| 1 | /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ |
| 2 | /* $NetBSD: if_rum.c,v 1.56 2016/07/07 06:55:42 msaitoh Exp $ */ |
| 3 | |
| 4 | /*- |
| 5 | * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr> |
| 6 | * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org> |
| 7 | * |
| 8 | * Permission to use, copy, modify, and distribute this software for any |
| 9 | * purpose with or without fee is hereby granted, provided that the above |
| 10 | * copyright notice and this permission notice appear in all copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | */ |
| 20 | |
| 21 | /*- |
| 22 | * Ralink Technology RT2501USB/RT2601USB chipset driver |
| 23 | * http://www.ralinktech.com.tw/ |
| 24 | */ |
| 25 | |
| 26 | #include <sys/cdefs.h> |
| 27 | __KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.56 2016/07/07 06:55:42 msaitoh Exp $" ); |
| 28 | |
| 29 | #include <sys/param.h> |
| 30 | #include <sys/sockio.h> |
| 31 | #include <sys/sysctl.h> |
| 32 | #include <sys/mbuf.h> |
| 33 | #include <sys/kernel.h> |
| 34 | #include <sys/socket.h> |
| 35 | #include <sys/systm.h> |
| 36 | #include <sys/module.h> |
| 37 | #include <sys/conf.h> |
| 38 | #include <sys/device.h> |
| 39 | |
| 40 | #include <sys/bus.h> |
| 41 | #include <machine/endian.h> |
| 42 | #include <sys/intr.h> |
| 43 | |
| 44 | #include <net/bpf.h> |
| 45 | #include <net/if.h> |
| 46 | #include <net/if_arp.h> |
| 47 | #include <net/if_dl.h> |
| 48 | #include <net/if_ether.h> |
| 49 | #include <net/if_media.h> |
| 50 | #include <net/if_types.h> |
| 51 | |
| 52 | #include <netinet/in.h> |
| 53 | #include <netinet/in_systm.h> |
| 54 | #include <netinet/in_var.h> |
| 55 | #include <netinet/ip.h> |
| 56 | |
| 57 | #include <net80211/ieee80211_netbsd.h> |
| 58 | #include <net80211/ieee80211_var.h> |
| 59 | #include <net80211/ieee80211_amrr.h> |
| 60 | #include <net80211/ieee80211_radiotap.h> |
| 61 | |
| 62 | #include <dev/firmload.h> |
| 63 | |
| 64 | #include <dev/usb/usb.h> |
| 65 | #include <dev/usb/usbdi.h> |
| 66 | #include <dev/usb/usbdi_util.h> |
| 67 | #include <dev/usb/usbdevs.h> |
| 68 | |
| 69 | #include <dev/usb/if_rumreg.h> |
| 70 | #include <dev/usb/if_rumvar.h> |
| 71 | |
| 72 | #ifdef RUM_DEBUG |
| 73 | #define DPRINTF(x) do { if (rum_debug) printf x; } while (0) |
| 74 | #define DPRINTFN(n, x) do { if (rum_debug >= (n)) printf x; } while (0) |
| 75 | int rum_debug = 1; |
| 76 | #else |
| 77 | #define DPRINTF(x) |
| 78 | #define DPRINTFN(n, x) |
| 79 | #endif |
| 80 | |
| 81 | /* various supported device vendors/products */ |
| 82 | static const struct usb_devno rum_devs[] = { |
| 83 | { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, |
| 84 | { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, |
| 85 | { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, |
| 86 | { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, |
| 87 | { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, |
| 88 | { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, |
| 89 | { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, |
| 90 | { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, |
| 91 | { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, |
| 92 | { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, |
| 93 | { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050C }, |
| 94 | { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB200 }, |
| 95 | { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, |
| 96 | { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, |
| 97 | { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, |
| 98 | { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_RT2573 }, |
| 99 | { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, |
| 100 | { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, |
| 101 | { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, |
| 102 | { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, |
| 103 | { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, |
| 104 | { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, |
| 105 | { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA110 }, |
| 106 | { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, |
| 107 | { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7318 }, |
| 108 | { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7618 }, |
| 109 | { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, |
| 110 | { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, |
| 111 | { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, |
| 112 | { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, |
| 113 | { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, |
| 114 | { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, |
| 115 | { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, |
| 116 | { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, |
| 117 | { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, |
| 118 | { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HG }, |
| 119 | { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_WLIUCG }, |
| 120 | { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, |
| 121 | { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, |
| 122 | { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, |
| 123 | { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, |
| 124 | { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, |
| 125 | { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, |
| 126 | { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, |
| 127 | { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, |
| 128 | { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, |
| 129 | { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, |
| 130 | { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, |
| 131 | { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, |
| 132 | { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, |
| 133 | { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, |
| 134 | { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, |
| 135 | { USB_VENDOR_SPARKLAN, USB_PRODUCT_SPARKLAN_RT2573 }, |
| 136 | { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 }, |
| 137 | { USB_VENDOR_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } |
| 138 | }; |
| 139 | |
| 140 | static int rum_attachhook(void *); |
| 141 | static int rum_alloc_tx_list(struct rum_softc *); |
| 142 | static void rum_free_tx_list(struct rum_softc *); |
| 143 | static int rum_alloc_rx_list(struct rum_softc *); |
| 144 | static void rum_free_rx_list(struct rum_softc *); |
| 145 | static int rum_media_change(struct ifnet *); |
| 146 | static void rum_next_scan(void *); |
| 147 | static void rum_task(void *); |
| 148 | static int rum_newstate(struct ieee80211com *, |
| 149 | enum ieee80211_state, int); |
| 150 | static void rum_txeof(struct usbd_xfer *, void *, |
| 151 | usbd_status); |
| 152 | static void rum_rxeof(struct usbd_xfer *, void *, |
| 153 | usbd_status); |
| 154 | static uint8_t rum_rxrate(const struct rum_rx_desc *); |
| 155 | static int rum_ack_rate(struct ieee80211com *, int); |
| 156 | static uint16_t rum_txtime(int, int, uint32_t); |
| 157 | static uint8_t rum_plcp_signal(int); |
| 158 | static void rum_setup_tx_desc(struct rum_softc *, |
| 159 | struct rum_tx_desc *, uint32_t, uint16_t, int, |
| 160 | int); |
| 161 | static int rum_tx_data(struct rum_softc *, struct mbuf *, |
| 162 | struct ieee80211_node *); |
| 163 | static void rum_start(struct ifnet *); |
| 164 | static void rum_watchdog(struct ifnet *); |
| 165 | static int rum_ioctl(struct ifnet *, u_long, void *); |
| 166 | static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, |
| 167 | int); |
| 168 | static uint32_t rum_read(struct rum_softc *, uint16_t); |
| 169 | static void rum_read_multi(struct rum_softc *, uint16_t, void *, |
| 170 | int); |
| 171 | static void rum_write(struct rum_softc *, uint16_t, uint32_t); |
| 172 | static void rum_write_multi(struct rum_softc *, uint16_t, void *, |
| 173 | size_t); |
| 174 | static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); |
| 175 | static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); |
| 176 | static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); |
| 177 | static void rum_select_antenna(struct rum_softc *); |
| 178 | static void rum_enable_mrr(struct rum_softc *); |
| 179 | static void rum_set_txpreamble(struct rum_softc *); |
| 180 | static void rum_set_basicrates(struct rum_softc *); |
| 181 | static void rum_select_band(struct rum_softc *, |
| 182 | struct ieee80211_channel *); |
| 183 | static void rum_set_chan(struct rum_softc *, |
| 184 | struct ieee80211_channel *); |
| 185 | static void rum_enable_tsf_sync(struct rum_softc *); |
| 186 | static void rum_update_slot(struct rum_softc *); |
| 187 | static void rum_set_bssid(struct rum_softc *, const uint8_t *); |
| 188 | static void rum_set_macaddr(struct rum_softc *, const uint8_t *); |
| 189 | static void rum_update_promisc(struct rum_softc *); |
| 190 | static const char *rum_get_rf(int); |
| 191 | static void rum_read_eeprom(struct rum_softc *); |
| 192 | static int rum_bbp_init(struct rum_softc *); |
| 193 | static int rum_init(struct ifnet *); |
| 194 | static void rum_stop(struct ifnet *, int); |
| 195 | static int rum_load_microcode(struct rum_softc *, const u_char *, |
| 196 | size_t); |
| 197 | static int rum_prepare_beacon(struct rum_softc *); |
| 198 | static void rum_newassoc(struct ieee80211_node *, int); |
| 199 | static void rum_amrr_start(struct rum_softc *, |
| 200 | struct ieee80211_node *); |
| 201 | static void rum_amrr_timeout(void *); |
| 202 | static void rum_amrr_update(struct usbd_xfer *, void *, |
| 203 | usbd_status); |
| 204 | |
| 205 | /* |
| 206 | * Supported rates for 802.11a/b/g modes (in 500Kbps unit). |
| 207 | */ |
| 208 | static const struct ieee80211_rateset rum_rateset_11a = |
| 209 | { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; |
| 210 | |
| 211 | static const struct ieee80211_rateset rum_rateset_11b = |
