1 /* $NetBSD: if_upgt.c,v 1.34 2026/08/29 01:59:51 maya 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 1.34 2026/08/29 01:59:51 maya 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 sc->sc_init_state = UPGT_INIT_NONE; 243 244 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 245 aprint_normal_dev(sc->sc_dev, "%s\n", devinfop); 246 usbd_devinfo_free(devinfop); 247 248 /* check device type */ 249 if (upgt_device_type(sc, uaa->uaa_vendor, uaa->uaa_product) != 0) 250 return; 251 252 /* set configuration number */ 253 error = usbd_set_config_no(sc->sc_udev, UPGT_CONFIG_NO, 0); 254 if (error != 0) { 255 aprint_error_dev(sc->sc_dev, "failed to set configuration" 256 ", err=%s\n", usbd_errstr(error)); 257 return; 258 } 259 260 /* get the first interface handle */ 261 error = usbd_device2interface_handle(sc->sc_udev, UPGT_IFACE_INDEX, 262 &sc->sc_iface); 263 if (error != 0) { 264 aprint_error_dev(sc->sc_dev, 265 "could not get interface handle\n"); 266 return; 267 } 268 269 /* find endpoints */ 270 id = usbd_get_interface_descriptor(sc->sc_iface); 271 sc->sc_rx_no = sc->sc_tx_no = -1; 272 for (i = 0; i < id->bNumEndpoints; i++) { 273 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 274 if (ed == NULL) { 275 aprint_error_dev(sc->sc_dev, 276 "no endpoint descriptor for iface %d\n", i); 277 return; 278 } 279 280 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 281 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 282 sc->sc_tx_no = ed->bEndpointAddress; 283 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 284 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 285 sc->sc_rx_no = ed->bEndpointAddress; 286 287 /* 288 * 0x01 TX pipe 289 * 0x81 RX pipe 290 * 291 * Deprecated scheme (not used with fw version >2.5.6.x): 292 * 0x02 TX MGMT pipe 293 * 0x82 TX MGMT pipe 294 */ 295 if (sc->sc_tx_no != -1 && sc->sc_rx_no != -1) 296 break; 297 } 298 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 299 aprint_error_dev(sc->sc_dev, "missing endpoint\n"); 300 return; 301 } 302 303 /* setup tasks and timeouts */ 304 usb_init_task(&sc->sc_task_newstate, upgt_newstate_task, sc, 0); 305 usb_init_task(&sc->sc_task_tx, upgt_tx_task, sc, 0); 306 callout_init(&sc->scan_to, 0); 307 callout_setfunc(&sc->scan_to, upgt_next_scan, sc); 308 callout_init(&sc->led_to, 0); 309 callout_setfunc(&sc->led_to, upgt_set_led_blink, sc); 310 sc->sc_init_state = UPGT_INIT_INITED; 311 312 /* 313 * Open TX and RX USB bulk pipes. 314 */ 315 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 316 &sc->sc_tx_pipeh); 317 if (error != 0) { 318 aprint_error_dev(sc->sc_dev, 319 "could not open TX pipe: %s\n", usbd_errstr(error)); 320 goto fail; 321 } 322 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 323 &sc->sc_rx_pipeh); 324 if (error != 0) { 325 aprint_error_dev(sc->sc_dev, "could not open RX pipe: %s\n", 326 usbd_errstr(error)); 327 goto fail; 328 } 329 330 /* 331 * Allocate TX, RX, and CMD xfers. 332 */ 333 if (upgt_alloc_tx(sc) != 0) 334 goto fail; 335 if (upgt_alloc_rx(sc) != 0) 336 goto fail; 337 if (upgt_alloc_cmd(sc) != 0) 338 goto fail; 339 340 /* 341 * We need the firmware loaded from file system to complete the attach. 342 */ 343 config_mountroot(self, upgt_attach_hook); 344 345 return; 346 fail: 347 aprint_error_dev(sc->sc_dev, "%s failed\n", __func__); 348 } 349 350 static void 351 upgt_attach_hook(device_t arg) 352 { 353 struct upgt_softc *sc = device_private(arg); 354 struct ieee80211com *ic = &sc->sc_ic; 355 struct ifnet *ifp = &sc->sc_if; 356 usbd_status error; 357 int i; 358 359 /* 360 * Load firmware file into memory. 361 */ 362 if (upgt_fw_alloc(sc) != 0) 363 goto fail; 364 365 /* 366 * Initialize the device. 367 */ 368 if (upgt_device_init(sc) != 0) 369 goto fail; 370 371 /* 372 * Verify the firmware. 373 */ 374 if (upgt_fw_verify(sc) != 0) 375 goto fail; 376 377 /* 378 * Calculate device memory space. 379 */ 380 if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) { 381 aprint_error_dev(sc->sc_dev, 382 "could not find memory space addresses on FW\n"); 383 goto fail; 384 } 385 sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1; 386 sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1; 387 388 DPRINTF(1, "%s: memory address frame start=0x%08x\n", 389 device_xname(sc->sc_dev), sc->sc_memaddr_frame_start); 390 DPRINTF(1, "%s: memory address frame end=0x%08x\n", 391 device_xname(sc->sc_dev), sc->sc_memaddr_frame_end); 392 DPRINTF(1, "%s: memory address rx start=0x%08x\n", 393 device_xname(sc->sc_dev), sc->sc_memaddr_rx_start); 394 395 upgt_mem_init(sc); 396 397 /* 398 * Load the firmware. 399 */ 400 if (upgt_fw_load(sc) != 0) 401 goto fail; 402 403 /* 404 * Startup the RX pipe. 405 */ 406 struct upgt_data *data_rx = &sc->rx_data; 407 408 usbd_setup_xfer(data_rx->xfer, data_rx, data_rx->buf, 409 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, upgt_rx_cb); 410 error = usbd_transfer(data_rx->xfer); 411 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 412 aprint_error_dev(sc->sc_dev, 413 "could not queue RX transfer\n"); 414 goto fail; 415 } 416 usbd_delay_ms(sc->sc_udev, 100); 417 418 /* 419 * Read the whole EEPROM content and parse it. 420 */ 421 if (upgt_eeprom_read(sc) != 0) 422 goto fail; 423 if (upgt_eeprom_parse(sc) != 0) 424 goto fail; 425 426 /* 427 * Setup the 802.11 device. 428 */ 429 ic->ic_ifp = ifp; 430 ic->ic_phytype = IEEE80211_T_OFDM; 431 ic->ic_opmode = IEEE80211_M_STA; 432 ic->ic_state = IEEE80211_S_INIT; 433 ic->ic_caps = 434 IEEE80211_C_MONITOR | 435 IEEE80211_C_SHPREAMBLE | 436 IEEE80211_C_SHSLOT; 437 438 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 439 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 440 441 for (i = 1; i <= 14; i++) { 442 ic->ic_channels[i].ic_freq = 443 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 444 ic->ic_channels[i].ic_flags = 445 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 446 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 447 } 448 449 ifp->if_softc = sc; 450 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 451 ifp->if_init = upgt_init; 452 ifp->if_ioctl = upgt_ioctl; 453 ifp->if_start = upgt_start; 454 ifp->if_watchdog = upgt_watchdog; 455 IFQ_SET_READY(&ifp->if_snd); 456 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 457 458 if_initialize(ifp); 459 ieee80211_ifattach(ic); 460 ic->ic_newassoc = upgt_newassoc; 461 462 sc->sc_newstate = ic->ic_newstate; 463 ic->ic_newstate = upgt_newstate; 464 465 /* XXX media locking needs revisiting */ 466 mutex_init(&sc->sc_media_mtx, MUTEX_DEFAULT, IPL_SOFTUSB); 467 ieee80211_media_init_with_lock(ic, 468 upgt_media_change, ieee80211_media_status, &sc->sc_media_mtx); 469 470 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 471 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 472 &sc->sc_drvbpf); 473 474 sc->sc_rxtap_len = sizeof(sc->sc_rxtapu); 475 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 476 sc->sc_rxtap.wr_ihdr.it_present = htole32(UPGT_RX_RADIOTAP_PRESENT); 477 478 sc->sc_txtap_len = sizeof(sc->sc_txtapu); 479 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 480 sc->sc_txtap.wt_ihdr.it_present = htole32(UPGT_TX_RADIOTAP_PRESENT); 481 482 aprint_normal_dev(sc->sc_dev, "address %s\n", 483 ether_sprintf(ic->ic_myaddr)); 484 485 ifp->if_percpuq = if_percpuq_create(ifp); 486 if_register(ifp); 487 488 ieee80211_announce(ic); 489 490 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 491 492 /* device attached */ 493 sc->sc_flags |= UPGT_DEVICE_ATTACHED; 494 495 return; 496 fail: 497 aprint_error_dev(sc->sc_dev, "%s failed\n", __func__); 498 } 499 500 static int 501 upgt_detach(device_t self, int flags) 502 { 503 struct upgt_softc *sc = device_private(self); 