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(MB_DONTWAIT, 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                 RUM_LOCK(sc);
 969                 if (!ifq_is_oactive(&ifp->if_snd) &&
 970                     !ifq_is_empty(&ifp->if_snd))
 971                         rum_start_locked(ifp);
 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         RUM_LOCK_ASSERT(sc, MA_OWNED);
1230
1231         wh = mtod(m0, struct ieee80211_frame *);
1232
1233         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1234         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1235                 rate = tp->mcastrate;
1236         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1237                 rate = tp->ucastrate;
1238         else
1239                 rate = ni->ni_txrate;
1240
1241         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1242                 k = ieee80211_crypto_encap(ni, m0);
1243                 if (k == NULL) {
1244                         m_freem(m0);
1245                         return ENOBUFS;
1246                 }
1247
1248                 /* packet header may have moved, reset our local pointer */
1249                 wh = mtod(m0, struct ieee80211_frame *);
1250         }
1251
1252         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1253                 int prot = IEEE80211_PROT_NONE;
1254                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1255                         prot = IEEE80211_PROT_RTSCTS;
1256                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1257                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1258                         prot = ic->ic_protmode;
1259                 if (prot != IEEE80211_PROT_NONE) {
1260                         error = rum_sendprot(sc, m0, ni, prot, rate);
1261                         if (error || sc->tx_nfree == 0) {
1262                                 m_freem(m0);
1263                                 return ENOBUFS;
1264                         }
1265                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1266                 }
1267         }
1268
1269         data = STAILQ_FIRST(&sc->tx_free);
1270         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1271         sc->tx_nfree--;
1272
1273         data->m = m0;
1274         data->ni = ni;
1275         data->rate = rate;
1276
1277         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1278                 flags |= RT2573_TX_NEED_ACK;
1279                 flags |= RT2573_TX_MORE_FRAG;
1280
1281                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1282                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1283                 *(uint16_t *)wh->i_dur = htole16(dur);
1284         }
1285
1286         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1287
1288         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1289             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1290
1291         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1292         RUM_LOCK(sc);
1293         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1294         RUM_UNLOCK(sc);
1295
1296         return 0;
1297 }
1298
1299 static void
1300 rum_start_locked(struct ifnet *ifp)
1301 {
1302         struct rum_softc *sc = ifp->if_softc;
1303         struct ieee80211_node *ni;
1304         struct mbuf *m;
1305
1306         if ((ifp->if_flags & IFF_RUNNING) == 0) {
1307                 return;
1308         }
1309         for (;;) {
1310                 m = ifq_dequeue(&ifp->if_snd);
1311                 if (m == NULL)
1312                         break;
1313                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1314                         ifq_prepend(&ifp->if_snd, m);
1315                         ifq_set_oactive(&ifp->if_snd);
1316                         break;
1317                 }
1318                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1319                 if (rum_tx_data(sc, m, ni) != 0) {
1320                         ieee80211_free_node(ni);
1321                         ifp->if_oerrors++;
1322                         break;
1323                 }
1324         }
1325 }
1326
1327 static void
1328 rum_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
1329 {
1330         struct rum_softc *sc = ifp->if_softc;
1331
1332         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
1333         RUM_LOCK(sc);
1334         rum_start_locked(ifp);
1335         RUM_UNLOCK(sc);
1336 }
1337
1338 static int
1339 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred)
1340 {
1341         struct rum_softc *sc = ifp->if_softc;
1342         struct ieee80211com *ic = ifp->if_l2com;
1343         struct ifreq *ifr = (struct ifreq *) data;
1344         int error;
1345         int startall = 0;
1346
1347         RUM_LOCK(sc);
1348         error = sc->sc_detached ? ENXIO : 0;
1349         RUM_UNLOCK(sc);
1350         if (error)
1351                 return (error);
1352
1353         switch (cmd) {
1354         case SIOCSIFFLAGS:
1355                 RUM_LOCK(sc);
1356                 if (ifp->if_flags & IFF_UP) {
1357                         if ((ifp->if_flags & IFF_RUNNING) == 0) {
1358                                 rum_init_locked(sc);
1359                                 startall = 1;
1360                         } else
1361                                 rum_setpromisc(sc);
1362                 } else {
1363                         if (ifp->if_flags & IFF_RUNNING)
1364                                 rum_stop(sc);
1365                 }
1366                 RUM_UNLOCK(sc);
1367                 if (startall)
1368                         ieee80211_start_all(ic);
1369                 break;
1370         case SIOCGIFMEDIA:
