1 /* $OpenBSD: if_rsu.c,v 1.17 2013/04/15 09:23:01 mglocker Exp $ */
2
3 /*-
4 * Copyright (c) 2010 Damien Bergamini <[email protected]>
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, 0, "USB rsu");
75 SYSCTL_INT(_hw_usb_rsu, OID_AUTO, debug, CTLFLAG_RWTUN, &rsu_debug, 0,
76 "Debug level");
77 #define RSU_DPRINTF(_sc, _flg, ...) \
78 do \
79 if (((_flg) == (RSU_DEBUG_ANY)) || (rsu_debug & (_flg))) \
80 device_printf((_sc)->sc_dev, __VA_ARGS__); \
81 while (0)
82 #else
83 #define RSU_DPRINTF(_sc, _flg, ...)
84 #endif
85
86 static int rsu_enable_11n = 1;
87 TUNABLE_INT("hw.usb.rsu.enable_11n", &rsu_enable_11n);
88
89 #define RSU_DEBUG_ANY 0xffffffff
90 #define RSU_DEBUG_TX 0x00000001
91 #define RSU_DEBUG_RX 0x00000002
92 #define RSU_DEBUG_RESET 0x00000004
93 #define RSU_DEBUG_CALIB 0x00000008
94 #define RSU_DEBUG_STATE 0x00000010
95 #define RSU_DEBUG_SCAN 0x00000020
96 #define RSU_DEBUG_FWCMD 0x00000040
97 #define RSU_DEBUG_TXDONE 0x00000080
98 #define RSU_DEBUG_FW 0x00000100
99 #define RSU_DEBUG_FWDBG 0x00000200
100 #define RSU_DEBUG_AMPDU 0x00000400
101 #define RSU_DEBUG_KEY 0x00000800
102 #define RSU_DEBUG_USB 0x00001000
103
104 static const STRUCT_USB_HOST_ID rsu_devs[] = {
105 #define RSU_HT_NOT_SUPPORTED 0
106 #define RSU_HT_SUPPORTED 1
107 #define RSU_DEV_HT(v,p) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, \
108 RSU_HT_SUPPORTED) }
109 #define RSU_DEV(v,p) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, \
110 RSU_HT_NOT_SUPPORTED) }
111 RSU_DEV(ASUS, RTL8192SU),
112 RSU_DEV(AZUREWAVE, RTL8192SU_4),
113 RSU_DEV(SITECOMEU, WLA1000),
114 RSU_DEV_HT(ACCTON, RTL8192SU),
115 RSU_DEV_HT(ASUS, USBN10),
116 RSU_DEV_HT(AZUREWAVE, RTL8192SU_1),
117 RSU_DEV_HT(AZUREWAVE, RTL8192SU_2),
118 RSU_DEV_HT(AZUREWAVE, RTL8192SU_3),
119 RSU_DEV_HT(AZUREWAVE, RTL8192SU_5),
120 RSU_DEV_HT(BELKIN, RTL8192SU_1),
121 RSU_DEV_HT(BELKIN, RTL8192SU_2),
122 RSU_DEV_HT(BELKIN, RTL8192SU_3),
123 RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_1),
124 RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_2),
125 RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_3),
126 RSU_DEV_HT(COREGA, RTL8192SU),
127 RSU_DEV_HT(DLINK2, DWA131A1),
128 RSU_DEV_HT(DLINK2, RTL8192SU_1),
129 RSU_DEV_HT(DLINK2, RTL8192SU_2),
130 RSU_DEV_HT(EDIMAX, RTL8192SU_1),
131 RSU_DEV_HT(EDIMAX, RTL8192SU_2),
132 RSU_DEV_HT(EDIMAX, EW7622UMN),
133 RSU_DEV_HT(GUILLEMOT, HWGUN54),
134 RSU_DEV_HT(GUILLEMOT, HWNUM300),
135 RSU_DEV_HT(HAWKING, RTL8192SU_1),
136 RSU_DEV_HT(HAWKING, RTL8192SU_2),
137 RSU_DEV_HT(PLANEX2, GWUSNANO),
138 RSU_DEV_HT(REALTEK, RTL8171),
139 RSU_DEV_HT(REALTEK, RTL8172),
140 RSU_DEV_HT(REALTEK, RTL8173),
141 RSU_DEV_HT(REALTEK, RTL8174),
142 RSU_DEV_HT(REALTEK, RTL8192SU),
143 RSU_DEV_HT(REALTEK, RTL8712),
144 RSU_DEV_HT(REALTEK, RTL8713),
145 RSU_DEV_HT(SENAO, RTL8192SU_1),
146 RSU_DEV_HT(SENAO, RTL8192SU_2),
147 RSU_DEV_HT(SITECOMEU, WL349V1),
148 RSU_DEV_HT(SITECOMEU, WL353),
149 RSU_DEV_HT(SWEEX2, LW154),
150 RSU_DEV_HT(TRENDNET, TEW646UBH),
151 #undef RSU_DEV_HT
152 #undef RSU_DEV
