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
 608         if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
 609             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac) != 0) {
 610                 /* out of memory */
 611                 free(rvp, M_80211_VAP);
 612                 return (NULL);
 613         }
 614
 615         /* override state transition machine */
 616         rvp->newstate = vap->iv_newstate;
 617         vap->iv_newstate = rum_newstate;
 618
 619         usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_mtx, 0);
 620         TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
 621         ieee80211_ratectl_init(vap);
 622         ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
 623         /* complete setup */
 624         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 625         ic->ic_opmode = opmode;
 626         return vap;
 627 }
 628
 629 static void
 630 rum_vap_delete(struct ieee80211vap *vap)
 631 {
 632         struct rum_vap *rvp = RUM_VAP(vap);
 633         struct ieee80211com *ic = vap->iv_ic;
 634
 635         usb_callout_drain(&rvp->ratectl_ch);
 636         ieee80211_draintask(ic, &rvp->ratectl_task);
 637         ieee80211_ratectl_deinit(vap);
 638         ieee80211_vap_detach(vap);
 639         free(rvp, M_80211_VAP);
 640 }
 641
 642 static void
 643 rum_tx_free(struct rum_tx_data *data, int txerr)
 644 {
 645         struct rum_softc *sc = data->sc;
 646
 647         if (data->m != NULL) {
 648                 if (data->m->m_flags & M_TXCB)
 649                         ieee80211_process_callback(data->ni, data->m,
 650                             txerr ? ETIMEDOUT : 0);
 651                 m_freem(data->m);
 652                 data->m = NULL;
 653
 654                 ieee80211_free_node(data->ni);
 655                 data->ni = NULL;
 656         }
 657         STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 658         sc->tx_nfree++;
 659 }
 660
 661 static void
 662 rum_setup_tx_list(struct rum_softc *sc)
 663 {
 664         struct rum_tx_data *data;
 665         int i;
 666
 667         sc->tx_nfree = 0;
 668         STAILQ_INIT(&sc->tx_q);
 669         STAILQ_INIT(&sc->tx_free);
 670
 671         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 672                 data = &sc->tx_data[i];
 673
 674                 data->sc = sc;
 675                 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 676                 sc->tx_nfree++;
 677         }
 678 }
 679
 680 static void
 681 rum_unsetup_tx_list(struct rum_softc *sc)
 682 {
 683         struct rum_tx_data *data;
 684         int i;
 685
 686         /* make sure any subsequent use of the queues will fail */
 687         sc->tx_nfree = 0;
 688         STAILQ_INIT(&sc->tx_q);
 689         STAILQ_INIT(&sc->tx_free);
 690
 691         /* free up all node references and mbufs */
 692         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 693                 data = &sc->tx_data[i];
 694
 695                 if (data->m != NULL) {
 696                         m_freem(data->m);
 697                         data->m = NULL;
 698                 }
 699                 if (data->ni != NULL) {
 700                         ieee80211_free_node(data->ni);
 701                         data->ni = NULL;
 702                 }
 703         }
 704 }
 705
 706 static int
 707 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 708 {
 709         struct rum_vap *rvp = RUM_VAP(vap);
 710         struct ieee80211com *ic = vap->iv_ic;
 711         struct rum_softc *sc = ic->ic_ifp->if_softc;
 712         const struct ieee80211_txparam *tp;
 713         enum ieee80211_state ostate;
 714         struct ieee80211_node *ni;
 715         uint32_t tmp;
 716
 717         ostate = vap->iv_state;
 718         DPRINTF("%s -> %s\n",
 719                 ieee80211_state_name[ostate],
 720                 ieee80211_state_name[nstate]);
 721
 722         IEEE80211_UNLOCK(ic);
 723         RUM_LOCK(sc);
 724         usb_callout_stop(&rvp->ratectl_ch);
 725
 726         switch (nstate) {
 727         case IEEE80211_S_INIT:
 728                 if (ostate == IEEE80211_S_RUN) {
 729                         /* abort TSF synchronization */
 730                         tmp = rum_read(sc, RT2573_TXRX_CSR9);
 731                         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
 732                 }
 733                 break;
 734
 735         case IEEE80211_S_RUN:
 736                 ni = ieee80211_ref_node(vap->iv_bss);
 737
 738                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
 739                         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) {
 740                                 RUM_UNLOCK(sc);
 741                                 IEEE80211_LOCK(ic);
 742                                 ieee80211_free_node(ni);
 743                                 return (-1);
 744                         }
 745                         rum_update_slot(ic->ic_ifp);
 746                         rum_enable_mrr(sc);
 747                         rum_set_txpreamble(sc);
 748                         rum_set_basicrates(sc);
 749                         IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
 750                         rum_set_bssid(sc, sc->sc_bssid);
 751                 }
 752
 753                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 754                     vap->iv_opmode == IEEE80211_M_IBSS)
 755                         rum_prepare_beacon(sc, vap);
 756
 757                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
 758                         rum_enable_tsf_sync(sc);
 759                 else
 760                         rum_enable_tsf(sc);
 761
 762                 /* enable automatic rate adaptation */
 763                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 764                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
 765                         rum_ratectl_start(sc, ni);
 766                 ieee80211_free_node(ni);
 767                 break;
 768         default:
 769                 break;
 770         }
 771         RUM_UNLOCK(sc);
 772         IEEE80211_LOCK(ic);
 773         return (rvp->newstate(vap, nstate, arg));
 774 }
 775
 776 static void
 777 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 778 {
 779         struct rum_softc *sc = usbd_xfer_softc(xfer);
 780         struct ifnet *ifp = sc->sc_ifp;
 781         struct ieee80211vap *vap;
 782         struct rum_tx_data *data;
 783         struct mbuf *m;
 784         struct usb_page_cache *pc;
 785         unsigned int len;
 786         int actlen, sumlen;
 787
 788         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 789
 790         switch (USB_GET_STATE(xfer)) {
 791         case USB_ST_TRANSFERRED:
 792                 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
 793
 794                 /* free resources */
 795                 data = usbd_xfer_get_priv(xfer);
 796                 rum_tx_free(data, 0);