| 212 | { 4, { 2, 4, 11, 22 } }; |
| 213 | |
| 214 | static const struct ieee80211_rateset rum_rateset_11g = |
| 215 | { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; |
| 216 | |
| 217 | static const struct { |
| 218 | uint32_t reg; |
| 219 | uint32_t val; |
| 220 | } rum_def_mac[] = { |
| 221 | RT2573_DEF_MAC |
| 222 | }; |
| 223 | |
| 224 | static const struct { |
| 225 | uint8_t reg; |
| 226 | uint8_t val; |
| 227 | } rum_def_bbp[] = { |
| 228 | RT2573_DEF_BBP |
| 229 | }; |
| 230 | |
| 231 | static const struct rfprog { |
| 232 | uint8_t chan; |
| 233 | uint32_t r1, r2, r3, r4; |
| 234 | } rum_rf5226[] = { |
| 235 | RT2573_RF5226 |
| 236 | }, rum_rf5225[] = { |
| 237 | RT2573_RF5225 |
| 238 | }; |
| 239 | |
| 240 | static int rum_match(device_t, cfdata_t, void *); |
| 241 | static void rum_attach(device_t, device_t, void *); |
| 242 | static int rum_detach(device_t, int); |
| 243 | static int rum_activate(device_t, enum devact); |
| 244 | extern struct cfdriver rum_cd; |
| 245 | CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, |
| 246 | rum_detach, rum_activate); |
| 247 | |
| 248 | static int |
| 249 | rum_match(device_t parent, cfdata_t match, void *aux) |
| 250 | { |
| 251 | struct usb_attach_arg *uaa = aux; |
| 252 | |
| 253 | return (usb_lookup(rum_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? |
| 254 | UMATCH_VENDOR_PRODUCT : UMATCH_NONE; |
| 255 | } |
| 256 | |
| 257 | static int |
| 258 | rum_attachhook(void *xsc) |
| 259 | { |
| 260 | struct rum_softc *sc = xsc; |
| 261 | firmware_handle_t fwh; |
| 262 | const char *name = "rum-rt2573" ; |
| 263 | u_char *ucode; |
| 264 | size_t size; |
| 265 | int error; |
| 266 | |
| 267 | if ((error = firmware_open("rum" , name, &fwh)) != 0) { |
| 268 | printf("%s: failed firmware_open of file %s (error %d)\n" , |
| 269 | device_xname(sc->sc_dev), name, error); |
| 270 | return error; |
| 271 | } |
| 272 | size = firmware_get_size(fwh); |
| 273 | ucode = firmware_malloc(size); |
| 274 | if (ucode == NULL) { |
| 275 | printf("%s: failed to allocate firmware memory\n" , |
| 276 | device_xname(sc->sc_dev)); |
| 277 | firmware_close(fwh); |
| 278 | return ENOMEM; |
| 279 | } |
| 280 | error = firmware_read(fwh, 0, ucode, size); |
| 281 | firmware_close(fwh); |
| 282 | if (error != 0) { |
| 283 | printf("%s: failed to read firmware (error %d)\n" , |
| 284 | device_xname(sc->sc_dev), error); |
| 285 | firmware_free(ucode, size); |
| 286 | return error; |
| 287 | } |
| 288 | |
| 289 | if (rum_load_microcode(sc, ucode, size) != 0) { |
| 290 | printf("%s: could not load 8051 microcode\n" , |
| 291 | device_xname(sc->sc_dev)); |
| 292 | firmware_free(ucode, size); |
| 293 | return ENXIO; |
| 294 | } |
| 295 | |
| 296 | firmware_free(ucode, size); |
| 297 | sc->sc_flags |= RT2573_FWLOADED; |
| 298 | |
| 299 | return 0; |
| 300 | } |
| 301 | |
| 302 | static void |
| 303 | rum_attach(device_t parent, device_t self, void *aux) |
| 304 | { |
| 305 | struct rum_softc *sc = device_private(self); |
| 306 | struct usb_attach_arg *uaa = aux; |
| 307 | struct ieee80211com *ic = &sc->sc_ic; |
| 308 | struct ifnet *ifp = &sc->sc_if; |
| 309 | usb_interface_descriptor_t *id; |
| 310 | usb_endpoint_descriptor_t *ed; |
| 311 | usbd_status error; |
| 312 | char *devinfop; |
| 313 | int i, ntries; |
| 314 | uint32_t tmp; |
| 315 | |
| 316 | sc->sc_dev = self; |
| 317 | sc->sc_udev = uaa->uaa_device; |
| 318 | sc->sc_flags = 0; |
| 319 | |
| 320 | aprint_naive("\n" ); |
| 321 | aprint_normal("\n" ); |
| 322 | |
| 323 | devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); |
| 324 | aprint_normal_dev(self, "%s\n" , devinfop); |
| 325 | usbd_devinfo_free(devinfop); |
| 326 | |
| 327 | error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); |
| 328 | if (error != 0) { |
| 329 | aprint_error_dev(self, "failed to set configuration" |
| 330 | ", err=%s\n" , usbd_errstr(error)); |
| 331 | return; |
| 332 | } |
| 333 | |
| 334 | /* get the first interface handle */ |
| 335 | error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, |
| 336 | &sc->sc_iface); |
| 337 | if (error != 0) { |
| 338 | aprint_error_dev(self, "could not get interface handle\n" ); |
| 339 | return; |
| 340 | } |
| 341 | |
| 342 | /* |
| 343 | * Find endpoints. |
| 344 | */ |
| 345 | id = usbd_get_interface_descriptor(sc->sc_iface); |
| 346 | |
| 347 | sc->sc_rx_no = sc->sc_tx_no = -1; |
| 348 | for (i = 0; i < id->bNumEndpoints; i++) { |
| 349 | ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); |
| 350 | if (ed == NULL) { |
| 351 | aprint_error_dev(self, |
| 352 | "no endpoint descriptor for iface %d\n" , i); |
| 353 | return; |
| 354 | } |
| 355 | |
| 356 | if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && |
| 357 | UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) |
| 358 | sc->sc_rx_no = ed->bEndpointAddress; |
| 359 | else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && |
| 360 | UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) |
| 361 | sc->sc_tx_no = ed->bEndpointAddress; |
| 362 | } |
| 363 | if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { |
| 364 | aprint_error_dev(self, "missing endpoint\n" ); |
| 365 | return; |
| 366 | } |
| 367 | |
| 368 | usb_init_task(&sc->sc_task, rum_task, sc, 0); |
| 369 | callout_init(&sc->sc_scan_ch, 0); |
| 370 | |
| 371 | sc->amrr.amrr_min_success_threshold = 1; |
| 372 | sc->amrr.amrr_max_success_threshold = 10; |
| 373 | callout_init(&sc->sc_amrr_ch, 0); |
| 374 | |
| 375 | /* retrieve RT2573 rev. no */ |
| 376 | for (ntries = 0; ntries < 1000; ntries++) { |
| 377 | if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) |
| 378 | break; |
| 379 | DELAY(1000); |
| 380 | } |
| 381 | if (ntries == 1000) { |
| 382 | aprint_error_dev(self, "timeout waiting for chip to settle\n" ); |
| 383 | return; |
| 384 | } |
| 385 | |
| 386 | /* retrieve MAC address and various other things from EEPROM */ |
| 387 | rum_read_eeprom(sc); |
| 388 | |
| 389 | aprint_normal_dev(self, |
| 390 | "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n" , |
| 391 | sc->macbbp_rev, tmp, |
| 392 | rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); |
| 393 | |
| 394 | ic->ic_ifp = ifp; |
| 395 | ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ |
| 396 | ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ |
| 397 | ic->ic_state = IEEE80211_S_INIT; |
| 398 | |
| 399 | /* set device capabilities */ |
| 400 | ic->ic_caps = |
| 401 | IEEE80211_C_IBSS | /* IBSS mode supported */ |
| 402 | IEEE80211_C_MONITOR | /* monitor mode supported */ |
| 403 | IEEE80211_C_HOSTAP | /* HostAp mode supported */ |
| 404 | IEEE80211_C_TXPMGT | /* tx power management */ |
| 405 | IEEE80211_C_SHPREAMBLE | /* short preamble supported */ |
| 406 | IEEE80211_C_SHSLOT | /* short slot time supported */ |
| 407 | IEEE80211_C_WPA; /* 802.11i */ |
| 408 | |
| 409 | if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { |
| 410 | /* set supported .11a rates */ |
| 411 | ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; |
| 412 | |
| 413 | /* set supported .11a channels */ |
| 414 | for (i = 34; i <= 46; i += 4) { |
| 415 | ic->ic_channels[i].ic_freq = |
| 416 | ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); |
| 417 | ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; |
| 418 | } |
| 419 | for (i = 36; i <= 64; i += 4) { |
| 420 | ic->ic_channels[i].ic_freq = |
| 421 | ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); |
| 422 | ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; |
| 423 | } |
| 424 | for (i = 100; i <= 140; i += 4) { |
| 425 | ic->ic_channels[i].ic_freq = |
| 426 | ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); |
| 427 | ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; |
| 428 | } |
| 429 | for (i = 149; i <= 165; i += 4) { |
| 430 | ic->ic_channels[i].ic_freq = |
| 431 | ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); |
| 432 | ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | /* set supported .11b and .11g rates */ |
| 437 | ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; |
| 438 | ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; |
| 439 | |
| 440 | /* set supported .11b and .11g channels (1 through 14) */ |
| 441 | for (i = 1; i <= 14; i++) { |
| 442 | ic->ic_channels[i].ic_freq = |
| 443 | ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); |
| 444 | ic->ic_channels[i].ic_flags = |
| 445 | IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | |
| 446 | IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; |
| 447 | } |
| 448 | |
| 449 | ifp->if_softc = sc; |
| 450 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
| 451 | ifp->if_init = rum_init; |
| 452 | ifp->if_ioctl = rum_ioctl; |
| 453 | ifp->if_start = rum_start; |
| 454 | ifp->if_watchdog = rum_watchdog; |
| 455 | IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); |
| 456 | IFQ_SET_READY(&ifp->if_snd); |
| 457 | memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); |
| 458 | |
| 459 | if_attach(ifp); |
| 460 | ieee80211_ifattach(ic); |
| 461 | ic->ic_newassoc = rum_newassoc; |
| 462 | |
| 463 | /* override state transition machine */ |
| 464 | sc->sc_newstate = ic->ic_newstate; |
| 465 | ic->ic_newstate = rum_newstate; |
| 466 | ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); |
| 467 | |
| 468 | bpf_attach2(ifp, DLT_IEEE802_11_RADIO, |
| 469 | sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, |
| 470 | &sc->sc_drvbpf); |
| 471 | |
| 472 | sc->sc_rxtap_len = sizeof(sc->sc_rxtapu); |
| 473 | sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); |
| 474 | sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); |
| 475 | |
| 476 | sc->sc_txtap_len = sizeof(sc->sc_txtapu); |
| 477 | sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); |
| 478 | sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); |
| 479 | |
| 480 | ieee80211_announce(ic); |
| 481 | |
| 482 | usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); |
| 483 | |
| 484 | if (!pmf_device_register(self, NULL, NULL)) |
| 485 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 486 | |
