sys/dev/usb/wlan/if_rum.c

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr>
   5  * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org>
   6  * Copyright (c) 2007-2008 Hans Petter Selasky <hselasky@FreeBSD.org>
   7  *
   8  * Permission to use, copy, modify, and distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  */
  20
  21 #include <sys/cdefs.h>
  22 __FBSDID("$FreeBSD$");
  23
  24 /*-
  25  * Ralink Technology RT2501USB/RT2601USB chipset driver
  26  * http://www.ralinktech.com.tw/
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/sockio.h>
  31 #include <sys/sysctl.h>
  32 #include <sys/lock.h>
  33 #include <sys/mutex.h>
  34 #include <sys/mbuf.h>
  35 #include <sys/kernel.h>
  36 #include <sys/socket.h>
  37 #include <sys/systm.h>
  38 #include <sys/malloc.h>
  39 #include <sys/module.h>
  40 #include <sys/bus.h>
  41 #include <sys/endian.h>
  42 #include <sys/kdb.h>
  43
  44 #include <machine/bus.h>
  45 #include <machine/resource.h>
  46 #include <sys/rman.h>
  47
  48 #include <net/bpf.h>
  49 #include <net/if.h>
  50 #include <net/if_arp.h>
  51 #include <net/ethernet.h>
  52 #include <net/if_dl.h>
  53 #include <net/if_media.h>
  54 #include <net/if_types.h>
  55
  56 #ifdef INET
  57 #include <netinet/in.h>
  58 #include <netinet/in_systm.h>
  59 #include <netinet/in_var.h>
  60 #include <netinet/if_ether.h>
  61 #include <netinet/ip.h>
  62 #endif
  63
  64 #include <net80211/ieee80211_var.h>
  65 #include <net80211/ieee80211_regdomain.h>
  66 #include <net80211/ieee80211_radiotap.h>
  67 #include <net80211/ieee80211_ratectl.h>
  68
  69 #include <dev/usb/usb.h>
  70 #include <dev/usb/usbdi.h>
  71 #include "usbdevs.h"
  72
  73 #define USB_DEBUG_VAR rum_debug
  74 #include <dev/usb/usb_debug.h>
  75
  76 #include <dev/usb/wlan/if_rumreg.h>
  77 #include <dev/usb/wlan/if_rumvar.h>
  78 #include <dev/usb/wlan/if_rumfw.h>
  79
  80 #ifdef USB_DEBUG
  81 static int rum_debug = 0;
  82
  83 static SYSCTL_NODE(_hw_usb, OID_AUTO, rum, CTLFLAG_RW, 0, "USB rum");
  84 SYSCTL_INT(_hw_usb_rum, OID_AUTO, debug, CTLFLAG_RW, &rum_debug, 0,
  85     "Debug level");
  86 #endif
  87
  88 #define N(a)    ((int)(sizeof (a) / sizeof ((a)[0])))
  89
  90 static const STRUCT_USB_HOST_ID rum_devs[] = {
  91 #define RUM_DEV(v,p)  { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
  92     RUM_DEV(ABOCOM, HWU54DM),
  93     RUM_DEV(ABOCOM, RT2573_2),
  94     RUM_DEV(ABOCOM, RT2573_3),
  95     RUM_DEV(ABOCOM, RT2573_4),
  96     RUM_DEV(ABOCOM, WUG2700),
  97     RUM_DEV(AMIT, CGWLUSB2GO),
  98     RUM_DEV(ASUS, RT2573_1),
  99     RUM_DEV(ASUS, RT2573_2),
 100     RUM_DEV(BELKIN, F5D7050A),
 101     RUM_DEV(BELKIN, F5D9050V3),
 102     RUM_DEV(CISCOLINKSYS, WUSB54GC),
 103     RUM_DEV(CISCOLINKSYS, WUSB54GR),
 104     RUM_DEV(CONCEPTRONIC2, C54RU2),
 105     RUM_DEV(COREGA, CGWLUSB2GL),
 106     RUM_DEV(COREGA, CGWLUSB2GPX),
 107     RUM_DEV(DICKSMITH, CWD854F),
 108     RUM_DEV(DICKSMITH, RT2573),
 109     RUM_DEV(EDIMAX, EW7318USG),
 110     RUM_DEV(DLINK2, DWLG122C1),
 111     RUM_DEV(DLINK2, WUA1340),
 112     RUM_DEV(DLINK2, DWA111),
 113     RUM_DEV(DLINK2, DWA110),
 114     RUM_DEV(GIGABYTE, GNWB01GS),
 115     RUM_DEV(GIGABYTE, GNWI05GS),
 116     RUM_DEV(GIGASET, RT2573),
 117     RUM_DEV(GOODWAY, RT2573),
 118     RUM_DEV(GUILLEMOT, HWGUSB254LB),
 119     RUM_DEV(GUILLEMOT, HWGUSB254V2AP),
 120     RUM_DEV(HUAWEI3COM, WUB320G),
 121     RUM_DEV(MELCO, G54HP),
 122     RUM_DEV(MELCO, SG54HP),
 123     RUM_DEV(MELCO, SG54HG),
 124     RUM_DEV(MELCO, WLIUCG),
 125     RUM_DEV(MELCO, WLRUCG),
 126     RUM_DEV(MELCO, WLRUCGAOSS),
 127     RUM_DEV(MSI, RT2573_1),
 128     RUM_DEV(MSI, RT2573_2),
 129     RUM_DEV(MSI, RT2573_3),
 130     RUM_DEV(MSI, RT2573_4),
 131     RUM_DEV(NOVATECH, RT2573),
 132     RUM_DEV(PLANEX2, GWUS54HP),
 133     RUM_DEV(PLANEX2, GWUS54MINI2),
 134     RUM_DEV(PLANEX2, GWUSMM),
 135     RUM_DEV(QCOM, RT2573),
 136     RUM_DEV(QCOM, RT2573_2),
 137     RUM_DEV(QCOM, RT2573_3),
 138     RUM_DEV(RALINK, RT2573),
 139     RUM_DEV(RALINK, RT2573_2),
 140     RUM_DEV(RALINK, RT2671),
 141     RUM_DEV(SITECOMEU, WL113R2),
 142     RUM_DEV(SITECOMEU, WL172),
 143     RUM_DEV(SPARKLAN, RT2573),
 144     RUM_DEV(SURECOM, RT2573),
 145 #undef RUM_DEV
 146 };
 147
 148 static device_probe_t rum_match;
 149 static device_attach_t rum_attach;
 150 static device_detach_t rum_detach;
 151
 152 static usb_callback_t rum_bulk_read_callback;
 153 static usb_callback_t rum_bulk_write_callback;
 154
 155 static usb_error_t      rum_do_request(struct rum_softc *sc,
 156                             struct usb_device_request *req, void *data);
 157 static struct ieee80211vap *rum_vap_create(struct ieee80211com *,
 158                             const char [IFNAMSIZ], int, enum ieee80211_opmode,
 159                             int, const uint8_t [IEEE80211_ADDR_LEN],
 160                             const uint8_t [IEEE80211_ADDR_LEN]);
 161 static void             rum_vap_delete(struct ieee80211vap *);
 162 static void             rum_tx_free(struct rum_tx_data *, int);
 163 static void             rum_setup_tx_list(struct rum_softc *);
 164 static void             rum_unsetup_tx_list(struct rum_softc *);
 165 static int              rum_newstate(struct ieee80211vap *,
 166                             enum ieee80211_state, int);
 167 static void             rum_setup_tx_desc(struct rum_softc *,
 168                             struct rum_tx_desc *, uint32_t, uint16_t, int,
 169                             int);
 170 static int              rum_tx_mgt(struct rum_softc *, struct mbuf *,
 171                             struct ieee80211_node *);
 172 static int              rum_tx_raw(struct rum_softc *, struct mbuf *,
 173                             struct ieee80211_node *,
 174                             const struct ieee80211_bpf_params *);
 175 static int              rum_tx_data(struct rum_softc *, struct mbuf *,
 176                             struct ieee80211_node *);
 177 static void             rum_start(struct ifnet *);
 178 static int              rum_ioctl(struct ifnet *, u_long, caddr_t);
 179 static void             rum_eeprom_read(struct rum_softc *, uint16_t, void *,
 180                             int);
 181 static uint32_t         rum_read(struct rum_softc *, uint16_t);
 182 static void             rum_read_multi(struct rum_softc *, uint16_t, void *,
 183                             int);
 184 static usb_error_t      rum_write(struct rum_softc *, uint16_t, uint32_t);
 185 static usb_error_t      rum_write_multi(struct rum_softc *, uint16_t, void *,
 186                             size_t);
 187 static void             rum_bbp_write(struct rum_softc *, uint8_t, uint8_t);
 188 static uint8_t          rum_bbp_read(struct rum_softc *, uint8_t);
 189 static void             rum_rf_write(struct rum_softc *, uint8_t, uint32_t);
 190 static void             rum_select_antenna(struct rum_softc *);
 191 static void             rum_enable_mrr(struct rum_softc *);
 192 static void             rum_set_txpreamble(struct rum_softc *);
 193 static void             rum_set_basicrates(struct rum_softc *);
 194 static void             rum_select_band(struct rum_softc *,
 195                             struct ieee80211_channel *);
 196 static void             rum_set_chan(struct rum_softc *,
 197                             struct ieee80211_channel *);
 198 static void             rum_enable_tsf_sync(struct rum_softc *);
 199 static void             rum_enable_tsf(struct rum_softc *);
 200 static void             rum_update_slot(struct ifnet *);
 201 static void             rum_set_bssid(struct rum_softc *, const uint8_t *);
 202 static void             rum_set_macaddr(struct rum_softc *, const uint8_t *);
 203 static void             rum_update_mcast(struct ifnet *);
 204 static void             rum_update_promisc(struct ifnet *);
 205 static void             rum_setpromisc(struct rum_softc *);
 206 static const char       *rum_get_rf(int);
 207 static void             rum_read_eeprom(struct rum_softc *);
 208 static int              rum_bbp_init(struct rum_softc *);
 209 static void             rum_init_locked(struct rum_softc *);
 210 static void             rum_init(void *);
 211 static void             rum_stop(struct rum_softc *);
 212 static void             rum_load_microcode(struct rum_softc *, const uint8_t *,
 213                             size_t);
 214 static void             rum_prepare_beacon(struct rum_softc *,
 215                             struct ieee80211vap *);
 216 static int              rum_raw_xmit(struct ieee80211_node *, struct mbuf *,
 217                             const struct ieee80211_bpf_params *);
 218 static void             rum_scan_start(struct ieee80211com *);
 219 static void             rum_scan_end(struct ieee80211com *);
 220 static void             rum_set_channel(struct ieee80211com *);
 221 static int              rum_get_rssi(struct rum_softc *, uint8_t);
 222 static void             rum_ratectl_start(struct rum_softc *,
 223                             struct ieee80211_node *);
 224 static void             rum_ratectl_timeout(void *);
 225 static void             rum_ratectl_task(void *, int);
 226 static int              rum_pause(struct rum_softc *, int);
 227
 228 static const struct {
 229         uint32_t        reg;
 230         uint32_t        val;
 231 } rum_def_mac[] = {
 232         { RT2573_TXRX_CSR0,  0x025fb032 },
 233         { RT2573_TXRX_CSR1,  0x9eaa9eaf },
 234         { RT2573_TXRX_CSR2,  0x8a8b8c8d },
 235         { RT2573_TXRX_CSR3,  0x00858687 },
 236         { RT2573_TXRX_CSR7,  0x2e31353b },
 237         { RT2573_TXRX_CSR8,  0x2a2a2a2c },