 797                 usbd_xfer_set_priv(xfer, NULL);
 798
 799                 ifp->if_opackets++;
 800                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 801
 802                 /* FALLTHROUGH */
 803         case USB_ST_SETUP:
 804 tr_setup:
 805                 data = STAILQ_FIRST(&sc->tx_q);
 806                 if (data) {
 807                         STAILQ_REMOVE_HEAD(&sc->tx_q, next);
 808                         m = data->m;
 809
 810                         if (m->m_pkthdr.len > (int)(MCLBYTES + RT2573_TX_DESC_SIZE)) {
 811                                 DPRINTFN(0, "data overflow, %u bytes\n",
 812                                     m->m_pkthdr.len);
 813                                 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
 814                         }
 815                         pc = usbd_xfer_get_frame(xfer, 0);
 816                         usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
 817                         usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
 818                             m->m_pkthdr.len);
 819
 820                         vap = data->ni->ni_vap;
 821                         if (ieee80211_radiotap_active_vap(vap)) {
 822                                 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
 823
 824                                 tap->wt_flags = 0;
 825                                 tap->wt_rate = data->rate;
 826                                 tap->wt_antenna = sc->tx_ant;
 827
 828                                 ieee80211_radiotap_tx(vap, m);
 829                         }
 830
 831                         /* align end on a 4-bytes boundary */
 832                         len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
 833                         if ((len % 64) == 0)
 834                                 len += 4;
 835
 836                         DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
 837                             m->m_pkthdr.len, len);
 838
 839                         usbd_xfer_set_frame_len(xfer, 0, len);
 840                         usbd_xfer_set_priv(xfer, data);
 841
 842                         usbd_transfer_submit(xfer);
 843                 }
 844                 RUM_UNLOCK(sc);
 845                 rum_start(ifp);
 846                 RUM_LOCK(sc);
 847                 break;
 848
 849         default:                        /* Error */
 850                 DPRINTFN(11, "transfer error, %s\n",
 851                     usbd_errstr(error));
 852
 853                 ifp->if_oerrors++;
 854                 data = usbd_xfer_get_priv(xfer);
 855                 if (data != NULL) {
 856                         rum_tx_free(data, error);
 857                         usbd_xfer_set_priv(xfer, NULL);
 858                 }
 859
 860                 if (error != USB_ERR_CANCELLED) {
 861                         if (error == USB_ERR_TIMEOUT)
 862                                 device_printf(sc->sc_dev, "device timeout\n");
 863
 864                         /*
 865                          * Try to clear stall first, also if other
 866                          * errors occur, hence clearing stall
 867                          * introduces a 50 ms delay:
 868                          */
 869                         usbd_xfer_set_stall(xfer);
 870                         goto tr_setup;
 871                 }
 872                 break;
 873         }
 874 }
 875
 876 static void
 877 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 878 {
 879         struct rum_softc *sc = usbd_xfer_softc(xfer);
 880         struct ifnet *ifp = sc->sc_ifp;
 881         struct ieee80211com *ic = ifp->if_l2com;
 882         struct ieee80211_node *ni;
 883         struct mbuf *m = NULL;
 884         struct usb_page_cache *pc;
 885         uint32_t flags;
 886         uint8_t rssi = 0;
 887         int len;
 888
 889         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 890
 891         switch (USB_GET_STATE(xfer)) {
 892         case USB_ST_TRANSFERRED:
 893
 894                 DPRINTFN(15, "rx done, actlen=%d\n", len);
 895
 896                 if (len < (int)(RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN)) {
 897                         DPRINTF("%s: xfer too short %d\n",
 898                             device_get_nameunit(sc->sc_dev), len);
 899                         ifp->if_ierrors++;
 900                         goto tr_setup;
 901                 }
 902
 903                 len -= RT2573_RX_DESC_SIZE;
 904                 pc = usbd_xfer_get_frame(xfer, 0);
 905                 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
 906
 907                 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
 908                 flags = le32toh(sc->sc_rx_desc.flags);
 909                 if (flags & RT2573_RX_CRC_ERROR) {
 910                         /*
 911                          * This should not happen since we did not
 912                          * request to receive those frames when we
 913                          * filled RUM_TXRX_CSR2:
 914                          */
 915                         DPRINTFN(5, "PHY or CRC error\n");
 916                         ifp->if_ierrors++;
 917                         goto tr_setup;
 918                 }
 919
 920                 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 921                 if (m == NULL) {
 922                         DPRINTF("could not allocate mbuf\n");
 923                         ifp->if_ierrors++;
 924                         goto tr_setup;
 925                 }
 926                 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
 927                     mtod(m, uint8_t *), len);
 928
 929                 /* finalize mbuf */
 930                 m->m_pkthdr.rcvif = ifp;
 931                 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
 932
 933                 if (ieee80211_radiotap_active(ic)) {
 934                         struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
 935
 936                         /* XXX read tsf */
 937                         tap->wr_flags = 0;
 938                         tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
 939                             (flags & RT2573_RX_OFDM) ?
 940                             IEEE80211_T_OFDM : IEEE80211_T_CCK);
 941                         tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
 942                         tap->wr_antnoise = RT2573_NOISE_FLOOR;
 943                         tap->wr_antenna = sc->rx_ant;
 944                 }
 945                 /* FALLTHROUGH */
 946         case USB_ST_SETUP:
 947 tr_setup:
 948                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 949                 usbd_transfer_submit(xfer);
 950
 951                 /*
 952                  * At the end of a USB callback it is always safe to unlock
 953                  * the private mutex of a device! That is why we do the
 954                  * "ieee80211_input" here, and not some lines up!