504 struct ifnet *ifp = &sc->sc_if; 505 struct ieee80211com *ic = &sc->sc_ic; 506 int s; 507 508 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 509 510 if (sc->sc_init_state < UPGT_INIT_INITED) 511 return 0; 512 513 s = splnet(); 514 515 if (ifp->if_flags & IFF_RUNNING) 516 upgt_stop(sc); 517 518 /* remove tasks and timeouts */ 519 callout_halt(&sc->scan_to, NULL); 520 callout_halt(&sc->led_to, NULL); 521 usb_rem_task_wait(sc->sc_udev, &sc->sc_task_newstate, USB_TASKQ_DRIVER, 522 NULL); 523 usb_rem_task_wait(sc->sc_udev, &sc->sc_task_tx, USB_TASKQ_DRIVER, 524 NULL); 525 callout_destroy(&sc->scan_to); 526 callout_destroy(&sc->led_to); 527 528 /* abort and close TX / RX pipes */ 529 if (sc->sc_tx_pipeh != NULL) { 530 usbd_abort_pipe(sc->sc_tx_pipeh); 531 } 532 if (sc->sc_rx_pipeh != NULL) { 533 usbd_abort_pipe(sc->sc_rx_pipeh); 534 } 535 536 /* free xfers */ 537 upgt_free_tx(sc); 538 upgt_free_rx(sc); 539 upgt_free_cmd(sc); 540 541 /* Close TX / RX pipes */ 542 if (sc->sc_tx_pipeh != NULL) { 543 usbd_close_pipe(sc->sc_tx_pipeh); 544 } 545 if (sc->sc_rx_pipeh != NULL) { 546 usbd_close_pipe(sc->sc_rx_pipeh); 547 } 548 549 /* free firmware */ 550 upgt_fw_free(sc); 551 552 if (sc->sc_flags & UPGT_DEVICE_ATTACHED) { 553 /* detach interface */ 554 bpf_detach(ifp); 555 ieee80211_ifdetach(ic); 556 if_detach(ifp); 557 } 558 559 splx(s); 560 561 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 562 563 return 0; 564 } 565 566 static int 567 upgt_activate(device_t self, devact_t act) 568 { 569 struct upgt_softc *sc = device_private(self); 570 571 switch (act) { 572 case DVACT_DEACTIVATE: 573 if_deactivate(&sc->sc_if); 574 return 0; 575 default: 576 return EOPNOTSUPP; 577 } 578 } 579 580 static int 581 upgt_device_type(struct upgt_softc *sc, uint16_t vendor, uint16_t product) 582 { 583 584 if (usb_lookup(upgt_devs_1, vendor, product) != NULL) { 585 sc->sc_device_type = 1; 586 /* XXX */ 587 aprint_error_dev(sc->sc_dev, 588 "version 1 devices not supported yet\n"); 589 return 1; 590 } else 591 sc->sc_device_type = 2; 592 593 return 0; 594 } 595 596 static int 597 upgt_device_init(struct upgt_softc *sc) 598 { 599 struct upgt_data *data_cmd = &sc->cmd_data; 600 const uint8_t init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e }; 601 int len; 602 603 len = sizeof(init_cmd); 604 memcpy(data_cmd->buf, init_cmd, len); 605 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 606 aprint_error_dev(sc->sc_dev, 607 "could not send device init string\n"); 608 return EIO; 609 } 610 usbd_delay_ms(sc->sc_udev, 100); 611 612 DPRINTF(1, "%s: device initialized\n", device_xname(sc->sc_dev)); 613 614 return 0; 615 } 616 617 static int 618 upgt_mem_init(struct upgt_softc *sc) 619 { 620 int i; 621 622 for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) { 623 sc->sc_memory.page[i].used = 0; 624 625 if (i == 0) { 626 /* 627 * The first memory page is always reserved for 628 * command data. 629 */ 630 sc->sc_memory.page[i].addr = 631 sc->sc_memaddr_frame_start + MCLBYTES; 632 } else { 633 sc->sc_memory.page[i].addr = 634 sc->sc_memory.page[i - 1].addr + MCLBYTES; 635 } 636 637 if (sc->sc_memory.page[i].addr + MCLBYTES >= 638 sc->sc_memaddr_frame_end) 639 break; 640 641 DPRINTF(2, "%s: memory address page %d=0x%08x\n", 642 device_xname(sc->sc_dev), i, sc->sc_memory.page[i].addr); 643 } 644 645 sc->sc_memory.pages = i; 646 647 DPRINTF(2, "%s: memory pages=%d\n", 648 device_xname(sc->sc_dev), sc->sc_memory.pages); 649 650 return 0; 651 } 652 653 static uint32_t 654 upgt_mem_alloc(struct upgt_softc *sc) 655 { 656 int i; 657 658 for (i = 0; i < sc->sc_memory.pages; i++) { 659 if (sc->sc_memory.page[i].used == 0) { 660 sc->sc_memory.page[i].used = 1; 661 return sc->sc_memory.page[i].addr; 662 } 663 } 664 665 return 0; 666 } 667 668 static void 669 upgt_mem_free(struct upgt_softc *sc, uint32_t addr) 670 { 671 int i; 672 673 for (i = 0; i < sc->sc_memory.pages; i++) { 674 if (sc->sc_memory.page[i].addr == addr) { 675 sc->sc_memory.page[i].used = 0; 676 return; 677 } 678 } 679 680 aprint_error_dev(sc->sc_dev, "could not free memory address 0x%08x\n", 681 addr); 682 } 683 684 685 static int 686 upgt_fw_alloc(struct upgt_softc *sc) 687 { 688 const char *name = "upgt-gw3887"; 689 int error; 690 691 if (sc->sc_fw == NULL) { 692 error = firmware_load("upgt", name, &sc->sc_fw, 693 &sc->sc_fw_size); 694 if (error != 0) { 695 if (error == ENOENT) { 696 /* 697 * The firmware file for upgt(4) is not in 698 * the default distribution due to its lisence 699 * so explicitly notify it if the firmware file 700 * is not found. 701 */ 702 aprint_error_dev(sc->sc_dev, 703 "firmware file %s is not installed\n", 704 name); 705 aprint_error_dev(sc->sc_dev, 706 "(it is not included in the default" 707 " distribution)\n"); 708 aprint_error_dev(sc->sc_dev, 709 "see upgt(4) man page for details about " 710 "firmware installation\n"); 711 } else { 712 aprint_error_dev(sc->sc_dev, 713 "could not read firmware %s\n", name); 714 } 715 return EIO; 716 } 717 } 718 719 DPRINTF(1, "%s: firmware %s allocated\n", device_xname(sc->sc_dev), 720 name); 721 722 return 0; 723 } 724 725 static void 726 upgt_fw_free(struct upgt_softc *sc) 727 { 728 729 if (sc->sc_fw != NULL) { 730 firmware_free(sc->sc_fw, sc->sc_fw_size); 731 sc->sc_fw = NULL; 732 DPRINTF(1, "%s: firmware freed\n", device_xname(sc->sc_dev)); 733 } 734 } 735 736 static int 737 upgt_fw_verify(struct upgt_softc *sc) 738 { 739 struct upgt_fw_bra_option *bra_option; 740 uint32_t bra_option_type, bra_option_len; 741 uint32_t *uc; 742 int offset, bra_end = 0; 743 744 /* 745 * Seek to beginning of Boot Record Area (BRA). 746 */ 747 for (offset = 0; offset < sc->sc_fw_size; offset += sizeof(*uc)) { 748 uc = (uint32_t *)(sc->sc_fw + offset); 749 if (*uc == 0) 750 break; 751 } 752 for (; offset < sc->sc_fw_size; offset += sizeof(*uc)) { 753 uc = (uint32_t *)(sc->sc_fw + offset); 754 if (*uc != 0) 755 break; 756 } 757 if (offset == sc->sc_fw_size) { 758 aprint_error_dev(sc->sc_dev, 759 "firmware Boot Record Area not found\n"); 760 return EIO; 761 } 762 DPRINTF(1, "%s: firmware Boot Record Area found at offset %d\n", 763 device_xname(sc->sc_dev), offset); 764 765 /* 766 * Parse Boot Record Area (BRA) options. 767 */ 768 while (offset < sc->sc_fw_size && bra_end == 0) { 769 /* get current BRA option */ 770 bra_option = (struct upgt_fw_bra_option *)(sc->sc_fw + offset); 771 bra_option_type = le32toh(bra_option->type); 772 bra_option_len = le32toh(bra_option->len) * sizeof(*uc); 773 774 switch (bra_option_type) { 775 case UPGT_BRA_TYPE_FW: 776 DPRINTF(1, "%s: UPGT_BRA_TYPE_FW len=%d\n", 777 device_xname(sc->sc_dev), bra_option_len); 778 779 if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) { 780 aprint_error_dev(sc->sc_dev, 781 "wrong UPGT_BRA_TYPE_FW len\n"); 782 return EIO; 783 } 784 if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_option->data, 785 bra_option_len) == 0) { 786 sc->sc_fw_type = UPGT_FWTYPE_LM86; 787 break; 788 } 789 if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_option->data, 790 bra_option_len) == 0) { 791 sc->sc_fw_type = UPGT_FWTYPE_LM87; 792 break; 793 } 794 if (memcmp(UPGT_BRA_FWTYPE_FMAC, bra_option->data, 795 bra_option_len) == 0) { 796 sc->sc_fw_type = UPGT_FWTYPE_FMAC; 797 break; 798 } 799 aprint_error_dev(sc->sc_dev, 800 "unsupported firmware type\n"); 801 return EIO; 802 case UPGT_BRA_TYPE_VERSION: 803 DPRINTF(1, "%s: UPGT_BRA_TYPE_VERSION len=%d\n", 804 device_xname(sc->sc_dev), bra_option_len); 805 break; 806 case UPGT_BRA_TYPE_DEPIF: 807 DPRINTF(1, "%s: UPGT_BRA_TYPE_DEPIF len=%d\n", 808 device_xname(sc->sc_dev), bra_option_len); 809 break; 810 case UPGT_BRA_TYPE_EXPIF: 811 DPRINTF(1, "%s: UPGT_BRA_TYPE_EXPIF len=%d\n", 812 device_xname(sc->sc_dev), bra_option_len); 813 break; 814 case UPGT_BRA_TYPE_DESCR: 815 DPRINTF(1, "%s: UPGT_BRA_TYPE_DESCR len=%d\n", 816 device_xname(sc->sc_dev), bra_option_len); 817 818 struct upgt_fw_bra_descr *descr = 819 (struct upgt_fw_bra_descr *)bra_option->data; 820 821 sc->sc_memaddr_frame_start = 822 le32toh(descr->memaddr_space_start); 823 sc->sc_memaddr_frame_end = 824 le32toh(descr->memaddr_space_end); 825 826 DPRINTF(2, "%s: memory address space start=0x%08x\n", 827 device_xname(sc->sc_dev), 828 sc->sc_memaddr_frame_start); 829 DPRINTF(2, "%s: memory address space end=0x%08x\n", 830 device_xname(sc->sc_dev), 831 sc->sc_memaddr_frame_end); 832 break; 833 case UPGT_BRA_TYPE_END: 834 DPRINTF(1, "%s: UPGT_BRA_TYPE_END len=%d\n", 835 device_xname(sc->sc_dev), bra_option_len); 836 bra_end = 1; 837 break; 838 default: 839 DPRINTF(1, "%s: unknown BRA option len=%d\n", 840 device_xname(sc->sc_dev), bra_option_len); 841 return EIO; 842 } 843 844 /* jump to next BRA option */ 845 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len; 846 } 847 848 DPRINTF(1, "%s: firmware verified\n", device_xname(sc->sc_dev)); 849 850 return 0; 851 } 852 853 static int 854 upgt_fw_load(struct upgt_softc *sc) 855 { 856 struct upgt_data *data_cmd = &sc->cmd_data; 857 struct upgt_data *data_rx = &sc->rx_data; 858 struct upgt_fw_x2_header *x2; 859 const uint8_t start_fwload_cmd[] = { 0x3c, 0x0d }; 860 int offset, bsize, n, i, len; 861 uint32_t crc; 862 863 /* send firmware start load command */ 864 len = sizeof(start_fwload_cmd); 865 memcpy(data_cmd->buf, start_fwload_cmd, len); 866 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 867 aprint_error_dev(sc->sc_dev, 868 "could not send start_firmware_load command\n"); 869 return EIO; 870 } 871 872 /* send X2 header */ 873 len = sizeof(struct upgt_fw_x2_header); 874 x2 = (struct upgt_fw_x2_header *)data_cmd->buf; 875 memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE); 876 x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START); 877 x2->len = htole32(sc->sc_fw_size); 878 x2->crc = upgt_crc32_le(data_cmd->buf + UPGT_X2_SIGNATURE_SIZE, 879 sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE - 880 sizeof(uint32_t)); 881 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 882 aprint_error_dev(sc->sc_dev, 883 "could not send firmware X2 header\n"); 884 return EIO; 885 } 886 887 /* download firmware */ 888 for (offset = 0; offset < sc->sc_fw_size; offset += bsize) { 889 if (sc->sc_fw_size - offset > UPGT_FW_BLOCK_SIZE) 890 bsize = UPGT_FW_BLOCK_SIZE; 891 else 892 bsize = sc->sc_fw_size - offset; 893 894 n = upgt_fw_copy(sc->sc_fw + offset, data_cmd->buf, bsize); 895 896 DPRINTF(1, "%s: FW offset=%d, read=%d, sent=%d\n", 897 device_xname(sc->sc_dev), offset, n, bsize); 898 899 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &bsize, 0) 900 != 0) { 901 aprint_error_dev(sc->sc_dev, 902 "error while downloading firmware block\n"); 903 return EIO; 904 } 905 906 bsize = n; 907 } 908 DPRINTF(1, "%s: firmware downloaded\n", device_xname(sc->sc_dev)); 909 910 /* load firmware */ 911 crc = upgt_crc32_le(sc->sc_fw, sc->sc_fw_size); 912 *((uint32_t *)(data_cmd->buf) ) = crc; 913 *((uint8_t *)(data_cmd->buf) + 4) = 'g'; 914 *((uint8_t *)(data_cmd->buf) + 5) = '\r'; 915 len = 6; 916 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 917 aprint_error_dev(sc->sc_dev, 918 "could not send load_firmware command\n"); 919 return EIO; 920 } 921 922 for (i = 0; i < UPGT_FIRMWARE_TIMEOUT; i++) { 923 len = UPGT_FW_BLOCK_SIZE; 924 memset(data_rx->buf, 0, 2); 925 if (upgt_bulk_xmit(sc, data_rx, sc->sc_rx_pipeh, &len, 926 USBD_SHORT_XFER_OK) != 0) { 927 aprint_error_dev(sc->sc_dev, 928 "could not read firmware response\n"); 929 return EIO; 930 } 931 932 if (memcmp(data_rx->buf, "OK", 2) == 0) 933 break; /* firmware load was successful */ 934 } 935 if (i == UPGT_FIRMWARE_TIMEOUT) { 936 aprint_error_dev(sc->sc_dev, "firmware load failed\n"); 937 return EIO; 938 } 939 DPRINTF(1, "%s: firmware loaded\n", device_xname(sc->sc_dev)); 940 941 return 0; 942 } 943 944 /* 945 * While copying the version 2 firmware, we need to replace two characters: 946 * 947 * 0x7e -> 0x7d 0x5e 948 * 0x7d -> 0x7d 0x5d 949 */ 950 static int 951 upgt_fw_copy(char *src, char *dst, int size) 952 { 953 int i, j; 954 955 for (i = 0, j = 0; i < size && j < size; i++) { 956 switch (src[i]) { 957 case 0x7e: 958 dst[j] = 0x7d; 959 j++; 960 dst[j] = 0x5e; 961 j++; 962 break; 963 case 0x7d: 964 dst[j] = 0x7d; 965 j++; 966 dst[j] = 0x5d; 967 j++; 968 break; 969 default: 970 dst[j] = src[i]; 971 j++; 972 break; 973 } 974 } 975 976 return i; 977 } 978 979 static int 980 upgt_eeprom_read(struct upgt_softc *sc) 981 { 982 struct upgt_data *data_cmd = &sc->cmd_data; 983 struct upgt_lmac_mem *mem; 984 struct upgt_lmac_eeprom *eeprom; 985 int offset, block, len; 986 987 offset = 0; 988 block = UPGT_EEPROM_BLOCK_SIZE; 989 while (offset < UPGT_EEPROM_SIZE) { 990 DPRINTF(1, "%s: request EEPROM block (offset=%d, len=%d)\n", 991 device_xname(sc->sc_dev), offset, block); 992 993 /* 994 * Transmit the URB containing the CMD data. 995 */ 996 len = sizeof(*mem) + sizeof(*eeprom) + block; 997 998 memset(data_cmd->buf, 0, len); 999 1000 mem = (struct upgt_lmac_mem *)data_cmd->buf; 1001 mem->addr = htole32(sc->sc_memaddr_frame_start + 1002 UPGT_MEMSIZE_FRAME_HEAD); 1003 1004 eeprom = (struct upgt_lmac_eeprom *)(mem + 1); 1005 eeprom->header1.flags = 0; 1006 eeprom->header1.type = UPGT_H1_TYPE_CTRL; 1007 eeprom->header1.len = htole16(( 1008 sizeof(struct upgt_lmac_eeprom) - 1009 sizeof(struct upgt_lmac_header)) + block); 1010 1011 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start); 1012 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM); 1013 eeprom->header2.flags = 0; 1014 1015 eeprom->offset = htole16(offset); 1016 eeprom->len = htole16(block); 1017 1018 mem->chksum = upgt_chksum_le((uint32_t *)eeprom, 1019 len - sizeof(*mem)); 1020 1021 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 1022 USBD_FORCE_SHORT_XFER) != 0) { 1023 aprint_error_dev(sc->sc_dev, 1024 "could not transmit EEPROM data URB\n"); 1025 return EIO; 1026 } 1027 1028 mutex_enter(&sc->sc_mtx); 1029 int res = cv_timedwait(&sc->sc_cv, &sc->sc_mtx, UPGT_USB_TIMEOUT); 1030 mutex_exit(&sc->sc_mtx); 1031 if (res) { 1032 aprint_error_dev(sc->sc_dev, 1033 "timeout while waiting for EEPROM data\n"); 1034 return EIO; 1035 } 1036 1037 offset += block; 1038 if (UPGT_EEPROM_SIZE - offset < block) 1039 block = UPGT_EEPROM_SIZE - offset; 1040 } 1041 1042 return 0; 1043 } 1044 1045 static int 1046 upgt_eeprom_parse(struct upgt_softc *sc) 1047 { 1048 struct ieee80211com *ic = &sc->sc_ic; 1049 struct upgt_eeprom_header *eeprom_header; 1050 struct upgt_eeprom_option *eeprom_option; 1051 uint16_t option_len; 1052 uint16_t option_type; 1053 uint16_t preamble_len; 1054 int option_end = 0; 1055 1056 /* calculate eeprom options start offset */ 1057 eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom; 1058 preamble_len = le16toh(eeprom_header->preamble_len); 1059 eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom + 1060 (sizeof(struct upgt_eeprom_header) + preamble_len)); 1061 1062 while (!option_end) { 1063 /* the eeprom option length is stored in words */ 1064 option_len = 1065 (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t); 1066 option_type = 1067 le16toh(eeprom_option->type); 1068 1069 switch (option_type) { 1070 case UPGT_EEPROM_TYPE_NAME: 1071 DPRINTF(1, "%s: EEPROM name len=%d\n", 1072 device_xname(sc->sc_dev), option_len); 1073 break; 1074 case UPGT_EEPROM_TYPE_SERIAL: 1075 DPRINTF(1, "%s: EEPROM serial len=%d\n", 1076 device_xname(sc->sc_dev), option_len); 