum_write_multi(struct rum_softc *, uint16_t, void *,
 185                             size_t);
 186 static void             rum_bbp_write(struct rum_softc *, uint8_t, uint8_t);
 187 static uint8_t          rum_bbp_read(struct rum_softc *, uint8_t);
 188 static void             rum_rf_write(struct rum_softc *, uint8_t, uint32_t);
 189 static void             rum_select_antenna(struct rum_softc *);
 190 static void             rum_enable_mrr(struct rum_softc *);
 191 static void             rum_set_txpreamble(struct rum_softc *);
 192 static void             rum_set_basicrates(struct rum_softc *);
 193 static void             rum_select_band(struct rum_softc *,
 194                             struct ieee80211_channel *);
 195 static void             rum_set_chan(struct rum_softc *,
 196                             struct ieee80211_channel *);
 197 static void             rum_enable_tsf_sync(struct rum_softc *);
 198 static void             rum_enable_tsf(struct rum_softc *);
 199 static void             rum_update_slot(struct ifnet *);
 200 static void             rum_set_bssid(struct rum_softc *, const uint8_t *);
 201 static void             rum_set_macaddr(struct rum_softc *, const uint8_t *);
 202 static void             rum_update_mcast(struct ifnet *);
 203 static void             rum_update_promisc(struct ifnet *);
 204 static void             rum_setpromisc(struct rum_softc *);
 205 static const char       *rum_get_rf(int);
 206 static void             rum_read_eeprom(struct rum_softc *);
 207 static int              rum_bbp_init(struct rum_softc *);
 208 static void             rum_init_locked(struct rum_softc *);
 209 static void             rum_init(void *);
 210 static void             rum_stop(struct rum_softc *);
 211 static void             rum_load_microcode(struct rum_softc *, const uint8_t *,
 212                             size_t);
 213 static void             rum_prepare_beacon(struct rum_softc *,
 214                             struct ieee80211vap *);
 215 static int              rum_raw_xmit(struct ieee80211_node *, struct mbuf *,
 216                             const struct ieee80211_bpf_params *);
 217 static void             rum_scan_start(struct ieee80211com *);
 218 static void             rum_scan_end(struct ieee80211com *);
 219 static void             rum_set_channel(struct ieee80211com *);
 220 static int              rum_get_rssi(struct rum_softc *, uint8_t);
 221 static void             rum_ratectl_start(struct rum_softc *,
 222                             struct ieee80211_node *);
 223 static void             rum_ratectl_timeout(void *);
 224 static void             rum_ratectl_task(void *, int);
 225 static int              rum_pause(struct rum_softc *, int);
 226
 227 static const struct {
 228         uint32_t        reg;
 229         uint32_t        val;
 230 } rum_def_mac[] = {
 231         { RT2573_TXRX_CSR0,  0x025fb032 },
 232         { RT2573_TXRX_CSR1,  0x9eaa9eaf },
 233         { RT2573_TXRX_CSR2,  0x8a8b8c8d },
 234         { RT2573_TXRX_CSR3,  0x00858687 },
 235         { RT2573_TXRX_CSR7,  0x2e31353b },
 236         { RT2573_TXRX_CSR8,  0x2a2a2a2c },
 237         { RT2573_TXRX_CSR15, 0x0000000f },
 238         { RT2573_MAC_CSR6,   0x00000fff },
 239         { RT2573_MAC_CSR8,   0x016c030a },
 240         { RT2573_MAC_CSR10,  0x00000718 },
 241         { RT2573_MAC_CSR12,  0x00000004 },
 242         { RT2573_MAC_CSR13,  0x00007f00 },
 243         { RT2573_SEC_CSR0,   0x00000000 },
 244         { RT2573_SEC_CSR1,   0x00000000 },
 245         { RT2573_SEC_CSR5,   0x00000000 },
 246         { RT2573_PHY_CSR1,   0x000023b0 },
 247         { RT2573_PHY_CSR5,   0x00040a06 },
 248         { RT2573_PHY_CSR6,   0x00080606 },
 249         { RT2573_PHY_CSR7,   0x00000408 },
 250         { RT2573_AIFSN_CSR,  0x00002273 },
 251         { RT2573_CWMIN_CSR,  0x00002344 },
 252         { RT2573_CWMAX_CSR,  0x000034aa }
 253 };
 254
 255 static const struct {
 256         uint8_t reg;
 257         uint8_t val;
 258 } rum_def_bbp[] = {
 259         {   3, 0x80 },
 260         {  15, 0x30 },
 261         {  17, 0x20 },
 262         {  21, 0xc8 },
 263         {  22, 0x38 },
 264         {  23, 0x06 },
 265         {  24, 0xfe },
 266         {  25, 0x0a },
 267         {  26, 0x0d },
 268         {  32, 0x0b },
 269         {  34, 0x12 },
 270         {  37, 0x07 },
 271         {  39, 0xf8 },
 272         {  41, 0x60 },
 273         {  53, 0x10 },
 274         {  54, 0x18 },
 275         {  60, 0x10 },
 276         {  61, 0x04 },
 277         {  62, 0x04 },
 278         {  75, 0xfe },
 279         {  86, 0xfe },
 280         {  88, 0xfe },
 281         {  90, 0x0f },
 282         {  99, 0x00 },
 283         { 102, 0x16 },
 284         { 107, 0x04 }
 285 };
 286
 287 static const struct rfprog {
 288         uint8_t         chan;
 289         uint32_t        r1, r2, r3, r4;
 290 }  rum_rf5226[] = {
 291         {   1, 0x00b03, 0x001e1, 0x1a014, 0x30282 },
 292         {   2, 0x00b03, 0x001e1, 0x1a014, 0x30287 },
 293         {   3, 0x00b03, 0x001e2, 0x1a014, 0x30282 },
 294         {   4, 0x00b03, 0x001e2, 0x1a014, 0x30287 },
 295         {   5, 0x00b03, 0x001e3, 0x1a014, 0x30282 },
 296         {   6, 0x00b03, 0x001e3, 0x1a014, 0x30287 },
 297         {   7, 0x00b03, 0x001e4, 0x1a014, 0x30282 },
 298         {   8, 0x00b03, 0x001e4, 0x1a014, 0x30287 },
 299         {   9, 0x00b03, 0x001e5, 0x1a014, 0x30282 },
 300         {  10, 0x00b03, 0x001e5, 0x1a014, 0x30287 },
 301         {  11, 0x00b03, 0x001e6, 0x1a014, 0x30282 },
 302         {  12, 0x00b03, 0x001e6, 0x1a014, 0x30287 },
 303         {  13, 0x00b03, 0x001e7, 0x1a014, 0x30282 },
 304         {  14, 0x00b03, 0x001e8, 0x1a014, 0x30284 },
 305
 306         {  34, 0x00b03, 0x20266, 0x36014, 0x30282 },
 307         {  38, 0x00b03, 0x20267, 0x36014, 0x30284 },
 308         {  42, 0x00b03, 0x20268, 0x36014, 0x30286 },
 309         {  46, 0x00b03, 0x20269, 0x36014, 0x30288 },
 310
 311         {  36, 0x00b03, 0x00266, 0x26014, 0x30288 },
 312         {  40, 0x00b03, 0x00268, 0x26014, 0x30280 },
 313         {  44, 0x00b03, 0x00269, 0x26014, 0x30282 },
 314         {  48, 0x00b03, 0x0026a, 0x26014, 0x30284 },
 315         {  52, 0x00b03, 0x0026b, 0x26014, 0x30286 },
 316         {  56, 0x00b03, 0x0026c, 0x26014, 0x30288 },
 317         {  60, 0x00b03, 0x0026e, 0x26014, 0x30280 },
 318         {  64, 0x00b03, 0x0026f, 0x26014, 0x30282 },
 319
 320         { 100, 0x00b03, 0x0028a, 0x2e014, 0x30280 },
 321         { 104, 0x00b03, 0x0028b, 0x2e014, 0x30282 },
 322         { 108, 0x00b03, 0x0028c, 0x2e014, 0x30284 },
 323         { 112, 0x00b03, 0x0028d, 0x2e014, 0x30286 },
 324         { 116, 0x00b03, 0x0028e, 0x2e014, 0x30288 },
 325         { 120, 0x00b03, 0x002a0, 0x2e014, 0x30280 },
 326         { 124, 0x00b03, 0x002a1, 0x2e014, 0x30282 },
 327         { 128, 0x00b03, 0x002a2, 0x2e014, 0x30284 },
 328         { 132, 0x00b03, 0x002a3, 0x2e014, 0x30286 },
 329         { 136, 0x00b03, 0x002a4, 0x2e014, 0x30288 },
 330         { 140, 0x00b03, 0x002a6, 0x2e014, 0x30280 },
 331
 332         { 149, 0x00b03, 0x002a8, 0x2e014, 0x30287 },
 333         { 153, 0x00b03, 0x002a9, 0x2e014, 0x30289 },
 334         { 157, 0x00b03, 0x002ab, 0x2e014, 0x30281 },
 335         { 161, 0x00b03, 0x002ac, 0x2e014, 0x30283 },
 336         { 165, 0x00b03, 0x002ad, 0x2e014, 0x30285 }
 337 }, rum_rf5225[] = {
 338         {   1, 0x00b33, 0x011e1, 0x1a014, 0x30282 },
 339         {   2, 0x00b33, 0x011e1, 0x1a014, 0x30287 },
 340         {   3, 0x00b33, 0x011e2, 0x1a014, 0x30282 },
 341         {   4, 0x00b33, 0x011e2, 0x1a014, 0x30287 },
 342         {   5, 0x00b33, 0x011e3, 0x1a014, 0x30282 },
 343         {   6, 0x00b33, 0x011e3, 0x1a014, 0x30287 },
 344         {   7, 0x00b33, 0x011e4, 0x1a014, 0x30282 },
 345         {   8, 0x00b33, 0x011e4, 0x1a014, 0x30287 },
 346         {   9, 0x00b33, 0x011e5, 0x1a014, 0x30282 },
 347         {  10, 0x00b33, 0x011e5, 0x1a014, 0x30287 },
 348         {  11, 0x00b33, 0x011e6, 0x1a014, 0x30282 },
 349         {  12, 0x00b33, 0x011e6, 0x1a014, 0x30287 },
 350         {  13, 0x00b33, 0x011e7, 0x1a014, 0x30282 },
 351         {  14, 0x00b33, 0x011e8, 0x1a014, 0x30284 },
 352
 353         {  34, 0x00b33, 0x01266, 0x26014, 0x30282 },
 354         {  38, 0x00b33, 0x01267, 0x26014, 0x30284 },
 355         {  42, 0x00b33, 0x01268, 0x26014, 0x30286 },
 356         {  46, 0x00b33, 0x01269, 0x26014, 0x30288 },
 357
 358         {  36, 0x00b33, 0x01266, 0x26014, 0x30288 },
 359         {  40, 0x00b33, 0x01268, 0x26014, 0x30280 },
 360         {  44, 0x00b33, 0x01269, 0x26014, 0x30282 },
 361         {  48, 0x00b33, 0x0126a, 0x26014, 0x30284 },
 362         {  52, 0x00b33, 0x0126b, 0x26014, 0x30286 },
 363         {  56, 0x00b33, 0x0126c, 0x26014, 0x30288 },
 364         {  60, 0x00b33, 0x0126e, 0x26014, 0x30280 },
 365         {  64, 0x00b33, 0x0126f, 0x26014, 0x30282 },
 366
 367         { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 },
 368         { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 },
 369         { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 },
 370         { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 },
 371         { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 },
 372         { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 },
 373         { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 },
 374         { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 },
 375         { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 },
 376         { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 },
 377         { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 },
 378
 379         { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 },
 380         { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 },
 381         { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 },
 382         { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 },
 383         { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 }
 384 };
 385
 386 static const struct usb_config rum_config[RUM_N_TRANSFER] = {
 387         [RUM_BULK_WR] = {
 388                 .type = UE_BULK,
 389                 .endpoint = UE_ADDR_ANY,
 390                 .direction = UE_DIR_OUT,
 391                 .bufsize = (MCLBYTES + RT2573_TX_DESC_SIZE + 8),
 392                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 393                 .callback = rum_bulk_write_callback,
