sys/dev/usb/wlan/if_rum.c

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr>
   5  * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org>
   6  * Copyright (c) 2007-2008 Hans Petter Selasky <hselasky@FreeBSD.org>
   7  *
   8  * Permission to use, copy, modify, and distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  */
  20
  21 #include <sys/cdefs.h>
  22 __FBSDID("$FreeBSD$");
  23
  24 /*-
  25  * Ralink Technology RT2501USB/RT2601USB chipset driver
  26  * http://www.ralinktech.com.tw/
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/sockio.h>
  31 #include <sys/sysctl.h>
  32 #include <sys/lock.h>
  33 #include <sys/mutex.h>
  34 #include <sys/mbuf.h>
  35 #include <sys/kernel.h>
  36 #include <sys/socket.h>
  37 #include <sys/systm.h>
  38 #include <sys/malloc.h>
  39 #include <sys/module.h>
  40 #include <sys/bus.h>
  41 #include <sys/endian.h>
  42 #include <sys/kdb.h>
  43
  44 #include <machine/bus.h>
  45 #include <machine/resource.h>
  46 #include <sys/rman.h>
  47
  48 #include <net/bpf.h>
  49 #include <net/if.h>
  50 #include <net/if_arp.h>
  51 #include <net/ethernet.h>
  52 #include <net/if_dl.h>
  53 #include <net/if_media.h>
  54 #include <net/if_types.h>
  55
  56 #ifdef INET
  57 #include <netinet/in.h>
  58 #include <netinet/in_systm.h>
  59 #include <netinet/in_var.h>
  60 #include <netinet/if_ether.h>
  61 #include <netinet/ip.h>
  62 #endif
  63
  64 #include <net80211/ieee80211_var.h>
  65 #include <net80211/ieee80211_regdomain.h>
  66 #include <net80211/ieee80211_radiotap.h>
  67 #include <net80211/ieee80211_ratectl.h>
  68
  69 #include <dev/usb/usb.h>
  70 #include <dev/usb/usbdi.h>
  71 #include "usbdevs.h"
  72
  73 #define USB_DEBUG_VAR rum_debug
  74 #include <dev/usb/usb_debug.h>
  75
  76 #include <dev/usb/wlan/if_rumreg.h>
  77 #include <dev/usb/wlan/if_rumvar.h>
  78 #include <dev/usb/wlan/if_rumfw.h>
  79
  80 #ifdef USB_DEBUG
  81 static int rum_debug = 0;
  82
  83 SYSCTL_NODE(_hw_usb, OID_AUTO, rum, CTLFLAG_RW, 0, "USB rum");
  84 SYSCTL_INT(_hw_usb_rum, OID_AUTO, debug, CTLFLAG_RW, &rum_debug, 0,
  85     "Debug level");
  86 #endif
  87
  88 static const struct usb_device_id rum_devs[] = {
  89 #define RUM_DEV(v,p)  { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
  90     RUM_DEV(ABOCOM, HWU54DM),
  91     RUM_DEV(ABOCOM, RT2573_2),
  92     RUM_DEV(ABOCOM, RT2573_3),
  93     RUM_DEV(ABOCOM, RT2573_4),
  94     RUM_DEV(ABOCOM, WUG2700),
  95     RUM_DEV(AMIT, CGWLUSB2GO),
  96     RUM_DEV(ASUS, RT2573_1),
  97     RUM_DEV(ASUS, RT2573_2),
  98     RUM_DEV(BELKIN, F5D7050A),
  99     RUM_DEV(BELKIN, F5D9050V3),
 100     RUM_DEV(CISCOLINKSYS, WUSB54GC),
 101     RUM_DEV(CISCOLINKSYS, WUSB54GR),
 102     RUM_DEV(CONCEPTRONIC2, C54RU2),
 103     RUM_DEV(COREGA, CGWLUSB2GL),
 104     RUM_DEV(COREGA, CGWLUSB2GPX),
 105     RUM_DEV(DICKSMITH, CWD854F),
 106     RUM_DEV(DICKSMITH, RT2573),
 107     RUM_DEV(EDIMAX, EW7318USG),
 108     RUM_DEV(DLINK2, DWLG122C1),
 109     RUM_DEV(DLINK2, WUA1340),
 110     RUM_DEV(DLINK2, DWA111),
 111     RUM_DEV(DLINK2, DWA110),
 112     RUM_DEV(GIGABYTE, GNWB01GS),
 113     RUM_DEV(GIGABYTE, GNWI05GS),
 114     RUM_DEV(GIGASET, RT2573),
 115     RUM_DEV(GOODWAY, RT2573),
 116     RUM_DEV(GUILLEMOT, HWGUSB254LB),
 117     RUM_DEV(GUILLEMOT, HWGUSB254V2AP),
 118     RUM_DEV(HUAWEI3COM, WUB320G),
 119     RUM_DEV(MELCO, G54HP),
 120     RUM_DEV(MELCO, SG54HP),
 121     RUM_DEV(MSI, RT2573_1),
 122     RUM_DEV(MSI, RT2573_2),
 123     RUM_DEV(MSI, RT2573_3),
 124     RUM_DEV(MSI, RT2573_4),
 125     RUM_DEV(NOVATECH, RT2573),
 126     RUM_DEV(PLANEX2, GWUS54HP),
 127     RUM_DEV(PLANEX2, GWUS54MINI2),
 128     RUM_DEV(PLANEX2, GWUSMM),
 129     RUM_DEV(QCOM, RT2573),
 130     RUM_DEV(QCOM, RT2573_2),
 131     RUM_DEV(QCOM, RT2573_3),
 132     RUM_DEV(RALINK, RT2573),
 133     RUM_DEV(RALINK, RT2573_2),
 134     RUM_DEV(RALINK, RT2671),
 135     RUM_DEV(SITECOMEU, WL113R2),
 136     RUM_DEV(SITECOMEU, WL172),
 137     RUM_DEV(SPARKLAN, RT2573),
 138     RUM_DEV(SURECOM, RT2573),
 139 #undef RUM_DEV
 140 };
 141
 142 MODULE_DEPEND(rum, wlan, 1, 1, 1);
 143 MODULE_DEPEND(rum, usb, 1, 1, 1);
 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 name[IFNAMSIZ], int unit, int opmode,
 156                             int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
 157                             const uint8_t mac[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_promisc(struct ifnet *);
 201 static void             rum_setpromisc(struct rum_softc *);
 202 static const char       *rum_get_rf(int);
 203 static void             rum_read_eeprom(struct rum_softc *);
 204 static int              rum_bbp_init(struct rum_softc *);
 205 static void             rum_init_locked(struct rum_softc *);
 206 static void             rum_init(void *);
 207 static void             rum_stop(struct rum_softc *);
 208 static void             rum_load_microcode(struct rum_softc *, const uint8_t *,
 209                             size_t);
 210 static int              rum_prepare_beacon(struct rum_softc *,
 211                             struct ieee80211vap *);
 212 static int              rum_raw_xmit(struct ieee80211_node *, struct mbuf *,
 213                             const struct ieee80211_bpf_params *);
 214 static void             rum_scan_start(struct ieee80211com *);
 215 static void             rum_scan_end(struct ieee80211com *);
 216 static void             rum_set_channel(struct ieee80211com *);
 217 static int              rum_get_rssi(struct rum_softc *, uint8_t);
 218 static void             rum_ratectl_start(struct rum_softc *,
 219                             struct ieee80211_node *);
 220 static void             rum_ratectl_timeout(void *);
 221 static void             rum_ratectl_task(void *, int);
 222 static int              rum_pause(struct rum_softc *, int);
 223
 224 static const struct {
 225         uint32_t        reg;
 226         uint32_t        val;
 227 } rum_def_mac[] = {
 228         { RT2573_TXRX_CSR0,  0x025fb032 },
 229         { RT2573_TXRX_CSR1,  0x9eaa9eaf },
 230         { RT2573_TXRX_CSR2,  0x8a8b8c8d },
 231         { RT2573_TXRX_CSR3,  0x00858687 },
 232         { RT2573_TXRX_CSR7,  0x2e31353b },
 233         { RT2573_TXRX_CSR8,  0x2a2a2a2c },
 234         { RT2573_TXRX_CSR15, 0x0000000f },
 235         { RT2573_MAC_CSR6,   0x00000fff },
 236         { RT2573_MAC_CSR8,   0x016c030a },
 237         { RT2573_MAC_CSR10,  0x00000718 },
 238         { RT2573_MAC_CSR12,  0x00000004 },
 239         { RT2573_MAC_CSR13,  0x00007f00 },
 240         { RT2573_SEC_CSR0,   0x00000000 },
 241         { RT2573_SEC_CSR1,   0x00000000 },
 242         { RT2573_SEC_CSR5,   0x00000000 },
 243         { RT2573_PHY_CSR1,   0x000023b0 },
 244         { RT2573_PHY_CSR5,   0x00040a06 },
 245         { RT2573_PHY_CSR6,   0x00080606 },
 246         { RT2573_PHY_CSR7,   0x00000408 },
 247         { RT2573_AIFSN_CSR,  0x00002273 },
 248         { RT2573_CWMIN_CSR,  0x00002344 },
 249         { RT2573_CWMAX_CSR,  0x000034aa }
 250 };
 251
 252 static const struct {
 253         uint8_t reg;
 254         uint8_t val;
 255 } rum_def_bbp[] = {
 256         {   3, 0x80 },
 257         {  15, 0x30 },
 258         {  17, 0x20 },
 259         {  21, 0xc8 },
 260         {  22, 0x38 },
 261         {  23, 0x06 },
 262         {  24, 0xfe },
 263         {  25, 0x0a },
 264         {  26, 0x0d },
 265         {  32, 0x0b },
 266         {  34, 0x12 },
 267         {  37, 0x07 },
 268         {  39, 0xf8 },
 269         {  41, 0x60 },
 270         {  53, 0x10 },
 271         {  54, 0x18 },
 272         {  60, 0x10 },
 273         {  61, 0x04 },
 274         {  62, 0x04 },
 275         {  75, 0xfe },
 276         {  86, 0xfe },
 277         {  88, 0xfe },
 278         {  90, 0x0f },
 279         {  99, 0x00 },
 280         { 102, 0x16 },
 281         { 107, 0x04 }
 282 };
 283
 284 static const struct rfprog {
 285         uint8_t         chan;
 286         uint32_t        r1, r2, r3, r4;
 287 }  rum_rf5226[] = {
 288         {   1, 0x00b03, 0x001e1, 0x1a014, 0x30282 },
 289         {   2, 0x00b03, 0x001e1, 0x1a014, 0x30287 },
 290         {   3, 0x00b03, 0x001e2, 0x1a014, 0x30282 },
 291         {   4, 0x00b03, 0x001e2, 0x1a014, 0x30287 },
 292         {   5, 0x00b03, 0x001e3, 0x1a014, 0x30282 },
 293         {   6, 0x00b03, 0x001e3, 0x1a014, 0x30287 },
 294         {   7, 0x00b03, 0x001e4, 0x1a014, 0x30282 },
 295         {   8, 0x00b03, 0x001e4, 0x1a014, 0x30287 },
 296         {   9, 0x00b03, 0x001e5, 0x1a014, 0x30282 },
 297         {  10, 0x00b03, 0x001e5, 0x1a014, 0x30287 },
 298         {  11, 0x00b03, 0x001e6, 0x1a014, 0x30282 },
 299         {  12, 0x00b03, 0x001e6, 0x1a014, 0x30287 },
 300         {  13, 0x00b03, 0x001e7, 0x1a014, 0x30282 },
 301         {  14, 0x00b03, 0x001e8, 0x1a014, 0x30284 },
 302
 303         {  34, 0x00b03, 0x20266, 0x36014, 0x30282 },
 304         {  38, 0x00b03, 0x20267, 0x36014, 0x30284 },
 305         {  42, 0x00b03, 0x20268, 0x36014, 0x30286 },
 306         {  46, 0x00b03, 0x20269, 0x36014, 0x30288 },
 307
 308         {  36, 0x00b03, 0x00266, 0x26014, 0x30288 },
 309         {  40, 0x00b03, 0x00268, 0x26014, 0x30280 },
 310         {  44, 0x00b03, 0x00269, 0x26014, 0x30282 },
 311         {  48, 0x00b03, 0x0026a, 0x26014, 0x30284 },
 312         {  52, 0x00b03, 0x0026b, 0x26014, 0x30286 },
 313         {  56, 0x00b03, 0x0026c, 0x26014, 0x30288 },
 314         {  60, 0x00b03, 0x0026e, 0x26014, 0x30280 },
 315         {  64, 0x00b03, 0x0026f, 0x26014, 0x30282 },
 316
 317         { 100, 0x00b03, 0x0028a, 0x2e014, 0x30280 },
 318         { 104, 0x00b03, 0x0028b, 0x2e014, 0x30282 },
 319         { 108, 0x00b03, 0x0028c, 0x2e014, 0x30284 },
 320         { 112, 0x00b03, 0x0028d, 0x2e014, 0x30286 },
 321         { 116, 0x00b03, 0x0028e, 0x2e014, 0x30288 },
 322         { 120, 0x00b03, 0x002a0, 0x2e014, 0x30280 },
 323         { 124, 0x00b03, 0x002a1, 0x2e014, 0x30282 },
 324         { 128, 0x00b03, 0x002a2, 0x2e014, 0x30284 },
 325         { 132, 0x00b03, 0x002a3, 0x2e014, 0x30286 },
 326         { 136, 0x00b03, 0x002a4, 0x2e014, 0x30288 },
 327         { 140, 0x00b03, 0x002a6, 0x2e014, 0x30280 },
 328
 329         { 149, 0x00b03, 0x002a8, 0x2e014, 0x30287 },
 330         { 153, 0x00b03, 0x002a9, 0x2e014, 0x30289 },
 331         { 157, 0x00b03, 0x002ab, 0x2e014, 0x30281 },
 332         { 161, 0x00b03, 0x002ac, 0x2e014, 0x30283 },
 333         { 165, 0x00b03, 0x002ad, 0x2e014, 0x30285 }
 334 }, rum_rf5225[] = {
 335         {   1, 0x00b33, 0x011e1, 0x1a014, 0x30282 },
 336         {   2, 0x00b33, 0x011e1, 0x1a014, 0x30287 },