| 487 | return; |
| 488 | } |
| 489 | |
| 490 | static int |
| 491 | rum_detach(device_t self, int flags) |
| 492 | { |
| 493 | struct rum_softc *sc = device_private(self); |
| 494 | struct ieee80211com *ic = &sc->sc_ic; |
| 495 | struct ifnet *ifp = &sc->sc_if; |
| 496 | int s; |
| 497 | |
| 498 | if (!ifp->if_softc) |
| 499 | return 0; |
| 500 | |
| 501 | pmf_device_deregister(self); |
| 502 | |
| 503 | s = splusb(); |
| 504 | |
| 505 | rum_stop(ifp, 1); |
| 506 | usb_rem_task(sc->sc_udev, &sc->sc_task); |
| 507 | callout_stop(&sc->sc_scan_ch); |
| 508 | callout_stop(&sc->sc_amrr_ch); |
| 509 | |
| 510 | bpf_detach(ifp); |
| 511 | ieee80211_ifdetach(ic); /* free all nodes */ |
| 512 | if_detach(ifp); |
| 513 | |
| 514 | splx(s); |
| 515 | |
| 516 | usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); |
| 517 | |
| 518 | return 0; |
| 519 | } |
| 520 | |
| 521 | static int |
| 522 | rum_alloc_tx_list(struct rum_softc *sc) |
| 523 | { |
| 524 | struct rum_tx_data *data; |
| 525 | int i, error; |
| 526 | |
| 527 | sc->tx_cur = sc->tx_queued = 0; |
| 528 | |
| 529 | for (i = 0; i < RUM_TX_LIST_COUNT; i++) { |
| 530 | data = &sc->tx_data[i]; |
| 531 | |
| 532 | data->sc = sc; |
| 533 | |
| 534 | error = usbd_create_xfer(sc->sc_tx_pipeh, |
| 535 | RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN, |
| 536 | USBD_FORCE_SHORT_XFER, 0, &data->xfer); |
| 537 | if (error) { |
| 538 | printf("%s: could not allocate tx xfer\n" , |
| 539 | device_xname(sc->sc_dev)); |
| 540 | goto fail; |
| 541 | } |
| 542 | data->buf = usbd_get_buffer(data->xfer); |
| 543 | |
| 544 | /* clean Tx descriptor */ |
| 545 | memset(data->buf, 0, RT2573_TX_DESC_SIZE); |
| 546 | } |
| 547 | |
| 548 | return 0; |
| 549 | |
| 550 | fail: rum_free_tx_list(sc); |
| 551 | return error; |
| 552 | } |
| 553 | |
| 554 | static void |
| 555 | rum_free_tx_list(struct rum_softc *sc) |
| 556 | { |
| 557 | struct rum_tx_data *data; |
| 558 | int i; |
| 559 | |
| 560 | for (i = 0; i < RUM_TX_LIST_COUNT; i++) { |
| 561 | data = &sc->tx_data[i]; |
| 562 | |
| 563 | if (data->xfer != NULL) { |
| 564 | usbd_destroy_xfer(data->xfer); |
| 565 | data->xfer = NULL; |
| 566 | } |
| 567 | |
| 568 | if (data->ni != NULL) { |
| 569 | ieee80211_free_node(data->ni); |
| 570 | data->ni = NULL; |
| 571 | } |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | static int |
| 576 | rum_alloc_rx_list(struct rum_softc *sc) |
| 577 | { |
| 578 | struct rum_rx_data *data; |
| 579 | int i, error; |
| 580 | |
| 581 | for (i = 0; i < RUM_RX_LIST_COUNT; i++) { |
| 582 | data = &sc->rx_data[i]; |
| 583 | |
| 584 | data->sc = sc; |
| 585 | |
| 586 | error = usbd_create_xfer(sc->sc_rx_pipeh, MCLBYTES, |
| 587 | USBD_SHORT_XFER_OK, 0, &data->xfer); |
| 588 | if (error) { |
| 589 | printf("%s: could not allocate rx xfer\n" , |
| 590 | device_xname(sc->sc_dev)); |
| 591 | goto fail; |
| 592 | } |
| 593 | |
| 594 | MGETHDR(data->m, M_DONTWAIT, MT_DATA); |
| 595 | if (data->m == NULL) { |
| 596 | printf("%s: could not allocate rx mbuf\n" , |
| 597 | device_xname(sc->sc_dev)); |
| 598 | error = ENOMEM; |
| 599 | goto fail; |
| 600 | } |
| 601 | |
| 602 | MCLGET(data->m, M_DONTWAIT); |
| 603 | if (!(data->m->m_flags & M_EXT)) { |
| 604 | printf("%s: could not allocate rx mbuf cluster\n" , |
| 605 | device_xname(sc->sc_dev)); |
| 606 | error = ENOMEM; |
| 607 | goto fail; |
| 608 | } |
| 609 | |
| 610 | data->buf = mtod(data->m, uint8_t *); |
| 611 | } |
| 612 | |
| 613 | return 0; |
| 614 | |
| 615 | fail: rum_free_rx_list(sc); |
| 616 | return error; |
| 617 | } |
| 618 | |
| 619 | static void |
| 620 | rum_free_rx_list(struct rum_softc *sc) |
| 621 | { |
| 622 | struct rum_rx_data *data; |
| 623 | int i; |
| 624 | |
| 625 | for (i = 0; i < RUM_RX_LIST_COUNT; i++) { |
| 626 | data = &sc->rx_data[i]; |
| 627 | |
| 628 | if (data->xfer != NULL) { |
| 629 | usbd_destroy_xfer(data->xfer); |
| 630 | data->xfer = NULL; |
| 631 | } |
| 632 | |
| 633 | if (data->m != NULL) { |
| 634 | m_freem(data->m); |
| 635 | data->m = NULL; |
| 636 | } |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | static int |
| 641 | rum_media_change(struct ifnet *ifp) |
| 642 | { |
| 643 | int error; |
| 644 | |
| 645 | error = ieee80211_media_change(ifp); |
| 646 | if (error != ENETRESET) |
| 647 | return error; |
| 648 | |
| 649 | if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) |
| 650 | rum_init(ifp); |
| 651 | |
| 652 | return 0; |
| 653 | } |
| 654 | |
| 655 | /* |
| 656 | * This function is called periodically (every 200ms) during scanning to |
| 657 | * switch from one channel to another. |
| 658 | */ |
| 659 | static void |
| 660 | rum_next_scan(void *arg) |
| 661 | { |
| 662 | struct rum_softc *sc = arg; |
| 663 | struct ieee80211com *ic = &sc->sc_ic; |
| 664 | int s; |
| 665 | |
| 666 | s = splnet(); |
| 667 | if (ic->ic_state == IEEE80211_S_SCAN) |
| 668 | ieee80211_next_scan(ic); |
| 669 | splx(s); |
| 670 | } |
| 671 | |
| 672 | static void |
| 673 | rum_task(void *arg) |
| 674 | { |
| 675 | struct rum_softc *sc = arg; |
| 676 | struct ieee80211com *ic = &sc->sc_ic; |
| 677 | enum ieee80211_state ostate; |
| 678 | struct ieee80211_node *ni; |
| 679 | uint32_t tmp; |
| 680 | |
| 681 | ostate = ic->ic_state; |
| 682 | |
| 683 | switch (sc->sc_state) { |
| 684 | case IEEE80211_S_INIT: |
| 685 | if (ostate == IEEE80211_S_RUN) { |
| 686 | /* abort TSF synchronization */ |
| 687 | tmp = rum_read(sc, RT2573_TXRX_CSR9); |
| 688 | rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); |
| 689 | } |
| 690 | break; |
| 691 | |
| 692 | case IEEE80211_S_SCAN: |
| 693 | rum_set_chan(sc, ic->ic_curchan); |
| 694 | callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); |
| 695 | break; |
| 696 | |
| 697 | case IEEE80211_S_AUTH: |
| 698 | rum_set_chan(sc, ic->ic_curchan); |
| 699 | break; |
| 700 | |
| 701 | case IEEE80211_S_ASSOC: |
| 702 | rum_set_chan(sc, ic->ic_curchan); |
| 703 | break; |
| 704 | |
| 705 | case IEEE80211_S_RUN: |
| 706 | rum_set_chan(sc, ic->ic_curchan); |
| 707 | |
| 708 | ni = ic->ic_bss; |
| 709 | |
| 710 | if (ic->ic_opmode != IEEE80211_M_MONITOR) { |
| 711 | rum_update_slot(sc); |
| 712 | rum_enable_mrr(sc); |
| 713 | rum_set_txpreamble(sc); |
| 714 | rum_set_basicrates(sc); |
| 715 | rum_set_bssid(sc, ni->ni_bssid); |
| 716 | } |
| 717 | |
| 718 | if (ic->ic_opmode == IEEE80211_M_HOSTAP || |
| 719 | ic->ic_opmode == IEEE80211_M_IBSS) |
| 720 | rum_prepare_beacon(sc); |
| 721 | |
| 722 | if (ic->ic_opmode != IEEE80211_M_MONITOR) |
| 723 | rum_enable_tsf_sync(sc); |
| 724 | |
| 725 | if (ic->ic_opmode == IEEE80211_M_STA) { |
| 726 | /* fake a join to init the tx rate */ |
| 727 | rum_newassoc(ic->ic_bss, 1); |
| 728 | |
| 729 | /* enable automatic rate adaptation in STA mode */ |
| 730 | if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) |
| 731 | rum_amrr_start(sc, ni); |
| 732 | } |
| 733 | |
| 734 | break; |
| 735 | } |
| 736 | |
| 737 | sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); |
| 738 | } |
| 739 | |
| 740 | static int |
| 741 | rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) |
| 742 | { |
| 743 | struct rum_softc *sc = ic->ic_ifp->if_softc; |
| 744 | |
| 745 | usb_rem_task(sc->sc_udev, &sc->sc_task); |
| 746 | callout_stop(&sc->sc_scan_ch); |
| 747 | callout_stop(&sc->sc_amrr_ch); |
| 748 | |
| 749 | /* do it in a process context */ |
| 750 | sc->sc_state = nstate; |
| 751 | sc->sc_arg = arg; |
| 752 | usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); |
| 753 | |
| 754 | return 0; |
| 755 | } |
| 756 | |
| 757 | /* quickly determine if a given rate is CCK or OFDM */ |
| 758 | #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) |
| 759 | |
| 760 | #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ |
| 761 | #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ |
| 762 | |
| 763 | static void |
| 764 | rum_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) |
| 765 | { |
| 766 | struct rum_tx_data *data = priv; |
| 767 | struct rum_softc *sc = data->sc; |
| 768 | struct ifnet *ifp = &sc->sc_if; |
| 769 | int s; |
| 770 | |
| 771 | if (status != USBD_NORMAL_COMPLETION) { |
| 772 | if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) |
| 773 | return; |
| 774 | |
| 775 | printf("%s: could not transmit buffer: %s\n" , |
| 776 | device_xname(sc->sc_dev), usbd_errstr(status)); |
| 777 | |
| 778 | if (status == USBD_STALLED) |
| 779 | usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); |
| 780 | |
| 781 | ifp->if_oerrors++; |
| 782 | return; |
| 783 | } |
| 784 | |
| 785 | s = splnet(); |
| 786 | |
| 787 | ieee80211_free_node(data->ni); |
| 788 | data->ni = NULL; |
| 789 | |
| 790 | sc->tx_queued--; |
| 791 | ifp->if_opackets++; |
| 792 | |
| 793 | DPRINTFN(10, ("tx done\n" )); |
| 794 | |
| 795 | sc->sc_tx_timer = 0; |
| 796 | ifp->if_flags &= ~IFF_OACTIVE; |
| 797 | rum_start(ifp); |
| 798 | |
| 799 | splx(s); |
| 800 | } |
| 801 | |
| 802 | static void |
| 803 | rum_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) |
| 804 | { |
| 805 | struct rum_rx_data *data = priv; |
| 806 | struct rum_softc *sc = data->sc; |
| 807 | struct ieee80211com *ic = &sc->sc_ic; |
| 808 | struct ifnet *ifp = &sc->sc_if; |
| 809 | struct rum_rx_desc *desc; |
| 810 | struct ieee80211_frame *wh; |
| 811 | struct ieee80211_node *ni; |
| 812 | struct mbuf *mnew, *m; |
| 813 | int s, len; |
| 814 | |
| 815 | if (status != USBD_NORMAL_COMPLETION) { |
| 816 | if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) |
| 817 | return; |
| 818 | |
| 819 | if (status == USBD_STALLED) |
| 820 | usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); |
| 821 | goto skip; |
| 822 | } |
| 823 | |
| 824 | usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); |
| 825 | |
| 826 | if (len < (int)(RT2573_RX_DESC_SIZE + |
| 827 | sizeof(struct ieee80211_frame_min))) { |
| 828 | DPRINTF(("%s: xfer too short %d\n" , device_xname(sc->sc_dev), |
| 829 | len)); |
| 830 | ifp->if_ierrors++; |
| 831 | goto skip; |
| 832 | } |
| 833 | |
| 834 | desc = (struct rum_rx_desc *)data->buf; |
| 835 | |