 394                 .timeout = 5000,        /* ms */
 395         },
 396         [RUM_BULK_RD] = {
 397                 .type = UE_BULK,
 398                 .endpoint = UE_ADDR_ANY,
 399                 .direction = UE_DIR_IN,
 400                 .bufsize = (MCLBYTES + RT2573_RX_DESC_SIZE),
 401                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 402                 .callback = rum_bulk_read_callback,
 403         },
 404 };
 405
 406 static int
 407 rum_match(device_t self)
 408 {
 409         struct usb_attach_arg *uaa = device_get_ivars(self);
 410
 411         if (uaa->usb_mode != USB_MODE_HOST)
 412                 return (ENXIO);
 413         if (uaa->info.bConfigIndex != 0)
 414                 return (ENXIO);
 415         if (uaa->info.bIfaceIndex != RT2573_IFACE_INDEX)
 416                 return (ENXIO);
 417
 418         return (usbd_lookup_id_by_uaa(rum_devs, sizeof(rum_devs), uaa));
 419 }
 420
 421 static int
 422 rum_attach(device_t self)
 423 {
 424         struct usb_attach_arg *uaa = device_get_ivars(self);
 425         struct rum_softc *sc = device_get_softc(self);
 426         struct ieee80211com *ic;
 427         struct ifnet *ifp;
 428         uint8_t iface_index, bands;
 429         uint32_t tmp;
 430         int error, ntries;
 431
 432         wlan_serialize_enter();
 433         device_set_usb_desc(self);
 434         sc->sc_udev = uaa->device;
 435         sc->sc_dev = self;
 436
 437         lockinit(&sc->sc_lock, device_get_nameunit(self), 0, LK_CANRECURSE);
 438
 439         iface_index = RT2573_IFACE_INDEX;
 440         error = usbd_transfer_setup(uaa->device, &iface_index,
 441             sc->sc_xfer, rum_config, RUM_N_TRANSFER, sc, &sc->sc_lock);
 442         if (error) {
 443                 device_printf(self, "could not allocate USB transfers, "
 444                     "err=%s\n", usbd_errstr(error));
 445                 goto detach;
 446         }
 447
 448         RUM_LOCK(sc);
 449         /* retrieve RT2573 rev. no */
 450         for (ntries = 0; ntries < 100; ntries++) {
 451                 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0)
 452                         break;
 453                 if (rum_pause(sc, hz / 100))
 454                         break;
 455         }
 456         if (ntries == 100) {
 457                 device_printf(sc->sc_dev, "timeout waiting for chip to settle\n");
 458                 RUM_UNLOCK(sc);
 459                 goto detach;
 460         }
 461
 462         /* retrieve MAC address and various other things from EEPROM */
 463         rum_read_eeprom(sc);
 464
 465         device_printf(sc->sc_dev, "MAC/BBP RT2573 (rev 0x%05x), RF %s\n",
 466             tmp, rum_get_rf(sc->rf_rev));
 467
 468         rum_load_microcode(sc, rt2573_ucode, sizeof(rt2573_ucode));
 469         RUM_UNLOCK(sc);
 470
 471         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 472         if (ifp == NULL) {
 473                 device_printf(sc->sc_dev, "can not if_alloc()\n");
 474                 goto detach;
 475         }
 476         ic = ifp->if_l2com;
 477
 478         ifp->if_softc = sc;
 479         if_initname(ifp, "rum", device_get_unit(sc->sc_dev));
 480         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 481         ifp->if_init = rum_init;
 482         ifp->if_ioctl = rum_ioctl;
 483         ifp->if_start = rum_start;
 484         ifq_set_maxlen(&ifp->if_snd, ifqmaxlen);
 485 #if 0 /* XXX swildner: see c3d4131842e47b168d93a0650d58d425ebeef789 */
 486         ifq_set_ready(&ifp->if_snd);
 487 #endif
 488
 489         ic->ic_ifp = ifp;
 490         ic->ic_opmode = IEEE80211_M_STA;
 491         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 492
 493         /* set device capabilities */
 494         ic->ic_caps =
 495               IEEE80211_C_STA           /* station mode supported */
 496             | IEEE80211_C_IBSS          /* IBSS mode supported */
 497             | IEEE80211_C_MONITOR       /* monitor mode supported */
 498             | IEEE80211_C_HOSTAP        /* HostAp mode supported */
 499             | IEEE80211_C_TXPMGT        /* tx power management */
 500             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 501             | IEEE80211_C_SHSLOT        /* short slot time supported */
 502             | IEEE80211_C_BGSCAN        /* bg scanning supported */
 503             | IEEE80211_C_WPA           /* 802.11i */
 504             ;
 505
 506         bands = 0;
 507         setbit(&bands, IEEE80211_MODE_11B);
 508         setbit(&bands, IEEE80211_MODE_11G);
 509         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226)
 510                 setbit(&bands, IEEE80211_MODE_11A);
 511         ieee80211_init_channels(ic, NULL, &bands);
 512
 513         ieee80211_ifattach(ic, sc->sc_bssid);
 514         ic->ic_update_promisc = rum_update_promisc;
 515         ic->ic_raw_xmit = rum_raw_xmit;
 516         ic->ic_scan_start = rum_scan_start;
 517         ic->ic_scan_end = rum_scan_end;
 518         ic->ic_set_channel = rum_set_channel;
 519
 520         ic->ic_vap_create = rum_vap_create;
 521         ic->ic_vap_delete = rum_vap_delete;
 522         ic->ic_update_mcast = rum_update_mcast;
 523
 524         ieee80211_radiotap_attach(ic,
 525             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 526                 RT2573_TX_RADIOTAP_PRESENT,
 527             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 528                 RT2573_RX_RADIOTAP_PRESENT);
 529
 530         if (bootverbose)
 531                 ieee80211_announce(ic);
 532
 533         wlan_serialize_exit();
 534         return (0);
 535
 536 detach:
 537         wlan_serialize_exit();
 538         rum_detach(self);
 539         return (ENXIO);                 /* failure */
 540 }
 541
 542 static int
 543 rum_detach(device_t self)
 544 {
 545         struct rum_softc *sc = device_get_softc(self);
 546         struct ifnet *ifp = sc->sc_ifp;
 547         struct ieee80211com *ic;
 548
 549         wlan_serialize_enter();
 550         /* Prevent further ioctls */
 551         sc->sc_detached = 1;
 552
 553         /* stop all USB transfers */
 554         usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
 555
 556         /* free TX list, if any */
 557         RUM_LOCK(sc);
 558         rum_unsetup_tx_list(sc);
 559         RUM_UNLOCK(sc);
 560
 561         if (ifp) {
 562                 ic = ifp->if_l2com;
 563                 ieee80211_ifdetach(ic);
 564                 if_free(ifp);
 565         }
 566         lockuninit(&sc->sc_lock);
 567         wlan_serialize_exit();
 568         return (0);
 569 }
 570
 571 static usb_error_t
 572 rum_do_request(struct rum_softc *sc,
 573     struct usb_device_request *req, void *data)
 574 {
 575         usb_error_t err;
 576         int ntries = 10;
 577
 578         while (ntries--) {
 579                 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_lock,
 580                     req, data, 0, NULL, 250 /* ms */);
 581                 if (err == 0)
 582                         break;
 583
 584                 DPRINTFN(1, "Control request failed, %s (retrying)\n",
 585                     usbd_errstr(err));
 586                 if (rum_pause(sc, hz / 100))
 587                         break;
 588         }
 589         return (err);
 590 }
 591
 592 static struct ieee80211vap *
 593 rum_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 594     enum ieee80211_opmode opmode, int flags,
 595     const uint8_t bssid[IEEE80211_ADDR_LEN],
 596     const uint8_t mac[IEEE80211_ADDR_LEN])
 597 {
 598         struct rum_softc *sc = ic->ic_ifp->if_softc;
 599         struct rum_vap *rvp;
 600         struct ieee80211vap *vap;
 601
 602         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 603                 return NULL;
 604         rvp = (struct rum_vap *) kmalloc(sizeof(struct rum_vap),
 605             M_80211_VAP, M_INTWAIT | M_ZERO);
 606         vap = &rvp->vap;
 607         /* enable s/w bmiss handling for sta mode */
 608         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 609             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 610
 611         /* override state transition machine */
 612         rvp->newstate = vap->iv_newstate;
 613         vap->iv_newstate = rum_newstate;
 614
 615         usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_lock, 0);
 616         TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
 617         ieee80211_ratectl_init(vap);
 618         ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
 619         /* complete setup */
 620         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 621         ic->ic_opmode = opmode;
 622         return vap;
 623 }
 624
 625 static void
 626 rum_vap_delete(struct ieee80211vap *vap)
 627 {
 628         struct rum_vap *rvp = RUM_VAP(vap);
 629         struct ieee80211com *ic = vap->iv_ic;
 630
 631         usb_callout_drain(&rvp->ratectl_ch);
 632         ieee80211_draintask(ic, &rvp->ratectl_task);
 633         ieee80211_ratectl_deinit(vap);
 634         ieee80211_vap_detach(vap);
 635         kfree(rvp, M_80211_VAP);
 636 }
 637
 638 static void
 639 rum_tx_free(struct rum_tx_data *data, int txerr)
 640 {
 641         struct rum_softc *sc = data->sc;
 642
 643         if (data->m != NULL) {
 644                 if (data->m->m_flags & M_TXCB)
 645                         ieee80211_process_callback(data->ni, data->m,
 646                             txerr ? ETIMEDOUT : 0);
 647                 m_freem(data->m);
 648                 data->m = NULL;
 649
 650                 ieee80211_free_node(data->ni);
 651                 data->ni = NULL;
 652         }
 653         STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 654         sc->tx_nfree++;
 655 }
 656
 657 static void
 658 rum_setup_tx_list(struct rum_softc *sc)
 659 {
 660         struct rum_tx_data *data;
 661         int i;
 662
 663         sc->tx_nfree = 0;
 664         STAILQ_INIT(&sc->tx_q);
 665         STAILQ_INIT(&sc->tx_free);
 666
 667         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 668                 data = &sc->tx_data[i];
 669
 670                 data->sc = sc;
 671                 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 672                 sc->tx_nfree++;
 673         }
 674 }