 337         {   3, 0x00b33, 0x011e2, 0x1a014, 0x30282 },
 338         {   4, 0x00b33, 0x011e2, 0x1a014, 0x30287 },
 339         {   5, 0x00b33, 0x011e3, 0x1a014, 0x30282 },
 340         {   6, 0x00b33, 0x011e3, 0x1a014, 0x30287 },
 341         {   7, 0x00b33, 0x011e4, 0x1a014, 0x30282 },
 342         {   8, 0x00b33, 0x011e4, 0x1a014, 0x30287 },
 343         {   9, 0x00b33, 0x011e5, 0x1a014, 0x30282 },
 344         {  10, 0x00b33, 0x011e5, 0x1a014, 0x30287 },
 345         {  11, 0x00b33, 0x011e6, 0x1a014, 0x30282 },
 346         {  12, 0x00b33, 0x011e6, 0x1a014, 0x30287 },
 347         {  13, 0x00b33, 0x011e7, 0x1a014, 0x30282 },
 348         {  14, 0x00b33, 0x011e8, 0x1a014, 0x30284 },
 349
 350         {  34, 0x00b33, 0x01266, 0x26014, 0x30282 },
 351         {  38, 0x00b33, 0x01267, 0x26014, 0x30284 },
 352         {  42, 0x00b33, 0x01268, 0x26014, 0x30286 },
 353         {  46, 0x00b33, 0x01269, 0x26014, 0x30288 },
 354
 355         {  36, 0x00b33, 0x01266, 0x26014, 0x30288 },
 356         {  40, 0x00b33, 0x01268, 0x26014, 0x30280 },
 357         {  44, 0x00b33, 0x01269, 0x26014, 0x30282 },
 358         {  48, 0x00b33, 0x0126a, 0x26014, 0x30284 },
 359         {  52, 0x00b33, 0x0126b, 0x26014, 0x30286 },
 360         {  56, 0x00b33, 0x0126c, 0x26014, 0x30288 },
 361         {  60, 0x00b33, 0x0126e, 0x26014, 0x30280 },
 362         {  64, 0x00b33, 0x0126f, 0x26014, 0x30282 },
 363
 364         { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 },
 365         { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 },
 366         { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 },
 367         { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 },
 368         { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 },
 369         { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 },
 370         { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 },
 371         { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 },
 372         { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 },
 373         { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 },
 374         { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 },
 375
 376         { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 },
 377         { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 },
 378         { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 },
 379         { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 },
 380         { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 }
 381 };
 382
 383 static const struct usb_config rum_config[RUM_N_TRANSFER] = {
 384         [RUM_BULK_WR] = {
 385                 .type = UE_BULK,
 386                 .endpoint = UE_ADDR_ANY,
 387                 .direction = UE_DIR_OUT,
 388                 .bufsize = (MCLBYTES + RT2573_TX_DESC_SIZE + 8),
 389                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 390                 .callback = rum_bulk_write_callback,
 391                 .timeout = 5000,        /* ms */
 392         },
 393         [RUM_BULK_RD] = {
 394                 .type = UE_BULK,
 395                 .endpoint = UE_ADDR_ANY,
 396                 .direction = UE_DIR_IN,
 397                 .bufsize = (MCLBYTES + RT2573_RX_DESC_SIZE),
 398                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 399                 .callback = rum_bulk_read_callback,
 400         },
 401 };
 402
 403 static int
 404 rum_match(device_t self)
 405 {
 406         struct usb_attach_arg *uaa = device_get_ivars(self);
 407
 408         if (uaa->usb_mode != USB_MODE_HOST)
 409                 return (ENXIO);
 410         if (uaa->info.bConfigIndex != 0)
 411                 return (ENXIO);
 412         if (uaa->info.bIfaceIndex != RT2573_IFACE_INDEX)
 413                 return (ENXIO);
 414
 415         return (usbd_lookup_id_by_uaa(rum_devs, sizeof(rum_devs), uaa));
 416 }
 417
 418 static int
 419 rum_attach(device_t self)
 420 {
 421         struct usb_attach_arg *uaa = device_get_ivars(self);
 422         struct rum_softc *sc = device_get_softc(self);
 423         struct ieee80211com *ic;
 424         struct ifnet *ifp;
 425         uint8_t iface_index, bands;
 426         uint32_t tmp;
 427         int error, ntries;
 428
 429         device_set_usb_desc(self);
 430         sc->sc_udev = uaa->device;
 431         sc->sc_dev = self;
 432
 433         mtx_init(&sc->sc_mtx, device_get_nameunit(self),
 434             MTX_NETWORK_LOCK, MTX_DEF);
 435
 436         iface_index = RT2573_IFACE_INDEX;
 437         error = usbd_transfer_setup(uaa->device, &iface_index,
 438             sc->sc_xfer, rum_config, RUM_N_TRANSFER, sc, &sc->sc_mtx);
 439         if (error) {
 440                 device_printf(self, "could not allocate USB transfers, "
 441                     "err=%s\n", usbd_errstr(error));
 442                 goto detach;
 443         }
 444
 445         RUM_LOCK(sc);
 446         /* retrieve RT2573 rev. no */
 447         for (ntries = 0; ntries < 100; ntries++) {
 448                 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0)
 449                         break;
 450                 if (rum_pause(sc, hz / 100))
 451                         break;
 452         }
 453         if (ntries == 100) {
 454                 device_printf(sc->sc_dev, "timeout waiting for chip to settle\n");
 455                 RUM_UNLOCK(sc);
 456                 goto detach;
 457         }
 458
 459         /* retrieve MAC address and various other things from EEPROM */
 460         rum_read_eeprom(sc);
 461
 462         device_printf(sc->sc_dev, "MAC/BBP RT2573 (rev 0x%05x), RF %s\n",
 463             tmp, rum_get_rf(sc->rf_rev));
 464
 465         rum_load_microcode(sc, rt2573_ucode, sizeof(rt2573_ucode));
 466         RUM_UNLOCK(sc);
 467
 468         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 469         if (ifp == NULL) {
 470                 device_printf(sc->sc_dev, "can not if_alloc()\n");
 471                 goto detach;
 472         }
 473         ic = ifp->if_l2com;
 474
 475         ifp->if_softc = sc;
 476         if_initname(ifp, "rum", device_get_unit(sc->sc_dev));
 477         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 478         ifp->if_init = rum_init;
 479         ifp->if_ioctl = rum_ioctl;
 480         ifp->if_start = rum_start;
 481         IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
 482         ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
 483         IFQ_SET_READY(&ifp->if_snd);
 484
 485         ic->ic_ifp = ifp;
 486         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 487
 488         /* set device capabilities */
 489         ic->ic_caps =
 490               IEEE80211_C_STA           /* station mode supported */
 491             | IEEE80211_C_IBSS          /* IBSS mode supported */
 492             | IEEE80211_C_MONITOR       /* monitor mode supported */
 493             | IEEE80211_C_HOSTAP        /* HostAp mode supported */
 494             | IEEE80211_C_TXPMGT        /* tx power management */
 495             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 496             | IEEE80211_C_SHSLOT        /* short slot time supported */
 497             | IEEE80211_C_BGSCAN        /* bg scanning supported */
 498             | IEEE80211_C_WPA           /* 802.11i */
 499             ;
 500
 501         bands = 0;
 502         setbit(&bands, IEEE80211_MODE_11B);
 503         setbit(&bands, IEEE80211_MODE_11G);
 504         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226)
 505                 setbit(&bands, IEEE80211_MODE_11A);
 506         ieee80211_init_channels(ic, NULL, &bands);
 507
 508         ieee80211_ifattach(ic, sc->sc_bssid);
 509         ic->ic_update_promisc = rum_update_promisc;
 510         ic->ic_raw_xmit = rum_raw_xmit;
 511         ic->ic_scan_start = rum_scan_start;
 512         ic->ic_scan_end = rum_scan_end;
 513         ic->ic_set_channel = rum_set_channel;
 514
 515         ic->ic_vap_create = rum_vap_create;
 516         ic->ic_vap_delete = rum_vap_delete;
 517
 518         ieee80211_radiotap_attach(ic,
 519             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 520                 RT2573_TX_RADIOTAP_PRESENT,
 521             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 522                 RT2573_RX_RADIOTAP_PRESENT);
 523
 524         if (bootverbose)
 525                 ieee80211_announce(ic);
 526
 527         return (0);
 528
 529 detach:
 530         rum_detach(self);
 531         return (ENXIO);                 /* failure */
 532 }
 533
 534 static int
 535 rum_detach(device_t self)
 536 {
 537         struct rum_softc *sc = device_get_softc(self);
 538         struct ifnet *ifp = sc->sc_ifp;
 539         struct ieee80211com *ic;
 540
 541         /* stop all USB transfers */
 542         usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
 543
 544         /* free TX list, if any */
 545         RUM_LOCK(sc);
 546         rum_unsetup_tx_list(sc);
 547         RUM_UNLOCK(sc);
 548
 549         if (ifp) {
 550                 ic = ifp->if_l2com;
 551                 ieee80211_ifdetach(ic);
 552                 if_free(ifp);
 553         }
 554         mtx_destroy(&sc->sc_mtx);
 555
 556         return (0);
 557 }
 558
 559 static usb_error_t
 560 rum_do_request(struct rum_softc *sc,
 561     struct usb_device_request *req, void *data)
 562 {
 563         usb_error_t err;
 564         int ntries = 10;
 565
 566         while (ntries--) {
 567                 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx,
 568                     req, data, 0, NULL, 250 /* ms */);
 569                 if (err == 0)
 570                         break;
 571
 572                 DPRINTFN(1, "Control request failed, %s (retrying)\n",
 573                     usbd_errstr(err));
 574                 if (rum_pause(sc, hz / 100))
 575                         break;
 576         }
 577         return (err);
 578 }
 579
 580 static struct ieee80211vap *
 581 rum_vap_create(struct ieee80211com *ic,
 582         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 583         const uint8_t bssid[IEEE80211_ADDR_LEN],
 584         const uint8_t mac[IEEE80211_ADDR_LEN])
 585 {
 586         struct rum_softc *sc = ic->ic_ifp->if_softc;
 587         struct rum_vap *rvp;
 588         struct ieee80211vap *vap;
 589
 590         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 591                 return NULL;
 592         rvp = (struct rum_vap *) malloc(sizeof(struct rum_vap),
 593             M_80211_VAP, M_NOWAIT | M_ZERO);
