1 /* $FreeBSD: head/sys/dev/usb/wlan/if_rum.c 298895 2016-05-01 18:53:12Z avos $ */
2
3 /*-
4 * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org>
6 * Copyright (c) 2007-2008 Hans Petter Selasky <hselasky@FreeBSD.org>
7 * Copyright (c) 2015 Andriy Voskoboinyk <avos@FreeBSD.org>
8 *
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 */
21
22 /*-
23 * Ralink Technology RT2501USB/RT2601USB chipset driver
24 * http://www.ralinktech.com.tw/
25 */
26
27 #include <sys/param.h>
28 #include <sys/sockio.h>
29 #include <sys/sysctl.h>
30 #include <sys/lock.h>
31 #include <sys/mbuf.h>
32 #include <sys/kernel.h>
33 #include <sys/socket.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <sys/bus.h>
38 #include <sys/endian.h>
39
40 #include <sys/rman.h>
41
42 #include <net/bpf.h>
43 #include <net/if.h>
44 #include <net/if_var.h>
45 #include <net/if_arp.h>
46 #include <net/ethernet.h>
47 #include <net/if_dl.h>
48 #include <net/if_media.h>
49 #include <net/if_types.h>
50
51 #include <netproto/802_11/ieee80211_var.h>
52 #include <netproto/802_11/ieee80211_regdomain.h>
53 #include <netproto/802_11/ieee80211_radiotap.h>
54 #include <netproto/802_11/ieee80211_ratectl.h>
55
56 #include <bus/u4b/usb.h>
57 #include <bus/u4b/usbdi.h>
58 #include "usbdevs.h"
59
60 #define USB_DEBUG_VAR rum_debug
61 #include <bus/u4b/usb_debug.h>
62
63 #include <bus/u4b/wlan/if_rumreg.h>
64 #include <bus/u4b/wlan/if_rumvar.h>
65 #include <bus/u4b/wlan/if_rumfw.h>
66
67 #ifdef USB_DEBUG
68 static int rum_debug = 0;
69
70 static SYSCTL_NODE(_hw_usb, OID_AUTO, rum, CTLFLAG_RW, 0, "USB rum");
71 SYSCTL_INT(_hw_usb_rum, OID_AUTO, debug, CTLFLAG_RW, &rum_debug, 0,
72 "Debug level");
73 #endif
74
75 static const STRUCT_USB_HOST_ID rum_devs[] = {
76 #define RUM_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
77 RUM_DEV(ABOCOM, HWU54DM),
78 RUM_DEV(ABOCOM, RT2573_2),
79 RUM_DEV(ABOCOM, RT2573_3),
80 RUM_DEV(ABOCOM, RT2573_4),
81 RUM_DEV(ABOCOM, WUG2700),
82 RUM_DEV(AMIT, CGWLUSB2GO),
83 RUM_DEV(ASUS, RT2573_1),
84 RUM_DEV(ASUS, RT2573_2),
85 RUM_DEV(BELKIN, F5D7050A),
86 RUM_DEV(BELKIN, F5D9050V3),
87 RUM_DEV(CISCOLINKSYS, WUSB54GC),
88 RUM_DEV(CISCOLINKSYS, WUSB54GR),
89 RUM_DEV(CONCEPTRONIC2, C54RU2),
90 RUM_DEV(COREGA, CGWLUSB2GL),
91 RUM_DEV(COREGA, CGWLUSB2GPX),
92 RUM_DEV(DICKSMITH, CWD854F),
93 RUM_DEV(DICKSMITH, RT2573),
94 RUM_DEV(EDIMAX, EW7318USG),
95 RUM_DEV(DLINK2, DWLG122C1),
96 RUM_DEV(DLINK2, WUA1340),
97 RUM_DEV(DLINK2, DWA111),
98 RUM_DEV(DLINK2, DWA110),
99 RUM_DEV(GIGABYTE, GNWB01GS),
100 RUM_DEV(GIGABYTE, GNWI05GS),
101 RUM_DEV(GIGASET, RT2573),
102 RUM_DEV(GOODWAY, RT2573),
103 RUM_DEV(GUILLEMOT, HWGUSB254LB),
104 RUM_DEV(GUILLEMOT, HWGUSB254V2AP),
105 RUM_DEV(HUAWEI3COM, WUB320G),
106 RUM_DEV(MELCO, G54HP),
107 RUM_DEV(MELCO, SG54HP),
108 RUM_DEV(MELCO, SG54HG),
109 RUM_DEV(MELCO, WLIUCG),
110 RUM_DEV(MELCO, WLRUCG),
111 RUM_DEV(MELCO, WLRUCGAOSS),
112 RUM_DEV(MSI, RT2573_1),
113 RUM_DEV(MSI, RT2573_2),
114 RUM_DEV(MSI, RT2573_3),
115 RUM_DEV(MSI, RT2573_4),
116 RUM_DEV(NOVATECH, RT2573),
117 RUM_DEV(PLANEX2, GWUS54HP),
118 RUM_DEV(PLANEX2, GWUS54MINI2),
119 RUM_DEV(PLANEX2, GWUSMM),
120 RUM_DEV(QCOM, RT2573),
121 RUM_DEV(QCOM, RT2573_2),
122 RUM_DEV(QCOM, RT2573_3),
123 RUM_DEV(RALINK, RT2573),
124 RUM_DEV(RALINK, RT2573_2),
125 RUM_DEV(RALINK, RT2671),
126 RUM_DEV(SITECOMEU, WL113R2),
127 RUM_DEV(SITECOMEU, WL172),
128 RUM_DEV(SPARKLAN, RT2573),
129 RUM_DEV(SURECOM, RT2573),
130 #undef RUM_DEV
131 };
132
133 static device_probe_t rum_match;
134 static device_attach_t rum_attach;
135 static device_detach_t rum_detach;
136
137 static usb_callback_t rum_bulk_read_callback;
138 static usb_callback_t rum_bulk_write_callback;
139
140 static usb_error_t rum_do_request(struct rum_softc *sc,
141 struct usb_device_request *req, void *data);
142 static usb_error_t rum_do_mcu_request(struct rum_softc *sc, int);
143 static struct ieee80211vap *rum_vap_create(struct ieee80211com *,
144 const char [IFNAMSIZ], int, enum ieee80211_opmode,
145 int, const uint8_t [IEEE80211_ADDR_LEN],
146 const uint8_t [IEEE80211_ADDR_LEN]);
147 static void rum_vap_delete(struct ieee80211vap *);
148 static void rum_cmdq_cb(void *, int);
149 static int rum_cmd_sleepable(struct rum_softc *, const void *,
150 size_t, uint8_t, CMD_FUNC_PROTO);
151 static void rum_tx_free(struct rum_tx_data *, int);
152 static void rum_setup_tx_list(struct rum_softc *);
153 static void rum_unsetup_tx_list(struct rum_softc *);
154 static void rum_beacon_miss(struct ieee80211vap *);
155 static void rum_sta_recv_mgmt(struct ieee80211_node *,
156 struct mbuf *, int,
157 const struct ieee80211_rx_stats *, int, int);
158 static int rum_set_power_state(struct rum_softc *, int);
159 static int rum_newstate(struct ieee80211vap *,
160 enum ieee80211_state, int);
161 static uint8_t rum_crypto_mode(struct rum_softc *, u_int, int);
162 static void rum_setup_tx_desc(struct rum_softc *,
163 struct rum_tx_desc *, struct ieee80211_key *,
164 uint32_t, uint8_t, uint8_t, int, int, int);
165 static uint32_t rum_tx_crypto_flags(struct rum_softc *,
166 struct ieee80211_node *,
167 const struct ieee80211_key *);
168 static int rum_tx_mgt(struct rum_softc *, struct mbuf *,
169 struct ieee80211_node *);
170 static int rum_tx_raw(struct rum_softc *, struct mbuf *,
171 struct ieee80211_node *,
172 const struct ieee80211_bpf_params *);
173 static int rum_tx_data(struct rum_softc *, struct mbuf *,
174 struct ieee80211_node *);
175 static int rum_transmit(struct ieee80211com *, struct mbuf *);
176 static void rum_start(struct rum_softc *);
177 static void rum_parent(struct ieee80211com *);
178 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *,
179 int);
180 static uint32_t rum_read(struct rum_softc *, uint16_t);
181 static void rum_read_multi(struct rum_softc *, uint16_t, void *,
182 int);
183 static usb_error_t rum_write(struct rum_softc *, uint16_t, uint32_t);
184 static usb_error_t rum_write_multi(struct rum_softc *, uint16_t, void *,
185 size_t);
186 static usb_error_t rum_setbits(struct rum_softc *, uint16_t, uint32_t);
187 static usb_error_t rum_clrbits(struct rum_softc *, uint16_t, uint32_t);
188 static usb_error_t rum_modbits(struct rum_softc *, uint16_t, uint32_t,
189 uint32_t);
190 static int rum_bbp_busy(struct rum_softc *);
191 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t);
192 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t);
193 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t);
194 static void rum_select_antenna(struct rum_softc *);
195 static void rum_enable_mrr(struct rum_softc *);
196 static void rum_set_txpreamble(struct rum_softc *);
197 static void rum_set_basicrates(struct rum_softc *);
198 static void rum_select_band(struct rum_softc *,
199 struct ieee80211_channel *);
200 static void rum_set_chan(struct rum_softc *,
201 struct ieee80211_channel *);
202 static void rum_set_maxretry(struct rum_softc *,
203 struct ieee80211vap *);
204 static int rum_enable_tsf_sync(struct rum_softc *);
205 static void rum_enable_tsf(struct rum_softc *);
206 static void rum_abort_tsf_sync(struct rum_softc *);
207 static void rum_get_tsf(struct rum_softc *, uint64_t *);
208 static void rum_update_slot_cb(struct rum_softc *,
209 union sec_param *, uint8_t);
210 static void rum_update_slot(struct ieee80211com *);
211 static int rum_wme_update(struct ieee80211com *);
212 static void rum_set_bssid(struct rum_softc *, const uint8_t *);
213 static void rum_set_macaddr(struct rum_softc *, const uint8_t *);
214 static void rum_update_mcast(struct ieee80211com *);
215 static void rum_update_promisc(struct ieee80211com *);
216 static void rum_setpromisc(struct rum_softc *);
217 static const char *rum_get_rf(int);
218 static void rum_read_eeprom(struct rum_softc *);
219 static int rum_bbp_wakeup(struct rum_softc *);
220 static int rum_bbp_init(struct rum_softc *);
221 static void rum_clr_shkey_regs(struct rum_softc *);
222 static int rum_init(struct rum_softc *);
223 static void rum_stop(struct rum_softc *);
224 static void rum_load_microcode(struct rum_softc *, const uint8_t *,
225 size_t);
226 static int rum_set_sleep_time(struct rum_softc *, uint16_t);
227 static int rum_reset(struct ieee80211vap *, u_long);
228 static int rum_set_beacon(struct rum_softc *,
229 struct ieee80211vap *);
230 static int rum_alloc_beacon(struct rum_softc *,
231 struct ieee80211vap *);
232 static void rum_update_beacon_cb(struct rum_softc *,
233 union sec_param *, uint8_t);
234 static void rum_update_beacon(struct ieee80211vap *, int);
235 static int rum_common_key_set(struct rum_softc *,
236 struct ieee80211_key *, uint16_t);
237 static void rum_group_key_set_cb(struct rum_softc *,
238 union sec_param *, uint8_t);
239 static void rum_group_key_del_cb(struct rum_softc *,
240 union sec_param *, uint8_t);
241 static void rum_pair_key_set_cb(struct rum_softc *,
242 union sec_param *, uint8_t);
243 static void rum_pair_key_del_cb(struct rum_softc *,
244 union sec_param *, uint8_t);
245 static int rum_key_alloc(struct ieee80211vap *,
246 struct ieee80211_key *, ieee80211_keyix *,
247 ieee80211_keyix *);
248 static int rum_key_set(struct ieee80211vap *,
249 const struct ieee80211_key *);
250 static int rum_key_delete(struct ieee80211vap *,
251 const struct ieee80211_key *);
252 static int rum_raw_xmit(struct ieee80211_node *, struct mbuf *,
253 const struct ieee80211_bpf_params *);
254 static void rum_scan_start(struct ieee80211com *);
255 static void rum_scan_end(struct ieee80211com *);
256 static void rum_set_channel(struct ieee80211com *);
257 static void rum_getradiocaps(struct ieee80211com *, int, int *,
258 struct ieee80211_channel[]);
259 static int rum_get_rssi(struct rum_softc *, uint8_t);
260 static void rum_ratectl_start(struct rum_softc *,
261 struct ieee80211_node *);
262 static void rum_ratectl_timeout(void *);
263 static void rum_ratectl_task(void *, int);
264 static int rum_pause(struct rum_softc *, int);
265
266 static const struct {
267 uint32_t reg;
268 uint32_t val;
269 } rum_def_mac[] = {
270 { RT2573_TXRX_CSR0, 0x025fb032 },
271 { RT2573_TXRX_CSR1, 0x9eaa9eaf },
272 { RT2573_TXRX_CSR2, 0x8a8b8c8d },
273 { RT2573_TXRX_CSR3, 0x00858687 },
274 { RT2573_TXRX_CSR7, 0x2e31353b },
275 { RT2573_TXRX_CSR8, 0x2a2a2a2c },
276 { RT2573_TXRX_CSR15, 0x0000000f },
277 { RT2573_MAC_CSR6, 0x00000fff },
278 { RT2573_MAC_CSR8, 0x016c030a },
279 { RT2573_MAC_CSR10, 0x00000718 },
280 { RT2573_MAC_CSR12, 0x00000004 },
281 { RT2573_MAC_CSR13, 0x00007f00 },
282 { RT2573_SEC_CSR2, 0x00000000 },
283 { RT2573_SEC_CSR3, 0x00000000 },
284 { RT2573_SEC_CSR4, 0x00000000 },
285 { RT2573_PHY_CSR1, 0x000023b0 },
286 { RT2573_PHY_CSR5, 0x00040a06 },
287 { RT2573_PHY_CSR6, 0x00080606 },
288 { RT2573_PHY_CSR7, 0x00000408 },
289 { RT2573_AIFSN_CSR, 0x00002273 },
290 { RT2573_CWMIN_CSR, 0x00002344 },
291 { RT2573_CWMAX_CSR, 0x000034aa }
292 };
293
294 static const struct {
295 uint8_t reg;
296 uint8_t val;
297 } rum_def_bbp[] = {
298 { 3, 0x80 },
299 { 15, 0x30 },
300 { 17, 0x20 },
301 { 21, 0xc8 },
302 { 22, 0x38 },
303 { 23, 0x06 },
304 { 24, 0xfe },
305 { 25, 0x0a },
306 { 26, 0x0d },
307 { 32, 0x0b },
308 { 34, 0x12 },
309 { 37, 0x07 },
310 { 39, 0xf8 },
311 { 41, 0x60 },
312 { 53, 0x10 },
313 { 54, 0x18 },
314 { 60, 0x10 },
315 { 61, 0x04 },
316 { 62, 0x04 },
317 { 75, 0xfe },
318 { 86, 0xfe },
319 { 88, 0xfe },
320 { 90, 0x0f },
321 { 99, 0x00 },
322 { 102, 0x16 },
323 { 107, 0x04 }
324 };
325
326 static const uint8_t rum_chan_2ghz[] =
327 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 };
328
329 static const uint8_t rum_chan_5ghz[] =
330 { 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64,
331 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140,
332 149, 153, 157, 161, 165 };
333
334 static const struct rfprog {
335 uint8_t chan;
336 uint32_t r1, r2, r3, r4;
337 } rum_rf5226[] = {
338 { 1, 0x00b03, 0x001e1, 0x1a014, 0x30282 },
339 { 2, 0x00b03, 0x001e1, 0x1a014, 0x30287 },
340 { 3, 0x00b03, 0x001e2, 0x1a014, 0x30282 },
