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 <bus/u4b/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 void             rum_newassoc(struct ieee80211_node *, int);
 163 static int              rum_newstate(struct ieee80211vap *,
 164                             enum ieee80211_state, int);
 165 static void             rum_setup_tx_desc(struct rum_softc *,
 166                             struct rum_tx_desc *, uint32_t, uint16_t, int,
 167                             int);
 168 static int              rum_tx_mgt(struct rum_softc *, struct mbuf *,
 169                             struct ieee80211_node *);
 170 static int              rum_tx_raw(struct rum_softc *, struct mbuf *,
 171                             struct ieee80211_node *,
 172                             const struct ieee80211_bpf_params *);
 173 static int              rum_tx_data(struct rum_softc *, struct mbuf *,
 174                             struct ieee80211_node *);
 175 static void             rum_start_locked(struct ifnet *);
 176 static void             rum_start(struct ifnet *, struct ifaltq_subque *);
 177 static int              rum_ioctl(struct ifnet *, u_long, caddr_t,
 178                             struct ucred *);
 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         wlan_serialize_enter();
 434         device_set_usb_desc(self);
 435         sc->sc_udev = uaa->device;
 436         sc->sc_dev = self;
 437
 438         lockinit(&sc->sc_lock, device_get_nameunit(self), 0, LK_CANRECURSE);
 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_lock);
 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 #if 0 /* XXX swildner: see c3d4131842e47b168d93a0650d58d425ebeef789 */
 487         ifq_set_ready(&ifp->if_snd);
 488 #endif
 489
 490         ic->ic_ifp = ifp;
 491         ic->ic_opmode = IEEE80211_M_STA;
 492         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 493
 494         /* set device capabilities */
 495         ic->ic_caps =
 496               IEEE80211_C_STA           /* station mode supported */
 497             | IEEE80211_C_IBSS          /* IBSS mode supported */
 498             | IEEE80211_C_MONITOR       /* monitor mode supported */
 499             | IEEE80211_C_HOSTAP        /* HostAp mode supported */
 500             | IEEE80211_C_TXPMGT        /* tx power management */
 501             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 502             | IEEE80211_C_SHSLOT        /* short slot time supported */
 503             | IEEE80211_C_BGSCAN        /* bg scanning supported */
 504             | IEEE80211_C_WPA           /* 802.11i */
 505             ;
 506
 507         bands = 0;
 508         setbit(&bands, IEEE80211_MODE_11B);
 509         setbit(&bands, IEEE80211_MODE_11G);
 510         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226)
 511                 setbit(&bands, IEEE80211_MODE_11A);
 512         ieee80211_init_channels(ic, NULL, &bands);
 513
 514         ieee80211_ifattach(ic, sc->sc_bssid);
 515         ic->ic_newassoc = rum_newassoc;
 516         ic->ic_update_promisc = rum_update_promisc;
 517         ic->ic_raw_xmit = rum_raw_xmit;
 518         ic->ic_scan_start = rum_scan_start;
 519         ic->ic_scan_end = rum_scan_end;
 520         ic->ic_set_channel = rum_set_channel;
 521
 522         ic->ic_vap_create = rum_vap_create;
 523         ic->ic_vap_delete = rum_vap_delete;
 524         ic->ic_update_mcast = rum_update_mcast;
 525
 526         ieee80211_radiotap_attach(ic,
 527             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 528                 RT2573_TX_RADIOTAP_PRESENT,
 529             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 530                 RT2573_RX_RADIOTAP_PRESENT);
 531
 532         if (bootverbose)
 533                 ieee80211_announce(ic);
 534
 535         wlan_serialize_exit();
 536         return (0);
 537
 538 detach:
 539         wlan_serialize_exit();
 540         rum_detach(self);
 541         return (ENXIO);                 /* failure */
 542 }
 543
 544 static int
 545 rum_detach(device_t self)
 546 {
 547         struct rum_softc *sc = device_get_softc(self);
 548         struct ifnet *ifp = sc->sc_ifp;
 549         struct ieee80211com *ic;
 550
 551         wlan_serialize_enter();
 552         /* Prevent further ioctls */
 553         sc->sc_detached = 1;
 554
 555         /* stop all USB transfers */
 556         usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
 557
 558         /* free TX list, if any */
 559         RUM_LOCK(sc);
 560         rum_unsetup_tx_list(sc);
 561         RUM_UNLOCK(sc);
 562
 563         if (ifp) {
 564                 ic = ifp->if_l2com;
 565                 ieee80211_ifdetach(ic);
 566                 if_free(ifp);
 567         }
 568         lockuninit(&sc->sc_lock);
 569         wlan_serialize_exit();
 570         return (0);
 571 }
 572
 573 static usb_error_t
 574 rum_do_request(struct rum_softc *sc,
 575     struct usb_device_request *req, void *data)
 576 {
 577         usb_error_t err;
 578         int ntries = 10;
 579
 580         while (ntries--) {
 581                 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_lock,
 582                     req, data, 0, NULL, 250 /* ms */);
 583                 if (err == 0)
 584                         break;
 585
 586                 DPRINTFN(1, "Control request failed, %s (retrying)\n",
 587                     usbd_errstr(err));
 588                 if (rum_pause(sc, hz / 100))
 589                         break;
 590         }
 591         return (err);
 592 }
 593
 594 static struct ieee80211vap *
 595 rum_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 596     enum ieee80211_opmode opmode, int flags,
 597     const uint8_t bssid[IEEE80211_ADDR_LEN],
 598     const uint8_t mac[IEEE80211_ADDR_LEN])
 599 {
 600         struct rum_softc *sc = ic->ic_ifp->if_softc;
 601         struct rum_vap *rvp;
 602         struct ieee80211vap *vap;
 603
 604         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 605                 return NULL;
 606         rvp = (struct rum_vap *) kmalloc(sizeof(struct rum_vap),
 607             M_80211_VAP, M_INTWAIT | M_ZERO);
 608         if (rvp == NULL)
 609                 return NULL;
 610         vap = &rvp->vap;
 611         /* enable s/w bmiss handling for sta mode */
 612         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 613             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 614
 615         /* override state transition machine */
 616         rvp->newstate = vap->iv_newstate;
 617         vap->iv_newstate = rum_newstate;
 618
 619         usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_lock, 0);
 620         TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
 621         ieee80211_ratectl_init(vap);
 622         ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
 623         /* complete setup */
 624         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 625         ic->ic_opmode = opmode;
 626         return vap;
 627 }
 628
 629 static void
 630 rum_vap_delete(struct ieee80211vap *vap)
 631 {
 632         struct rum_vap *rvp = RUM_VAP(vap);
 633         struct ieee80211com *ic = vap->iv_ic;
 634
 635         usb_callout_drain(&rvp->ratectl_ch);
 636         ieee80211_draintask(ic, &rvp->ratectl_task);
 637         ieee80211_ratectl_deinit(vap);
 638         ieee80211_vap_detach(vap);
 639         kfree(rvp, M_80211_VAP);
 640 }
 641
 642 static void
 643 rum_tx_free(struct rum_tx_data *data, int txerr)
 644 {
 645         struct rum_softc *sc = data->sc;
 646
 647         if (data->m != NULL) {
 648                 if (data->m->m_flags & M_TXCB)
 649                         ieee80211_process_callback(data->ni, data->m,
 650                             txerr ? ETIMEDOUT : 0);
 651                 m_freem(data->m);
 652                 data->m = NULL;
 653
 654                 ieee80211_free_node(data->ni);
 655                 data->ni = NULL;
 656         }
 657         STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 658         sc->tx_nfree++;
 659 }
 660
 661 static void
 662 rum_setup_tx_list(struct rum_softc *sc)
 663 {
 664         struct rum_tx_data *data;
 665         int i;
 666
 667         sc->tx_nfree = 0;
 668         STAILQ_INIT(&sc->tx_q);
 669         STAILQ_INIT(&sc->tx_free);
 670
 671         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 672                 data = &sc->tx_data[i];
 673
 674                 data->sc = sc;
 675                 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 676                 sc->tx_nfree++;
 677         }
 678 }
 679
 680 static void
 681 rum_unsetup_tx_list(struct rum_softc *sc)
 682 {
 683         struct rum_tx_data *data;
 684         int i;
 685
 686         /* make sure any subsequent use of the queues will fail */
 687         sc->tx_nfree = 0;
 688         STAILQ_INIT(&sc->tx_q);
 689         STAILQ_INIT(&sc->tx_free);
 690
 691         /* free up all node references and mbufs */