 955                  */
 956                 RUM_UNLOCK(sc);
 957                 if (m) {
 958                         ni = ieee80211_find_rxnode(ic,
 959                             mtod(m, struct ieee80211_frame_min *));
 960                         if (ni != NULL) {
 961                                 (void) ieee80211_input(ni, m, rssi,
 962                                     RT2573_NOISE_FLOOR);
 963                                 ieee80211_free_node(ni);
 964                         } else
 965                                 (void) ieee80211_input_all(ic, m, rssi,
 966                                     RT2573_NOISE_FLOOR);
 967                 }
 968                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
 969                     !IFQ_IS_EMPTY(&ifp->if_snd))
 970                         rum_start(ifp);
 971                 RUM_LOCK(sc);
 972                 return;
 973
 974         default:                        /* Error */
 975                 if (error != USB_ERR_CANCELLED) {
 976                         /* try to clear stall first */
 977                         usbd_xfer_set_stall(xfer);
 978                         goto tr_setup;
 979                 }
 980                 return;
 981         }
 982 }
 983
 984 static uint8_t
 985 rum_plcp_signal(int rate)
 986 {
 987         switch (rate) {
 988         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
 989         case 12:        return 0xb;
 990         case 18:        return 0xf;
 991         case 24:        return 0xa;
 992         case 36:        return 0xe;
 993         case 48:        return 0x9;
 994         case 72:        return 0xd;
 995         case 96:        return 0x8;
 996         case 108:       return 0xc;
 997
 998         /* CCK rates (NB: not IEEE std, device-specific) */
 999         case 2:         return 0x0;
1000         case 4:         return 0x1;
1001         case 11:        return 0x2;
1002         case 22:        return 0x3;
1003         }
1004         return 0xff;            /* XXX unsupported/unknown rate */
1005 }
1006
1007 static void
1008 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
1009     uint32_t flags, uint16_t xflags, int len, int rate)
1010 {
1011         struct ifnet *ifp = sc->sc_ifp;
1012         struct ieee80211com *ic = ifp->if_l2com;
1013         uint16_t plcp_length;
1014         int remainder;
1015
1016         desc->flags = htole32(flags);
1017         desc->flags |= htole32(RT2573_TX_VALID);
1018         desc->flags |= htole32(len << 16);
1019
1020         desc->xflags = htole16(xflags);
1021
1022         desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) |
1023             RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10));
1024
1025         /* setup PLCP fields */
1026         desc->plcp_signal  = rum_plcp_signal(rate);
1027         desc->plcp_service = 4;
1028
1029         len += IEEE80211_CRC_LEN;
1030         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1031                 desc->flags |= htole32(RT2573_TX_OFDM);
1032
1033                 plcp_length = len & 0xfff;
1034                 desc->plcp_length_hi = plcp_length >> 6;
1035                 desc->plcp_length_lo = plcp_length & 0x3f;
1036         } else {
1037                 if (rate == 0)
1038                         rate = 2;       /* avoid division by zero */
1039                 plcp_length = (16 * len + rate - 1) / rate;
1040                 if (rate == 22) {
1041                         remainder = (16 * len) % 22;
1042                         if (remainder != 0 && remainder < 7)
1043                                 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1044                 }
1045                 desc->plcp_length_hi = plcp_length >> 8;
1046                 desc->plcp_length_lo = plcp_length & 0xff;
1047
1048                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1049                         desc->plcp_signal |= 0x08;
1050         }
1051 }
1052
1053 static int
1054 rum_sendprot(struct rum_softc *sc,
1055     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1056 {
1057         struct ieee80211com *ic = ni->ni_ic;
1058         const struct ieee80211_frame *wh;
1059         struct rum_tx_data *data;
1060         struct mbuf *mprot;
1061         int protrate, ackrate, pktlen, flags, isshort;
1062         uint16_t dur;
1063
1064         RUM_LOCK_ASSERT(sc, MA_OWNED);
1065         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1066             ("protection %d", prot));
1067
1068         wh = mtod(m, const struct ieee80211_frame *);
1069         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1070
1071         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1072         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1073
1074         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1075         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1076             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1077         flags = RT2573_TX_MORE_FRAG;
1078         if (prot == IEEE80211_PROT_RTSCTS) {
1079                 /* NB: CTS is the same size as an ACK */
1080                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1081                 flags |= RT2573_TX_NEED_ACK;
1082                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1083         } else {
1084                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1085         }
1086         if (mprot == NULL) {
1087                 /* XXX stat + msg */
1088                 return (ENOBUFS);
1089         }
1090         data = STAILQ_FIRST(&sc->tx_free);
1091         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1092         sc->tx_nfree--;
1093
1094         data->m = mprot;
1095         data->ni = ieee80211_ref_node(ni);
1096         data->rate = protrate;
1097         rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate);
1098
1099         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1100         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1101
1102         return 0;
1103 }
1104
1105 static int
1106 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1107 {
1108         struct ieee80211vap *vap = ni->ni_vap;
1109         struct ifnet *ifp = sc->sc_ifp;
1110         struct ieee80211com *ic = ifp->if_l2com;
1111         struct rum_tx_data *data;
1112         struct ieee80211_frame *wh;
1113         const struct ieee80211_txparam *tp;
1114         struct ieee80211_key *k;
1115         uint32_t flags = 0;
1116         uint16_t dur;
1117
1118         RUM_LOCK_ASSERT(sc, MA_OWNED);
1119
1120         data = STAILQ_FIRST(&sc->tx_free);
1121         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1122         sc->tx_nfree--;
1123
1124         wh = mtod(m0, struct ieee80211_frame *);
1125         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1126                 k = ieee80211_crypto_encap(ni, m0);
1127                 if (k == NULL) {
1128                         m_freem(m0);
1129                         return ENOBUFS;
1130                 }
1131                 wh = mtod(m0, struct ieee80211_frame *);
1132         }
1133
1134         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1135
1136         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1137                 flags |= RT2573_TX_NEED_ACK;
1138
1139                 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1140                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1141                 USETW(wh->i_dur, dur);
1142
1143                 /* tell hardware to add timestamp for probe responses */
1144                 if ((wh->i_fc[0] &
1145                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1146                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1147                         flags |= RT2573_TX_TIMESTAMP;
1148         }
1149
1150         data->m = m0;
1151         data->ni = ni;
1152         data->rate = tp->mgmtrate;
1153
1154         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate);
1155
1156         DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1157             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1158
1159         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1160         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1161
1162         return (0);
1163 }
1164
1165 static int
1166 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1167     const struct ieee80211_bpf_params *params)
1168 {
1169         struct ieee80211com *ic = ni->ni_ic;
1170         struct rum_tx_data *data;
1171         uint32_t flags;
1172         int rate, error;
1173
1174         RUM_LOCK_ASSERT(sc, MA_OWNED);
1175         KASSERT(params != NULL, ("no raw xmit params"));
1176
1177         rate = params->ibp_rate0;
1178         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1179                 m_freem(m0);
1180                 return EINVAL;
1181         }
1182         flags = 0;
1183         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1184                 flags |= RT2573_TX_NEED_ACK;
1185         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1186                 error = rum_sendprot(sc, m0, ni,
1187                     params->ibp_flags & IEEE80211_BPF_RTS ?