 238         { RT2573_TXRX_CSR15, 0x0000000f },
 239         { RT2573_MAC_CSR6,   0x00000fff },
 240         { RT2573_MAC_CSR8,   0x016c030a },
 241         { RT2573_MAC_CSR10,  0x00000718 },
 242         { RT2573_MAC_CSR12,  0x00000004 },
 243         { RT2573_MAC_CSR13,  0x00007f00 },
 244         { RT2573_SEC_CSR0,   0x00000000 },
 245         { RT2573_SEC_CSR1,   0x00000000 },
 246         { RT2573_SEC_CSR5,   0x00000000 },
 247         { RT2573_PHY_CSR1,   0x000023b0 },
 248         { RT2573_PHY_CSR5,   0x00040a06 },
 249         { RT2573_PHY_CSR6,   0x00080606 },
 250         { RT2573_PHY_CSR7,   0x00000408 },
 251         { RT2573_AIFSN_CSR,  0x00002273 },
 252         { RT2573_CWMIN_CSR,  0x00002344 },
 253         { RT2573_CWMAX_CSR,  0x000034aa }
 254 };
 255
 256 static const struct {
 257         uint8_t reg;
 258         uint8_t val;
 259 } rum_def_bbp[] = {
 260         {   3, 0x80 },
 261         {  15, 0x30 },
 262         {  17, 0x20 },
 263         {  21, 0xc8 },
 264         {  22, 0x38 },
 265         {  23, 0x06 },
 266         {  24, 0xfe },
 267         {  25, 0x0a },
 268         {  26, 0x0d },
 269         {  32, 0x0b },
 270         {  34, 0x12 },
 271         {  37, 0x07 },
 272         {  39, 0xf8 },
 273         {  41, 0x60 },
 274         {  53, 0x10 },
 275         {  54, 0x18 },
 276         {  60, 0x10 },
 277         {  61, 0x04 },
 278         {  62, 0x04 },
 279         {  75, 0xfe },
 280         {  86, 0xfe },
 281         {  88, 0xfe },
 282         {  90, 0x0f },
 283         {  99, 0x00 },
 284         { 102, 0x16 },
 285         { 107, 0x04 }
 286 };
 287
 288 static const struct rfprog {
 289         uint8_t         chan;
 290         uint32_t        r1, r2, r3, r4;
 291 }  rum_rf5226[] = {
 292         {   1, 0x00b03, 0x001e1, 0x1a014, 0x30282 },
 293         {   2, 0x00b03, 0x001e1, 0x1a014, 0x30287 },
 294         {   3, 0x00b03, 0x001e2, 0x1a014, 0x30282 },
 295         {   4, 0x00b03, 0x001e2, 0x1a014, 0x30287 },
 296         {   5, 0x00b03, 0x001e3, 0x1a014, 0x30282 },
 297         {   6, 0x00b03, 0x001e3, 0x1a014, 0x30287 },
 298         {   7, 0x00b03, 0x001e4, 0x1a014, 0x30282 },
 299         {   8, 0x00b03, 0x001e4, 0x1a014, 0x30287 },
 300         {   9, 0x00b03, 0x001e5, 0x1a014, 0x30282 },
 301         {  10, 0x00b03, 0x001e5, 0x1a014, 0x30287 },
 302         {  11, 0x00b03, 0x001e6, 0x1a014, 0x30282 },
 303         {  12, 0x00b03, 0x001e6, 0x1a014, 0x30287 },
 304         {  13, 0x00b03, 0x001e7, 0x1a014, 0x30282 },
 305         {  14, 0x00b03, 0x001e8, 0x1a014, 0x30284 },
 306
 307         {  34, 0x00b03, 0x20266, 0x36014, 0x30282 },
 308         {  38, 0x00b03, 0x20267, 0x36014, 0x30284 },
 309         {  42, 0x00b03, 0x20268, 0x36014, 0x30286 },
 310         {  46, 0x00b03, 0x20269, 0x36014, 0x30288 },
 311
 312         {  36, 0x00b03, 0x00266, 0x26014, 0x30288 },
 313         {  40, 0x00b03, 0x00268, 0x26014, 0x30280 },
 314         {  44, 0x00b03, 0x00269, 0x26014, 0x30282 },
 315         {  48, 0x00b03, 0x0026a, 0x26014, 0x30284 },
 316         {  52, 0x00b03, 0x0026b, 0x26014, 0x30286 },
 317         {  56, 0x00b03, 0x0026c, 0x26014, 0x30288 },
 318         {  60, 0x00b03, 0x0026e, 0x26014, 0x30280 },
 319         {  64, 0x00b03, 0x0026f, 0x26014, 0x30282 },
 320
 321         { 100, 0x00b03, 0x0028a, 0x2e014, 0x30280 },
 322         { 104, 0x00b03, 0x0028b, 0x2e014, 0x30282 },
 323         { 108, 0x00b03, 0x0028c, 0x2e014, 0x30284 },
 324         { 112, 0x00b03, 0x0028d, 0x2e014, 0x30286 },
 325         { 116, 0x00b03, 0x0028e, 0x2e014, 0x30288 },
 326         { 120, 0x00b03, 0x002a0, 0x2e014, 0x30280 },
 327         { 124, 0x00b03, 0x002a1, 0x2e014, 0x30282 },
 328         { 128, 0x00b03, 0x002a2, 0x2e014, 0x30284 },
 329         { 132, 0x00b03, 0x002a3, 0x2e014, 0x30286 },
 330         { 136, 0x00b03, 0x002a4, 0x2e014, 0x30288 },
 331         { 140, 0x00b03, 0x002a6, 0x2e014, 0x30280 },
 332
 333         { 149, 0x00b03, 0x002a8, 0x2e014, 0x30287 },
 334         { 153, 0x00b03, 0x002a9, 0x2e014, 0x30289 },
 335         { 157, 0x00b03, 0x002ab, 0x2e014, 0x30281 },
 336         { 161, 0x00b03, 0x002ac, 0x2e014, 0x30283 },
 337         { 165, 0x00b03, 0x002ad, 0x2e014, 0x30285 }
 338 }, rum_rf5225[] = {
 339         {   1, 0x00b33, 0x011e1, 0x1a014, 0x30282 },
 340         {   2, 0x00b33, 0x011e1, 0x1a014, 0x30287 },
 341         {   3, 0x00b33, 0x011e2, 0x1a014, 0x30282 },
 342         {   4, 0x00b33, 0x011e2, 0x1a014, 0x30287 },
 343         {   5, 0x00b33, 0x011e3, 0x1a014, 0x30282 },
 344         {   6, 0x00b33, 0x011e3, 0x1a014, 0x30287 },
 345         {   7, 0x00b33, 0x011e4, 0x1a014, 0x30282 },
 346         {   8, 0x00b33, 0x011e4, 0x1a014, 0x30287 },
 347         {   9, 0x00b33, 0x011e5, 0x1a014, 0x30282 },
 348         {  10, 0x00b33, 0x011e5, 0x1a014, 0x30287 },
 349         {  11, 0x00b33, 0x011e6, 0x1a014, 0x30282 },
 350         {  12, 0x00b33, 0x011e6, 0x1a014, 0x30287 },
 351         {  13, 0x00b33, 0x011e7, 0x1a014, 0x30282 },
 352         {  14, 0x00b33, 0x011e8, 0x1a014, 0x30284 },
 353
 354         {  34, 0x00b33, 0x01266, 0x26014, 0x30282 },
 355         {  38, 0x00b33, 0x01267, 0x26014, 0x30284 },
 356         {  42, 0x00b33, 0x01268, 0x26014, 0x30286 },
 357         {  46, 0x00b33, 0x01269, 0x26014, 0x30288 },
 358
 359         {  36, 0x00b33, 0x01266, 0x26014, 0x30288 },
 360         {  40, 0x00b33, 0x01268, 0x26014, 0x30280 },
 361         {  44, 0x00b33, 0x01269, 0x26014, 0x30282 },
 362         {  48, 0x00b33, 0x0126a, 0x26014, 0x30284 },
 363         {  52, 0x00b33, 0x0126b, 0x26014, 0x30286 },
 364         {  56, 0x00b33, 0x0126c, 0x26014, 0x30288 },
 365         {  60, 0x00b33, 0x0126e, 0x26014, 0x30280 },
 366         {  64, 0x00b33, 0x0126f, 0x26014, 0x30282 },
 367
 368         { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 },
 369         { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 },
 370         { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 },
 371         { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 },
 372         { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 },
 373         { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 },
 374         { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 },
 375         { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 },
 376         { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 },
 377         { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 },
 378         { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 },
 379
 380         { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 },
 381         { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 },
 382         { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 },
 383         { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 },
 384         { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 }
 385 };
 386
 387 static const struct usb_config rum_config[RUM_N_TRANSFER] = {
 388         [RUM_BULK_WR] = {
 389                 .type = UE_BULK,
 390                 .endpoint = UE_ADDR_ANY,
 391                 .direction = UE_DIR_OUT,
 392                 .bufsize = (MCLBYTES + RT2573_TX_DESC_SIZE + 8),
 393                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 394                 .callback = rum_bulk_write_callback,
 395                 .timeout = 5000,        /* ms */
 396         },
 397         [RUM_BULK_RD] = {
 398                 .type = UE_BULK,
 399                 .endpoint = UE_ADDR_ANY,
 400                 .direction = UE_DIR_IN,
 401                 .bufsize = (MCLBYTES + RT2573_RX_DESC_SIZE),
 402                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 403                 .callback = rum_bulk_read_callback,
 404         },
 405 };
 406
 407 static int
 408 rum_match(device_t self)
 409 {
 410         struct usb_attach_arg *uaa = device_get_ivars(self);
 411
 412         if (uaa->usb_mode != USB_MODE_HOST)
 413                 return (ENXIO);
 414         if (uaa->info.bConfigIndex != 0)
 415                 return (ENXIO);
 416         if (uaa->info.bIfaceIndex != RT2573_IFACE_INDEX)
 417                 return (ENXIO);
 418
 419         return (usbd_lookup_id_by_uaa(rum_devs, sizeof(rum_devs), uaa));
 420 }
 421
 422 static int
 423 rum_attach(device_t self)
 424 {
 425         struct usb_attach_arg *uaa = device_get_ivars(self);
 426         struct rum_softc *sc = device_get_softc(self);
 427         struct ieee80211com *ic;
 428         struct ifnet *ifp;
 429         uint8_t iface_index, bands;
 430         uint32_t tmp;
 431         int error, ntries;
 432
 433         device_set_usb_desc(self);
 434         sc->sc_udev = uaa->device;
 435         sc->sc_dev = self;
 436
 437         mtx_init(&sc->sc_mtx, device_get_nameunit(self),
 438             MTX_NETWORK_LOCK, MTX_DEF);
 439
 440         iface_index = RT2573_IFACE_INDEX;
 441         error = usbd_transfer_setup(uaa->device, &iface_index,
 442             sc->sc_xfer, rum_config, RUM_N_TRANSFER, sc, &sc->sc_mtx);
 443         if (error) {
 444                 device_printf(self, "could not allocate USB transfers, "
 445                     "err=%s\n", usbd_errstr(error));
 446                 goto detach;
 447         }
 448
 449         RUM_LOCK(sc);
 450         /* retrieve RT2573 rev. no */
 451         for (ntries = 0; ntries < 100; ntries++) {
 452                 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0)
 453                         break;
 454                 if (rum_pause(sc, hz / 100))
 455                         break;
 456         }
 457         if (ntries == 100) {
 458                 device_printf(sc->sc_dev, "timeout waiting for chip to settle\n");
