sys/dev/usb/wlan/if_rum.c

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr>
   5  * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org>
   6  * Copyright (c) 2007-2008 Hans Petter Selasky <hselasky@FreeBSD.org>
   7  *
   8  * Permission to use, copy, modify, and distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  */
  20
  21 #include <sys/cdefs.h>
  22 __FBSDID("$FreeBSD$");
  23
  24 /*-
  25  * Ralink Technology RT2501USB/RT2601USB chipset driver
  26  * http://www.ralinktech.com.tw/
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/sockio.h>
  31 #include <sys/sysctl.h>
  32 #include <sys/lock.h>
  33 #include <sys/mutex.h>
  34 #include <sys/mbuf.h>
  35 #include <sys/kernel.h>
  36 #include <sys/socket.h>
  37 #include <sys/systm.h>
  38 #include <sys/malloc.h>
  39 #include <sys/module.h>
  40 #include <sys/bus.h>
  41 #include <sys/endian.h>
  42 #include <sys/kdb.h>
  43
  44 #include <machine/bus.h>
  45 #include <machine/resource.h>
  46 #include <sys/rman.h>
  47
  48 #include <net/bpf.h>
  49 #include <net/if.h>
  50 #include <net/if_arp.h>
  51 #include <net/ethernet.h>
  52 #include <net/if_dl.h>
  53 #include <net/if_media.h>
  54 #include <net/if_types.h>
  55
  56 #ifdef INET
  57 #include <netinet/in.h>
  58 #include <netinet/in_systm.h>
  59 #include <netinet/in_var.h>
  60 #include <netinet/if_ether.h>
  61 #include <netinet/ip.h>
  62 #endif
  63
  64 #include <net80211/ieee80211_var.h>
  65 #include <net80211/ieee80211_regdomain.h>
  66 #include <net80211/ieee80211_radiotap.h>
  67 #include <net80211/ieee80211_ratectl.h>
  68
  69 #include <dev/usb/usb.h>
  70 #include <dev/usb/usbdi.h>
  71 #include "usbdevs.h"
  72
  73 #define USB_DEBUG_VAR rum_debug
  74 #include <dev/usb/usb_debug.h>
  75
  76 #include <dev/usb/wlan/if_rumreg.h>
  77 #include <dev/usb/wlan/if_rumvar.h>
  78 #include <dev/usb/wlan/if_rumfw.h>
  79
  80 #ifdef USB_DEBUG
  81 static int rum_debug = 0;
  82
  83 static SYSCTL_NODE(_hw_usb, OID_AUTO, rum, CTLFLAG_RW, 0, "USB rum");
  84 SYSCTL_INT(_hw_usb_rum, OID_AUTO, debug, CTLFLAG_RW, &rum_debug, 0,
  85     "Debug level");
  86 #endif
  87
  88 #define N(a)    ((int)(sizeof (a) / sizeof ((a)[0])))
  89
  90 static const STRUCT_USB_HOST_ID rum_devs[] = {
  91 #define RUM_DEV(v,p)  { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
  92     RUM_DEV(ABOCOM, HWU54DM),
  93     RUM_DEV(ABOCOM, RT2573_2),
  94     RUM_DEV(ABOCOM, RT2573_3),
  95     RUM_DEV(ABOCOM, RT2573_4),
  96     RUM_DEV(ABOCOM, WUG2700),
  97     RUM_DEV(AMIT, CGWLUSB2GO),
  98     RUM_DEV(ASUS, RT2573_1),
  99     RUM_DEV(ASUS, RT2573_2),
 100     RUM_DEV(BELKIN, F5D7050A),
 101     RUM_DEV(BELKIN, F5D9050V3),
 102     RUM_DEV(CISCOLINKSYS, WUSB54GC),
 103     RUM_DEV(CISCOLINKSYS, WUSB54GR),
 104     RUM_DEV(CONCEPTRONIC2, C54RU2),
 105     RUM_DEV(COREGA, CGWLUSB2GL),
 106     RUM_DEV(COREGA, CGWLUSB2GPX),
 107     RUM_DEV(DICKSMITH, CWD854F),
 108     RUM_DEV(DICKSMITH, RT2573),
 109     RUM_DEV(EDIMAX, EW7318USG),
 110     RUM_DEV(DLINK2, DWLG122C1),
 111     RUM_DEV(DLINK2, WUA1340),
 112     RUM_DEV(DLINK2, DWA111),
 113     RUM_DEV(DLINK2, DWA110),
 114     RUM_DEV(GIGABYTE, GNWB01GS),
 115     RUM_DEV(GIGABYTE, GNWI05GS),
 116     RUM_DEV(GIGASET, RT2573),
 117     RUM_DEV(GOODWAY, RT2573),
 118     RUM_DEV(GUILLEMOT, HWGUSB254LB),
 119     RUM_DEV(GUILLEMOT, HWGUSB254V2AP),
 120     RUM_DEV(HUAWEI3COM, WUB320G),
 121     RUM_DEV(MELCO, G54HP),
 122     RUM_DEV(MELCO, SG54HP),
 123     RUM_DEV(MELCO, SG54HG),
 124     RUM_DEV(MELCO, WLIUCG),
 125     RUM_DEV(MELCO, WLRUCG),
 126     RUM_DEV(MELCO, WLRUCGAOSS),
 127     RUM_DEV(MSI, RT2573_1),
 128     RUM_DEV(MSI, RT2573_2),
 129     RUM_DEV(MSI, RT2573_3),
 130     RUM_DEV(MSI, RT2573_4),
 131     RUM_DEV(NOVATECH, RT2573),
 132     RUM_DEV(PLANEX2, GWUS54HP),
 133     RUM_DEV(PLANEX2, GWUS54MINI2),
 134     RUM_DEV(PLANEX2, GWUSMM),
 135     RUM_DEV(QCOM, RT2573),
 136     RUM_DEV(QCOM, RT2573_2),
 137     RUM_DEV(QCOM, RT2573_3),
 138     RUM_DEV(RALINK, RT2573),
 139     RUM_DEV(RALINK, RT2573_2),
 140     RUM_DEV(RALINK, RT2671),
 141     RUM_DEV(SITECOMEU, WL113R2),
 142     RUM_DEV(SITECOMEU, WL172),
 143     RUM_DEV(SPARKLAN, RT2573),
 144     RUM_DEV(SURECOM, RT2573),
 145 #undef RUM_DEV
 146 };
 147
 148 static device_probe_t rum_match;
 149 static device_attach_t rum_attach;
 150 static device_detach_t rum_detach;
 151
 152 static usb_callback_t rum_bulk_read_callback;
 153 static usb_callback_t rum_bulk_write_callback;
 154
 155 static usb_error_t      rum_do_request(struct rum_softc *sc,
 156                             struct usb_device_request *req, void *data);
 157 static struct ieee80211vap *rum_vap_create(struct ieee80211com *,
 158                             const char [IFNAMSIZ], int, enum ieee80211_opmode,
 159                             int, const uint8_t [IEEE80211_ADDR_LEN],
 160                             const uint8_t [IEEE80211_ADDR_LEN]);
 161 static void             rum_vap_delete(struct ieee80211vap *);
 162 static void             rum_tx_free(struct rum_tx_data *, int);
 163 static void             rum_setup_tx_list(struct rum_softc *);
 164 static void             rum_unsetup_tx_list(struct rum_softc *);
 165 static int              rum_newstate(struct ieee80211vap *,
 166                             enum ieee80211_state, int);
 167 static void             rum_setup_tx_desc(struct rum_softc *,
 168                             struct rum_tx_desc *, uint32_t, uint16_t, int,
 169                             int);
 170 static int              rum_tx_mgt(struct rum_softc *, struct mbuf *,
 171                             struct ieee80211_node *);
 172 static int              rum_tx_raw(struct rum_softc *, struct mbuf *,
 173                             struct ieee80211_node *,
 174                             const struct ieee80211_bpf_params *);
 175 static int              rum_tx_data(struct rum_softc *, struct mbuf *,
 176                             struct ieee80211_node *);
 177 static void             rum_start(struct ifnet *);
 178 static int              rum_ioctl(struct ifnet *, u_long, caddr_t);
 179 static void             rum_eeprom_read(struct rum_softc *, uint16_t, void *,
 180                             int);
 181 static uint32_t         rum_read(struct rum_softc *, uint16_t);
 182 static void             rum_read_multi(struct rum_softc *, uint16_t, void *,
 183                             int);
 184 static usb_error_t      rum_write(struct rum_softc *, uint16_t, uint32_t);
 185 static usb_error_t      rum_write_multi(struct rum_softc *, uint16_t, void *,
 186                             size_t);
 187 static void             rum_bbp_write(struct rum_softc *, uint8_t, uint8_t);
 188 static uint8_t          rum_bbp_read(struct rum_softc *, uint8_t);
 189 static void             rum_rf_write(struct rum_softc *, uint8_t, uint32_t);
 190 static void             rum_select_antenna(struct rum_softc *);
 191 static void             rum_enable_mrr(struct rum_softc *);
 192 static void             rum_set_txpreamble(struct rum_softc *);
 193 static void             rum_set_basicrates(struct rum_softc *);
 194 static void             rum_select_band(struct rum_softc *,
 195                             struct ieee80211_channel *);
 196 static void             rum_set_chan(struct rum_softc *,
 197                             struct ieee80211_channel *);
 198 static void             rum_enable_tsf_sync(struct rum_softc *);
 199 static void             rum_enable_tsf(struct rum_softc *);
 200 static void             rum_update_slot(struct ifnet *);
 201 static void             rum_set_bssid(struct rum_softc *, const uint8_t *);
 202 static void             rum_set_macaddr(struct rum_softc *, const uint8_t *);
 203 static void             rum_update_mcast(struct ifnet *);
 204 static void             rum_update_promisc(struct ifnet *);
 205 static void             rum_setpromisc(struct rum_softc *);
 206 static const char       *rum_get_rf(int);
 207 static void             rum_read_eeprom(struct rum_softc *);
 208 static int              rum_bbp_init(struct rum_softc *);
 209 static void             rum_init_locked(struct rum_softc *);
 210 static void             rum_init(void *);
 211 static void             rum_stop(struct rum_softc *);
 212 static void             rum_load_microcode(struct rum_softc *, const uint8_t *,
 213                             size_t);
 214 static void             rum_prepare_beacon(struct rum_softc *,
 215                             struct ieee80211vap *);
 216 static int              rum_raw_xmit(struct ieee80211_node *, struct mbuf *,
 217                             const struct ieee80211_bpf_params *);
 218 static void             rum_scan_start(struct ieee80211com *);
 219 static void             rum_scan_end(struct ieee80211com *);
 220 static void             rum_set_channel(struct ieee80211com *);
 221 static int              rum_get_rssi(struct rum_softc *, uint8_t);
 222 static void             rum_ratectl_start(struct rum_softc *,
 223                             struct ieee80211_node *);
 224 static void             rum_ratectl_timeout(void *);
 225 static void             rum_ratectl_task(void *, int);
 226 static int              rum_pause(struct rum_softc *, int);
 227
 228 static const struct {
 229         uint32_t        reg;
 230         uint32_t        val;
 231 } rum_def_mac[] = {
 232         { RT2573_TXRX_CSR0,  0x025fb032 },
 233         { RT2573_TXRX_CSR1,  0x9eaa9eaf },
 234         { RT2573_TXRX_CSR2,  0x8a8b8c8d },
 235         { RT2573_TXRX_CSR3,  0x00858687 },
 236         { RT2573_TXRX_CSR7,  0x2e31353b },
 237         { RT2573_TXRX_CSR8,  0x2a2a2a2c },
 238         { RT2573_TXRX_CSR15, 0x0000000f },