1077 break; 1078 case UPGT_EEPROM_TYPE_MAC: 1079 DPRINTF(1, "%s: EEPROM mac len=%d\n", 1080 device_xname(sc->sc_dev), option_len); 1081 1082 IEEE80211_ADDR_COPY(ic->ic_myaddr, eeprom_option->data); 1083 break; 1084 case UPGT_EEPROM_TYPE_HWRX: 1085 DPRINTF(1, "%s: EEPROM hwrx len=%d\n", 1086 device_xname(sc->sc_dev), option_len); 1087 1088 upgt_eeprom_parse_hwrx(sc, eeprom_option->data); 1089 break; 1090 case UPGT_EEPROM_TYPE_CHIP: 1091 DPRINTF(1, "%s: EEPROM chip len=%d\n", 1092 device_xname(sc->sc_dev), option_len); 1093 break; 1094 case UPGT_EEPROM_TYPE_FREQ3: 1095 DPRINTF(1, "%s: EEPROM freq3 len=%d\n", 1096 device_xname(sc->sc_dev), option_len); 1097 1098 upgt_eeprom_parse_freq3(sc, eeprom_option->data, 1099 option_len); 1100 break; 1101 case UPGT_EEPROM_TYPE_FREQ4: 1102 DPRINTF(1, "%s: EEPROM freq4 len=%d\n", 1103 device_xname(sc->sc_dev), option_len); 1104 1105 upgt_eeprom_parse_freq4(sc, eeprom_option->data, 1106 option_len); 1107 break; 1108 case UPGT_EEPROM_TYPE_FREQ5: 1109 DPRINTF(1, "%s: EEPROM freq5 len=%d\n", 1110 device_xname(sc->sc_dev), option_len); 1111 break; 1112 case UPGT_EEPROM_TYPE_FREQ6: 1113 DPRINTF(1, "%s: EEPROM freq6 len=%d\n", 1114 device_xname(sc->sc_dev), option_len); 1115 1116 upgt_eeprom_parse_freq6(sc, eeprom_option->data, 1117 option_len); 1118 break; 1119 case UPGT_EEPROM_TYPE_END: 1120 DPRINTF(1, "%s: EEPROM end len=%d\n", 1121 device_xname(sc->sc_dev), option_len); 1122 option_end = 1; 1123 break; 1124 case UPGT_EEPROM_TYPE_OFF: 1125 DPRINTF(1, "%s: EEPROM off without end option\n", 1126 device_xname(sc->sc_dev)); 1127 return EIO; 1128 default: 1129 DPRINTF(1, "%s: EEPROM unknown type 0x%04x len=%d\n", 1130 device_xname(sc->sc_dev), option_type, option_len); 1131 break; 1132 } 1133 1134 /* jump to next EEPROM option */ 1135 eeprom_option = (struct upgt_eeprom_option *) 1136 (eeprom_option->data + option_len); 1137 } 1138 1139 return 0; 1140 } 1141 1142 static void 1143 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data) 1144 { 1145 struct upgt_eeprom_option_hwrx *option_hwrx; 1146 1147 option_hwrx = (struct upgt_eeprom_option_hwrx *)data; 1148 1149 sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST; 1150 1151 DPRINTF(2, "%s: hwrx option value=0x%04x\n", 1152 device_xname(sc->sc_dev), sc->sc_eeprom_hwrx); 1153 } 1154 1155 static void 1156 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len) 1157 { 1158 struct upgt_eeprom_freq3_header *freq3_header; 1159 struct upgt_lmac_freq3 *freq3; 1160 int i, elements, flags; 1161 unsigned channel; 1162 1163 freq3_header = (struct upgt_eeprom_freq3_header *)data; 1164 freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1); 1165 1166 flags = freq3_header->flags; 1167 elements = freq3_header->elements; 1168 1169 DPRINTF(2, "%s: flags=0x%02x\n", device_xname(sc->sc_dev), flags); 1170 DPRINTF(2, "%s: elements=%d\n", device_xname(sc->sc_dev), elements); 1171 __USE(flags); 1172 1173 for (i = 0; i < elements; i++) { 1174 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0); 1175 1176 sc->sc_eeprom_freq3[channel] = freq3[i]; 1177 1178 DPRINTF(2, "%s: frequency=%d, channel=%d\n", 1179 device_xname(sc->sc_dev), 1180 le16toh(sc->sc_eeprom_freq3[channel].freq), channel); 1181 } 1182 } 1183 1184 static void 1185 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len) 1186 { 1187 struct upgt_eeprom_freq4_header *freq4_header; 1188 struct upgt_eeprom_freq4_1 *freq4_1; 1189 struct upgt_eeprom_freq4_2 *freq4_2; 1190 int i, j, elements, settings, flags; 1191 unsigned channel; 1192 1193 freq4_header = (struct upgt_eeprom_freq4_header *)data; 1194 freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1); 1195 1196 flags = freq4_header->flags; 1197 elements = freq4_header->elements; 1198 settings = freq4_header->settings; 1199 1200 /* we need this value later */ 1201 sc->sc_eeprom_freq6_settings = freq4_header->settings; 1202 1203 DPRINTF(2, "%s: flags=0x%02x\n", device_xname(sc->sc_dev), flags); 1204 DPRINTF(2, "%s: elements=%d\n", device_xname(sc->sc_dev), elements); 1205 DPRINTF(2, "%s: settings=%d\n", device_xname(sc->sc_dev), settings); 1206 __USE(flags); 1207 1208 for (i = 0; i < elements; i++) { 1209 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0); 1210 1211 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data; 1212 1213 for (j = 0; j < settings; j++) { 1214 sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j]; 1215 sc->sc_eeprom_freq4[channel][j].pad = 0; 1216 } 1217 1218 DPRINTF(2, "%s: frequency=%d, channel=%d\n", 1219 device_xname(sc->sc_dev), 1220 le16toh(freq4_1[i].freq), channel); 1221 } 1222 } 1223 1224 static void 1225 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len) 1226 { 1227 struct upgt_lmac_freq6 *freq6; 1228 int i, elements; 1229 unsigned channel; 1230 1231 freq6 = (struct upgt_lmac_freq6 *)data; 1232 1233 elements = len / sizeof(struct upgt_lmac_freq6); 1234 1235 DPRINTF(2, "%s: elements=%d\n", device_xname(sc->sc_dev), elements); 1236 1237 for (i = 0; i < elements; i++) { 1238 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0); 1239 1240 sc->sc_eeprom_freq6[channel] = freq6[i]; 1241 1242 DPRINTF(2, "%s: frequency=%d, channel=%d\n", 1243 device_xname(sc->sc_dev), 1244 le16toh(sc->sc_eeprom_freq6[channel].freq), channel); 1245 } 1246 } 1247 1248 static int 1249 upgt_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1250 { 1251 struct upgt_softc *sc = ifp->if_softc; 1252 struct ieee80211com *ic = &sc->sc_ic; 1253 int s, error = 0; 1254 1255 s = splnet(); 1256 1257 switch (cmd) { 1258 case SIOCSIFFLAGS: 1259 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1260 break; 1261 if (ifp->if_flags & IFF_UP) { 1262 if ((ifp->if_flags & IFF_RUNNING) == 0) 1263 upgt_init(ifp); 1264 } else { 1265 if (ifp->if_flags & IFF_RUNNING) 1266 upgt_stop(sc); 1267 } 1268 break; 1269 case SIOCADDMULTI: 1270 case SIOCDELMULTI: 1271 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1272 /* setup multicast filter, etc */ 1273 error = 0; 1274 } 1275 break; 1276 default: 1277 error = ieee80211_ioctl(ic, cmd, data); 1278 break; 1279 } 1280 1281 if (error == ENETRESET) { 1282 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1283 (IFF_UP | IFF_RUNNING)) 1284 upgt_init(ifp); 1285 error = 0; 1286 } 1287 1288 splx(s); 1289 1290 return error; 1291 } 1292 1293 static int 1294 upgt_init(struct ifnet *ifp) 1295 { 1296 struct upgt_softc *sc = ifp->if_softc; 1297 struct ieee80211com *ic = &sc->sc_ic; 1298 1299 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1300 1301 if (ifp->if_flags & IFF_RUNNING) 1302 upgt_stop(sc); 1303 1304 ifp->if_flags |= IFF_RUNNING; 1305 ifp->if_flags &= ~IFF_OACTIVE; 1306 1307 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 1308 1309 /* setup device rates */ 1310 upgt_setup_rates(sc); 1311 1312 if (ic->ic_opmode == IEEE80211_M_MONITOR) 1313 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1314 else 1315 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 1316 1317 return 0; 1318 } 1319 1320 static void 1321 upgt_stop(struct upgt_softc *sc) 1322 { 1323 struct ieee80211com *ic = &sc->sc_ic; 1324 struct ifnet *ifp = &sc->sc_if; 1325 1326 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1327 1328 /* device down */ 1329 ifp->if_timer = 0; 1330 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1331 1332 /* change device back to initial state */ 1333 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 1334 } 1335 1336 static int 1337 upgt_media_change(struct ifnet *ifp) 1338 { 1339 struct upgt_softc *sc = ifp->if_softc; 1340 int error; 1341 1342 DPRINTF(1, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1343 1344 if ((error = ieee80211_media_change(ifp)) != ENETRESET) 1345 return error; 1346 1347 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1348 (IFF_UP | IFF_RUNNING)) { 1349 /* give pending USB transfers a chance to finish */ 1350 usbd_delay_ms(sc->sc_udev, 100); 1351 upgt_init(ifp); 1352 } 1353 1354 return 0; 1355 } 1356 1357 static void 1358 upgt_newassoc(struct ieee80211_node *ni, int isnew) 1359 { 1360 1361 ni->ni_txrate = 0; 1362 } 1363 1364 static int 1365 upgt_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1366 { 1367 struct upgt_softc *sc = ic->ic_ifp->if_softc; 1368 1369 /* 1370 * XXXSMP: This does not wait for the task, if it is in flight, 1371 * to complete. If this code works at all, it must rely on the 1372 * kernel lock to serialize with the USB task thread. 