if_ural.c revision 1.2
1 /* $NetBSD: if_ural.c,v 1.2 2005/07/04 17:46:31 drochner Exp $ */ 2 /* $OpenBSD: if_ral.c,v 1.36 2005/06/20 18:54:59 damien Exp $ */ 3 4 /*- 5 * Copyright (c) 2005 6 * Damien Bergamini <damien.bergamini (at) free.fr> 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 /*- 22 * Ralink Technology RT2500USB chipset driver 23 * http://www.ralinktech.com/ 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_ural.c,v 1.2 2005/07/04 17:46:31 drochner Exp $"); 28 29 #include "bpfilter.h" 30 31 #include <sys/param.h> 32 #include <sys/sockio.h> 33 #include <sys/sysctl.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/conf.h> 40 #include <sys/device.h> 41 42 #include <machine/bus.h> 43 #include <machine/endian.h> 44 #include <machine/intr.h> 45 46 #if NBPFILTER > 0 47 #include <net/bpf.h> 48 #endif 49 #include <net/if.h> 50 #include <net/if_arp.h> 51 #include <net/if_dl.h> 52 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 #include <net/if_types.h> 55 56 #include <netinet/in.h> 57 #include <netinet/in_systm.h> 58 #include <netinet/in_var.h> 59 #include <netinet/ip.h> 60 61 #include <net80211/ieee80211_netbsd.h> 62 #include <net80211/ieee80211_var.h> 63 #include <net80211/ieee80211_radiotap.h> 64 65 #include <dev/usb/usb.h> 66 #include <dev/usb/usbdi.h> 67 #include <dev/usb/usbdi_util.h> 68 #include <dev/usb/usbdevs.h> 69 70 #include <dev/usb/if_uralreg.h> 71 #include <dev/usb/if_uralvar.h> 72 73 #ifdef USB_DEBUG 74 #define URAL_DEBUG 75 #endif 76 77 #ifdef URAL_DEBUG 78 #define DPRINTF(x) do { if (ural_debug) logprintf x; } while (0) 79 #define DPRINTFN(n, x) do { if (ural_debug >= (n)) logprintf x; } while (0) 80 int ural_debug = 0; 81 #else 82 #define DPRINTF(x) 83 #define DPRINTFN(n, x) 84 #endif 85 86 /* various supported device vendors/products */ 87 static const struct usb_devno ural_devs[] = { 88 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G }, 89 { USB_VENDOR_ASUSTEK, USB_PRODUCT_RALINK_RT2570 }, 90 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050 }, 91 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54G }, 92 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GP }, 93 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU }, 94 { USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DWLG122 }, 95 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_KG54 }, 96 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_KG54AI }, 97 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2570 }, 98 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2570_2 }, 99 { USB_VENDOR_SMC, USB_PRODUCT_SMC_2862WG }, 100 }; 101 102 Static int ural_alloc_tx_list(struct ural_softc *); 103 Static void ural_free_tx_list(struct ural_softc *); 104 Static int ural_alloc_rx_list(struct ural_softc *); 105 Static void ural_free_rx_list(struct ural_softc *); 106 Static int ural_media_change(struct ifnet *); 107 Static void ural_next_scan(void *); 108 Static void ural_task(void *); 109 Static int ural_newstate(struct ieee80211com *, 110 enum ieee80211_state, int); 111 Static void ural_txeof(usbd_xfer_handle, usbd_private_handle, 112 usbd_status); 113 Static void ural_rxeof(usbd_xfer_handle, usbd_private_handle, 114 usbd_status); 115 Static int ural_ack_rate(int); 116 Static uint16_t ural_txtime(int, int, uint32_t); 117 Static uint8_t ural_plcp_signal(int); 118 Static void ural_setup_tx_desc(struct ural_softc *, 119 struct ural_tx_desc *, uint32_t, int, int); 120 Static int ural_tx_bcn(struct ural_softc *, struct mbuf *, 121 struct ieee80211_node *); 122 Static int ural_tx_mgt(struct ural_softc *, struct mbuf *, 123 struct ieee80211_node *); 124 Static int ural_tx_data(struct ural_softc *, struct mbuf *, 125 struct ieee80211_node *); 126 Static void ural_start(struct ifnet *); 127 Static void ural_watchdog(struct ifnet *); 128 Static int ural_ioctl(struct ifnet *, u_long, caddr_t); 129 Static void ural_eeprom_read(struct ural_softc *, uint16_t, void *, 130 int); 131 Static uint16_t ural_read(struct ural_softc *, uint16_t); 132 Static void ural_read_multi(struct ural_softc *, uint16_t, void *, 133 int); 134 Static void ural_write(struct ural_softc *, uint16_t, uint16_t); 135 Static void ural_write_multi(struct ural_softc *, uint16_t, void *, 136 int); 137 Static void ural_bbp_write(struct ural_softc *, uint8_t, uint8_t); 138 Static uint8_t ural_bbp_read(struct ural_softc *, uint8_t); 139 Static void ural_rf_write(struct ural_softc *, uint8_t, uint32_t); 140 Static void ural_set_chan(struct ural_softc *, 141 struct ieee80211_channel *); 142 Static void ural_disable_rf_tune(struct ural_softc *); 143 Static void ural_enable_tsf_sync(struct ural_softc *); 144 Static void ural_set_bssid(struct ural_softc *, uint8_t *); 145 Static void ural_set_macaddr(struct ural_softc *, uint8_t *); 146 Static void ural_update_promisc(struct ural_softc *); 147 Static const char *ural_get_rf(int); 148 Static void ural_read_eeprom(struct ural_softc *); 149 Static int ural_bbp_init(struct ural_softc *); 150 Static void ural_set_txantenna(struct ural_softc *, int); 151 Static void ural_set_rxantenna(struct ural_softc *, int); 152 Static int ural_init(struct ifnet *); 153 Static void ural_stop(struct ifnet *, int); 154 155 /* 156 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 157 */ 158 static const struct ieee80211_rateset ural_rateset_11a = 159 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 160 161 static const struct ieee80211_rateset ural_rateset_11b = 162 { 4, { 2, 4, 11, 22 } }; 163 164 static const struct ieee80211_rateset ural_rateset_11g = 165 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 166 167 /* 168 * Default values for MAC registers; values taken from the reference driver. 169 */ 170 static const struct { 171 uint16_t reg; 172 uint16_t val; 173 } ural_def_mac[] = { 174 { RAL_TXRX_CSR5, 0x8c8d }, 175 { RAL_TXRX_CSR6, 0x8b8a }, 176 { RAL_TXRX_CSR7, 0x8687 }, 177 { RAL_TXRX_CSR8, 0x0085 }, 178 { RAL_MAC_CSR13, 0x1111 }, 179 { RAL_MAC_CSR14, 0x1e11 }, 180 { RAL_TXRX_CSR21, 0xe78f }, 181 { RAL_MAC_CSR9, 0xff1d }, 182 { RAL_MAC_CSR11, 0x0002 }, 183 { RAL_MAC_CSR22, 0x0053 }, 184 { RAL_MAC_CSR15, 0x0000 }, 185 { RAL_MAC_CSR8, 0x0780 }, 186 { RAL_TXRX_CSR19, 0x0000 }, 187 { RAL_TXRX_CSR18, 0x005a }, 188 { RAL_PHY_CSR2, 0x0000 }, 189 { RAL_TXRX_CSR0, 0x1ec0 }, 190 { RAL_PHY_CSR4, 0x000f } 191 }; 192 193 /* 194 * Default values for BBP registers; values taken from the reference driver. 195 */ 196 static const struct { 197 uint8_t reg; 198 uint8_t val; 199 } ural_def_bbp[] = { 200 { 3, 0x02 }, 201 { 4, 0x19 }, 202 { 14, 0x1c }, 203 { 15, 0x30 }, 204 { 16, 0xac }, 205 { 17, 0x48 }, 206 { 18, 0x18 }, 207 { 19, 0xff }, 208 { 20, 0x1e }, 209 { 21, 0x08 }, 210 { 22, 0x08 }, 211 { 23, 0x08 }, 212 { 24, 0x80 }, 213 { 25, 0x50 }, 214 { 26, 0x08 }, 215 { 27, 0x23 }, 216 { 30, 0x10 }, 217 { 31, 0x2b }, 218 { 32, 0xb9 }, 219 { 34, 0x12 }, 220 { 35, 0x50 }, 221 { 39, 0xc4 }, 222 { 40, 0x02 }, 223 { 41, 0x60 }, 224 { 53, 0x10 }, 225 { 54, 0x18 }, 226 { 56, 0x08 }, 227 { 57, 0x10 }, 228 { 58, 0x08 }, 229 { 61, 0x60 }, 230 { 62, 0x10 }, 231 { 75, 0xff } 232 }; 233 234 /* 235 * Default values for RF register R2 indexed by channel numbers. 