sys/dev/usb/wlan/if_rum.c

   1 /*      $FreeBSD$       */
   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 #include <sys/cdefs.h>
  22 __FBSDID("$FreeBSD$");
  23
  24 /*-
  25  * Ralink Technology RT2501USB/RT2601USB chipset driver
  26  * http://www.ralinktech.com.tw/
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/sockio.h>
  31 #include <sys/sysctl.h>
  32 #include <sys/lock.h>
  33 #include <sys/mutex.h>
  34 #include <sys/mbuf.h>
  35 #include <sys/kernel.h>
  36 #include <sys/socket.h>
  37 #include <sys/systm.h>
  38 #include <sys/malloc.h>
  39 #include <sys/module.h>
  40 #include <sys/bus.h>
  41 #include <sys/endian.h>
  42 #include <sys/kdb.h>
  43
  44 #include <machine/bus.h>
  45 #include <machine/resource.h>
  46 #include <sys/rman.h>
  47
  48 #include <net/bpf.h>
  49 #include <net/if.h>
  50 #include <net/if_arp.h>
  51 #include <net/ethernet.h>
  52 #include <net/if_dl.h>
  53 #include <net/if_media.h>
  54 #include <net/if_types.h>
  55
  56 #ifdef INET
  57 #include <netinet/in.h>
  58 #include <netinet/in_systm.h>
  59 #include <netinet/in_var.h>
  60 #include <netinet/if_ether.h>
  61 #include <netinet/ip.h>
  62 #endif
  63
  64 #include <net80211/ieee80211_var.h>
  65 #include <net80211/ieee80211_regdomain.h>
  66 #include <net80211/ieee80211_radiotap.h>
  67 #include <net80211/ieee80211_ratectl.h>
  68
  69 #include <dev/usb/usb.h>
  70 #include <dev/usb/usbdi.h>
  71 #include "usbdevs.h"
  72
  73 #define USB_DEBUG_VAR rum_debug
  74 #include <dev/usb/usb_debug.h>
  75
  76 #include <dev/usb/wlan/if_rumreg.h>
  77 #include <dev/usb/wlan/if_rumvar.h>
  78 #include <dev/usb/wlan/if_rumfw.h>
  79
  80 #ifdef USB_DEBUG
  81 static int rum_debug = 0;
  82
  83 static SYSCTL_NODE(_hw_usb, OID_AUTO, rum, CTLFLAG_RW, 0, "USB rum");
  84 SYSCTL_INT(_hw_usb_rum, OID_AUTO, debug, CTLFLAG_RW, &rum_debug, 0,
  85     "Debug level");
  86 #endif
  87
  88 #define N(a)    ((int)(sizeof (a) / sizeof ((a)[0])))
  89
  90 static const STRUCT_USB_HOST_ID rum_devs[] = {
  91 #define RUM_DEV(v,p)  { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
  92     RUM_DEV(ABOCOM, HWU54DM),
  93     RUM_DEV(ABOCOM, RT2573_2),
  94     RUM_DEV(ABOCOM, RT2573_3),
  95     RUM_DEV(ABOCOM, RT2573_4),
  96     RUM_DEV(ABOCOM, WUG2700),
  97     RUM_DEV(AMIT, CGWLUSB2GO),
  98     RUM_DEV(ASUS, RT2573_1),
  99     RUM_DEV(ASUS, RT2573_2),
 100     RUM_DEV(BELKIN, F5D7050A),
 101     RUM_DEV(BELKIN, F5D9050V3),
 102     RUM_DEV(CISCOLINKSYS, WUSB54GC),
 103     RUM_DEV(CISCOLINKSYS, WUSB54GR),
 104     RUM_DEV(CONCEPTRONIC2, C54RU2),
 105     RUM_DEV(COREGA, CGWLUSB2GL),
 106     RUM_DEV(COREGA, CGWLUSB2GPX),
 107     RUM_DEV(DICKSMITH, CWD854F),
 108     RUM_DEV(DICKSMITH, RT2573),
 109     RUM_DEV(EDIMAX, EW7318USG),
 110     RUM_DEV(DLINK2, DWLG122C1),
 111     RUM_DEV(DLINK2, WUA1340),
 112     RUM_DEV(DLINK2, DWA111),
 113     RUM_DEV(DLINK2, DWA110),
 114     RUM_DEV(GIGABYTE, GNWB01GS),
 115     RUM_DEV(GIGABYTE, GNWI05GS),
 116     RUM_DEV(GIGASET, RT2573),
 117     RUM_DEV(GOODWAY, RT2573),
 118     RUM_DEV(GUILLEMOT, HWGUSB254LB),
 119     RUM_DEV(GUILLEMOT, HWGUSB254V2AP),
 120     RUM_DEV(HUAWEI3COM, WUB320G),
 121     RUM_DEV(MELCO, G54HP),
 122     RUM_DEV(MELCO, SG54HP),
 123     RUM_DEV(MELCO, SG54HG),
 124     RUM_DEV(MELCO, WLIUCG),
 125     RUM_DEV(MELCO, WLRUCG),
 126     RUM_DEV(MELCO, WLRUCGAOSS),
 127     RUM_DEV(MSI, RT2573_1),
 128     RUM_DEV(MSI, RT2573_2),
 129     RUM_DEV(MSI, RT2573_3),
 130     RUM_DEV(MSI, RT2573_4),
 131     RUM_DEV(NOVATECH, RT2573),
 132     RUM_DEV(PLANEX2, GWUS54HP),
 133     RUM_DEV(PLANEX2, GWUS54MINI2),
 134     RUM_DEV(PLANEX2, GWUSMM),
 135     RUM_DEV(QCOM, RT2573),
 136     RUM_DEV(QCOM, RT2573_2),
 137     RUM_DEV(QCOM, RT2573_3),
 138     RUM_DEV(RALINK, RT2573),
 139     RUM_DEV(RALINK, RT2573_2),
 140     RUM_DEV(RALINK, RT2671),
 141     RUM_DEV(SITECOMEU, WL113R2),
 142     RUM_DEV(SITECOMEU, WL172),
 143     RUM_DEV(SPARKLAN, RT2573),
 144     RUM_DEV(SURECOM, RT2573),
 145 #undef RUM_DEV
 146 };
 147
 148 static device_probe_t rum_match;
 149 static device_attach_t rum_attach;
 150 static device_detach_t rum_detach;
 151
 152 static usb_callback_t rum_bulk_read_callback;
 153 static usb_callback_t rum_bulk_write_callback;
 154
 155 static usb_error_t      rum_do_request(struct rum_softc *sc,
 156                             struct usb_device_request *req, void *data);
 157 static struct ieee80211vap *rum_vap_create(struct ieee80211com *,
 158                             const char [IFNAMSIZ], int, enum ieee80211_opmode,
 159                             int, const uint8_t [IEEE80211_ADDR_LEN],
 160                             const uint8_t [IEEE80211_ADDR_LEN]);
 161 static void             rum_vap_delete(struct ieee80211vap *);
 162 static void             rum_tx_free(struct rum_tx_data *, int);
 163 static void             rum_setup_tx_list(struct rum_softc *);
 164 static void             rum_unsetup_tx_list(struct rum_softc *);
 165 static int              rum_newstate(struct ieee80211vap *,
 166                             enum ieee80211_state, int);
 167 static void             rum_setup_tx_desc(struct rum_softc *,
 168                             struct rum_tx_desc *, uint32_t, uint16_t, int,
 169                             int);
 170 static int              rum_tx_mgt(struct rum_softc *, struct mbuf *,
 171                             struct ieee80211_node *);
 172 static int              rum_tx_raw(struct rum_softc *, struct mbuf *,
 173                             struct ieee80211_node *,
 174                             const struct ieee80211_bpf_params *);
 175 static int              rum_tx_data(struct rum_softc *, struct mbuf *,
 176                             struct ieee80211_node *);
 177 static void             rum_start(struct ifnet *);
 178 static int              rum_ioctl(struct ifnet *, u_long, caddr_t);
 179 static void             rum_eeprom_read(struct rum_softc *, uint16_t, void *,
 180                             int);
 181 static uint32_t         rum_read(struct rum_softc *, uint16_t);
 182 static void             rum_read_multi(struct rum_softc *, uint16_t, void *,
 183                             int);
 184 static usb_error_t      rum_write(struct rum_softc *, uint16_t, uint32_t);
 185 static usb_error_t      rum_write_multi(struct rum_softc *, uint16_t, void *,
 186                             size_t);
 187 static void             rum_bbp_write(struct rum_softc *, uint8_t, uint8_t);
 188 static uint8_t          rum_bbp_read(struct rum_softc *, uint8_t);
 189 static void             rum_rf_write(struct rum_softc *, uint8_t, uint32_t);
 190 static void             rum_select_antenna(struct rum_softc *);
 191 static void             rum_enable_mrr(struct rum_softc *);
 192 static void             rum_set_txpreamble(struct rum_softc *);
 193 static void             rum_set_basicrates(struct rum_softc *);
 194 static void             rum_select_band(struct rum_softc *,
 195                             struct ieee80211_channel *);
 196 static void             rum_set_chan(struct rum_softc *,
 197                             struct ieee80211_channel *);
 198 static void             rum_enable_tsf_sync(struct rum_softc *);
 199 static void             rum_enable_tsf(struct rum_softc *);
 200 static void             rum_update_slot(struct ifnet *);
 201 static void             rum_set_bssid(struct rum_softc *, const uint8_t *);
 202 static void             rum_set_macaddr(struct rum_softc *, const uint8_t *);
 203 static void             rum_update_mcast(struct ifnet *);
 204 static void             rum_update_promisc(struct ifnet *);
 205 static void             rum_setpromisc(struct rum_softc *);
 206 static const char       *rum_get_rf(int);
 207 static void             rum_read_eeprom(struct rum_softc *);
 208 static int              rum_bbp_init(struct rum_softc *);
 209 static void             rum_init_locked(struct rum_softc *);
 210 static void             rum_init(void *);
 211 static void             rum_stop(struct rum_softc *);
 212 static void             rum_load_microcode(struct rum_softc *, const uint8_t *,
 213                             size_t);
 214 static void             rum_prepare_beacon(struct rum_softc *,
 215                             struct ieee80211vap *);
 216 static int              rum_raw_xmit(struct ieee80211_node *, struct mbuf *,
 217                             const struct ieee80211_bpf_params *);
 218 static void             rum_scan_start(struct ieee80211com *);
 219 static void             rum_scan_end(struct ieee80211com *);
 220 static void             rum_set_channel(struct ieee80211com *);
 221 static int              rum_get_rssi(struct rum_softc *, uint8_t);
 222 static void             rum_ratectl_start(struct rum_softc *,
 223                             struct ieee80211_node *);
 224 static void             rum_ratectl_timeout(void *);
 225 static void             rum_ratectl_task(void *, int);
 226 static int              rum_pause(struct rum_softc *, int);
 227
 228 static const struct {
 229         uint32_t        reg;
 230         uint32_t        val;
 231 } rum_def_mac[] = {
 232         { RT2573_TXRX_CSR0,  0x025fb032 },
 233         { RT2573_TXRX_CSR1,  0x9eaa9eaf },
 234         { RT2573_TXRX_CSR2,  0x8a8b8c8d },
 235         { RT2573_TXRX_CSR3,  0x00858687 },
 236         { RT2573_TXRX_CSR7,  0x2e31353b },
 237         { RT2573_TXRX_CSR8,  0x2a2a2a2c },
 238         { RT2573_TXRX_CSR15, 0x0000000f },
 239         { RT2573_MAC_CSR6,   0x00000fff },
 240         { RT2573_MAC_CSR8,   0x016c030a },