1371                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1372                 break;
1373         case SIOCGIFADDR:
1374                 error = ether_ioctl(ifp, cmd, data);
1375                 break;
1376         default:
1377                 error = EINVAL;
1378                 break;
1379         }
1380         return error;
1381 }
1382
1383 static void
1384 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1385 {
1386         struct usb_device_request req;
1387         usb_error_t error;
1388
1389         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1390         req.bRequest = RT2573_READ_EEPROM;
1391         USETW(req.wValue, 0);
1392         USETW(req.wIndex, addr);
1393         USETW(req.wLength, len);
1394
1395         error = rum_do_request(sc, &req, buf);
1396         if (error != 0) {
1397                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1398                     usbd_errstr(error));
1399         }
1400 }
1401
1402 static uint32_t
1403 rum_read(struct rum_softc *sc, uint16_t reg)
1404 {
1405         uint32_t val;
1406
1407         rum_read_multi(sc, reg, &val, sizeof val);
1408
1409         return le32toh(val);
1410 }
1411
1412 static void
1413 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1414 {
1415         struct usb_device_request req;
1416         usb_error_t error;
1417
1418         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1419         req.bRequest = RT2573_READ_MULTI_MAC;
1420         USETW(req.wValue, 0);
1421         USETW(req.wIndex, reg);
1422         USETW(req.wLength, len);
1423
1424         error = rum_do_request(sc, &req, buf);
1425         if (error != 0) {
1426                 device_printf(sc->sc_dev,
1427                     "could not multi read MAC register: %s\n",
1428                     usbd_errstr(error));
1429         }
1430 }
1431
1432 static usb_error_t
1433 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1434 {
1435         uint32_t tmp = htole32(val);
1436
1437         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1438 }
1439
1440 static usb_error_t
1441 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1442 {
1443         struct usb_device_request req;
1444         usb_error_t error;
1445         size_t offset;
1446
1447         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1448         req.bRequest = RT2573_WRITE_MULTI_MAC;
1449         USETW(req.wValue, 0);
1450
1451         /* write at most 64 bytes at a time */
1452         for (offset = 0; offset < len; offset += 64) {
1453                 USETW(req.wIndex, reg + offset);
1454                 USETW(req.wLength, MIN(len - offset, 64));
1455
1456                 error = rum_do_request(sc, &req, (char *)buf + offset);
1457                 if (error != 0) {
1458                         device_printf(sc->sc_dev,
1459                             "could not multi write MAC register: %s\n",
1460                             usbd_errstr(error));
1461                         return (error);
1462                 }
1463         }
1464
1465         return (USB_ERR_NORMAL_COMPLETION);
1466 }
1467
1468 static void
1469 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1470 {
1471         uint32_t tmp;
1472         int ntries;
1473
1474         DPRINTFN(2, "reg=0x%08x\n", reg);
1475
1476         for (ntries = 0; ntries < 100; ntries++) {
1477                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1478                         break;
1479                 if (rum_pause(sc, hz / 100))
1480                         break;
1481         }
1482         if (ntries == 100) {
1483                 device_printf(sc->sc_dev, "could not write to BBP\n");
1484                 return;
1485         }
1486
1487         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1488         rum_write(sc, RT2573_PHY_CSR3, tmp);
1489 }
1490
1491 static uint8_t
1492 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1493 {
1494         uint32_t val;
1495         int ntries;
1496
1497         DPRINTFN(2, "reg=0x%08x\n", reg);
1498
1499         for (ntries = 0; ntries < 100; ntries++) {
1500                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1501                         break;
1502                 if (rum_pause(sc, hz / 100))
1503                         break;
1504         }
1505         if (ntries == 100) {
1506                 device_printf(sc->sc_dev, "could not read BBP\n");
1507                 return 0;
1508         }
1509
1510         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1511         rum_write(sc, RT2573_PHY_CSR3, val);
1512
1513         for (ntries = 0; ntries < 100; ntries++) {
1514                 val = rum_read(sc, RT2573_PHY_CSR3);
1515                 if (!(val & RT2573_BBP_BUSY))
1516                         return val & 0xff;
1517                 if (rum_pause(sc, hz / 100))
1518                         break;
1519         }
1520
1521         device_printf(sc->sc_dev, "could not read BBP\n");
1522         return 0;
1523 }
1524
1525 static void
1526 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1527 {
1528         uint32_t tmp;
1529         int ntries;
1530
1531         for (ntries = 0; ntries < 100; ntries++) {
1532                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1533                         break;
1534                 if (rum_pause(sc, hz / 100))
1535                         break;
1536         }
1537         if (ntries == 100) {
1538                 device_printf(sc->sc_dev, "could not write to RF\n");
1539                 return;
1540         }
1541
1542         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1543             (reg & 3);
1544         rum_write(sc, RT2573_PHY_CSR4, tmp);
1545
1546         /* remember last written value in sc */
1547         sc->rf_regs[reg] = val;
1548
1549         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1550 }