1373 */ 1374 usb_rem_task(sc->sc_udev, &sc->sc_task_newstate); 1375 callout_stop(&sc->scan_to); 1376 1377 /* do it in a process context */ 1378 sc->sc_state = nstate; 1379 sc->sc_arg = arg; 1380 usb_add_task(sc->sc_udev, &sc->sc_task_newstate, USB_TASKQ_DRIVER); 1381 1382 return 0; 1383 } 1384 1385 static void 1386 upgt_newstate_task(void *arg) 1387 { 1388 struct upgt_softc *sc = arg; 1389 struct ieee80211com *ic = &sc->sc_ic; 1390 struct ieee80211_node *ni; 1391 unsigned channel; 1392 1393 mutex_enter(&sc->sc_mtx); 1394 1395 switch (sc->sc_state) { 1396 case IEEE80211_S_INIT: 1397 DPRINTF(1, "%s: newstate is IEEE80211_S_INIT\n", 1398 device_xname(sc->sc_dev)); 1399 1400 /* do not accept any frames if the device is down */ 1401 upgt_set_macfilter(sc, IEEE80211_S_INIT); 1402 upgt_set_led(sc, UPGT_LED_OFF); 1403 break; 1404 case IEEE80211_S_SCAN: 1405 DPRINTF(1, "%s: newstate is IEEE80211_S_SCAN\n", 1406 device_xname(sc->sc_dev)); 1407 1408 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1409 upgt_set_channel(sc, channel); 1410 upgt_set_macfilter(sc, IEEE80211_S_SCAN); 1411 callout_schedule(&sc->scan_to, hz / 5); 1412 break; 1413 case IEEE80211_S_AUTH: 1414 DPRINTF(1, "%s: newstate is IEEE80211_S_AUTH\n", 1415 device_xname(sc->sc_dev)); 1416 1417 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1418 upgt_set_channel(sc, channel); 1419 break; 1420 case IEEE80211_S_ASSOC: 1421 DPRINTF(1, "%s: newstate is IEEE80211_S_ASSOC\n", 1422 device_xname(sc->sc_dev)); 1423 1424 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1425 upgt_set_channel(sc, channel); 1426 break; 1427 case IEEE80211_S_RUN: 1428 DPRINTF(1, "%s: newstate is IEEE80211_S_RUN\n", 1429 device_xname(sc->sc_dev)); 1430 1431 channel = ieee80211_chan2ieee(ic, ic->ic_curchan); 1432 upgt_set_channel(sc, channel); 1433 1434 ni = ic->ic_bss; 1435 1436 /* 1437 * TX rate control is done by the firmware. 1438 * Report the maximum rate which is available therefore. 1439 */ 1440 ni->ni_txrate = ni->ni_rates.rs_nrates - 1; 1441 1442 if (ic->ic_opmode != IEEE80211_M_MONITOR) 1443 upgt_set_macfilter(sc, IEEE80211_S_RUN); 1444 upgt_set_led(sc, UPGT_LED_ON); 1445 break; 1446 } 1447 1448 mutex_exit(&sc->sc_mtx); 1449 1450 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 1451 } 1452 1453 static void 1454 upgt_next_scan(void *arg) 1455 { 1456 struct upgt_softc *sc = arg; 1457 struct ieee80211com *ic = &sc->sc_ic; 1458 1459 DPRINTF(2, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1460 1461 if (ic->ic_state == IEEE80211_S_SCAN) 1462 ieee80211_next_scan(ic); 1463 } 1464 1465 static void 1466 upgt_start(struct ifnet *ifp) 1467 { 1468 struct upgt_softc *sc = ifp->if_softc; 1469 struct ieee80211com *ic = &sc->sc_ic; 1470 struct ether_header *eh; 1471 struct ieee80211_node *ni; 1472 struct mbuf *m; 1473 int i; 1474 1475 /* don't transmit packets if interface is busy or down */ 1476 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1477 return; 1478 1479 DPRINTF(2, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1480 1481 for (i = 0; i < UPGT_TX_COUNT; i++) { 1482 struct upgt_data *data_tx = &sc->tx_data[i]; 1483 1484 if (data_tx->m != NULL) 1485 continue; 1486 1487 IF_POLL(&ic->ic_mgtq, m); 1488 if (m != NULL) { 1489 /* management frame */ 1490 IF_DEQUEUE(&ic->ic_mgtq, m); 1491 1492 ni = M_GETCTX(m, struct ieee80211_node *); 1493 M_CLEARCTX(m); 1494 1495 bpf_mtap3(ic->ic_rawbpf, m, BPF_D_OUT); 1496 1497 if ((data_tx->addr = upgt_mem_alloc(sc)) == 0) { 1498 aprint_error_dev(sc->sc_dev, 1499 "no free prism memory\n"); 1500 m_freem(m); 1501 if_statinc(ifp, if_oerrors); 1502 break; 1503 } 1504 data_tx->ni = ni; 1505 data_tx->m = m; 1506 sc->tx_queued++; 1507 } else { 1508 /* data frame */ 1509 if (ic->ic_state != IEEE80211_S_RUN) 1510 break; 1511 1512 IFQ_POLL(&ifp->if_snd, m); 1513 if (m == NULL) 1514 break; 1515 1516 IFQ_DEQUEUE(&ifp->if_snd, m); 1517 if (m->m_len < sizeof(struct ether_header) && 1518 !(m = m_pullup(m, sizeof(struct ether_header)))) 1519 continue; 1520 1521 eh = mtod(m, struct ether_header *); 1522 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1523 if (ni == NULL) { 1524 m_freem(m); 1525 continue; 1526 } 1527 1528 bpf_mtap(ifp, m, BPF_D_OUT); 1529 1530 m = ieee80211_encap(ic, m, ni); 1531 if (m == NULL) { 1532 ieee80211_free_node(ni); 1533 continue; 1534 } 1535 1536 bpf_mtap3(ic->ic_rawbpf, m, BPF_D_OUT); 1537 1538 if ((data_tx->addr = upgt_mem_alloc(sc)) == 0) { 1539 aprint_error_dev(sc->sc_dev, 1540 "no free prism memory\n"); 1541 m_freem(m); 1542 ieee80211_free_node(ni); 1543 if_statinc(ifp, if_oerrors); 1544 break; 1545 } 1546 data_tx->ni = ni; 1547 data_tx->m = m; 1548 sc->tx_queued++; 1549 } 1550 } 1551 1552 if (sc->tx_queued > 0) { 1553 DPRINTF(2, "%s: tx_queued=%d\n", 1554 device_xname(sc->sc_dev), sc->tx_queued); 1555 /* process the TX queue in process context */ 1556 ifp->if_timer = 5; 1557 ifp->if_flags |= IFF_OACTIVE; 1558 usb_rem_task(sc->sc_udev, &sc->sc_task_tx); 1559 usb_add_task(sc->sc_udev, &sc->sc_task_tx, USB_TASKQ_DRIVER); 1560 } 1561 } 1562 1563 static void 1564 upgt_watchdog(struct ifnet *ifp) 1565 { 1566 struct upgt_softc *sc = ifp->if_softc; 1567 struct ieee80211com *ic = &sc->sc_ic; 1568 1569 if (ic->ic_state == IEEE80211_S_INIT) 1570 return; 1571 1572 aprint_error_dev(sc->sc_dev, "watchdog timeout\n"); 1573 1574 /* TODO: what shall we do on TX timeout? */ 1575 1576 ieee80211_watchdog(ic); 1577 } 1578 1579 static void 1580 upgt_tx_task(void *arg) 1581 { 1582 struct upgt_softc *sc = arg; 1583 struct ieee80211com *ic = &sc->sc_ic; 1584 struct ieee80211_frame *wh; 1585 struct ieee80211_key *k; 1586 struct ifnet *ifp = &sc->sc_if; 1587 struct upgt_lmac_mem *mem; 1588 struct upgt_lmac_tx_desc *txdesc; 1589 struct mbuf *m; 1590 uint32_t addr; 1591 int i, len, pad, s; 1592 usbd_status error; 1593 1594 mutex_enter(&sc->sc_mtx); 1595 upgt_set_led(sc, UPGT_LED_BLINK); 1596 mutex_exit(&sc->sc_mtx); 1597 1598 s = splnet(); 1599 1600 for (i = 0; i < UPGT_TX_COUNT; i++) { 1601 struct upgt_data *data_tx = &sc->tx_data[i]; 1602 1603 if (data_tx->m == NULL) 1604 continue; 1605 1606 m = data_tx->m; 1607 addr = data_tx->addr + UPGT_MEMSIZE_FRAME_HEAD; 1608 1609 /* 1610 * Software crypto. 