1 /* $OpenBSD: if_rsu.c,v 1.17 2013/04/15 09:23:01 mglocker Exp $ */
2
3 /*-
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 #include <sys/cdefs.h>
19 __FBSDID("$FreeBSD$");
20
21 /*
22 * Driver for Realtek RTL8188SU/RTL8191SU/RTL8192SU.
23 *
24 * TODO:
25 * o tx a-mpdu
26 * o hostap / ibss / mesh
27 * o power-save operation
28 */
29
30 #include "opt_wlan.h"
31
32 #include <sys/param.h>
33 #include <sys/endian.h>
34 #include <sys/sockio.h>
35 #include <sys/malloc.h>
36 #include <sys/mbuf.h>
37 #include <sys/kernel.h>
38 #include <sys/socket.h>
39 #include <sys/systm.h>
40 #include <sys/conf.h>
41 #include <sys/bus.h>
42 #include <sys/firmware.h>
43 #include <sys/module.h>
44
45 #include <net/bpf.h>
46 #include <net/if.h>
47 #include <net/if_var.h>
48 #include <net/if_arp.h>
49 #include <net/if_dl.h>
50 #include <net/if_media.h>
51 #include <net/if_types.h>
52
53 #include <netinet/in.h>
54 #include <netinet/in_systm.h>
55 #include <netinet/in_var.h>
56 #include <netinet/if_ether.h>
57 #include <netinet/ip.h>
58
59 #include <net80211/ieee80211_var.h>
60 #include <net80211/ieee80211_regdomain.h>
61 #include <net80211/ieee80211_radiotap.h>
62
63 #include <dev/usb/usb.h>
64 #include <dev/usb/usbdi.h>
65 #include "usbdevs.h"
66
67 #include <dev/rtwn/if_rtwn_ridx.h> /* XXX */
68 #include <dev/usb/wlan/if_rsureg.h>
69
70 #define RSU_RATE_IS_CCK RTWN_RATE_IS_CCK
71
72 #ifdef USB_DEBUG
73 static int rsu_debug = 0;
74 SYSCTL_NODE(_hw_usb, OID_AUTO, rsu, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
75 "USB rsu");
76 SYSCTL_INT(_hw_usb_rsu, OID_AUTO, debug, CTLFLAG_RWTUN, &rsu_debug, 0,
77 "Debug level");
78 #define RSU_DPRINTF(_sc, _flg, ...) \
79 do \
80 if (((_flg) == (RSU_DEBUG_ANY)) || (rsu_debug & (_flg))) \
81 device_printf((_sc)->sc_dev, __VA_ARGS__); \
82 while (0)
83 #else
84 #define RSU_DPRINTF(_sc, _flg, ...)
85 #endif
86
87 static int rsu_enable_11n = 1;
88 TUNABLE_INT("hw.usb.rsu.enable_11n", &rsu_enable_11n);
89
90 #define RSU_DEBUG_ANY 0xffffffff
91 #define RSU_DEBUG_TX 0x00000001
92 #define RSU_DEBUG_RX 0x00000002
93 #define RSU_DEBUG_RESET 0x00000004
94 #define RSU_DEBUG_CALIB 0x00000008
95 #define RSU_DEBUG_STATE 0x00000010
96 #define RSU_DEBUG_SCAN 0x00000020
97 #define RSU_DEBUG_FWCMD 0x00000040
98 #define RSU_DEBUG_TXDONE 0x00000080
99 #define RSU_DEBUG_FW 0x00000100
100 #define RSU_DEBUG_FWDBG 0x00000200
101 #define RSU_DEBUG_AMPDU 0x00000400
102 #define RSU_DEBUG_KEY 0x00000800
103 #define RSU_DEBUG_USB 0x00001000
104
105 static const STRUCT_USB_HOST_ID rsu_devs[] = {
106 #define RSU_HT_NOT_SUPPORTED 0
107 #define RSU_HT_SUPPORTED 1
108 #define RSU_DEV_HT(v,p) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, \
109 RSU_HT_SUPPORTED) }
110 #define RSU_DEV(v,p) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, \
111 RSU_HT_NOT_SUPPORTED) }
112 RSU_DEV(ASUS, RTL8192SU),
113 RSU_DEV(AZUREWAVE, RTL8192SU_4),
114 RSU_DEV(SITECOMEU, WLA1000),
115 RSU_DEV_HT(ACCTON, RTL8192SU),
116 RSU_DEV_HT(ASUS, USBN10),
117 RSU_DEV_HT(AZUREWAVE, RTL8192SU_1),
118 RSU_DEV_HT(AZUREWAVE, RTL8192SU_2),
119 RSU_DEV_HT(AZUREWAVE, RTL8192SU_3),
120 RSU_DEV_HT(AZUREWAVE, RTL8192SU_5),
121 RSU_DEV_HT(BELKIN, RTL8192SU_1),
122 RSU_DEV_HT(BELKIN, RTL8192SU_2),
123 RSU_DEV_HT(BELKIN, RTL8192SU_3),
124 RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_1),
125 RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_2),
126 RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_3),
127 RSU_DEV_HT(COREGA, RTL8192SU),
128 RSU_DEV_HT(DLINK2, DWA131A1),
129 RSU_DEV_HT(DLINK2, RTL8192SU_1),
130 RSU_DEV_HT(DLINK2, RTL8192SU_2),
131 RSU_DEV_HT(EDIMAX, RTL8192SU_1),
132 RSU_DEV_HT(EDIMAX, RTL8192SU_2),
133 RSU_DEV_HT(EDIMAX, EW7622UMN),
134 RSU_DEV_HT(GUILLEMOT, HWGUN54),
135 RSU_DEV_HT(GUILLEMOT, HWNUM300),
136 RSU_DEV_HT(HAWKING, RTL8192SU_1),
137 RSU_DEV_HT(HAWKING, RTL8192SU_2),
138 RSU_DEV_HT(PLANEX2, GWUSNANO),
139 RSU_DEV_HT(REALTEK, RTL8171),
140 RSU_DEV_HT(REALTEK, RTL8172),
141 RSU_DEV_HT(REALTEK, RTL8173),
142 RSU_DEV_HT(REALTEK, RTL8174),
143 RSU_DEV_HT(REALTEK, RTL8192SU),
144 RSU_DEV_HT(REALTEK, RTL8712),
145 RSU_DEV_HT(REALTEK, RTL8713),
146 RSU_DEV_HT(SENAO, RTL8192SU_1),
147 RSU_DEV_HT(SENAO, RTL8192SU_2),
148 RSU_DEV_HT(SITECOMEU, WL349V1),
149 RSU_DEV_HT(SITECOMEU, WL353),
150 RSU_DEV_HT(SWEEX2, LW154),
151 RSU_DEV_HT(TRENDNET, TEW646UBH),
152 #undef RSU_DEV_HT
153 #undef RSU_DEV
154 };
155
156 static device_probe_t rsu_match;
157 static device_attach_t rsu_attach;
158 static device_detach_t rsu_detach;
159 static usb_callback_t rsu_bulk_tx_callback_be_bk;
160 static usb_callback_t rsu_bulk_tx_callback_vi_vo;
161 static usb_callback_t rsu_bulk_tx_callback_h2c;
162 static usb_callback_t rsu_bulk_rx_callback;
163 static usb_error_t rsu_do_request(struct rsu_softc *,
164 struct usb_device_request *, void *);
165 static struct ieee80211vap *
166 rsu_vap_create(struct ieee80211com *, const char name[IFNAMSIZ],
167 int, enum ieee80211_opmode, int,
168 const uint8_t bssid[IEEE80211_ADDR_LEN],
169 const uint8_t mac[IEEE80211_ADDR_LEN]);
170 static void rsu_vap_delete(struct ieee80211vap *);
171 static void rsu_scan_start(struct ieee80211com *);
172 static void rsu_scan_end(struct ieee80211com *);
173 static void rsu_getradiocaps(struct ieee80211com *, int, int *,
174 struct ieee80211_channel[]);
175 static void rsu_set_channel(struct ieee80211com *);
176 static void rsu_scan_curchan(struct ieee80211_scan_state *, unsigned long);
177 static void rsu_scan_mindwell(struct ieee80211_scan_state *);
178 static void rsu_update_promisc(struct ieee80211com *);
179 static uint8_t rsu_get_multi_pos(const uint8_t[]);
180 static void rsu_set_multi(struct rsu_softc *);
181 static void rsu_update_mcast(struct ieee80211com *);
182 static int rsu_alloc_rx_list(struct rsu_softc *);
183 static void rsu_free_rx_list(struct rsu_softc *);
184 static int rsu_alloc_tx_list(struct rsu_softc *);
185 static void rsu_free_tx_list(struct rsu_softc *);
186 static void rsu_free_list(struct rsu_softc *, struct rsu_data [], int);
187 static struct rsu_data *_rsu_getbuf(struct rsu_softc *);
188 static struct rsu_data *rsu_getbuf(struct rsu_softc *);
189 static void rsu_freebuf(struct rsu_softc *, struct rsu_data *);
190 static int rsu_write_region_1(struct rsu_softc *, uint16_t, uint8_t *,
191 int);
192 static void rsu_write_1(struct rsu_softc *, uint16_t, uint8_t);
193 static void rsu_write_2(struct rsu_softc *, uint16_t, uint16_t);
194 static void rsu_write_4(struct rsu_softc *, uint16_t, uint32_t);
195 static int rsu_read_region_1(struct rsu_softc *, uint16_t, uint8_t *,
196 int);
197 static uint8_t rsu_read_1(struct rsu_softc *, uint16_t);
198 static uint16_t rsu_read_2(struct rsu_softc *, uint16_t);
199 static uint32_t rsu_read_4(struct rsu_softc *, uint16_t);
200 static int rsu_fw_iocmd(struct rsu_softc *, uint32_t);
201 static uint8_t rsu_efuse_read_1(struct rsu_softc *, uint16_t);
202 static int rsu_read_rom(struct rsu_softc *);
203 static int rsu_fw_cmd(struct rsu_softc *, uint8_t, void *, int);
204 static void rsu_calib_task(void *, int);
205 static void rsu_tx_task(void *, int);
206 static void rsu_set_led(struct rsu_softc *, int);
207 static int rsu_monitor_newstate(struct ieee80211vap *,
208 enum ieee80211_state, int);
209 static int rsu_newstate(struct ieee80211vap *, enum ieee80211_state, int);
210 static int rsu_key_alloc(struct ieee80211vap *, struct ieee80211_key *,
211 ieee80211_keyix *, ieee80211_keyix *);
212 static int rsu_process_key(struct ieee80211vap *,
213 const struct ieee80211_key *, int);
214 static int rsu_key_set(struct ieee80211vap *,
215 const struct ieee80211_key *);
216 static int rsu_key_delete(struct ieee80211vap *,
217 const struct ieee80211_key *);
218 static int rsu_cam_read(struct rsu_softc *, uint8_t, uint32_t *);
219 static void rsu_cam_write(struct rsu_softc *, uint8_t, uint32_t);
220 static int rsu_key_check(struct rsu_softc *, ieee80211_keyix, int);
221 static uint8_t rsu_crypto_mode(struct rsu_softc *, u_int, int);
222 static int rsu_set_key_group(struct rsu_softc *,
223 const struct ieee80211_key *);
224 static int rsu_set_key_pair(struct rsu_softc *,
225 const struct ieee80211_key *);
226 static int rsu_reinit_static_keys(struct rsu_softc *);
227 static int rsu_delete_key(struct rsu_softc *sc, ieee80211_keyix);
228 static void rsu_delete_key_pair_cb(void *, int);
229 static int rsu_site_survey(struct rsu_softc *,
230 struct ieee80211_scan_ssid *);
231 static int rsu_join_bss(struct rsu_softc *, struct ieee80211_node *);
232 static int rsu_disconnect(struct rsu_softc *);
233 static int rsu_hwrssi_to_rssi(struct rsu_softc *, int hw_rssi);
234 static void rsu_event_survey(struct rsu_softc *, uint8_t *, int);
235 static void rsu_event_join_bss(struct rsu_softc *, uint8_t *, int);
236 static void rsu_rx_event(struct rsu_softc *, uint8_t, uint8_t *, int);
237 static void rsu_rx_multi_event(struct rsu_softc *, uint8_t *, int);
238 static int8_t rsu_get_rssi(struct rsu_softc *, int, void *);
239 static struct mbuf * rsu_rx_copy_to_mbuf(struct rsu_softc *,
240 struct r92s_rx_stat *, int);
241 static uint32_t rsu_get_tsf_low(struct rsu_softc *);
242 static uint32_t rsu_get_tsf_high(struct rsu_softc *);
243 static struct ieee80211_node * rsu_rx_frame(struct rsu_softc *, struct mbuf *);
244 static struct mbuf * rsu_rx_multi_frame(struct rsu_softc *, uint8_t *, int);
245 static struct mbuf *
246 rsu_rxeof(struct usb_xfer *, struct rsu_data *);
247 static void rsu_txeof(struct usb_xfer *, struct rsu_data *);
248 static int rsu_raw_xmit(struct ieee80211_node *, struct mbuf *,
249 const struct ieee80211_bpf_params *);
250 static void rsu_rxfilter_init(struct rsu_softc *);
251 static void rsu_rxfilter_set(struct rsu_softc *, uint32_t, uint32_t);
252 static void rsu_rxfilter_refresh(struct rsu_softc *);
253 static int rsu_init(struct rsu_softc *);
254 static int rsu_tx_start(struct rsu_softc *, struct ieee80211_node *,
255 struct mbuf *, struct rsu_data *);
256 static int rsu_transmit(struct ieee80211com *, struct mbuf *);
257 static void rsu_start(struct rsu_softc *);
258 static void _rsu_start(struct rsu_softc *);
259 static int rsu_ioctl_net(struct ieee80211com *, u_long, void *);
260 static void rsu_parent(struct ieee80211com *);
261 static void rsu_stop(struct rsu_softc *);
262 static void rsu_ms_delay(struct rsu_softc *, int);
263
264 static device_method_t rsu_methods[] = {
265 DEVMETHOD(device_probe, rsu_match),
266 DEVMETHOD(device_attach, rsu_attach),
267 DEVMETHOD(device_detach, rsu_detach),
268
269 DEVMETHOD_END
270 };
271
272 static driver_t rsu_driver = {
273 .name = "rsu",
274 .methods = rsu_methods,
275 .size = sizeof(struct rsu_softc)
276 };
277
278 DRIVER_MODULE(rsu, uhub, rsu_driver, NULL, NULL);
279 MODULE_DEPEND(rsu, wlan, 1, 1, 1);
280 MODULE_DEPEND(rsu, usb, 1, 1, 1);
281 MODULE_DEPEND(rsu, firmware, 1, 1, 1);
282 MODULE_VERSION(rsu, 1);
283 USB_PNP_HOST_INFO(rsu_devs);
284
285 static uint8_t rsu_wme_ac_xfer_map[4] = {
286 [WME_AC_BE] = RSU_BULK_TX_BE_BK,
287 [WME_AC_BK] = RSU_BULK_TX_BE_BK,
288 [WME_AC_VI] = RSU_BULK_TX_VI_VO,
289 [WME_AC_VO] = RSU_BULK_TX_VI_VO,
290 };
291
292 /* XXX hard-coded */
293 #define RSU_H2C_ENDPOINT 3
294
295 static const struct usb_config rsu_config[RSU_N_TRANSFER] = {
296 [RSU_BULK_RX] = {
297 .type = UE_BULK,
298 .endpoint = UE_ADDR_ANY,
299 .direction = UE_DIR_IN,
300 .bufsize = RSU_RXBUFSZ,
301 .flags = {
302 .pipe_bof = 1,
303 .short_xfer_ok = 1
304 },
305 .callback = rsu_bulk_rx_callback
306 },
307 [RSU_BULK_TX_BE_BK] = {
308 .type = UE_BULK,
309 .endpoint = 0x06,
310 .direction = UE_DIR_OUT,
311 .bufsize = RSU_TXBUFSZ,
312 .flags = {
313 .ext_buffer = 1,
314 .pipe_bof = 1,
315 .force_short_xfer = 1
316 },
317 .callback = rsu_bulk_tx_callback_be_bk,
318 .timeout = RSU_TX_TIMEOUT
319 },
320 [RSU_BULK_TX_VI_VO] = {
321 .type = UE_BULK,
322 .endpoint = 0x04,
323 .direction = UE_DIR_OUT,
324 .bufsize = RSU_TXBUFSZ,
325 .flags = {
326 .ext_buffer = 1,
327 .pipe_bof = 1,
328 .force_short_xfer = 1
329 },
330 .callback = rsu_bulk_tx_callback_vi_vo,
331 .timeout = RSU_TX_TIMEOUT
332 },
333 [RSU_BULK_TX_H2C] = {
334 .type = UE_BULK,
335 .endpoint = 0x0d,
336 .direction = UE_DIR_OUT,
337 .bufsize = RSU_TXBUFSZ,
338 .flags = {
339 .ext_buffer = 1,
340 .pipe_bof = 1,
341 .short_xfer_ok = 1
342 },
343 .callback = rsu_bulk_tx_callback_h2c,
344 .timeout = RSU_TX_TIMEOUT
345 },
346 };
347
348 static int
349 rsu_match(device_t self)
350 {
351 struct usb_attach_arg *uaa = device_get_ivars(self);
352
353 if (uaa->usb_mode != USB_MODE_HOST ||
354 uaa->info.bIfaceIndex != 0 ||
355 uaa->info.bConfigIndex != 0)
356 return (ENXIO);
357
358 return (usbd_lookup_id_by_uaa(rsu_devs, sizeof(rsu_devs), uaa));
359 }
360
361 static int
362 rsu_send_mgmt(struct ieee80211_node *ni, int type, int arg)
363 {
364
365 return (ENOTSUP);
366 }
367
368 static void
369 rsu_update_chw(struct ieee80211com *ic)
370 {
371
372 }
373
374 /*
375 * notification from net80211 that it'd like to do A-MPDU on the given TID.
376 *
377 * Note: this actually hangs traffic at the present moment, so don't use it.
378 * The firmware debug does indiciate it's sending and establishing a TX AMPDU
379 * session, but then no traffic flows.