 459                 RUM_UNLOCK(sc);
 460                 goto detach;
 461         }
 462
 463         /* retrieve MAC address and various other things from EEPROM */
 464         rum_read_eeprom(sc);
 465
 466         device_printf(sc->sc_dev, "MAC/BBP RT2573 (rev 0x%05x), RF %s\n",
 467             tmp, rum_get_rf(sc->rf_rev));
 468
 469         rum_load_microcode(sc, rt2573_ucode, sizeof(rt2573_ucode));
 470         RUM_UNLOCK(sc);
 471
 472         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 473         if (ifp == NULL) {
 474                 device_printf(sc->sc_dev, "can not if_alloc()\n");
 475                 goto detach;
 476         }
 477         ic = ifp->if_l2com;
 478
 479         ifp->if_softc = sc;
 480         if_initname(ifp, "rum", device_get_unit(sc->sc_dev));
 481         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 482         ifp->if_init = rum_init;
 483         ifp->if_ioctl = rum_ioctl;
 484         ifp->if_start = rum_start;
 485         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 486         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 487         IFQ_SET_READY(&ifp->if_snd);
 488
 489         ic->ic_ifp = ifp;
 490         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 491
 492         /* set device capabilities */
 493         ic->ic_caps =
 494               IEEE80211_C_STA           /* station mode supported */
 495             | IEEE80211_C_IBSS          /* IBSS mode supported */
 496             | IEEE80211_C_MONITOR       /* monitor mode supported */
 497             | IEEE80211_C_HOSTAP        /* HostAp mode supported */
 498             | IEEE80211_C_TXPMGT        /* tx power management */
 499             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 500             | IEEE80211_C_SHSLOT        /* short slot time supported */
 501             | IEEE80211_C_BGSCAN        /* bg scanning supported */
 502             | IEEE80211_C_WPA           /* 802.11i */
 503             ;
 504
 505         bands = 0;
 506         setbit(&bands, IEEE80211_MODE_11B);
 507         setbit(&bands, IEEE80211_MODE_11G);
 508         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226)
 509                 setbit(&bands, IEEE80211_MODE_11A);
 510         ieee80211_init_channels(ic, NULL, &bands);
 511
 512         ieee80211_ifattach(ic, sc->sc_bssid);
 513         ic->ic_update_promisc = rum_update_promisc;
 514         ic->ic_raw_xmit = rum_raw_xmit;
 515         ic->ic_scan_start = rum_scan_start;
 516         ic->ic_scan_end = rum_scan_end;
 517         ic->ic_set_channel = rum_set_channel;
 518
 519         ic->ic_vap_create = rum_vap_create;
 520         ic->ic_vap_delete = rum_vap_delete;
 521         ic->ic_update_mcast = rum_update_mcast;
 522
 523         ieee80211_radiotap_attach(ic,
 524             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 525                 RT2573_TX_RADIOTAP_PRESENT,
 526             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 527                 RT2573_RX_RADIOTAP_PRESENT);
 528
 529         if (bootverbose)
 530                 ieee80211_announce(ic);
 531
 532         return (0);
 533
 534 detach:
 535         rum_detach(self);
 536         return (ENXIO);                 /* failure */
 537 }
 538
 539 static int
 540 rum_detach(device_t self)
 541 {
 542         struct rum_softc *sc = device_get_softc(self);
 543         struct ifnet *ifp = sc->sc_ifp;
 544         struct ieee80211com *ic;
 545
 546         /* Prevent further ioctls */
 547         RUM_LOCK(sc);
 548         sc->sc_detached = 1;
 549         RUM_UNLOCK(sc);
 550
 551         /* stop all USB transfers */
 552         usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
 553
 554         /* free TX list, if any */
 555         RUM_LOCK(sc);
 556         rum_unsetup_tx_list(sc);
 557         RUM_UNLOCK(sc);
 558
 559         if (ifp) {
 560                 ic = ifp->if_l2com;
 561                 ieee80211_ifdetach(ic);
 562                 if_free(ifp);
 563         }
 564         mtx_destroy(&sc->sc_mtx);
 565         return (0);
 566 }
 567
 568 static usb_error_t
 569 rum_do_request(struct rum_softc *sc,
 570     struct usb_device_request *req, void *data)
 571 {
 572         usb_error_t err;
 573         int ntries = 10;
 574
 575         while (ntries--) {
 576                 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx,
 577                     req, data, 0, NULL, 250 /* ms */);
 578                 if (err == 0)
 579                         break;
 580
 581                 DPRINTFN(1, "Control request failed, %s (retrying)\n",
 582                     usbd_errstr(err));
 583                 if (rum_pause(sc, hz / 100))
 584                         break;
 585         }
 586         return (err);
 587 }
 588
 589 static struct ieee80211vap *
 590 rum_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 591     enum ieee80211_opmode opmode, int flags,
 592     const uint8_t bssid[IEEE80211_ADDR_LEN],
 593     const uint8_t mac[IEEE80211_ADDR_LEN])
 594 {
 595         struct rum_softc *sc = ic->ic_ifp->if_softc;
 596         struct rum_vap *rvp;
 597         struct ieee80211vap *vap;
 598
 599         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 600                 return NULL;
 601         rvp = (struct rum_vap *) malloc(sizeof(struct rum_vap),
 602             M_80211_VAP, M_NOWAIT | M_ZERO);
 603         if (rvp == NULL)
 604                 return NULL;
 605         vap = &rvp->vap;
 606         /* enable s/w bmiss handling for sta mode */
 607         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 608             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 609
 610         /* override state transition machine */
 611         rvp->newstate = vap->iv_newstate;
 612         vap->iv_newstate = rum_newstate;
 613
 614         usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_mtx, 0);
 615         TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
 616         ieee80211_ratectl_init(vap);
 617         ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
 618         /* complete setup */
 619         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 620         ic->ic_opmode = opmode;
 621         return vap;
 622 }
 623
 624 static void
 625 rum_vap_delete(struct ieee80211vap *vap)
 626 {
 627         struct rum_vap *rvp = RUM_VAP(vap);
 628         struct ieee80211com *ic = vap->iv_ic;
 629
 630         usb_callout_drain(&rvp->ratectl_ch);
 631         ieee80211_draintask(ic, &rvp->ratectl_task);
 632         ieee80211_ratectl_deinit(vap);
 633         ieee80211_vap_detach(vap);
 634         free(rvp, M_80211_VAP);
 635 }
 636
 637 static void
 638 rum_tx_free(struct rum_tx_data *data, int txerr)
 639 {
 640         struct rum_softc *sc = data->sc;
 641
 642         if (data->m != NULL) {
 643                 if (data->m->m_flags & M_TXCB)
 644                         ieee80211_process_callback(data->ni, data->m,
 645                             txerr ? ETIMEDOUT : 0);
 646                 m_freem(data->m);
 647                 data->m = NULL;
 648
 649                 ieee80211_free_node(data->ni);
 650                 data->ni = NULL;
 651         }
 652         STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 653         sc->tx_nfree++;
 654 }
 655
 656 static void
 657 rum_setup_tx_list(struct rum_softc *sc)
 658 {
 659         struct rum_tx_data *data;
 660         int i;
 661
 662         sc->tx_nfree = 0;
 663         STAILQ_INIT(&sc->tx_q);
 664         STAILQ_INIT(&sc->tx_free);
 665
 666         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 667                 data = &sc->tx_data[i];
 668
 669                 data->sc = sc;
 670                 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 671                 sc->tx_nfree++;
 672         }
 673 }
 674
 675 static void
 676 rum_unsetup_tx_list(struct rum_softc *sc)
 677 {
 678         struct rum_tx_data *data;
 679         int i;
 680
 681         /* make sure any subsequent use of the queues will fail */
 682         sc->tx_nfree = 0;
 683         STAILQ_INIT(&sc->tx_q);
 684         STAILQ_INIT(&sc->tx_free);
 685
 686         /* free up all node references and mbufs */
 687         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 688                 data = &sc->tx_data[i];
 689
 690                 if (data->m != NULL) {
 691                         m_freem(data->m);
 692                         data->m = NULL;
 693                 }
 694                 if (data->ni != NULL) {
 695                         ieee80211_free_node(data->ni);
 696                         data->ni = NULL;
 697                 }
 698         }
 699 }
 700
 701 static int
 702 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 703 {
 704         struct rum_vap *rvp = RUM_VAP(vap);
 705         struct ieee80211com *ic = vap->iv_ic;
 706         struct rum_softc *sc = ic->ic_ifp->if_softc;
 707         const struct ieee80211_txparam *tp;
 708         enum ieee80211_state ostate;
 709         struct ieee80211_node *ni;
 710         uint32_t tmp;
 711
 712         ostate = vap->iv_state;
 713         DPRINTF("%s -> %s\n",
 714                 ieee80211_state_name[ostate],
 715                 ieee80211_state_name[nstate]);
 716
 717         IEEE80211_UNLOCK(ic);
 718         RUM_LOCK(sc);
 719         usb_callout_stop(&rvp->ratectl_ch);
 720
 721         switch (nstate) {
 722         case IEEE80211_S_INIT:
 723                 if (ostate == IEEE80211_S_RUN) {
 724                         /* abort TSF synchronization */
 725                         tmp = rum_read(sc, RT2573_TXRX_CSR9);
 726                         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