 241         { RT2573_MAC_CSR10,  0x00000718 },
 242         { RT2573_MAC_CSR12,  0x00000004 },
 243         { RT2573_MAC_CSR13,  0x00007f00 },
 244         { RT2573_SEC_CSR0,   0x00000000 },
 245         { RT2573_SEC_CSR1,   0x00000000 },
 246         { RT2573_SEC_CSR5,   0x00000000 },
 247         { RT2573_PHY_CSR1,   0x000023b0 },
 248         { RT2573_PHY_CSR5,   0x00040a06 },
 249         { RT2573_PHY_CSR6,   0x00080606 },
 250         { RT2573_PHY_CSR7,   0x00000408 },
 251         { RT2573_AIFSN_CSR,  0x00002273 },
 252         { RT2573_CWMIN_CSR,  0x00002344 },
 253         { RT2573_CWMAX_CSR,  0x000034aa }
 254 };
 255
 256 static const struct {
 257         uint8_t reg;
 258         uint8_t val;
 259 } rum_def_bbp[] = {
 260         {   3, 0x80 },
 261         {  15, 0x30 },
 262         {  17, 0x20 },
 263         {  21, 0xc8 },
 264         {  22, 0x38 },
 265         {  23, 0x06 },
 266         {  24, 0xfe },
 267         {  25, 0x0a },
 268         {  26, 0x0d },
 269         {  32, 0x0b },
 270         {  34, 0x12 },
 271         {  37, 0x07 },
 272         {  39, 0xf8 },
 273         {  41, 0x60 },
 274         {  53, 0x10 },
 275         {  54, 0x18 },
 276         {  60, 0x10 },
 277         {  61, 0x04 },
 278         {  62, 0x04 },
 279         {  75, 0xfe },
 280         {  86, 0xfe },
 281         {  88, 0xfe },
 282         {  90, 0x0f },
 283         {  99, 0x00 },
 284         { 102, 0x16 },
 285         { 107, 0x04 }
 286 };
 287
 288 static const struct rfprog {
 289         uint8_t         chan;
 290         uint32_t        r1, r2, r3, r4;
 291 }  rum_rf5226[] = {
 292         {   1, 0x00b03, 0x001e1, 0x1a014, 0x30282 },
 293         {   2, 0x00b03, 0x001e1, 0x1a014, 0x30287 },
 294         {   3, 0x00b03, 0x001e2, 0x1a014, 0x30282 },
 295         {   4, 0x00b03, 0x001e2, 0x1a014, 0x30287 },
 296         {   5, 0x00b03, 0x001e3, 0x1a014, 0x30282 },
 297         {   6, 0x00b03, 0x001e3, 0x1a014, 0x30287 },
 298         {   7, 0x00b03, 0x001e4, 0x1a014, 0x30282 },
 299         {   8, 0x00b03, 0x001e4, 0x1a014, 0x30287 },
 300         {   9, 0x00b03, 0x001e5, 0x1a014, 0x30282 },
 301         {  10, 0x00b03, 0x001e5, 0x1a014, 0x30287 },
 302         {  11, 0x00b03, 0x001e6, 0x1a014, 0x30282 },
 303         {  12, 0x00b03, 0x001e6, 0x1a014, 0x30287 },
 304         {  13, 0x00b03, 0x001e7, 0x1a014, 0x30282 },
 305         {  14, 0x00b03, 0x001e8, 0x1a014, 0x30284 },
 306
 307         {  34, 0x00b03, 0x20266, 0x36014, 0x30282 },
 308         {  38, 0x00b03, 0x20267, 0x36014, 0x30284 },
 309         {  42, 0x00b03, 0x20268, 0x36014, 0x30286 },
 310         {  46, 0x00b03, 0x20269, 0x36014, 0x30288 },
 311
 312         {  36, 0x00b03, 0x00266, 0x26014, 0x30288 },
 313         {  40, 0x00b03, 0x00268, 0x26014, 0x30280 },
 314         {  44, 0x00b03, 0x00269, 0x26014, 0x30282 },
 315         {  48, 0x00b03, 0x0026a, 0x26014, 0x30284 },
 316         {  52, 0x00b03, 0x0026b, 0x26014, 0x30286 },
 317         {  56, 0x00b03, 0x0026c, 0x26014, 0x30288 },
 318         {  60, 0x00b03, 0x0026e, 0x26014, 0x30280 },
 319         {  64, 0x00b03, 0x0026f, 0x26014, 0x30282 },
 320
 321         { 100, 0x00b03, 0x0028a, 0x2e014, 0x30280 },
 322         { 104, 0x00b03, 0x0028b, 0x2e014, 0x30282 },
 323         { 108, 0x00b03, 0x0028c, 0x2e014, 0x30284 },
 324         { 112, 0x00b03, 0x0028d, 0x2e014, 0x30286 },
 325         { 116, 0x00b03, 0x0028e, 0x2e014, 0x30288 },
 326         { 120, 0x00b03, 0x002a0, 0x2e014, 0x30280 },
 327         { 124, 0x00b03, 0x002a1, 0x2e014, 0x30282 },
 328         { 128, 0x00b03, 0x002a2, 0x2e014, 0x30284 },
 329         { 132, 0x00b03, 0x002a3, 0x2e014, 0x30286 },
 330         { 136, 0x00b03, 0x002a4, 0x2e014, 0x30288 },
 331         { 140, 0x00b03, 0x002a6, 0x2e014, 0x30280 },
 332
 333         { 149, 0x00b03, 0x002a8, 0x2e014, 0x30287 },
 334         { 153, 0x00b03, 0x002a9, 0x2e014, 0x30289 },
 335         { 157, 0x00b03, 0x002ab, 0x2e014, 0x30281 },
 336         { 161, 0x00b03, 0x002ac, 0x2e014, 0x30283 },
 337         { 165, 0x00b03, 0x002ad, 0x2e014, 0x30285 }
 338 }, rum_rf5225[] = {
 339         {   1, 0x00b33, 0x011e1, 0x1a014, 0x30282 },
 340         {   2, 0x00b33, 0x011e1, 0x1a014, 0x30287 },
 341         {   3, 0x00b33, 0x011e2, 0x1a014, 0x30282 },
 342         {   4, 0x00b33, 0x011e2, 0x1a014, 0x30287 },
 343         {   5, 0x00b33, 0x011e3, 0x1a014, 0x30282 },
 344         {   6, 0x00b33, 0x011e3, 0x1a014, 0x30287 },
 345         {   7, 0x00b33, 0x011e4, 0x1a014, 0x30282 },
 346         {   8, 0x00b33, 0x011e4, 0x1a014, 0x30287 },
 347         {   9, 0x00b33, 0x011e5, 0x1a014, 0x30282 },
 348         {  10, 0x00b33, 0x011e5, 0x1a014, 0x30287 },
 349         {  11, 0x00b33, 0x011e6, 0x1a014, 0x30282 },
 350         {  12, 0x00b33, 0x011e6, 0x1a014, 0x30287 },
 351         {  13, 0x00b33, 0x011e7, 0x1a014, 0x30282 },
 352         {  14, 0x00b33, 0x011e8, 0x1a014, 0x30284 },
 353
 354         {  34, 0x00b33, 0x01266, 0x26014, 0x30282 },
 355         {  38, 0x00b33, 0x01267, 0x26014, 0x30284 },
 356         {  42, 0x00b33, 0x01268, 0x26014, 0x30286 },
 357         {  46, 0x00b33, 0x01269, 0x26014, 0x30288 },
 358
 359         {  36, 0x00b33, 0x01266, 0x26014, 0x30288 },
 360         {  40, 0x00b33, 0x01268, 0x26014, 0x30280 },
 361         {  44, 0x00b33, 0x01269, 0x26014, 0x30282 },
 362         {  48, 0x00b33, 0x0126a, 0x26014, 0x30284 },
 363         {  52, 0x00b33, 0x0126b, 0x26014, 0x30286 },
 364         {  56, 0x00b33, 0x0126c, 0x26014, 0x30288 },
 365         {  60, 0x00b33, 0x0126e, 0x26014, 0x30280 },
 366         {  64, 0x00b33, 0x0126f, 0x26014, 0x30282 },
 367
 368         { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 },
 369         { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 },
 370         { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 },
 371         { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 },
 372         { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 },
 373         { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 },
 374         { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 },
 375         { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 },
 376         { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 },
 377         { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 },
 378         { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 },
 379
 380         { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 },
 381         { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 },
 382         { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 },
 383         { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 },
 384         { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 }
 385 };
 386
 387 static const struct usb_config rum_config[RUM_N_TRANSFER] = {
 388         [RUM_BULK_WR] = {
 389                 .type = UE_BULK,
 390                 .endpoint = UE_ADDR_ANY,
 391                 .direction = UE_DIR_OUT,
 392                 .bufsize = (MCLBYTES + RT2573_TX_DESC_SIZE + 8),
 393                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 394                 .callback = rum_bulk_write_callback,
 395                 .timeout = 5000,        /* ms */
 396         },
 397         [RUM_BULK_RD] = {
 398                 .type = UE_BULK,
 399                 .endpoint = UE_ADDR_ANY,
 400                 .direction = UE_DIR_IN,
 401                 .bufsize = (MCLBYTES + RT2573_RX_DESC_SIZE),
 402                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 403                 .callback = rum_bulk_read_callback,
 404         },
 405 };
 406
 407 static int
 408 rum_match(device_t self)
 409 {
 410         struct usb_attach_arg *uaa = device_get_ivars(self);
 411
 412         if (uaa->usb_mode != USB_MODE_HOST)
 413                 return (ENXIO);
 414         if (uaa->info.bConfigIndex != 0)
 415                 return (ENXIO);
 416         if (uaa->info.bIfaceIndex != RT2573_IFACE_INDEX)
 417                 return (ENXIO);
 418
 419         return (usbd_lookup_id_by_uaa(rum_devs, sizeof(rum_devs), uaa));
 420 }
 421
 422 static int
 423 rum_attach(device_t self)
 424 {
 425         struct usb_attach_arg *uaa = device_get_ivars(self);
 426         struct rum_softc *sc = device_get_softc(self);
 427         struct ieee80211com *ic;
 428         struct ifnet *ifp;
 429         uint8_t iface_index, bands;
 430         uint32_t tmp;
 431         int error, ntries;
 432
 433         device_set_usb_desc(self);
 434         sc->sc_udev = uaa->device;
 435         sc->sc_dev = self;
 436
 437         mtx_init(&sc->sc_mtx, device_get_nameunit(self),
 438             MTX_NETWORK_LOCK, MTX_DEF);
 439
 440         iface_index = RT2573_IFACE_INDEX;
 441         error = usbd_transfer_setup(uaa->device, &iface_index,
 442             sc->sc_xfer, rum_config, RUM_N_TRANSFER, sc, &sc->sc_mtx);
 443         if (error) {
 444                 device_printf(self, "could not allocate USB transfers, "
 445                     "err=%s\n", usbd_errstr(error));
 446                 goto detach;
 447         }
 448
 449         RUM_LOCK(sc);
 450         /* retrieve RT2573 rev. no */
 451         for (ntries = 0; ntries < 100; ntries++) {
 452                 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0)
 453                         break;
 454                 if (rum_pause(sc, hz / 100))
 455                         break;
 456         }
 457         if (ntries == 100) {
 458                 device_printf(sc->sc_dev, "timeout waiting for chip to settle\n");
 459                 RUM_UNLOCK(sc);
 460                 goto detach;