236 */ 237 static const uint32_t ural_rf2522_r2[] = { 238 0x307f6, 0x307fb, 0x30800, 0x30805, 0x3080a, 0x3080f, 0x30814, 239 0x30819, 0x3081e, 0x30823, 0x30828, 0x3082d, 0x30832, 0x3083e 240 }; 241 242 static const uint32_t ural_rf2523_r2[] = { 243 0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d, 244 0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346 245 }; 246 247 static const uint32_t ural_rf2524_r2[] = { 248 0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d, 249 0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346 250 }; 251 252 static const uint32_t ural_rf2525_r2[] = { 253 0x20327, 0x20328, 0x20329, 0x2032a, 0x2032b, 0x2032c, 0x2032d, 254 0x2032e, 0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20346 255 }; 256 257 static const uint32_t ural_rf2525_hi_r2[] = { 258 0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20344, 0x20345, 259 0x20346, 0x20347, 0x20348, 0x20349, 0x2034a, 0x2034b, 0x2034e 260 }; 261 262 static const uint32_t ural_rf2525e_r2[] = { 263 0x2044d, 0x2044e, 0x2044f, 0x20460, 0x20461, 0x20462, 0x20463, 264 0x20464, 0x20465, 0x20466, 0x20467, 0x20468, 0x20469, 0x2046b 265 }; 266 267 static const uint32_t ural_rf2526_hi_r2[] = { 268 0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d, 0x0022d, 269 0x0022e, 0x0022e, 0x0022f, 0x0022d, 0x00240, 0x00240, 0x00241 270 }; 271 272 static const uint32_t ural_rf2526_r2[] = { 273 0x00226, 0x00227, 0x00227, 0x00228, 0x00228, 0x00229, 0x00229, 274 0x0022a, 0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d 275 }; 276 277 /* 278 * For dual-band RF, RF registers R1 and R4 also depend on channel number; 279 * values taken from the reference driver. 280 */ 281 static const struct { 282 uint8_t chan; 283 uint32_t r1; 284 uint32_t r2; 285 uint32_t r4; 286 } ural_rf5222[] = { 287 /* channels in the 2.4GHz band */ 288 { 1, 0x08808, 0x0044d, 0x00282 }, 289 { 2, 0x08808, 0x0044e, 0x00282 }, 290 { 3, 0x08808, 0x0044f, 0x00282 }, 291 { 4, 0x08808, 0x00460, 0x00282 }, 292 { 5, 0x08808, 0x00461, 0x00282 }, 293 { 6, 0x08808, 0x00462, 0x00282 }, 294 { 7, 0x08808, 0x00463, 0x00282 }, 295 { 8, 0x08808, 0x00464, 0x00282 }, 296 { 9, 0x08808, 0x00465, 0x00282 }, 297 { 10, 0x08808, 0x00466, 0x00282 }, 298 { 11, 0x08808, 0x00467, 0x00282 }, 299 { 12, 0x08808, 0x00468, 0x00282 }, 300 { 13, 0x08808, 0x00469, 0x00282 }, 301 { 14, 0x08808, 0x0046b, 0x00286 }, 302 303 /* channels in the 5.2GHz band */ 304 { 36, 0x08804, 0x06225, 0x00287 }, 305 { 40, 0x08804, 0x06226, 0x00287 }, 306 { 44, 0x08804, 0x06227, 0x00287 }, 307 { 48, 0x08804, 0x06228, 0x00287 }, 308 { 52, 0x08804, 0x06229, 0x00287 }, 309 { 56, 0x08804, 0x0622a, 0x00287 }, 310 { 60, 0x08804, 0x0622b, 0x00287 }, 311 { 64, 0x08804, 0x0622c, 0x00287 }, 312 313 { 100, 0x08804, 0x02200, 0x00283 }, 314 { 104, 0x08804, 0x02201, 0x00283 }, 315 { 108, 0x08804, 0x02202, 0x00283 }, 316 { 112, 0x08804, 0x02203, 0x00283 }, 317 { 116, 0x08804, 0x02204, 0x00283 }, 318 { 120, 0x08804, 0x02205, 0x00283 }, 319 { 124, 0x08804, 0x02206, 0x00283 }, 320 { 128, 0x08804, 0x02207, 0x00283 }, 321 { 132, 0x08804, 0x02208, 0x00283 }, 322 { 136, 0x08804, 0x02209, 0x00283 }, 323 { 140, 0x08804, 0x0220a, 0x00283 }, 324 325 { 149, 0x08808, 0x02429, 0x00281 }, 326 { 153, 0x08808, 0x0242b, 0x00281 }, 327 { 157, 0x08808, 0x0242d, 0x00281 }, 328 { 161, 0x08808, 0x0242f, 0x00281 } 329 }; 330 331 USB_DECLARE_DRIVER(ural); 332 333 USB_MATCH(ural) 334 { 335 USB_MATCH_START(ural, uaa); 336 337 if (uaa->iface != NULL) 338 return UMATCH_NONE; 339 340 return (usb_lookup(ural_devs, uaa->vendor, uaa->product) != NULL) ? 341 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 342 } 343 344 USB_ATTACH(ural) 345 { 346 USB_ATTACH_START(ural, sc, uaa); 347 struct ieee80211com *ic = &sc->sc_ic; 348 struct ifnet *ifp = &sc->sc_if; 349 usb_interface_descriptor_t *id; 350 usb_endpoint_descriptor_t *ed; 351 usbd_status error; 352 char *devinfop; 353 int i; 354 355 sc->sc_udev = uaa->device; 356 357 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 358 USB_ATTACH_SETUP; 359 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 360 usbd_devinfo_free(devinfop); 361 362 if (usbd_set_config_no(sc->sc_udev, RAL_CONFIG_NO, 0) != 0) { 363 printf("%s: could not set configuration no\n", 364 USBDEVNAME(sc->sc_dev)); 365 USB_ATTACH_ERROR_RETURN; 366 } 367 368 /* get the first interface handle */ 369 error = usbd_device2interface_handle(sc->sc_udev, RAL_IFACE_INDEX, 370 &sc->sc_iface); 371 if (error != 0) { 372 printf("%s: could not get interface handle\n", 373 USBDEVNAME(sc->sc_dev)); 374 USB_ATTACH_ERROR_RETURN; 375 } 376 377 /* 378 * Find endpoints. 379 */ 380 id = usbd_get_interface_descriptor(sc->sc_iface); 381 382 sc->sc_rx_no = sc->sc_tx_no = -1; 383 for (i = 0; i < id->bNumEndpoints; i++) { 384 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 385 if (ed == NULL) { 386 printf("%s: no endpoint descriptor for iface %d\n", 387 USBDEVNAME(sc->sc_dev), i); 388 USB_ATTACH_ERROR_RETURN; 389 } 390 391 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 392 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 393 sc->sc_rx_no = ed->bEndpointAddress; 394 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 395 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 396 sc->sc_tx_no = ed->bEndpointAddress; 397 } 398 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 399 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 400 USB_ATTACH_ERROR_RETURN; 401 } 402 403 usb_init_task(&sc->sc_task, ural_task, sc); 404 callout_init(&sc->scan_ch); 405 406 /* retrieve RT2570 rev. no */ 407 sc->asic_rev = ural_read(sc, RAL_MAC_CSR0); 408 409 /* retrieve MAC address and various other things from EEPROM */ 410 ural_read_eeprom(sc); 411 412 printf("%s: MAC/BBP RT2570 (rev 0x%02x), RF %s, address %s\n", 413 USBDEVNAME(sc->sc_dev), sc->asic_rev, ural_get_rf(sc->rf_rev), 414 ether_sprintf(ic->ic_myaddr)); 415 416 ic->ic_ifp = ifp; 417 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 418 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 419 ic->ic_state = IEEE80211_S_INIT; 420 421 /* set device capabilities */ 422 ic->ic_caps = IEEE80211_C_MONITOR | IEEE80211_C_IBSS | 423 IEEE80211_C_HOSTAP | IEEE80211_C_SHPREAMBLE | IEEE80211_C_SHSLOT | 424 IEEE80211_C_PMGT | IEEE80211_C_TXPMGT | IEEE80211_C_WEP; 425 426 if (sc->rf_rev == RAL_RF_5222) { 427 /* set supported .11a rates */ 428 ic->ic_sup_rates[IEEE80211_MODE_11A] = ural_rateset_11a; 429 430 /* set supported .11a channels */ 431 for (i = 36; i <= 64; i += 4) { 432 ic->ic_channels[i].ic_freq = 433 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 434 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 435 } 436 for (i = 100; i <= 140; i += 4) { 437 ic->ic_channels[i].ic_freq = 438 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 439 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 440 } 441 for (i = 149; i <= 161; i += 4) { 442 ic->ic_channels[i].ic_freq = 443 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 444 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 445 } 446 } 447 448 /* set supported .11b and .11g rates */ 449 ic->ic_sup_rates[IEEE80211_MODE_11B] = ural_rateset_11b; 450 ic->ic_sup_rates[IEEE80211_MODE_11G] = ural_rateset_11g; 451 452 /* set supported .11b and .11g channels (1 through 14) */ 453 for (i = 1; i <= 14; i++) { 454 ic->ic_channels[i].ic_freq = 455 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 456 ic->ic_channels[i].ic_flags = 457 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 458 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 459 } 460 461 ifp->if_softc = sc; 462 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 