if_upgt.c revision 1.20.2.2
1 /* $NetBSD: if_upgt.c,v 1.20.2.2 2020/04/08 14:08:13 martin Exp $ */ 2 /* $OpenBSD: if_upgt.c,v 1.49 2010/04/20 22:05:43 tedu Exp $ */ 3 4 /* 5 * Copyright (c) 2007 Marcus Glocker <mglocker (at) openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: if_upgt.c,v 1.20.2.2 2020/04/08 14:08:13 martin Exp $"); 22 23 #ifdef _KERNEL_OPT 24 #include "opt_usb.h" 25 #endif 26 27 #include <sys/param.h> 28 #include <sys/callout.h> 29 #include <sys/device.h> 30 #include <sys/errno.h> 31 #include <sys/kernel.h> 32 #include <sys/kthread.h> 33 #include <sys/mbuf.h> 34 #include <sys/proc.h> 35 #include <sys/sockio.h> 36 #include <sys/systm.h> 37 #include <sys/vnode.h> 38 #include <sys/bus.h> 39 #include <sys/endian.h> 40 #include <sys/intr.h> 41 42 #include <net/bpf.h> 43 #include <net/if.h> 44 #include <net/if_arp.h> 45 #include <net/if_dl.h> 46 #include <net/if_ether.h> 47 #include <net/if_media.h> 48 #include <net/if_types.h> 49 50 #include <net80211/ieee80211_var.h> 51 #include <net80211/ieee80211_radiotap.h> 52 53 #include <dev/firmload.h> 54 55 #include <dev/usb/usb.h> 56 #include <dev/usb/usbdi.h> 57 #include <dev/usb/usbdi_util.h> 58 #include <dev/usb/usbdivar.h> 59 #include <dev/usb/usbdevs.h> 60 61 #include <dev/usb/if_upgtvar.h> 62 63 /* 64 * Driver for the USB PrismGT devices. 65 * 66 * For now just USB 2.0 devices with the GW3887 chipset are supported. 67 * The driver has been written based on the firmware version 2.13.1.0_LM87. 68 * 69 * TODO's: 70 * - Fix MONITOR mode (MAC filter). 71 * - Add HOSTAP mode. 72 * - Add IBSS mode. 73 * - Support the USB 1.0 devices (NET2280, ISL3880, ISL3886 chipsets). 74 * 75 * Parts of this driver has been influenced by reading the p54u driver 76 * written by Jean-Baptiste Note <jean-baptiste.note (at) m4x.org> and 77 * Sebastien Bourdeauducq <lekernel (at) prism54.org>. 78 */ 79 80 #ifdef UPGT_DEBUG 81 int upgt_debug = 2; 82 #define DPRINTF(l, x...) do { if ((l) <= upgt_debug) printf(x); } while (0) 83 #else 84 #define DPRINTF(l, x...) 85 #endif 86 87 /* 88 * Prototypes. 89 */ 90 static int upgt_match(device_t, cfdata_t, void *); 91 static void upgt_attach(device_t, device_t, void *); 92 static int upgt_detach(device_t, int); 93 static int upgt_activate(device_t, devact_t); 94 95 static void upgt_attach_hook(device_t); 96 static int upgt_device_type(struct upgt_softc *, uint16_t, uint16_t); 97 static int upgt_device_init(struct upgt_softc *); 98 static int upgt_mem_init(struct upgt_softc *); 99 static uint32_t upgt_mem_alloc(struct upgt_softc *); 100 static void upgt_mem_free(struct upgt_softc *, uint32_t); 101 static int upgt_fw_alloc(struct upgt_softc *); 102 static void upgt_fw_free(struct upgt_softc *); 103 static int upgt_fw_verify(struct upgt_softc *); 104 static int upgt_fw_load(struct upgt_softc *); 105 static int upgt_fw_copy(char *, char *, int); 106 static int upgt_eeprom_read(struct upgt_softc *); 107 static int upgt_eeprom_parse(struct upgt_softc *); 108 static void upgt_eeprom_parse_hwrx(struct upgt_softc *, uint8_t *); 109 static void upgt_eeprom_parse_freq3(struct upgt_softc *, uint8_t *, int); 110 static void upgt_eeprom_parse_freq4(struct upgt_softc *, uint8_t *, int); 111 static void upgt_eeprom_parse_freq6(struct upgt_softc *, uint8_t *, int); 112 113 static int upgt_ioctl(struct ifnet *, u_long, void *); 114 static int upgt_init(struct ifnet *); 115 static void upgt_stop(struct upgt_softc *); 116 static int upgt_media_change(struct ifnet *); 117 static void upgt_newassoc(struct ieee80211_node *, int); 118 static int upgt_newstate(struct ieee80211com *, enum ieee80211_state, 119 int); 120 static void upgt_newstate_task(void *); 121 static void upgt_next_scan(void *); 122 static void upgt_start(struct ifnet *); 123 static void upgt_watchdog(struct ifnet *); 124 static void upgt_tx_task(void *); 125 static void upgt_tx_done(struct upgt_softc *, uint8_t *); 126 static void upgt_rx_cb(struct usbd_xfer *, void *, usbd_status); 127 static void upgt_rx(struct upgt_softc *, uint8_t *, int); 128 static void upgt_setup_rates(struct upgt_softc *); 129 static uint8_t upgt_rx_rate(struct upgt_softc *, const int); 130 static int upgt_set_macfilter(struct upgt_softc *, uint8_t); 131 static int upgt_set_channel(struct upgt_softc *, unsigned); 132 static void upgt_set_led(struct upgt_softc *, int); 133 static void upgt_set_led_blink(void *); 134 static int upgt_get_stats(struct upgt_softc *); 135 136 static int upgt_alloc_tx(struct upgt_softc *); 137 static int upgt_alloc_rx(struct upgt_softc *); 138 static int upgt_alloc_cmd(struct upgt_softc *); 139 static void upgt_free_tx(struct upgt_softc *); 140 static void upgt_free_rx(struct upgt_softc *); 141 static void upgt_free_cmd(struct upgt_softc *); 142 static int upgt_bulk_xmit(struct upgt_softc *, struct upgt_data *, 143 struct usbd_pipe *, uint32_t *, int); 144 145 #if 0 146 static void upgt_hexdump(void *, int); 147 #endif 148 static uint32_t upgt_crc32_le(const void *, size_t); 149 static uint32_t upgt_chksum_le(const uint32_t *, size_t); 150 151 CFATTACH_DECL_NEW(upgt, sizeof(struct upgt_softc), 152 upgt_match, upgt_attach, upgt_detach, upgt_activate); 153 154 static const struct usb_devno upgt_devs_1[] = { 155 /* version 1 devices */ 156 { USB_VENDOR_ALCATELT, USB_PRODUCT_ALCATELT_ST120G }, 157 { USB_VENDOR_SMC, USB_PRODUCT_SMC_2862WG_V1 } 158 }; 159 160 static const struct usb_devno upgt_devs_2[] = { 161 /* version 2 devices */ 162 { USB_VENDOR_ACCTON, USB_PRODUCT_ACCTON_PRISM_GT }, 163 { USB_VENDOR_ALCATELT, USB_PRODUCT_ALCATELT_ST121G }, 164 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050 }, 165 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54AG }, 166 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GV2 }, 167 { USB_VENDOR_CONCEPTRONIC2, USB_PRODUCT_CONCEPTRONIC2_PRISM_GT }, 168 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GTST }, 169 { USB_VENDOR_DELL, USB_PRODUCT_DELL_PRISM_GT_1 }, 170 { USB_VENDOR_DELL, USB_PRODUCT_DELL_PRISM_GT_2 }, 171 { USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DWLG122A2 }, 172 { USB_VENDOR_FSC, USB_PRODUCT_FSC_E5400 }, 173 { USB_VENDOR_GLOBESPAN, USB_PRODUCT_GLOBESPAN_PRISM_GT_1 }, 174 { USB_VENDOR_GLOBESPAN, USB_PRODUCT_GLOBESPAN_PRISM_GT_2 }, 175 { USB_VENDOR_INTERSIL, USB_PRODUCT_INTERSIL_PRISM_GT }, 176 { USB_VENDOR_PHEENET, USB_PRODUCT_PHEENET_GWU513 }, 177 { USB_VENDOR_PHILIPS, USB_PRODUCT_PHILIPS_CPWUA054 }, 178 { USB_VENDOR_SHARP, USB_PRODUCT_SHARP_RUITZ1016YCZZ }, 179 { USB_VENDOR_SMC, USB_PRODUCT_SMC_2862WG }, 180 { USB_VENDOR_USR, USB_PRODUCT_USR_USR5422 }, 181 { USB_VENDOR_WISTRONNEWEB, USB_PRODUCT_WISTRONNEWEB_UR045G }, 182 { USB_VENDOR_CONEXANT, USB_PRODUCT_CONEXANT_PRISM_GT_1 }, 183 { USB_VENDOR_CONEXANT, USB_PRODUCT_CONEXANT_PRISM_GT_2 }, 184 { USB_VENDOR_ZCOM, USB_PRODUCT_ZCOM_MD40900 }, 185 { USB_VENDOR_ZCOM, USB_PRODUCT_ZCOM_XG703A } 186 }; 187 188 static int 189 firmware_load(const char *dname, const char *iname, uint8_t **ucodep, 190 size_t *sizep) 191 { 192 firmware_handle_t fh; 193 int error; 194 195 if ((error = firmware_open(dname, iname, &fh)) != 0) 196 return error; 197 *sizep = firmware_get_size(fh); 198 if ((*ucodep = firmware_malloc(*sizep)) == NULL) { 199 firmware_close(fh); 200 return ENOMEM; 201 } 202 if ((error = firmware_read(fh, 0, *ucodep, *sizep)) != 0) 203 firmware_free(*ucodep, *sizep); 204 firmware_close(fh); 205 206 return error; 207 } 208 209 static int 210 upgt_match(device_t parent, cfdata_t match, void *aux) 211 { 212 struct usb_attach_arg *uaa = aux; 213 214 if (usb_lookup(upgt_devs_1, uaa->uaa_vendor, uaa->uaa_product) != NULL) 215 return UMATCH_VENDOR_PRODUCT; 216 217 if (usb_lookup(upgt_devs_2, uaa->uaa_vendor, uaa->uaa_product) != NULL) 218 return UMATCH_VENDOR_PRODUCT; 219 220 return UMATCH_NONE; 221 } 222 223 static void 224 upgt_attach(device_t parent, device_t self, void *aux) 225 { 226 struct upgt_softc *sc = device_private(self); 227 struct usb_attach_arg *uaa = aux; 228 usb_interface_descriptor_t *id; 229 usb_endpoint_descriptor_t *ed; 230 usbd_status error; 231 char *devinfop; 232 int i; 233 234 aprint_naive("\n"); 235 aprint_normal("\n"); 236 237 /* 238 * Attach USB device. 