 461         }
 462
 463         /* retrieve MAC address and various other things from EEPROM */
 464         rum_read_eeprom(sc);
 465
 466         device_printf(sc->sc_dev, "MAC/BBP RT2573 (rev 0x%05x), RF %s\n",
 467             tmp, rum_get_rf(sc->rf_rev));
 468
 469         rum_load_microcode(sc, rt2573_ucode, sizeof(rt2573_ucode));
 470         RUM_UNLOCK(sc);
 471
 472         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 473         if (ifp == NULL) {
 474                 device_printf(sc->sc_dev, "can not if_alloc()\n");
 475                 goto detach;
 476         }
 477         ic = ifp->if_l2com;
 478
 479         ifp->if_softc = sc;
 480         if_initname(ifp, "rum", device_get_unit(sc->sc_dev));
 481         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 482         ifp->if_init = rum_init;
 483         ifp->if_ioctl = rum_ioctl;
 484         ifp->if_start = rum_start;
 485         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 486         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 487         IFQ_SET_READY(&ifp->if_snd);
 488
 489         ic->ic_ifp = ifp;
 490         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 491
 492         /* set device capabilities */
 493         ic->ic_caps =
 494               IEEE80211_C_STA           /* station mode supported */
 495             | IEEE80211_C_IBSS          /* IBSS mode supported */
 496             | IEEE80211_C_MONITOR       /* monitor mode supported */
 497             | IEEE80211_C_HOSTAP        /* HostAp mode supported */
 498             | IEEE80211_C_TXPMGT        /* tx power management */
 499             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 500             | IEEE80211_C_SHSLOT        /* short slot time supported */
 501             | IEEE80211_C_BGSCAN        /* bg scanning supported */
 502             | IEEE80211_C_WPA           /* 802.11i */
 503             ;
 504
 505         bands = 0;
 506         setbit(&bands, IEEE80211_MODE_11B);
 507         setbit(&bands, IEEE80211_MODE_11G);
 508         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226)
 509                 setbit(&bands, IEEE80211_MODE_11A);
 510         ieee80211_init_channels(ic, NULL, &bands);
 511
 512         ieee80211_ifattach(ic, sc->sc_bssid);
 513         ic->ic_update_promisc = rum_update_promisc;
 514         ic->ic_raw_xmit = rum_raw_xmit;
 515         ic->ic_scan_start = rum_scan_start;
 516         ic->ic_scan_end = rum_scan_end;
 517         ic->ic_set_channel = rum_set_channel;
 518
 519         ic->ic_vap_create = rum_vap_create;
 520         ic->ic_vap_delete = rum_vap_delete;
 521         ic->ic_update_mcast = rum_update_mcast;
 522
 523         ieee80211_radiotap_attach(ic,
 524             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 525                 RT2573_TX_RADIOTAP_PRESENT,
 526             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 527                 RT2573_RX_RADIOTAP_PRESENT);
 528
 529         if (bootverbose)
 530                 ieee80211_announce(ic);
 531
 532         return (0);
 533
 534 detach:
 535         rum_detach(self);
 536         return (ENXIO);                 /* failure */
 537 }
 538
 539 static int
 540 rum_detach(device_t self)
 541 {
 542         struct rum_softc *sc = device_get_softc(self);
 543         struct ifnet *ifp = sc->sc_ifp;
 544         struct ieee80211com *ic;
 545
 546         /* stop all USB transfers */
 547         usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
 548
 549         /* free TX list, if any */
 550         RUM_LOCK(sc);
 551         rum_unsetup_tx_list(sc);
 552         RUM_UNLOCK(sc);
 553
 554         if (ifp) {
 555                 ic = ifp->if_l2com;
 556                 ieee80211_ifdetach(ic);
 557                 if_free(ifp);
 558         }
 559         mtx_destroy(&sc->sc_mtx);
 560
 561         return (0);
 562 }
 563
 564 static usb_error_t
 565 rum_do_request(struct rum_softc *sc,
 566     struct usb_device_request *req, void *data)
 567 {
 568         usb_error_t err;
 569         int ntries = 10;
 570
 571         while (ntries--) {
 572                 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx,
 573                     req, data, 0, NULL, 250 /* ms */);
 574                 if (err == 0)
 575                         break;
 576
 577                 DPRINTFN(1, "Control request failed, %s (retrying)\n",
 578                     usbd_errstr(err));
 579                 if (rum_pause(sc, hz / 100))
 580                         break;
 581         }
 582         return (err);
 583 }
 584
 585 static struct ieee80211vap *
 586 rum_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 587     enum ieee80211_opmode opmode, int flags,
 588     const uint8_t bssid[IEEE80211_ADDR_LEN],
 589     const uint8_t mac[IEEE80211_ADDR_LEN])
 590 {
 591         struct rum_softc *sc = ic->ic_ifp->if_softc;
 592         struct rum_vap *rvp;
 593         struct ieee80211vap *vap;
 594
 595         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 596                 return NULL;
 597         rvp = (struct rum_vap *) malloc(sizeof(struct rum_vap),
 598             M_80211_VAP, M_NOWAIT | M_ZERO);
 599         if (rvp == NULL)
 600                 return NULL;
 601         vap = &rvp->vap;
 602         /* enable s/w bmiss handling for sta mode */
 603         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 604             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 605
 606         /* override state transition machine */
 607         rvp->newstate = vap->iv_newstate;
 608         vap->iv_newstate = rum_newstate;
 609
 610         usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_mtx, 0);
 611         TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
 612         ieee80211_ratectl_init(vap);
 613         ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
 614         /* complete setup */
 615         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 616         ic->ic_opmode = opmode;
 617         return vap;
 618 }
 619
 620 static void
 621 rum_vap_delete(struct ieee80211vap *vap)
 622 {
 623         struct rum_vap *rvp = RUM_VAP(vap);
 624         struct ieee80211com *ic = vap->iv_ic;
 625
 626         usb_callout_drain(&rvp->ratectl_ch);
 627         ieee80211_draintask(ic, &rvp->ratectl_task);
 628         ieee80211_ratectl_deinit(vap);
 629         ieee80211_vap_detach(vap);
 630         free(rvp, M_80211_VAP);
 631 }
 632
 633 static void
 634 rum_tx_free(struct rum_tx_data *data, int txerr)
 635 {
 636         struct rum_softc *sc = data->sc;
 637
 638         if (data->m != NULL) {
 639                 if (data->m->m_flags & M_TXCB)
 640                         ieee80211_process_callback(data->ni, data->m,
 641                             txerr ? ETIMEDOUT : 0);
 642                 m_freem(data->m);
 643                 data->m = NULL;
 644
 645                 ieee80211_free_node(data->ni);
 646                 data->ni = NULL;
 647         }
 648         STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 649         sc->tx_nfree++;
 650 }
 651
 652 static void
 653 rum_setup_tx_list(struct rum_softc *sc)
 654 {
 655         struct rum_tx_data *data;
 656         int i;
 657
 658         sc->tx_nfree = 0;
 659         STAILQ_INIT(&sc->tx_q);
 660         STAILQ_INIT(&sc->tx_free);
 661
 662         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 663                 data = &sc->tx_data[i];
 664
 665                 data->sc = sc;
 666                 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 667                 sc->tx_nfree++;
 668         }
 669 }
 670
 671 static void
 672 rum_unsetup_tx_list(struct rum_softc *sc)
 673 {
 674         struct rum_tx_data *data;
 675         int i;
 676
 677         /* make sure any subsequent use of the queues will fail */
 678         sc->tx_nfree = 0;
 679         STAILQ_INIT(&sc->tx_q);
 680         STAILQ_INIT(&sc->tx_free);
 681
 682         /* free up all node references and mbufs */
 683         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 684                 data = &sc->tx_data[i];
 685
 686                 if (data->m != NULL) {
 687                         m_freem(data->m);
 688                         data->m = NULL;
 689                 }
 690                 if (data->ni != NULL) {
 691                         ieee80211_free_node(data->ni);
 692                         data->ni = NULL;
 693                 }
 694         }
 695 }
 696
 697 static int
 698 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 699 {
 700         struct rum_vap *rvp = RUM_VAP(vap);
 701         struct ieee80211com *ic = vap->iv_ic;
 702         struct rum_softc *sc = ic->ic_ifp->if_softc;
 703         const struct ieee80211_txparam *tp;
 704         enum ieee80211_state ostate;
 705         struct ieee80211_node *ni;
 706         uint32_t tmp;
 707
 708         ostate = vap->iv_state;
 709         DPRINTF("%s -> %s\n",
 710                 ieee80211_state_name[ostate],
 711                 ieee80211_state_name[nstate]);
 712
 713         IEEE80211_UNLOCK(ic);
 714         RUM_LOCK(sc);
 715         usb_callout_stop(&rvp->ratectl_ch);
 716
 717         switch (nstate) {
 718         case IEEE80211_S_INIT:
 719                 if (ostate == IEEE80211_S_RUN) {
 720                         /* abort TSF synchronization */
 721                         tmp = rum_read(sc, RT2573_TXRX_CSR9);
 722                         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
 723                 }
 724                 break;
 725
 726         case IEEE80211_S_RUN:
 727                 ni = ieee80211_ref_node(vap->iv_bss);
 728
 729                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
 730                         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) {
 731                                 RUM_UNLOCK(sc);
 732                                 IEEE80211_LOCK(ic);
 733                                 ieee80211_free_node(ni);
 734                                 return (-1);
 735                         }
 736                         rum_update_slot(ic->ic_ifp);
 737                         rum_enable_mrr(sc);
 738                         rum_set_txpreamble(sc);
 739                         rum_set_basicrates(sc);
 740                         IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
 741                         rum_set_bssid(sc, sc->sc_bssid);
 742                 }
 743
 744                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 745                     vap->iv_opmode == IEEE80211_M_IBSS)
 746                         rum_prepare_beacon(sc, vap);
 747
 748                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
 749                         rum_enable_tsf_sync(sc);
 750                 else
 751                         rum_enable_tsf(sc);
 752
 753                 /* enable automatic rate adaptation */
 754                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 755                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
 756                         rum_ratectl_start(sc, ni);
 757                 ieee80211_free_node(ni);
 758                 break;
 759         default:
 760                 break;
 761         }
 762         RUM_UNLOCK(sc);
 763         IEEE80211_LOCK(ic);
 764         return (rvp->newstate(vap, nstate, arg));
 765 }
 766
 767 static void
 768 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 769 {
 770         struct rum_softc *sc = usbd_xfer_softc(xfer);
 771         struct ifnet *ifp = sc->sc_ifp;
 772         struct ieee80211vap *vap;
 773         struct rum_tx_data *data;
 774         struct mbuf *m;
 775         struct usb_page_cache *pc;
 776         unsigned int len;
 777         int actlen, sumlen;
 778
 779         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 780
 781         switch (USB_GET_STATE(xfer)) {
 782         case USB_ST_TRANSFERRED:
 783                 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
 784
 785                 /* free resources */
 786                 data = usbd_xfer_get_priv(xfer);
 787                 rum_tx_free(data, 0);
 788                 usbd_xfer_set_priv(xfer, NULL);
 789
 790                 ifp->if_opackets++;
 791                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 792
 793                 /* FALLTHROUGH */
 794         case USB_ST_SETUP:
 795 tr_setup:
 796                 data = STAILQ_FIRST(&sc->tx_q);
 797                 if (data) {
 798                         STAILQ_REMOVE_HEAD(&sc->tx_q, next);
 799                         m = data->m;
 800
 801                         if (m->m_pkthdr.len > (int)(MCLBYTES + RT2573_TX_DESC_SIZE)) {
 802                                 DPRINTFN(0, "data overflow, %u bytes\n",
 803                                     m->m_pkthdr.len);
 804                                 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
 805                         }
 806                         pc = usbd_xfer_get_frame(xfer, 0);
 807                         usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
 808                         usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
 809                             m->m_pkthdr.len);
 810
 811                         vap = data->ni->ni_vap;
 812                         if (ieee80211_radiotap_active_vap(vap)) {
 813                                 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
 814
 815                                 tap->wt_flags = 0;
 816                                 tap->wt_rate = data->rate;
 817                                 tap->wt_antenna = sc->tx_ant;
 818
 819                                 ieee80211_radiotap_tx(vap, m);
 820                         }
 821
 822                         /* align end on a 4-bytes boundary */
 823                         len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
 824                         if ((len % 64) == 0)
 825                                 len += 4;
 826
 827                         DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
 828                             m->m_pkthdr.len, len);
 829
 830                         usbd_xfer_set_frame_len(xfer, 0, len);
 831                         usbd_xfer_set_priv(xfer, data);
 832
 833                         usbd_transfer_submit(xfer);
 834                 }
 835                 RUM_UNLOCK(sc);
 836                 rum_start(ifp);
 837                 RUM_LOCK(sc);
 838                 break;
 839
 840         default:                        /* Error */
 841                 DPRINTFN(11, "transfer error, %s\n",
 842                     usbd_errstr(error));
 843
 844                 ifp->if_oerrors++;
 845                 data = usbd_xfer_get_priv(xfer);
 846                 if (data != NULL) {
 847                         rum_tx_free(data, error);
 848                         usbd_xfer_set_priv(xfer, NULL);
 849                 }
 850
 851                 if (error != USB_ERR_CANCELLED) {
 852                         if (error == USB_ERR_TIMEOUT)
 853                                 device_printf(sc->sc_dev, "device timeout\n");
 854
 855                         /*
 856                          * Try to clear stall first, also if other
 857                          * errors occur, hence clearing stall
 858                          * introduces a 50 ms delay:
 859                          */
 860                         usbd_xfer_set_stall(xfer);
 861                         goto tr_setup;
 862                 }
 863                 break;
 864         }
 865 }
 866
 867 static void
 868 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 869 {
 870         struct rum_softc *sc = usbd_xfer_softc(xfer);
 871         struct ifnet *ifp = sc->sc_ifp;
 872         struct ieee80211com *ic = ifp->if_l2com;
 873         struct ieee80211_node *ni;
 874         struct mbuf *m = NULL;
 875         struct usb_page_cache *pc;
 876         uint32_t flags;
 877         uint8_t rssi = 0;
 878         int len;
 879
 880         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 881
 882         switch (USB_GET_STATE(xfer)) {
 883         case USB_ST_TRANSFERRED:
 884
 885                 DPRINTFN(15, "rx done, actlen=%d\n", len);
 886
 887                 if (len < (int)(RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN)) {
 888                         DPRINTF("%s: xfer too short %d\n",
 889                             device_get_nameunit(sc->sc_dev), len);
 890                         ifp->if_ierrors++;
 891                         goto tr_setup;
 892                 }
 893
 894                 len -= RT2573_RX_DESC_SIZE;
 895                 pc = usbd_xfer_get_frame(xfer, 0);
 896                 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
 897
 898                 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
 899                 flags = le32toh(sc->sc_rx_desc.flags);
 900                 if (flags & RT2573_RX_CRC_ERROR) {
 901                         /*
 902                          * This should not happen since we did not
 903                          * request to receive those frames when we
 904                          * filled RUM_TXRX_CSR2:
 905                          */
 906                         DPRINTFN(5, "PHY or CRC error\n");
 907                         ifp->if_ierrors++;
 908                         goto tr_setup;
 909                 }
 910
 911                 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 912                 if (m == NULL) {
 913                         DPRINTF("could not allocate mbuf\n");
 914                         ifp->if_ierrors++;
 915                         goto tr_setup;
 916                 }
 917                 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
 918                     mtod(m, uint8_t *), len);
 919
 920                 /* finalize mbuf */
 921                 m->m_pkthdr.rcvif = ifp;
 922                 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
 923
 924                 if (ieee80211_radiotap_active(ic)) {
 925                         struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
 926
 927                         /* XXX read tsf */
 928                         tap->wr_flags = 0;
 929                         tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
 930                             (flags & RT2573_RX_OFDM) ?
 931                             IEEE80211_T_OFDM : IEEE80211_T_CCK);
 932                         tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
 933                         tap->wr_antnoise = RT2573_NOISE_FLOOR;
 934                         tap->wr_antenna = sc->rx_ant;
 935                 }
 936                 /* FALLTHROUGH */
 937         case USB_ST_SETUP:
 938 tr_setup:
 939                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 940                 usbd_transfer_submit(xfer);
 941
 942                 /*
 943                  * At the end of a USB callback it is always safe to unlock
 944                  * the private mutex of a device! That is why we do the
 945                  * "ieee80211_input" here, and not some lines up!