463 ifp->if_init = ural_init; 464 ifp->if_stop = ural_stop; 465 ifp->if_ioctl = ural_ioctl; 466 ifp->if_start = ural_start; 467 ifp->if_watchdog = ural_watchdog; 468 IFQ_SET_READY(&ifp->if_snd); 469 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 470 471 if_attach(ifp); 472 ieee80211_ifattach(ic); 473 474 /* override state transition machine */ 475 sc->sc_newstate = ic->ic_newstate; 476 ic->ic_newstate = ural_newstate; 477 ieee80211_media_init(ic, ural_media_change, ieee80211_media_status); 478 479 #if NBPFILTER > 0 480 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 481 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf); 482 483 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 484 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 485 sc->sc_rxtap.wr_ihdr.it_present = htole32(RAL_RX_RADIOTAP_PRESENT); 486 487 sc->sc_txtap_len = sizeof sc->sc_txtapu; 488 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 489 sc->sc_txtap.wt_ihdr.it_present = htole32(RAL_TX_RADIOTAP_PRESENT); 490 #endif 491 492 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 493 USBDEV(sc->sc_dev)); 494 495 USB_ATTACH_SUCCESS_RETURN; 496 } 497 498 USB_DETACH(ural) 499 { 500 USB_DETACH_START(ural, sc); 501 struct ieee80211com *ic = &sc->sc_ic; 502 struct ifnet *ifp = &sc->sc_if; 503 int s; 504 505 s = splusb(); 506 507 usb_rem_task(sc->sc_udev, &sc->sc_task); 508 callout_stop(&sc->scan_ch); 509 510 if (sc->sc_rx_pipeh != NULL) { 511 usbd_abort_pipe(sc->sc_rx_pipeh); 512 usbd_close_pipe(sc->sc_rx_pipeh); 513 } 514 515 if (sc->sc_tx_pipeh != NULL) { 516 usbd_abort_pipe(sc->sc_tx_pipeh); 517 usbd_close_pipe(sc->sc_tx_pipeh); 518 } 519 520 ural_free_rx_list(sc); 521 ural_free_tx_list(sc); 522 523 #if NBPFILTER > 0 524 bpfdetach(ifp); 525 #endif 526 ieee80211_ifdetach(ic); 527 if_detach(ifp); 528 529 splx(s); 530 531 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 532 USBDEV(sc->sc_dev)); 533 534 return 0; 535 } 536 537 Static int 538 ural_alloc_tx_list(struct ural_softc *sc) 539 { 540 struct ural_tx_data *data; 541 int i, error; 542 543 sc->tx_queued = 0; 544 545 for (i = 0; i < RAL_TX_LIST_COUNT; i++) { 546 data = &sc->tx_data[i]; 547 548 data->sc = sc; 549 550 data->xfer = usbd_alloc_xfer(sc->sc_udev); 551 if (data->xfer == NULL) { 552 printf("%s: could not allocate tx xfer\n", 553 USBDEVNAME(sc->sc_dev)); 554 error = ENOMEM; 555 goto fail; 556 } 557 558 data->buf = usbd_alloc_buffer(data->xfer, 559 RAL_TX_DESC_SIZE + MCLBYTES); 560 if (data->buf == NULL) { 561 printf("%s: could not allocate tx buffer\n", 562 USBDEVNAME(sc->sc_dev)); 563 error = ENOMEM; 564 goto fail; 565 } 566 } 567 568 return 0; 569 570 fail: ural_free_tx_list(sc); 571 return error; 572 } 573 574 Static void 575 ural_free_tx_list(struct ural_softc *sc) 576 { 577 struct ural_tx_data *data; 578 int i; 579 580 for (i = 0; i < RAL_TX_LIST_COUNT; i++) { 581 data = &sc->tx_data[i]; 582 583 if (data->xfer != NULL) { 584 usbd_free_xfer(data->xfer); 585 data->xfer = NULL; 586 } 587 588 if (data->ni != NULL) { 589 ieee80211_free_node(data->ni); 590 data->ni = NULL; 591 } 592 } 593 } 594 595 Static int 596 ural_alloc_rx_list(struct ural_softc *sc) 597 { 598 struct ural_rx_data *data; 599 int i, error; 600 601 for (i = 0; i < RAL_RX_LIST_COUNT; i++) { 602 data = &sc->rx_data[i]; 603 604 data->sc = sc; 605 606 data->xfer = usbd_alloc_xfer(sc->sc_udev); 607 if (data->xfer == NULL) { 608 printf("%s: could not allocate rx xfer\n", 609 USBDEVNAME(sc->sc_dev)); 610 error = ENOMEM; 611 goto fail; 612 } 613 614 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 615 printf("%s: could not allocate rx buffer\n", 616 USBDEVNAME(sc->sc_dev)); 617 error = ENOMEM; 618 goto fail; 619 } 620 621 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 622 if (data->m == NULL) { 623 printf("%s: could not allocate rx mbuf\n", 624 USBDEVNAME(sc->sc_dev)); 625 error = ENOMEM; 626 goto fail; 627 } 628 629 MCLGET(data->m, M_DONTWAIT); 630 if (!(data->m->m_flags & M_EXT)) { 631 printf("%s: could not allocate rx mbuf cluster\n", 632 USBDEVNAME(sc->sc_dev)); 633 error = ENOMEM; 634 goto fail; 635 } 636 637 data->buf = mtod(data->m, uint8_t *); 638 } 639 640 return 0; 641 642 fail: ural_free_tx_list(sc); 643 return error; 644 } 645 646 Static void 647 ural_free_rx_list(struct ural_softc *sc) 648 { 649 struct ural_rx_data *data; 650 int i; 651 652 for (i = 0; i < RAL_RX_LIST_COUNT; i++) { 653 data = &sc->rx_data[i]; 654 655 if (data->xfer != NULL) { 656 usbd_free_xfer(data->xfer); 657 data->xfer = NULL; 658 } 659 660 if (data->m != NULL) { 661 m_freem(data->m); 662 data->m = NULL; 663 } 664 } 665 } 666 667 Static int 668 ural_media_change(struct ifnet *ifp) 669 { 670 int error; 671 672 error = ieee80211_media_change(ifp); 673 if (error != ENETRESET) 674 return error; 675 676 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 677 ural_init(ifp); 678 679 return 0; 680 } 681 682 /* 683 * This function is called periodically (every 200ms) during scanning to 684 * switch from one channel to another. 685 */ 686 Static void 687 ural_next_scan(void *arg) 688 { 689 struct ural_softc *sc = arg; 690 struct ieee80211com *ic = &sc->sc_ic; 691 692 if (ic->ic_state == IEEE80211_S_SCAN) 693 ieee80211_next_scan(ic); 694 } 695 696 Static void 697 ural_task(void *arg) 698 { 699 struct ural_softc *sc = arg; 700 struct ieee80211com *ic = &sc->sc_ic; 701 enum ieee80211_state ostate; 702 struct mbuf *m; 703 704 ostate = ic->ic_state; 705 706 switch (sc->sc_state) { 707 case IEEE80211_S_INIT: 708 if (ostate == IEEE80211_S_RUN) { 709 /* abort TSF synchronization */ 710 ural_write(sc, RAL_TXRX_CSR19, 0); 711 712 /* force tx led to stop blinking */ 713 ural_write(sc, RAL_MAC_CSR20, 0); 714 } 715 break; 716 717 case IEEE80211_S_SCAN: 718 ural_set_chan(sc, ic->ic_bss->ni_chan); 719 callout_reset(&sc->scan_ch, hz / 5, ural_next_scan, sc); 720 break; 721 722 case IEEE80211_S_AUTH: 723 ural_set_chan(sc, ic->ic_bss->ni_chan); 724 break; 725 726 case IEEE80211_S_ASSOC: 727 ural_set_chan(sc, ic->ic_bss->ni_chan); 728 break; 729 730 case IEEE80211_S_RUN: 731 ural_set_chan(sc, ic->ic_bss->ni_chan); 732 733 if (ic->ic_opmode != IEEE80211_M_MONITOR) 734 ural_set_bssid(sc, ic->ic_bss->ni_bssid); 735 736 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 737 ic->ic_opmode == IEEE80211_M_IBSS) { 738 m = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 739 if (m == NULL) { 740 printf("%s: could not allocate beacon\n", 741 USBDEVNAME(sc->sc_dev)); 742 return; 743 } 744 745 if (ural_tx_bcn(sc, m, ic->ic_bss) != 0) { 746 m_freem(m); 747 printf("%s: could not transmit beacon\n", 748 USBDEVNAME(sc->sc_dev)); 749 return; 750 } 751 752 /* beacon is no longer needed */ 753 m_freem(m); 754 } 755 756 /* make tx led blink on tx (controlled by ASIC) */ 757 ural_write(sc, RAL_MAC_CSR20, 1); 758 759 if (ic->ic_opmode != IEEE80211_M_MONITOR) 760 ural_enable_tsf_sync(sc); 761 break; 762 } 763 764 sc->sc_newstate(ic, sc->sc_state, -1); 765 } 766 767 Static int 768 ural_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 769 { 770 struct ural_softc *sc = ic->ic_ifp->if_softc; 771 772 usb_rem_task(sc->sc_udev, &sc->sc_task); 773 callout_stop(&sc->scan_ch); 774 775 /* do it in a process context */ 776 sc->sc_state = nstate; 777 usb_add_task(sc->sc_udev, &sc->sc_task); 778 779 return 0; 780 } 781 782 /* quickly determine if a given rate is CCK or OFDM */ 783 