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