 675
 676 static void
 677 rum_unsetup_tx_list(struct rum_softc *sc)
 678 {
 679         struct rum_tx_data *data;
 680         int i;
 681
 682         /* make sure any subsequent use of the queues will fail */
 683         sc->tx_nfree = 0;
 684         STAILQ_INIT(&sc->tx_q);
 685         STAILQ_INIT(&sc->tx_free);
 686
 687         /* free up all node references and mbufs */
 688         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 689                 data = &sc->tx_data[i];
 690
 691                 if (data->m != NULL) {
 692                         m_freem(data->m);
 693                         data->m = NULL;
 694                 }
 695                 if (data->ni != NULL) {
 696                         ieee80211_free_node(data->ni);
 697                         data->ni = NULL;
 698                 }
 699         }
 700 }
 701
 702 static int
 703 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 704 {
 705         struct rum_vap *rvp = RUM_VAP(vap);
 706         struct ieee80211com *ic = vap->iv_ic;
 707         struct rum_softc *sc = ic->ic_ifp->if_softc;
 708         const struct ieee80211_txparam *tp;
 709         enum ieee80211_state ostate;
 710         struct ieee80211_node *ni;
 711         uint32_t tmp;
 712
 713         ostate = vap->iv_state;
 714         DPRINTF("%s -> %s\n",
 715                 ieee80211_state_name[ostate],
 716                 ieee80211_state_name[nstate]);
 717
 718 #if 0 /* XXX swildner: needed? */
 719         IEEE80211_UNLOCK(ic);
 720 #endif
 721         RUM_LOCK(sc);
 722         usb_callout_stop(&rvp->ratectl_ch);
 723
 724         switch (nstate) {
 725         case IEEE80211_S_INIT:
 726                 if (ostate == IEEE80211_S_RUN) {
 727                         /* abort TSF synchronization */
 728                         tmp = rum_read(sc, RT2573_TXRX_CSR9);
 729                         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
 730                 }
 731                 break;
 732
 733         case IEEE80211_S_RUN:
 734                 ni = ieee80211_ref_node(vap->iv_bss);
 735
 736                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
 737                         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) {
 738                                 RUM_UNLOCK(sc);
 739 #if 0 /* XXX swildner: needed? */
 740                                 IEEE80211_LOCK(ic);
 741 #endif
 742                                 ieee80211_free_node(ni);
 743                                 return (-1);
 744                         }
 745                         rum_update_slot(ic->ic_ifp);
 746                         rum_enable_mrr(sc);
 747                         rum_set_txpreamble(sc);
 748                         rum_set_basicrates(sc);
 749                         IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
 750                         rum_set_bssid(sc, sc->sc_bssid);
 751                 }
 752
 753                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 754                     vap->iv_opmode == IEEE80211_M_IBSS)
 755                         rum_prepare_beacon(sc, vap);
 756
 757                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
 758                         rum_enable_tsf_sync(sc);
 759                 else
 760                         rum_enable_tsf(sc);
 761
 762                 /* enable automatic rate adaptation */
 763                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 764                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
 765                         rum_ratectl_start(sc, ni);
 766                 ieee80211_free_node(ni);
 767                 break;
 768         default:
 769                 break;
 770         }
 771         RUM_UNLOCK(sc);
 772 #if 0 /* XXX swildner: needed? */
 773         IEEE80211_LOCK(ic);
 774 #endif
 775         return (rvp->newstate(vap, nstate, arg));
 776 }
 777
 778 static void
 779 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 780 {
 781         struct rum_softc *sc = usbd_xfer_softc(xfer);
 782         struct ifnet *ifp = sc->sc_ifp;
 783         struct ieee80211vap *vap;
 784         struct rum_tx_data *data;
 785         struct mbuf *m;
 786         struct usb_page_cache *pc;
 787         unsigned int len;
 788         int actlen, sumlen;
 789
 790         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 791
 792         switch (USB_GET_STATE(xfer)) {
 793         case USB_ST_TRANSFERRED:
 794                 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
 795
 796                 /* free resources */
 797                 data = usbd_xfer_get_priv(xfer);
 798                 rum_tx_free(data, 0);
 799                 usbd_xfer_set_priv(xfer, NULL);
 800
 801                 ifp->if_opackets++;
 802                 ifq_clr_oactive(&ifp->if_snd);
 803
 804                 /* FALLTHROUGH */
 805         case USB_ST_SETUP:
 806 tr_setup:
 807                 data = STAILQ_FIRST(&sc->tx_q);
 808                 if (data) {
 809                         STAILQ_REMOVE_HEAD(&sc->tx_q, next);
 810                         m = data->m;
 811
 812                         if (m->m_pkthdr.len > (int)(MCLBYTES + RT2573_TX_DESC_SIZE)) {
 813                                 DPRINTFN(0, "data overflow, %u bytes\n",
 814                                     m->m_pkthdr.len);
 815                                 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
 816                         }
 817                         pc = usbd_xfer_get_frame(xfer, 0);
 818                         usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
 819                         usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
 820                             m->m_pkthdr.len);
 821
 822                         vap = data->ni->ni_vap;
 823                         if (ieee80211_radiotap_active_vap(vap)) {
 824                                 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
 825
 826                                 tap->wt_flags = 0;
 827                                 tap->wt_rate = data->rate;
 828                                 tap->wt_antenna = sc->tx_ant;
 829
 830                                 ieee80211_radiotap_tx(vap, m);
 831                         }
 832
 833                         /* align end on a 4-bytes boundary */
 834                         len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
 835                         if ((len % 64) == 0)
 836                                 len += 4;
 837
 838                         DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
 839                             m->m_pkthdr.len, len);
 840
 841                         usbd_xfer_set_frame_len(xfer, 0, len);
 842                         usbd_xfer_set_priv(xfer, data);
 843
 844                         usbd_transfer_submit(xfer);
 845                 }
 846                 rum_start_locked(ifp);
 847                 break;
 848
 849         default:                        /* Error */
 850                 DPRINTFN(11, "transfer error, %s\n",
 851                     usbd_errstr(error));
 852
 853                 ifp->if_oerrors++;
 854                 data = usbd_xfer_get_priv(xfer);
 855                 if (data != NULL) {
 856                         rum_tx_free(data, error);
 857                         usbd_xfer_set_priv(xfer, NULL);
 858                 }
 859
 860                 if (error != USB_ERR_CANCELLED) {
 861                         if (error == USB_ERR_TIMEOUT)
 862                                 device_printf(sc->sc_dev, "device timeout\n");
 863
 864                         /*
 865                          * Try to clear stall first, also if other
 866                          * errors occur, hence clearing stall
 867                          * introduces a 50 ms delay:
 868                          */
 869                         usbd_xfer_set_stall(xfer);
 870                         goto tr_setup;
 871                 }
 872                 break;
 873         }
 874 }
 875
 876 static void
 877 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 878 {
 879         struct rum_softc *sc = usbd_xfer_softc(xfer);
 880         struct ifnet *ifp = sc->sc_ifp;
 881         struct ieee80211com *ic = ifp->if_l2com;
 882         struct ieee80211_node *ni;
 883         struct mbuf *m = NULL;
 884         struct usb_page_cache *pc;
 885         uint32_t flags;
 886         uint8_t rssi = 0;
 887         int len;
 888
 889         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 890
 891         switch (USB_GET_STATE(xfer)) {
 892         case USB_ST_TRANSFERRED:
 893
 894                 DPRINTFN(15, "rx done, actlen=%d\n", len);
 895
 896                 if (len < (int)(RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN)) {
 897                         DPRINTF("%s: xfer too short %d\n",
 898                             device_get_nameunit(sc->sc_dev), len);
 899                         ifp->if_ierrors++;
 900                         goto tr_setup;
 901                 }
 902
 903                 len -= RT2573_RX_DESC_SIZE;
 904                 pc = usbd_xfer_get_frame(xfer, 0);
 905                 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
 906
 907                 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
 908                 flags = le32toh(sc->sc_rx_desc.flags);
 909                 if (flags & RT2573_RX_CRC_ERROR) {
 910                         /*
 911                          * This should not happen since we did not
 912                          * request to receive those frames when we
 913                          * filled RUM_TXRX_CSR2:
 914                          */
 915                         DPRINTFN(5, "PHY or CRC error\n");
 916                         ifp->if_ierrors++;
 917                         goto tr_setup;
 918                 }
 919
 920                 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 921                 if (m == NULL) {
 922                         DPRINTF("could not allocate mbuf\n");
 923                         ifp->if_ierrors++;
 924                         goto tr_setup;
 925                 }
 926                 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
 927                     mtod(m, uint8_t *), len);
 928
 929                 /* finalize mbuf */
 930                 m->m_pkthdr.rcvif = ifp;