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 784 785 #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */ 786 #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */ 787 #define RAL_SIFS 10 788 789 Static void 790 ural_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 791 { 792 struct ural_tx_data *data = priv; 793 struct ural_softc *sc = data->sc; 794 struct ifnet *ifp = &sc->sc_if; 795 int s; 796 797 if (status != USBD_NORMAL_COMPLETION) { 798 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 799 return; 800 801 printf("%s: could not transmit buffer: %s\n", 802 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 803 804 if (status == USBD_STALLED) 805 usbd_clear_endpoint_stall(sc->sc_tx_pipeh); 806 807 ifp->if_oerrors++; 808 return; 809 } 810 811 s = splnet(); 812 813 m_freem(data->m); 814 data->m = NULL; 815 ieee80211_free_node(data->ni); 816 data->ni = NULL; 817 818 sc->tx_queued--; 819 ifp->if_opackets++; 820 821 DPRINTFN(10, ("tx done\n")); 822 823 sc->sc_tx_timer = 0; 824 ifp->if_flags &= ~IFF_OACTIVE; 825 ural_start(ifp); 826 827 splx(s); 828 } 829 830 Static void 831 ural_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 832 { 833 struct ural_rx_data *data = priv; 834 struct ural_softc *sc = data->sc; 835 struct ieee80211com *ic = &sc->sc_ic; 836 struct ifnet *ifp = &sc->sc_if; 837 struct ural_rx_desc *desc; 838 struct ieee80211_frame_min *wh; 839 struct ieee80211_node *ni; 840 struct mbuf *m; 841 int s, len; 842 843 if (status != USBD_NORMAL_COMPLETION) { 844 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 845 return; 846 847 if (status == USBD_STALLED) 848 usbd_clear_endpoint_stall(sc->sc_rx_pipeh); 849 goto skip; 850 } 851 852 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 853 854 if (len < RAL_RX_DESC_SIZE) { 855 printf("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), len); 856 ifp->if_ierrors++; 857 goto skip; 858 } 859 860 /* rx descriptor is located at the end */ 861 desc = (struct ural_rx_desc *)(data->buf + len - RAL_RX_DESC_SIZE); 862 863 if (le32toh(desc->flags) & (RAL_RX_PHY_ERROR | RAL_RX_CRC_ERROR)) { 864 /* 865 * This should not happen since we did not request to receive 866 * those frames when we filled RAL_TXRX_CSR2. 867 */ 868 DPRINTFN(5, ("PHY or CRC error\n")); 869 ifp->if_ierrors++; 870 goto skip; 871 } 872 873 /* finalize mbuf */ 874 m = data->m; 875 m->m_pkthdr.rcvif = ifp; 876 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 877 m->m_flags |= M_HASFCS; /* hardware appends FCS */ 878 879 s = splnet(); 880 881 #if NBPFILTER > 0 882 if (sc->sc_drvbpf != NULL) { 883 struct ural_rx_radiotap_header *tap = &sc->sc_rxtap; 884 885 tap->wr_flags = 0; 886 tap->wr_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 887 tap->wr_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 888 tap->wr_antenna = sc->rx_ant; 889 tap->wr_antsignal = desc->rssi; 890 891 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 892 } 893 #endif 894 895 wh = mtod(m, struct ieee80211_frame_min *); 896 ni = ieee80211_find_rxnode(ic, wh); 897 898 /* send the frame to the 802.11 layer */ 899 ieee80211_input(ic, m, ni, desc->rssi, 0); 900 901 /* node is no longer needed */ 902 ieee80211_free_node(ni); 903 904 splx(s); 905 906 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 907 if (data->m == NULL) { 908 printf("%s: could not allocate rx mbuf\n", 909 USBDEVNAME(sc->sc_dev)); 910 return; 911 } 912 913 MCLGET(data->m, M_DONTWAIT); 914 if (!(data->m->m_flags & M_EXT)) { 915 printf("%s: could not allocate rx mbuf cluster\n", 916 USBDEVNAME(sc->sc_dev)); 917 m_freem(data->m); 918 data->m = NULL; 919 return; 920 } 921 922 data->buf = mtod(data->m, uint8_t *); 923 924 DPRINTFN(15, ("rx done\n")); 925 926 skip: /* setup a new transfer */ 927 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 928 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, ural_rxeof); 929 usbd_transfer(xfer); 930 } 931 932 /* 933 * Return the expected ack rate for a frame transmitted at rate `rate'. 934 * XXX: this should depend on the destination node basic rate set. 935 */ 936 Static int 937 ural_ack_rate(int rate) 938 { 939 switch (rate) { 940 /* CCK rates */ 941 case 2: 942 return 2; 943 case 4: 944 case 11: 945 case 22: 946 return 4; 947 948 /* OFDM rates */ 949 case 12: 950 case 18: 951 return 12; 952 case 24: 953 case 36: 954 return 24; 955 case 48: 956 case 72: 957 case 96: 958 case 108: 959 return 48; 960 } 961 962 /* default to 1Mbps */ 963 return 2; 964 } 965 966 /* 967 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 968 * The function automatically determines the operating mode depending on the 969 * given rate. `flags' indicates whether short preamble is in use or not. 970 */ 971 Static uint16_t 972 ural_txtime(int len, int rate, uint32_t flags) 973 { 974 uint16_t txtime; 975 int ceil, dbps; 976 977 if (RAL_RATE_IS_OFDM(rate)) { 978 /* 979 * OFDM TXTIME calculation. 980 * From IEEE Std 802.11a-1999, pp. 37. 981 */ 982 dbps = rate * 2; /* data bits per OFDM symbol */ 983 984 ceil = (16 + 8 * len + 6) / dbps; 985 if ((16 + 8 * len + 6) % dbps != 0) 986 ceil++; 987 988 txtime = 16 + 4 + 4 * ceil + 6; 989 } else { 990 /* 991 * High Rate TXTIME calculation. 992 * From IEEE Std 802.11b-1999, pp. 28. 993 */ 994 ceil = (8 * len * 2) / rate; 995 if ((8 * len * 2) % rate != 0) 996 ceil++; 997 998 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 999 txtime = 72 + 24 + ceil; 1000 else 1001 txtime = 144 + 48 + ceil; 1002 } 1003 1004 return txtime; 1005 } 1006 1007 Static uint8_t 1008 ural_plcp_signal(int rate) 1009 { 1010 switch (rate) { 1011 /* CCK rates (returned values are device-dependent) */ 1012 case 2: return 0x0; 1013 case 4: return 0x1; 1014 case 11: return 0x2; 1015 case 22: return 0x3; 1016 1017 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1018 case 12: return 0xb; 1019 case 18: return 0xf; 1020 case 24: return 0xa; 1021 case 36: return 0xe; 1022 case 48: return 0x9; 1023 case 72: return 0xd; 1024 case 96: return 0x8; 1025 case 108: return 0xc; 1026 1027 /* unsupported rates (should not get there) */ 1028 default: return 0xff; 1029 } 1030 } 1031 1032 Static void 1033 ural_setup_tx_desc(struct ural_softc *sc, struct ural_tx_desc *desc, 1034 uint32_t flags, int len, int rate) 1035 { 1036 struct ieee80211com *ic = &sc->sc_ic; 1037 uint16_t plcp_length; 1038 int remainder; 1039 1040 desc->flags = htole32(flags); 1041 desc->flags |= htole32(RAL_TX_NEWSEQ); 1042 desc->flags |= htole32(len << 16); 1043 1044 if (RAL_RATE_IS_OFDM(rate)) 1045 desc->flags |= htole32(RAL_TX_OFDM); 1046 1047 desc->wme = htole16(RAL_LOGCWMAX(5) | RAL_LOGCWMIN(3) | RAL_AIFSN(2)); 1048 1049 /* 1050 * Fill PLCP fields. 1051 */ 1052 desc->plcp_service = 4; 1053 1054 len += 4; /* account for FCS */ 1055 if (RAL_RATE_IS_OFDM(rate)) { 1056 /* 1057 * PLCP length field (LENGTH). 1058 * From IEEE Std 802.11a-1999, pp. 14. 1059 */ 1060 plcp_length = len & 0xfff; 1061 desc->plcp_length = htole16((plcp_length >> 6) << 8 | 1062 (plcp_length & 0x3f)); 1063 } else { 1064 /* 1065 * Long PLCP LENGTH field. 1066 * From IEEE Std 802.11b-1999, pp. 16. 