1551
1552 static void
1553 rum_select_antenna(struct rum_softc *sc)
1554 {
1555         uint8_t bbp4, bbp77;
1556         uint32_t tmp;
1557
1558         bbp4  = rum_bbp_read(sc, 4);
1559         bbp77 = rum_bbp_read(sc, 77);
1560
1561         /* TBD */
1562
1563         /* make sure Rx is disabled before switching antenna */
1564         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1565         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1566
1567         rum_bbp_write(sc,  4, bbp4);
1568         rum_bbp_write(sc, 77, bbp77);
1569
1570         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1571 }
1572
1573 /*
1574  * Enable multi-rate retries for frames sent at OFDM rates.
1575  * In 802.11b/g mode, allow fallback to CCK rates.
1576  */
1577 static void
1578 rum_enable_mrr(struct rum_softc *sc)
1579 {
1580         struct ifnet *ifp = sc->sc_ifp;
1581         struct ieee80211com *ic = ifp->if_l2com;
1582         uint32_t tmp;
1583
1584         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1585
1586         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1587         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1588                 tmp |= RT2573_MRR_CCK_FALLBACK;
1589         tmp |= RT2573_MRR_ENABLED;
1590
1591         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1592 }
1593
1594 static void
1595 rum_set_txpreamble(struct rum_softc *sc)
1596 {
1597         struct ifnet *ifp = sc->sc_ifp;
1598         struct ieee80211com *ic = ifp->if_l2com;
1599         uint32_t tmp;
1600
1601         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1602
1603         tmp &= ~RT2573_SHORT_PREAMBLE;
1604         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1605                 tmp |= RT2573_SHORT_PREAMBLE;
1606
1607         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1608 }
1609
1610 static void
1611 rum_set_basicrates(struct rum_softc *sc)
1612 {
1613         struct ifnet *ifp = sc->sc_ifp;
1614         struct ieee80211com *ic = ifp->if_l2com;
1615
1616         /* update basic rate set */
1617         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1618                 /* 11b basic rates: 1, 2Mbps */
1619                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1620         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1621                 /* 11a basic rates: 6, 12, 24Mbps */
1622                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1623         } else {
1624                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1625                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1626         }
1627 }
1628
1629 /*
1630  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1631  * driver.
1632  */
1633 static void
1634 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1635 {
1636         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1637         uint32_t tmp;
1638
1639         /* update all BBP registers that depend on the band */
1640         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1641         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1642         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1643                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1644                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1645         }
1646         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1647             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1648                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1649         }
1650
1651         sc->bbp17 = bbp17;
1652         rum_bbp_write(sc,  17, bbp17);
1653         rum_bbp_write(sc,  96, bbp96);
1654         rum_bbp_write(sc, 104, bbp104);
1655
1656         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1657             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1658                 rum_bbp_write(sc, 75, 0x80);
1659                 rum_bbp_write(sc, 86, 0x80);
1660                 rum_bbp_write(sc, 88, 0x80);
1661         }
1662
1663         rum_bbp_write(sc, 35, bbp35);
1664         rum_bbp_write(sc, 97, bbp97);
1665         rum_bbp_write(sc, 98, bbp98);
1666
1667         tmp = rum_read(sc, RT2573_PHY_CSR0);
1668         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1669         if (IEEE80211_IS_CHAN_2GHZ(c))
1670                 tmp |= RT2573_PA_PE_2GHZ;
1671         else
1672                 tmp |= RT2573_PA_PE_5GHZ;
1673         rum_write(sc, RT2573_PHY_CSR0, tmp);
1674 }
1675
1676 static void
1677 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1678 {
1679         struct ifnet *ifp = sc->sc_ifp;
1680         struct ieee80211com *ic = ifp->if_l2com;
1681         const struct rfprog *rfprog;
1682         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1683         int8_t power;
1684         int i, chan;
1685
1686         chan = ieee80211_chan2ieee(ic, c);
1687         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1688                 return;
1689
1690         /* select the appropriate RF settings based on what EEPROM says */
1691         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1692                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1693
1694         /* find the settings for this channel (we know it exists) */
1695         for (i = 0; rfprog[i].chan != chan; i++);
1696
1697         power = sc->txpow[i];
1698         if (power < 0) {
1699                 bbp94 += power;
1700                 power = 0;
1701         } else if (power > 31) {
1702                 bbp94 += power - 31;
1703                 power = 31;
1704         }
1705
1706         /*
1707          * If we are switching from the 2GHz band to the 5GHz band or
1708          * vice-versa, BBP registers need to be reprogrammed.