 239         { RT2573_MAC_CSR6,   0x00000fff },
 240         { RT2573_MAC_CSR8,   0x016c030a },
 241         { RT2573_MAC_CSR10,  0x00000718 },
 242         { RT2573_MAC_CSR12,  0x00000004 },
 243         { RT2573_MAC_CSR13,  0x00007f00 },
 244         { RT2573_SEC_CSR0,   0x00000000 },
 245         { RT2573_SEC_CSR1,   0x00000000 },
 246         { RT2573_SEC_CSR5,   0x00000000 },
 247         { RT2573_PHY_CSR1,   0x000023b0 },
 248         { RT2573_PHY_CSR5,   0x00040a06 },
 249         { RT2573_PHY_CSR6,   0x00080606 },
 250         { RT2573_PHY_CSR7,   0x00000408 },
 251         { RT2573_AIFSN_CSR,  0x00002273 },
 252         { RT2573_CWMIN_CSR,  0x00002344 },
 253         { RT2573_CWMAX_CSR,  0x000034aa }
 254 };
 255
 256 static const struct {
 257         uint8_t reg;
 258         uint8_t val;
 259 } rum_def_bbp[] = {
 260         {   3, 0x80 },
 261         {  15, 0x30 },
 262         {  17, 0x20 },
 263         {  21, 0xc8 },
 264         {  22, 0x38 },
 265         {  23, 0x06 },
 266         {  24, 0xfe },
 267         {  25, 0x0a },
 268         {  26, 0x0d },
 269         {  32, 0x0b },
 270         {  34, 0x12 },
 271         {  37, 0x07 },
 272         {  39, 0xf8 },
 273         {  41, 0x60 },
 274         {  53, 0x10 },
 275         {  54, 0x18 },
 276         {  60, 0x10 },
 277         {  61, 0x04 },
 278         {  62, 0x04 },
 279         {  75, 0xfe },
 280         {  86, 0xfe },
 281         {  88, 0xfe },
 282         {  90, 0x0f },
 283         {  99, 0x00 },
 284         { 102, 0x16 },
 285         { 107, 0x04 }
 286 };
 287
 288 static const struct rfprog {
 289         uint8_t         chan;
 290         uint32_t        r1, r2, r3, r4;
 291 }  rum_rf5226[] = {
 292         {   1, 0x00b03, 0x001e1, 0x1a014, 0x30282 },
 293         {   2, 0x00b03, 0x001e1, 0x1a014, 0x30287 },
 294         {   3, 0x00b03, 0x001e2, 0x1a014, 0x30282 },
 295         {   4, 0x00b03, 0x001e2, 0x1a014, 0x30287 },
 296         {   5, 0x00b03, 0x001e3, 0x1a014, 0x30282 },
 297         {   6, 0x00b03, 0x001e3, 0x1a014, 0x30287 },
 298         {   7, 0x00b03, 0x001e4, 0x1a014, 0x30282 },
 299         {   8, 0x00b03, 0x001e4, 0x1a014, 0x30287 },
 300         {   9, 0x00b03, 0x001e5, 0x1a014, 0x30282 },
 301         {  10, 0x00b03, 0x001e5, 0x1a014, 0x30287 },
 302         {  11, 0x00b03, 0x001e6, 0x1a014, 0x30282 },
 303         {  12, 0x00b03, 0x001e6, 0x1a014, 0x30287 },
 304         {  13, 0x00b03, 0x001e7, 0x1a014, 0x30282 },
 305         {  14, 0x00b03, 0x001e8, 0x1a014, 0x30284 },
 306
 307         {  34, 0x00b03, 0x20266, 0x36014, 0x30282 },
 308         {  38, 0x00b03, 0x20267, 0x36014, 0x30284 },
 309         {  42, 0x00b03, 0x20268, 0x36014, 0x30286 },
 310         {  46, 0x00b03, 0x20269, 0x36014, 0x30288 },
 311
 312         {  36, 0x00b03, 0x00266, 0x26014, 0x30288 },
 313         {  40, 0x00b03, 0x00268, 0x26014, 0x30280 },
 314         {  44, 0x00b03, 0x00269, 0x26014, 0x30282 },
 315         {  48, 0x00b03, 0x0026a, 0x26014, 0x30284 },
 316         {  52, 0x00b03, 0x0026b, 0x26014, 0x30286 },
 317         {  56, 0x00b03, 0x0026c, 0x26014, 0x30288 },
 318         {  60, 0x00b03, 0x0026e, 0x26014, 0x30280 },
 319         {  64, 0x00b03, 0x0026f, 0x26014, 0x30282 },
 320
 321         { 100, 0x00b03, 0x0028a, 0x2e014, 0x30280 },
 322         { 104, 0x00b03, 0x0028b, 0x2e014, 0x30282 },
 323         { 108, 0x00b03, 0x0028c, 0x2e014, 0x30284 },
 324         { 112, 0x00b03, 0x0028d, 0x2e014, 0x30286 },
 325         { 116, 0x00b03, 0x0028e, 0x2e014, 0x30288 },
 326         { 120, 0x00b03, 0x002a0, 0x2e014, 0x30280 },
 327         { 124, 0x00b03, 0x002a1, 0x2e014, 0x30282 },
 328         { 128, 0x00b03, 0x002a2, 0x2e014, 0x30284 },
 329         { 132, 0x00b03, 0x002a3, 0x2e014, 0x30286 },
 330         { 136, 0x00b03, 0x002a4, 0x2e014, 0x30288 },
 331         { 140, 0x00b03, 0x002a6, 0x2e014, 0x30280 },
 332
 333         { 149, 0x00b03, 0x002a8, 0x2e014, 0x30287 },
 334         { 153, 0x00b03, 0x002a9, 0x2e014, 0x30289 },
 335         { 157, 0x00b03, 0x002ab, 0x2e014, 0x30281 },
 336         { 161, 0x00b03, 0x002ac, 0x2e014, 0x30283 },
 337         { 165, 0x00b03, 0x002ad, 0x2e014, 0x30285 }
 338 }, rum_rf5225[] = {
 339         {   1, 0x00b33, 0x011e1, 0x1a014, 0x30282 },
 340         {   2, 0x00b33, 0x011e1, 0x1a014, 0x30287 },
 341         {   3, 0x00b33, 0x011e2, 0x1a014, 0x30282 },
 342         {   4, 0x00b33, 0x011e2, 0x1a014, 0x30287 },
 343         {   5, 0x00b33, 0x011e3, 0x1a014, 0x30282 },
 344         {   6, 0x00b33, 0x011e3, 0x1a014, 0x30287 },
 345         {   7, 0x00b33, 0x011e4, 0x1a014, 0x30282 },
 346         {   8, 0x00b33, 0x011e4, 0x1a014, 0x30287 },
 347         {   9, 0x00b33, 0x011e5, 0x1a014, 0x30282 },
 348         {  10, 0x00b33, 0x011e5, 0x1a014, 0x30287 },
 349         {  11, 0x00b33, 0x011e6, 0x1a014, 0x30282 },
 350         {  12, 0x00b33, 0x011e6, 0x1a014, 0x30287 },
 351         {  13, 0x00b33, 0x011e7, 0x1a014, 0x30282 },
 352         {  14, 0x00b33, 0x011e8, 0x1a014, 0x30284 },
 353
 354         {  34, 0x00b33, 0x01266, 0x26014, 0x30282 },
 355         {  38, 0x00b33, 0x01267, 0x26014, 0x30284 },
 356         {  42, 0x00b33, 0x01268, 0x26014, 0x30286 },
 357         {  46, 0x00b33, 0x01269, 0x26014, 0x30288 },
 358
 359         {  36, 0x00b33, 0x01266, 0x26014, 0x30288 },
 360         {  40, 0x00b33, 0x01268, 0x26014, 0x30280 },
 361         {  44, 0x00b33, 0x01269, 0x26014, 0x30282 },
 362         {  48, 0x00b33, 0x0126a, 0x26014, 0x30284 },
 363         {  52, 0x00b33, 0x0126b, 0x26014, 0x30286 },
 364         {  56, 0x00b33, 0x0126c, 0x26014, 0x30288 },
 365         {  60, 0x00b33, 0x0126e, 0x26014, 0x30280 },
 366         {  64, 0x00b33, 0x0126f, 0x26014, 0x30282 },
 367
 368         { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 },
 369         { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 },
 370         { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 },
 371         { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 },
 372         { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 },
 373         { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 },
 374         { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 },
 375         { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 },
 376         { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 },
 377         { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 },
 378         { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 },
 379
 380         { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 },
 381         { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 },
 382         { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 },
 383         { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 },
 384         { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 }
 385 };
 386
 387 static const struct usb_config rum_config[RUM_N_TRANSFER] = {
 388         [RUM_BULK_WR] = {
 389                 .type = UE_BULK,
 390                 .endpoint = UE_ADDR_ANY,
 391                 .direction = UE_DIR_OUT,
 392                 .bufsize = (MCLBYTES + RT2573_TX_DESC_SIZE + 8),
 393                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 394                 .callback = rum_bulk_write_callback,
 395                 .timeout = 5000,        /* ms */
 396         },
 397         [RUM_BULK_RD] = {
 398                 .type = UE_BULK,
 399                 .endpoint = UE_ADDR_ANY,
 400                 .direction = UE_DIR_IN,
 401                 .bufsize = (MCLBYTES + RT2573_RX_DESC_SIZE),
 402                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 403                 .callback = rum_bulk_read_callback,
 404         },
 405 };
 406
 407 static int
 408 rum_match(device_t self)
 409 {
 410         struct usb_attach_arg *uaa = device_get_ivars(self);
 411
 412         if (uaa->usb_mode != USB_MODE_HOST)
 413                 return (ENXIO);
 414         if (uaa->info.bConfigIndex != 0)
 415                 return (ENXIO);
 416         if (uaa->info.bIfaceIndex != RT2573_IFACE_INDEX)
 417                 return (ENXIO);
 418
 419         return (usbd_lookup_id_by_uaa(rum_devs, sizeof(rum_devs), uaa));
 420 }
 421
 422 static int
 423 rum_attach(device_t self)
 424 {
 425         struct usb_attach_arg *uaa = device_get_ivars(self);
 426         struct rum_softc *sc = device_get_softc(self);
 427         struct ieee80211com *ic;
 428         struct ifnet *ifp;
 429         uint8_t iface_index, bands;
 430         uint32_t tmp;
 431         int error, ntries;
 432
 433         device_set_usb_desc(self);
 434         sc->sc_udev = uaa->device;
 435         sc->sc_dev = self;
 436
 437         mtx_init(&sc->sc_mtx, device_get_nameunit(self),
 438             MTX_NETWORK_LOCK, MTX_DEF);
 439
 440         iface_index = RT2573_IFACE_INDEX;
 441         error = usbd_transfer_setup(uaa->device, &iface_index,
 442             sc->sc_xfer, rum_config, RUM_N_TRANSFER, sc, &sc->sc_mtx);
 443         if (error) {
 444                 device_printf(self, "could not allocate USB transfers, "
 445                     "err=%s\n", usbd_errstr(error));
 446                 goto detach;
 447         }
 448
 449         RUM_LOCK(sc);
 450         /* retrieve RT2573 rev. no */
 451         for (ntries = 0; ntries < 100; ntries++) {
 452                 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0)
 453                         break;
 454                 if (rum_pause(sc, hz / 100))
 455                         break;
 456         }
 457         if (ntries == 100) {
 458                 device_printf(sc->sc_dev, "timeout waiting for chip to settle\n");
 459                 RUM_UNLOCK(sc);
 460                 goto detach;
 461         }
 462