1188                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1189                     rate);
1190                 if (error || sc->tx_nfree == 0) {
1191                         m_freem(m0);
1192                         return ENOBUFS;
1193                 }
1194                 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1195         }
1196
1197         data = STAILQ_FIRST(&sc->tx_free);
1198         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1199         sc->tx_nfree--;
1200
1201         data->m = m0;
1202         data->ni = ni;
1203         data->rate = rate;
1204
1205         /* XXX need to setup descriptor ourself */
1206         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1207
1208         DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1209             m0->m_pkthdr.len, rate);
1210
1211         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1212         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1213
1214         return 0;
1215 }
1216
1217 static int
1218 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1219 {
1220         struct ieee80211vap *vap = ni->ni_vap;
1221         struct ifnet *ifp = sc->sc_ifp;
1222         struct ieee80211com *ic = ifp->if_l2com;
1223         struct rum_tx_data *data;
1224         struct ieee80211_frame *wh;
1225         const struct ieee80211_txparam *tp;
1226         struct ieee80211_key *k;
1227         uint32_t flags = 0;
1228         uint16_t dur;
1229         int error, rate;
1230
1231         RUM_LOCK_ASSERT(sc, MA_OWNED);
1232
1233         wh = mtod(m0, struct ieee80211_frame *);
1234
1235         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1236         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1237                 rate = tp->mcastrate;
1238         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1239                 rate = tp->ucastrate;
1240         else
1241                 rate = ni->ni_txrate;
1242
1243         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1244                 k = ieee80211_crypto_encap(ni, m0);
1245                 if (k == NULL) {
1246                         m_freem(m0);
1247                         return ENOBUFS;
1248                 }
1249
1250                 /* packet header may have moved, reset our local pointer */
1251                 wh = mtod(m0, struct ieee80211_frame *);
1252         }
1253
1254         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1255                 int prot = IEEE80211_PROT_NONE;
1256                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1257                         prot = IEEE80211_PROT_RTSCTS;
1258                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1259                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1260                         prot = ic->ic_protmode;
1261                 if (prot != IEEE80211_PROT_NONE) {
1262                         error = rum_sendprot(sc, m0, ni, prot, rate);
1263                         if (error || sc->tx_nfree == 0) {
1264                                 m_freem(m0);
1265                                 return ENOBUFS;
1266                         }
1267                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1268                 }
1269         }
1270
1271         data = STAILQ_FIRST(&sc->tx_free);
1272         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1273         sc->tx_nfree--;
1274
1275         data->m = m0;
1276         data->ni = ni;
1277         data->rate = rate;
1278
1279         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1280                 flags |= RT2573_TX_NEED_ACK;
1281                 flags |= RT2573_TX_MORE_FRAG;
1282
1283                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1284                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1285                 USETW(wh->i_dur, dur);
1286         }
1287
1288         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1289
1290         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1291             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1292
1293         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1294         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1295
1296         return 0;
1297 }
1298
1299 static void
1300 rum_start(struct ifnet *ifp)
1301 {
1302         struct rum_softc *sc = ifp->if_softc;
1303         struct ieee80211_node *ni;
1304         struct mbuf *m;
1305
1306         RUM_LOCK(sc);
1307         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1308                 RUM_UNLOCK(sc);
1309                 return;
1310         }
1311         for (;;) {
1312                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1313                 if (m == NULL)
1314                         break;
1315                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1316                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1317                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1318                         break;
1319                 }
1320                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1321                 if (rum_tx_data(sc, m, ni) != 0) {
1322                         ieee80211_free_node(ni);
1323                         ifp->if_oerrors++;
1324                         break;
1325                 }
1326         }
1327         RUM_UNLOCK(sc);
1328 }
1329
1330 static int
1331 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1332 {
1333         struct rum_softc *sc = ifp->if_softc;
1334         struct ieee80211com *ic = ifp->if_l2com;
1335         struct ifreq *ifr = (struct ifreq *) data;
1336         int error;
1337         int startall = 0;
1338
1339         RUM_LOCK(sc);
1340         error = sc->sc_detached ? ENXIO : 0;
1341         RUM_UNLOCK(sc);
1342         if (error)
1343                 return (error);
1344
1345         switch (cmd) {
1346         case SIOCSIFFLAGS:
1347                 RUM_LOCK(sc);
1348                 if (ifp->if_flags & IFF_UP) {
1349                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1350                                 rum_init_locked(sc);
1351                                 startall = 1;
1352                         } else
1353                                 rum_setpromisc(sc);
1354                 } else {
1355                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1356                                 rum_stop(sc);
1357                 }
1358                 RUM_UNLOCK(sc);
1359                 if (startall)
1360                         ieee80211_start_all(ic);
1361                 break;
1362         case SIOCGIFMEDIA:
1363                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1364                 break;
1365         case SIOCGIFADDR:
1366                 error = ether_ioctl(ifp, cmd, data);
1367                 break;
1368         default:
1369                 error = EINVAL;
1370                 break;
1371         }
1372         return error;
1373 }
1374
1375 static void
1376 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1377 {
1378         struct usb_device_request req;
1379         usb_error_t error;
1380
1381         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1382         req.bRequest = RT2573_READ_EEPROM;
1383         USETW(req.wValue, 0);
1384         USETW(req.wIndex, addr);
1385         USETW(req.wLength, len);
1386
1387         error = rum_do_request(sc, &req, buf);
1388         if (error != 0) {
1389                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1390                     usbd_errstr(error));
1391         }
1392 }
1393
1394 static uint32_t
1395 rum_read(struct rum_softc *sc, uint16_t reg)
1396 {
1397         uint32_t val;
1398
1399         rum_read_multi(sc, reg, &val, sizeof val);
1400
1401         return le32toh(val);
1402 }
1403
1404 static void
1405 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1406 {
1407         struct usb_device_request req;
1408         usb_error_t error;
1409
1410         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1411         req.bRequest = RT2573_READ_MULTI_MAC;
1412         USETW(req.wValue, 0);
1413         USETW(req.wIndex, reg);
1414         USETW(req.wLength, len);
1415
1416         error = rum_do_request(sc, &req, buf);
1417         if (error != 0) {
1418                 device_printf(sc->sc_dev,
1419                     "could not multi read MAC register: %s\n",
1420                     usbd_errstr(error));
1421         }
1422 }
1423
1424 static usb_error_t
1425 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1426 {
1427         uint32_t tmp = htole32(val);
1428
1429         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1430 }
1431
1432 static usb_error_t
1433 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1434 {
1435         struct usb_device_request req;
1436         usb_error_t error;
1437         size_t offset;
1438
1439         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1440         req.bRequest = RT2573_WRITE_MULTI_MAC;
1441         USETW(req.wValue, 0);
1442
1443         /* write at most 64 bytes at a time */