380 */
381 static int
382 rsu_ampdu_enable(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
383 {
384 #if 0
385 struct rsu_softc *sc = ni->ni_ic->ic_softc;
386 struct r92s_add_ba_req req;
387
388 /* Don't enable if it's requested or running */
389 if (IEEE80211_AMPDU_REQUESTED(tap))
390 return (0);
391 if (IEEE80211_AMPDU_RUNNING(tap))
392 return (0);
393
394 /* We've decided to send addba; so send it */
395 req.tid = htole32(tap->txa_tid);
396
397 /* Attempt net80211 state */
398 if (ieee80211_ampdu_tx_request_ext(ni, tap->txa_tid) != 1)
399 return (0);
400
401 /* Send the firmware command */
402 RSU_DPRINTF(sc, RSU_DEBUG_AMPDU, "%s: establishing AMPDU TX for TID %d\n",
403 __func__,
404 tap->txa_tid);
405
406 RSU_LOCK(sc);
407 if (rsu_fw_cmd(sc, R92S_CMD_ADDBA_REQ, &req, sizeof(req)) != 1) {
408 RSU_UNLOCK(sc);
409 /* Mark failure */
410 (void) ieee80211_ampdu_tx_request_active_ext(ni, tap->txa_tid, 0);
411 return (0);
412 }
413 RSU_UNLOCK(sc);
414
415 /* Mark success; we don't get any further notifications */
416 (void) ieee80211_ampdu_tx_request_active_ext(ni, tap->txa_tid, 1);
417 #endif
418 /* Return 0, we're driving this ourselves */
419 return (0);
420 }
421
422 static int
423 rsu_wme_update(struct ieee80211com *ic)
424 {
425
426 /* Firmware handles this; not our problem */
427 return (0);
428 }
429
430 static int
431 rsu_attach(device_t self)
432 {
433 struct usb_attach_arg *uaa = device_get_ivars(self);
434 struct rsu_softc *sc = device_get_softc(self);
435 struct ieee80211com *ic = &sc->sc_ic;
436 int error;
437 uint8_t iface_index;
438 struct usb_interface *iface;
439 const char *rft;
440
441 device_set_usb_desc(self);
442 sc->sc_udev = uaa->device;
443 sc->sc_dev = self;
444 sc->sc_rx_checksum_enable = 1;
445 if (rsu_enable_11n)
446 sc->sc_ht = !! (USB_GET_DRIVER_INFO(uaa) & RSU_HT_SUPPORTED);
447
448 /* Get number of endpoints */
449 iface = usbd_get_iface(sc->sc_udev, 0);
450 sc->sc_nendpoints = iface->idesc->bNumEndpoints;
451
452 /* Endpoints are hard-coded for now, so enforce 4-endpoint only */
453 if (sc->sc_nendpoints != 4) {
454 device_printf(sc->sc_dev,
455 "the driver currently only supports 4-endpoint devices\n");
456 return (ENXIO);
457 }
458
459 mtx_init(&sc->sc_mtx, device_get_nameunit(self), MTX_NETWORK_LOCK,
460 MTX_DEF);
461 RSU_DELKEY_BMAP_LOCK_INIT(sc);
462 TIMEOUT_TASK_INIT(taskqueue_thread, &sc->calib_task, 0,
463 rsu_calib_task, sc);
464 TASK_INIT(&sc->del_key_task, 0, rsu_delete_key_pair_cb, sc);
465 TASK_INIT(&sc->tx_task, 0, rsu_tx_task, sc);
466 mbufq_init(&sc->sc_snd, ifqmaxlen);
467
468 /* Allocate Tx/Rx buffers. */
469 error = rsu_alloc_rx_list(sc);
470 if (error != 0) {
471 device_printf(sc->sc_dev, "could not allocate Rx buffers\n");
472 goto fail_usb;
473 }
474
475 error = rsu_alloc_tx_list(sc);
476 if (error != 0) {
477 device_printf(sc->sc_dev, "could not allocate Tx buffers\n");
478 rsu_free_rx_list(sc);
479 goto fail_usb;
480 }
481
482 iface_index = 0;
483 error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
484 rsu_config, RSU_N_TRANSFER, sc, &sc->sc_mtx);
485 if (error) {
486 device_printf(sc->sc_dev,
487 "could not allocate USB transfers, err=%s\n",
488 usbd_errstr(error));
489 goto fail_usb;
490 }
491 RSU_LOCK(sc);
492 /* Read chip revision. */
493 sc->cut = MS(rsu_read_4(sc, R92S_PMC_FSM), R92S_PMC_FSM_CUT);
494 if (sc->cut != 3)
495 sc->cut = (sc->cut >> 1) + 1;
496 error = rsu_read_rom(sc);
497 RSU_UNLOCK(sc);
498 if (error != 0) {
499 device_printf(self, "could not read ROM\n");
500 goto fail_rom;
501 }
502
503 /* Figure out TX/RX streams */
504 switch (sc->rom[84]) {
505 case 0x0:
506 sc->sc_rftype = RTL8712_RFCONFIG_1T1R;
507 sc->sc_nrxstream = 1;
508 sc->sc_ntxstream = 1;
509 rft = "1T1R";
510 break;
511 case 0x1:
512 sc->sc_rftype = RTL8712_RFCONFIG_1T2R;
513 sc->sc_nrxstream = 2;
514 sc->sc_ntxstream = 1;
515 rft = "1T2R";
516 break;
517 case 0x2:
518 sc->sc_rftype = RTL8712_RFCONFIG_2T2R;
519 sc->sc_nrxstream = 2;
520 sc->sc_ntxstream = 2;
521 rft = "2T2R";
522 break;
523 case 0x3: /* "green" NIC */
524 sc->sc_rftype = RTL8712_RFCONFIG_1T2R;
525 sc->sc_nrxstream = 2;
526 sc->sc_ntxstream = 1;
527 rft = "1T2R ('green')";
528 break;
529 default:
530 device_printf(sc->sc_dev,
531 "%s: unknown board type (rfconfig=0x%02x)\n",
532 __func__,
533 sc->rom[84]);
534 goto fail_rom;
535 }
536
537 IEEE80211_ADDR_COPY(ic->ic_macaddr, &sc->rom[0x12]);
538 device_printf(self, "MAC/BB RTL8712 cut %d %s\n", sc->cut, rft);
539
540 ic->ic_softc = sc;
541 ic->ic_name = device_get_nameunit(self);
542 ic->ic_phytype = IEEE80211_T_OFDM; /* Not only, but not used. */
543 ic->ic_opmode = IEEE80211_M_STA; /* Default to BSS mode. */
544
545 /* Set device capabilities. */
546 ic->ic_caps =
547 IEEE80211_C_STA | /* station mode */
548 IEEE80211_C_MONITOR | /* monitor mode supported */
549 #if 0
550 IEEE80211_C_BGSCAN | /* Background scan. */
551 #endif
552 IEEE80211_C_SHPREAMBLE | /* Short preamble supported. */
553 IEEE80211_C_WME | /* WME/QoS */
554 IEEE80211_C_SHSLOT | /* Short slot time supported. */
555 IEEE80211_C_WPA; /* WPA/RSN. */
556
557 ic->ic_cryptocaps =
558 IEEE80211_CRYPTO_WEP |
559 IEEE80211_CRYPTO_TKIP |
560 IEEE80211_CRYPTO_AES_CCM;
561
562 /* Check if HT support is present. */
563 if (sc->sc_ht) {
564 device_printf(sc->sc_dev, "%s: enabling 11n\n", __func__);
565
566 /* Enable basic HT */
567 ic->ic_htcaps = IEEE80211_HTC_HT |
568 #if 0
569 IEEE80211_HTC_AMPDU |
570 #endif
571 IEEE80211_HTC_AMSDU |
572 IEEE80211_HTCAP_MAXAMSDU_3839 |
573 IEEE80211_HTCAP_SMPS_OFF;
574 ic->ic_htcaps |= IEEE80211_HTCAP_CHWIDTH40;
575
576 /* set number of spatial streams */
577 ic->ic_txstream = sc->sc_ntxstream;
578 ic->ic_rxstream = sc->sc_nrxstream;
579 }
580 ic->ic_flags_ext |= IEEE80211_FEXT_SCAN_OFFLOAD;
581
582 rsu_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
583 ic->ic_channels);
584
585 ieee80211_ifattach(ic);
586 ic->ic_raw_xmit = rsu_raw_xmit;
587 ic->ic_scan_start = rsu_scan_start;
588 ic->ic_scan_end = rsu_scan_end;
589 ic->ic_getradiocaps = rsu_getradiocaps;
590 ic->ic_set_channel = rsu_set_channel;
591 ic->ic_scan_curchan = rsu_scan_curchan;
592 ic->ic_scan_mindwell = rsu_scan_mindwell;
593 ic->ic_vap_create = rsu_vap_create;
594 ic->ic_vap_delete = rsu_vap_delete;
595 ic->ic_update_promisc = rsu_update_promisc;
596 ic->ic_update_mcast = rsu_update_mcast;
597 ic->ic_ioctl = rsu_ioctl_net;
598 ic->ic_parent = rsu_parent;
599 ic->ic_transmit = rsu_transmit;
600 ic->ic_send_mgmt = rsu_send_mgmt;
601 ic->ic_update_chw = rsu_update_chw;
602 ic->ic_ampdu_enable = rsu_ampdu_enable;
603 ic->ic_wme.wme_update = rsu_wme_update;
604
605 ieee80211_radiotap_attach(ic, &sc->sc_txtap.wt_ihdr,
606 sizeof(sc->sc_txtap), RSU_TX_RADIOTAP_PRESENT,
607 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
608 RSU_RX_RADIOTAP_PRESENT);
609
610 if (bootverbose)
611 ieee80211_announce(ic);
612
613 return (0);
614
615 fail_rom:
616 usbd_transfer_unsetup(sc->sc_xfer, RSU_N_TRANSFER);
617 fail_usb:
618 mtx_destroy(&sc->sc_mtx);
619 return (ENXIO);
620 }
621
622 static int
623 rsu_detach(device_t self)
624 {
625 struct rsu_softc *sc = device_get_softc(self);
626 struct ieee80211com *ic = &sc->sc_ic;
627
628 rsu_stop(sc);
629
630 usbd_transfer_unsetup(sc->sc_xfer, RSU_N_TRANSFER);
631
632 /*
633 * Free buffers /before/ we detach from net80211, else node
634 * references to destroyed vaps will lead to a panic.
635 */
636 /* Free Tx/Rx buffers. */
637 RSU_LOCK(sc);
638 rsu_free_tx_list(sc);
639 rsu_free_rx_list(sc);
640 RSU_UNLOCK(sc);
641
642 /* Frames are freed; detach from net80211 */
643 ieee80211_ifdetach(ic);
644
645 taskqueue_drain_timeout(taskqueue_thread, &sc->calib_task);
646 taskqueue_drain(taskqueue_thread, &sc->del_key_task);
647 taskqueue_drain(taskqueue_thread, &sc->tx_task);
648
649 RSU_DELKEY_BMAP_LOCK_DESTROY(sc);
650 mtx_destroy(&sc->sc_mtx);
651
652 return (0);
653 }
654
655 static usb_error_t
656 rsu_do_request(struct rsu_softc *sc, struct usb_device_request *req,
657 void *data)
658 {
659 usb_error_t err;
660 int ntries = 10;
661
662 RSU_ASSERT_LOCKED(sc);
663
664 while (ntries--) {
665 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx,
666 req, data, 0, NULL, 250 /* ms */);
667 if (err == 0 || err == USB_ERR_NOT_CONFIGURED)
668 break;
669 RSU_DPRINTF(sc, RSU_DEBUG_USB,
670 "Control request failed, %s (retries left: %d)\n",
671 usbd_errstr(err), ntries);
672 rsu_ms_delay(sc, 10);
673 }
674
675 return (err);
676 }
677
678 static struct ieee80211vap *
679 rsu_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
680 enum ieee80211_opmode opmode, int flags,
681 const uint8_t bssid[IEEE80211_ADDR_LEN],
682 const uint8_t mac[IEEE80211_ADDR_LEN])
683 {
684 struct rsu_softc *sc = ic->ic_softc;
685 struct rsu_vap *uvp;
686 struct ieee80211vap *vap;
687 struct ifnet *ifp;
688
689 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
690 return (NULL);
691
692 uvp = malloc(sizeof(struct rsu_vap), M_80211_VAP, M_WAITOK | M_ZERO);
693 vap = &uvp->vap;
694
695 if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
696 flags, bssid) != 0) {
697 /* out of memory */
698 free(uvp, M_80211_VAP);
699 return (NULL);
700 }
701
702 ifp = vap->iv_ifp;
703 ifp->if_capabilities = IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6;
704 RSU_LOCK(sc);
705 if (sc->sc_rx_checksum_enable)
706 ifp->if_capenable |= IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6;
707 RSU_UNLOCK(sc);
708
709 /* override state transition machine */
710 uvp->newstate = vap->iv_newstate;
711 if (opmode == IEEE80211_M_MONITOR)
712 vap->iv_newstate = rsu_monitor_newstate;
713 else
714 vap->iv_newstate = rsu_newstate;
715 vap->iv_key_alloc = rsu_key_alloc;
716 vap->iv_key_set = rsu_key_set;
717 vap->iv_key_delete = rsu_key_delete;
718
719 /* Limits from the r92su driver */
720 vap->iv_ampdu_density = IEEE80211_HTCAP_MPDUDENSITY_16;
721 vap->iv_ampdu_rxmax = IEEE80211_HTCAP_MAXRXAMPDU_32K;
722
723 /* complete setup */
724 ieee80211_vap_attach(vap, ieee80211_media_change,
725 ieee80211_media_status, mac);
726 ic->ic_opmode = opmode;
727
728 return (vap);
729 }
730
731 static void
732 rsu_vap_delete(struct ieee80211vap *vap)
733 {
734 struct rsu_vap *uvp = RSU_VAP(vap);
735
736 ieee80211_vap_detach(vap);
737 free(uvp, M_80211_VAP);
738 }
739
740 static void
741 rsu_scan_start(struct ieee80211com *ic)
742 {
743 struct rsu_softc *sc = ic->ic_softc;
744 struct ieee80211_scan_state *ss = ic->ic_scan;
745 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
746 int error;
747
748 /* Scanning is done by the firmware. */
749 RSU_LOCK(sc);
750 sc->sc_active_scan = !!(ss->ss_flags & IEEE80211_SCAN_ACTIVE);
751 /* XXX TODO: force awake if in network-sleep? */
752 error = rsu_site_survey(sc, ss->ss_nssid > 0 ? &ss->ss_ssid[0] : NULL);
753 RSU_UNLOCK(sc);
754 if (error != 0) {
755 device_printf(sc->sc_dev,
756 "could not send site survey command\n");
757 ieee80211_cancel_scan(vap);
758 }
759 }
760
761 static void
762 rsu_scan_end(struct ieee80211com *ic)
763 {
764 /* Nothing to do here. */
765 }
766
767 static void
768 rsu_getradiocaps(struct ieee80211com *ic,
769 int maxchans, int *nchans, struct ieee80211_channel chans[])
770 {
771 struct rsu_softc *sc = ic->ic_softc;
772 uint8_t bands[IEEE80211_MODE_BYTES];
773
774 /* Set supported .11b and .11g rates. */
775 memset(bands, 0, sizeof(bands));
776 setbit(bands, IEEE80211_MODE_11B);
777 setbit(bands, IEEE80211_MODE_11G);
778 if (sc->sc_ht)
779 setbit(bands, IEEE80211_MODE_11NG);
780 ieee80211_add_channels_default_2ghz(chans, maxchans, nchans,
781 bands, (ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) ?
782 NET80211_CBW_FLAG_HT40 : 0);
783 }
784
785 static void
786 rsu_set_channel(struct ieee80211com *ic)
787 {
788 struct rsu_softc *sc = ic->ic_softc;
789
790 /*
791 * Only need to set the channel in Monitor mode. AP scanning and auth
792 * are already taken care of by their respective firmware commands.
793 */
794 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
795 struct r92s_set_channel cmd;
796 int error;
797
798 cmd.channel = IEEE80211_CHAN2IEEE(ic->ic_curchan);
799
800 RSU_LOCK(sc);
801 error = rsu_fw_cmd(sc, R92S_CMD_SET_CHANNEL, &cmd,
802 sizeof(cmd));
803 if (error != 0) {
804 device_printf(sc->sc_dev,
805 "%s: error %d setting channel\n", __func__,
806 error);
807 }
808 RSU_UNLOCK(sc);
809 }
810 }
811
812 static void
813 rsu_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
814 {
815 /* Scan is done in rsu_scan_start(). */
816 }
817
818 /**
819 * Called by the net80211 framework to indicate
820 * the minimum dwell time has been met, terminate the scan.
821 * We don't actually terminate the scan as the firmware will notify
822 * us when it's finished and we have no way to interrupt it.
823 */
824 static void
825 rsu_scan_mindwell(struct ieee80211_scan_state *ss)
826 {
827 /* NB: don't try to abort scan; wait for firmware to finish */
828 }
829
830 static void
831 rsu_update_promisc(struct ieee80211com *ic)
832 {
833 struct rsu_softc *sc = ic->ic_softc;
834
835 RSU_LOCK(sc);
836 if (sc->sc_running)
837 rsu_rxfilter_refresh(sc);
838 RSU_UNLOCK(sc);
839 }
840
841 /*
842 * The same as rtwn_get_multi_pos() / rtwn_set_multi().
843 */
844 static uint8_t
845 rsu_get_multi_pos(const uint8_t maddr[])
846 {
847 uint64_t mask = 0x00004d101df481b4;
848 uint8_t pos = 0x27; /* initial value */
849 int i, j;
850
851 for (i = 0; i < IEEE80211_ADDR_LEN; i++)
852 for (j = (i == 0) ? 1 : 0; j < 8; j++)
853 if ((maddr[i] >> j) & 1)
854 pos ^= (mask >> (i * 8 + j - 1));
855
856 pos &= 0x3f;
857
858 return (pos);
859 }
860
861 static u_int
862 rsu_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
863 {
864 uint32_t *mfilt = arg;
865 uint8_t pos;
866
867 pos = rsu_get_multi_pos(LLADDR(sdl));
868 mfilt[pos / 32] |= (1 << (pos % 32));
869
870 return (1);
871 }
872
873 static void
874 rsu_set_multi(struct rsu_softc *sc)
875 {
876 struct ieee80211com *ic = &sc->sc_ic;
877 uint32_t mfilt[2];
878
879 RSU_ASSERT_LOCKED(sc);
880
881 /* general structure was copied from ath(4). */
882 if (ic->ic_allmulti == 0) {
883 struct ieee80211vap *vap;
884
885 /*
886 * Merge multicast addresses to form the hardware filter.