 931                 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
 932
 933                 if (ieee80211_radiotap_active(ic)) {
 934                         struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
 935
 936                         /* XXX read tsf */
 937                         tap->wr_flags = 0;
 938                         tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
 939                             (flags & RT2573_RX_OFDM) ?
 940                             IEEE80211_T_OFDM : IEEE80211_T_CCK);
 941                         tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
 942                         tap->wr_antnoise = RT2573_NOISE_FLOOR;
 943                         tap->wr_antenna = sc->rx_ant;
 944                 }
 945                 /* FALLTHROUGH */
 946         case USB_ST_SETUP:
 947 tr_setup:
 948                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 949                 usbd_transfer_submit(xfer);
 950
 951                 /*
 952                  * At the end of a USB callback it is always safe to unlock
 953                  * the private mutex of a device! That is why we do the
 954                  * "ieee80211_input" here, and not some lines up!
 955                  */
 956                 RUM_UNLOCK(sc);
 957                 if (m) {
 958                         ni = ieee80211_find_rxnode(ic,
 959                             mtod(m, struct ieee80211_frame_min *));
 960                         if (ni != NULL) {
 961                                 (void) ieee80211_input(ni, m, rssi,
 962                                     RT2573_NOISE_FLOOR);
 963                                 ieee80211_free_node(ni);
 964                         } else
 965                                 (void) ieee80211_input_all(ic, m, rssi,
 966                                     RT2573_NOISE_FLOOR);
 967                 }
 968                 if (!ifq_is_oactive(&ifp->if_snd) &&
 969                     !ifq_is_empty(&ifp->if_snd))
 970                         rum_start_locked(ifp);
 971                 RUM_LOCK(sc);
 972                 return;
 973
 974         default:                        /* Error */
 975                 if (error != USB_ERR_CANCELLED) {
 976                         /* try to clear stall first */
 977                         usbd_xfer_set_stall(xfer);
 978                         goto tr_setup;
 979                 }
 980                 return;
 981         }
 982 }
 983
 984 static uint8_t
 985 rum_plcp_signal(int rate)
 986 {
 987         switch (rate) {
 988         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
 989         case 12:        return 0xb;
 990         case 18:        return 0xf;
 991         case 24:        return 0xa;
 992         case 36:        return 0xe;
 993         case 48:        return 0x9;
 994         case 72:        return 0xd;
 995         case 96:        return 0x8;
 996         case 108:       return 0xc;
 997
 998         /* CCK rates (NB: not IEEE std, device-specific) */
 999         case 2:         return 0x0;
1000         case 4:         return 0x1;
1001         case 11:        return 0x2;
1002         case 22:        return 0x3;
1003         }
1004         return 0xff;            /* XXX unsupported/unknown rate */
1005 }
1006
1007 static void
1008 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
1009     uint32_t flags, uint16_t xflags, int len, int rate)
1010 {
1011         struct ifnet *ifp = sc->sc_ifp;
1012         struct ieee80211com *ic = ifp->if_l2com;
1013         uint16_t plcp_length;
1014         int remainder;
1015
1016         desc->flags = htole32(flags);
1017         desc->flags |= htole32(RT2573_TX_VALID);
1018         desc->flags |= htole32(len << 16);
1019
1020         desc->xflags = htole16(xflags);
1021
1022         desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) |
1023             RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10));
1024
1025         /* setup PLCP fields */
1026         desc->plcp_signal  = rum_plcp_signal(rate);
1027         desc->plcp_service = 4;
1028
1029         len += IEEE80211_CRC_LEN;
1030         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1031                 desc->flags |= htole32(RT2573_TX_OFDM);
1032
1033                 plcp_length = len & 0xfff;
1034                 desc->plcp_length_hi = plcp_length >> 6;
1035                 desc->plcp_length_lo = plcp_length & 0x3f;
1036         } else {
1037                 plcp_length = (16 * len + rate - 1) / rate;
1038                 if (rate == 22) {
1039                         remainder = (16 * len) % 22;
1040                         if (remainder != 0 && remainder < 7)
1041                                 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1042                 }
1043                 desc->plcp_length_hi = plcp_length >> 8;
1044                 desc->plcp_length_lo = plcp_length & 0xff;
1045
1046                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1047                         desc->plcp_signal |= 0x08;
1048         }
1049 }
1050
1051 static int
1052 rum_sendprot(struct rum_softc *sc,
1053     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1054 {
1055         struct ieee80211com *ic = ni->ni_ic;
1056         const struct ieee80211_frame *wh;
1057         struct rum_tx_data *data;
1058         struct mbuf *mprot;
1059         int protrate, ackrate, pktlen, flags, isshort;
1060         uint16_t dur;
1061
1062         RUM_LOCK_ASSERT(sc, MA_OWNED);
1063         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1064             ("protection %d", prot));
1065
1066         wh = mtod(m, const struct ieee80211_frame *);
1067         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1068
1069         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1070         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1071
1072         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1073         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1074             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1075         flags = RT2573_TX_MORE_FRAG;
1076         if (prot == IEEE80211_PROT_RTSCTS) {
1077                 /* NB: CTS is the same size as an ACK */
1078                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1079                 flags |= RT2573_TX_NEED_ACK;
1080                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1081         } else {
1082                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1083         }
1084         if (mprot == NULL) {
1085                 /* XXX stat + msg */
1086                 return (ENOBUFS);
1087         }
1088         data = STAILQ_FIRST(&sc->tx_free);
1089         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1090         sc->tx_nfree--;
1091
1092         data->m = mprot;
1093         data->ni = ieee80211_ref_node(ni);
1094         data->rate = protrate;
1095         rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate);
1096
1097         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1098         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1099
1100         return 0;
1101 }
1102
1103 static int
1104 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1105 {
1106         struct ieee80211vap *vap = ni->ni_vap;
1107         struct ifnet *ifp = sc->sc_ifp;
1108         struct ieee80211com *ic = ifp->if_l2com;
1109         struct rum_tx_data *data;
1110         struct ieee80211_frame *wh;
1111         const struct ieee80211_txparam *tp;
1112         struct ieee80211_key *k;
1113         uint32_t flags = 0;
1114         uint16_t dur;
1115
1116         RUM_LOCK_ASSERT(sc, MA_OWNED);
1117
1118         data = STAILQ_FIRST(&sc->tx_free);
1119         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1120         sc->tx_nfree--;
1121
1122         wh = mtod(m0, struct ieee80211_frame *);
1123         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1124                 k = ieee80211_crypto_encap(ni, m0);
1125                 if (k == NULL) {
1126                         m_freem(m0);
1127                         return ENOBUFS;
1128                 }
1129                 wh = mtod(m0, struct ieee80211_frame *);
1130         }
1131
1132         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1133
1134         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1135                 flags |= RT2573_TX_NEED_ACK;
1136
1137                 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1138                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1139                 *(uint16_t *)wh->i_dur = htole16(dur);
1140
1141                 /* tell hardware to add timestamp for probe responses */
1142                 if ((wh->i_fc[0] &
1143                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1144                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1145                         flags |= RT2573_TX_TIMESTAMP;
1146         }
1147
1148         data->m = m0;
1149         data->ni = ni;
1150         data->rate = tp->mgmtrate;
1151
1152         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate);
1153
1154         DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1155             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1156
1157         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1158         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1159
1160         return (0);
1161 }
1162
1163 static int
1164 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1165     const struct ieee80211_bpf_params *params)
1166 {
1167         struct ieee80211com *ic = ni->ni_ic;
1168         struct rum_tx_data *data;
1169         uint32_t flags;
1170         int rate, error;
1171
1172         RUM_LOCK_ASSERT(sc, MA_OWNED);
1173         KASSERT(params != NULL, ("no raw xmit params"));
1174
1175         rate = params->ibp_rate0;
1176         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1177                 m_freem(m0);
1178                 return EINVAL;
1179         }
1180         flags = 0;
1181         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1182                 flags |= RT2573_TX_NEED_ACK;
1183         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1184                 error = rum_sendprot(sc, m0, ni,
1185                     params->ibp_flags & IEEE80211_BPF_RTS ?