 463         /* retrieve MAC address and various other things from EEPROM */
 464         rum_read_eeprom(sc);
 465
 466         device_printf(sc->sc_dev, "MAC/BBP RT2573 (rev 0x%05x), RF %s\n",
 467             tmp, rum_get_rf(sc->rf_rev));
 468
 469         rum_load_microcode(sc, rt2573_ucode, sizeof(rt2573_ucode));
 470         RUM_UNLOCK(sc);
 471
 472         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 473         if (ifp == NULL) {
 474                 device_printf(sc->sc_dev, "can not if_alloc()\n");
 475                 goto detach;
 476         }
 477         ic = ifp->if_l2com;
 478
 479         ifp->if_softc = sc;
 480         if_initname(ifp, "rum", device_get_unit(sc->sc_dev));
 481         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 482         ifp->if_init = rum_init;
 483         ifp->if_ioctl = rum_ioctl;
 484         ifp->if_start = rum_start;
 485         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 486         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 487         IFQ_SET_READY(&ifp->if_snd);
 488
 489         ic->ic_ifp = ifp;
 490         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 491
 492         /* set device capabilities */
 493         ic->ic_caps =
 494               IEEE80211_C_STA           /* station mode supported */
 495             | IEEE80211_C_IBSS          /* IBSS mode supported */
 496             | IEEE80211_C_MONITOR       /* monitor mode supported */
 497             | IEEE80211_C_HOSTAP        /* HostAp mode supported */
 498             | IEEE80211_C_TXPMGT        /* tx power management */
 499             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 500             | IEEE80211_C_SHSLOT        /* short slot time supported */
 501             | IEEE80211_C_BGSCAN        /* bg scanning supported */
 502             | IEEE80211_C_WPA           /* 802.11i */
 503             ;
 504
 505         bands = 0;
 506         setbit(&bands, IEEE80211_MODE_11B);
 507         setbit(&bands, IEEE80211_MODE_11G);
 508         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226)
 509                 setbit(&bands, IEEE80211_MODE_11A);
 510         ieee80211_init_channels(ic, NULL, &bands);
 511
 512         ieee80211_ifattach(ic, sc->sc_bssid);
 513         ic->ic_update_promisc = rum_update_promisc;
 514         ic->ic_raw_xmit = rum_raw_xmit;
 515         ic->ic_scan_start = rum_scan_start;
 516         ic->ic_scan_end = rum_scan_end;
 517         ic->ic_set_channel = rum_set_channel;
 518
 519         ic->ic_vap_create = rum_vap_create;
 520         ic->ic_vap_delete = rum_vap_delete;
 521         ic->ic_update_mcast = rum_update_mcast;
 522
 523         ieee80211_radiotap_attach(ic,
 524             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 525                 RT2573_TX_RADIOTAP_PRESENT,
 526             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 527                 RT2573_RX_RADIOTAP_PRESENT);
 528
 529         if (bootverbose)
 530                 ieee80211_announce(ic);
 531
 532         return (0);
 533
 534 detach:
 535         rum_detach(self);
 536         return (ENXIO);                 /* failure */
 537 }
 538
 539 static int
 540 rum_detach(device_t self)
 541 {
 542         struct rum_softc *sc = device_get_softc(self);
 543         struct ifnet *ifp = sc->sc_ifp;
 544         struct ieee80211com *ic;
 545
 546         /* Prevent further ioctls */
 547         RUM_LOCK(sc);
 548         sc->sc_detached = 1;
 549         RUM_UNLOCK(sc);
 550
 551         /* stop all USB transfers */
 552         usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
 553
 554         /* free TX list, if any */
 555         RUM_LOCK(sc);
 556         rum_unsetup_tx_list(sc);
 557         RUM_UNLOCK(sc);
 558
 559         if (ifp) {
 560                 ic = ifp->if_l2com;
 561                 ieee80211_ifdetach(ic);
 562                 if_free(ifp);
 563         }
 564         mtx_destroy(&sc->sc_mtx);
 565         return (0);
 566 }
 567
 568 static usb_error_t
 569 rum_do_request(struct rum_softc *sc,
 570     struct usb_device_request *req, void *data)
 571 {
 572         usb_error_t err;
 573         int ntries = 10;
 574
 575         while (ntries--) {
 576                 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx,
 577                     req, data, 0, NULL, 250 /* ms */);
 578                 if (err == 0)
 579                         break;
 580
 581                 DPRINTFN(1, "Control request failed, %s (retrying)\n",
 582                     usbd_errstr(err));
 583                 if (rum_pause(sc, hz / 100))
 584                         break;
 585         }
 586         return (err);
 587 }
 588
 589 static struct ieee80211vap *
 590 rum_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 591     enum ieee80211_opmode opmode, int flags,
 592     const uint8_t bssid[IEEE80211_ADDR_LEN],
 593     const uint8_t mac[IEEE80211_ADDR_LEN])
 594 {
 595         struct rum_softc *sc = ic->ic_ifp->if_softc;
 596         struct rum_vap *rvp;
 597         struct ieee80211vap *vap;
 598
 599         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 600                 return NULL;
 601         rvp = (struct rum_vap *) malloc(sizeof(struct rum_vap),
 602             M_80211_VAP, M_NOWAIT | M_ZERO);
 603         if (rvp == NULL)
 604                 return NULL;
 605         vap = &rvp->vap;
 606         /* enable s/w bmiss handling for sta mode */
 607
 608         if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
 609             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac) != 0) {
 610                 /* out of memory */
 611                 free(rvp, M_80211_VAP);
 612                 return (NULL);
 613         }
 614
 615         /* override state transition machine */
 616         rvp->newstate = vap->iv_newstate;
 617         vap->iv_newstate = rum_newstate;
 618
 619         usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_mtx, 0);
 620         TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
 621         ieee80211_ratectl_init(vap);
 622         ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
 623         /* complete setup */
 624         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 625         ic->ic_opmode = opmode;
 626         return vap;
 627 }
 628
 629 static void
 630 rum_vap_delete(struct ieee80211vap *vap)
 631 {
 632         struct rum_vap *rvp = RUM_VAP(vap);
 633         struct ieee80211com *ic = vap->iv_ic;
 634
 635         usb_callout_drain(&rvp->ratectl_ch);
 636         ieee80211_draintask(ic, &rvp->ratectl_task);
 637         ieee80211_ratectl_deinit(vap);
 638         ieee80211_vap_detach(vap);
 639         free(rvp, M_80211_VAP);
 640 }
 641
 642 static void
 643 rum_tx_free(struct rum_tx_data *data, int txerr)
 644 {
 645         struct rum_softc *sc = data->sc;
 646
 647         if (data->m != NULL) {
 648                 if (data->m->m_flags & M_TXCB)
 649                         ieee80211_process_callback(data->ni, data->m,
 650                             txerr ? ETIMEDOUT : 0);
 651                 m_freem(data->m);
 652                 data->m = NULL;
 653
 654                 ieee80211_free_node(data->ni);
 655                 data->ni = NULL;
 656         }
 657         STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 658         sc->tx_nfree++;
 659 }
 660
 661 static void
 662 rum_setup_tx_list(struct rum_softc *sc)
 663 {
 664         struct rum_tx_data *data;
 665         int i;
 666
 667         sc->tx_nfree = 0;
 668         STAILQ_INIT(&sc->tx_q);
 669         STAILQ_INIT(&sc->tx_free);
 670
 671         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 672                 data = &sc->tx_data[i];
 673
 674                 data->sc = sc;
 675                 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 676                 sc->tx_nfree++;
 677         }
 678 }
 679
 680 static void
 681 rum_unsetup_tx_list(struct rum_softc *sc)
 682 {
 683         struct rum_tx_data *data;
 684         int i;
 685
 686         /* make sure any subsequent use of the queues will fail */
 687         sc->tx_nfree = 0;
 688         STAILQ_INIT(&sc->tx_q);
 689         STAILQ_INIT(&sc->tx_free);
 690
 691         /* free up all node references and mbufs */
 692         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 693                 data = &sc->tx_data[i];
 694
 695                 if (data->m != NULL) {
 696                         m_freem(data->m);
 697                         data->m = NULL;
 698                 }
 699                 if (data->ni != NULL) {
 700                         ieee80211_free_node(data->ni);
 701                         data->ni = NULL;
 702                 }
 703         }
 704 }
 705
 706 static int
 707 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 708 {
 709         struct rum_vap *rvp = RUM_VAP(vap);
 710         struct ieee80211com *ic = vap->iv_ic;
 711         struct rum_softc *sc = ic->ic_ifp->if_softc;
 712         const struct ieee80211_txparam *tp;
 713         enum ieee80211_state ostate;
 714         struct ieee80211_node *ni;
 715         uint32_t tmp;
 716
 717         ostate = vap->iv_state;
 718         DPRINTF("%s -> %s\n",
 719                 ieee80211_state_name[ostate],
 720                 ieee80211_state_name[nstate]);
 721
 722         IEEE80211_UNLOCK(ic);
 723         RUM_LOCK(sc);
 724         usb_callout_stop(&rvp->ratectl_ch);
 725
 726         switch (nstate) {
 727         case IEEE80211_S_INIT:
 728                 if (ostate == IEEE80211_S_RUN) {
 729                         /* abort TSF synchronization */
 730                         tmp = rum_read(sc, RT2573_TXRX_CSR9);
