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