 594         if (rvp == NULL)
 595                 return NULL;
 596         vap = &rvp->vap;
 597         /* enable s/w bmiss handling for sta mode */
 598         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 599             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 600
 601         /* override state transition machine */
 602         rvp->newstate = vap->iv_newstate;
 603         vap->iv_newstate = rum_newstate;
 604
 605         usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_mtx, 0);
 606         TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
 607         ieee80211_ratectl_init(vap);
 608         ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
 609         /* complete setup */
 610         ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
 611         ic->ic_opmode = opmode;
 612         return vap;
 613 }
 614
 615 static void
 616 rum_vap_delete(struct ieee80211vap *vap)
 617 {
 618         struct rum_vap *rvp = RUM_VAP(vap);
 619         struct ieee80211com *ic = vap->iv_ic;
 620
 621         usb_callout_drain(&rvp->ratectl_ch);
 622         ieee80211_draintask(ic, &rvp->ratectl_task);
 623         ieee80211_ratectl_deinit(vap);
 624         ieee80211_vap_detach(vap);
 625         free(rvp, M_80211_VAP);
 626 }
 627
 628 static void
 629 rum_tx_free(struct rum_tx_data *data, int txerr)
 630 {
 631         struct rum_softc *sc = data->sc;
 632
 633         if (data->m != NULL) {
 634                 if (data->m->m_flags & M_TXCB)
 635                         ieee80211_process_callback(data->ni, data->m,
 636                             txerr ? ETIMEDOUT : 0);
 637                 m_freem(data->m);
 638                 data->m = NULL;
 639
 640                 ieee80211_free_node(data->ni);
 641                 data->ni = NULL;
 642         }
 643         STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 644         sc->tx_nfree++;
 645 }
 646
 647 static void
 648 rum_setup_tx_list(struct rum_softc *sc)
 649 {
 650         struct rum_tx_data *data;
 651         int i;
 652
 653         sc->tx_nfree = 0;
 654         STAILQ_INIT(&sc->tx_q);
 655         STAILQ_INIT(&sc->tx_free);
 656
 657         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 658                 data = &sc->tx_data[i];
 659
 660                 data->sc = sc;
 661                 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
 662                 sc->tx_nfree++;
 663         }
 664 }
 665
 666 static void
 667 rum_unsetup_tx_list(struct rum_softc *sc)
 668 {
 669         struct rum_tx_data *data;
 670         int i;
 671
 672         /* make sure any subsequent use of the queues will fail */
 673         sc->tx_nfree = 0;
 674         STAILQ_INIT(&sc->tx_q);
 675         STAILQ_INIT(&sc->tx_free);
 676
 677         /* free up all node references and mbufs */
 678         for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
 679                 data = &sc->tx_data[i];
 680
 681                 if (data->m != NULL) {
 682                         m_freem(data->m);
 683                         data->m = NULL;
 684                 }
 685                 if (data->ni != NULL) {
 686                         ieee80211_free_node(data->ni);
 687                         data->ni = NULL;
 688                 }
 689         }
 690 }
 691
 692 static int
 693 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 694 {
 695         struct rum_vap *rvp = RUM_VAP(vap);
 696         struct ieee80211com *ic = vap->iv_ic;
 697         struct rum_softc *sc = ic->ic_ifp->if_softc;
 698         const struct ieee80211_txparam *tp;
 699         enum ieee80211_state ostate;
 700         struct ieee80211_node *ni;
 701         uint32_t tmp;
 702
 703         ostate = vap->iv_state;
 704         DPRINTF("%s -> %s\n",
 705                 ieee80211_state_name[ostate],
 706                 ieee80211_state_name[nstate]);
 707
 708         IEEE80211_UNLOCK(ic);
 709         RUM_LOCK(sc);
 710         usb_callout_stop(&rvp->ratectl_ch);
 711
 712         switch (nstate) {
 713         case IEEE80211_S_INIT:
 714                 if (ostate == IEEE80211_S_RUN) {
 715                         /* abort TSF synchronization */
 716                         tmp = rum_read(sc, RT2573_TXRX_CSR9);
 717                         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
 718                 }
 719                 break;
 720
 721         case IEEE80211_S_RUN:
 722                 ni = vap->iv_bss;
 723
 724                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
 725                         rum_update_slot(ic->ic_ifp);
 726                         rum_enable_mrr(sc);
 727                         rum_set_txpreamble(sc);
 728                         rum_set_basicrates(sc);
 729                         IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
 730                         rum_set_bssid(sc, sc->sc_bssid);
 731                 }
 732
 733                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 734                     vap->iv_opmode == IEEE80211_M_IBSS)
 735                         rum_prepare_beacon(sc, vap);
 736
 737                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
 738                         rum_enable_tsf_sync(sc);
 739                 else
 740                         rum_enable_tsf(sc);
 741
 742                 /* enable automatic rate adaptation */
 743                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 744                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
 745                         rum_ratectl_start(sc, ni);
 746                 break;
 747         default:
 748                 break;
 749         }
 750         RUM_UNLOCK(sc);
 751         IEEE80211_LOCK(ic);
 752         return (rvp->newstate(vap, nstate, arg));
 753 }
 754
 755 static void
 756 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 757 {
 758         struct rum_softc *sc = usbd_xfer_softc(xfer);
 759         struct ifnet *ifp = sc->sc_ifp;
 760         struct ieee80211vap *vap;
 761         struct rum_tx_data *data;
 762         struct mbuf *m;
 763         struct usb_page_cache *pc;
 764         unsigned int len;
 765         int actlen, sumlen;
 766
 767         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 768
 769         switch (USB_GET_STATE(xfer)) {
 770         case USB_ST_TRANSFERRED:
 771                 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
 772
 773                 /* free resources */
 774                 data = usbd_xfer_get_priv(xfer);
 775                 rum_tx_free(data, 0);
 776                 usbd_xfer_set_priv(xfer, NULL);
 777
 778                 ifp->if_opackets++;
 779                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 780
 781                 /* FALLTHROUGH */
 782         case USB_ST_SETUP:
 783 tr_setup:
 784                 data = STAILQ_FIRST(&sc->tx_q);
 785                 if (data) {
 786                         STAILQ_REMOVE_HEAD(&sc->tx_q, next);
 787                         m = data->m;
 788
 789                         if (m->m_pkthdr.len > (MCLBYTES + RT2573_TX_DESC_SIZE)) {
 790                                 DPRINTFN(0, "data overflow, %u bytes\n",
 791                                     m->m_pkthdr.len);
 792                                 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
 793                         }
 794                         pc = usbd_xfer_get_frame(xfer, 0);
 795                         usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
 796                         usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
 797                             m->m_pkthdr.len);
 798
 799                         vap = data->ni->ni_vap;
 800                         if (ieee80211_radiotap_active_vap(vap)) {
 801                                 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
 802
 803                                 tap->wt_flags = 0;
 804                                 tap->wt_rate = data->rate;
 805                                 tap->wt_antenna = sc->tx_ant;
 806
 807                                 ieee80211_radiotap_tx(vap, m);
 808                         }
 809
 810                         /* align end on a 4-bytes boundary */
 811                         len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
 812                         if ((len % 64) == 0)
 813                                 len += 4;
 814
 815                         DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
 816                             m->m_pkthdr.len, len);
 817
 818                         usbd_xfer_set_frame_len(xfer, 0, len);
 819                         usbd_xfer_set_priv(xfer, data);
 820
 821                         usbd_transfer_submit(xfer);
 822                 }
 823                 RUM_UNLOCK(sc);
 824                 rum_start(ifp);
 825                 RUM_LOCK(sc);
 826                 break;
 827
 828         default:                        /* Error */
 829                 DPRINTFN(11, "transfer error, %s\n",
 830                     usbd_errstr(error));
 831
 832                 ifp->if_oerrors++;
 833                 data = usbd_xfer_get_priv(xfer);
 834                 if (data != NULL) {
 835                         rum_tx_free(data, error);
 836                         usbd_xfer_set_priv(xfer, NULL);
 837                 }
 838
 839                 if (error != USB_ERR_CANCELLED) {
 840                         if (error == USB_ERR_TIMEOUT)
 841                                 device_printf(sc->sc_dev, "device timeout\n");
 842
 843                         /*
 844                          * Try to clear stall first, also if other
 845                          * errors occur, hence clearing stall
 846                          * introduces a 50 ms delay:
 847                          */
 848                         usbd_xfer_set_stall(xfer);
 849                         goto tr_setup;
 850                 }
 851                 break;
 852         }
 853 }
 854
 855 static void
 856 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 857 {
 858         struct rum_softc *sc = usbd_xfer_softc(xfer);
 859         struct ifnet *ifp = sc->sc_ifp;
 860         struct ieee80211com *ic = ifp->if_l2com;
 861         struct ieee80211_node *ni;
 862         struct mbuf *m = NULL;
 863         struct usb_page_cache *pc;
 864         uint32_t flags;
 865         uint8_t rssi = 0;
 866         int len;
 867
 868         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 869
 870         switch (USB_GET_STATE(xfer)) {