1067 */ 1068 plcp_length = (8 * len * 2) / rate; 1069 remainder = (8 * len * 2) % rate; 1070 if (remainder != 0) { 1071 if (rate == 22 && (rate - remainder) / 16 != 0) 1072 desc->plcp_service |= RAL_PLCP_LENGEXT; 1073 plcp_length++; 1074 } 1075 desc->plcp_length = htole16(plcp_length); 1076 } 1077 1078 desc->plcp_signal = ural_plcp_signal(rate); 1079 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1080 desc->plcp_signal |= 0x08; 1081 1082 desc->iv = 0; 1083 desc->eiv = 0; 1084 } 1085 1086 #define RAL_TX_TIMEOUT 5000 1087 1088 Static int 1089 ural_tx_bcn(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1090 { 1091 struct ural_tx_desc *desc; 1092 usbd_xfer_handle xfer; 1093 usbd_status error; 1094 uint8_t cmd = 0; 1095 uint8_t *buf; 1096 int xferlen, rate; 1097 1098 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 4; 1099 1100 xfer = usbd_alloc_xfer(sc->sc_udev); 1101 if (xfer == NULL) 1102 return ENOMEM; 1103 1104 /* xfer length needs to be a multiple of two! */ 1105 xferlen = (RAL_TX_DESC_SIZE + m0->m_pkthdr.len + 1) & ~1; 1106 1107 buf = usbd_alloc_buffer(xfer, xferlen); 1108 if (buf == NULL) { 1109 usbd_free_xfer(xfer); 1110 return ENOMEM; 1111 } 1112 1113 usbd_setup_xfer(xfer, sc->sc_tx_pipeh, NULL, &cmd, sizeof cmd, 1114 USBD_FORCE_SHORT_XFER, RAL_TX_TIMEOUT, NULL); 1115 1116 error = usbd_sync_transfer(xfer); 1117 if (error != 0) { 1118 usbd_free_xfer(xfer); 1119 return error; 1120 } 1121 1122 desc = (struct ural_tx_desc *)buf; 1123 1124 m_copydata(m0, 0, m0->m_pkthdr.len, buf + RAL_TX_DESC_SIZE); 1125 ural_setup_tx_desc(sc, desc, RAL_TX_IFS_NEWBACKOFF | RAL_TX_TIMESTAMP, 1126 m0->m_pkthdr.len, rate); 1127 1128 DPRINTFN(10, ("sending beacon frame len=%u rate=%u xfer len=%u\n", 1129 m0->m_pkthdr.len, rate, xferlen)); 1130 1131 usbd_setup_xfer(xfer, sc->sc_tx_pipeh, NULL, buf, xferlen, 1132 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RAL_TX_TIMEOUT, NULL); 1133 1134 error = usbd_sync_transfer(xfer); 1135 usbd_free_xfer(xfer); 1136 1137 return error; 1138 } 1139 1140 Static int 1141 ural_tx_mgt(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1142 { 1143 struct ieee80211com *ic = &sc->sc_ic; 1144 struct ural_tx_desc *desc; 1145 struct ural_tx_data *data; 1146 struct ieee80211_frame *wh; 1147 uint32_t flags = 0; 1148 uint16_t dur; 1149 usbd_status error; 1150 int xferlen, rate; 1151 1152 data = &sc->tx_data[0]; 1153 desc = (struct ural_tx_desc *)data->buf; 1154 1155 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 4; 1156 1157 #if NBPFILTER > 0 1158 if (sc->sc_drvbpf != NULL) { 1159 struct ural_tx_radiotap_header *tap = &sc->sc_txtap; 1160 1161 tap->wt_flags = 0; 1162 tap->wt_rate = rate; 1163 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1164 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1165 tap->wt_antenna = sc->tx_ant; 1166 1167 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1168 } 1169 #endif 1170 1171 data->m = m0; 1172 data->ni = ni; 1173 1174 wh = mtod(m0, struct ieee80211_frame *); 1175 1176 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1177 flags |= RAL_TX_ACK; 1178 1179 dur = ural_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) + RAL_SIFS; 1180 *(uint16_t *)wh->i_dur = htole16(dur); 1181 1182 /* tell hardware to add timestamp for probe responses */ 1183 if ((wh->i_fc[0] & 1184 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1185 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1186 flags |= RAL_TX_TIMESTAMP; 1187 } 1188 1189 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RAL_TX_DESC_SIZE); 1190 ural_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate); 1191 1192 /* xfer length needs to be a multiple of two! */ 1193 xferlen = (RAL_TX_DESC_SIZE + m0->m_pkthdr.len + 1) & ~1; 1194 1195 DPRINTFN(10, ("sending mgt frame len=%u rate=%u xfer len=%u\n", 1196 m0->m_pkthdr.len, rate, xferlen)); 1197 1198 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1199 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RAL_TX_TIMEOUT, ural_txeof); 1200 1201 error = usbd_transfer(data->xfer); 1202 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1203 m_freem(m0); 1204 return error; 1205 } 1206 1207 sc->tx_queued++; 1208 1209 return 0; 1210 } 1211 1212 Static int 1213 ural_tx_data(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1214 { 1215 struct ieee80211com *ic = &sc->sc_ic; 1216 struct ieee80211_rateset *rs; 1217 struct ural_tx_desc *desc; 1218 struct ural_tx_data *data; 1219 struct ieee80211_frame *wh; 1220 struct ieee80211_key *k; 1221 uint32_t flags = 0; 1222 uint16_t dur; 1223 usbd_status error; 1224 int xferlen, rate; 1225 1226 wh = mtod(m0, struct ieee80211_frame *); 1227 1228 /* XXX this should be reworked! */ 1229 if (ic->ic_fixed_rate != -1) { 1230 if (ic->ic_curmode != IEEE80211_MODE_AUTO) 1231 rs = &ic->ic_sup_rates[ic->ic_curmode]; 1232 else 1233 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 1234 1235 rate = rs->rs_rates[ic->ic_fixed_rate]; 1236 } else { 1237 rs = &ni->ni_rates; 1238 rate = rs->rs_rates[ni->ni_txrate]; 1239 } 1240 rate &= IEEE80211_RATE_VAL; 1241 1242 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1243 k = ieee80211_crypto_encap(ic, ni, m0); 1244 if (k == NULL) 1245 return ENOBUFS; 1246 1247 /* packet header may have moved, reset our local pointer */ 1248 wh = mtod(m0, struct ieee80211_frame *); 1249 } 1250 1251 #if NBPFILTER > 0 1252 if (sc->sc_drvbpf != NULL) { 1253 struct ural_tx_radiotap_header *tap = &sc->sc_txtap; 1254 1255 tap->wt_flags = 0; 1256 tap->wt_rate = rate; 1257 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1258 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1259 tap->wt_antenna = sc->tx_ant; 1260 1261 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1262 } 1263 #endif 1264 1265 data = &sc->tx_data[0]; 1266 desc = (struct ural_tx_desc *)data->buf; 1267 1268 data->m = m0; 1269 data->ni = ni; 1270 1271 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1272 flags |= RAL_TX_ACK; 1273 flags |= RAL_TX_RETRY(7); 1274 1275 dur = ural_txtime(RAL_ACK_SIZE, ural_ack_rate(rate), 1276 ic->ic_flags) + RAL_SIFS; 1277 *(uint16_t *)wh->i_dur = htole16(dur); 1278 } 1279 1280 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RAL_TX_DESC_SIZE); 1281 ural_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate); 1282 1283 /* xfer length needs to be a multiple of two! */ 1284 xferlen = (RAL_TX_DESC_SIZE + m0->m_pkthdr.len + 1) & ~1; 1285 1286 DPRINTFN(10, ("sending data frame len=%u rate=%u xfer len=%u\n", 1287 m0->m_pkthdr.len, rate, xferlen)); 1288 1289 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1290 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RAL_TX_TIMEOUT, ural_txeof); 1291 1292 error = usbd_transfer(data->xfer); 1293 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1294 m_freem(m0); 1295 return error; 1296 } 1297 1298 sc->tx_queued++; 1299 1300 return 0; 1301 } 1302 1303 Static void 1304 ural_start(struct ifnet *ifp) 1305 { 1306 struct ural_softc *sc = ifp->if_softc; 1307 struct ieee80211com *ic = &sc->sc_ic; 1308 struct ether_header *eh; 1309 struct ieee80211_node *ni; 1310 struct mbuf *m0; 1311 1312 for (;;) { 1313 IF_POLL(&ic->ic_mgtq, m0); 1314 if (m0 != NULL) { 1315 if (sc->tx_queued >= RAL_TX_LIST_COUNT) { 1316 ifp->if_flags |= IFF_OACTIVE; 1317 break; 1318 } 1319 IF_DEQUEUE(&ic->ic_mgtq, m0); 1320 1321 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1322 m0->m_pkthdr.rcvif = NULL; 1323 #if NBPFILTER > 0 1324 if (ic->ic_rawbpf != NULL) 1325 bpf_mtap(ic->ic_rawbpf, m0); 1326 #endif 1327 if (ural_tx_mgt(sc, m0, ni) != 0) 1328 break; 1329 1330 } else { 1331 if (ic->ic_state != IEEE80211_S_RUN) 1332 break; 1333 IFQ_DEQUEUE(&ifp->if_snd, m0); 1334 if (m0 == NULL) 1335 break; 1336 if (sc->tx_queued >= RAL_TX_LIST_COUNT) { 1337 IF_PREPEND(&ifp->if_snd, m0); 1338 ifp->if_flags |= IFF_OACTIVE; 1339 break; 1340 } 1341 1342 if (m0->m_len < sizeof (struct ether_header) && 1343 !