| 836 | if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { |
| 837 | /* |
| 838 | * This should not happen since we did not request to receive |
| 839 | * those frames when we filled RT2573_TXRX_CSR0. |
| 840 | */ |
| 841 | DPRINTFN(5, ("CRC error\n" )); |
| 842 | ifp->if_ierrors++; |
| 843 | goto skip; |
| 844 | } |
| 845 | |
| 846 | MGETHDR(mnew, M_DONTWAIT, MT_DATA); |
| 847 | if (mnew == NULL) { |
| 848 | printf("%s: could not allocate rx mbuf\n" , |
| 849 | device_xname(sc->sc_dev)); |
| 850 | ifp->if_ierrors++; |
| 851 | goto skip; |
| 852 | } |
| 853 | |
| 854 | MCLGET(mnew, M_DONTWAIT); |
| 855 | if (!(mnew->m_flags & M_EXT)) { |
| 856 | printf("%s: could not allocate rx mbuf cluster\n" , |
| 857 | device_xname(sc->sc_dev)); |
| 858 | m_freem(mnew); |
| 859 | ifp->if_ierrors++; |
| 860 | goto skip; |
| 861 | } |
| 862 | |
| 863 | m = data->m; |
| 864 | data->m = mnew; |
| 865 | data->buf = mtod(data->m, uint8_t *); |
| 866 | |
| 867 | /* finalize mbuf */ |
| 868 | m_set_rcvif(m, ifp); |
| 869 | m->m_data = (void *)(desc + 1); |
| 870 | m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; |
| 871 | |
| 872 | s = splnet(); |
| 873 | |
| 874 | if (sc->sc_drvbpf != NULL) { |
| 875 | struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; |
| 876 | |
| 877 | tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; |
| 878 | tap->wr_rate = rum_rxrate(desc); |
| 879 | tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); |
| 880 | tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); |
| 881 | tap->wr_antenna = sc->rx_ant; |
| 882 | tap->wr_antsignal = desc->rssi; |
| 883 | |
| 884 | bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); |
| 885 | } |
| 886 | |
| 887 | wh = mtod(m, struct ieee80211_frame *); |
| 888 | ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); |
| 889 | |
| 890 | /* send the frame to the 802.11 layer */ |
| 891 | ieee80211_input(ic, m, ni, desc->rssi, 0); |
| 892 | |
| 893 | /* node is no longer needed */ |
| 894 | ieee80211_free_node(ni); |
| 895 | |
| 896 | splx(s); |
| 897 | |
| 898 | DPRINTFN(15, ("rx done\n" )); |
| 899 | |
| 900 | skip: /* setup a new transfer */ |
| 901 | usbd_setup_xfer(xfer, data, data->buf, MCLBYTES, USBD_SHORT_XFER_OK, |
| 902 | USBD_NO_TIMEOUT, rum_rxeof); |
| 903 | usbd_transfer(xfer); |
| 904 | } |
| 905 | |
| 906 | /* |
| 907 | * This function is only used by the Rx radiotap code. It returns the rate at |
| 908 | * which a given frame was received. |
| 909 | */ |
| 910 | static uint8_t |
| 911 | rum_rxrate(const struct rum_rx_desc *desc) |
| 912 | { |
| 913 | if (le32toh(desc->flags) & RT2573_RX_OFDM) { |
| 914 | /* reverse function of rum_plcp_signal */ |
| 915 | switch (desc->rate) { |
| 916 | case 0xb: return 12; |
| 917 | case 0xf: return 18; |
| 918 | case 0xa: return 24; |
| 919 | case 0xe: return 36; |
| 920 | case 0x9: return 48; |
| 921 | case 0xd: return 72; |
| 922 | case 0x8: return 96; |
| 923 | case 0xc: return 108; |
| 924 | } |
| 925 | } else { |
| 926 | if (desc->rate == 10) |
| 927 | return 2; |
| 928 | if (desc->rate == 20) |
| 929 | return 4; |
| 930 | if (desc->rate == 55) |
| 931 | return 11; |
| 932 | if (desc->rate == 110) |
| 933 | return 22; |
| 934 | } |
| 935 | return 2; /* should not get there */ |
| 936 | } |
| 937 | |
| 938 | /* |
| 939 | * Return the expected ack rate for a frame transmitted at rate `rate'. |
| 940 | * XXX: this should depend on the destination node basic rate set. |
| 941 | */ |
| 942 | static int |
| 943 | rum_ack_rate(struct ieee80211com *ic, int rate) |
| 944 | { |
| 945 | switch (rate) { |
| 946 | /* CCK rates */ |
| 947 | case 2: |
| 948 | return 2; |
| 949 | case 4: |
| 950 | case 11: |
| 951 | case 22: |
| 952 | return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; |
| 953 | |
| 954 | /* OFDM rates */ |
| 955 | case 12: |
| 956 | case 18: |
| 957 | return 12; |
| 958 | case 24: |
| 959 | case 36: |
| 960 | return 24; |
| 961 | case 48: |
| 962 | case 72: |
| 963 | case 96: |
| 964 | case 108: |
| 965 | return 48; |
| 966 | } |
| 967 | |
| 968 | /* default to 1Mbps */ |
| 969 | return 2; |
| 970 | } |
| 971 | |
| 972 | /* |
| 973 | * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. |
| 974 | * The function automatically determines the operating mode depending on the |
| 975 | * given rate. `flags' indicates whether short preamble is in use or not. |
| 976 | */ |
| 977 | static uint16_t |
| 978 | rum_txtime(int len, int rate, uint32_t flags) |
| 979 | { |
| 980 | uint16_t txtime; |
| 981 | |
| 982 | if (RUM_RATE_IS_OFDM(rate)) { |
| 983 | /* IEEE Std 802.11a-1999, pp. 37 */ |
| 984 | txtime = (8 + 4 * len + 3 + rate - 1) / rate; |
| 985 | txtime = 16 + 4 + 4 * txtime + 6; |
| 986 | } else { |
| 987 | /* IEEE Std 802.11b-1999, pp. 28 */ |
| 988 | txtime = (16 * len + rate - 1) / rate; |
| 989 | if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) |
| 990 | txtime += 72 + 24; |
| 991 | else |
| 992 | txtime += 144 + 48; |
| 993 | } |
| 994 | return txtime; |
| 995 | } |
| 996 | |
| 997 | static uint8_t |
| 998 | rum_plcp_signal(int rate) |
| 999 | { |
| 1000 | switch (rate) { |
| 1001 | /* CCK rates (returned values are device-dependent) */ |
| 1002 | case 2: return 0x0; |
| 1003 | case 4: return 0x1; |
| 1004 | case 11: return 0x2; |
| 1005 | case 22: return 0x3; |
| 1006 | |
| 1007 | /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ |
| 1008 | case 12: return 0xb; |
| 1009 | case 18: return 0xf; |
| 1010 | case 24: return 0xa; |
| 1011 | case 36: return 0xe; |
| 1012 | case 48: return 0x9; |
| 1013 | case 72: return 0xd; |
| 1014 | case 96: return 0x8; |
| 1015 | case 108: return 0xc; |
| 1016 | |
| 1017 | /* unsupported rates (should not get there) */ |
| 1018 | default: return 0xff; |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | static void |
| 1023 | rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, |
| 1024 | uint32_t flags, uint16_t xflags, int len, int rate) |
| 1025 | { |
| 1026 | struct ieee80211com *ic = &sc->sc_ic; |
| 1027 | uint16_t plcp_length; |
| 1028 | int remainder; |
| 1029 | |
| 1030 | desc->flags = htole32(flags); |
| 1031 | desc->flags |= htole32(RT2573_TX_VALID); |
| 1032 | desc->flags |= htole32(len << 16); |
| 1033 | |
| 1034 | desc->xflags = htole16(xflags); |
| 1035 | |
| 1036 | desc->wme = htole16( |
| 1037 | RT2573_QID(0) | |
| 1038 | RT2573_AIFSN(2) | |
| 1039 | RT2573_LOGCWMIN(4) | |
| 1040 | RT2573_LOGCWMAX(10)); |
| 1041 | |
| 1042 | /* setup PLCP fields */ |
| 1043 | desc->plcp_signal = rum_plcp_signal(rate); |
| 1044 | desc->plcp_service = 4; |
| 1045 | |
| 1046 | len += IEEE80211_CRC_LEN; |
| 1047 | if (RUM_RATE_IS_OFDM(rate)) { |
| 1048 | desc->flags |= htole32(RT2573_TX_OFDM); |
| 1049 | |
| 1050 | plcp_length = len & 0xfff; |
| 1051 | desc->plcp_length_hi = plcp_length >> 6; |
| 1052 | desc->plcp_length_lo = plcp_length & 0x3f; |
| 1053 | } else { |
| 1054 | plcp_length = (16 * len + rate - 1) / rate; |
| 1055 | if (rate == 22) { |
| 1056 | remainder = (16 * len) % 22; |
| 1057 | if (remainder != 0 && remainder < 7) |
| 1058 | desc->plcp_service |= RT2573_PLCP_LENGEXT; |
| 1059 | } |
| 1060 | desc->plcp_length_hi = plcp_length >> 8; |
| 1061 | desc->plcp_length_lo = plcp_length & 0xff; |
| 1062 | |
| 1063 | if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) |
| 1064 | desc->plcp_signal |= 0x08; |
| 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | #define RUM_TX_TIMEOUT 5000 |
| 1069 | |
| 1070 | static int |
| 1071 | rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) |
| 1072 | { |
| 1073 | struct ieee80211com *ic = &sc->sc_ic; |
| 1074 | struct rum_tx_desc *desc; |
| 1075 | struct rum_tx_data *data; |
| 1076 | struct ieee80211_frame *wh; |
| 1077 | struct ieee80211_key *k; |
| 1078 | uint32_t flags = 0; |
| 1079 | uint16_t dur; |
| 1080 | usbd_status error; |
| 1081 | int rate, xferlen, pktlen, needrts = 0, needcts = 0; |
| 1082 | |
| 1083 | wh = mtod(m0, struct ieee80211_frame *); |
| 1084 | |
| 1085 | if (wh->i_fc[1] & IEEE80211_FC1_WEP) { |
| 1086 | k = ieee80211_crypto_encap(ic, ni, m0); |
| 1087 | if (k == NULL) { |
| 1088 | m_freem(m0); |
| 1089 | return ENOBUFS; |
| 1090 | } |
| 1091 | |
| 1092 | /* packet header may have moved, reset our local pointer */ |
| 1093 | wh = mtod(m0, struct ieee80211_frame *); |
| 1094 | } |
| 1095 | |
| 1096 | /* compute actual packet length (including CRC and crypto overhead) */ |
| 1097 | pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; |
| 1098 | |
| 1099 | /* pickup a rate */ |
| 1100 | if (IEEE80211_IS_MULTICAST(wh->i_addr1) || |
| 1101 | ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == |
| 1102 | IEEE80211_FC0_TYPE_MGT)) { |
| 1103 | /* mgmt/multicast frames are sent at the lowest avail. rate */ |
| 1104 | rate = ni->ni_rates.rs_rates[0]; |
| 1105 | } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { |
| 1106 | rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; |
| 1107 | } else |
| 1108 | rate = ni->ni_rates.rs_rates[ni->ni_txrate]; |
| 1109 | if (rate == 0) |
| 1110 | rate = 2; /* XXX should not happen */ |
| 1111 | rate &= IEEE80211_RATE_VAL; |
| 1112 | |
| 1113 | /* check if RTS/CTS or CTS-to-self protection must be used */ |
| 1114 | if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { |
| 1115 | /* multicast frames are not sent at OFDM rates in 802.11b/g */ |
| 1116 | if (pktlen > ic->ic_rtsthreshold) { |
| 1117 | needrts = 1; /* RTS/CTS based on frame length */ |
| 1118 | } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && |
| 1119 | RUM_RATE_IS_OFDM(rate)) { |
| 1120 | if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) |
| 1121 | needcts = 1; /* CTS-to-self */ |
| 1122 | else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) |
| 1123 | needrts = 1; /* RTS/CTS */ |
| 1124 | } |
| 1125 | } |
| 1126 | if (needrts || needcts) { |
| 1127 | struct mbuf *mprot; |
| 1128 | int protrate, ackrate; |
| 1129 | |
| 1130 | protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; |
| 1131 | ackrate = rum_ack_rate(ic, rate); |
| 1132 | |
| 1133 | dur = rum_txtime(pktlen, rate, ic->ic_flags) + |
