| 1 | /* $NetBSD: if_wpi.c,v 1.74 2016/06/10 13:27:14 ozaki-r Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2006, 2007 |
| 5 | * Damien Bergamini <damien.bergamini@free.fr> |
| 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_wpi.c,v 1.74 2016/06/10 13:27:14 ozaki-r Exp $" ); |
| 22 | |
| 23 | /* |
| 24 | * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. |
| 25 | */ |
| 26 | |
| 27 | |
| 28 | #include <sys/param.h> |
| 29 | #include <sys/sockio.h> |
| 30 | #include <sys/sysctl.h> |
| 31 | #include <sys/mbuf.h> |
| 32 | #include <sys/kernel.h> |
| 33 | #include <sys/socket.h> |
| 34 | #include <sys/systm.h> |
| 35 | #include <sys/malloc.h> |
| 36 | #include <sys/mutex.h> |
| 37 | #include <sys/once.h> |
| 38 | #include <sys/conf.h> |
| 39 | #include <sys/kauth.h> |
| 40 | #include <sys/callout.h> |
| 41 | #include <sys/proc.h> |
| 42 | #include <sys/kthread.h> |
| 43 | |
| 44 | #include <sys/bus.h> |
| 45 | #include <machine/endian.h> |
| 46 | #include <sys/intr.h> |
| 47 | |
| 48 | #include <dev/pci/pcireg.h> |
| 49 | #include <dev/pci/pcivar.h> |
| 50 | #include <dev/pci/pcidevs.h> |
| 51 | |
| 52 | #include <dev/sysmon/sysmonvar.h> |
| 53 | |
| 54 | #include <net/bpf.h> |
| 55 | #include <net/if.h> |
| 56 | #include <net/if_arp.h> |
| 57 | #include <net/if_dl.h> |
| 58 | #include <net/if_ether.h> |
| 59 | #include <net/if_media.h> |
| 60 | #include <net/if_types.h> |
| 61 | |
| 62 | #include <netinet/in.h> |
| 63 | #include <netinet/in_systm.h> |
| 64 | #include <netinet/in_var.h> |
| 65 | #include <netinet/ip.h> |
| 66 | |
| 67 | #include <net80211/ieee80211_var.h> |
| 68 | #include <net80211/ieee80211_amrr.h> |
| 69 | #include <net80211/ieee80211_radiotap.h> |
| 70 | |
| 71 | #include <dev/firmload.h> |
| 72 | |
| 73 | #include <dev/pci/if_wpireg.h> |
| 74 | #include <dev/pci/if_wpivar.h> |
| 75 | |
| 76 | static const char wpi_firmware_name[] = "iwlwifi-3945.ucode" ; |
| 77 | static once_t wpi_firmware_init; |
| 78 | static kmutex_t wpi_firmware_mutex; |
| 79 | static size_t wpi_firmware_users; |
| 80 | static uint8_t *wpi_firmware_image; |
| 81 | static size_t wpi_firmware_size; |
| 82 | |
| 83 | static int wpi_match(device_t, cfdata_t, void *); |
| 84 | static void wpi_attach(device_t, device_t, void *); |
| 85 | static int wpi_detach(device_t , int); |
| 86 | static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, |
| 87 | void **, bus_size_t, bus_size_t, int); |
| 88 | static void wpi_dma_contig_free(struct wpi_dma_info *); |
| 89 | static int wpi_alloc_shared(struct wpi_softc *); |
| 90 | static void wpi_free_shared(struct wpi_softc *); |
| 91 | static int wpi_alloc_fwmem(struct wpi_softc *); |
| 92 | static void wpi_free_fwmem(struct wpi_softc *); |
| 93 | static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); |
| 94 | static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); |
| 95 | static int wpi_alloc_rpool(struct wpi_softc *); |
| 96 | static void wpi_free_rpool(struct wpi_softc *); |
| 97 | static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); |
| 98 | static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); |
| 99 | static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); |
| 100 | static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, |
| 101 | int, int); |
| 102 | static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); |
| 103 | static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); |
| 104 | static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); |
| 105 | static void wpi_newassoc(struct ieee80211_node *, int); |
| 106 | static int wpi_media_change(struct ifnet *); |
| 107 | static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); |
| 108 | static void wpi_mem_lock(struct wpi_softc *); |
| 109 | static void wpi_mem_unlock(struct wpi_softc *); |
| 110 | static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); |
| 111 | static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); |
| 112 | static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, |
| 113 | const uint32_t *, int); |
| 114 | static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); |
| 115 | static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); |
| 116 | static int wpi_cache_firmware(struct wpi_softc *); |
| 117 | static void wpi_release_firmware(void); |
| 118 | static int wpi_load_firmware(struct wpi_softc *); |
| 119 | static void wpi_calib_timeout(void *); |
| 120 | static void wpi_iter_func(void *, struct ieee80211_node *); |
| 121 | static void wpi_power_calibration(struct wpi_softc *, int); |
| 122 | static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, |
| 123 | struct wpi_rx_data *); |
| 124 | static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); |
| 125 | static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); |
| 126 | static void wpi_notif_intr(struct wpi_softc *); |
| 127 | static int wpi_intr(void *); |
| 128 | static void wpi_read_eeprom(struct wpi_softc *); |
| 129 | static void wpi_read_eeprom_channels(struct wpi_softc *, int); |
| 130 | static void wpi_read_eeprom_group(struct wpi_softc *, int); |
| 131 | static uint8_t wpi_plcp_signal(int); |
| 132 | static int wpi_tx_data(struct wpi_softc *, struct mbuf *, |
| 133 | struct ieee80211_node *, int); |
| 134 | static void wpi_start(struct ifnet *); |
| 135 | static void wpi_watchdog(struct ifnet *); |
| 136 | static int wpi_ioctl(struct ifnet *, u_long, void *); |
| 137 | static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); |
| 138 | static int wpi_wme_update(struct ieee80211com *); |
| 139 | static int wpi_mrr_setup(struct wpi_softc *); |
| 140 | static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); |
| 141 | static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); |
| 142 | static int wpi_set_txpower(struct wpi_softc *, |
| 143 | struct ieee80211_channel *, int); |
| 144 | static int wpi_get_power_index(struct wpi_softc *, |
| 145 | struct wpi_power_group *, struct ieee80211_channel *, int); |
| 146 | static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); |
| 147 | static int wpi_auth(struct wpi_softc *); |
| 148 | static int wpi_scan(struct wpi_softc *); |
| 149 | static int wpi_config(struct wpi_softc *); |
| 150 | static void wpi_stop_master(struct wpi_softc *); |
| 151 | static int wpi_power_up(struct wpi_softc *); |
| 152 | static int wpi_reset(struct wpi_softc *); |
| 153 | static void wpi_hw_config(struct wpi_softc *); |
| 154 | static int wpi_init(struct ifnet *); |
| 155 | static void wpi_stop(struct ifnet *, int); |
| 156 | static bool wpi_resume(device_t, const pmf_qual_t *); |
| 157 | static int wpi_getrfkill(struct wpi_softc *); |
| 158 | static void wpi_sysctlattach(struct wpi_softc *); |
| 159 | static void wpi_rsw_thread(void *); |
| 160 | |
| 161 | #ifdef WPI_DEBUG |
| 162 | #define DPRINTF(x) do { if (wpi_debug > 0) printf x; } while (0) |
| 163 | #define DPRINTFN(n, x) do { if (wpi_debug >= (n)) printf x; } while (0) |
| 164 | int wpi_debug = 1; |
| 165 | #else |
| 166 | #define DPRINTF(x) |
| 167 | #define DPRINTFN(n, x) |
| 168 | #endif |
| 169 | |
| 170 | CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, |
| 171 | wpi_detach, NULL); |
| 172 | |
| 173 | static int |
| 174 | wpi_match(device_t parent, cfdata_t match __unused, void *aux) |
| 175 | { |
| 176 | struct pci_attach_args *pa = aux; |
| 177 | |
| 178 | if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) |
| 179 | return 0; |
| 180 | |
| 181 | if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || |
| 182 | PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) |
| 183 | return 1; |
| 184 | |
| 185 | return 0; |
| 186 | } |
| 187 | |
| 188 | /* Base Address Register */ |
| 189 | #define WPI_PCI_BAR0 0x10 |
| 190 | |
| 191 | static int |
| 192 | wpi_attach_once(void) |
| 193 | { |
| 194 | |
| 195 | mutex_init(&wpi_firmware_mutex, MUTEX_DEFAULT, IPL_NONE); |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | static void |
| 200 | wpi_attach(device_t parent __unused, device_t self, void *aux) |
| 201 | { |
| 202 | struct wpi_softc *sc = device_private(self); |
| 203 | struct ieee80211com *ic = &sc->sc_ic; |
| 204 | struct ifnet *ifp = &sc->sc_ec.ec_if; |
| 205 | struct pci_attach_args *pa = aux; |
| 206 | const char *intrstr; |
| 207 | bus_space_tag_t memt; |
| 208 | bus_space_handle_t memh; |
| 209 | pci_intr_handle_t ih; |
| 210 | pcireg_t data; |
| 211 | int ac, error; |
| 212 | char intrbuf[PCI_INTRSTR_LEN]; |
| 213 | |
| 214 | RUN_ONCE(&wpi_firmware_init, wpi_attach_once); |
| 215 | sc->fw_used = false; |
| 216 | |
| 217 | sc->sc_dev = self; |
| 218 | sc->sc_pct = pa->pa_pc; |
| 219 | sc->sc_pcitag = pa->pa_tag; |
| 220 | |
| 221 | sc->sc_rsw_status = WPI_RSW_UNKNOWN; |
| 222 | sc->sc_rsw.smpsw_name = device_xname(self); |
| 223 | sc->sc_rsw.smpsw_type = PSWITCH_TYPE_RADIO; |
| 224 | error = sysmon_pswitch_register(&sc->sc_rsw); |
| 225 | if (error) { |
| 226 | aprint_error_dev(self, |
| 227 | "unable to register radio switch with sysmon\n" ); |
| 228 | return; |
| 229 | } |
| 230 | mutex_init(&sc->sc_rsw_mtx, MUTEX_DEFAULT, IPL_NONE); |
| 231 | cv_init(&sc->sc_rsw_cv, "wpirsw" ); |
| 232 | if (kthread_create(PRI_NONE, 0, NULL, |
| 233 | wpi_rsw_thread, sc, &sc->sc_rsw_lwp, "%s" , device_xname(self))) { |
| 234 | aprint_error_dev(self, "couldn't create switch thread\n" ); |
| 235 | } |
| 236 | |
| 237 | callout_init(&sc->calib_to, 0); |
| 238 | callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); |
| 239 | |
| 240 | pci_aprint_devinfo(pa, NULL); |
| 241 | |
| 242 | /* enable bus-mastering */ |
| 243 | data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); |
| 244 | data |= PCI_COMMAND_MASTER_ENABLE; |
| 245 | pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); |
| 246 | |
| 247 | /* map the register window */ |
| 248 | error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | |
| 249 | PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); |
| 250 | if (error != 0) { |
| 251 | aprint_error_dev(self, "could not map memory space\n" ); |
| 252 | return; |
| 253 | } |
| 254 | |
| 255 | sc->sc_st = memt; |
| 256 | sc->sc_sh = memh; |
| 257 | sc->sc_dmat = pa->pa_dmat; |
| 258 | |
| 259 | if (pci_intr_map(pa, &ih) != 0) { |
| 260 | aprint_error_dev(self, "could not map interrupt\n" ); |
| 261 | return; |
| 262 | } |
| 263 | |
| 264 | intrstr = pci_intr_string(sc->sc_pct, ih, intrbuf, sizeof(intrbuf)); |
| 265 | sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); |
| 266 | if (sc->sc_ih == NULL) { |
| 267 | aprint_error_dev(self, "could not establish interrupt" ); |
| 268 | if (intrstr != NULL) |
| 269 | aprint_error(" at %s" , intrstr); |
| 270 | aprint_error("\n" ); |
| 271 | return; |
| 272 | } |
| 273 | aprint_normal_dev(self, "interrupting at %s\n" , intrstr); |
| 274 | |
| 275 | /* |
| 276 | * Put adapter into a known state. |
| 277 | */ |
| 278 | if ((error = wpi_reset(sc)) != 0) { |
| 279 | aprint_error_dev(self, "could not reset adapter\n" ); |
| 280 | return; |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * Allocate DMA memory for firmware transfers. |
| 285 | */ |
| 286 | if ((error = wpi_alloc_fwmem(sc)) != 0) { |
| 287 | aprint_error_dev(self, "could not allocate firmware memory\n" ); |
| 288 | return; |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * Allocate shared page and Tx/Rx rings. |
| 293 | */ |
| 294 | if ((error = wpi_alloc_shared(sc)) != 0) { |
| 295 | aprint_error_dev(self, "could not allocate shared area\n" ); |
| 296 | goto fail1; |
| 297 | } |
| 298 | |
| 299 | if ((error = wpi_alloc_rpool(sc)) != 0) { |
| 300 | aprint_error_dev(self, "could not allocate Rx buffers\n" ); |
| 301 | goto fail2; |
| 302 | } |
| 303 | |
| 304 | for (ac = 0; ac < 4; ac++) { |
| 305 | error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, |
| 306 | ac); |
| 307 | if (error != 0) { |
| 308 | aprint_error_dev(self, |
| 309 | "could not allocate Tx ring %d\n" , ac); |
| 310 | goto fail3; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); |
| 315 | if (error != 0) { |
| 316 | aprint_error_dev(self, "could not allocate command ring\n" ); |
| 317 | goto fail3; |
| 318 | } |
| 319 | |
| 320 | error = wpi_alloc_rx_ring(sc, &sc->rxq); |
| 321 | if (error != 0) { |
| 322 | aprint_error_dev(self, "could not allocate Rx ring\n" ); |
| 323 | goto fail4; |
| 324 | } |
| 325 | |
| 326 | ic->ic_ifp = ifp; |
| 327 | ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ |
| 328 | ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ |
| 329 | ic->ic_state = IEEE80211_S_INIT; |
| 330 | |
| 331 | /* set device capabilities */ |
| 332 | ic->ic_caps = |
| 333 | IEEE80211_C_WPA | /* 802.11i */ |
| 334 | IEEE80211_C_MONITOR | /* monitor mode supported */ |
| 335 | IEEE80211_C_TXPMGT | /* tx power management */ |
| 336 | IEEE80211_C_SHSLOT | /* short slot time supported */ |
| 337 | IEEE80211_C_SHPREAMBLE | /* short preamble supported */ |
| 338 | IEEE80211_C_WME; /* 802.11e */ |
| 339 | |
| 340 | /* read supported channels and MAC address from EEPROM */ |
| 341 | wpi_read_eeprom(sc); |
| 342 | |
| 343 | /* set supported .11a, .11b and .11g rates */ |
| 344 | ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a; |
| 345 | ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; |
| 346 | ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; |
| 347 | |
| 348 | /* IBSS channel undefined for now */ |
| 349 | ic->ic_ibss_chan = &ic->ic_channels[0]; |
| 350 | |
| 351 | ifp->if_softc = sc; |
| 352 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
| 353 | ifp->if_init = wpi_init; |
| 354 | ifp->if_stop = wpi_stop; |
| 355 | ifp->if_ioctl = wpi_ioctl; |
| 356 | ifp->if_start = wpi_start; |
| 357 | ifp->if_watchdog = wpi_watchdog; |
| 358 | IFQ_SET_READY(&ifp->if_snd); |
| 359 | memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); |
| 360 | |
| 361 | if_attach(ifp); |
| 362 | ieee80211_ifattach(ic); |
| 363 | /* override default methods */ |
| 364 | ic->ic_node_alloc = wpi_node_alloc; |
| 365 | ic->ic_newassoc = wpi_newassoc; |
| 366 | ic->ic_wme.wme_update = wpi_wme_update; |
| 367 | |
| 368 | /* override state transition machine */ |
| 369 | sc->sc_newstate = ic->ic_newstate; |
| 370 | ic->ic_newstate = wpi_newstate; |
| 371 | ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); |
| 372 | |
| 373 | sc->amrr.amrr_min_success_threshold = 1; |
| 374 | sc->amrr.amrr_max_success_threshold = 15; |
| 375 | |
| 376 | wpi_sysctlattach(sc); |
| 377 | |
| 378 | if (pmf_device_register(self, NULL, wpi_resume)) |
| 379 | pmf_class_network_register(self, ifp); |
| 380 | else |
| 381 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 382 | |
| 383 | bpf_attach2(ifp, DLT_IEEE802_11_RADIO, |
| 384 | sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, |
| 385 | &sc->sc_drvbpf); |
| 386 | |
| 387 | sc->sc_rxtap_len = sizeof sc->sc_rxtapu; |
| 388 | sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); |
| 389 | sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); |
| 390 | |
| 391 | sc->sc_txtap_len = sizeof sc->sc_txtapu; |
| 392 | sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); |