 692         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 693                 data = &sc->tx_data[i];
 694
 695                 if (data->m != NULL) {
 696                         m_freem(data->m);
 697                         data->m = NULL;
 698                 }
 699                 if (data->ni != NULL) {
 700                         ieee80211_free_node(data->ni);
 701                         data->ni = NULL;
 702                 }
 703         }
 704 }
 705
 706 static void
 707 rum_newassoc(struct ieee80211_node *ni, int isnew)
 708 {
 709         ieee80211_ratectl_node_deinit(ni);
 710         ieee80211_ratectl_node_init(ni);
 711 }
 712
 713 static int
 714 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 715 {
 716         struct rum_vap *rvp = RUM_VAP(vap);
 717         struct ieee80211com *ic = vap->iv_ic;
 718         struct rum_softc *sc = ic->ic_ifp->if_softc;
 719         const struct ieee80211_txparam *tp;
 720         enum ieee80211_state ostate;
 721         struct ieee80211_node *ni;
 722         uint32_t tmp;
 723
 724         ostate = vap->iv_state;
 725         DPRINTF("%s -> %s\n",
 726                 ieee80211_state_name[ostate],
 727                 ieee80211_state_name[nstate]);
 728
 729 #if 0 /* XXX swildner: needed? */
 730         IEEE80211_UNLOCK(ic);
 731 #endif
 732         RUM_LOCK(sc);
 733         usb_callout_stop(&rvp->ratectl_ch);
 734
 735         switch (nstate) {
 736         case IEEE80211_S_INIT:
 737                 if (ostate == IEEE80211_S_RUN) {
 738                         /* abort TSF synchronization */
 739                         tmp = rum_read(sc, RT2573_TXRX_CSR9);
 740                         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
 741                 }
 742                 break;
 743
 744         case IEEE80211_S_RUN:
 745                 ni = ieee80211_ref_node(vap->iv_bss);
 746
 747                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
 748                         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) {
 749                                 RUM_UNLOCK(sc);
 750 #if 0 /* XXX swildner: needed? */
 751                                 IEEE80211_LOCK(ic);
 752 #endif
 753                                 ieee80211_free_node(ni);
 754                                 return (-1);
 755                         }
 756                         rum_update_slot(ic->ic_ifp);
 757                         rum_enable_mrr(sc);
 758                         rum_set_txpreamble(sc);
 759                         rum_set_basicrates(sc);
 760                         IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
 761                         rum_set_bssid(sc, sc->sc_bssid);
 762                 }
 763
 764                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 765                     vap->iv_opmode == IEEE80211_M_IBSS)
 766                         rum_prepare_beacon(sc, vap);
 767
 768                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
 769                         rum_enable_tsf_sync(sc);
 770                 else
 771                         rum_enable_tsf(sc);
 772
 773                 /* enable automatic rate adaptation */
 774                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 775                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
 776                         rum_ratectl_start(sc, ni);
 777                 ieee80211_free_node(ni);
 778                 break;
 779         default:
 780                 break;
 781         }
 782         RUM_UNLOCK(sc);
 783 #if 0 /* XXX swildner: needed? */
 784         IEEE80211_LOCK(ic);
 785 #endif
 786         return (rvp->newstate(vap, nstate, arg));
 787 }
 788
 789 static void
 790 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 791 {
 792         struct rum_softc *sc = usbd_xfer_softc(xfer);
 793         struct ifnet *ifp = sc->sc_ifp;
 794         struct ieee80211vap *vap;
 795         struct rum_tx_data *data;
 796         struct mbuf *m;
 797         struct usb_page_cache *pc;
 798         unsigned int len;
 799         int actlen, sumlen;
 800
 801         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 802
 803         switch (USB_GET_STATE(xfer)) {
 804         case USB_ST_TRANSFERRED:
 805                 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
 806
 807                 /* free resources */
 808                 data = usbd_xfer_get_priv(xfer);
 809                 rum_tx_free(data, 0);
 810                 usbd_xfer_set_priv(xfer, NULL);
 811
 812                 ifp->if_opackets++;
 813                 ifq_clr_oactive(&ifp->if_snd);
 814
 815                 /* FALLTHROUGH */
 816         case USB_ST_SETUP:
 817 tr_setup:
 818                 data = STAILQ_FIRST(&sc->tx_q);
 819                 if (data) {
 820                         STAILQ_REMOVE_HEAD(&sc->tx_q, next);
 821                         m = data->m;
 822
 823                         if (m->m_pkthdr.len > (int)(MCLBYTES + RT2573_TX_DESC_SIZE)) {
 824                                 DPRINTFN(0, "data overflow, %u bytes\n",
 825                                     m->m_pkthdr.len);
 826                                 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
 827                         }
 828                         pc = usbd_xfer_get_frame(xfer, 0);
 829                         usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
 830                         usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
 831                             m->m_pkthdr.len);
 832
 833                         vap = data->ni->ni_vap;
 834                         if (ieee80211_radiotap_active_vap(vap)) {
 835                                 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
 836
 837                                 tap->wt_flags = 0;
 838                                 tap->wt_rate = data->rate;
 839                                 tap->wt_antenna = sc->tx_ant;
 840
 841                                 ieee80211_radiotap_tx(vap, m);
 842                         }
 843
 844                         /* align end on a 4-bytes boundary */
 845                         len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
 846                         if ((len % 64) == 0)
 847                                 len += 4;
 848
 849                         DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
 850                             m->m_pkthdr.len, len);
 851
 852                         usbd_xfer_set_frame_len(xfer, 0, len);
 853                         usbd_xfer_set_priv(xfer, data);
 854
 855                         usbd_transfer_submit(xfer);
 856                 }
 857                 rum_start_locked(ifp);
 858                 break;
 859
 860         default:                        /* Error */
 861                 DPRINTFN(11, "transfer error, %s\n",
 862                     usbd_errstr(error));
 863
 864                 ifp->if_oerrors++;
 865                 data = usbd_xfer_get_priv(xfer);
 866                 if (data != NULL) {
 867                         rum_tx_free(data, error);
 868                         usbd_xfer_set_priv(xfer, NULL);
 869                 }
 870
 871                 if (error != USB_ERR_CANCELLED) {
 872                         if (error == USB_ERR_TIMEOUT)
 873                                 device_printf(sc->sc_dev, "device timeout\n");
 874
 875                         /*
 876                          * Try to clear stall first, also if other
 877                          * errors occur, hence clearing stall
 878                          * introduces a 50 ms delay:
 879                          */
 880                         usbd_xfer_set_stall(xfer);
 881                         goto tr_setup;
 882                 }
 883                 break;
 884         }
 885 }
 886
 887 static void
 888 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 889 {
 890         struct rum_softc *sc = usbd_xfer_softc(xfer);
 891         struct ifnet *ifp = sc->sc_ifp;
 892         struct ieee80211com *ic = ifp->if_l2com;
 893         struct ieee80211_node *ni;
 894         struct mbuf *m = NULL;
 895         struct usb_page_cache *pc;
 896         uint32_t flags;
 897         uint8_t rssi = 0;
 898         int len;
 899
 900         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 901
 902         switch (USB_GET_STATE(xfer)) {
 903         case USB_ST_TRANSFERRED:
 904
 905                 DPRINTFN(15, "rx done, actlen=%d\n", len);
 906
 907                 if (len < (int)(RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN)) {
 908                         DPRINTF("%s: xfer too short %d\n",
 909                             device_get_nameunit(sc->sc_dev), len);
 910                         ifp->if_ierrors++;
 911                         goto tr_setup;
 912                 }
 913
 914                 len -= RT2573_RX_DESC_SIZE;
 915                 pc = usbd_xfer_get_frame(xfer, 0);
 916                 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