| 1134 | rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + |
| 1135 | 2 * sc->sifs; |
| 1136 | if (needrts) { |
| 1137 | dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, |
| 1138 | protrate), ic->ic_flags) + sc->sifs; |
| 1139 | mprot = ieee80211_get_rts(ic, wh, dur); |
| 1140 | } else { |
| 1141 | mprot = ieee80211_get_cts_to_self(ic, dur); |
| 1142 | } |
| 1143 | if (mprot == NULL) { |
| 1144 | aprint_error_dev(sc->sc_dev, |
| 1145 | "couldn't allocate protection frame\n" ); |
| 1146 | m_freem(m0); |
| 1147 | return ENOBUFS; |
| 1148 | } |
| 1149 | |
| 1150 | data = &sc->tx_data[sc->tx_cur]; |
| 1151 | desc = (struct rum_tx_desc *)data->buf; |
| 1152 | |
| 1153 | /* avoid multiple free() of the same node for each fragment */ |
| 1154 | data->ni = ieee80211_ref_node(ni); |
| 1155 | |
| 1156 | m_copydata(mprot, 0, mprot->m_pkthdr.len, |
| 1157 | data->buf + RT2573_TX_DESC_SIZE); |
| 1158 | rum_setup_tx_desc(sc, desc, |
| 1159 | (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, |
| 1160 | 0, mprot->m_pkthdr.len, protrate); |
| 1161 | |
| 1162 | /* no roundup necessary here */ |
| 1163 | xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; |
| 1164 | |
| 1165 | /* XXX may want to pass the protection frame to BPF */ |
| 1166 | |
| 1167 | /* mbuf is no longer needed */ |
| 1168 | m_freem(mprot); |
| 1169 | |
| 1170 | usbd_setup_xfer(data->xfer, data, data->buf, |
| 1171 | xferlen, USBD_FORCE_SHORT_XFER, |
| 1172 | RUM_TX_TIMEOUT, rum_txeof); |
| 1173 | error = usbd_transfer(data->xfer); |
| 1174 | if (error != USBD_NORMAL_COMPLETION && |
| 1175 | error != USBD_IN_PROGRESS) { |
| 1176 | m_freem(m0); |
| 1177 | return error; |
| 1178 | } |
| 1179 | |
| 1180 | sc->tx_queued++; |
| 1181 | sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; |
| 1182 | |
| 1183 | flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; |
| 1184 | } |
| 1185 | |
| 1186 | data = &sc->tx_data[sc->tx_cur]; |
| 1187 | desc = (struct rum_tx_desc *)data->buf; |
| 1188 | |
| 1189 | data->ni = ni; |
| 1190 | |
| 1191 | if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { |
| 1192 | flags |= RT2573_TX_NEED_ACK; |
| 1193 | |
| 1194 | dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), |
| 1195 | ic->ic_flags) + sc->sifs; |
| 1196 | *(uint16_t *)wh->i_dur = htole16(dur); |
| 1197 | |
| 1198 | /* tell hardware to set timestamp in probe responses */ |
| 1199 | if ((wh->i_fc[0] & |
| 1200 | (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == |
| 1201 | (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) |
| 1202 | flags |= RT2573_TX_TIMESTAMP; |
| 1203 | } |
| 1204 | |
| 1205 | if (sc->sc_drvbpf != NULL) { |
| 1206 | struct rum_tx_radiotap_header *tap = &sc->sc_txtap; |
| 1207 | |
| 1208 | tap->wt_flags = 0; |
| 1209 | tap->wt_rate = rate; |
| 1210 | tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); |
| 1211 | tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); |
| 1212 | tap->wt_antenna = sc->tx_ant; |
| 1213 | |
| 1214 | bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); |
| 1215 | } |
| 1216 | |
| 1217 | m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); |
| 1218 | rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); |
| 1219 | |
| 1220 | /* align end on a 4-bytes boundary */ |
| 1221 | xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; |
| 1222 | |
| 1223 | /* |
| 1224 | * No space left in the last URB to store the extra 4 bytes, force |
| 1225 | * sending of another URB. |
| 1226 | */ |
| 1227 | if ((xferlen % 64) == 0) |
| 1228 | xferlen += 4; |
| 1229 | |
| 1230 | DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n" , |
| 1231 | (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, |
| 1232 | rate, xferlen)); |
| 1233 | |
| 1234 | /* mbuf is no longer needed */ |
| 1235 | m_freem(m0); |
| 1236 | |
| 1237 | usbd_setup_xfer(data->xfer, data, data->buf, xferlen, |
| 1238 | USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); |
| 1239 | error = usbd_transfer(data->xfer); |
| 1240 | if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) |
| 1241 | return error; |
| 1242 | |
| 1243 | sc->tx_queued++; |
| 1244 | sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; |
| 1245 | |
| 1246 | return 0; |
| 1247 | } |
| 1248 | |
| 1249 | static void |
| 1250 | rum_start(struct ifnet *ifp) |
| 1251 | { |
| 1252 | struct rum_softc *sc = ifp->if_softc; |
| 1253 | struct ieee80211com *ic = &sc->sc_ic; |
| 1254 | struct ether_header *eh; |
| 1255 | struct ieee80211_node *ni; |
| 1256 | struct mbuf *m0; |
| 1257 | |
| 1258 | if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) |
| 1259 | return; |
| 1260 | |
| 1261 | for (;;) { |
| 1262 | IF_POLL(&ic->ic_mgtq, m0); |
| 1263 | if (m0 != NULL) { |
| 1264 | if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { |
| 1265 | ifp->if_flags |= IFF_OACTIVE; |
| 1266 | break; |
| 1267 | } |
| 1268 | IF_DEQUEUE(&ic->ic_mgtq, m0); |
| 1269 | |
| 1270 | ni = M_GETCTX(m0, struct ieee80211_node *); |
| 1271 | M_CLEARCTX(m0); |
| 1272 | bpf_mtap3(ic->ic_rawbpf, m0); |
| 1273 | if (rum_tx_data(sc, m0, ni) != 0) |
| 1274 | break; |
| 1275 | |
| 1276 | } else { |
| 1277 | if (ic->ic_state != IEEE80211_S_RUN) |
| 1278 | break; |
| 1279 | IFQ_POLL(&ifp->if_snd, m0); |
| 1280 | if (m0 == NULL) |
| 1281 | break; |
| 1282 | if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { |
| 1283 | ifp->if_flags |= IFF_OACTIVE; |
| 1284 | break; |
| 1285 | } |
| 1286 | IFQ_DEQUEUE(&ifp->if_snd, m0); |
| 1287 | if (m0->m_len < (int)sizeof(struct ether_header) && |
| 1288 | !(m0 = m_pullup(m0, sizeof(struct ether_header)))) |
| 1289 | continue; |
| 1290 | |
| 1291 | eh = mtod(m0, struct ether_header *); |
| 1292 | ni = ieee80211_find_txnode(ic, eh->ether_dhost); |
| 1293 | if (ni == NULL) { |
| 1294 | m_freem(m0); |
| 1295 | continue; |
| 1296 | } |
| 1297 | bpf_mtap(ifp, m0); |
| 1298 | m0 = ieee80211_encap(ic, m0, ni); |
| 1299 | if (m0 == NULL) { |
| 1300 | ieee80211_free_node(ni); |
| 1301 | continue; |
| 1302 | } |
| 1303 | bpf_mtap3(ic->ic_rawbpf, m0); |
| 1304 | if (rum_tx_data(sc, m0, ni) != 0) { |
| 1305 | ieee80211_free_node(ni); |
| 1306 | ifp->if_oerrors++; |
| 1307 | break; |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | sc->sc_tx_timer = 5; |
| 1312 | ifp->if_timer = 1; |
| 1313 | } |
| 1314 | } |
| 1315 | |
| 1316 | static void |
| 1317 | rum_watchdog(struct ifnet *ifp) |
| 1318 | { |
| 1319 | struct rum_softc *sc = ifp->if_softc; |
| 1320 | struct ieee80211com *ic = &sc->sc_ic; |
| 1321 | |
| 1322 | ifp->if_timer = 0; |
| 1323 | |
| 1324 | if (sc->sc_tx_timer > 0) { |
| 1325 | if (--sc->sc_tx_timer == 0) { |
| 1326 | printf("%s: device timeout\n" , device_xname(sc->sc_dev)); |
| 1327 | /*rum_init(ifp); XXX needs a process context! */ |
| 1328 | ifp->if_oerrors++; |
| 1329 | return; |
| 1330 | } |
| 1331 | ifp->if_timer = 1; |
| 1332 | } |
| 1333 | |
| 1334 | ieee80211_watchdog(ic); |
| 1335 | } |
| 1336 | |
| 1337 | static int |
| 1338 | rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) |
| 1339 | { |
| 1340 | #define IS_RUNNING(ifp) \ |
| 1341 | (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) |
| 1342 | |
| 1343 | struct rum_softc *sc = ifp->if_softc; |
| 1344 | struct ieee80211com *ic = &sc->sc_ic; |
| 1345 | int s, error = 0; |
| 1346 | |
| 1347 | s = splnet(); |
| 1348 | |
| 1349 | switch (cmd) { |
| 1350 | case SIOCSIFFLAGS: |
| 1351 | if ((error = ifioctl_common(ifp, cmd, data)) != 0) |
| 1352 | break; |
| 1353 | switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { |
| 1354 | case IFF_UP|IFF_RUNNING: |
| 1355 | rum_update_promisc(sc); |
| 1356 | break; |
| 1357 | case IFF_UP: |
| 1358 | rum_init(ifp); |
| 1359 | break; |
| 1360 | case IFF_RUNNING: |
| 1361 | rum_stop(ifp, 1); |
| 1362 | break; |
| 1363 | case 0: |
| 1364 | break; |
| 1365 | } |
| 1366 | break; |
| 1367 | |
| 1368 | case SIOCADDMULTI: |
| 1369 | case SIOCDELMULTI: |
| 1370 | if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { |
| 1371 | error = 0; |
| 1372 | } |
| 1373 | break; |
| 1374 | |
| 1375 | default: |
| 1376 | error = ieee80211_ioctl(ic, cmd, data); |
| 1377 | } |
| 1378 | |
| 1379 | if (error == ENETRESET) { |
| 1380 | if (IS_RUNNING(ifp) && |
| 1381 | (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) |
| 1382 | rum_init(ifp); |
| 1383 | error = 0; |
| 1384 | } |
| 1385 | |
| 1386 | splx(s); |
| 1387 | |
| 1388 | return error; |
| 1389 | #undef IS_RUNNING |
| 1390 | } |
| 1391 | |
| 1392 | static void |
| 1393 | rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) |
| 1394 | { |
| 1395 | usb_device_request_t req; |
| 1396 | usbd_status error; |
| 1397 | |
| 1398 | req.bmRequestType = UT_READ_VENDOR_DEVICE; |
| 1399 | req.bRequest = RT2573_READ_EEPROM; |
| 1400 | USETW(req.wValue, 0); |
| 1401 | USETW(req.wIndex, addr); |
| 1402 | USETW(req.wLength, len); |
| 1403 | |
| 1404 | error = usbd_do_request(sc->sc_udev, &req, buf); |
| 1405 | if (error != 0) { |
| 1406 | printf("%s: could not read EEPROM: %s\n" , |
| 1407 | device_xname(sc->sc_dev), usbd_errstr(error)); |
| 1408 | } |
| 1409 | } |
| 1410 | |
| 1411 | static uint32_t |
| 1412 | rum_read(struct rum_softc *sc, uint16_t reg) |
| 1413 | { |
| 1414 | uint32_t val; |
| 1415 | |
| 1416 | rum_read_multi(sc, reg, &val, sizeof(val)); |
| 1417 | |
| 1418 | return le32toh(val); |
| 1419 | } |
| 1420 | |
| 1421 | static void |
| 1422 | rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) |
| 1423 | { |
| 1424 | usb_device_request_t req; |
| 1425 | usbd_status error; |
| 1426 | |
| 1427 | req.bmRequestType = UT_READ_VENDOR_DEVICE; |
| 1428 | req.bRequest = RT2573_READ_MULTI_MAC; |
| 1429 | USETW(req.wValue, 0); |
| 1430 | USETW(req.wIndex, reg); |
| 1431 | USETW(req.wLength, len); |
| 1432 | |
| 1433 | error = usbd_do_request(sc->sc_udev, &req, buf); |
| 1434 | if (error != 0) { |
| 1435 | printf("%s: could not multi read MAC register: %s\n" , |
| 1436 | device_xname(sc->sc_dev), usbd_errstr(error)); |
| 1437 | } |
| 1438 | } |
| 1439 | |
| 1440 | static void |
| 1441 | rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) |