| 393 | sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); |
| 394 | |
| 395 | ieee80211_announce(ic); |
| 396 | |
| 397 | return; |
| 398 | |
| 399 | /* free allocated memory if something failed during attachment */ |
| 400 | fail4: wpi_free_tx_ring(sc, &sc->cmdq); |
| 401 | fail3: while (--ac >= 0) |
| 402 | wpi_free_tx_ring(sc, &sc->txq[ac]); |
| 403 | wpi_free_rpool(sc); |
| 404 | fail2: wpi_free_shared(sc); |
| 405 | fail1: wpi_free_fwmem(sc); |
| 406 | } |
| 407 | |
| 408 | static int |
| 409 | wpi_detach(device_t self, int flags __unused) |
| 410 | { |
| 411 | struct wpi_softc *sc = device_private(self); |
| 412 | struct ifnet *ifp = sc->sc_ic.ic_ifp; |
| 413 | int ac; |
| 414 | |
| 415 | wpi_stop(ifp, 1); |
| 416 | |
| 417 | if (ifp != NULL) |
| 418 | bpf_detach(ifp); |
| 419 | ieee80211_ifdetach(&sc->sc_ic); |
| 420 | if (ifp != NULL) |
| 421 | if_detach(ifp); |
| 422 | |
| 423 | for (ac = 0; ac < 4; ac++) |
| 424 | wpi_free_tx_ring(sc, &sc->txq[ac]); |
| 425 | wpi_free_tx_ring(sc, &sc->cmdq); |
| 426 | wpi_free_rx_ring(sc, &sc->rxq); |
| 427 | wpi_free_rpool(sc); |
| 428 | wpi_free_shared(sc); |
| 429 | |
| 430 | if (sc->sc_ih != NULL) { |
| 431 | pci_intr_disestablish(sc->sc_pct, sc->sc_ih); |
| 432 | sc->sc_ih = NULL; |
| 433 | } |
| 434 | mutex_enter(&sc->sc_rsw_mtx); |
| 435 | sc->sc_dying = 1; |
| 436 | cv_signal(&sc->sc_rsw_cv); |
| 437 | while (sc->sc_rsw_lwp != NULL) |
| 438 | cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); |
| 439 | mutex_exit(&sc->sc_rsw_mtx); |
| 440 | sysmon_pswitch_unregister(&sc->sc_rsw); |
| 441 | |
| 442 | bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); |
| 443 | |
| 444 | if (sc->fw_used) { |
| 445 | sc->fw_used = false; |
| 446 | wpi_release_firmware(); |
| 447 | } |
| 448 | cv_destroy(&sc->sc_rsw_cv); |
| 449 | mutex_destroy(&sc->sc_rsw_mtx); |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | static int |
| 454 | wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, void **kvap, |
| 455 | bus_size_t size, bus_size_t alignment, int flags) |
| 456 | { |
| 457 | int nsegs, error; |
| 458 | |
| 459 | dma->tag = tag; |
| 460 | dma->size = size; |
| 461 | |
| 462 | error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); |
| 463 | if (error != 0) |
| 464 | goto fail; |
| 465 | |
| 466 | error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, |
| 467 | flags); |
| 468 | if (error != 0) |
| 469 | goto fail; |
| 470 | |
| 471 | error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); |
| 472 | if (error != 0) |
| 473 | goto fail; |
| 474 | |
| 475 | error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); |
| 476 | if (error != 0) |
| 477 | goto fail; |
| 478 | |
| 479 | memset(dma->vaddr, 0, size); |
| 480 | bus_dmamap_sync(dma->tag, dma->map, 0, size, BUS_DMASYNC_PREWRITE); |
| 481 | |
| 482 | dma->paddr = dma->map->dm_segs[0].ds_addr; |
| 483 | if (kvap != NULL) |
| 484 | *kvap = dma->vaddr; |
| 485 | |
| 486 | return 0; |
| 487 | |
| 488 | fail: wpi_dma_contig_free(dma); |
| 489 | return error; |
| 490 | } |
| 491 | |
| 492 | static void |
| 493 | wpi_dma_contig_free(struct wpi_dma_info *dma) |
| 494 | { |
| 495 | if (dma->map != NULL) { |
| 496 | if (dma->vaddr != NULL) { |
| 497 | bus_dmamap_unload(dma->tag, dma->map); |
| 498 | bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); |
| 499 | bus_dmamem_free(dma->tag, &dma->seg, 1); |
| 500 | dma->vaddr = NULL; |
| 501 | } |
| 502 | bus_dmamap_destroy(dma->tag, dma->map); |
| 503 | dma->map = NULL; |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | /* |
| 508 | * Allocate a shared page between host and NIC. |
| 509 | */ |
| 510 | static int |
| 511 | wpi_alloc_shared(struct wpi_softc *sc) |
| 512 | { |
| 513 | int error; |
| 514 | |
| 515 | /* must be aligned on a 4K-page boundary */ |
| 516 | error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, |
| 517 | (void **)&sc->shared, sizeof (struct wpi_shared), WPI_BUF_ALIGN, |
| 518 | BUS_DMA_NOWAIT); |
| 519 | if (error != 0) |
| 520 | aprint_error_dev(sc->sc_dev, |
| 521 | "could not allocate shared area DMA memory\n" ); |
| 522 | |
| 523 | return error; |
| 524 | } |
| 525 | |
| 526 | static void |
| 527 | wpi_free_shared(struct wpi_softc *sc) |
| 528 | { |
| 529 | wpi_dma_contig_free(&sc->shared_dma); |
| 530 | } |
| 531 | |
| 532 | /* |
| 533 | * Allocate DMA-safe memory for firmware transfer. |
| 534 | */ |
| 535 | static int |
| 536 | wpi_alloc_fwmem(struct wpi_softc *sc) |
| 537 | { |
| 538 | int error; |
| 539 | |
| 540 | /* allocate enough contiguous space to store text and data */ |
| 541 | error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, |
| 542 | WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, |
| 543 | BUS_DMA_NOWAIT); |
| 544 | |
| 545 | if (error != 0) |
| 546 | aprint_error_dev(sc->sc_dev, |
| 547 | "could not allocate firmware transfer area DMA memory\n" ); |
| 548 | return error; |
| 549 | } |
| 550 | |
| 551 | static void |
| 552 | wpi_free_fwmem(struct wpi_softc *sc) |
| 553 | { |
| 554 | wpi_dma_contig_free(&sc->fw_dma); |
| 555 | } |
| 556 | |
| 557 | static struct wpi_rbuf * |
| 558 | wpi_alloc_rbuf(struct wpi_softc *sc) |
| 559 | { |
| 560 | struct wpi_rbuf *rbuf; |
| 561 | |
| 562 | mutex_enter(&sc->rxq.freelist_mtx); |
| 563 | rbuf = SLIST_FIRST(&sc->rxq.freelist); |
| 564 | if (rbuf != NULL) { |
| 565 | SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); |
| 566 | } |
| 567 | mutex_exit(&sc->rxq.freelist_mtx); |
| 568 | |
| 569 | return rbuf; |
| 570 | } |
| 571 | |
| 572 | /* |
| 573 | * This is called automatically by the network stack when the mbuf to which our |
| 574 | * Rx buffer is attached is freed. |
| 575 | */ |
| 576 | static void |
| 577 | wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) |
| 578 | { |
| 579 | struct wpi_rbuf *rbuf = arg; |
| 580 | struct wpi_softc *sc = rbuf->sc; |
| 581 | |
| 582 | /* put the buffer back in the free list */ |
| 583 | |
| 584 | mutex_enter(&sc->rxq.freelist_mtx); |
| 585 | SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); |
| 586 | mutex_exit(&sc->rxq.freelist_mtx); |
| 587 | |
| 588 | if (__predict_true(m != NULL)) |
| 589 | pool_cache_put(mb_cache, m); |
| 590 | } |
| 591 | |
| 592 | static int |
| 593 | wpi_alloc_rpool(struct wpi_softc *sc) |
| 594 | { |
| 595 | struct wpi_rx_ring *ring = &sc->rxq; |
| 596 | int i, error; |
| 597 | |
| 598 | /* allocate a big chunk of DMA'able memory.. */ |
| 599 | error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, |
| 600 | WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); |
| 601 | if (error != 0) { |
| 602 | aprint_normal_dev(sc->sc_dev, |
| 603 | "could not allocate Rx buffers DMA memory\n" ); |
| 604 | return error; |
| 605 | } |
| 606 | |
| 607 | /* ..and split it into 3KB chunks */ |
| 608 | mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET); |
| 609 | SLIST_INIT(&ring->freelist); |
| 610 | for (i = 0; i < WPI_RBUF_COUNT; i++) { |
| 611 | struct wpi_rbuf *rbuf = &ring->rbuf[i]; |
| 612 | |
| 613 | rbuf->sc = sc; /* backpointer for callbacks */ |
| 614 | rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; |
| 615 | rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; |
| 616 | |
| 617 | SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); |
| 618 | } |
| 619 | |
| 620 | return 0; |
| 621 | } |
| 622 | |
| 623 | static void |
| 624 | wpi_free_rpool(struct wpi_softc *sc) |
| 625 | { |
| 626 | wpi_dma_contig_free(&sc->rxq.buf_dma); |
| 627 | } |
| 628 | |
| 629 | static int |
| 630 | wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) |
| 631 | { |
| 632 | bus_size_t size; |
| 633 | int i, error; |
| 634 | |
| 635 | ring->cur = 0; |
| 636 | |
| 637 | size = WPI_RX_RING_COUNT * sizeof (uint32_t); |
| 638 | error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, |
| 639 | (void **)&ring->desc, size, |
| 640 | WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); |
| 641 | if (error != 0) { |
| 642 | aprint_error_dev(sc->sc_dev, |
| 643 | "could not allocate rx ring DMA memory\n" ); |
| 644 | goto fail; |
| 645 | } |
| 646 | |
| 647 | /* |
| 648 | * Setup Rx buffers. |
| 649 | */ |
| 650 | for (i = 0; i < WPI_RX_RING_COUNT; i++) { |
| 651 | struct wpi_rx_data *data = &ring->data[i]; |
| 652 | struct wpi_rbuf *rbuf; |
| 653 | |
| 654 | error = bus_dmamap_create(sc->sc_dmat, WPI_RBUF_SIZE, 1, |
| 655 | WPI_RBUF_SIZE, 0, BUS_DMA_NOWAIT, &data->map); |
| 656 | if (error) { |
| 657 | aprint_error_dev(sc->sc_dev, |
| 658 | "could not allocate rx dma map\n" ); |
| 659 | goto fail; |
| 660 | } |
| 661 | |
| 662 | MGETHDR(data->m, M_DONTWAIT, MT_DATA); |
| 663 | if (data->m == NULL) { |
| 664 | aprint_error_dev(sc->sc_dev, |
| 665 | "could not allocate rx mbuf\n" ); |
| 666 | error = ENOMEM; |
| 667 | goto fail; |
| 668 | } |
| 669 | if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { |
| 670 | m_freem(data->m); |
| 671 | data->m = NULL; |
| 672 | aprint_error_dev(sc->sc_dev, |
| 673 | "could not allocate rx cluster\n" ); |
| 674 | error = ENOMEM; |
| 675 | goto fail; |
| 676 | } |
| 677 | /* attach Rx buffer to mbuf */ |
| 678 | MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, |
| 679 | rbuf); |
| 680 | data->m->m_flags |= M_EXT_RW; |
| 681 | |
| 682 | error = bus_dmamap_load(sc->sc_dmat, data->map, |
| 683 | mtod(data->m, void *), WPI_RBUF_SIZE, NULL, |
| 684 | BUS_DMA_NOWAIT | BUS_DMA_READ); |
| 685 | if (error) { |
| 686 | aprint_error_dev(sc->sc_dev, |
| 687 | "could not load mbuf: %d\n" , error); |
| 688 | goto fail; |
| 689 | } |
| 690 | |
| 691 | ring->desc[i] = htole32(rbuf->paddr); |
| 692 | } |
| 693 | |
| 694 | bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, size, |
| 695 | BUS_DMASYNC_PREWRITE); |
| 696 | |
| 697 | return 0; |
| 698 | |
| 699 | fail: wpi_free_rx_ring(sc, ring); |
| 700 | return error; |
| 701 | } |
| 702 | |
| 703 | static void |
| 704 | wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) |
| 705 | { |
| 706 | int ntries; |
| 707 | |
| 708 | wpi_mem_lock(sc); |
| 709 | |
| 710 | WPI_WRITE(sc, WPI_RX_CONFIG, 0); |
| 711 | for (ntries = 0; ntries < 100; ntries++) { |
| 712 | if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) |
| 713 | break; |
| 714 | DELAY(10); |
| 715 | } |
| 716 | #ifdef WPI_DEBUG |
| 717 | if (ntries == 100 && wpi_debug > 0) |
| 718 | aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n" ); |
| 719 | #endif |
| 720 | wpi_mem_unlock(sc); |
| 721 | |
| 722 | ring->cur = 0; |
| 723 | } |
| 724 | |
| 725 | static void |
| 726 | wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) |
| 727 | { |
| 728 | int i; |
| 729 | |
| 730 | wpi_dma_contig_free(&ring->desc_dma); |
| 731 | |
| 732 | for (i = 0; i < WPI_RX_RING_COUNT; i++) { |
| 733 | if (ring->data[i].m != NULL) { |
| 734 | bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); |
| 735 | m_freem(ring->data[i].m); |
| 736 | } |
| 737 | if (ring->data[i].map != NULL) { |
| 738 | bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); |
| 739 | } |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | static int |
| 744 | wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, |
| 745 | int qid) |
| 746 | { |
| 747 | int i, error; |
| 748 | |
| 749 | ring->qid = qid; |
| 750 | ring->count = count; |
| 751 | ring->queued = 0; |
| 752 | ring->cur = 0; |
| 753 | |
| 754 | error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, |
| 755 | (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), |
| 756 | WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); |
| 757 | if (error != 0) { |
| 758 | aprint_error_dev(sc->sc_dev, |
| 759 | "could not allocate tx ring DMA memory\n" ); |
| 760 | goto fail; |
| 761 | } |
| 762 | |
| 763 | /* update shared page with ring's base address */ |
| 764 | sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); |
| 765 | bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, |
| 766 | sizeof(struct wpi_shared), BUS_DMASYNC_PREWRITE); |
| 767 | |
| 768 | error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, |
| 769 | (void **)&ring->cmd, count * sizeof (struct wpi_tx_cmd), 4, |
| 770 | BUS_DMA_NOWAIT); |
| 771 | if (error != 0) { |
| 772 | aprint_error_dev(sc->sc_dev, |
| 773 | "could not allocate tx cmd DMA memory\n" ); |
| 774 | goto fail; |
| 775 | } |
| 776 | |
| 777 | ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, |
| 778 | M_NOWAIT | M_ZERO); |
| 779 | if (ring->data == NULL) { |
| 780 | aprint_error_dev(sc->sc_dev, |
| 781 | "could not allocate tx data slots\n" ); |
| 782 | goto fail; |
| 783 | } |
| 784 | |
| 785 | for (i = 0; i < count; i++) { |
| 786 | struct wpi_tx_data *data = &ring->data[i]; |
| 787 | |
| 788 | error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, |
| 789 | WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, |
| 790 | &data->map); |
| 791 | if (error != 0) { |
| 792 | aprint_error_dev(sc->sc_dev, |
| 793 | "could not create tx buf DMA map\n" ); |
| 794 | goto fail; |
| 795 | } |
| 796 | } |
| 797 | |
| 798 | return 0; |
| 799 | |
| 800 | fail: wpi_free_tx_ring(sc, ring); |
| 801 | return error; |
| 802 | } |
| 803 | |
| 804 | static void |
| 805 | wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) |
| 806 | { |
| 807 | int i, ntries; |
| 808 | |
| 809 | wpi_mem_lock(sc); |
| 810 | |
| 811 | WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); |
| 812 | for (ntries = 0; ntries < 100; ntries++) { |
| 813 | if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) |
| 814 | break; |
| 815 | DELAY(10); |
| 816 | } |
| 817 | #ifdef WPI_DEBUG |
| 818 | if (ntries == 100 && wpi_debug > 0) { |
| 819 | aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n" , |
| 820 | ring->qid); |
| 821 | } |
| 822 | #endif |
| 823 | wpi_mem_unlock(sc); |
| 824 | |
| 825 | for (i = 0; i < ring->count; i++) { |
| 826 | struct wpi_tx_data *data = &ring->data[i]; |
| 827 | |
| 828 | if (data->m != NULL) { |
| 829 | bus_dmamap_unload(sc->sc_dmat, data->map); |
| 830 | m_freem(data->m); |
| 831 | data->m = NULL; |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | ring->queued = 0; |
| 836 | ring->cur = 0; |
| 837 | } |
| 838 | |
| 839 | static void |
| 840 | wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) |
| 841 | { |
| 842 | int i; |
| 843 | |
| 844 | wpi_dma_contig_free(&ring->desc_dma); |
| 845 | wpi_dma_contig_free(&ring->cmd_dma); |
| 846 | |
| 847 | if (ring->data != NULL) { |
| 848 | for (i = 0; i < ring->count; i++) { |
| 849 | struct wpi_tx_data *data = &ring->data[i]; |
| 850 | |
| 851 | if (data->m != NULL) { |
| 852 | bus_dmamap_unload(sc->sc_dmat, data->map); |
| 853 | m_freem(data->m); |
| 854 | } |
| 855 | } |
| 856 | free(ring->data, M_DEVBUF); |
| 857 | } |
| 858 | } |
| 859 | |
| 860 | /*ARGUSED*/ |
| 861 | static struct ieee80211_node * |
| 862 | wpi_node_alloc(struct ieee80211_node_table *nt __unused) |
| 863 | { |
| 864 | struct wpi_node *wn; |
| 865 | |
| 866 | wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); |
| 867 | |
| 868 | return (struct ieee80211_node *)wn; |
| 869 | } |
| 870 | |
| 871 | static void |
| 872 | wpi_newassoc(struct ieee80211_node *ni, int isnew) |
| 873 | { |
| 874 | struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; |