341 { 4, 0x00b03, 0x001e2, 0x1a014, 0x30287 },
342 { 5, 0x00b03, 0x001e3, 0x1a014, 0x30282 },
343 { 6, 0x00b03, 0x001e3, 0x1a014, 0x30287 },
344 { 7, 0x00b03, 0x001e4, 0x1a014, 0x30282 },
345 { 8, 0x00b03, 0x001e4, 0x1a014, 0x30287 },
346 { 9, 0x00b03, 0x001e5, 0x1a014, 0x30282 },
347 { 10, 0x00b03, 0x001e5, 0x1a014, 0x30287 },
348 { 11, 0x00b03, 0x001e6, 0x1a014, 0x30282 },
349 { 12, 0x00b03, 0x001e6, 0x1a014, 0x30287 },
350 { 13, 0x00b03, 0x001e7, 0x1a014, 0x30282 },
351 { 14, 0x00b03, 0x001e8, 0x1a014, 0x30284 },
352
353 { 34, 0x00b03, 0x20266, 0x36014, 0x30282 },
354 { 38, 0x00b03, 0x20267, 0x36014, 0x30284 },
355 { 42, 0x00b03, 0x20268, 0x36014, 0x30286 },
356 { 46, 0x00b03, 0x20269, 0x36014, 0x30288 },
357
358 { 36, 0x00b03, 0x00266, 0x26014, 0x30288 },
359 { 40, 0x00b03, 0x00268, 0x26014, 0x30280 },
360 { 44, 0x00b03, 0x00269, 0x26014, 0x30282 },
361 { 48, 0x00b03, 0x0026a, 0x26014, 0x30284 },
362 { 52, 0x00b03, 0x0026b, 0x26014, 0x30286 },
363 { 56, 0x00b03, 0x0026c, 0x26014, 0x30288 },
364 { 60, 0x00b03, 0x0026e, 0x26014, 0x30280 },
365 { 64, 0x00b03, 0x0026f, 0x26014, 0x30282 },
366
367 { 100, 0x00b03, 0x0028a, 0x2e014, 0x30280 },
368 { 104, 0x00b03, 0x0028b, 0x2e014, 0x30282 },
369 { 108, 0x00b03, 0x0028c, 0x2e014, 0x30284 },
370 { 112, 0x00b03, 0x0028d, 0x2e014, 0x30286 },
371 { 116, 0x00b03, 0x0028e, 0x2e014, 0x30288 },
372 { 120, 0x00b03, 0x002a0, 0x2e014, 0x30280 },
373 { 124, 0x00b03, 0x002a1, 0x2e014, 0x30282 },
374 { 128, 0x00b03, 0x002a2, 0x2e014, 0x30284 },
375 { 132, 0x00b03, 0x002a3, 0x2e014, 0x30286 },
376 { 136, 0x00b03, 0x002a4, 0x2e014, 0x30288 },
377 { 140, 0x00b03, 0x002a6, 0x2e014, 0x30280 },
378
379 { 149, 0x00b03, 0x002a8, 0x2e014, 0x30287 },
380 { 153, 0x00b03, 0x002a9, 0x2e014, 0x30289 },
381 { 157, 0x00b03, 0x002ab, 0x2e014, 0x30281 },
382 { 161, 0x00b03, 0x002ac, 0x2e014, 0x30283 },
383 { 165, 0x00b03, 0x002ad, 0x2e014, 0x30285 }
384 }, rum_rf5225[] = {
385 { 1, 0x00b33, 0x011e1, 0x1a014, 0x30282 },
386 { 2, 0x00b33, 0x011e1, 0x1a014, 0x30287 },
387 { 3, 0x00b33, 0x011e2, 0x1a014, 0x30282 },
388 { 4, 0x00b33, 0x011e2, 0x1a014, 0x30287 },
389 { 5, 0x00b33, 0x011e3, 0x1a014, 0x30282 },
390 { 6, 0x00b33, 0x011e3, 0x1a014, 0x30287 },
391 { 7, 0x00b33, 0x011e4, 0x1a014, 0x30282 },
392 { 8, 0x00b33, 0x011e4, 0x1a014, 0x30287 },
393 { 9, 0x00b33, 0x011e5, 0x1a014, 0x30282 },
394 { 10, 0x00b33, 0x011e5, 0x1a014, 0x30287 },
395 { 11, 0x00b33, 0x011e6, 0x1a014, 0x30282 },
396 { 12, 0x00b33, 0x011e6, 0x1a014, 0x30287 },
397 { 13, 0x00b33, 0x011e7, 0x1a014, 0x30282 },
398 { 14, 0x00b33, 0x011e8, 0x1a014, 0x30284 },
399
400 { 34, 0x00b33, 0x01266, 0x26014, 0x30282 },
401 { 38, 0x00b33, 0x01267, 0x26014, 0x30284 },
402 { 42, 0x00b33, 0x01268, 0x26014, 0x30286 },
403 { 46, 0x00b33, 0x01269, 0x26014, 0x30288 },
404
405 { 36, 0x00b33, 0x01266, 0x26014, 0x30288 },
406 { 40, 0x00b33, 0x01268, 0x26014, 0x30280 },
407 { 44, 0x00b33, 0x01269, 0x26014, 0x30282 },
408 { 48, 0x00b33, 0x0126a, 0x26014, 0x30284 },
409 { 52, 0x00b33, 0x0126b, 0x26014, 0x30286 },
410 { 56, 0x00b33, 0x0126c, 0x26014, 0x30288 },
411 { 60, 0x00b33, 0x0126e, 0x26014, 0x30280 },
412 { 64, 0x00b33, 0x0126f, 0x26014, 0x30282 },
413
414 { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 },
415 { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 },
416 { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 },
417 { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 },
418 { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 },
419 { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 },
420 { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 },
421 { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 },
422 { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 },
423 { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 },
424 { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 },
425
426 { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 },
427 { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 },
428 { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 },
429 { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 },
430 { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 }
431 };
432
433 static const struct usb_config rum_config[RUM_N_TRANSFER] = {
434 [RUM_BULK_WR] = {
435 .type = UE_BULK,
436 .endpoint = UE_ADDR_ANY,
437 .direction = UE_DIR_OUT,
438 .bufsize = (MCLBYTES + RT2573_TX_DESC_SIZE + 8),
439 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
440 .callback = rum_bulk_write_callback,
441 .timeout = 5000, /* ms */
442 },
443 [RUM_BULK_RD] = {
444 .type = UE_BULK,
445 .endpoint = UE_ADDR_ANY,
446 .direction = UE_DIR_IN,
447 .bufsize = (MCLBYTES + RT2573_RX_DESC_SIZE),
448 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
449 .callback = rum_bulk_read_callback,
450 },
451 };
452
453 static int
rum_match(device_t self)454 rum_match(device_t self)
455 {
456 struct usb_attach_arg *uaa = device_get_ivars(self);
457
458 if (uaa->usb_mode != USB_MODE_HOST)
459 return (ENXIO);
460 if (uaa->info.bConfigIndex != 0)
461 return (ENXIO);
462 if (uaa->info.bIfaceIndex != RT2573_IFACE_INDEX)
463 return (ENXIO);
464
465 return (usbd_lookup_id_by_uaa(rum_devs, sizeof(rum_devs), uaa));
466 }
467
468 static int
rum_attach(device_t self)469 rum_attach(device_t self)
470 {
471 struct usb_attach_arg *uaa = device_get_ivars(self);
472 struct rum_softc *sc = device_get_softc(self);
473 struct ieee80211com *ic = &sc->sc_ic;
474 uint32_t tmp;
475 uint8_t iface_index;
476 int error, ntries;
477
478 wlan_serialize_enter();
479 device_set_usb_desc(self);
480 sc->sc_udev = uaa->device;
481 sc->sc_dev = self;
482
483 RUM_LOCK_INIT(sc);
484 RUM_CMDQ_LOCK_INIT(sc);
485 mbufq_init(&sc->sc_snd, ifqmaxlen);
486
487 iface_index = RT2573_IFACE_INDEX;
488 error = usbd_transfer_setup(uaa->device, &iface_index,
489 sc->sc_xfer, rum_config, RUM_N_TRANSFER, sc, &sc->sc_lock);
490 if (error) {
491 device_printf(self, "could not allocate USB transfers, "
492 "err=%s\n", usbd_errstr(error));
493 goto detach;
494 }
495
496 RUM_LOCK(sc);
497 /* retrieve RT2573 rev. no */
498 for (ntries = 0; ntries < 100; ntries++) {
499 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0)
500 break;
501 if (rum_pause(sc, hz / 100))
502 break;
503 }
504 if (ntries == 100) {
505 device_printf(sc->sc_dev, "timeout waiting for chip to settle\n");
506 RUM_UNLOCK(sc);
507 goto detach;
508 }
509
510 /* retrieve MAC address and various other things from EEPROM */
511 rum_read_eeprom(sc);
512
513 device_printf(sc->sc_dev, "MAC/BBP RT2573 (rev 0x%05x), RF %s\n",
514 tmp, rum_get_rf(sc->rf_rev));
515
516 rum_load_microcode(sc, rt2573_ucode, sizeof(rt2573_ucode));
517 RUM_UNLOCK(sc);
518
519 ic->ic_softc = sc;
520 ic->ic_name = device_get_nameunit(self);
521 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
522
523 /* set device capabilities */
524 ic->ic_caps =
525 IEEE80211_C_STA /* station mode supported */
526 | IEEE80211_C_IBSS /* IBSS mode supported */
527 | IEEE80211_C_MONITOR /* monitor mode supported */
528 | IEEE80211_C_HOSTAP /* HostAp mode supported */
529 | IEEE80211_C_AHDEMO /* adhoc demo mode */
530 | IEEE80211_C_TXPMGT /* tx power management */
531 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
532 | IEEE80211_C_SHSLOT /* short slot time supported */
533 | IEEE80211_C_BGSCAN /* bg scanning supported */
534 | IEEE80211_C_WPA /* 802.11i */
535 | IEEE80211_C_WME /* 802.11e */
536 | IEEE80211_C_PMGT /* Station-side power mgmt */
537 | IEEE80211_C_SWSLEEP /* net80211 managed power mgmt */
538 ;
539
540 ic->ic_cryptocaps =
541 IEEE80211_CRYPTO_WEP |
542 IEEE80211_CRYPTO_AES_CCM |
543 IEEE80211_CRYPTO_TKIPMIC |
544 IEEE80211_CRYPTO_TKIP;
545
546 rum_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
547 ic->ic_channels);
548
549 ieee80211_ifattach(ic);
550 ic->ic_update_promisc = rum_update_promisc;
551 ic->ic_raw_xmit = rum_raw_xmit;
552 ic->ic_scan_start = rum_scan_start;
553 ic->ic_scan_end = rum_scan_end;
554 ic->ic_set_channel = rum_set_channel;
555 ic->ic_getradiocaps = rum_getradiocaps;
556 ic->ic_transmit = rum_transmit;
557 ic->ic_parent = rum_parent;
558 ic->ic_vap_create = rum_vap_create;
559 ic->ic_vap_delete = rum_vap_delete;
560 ic->ic_updateslot = rum_update_slot;
561 ic->ic_wme.wme_update = rum_wme_update;
562 ic->ic_update_mcast = rum_update_mcast;
563
564 ieee80211_radiotap_attach(ic,
565 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
566 RT2573_TX_RADIOTAP_PRESENT,
567 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
568 RT2573_RX_RADIOTAP_PRESENT);
569
570 TASK_INIT(&sc->cmdq_task, 0, rum_cmdq_cb, sc);
571
572 if (bootverbose)
573 ieee80211_announce(ic);
574
575 wlan_serialize_exit();
576 return (0);
577
578 detach:
579 wlan_serialize_exit();
580 rum_detach(self);
581 return (ENXIO); /* failure */
582 }
583
584 static int
rum_detach(device_t self)585 rum_detach(device_t self)
586 {
587 struct rum_softc *sc = device_get_softc(self);
588 struct ieee80211com *ic = &sc->sc_ic;
589
590 /* Prevent further ioctls */
591 RUM_LOCK(sc);
592 sc->sc_detached = 1;
593 RUM_UNLOCK(sc);
594
595 /* stop all USB transfers */
596 usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER);
597
598 /* free TX list, if any */
599 RUM_LOCK(sc);
600 rum_unsetup_tx_list(sc);
601 RUM_UNLOCK(sc);
602
603 if (ic->ic_softc == sc) {
604 ieee80211_draintask(ic, &sc->cmdq_task);
605 ieee80211_ifdetach(ic);
606 }
607
608 mbufq_drain(&sc->sc_snd);
609 RUM_CMDQ_LOCK_DESTROY(sc);
610 RUM_LOCK_DESTROY(sc);
611
612 return (0);
613 }
614
615 static usb_error_t
rum_do_request(struct rum_softc * sc,struct usb_device_request * req,void * data)616 rum_do_request(struct rum_softc *sc,
617 struct usb_device_request *req, void *data)
618 {
619 usb_error_t err;
620 int ntries = 10;
621
622 while (ntries--) {
623 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_lock,
624 req, data, 0, NULL, 250 /* ms */);
625 if (err == 0)
626 break;
627
628 DPRINTFN(1, "Control request failed, %s (retrying)\n",
629 usbd_errstr(err));
630 if (rum_pause(sc, hz / 100))
631 break;
632 }
633 return (err);
634 }
635
636 static usb_error_t
rum_do_mcu_request(struct rum_softc * sc,int request)637 rum_do_mcu_request(struct rum_softc *sc, int request)
638 {
639 struct usb_device_request req;
640
641 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
642 req.bRequest = RT2573_MCU_CNTL;
643 USETW(req.wValue, request);
644 USETW(req.wIndex, 0);
645 USETW(req.wLength, 0);
646
647 return (rum_do_request(sc, &req, NULL));
648 }
649
650 static struct ieee80211vap *
rum_vap_create(struct ieee80211com * ic,const char name[IFNAMSIZ],int unit,enum ieee80211_opmode opmode,int flags,const uint8_t bssid[IEEE80211_ADDR_LEN],const uint8_t mac[IEEE80211_ADDR_LEN])651 rum_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
652 enum ieee80211_opmode opmode, int flags,
653 const uint8_t bssid[IEEE80211_ADDR_LEN],
654 const uint8_t mac[IEEE80211_ADDR_LEN])
655 {
656 struct rum_softc *sc = ic->ic_softc;
657 struct rum_vap *rvp;
658 struct ieee80211vap *vap;
659
660 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
661 return NULL;
662 rvp = kmalloc(sizeof(struct rum_vap), M_80211_VAP, M_WAITOK | M_ZERO);
663 vap = &rvp->vap;
664 /* enable s/w bmiss handling for sta mode */
665
666 if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
667 flags | IEEE80211_CLONE_NOBEACONS, bssid) != 0) {
668 /* out of memory */
669 kfree(rvp, M_80211_VAP);
670 return (NULL);
671 }
672
673 /* override state transition machine */
674 rvp->newstate = vap->iv_newstate;
675 vap->iv_newstate = rum_newstate;
676 vap->iv_key_alloc = rum_key_alloc;
677 vap->iv_key_set = rum_key_set;
678 vap->iv_key_delete = rum_key_delete;
679 vap->iv_update_beacon = rum_update_beacon;
680 vap->iv_reset = rum_reset;
681 vap->iv_max_aid = RT2573_ADDR_MAX;
682
683 if (opmode == IEEE80211_M_STA) {
684 /*
685 * Move device to the sleep state when
686 * beacon is received and there is no data for us.
687 *
688 * Used only for IEEE80211_S_SLEEP state.