 917
 918                 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
 919                 flags = le32toh(sc->sc_rx_desc.flags);
 920                 if (flags & RT2573_RX_CRC_ERROR) {
 921                         /*
 922                          * This should not happen since we did not
 923                          * request to receive those frames when we
 924                          * filled RUM_TXRX_CSR2:
 925                          */
 926                         DPRINTFN(5, "PHY or CRC error\n");
 927                         ifp->if_ierrors++;
 928                         goto tr_setup;
 929                 }
 930
 931                 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 932                 if (m == NULL) {
 933                         DPRINTF("could not allocate mbuf\n");
 934                         ifp->if_ierrors++;
 935                         goto tr_setup;
 936                 }
 937                 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
 938                     mtod(m, uint8_t *), len);
 939
 940                 /* finalize mbuf */
 941                 m->m_pkthdr.rcvif = ifp;
 942                 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
 943
 944                 if (ieee80211_radiotap_active(ic)) {
 945                         struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
 946
 947                         /* XXX read tsf */
 948                         tap->wr_flags = 0;
 949                         tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
 950                             (flags & RT2573_RX_OFDM) ?
 951                             IEEE80211_T_OFDM : IEEE80211_T_CCK);
 952                         tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
 953                         tap->wr_antnoise = RT2573_NOISE_FLOOR;
 954                         tap->wr_antenna = sc->rx_ant;
 955                 }
 956                 /* FALLTHROUGH */
 957         case USB_ST_SETUP:
 958 tr_setup:
 959                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 960                 usbd_transfer_submit(xfer);
 961
 962                 /*
 963                  * At the end of a USB callback it is always safe to unlock
 964                  * the private mutex of a device! That is why we do the
 965                  * "ieee80211_input" here, and not some lines up!
 966                  */
 967                 RUM_UNLOCK(sc);
 968                 if (m) {
 969                         ni = ieee80211_find_rxnode(ic,
 970                             mtod(m, struct ieee80211_frame_min *));
 971                         if (ni != NULL) {
 972                                 (void) ieee80211_input(ni, m, rssi,
 973                                     RT2573_NOISE_FLOOR);
 974                                 ieee80211_free_node(ni);
 975                         } else
 976                                 (void) ieee80211_input_all(ic, m, rssi,
 977                                     RT2573_NOISE_FLOOR);
 978                 }
 979                 if (!ifq_is_oactive(&ifp->if_snd) &&
 980                     !ifq_is_empty(&ifp->if_snd))
 981                         rum_start_locked(ifp);
 982                 RUM_LOCK(sc);
 983                 return;
 984
 985         default:                        /* Error */
 986                 if (error != USB_ERR_CANCELLED) {
 987                         /* try to clear stall first */
 988                         usbd_xfer_set_stall(xfer);
 989                         goto tr_setup;
 990                 }
 991                 return;
 992         }
 993 }
 994
 995 static uint8_t
 996 rum_plcp_signal(int rate)
 997 {
 998         switch (rate) {
 999         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1000         case 12:        return 0xb;
1001         case 18:        return 0xf;
1002         case 24:        return 0xa;
1003         case 36:        return 0xe;
1004         case 48:        return 0x9;
1005         case 72:        return 0xd;
1006         case 96:        return 0x8;
1007         case 108:       return 0xc;
1008
1009         /* CCK rates (NB: not IEEE std, device-specific) */
1010         case 2:         return 0x0;
1011         case 4:         return 0x1;
1012         case 11:        return 0x2;
1013         case 22:        return 0x3;
1014         }
1015         return 0xff;            /* XXX unsupported/unknown rate */
1016 }
1017
1018 static void
1019 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
1020     uint32_t flags, uint16_t xflags, int len, int rate)
1021 {
1022         struct ifnet *ifp = sc->sc_ifp;
1023         struct ieee80211com *ic = ifp->if_l2com;
1024         uint16_t plcp_length;
1025         int remainder;
1026
1027         desc->flags = htole32(flags);
1028         desc->flags |= htole32(RT2573_TX_VALID);
1029         desc->flags |= htole32(len << 16);
1030
1031         desc->xflags = htole16(xflags);
1032
1033         desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) |
1034             RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10));
1035
1036         /* setup PLCP fields */
1037         desc->plcp_signal  = rum_plcp_signal(rate);
1038         desc->plcp_service = 4;
1039
1040         len += IEEE80211_CRC_LEN;
1041         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1042                 desc->flags |= htole32(RT2573_TX_OFDM);
1043
1044                 plcp_length = len & 0xfff;
1045                 desc->plcp_length_hi = plcp_length >> 6;
1046                 desc->plcp_length_lo = plcp_length & 0x3f;
1047         } else {
1048                 plcp_length = (16 * len + rate - 1) / rate;
1049                 if (rate == 22) {
1050                         remainder = (16 * len) % 22;
1051                         if (remainder != 0 && remainder < 7)
1052                                 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1053                 }
1054                 desc->plcp_length_hi = plcp_length >> 8;
1055                 desc->plcp_length_lo = plcp_length & 0xff;
1056
1057                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1058                         desc->plcp_signal |= 0x08;
1059         }
1060 }
1061
1062 static int
1063 rum_sendprot(struct rum_softc *sc,
1064     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1065 {
1066         struct ieee80211com *ic = ni->ni_ic;
1067         const struct ieee80211_frame *wh;
1068         struct rum_tx_data *data;
1069         struct mbuf *mprot;
1070         int protrate, ackrate, pktlen, flags, isshort;
1071         uint16_t dur;
1072
1073         RUM_LOCK_ASSERT(sc, MA_OWNED);
1074         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1075             ("protection %d", prot));
1076
1077         wh = mtod(m, const struct ieee80211_frame *);
1078         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1079
1080         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1081         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1082
1083         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1084         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1085             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1086         flags = RT2573_TX_MORE_FRAG;
1087         if (prot == IEEE80211_PROT_RTSCTS) {
1088                 /* NB: CTS is the same size as an ACK */
1089                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1090                 flags |= RT2573_TX_NEED_ACK;
1091                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1092         } else {
1093                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1094         }
1095         if (mprot == NULL) {
1096                 /* XXX stat + msg */
1097                 return (ENOBUFS);
1098         }
1099         data = STAILQ_FIRST(&sc->tx_free);
1100         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1101         sc->tx_nfree--;
1102
1103         data->m = mprot;
1104         data->ni = ieee80211_ref_node(ni);
1105         data->rate = protrate;
1106         rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate);
1107
1108         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1109         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1110
1111         return 0;
1112 }
1113
1114 static int
1115 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1116 {
1117         struct ieee80211vap *vap = ni->ni_vap;
1118         struct ifnet *ifp = sc->sc_ifp;
1119         struct ieee80211com *ic = ifp->if_l2com;
1120         struct rum_tx_data *data;
1121         struct ieee80211_frame *wh;
1122         const struct ieee80211_txparam *tp;
1123         struct ieee80211_key *k;
1124         uint32_t flags = 0;
1125         uint16_t dur;
1126
1127         RUM_LOCK_ASSERT(sc, MA_OWNED);
1128
1129         data = STAILQ_FIRST(&sc->tx_free);
1130         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1131         sc->tx_nfree--;