1186                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1187                     rate);
1188                 if (error || sc->tx_nfree == 0) {
1189                         m_freem(m0);
1190                         return ENOBUFS;
1191                 }
1192                 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1193         }
1194
1195         data = STAILQ_FIRST(&sc->tx_free);
1196         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1197         sc->tx_nfree--;
1198
1199         data->m = m0;
1200         data->ni = ni;
1201         data->rate = rate;
1202
1203         /* XXX need to setup descriptor ourself */
1204         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1205
1206         DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1207             m0->m_pkthdr.len, rate);
1208
1209         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1210         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1211
1212         return 0;
1213 }
1214
1215 static int
1216 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1217 {
1218         struct ieee80211vap *vap = ni->ni_vap;
1219         struct ifnet *ifp = sc->sc_ifp;
1220         struct ieee80211com *ic = ifp->if_l2com;
1221         struct rum_tx_data *data;
1222         struct ieee80211_frame *wh;
1223         const struct ieee80211_txparam *tp;
1224         struct ieee80211_key *k;
1225         uint32_t flags = 0;
1226         uint16_t dur;
1227         int error, rate;
1228
1229 #if 0 /* XXX swildner: lock needed? */
1230         RUM_LOCK_ASSERT(sc, MA_OWNED);
1231 #endif
1232
1233         wh = mtod(m0, struct ieee80211_frame *);
1234
1235         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1236         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1237                 rate = tp->mcastrate;
1238         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1239                 rate = tp->ucastrate;
1240         else
1241                 rate = ni->ni_txrate;
1242
1243         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1244                 k = ieee80211_crypto_encap(ni, m0);
1245                 if (k == NULL) {
1246                         m_freem(m0);
1247                         return ENOBUFS;
1248                 }
1249
1250                 /* packet header may have moved, reset our local pointer */
1251                 wh = mtod(m0, struct ieee80211_frame *);
1252         }
1253
1254         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1255                 int prot = IEEE80211_PROT_NONE;
1256                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1257                         prot = IEEE80211_PROT_RTSCTS;
1258                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1259                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1260                         prot = ic->ic_protmode;
1261                 if (prot != IEEE80211_PROT_NONE) {
1262                         error = rum_sendprot(sc, m0, ni, prot, rate);
1263                         if (error || sc->tx_nfree == 0) {
1264                                 m_freem(m0);
1265                                 return ENOBUFS;
1266                         }
1267                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1268                 }
1269         }
1270
1271         data = STAILQ_FIRST(&sc->tx_free);
1272         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1273         sc->tx_nfree--;
1274
1275         data->m = m0;
1276         data->ni = ni;
1277         data->rate = rate;
1278
1279         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1280                 flags |= RT2573_TX_NEED_ACK;
1281                 flags |= RT2573_TX_MORE_FRAG;
1282
1283                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1284                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1285                 *(uint16_t *)wh->i_dur = htole16(dur);
1286         }
1287
1288         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1289
1290         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1291             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1292
1293         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1294         RUM_LOCK(sc);
1295         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1296         RUM_UNLOCK(sc);
1297
1298         return 0;
1299 }
1300
1301 static void
1302 rum_start_locked(struct ifnet *ifp)
1303 {
1304         struct rum_softc *sc = ifp->if_softc;
1305         struct ieee80211_node *ni;
1306         struct mbuf *m;
1307
1308         if ((ifp->if_flags & IFF_RUNNING) == 0) {
1309                 return;
1310         }
1311         for (;;) {
1312                 m = ifq_dequeue(&ifp->if_snd);
1313                 if (m == NULL)
1314                         break;
1315                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1316                         ifq_prepend(&ifp->if_snd, m);
1317                         ifq_set_oactive(&ifp->if_snd);
1318                         break;
1319                 }
1320                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1321                 if (rum_tx_data(sc, m, ni) != 0) {
1322                         ieee80211_free_node(ni);
1323                         ifp->if_oerrors++;
1324                         break;
1325                 }
1326         }
1327 }
1328
1329 static void
1330 rum_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
1331 {
1332         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
1333         rum_start_locked(ifp);
1334 }
1335
1336 static int
1337 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred)
1338 {
1339         struct rum_softc *sc = ifp->if_softc;
1340         struct ieee80211com *ic = ifp->if_l2com;
1341         struct ifreq *ifr = (struct ifreq *) data;
1342         int error;
1343         int startall = 0;
1344
1345         RUM_LOCK(sc);
1346         error = sc->sc_detached ? ENXIO : 0;
1347         RUM_UNLOCK(sc);
1348         if (error)
1349                 return (error);
1350
1351         switch (cmd) {
1352         case SIOCSIFFLAGS:
1353                 RUM_LOCK(sc);
1354                 if (ifp->if_flags & IFF_UP) {
1355                         if ((ifp->if_flags & IFF_RUNNING) == 0) {
1356                                 rum_init_locked(sc);
1357                                 startall = 1;
1358                         } else
1359                                 rum_setpromisc(sc);
1360                 } else {
1361                         if (ifp->if_flags & IFF_RUNNING)
1362                                 rum_stop(sc);
1363                 }
1364                 RUM_UNLOCK(sc);
1365                 if (startall)
1366                         ieee80211_start_all(ic);
1367                 break;
1368         case SIOCGIFMEDIA:
1369                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1370                 break;
1371         case SIOCGIFADDR:
1372                 error = ether_ioctl(ifp, cmd, data);
1373                 break;
1374         default:
1375                 error = EINVAL;
1376                 break;
1377         }
1378         return error;
1379 }
1380
1381 static void
1382 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1383 {
1384         struct usb_device_request req;
1385         usb_error_t error;
1386
1387         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1388         req.bRequest = RT2573_READ_EEPROM;
1389         USETW(req.wValue, 0);
1390         USETW(req.wIndex, addr);
1391         USETW(req.wLength, len);
1392
1393         error = rum_do_request(sc, &req, buf);
1394         if (error != 0) {
1395                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1396                     usbd_errstr(error));
1397         }
1398 }
1399
1400 static uint32_t
1401 rum_read(struct rum_softc *sc, uint16_t reg)
1402 {
1403         uint32_t val;
1404
1405         rum_read_multi(sc, reg, &val, sizeof val);
1406
1407         return le32toh(val);
1408 }
1409
1410 static void
1411 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1412 {
1413         struct usb_device_request req;
1414         usb_error_t error;
1415
1416         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1417         req.bRequest = RT2573_READ_MULTI_MAC;
1418         USETW(req.wValue, 0);
1419         USETW(req.wIndex, reg);
1420         USETW(req.wLength, len);
1421
1422         error = rum_do_request(sc, &req, buf);
1423         if (error != 0) {
1424                 device_printf(sc->sc_dev,
1425                     "could not multi read MAC register: %s\n",
1426                     usbd_errstr(error));
1427         }
1428 }
1429
1430 static usb_error_t
1431 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1432 {
1433         uint32_t tmp = htole32(val);
1434
1435         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1436 }
1437
1438 static usb_error_t
1439 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1440 {
1441         struct usb_device_request req;
1442         usb_error_t error;
1443         size_t offset;
1444
1445         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1446         req.bRequest = RT2573_WRITE_MULTI_MAC;
1447         USETW(req.wValue, 0);
1448
1449         /* write at most 64 bytes at a time */
1450         for (offset = 0; offset < len; offset += 64) {
1451                 USETW(req.wIndex, reg + offset);
1452                 USETW(req.wLength, MIN(len - offset, 64));
1453
1454                 error = rum_do_request(sc, &req, (char *)buf + offset);
1455                 if (error != 0) {
1456                         device_printf(sc->sc_dev,
1457                             "could not multi write MAC register: %s\n",
1458                             usbd_errstr(error));
1459                         return (error);
1460                 }
1461         }
1462
1463         return (USB_ERR_NORMAL_COMPLETION);
1464 }
1465
1466 static void
1467 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1468 {
1469         uint32_t tmp;
1470         int ntries;
1471
1472         DPRINTFN(2, "reg=0x%08x\n", reg);
1473
1474         for (ntries = 0; ntries < 100; ntries++) {
1475                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1476                         break;
1477                 if (rum_pause(sc, hz / 100))