| 1442 | { |
| 1443 | uint32_t tmp = htole32(val); |
| 1444 | |
| 1445 | rum_write_multi(sc, reg, &tmp, sizeof(tmp)); |
| 1446 | } |
| 1447 | |
| 1448 | static void |
| 1449 | rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) |
| 1450 | { |
| 1451 | usb_device_request_t req; |
| 1452 | usbd_status error; |
| 1453 | int offset; |
| 1454 | |
| 1455 | req.bmRequestType = UT_WRITE_VENDOR_DEVICE; |
| 1456 | req.bRequest = RT2573_WRITE_MULTI_MAC; |
| 1457 | USETW(req.wValue, 0); |
| 1458 | |
| 1459 | /* write at most 64 bytes at a time */ |
| 1460 | for (offset = 0; offset < len; offset += 64) { |
| 1461 | USETW(req.wIndex, reg + offset); |
| 1462 | USETW(req.wLength, MIN(len - offset, 64)); |
| 1463 | |
| 1464 | error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); |
| 1465 | if (error != 0) { |
| 1466 | printf("%s: could not multi write MAC register: %s\n" , |
| 1467 | device_xname(sc->sc_dev), usbd_errstr(error)); |
| 1468 | } |
| 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | static void |
| 1473 | rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) |
| 1474 | { |
| 1475 | uint32_t tmp; |
| 1476 | int ntries; |
| 1477 | |
| 1478 | for (ntries = 0; ntries < 5; ntries++) { |
| 1479 | if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) |
| 1480 | break; |
| 1481 | } |
| 1482 | if (ntries == 5) { |
| 1483 | printf("%s: could not write to BBP\n" , device_xname(sc->sc_dev)); |
| 1484 | return; |
| 1485 | } |
| 1486 | |
| 1487 | tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; |
| 1488 | rum_write(sc, RT2573_PHY_CSR3, tmp); |
| 1489 | } |
| 1490 | |
| 1491 | static uint8_t |
| 1492 | rum_bbp_read(struct rum_softc *sc, uint8_t reg) |
| 1493 | { |
| 1494 | uint32_t val; |
| 1495 | int ntries; |
| 1496 | |
| 1497 | for (ntries = 0; ntries < 5; ntries++) { |
| 1498 | if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) |
| 1499 | break; |
| 1500 | } |
| 1501 | if (ntries == 5) { |
| 1502 | printf("%s: could not read BBP\n" , device_xname(sc->sc_dev)); |
| 1503 | return 0; |
| 1504 | } |
| 1505 | |
| 1506 | val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; |
| 1507 | rum_write(sc, RT2573_PHY_CSR3, val); |
| 1508 | |
| 1509 | for (ntries = 0; ntries < 100; ntries++) { |
| 1510 | val = rum_read(sc, RT2573_PHY_CSR3); |
| 1511 | if (!(val & RT2573_BBP_BUSY)) |
| 1512 | return val & 0xff; |
| 1513 | DELAY(1); |
| 1514 | } |
| 1515 | |
| 1516 | printf("%s: could not read BBP\n" , device_xname(sc->sc_dev)); |
| 1517 | return 0; |
| 1518 | } |
| 1519 | |
| 1520 | static void |
| 1521 | rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) |
| 1522 | { |
| 1523 | uint32_t tmp; |
| 1524 | int ntries; |
| 1525 | |
| 1526 | for (ntries = 0; ntries < 5; ntries++) { |
| 1527 | if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) |
| 1528 | break; |
| 1529 | } |
| 1530 | if (ntries == 5) { |
| 1531 | printf("%s: could not write to RF\n" , device_xname(sc->sc_dev)); |
| 1532 | return; |
| 1533 | } |
| 1534 | |
| 1535 | tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | |
| 1536 | (reg & 3); |
| 1537 | rum_write(sc, RT2573_PHY_CSR4, tmp); |
| 1538 | |
| 1539 | /* remember last written value in sc */ |
| 1540 | sc->rf_regs[reg] = val; |
| 1541 | |
| 1542 | DPRINTFN(15, ("RF R[%u] <- 0x%05x\n" , reg & 3, val & 0xfffff)); |
| 1543 | } |
| 1544 | |
| 1545 | static void |
| 1546 | rum_select_antenna(struct rum_softc *sc) |
| 1547 | { |
| 1548 | uint8_t bbp4, bbp77; |
| 1549 | uint32_t tmp; |
| 1550 | |
| 1551 | bbp4 = rum_bbp_read(sc, 4); |
| 1552 | bbp77 = rum_bbp_read(sc, 77); |
| 1553 | |
| 1554 | /* TBD */ |
| 1555 | |
| 1556 | /* make sure Rx is disabled before switching antenna */ |
| 1557 | tmp = rum_read(sc, RT2573_TXRX_CSR0); |
| 1558 | rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); |
| 1559 | |
| 1560 | rum_bbp_write(sc, 4, bbp4); |
| 1561 | rum_bbp_write(sc, 77, bbp77); |
| 1562 | |
| 1563 | rum_write(sc, RT2573_TXRX_CSR0, tmp); |
| 1564 | } |
| 1565 | |
| 1566 | /* |
| 1567 | * Enable multi-rate retries for frames sent at OFDM rates. |
| 1568 | * In 802.11b/g mode, allow fallback to CCK rates. |
| 1569 | */ |
| 1570 | static void |
| 1571 | rum_enable_mrr(struct rum_softc *sc) |
| 1572 | { |
| 1573 | struct ieee80211com *ic = &sc->sc_ic; |
| 1574 | uint32_t tmp; |
| 1575 | |
| 1576 | tmp = rum_read(sc, RT2573_TXRX_CSR4); |
| 1577 | |
| 1578 | tmp &= ~RT2573_MRR_CCK_FALLBACK; |
| 1579 | if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) |
| 1580 | tmp |= RT2573_MRR_CCK_FALLBACK; |
| 1581 | tmp |= RT2573_MRR_ENABLED; |
| 1582 | |
| 1583 | rum_write(sc, RT2573_TXRX_CSR4, tmp); |
| 1584 | } |
| 1585 | |
| 1586 | static void |
| 1587 | rum_set_txpreamble(struct rum_softc *sc) |
| 1588 | { |
| 1589 | uint32_t tmp; |
| 1590 | |
| 1591 | tmp = rum_read(sc, RT2573_TXRX_CSR4); |
| 1592 | |
| 1593 | tmp &= ~RT2573_SHORT_PREAMBLE; |
| 1594 | if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) |
| 1595 | tmp |= RT2573_SHORT_PREAMBLE; |
| 1596 | |
| 1597 | rum_write(sc, RT2573_TXRX_CSR4, tmp); |
| 1598 | } |
| 1599 | |
| 1600 | static void |
| 1601 | rum_set_basicrates(struct rum_softc *sc) |
| 1602 | { |
| 1603 | struct ieee80211com *ic = &sc->sc_ic; |
| 1604 | |
| 1605 | /* update basic rate set */ |
| 1606 | if (ic->ic_curmode == IEEE80211_MODE_11B) { |
| 1607 | /* 11b basic rates: 1, 2Mbps */ |
| 1608 | rum_write(sc, RT2573_TXRX_CSR5, 0x3); |
| 1609 | } else if (ic->ic_curmode == IEEE80211_MODE_11A) { |
| 1610 | /* 11a basic rates: 6, 12, 24Mbps */ |
| 1611 | rum_write(sc, RT2573_TXRX_CSR5, 0x150); |
| 1612 | } else { |
| 1613 | /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ |
| 1614 | rum_write(sc, RT2573_TXRX_CSR5, 0xf); |
| 1615 | } |
| 1616 | } |
| 1617 | |
| 1618 | /* |
| 1619 | * Reprogram MAC/BBP to switch to a new band. Values taken from the reference |
| 1620 | * driver. |
| 1621 | */ |
| 1622 | static void |
| 1623 | rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) |
| 1624 | { |
| 1625 | uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; |
| 1626 | uint32_t tmp; |
| 1627 | |
| 1628 | /* update all BBP registers that depend on the band */ |
| 1629 | bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; |
| 1630 | bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; |
| 1631 | if (IEEE80211_IS_CHAN_5GHZ(c)) { |
| 1632 | bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; |
| 1633 | bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; |
| 1634 | } |
| 1635 | if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || |
| 1636 | (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { |
| 1637 | bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; |
| 1638 | } |
| 1639 | |
| 1640 | sc->bbp17 = bbp17; |
| 1641 | rum_bbp_write(sc, 17, bbp17); |
| 1642 | rum_bbp_write(sc, 96, bbp96); |
| 1643 | rum_bbp_write(sc, 104, bbp104); |
| 1644 | |
| 1645 | if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || |
| 1646 | (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { |
| 1647 | rum_bbp_write(sc, 75, 0x80); |
| 1648 | rum_bbp_write(sc, 86, 0x80); |
| 1649 | rum_bbp_write(sc, 88, 0x80); |
| 1650 | } |
| 1651 | |
| 1652 | rum_bbp_write(sc, 35, bbp35); |
| 1653 | rum_bbp_write(sc, 97, bbp97); |
| 1654 | rum_bbp_write(sc, 98, bbp98); |
| 1655 | |
| 1656 | tmp = rum_read(sc, RT2573_PHY_CSR0); |
| 1657 | tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); |
| 1658 | if (IEEE80211_IS_CHAN_2GHZ(c)) |
| 1659 | tmp |= RT2573_PA_PE_2GHZ; |
| 1660 | else |
| 1661 | tmp |= RT2573_PA_PE_5GHZ; |
| 1662 | rum_write(sc, RT2573_PHY_CSR0, tmp); |
| 1663 | |
| 1664 | /* 802.11a uses a 16 microseconds short interframe space */ |
| 1665 | sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; |
| 1666 | } |
| 1667 | |
| 1668 | static void |
| 1669 | rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) |
| 1670 | { |
| 1671 | struct ieee80211com *ic = &sc->sc_ic; |
| 1672 | const struct rfprog *rfprog; |
| 1673 | uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; |
| 1674 | int8_t power; |
| 1675 | u_int i, chan; |
| 1676 | |
| 1677 | chan = ieee80211_chan2ieee(ic, c); |
| 1678 | if (chan == 0 || chan == IEEE80211_CHAN_ANY) |
| 1679 | return; |
| 1680 | |
| 1681 | /* select the appropriate RF settings based on what EEPROM says */ |
| 1682 | rfprog = (sc->rf_rev == RT2573_RF_5225 || |
| 1683 | sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; |
| 1684 | |
| 1685 | /* find the settings for this channel (we know it exists) */ |
| 1686 | for (i = 0; rfprog[i].chan != chan; i++); |
| 1687 | |
| 1688 | power = sc->txpow[i]; |
| 1689 | if (power < 0) { |
| 1690 | bbp94 += power; |
| 1691 | power = 0; |
| 1692 | } else if (power > 31) { |
| 1693 | bbp94 += power - 31; |
| 1694 | power = 31; |
| 1695 | } |
| 1696 | |
| 1697 | /* |
| 1698 | * If we are switching from the 2GHz band to the 5GHz band or |
| 1699 | * vice-versa, BBP registers need to be reprogrammed. |
| 1700 | */ |
| 1701 | if (c->ic_flags != ic->ic_curchan->ic_flags) { |
| 1702 | rum_select_band(sc, c); |
| 1703 | rum_select_antenna(sc); |
| 1704 | } |
| 1705 | ic->ic_curchan = c; |
| 1706 | |
| 1707 | rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); |
| 1708 | rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); |
| 1709 | rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); |
| 1710 | rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); |
| 1711 | |
| 1712 | rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); |
| 1713 | rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); |
| 1714 | rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); |
| 1715 | rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); |
| 1716 | |
| 1717 | rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); |
| 1718 | rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); |
| 1719 | rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); |
| 1720 | rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); |
| 1721 | |
| 1722 | DELAY(10); |
| 1723 | |
| 1724 | /* enable smart mode for MIMO-capable RFs */ |