1444         for (offset = 0; offset < len; offset += 64) {
1445                 USETW(req.wIndex, reg + offset);
1446                 USETW(req.wLength, MIN(len - offset, 64));
1447
1448                 error = rum_do_request(sc, &req, (char *)buf + offset);
1449                 if (error != 0) {
1450                         device_printf(sc->sc_dev,
1451                             "could not multi write MAC register: %s\n",
1452                             usbd_errstr(error));
1453                         return (error);
1454                 }
1455         }
1456
1457         return (USB_ERR_NORMAL_COMPLETION);
1458 }
1459
1460 static void
1461 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1462 {
1463         uint32_t tmp;
1464         int ntries;
1465
1466         DPRINTFN(2, "reg=0x%08x\n", reg);
1467
1468         for (ntries = 0; ntries < 100; ntries++) {
1469                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1470                         break;
1471                 if (rum_pause(sc, hz / 100))
1472                         break;
1473         }
1474         if (ntries == 100) {
1475                 device_printf(sc->sc_dev, "could not write to BBP\n");
1476                 return;
1477         }
1478
1479         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1480         rum_write(sc, RT2573_PHY_CSR3, tmp);
1481 }
1482
1483 static uint8_t
1484 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1485 {
1486         uint32_t val;
1487         int ntries;
1488
1489         DPRINTFN(2, "reg=0x%08x\n", reg);
1490
1491         for (ntries = 0; ntries < 100; ntries++) {
1492                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1493                         break;
1494                 if (rum_pause(sc, hz / 100))
1495                         break;
1496         }
1497         if (ntries == 100) {
1498                 device_printf(sc->sc_dev, "could not read BBP\n");
1499                 return 0;
1500         }
1501
1502         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1503         rum_write(sc, RT2573_PHY_CSR3, val);
1504
1505         for (ntries = 0; ntries < 100; ntries++) {
1506                 val = rum_read(sc, RT2573_PHY_CSR3);
1507                 if (!(val & RT2573_BBP_BUSY))
1508                         return val & 0xff;
1509                 if (rum_pause(sc, hz / 100))
1510                         break;
1511         }
1512
1513         device_printf(sc->sc_dev, "could not read BBP\n");
1514         return 0;
1515 }
1516
1517 static void
1518 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1519 {
1520         uint32_t tmp;
1521         int ntries;
1522
1523         for (ntries = 0; ntries < 100; ntries++) {
1524                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1525                         break;
1526                 if (rum_pause(sc, hz / 100))
1527                         break;
1528         }
1529         if (ntries == 100) {
1530                 device_printf(sc->sc_dev, "could not write to RF\n");
1531                 return;
1532         }
1533
1534         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1535             (reg & 3);
1536         rum_write(sc, RT2573_PHY_CSR4, tmp);
1537
1538         /* remember last written value in sc */
1539         sc->rf_regs[reg] = val;
1540
1541         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1542 }
1543
1544 static void
1545 rum_select_antenna(struct rum_softc *sc)
1546 {
1547         uint8_t bbp4, bbp77;
1548         uint32_t tmp;
1549
1550         bbp4  = rum_bbp_read(sc, 4);
1551         bbp77 = rum_bbp_read(sc, 77);
1552
1553         /* TBD */
1554
1555         /* make sure Rx is disabled before switching antenna */
1556         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1557         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1558
1559         rum_bbp_write(sc,  4, bbp4);
1560         rum_bbp_write(sc, 77, bbp77);
1561
1562         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1563 }
1564
1565 /*
1566  * Enable multi-rate retries for frames sent at OFDM rates.
1567  * In 802.11b/g mode, allow fallback to CCK rates.
1568  */
1569 static void
1570 rum_enable_mrr(struct rum_softc *sc)
1571 {
1572         struct ifnet *ifp = sc->sc_ifp;
1573         struct ieee80211com *ic = ifp->if_l2com;
1574         uint32_t tmp;
1575
1576         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1577
1578         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1579         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1580                 tmp |= RT2573_MRR_CCK_FALLBACK;
1581         tmp |= RT2573_MRR_ENABLED;
1582
1583         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1584 }
1585
1586 static void
1587 rum_set_txpreamble(struct rum_softc *sc)
1588 {
1589         struct ifnet *ifp = sc->sc_ifp;
1590         struct ieee80211com *ic = ifp->if_l2com;
1591         uint32_t tmp;
1592
1593         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1594
1595         tmp &= ~RT2573_SHORT_PREAMBLE;
1596         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1597                 tmp |= RT2573_SHORT_PREAMBLE;
1598
1599         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1600 }
1601
1602 static void
1603 rum_set_basicrates(struct rum_softc *sc)
1604 {
1605         struct ifnet *ifp = sc->sc_ifp;
1606         struct ieee80211com *ic = ifp->if_l2com;
1607
1608         /* update basic rate set */
1609         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1610                 /* 11b basic rates: 1, 2Mbps */
1611                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1612         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1613                 /* 11a basic rates: 6, 12, 24Mbps */
1614                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1615         } else {
1616                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1617                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1618         }
1619 }
1620
1621 /*
1622  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1623  * driver.
1624  */
1625 static void
1626 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1627 {
1628         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1629         uint32_t tmp;
1630
1631         /* update all BBP registers that depend on the band */
1632         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1633         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1634         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1635                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1636                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1637         }
1638         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1639             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1640                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1641         }
1642
1643         sc->bbp17 = bbp17;
1644         rum_bbp_write(sc,  17, bbp17);
1645         rum_bbp_write(sc,  96, bbp96);
1646         rum_bbp_write(sc, 104, bbp104);
1647
1648         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1649             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1650                 rum_bbp_write(sc, 75, 0x80);
1651                 rum_bbp_write(sc, 86, 0x80);
1652                 rum_bbp_write(sc, 88, 0x80);
1653         }
1654
1655         rum_bbp_write(sc, 35, bbp35);
1656         rum_bbp_write(sc, 97, bbp97);
1657         rum_bbp_write(sc, 98, bbp98);
1658
1659         tmp = rum_read(sc, RT2573_PHY_CSR0);
1660         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1661         if (IEEE80211_IS_CHAN_2GHZ(c))
1662                 tmp |= RT2573_PA_PE_2GHZ;
1663         else
1664                 tmp |= RT2573_PA_PE_5GHZ;
1665         rum_write(sc, RT2573_PHY_CSR0, tmp);
1666 }
1667
1668 static void
1669 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1670 {
1671         struct ifnet *ifp = sc->sc_ifp;
1672         struct ieee80211com *ic = ifp->if_l2com;
1673         const struct rfprog *rfprog;
1674         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1675         int8_t power;
1676         int i, chan;
1677
1678         chan = ieee80211_chan2ieee(ic, c);
1679         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1680                 return;
1681
1682         /* select the appropriate RF settings based on what EEPROM says */
1683         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1684                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1685
1686         /* find the settings for this channel (we know it exists) */
1687         for (i = 0; rfprog[i].chan != chan; i++);
1688
1689         power = sc->txpow[i];
1690         if (power < 0) {
1691                 bbp94 += power;
1692                 power = 0;
1693         } else if (power > 31) {
1694                 bbp94 += power - 31;
1695                 power = 31;
1696         }
1697
1698         /*
1699          * If we are switching from the 2GHz band to the 5GHz band or
1700          * vice-versa, BBP registers need to be reprogrammed.
