sys/bus/u4b/wlan/if_rum.c

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