689 */
690 rvp->recv_mgmt = vap->iv_recv_mgmt;
691 vap->iv_recv_mgmt = rum_sta_recv_mgmt;
692
693 /* Ignored while sleeping. */
694 rvp->bmiss = vap->iv_bmiss;
695 vap->iv_bmiss = rum_beacon_miss;
696 }
697
698 usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_lock, 0);
699 TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp);
700 ieee80211_ratectl_init(vap);
701 ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */);
702 /* complete setup */
703 ieee80211_vap_attach(vap, ieee80211_media_change,
704 ieee80211_media_status, mac);
705 ic->ic_opmode = opmode;
706 return vap;
707 }
708
709 static void
rum_vap_delete(struct ieee80211vap * vap)710 rum_vap_delete(struct ieee80211vap *vap)
711 {
712 struct rum_vap *rvp = RUM_VAP(vap);
713 struct ieee80211com *ic = vap->iv_ic;
714
715 m_freem(rvp->bcn_mbuf);
716 usb_callout_drain(&rvp->ratectl_ch);
717 ieee80211_draintask(ic, &rvp->ratectl_task);
718 ieee80211_ratectl_deinit(vap);
719 ieee80211_vap_detach(vap);
720 kfree(rvp, M_80211_VAP);
721 }
722
723 static void
rum_cmdq_cb(void * arg,int pending)724 rum_cmdq_cb(void *arg, int pending)
725 {
726 struct rum_softc *sc = arg;
727 struct rum_cmdq *rc;
728
729 RUM_CMDQ_LOCK(sc);
730 while (sc->cmdq[sc->cmdq_first].func != NULL) {
731 rc = &sc->cmdq[sc->cmdq_first];
732 RUM_CMDQ_UNLOCK(sc);
733
734 RUM_LOCK(sc);
735 rc->func(sc, &rc->data, rc->rvp_id);
736 RUM_UNLOCK(sc);
737
738 RUM_CMDQ_LOCK(sc);
739 memset(rc, 0, sizeof (*rc));
740 sc->cmdq_first = (sc->cmdq_first + 1) % RUM_CMDQ_SIZE;
741 }
742 RUM_CMDQ_UNLOCK(sc);
743 }
744
745 static int
rum_cmd_sleepable(struct rum_softc * sc,const void * ptr,size_t len,uint8_t rvp_id,CMD_FUNC_PROTO)746 rum_cmd_sleepable(struct rum_softc *sc, const void *ptr, size_t len,
747 uint8_t rvp_id, CMD_FUNC_PROTO)
748 {
749 struct ieee80211com *ic = &sc->sc_ic;
750
751 KASSERT(len <= sizeof(union sec_param), ("buffer overflow"));
752
753 RUM_CMDQ_LOCK(sc);
754 if (sc->cmdq[sc->cmdq_last].func != NULL) {
755 device_printf(sc->sc_dev, "%s: cmdq overflow\n", __func__);
756 RUM_CMDQ_UNLOCK(sc);
757
758 return EAGAIN;
759 }
760
761 if (ptr != NULL)
762 memcpy(&sc->cmdq[sc->cmdq_last].data, ptr, len);
763 sc->cmdq[sc->cmdq_last].rvp_id = rvp_id;
764 sc->cmdq[sc->cmdq_last].func = func;
765 sc->cmdq_last = (sc->cmdq_last + 1) % RUM_CMDQ_SIZE;
766 RUM_CMDQ_UNLOCK(sc);
767
768 ieee80211_runtask(ic, &sc->cmdq_task);
769
770 return 0;
771 }
772
773 static void
rum_tx_free(struct rum_tx_data * data,int txerr)774 rum_tx_free(struct rum_tx_data *data, int txerr)
775 {
776 struct rum_softc *sc = data->sc;
777
778 if (data->m != NULL) {
779 ieee80211_tx_complete(data->ni, data->m, txerr);
780 data->m = NULL;
781 data->ni = NULL;
782 }
783 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
784 sc->tx_nfree++;
785 }
786
787 static void
rum_setup_tx_list(struct rum_softc * sc)788 rum_setup_tx_list(struct rum_softc *sc)
789 {
790 struct rum_tx_data *data;
791 int i;
792
793 sc->tx_nfree = 0;
794 STAILQ_INIT(&sc->tx_q);
795 STAILQ_INIT(&sc->tx_free);
796
797 for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
798 data = &sc->tx_data[i];
799
800 data->sc = sc;
801 STAILQ_INSERT_TAIL(&sc->tx_free, data, next);
802 sc->tx_nfree++;
803 }
804 }
805
806 static void
rum_unsetup_tx_list(struct rum_softc * sc)807 rum_unsetup_tx_list(struct rum_softc *sc)
808 {
809 struct rum_tx_data *data;
810 int i;
811
812 /* make sure any subsequent use of the queues will fail */
813 sc->tx_nfree = 0;
814 STAILQ_INIT(&sc->tx_q);
815 STAILQ_INIT(&sc->tx_free);
816
817 /* free up all node references and mbufs */
818 for (i = 0; i < RUM_TX_LIST_COUNT; i++) {
819 data = &sc->tx_data[i];
820
821 if (data->m != NULL) {
822 m_freem(data->m);
823 data->m = NULL;
824 }
825 if (data->ni != NULL) {
826 ieee80211_free_node(data->ni);
827 data->ni = NULL;
828 }
829 }
830 }
831
832 static void
rum_beacon_miss(struct ieee80211vap * vap)833 rum_beacon_miss(struct ieee80211vap *vap)
834 {
835 struct ieee80211com *ic = vap->iv_ic;
836 struct rum_softc *sc = ic->ic_softc;
837 struct rum_vap *rvp = RUM_VAP(vap);
838 int sleep;
839
840 RUM_LOCK(sc);
841 if (sc->sc_sleeping && sc->sc_sleep_end < ticks) {
842 DPRINTFN(12, "dropping 'sleeping' bit, "
843 "device must be awake now\n");
844
845 sc->sc_sleeping = 0;
846 }
847
848 sleep = sc->sc_sleeping;
849 RUM_UNLOCK(sc);
850
851 if (!sleep)
852 rvp->bmiss(vap);
853 #ifdef USB_DEBUG
854 else
855 DPRINTFN(13, "bmiss event is ignored whilst sleeping\n");
856 #endif
857 }
858
859 static void
rum_sta_recv_mgmt(struct ieee80211_node * ni,struct mbuf * m,int subtype,const struct ieee80211_rx_stats * rxs,int rssi,int nf)860 rum_sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m, int subtype,
861 const struct ieee80211_rx_stats *rxs,
862 int rssi, int nf)
863 {
864 struct ieee80211vap *vap = ni->ni_vap;
865 struct rum_softc *sc = vap->iv_ic->ic_softc;
866 struct rum_vap *rvp = RUM_VAP(vap);
867
868 if (vap->iv_state == IEEE80211_S_SLEEP &&
869 subtype == IEEE80211_FC0_SUBTYPE_BEACON) {
870 RUM_LOCK(sc);
871 DPRINTFN(12, "beacon, mybss %d (flags %02X)\n",
872 !!(sc->last_rx_flags & RT2573_RX_MYBSS),
873 sc->last_rx_flags);
874
875 if ((sc->last_rx_flags & (RT2573_RX_MYBSS | RT2573_RX_BC)) ==
876 (RT2573_RX_MYBSS | RT2573_RX_BC)) {
877 /*
878 * Put it to sleep here; in case if there is a data
879 * for us, iv_recv_mgmt() will wakeup the device via
880 * SLEEP -> RUN state transition.
881 */
882 rum_set_power_state(sc, 1);
883 }
884 RUM_UNLOCK(sc);
885 }
886
887 rvp->recv_mgmt(ni, m, subtype, rxs, rssi, nf);
888 }
889
890 static int
rum_set_power_state(struct rum_softc * sc,int sleep)891 rum_set_power_state(struct rum_softc *sc, int sleep)
892 {
893 usb_error_t uerror;
894
895 RUM_LOCK_ASSERT(sc);
896
897 DPRINTFN(12, "moving to %s state (sleep time %u)\n",
898 sleep ? "sleep" : "awake", sc->sc_sleep_time);
899
900 uerror = rum_do_mcu_request(sc,
901 sleep ? RT2573_MCU_SLEEP : RT2573_MCU_WAKEUP);
902 if (uerror != USB_ERR_NORMAL_COMPLETION) {
903 device_printf(sc->sc_dev,
904 "%s: could not change power state: %s\n",
905 __func__, usbd_errstr(uerror));
906 return (EIO);
907 }
908
909 sc->sc_sleeping = !!sleep;
910 sc->sc_sleep_end = sleep ? ticks + sc->sc_sleep_time : 0;
911
912 return (0);
913 }
914
915 static int
rum_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)916 rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
917 {
918 struct rum_vap *rvp = RUM_VAP(vap);
919 struct ieee80211com *ic = vap->iv_ic;
920 struct rum_softc *sc = ic->ic_softc;
921 const struct ieee80211_txparam *tp;
922 enum ieee80211_state ostate;
923 struct ieee80211_node *ni;
924 usb_error_t uerror;
925 int ret = 0;
926
927 ostate = vap->iv_state;
928 DPRINTF("%s -> %s\n",
929 ieee80211_state_name[ostate],
930 ieee80211_state_name[nstate]);
931
932 IEEE80211_UNLOCK(ic);
933 RUM_LOCK(sc);
934 usb_callout_stop(&rvp->ratectl_ch);
935
936 if (ostate == IEEE80211_S_SLEEP && vap->iv_opmode == IEEE80211_M_STA) {
937 rum_clrbits(sc, RT2573_TXRX_CSR4, RT2573_ACKCTS_PWRMGT);
938 rum_clrbits(sc, RT2573_MAC_CSR11, RT2573_AUTO_WAKEUP);
939
940 /*
941 * Ignore any errors;
942 * any subsequent TX will wakeup it anyway
943 */
944 (void) rum_set_power_state(sc, 0);
945 }
946
947 switch (nstate) {
948 case IEEE80211_S_INIT:
949 if (ostate == IEEE80211_S_RUN)
950 rum_abort_tsf_sync(sc);
951
952 break;
953
954 case IEEE80211_S_RUN:
955 if (ostate == IEEE80211_S_SLEEP)
956 break; /* already handled */
957
958 ni = ieee80211_ref_node(vap->iv_bss);
959
960 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
961 if (ic->ic_bsschan == IEEE80211_CHAN_ANYC ||
962 ni->ni_chan == IEEE80211_CHAN_ANYC) {
963 ret = EINVAL;
964 goto run_fail;
965 }
966 rum_update_slot_cb(sc, NULL, 0);
967 rum_enable_mrr(sc);
968 rum_set_txpreamble(sc);
969 rum_set_basicrates(sc);
970 rum_set_maxretry(sc, vap);
971 IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid);
972 rum_set_bssid(sc, sc->sc_bssid);
973 }
974
975 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
976 vap->iv_opmode == IEEE80211_M_IBSS) {
977 if ((ret = rum_alloc_beacon(sc, vap)) != 0)
978 goto run_fail;
979 }
980
981 if (vap->iv_opmode != IEEE80211_M_MONITOR &&
982 vap->iv_opmode != IEEE80211_M_AHDEMO) {
983 if ((ret = rum_enable_tsf_sync(sc)) != 0)
984 goto run_fail;
985 } else
986 rum_enable_tsf(sc);
987
988 /* enable automatic rate adaptation */
989 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
990 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
991 rum_ratectl_start(sc, ni);
992 run_fail:
993 ieee80211_free_node(ni);
994 break;
995 case IEEE80211_S_SLEEP:
996 /* Implemented for STA mode only. */
997 if (vap->iv_opmode != IEEE80211_M_STA)
998 break;
999
1000 uerror = rum_setbits(sc, RT2573_MAC_CSR11, RT2573_AUTO_WAKEUP);
1001 if (uerror != USB_ERR_NORMAL_COMPLETION) {
1002 ret = EIO;
1003 break;
1004 }
1005
1006 uerror = rum_setbits(sc, RT2573_TXRX_CSR4, RT2573_ACKCTS_PWRMGT);
1007 if (uerror != USB_ERR_NORMAL_COMPLETION) {
1008 ret = EIO;
1009 break;
1010 }
1011
1012 ret = rum_set_power_state(sc, 1);
1013 if (ret != 0) {
1014 device_printf(sc->sc_dev,
1015 "%s: could not move to the SLEEP state: %s\n",
1016 __func__, usbd_errstr(uerror));
1017 }
1018 break;
1019 default:
1020 break;
1021 }
1022 RUM_UNLOCK(sc);
1023 IEEE80211_LOCK(ic);
1024 return (ret == 0 ? rvp->newstate(vap, nstate, arg) : ret);
1025 }
1026
1027 static void
rum_bulk_write_callback(struct usb_xfer * xfer,usb_error_t error)1028 rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
1029 {
1030 struct rum_softc *sc = usbd_xfer_softc(xfer);
1031 struct ieee80211vap *vap;
1032 struct rum_tx_data *data;
1033 struct mbuf *m;
1034 struct usb_page_cache *pc;
1035 unsigned int len;
1036 int actlen, sumlen;
1037
1038 usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1039
1040 switch (USB_GET_STATE(xfer)) {
1041 case USB_ST_TRANSFERRED:
1042 DPRINTFN(11, "transfer complete, %d bytes\n", actlen);
1043
1044 /* free resources */
1045 data = usbd_xfer_get_priv(xfer);
1046 rum_tx_free(data, 0);
1047 usbd_xfer_set_priv(xfer, NULL);
1048
1049 /* FALLTHROUGH */
1050 case USB_ST_SETUP:
1051 tr_setup:
1052 data = STAILQ_FIRST(&sc->tx_q);
1053 if (data) {
1054 STAILQ_REMOVE_HEAD(&sc->tx_q, next);
1055 m = data->m;
1056
1057 if (m->m_pkthdr.len > (int)(MCLBYTES + RT2573_TX_DESC_SIZE)) {
1058 DPRINTFN(0, "data overflow, %u bytes\n",
1059 m->m_pkthdr.len);
1060 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE);
1061 }
1062 pc = usbd_xfer_get_frame(xfer, 0);
1063 usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE);
1064 usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0,
1065 m->m_pkthdr.len);
1066
1067 vap = data->ni->ni_vap;
1068 if (ieee80211_radiotap_active_vap(vap)) {
1069 struct rum_tx_radiotap_header *tap = &sc->sc_txtap;
1070
1071 tap->wt_flags = 0;
1072 tap->wt_rate = data->rate;
1073 rum_get_tsf(sc, &tap->wt_tsf);
1074 tap->wt_antenna = sc->tx_ant;
1075
1076 ieee80211_radiotap_tx(vap, m);
1077 }
1078
1079 /* align end on a 4-bytes boundary */
1080 len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3;
1081 if ((len % 64) == 0)
1082 len += 4;
1083
1084 DPRINTFN(11, "sending frame len=%u xferlen=%u\n",
1085 m->m_pkthdr.len, len);
1086
1087 usbd_xfer_set_frame_len(xfer, 0, len);
1088 usbd_xfer_set_priv(xfer, data);
1089
1090 usbd_transfer_submit(xfer);
1091 }
1092 rum_start(sc);
1093 break;
1094
1095 default: /* Error */
1096 DPRINTFN(11, "transfer error, %s\n",
1097 usbd_errstr(error));
1098
1099 #if defined(__DragonFly__)
1100 ++sc->sc_ic.ic_oerrors;
1101 #else
1102 counter_u64_add(sc->sc_ic.ic_oerrors, 1);
1103 #endif
1104 data = usbd_xfer_get_priv(xfer);
1105 if (data != NULL) {
1106 rum_tx_free(data, error);
1107 usbd_xfer_set_priv(xfer, NULL);
1108 }
1109
1110 if (error != USB_ERR_CANCELLED) {
1111 if (error == USB_ERR_TIMEOUT)
1112 device_printf(sc->sc_dev, "device timeout\n");
1113
1114 /*
1115 * Try to clear stall first, also if other
1116 * errors occur, hence clearing stall
1117 * introduces a 50 ms delay:
1118 */
1119 usbd_xfer_set_stall(xfer);
1120 goto tr_setup;
1121 }
1122 break;
1123 }
1124 }
1125
1126 static void
rum_bulk_read_callback(struct usb_xfer * xfer,usb_error_t error)1127 rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
1128 {
1129 struct rum_softc *sc = usbd_xfer_softc(xfer);
1130 struct ieee80211com *ic = &sc->sc_ic;
1131 struct ieee80211_frame_min *wh;
1132 struct ieee80211_node *ni;
1133 struct mbuf *m = NULL;
1134 struct usb_page_cache *pc;
1135 uint32_t flags;
1136 uint8_t rssi = 0;
1137 int len;
1138
1139 usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
1140
1141 switch (USB_GET_STATE(xfer)) {
1142 case USB_ST_TRANSFERRED:
1143
1144 DPRINTFN(15, "rx done, actlen=%d\n", len);
1145
1146 if (len < (int)(RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN)) {
1147 DPRINTF("%s: xfer too short %d\n",
1148 device_get_nameunit(sc->sc_dev), len);
1149 #if defined(__DragonFly__)
1150 ++ic->ic_ierrors;
1151 #else
1152 counter_u64_add(ic->ic_ierrors, 1);
1153 #endif
1154 goto tr_setup;
1155 }
1156
1157 len -= RT2573_RX_DESC_SIZE;
1158 pc = usbd_xfer_get_frame(xfer, 0);
1159 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
1160
1161 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi);
1162 flags = le32toh(sc->sc_rx_desc.flags);
1163 sc->last_rx_flags = flags;
1164 if (flags & RT2573_RX_CRC_ERROR) {
1165 /*
1166 * This should not happen since we did not
1167 * request to receive those frames when we
1168 * filled RUM_TXRX_CSR2:
1169 */
1170 DPRINTFN(5, "PHY or CRC error\n");
1171 #if defined(__DragonFly__)
1172 ++ic->ic_ierrors;
1173 #else
1174 counter_u64_add(ic->ic_ierrors, 1);
1175 #endif
1176 goto tr_setup;
1177 }
1178 if ((flags & RT2573_RX_DEC_MASK) != RT2573_RX_DEC_OK) {
1179 switch (flags & RT2573_RX_DEC_MASK) {
1180 case RT2573_RX_IV_ERROR:
1181 DPRINTFN(5, "IV/EIV error\n");
1182 break;
1183 case RT2573_RX_MIC_ERROR:
1184 DPRINTFN(5, "MIC error\n");
1185 break;
1186 case RT2573_RX_KEY_ERROR:
1187 DPRINTFN(5, "Key error\n");
1188 break;
1189 }
1190 #if defined(__DragonFly__)
1191 ++ic->ic_ierrors;
1192 #else
1193 counter_u64_add(ic->ic_ierrors, 1);
1194 #endif
1195 goto tr_setup;
1196 }
1197
1198 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1199 if (m == NULL) {
1200 DPRINTF("could not allocate mbuf\n");
1201 #if defined(__DragonFly__)
1202 ++ic->ic_ierrors;
1203 #else
1204 counter_u64_add(ic->ic_ierrors, 1);
1205 #endif
1206 goto tr_setup;
1207 }
1208 usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
1209 mtod(m, uint8_t *), len);
1210
1211 wh = mtod(m, struct ieee80211_frame_min *);
1212
1213 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) &&
1214 (flags & RT2573_RX_CIP_MASK) !=
1215 RT2573_RX_CIP_MODE(RT2573_MODE_NOSEC)) {
1216 wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED;
1217 m->m_flags |= M_WEP;
1218 }
1219
1220 /* finalize mbuf */
1221 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff;
1222
1223 if (ieee80211_radiotap_active(ic)) {
1224 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap;
1225
1226 tap->wr_flags = 0;
1227 tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate,
1228 (flags & RT2573_RX_OFDM) ?