1701          */
1702         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1703                 rum_select_band(sc, c);
1704                 rum_select_antenna(sc);
1705         }
1706         ic->ic_curchan = c;
1707
1708         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1709         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1710         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1711         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1712
1713         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1714         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1715         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1716         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1717
1718         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1719         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1720         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1721         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1722
1723         rum_pause(sc, hz / 100);
1724
1725         /* enable smart mode for MIMO-capable RFs */
1726         bbp3 = rum_bbp_read(sc, 3);
1727
1728         bbp3 &= ~RT2573_SMART_MODE;
1729         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1730                 bbp3 |= RT2573_SMART_MODE;
1731
1732         rum_bbp_write(sc, 3, bbp3);
1733
1734         if (bbp94 != RT2573_BBPR94_DEFAULT)
1735                 rum_bbp_write(sc, 94, bbp94);
1736
1737         /* give the chip some extra time to do the switchover */
1738         rum_pause(sc, hz / 100);
1739 }
1740
1741 /*
1742  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1743  * and HostAP operating modes.
1744  */
1745 static void
1746 rum_enable_tsf_sync(struct rum_softc *sc)
1747 {
1748         struct ifnet *ifp = sc->sc_ifp;
1749         struct ieee80211com *ic = ifp->if_l2com;
1750         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1751         uint32_t tmp;
1752
1753         if (vap->iv_opmode != IEEE80211_M_STA) {
1754                 /*
1755                  * Change default 16ms TBTT adjustment to 8ms.
1756                  * Must be done before enabling beacon generation.
1757                  */
1758                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1759         }
1760
1761         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1762
1763         /* set beacon interval (in 1/16ms unit) */
1764         tmp |= vap->iv_bss->ni_intval * 16;
1765
1766         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1767         if (vap->iv_opmode == IEEE80211_M_STA)
1768                 tmp |= RT2573_TSF_MODE(1);
1769         else
1770                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1771
1772         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1773 }
1774
1775 static void
1776 rum_enable_tsf(struct rum_softc *sc)
1777 {
1778         rum_write(sc, RT2573_TXRX_CSR9,
1779             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1780             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1781 }
1782
1783 static void
1784 rum_update_slot(struct ifnet *ifp)
1785 {
1786         struct rum_softc *sc = ifp->if_softc;
1787         struct ieee80211com *ic = ifp->if_l2com;
1788         uint8_t slottime;
1789         uint32_t tmp;
1790
1791         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1792
1793         tmp = rum_read(sc, RT2573_MAC_CSR9);
1794         tmp = (tmp & ~0xff) | slottime;
1795         rum_write(sc, RT2573_MAC_CSR9, tmp);
1796
1797         DPRINTF("setting slot time to %uus\n", slottime);
1798 }
1799
1800 static void
1801 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1802 {
1803         uint32_t tmp;
1804
1805         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1806         rum_write(sc, RT2573_MAC_CSR4, tmp);
1807
1808         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1809         rum_write(sc, RT2573_MAC_CSR5, tmp);
1810 }
1811
1812 static void
1813 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1814 {
1815         uint32_t tmp;
1816
1817         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1818         rum_write(sc, RT2573_MAC_CSR2, tmp);
1819
1820         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1821         rum_write(sc, RT2573_MAC_CSR3, tmp);
1822 }
1823
1824 static void
1825 rum_setpromisc(struct rum_softc *sc)
1826 {
1827         struct ifnet *ifp = sc->sc_ifp;
1828         uint32_t tmp;
1829
1830         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1831
1832         tmp &= ~RT2573_DROP_NOT_TO_ME;
1833         if (!(ifp->if_flags & IFF_PROMISC))
1834                 tmp |= RT2573_DROP_NOT_TO_ME;
1835
1836         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1837
1838         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1839             "entering" : "leaving");
1840 }
1841
1842 static void
1843 rum_update_promisc(struct ifnet *ifp)
1844 {
1845         struct rum_softc *sc = ifp->if_softc;
1846
1847         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1848                 return;
1849
1850         RUM_LOCK(sc);
1851         rum_setpromisc(sc);
1852         RUM_UNLOCK(sc);
1853 }
1854
1855 static void
1856 rum_update_mcast(struct ifnet *ifp)
1857 {
1858         static int warning_printed;
1859
1860         if (warning_printed == 0) {
1861                 if_printf(ifp, "need to implement %s\n", __func__);
1862                 warning_printed = 1;
1863         }
1864 }
1865
1866 static const char *
1867 rum_get_rf(int rev)
1868 {
1869         switch (rev) {
1870         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1871         case RT2573_RF_2528:    return "RT2528";
1872         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1873         case RT2573_RF_5226:    return "RT5226";
1874         default:                return "unknown";
1875         }
1876 }
1877
1878 static void
1879 rum_read_eeprom(struct rum_softc *sc)
1880 {
1881         uint16_t val;
1882 #ifdef RUM_DEBUG
1883         int i;
1884 #endif
1885
1886         /* read MAC address */
1887         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1888
1889         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1890         val = le16toh(val);
1891         sc->rf_rev =   (val >> 11) & 0x1f;
1892         sc->hw_radio = (val >> 10) & 0x1;
1893         sc->rx_ant =   (val >> 4)  & 0x3;
1894         sc->tx_ant =   (val >> 2)  & 0x3;
1895         sc->nb_ant =   val & 0x3;
1896
1897         DPRINTF("RF revision=%d\n", sc->rf_rev);
1898
1899         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1900         val = le16toh(val);
1901         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1902         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1903
1904         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1905             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1906
1907         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1908         val = le16toh(val);
1909         if ((val & 0xff) != 0xff)
1910                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1911
1912         /* Only [-10, 10] is valid */
1913         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1914                 sc->rssi_2ghz_corr = 0;
1915
1916         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1917         val = le16toh(val);
1918         if ((val & 0xff) != 0xff)
1919                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1920
1921         /* Only [-10, 10] is valid */
1922         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1923                 sc->rssi_5ghz_corr = 0;
1924
1925         if (sc->ext_2ghz_lna)
1926                 sc->rssi_2ghz_corr -= 14;
1927         if (sc->ext_5ghz_lna)
1928                 sc->rssi_5ghz_corr -= 14;
1929
1930         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1931             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1932
1933         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1934         val = le16toh(val);
1935         if ((val & 0xff) != 0xff)
1936                 sc->rffreq = val & 0xff;
1937
1938         DPRINTF("RF freq=%d\n", sc->rffreq);
1939
1940         /* read Tx power for all a/b/g channels */
1941         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1942         /* XXX default Tx power for 802.11a channels */
1943         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1944 #ifdef RUM_DEBUG
1945         for (i = 0; i < 14; i++)
1946                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1947 #endif
1948
1949         /* read default values for BBP registers */
1950         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1951 #ifdef RUM_DEBUG
1952         for (i = 0; i < 14; i++) {
1953                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1954                         continue;