1611 */ 1612 wh = mtod(m, struct ieee80211_frame *); 1613 1614 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1615 k = ieee80211_crypto_encap(ic, data_tx->ni, m); 1616 if (k == NULL) { 1617 m_freem(m); 1618 data_tx->m = NULL; 1619 ieee80211_free_node(data_tx->ni); 1620 data_tx->ni = NULL; 1621 if_statinc(ifp, if_oerrors); 1622 break; 1623 } 1624 1625 /* in case packet header moved, reset pointer */ 1626 wh = mtod(m, struct ieee80211_frame *); 1627 } 1628 1629 /* 1630 * Transmit the URB containing the TX data. 1631 */ 1632 memset(data_tx->buf, 0, sizeof(*mem) + sizeof(*txdesc)); 1633 1634 mem = (struct upgt_lmac_mem *)data_tx->buf; 1635 mem->addr = htole32(addr); 1636 1637 txdesc = (struct upgt_lmac_tx_desc *)(mem + 1); 1638 1639 /* XXX differ between data and mgmt frames? */ 1640 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA; 1641 txdesc->header1.type = UPGT_H1_TYPE_TX_DATA; 1642 txdesc->header1.len = htole16(m->m_pkthdr.len); 1643 1644 txdesc->header2.reqid = htole32(data_tx->addr); 1645 txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES); 1646 txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES); 1647 1648 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1649 IEEE80211_FC0_TYPE_MGT) { 1650 /* always send mgmt frames at lowest rate (DS1) */ 1651 memset(txdesc->rates, 0x10, sizeof(txdesc->rates)); 1652 } else { 1653 memcpy(txdesc->rates, sc->sc_cur_rateset, 1654 sizeof(txdesc->rates)); 1655 } 1656 txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA); 1657 txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE; 1658 1659 if (sc->sc_drvbpf != NULL) { 1660 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap; 1661 1662 tap->wt_flags = 0; 1663 tap->wt_rate = 0; /* TODO: where to get from? */ 1664 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1665 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1666 1667 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m, 1668 BPF_D_OUT); 1669 } 1670 1671 /* copy frame below our TX descriptor header */ 1672 m_copydata(m, 0, m->m_pkthdr.len, 1673 data_tx->buf + sizeof(*mem) + sizeof(*txdesc)); 1674 1675 /* calculate frame size */ 1676 len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len; 1677 1678 if (len & 3) { 1679 /* we need to align the frame to a 4 byte boundary */ 1680 pad = 4 - (len & 3); 1681 memset(data_tx->buf + len, 0, pad); 1682 len += pad; 1683 } 1684 1685 /* calculate frame checksum */ 1686 mem->chksum = upgt_chksum_le((uint32_t *)txdesc, 1687 len - sizeof(*mem)); 1688 1689 /* we do not need the mbuf anymore */ 1690 m_freem(m); 1691 data_tx->m = NULL; 1692 1693 ieee80211_free_node(data_tx->ni); 1694 data_tx->ni = NULL; 1695 1696 DPRINTF(2, "%s: TX start data sending\n", 1697 device_xname(sc->sc_dev)); 1698 1699 usbd_setup_xfer(data_tx->xfer, data_tx, data_tx->buf, len, 1700 USBD_FORCE_SHORT_XFER, UPGT_USB_TIMEOUT, NULL); 1701 error = usbd_transfer(data_tx->xfer); 1702 if (error != USBD_NORMAL_COMPLETION && 1703 error != USBD_IN_PROGRESS) { 1704 aprint_error_dev(sc->sc_dev, 1705 "could not transmit TX data URB\n"); 1706 if_statinc(ifp, if_oerrors); 1707 break; 1708 } 1709 1710 DPRINTF(2, "%s: TX sent (%d bytes)\n", 1711 device_xname(sc->sc_dev), len); 1712 } 1713 1714 splx(s); 1715 1716 /* 1717 * If we don't regulary read the device statistics, the RX queue 1718 * will stall. It's strange, but it works, so we keep reading 1719 * the statistics here. *shrug* 1720 */ 1721 mutex_enter(&sc->sc_mtx); 1722 upgt_get_stats(sc); 1723 mutex_exit(&sc->sc_mtx); 1724 } 1725 1726 static void 1727 upgt_tx_done(struct upgt_softc *sc, uint8_t *data) 1728 { 1729 struct ifnet *ifp = &sc->sc_if; 1730 struct upgt_lmac_tx_done_desc *desc; 1731 int i, s; 1732 1733 s = splnet(); 1734 1735 desc = (struct upgt_lmac_tx_done_desc *)data; 1736 1737 for (i = 0; i < UPGT_TX_COUNT; i++) { 1738 struct upgt_data *data_tx = &sc->tx_data[i]; 1739 1740 if (data_tx->addr == le32toh(desc->header2.reqid)) { 1741 upgt_mem_free(sc, data_tx->addr); 1742 data_tx->addr = 0; 1743 1744 sc->tx_queued--; 1745 if_statinc(ifp, if_opackets); 1746 1747 DPRINTF(2, "%s: TX done: ", device_xname(sc->sc_dev)); 1748 DPRINTF(2, "memaddr=0x%08x, status=0x%04x, rssi=%d, ", 1749 le32toh(desc->header2.reqid), 1750 le16toh(desc->status), 1751 le16toh(desc->rssi)); 1752 DPRINTF(2, "seq=%d\n", le16toh(desc->seq)); 1753 break; 1754 } 1755 } 1756 1757 if (sc->tx_queued == 0) { 1758 /* TX queued was processed, continue */ 1759 ifp->if_timer = 0; 1760 ifp->if_flags &= ~IFF_OACTIVE; 1761 upgt_start(ifp); 1762 } 1763 1764 splx(s); 1765 } 1766 1767 static void 1768 upgt_rx_cb(struct usbd_xfer *xfer, void * priv, usbd_status status) 1769 { 1770 struct upgt_data *data_rx = priv; 1771 struct upgt_softc *sc = data_rx->sc; 1772 int len; 1773 struct upgt_lmac_header *header; 1774 struct upgt_lmac_eeprom *eeprom; 1775 uint8_t h1_type; 1776 uint16_t h2_type; 1777 1778 DPRINTF(3, "%s: %s\n", device_xname(sc->sc_dev), __func__); 1779 1780 if (status != USBD_NORMAL_COMPLETION) { 1781 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 1782 return; 1783 if (status == USBD_STALLED) 1784 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 1785 goto skip; 1786 } 1787 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 1788 1789 /* 1790 * Check what type of frame came in. 1791 */ 1792 header = (struct upgt_lmac_header *)(data_rx->buf + 4); 1793 1794 h1_type = header->header1.type; 1795 h2_type = le16toh(header->header2.type); 1796 1797 if (h1_type == UPGT_H1_TYPE_CTRL && 1798 h2_type == UPGT_H2_TYPE_EEPROM) { 1799 eeprom = (struct upgt_lmac_eeprom *)(data_rx->buf + 4); 1800 uint16_t eeprom_offset = le16toh(eeprom->offset); 1801 uint16_t eeprom_len = le16toh(eeprom->len); 1802 1803 DPRINTF(2, "%s: received EEPROM block (offset=%d, len=%d)\n", 1804 device_xname(sc->sc_dev), eeprom_offset, eeprom_len); 1805 1806 mutex_enter(&sc->sc_mtx); 1807 memcpy(sc->sc_eeprom + eeprom_offset, 1808 data_rx->buf + sizeof(struct upgt_lmac_eeprom) + 4, 1809 eeprom_len); 1810 1811 /* EEPROM data has arrived in time, wakeup upgt_eeprom_read */ 1812 /* Note eeprom data arrived */ 1813 cv_broadcast(&sc->sc_cv); 1814 mutex_exit(&sc->sc_mtx); 1815 } else 1816 if (h1_type == UPGT_H1_TYPE_CTRL && 1817 h2_type == UPGT_H2_TYPE_TX_DONE) { 1818 DPRINTF(2, "%s: received 802.11 TX done\n", 1819 device_xname(sc->sc_dev)); 1820 1821 upgt_tx_done(sc, data_rx->buf + 4); 1822 } else 1823 if (h1_type == UPGT_H1_TYPE_RX_DATA || 1824 h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) { 1825 DPRINTF(3, "%s: received 802.11 RX data\n", 1826 device_xname(sc->sc_dev)); 1827 1828 upgt_rx(sc, data_rx->buf + 4, le16toh(header->header1.len)); 1829 } else 1830 if (h1_type == UPGT_H1_TYPE_CTRL && 1831 h2_type == UPGT_H2_TYPE_STATS) { 1832 DPRINTF(2, "%s: received statistic data\n", 1833 device_xname(sc->sc_dev)); 1834 1835 /* TODO: what could we do with the statistic data? */ 1836 } else { 1837 /* ignore unknown frame types */ 1838 DPRINTF(1, "%s: received unknown frame type 0x%02x\n", 1839 device_xname(sc->sc_dev), header->header1.type); 1840 } 1841 1842 skip: /* setup new transfer */ 1843 usbd_setup_xfer(xfer, data_rx, data_rx->buf, MCLBYTES, 1844 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, upgt_rx_cb); 1845 (void)usbd_transfer(xfer); 1846 } 1847 1848 static void 1849 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen) 1850 { 1851 struct ieee80211com *ic = &sc->sc_ic; 1852 struct ifnet *ifp = &sc->sc_if; 1853 struct upgt_lmac_rx_desc *rxdesc; 1854 struct ieee80211_frame *wh; 1855 struct ieee80211_node *ni; 1856 struct mbuf *m; 1857 int s; 1858 1859 /* access RX packet descriptor */ 1860 rxdesc = (struct upgt_lmac_rx_desc *)data; 1861 1862 /* create mbuf which is suitable for strict alignment archs */ 1863 m = m_devget(rxdesc->data, pkglen, 0, ifp); 1864 if (m == NULL) { 1865 DPRINTF(1, "%s: could not create RX mbuf\n", 1866 device_xname(sc->sc_dev)); 1867 if_statinc(ifp, if_ierrors); 1868 return; 1869 } 1870 1871 s = splnet(); 1872 1873 if (sc->sc_drvbpf != NULL) { 1874 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap; 1875 1876 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 1877 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate); 1878 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 1879 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 1880 tap->wr_antsignal = rxdesc->rssi; 1881 1882 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m, BPF_D_IN); 1883 } 