887 */
888 mfilt[0] = mfilt[1] = 0;
889 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
890 if_foreach_llmaddr(vap->iv_ifp, rsu_hash_maddr, &mfilt);
891 } else
892 mfilt[0] = mfilt[1] = ~0;
893
894 rsu_write_4(sc, R92S_MAR + 0, mfilt[0]);
895 rsu_write_4(sc, R92S_MAR + 4, mfilt[1]);
896
897 RSU_DPRINTF(sc, RSU_DEBUG_STATE, "%s: MC filter %08x:%08x\n",
898 __func__, mfilt[0], mfilt[1]);
899 }
900
901 static void
902 rsu_update_mcast(struct ieee80211com *ic)
903 {
904 struct rsu_softc *sc = ic->ic_softc;
905
906 RSU_LOCK(sc);
907 if (sc->sc_running)
908 rsu_set_multi(sc);
909 RSU_UNLOCK(sc);
910 }
911
912 static int
913 rsu_alloc_list(struct rsu_softc *sc, struct rsu_data data[],
914 int ndata, int maxsz)
915 {
916 int i, error;
917
918 for (i = 0; i < ndata; i++) {
919 struct rsu_data *dp = &data[i];
920 dp->sc = sc;
921 dp->m = NULL;
922 dp->buf = malloc(maxsz, M_USBDEV, M_NOWAIT);
923 if (dp->buf == NULL) {
924 device_printf(sc->sc_dev,
925 "could not allocate buffer\n");
926 error = ENOMEM;
927 goto fail;
928 }
929 dp->ni = NULL;
930 }
931
932 return (0);
933 fail:
934 rsu_free_list(sc, data, ndata);
935 return (error);
936 }
937
938 static int
939 rsu_alloc_rx_list(struct rsu_softc *sc)
940 {
941 int error, i;
942
943 error = rsu_alloc_list(sc, sc->sc_rx, RSU_RX_LIST_COUNT,
944 RSU_RXBUFSZ);
945 if (error != 0)
946 return (error);
947
948 STAILQ_INIT(&sc->sc_rx_active);
949 STAILQ_INIT(&sc->sc_rx_inactive);
950
951 for (i = 0; i < RSU_RX_LIST_COUNT; i++)
952 STAILQ_INSERT_HEAD(&sc->sc_rx_inactive, &sc->sc_rx[i], next);
953
954 return (0);
955 }
956
957 static int
958 rsu_alloc_tx_list(struct rsu_softc *sc)
959 {
960 int error, i;
961
962 error = rsu_alloc_list(sc, sc->sc_tx, RSU_TX_LIST_COUNT,
963 RSU_TXBUFSZ);
964 if (error != 0)
965 return (error);
966
967 STAILQ_INIT(&sc->sc_tx_inactive);
968
969 for (i = 0; i != RSU_N_TRANSFER; i++) {
970 STAILQ_INIT(&sc->sc_tx_active[i]);
971 STAILQ_INIT(&sc->sc_tx_pending[i]);
972 }
973
974 for (i = 0; i < RSU_TX_LIST_COUNT; i++) {
975 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, &sc->sc_tx[i], next);
976 }
977
978 return (0);
979 }
980
981 static void
982 rsu_free_tx_list(struct rsu_softc *sc)
983 {
984 int i;
985
986 /* prevent further allocations from TX list(s) */
987 STAILQ_INIT(&sc->sc_tx_inactive);
988
989 for (i = 0; i != RSU_N_TRANSFER; i++) {
990 STAILQ_INIT(&sc->sc_tx_active[i]);
991 STAILQ_INIT(&sc->sc_tx_pending[i]);
992 }
993
994 rsu_free_list(sc, sc->sc_tx, RSU_TX_LIST_COUNT);
995 }
996
997 static void
998 rsu_free_rx_list(struct rsu_softc *sc)
999 {
1000 /* prevent further allocations from RX list(s) */
1001 STAILQ_INIT(&sc->sc_rx_inactive);
1002 STAILQ_INIT(&sc->sc_rx_active);
1003
1004 rsu_free_list(sc, sc->sc_rx, RSU_RX_LIST_COUNT);
1005 }
1006
1007 static void
1008 rsu_free_list(struct rsu_softc *sc, struct rsu_data data[], int ndata)
1009 {
1010 int i;
1011
1012 for (i = 0; i < ndata; i++) {
1013 struct rsu_data *dp = &data[i];
1014
1015 if (dp->buf != NULL) {
1016 free(dp->buf, M_USBDEV);
1017 dp->buf = NULL;
1018 }
1019 if (dp->ni != NULL) {
1020 ieee80211_free_node(dp->ni);
1021 dp->ni = NULL;
1022 }
1023 }
1024 }
1025
1026 static struct rsu_data *
1027 _rsu_getbuf(struct rsu_softc *sc)
1028 {
1029 struct rsu_data *bf;
1030
1031 bf = STAILQ_FIRST(&sc->sc_tx_inactive);
1032 if (bf != NULL)
1033 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
1034 else
1035 bf = NULL;
1036 return (bf);
1037 }
1038
1039 static struct rsu_data *
1040 rsu_getbuf(struct rsu_softc *sc)
1041 {
1042 struct rsu_data *bf;
1043
1044 RSU_ASSERT_LOCKED(sc);
1045
1046 bf = _rsu_getbuf(sc);
1047 if (bf == NULL) {
1048 RSU_DPRINTF(sc, RSU_DEBUG_TX, "%s: no buffers\n", __func__);
1049 }
1050 return (bf);
1051 }
1052
1053 static void
1054 rsu_freebuf(struct rsu_softc *sc, struct rsu_data *bf)
1055 {
1056
1057 RSU_ASSERT_LOCKED(sc);
1058 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, bf, next);
1059 }
1060
1061 static int
1062 rsu_write_region_1(struct rsu_softc *sc, uint16_t addr, uint8_t *buf,
1063 int len)
1064 {
1065 usb_device_request_t req;
1066
1067 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1068 req.bRequest = R92S_REQ_REGS;
1069 USETW(req.wValue, addr);
1070 USETW(req.wIndex, 0);
1071 USETW(req.wLength, len);
1072
1073 return (rsu_do_request(sc, &req, buf));
1074 }
1075
1076 static void
1077 rsu_write_1(struct rsu_softc *sc, uint16_t addr, uint8_t val)
1078 {
1079 rsu_write_region_1(sc, addr, &val, 1);
1080 }
1081
1082 static void
1083 rsu_write_2(struct rsu_softc *sc, uint16_t addr, uint16_t val)
1084 {
1085 val = htole16(val);
1086 rsu_write_region_1(sc, addr, (uint8_t *)&val, 2);
1087 }
1088
1089 static void
1090 rsu_write_4(struct rsu_softc *sc, uint16_t addr, uint32_t val)
1091 {
1092 val = htole32(val);
1093 rsu_write_region_1(sc, addr, (uint8_t *)&val, 4);
1094 }
1095
1096 static int
1097 rsu_read_region_1(struct rsu_softc *sc, uint16_t addr, uint8_t *buf,
1098 int len)
1099 {
1100 usb_device_request_t req;
1101
1102 req.bmRequestType = UT_READ_VENDOR_DEVICE;
1103 req.bRequest = R92S_REQ_REGS;
1104 USETW(req.wValue, addr);
1105 USETW(req.wIndex, 0);
1106 USETW(req.wLength, len);
1107
1108 return (rsu_do_request(sc, &req, buf));
1109 }
1110
1111 static uint8_t
1112 rsu_read_1(struct rsu_softc *sc, uint16_t addr)
1113 {
1114 uint8_t val;
1115
1116 if (rsu_read_region_1(sc, addr, &val, 1) != 0)
1117 return (0xff);
1118 return (val);
1119 }
1120
1121 static uint16_t
1122 rsu_read_2(struct rsu_softc *sc, uint16_t addr)
1123 {
1124 uint16_t val;
1125
1126 if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 2) != 0)
1127 return (0xffff);
1128 return (le16toh(val));
1129 }
1130
1131 static uint32_t
1132 rsu_read_4(struct rsu_softc *sc, uint16_t addr)
1133 {
1134 uint32_t val;
1135
1136 if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 4) != 0)
1137 return (0xffffffff);
1138 return (le32toh(val));
1139 }
1140
1141 static int
1142 rsu_fw_iocmd(struct rsu_softc *sc, uint32_t iocmd)
1143 {
1144 int ntries;
1145
1146 rsu_write_4(sc, R92S_IOCMD_CTRL, iocmd);
1147 rsu_ms_delay(sc, 1);
1148 for (ntries = 0; ntries < 50; ntries++) {
1149 if (rsu_read_4(sc, R92S_IOCMD_CTRL) == 0)
1150 return (0);
1151 rsu_ms_delay(sc, 1);
1152 }
1153 return (ETIMEDOUT);
1154 }
1155
1156 static uint8_t
1157 rsu_efuse_read_1(struct rsu_softc *sc, uint16_t addr)
1158 {
1159 uint32_t reg;
1160 int ntries;
1161
1162 reg = rsu_read_4(sc, R92S_EFUSE_CTRL);
1163 reg = RW(reg, R92S_EFUSE_CTRL_ADDR, addr);
1164 reg &= ~R92S_EFUSE_CTRL_VALID;
1165 rsu_write_4(sc, R92S_EFUSE_CTRL, reg);
1166 /* Wait for read operation to complete. */
1167 for (ntries = 0; ntries < 100; ntries++) {
1168 reg = rsu_read_4(sc, R92S_EFUSE_CTRL);
1169 if (reg & R92S_EFUSE_CTRL_VALID)
1170 return (MS(reg, R92S_EFUSE_CTRL_DATA));
1171 rsu_ms_delay(sc, 1);
1172 }
1173 device_printf(sc->sc_dev,
1174 "could not read efuse byte at address 0x%x\n", addr);
1175 return (0xff);
1176 }
1177
1178 static int
1179 rsu_read_rom(struct rsu_softc *sc)
1180 {
1181 uint8_t *rom = sc->rom;
1182 uint16_t addr = 0;
1183 uint32_t reg;
1184 uint8_t off, msk;
1185 int i;
1186
1187 /* Make sure that ROM type is eFuse and that autoload succeeded. */
1188 reg = rsu_read_1(sc, R92S_EE_9346CR);
1189 if ((reg & (R92S_9356SEL | R92S_EEPROM_EN)) != R92S_EEPROM_EN)
1190 return (EIO);
1191
1192 /* Turn on 2.5V to prevent eFuse leakage. */
1193 reg = rsu_read_1(sc, R92S_EFUSE_TEST + 3);
1194 rsu_write_1(sc, R92S_EFUSE_TEST + 3, reg | 0x80);
1195 rsu_ms_delay(sc, 1);
1196 rsu_write_1(sc, R92S_EFUSE_TEST + 3, reg & ~0x80);
1197
1198 /* Read full ROM image. */
1199 memset(&sc->rom, 0xff, sizeof(sc->rom));
1200 while (addr < 512) {
1201 reg = rsu_efuse_read_1(sc, addr);
1202 if (reg == 0xff)
1203 break;
1204 addr++;
1205 off = reg >> 4;
1206 msk = reg & 0xf;
1207 for (i = 0; i < 4; i++) {
1208 if (msk & (1 << i))
1209 continue;
1210 rom[off * 8 + i * 2 + 0] =
1211 rsu_efuse_read_1(sc, addr);
1212 addr++;
1213 rom[off * 8 + i * 2 + 1] =
1214 rsu_efuse_read_1(sc, addr);
1215 addr++;
1216 }
1217 }
1218 #ifdef USB_DEBUG
1219 if (rsu_debug & RSU_DEBUG_RESET) {
1220 /* Dump ROM content. */
1221 printf("\n");
1222 for (i = 0; i < sizeof(sc->rom); i++)
1223 printf("%02x:", rom[i]);
1224 printf("\n");
1225 }
1226 #endif
1227 return (0);
1228 }
1229
1230 static int
1231 rsu_fw_cmd(struct rsu_softc *sc, uint8_t code, void *buf, int len)
1232 {
1233 const uint8_t which = RSU_H2C_ENDPOINT;
1234 struct rsu_data *data;
1235 struct r92s_tx_desc *txd;
1236 struct r92s_fw_cmd_hdr *cmd;
1237 int cmdsz;
1238 int xferlen;
1239
1240 RSU_ASSERT_LOCKED(sc);
1241
1242 data = rsu_getbuf(sc);
1243 if (data == NULL)
1244 return (ENOMEM);
1245
1246 /* Blank the entire payload, just to be safe */
1247 memset(data->buf, '\0', RSU_TXBUFSZ);
1248
1249 /* Round-up command length to a multiple of 8 bytes. */
1250 /* XXX TODO: is this required? */
1251 cmdsz = (len + 7) & ~7;
1252
1253 xferlen = sizeof(*txd) + sizeof(*cmd) + cmdsz;
1254 KASSERT(xferlen <= RSU_TXBUFSZ, ("%s: invalid length", __func__));
1255 memset(data->buf, 0, xferlen);
1256
1257 /* Setup Tx descriptor. */
1258 txd = (struct r92s_tx_desc *)data->buf;
1259 txd->txdw0 = htole32(
1260 SM(R92S_TXDW0_OFFSET, sizeof(*txd)) |
1261 SM(R92S_TXDW0_PKTLEN, sizeof(*cmd) + cmdsz) |
1262 R92S_TXDW0_OWN | R92S_TXDW0_FSG | R92S_TXDW0_LSG);
1263 txd->txdw1 = htole32(SM(R92S_TXDW1_QSEL, R92S_TXDW1_QSEL_H2C));
1264
1265 /* Setup command header. */
1266 cmd = (struct r92s_fw_cmd_hdr *)&txd[1];
1267 cmd->len = htole16(cmdsz);
1268 cmd->code = code;
1269 cmd->seq = sc->cmd_seq;
1270 sc->cmd_seq = (sc->cmd_seq + 1) & 0x7f;
1271
1272 /* Copy command payload. */
1273 memcpy(&cmd[1], buf, len);
1274
1275 RSU_DPRINTF(sc, RSU_DEBUG_TX | RSU_DEBUG_FWCMD,
1276 "%s: Tx cmd code=0x%x len=0x%x\n",
1277 __func__, code, cmdsz);
1278 data->buflen = xferlen;
1279 STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
1280 usbd_transfer_start(sc->sc_xfer[which]);
1281
1282 return (0);
1283 }
1284
1285 /* ARGSUSED */
1286 static void
1287 rsu_calib_task(void *arg, int pending __unused)
1288 {
1289 struct rsu_softc *sc = arg;
1290 #ifdef notyet
1291 uint32_t reg;
1292 #endif
1293
1294 RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "%s: running calibration task\n",
1295 __func__);
1296
1297 RSU_LOCK(sc);
1298 #ifdef notyet
1299 /* Read WPS PBC status. */
1300 rsu_write_1(sc, R92S_MAC_PINMUX_CTRL,
1301 R92S_GPIOMUX_EN | SM(R92S_GPIOSEL_GPIO, R92S_GPIOSEL_GPIO_JTAG));
1302 rsu_write_1(sc, R92S_GPIO_IO_SEL,
1303 rsu_read_1(sc, R92S_GPIO_IO_SEL) & ~R92S_GPIO_WPS);
1304 reg = rsu_read_1(sc, R92S_GPIO_CTRL);
1305 if (reg != 0xff && (reg & R92S_GPIO_WPS))
1306 RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "WPS PBC is pushed\n");
1307 #endif
1308 /* Read current signal level. */
1309 if (rsu_fw_iocmd(sc, 0xf4000001) == 0) {
1310 sc->sc_currssi = rsu_read_4(sc, R92S_IOCMD_DATA);
1311 RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "%s: RSSI=%d (%d)\n",
1312 __func__, sc->sc_currssi,
1313 rsu_hwrssi_to_rssi(sc, sc->sc_currssi));
1314 }
1315 if (sc->sc_calibrating)
1316 taskqueue_enqueue_timeout(taskqueue_thread, &sc->calib_task, hz);
1317 RSU_UNLOCK(sc);
1318 }
1319
1320 static void
1321 rsu_tx_task(void *arg, int pending __unused)
1322 {
1323 struct rsu_softc *sc = arg;
1324
1325 RSU_LOCK(sc);
1326 _rsu_start(sc);
1327 RSU_UNLOCK(sc);
1328 }
1329
1330 #define RSU_PWR_UNKNOWN 0x0
1331 #define RSU_PWR_ACTIVE 0x1
1332 #define RSU_PWR_OFF 0x2
1333 #define RSU_PWR_SLEEP 0x3
1334
1335 /*
1336 * Set the current power state.
1337 *
1338 * The rtlwifi code doesn't do this so aggressively; it
1339 * waits for an idle period after association with
1340 * no traffic before doing this.
1341 *
1342 * For now - it's on in all states except RUN, and
1343 * in RUN it'll transition to allow sleep.