1132
1133         wh = mtod(m0, struct ieee80211_frame *);
1134         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1135                 k = ieee80211_crypto_encap(ni, m0);
1136                 if (k == NULL) {
1137                         m_freem(m0);
1138                         return ENOBUFS;
1139                 }
1140                 wh = mtod(m0, struct ieee80211_frame *);
1141         }
1142
1143         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1144
1145         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1146                 flags |= RT2573_TX_NEED_ACK;
1147
1148                 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1149                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1150                 *(uint16_t *)wh->i_dur = htole16(dur);
1151
1152                 /* tell hardware to add timestamp for probe responses */
1153                 if ((wh->i_fc[0] &
1154                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1155                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1156                         flags |= RT2573_TX_TIMESTAMP;
1157         }
1158
1159         data->m = m0;
1160         data->ni = ni;
1161         data->rate = tp->mgmtrate;
1162
1163         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate);
1164
1165         DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1166             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1167
1168         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1169         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1170
1171         return (0);
1172 }
1173
1174 static int
1175 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1176     const struct ieee80211_bpf_params *params)
1177 {
1178         struct ieee80211com *ic = ni->ni_ic;
1179         struct rum_tx_data *data;
1180         uint32_t flags;
1181         int rate, error;
1182
1183         RUM_LOCK_ASSERT(sc, MA_OWNED);
1184         KASSERT(params != NULL, ("no raw xmit params"));
1185
1186         rate = params->ibp_rate0;
1187         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1188                 m_freem(m0);
1189                 return EINVAL;
1190         }
1191         flags = 0;
1192         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1193                 flags |= RT2573_TX_NEED_ACK;
1194         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1195                 error = rum_sendprot(sc, m0, ni,
1196                     params->ibp_flags & IEEE80211_BPF_RTS ?
1197                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1198                     rate);
1199                 if (error || sc->tx_nfree == 0) {
1200                         m_freem(m0);
1201                         return ENOBUFS;
1202                 }
1203                 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1204         }
1205
1206         data = STAILQ_FIRST(&sc->tx_free);
1207         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1208         sc->tx_nfree--;
1209
1210         data->m = m0;
1211         data->ni = ni;
1212         data->rate = rate;
1213
1214         /* XXX need to setup descriptor ourself */
1215         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1216
1217         DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1218             m0->m_pkthdr.len, rate);
1219
1220         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1221         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1222
1223         return 0;
1224 }
1225
1226 static int
1227 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1228 {
1229         struct ieee80211vap *vap = ni->ni_vap;
1230         struct ifnet *ifp = sc->sc_ifp;
1231         struct ieee80211com *ic = ifp->if_l2com;
1232         struct rum_tx_data *data;
1233         struct ieee80211_frame *wh;
1234         const struct ieee80211_txparam *tp;
1235         struct ieee80211_key *k;
1236         uint32_t flags = 0;
1237         uint16_t dur;
1238         int error, rate;
1239
1240 #if 0 /* XXX swildner: lock needed? */
1241         RUM_LOCK_ASSERT(sc, MA_OWNED);
1242 #endif
1243
1244         wh = mtod(m0, struct ieee80211_frame *);
1245
1246         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1247         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1248                 rate = tp->mcastrate;
1249         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1250                 rate = tp->ucastrate;
1251         else
1252                 rate = ni->ni_txrate;
1253
1254         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1255                 k = ieee80211_crypto_encap(ni, m0);
1256                 if (k == NULL) {
1257                         m_freem(m0);
1258                         return ENOBUFS;
1259                 }
1260
1261                 /* packet header may have moved, reset our local pointer */
1262                 wh = mtod(m0, struct ieee80211_frame *);
1263         }
1264
1265         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1266                 int prot = IEEE80211_PROT_NONE;
1267                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1268                         prot = IEEE80211_PROT_RTSCTS;
1269                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1270                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1271                         prot = ic->ic_protmode;
1272                 if (prot != IEEE80211_PROT_NONE) {
1273                         error = rum_sendprot(sc, m0, ni, prot, rate);
1274                         if (error || sc->tx_nfree == 0) {
1275                                 m_freem(m0);
1276                                 return ENOBUFS;
1277                         }
1278                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1279                 }
1280         }
1281
1282         data = STAILQ_FIRST(&sc->tx_free);
1283         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1284         sc->tx_nfree--;
1285
1286         data->m = m0;
1287         data->ni = ni;
1288         data->rate = rate;
1289
1290         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1291                 flags |= RT2573_TX_NEED_ACK;
1292                 flags |= RT2573_TX_MORE_FRAG;
1293
1294                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1295                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1296                 *(uint16_t *)wh->i_dur = htole16(dur);
1297         }
1298
1299         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1300
1301         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1302             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1303
1304         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1305         RUM_LOCK(sc);
1306         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1307         RUM_UNLOCK(sc);
1308
1309         return 0;
1310 }
1311
1312 static void
1313 rum_start_locked(struct ifnet *ifp)
1314 {
1315         struct rum_softc *sc = ifp->if_softc;
1316         struct ieee80211_node *ni;
1317         struct mbuf *m;
1318
1319         if ((ifp->if_flags & IFF_RUNNING) == 0) {
1320                 return;
1321         }
1322         for (;;) {
1323                 m = ifq_dequeue(&ifp->if_snd);
1324                 if (m == NULL)
1325                         break;
1326                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1327                         ifq_prepend(&ifp->if_snd, m);
1328                         ifq_set_oactive(&ifp->if_snd);
1329                         break;
1330                 }
1331                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1332                 if (rum_tx_data(sc, m, ni) != 0) {
1333                         ieee80211_free_node(ni);
1334                         ifp->if_oerrors++;
1335                         break;
1336                 }
1337         }
1338 }
1339
1340 static void
1341 rum_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
1342 {
1343         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
1344         rum_start_locked(ifp);
1345 }
1346
1347 static int
1348 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred)
1349 {
1350         struct rum_softc *sc = ifp->if_softc;
1351         struct ieee80211com *ic = ifp->if_l2com;
1352         struct ifreq *ifr = (struct ifreq *) data;
1353         int error;
1354         int startall = 0;
1355
1356         RUM_LOCK(sc);
1357         error = sc->sc_detached ? ENXIO : 0;
1358         RUM_UNLOCK(sc);
1359         if (error)
1360                 return (error);
1361
1362         switch (cmd) {
1363         case SIOCSIFFLAGS:
1364                 RUM_LOCK(sc);
1365                 if (ifp->if_flags & IFF_UP) {
1366                         if ((ifp->if_flags & IFF_RUNNING) == 0) {
1367                                 rum_init_locked(sc);
1368                                 startall = 1;
1369                         } else