| 875 | int i; |
| 876 | |
| 877 | ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); |
| 878 | |
| 879 | /* set rate to some reasonable initial value */ |
| 880 | for (i = ni->ni_rates.rs_nrates - 1; |
| 881 | i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; |
| 882 | i--); |
| 883 | ni->ni_txrate = i; |
| 884 | } |
| 885 | |
| 886 | static int |
| 887 | wpi_media_change(struct ifnet *ifp) |
| 888 | { |
| 889 | int error; |
| 890 | |
| 891 | error = ieee80211_media_change(ifp); |
| 892 | if (error != ENETRESET) |
| 893 | return error; |
| 894 | |
| 895 | if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) |
| 896 | wpi_init(ifp); |
| 897 | |
| 898 | return 0; |
| 899 | } |
| 900 | |
| 901 | static int |
| 902 | wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) |
| 903 | { |
| 904 | struct ifnet *ifp = ic->ic_ifp; |
| 905 | struct wpi_softc *sc = ifp->if_softc; |
| 906 | struct ieee80211_node *ni; |
| 907 | enum ieee80211_state ostate = ic->ic_state; |
| 908 | int error; |
| 909 | |
| 910 | callout_stop(&sc->calib_to); |
| 911 | |
| 912 | switch (nstate) { |
| 913 | case IEEE80211_S_SCAN: |
| 914 | |
| 915 | if (sc->is_scanning) |
| 916 | break; |
| 917 | |
| 918 | sc->is_scanning = true; |
| 919 | |
| 920 | if (ostate != IEEE80211_S_SCAN) { |
| 921 | /* make the link LED blink while we're scanning */ |
| 922 | wpi_set_led(sc, WPI_LED_LINK, 20, 2); |
| 923 | } |
| 924 | |
| 925 | if ((error = wpi_scan(sc)) != 0) { |
| 926 | aprint_error_dev(sc->sc_dev, |
| 927 | "could not initiate scan\n" ); |
| 928 | return error; |
| 929 | } |
| 930 | break; |
| 931 | |
| 932 | case IEEE80211_S_ASSOC: |
| 933 | if (ic->ic_state != IEEE80211_S_RUN) |
| 934 | break; |
| 935 | /* FALLTHROUGH */ |
| 936 | case IEEE80211_S_AUTH: |
| 937 | /* reset state to handle reassociations correctly */ |
| 938 | sc->config.associd = 0; |
| 939 | sc->config.filter &= ~htole32(WPI_FILTER_BSS); |
| 940 | |
| 941 | if ((error = wpi_auth(sc)) != 0) { |
| 942 | aprint_error_dev(sc->sc_dev, |
| 943 | "could not send authentication request\n" ); |
| 944 | return error; |
| 945 | } |
| 946 | break; |
| 947 | |
| 948 | case IEEE80211_S_RUN: |
| 949 | if (ic->ic_opmode == IEEE80211_M_MONITOR) { |
| 950 | /* link LED blinks while monitoring */ |
| 951 | wpi_set_led(sc, WPI_LED_LINK, 5, 5); |
| 952 | break; |
| 953 | } |
| 954 | ni = ic->ic_bss; |
| 955 | |
| 956 | if (ic->ic_opmode != IEEE80211_M_STA) { |
| 957 | (void) wpi_auth(sc); /* XXX */ |
| 958 | wpi_setup_beacon(sc, ni); |
| 959 | } |
| 960 | |
| 961 | wpi_enable_tsf(sc, ni); |
| 962 | |
| 963 | /* update adapter's configuration */ |
| 964 | sc->config.associd = htole16(ni->ni_associd & ~0xc000); |
| 965 | /* short preamble/slot time are negotiated when associating */ |
| 966 | sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | |
| 967 | WPI_CONFIG_SHSLOT); |
| 968 | if (ic->ic_flags & IEEE80211_F_SHSLOT) |
| 969 | sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); |
| 970 | if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) |
| 971 | sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); |
| 972 | sc->config.filter |= htole32(WPI_FILTER_BSS); |
| 973 | if (ic->ic_opmode != IEEE80211_M_STA) |
| 974 | sc->config.filter |= htole32(WPI_FILTER_BEACON); |
| 975 | |
| 976 | /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ |
| 977 | |
| 978 | DPRINTF(("config chan %d flags %x\n" , sc->config.chan, |
| 979 | sc->config.flags)); |
| 980 | error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, |
| 981 | sizeof (struct wpi_config), 1); |
| 982 | if (error != 0) { |
| 983 | aprint_error_dev(sc->sc_dev, |
| 984 | "could not update configuration\n" ); |
| 985 | return error; |
| 986 | } |
| 987 | |
| 988 | /* configuration has changed, set Tx power accordingly */ |
| 989 | if ((error = wpi_set_txpower(sc, ic->ic_curchan, 1)) != 0) { |
| 990 | aprint_error_dev(sc->sc_dev, |
| 991 | "could not set Tx power\n" ); |
| 992 | return error; |
| 993 | } |
| 994 | |
| 995 | if (ic->ic_opmode == IEEE80211_M_STA) { |
| 996 | /* fake a join to init the tx rate */ |
| 997 | wpi_newassoc(ni, 1); |
| 998 | } |
| 999 | |
| 1000 | /* start periodic calibration timer */ |
| 1001 | sc->calib_cnt = 0; |
| 1002 | callout_schedule(&sc->calib_to, hz/2); |
| 1003 | |
| 1004 | /* link LED always on while associated */ |
| 1005 | wpi_set_led(sc, WPI_LED_LINK, 0, 1); |
| 1006 | break; |
| 1007 | |
| 1008 | case IEEE80211_S_INIT: |
| 1009 | sc->is_scanning = false; |
| 1010 | break; |
| 1011 | } |
| 1012 | |
| 1013 | return sc->sc_newstate(ic, nstate, arg); |
| 1014 | } |
| 1015 | |
| 1016 | /* |
| 1017 | * Grab exclusive access to NIC memory. |
| 1018 | */ |
| 1019 | static void |
| 1020 | wpi_mem_lock(struct wpi_softc *sc) |
| 1021 | { |
| 1022 | uint32_t tmp; |
| 1023 | int ntries; |
| 1024 | |
| 1025 | tmp = WPI_READ(sc, WPI_GPIO_CTL); |
| 1026 | WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); |
| 1027 | |
| 1028 | /* spin until we actually get the lock */ |
| 1029 | for (ntries = 0; ntries < 1000; ntries++) { |
| 1030 | if ((WPI_READ(sc, WPI_GPIO_CTL) & |
| 1031 | (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) |
| 1032 | break; |
| 1033 | DELAY(10); |
| 1034 | } |
| 1035 | if (ntries == 1000) |
| 1036 | aprint_error_dev(sc->sc_dev, "could not lock memory\n" ); |
| 1037 | } |
| 1038 | |
| 1039 | /* |
| 1040 | * Release lock on NIC memory. |
| 1041 | */ |
| 1042 | static void |
| 1043 | wpi_mem_unlock(struct wpi_softc *sc) |
| 1044 | { |
| 1045 | uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); |
| 1046 | WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); |
| 1047 | } |
| 1048 | |
| 1049 | static uint32_t |
| 1050 | wpi_mem_read(struct wpi_softc *sc, uint16_t addr) |
| 1051 | { |
| 1052 | WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); |
| 1053 | return WPI_READ(sc, WPI_READ_MEM_DATA); |
| 1054 | } |
| 1055 | |
| 1056 | static void |
| 1057 | wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) |
| 1058 | { |
| 1059 | WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); |
| 1060 | WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); |
| 1061 | } |
| 1062 | |
| 1063 | static void |
| 1064 | wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, |
| 1065 | const uint32_t *data, int wlen) |
| 1066 | { |
| 1067 | for (; wlen > 0; wlen--, data++, addr += 4) |
| 1068 | wpi_mem_write(sc, addr, *data); |
| 1069 | } |
| 1070 | |
| 1071 | /* |
| 1072 | * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC |
| 1073 | * instead of using the traditional bit-bang method. |
| 1074 | */ |
| 1075 | static int |
| 1076 | wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) |
| 1077 | { |
| 1078 | uint8_t *out = data; |
| 1079 | uint32_t val; |
| 1080 | int ntries; |
| 1081 | |
| 1082 | wpi_mem_lock(sc); |
| 1083 | for (; len > 0; len -= 2, addr++) { |
| 1084 | WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); |
| 1085 | |
| 1086 | for (ntries = 0; ntries < 10; ntries++) { |
| 1087 | if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & |
| 1088 | WPI_EEPROM_READY) |
| 1089 | break; |
| 1090 | DELAY(5); |
| 1091 | } |
| 1092 | if (ntries == 10) { |
| 1093 | aprint_error_dev(sc->sc_dev, "could not read EEPROM\n" ); |
| 1094 | return ETIMEDOUT; |
| 1095 | } |
| 1096 | *out++ = val >> 16; |
| 1097 | if (len > 1) |
| 1098 | *out++ = val >> 24; |
| 1099 | } |
| 1100 | wpi_mem_unlock(sc); |
| 1101 | |
| 1102 | return 0; |
| 1103 | } |
| 1104 | |
| 1105 | /* |
| 1106 | * The firmware boot code is small and is intended to be copied directly into |
| 1107 | * the NIC internal memory. |
| 1108 | */ |
| 1109 | int |
| 1110 | wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) |
| 1111 | { |
| 1112 | int ntries; |
| 1113 | |
| 1114 | size /= sizeof (uint32_t); |
| 1115 | |
| 1116 | wpi_mem_lock(sc); |
| 1117 | |
| 1118 | /* copy microcode image into NIC memory */ |
| 1119 | wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, |
| 1120 | (const uint32_t *)ucode, size); |
| 1121 | |
| 1122 | wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); |
| 1123 | wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); |
| 1124 | wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); |
| 1125 | |
| 1126 | /* run microcode */ |
| 1127 | wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); |
| 1128 | |
| 1129 | /* wait for transfer to complete */ |
| 1130 | for (ntries = 0; ntries < 1000; ntries++) { |
| 1131 | if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) |
| 1132 | break; |
| 1133 | DELAY(10); |
| 1134 | } |
| 1135 | if (ntries == 1000) { |
| 1136 | wpi_mem_unlock(sc); |
| 1137 | aprint_error_dev(sc->sc_dev, "could not load boot firmware\n" ); |
| 1138 | return ETIMEDOUT; |
| 1139 | } |
| 1140 | wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); |
| 1141 | |
| 1142 | wpi_mem_unlock(sc); |
| 1143 | |
| 1144 | return 0; |
| 1145 | } |
| 1146 | |
| 1147 | static int |
| 1148 | wpi_cache_firmware(struct wpi_softc *sc) |
| 1149 | { |
| 1150 | const char *const fwname = wpi_firmware_name; |
| 1151 | firmware_handle_t fw; |
| 1152 | int error; |
| 1153 | |
| 1154 | /* sc is used here only to report error messages. */ |
| 1155 | |
| 1156 | mutex_enter(&wpi_firmware_mutex); |
| 1157 | |
| 1158 | if (wpi_firmware_users == SIZE_MAX) { |
| 1159 | mutex_exit(&wpi_firmware_mutex); |
| 1160 | return ENFILE; /* Too many of something in the system... */ |
| 1161 | } |
| 1162 | if (wpi_firmware_users++) { |
| 1163 | KASSERT(wpi_firmware_image != NULL); |
| 1164 | KASSERT(wpi_firmware_size > 0); |
| 1165 | mutex_exit(&wpi_firmware_mutex); |
| 1166 | return 0; /* Already good to go. */ |
| 1167 | } |
| 1168 | |
| 1169 | KASSERT(wpi_firmware_image == NULL); |
| 1170 | KASSERT(wpi_firmware_size == 0); |
| 1171 | |
| 1172 | /* load firmware image from disk */ |
| 1173 | if ((error = firmware_open("if_wpi" , fwname, &fw)) != 0) { |
| 1174 | aprint_error_dev(sc->sc_dev, |
| 1175 | "could not open firmware file %s: %d\n" , fwname, error); |
| 1176 | goto fail0; |
| 1177 | } |
| 1178 | |
| 1179 | wpi_firmware_size = firmware_get_size(fw); |
| 1180 | |
| 1181 | if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) + |
| 1182 | WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ + |
| 1183 | WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ + |
| 1184 | WPI_FW_BOOT_TEXT_MAXSZ) { |
| 1185 | aprint_error_dev(sc->sc_dev, |
| 1186 | "firmware file %s too large: %zu bytes\n" , |
| 1187 | fwname, wpi_firmware_size); |
| 1188 | error = EFBIG; |
| 1189 | goto fail1; |
| 1190 | } |
| 1191 | |
| 1192 | if (wpi_firmware_size < sizeof (struct wpi_firmware_hdr)) { |
| 1193 | aprint_error_dev(sc->sc_dev, |
| 1194 | "firmware file %s too small: %zu bytes\n" , |
| 1195 | fwname, wpi_firmware_size); |
| 1196 | error = EINVAL; |
| 1197 | goto fail1; |
| 1198 | } |
| 1199 | |
| 1200 | wpi_firmware_image = firmware_malloc(wpi_firmware_size); |
| 1201 | if (wpi_firmware_image == NULL) { |
| 1202 | aprint_error_dev(sc->sc_dev, |
| 1203 | "not enough memory for firmware file %s\n" , fwname); |
| 1204 | error = ENOMEM; |
| 1205 | goto fail1; |
| 1206 | } |
| 1207 | |
| 1208 | error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size); |
| 1209 | if (error != 0) { |
| 1210 | aprint_error_dev(sc->sc_dev, |
| 1211 | "error reading firmware file %s: %d\n" , fwname, error); |
| 1212 | goto fail2; |
| 1213 | } |
| 1214 | |
| 1215 | /* Success! */ |
| 1216 | firmware_close(fw); |
| 1217 | mutex_exit(&wpi_firmware_mutex); |
| 1218 | return 0; |
| 1219 | |
| 1220 | fail2: |
| 1221 | firmware_free(wpi_firmware_image, wpi_firmware_size); |
| 1222 | wpi_firmware_image = NULL; |
| 1223 | fail1: |
| 1224 | wpi_firmware_size = 0; |
| 1225 | firmware_close(fw); |
| 1226 | fail0: |
| 1227 | KASSERT(wpi_firmware_users == 1); |
| 1228 | wpi_firmware_users = 0; |
| 1229 | KASSERT(wpi_firmware_image == NULL); |
| 1230 | KASSERT(wpi_firmware_size == 0); |
| 1231 | |
| 1232 | mutex_exit(&wpi_firmware_mutex); |
| 1233 | return error; |
| 1234 | } |
| 1235 | |
| 1236 | static void |
| 1237 | wpi_release_firmware(void) |
| 1238 | { |
| 1239 | |
| 1240 | mutex_enter(&wpi_firmware_mutex); |
| 1241 | |
| 1242 | KASSERT(wpi_firmware_users > 0); |
| 1243 | KASSERT(wpi_firmware_image != NULL); |
| 1244 | KASSERT(wpi_firmware_size != 0); |
| 1245 | |
| 1246 | if (--wpi_firmware_users == 0) { |
| 1247 | firmware_free(wpi_firmware_image, wpi_firmware_size); |
| 1248 | wpi_firmware_image = NULL; |
| 1249 | wpi_firmware_size = 0; |
| 1250 | } |
| 1251 | |
| 1252 | mutex_exit(&wpi_firmware_mutex); |
| 1253 | } |
| 1254 | |
| 1255 | static int |
| 1256 | wpi_load_firmware(struct wpi_softc *sc) |
| 1257 | { |
| 1258 | struct wpi_dma_info *dma = &sc->fw_dma; |
| 1259 | struct wpi_firmware_hdr hdr; |
| 1260 | const uint8_t *init_text, *init_data, *main_text, *main_data; |
| 1261 | const uint8_t *boot_text; |
| 1262 | uint32_t init_textsz, init_datasz, main_textsz, main_datasz; |
| 1263 | uint32_t boot_textsz; |
| 1264 | size_t size; |
| 1265 | int error; |
| 1266 | |
| 1267 | if (!sc->fw_used) { |
| 1268 | if ((error = wpi_cache_firmware(sc)) != 0) |
| 1269 | return error; |
| 1270 | sc->fw_used = true; |
| 1271 | } |
| 1272 | |
| 1273 | KASSERT(sc->fw_used); |
| 1274 | KASSERT(wpi_firmware_image != NULL); |
| 1275 | KASSERT(wpi_firmware_size > sizeof(hdr)); |
| 1276 | |
| 1277 | memcpy(&hdr, wpi_firmware_image, sizeof(hdr)); |
| 1278 | |
| 1279 | main_textsz = le32toh(hdr.main_textsz); |
| 1280 | main_datasz = le32toh(hdr.main_datasz); |
| 1281 | init_textsz = le32toh(hdr.init_textsz); |
| 1282 | init_datasz = le32toh(hdr.init_datasz); |
| 1283 | boot_textsz = le32toh(hdr.boot_textsz); |
| 1284 | |
| 1285 | /* sanity-check firmware segments sizes */ |
| 1286 | if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || |
| 1287 | main_datasz > WPI_FW_MAIN_DATA_MAXSZ || |
| 1288 | init_textsz > WPI_FW_INIT_TEXT_MAXSZ || |
| 1289 | init_datasz > WPI_FW_INIT_DATA_MAXSZ || |
| 1290 | boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || |
| 1291 | (boot_textsz & 3) != 0) { |
| 1292 | aprint_error_dev(sc->sc_dev, "invalid firmware header\n" ); |
| 1293 | error = EINVAL; |
| 1294 | goto free_firmware; |
| 1295 | } |
| 1296 | |
| 1297 | /* check that all firmware segments are present */ |
| 1298 | size = sizeof (struct wpi_firmware_hdr) + main_textsz + |
| 1299 | main_datasz + init_textsz + init_datasz + boot_textsz; |
| 1300 | if (wpi_firmware_size < size) { |
| 1301 | aprint_error_dev(sc->sc_dev, |
| 1302 | "firmware file truncated: %zu bytes, expected %zu bytes\n" , |
| 1303 | wpi_firmware_size, size); |
| 1304 | error = EINVAL; |
| 1305 | goto free_firmware; |
| 1306 | } |
| 1307 | |
| 1308 | /* get pointers to firmware segments */ |
| 1309 | main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr); |
| 1310 | main_data = main_text + main_textsz; |
| 1311 | init_text = main_data + main_datasz; |
| 1312 | init_data = init_text + init_textsz; |
| 1313 | boot_text = init_data + init_datasz; |
| 1314 | |
| 1315 | /* copy initialization images into pre-allocated DMA-safe memory */ |
| 1316 | memcpy(dma->vaddr, init_data, init_datasz); |