1344 */
1345
1346 struct r92s_pwr_cmd {
1347 uint8_t mode;
1348 uint8_t smart_ps;
1349 uint8_t bcn_pass_time;
1350 };
1351
1352 static int
1353 rsu_set_fw_power_state(struct rsu_softc *sc, int state)
1354 {
1355 struct r92s_set_pwr_mode cmd;
1356 //struct r92s_pwr_cmd cmd;
1357 int error;
1358
1359 RSU_ASSERT_LOCKED(sc);
1360
1361 /* only change state if required */
1362 if (sc->sc_curpwrstate == state)
1363 return (0);
1364
1365 memset(&cmd, 0, sizeof(cmd));
1366
1367 switch (state) {
1368 case RSU_PWR_ACTIVE:
1369 /* Force the hardware awake */
1370 rsu_write_1(sc, R92S_USB_HRPWM,
1371 R92S_USB_HRPWM_PS_ST_ACTIVE | R92S_USB_HRPWM_PS_ALL_ON);
1372 cmd.mode = R92S_PS_MODE_ACTIVE;
1373 break;
1374 case RSU_PWR_SLEEP:
1375 cmd.mode = R92S_PS_MODE_DTIM; /* XXX configurable? */
1376 cmd.smart_ps = 1; /* XXX 2 if doing p2p */
1377 cmd.bcn_pass_time = 5; /* in 100mS usb.c, linux/rtlwifi */
1378 break;
1379 case RSU_PWR_OFF:
1380 cmd.mode = R92S_PS_MODE_RADIOOFF;
1381 break;
1382 default:
1383 device_printf(sc->sc_dev, "%s: unknown ps mode (%d)\n",
1384 __func__,
1385 state);
1386 return (ENXIO);
1387 }
1388
1389 RSU_DPRINTF(sc, RSU_DEBUG_RESET,
1390 "%s: setting ps mode to %d (mode %d)\n",
1391 __func__, state, cmd.mode);
1392 error = rsu_fw_cmd(sc, R92S_CMD_SET_PWR_MODE, &cmd, sizeof(cmd));
1393 if (error == 0)
1394 sc->sc_curpwrstate = state;
1395
1396 return (error);
1397 }
1398
1399 static void
1400 rsu_set_led(struct rsu_softc *sc, int on)
1401 {
1402 rsu_write_1(sc, R92S_LEDCFG,
1403 (rsu_read_1(sc, R92S_LEDCFG) & 0xf0) | (!on << 3));
1404 }
1405
1406 static int
1407 rsu_monitor_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate,
1408 int arg)
1409 {
1410 struct ieee80211com *ic = vap->iv_ic;
1411 struct rsu_softc *sc = ic->ic_softc;
1412 struct rsu_vap *uvp = RSU_VAP(vap);
1413
1414 if (vap->iv_state != nstate) {
1415 IEEE80211_UNLOCK(ic);
1416 RSU_LOCK(sc);
1417
1418 switch (nstate) {
1419 case IEEE80211_S_INIT:
1420 sc->sc_vap_is_running = 0;
1421 rsu_set_led(sc, 0);
1422 break;
1423 case IEEE80211_S_RUN:
1424 sc->sc_vap_is_running = 1;
1425 rsu_set_led(sc, 1);
1426 break;
1427 default:
1428 /* NOTREACHED */
1429 break;
1430 }
1431 rsu_rxfilter_refresh(sc);
1432
1433 RSU_UNLOCK(sc);
1434 IEEE80211_LOCK(ic);
1435 }
1436
1437 return (uvp->newstate(vap, nstate, arg));
1438 }
1439
1440 static int
1441 rsu_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1442 {
1443 struct rsu_vap *uvp = RSU_VAP(vap);
1444 struct ieee80211com *ic = vap->iv_ic;
1445 struct rsu_softc *sc = ic->ic_softc;
1446 struct ieee80211_node *ni;
1447 struct ieee80211_rateset *rs;
1448 enum ieee80211_state ostate;
1449 int error, startcal = 0;
1450
1451 ostate = vap->iv_state;
1452 RSU_DPRINTF(sc, RSU_DEBUG_STATE, "%s: %s -> %s\n",
1453 __func__,
1454 ieee80211_state_name[ostate],
1455 ieee80211_state_name[nstate]);
1456
1457 IEEE80211_UNLOCK(ic);
1458 if (ostate == IEEE80211_S_RUN) {
1459 RSU_LOCK(sc);
1460 /* Stop calibration. */
1461 sc->sc_calibrating = 0;
1462
1463 /* Pause Tx for AC queues. */
1464 rsu_write_1(sc, R92S_TXPAUSE, R92S_TXPAUSE_AC);
1465 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(10));
1466
1467 RSU_UNLOCK(sc);
1468 taskqueue_drain_timeout(taskqueue_thread, &sc->calib_task);
1469 taskqueue_drain(taskqueue_thread, &sc->tx_task);
1470 RSU_LOCK(sc);
1471 /* Disassociate from our current BSS. */
1472 rsu_disconnect(sc);
1473 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(10));
1474
1475 /* Refresh Rx filter (may be modified by firmware). */
1476 sc->sc_vap_is_running = 0;
1477 rsu_rxfilter_refresh(sc);
1478
1479 /* Reinstall static keys. */
1480 if (sc->sc_running)
1481 rsu_reinit_static_keys(sc);
1482 } else
1483 RSU_LOCK(sc);
1484 switch (nstate) {
1485 case IEEE80211_S_INIT:
1486 (void) rsu_set_fw_power_state(sc, RSU_PWR_ACTIVE);
1487 break;
1488 case IEEE80211_S_AUTH:
1489 ni = ieee80211_ref_node(vap->iv_bss);
1490 (void) rsu_set_fw_power_state(sc, RSU_PWR_ACTIVE);
1491 error = rsu_join_bss(sc, ni);
1492 ieee80211_free_node(ni);
1493 if (error != 0) {
1494 device_printf(sc->sc_dev,
1495 "could not send join command\n");
1496 }
1497 break;
1498 case IEEE80211_S_RUN:
1499 /* Flush all AC queues. */
1500 rsu_write_1(sc, R92S_TXPAUSE, 0);
1501
1502 ni = ieee80211_ref_node(vap->iv_bss);
1503 rs = &ni->ni_rates;
1504 /* Indicate highest supported rate. */
1505 ni->ni_txrate = rs->rs_rates[rs->rs_nrates - 1];
1506 (void) rsu_set_fw_power_state(sc, RSU_PWR_SLEEP);
1507 ieee80211_free_node(ni);
1508 startcal = 1;
1509 break;
1510 default:
1511 break;
1512 }
1513 if (startcal != 0) {
1514 sc->sc_calibrating = 1;
1515 /* Start periodic calibration. */
1516 taskqueue_enqueue_timeout(taskqueue_thread, &sc->calib_task,
1517 hz);
1518 }
1519 RSU_UNLOCK(sc);
1520 IEEE80211_LOCK(ic);
1521 return (uvp->newstate(vap, nstate, arg));
1522 }
1523
1524 static int
1525 rsu_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k,
1526 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix)
1527 {
1528 struct rsu_softc *sc = vap->iv_ic->ic_softc;
1529 int is_checked = 0;
1530
1531 if (&vap->iv_nw_keys[0] <= k &&
1532 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) {
1533 *keyix = ieee80211_crypto_get_key_wepidx(vap, k);
1534 } else {
1535 if (vap->iv_opmode != IEEE80211_M_STA) {
1536 *keyix = 0;
1537 /* TODO: obtain keyix from node id */
1538 is_checked = 1;
1539 k->wk_flags |= IEEE80211_KEY_SWCRYPT;
1540 } else
1541 *keyix = R92S_MACID_BSS;
1542 }
1543
1544 if (!is_checked) {
1545 RSU_LOCK(sc);
1546 if (isset(sc->keys_bmap, *keyix)) {
1547 device_printf(sc->sc_dev,
1548 "%s: key slot %d is already used!\n",
1549 __func__, *keyix);
1550 RSU_UNLOCK(sc);
1551 return (0);
1552 }
1553 setbit(sc->keys_bmap, *keyix);
1554 RSU_UNLOCK(sc);
1555 }
1556
1557 *rxkeyix = *keyix;
1558
1559 return (1);
1560 }
1561
1562 static int
1563 rsu_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k,
1564 int set)
1565 {
1566 struct rsu_softc *sc = vap->iv_ic->ic_softc;
1567 int ret;
1568
1569 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) {
1570 /* Not for us. */
1571 return (1);
1572 }
1573
1574 /* Handle group keys. */
1575 if (&vap->iv_nw_keys[0] <= k &&
1576 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) {
1577 KASSERT(k->wk_keyix < nitems(sc->group_keys),
1578 ("keyix %u > %zu\n", k->wk_keyix, nitems(sc->group_keys)));
1579
1580 RSU_LOCK(sc);
1581 sc->group_keys[k->wk_keyix] = (set ? k : NULL);
1582 if (!sc->sc_running) {
1583 /* Static keys will be set during device startup. */
1584 RSU_UNLOCK(sc);
1585 return (1);
1586 }
1587
1588 if (set)
1589 ret = rsu_set_key_group(sc, k);
1590 else
1591 ret = rsu_delete_key(sc, k->wk_keyix);
1592 RSU_UNLOCK(sc);
1593
1594 return (!ret);
1595 }
1596
1597 if (set) {
1598 /* wait for pending key removal */
1599 taskqueue_drain(taskqueue_thread, &sc->del_key_task);
1600
1601 RSU_LOCK(sc);
1602 ret = rsu_set_key_pair(sc, k);
1603 RSU_UNLOCK(sc);
1604 } else {
1605 RSU_DELKEY_BMAP_LOCK(sc);
1606 setbit(sc->free_keys_bmap, k->wk_keyix);
1607 RSU_DELKEY_BMAP_UNLOCK(sc);
1608
1609 /* workaround ieee80211_node_delucastkey() locking */
1610 taskqueue_enqueue(taskqueue_thread, &sc->del_key_task);
1611 ret = 0; /* fake success */
1612 }
1613
1614 return (!ret);
1615 }
1616
1617 static int
1618 rsu_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
1619 {
1620 return (rsu_process_key(vap, k, 1));
1621 }
1622
1623 static int
1624 rsu_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
1625 {
1626 return (rsu_process_key(vap, k, 0));
1627 }
1628
1629 static int
1630 rsu_cam_read(struct rsu_softc *sc, uint8_t addr, uint32_t *val)
1631 {
1632 int ntries;
1633
1634 rsu_write_4(sc, R92S_CAMCMD,
1635 R92S_CAMCMD_POLLING | SM(R92S_CAMCMD_ADDR, addr));
1636 for (ntries = 0; ntries < 10; ntries++) {
1637 if (!(rsu_read_4(sc, R92S_CAMCMD) & R92S_CAMCMD_POLLING))
1638 break;
1639
1640 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(1));
1641 }
1642 if (ntries == 10) {
1643 device_printf(sc->sc_dev,
1644 "%s: cannot read CAM entry at address %02X\n",
1645 __func__, addr);
1646 return (ETIMEDOUT);
1647 }
1648
1649 *val = rsu_read_4(sc, R92S_CAMREAD);
1650
1651 return (0);
1652 }
1653
1654 static void
1655 rsu_cam_write(struct rsu_softc *sc, uint8_t addr, uint32_t data)
1656 {
1657
1658 rsu_write_4(sc, R92S_CAMWRITE, data);
1659 rsu_write_4(sc, R92S_CAMCMD,
1660 R92S_CAMCMD_POLLING | R92S_CAMCMD_WRITE |
1661 SM(R92S_CAMCMD_ADDR, addr));
1662 }
1663
1664 static int
1665 rsu_key_check(struct rsu_softc *sc, ieee80211_keyix keyix, int is_valid)
1666 {
1667 uint32_t val;
1668 int error, ntries;
1669
1670 for (ntries = 0; ntries < 20; ntries++) {
1671 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(1));
1672
1673 error = rsu_cam_read(sc, R92S_CAM_CTL0(keyix), &val);
1674 if (error != 0) {
1675 device_printf(sc->sc_dev,
1676 "%s: cannot check key status!\n", __func__);
1677 return (error);
1678 }
1679 if (((val & R92S_CAM_VALID) == 0) ^ is_valid)
1680 break;
1681 }
1682 if (ntries == 20) {
1683 device_printf(sc->sc_dev,
1684 "%s: key %d is %s marked as valid, rejecting request\n",
1685 __func__, keyix, is_valid ? "not" : "still");
1686 return (EIO);
1687 }
1688
1689 return (0);
1690 }
1691
1692 /*
1693 * Map net80211 cipher to RTL8712 security mode.
1694 */
1695 static uint8_t
1696 rsu_crypto_mode(struct rsu_softc *sc, u_int cipher, int keylen)
1697 {
1698 switch (cipher) {
1699 case IEEE80211_CIPHER_WEP:
1700 return keylen < 8 ? R92S_KEY_ALGO_WEP40 : R92S_KEY_ALGO_WEP104;
1701 case IEEE80211_CIPHER_TKIP:
1702 return R92S_KEY_ALGO_TKIP;
1703 case IEEE80211_CIPHER_AES_CCM:
1704 return R92S_KEY_ALGO_AES;
1705 default:
1706 device_printf(sc->sc_dev, "unknown cipher %d\n", cipher);
1707 return R92S_KEY_ALGO_INVALID;
1708 }
1709 }
1710
1711 static int
1712 rsu_set_key_group(struct rsu_softc *sc, const struct ieee80211_key *k)
1713 {
1714 struct r92s_fw_cmd_set_key key;
1715 uint8_t algo;
1716 int error;
1717
1718 RSU_ASSERT_LOCKED(sc);
1719
1720 /* Map net80211 cipher to HW crypto algorithm. */
1721 algo = rsu_crypto_mode(sc, k->wk_cipher->ic_cipher, k->wk_keylen);
1722 if (algo == R92S_KEY_ALGO_INVALID)
1723 return (EINVAL);
1724
1725 memset(&key, 0, sizeof(key));
1726 key.algo = algo;
1727 key.cam_id = k->wk_keyix;
1728 key.grpkey = (k->wk_flags & IEEE80211_KEY_GROUP) != 0;
1729 memcpy(key.key, k->wk_key, MIN(k->wk_keylen, sizeof(key.key)));
1730
1731 RSU_DPRINTF(sc, RSU_DEBUG_KEY | RSU_DEBUG_FWCMD,
1732 "%s: keyix %u, group %u, algo %u/%u, flags %04X, len %u, "
1733 "macaddr %s\n", __func__, key.cam_id, key.grpkey,
1734 k->wk_cipher->ic_cipher, key.algo, k->wk_flags, k->wk_keylen,
1735 ether_sprintf(k->wk_macaddr));
1736
1737 error = rsu_fw_cmd(sc, R92S_CMD_SET_KEY, &key, sizeof(key));
1738 if (error != 0) {
1739 device_printf(sc->sc_dev,
1740 "%s: cannot send firmware command, error %d\n",
1741 __func__, error);
1742 return (error);
1743 }
1744
1745 return (rsu_key_check(sc, k->wk_keyix, 1));
1746 }
1747
1748 static int
1749 rsu_set_key_pair(struct rsu_softc *sc, const struct ieee80211_key *k)
1750 {
1751 struct r92s_fw_cmd_set_key_mac key;
1752 uint8_t algo;
1753 int error;
1754
1755 RSU_ASSERT_LOCKED(sc);
1756
1757 if (!sc->sc_running)
1758 return (ESHUTDOWN);
1759
1760 /* Map net80211 cipher to HW crypto algorithm. */
1761 algo = rsu_crypto_mode(sc, k->wk_cipher->ic_cipher, k->wk_keylen);
1762 if (algo == R92S_KEY_ALGO_INVALID)
1763 return (EINVAL);
1764
1765 memset(&key, 0, sizeof(key));
1766 key.algo = algo;
1767 memcpy(key.macaddr, k->wk_macaddr, sizeof(key.macaddr));
1768 memcpy(key.key, k->wk_key, MIN(k->wk_keylen, sizeof(key.key)));
1769
1770 RSU_DPRINTF(sc, RSU_DEBUG_KEY | RSU_DEBUG_FWCMD,
1771 "%s: keyix %u, algo %u/%u, flags %04X, len %u, macaddr %s\n",
1772 __func__, k->wk_keyix, k->wk_cipher->ic_cipher, key.algo,
1773 k->wk_flags, k->wk_keylen, ether_sprintf(key.macaddr));
1774
1775 error = rsu_fw_cmd(sc, R92S_CMD_SET_STA_KEY, &key, sizeof(key));
1776 if (error != 0) {
1777 device_printf(sc->sc_dev,
1778 "%s: cannot send firmware command, error %d\n",
1779 __func__, error);
1780 return (error);
1781 }
1782
1783 return (rsu_key_check(sc, k->wk_keyix, 1));
1784 }
1785
1786 static int
1787 rsu_reinit_static_keys(struct rsu_softc *sc)
1788 {
1789 int i, error;
1790
1791 for (i = 0; i < nitems(sc->group_keys); i++) {
1792 if (sc->group_keys[i] != NULL) {
1793 error = rsu_set_key_group(sc, sc->group_keys[i]);
1794 if (error != 0) {
1795 device_printf(sc->sc_dev,
1796 "%s: failed to set static key %d, "
1797 "error %d\n", __func__, i, error);
1798 return (error);
1799 }
1800 }
1801 }
1802
1803 return (0);
1804 }
1805
1806 static int
1807 rsu_delete_key(struct rsu_softc *sc, ieee80211_keyix keyix)
1808 {
1809 struct r92s_fw_cmd_set_key key;
1810 uint32_t val;
1811 int error;
1812
1813 RSU_ASSERT_LOCKED(sc);
1814
1815 if (!sc->sc_running)
1816 return (0);
1817
1818 /* check if it was automatically removed by firmware */
1819 error = rsu_cam_read(sc, R92S_CAM_CTL0(keyix), &val);
1820 if (error == 0 && (val & R92S_CAM_VALID) == 0) {
1821 RSU_DPRINTF(sc, RSU_DEBUG_KEY,
1822 "%s: key %u does not exist\n", __func__, keyix);
1823 clrbit(sc->keys_bmap, keyix);
1824 return (0);
1825 }
1826
1827 memset(&key, 0, sizeof(key));
1828 key.cam_id = keyix;
1829
1830 RSU_DPRINTF(sc, RSU_DEBUG_KEY | RSU_DEBUG_FWCMD,
1831 "%s: removing key %u\n", __func__, key.cam_id);
1832
1833 error = rsu_fw_cmd(sc, R92S_CMD_SET_KEY, &key, sizeof(key));
1834 if (error != 0) {
1835 device_printf(sc->sc_dev,
1836 "%s: cannot send firmware command, error %d\n",
1837 __func__, error);
1838 goto finish;
1839 }
1840
1841 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(5));
1842
1843 /*
1844 * Clear 'valid' bit manually (cannot be done via firmware command).
1845 * Used for key check + when firmware command cannot be sent.