 731                         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
 732                 }
 733                 break;
 734
 735         case IEEE80211_S_RUN:
 736                 ni = ieee80211_ref_node(vap->iv_bss);
 737
 738                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
 739                         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) {
 740                                 RUM_UNLOCK(sc);
 741                                 IEEE80211_LOCK(ic);
 742                                 ieee80211_free_node(ni);
 743                                 return (-1);
 744                         }
 745                         rum_update_slot(ic->ic_ifp);
 746                         rum_enable_mrr(sc);
 747                         rum_set_txpreamble(sc);
 748                         rum_set_basicrates(sc);
 749                         IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
 750                         rum_set_bssid(sc, sc->sc_bssid);
 751                 }
 752
 753                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 754                     vap->iv_opmode == IEEE80211_M_IBSS)
 755                         rum_prepare_beacon(sc, vap);
 756
 757                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
 758                         rum_enable_tsf_sync(sc);
 759                 else
 760                         rum_enable_tsf(sc);
 761
 762                 /* enable automatic rate adaptation */
 763                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 764                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
 765                         rum_ratectl_start(sc, ni);
 766                 ieee80211_free_node(ni);
 767                 break;
 768         default:
 769                 break;
 770         }
 771         RUM_UNLOCK(sc);
 772         IEEE80211_LOCK(ic);
 773         return (rvp->newstate(vap, nstate, arg));
 774 }
 775
 776 static void
 777 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 778 {
 779         struct rum_softc *sc = usbd_xfer_softc(xfer);
 780         struct ifnet *ifp = sc->sc_ifp;
 781         struct ieee80211vap *vap;
 782         struct rum_tx_data *data;
 783         struct mbuf *m;
 784         struct usb_page_cache *pc;
 785         unsigned int len;
 786         int actlen, sumlen;
 787
 788         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 789
 790         switch (USB_GET_STATE(xfer)) {
 791         case USB_ST_TRANSFERRED:
 792                 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
 793
 794                 /* free resources */
 795                 data = usbd_xfer_get_priv(xfer);
 796                 rum_tx_free(data, 0);
 797                 usbd_xfer_set_priv(xfer, NULL);
 798
 799                 ifp->if_opackets++;
 800                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 801
 802                 /* FALLTHROUGH */
 803         case USB_ST_SETUP:
 804 tr_setup:
 805                 data = STAILQ_FIRST(&sc->tx_q);
 806                 if (data) {
 807                         STAILQ_REMOVE_HEAD(&sc->tx_q, next);
 808                         m = data->m;
 809
 810                         if (m->m_pkthdr.len > (int)(MCLBYTES + RT2573_TX_DESC_SIZE)) {
 811                                 DPRINTFN(0, "data overflow, %u bytes\n",
 812                                     m->m_pkthdr.len);
 813                                 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
 814                         }
 815                         pc = usbd_xfer_get_frame(xfer, 0);
 816                         usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
 817                         usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
 818                             m->m_pkthdr.len);
 819
 820                         vap = data->ni->ni_vap;
 821                         if (ieee80211_radiotap_active_vap(vap)) {
 822                                 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
 823
 824                                 tap->wt_flags = 0;
 825                                 tap->wt_rate = data->rate;
 826                                 tap->wt_antenna = sc->tx_ant;
 827
 828                                 ieee80211_radiotap_tx(vap, m);
 829                         }
 830
 831                         /* align end on a 4-bytes boundary */
 832                         len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
 833                         if ((len % 64) == 0)
 834                                 len += 4;
 835
 836                         DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
 837                             m->m_pkthdr.len, len);
 838
 839                         usbd_xfer_set_frame_len(xfer, 0, len);
 840                         usbd_xfer_set_priv(xfer, data);
 841
 842                         usbd_transfer_submit(xfer);
 843                 }
 844                 RUM_UNLOCK(sc);
 845                 rum_start(ifp);
 846                 RUM_LOCK(sc);
 847                 break;
 848
 849         default:                        /* Error */
 850                 DPRINTFN(11, "transfer error, %s\n",
 851                     usbd_errstr(error));
 852
 853                 ifp->if_oerrors++;
 854                 data = usbd_xfer_get_priv(xfer);
 855                 if (data != NULL) {
 856                         rum_tx_free(data, error);
 857                         usbd_xfer_set_priv(xfer, NULL);
 858                 }
 859
 860                 if (error != USB_ERR_CANCELLED) {
 861                         if (error == USB_ERR_TIMEOUT)
 862                                 device_printf(sc->sc_dev, "device timeout\n");
 863
 864                         /*
 865                          * Try to clear stall first, also if other
 866                          * errors occur, hence clearing stall
 867                          * introduces a 50 ms delay:
 868                          */
 869                         usbd_xfer_set_stall(xfer);
 870                         goto tr_setup;
 871                 }
 872                 break;
 873         }
 874 }
 875
 876 static void
 877 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 878 {
 879         struct rum_softc *sc = usbd_xfer_softc(xfer);
 880         struct ifnet *ifp = sc->sc_ifp;
 881         struct ieee80211com *ic = ifp->if_l2com;
 882         struct ieee80211_node *ni;
 883         struct mbuf *m = NULL;
 884         struct usb_page_cache *pc;
 885         uint32_t flags;
 886         uint8_t rssi = 0;
 887         int len;
 888
 889         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 890
 891         switch (USB_GET_STATE(xfer)) {
 892         case USB_ST_TRANSFERRED:
 893
 894                 DPRINTFN(15, "rx done, actlen=%d\n", len);
 895
 896                 if (len < (int)(RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN)) {
 897                         DPRINTF("%s: xfer too short %d\n",
 898                             device_get_nameunit(sc->sc_dev), len);
 899                         ifp->if_ierrors++;
 900                         goto tr_setup;
 901                 }
 902
 903                 len -= RT2573_RX_DESC_SIZE;
 904                 pc = usbd_xfer_get_frame(xfer, 0);
 905                 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
 906
 907                 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
 908                 flags = le32toh(sc->sc_rx_desc.flags);
 909                 if (flags & RT2573_RX_CRC_ERROR) {
 910                         /*
 911                          * This should not happen since we did not
 912                          * request to receive those frames when we
 913                          * filled RUM_TXRX_CSR2:
 914                          */
 915                         DPRINTFN(5, "PHY or CRC error\n");
 916                         ifp->if_ierrors++;
 917                         goto tr_setup;
 918                 }
 919
 920                 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 921                 if (m == NULL) {
 922                         DPRINTF("could not allocate mbuf\n");
 923                         ifp->if_ierrors++;
 924                         goto tr_setup;
 925                 }
 926                 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
 927                     mtod(m, uint8_t *), len);
 928
 929                 /* finalize mbuf */
 930                 m->m_pkthdr.rcvif = ifp;
 931                 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
 932
 933                 if (ieee80211_radiotap_active(ic)) {
 934                         struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
 935
 936                         /* XXX read tsf */
 937                         tap->wr_flags = 0;
 938                         tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
 939                             (flags & RT2573_RX_OFDM) ?
 940                             IEEE80211_T_OFDM : IEEE80211_T_CCK);
 941                         tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
 942                         tap->wr_antnoise = RT2573_NOISE_FLOOR;
 943                         tap->wr_antenna = sc->rx_ant;
 944                 }
 945                 /* FALLTHROUGH */
 946         case USB_ST_SETUP:
 947 tr_setup:
 948                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 949                 usbd_transfer_submit(xfer);
 950
 951                 /*
 952                  * At the end of a USB callback it is always safe to unlock
 953                  * the private mutex of a device! That is why we do the
 954                  * "ieee80211_input" here, and not some lines up!