1955                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1956                     sc->bbp_prom[i].val);
1957         }
1958 #endif
1959 }
1960
1961 static int
1962 rum_bbp_init(struct rum_softc *sc)
1963 {
1964         int i, ntries;
1965
1966         /* wait for BBP to be ready */
1967         for (ntries = 0; ntries < 100; ntries++) {
1968                 const uint8_t val = rum_bbp_read(sc, 0);
1969                 if (val != 0 && val != 0xff)
1970                         break;
1971                 if (rum_pause(sc, hz / 100))
1972                         break;
1973         }
1974         if (ntries == 100) {
1975                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1976                 return EIO;
1977         }
1978
1979         /* initialize BBP registers to default values */
1980         for (i = 0; i < N(rum_def_bbp); i++)
1981                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1982
1983         /* write vendor-specific BBP values (from EEPROM) */
1984         for (i = 0; i < 16; i++) {
1985                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1986                         continue;
1987                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
1988         }
1989
1990         return 0;
1991 }
1992
1993 static void
1994 rum_init_locked(struct rum_softc *sc)
1995 {
1996         struct ifnet *ifp = sc->sc_ifp;
1997         struct ieee80211com *ic = ifp->if_l2com;
1998         uint32_t tmp;
1999         usb_error_t error;
2000         int i, ntries;
2001
2002         RUM_LOCK_ASSERT(sc, MA_OWNED);
2003
2004         rum_stop(sc);
2005
2006         /* initialize MAC registers to default values */
2007         for (i = 0; i < N(rum_def_mac); i++)
2008                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
2009
2010         /* set host ready */
2011         rum_write(sc, RT2573_MAC_CSR1, 3);
2012         rum_write(sc, RT2573_MAC_CSR1, 0);
2013
2014         /* wait for BBP/RF to wakeup */
2015         for (ntries = 0; ntries < 100; ntries++) {
2016                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
2017                         break;
2018                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
2019                 if (rum_pause(sc, hz / 100))
2020                         break;
2021         }
2022         if (ntries == 100) {
2023                 device_printf(sc->sc_dev,
2024                     "timeout waiting for BBP/RF to wakeup\n");
2025                 goto fail;
2026         }
2027
2028         if ((error = rum_bbp_init(sc)) != 0)
2029                 goto fail;
2030
2031         /* select default channel */
2032         rum_select_band(sc, ic->ic_curchan);
2033         rum_select_antenna(sc);
2034         rum_set_chan(sc, ic->ic_curchan);
2035
2036         /* clear STA registers */
2037         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2038
2039         rum_set_macaddr(sc, IF_LLADDR(ifp));
2040
2041         /* initialize ASIC */
2042         rum_write(sc, RT2573_MAC_CSR1, 4);
2043
2044         /*
2045          * Allocate Tx and Rx xfer queues.
2046          */
2047         rum_setup_tx_list(sc);
2048
2049         /* update Rx filter */
2050         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2051
2052         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2053         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2054                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2055                        RT2573_DROP_ACKCTS;
2056                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2057                         tmp |= RT2573_DROP_TODS;
2058                 if (!(ifp->if_flags & IFF_PROMISC))
2059                         tmp |= RT2573_DROP_NOT_TO_ME;
2060         }
2061         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2062
2063         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2064         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2065         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2066         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2067         return;
2068
2069 fail:   rum_stop(sc);
2070 #undef N
2071 }
2072
2073 static void
2074 rum_init(void *priv)
2075 {
2076         struct rum_softc *sc = priv;
2077         struct ifnet *ifp = sc->sc_ifp;
2078         struct ieee80211com *ic = ifp->if_l2com;
2079
2080         RUM_LOCK(sc);
2081         rum_init_locked(sc);
2082         RUM_UNLOCK(sc);
2083
2084         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2085                 ieee80211_start_all(ic);                /* start all vap's */
2086 }
2087
2088 static void
2089 rum_stop(struct rum_softc *sc)
2090 {
2091         struct ifnet *ifp = sc->sc_ifp;
2092         uint32_t tmp;
2093
2094         RUM_LOCK_ASSERT(sc, MA_OWNED);
2095
2096         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2097
2098         RUM_UNLOCK(sc);
2099
2100         /*
2101          * Drain the USB transfers, if not already drained:
2102          */
2103         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2104         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2105
2106         RUM_LOCK(sc);
2107
2108         rum_unsetup_tx_list(sc);
2109
2110         /* disable Rx */
2111         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2112         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2113
2114         /* reset ASIC */
2115         rum_write(sc, RT2573_MAC_CSR1, 3);
2116         rum_write(sc, RT2573_MAC_CSR1, 0);
2117 }
2118
2119 static void
2120 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2121 {
2122         struct usb_device_request req;
2123         uint16_t reg = RT2573_MCU_CODE_BASE;
2124         usb_error_t err;
2125
2126         /* copy firmware image into NIC */
2127         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2128                 err = rum_write(sc, reg, UGETDW(ucode));
2129                 if (err) {
2130                         /* firmware already loaded ? */
2131                         device_printf(sc->sc_dev, "Firmware load "
2132                             "failure! (ignored)\n");
2133                         break;
2134                 }
2135         }
2136
2137         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2138         req.bRequest = RT2573_MCU_CNTL;
2139         USETW(req.wValue, RT2573_MCU_RUN);
2140         USETW(req.wIndex, 0);
2141         USETW(req.wLength, 0);
2142
2143         err = rum_do_request(sc, &req, NULL);
2144         if (err != 0) {
2145                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2146                     usbd_errstr(err));
2147         }
2148
2149         /* give the chip some time to boot */
2150         rum_pause(sc, hz / 8);
2151 }
2152
2153 static void
2154 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2155 {
2156         struct ieee80211com *ic = vap->iv_ic;
2157         const struct ieee80211_txparam *tp;
2158         struct rum_tx_desc desc;
2159         struct mbuf *m0;
2160
2161         if (vap->iv_bss->ni_chan == IEEE80211_CHAN_ANYC)
2162                 return;
2163         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2164                 return;
2165
2166         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2167         if (m0 == NULL)
2168                 return;
2169
2170         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2171         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2172             m0->m_pkthdr.len, tp->mgmtrate);
2173
2174         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2175         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2176
2177         /* copy beacon header and payload into NIC memory */
2178         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2179             m0->m_pkthdr.len);
2180
2181         m_freem(m0);
2182 }
2183
2184 static int
2185 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2186     const struct ieee80211_bpf_params *params)
2187 {
2188         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2189         struct rum_softc *sc = ifp->if_softc;
2190
2191         RUM_LOCK(sc);
2192         /* prevent management frames from being sent if we're not ready */
2193         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2194                 RUM_UNLOCK(sc);
2195                 m_freem(m);
2196                 ieee80211_free_node(ni);
2197                 return ENETDOWN;
2198         }
2199         if (sc->tx_nfree < RUM_TX_MINFREE) {
2200                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2201                 RUM_UNLOCK(sc);
2202                 m_freem(m);
2203                 ieee80211_free_node(ni);
2204                 return EIO;
2205         }
2206
2207         ifp->if_opackets++;
2208
2209         if (params == NULL) {
2210                 /*
2211                  * Legacy path; interpret frame contents to decide
2212                  * precisely how to send the frame.