1846 */
1847 finish:
1848 rsu_cam_write(sc, R92S_CAM_CTL0(keyix), 0);
1849
1850 clrbit(sc->keys_bmap, keyix);
1851
1852 return (rsu_key_check(sc, keyix, 0));
1853 }
1854
1855 static void
1856 rsu_delete_key_pair_cb(void *arg, int pending __unused)
1857 {
1858 struct rsu_softc *sc = arg;
1859 int i;
1860
1861 RSU_DELKEY_BMAP_LOCK(sc);
1862 for (i = IEEE80211_WEP_NKID; i < R92S_CAM_ENTRY_LIMIT; i++) {
1863 if (isset(sc->free_keys_bmap, i)) {
1864 RSU_DELKEY_BMAP_UNLOCK(sc);
1865
1866 RSU_LOCK(sc);
1867 RSU_DPRINTF(sc, RSU_DEBUG_KEY,
1868 "%s: calling rsu_delete_key() with keyix = %d\n",
1869 __func__, i);
1870 (void) rsu_delete_key(sc, i);
1871 RSU_UNLOCK(sc);
1872
1873 RSU_DELKEY_BMAP_LOCK(sc);
1874 clrbit(sc->free_keys_bmap, i);
1875
1876 /* bmap can be changed */
1877 i = IEEE80211_WEP_NKID - 1;
1878 continue;
1879 }
1880 }
1881 RSU_DELKEY_BMAP_UNLOCK(sc);
1882 }
1883
1884 static int
1885 rsu_site_survey(struct rsu_softc *sc, struct ieee80211_scan_ssid *ssid)
1886 {
1887 struct r92s_fw_cmd_sitesurvey cmd;
1888
1889 RSU_ASSERT_LOCKED(sc);
1890
1891 memset(&cmd, 0, sizeof(cmd));
1892 /* TODO: passive channels? */
1893 if (sc->sc_active_scan)
1894 cmd.active = htole32(1);
1895 cmd.limit = htole32(48);
1896
1897 if (ssid != NULL) {
1898 sc->sc_extra_scan = 1;
1899 cmd.ssidlen = htole32(ssid->len);
1900 memcpy(cmd.ssid, ssid->ssid, ssid->len);
1901 }
1902 #ifdef USB_DEBUG
1903 if (rsu_debug & (RSU_DEBUG_SCAN | RSU_DEBUG_FWCMD)) {
1904 device_printf(sc->sc_dev,
1905 "sending site survey command, active %d",
1906 le32toh(cmd.active));
1907 if (ssid != NULL) {
1908 printf(", ssid: ");
1909 ieee80211_print_essid(cmd.ssid, le32toh(cmd.ssidlen));
1910 }
1911 printf("\n");
1912 }
1913 #endif
1914 return (rsu_fw_cmd(sc, R92S_CMD_SITE_SURVEY, &cmd, sizeof(cmd)));
1915 }
1916
1917 static int
1918 rsu_join_bss(struct rsu_softc *sc, struct ieee80211_node *ni)
1919 {
1920 struct ieee80211com *ic = &sc->sc_ic;
1921 struct ieee80211vap *vap = ni->ni_vap;
1922 struct ndis_wlan_bssid_ex *bss;
1923 struct ndis_802_11_fixed_ies *fixed;
1924 struct r92s_fw_cmd_auth auth;
1925 uint8_t buf[sizeof(*bss) + 128] __aligned(4);
1926 uint8_t *frm;
1927 uint8_t opmode;
1928 int error;
1929
1930 RSU_ASSERT_LOCKED(sc);
1931
1932 /* Let the FW decide the opmode based on the capinfo field. */
1933 opmode = NDIS802_11AUTOUNKNOWN;
1934 RSU_DPRINTF(sc, RSU_DEBUG_RESET,
1935 "%s: setting operating mode to %d\n",
1936 __func__, opmode);
1937 error = rsu_fw_cmd(sc, R92S_CMD_SET_OPMODE, &opmode, sizeof(opmode));
1938 if (error != 0)
1939 return (error);
1940
1941 memset(&auth, 0, sizeof(auth));
1942 if (vap->iv_flags & IEEE80211_F_WPA) {
1943 auth.mode = R92S_AUTHMODE_WPA;
1944 auth.dot1x = (ni->ni_authmode == IEEE80211_AUTH_8021X);
1945 } else
1946 auth.mode = R92S_AUTHMODE_OPEN;
1947 RSU_DPRINTF(sc, RSU_DEBUG_RESET,
1948 "%s: setting auth mode to %d\n",
1949 __func__, auth.mode);
1950 error = rsu_fw_cmd(sc, R92S_CMD_SET_AUTH, &auth, sizeof(auth));
1951 if (error != 0)
1952 return (error);
1953
1954 memset(buf, 0, sizeof(buf));
1955 bss = (struct ndis_wlan_bssid_ex *)buf;
1956 IEEE80211_ADDR_COPY(bss->macaddr, ni->ni_bssid);
1957 bss->ssid.ssidlen = htole32(ni->ni_esslen);
1958 memcpy(bss->ssid.ssid, ni->ni_essid, ni->ni_esslen);
1959 if (vap->iv_flags & (IEEE80211_F_PRIVACY | IEEE80211_F_WPA))
1960 bss->privacy = htole32(1);
1961 bss->rssi = htole32(ni->ni_avgrssi);
1962 if (ic->ic_curmode == IEEE80211_MODE_11B)
1963 bss->networktype = htole32(NDIS802_11DS);
1964 else
1965 bss->networktype = htole32(NDIS802_11OFDM24);
1966 bss->config.len = htole32(sizeof(bss->config));
1967 bss->config.bintval = htole32(ni->ni_intval);
1968 bss->config.dsconfig = htole32(ieee80211_chan2ieee(ic, ni->ni_chan));
1969 bss->inframode = htole32(NDIS802_11INFRASTRUCTURE);
1970 /* XXX verify how this is supposed to look! */
1971 memcpy(bss->supprates, ni->ni_rates.rs_rates,
1972 ni->ni_rates.rs_nrates);
1973 /* Write the fixed fields of the beacon frame. */
1974 fixed = (struct ndis_802_11_fixed_ies *)&bss[1];
1975 memcpy(&fixed->tstamp, ni->ni_tstamp.data, 8);
1976 fixed->bintval = htole16(ni->ni_intval);
1977 fixed->capabilities = htole16(ni->ni_capinfo);
1978 /* Write IEs to be included in the association request. */
1979 frm = (uint8_t *)&fixed[1];
1980 frm = ieee80211_add_rsn(frm, vap);
1981 frm = ieee80211_add_wpa(frm, vap);
1982 frm = ieee80211_add_qos(frm, ni);
1983 if ((ic->ic_flags & IEEE80211_F_WME) &&
1984 (ni->ni_ies.wme_ie != NULL))
1985 frm = ieee80211_add_wme_info(frm, &ic->ic_wme, ni);
1986 if (ni->ni_flags & IEEE80211_NODE_HT) {
1987 frm = ieee80211_add_htcap(frm, ni);
1988 frm = ieee80211_add_htinfo(frm, ni);
1989 }
1990 bss->ieslen = htole32(frm - (uint8_t *)fixed);
1991 bss->len = htole32(((frm - buf) + 3) & ~3);
1992 RSU_DPRINTF(sc, RSU_DEBUG_RESET | RSU_DEBUG_FWCMD,
1993 "%s: sending join bss command to %s chan %d\n",
1994 __func__,
1995 ether_sprintf(bss->macaddr), le32toh(bss->config.dsconfig));
1996 return (rsu_fw_cmd(sc, R92S_CMD_JOIN_BSS, buf, sizeof(buf)));
1997 }
1998
1999 static int
2000 rsu_disconnect(struct rsu_softc *sc)
2001 {
2002 uint32_t zero = 0; /* :-) */
2003
2004 /* Disassociate from our current BSS. */
2005 RSU_DPRINTF(sc, RSU_DEBUG_STATE | RSU_DEBUG_FWCMD,
2006 "%s: sending disconnect command\n", __func__);
2007 return (rsu_fw_cmd(sc, R92S_CMD_DISCONNECT, &zero, sizeof(zero)));
2008 }
2009
2010 /*
2011 * Map the hardware provided RSSI value to a signal level.
2012 * For the most part it's just something we divide by and cap
2013 * so it doesn't overflow the representation by net80211.
2014 */
2015 static int
2016 rsu_hwrssi_to_rssi(struct rsu_softc *sc, int hw_rssi)
2017 {
2018 int v;
2019
2020 if (hw_rssi == 0)
2021 return (0);
2022 v = hw_rssi >> 4;
2023 if (v > 80)
2024 v = 80;
2025 return (v);
2026 }
2027
2028 CTASSERT(MCLBYTES > sizeof(struct ieee80211_frame));
2029
2030 static void
2031 rsu_event_survey(struct rsu_softc *sc, uint8_t *buf, int len)
2032 {
2033 struct ieee80211com *ic = &sc->sc_ic;
2034 struct ieee80211_frame *wh;
2035 struct ndis_wlan_bssid_ex *bss;
2036 struct ieee80211_rx_stats rxs;
2037 struct mbuf *m;
2038 uint32_t ieslen;
2039 uint32_t pktlen;
2040
2041 if (__predict_false(len < sizeof(*bss)))
2042 return;
2043 bss = (struct ndis_wlan_bssid_ex *)buf;
2044 ieslen = le32toh(bss->ieslen);
2045 /* range check length of information element */
2046 if (__predict_false(ieslen > (uint32_t)(len - sizeof(*bss))))
2047 return;
2048
2049 RSU_DPRINTF(sc, RSU_DEBUG_SCAN,
2050 "%s: found BSS %s: len=%d chan=%d inframode=%d "
2051 "networktype=%d privacy=%d, RSSI=%d\n",
2052 __func__,
2053 ether_sprintf(bss->macaddr), ieslen,
2054 le32toh(bss->config.dsconfig), le32toh(bss->inframode),
2055 le32toh(bss->networktype), le32toh(bss->privacy),
2056 le32toh(bss->rssi));
2057
2058 /* Build a fake beacon frame to let net80211 do all the parsing. */
2059 /* XXX TODO: just call the new scan API methods! */
2060 if (__predict_false(ieslen > (size_t)(MCLBYTES - sizeof(*wh))))
2061 return;
2062 pktlen = sizeof(*wh) + ieslen;
2063 m = m_get2(pktlen, M_NOWAIT, MT_DATA, M_PKTHDR);
2064 if (__predict_false(m == NULL))
2065 return;
2066 wh = mtod(m, struct ieee80211_frame *);
2067 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
2068 IEEE80211_FC0_SUBTYPE_BEACON;
2069 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
2070 USETW(wh->i_dur, 0);
2071 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr);
2072 IEEE80211_ADDR_COPY(wh->i_addr2, bss->macaddr);
2073 IEEE80211_ADDR_COPY(wh->i_addr3, bss->macaddr);
2074 *(uint16_t *)wh->i_seq = 0;
2075 memcpy(&wh[1], (uint8_t *)&bss[1], ieslen);
2076
2077 /* Finalize mbuf. */
2078 m->m_pkthdr.len = m->m_len = pktlen;
2079
2080 /* Set channel flags for input path */
2081 bzero(&rxs, sizeof(rxs));
2082 rxs.r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ;
2083 rxs.r_flags |= IEEE80211_R_BAND;
2084 rxs.r_flags |= IEEE80211_R_NF | IEEE80211_R_RSSI;
2085 rxs.c_ieee = le32toh(bss->config.dsconfig);
2086 rxs.c_freq = ieee80211_ieee2mhz(rxs.c_ieee, IEEE80211_CHAN_2GHZ);
2087 rxs.c_band = IEEE80211_CHAN_2GHZ;
2088 /* This is a number from 0..100; so let's just divide it down a bit */
2089 rxs.c_rssi = le32toh(bss->rssi) / 2;
2090 rxs.c_nf = -96;
2091 if (ieee80211_add_rx_params(m, &rxs) == 0)
2092 return;
2093
2094 /* XXX avoid a LOR */
2095 RSU_UNLOCK(sc);
2096 ieee80211_input_mimo_all(ic, m);
2097 RSU_LOCK(sc);
2098 }
2099
2100 static void
2101 rsu_event_join_bss(struct rsu_softc *sc, uint8_t *buf, int len)
2102 {
2103 struct ieee80211com *ic = &sc->sc_ic;
2104 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2105 struct ieee80211_node *ni = vap->iv_bss;
2106 struct r92s_event_join_bss *rsp;
2107 uint32_t tmp;
2108 int res;
2109
2110 if (__predict_false(len < sizeof(*rsp)))
2111 return;
2112 rsp = (struct r92s_event_join_bss *)buf;
2113 res = (int)le32toh(rsp->join_res);
2114
2115 RSU_DPRINTF(sc, RSU_DEBUG_STATE | RSU_DEBUG_FWCMD,
2116 "%s: Rx join BSS event len=%d res=%d\n",
2117 __func__, len, res);
2118
2119 /*
2120 * XXX Don't do this; there's likely a better way to tell
2121 * the caller we failed.
2122 */
2123 if (res <= 0) {
2124 RSU_UNLOCK(sc);
2125 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
2126 RSU_LOCK(sc);
2127 return;
2128 }
2129
2130 tmp = le32toh(rsp->associd);
2131 if (tmp >= vap->iv_max_aid) {
2132 RSU_DPRINTF(sc, RSU_DEBUG_ANY, "Assoc ID overflow\n");
2133 tmp = 1;
2134 }
2135 RSU_DPRINTF(sc, RSU_DEBUG_STATE | RSU_DEBUG_FWCMD,
2136 "%s: associated with %s associd=%d\n",
2137 __func__, ether_sprintf(rsp->bss.macaddr), tmp);
2138 /* XXX is this required? What's the top two bits for again? */
2139 ni->ni_associd = tmp | 0xc000;
2140
2141 /* Refresh Rx filter (was changed by firmware). */
2142 sc->sc_vap_is_running = 1;
2143 rsu_rxfilter_refresh(sc);
2144
2145 RSU_UNLOCK(sc);
2146 ieee80211_new_state(vap, IEEE80211_S_RUN,
2147 IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2148 RSU_LOCK(sc);
2149 }
2150
2151 static void
2152 rsu_event_addba_req_report(struct rsu_softc *sc, uint8_t *buf, int len)
2153 {
2154 struct ieee80211com *ic = &sc->sc_ic;
2155 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2156 struct r92s_add_ba_event *ba = (void *) buf;
2157 struct ieee80211_node *ni;
2158
2159 if (len < sizeof(*ba)) {
2160 device_printf(sc->sc_dev, "%s: short read (%d)\n", __func__, len);
2161 return;
2162 }
2163
2164 if (vap == NULL)
2165 return;
2166
2167 RSU_DPRINTF(sc, RSU_DEBUG_AMPDU, "%s: mac=%s, tid=%d, ssn=%d\n",
2168 __func__,
2169 ether_sprintf(ba->mac_addr),
2170 (int) ba->tid,
2171 (int) le16toh(ba->ssn));
2172
2173 /* XXX do node lookup; this is STA specific */
2174
2175 ni = ieee80211_ref_node(vap->iv_bss);
2176 ieee80211_ampdu_rx_start_ext(ni, ba->tid, le16toh(ba->ssn) >> 4, 32);
2177 ieee80211_free_node(ni);
2178 }
2179
2180 static void
2181 rsu_rx_event(struct rsu_softc *sc, uint8_t code, uint8_t *buf, int len)
2182 {
2183 struct ieee80211com *ic = &sc->sc_ic;
2184 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2185
2186 RSU_DPRINTF(sc, RSU_DEBUG_RX | RSU_DEBUG_FWCMD,
2187 "%s: Rx event code=%d len=%d\n", __func__, code, len);
2188 switch (code) {
2189 case R92S_EVT_SURVEY:
2190 rsu_event_survey(sc, buf, len);
2191 break;
2192 case R92S_EVT_SURVEY_DONE:
2193 RSU_DPRINTF(sc, RSU_DEBUG_SCAN,
2194 "%s: %s scan done, found %d BSS\n",
2195 __func__, sc->sc_extra_scan ? "direct" : "broadcast",
2196 le32toh(*(uint32_t *)buf));
2197 if (sc->sc_extra_scan == 1) {
2198 /* Send broadcast probe request. */
2199 sc->sc_extra_scan = 0;
2200 if (vap != NULL && rsu_site_survey(sc, NULL) != 0) {
2201 RSU_UNLOCK(sc);
2202 ieee80211_cancel_scan(vap);
2203 RSU_LOCK(sc);
2204 }
2205 break;
2206 }
2207 if (vap != NULL) {
2208 RSU_UNLOCK(sc);
2209 ieee80211_scan_done(vap);
2210 RSU_LOCK(sc);
2211 }
2212 break;
2213 case R92S_EVT_JOIN_BSS:
2214 if (vap->iv_state == IEEE80211_S_AUTH)
2215 rsu_event_join_bss(sc, buf, len);
2216 break;
2217 case R92S_EVT_DEL_STA:
2218 RSU_DPRINTF(sc, RSU_DEBUG_FWCMD | RSU_DEBUG_STATE,
2219 "%s: disassociated from %s\n", __func__,
2220 ether_sprintf(buf));
2221 if (vap->iv_state == IEEE80211_S_RUN &&
2222 IEEE80211_ADDR_EQ(vap->iv_bss->ni_bssid, buf)) {
2223 RSU_UNLOCK(sc);
2224 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
2225 RSU_LOCK(sc);
2226 }
2227 break;
2228 case R92S_EVT_WPS_PBC:
2229 RSU_DPRINTF(sc, RSU_DEBUG_RX | RSU_DEBUG_FWCMD,
2230 "%s: WPS PBC pushed.\n", __func__);
2231 break;
2232 case R92S_EVT_FWDBG:
2233 buf[60] = '\0';
2234 RSU_DPRINTF(sc, RSU_DEBUG_FWDBG, "FWDBG: %s\n", (char *)buf);
2235 break;
2236 case R92S_EVT_ADDBA_REQ_REPORT:
2237 rsu_event_addba_req_report(sc, buf, len);
2238 break;
2239 default:
2240 device_printf(sc->sc_dev, "%s: unhandled code (%d)\n", __func__, code);
2241 break;
2242 }
2243 }
2244
2245 static void
2246 rsu_rx_multi_event(struct rsu_softc *sc, uint8_t *buf, int len)
2247 {
2248 struct r92s_fw_cmd_hdr *cmd;
2249 int cmdsz;
2250
2251 RSU_DPRINTF(sc, RSU_DEBUG_RX, "%s: Rx events len=%d\n", __func__, len);
2252
2253 /* Skip Rx status. */
2254 buf += sizeof(struct r92s_rx_stat);
2255 len -= sizeof(struct r92s_rx_stat);
2256
2257 /* Process all events. */
2258 for (;;) {
2259 /* Check that command header fits. */
2260 if (__predict_false(len < sizeof(*cmd)))
2261 break;
2262 cmd = (struct r92s_fw_cmd_hdr *)buf;
2263 /* Check that command payload fits. */
2264 cmdsz = le16toh(cmd->len);
2265 if (__predict_false(len < sizeof(*cmd) + cmdsz))
2266 break;
2267
2268 /* Process firmware event. */
2269 rsu_rx_event(sc, cmd->code, (uint8_t *)&cmd[1], cmdsz);
2270
2271 if (!(cmd->seq & R92S_FW_CMD_MORE))
2272 break;
2273 buf += sizeof(*cmd) + cmdsz;
2274 len -= sizeof(*cmd) + cmdsz;
2275 }
2276 }
2277
2278 static int8_t
2279 rsu_get_rssi(struct rsu_softc *sc, int rate, void *physt)
2280 {
2281 static const int8_t cckoff[] = { 14, -2, -20, -40 };
2282 struct r92s_rx_phystat *phy;
2283 struct r92s_rx_cck *cck;
2284 uint8_t rpt;
2285 int8_t rssi;
2286
2287 if (rate <= 3) {
2288 cck = (struct r92s_rx_cck *)physt;
2289 rpt = (cck->agc_rpt >> 6) & 0x3;
2290 rssi = cck->agc_rpt & 0x3e;
2291 rssi = cckoff[rpt] - rssi;
2292 } else { /* OFDM/HT. */
2293 phy = (struct r92s_rx_phystat *)physt;
2294 rssi = ((le32toh(phy->phydw1) >> 1) & 0x7f) - 106;
2295 }
2296 return (rssi);
2297 }
2298
2299 static struct mbuf *
2300 rsu_rx_copy_to_mbuf(struct rsu_softc *sc, struct r92s_rx_stat *stat,
2301 int totlen)
2302 {
2303 struct ieee80211com *ic = &sc->sc_ic;
2304 struct mbuf *m;
2305 uint32_t rxdw0;
2306 int pktlen;
2307
2308 rxdw0 = le32toh(stat->rxdw0);
2309 if (__predict_false(rxdw0 & (R92S_RXDW0_CRCERR | R92S_RXDW0_ICVERR))) {
2310 RSU_DPRINTF(sc, RSU_DEBUG_RX,
2311 "%s: RX flags error (%s)\n", __func__,
2312 rxdw0 & R92S_RXDW0_CRCERR ? "CRC" : "ICV");
2313 goto fail;
2314 }
2315
2316 pktlen = MS(rxdw0, R92S_RXDW0_PKTLEN);
2317 if (__predict_false(pktlen < sizeof (struct ieee80211_frame_ack))) {
2318 RSU_DPRINTF(sc, RSU_DEBUG_RX,
2319 "%s: frame is too short: %d\n", __func__, pktlen);
2320 goto fail;
2321 }
2322
2323 m = m_get2(totlen, M_NOWAIT, MT_DATA, M_PKTHDR);
2324 if (__predict_false(m == NULL)) {
2325 device_printf(sc->sc_dev,
2326 "%s: could not allocate RX mbuf, totlen %d\n",
2327 __func__, totlen);
2328 goto fail;
2329 }
2330
2331 /* Finalize mbuf. */
2332 memcpy(mtod(m, uint8_t *), (uint8_t *)stat, totlen);
2333 m->m_pkthdr.len = m->m_len = totlen;
2334
2335 return (m);
2336 fail:
2337 counter_u64_add(ic->ic_ierrors, 1);
2338 return (NULL);
2339 }
2340
2341 static uint32_t
2342 rsu_get_tsf_low(struct rsu_softc *sc)
2343 {
2344 return (rsu_read_4(sc, R92S_TSFTR));
2345 }
2346
2347 static uint32_t
2348 rsu_get_tsf_high(struct rsu_softc *sc)
2349 {
2350 return (rsu_read_4(sc, R92S_TSFTR + 4));
2351 }
2352
2353 static struct ieee80211_node *
2354 rsu_rx_frame(struct rsu_softc *sc, struct mbuf *m)
2355 {
2356 struct ieee80211com *ic = &sc->sc_ic;
2357 struct ieee80211_frame_min *wh;
2358 struct ieee80211_rx_stats rxs;
2359 struct r92s_rx_stat *stat;
2360 uint32_t rxdw0, rxdw3;
2361 uint8_t cipher, rate;
2362 int infosz;
2363 int rssi;
2364
2365 stat = mtod(m, struct r92s_rx_stat *);
2366 rxdw0 = le32toh(stat->rxdw0);
2367 rxdw3 = le32toh(stat->rxdw3);
2368
2369 rate = MS(rxdw3, R92S_RXDW3_RATE);
2370 cipher = MS(rxdw0, R92S_RXDW0_CIPHER);
2371 infosz = MS(rxdw0, R92S_RXDW0_INFOSZ) * 8;
2372
2373 /* Get RSSI from PHY status descriptor if present. */
2374 if (infosz != 0 && (rxdw0 & R92S_RXDW0_PHYST))
2375 rssi = rsu_get_rssi(sc, rate, &stat[1]);
2376 else {
2377 /* Cheat and get the last calibrated RSSI */
2378 rssi = rsu_hwrssi_to_rssi(sc, sc->sc_currssi);
2379 }
2380
2381 /* Hardware does Rx TCP checksum offload. */
2382 /*
2383 * This flag can be set for some other
2384 * (e.g., EAPOL) frame types, so don't rely on it.