 727                 }
 728                 break;
 729
 730         case IEEE80211_S_RUN:
 731                 ni = ieee80211_ref_node(vap->iv_bss);
 732
 733                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
 734                         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) {
 735                                 RUM_UNLOCK(sc);
 736                                 IEEE80211_LOCK(ic);
 737                                 ieee80211_free_node(ni);
 738                                 return (-1);
 739                         }
 740                         rum_update_slot(ic->ic_ifp);
 741                         rum_enable_mrr(sc);
 742                         rum_set_txpreamble(sc);
 743                         rum_set_basicrates(sc);
 744                         IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
 745                         rum_set_bssid(sc, sc->sc_bssid);
 746                 }
 747
 748                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 749                     vap->iv_opmode == IEEE80211_M_IBSS)
 750                         rum_prepare_beacon(sc, vap);
 751
 752                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
 753                         rum_enable_tsf_sync(sc);
 754                 else
 755                         rum_enable_tsf(sc);
 756
 757                 /* enable automatic rate adaptation */
 758                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 759                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
 760                         rum_ratectl_start(sc, ni);
 761                 ieee80211_free_node(ni);
 762                 break;
 763         default:
 764                 break;
 765         }
 766         RUM_UNLOCK(sc);
 767         IEEE80211_LOCK(ic);
 768         return (rvp->newstate(vap, nstate, arg));
 769 }
 770
 771 static void
 772 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 773 {
 774         struct rum_softc *sc = usbd_xfer_softc(xfer);
 775         struct ifnet *ifp = sc->sc_ifp;
 776         struct ieee80211vap *vap;
 777         struct rum_tx_data *data;
 778         struct mbuf *m;
 779         struct usb_page_cache *pc;
 780         unsigned int len;
 781         int actlen, sumlen;
 782
 783         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 784
 785         switch (USB_GET_STATE(xfer)) {
 786         case USB_ST_TRANSFERRED:
 787                 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
 788
 789                 /* free resources */
 790                 data = usbd_xfer_get_priv(xfer);
 791                 rum_tx_free(data, 0);
 792                 usbd_xfer_set_priv(xfer, NULL);
 793
 794                 ifp->if_opackets++;
 795                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 796
 797                 /* FALLTHROUGH */
 798         case USB_ST_SETUP:
 799 tr_setup:
 800                 data = STAILQ_FIRST(&sc->tx_q);
 801                 if (data) {
 802                         STAILQ_REMOVE_HEAD(&sc->tx_q, next);
 803                         m = data->m;
 804
 805                         if (m->m_pkthdr.len > (int)(MCLBYTES + RT2573_TX_DESC_SIZE)) {
 806                                 DPRINTFN(0, "data overflow, %u bytes\n",
 807                                     m->m_pkthdr.len);
 808                                 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
 809                         }
 810                         pc = usbd_xfer_get_frame(xfer, 0);
 811                         usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
 812                         usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
 813                             m->m_pkthdr.len);
 814
 815                         vap = data->ni->ni_vap;
 816                         if (ieee80211_radiotap_active_vap(vap)) {
 817                                 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
 818
 819                                 tap->wt_flags = 0;
 820                                 tap->wt_rate = data->rate;
 821                                 tap->wt_antenna = sc->tx_ant;
 822
 823                                 ieee80211_radiotap_tx(vap, m);
 824                         }
 825
 826                         /* align end on a 4-bytes boundary */
 827                         len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
 828                         if ((len % 64) == 0)
 829                                 len += 4;
 830
 831                         DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
 832                             m->m_pkthdr.len, len);
 833
 834                         usbd_xfer_set_frame_len(xfer, 0, len);
 835                         usbd_xfer_set_priv(xfer, data);
 836
 837                         usbd_transfer_submit(xfer);
 838                 }
 839                 RUM_UNLOCK(sc);
 840                 rum_start(ifp);
 841                 RUM_LOCK(sc);
 842                 break;
 843
 844         default:                        /* Error */
 845                 DPRINTFN(11, "transfer error, %s\n",
 846                     usbd_errstr(error));
 847
 848                 ifp->if_oerrors++;
 849                 data = usbd_xfer_get_priv(xfer);
 850                 if (data != NULL) {
 851                         rum_tx_free(data, error);
 852                         usbd_xfer_set_priv(xfer, NULL);
 853                 }
 854
 855                 if (error != USB_ERR_CANCELLED) {
 856                         if (error == USB_ERR_TIMEOUT)
 857                                 device_printf(sc->sc_dev, "device timeout\n");
 858
 859                         /*
 860                          * Try to clear stall first, also if other
 861                          * errors occur, hence clearing stall
 862                          * introduces a 50 ms delay:
 863                          */
 864                         usbd_xfer_set_stall(xfer);
 865                         goto tr_setup;
 866                 }
 867                 break;
 868         }
 869 }
 870
 871 static void
 872 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 873 {
 874         struct rum_softc *sc = usbd_xfer_softc(xfer);
 875         struct ifnet *ifp = sc->sc_ifp;
 876         struct ieee80211com *ic = ifp->if_l2com;
 877         struct ieee80211_node *ni;
 878         struct mbuf *m = NULL;
 879         struct usb_page_cache *pc;
 880         uint32_t flags;
 881         uint8_t rssi = 0;
 882         int len;
 883
 884         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 885
 886         switch (USB_GET_STATE(xfer)) {
 887         case USB_ST_TRANSFERRED:
 888
 889                 DPRINTFN(15, "rx done, actlen=%d\n", len);
 890
 891                 if (len < (int)(RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN)) {
 892                         DPRINTF("%s: xfer too short %d\n",
 893                             device_get_nameunit(sc->sc_dev), len);
 894                         ifp->if_ierrors++;
 895                         goto tr_setup;
 896                 }
 897
 898                 len -= RT2573_RX_DESC_SIZE;
 899                 pc = usbd_xfer_get_frame(xfer, 0);
 900                 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
 901
 902                 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
 903                 flags = le32toh(sc->sc_rx_desc.flags);
 904                 if (flags & RT2573_RX_CRC_ERROR) {
 905                         /*
 906                          * This should not happen since we did not
 907                          * request to receive those frames when we
 908                          * filled RUM_TXRX_CSR2:
 909                          */
 910                         DPRINTFN(5, "PHY or CRC error\n");
 911                         ifp->if_ierrors++;
 912                         goto tr_setup;
 913                 }
 914
 915                 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 916                 if (m == NULL) {
 917                         DPRINTF("could not allocate mbuf\n");
 918                         ifp->if_ierrors++;
 919                         goto tr_setup;
 920                 }
 921                 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
 922                     mtod(m, uint8_t *), len);
 923
 924                 /* finalize mbuf */
 925                 m->m_pkthdr.rcvif = ifp;
 926                 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
 927
 928                 if (ieee80211_radiotap_active(ic)) {
 929                         struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
 930
 931                         /* XXX read tsf */
 932                         tap->wr_flags = 0;
 933                         tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
 934                             (flags & RT2573_RX_OFDM) ?
 935                             IEEE80211_T_OFDM : IEEE80211_T_CCK);
 936                         tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
 937                         tap->wr_antnoise = RT2573_NOISE_FLOOR;
 938                         tap->wr_antenna = sc->rx_ant;
 939                 }
 940                 /* FALLTHROUGH */
 941         case USB_ST_SETUP:
 942 tr_setup:
 943                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 944                 usbd_transfer_submit(xfer);
 945
 946                 /*
 947                  * At the end of a USB callback it is always safe to unlock
 948                  * the private mutex of a device! That is why we do the
 949                  * "ieee80211_input" here, and not some lines up!