153 };
154
155 static device_probe_t rsu_match;
156 static device_attach_t rsu_attach;
157 static device_detach_t rsu_detach;
158 static usb_callback_t rsu_bulk_tx_callback_be_bk;
159 static usb_callback_t rsu_bulk_tx_callback_vi_vo;
160 static usb_callback_t rsu_bulk_tx_callback_h2c;
161 static usb_callback_t rsu_bulk_rx_callback;
162 static usb_error_t rsu_do_request(struct rsu_softc *,
163 struct usb_device_request *, void *);
164 static struct ieee80211vap *
165 rsu_vap_create(struct ieee80211com *, const char name[],
166 int, enum ieee80211_opmode, int, const uint8_t bssid[],
167 const uint8_t mac[]);
168 static void rsu_vap_delete(struct ieee80211vap *);
169 static void rsu_scan_start(struct ieee80211com *);
170 static void rsu_scan_end(struct ieee80211com *);
171 static void rsu_getradiocaps(struct ieee80211com *, int, int *,
172 struct ieee80211_channel[]);
173 static void rsu_set_channel(struct ieee80211com *);
174 static void rsu_scan_curchan(struct ieee80211_scan_state *, unsigned long);
175 static void rsu_scan_mindwell(struct ieee80211_scan_state *);
176 static void rsu_update_promisc(struct ieee80211com *);
177 static uint8_t rsu_get_multi_pos(const uint8_t[]);
178 static void rsu_set_multi(struct rsu_softc *);
179 static void rsu_update_mcast(struct ieee80211com *);
180 static int rsu_alloc_rx_list(struct rsu_softc *);
181 static void rsu_free_rx_list(struct rsu_softc *);
182 static int rsu_alloc_tx_list(struct rsu_softc *);
183 static void rsu_free_tx_list(struct rsu_softc *);
184 static void rsu_free_list(struct rsu_softc *, struct rsu_data [], int);
185 static struct rsu_data *_rsu_getbuf(struct rsu_softc *);
186 static struct rsu_data *rsu_getbuf(struct rsu_softc *);
187 static void rsu_freebuf(struct rsu_softc *, struct rsu_data *);
188 static int rsu_write_region_1(struct rsu_softc *, uint16_t, uint8_t *,
189 int);
190 static void rsu_write_1(struct rsu_softc *, uint16_t, uint8_t);
191 static void rsu_write_2(struct rsu_softc *, uint16_t, uint16_t);
192 static void rsu_write_4(struct rsu_softc *, uint16_t, uint32_t);
193 static int rsu_read_region_1(struct rsu_softc *, uint16_t, uint8_t *,
194 int);
195 static uint8_t rsu_read_1(struct rsu_softc *, uint16_t);
196 static uint16_t rsu_read_2(struct rsu_softc *, uint16_t);
197 static uint32_t rsu_read_4(struct rsu_softc *, uint16_t);
198 static int rsu_fw_iocmd(struct rsu_softc *, uint32_t);
199 static uint8_t rsu_efuse_read_1(struct rsu_softc *, uint16_t);
200 static int rsu_read_rom(struct rsu_softc *);
201 static int rsu_fw_cmd(struct rsu_softc *, uint8_t, void *, int);
202 static void rsu_calib_task(void *, int);
203 static void rsu_tx_task(void *, int);
204 static void rsu_set_led(struct rsu_softc *, int);
205 static int rsu_monitor_newstate(struct ieee80211vap *,
206 enum ieee80211_state, int);
207 static int rsu_newstate(struct ieee80211vap *, enum ieee80211_state, int);
208 static int rsu_key_alloc(struct ieee80211vap *, struct ieee80211_key *,
209 ieee80211_keyix *, ieee80211_keyix *);