239 */ 240 sc->sc_dev = self; 241 sc->sc_udev = uaa->uaa_device; 242 243 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 244 aprint_normal_dev(sc->sc_dev, "%s\n", devinfop); 245 usbd_devinfo_free(devinfop); 246 247 /* check device type */ 248 if (upgt_device_type(sc, uaa->uaa_vendor, uaa->uaa_product) != 0) 249 return; 250 251 /* set configuration number */ 252 error = usbd_set_config_no(sc->sc_udev, UPGT_CONFIG_NO, 0); 253 if (error != 0) { 254 aprint_error_dev(sc->sc_dev, "failed to set configuration" 255 ", err=%s\n", usbd_errstr(error)); 256 return; 257 } 258 259 /* get the first interface handle */ 260 error = usbd_device2interface_handle(sc->sc_udev, UPGT_IFACE_INDEX, 261 &sc->sc_iface); 262 if (error != 0) { 263 aprint_error_dev(sc->sc_dev, 264 "could not get interface handle\n"); 265 return; 266 } 267 268 /* find endpoints */ 269 id = usbd_get_interface_descriptor(sc->sc_iface); 270 sc->sc_rx_no = sc->sc_tx_no = -1; 271 for (i = 0; i < id->bNumEndpoints; i++) { 272 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 273 if (ed == NULL) { 274 aprint_error_dev(sc->sc_dev, 275 "no endpoint descriptor for iface %d\n", i); 276 return; 277 } 278 279 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 280 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 281 sc->sc_tx_no = ed->bEndpointAddress; 282 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 283 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 284 sc->sc_rx_no = ed->bEndpointAddress; 285 286 /* 287 * 0x01 TX pipe 288 * 0x81 RX pipe 289 * 290 * Deprecated scheme (not used with fw version >2.5.6.x): 291 * 0x02 TX MGMT pipe 292 * 0x82 TX MGMT pipe 293 */ 294 if (sc->sc_tx_no != -1 && sc->sc_rx_no != -1) 295 break; 296 } 297 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 298 aprint_error_dev(sc->sc_dev, "missing endpoint\n"); 299 return; 300 } 301 302 /* setup tasks and timeouts */ 303 usb_init_task(&sc->sc_task_newstate, upgt_newstate_task, sc, 0); 304 usb_init_task(&sc->sc_task_tx, upgt_tx_task, sc, 0); 305 callout_init(&sc->scan_to, 0); 306 callout_setfunc(&sc->scan_to, upgt_next_scan, sc); 307 callout_init(&sc->led_to, 0); 308 callout_setfunc(&sc->led_to, upgt_set_led_blink, sc); 309 310 /* 311 * Open TX and RX USB bulk pipes. 312 */ 313 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 314 &sc->sc_tx_pipeh); 315 if (error != 0) { 316 aprint_error_dev(sc->sc_dev, 317 "could not open TX pipe: %s\n", usbd_errstr(error)); 318 goto fail; 319 } 320 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 321 &sc->sc_rx_pipeh); 322 if (error != 0) { 323 aprint_error_dev(sc->sc_dev, "could not open RX pipe: %s\n", 324 usbd_errstr(error)); 325 goto fail; 326 } 327 328 /* 329 * Allocate TX, RX, and CMD xfers. 330 */ 331 if (upgt_alloc_tx(sc) != 0) 332 goto fail; 333 if (upgt_alloc_rx(sc) != 0) 334 goto fail; 335 if (upgt_alloc_cmd(sc) != 0) 336 goto fail; 337 338 /* 339 * We need the firmware loaded from file system to complete the attach. 340 */ 341 config_mountroot(self, upgt_attach_hook); 342 343 return; 344 fail: 345 aprint_error_dev(sc->sc_dev, "%s failed\n", __func__); 346 } 347 348 static void 349 upgt_attach_hook(device_t arg) 350 { 351 struct upgt_softc *sc = device_private(arg); 352 struct ieee80211com *ic = &sc->sc_ic; 353 struct ifnet *ifp = &sc->sc_if; 354 usbd_status error; 355 int i; 356 357 /* 358 * Load firmware file into memory. 359 */ 360 if (upgt_fw_alloc(sc) != 0) 361 goto fail; 362 363 /* 364 * Initialize the device. 365 */ 366 if (upgt_device_init(sc) != 0) 367 goto fail; 368 369 /* 370 * Verify the firmware. 371 */ 372 if (upgt_fw_verify(sc) != 0) 373 goto fail; 374 375 /* 376 * Calculate device memory space. 377 */ 378 if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) { 379 aprint_error_dev(sc->sc_dev, 380 "could not find memory space addresses on FW\n"); 381 goto fail; 382 } 383 sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1; 384 sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1; 385 386 DPRINTF(1, "%s: memory address frame start=0x%08x\n", 387 device_xname(sc->sc_dev), sc->sc_memaddr_frame_start); 388 DPRINTF(1, "%s: memory address frame end=0x%08x\n", 389 device_xname(sc->sc_dev), sc->sc_memaddr_frame_end); 390 DPRINTF(1, "%s: memory address rx start=0x%08x\n", 391 device_xname(sc->sc_dev), sc->sc_memaddr_rx_start); 392 393 upgt_mem_init(sc); 394 395 /* 396 * Load the firmware. 397 */ 398 if (upgt_fw_load(sc) != 0) 399 goto fail; 400 401 /* 402 * Startup the RX pipe. 403 */ 404 struct upgt_data *data_rx = &sc->rx_data; 405 406 usbd_setup_xfer(data_rx->xfer, data_rx, data_rx->buf, 407 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, upgt_rx_cb); 408 error = usbd_transfer(data_rx->xfer); 409 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 410 aprint_error_dev(sc->sc_dev, 411 "could not queue RX transfer\n"); 412 goto fail; 413 } 414 usbd_delay_ms(sc->sc_udev, 100); 415 416 /* 417 * Read the whole EEPROM content and parse it. 418 */ 419 if (upgt_eeprom_read(sc) != 0) 420 goto fail; 421 if (upgt_eeprom_parse(sc) != 0) 422 goto fail; 423 424 /* 425 * Setup the 802.11 device. 426 */ 427 ic->ic_ifp = ifp; 428 ic->ic_phytype = IEEE80211_T_OFDM; 429 ic->ic_opmode = IEEE80211_M_STA; 430 ic->ic_state = IEEE80211_S_INIT; 431 ic->ic_caps = 432 IEEE80211_C_MONITOR | 433 IEEE80211_C_SHPREAMBLE | 434 IEEE80211_C_SHSLOT; 435 436 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 437 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 438 439 for (i = 1; i <= 14; i++) { 440 ic->ic_channels[i].ic_freq = 441 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 442 ic->ic_channels[i].ic_flags = 443 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 444 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 445 } 446 447 ifp->if_softc = sc; 448 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 449 ifp->if_init = upgt_init; 450 ifp->if_ioctl = upgt_ioctl; 451 ifp->if_start = upgt_start; 452 ifp->if_watchdog = upgt_watchdog; 453 IFQ_SET_READY(&ifp->if_snd); 454 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 455 456 if_attach(ifp); 457 ieee80211_ifattach(ic); 458 ic->ic_newassoc = upgt_newassoc; 459 460 sc->sc_newstate = ic->ic_newstate; 461 ic->ic_newstate = upgt_newstate; 462 463 /* XXX media locking needs revisiting */ 464 mutex_init(&sc->sc_media_mtx, MUTEX_DEFAULT, IPL_SOFTUSB); 465 ieee80211_media_init_with_lock(ic, 466 upgt_media_change, ieee80211_media_status, &sc->sc_media_mtx); 467 468 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 469 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 470 &sc->sc_drvbpf); 471 472 sc->sc_rxtap_len = sizeof(sc->sc_rxtapu); 473 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 474 sc->sc_rxtap.wr_ihdr.it_present = htole32(UPGT_RX_RADIOTAP_PRESENT); 475 476 sc->sc_txtap_len = sizeof(sc->sc_txtapu); 477 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 478 sc->sc_txtap.wt_ihdr.it_present = htole32(UPGT_TX_RADIOTAP_PRESENT); 479 480 aprint_normal_dev(sc->sc_dev, "address %s\n", 481 ether_sprintf(ic->ic_myaddr)); 482 483 ieee80211_announce(ic); 484 485 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 486 487 /* device attached */ 488 sc->sc_flags |= UPGT_DEVICE_ATTACHED; 489 490 return; 491 fail: 492 aprint_error_dev(sc->sc_dev, "%s failed\n", __func__); 493 } 494 495 static int 496 upgt_detach(device_t self, int flags) 497 { 498 struct upgt_softc *sc = device_private(self); 499 struct ifnet *ifp = &sc->sc_if; 500 struct ieee80211com *ic = &sc->sc_ic; 501 int s; 502 503 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 504 505 s = splnet(); 506 507 if (ifp->if_flags & IFF_RUNNING) 508 upgt_stop(sc); 509 510 /* remove tasks and timeouts */ 511 callout_halt(&sc->scan_to, NULL); 512 callout_halt(&sc->led_to, NULL); 513 usb_rem_task_wait(sc->sc_udev, &sc->sc_task_newstate, USB_TASKQ_DRIVER, 514 NULL); 515 usb_rem_task_wait(sc->sc_udev, &sc->sc_task_tx, USB_TASKQ_DRIVER, 516 NULL); 517 callout_destroy(&sc->scan_to); 518 callout_destroy(&sc->led_to); 519 520 /* abort and close TX / RX pipes */ 521 if (sc->sc_tx_pipeh != NULL) { 522 usbd_abort_pipe(sc->sc_tx_pipeh); 523 } 524 if (sc->sc_rx_pipeh != NULL) { 525 usbd_abort_pipe(sc->sc_rx_pipeh); 526 } 527 528 /* free xfers */ 529 upgt_free_tx(sc); 530 upgt_free_rx(sc); 531 upgt_free_cmd(sc); 532 533 /* Close TX / RX pipes */ 534 if (sc->sc_tx_pipeh != NULL) { 535 usbd_close_pipe(sc->sc_tx_pipeh); 536 } 537 if (sc->sc_rx_pipeh != NULL) { 538 usbd_close_pipe(sc->sc_rx_pipeh); 539 } 540 541 /* free firmware */ 542 upgt_fw_free(sc); 543 544 if (sc->sc_flags & UPGT_DEVICE_ATTACHED) { 545 /* detach interface */ 546 bpf_detach(ifp); 547 ieee80211_ifdetach(ic); 548 if_detach(ifp); 549 } 550 551 splx(s); 552 553 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 554 555 return 0; 556 } 557 558 static int 559 upgt_activate(device_t self, devact_t act) 560 { 561 struct upgt_softc *sc = device_private(self); 562 563 switch (act) { 564 case DVACT_DEACTIVATE: 565 if_deactivate(&sc->sc_if); 566 return 0; 567 default: 568 return EOPNOTSUPP; 569 } 570 } 571 572 static int 573 upgt_device_type(struct upgt_softc *sc, uint16_t vendor, uint16_t