 955                  */
 956                 RUM_UNLOCK(sc);
 957                 if (m) {
 958                         ni = ieee80211_find_rxnode(ic,
 959                             mtod(m, struct ieee80211_frame_min *));
 960                         if (ni != NULL) {
 961                                 (void) ieee80211_input(ni, m, rssi,
 962                                     RT2573_NOISE_FLOOR);
 963                                 ieee80211_free_node(ni);
 964                         } else
 965                                 (void) ieee80211_input_all(ic, m, rssi,
 966                                     RT2573_NOISE_FLOOR);
 967                 }
 968                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
 969                     !IFQ_IS_EMPTY(&ifp->if_snd))
 970                         rum_start(ifp);
 971                 RUM_LOCK(sc);
 972                 return;
 973
 974         default:                        /* Error */
 975                 if (error != USB_ERR_CANCELLED) {
 976                         /* try to clear stall first */
 977                         usbd_xfer_set_stall(xfer);
 978                         goto tr_setup;
 979                 }
 980                 return;
 981         }
 982 }
 983
 984 static uint8_t
 985 rum_plcp_signal(int rate)
 986 {
 987         switch (rate) {
 988         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
 989         case 12:        return 0xb;
 990         case 18:        return 0xf;
 991         case 24:        return 0xa;
 992         case 36:        return 0xe;
 993         case 48:        return 0x9;
 994         case 72:        return 0xd;
 995         case 96:        return 0x8;
 996         case 108:       return 0xc;
 997
 998         /* CCK rates (NB: not IEEE std, device-specific) */
 999         case 2:         return 0x0;
1000         case 4:         return 0x1;
1001         case 11:        return 0x2;
1002         case 22:        return 0x3;
1003         }
1004         return 0xff;            /* XXX unsupported/unknown rate */
1005 }
1006
1007 static void
1008 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
1009     uint32_t flags, uint16_t xflags, int len, int rate)
1010 {
1011         struct ifnet *ifp = sc->sc_ifp;
1012         struct ieee80211com *ic = ifp->if_l2com;
1013         uint16_t plcp_length;
1014         int remainder;
1015
1016         desc->flags = htole32(flags);
1017         desc->flags |= htole32(RT2573_TX_VALID);
1018         desc->flags |= htole32(len << 16);
1019
1020         desc->xflags = htole16(xflags);
1021
1022         desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) |
1023             RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10));
1024
1025         /* setup PLCP fields */
1026         desc->plcp_signal  = rum_plcp_signal(rate);
1027         desc->plcp_service = 4;
1028
1029         len += IEEE80211_CRC_LEN;
1030         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1031                 desc->flags |= htole32(RT2573_TX_OFDM);
1032
1033                 plcp_length = len & 0xfff;
1034                 desc->plcp_length_hi = plcp_length >> 6;
1035                 desc->plcp_length_lo = plcp_length & 0x3f;
1036         } else {
1037                 plcp_length = (16 * len + rate - 1) / rate;
1038                 if (rate == 22) {
1039                         remainder = (16 * len) % 22;
1040                         if (remainder != 0 && remainder < 7)
1041                                 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1042                 }
1043                 desc->plcp_length_hi = plcp_length >> 8;
1044                 desc->plcp_length_lo = plcp_length & 0xff;
1045
1046                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1047                         desc->plcp_signal |= 0x08;
1048         }
1049 }
1050
1051 static int
1052 rum_sendprot(struct rum_softc *sc,
1053     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1054 {
1055         struct ieee80211com *ic = ni->ni_ic;
1056         const struct ieee80211_frame *wh;
1057         struct rum_tx_data *data;
1058         struct mbuf *mprot;
1059         int protrate, ackrate, pktlen, flags, isshort;
1060         uint16_t dur;
1061
1062         RUM_LOCK_ASSERT(sc, MA_OWNED);
1063         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1064             ("protection %d", prot));
1065
1066         wh = mtod(m, const struct ieee80211_frame *);
1067         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1068
1069         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1070         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1071
1072         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1073         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1074             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1075         flags = RT2573_TX_MORE_FRAG;
1076         if (prot == IEEE80211_PROT_RTSCTS) {
1077                 /* NB: CTS is the same size as an ACK */
1078                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1079                 flags |= RT2573_TX_NEED_ACK;
1080                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1081         } else {
1082                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1083         }
1084         if (mprot == NULL) {
1085                 /* XXX stat + msg */
1086                 return (ENOBUFS);
1087         }
1088         data = STAILQ_FIRST(&sc->tx_free);
1089         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1090         sc->tx_nfree--;
1091
1092         data->m = mprot;
1093         data->ni = ieee80211_ref_node(ni);
1094         data->rate = protrate;
1095         rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate);
1096
1097         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1098         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1099
1100         return 0;
1101 }
1102
1103 static int
1104 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1105 {
1106         struct ieee80211vap *vap = ni->ni_vap;
1107         struct ifnet *ifp = sc->sc_ifp;
1108         struct ieee80211com *ic = ifp->if_l2com;
1109         struct rum_tx_data *data;
1110         struct ieee80211_frame *wh;
1111         const struct ieee80211_txparam *tp;
1112         struct ieee80211_key *k;
1113         uint32_t flags = 0;
1114         uint16_t dur;
1115
1116         RUM_LOCK_ASSERT(sc, MA_OWNED);
1117
1118         data = STAILQ_FIRST(&sc->tx_free);
1119         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1120         sc->tx_nfree--;
1121
1122         wh = mtod(m0, struct ieee80211_frame *);
1123         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1124                 k = ieee80211_crypto_encap(ni, m0);
1125                 if (k == NULL) {
1126                         m_freem(m0);
1127                         return ENOBUFS;
1128                 }
1129                 wh = mtod(m0, struct ieee80211_frame *);
1130         }
1131
1132         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1133
1134         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1135                 flags |= RT2573_TX_NEED_ACK;
1136
1137                 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1138                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1139                 USETW(wh->i_dur, dur);
1140
1141                 /* tell hardware to add timestamp for probe responses */
1142                 if ((wh->i_fc[0] &
1143                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1144                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1145                         flags |= RT2573_TX_TIMESTAMP;
1146         }
1147
1148         data->m = m0;
1149         data->ni = ni;
1150         data->rate = tp->mgmtrate;
1151
1152         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate);
1153
1154         DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1155             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1156
1157         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1158         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1159
1160         return (0);
1161 }
1162
1163 static int
1164 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1165     const struct ieee80211_bpf_params *params)
1166 {
1167         struct ieee80211com *ic = ni->ni_ic;
1168         struct rum_tx_data *data;
1169         uint32_t flags;
1170         int rate, error;
1171
1172         RUM_LOCK_ASSERT(sc, MA_OWNED);
1173         KASSERT(params != NULL, ("no raw xmit params"));
1174
1175         rate = params->ibp_rate0;
1176         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1177                 m_freem(m0);
1178                 return EINVAL;
1179         }
1180         flags = 0;
1181         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1182                 flags |= RT2573_TX_NEED_ACK;
1183         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1184                 error = rum_sendprot(sc, m0, ni,
1185                     params->ibp_flags & IEEE80211_BPF_RTS ?
1186                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1187                     rate);
1188                 if (error || sc->tx_nfree == 0) {
1189                         m_freem(m0);
1190                         return ENOBUFS;
1191                 }
1192                 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1193         }
1194
1195         data = STAILQ_FIRST(&sc->tx_free);
1196         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1197         sc->tx_nfree--;
1198
1199         data->m = m0;
1200         data->ni = ni;
1201         data->rate = rate;
1202
1203         /* XXX need to setup descriptor ourself */
1204         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1205
1206         DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1207             m0->m_pkthdr.len, rate);
1208
1209         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1210         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1211
1212         return 0;
1213 }
1214
1215 static int
1216 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1217 {
1218         struct ieee80211vap *vap = ni->ni_vap;
1219         struct ifnet *ifp = sc->sc_ifp;
1220         struct ieee80211com *ic = ifp->if_l2com;
1221         struct rum_tx_data *data;
1222         struct ieee80211_frame *wh;
1223         const struct ieee80211_txparam *tp;
1224         struct ieee80211_key *k;
1225         uint32_t flags = 0;
1226         uint16_t dur;
1227         int error, rate;
1228
1229         RUM_LOCK_ASSERT(sc, MA_OWNED);
1230
1231         wh = mtod(m0, struct ieee80211_frame *);
1232
1233         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1234         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1235                 rate = tp->mcastrate;
1236         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1237                 rate = tp->ucastrate;
1238         else
1239                 rate = ni->ni_txrate;
1240
1241         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1242                 k = ieee80211_crypto_encap(ni, m0);
1243                 if (k == NULL) {
1244                         m_freem(m0);
1245                         return ENOBUFS;
1246                 }
1247
1248                 /* packet header may have moved, reset our local pointer */
1249                 wh = mtod(m0, struct ieee80211_frame *);
1250         }
1251
1252         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1253                 int prot = IEEE80211_PROT_NONE;
1254                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1255                         prot = IEEE80211_PROT_RTSCTS;
1256                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1257                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1258                         prot = ic->ic_protmode;
1259                 if (prot != IEEE80211_PROT_NONE) {
1260                         error = rum_sendprot(sc, m0, ni, prot, rate);
1261                         if (error || sc->tx_nfree == 0) {
1262                                 m_freem(m0);
1263                                 return ENOBUFS;
1264                         }
1265                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1266                 }
1267         }
1268
1269         data = STAILQ_FIRST(&sc->tx_free);
1270         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1271         sc->tx_nfree--;
1272
1273         data->m = m0;
1274         data->ni = ni;
1275         data->rate = rate;
1276
1277         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1278                 flags |= RT2573_TX_NEED_ACK;
1279                 flags |= RT2573_TX_MORE_FRAG;
1280
1281                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1282                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1283                 USETW(wh->i_dur, dur);
1284         }
1285
1286         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1287
1288         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1289             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1290
1291         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1292         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1293
1294         return 0;
1295 }
1296
1297 static void
1298 rum_start(struct ifnet *ifp)
1299 {
1300         struct rum_softc *sc = ifp->if_softc;
1301         struct ieee80211_node *ni;
1302         struct mbuf *m;
1303
1304         RUM_LOCK(sc);
1305         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1306                 RUM_UNLOCK(sc);