 950                  */
 951                 RUM_UNLOCK(sc);
 952                 if (m) {
 953                         ni = ieee80211_find_rxnode(ic,
 954                             mtod(m, struct ieee80211_frame_min *));
 955                         if (ni != NULL) {
 956                                 (void) ieee80211_input(ni, m, rssi,
 957                                     RT2573_NOISE_FLOOR);
 958                                 ieee80211_free_node(ni);
 959                         } else
 960                                 (void) ieee80211_input_all(ic, m, rssi,
 961                                     RT2573_NOISE_FLOOR);
 962                 }
 963                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
 964                     !IFQ_IS_EMPTY(&ifp->if_snd))
 965                         rum_start(ifp);
 966                 RUM_LOCK(sc);
 967                 return;
 968
 969         default:                        /* Error */
 970                 if (error != USB_ERR_CANCELLED) {
 971                         /* try to clear stall first */
 972                         usbd_xfer_set_stall(xfer);
 973                         goto tr_setup;
 974                 }
 975                 return;
 976         }
 977 }
 978
 979 static uint8_t
 980 rum_plcp_signal(int rate)
 981 {
 982         switch (rate) {
 983         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
 984         case 12:        return 0xb;
 985         case 18:        return 0xf;
 986         case 24:        return 0xa;
 987         case 36:        return 0xe;
 988         case 48:        return 0x9;
 989         case 72:        return 0xd;
 990         case 96:        return 0x8;
 991         case 108:       return 0xc;
 992
 993         /* CCK rates (NB: not IEEE std, device-specific) */
 994         case 2:         return 0x0;
 995         case 4:         return 0x1;
 996         case 11:        return 0x2;
 997         case 22:        return 0x3;
 998         }
 999         return 0xff;            /* XXX unsupported/unknown rate */
1000 }
1001
1002 static void
1003 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
1004     uint32_t flags, uint16_t xflags, int len, int rate)
1005 {
1006         struct ifnet *ifp = sc->sc_ifp;
1007         struct ieee80211com *ic = ifp->if_l2com;
1008         uint16_t plcp_length;
1009         int remainder;
1010
1011         desc->flags = htole32(flags);
1012         desc->flags |= htole32(RT2573_TX_VALID);
1013         desc->flags |= htole32(len << 16);
1014
1015         desc->xflags = htole16(xflags);
1016
1017         desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) |
1018             RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10));
1019
1020         /* setup PLCP fields */
1021         desc->plcp_signal  = rum_plcp_signal(rate);
1022         desc->plcp_service = 4;
1023
1024         len += IEEE80211_CRC_LEN;
1025         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1026                 desc->flags |= htole32(RT2573_TX_OFDM);
1027
1028                 plcp_length = len & 0xfff;
1029                 desc->plcp_length_hi = plcp_length >> 6;
1030                 desc->plcp_length_lo = plcp_length & 0x3f;
1031         } else {
1032                 plcp_length = (16 * len + rate - 1) / rate;
1033                 if (rate == 22) {
1034                         remainder = (16 * len) % 22;
1035                         if (remainder != 0 && remainder < 7)
1036                                 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1037                 }
1038                 desc->plcp_length_hi = plcp_length >> 8;
1039                 desc->plcp_length_lo = plcp_length & 0xff;
1040
1041                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1042                         desc->plcp_signal |= 0x08;
1043         }
1044 }
1045
1046 static int
1047 rum_sendprot(struct rum_softc *sc,
1048     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1049 {
1050         struct ieee80211com *ic = ni->ni_ic;
1051         const struct ieee80211_frame *wh;
1052         struct rum_tx_data *data;
1053         struct mbuf *mprot;
1054         int protrate, ackrate, pktlen, flags, isshort;
1055         uint16_t dur;
1056
1057         RUM_LOCK_ASSERT(sc, MA_OWNED);
1058         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1059             ("protection %d", prot));
1060
1061         wh = mtod(m, const struct ieee80211_frame *);
1062         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1063
1064         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1065         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1066
1067         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1068         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1069             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1070         flags = RT2573_TX_MORE_FRAG;
1071         if (prot == IEEE80211_PROT_RTSCTS) {
1072                 /* NB: CTS is the same size as an ACK */
1073                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1074                 flags |= RT2573_TX_NEED_ACK;
1075                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1076         } else {
1077                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1078         }
1079         if (mprot == NULL) {
1080                 /* XXX stat + msg */
1081                 return (ENOBUFS);
1082         }
1083         data = STAILQ_FIRST(&sc->tx_free);
1084         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1085         sc->tx_nfree--;
1086
1087         data->m = mprot;
1088         data->ni = ieee80211_ref_node(ni);
1089         data->rate = protrate;
1090         rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate);
1091
1092         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1093         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1094
1095         return 0;
1096 }
1097
1098 static int
1099 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1100 {
1101         struct ieee80211vap *vap = ni->ni_vap;
1102         struct ifnet *ifp = sc->sc_ifp;
1103         struct ieee80211com *ic = ifp->if_l2com;
1104         struct rum_tx_data *data;
1105         struct ieee80211_frame *wh;
1106         const struct ieee80211_txparam *tp;
1107         struct ieee80211_key *k;
1108         uint32_t flags = 0;
1109         uint16_t dur;
1110
1111         RUM_LOCK_ASSERT(sc, MA_OWNED);
1112
1113         data = STAILQ_FIRST(&sc->tx_free);
1114         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1115         sc->tx_nfree--;
1116
1117         wh = mtod(m0, struct ieee80211_frame *);
1118         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1119                 k = ieee80211_crypto_encap(ni, m0);
1120                 if (k == NULL) {
1121                         m_freem(m0);
1122                         return ENOBUFS;
1123                 }
1124                 wh = mtod(m0, struct ieee80211_frame *);
1125         }
1126
1127         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1128
1129         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1130                 flags |= RT2573_TX_NEED_ACK;
1131
1132                 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1133                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1134                 *(uint16_t *)wh->i_dur = htole16(dur);
1135
1136                 /* tell hardware to add timestamp for probe responses */
1137                 if ((wh->i_fc[0] &
1138                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1139                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1140                         flags |= RT2573_TX_TIMESTAMP;
1141         }
1142
1143         data->m = m0;
1144         data->ni = ni;
1145         data->rate = tp->mgmtrate;
1146
1147         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate);
1148
1149         DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1150             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1151
1152         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1153         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1154
1155         return (0);
1156 }
1157
1158 static int
1159 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1160     const struct ieee80211_bpf_params *params)
1161 {
1162         struct ieee80211com *ic = ni->ni_ic;
1163         struct rum_tx_data *data;
1164         uint32_t flags;
1165         int rate, error;
1166
1167         RUM_LOCK_ASSERT(sc, MA_OWNED);
1168         KASSERT(params != NULL, ("no raw xmit params"));
1169
1170         rate = params->ibp_rate0;
1171         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1172                 m_freem(m0);
1173                 return EINVAL;
1174         }
1175         flags = 0;
1176         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1177                 flags |= RT2573_TX_NEED_ACK;
1178         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1179                 error = rum_sendprot(sc, m0, ni,
1180                     params->ibp_flags & IEEE80211_BPF_RTS ?
1181                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1182                     rate);
1183                 if (error || sc->tx_nfree == 0) {
1184                         m_freem(m0);
1185                         return ENOBUFS;
1186                 }
1187                 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1188         }
1189
1190         data = STAILQ_FIRST(&sc->tx_free);
1191         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1192         sc->tx_nfree--;
1193
1194         data->m = m0;
1195         data->ni = ni;
1196         data->rate = rate;
1197
1198         /* XXX need to setup descriptor ourself */
1199         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1200
1201         DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1202             m0->m_pkthdr.len, rate);
1203
1204         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1205         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1206
1207         return 0;
1208 }
1209
1210 static int
1211 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1212 {
1213         struct ieee80211vap *vap = ni->ni_vap;
1214         struct ifnet *ifp = sc->sc_ifp;
1215         struct ieee80211com *ic = ifp->if_l2com;
1216         struct rum_tx_data *data;
1217         struct ieee80211_frame *wh;
1218         const struct ieee80211_txparam *tp;
1219         struct ieee80211_key *k;
1220         uint32_t flags = 0;
1221         uint16_t dur;
1222         int error, rate;
1223
1224         RUM_LOCK_ASSERT(sc, MA_OWNED);
1225
1226         wh = mtod(m0, struct ieee80211_frame *);
1227
1228         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1229         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1230                 rate = tp->mcastrate;
1231         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1232                 rate = tp->ucastrate;
1233         else
1234                 rate = ni->ni_txrate;
1235
1236         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1237                 k = ieee80211_crypto_encap(ni, m0);
1238                 if (k == NULL) {
1239                         m_freem(m0);
1240                         return ENOBUFS;
1241                 }
1242
1243                 /* packet header may have moved, reset our local pointer */
1244                 wh = mtod(m0, struct ieee80211_frame *);
1245         }
1246
1247         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1248                 int prot = IEEE80211_PROT_NONE;
1249                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1250                         prot = IEEE80211_PROT_RTSCTS;
1251                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1252                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1253                         prot = ic->ic_protmode;
1254                 if (prot != IEEE80211_PROT_NONE) {
1255                         error = rum_sendprot(sc, m0, ni, prot, rate);
1256                         if (error || sc->tx_nfree == 0) {
1257                                 m_freem(m0);
1258                                 return ENOBUFS;
1259                         }
1260                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1261                 }
1262         }
1263
1264         data = STAILQ_FIRST(&sc->tx_free);
1265         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1266         sc->tx_nfree--;
1267
1268         data->m = m0;
1269         data->ni = ni;
1270         data->rate = rate;
1271
1272         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1273                 flags |= RT2573_TX_NEED_ACK;
1274                 flags |= RT2573_TX_MORE_FRAG;
1275
1276                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1277                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1278                 *(uint16_t *)wh->i_dur = htole16(dur);
1279         }
1280
1281         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1282
1283         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1284             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1285
1286         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1287         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1288
1289         return 0;
1290 }
1291
1292 static void
1293 rum_start(struct ifnet *ifp)
1294 {
1295         struct rum_softc *sc = ifp->if_softc;
1296         struct ieee80211_node *ni;
1297         struct mbuf *m;
1298
1299         RUM_LOCK(sc);
1300         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1301                 RUM_UNLOCK(sc);