| 1317 | memcpy((char *)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, |
| 1318 | init_textsz); |
| 1319 | |
| 1320 | bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); |
| 1321 | |
| 1322 | /* tell adapter where to find initialization images */ |
| 1323 | wpi_mem_lock(sc); |
| 1324 | wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); |
| 1325 | wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); |
| 1326 | wpi_mem_write(sc, WPI_MEM_TEXT_BASE, |
| 1327 | dma->paddr + WPI_FW_INIT_DATA_MAXSZ); |
| 1328 | wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); |
| 1329 | wpi_mem_unlock(sc); |
| 1330 | |
| 1331 | /* load firmware boot code */ |
| 1332 | if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { |
| 1333 | aprint_error_dev(sc->sc_dev, "could not load boot firmware\n" ); |
| 1334 | return error; |
| 1335 | } |
| 1336 | |
| 1337 | /* now press "execute" ;-) */ |
| 1338 | WPI_WRITE(sc, WPI_RESET, 0); |
| 1339 | |
| 1340 | /* wait at most one second for first alive notification */ |
| 1341 | if ((error = tsleep(sc, PCATCH, "wpiinit" , hz)) != 0) { |
| 1342 | /* this isn't what was supposed to happen.. */ |
| 1343 | aprint_error_dev(sc->sc_dev, |
| 1344 | "timeout waiting for adapter to initialize\n" ); |
| 1345 | } |
| 1346 | |
| 1347 | /* copy runtime images into pre-allocated DMA-safe memory */ |
| 1348 | memcpy(dma->vaddr, main_data, main_datasz); |
| 1349 | memcpy((char *)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, |
| 1350 | main_textsz); |
| 1351 | |
| 1352 | bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); |
| 1353 | |
| 1354 | /* tell adapter where to find runtime images */ |
| 1355 | wpi_mem_lock(sc); |
| 1356 | wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); |
| 1357 | wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); |
| 1358 | wpi_mem_write(sc, WPI_MEM_TEXT_BASE, |
| 1359 | dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); |
| 1360 | wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); |
| 1361 | wpi_mem_unlock(sc); |
| 1362 | |
| 1363 | /* wait at most one second for second alive notification */ |
| 1364 | if ((error = tsleep(sc, PCATCH, "wpiinit" , hz)) != 0) { |
| 1365 | /* this isn't what was supposed to happen.. */ |
| 1366 | aprint_error_dev(sc->sc_dev, |
| 1367 | "timeout waiting for adapter to initialize\n" ); |
| 1368 | } |
| 1369 | |
| 1370 | return error; |
| 1371 | |
| 1372 | free_firmware: |
| 1373 | sc->fw_used = false; |
| 1374 | wpi_release_firmware(); |
| 1375 | return error; |
| 1376 | } |
| 1377 | |
| 1378 | static void |
| 1379 | wpi_calib_timeout(void *arg) |
| 1380 | { |
| 1381 | struct wpi_softc *sc = arg; |
| 1382 | struct ieee80211com *ic = &sc->sc_ic; |
| 1383 | int temp, s; |
| 1384 | |
| 1385 | /* automatic rate control triggered every 500ms */ |
| 1386 | if (ic->ic_fixed_rate == -1) { |
| 1387 | s = splnet(); |
| 1388 | if (ic->ic_opmode == IEEE80211_M_STA) |
| 1389 | wpi_iter_func(sc, ic->ic_bss); |
| 1390 | else |
| 1391 | ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); |
| 1392 | splx(s); |
| 1393 | } |
| 1394 | |
| 1395 | /* update sensor data */ |
| 1396 | temp = (int)WPI_READ(sc, WPI_TEMPERATURE); |
| 1397 | |
| 1398 | /* automatic power calibration every 60s */ |
| 1399 | if (++sc->calib_cnt >= 120) { |
| 1400 | wpi_power_calibration(sc, temp); |
| 1401 | sc->calib_cnt = 0; |
| 1402 | } |
| 1403 | |
| 1404 | callout_schedule(&sc->calib_to, hz/2); |
| 1405 | } |
| 1406 | |
| 1407 | static void |
| 1408 | wpi_iter_func(void *arg, struct ieee80211_node *ni) |
| 1409 | { |
| 1410 | struct wpi_softc *sc = arg; |
| 1411 | struct wpi_node *wn = (struct wpi_node *)ni; |
| 1412 | |
| 1413 | ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); |
| 1414 | } |
| 1415 | |
| 1416 | /* |
| 1417 | * This function is called periodically (every 60 seconds) to adjust output |
| 1418 | * power to temperature changes. |
| 1419 | */ |
| 1420 | void |
| 1421 | wpi_power_calibration(struct wpi_softc *sc, int temp) |
| 1422 | { |
| 1423 | /* sanity-check read value */ |
| 1424 | if (temp < -260 || temp > 25) { |
| 1425 | /* this can't be correct, ignore */ |
| 1426 | DPRINTF(("out-of-range temperature reported: %d\n" , temp)); |
| 1427 | return; |
| 1428 | } |
| 1429 | |
| 1430 | DPRINTF(("temperature %d->%d\n" , sc->temp, temp)); |
| 1431 | |
| 1432 | /* adjust Tx power if need be */ |
| 1433 | if (abs(temp - sc->temp) <= 6) |
| 1434 | return; |
| 1435 | |
| 1436 | sc->temp = temp; |
| 1437 | |
| 1438 | if (wpi_set_txpower(sc, sc->sc_ic.ic_curchan, 1) != 0) { |
| 1439 | /* just warn, too bad for the automatic calibration... */ |
| 1440 | aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n" ); |
| 1441 | } |
| 1442 | } |
| 1443 | |
| 1444 | static void |
| 1445 | wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, |
| 1446 | struct wpi_rx_data *data) |
| 1447 | { |
| 1448 | struct ieee80211com *ic = &sc->sc_ic; |
| 1449 | struct ifnet *ifp = ic->ic_ifp; |
| 1450 | struct wpi_rx_ring *ring = &sc->rxq; |
| 1451 | struct wpi_rx_stat *stat; |
| 1452 | struct wpi_rx_head *head; |
| 1453 | struct wpi_rx_tail *tail; |
| 1454 | struct wpi_rbuf *rbuf; |
| 1455 | struct ieee80211_frame *wh; |
| 1456 | struct ieee80211_node *ni; |
| 1457 | struct mbuf *m, *mnew; |
| 1458 | int data_off, error; |
| 1459 | |
| 1460 | bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, |
| 1461 | BUS_DMASYNC_POSTREAD); |
| 1462 | stat = (struct wpi_rx_stat *)(desc + 1); |
| 1463 | |
| 1464 | if (stat->len > WPI_STAT_MAXLEN) { |
| 1465 | aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n" ); |
| 1466 | ifp->if_ierrors++; |
| 1467 | return; |
| 1468 | } |
| 1469 | |
| 1470 | head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); |
| 1471 | tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); |
| 1472 | |
| 1473 | DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " |
| 1474 | "chan=%d tstamp=%" PRIu64 "\n" , ring->cur, le32toh(desc->len), |
| 1475 | le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, |
| 1476 | le64toh(tail->tstamp))); |
| 1477 | |
| 1478 | /* |
| 1479 | * Discard Rx frames with bad CRC early (XXX we may want to pass them |
| 1480 | * to radiotap in monitor mode). |
| 1481 | */ |
| 1482 | if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { |
| 1483 | DPRINTF(("rx tail flags error %x\n" , |
| 1484 | le32toh(tail->flags))); |
| 1485 | ifp->if_ierrors++; |
| 1486 | return; |
| 1487 | } |
| 1488 | |
| 1489 | /* Compute where are the useful datas */ |
| 1490 | data_off = (char*)(head + 1) - mtod(data->m, char*); |
| 1491 | |
| 1492 | MGETHDR(mnew, M_DONTWAIT, MT_DATA); |
| 1493 | if (mnew == NULL) { |
| 1494 | ifp->if_ierrors++; |
| 1495 | return; |
| 1496 | } |
| 1497 | |
| 1498 | rbuf = wpi_alloc_rbuf(sc); |
| 1499 | if (rbuf == NULL) { |
| 1500 | m_freem(mnew); |
| 1501 | ifp->if_ierrors++; |
| 1502 | return; |
| 1503 | } |
| 1504 | |
| 1505 | /* attach Rx buffer to mbuf */ |
| 1506 | MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, |
| 1507 | rbuf); |
| 1508 | mnew->m_flags |= M_EXT_RW; |
| 1509 | |
| 1510 | bus_dmamap_unload(sc->sc_dmat, data->map); |
| 1511 | |
| 1512 | error = bus_dmamap_load(sc->sc_dmat, data->map, |
| 1513 | mtod(mnew, void *), WPI_RBUF_SIZE, NULL, |
| 1514 | BUS_DMA_NOWAIT | BUS_DMA_READ); |
| 1515 | if (error) { |
| 1516 | device_printf(sc->sc_dev, |
| 1517 | "couldn't load rx mbuf: %d\n" , error); |
| 1518 | m_freem(mnew); |
| 1519 | ifp->if_ierrors++; |
| 1520 | |
| 1521 | error = bus_dmamap_load(sc->sc_dmat, data->map, |
| 1522 | mtod(data->m, void *), WPI_RBUF_SIZE, NULL, |
| 1523 | BUS_DMA_NOWAIT | BUS_DMA_READ); |
| 1524 | if (error) |
| 1525 | panic("%s: bus_dmamap_load failed: %d\n" , |
| 1526 | device_xname(sc->sc_dev), error); |
| 1527 | return; |
| 1528 | } |
| 1529 | |
| 1530 | /* new mbuf loaded successfully */ |
| 1531 | m = data->m; |
| 1532 | data->m = mnew; |
| 1533 | |
| 1534 | /* update Rx descriptor */ |
| 1535 | ring->desc[ring->cur] = htole32(rbuf->paddr); |
| 1536 | bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, |
| 1537 | ring->desc_dma.size, |
| 1538 | BUS_DMASYNC_PREWRITE); |
| 1539 | |
| 1540 | m->m_data = (char*)m->m_data + data_off; |
| 1541 | m->m_pkthdr.len = m->m_len = le16toh(head->len); |
| 1542 | |
| 1543 | /* finalize mbuf */ |
| 1544 | m_set_rcvif(m, ifp); |
| 1545 | |
| 1546 | if (sc->sc_drvbpf != NULL) { |
| 1547 | struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; |
| 1548 | |
| 1549 | tap->wr_flags = 0; |
| 1550 | tap->wr_chan_freq = |
| 1551 | htole16(ic->ic_channels[head->chan].ic_freq); |
| 1552 | tap->wr_chan_flags = |
| 1553 | htole16(ic->ic_channels[head->chan].ic_flags); |
| 1554 | tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); |
| 1555 | tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); |
| 1556 | tap->wr_tsft = tail->tstamp; |
| 1557 | tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; |
| 1558 | switch (head->rate) { |
| 1559 | /* CCK rates */ |
| 1560 | case 10: tap->wr_rate = 2; break; |
| 1561 | case 20: tap->wr_rate = 4; break; |
| 1562 | case 55: tap->wr_rate = 11; break; |
| 1563 | case 110: tap->wr_rate = 22; break; |
| 1564 | /* OFDM rates */ |
| 1565 | case 0xd: tap->wr_rate = 12; break; |
| 1566 | case 0xf: tap->wr_rate = 18; break; |
| 1567 | case 0x5: tap->wr_rate = 24; break; |
| 1568 | case 0x7: tap->wr_rate = 36; break; |
| 1569 | case 0x9: tap->wr_rate = 48; break; |
| 1570 | case 0xb: tap->wr_rate = 72; break; |
| 1571 | case 0x1: tap->wr_rate = 96; break; |
| 1572 | case 0x3: tap->wr_rate = 108; break; |
| 1573 | /* unknown rate: should not happen */ |
| 1574 | default: tap->wr_rate = 0; |
| 1575 | } |
| 1576 | if (le16toh(head->flags) & 0x4) |
| 1577 | tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; |
| 1578 | |
| 1579 | bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); |
| 1580 | } |
| 1581 | |
| 1582 | /* grab a reference to the source node */ |
| 1583 | wh = mtod(m, struct ieee80211_frame *); |
| 1584 | ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); |
| 1585 | |
| 1586 | /* send the frame to the 802.11 layer */ |
| 1587 | ieee80211_input(ic, m, ni, stat->rssi, 0); |
| 1588 | |
| 1589 | /* release node reference */ |
| 1590 | ieee80211_free_node(ni); |
| 1591 | } |
| 1592 | |
| 1593 | static void |
| 1594 | wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) |
| 1595 | { |
| 1596 | struct ifnet *ifp = sc->sc_ic.ic_ifp; |
| 1597 | struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; |
| 1598 | struct wpi_tx_data *data = &ring->data[desc->idx]; |
| 1599 | struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); |
| 1600 | struct wpi_node *wn = (struct wpi_node *)data->ni; |
| 1601 | |
| 1602 | DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " |
| 1603 | "duration=%d status=%x\n" , desc->qid, desc->idx, stat->ntries, |
| 1604 | stat->nkill, stat->rate, le32toh(stat->duration), |
| 1605 | le32toh(stat->status))); |
| 1606 | |
| 1607 | /* |
| 1608 | * Update rate control statistics for the node. |
| 1609 | * XXX we should not count mgmt frames since they're always sent at |
| 1610 | * the lowest available bit-rate. |
| 1611 | */ |
| 1612 | wn->amn.amn_txcnt++; |
| 1613 | if (stat->ntries > 0) { |
| 1614 | DPRINTFN(3, ("tx intr ntries %d\n" , stat->ntries)); |
| 1615 | wn->amn.amn_retrycnt++; |
| 1616 | } |
| 1617 | |
| 1618 | if ((le32toh(stat->status) & 0xff) != 1) |
| 1619 | ifp->if_oerrors++; |
| 1620 | else |
| 1621 | ifp->if_opackets++; |
| 1622 | |
| 1623 | bus_dmamap_unload(sc->sc_dmat, data->map); |
| 1624 | m_freem(data->m); |
| 1625 | data->m = NULL; |
| 1626 | ieee80211_free_node(data->ni); |
| 1627 | data->ni = NULL; |
| 1628 | |
| 1629 | ring->queued--; |
| 1630 | |
| 1631 | sc->sc_tx_timer = 0; |
| 1632 | ifp->if_flags &= ~IFF_OACTIVE; |
| 1633 | wpi_start(ifp); |
| 1634 | } |
| 1635 | |
| 1636 | static void |
| 1637 | wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) |
| 1638 | { |
| 1639 | struct wpi_tx_ring *ring = &sc->cmdq; |
| 1640 | struct wpi_tx_data *data; |
| 1641 | |
| 1642 | if ((desc->qid & 7) != 4) |
| 1643 | return; /* not a command ack */ |
| 1644 | |
| 1645 | data = &ring->data[desc->idx]; |
| 1646 | |
| 1647 | /* if the command was mapped in a mbuf, free it */ |
| 1648 | if (data->m != NULL) { |
| 1649 | bus_dmamap_unload(sc->sc_dmat, data->map); |
| 1650 | m_freem(data->m); |
| 1651 | data->m = NULL; |
| 1652 | } |
| 1653 | |
| 1654 | wakeup(&ring->cmd[desc->idx]); |
| 1655 | } |
| 1656 | |
| 1657 | static void |
| 1658 | wpi_notif_intr(struct wpi_softc *sc) |
| 1659 | { |
| 1660 | struct ieee80211com *ic = &sc->sc_ic; |
| 1661 | struct ifnet *ifp = ic->ic_ifp; |
| 1662 | uint32_t hw; |
| 1663 | |
| 1664 | bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, |
| 1665 | sizeof(struct wpi_shared), BUS_DMASYNC_POSTREAD); |
| 1666 | |
| 1667 | hw = le32toh(sc->shared->next); |
| 1668 | while (sc->rxq.cur != hw) { |
| 1669 | struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; |
| 1670 | struct wpi_rx_desc *desc; |
| 1671 | |
| 1672 | bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, |
| 1673 | BUS_DMASYNC_POSTREAD); |
| 1674 | desc = mtod(data->m, struct wpi_rx_desc *); |
| 1675 | |
| 1676 | DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " |
| 1677 | "len=%d\n" , desc->qid, desc->idx, desc->flags, |
| 1678 | desc->type, le32toh(desc->len))); |
| 1679 | |
| 1680 | if (!(desc->qid & 0x80)) /* reply to a command */ |
| 1681 | wpi_cmd_intr(sc, desc); |
| 1682 | |
| 1683 | switch (desc->type) { |
| 1684 | case WPI_RX_DONE: |
| 1685 | /* a 802.11 frame was received */ |
| 1686 | wpi_rx_intr(sc, desc, data); |
| 1687 | break; |
| 1688 | |
| 1689 | case WPI_TX_DONE: |
| 1690 | /* a 802.11 frame has been transmitted */ |
| 1691 | wpi_tx_intr(sc, desc); |
| 1692 | break; |
| 1693 | |
| 1694 | case WPI_UC_READY: |
| 1695 | { |
| 1696 | struct wpi_ucode_info *uc = |
| 1697 | (struct wpi_ucode_info *)(desc + 1); |
| 1698 | |
| 1699 | /* the microcontroller is ready */ |
| 1700 | DPRINTF(("microcode alive notification version %x " |
| 1701 | "alive %x\n" , le32toh(uc->version), |
| 1702 | le32toh(uc->valid))); |
| 1703 | |
| 1704 | if (le32toh(uc->valid) != 1) { |
| 1705 | aprint_error_dev(sc->sc_dev, |
| 1706 | "microcontroller initialization failed\n" ); |
| 1707 | } |
| 1708 | break; |
| 1709 | } |
| 1710 | case WPI_STATE_CHANGED: |
| 1711 | { |
| 1712 | uint32_t *status = (uint32_t *)(desc + 1); |
| 1713 | |
| 1714 | /* enabled/disabled notification */ |
| 1715 | DPRINTF(("state changed to %x\n" , le32toh(*status))); |
| 1716 | |
| 1717 | if (le32toh(*status) & 1) { |
| 1718 | /* the radio button has to be pushed */ |
| 1719 | /* wake up thread to signal powerd */ |
| 1720 | cv_signal(&sc->sc_rsw_cv); |
| 1721 | aprint_error_dev(sc->sc_dev, |
| 1722 | "Radio transmitter is off\n" ); |
| 1723 | /* turn the interface down */ |
| 1724 | ifp->if_flags &= ~IFF_UP; |
| 1725 | wpi_stop(ifp, 1); |
| 1726 | return; /* no further processing */ |
| 1727 | } |
| 1728 | break; |
| 1729 | } |
| 1730 | case WPI_START_SCAN: |
| 1731 | { |
| 1732 | #if 0 |
| 1733 | struct wpi_start_scan *scan = |