 871         case USB_ST_TRANSFERRED:
 872
 873                 DPRINTFN(15, "rx done, actlen=%d\n", len);
 874
 875                 if (len < RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN) {
 876                         DPRINTF("%s: xfer too short %d\n",
 877                             device_get_nameunit(sc->sc_dev), len);
 878                         ifp->if_ierrors++;
 879                         goto tr_setup;
 880                 }
 881
 882                 len -= RT2573_RX_DESC_SIZE;
 883                 pc = usbd_xfer_get_frame(xfer, 0);
 884                 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
 885
 886                 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
 887                 flags = le32toh(sc->sc_rx_desc.flags);
 888                 if (flags & RT2573_RX_CRC_ERROR) {
 889                         /*
 890                          * This should not happen since we did not
 891                          * request to receive those frames when we
 892                          * filled RUM_TXRX_CSR2:
 893                          */
 894                         DPRINTFN(5, "PHY or CRC error\n");
 895                         ifp->if_ierrors++;
 896                         goto tr_setup;
 897                 }
 898
 899                 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 900                 if (m == NULL) {
 901                         DPRINTF("could not allocate mbuf\n");
 902                         ifp->if_ierrors++;
 903                         goto tr_setup;
 904                 }
 905                 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
 906                     mtod(m, uint8_t *), len);
 907
 908                 /* finalize mbuf */
 909                 m->m_pkthdr.rcvif = ifp;
 910                 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
 911
 912                 if (ieee80211_radiotap_active(ic)) {
 913                         struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
 914
 915                         /* XXX read tsf */
 916                         tap->wr_flags = 0;
 917                         tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
 918                             (flags & RT2573_RX_OFDM) ?
 919                             IEEE80211_T_OFDM : IEEE80211_T_CCK);
 920                         tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
 921                         tap->wr_antnoise = RT2573_NOISE_FLOOR;
 922                         tap->wr_antenna = sc->rx_ant;
 923                 }
 924                 /* FALLTHROUGH */
 925         case USB_ST_SETUP:
 926 tr_setup:
 927                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 928                 usbd_transfer_submit(xfer);
 929
 930                 /*
 931                  * At the end of a USB callback it is always safe to unlock
 932                  * the private mutex of a device! That is why we do the
 933                  * "ieee80211_input" here, and not some lines up!
 934                  */
 935                 RUM_UNLOCK(sc);
 936                 if (m) {
 937                         ni = ieee80211_find_rxnode(ic,
 938                             mtod(m, struct ieee80211_frame_min *));
 939                         if (ni != NULL) {
 940                                 (void) ieee80211_input(ni, m, rssi,
 941                                     RT2573_NOISE_FLOOR);
 942                                 ieee80211_free_node(ni);
 943                         } else
 944                                 (void) ieee80211_input_all(ic, m, rssi,
 945                                     RT2573_NOISE_FLOOR);
 946                 }
 947                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
 948                     !IFQ_IS_EMPTY(&ifp->if_snd))
 949                         rum_start(ifp);
 950                 RUM_LOCK(sc);
 951                 return;
 952
 953         default:                        /* Error */
 954                 if (error != USB_ERR_CANCELLED) {
 955                         /* try to clear stall first */
 956                         usbd_xfer_set_stall(xfer);
 957                         goto tr_setup;
 958                 }
 959                 return;
 960         }
 961 }
 962
 963 static uint8_t
 964 rum_plcp_signal(int rate)
 965 {
 966         switch (rate) {
 967         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
 968         case 12:        return 0xb;
 969         case 18:        return 0xf;
 970         case 24:        return 0xa;
 971         case 36:        return 0xe;
 972         case 48:        return 0x9;
 973         case 72:        return 0xd;
 974         case 96:        return 0x8;
 975         case 108:       return 0xc;
 976
 977         /* CCK rates (NB: not IEEE std, device-specific) */
 978         case 2:         return 0x0;
 979         case 4:         return 0x1;
 980         case 11:        return 0x2;
 981         case 22:        return 0x3;
 982         }
 983         return 0xff;            /* XXX unsupported/unknown rate */
 984 }
 985
 986 static void
 987 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
 988     uint32_t flags, uint16_t xflags, int len, int rate)
 989 {
 990         struct ifnet *ifp = sc->sc_ifp;
 991         struct ieee80211com *ic = ifp->if_l2com;
 992         uint16_t plcp_length;
 993         int remainder;
 994
 995         desc->flags = htole32(flags);
 996         desc->flags |= htole32(RT2573_TX_VALID);
 997         desc->flags |= htole32(len << 16);
 998
 999         desc->xflags = htole16(xflags);
1000
1001         desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) |
1002             RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10));
1003
1004         /* setup PLCP fields */
1005         desc->plcp_signal  = rum_plcp_signal(rate);
1006         desc->plcp_service = 4;
1007
1008         len += IEEE80211_CRC_LEN;
1009         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1010                 desc->flags |= htole32(RT2573_TX_OFDM);
1011
1012                 plcp_length = len & 0xfff;
1013                 desc->plcp_length_hi = plcp_length >> 6;
1014                 desc->plcp_length_lo = plcp_length & 0x3f;
1015         } else {
1016                 plcp_length = (16 * len + rate - 1) / rate;
1017                 if (rate == 22) {
1018                         remainder = (16 * len) % 22;
1019                         if (remainder != 0 && remainder < 7)
1020                                 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1021                 }
1022                 desc->plcp_length_hi = plcp_length >> 8;
1023                 desc->plcp_length_lo = plcp_length & 0xff;
1024
1025                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1026                         desc->plcp_signal |= 0x08;
1027         }
1028 }
1029
1030 static int
1031 rum_sendprot(struct rum_softc *sc,
1032     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1033 {
1034         struct ieee80211com *ic = ni->ni_ic;
1035         const struct ieee80211_frame *wh;
1036         struct rum_tx_data *data;
1037         struct mbuf *mprot;
1038         int protrate, ackrate, pktlen, flags, isshort;
1039         uint16_t dur;
1040
1041         RUM_LOCK_ASSERT(sc, MA_OWNED);
1042         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1043             ("protection %d", prot));
1044
1045         wh = mtod(m, const struct ieee80211_frame *);
1046         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1047
1048         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1049         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
1050
1051         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1052         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort);
1053             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1054         flags = RT2573_TX_MORE_FRAG;
1055         if (prot == IEEE80211_PROT_RTSCTS) {
1056                 /* NB: CTS is the same size as an ACK */
1057                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1058                 flags |= RT2573_TX_NEED_ACK;
1059                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1060         } else {
1061                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1062         }
1063         if (mprot == NULL) {
1064                 /* XXX stat + msg */
1065                 return (ENOBUFS);
1066         }
1067         data = STAILQ_FIRST(&sc->tx_free);
1068         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1069         sc->tx_nfree--;
1070
1071         data->m = mprot;
1072         data->ni = ieee80211_ref_node(ni);
1073         data->rate = protrate;
1074         rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate);
1075
1076         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1077         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1078
1079         return 0;
1080 }
1081
1082 static int
1083 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1084 {
1085         struct ieee80211vap *vap = ni->ni_vap;
1086         struct ifnet *ifp = sc->sc_ifp;
1087         struct ieee80211com *ic = ifp->if_l2com;
1088         struct rum_tx_data *data;
1089         struct ieee80211_frame *wh;
1090         const struct ieee80211_txparam *tp;
1091         struct ieee80211_key *k;
1092         uint32_t flags = 0;
1093         uint16_t dur;
1094
1095         RUM_LOCK_ASSERT(sc, MA_OWNED);
1096
1097         data = STAILQ_FIRST(&sc->tx_free);
1098         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1099         sc->tx_nfree--;
1100
1101         wh = mtod(m0, struct ieee80211_frame *);
1102         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1103                 k = ieee80211_crypto_encap(ni, m0);
1104                 if (k == NULL) {
1105                         m_freem(m0);
1106                         return ENOBUFS;
1107                 }
1108                 wh = mtod(m0, struct ieee80211_frame *);
1109         }
1110
1111         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1112
1113         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1114                 flags |= RT2573_TX_NEED_ACK;
1115
1116                 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1117                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1118                 *(uint16_t *)wh->i_dur = htole16(dur);
1119
1120                 /* tell hardware to add timestamp for probe responses */
1121                 if ((wh->i_fc[0] &