1229 IEEE80211_T_OFDM : IEEE80211_T_CCK);
1230 rum_get_tsf(sc, &tap->wr_tsf);
1231 tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi;
1232 tap->wr_antnoise = RT2573_NOISE_FLOOR;
1233 tap->wr_antenna = sc->rx_ant;
1234 }
1235 /* FALLTHROUGH */
1236 case USB_ST_SETUP:
1237 tr_setup:
1238 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1239 usbd_transfer_submit(xfer);
1240
1241 /*
1242 * At the end of a USB callback it is always safe to unlock
1243 * the private mutex of a device! That is why we do the
1244 * "ieee80211_input" here, and not some lines up!
1245 */
1246 RUM_UNLOCK(sc);
1247 if (m) {
1248 if (m->m_len >= sizeof(struct ieee80211_frame_min))
1249 ni = ieee80211_find_rxnode(ic, wh);
1250 else
1251 ni = NULL;
1252
1253 if (ni != NULL) {
1254 (void) ieee80211_input(ni, m, rssi,
1255 RT2573_NOISE_FLOOR);
1256 ieee80211_free_node(ni);
1257 } else
1258 (void) ieee80211_input_all(ic, m, rssi,
1259 RT2573_NOISE_FLOOR);
1260 }
1261 RUM_LOCK(sc);
1262 rum_start(sc);
1263 return;
1264
1265 default: /* Error */
1266 if (error != USB_ERR_CANCELLED) {
1267 /* try to clear stall first */
1268 usbd_xfer_set_stall(xfer);
1269 goto tr_setup;
1270 }
1271 return;
1272 }
1273 }
1274
1275 static uint8_t
rum_plcp_signal(int rate)1276 rum_plcp_signal(int rate)
1277 {
1278 switch (rate) {
1279 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1280 case 12: return 0xb;
1281 case 18: return 0xf;
1282 case 24: return 0xa;
1283 case 36: return 0xe;
1284 case 48: return 0x9;
1285 case 72: return 0xd;
1286 case 96: return 0x8;
1287 case 108: return 0xc;
1288
1289 /* CCK rates (NB: not IEEE std, device-specific) */
1290 case 2: return 0x0;
1291 case 4: return 0x1;
1292 case 11: return 0x2;
1293 case 22: return 0x3;
1294 }
1295 return 0xff; /* XXX unsupported/unknown rate */
1296 }
1297
1298 /*
1299 * Map net80211 cipher to RT2573 security mode.
1300 */
1301 static uint8_t
rum_crypto_mode(struct rum_softc * sc,u_int cipher,int keylen)1302 rum_crypto_mode(struct rum_softc *sc, u_int cipher, int keylen)
1303 {
1304 switch (cipher) {
1305 case IEEE80211_CIPHER_WEP:
1306 return (keylen < 8 ? RT2573_MODE_WEP40 : RT2573_MODE_WEP104);
1307 case IEEE80211_CIPHER_TKIP:
1308 return RT2573_MODE_TKIP;
1309 case IEEE80211_CIPHER_AES_CCM:
1310 return RT2573_MODE_AES_CCMP;
1311 default:
1312 device_printf(sc->sc_dev, "unknown cipher %d\n", cipher);
1313 return 0;
1314 }
1315 }
1316
1317 static void
rum_setup_tx_desc(struct rum_softc * sc,struct rum_tx_desc * desc,struct ieee80211_key * k,uint32_t flags,uint8_t xflags,uint8_t qid,int hdrlen,int len,int rate)1318 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc,
1319 struct ieee80211_key *k, uint32_t flags, uint8_t xflags, uint8_t qid,
1320 int hdrlen, int len, int rate)
1321 {
1322 struct ieee80211com *ic = &sc->sc_ic;
1323 struct wmeParams *wmep = &sc->wme_params[qid];
1324 uint16_t plcp_length;
1325 int remainder;
1326
1327 flags |= RT2573_TX_VALID;
1328 flags |= len << 16;
1329
1330 if (k != NULL && !(k->wk_flags & IEEE80211_KEY_SWCRYPT)) {
1331 const struct ieee80211_cipher *cip = k->wk_cipher;
1332
1333 len += cip->ic_header + cip->ic_trailer + cip->ic_miclen;
1334
1335 desc->eiv = 0; /* for WEP */
1336 cip->ic_setiv(k, (uint8_t *)&desc->iv);
1337 }
1338
1339 /* setup PLCP fields */
1340 desc->plcp_signal = rum_plcp_signal(rate);
1341 desc->plcp_service = 4;
1342
1343 len += IEEE80211_CRC_LEN;
1344 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
1345 flags |= RT2573_TX_OFDM;
1346
1347 plcp_length = len & 0xfff;
1348 desc->plcp_length_hi = plcp_length >> 6;
1349 desc->plcp_length_lo = plcp_length & 0x3f;
1350 } else {
1351 if (rate == 0)
1352 rate = 2; /* avoid division by zero */
1353 plcp_length = howmany(16 * len, rate);
1354 if (rate == 22) {
1355 remainder = (16 * len) % 22;
1356 if (remainder != 0 && remainder < 7)
1357 desc->plcp_service |= RT2573_PLCP_LENGEXT;
1358 }
1359 desc->plcp_length_hi = plcp_length >> 8;
1360 desc->plcp_length_lo = plcp_length & 0xff;
1361
1362 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1363 desc->plcp_signal |= 0x08;
1364 }
1365
1366 desc->flags = htole32(flags);
1367 desc->hdrlen = hdrlen;
1368 desc->xflags = xflags;
1369
1370 desc->wme = htole16(RT2573_QID(qid) |
1371 RT2573_AIFSN(wmep->wmep_aifsn) |
1372 RT2573_LOGCWMIN(wmep->wmep_logcwmin) |
1373 RT2573_LOGCWMAX(wmep->wmep_logcwmax));
1374 }
1375
1376 static int
rum_sendprot(struct rum_softc * sc,const struct mbuf * m,struct ieee80211_node * ni,int prot,int rate)1377 rum_sendprot(struct rum_softc *sc,
1378 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
1379 {
1380 struct ieee80211com *ic = ni->ni_ic;
1381 const struct ieee80211_frame *wh;
1382 struct rum_tx_data *data;
1383 struct mbuf *mprot;
1384 int protrate, pktlen, flags, isshort;
1385 uint16_t dur;
1386
1387 RUM_LOCK_ASSERT(sc);
1388 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
1389 ("protection %d", prot));
1390
1391 wh = mtod(m, const struct ieee80211_frame *);
1392 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
1393
1394 protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
1395
1396 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
1397 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
1398 + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1399 flags = 0;
1400 if (prot == IEEE80211_PROT_RTSCTS) {
1401 /* NB: CTS is the same size as an ACK */
1402 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
1403 flags |= RT2573_TX_NEED_ACK;
1404 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
1405 } else {
1406 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
1407 }
1408 if (mprot == NULL) {
1409 /* XXX stat + msg */
1410 return (ENOBUFS);
1411 }
1412 data = STAILQ_FIRST(&sc->tx_free);
1413 STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1414 sc->tx_nfree--;
1415
1416 data->m = mprot;
1417 data->ni = ieee80211_ref_node(ni);
1418 data->rate = protrate;
1419 rum_setup_tx_desc(sc, &data->desc, NULL, flags, 0, 0, 0,
1420 mprot->m_pkthdr.len, protrate);
1421
1422 STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1423 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1424
1425 return 0;
1426 }
1427
1428 static uint32_t
rum_tx_crypto_flags(struct rum_softc * sc,struct ieee80211_node * ni,const struct ieee80211_key * k)1429 rum_tx_crypto_flags(struct rum_softc *sc, struct ieee80211_node *ni,
1430 const struct ieee80211_key *k)
1431 {
1432 struct ieee80211vap *vap = ni->ni_vap;
1433 u_int cipher;
1434 uint32_t flags = 0;
1435 uint8_t mode, pos;
1436
1437 if (!(k->wk_flags & IEEE80211_KEY_SWCRYPT)) {
1438 cipher = k->wk_cipher->ic_cipher;
1439 pos = k->wk_keyix;
1440 mode = rum_crypto_mode(sc, cipher, k->wk_keylen);
1441 if (mode == 0)
1442 return 0;
1443
1444 flags |= RT2573_TX_CIP_MODE(mode);
1445
1446 /* Do not trust GROUP flag */
1447 if (!(k >= &vap->iv_nw_keys[0] &&
1448 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]))
1449 flags |= RT2573_TX_KEY_PAIR;
1450 else
1451 pos += 0 * RT2573_SKEY_MAX; /* vap id */
1452
1453 flags |= RT2573_TX_KEY_ID(pos);
1454
1455 if (cipher == IEEE80211_CIPHER_TKIP)
1456 flags |= RT2573_TX_TKIPMIC;
1457 }
1458
1459 return flags;
1460 }
1461
1462 static int
rum_tx_mgt(struct rum_softc * sc,struct mbuf * m0,struct ieee80211_node * ni)1463 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1464 {
1465 struct ieee80211vap *vap = ni->ni_vap;
1466 struct ieee80211com *ic = &sc->sc_ic;
1467 struct rum_tx_data *data;
1468 struct ieee80211_frame *wh;
1469 const struct ieee80211_txparam *tp;
1470 struct ieee80211_key *k = NULL;
1471 uint32_t flags = 0;
1472 uint16_t dur;
1473 uint8_t ac, type, xflags = 0;
1474 int hdrlen;
1475
1476 RUM_LOCK_ASSERT(sc);
1477
1478 data = STAILQ_FIRST(&sc->tx_free);
1479 STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1480 sc->tx_nfree--;
1481
1482 wh = mtod(m0, struct ieee80211_frame *);
1483 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
1484 hdrlen = ieee80211_anyhdrsize(wh);
1485 ac = M_WME_GETAC(m0);
1486
1487 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1488 k = ieee80211_crypto_get_txkey(ni, m0);
1489 if (k == NULL)
1490 return (ENOENT);
1491
1492 if ((k->wk_flags & IEEE80211_KEY_SWCRYPT) &&
1493 !k->wk_cipher->ic_encap(k, m0))
1494 return (ENOBUFS);
1495
1496 wh = mtod(m0, struct ieee80211_frame *);
1497 }
1498
1499 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1500
1501 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1502 flags |= RT2573_TX_NEED_ACK;
1503
1504 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
1505 ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1506 USETW(wh->i_dur, dur);
1507
1508 /* tell hardware to add timestamp for probe responses */
1509 if (type == IEEE80211_FC0_TYPE_MGT &&
1510 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1511 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1512 flags |= RT2573_TX_TIMESTAMP;
1513 }
1514
1515 if (type != IEEE80211_FC0_TYPE_CTL && !IEEE80211_QOS_HAS_SEQ(wh))
1516 xflags |= RT2573_TX_HWSEQ;
1517
1518 if (k != NULL)
1519 flags |= rum_tx_crypto_flags(sc, ni, k);
1520
1521 data->m = m0;
1522 data->ni = ni;
1523 data->rate = tp->mgmtrate;
1524
1525 rum_setup_tx_desc(sc, &data->desc, k, flags, xflags, ac, hdrlen,
1526 m0->m_pkthdr.len, tp->mgmtrate);
1527
1528 DPRINTFN(10, "sending mgt frame len=%d rate=%d\n",
1529 m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate);
1530
1531 STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1532 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1533
1534 return (0);
1535 }
1536
1537 static int
rum_tx_raw(struct rum_softc * sc,struct mbuf * m0,struct ieee80211_node * ni,const struct ieee80211_bpf_params * params)1538 rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1539 const struct ieee80211_bpf_params *params)
1540 {
1541 struct ieee80211com *ic = ni->ni_ic;
1542 struct ieee80211_frame *wh;
1543 struct rum_tx_data *data;
1544 uint32_t flags;
1545 uint8_t ac, type, xflags = 0;
1546 int rate, error;
1547
1548 RUM_LOCK_ASSERT(sc);
1549
1550 wh = mtod(m0, struct ieee80211_frame *);
1551 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
1552
1553 ac = params->ibp_pri & 3;
1554
1555 rate = params->ibp_rate0;
1556 if (!ieee80211_isratevalid(ic->ic_rt, rate))
1557 return (EINVAL);
1558
1559 flags = 0;
1560 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1561 flags |= RT2573_TX_NEED_ACK;
1562 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
1563 error = rum_sendprot(sc, m0, ni,
1564 params->ibp_flags & IEEE80211_BPF_RTS ?