| 1734 | (struct wpi_start_scan *)(desc + 1); |
| 1735 | |
| 1736 | DPRINTFN(2, ("scanning channel %d status %x\n" , |
| 1737 | scan->chan, le32toh(scan->status))); |
| 1738 | |
| 1739 | /* fix current channel */ |
| 1740 | ic->ic_curchan = &ic->ic_channels[scan->chan]; |
| 1741 | #endif |
| 1742 | break; |
| 1743 | } |
| 1744 | case WPI_STOP_SCAN: |
| 1745 | { |
| 1746 | #ifdef WPI_DEBUG |
| 1747 | struct wpi_stop_scan *scan = |
| 1748 | (struct wpi_stop_scan *)(desc + 1); |
| 1749 | #endif |
| 1750 | |
| 1751 | DPRINTF(("scan finished nchan=%d status=%d chan=%d\n" , |
| 1752 | scan->nchan, scan->status, scan->chan)); |
| 1753 | |
| 1754 | sc->is_scanning = false; |
| 1755 | if (ic->ic_state == IEEE80211_S_SCAN) |
| 1756 | ieee80211_next_scan(ic); |
| 1757 | |
| 1758 | break; |
| 1759 | } |
| 1760 | } |
| 1761 | |
| 1762 | sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; |
| 1763 | } |
| 1764 | |
| 1765 | /* tell the firmware what we have processed */ |
| 1766 | hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; |
| 1767 | WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); |
| 1768 | } |
| 1769 | |
| 1770 | static int |
| 1771 | wpi_intr(void *arg) |
| 1772 | { |
| 1773 | struct wpi_softc *sc = arg; |
| 1774 | struct ifnet *ifp = sc->sc_ic.ic_ifp; |
| 1775 | uint32_t r; |
| 1776 | |
| 1777 | r = WPI_READ(sc, WPI_INTR); |
| 1778 | if (r == 0 || r == 0xffffffff) |
| 1779 | return 0; /* not for us */ |
| 1780 | |
| 1781 | DPRINTFN(6, ("interrupt reg %x\n" , r)); |
| 1782 | |
| 1783 | /* disable interrupts */ |
| 1784 | WPI_WRITE(sc, WPI_MASK, 0); |
| 1785 | /* ack interrupts */ |
| 1786 | WPI_WRITE(sc, WPI_INTR, r); |
| 1787 | |
| 1788 | if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { |
| 1789 | /* SYSTEM FAILURE, SYSTEM FAILURE */ |
| 1790 | aprint_error_dev(sc->sc_dev, "fatal firmware error\n" ); |
| 1791 | ifp->if_flags &= ~IFF_UP; |
| 1792 | wpi_stop(ifp, 1); |
| 1793 | return 1; |
| 1794 | } |
| 1795 | |
| 1796 | if (r & WPI_RX_INTR) |
| 1797 | wpi_notif_intr(sc); |
| 1798 | |
| 1799 | if (r & WPI_ALIVE_INTR) /* firmware initialized */ |
| 1800 | wakeup(sc); |
| 1801 | |
| 1802 | /* re-enable interrupts */ |
| 1803 | if (ifp->if_flags & IFF_UP) |
| 1804 | WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); |
| 1805 | |
| 1806 | return 1; |
| 1807 | } |
| 1808 | |
| 1809 | static uint8_t |
| 1810 | wpi_plcp_signal(int rate) |
| 1811 | { |
| 1812 | switch (rate) { |
| 1813 | /* CCK rates (returned values are device-dependent) */ |
| 1814 | case 2: return 10; |
| 1815 | case 4: return 20; |
| 1816 | case 11: return 55; |
| 1817 | case 22: return 110; |
| 1818 | |
| 1819 | /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ |
| 1820 | /* R1-R4, (u)ral is R4-R1 */ |
| 1821 | case 12: return 0xd; |
| 1822 | case 18: return 0xf; |
| 1823 | case 24: return 0x5; |
| 1824 | case 36: return 0x7; |
| 1825 | case 48: return 0x9; |
| 1826 | case 72: return 0xb; |
| 1827 | case 96: return 0x1; |
| 1828 | case 108: return 0x3; |
| 1829 | |
| 1830 | /* unsupported rates (should not get there) */ |
| 1831 | default: return 0; |
| 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | /* quickly determine if a given rate is CCK or OFDM */ |
| 1836 | #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) |
| 1837 | |
| 1838 | static int |
| 1839 | wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, |
| 1840 | int ac) |
| 1841 | { |
| 1842 | struct ieee80211com *ic = &sc->sc_ic; |
| 1843 | struct wpi_tx_ring *ring = &sc->txq[ac]; |
| 1844 | struct wpi_tx_desc *desc; |
| 1845 | struct wpi_tx_data *data; |
| 1846 | struct wpi_tx_cmd *cmd; |
| 1847 | struct wpi_cmd_data *tx; |
| 1848 | struct ieee80211_frame *wh; |
| 1849 | struct ieee80211_key *k; |
| 1850 | const struct chanAccParams *cap; |
| 1851 | struct mbuf *mnew; |
| 1852 | int i, rate, error, hdrlen, noack = 0; |
| 1853 | |
| 1854 | desc = &ring->desc[ring->cur]; |
| 1855 | data = &ring->data[ring->cur]; |
| 1856 | |
| 1857 | wh = mtod(m0, struct ieee80211_frame *); |
| 1858 | |
| 1859 | if (ieee80211_has_qos(wh)) { |
| 1860 | cap = &ic->ic_wme.wme_chanParams; |
| 1861 | noack = cap->cap_wmeParams[ac].wmep_noackPolicy; |
| 1862 | } |
| 1863 | |
| 1864 | if (wh->i_fc[1] & IEEE80211_FC1_WEP) { |
| 1865 | k = ieee80211_crypto_encap(ic, ni, m0); |
| 1866 | if (k == NULL) { |
| 1867 | m_freem(m0); |
| 1868 | return ENOBUFS; |
| 1869 | } |
| 1870 | |
| 1871 | /* packet header may have moved, reset our local pointer */ |
| 1872 | wh = mtod(m0, struct ieee80211_frame *); |
| 1873 | } |
| 1874 | |
| 1875 | hdrlen = ieee80211_anyhdrsize(wh); |
| 1876 | |
| 1877 | /* pickup a rate */ |
| 1878 | if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == |
| 1879 | IEEE80211_FC0_TYPE_MGT) { |
| 1880 | /* mgmt frames are sent at the lowest available bit-rate */ |
| 1881 | rate = ni->ni_rates.rs_rates[0]; |
| 1882 | } else { |
| 1883 | if (ic->ic_fixed_rate != -1) { |
| 1884 | rate = ic->ic_sup_rates[ic->ic_curmode]. |
| 1885 | rs_rates[ic->ic_fixed_rate]; |
| 1886 | } else |
| 1887 | rate = ni->ni_rates.rs_rates[ni->ni_txrate]; |
| 1888 | } |
| 1889 | rate &= IEEE80211_RATE_VAL; |
| 1890 | |
| 1891 | if (sc->sc_drvbpf != NULL) { |
| 1892 | struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; |
| 1893 | |
| 1894 | tap->wt_flags = 0; |
| 1895 | tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); |
| 1896 | tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); |
| 1897 | tap->wt_rate = rate; |
| 1898 | tap->wt_hwqueue = ac; |
| 1899 | if (wh->i_fc[1] & IEEE80211_FC1_WEP) |
| 1900 | tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; |
| 1901 | |
| 1902 | bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); |
| 1903 | } |
| 1904 | |
| 1905 | cmd = &ring->cmd[ring->cur]; |
| 1906 | cmd->code = WPI_CMD_TX_DATA; |
| 1907 | cmd->flags = 0; |
| 1908 | cmd->qid = ring->qid; |
| 1909 | cmd->idx = ring->cur; |
| 1910 | |
| 1911 | tx = (struct wpi_cmd_data *)cmd->data; |
| 1912 | /* no need to zero tx, all fields are reinitialized here */ |
| 1913 | tx->flags = 0; |
| 1914 | |
| 1915 | if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { |
| 1916 | tx->flags |= htole32(WPI_TX_NEED_ACK); |
| 1917 | } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) |
| 1918 | tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); |
| 1919 | |
| 1920 | tx->flags |= htole32(WPI_TX_AUTO_SEQ); |
| 1921 | |
| 1922 | /* retrieve destination node's id */ |
| 1923 | tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : |
| 1924 | WPI_ID_BSS; |
| 1925 | |
| 1926 | if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == |
| 1927 | IEEE80211_FC0_TYPE_MGT) { |
| 1928 | /* tell h/w to set timestamp in probe responses */ |
| 1929 | if ((wh->i_fc[0] & |
| 1930 | (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == |
| 1931 | (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) |
| 1932 | tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); |
| 1933 | |
| 1934 | if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == |
| 1935 | IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || |
| 1936 | ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == |
| 1937 | IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) |
| 1938 | tx->timeout = htole16(3); |
| 1939 | else |
| 1940 | tx->timeout = htole16(2); |
| 1941 | } else |
| 1942 | tx->timeout = htole16(0); |
| 1943 | |
| 1944 | tx->rate = wpi_plcp_signal(rate); |
| 1945 | |
| 1946 | /* be very persistant at sending frames out */ |
| 1947 | tx->rts_ntries = 7; |
| 1948 | tx->data_ntries = 15; |
| 1949 | |
| 1950 | tx->ofdm_mask = 0xff; |
| 1951 | tx->cck_mask = 0x0f; |
| 1952 | tx->lifetime = htole32(WPI_LIFETIME_INFINITE); |
| 1953 | |
| 1954 | tx->len = htole16(m0->m_pkthdr.len); |
| 1955 | |
| 1956 | /* save and trim IEEE802.11 header */ |
| 1957 | memcpy((uint8_t *)(tx + 1), wh, hdrlen); |
| 1958 | m_adj(m0, hdrlen); |
| 1959 | |
| 1960 | error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, |
| 1961 | BUS_DMA_WRITE | BUS_DMA_NOWAIT); |
| 1962 | if (error != 0 && error != EFBIG) { |
| 1963 | aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n" , |
| 1964 | error); |
| 1965 | m_freem(m0); |
| 1966 | return error; |
| 1967 | } |
| 1968 | if (error != 0) { |
| 1969 | /* too many fragments, linearize */ |
| 1970 | |
| 1971 | MGETHDR(mnew, M_DONTWAIT, MT_DATA); |
| 1972 | if (mnew == NULL) { |
| 1973 | m_freem(m0); |
| 1974 | return ENOMEM; |
| 1975 | } |
| 1976 | M_COPY_PKTHDR(mnew, m0); |
| 1977 | if (m0->m_pkthdr.len > MHLEN) { |
| 1978 | MCLGET(mnew, M_DONTWAIT); |
| 1979 | if (!(mnew->m_flags & M_EXT)) { |
| 1980 | m_freem(m0); |
| 1981 | m_freem(mnew); |
| 1982 | return ENOMEM; |
| 1983 | } |
| 1984 | } |
| 1985 | |
| 1986 | m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); |
| 1987 | m_freem(m0); |
| 1988 | mnew->m_len = mnew->m_pkthdr.len; |
| 1989 | m0 = mnew; |
| 1990 | |
| 1991 | error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, |
| 1992 | BUS_DMA_WRITE | BUS_DMA_NOWAIT); |
| 1993 | if (error != 0) { |
| 1994 | aprint_error_dev(sc->sc_dev, |
| 1995 | "could not map mbuf (error %d)\n" , error); |
| 1996 | m_freem(m0); |
| 1997 | return error; |
| 1998 | } |
| 1999 | } |
| 2000 | |
| 2001 | data->m = m0; |
| 2002 | data->ni = ni; |
| 2003 | |
| 2004 | DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n" , |
| 2005 | ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); |
| 2006 | |
| 2007 | /* first scatter/gather segment is used by the tx data command */ |
| 2008 | desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | |
| 2009 | (1 + data->map->dm_nsegs) << 24); |
| 2010 | desc->segs[0].addr = htole32(ring->cmd_dma.paddr + |
| 2011 | ring->cur * sizeof (struct wpi_tx_cmd)); |
| 2012 | desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + |
| 2013 | ((hdrlen + 3) & ~3)); |
| 2014 | for (i = 1; i <= data->map->dm_nsegs; i++) { |
| 2015 | desc->segs[i].addr = |
| 2016 | htole32(data->map->dm_segs[i - 1].ds_addr); |
| 2017 | desc->segs[i].len = |
| 2018 | htole32(data->map->dm_segs[i - 1].ds_len); |
| 2019 | } |
| 2020 | |
| 2021 | ring->queued++; |
| 2022 | |
| 2023 | bus_dmamap_sync(sc->sc_dmat, data->map, 0, |
| 2024 | data->map->dm_mapsize, |
| 2025 | BUS_DMASYNC_PREWRITE); |
| 2026 | bus_dmamap_sync(sc->sc_dmat, ring->cmd_dma.map, 0, |
| 2027 | ring->cmd_dma.size, |
| 2028 | BUS_DMASYNC_PREWRITE); |
| 2029 | bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, |
| 2030 | ring->desc_dma.size, |
| 2031 | BUS_DMASYNC_PREWRITE); |
| 2032 | |
| 2033 | /* kick ring */ |
| 2034 | ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; |
| 2035 | WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); |
| 2036 | |
| 2037 | return 0; |
| 2038 | } |
| 2039 | |
| 2040 | static void |
| 2041 | wpi_start(struct ifnet *ifp) |
| 2042 | { |
| 2043 | struct wpi_softc *sc = ifp->if_softc; |
| 2044 | struct ieee80211com *ic = &sc->sc_ic; |
| 2045 | struct ieee80211_node *ni; |
| 2046 | struct ether_header *eh; |
| 2047 | struct mbuf *m0; |
| 2048 | int ac; |
| 2049 | |
| 2050 | /* |
| 2051 | * net80211 may still try to send management frames even if the |
| 2052 | * IFF_RUNNING flag is not set... |
| 2053 | */ |
| 2054 | if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) |
| 2055 | return; |
| 2056 | |
| 2057 | for (;;) { |
| 2058 | IF_DEQUEUE(&ic->ic_mgtq, m0); |
| 2059 | if (m0 != NULL) { |
| 2060 | |
| 2061 | ni = M_GETCTX(m0, struct ieee80211_node *); |
| 2062 | M_CLEARCTX(m0); |
| 2063 | |
| 2064 | /* management frames go into ring 0 */ |
| 2065 | if (sc->txq[0].queued > sc->txq[0].count - 8) { |
| 2066 | ifp->if_oerrors++; |
| 2067 | continue; |
| 2068 | } |
| 2069 | bpf_mtap3(ic->ic_rawbpf, m0); |
| 2070 | if (wpi_tx_data(sc, m0, ni, 0) != 0) { |
| 2071 | ifp->if_oerrors++; |
| 2072 | break; |
| 2073 | } |
| 2074 | } else { |
| 2075 | if (ic->ic_state != IEEE80211_S_RUN) |
| 2076 | break; |
| 2077 | IFQ_POLL(&ifp->if_snd, m0); |
| 2078 | if (m0 == NULL) |
| 2079 | break; |
| 2080 | |
| 2081 | if (m0->m_len < sizeof (*eh) && |
| 2082 | (m0 = m_pullup(m0, sizeof (*eh))) == NULL) { |
| 2083 | ifp->if_oerrors++; |
| 2084 | continue; |
| 2085 | } |
| 2086 | eh = mtod(m0, struct ether_header *); |
| 2087 | ni = ieee80211_find_txnode(ic, eh->ether_dhost); |
| 2088 | if (ni == NULL) { |
| 2089 | m_freem(m0); |
| 2090 | ifp->if_oerrors++; |
| 2091 | continue; |
| 2092 | } |
| 2093 | |
| 2094 | /* classify mbuf so we can find which tx ring to use */ |
| 2095 | if (ieee80211_classify(ic, m0, ni) != 0) { |
| 2096 | m_freem(m0); |
| 2097 | ieee80211_free_node(ni); |
| 2098 | ifp->if_oerrors++; |
| 2099 | continue; |
| 2100 | } |
| 2101 | |
| 2102 | /* no QoS encapsulation for EAPOL frames */ |
| 2103 | ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? |
| 2104 | M_WME_GETAC(m0) : WME_AC_BE; |
| 2105 | |
| 2106 | if (sc->txq[ac].queued > sc->txq[ac].count - 8) { |
| 2107 | /* there is no place left in this ring */ |
| 2108 | ifp->if_flags |= IFF_OACTIVE; |
| 2109 | break; |
| 2110 | } |
| 2111 | IFQ_DEQUEUE(&ifp->if_snd, m0); |
| 2112 | bpf_mtap(ifp, m0); |
| 2113 | m0 = ieee80211_encap(ic, m0, ni); |
| 2114 | if (m0 == NULL) { |
| 2115 | ieee80211_free_node(ni); |
| 2116 | ifp->if_oerrors++; |
| 2117 | continue; |
| 2118 | } |
| 2119 | bpf_mtap3(ic->ic_rawbpf, m0); |
| 2120 | if (wpi_tx_data(sc, m0, ni, ac) != 0) { |
| 2121 | ieee80211_free_node(ni); |
| 2122 | ifp->if_oerrors++; |
| 2123 | break; |
| 2124 | } |
| 2125 | } |
| 2126 | |
| 2127 | sc->sc_tx_timer = 5; |
| 2128 | ifp->if_timer = 1; |
| 2129 | } |
| 2130 | } |
| 2131 | |
| 2132 | static void |
| 2133 | wpi_watchdog(struct ifnet *ifp) |
| 2134 | { |
| 2135 | struct wpi_softc *sc = ifp->if_softc; |
| 2136 | |
| 2137 | ifp->if_timer = 0; |
| 2138 | |
| 2139 | if (sc->sc_tx_timer > 0) { |
| 2140 | if (--sc->sc_tx_timer == 0) { |
| 2141 | aprint_error_dev(sc->sc_dev, "device timeout\n" ); |
| 2142 | ifp->if_flags &= ~IFF_UP; |
| 2143 | wpi_stop(ifp, 1); |
| 2144 | ifp->if_oerrors++; |
| 2145 | return; |
| 2146 | } |
| 2147 | ifp->if_timer = 1; |
| 2148 | } |
| 2149 | |
| 2150 | ieee80211_watchdog(&sc->sc_ic); |
| 2151 | } |
| 2152 | |
| 2153 | static int |
| 2154 | wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) |
| 2155 | { |
| 2156 | #define IS_RUNNING(ifp) \ |
| 2157 | ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) |
| 2158 | |
| 2159 | struct wpi_softc *sc = ifp->if_softc; |
| 2160 | struct ieee80211com *ic = &sc->sc_ic; |
| 2161 | int s, error = 0; |
| 2162 | |
| 2163 | s = splnet(); |
| 2164 | |
| 2165 | switch (cmd) { |
| 2166 | case SIOCSIFFLAGS: |
| 2167 | if ((error = ifioctl_common(ifp, cmd, data)) != 0) |
| 2168 | break; |
| 2169 | if (ifp->if_flags & IFF_UP) { |
| 2170 | if (!(ifp->if_flags & IFF_RUNNING)) |
| 2171 | wpi_init(ifp); |
| 2172 | } else { |
| 2173 | if (ifp->if_flags & IFF_RUNNING) |
| 2174 | wpi_stop(ifp, 1); |
| 2175 | } |
| 2176 | break; |
| 2177 | |
| 2178 | case SIOCADDMULTI: |
| 2179 | case SIOCDELMULTI: |
| 2180 | /* XXX no h/w multicast filter? --dyoung */ |
| 2181 | if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { |
| 2182 | /* setup multicast filter, etc */ |