1307                 return;
1308         }
1309         for (;;) {
1310                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1311                 if (m == NULL)
1312                         break;
1313                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1314                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1315                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1316                         break;
1317                 }
1318                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1319                 if (rum_tx_data(sc, m, ni) != 0) {
1320                         ieee80211_free_node(ni);
1321                         ifp->if_oerrors++;
1322                         break;
1323                 }
1324         }
1325         RUM_UNLOCK(sc);
1326 }
1327
1328 static int
1329 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1330 {
1331         struct rum_softc *sc = ifp->if_softc;
1332         struct ieee80211com *ic = ifp->if_l2com;
1333         struct ifreq *ifr = (struct ifreq *) data;
1334         int error;
1335         int startall = 0;
1336
1337         RUM_LOCK(sc);
1338         error = sc->sc_detached ? ENXIO : 0;
1339         RUM_UNLOCK(sc);
1340         if (error)
1341                 return (error);
1342
1343         switch (cmd) {
1344         case SIOCSIFFLAGS:
1345                 RUM_LOCK(sc);
1346                 if (ifp->if_flags & IFF_UP) {
1347                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1348                                 rum_init_locked(sc);
1349                                 startall = 1;
1350                         } else
1351                                 rum_setpromisc(sc);
1352                 } else {
1353                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1354                                 rum_stop(sc);
1355                 }
1356                 RUM_UNLOCK(sc);
1357                 if (startall)
1358                         ieee80211_start_all(ic);
1359                 break;
1360         case SIOCGIFMEDIA:
1361                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1362                 break;
1363         case SIOCGIFADDR:
1364                 error = ether_ioctl(ifp, cmd, data);
1365                 break;
1366         default:
1367                 error = EINVAL;
1368                 break;
1369         }
1370         return error;
1371 }
1372
1373 static void
1374 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1375 {
1376         struct usb_device_request req;
1377         usb_error_t error;
1378
1379         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1380         req.bRequest = RT2573_READ_EEPROM;
1381         USETW(req.wValue, 0);
1382         USETW(req.wIndex, addr);
1383         USETW(req.wLength, len);
1384
1385         error = rum_do_request(sc, &req, buf);
1386         if (error != 0) {
1387                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1388                     usbd_errstr(error));
1389         }
1390 }
1391
1392 static uint32_t
1393 rum_read(struct rum_softc *sc, uint16_t reg)
1394 {
1395         uint32_t val;
1396
1397         rum_read_multi(sc, reg, &val, sizeof val);
1398
1399         return le32toh(val);
1400 }
1401
1402 static void
1403 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1404 {
1405         struct usb_device_request req;
1406         usb_error_t error;
1407
1408         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1409         req.bRequest = RT2573_READ_MULTI_MAC;
1410         USETW(req.wValue, 0);
1411         USETW(req.wIndex, reg);
1412         USETW(req.wLength, len);
1413
1414         error = rum_do_request(sc, &req, buf);
1415         if (error != 0) {
1416                 device_printf(sc->sc_dev,
1417                     "could not multi read MAC register: %s\n",
1418                     usbd_errstr(error));
1419         }
1420 }
1421
1422 static usb_error_t
1423 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1424 {
1425         uint32_t tmp = htole32(val);
1426
1427         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1428 }
1429
1430 static usb_error_t
1431 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1432 {
1433         struct usb_device_request req;
1434         usb_error_t error;
1435         size_t offset;
1436
1437         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1438         req.bRequest = RT2573_WRITE_MULTI_MAC;
1439         USETW(req.wValue, 0);
1440
1441         /* write at most 64 bytes at a time */
1442         for (offset = 0; offset < len; offset += 64) {
1443                 USETW(req.wIndex, reg + offset);
1444                 USETW(req.wLength, MIN(len - offset, 64));
1445
1446                 error = rum_do_request(sc, &req, (char *)buf + offset);
1447                 if (error != 0) {
1448                         device_printf(sc->sc_dev,
1449                             "could not multi write MAC register: %s\n",
1450                             usbd_errstr(error));
1451                         return (error);
1452                 }
1453         }
1454
1455         return (USB_ERR_NORMAL_COMPLETION);
1456 }
1457
1458 static void
1459 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1460 {
1461         uint32_t tmp;
1462         int ntries;
1463
1464         DPRINTFN(2, "reg=0x%08x\n", reg);
1465
1466         for (ntries = 0; ntries < 100; ntries++) {
1467                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1468                         break;
1469                 if (rum_pause(sc, hz / 100))
1470                         break;
1471         }
1472         if (ntries == 100) {
1473                 device_printf(sc->sc_dev, "could not write to BBP\n");
1474                 return;
1475         }
1476
1477         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1478         rum_write(sc, RT2573_PHY_CSR3, tmp);
1479 }
1480
1481 static uint8_t
1482 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1483 {
1484         uint32_t val;
1485         int ntries;
1486
1487         DPRINTFN(2, "reg=0x%08x\n", reg);
1488
1489         for (ntries = 0; ntries < 100; ntries++) {
1490                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1491                         break;
1492                 if (rum_pause(sc, hz / 100))
1493                         break;
1494         }
1495         if (ntries == 100) {
1496                 device_printf(sc->sc_dev, "could not read BBP\n");
1497                 return 0;
1498         }
1499
1500         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1501         rum_write(sc, RT2573_PHY_CSR3, val);
1502
1503         for (ntries = 0; ntries < 100; ntries++) {
1504                 val = rum_read(sc, RT2573_PHY_CSR3);
1505                 if (!(val & RT2573_BBP_BUSY))
1506                         return val & 0xff;
1507                 if (rum_pause(sc, hz / 100))
1508                         break;
1509         }
1510
1511         device_printf(sc->sc_dev, "could not read BBP\n");
1512         return 0;
1513 }
1514
1515 static void
1516 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1517 {
1518         uint32_t tmp;
1519         int ntries;
1520
1521         for (ntries = 0; ntries < 100; ntries++) {
1522                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1523                         break;
1524                 if (rum_pause(sc, hz / 100))
1525                         break;
1526         }
1527         if (ntries == 100) {
1528                 device_printf(sc->sc_dev, "could not write to RF\n");
1529                 return;
1530         }
1531
1532         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1533             (reg & 3);
1534         rum_write(sc, RT2573_PHY_CSR4, tmp);
1535
1536         /* remember last written value in sc */
1537         sc->rf_regs[reg] = val;
1538
1539         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1540 }
1541
1542 static void
1543 rum_select_antenna(struct rum_softc *sc)
1544 {
1545         uint8_t bbp4, bbp77;
1546         uint32_t tmp;
1547
1548         bbp4  = rum_bbp_read(sc, 4);
1549         bbp77 = rum_bbp_read(sc, 77);
1550
1551         /* TBD */
1552
1553         /* make sure Rx is disabled before switching antenna */
1554         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1555         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1556
1557         rum_bbp_write(sc,  4, bbp4);
1558         rum_bbp_write(sc, 77, bbp77);
1559
1560         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1561 }
1562
1563 /*
1564  * Enable multi-rate retries for frames sent at OFDM rates.
1565  * In 802.11b/g mode, allow fallback to CCK rates.
1566  */
1567 static void
1568 rum_enable_mrr(struct rum_softc *sc)
1569 {
1570         struct ifnet *ifp = sc->sc_ifp;
1571         struct ieee80211com *ic = ifp->if_l2com;
1572         uint32_t tmp;
1573
1574         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1575
1576         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1577         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1578                 tmp |= RT2573_MRR_CCK_FALLBACK;
1579         tmp |= RT2573_MRR_ENABLED;
1580
1581         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1582 }
1583
1584 static void
1585 rum_set_txpreamble(struct rum_softc *sc)
1586 {
1587         struct ifnet *ifp = sc->sc_ifp;
1588         struct ieee80211com *ic = ifp->if_l2com;
1589         uint32_t tmp;
1590
1591         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1592
1593         tmp &= ~RT2573_SHORT_PREAMBLE;
1594         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1595                 tmp |= RT2573_SHORT_PREAMBLE;
1596
1597         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1598 }
1599
1600 static void
1601 rum_set_basicrates(struct rum_softc *sc)
1602 {
1603         struct ifnet *ifp = sc->sc_ifp;
1604         struct ieee80211com *ic = ifp->if_l2com;
1605
1606         /* update basic rate set */
1607         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1608                 /* 11b basic rates: 1, 2Mbps */
1609                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1610         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1611                 /* 11a basic rates: 6, 12, 24Mbps */
1612                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1613         } else {
1614                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1615                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1616         }
1617 }
1618
1619 /*
1620  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1621  * driver.
1622  */
1623 static void
1624 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1625 {
1626         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1627         uint32_t tmp;
1628
1629         /* update all BBP registers that depend on the band */
1630         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1631         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1632         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1633                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1634                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1635         }
1636         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1637             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1638                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1639         }
1640
1641         sc->bbp17 = bbp17;
1642         rum_bbp_write(sc,  17, bbp17);
1643         rum_bbp_write(sc,  96, bbp96);
1644         rum_bbp_write(sc, 104, bbp104);
1645
1646         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1647             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1648                 rum_bbp_write(sc, 75, 0x80);
1649                 rum_bbp_write(sc, 86, 0x80);
1650                 rum_bbp_write(sc, 88, 0x80);
1651         }
1652
1653         rum_bbp_write(sc, 35, bbp35);
1654         rum_bbp_write(sc, 97, bbp97);
1655         rum_bbp_write(sc, 98, bbp98);
1656
1657         tmp = rum_read(sc, RT2573_PHY_CSR0);
1658         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1659         if (IEEE80211_IS_CHAN_2GHZ(c))
1660                 tmp |= RT2573_PA_PE_2GHZ;
1661         else
1662                 tmp |= RT2573_PA_PE_5GHZ;
1663         rum_write(sc, RT2573_PHY_CSR0, tmp);
1664 }
1665
1666 static void
1667 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1668 {
1669         struct ifnet *ifp = sc->sc_ifp;
1670         struct ieee80211com *ic = ifp->if_l2com;
1671         const struct rfprog *rfprog;
1672         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1673         int8_t power;
1674         int i, chan;
1675
1676         chan = ieee80211_chan2ieee(ic, c);
1677         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1678                 return;
1679
1680         /* select the appropriate RF settings based on what EEPROM says */
1681         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1682                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1683
1684         /* find the settings for this channel (we know it exists) */
1685         for (i = 0; rfprog[i].chan != chan; i++);
1686
1687         power = sc->txpow[i];
1688         if (power < 0) {
1689                 bbp94 += power;
1690                 power = 0;
1691         } else if (power > 31) {
1692                 bbp94 += power - 31;
1693                 power = 31;
1694         }
1695
1696         /*
1697          * If we are switching from the 2GHz band to the 5GHz band or
1698          * vice-versa, BBP registers need to be reprogrammed.