| 1725 | bbp3 = rum_bbp_read(sc, 3); |
| 1726 | |
| 1727 | bbp3 &= ~RT2573_SMART_MODE; |
| 1728 | if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) |
| 1729 | bbp3 |= RT2573_SMART_MODE; |
| 1730 | |
| 1731 | rum_bbp_write(sc, 3, bbp3); |
| 1732 | |
| 1733 | if (bbp94 != RT2573_BBPR94_DEFAULT) |
| 1734 | rum_bbp_write(sc, 94, bbp94); |
| 1735 | } |
| 1736 | |
| 1737 | /* |
| 1738 | * Enable TSF synchronization and tell h/w to start sending beacons for IBSS |
| 1739 | * and HostAP operating modes. |
| 1740 | */ |
| 1741 | static void |
| 1742 | rum_enable_tsf_sync(struct rum_softc *sc) |
| 1743 | { |
| 1744 | struct ieee80211com *ic = &sc->sc_ic; |
| 1745 | uint32_t tmp; |
| 1746 | |
| 1747 | if (ic->ic_opmode != IEEE80211_M_STA) { |
| 1748 | /* |
| 1749 | * Change default 16ms TBTT adjustment to 8ms. |
| 1750 | * Must be done before enabling beacon generation. |
| 1751 | */ |
| 1752 | rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); |
| 1753 | } |
| 1754 | |
| 1755 | tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; |
| 1756 | |
| 1757 | /* set beacon interval (in 1/16ms unit) */ |
| 1758 | tmp |= ic->ic_bss->ni_intval * 16; |
| 1759 | |
| 1760 | tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; |
| 1761 | if (ic->ic_opmode == IEEE80211_M_STA) |
| 1762 | tmp |= RT2573_TSF_MODE(1); |
| 1763 | else |
| 1764 | tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; |
| 1765 | |
| 1766 | rum_write(sc, RT2573_TXRX_CSR9, tmp); |
| 1767 | } |
| 1768 | |
| 1769 | static void |
| 1770 | rum_update_slot(struct rum_softc *sc) |
| 1771 | { |
| 1772 | struct ieee80211com *ic = &sc->sc_ic; |
| 1773 | uint8_t slottime; |
| 1774 | uint32_t tmp; |
| 1775 | |
| 1776 | slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; |
| 1777 | |
| 1778 | tmp = rum_read(sc, RT2573_MAC_CSR9); |
| 1779 | tmp = (tmp & ~0xff) | slottime; |
| 1780 | rum_write(sc, RT2573_MAC_CSR9, tmp); |
| 1781 | |
| 1782 | DPRINTF(("setting slot time to %uus\n" , slottime)); |
| 1783 | } |
| 1784 | |
| 1785 | static void |
| 1786 | rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) |
| 1787 | { |
| 1788 | uint32_t tmp; |
| 1789 | |
| 1790 | tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; |
| 1791 | rum_write(sc, RT2573_MAC_CSR4, tmp); |
| 1792 | |
| 1793 | tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; |
| 1794 | rum_write(sc, RT2573_MAC_CSR5, tmp); |
| 1795 | } |
| 1796 | |
| 1797 | static void |
| 1798 | rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) |
| 1799 | { |
| 1800 | uint32_t tmp; |
| 1801 | |
| 1802 | tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; |
| 1803 | rum_write(sc, RT2573_MAC_CSR2, tmp); |
| 1804 | |
| 1805 | tmp = addr[4] | addr[5] << 8 | 0xff << 16; |
| 1806 | rum_write(sc, RT2573_MAC_CSR3, tmp); |
| 1807 | } |
| 1808 | |
| 1809 | static void |
| 1810 | rum_update_promisc(struct rum_softc *sc) |
| 1811 | { |
| 1812 | struct ifnet *ifp = sc->sc_ic.ic_ifp; |
| 1813 | uint32_t tmp; |
| 1814 | |
| 1815 | tmp = rum_read(sc, RT2573_TXRX_CSR0); |
| 1816 | |
| 1817 | tmp &= ~RT2573_DROP_NOT_TO_ME; |
| 1818 | if (!(ifp->if_flags & IFF_PROMISC)) |
| 1819 | tmp |= RT2573_DROP_NOT_TO_ME; |
| 1820 | |
| 1821 | rum_write(sc, RT2573_TXRX_CSR0, tmp); |
| 1822 | |
| 1823 | DPRINTF(("%s promiscuous mode\n" , (ifp->if_flags & IFF_PROMISC) ? |
| 1824 | "entering" : "leaving" )); |
| 1825 | } |
| 1826 | |
| 1827 | static const char * |
| 1828 | rum_get_rf(int rev) |
| 1829 | { |
| 1830 | switch (rev) { |
| 1831 | case RT2573_RF_2527: return "RT2527 (MIMO XR)" ; |
| 1832 | case RT2573_RF_2528: return "RT2528" ; |
| 1833 | case RT2573_RF_5225: return "RT5225 (MIMO XR)" ; |
| 1834 | case RT2573_RF_5226: return "RT5226" ; |
| 1835 | default: return "unknown" ; |
| 1836 | } |
| 1837 | } |
| 1838 | |
| 1839 | static void |
| 1840 | rum_read_eeprom(struct rum_softc *sc) |
| 1841 | { |
| 1842 | struct ieee80211com *ic = &sc->sc_ic; |
| 1843 | uint16_t val; |
| 1844 | #ifdef RUM_DEBUG |
| 1845 | int i; |
| 1846 | #endif |
| 1847 | |
| 1848 | /* read MAC/BBP type */ |
| 1849 | rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); |
| 1850 | sc->macbbp_rev = le16toh(val); |
| 1851 | |
| 1852 | /* read MAC address */ |
| 1853 | rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); |
| 1854 | |
| 1855 | rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); |
| 1856 | val = le16toh(val); |
| 1857 | sc->rf_rev = (val >> 11) & 0x1f; |
| 1858 | sc->hw_radio = (val >> 10) & 0x1; |
| 1859 | sc->rx_ant = (val >> 4) & 0x3; |
| 1860 | sc->tx_ant = (val >> 2) & 0x3; |
| 1861 | sc->nb_ant = val & 0x3; |
| 1862 | |
| 1863 | DPRINTF(("RF revision=%d\n" , sc->rf_rev)); |
| 1864 | |
| 1865 | rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); |
| 1866 | val = le16toh(val); |
| 1867 | sc->ext_5ghz_lna = (val >> 6) & 0x1; |
| 1868 | sc->ext_2ghz_lna = (val >> 4) & 0x1; |
| 1869 | |
| 1870 | DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n" , |
| 1871 | sc->ext_2ghz_lna, sc->ext_5ghz_lna)); |
| 1872 | |
| 1873 | rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); |
| 1874 | val = le16toh(val); |
| 1875 | if ((val & 0xff) != 0xff) |
| 1876 | sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ |
| 1877 | |
| 1878 | rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); |
| 1879 | val = le16toh(val); |
| 1880 | if ((val & 0xff) != 0xff) |
| 1881 | sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ |
| 1882 | |
| 1883 | DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n" , |
| 1884 | sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); |
| 1885 | |
| 1886 | rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); |
| 1887 | val = le16toh(val); |
| 1888 | if ((val & 0xff) != 0xff) |
| 1889 | sc->rffreq = val & 0xff; |
| 1890 | |
| 1891 | DPRINTF(("RF freq=%d\n" , sc->rffreq)); |
| 1892 | |
| 1893 | /* read Tx power for all a/b/g channels */ |
| 1894 | rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); |
| 1895 | /* XXX default Tx power for 802.11a channels */ |
| 1896 | memset(sc->txpow + 14, 24, sizeof(sc->txpow) - 14); |
| 1897 | #ifdef RUM_DEBUG |
| 1898 | for (i = 0; i < 14; i++) |
| 1899 | DPRINTF(("Channel=%d Tx power=%d\n" , i + 1, sc->txpow[i])); |
| 1900 | #endif |
| 1901 | |
| 1902 | /* read default values for BBP registers */ |
| 1903 | rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); |
| 1904 | #ifdef RUM_DEBUG |
| 1905 | for (i = 0; i < 14; i++) { |
| 1906 | if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) |
| 1907 | continue; |
| 1908 | DPRINTF(("BBP R%d=%02x\n" , sc->bbp_prom[i].reg, |
| 1909 | sc->bbp_prom[i].val)); |
| 1910 | } |
| 1911 | #endif |
| 1912 | } |
| 1913 | |
| 1914 | static int |
| 1915 | rum_bbp_init(struct rum_softc *sc) |
| 1916 | { |
| 1917 | unsigned int i, ntries; |
| 1918 | uint8_t val; |
| 1919 | |
| 1920 | /* wait for BBP to be ready */ |
| 1921 | for (ntries = 0; ntries < 100; ntries++) { |
| 1922 | val = rum_bbp_read(sc, 0); |
| 1923 | if (val != 0 && val != 0xff) |
| 1924 | break; |
| 1925 | DELAY(1000); |
| 1926 | } |
| 1927 | if (ntries == 100) { |
| 1928 | printf("%s: timeout waiting for BBP\n" , |
| 1929 | device_xname(sc->sc_dev)); |
| 1930 | return EIO; |
| 1931 | } |
| 1932 | |
| 1933 | /* initialize BBP registers to default values */ |
| 1934 | for (i = 0; i < __arraycount(rum_def_bbp); i++) |
| 1935 | rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); |
| 1936 | |
| 1937 | /* write vendor-specific BBP values (from EEPROM) */ |
| 1938 | for (i = 0; i < 16; i++) { |
| 1939 | if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) |
| 1940 | continue; |
| 1941 | rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); |
| 1942 | } |
| 1943 | |
| 1944 | return 0; |
| 1945 | } |
| 1946 | |
| 1947 | static int |
| 1948 | rum_init(struct ifnet *ifp) |
| 1949 | { |
| 1950 | struct rum_softc *sc = ifp->if_softc; |
| 1951 | struct ieee80211com *ic = &sc->sc_ic; |
| 1952 | uint32_t tmp; |
| 1953 | usbd_status error = 0; |
| 1954 | unsigned int i, ntries; |
| 1955 | |
| 1956 | if ((sc->sc_flags & RT2573_FWLOADED) == 0) { |
| 1957 | if (rum_attachhook(sc)) |
| 1958 | goto fail; |
| 1959 | } |
| 1960 | |
| 1961 | rum_stop(ifp, 0); |
| 1962 | |
| 1963 | /* initialize MAC registers to default values */ |
| 1964 | for (i = 0; i < __arraycount(rum_def_mac); i++) |
| 1965 | rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); |
| 1966 | |
| 1967 | /* set host ready */ |
| 1968 | rum_write(sc, RT2573_MAC_CSR1, 3); |
| 1969 | rum_write(sc, RT2573_MAC_CSR1, 0); |
| 1970 | |
| 1971 | /* wait for BBP/RF to wakeup */ |
| 1972 | for (ntries = 0; ntries < 1000; ntries++) { |
| 1973 | if (rum_read(sc, RT2573_MAC_CSR12) & 8) |
| 1974 | break; |
| 1975 | rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ |
| 1976 | DELAY(1000); |
| 1977 | } |
| 1978 | if (ntries == 1000) { |
| 1979 | printf("%s: timeout waiting for BBP/RF to wakeup\n" , |
| 1980 | device_xname(sc->sc_dev)); |
| 1981 | goto fail; |
| 1982 | } |
| 1983 | |
| 1984 | if ((error = rum_bbp_init(sc)) != 0) |
| 1985 | goto fail; |
| 1986 | |
| 1987 | /* select default channel */ |
| 1988 | rum_select_band(sc, ic->ic_curchan); |
| 1989 | rum_select_antenna(sc); |
| 1990 | rum_set_chan(sc, ic->ic_curchan); |
| 1991 | |
| 1992 | /* clear STA registers */ |
| 1993 | rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); |
| 1994 | |
| 1995 | IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); |
| 1996 | rum_set_macaddr(sc, ic->ic_myaddr); |
| 1997 | |
| 1998 | /* initialize ASIC */ |
| 1999 | rum_write(sc, RT2573_MAC_CSR1, 4); |
| 2000 | |
| 2001 | /* |
| 2002 | * Allocate xfer for AMRR statistics requests. |
| 2003 | */ |
| 2004 | struct usbd_pipe *pipe0 = usbd_get_pipe0(sc->sc_udev); |
| 2005 | error = usbd_create_xfer(pipe0, sizeof(sc->sta), 0, 0, |
| 2006 | &sc->amrr_xfer); |
| 2007 | if (error) { |
| 2008 | printf("%s: could not allocate AMRR xfer\n" , |
| 2009 | device_xname(sc->sc_dev)); |
| 2010 | goto fail; |
| 2011 | } |
| 2012 | |
| 2013 | /* |
| 2014 | * Open Tx and Rx USB bulk pipes. |
| 2015 | */ |