1302                 return;
1303         }
1304         for (;;) {
1305                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1306                 if (m == NULL)
1307                         break;
1308                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1309                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1310                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1311                         break;
1312                 }
1313                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1314                 if (rum_tx_data(sc, m, ni) != 0) {
1315                         ieee80211_free_node(ni);
1316                         ifp->if_oerrors++;
1317                         break;
1318                 }
1319         }
1320         RUM_UNLOCK(sc);
1321 }
1322
1323 static int
1324 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1325 {
1326         struct rum_softc *sc = ifp->if_softc;
1327         struct ieee80211com *ic = ifp->if_l2com;
1328         struct ifreq *ifr = (struct ifreq *) data;
1329         int error;
1330         int startall = 0;
1331
1332         RUM_LOCK(sc);
1333         error = sc->sc_detached ? ENXIO : 0;
1334         RUM_UNLOCK(sc);
1335         if (error)
1336                 return (error);
1337
1338         switch (cmd) {
1339         case SIOCSIFFLAGS:
1340                 RUM_LOCK(sc);
1341                 if (ifp->if_flags & IFF_UP) {
1342                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1343                                 rum_init_locked(sc);
1344                                 startall = 1;
1345                         } else
1346                                 rum_setpromisc(sc);
1347                 } else {
1348                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1349                                 rum_stop(sc);
1350                 }
1351                 RUM_UNLOCK(sc);
1352                 if (startall)
1353                         ieee80211_start_all(ic);
1354                 break;
1355         case SIOCGIFMEDIA:
1356                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1357                 break;
1358         case SIOCGIFADDR:
1359                 error = ether_ioctl(ifp, cmd, data);
1360                 break;
1361         default:
1362                 error = EINVAL;
1363                 break;
1364         }
1365         return error;
1366 }
1367
1368 static void
1369 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1370 {
1371         struct usb_device_request req;
1372         usb_error_t error;
1373
1374         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1375         req.bRequest = RT2573_READ_EEPROM;
1376         USETW(req.wValue, 0);
1377         USETW(req.wIndex, addr);
1378         USETW(req.wLength, len);
1379
1380         error = rum_do_request(sc, &req, buf);
1381         if (error != 0) {
1382                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1383                     usbd_errstr(error));
1384         }
1385 }
1386
1387 static uint32_t
1388 rum_read(struct rum_softc *sc, uint16_t reg)
1389 {
1390         uint32_t val;
1391
1392         rum_read_multi(sc, reg, &val, sizeof val);
1393
1394         return le32toh(val);
1395 }
1396
1397 static void
1398 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1399 {
1400         struct usb_device_request req;
1401         usb_error_t error;
1402
1403         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1404         req.bRequest = RT2573_READ_MULTI_MAC;
1405         USETW(req.wValue, 0);
1406         USETW(req.wIndex, reg);
1407         USETW(req.wLength, len);
1408
1409         error = rum_do_request(sc, &req, buf);
1410         if (error != 0) {
1411                 device_printf(sc->sc_dev,
1412                     "could not multi read MAC register: %s\n",
1413                     usbd_errstr(error));
1414         }
1415 }
1416
1417 static usb_error_t
1418 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1419 {
1420         uint32_t tmp = htole32(val);
1421
1422         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1423 }
1424
1425 static usb_error_t
1426 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1427 {
1428         struct usb_device_request req;
1429         usb_error_t error;
1430         size_t offset;
1431
1432         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1433         req.bRequest = RT2573_WRITE_MULTI_MAC;
1434         USETW(req.wValue, 0);
1435
1436         /* write at most 64 bytes at a time */
1437         for (offset = 0; offset < len; offset += 64) {
1438                 USETW(req.wIndex, reg + offset);
1439                 USETW(req.wLength, MIN(len - offset, 64));
1440
1441                 error = rum_do_request(sc, &req, (char *)buf + offset);
1442                 if (error != 0) {
1443                         device_printf(sc->sc_dev,
1444                             "could not multi write MAC register: %s\n",
1445                             usbd_errstr(error));
1446                         return (error);
1447                 }
1448         }
1449
1450         return (USB_ERR_NORMAL_COMPLETION);
1451 }
1452
1453 static void
1454 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1455 {
1456         uint32_t tmp;
1457         int ntries;
1458
1459         DPRINTFN(2, "reg=0x%08x\n", reg);
1460
1461         for (ntries = 0; ntries < 100; ntries++) {
1462                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1463                         break;
1464                 if (rum_pause(sc, hz / 100))
1465                         break;
1466         }
1467         if (ntries == 100) {
1468                 device_printf(sc->sc_dev, "could not write to BBP\n");
1469                 return;
1470         }
1471
1472         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1473         rum_write(sc, RT2573_PHY_CSR3, tmp);
1474 }
1475
1476 static uint8_t
1477 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1478 {
1479         uint32_t val;
1480         int ntries;
1481
1482         DPRINTFN(2, "reg=0x%08x\n", reg);
1483
1484         for (ntries = 0; ntries < 100; ntries++) {
1485                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1486                         break;
1487                 if (rum_pause(sc, hz / 100))
1488                         break;
1489         }
1490         if (ntries == 100) {
1491                 device_printf(sc->sc_dev, "could not read BBP\n");
1492                 return 0;
1493         }
1494
1495         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1496         rum_write(sc, RT2573_PHY_CSR3, val);
1497
1498         for (ntries = 0; ntries < 100; ntries++) {
1499                 val = rum_read(sc, RT2573_PHY_CSR3);
1500                 if (!(val & RT2573_BBP_BUSY))
1501                         return val & 0xff;
1502                 if (rum_pause(sc, hz / 100))
1503                         break;
1504         }
1505
1506         device_printf(sc->sc_dev, "could not read BBP\n");
1507         return 0;
1508 }
1509
1510 static void
1511 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1512 {
1513         uint32_t tmp;
1514         int ntries;
1515
1516         for (ntries = 0; ntries < 100; ntries++) {
1517                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1518                         break;
1519                 if (rum_pause(sc, hz / 100))
1520                         break;
1521         }
1522         if (ntries == 100) {
1523                 device_printf(sc->sc_dev, "could not write to RF\n");
1524                 return;
1525         }
1526
1527         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1528             (reg & 3);
1529         rum_write(sc, RT2573_PHY_CSR4, tmp);
1530
1531         /* remember last written value in sc */
1532         sc->rf_regs[reg] = val;
1533
1534         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1535 }
1536
1537 static void
1538 rum_select_antenna(struct rum_softc *sc)
1539 {
1540         uint8_t bbp4, bbp77;
1541         uint32_t tmp;
1542
1543         bbp4  = rum_bbp_read(sc, 4);
1544         bbp77 = rum_bbp_read(sc, 77);
1545
1546         /* TBD */
1547
1548         /* make sure Rx is disabled before switching antenna */
1549         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1550         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1551
1552         rum_bbp_write(sc,  4, bbp4);
1553         rum_bbp_write(sc, 77, bbp77);
1554
1555         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1556 }
1557
1558 /*
1559  * Enable multi-rate retries for frames sent at OFDM rates.
1560  * In 802.11b/g mode, allow fallback to CCK rates.
1561  */
1562 static void
1563 rum_enable_mrr(struct rum_softc *sc)
1564 {
1565         struct ifnet *ifp = sc->sc_ifp;
1566         struct ieee80211com *ic = ifp->if_l2com;
1567         uint32_t tmp;
1568
1569         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1570
1571         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1572         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1573                 tmp |= RT2573_MRR_CCK_FALLBACK;
1574         tmp |= RT2573_MRR_ENABLED;
1575
1576         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1577 }
1578
1579 static void
1580 rum_set_txpreamble(struct rum_softc *sc)
1581 {
1582         struct ifnet *ifp = sc->sc_ifp;
1583         struct ieee80211com *ic = ifp->if_l2com;
1584         uint32_t tmp;
1585
1586         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1587
1588         tmp &= ~RT2573_SHORT_PREAMBLE;
1589         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1590                 tmp |= RT2573_SHORT_PREAMBLE;
1591
1592         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1593 }
1594
1595 static void
1596 rum_set_basicrates(struct rum_softc *sc)
1597 {
1598         struct ifnet *ifp = sc->sc_ifp;
1599         struct ieee80211com *ic = ifp->if_l2com;
1600
1601         /* update basic rate set */
1602         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1603                 /* 11b basic rates: 1, 2Mbps */
1604                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1605         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1606                 /* 11a basic rates: 6, 12, 24Mbps */
1607                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1608         } else {
1609                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1610                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1611         }
1612 }
1613
1614 /*
1615  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1616  * driver.
1617  */
1618 static void
1619 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1620 {
1621         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1622         uint32_t tmp;
1623
1624         /* update all BBP registers that depend on the band */
1625         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1626         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1627         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1628                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1629                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1630         }
1631         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1632             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1633                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1634         }
1635
1636         sc->bbp17 = bbp17;
1637         rum_bbp_write(sc,  17, bbp17);
1638         rum_bbp_write(sc,  96, bbp96);
1639         rum_bbp_write(sc, 104, bbp104);
1640
1641         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1642             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1643                 rum_bbp_write(sc, 75, 0x80);
1644                 rum_bbp_write(sc, 86, 0x80);
1645                 rum_bbp_write(sc, 88, 0x80);
1646         }
1647
1648         rum_bbp_write(sc, 35, bbp35);
1649         rum_bbp_write(sc, 97, bbp97);
1650         rum_bbp_write(sc, 98, bbp98);
1651
1652         tmp = rum_read(sc, RT2573_PHY_CSR0);
1653         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1654         if (IEEE80211_IS_CHAN_2GHZ(c))
1655                 tmp |= RT2573_PA_PE_2GHZ;
1656         else
1657                 tmp |= RT2573_PA_PE_5GHZ;
1658         rum_write(sc, RT2573_PHY_CSR0, tmp);
1659 }
1660
1661 static void
1662 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1663 {
1664         struct ifnet *ifp = sc->sc_ifp;
1665         struct ieee80211com *ic = ifp->if_l2com;
1666         const struct rfprog *rfprog;
1667         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1668         int8_t power;
1669         int i, chan;
1670
1671         chan = ieee80211_chan2ieee(ic, c);
1672         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1673                 return;
1674
1675         /* select the appropriate RF settings based on what EEPROM says */
1676         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1677                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1678
1679         /* find the settings for this channel (we know it exists) */
1680         for (i = 0; rfprog[i].chan != chan; i++);
1681
1682         power = sc->txpow[i];
1683         if (power < 0) {
1684                 bbp94 += power;
1685                 power = 0;
1686         } else if (power > 31) {
1687                 bbp94 += power - 31;
1688                 power = 31;
1689         }
1690
1691         /*
1692          * If we are switching from the 2GHz band to the 5GHz band or
1693          * vice-versa, BBP registers need to be reprogrammed.
