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