product) 574 { 575 576 if (usb_lookup(upgt_devs_1, vendor, product) != NULL) { 577 sc->sc_device_type = 1; 578 /* XXX */ 579 aprint_error_dev(sc->sc_dev, 580 "version 1 devices not supported yet\n"); 581 return 1; 582 } else 583 sc->sc_device_type = 2; 584 585 return 0; 586 } 587 588 static int 589 upgt_device_init(struct upgt_softc *sc) 590 { 591 struct upgt_data *data_cmd = &sc->cmd_data; 592 const uint8_t init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e }; 593 int len; 594 595 len = sizeof(init_cmd); 596 memcpy(data_cmd->buf, init_cmd, len); 597 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 598 aprint_error_dev(sc->sc_dev, 599 "could not send device init string\n"); 600 return EIO; 601 } 602 usbd_delay_ms(sc->sc_udev, 100); 603 604 DPRINTF(1, "%s: device initialized\n", device_xname(sc->sc_dev)); 605 606 return 0; 607 } 608 609 static int 610 upgt_mem_init(struct upgt_softc *sc) 611 { 612 int i; 613 614 for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) { 615 sc->sc_memory.page[i].used = 0; 616 617 if (i == 0) { 618 /* 619 * The first memory page is always reserved for 620 * command data. 621 */ 622 sc->sc_memory.page[i].addr = 623 sc->sc_memaddr_frame_start + MCLBYTES; 624 } else { 625 sc->sc_memory.page[i].addr = 626 sc->sc_memory.page[i - 1].addr + MCLBYTES; 627 } 628 629 if (sc->sc_memory.page[i].addr + MCLBYTES >= 630 sc->sc_memaddr_frame_end) 631 break; 632 633 DPRINTF(2, "%s: memory address page %d=0x%08x\n", 634 device_xname(sc->sc_dev), i, sc->sc_memory.page[i].addr); 635 } 636 637 sc->sc_memory.pages = i; 638 639 DPRINTF(2, "%s: memory pages=%d\n", 640 device_xname(sc->sc_dev), sc->sc_memory.pages); 641 642 return 0; 643 } 644 645 static uint32_t 646 upgt_mem_alloc(struct upgt_softc *sc) 647 { 648 int i; 649 650 for (i = 0; i < sc->sc_memory.pages; i++) { 651 if (sc->sc_memory.page[i].used == 0) { 652 sc->sc_memory.page[i].used = 1; 653 return sc->sc_memory.page[i].addr; 654 } 655 } 656 657 return 0; 658 } 659 660 static void 661 upgt_mem_free(struct upgt_softc *sc, uint32_t addr) 662 { 663 int i; 664 665 for (i = 0; i < sc->sc_memory.pages; i++) { 666 if (sc->sc_memory.page[i].addr == addr) { 667 sc->sc_memory.page[i].used = 0; 668 return; 669 } 670 } 671 672 aprint_error_dev(sc->sc_dev, "could not free memory address 0x%08x\n", 673 addr); 674 } 675 676 677 static int 678 upgt_fw_alloc(struct upgt_softc *sc) 679 { 680 const char *name = "upgt-gw3887"; 681 int error; 682 683 if (sc->sc_fw == NULL) { 684 error = firmware_load("upgt", name, &sc->sc_fw, 685 &sc->sc_fw_size); 686 if (error != 0) { 687 if (error == ENOENT) { 688 /* 689 * The firmware file for upgt(4) is not in 690 * the default distribution due to its lisence 691 * so explicitly notify it if the firmware file 692 * is not found. 693 */ 694 aprint_error_dev(sc->sc_dev, 695 "firmware file %s is not installed\n", 696 name); 697 aprint_error_dev(sc->sc_dev, 698 "(it is not included in the default" 699 " distribution)\n"); 700 aprint_error_dev(sc->sc_dev, 701 "see upgt(4) man page for details about " 702 "firmware installation\n"); 703 } else { 704 aprint_error_dev(sc->sc_dev, 705 "could not read firmware %s\n", name); 706 } 707 return EIO; 708 } 709 } 710 711 DPRINTF(1, "%s: firmware %s allocated\n", device_xname(sc->sc_dev), 712 name); 713 714 return 0; 715 } 716 717 static void 718 upgt_fw_free(struct upgt_softc *sc) 719 { 720 721 if (sc->sc_fw != NULL) { 722 firmware_free(sc->sc_fw, sc->sc_fw_size); 723 sc->sc_fw = NULL; 724 DPRINTF(1, "%s: firmware freed\n", device_xname(sc->sc_dev)); 725 } 726 } 727 728 static int 729 upgt_fw_verify(struct upgt_softc *sc) 730 { 731 struct upgt_fw_bra_option *bra_option; 732 uint32_t bra_option_type, bra_option_len; 733 uint32_t *uc; 734 int offset, bra_end = 0; 735 736 /* 737 * Seek to beginning of Boot Record Area (BRA). 738 */ 739 for (offset = 0; offset < sc->sc_fw_size; offset += sizeof(*uc)) { 740 uc = (uint32_t *)(sc->sc_fw + offset); 741 if (*uc == 0) 742 break; 743 } 744 for (; offset < sc->sc_fw_size; offset += sizeof(*uc)) { 745 uc = (uint32_t *)(sc->sc_fw + offset); 746 if (*uc != 0) 747 break; 748 } 749 if (offset == sc->sc_fw_size) { 750 aprint_error_dev(sc->sc_dev, 751 "firmware Boot Record Area not found\n"); 752 return EIO; 753 } 754 DPRINTF(1, "%s: firmware Boot Record Area found at offset %d\n", 755 device_xname(sc->sc_dev), offset); 756 757 /* 758 * Parse Boot Record Area (BRA) options. 759 */ 760 while (offset < sc->sc_fw_size && bra_end == 0) { 761 /* get current BRA option */ 762 bra_option = (struct upgt_fw_bra_option *)(sc->sc_fw + offset); 763 bra_option_type = le32toh(bra_option->type); 764 bra_option_len = le32toh(bra_option->len) * sizeof(*uc); 765 766 switch (bra_option_type) { 767 case UPGT_BRA_TYPE_FW: 768 DPRINTF(1, "%s: UPGT_BRA_TYPE_FW len=%d\n", 769 device_xname(sc->sc_dev), bra_option_len); 770 771 if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) { 772 aprint_error_dev(sc->sc_dev, 773 "wrong UPGT_BRA_TYPE_FW len\n"); 774 return EIO; 775 } 776 if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_option->data, 777 bra_option_len) == 0) { 778 sc->sc_fw_type = UPGT_FWTYPE_LM86; 779 break; 780 } 781 if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_option->data, 782 bra_option_len) == 0) { 783 sc->sc_fw_type = UPGT_FWTYPE_LM87; 784 break; 785 } 786 if (memcmp(UPGT_BRA_FWTYPE_FMAC, bra_option->data, 787 bra_option_len) == 0) { 788 sc->sc_fw_type = UPGT_FWTYPE_FMAC; 789 break; 790 } 791 aprint_error_dev(sc->sc_dev, 792 "unsupported firmware type\n"); 793 return EIO; 794 case UPGT_BRA_TYPE_VERSION: 795 DPRINTF(1, "%s: UPGT_BRA_TYPE_VERSION len=%d\n", 796 device_xname(sc->sc_dev), bra_option_len); 797 break; 798 case UPGT_BRA_TYPE_DEPIF: 799 DPRINTF(1, "%s: UPGT_BRA_TYPE_DEPIF len=%d\n", 800 device_xname(sc->sc_dev), bra_option_len); 801 break; 802 case UPGT_BRA_TYPE_EXPIF: 803 DPRINTF(1, "%s: UPGT_BRA_TYPE_EXPIF len=%d\n", 804 device_xname(sc->sc_dev), bra_option_len); 805 break; 806 case UPGT_BRA_TYPE_DESCR: 807 DPRINTF(1, "%s: UPGT_BRA_TYPE_DESCR len=%d\n", 808 device_xname(sc->sc_dev), bra_option_len); 809 810 struct upgt_fw_bra_descr *descr = 811 (struct upgt_fw_bra_descr *)bra_option->data; 812 813 sc->sc_memaddr_frame_start = 814 le32toh(descr->memaddr_space_start); 815 sc->sc_memaddr_frame_end = 816 le32toh(descr->memaddr_space_end); 817 818 DPRINTF(2, "%s: memory address space start=0x%08x\n", 819 device_xname(sc->sc_dev), 820 sc->sc_memaddr_frame_start); 821 DPRINTF(2, "%s: memory address space end=0x%08x\n", 822 device_xname(sc->sc_dev), 823 sc->sc_memaddr_frame_end); 824 break; 825 case UPGT_BRA_TYPE_END: 826 DPRINTF(1, "%s: UPGT_BRA_TYPE_END len=%d\n", 827 device_xname(sc->sc_dev), bra_option_len); 828 bra_end = 1; 829 break; 830 default: 831 DPRINTF(1, "%s: unknown BRA option len=%d\n", 832 device_xname(sc->sc_dev), bra_option_len); 833 return EIO; 834 } 835 836 /* jump to next BRA option */ 837 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len; 838 } 839 840 DPRINTF(1, "%s: firmware verified\n", device_xname(sc->sc_dev)); 841 842 return 0; 843 } 844 845 static int 846 upgt_fw_load(struct upgt_softc *sc) 847 { 848 struct upgt_data *data_cmd = &sc->cmd_data; 849 struct upgt_data *data_rx = &sc->rx_data; 850 struct upgt_fw_x2_header *x2; 851 const uint8_t start_fwload_cmd[] = { 0x3c, 0x0d }; 852 int offset, bsize, n, i, len; 853 uint32_t crc; 854 855 /* send firmware start load command */ 856 len = sizeof(start_fwload_cmd); 857 memcpy(data_cmd->buf, start_fwload_cmd, len); 858 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 859 aprint_error_dev(sc->sc_dev, 860 "could not send start_firmware_load command\n"); 861 return EIO; 862 } 863 864 /* send X2 header */ 865 len = sizeof(struct upgt_fw_x2_header); 866 x2 = (struct upgt_fw_x2_header *)data_cmd->buf; 867 memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE); 868 x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START); 869 x2->len = htole32(sc->sc_fw_size); 870 x2->crc = upgt_crc32_le(data_cmd->buf + UPGT_X2_SIGNATURE_SIZE, 871 sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE - 872 sizeof(uint32_t)); 873 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 874 aprint_error_dev(sc->sc_dev, 875 "could not send firmware X2 header\n"); 876 return EIO; 877 } 878 879 /* download firmware */ 880 for (offset = 0; offset < sc->sc_fw_size; offset += bsize) { 881 if (sc->sc_fw_size - offset > UPGT_FW_BLOCK_SIZE) 882 bsize = UPGT_FW_BLOCK_SIZE; 883 else 884 bsize = sc->sc_fw_size - offset; 885 886 n = upgt_fw_copy(sc->sc_fw + offset, data_cmd->buf, bsize); 887 888 DPRINTF(1, "%s: FW offset=%d, read=%d, sent=%d\n", 889 