1478                         break;
1479         }
1480         if (ntries == 100) {
1481                 device_printf(sc->sc_dev, "could not write to BBP\n");
1482                 return;
1483         }
1484
1485         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1486         rum_write(sc, RT2573_PHY_CSR3, tmp);
1487 }
1488
1489 static uint8_t
1490 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1491 {
1492         uint32_t val;
1493         int ntries;
1494
1495         DPRINTFN(2, "reg=0x%08x\n", reg);
1496
1497         for (ntries = 0; ntries < 100; ntries++) {
1498                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1499                         break;
1500                 if (rum_pause(sc, hz / 100))
1501                         break;
1502         }
1503         if (ntries == 100) {
1504                 device_printf(sc->sc_dev, "could not read BBP\n");
1505                 return 0;
1506         }
1507
1508         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1509         rum_write(sc, RT2573_PHY_CSR3, val);
1510
1511         for (ntries = 0; ntries < 100; ntries++) {
1512                 val = rum_read(sc, RT2573_PHY_CSR3);
1513                 if (!(val & RT2573_BBP_BUSY))
1514                         return val & 0xff;
1515                 if (rum_pause(sc, hz / 100))
1516                         break;
1517         }
1518
1519         device_printf(sc->sc_dev, "could not read BBP\n");
1520         return 0;
1521 }
1522
1523 static void
1524 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1525 {
1526         uint32_t tmp;
1527         int ntries;
1528
1529         for (ntries = 0; ntries < 100; ntries++) {
1530                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1531                         break;
1532                 if (rum_pause(sc, hz / 100))
1533                         break;
1534         }
1535         if (ntries == 100) {
1536                 device_printf(sc->sc_dev, "could not write to RF\n");
1537                 return;
1538         }
1539
1540         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1541             (reg & 3);
1542         rum_write(sc, RT2573_PHY_CSR4, tmp);
1543
1544         /* remember last written value in sc */
1545         sc->rf_regs[reg] = val;
1546
1547         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1548 }
1549
1550 static void
1551 rum_select_antenna(struct rum_softc *sc)
1552 {
1553         uint8_t bbp4, bbp77;
1554         uint32_t tmp;
1555
1556         bbp4  = rum_bbp_read(sc, 4);
1557         bbp77 = rum_bbp_read(sc, 77);
1558
1559         /* TBD */
1560
1561         /* make sure Rx is disabled before switching antenna */
1562         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1563         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1564
1565         rum_bbp_write(sc,  4, bbp4);
1566         rum_bbp_write(sc, 77, bbp77);
1567
1568         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1569 }
1570
1571 /*
1572  * Enable multi-rate retries for frames sent at OFDM rates.
1573  * In 802.11b/g mode, allow fallback to CCK rates.
1574  */
1575 static void
1576 rum_enable_mrr(struct rum_softc *sc)
1577 {
1578         struct ifnet *ifp = sc->sc_ifp;
1579         struct ieee80211com *ic = ifp->if_l2com;
1580         uint32_t tmp;
1581
1582         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1583
1584         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1585         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1586                 tmp |= RT2573_MRR_CCK_FALLBACK;
1587         tmp |= RT2573_MRR_ENABLED;
1588
1589         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1590 }
1591
1592 static void
1593 rum_set_txpreamble(struct rum_softc *sc)
1594 {
1595         struct ifnet *ifp = sc->sc_ifp;
1596         struct ieee80211com *ic = ifp->if_l2com;
1597         uint32_t tmp;
1598
1599         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1600
1601         tmp &= ~RT2573_SHORT_PREAMBLE;
1602         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1603                 tmp |= RT2573_SHORT_PREAMBLE;
1604
1605         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1606 }
1607
1608 static void
1609 rum_set_basicrates(struct rum_softc *sc)
1610 {
1611         struct ifnet *ifp = sc->sc_ifp;
1612         struct ieee80211com *ic = ifp->if_l2com;
1613
1614         /* update basic rate set */
1615         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1616                 /* 11b basic rates: 1, 2Mbps */
1617                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1618         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1619                 /* 11a basic rates: 6, 12, 24Mbps */
1620                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1621         } else {
1622                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1623                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1624         }
1625 }
1626
1627 /*
1628  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1629  * driver.
1630  */
1631 static void
1632 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1633 {
1634         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1635         uint32_t tmp;
1636
1637         /* update all BBP registers that depend on the band */
1638         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1639         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1640         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1641                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1642                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1643         }
1644         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1645             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1646                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1647         }
1648
1649         sc->bbp17 = bbp17;
1650         rum_bbp_write(sc,  17, bbp17);
1651         rum_bbp_write(sc,  96, bbp96);
1652         rum_bbp_write(sc, 104, bbp104);
1653
1654         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1655             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1656                 rum_bbp_write(sc, 75, 0x80);
1657                 rum_bbp_write(sc, 86, 0x80);
1658                 rum_bbp_write(sc, 88, 0x80);
1659         }
1660
1661         rum_bbp_write(sc, 35, bbp35);
1662         rum_bbp_write(sc, 97, bbp97);
1663         rum_bbp_write(sc, 98, bbp98);
1664
1665         tmp = rum_read(sc, RT2573_PHY_CSR0);
1666         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1667         if (IEEE80211_IS_CHAN_2GHZ(c))
1668                 tmp |= RT2573_PA_PE_2GHZ;
1669         else
1670                 tmp |= RT2573_PA_PE_5GHZ;
1671         rum_write(sc, RT2573_PHY_CSR0, tmp);
1672 }
1673
1674 static void
1675 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1676 {
1677         struct ifnet *ifp = sc->sc_ifp;
1678         struct ieee80211com *ic = ifp->if_l2com;
1679         const struct rfprog *rfprog;
1680         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1681         int8_t power;
1682         int i, chan;
1683
1684         chan = ieee80211_chan2ieee(ic, c);
1685         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1686                 return;
1687
1688         /* select the appropriate RF settings based on what EEPROM says */
1689         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1690                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1691
1692         /* find the settings for this channel (we know it exists) */
1693         for (i = 0; rfprog[i].chan != chan; i++);
1694
1695         power = sc->txpow[i];
1696         if (power < 0) {
1697                 bbp94 += power;
1698                 power = 0;
1699         } else if (power > 31) {
1700                 bbp94 += power - 31;
1701                 power = 31;
1702         }
1703
1704         /*
1705          * If we are switching from the 2GHz band to the 5GHz band or
1706          * vice-versa, BBP registers need to be reprogrammed.
1707          */
1708         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1709                 rum_select_band(sc, c);
1710                 rum_select_antenna(sc);
1711         }
1712         ic->ic_curchan = c;
1713
1714         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1715         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1716         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1717         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1718
1719         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1720         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1721         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1722         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1723
1724         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1725         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1726         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1727         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1728
1729         rum_pause(sc, hz / 100);
1730
1731         /* enable smart mode for MIMO-capable RFs */
1732         bbp3 = rum_bbp_read(sc, 3);
1733
1734         bbp3 &= ~RT2573_SMART_MODE;
1735         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1736                 bbp3 |= RT2573_SMART_MODE;
1737
1738         rum_bbp_write(sc, 3, bbp3);
1739
1740         if (bbp94 != RT2573_BBPR94_DEFAULT)
1741                 rum_bbp_write(sc, 94, bbp94);
1742
1743         /* give the chip some extra time to do the switchover */
1744         rum_pause(sc, hz / 100);
1745 }
1746
1747 /*
1748  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1749  * and HostAP operating modes.
1750  */
1751 static void
1752 rum_enable_tsf_sync(struct rum_softc *sc)
1753 {
1754         struct ifnet *ifp = sc->sc_ifp;
1755         struct ieee80211com *ic = ifp->if_l2com;
1756         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1757         uint32_t tmp;
1758
1759         if (vap->iv_opmode != IEEE80211_M_STA) {
1760                 /*
1761                  * Change default 16ms TBTT adjustment to 8ms.
1762                  * Must be done before enabling beacon generation.
