rt2560.c revision 1.19.4.3
1 /* $NetBSD: rt2560.c,v 1.19.4.3 2010/03/11 15:03:34 yamt Exp $ */ 2 /* $OpenBSD: rt2560.c,v 1.15 2006/04/20 20:31:12 miod Exp $ */ 3 /* $FreeBSD: rt2560.c,v 1.3 2006/03/21 21:15:43 damien Exp $*/ 4 5 /*- 6 * Copyright (c) 2005, 2006 7 * Damien Bergamini <damien.bergamini (at) free.fr> 8 * 9 * Permission to use, copy, modify, and distribute this software for any 10 * purpose with or without fee is hereby granted, provided that the above 11 * copyright notice and this permission notice appear in all copies. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 */ 21 22 /*- 23 * Ralink Technology RT2560 chipset driver 24 * http://www.ralinktech.com/ 25 */ 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: rt2560.c,v 1.19.4.3 2010/03/11 15:03:34 yamt Exp $"); 28 29 30 #include <sys/param.h> 31 #include <sys/sockio.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/callout.h> 38 #include <sys/conf.h> 39 #include <sys/device.h> 40 41 #include <sys/bus.h> 42 #include <machine/endian.h> 43 #include <sys/intr.h> 44 45 #include <net/bpf.h> 46 #include <net/if.h> 47 #include <net/if_arp.h> 48 #include <net/if_dl.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 #include <net/if_ether.h> 52 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/in_var.h> 56 #include <netinet/ip.h> 57 58 #include <net80211/ieee80211_var.h> 59 #include <net80211/ieee80211_rssadapt.h> 60 #include <net80211/ieee80211_radiotap.h> 61 62 #include <dev/ic/rt2560reg.h> 63 #include <dev/ic/rt2560var.h> 64 65 #include <dev/pci/pcireg.h> 66 #include <dev/pci/pcivar.h> 67 #include <dev/pci/pcidevs.h> 68 69 #ifdef RAL_DEBUG 70 #define DPRINTF(x) do { if (rt2560_debug > 0) printf x; } while (0) 71 #define DPRINTFN(n, x) do { if (rt2560_debug >= (n)) printf x; } while (0) 72 int rt2560_debug = 0; 73 #else 74 #define DPRINTF(x) 75 #define DPRINTFN(n, x) 76 #endif 77 78 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 79 struct rt2560_tx_ring *, int); 80 static void rt2560_reset_tx_ring(struct rt2560_softc *, 81 struct rt2560_tx_ring *); 82 static void rt2560_free_tx_ring(struct rt2560_softc *, 83 struct rt2560_tx_ring *); 84 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 85 struct rt2560_rx_ring *, int); 86 static void rt2560_reset_rx_ring(struct rt2560_softc *, 87 struct rt2560_rx_ring *); 88 static void rt2560_free_rx_ring(struct rt2560_softc *, 89 struct rt2560_rx_ring *); 90 static struct ieee80211_node * 91 rt2560_node_alloc(struct ieee80211_node_table *); 92 static int rt2560_media_change(struct ifnet *); 93 static void rt2560_next_scan(void *); 94 static void rt2560_iter_func(void *, struct ieee80211_node *); 95 static void rt2560_update_rssadapt(void *); 96 static int rt2560_newstate(struct ieee80211com *, enum ieee80211_state, 97 int); 98 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 99 static void rt2560_encryption_intr(struct rt2560_softc *); 100 static void rt2560_tx_intr(struct rt2560_softc *); 101 static void rt2560_prio_intr(struct rt2560_softc *); 102 static void rt2560_decryption_intr(struct rt2560_softc *); 103 static void rt2560_rx_intr(struct rt2560_softc *); 104 static void rt2560_beacon_expire(struct rt2560_softc *); 105 static void rt2560_wakeup_expire(struct rt2560_softc *); 106 static uint8_t rt2560_rxrate(struct rt2560_rx_desc *); 107 static int rt2560_ack_rate(struct ieee80211com *, int); 108 static uint16_t rt2560_txtime(int, int, uint32_t); 109 static uint8_t rt2560_plcp_signal(int); 110 static void rt2560_setup_tx_desc(struct rt2560_softc *, 111 struct rt2560_tx_desc *, uint32_t, int, int, int, 112 bus_addr_t); 113 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 114 struct ieee80211_node *); 115 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 116 struct ieee80211_node *); 117 static struct mbuf *rt2560_get_rts(struct rt2560_softc *, 118 struct ieee80211_frame *, uint16_t); 119 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 120 struct ieee80211_node *); 121 static void rt2560_start(struct ifnet *); 122 static void rt2560_watchdog(struct ifnet *); 123 static int rt2560_reset(struct ifnet *); 124 static int rt2560_ioctl(struct ifnet *, u_long, void *); 125 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, uint8_t); 126 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 127 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, uint32_t); 128 static void rt2560_set_chan(struct rt2560_softc *, 129 struct ieee80211_channel *); 130 static void rt2560_disable_rf_tune(struct rt2560_softc *); 131 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 132 static void rt2560_update_plcp(struct rt2560_softc *); 133 static void rt2560_update_slot(struct ifnet *); 134 static void rt2560_set_basicrates(struct rt2560_softc *); 135 static void rt2560_update_led(struct rt2560_softc *, int, int); 136 static void rt2560_set_bssid(struct rt2560_softc *, uint8_t *); 137 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 138 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 139 static void rt2560_update_promisc(struct rt2560_softc *); 140 static void rt2560_set_txantenna(struct rt2560_softc *, int); 141 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 142 static const char *rt2560_get_rf(int); 143 static void rt2560_read_eeprom(struct rt2560_softc *); 144 static int rt2560_bbp_init(struct rt2560_softc *); 145 static int rt2560_init(struct ifnet *); 146 static void rt2560_stop(struct ifnet *, int); 147 148 /* 149 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 150 */ 151 static const struct ieee80211_rateset rt2560_rateset_11a = 152 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 153 154 static const struct ieee80211_rateset rt2560_rateset_11b = 155 { 4, { 2, 4, 11, 22 } }; 156 157 static const struct ieee80211_rateset rt2560_rateset_11g = 158 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 159 160 /* 161 * Default values for MAC registers; values taken from the reference driver. 162 */ 163 static const struct { 164 uint32_t reg; 165 uint32_t val; 166 } rt2560_def_mac[] = { 167 { RT2560_PSCSR0, 0x00020002 }, 168 { RT2560_PSCSR1, 0x00000002 }, 169 { RT2560_PSCSR2, 0x00020002 }, 170 { RT2560_PSCSR3, 0x00000002 }, 171 { RT2560_TIMECSR, 0x00003f21 }, 172 { RT2560_CSR9, 0x00000780 }, 173 { RT2560_CSR11, 0x07041483 }, 174 { RT2560_CNT3, 0x00000000 }, 175 { RT2560_TXCSR1, 0x07614562 }, 176 { RT2560_ARSP_PLCP_0, 0x8c8d8b8a }, 177 { RT2560_ACKPCTCSR, 0x7038140a }, 178 { RT2560_ARTCSR1, 0x1d21252d }, 179 { RT2560_ARTCSR2, 0x1919191d }, 180 { RT2560_RXCSR0, 0xffffffff }, 181 { RT2560_RXCSR3, 0xb3aab3af }, 182 { RT2560_PCICSR, 0x000003b8 }, 183 { RT2560_PWRCSR0, 0x3f3b3100 }, 184 { RT2560_GPIOCSR, 0x0000ff00 }, 185 { RT2560_TESTCSR, 0x000000f0 }, 186 { RT2560_PWRCSR1, 0x000001ff }, 187 { RT2560_MACCSR0, 0x00213223 }, 188 { RT2560_MACCSR1, 0x00235518 }, 189 { RT2560_RLPWCSR, 0x00000040 }, 190 { RT2560_RALINKCSR, 0x9a009a11 }, 191 { RT2560_CSR7, 0xffffffff }, 192 { RT2560_BBPCSR1, 0x82188200 }, 193 { RT2560_TXACKCSR0, 0x00000020 }, 194 { RT2560_SECCSR3, 0x0000e78f } 195 }; 196 197 /* 198 * Default values for BBP registers; values taken from the reference driver. 199 */ 200 static const struct { 201 uint8_t reg; 202 uint8_t val; 203 } rt2560_def_bbp[] = { 204 { 3, 0x02 }, 205 { 4, 0x19 }, 206 { 14, 0x1c }, 207 { 15, 0x30 }, 208 { 16, 0xac }, 209 { 17, 0x48 }, 210 { 18, 0x18 }, 211 { 19, 0xff }, 212 { 20, 0x1e }, 213 { 21, 0x08 }, 214 { 22, 0x08 }, 215 { 23, 0x08 }, 216 { 24, 0x80 }, 217 { 25, 0x50 }, 218 { 26, 0x08 }, 219 { 27, 0x23 }, 220 { 30, 0x10 }, 221 { 31, 0x2b }, 222 { 32, 0xb9 }, 223 { 34, 0x12 }, 224 { 35, 0x50 }, 225 { 39, 0xc4 }, 226 { 40, 0x02 }, 227 { 41, 0x60 }, 228 { 53, 0x10 }, 229 { 54, 0x18 }, 230 { 56, 0x08 }, 231 { 57, 0x10 }, 232 { 58, 0x08 }, 233 { 61, 0x60 }, 234 { 62, 0x10 }, 235 { 75, 0xff } 236 }; 237 238 /* 239 * Default values for RF register R2 indexed by channel numbers; values taken 240 * from the reference driver. 241 */ 242 static const uint32_t rt2560_rf2522_r2[] = { 243 0x307f6, 0x307fb, 0x30800, 0x30805, 0x3080a, 0x3080f, 0x30814, 244 0x30819, 0x3081e, 0x30823, 0x30828, 0x3082d, 0x30832, 0x3083e 245 }; 246 247 static const uint32_t rt2560_rf2523_r2[] = { 248 0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d, 249 0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346 250 }; 251 252 static const uint32_t rt2560_rf2524_r2[] = { 253 0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d, 254 0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346 255 }; 256 257 static const uint32_t rt2560_rf2525_r2[] = { 258 0x20327, 0x20328, 0x20329, 0x2032a, 0x2032b, 0x2032c, 0x2032d, 259 0x2032e, 0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20346 260 }; 261 262 static const uint32_t rt2560_rf2525_hi_r2[] = { 263 0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20344, 0x20345, 264 0x20346, 0x20347, 0x20348, 0x20349, 0x2034a, 0x2034b, 0x2034e 265 }; 266 267 static const uint32_t rt2560_rf2525e_r2[] = { 268 0x2044d, 0x2044e, 0x2044f, 0x20460, 0x20461, 0x20462, 0x20463, 269 0x20464, 0x20465, 0x20466, 0x20467, 0x20468, 0x20469, 0x2046b 270 }; 271 272 static const uint32_t rt2560_rf2526_hi_r2[] = { 273 0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d, 0x0022d, 274 0x0022e, 0x0022e, 0x0022f, 0x0022d, 0x00240, 0x00240, 0x00241 275 }; 276 277 static const uint32_t rt2560_rf2526_r2[] = { 278 0x00226, 0x00227, 0x00227, 0x00228, 0x00228, 0x00229, 0x00229, 279 0x0022a, 0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d 280 }; 281 282 /* 283 * For dual-band RF, RF registers R1 and R4 also depend on channel number; 284 * values taken from the reference driver. 