1565 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
1566 rate);
1567 if (error || sc->tx_nfree == 0)
1568 return (ENOBUFS);
1569
1570 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1571 }
1572
1573 if (type != IEEE80211_FC0_TYPE_CTL && !IEEE80211_QOS_HAS_SEQ(wh))
1574 xflags |= RT2573_TX_HWSEQ;
1575
1576 data = STAILQ_FIRST(&sc->tx_free);
1577 STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1578 sc->tx_nfree--;
1579
1580 data->m = m0;
1581 data->ni = ni;
1582 data->rate = rate;
1583
1584 /* XXX need to setup descriptor ourself */
1585 rum_setup_tx_desc(sc, &data->desc, NULL, flags, xflags, ac, 0,
1586 m0->m_pkthdr.len, rate);
1587
1588 DPRINTFN(10, "sending raw frame len=%u rate=%u\n",
1589 m0->m_pkthdr.len, rate);
1590
1591 STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1592 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1593
1594 return 0;
1595 }
1596
1597 static int
rum_tx_data(struct rum_softc * sc,struct mbuf * m0,struct ieee80211_node * ni)1598 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1599 {
1600 struct ieee80211vap *vap = ni->ni_vap;
1601 struct ieee80211com *ic = &sc->sc_ic;
1602 struct rum_tx_data *data;
1603 struct ieee80211_frame *wh;
1604 const struct ieee80211_txparam *tp;
1605 struct ieee80211_key *k = NULL;
1606 uint32_t flags = 0;
1607 uint16_t dur;
1608 uint8_t ac, type, qos, xflags = 0;
1609 int error, hdrlen, rate;
1610
1611 RUM_LOCK_ASSERT(sc);
1612
1613 wh = mtod(m0, struct ieee80211_frame *);
1614 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
1615 hdrlen = ieee80211_anyhdrsize(wh);
1616
1617 if (IEEE80211_QOS_HAS_SEQ(wh))
1618 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
1619 else
1620 qos = 0;
1621 ac = M_WME_GETAC(m0);
1622
1623 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1624 if (IEEE80211_IS_MULTICAST(wh->i_addr1))
1625 rate = tp->mcastrate;
1626 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1627 rate = tp->ucastrate;
1628 else
1629 rate = ni->ni_txrate;
1630
1631 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1632 k = ieee80211_crypto_get_txkey(ni, m0);
1633 if (k == NULL) {
1634 m_freem(m0);
1635 return (ENOENT);
1636 }
1637 if ((k->wk_flags & IEEE80211_KEY_SWCRYPT) &&
1638 !k->wk_cipher->ic_encap(k, m0)) {
1639 m_freem(m0);
1640 return (ENOBUFS);
1641 }
1642
1643 /* packet header may have moved, reset our local pointer */
1644 wh = mtod(m0, struct ieee80211_frame *);
1645 }
1646
1647 if (type != IEEE80211_FC0_TYPE_CTL && !IEEE80211_QOS_HAS_SEQ(wh))
1648 xflags |= RT2573_TX_HWSEQ;
1649
1650 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1651 int prot = IEEE80211_PROT_NONE;
1652 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
1653 prot = IEEE80211_PROT_RTSCTS;
1654 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1655 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
1656 prot = ic->ic_protmode;
1657 if (prot != IEEE80211_PROT_NONE) {
1658 error = rum_sendprot(sc, m0, ni, prot, rate);
1659 if (error || sc->tx_nfree == 0) {
1660 m_freem(m0);
1661 return ENOBUFS;
1662 }
1663 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS;
1664 }
1665 }
1666
1667 if (k != NULL)
1668 flags |= rum_tx_crypto_flags(sc, ni, k);
1669
1670 data = STAILQ_FIRST(&sc->tx_free);
1671 STAILQ_REMOVE_HEAD(&sc->tx_free, next);
1672 sc->tx_nfree--;
1673
1674 data->m = m0;
1675 data->ni = ni;
1676 data->rate = rate;
1677
1678 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1679 /* Unicast frame, check if an ACK is expected. */
1680 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
1681 IEEE80211_QOS_ACKPOLICY_NOACK)
1682 flags |= RT2573_TX_NEED_ACK;
1683
1684 dur = ieee80211_ack_duration(ic->ic_rt, rate,
1685 ic->ic_flags & IEEE80211_F_SHPREAMBLE);
1686 USETW(wh->i_dur, dur);
1687 }
1688
1689 rum_setup_tx_desc(sc, &data->desc, k, flags, xflags, ac, hdrlen,
1690 m0->m_pkthdr.len, rate);
1691
1692 DPRINTFN(10, "sending frame len=%d rate=%d\n",
1693 m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate);
1694
1695 STAILQ_INSERT_TAIL(&sc->tx_q, data, next);
1696 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]);
1697
1698 return 0;
1699 }
1700
1701 static int
rum_transmit(struct ieee80211com * ic,struct mbuf * m)1702 rum_transmit(struct ieee80211com *ic, struct mbuf *m)
1703 {
1704 struct rum_softc *sc = ic->ic_softc;
1705 int error;
1706
1707 RUM_LOCK(sc);
1708 if (!sc->sc_running) {
1709 RUM_UNLOCK(sc);
1710 return (ENXIO);
1711 }
1712 error = mbufq_enqueue(&sc->sc_snd, m);
1713 if (error) {
1714 RUM_UNLOCK(sc);
1715 return (error);
1716 }
1717 rum_start(sc);
1718 RUM_UNLOCK(sc);
1719
1720 return (0);
1721 }
1722
1723 static void
rum_start(struct rum_softc * sc)1724 rum_start(struct rum_softc *sc)
1725 {
1726 struct ieee80211_node *ni;
1727 struct mbuf *m;
1728
1729 RUM_LOCK_ASSERT(sc);
1730
1731 if (!sc->sc_running)
1732 return;
1733
1734 while (sc->tx_nfree >= RUM_TX_MINFREE &&
1735 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1736 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1737 if (rum_tx_data(sc, m, ni) != 0) {
1738 if_inc_counter(ni->ni_vap->iv_ifp,
1739 IFCOUNTER_OERRORS, 1);
1740 ieee80211_free_node(ni);
1741 break;
1742 }
1743 }
1744 }
1745
1746 static void
rum_parent(struct ieee80211com * ic)1747 rum_parent(struct ieee80211com *ic)
1748 {
1749 struct rum_softc *sc = ic->ic_softc;
1750 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1751
1752 RUM_LOCK(sc);
1753 if (sc->sc_detached) {
1754 RUM_UNLOCK(sc);
1755 return;
1756 }
1757 RUM_UNLOCK(sc);
1758
1759 if (ic->ic_nrunning > 0) {
1760 if (rum_init(sc) == 0)
1761 ieee80211_start_all(ic);
1762 else
1763 ieee80211_stop(vap);
1764 } else
1765 rum_stop(sc);
1766 }
1767
1768 static void
rum_eeprom_read(struct rum_softc * sc,uint16_t addr,void * buf,int len)1769 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len)
1770 {
1771 struct usb_device_request req;
1772 usb_error_t error;
1773
1774 req.bmRequestType = UT_READ_VENDOR_DEVICE;
1775 req.bRequest = RT2573_READ_EEPROM;
1776 USETW(req.wValue, 0);
1777 USETW(req.wIndex, addr);
1778 USETW(req.wLength, len);
1779
1780 error = rum_do_request(sc, &req, buf);
1781 if (error != 0) {
1782 device_printf(sc->sc_dev, "could not read EEPROM: %s\n",
1783 usbd_errstr(error));
1784 }
1785 }
1786
1787 static uint32_t
rum_read(struct rum_softc * sc,uint16_t reg)1788 rum_read(struct rum_softc *sc, uint16_t reg)
1789 {
1790 uint32_t val;
1791
1792 rum_read_multi(sc, reg, &val, sizeof val);
1793
1794 return le32toh(val);
1795 }
1796
1797 static void
rum_read_multi(struct rum_softc * sc,uint16_t reg,void * buf,int len)1798 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len)
1799 {
1800 struct usb_device_request req;
1801 usb_error_t error;
1802
1803 req.bmRequestType = UT_READ_VENDOR_DEVICE;
1804 req.bRequest = RT2573_READ_MULTI_MAC;
1805 USETW(req.wValue, 0);
1806 USETW(req.wIndex, reg);
1807 USETW(req.wLength, len);
1808
1809 error = rum_do_request(sc, &req, buf);
1810 if (error != 0) {
1811 device_printf(sc->sc_dev,
1812 "could not multi read MAC register: %s\n",
1813 usbd_errstr(error));
1814 }
1815 }
1816
1817 static usb_error_t
rum_write(struct rum_softc * sc,uint16_t reg,uint32_t val)1818 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val)
1819 {
1820 uint32_t tmp = htole32(val);
1821
1822 return (rum_write_multi(sc, reg, &tmp, sizeof tmp));
1823 }
1824
1825 static usb_error_t
rum_write_multi(struct rum_softc * sc,uint16_t reg,void * buf,size_t len)1826 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len)
1827 {
1828 struct usb_device_request req;
1829 usb_error_t error;
1830 size_t offset;
1831
1832 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1833 req.bRequest = RT2573_WRITE_MULTI_MAC;
1834 USETW(req.wValue, 0);
1835
1836 /* write at most 64 bytes at a time */
1837 for (offset = 0; offset < len; offset += 64) {
1838 USETW(req.wIndex, reg + offset);
1839 USETW(req.wLength, MIN(len - offset, 64));
1840
1841 error = rum_do_request(sc, &req, (char *)buf + offset);
1842 if (error != 0) {
1843 device_printf(sc->sc_dev,
1844 "could not multi write MAC register: %s\n",
1845 usbd_errstr(error));
1846 return (error);
1847 }
1848 }
1849
1850 return (USB_ERR_NORMAL_COMPLETION);
1851 }
1852
1853 static usb_error_t
rum_setbits(struct rum_softc * sc,uint16_t reg,uint32_t mask)1854 rum_setbits(struct rum_softc *sc, uint16_t reg, uint32_t mask)
1855 {
1856 return (rum_write(sc, reg, rum_read(sc, reg) | mask));
1857 }
1858
1859 static usb_error_t
rum_clrbits(struct rum_softc * sc,uint16_t reg,uint32_t mask)1860 rum_clrbits(struct rum_softc *sc, uint16_t reg, uint32_t mask)
1861 {
1862 return (rum_write(sc, reg, rum_read(sc, reg) & ~mask));
1863 }
1864
1865 static usb_error_t
rum_modbits(struct rum_softc * sc,uint16_t reg,uint32_t set,uint32_t unset)1866 rum_modbits(struct rum_softc *sc, uint16_t reg, uint32_t set, uint32_t unset)
1867 {
1868 return (rum_write(sc, reg, (rum_read(sc, reg) & ~unset) | set));
1869 }
1870
1871 static int
rum_bbp_busy(struct rum_softc * sc)1872 rum_bbp_busy(struct rum_softc *sc)
1873 {
1874 int ntries;
1875
1876 for (ntries = 0; ntries < 100; ntries++) {
1877 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY))
1878 break;
1879 if (rum_pause(sc, hz / 100))
1880 break;
1881 }
1882 if (ntries == 100)
1883 return (ETIMEDOUT);
1884
1885 return (0);
1886 }
1887
1888 static void
rum_bbp_write(struct rum_softc * sc,uint8_t reg,uint8_t val)1889 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val)
1890 {
1891 uint32_t tmp;
1892
1893 DPRINTFN(2, "reg=0x%08x\n", reg);
1894
1895 if (rum_bbp_busy(sc) != 0) {
1896 device_printf(sc->sc_dev, "could not write to BBP\n");
1897 return;
1898 }
1899
1900 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val;
1901 rum_write(sc, RT2573_PHY_CSR3, tmp);
1902 }
1903
1904 static uint8_t
rum_bbp_read(struct rum_softc * sc,uint8_t reg)1905 rum_bbp_read(struct rum_softc *sc, uint8_t reg)
1906 {
1907 uint32_t val;
1908 int ntries;
1909
1910 DPRINTFN(2, "reg=0x%08x\n", reg);
1911
1912 if (rum_bbp_busy(sc) != 0) {
1913 device_printf(sc->sc_dev, "could not read BBP\n");
1914 return 0;
1915 }
1916
1917 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8;
1918 rum_write(sc, RT2573_PHY_CSR3, val);
1919
1920 for (ntries = 0; ntries < 100; ntries++) {
1921 val = rum_read(sc, RT2573_PHY_CSR3);
1922 if (!(val & RT2573_BBP_BUSY))
1923 return val & 0xff;
1924 if (rum_pause(sc, hz / 100))
1925 break;
1926 }
1927
1928 device_printf(sc->sc_dev, "could not read BBP\n");
1929 return 0;
1930 }
1931
1932 static void
rum_rf_write(struct rum_softc * sc,uint8_t reg,uint32_t val)1933 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val)
1934 {
1935 uint32_t tmp;
1936 int ntries;
1937
1938 for (ntries = 0; ntries < 100; ntries++) {
1939 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY))
1940 break;
1941 if (rum_pause(sc, hz / 100))
1942 break;
1943 }
1944 if (ntries == 100) {
1945 device_printf(sc->sc_dev, "could not write to RF\n");
1946 return;
1947 }
1948
1949 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 |
1950 (reg & 3);
1951 rum_write(sc, RT2573_PHY_CSR4, tmp);
1952
1953 /* remember last written value in sc */
1954 sc->rf_regs[reg] = val;
1955
1956 DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff);
1957 }
1958
1959 static void
rum_select_antenna(struct rum_softc * sc)1960 rum_select_antenna(struct rum_softc *sc)
1961 {
1962 uint8_t bbp4, bbp77;
1963 uint32_t tmp;
1964
1965 bbp4 = rum_bbp_read(sc, 4);
1966 bbp77 = rum_bbp_read(sc, 77);
1967
1968 /* TBD */
1969
1970 /* make sure Rx is disabled before switching antenna */
1971 tmp = rum_read(sc, RT2573_TXRX_CSR0);
1972 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX);
1973
1974 rum_bbp_write(sc, 4, bbp4);
1975 rum_bbp_write(sc, 77, bbp77);
1976
1977 rum_write(sc, RT2573_TXRX_CSR0, tmp);
1978 }
1979
1980 /*
1981 * Enable multi-rate retries for frames sent at OFDM rates.
1982 * In 802.11b/g mode, allow fallback to CCK rates.
1983 */
1984 static void
rum_enable_mrr(struct rum_softc * sc)1985 rum_enable_mrr(struct rum_softc *sc)
1986 {
1987 struct ieee80211com *ic = &sc->sc_ic;
1988
1989 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
1990 rum_setbits(sc, RT2573_TXRX_CSR4,
1991 RT2573_MRR_ENABLED | RT2573_MRR_CCK_FALLBACK);
1992 } else {
1993 rum_modbits(sc, RT2573_TXRX_CSR4,
1994 RT2573_MRR_ENABLED, RT2573_MRR_CCK_FALLBACK);
1995 }
1996 }
1997
1998 static void
rum_set_txpreamble(struct rum_softc * sc)1999 rum_set_txpreamble(struct rum_softc *sc)
2000 {
2001 struct ieee80211com *ic = &sc->sc_ic;
2002
2003 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
2004 rum_setbits(sc, RT2573_TXRX_CSR4, RT2573_SHORT_PREAMBLE);
2005 else
2006 rum_clrbits(sc, RT2573_TXRX_CSR4, RT2573_SHORT_PREAMBLE);
2007 }
2008
2009 static void
rum_set_basicrates(struct rum_softc * sc)2010 rum_set_basicrates(struct rum_softc *sc)
2011 {
2012 struct ieee80211com *ic = &sc->sc_ic;
2013
2014 /* update basic rate set */
2015 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2016 /* 11b basic rates: 1, 2Mbps */
2017 rum_write(sc, RT2573_TXRX_CSR5, 0x3);
2018 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) {
2019 /* 11a basic rates: 6, 12, 24Mbps */
2020 rum_write(sc, RT2573_TXRX_CSR5, 0x150);
2021 } else {
2022 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
2023 rum_write(sc, RT2573_TXRX_CSR5, 0xf);
2024 }
2025 }
2026
2027 /*
2028 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference
2029 * driver.