1694          */
1695         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1696                 rum_select_band(sc, c);
1697                 rum_select_antenna(sc);
1698         }
1699         ic->ic_curchan = c;
1700
1701         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1702         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1703         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1704         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1705
1706         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1707         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1708         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1709         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1710
1711         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1712         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1713         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1714         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1715
1716         rum_pause(sc, hz / 100);
1717
1718         /* enable smart mode for MIMO-capable RFs */
1719         bbp3 = rum_bbp_read(sc, 3);
1720
1721         bbp3 &= ~RT2573_SMART_MODE;
1722         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1723                 bbp3 |= RT2573_SMART_MODE;
1724
1725         rum_bbp_write(sc, 3, bbp3);
1726
1727         if (bbp94 != RT2573_BBPR94_DEFAULT)
1728                 rum_bbp_write(sc, 94, bbp94);
1729
1730         /* give the chip some extra time to do the switchover */
1731         rum_pause(sc, hz / 100);
1732 }
1733
1734 /*
1735  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1736  * and HostAP operating modes.
1737  */
1738 static void
1739 rum_enable_tsf_sync(struct rum_softc *sc)
1740 {
1741         struct ifnet *ifp = sc->sc_ifp;
1742         struct ieee80211com *ic = ifp->if_l2com;
1743         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1744         uint32_t tmp;
1745
1746         if (vap->iv_opmode != IEEE80211_M_STA) {
1747                 /*
1748                  * Change default 16ms TBTT adjustment to 8ms.
1749                  * Must be done before enabling beacon generation.
1750                  */
1751                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1752         }
1753
1754         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1755
1756         /* set beacon interval (in 1/16ms unit) */
1757         tmp |= vap->iv_bss->ni_intval * 16;
1758
1759         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1760         if (vap->iv_opmode == IEEE80211_M_STA)
1761                 tmp |= RT2573_TSF_MODE(1);
1762         else
1763                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1764
1765         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1766 }
1767
1768 static void
1769 rum_enable_tsf(struct rum_softc *sc)
1770 {
1771         rum_write(sc, RT2573_TXRX_CSR9,
1772             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1773             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1774 }
1775
1776 static void
1777 rum_update_slot(struct ifnet *ifp)
1778 {
1779         struct rum_softc *sc = ifp->if_softc;
1780         struct ieee80211com *ic = ifp->if_l2com;
1781         uint8_t slottime;
1782         uint32_t tmp;
1783
1784         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1785
1786         tmp = rum_read(sc, RT2573_MAC_CSR9);
1787         tmp = (tmp & ~0xff) | slottime;
1788         rum_write(sc, RT2573_MAC_CSR9, tmp);
1789
1790         DPRINTF("setting slot time to %uus\n", slottime);
1791 }
1792
1793 static void
1794 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1795 {
1796         uint32_t tmp;
1797
1798         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1799         rum_write(sc, RT2573_MAC_CSR4, tmp);
1800
1801         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1802         rum_write(sc, RT2573_MAC_CSR5, tmp);
1803 }
1804
1805 static void
1806 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1807 {
1808         uint32_t tmp;
1809
1810         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1811         rum_write(sc, RT2573_MAC_CSR2, tmp);
1812
1813         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1814         rum_write(sc, RT2573_MAC_CSR3, tmp);
1815 }
1816
1817 static void
1818 rum_setpromisc(struct rum_softc *sc)
1819 {
1820         struct ifnet *ifp = sc->sc_ifp;
1821         uint32_t tmp;
1822
1823         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1824
1825         tmp &= ~RT2573_DROP_NOT_TO_ME;
1826         if (!(ifp->if_flags & IFF_PROMISC))
1827                 tmp |= RT2573_DROP_NOT_TO_ME;
1828
1829         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1830
1831         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1832             "entering" : "leaving");
1833 }
1834
1835 static void
1836 rum_update_promisc(struct ifnet *ifp)
1837 {
1838         struct rum_softc *sc = ifp->if_softc;
1839
1840         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1841                 return;
1842
1843         RUM_LOCK(sc);
1844         rum_setpromisc(sc);
1845         RUM_UNLOCK(sc);
1846 }
1847
1848 static void
1849 rum_update_mcast(struct ifnet *ifp)
1850 {
1851         static int warning_printed;
1852
1853         if (warning_printed == 0) {
1854                 if_printf(ifp, "need to implement %s\n", __func__);
1855                 warning_printed = 1;
1856         }
1857 }
1858
1859 static const char *
1860 rum_get_rf(int rev)
1861 {
1862         switch (rev) {
1863         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1864         case RT2573_RF_2528:    return "RT2528";
1865         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1866         case RT2573_RF_5226:    return "RT5226";
1867         default:                return "unknown";
1868         }
1869 }
1870
1871 static void
1872 rum_read_eeprom(struct rum_softc *sc)
1873 {
1874         uint16_t val;
1875 #ifdef RUM_DEBUG
1876         int i;
1877 #endif
1878
1879         /* read MAC address */
1880         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1881
1882         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1883         val = le16toh(val);
1884         sc->rf_rev =   (val >> 11) & 0x1f;
1885         sc->hw_radio = (val >> 10) & 0x1;
1886         sc->rx_ant =   (val >> 4)  & 0x3;
1887         sc->tx_ant =   (val >> 2)  & 0x3;
1888         sc->nb_ant =   val & 0x3;
1889
1890         DPRINTF("RF revision=%d\n", sc->rf_rev);
1891
1892         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1893         val = le16toh(val);
1894         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1895         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1896
1897         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1898             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1899
1900         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1901         val = le16toh(val);
1902         if ((val & 0xff) != 0xff)
1903                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1904
1905         /* Only [-10, 10] is valid */
1906         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1907                 sc->rssi_2ghz_corr = 0;
1908
1909         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1910         val = le16toh(val);
1911         if ((val & 0xff) != 0xff)
1912                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1913
1914         /* Only [-10, 10] is valid */
1915         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1916                 sc->rssi_5ghz_corr = 0;
1917
1918         if (sc->ext_2ghz_lna)
1919                 sc->rssi_2ghz_corr -= 14;
1920         if (sc->ext_5ghz_lna)
1921                 sc->rssi_5ghz_corr -= 14;
1922
1923         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1924             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1925
1926         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1927         val = le16toh(val);
1928         if ((val & 0xff) != 0xff)
1929                 sc->rffreq = val & 0xff;
1930
1931         DPRINTF("RF freq=%d\n", sc->rffreq);
1932
1933         /* read Tx power for all a/b/g channels */
1934         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1935         /* XXX default Tx power for 802.11a channels */
1936         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1937 #ifdef RUM_DEBUG
1938         for (i = 0; i < 14; i++)
1939                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1940 #endif
1941
1942         /* read default values for BBP registers */
1943         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1944 #ifdef RUM_DEBUG
1945         for (i = 0; i < 14; i++) {
1946                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1947                         continue;
1948                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1949                     sc->bbp_prom[i].val);
1950         }
1951 #endif
1952 }
1953
1954 static int
1955 rum_bbp_init(struct rum_softc *sc)
1956 {
1957         int i, ntries;
1958
1959         /* wait for BBP to be ready */
1960         for (ntries = 0; ntries < 100; ntries++) {
1961                 const uint8_t val = rum_bbp_read(sc, 0);
1962                 if (val != 0 && val != 0xff)
1963                         break;
1964                 if (rum_pause(sc, hz / 100))
1965                         break;
1966         }
1967         if (ntries == 100) {
1968                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1969                 return EIO;
1970         }
1971
1972         /* initialize BBP registers to default values */
1973         for (i = 0; i < N(rum_def_bbp); i++)
1974                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1975
1976         /* write vendor-specific BBP values (from EEPROM) */
1977         for (i = 0; i < 16; i++) {
1978                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1979                         continue;
1980                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
1981         }
1982
1983         return 0;
1984 }
1985
1986 static void
1987 rum_init_locked(struct rum_softc *sc)
1988 {
1989         struct ifnet *ifp = sc->sc_ifp;
1990         struct ieee80211com *ic = ifp->if_l2com;
1991         uint32_t tmp;
1992         usb_error_t error;
1993         int i, ntries;
1994
1995         RUM_LOCK_ASSERT(sc, MA_OWNED);
1996
1997         rum_stop(sc);
1998
1999         /* initialize MAC registers to default values */
2000         for (i = 0; i < N(rum_def_mac); i++)
2001                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
2002
2003         /* set host ready */
2004         rum_write(sc, RT2573_MAC_CSR1, 3);
2005         rum_write(sc, RT2573_MAC_CSR1, 0);
2006
2007         /* wait for BBP/RF to wakeup */
2008         for (ntries = 0; ntries < 100; ntries++) {
2009                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
2010                         break;
2011                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
2012                 if (rum_pause(sc, hz / 100))
2013                         break;
2014         }
2015         if (ntries == 100) {
2016                 device_printf(sc->sc_dev,
2017                     "timeout waiting for BBP/RF to wakeup\n");
2018                 goto fail;
2019         }
2020
2021         if ((error = rum_bbp_init(sc)) != 0)
2022                 goto fail;
2023
2024         /* select default channel */
2025         rum_select_band(sc, ic->ic_curchan);
2026         rum_select_antenna(sc);
2027         rum_set_chan(sc, ic->ic_curchan);
2028
2029         /* clear STA registers */
2030         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2031
2032         rum_set_macaddr(sc, IF_LLADDR(ifp));
2033
2034         /* initialize ASIC */
2035         rum_write(sc, RT2573_MAC_CSR1, 4);
2036
2037         /*
2038          * Allocate Tx and Rx xfer queues.