285 */ 286 static const struct { 287 uint8_t chan; 288 uint32_t r1; 289 uint32_t r2; 290 uint32_t r4; 291 } rt2560_rf5222[] = { 292 { 1, 0x08808, 0x0044d, 0x00282 }, 293 { 2, 0x08808, 0x0044e, 0x00282 }, 294 { 3, 0x08808, 0x0044f, 0x00282 }, 295 { 4, 0x08808, 0x00460, 0x00282 }, 296 { 5, 0x08808, 0x00461, 0x00282 }, 297 { 6, 0x08808, 0x00462, 0x00282 }, 298 { 7, 0x08808, 0x00463, 0x00282 }, 299 { 8, 0x08808, 0x00464, 0x00282 }, 300 { 9, 0x08808, 0x00465, 0x00282 }, 301 { 10, 0x08808, 0x00466, 0x00282 }, 302 { 11, 0x08808, 0x00467, 0x00282 }, 303 { 12, 0x08808, 0x00468, 0x00282 }, 304 { 13, 0x08808, 0x00469, 0x00282 }, 305 { 14, 0x08808, 0x0046b, 0x00286 }, 306 307 { 36, 0x08804, 0x06225, 0x00287 }, 308 { 40, 0x08804, 0x06226, 0x00287 }, 309 { 44, 0x08804, 0x06227, 0x00287 }, 310 { 48, 0x08804, 0x06228, 0x00287 }, 311 { 52, 0x08804, 0x06229, 0x00287 }, 312 { 56, 0x08804, 0x0622a, 0x00287 }, 313 { 60, 0x08804, 0x0622b, 0x00287 }, 314 { 64, 0x08804, 0x0622c, 0x00287 }, 315 316 { 100, 0x08804, 0x02200, 0x00283 }, 317 { 104, 0x08804, 0x02201, 0x00283 }, 318 { 108, 0x08804, 0x02202, 0x00283 }, 319 { 112, 0x08804, 0x02203, 0x00283 }, 320 { 116, 0x08804, 0x02204, 0x00283 }, 321 { 120, 0x08804, 0x02205, 0x00283 }, 322 { 124, 0x08804, 0x02206, 0x00283 }, 323 { 128, 0x08804, 0x02207, 0x00283 }, 324 { 132, 0x08804, 0x02208, 0x00283 }, 325 { 136, 0x08804, 0x02209, 0x00283 }, 326 { 140, 0x08804, 0x0220a, 0x00283 }, 327 328 { 149, 0x08808, 0x02429, 0x00281 }, 329 { 153, 0x08808, 0x0242b, 0x00281 }, 330 { 157, 0x08808, 0x0242d, 0x00281 }, 331 { 161, 0x08808, 0x0242f, 0x00281 } 332 }; 333 334 int 335 rt2560_attach(void *xsc, int id) 336 { 337 struct rt2560_softc *sc = xsc; 338 struct ieee80211com *ic = &sc->sc_ic; 339 struct ifnet *ifp = &sc->sc_if; 340 int error, i; 341 342 callout_init(&sc->scan_ch, 0); 343 callout_init(&sc->rssadapt_ch, 0); 344 345 /* retrieve RT2560 rev. no */ 346 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 347 348 /* retrieve MAC address */ 349 rt2560_get_macaddr(sc, ic->ic_myaddr); 350 351 aprint_normal_dev(&sc->sc_dev, "802.11 address %s\n", 352 ether_sprintf(ic->ic_myaddr)); 353 354 /* retrieve RF rev. no and various other things from EEPROM */ 355 rt2560_read_eeprom(sc); 356 357 aprint_normal_dev(&sc->sc_dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 358 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 359 360 /* 361 * Allocate Tx and Rx rings. 362 */ 363 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 364 if (error != 0) { 365 aprint_error_dev(&sc->sc_dev, "could not allocate Tx ring\n)"); 366 goto fail1; 367 } 368 369 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 370 if (error != 0) { 371 aprint_error_dev(&sc->sc_dev, "could not allocate ATIM ring\n"); 372 goto fail2; 373 } 374 375 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 376 if (error != 0) { 377 aprint_error_dev(&sc->sc_dev, "could not allocate Prio ring\n"); 378 goto fail3; 379 } 380 381 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 382 if (error != 0) { 383 aprint_error_dev(&sc->sc_dev, "could not allocate Beacon ring\n"); 384 goto fail4; 385 } 386 387 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 388 if (error != 0) { 389 aprint_error_dev(&sc->sc_dev, "could not allocate Rx ring\n"); 390 goto fail5; 391 } 392 393 ifp->if_softc = sc; 394 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 395 ifp->if_init = rt2560_init; 396 ifp->if_stop = rt2560_stop; 397 ifp->if_ioctl = rt2560_ioctl; 398 ifp->if_start = rt2560_start; 399 ifp->if_watchdog = rt2560_watchdog; 400 IFQ_SET_READY(&ifp->if_snd); 401 memcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 402 403 ic->ic_ifp = ifp; 404 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 405 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 406 ic->ic_state = IEEE80211_S_INIT; 407 408 /* set device capabilities */ 409 ic->ic_caps = 410 IEEE80211_C_IBSS | /* IBSS mode supported */ 411 IEEE80211_C_MONITOR | /* monitor mode supported */ 412 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 413 IEEE80211_C_TXPMGT | /* tx power management */ 414 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 415 IEEE80211_C_SHSLOT | /* short slot time supported */ 416 IEEE80211_C_WPA; /* 802.11i */ 417 418 if (sc->rf_rev == RT2560_RF_5222) { 419 /* set supported .11a rates */ 420 ic->ic_sup_rates[IEEE80211_MODE_11A] = rt2560_rateset_11a; 421 422 /* set supported .11a channels */ 423 for (i = 36; i <= 64; i += 4) { 424 ic->ic_channels[i].ic_freq = 425 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 426 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 427 } 428 for (i = 100; i <= 140; i += 4) { 429 ic->ic_channels[i].ic_freq = 430 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 431 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 432 } 433 for (i = 149; i <= 161; i += 4) { 434 ic->ic_channels[i].ic_freq = 435 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 436 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 437 } 438 } 439 440 /* set supported .11b and .11g rates */ 441 ic->ic_sup_rates[IEEE80211_MODE_11B] = rt2560_rateset_11b; 442 ic->ic_sup_rates[IEEE80211_MODE_11G] = rt2560_rateset_11g; 443 444 /* set supported .11b and .11g channels (1 through 14) */ 445 for (i = 1; i <= 14; i++) { 446 ic->ic_channels[i].ic_freq = 447 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 448 ic->ic_channels[i].ic_flags = 449 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 450 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 451 } 452 453 if_attach(ifp); 454 ieee80211_ifattach(ic); 455 ic->ic_node_alloc = rt2560_node_alloc; 456 ic->ic_updateslot = rt2560_update_slot; 457 ic->ic_reset = rt2560_reset; 458 459 /* override state transition machine */ 460 sc->sc_newstate = ic->ic_newstate; 461 ic->ic_newstate = rt2560_newstate; 462 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status); 463 464 bpf_ops->bpf_attach(ifp, DLT_IEEE802_11_RADIO, 465 sizeof(struct ieee80211_frame) + 64, &sc->sc_drvbpf); 466 467 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 468 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 469 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT); 470 471 sc->sc_txtap_len = sizeof sc->sc_txtapu; 472 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 473 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT); 474 475 476 sc->dwelltime = 200; 477 478 ieee80211_announce(ic); 479 480 if (pmf_device_register(&sc->sc_dev, NULL, NULL)) 481 pmf_class_network_register(&sc->sc_dev, ifp); 482 else 483 aprint_error_dev(&sc->sc_dev, 484 "couldn't establish power handler\n"); 485 486 return 0; 487 488 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 489 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 490 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 491 fail2: rt2560_free_tx_ring(sc, &sc->txq); 492 fail1: 493 return ENXIO; 494 } 495 496 497 int 498 rt2560_detach(void *xsc) 499 { 500 struct rt2560_softc *sc = xsc; 501 struct ifnet *ifp = &sc->sc_if; 502 503 callout_stop(&sc->scan_ch); 504 callout_stop(&sc->rssadapt_ch); 505 506 pmf_device_deregister(&sc->sc_dev); 507 508 rt2560_stop(ifp, 1); 509 510 ieee80211_ifdetach(&sc->sc_ic); /* free all nodes */ 511 if_detach(ifp); 512 513 rt2560_free_tx_ring(sc, &sc->txq); 514 rt2560_free_tx_ring(sc, &sc->atimq); 515 rt2560_free_tx_ring(sc, &sc->prioq); 516 rt2560_free_tx_ring(sc, &sc->bcnq); 517 rt2560_free_rx_ring(sc, &sc->rxq); 518 519 return 0; 520 } 521 522 int 523 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 524 int count) 525 { 526 int i, nsegs, error; 527 528 ring->count = count; 529 ring->queued = 0; 530 ring->cur = ring->next = 0; 531 ring->cur_encrypt = ring->next_encrypt = 0; 532 533 error = bus_dmamap_create(sc->sc_dmat, count * RT2560_TX_DESC_SIZE, 1, 534 count * RT2560_TX_DESC_SIZE, 0, BUS_DMA_NOWAIT, &ring->map); 535 if (error != 0) { 536 aprint_error_dev(&sc->sc_dev, "could not create desc DMA map\n"); 537 goto fail; 538 } 539 540 error = bus_dmamem_alloc(sc->sc_dmat, count * RT2560_TX_DESC_SIZE, 541 PAGE_SIZE, 0, &ring->seg, 1, &nsegs, BUS_DMA_NOWAIT); 542 if (error != 0) { 543 aprint_error_dev(&sc->sc_dev, "could not allocate DMA memory\n"); 544 goto fail; 545 } 546 547 error = bus_dmamem_map(sc->sc_dmat, &ring->seg, nsegs, 548 count * RT2560_TX_DESC_SIZE, (void **)&ring->desc, 549 BUS_DMA_NOWAIT); 550 if (error != 0) { 551 aprint_error_dev(&sc->sc_dev, "could not map desc DMA memory\n"); 552 goto fail; 553 } 554 555 error = bus_dmamap_load(sc->sc_dmat, ring->map, ring->desc, 556 count * RT2560_TX_DESC_SIZE, NULL, BUS_DMA_NOWAIT); 557 if (error != 0) { 558 aprint_error_dev(&sc->sc_dev, "could not load desc DMA map\n"); 559 goto fail; 560 } 561 562 memset(ring->desc, 0, count * RT2560_TX_DESC_SIZE); 563 ring->physaddr = ring->map->dm_segs->ds_addr; 564 565 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 566 M_NOWAIT); 567 if (ring->data == NULL) { 568 aprint_error_dev(&sc->sc_dev, "could not allocate soft data\n"); 569 error = ENOMEM; 570 goto fail; 571 } 572 573 memset(ring->data, 0, count * sizeof (struct rt2560_tx_data)); 574 for (i = 0; i < count; i++) { 575 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 576 RT2560_MAX_SCATTER, MCLBYTES, 0, BUS_DMA_NOWAIT, 577 &ring->data[i].map); 578 if (error != 0) { 579 aprint_error_dev(&sc->sc_dev, "could not create DMA map\n"); 580 goto fail; 581 } 582 } 583 584 return 0; 585 586 fail: rt2560_free_tx_ring(sc, ring); 587 return error; 588 } 589 590 void 591 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 592 { 593 struct rt2560_tx_desc *desc; 594 struct rt2560_tx_data *data; 595 int i; 596 597 for (i = 0; i < ring->count; i++) { 598 desc = &ring->desc[i]; 599 data = &ring->data[i]; 600 601 if (data->m != NULL) { 602 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 603 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 604 bus_dmamap_unload(sc->sc_dmat, data->map); 605 m_freem(data->m); 606 data->m = NULL; 607 } 608 609 if (data->ni != NULL) { 610 ieee80211_free_node(data->ni); 611 data->ni = NULL; 612 } 613 614 desc->flags = 0; 615 } 616 617 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, ring->map->dm_mapsize, 618 BUS_DMASYNC_PREWRITE); 619 620 ring->queued = 0; 621 ring->cur = ring->next = 0; 622 ring->cur_encrypt = ring->next_encrypt = 0; 623 } 624 625 void 626 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 627 { 628 struct rt2560_tx_data *data; 629 int i; 630 631 if (ring->desc != NULL) { 632 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, 633 ring->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 634 bus_dmamap_unload(sc->sc_dmat, ring->map); 635 bus_dmamem_unmap(sc->sc_dmat, (void *)ring->desc, 636 ring->count * RT2560_TX_DESC_SIZE); 637 bus_dmamem_free(sc->sc_dmat, &ring->seg, 1); 638 } 639 640 if (ring->data != NULL) { 641 for (i = 0; i < ring->count; i++) { 642 data = &ring->data[i]; 643 644 if (data->m != NULL) { 645 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 646 data->map->dm_mapsize, 647 BUS_DMASYNC_POSTWRITE); 648 bus_dmamap_unload(sc->sc_dmat, data->map); 649 m_freem(data->m); 650 } 651 652 if (data->ni != NULL) 653 ieee80211_free_node(data->ni); 654 655 656 if (data->map != NULL) 657 bus_dmamap_destroy(sc->sc_dmat, data->map); 658 } 659 free(ring->data, M_DEVBUF); 660 } 661 } 662 663 int 664 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 665 int