1884 1885 /* trim FCS */ 1886 m_adj(m, -IEEE80211_CRC_LEN); 1887 1888 wh = mtod(m, struct ieee80211_frame *); 1889 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1890 1891 /* push the frame up to the 802.11 stack */ 1892 ieee80211_input(ic, m, ni, rxdesc->rssi, 0); 1893 1894 /* node is no longer needed */ 1895 ieee80211_free_node(ni); 1896 1897 splx(s); 1898 1899 DPRINTF(3, "%s: RX done\n", device_xname(sc->sc_dev)); 1900 } 1901 1902 static void 1903 upgt_setup_rates(struct upgt_softc *sc) 1904 { 1905 struct ieee80211com *ic = &sc->sc_ic; 1906 1907 /* 1908 * 0x01 = OFMD6 0x10 = DS1 1909 * 0x04 = OFDM9 0x11 = DS2 1910 * 0x06 = OFDM12 0x12 = DS5 1911 * 0x07 = OFDM18 0x13 = DS11 1912 * 0x08 = OFDM24 1913 * 0x09 = OFDM36 1914 * 0x0a = OFDM48 1915 * 0x0b = OFDM54 1916 */ 1917 const uint8_t rateset_auto_11b[] = 1918 { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 }; 1919 const uint8_t rateset_auto_11g[] = 1920 { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 }; 1921 const uint8_t rateset_fix_11bg[] = 1922 { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07, 1923 0x08, 0x09, 0x0a, 0x0b }; 1924 1925 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) { 1926 /* 1927 * Automatic rate control is done by the device. 1928 * We just pass the rateset from which the device 1929 * will pickup a rate. 1930 */ 1931 if (ic->ic_curmode == IEEE80211_MODE_11B) 1932 memcpy(sc->sc_cur_rateset, rateset_auto_11b, 1933 sizeof(sc->sc_cur_rateset)); 1934 if (ic->ic_curmode == IEEE80211_MODE_11G || 1935 ic->ic_curmode == IEEE80211_MODE_AUTO) 1936 memcpy(sc->sc_cur_rateset, rateset_auto_11g, 1937 sizeof(sc->sc_cur_rateset)); 1938 } else { 1939 /* set a fixed rate */ 1940 memset(sc->sc_cur_rateset, rateset_fix_11bg[ic->ic_fixed_rate], 1941 sizeof(sc->sc_cur_rateset)); 1942 } 1943 } 1944 1945 static uint8_t 1946 upgt_rx_rate(struct upgt_softc *sc, const int rate) 1947 { 1948 struct ieee80211com *ic = &sc->sc_ic; 1949 1950 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1951 if (rate < 0 || rate > 3) 1952 /* invalid rate */ 1953 return 0; 1954 1955 switch (rate) { 1956 case 0: 1957 return 2; 1958 case 1: 1959 return 4; 1960 case 2: 1961 return 11; 1962 case 3: 1963 return 22; 1964 default: 1965 return 0; 1966 } 1967 } 1968 1969 if (ic->ic_curmode == IEEE80211_MODE_11G) { 1970 if (rate < 0 || rate > 11) 1971 /* invalid rate */ 1972 return 0; 1973 1974 switch (rate) { 1975 case 0: 1976 return 2; 1977 case 1: 1978 return 4; 1979 case 2: 1980 return 11; 1981 case 3: 1982 return 22; 1983 case 4: 1984 return 12; 1985 case 5: 1986 return 18; 1987 case 6: 1988 return 24; 1989 case 7: 1990 return 36; 1991 case 8: 1992 return 48; 1993 case 9: 1994 return 72; 1995 case 10: 1996 return 96; 1997 case 11: 1998 return 108; 1999 default: 2000 return 0; 2001 } 2002 } 2003 2004 return 0; 2005 } 2006 2007 static int 2008 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state) 2009 { 2010 struct ieee80211com *ic = &sc->sc_ic; 2011 struct ieee80211_node *ni = ic->ic_bss; 2012 struct upgt_data *data_cmd = &sc->cmd_data; 2013 struct upgt_lmac_mem *mem; 2014 struct upgt_lmac_filter *filter; 2015 int len; 2016 const uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 2017 2018 /* 2019 * Transmit the URB containing the CMD data. 2020 */ 2021 len = sizeof(*mem) + sizeof(*filter); 2022 2023 memset(data_cmd->buf, 0, len); 2024 2025 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2026 mem->addr = htole32(sc->sc_memaddr_frame_start + 2027 UPGT_MEMSIZE_FRAME_HEAD); 2028 2029 filter = (struct upgt_lmac_filter *)(mem + 1); 2030 2031 filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK; 2032 filter->header1.type = UPGT_H1_TYPE_CTRL; 2033 filter->header1.len = htole16( 2034 sizeof(struct upgt_lmac_filter) - 2035 sizeof(struct upgt_lmac_header)); 2036 2037 filter->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2038 filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER); 2039 filter->header2.flags = 0; 2040 2041 switch (state) { 2042 case IEEE80211_S_INIT: 2043 DPRINTF(1, "%s: set MAC filter to INIT\n", 2044 device_xname(sc->sc_dev)); 2045 2046 filter->type = htole16(UPGT_FILTER_TYPE_RESET); 2047 break; 2048 case IEEE80211_S_SCAN: 2049 DPRINTF(1, "%s: set MAC filter to SCAN (bssid %s)\n", 2050 device_xname(sc->sc_dev), ether_sprintf(broadcast)); 2051 2052 filter->type = htole16(UPGT_FILTER_TYPE_NONE); 2053 IEEE80211_ADDR_COPY(filter->dst, ic->ic_myaddr); 2054 IEEE80211_ADDR_COPY(filter->src, broadcast); 2055 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1); 2056 filter->rxaddr = htole32(sc->sc_memaddr_rx_start); 2057 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2); 2058 filter->rxhw = htole32(sc->sc_eeprom_hwrx); 2059 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3); 2060 break; 2061 case IEEE80211_S_RUN: 2062 DPRINTF(1, "%s: set MAC filter to RUN (bssid %s)\n", 2063 device_xname(sc->sc_dev), ether_sprintf(ni->ni_bssid)); 2064 2065 filter->type = htole16(UPGT_FILTER_TYPE_STA); 2066 IEEE80211_ADDR_COPY(filter->dst, ic->ic_myaddr); 2067 IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid); 2068 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1); 2069 filter->rxaddr = htole32(sc->sc_memaddr_rx_start); 2070 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2); 2071 filter->rxhw = htole32(sc->sc_eeprom_hwrx); 2072 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3); 2073 break; 2074 default: 2075 aprint_error_dev(sc->sc_dev, 2076 "MAC filter does not know that state\n"); 2077 break; 2078 } 2079 2080 mem->chksum = upgt_chksum_le((uint32_t *)filter, sizeof(*filter)); 2081 2082 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2083 aprint_error_dev(sc->sc_dev, 2084 "could not transmit macfilter CMD data URB\n"); 2085 return EIO; 2086 } 2087 2088 return 0; 2089 } 2090 2091 static int 2092 upgt_set_channel(struct upgt_softc *sc, unsigned channel) 2093 { 2094 struct upgt_data *data_cmd = &sc->cmd_data; 2095 struct upgt_lmac_mem *mem; 2096 struct upgt_lmac_channel *chan; 2097 int len; 2098 2099 DPRINTF(1, "%s: %s: %d\n", device_xname(sc->sc_dev), __func__, 2100 channel); 2101 2102 /* 2103 * Transmit the URB containing the CMD data. 2104 */ 2105 len = sizeof(*mem) + sizeof(*chan); 2106 2107 memset(data_cmd->buf, 0, len); 2108 2109 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2110 mem->addr = htole32(sc->sc_memaddr_frame_start + 2111 UPGT_MEMSIZE_FRAME_HEAD); 2112 2113 chan = (struct upgt_lmac_channel *)(mem + 1); 2114 2115 chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK; 2116 chan->header1.type = UPGT_H1_TYPE_CTRL; 2117 chan->header1.len = htole16( 2118 sizeof(struct upgt_lmac_channel) - 2119 sizeof(struct upgt_lmac_header)); 2120 2121 chan->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2122 chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL); 2123 chan->header2.flags = 0; 2124 2125 chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1); 2126 chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2); 2127 chan->freq6 = sc->sc_eeprom_freq6[channel]; 2128 chan->settings = sc->sc_eeprom_freq6_settings; 2129 chan->unknown3 = UPGT_CHANNEL_UNKNOWN3; 2130 2131 memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data, 2132 sizeof(chan->freq3_1)); 2133 2134 memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel], 2135 sizeof(sc->sc_eeprom_freq4[channel])); 2136 2137 memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data, 2138 sizeof(chan->freq3_2)); 2139 2140 mem->chksum = upgt_chksum_le((uint32_t *)chan, sizeof(*chan)); 2141 2142 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2143 aprint_error_dev(sc->sc_dev, 2144 "could not transmit channel CMD data URB\n"); 2145 return EIO; 