device_xname(sc->sc_dev), offset, n, bsize); 890 891 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &bsize, 0) 892 != 0) { 893 aprint_error_dev(sc->sc_dev, 894 "error while downloading firmware block\n"); 895 return EIO; 896 } 897 898 bsize = n; 899 } 900 DPRINTF(1, "%s: firmware downloaded\n", device_xname(sc->sc_dev)); 901 902 /* load firmware */ 903 crc = upgt_crc32_le(sc->sc_fw, sc->sc_fw_size); 904 *((uint32_t *)(data_cmd->buf) ) = crc; 905 *((uint8_t *)(data_cmd->buf) + 4) = 'g'; 906 *((uint8_t *)(data_cmd->buf) + 5) = '\r'; 907 len = 6; 908 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 909 aprint_error_dev(sc->sc_dev, 910 "could not send load_firmware command\n"); 911 return EIO; 912 } 913 914 for (i = 0; i < UPGT_FIRMWARE_TIMEOUT; i++) { 915 len = UPGT_FW_BLOCK_SIZE; 916 memset(data_rx->buf, 0, 2); 917 if (upgt_bulk_xmit(sc, data_rx, sc->sc_rx_pipeh, &len, 918 USBD_SHORT_XFER_OK) != 0) { 919 aprint_error_dev(sc->sc_dev, 920 "could not read firmware response\n"); 921 return EIO; 922 } 923 924 if (memcmp(data_rx->buf, "OK", 2) == 0) 925 break; /* firmware load was successful */ 926 } 927 if (i == UPGT_FIRMWARE_TIMEOUT) { 928 aprint_error_dev(sc->sc_dev, "firmware load failed\n"); 929 return EIO; 930 } 931 DPRINTF(1, "%s: firmware loaded\n", device_xname(sc->sc_dev)); 932 933 return 0; 934 } 935 936 /* 937 * While copying the version 2 firmware, we need to replace two characters: 938 * 939 * 0x7e -> 0x7d 0x5e 940 * 0x7d -> 0x7d 0x5d 941 */ 942 static int 943 upgt_fw_copy(char *src, char *dst, int size) 944 { 945 int i, j; 946 947 for (i = 0, j = 0; i < size && j < size; i++) { 948 switch (src[i]) { 949 case 0x7e: 950 dst[j] = 0x7d; 951 j++; 952 dst[j] = 0x5e; 953 j++; 954 break; 955 case 0x7d: 956 dst[j] = 0x7d; 957 j++; 958 dst[j] = 0x5d; 959 j++; 960 break; 961 default: 962 dst[j] = src[i]; 963 j++; 964 break; 965 } 966 } 967 968 return i; 969 } 970 971 static int 972 upgt_eeprom_read(struct upgt_softc *sc) 973 { 974 struct upgt_data *data_cmd = &sc->cmd_data; 975 struct upgt_lmac_mem *mem; 976 struct upgt_lmac_eeprom *eeprom; 977 int offset, block, len; 978 979 offset = 0; 980 block = UPGT_EEPROM_BLOCK_SIZE; 981 while (offset < UPGT_EEPROM_SIZE) { 982 DPRINTF(1, "%s: request EEPROM block (offset=%d, len=%d)\n", 983 device_xname(sc->sc_dev), offset, block); 984 985 /* 986 * Transmit the URB containing the CMD data. 987 */ 988 len = sizeof(*mem) + sizeof(*eeprom) + block; 989 990 memset(data_cmd->buf, 0, len); 991 992 mem = (struct upgt_lmac_mem *)data_cmd->buf; 993 mem->addr = htole32(sc->sc_memaddr_frame_start + 994 UPGT_MEMSIZE_FRAME_HEAD); 995 996 eeprom = (struct upgt_lmac_eeprom *)(mem + 1); 997 eeprom->header1.flags = 0; 998 eeprom->header1.type = UPGT_H1_TYPE_CTRL; 999 eeprom->header1.len = htole16(( 1000 sizeof(struct upgt_lmac_eeprom) - 1001 sizeof(struct upgt_lmac_header)) + block); 1002 1003 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start); 1004 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM); 1005 eeprom->header2.flags = 0; 1006 1007 eeprom->offset = htole16(offset); 1008 eeprom->len = htole16(block); 1009 1010 mem->chksum = upgt_chksum_le((uint32_t *)eeprom, 1011 len - sizeof(*mem)); 1012 1013 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 1014 USBD_FORCE_SHORT_XFER) != 0) { 1015 aprint_error_dev(sc->sc_dev, 1016 "could not transmit EEPROM data URB\n"); 1017 return EIO; 1018 } 1019 1020 mutex_enter(&sc->sc_mtx); 1021 int res = cv_timedwait(&sc->sc_cv, &sc->sc_mtx, UPGT_USB_TIMEOUT); 1022 mutex_exit(&sc->sc_mtx); 1023 if (res) { 1024 aprint_error_dev(sc->sc_dev, 1025 "timeout while waiting for EEPROM data\n"); 1026 return EIO; 1027 } 1028 1029 offset += block; 1030 if (UPGT_EEPROM_SIZE - offset < block) 1031 block = UPGT_EEPROM_SIZE - offset; 1032 } 1033 1034 return 0; 1035 } 1036 1037 static int 1038 upgt_eeprom_parse(struct upgt_softc *sc) 1039 { 1040 struct ieee80211com *ic = &sc->sc_ic; 1041 struct upgt_eeprom_header *eeprom_header; 1042 struct upgt_eeprom_option *eeprom_option; 1043 uint16_t option_len; 1044 uint16_t option_type; 1045 uint16_t preamble_len; 1046 int option_end = 0; 1047 1048 /* calculate eeprom options start offset */ 1049 eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom; 1050 preamble_len = le16toh(eeprom_header->preamble_len); 1051 eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom + 1052 (sizeof(struct upgt_eeprom_header) + preamble_len)); 1053 1054 while (!option_end) { 1055 /* the eeprom option length is stored in words */ 1056 option_len = 1057 (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t); 1058 option_type = 1059 le16toh(eeprom_option->type); 1060 1061 switch (option_type) { 1062 case UPGT_EEPROM_TYPE_NAME: 1063 DPRINTF(1, "%s: EEPROM name len=%d\n", 1064 device_xname(sc->sc_dev), option_len); 1065 break; 1066 case UPGT_EEPROM_TYPE_SERIAL: 1067 DPRINTF(1, "%s: EEPROM serial len=%d\n", 1068 device_xname(sc->sc_dev), option_len); 1069 break; 1070 case UPGT_EEPROM_TYPE_MAC: 1071 DPRINTF(1, "%s: EEPROM mac len=%d\n", 1072 device_xname(sc->sc_dev), option_len); 1073 1074 IEEE80211_ADDR_COPY(ic->ic_myaddr, eeprom_option->data); 1075 break; 1076 case UPGT_EEPROM_TYPE_HWRX: 1077 DPRINTF(1, "%s: EEPROM hwrx len=%d\n", 1078 device_xname(sc->sc_dev), option_len); 1079 1080 upgt_eeprom_parse_hwrx(sc, eeprom_option->data); 1081 break; 1082 case UPGT_EEPROM_TYPE_CHIP: 1083 DPRINTF(1, "%s: EEPROM chip len=%d\n", 1084 device_xname(sc->sc_dev), option_len); 1085 break; 1086 case UPGT_EEPROM_TYPE_FREQ3: 1087 DPRINTF(1, "%s: EEPROM freq3 len=%d\n", 1088 device_xname(sc->sc_dev), option_len); 1089 1090 upgt_eeprom_parse_freq3(sc, eeprom_option->data, 1091 option_len); 1092 break; 1093 case UPGT_EEPROM_TYPE_FREQ4: 1094 DPRINTF(1, "%s: EEPROM freq4 len=%d\n", 1095 device_xname(sc->sc_dev), option_len); 1096 1097 upgt_eeprom_parse_freq4(sc, eeprom_option->data, 1098 option_len); 1099 break; 1100 case UPGT_EEPROM_TYPE_FREQ5: 1101 DPRINTF(1, "%s: EEPROM freq5 len=%d\n", 1102 device_xname(sc->sc_dev), option_len); 1103 break; 1104 case UPGT_EEPROM_TYPE_FREQ6: 1105 DPRINTF(1, "%s: EEPROM freq6 len=%d\n", 1106 device_xname(sc->sc_dev), option_len); 1107 1108 upgt_eeprom_parse_freq6(sc, eeprom_option->data, 1109 option_len); 1110 break; 1111 case UPGT_EEPROM_TYPE_END: 1112 DPRINTF(1, "%s: EEPROM end len=%d\n", 1113 device_xname(sc->sc_dev), option_len); 1114 option_end = 1; 1115 break; 1116 case UPGT_EEPROM_TYPE_OFF: 1117 DPRINTF(1, "%s: EEPROM off without end option\n", 1118 device_xname(sc->sc_dev)); 1119 return EIO; 1120 default: 1121 DPRINTF(1, "%s: EEPROM unknown type 0x%04x len=%d\n", 1122 device_xname(sc->sc_dev), option_type, option_len); 1123 break; 1124 } 1125 1126 /* jump to next EEPROM option */ 1127 eeprom_option = (struct upgt_eeprom_option *) 1128 (eeprom_option->data + option_len); 1129 } 1130 1131 return 0; 1132 } 1133 1134 static void 1135 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data) 1136 { 1137 struct upgt_eeprom_option_hwrx *option_hwrx; 1138 1139 option_hwrx = (struct upgt_eeprom_option_hwrx *)data; 1140 1141 sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST; 1142 1143 DPRINTF(2, "%s: hwrx option value=0x%04x\n", 1144 device_xname(sc->sc_dev), sc->sc_eeprom_hwrx); 1145 } 1146 1147 static void 1148 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len) 1149 { 1150 struct upgt_eeprom_freq3_header *freq3_header; 1151 struct upgt_lmac_freq3 *freq3; 1152 int i, elements, flags; 1153 unsigned channel; 1154 1155 freq3_header = (struct upgt_eeprom_freq3_header *)data; 1156 freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1); 1157 1158 flags = freq3_header->flags; 1159 elements = freq3_header->elements; 1160 1161 DPRINTF(2, "%s: flags=0x%02x\n", device_xname(sc->sc_dev), flags); 1162 DPRINTF(2, "%s: elements=%d\n", device_xname(sc->sc_dev), elements); 1163 __USE(flags); 1164 1165 for (i = 0; i < elements; i++) { 1166 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0); 1167 1168 sc->sc_eeprom_freq3[channel] = freq3[i]; 1169 1170 DPRINTF(2, "%s: frequence=%d, channel=%d\n", 1171 device_xname(sc->sc_dev), 1172 le16toh(sc->sc_eeprom_freq3[channel].freq), channel); 1173 } 1174 } 1175 1176 static void 1177 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len) 1178 { 1179 struct upgt_eeprom_freq4_header *freq4_header; 1180 struct upgt_eeprom_freq4_1 *freq4_1; 1181 struct upgt_eeprom_freq4_2 *freq4_2; 1182 int i, j, elements, settings, flags; 1183 unsigned channel; 1184 1185 freq4_header = (struct upgt_eeprom_freq4_header *)data; 1186 freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1); 1187 1188 flags = freq4_header->flags; 1189 elements = freq4_header->elements; 1190 settings = freq4_header->settings; 1191 1192 /* we need this value later */ 1193 sc->sc_eeprom_freq6_settings = freq4_header->settings; 1194 1195 DPRINTF(2, "%s: flags=0x%02x\n", device_xname(sc->sc_dev), flags); 1196 DPRINTF(2, "%s: elements=%d\n", device_xname(sc->sc_dev), elements); 1197 DPRINTF(2, "%s: settings=%d\n", device_xname(sc->sc_dev), settings); 1198 __USE(flags); 1199 1200 for (i = 0; i < elements; i++) { 1201 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0); 1202 1203 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data; 1204 1205 for (j = 0; j < settings; j++) { 1206 sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j]; 1207 sc->sc_eeprom_freq4[channel][j].pad = 0; 1208 } 1209 1210 DPRINTF(2, "%s: frequence=%d, channel=%d\n", 1211 device_xname(sc->sc_dev), 1212 le16toh(freq4_1[i].freq), channel); 1213 } 1214 } 1215 1216 static void 1217 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len) 1218 { 1219 struct upgt_lmac_freq6 *freq6; 1220 int i, elements; 1221 unsigned channel; 1222 1223 freq6 = (struct upgt_lmac_freq6 *)data; 1224 1225 elements = len / sizeof(struct upgt_lmac_freq6); 1226 1227 DPRINTF(2, "%s: elements=%d\n", device_xname(sc->sc_dev), elements); 1228 1229 for (i = 0; i < elements; i++) { 1230 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0); 1231 1232 sc->sc_eeprom_freq6[channel] = freq6[i]; 1233 1234 DPRINTF(2, "%s: frequence=%d, channel=%d\n", 1235 device_xname(sc->sc_dev), 1236 le16toh(sc->sc_eeprom_freq6[channel].freq), channel); 1237 } 1238 } 1239 1240 static int 1241 upgt_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1242 { 1243 struct upgt_softc *sc = ifp->if_softc; 1244 struct ieee80211com *ic = &sc->sc_ic; 1245 int s, error = 0; 1246 1247 s = splnet(); 1248 1249 switch (cmd) { 1250 case SIOCSIFFLAGS: 1251 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1252 break; 1253 if (ifp->if_flags & IFF_UP) { 1254 if ((ifp->if_flags & IFF_RUNNING) == 0) 1255 upgt_init(ifp); 1256 } else { 1257 if (ifp->if_flags & IFF_RUNNING) 1258 upgt_stop(sc); 1259 } 1260 break; 1261 case SIOCADDMULTI: 1262 case SIOCDELMULTI: 1263 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1264 /* setup multicast filter, etc */ 1265 error = 0; 1266 } 1267 break; 1268 default: 1269 error = ieee80211_ioctl(ic, cmd, data); 1270 break; 1271 } 1272 1273 if (error == ENETRESET) { 1274 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1275 (IFF_UP | IFF_RUNNING)) 1276 upgt_init(ifp); 1277 error = 0; 1278 } 1279 1280 splx(s); 1281 1282 return error; 1283 } 1284 1285 static int 1286 upgt_init(struct ifnet *ifp) 1287 { 1288 struct upgt_softc *sc = ifp->if_softc; 1289 struct ieee80211com *ic = &sc->sc_ic; 1290 1291 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1292 1293 if (ifp->if_flags & IFF_RUNNING) 1294 upgt_stop(sc); 1295 1296 ifp->if_flags |= IFF_RUNNING; 1297 ifp->if_flags &= ~IFF_OACTIVE; 1298 1299 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 1300 1301 /* setup device rates */ 1302 upgt_setup_rates(sc); 1303 1304 if (ic->ic_opmode == IEEE80211_M_MONITOR) 1305 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1306 else 1307 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 1308 1309 return 0; 1310 } 1311 1312 static void 1313 upgt_stop(struct upgt_softc *sc) 1314 { 1315 struct ieee80211com *ic = &sc->sc_ic; 1316 struct ifnet *ifp = &sc->sc_if; 1317 1318 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1319 1320 /* device down */ 1321 ifp->if_timer = 0; 1322 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1323 1324 /* change device back to initial state */ 1325 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 1326 } 1327 1328 static int 1329 upgt_media_change(struct ifnet *ifp) 1330 { 1331 struct upgt_softc *sc = ifp->if_softc; 1332 int error; 1333 1334 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1335 1336 if ((error = ieee80211_media_change(ifp)) != ENETRESET) 1337 return error; 1338 1339 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1340 (IFF_UP | IFF_RUNNING)) { 1341 /* give pending USB transfers a chance to finish */ 1342 usbd_delay_ms(sc->sc_udev, 100); 1343 upgt_init(ifp); 1344 } 1345 1346 return 0; 1347 } 1348 1349 static void 1350 upgt_newassoc(struct ieee80211_node *ni, int isnew) 1351 { 1352 1353 ni->ni_txrate = 0; 1354 } 1355 1356 static int 1357 upgt_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1358 { 1359 struct upgt_softc *sc = ic->ic_ifp->if_softc; 1360 1361 /* 1362 * XXXSMP: This does not wait for the task, if it is in flight, 1363 * to complete. If this code works at all, it must rely on the 1364 * kernel lock to serialize with the USB task thread. 1365 */ 1366 usb_rem_task(sc->sc_udev, &sc->sc_task_newstate); 1367 callout_stop(&sc->scan_to); 1368 1369 /* do it in a process context */ 1370 sc->sc_state = nstate; 1371 sc->sc_arg = arg; 1372 usb_add_task(sc->sc_udev, &sc->sc_task_newstate, USB_TASKQ_DRIVER); 1373 1374 return 0; 1375 } 1376 1377 static void 1378 upgt_newstate_task(void *arg) 1379 { 1380 struct upgt_softc *sc = arg; 1381 struct ieee80211com *ic = &sc->sc_ic; 1382 struct ieee80211_node *ni; 1383 unsigned channel; 1384 1385 mutex_enter(&sc->sc_mtx); 1386 1387 switch (sc->sc_state) { 1388 case IEEE80211_S_INIT: 1389 DPRINTF(1, "%s: newstate is IEEE80211_S_INIT\n", 1390 device_xname(sc->sc_dev)); 1391 1392 /* do not accept any frames if the device is down */ 1393 upgt_set_macfilter(sc, IEEE80211_S_INIT); 1394 upgt_set_led(sc, UPGT_LED_OFF); 1395 break; 1396 case IEEE80211_S_SCAN: 1397 DPRINTF(1, "%s: newstate is IEEE80211_S_SCAN\n", 1398 device_xname(sc->sc_dev)); 1399 1400 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1401 upgt_set_channel(sc, channel); 1402 upgt_set_macfilter(sc, IEEE80211_S_SCAN); 1403 callout_schedule(&sc->scan_to, hz / 5); 1404 break; 1405 case IEEE80211_S_AUTH: 1406 DPRINTF(1, "%s: newstate is IEEE80211_S_AUTH\n", 1407 device_xname(sc->sc_dev)); 1408 1409 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1410 upgt_set_channel(sc, channel); 1411 break; 1412 case IEEE80211_S_ASSOC: 1413 DPRINTF(1, "%s: newstate is IEEE80211_S_ASSOC\n", 1414 device_xname(sc->sc_dev)); 1415 1416 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1417 upgt_set_channel(sc, channel); 1418 break; 1419 case IEEE80211_S_RUN: 1420 DPRINTF(1, "%s: newstate is IEEE80211_S_RUN\n", 1421 device_xname(sc->sc_dev)); 1422 1423 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1424 upgt_set_channel(sc, channel); 1425 1426 ni = ic->ic_bss; 1427 1428 /* 1429 * TX rate control is done by the firmware. 1430 * Report the maximum rate which is available therefore. 1431 */ 1432 ni->ni_txrate = ni->ni_rates.rs_nrates - 1; 1433 1434 if (ic->ic_opmode != IEEE80211_M_MONITOR) 1435 upgt_set_macfilter(sc, IEEE80211_S_RUN); 1436 upgt_set_led(sc, UPGT_LED_ON); 1437 break; 1438 } 1439 1440 mutex_exit(&sc->sc_mtx); 1441 1442 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 1443 } 1444 1445 static void 1446 upgt_next_scan(void *arg) 1447 { 1448 struct upgt_softc *sc = arg; 1449 struct ieee80211com *ic = &sc->sc_ic; 1450 1451 DPRINTF(2, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1452 1453 if (ic->ic_state == IEEE80211_S_SCAN) 1454 ieee80211_next_scan(ic); 1455 } 1456 1457 static void 1458 upgt_start(struct ifnet *ifp) 1459 { 1460 struct upgt_softc *sc = ifp->if_softc; 1461 struct ieee80211com *ic = &sc->sc_ic; 1462 struct ether_header *eh; 1463 struct ieee80211_node *ni; 1464 struct mbuf *m; 1465 int i; 1466 1467 /* don't transmit packets if interface is busy or down */ 1468 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1469 return; 1470 1471 DPRINTF(2, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1472 1473 for (i = 0; i < UPGT_TX_COUNT; i++) { 1474 struct upgt_data *data_tx = &sc->tx_data[i]; 1475 1476 if (data_tx->m != NULL) 1477 continue; 1478 1479 IF_POLL(&ic->ic_mgtq, m); 1480 if (m != NULL) { 1481 /* management frame */ 1482 IF_DEQUEUE(&ic->ic_mgtq, m); 1483 1484 ni = M_GETCTX(m, struct ieee80211_node *); 1485 M_CLEARCTX(m); 1486 1487 bpf_mtap3(ic->ic_rawbpf, m, BPF_D_OUT); 1488 1489 if ((data_tx->addr = upgt_mem_alloc(sc)) == 0) { 1490 aprint_error_dev(sc->sc_dev, 1491 "no free prism memory\n"); 1492 m_freem(m); 1493 if_statinc(ifp, if_oerrors); 1494 break; 1495 } 1496 data_tx->ni = ni; 1497 data_tx->m = m; 1498 sc->tx_queued++; 1499 } else { 1500 /* data frame */ 1501 if (ic->ic_state != IEEE80211_S_RUN) 1502 break; 1503 1504 IFQ_POLL(&ifp->if_snd, m); 1505 if (m == NULL) 1506 break; 1507 1508 IFQ_DEQUEUE(&ifp->if_snd, m); 1509 if (m->m_len < sizeof(struct ether_header) && 1510 !