count) 666 { 667 struct rt2560_rx_desc *desc; 668 struct rt2560_rx_data *data; 669 int i, nsegs, error; 670 671 ring->count = count; 672 ring->cur = ring->next = 0; 673 ring->cur_decrypt = 0; 674 675 error = bus_dmamap_create(sc->sc_dmat, count * RT2560_RX_DESC_SIZE, 1, 676 count * RT2560_RX_DESC_SIZE, 0, BUS_DMA_NOWAIT, &ring->map); 677 if (error != 0) { 678 aprint_error_dev(&sc->sc_dev, "could not create desc DMA map\n"); 679 goto fail; 680 } 681 682 error = bus_dmamem_alloc(sc->sc_dmat, count * RT2560_RX_DESC_SIZE, 683 PAGE_SIZE, 0, &ring->seg, 1, &nsegs, BUS_DMA_NOWAIT); 684 if (error != 0) { 685 aprint_error_dev(&sc->sc_dev, "could not allocate DMA memory\n"); 686 goto fail; 687 } 688 689 error = bus_dmamem_map(sc->sc_dmat, &ring->seg, nsegs, 690 count * RT2560_RX_DESC_SIZE, (void **)&ring->desc, 691 BUS_DMA_NOWAIT); 692 if (error != 0) { 693 aprint_error_dev(&sc->sc_dev, "could not map desc DMA memory\n"); 694 goto fail; 695 } 696 697 error = bus_dmamap_load(sc->sc_dmat, ring->map, ring->desc, 698 count * RT2560_RX_DESC_SIZE, NULL, BUS_DMA_NOWAIT); 699 if (error != 0) { 700 aprint_error_dev(&sc->sc_dev, "could not load desc DMA map\n"); 701 goto fail; 702 } 703 704 memset(ring->desc, 0, count * RT2560_RX_DESC_SIZE); 705 ring->physaddr = ring->map->dm_segs->ds_addr; 706 707 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 708 M_NOWAIT); 709 if (ring->data == NULL) { 710 aprint_error_dev(&sc->sc_dev, "could not allocate soft data\n"); 711 error = ENOMEM; 712 goto fail; 713 } 714 715 /* 716 * Pre-allocate Rx buffers and populate Rx ring. 717 */ 718 memset(ring->data, 0, count * sizeof (struct rt2560_rx_data)); 719 for (i = 0; i < count; i++) { 720 desc = &sc->rxq.desc[i]; 721 data = &sc->rxq.data[i]; 722 723 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 724 0, BUS_DMA_NOWAIT, &data->map); 725 if (error != 0) { 726 aprint_error_dev(&sc->sc_dev, "could not create DMA map\n"); 727 goto fail; 728 } 729 730 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 731 if (data->m == NULL) { 732 aprint_error_dev(&sc->sc_dev, "could not allocate rx mbuf\n"); 733 error = ENOMEM; 734 goto fail; 735 } 736 737 MCLGET(data->m, M_DONTWAIT); 738 if (!(data->m->m_flags & M_EXT)) { 739 aprint_error_dev(&sc->sc_dev, "could not allocate rx mbuf cluster\n"); 740 error = ENOMEM; 741 goto fail; 742 } 743 744 error = bus_dmamap_load(sc->sc_dmat, data->map, 745 mtod(data->m, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT); 746 if (error != 0) { 747 aprint_error_dev(&sc->sc_dev, "could not load rx buf DMA map"); 748 goto fail; 749 } 750 751 desc->flags = htole32(RT2560_RX_BUSY); 752 desc->physaddr = htole32(data->map->dm_segs->ds_addr); 753 } 754 755 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, ring->map->dm_mapsize, 756 BUS_DMASYNC_PREWRITE); 757 758 return 0; 759 760 fail: rt2560_free_rx_ring(sc, ring); 761 return error; 762 } 763 764 void 765 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 766 { 767 int i; 768 769 for (i = 0; i < ring->count; i++) { 770 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 771 ring->data[i].drop = 0; 772 } 773 774 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, ring->map->dm_mapsize, 775 BUS_DMASYNC_PREWRITE); 776 777 ring->cur = ring->next = 0; 778 ring->cur_decrypt = 0; 779 } 780 781 void 782 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 783 { 784 struct rt2560_rx_data *data; 785 int i; 786 787 if (ring->desc != NULL) { 788 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, 789 ring->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 790 bus_dmamap_unload(sc->sc_dmat, ring->map); 791 bus_dmamem_unmap(sc->sc_dmat, (void *)ring->desc, 792 ring->count * RT2560_RX_DESC_SIZE); 793 bus_dmamem_free(sc->sc_dmat, &ring->seg, 1); 794 } 795 796 if (ring->data != NULL) { 797 for (i = 0; i < ring->count; i++) { 798 data = &ring->data[i]; 799 800 if (data->m != NULL) { 801 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 802 data->map->dm_mapsize, 803 BUS_DMASYNC_POSTREAD); 804 bus_dmamap_unload(sc->sc_dmat, data->map); 805 m_freem(data->m); 806 } 807 808 if (data->map != NULL) 809 bus_dmamap_destroy(sc->sc_dmat, data->map); 810 } 811 free(ring->data, M_DEVBUF); 812 } 813 } 814 815 struct ieee80211_node * 816 rt2560_node_alloc(struct ieee80211_node_table *nt) 817 { 818 struct rt2560_node *rn; 819 820 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE, 821 M_NOWAIT | M_ZERO); 822 823 return (rn != NULL) ? &rn->ni : NULL; 824 } 825 826 int 827 rt2560_media_change(struct ifnet *ifp) 828 { 829 int error; 830 831 error = ieee80211_media_change(ifp); 832 if (error != ENETRESET) 833 return error; 834 835 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 836 rt2560_init(ifp); 837 838 return 0; 839 } 840 841 /* 842 * This function is called periodically (every 200ms) during scanning to 843 * switch from one channel to another. 844 */ 845 void 846 rt2560_next_scan(void *arg) 847 { 848 struct rt2560_softc *sc = arg; 849 struct ieee80211com *ic = &sc->sc_ic; 850 851 if (ic->ic_state == IEEE80211_S_SCAN) 852 ieee80211_next_scan(ic); 853 } 854 855 /* 856 * This function is called for each neighbor node. 857 */ 858 void 859 rt2560_iter_func(void *arg, struct ieee80211_node *ni) 860 { 861 struct rt2560_node *rn = (struct rt2560_node *)ni; 862 863 ieee80211_rssadapt_updatestats(&rn->rssadapt); 864 } 865 866 /* 867 * This function is called periodically (every 100ms) in RUN state to update 868 * the rate adaptation statistics. 869 */ 870 void 871 rt2560_update_rssadapt(void *arg) 872 { 873 struct rt2560_softc *sc = arg; 874 struct ieee80211com *ic = &sc->sc_ic; 875 876 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg); 877 878 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc); 879 } 880 881 int 882 rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 883 { 884 struct rt2560_softc *sc = ic->ic_ifp->if_softc; 885 enum ieee80211_state ostate; 886 struct ieee80211_node *ni; 887 struct mbuf *m; 888 int error = 0; 889 890 ostate = ic->ic_state; 891 callout_stop(&sc->scan_ch); 892 893 switch (nstate) { 894 case IEEE80211_S_INIT: 895 callout_stop(&sc->rssadapt_ch); 896 897 if (ostate == IEEE80211_S_RUN) { 898 /* abort TSF synchronization */ 899 RAL_WRITE(sc, RT2560_CSR14, 0); 900 901 /* turn association led off */ 902 rt2560_update_led(sc, 0, 0); 903 } 904 break; 905 906 case IEEE80211_S_SCAN: 907 rt2560_set_chan(sc, ic->ic_curchan); 908 callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000, 909 rt2560_next_scan, sc); 910 break; 911 912 case IEEE80211_S_AUTH: 913 rt2560_set_chan(sc, ic->ic_curchan); 914 break; 915 916 case IEEE80211_S_ASSOC: 917 rt2560_set_chan(sc, ic->ic_curchan); 918 break; 919 920 case IEEE80211_S_RUN: 921 rt2560_set_chan(sc, ic->ic_curchan); 922 923 ni = ic->ic_bss; 924 925 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 926 rt2560_update_plcp(sc); 927 rt2560_set_basicrates(sc); 928 rt2560_set_bssid(sc, ni->ni_bssid); 929 } 930 931 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 932 ic->ic_opmode == IEEE80211_M_IBSS) { 933 m = ieee80211_beacon_alloc(ic, ni, &sc->sc_bo); 934 if (m == NULL) { 935 aprint_error_dev(&sc->sc_dev, "could not allocate beacon\n"); 936 error = ENOBUFS; 937 break; 938 } 939 940 ieee80211_ref_node(ni); 941 error = rt2560_tx_bcn(sc, m, ni); 942 if (error != 0) 943 break; 944 } 945 946 /* turn assocation led on */ 947 rt2560_update_led(sc, 1, 0); 948 949 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 950 callout_reset(&sc->rssadapt_ch, hz / 10, 951 rt2560_update_rssadapt, sc); 952 rt2560_enable_tsf_sync(sc); 953 } 954 break; 955 } 956 957 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg); 958 } 959 960 /* 961 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 962 * 93C66). 963 */ 964 uint16_t 965 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 966 { 967 uint32_t tmp; 968 uint16_t val; 969 int n; 970 971 /* clock C once before the first command */ 972 RT2560_EEPROM_CTL(sc, 0); 973 974 RT2560_EEPROM_CTL(sc, RT2560_S); 975 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 976 RT2560_EEPROM_CTL(sc, RT2560_S); 977 978 /* write start bit (1) */ 979 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 980 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 981 982 /* write READ opcode (10) */ 983 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 984 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 985 RT2560_EEPROM_CTL(sc, RT2560_S); 986 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 987 988 /* write address (A5-A0 or A7-A0) */ 989 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 990 for (; n >= 0; n--) { 991 RT2560_EEPROM_CTL(sc, RT2560_S | 992 (((addr >> n) & 1) << RT2560_SHIFT_D)); 993 RT2560_EEPROM_CTL(sc, RT2560_S | 994 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 995 } 996 997 RT2560_EEPROM_CTL(sc, RT2560_S); 998 999 /* read data Q15-Q0 */ 1000 val = 0; 1001 for (n = 15; n >= 0; n--) { 1002 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 1003 tmp = RAL_READ(sc, RT2560_CSR21); 1004 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 1005 RT2560_EEPROM_CTL(sc, RT2560_S); 1006 } 1007 1008 RT2560_EEPROM_CTL(sc, 0); 1009 1010 /* clear Chip Select and clock C */ 1011 RT2560_EEPROM_CTL(sc, RT2560_S); 1012 RT2560_EEPROM_CTL(sc, 0); 1013 RT2560_EEPROM_CTL(sc, RT2560_C); 1014 1015 return val; 1016 } 1017 1018 /* 1019 * Some frames were processed by the hardware cipher engine and are ready for 1020 * transmission. 1021 */ 1022 void 1023 rt2560_encryption_intr(struct rt2560_softc *sc) 1024 { 1025 struct rt2560_tx_desc *desc; 1026 int hw; 1027 1028 /* retrieve last descriptor index processed by cipher engine */ 1029 hw = (RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr) / 1030 RT2560_TX_DESC_SIZE; 1031 1032 for (; sc->txq.next_encrypt != hw;) { 1033 desc = &sc->txq.desc[sc->txq.next_encrypt]; 1034 1035 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1036 sc->txq.next_encrypt * RT2560_TX_DESC_SIZE, 1037 RT2560_TX_DESC_SIZE, BUS_DMASYNC_POSTREAD); 1038 1039 if (le32toh(desc->flags) & 1040 (RT2560_TX_BUSY | RT2560_TX_CIPHER_BUSY)) 1041 break; 1042 1043 /* for TKIP, swap eiv field to fix a bug in ASIC */ 1044 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 1045 RT2560_TX_CIPHER_TKIP) 1046 desc->eiv = bswap32(desc->eiv); 1047 1048 /* mark the frame ready for transmission */ 1049 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID); 1050 1051 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1052 sc->txq.next_encrypt * RT2560_TX_DESC_SIZE, 1053 RT2560_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1054 1055 DPRINTFN(15, ("encryption done idx=%u\n", 1056 sc->txq.next_encrypt)); 1057 1058 sc->txq.next_encrypt = 1059 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 1060 } 1061 1062 /* kick Tx */ 1063 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 1064 } 1065 1066 void 1067 rt2560_tx_intr(struct rt2560_softc *sc) 1068 { 1069 struct ieee80211com *ic = &sc->sc_ic; 1070 struct ifnet *ifp = ic->ic_ifp; 1071 struct rt2560_tx_desc *desc; 1072 struct rt2560_tx_data *data; 1073 struct rt2560_node *rn; 1074 1075 for (;;) { 1076 desc = &sc->txq.desc[sc->txq.next]; 1077 data = &sc->txq.data[sc->txq.next]; 1078 1079 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1080 sc->txq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1081 BUS_DMASYNC_POSTREAD); 1082 1083 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 1084 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) || 1085 !