1763                  */
1764                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1765         }
1766
1767         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1768
1769         /* set beacon interval (in 1/16ms unit) */
1770         tmp |= vap->iv_bss->ni_intval * 16;
1771
1772         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1773         if (vap->iv_opmode == IEEE80211_M_STA)
1774                 tmp |= RT2573_TSF_MODE(1);
1775         else
1776                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1777
1778         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1779 }
1780
1781 static void
1782 rum_enable_tsf(struct rum_softc *sc)
1783 {
1784         rum_write(sc, RT2573_TXRX_CSR9,
1785             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1786             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1787 }
1788
1789 static void
1790 rum_update_slot(struct ifnet *ifp)
1791 {
1792         struct rum_softc *sc = ifp->if_softc;
1793         struct ieee80211com *ic = ifp->if_l2com;
1794         uint8_t slottime;
1795         uint32_t tmp;
1796
1797         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1798
1799         tmp = rum_read(sc, RT2573_MAC_CSR9);
1800         tmp = (tmp & ~0xff) | slottime;
1801         rum_write(sc, RT2573_MAC_CSR9, tmp);
1802
1803         DPRINTF("setting slot time to %uus\n", slottime);
1804 }
1805
1806 static void
1807 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1808 {
1809         uint32_t tmp;
1810
1811         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1812         rum_write(sc, RT2573_MAC_CSR4, tmp);
1813
1814         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1815         rum_write(sc, RT2573_MAC_CSR5, tmp);
1816 }
1817
1818 static void
1819 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1820 {
1821         uint32_t tmp;
1822
1823         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1824         rum_write(sc, RT2573_MAC_CSR2, tmp);
1825
1826         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1827         rum_write(sc, RT2573_MAC_CSR3, tmp);
1828 }
1829
1830 static void
1831 rum_setpromisc(struct rum_softc *sc)
1832 {
1833         struct ifnet *ifp = sc->sc_ifp;
1834         uint32_t tmp;
1835
1836         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1837
1838         tmp &= ~RT2573_DROP_NOT_TO_ME;
1839         if (!(ifp->if_flags & IFF_PROMISC))
1840                 tmp |= RT2573_DROP_NOT_TO_ME;
1841
1842         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1843
1844         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1845             "entering" : "leaving");
1846 }
1847
1848 static void
1849 rum_update_promisc(struct ifnet *ifp)
1850 {
1851         struct rum_softc *sc = ifp->if_softc;
1852
1853         if ((ifp->if_flags & IFF_RUNNING) == 0)
1854                 return;
1855
1856         RUM_LOCK(sc);
1857         rum_setpromisc(sc);
1858         RUM_UNLOCK(sc);
1859 }
1860
1861 static void
1862 rum_update_mcast(struct ifnet *ifp)
1863 {
1864         static int warning_printed;
1865
1866         if (warning_printed == 0) {
1867                 if_printf(ifp, "need to implement %s\n", __func__);
1868                 warning_printed = 1;
1869         }
1870 }
1871
1872 static const char *
1873 rum_get_rf(int rev)
1874 {
1875         switch (rev) {
1876         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1877         case RT2573_RF_2528:    return "RT2528";
1878         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1879         case RT2573_RF_5226:    return "RT5226";
1880         default:                return "unknown";
1881         }
1882 }
1883
1884 static void
1885 rum_read_eeprom(struct rum_softc *sc)
1886 {
1887         uint16_t val;
1888 #ifdef RUM_DEBUG
1889         int i;
1890 #endif
1891
1892         /* read MAC address */
1893         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1894
1895         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1896         val = le16toh(val);
1897         sc->rf_rev =   (val >> 11) & 0x1f;
1898         sc->hw_radio = (val >> 10) & 0x1;
1899         sc->rx_ant =   (val >> 4)  & 0x3;
1900         sc->tx_ant =   (val >> 2)  & 0x3;
1901         sc->nb_ant =   val & 0x3;
1902
1903         DPRINTF("RF revision=%d\n", sc->rf_rev);
1904
1905         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1906         val = le16toh(val);
1907         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1908         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1909
1910         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1911             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1912
1913         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1914         val = le16toh(val);
1915         if ((val & 0xff) != 0xff)
1916                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1917
1918         /* Only [-10, 10] is valid */
1919         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1920                 sc->rssi_2ghz_corr = 0;
1921
1922         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1923         val = le16toh(val);
1924         if ((val & 0xff) != 0xff)
1925                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1926
1927         /* Only [-10, 10] is valid */
1928         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1929                 sc->rssi_5ghz_corr = 0;
1930
1931         if (sc->ext_2ghz_lna)
1932                 sc->rssi_2ghz_corr -= 14;
1933         if (sc->ext_5ghz_lna)
1934                 sc->rssi_5ghz_corr -= 14;
1935
1936         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1937             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1938
1939         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1940         val = le16toh(val);
1941         if ((val & 0xff) != 0xff)
1942                 sc->rffreq = val & 0xff;
1943
1944         DPRINTF("RF freq=%d\n", sc->rffreq);
1945
1946         /* read Tx power for all a/b/g channels */
1947         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1948         /* XXX default Tx power for 802.11a channels */
1949         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1950 #ifdef RUM_DEBUG
1951         for (i = 0; i < 14; i++)
1952                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1953 #endif
1954
1955         /* read default values for BBP registers */
1956         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1957 #ifdef RUM_DEBUG
1958         for (i = 0; i < 14; i++) {
1959                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1960                         continue;
1961                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1962                     sc->bbp_prom[i].val);
1963         }
1964 #endif
1965 }
1966
1967 static int
1968 rum_bbp_init(struct rum_softc *sc)
1969 {
1970         int i, ntries;
1971
1972         /* wait for BBP to be ready */
1973         for (ntries = 0; ntries < 100; ntries++) {
1974                 const uint8_t val = rum_bbp_read(sc, 0);
1975                 if (val != 0 && val != 0xff)
1976                         break;
1977                 if (rum_pause(sc, hz / 100))
1978                         break;
1979         }
1980         if (ntries == 100) {
1981                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1982                 return EIO;
1983         }
1984
1985         /* initialize BBP registers to default values */
1986         for (i = 0; i < N(rum_def_bbp); i++)
1987                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1988
1989         /* write vendor-specific BBP values (from EEPROM) */
1990         for (i = 0; i < 16; i++) {
1991                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1992                         continue;
1993                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
1994         }
1995
1996         return 0;
1997 }
1998
1999 static void
2000 rum_init_locked(struct rum_softc *sc)
2001 {
2002         struct ifnet *ifp = sc->sc_ifp;
2003         struct ieee80211com *ic = ifp->if_l2com;
2004         uint32_t tmp;
2005         usb_error_t error;
2006         int i, ntries;
2007
2008         RUM_LOCK_ASSERT(sc, MA_OWNED);
2009
2010         rum_stop(sc);
2011
2012         /* initialize MAC registers to default values */
2013         for (i = 0; i < N(rum_def_mac); i++)
2014                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
2015
2016         /* set host ready */
2017         rum_write(sc, RT2573_MAC_CSR1, 3);
2018         rum_write(sc, RT2573_MAC_CSR1, 0);
2019
2020         /* wait for BBP/RF to wakeup */
2021         for (ntries = 0; ntries < 100; ntries++) {
2022                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
2023                         break;
2024                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
2025                 if (rum_pause(sc, hz / 100))
2026                         break;
2027         }
2028         if (ntries == 100) {
2029                 device_printf(sc->sc_dev,
2030                     "timeout waiting for BBP/RF to wakeup\n");
2031                 goto fail;
2032         }
2033
2034         if ((error = rum_bbp_init(sc)) != 0)
2035                 goto fail;
2036
2037         /* select default channel */
2038         rum_select_band(sc, ic->ic_curchan);
2039         rum_select_antenna(sc);
2040         rum_set_chan(sc, ic->ic_curchan);
2041
2042         /* clear STA registers */
2043         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2044
2045         rum_set_macaddr(sc, IF_LLADDR(ifp));
2046
2047         /* initialize ASIC */
2048         rum_write(sc, RT2573_MAC_CSR1, 4);
2049
2050         /*
2051          * Allocate Tx and Rx xfer queues.