1122                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
1123                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
1124                         flags |= RT2573_TX_TIMESTAMP;
1125         }
1126
1127         data->m = m0;
1128         data->ni = ni;
1129         data->rate = tp->mgmtrate;
1130
1131         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate);
1132
1133         DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1134             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1135
1136         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1137         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1138
1139         return (0);
1140 }
1141
1142 static int
1143 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1144     const struct ieee80211_bpf_params *params)
1145 {
1146         struct ieee80211com *ic = ni->ni_ic;
1147         struct rum_tx_data *data;
1148         uint32_t flags;
1149         int rate, error;
1150
1151         RUM_LOCK_ASSERT(sc, MA_OWNED);
1152         KASSERT(params != NULL, ("no raw xmit params"));
1153
1154         rate = params->ibp_rate0;
1155         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
1156                 m_freem(m0);
1157                 return EINVAL;
1158         }
1159         flags = 0;
1160         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1161                 flags |= RT2573_TX_NEED_ACK;
1162         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1163                 error = rum_sendprot(sc, m0, ni,
1164                     params->ibp_flags & IEEE80211_BPF_RTS ?
1165                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1166                     rate);
1167                 if (error || sc->tx_nfree == 0) {
1168                         m_freem(m0);
1169                         return ENOBUFS;
1170                 }
1171                 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1172         }
1173
1174         data = STAILQ_FIRST(&sc->tx_free);
1175         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1176         sc->tx_nfree--;
1177
1178         data->m = m0;
1179         data->ni = ni;
1180         data->rate = rate;
1181
1182         /* XXX need to setup descriptor ourself */
1183         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1184
1185         DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1186             m0->m_pkthdr.len, rate);
1187
1188         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1189         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1190
1191         return 0;
1192 }
1193
1194 static int
1195 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1196 {
1197         struct ieee80211vap *vap = ni->ni_vap;
1198         struct ifnet *ifp = sc->sc_ifp;
1199         struct ieee80211com *ic = ifp->if_l2com;
1200         struct rum_tx_data *data;
1201         struct ieee80211_frame *wh;
1202         const struct ieee80211_txparam *tp;
1203         struct ieee80211_key *k;
1204         uint32_t flags = 0;
1205         uint16_t dur;
1206         int error, rate;
1207
1208         RUM_LOCK_ASSERT(sc, MA_OWNED);
1209
1210         wh = mtod(m0, struct ieee80211_frame *);
1211
1212         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1213         if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1214                 rate = tp->mcastrate;
1215         else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1216                 rate = tp->ucastrate;
1217         else
1218                 rate = ni->ni_txrate;
1219
1220         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1221                 k = ieee80211_crypto_encap(ni, m0);
1222                 if (k == NULL) {
1223                         m_freem(m0);
1224                         return ENOBUFS;
1225                 }
1226
1227                 /* packet header may have moved, reset our local pointer */
1228                 wh = mtod(m0, struct ieee80211_frame *);
1229         }
1230
1231         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1232                 int prot = IEEE80211_PROT_NONE;
1233                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1234                         prot = IEEE80211_PROT_RTSCTS;
1235                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1236                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1237                         prot = ic->ic_protmode;
1238                 if (prot != IEEE80211_PROT_NONE) {
1239                         error = rum_sendprot(sc, m0, ni, prot, rate);
1240                         if (error || sc->tx_nfree == 0) {
1241                                 m_freem(m0);
1242                                 return ENOBUFS;
1243                         }
1244                         flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1245                 }
1246         }
1247
1248         data = STAILQ_FIRST(&sc->tx_free);
1249         STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1250         sc->tx_nfree--;
1251
1252         data->m = m0;
1253         data->ni = ni;
1254         data->rate = rate;
1255
1256         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1257                 flags |= RT2573_TX_NEED_ACK;
1258                 flags |= RT2573_TX_MORE_FRAG;
1259
1260                 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1261                     ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1262                 *(uint16_t *)wh->i_dur = htole16(dur);
1263         }
1264
1265         rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate);
1266
1267         DPRINTFN(10, "sending frame len=%d rate=%d\n",
1268             m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1269
1270         STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1271         usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1272
1273         return 0;
1274 }
1275
1276 static void
1277 rum_start(struct ifnet *ifp)
1278 {
1279         struct rum_softc *sc = ifp->if_softc;
1280         struct ieee80211_node *ni;
1281         struct mbuf *m;
1282
1283         RUM_LOCK(sc);
1284         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1285                 RUM_UNLOCK(sc);
1286                 return;
1287         }
1288         for (;;) {
1289                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1290                 if (m == NULL)
1291                         break;
1292                 if (sc->tx_nfree < RUM_TX_MINFREE) {
1293                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1294                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1295                         break;
1296                 }
1297                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1298                 if (rum_tx_data(sc, m, ni) != 0) {
1299                         ieee80211_free_node(ni);
1300                         ifp->if_oerrors++;
1301                         break;
1302                 }
1303         }
1304         RUM_UNLOCK(sc);
1305 }
1306
1307 static int
1308 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1309 {
1310         struct rum_softc *sc = ifp->if_softc;
1311         struct ieee80211com *ic = ifp->if_l2com;
1312         struct ifreq *ifr = (struct ifreq *) data;
1313         int error = 0, startall = 0;
1314
1315         switch (cmd) {
1316         case SIOCSIFFLAGS:
1317                 RUM_LOCK(sc);
1318                 if (ifp->if_flags & IFF_UP) {
1319                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1320                                 rum_init_locked(sc);
1321                                 startall = 1;
1322                         } else
1323                                 rum_setpromisc(sc);
1324                 } else {
1325                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1326                                 rum_stop(sc);
1327                 }
1328                 RUM_UNLOCK(sc);
1329                 if (startall)
1330                         ieee80211_start_all(ic);
1331                 break;
1332         case SIOCGIFMEDIA:
1333                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1334                 break;
1335         case SIOCGIFADDR:
1336                 error = ether_ioctl(ifp, cmd, data);
1337                 break;
1338         default:
1339                 error = EINVAL;
1340                 break;
1341         }
1342         return error;
1343 }
1344
1345 static void
1346 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1347 {
1348         struct usb_device_request req;
1349         usb_error_t error;
1350
1351         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1352         req.bRequest = RT2573_READ_EEPROM;
1353         USETW(req.wValue, 0);
1354         USETW(req.wIndex, addr);
1355         USETW(req.wLength, len);
1356
1357         error = rum_do_request(sc, &req, buf);
1358         if (error != 0) {
1359                 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1360                     usbd_errstr(error));
1361         }
1362 }
1363
1364 static uint32_t
1365 rum_read(struct rum_softc *sc, uint16_t reg)
1366 {
1367         uint32_t val;
1368
1369         rum_read_multi(sc, reg, &val, sizeof val);
1370
1371         return le32toh(val);
1372 }
1373
1374 static void
1375 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1376 {
1377         struct usb_device_request req;
1378         usb_error_t error;
1379
1380         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1381         req.bRequest = RT2573_READ_MULTI_MAC;
1382         USETW(req.wValue, 0);
1383         USETW(req.wIndex, reg);
1384         USETW(req.wLength, len);
1385
1386         error = rum_do_request(sc, &req, buf);
1387         if (error != 0) {
1388                 device_printf(sc->sc_dev,
1389                     "could not multi read MAC register: %s\n",
1390                     usbd_errstr(error));
1391         }
1392 }
1393
1394 static usb_error_t
1395 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1396 {
1397         uint32_t tmp = htole32(val);
1398
1399         return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1400 }
1401
1402 static usb_error_t
1403 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1404 {
1405         struct usb_device_request req;
1406         usb_error_t error;
1407
1408         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1409         req.bRequest = RT2573_WRITE_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 write MAC register: %s\n",