 946                  */
 947                 RUM_UNLOCK(sc);
 948                 if (m) {
 949                         ni = ieee80211_find_rxnode(ic,
 950                             mtod(m, struct ieee80211_frame_min *));
 951                         if (ni != NULL) {
 952                                 (void) ieee80211_input(ni, m, rssi,
 953                                     RT2573_NOISE_FLOOR);
 954                                 ieee80211_free_node(ni);
 955                         } else
 956                                 (void) ieee80211_input_all(ic, m, rssi,
 957                                     RT2573_NOISE_FLOOR);
 958                 }
 959                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
 960                     !IFQ_IS_EMPTY(&ifp->if_snd))
 961                         rum_start(ifp);
 962                 RUM_LOCK(sc);
 963                 return;
 964
 965         default:                        /* Error */
 966                 if (error != USB_ERR_CANCELLED) {
 967                         /* try to clear stall first */
 968                         usbd_xfer_set_stall(xfer);
 969                         goto tr_setup;
 970                 }
 971                 return;
 972         }
 973 }
 974
 975 static uint8_t
 976 rum_plcp_signal(int rate)
 977 {
 978         switch (rate) {
 979         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
 980         case 12:        return 0xb;
 981         case 18:        return 0xf;
 982         case 24:        return 0xa;
 983         case 36:        return 0xe;
 984         case 48:        return 0x9;
 985         case 72:        return 0xd;
 986         case 96:        return 0x8;
 987         case 108:       return 0xc;
 988
 989         /* CCK rates (NB: not IEEE std, device-specific) */
 990         case 2:         return 0x0;
 991         case 4:         return 0x1;
 992         case 11:        return 0x2;
 993         case 22:        return 0x3;
 994         }
 995         return 0xff;            /* XXX unsupported/unknown rate */
 996 }
 997
 998 static void
 999 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
1000     uint32_t flags, uint16_t xflags, int len, int rate)
1001 {
1002         struct ifnet *ifp = sc->sc_ifp;
1003         struct ieee80211com *ic = ifp->if_l2com;
1004         uint16_t plcp_length;
1005         int remainder;
1006
1007         desc->flags = htole32(flags);
1008         desc->flags |= htole32(RT2573_TX_VALID);
1009         desc->flags |= htole32(len << 16);
1010
1011         desc->xflags = htole16(xflags);
1012
1013         desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) |
1014             RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10));
1015
1016         /* setup PLCP fields */
1017         desc->plcp_signal  = rum_plcp_signal(rate);
1018         desc->plcp_service = 4;
1019
1020         len += IEEE80211_CRC_LEN;
1021         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1022                 desc->flags |= htole32(RT2573_TX_OFDM);
1023
1024                 plcp_length = len & 0xfff;
1025                 desc->plcp_length_hi = plcp_length >> 6;
1026                 desc->plcp_length_lo = plcp_length & 0x3f;
1027         } else {
1028                 plcp_length = (16 * len + rate - 1) / rate;
1029                 if (rate == 22) {
1030                         remainder = (16 * len) % 22;
1031                         if (remainder != 0 && remainder < 7)
1032                                 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1033                 }
1034                 desc->plcp_length_hi = plcp_length >> 8;
1035                 desc->plcp_length_lo = plcp_length & 0xff;
1036
1037                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1038                         desc->plcp_signal |= 0x08;
1039         }
1040 }
1041
1042 static int
1043 rum_sendprot(struct rum_softc *sc,
1044     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1045 {
1046         struct ieee80211com *ic = ni->ni_ic;
1047         const struct ieee80211_frame *wh;
1048         struct rum_tx_data *data;
1049         struct mbuf *mprot;
1050         int protrate, ackrate, pktlen, flags, isshort;
1051         uint16_t dur;
1052
1053         RUM_LOCK_ASSERT(sc, MA_OWNED);
1054         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1055             ("protection %d", prot));
1056
1057         wh = mtod(m, const struct ieee80211_frame *);
1058         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1059
1060         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1061         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1062
1063         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1064         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1065             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1066         flags = RT2573_TX_MORE_FRAG;
1067         if (prot == IEEE80211_PROT_RTSCTS) {
1068                 /* NB: CTS is the same size as an ACK */
1069                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1070                 flags |= RT2573_TX_NEED_ACK;
1071                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1072         } else {
1073                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1074         }
1075         if (mprot == NULL) {
1076                 /* XXX stat + msg */
1077                 return (ENOBUFS);
1078         }
1079         data = STAILQ_FIRST(&sc->tx_free);
1080         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1081         sc->tx_nfree--;
1082
1083         data->m = mprot;
1084         data->ni = ieee80211_ref_node(ni);
1085         data->rate = protrate;
1086         rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate);
1087
1088         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1089         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1090
1091         return 0;
1092 }
1093
1094 static int
1095 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1096 {
1097         struct ieee80211vap *vap = ni->ni_vap;
1098         struct ifnet *ifp = sc->sc_ifp;
1099         struct ieee80211com *ic = ifp->if_l2com;
1100         struct rum_tx_data *data;
1101         struct ieee80211_frame *wh;
1102         const struct ieee80211_txparam *tp;
1103         struct ieee80211_key *k;
1104         uint32_t flags = 0;
1105         uint16_t dur;
1106
1107         RUM_LOCK_ASSERT(sc, MA_OWNED);
1108
1109         data = STAILQ_FIRST(&sc->tx_free);
1110         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1111         sc->tx_nfree--;
1112
1113         wh = mtod(m0, struct ieee80211_frame *);
1114         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1115                 k = ieee80211_crypto_encap(ni, m0);
1116                 if (k == NULL) {
1117                         m_freem(m0);
1118                         return ENOBUFS;
1119                 }
1120                 wh = mtod(m0, struct ieee80211_frame *);
1121         }
1122
1123         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1124
1125         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1126                 flags |= RT2573_TX_NEED_ACK;
1127
1128                 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1129                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1130                 *(uint16_t *)wh->i_dur = htole16(dur);
1131
1132                 /* tell hardware to add timestamp for probe responses */
1133                 if ((wh->i_fc[0] &
1134                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1135                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1136                         flags |= RT2573_TX_TIMESTAMP;
1137         }
1138
1139         data->m = m0;
1140         data->ni = ni;
1141         data->rate = tp->mgmtrate;
1142
1143         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate);
1144
1145         DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1146             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1147
1148         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1149         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1150
1151         return (0);
1152 }
1153
1154 static int
1155 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1156     const struct ieee80211_bpf_params *params)
1157 {
1158         struct ieee80211com *ic = ni->ni_ic;
1159         struct rum_tx_data *data;
1160         uint32_t flags;
1161         int rate, error;
1162
1163         RUM_LOCK_ASSERT(sc, MA_OWNED);
1164         KASSERT(params != NULL, ("no raw xmit params"));
1165
1166         rate = params->ibp_rate0;
1167         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1168                 m_freem(m0);
1169                 return EINVAL;
1170         }
1171         flags = 0;
1172         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1173                 flags |= RT2573_TX_NEED_ACK;
1174         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1175                 error = rum_sendprot(sc, m0, ni,
1176                     params->ibp_flags & IEEE80211_BPF_RTS ?
1177                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1178                     rate);
1179                 if (error || sc->tx_nfree == 0) {
1180                         m_freem(m0);
1181                         return ENOBUFS;
1182                 }
1183                 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1184         }
1185
1186         data = STAILQ_FIRST(&sc->tx_free);
1187         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1188         sc->tx_nfree--;
1189
1190         data->m = m0;
1191         data->ni = ni;
1192         data->rate = rate;
1193
1194         /* XXX need to setup descriptor ourself */
1195         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1196
1197         DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1198             m0->m_pkthdr.len, rate);
1199
1200         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1201         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1202
1203         return 0;
1204 }
1205
1206 static int
1207 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1208 {
1209         struct ieee80211vap *vap = ni->ni_vap;
1210         struct ifnet *ifp = sc->sc_ifp;
1211         struct ieee80211com *ic = ifp->if_l2com;
1212         struct rum_tx_data *data;
1213         struct ieee80211_frame *wh;
1214         const struct ieee80211_txparam *tp;
1215         struct ieee80211_key *k;
1216         uint32_t flags = 0;
1217         uint16_t dur;
1218         int error, rate;
1219
1220         RUM_LOCK_ASSERT(sc, MA_OWNED);
1221
1222         wh = mtod(m0, struct ieee80211_frame *);
1223
1224         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1225         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1226                 rate = tp->mcastrate;
1227         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1228                 rate = tp->ucastrate;
1229         else
1230                 rate = ni->ni_txrate;
1231
1232         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1233                 k = ieee80211_crypto_encap(ni, m0);
1234                 if (k == NULL) {
1235                         m_freem(m0);
1236                         return ENOBUFS;
1237                 }
1238
1239                 /* packet header may have moved, reset our local pointer */
1240                 wh = mtod(m0, struct ieee80211_frame *);
1241         }
1242
1243         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1244                 int prot = IEEE80211_PROT_NONE;
1245                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1246                         prot = IEEE80211_PROT_RTSCTS;
1247                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1248                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1249                         prot = ic->ic_protmode;
1250                 if (prot != IEEE80211_PROT_NONE) {
1251                         error = rum_sendprot(sc, m0, ni, prot, rate);
1252                         if (error || sc->tx_nfree == 0) {
1253                                 m_freem(m0);
1254                                 return ENOBUFS;
1255                         }
1256                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1257                 }
1258         }
1259
1260         data = STAILQ_FIRST(&sc->tx_free);
1261         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1262         sc->tx_nfree--;
1263
1264         data->m = m0;
1265         data->ni = ni;
1266         data->rate = rate;
1267
1268         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1269                 flags |= RT2573_TX_NEED_ACK;
1270                 flags |= RT2573_TX_MORE_FRAG;
1271
1272                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1273                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1274                 *(uint16_t *)wh->i_dur = htole16(dur);
1275         }
1276
1277         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1278
1279         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1280             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1281
1282         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1283         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1284
1285         return 0;
1286 }
1287
1288 static void
1289 rum_start(struct ifnet *ifp)
1290 {
1291         struct rum_softc *sc = ifp->if_softc;
1292         struct ieee80211_node *ni;
1293         struct mbuf *m;
1294
1295         RUM_LOCK(sc);