(le32toh(desc->flags) & RT2560_TX_VALID)) 1086 break; 1087 1088 rn = (struct rt2560_node *)data->ni; 1089 1090 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) { 1091 case RT2560_TX_SUCCESS: 1092 DPRINTFN(10, ("data frame sent successfully\n")); 1093 if (data->id.id_node != NULL) { 1094 ieee80211_rssadapt_raise_rate(ic, 1095 &rn->rssadapt, &data->id); 1096 } 1097 ifp->if_opackets++; 1098 break; 1099 1100 case RT2560_TX_SUCCESS_RETRY: 1101 DPRINTFN(9, ("data frame sent after %u retries\n", 1102 (le32toh(desc->flags) >> 5) & 0x7)); 1103 ifp->if_opackets++; 1104 break; 1105 1106 case RT2560_TX_FAIL_RETRY: 1107 DPRINTFN(9, ("sending data frame failed (too much " 1108 "retries)\n")); 1109 if (data->id.id_node != NULL) { 1110 ieee80211_rssadapt_lower_rate(ic, data->ni, 1111 &rn->rssadapt, &data->id); 1112 } 1113 ifp->if_oerrors++; 1114 break; 1115 1116 case RT2560_TX_FAIL_INVALID: 1117 case RT2560_TX_FAIL_OTHER: 1118 default: 1119 aprint_error_dev(&sc->sc_dev, "sending data frame failed 0x%08x\n", 1120 le32toh(desc->flags)); 1121 ifp->if_oerrors++; 1122 } 1123 1124 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1125 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1126 bus_dmamap_unload(sc->sc_dmat, data->map); 1127 m_freem(data->m); 1128 data->m = NULL; 1129 ieee80211_free_node(data->ni); 1130 data->ni = NULL; 1131 1132 /* descriptor is no longer valid */ 1133 desc->flags &= ~htole32(RT2560_TX_VALID); 1134 1135 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1136 sc->txq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1137 BUS_DMASYNC_PREWRITE); 1138 1139 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next)); 1140 1141 sc->txq.queued--; 1142 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1143 } 1144 1145 sc->sc_tx_timer = 0; 1146 ifp->if_flags &= ~IFF_OACTIVE; 1147 rt2560_start(ifp); 1148 } 1149 1150 void 1151 rt2560_prio_intr(struct rt2560_softc *sc) 1152 { 1153 struct ieee80211com *ic = &sc->sc_ic; 1154 struct ifnet *ifp = ic->ic_ifp; 1155 struct rt2560_tx_desc *desc; 1156 struct rt2560_tx_data *data; 1157 1158 for (;;) { 1159 desc = &sc->prioq.desc[sc->prioq.next]; 1160 data = &sc->prioq.data[sc->prioq.next]; 1161 1162 bus_dmamap_sync(sc->sc_dmat, sc->prioq.map, 1163 sc->prioq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1164 BUS_DMASYNC_POSTREAD); 1165 1166 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 1167 !(le32toh(desc->flags) & RT2560_TX_VALID)) 1168 break; 1169 1170 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) { 1171 case RT2560_TX_SUCCESS: 1172 DPRINTFN(10, ("mgt frame sent successfully\n")); 1173 break; 1174 1175 case RT2560_TX_SUCCESS_RETRY: 1176 DPRINTFN(9, ("mgt frame sent after %u retries\n", 1177 (le32toh(desc->flags) >> 5) & 0x7)); 1178 break; 1179 1180 case RT2560_TX_FAIL_RETRY: 1181 DPRINTFN(9, ("sending mgt frame failed (too much " 1182 "retries)\n")); 1183 break; 1184 1185 case RT2560_TX_FAIL_INVALID: 1186 case RT2560_TX_FAIL_OTHER: 1187 default: 1188 aprint_error_dev(&sc->sc_dev, "sending mgt frame failed 0x%08x\n", 1189 le32toh(desc->flags)); 1190 } 1191 1192 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1193 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1194 bus_dmamap_unload(sc->sc_dmat, data->map); 1195 m_freem(data->m); 1196 data->m = NULL; 1197 ieee80211_free_node(data->ni); 1198 data->ni = NULL; 1199 1200 /* descriptor is no longer valid */ 1201 desc->flags &= ~htole32(RT2560_TX_VALID); 1202 1203 bus_dmamap_sync(sc->sc_dmat, sc->prioq.map, 1204 sc->prioq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1205 BUS_DMASYNC_PREWRITE); 1206 1207 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next)); 1208 1209 sc->prioq.queued--; 1210 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1211 } 1212 1213 sc->sc_tx_timer = 0; 1214 ifp->if_flags &= ~IFF_OACTIVE; 1215 rt2560_start(ifp); 1216 } 1217 1218 /* 1219 * Some frames were processed by the hardware cipher engine and are ready for 1220 * transmission to the IEEE802.11 layer. 1221 */ 1222 void 1223 rt2560_decryption_intr(struct rt2560_softc *sc) 1224 { 1225 struct ieee80211com *ic = &sc->sc_ic; 1226 struct ifnet *ifp = ic->ic_ifp; 1227 struct rt2560_rx_desc *desc; 1228 struct rt2560_rx_data *data; 1229 struct rt2560_node *rn; 1230 struct ieee80211_frame *wh; 1231 struct ieee80211_node *ni; 1232 struct mbuf *mnew, *m; 1233 int hw, error; 1234 1235 /* retrieve last decriptor index processed by cipher engine */ 1236 hw = (RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr) / 1237 RT2560_RX_DESC_SIZE; 1238 1239 for (; sc->rxq.cur_decrypt != hw;) { 1240 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1241 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1242 1243 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1244 sc->rxq.cur_decrypt * RT2560_TX_DESC_SIZE, 1245 RT2560_TX_DESC_SIZE, BUS_DMASYNC_POSTREAD); 1246 1247 if (le32toh(desc->flags) & 1248 (RT2560_RX_BUSY | RT2560_RX_CIPHER_BUSY)) 1249 break; 1250 1251 if (data->drop) { 1252 ifp->if_ierrors++; 1253 goto skip; 1254 } 1255 1256 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1257 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1258 ifp->if_ierrors++; 1259 goto skip; 1260 } 1261 1262 /* 1263 * Try to allocate a new mbuf for this ring element and load it 1264 * before processing the current mbuf. If the ring element 1265 * cannot be loaded, drop the received packet and reuse the old 1266 * mbuf. In the unlikely case that the old mbuf can't be 1267 * reloaded either, explicitly panic. 1268 */ 1269 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1270 if (mnew == NULL) { 1271 ifp->if_ierrors++; 1272 goto skip; 1273 } 1274 1275 MCLGET(mnew, M_DONTWAIT); 1276 if (!(mnew->m_flags & M_EXT)) { 1277 m_freem(mnew); 1278 ifp->if_ierrors++; 1279 goto skip; 1280 } 1281 1282 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1283 data->map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1284 bus_dmamap_unload(sc->sc_dmat, data->map); 1285 1286 error = bus_dmamap_load(sc->sc_dmat, data->map, 1287 mtod(mnew, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT); 1288 if (error != 0) { 1289 m_freem(mnew); 1290 1291 /* try to reload the old mbuf */ 1292 error = bus_dmamap_load(sc->sc_dmat, data->map, 1293 mtod(data->m, void *), MCLBYTES, NULL, 1294 BUS_DMA_NOWAIT); 1295 if (error != 0) { 1296 /* very unlikely that it will fail... */ 1297 panic("%s: could not load old rx mbuf", 1298 device_xname(&sc->sc_dev)); 1299 } 1300 /* physical address may have changed */ 1301 desc->physaddr = htole32(data->map->dm_segs->ds_addr); 1302 ifp->if_ierrors++; 1303 goto skip; 1304 } 1305 1306 /* 1307 * New mbuf successfully loaded, update Rx ring and continue 1308 * processing. 1309 */ 1310 m = data->m; 1311 data->m = mnew; 1312 desc->physaddr = htole32(data->map->dm_segs->ds_addr); 1313 1314 /* finalize mbuf */ 1315 m->m_pkthdr.rcvif = ifp; 1316 m->m_pkthdr.len = m->m_len = 1317 (le32toh(desc->flags) >> 16) & 0xfff; 1318 1319 if (sc->sc_drvbpf != NULL) { 1320 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1321 uint32_t tsf_lo, tsf_hi; 1322 1323 /* get timestamp (low and high 32 bits) */ 1324 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1325 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1326 1327 tap->wr_tsf = 1328 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1329 tap->wr_flags = 0; 1330 tap->wr_rate = rt2560_rxrate(desc); 1331 tap->wr_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1332 tap->wr_chan_flags = 1333 htole16(ic->ic_ibss_chan->ic_flags); 1334 tap->wr_antenna = sc->rx_ant; 1335 tap->wr_antsignal = desc->rssi; 1336 1337 bpf_ops->bpf_mtap2(sc->sc_drvbpf, 1338 tap, sc->sc_txtap_len, m); 1339 } 1340 1341 wh = mtod(m, struct ieee80211_frame *); 1342 ni = ieee80211_find_rxnode(ic, 1343 (struct ieee80211_frame_min *)wh); 1344 1345 /* send the frame to the 802.11 layer */ 1346 ieee80211_input(ic, m, ni, desc->rssi, 0); 1347 1348 /* give rssi to the rate adatation algorithm */ 1349 rn = (struct rt2560_node *)ni; 1350 ieee80211_rssadapt_input(ic, ni, &rn->rssadapt, desc->rssi); 1351 1352 /* node is no longer needed */ 1353 ieee80211_free_node(ni); 1354 1355 skip: desc->flags = htole32(RT2560_RX_BUSY); 1356 1357 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1358 sc->rxq.cur_decrypt * RT2560_TX_DESC_SIZE, 1359 RT2560_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1360 1361 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt)); 1362 1363 sc->rxq.cur_decrypt = 1364 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1365 } 1366 1367 /* 1368 * In HostAP mode, ieee80211_input() will enqueue packets in if_snd 1369 * without calling if_start(). 1370 */ 1371 if (!IFQ_IS_EMPTY(&ifp->if_snd) && !(ifp->if_flags & IFF_OACTIVE)) 1372 rt2560_start(ifp); 1373 } 1374 1375 /* 1376 * Some frames were received. Pass them to the hardware cipher engine before 1377 * sending them to the 802.11 layer. 1378 */ 1379 void 1380 rt2560_rx_intr(struct rt2560_softc *sc) 1381 { 1382 struct rt2560_rx_desc *desc; 1383 struct rt2560_rx_data *data; 1384 1385 for (;;) { 1386 desc = &sc->rxq.desc[sc->rxq.cur]; 1387 data = &sc->rxq.data[sc->rxq.cur]; 1388 1389 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1390 sc->rxq.cur * RT2560_RX_DESC_SIZE, RT2560_RX_DESC_SIZE, 1391 BUS_DMASYNC_POSTREAD); 1392 1393 if (le32toh(desc->flags) & 1394 (RT2560_RX_BUSY | RT2560_RX_CIPHER_BUSY)) 1395 break; 1396 1397 data->drop = 0; 1398 1399 if (le32toh(desc->flags) & 1400 (RT2560_RX_PHY_ERROR | RT2560_RX_CRC_ERROR)) { 1401 /* 1402 * This should not happen since we did not request 1403 * to receive those frames when we filled RXCSR0. 