2030 */
2031 static void
rum_select_band(struct rum_softc * sc,struct ieee80211_channel * c)2032 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c)
2033 {
2034 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104;
2035
2036 /* update all BBP registers that depend on the band */
2037 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c;
2038 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48;
2039 if (IEEE80211_IS_CHAN_5GHZ(c)) {
2040 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c;
2041 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10;
2042 }
2043 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
2044 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
2045 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10;
2046 }
2047
2048 sc->bbp17 = bbp17;
2049 rum_bbp_write(sc, 17, bbp17);
2050 rum_bbp_write(sc, 96, bbp96);
2051 rum_bbp_write(sc, 104, bbp104);
2052
2053 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) ||
2054 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) {
2055 rum_bbp_write(sc, 75, 0x80);
2056 rum_bbp_write(sc, 86, 0x80);
2057 rum_bbp_write(sc, 88, 0x80);
2058 }
2059
2060 rum_bbp_write(sc, 35, bbp35);
2061 rum_bbp_write(sc, 97, bbp97);
2062 rum_bbp_write(sc, 98, bbp98);
2063
2064 if (IEEE80211_IS_CHAN_2GHZ(c)) {
2065 rum_modbits(sc, RT2573_PHY_CSR0, RT2573_PA_PE_2GHZ,
2066 RT2573_PA_PE_5GHZ);
2067 } else {
2068 rum_modbits(sc, RT2573_PHY_CSR0, RT2573_PA_PE_5GHZ,
2069 RT2573_PA_PE_2GHZ);
2070 }
2071 }
2072
2073 static void
rum_set_chan(struct rum_softc * sc,struct ieee80211_channel * c)2074 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c)
2075 {
2076 struct ieee80211com *ic = &sc->sc_ic;
2077 const struct rfprog *rfprog;
2078 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT;
2079 int8_t power;
2080 int i, chan;
2081
2082 chan = ieee80211_chan2ieee(ic, c);
2083 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2084 return;
2085
2086 /* select the appropriate RF settings based on what EEPROM says */
2087 rfprog = (sc->rf_rev == RT2573_RF_5225 ||
2088 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226;
2089
2090 /* find the settings for this channel (we know it exists) */
2091 for (i = 0; rfprog[i].chan != chan; i++);
2092
2093 power = sc->txpow[i];
2094 if (power < 0) {
2095 bbp94 += power;
2096 power = 0;
2097 } else if (power > 31) {
2098 bbp94 += power - 31;
2099 power = 31;
2100 }
2101
2102 /*
2103 * If we are switching from the 2GHz band to the 5GHz band or
2104 * vice-versa, BBP registers need to be reprogrammed.
2105 */
2106 if (c->ic_flags != ic->ic_curchan->ic_flags) {
2107 rum_select_band(sc, c);
2108 rum_select_antenna(sc);
2109 }
2110 ic->ic_curchan = c;
2111
2112 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
2113 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
2114 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
2115 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
2116
2117 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
2118 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
2119 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1);
2120 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
2121
2122 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1);
2123 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2);
2124 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7);
2125 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10);
2126
2127 rum_pause(sc, hz / 100);
2128
2129 /* enable smart mode for MIMO-capable RFs */
2130 bbp3 = rum_bbp_read(sc, 3);
2131
2132 bbp3 &= ~RT2573_SMART_MODE;
2133 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527)
2134 bbp3 |= RT2573_SMART_MODE;
2135
2136 rum_bbp_write(sc, 3, bbp3);
2137
2138 if (bbp94 != RT2573_BBPR94_DEFAULT)
2139 rum_bbp_write(sc, 94, bbp94);
2140
2141 /* give the chip some extra time to do the switchover */
2142 rum_pause(sc, hz / 100);
2143 }
2144
2145 static void
rum_set_maxretry(struct rum_softc * sc,struct ieee80211vap * vap)2146 rum_set_maxretry(struct rum_softc *sc, struct ieee80211vap *vap)
2147 {
2148 const struct ieee80211_txparam *tp;
2149 struct ieee80211_node *ni = vap->iv_bss;
2150 struct rum_vap *rvp = RUM_VAP(vap);
2151
2152 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
2153 rvp->maxretry = tp->maxretry < 0xf ? tp->maxretry : 0xf;
2154
2155 rum_modbits(sc, RT2573_TXRX_CSR4, RT2573_SHORT_RETRY(rvp->maxretry) |
2156 RT2573_LONG_RETRY(rvp->maxretry),
2157 RT2573_SHORT_RETRY_MASK | RT2573_LONG_RETRY_MASK);
2158 }
2159
2160 /*
2161 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS
2162 * and HostAP operating modes.
2163 */
2164 static int
rum_enable_tsf_sync(struct rum_softc * sc)2165 rum_enable_tsf_sync(struct rum_softc *sc)
2166 {
2167 struct ieee80211com *ic = &sc->sc_ic;
2168 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2169 uint32_t tmp;
2170 uint16_t bintval;
2171
2172 if (vap->iv_opmode != IEEE80211_M_STA) {
2173 /*
2174 * Change default 16ms TBTT adjustment to 8ms.
2175 * Must be done before enabling beacon generation.
2176 */
2177 if (rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8) != 0)
2178 return EIO;
2179 }
2180
2181 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000;
2182
2183 /* set beacon interval (in 1/16ms unit) */
2184 bintval = vap->iv_bss->ni_intval;
2185 tmp |= bintval * 16;
2186 tmp |= RT2573_TSF_TIMER_EN | RT2573_TBTT_TIMER_EN;
2187
2188 switch (vap->iv_opmode) {
2189 case IEEE80211_M_STA:
2190 /*
2191 * Local TSF is always updated with remote TSF on beacon
2192 * reception.
2193 */
2194 tmp |= RT2573_TSF_SYNC_MODE(RT2573_TSF_SYNC_MODE_STA);
2195 break;
2196 case IEEE80211_M_IBSS:
2197 /*
2198 * Local TSF is updated with remote TSF on beacon reception
2199 * only if the remote TSF is greater than local TSF.
2200 */
2201 tmp |= RT2573_TSF_SYNC_MODE(RT2573_TSF_SYNC_MODE_IBSS);
2202 tmp |= RT2573_BCN_TX_EN;
2203 break;
2204 case IEEE80211_M_HOSTAP:
2205 /* SYNC with nobody */
2206 tmp |= RT2573_TSF_SYNC_MODE(RT2573_TSF_SYNC_MODE_HOSTAP);
2207 tmp |= RT2573_BCN_TX_EN;
2208 break;
2209 default:
2210 device_printf(sc->sc_dev,
2211 "Enabling TSF failed. undefined opmode %d\n",
2212 vap->iv_opmode);
2213 return EINVAL;
2214 }
2215
2216 if (rum_write(sc, RT2573_TXRX_CSR9, tmp) != 0)
2217 return EIO;
2218
2219 /* refresh current sleep time */
2220 return (rum_set_sleep_time(sc, bintval));
2221 }
2222
2223 static void
rum_enable_tsf(struct rum_softc * sc)2224 rum_enable_tsf(struct rum_softc *sc)
2225 {
2226 rum_modbits(sc, RT2573_TXRX_CSR9, RT2573_TSF_TIMER_EN |
2227 RT2573_TSF_SYNC_MODE(RT2573_TSF_SYNC_MODE_DIS), 0x00ffffff);
2228 }
2229
2230 static void
rum_abort_tsf_sync(struct rum_softc * sc)2231 rum_abort_tsf_sync(struct rum_softc *sc)
2232 {
2233 rum_clrbits(sc, RT2573_TXRX_CSR9, 0x00ffffff);
2234 }
2235
2236 static void
rum_get_tsf(struct rum_softc * sc,uint64_t * buf)2237 rum_get_tsf(struct rum_softc *sc, uint64_t *buf)
2238 {
2239 rum_read_multi(sc, RT2573_TXRX_CSR12, buf, sizeof (*buf));
2240 }
2241
2242 static void
rum_update_slot_cb(struct rum_softc * sc,union sec_param * data,uint8_t rvp_id)2243 rum_update_slot_cb(struct rum_softc *sc, union sec_param *data, uint8_t rvp_id)
2244 {
2245 struct ieee80211com *ic = &sc->sc_ic;
2246 uint8_t slottime;
2247
2248 slottime = IEEE80211_GET_SLOTTIME(ic);
2249
2250 rum_modbits(sc, RT2573_MAC_CSR9, slottime, 0xff);
2251
2252 DPRINTF("setting slot time to %uus\n", slottime);
2253 }
2254
2255 static void
rum_update_slot(struct ieee80211com * ic)2256 rum_update_slot(struct ieee80211com *ic)
2257 {
2258 rum_cmd_sleepable(ic->ic_softc, NULL, 0, 0, rum_update_slot_cb);
2259 }
2260
2261 static int
rum_wme_update(struct ieee80211com * ic)2262 rum_wme_update(struct ieee80211com *ic)
2263 {
2264 const struct wmeParams *chanp =
2265 ic->ic_wme.wme_chanParams.cap_wmeParams;
2266 struct rum_softc *sc = ic->ic_softc;
2267 int error = 0;
2268
2269 RUM_LOCK(sc);
2270 error = rum_write(sc, RT2573_AIFSN_CSR,
2271 chanp[WME_AC_VO].wmep_aifsn << 12 |
2272 chanp[WME_AC_VI].wmep_aifsn << 8 |
2273 chanp[WME_AC_BK].wmep_aifsn << 4 |
2274 chanp[WME_AC_BE].wmep_aifsn);
2275 if (error)
2276 goto print_err;
2277 error = rum_write(sc, RT2573_CWMIN_CSR,
2278 chanp[WME_AC_VO].wmep_logcwmin << 12 |
2279 chanp[WME_AC_VI].wmep_logcwmin << 8 |
2280 chanp[WME_AC_BK].wmep_logcwmin << 4 |
2281 chanp[WME_AC_BE].wmep_logcwmin);
2282 if (error)
2283 goto print_err;
2284 error = rum_write(sc, RT2573_CWMAX_CSR,
2285 chanp[WME_AC_VO].wmep_logcwmax << 12 |
2286 chanp[WME_AC_VI].wmep_logcwmax << 8 |
2287 chanp[WME_AC_BK].wmep_logcwmax << 4 |
2288 chanp[WME_AC_BE].wmep_logcwmax);
2289 if (error)
2290 goto print_err;
2291 error = rum_write(sc, RT2573_TXOP01_CSR,
2292 chanp[WME_AC_BK].wmep_txopLimit << 16 |
2293 chanp[WME_AC_BE].wmep_txopLimit);
2294 if (error)
2295 goto print_err;
2296 error = rum_write(sc, RT2573_TXOP23_CSR,
2297 chanp[WME_AC_VO].wmep_txopLimit << 16 |
2298 chanp[WME_AC_VI].wmep_txopLimit);
2299 if (error)
2300 goto print_err;
2301
2302 memcpy(sc->wme_params, chanp, sizeof(*chanp) * WME_NUM_AC);
2303
2304 print_err:
2305 RUM_UNLOCK(sc);
2306 if (error != 0) {
2307 device_printf(sc->sc_dev, "%s: WME update failed, error %d\n",
2308 __func__, error);
2309 }
2310
2311 return (error);
2312 }
2313
2314 static void
rum_set_bssid(struct rum_softc * sc,const uint8_t * bssid)2315 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid)
2316 {
2317
2318 rum_write(sc, RT2573_MAC_CSR4,
2319 bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24);
2320 rum_write(sc, RT2573_MAC_CSR5,
2321 bssid[4] | bssid[5] << 8 | RT2573_NUM_BSSID_MSK(1));
2322 }
2323
2324 static void
rum_set_macaddr(struct rum_softc * sc,const uint8_t * addr)2325 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr)
2326 {
2327
2328 rum_write(sc, RT2573_MAC_CSR2,
2329 addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24);
2330 rum_write(sc, RT2573_MAC_CSR3,
2331 addr[4] | addr[5] << 8 | 0xff << 16);
2332 }
2333
2334 static void
rum_setpromisc(struct rum_softc * sc)2335 rum_setpromisc(struct rum_softc *sc)
2336 {
2337 struct ieee80211com *ic = &sc->sc_ic;
2338
2339 if (ic->ic_promisc == 0)
2340 rum_setbits(sc, RT2573_TXRX_CSR0, RT2573_DROP_NOT_TO_ME);
2341 else
2342 rum_clrbits(sc, RT2573_TXRX_CSR0, RT2573_DROP_NOT_TO_ME);