1296         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1297                 RUM_UNLOCK(sc);
1298                 return;
1299         }
1300         for (;;) {
1301                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1302                 if (m == NULL)
1303                         break;
1304                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1305                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1306                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1307                         break;
1308                 }
1309                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1310                 if (rum_tx_data(sc, m, ni) != 0) {
1311                         ieee80211_free_node(ni);
1312                         ifp->if_oerrors++;
1313                         break;
1314                 }
1315         }
1316         RUM_UNLOCK(sc);
1317 }
1318
1319 static int
1320 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1321 {
1322         struct rum_softc *sc = ifp->if_softc;
1323         struct ieee80211com *ic = ifp->if_l2com;
1324         struct ifreq *ifr = (struct ifreq *) data;
1325         int error = 0, startall = 0;
1326
1327         switch (cmd) {
1328         case SIOCSIFFLAGS:
1329                 RUM_LOCK(sc);
1330                 if (ifp->if_flags & IFF_UP) {
1331                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1332                                 rum_init_locked(sc);
1333                                 startall = 1;
1334                         } else
1335                                 rum_setpromisc(sc);
1336                 } else {
1337                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1338                                 rum_stop(sc);
1339                 }
1340                 RUM_UNLOCK(sc);
1341                 if (startall)
1342                         ieee80211_start_all(ic);
1343                 break;
1344         case SIOCGIFMEDIA:
1345                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1346                 break;
1347         case SIOCGIFADDR:
1348                 error = ether_ioctl(ifp, cmd, data);
1349                 break;
1350         default:
1351                 error = EINVAL;
1352                 break;
1353         }
1354         return error;
1355 }
1356
1357 static void
1358 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1359 {
1360         struct usb_device_request req;
1361         usb_error_t error;
1362
1363         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1364         req.bRequest = RT2573_READ_EEPROM;
1365         USETW(req.wValue, 0);
1366         USETW(req.wIndex, addr);
1367         USETW(req.wLength, len);
1368
1369         error = rum_do_request(sc, &req, buf);
1370         if (error != 0) {
1371                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1372                     usbd_errstr(error));
1373         }
1374 }
1375
1376 static uint32_t
1377 rum_read(struct rum_softc *sc, uint16_t reg)
1378 {
1379         uint32_t val;
1380
1381         rum_read_multi(sc, reg, &val, sizeof val);
1382
1383         return le32toh(val);
1384 }
1385
1386 static void
1387 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1388 {
1389         struct usb_device_request req;
1390         usb_error_t error;
1391
1392         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1393         req.bRequest = RT2573_READ_MULTI_MAC;
1394         USETW(req.wValue, 0);
1395         USETW(req.wIndex, reg);
1396         USETW(req.wLength, len);
1397
1398         error = rum_do_request(sc, &req, buf);
1399         if (error != 0) {
1400                 device_printf(sc->sc_dev,
1401                     "could not multi read MAC register: %s\n",
1402                     usbd_errstr(error));
1403         }
1404 }
1405
1406 static usb_error_t
1407 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1408 {
1409         uint32_t tmp = htole32(val);
1410
1411         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1412 }
1413
1414 static usb_error_t
1415 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1416 {
1417         struct usb_device_request req;
1418         usb_error_t error;
1419         size_t offset;
1420
1421         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1422         req.bRequest = RT2573_WRITE_MULTI_MAC;
1423         USETW(req.wValue, 0);
1424
1425         /* write at most 64 bytes at a time */
1426         for (offset = 0; offset < len; offset += 64) {
1427                 USETW(req.wIndex, reg + offset);
1428                 USETW(req.wLength, MIN(len - offset, 64));
1429
1430                 error = rum_do_request(sc, &req, (char *)buf + offset);
1431                 if (error != 0) {
1432                         device_printf(sc->sc_dev,
1433                             "could not multi write MAC register: %s\n",
1434                             usbd_errstr(error));
1435                         return (error);
1436                 }
1437         }
1438
1439         return (USB_ERR_NORMAL_COMPLETION);
1440 }
1441
1442 static void
1443 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1444 {
1445         uint32_t tmp;
1446         int ntries;
1447
1448         DPRINTFN(2, "reg=0x%08x\n", reg);
1449
1450         for (ntries = 0; ntries < 100; ntries++) {
1451                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1452                         break;
1453                 if (rum_pause(sc, hz / 100))
1454                         break;
1455         }
1456         if (ntries == 100) {
1457                 device_printf(sc->sc_dev, "could not write to BBP\n");
1458                 return;
1459         }
1460
1461         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1462         rum_write(sc, RT2573_PHY_CSR3, tmp);
1463 }
1464
1465 static uint8_t
1466 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1467 {
1468         uint32_t val;
1469         int ntries;
1470
1471         DPRINTFN(2, "reg=0x%08x\n", reg);
1472
1473         for (ntries = 0; ntries < 100; ntries++) {
1474                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1475                         break;
1476                 if (rum_pause(sc, hz / 100))
1477                         break;
1478         }
1479         if (ntries == 100) {
1480                 device_printf(sc->sc_dev, "could not read BBP\n");
1481                 return 0;
1482         }
1483
1484         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1485         rum_write(sc, RT2573_PHY_CSR3, val);
1486
1487         for (ntries = 0; ntries < 100; ntries++) {
1488                 val = rum_read(sc, RT2573_PHY_CSR3);
1489                 if (!(val & RT2573_BBP_BUSY))
1490                         return val & 0xff;
1491                 if (rum_pause(sc, hz / 100))
1492                         break;
1493         }
1494
1495         device_printf(sc->sc_dev, "could not read BBP\n");
1496         return 0;
1497 }
1498
1499 static void
1500 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1501 {
1502         uint32_t tmp;
1503         int ntries;
1504
1505         for (ntries = 0; ntries < 100; ntries++) {
1506                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1507                         break;
1508                 if (rum_pause(sc, hz / 100))
1509                         break;
1510         }
1511         if (ntries == 100) {
1512                 device_printf(sc->sc_dev, "could not write to RF\n");
1513                 return;
1514         }
1515
1516         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1517             (reg & 3);
1518         rum_write(sc, RT2573_PHY_CSR4, tmp);
1519
1520         /* remember last written value in sc */
1521         sc->rf_regs[reg] = val;
1522
1523         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1524 }
1525
1526 static void
1527 rum_select_antenna(struct rum_softc *sc)
1528 {
1529         uint8_t bbp4, bbp77;
1530         uint32_t tmp;
1531
1532         bbp4  = rum_bbp_read(sc, 4);
1533         bbp77 = rum_bbp_read(sc, 77);
1534
1535         /* TBD */
1536
1537         /* make sure Rx is disabled before switching antenna */
1538         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1539         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1540
1541         rum_bbp_write(sc,  4, bbp4);
1542         rum_bbp_write(sc, 77, bbp77);
1543
1544         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1545 }
1546
1547 /*
1548  * Enable multi-rate retries for frames sent at OFDM rates.
1549  * In 802.11b/g mode, allow fallback to CCK rates.
1550  */
1551 static void
1552 rum_enable_mrr(struct rum_softc *sc)
1553 {
1554         struct ifnet *ifp = sc->sc_ifp;
1555         struct ieee80211com *ic = ifp->if_l2com;
1556         uint32_t tmp;
1557
1558         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1559
1560         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1561         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1562                 tmp |= RT2573_MRR_CCK_FALLBACK;
1563         tmp |= RT2573_MRR_ENABLED;
1564
1565         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1566 }
1567
1568 static void
1569 rum_set_txpreamble(struct rum_softc *sc)
1570 {
1571         struct ifnet *ifp = sc->sc_ifp;
1572         struct ieee80211com *ic = ifp->if_l2com;
1573         uint32_t tmp;
1574
1575         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1576
1577         tmp &= ~RT2573_SHORT_PREAMBLE;
1578         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1579                 tmp |= RT2573_SHORT_PREAMBLE;
1580
1581         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1582 }
1583
1584 static void
1585 rum_set_basicrates(struct rum_softc *sc)
1586 {
1587         struct ifnet *ifp = sc->sc_ifp;
1588         struct ieee80211com *ic = ifp->if_l2com;
1589
1590         /* update basic rate set */
1591         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1592                 /* 11b basic rates: 1, 2Mbps */
1593                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1594         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1595                 /* 11a basic rates: 6, 12, 24Mbps */
1596                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1597         } else {
1598                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1599                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1600         }
1601 }
1602
1603 /*
1604  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1605  * driver.
1606  */
1607 static void
1608 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1609 {
1610         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1611         uint32_t tmp;
1612
1613         /* update all BBP registers that depend on the band */
1614         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1615         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1616         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1617                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1618                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1619         }
1620         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1621             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1622                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1623         }
1624
1625         sc->bbp17 = bbp17;
1626         rum_bbp_write(sc,  17, bbp17);
1627         rum_bbp_write(sc,  96, bbp96);
1628         rum_bbp_write(sc, 104, bbp104);
1629
1630         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1631             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1632                 rum_bbp_write(sc, 75, 0x80);
1633                 rum_bbp_write(sc, 86, 0x80);
1634                 rum_bbp_write(sc, 88, 0x80);
1635         }
1636
1637         rum_bbp_write(sc, 35, bbp35);
1638         rum_bbp_write(sc, 97, bbp97);
1639         rum_bbp_write(sc, 98, bbp98);
1640
1641         tmp = rum_read(sc, RT2573_PHY_CSR0);
1642         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1643         if (IEEE80211_IS_CHAN_2GHZ(c))
1644                 tmp |= RT2573_PA_PE_2GHZ;
1645         else
1646                 tmp |= RT2573_PA_PE_5GHZ;
1647         rum_write(sc, RT2573_PHY_CSR0, tmp);
1648 }
1649
1650 static void
1651 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1652 {
1653         struct ifnet *ifp = sc->sc_ifp;
1654         struct ieee80211com *ic = ifp->if_l2com;
1655         const struct rfprog *rfprog;
1656         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1657         int8_t power;
1658         int i, chan;
1659
1660         chan = ieee80211_chan2ieee(ic, c);
1661         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1662                 return;
1663
1664         /* select the appropriate RF settings based on what EEPROM says */
1665         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1666                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1667
1668         /* find the settings for this channel (we know it exists) */
1669         for (i = 0; rfprog[i].chan != chan; i++);
1670
1671         power = sc->txpow[i];
1672         if (power < 0) {
1673                 bbp94 += power;
1674                 power = 0;
1675         } else if (power > 31) {
1676                 bbp94 += power - 31;
1677                 power = 31;
1678         }
1679
1680         /*
1681          * If we are switching from the 2GHz band to the 5GHz band or
1682          * vice-versa, BBP registers need to be reprogrammed.