2213                  */
2214                 if (rum_tx_mgt(sc, m, ni) != 0)
2215                         goto bad;
2216         } else {
2217                 /*
2218                  * Caller supplied explicit parameters to use in
2219                  * sending the frame.
2220                  */
2221                 if (rum_tx_raw(sc, m, ni, params) != 0)
2222                         goto bad;
2223         }
2224         RUM_UNLOCK(sc);
2225
2226         return 0;
2227 bad:
2228         ifp->if_oerrors++;
2229         RUM_UNLOCK(sc);
2230         ieee80211_free_node(ni);
2231         return EIO;
2232 }
2233
2234 static void
2235 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2236 {
2237         struct ieee80211vap *vap = ni->ni_vap;
2238         struct rum_vap *rvp = RUM_VAP(vap);
2239
2240         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2241         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2242
2243         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2244 }
2245
2246 static void
2247 rum_ratectl_timeout(void *arg)
2248 {
2249         struct rum_vap *rvp = arg;
2250         struct ieee80211vap *vap = &rvp->vap;
2251         struct ieee80211com *ic = vap->iv_ic;
2252
2253         ieee80211_runtask(ic, &rvp->ratectl_task);
2254 }
2255
2256 static void
2257 rum_ratectl_task(void *arg, int pending)
2258 {
2259         struct rum_vap *rvp = arg;
2260         struct ieee80211vap *vap = &rvp->vap;
2261         struct ieee80211com *ic = vap->iv_ic;
2262         struct ifnet *ifp = ic->ic_ifp;
2263         struct rum_softc *sc = ifp->if_softc;
2264         struct ieee80211_node *ni;
2265         int ok, fail;
2266         int sum, retrycnt;
2267
2268         RUM_LOCK(sc);
2269         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2270         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2271
2272         ok = (le32toh(sc->sta[4]) >> 16) +      /* TX ok w/o retry */
2273             (le32toh(sc->sta[5]) & 0xffff);     /* TX ok w/ retry */
2274         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2275         sum = ok+fail;
2276         retrycnt = (le32toh(sc->sta[5]) & 0xffff) + fail;
2277
2278         ni = ieee80211_ref_node(vap->iv_bss);
2279         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2280         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2281         ieee80211_free_node(ni);
2282
2283         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2284
2285         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2286         RUM_UNLOCK(sc);
2287 }
2288
2289 static void
2290 rum_scan_start(struct ieee80211com *ic)
2291 {
2292         struct ifnet *ifp = ic->ic_ifp;
2293         struct rum_softc *sc = ifp->if_softc;
2294         uint32_t tmp;
2295
2296         RUM_LOCK(sc);
2297         /* abort TSF synchronization */
2298         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2299         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2300         rum_set_bssid(sc, ifp->if_broadcastaddr);
2301         RUM_UNLOCK(sc);
2302
2303 }
2304
2305 static void
2306 rum_scan_end(struct ieee80211com *ic)
2307 {
2308         struct rum_softc *sc = ic->ic_ifp->if_softc;
2309
2310         RUM_LOCK(sc);
2311         rum_enable_tsf_sync(sc);
2312         rum_set_bssid(sc, sc->sc_bssid);
2313         RUM_UNLOCK(sc);
2314
2315 }
2316
2317 static void
2318 rum_set_channel(struct ieee80211com *ic)
2319 {
2320         struct rum_softc *sc = ic->ic_ifp->if_softc;
2321
2322         RUM_LOCK(sc);
2323         rum_set_chan(sc, ic->ic_curchan);
2324         RUM_UNLOCK(sc);
2325 }
2326
2327 static int
2328 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2329 {
2330         struct ifnet *ifp = sc->sc_ifp;
2331         struct ieee80211com *ic = ifp->if_l2com;
2332         int lna, agc, rssi;
2333
2334         lna = (raw >> 5) & 0x3;
2335         agc = raw & 0x1f;
2336
2337         if (lna == 0) {
2338                 /*
2339                  * No RSSI mapping
2340                  *
2341                  * NB: Since RSSI is relative to noise floor, -1 is
2342                  *     adequate for caller to know error happened.
2343                  */
2344                 return -1;
2345         }
2346
2347         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2348
2349         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2350                 rssi += sc->rssi_2ghz_corr;
2351
2352                 if (lna == 1)
2353                         rssi -= 64;
2354                 else if (lna == 2)
2355                         rssi -= 74;
2356                 else if (lna == 3)
2357                         rssi -= 90;
2358         } else {
2359                 rssi += sc->rssi_5ghz_corr;
2360
2361                 if (!sc->ext_5ghz_lna && lna != 1)
2362                         rssi += 4;
2363
2364                 if (lna == 1)
2365                         rssi -= 64;
2366                 else if (lna == 2)
2367                         rssi -= 86;
2368                 else if (lna == 3)
2369                         rssi -= 100;
2370         }
2371         return rssi;
2372 }
2373
2374 static int
2375 rum_pause(struct rum_softc *sc, int timeout)
2376 {
2377
2378         usb_pause_mtx(&sc->sc_mtx, timeout);
2379         return (0);
2380 }
2381
2382 static device_method_t rum_methods[] = {
2383         /* Device interface */
2384         DEVMETHOD(device_probe,         rum_match),
2385         DEVMETHOD(device_attach,        rum_attach),
2386         DEVMETHOD(device_detach,        rum_detach),
2387         DEVMETHOD_END
2388 };
2389
2390 static driver_t rum_driver = {
2391         .name = "rum",
2392         .methods = rum_methods,
2393         .size = sizeof(struct rum_softc),
2394 };
2395
2396 static devclass_t rum_devclass;
2397
2398 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0);
2399 MODULE_DEPEND(rum, wlan, 1, 1, 1);
2400 MODULE_DEPEND(rum, usb, 1, 1, 1);
2401 MODULE_VERSION(rum, 1);