| 2016 | error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, |
| 2017 | &sc->sc_tx_pipeh); |
| 2018 | if (error != 0) { |
| 2019 | printf("%s: could not open Tx pipe: %s\n" , |
| 2020 | device_xname(sc->sc_dev), usbd_errstr(error)); |
| 2021 | goto fail; |
| 2022 | } |
| 2023 | |
| 2024 | error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, |
| 2025 | &sc->sc_rx_pipeh); |
| 2026 | if (error != 0) { |
| 2027 | printf("%s: could not open Rx pipe: %s\n" , |
| 2028 | device_xname(sc->sc_dev), usbd_errstr(error)); |
| 2029 | goto fail; |
| 2030 | } |
| 2031 | |
| 2032 | /* |
| 2033 | * Allocate Tx and Rx xfer queues. |
| 2034 | */ |
| 2035 | error = rum_alloc_tx_list(sc); |
| 2036 | if (error != 0) { |
| 2037 | printf("%s: could not allocate Tx list\n" , |
| 2038 | device_xname(sc->sc_dev)); |
| 2039 | goto fail; |
| 2040 | } |
| 2041 | |
| 2042 | error = rum_alloc_rx_list(sc); |
| 2043 | if (error != 0) { |
| 2044 | printf("%s: could not allocate Rx list\n" , |
| 2045 | device_xname(sc->sc_dev)); |
| 2046 | goto fail; |
| 2047 | } |
| 2048 | |
| 2049 | /* |
| 2050 | * Start up the receive pipe. |
| 2051 | */ |
| 2052 | for (i = 0; i < RUM_RX_LIST_COUNT; i++) { |
| 2053 | struct rum_rx_data *data; |
| 2054 | |
| 2055 | data = &sc->rx_data[i]; |
| 2056 | |
| 2057 | usbd_setup_xfer(data->xfer, data, data->buf, MCLBYTES, |
| 2058 | USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); |
| 2059 | error = usbd_transfer(data->xfer); |
| 2060 | if (error != USBD_NORMAL_COMPLETION && |
| 2061 | error != USBD_IN_PROGRESS) { |
| 2062 | printf("%s: could not queue Rx transfer\n" , |
| 2063 | device_xname(sc->sc_dev)); |
| 2064 | goto fail; |
| 2065 | } |
| 2066 | } |
| 2067 | |
| 2068 | /* update Rx filter */ |
| 2069 | tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; |
| 2070 | |
| 2071 | tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; |
| 2072 | if (ic->ic_opmode != IEEE80211_M_MONITOR) { |
| 2073 | tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | |
| 2074 | RT2573_DROP_ACKCTS; |
| 2075 | if (ic->ic_opmode != IEEE80211_M_HOSTAP) |
| 2076 | tmp |= RT2573_DROP_TODS; |
| 2077 | if (!(ifp->if_flags & IFF_PROMISC)) |
| 2078 | tmp |= RT2573_DROP_NOT_TO_ME; |
| 2079 | } |
| 2080 | rum_write(sc, RT2573_TXRX_CSR0, tmp); |
| 2081 | |
| 2082 | ifp->if_flags &= ~IFF_OACTIVE; |
| 2083 | ifp->if_flags |= IFF_RUNNING; |
| 2084 | |
| 2085 | if (ic->ic_opmode == IEEE80211_M_MONITOR) |
| 2086 | ieee80211_new_state(ic, IEEE80211_S_RUN, -1); |
| 2087 | else |
| 2088 | ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); |
| 2089 | |
| 2090 | return 0; |
| 2091 | |
| 2092 | fail: rum_stop(ifp, 1); |
| 2093 | return error; |
| 2094 | } |
| 2095 | |
| 2096 | static void |
| 2097 | rum_stop(struct ifnet *ifp, int disable) |
| 2098 | { |
| 2099 | struct rum_softc *sc = ifp->if_softc; |
| 2100 | struct ieee80211com *ic = &sc->sc_ic; |
| 2101 | uint32_t tmp; |
| 2102 | |
| 2103 | ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ |
| 2104 | |
| 2105 | sc->sc_tx_timer = 0; |
| 2106 | ifp->if_timer = 0; |
| 2107 | ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); |
| 2108 | |
| 2109 | /* disable Rx */ |
| 2110 | tmp = rum_read(sc, RT2573_TXRX_CSR0); |
| 2111 | rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); |
| 2112 | |
| 2113 | /* reset ASIC */ |
| 2114 | rum_write(sc, RT2573_MAC_CSR1, 3); |
| 2115 | rum_write(sc, RT2573_MAC_CSR1, 0); |
| 2116 | |
| 2117 | if (sc->amrr_xfer != NULL) { |
| 2118 | usbd_destroy_xfer(sc->amrr_xfer); |
| 2119 | sc->amrr_xfer = NULL; |
| 2120 | } |
| 2121 | |
| 2122 | if (sc->sc_rx_pipeh != NULL) { |
| 2123 | usbd_abort_pipe(sc->sc_rx_pipeh); |
| 2124 | } |
| 2125 | |
| 2126 | if (sc->sc_tx_pipeh != NULL) { |
| 2127 | usbd_abort_pipe(sc->sc_tx_pipeh); |
| 2128 | } |
| 2129 | |
| 2130 | rum_free_rx_list(sc); |
| 2131 | rum_free_tx_list(sc); |
| 2132 | |
| 2133 | if (sc->sc_rx_pipeh != NULL) { |
| 2134 | usbd_close_pipe(sc->sc_rx_pipeh); |
| 2135 | sc->sc_rx_pipeh = NULL; |
| 2136 | } |
| 2137 | |
| 2138 | if (sc->sc_tx_pipeh != NULL) { |
| 2139 | usbd_close_pipe(sc->sc_tx_pipeh); |
| 2140 | sc->sc_tx_pipeh = NULL; |
| 2141 | } |
| 2142 | } |
| 2143 | |
| 2144 | static int |
| 2145 | rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) |
| 2146 | { |
| 2147 | usb_device_request_t req; |
| 2148 | uint16_t reg = RT2573_MCU_CODE_BASE; |
| 2149 | usbd_status error; |
| 2150 | |
| 2151 | /* copy firmware image into NIC */ |
| 2152 | for (; size >= 4; reg += 4, ucode += 4, size -= 4) |
| 2153 | rum_write(sc, reg, UGETDW(ucode)); |
| 2154 | |
| 2155 | req.bmRequestType = UT_WRITE_VENDOR_DEVICE; |
| 2156 | req.bRequest = RT2573_MCU_CNTL; |
| 2157 | USETW(req.wValue, RT2573_MCU_RUN); |
| 2158 | USETW(req.wIndex, 0); |
| 2159 | USETW(req.wLength, 0); |
| 2160 | |
| 2161 | error = usbd_do_request(sc->sc_udev, &req, NULL); |
| 2162 | if (error != 0) { |
| 2163 | printf("%s: could not run firmware: %s\n" , |
| 2164 | device_xname(sc->sc_dev), usbd_errstr(error)); |
| 2165 | } |
| 2166 | return error; |
| 2167 | } |
| 2168 | |
| 2169 | static int |
| 2170 | rum_prepare_beacon(struct rum_softc *sc) |
| 2171 | { |
| 2172 | struct ieee80211com *ic = &sc->sc_ic; |
| 2173 | struct rum_tx_desc desc; |
| 2174 | struct mbuf *m0; |
| 2175 | int rate; |
| 2176 | |
| 2177 | m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); |
| 2178 | if (m0 == NULL) { |
| 2179 | aprint_error_dev(sc->sc_dev, |
| 2180 | "could not allocate beacon frame\n" ); |
| 2181 | return ENOBUFS; |
| 2182 | } |
| 2183 | |
| 2184 | /* send beacons at the lowest available rate */ |
| 2185 | rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; |
| 2186 | |
| 2187 | rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, |
| 2188 | m0->m_pkthdr.len, rate); |
| 2189 | |
| 2190 | /* copy the first 24 bytes of Tx descriptor into NIC memory */ |
| 2191 | rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); |
| 2192 | |
| 2193 | /* copy beacon header and payload into NIC memory */ |
| 2194 | rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), |
| 2195 | m0->m_pkthdr.len); |
| 2196 | |
| 2197 | m_freem(m0); |
| 2198 | |
| 2199 | return 0; |
| 2200 | } |
| 2201 | |
| 2202 | static void |
| 2203 | rum_newassoc(struct ieee80211_node *ni, int isnew) |
| 2204 | { |
| 2205 | /* start with lowest Tx rate */ |
| 2206 | ni->ni_txrate = 0; |
| 2207 | } |
| 2208 | |
| 2209 | static void |
| 2210 | rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) |
| 2211 | { |
| 2212 | int i; |
| 2213 | |
| 2214 | /* clear statistic registers (STA_CSR0 to STA_CSR5) */ |
| 2215 | rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); |
| 2216 | |
| 2217 | ieee80211_amrr_node_init(&sc->amrr, &sc->amn); |
| 2218 | |
| 2219 | /* set rate to some reasonable initial value */ |
| 2220 | for (i = ni->ni_rates.rs_nrates - 1; |
| 2221 | i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; |
| 2222 | i--); |
| 2223 | ni->ni_txrate = i; |
| 2224 | |
| 2225 | callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); |
| 2226 | } |
| 2227 | |
| 2228 | static void |
| 2229 | rum_amrr_timeout(void *arg) |
| 2230 | { |
| 2231 | struct rum_softc *sc = arg; |
| 2232 | usb_device_request_t req; |
| 2233 | |
| 2234 | /* |
| 2235 | * Asynchronously read statistic registers (cleared by read). |
| 2236 | */ |
| 2237 | req.bmRequestType = UT_READ_VENDOR_DEVICE; |
| 2238 | req.bRequest = RT2573_READ_MULTI_MAC; |
| 2239 | USETW(req.wValue, 0); |
| 2240 | USETW(req.wIndex, RT2573_STA_CSR0); |
| 2241 | USETW(req.wLength, sizeof(sc->sta)); |
| 2242 | |
| 2243 | usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, |
| 2244 | USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof(sc->sta), 0, |
| 2245 | rum_amrr_update); |
| 2246 | (void)usbd_transfer(sc->amrr_xfer); |
| 2247 | } |
| 2248 | |
| 2249 | static void |
| 2250 | rum_amrr_update(struct usbd_xfer *xfer, void *priv, |
| 2251 | usbd_status status) |
| 2252 | { |
| 2253 | struct rum_softc *sc = (struct rum_softc *)priv; |
| 2254 | struct ifnet *ifp = sc->sc_ic.ic_ifp; |
| 2255 | |
| 2256 | if (status != USBD_NORMAL_COMPLETION) { |
| 2257 | printf("%s: could not retrieve Tx statistics - cancelling " |
| 2258 | "automatic rate control\n" , device_xname(sc->sc_dev)); |
| 2259 | return; |
| 2260 | } |
| 2261 | |
| 2262 | /* count TX retry-fail as Tx errors */ |
| 2263 | ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; |
| 2264 | |
| 2265 | sc->amn.amn_retrycnt = |
| 2266 | (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ |
| 2267 | (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ |
| 2268 | (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ |
| 2269 | |
| 2270 | sc->amn.amn_txcnt = |
| 2271 | sc->amn.amn_retrycnt + |
| 2272 | (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ |
| 2273 | |
| 2274 | ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); |
| 2275 | |
| 2276 | callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); |
| 2277 | } |
| 2278 | |
| 2279 | static int |
| 2280 | rum_activate(device_t self, enum devact act) |
| 2281 | { |
| 2282 | switch (act) { |
| 2283 | case DVACT_DEACTIVATE: |
| 2284 | /*if_deactivate(&sc->sc_ic.ic_if);*/ |
| 2285 | return 0; |
| 2286 | default: |
| 2287 | return 0; |
| 2288 | } |
| 2289 | } |
| 2290 | |
| 2291 | MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf" ); |
| 2292 | |
| 2293 | #ifdef _MODULE |
| 2294 | #include "ioconf.c" |
| 2295 | #endif |
| 2296 | |
| 2297 | static int |
| 2298 | if_rum_modcmd(modcmd_t cmd, void *aux) |
| 2299 | { |
| 2300 | int error = 0; |
| 2301 | |
| 2302 | switch (cmd) { |
| 2303 | case MODULE_CMD_INIT: |
| 2304 | #ifdef _MODULE |
| 2305 | error = config_init_component(cfdriver_ioconf_rum, |
| 2306 | cfattach_ioconf_rum, cfdata_ioconf_rum); |
| 2307 | #endif |
| 2308 | return error; |
| 2309 | case MODULE_CMD_FINI: |
| 2310 | #ifdef _MODULE |
| 2311 | error = config_fini_component(cfdriver_ioconf_rum, |
| 2312 | cfattach_ioconf_rum, cfdata_ioconf_rum); |
| 2313 | #endif |
| 2314 | return error; |
| 2315 | default: |
| 2316 | return ENOTTY; |
| 2317 | } |
| 2318 | } |
| 2319 | |