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 | |