1683          */
1684         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1685                 rum_select_band(sc, c);
1686                 rum_select_antenna(sc);
1687         }
1688         ic->ic_curchan = c;
1689
1690         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1691         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1692         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1693         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1694
1695         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1696         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1697         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1698         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1699
1700         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1701         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1702         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1703         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1704
1705         rum_pause(sc, hz / 100);
1706
1707         /* enable smart mode for MIMO-capable RFs */
1708         bbp3 = rum_bbp_read(sc, 3);
1709
1710         bbp3 &= ~RT2573_SMART_MODE;
1711         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1712                 bbp3 |= RT2573_SMART_MODE;
1713
1714         rum_bbp_write(sc, 3, bbp3);
1715
1716         if (bbp94 != RT2573_BBPR94_DEFAULT)
1717                 rum_bbp_write(sc, 94, bbp94);
1718
1719         /* give the chip some extra time to do the switchover */
1720         rum_pause(sc, hz / 100);
1721 }
1722
1723 /*
1724  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1725  * and HostAP operating modes.
1726  */
1727 static void
1728 rum_enable_tsf_sync(struct rum_softc *sc)
1729 {
1730         struct ifnet *ifp = sc->sc_ifp;
1731         struct ieee80211com *ic = ifp->if_l2com;
1732         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1733         uint32_t tmp;
1734
1735         if (vap->iv_opmode != IEEE80211_M_STA) {
1736                 /*
1737                  * Change default 16ms TBTT adjustment to 8ms.
1738                  * Must be done before enabling beacon generation.
1739                  */
1740                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1741         }
1742
1743         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1744
1745         /* set beacon interval (in 1/16ms unit) */
1746         tmp |= vap->iv_bss->ni_intval * 16;
1747
1748         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1749         if (vap->iv_opmode == IEEE80211_M_STA)
1750                 tmp |= RT2573_TSF_MODE(1);
1751         else
1752                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1753
1754         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1755 }
1756
1757 static void
1758 rum_enable_tsf(struct rum_softc *sc)
1759 {
1760         rum_write(sc, RT2573_TXRX_CSR9,
1761             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1762             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1763 }
1764
1765 static void
1766 rum_update_slot(struct ifnet *ifp)
1767 {
1768         struct rum_softc *sc = ifp->if_softc;
1769         struct ieee80211com *ic = ifp->if_l2com;
1770         uint8_t slottime;
1771         uint32_t tmp;
1772
1773         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1774
1775         tmp = rum_read(sc, RT2573_MAC_CSR9);
1776         tmp = (tmp & ~0xff) | slottime;
1777         rum_write(sc, RT2573_MAC_CSR9, tmp);
1778
1779         DPRINTF("setting slot time to %uus\n", slottime);
1780 }
1781
1782 static void
1783 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1784 {
1785         uint32_t tmp;
1786
1787         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1788         rum_write(sc, RT2573_MAC_CSR4, tmp);
1789
1790         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1791         rum_write(sc, RT2573_MAC_CSR5, tmp);
1792 }
1793
1794 static void
1795 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1796 {
1797         uint32_t tmp;
1798
1799         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1800         rum_write(sc, RT2573_MAC_CSR2, tmp);
1801
1802         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1803         rum_write(sc, RT2573_MAC_CSR3, tmp);
1804 }
1805
1806 static void
1807 rum_setpromisc(struct rum_softc *sc)
1808 {
1809         struct ifnet *ifp = sc->sc_ifp;
1810         uint32_t tmp;
1811
1812         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1813
1814         tmp &= ~RT2573_DROP_NOT_TO_ME;
1815         if (!(ifp->if_flags & IFF_PROMISC))
1816                 tmp |= RT2573_DROP_NOT_TO_ME;
1817
1818         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1819
1820         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1821             "entering" : "leaving");
1822 }
1823
1824 static void
1825 rum_update_promisc(struct ifnet *ifp)
1826 {
1827         struct rum_softc *sc = ifp->if_softc;
1828
1829         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1830                 return;
1831
1832         RUM_LOCK(sc);
1833         rum_setpromisc(sc);
1834         RUM_UNLOCK(sc);
1835 }
1836
1837 static void
1838 rum_update_mcast(struct ifnet *ifp)
1839 {
1840         static int warning_printed;
1841
1842         if (warning_printed == 0) {
1843                 if_printf(ifp, "need to implement %s\n", __func__);
1844                 warning_printed = 1;
1845         }
1846 }
1847
1848 static const char *
1849 rum_get_rf(int rev)
1850 {
1851         switch (rev) {
1852         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1853         case RT2573_RF_2528:    return "RT2528";
1854         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1855         case RT2573_RF_5226:    return "RT5226";
1856         default:                return "unknown";
1857         }
1858 }
1859
1860 static void
1861 rum_read_eeprom(struct rum_softc *sc)
1862 {
1863         uint16_t val;
1864 #ifdef RUM_DEBUG
1865         int i;
1866 #endif
1867
1868         /* read MAC address */
1869         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1870
1871         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1872         val = le16toh(val);
1873         sc->rf_rev =   (val >> 11) & 0x1f;
1874         sc->hw_radio = (val >> 10) & 0x1;
1875         sc->rx_ant =   (val >> 4)  & 0x3;
1876         sc->tx_ant =   (val >> 2)  & 0x3;
1877         sc->nb_ant =   val & 0x3;
1878
1879         DPRINTF("RF revision=%d\n", sc->rf_rev);
1880
1881         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1882         val = le16toh(val);
1883         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1884         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1885
1886         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1887             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1888
1889         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1890         val = le16toh(val);
1891         if ((val & 0xff) != 0xff)
1892                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1893
1894         /* Only [-10, 10] is valid */
1895         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1896                 sc->rssi_2ghz_corr = 0;
1897
1898         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1899         val = le16toh(val);
1900         if ((val & 0xff) != 0xff)
1901                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1902
1903         /* Only [-10, 10] is valid */
1904         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1905                 sc->rssi_5ghz_corr = 0;
1906
1907         if (sc->ext_2ghz_lna)
1908                 sc->rssi_2ghz_corr -= 14;
1909         if (sc->ext_5ghz_lna)
1910                 sc->rssi_5ghz_corr -= 14;
1911
1912         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1913             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1914
1915         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1916         val = le16toh(val);
1917         if ((val & 0xff) != 0xff)
1918                 sc->rffreq = val & 0xff;
1919
1920         DPRINTF("RF freq=%d\n", sc->rffreq);
1921
1922         /* read Tx power for all a/b/g channels */
1923         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1924         /* XXX default Tx power for 802.11a channels */
1925         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1926 #ifdef RUM_DEBUG
1927         for (i = 0; i < 14; i++)
1928                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1929 #endif
1930
1931         /* read default values for BBP registers */
1932         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1933 #ifdef RUM_DEBUG
1934         for (i = 0; i < 14; i++) {
1935                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1936                         continue;
1937                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1938                     sc->bbp_prom[i].val);
1939         }
1940 #endif
1941 }
1942
1943 static int
1944 rum_bbp_init(struct rum_softc *sc)
1945 {
1946         int i, ntries;
1947
1948         /* wait for BBP to be ready */
1949         for (ntries = 0; ntries < 100; ntries++) {
1950                 const uint8_t val = rum_bbp_read(sc, 0);
1951                 if (val != 0 && val != 0xff)
1952                         break;
1953                 if (rum_pause(sc, hz / 100))
1954                         break;
1955         }
1956         if (ntries == 100) {
1957                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1958                 return EIO;
1959         }
1960
1961         /* initialize BBP registers to default values */
1962         for (i = 0; i < N(rum_def_bbp); i++)
1963                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1964
1965         /* write vendor-specific BBP values (from EEPROM) */
1966         for (i = 0; i < 16; i++) {
1967                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1968                         continue;
1969                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
1970         }
1971
1972         return 0;
1973 }
1974
1975 static void
1976 rum_init_locked(struct rum_softc *sc)
1977 {
1978         struct ifnet *ifp = sc->sc_ifp;
1979         struct ieee80211com *ic = ifp->if_l2com;
1980         uint32_t tmp;
1981         usb_error_t error;
1982         int i, ntries;
1983
1984         RUM_LOCK_ASSERT(sc, MA_OWNED);
1985
1986         rum_stop(sc);
1987
1988         /* initialize MAC registers to default values */
1989         for (i = 0; i < N(rum_def_mac); i++)
1990                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
1991
1992         /* set host ready */
1993         rum_write(sc, RT2573_MAC_CSR1, 3);
1994         rum_write(sc, RT2573_MAC_CSR1, 0);
1995
1996         /* wait for BBP/RF to wakeup */
1997         for (ntries = 0; ntries < 100; ntries++) {
1998                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
1999                         break;
2000                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
2001                 if (rum_pause(sc, hz / 100))
2002                         break;
2003         }
2004         if (ntries == 100) {
2005                 device_printf(sc->sc_dev,
2006                     "timeout waiting for BBP/RF to wakeup\n");
2007                 goto fail;
2008         }
2009
2010         if ((error = rum_bbp_init(sc)) != 0)
2011                 goto fail;
2012
2013         /* select default channel */
2014         rum_select_band(sc, ic->ic_curchan);
2015         rum_select_antenna(sc);
2016         rum_set_chan(sc, ic->ic_curchan);
2017
2018         /* clear STA registers */
2019         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2020
2021         rum_set_macaddr(sc, IF_LLADDR(ifp));
2022
2023         /* initialize ASIC */
2024         rum_write(sc, RT2573_MAC_CSR1, 4);
2025
2026         /*
2027          * Allocate Tx and Rx xfer queues.