1404 */ 1405 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n", 1406 le32toh(desc->flags))); 1407 data->drop = 1; 1408 } 1409 1410 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1411 DPRINTFN(5, ("bad length\n")); 1412 data->drop = 1; 1413 } 1414 1415 /* mark the frame for decryption */ 1416 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1417 1418 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1419 sc->rxq.cur * RT2560_RX_DESC_SIZE, RT2560_RX_DESC_SIZE, 1420 BUS_DMASYNC_PREWRITE); 1421 1422 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1423 1424 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1425 } 1426 1427 /* kick decrypt */ 1428 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1429 } 1430 1431 /* 1432 * This function is called periodically in IBSS mode when a new beacon must be 1433 * sent out. 1434 */ 1435 static void 1436 rt2560_beacon_expire(struct rt2560_softc *sc) 1437 { 1438 struct ieee80211com *ic = &sc->sc_ic; 1439 struct rt2560_tx_data *data; 1440 1441 if (ic->ic_opmode != IEEE80211_M_IBSS && 1442 ic->ic_opmode != IEEE80211_M_HOSTAP) 1443 return; 1444 1445 data = &sc->bcnq.data[sc->bcnq.next]; 1446 1447 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1448 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1449 bus_dmamap_unload(sc->sc_dmat, data->map); 1450 1451 ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1); 1452 1453 if (ic->ic_rawbpf != NULL) 1454 bpf_ops->bpf_mtap(ic->ic_rawbpf, data->m); 1455 rt2560_tx_bcn(sc, data->m, data->ni); 1456 1457 DPRINTFN(15, ("beacon expired\n")); 1458 1459 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1460 } 1461 1462 static void 1463 rt2560_wakeup_expire(struct rt2560_softc *sc) 1464 { 1465 DPRINTFN(15, ("wakeup expired\n")); 1466 } 1467 1468 int 1469 rt2560_intr(void *arg) 1470 { 1471 struct rt2560_softc *sc = arg; 1472 struct ifnet *ifp = &sc->sc_if; 1473 uint32_t r; 1474 1475 if (!device_is_active(&sc->sc_dev)) 1476 return 0; 1477 1478 if ((r = RAL_READ(sc, RT2560_CSR7)) == 0) 1479 return 0; /* not for us */ 1480 1481 /* disable interrupts */ 1482 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1483 1484 /* acknowledge interrupts */ 1485 RAL_WRITE(sc, RT2560_CSR7, r); 1486 1487 /* don't re-enable interrupts if we're shutting down */ 1488 if (!(ifp->if_flags & IFF_RUNNING)) 1489 return 0; 1490 1491 if (r & RT2560_BEACON_EXPIRE) 1492 rt2560_beacon_expire(sc); 1493 1494 if (r & RT2560_WAKEUP_EXPIRE) 1495 rt2560_wakeup_expire(sc); 1496 1497 if (r & RT2560_ENCRYPTION_DONE) 1498 rt2560_encryption_intr(sc); 1499 1500 if (r & RT2560_TX_DONE) 1501 rt2560_tx_intr(sc); 1502 1503 if (r & RT2560_PRIO_DONE) 1504 rt2560_prio_intr(sc); 1505 1506 if (r & RT2560_DECRYPTION_DONE) 1507 rt2560_decryption_intr(sc); 1508 1509 if (r & RT2560_RX_DONE) 1510 rt2560_rx_intr(sc); 1511 1512 /* re-enable interrupts */ 1513 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1514 1515 return 1; 1516 } 1517 1518 /* quickly determine if a given rate is CCK or OFDM */ 1519 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1520 1521 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */ 1522 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */ 1523 1524 #define RAL_SIFS 10 /* us */ 1525 1526 #define RT2560_RXTX_TURNAROUND 10 /* us */ 1527 1528 /* 1529 * This function is only used by the Rx radiotap code. It returns the rate at 1530 * which a given frame was received. 1531 */ 1532 static uint8_t 1533 rt2560_rxrate(struct rt2560_rx_desc *desc) 1534 { 1535 if (le32toh(desc->flags) & RT2560_RX_OFDM) { 1536 /* reverse function of rt2560_plcp_signal */ 1537 switch (desc->rate) { 1538 case 0xb: return 12; 1539 case 0xf: return 18; 1540 case 0xa: return 24; 1541 case 0xe: return 36; 1542 case 0x9: return 48; 1543 case 0xd: return 72; 1544 case 0x8: return 96; 1545 case 0xc: return 108; 1546 } 1547 } else { 1548 if (desc->rate == 10) 1549 return 2; 1550 if (desc->rate == 20) 1551 return 4; 1552 if (desc->rate == 55) 1553 return 11; 1554 if (desc->rate == 110) 1555 return 22; 1556 } 1557 return 2; /* should not get there */ 1558 } 1559 1560 /* 1561 * Return the expected ack rate for a frame transmitted at rate `rate'. 1562 * XXX: this should depend on the destination node basic rate set. 1563 */ 1564 static int 1565 rt2560_ack_rate(struct ieee80211com *ic, int rate) 1566 { 1567 switch (rate) { 1568 /* CCK rates */ 1569 case 2: 1570 return 2; 1571 case 4: 1572 case 11: 1573 case 22: 1574 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 1575 1576 /* OFDM rates */ 1577 case 12: 1578 case 18: 1579 return 12; 1580 case 24: 1581 case 36: 1582 return 24; 1583 case 48: 1584 case 72: 1585 case 96: 1586 case 108: 1587 return 48; 1588 } 1589 1590 /* default to 1Mbps */ 1591 return 2; 1592 } 1593 1594 /* 1595 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 1596 * The function automatically determines the operating mode depending on the 1597 * given rate. `flags' indicates whether short preamble is in use or not. 1598 */ 1599 static uint16_t 1600 rt2560_txtime(int len, int rate, uint32_t flags) 1601 { 1602 uint16_t txtime; 1603 1604 if (RAL_RATE_IS_OFDM(rate)) { 1605 /* IEEE Std 802.11a-1999, pp. 37 */ 1606 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1607 txtime = 16 + 4 + 4 * txtime + 6; 1608 } else { 1609 /* IEEE Std 802.11b-1999, pp. 28 */ 1610 txtime = (16 * len + rate - 1) / rate; 1611 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1612 txtime += 72 + 24; 1613 else 1614 txtime += 144 + 48; 1615 } 1616 return txtime; 1617 } 1618 1619 static uint8_t 1620 rt2560_plcp_signal(int rate) 1621 { 1622 switch (rate) { 1623 /* CCK rates (returned values are device-dependent) */ 1624 case 2: return 0x0; 1625 case 4: return 0x1; 1626 case 11: return 0x2; 1627 case 22: return 0x3; 1628 1629 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1630 case 12: return 0xb; 1631 case 18: return 0xf; 1632 case 24: return 0xa; 1633 case 36: return 0xe; 1634 case 48: return 0x9; 1635 case 72: return 0xd; 1636 case 96: return 0x8; 1637 case 108: return 0xc; 1638 1639 /* unsupported rates (should not get there) */ 1640 default: return 0xff; 1641 } 1642 } 1643 1644 static void 1645 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1646 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1647 { 1648 struct ieee80211com *ic = &sc->sc_ic; 1649 uint16_t plcp_length; 1650 int remainder; 1651 1652 desc->flags = htole32(flags); 1653 desc->flags |= htole32(len << 16); 1654 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) : 1655 htole32(RT2560_TX_BUSY | RT2560_TX_VALID); 1656 1657 desc->physaddr = htole32(physaddr); 1658 desc->wme = htole16( 1659 RT2560_AIFSN(2) | 1660 RT2560_LOGCWMIN(3) | 1661 RT2560_LOGCWMAX(8)); 1662 1663 /* setup PLCP fields */ 1664 desc->plcp_signal = rt2560_plcp_signal(rate); 1665 desc->plcp_service = 4; 1666 1667 len += IEEE80211_CRC_LEN; 1668 if (RAL_RATE_IS_OFDM(rate)) { 1669 desc->flags |= htole32(RT2560_TX_OFDM); 1670 1671 plcp_length = len & 0xfff; 1672 desc->plcp_length_hi = plcp_length >> 6; 1673 desc->plcp_length_lo = plcp_length & 0x3f; 1674 } else { 1675 plcp_length = (16 * len + rate - 1) / rate; 1676 if (rate == 22) { 1677 remainder = (16 * len) % 22; 1678 if (remainder != 0 && remainder < 7) 1679 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1680 } 1681 desc->plcp_length_hi = plcp_length >> 8; 1682 desc->plcp_length_lo = plcp_length & 0xff; 1683 1684 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1685 desc->plcp_signal |= 0x08; 1686 } 1687 } 1688 1689 static int 1690 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1691 struct ieee80211_node *ni) 1692 { 1693 struct rt2560_tx_desc *desc; 1694 struct rt2560_tx_data *data; 1695 int rate, error; 1696 1697 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1698 data = &sc->bcnq.data[sc->bcnq.cur]; 1699 1700 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1701 1702 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1703 BUS_DMA_NOWAIT); 1704 if (error != 0) { 1705 aprint_error_dev(&sc->sc_dev, "could not map mbuf (error %d)\n", 1706 error); 1707 m_freem(m0); 1708 return error; 1709 } 1710 1711 data->m = m0; 1712 data->ni = ni; 1713 1714 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1715 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, 1716 data->map->dm_segs->ds_addr); 1717 1718 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1719 BUS_DMASYNC_PREWRITE); 1720 bus_dmamap_sync(sc->sc_dmat, sc->bcnq.map, 1721 sc->bcnq.cur * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1722 BUS_DMASYNC_PREWRITE); 1723 1724 return 0; 1725 } 1726 1727 static int 1728 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1729 struct ieee80211_node *ni) 1730 { 1731 struct ieee80211com *ic = &sc->sc_ic; 1732 struct rt2560_tx_desc *desc; 1733 struct rt2560_tx_data *data; 1734 struct ieee80211_frame *wh; 1735 struct ieee80211_key *k; 1736 uint16_t dur; 1737 uint32_t flags = 0; 1738 int rate, error; 1739 1740 desc = &sc->prioq.desc[sc->prioq.cur]; 1741 data = &sc->prioq.data[sc->prioq.cur]; 1742 1743 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1744 1745 wh = mtod(m0, struct ieee80211_frame *); 1746 1747 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1748 k = ieee80211_crypto_encap(ic, ni, m0); 1749 if (k == NULL) { 1750 m_freem(m0); 1751 return ENOBUFS; 1752 } 1753 1754 /* packet header may have moved, reset our local pointer */ 1755 wh = mtod(m0, struct ieee80211_frame *); 1756 } 1757 1758 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1759 BUS_DMA_NOWAIT); 1760 if (error != 0) { 1761 aprint_error_dev(&sc->sc_dev, "could not map mbuf (error %d)\n", 1762 error); 1763 m_freem(m0); 1764 return error; 1765 } 1766 1767 if (sc->sc_drvbpf != NULL) { 1768 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1769 1770 tap->wt_flags = 0; 1771 tap->wt_rate = rate; 1772 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1773 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1774 tap->wt_antenna = sc->tx_ant; 1775 1776 bpf_ops->bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1777 } 1778 1779 data->m = m0; 1780 data->ni = ni; 1781 1782 wh = mtod(m0, struct ieee80211_frame *); 1783 1784 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1785 flags |= RT2560_TX_ACK; 1786 1787 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) + 1788 RAL_SIFS; 1789 *(uint16_t *)wh->i_dur = htole16(dur); 1790 1791 /* tell hardware to add timestamp for probe responses */ 1792 if ((wh->i_fc[0] & 1793 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1794 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1795 flags |= RT2560_TX_TIMESTAMP; 1796 } 1797 1798 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1799 data->map->dm_segs->ds_addr); 1800 1801 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1802 BUS_DMASYNC_PREWRITE); 1803 bus_dmamap_sync(sc->sc_dmat, sc->prioq.map, 1804 sc->prioq.cur * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1805 BUS_DMASYNC_PREWRITE); 1806 1807 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n", 1808 m0->m_pkthdr.len, sc->prioq.cur, rate)); 1809 1810 /* kick prio */ 1811 sc->prioq.queued++; 1812 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1813 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1814 1815 return 0; 1816 } 1817 1818 /* 1819 * Build a RTS control frame. 