| 2183 | error = 0; |
| 2184 | } |
| 2185 | break; |
| 2186 | |
| 2187 | default: |
| 2188 | error = ieee80211_ioctl(ic, cmd, data); |
| 2189 | } |
| 2190 | |
| 2191 | if (error == ENETRESET) { |
| 2192 | if (IS_RUNNING(ifp) && |
| 2193 | (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) |
| 2194 | wpi_init(ifp); |
| 2195 | error = 0; |
| 2196 | } |
| 2197 | |
| 2198 | splx(s); |
| 2199 | return error; |
| 2200 | |
| 2201 | #undef IS_RUNNING |
| 2202 | } |
| 2203 | |
| 2204 | /* |
| 2205 | * Extract various information from EEPROM. |
| 2206 | */ |
| 2207 | static void |
| 2208 | wpi_read_eeprom(struct wpi_softc *sc) |
| 2209 | { |
| 2210 | struct ieee80211com *ic = &sc->sc_ic; |
| 2211 | char domain[4]; |
| 2212 | int i; |
| 2213 | |
| 2214 | wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); |
| 2215 | wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); |
| 2216 | wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); |
| 2217 | |
| 2218 | DPRINTF(("cap=%x rev=%x type=%x\n" , sc->cap, le16toh(sc->rev), |
| 2219 | sc->type)); |
| 2220 | |
| 2221 | /* read and print regulatory domain */ |
| 2222 | wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); |
| 2223 | aprint_normal_dev(sc->sc_dev, "%.4s" , domain); |
| 2224 | |
| 2225 | /* read and print MAC address */ |
| 2226 | wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); |
| 2227 | aprint_normal(", address %s\n" , ether_sprintf(ic->ic_myaddr)); |
| 2228 | |
| 2229 | /* read the list of authorized channels */ |
| 2230 | for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) |
| 2231 | wpi_read_eeprom_channels(sc, i); |
| 2232 | |
| 2233 | /* read the list of power groups */ |
| 2234 | for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) |
| 2235 | wpi_read_eeprom_group(sc, i); |
| 2236 | } |
| 2237 | |
| 2238 | static void |
| 2239 | wpi_read_eeprom_channels(struct wpi_softc *sc, int n) |
| 2240 | { |
| 2241 | struct ieee80211com *ic = &sc->sc_ic; |
| 2242 | const struct wpi_chan_band *band = &wpi_bands[n]; |
| 2243 | struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; |
| 2244 | int chan, i; |
| 2245 | |
| 2246 | wpi_read_prom_data(sc, band->addr, channels, |
| 2247 | band->nchan * sizeof (struct wpi_eeprom_chan)); |
| 2248 | |
| 2249 | for (i = 0; i < band->nchan; i++) { |
| 2250 | if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) |
| 2251 | continue; |
| 2252 | |
| 2253 | chan = band->chan[i]; |
| 2254 | |
| 2255 | if (n == 0) { /* 2GHz band */ |
| 2256 | ic->ic_channels[chan].ic_freq = |
| 2257 | ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); |
| 2258 | ic->ic_channels[chan].ic_flags = |
| 2259 | IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | |
| 2260 | IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; |
| 2261 | |
| 2262 | } else { /* 5GHz band */ |
| 2263 | /* |
| 2264 | * Some 3945ABG adapters support channels 7, 8, 11 |
| 2265 | * and 12 in the 2GHz *and* 5GHz bands. |
| 2266 | * Because of limitations in our net80211(9) stack, |
| 2267 | * we can't support these channels in 5GHz band. |
| 2268 | */ |
| 2269 | if (chan <= 14) |
| 2270 | continue; |
| 2271 | |
| 2272 | ic->ic_channels[chan].ic_freq = |
| 2273 | ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); |
| 2274 | ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; |
| 2275 | } |
| 2276 | |
| 2277 | /* is active scan allowed on this channel? */ |
| 2278 | if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { |
| 2279 | ic->ic_channels[chan].ic_flags |= |
| 2280 | IEEE80211_CHAN_PASSIVE; |
| 2281 | } |
| 2282 | |
| 2283 | /* save maximum allowed power for this channel */ |
| 2284 | sc->maxpwr[chan] = channels[i].maxpwr; |
| 2285 | |
| 2286 | DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n" , |
| 2287 | chan, channels[i].flags, sc->maxpwr[chan])); |
| 2288 | } |
| 2289 | } |
| 2290 | |
| 2291 | static void |
| 2292 | wpi_read_eeprom_group(struct wpi_softc *sc, int n) |
| 2293 | { |
| 2294 | struct wpi_power_group *group = &sc->groups[n]; |
| 2295 | struct wpi_eeprom_group rgroup; |
| 2296 | int i; |
| 2297 | |
| 2298 | wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, |
| 2299 | sizeof rgroup); |
| 2300 | |
| 2301 | /* save power group information */ |
| 2302 | group->chan = rgroup.chan; |
| 2303 | group->maxpwr = rgroup.maxpwr; |
| 2304 | /* temperature at which the samples were taken */ |
| 2305 | group->temp = (int16_t)le16toh(rgroup.temp); |
| 2306 | |
| 2307 | DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n" , n, |
| 2308 | group->chan, group->maxpwr, group->temp)); |
| 2309 | |
| 2310 | for (i = 0; i < WPI_SAMPLES_COUNT; i++) { |
| 2311 | group->samples[i].index = rgroup.samples[i].index; |
| 2312 | group->samples[i].power = rgroup.samples[i].power; |
| 2313 | |
| 2314 | DPRINTF(("\tsample %d: index=%d power=%d\n" , i, |
| 2315 | group->samples[i].index, group->samples[i].power)); |
| 2316 | } |
| 2317 | } |
| 2318 | |
| 2319 | /* |
| 2320 | * Send a command to the firmware. |
| 2321 | */ |
| 2322 | static int |
| 2323 | wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) |
| 2324 | { |
| 2325 | struct wpi_tx_ring *ring = &sc->cmdq; |
| 2326 | struct wpi_tx_desc *desc; |
| 2327 | struct wpi_tx_cmd *cmd; |
| 2328 | struct wpi_dma_info *dma; |
| 2329 | |
| 2330 | KASSERT(size <= sizeof cmd->data); |
| 2331 | |
| 2332 | desc = &ring->desc[ring->cur]; |
| 2333 | cmd = &ring->cmd[ring->cur]; |
| 2334 | |
| 2335 | cmd->code = code; |
| 2336 | cmd->flags = 0; |
| 2337 | cmd->qid = ring->qid; |
| 2338 | cmd->idx = ring->cur; |
| 2339 | memcpy(cmd->data, buf, size); |
| 2340 | |
| 2341 | dma = &ring->cmd_dma; |
| 2342 | bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); |
| 2343 | |
| 2344 | desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); |
| 2345 | desc->segs[0].addr = htole32(ring->cmd_dma.paddr + |
| 2346 | ring->cur * sizeof (struct wpi_tx_cmd)); |
| 2347 | desc->segs[0].len = htole32(4 + size); |
| 2348 | |
| 2349 | dma = &ring->desc_dma; |
| 2350 | bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); |
| 2351 | |
| 2352 | /* kick cmd ring */ |
| 2353 | ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; |
| 2354 | WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); |
| 2355 | |
| 2356 | return async ? 0 : tsleep(cmd, PCATCH, "wpicmd" , hz); |
| 2357 | } |
| 2358 | |
| 2359 | static int |
| 2360 | wpi_wme_update(struct ieee80211com *ic) |
| 2361 | { |
| 2362 | #define WPI_EXP2(v) htole16((1 << (v)) - 1) |
| 2363 | #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) |
| 2364 | struct wpi_softc *sc = ic->ic_ifp->if_softc; |
| 2365 | const struct wmeParams *wmep; |
| 2366 | struct wpi_wme_setup wme; |
| 2367 | int ac; |
| 2368 | |
| 2369 | /* don't override default WME values if WME is not actually enabled */ |
| 2370 | if (!(ic->ic_flags & IEEE80211_F_WME)) |
| 2371 | return 0; |
| 2372 | |
| 2373 | wme.flags = 0; |
| 2374 | for (ac = 0; ac < WME_NUM_AC; ac++) { |
| 2375 | wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; |
| 2376 | wme.ac[ac].aifsn = wmep->wmep_aifsn; |
| 2377 | wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); |
| 2378 | wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); |
| 2379 | wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); |
| 2380 | |
| 2381 | DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " |
| 2382 | "txop=%d\n" , ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, |
| 2383 | wme.ac[ac].cwmax, wme.ac[ac].txop)); |
| 2384 | } |
| 2385 | |
| 2386 | return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); |
| 2387 | #undef WPI_USEC |
| 2388 | #undef WPI_EXP2 |
| 2389 | } |
| 2390 | |
| 2391 | /* |
| 2392 | * Configure h/w multi-rate retries. |
| 2393 | */ |
| 2394 | static int |
| 2395 | wpi_mrr_setup(struct wpi_softc *sc) |
| 2396 | { |
| 2397 | struct ieee80211com *ic = &sc->sc_ic; |
| 2398 | struct wpi_mrr_setup mrr; |
| 2399 | int i, error; |
| 2400 | |
| 2401 | /* CCK rates (not used with 802.11a) */ |
| 2402 | for (i = WPI_CCK1; i <= WPI_CCK11; i++) { |
| 2403 | mrr.rates[i].flags = 0; |
| 2404 | mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; |
| 2405 | /* fallback to the immediate lower CCK rate (if any) */ |
| 2406 | mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; |
| 2407 | /* try one time at this rate before falling back to "next" */ |
| 2408 | mrr.rates[i].ntries = 1; |
| 2409 | } |
| 2410 | |
| 2411 | /* OFDM rates (not used with 802.11b) */ |
| 2412 | for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { |
| 2413 | mrr.rates[i].flags = 0; |
| 2414 | mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; |
| 2415 | /* fallback to the immediate lower rate (if any) */ |
| 2416 | /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ |
| 2417 | mrr.rates[i].next = (i == WPI_OFDM6) ? |
| 2418 | ((ic->ic_curmode == IEEE80211_MODE_11A) ? |
| 2419 | WPI_OFDM6 : WPI_CCK2) : |
| 2420 | i - 1; |
| 2421 | /* try one time at this rate before falling back to "next" */ |
| 2422 | mrr.rates[i].ntries = 1; |
| 2423 | } |
| 2424 | |
| 2425 | /* setup MRR for control frames */ |
| 2426 | mrr.which = htole32(WPI_MRR_CTL); |
| 2427 | error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); |
| 2428 | if (error != 0) { |
| 2429 | aprint_error_dev(sc->sc_dev, |
| 2430 | "could not setup MRR for control frames\n" ); |
| 2431 | return error; |
| 2432 | } |
| 2433 | |
| 2434 | /* setup MRR for data frames */ |
| 2435 | mrr.which = htole32(WPI_MRR_DATA); |
| 2436 | error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); |
| 2437 | if (error != 0) { |
| 2438 | aprint_error_dev(sc->sc_dev, |
| 2439 | "could not setup MRR for data frames\n" ); |
| 2440 | return error; |
| 2441 | } |
| 2442 | |
| 2443 | return 0; |
| 2444 | } |
| 2445 | |
| 2446 | static void |
| 2447 | wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) |
| 2448 | { |
| 2449 | struct wpi_cmd_led led; |
| 2450 | |
| 2451 | led.which = which; |
| 2452 | led.unit = htole32(100000); /* on/off in unit of 100ms */ |
| 2453 | led.off = off; |
| 2454 | led.on = on; |
| 2455 | |
| 2456 | (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); |
| 2457 | } |
| 2458 | |
| 2459 | static void |
| 2460 | wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) |
| 2461 | { |
| 2462 | struct wpi_cmd_tsf tsf; |
| 2463 | uint64_t val, mod; |
| 2464 | |
| 2465 | memset(&tsf, 0, sizeof tsf); |
| 2466 | memcpy(&tsf.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); |
| 2467 | tsf.bintval = htole16(ni->ni_intval); |
| 2468 | tsf.lintval = htole16(10); |
| 2469 | |
| 2470 | /* compute remaining time until next beacon */ |
| 2471 | val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ |
| 2472 | mod = le64toh(tsf.tstamp) % val; |
| 2473 | tsf.binitval = htole32((uint32_t)(val - mod)); |
| 2474 | |
| 2475 | DPRINTF(("TSF bintval=%u tstamp=%" PRIu64 ", init=%u\n" , |
| 2476 | ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); |
| 2477 | |
| 2478 | if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) |
| 2479 | aprint_error_dev(sc->sc_dev, "could not enable TSF\n" ); |
| 2480 | } |
| 2481 | |
| 2482 | /* |
| 2483 | * Update Tx power to match what is defined for channel `c'. |
| 2484 | */ |
| 2485 | static int |
| 2486 | wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) |
| 2487 | { |
| 2488 | struct ieee80211com *ic = &sc->sc_ic; |
| 2489 | struct wpi_power_group *group; |
| 2490 | struct wpi_cmd_txpower txpower; |
| 2491 | u_int chan; |
| 2492 | int i; |
| 2493 | |
| 2494 | /* get channel number */ |
| 2495 | chan = ieee80211_chan2ieee(ic, c); |
| 2496 | |
| 2497 | /* find the power group to which this channel belongs */ |
| 2498 | if (IEEE80211_IS_CHAN_5GHZ(c)) { |
| 2499 | for (group = &sc->groups[1]; group < &sc->groups[4]; group++) |
| 2500 | if (chan <= group->chan) |
| 2501 | break; |
| 2502 | } else |
| 2503 | group = &sc->groups[0]; |
| 2504 | |
| 2505 | memset(&txpower, 0, sizeof txpower); |
| 2506 | txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; |
| 2507 | txpower.chan = htole16(chan); |
| 2508 | |
| 2509 | /* set Tx power for all OFDM and CCK rates */ |
| 2510 | for (i = 0; i <= 11 ; i++) { |
| 2511 | /* retrieve Tx power for this channel/rate combination */ |
| 2512 | int idx = wpi_get_power_index(sc, group, c, |
| 2513 | wpi_ridx_to_rate[i]); |
| 2514 | |
| 2515 | txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; |
| 2516 | |
| 2517 | if (IEEE80211_IS_CHAN_5GHZ(c)) { |
| 2518 | txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; |
| 2519 | txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; |
| 2520 | } else { |
| 2521 | txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; |
| 2522 | txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; |
| 2523 | } |
| 2524 | DPRINTF(("chan %d/rate %d: power index %d\n" , chan, |
| 2525 | wpi_ridx_to_rate[i], idx)); |
| 2526 | } |
| 2527 | |
| 2528 | return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); |
| 2529 | } |
| 2530 | |
| 2531 | /* |
| 2532 | * Determine Tx power index for a given channel/rate combination. |
| 2533 | * This takes into account the regulatory information from EEPROM and the |
| 2534 | * current temperature. |
| 2535 | */ |
| 2536 | static int |
| 2537 | wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, |
| 2538 | struct ieee80211_channel *c, int rate) |
| 2539 | { |
| 2540 | /* fixed-point arithmetic division using a n-bit fractional part */ |
| 2541 | #define fdivround(a, b, n) \ |
| 2542 | ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) |
| 2543 | |
| 2544 | /* linear interpolation */ |
| 2545 | #define interpolate(x, x1, y1, x2, y2, n) \ |
| 2546 | ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) |
| 2547 | |
| 2548 | struct ieee80211com *ic = &sc->sc_ic; |
| 2549 | struct wpi_power_sample *sample; |
| 2550 | int pwr, idx; |
| 2551 | u_int chan; |
| 2552 | |
| 2553 | /* get channel number */ |
| 2554 | chan = ieee80211_chan2ieee(ic, c); |
| 2555 | |
| 2556 | /* default power is group's maximum power - 3dB */ |
| 2557 | pwr = group->maxpwr / 2; |
| 2558 | |
| 2559 | /* decrease power for highest OFDM rates to reduce distortion */ |
| 2560 | switch (rate) { |
| 2561 | case 72: /* 36Mb/s */ |
| 2562 | pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; |
| 2563 | break; |
| 2564 | case 96: /* 48Mb/s */ |
| 2565 | pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; |
| 2566 | break; |
| 2567 | case 108: /* 54Mb/s */ |
| 2568 | pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; |
| 2569 | break; |
| 2570 | } |
| 2571 | |
| 2572 | /* never exceed channel's maximum allowed Tx power */ |
| 2573 | pwr = min(pwr, sc->maxpwr[chan]); |
| 2574 | |
| 2575 | /* retrieve power index into gain tables from samples */ |
| 2576 | for (sample = group->samples; sample < &group->samples[3]; sample++) |
| 2577 | if (pwr > sample[1].power) |
| 2578 | break; |
| 2579 | /* fixed-point linear interpolation using a 19-bit fractional part */ |
| 2580 | idx = interpolate(pwr, sample[0].power, sample[0].index, |
| 2581 | sample[1].power, sample[1].index, 19); |
| 2582 | |
| 2583 | /*- |