(m0 = m_pullup(m0, sizeof (struct ether_header)))) 1344 continue; 1345 1346 eh = mtod(m0, struct ether_header *); 1347 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1348 if (ni == NULL) { 1349 m_freem(m0); 1350 continue; 1351 } 1352 #if NBPFILTER > 0 1353 if (ifp->if_bpf != NULL) 1354 bpf_mtap(ifp->if_bpf, m0); 1355 #endif 1356 m0 = ieee80211_encap(ic, m0, ni); 1357 if (m0 == NULL) 1358 continue; 1359 #if NBPFILTER > 0 1360 if (ic->ic_rawbpf != NULL) 1361 bpf_mtap(ic->ic_rawbpf, m0); 1362 #endif 1363 if (ural_tx_data(sc, m0, ni) != 0) { 1364 ieee80211_free_node(ni); 1365 ifp->if_oerrors++; 1366 break; 1367 } 1368 } 1369 1370 sc->sc_tx_timer = 5; 1371 ifp->if_timer = 1; 1372 } 1373 } 1374 1375 Static void 1376 ural_watchdog(struct ifnet *ifp) 1377 { 1378 struct ural_softc *sc = ifp->if_softc; 1379 struct ieee80211com *ic = &sc->sc_ic; 1380 1381 ifp->if_timer = 0; 1382 1383 if (sc->sc_tx_timer > 0) { 1384 if (--sc->sc_tx_timer == 0) { 1385 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1386 /*ural_init(ifp); XXX needs a process context! */ 1387 ifp->if_oerrors++; 1388 return; 1389 } 1390 ifp->if_timer = 1; 1391 } 1392 1393 ieee80211_watchdog(ic); 1394 } 1395 1396 Static int 1397 ural_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1398 { 1399 struct ural_softc *sc = ifp->if_softc; 1400 struct ieee80211com *ic = &sc->sc_ic; 1401 struct ifreq *ifr; 1402 int s, error = 0; 1403 1404 s = splnet(); 1405 1406 switch (cmd) { 1407 case SIOCSIFFLAGS: 1408 if (ifp->if_flags & IFF_UP) { 1409 if (ifp->if_flags & IFF_RUNNING) 1410 ural_update_promisc(sc); 1411 else 1412 ural_init(ifp); 1413 } else { 1414 if (ifp->if_flags & IFF_RUNNING) 1415 ural_stop(ifp, 1); 1416 } 1417 break; 1418 1419 case SIOCADDMULTI: 1420 case SIOCDELMULTI: 1421 ifr = (struct ifreq *)data; 1422 error = (cmd == SIOCADDMULTI) ? 1423 ether_addmulti(ifr, &sc->sc_ec) : 1424 ether_delmulti(ifr, &sc->sc_ec); 1425 1426 if (error == ENETRESET) 1427 error = 0; 1428 break; 1429 1430 case SIOCS80211CHANNEL: 1431 /* 1432 * This allows for fast channel switching in monitor mode 1433 * (used by kismet). In IBSS mode, we must explicitly reset 1434 * the interface to generate a new beacon frame. 1435 */ 1436 error = ieee80211_ioctl(ic, cmd, data); 1437 if (error == ENETRESET && 1438 ic->ic_opmode == IEEE80211_M_MONITOR) { 1439 ural_set_chan(sc, ic->ic_ibss_chan); 1440 error = 0; 1441 } 1442 break; 1443 1444 default: 1445 error = ieee80211_ioctl(ic, cmd, data); 1446 } 1447 1448 if (error == ENETRESET) { 1449 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1450 (IFF_UP | IFF_RUNNING)) 1451 ural_init(ifp); 1452 error = 0; 1453 } 1454 1455 splx(s); 1456 1457 return error; 1458 } 1459 1460 Static void 1461 ural_eeprom_read(struct ural_softc *sc, uint16_t addr, void *buf, int len) 1462 { 1463 usb_device_request_t req; 1464 usbd_status error; 1465 1466 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1467 req.bRequest = RAL_READ_EEPROM; 1468 USETW(req.wValue, 0); 1469 USETW(req.wIndex, addr); 1470 USETW(req.wLength, len); 1471 1472 error = usbd_do_request(sc->sc_udev, &req, buf); 1473 if (error != 0) { 1474 printf("%s: could not read EEPROM: %s\n", 1475 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1476 } 1477 } 1478 1479 Static uint16_t 1480 ural_read(struct ural_softc *sc, uint16_t reg) 1481 { 1482 usb_device_request_t req; 1483 usbd_status error; 1484 uint16_t val; 1485 1486 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1487 req.bRequest = RAL_READ_MAC; 1488 USETW(req.wValue, 0); 1489 USETW(req.wIndex, reg); 1490 USETW(req.wLength, sizeof (uint16_t)); 1491 1492 error = usbd_do_request(sc->sc_udev, &req, &val); 1493 if (error != 0) { 1494 printf("%s: could not read MAC register: %s\n", 1495 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1496 return 0; 1497 } 1498 1499 return le16toh(val); 1500 } 1501 1502 Static void 1503 ural_read_multi(struct ural_softc *sc, uint16_t reg, void *buf, int len) 1504 { 1505 usb_device_request_t req; 1506 usbd_status error; 1507 1508 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1509 req.bRequest = RAL_READ_MULTI_MAC; 1510 USETW(req.wValue, 0); 1511 USETW(req.wIndex, reg); 1512 USETW(req.wLength, len); 1513 1514 error = usbd_do_request(sc->sc_udev, &req, buf); 1515 if (error != 0) { 1516 printf("%s: could not read MAC register: %s\n", 1517 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1518 return; 1519 } 1520 } 1521 1522 Static void 1523 ural_write(struct ural_softc *sc, uint16_t reg, uint16_t val) 1524 { 1525 usb_device_request_t req; 1526 usbd_status error; 1527 1528 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1529 req.bRequest = RAL_WRITE_MAC; 1530 USETW(req.wValue, val); 1531 USETW(req.wIndex, reg); 1532 USETW(req.wLength, 0); 1533 1534 error = usbd_do_request(sc->sc_udev, &req, NULL); 1535 if (error != 0) { 1536 printf("%s: could not write MAC register: %s\n", 1537 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1538 } 1539 } 1540 1541 Static void 1542 ural_write_multi(struct ural_softc *sc, uint16_t reg, void *buf, int len) 1543 { 1544 usb_device_request_t req; 1545 usbd_status error; 1546 1547 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1548 req.bRequest = RAL_WRITE_MULTI_MAC; 1549 USETW(req.wValue, 0); 1550 USETW(req.wIndex, reg); 1551 USETW(req.wLength, len); 1552 1553 error = usbd_do_request(sc->sc_udev, &req, buf); 1554 if (error != 0) { 1555 printf("%s: could not write MAC register: %s\n", 1556 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1557 } 1558 } 1559 1560 Static void 1561 ural_bbp_write(struct ural_softc *sc, uint8_t reg, uint8_t val) 1562 { 1563 uint16_t tmp; 1564 int ntries; 1565 1566 for (ntries = 0; ntries < 5; ntries++) { 1567 if (!(ural_read(sc, RAL_PHY_CSR8) & RAL_BBP_BUSY)) 1568 break; 1569 } 1570 if (ntries == 5) { 1571 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1572 return; 1573 } 1574 1575 tmp = reg << 8 | val; 1576 ural_write(sc, RAL_PHY_CSR7, tmp); 1577 } 1578 1579 Static uint8_t 1580 ural_bbp_read(struct ural_softc *sc, uint8_t reg) 1581 { 1582 uint16_t val; 1583 int ntries; 1584 1585 val = RAL_BBP_WRITE | reg << 8; 1586 ural_write(sc, RAL_PHY_CSR7, val); 1587 1588 for (ntries = 0; ntries < 5; ntries++) { 1589 if (!(ural_read(sc, RAL_PHY_CSR8) & RAL_BBP_BUSY)) 1590 break; 1591 } 1592 if (ntries == 5) { 1593 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1594 return 0; 1595 } 1596 1597 return ural_read(sc, RAL_PHY_CSR7) & 0xff; 1598 } 1599 1600 Static void 1601 ural_rf_write(struct ural_softc *sc, uint8_t reg, uint32_t val) 1602 { 1603 uint32_t tmp; 1604 int ntries; 1605 1606 for (ntries = 0; ntries < 5; ntries++) { 1607 if (!