2343
2344 DPRINTF("%s promiscuous mode\n", ic->ic_promisc > 0 ?
2345 "entering" : "leaving");
2346 }
2347
2348 static void
rum_update_promisc(struct ieee80211com * ic)2349 rum_update_promisc(struct ieee80211com *ic)
2350 {
2351 struct rum_softc *sc = ic->ic_softc;
2352
2353 RUM_LOCK(sc);
2354 if (sc->sc_running)
2355 rum_setpromisc(sc);
2356 RUM_UNLOCK(sc);
2357 }
2358
2359 static void
rum_update_mcast(struct ieee80211com * ic)2360 rum_update_mcast(struct ieee80211com *ic)
2361 {
2362 /* Ignore. */
2363 }
2364
2365 static const char *
rum_get_rf(int rev)2366 rum_get_rf(int rev)
2367 {
2368 switch (rev) {
2369 case RT2573_RF_2527: return "RT2527 (MIMO XR)";
2370 case RT2573_RF_2528: return "RT2528";
2371 case RT2573_RF_5225: return "RT5225 (MIMO XR)";
2372 case RT2573_RF_5226: return "RT5226";
2373 default: return "unknown";
2374 }
2375 }
2376
2377 static void
rum_read_eeprom(struct rum_softc * sc)2378 rum_read_eeprom(struct rum_softc *sc)
2379 {
2380 uint16_t val;
2381 #ifdef RUM_DEBUG
2382 int i;
2383 #endif
2384
2385 /* read MAC address */
2386 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_ic.ic_macaddr, 6);
2387
2388 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2);
2389 val = le16toh(val);
2390 sc->rf_rev = (val >> 11) & 0x1f;
2391 sc->hw_radio = (val >> 10) & 0x1;
2392 sc->rx_ant = (val >> 4) & 0x3;
2393 sc->tx_ant = (val >> 2) & 0x3;
2394 sc->nb_ant = val & 0x3;
2395
2396 DPRINTF("RF revision=%d\n", sc->rf_rev);
2397
2398 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2);
2399 val = le16toh(val);
2400 sc->ext_5ghz_lna = (val >> 6) & 0x1;
2401 sc->ext_2ghz_lna = (val >> 4) & 0x1;
2402
2403 DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n",
2404 sc->ext_2ghz_lna, sc->ext_5ghz_lna);
2405
2406 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2);
2407 val = le16toh(val);
2408 if ((val & 0xff) != 0xff)
2409 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */
2410
2411 /* Only [-10, 10] is valid */
2412 if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10)
2413 sc->rssi_2ghz_corr = 0;
2414
2415 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2);
2416 val = le16toh(val);
2417 if ((val & 0xff) != 0xff)
2418 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */
2419
2420 /* Only [-10, 10] is valid */
2421 if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10)
2422 sc->rssi_5ghz_corr = 0;
2423
2424 if (sc->ext_2ghz_lna)
2425 sc->rssi_2ghz_corr -= 14;
2426 if (sc->ext_5ghz_lna)
2427 sc->rssi_5ghz_corr -= 14;
2428
2429 DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n",
2430 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr);
2431
2432 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2);
2433 val = le16toh(val);
2434 if ((val & 0xff) != 0xff)
2435 sc->rffreq = val & 0xff;
2436
2437 DPRINTF("RF freq=%d\n", sc->rffreq);
2438
2439 /* read Tx power for all a/b/g channels */
2440 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14);
2441 /* XXX default Tx power for 802.11a channels */
2442 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14);
2443 #ifdef RUM_DEBUG
2444 for (i = 0; i < 14; i++)
2445 DPRINTF("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i]);
2446 #endif
2447
2448 /* read default values for BBP registers */
2449 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
2450 #ifdef RUM_DEBUG
2451 for (i = 0; i < 14; i++) {
2452 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
2453 continue;
2454 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg,
2455 sc->bbp_prom[i].val);
2456 }
2457 #endif
2458 }
2459
2460 static int
rum_bbp_wakeup(struct rum_softc * sc)2461 rum_bbp_wakeup(struct rum_softc *sc)
2462 {
2463 unsigned int ntries;
2464
2465 for (ntries = 0; ntries < 100; ntries++) {
2466 if (rum_read(sc, RT2573_MAC_CSR12) & 8)
2467 break;
2468 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */
2469 if (rum_pause(sc, hz / 100))
2470 break;
2471 }
2472 if (ntries == 100) {
2473 device_printf(sc->sc_dev,
2474 "timeout waiting for BBP/RF to wakeup\n");
2475 return (ETIMEDOUT);
2476 }
2477
2478 return (0);
2479 }
2480
2481 static int
rum_bbp_init(struct rum_softc * sc)2482 rum_bbp_init(struct rum_softc *sc)
2483 {
2484 int i, ntries;
2485
2486 /* wait for BBP to be ready */
2487 for (ntries = 0; ntries < 100; ntries++) {
2488 const uint8_t val = rum_bbp_read(sc, 0);
2489 if (val != 0 && val != 0xff)
2490 break;
2491 if (rum_pause(sc, hz / 100))
2492 break;
2493 }
2494 if (ntries == 100) {
2495 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2496 return EIO;
2497 }
2498
2499 /* initialize BBP registers to default values */
2500 for (i = 0; i < nitems(rum_def_bbp); i++)
2501 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val);
2502
2503 /* write vendor-specific BBP values (from EEPROM) */
2504 for (i = 0; i < 16; i++) {
2505 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff)
2506 continue;
2507 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2508 }
2509
2510 return 0;
2511 }
2512
2513 static void
rum_clr_shkey_regs(struct rum_softc * sc)2514 rum_clr_shkey_regs(struct rum_softc *sc)
2515 {
2516 rum_write(sc, RT2573_SEC_CSR0, 0);
2517 rum_write(sc, RT2573_SEC_CSR1, 0);
2518 rum_write(sc, RT2573_SEC_CSR5, 0);
2519 }
2520
2521 static int
rum_init(struct rum_softc * sc)2522 rum_init(struct rum_softc *sc)
2523 {
2524 struct ieee80211com *ic = &sc->sc_ic;
2525 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2526 uint32_t tmp;
2527 int i, ret;
2528
2529 RUM_LOCK(sc);
2530 if (sc->sc_running) {
2531 ret = 0;
2532 goto end;
2533 }
2534
2535 /* initialize MAC registers to default values */
2536 for (i = 0; i < nitems(rum_def_mac); i++)
2537 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val);
2538
2539 /* reset some WME parameters to default values */
2540 sc->wme_params[0].wmep_aifsn = 2;
2541 sc->wme_params[0].wmep_logcwmin = 4;
2542 sc->wme_params[0].wmep_logcwmax = 10;
2543
2544 /* set host ready */
2545 rum_write(sc, RT2573_MAC_CSR1, RT2573_RESET_ASIC | RT2573_RESET_BBP);
2546 rum_write(sc, RT2573_MAC_CSR1, 0);
2547
2548 /* wait for BBP/RF to wakeup */
2549 if ((ret = rum_bbp_wakeup(sc)) != 0)
2550 goto end;
2551
2552 if ((ret = rum_bbp_init(sc)) != 0)
2553 goto end;
2554
2555 /* select default channel */
2556 rum_select_band(sc, ic->ic_curchan);
2557 rum_select_antenna(sc);
2558 rum_set_chan(sc, ic->ic_curchan);
2559
2560 /* clear STA registers */
2561 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
2562
2563 /* clear security registers (if required) */
2564 if (sc->sc_clr_shkeys == 0) {
2565 rum_clr_shkey_regs(sc);
2566 sc->sc_clr_shkeys = 1;
2567 }
2568
2569 rum_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr);
2570
2571 /* initialize ASIC */
2572 rum_write(sc, RT2573_MAC_CSR1, RT2573_HOST_READY);
2573
2574 /*
2575 * Allocate Tx and Rx xfer queues.
2576 */
2577 rum_setup_tx_list(sc);
2578
2579 /* update Rx filter */
2580 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff;
2581
2582 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR;
2583 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2584 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR |
2585 RT2573_DROP_ACKCTS;
2586 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2587 tmp |= RT2573_DROP_TODS;
2588 if (ic->ic_promisc == 0)
2589 tmp |= RT2573_DROP_NOT_TO_ME;
2590 }
2591 rum_write(sc, RT2573_TXRX_CSR0, tmp);
2592
2593 sc->sc_running = 1;
2594 usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]);
2595 usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]);
2596
2597 end: RUM_UNLOCK(sc);
2598
2599 if (ret != 0)
2600 rum_stop(sc);
2601
2602 return ret;
2603 }
2604
2605 static void
rum_stop(struct rum_softc * sc)2606 rum_stop(struct rum_softc *sc)
2607 {
2608
2609 RUM_LOCK(sc);
2610 if (!sc->sc_running) {
2611 RUM_UNLOCK(sc);
2612 return;
2613 }
2614 sc->sc_running = 0;
2615 RUM_UNLOCK(sc);
2616
2617 /*
2618 * Drain the USB transfers, if not already drained:
2619 */
2620 usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]);
2621 usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]);
2622
2623 RUM_LOCK(sc);
2624 rum_unsetup_tx_list(sc);
2625
2626 /* disable Rx */
2627 rum_setbits(sc, RT2573_TXRX_CSR0, RT2573_DISABLE_RX);
2628
2629 /* reset ASIC */
2630 rum_write(sc, RT2573_MAC_CSR1, RT2573_RESET_ASIC | RT2573_RESET_BBP);
2631 rum_write(sc, RT2573_MAC_CSR1, 0);
2632 RUM_UNLOCK(sc);
2633 }
2634
2635 static void
rum_load_microcode(struct rum_softc * sc,const uint8_t * ucode,size_t size)2636 rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size)
2637 {
2638 uint16_t reg = RT2573_MCU_CODE_BASE;
2639 usb_error_t err;
2640
2641 /* copy firmware image into NIC */
2642 for (; size >= 4; reg += 4, ucode += 4, size -= 4) {
2643 err = rum_write(sc, reg, UGETDW(ucode));
2644 if (err) {
2645 /* firmware already loaded ? */
2646 device_printf(sc->sc_dev, "Firmware load "
2647 "failure! (ignored)\n");
2648 break;
2649 }
2650 }
2651
2652 err = rum_do_mcu_request(sc, RT2573_MCU_RUN);
2653 if (err != USB_ERR_NORMAL_COMPLETION) {
2654 device_printf(sc->sc_dev, "could not run firmware: %s\n",
2655 usbd_errstr(err));
2656 }
2657
2658 /* give the chip some time to boot */
2659 rum_pause(sc, hz / 8);
2660 }
2661
2662 static int
rum_set_sleep_time(struct rum_softc * sc,uint16_t bintval)2663 rum_set_sleep_time(struct rum_softc *sc, uint16_t bintval)
2664 {
2665 struct ieee80211com *ic = &sc->sc_ic;
2666 usb_error_t uerror;
2667 int exp, delay;
2668
2669 RUM_LOCK_ASSERT(sc);
2670
2671 exp = ic->ic_lintval / bintval;
2672 delay = ic->ic_lintval % bintval;
2673
2674 if (exp > RT2573_TBCN_EXP_MAX)
2675 exp = RT2573_TBCN_EXP_MAX;
2676 if (delay > RT2573_TBCN_DELAY_MAX)
2677 delay = RT2573_TBCN_DELAY_MAX;
2678
2679 uerror = rum_modbits(sc, RT2573_MAC_CSR11,
2680 RT2573_TBCN_EXP(exp) |
2681 RT2573_TBCN_DELAY(delay),
2682 RT2573_TBCN_EXP(RT2573_TBCN_EXP_MAX) |
2683 RT2573_TBCN_DELAY(RT2573_TBCN_DELAY_MAX));
2684
2685 if (uerror != USB_ERR_NORMAL_COMPLETION)
2686 return (EIO);
2687
2688 sc->sc_sleep_time = IEEE80211_TU_TO_TICKS(exp * bintval + delay);
2689
2690 return (0);
2691 }
2692
2693 static int
rum_reset(struct ieee80211vap * vap,u_long cmd)2694 rum_reset(struct ieee80211vap *vap, u_long cmd)
2695 {
2696 struct ieee80211com *ic = vap->iv_ic;
2697 struct ieee80211_node *ni;
2698 struct rum_softc *sc = ic->ic_softc;
2699 int error;
2700
2701 switch (cmd) {
2702 case IEEE80211_IOC_POWERSAVE:
2703 error = 0;
2704 break;
2705 case IEEE80211_IOC_POWERSAVESLEEP:
2706 ni = ieee80211_ref_node(vap->iv_bss);
2707
2708 RUM_LOCK(sc);
2709 error = rum_set_sleep_time(sc, ni->ni_intval);
2710 if (vap->iv_state == IEEE80211_S_SLEEP) {
2711 /* Use new values for wakeup timer. */
2712 rum_clrbits(sc, RT2573_MAC_CSR11, RT2573_AUTO_WAKEUP);
2713 rum_setbits(sc, RT2573_MAC_CSR11, RT2573_AUTO_WAKEUP);
2714 }
2715 /* XXX send reassoc */
2716 RUM_UNLOCK(sc);
2717
2718 ieee80211_free_node(ni);
2719 break;
2720 default:
2721 error = ENETRESET;
2722 break;
2723 }
2724
2725 return (error);
2726 }
2727
2728 static int
rum_set_beacon(struct rum_softc * sc,struct ieee80211vap * vap)2729 rum_set_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2730 {
2731 struct ieee80211com *ic = vap->iv_ic;
2732 struct rum_vap *rvp = RUM_VAP(vap);
2733 struct mbuf *m = rvp->bcn_mbuf;
2734 const struct ieee80211_txparam *tp;
2735 struct rum_tx_desc desc;
2736
2737 RUM_LOCK_ASSERT(sc);
2738
2739 if (m == NULL)
2740 return EINVAL;
2741 if (ic->ic_bsschan == IEEE80211_CHAN_ANYC)
2742 return EINVAL;
2743
2744 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
2745 rum_setup_tx_desc(sc, &desc, NULL, RT2573_TX_TIMESTAMP,
2746 RT2573_TX_HWSEQ, 0, 0, m->m_pkthdr.len, tp->mgmtrate);
2747
2748 /* copy the Tx descriptor into NIC memory */
2749 if (rum_write_multi(sc, RT2573_HW_BCN_BASE(0), (uint8_t *)&desc,
2750 RT2573_TX_DESC_SIZE) != 0)
2751 return EIO;
2752
2753 /* copy beacon header and payload into NIC memory */
2754 if (rum_write_multi(sc, RT2573_HW_BCN_BASE(0) + RT2573_TX_DESC_SIZE,
2755 mtod(m, uint8_t *), m->m_pkthdr.len) != 0)
2756 return EIO;
2757
2758 return 0;
2759 }
2760
2761 static int
rum_alloc_beacon(struct rum_softc * sc,struct ieee80211vap * vap)2762 rum_alloc_beacon(struct rum_softc *sc, struct ieee80211vap *vap)
2763 {
2764 struct rum_vap *rvp = RUM_VAP(vap);
2765 struct ieee80211_node *ni = vap->iv_bss;
2766 struct mbuf *m;
2767
2768 if (ni->ni_chan == IEEE80211_CHAN_ANYC)
2769 return EINVAL;
2770
2771 m = ieee80211_beacon_alloc(ni);
2772 if (m == NULL)
2773 return ENOMEM;
2774
2775 if (rvp->bcn_mbuf != NULL)
2776 m_freem(rvp->bcn_mbuf);
2777
2778 rvp->bcn_mbuf = m;
2779
2780 return (rum_set_beacon(sc, vap));
2781 }
2782
2783 static void
rum_update_beacon_cb(struct rum_softc * sc,union sec_param * data,uint8_t rvp_id)2784 rum_update_beacon_cb(struct rum_softc *sc, union sec_param *data,
2785 uint8_t rvp_id)
2786 {
2787 struct ieee80211vap *vap = data->vap;
2788
2789 rum_set_beacon(sc, vap);
2790 }
2791
2792 static void
rum_update_beacon(struct ieee80211vap * vap,int item)2793 rum_update_beacon(struct ieee80211vap *vap, int item)
2794 {
2795 struct ieee80211com *ic = vap->iv_ic;
2796 struct rum_softc *sc = ic->ic_softc;
2797 struct rum_vap *rvp = RUM_VAP(vap);
2798 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off;
2799 struct ieee80211_node *ni = vap->iv_bss;
2800 struct mbuf *m = rvp->bcn_mbuf;
2801 int mcast = 0;
2802
2803 RUM_LOCK(sc);
2804 if (m == NULL) {
2805 m = ieee80211_beacon_alloc(ni);
2806 if (m == NULL) {
2807 device_printf(sc->sc_dev,
2808 "%s: could not allocate beacon frame\n", __func__);
2809 RUM_UNLOCK(sc);
2810 return;
2811 }
2812 rvp->bcn_mbuf = m;
2813 }
2814
2815 switch (item) {
2816 case IEEE80211_BEACON_ERP:
2817 rum_update_slot(ic);
2818 break;
2819 case IEEE80211_BEACON_TIM:
2820 mcast = 1; /*TODO*/