2039          */
2040         rum_setup_tx_list(sc);
2041
2042         /* update Rx filter */
2043         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2044
2045         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2046         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2047                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2048                        RT2573_DROP_ACKCTS;
2049                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2050                         tmp |= RT2573_DROP_TODS;
2051                 if (!(ifp->if_flags & IFF_PROMISC))
2052                         tmp |= RT2573_DROP_NOT_TO_ME;
2053         }
2054         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2055
2056         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2057         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2058         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2059         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2060         return;
2061
2062 fail:   rum_stop(sc);
2063 #undef N
2064 }
2065
2066 static void
2067 rum_init(void *priv)
2068 {
2069         struct rum_softc *sc = priv;
2070         struct ifnet *ifp = sc->sc_ifp;
2071         struct ieee80211com *ic = ifp->if_l2com;
2072
2073         RUM_LOCK(sc);
2074         rum_init_locked(sc);
2075         RUM_UNLOCK(sc);
2076
2077         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2078                 ieee80211_start_all(ic);                /* start all vap's */
2079 }
2080
2081 static void
2082 rum_stop(struct rum_softc *sc)
2083 {
2084         struct ifnet *ifp = sc->sc_ifp;
2085         uint32_t tmp;
2086
2087         RUM_LOCK_ASSERT(sc, MA_OWNED);
2088
2089         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2090
2091         RUM_UNLOCK(sc);
2092
2093         /*
2094          * Drain the USB transfers, if not already drained:
2095          */
2096         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2097         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2098
2099         RUM_LOCK(sc);
2100
2101         rum_unsetup_tx_list(sc);
2102
2103         /* disable Rx */
2104         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2105         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2106
2107         /* reset ASIC */
2108         rum_write(sc, RT2573_MAC_CSR1, 3);
2109         rum_write(sc, RT2573_MAC_CSR1, 0);
2110 }
2111
2112 static void
2113 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2114 {
2115         struct usb_device_request req;
2116         uint16_t reg = RT2573_MCU_CODE_BASE;
2117         usb_error_t err;
2118
2119         /* copy firmware image into NIC */
2120         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2121                 err = rum_write(sc, reg, UGETDW(ucode));
2122                 if (err) {
2123                         /* firmware already loaded ? */
2124                         device_printf(sc->sc_dev, "Firmware load "
2125                             "failure! (ignored)\n");
2126                         break;
2127                 }
2128         }
2129
2130         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2131         req.bRequest = RT2573_MCU_CNTL;
2132         USETW(req.wValue, RT2573_MCU_RUN);
2133         USETW(req.wIndex, 0);
2134         USETW(req.wLength, 0);
2135
2136         err = rum_do_request(sc, &req, NULL);
2137         if (err != 0) {
2138                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2139                     usbd_errstr(err));
2140         }
2141
2142         /* give the chip some time to boot */
2143         rum_pause(sc, hz / 8);
2144 }
2145
2146 static void
2147 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2148 {
2149         struct ieee80211com *ic = vap->iv_ic;
2150         const struct ieee80211_txparam *tp;
2151         struct rum_tx_desc desc;
2152         struct mbuf *m0;
2153
2154         if (vap->iv_bss->ni_chan == IEEE80211_CHAN_ANYC)
2155                 return;
2156         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2157                 return;
2158
2159         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2160         if (m0 == NULL)
2161                 return;
2162
2163         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2164         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2165             m0->m_pkthdr.len, tp->mgmtrate);
2166
2167         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2168         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2169
2170         /* copy beacon header and payload into NIC memory */
2171         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2172             m0->m_pkthdr.len);
2173
2174         m_freem(m0);
2175 }
2176
2177 static int
2178 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2179     const struct ieee80211_bpf_params *params)
2180 {
2181         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2182         struct rum_softc *sc = ifp->if_softc;
2183
2184         RUM_LOCK(sc);
2185         /* prevent management frames from being sent if we're not ready */
2186         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2187                 RUM_UNLOCK(sc);
2188                 m_freem(m);
2189                 ieee80211_free_node(ni);
2190                 return ENETDOWN;
2191         }
2192         if (sc->tx_nfree < RUM_TX_MINFREE) {
2193                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2194                 RUM_UNLOCK(sc);
2195                 m_freem(m);
2196                 ieee80211_free_node(ni);
2197                 return EIO;
2198         }
2199
2200         ifp->if_opackets++;
2201
2202         if (params == NULL) {
2203                 /*
2204                  * Legacy path; interpret frame contents to decide
2205                  * precisely how to send the frame.
2206                  */
2207                 if (rum_tx_mgt(sc, m, ni) != 0)
2208                         goto bad;
2209         } else {
2210                 /*
2211                  * Caller supplied explicit parameters to use in
2212                  * sending the frame.
2213                  */
2214                 if (rum_tx_raw(sc, m, ni, params) != 0)
2215                         goto bad;
2216         }
2217         RUM_UNLOCK(sc);
2218
2219         return 0;
2220 bad:
2221         ifp->if_oerrors++;
2222         RUM_UNLOCK(sc);
2223         ieee80211_free_node(ni);
2224         return EIO;
2225 }
2226
2227 static void
2228 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2229 {
2230         struct ieee80211vap *vap = ni->ni_vap;
2231         struct rum_vap *rvp = RUM_VAP(vap);
2232
2233         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2234         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2235
2236         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2237 }
2238
2239 static void
2240 rum_ratectl_timeout(void *arg)
2241 {
2242         struct rum_vap *rvp = arg;
2243         struct ieee80211vap *vap = &rvp->vap;
2244         struct ieee80211com *ic = vap->iv_ic;
2245
2246         ieee80211_runtask(ic, &rvp->ratectl_task);
2247 }
2248
2249 static void
2250 rum_ratectl_task(void *arg, int pending)
2251 {
2252         struct rum_vap *rvp = arg;
2253         struct ieee80211vap *vap = &rvp->vap;
2254         struct ieee80211com *ic = vap->iv_ic;
2255         struct ifnet *ifp = ic->ic_ifp;
2256         struct rum_softc *sc = ifp->if_softc;
2257         struct ieee80211_node *ni;
2258         int ok, fail;
2259         int sum, retrycnt;
2260
2261         RUM_LOCK(sc);
2262         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2263         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2264
2265         ok = (le32toh(sc->sta[4]) >> 16) +      /* TX ok w/o retry */
2266             (le32toh(sc->sta[5]) & 0xffff);     /* TX ok w/ retry */
2267         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2268         sum = ok+fail;
2269         retrycnt = (le32toh(sc->sta[5]) & 0xffff) + fail;
2270
2271         ni = ieee80211_ref_node(vap->iv_bss);
2272         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2273         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2274         ieee80211_free_node(ni);
2275
2276         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2277
2278         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2279         RUM_UNLOCK(sc);
2280 }
2281
2282 static void
2283 rum_scan_start(struct ieee80211com *ic)
2284 {
2285         struct ifnet *ifp = ic->ic_ifp;
2286         struct rum_softc *sc = ifp->if_softc;
2287         uint32_t tmp;
2288
2289         RUM_LOCK(sc);
2290         /* abort TSF synchronization */
2291         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2292         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2293         rum_set_bssid(sc, ifp->if_broadcastaddr);
2294         RUM_UNLOCK(sc);
2295
2296 }
2297
2298 static void
2299 rum_scan_end(struct ieee80211com *ic)
2300 {
2301         struct rum_softc *sc = ic->ic_ifp->if_softc;
2302
2303         RUM_LOCK(sc);
2304         rum_enable_tsf_sync(sc);
2305         rum_set_bssid(sc, sc->sc_bssid);
2306         RUM_UNLOCK(sc);
2307
2308 }
2309
2310 static void
2311 rum_set_channel(struct ieee80211com *ic)
2312 {
2313         struct rum_softc *sc = ic->ic_ifp->if_softc;
2314
2315         RUM_LOCK(sc);
2316         rum_set_chan(sc, ic->ic_curchan);
2317         RUM_UNLOCK(sc);
2318 }
2319
2320 static int
2321 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2322 {
2323         struct ifnet *ifp = sc->sc_ifp;
2324         struct ieee80211com *ic = ifp->if_l2com;
2325         int lna, agc, rssi;
2326
2327         lna = (raw >> 5) & 0x3;
2328         agc = raw & 0x1f;
2329
2330         if (lna == 0) {
2331                 /*
2332                  * No RSSI mapping
2333                  *
2334                  * NB: Since RSSI is relative to noise floor, -1 is
2335                  *     adequate for caller to know error happened.
2336                  */
2337                 return -1;
2338         }
2339
2340         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2341
2342         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2343                 rssi += sc->rssi_2ghz_corr;
2344
2345                 if (lna == 1)
2346                         rssi -= 64;
2347                 else if (lna == 2)
2348                         rssi -= 74;
2349                 else if (lna == 3)
2350                         rssi -= 90;
2351         } else {
2352                 rssi += sc->rssi_5ghz_corr;
2353
2354                 if (!sc->ext_5ghz_lna && lna != 1)
2355                         rssi += 4;
2356
2357                 if (lna == 1)
2358                         rssi -= 64;
2359                 else if (lna == 2)
2360                         rssi -= 86;
2361                 else if (lna == 3)
2362                         rssi -= 100;
2363         }
2364         return rssi;
2365 }
2366
2367 static int
2368 rum_pause(struct rum_softc *sc, int timeout)
2369 {
2370
2371         usb_pause_mtx(&sc->sc_mtx, timeout);
2372         return (0);
2373 }
2374
2375 static device_method_t rum_methods[] = {
2376         /* Device interface */
2377         DEVMETHOD(device_probe,         rum_match),
2378         DEVMETHOD(device_attach,        rum_attach),
2379         DEVMETHOD(device_detach,        rum_detach),
2380         DEVMETHOD_END
2381 };
2382
2383 static driver_t rum_driver = {
2384         .name = "rum",
2385         .methods = rum_methods,
2386         .size = sizeof(struct rum_softc),
2387 };
2388
2389 static devclass_t rum_devclass;
2390
2391 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0);
2392 MODULE_DEPEND(rum, wlan, 1, 1, 1);
2393 MODULE_DEPEND(rum, usb, 1, 1, 1);
2394 MODULE_VERSION(rum, 1);