1418                     usbd_errstr(error));
1419         }
1420         return (error);
1421 }
1422
1423 static void
1424 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1425 {
1426         uint32_t tmp;
1427         int ntries;
1428
1429         DPRINTFN(2, "reg=0x%08x\n", reg);
1430
1431         for (ntries = 0; ntries < 100; ntries++) {
1432                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1433                         break;
1434                 if (rum_pause(sc, hz / 100))
1435                         break;
1436         }
1437         if (ntries == 100) {
1438                 device_printf(sc->sc_dev, "could not write to BBP\n");
1439                 return;
1440         }
1441
1442         tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1443         rum_write(sc, RT2573_PHY_CSR3, tmp);
1444 }
1445
1446 static uint8_t
1447 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1448 {
1449         uint32_t val;
1450         int ntries;
1451
1452         DPRINTFN(2, "reg=0x%08x\n", reg);
1453
1454         for (ntries = 0; ntries < 100; ntries++) {
1455                 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1456                         break;
1457                 if (rum_pause(sc, hz / 100))
1458                         break;
1459         }
1460         if (ntries == 100) {
1461                 device_printf(sc->sc_dev, "could not read BBP\n");
1462                 return 0;
1463         }
1464
1465         val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1466         rum_write(sc, RT2573_PHY_CSR3, val);
1467
1468         for (ntries = 0; ntries < 100; ntries++) {
1469                 val = rum_read(sc, RT2573_PHY_CSR3);
1470                 if (!(val & RT2573_BBP_BUSY))
1471                         return val & 0xff;
1472                 if (rum_pause(sc, hz / 100))
1473                         break;
1474         }
1475
1476         device_printf(sc->sc_dev, "could not read BBP\n");
1477         return 0;
1478 }
1479
1480 static void
1481 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1482 {
1483         uint32_t tmp;
1484         int ntries;
1485
1486         for (ntries = 0; ntries < 100; ntries++) {
1487                 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1488                         break;
1489                 if (rum_pause(sc, hz / 100))
1490                         break;
1491         }
1492         if (ntries == 100) {
1493                 device_printf(sc->sc_dev, "could not write to RF\n");
1494                 return;
1495         }
1496
1497         tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1498             (reg & 3);
1499         rum_write(sc, RT2573_PHY_CSR4, tmp);
1500
1501         /* remember last written value in sc */
1502         sc->rf_regs[reg] = val;
1503
1504         DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1505 }
1506
1507 static void
1508 rum_select_antenna(struct rum_softc *sc)
1509 {
1510         uint8_t bbp4, bbp77;
1511         uint32_t tmp;
1512
1513         bbp4  = rum_bbp_read(sc, 4);
1514         bbp77 = rum_bbp_read(sc, 77);
1515
1516         /* TBD */
1517
1518         /* make sure Rx is disabled before switching antenna */
1519         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1520         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1521
1522         rum_bbp_write(sc,  4, bbp4);
1523         rum_bbp_write(sc, 77, bbp77);
1524
1525         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1526 }
1527
1528 /*
1529  * Enable multi-rate retries for frames sent at OFDM rates.
1530  * In 802.11b/g mode, allow fallback to CCK rates.
1531  */
1532 static void
1533 rum_enable_mrr(struct rum_softc *sc)
1534 {
1535         struct ifnet *ifp = sc->sc_ifp;
1536         struct ieee80211com *ic = ifp->if_l2com;
1537         uint32_t tmp;
1538
1539         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1540
1541         tmp &= ~RT2573_MRR_CCK_FALLBACK;
1542         if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan))
1543                 tmp |= RT2573_MRR_CCK_FALLBACK;
1544         tmp |= RT2573_MRR_ENABLED;
1545
1546         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1547 }
1548
1549 static void
1550 rum_set_txpreamble(struct rum_softc *sc)
1551 {
1552         struct ifnet *ifp = sc->sc_ifp;
1553         struct ieee80211com *ic = ifp->if_l2com;
1554         uint32_t tmp;
1555
1556         tmp = rum_read(sc, RT2573_TXRX_CSR4);
1557
1558         tmp &= ~RT2573_SHORT_PREAMBLE;
1559         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1560                 tmp |= RT2573_SHORT_PREAMBLE;
1561
1562         rum_write(sc, RT2573_TXRX_CSR4, tmp);
1563 }
1564
1565 static void
1566 rum_set_basicrates(struct rum_softc *sc)
1567 {
1568         struct ifnet *ifp = sc->sc_ifp;
1569         struct ieee80211com *ic = ifp->if_l2com;
1570
1571         /* update basic rate set */
1572         if (ic->ic_curmode == IEEE80211_MODE_11B) {
1573                 /* 11b basic rates: 1, 2Mbps */
1574                 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
1575         } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1576                 /* 11a basic rates: 6, 12, 24Mbps */
1577                 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
1578         } else {
1579                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
1580                 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
1581         }
1582 }
1583
1584 /*
1585  * Reprogram MAC/BBP to switch to a new band.  Values taken from the reference
1586  * driver.
1587  */
1588 static void
1589 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
1590 {
1591         uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
1592         uint32_t tmp;
1593
1594         /* update all BBP registers that depend on the band */
1595         bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
1596         bbp35 = 0x50; bbp97 = 0x48; bbp98  = 0x48;
1597         if (IEEE80211_IS_CHAN_5GHZ(c)) {
1598                 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
1599                 bbp35 += 0x10; bbp97 += 0x10; bbp98  += 0x10;
1600         }
1601         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1602             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1603                 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
1604         }
1605
1606         sc->bbp17 = bbp17;
1607         rum_bbp_write(sc,  17, bbp17);
1608         rum_bbp_write(sc,  96, bbp96);
1609         rum_bbp_write(sc, 104, bbp104);
1610
1611         if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
1612             (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
1613                 rum_bbp_write(sc, 75, 0x80);
1614                 rum_bbp_write(sc, 86, 0x80);
1615                 rum_bbp_write(sc, 88, 0x80);
1616         }
1617
1618         rum_bbp_write(sc, 35, bbp35);
1619         rum_bbp_write(sc, 97, bbp97);
1620         rum_bbp_write(sc, 98, bbp98);
1621
1622         tmp = rum_read(sc, RT2573_PHY_CSR0);
1623         tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ);
1624         if (IEEE80211_IS_CHAN_2GHZ(c))
1625                 tmp |= RT2573_PA_PE_2GHZ;
1626         else
1627                 tmp |= RT2573_PA_PE_5GHZ;
1628         rum_write(sc, RT2573_PHY_CSR0, tmp);
1629 }
1630
1631 static void
1632 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
1633 {
1634         struct ifnet *ifp = sc->sc_ifp;
1635         struct ieee80211com *ic = ifp->if_l2com;
1636         const struct rfprog *rfprog;
1637         uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
1638         int8_t power;
1639         int i, chan;
1640
1641         chan = ieee80211_chan2ieee(ic, c);
1642         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
1643                 return;
1644
1645         /* select the appropriate RF settings based on what EEPROM says */
1646         rfprog = (sc->rf_rev == RT2573_RF_5225 ||
1647                   sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
1648
1649         /* find the settings for this channel (we know it exists) */
1650         for (i = 0; rfprog[i].chan != chan; i++);
1651
1652         power = sc->txpow[i];
1653         if (power < 0) {
1654                 bbp94 += power;
1655                 power = 0;
1656         } else if (power > 31) {
1657                 bbp94 += power - 31;
1658                 power = 31;
1659         }
1660
1661         /*
1662          * If we are switching from the 2GHz band to the 5GHz band or
1663          * vice-versa, BBP registers need to be reprogrammed.
1664          */
1665         if (c->ic_flags != ic->ic_curchan->ic_flags) {
1666                 rum_select_band(sc, c);
1667                 rum_select_antenna(sc);
1668         }
1669         ic->ic_curchan = c;
1670
1671         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1672         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1673         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
1674         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
1675
1676         rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
1677         rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
1678         rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
1679         rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
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_pause(sc, hz / 100);
1687
1688         /* enable smart mode for MIMO-capable RFs */
1689         bbp3 = rum_bbp_read(sc, 3);
1690
1691         bbp3 &= ~RT2573_SMART_MODE;
1692         if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
1693                 bbp3 |= RT2573_SMART_MODE;
1694
1695         rum_bbp_write(sc, 3, bbp3);
1696
1697         if (bbp94 != RT2573_BBPR94_DEFAULT)
1698                 rum_bbp_write(sc, 94, bbp94);
1699
1700         /* give the chip some extra time to do the switchover */
1701         rum_pause(sc, hz / 100);
1702 }
1703
1704 /*
1705  * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
1706  * and HostAP operating modes.
1707  */
1708 static void
1709 rum_enable_tsf_sync(struct rum_softc *sc)
1710 {
1711         struct ifnet *ifp = sc->sc_ifp;
1712         struct ieee80211com *ic = ifp->if_l2com;
1713         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1714         uint32_t tmp;
1715
1716         if (vap->iv_opmode != IEEE80211_M_STA) {
1717                 /*
1718                  * Change default 16ms TBTT adjustment to 8ms.
1719                  * Must be done before enabling beacon generation.