(m = m_pullup(m, sizeof(struct ether_header)))) 1511 continue; 1512 1513 eh = mtod(m, struct ether_header *); 1514 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1515 if (ni == NULL) { 1516 m_freem(m); 1517 continue; 1518 } 1519 1520 bpf_mtap(ifp, m, BPF_D_OUT); 1521 1522 m = ieee80211_encap(ic, m, ni); 1523 if (m == NULL) { 1524 ieee80211_free_node(ni); 1525 continue; 1526 } 1527 1528 bpf_mtap3(ic->ic_rawbpf, m, BPF_D_OUT); 1529 1530 if ((data_tx->addr = upgt_mem_alloc(sc)) == 0) { 1531 aprint_error_dev(sc->sc_dev, 1532 "no free prism memory\n"); 1533 m_freem(m); 1534 ieee80211_free_node(ni); 1535 if_statinc(ifp, if_oerrors); 1536 break; 1537 } 1538 data_tx->ni = ni; 1539 data_tx->m = m; 1540 sc->tx_queued++; 1541 } 1542 } 1543 1544 if (sc->tx_queued > 0) { 1545 DPRINTF(2, "%s: tx_queued=%d\n", 1546 device_xname(sc->sc_dev), sc->tx_queued); 1547 /* process the TX queue in process context */ 1548 ifp->if_timer = 5; 1549 ifp->if_flags |= IFF_OACTIVE; 1550 usb_rem_task(sc->sc_udev, &sc->sc_task_tx); 1551 usb_add_task(sc->sc_udev, &sc->sc_task_tx, USB_TASKQ_DRIVER); 1552 } 1553 } 1554 1555 static void 1556 upgt_watchdog(struct ifnet *ifp) 1557 { 1558 struct upgt_softc *sc = ifp->if_softc; 1559 struct ieee80211com *ic = &sc->sc_ic; 1560 1561 if (ic->ic_state == IEEE80211_S_INIT) 1562 return; 1563 1564 aprint_error_dev(sc->sc_dev, "watchdog timeout\n"); 1565 1566 /* TODO: what shall we do on TX timeout? */ 1567 1568 ieee80211_watchdog(ic); 1569 } 1570 1571 static void 1572 upgt_tx_task(void *arg) 1573 { 1574 struct upgt_softc *sc = arg; 1575 struct ieee80211com *ic = &sc->sc_ic; 1576 struct ieee80211_frame *wh; 1577 struct ieee80211_key *k; 1578 struct ifnet *ifp = &sc->sc_if; 1579 struct upgt_lmac_mem *mem; 1580 struct upgt_lmac_tx_desc *txdesc; 1581 struct mbuf *m; 1582 uint32_t addr; 1583 int i, len, pad, s; 1584 usbd_status error; 1585 1586 mutex_enter(&sc->sc_mtx); 1587 upgt_set_led(sc, UPGT_LED_BLINK); 1588 mutex_exit(&sc->sc_mtx); 1589 1590 s = splnet(); 1591 1592 for (i = 0; i < UPGT_TX_COUNT; i++) { 1593 struct upgt_data *data_tx = &sc->tx_data[i]; 1594 1595 if (data_tx->m == NULL) 1596 continue; 1597 1598 m = data_tx->m; 1599 addr = data_tx->addr + UPGT_MEMSIZE_FRAME_HEAD; 1600 1601 /* 1602 * Software crypto. 1603 */ 1604 wh = mtod(m, struct ieee80211_frame *); 1605 1606 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1607 k = ieee80211_crypto_encap(ic, data_tx->ni, m); 1608 if (k == NULL) { 1609 m_freem(m); 1610 data_tx->m = NULL; 1611 ieee80211_free_node(data_tx->ni); 1612 data_tx->ni = NULL; 1613 if_statinc(ifp, if_oerrors); 1614 break; 1615 } 1616 1617 /* in case packet header moved, reset pointer */ 1618 wh = mtod(m, struct ieee80211_frame *); 1619 } 1620 1621 /* 1622 * Transmit the URB containing the TX data. 1623 */ 1624 memset(data_tx->buf, 0, sizeof(*mem) + sizeof(*txdesc)); 1625 1626 mem = (struct upgt_lmac_mem *)data_tx->buf; 1627 mem->addr = htole32(addr); 1628 1629 txdesc = (struct upgt_lmac_tx_desc *)(mem + 1); 1630 1631 /* XXX differ between data and mgmt frames? */ 1632 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA; 1633 txdesc->header1.type = UPGT_H1_TYPE_TX_DATA; 1634 txdesc->header1.len = htole16(m->m_pkthdr.len); 1635 1636 txdesc->header2.reqid = htole32(data_tx->addr); 1637 txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES); 1638 txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES); 1639 1640 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1641 IEEE80211_FC0_TYPE_MGT) { 1642 /* always send mgmt frames at lowest rate (DS1) */ 1643 memset(txdesc->rates, 0x10, sizeof(txdesc->rates)); 1644 } else { 1645 memcpy(txdesc->rates, sc->sc_cur_rateset, 1646 sizeof(txdesc->rates)); 1647 } 1648 txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA); 1649 txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE; 1650 1651 if (sc->sc_drvbpf != NULL) { 1652 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap; 1653 1654 tap->wt_flags = 0; 1655 tap->wt_rate = 0; /* TODO: where to get from? */ 1656 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1657 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1658 1659 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m, 1660 BPF_D_OUT); 1661 } 1662 1663 /* copy frame below our TX descriptor header */ 1664 m_copydata(m, 0, m->m_pkthdr.len, 1665 data_tx->buf + sizeof(*mem) + sizeof(*txdesc)); 1666 1667 /* calculate frame size */ 1668 len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len; 1669 1670 if (len & 3) { 1671 /* we need to align the frame to a 4 byte boundary */ 1672 pad = 4 - (len & 3); 1673 memset(data_tx->buf + len, 0, pad); 1674 len += pad; 1675 } 1676 1677 /* calculate frame checksum */ 1678 mem->chksum = upgt_chksum_le((uint32_t *)txdesc, 1679 len - sizeof(*mem)); 1680 1681 /* we do not need the mbuf anymore */ 1682 m_freem(m); 1683 data_tx->m = NULL; 1684 1685 ieee80211_free_node(data_tx->ni); 1686 data_tx->ni = NULL; 1687 1688 DPRINTF(2, "%s: TX start data sending\n", 1689 device_xname(sc->sc_dev)); 1690 1691 usbd_setup_xfer(data_tx->xfer, data_tx, data_tx->buf, len, 1692 USBD_FORCE_SHORT_XFER, UPGT_USB_TIMEOUT, NULL); 1693 error = usbd_transfer(data_tx->xfer); 1694 if (error != USBD_NORMAL_COMPLETION && 1695 error != USBD_IN_PROGRESS) { 1696 aprint_error_dev(sc->sc_dev, 1697 "could not transmit TX data URB\n"); 1698 if_statinc(ifp, if_oerrors); 1699 break; 1700 } 1701 1702 DPRINTF(2, "%s: TX sent (%d bytes)\n", 1703 device_xname(sc->sc_dev), len); 1704 } 1705 1706 splx(s); 1707 1708 /* 1709 * If we don't regulary read the device statistics, the RX queue 1710 * will stall. It's strange, but it works, so we keep reading 1711 * the statistics here. *shrug* 1712 */ 1713 mutex_enter(&sc->sc_mtx); 1714 upgt_get_stats(sc); 1715 mutex_exit(&sc->sc_mtx); 1716 } 1717 1718 static void 1719 upgt_tx_done(struct upgt_softc *sc, uint8_t *data) 1720 { 1721 struct ifnet *ifp = &sc->sc_if; 1722 struct upgt_lmac_tx_done_desc *desc; 1723 int i, s; 1724 1725 s = splnet(); 1726 1727 desc = (struct upgt_lmac_tx_done_desc *)data; 1728 1729 for (i = 0; i < UPGT_TX_COUNT; i++) { 1730 struct upgt_data *data_tx = &sc->tx_data[i]; 1731 1732 if (data_tx->addr == le32toh(desc->header2.reqid)) { 1733 upgt_mem_free(sc, data_tx->addr); 1734 data_tx->addr = 0; 1735 1736 sc->tx_queued--; 1737 if_statinc(ifp, if_opackets); 1738 1739 DPRINTF(2, "%s: TX done: ", device_xname(sc->sc_dev)); 1740 DPRINTF(2, "memaddr=0x%08x, status=0x%04x, rssi=%d, ", 1741 le32toh(desc->header2.reqid), 1742 le16toh(desc->status), 1743 le16toh(desc->rssi)); 1744 DPRINTF(2, "seq=%d\n", le16toh(desc->seq)); 1745 break; 1746 } 1747 } 1748 1749 if (sc->tx_queued == 0) { 1750 /* TX queued was processed, continue */ 1751 ifp->if_timer = 0; 1752 ifp->if_flags &= ~IFF_OACTIVE; 1753 upgt_start(ifp); 1754 } 1755 1756 splx(s); 1757 } 1758 1759 static void 1760 upgt_rx_cb(struct usbd_xfer *xfer, void * priv, usbd_status status) 1761 { 1762 struct upgt_data *data_rx = priv; 1763 struct upgt_softc *sc = data_rx->sc; 1764 int len; 1765 struct upgt_lmac_header *header; 1766 struct upgt_lmac_eeprom *eeprom; 1767 uint8_t h1_type; 1768 uint16_t h2_type; 1769 1770 DPRINTF(3, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1771 1772 if (status != USBD_NORMAL_COMPLETION) { 1773 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 1774 return; 1775 if (status == USBD_STALLED) 1776 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 1777 goto skip; 1778 } 1779 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 1780 1781 /* 1782 * Check what type of frame came in. 1783 */ 1784 header = (struct upgt_lmac_header *)(data_rx->buf + 4); 1785 1786 h1_type = header->header1.type; 1787 h2_type = le16toh(header->header2.type); 1788 1789 if (h1_type == UPGT_H1_TYPE_CTRL && 1790 h2_type == UPGT_H2_TYPE_EEPROM) { 1791 eeprom = (struct upgt_lmac_eeprom *)(data_rx->buf + 4); 1792 uint16_t eeprom_offset = le16toh(eeprom->offset); 1793 uint16_t eeprom_len = le16toh(eeprom->len); 1794 1795 DPRINTF(2, "%s: received EEPROM block (offset=%d, len=%d)\n", 1796 device_xname(sc->sc_dev), eeprom_offset, eeprom_len); 1797 1798 mutex_enter(&sc->sc_mtx); 1799 memcpy(sc->sc_eeprom + eeprom_offset, 1800 data_rx->buf + sizeof(struct upgt_lmac_eeprom) + 4, 1801 eeprom_len); 1802 1803 /* EEPROM data has arrived in time, wakeup upgt_eeprom_read */ 1804 /* Note eeprom data arrived */ 1805 cv_broadcast(&sc->sc_cv); 1806 mutex_exit(&sc->sc_mtx); 1807 } else 1808 if (h1_type == UPGT_H1_TYPE_CTRL && 1809 h2_type == UPGT_H2_TYPE_TX_DONE) { 1810 DPRINTF(2, "%s: received 802.11 TX done\n", 1811 device_xname(sc->sc_dev)); 1812 1813 upgt_tx_done(sc, data_rx->buf + 4); 1814 } else 1815 if (h1_type == UPGT_H1_TYPE_RX_DATA || 1816 h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) { 