1370                                 rum_setpromisc(sc);
1371                 } else {
1372                         if (ifp->if_flags & IFF_RUNNING)
1373                                 rum_stop(sc);
1374                 }
1375                 RUM_UNLOCK(sc);
1376                 if (startall)
1377                         ieee80211_start_all(ic);
1378                 break;
1379         case SIOCGIFMEDIA:
1380                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1381                 break;
1382         case SIOCGIFADDR:
1383                 error = ether_ioctl(ifp, cmd, data);
1384                 break;
1385         default:
1386                 error = EINVAL;
1387                 break;
1388         }
1389         return error;
1390 }
1391
1392 static void
1393 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1394 {
1395         struct usb_device_request req;
1396         usb_error_t error;
1397
1398         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1399         req.bRequest = RT2573_READ_EEPROM;
1400         USETW(req.wValue, 0);
1401         USETW(req.wIndex, addr);
1402         USETW(req.wLength, len);
1403
1404         error = rum_do_request(sc, &req, buf);
1405         if (error != 0) {
1406                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1407                     usbd_errstr(error));
1408         }
1409 }
1410
1411 static uint32_t
1412 rum_read(struct rum_softc *sc, uint16_t reg)
1413 {
1414         uint32_t val;
1415
1416         rum_read_multi(sc, reg, &val, sizeof val);
1417
1418         return le32toh(val);
1419 }
1420
1421 static void
1422 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1423 {
1424         struct usb_device_request req;
1425         usb_error_t error;
1426
1427         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1428         req.bRequest = RT2573_READ_MULTI_MAC;
1429         USETW(req.wValue, 0);
1430         USETW(req.wIndex, reg);
1431         USETW(req.wLength, len);
1432
1433         error = rum_do_request(sc, &req, buf);
1434         if (error != 0) {
1435                 device_printf(sc->sc_dev,
1436                     "could not multi read MAC register: %s\n",
1437                     usbd_errstr(error));
1438         }
1439 }
1440
1441 static usb_error_t
1442 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1443 {
1444         uint32_t tmp = htole32(val);
1445
1446         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1447 }
1448
1449 static usb_error_t
1450 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1451 {
1452         struct usb_device_request req;
1453         usb_error_t error;
1454         size_t offset;
1455
1456         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1457         req.bRequest = RT2573_WRITE_MULTI_MAC;
1458         USETW(req.wValue, 0);
1459
1460         /* write at most 64 bytes at a time */
1461         for (offset = 0; offset < len; offset += 64) {
1462                 USETW(req.wIndex, reg + offset);
1463                 USETW(req.wLength, MIN(len - offset, 64));
1464
1465                 error = rum_do_request(sc, &req, (char *)buf + offset);
1466                 if (error != 0) {
1467                         device_printf(sc->sc_dev,
1468                             "could not multi write MAC register: %s\n",
1469                             usbd_errstr(error));
1470                         return (error);
1471                 }
1472         }
1473
1474         return (USB_ERR_NORMAL_COMPLETION);
1475 }
1476
1477 static void
1478 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1479 {
1480         uint32_t tmp;
1481         int ntries;
1482
1483         DPRINTFN(2, "reg=0x%08x\n", reg);
1484
1485         for (ntries = 0; ntries < 100; ntries++) {
1486                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1487                         break;
1488                 if (rum_pause(sc, hz / 100))
1489                         break;
1490         }
1491         if (ntries == 100) {
1492                 device_printf(sc->sc_dev, "could not write to BBP\n");
1493                 return;
1494         }
1495
1496         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1497         rum_write(sc, RT2573_PHY_CSR3, tmp);
1498 }
1499
1500 static uint8_t
1501 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1502 {
1503         uint32_t val;
1504         int ntries;
1505
1506         DPRINTFN(2, "reg=0x%08x\n", reg);
1507
1508         for (ntries = 0; ntries < 100; ntries++) {
1509                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1510                         break;
1511                 if (rum_pause(sc, hz / 100))
1512                         break;
1513         }
1514         if (ntries == 100) {
1515                 device_printf(sc->sc_dev, "could not read BBP\n");
1516                 return 0;
1517         }
1518
1519         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1520         rum_write(sc, RT2573_PHY_CSR3, val);
1521
1522         for (ntries = 0; ntries < 100; ntries++) {
1523                 val = rum_read(sc, RT2573_PHY_CSR3);
1524                 if (!(val & RT2573_BBP_BUSY))
1525                         return val & 0xff;
1526                 if (rum_pause(sc, hz / 100))
1527                         break;
1528         }
1529
1530         device_printf(sc->sc_dev, "could not read BBP\n");
1531         return 0;
1532 }
1533
1534 static void
1535 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1536 {
1537         uint32_t tmp;
1538         int ntries;
1539
1540         for (ntries = 0; ntries < 100; ntries++) {
1541                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1542                         break;
1543                 if (rum_pause(sc, hz / 100))
1544                         break;
1545         }
1546         if (ntries == 100) {
1547                 device_printf(sc->sc_dev, "could not write to RF\n");
1548                 return;
1549         }
1550
1551         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1552             (reg & 3);
1553         rum_write(sc, RT2573_PHY_CSR4, tmp);
1554
1555         /* remember last written value in sc */
1556         sc->rf_regs[reg] = val;
1557
1558         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1559 }
1560
1561 static void
1562 rum_select_antenna(struct rum_softc *sc)
1563 {
1564         uint8_t bbp4, bbp77;
1565         uint32_t tmp;
1566
1567         bbp4  = rum_bbp_read(sc, 4);
1568         bbp77 = rum_bbp_read(sc, 77);
1569
1570         /* TBD */
1571
1572         /* make sure Rx is disabled before switching antenna */
1573         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1574         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1575
1576         rum_bbp_write(sc,  4, bbp4);
1577         rum_bbp_write(sc, 77, bbp77);
1578
1579         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1580 }
1581
1582 /*
1583  * Enable multi-rate retries for frames sent at OFDM rates.
1584  * In 802.11b/g mode, allow fallback to CCK rates.
1585  */
1586 static void
1587 rum_enable_mrr(struct rum_softc *sc)
1588 {
1589         struct ifnet *ifp = sc->sc_ifp;
1590         struct ieee80211com *ic = ifp->if_l2com;
1591         uint32_t tmp;
1592
1593         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1594
1595         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1596         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1597                 tmp |= RT2573_MRR_CCK_FALLBACK;
1598         tmp |= RT2573_MRR_ENABLED;
1599
1600         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1601 }
1602
1603 static void
1604 rum_set_txpreamble(struct rum_softc *sc)
1605 {
1606         struct ifnet *ifp = sc->sc_ifp;
1607         struct ieee80211com *ic = ifp->if_l2com;
1608         uint32_t tmp;
1609
1610         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1611
1612         tmp &= ~RT2573_SHORT_PREAMBLE;
1613         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1614                 tmp |= RT2573_SHORT_PREAMBLE;
1615
1616         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1617 }
1618
1619 static void
1620 rum_set_basicrates(struct rum_softc *sc)
1621 {
1622         struct ifnet *ifp = sc->sc_ifp;
1623         struct ieee80211com *ic = ifp->if_l2com;
1624
1625         /* update basic rate set */
1626         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1627                 /* 11b basic rates: 1, 2Mbps */
1628                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1629         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1630                 /* 11a basic rates: 6, 12, 24Mbps */
1631                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1632         } else {
1633                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1634                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1635         }
1636 }
1637
1638 /*
1639  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1640  * driver.