1820 */ 1821 static struct mbuf * 1822 rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh, 1823 uint16_t dur) 1824 { 1825 struct ieee80211_frame_rts *rts; 1826 struct mbuf *m; 1827 1828 MGETHDR(m, M_DONTWAIT, MT_DATA); 1829 if (m == NULL) { 1830 sc->sc_ic.ic_stats.is_tx_nobuf++; 1831 aprint_error_dev(&sc->sc_dev, "could not allocate RTS frame\n"); 1832 return NULL; 1833 } 1834 1835 rts = mtod(m, struct ieee80211_frame_rts *); 1836 1837 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL | 1838 IEEE80211_FC0_SUBTYPE_RTS; 1839 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS; 1840 *(uint16_t *)rts->i_dur = htole16(dur); 1841 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1); 1842 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2); 1843 1844 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts); 1845 1846 return m; 1847 } 1848 1849 static int 1850 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1851 struct ieee80211_node *ni) 1852 { 1853 struct ieee80211com *ic = &sc->sc_ic; 1854 struct rt2560_tx_desc *desc; 1855 struct rt2560_tx_data *data; 1856 struct rt2560_node *rn; 1857 struct ieee80211_rateset *rs; 1858 struct ieee80211_frame *wh; 1859 struct ieee80211_key *k; 1860 struct mbuf *mnew; 1861 uint16_t dur; 1862 uint32_t flags = 0; 1863 int rate, error; 1864 1865 wh = mtod(m0, struct ieee80211_frame *); 1866 1867 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1868 rs = &ic->ic_sup_rates[ic->ic_curmode]; 1869 rate = rs->rs_rates[ic->ic_fixed_rate]; 1870 } else { 1871 rs = &ni->ni_rates; 1872 rn = (struct rt2560_node *)ni; 1873 ni->ni_txrate = ieee80211_rssadapt_choose(&rn->rssadapt, rs, 1874 wh, m0->m_pkthdr.len, -1, NULL, 0); 1875 rate = rs->rs_rates[ni->ni_txrate]; 1876 } 1877 rate &= IEEE80211_RATE_VAL; 1878 1879 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1880 k = ieee80211_crypto_encap(ic, ni, m0); 1881 if (k == NULL) { 1882 m_freem(m0); 1883 return ENOBUFS; 1884 } 1885 1886 /* packet header may have moved, reset our local pointer */ 1887 wh = mtod(m0, struct ieee80211_frame *); 1888 } 1889 1890 /* 1891 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange 1892 * for directed frames only when the length of the MPDU is greater 1893 * than the length threshold indicated by [...]" ic_rtsthreshold. 1894 */ 1895 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 1896 m0->m_pkthdr.len > ic->ic_rtsthreshold) { 1897 struct mbuf *m; 1898 int rtsrate, ackrate; 1899 1900 rtsrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1901 ackrate = rt2560_ack_rate(ic, rate); 1902 1903 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) + 1904 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) + 1905 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) + 1906 3 * RAL_SIFS; 1907 1908 m = rt2560_get_rts(sc, wh, dur); 1909 1910 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1911 data = &sc->txq.data[sc->txq.cur_encrypt]; 1912 1913 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m, 1914 BUS_DMA_NOWAIT); 1915 if (error != 0) { 1916 aprint_error_dev(&sc->sc_dev, "could not map mbuf (error %d)\n", 1917 error); 1918 m_freem(m); 1919 m_freem(m0); 1920 return error; 1921 } 1922 1923 /* avoid multiple free() of the same node for each fragment */ 1924 ieee80211_ref_node(ni); 1925 1926 data->m = m; 1927 data->ni = ni; 1928 1929 /* RTS frames are not taken into account for rssadapt */ 1930 data->id.id_node = NULL; 1931 1932 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK | 1933 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1, 1934 data->map->dm_segs->ds_addr); 1935 1936 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1937 data->map->dm_mapsize, BUS_DMASYNC_PREWRITE); 1938 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1939 sc->txq.cur_encrypt * RT2560_TX_DESC_SIZE, 1940 RT2560_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1941 1942 sc->txq.queued++; 1943 sc->txq.cur_encrypt = 1944 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1945 1946 /* 1947 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the 1948 * asynchronous data frame shall be transmitted after the CTS 1949 * frame and a SIFS period. 1950 */ 1951 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1952 } 1953 1954 data = &sc->txq.data[sc->txq.cur_encrypt]; 1955 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1956 1957 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1958 BUS_DMA_NOWAIT); 1959 if (error != 0 && error != EFBIG) { 1960 aprint_error_dev(&sc->sc_dev, "could not map mbuf (error %d)\n", 1961 error); 1962 m_freem(m0); 1963 return error; 1964 } 1965 if (error != 0) { 1966 /* too many fragments, linearize */ 1967 1968 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1969 if (mnew == NULL) { 1970 m_freem(m0); 1971 return ENOMEM; 1972 } 1973 1974 M_COPY_PKTHDR(mnew, m0); 1975 if (m0->m_pkthdr.len > MHLEN) { 1976 MCLGET(mnew, M_DONTWAIT); 1977 if (!(mnew->m_flags & M_EXT)) { 1978 m_freem(m0); 1979 m_freem(mnew); 1980 return ENOMEM; 1981 } 1982 } 1983 1984 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1985 m_freem(m0); 1986 mnew->m_len = mnew->m_pkthdr.len; 1987 m0 = mnew; 1988 1989 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1990 BUS_DMA_NOWAIT); 1991 if (error != 0) { 1992 aprint_error_dev(&sc->sc_dev, "could not map mbuf (error %d)\n", 1993 error); 1994 m_freem(m0); 1995 return error; 1996 } 1997 1998 /* packet header have moved, reset our local pointer */ 1999 wh = mtod(m0, struct ieee80211_frame *); 2000 } 2001 2002 if (sc->sc_drvbpf != NULL) { 2003 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 2004 2005 tap->wt_flags = 0; 2006 tap->wt_rate = rate; 2007 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 2008 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 2009 tap->wt_antenna = sc->tx_ant; 2010 2011 bpf_ops->bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 2012 } 2013 2014 data->m = m0; 2015 data->ni = ni; 2016 2017 /* remember link conditions for rate adaptation algorithm */ 2018 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) { 2019 data->id.id_len = m0->m_pkthdr.len; 2020 data->id.id_rateidx = ni->ni_txrate; 2021 data->id.id_node = ni; 2022 data->id.id_rssi = ni->ni_rssi; 2023 } else 2024 data->id.id_node = NULL; 2025 2026 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 2027 flags |= RT2560_TX_ACK; 2028 2029 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate), 2030 ic->ic_flags) + RAL_SIFS; 2031 *(uint16_t *)wh->i_dur = htole16(dur); 2032 } 2033 2034 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 2035 data->map->dm_segs->ds_addr); 2036 2037 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 2038 BUS_DMASYNC_PREWRITE); 2039 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 2040 sc->txq.cur_encrypt * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 2041 BUS_DMASYNC_PREWRITE); 2042 2043 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n", 2044 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate)); 2045 2046 /* kick encrypt */ 2047 sc->txq.queued++; 2048 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 2049 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 2050 2051 return 0; 2052 } 2053 2054 static void 2055 rt2560_start(struct ifnet *ifp) 2056 { 2057 struct rt2560_softc *sc = ifp->if_softc; 2058 struct ieee80211com *ic = &sc->sc_ic; 2059 struct mbuf *m0; 2060 struct ieee80211_node *ni; 2061 struct ether_header *eh; 2062 2063 /* 2064 * net80211 may still try to send management frames even if the 2065 * IFF_RUNNING flag is not set... 2066 */ 2067 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2068 return; 2069 2070 for (;;) { 2071 IF_POLL(&ic->ic_mgtq, m0); 2072 if (m0 != NULL) { 2073 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2074 ifp->if_flags |= IFF_OACTIVE; 2075 break; 2076 } 2077 IF_DEQUEUE(&ic->ic_mgtq, m0); 2078 if (m0 == NULL) 2079 break; 2080 2081 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 2082 m0->m_pkthdr.rcvif = NULL; 2083 if (ic->ic_rawbpf != NULL) 2084 bpf_ops->bpf_mtap(ic->ic_rawbpf, m0); 2085 if (rt2560_tx_mgt(sc, m0, ni) != 0) 2086 break; 2087 2088 } else { 2089 if (ic->ic_state != IEEE80211_S_RUN) 2090 break; 2091 IFQ_DEQUEUE(&ifp->if_snd, m0); 2092 if (m0 == NULL) 2093 break; 2094 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 2095 ifp->if_flags |= IFF_OACTIVE; 2096 break; 2097 } 2098 2099 if (m0->m_len < sizeof (struct ether_header) && 2100 !(m0 = m_pullup(m0, sizeof (struct ether_header)))) 2101 continue; 2102 2103 eh = mtod(m0, struct ether_header *); 2104 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2105 if (ni == NULL) { 2106 m_freem(m0); 2107 continue; 2108 } 2109 if (ifp->if_bpf != NULL) 2110 bpf_ops->bpf_mtap(ifp->if_bpf, m0); 2111 2112 m0 = ieee80211_encap(ic, m0, ni); 2113 if (m0 == NULL) { 2114 ieee80211_free_node(ni); 2115 continue; 2116 } 2117 2118 if (ic->ic_rawbpf != NULL) 2119 bpf_ops->bpf_mtap(ic->ic_rawbpf, m0); 2120 2121 if (rt2560_tx_data(sc, m0, ni) != 0) { 2122 ieee80211_free_node(ni); 2123 ifp->if_oerrors++; 2124 break; 2125 } 2126 } 2127 2128 sc->sc_tx_timer = 5; 2129 ifp->if_timer = 1; 2130 } 2131 } 2132 2133 static void 2134 rt2560_watchdog(struct ifnet *ifp) 2135 { 2136 struct rt2560_softc *sc = ifp->if_softc; 2137 2138 ifp->if_timer = 0; 2139 2140 if (sc->sc_tx_timer > 0) { 2141 if (--sc->sc_tx_timer == 0) { 2142 aprint_error_dev(&sc->sc_dev, "device timeout\n"); 2143 rt2560_init(ifp); 2144 ifp->if_oerrors++; 2145 return; 2146 } 2147 ifp->if_timer = 1; 2148 } 2149 2150 ieee80211_watchdog(&sc->sc_ic); 2151 } 2152 2153 /* 2154 * This function allows for fast channel switching in monitor mode (used by 2155 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to 2156 * generate a new beacon frame. 