(ural_read(sc, RAL_PHY_CSR10) & RAL_RF_LOBUSY)) 1608 break; 1609 } 1610 if (ntries == 5) { 1611 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1612 return; 1613 } 1614 1615 tmp = RAL_RF_BUSY | RAL_RF_20BIT | (val & 0xfffff) << 2 | (reg & 0x3); 1616 ural_write(sc, RAL_PHY_CSR9, tmp & 0xffff); 1617 ural_write(sc, RAL_PHY_CSR10, tmp >> 16); 1618 1619 /* remember last written value in sc */ 1620 sc->rf_regs[reg] = val; 1621 1622 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff)); 1623 } 1624 1625 Static void 1626 ural_set_chan(struct ural_softc *sc, struct ieee80211_channel *c) 1627 { 1628 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1629 struct ieee80211com *ic = &sc->sc_ic; 1630 uint8_t power, tmp; 1631 u_int i, chan; 1632 1633 chan = ieee80211_chan2ieee(ic, c); 1634 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1635 return; 1636 1637 if (IEEE80211_IS_CHAN_2GHZ(c)) 1638 power = min(sc->txpow[chan - 1], 31); 1639 else 1640 power = 31; 1641 1642 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power)); 1643 1644 switch (sc->rf_rev) { 1645 case RAL_RF_2522: 1646 ural_rf_write(sc, RAL_RF1, 0x00814); 1647 ural_rf_write(sc, RAL_RF2, ural_rf2522_r2[chan - 1]); 1648 ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 1649 break; 1650 1651 case RAL_RF_2523: 1652 ural_rf_write(sc, RAL_RF1, 0x08804); 1653 ural_rf_write(sc, RAL_RF2, ural_rf2523_r2[chan - 1]); 1654 ural_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 1655 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1656 break; 1657 1658 case RAL_RF_2524: 1659 ural_rf_write(sc, RAL_RF1, 0x0c808); 1660 ural_rf_write(sc, RAL_RF2, ural_rf2524_r2[chan - 1]); 1661 ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 1662 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1663 break; 1664 1665 case RAL_RF_2525: 1666 ural_rf_write(sc, RAL_RF1, 0x08808); 1667 ural_rf_write(sc, RAL_RF2, ural_rf2525_hi_r2[chan - 1]); 1668 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1669 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1670 1671 ural_rf_write(sc, RAL_RF1, 0x08808); 1672 ural_rf_write(sc, RAL_RF2, ural_rf2525_r2[chan - 1]); 1673 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1674 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1675 break; 1676 1677 case RAL_RF_2525E: 1678 ural_rf_write(sc, RAL_RF1, 0x08808); 1679 ural_rf_write(sc, RAL_RF2, ural_rf2525e_r2[chan - 1]); 1680 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1681 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 1682 break; 1683 1684 case RAL_RF_2526: 1685 ural_rf_write(sc, RAL_RF2, ural_rf2526_hi_r2[chan - 1]); 1686 ural_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 1687 ural_rf_write(sc, RAL_RF1, 0x08804); 1688 1689 ural_rf_write(sc, RAL_RF2, ural_rf2526_r2[chan - 1]); 1690 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1691 ural_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 1692 break; 1693 1694 /* dual-band RF */ 1695 case RAL_RF_5222: 1696 for (i = 0; i < N(ural_rf5222); i++) 1697 if (ural_rf5222[i].chan == chan) 1698 break; 1699 1700 if (i < N(ural_rf5222)) { 1701 ural_rf_write(sc, RAL_RF1, ural_rf5222[i].r1); 1702 ural_rf_write(sc, RAL_RF2, ural_rf5222[i].r2); 1703 ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 1704 ural_rf_write(sc, RAL_RF4, ural_rf5222[i].r4); 1705 } 1706 break; 1707 } 1708 1709 if (ic->ic_opmode != IEEE80211_M_MONITOR && 1710 ic->ic_state != IEEE80211_S_SCAN) { 1711 /* set Japan filter bit for channel 14 */ 1712 tmp = ural_bbp_read(sc, 70); 1713 1714 tmp &= ~RAL_JAPAN_FILTER; 1715 if (chan == 14) 1716 tmp |= RAL_JAPAN_FILTER; 1717 1718 ural_bbp_write(sc, 70, tmp); 1719 1720 /* clear CRC errors */ 1721 ural_read(sc, RAL_STA_CSR0); 1722 1723 DELAY(1000); /* RF needs a 1ms delay here */ 1724 ural_disable_rf_tune(sc); 1725 } 1726 #undef N 1727 } 1728 1729 /* 1730 * Disable RF auto-tuning. 1731 */ 1732 Static void 1733 ural_disable_rf_tune(struct ural_softc *sc) 1734 { 1735 uint32_t tmp; 1736 1737 if (sc->rf_rev != RAL_RF_2523) { 1738 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 1739 ural_rf_write(sc, RAL_RF1, tmp); 1740 } 1741 1742 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 1743 ural_rf_write(sc, RAL_RF3, tmp); 1744 1745 DPRINTFN(2, ("disabling RF autotune\n")); 1746 } 1747 1748 /* 1749 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 1750 * synchronization. 1751 */ 1752 Static void 1753 ural_enable_tsf_sync(struct ural_softc *sc) 1754 { 1755 struct ieee80211com *ic = &sc->sc_ic; 1756 uint16_t logcwmin, preload, tmp; 1757 1758 /* first, disable TSF synchronization */ 1759 ural_write(sc, RAL_TXRX_CSR19, 0); 1760 1761 tmp = (16 * ic->ic_bss->ni_intval) << 4; 1762 ural_write(sc, RAL_TXRX_CSR18, tmp); 1763 1764 logcwmin = (ic->ic_opmode == IEEE80211_M_IBSS) ? 2 : 0; 1765 preload = (ic->ic_opmode == IEEE80211_M_IBSS) ? 320 : 6; 1766 tmp = logcwmin << 12 | preload; 1767 ural_write(sc, RAL_TXRX_CSR20, tmp); 1768 1769 /* finally, enable TSF synchronization */ 1770 tmp = RAL_ENABLE_TSF | RAL_ENABLE_TBCN; 1771 if (ic->ic_opmode == IEEE80211_M_STA) 1772 tmp |= RAL_ENABLE_TSF_SYNC(1); 1773 else 1774 tmp |= RAL_ENABLE_TSF_SYNC(2) | RAL_ENABLE_BEACON_GENERATOR; 1775 ural_write(sc, RAL_TXRX_CSR19, tmp); 1776 1777 DPRINTF(("enabling TSF synchronization\n")); 1778 } 1779 1780 Static void 1781 ural_set_bssid(struct ural_softc *sc, uint8_t *bssid) 1782 { 1783 uint16_t tmp; 1784 1785 tmp = bssid[0] | bssid[1] << 8; 1786 ural_write(sc, RAL_MAC_CSR5, tmp); 1787 1788 tmp = bssid[2] | bssid[3] << 8; 1789 ural_write(sc, RAL_MAC_CSR6, tmp); 1790 1791 tmp = bssid[4] | bssid[5] << 8; 1792 ural_write(sc, RAL_MAC_CSR7, tmp); 1793 1794 DPRINTF(("setting BSSID to %s\n", ether_sprintf(bssid))); 1795 } 1796 1797 Static void 1798 ural_set_macaddr(struct ural_softc *sc, uint8_t *addr) 1799 { 1800 uint16_t tmp; 1801 1802 tmp = addr[0] | addr[1] << 8; 1803 ural_write(sc, RAL_MAC_CSR2, tmp); 1804 1805 tmp = addr[2] | addr[3] << 8; 1806 ural_write(sc, RAL_MAC_CSR3, tmp); 1807 1808 tmp = addr[4] | addr[5] << 8; 1809 ural_write(sc, RAL_MAC_CSR4, tmp); 1810 1811 DPRINTF(("setting MAC address to %s\n", ether_sprintf(addr))); 1812 } 1813 1814 Static void 1815 ural_update_promisc(struct ural_softc *sc) 1816 { 1817 struct ifnet *ifp = &sc->sc_if; 1818 uint16_t tmp; 1819 1820 tmp = ural_read(sc, RAL_TXRX_CSR2); 1821 1822 tmp &= ~RAL_DROP_NOT_TO_ME; 1823 if (!(ifp->if_flags & IFF_PROMISC)) 1824 tmp |= RAL_DROP_NOT_TO_ME; 1825 1826 ural_write(sc, RAL_TXRX_CSR2, tmp); 1827 1828 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1829 "entering" : "leaving")); 1830 } 1831 1832 Static const char * 1833 ural_get_rf(int rev) 1834 { 1835 switch (rev) { 1836 case RAL_RF_2522: return "RT2522"; 1837 case RAL_RF_2523: return "RT2523"; 1838 case RAL_RF_2524: return "RT2524"; 1839 case RAL_RF_2525: return "RT2525"; 1840 case RAL_RF_2525E: return "RT2525e"; 1841 case RAL_RF_2526: return "RT2526"; 1842 case RAL_RF_5222: return "RT5222"; 1843 default: return "unknown"; 1844 } 1845 } 1846 1847 Static void 1848 ural_read_eeprom(struct ural_softc *sc) 1849 { 1850 struct ieee80211com *ic = &sc->sc_ic; 1851 uint16_t val; 1852 1853 ural_eeprom_read(sc, RAL_EEPROM_CONFIG0, &val, 2); 1854 val = le16toh(val); 1855 sc->rf_rev = (val >> 11) & 0x7; 1856 sc->hw_radio = (val >> 10) & 0x1; 1857 sc->led_mode = (val >> 6) & 0x7; 1858 sc->rx_ant = (val >> 4) & 0x3; 1859 sc->tx_ant = (val >> 2) & 0x3; 1860 sc->nb_ant = val & 0x3; 1861 1862 /* read MAC address */ 1863 ural_eeprom_read(sc, RAL_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1864 1865 /* read default values for BBP registers */ 1866 ural_eeprom_read(sc, RAL_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1867 1868 /* read Tx power for all b/g channels */ 1869 ural_eeprom_read(sc, RAL_EEPROM_TXPOWER, sc->txpow, 14); 1870 } 1871 1872 Static int 1873 ural_bbp_init(struct ural_softc *sc) 1874 { 1875 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1876 int i, ntries; 1877 1878 /* wait for BBP to be ready */ 1879 for (ntries = 