1709          */
1710         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1711                 rum_select_band(sc, c);
1712                 rum_select_antenna(sc);
1713         }
1714         ic->ic_curchan = c;
1715
1716         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1717         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1718         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1719         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1720
1721         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1722         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1723         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1724         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1725
1726         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1727         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1728         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1729         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1730
1731         rum_pause(sc, hz / 100);
1732
1733         /* enable smart mode for MIMO-capable RFs */
1734         bbp3 = rum_bbp_read(sc, 3);
1735
1736         bbp3 &= ~RT2573_SMART_MODE;
1737         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1738                 bbp3 |= RT2573_SMART_MODE;
1739
1740         rum_bbp_write(sc, 3, bbp3);
1741
1742         if (bbp94 != RT2573_BBPR94_DEFAULT)
1743                 rum_bbp_write(sc, 94, bbp94);
1744
1745         /* give the chip some extra time to do the switchover */
1746         rum_pause(sc, hz / 100);
1747 }
1748
1749 /*
1750  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1751  * and HostAP operating modes.
1752  */
1753 static void
1754 rum_enable_tsf_sync(struct rum_softc *sc)
1755 {
1756         struct ifnet *ifp = sc->sc_ifp;
1757         struct ieee80211com *ic = ifp->if_l2com;
1758         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1759         uint32_t tmp;
1760
1761         if (vap->iv_opmode != IEEE80211_M_STA) {
1762                 /*
1763                  * Change default 16ms TBTT adjustment to 8ms.
1764                  * Must be done before enabling beacon generation.
1765                  */
1766                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1767         }
1768
1769         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1770
1771         /* set beacon interval (in 1/16ms unit) */
1772         tmp |= vap->iv_bss->ni_intval * 16;
1773
1774         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1775         if (vap->iv_opmode == IEEE80211_M_STA)
1776                 tmp |= RT2573_TSF_MODE(1);
1777         else
1778                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1779
1780         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1781 }
1782
1783 static void
1784 rum_enable_tsf(struct rum_softc *sc)
1785 {
1786         rum_write(sc, RT2573_TXRX_CSR9,
1787             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1788             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1789 }
1790
1791 static void
1792 rum_update_slot(struct ifnet *ifp)
1793 {
1794         struct rum_softc *sc = ifp->if_softc;
1795         struct ieee80211com *ic = ifp->if_l2com;
1796         uint8_t slottime;
1797         uint32_t tmp;
1798
1799         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1800
1801         tmp = rum_read(sc, RT2573_MAC_CSR9);
1802         tmp = (tmp & ~0xff) | slottime;
1803         rum_write(sc, RT2573_MAC_CSR9, tmp);
1804
1805         DPRINTF("setting slot time to %uus\n", slottime);
1806 }
1807
1808 static void
1809 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1810 {
1811         uint32_t tmp;
1812
1813         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1814         rum_write(sc, RT2573_MAC_CSR4, tmp);
1815
1816         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1817         rum_write(sc, RT2573_MAC_CSR5, tmp);
1818 }
1819
1820 static void
1821 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1822 {
1823         uint32_t tmp;
1824
1825         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1826         rum_write(sc, RT2573_MAC_CSR2, tmp);
1827
1828         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1829         rum_write(sc, RT2573_MAC_CSR3, tmp);
1830 }
1831
1832 static void
1833 rum_setpromisc(struct rum_softc *sc)
1834 {
1835         struct ifnet *ifp = sc->sc_ifp;
1836         uint32_t tmp;
1837
1838         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1839
1840         tmp &= ~RT2573_DROP_NOT_TO_ME;
1841         if (!(ifp->if_flags & IFF_PROMISC))
1842                 tmp |= RT2573_DROP_NOT_TO_ME;
1843
1844         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1845