2157 */ 2158 static int 2159 rt2560_reset(struct ifnet *ifp) 2160 { 2161 struct rt2560_softc *sc = ifp->if_softc; 2162 struct ieee80211com *ic = &sc->sc_ic; 2163 2164 if (ic->ic_opmode != IEEE80211_M_MONITOR) 2165 return ENETRESET; 2166 2167 rt2560_set_chan(sc, ic->ic_curchan); 2168 2169 return 0; 2170 } 2171 2172 int 2173 rt2560_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2174 { 2175 struct rt2560_softc *sc = ifp->if_softc; 2176 struct ieee80211com *ic = &sc->sc_ic; 2177 int s, error = 0; 2178 2179 s = splnet(); 2180 2181 switch (cmd) { 2182 case SIOCSIFFLAGS: 2183 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 2184 break; 2185 if (ifp->if_flags & IFF_UP) { 2186 if (ifp->if_flags & IFF_RUNNING) 2187 rt2560_update_promisc(sc); 2188 else 2189 rt2560_init(ifp); 2190 } else { 2191 if (ifp->if_flags & IFF_RUNNING) 2192 rt2560_stop(ifp, 1); 2193 } 2194 break; 2195 2196 case SIOCADDMULTI: 2197 case SIOCDELMULTI: 2198 /* XXX no h/w multicast filter? --dyoung */ 2199 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) 2200 error = 0; 2201 break; 2202 2203 case SIOCS80211CHANNEL: 2204 /* 2205 * This allows for fast channel switching in monitor mode 2206 * (used by kismet). In IBSS mode, we must explicitly reset 2207 * the interface to generate a new beacon frame. 2208 */ 2209 error = ieee80211_ioctl(ic, cmd, data); 2210 if (error == ENETRESET && 2211 ic->ic_opmode == IEEE80211_M_MONITOR) { 2212 rt2560_set_chan(sc, ic->ic_ibss_chan); 2213 error = 0; 2214 } 2215 break; 2216 2217 default: 2218 error = ieee80211_ioctl(ic, cmd, data); 2219 } 2220 2221 if (error == ENETRESET) { 2222 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 2223 (IFF_UP | IFF_RUNNING)) 2224 rt2560_init(ifp); 2225 error = 0; 2226 } 2227 2228 splx(s); 2229 2230 return error; 2231 } 2232 2233 static void 2234 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2235 { 2236 uint32_t tmp; 2237 int ntries; 2238 2239 for (ntries = 0; ntries < 100; ntries++) { 2240 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2241 break; 2242 DELAY(1); 2243 } 2244 if (ntries == 100) { 2245 aprint_error_dev(&sc->sc_dev, "could not write to BBP\n"); 2246 return; 2247 } 2248 2249 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2250 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2251 2252 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val)); 2253 } 2254 2255 static uint8_t 2256 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2257 { 2258 uint32_t val; 2259 int ntries; 2260 2261 val = RT2560_BBP_BUSY | reg << 8; 2262 RAL_WRITE(sc, RT2560_BBPCSR, val); 2263 2264 for (ntries = 0; ntries < 100; ntries++) { 2265 val = RAL_READ(sc, RT2560_BBPCSR); 2266 if (!(val & RT2560_BBP_BUSY)) 2267 return val & 0xff; 2268 DELAY(1); 2269 } 2270 2271 aprint_error_dev(&sc->sc_dev, "could not read from BBP\n"); 2272 return 0; 2273 } 2274 2275 static void 2276 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2277 { 2278 uint32_t tmp; 2279 int ntries; 2280 2281 for (ntries = 0; ntries < 100; ntries++) { 2282 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2283 break; 2284 DELAY(1); 2285 } 2286 if (ntries == 100) { 2287 aprint_error_dev(&sc->sc_dev, "could not write to RF\n"); 2288 return; 2289 } 2290 2291 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2292 (reg & 0x3); 2293 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2294 2295 /* remember last written value in sc */ 2296 sc->rf_regs[reg] = val; 2297 2298 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff)); 2299 } 2300 2301 static void 2302 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2303 { 2304 struct ieee80211com *ic = &sc->sc_ic; 2305 uint8_t power, tmp; 2306 u_int i, chan; 2307 2308 chan = ieee80211_chan2ieee(ic, c); 2309 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 2310 return; 2311 2312 if (IEEE80211_IS_CHAN_2GHZ(c)) 2313 power = min(sc->txpow[chan - 1], 31); 2314 else 2315 power = 31; 2316 2317 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power)); 2318 2319 switch (sc->rf_rev) { 2320 case RT2560_RF_2522: 2321 rt2560_rf_write(sc, RT2560_RF1, 0x00814); 2322 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2522_r2[chan - 1]); 2323 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x00040); 2324 break; 2325 2326 case RT2560_RF_2523: 2327 rt2560_rf_write(sc, RT2560_RF1, 0x08804); 2328 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2523_r2[chan - 1]); 2329 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x38044); 2330 rt2560_rf_write(sc, RT2560_RF4, 2331 (chan == 14) ? 0x00280 : 0x00286); 2332 break; 2333 2334 case RT2560_RF_2524: 2335 rt2560_rf_write(sc, RT2560_RF1, 0x0c808); 2336 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2524_r2[chan - 1]); 2337 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x00040); 2338 rt2560_rf_write(sc, RT2560_RF4, 2339 (chan == 14) ? 0x00280 : 0x00286); 2340 break; 2341 2342 case RT2560_RF_2525: 2343 rt2560_rf_write(sc, RT2560_RF1, 0x08808); 2344 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2345 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2346 rt2560_rf_write(sc, RT2560_RF4, 2347 (chan == 14) ? 0x00280 : 0x00286); 2348 2349 rt2560_rf_write(sc, RT2560_RF1, 0x08808); 2350 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2525_r2[chan - 1]); 2351 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2352 rt2560_rf_write(sc, RT2560_RF4, 2353 (chan == 14) ? 0x00280 : 0x00286); 2354 break; 2355 2356 case RT2560_RF_2525E: 2357 rt2560_rf_write(sc, RT2560_RF1, 0x08808); 2358 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2525e_r2[chan - 1]); 2359 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2360 rt2560_rf_write(sc, RT2560_RF4, 2361 (chan == 14) ? 0x00286 : 0x00282); 2362 break; 2363 2364 case RT2560_RF_2526: 2365 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2366 rt2560_rf_write(sc, RT2560_RF4, 2367 (chan & 1) ? 0x00386 : 0x00381); 2368 rt2560_rf_write(sc, RT2560_RF1, 0x08804); 2369 2370 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2526_r2[chan - 1]); 2371 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2372 rt2560_rf_write(sc, RT2560_RF4, 2373 (chan & 1) ? 0x00386 : 0x00381); 2374 break; 2375 2376 /* dual-band RF */ 2377 case RT2560_RF_5222: 2378 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2379 2380 rt2560_rf_write(sc, RT2560_RF1, rt2560_rf5222[i].r1); 2381 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf5222[i].r2); 2382 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x00040); 2383 rt2560_rf_write(sc, RT2560_RF4, rt2560_rf5222[i].r4); 2384 break; 2385 } 2386 2387 if (ic->ic_opmode != IEEE80211_M_MONITOR && 2388 ic->ic_state != IEEE80211_S_SCAN) { 2389 /* set Japan filter bit for channel 14 */ 2390 tmp = rt2560_bbp_read(sc, 70); 2391 2392 tmp &= ~RT2560_JAPAN_FILTER; 2393 if (chan == 14) 2394 tmp |= RT2560_JAPAN_FILTER; 2395 2396 rt2560_bbp_write(sc, 70, tmp); 2397 2398 DELAY(1000); /* RF needs a 1ms delay here */ 2399 rt2560_disable_rf_tune(sc); 2400 2401 /* clear CRC errors */ 2402 RAL_READ(sc, RT2560_CNT0); 2403 } 2404 } 2405 2406 /* 2407 * Disable RF auto-tuning. 2408 */ 2409 static void 2410 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2411 { 2412 uint32_t tmp; 2413 2414 if (sc->rf_rev != RT2560_RF_2523) { 2415 tmp = sc->rf_regs[RT2560_RF1] & ~RT2560_RF1_AUTOTUNE; 2416 rt2560_rf_write(sc, RT2560_RF1, tmp); 2417 } 2418 2419 tmp = sc->rf_regs[RT2560_RF3] & ~RT2560_RF3_AUTOTUNE; 2420 rt2560_rf_write(sc, RT2560_RF3, tmp); 2421 2422 DPRINTFN(2, ("disabling RF autotune\n")); 2423 } 2424 2425 /* 2426 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2427 * synchronization. 2428 */ 2429 static void 2430 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2431 { 2432 struct ieee80211com *ic = &sc->sc_ic; 2433 uint16_t logcwmin, preload; 2434 uint32_t tmp; 2435 2436 /* first, disable TSF synchronization */ 2437 RAL_WRITE(sc, RT2560_CSR14, 0); 2438 2439 tmp = 16 * ic->ic_bss->ni_intval; 2440 RAL_WRITE(sc, RT2560_CSR12, tmp); 2441 2442 RAL_WRITE(sc, RT2560_CSR13, 0); 2443 2444 logcwmin = 5; 2445 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024; 2446 tmp = logcwmin << 16 | preload; 2447 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2448 2449 /* finally, enable TSF synchronization */ 2450 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2451 if (ic->ic_opmode == IEEE80211_M_STA) 2452 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2453 else 2454 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2455 RT2560_ENABLE_BEACON_GENERATOR; 2456 RAL_WRITE(sc, RT2560_CSR14, tmp); 2457 2458 DPRINTF(("enabling TSF synchronization\n")); 2459 } 2460 2461 static void 2462 rt2560_update_plcp(struct rt2560_softc *sc) 2463 { 2464 struct ieee80211com *ic = &sc->sc_ic; 2465 2466 /* no short preamble for 1Mbps */ 2467 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2468 2469 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2470 /* values taken from the reference driver */ 2471 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2472 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2473 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2474 } else { 2475 /* same values as above or'ed 0x8 */ 2476 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2477 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2478 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2479 } 2480 2481 DPRINTF(("updating PLCP for %s preamble\n", 2482 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long")); 2483 } 2484 2485 /* 2486 * IEEE 802.11a uses short slot time. Refer to IEEE Std 802.11-1999 pp. 85 to 2487 * know how these values are computed. 