1699          */
1700         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1701                 rum_select_band(sc, c);
1702                 rum_select_antenna(sc);
1703         }
1704         ic->ic_curchan = c;
1705
1706         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1707         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1708         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1709         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1710
1711         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1712         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1713         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1714         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1715
1716         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1717         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1718         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1719         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1720
1721         rum_pause(sc, hz / 100);
1722
1723         /* enable smart mode for MIMO-capable RFs */
1724         bbp3 = rum_bbp_read(sc, 3);
1725
1726         bbp3 &= ~RT2573_SMART_MODE;
1727         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1728                 bbp3 |= RT2573_SMART_MODE;
1729
1730         rum_bbp_write(sc, 3, bbp3);
1731
1732         if (bbp94 != RT2573_BBPR94_DEFAULT)
1733                 rum_bbp_write(sc, 94, bbp94);
1734
1735         /* give the chip some extra time to do the switchover */
1736         rum_pause(sc, hz / 100);
1737 }
1738
1739 /*
1740  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1741  * and HostAP operating modes.
1742  */
1743 static void
1744 rum_enable_tsf_sync(struct rum_softc *sc)
1745 {
1746         struct ifnet *ifp = sc->sc_ifp;
1747         struct ieee80211com *ic = ifp->if_l2com;
1748         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1749         uint32_t tmp;
1750
1751         if (vap->iv_opmode != IEEE80211_M_STA) {
1752                 /*
1753                  * Change default 16ms TBTT adjustment to 8ms.
1754                  * Must be done before enabling beacon generation.
1755                  */
1756                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1757         }
1758
1759         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1760
1761         /* set beacon interval (in 1/16ms unit) */
1762         tmp |= vap->iv_bss->ni_intval * 16;
1763
1764         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1765         if (vap->iv_opmode == IEEE80211_M_STA)
1766                 tmp |= RT2573_TSF_MODE(1);
1767         else
1768                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1769
1770         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1771 }
1772
1773 static void
1774 rum_enable_tsf(struct rum_softc *sc)
1775 {
1776         rum_write(sc, RT2573_TXRX_CSR9,
1777             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1778             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1779 }
1780
1781 static void
1782 rum_update_slot(struct ifnet *ifp)
1783 {
1784         struct rum_softc *sc = ifp->if_softc;
1785         struct ieee80211com *ic = ifp->if_l2com;
1786         uint8_t slottime;
1787         uint32_t tmp;
1788
1789         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1790
1791         tmp = rum_read(sc, RT2573_MAC_CSR9);
1792         tmp = (tmp & ~0xff) | slottime;
1793         rum_write(sc, RT2573_MAC_CSR9, tmp);
1794
1795         DPRINTF("setting slot time to %uus\n", slottime);
1796 }
1797
1798 static void
1799 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1800 {
1801         uint32_t tmp;
1802
1803         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1804         rum_write(sc, RT2573_MAC_CSR4, tmp);
1805
1806         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1807         rum_write(sc, RT2573_MAC_CSR5, tmp);
1808 }
1809
1810 static void
1811 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1812 {
1813         uint32_t tmp;
1814
1815         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1816         rum_write(sc, RT2573_MAC_CSR2, tmp);
1817
1818         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1819         rum_write(sc, RT2573_MAC_CSR3, tmp);
1820 }
1821
1822 static void
1823 rum_setpromisc(struct rum_softc *sc)
1824 {
1825         struct ifnet *ifp = sc->sc_ifp;
1826         uint32_t tmp;
1827
1828         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1829
1830         tmp &= ~RT2573_DROP_NOT_TO_ME;
1831         if (!(ifp->if_flags & IFF_PROMISC))
1832                 tmp |= RT2573_DROP_NOT_TO_ME;
1833
1834         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1835
1836         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1837             "entering" : "leaving");
1838 }
1839
1840 static void
1841 rum_update_promisc(struct ifnet *ifp)
1842 {
1843         struct rum_softc *sc = ifp->if_softc;
1844
1845         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1846                 return;
1847
1848         RUM_LOCK(sc);
1849         rum_setpromisc(sc);
1850         RUM_UNLOCK(sc);
1851 }
1852
1853 static void
1854 rum_update_mcast(struct ifnet *ifp)
1855 {
1856         static int warning_printed;
1857
1858         if (warning_printed == 0) {
1859                 if_printf(ifp, "need to implement %s\n", __func__);
1860                 warning_printed = 1;
1861         }
1862 }
1863
1864 static const char *
1865 rum_get_rf(int rev)
1866 {
1867         switch (rev) {
1868         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1869         case RT2573_RF_2528:    return "RT2528";
1870         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1871         case RT2573_RF_5226:    return "RT5226";
1872         default:                return "unknown";
1873         }
1874 }
1875
1876 static void
1877 rum_read_eeprom(struct rum_softc *sc)
1878 {
1879         uint16_t val;
1880 #ifdef RUM_DEBUG
1881         int i;
1882 #endif
1883
1884         /* read MAC address */
1885         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1886
1887         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1888         val = le16toh(val);
1889         sc->rf_rev =   (val >> 11) & 0x1f;
1890         sc->hw_radio = (val >> 10) & 0x1;
1891         sc->rx_ant =   (val >> 4)  & 0x3;
1892         sc->tx_ant =   (val >> 2)  & 0x3;
1893         sc->nb_ant =   val & 0x3;
1894
1895         DPRINTF("RF revision=%d\n", sc->rf_rev);
1896
1897         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1898         val = le16toh(val);
1899         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1900         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1901
1902         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1903             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1904
1905         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1906         val = le16toh(val);
1907         if ((val & 0xff) != 0xff)
1908                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1909
1910         /* Only [-10, 10] is valid */
1911         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1912                 sc->rssi_2ghz_corr = 0;
1913
1914         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1915         val = le16toh(val);
1916         if ((val & 0xff) != 0xff)
1917                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1918
1919         /* Only [-10, 10] is valid */
1920         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1921                 sc->rssi_5ghz_corr = 0;
1922
1923         if (sc->ext_2ghz_lna)
1924                 sc->rssi_2ghz_corr -= 14;
1925         if (sc->ext_5ghz_lna)
1926                 sc->rssi_5ghz_corr -= 14;
1927
1928         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1929             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1930
1931         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1932         val = le16toh(val);
1933         if ((val & 0xff) != 0xff)
1934                 sc->rffreq = val & 0xff;
1935
1936         DPRINTF("RF freq=%d\n", sc->rffreq);
1937
1938         /* read Tx power for all a/b/g channels */
1939         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1940         /* XXX default Tx power for 802.11a channels */
1941         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1942 #ifdef RUM_DEBUG
1943         for (i = 0; i < 14; i++)
1944                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1945 #endif
1946
1947         /* read default values for BBP registers */
1948         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1949 #ifdef RUM_DEBUG
1950         for (i = 0; i < 14; i++) {
1951                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1952                         continue;
1953                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1954                     sc->bbp_prom[i].val);
1955         }
1956 #endif
1957 }
1958
1959 static int
1960 rum_bbp_init(struct rum_softc *sc)
1961 {
1962         int i, ntries;
1963
1964         /* wait for BBP to be ready */
1965         for (ntries = 0; ntries < 100; ntries++) {
1966                 const uint8_t val = rum_bbp_read(sc, 0);
1967                 if (val != 0 && val != 0xff)
1968                         break;
1969                 if (rum_pause(sc, hz / 100))
1970                         break;
1971         }
1972         if (ntries == 100) {
1973                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1974                 return EIO;
1975         }
1976
1977         /* initialize BBP registers to default values */
1978         for (i = 0; i < N(rum_def_bbp); i++)
1979                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1980
1981         /* write vendor-specific BBP values (from EEPROM) */
1982         for (i = 0; i < 16; i++) {
1983                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1984                         continue;
1985                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
1986         }
1987
1988         return 0;
1989 }
1990
1991 static void
1992 rum_init_locked(struct rum_softc *sc)
1993 {
1994         struct ifnet *ifp = sc->sc_ifp;
1995         struct ieee80211com *ic = ifp->if_l2com;
1996         uint32_t tmp;
1997         usb_error_t error;
1998         int i, ntries;
1999
2000         RUM_LOCK_ASSERT(sc, MA_OWNED);
2001
2002         rum_stop(sc);
2003
2004         /* initialize MAC registers to default values */
2005         for (i = 0; i < N(rum_def_mac); i++)
2006                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
2007
2008         /* set host ready */
2009         rum_write(sc, RT2573_MAC_CSR1, 3);
2010         rum_write(sc, RT2573_MAC_CSR1, 0);
2011
2012         /* wait for BBP/RF to wakeup */
2013         for (ntries = 0; ntries < 100; ntries++) {
2014                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
2015                         break;
2016                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
2017                 if (rum_pause(sc, hz / 100))
2018                         break;
2019         }
2020         if (ntries == 100) {
2021                 device_printf(sc->sc_dev,
2022                     "timeout waiting for BBP/RF to wakeup\n");
2023                 goto fail;
2024         }
2025
2026         if ((error = rum_bbp_init(sc)) != 0)
2027                 goto fail;
2028
2029         /* select default channel */
2030         rum_select_band(sc, ic->ic_curchan);
2031         rum_select_antenna(sc);
2032         rum_set_chan(sc, ic->ic_curchan);
2033
2034         /* clear STA registers */
2035         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2036
2037         rum_set_macaddr(sc, IF_LLADDR(ifp));
2038
2039         /* initialize ASIC */
2040         rum_write(sc, RT2573_MAC_CSR1, 4);
2041
2042         /*
2043          * Allocate Tx and Rx xfer queues.