1846         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1847             "entering" : "leaving");
1848 }
1849
1850 static void
1851 rum_update_promisc(struct ifnet *ifp)
1852 {
1853         struct rum_softc *sc = ifp->if_softc;
1854
1855         if ((ifp->if_flags & IFF_RUNNING) == 0)
1856                 return;
1857
1858         RUM_LOCK(sc);
1859         rum_setpromisc(sc);
1860         RUM_UNLOCK(sc);
1861 }
1862
1863 static void
1864 rum_update_mcast(struct ifnet *ifp)
1865 {
1866         static int warning_printed;
1867
1868         if (warning_printed == 0) {
1869                 if_printf(ifp, "need to implement %s\n", __func__);
1870                 warning_printed = 1;
1871         }
1872 }
1873
1874 static const char *
1875 rum_get_rf(int rev)
1876 {
1877         switch (rev) {
1878         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1879         case RT2573_RF_2528:    return "RT2528";
1880         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1881         case RT2573_RF_5226:    return "RT5226";
1882         default:                return "unknown";
1883         }
1884 }
1885
1886 static void
1887 rum_read_eeprom(struct rum_softc *sc)
1888 {
1889         uint16_t val;
1890 #ifdef RUM_DEBUG
1891         int i;
1892 #endif
1893
1894         /* read MAC address */
1895         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1896
1897         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1898         val = le16toh(val);
1899         sc->rf_rev =   (val >> 11) & 0x1f;
1900         sc->hw_radio = (val >> 10) & 0x1;
1901         sc->rx_ant =   (val >> 4)  & 0x3;
1902         sc->tx_ant =   (val >> 2)  & 0x3;
1903         sc->nb_ant =   val & 0x3;
1904
1905         DPRINTF("RF revision=%d\n", sc->rf_rev);
1906
1907         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1908         val = le16toh(val);
1909         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1910         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1911
1912         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1913             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1914
1915         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1916         val = le16toh(val);
1917         if ((val & 0xff) != 0xff)
1918                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1919
1920         /* Only [-10, 10] is valid */
1921         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1922                 sc->rssi_2ghz_corr = 0;
1923
1924         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1925         val = le16toh(val);
1926         if ((val & 0xff) != 0xff)
1927                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1928
1929         /* Only [-10, 10] is valid */
1930         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1931                 sc->rssi_5ghz_corr = 0;
1932
1933         if (sc->ext_2ghz_lna)
1934                 sc->rssi_2ghz_corr -= 14;
1935         if (sc->ext_5ghz_lna)
1936                 sc->rssi_5ghz_corr -= 14;
1937
1938         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1939             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1940
1941         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1942         val = le16toh(val);
1943         if ((val & 0xff) != 0xff)
1944                 sc->rffreq = val & 0xff;
1945
1946         DPRINTF("RF freq=%d\n", sc->rffreq);
1947
1948         /* read Tx power for all a/b/g channels */
1949         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1950         /* XXX default Tx power for 802.11a channels */
1951         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1952 #ifdef RUM_DEBUG
1953         for (i = 0; i < 14; i++)
1954                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1955 #endif
1956
1957         /* read default values for BBP registers */
1958         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1959 #ifdef RUM_DEBUG
1960         for (i = 0; i < 14; i++) {
1961                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1962                         continue;
1963                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1964                     sc->bbp_prom[i].val);
1965         }
1966 #endif
1967 }
1968
1969 static int
1970 rum_bbp_init(struct rum_softc *sc)
1971 {
1972         int i, ntries;
1973
1974         /* wait for BBP to be ready */
1975         for (ntries = 0; ntries < 100; ntries++) {
1976                 const uint8_t val = rum_bbp_read(sc, 0);
1977                 if (val != 0 && val != 0xff)
1978                         break;
1979                 if (rum_pause(sc, hz / 100))
1980                         break;
1981         }
1982         if (ntries == 100) {
1983                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1984                 return EIO;