0; ntries < 100; ntries++) { 1880 if (ural_bbp_read(sc, RAL_BBP_VERSION) != 0) 1881 break; 1882 DELAY(1000); 1883 } 1884 if (ntries == 100) { 1885 printf("%s: timeout waiting for BBP\n", USBDEVNAME(sc->sc_dev)); 1886 return EIO; 1887 } 1888 1889 /* initialize BBP registers to default values */ 1890 for (i = 0; i < N(ural_def_bbp); i++) 1891 ural_bbp_write(sc, ural_def_bbp[i].reg, ural_def_bbp[i].val); 1892 1893 #if 0 1894 /* initialize BBP registers to values stored in EEPROM */ 1895 for (i = 0; i < 16; i++) { 1896 if (sc->bbp_prom[i].reg == 0xff) 1897 continue; 1898 ural_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1899 } 1900 #endif 1901 1902 return 0; 1903 #undef N 1904 } 1905 1906 Static void 1907 ural_set_txantenna(struct ural_softc *sc, int antenna) 1908 { 1909 uint16_t tmp; 1910 uint8_t tx; 1911 1912 tx = ural_bbp_read(sc, RAL_BBP_TX) & ~RAL_BBP_ANTMASK; 1913 if (antenna == 1) 1914 tx |= RAL_BBP_ANTA; 1915 else if (antenna == 2) 1916 tx |= RAL_BBP_ANTB; 1917 else 1918 tx |= RAL_BBP_DIVERSITY; 1919 1920 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 1921 if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526 || 1922 sc->rf_rev == RAL_RF_5222) 1923 tx |= RAL_BBP_FLIPIQ; 1924 1925 ural_bbp_write(sc, RAL_BBP_TX, tx); 1926 1927 /* update flags in PHY_CSR5 and PHY_CSR6 too */ 1928 tmp = ural_read(sc, RAL_PHY_CSR5) & ~0x7; 1929 ural_write(sc, RAL_PHY_CSR5, tmp | (tx & 0x7)); 1930 1931 tmp = ural_read(sc, RAL_PHY_CSR6) & ~0x7; 1932 ural_write(sc, RAL_PHY_CSR6, tmp | (tx & 0x7)); 1933 } 1934 1935 Static void 1936 ural_set_rxantenna(struct ural_softc *sc, int antenna) 1937 { 1938 uint8_t rx; 1939 1940 rx = ural_bbp_read(sc, RAL_BBP_RX) & ~RAL_BBP_ANTMASK; 1941 if (antenna == 1) 1942 rx |= RAL_BBP_ANTA; 1943 else if (antenna == 2) 1944 rx |= RAL_BBP_ANTB; 1945 else 1946 rx |= RAL_BBP_DIVERSITY; 1947 1948 /* need to force no I/Q flip for RF 2525e and 2526 */ 1949 if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526) 1950 rx &= ~RAL_BBP_FLIPIQ; 1951 1952 ural_bbp_write(sc, RAL_BBP_RX, rx); 1953 } 1954 1955 Static int 1956 ural_init(struct ifnet *ifp) 1957 { 1958 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1959 struct ural_softc *sc = ifp->if_softc; 1960 struct ieee80211com *ic = &sc->sc_ic; 1961 struct ieee80211_key *wk; 1962 struct ural_rx_data *data; 1963 uint16_t sta[11], tmp; 1964 usbd_status error; 1965 int i, ntries; 1966 1967 ural_stop(ifp, 0); 1968 1969 /* initialize MAC registers to default values */ 1970 for (i = 0; i < N(ural_def_mac); i++) 1971 ural_write(sc, ural_def_mac[i].reg, ural_def_mac[i].val); 1972 1973 /* wait for BBP and RF to wake up (this can take a long time!) */ 1974 for (ntries = 0; ntries < 100; ntries++) { 1975 tmp = ural_read(sc, RAL_MAC_CSR17); 1976 if ((tmp & (RAL_BBP_AWAKE | RAL_RF_AWAKE)) == 1977 (RAL_BBP_AWAKE | RAL_RF_AWAKE)) 1978 break; 1979 DELAY(1000); 1980 } 1981 if (ntries == 100) { 1982 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1983 USBDEVNAME(sc->sc_dev)); 1984 error = EIO; 1985 goto fail; 1986 } 1987 1988 /* we're ready! */ 1989 ural_write(sc, RAL_MAC_CSR1, RAL_HOST_READY); 1990 1991 /* set supported basic rates (1, 2, 6, 12, 24) */ 1992 ural_write(sc, RAL_TXRX_CSR11, 0x153); 1993 1994 error = ural_bbp_init(sc); 1995 if (error != 0) 1996 goto fail; 1997 1998 /* set default BSS channel */ 1999 ic->ic_bss->ni_chan = ic->ic_ibss_chan; 2000 ural_set_chan(sc, ic->ic_bss->ni_chan); 2001 2002 /* clear statistic registers (STA_CSR0 to STA_CSR10) */ 2003 ural_read_multi(sc, RAL_STA_CSR0, sta, sizeof sta); 2004 2005 /* set default sensitivity */ 2006 ural_bbp_write(sc, 17, 0x48); 2007 2008 ural_set_txantenna(sc, 1); 2009 ural_set_rxantenna(sc, 1); 2010 2011 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 2012 ural_set_macaddr(sc, ic->ic_myaddr); 2013 2014 /* 2015 * Copy WEP keys into adapter's memory (SEC_CSR0 to SEC_CSR31). 2016 */ 2017 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2018 wk = &ic->ic_nw_keys[i]; 2019 ural_write_multi(sc, RAL_SEC_CSR0 + i * IEEE80211_KEYBUF_SIZE, 2020 wk->wk_key, IEEE80211_KEYBUF_SIZE); 2021 } 2022 2023 /* 2024 * Open Tx and Rx USB bulk pipes. 2025 */ 2026 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2027 &sc->sc_tx_pipeh); 2028 if (error != 0) { 2029 printf("%s: could not open Tx pipe: %s\n", 2030 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2031 goto fail; 2032 } 2033 2034 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2035 &sc->sc_rx_pipeh); 2036 if (error != 0) { 2037 printf("%s: could not open Rx pipe: %s\n", 2038 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2039 goto fail; 2040 } 2041 2042 /* 2043 * Allocate Tx and Rx xfer queues. 2044 */ 2045 error = ural_alloc_tx_list(sc); 2046 if (error != 0) { 2047 printf("%s: could not allocate Tx list\n", 2048 USBDEVNAME(sc->sc_dev)); 2049 goto fail; 2050 } 2051 2052 error = ural_alloc_rx_list(sc); 2053 if (error != 0) { 2054 printf("%s: could not allocate Rx list\n", 2055 USBDEVNAME(sc->sc_dev)); 2056 goto fail; 2057 } 2058 2059 /* 2060 * Start up the receive pipe. 2061 */ 2062 for (i = 0; i < RAL_RX_LIST_COUNT; i++) { 2063 data = &sc->rx_data[i]; 2064 2065 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2066 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, ural_rxeof); 2067 usbd_transfer(data->xfer); 2068 } 2069 2070 /* kick Rx */ 2071 tmp = RAL_DROP_PHY_ERROR | RAL_DROP_CRC_ERROR; 2072 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2073 tmp |= RAL_DROP_CTL | RAL_DROP_VERSION_ERROR; 2074 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2075 tmp |= RAL_DROP_TODS; 2076 if (!(ifp->if_flags & IFF_PROMISC)) 2077 tmp |= RAL_DROP_NOT_TO_ME; 2078 } 2079 ural_write(sc, RAL_TXRX_CSR2, tmp); 2080 2081 ifp->if_flags &= ~IFF_OACTIVE; 2082 ifp->if_flags |= IFF_RUNNING; 2083 2084 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2085 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2086 else 2087 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2088 2089 return 0; 2090 2091 fail: ural_stop(ifp, 1); 2092 return error; 2093 #undef N 2094 } 2095 2096 Static void 2097 ural_stop(struct ifnet *ifp, int disable) 2098 { 2099 struct ural_softc *sc = ifp->if_softc; 2100 struct ieee80211com *ic = &sc->sc_ic; 2101 2102 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2103 2104 /* disable Rx */ 2105 ural_write(sc, RAL_TXRX_CSR2, RAL_DISABLE_RX); 2106 2107 /* reset ASIC and BBP (but won't reset MAC registers!) */ 2108 ural_write(sc, RAL_MAC_CSR1, RAL_RESET_ASIC | RAL_RESET_BBP); 2109 ural_write(sc, RAL_MAC_CSR1, 0); 2110 2111 sc->sc_tx_timer = 0; 2112 ifp->if_timer = 0; 2113 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2114 2115 if (sc->sc_rx_pipeh != NULL) { 2116 usbd_abort_pipe(sc->sc_rx_pipeh); 2117 usbd_close_pipe(sc->sc_rx_pipeh); 2118 sc->sc_rx_pipeh = NULL; 2119 } 2120 2121 if (sc->sc_tx_pipeh != NULL) { 2122 usbd_abort_pipe(sc->sc_tx_pipeh); 2123 usbd_close_pipe(sc->sc_tx_pipeh); 2124 sc->sc_tx_pipeh = NULL; 2125 } 2126 2127 ural_free_rx_list(sc); 2128 ural_free_tx_list(sc); 2129 } 2130 2131 int 2132 ural_activate(device_ptr_t self, enum devact act) 2133 { 2134 struct ural_softc *sc = (struct ural_softc *)self; 2135 2136 switch (act) { 2137 case DVACT_ACTIVATE: 2138 return EOPNOTSUPP; 2139 break; 2140 2141 case DVACT_DEACTIVATE: 2142 if_deactivate(&sc->sc_if); 2143 break; 2144 } 2145 2146 return 0; 2147 } 2148
Indexes created Tue Sep 30 07:10:03 GMT 2025