1720                  */
1721                 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8);
1722         }
1723
1724         tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
1725
1726         /* set beacon interval (in 1/16ms unit) */
1727         tmp |= vap->iv_bss->ni_intval * 16;
1728
1729         tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT;
1730         if (vap->iv_opmode == IEEE80211_M_STA)
1731                 tmp |= RT2573_TSF_MODE(1);
1732         else
1733                 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON;
1734
1735         rum_write(sc, RT2573_TXRX_CSR9, tmp);
1736 }
1737
1738 static void
1739 rum_enable_tsf(struct rum_softc *sc)
1740 {
1741         rum_write(sc, RT2573_TXRX_CSR9,
1742             (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) |
1743             RT2573_TSF_TICKING | RT2573_TSF_MODE(2));
1744 }
1745
1746 static void
1747 rum_update_slot(struct ifnet *ifp)
1748 {
1749         struct rum_softc *sc = ifp->if_softc;
1750         struct ieee80211com *ic = ifp->if_l2com;
1751         uint8_t slottime;
1752         uint32_t tmp;
1753
1754         slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
1755
1756         tmp = rum_read(sc, RT2573_MAC_CSR9);
1757         tmp = (tmp & ~0xff) | slottime;
1758         rum_write(sc, RT2573_MAC_CSR9, tmp);
1759
1760         DPRINTF("setting slot time to %uus\n", slottime);
1761 }
1762
1763 static void
1764 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
1765 {
1766         uint32_t tmp;
1767
1768         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
1769         rum_write(sc, RT2573_MAC_CSR4, tmp);
1770
1771         tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16;
1772         rum_write(sc, RT2573_MAC_CSR5, tmp);
1773 }
1774
1775 static void
1776 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
1777 {
1778         uint32_t tmp;
1779
1780         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
1781         rum_write(sc, RT2573_MAC_CSR2, tmp);
1782
1783         tmp = addr[4] | addr[5] << 8 | 0xff << 16;
1784         rum_write(sc, RT2573_MAC_CSR3, tmp);
1785 }
1786
1787 static void
1788 rum_setpromisc(struct rum_softc *sc)
1789 {
1790         struct ifnet *ifp = sc->sc_ifp;
1791         uint32_t tmp;
1792
1793         tmp = rum_read(sc, RT2573_TXRX_CSR0);
1794
1795         tmp &= ~RT2573_DROP_NOT_TO_ME;
1796         if (!(ifp->if_flags & IFF_PROMISC))
1797                 tmp |= RT2573_DROP_NOT_TO_ME;
1798
1799         rum_write(sc, RT2573_TXRX_CSR0, tmp);
1800
1801         DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
1802             "entering" : "leaving");
1803 }
1804
1805 static void
1806 rum_update_promisc(struct ifnet *ifp)
1807 {
1808         struct rum_softc *sc = ifp->if_softc;
1809
1810         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1811                 return;
1812
1813         RUM_LOCK(sc);
1814         rum_setpromisc(sc);
1815         RUM_UNLOCK(sc);
1816 }
1817
1818 static const char *
1819 rum_get_rf(int rev)
1820 {
1821         switch (rev) {
1822         case RT2573_RF_2527:    return "RT2527 (MIMO XR)";
1823         case RT2573_RF_2528:    return "RT2528";
1824         case RT2573_RF_5225:    return "RT5225 (MIMO XR)";
1825         case RT2573_RF_5226:    return "RT5226";
1826         default:                return "unknown";
1827         }
1828 }
1829
1830 static void
1831 rum_read_eeprom(struct rum_softc *sc)
1832 {
1833         uint16_t val;
1834 #ifdef RUM_DEBUG
1835         int i;
1836 #endif
1837
1838         /* read MAC address */
1839         rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6);
1840
1841         rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
1842         val = le16toh(val);
1843         sc->rf_rev =   (val >> 11) & 0x1f;
1844         sc->hw_radio = (val >> 10) & 0x1;
1845         sc->rx_ant =   (val >> 4)  & 0x3;
1846         sc->tx_ant =   (val >> 2)  & 0x3;
1847         sc->nb_ant =   val & 0x3;
1848
1849         DPRINTF("RF revision=%d\n", sc->rf_rev);
1850
1851         rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
1852         val = le16toh(val);
1853         sc->ext_5ghz_lna = (val >> 6) & 0x1;
1854         sc->ext_2ghz_lna = (val >> 4) & 0x1;
1855
1856         DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
1857             sc->ext_2ghz_lna, sc->ext_5ghz_lna);
1858
1859         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
1860         val = le16toh(val);
1861         if ((val & 0xff) != 0xff)
1862                 sc->rssi_2ghz_corr = (int8_t)(val & 0xff);      /* signed */
1863
1864         /* Only [-10, 10] is valid */
1865         if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
1866                 sc->rssi_2ghz_corr = 0;
1867
1868         rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
1869         val = le16toh(val);
1870         if ((val & 0xff) != 0xff)
1871                 sc->rssi_5ghz_corr = (int8_t)(val & 0xff);      /* signed */
1872
1873         /* Only [-10, 10] is valid */
1874         if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
1875                 sc->rssi_5ghz_corr = 0;
1876
1877         if (sc->ext_2ghz_lna)
1878                 sc->rssi_2ghz_corr -= 14;
1879         if (sc->ext_5ghz_lna)
1880                 sc->rssi_5ghz_corr -= 14;
1881
1882         DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
1883             sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
1884
1885         rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
1886         val = le16toh(val);
1887         if ((val & 0xff) != 0xff)
1888                 sc->rffreq = val & 0xff;
1889
1890         DPRINTF("RF freq=%d\n", sc->rffreq);
1891
1892         /* read Tx power for all a/b/g channels */
1893         rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
1894         /* XXX default Tx power for 802.11a channels */
1895         memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
1896 #ifdef RUM_DEBUG
1897         for (i = 0; i < 14; i++)
1898                 DPRINTF("Channel=%d Tx power=%d\n", i + 1,  sc->txpow[i]);
1899 #endif
1900
1901         /* read default values for BBP registers */
1902         rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
1903 #ifdef RUM_DEBUG
1904         for (i = 0; i < 14; i++) {
1905                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1906                         continue;
1907                 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
1908                     sc->bbp_prom[i].val);
1909         }
1910 #endif
1911 }
1912
1913 static int
1914 rum_bbp_init(struct rum_softc *sc)
1915 {
1916 #define N(a)    (sizeof (a) / sizeof ((a)[0]))
1917         int i, ntries;
1918
1919         /* wait for BBP to be ready */
1920         for (ntries = 0; ntries < 100; ntries++) {
1921                 const uint8_t val = rum_bbp_read(sc, 0);
1922                 if (val != 0 && val != 0xff)
1923                         break;
1924                 if (rum_pause(sc, hz / 100))
1925                         break;
1926         }
1927         if (ntries == 100) {
1928                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
1929                 return EIO;
1930         }
1931
1932         /* initialize BBP registers to default values */
1933         for (i = 0; i < N(rum_def_bbp); i++)
1934                 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
1935
1936         /* write vendor-specific BBP values (from EEPROM) */
1937         for (i = 0; i < 16; i++) {
1938                 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
1939                         continue;
1940                 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
1941         }
1942
1943         return 0;
1944 #undef N
1945 }
1946
1947 static void
1948 rum_init_locked(struct rum_softc *sc)
1949 {
1950 #define N(a)    (sizeof (a) / sizeof ((a)[0]))
1951         struct ifnet *ifp = sc->sc_ifp;
1952         struct ieee80211com *ic = ifp->if_l2com;
1953         uint32_t tmp;
1954         usb_error_t error;
1955         int i, ntries;
1956
1957         RUM_LOCK_ASSERT(sc, MA_OWNED);
1958
1959         rum_stop(sc);
1960
1961         /* initialize MAC registers to default values */
1962         for (i = 0; i < N(rum_def_mac); i++)
1963                 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
1964
1965         /* set host ready */
1966         rum_write(sc, RT2573_MAC_CSR1, 3);
1967         rum_write(sc, RT2573_MAC_CSR1, 0);
1968
1969         /* wait for BBP/RF to wakeup */
1970         for (ntries = 0; ntries < 100; ntries++) {
1971                 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
1972                         break;
1973                 rum_write(sc, RT2573_MAC_CSR12, 4);     /* force wakeup */
1974                 if (rum_pause(sc, hz / 100))
1975                         break;
1976         }
1977         if (ntries == 100) {
1978                 device_printf(sc->sc_dev,
1979                     "timeout waiting for BBP/RF to wakeup\n");
1980                 goto fail;
1981         }
1982
1983         if ((error = rum_bbp_init(sc)) != 0)
1984                 goto fail;
1985
1986         /* select default channel */
1987         rum_select_band(sc, ic->ic_curchan);
1988         rum_select_antenna(sc);
1989         rum_set_chan(sc, ic->ic_curchan);
1990
1991         /* clear STA registers */
1992         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
1993
1994         rum_set_macaddr(sc, IF_LLADDR(ifp));
1995
1996         /* initialize ASIC */
1997         rum_write(sc, RT2573_MAC_CSR1, 4);
1998
1999         /*
2000          * Allocate Tx and Rx xfer queues.