1641  */
1642 static void
1643 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1644 {
1645         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1646         uint32_t tmp;
1647
1648         /* update all BBP registers that depend on the band */
1649         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1650         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1651         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1652                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1653                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1654         }
1655         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1656             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1657                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1658         }
1659
1660         sc->bbp17 = bbp17;
1661         rum_bbp_write(sc,  17, bbp17);
1662         rum_bbp_write(sc,  96, bbp96);
1663         rum_bbp_write(sc, 104, bbp104);
1664
1665         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1666             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1667                 rum_bbp_write(sc, 75, 0x80);
1668                 rum_bbp_write(sc, 86, 0x80);
1669                 rum_bbp_write(sc, 88, 0x80);
1670         }
1671
1672         rum_bbp_write(sc, 35, bbp35);
1673         rum_bbp_write(sc, 97, bbp97);
1674         rum_bbp_write(sc, 98, bbp98);
1675
1676         tmp = rum_read(sc, RT2573_PHY_CSR0);
1677         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1678         if (IEEE80211_IS_CHAN_2GHZ(c))
1679                 tmp |= RT2573_PA_PE_2GHZ;
1680         else
1681                 tmp |= RT2573_PA_PE_5GHZ;
1682         rum_write(sc, RT2573_PHY_CSR0, tmp);
1683 }
1684
1685 static void
1686 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1687 {
1688         struct ifnet *ifp = sc->sc_ifp;
1689         struct ieee80211com *ic = ifp->if_l2com;
1690         const struct rfprog *rfprog;
1691         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1692         int8_t power;
1693         int i, chan;
1694
1695         chan = ieee80211_chan2ieee(ic, c);
1696         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1697                 return;
1698
1699         /* select the appropriate RF settings based on what EEPROM says */
1700         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1701                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1702
1703         /* find the settings for this channel (we know it exists) */
1704         for (i = 0; rfprog[i].chan != chan; i++);
1705
1706         power = sc->txpow[i];
1707         if (power < 0) {
1708                 bbp94 += power;
1709                 power = 0;
1710         } else if (power > 31) {
1711                 bbp94 += power - 31;
1712                 power = 31;
1713         }
1714
1715         /*
1716          * If we are switching from the 2GHz band to the 5GHz band or
1717          * vice-versa, BBP registers need to be reprogrammed.
1718          */
1719         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1720                 rum_select_band(sc, c);
1721                 rum_select_antenna(sc);
1722         }
1723         ic->ic_curchan = c;
1724
1725         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1726         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1727         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1728         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1729
1730         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1731         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1732         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1733         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1734
1735         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1736         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1737         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1738         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1739
1740         rum_pause(sc, hz / 100);
1741
1742         /* enable smart mode for MIMO-capable RFs */
1743         bbp3 = rum_bbp_read(sc, 3);
1744
1745         bbp3 &= ~RT2573_SMART_MODE;
1746         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1747                 bbp3 |= RT2573_SMART_MODE;
1748
1749         rum_bbp_write(sc, 3, bbp3);
1750
1751         if (bbp94 != RT2573_BBPR94_DEFAULT)
1752                 rum_bbp_write(sc, 94, bbp94);
1753
1754         /* give the chip some extra time to do the switchover */
1755         rum_pause(sc, hz / 100);
1756 }
1757
1758 /*
1759  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1760  * and HostAP operating modes.
1761  */
1762 static void
1763 rum_enable_tsf_sync(struct rum_softc *sc)
1764 {
1765         struct ifnet *ifp = sc->sc_ifp;
1766         struct ieee80211com *ic = ifp->if_l2com;
1767         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1768         uint32_t tmp;
1769
1770         if (vap->iv_opmode != IEEE80211_M_STA) {
1771                 /*
1772                  * Change default 16ms TBTT adjustment to 8ms.
1773                  * Must be done before enabling beacon generation.
1774                  */
1775                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1776         }
1777
1778         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1779
1780         /* set beacon interval (in 1/16ms unit) */
1781         tmp |= vap->iv_bss->ni_intval * 16;
1782
1783         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1784         if (vap->iv_opmode == IEEE80211_M_STA)
1785                 tmp |= RT2573_TSF_MODE(1);
1786         else
1787                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1788
1789         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1790 }
1791
1792 static void
1793 rum_enable_tsf(struct rum_softc *sc)
1794 {
1795         rum_write(sc, RT2573_TXRX_CSR9,
1796             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1797             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1798 }
1799
1800 static void
1801 rum_update_slot(struct ifnet *ifp)
1802 {
1803         struct rum_softc *sc = ifp->if_softc;
1804         struct ieee80211com *ic = ifp->if_l2com;
1805         uint8_t slottime;
1806         uint32_t tmp;
1807
1808         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1809
1810         tmp = rum_read(sc, RT2573_MAC_CSR9);
1811         tmp = (tmp & ~0xff) | slottime;
1812         rum_write(sc, RT2573_MAC_CSR9, tmp);
1813
1814         DPRINTF("setting slot time to %uus\n", slottime);
1815 }
1816
1817 static void
1818 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1819 {
1820         uint32_t tmp;
1821
1822         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1823         rum_write(sc, RT2573_MAC_CSR4, tmp);
1824
1825         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1826         rum_write(sc, RT2573_MAC_CSR5, tmp);
1827 }
1828
1829 static void
1830 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1831 {
1832         uint32_t tmp;
1833
1834         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1835         rum_write(sc, RT2573_MAC_CSR2, tmp);
1836
1837         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1838         rum_write(sc, RT2573_MAC_CSR3, tmp);
1839 }
1840
1841 static void
1842 rum_setpromisc(struct rum_softc *sc)
1843 {
1844         struct ifnet *ifp = sc->sc_ifp;
1845         uint32_t tmp;
1846
1847         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1848
1849         tmp &= ~RT2573_DROP_NOT_TO_ME;
1850         if (!(ifp->if_flags & IFF_PROMISC))
1851                 tmp |= RT2573_DROP_NOT_TO_ME;
1852
1853         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1854
1855         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1856             "entering" : "leaving");
1857 }
1858
1859 static void
1860 rum_update_promisc(struct ifnet *ifp)
1861 {
1862         struct rum_softc *sc = ifp->if_softc;
1863
1864         if ((ifp->if_flags & IFF_RUNNING) == 0)
1865                 return;
1866
1867         RUM_LOCK(sc);
1868         rum_setpromisc(sc);
1869         RUM_UNLOCK(sc);
1870 }
1871
1872 static void
1873 rum_update_mcast(struct ifnet *ifp)
1874 {
1875         static int warning_printed;
1876
1877         if (warning_printed == 0) {
1878                 if_printf(ifp, "need to implement %s\n", __func__);
1879                 warning_printed = 1;
1880         }
1881 }
1882
1883 static const char *
1884 rum_get_rf(int rev)
1885 {
1886         switch (rev) {
1887         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1888         case RT2573_RF_2528:    return "RT2528";
1889         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1890         case RT2573_RF_5226:    return "RT5226";
1891         default:                return "unknown";
1892         }
1893 }
1894
1895 static void
1896 rum_read_eeprom(struct rum_softc *sc)
1897 {
1898         uint16_t val;
1899 #ifdef RUM_DEBUG
1900         int i;
1901 #endif
1902
1903         /* read MAC address */
1904         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1905
1906         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1907         val = le16toh(val);
1908         sc->rf_rev =   (val >> 11) & 0x1f;
1909         sc->hw_radio = (val >> 10) & 0x1;
1910         sc->rx_ant =   (val >> 4)  & 0x3;
1911         sc->tx_ant =   (val >> 2)  & 0x3;
1912         sc->nb_ant =   val & 0x3;
1913
1914         DPRINTF("RF revision=%d\n", sc->rf_rev);
1915
1916         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1917         val = le16toh(val);
1918         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1919         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1920
1921         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1922             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1923
1924         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1925         val = le16toh(val);
1926         if ((val & 0xff) != 0xff)
1927                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1928
1929         /* Only [-10, 10] is valid */
1930         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1931                 sc->rssi_2ghz_corr = 0;
1932
1933         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1934         val = le16toh(val);