1985         }
1986
1987         /* initialize BBP registers to default values */
1988         for (i = 0; i < N(rum_def_bbp); i++)
1989                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1990
1991         /* write vendor-specific BBP values (from EEPROM) */
1992         for (i = 0; i < 16; i++) {
1993                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1994                         continue;
1995                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
1996         }
1997
1998         return 0;
1999 }
2000
2001 static void
2002 rum_init_locked(struct rum_softc *sc)
2003 {
2004         struct ifnet *ifp = sc->sc_ifp;
2005         struct ieee80211com *ic = ifp->if_l2com;
2006         uint32_t tmp;
2007         usb_error_t error;
2008         int i, ntries;
2009
2010         RUM_LOCK_ASSERT(sc, MA_OWNED);
2011
2012         rum_stop(sc);
2013
2014         /* initialize MAC registers to default values */
2015         for (i = 0; i < N(rum_def_mac); i++)
2016                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
2017
2018         /* set host ready */
2019         rum_write(sc, RT2573_MAC_CSR1, 3);
2020         rum_write(sc, RT2573_MAC_CSR1, 0);
2021
2022         /* wait for BBP/RF to wakeup */
2023         for (ntries = 0; ntries < 100; ntries++) {
2024                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
2025                         break;
2026                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
2027                 if (rum_pause(sc, hz / 100))
2028                         break;
2029         }
2030         if (ntries == 100) {
2031                 device_printf(sc->sc_dev,
2032                     "timeout waiting for BBP/RF to wakeup\n");
2033                 goto fail;
2034         }
2035
2036         if ((error = rum_bbp_init(sc)) != 0)
2037                 goto fail;
2038
2039         /* select default channel */
2040         rum_select_band(sc, ic->ic_curchan);
2041         rum_select_antenna(sc);
2042         rum_set_chan(sc, ic->ic_curchan);
2043
2044         /* clear STA registers */
2045         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2046
2047         rum_set_macaddr(sc, IF_LLADDR(ifp));
2048
2049         /* initialize ASIC */
2050         rum_write(sc, RT2573_MAC_CSR1, 4);
2051
2052         /*
2053          * Allocate Tx and Rx xfer queues.
2054          */
2055         rum_setup_tx_list(sc);
2056
2057         /* update Rx filter */
2058         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2059
2060         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2061         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2062                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2063                        RT2573_DROP_ACKCTS;
2064                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2065                         tmp |= RT2573_DROP_TODS;
2066                 if (!(ifp->if_flags & IFF_PROMISC))
2067                         tmp |= RT2573_DROP_NOT_TO_ME;
2068         }
2069         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2070
2071         ifq_clr_oactive(&ifp->if_snd);
2072         ifp->if_flags |= IFF_RUNNING;
2073         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2074         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2075         return;
2076
2077 fail:   rum_stop(sc);
2078 #undef N
2079 }
2080
2081 static void
2082 rum_init(void *priv)
2083 {
2084         struct rum_softc *sc = priv;
2085         struct ifnet *ifp = sc->sc_ifp;
2086         struct ieee80211com *ic = ifp->if_l2com;
2087
2088         RUM_LOCK(sc);
2089         rum_init_locked(sc);
2090         RUM_UNLOCK(sc);
2091
2092         if (ifp->if_flags & IFF_RUNNING)
2093                 ieee80211_start_all(ic);                /* start all vap's */
2094 }
2095
2096 static void
2097 rum_stop(struct rum_softc *sc)
2098 {
2099         struct ifnet *ifp = sc->sc_ifp;
2100         uint32_t tmp;
2101
2102         RUM_LOCK_ASSERT(sc, MA_OWNED);
2103
2104         ifp->if_flags &= ~IFF_RUNNING;
2105         ifq_clr_oactive(&ifp->if_snd);
2106
2107         RUM_UNLOCK(sc);
2108
2109         /*
2110          * Drain the USB transfers, if not already drained:
2111          */
2112         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2113         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2114
2115         RUM_LOCK(sc);
2116
2117         rum_unsetup_tx_list(sc);
2118
2119         /* disable Rx */
2120         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2121         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2122
2123         /* reset ASIC */
2124         rum_write(sc, RT2573_MAC_CSR1, 3);
2125         rum_write(sc, RT2573_MAC_CSR1, 0);