2001          */
2002         rum_setup_tx_list(sc);
2003
2004         /* update Rx filter */
2005         tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2006
2007         tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2008         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2009                 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2010                        RT2573_DROP_ACKCTS;
2011                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2012                         tmp |= RT2573_DROP_TODS;
2013                 if (!(ifp->if_flags & IFF_PROMISC))
2014                         tmp |= RT2573_DROP_NOT_TO_ME;
2015         }
2016         rum_write(sc, RT2573_TXRX_CSR0, tmp);
2017
2018         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2019         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2020         usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2021         usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2022         return;
2023
2024 fail:   rum_stop(sc);
2025 #undef N
2026 }
2027
2028 static void
2029 rum_init(void *priv)
2030 {
2031         struct rum_softc *sc = priv;
2032         struct ifnet *ifp = sc->sc_ifp;
2033         struct ieee80211com *ic = ifp->if_l2com;
2034
2035         RUM_LOCK(sc);
2036         rum_init_locked(sc);
2037         RUM_UNLOCK(sc);
2038
2039         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2040                 ieee80211_start_all(ic);                /* start all vap's */
2041 }
2042
2043 static void
2044 rum_stop(struct rum_softc *sc)
2045 {
2046         struct ifnet *ifp = sc->sc_ifp;
2047         uint32_t tmp;
2048
2049         RUM_LOCK_ASSERT(sc, MA_OWNED);
2050
2051         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2052
2053         RUM_UNLOCK(sc);
2054
2055         /*
2056          * Drain the USB transfers, if not already drained:
2057          */
2058         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2059         usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2060
2061         RUM_LOCK(sc);
2062
2063         rum_unsetup_tx_list(sc);
2064
2065         /* disable Rx */
2066         tmp = rum_read(sc, RT2573_TXRX_CSR0);
2067         rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
2068
2069         /* reset ASIC */
2070         rum_write(sc, RT2573_MAC_CSR1, 3);
2071         rum_write(sc, RT2573_MAC_CSR1, 0);
2072 }
2073
2074 static void
2075 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2076 {
2077         struct usb_device_request req;
2078         uint16_t reg = RT2573_MCU_CODE_BASE;
2079         usb_error_t err;
2080
2081         /* copy firmware image into NIC */
2082         for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2083                 err = rum_write(sc, reg, UGETDW(ucode));
2084                 if (err) {
2085                         /* firmware already loaded ? */
2086                         device_printf(sc->sc_dev, "Firmware load "
2087                             "failure! (ignored)\n");
2088                         break;
2089                 }
2090         }
2091
2092         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
2093         req.bRequest = RT2573_MCU_CNTL;
2094         USETW(req.wValue, RT2573_MCU_RUN);
2095         USETW(req.wIndex, 0);
2096         USETW(req.wLength, 0);
2097
2098         err = rum_do_request(sc, &req, NULL);
2099         if (err != 0) {
2100                 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2101                     usbd_errstr(err));
2102         }
2103
2104         /* give the chip some time to boot */
2105         rum_pause(sc, hz / 8);
2106 }
2107
2108 static int
2109 rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2110 {
2111         struct ieee80211com *ic = vap->iv_ic;
2112         const struct ieee80211_txparam *tp;
2113         struct rum_tx_desc desc;
2114         struct mbuf *m0;
2115
2116         m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo);
2117         if (m0 == NULL) {
2118                 return ENOBUFS;
2119         }
2120
2121         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2122         rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ,
2123             m0->m_pkthdr.len, tp->mgmtrate);
2124
2125         /* copy the first 24 bytes of Tx descriptor into NIC memory */
2126         rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24);
2127
2128         /* copy beacon header and payload into NIC memory */
2129         rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *),
2130             m0->m_pkthdr.len);
2131
2132         m_freem(m0);
2133
2134         return 0;
2135 }
2136
2137 static int
2138 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2139     const struct ieee80211_bpf_params *params)
2140 {
2141         struct ifnet *ifp = ni->ni_ic->ic_ifp;
2142         struct rum_softc *sc = ifp->if_softc;
2143
2144         RUM_LOCK(sc);
2145         /* prevent management frames from being sent if we're not ready */
2146         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2147                 RUM_UNLOCK(sc);
2148                 m_freem(m);
2149                 ieee80211_free_node(ni);
2150                 return ENETDOWN;
2151         }
2152         if (sc->tx_nfree < RUM_TX_MINFREE) {
2153                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2154                 RUM_UNLOCK(sc);
2155                 m_freem(m);
2156                 ieee80211_free_node(ni);
2157                 return EIO;
2158         }
2159
2160         ifp->if_opackets++;
2161
2162         if (params == NULL) {
2163                 /*
2164                  * Legacy path; interpret frame contents to decide
2165                  * precisely how to send the frame.
2166                  */
2167                 if (rum_tx_mgt(sc, m, ni) != 0)
2168                         goto bad;
2169         } else {
2170                 /*
2171                  * Caller supplied explicit parameters to use in
2172                  * sending the frame.
2173                  */
2174                 if (rum_tx_raw(sc, m, ni, params) != 0)
2175                         goto bad;
2176         }
2177         RUM_UNLOCK(sc);
2178
2179         return 0;
2180 bad:
2181         ifp->if_oerrors++;
2182         RUM_UNLOCK(sc);
2183         ieee80211_free_node(ni);
2184         return EIO;
2185 }
2186
2187 static void
2188 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
2189 {
2190         struct ieee80211vap *vap = ni->ni_vap;
2191         struct rum_vap *rvp = RUM_VAP(vap);
2192
2193         /* clear statistic registers (STA_CSR0 to STA_CSR5) */
2194         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2195
2196         ieee80211_ratectl_node_init(ni);
2197
2198         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2199 }
2200
2201 static void
2202 rum_ratectl_timeout(void *arg)
2203 {
2204         struct rum_vap *rvp = arg;
2205         struct ieee80211vap *vap = &rvp->vap;
2206         struct ieee80211com *ic = vap->iv_ic;
2207
2208         ieee80211_runtask(ic, &rvp->ratectl_task);
2209 }
2210
2211 static void
2212 rum_ratectl_task(void *arg, int pending)
2213 {
2214         struct rum_vap *rvp = arg;
2215         struct ieee80211vap *vap = &rvp->vap;
2216         struct ieee80211com *ic = vap->iv_ic;
2217         struct ifnet *ifp = ic->ic_ifp;
2218         struct rum_softc *sc = ifp->if_softc;
2219         struct ieee80211_node *ni = vap->iv_bss;
2220         int ok, fail;
2221         int sum, retrycnt;
2222
2223         RUM_LOCK(sc);
2224         /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */
2225         rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
2226
2227         ok = (le32toh(sc->sta[4]) >> 16) +      /* TX ok w/o retry */
2228             (le32toh(sc->sta[5]) & 0xffff);     /* TX ok w/ retry */
2229         fail = (le32toh(sc->sta[5]) >> 16);     /* TX retry-fail count */
2230         sum = ok+fail;
2231         retrycnt = (le32toh(sc->sta[5]) & 0xffff) + fail;
2232
2233         ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
2234         (void) ieee80211_ratectl_rate(ni, NULL, 0);
2235
2236         ifp->if_oerrors += fail;        /* count TX retry-fail as Tx errors */
2237
2238         usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
2239         RUM_UNLOCK(sc);
2240 }
2241
2242 static void
2243 rum_scan_start(struct ieee80211com *ic)
2244 {
2245         struct ifnet *ifp = ic->ic_ifp;
2246         struct rum_softc *sc = ifp->if_softc;
2247         uint32_t tmp;
2248
2249         RUM_LOCK(sc);
2250         /* abort TSF synchronization */
2251         tmp = rum_read(sc, RT2573_TXRX_CSR9);
2252         rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff);
2253         rum_set_bssid(sc, ifp->if_broadcastaddr);
2254         RUM_UNLOCK(sc);
2255
2256 }
2257
2258 static void
2259 rum_scan_end(struct ieee80211com *ic)
2260 {
2261         struct rum_softc *sc = ic->ic_ifp->if_softc;
2262
2263         RUM_LOCK(sc);
2264         rum_enable_tsf_sync(sc);
2265         rum_set_bssid(sc, sc->sc_bssid);
2266         RUM_UNLOCK(sc);
2267
2268 }
2269
2270 static void
2271 rum_set_channel(struct ieee80211com *ic)
2272 {
2273         struct rum_softc *sc = ic->ic_ifp->if_softc;
2274
2275         RUM_LOCK(sc);
2276         rum_set_chan(sc, ic->ic_curchan);
2277         RUM_UNLOCK(sc);
2278 }
2279
2280 static int
2281 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
2282 {
2283         struct ifnet *ifp = sc->sc_ifp;
2284         struct ieee80211com *ic = ifp->if_l2com;
2285         int lna, agc, rssi;
2286
2287         lna = (raw >> 5) & 0x3;
2288         agc = raw & 0x1f;
2289
2290         if (lna == 0) {
2291                 /*
2292                  * No RSSI mapping
2293                  *
2294                  * NB: Since RSSI is relative to noise floor, -1 is
2295                  *     adequate for caller to know error happened.
2296                  */
2297                 return -1;
2298         }
2299
2300         rssi = (2 * agc) - RT2573_NOISE_FLOOR;
2301
2302         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2303                 rssi += sc->rssi_2ghz_corr;
2304
2305                 if (lna == 1)
2306                         rssi -= 64;
2307                 else if (lna == 2)
2308                         rssi -= 74;
2309                 else if (lna == 3)
2310                         rssi -= 90;
2311         } else {
2312                 rssi += sc->rssi_5ghz_corr;
2313
2314                 if (!sc->ext_5ghz_lna && lna != 1)
2315                         rssi += 4;
2316
2317                 if (lna == 1)
2318                         rssi -= 64;
2319                 else if (lna == 2)
2320                         rssi -= 86;
2321                 else if (lna == 3)
2322                         rssi -= 100;
2323         }
2324         return rssi;
2325 }
2326
2327 static int
2328 rum_pause(struct rum_softc *sc, int timeout)
2329 {
2330
2331         usb_pause_mtx(&sc->sc_mtx, timeout);
2332         return (0);
2333 }
2334
2335 static device_method_t rum_methods[] = {
2336         /* Device interface */
2337         DEVMETHOD(device_probe,         rum_match),
2338         DEVMETHOD(device_attach,        rum_attach),
2339         DEVMETHOD(device_detach,        rum_detach),
2340
2341         { 0, 0 }
2342 };
2343
2344 static driver_t rum_driver = {
2345         .name = "rum",
2346         .methods = rum_methods,
2347         .size = sizeof(struct rum_softc),
2348 };
2349
2350 static devclass_t rum_devclass;
2351
2352 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0);