2052          */
2053         rum_setup_tx_list(sc);
2054
2055         /* update Rx filter */
2056         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2057
2058         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2059         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2060                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2061                        RT2573_DROP_ACKCTS;
2062                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2063                         tmp |= RT2573_DROP_TODS;
2064                 if (!(ifp->if_flags & IFF_PROMISC))
2065                         tmp |= RT2573_DROP_NOT_TO_ME;
2066         }
2067         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2068
2069         ifq_clr_oactive(&ifp->if_snd);
2070         ifp->if_flags |= IFF_RUNNING;
2071         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2072         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2073         return;
2074
2075 fail:   rum_stop(sc);
2076 #undef N
2077 }
2078
2079 static void
2080 rum_init(void *priv)
2081 {
2082         struct rum_softc *sc = priv;
2083         struct ifnet *ifp = sc->sc_ifp;
2084         struct ieee80211com *ic = ifp->if_l2com;
2085
2086         RUM_LOCK(sc);
2087         rum_init_locked(sc);
2088         RUM_UNLOCK(sc);
2089
2090         if (ifp->if_flags & IFF_RUNNING)
2091                 ieee80211_start_all(ic);                /* start all vap's */
2092 }
2093
2094 static void
2095 rum_stop(struct rum_softc *sc)
2096 {
2097         struct ifnet *ifp = sc->sc_ifp;
2098         uint32_t tmp;
2099
2100         RUM_LOCK_ASSERT(sc, MA_OWNED);
2101
2102         ifp->if_flags &= ~IFF_RUNNING;
2103         ifq_clr_oactive(&ifp->if_snd);
2104
2105         RUM_UNLOCK(sc);
2106
2107         /*
2108          * Drain the USB transfers, if not already drained:
2109          */
2110         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2111         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2112
2113         RUM_LOCK(sc);
2114
2115         rum_unsetup_tx_list(sc);
2116
2117         /* disable Rx */
2118         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2119         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2120
2121         /* reset ASIC */
2122         rum_write(sc, RT2573_MAC_CSR1, 3);
2123         rum_write(sc, RT2573_MAC_CSR1, 0);
2124 }
2125
2126 static void
2127 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2128 {
2129         struct usb_device_request req;
2130         uint16_t reg = RT2573_MCU_CODE_BASE;
2131         usb_error_t err;
2132
2133         /* copy firmware image into NIC */
2134         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2135                 err = rum_write(sc, reg, UGETDW(ucode));
2136                 if (err) {
2137                         /* firmware already loaded ? */
2138                         device_printf(sc->sc_dev, "Firmware load "
2139                             "failure! (ignored)\n");
2140                         break;
2141                 }
2142         }
2143
2144         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2145         req.bRequest = RT2573_MCU_CNTL;
2146         USETW(req.wValue, RT2573_MCU_RUN);
2147         USETW(req.wIndex, 0);
2148         USETW(req.wLength, 0);
2149
2150         err = rum_do_request(sc, &req, NULL);
2151         if (err != 0) {
2152                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2153                     usbd_errstr(err));
2154         }
2155
2156         /* give the chip some time to boot */
2157         rum_pause(sc, hz / 8);
2158 }
2159
2160 static void
2161 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2162 {
2163         struct ieee80211com *ic = vap->iv_ic;
2164         const struct ieee80211_txparam *tp;
2165         struct rum_tx_desc desc;
2166         struct mbuf *m0;
2167
2168         if (vap->iv_bss->ni_chan == IEEE80211_CHAN_ANYC)
2169                 return;
2170         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2171                 return;
2172
2173         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2174         if (m0 == NULL)
2175                 return;
2176
2177         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2178         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2179             m0->m_pkthdr.len, tp->mgmtrate);
2180
2181         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2182         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2183
2184         /* copy beacon header and payload into NIC memory */
2185         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2186             m0->m_pkthdr.len);
2187
2188         m_freem(m0);
2189 }
2190
2191 static int
2192 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2193     const struct ieee80211_bpf_params *params)
2194 {
2195         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2196         struct rum_softc *sc = ifp->if_softc;
2197
2198         RUM_LOCK(sc);
2199         /* prevent management frames from being sent if we're not ready */
2200         if (!(ifp->if_flags & IFF_RUNNING)) {
2201                 RUM_UNLOCK(sc);
2202                 m_freem(m);
2203                 ieee80211_free_node(ni);
2204                 return ENETDOWN;
2205         }
2206         if (sc->tx_nfree < RUM_TX_MINFREE) {
2207                 ifq_set_oactive(&ifp->if_snd);
2208                 RUM_UNLOCK(sc);
2209                 m_freem(m);
2210                 ieee80211_free_node(ni);
2211                 return EIO;
2212         }
2213
2214         ifp->if_opackets++;
2215
2216         if (params == NULL) {
2217                 /*
2218                  * Legacy path; interpret frame contents to decide
2219                  * precisely how to send the frame.
2220                  */
2221                 if (rum_tx_mgt(sc, m, ni) != 0)
2222                         goto bad;
2223         } else {
2224                 /*
2225                  * Caller supplied explicit parameters to use in
2226                  * sending the frame.
2227                  */
2228                 if (rum_tx_raw(sc, m, ni, params) != 0)
2229                         goto bad;
2230         }
2231         RUM_UNLOCK(sc);
2232
2233         return 0;
2234 bad:
2235         ifp->if_oerrors++;
2236         RUM_UNLOCK(sc);
2237         ieee80211_free_node(ni);
2238         return EIO;
2239 }
2240
2241 static void
2242 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2243 {
2244         struct ieee80211vap *vap = ni->ni_vap;
2245         struct rum_vap *rvp = RUM_VAP(vap);
2246
2247         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2248         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2249
2250         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2251 }
2252
2253 static void
2254 rum_ratectl_timeout(void *arg)
2255 {
2256         struct rum_vap *rvp = arg;
2257         struct ieee80211vap *vap = &rvp->vap;
2258         struct ieee80211com *ic = vap->iv_ic;
2259
2260         ieee80211_runtask(ic, &rvp->ratectl_task);
2261 }
2262
2263 static void
2264 rum_ratectl_task(void *arg, int pending)
2265 {
2266         struct rum_vap *rvp = arg;
2267         struct ieee80211vap *vap = &rvp->vap;
2268         struct ieee80211com *ic = vap->iv_ic;
2269         struct ifnet *ifp = ic->ic_ifp;
2270         struct rum_softc *sc = ifp->if_softc;
2271         struct ieee80211_node *ni;
2272         int ok, fail;
2273         int sum, retrycnt;
2274
2275         RUM_LOCK(sc);
2276         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2277         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2278
2279         ok = (le32toh(sc->sta[4]) & 0xffff) +   /* TX no-retry ok count */
2280             (le32toh(sc->sta[4]) >> 16) +       /* TX one-retry ok count */
2281             (le32toh(sc->sta[5]) & 0xffff);     /* TX more-retry ok count */
2282         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2283         sum = ok+fail;
2284         retrycnt = (le32toh(sc->sta[4]) >> 16) +
2285             (le32toh(sc->sta[5]) & 0xffff) + fail;
2286
2287         ni = ieee80211_ref_node(vap->iv_bss);
2288         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2289         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2290         ieee80211_free_node(ni);
2291
2292         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2293
2294         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2295         RUM_UNLOCK(sc);
2296 }
2297
2298 static void
2299 rum_scan_start(struct ieee80211com *ic)
2300 {
2301         struct ifnet *ifp = ic->ic_ifp;
2302         struct rum_softc *sc = ifp->if_softc;
2303         uint32_t tmp;
2304
2305         RUM_LOCK(sc);
2306         /* abort TSF synchronization */
2307         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2308         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2309         rum_set_bssid(sc, ifp->if_broadcastaddr);
2310         RUM_UNLOCK(sc);
2311
2312 }
2313
2314 static void
2315 rum_scan_end(struct ieee80211com *ic)
2316 {
2317         struct rum_softc *sc = ic->ic_ifp->if_softc;
2318
2319         RUM_LOCK(sc);
2320         rum_enable_tsf_sync(sc);
2321         rum_set_bssid(sc, sc->sc_bssid);
2322         RUM_UNLOCK(sc);
2323
2324 }
2325
2326 static void
2327 rum_set_channel(struct ieee80211com *ic)
2328 {
2329         struct rum_softc *sc = ic->ic_ifp->if_softc;
2330
2331         RUM_LOCK(sc);
2332         rum_set_chan(sc, ic->ic_curchan);
2333         RUM_UNLOCK(sc);
2334 }
2335
2336 static int
2337 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2338 {
2339         struct ifnet *ifp = sc->sc_ifp;
2340         struct ieee80211com *ic = ifp->if_l2com;
2341         int lna, agc, rssi;
2342
2343         lna = (raw >> 5) & 0x3;
2344         agc = raw & 0x1f;
2345
2346         if (lna == 0) {
2347                 /*
2348                  * No RSSI mapping
2349                  *
2350                  * NB: Since RSSI is relative to noise floor, -1 is
2351                  *     adequate for caller to know error happened.
2352                  */
2353                 return -1;
2354         }
2355
2356         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2357
2358         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2359                 rssi += sc->rssi_2ghz_corr;
2360
2361                 if (lna == 1)
2362                         rssi -= 64;
2363                 else if (lna == 2)
2364                         rssi -= 74;
2365                 else if (lna == 3)
2366                         rssi -= 90;
2367         } else {
2368                 rssi += sc->rssi_5ghz_corr;
2369
2370                 if (!sc->ext_5ghz_lna && lna != 1)
2371                         rssi += 4;
2372
2373                 if (lna == 1)
2374                         rssi -= 64;
2375                 else if (lna == 2)
2376                         rssi -= 86;
2377                 else if (lna == 3)
2378                         rssi -= 100;
2379         }
2380         return rssi;
2381 }
2382
2383 static int
2384 rum_pause(struct rum_softc *sc, int timeout)
2385 {
2386         usb_pause_ls(lockowned(&sc->sc_lock) ? &sc->sc_lock : NULL,
2387             &wlan_global_serializer, timeout + 1);
2388         return (0);
2389 }
2390
2391 static device_method_t rum_methods[] = {
2392         /* Device interface */
2393         DEVMETHOD(device_probe,         rum_match),
2394         DEVMETHOD(device_attach,        rum_attach),
2395         DEVMETHOD(device_detach,        rum_detach),
2396         DEVMETHOD_END
2397 };
2398
2399 static driver_t rum_driver = {
2400         .name = "rum",
2401         .methods = rum_methods,
2402         .size = sizeof(struct rum_softc),
2403 };
2404
2405 static devclass_t rum_devclass;
2406
2407 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0);
2408 MODULE_DEPEND(rum, wlan, 1, 1, 1);
2409 MODULE_DEPEND(rum, usb, 1, 1, 1);
2410 MODULE_VERSION(rum, 1);