2385 */
2386 if (rxdw3 & R92S_RXDW3_TCPCHKVALID) {
2387 RSU_DPRINTF(sc, RSU_DEBUG_RX,
2388 "%s: TCP/IP checksums: %schecked / %schecked\n",
2389 __func__,
2390 (rxdw3 & R92S_RXDW3_TCPCHKRPT) ? "" : "not ",
2391 (rxdw3 & R92S_RXDW3_IPCHKRPT) ? "" : "not ");
2392
2393 /*
2394 * 'IP header checksum valid' bit will not be set if
2395 * the frame was not checked / has incorrect checksum /
2396 * does not have checksum (IPv6).
2397 *
2398 * NB: if DF bit is not set then frame will not be checked.
2399 */
2400 if (rxdw3 & R92S_RXDW3_IPCHKRPT) {
2401 m->m_pkthdr.csum_flags = CSUM_IP_CHECKED;
2402 m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2403 }
2404
2405 /*
2406 * This is independent of the above check.
2407 */
2408 if (rxdw3 & R92S_RXDW3_TCPCHKRPT) {
2409 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
2410 m->m_pkthdr.csum_flags |= CSUM_PSEUDO_HDR;
2411 m->m_pkthdr.csum_data = 0xffff;
2412 }
2413 }
2414
2415 /* RX flags */
2416
2417 /* Set channel flags for input path */
2418 bzero(&rxs, sizeof(rxs));
2419
2420 /* normal RSSI */
2421 rxs.r_flags |= IEEE80211_R_NF | IEEE80211_R_RSSI;
2422 rxs.c_rssi = rssi;
2423 rxs.c_nf = -96;
2424
2425 /* Rate */
2426 if (rate < 12) {
2427 rxs.c_rate = ridx2rate[rate];
2428 if (RSU_RATE_IS_CCK(rate))
2429 rxs.c_pktflags |= IEEE80211_RX_F_CCK;
2430 else
2431 rxs.c_pktflags |= IEEE80211_RX_F_OFDM;
2432 } else {
2433 rxs.c_rate = IEEE80211_RATE_MCS | (rate - 12);
2434 rxs.c_pktflags |= IEEE80211_RX_F_HT;
2435 }
2436
2437 if (ieee80211_radiotap_active(ic)) {
2438 struct rsu_rx_radiotap_header *tap = &sc->sc_rxtap;
2439
2440 /* Map HW rate index to 802.11 rate. */
2441 tap->wr_flags = 0; /* TODO */
2442 tap->wr_tsft = rsu_get_tsf_high(sc);
2443 if (le32toh(stat->tsf_low) > rsu_get_tsf_low(sc))
2444 tap->wr_tsft--;
2445 tap->wr_tsft = (uint64_t)htole32(tap->wr_tsft) << 32;
2446 tap->wr_tsft += stat->tsf_low;
2447
2448 tap->wr_rate = rxs.c_rate;
2449 tap->wr_dbm_antsignal = rssi;
2450 };
2451
2452 (void) ieee80211_add_rx_params(m, &rxs);
2453
2454 /* Drop descriptor. */
2455 m_adj(m, sizeof(*stat) + infosz);
2456 wh = mtod(m, struct ieee80211_frame_min *);
2457 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) &&
2458 cipher != R92S_KEY_ALGO_NONE) {
2459 m->m_flags |= M_WEP;
2460 }
2461
2462 RSU_DPRINTF(sc, RSU_DEBUG_RX,
2463 "%s: Rx frame len %d, rate %d, infosz %d\n",
2464 __func__, m->m_len, rate, infosz);
2465
2466 if (m->m_len >= sizeof(*wh))
2467 return (ieee80211_find_rxnode(ic, wh));
2468
2469 return (NULL);
2470 }
2471
2472 static struct mbuf *
2473 rsu_rx_multi_frame(struct rsu_softc *sc, uint8_t *buf, int len)
2474 {
2475 struct r92s_rx_stat *stat;
2476 uint32_t rxdw0;
2477 int totlen, pktlen, infosz, npkts;
2478 struct mbuf *m, *m0 = NULL, *prevm = NULL;
2479
2480 /*
2481 * don't pass packets to the ieee80211 framework if the driver isn't
2482 * RUNNING.
2483 */
2484 if (!sc->sc_running)
2485 return (NULL);
2486
2487 /* Get the number of encapsulated frames. */
2488 stat = (struct r92s_rx_stat *)buf;
2489 npkts = MS(le32toh(stat->rxdw2), R92S_RXDW2_PKTCNT);
2490 RSU_DPRINTF(sc, RSU_DEBUG_RX,
2491 "%s: Rx %d frames in one chunk\n", __func__, npkts);
2492
2493 /* Process all of them. */
2494 while (npkts-- > 0) {
2495 if (__predict_false(len < sizeof(*stat)))
2496 break;
2497 stat = (struct r92s_rx_stat *)buf;
2498 rxdw0 = le32toh(stat->rxdw0);
2499
2500 pktlen = MS(rxdw0, R92S_RXDW0_PKTLEN);
2501 if (__predict_false(pktlen == 0))
2502 break;
2503
2504 infosz = MS(rxdw0, R92S_RXDW0_INFOSZ) * 8;
2505
2506 /* Make sure everything fits in xfer. */
2507 totlen = sizeof(*stat) + infosz + pktlen;
2508 if (__predict_false(totlen > len))
2509 break;
2510
2511 /* Process 802.11 frame. */
2512 m = rsu_rx_copy_to_mbuf(sc, stat, totlen);
2513 if (m0 == NULL)
2514 m0 = m;
2515 if (prevm == NULL)
2516 prevm = m;
2517 else {
2518 prevm->m_next = m;
2519 prevm = m;
2520 }
2521 /* Next chunk is 128-byte aligned. */
2522 totlen = (totlen + 127) & ~127;
2523 buf += totlen;
2524 len -= totlen;
2525 }
2526
2527 return (m0);
2528 }
2529
2530 static struct mbuf *
2531 rsu_rxeof(struct usb_xfer *xfer, struct rsu_data *data)
2532 {
2533 struct rsu_softc *sc = data->sc;
2534 struct ieee80211com *ic = &sc->sc_ic;
2535 struct r92s_rx_stat *stat;
2536 int len;
2537
2538 usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
2539
2540 if (__predict_false(len < sizeof(*stat))) {
2541 RSU_DPRINTF(sc, RSU_DEBUG_RX, "xfer too short %d\n", len);
2542 counter_u64_add(ic->ic_ierrors, 1);
2543 return (NULL);
2544 }
2545 /* Determine if it is a firmware C2H event or an 802.11 frame. */
2546 stat = (struct r92s_rx_stat *)data->buf;
2547 if ((le32toh(stat->rxdw1) & 0x1ff) == 0x1ff) {
2548 rsu_rx_multi_event(sc, data->buf, len);
2549 /* No packets to process. */
2550 return (NULL);
2551 } else
2552 return (rsu_rx_multi_frame(sc, data->buf, len));
2553 }
2554
2555 static void
2556 rsu_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2557 {
2558 struct epoch_tracker et;
2559 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2560 struct ieee80211com *ic = &sc->sc_ic;
2561 struct ieee80211_node *ni;
2562 struct mbuf *m = NULL, *next;
2563 struct rsu_data *data;
2564
2565 RSU_ASSERT_LOCKED(sc);
2566
2567 switch (USB_GET_STATE(xfer)) {
2568 case USB_ST_TRANSFERRED:
2569 data = STAILQ_FIRST(&sc->sc_rx_active);
2570 if (data == NULL)
2571 goto tr_setup;
2572 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2573 m = rsu_rxeof(xfer, data);
2574 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2575 /* FALLTHROUGH */
2576 case USB_ST_SETUP:
2577 tr_setup:
2578 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2579 if (data == NULL) {
2580 KASSERT(m == NULL, ("mbuf isn't NULL"));
2581 return;
2582 }
2583 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2584 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2585 usbd_xfer_set_frame_data(xfer, 0, data->buf,
2586 usbd_xfer_max_len(xfer));
2587 usbd_transfer_submit(xfer);
2588 /*
2589 * To avoid LOR we should unlock our private mutex here to call
2590 * ieee80211_input() because here is at the end of a USB
2591 * callback and safe to unlock.
2592 */
2593 NET_EPOCH_ENTER(et);
2594 while (m != NULL) {
2595 next = m->m_next;
2596 m->m_next = NULL;
2597
2598 ni = rsu_rx_frame(sc, m);
2599 RSU_UNLOCK(sc);
2600
2601 if (ni != NULL) {
2602 if (ni->ni_flags & IEEE80211_NODE_HT)
2603 m->m_flags |= M_AMPDU;
2604 (void)ieee80211_input_mimo(ni, m);
2605 ieee80211_free_node(ni);
2606 } else
2607 (void)ieee80211_input_mimo_all(ic, m);
2608
2609 RSU_LOCK(sc);
2610 m = next;
2611 }
2612 NET_EPOCH_EXIT(et);
2613 break;
2614 default:
2615 /* needs it to the inactive queue due to a error. */
2616 data = STAILQ_FIRST(&sc->sc_rx_active);
2617 if (data != NULL) {
2618 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2619 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2620 }
2621 if (error != USB_ERR_CANCELLED) {
2622 usbd_xfer_set_stall(xfer);
2623 counter_u64_add(ic->ic_ierrors, 1);
2624 goto tr_setup;
2625 }
2626 break;
2627 }
2628
2629 }
2630
2631 static void
2632 rsu_txeof(struct usb_xfer *xfer, struct rsu_data *data)
2633 {
2634 #ifdef USB_DEBUG
2635 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2636 #endif
2637
2638 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE, "%s: called; data=%p\n",
2639 __func__,
2640 data);
2641
2642 if (data->m) {
2643 /* XXX status? */
2644 ieee80211_tx_complete(data->ni, data->m, 0);
2645 data->m = NULL;
2646 data->ni = NULL;
2647 }
2648 }
2649
2650 static void
2651 rsu_bulk_tx_callback_sub(struct usb_xfer *xfer, usb_error_t error,
2652 uint8_t which)
2653 {
2654 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2655 struct ieee80211com *ic = &sc->sc_ic;
2656 struct rsu_data *data;
2657
2658 RSU_ASSERT_LOCKED(sc);
2659
2660 switch (USB_GET_STATE(xfer)) {
2661 case USB_ST_TRANSFERRED:
2662 data = STAILQ_FIRST(&sc->sc_tx_active[which]);
2663 if (data == NULL)
2664 goto tr_setup;
2665 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE, "%s: transfer done %p\n",
2666 __func__, data);
2667 STAILQ_REMOVE_HEAD(&sc->sc_tx_active[which], next);
2668 rsu_txeof(xfer, data);
2669 rsu_freebuf(sc, data);
2670 /* FALLTHROUGH */
2671 case USB_ST_SETUP:
2672 tr_setup:
2673 data = STAILQ_FIRST(&sc->sc_tx_pending[which]);
2674 if (data == NULL) {
2675 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE,
2676 "%s: empty pending queue sc %p\n", __func__, sc);
2677 return;
2678 }
2679 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending[which], next);
2680 STAILQ_INSERT_TAIL(&sc->sc_tx_active[which], data, next);
2681 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2682 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE,
2683 "%s: submitting transfer %p\n",
2684 __func__,
2685 data);
2686 usbd_transfer_submit(xfer);
2687 break;
2688 default:
2689 data = STAILQ_FIRST(&sc->sc_tx_active[which]);
2690 if (data != NULL) {
2691 STAILQ_REMOVE_HEAD(&sc->sc_tx_active[which], next);
2692 rsu_txeof(xfer, data);
2693 rsu_freebuf(sc, data);
2694 }
2695 counter_u64_add(ic->ic_oerrors, 1);
2696
2697 if (error != USB_ERR_CANCELLED) {
2698 usbd_xfer_set_stall(xfer);
2699 goto tr_setup;
2700 }
2701 break;
2702 }
2703
2704 /*
2705 * XXX TODO: if the queue is low, flush out FF TX frames.
2706 * Remember to unlock the driver for now; net80211 doesn't
2707 * defer it for us.
2708 */
2709 }
2710
2711 static void
2712 rsu_bulk_tx_callback_be_bk(struct usb_xfer *xfer, usb_error_t error)
2713 {
2714 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2715
2716 rsu_bulk_tx_callback_sub(xfer, error, RSU_BULK_TX_BE_BK);
2717
2718 /* This kicks the TX taskqueue */
2719 rsu_start(sc);
2720 }
2721
2722 static void
2723 rsu_bulk_tx_callback_vi_vo(struct usb_xfer *xfer, usb_error_t error)
2724 {
2725 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2726
2727 rsu_bulk_tx_callback_sub(xfer, error, RSU_BULK_TX_VI_VO);
2728
2729 /* This kicks the TX taskqueue */
2730 rsu_start(sc);
2731 }
2732
2733 static void
2734 rsu_bulk_tx_callback_h2c(struct usb_xfer *xfer, usb_error_t error)
2735 {
2736 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2737
2738 rsu_bulk_tx_callback_sub(xfer, error, RSU_BULK_TX_H2C);
2739
2740 /* This kicks the TX taskqueue */
2741 rsu_start(sc);
2742 }
2743
2744 /*
2745 * Transmit the given frame.
2746 *
2747 * This doesn't free the node or mbuf upon failure.
2748 */
2749 static int
2750 rsu_tx_start(struct rsu_softc *sc, struct ieee80211_node *ni,
2751 struct mbuf *m0, struct rsu_data *data)
2752 {
2753 const struct ieee80211_txparam *tp = ni->ni_txparms;
2754 struct ieee80211vap *vap = ni->ni_vap;
2755 struct ieee80211_frame *wh;
2756 struct ieee80211_key *k = NULL;
2757 struct r92s_tx_desc *txd;
2758 uint8_t rate, ridx, type, cipher, qos;
2759 int prio = 0;
2760 uint8_t which;
2761 int hasqos;
2762 int ismcast;
2763 int xferlen;
2764 int qid;
2765
2766 RSU_ASSERT_LOCKED(sc);
2767
2768 wh = mtod(m0, struct ieee80211_frame *);
2769 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2770 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
2771
2772 RSU_DPRINTF(sc, RSU_DEBUG_TX, "%s: data=%p, m=%p\n",
2773 __func__, data, m0);
2774
2775 /* Choose a TX rate index. */
2776 if (type == IEEE80211_FC0_TYPE_MGT ||
2777 type == IEEE80211_FC0_TYPE_CTL ||
2778 (m0->m_flags & M_EAPOL) != 0)
2779 rate = tp->mgmtrate;
2780 else if (ismcast)
2781 rate = tp->mcastrate;
2782 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
2783 rate = tp->ucastrate;
2784 else
2785 rate = 0;
2786
2787 if (rate != 0)
2788 ridx = rate2ridx(rate);
2789
2790 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
2791 k = ieee80211_crypto_encap(ni, m0);
2792 if (k == NULL) {
2793 device_printf(sc->sc_dev,
2794 "ieee80211_crypto_encap returns NULL.\n");
2795 /* XXX we don't expect the fragmented frames */
2796 return (ENOBUFS);
2797 }
2798 wh = mtod(m0, struct ieee80211_frame *);
2799 }
2800 /* If we have QoS then use it */
2801 /* XXX TODO: mbuf WME/PRI versus TID? */
2802 if (IEEE80211_QOS_HAS_SEQ(wh)) {
2803 /* Has QoS */
2804 prio = M_WME_GETAC(m0);
2805 which = rsu_wme_ac_xfer_map[prio];
2806 hasqos = 1;
2807 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
2808 } else {
2809 /* Non-QoS TID */
2810 /* XXX TODO: tid=0 for non-qos TID? */
2811 which = rsu_wme_ac_xfer_map[WME_AC_BE];
2812 hasqos = 0;
2813 prio = 0;
2814 qos = 0;
2815 }
2816
2817 qid = rsu_ac2qid[prio];
2818 #if 0
2819 switch (type) {
2820 case IEEE80211_FC0_TYPE_CTL:
2821 case IEEE80211_FC0_TYPE_MGT:
2822 which = rsu_wme_ac_xfer_map[WME_AC_VO];
2823 break;
2824 default:
2825 which = rsu_wme_ac_xfer_map[M_WME_GETAC(m0)];
2826 break;
2827 }
2828 hasqos = 0;
2829 #endif
2830
2831 RSU_DPRINTF(sc, RSU_DEBUG_TX, "%s: pri=%d, which=%d, hasqos=%d\n",
2832 __func__,
2833 prio,
2834 which,
2835 hasqos);
2836
2837 /* Fill Tx descriptor. */
2838 txd = (struct r92s_tx_desc *)data->buf;
2839 memset(txd, 0, sizeof(*txd));
2840
2841 txd->txdw0 |= htole32(
2842 SM(R92S_TXDW0_PKTLEN, m0->m_pkthdr.len) |
2843 SM(R92S_TXDW0_OFFSET, sizeof(*txd)) |
2844 R92S_TXDW0_OWN | R92S_TXDW0_FSG | R92S_TXDW0_LSG);
2845
2846 txd->txdw1 |= htole32(
2847 SM(R92S_TXDW1_MACID, R92S_MACID_BSS) | SM(R92S_TXDW1_QSEL, qid));
2848 if (!hasqos)
2849 txd->txdw1 |= htole32(R92S_TXDW1_NONQOS);
2850 if (k != NULL && !(k->wk_flags & IEEE80211_KEY_SWENCRYPT)) {
2851 switch (k->wk_cipher->ic_cipher) {
2852 case IEEE80211_CIPHER_WEP:
2853 cipher = R92S_TXDW1_CIPHER_WEP;
2854 break;
2855 case IEEE80211_CIPHER_TKIP:
2856 cipher = R92S_TXDW1_CIPHER_TKIP;
2857 break;
2858 case IEEE80211_CIPHER_AES_CCM:
2859 cipher = R92S_TXDW1_CIPHER_AES;
2860 break;
2861 default:
2862 cipher = R92S_TXDW1_CIPHER_NONE;
2863 }
2864 txd->txdw1 |= htole32(
2865 SM(R92S_TXDW1_CIPHER, cipher) |
2866 SM(R92S_TXDW1_KEYIDX, k->wk_keyix));
2867 }
2868 /* XXX todo: set AGGEN bit if appropriate? */
2869 txd->txdw2 |= htole32(R92S_TXDW2_BK);
2870 if (ismcast)
2871 txd->txdw2 |= htole32(R92S_TXDW2_BMCAST);
2872
2873 if (!ismcast && (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
2874 IEEE80211_QOS_ACKPOLICY_NOACK)) {
2875 txd->txdw2 |= htole32(R92S_TXDW2_RTY_LMT_ENA);
2876 txd->txdw2 |= htole32(SM(R92S_TXDW2_RTY_LMT, tp->maxretry));
2877 }
2878
2879 /* Force mgmt / mcast / ucast rate if needed. */
2880 if (rate != 0) {
2881 /* Data rate fallback limit (max). */
2882 txd->txdw5 |= htole32(SM(R92S_TXDW5_DATARATE_FB_LMT, 0x1f));
2883 txd->txdw5 |= htole32(SM(R92S_TXDW5_DATARATE, ridx));
2884 txd->txdw4 |= htole32(R92S_TXDW4_DRVRATE);
2885 }
2886
2887 /*
2888 * Firmware will use and increment the sequence number for the
2889 * specified priority.