2146 } 2147 2148 return 0; 2149 } 2150 2151 static void 2152 upgt_set_led(struct upgt_softc *sc, int action) 2153 { 2154 struct ieee80211com *ic = &sc->sc_ic; 2155 struct upgt_data *data_cmd = &sc->cmd_data; 2156 struct upgt_lmac_mem *mem; 2157 struct upgt_lmac_led *led; 2158 struct timeval t; 2159 int len; 2160 2161 /* 2162 * Transmit the URB containing the CMD data. 2163 */ 2164 len = sizeof(*mem) + sizeof(*led); 2165 2166 memset(data_cmd->buf, 0, len); 2167 2168 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2169 mem->addr = htole32(sc->sc_memaddr_frame_start + 2170 UPGT_MEMSIZE_FRAME_HEAD); 2171 2172 led = (struct upgt_lmac_led *)(mem + 1); 2173 2174 led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK; 2175 led->header1.type = UPGT_H1_TYPE_CTRL; 2176 led->header1.len = htole16( 2177 sizeof(struct upgt_lmac_led) - 2178 sizeof(struct upgt_lmac_header)); 2179 2180 led->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2181 led->header2.type = htole16(UPGT_H2_TYPE_LED); 2182 led->header2.flags = 0; 2183 2184 switch (action) { 2185 case UPGT_LED_OFF: 2186 led->mode = htole16(UPGT_LED_MODE_SET); 2187 led->action_fix = 0; 2188 led->action_tmp = htole16(UPGT_LED_ACTION_OFF); 2189 led->action_tmp_dur = 0; 2190 break; 2191 case UPGT_LED_ON: 2192 led->mode = htole16(UPGT_LED_MODE_SET); 2193 led->action_fix = 0; 2194 led->action_tmp = htole16(UPGT_LED_ACTION_ON); 2195 led->action_tmp_dur = 0; 2196 break; 2197 case UPGT_LED_BLINK: 2198 if (ic->ic_state != IEEE80211_S_RUN) 2199 return; 2200 if (sc->sc_led_blink) 2201 /* previous blink was not finished */ 2202 return; 2203 led->mode = htole16(UPGT_LED_MODE_SET); 2204 led->action_fix = htole16(UPGT_LED_ACTION_OFF); 2205 led->action_tmp = htole16(UPGT_LED_ACTION_ON); 2206 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR); 2207 /* lock blink */ 2208 sc->sc_led_blink = 1; 2209 t.tv_sec = 0; 2210 t.tv_usec = UPGT_LED_ACTION_TMP_DUR * 1000L; 2211 callout_schedule(&sc->led_to, tvtohz(&t)); 2212 break; 2213 default: 2214 return; 2215 } 2216 2217 mem->chksum = upgt_chksum_le((uint32_t *)led, sizeof(*led)); 2218 2219 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2220 aprint_error_dev(sc->sc_dev, 2221 "could not transmit led CMD URB\n"); 2222 } 2223 } 2224 2225 static void 2226 upgt_set_led_blink(void *arg) 2227 { 2228 struct upgt_softc *sc = arg; 2229 2230 /* blink finished, we are ready for a next one */ 2231 sc->sc_led_blink = 0; 2232 callout_stop(&sc->led_to); 2233 } 2234 2235 static int 2236 upgt_get_stats(struct upgt_softc *sc) 2237 { 2238 struct upgt_data *data_cmd = &sc->cmd_data; 2239 struct upgt_lmac_mem *mem; 2240 struct upgt_lmac_stats *stats; 2241 int len; 2242 2243 /* 2244 * Transmit the URB containing the CMD data. 2245 */ 2246 len = sizeof(*mem) + sizeof(*stats); 2247 2248 memset(data_cmd->buf, 0, len); 2249 2250 mem = (struct upgt_lmac_mem *)data_cmd->buf; 2251 mem->addr = htole32(sc->sc_memaddr_frame_start + 2252 UPGT_MEMSIZE_FRAME_HEAD); 2253 2254 stats = (struct upgt_lmac_stats *)(mem + 1); 2255 2256 stats->header1.flags = 0; 2257 stats->header1.type = UPGT_H1_TYPE_CTRL; 2258 stats->header1.len = htole16( 2259 sizeof(struct upgt_lmac_stats) - 2260 sizeof(struct upgt_lmac_header)); 2261 2262 stats->header2.reqid = htole32(sc->sc_memaddr_frame_start); 2263 stats->header2.type = htole16(UPGT_H2_TYPE_STATS); 2264 stats->header2.flags = 0; 2265 2266 mem->chksum = upgt_chksum_le((uint32_t *)stats, sizeof(*stats)); 2267 2268 if (upgt_bulk_xmit(sc, data_cmd, sc->sc_tx_pipeh, &len, 0) != 0) { 2269 aprint_error_dev(sc->sc_dev, 2270 "could not transmit statistics CMD data URB\n"); 2271 return EIO; 2272 } 2273 2274 return 0; 2275 2276 } 2277 2278 static int 2279 upgt_alloc_tx(struct upgt_softc *sc) 2280 { 2281 int i; 2282 2283 sc->tx_queued = 0; 2284 2285 for (i = 0; i < UPGT_TX_COUNT; i++) { 2286 struct upgt_data *data_tx = &sc->tx_data[i]; 2287 2288 data_tx->sc = sc; 2289 2290 int err = usbd_create_xfer(sc->sc_tx_pipeh, MCLBYTES, 2291 USBD_FORCE_SHORT_XFER, 0, &data_tx->xfer); 2292 if (err) { 2293 aprint_error_dev(sc->sc_dev, 2294 "could not allocate TX xfer\n"); 2295 return err; 2296 } 2297 2298 data_tx->buf = usbd_get_buffer(data_tx->xfer); 2299 } 2300 2301 return 0; 2302 } 2303 2304 static int 2305 upgt_alloc_rx(struct upgt_softc *sc) 2306 { 2307 struct upgt_data *data_rx = &sc->rx_data; 2308 2309 data_rx->sc = sc; 2310 2311 int err = usbd_create_xfer(sc->sc_rx_pipeh, MCLBYTES, 2312 0, 0, &data_rx->xfer); 2313 if (err) { 2314 aprint_error_dev(sc->sc_dev, "could not allocate RX xfer\n"); 2315 return err; 2316 } 2317 2318 data_rx->buf = usbd_get_buffer(data_rx->xfer); 2319 2320 return 0; 2321 } 2322 2323 static int 2324 upgt_alloc_cmd(struct upgt_softc *sc) 2325 { 2326 struct upgt_data *data_cmd = &sc->cmd_data; 2327 2328 data_cmd->sc = sc; 2329 2330 int err = usbd_create_xfer(sc->sc_tx_pipeh, MCLBYTES, 2331 USBD_FORCE_SHORT_XFER, 0, &data_cmd->xfer); 2332 if (err) { 2333 aprint_error_dev(sc->sc_dev, "could not allocate RX xfer\n"); 2334 return err; 2335 } 2336 2337 data_cmd->buf = usbd_get_buffer(data_cmd->xfer); 2338 2339 cv_init(&sc->sc_cv, "upgteeprom"); 2340 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); 2341 2342 return 0; 2343 } 2344 2345 static void 2346 upgt_free_tx(struct upgt_softc *sc) 2347 { 2348 int i; 2349 2350 for (i = 0; i < UPGT_TX_COUNT; i++) { 2351 struct upgt_data *data_tx = &sc->tx_data[i]; 2352 2353 if (data_tx->xfer != NULL) { 2354 usbd_destroy_xfer(data_tx->xfer); 2355 data_tx->xfer = NULL; 2356 } 2357 2358 data_tx->ni = NULL; 2359 } 2360 } 2361 2362 static void 2363 upgt_free_rx(struct upgt_softc *sc) 2364 { 2365 struct upgt_data *data_rx = &sc->rx_data; 2366 2367 if (data_rx->xfer != NULL) { 2368 usbd_destroy_xfer(data_rx->xfer); 2369 data_rx->xfer = NULL; 2370 } 2371 2372 data_rx->ni = NULL; 2373 } 2374 2375 static void 2376 upgt_free_cmd(struct upgt_softc *sc) 2377 { 2378 struct upgt_data *data_cmd = &sc->cmd_data; 2379 2380 if (data_cmd->xfer == NULL) 2381 return; 2382 2383 mutex_destroy(&sc->sc_mtx); 2384 cv_destroy(&sc->sc_cv); 2385 2386 usbd_destroy_xfer(data_cmd->xfer); 2387 data_cmd->xfer = NULL; 2388 } 2389 2390 static int 2391 upgt_bulk_xmit(struct upgt_softc *sc, struct upgt_data *data, 2392 struct usbd_pipe *pipeh, uint32_t *size, int flags) 2393 { 2394 usbd_status status; 2395 2396 status = usbd_bulk_transfer(data->xfer, pipeh, flags, UPGT_USB_TIMEOUT, 2397 data->buf, size); 2398 if (status != USBD_NORMAL_COMPLETION) { 2399 aprint_error_dev(sc->sc_dev, "%s: error %s\n", __func__, 2400 usbd_errstr(status)); 2401 return EIO; 2402 } 2403 2404 return 0; 2405 } 2406 2407 #if 0 2408 static void 2409 upgt_hexdump(void *buf, int len) 2410 { 2411 int i; 2412 2413 for (i = 0; i < len; i++) { 2414 if (i % 16 == 0) 2415 printf("%s%5i:", i ? "\n" : "", i); 2416 if (i % 4 == 0) 2417 printf(" "); 2418 printf("%02x", (int)*((uint8_t *)buf + i)); 2419 } 2420 printf("\n"); 2421 } 2422 #endif 2423 2424 static uint32_t 2425 upgt_crc32_le(const void *buf, size_t size) 2426 { 2427 uint32_t crc; 2428 2429 crc = ether_crc32_le(buf, size); 2430 2431 /* apply final XOR value as common for CRC-32 */ 2432 crc = htole32(crc ^ 0xffffffffU); 2433 2434 return crc; 2435 } 2436 2437 /* 2438 * The firmware awaits a checksum for each frame we send to it. 2439 * The algorithm used is uncommon but somehow similar to CRC32. 2440 */ 2441 static uint32_t 2442 upgt_chksum_le(const uint32_t *buf, size_t size) 2443 { 2444 int i; 2445 uint32_t crc = 0; 2446 2447 for (i = 0; i < size; i += sizeof(uint32_t)) { 2448 crc = htole32(crc ^ *buf++); 2449 crc = htole32((crc >> 5) ^ (crc << 3)); 2450 } 2451 2452 return crc; 2453 } 2454
Indexes created Sun Oct 25 00:26:45 UTC 2026