2126 }
2127
2128 static void
2129 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2130 {
2131         struct usb_device_request req;
2132         uint16_t reg = RT2573_MCU_CODE_BASE;
2133         usb_error_t err;
2134
2135         /* copy firmware image into NIC */
2136         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2137                 err = rum_write(sc, reg, UGETDW(ucode));
2138                 if (err) {
2139                         /* firmware already loaded ? */
2140                         device_printf(sc->sc_dev, "Firmware load "
2141                             "failure! (ignored)\n");
2142                         break;
2143                 }
2144         }
2145
2146         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2147         req.bRequest = RT2573_MCU_CNTL;
2148         USETW(req.wValue, RT2573_MCU_RUN);
2149         USETW(req.wIndex, 0);
2150         USETW(req.wLength, 0);
2151
2152         err = rum_do_request(sc, &req, NULL);
2153         if (err != 0) {
2154                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2155                     usbd_errstr(err));
2156         }
2157
2158         /* give the chip some time to boot */
2159         rum_pause(sc, hz / 8);
2160 }
2161
2162 static void
2163 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2164 {
2165         struct ieee80211com *ic = vap->iv_ic;
2166         const struct ieee80211_txparam *tp;
2167         struct rum_tx_desc desc;
2168         struct mbuf *m0;
2169
2170         if (vap->iv_bss->ni_chan == IEEE80211_CHAN_ANYC)
2171                 return;
2172         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2173                 return;
2174
2175         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2176         if (m0 == NULL)
2177                 return;
2178
2179         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2180         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2181             m0->m_pkthdr.len, tp->mgmtrate);
2182
2183         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2184         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2185
2186         /* copy beacon header and payload into NIC memory */
2187         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2188             m0->m_pkthdr.len);
2189
2190         m_freem(m0);
2191 }
2192
2193 static int
2194 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2195     const struct ieee80211_bpf_params *params)
2196 {
2197         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2198         struct rum_softc *sc = ifp->if_softc;
2199
2200         RUM_LOCK(sc);
2201         /* prevent management frames from being sent if we're not ready */
2202         if (!(ifp->if_flags & IFF_RUNNING)) {
2203                 RUM_UNLOCK(sc);
2204                 m_freem(m);
2205                 ieee80211_free_node(ni);
2206                 return ENETDOWN;
2207         }
2208         if (sc->tx_nfree < RUM_TX_MINFREE) {
2209                 ifq_set_oactive(&ifp->if_snd);
2210                 RUM_UNLOCK(sc);
2211                 m_freem(m);
2212                 ieee80211_free_node(ni);
2213                 return EIO;
2214         }
2215
2216         ifp->if_opackets++;
2217
2218         if (params == NULL) {
2219                 /*
2220                  * Legacy path; interpret frame contents to decide
2221                  * precisely how to send the frame.
2222                  */
2223                 if (rum_tx_mgt(sc, m, ni) != 0)
2224                         goto bad;
2225         } else {
2226                 /*
2227                  * Caller supplied explicit parameters to use in
2228                  * sending the frame.
2229                  */
2230                 if (rum_tx_raw(sc, m, ni, params) != 0)
2231                         goto bad;
2232         }
2233         RUM_UNLOCK(sc);
2234
2235         return 0;
2236 bad:
2237         ifp->if_oerrors++;
2238         RUM_UNLOCK(sc);
2239         ieee80211_free_node(ni);
2240         return EIO;
2241 }
2242
2243 static void
2244 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2245 {
2246         struct ieee80211vap *vap = ni->ni_vap;
2247         struct rum_vap *rvp = RUM_VAP(vap);
2248
2249         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2250         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2251
2252         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2253 }
2254
2255 static void
2256 rum_ratectl_timeout(void *arg)
2257 {
2258         struct rum_vap *rvp = arg;
2259         struct ieee80211vap *vap = &rvp->vap;
2260         struct ieee80211com *ic = vap->iv_ic;
2261
2262         ieee80211_runtask(ic, &rvp->ratectl_task);
2263 }
2264
2265 static void
2266 rum_ratectl_task(void *arg, int pending)
2267 {