1817 DPRINTF(3, "%s: received 802.11 RX data\n", 1818 device_xname(sc->sc_dev)); 1819 1820 upgt_rx(sc, data_rx->buf + 4, le16toh(header->header1.len)); 1821 } else 1822 if (h1_type == UPGT_H1_TYPE_CTRL && 1823 h2_type == UPGT_H2_TYPE_STATS) { 1824 DPRINTF(2, "%s: received statistic data\n", 1825 device_xname(sc->sc_dev)); 1826 1827 /* TODO: what could we do with the statistic data? */ 1828 } else { 1829 /* ignore unknown frame types */ 1830 DPRINTF(1, "%s: received unknown frame type 0x%02x\n", 1831 device_xname(sc->sc_dev), header->header1.type); 1832 } 1833 1834 skip: /* setup new transfer */ 1835 usbd_setup_xfer(xfer, data_rx, data_rx->buf, MCLBYTES, 1836 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, upgt_rx_cb); 1837 (void)usbd_transfer(xfer); 1838 } 1839 1840 static void 1841 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen) 1842 { 1843 struct ieee80211com *ic = &sc->sc_ic; 1844 struct ifnet *ifp = &sc->sc_if; 1845 struct upgt_lmac_rx_desc *rxdesc; 1846 struct ieee80211_frame *wh; 1847 struct ieee80211_node *ni; 1848 struct mbuf *m; 1849 int s; 1850 1851 /* access RX packet descriptor */ 1852 rxdesc = (struct upgt_lmac_rx_desc *)data; 1853 1854 /* create mbuf which is suitable for strict alignment archs */ 1855 m = m_devget(rxdesc->data, pkglen, 0, ifp); 1856 if (m == NULL) { 1857 DPRINTF(1, "%s: could not create RX mbuf\n", 1858 device_xname(sc->sc_dev)); 1859 if_statinc(ifp, if_ierrors); 1860 return; 1861 } 1862 1863 s = splnet(); 1864 1865 if (sc->sc_drvbpf != NULL) { 1866 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap; 1867 1868 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 1869 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate); 1870 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 1871 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 1872 tap->wr_antsignal = rxdesc->rssi; 1873 1874 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m, BPF_D_IN); 1875 } 1876 1877 /* trim FCS */ 1878 m_adj(m, -IEEE80211_CRC_LEN); 1879 1880 wh = mtod(m, struct ieee80211_frame *); 1881 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1882 1883 /* push the frame up to the 802.11 stack */ 1884 ieee80211_input(ic, m, ni, rxdesc->rssi, 0); 1885 1886 /* node is no longer needed */ 1887 ieee80211_free_node(ni); 1888 1889 splx(s); 1890 1891 DPRINTF(3, "%s: RX done\n", device_xname(sc->sc_dev)); 1892 } 1893 1894 static void 1895 upgt_setup_rates(struct upgt_softc *sc) 1896 { 1897 struct ieee80211com *ic = &sc->sc_ic; 1898 1899 /* 1900 * 0x01 = OFMD6 0x10 = DS1 1901 * 0x04 = OFDM9 0x11 = DS2 1902 * 0x06 = OFDM12 0x12 = DS5 1903 * 0x07 = OFDM18 0x13 = DS11 1904 * 0x08 = OFDM24 1905 * 0x09 = OFDM36 1906 * 0x0a = OFDM48 1907 * 0x0b = OFDM54 1908 */ 1909 const uint8_t rateset_auto_11b[] = 1910 { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 }; 1911 const uint8_t rateset_auto_11g[] = 1912 { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 }; 1913 const uint8_t rateset_fix_11bg[] = 1914 { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07, 1915 0x08, 0x09, 0x0a, 0x0b }; 1916 1917 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) { 1918 /* 1919 * Automatic rate control is done by the device. 1920 * We just pass the rateset from which the device 1921 * will pickup a rate. 1922 */ 1923 if (ic->ic_curmode == IEEE80211_MODE_11B) 1924 memcpy(sc->sc_cur_rateset, rateset_auto_11b, 1925 sizeof(sc->sc_cur_rateset)); 1926 if (ic->ic_curmode == IEEE80211_MODE_11G || 1927 ic->ic_curmode == IEEE80211_MODE_AUTO) 1928 memcpy(sc->sc_cur_rateset, rateset_auto_11g, 1929 sizeof(sc->sc_cur_rateset)); 1930 } else { 1931 /* set a fixed rate */ 1932 memset(sc->sc_cur_rateset, rateset_fix_11bg[ic->ic_fixed_rate], 1933 sizeof(sc->sc_cur_rateset)); 1934 } 1935 } 1936 1937 static uint8_t 1938 upgt_rx_rate(struct upgt_softc *sc, const int rate) 1939 { 1940 struct ieee80211com *ic = &sc->sc_ic; 1941 1942 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1943 if (rate < 0 || rate > 3) 1944 /* invalid rate */ 1945 return 0; 1946 1947 switch (rate) { 1948 case 0: 1949 return 2; 1950 case 1: 1951 return 4; 1952 case 2: 1953 return 11; 1954 case 3: 1955 return 22; 1956 default: 1957 return 0; 1958 } 1959 } 1960 1961 if (ic->ic_curmode == IEEE80211_MODE_11G) { 1962 if (rate < 0 || rate > 11) 1963 /* invalid rate */ 1964 return 0; 1965 1966 switch (rate) { 1967 case 0: 1968 return 2; 1969 case 1: 1970 return 4; 1971 case 2: 1972 return 11; 1973 case 3: 1974 return 22; 1975 case 4: 1976 return 12; 1977 case 5: 1978 return 18; 1979 case 6: 1980 return 24; 1981 case 7: 1982 return 36; 1983 case 8: 1984 return 48; 1985 case 9: 1986 return 72; 1987 case 10: 1988 return 96; 1989 case 11: 1990 return 108; 1991 default: 1992 return 0; 1993 } 1994 } 1995 1996 return 0; 1997 } 1998 1999 static int 2000 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state) 2001 { 2002 struct ieee80211com *ic = &sc->sc_ic; 2003 struct ieee80211_node *ni = ic->ic_bss; 2004 struct upgt_data *data_cmd = &sc->cmd_data; 2005 struct upgt_lmac_mem *mem; 2006 struct upgt_lmac_filter *filter; 2007 int len; 2008 const uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 2009 2010 /* 2011 * Transmit the URB containing the CMD data. 2012 */ 2013 len = sizeof(*mem) + sizeof(*filter); 2014 2015 memset(data_cmd->buf, 0, len); 2016 2017 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2018 mem->addr = htole32(sc->sc_memaddr_frame_start + 2019 UPGT_MEMSIZE_FRAME_HEAD); 2020 2021 filter = (struct upgt_lmac_filter *)(mem + 1); 2022 2023 filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK; 2024 filter->header1.type = UPGT_H1_TYPE_CTRL; 2025 filter->header1.len = htole16( 2026 sizeof(struct upgt_lmac_filter) - 2027 sizeof(struct upgt_lmac_header)); 2028 2029 filter->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2030 filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER); 2031 filter->header2.flags = 0; 2032 2033 switch (state) { 2034 case IEEE80211_S_INIT: 2035 DPRINTF(1, "%s: set MAC filter to INIT\n", 2036 device_xname(sc->sc_dev)); 2037 2038 filter->type = htole16(UPGT_FILTER_TYPE_RESET); 2039 break; 2040 case IEEE80211_S_SCAN: 2041 DPRINTF(1, "%s: set MAC filter to SCAN (bssid %s)\n", 2042 device_xname(sc->sc_dev), ether_sprintf(broadcast)); 2043 2044 filter->type = htole16(UPGT_FILTER_TYPE_NONE); 2045 IEEE80211_ADDR_COPY(filter->dst, ic->ic_myaddr); 2046 IEEE80211_ADDR_COPY(filter->src, broadcast); 2047 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1); 2048 filter->rxaddr = htole32(sc->sc_memaddr_rx_start); 2049 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2); 2050 filter->rxhw = htole32(sc->sc_eeprom_hwrx); 2051 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3); 2052 break; 2053 case IEEE80211_S_RUN: 2054 DPRINTF(1, "%s: set MAC filter to RUN (bssid %s)\n", 2055 device_xname(sc->sc_dev), ether_sprintf(ni->ni_bssid)); 2056 2057 filter->type = htole16(UPGT_FILTER_TYPE_STA); 2058 IEEE80211_ADDR_COPY(filter->dst, ic->ic_myaddr); 2059 IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid); 2060 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1); 2061 filter->rxaddr = htole32(sc->sc_memaddr_rx_start); 2062 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2); 2063 filter->rxhw = htole32(sc->sc_eeprom_hwrx); 2064 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3); 2065 break; 2066 default: 2067 aprint_error_dev(sc->sc_dev, 2068 "MAC filter does not know that state\n"); 2069 break; 2070 } 2071 2072 mem->chksum = upgt_chksum_le((uint32_t *)filter, sizeof(*filter)); 2073 2074 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2075 aprint_error_dev(sc->sc_dev, 2076 "could not transmit macfilter CMD data URB\n"); 2077 return EIO; 2078 } 2079 2080 return 0; 2081 } 2082 2083 static int 2084 upgt_set_channel(struct upgt_softc *sc, unsigned channel) 2085 { 2086 struct upgt_data *data_cmd = &sc->cmd_data; 2087 struct upgt_lmac_mem *mem; 2088 struct upgt_lmac_channel *chan; 2089 int len; 2090 2091 DPRINTF(1, "%s: %s: %d\n", device_xname(sc->sc_dev), __func__, 2092 channel); 2093 2094 /* 2095 * Transmit the URB containing the CMD data. 2096 */ 2097 len = sizeof(*mem) + sizeof(*chan); 2098 2099 memset(data_cmd->buf, 0, len); 2100 2101 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2102 mem->addr = htole32(sc->sc_memaddr_frame_start + 2103 UPGT_MEMSIZE_FRAME_HEAD); 2104 2105 chan = (struct upgt_lmac_channel *)(mem + 1); 2106 2107 chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK; 2108 chan->header1.type = UPGT_H1_TYPE_CTRL; 2109 chan->header1.len = htole16( 2110 sizeof(struct upgt_lmac_channel) - 2111 sizeof(struct upgt_lmac_header)); 2112 2113 