| 2584 | * Adjust power index based on current temperature: |
| 2585 | * - if cooler than factory-calibrated: decrease output power |
| 2586 | * - if warmer than factory-calibrated: increase output power |
| 2587 | */ |
| 2588 | idx -= (sc->temp - group->temp) * 11 / 100; |
| 2589 | |
| 2590 | /* decrease power for CCK rates (-5dB) */ |
| 2591 | if (!WPI_RATE_IS_OFDM(rate)) |
| 2592 | idx += 10; |
| 2593 | |
| 2594 | /* keep power index in a valid range */ |
| 2595 | if (idx < 0) |
| 2596 | return 0; |
| 2597 | if (idx > WPI_MAX_PWR_INDEX) |
| 2598 | return WPI_MAX_PWR_INDEX; |
| 2599 | return idx; |
| 2600 | |
| 2601 | #undef interpolate |
| 2602 | #undef fdivround |
| 2603 | } |
| 2604 | |
| 2605 | /* |
| 2606 | * Build a beacon frame that the firmware will broadcast periodically in |
| 2607 | * IBSS or HostAP modes. |
| 2608 | */ |
| 2609 | static int |
| 2610 | wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) |
| 2611 | { |
| 2612 | struct ieee80211com *ic = &sc->sc_ic; |
| 2613 | struct wpi_tx_ring *ring = &sc->cmdq; |
| 2614 | struct wpi_tx_desc *desc; |
| 2615 | struct wpi_tx_data *data; |
| 2616 | struct wpi_tx_cmd *cmd; |
| 2617 | struct wpi_cmd_beacon *bcn; |
| 2618 | struct ieee80211_beacon_offsets bo; |
| 2619 | struct mbuf *m0; |
| 2620 | int error; |
| 2621 | |
| 2622 | desc = &ring->desc[ring->cur]; |
| 2623 | data = &ring->data[ring->cur]; |
| 2624 | |
| 2625 | m0 = ieee80211_beacon_alloc(ic, ni, &bo); |
| 2626 | if (m0 == NULL) { |
| 2627 | aprint_error_dev(sc->sc_dev, |
| 2628 | "could not allocate beacon frame\n" ); |
| 2629 | return ENOMEM; |
| 2630 | } |
| 2631 | |
| 2632 | cmd = &ring->cmd[ring->cur]; |
| 2633 | cmd->code = WPI_CMD_SET_BEACON; |
| 2634 | cmd->flags = 0; |
| 2635 | cmd->qid = ring->qid; |
| 2636 | cmd->idx = ring->cur; |
| 2637 | |
| 2638 | bcn = (struct wpi_cmd_beacon *)cmd->data; |
| 2639 | memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); |
| 2640 | bcn->id = WPI_ID_BROADCAST; |
| 2641 | bcn->ofdm_mask = 0xff; |
| 2642 | bcn->cck_mask = 0x0f; |
| 2643 | bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); |
| 2644 | bcn->len = htole16(m0->m_pkthdr.len); |
| 2645 | bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? |
| 2646 | wpi_plcp_signal(12) : wpi_plcp_signal(2); |
| 2647 | bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); |
| 2648 | |
| 2649 | /* save and trim IEEE802.11 header */ |
| 2650 | m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); |
| 2651 | m_adj(m0, sizeof (struct ieee80211_frame)); |
| 2652 | |
| 2653 | /* assume beacon frame is contiguous */ |
| 2654 | error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, |
| 2655 | BUS_DMA_READ | BUS_DMA_NOWAIT); |
| 2656 | if (error != 0) { |
| 2657 | aprint_error_dev(sc->sc_dev, "could not map beacon\n" ); |
| 2658 | m_freem(m0); |
| 2659 | return error; |
| 2660 | } |
| 2661 | |
| 2662 | data->m = m0; |
| 2663 | |
| 2664 | /* first scatter/gather segment is used by the beacon command */ |
| 2665 | desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); |
| 2666 | desc->segs[0].addr = htole32(ring->cmd_dma.paddr + |
| 2667 | ring->cur * sizeof (struct wpi_tx_cmd)); |
| 2668 | desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); |
| 2669 | desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); |
| 2670 | desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); |
| 2671 | |
| 2672 | bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, |
| 2673 | ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); |
| 2674 | bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, |
| 2675 | BUS_DMASYNC_PREWRITE); |
| 2676 | |
| 2677 | /* kick cmd ring */ |
| 2678 | ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; |
| 2679 | WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); |
| 2680 | |
| 2681 | return 0; |
| 2682 | } |
| 2683 | |
| 2684 | static int |
| 2685 | wpi_auth(struct wpi_softc *sc) |
| 2686 | { |
| 2687 | struct ieee80211com *ic = &sc->sc_ic; |
| 2688 | struct ieee80211_node *ni = ic->ic_bss; |
| 2689 | struct wpi_node_info node; |
| 2690 | int error; |
| 2691 | |
| 2692 | /* update adapter's configuration */ |
| 2693 | IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); |
| 2694 | sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); |
| 2695 | sc->config.flags = htole32(WPI_CONFIG_TSF); |
| 2696 | if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { |
| 2697 | sc->config.flags |= htole32(WPI_CONFIG_AUTO | |
| 2698 | WPI_CONFIG_24GHZ); |
| 2699 | } |
| 2700 | switch (ic->ic_curmode) { |
| 2701 | case IEEE80211_MODE_11A: |
| 2702 | sc->config.cck_mask = 0; |
| 2703 | sc->config.ofdm_mask = 0x15; |
| 2704 | break; |
| 2705 | case IEEE80211_MODE_11B: |
| 2706 | sc->config.cck_mask = 0x03; |
| 2707 | sc->config.ofdm_mask = 0; |
| 2708 | break; |
| 2709 | default: /* assume 802.11b/g */ |
| 2710 | sc->config.cck_mask = 0x0f; |
| 2711 | sc->config.ofdm_mask = 0x15; |
| 2712 | } |
| 2713 | DPRINTF(("config chan %d flags %x cck %x ofdm %x\n" , sc->config.chan, |
| 2714 | sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); |
| 2715 | error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, |
| 2716 | sizeof (struct wpi_config), 1); |
| 2717 | if (error != 0) { |
| 2718 | aprint_error_dev(sc->sc_dev, "could not configure\n" ); |
| 2719 | return error; |
| 2720 | } |
| 2721 | |
| 2722 | /* configuration has changed, set Tx power accordingly */ |
| 2723 | if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { |
| 2724 | aprint_error_dev(sc->sc_dev, "could not set Tx power\n" ); |
| 2725 | return error; |
| 2726 | } |
| 2727 | |
| 2728 | /* add default node */ |
| 2729 | memset(&node, 0, sizeof node); |
| 2730 | IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); |
| 2731 | node.id = WPI_ID_BSS; |
| 2732 | node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? |
| 2733 | wpi_plcp_signal(12) : wpi_plcp_signal(2); |
| 2734 | node.action = htole32(WPI_ACTION_SET_RATE); |
| 2735 | node.antenna = WPI_ANTENNA_BOTH; |
| 2736 | error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); |
| 2737 | if (error != 0) { |
| 2738 | aprint_error_dev(sc->sc_dev, "could not add BSS node\n" ); |
| 2739 | return error; |
| 2740 | } |
| 2741 | |
| 2742 | return 0; |
| 2743 | } |
| 2744 | |
| 2745 | /* |
| 2746 | * Send a scan request to the firmware. Since this command is huge, we map it |
| 2747 | * into a mbuf instead of using the pre-allocated set of commands. |
| 2748 | */ |
| 2749 | static int |
| 2750 | wpi_scan(struct wpi_softc *sc) |
| 2751 | { |
| 2752 | struct ieee80211com *ic = &sc->sc_ic; |
| 2753 | struct wpi_tx_ring *ring = &sc->cmdq; |
| 2754 | struct wpi_tx_desc *desc; |
| 2755 | struct wpi_tx_data *data; |
| 2756 | struct wpi_tx_cmd *cmd; |
| 2757 | struct wpi_scan_hdr *hdr; |
| 2758 | struct wpi_scan_chan *chan; |
| 2759 | struct ieee80211_frame *wh; |
| 2760 | struct ieee80211_rateset *rs; |
| 2761 | struct ieee80211_channel *c; |
| 2762 | uint8_t *frm; |
| 2763 | int pktlen, error, nrates; |
| 2764 | |
| 2765 | if (ic->ic_curchan == NULL) |
| 2766 | return EIO; |
| 2767 | |
| 2768 | desc = &ring->desc[ring->cur]; |
| 2769 | data = &ring->data[ring->cur]; |
| 2770 | |
| 2771 | MGETHDR(data->m, M_DONTWAIT, MT_DATA); |
| 2772 | if (data->m == NULL) { |
| 2773 | aprint_error_dev(sc->sc_dev, |
| 2774 | "could not allocate mbuf for scan command\n" ); |
| 2775 | return ENOMEM; |
| 2776 | } |
| 2777 | MCLGET(data->m, M_DONTWAIT); |
| 2778 | if (!(data->m->m_flags & M_EXT)) { |
| 2779 | m_freem(data->m); |
| 2780 | data->m = NULL; |
| 2781 | aprint_error_dev(sc->sc_dev, |
| 2782 | "could not allocate mbuf for scan command\n" ); |
| 2783 | return ENOMEM; |
| 2784 | } |
| 2785 | |
| 2786 | cmd = mtod(data->m, struct wpi_tx_cmd *); |
| 2787 | cmd->code = WPI_CMD_SCAN; |
| 2788 | cmd->flags = 0; |
| 2789 | cmd->qid = ring->qid; |
| 2790 | cmd->idx = ring->cur; |
| 2791 | |
| 2792 | hdr = (struct wpi_scan_hdr *)cmd->data; |
| 2793 | memset(hdr, 0, sizeof (struct wpi_scan_hdr)); |
| 2794 | hdr->cmd.flags = htole32(WPI_TX_AUTO_SEQ); |
| 2795 | hdr->cmd.id = WPI_ID_BROADCAST; |
| 2796 | hdr->cmd.lifetime = htole32(WPI_LIFETIME_INFINITE); |
| 2797 | /* |
| 2798 | * Move to the next channel if no packets are received within 5 msecs |
| 2799 | * after sending the probe request (this helps to reduce the duration |
| 2800 | * of active scans). |
| 2801 | */ |
| 2802 | hdr->quiet = htole16(5); /* timeout in milliseconds */ |
| 2803 | hdr->plcp_threshold = htole16(1); /* min # of packets */ |
| 2804 | |
| 2805 | if (ic->ic_curchan->ic_flags & IEEE80211_CHAN_5GHZ) { |
| 2806 | hdr->crc_threshold = htole16(1); |
| 2807 | /* send probe requests at 6Mbps */ |
| 2808 | hdr->cmd.rate = wpi_plcp_signal(12); |
| 2809 | rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; |
| 2810 | } else { |
| 2811 | hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); |
| 2812 | /* send probe requests at 1Mbps */ |
| 2813 | hdr->cmd.rate = wpi_plcp_signal(2); |
| 2814 | rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; |
| 2815 | } |
| 2816 | |
| 2817 | /* for directed scans, firmware inserts the essid IE itself */ |
| 2818 | if (ic->ic_des_esslen != 0) { |
| 2819 | hdr->essid[0].id = IEEE80211_ELEMID_SSID; |
| 2820 | hdr->essid[0].len = ic->ic_des_esslen; |
| 2821 | memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); |
| 2822 | } |
| 2823 | |
| 2824 | /* |
| 2825 | * Build a probe request frame. Most of the following code is a |
| 2826 | * copy & paste of what is done in net80211. |
| 2827 | */ |
| 2828 | wh = (struct ieee80211_frame *)(hdr + 1); |
| 2829 | wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | |
| 2830 | IEEE80211_FC0_SUBTYPE_PROBE_REQ; |
| 2831 | wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; |
| 2832 | IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); |
| 2833 | IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); |
| 2834 | IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); |
| 2835 | *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ |
| 2836 | *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ |
| 2837 | |
| 2838 | frm = (uint8_t *)(wh + 1); |
| 2839 | |
| 2840 | /* add empty essid IE (firmware generates it for directed scans) */ |
| 2841 | *frm++ = IEEE80211_ELEMID_SSID; |
| 2842 | *frm++ = 0; |
| 2843 | |
| 2844 | /* add supported rates IE */ |
| 2845 | *frm++ = IEEE80211_ELEMID_RATES; |
| 2846 | nrates = rs->rs_nrates; |
| 2847 | if (nrates > IEEE80211_RATE_SIZE) |
| 2848 | nrates = IEEE80211_RATE_SIZE; |
| 2849 | *frm++ = nrates; |
| 2850 | memcpy(frm, rs->rs_rates, nrates); |
| 2851 | frm += nrates; |
| 2852 | |
| 2853 | /* add supported xrates IE */ |
| 2854 | if (rs->rs_nrates > IEEE80211_RATE_SIZE) { |
| 2855 | nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; |
| 2856 | *frm++ = IEEE80211_ELEMID_XRATES; |
| 2857 | *frm++ = nrates; |
| 2858 | memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); |
| 2859 | frm += nrates; |
| 2860 | } |
| 2861 | |
| 2862 | /* setup length of probe request */ |
| 2863 | hdr->cmd.len = htole16(frm - (uint8_t *)wh); |
| 2864 | |
| 2865 | chan = (struct wpi_scan_chan *)frm; |
| 2866 | c = ic->ic_curchan; |
| 2867 | |
| 2868 | chan->chan = ieee80211_chan2ieee(ic, c); |
| 2869 | chan->flags = 0; |
| 2870 | if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { |
| 2871 | chan->flags |= WPI_CHAN_ACTIVE; |
| 2872 | if (ic->ic_des_esslen != 0) |
| 2873 | chan->flags |= WPI_CHAN_DIRECT; |
| 2874 | } |
| 2875 | chan->dsp_gain = 0x6e; |
| 2876 | if (IEEE80211_IS_CHAN_5GHZ(c)) { |
| 2877 | chan->rf_gain = 0x3b; |
| 2878 | chan->active = htole16(10); |
| 2879 | chan->passive = htole16(110); |
| 2880 | } else { |
| 2881 | chan->rf_gain = 0x28; |
| 2882 | chan->active = htole16(20); |
| 2883 | chan->passive = htole16(120); |
| 2884 | } |
| 2885 | hdr->nchan++; |
| 2886 | chan++; |
| 2887 | |
| 2888 | frm += sizeof (struct wpi_scan_chan); |
| 2889 | |
| 2890 | hdr->len = htole16(frm - (uint8_t *)hdr); |
| 2891 | pktlen = frm - (uint8_t *)cmd; |
| 2892 | |
| 2893 | error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, NULL, |
| 2894 | BUS_DMA_NOWAIT); |
| 2895 | if (error != 0) { |
| 2896 | aprint_error_dev(sc->sc_dev, "could not map scan command\n" ); |
| 2897 | m_freem(data->m); |
| 2898 | data->m = NULL; |
| 2899 | return error; |
| 2900 | } |
| 2901 | |
| 2902 | desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); |
| 2903 | desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); |
| 2904 | desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); |
| 2905 | |
| 2906 | bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, |
| 2907 | ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); |
| 2908 | bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, |
| 2909 | BUS_DMASYNC_PREWRITE); |
| 2910 | |
| 2911 | /* kick cmd ring */ |
| 2912 | ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; |
| 2913 | WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); |
| 2914 | |
| 2915 | return 0; /* will be notified async. of failure/success */ |
| 2916 | } |
| 2917 | |
| 2918 | static int |
| 2919 | wpi_config(struct wpi_softc *sc) |
| 2920 | { |
| 2921 | struct ieee80211com *ic = &sc->sc_ic; |
| 2922 | struct ifnet *ifp = ic->ic_ifp; |
| 2923 | struct wpi_power power; |
| 2924 | struct wpi_bluetooth bluetooth; |
| 2925 | struct wpi_node_info node; |
| 2926 | int error; |
| 2927 | |
| 2928 | memset(&power, 0, sizeof power); |
| 2929 | power.flags = htole32(WPI_POWER_CAM | 0x8); |
| 2930 | error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); |
| 2931 | if (error != 0) { |
| 2932 | aprint_error_dev(sc->sc_dev, "could not set power mode\n" ); |
| 2933 | return error; |
| 2934 | } |
| 2935 | |
| 2936 | /* configure bluetooth coexistence */ |
| 2937 | memset(&bluetooth, 0, sizeof bluetooth); |
| 2938 | bluetooth.flags = 3; |
| 2939 | bluetooth.lead = 0xaa; |
| 2940 | bluetooth.kill = 1; |
| 2941 | error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, |
| 2942 | 0); |
| 2943 | if (error != 0) { |
| 2944 | aprint_error_dev(sc->sc_dev, |
| 2945 | "could not configure bluetooth coexistence\n" ); |
| 2946 | return error; |
| 2947 | } |
| 2948 | |
| 2949 | /* configure adapter */ |
| 2950 | memset(&sc->config, 0, sizeof (struct wpi_config)); |
| 2951 | IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); |
| 2952 | IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); |
| 2953 | /* set default channel */ |
| 2954 | sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); |
| 2955 | sc->config.flags = htole32(WPI_CONFIG_TSF); |
| 2956 | if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { |
| 2957 | sc->config.flags |= htole32(WPI_CONFIG_AUTO | |
| 2958 | WPI_CONFIG_24GHZ); |
| 2959 | } |
| 2960 | sc->config.filter = 0; |
| 2961 | switch (ic->ic_opmode) { |
| 2962 | case IEEE80211_M_STA: |
| 2963 | sc->config.mode = WPI_MODE_STA; |
| 2964 | sc->config.filter |= htole32(WPI_FILTER_MULTICAST); |
| 2965 | break; |
| 2966 | case IEEE80211_M_IBSS: |
| 2967 | case IEEE80211_M_AHDEMO: |
| 2968 | sc->config.mode = WPI_MODE_IBSS; |
| 2969 | break; |
| 2970 | case IEEE80211_M_HOSTAP: |