2268         struct rum_vap *rvp = arg;
2269         struct ieee80211vap *vap = &rvp->vap;
2270         struct ieee80211com *ic = vap->iv_ic;
2271         struct ifnet *ifp = ic->ic_ifp;
2272         struct rum_softc *sc = ifp->if_softc;
2273         struct ieee80211_node *ni;
2274         int ok, fail;
2275         int sum, retrycnt;
2276
2277         RUM_LOCK(sc);
2278         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2279         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2280
2281         ok = (le32toh(sc->sta[4]) & 0xffff) +   /* TX no-retry ok count */
2282             (le32toh(sc->sta[4]) >> 16) +       /* TX one-retry ok count */
2283             (le32toh(sc->sta[5]) & 0xffff);     /* TX more-retry ok count */
2284         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2285         sum = ok+fail;
2286         retrycnt = (le32toh(sc->sta[4]) >> 16) +
2287             (le32toh(sc->sta[5]) & 0xffff) + fail;
2288
2289         ni = ieee80211_ref_node(vap->iv_bss);
2290         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2291         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2292         ieee80211_free_node(ni);
2293
2294         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2295
2296         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2297         RUM_UNLOCK(sc);
2298 }
2299
2300 static void
2301 rum_scan_start(struct ieee80211com *ic)
2302 {
2303         struct ifnet *ifp = ic->ic_ifp;
2304         struct rum_softc *sc = ifp->if_softc;
2305         uint32_t tmp;
2306
2307         RUM_LOCK(sc);
2308         /* abort TSF synchronization */
2309         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2310         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2311         rum_set_bssid(sc, ifp->if_broadcastaddr);
2312         RUM_UNLOCK(sc);
2313
2314 }
2315
2316 static void
2317 rum_scan_end(struct ieee80211com *ic)
2318 {
2319         struct rum_softc *sc = ic->ic_ifp->if_softc;
2320
2321         RUM_LOCK(sc);
2322         rum_enable_tsf_sync(sc);
2323         rum_set_bssid(sc, sc->sc_bssid);
2324         RUM_UNLOCK(sc);
2325
2326 }
2327
2328 static void
2329 rum_set_channel(struct ieee80211com *ic)
2330 {
2331         struct rum_softc *sc = ic->ic_ifp->if_softc;
2332
2333         RUM_LOCK(sc);
2334         rum_set_chan(sc, ic->ic_curchan);
2335         RUM_UNLOCK(sc);
2336 }
2337
2338 static int
2339 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2340 {
2341         struct ifnet *ifp = sc->sc_ifp;
2342         struct ieee80211com *ic = ifp->if_l2com;
2343         int lna, agc, rssi;
2344
2345         lna = (raw >> 5) & 0x3;
2346         agc = raw & 0x1f;
2347
2348         if (lna == 0) {
2349                 /*
2350                  * No RSSI mapping
2351                  *
2352                  * NB: Since RSSI is relative to noise floor, -1 is
2353                  *     adequate for caller to know error happened.
2354                  */
2355                 return -1;
2356         }
2357
2358         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2359
2360         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2361                 rssi += sc->rssi_2ghz_corr;
2362
2363                 if (lna == 1)
2364                         rssi -= 64;
2365                 else if (lna == 2)
2366                         rssi -= 74;
2367                 else if (lna == 3)
2368                         rssi -= 90;
2369         } else {
2370                 rssi += sc->rssi_5ghz_corr;
2371
2372                 if (!sc->ext_5ghz_lna && lna != 1)
2373                         rssi += 4;
2374
2375                 if (lna == 1)
2376                         rssi -= 64;
2377                 else if (lna == 2)
2378                         rssi -= 86;
2379                 else if (lna == 3)
2380                         rssi -= 100;
2381         }
2382         return rssi;
2383 }
2384
2385 static int
2386 rum_pause(struct rum_softc *sc, int timeout)
2387 {
2388         usb_pause_ls(lockowned(&sc->sc_lock) ? &sc->sc_lock : NULL,
2389             &wlan_global_serializer, timeout + 1);
2390         return (0);
2391 }
2392
2393 static device_method_t rum_methods[] = {
2394         /* Device interface */
2395         DEVMETHOD(device_probe,         rum_match),
2396         DEVMETHOD(device_attach,        rum_attach),
2397         DEVMETHOD(device_detach,        rum_detach),
2398         DEVMETHOD_END
2399 };
2400
2401 static driver_t rum_driver = {
2402         .name = "rum",
2403         .methods = rum_methods,
2404         .size = sizeof(struct rum_softc),
2405 };
2406
2407 static devclass_t rum_devclass;
2408
2409 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, NULL);
2410 MODULE_DEPEND(rum, wlan, 1, 1, 1);
2411 MODULE_DEPEND(rum, usb, 1, 1, 1);
2412 MODULE_VERSION(rum, 1);