2488 */ 2489 static void 2490 rt2560_update_slot(struct ifnet *ifp) 2491 { 2492 struct rt2560_softc *sc = ifp->if_softc; 2493 struct ieee80211com *ic = &sc->sc_ic; 2494 uint8_t slottime; 2495 uint16_t sifs, pifs, difs, eifs; 2496 uint32_t tmp; 2497 2498 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2499 2500 /* define the MAC slot boundaries */ 2501 sifs = RAL_SIFS - RT2560_RXTX_TURNAROUND; 2502 pifs = sifs + slottime; 2503 difs = sifs + 2 * slottime; 2504 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2505 2506 tmp = RAL_READ(sc, RT2560_CSR11); 2507 tmp = (tmp & ~0x1f00) | slottime << 8; 2508 RAL_WRITE(sc, RT2560_CSR11, tmp); 2509 2510 tmp = pifs << 16 | sifs; 2511 RAL_WRITE(sc, RT2560_CSR18, tmp); 2512 2513 tmp = eifs << 16 | difs; 2514 RAL_WRITE(sc, RT2560_CSR19, tmp); 2515 2516 DPRINTF(("setting slottime to %uus\n", slottime)); 2517 } 2518 2519 static void 2520 rt2560_set_basicrates(struct rt2560_softc *sc) 2521 { 2522 struct ieee80211com *ic = &sc->sc_ic; 2523 2524 /* update basic rate set */ 2525 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2526 /* 11b basic rates: 1, 2Mbps */ 2527 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2528 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 2529 /* 11a basic rates: 6, 12, 24Mbps */ 2530 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2531 } else { 2532 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2533 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2534 } 2535 } 2536 2537 static void 2538 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2539 { 2540 uint32_t tmp; 2541 2542 /* set ON period to 70ms and OFF period to 30ms */ 2543 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2544 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2545 } 2546 2547 static void 2548 rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid) 2549 { 2550 uint32_t tmp; 2551 2552 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2553 RAL_WRITE(sc, RT2560_CSR5, tmp); 2554 2555 tmp = bssid[4] | bssid[5] << 8; 2556 RAL_WRITE(sc, RT2560_CSR6, tmp); 2557 2558 DPRINTF(("setting BSSID to %s\n", ether_sprintf(bssid))); 2559 } 2560 2561 static void 2562 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2563 { 2564 uint32_t tmp; 2565 2566 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2567 RAL_WRITE(sc, RT2560_CSR3, tmp); 2568 2569 tmp = addr[4] | addr[5] << 8; 2570 RAL_WRITE(sc, RT2560_CSR4, tmp); 2571 2572 DPRINTF(("setting MAC address to %s\n", ether_sprintf(addr))); 2573 } 2574 2575 static void 2576 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2577 { 2578 uint32_t tmp; 2579 2580 tmp = RAL_READ(sc, RT2560_CSR3); 2581 addr[0] = tmp & 0xff; 2582 addr[1] = (tmp >> 8) & 0xff; 2583 addr[2] = (tmp >> 16) & 0xff; 2584 addr[3] = (tmp >> 24); 2585 2586 tmp = RAL_READ(sc, RT2560_CSR4); 2587 addr[4] = tmp & 0xff; 2588 addr[5] = (tmp >> 8) & 0xff; 2589 } 2590 2591 static void 2592 rt2560_update_promisc(struct rt2560_softc *sc) 2593 { 2594 struct ifnet *ifp = &sc->sc_if; 2595 uint32_t tmp; 2596 2597 tmp = RAL_READ(sc, RT2560_RXCSR0); 2598 2599 tmp &= ~RT2560_DROP_NOT_TO_ME; 2600 if (!(ifp->if_flags & IFF_PROMISC)) 2601 tmp |= RT2560_DROP_NOT_TO_ME; 2602 2603 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2604 2605 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2606 "entering" : "leaving")); 2607 } 2608 2609 static void 2610 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2611 { 2612 uint32_t tmp; 2613 uint8_t tx; 2614 2615 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2616 if (antenna == 1) 2617 tx |= RT2560_BBP_ANTA; 2618 else if (antenna == 2) 2619 tx |= RT2560_BBP_ANTB; 2620 else 2621 tx |= RT2560_BBP_DIVERSITY; 2622 2623 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2624 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2625 sc->rf_rev == RT2560_RF_5222) 2626 tx |= RT2560_BBP_FLIPIQ; 2627 2628 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2629 2630 /* update values for CCK and OFDM in BBPCSR1 */ 2631 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2632 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2633 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2634 } 2635 2636 static void 2637 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2638 { 2639 uint8_t rx; 2640 2641 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2642 if (antenna == 1) 2643 rx |= RT2560_BBP_ANTA; 2644 else if (antenna == 2) 2645 rx |= RT2560_BBP_ANTB; 2646 else 2647 rx |= RT2560_BBP_DIVERSITY; 2648 2649 /* need to force no I/Q flip for RF 2525e and 2526 */ 2650 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2651 rx &= ~RT2560_BBP_FLIPIQ; 2652 2653 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2654 } 2655 2656 static const char * 2657 rt2560_get_rf(int rev) 2658 { 2659 switch (rev) { 2660 case RT2560_RF_2522: return "RT2522"; 2661 case RT2560_RF_2523: return "RT2523"; 2662 case RT2560_RF_2524: return "RT2524"; 2663 case RT2560_RF_2525: return "RT2525"; 2664 case RT2560_RF_2525E: return "RT2525e"; 2665 case RT2560_RF_2526: return "RT2526"; 2666 case RT2560_RF_5222: return "RT5222"; 2667 default: return "unknown"; 2668 } 2669 } 2670 2671 static void 2672 rt2560_read_eeprom(struct rt2560_softc *sc) 2673 { 2674 uint16_t val; 2675 int i; 2676 2677 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2678 sc->rf_rev = (val >> 11) & 0x1f; 2679 sc->hw_radio = (val >> 10) & 0x1; 2680 sc->led_mode = (val >> 6) & 0x7; 2681 sc->rx_ant = (val >> 4) & 0x3; 2682 sc->tx_ant = (val >> 2) & 0x3; 2683 sc->nb_ant = val & 0x3; 2684 2685 /* read default values for BBP registers */ 2686 for (i = 0; i < 16; i++) { 2687 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2688 sc->bbp_prom[i].reg = val >> 8; 2689 sc->bbp_prom[i].val = val & 0xff; 2690 } 2691 2692 /* read Tx power for all b/g channels */ 2693 for (i = 0; i < 14 / 2; i++) { 2694 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2695 sc->txpow[i * 2] = val >> 8; 2696 sc->txpow[i * 2 + 1] = val & 0xff; 2697 } 2698 } 2699 2700 static int 2701 rt2560_bbp_init(struct rt2560_softc *sc) 2702 { 2703 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2704 int i, ntries; 2705 2706 /* wait for BBP to be ready */ 2707 for (ntries = 0; ntries < 100; ntries++) { 2708 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2709 break; 2710 DELAY(1); 2711 } 2712 if (ntries == 100) { 2713 aprint_error_dev(&sc->sc_dev, "timeout waiting for BBP\n"); 2714 return EIO; 2715 } 2716 2717 /* initialize BBP registers to default values */ 2718 for (i = 0; i < N(rt2560_def_bbp); i++) { 2719 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2720 rt2560_def_bbp[i].val); 2721 } 2722 #if 0 2723 /* initialize BBP registers to values stored in EEPROM */ 2724 for (i = 0; i < 16; i++) { 2725 if (sc->bbp_prom[i].reg == 0xff) 2726 continue; 2727 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2728 } 2729 #endif 2730 2731 return 0; 2732 #undef N 2733 } 2734 2735 static int 2736 rt2560_init(struct ifnet *ifp) 2737 { 2738 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2739 struct rt2560_softc *sc = ifp->if_softc; 2740 struct ieee80211com *ic = &sc->sc_ic; 2741 uint32_t tmp; 2742 int i; 2743 2744 /* for CardBus, power on the socket */ 2745 if (!(sc->sc_flags & RT2560_ENABLED)) { 2746 if (sc->sc_enable != NULL && (*sc->sc_enable)(sc) != 0) { 2747 aprint_error_dev(&sc->sc_dev, "could not enable device\n"); 2748 return EIO; 2749 } 2750 sc->sc_flags |= RT2560_ENABLED; 2751 } 2752 2753 rt2560_stop(ifp, 1); 2754 2755 /* setup tx rings */ 2756 tmp = RT2560_PRIO_RING_COUNT << 24 | 2757 RT2560_ATIM_RING_COUNT << 16 | 2758 RT2560_TX_RING_COUNT << 8 | 2759 RT2560_TX_DESC_SIZE; 2760 2761 /* rings _must_ be initialized in this _exact_ order! */ 2762 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2763 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2764 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2765 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2766 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2767 2768 /* setup rx ring */ 2769 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2770 2771 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2772 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2773 2774 /* initialize MAC registers to default values */ 2775 for (i = 0; i < N(rt2560_def_mac); i++) 2776 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2777 2778 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2779 rt2560_set_macaddr(sc, ic->ic_myaddr); 2780 2781 /* set basic rate set (will be updated later) */ 2782 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2783 2784 rt2560_update_slot(ifp); 2785 rt2560_update_plcp(sc); 2786 rt2560_update_led(sc, 0, 0); 2787 2788 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2789 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2790 2791 if (rt2560_bbp_init(sc) != 0) { 2792 rt2560_stop(ifp, 1); 2793 return EIO; 2794 } 2795 2796 rt2560_set_txantenna(sc, 1); 2797 rt2560_set_rxantenna(sc, 1); 2798 2799 /* set default BSS channel */ 2800 ic->ic_bss->ni_chan = ic->ic_ibss_chan; 2801 rt2560_set_chan(sc, ic->ic_bss->ni_chan); 2802 2803 /* kick Rx */ 2804 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2805 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2806 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2807 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2808 tmp |= RT2560_DROP_TODS; 2809 if (!(ifp->if_flags & IFF_PROMISC)) 2810 tmp |= RT2560_DROP_NOT_TO_ME; 2811 } 2812 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2813 2814 /* clear old FCS and Rx FIFO errors */ 2815 RAL_READ(sc, RT2560_CNT0); 2816 RAL_READ(sc, RT2560_CNT4); 2817 2818 /* clear any pending interrupts */ 2819 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2820 2821 /* enable interrupts */ 2822 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2823 2824 ifp->if_flags &= ~IFF_OACTIVE; 2825 ifp->if_flags |= IFF_RUNNING; 2826 2827 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2828 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2829 else 2830 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2831 2832 return 0; 2833 #undef N 2834 } 2835 2836 static void 2837 rt2560_stop(struct ifnet *ifp, int disable) 2838 { 2839 struct rt2560_softc *sc = ifp->if_softc; 2840 struct ieee80211com *ic = &sc->sc_ic; 2841 2842 sc->sc_tx_timer = 0; 2843 ifp->if_timer = 0; 2844 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2845 2846 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2847 2848 /* abort Tx */ 2849 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2850 2851 /* disable Rx */ 2852 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2853 2854 /* reset ASIC (and thus, BBP) */ 2855 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2856 RAL_WRITE(sc, RT2560_CSR1, 0); 2857 2858 /* disable interrupts */ 2859 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2860 2861 /* clear any pending interrupt */ 2862 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2863 2864 /* reset Tx and Rx rings */ 2865 rt2560_reset_tx_ring(sc, &sc->txq); 2866 rt2560_reset_tx_ring(sc, &sc->atimq); 2867 rt2560_reset_tx_ring(sc, &sc->prioq); 2868 rt2560_reset_tx_ring(sc, &sc->bcnq); 2869 rt2560_reset_rx_ring(sc, &sc->rxq); 2870 2871 } 2872
Indexes created Tue Oct 28 12:10:06 GMT 2025