| 2971 | sc->config.mode = WPI_MODE_HOSTAP; |
| 2972 | break; |
| 2973 | case IEEE80211_M_MONITOR: |
| 2974 | sc->config.mode = WPI_MODE_MONITOR; |
| 2975 | sc->config.filter |= htole32(WPI_FILTER_MULTICAST | |
| 2976 | WPI_FILTER_CTL | WPI_FILTER_PROMISC); |
| 2977 | break; |
| 2978 | } |
| 2979 | sc->config.cck_mask = 0x0f; /* not yet negotiated */ |
| 2980 | sc->config.ofdm_mask = 0xff; /* not yet negotiated */ |
| 2981 | error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, |
| 2982 | sizeof (struct wpi_config), 0); |
| 2983 | if (error != 0) { |
| 2984 | aprint_error_dev(sc->sc_dev, "configure command failed\n" ); |
| 2985 | return error; |
| 2986 | } |
| 2987 | |
| 2988 | /* configuration has changed, set Tx power accordingly */ |
| 2989 | if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { |
| 2990 | aprint_error_dev(sc->sc_dev, "could not set Tx power\n" ); |
| 2991 | return error; |
| 2992 | } |
| 2993 | |
| 2994 | /* add broadcast node */ |
| 2995 | memset(&node, 0, sizeof node); |
| 2996 | IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); |
| 2997 | node.id = WPI_ID_BROADCAST; |
| 2998 | node.rate = wpi_plcp_signal(2); |
| 2999 | node.action = htole32(WPI_ACTION_SET_RATE); |
| 3000 | node.antenna = WPI_ANTENNA_BOTH; |
| 3001 | error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); |
| 3002 | if (error != 0) { |
| 3003 | aprint_error_dev(sc->sc_dev, "could not add broadcast node\n" ); |
| 3004 | return error; |
| 3005 | } |
| 3006 | |
| 3007 | if ((error = wpi_mrr_setup(sc)) != 0) { |
| 3008 | aprint_error_dev(sc->sc_dev, "could not setup MRR\n" ); |
| 3009 | return error; |
| 3010 | } |
| 3011 | |
| 3012 | return 0; |
| 3013 | } |
| 3014 | |
| 3015 | static void |
| 3016 | wpi_stop_master(struct wpi_softc *sc) |
| 3017 | { |
| 3018 | uint32_t tmp; |
| 3019 | int ntries; |
| 3020 | |
| 3021 | tmp = WPI_READ(sc, WPI_RESET); |
| 3022 | WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); |
| 3023 | |
| 3024 | tmp = WPI_READ(sc, WPI_GPIO_CTL); |
| 3025 | if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) |
| 3026 | return; /* already asleep */ |
| 3027 | |
| 3028 | for (ntries = 0; ntries < 100; ntries++) { |
| 3029 | if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) |
| 3030 | break; |
| 3031 | DELAY(10); |
| 3032 | } |
| 3033 | if (ntries == 100) { |
| 3034 | aprint_error_dev(sc->sc_dev, "timeout waiting for master\n" ); |
| 3035 | } |
| 3036 | } |
| 3037 | |
| 3038 | static int |
| 3039 | wpi_power_up(struct wpi_softc *sc) |
| 3040 | { |
| 3041 | uint32_t tmp; |
| 3042 | int ntries; |
| 3043 | |
| 3044 | wpi_mem_lock(sc); |
| 3045 | tmp = wpi_mem_read(sc, WPI_MEM_POWER); |
| 3046 | wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); |
| 3047 | wpi_mem_unlock(sc); |
| 3048 | |
| 3049 | for (ntries = 0; ntries < 5000; ntries++) { |
| 3050 | if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) |
| 3051 | break; |
| 3052 | DELAY(10); |
| 3053 | } |
| 3054 | if (ntries == 5000) { |
| 3055 | aprint_error_dev(sc->sc_dev, |
| 3056 | "timeout waiting for NIC to power up\n" ); |
| 3057 | return ETIMEDOUT; |
| 3058 | } |
| 3059 | return 0; |
| 3060 | } |
| 3061 | |
| 3062 | static int |
| 3063 | wpi_reset(struct wpi_softc *sc) |
| 3064 | { |
| 3065 | uint32_t tmp; |
| 3066 | int ntries; |
| 3067 | |
| 3068 | /* clear any pending interrupts */ |
| 3069 | WPI_WRITE(sc, WPI_INTR, 0xffffffff); |
| 3070 | |
| 3071 | tmp = WPI_READ(sc, WPI_PLL_CTL); |
| 3072 | WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); |
| 3073 | |
| 3074 | tmp = WPI_READ(sc, WPI_CHICKEN); |
| 3075 | WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); |
| 3076 | |
| 3077 | tmp = WPI_READ(sc, WPI_GPIO_CTL); |
| 3078 | WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); |
| 3079 | |
| 3080 | /* wait for clock stabilization */ |
| 3081 | for (ntries = 0; ntries < 1000; ntries++) { |
| 3082 | if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) |
| 3083 | break; |
| 3084 | DELAY(10); |
| 3085 | } |
| 3086 | if (ntries == 1000) { |
| 3087 | aprint_error_dev(sc->sc_dev, |
| 3088 | "timeout waiting for clock stabilization\n" ); |
| 3089 | return ETIMEDOUT; |
| 3090 | } |
| 3091 | |
| 3092 | /* initialize EEPROM */ |
| 3093 | tmp = WPI_READ(sc, WPI_EEPROM_STATUS); |
| 3094 | if ((tmp & WPI_EEPROM_VERSION) == 0) { |
| 3095 | aprint_error_dev(sc->sc_dev, "EEPROM not found\n" ); |
| 3096 | return EIO; |
| 3097 | } |
| 3098 | WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); |
| 3099 | |
| 3100 | return 0; |
| 3101 | } |
| 3102 | |
| 3103 | static void |
| 3104 | wpi_hw_config(struct wpi_softc *sc) |
| 3105 | { |
| 3106 | uint32_t rev, hw; |
| 3107 | |
| 3108 | /* voodoo from the reference driver */ |
| 3109 | hw = WPI_READ(sc, WPI_HWCONFIG); |
| 3110 | |
| 3111 | rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); |
| 3112 | rev = PCI_REVISION(rev); |
| 3113 | if ((rev & 0xc0) == 0x40) |
| 3114 | hw |= WPI_HW_ALM_MB; |
| 3115 | else if (!(rev & 0x80)) |
| 3116 | hw |= WPI_HW_ALM_MM; |
| 3117 | |
| 3118 | if (sc->cap == 0x80) |
| 3119 | hw |= WPI_HW_SKU_MRC; |
| 3120 | |
| 3121 | hw &= ~WPI_HW_REV_D; |
| 3122 | if ((le16toh(sc->rev) & 0xf0) == 0xd0) |
| 3123 | hw |= WPI_HW_REV_D; |
| 3124 | |
| 3125 | if (sc->type > 1) |
| 3126 | hw |= WPI_HW_TYPE_B; |
| 3127 | |
| 3128 | DPRINTF(("setting h/w config %x\n" , hw)); |
| 3129 | WPI_WRITE(sc, WPI_HWCONFIG, hw); |
| 3130 | } |
| 3131 | |
| 3132 | static int |
| 3133 | wpi_init(struct ifnet *ifp) |
| 3134 | { |
| 3135 | struct wpi_softc *sc = ifp->if_softc; |
| 3136 | struct ieee80211com *ic = &sc->sc_ic; |
| 3137 | uint32_t tmp; |
| 3138 | int qid, ntries, error; |
| 3139 | |
| 3140 | wpi_stop(ifp,1); |
| 3141 | (void)wpi_reset(sc); |
| 3142 | |
| 3143 | wpi_mem_lock(sc); |
| 3144 | wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); |
| 3145 | DELAY(20); |
| 3146 | tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); |
| 3147 | wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); |
| 3148 | wpi_mem_unlock(sc); |
| 3149 | |
| 3150 | (void)wpi_power_up(sc); |
| 3151 | wpi_hw_config(sc); |
| 3152 | |
| 3153 | /* init Rx ring */ |
| 3154 | wpi_mem_lock(sc); |
| 3155 | WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); |
| 3156 | WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + |
| 3157 | offsetof(struct wpi_shared, next)); |
| 3158 | WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); |
| 3159 | WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); |
| 3160 | wpi_mem_unlock(sc); |
| 3161 | |
| 3162 | /* init Tx rings */ |
| 3163 | wpi_mem_lock(sc); |
| 3164 | wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ |
| 3165 | wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ |
| 3166 | wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ |
| 3167 | wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); |
| 3168 | wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); |
| 3169 | wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); |
| 3170 | wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); |
| 3171 | |
| 3172 | WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); |
| 3173 | WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); |
| 3174 | |
| 3175 | for (qid = 0; qid < 6; qid++) { |
| 3176 | WPI_WRITE(sc, WPI_TX_CTL(qid), 0); |
| 3177 | WPI_WRITE(sc, WPI_TX_BASE(qid), 0); |
| 3178 | WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); |
| 3179 | } |
| 3180 | wpi_mem_unlock(sc); |
| 3181 | |
| 3182 | /* clear "radio off" and "disable command" bits (reversed logic) */ |
| 3183 | WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); |
| 3184 | WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); |
| 3185 | |
| 3186 | /* clear any pending interrupts */ |
| 3187 | WPI_WRITE(sc, WPI_INTR, 0xffffffff); |
| 3188 | /* enable interrupts */ |
| 3189 | WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); |
| 3190 | |
| 3191 | /* not sure why/if this is necessary... */ |
| 3192 | WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); |
| 3193 | WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); |
| 3194 | |
| 3195 | if ((error = wpi_load_firmware(sc)) != 0) |
| 3196 | /* wpi_load_firmware prints error messages for us. */ |
| 3197 | goto fail1; |
| 3198 | |
| 3199 | /* Check the status of the radio switch */ |
| 3200 | mutex_enter(&sc->sc_rsw_mtx); |
| 3201 | if (wpi_getrfkill(sc)) { |
| 3202 | mutex_exit(&sc->sc_rsw_mtx); |
| 3203 | aprint_error_dev(sc->sc_dev, |
| 3204 | "radio is disabled by hardware switch\n" ); |
| 3205 | ifp->if_flags &= ~IFF_UP; |
| 3206 | error = EBUSY; |
| 3207 | goto fail1; |
| 3208 | } |
| 3209 | mutex_exit(&sc->sc_rsw_mtx); |
| 3210 | |
| 3211 | /* wait for thermal sensors to calibrate */ |
| 3212 | for (ntries = 0; ntries < 1000; ntries++) { |
| 3213 | if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) |
| 3214 | break; |
| 3215 | DELAY(10); |
| 3216 | } |
| 3217 | if (ntries == 1000) { |
| 3218 | aprint_error_dev(sc->sc_dev, |
| 3219 | "timeout waiting for thermal sensors calibration\n" ); |
| 3220 | error = ETIMEDOUT; |
| 3221 | goto fail1; |
| 3222 | } |
| 3223 | DPRINTF(("temperature %d\n" , sc->temp)); |
| 3224 | |
| 3225 | if ((error = wpi_config(sc)) != 0) { |
| 3226 | aprint_error_dev(sc->sc_dev, "could not configure device\n" ); |
| 3227 | goto fail1; |
| 3228 | } |
| 3229 | |
| 3230 | ifp->if_flags &= ~IFF_OACTIVE; |
| 3231 | ifp->if_flags |= IFF_RUNNING; |
| 3232 | |
| 3233 | if (ic->ic_opmode != IEEE80211_M_MONITOR) { |
| 3234 | if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) |
| 3235 | ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); |
| 3236 | } |
| 3237 | else |
| 3238 | ieee80211_new_state(ic, IEEE80211_S_RUN, -1); |
| 3239 | |
| 3240 | return 0; |
| 3241 | |
| 3242 | fail1: wpi_stop(ifp, 1); |
| 3243 | return error; |
| 3244 | } |
| 3245 | |
| 3246 | static void |
| 3247 | wpi_stop(struct ifnet *ifp, int disable) |
| 3248 | { |
| 3249 | struct wpi_softc *sc = ifp->if_softc; |
| 3250 | struct ieee80211com *ic = &sc->sc_ic; |
| 3251 | uint32_t tmp; |
| 3252 | int ac; |
| 3253 | |
| 3254 | ifp->if_timer = sc->sc_tx_timer = 0; |
| 3255 | ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); |
| 3256 | |
| 3257 | ieee80211_new_state(ic, IEEE80211_S_INIT, -1); |
| 3258 | |
| 3259 | /* disable interrupts */ |
| 3260 | WPI_WRITE(sc, WPI_MASK, 0); |
| 3261 | WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); |
| 3262 | WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); |
| 3263 | WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); |
| 3264 | |
| 3265 | wpi_mem_lock(sc); |
| 3266 | wpi_mem_write(sc, WPI_MEM_MODE, 0); |
| 3267 | wpi_mem_unlock(sc); |
| 3268 | |
| 3269 | /* reset all Tx rings */ |
| 3270 | for (ac = 0; ac < 4; ac++) |
| 3271 | wpi_reset_tx_ring(sc, &sc->txq[ac]); |
| 3272 | wpi_reset_tx_ring(sc, &sc->cmdq); |
| 3273 | |
| 3274 | /* reset Rx ring */ |
| 3275 | wpi_reset_rx_ring(sc, &sc->rxq); |
| 3276 | |
| 3277 | wpi_mem_lock(sc); |
| 3278 | wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); |
| 3279 | wpi_mem_unlock(sc); |
| 3280 | |
| 3281 | DELAY(5); |
| 3282 | |
| 3283 | wpi_stop_master(sc); |
| 3284 | |
| 3285 | tmp = WPI_READ(sc, WPI_RESET); |
| 3286 | WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); |
| 3287 | } |
| 3288 | |
| 3289 | static bool |
| 3290 | wpi_resume(device_t dv, const pmf_qual_t *qual) |
| 3291 | { |
| 3292 | struct wpi_softc *sc = device_private(dv); |
| 3293 | |
| 3294 | (void)wpi_reset(sc); |
| 3295 | |
| 3296 | return true; |
| 3297 | } |
| 3298 | |
| 3299 | /* |
| 3300 | * Return whether or not the radio is enabled in hardware |
| 3301 | * (i.e. the rfkill switch is "off"). |
| 3302 | */ |
| 3303 | static int |
| 3304 | wpi_getrfkill(struct wpi_softc *sc) |
| 3305 | { |
| 3306 | uint32_t tmp; |
| 3307 | |
| 3308 | wpi_mem_lock(sc); |
| 3309 | tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); |
| 3310 | wpi_mem_unlock(sc); |
| 3311 | |
| 3312 | KASSERT(mutex_owned(&sc->sc_rsw_mtx)); |
| 3313 | if (tmp & 0x01) { |
| 3314 | /* switch is on */ |
| 3315 | if (sc->sc_rsw_status != WPI_RSW_ON) { |
| 3316 | sc->sc_rsw_status = WPI_RSW_ON; |
| 3317 | sysmon_pswitch_event(&sc->sc_rsw, |
| 3318 | PSWITCH_EVENT_PRESSED); |
| 3319 | } |
| 3320 | } else { |
| 3321 | /* switch is off */ |
| 3322 | if (sc->sc_rsw_status != WPI_RSW_OFF) { |
| 3323 | sc->sc_rsw_status = WPI_RSW_OFF; |
| 3324 | sysmon_pswitch_event(&sc->sc_rsw, |
| 3325 | PSWITCH_EVENT_RELEASED); |
| 3326 | } |
| 3327 | } |
| 3328 | |
| 3329 | return !(tmp & 0x01); |
| 3330 | } |
| 3331 | |
| 3332 | static int |
| 3333 | wpi_sysctl_radio(SYSCTLFN_ARGS) |
| 3334 | { |
| 3335 | struct sysctlnode node; |
| 3336 | struct wpi_softc *sc; |
| 3337 | int val, error; |
| 3338 | |
| 3339 | node = *rnode; |
| 3340 | sc = (struct wpi_softc *)node.sysctl_data; |
| 3341 | |
| 3342 | mutex_enter(&sc->sc_rsw_mtx); |
| 3343 | val = !wpi_getrfkill(sc); |
| 3344 | mutex_exit(&sc->sc_rsw_mtx); |
| 3345 | |
| 3346 | node.sysctl_data = &val; |
| 3347 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 3348 | |
| 3349 | if (error || newp == NULL) |
| 3350 | return error; |
| 3351 | |
| 3352 | return 0; |
| 3353 | } |
| 3354 | |
| 3355 | static void |
| 3356 | wpi_sysctlattach(struct wpi_softc *sc) |
| 3357 | { |
| 3358 | int rc; |
| 3359 | const struct sysctlnode *rnode; |
| 3360 | const struct sysctlnode *cnode; |
| 3361 | |
| 3362 | struct sysctllog **clog = &sc->sc_sysctllog; |
| 3363 | |
| 3364 | if ((rc = sysctl_createv(clog, 0, NULL, &rnode, |
| 3365 | CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), |
| 3366 | SYSCTL_DESCR("wpi controls and statistics" ), |
| 3367 | NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) |
| 3368 | goto err; |
| 3369 | |
| 3370 | if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, |
| 3371 | CTLFLAG_PERMANENT, CTLTYPE_INT, "radio" , |
| 3372 | SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)" ), |
| 3373 | wpi_sysctl_radio, 0, (void *)sc, 0, CTL_CREATE, CTL_EOL)) != 0) |
| 3374 | goto err; |
| 3375 | |
| 3376 | #ifdef WPI_DEBUG |
| 3377 | /* control debugging printfs */ |
| 3378 | if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, |
| 3379 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, |
| 3380 | "debug" , SYSCTL_DESCR("Enable debugging output" ), |
| 3381 | NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) |
| 3382 | goto err; |
| 3383 | #endif |
| 3384 | |
| 3385 | return; |
| 3386 | err: |
| 3387 | aprint_error("%s: sysctl_createv failed (rc = %d)\n" , __func__, rc); |
| 3388 | } |
| 3389 | |
| 3390 | static void |
| 3391 | wpi_rsw_thread(void *arg) |
| 3392 | { |
| 3393 | struct wpi_softc *sc = (struct wpi_softc *)arg; |
| 3394 | |
| 3395 | mutex_enter(&sc->sc_rsw_mtx); |
| 3396 | for (;;) { |
| 3397 | cv_timedwait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx, hz); |
| 3398 | if (sc->sc_dying) { |
| 3399 | sc->sc_rsw_lwp = NULL; |
| 3400 | cv_broadcast(&sc->sc_rsw_cv); |
| 3401 | mutex_exit(&sc->sc_rsw_mtx); |
| 3402 | kthread_exit(0); |
| 3403 | } |
| 3404 | wpi_getrfkill(sc); |
| 3405 | } |
| 3406 | } |
| 3407 | |
| 3408 | |