chan->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2114 chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL); 2115 chan->header2.flags = 0; 2116 2117 chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1); 2118 chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2); 2119 chan->freq6 = sc->sc_eeprom_freq6[channel]; 2120 chan->settings = sc->sc_eeprom_freq6_settings; 2121 chan->unknown3 = UPGT_CHANNEL_UNKNOWN3; 2122 2123 memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data, 2124 sizeof(chan->freq3_1)); 2125 2126 memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel], 2127 sizeof(sc->sc_eeprom_freq4[channel])); 2128 2129 memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data, 2130 sizeof(chan->freq3_2)); 2131 2132 mem->chksum = upgt_chksum_le((uint32_t *)chan, sizeof(*chan)); 2133 2134 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2135 aprint_error_dev(sc->sc_dev, 2136 "could not transmit channel CMD data URB\n"); 2137 return EIO; 2138 } 2139 2140 return 0; 2141 } 2142 2143 static void 2144 upgt_set_led(struct upgt_softc *sc, int action) 2145 { 2146 struct ieee80211com *ic = &sc->sc_ic; 2147 struct upgt_data *data_cmd = &sc->cmd_data; 2148 struct upgt_lmac_mem *mem; 2149 struct upgt_lmac_led *led; 2150 struct timeval t; 2151 int len; 2152 2153 /* 2154 * Transmit the URB containing the CMD data. 2155 */ 2156 len = sizeof(*mem) + sizeof(*led); 2157 2158 memset(data_cmd->buf, 0, len); 2159 2160 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2161 mem->addr = htole32(sc->sc_memaddr_frame_start + 2162 UPGT_MEMSIZE_FRAME_HEAD); 2163 2164 led = (struct upgt_lmac_led *)(mem + 1); 2165 2166 led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK; 2167 led->header1.type = UPGT_H1_TYPE_CTRL; 2168 led->header1.len = htole16( 2169 sizeof(struct upgt_lmac_led) - 2170 sizeof(struct upgt_lmac_header)); 2171 2172 led->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2173 led->header2.type = htole16(UPGT_H2_TYPE_LED); 2174 led->header2.flags = 0; 2175 2176 switch (action) { 2177 case UPGT_LED_OFF: 2178 led->mode = htole16(UPGT_LED_MODE_SET); 2179 led->action_fix = 0; 2180 led->action_tmp = htole16(UPGT_LED_ACTION_OFF); 2181 led->action_tmp_dur = 0; 2182 break; 2183 case UPGT_LED_ON: 2184 led->mode = htole16(UPGT_LED_MODE_SET); 2185 led->action_fix = 0; 2186 led->action_tmp = htole16(UPGT_LED_ACTION_ON); 2187 led->action_tmp_dur = 0; 2188 break; 2189 case UPGT_LED_BLINK: 2190 if (ic->ic_state != IEEE80211_S_RUN) 2191 return; 2192 if (sc->sc_led_blink) 2193 /* previous blink was not finished */ 2194 return; 2195 led->mode = htole16(UPGT_LED_MODE_SET); 2196 led->action_fix = htole16(UPGT_LED_ACTION_OFF); 2197 led->action_tmp = htole16(UPGT_LED_ACTION_ON); 2198 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR); 2199 /* lock blink */ 2200 sc->sc_led_blink = 1; 2201 t.tv_sec = 0; 2202 t.tv_usec = UPGT_LED_ACTION_TMP_DUR * 1000L; 2203 callout_schedule(&sc->led_to, tvtohz(&t)); 2204 break; 2205 default: 2206 return; 2207 } 2208 2209 mem->chksum = upgt_chksum_le((uint32_t *)led, sizeof(*led)); 2210 2211 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2212 aprint_error_dev(sc->sc_dev, 2213 "could not transmit led CMD URB\n"); 2214 } 2215 } 2216 2217 static void 2218 upgt_set_led_blink(void *arg) 2219 { 2220 struct upgt_softc *sc = arg; 2221 2222 /* blink finished, we are ready for a next one */ 2223 sc->sc_led_blink = 0; 2224 callout_stop(&sc->led_to); 2225 } 2226 2227 static int 2228 upgt_get_stats(struct upgt_softc *sc) 2229 { 2230 struct upgt_data *data_cmd = &sc->cmd_data; 2231 struct upgt_lmac_mem *mem; 2232 struct upgt_lmac_stats *stats; 2233 int len; 2234 2235 /* 2236 * Transmit the URB containing the CMD data. 2237 */ 2238 len = sizeof(*mem) + sizeof(*stats); 2239 2240 memset(data_cmd->buf, 0, len); 2241 2242 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2243 mem->addr = htole32(sc->sc_memaddr_frame_start + 2244 UPGT_MEMSIZE_FRAME_HEAD); 2245 2246 stats = (struct upgt_lmac_stats *)(mem + 1); 2247 2248 stats->header1.flags = 0; 2249 stats->header1.type = UPGT_H1_TYPE_CTRL; 2250 stats->header1.len = htole16( 2251 sizeof(struct upgt_lmac_stats) - 2252 sizeof(struct upgt_lmac_header)); 2253 2254 stats->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2255 stats->header2.type = htole16(UPGT_H2_TYPE_STATS); 2256 stats->header2.flags = 0; 2257 2258 mem->chksum = upgt_chksum_le((uint32_t *)stats, sizeof(*stats)); 2259 2260 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2261 aprint_error_dev(sc->sc_dev, 2262 "could not transmit statistics CMD data URB\n"); 2263 return EIO; 2264 } 2265 2266 return 0; 2267 2268 } 2269 2270 static int 2271 upgt_alloc_tx(struct upgt_softc *sc) 2272 { 2273 int i; 2274 2275 sc->tx_queued = 0; 2276 2277 for (i = 0; i < UPGT_TX_COUNT; i++) { 2278 struct upgt_data *data_tx = &sc->tx_data[i]; 2279 2280 data_tx->sc = sc; 2281 2282 int err = usbd_create_xfer(sc->sc_tx_pipeh, MCLBYTES, 2283 USBD_FORCE_SHORT_XFER, 0, &data_tx->xfer); 2284 if (err) { 2285 aprint_error_dev(sc->sc_dev, 2286 "could not allocate TX xfer\n"); 2287 return err; 2288 } 2289 2290 data_tx->buf = usbd_get_buffer(data_tx->xfer); 2291 } 2292 2293 return 0; 2294 } 2295 2296 static int 2297 upgt_alloc_rx(struct upgt_softc *sc) 2298 { 2299 struct upgt_data *data_rx = &sc->rx_data; 2300 2301 data_rx->sc = sc; 2302 2303 int err = usbd_create_xfer(sc->sc_rx_pipeh, MCLBYTES, 2304 0, 0, &data_rx->xfer); 2305 if (err) { 2306 aprint_error_dev(sc->sc_dev, "could not allocate RX xfer\n"); 2307 return err; 2308 } 2309 2310 data_rx->buf = usbd_get_buffer(data_rx->xfer); 2311 2312 return 0; 2313 } 2314 2315 static int 2316 upgt_alloc_cmd(struct upgt_softc *sc) 2317 { 2318 struct upgt_data *data_cmd = &sc->cmd_data; 2319 2320 data_cmd->sc = sc; 2321 2322 int err = usbd_create_xfer(sc->sc_tx_pipeh, MCLBYTES, 2323 USBD_FORCE_SHORT_XFER, 0, &data_cmd->xfer); 2324 if (err) { 2325 aprint_error_dev(sc->sc_dev, "could not allocate RX xfer\n"); 2326 return err; 2327 } 2328 2329 data_cmd->buf = usbd_get_buffer(data_cmd->xfer); 2330 2331 cv_init(&sc->sc_cv, "upgteeprom"); 2332 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); 2333 2334 return 0; 2335 } 2336 2337 static void 2338 upgt_free_tx(struct upgt_softc *sc) 2339 { 2340 int i; 2341 2342 for (i = 0; i < UPGT_TX_COUNT; i++) { 2343 struct upgt_data *data_tx = &sc->tx_data[i]; 2344 2345 if (data_tx->xfer != NULL) { 2346 usbd_destroy_xfer(data_tx->xfer); 2347 data_tx->xfer = NULL; 2348 } 2349 2350 data_tx->ni = NULL; 2351 } 2352 } 2353 2354 static void 2355 upgt_free_rx(struct upgt_softc *sc) 2356 { 2357 struct upgt_data *data_rx = &sc->rx_data; 2358 2359 if (data_rx->xfer != NULL) { 2360 usbd_destroy_xfer(data_rx->xfer); 2361 data_rx->xfer = NULL; 2362 } 2363 2364 data_rx->ni = NULL; 2365 } 2366 2367 static void 2368 upgt_free_cmd(struct upgt_softc *sc) 2369 { 2370 struct upgt_data *data_cmd = &sc->cmd_data; 2371 2372 if (data_cmd->xfer != NULL) { 2373 usbd_destroy_xfer(data_cmd->xfer); 2374 data_cmd->xfer = NULL; 2375 } 2376 2377 mutex_destroy(&sc->sc_mtx); 2378 cv_destroy(&sc->sc_cv); 2379 } 2380 2381 static int 2382 upgt_bulk_xmit(struct upgt_softc *sc, struct upgt_data *data, 2383 struct usbd_pipe *pipeh, uint32_t *size, int flags) 2384 { 2385 usbd_status status; 2386 2387 status = usbd_bulk_transfer(data->xfer, pipeh, flags, UPGT_USB_TIMEOUT, 2388 data->buf, size); 2389 if (status != USBD_NORMAL_COMPLETION) { 2390 aprint_error_dev(sc->sc_dev, "%s: error %s\n", __func__, 2391 usbd_errstr(status)); 2392 return EIO; 2393 } 2394 2395 return 0; 2396 } 2397 2398 #if 0 2399 static void 2400 upgt_hexdump(void *buf, int len) 2401 { 2402 int i; 2403 2404 for (i = 0; i < len; i++) { 2405 if (i % 16 == 0) 2406 printf("%s%5i:", i ? "\n" : "", i); 2407 if (i % 4 == 0) 2408 printf(" "); 2409 printf("%02x", (int)*((uint8_t *)buf + i)); 2410 } 2411 printf("\n"); 2412 } 2413 #endif 2414 2415 static uint32_t 2416 upgt_crc32_le(const void *buf, size_t size) 2417 { 2418 uint32_t crc; 2419 2420 crc = ether_crc32_le(buf, size); 2421 2422 /* apply final XOR value as common for CRC-32 */ 2423 crc = htole32(crc ^ 0xffffffffU); 2424 2425 return crc; 2426 } 2427 2428 /* 2429 * The firmware awaits a checksum for each frame we send to it. 2430 * The algorithm used is uncommon but somehow similar to CRC32. 2431 */ 2432 static uint32_t 2433 upgt_chksum_le(const uint32_t *buf, size_t size) 2434 { 2435 int i; 2436 uint32_t crc = 0; 2437 2438 for (i = 0; i < size; i += sizeof(uint32_t)) { 2439 crc = htole32(crc ^ *buf++); 2440 crc = htole32((crc >> 5) ^ (crc << 3)); 2441 } 2442 2443 return crc; 2444 } 2445
Indexes created Thu Oct 02 14:10:14 GMT 2025