2890 */
2891 txd->txdw3 |= htole32(SM(R92S_TXDW3_SEQ, prio));
2892
2893 if (ieee80211_radiotap_active_vap(vap)) {
2894 struct rsu_tx_radiotap_header *tap = &sc->sc_txtap;
2895
2896 tap->wt_flags = 0;
2897 ieee80211_radiotap_tx(vap, m0);
2898 }
2899
2900 xferlen = sizeof(*txd) + m0->m_pkthdr.len;
2901 KASSERT(xferlen <= RSU_TXBUFSZ, ("%s: invalid length", __func__));
2902 m_copydata(m0, 0, m0->m_pkthdr.len, (caddr_t)&txd[1]);
2903
2904 data->buflen = xferlen;
2905 data->ni = ni;
2906 data->m = m0;
2907 STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
2908
2909 /* start transfer, if any */
2910 usbd_transfer_start(sc->sc_xfer[which]);
2911 return (0);
2912 }
2913
2914 static int
2915 rsu_transmit(struct ieee80211com *ic, struct mbuf *m)
2916 {
2917 struct rsu_softc *sc = ic->ic_softc;
2918 int error;
2919
2920 RSU_LOCK(sc);
2921 if (!sc->sc_running) {
2922 RSU_UNLOCK(sc);
2923 return (ENXIO);
2924 }
2925
2926 /*
2927 * XXX TODO: ensure that we treat 'm' as a list of frames
2928 * to transmit!
2929 */
2930 error = mbufq_enqueue(&sc->sc_snd, m);
2931 if (error) {
2932 RSU_DPRINTF(sc, RSU_DEBUG_TX,
2933 "%s: mbufq_enable: failed (%d)\n",
2934 __func__,
2935 error);
2936 RSU_UNLOCK(sc);
2937 return (error);
2938 }
2939 RSU_UNLOCK(sc);
2940
2941 /* This kicks the TX taskqueue */
2942 rsu_start(sc);
2943
2944 return (0);
2945 }
2946
2947 static void
2948 rsu_drain_mbufq(struct rsu_softc *sc)
2949 {
2950 struct mbuf *m;
2951 struct ieee80211_node *ni;
2952
2953 RSU_ASSERT_LOCKED(sc);
2954 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
2955 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
2956 m->m_pkthdr.rcvif = NULL;
2957 ieee80211_free_node(ni);
2958 m_freem(m);
2959 }
2960 }
2961
2962 static void
2963 _rsu_start(struct rsu_softc *sc)
2964 {
2965 struct ieee80211_node *ni;
2966 struct rsu_data *bf;
2967 struct mbuf *m;
2968
2969 RSU_ASSERT_LOCKED(sc);
2970
2971 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
2972 bf = rsu_getbuf(sc);
2973 if (bf == NULL) {
2974 RSU_DPRINTF(sc, RSU_DEBUG_TX,
2975 "%s: failed to get buffer\n", __func__);
2976 mbufq_prepend(&sc->sc_snd, m);
2977 break;
2978 }
2979
2980 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
2981 m->m_pkthdr.rcvif = NULL;
2982
2983 if (rsu_tx_start(sc, ni, m, bf) != 0) {
2984 RSU_DPRINTF(sc, RSU_DEBUG_TX,
2985 "%s: failed to transmit\n", __func__);
2986 if_inc_counter(ni->ni_vap->iv_ifp,
2987 IFCOUNTER_OERRORS, 1);
2988 rsu_freebuf(sc, bf);
2989 ieee80211_free_node(ni);
2990 m_freem(m);
2991 break;
2992 }
2993 }
2994 }
2995
2996 static void
2997 rsu_start(struct rsu_softc *sc)
2998 {
2999
3000 taskqueue_enqueue(taskqueue_thread, &sc->tx_task);
3001 }
3002
3003 static int
3004 rsu_ioctl_net(struct ieee80211com *ic, u_long cmd, void *data)
3005 {
3006 struct rsu_softc *sc = ic->ic_softc;
3007 struct ifreq *ifr = (struct ifreq *)data;
3008 int error;
3009
3010 error = 0;
3011 switch (cmd) {
3012 case SIOCSIFCAP:
3013 {
3014 struct ieee80211vap *vap;
3015 int rxmask;
3016
3017 rxmask = ifr->ifr_reqcap & (IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6);
3018
3019 RSU_LOCK(sc);
3020 /* Both RXCSUM bits must be set (or unset). */
3021 if (sc->sc_rx_checksum_enable &&
3022 rxmask != (IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6)) {
3023 rxmask = 0;
3024 sc->sc_rx_checksum_enable = 0;
3025 rsu_rxfilter_set(sc, R92S_RCR_TCP_OFFLD_EN, 0);
3026 } else if (!sc->sc_rx_checksum_enable && rxmask != 0) {
3027 rxmask = IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6;
3028 sc->sc_rx_checksum_enable = 1;
3029 rsu_rxfilter_set(sc, 0, R92S_RCR_TCP_OFFLD_EN);
3030 } else {
3031 /* Nothing to do. */
3032 RSU_UNLOCK(sc);
3033 break;
3034 }
3035 RSU_UNLOCK(sc);
3036
3037 IEEE80211_LOCK(ic); /* XXX */
3038 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
3039 struct ifnet *ifp = vap->iv_ifp;
3040
3041 ifp->if_capenable &=
3042 ~(IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6);
3043 ifp->if_capenable |= rxmask;
3044 }
3045 IEEE80211_UNLOCK(ic);
3046 break;
3047 }
3048 default:
3049 error = ENOTTY; /* for net80211 */
3050 break;
3051 }
3052
3053 return (error);
3054 }
3055
3056 static void
3057 rsu_parent(struct ieee80211com *ic)
3058 {
3059 struct rsu_softc *sc = ic->ic_softc;
3060
3061 if (ic->ic_nrunning > 0) {
3062 if (rsu_init(sc) == 0)
3063 ieee80211_start_all(ic);
3064 else {
3065 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3066 if (vap != NULL)
3067 ieee80211_stop(vap);
3068 }
3069 } else
3070 rsu_stop(sc);
3071 }
3072
3073 /*
3074 * Power on sequence for A-cut adapters.
3075 */
3076 static void
3077 rsu_power_on_acut(struct rsu_softc *sc)
3078 {
3079 uint32_t reg;
3080
3081 rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x53);
3082 rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x57);
3083
3084 /* Enable AFE macro block's bandgap and Mbias. */
3085 rsu_write_1(sc, R92S_AFE_MISC,
3086 rsu_read_1(sc, R92S_AFE_MISC) |
3087 R92S_AFE_MISC_BGEN | R92S_AFE_MISC_MBEN);
3088 /* Enable LDOA15 block. */
3089 rsu_write_1(sc, R92S_LDOA15_CTRL,
3090 rsu_read_1(sc, R92S_LDOA15_CTRL) | R92S_LDA15_EN);
3091
3092 rsu_write_1(sc, R92S_SPS1_CTRL,
3093 rsu_read_1(sc, R92S_SPS1_CTRL) | R92S_SPS1_LDEN);
3094 rsu_ms_delay(sc, 2000);
3095 /* Enable switch regulator block. */
3096 rsu_write_1(sc, R92S_SPS1_CTRL,
3097 rsu_read_1(sc, R92S_SPS1_CTRL) | R92S_SPS1_SWEN);
3098
3099 rsu_write_4(sc, R92S_SPS1_CTRL, 0x00a7b267);
3100
3101 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3102 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) | 0x08);
3103
3104 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3105 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x20);
3106
3107 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3108 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) & ~0x90);
3109
3110 /* Enable AFE clock. */
3111 rsu_write_1(sc, R92S_AFE_XTAL_CTRL + 1,
3112 rsu_read_1(sc, R92S_AFE_XTAL_CTRL + 1) & ~0x04);
3113 /* Enable AFE PLL macro block. */
3114 rsu_write_1(sc, R92S_AFE_PLL_CTRL,
3115 rsu_read_1(sc, R92S_AFE_PLL_CTRL) | 0x11);
3116 /* Attach AFE PLL to MACTOP/BB. */
3117 rsu_write_1(sc, R92S_SYS_ISO_CTRL,
3118 rsu_read_1(sc, R92S_SYS_ISO_CTRL) & ~0x11);
3119
3120 /* Switch to 40MHz clock instead of 80MHz. */
3121 rsu_write_2(sc, R92S_SYS_CLKR,
3122 rsu_read_2(sc, R92S_SYS_CLKR) & ~R92S_SYS_CLKSEL);
3123
3124 /* Enable MAC clock. */
3125 rsu_write_2(sc, R92S_SYS_CLKR,
3126 rsu_read_2(sc, R92S_SYS_CLKR) |
3127 R92S_MAC_CLK_EN | R92S_SYS_CLK_EN);
3128
3129 rsu_write_1(sc, R92S_PMC_FSM, 0x02);
3130
3131 /* Enable digital core and IOREG R/W. */
3132 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3133 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x08);
3134
3135 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3136 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x80);
3137
3138 /* Switch the control path to firmware. */
3139 reg = rsu_read_2(sc, R92S_SYS_CLKR);
3140 reg = (reg & ~R92S_SWHW_SEL) | R92S_FWHW_SEL;
3141 rsu_write_2(sc, R92S_SYS_CLKR, reg);
3142
3143 rsu_write_2(sc, R92S_CR, 0x37fc);
3144
3145 /* Fix USB RX FIFO issue. */
3146 rsu_write_1(sc, 0xfe5c,
3147 rsu_read_1(sc, 0xfe5c) | 0x80);
3148 rsu_write_1(sc, 0x00ab,
3149 rsu_read_1(sc, 0x00ab) | 0xc0);
3150
3151 rsu_write_1(sc, R92S_SYS_CLKR,
3152 rsu_read_1(sc, R92S_SYS_CLKR) & ~R92S_SYS_CPU_CLKSEL);
3153 }
3154
3155 /*
3156 * Power on sequence for B-cut and C-cut adapters.
3157 */
3158 static void
3159 rsu_power_on_bcut(struct rsu_softc *sc)
3160 {
3161 uint32_t reg;
3162 int ntries;
3163
3164 /* Prevent eFuse leakage. */
3165 rsu_write_1(sc, 0x37, 0xb0);
3166 rsu_ms_delay(sc, 10);
3167 rsu_write_1(sc, 0x37, 0x30);
3168
3169 /* Switch the control path to hardware. */
3170 reg = rsu_read_2(sc, R92S_SYS_CLKR);
3171 if (reg & R92S_FWHW_SEL) {
3172 rsu_write_2(sc, R92S_SYS_CLKR,
3173 reg & ~(R92S_SWHW_SEL | R92S_FWHW_SEL));
3174 }
3175 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3176 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) & ~0x8c);
3177 rsu_ms_delay(sc, 1);
3178
3179 rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x53);
3180 rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x57);
3181
3182 reg = rsu_read_1(sc, R92S_AFE_MISC);
3183 rsu_write_1(sc, R92S_AFE_MISC, reg | R92S_AFE_MISC_BGEN);
3184 rsu_write_1(sc, R92S_AFE_MISC, reg | R92S_AFE_MISC_BGEN |
3185 R92S_AFE_MISC_MBEN | R92S_AFE_MISC_I32_EN);
3186
3187 /* Enable PLL. */
3188 rsu_write_1(sc, R92S_LDOA15_CTRL,
3189 rsu_read_1(sc, R92S_LDOA15_CTRL) | R92S_LDA15_EN);
3190
3191 rsu_write_1(sc, R92S_LDOV12D_CTRL,
3192 rsu_read_1(sc, R92S_LDOV12D_CTRL) | R92S_LDV12_EN);
3193
3194 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3195 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) | 0x08);
3196
3197 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3198 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x20);
3199
3200 /* Support 64KB IMEM. */
3201 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3202 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) & ~0x97);
3203
3204 /* Enable AFE clock. */
3205 rsu_write_1(sc, R92S_AFE_XTAL_CTRL + 1,
3206 rsu_read_1(sc, R92S_AFE_XTAL_CTRL + 1) & ~0x04);
3207 /* Enable AFE PLL macro block. */
3208 reg = rsu_read_1(sc, R92S_AFE_PLL_CTRL);
3209 rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x11);
3210 rsu_ms_delay(sc, 1);
3211 rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x51);
3212 rsu_ms_delay(sc, 1);
3213 rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x11);
3214 rsu_ms_delay(sc, 1);
3215
3216 /* Attach AFE PLL to MACTOP/BB. */
3217 rsu_write_1(sc, R92S_SYS_ISO_CTRL,
3218 rsu_read_1(sc, R92S_SYS_ISO_CTRL) & ~0x11);
3219
3220 /* Switch to 40MHz clock. */
3221 rsu_write_1(sc, R92S_SYS_CLKR, 0x00);
3222 /* Disable CPU clock and 80MHz SSC. */
3223 rsu_write_1(sc, R92S_SYS_CLKR,
3224 rsu_read_1(sc, R92S_SYS_CLKR) | 0xa0);
3225 /* Enable MAC clock. */
3226 rsu_write_2(sc, R92S_SYS_CLKR,
3227 rsu_read_2(sc, R92S_SYS_CLKR) |
3228 R92S_MAC_CLK_EN | R92S_SYS_CLK_EN);
3229
3230 rsu_write_1(sc, R92S_PMC_FSM, 0x02);
3231
3232 /* Enable digital core and IOREG R/W. */
3233 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3234 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x08);
3235
3236 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3237 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x80);
3238
3239 /* Switch the control path to firmware. */
3240 reg = rsu_read_2(sc, R92S_SYS_CLKR);
3241 reg = (reg & ~R92S_SWHW_SEL) | R92S_FWHW_SEL;
3242 rsu_write_2(sc, R92S_SYS_CLKR, reg);
3243
3244 rsu_write_2(sc, R92S_CR, 0x37fc);
3245
3246 /* Fix USB RX FIFO issue. */
3247 rsu_write_1(sc, 0xfe5c,
3248 rsu_read_1(sc, 0xfe5c) | 0x80);
3249
3250 rsu_write_1(sc, R92S_SYS_CLKR,
3251 rsu_read_1(sc, R92S_SYS_CLKR) & ~R92S_SYS_CPU_CLKSEL);
3252
3253 rsu_write_1(sc, 0xfe1c, 0x80);
3254
3255 /* Make sure TxDMA is ready to download firmware. */
3256 for (ntries = 0; ntries < 20; ntries++) {
3257 reg = rsu_read_1(sc, R92S_TCR);
3258 if ((reg & (R92S_TCR_IMEM_CHK_RPT | R92S_TCR_EMEM_CHK_RPT)) ==
3259 (R92S_TCR_IMEM_CHK_RPT | R92S_TCR_EMEM_CHK_RPT))
3260 break;
3261 rsu_ms_delay(sc, 1);
3262 }
3263 if (ntries == 20) {
3264 RSU_DPRINTF(sc, RSU_DEBUG_RESET | RSU_DEBUG_TX,
3265 "%s: TxDMA is not ready\n",
3266 __func__);
3267 /* Reset TxDMA. */
3268 reg = rsu_read_1(sc, R92S_CR);
3269 rsu_write_1(sc, R92S_CR, reg & ~R92S_CR_TXDMA_EN);
3270 rsu_ms_delay(sc, 1);
3271 rsu_write_1(sc, R92S_CR, reg | R92S_CR_TXDMA_EN);
3272 }
3273 }
3274
3275 static void
3276 rsu_power_off(struct rsu_softc *sc)
3277 {
3278 /* Turn RF off. */
3279 rsu_write_1(sc, R92S_RF_CTRL, 0x00);
3280 rsu_ms_delay(sc, 5);
3281
3282 /* Turn MAC off. */
3283 /* Switch control path. */
3284 rsu_write_1(sc, R92S_SYS_CLKR + 1, 0x38);
3285 /* Reset MACTOP. */
3286 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1, 0x70);
3287 rsu_write_1(sc, R92S_PMC_FSM, 0x06);
3288 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 0, 0xf9);
3289 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1, 0xe8);
3290
3291 /* Disable AFE PLL. */
3292 rsu_write_1(sc, R92S_AFE_PLL_CTRL, 0x00);
3293 /* Disable A15V. */
3294 rsu_write_1(sc, R92S_LDOA15_CTRL, 0x54);
3295 /* Disable eFuse 1.2V. */
3296 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1, 0x50);
3297 rsu_write_1(sc, R92S_LDOV12D_CTRL, 0x24);
3298 /* Enable AFE macro block's bandgap and Mbias. */
3299 rsu_write_1(sc, R92S_AFE_MISC, 0x30);
3300 /* Disable 1.6V LDO. */
3301 rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x56);
3302 rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x43);
3303
3304 /* Firmware - tell it to switch things off */
3305 (void) rsu_set_fw_power_state(sc, RSU_PWR_OFF);
3306 }
3307
3308 static int
3309 rsu_fw_loadsection(struct rsu_softc *sc, const uint8_t *buf, int len)
3310 {
3311 const uint8_t which = rsu_wme_ac_xfer_map[WME_AC_VO];
3312 struct rsu_data *data;
3313 struct r92s_tx_desc *txd;
3314 int mlen;
3315