2821 break;
2822 default:
2823 break;
2824 }
2825 RUM_UNLOCK(sc);
2826
2827 setbit(bo->bo_flags, item);
2828 ieee80211_beacon_update(ni, m, mcast);
2829
2830 rum_cmd_sleepable(sc, &vap, sizeof(vap), 0, rum_update_beacon_cb);
2831 }
2832
2833 static int
rum_common_key_set(struct rum_softc * sc,struct ieee80211_key * k,uint16_t base)2834 rum_common_key_set(struct rum_softc *sc, struct ieee80211_key *k,
2835 uint16_t base)
2836 {
2837
2838 if (rum_write_multi(sc, base, k->wk_key, k->wk_keylen))
2839 return EIO;
2840
2841 if (k->wk_cipher->ic_cipher == IEEE80211_CIPHER_TKIP) {
2842 if (rum_write_multi(sc, base + IEEE80211_KEYBUF_SIZE,
2843 k->wk_txmic, 8))
2844 return EIO;
2845 if (rum_write_multi(sc, base + IEEE80211_KEYBUF_SIZE + 8,
2846 k->wk_rxmic, 8))
2847 return EIO;
2848 }
2849
2850 return 0;
2851 }
2852
2853 static void
rum_group_key_set_cb(struct rum_softc * sc,union sec_param * data,uint8_t rvp_id)2854 rum_group_key_set_cb(struct rum_softc *sc, union sec_param *data,
2855 uint8_t rvp_id)
2856 {
2857 struct ieee80211_key *k = &data->key;
2858 uint8_t mode;
2859
2860 if (sc->sc_clr_shkeys == 0) {
2861 rum_clr_shkey_regs(sc);
2862 sc->sc_clr_shkeys = 1;
2863 }
2864
2865 mode = rum_crypto_mode(sc, k->wk_cipher->ic_cipher, k->wk_keylen);
2866 if (mode == 0)
2867 goto print_err;
2868
2869 DPRINTFN(1, "setting group key %d for vap %d, mode %d "
2870 "(tx %s, rx %s)\n", k->wk_keyix, rvp_id, mode,
2871 (k->wk_flags & IEEE80211_KEY_XMIT) ? "on" : "off",
2872 (k->wk_flags & IEEE80211_KEY_RECV) ? "on" : "off");
2873
2874 /* Install the key. */
2875 if (rum_common_key_set(sc, k, RT2573_SKEY(rvp_id, k->wk_keyix)) != 0)
2876 goto print_err;
2877
2878 /* Set cipher mode. */
2879 if (rum_modbits(sc, rvp_id < 2 ? RT2573_SEC_CSR1 : RT2573_SEC_CSR5,
2880 mode << (rvp_id % 2 + k->wk_keyix) * RT2573_SKEY_MAX,
2881 RT2573_MODE_MASK << (rvp_id % 2 + k->wk_keyix) * RT2573_SKEY_MAX)
2882 != 0)
2883 goto print_err;
2884
2885 /* Mark this key as valid. */
2886 if (rum_setbits(sc, RT2573_SEC_CSR0,
2887 1 << (rvp_id * RT2573_SKEY_MAX + k->wk_keyix)) != 0)
2888 goto print_err;
2889
2890 return;
2891
2892 print_err:
2893 device_printf(sc->sc_dev, "%s: cannot set group key %d for vap %d\n",
2894 __func__, k->wk_keyix, rvp_id);
2895 }
2896
2897 static void
rum_group_key_del_cb(struct rum_softc * sc,union sec_param * data,uint8_t rvp_id)2898 rum_group_key_del_cb(struct rum_softc *sc, union sec_param *data,
2899 uint8_t rvp_id)
2900 {
2901 struct ieee80211_key *k = &data->key;
2902
2903 DPRINTF("%s: removing group key %d for vap %d\n", __func__,
2904 k->wk_keyix, rvp_id);
2905 rum_clrbits(sc,
2906 rvp_id < 2 ? RT2573_SEC_CSR1 : RT2573_SEC_CSR5,
2907 RT2573_MODE_MASK << (rvp_id % 2 + k->wk_keyix) * RT2573_SKEY_MAX);
2908 rum_clrbits(sc, RT2573_SEC_CSR0,
2909 rvp_id * RT2573_SKEY_MAX + k->wk_keyix);
2910 }
2911
2912 static void
rum_pair_key_set_cb(struct rum_softc * sc,union sec_param * data,uint8_t rvp_id)2913 rum_pair_key_set_cb(struct rum_softc *sc, union sec_param *data,
2914 uint8_t rvp_id)
2915 {
2916 struct ieee80211_key *k = &data->key;
2917 uint8_t buf[IEEE80211_ADDR_LEN + 1];
2918 uint8_t mode;
2919
2920 mode = rum_crypto_mode(sc, k->wk_cipher->ic_cipher, k->wk_keylen);
2921 if (mode == 0)
2922 goto print_err;
2923
2924 DPRINTFN(1, "setting pairwise key %d for vap %d, mode %d "
2925 "(tx %s, rx %s)\n", k->wk_keyix, rvp_id, mode,
2926 (k->wk_flags & IEEE80211_KEY_XMIT) ? "on" : "off",
2927 (k->wk_flags & IEEE80211_KEY_RECV) ? "on" : "off");
2928
2929 /* Install the key. */
2930 if (rum_common_key_set(sc, k, RT2573_PKEY(k->wk_keyix)) != 0)
2931 goto print_err;
2932
2933 IEEE80211_ADDR_COPY(buf, k->wk_macaddr);
2934 buf[IEEE80211_ADDR_LEN] = mode;
2935
2936 /* Set transmitter address and cipher mode. */
2937 if (rum_write_multi(sc, RT2573_ADDR_ENTRY(k->wk_keyix),
2938 buf, sizeof buf) != 0)
2939 goto print_err;
2940
2941 /* Enable key table lookup for this vap. */
2942 if (sc->vap_key_count[rvp_id]++ == 0)
2943 if (rum_setbits(sc, RT2573_SEC_CSR4, 1 << rvp_id) != 0)
2944 goto print_err;
2945
2946 /* Mark this key as valid. */
2947 if (rum_setbits(sc,
2948 k->wk_keyix < 32 ? RT2573_SEC_CSR2 : RT2573_SEC_CSR3,
2949 1 << (k->wk_keyix % 32)) != 0)
2950 goto print_err;
2951
2952 return;
2953
2954 print_err:
2955 device_printf(sc->sc_dev,
2956 "%s: cannot set pairwise key %d, vap %d\n", __func__, k->wk_keyix,
2957 rvp_id);
2958 }
2959
2960 static void
rum_pair_key_del_cb(struct rum_softc * sc,union sec_param * data,uint8_t rvp_id)2961 rum_pair_key_del_cb(struct rum_softc *sc, union sec_param *data,
2962 uint8_t rvp_id)
2963 {
2964 struct ieee80211_key *k = &data->key;
2965
2966 DPRINTF("%s: removing key %d\n", __func__, k->wk_keyix);
2967 rum_clrbits(sc, (k->wk_keyix < 32) ? RT2573_SEC_CSR2 : RT2573_SEC_CSR3,
2968 1 << (k->wk_keyix % 32));
2969 sc->keys_bmap &= ~(1ULL << k->wk_keyix);
2970 if (--sc->vap_key_count[rvp_id] == 0)
2971 rum_clrbits(sc, RT2573_SEC_CSR4, 1 << rvp_id);
2972 }
2973
2974 static int
rum_key_alloc(struct ieee80211vap * vap,struct ieee80211_key * k,ieee80211_keyix * keyix,ieee80211_keyix * rxkeyix)2975 rum_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k,
2976 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix)
2977 {
2978 struct rum_softc *sc = vap->iv_ic->ic_softc;
2979 uint8_t i;
2980
2981 if (!(&vap->iv_nw_keys[0] <= k &&
2982 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID])) {
2983 if (!(k->wk_flags & IEEE80211_KEY_SWCRYPT)) {
2984 RUM_LOCK(sc);
2985 for (i = 0; i < RT2573_ADDR_MAX; i++) {
2986 if ((sc->keys_bmap & (1ULL << i)) == 0) {
2987 sc->keys_bmap |= (1ULL << i);
2988 *keyix = i;
2989 break;
2990 }
2991 }
2992 RUM_UNLOCK(sc);
2993 if (i == RT2573_ADDR_MAX) {
2994 device_printf(sc->sc_dev,
2995 "%s: no free space in the key table\n",
2996 __func__);
2997 return 0;
2998 }
2999 } else
3000 *keyix = 0;
3001 } else {
3002 *keyix = k - vap->iv_nw_keys;
3003 }
3004 *rxkeyix = *keyix;
3005 return 1;
3006 }
3007
3008 static int
rum_key_set(struct ieee80211vap * vap,const struct ieee80211_key * k)3009 rum_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
3010 {
3011 struct rum_softc *sc = vap->iv_ic->ic_softc;
3012 int group;
3013
3014 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) {
3015 /* Not for us. */
3016 return 1;
3017 }
3018
3019 group = k >= &vap->iv_nw_keys[0] && k < &vap->iv_nw_keys[IEEE80211_WEP_NKID];
3020
3021 return !rum_cmd_sleepable(sc, k, sizeof(*k), 0,
3022 group ? rum_group_key_set_cb : rum_pair_key_set_cb);
3023 }
3024
3025 static int
rum_key_delete(struct ieee80211vap * vap,const struct ieee80211_key * k)3026 rum_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
3027 {
3028 struct rum_softc *sc = vap->iv_ic->ic_softc;
3029 int group;
3030
3031 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) {
3032 /* Not for us. */
3033 return 1;
3034 }
3035
3036 group = k >= &vap->iv_nw_keys[0] && k < &vap->iv_nw_keys[IEEE80211_WEP_NKID];
3037
3038 return !rum_cmd_sleepable(sc, k, sizeof(*k), 0,
3039 group ? rum_group_key_del_cb : rum_pair_key_del_cb);
3040 }
3041
3042 static int
rum_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)3043 rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
3044 const struct ieee80211_bpf_params *params)
3045 {
3046 struct rum_softc *sc = ni->ni_ic->ic_softc;
3047 int ret;
3048
3049 RUM_LOCK(sc);
3050 /* prevent management frames from being sent if we're not ready */
3051 if (!sc->sc_running) {
3052 ret = ENETDOWN;
3053 goto bad;
3054 }
3055 if (sc->tx_nfree < RUM_TX_MINFREE) {
3056 ret = EIO;
3057 goto bad;
3058 }
3059
3060 if (params == NULL) {
3061 /*
3062 * Legacy path; interpret frame contents to decide
3063 * precisely how to send the frame.
3064 */
3065 if ((ret = rum_tx_mgt(sc, m, ni)) != 0)
3066 goto bad;
3067 } else {
3068 /*
3069 * Caller supplied explicit parameters to use in
3070 * sending the frame.
3071 */
3072 if ((ret = rum_tx_raw(sc, m, ni, params)) != 0)
3073 goto bad;
3074 }
3075 RUM_UNLOCK(sc);
3076
3077 return 0;
3078 bad:
3079 RUM_UNLOCK(sc);
3080 m_freem(m);
3081 return ret;
3082 }
3083
3084 static void
rum_ratectl_start(struct rum_softc * sc,struct ieee80211_node * ni)3085 rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni)
3086 {
3087 struct ieee80211vap *vap = ni->ni_vap;
3088 struct rum_vap *rvp = RUM_VAP(vap);
3089
3090 /* clear statistic registers (STA_CSR0 to STA_CSR5) */
3091 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta);
3092
3093 usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
3094 }
3095
3096 static void
rum_ratectl_timeout(void * arg)3097 rum_ratectl_timeout(void *arg)
3098 {
3099 struct rum_vap *rvp = arg;
3100 struct ieee80211vap *vap = &rvp->vap;
3101 struct ieee80211com *ic = vap->iv_ic;
3102
3103 ieee80211_runtask(ic, &rvp->ratectl_task);
3104 }
3105
3106 static void
rum_ratectl_task(void * arg,int pending)3107 rum_ratectl_task(void *arg, int pending)
3108 {
3109 struct rum_vap *rvp = arg;
3110 struct ieee80211vap *vap = &rvp->vap;
3111 struct rum_softc *sc = vap->iv_ic->ic_softc;
3112 struct ieee80211_node *ni;
3113 int ok[3], fail;
3114 int sum, success, retrycnt;
3115
3116 RUM_LOCK(sc);
3117 /* read and clear statistic registers (STA_CSR0 to STA_CSR5) */
3118 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta));
3119
3120 ok[0] = (le32toh(sc->sta[4]) & 0xffff); /* TX ok w/o retry */
3121 ok[1] = (le32toh(sc->sta[4]) >> 16); /* TX ok w/ one retry */
3122 ok[2] = (le32toh(sc->sta[5]) & 0xffff); /* TX ok w/ multiple retries */
3123 fail = (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */
3124
3125 success = ok[0] + ok[1] + ok[2];
3126 sum = success + fail;
3127 /* XXX at least */
3128 retrycnt = ok[1] + ok[2] * 2 + fail * (rvp->maxretry + 1);
3129
3130 if (sum != 0) {
3131 ni = ieee80211_ref_node(vap->iv_bss);
3132 ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt);
3133 (void) ieee80211_ratectl_rate(ni, NULL, 0);
3134 ieee80211_free_node(ni);
3135 }
3136
3137 /* count TX retry-fail as Tx errors */
3138 if_inc_counter(vap->iv_ifp, IFCOUNTER_OERRORS, fail);
3139
3140 usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp);
3141 RUM_UNLOCK(sc);
3142 }
3143
3144 static void
rum_scan_start(struct ieee80211com * ic)3145 rum_scan_start(struct ieee80211com *ic)
3146 {
3147 struct rum_softc *sc = ic->ic_softc;
3148
3149 RUM_LOCK(sc);
3150 rum_abort_tsf_sync(sc);
3151 rum_set_bssid(sc, ieee80211broadcastaddr);
3152 RUM_UNLOCK(sc);
3153
3154 }
3155
3156 static void
rum_scan_end(struct ieee80211com * ic)3157 rum_scan_end(struct ieee80211com *ic)
3158 {
3159 struct rum_softc *sc = ic->ic_softc;
3160
3161 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
3162 RUM_LOCK(sc);
3163 if (ic->ic_opmode != IEEE80211_M_AHDEMO)
3164 rum_enable_tsf_sync(sc);
3165 else
3166 rum_enable_tsf(sc);
3167 rum_set_bssid(sc, sc->sc_bssid);
3168 RUM_UNLOCK(sc);
3169 }
3170 }
3171
3172 static void
rum_set_channel(struct ieee80211com * ic)3173 rum_set_channel(struct ieee80211com *ic)
3174 {
3175 struct rum_softc *sc = ic->ic_softc;
3176
3177 RUM_LOCK(sc);
3178 rum_set_chan(sc, ic->ic_curchan);
3179 RUM_UNLOCK(sc);
3180 }
3181
3182 static void
rum_getradiocaps(struct ieee80211com * ic,int maxchans,int * nchans,struct ieee80211_channel chans[])3183 rum_getradiocaps(struct ieee80211com *ic,
3184 int maxchans, int *nchans, struct ieee80211_channel chans[])
3185 {
3186 struct rum_softc *sc = ic->ic_softc;
3187 uint8_t bands[IEEE80211_MODE_BYTES];
3188
3189 memset(bands, 0, sizeof(bands));
3190 setbit(bands, IEEE80211_MODE_11B);
3191 setbit(bands, IEEE80211_MODE_11G);
3192 ieee80211_add_channel_list_2ghz(chans, maxchans, nchans,
3193 rum_chan_2ghz, nitems(rum_chan_2ghz), bands, 0);
3194
3195 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) {
3196 setbit(bands, IEEE80211_MODE_11A);
3197 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3198 rum_chan_5ghz, nitems(rum_chan_5ghz), bands, 0);
3199 }
3200 }
3201
3202 static int
rum_get_rssi(struct rum_softc * sc,uint8_t raw)3203 rum_get_rssi(struct rum_softc *sc, uint8_t raw)
3204 {
3205 struct ieee80211com *ic = &sc->sc_ic;
3206 int lna, agc, rssi;
3207
3208 lna = (raw >> 5) & 0x3;
3209 agc = raw & 0x1f;
3210
3211 if (lna == 0) {
3212 /*
3213 * No RSSI mapping
3214 *
3215 * NB: Since RSSI is relative to noise floor, -1 is
3216 * adequate for caller to know error happened.
3217 */
3218 return -1;
3219 }
3220
3221 rssi = (2 * agc) - RT2573_NOISE_FLOOR;
3222
3223 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
3224 rssi += sc->rssi_2ghz_corr;
3225
3226 if (lna == 1)
3227 rssi -= 64;
3228 else if (lna == 2)
3229 rssi -= 74;
3230 else if (lna == 3)
3231 rssi -= 90;
3232 } else {
3233 rssi += sc->rssi_5ghz_corr;
3234
3235 if (!sc->ext_5ghz_lna && lna != 1)
3236 rssi += 4;
3237
3238 if (lna == 1)
3239 rssi -= 64;
3240 else if (lna == 2)
3241 rssi -= 86;
3242 else if (lna == 3)
3243 rssi -= 100;
3244 }
3245 return rssi;
3246 }
3247
3248 static int
rum_pause(struct rum_softc * sc,int timeout)3249 rum_pause(struct rum_softc *sc, int timeout)
3250 {
3251
3252 usb_pause_mtx(&sc->sc_lock, timeout);
3253 return (0);
3254 }
3255
3256 static device_method_t rum_methods[] = {
3257 /* Device interface */
3258 DEVMETHOD(device_probe, rum_match),
3259 DEVMETHOD(device_attach, rum_attach),
3260 DEVMETHOD(device_detach, rum_detach),
3261 DEVMETHOD_END
3262 };
3263
3264 static driver_t rum_driver = {
3265 .name = "rum",
3266 .methods = rum_methods,
3267 .size = sizeof(struct rum_softc),
3268 };
3269
3270 static devclass_t rum_devclass;
3271
3272 DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, NULL);
3273 MODULE_DEPEND(rum, wlan, 1, 1, 1);
3274 MODULE_DEPEND(rum, usb, 1, 1, 1);
3275 MODULE_VERSION(rum, 1);
3276 #if 0 /* Not implemented by DragonFly */
3277 USB_PNP_HOST_INFO(rum_devs);
3278 #endif
3279