2028          */
2029         rum_setup_tx_list(sc);
2030
2031         /* update Rx filter */
2032         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2033
2034         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2035         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2036                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2037                        RT2573_DROP_ACKCTS;
2038                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2039                         tmp |= RT2573_DROP_TODS;
2040                 if (!(ifp->if_flags & IFF_PROMISC))
2041                         tmp |= RT2573_DROP_NOT_TO_ME;
2042         }
2043         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2044
2045         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2046         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2047         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2048         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2049         return;
2050
2051 fail:   rum_stop(sc);
2052 #undef N
2053 }
2054
2055 static void
2056 rum_init(void *priv)
2057 {
2058         struct rum_softc *sc = priv;
2059         struct ifnet *ifp = sc->sc_ifp;
2060         struct ieee80211com *ic = ifp->if_l2com;
2061
2062         RUM_LOCK(sc);
2063         rum_init_locked(sc);
2064         RUM_UNLOCK(sc);
2065
2066         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2067                 ieee80211_start_all(ic);                /* start all vap's */
2068 }
2069
2070 static void
2071 rum_stop(struct rum_softc *sc)
2072 {
2073         struct ifnet *ifp = sc->sc_ifp;
2074         uint32_t tmp;
2075
2076         RUM_LOCK_ASSERT(sc, MA_OWNED);
2077
2078         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2079
2080         RUM_UNLOCK(sc);
2081
2082         /*
2083          * Drain the USB transfers, if not already drained:
2084          */
2085         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2086         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2087
2088         RUM_LOCK(sc);
2089
2090         rum_unsetup_tx_list(sc);
2091
2092         /* disable Rx */
2093         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2094         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2095
2096         /* reset ASIC */
2097         rum_write(sc, RT2573_MAC_CSR1, 3);
2098         rum_write(sc, RT2573_MAC_CSR1, 0);
2099 }
2100
2101 static void
2102 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2103 {
2104         struct usb_device_request req;
2105         uint16_t reg = RT2573_MCU_CODE_BASE;
2106         usb_error_t err;
2107
2108         /* copy firmware image into NIC */
2109         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2110                 err = rum_write(sc, reg, UGETDW(ucode));
2111                 if (err) {
2112                         /* firmware already loaded ? */
2113                         device_printf(sc->sc_dev, "Firmware load "
2114                             "failure! (ignored)\n");
2115                         break;
2116                 }
2117         }
2118
2119         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2120         req.bRequest = RT2573_MCU_CNTL;
2121         USETW(req.wValue, RT2573_MCU_RUN);
2122         USETW(req.wIndex, 0);
2123         USETW(req.wLength, 0);
2124
2125         err = rum_do_request(sc, &req, NULL);
2126         if (err != 0) {
2127                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2128                     usbd_errstr(err));
2129         }
2130
2131         /* give the chip some time to boot */
2132         rum_pause(sc, hz / 8);
2133 }
2134
2135 static void
2136 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2137 {
2138         struct ieee80211com *ic = vap->iv_ic;
2139         const struct ieee80211_txparam *tp;
2140         struct rum_tx_desc desc;
2141         struct mbuf *m0;
2142
2143         if (vap->iv_bss->ni_chan == IEEE80211_CHAN_ANYC)
2144                 return;
2145         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2146                 return;
2147
2148         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2149         if (m0 == NULL)
2150                 return;
2151
2152         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2153         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2154             m0->m_pkthdr.len, tp->mgmtrate);
2155
2156         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2157         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2158
2159         /* copy beacon header and payload into NIC memory */
2160         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2161             m0->m_pkthdr.len);
2162
2163         m_freem(m0);
2164 }
2165
2166 static int
2167 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2168     const struct ieee80211_bpf_params *params)
2169 {
2170         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2171         struct rum_softc *sc = ifp->if_softc;
2172
2173         RUM_LOCK(sc);
2174         /* prevent management frames from being sent if we're not ready */
2175         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2176                 RUM_UNLOCK(sc);
2177                 m_freem(m);
2178                 ieee80211_free_node(ni);
2179                 return ENETDOWN;
2180         }
2181         if (sc->tx_nfree < RUM_TX_MINFREE) {
2182                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2183                 RUM_UNLOCK(sc);
2184                 m_freem(m);
2185                 ieee80211_free_node(ni);
2186                 return EIO;
2187         }
2188
2189         ifp->if_opackets++;
2190
2191         if (params == NULL) {
2192                 /*
2193                  * Legacy path; interpret frame contents to decide
2194                  * precisely how to send the frame.
2195                  */
2196                 if (rum_tx_mgt(sc, m, ni) != 0)
2197                         goto bad;
2198         } else {
2199                 /*
2200                  * Caller supplied explicit parameters to use in
2201                  * sending the frame.
2202                  */
2203                 if (rum_tx_raw(sc, m, ni, params) != 0)
2204                         goto bad;
2205         }
2206         RUM_UNLOCK(sc);
2207
2208         return 0;
2209 bad:
2210         ifp->if_oerrors++;
2211         RUM_UNLOCK(sc);
2212         ieee80211_free_node(ni);
2213         return EIO;
2214 }
2215
2216 static void
2217 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2218 {
2219         struct ieee80211vap *vap = ni->ni_vap;
2220         struct rum_vap *rvp = RUM_VAP(vap);
2221
2222         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2223         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2224
2225         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2226 }
2227
2228 static void
2229 rum_ratectl_timeout(void *arg)
2230 {
2231         struct rum_vap *rvp = arg;
2232         struct ieee80211vap *vap = &rvp->vap;
2233         struct ieee80211com *ic = vap->iv_ic;
2234
2235         ieee80211_runtask(ic, &rvp->ratectl_task);
2236 }
2237
2238 static void
2239 rum_ratectl_task(void *arg, int pending)
2240 {
2241         struct rum_vap *rvp = arg;
2242         struct ieee80211vap *vap = &rvp->vap;
2243         struct ieee80211com *ic = vap->iv_ic;
2244         struct ifnet *ifp = ic->ic_ifp;
2245         struct rum_softc *sc = ifp->if_softc;
2246         struct ieee80211_node *ni;
2247         int ok, fail;
2248         int sum, retrycnt;
2249
2250         RUM_LOCK(sc);
2251         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2252         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2253
2254         ok = (le32toh(sc->sta[4]) >> 16) +      /* TX ok w/o retry */
2255             (le32toh(sc->sta[5]) & 0xffff);     /* TX ok w/ retry */
2256         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2257         sum = ok+fail;
2258         retrycnt = (le32toh(sc->sta[5]) & 0xffff) + fail;
2259
2260         ni = ieee80211_ref_node(vap->iv_bss);
2261         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2262         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2263         ieee80211_free_node(ni);
2264
2265         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2266
2267         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2268         RUM_UNLOCK(sc);
2269 }
2270
2271 static void
2272 rum_scan_start(struct ieee80211com *ic)
2273 {
2274         struct ifnet *ifp = ic->ic_ifp;
2275         struct rum_softc *sc = ifp->if_softc;
2276         uint32_t tmp;
2277
2278         RUM_LOCK(sc);
2279         /* abort TSF synchronization */
2280         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2281         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2282         rum_set_bssid(sc, ifp->if_broadcastaddr);
2283         RUM_UNLOCK(sc);
2284
2285 }
2286
2287 static void
2288 rum_scan_end(struct ieee80211com *ic)
2289 {
2290         struct rum_softc *sc = ic->ic_ifp->if_softc;
2291
2292         RUM_LOCK(sc);
2293         rum_enable_tsf_sync(sc);
2294         rum_set_bssid(sc, sc->sc_bssid);
2295         RUM_UNLOCK(sc);
2296
2297 }
2298
2299 static void
2300 rum_set_channel(struct ieee80211com *ic)
2301 {
2302         struct rum_softc *sc = ic->ic_ifp->if_softc;
2303
2304         RUM_LOCK(sc);
2305         rum_set_chan(sc, ic->ic_curchan);
2306         RUM_UNLOCK(sc);
2307 }
2308
2309 static int
2310 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2311 {
2312         struct ifnet *ifp = sc->sc_ifp;
2313         struct ieee80211com *ic = ifp->if_l2com;
2314         int lna, agc, rssi;
2315
2316         lna = (raw >> 5) & 0x3;
2317         agc = raw & 0x1f;
2318
2319         if (lna == 0) {
2320                 /*
2321                  * No RSSI mapping
2322                  *
2323                  * NB: Since RSSI is relative to noise floor, -1 is
2324                  *     adequate for caller to know error happened.
2325                  */
2326                 return -1;
2327         }
2328
2329         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2330
2331         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2332                 rssi += sc->rssi_2ghz_corr;
2333
2334                 if (lna == 1)
2335                         rssi -= 64;
2336                 else if (lna == 2)
2337                         rssi -= 74;
2338                 else if (lna == 3)
2339                         rssi -= 90;
2340         } else {
2341                 rssi += sc->rssi_5ghz_corr;
2342
2343                 if (!sc->ext_5ghz_lna && lna != 1)
2344                         rssi += 4;
2345
2346                 if (lna == 1)
2347                         rssi -= 64;
2348                 else if (lna == 2)
2349                         rssi -= 86;
2350                 else if (lna == 3)
2351                         rssi -= 100;
2352         }
2353         return rssi;
2354 }
2355
2356 static int
2357 rum_pause(struct rum_softc *sc, int timeout)
2358 {
2359
2360         usb_pause_mtx(&sc->sc_mtx, timeout);
2361         return (0);
2362 }
2363
2364 static device_method_t rum_methods[] = {
2365         /* Device interface */
2366         DEVMETHOD(device_probe,         rum_match),
2367         DEVMETHOD(device_attach,        rum_attach),
2368         DEVMETHOD(device_detach,        rum_detach),
2369
2370         { 0, 0 }
2371 };
2372
2373 static driver_t rum_driver = {
2374         .name = "rum",
2375         .methods = rum_methods,
2376         .size = sizeof(struct rum_softc),
2377 };
2378
2379 static devclass_t rum_devclass;
2380
2381 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0);
2382 MODULE_DEPEND(rum, wlan, 1, 1, 1);
2383 MODULE_DEPEND(rum, usb, 1, 1, 1);
2384 MODULE_VERSION(rum, 1);