3316 while (len > 0) {
3317 data = rsu_getbuf(sc);
3318 if (data == NULL)
3319 return (ENOMEM);
3320 txd = (struct r92s_tx_desc *)data->buf;
3321 memset(txd, 0, sizeof(*txd));
3322 if (len <= RSU_TXBUFSZ - sizeof(*txd)) {
3323 /* Last chunk. */
3324 txd->txdw0 |= htole32(R92S_TXDW0_LINIP);
3325 mlen = len;
3326 } else
3327 mlen = RSU_TXBUFSZ - sizeof(*txd);
3328 txd->txdw0 |= htole32(SM(R92S_TXDW0_PKTLEN, mlen));
3329 memcpy(&txd[1], buf, mlen);
3330 data->buflen = sizeof(*txd) + mlen;
3331 RSU_DPRINTF(sc, RSU_DEBUG_TX | RSU_DEBUG_FW | RSU_DEBUG_RESET,
3332 "%s: starting transfer %p\n",
3333 __func__, data);
3334 STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
3335 buf += mlen;
3336 len -= mlen;
3337 }
3338 usbd_transfer_start(sc->sc_xfer[which]);
3339 return (0);
3340 }
3341
3342 CTASSERT(sizeof(size_t) >= sizeof(uint32_t));
3343
3344 static int
3345 rsu_load_firmware(struct rsu_softc *sc)
3346 {
3347 const struct r92s_fw_hdr *hdr;
3348 struct r92s_fw_priv dmem;
3349 struct ieee80211com *ic = &sc->sc_ic;
3350 const uint8_t *imem, *emem;
3351 uint32_t imemsz, ememsz;
3352 const struct firmware *fw;
3353 size_t size;
3354 uint32_t reg;
3355 int ntries, error;
3356
3357 if (rsu_read_1(sc, R92S_TCR) & R92S_TCR_FWRDY) {
3358 RSU_DPRINTF(sc, RSU_DEBUG_ANY,
3359 "%s: Firmware already loaded\n",
3360 __func__);
3361 return (0);
3362 }
3363
3364 RSU_UNLOCK(sc);
3365 /* Read firmware image from the filesystem. */
3366 if ((fw = firmware_get("rsu-rtl8712fw")) == NULL) {
3367 device_printf(sc->sc_dev,
3368 "%s: failed load firmware of file rsu-rtl8712fw\n",
3369 __func__);
3370 RSU_LOCK(sc);
3371 return (ENXIO);
3372 }
3373 RSU_LOCK(sc);
3374 size = fw->datasize;
3375 if (size < sizeof(*hdr)) {
3376 device_printf(sc->sc_dev, "firmware too short\n");
3377 error = EINVAL;
3378 goto fail;
3379 }
3380 hdr = (const struct r92s_fw_hdr *)fw->data;
3381 if (hdr->signature != htole16(0x8712) &&
3382 hdr->signature != htole16(0x8192)) {
3383 device_printf(sc->sc_dev,
3384 "invalid firmware signature 0x%x\n",
3385 le16toh(hdr->signature));
3386 error = EINVAL;
3387 goto fail;
3388 }
3389 RSU_DPRINTF(sc, RSU_DEBUG_FW, "FW V%d %02x-%02x %02x:%02x\n",
3390 le16toh(hdr->version), hdr->month, hdr->day, hdr->hour,
3391 hdr->minute);
3392
3393 /* Make sure that driver and firmware are in sync. */
3394 if (hdr->privsz != htole32(sizeof(dmem))) {
3395 device_printf(sc->sc_dev, "unsupported firmware image\n");
3396 error = EINVAL;
3397 goto fail;
3398 }
3399 /* Get FW sections sizes. */
3400 imemsz = le32toh(hdr->imemsz);
3401 ememsz = le32toh(hdr->sramsz);
3402 /* Check that all FW sections fit in image. */
3403 if (imemsz > (size_t)(size - sizeof(*hdr)) ||
3404 ememsz > (size_t)(size - sizeof(*hdr) - imemsz)) {
3405 device_printf(sc->sc_dev, "firmware too short\n");
3406 error = EINVAL;
3407 goto fail;
3408 }
3409 imem = (const uint8_t *)&hdr[1];
3410 emem = imem + imemsz;
3411
3412 /* Load IMEM section. */
3413 error = rsu_fw_loadsection(sc, imem, imemsz);
3414 if (error != 0) {
3415 device_printf(sc->sc_dev,
3416 "could not load firmware section %s\n", "IMEM");
3417 goto fail;
3418 }
3419 /* Wait for load to complete. */
3420 for (ntries = 0; ntries != 50; ntries++) {
3421 rsu_ms_delay(sc, 10);
3422 reg = rsu_read_1(sc, R92S_TCR);
3423 if (reg & R92S_TCR_IMEM_CODE_DONE)
3424 break;
3425 }
3426 if (ntries == 50) {
3427 device_printf(sc->sc_dev, "timeout waiting for IMEM transfer\n");
3428 error = ETIMEDOUT;
3429 goto fail;
3430 }
3431 /* Load EMEM section. */
3432 error = rsu_fw_loadsection(sc, emem, ememsz);
3433 if (error != 0) {
3434 device_printf(sc->sc_dev,
3435 "could not load firmware section %s\n", "EMEM");
3436 goto fail;
3437 }
3438 /* Wait for load to complete. */
3439 for (ntries = 0; ntries != 50; ntries++) {
3440 rsu_ms_delay(sc, 10);
3441 reg = rsu_read_2(sc, R92S_TCR);
3442 if (reg & R92S_TCR_EMEM_CODE_DONE)
3443 break;
3444 }
3445 if (ntries == 50) {
3446 device_printf(sc->sc_dev, "timeout waiting for EMEM transfer\n");
3447 error = ETIMEDOUT;
3448 goto fail;
3449 }
3450 /* Enable CPU. */
3451 rsu_write_1(sc, R92S_SYS_CLKR,
3452 rsu_read_1(sc, R92S_SYS_CLKR) | R92S_SYS_CPU_CLKSEL);
3453 if (!(rsu_read_1(sc, R92S_SYS_CLKR) & R92S_SYS_CPU_CLKSEL)) {
3454 device_printf(sc->sc_dev, "could not enable system clock\n");
3455 error = EIO;
3456 goto fail;
3457 }
3458 rsu_write_2(sc, R92S_SYS_FUNC_EN,
3459 rsu_read_2(sc, R92S_SYS_FUNC_EN) | R92S_FEN_CPUEN);
3460 if (!(rsu_read_2(sc, R92S_SYS_FUNC_EN) & R92S_FEN_CPUEN)) {
3461 device_printf(sc->sc_dev,
3462 "could not enable microcontroller\n");
3463 error = EIO;
3464 goto fail;
3465 }
3466 /* Wait for CPU to initialize. */
3467 for (ntries = 0; ntries < 100; ntries++) {
3468 if (rsu_read_1(sc, R92S_TCR) & R92S_TCR_IMEM_RDY)
3469 break;
3470 rsu_ms_delay(sc, 1);
3471 }
3472 if (ntries == 100) {
3473 device_printf(sc->sc_dev,
3474 "timeout waiting for microcontroller\n");
3475 error = ETIMEDOUT;
3476 goto fail;
3477 }
3478
3479 /* Update DMEM section before loading. */
3480 memset(&dmem, 0, sizeof(dmem));
3481 dmem.hci_sel = R92S_HCI_SEL_USB | R92S_HCI_SEL_8172;
3482 dmem.nendpoints = sc->sc_nendpoints;
3483 dmem.chip_version = sc->cut;
3484 dmem.rf_config = sc->sc_rftype;
3485 dmem.vcs_type = R92S_VCS_TYPE_AUTO;
3486 dmem.vcs_mode = R92S_VCS_MODE_RTS_CTS;
3487 dmem.turbo_mode = 0;
3488 dmem.bw40_en = !! (ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40);
3489 dmem.amsdu2ampdu_en = !! (sc->sc_ht);
3490 dmem.ampdu_en = !! (sc->sc_ht);
3491 dmem.agg_offload = !! (sc->sc_ht);
3492 dmem.qos_en = 1;
3493 dmem.ps_offload = 1;
3494 dmem.lowpower_mode = 1; /* XXX TODO: configurable? */
3495 /* Load DMEM section. */
3496 error = rsu_fw_loadsection(sc, (uint8_t *)&dmem, sizeof(dmem));
3497 if (error != 0) {
3498 device_printf(sc->sc_dev,
3499 "could not load firmware section %s\n", "DMEM");
3500 goto fail;
3501 }
3502 /* Wait for load to complete. */
3503 for (ntries = 0; ntries < 100; ntries++) {
3504 if (rsu_read_1(sc, R92S_TCR) & R92S_TCR_DMEM_CODE_DONE)
3505 break;
3506 rsu_ms_delay(sc, 1);
3507 }
3508 if (ntries == 100) {
3509 device_printf(sc->sc_dev, "timeout waiting for %s transfer\n",
3510 "DMEM");
3511 error = ETIMEDOUT;
3512 goto fail;
3513 }
3514 /* Wait for firmware readiness. */
3515 for (ntries = 0; ntries < 60; ntries++) {
3516 if (!(rsu_read_1(sc, R92S_TCR) & R92S_TCR_FWRDY))
3517 break;
3518 rsu_ms_delay(sc, 1);
3519 }
3520 if (ntries == 60) {
3521 device_printf(sc->sc_dev,
3522 "timeout waiting for firmware readiness\n");
3523 error = ETIMEDOUT;
3524 goto fail;
3525 }
3526 fail:
3527 firmware_put(fw, FIRMWARE_UNLOAD);
3528 return (error);
3529 }
3530
3531 static int
3532 rsu_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
3533 const struct ieee80211_bpf_params *params)
3534 {
3535 struct ieee80211com *ic = ni->ni_ic;
3536 struct rsu_softc *sc = ic->ic_softc;
3537 struct rsu_data *bf;
3538
3539 /* prevent management frames from being sent if we're not ready */
3540 if (!sc->sc_running) {
3541 m_freem(m);
3542 return (ENETDOWN);
3543 }
3544 RSU_LOCK(sc);
3545 bf = rsu_getbuf(sc);
3546 if (bf == NULL) {
3547 m_freem(m);
3548 RSU_UNLOCK(sc);
3549 return (ENOBUFS);
3550 }
3551 if (rsu_tx_start(sc, ni, m, bf) != 0) {
3552 m_freem(m);
3553 rsu_freebuf(sc, bf);
3554 RSU_UNLOCK(sc);
3555 return (EIO);
3556 }
3557 RSU_UNLOCK(sc);
3558
3559 return (0);
3560 }
3561
3562 static void
3563 rsu_rxfilter_init(struct rsu_softc *sc)
3564 {
3565 uint32_t reg;
3566
3567 RSU_ASSERT_LOCKED(sc);
3568
3569 /* Setup multicast filter. */
3570 rsu_set_multi(sc);
3571
3572 /* Adjust Rx filter. */
3573 reg = rsu_read_4(sc, R92S_RCR);
3574 reg &= ~R92S_RCR_AICV;
3575 reg |= R92S_RCR_APP_PHYSTS;
3576 if (sc->sc_rx_checksum_enable)
3577 reg |= R92S_RCR_TCP_OFFLD_EN;
3578 rsu_write_4(sc, R92S_RCR, reg);
3579
3580 /* Update dynamic Rx filter parts. */
3581 rsu_rxfilter_refresh(sc);
3582 }
3583
3584 static void
3585 rsu_rxfilter_set(struct rsu_softc *sc, uint32_t clear, uint32_t set)
3586 {
3587 /* NB: firmware can touch this register too. */
3588 rsu_write_4(sc, R92S_RCR,
3589 (rsu_read_4(sc, R92S_RCR) & ~clear) | set);
3590 }
3591
3592 static void
3593 rsu_rxfilter_refresh(struct rsu_softc *sc)
3594 {
3595 struct ieee80211com *ic = &sc->sc_ic;
3596 uint32_t mask_all, mask_min;
3597
3598 RSU_ASSERT_LOCKED(sc);
3599
3600 /* NB: RCR_AMF / RXFLTMAP_MGT are used by firmware. */
3601 mask_all = R92S_RCR_ACF | R92S_RCR_AAP;
3602 mask_min = R92S_RCR_APM;
3603 if (sc->sc_vap_is_running)
3604 mask_min |= R92S_RCR_CBSSID;
3605 else
3606 mask_all |= R92S_RCR_ADF;
3607
3608 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
3609 uint16_t rxfltmap;
3610 if (sc->sc_vap_is_running)
3611 rxfltmap = 0;
3612 else
3613 rxfltmap = R92S_RXFLTMAP_MGT_DEF;
3614 rsu_write_2(sc, R92S_RXFLTMAP_MGT, rxfltmap);
3615 }
3616
3617 if (ic->ic_promisc == 0 && ic->ic_opmode != IEEE80211_M_MONITOR)
3618 rsu_rxfilter_set(sc, mask_all, mask_min);
3619 else
3620 rsu_rxfilter_set(sc, mask_min, mask_all);
3621 }
3622
3623 static int
3624 rsu_init(struct rsu_softc *sc)
3625 {
3626 struct ieee80211com *ic = &sc->sc_ic;
3627 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3628 uint8_t macaddr[IEEE80211_ADDR_LEN];
3629 int error;
3630 int i;
3631
3632 RSU_LOCK(sc);
3633
3634 if (sc->sc_running) {
3635 RSU_UNLOCK(sc);
3636 return (0);
3637 }
3638
3639 /* Ensure the mbuf queue is drained */
3640 rsu_drain_mbufq(sc);
3641
3642 /* Reset power management state. */
3643 rsu_write_1(sc, R92S_USB_HRPWM, 0);
3644
3645 /* Power on adapter. */
3646 if (sc->cut == 1)
3647 rsu_power_on_acut(sc);
3648 else
3649 rsu_power_on_bcut(sc);
3650
3651 /* Load firmware. */
3652 error = rsu_load_firmware(sc);
3653 if (error != 0)
3654 goto fail;
3655
3656 rsu_write_4(sc, R92S_CR,
3657 rsu_read_4(sc, R92S_CR) & ~0xff000000);
3658
3659 /* Use 128 bytes pages. */
3660 rsu_write_1(sc, 0x00b5,
3661 rsu_read_1(sc, 0x00b5) | 0x01);
3662 /* Enable USB Rx aggregation. */
3663 rsu_write_1(sc, 0x00bd,
3664 rsu_read_1(sc, 0x00bd) | 0x80);
3665 /* Set USB Rx aggregation threshold. */
3666 rsu_write_1(sc, 0x00d9, 0x01);
3667 /* Set USB Rx aggregation timeout (1.7ms/4). */
3668 rsu_write_1(sc, 0xfe5b, 0x04);
3669 /* Fix USB Rx FIFO issue. */
3670 rsu_write_1(sc, 0xfe5c,
3671 rsu_read_1(sc, 0xfe5c) | 0x80);
3672
3673 /* Set MAC address. */
3674 IEEE80211_ADDR_COPY(macaddr, vap ? vap->iv_myaddr : ic->ic_macaddr);
3675 rsu_write_region_1(sc, R92S_MACID, macaddr, IEEE80211_ADDR_LEN);
3676
3677 /* It really takes 1.5 seconds for the firmware to boot: */
3678 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(2000));
3679
3680 RSU_DPRINTF(sc, RSU_DEBUG_RESET, "%s: setting MAC address to %s\n",
3681 __func__,
3682 ether_sprintf(macaddr));
3683 error = rsu_fw_cmd(sc, R92S_CMD_SET_MAC_ADDRESS, macaddr,
3684 IEEE80211_ADDR_LEN);
3685 if (error != 0) {
3686 device_printf(sc->sc_dev, "could not set MAC address\n");
3687 goto fail;
3688 }
3689
3690 /* Initialize Rx filter. */
3691 rsu_rxfilter_init(sc);
3692
3693 /* Set PS mode fully active */
3694 error = rsu_set_fw_power_state(sc, RSU_PWR_ACTIVE);
3695 if (error != 0) {
3696 device_printf(sc->sc_dev, "could not set PS mode\n");
3697 goto fail;
3698 }
3699
3700 /* Install static keys (if any). */
3701 error = rsu_reinit_static_keys(sc);
3702 if (error != 0)
3703 goto fail;
3704
3705 sc->sc_extra_scan = 0;
3706 usbd_transfer_start(sc->sc_xfer[RSU_BULK_RX]);
3707
3708 /* We're ready to go. */
3709 sc->sc_running = 1;
3710 RSU_UNLOCK(sc);
3711
3712 return (0);
3713 fail:
3714 /* Need to stop all failed transfers, if any */
3715 for (i = 0; i != RSU_N_TRANSFER; i++)
3716 usbd_transfer_stop(sc->sc_xfer[i]);
3717 RSU_UNLOCK(sc);
3718
3719 return (error);
3720 }
3721
3722 static void
3723 rsu_stop(struct rsu_softc *sc)
3724 {
3725 int i;
3726
3727 RSU_LOCK(sc);
3728 if (!sc->sc_running) {
3729 RSU_UNLOCK(sc);
3730 return;
3731 }
3732
3733 sc->sc_running = 0;
3734 sc->sc_vap_is_running = 0;
3735 sc->sc_calibrating = 0;
3736 taskqueue_cancel_timeout(taskqueue_thread, &sc->calib_task, NULL);
3737 taskqueue_cancel(taskqueue_thread, &sc->tx_task, NULL);
3738
3739 /* Power off adapter. */
3740 rsu_power_off(sc);
3741
3742 /*
3743 * CAM is not accessible after shutdown;
3744 * all entries are marked (by firmware?) as invalid.
3745 */
3746 memset(sc->free_keys_bmap, 0, sizeof(sc->free_keys_bmap));
3747 memset(sc->keys_bmap, 0, sizeof(sc->keys_bmap));
3748
3749 for (i = 0; i < RSU_N_TRANSFER; i++)
3750 usbd_transfer_stop(sc->sc_xfer[i]);
3751
3752 /* Ensure the mbuf queue is drained */
3753 rsu_drain_mbufq(sc);
3754 RSU_UNLOCK(sc);
3755 }
3756
3757 /*
3758 * Note: usb_pause_mtx() actually releases the mutex before calling pause(),
3759 * which breaks any kind of driver serialisation.
3760 */
3761 static void
3762 rsu_ms_delay(struct rsu_softc *sc, int ms)
3763 {
3764
3765 //usb_pause_mtx(&sc->sc_mtx, hz / 1000);
3766 DELAY(ms * 1000);
3767 }
Cache object: f4beb9e7dd2933dfefa07a96093e9607
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