1935         if ((val & 0xff) != 0xff)
1936                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1937
1938         /* Only [-10, 10] is valid */
1939         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1940                 sc->rssi_5ghz_corr = 0;
1941
1942         if (sc->ext_2ghz_lna)
1943                 sc->rssi_2ghz_corr -= 14;
1944         if (sc->ext_5ghz_lna)
1945                 sc->rssi_5ghz_corr -= 14;
1946
1947         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1948             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1949
1950         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1951         val = le16toh(val);
1952         if ((val & 0xff) != 0xff)
1953                 sc->rffreq = val & 0xff;
1954
1955         DPRINTF("RF freq=%d\n", sc->rffreq);
1956
1957         /* read Tx power for all a/b/g channels */
1958         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1959         /* XXX default Tx power for 802.11a channels */
1960         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1961 #ifdef RUM_DEBUG
1962         for (i = 0; i < 14; i++)
1963                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1964 #endif
1965
1966         /* read default values for BBP registers */
1967         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1968 #ifdef RUM_DEBUG
1969         for (i = 0; i < 14; i++) {
1970                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1971                         continue;
1972                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1973                     sc->bbp_prom[i].val);
1974         }
1975 #endif
1976 }
1977
1978 static int
1979 rum_bbp_init(struct rum_softc *sc)
1980 {
1981         int i, ntries;
1982
1983         /* wait for BBP to be ready */
1984         for (ntries = 0; ntries < 100; ntries++) {
1985                 const uint8_t val = rum_bbp_read(sc, 0);
1986                 if (val != 0 && val != 0xff)
1987                         break;
1988                 if (rum_pause(sc, hz / 100))
1989                         break;
1990         }
1991         if (ntries == 100) {
1992                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1993                 return EIO;
1994         }
1995
1996         /* initialize BBP registers to default values */
1997         for (i = 0; i < N(rum_def_bbp); i++)
1998                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1999
2000         /* write vendor-specific BBP values (from EEPROM) */
2001         for (i = 0; i < 16; i++) {
2002                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
2003                         continue;
2004                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2005         }
2006
2007         return 0;
2008 }
2009
2010 static void
2011 rum_init_locked(struct rum_softc *sc)
2012 {
2013         struct ifnet *ifp = sc->sc_ifp;
2014         struct ieee80211com *ic = ifp->if_l2com;
2015         uint32_t tmp;
2016         usb_error_t error;
2017         int i, ntries;
2018
2019         RUM_LOCK_ASSERT(sc, MA_OWNED);
2020
2021         rum_stop(sc);
2022
2023         /* initialize MAC registers to default values */
2024         for (i = 0; i < N(rum_def_mac); i++)
2025                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
2026
2027         /* set host ready */
2028         rum_write(sc, RT2573_MAC_CSR1, 3);
2029         rum_write(sc, RT2573_MAC_CSR1, 0);
2030
2031         /* wait for BBP/RF to wakeup */
2032         for (ntries = 0; ntries < 100; ntries++) {
2033                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
2034                         break;
2035                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
2036                 if (rum_pause(sc, hz / 100))
2037                         break;
2038         }
2039         if (ntries == 100) {
2040                 device_printf(sc->sc_dev,
2041                     "timeout waiting for BBP/RF to wakeup\n");
2042                 goto fail;
2043         }
2044
2045         if ((error = rum_bbp_init(sc)) != 0)
2046                 goto fail;
2047
2048         /* select default channel */
2049         rum_select_band(sc, ic->ic_curchan);
2050         rum_select_antenna(sc);
2051         rum_set_chan(sc, ic->ic_curchan);
2052
2053         /* clear STA registers */
2054         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2055
2056         rum_set_macaddr(sc, IF_LLADDR(ifp));
2057
2058         /* initialize ASIC */
2059         rum_write(sc, RT2573_MAC_CSR1, 4);
2060
2061         /*
2062          * Allocate Tx and Rx xfer queues.
2063          */
2064         rum_setup_tx_list(sc);
2065
2066         /* update Rx filter */
2067         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2068
2069         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2070         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2071                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2072                        RT2573_DROP_ACKCTS;
2073                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2074                         tmp |= RT2573_DROP_TODS;
2075                 if (!(ifp->if_flags & IFF_PROMISC))
2076                         tmp |= RT2573_DROP_NOT_TO_ME;
2077         }
2078         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2079
2080         ifq_clr_oactive(&ifp->if_snd);
2081         ifp->if_flags |= IFF_RUNNING;
2082         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2083         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2084         return;
2085
2086 fail:   rum_stop(sc);
2087 #undef N
2088 }
2089
2090 static void
2091 rum_init(void *priv)
2092 {
2093         struct rum_softc *sc = priv;
2094         struct ifnet *ifp = sc->sc_ifp;
2095         struct ieee80211com *ic = ifp->if_l2com;
2096
2097         RUM_LOCK(sc);
2098         rum_init_locked(sc);
2099         RUM_UNLOCK(sc);
2100
2101         if (ifp->if_flags & IFF_RUNNING)
2102                 ieee80211_start_all(ic);                /* start all vap's */
2103 }
2104
2105 static void
2106 rum_stop(struct rum_softc *sc)
2107 {
2108         struct ifnet *ifp = sc->sc_ifp;
2109         uint32_t tmp;
2110
2111         RUM_LOCK_ASSERT(sc, MA_OWNED);
2112
2113         ifp->if_flags &= ~IFF_RUNNING;
2114         ifq_clr_oactive(&ifp->if_snd);
2115
2116         RUM_UNLOCK(sc);
2117
2118         /*
2119          * Drain the USB transfers, if not already drained:
2120          */
2121         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2122         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2123
2124         RUM_LOCK(sc);
2125
2126         rum_unsetup_tx_list(sc);
2127
2128         /* disable Rx */
2129         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2130         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2131
2132         /* reset ASIC */
2133         rum_write(sc, RT2573_MAC_CSR1, 3);
2134         rum_write(sc, RT2573_MAC_CSR1, 0);
2135 }
2136
2137 static void
2138 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2139 {
2140         struct usb_device_request req;
2141         uint16_t reg = RT2573_MCU_CODE_BASE;
2142         usb_error_t err;
2143
2144         /* copy firmware image into NIC */
2145         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2146                 err = rum_write(sc, reg, UGETDW(ucode));
2147                 if (err) {
2148                         /* firmware already loaded ? */
2149                         device_printf(sc->sc_dev, "Firmware load "
2150                             "failure! (ignored)\n");
2151                         break;
2152                 }
2153         }
2154
2155         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2156         req.bRequest = RT2573_MCU_CNTL;
2157         USETW(req.wValue, RT2573_MCU_RUN);
2158         USETW(req.wIndex, 0);
2159         USETW(req.wLength, 0);
2160
2161         err = rum_do_request(sc, &req, NULL);
2162         if (err != 0) {
2163                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2164                     usbd_errstr(err));
2165         }
2166
2167         /* give the chip some time to boot */
2168         rum_pause(sc, hz / 8);
2169 }
2170
2171 static void
2172 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2173 {
2174         struct ieee80211com *ic = vap->iv_ic;
2175         const struct ieee80211_txparam *tp;
2176         struct rum_tx_desc desc;
2177         struct mbuf *m0;
2178
2179         if (vap->iv_bss->ni_chan == IEEE80211_CHAN_ANYC)
2180                 return;
2181         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2182                 return;
2183
2184         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2185         if (m0 == NULL)
2186                 return;
2187
2188         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2189         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2190             m0->m_pkthdr.len, tp->mgmtrate);
2191
2192         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2193         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2194
2195         /* copy beacon header and payload into NIC memory */
2196         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2197             m0->m_pkthdr.len);
2198
2199         m_freem(m0);
2200 }
2201
2202 static int
2203 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2204     const struct ieee80211_bpf_params *params)
2205 {
2206         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2207         struct rum_softc *sc = ifp->if_softc;
2208
2209         RUM_LOCK(sc);
2210         /* prevent management frames from being sent if we're not ready */
2211         if (!(ifp->if_flags & IFF_RUNNING)) {
2212                 RUM_UNLOCK(sc);
2213                 m_freem(m);
2214                 ieee80211_free_node(ni);
2215                 return ENETDOWN;
2216         }
2217         if (sc->tx_nfree < RUM_TX_MINFREE) {
2218                 ifq_set_oactive(&ifp->if_snd);
2219                 RUM_UNLOCK(sc);
2220                 m_freem(m);
2221                 ieee80211_free_node(ni);
2222                 return EIO;
2223         }
2224
2225         ifp->if_opackets++;
2226
2227         if (params == NULL) {
2228                 /*
2229                  * Legacy path; interpret frame contents to decide
2230                  * precisely how to send the frame.