2044          */
2045         rum_setup_tx_list(sc);
2046
2047         /* update Rx filter */
2048         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2049
2050         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2051         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2052                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2053                        RT2573_DROP_ACKCTS;
2054                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2055                         tmp |= RT2573_DROP_TODS;
2056                 if (!(ifp->if_flags & IFF_PROMISC))
2057                         tmp |= RT2573_DROP_NOT_TO_ME;
2058         }
2059         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2060
2061         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2062         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2063         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2064         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2065         return;
2066
2067 fail:   rum_stop(sc);
2068 #undef N
2069 }
2070
2071 static void
2072 rum_init(void *priv)
2073 {
2074         struct rum_softc *sc = priv;
2075         struct ifnet *ifp = sc->sc_ifp;
2076         struct ieee80211com *ic = ifp->if_l2com;
2077
2078         RUM_LOCK(sc);
2079         rum_init_locked(sc);
2080         RUM_UNLOCK(sc);
2081
2082         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2083                 ieee80211_start_all(ic);                /* start all vap's */
2084 }
2085
2086 static void
2087 rum_stop(struct rum_softc *sc)
2088 {
2089         struct ifnet *ifp = sc->sc_ifp;
2090         uint32_t tmp;
2091
2092         RUM_LOCK_ASSERT(sc, MA_OWNED);
2093
2094         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2095
2096         RUM_UNLOCK(sc);
2097
2098         /*
2099          * Drain the USB transfers, if not already drained:
2100          */
2101         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2102         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2103
2104         RUM_LOCK(sc);
2105
2106         rum_unsetup_tx_list(sc);
2107
2108         /* disable Rx */
2109         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2110         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2111
2112         /* reset ASIC */
2113         rum_write(sc, RT2573_MAC_CSR1, 3);
2114         rum_write(sc, RT2573_MAC_CSR1, 0);
2115 }
2116
2117 static void
2118 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2119 {
2120         struct usb_device_request req;
2121         uint16_t reg = RT2573_MCU_CODE_BASE;
2122         usb_error_t err;
2123
2124         /* copy firmware image into NIC */
2125         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2126                 err = rum_write(sc, reg, UGETDW(ucode));
2127                 if (err) {
2128                         /* firmware already loaded ? */
2129                         device_printf(sc->sc_dev, "Firmware load "
2130                             "failure! (ignored)\n");
2131                         break;
2132                 }
2133         }
2134
2135         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2136         req.bRequest = RT2573_MCU_CNTL;
2137         USETW(req.wValue, RT2573_MCU_RUN);
2138         USETW(req.wIndex, 0);
2139         USETW(req.wLength, 0);
2140
2141         err = rum_do_request(sc, &req, NULL);
2142         if (err != 0) {
2143                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2144                     usbd_errstr(err));
2145         }
2146
2147         /* give the chip some time to boot */
2148         rum_pause(sc, hz / 8);
2149 }
2150
2151 static void
2152 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2153 {
2154         struct ieee80211com *ic = vap->iv_ic;
2155         const struct ieee80211_txparam *tp;
2156         struct rum_tx_desc desc;
2157         struct mbuf *m0;
2158
2159         if (vap->iv_bss->ni_chan == IEEE80211_CHAN_ANYC)
2160                 return;
2161         if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2162                 return;
2163
2164         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2165         if (m0 == NULL)
2166                 return;
2167
2168         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2169         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2170             m0->m_pkthdr.len, tp->mgmtrate);
2171
2172         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2173         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2174
2175         /* copy beacon header and payload into NIC memory */
2176         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2177             m0->m_pkthdr.len);
2178
2179         m_freem(m0);
2180 }
2181
2182 static int
2183 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2184     const struct ieee80211_bpf_params *params)
2185 {
2186         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2187         struct rum_softc *sc = ifp->if_softc;
2188
2189         RUM_LOCK(sc);
2190         /* prevent management frames from being sent if we're not ready */
2191         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2192                 RUM_UNLOCK(sc);
2193                 m_freem(m);
2194                 ieee80211_free_node(ni);
2195                 return ENETDOWN;
2196         }
2197         if (sc->tx_nfree < RUM_TX_MINFREE) {
2198                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2199                 RUM_UNLOCK(sc);
2200                 m_freem(m);
2201                 ieee80211_free_node(ni);
2202                 return EIO;
2203         }
2204
2205         ifp->if_opackets++;
2206
2207         if (params == NULL) {
2208                 /*
2209                  * Legacy path; interpret frame contents to decide
2210                  * precisely how to send the frame.
2211                  */
2212                 if (rum_tx_mgt(sc, m, ni) != 0)
2213                         goto bad;
2214         } else {
2215                 /*
2216                  * Caller supplied explicit parameters to use in
2217                  * sending the frame.
2218                  */
2219                 if (rum_tx_raw(sc, m, ni, params) != 0)
2220                         goto bad;
2221         }
2222         RUM_UNLOCK(sc);
2223
2224         return 0;
2225 bad:
2226         ifp->if_oerrors++;
2227         RUM_UNLOCK(sc);
2228         ieee80211_free_node(ni);
2229         return EIO;
2230 }
2231
2232 static void
2233 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2234 {
2235         struct ieee80211vap *vap = ni->ni_vap;
2236         struct rum_vap *rvp = RUM_VAP(vap);
2237
2238         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2239         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2240
2241         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2242 }
2243
2244 static void
2245 rum_ratectl_timeout(void *arg)
2246 {
2247         struct rum_vap *rvp = arg;
2248         struct ieee80211vap *vap = &rvp->vap;
2249         struct ieee80211com *ic = vap->iv_ic;
2250
2251         ieee80211_runtask(ic, &rvp->ratectl_task);
2252 }
2253
2254 static void
2255 rum_ratectl_task(void *arg, int pending)
2256 {
2257         struct rum_vap *rvp = arg;
2258         struct ieee80211vap *vap = &rvp->vap;
2259         struct ieee80211com *ic = vap->iv_ic;
2260         struct ifnet *ifp = ic->ic_ifp;
2261         struct rum_softc *sc = ifp->if_softc;
2262         struct ieee80211_node *ni;
2263         int ok, fail;
2264         int sum, retrycnt;
2265
2266         RUM_LOCK(sc);
2267         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2268         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2269
2270         ok = (le32toh(sc->sta[4]) >> 16) +      /* TX ok w/o retry */
2271             (le32toh(sc->sta[5]) & 0xffff);     /* TX ok w/ retry */
2272         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2273         sum = ok+fail;
2274         retrycnt = (le32toh(sc->sta[5]) & 0xffff) + fail;
2275
2276         ni = ieee80211_ref_node(vap->iv_bss);
2277         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2278         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2279         ieee80211_free_node(ni);
2280
2281         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2282
2283         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2284         RUM_UNLOCK(sc);
2285 }
2286
2287 static void
2288 rum_scan_start(struct ieee80211com *ic)
2289 {
2290         struct ifnet *ifp = ic->ic_ifp;
2291         struct rum_softc *sc = ifp->if_softc;
2292         uint32_t tmp;
2293
2294         RUM_LOCK(sc);
2295         /* abort TSF synchronization */
2296         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2297         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2298         rum_set_bssid(sc, ifp->if_broadcastaddr);
2299         RUM_UNLOCK(sc);
2300
2301 }
2302
2303 static void
2304 rum_scan_end(struct ieee80211com *ic)
2305 {
2306         struct rum_softc *sc = ic->ic_ifp->if_softc;
2307
2308         RUM_LOCK(sc);
2309         rum_enable_tsf_sync(sc);
2310         rum_set_bssid(sc, sc->sc_bssid);
2311         RUM_UNLOCK(sc);
2312
2313 }
2314
2315 static void
2316 rum_set_channel(struct ieee80211com *ic)
2317 {
2318         struct rum_softc *sc = ic->ic_ifp->if_softc;
2319
2320         RUM_LOCK(sc);
2321         rum_set_chan(sc, ic->ic_curchan);
2322         RUM_UNLOCK(sc);
2323 }
2324
2325 static int
2326 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2327 {
2328         struct ifnet *ifp = sc->sc_ifp;
2329         struct ieee80211com *ic = ifp->if_l2com;
2330         int lna, agc, rssi;
2331
2332         lna = (raw >> 5) & 0x3;
2333         agc = raw & 0x1f;
2334
2335         if (lna == 0) {
2336                 /*
2337                  * No RSSI mapping
2338                  *
2339                  * NB: Since RSSI is relative to noise floor, -1 is
2340                  *     adequate for caller to know error happened.
2341                  */
2342                 return -1;
2343         }
2344
2345         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2346
2347         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2348                 rssi += sc->rssi_2ghz_corr;
2349
2350                 if (lna == 1)
2351                         rssi -= 64;
2352                 else if (lna == 2)
2353                         rssi -= 74;
2354                 else if (lna == 3)
2355                         rssi -= 90;
2356         } else {
2357                 rssi += sc->rssi_5ghz_corr;
2358
2359                 if (!sc->ext_5ghz_lna && lna != 1)
2360                         rssi += 4;
2361
2362                 if (lna == 1)
2363                         rssi -= 64;
2364                 else if (lna == 2)
2365                         rssi -= 86;
2366                 else if (lna == 3)
2367                         rssi -= 100;
2368         }
2369         return rssi;
2370 }
2371
2372 static int
2373 rum_pause(struct rum_softc *sc, int timeout)
2374 {
2375
2376         usb_pause_mtx(&sc->sc_mtx, timeout);
2377         return (0);
2378 }
2379
2380 static device_method_t rum_methods[] = {
2381         /* Device interface */
2382         DEVMETHOD(device_probe,         rum_match),
2383         DEVMETHOD(device_attach,        rum_attach),
2384         DEVMETHOD(device_detach,        rum_detach),
2385         DEVMETHOD_END
2386 };
2387
2388 static driver_t rum_driver = {
2389         .name = "rum",
2390         .methods = rum_methods,
2391         .size = sizeof(struct rum_softc),
2392 };
2393
2394 static devclass_t rum_devclass;
2395
2396 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0);
2397 MODULE_DEPEND(rum, wlan, 1, 1, 1);
2398 MODULE_DEPEND(rum, usb, 1, 1, 1);
2399 MODULE_VERSION(rum, 1);