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