2231                  */
2232                 if (rum_tx_mgt(sc, m, ni) != 0)
2233                         goto bad;
2234         } else {
2235                 /*
2236                  * Caller supplied explicit parameters to use in
2237                  * sending the frame.
2238                  */
2239                 if (rum_tx_raw(sc, m, ni, params) != 0)
2240                         goto bad;
2241         }
2242         RUM_UNLOCK(sc);
2243
2244         return 0;
2245 bad:
2246         ifp->if_oerrors++;
2247         RUM_UNLOCK(sc);
2248         ieee80211_free_node(ni);
2249         return EIO;
2250 }
2251
2252 static void
2253 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2254 {
2255         struct ieee80211vap *vap = ni->ni_vap;
2256         struct rum_vap *rvp = RUM_VAP(vap);
2257
2258         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2259         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2260
2261         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2262 }
2263
2264 static void
2265 rum_ratectl_timeout(void *arg)
2266 {
2267         struct rum_vap *rvp = arg;
2268         struct ieee80211vap *vap = &rvp->vap;
2269         struct ieee80211com *ic = vap->iv_ic;
2270
2271         ieee80211_runtask(ic, &rvp->ratectl_task);
2272 }
2273
2274 static void
2275 rum_ratectl_task(void *arg, int pending)
2276 {
2277         struct rum_vap *rvp = arg;
2278         struct ieee80211vap *vap = &rvp->vap;
2279         struct ieee80211com *ic = vap->iv_ic;
2280         struct ifnet *ifp = ic->ic_ifp;
2281         struct rum_softc *sc = ifp->if_softc;
2282         struct ieee80211_node *ni;
2283         int ok, fail;
2284         int sum, retrycnt;
2285
2286         RUM_LOCK(sc);
2287         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2288         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2289
2290         ok = (le32toh(sc->sta[4]) >> 16) +      /* TX ok w/o retry */
2291             (le32toh(sc->sta[5]) & 0xffff);     /* TX ok w/ retry */
2292         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2293         sum = ok+fail;
2294         retrycnt = (le32toh(sc->sta[5]) & 0xffff) + fail;
2295
2296         ni = ieee80211_ref_node(vap->iv_bss);
2297         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2298         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2299         ieee80211_free_node(ni);
2300
2301         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2302
2303         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2304         RUM_UNLOCK(sc);
2305 }
2306
2307 static void
2308 rum_scan_start(struct ieee80211com *ic)
2309 {
2310         struct ifnet *ifp = ic->ic_ifp;
2311         struct rum_softc *sc = ifp->if_softc;
2312         uint32_t tmp;
2313
2314         RUM_LOCK(sc);
2315         /* abort TSF synchronization */
2316         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2317         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2318         rum_set_bssid(sc, ifp->if_broadcastaddr);
2319         RUM_UNLOCK(sc);
2320
2321 }
2322
2323 static void
2324 rum_scan_end(struct ieee80211com *ic)
2325 {
2326         struct rum_softc *sc = ic->ic_ifp->if_softc;
2327
2328         RUM_LOCK(sc);
2329         rum_enable_tsf_sync(sc);
2330         rum_set_bssid(sc, sc->sc_bssid);
2331         RUM_UNLOCK(sc);
2332
2333 }
2334
2335 static void
2336 rum_set_channel(struct ieee80211com *ic)
2337 {
2338         struct rum_softc *sc = ic->ic_ifp->if_softc;
2339
2340         RUM_LOCK(sc);
2341         rum_set_chan(sc, ic->ic_curchan);
2342         RUM_UNLOCK(sc);
2343 }
2344
2345 static int
2346 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2347 {
2348         struct ifnet *ifp = sc->sc_ifp;
2349         struct ieee80211com *ic = ifp->if_l2com;
2350         int lna, agc, rssi;
2351
2352         lna = (raw >> 5) & 0x3;
2353         agc = raw & 0x1f;
2354
2355         if (lna == 0) {
2356                 /*
2357                  * No RSSI mapping
2358                  *
2359                  * NB: Since RSSI is relative to noise floor, -1 is
2360                  *     adequate for caller to know error happened.
2361                  */
2362                 return -1;
2363         }
2364
2365         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2366
2367         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2368                 rssi += sc->rssi_2ghz_corr;
2369
2370                 if (lna == 1)
2371                         rssi -= 64;
2372                 else if (lna == 2)
2373                         rssi -= 74;
2374                 else if (lna == 3)
2375                         rssi -= 90;
2376         } else {
2377                 rssi += sc->rssi_5ghz_corr;
2378
2379                 if (!sc->ext_5ghz_lna && lna != 1)
2380                         rssi += 4;
2381
2382                 if (lna == 1)
2383                         rssi -= 64;
2384                 else if (lna == 2)
2385                         rssi -= 86;
2386                 else if (lna == 3)
2387                         rssi -= 100;
2388         }
2389         return rssi;
2390 }
2391
2392 static int
2393 rum_pause(struct rum_softc *sc, int timeout)
2394 {
2395         zsleep(sc, &wlan_global_serializer, 0, "rumpause", timeout + 1);
2396         return (0);
2397 }
2398
2399 static device_method_t rum_methods[] = {
2400         /* Device interface */
2401         DEVMETHOD(device_probe,         rum_match),
2402         DEVMETHOD(device_attach,        rum_attach),
2403         DEVMETHOD(device_detach,        rum_detach),
2404         DEVMETHOD_END
2405 };
2406
2407 static driver_t rum_driver = {
2408         .name = "rum",
2409         .methods = rum_methods,
2410         .size = sizeof(struct rum_softc),
2411 };
2412
2413 static devclass_t rum_devclass;
2414
2415 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0);
2416 MODULE_DEPEND(rum, wlan, 1, 1, 1);
2417 MODULE_DEPEND(rum, usb, 1, 1, 1);
2418 MODULE_VERSION(rum, 1);