210 static int rsu_process_key(struct ieee80211vap *,
211 const struct ieee80211_key *, int);
212 static int rsu_key_set(struct ieee80211vap *,
213 const struct ieee80211_key *);
214 static int rsu_key_delete(struct ieee80211vap *,
215 const struct ieee80211_key *);
216 static int rsu_cam_read(struct rsu_softc *, uint8_t, uint32_t *);
217 static void rsu_cam_write(struct rsu_softc *, uint8_t, uint32_t);
218 static int rsu_key_check(struct rsu_softc *, ieee80211_keyix, int);
219 static uint8_t rsu_crypto_mode(struct rsu_softc *, u_int, int);
220 static int rsu_set_key_group(struct rsu_softc *,
221 const struct ieee80211_key *);
222 static int rsu_set_key_pair(struct rsu_softc *,
223 const struct ieee80211_key *);
224 static int rsu_reinit_static_keys(struct rsu_softc *);
225 static int rsu_delete_key(struct rsu_softc *sc, ieee80211_keyix);
226 static void rsu_delete_key_pair_cb(void *, int);
227 static int rsu_site_survey(struct rsu_softc *,
228 struct ieee80211_scan_ssid *);
229 static int rsu_join_bss(struct rsu_softc *, struct ieee80211_node *);
230 static int rsu_disconnect(struct rsu_softc *);
231 static int rsu_hwrssi_to_rssi(struct rsu_softc *, int hw_rssi);
232 static void rsu_event_survey(struct rsu_softc *, uint8_t *, int);
233 static void rsu_event_join_bss(struct rsu_softc *, uint8_t *, int);
234 static void rsu_rx_event(struct rsu_softc *, uint8_t, uint8_t *, int);
235 static void rsu_rx_multi_event(struct rsu_softc *, uint8_t *, int);
236 static int8_t rsu_get_rssi(struct rsu_softc *, int, void *);
237 static struct mbuf * rsu_rx_copy_to_mbuf(struct rsu_softc *,
238 struct r92s_rx_stat *, int);
239 static uint32_t rsu_get_tsf_low(struct rsu_softc *);
240 static uint32_t rsu_get_tsf_high(struct rsu_softc *);
241 static struct ieee80211_node * rsu_rx_frame(struct rsu_softc *, struct mbuf *);
242 static struct mbuf * rsu_rx_multi_frame(struct rsu_softc *, uint8_t *, int);
243 static struct mbuf *
244 rsu_rxeof(struct usb_xfer *, struct rsu_data *);
245 static void rsu_txeof(struct usb_xfer *, struct rsu_data *);
246 static int rsu_raw_xmit(struct ieee80211_node *, struct mbuf *,
247 const struct ieee80211_bpf_params *);
248 static void rsu_rxfilter_init(struct rsu_softc *);
249 static void rsu_rxfilter_set(struct rsu_softc *, uint32_t, uint32_t);
250 static void rsu_rxfilter_refresh(struct rsu_softc *);
251 static int rsu_init(struct rsu_softc *);
252 static int rsu_tx_start(struct rsu_softc *, struct ieee80211_node *,
253 struct mbuf *, struct rsu_data *);
254 static int rsu_transmit(struct ieee80211com *, struct mbuf *);
255 static void rsu_start(struct rsu_softc *);
256 static void _rsu_start(struct rsu_softc *);
257 static int rsu_ioctl_net(struct ieee80211com *, u_long, void *);
258 static void rsu_parent(struct ieee80211com *);
259 static void rsu_stop(struct rsu_softc *);
260 static void rsu_ms_delay(struct rsu_softc *, int);
261
262 static device_method_t rsu_methods[] = {
263 DEVMETHOD(device_probe, rsu_match),
264 DEVMETHOD(device_attach, rsu_attach),
265 DEVMETHOD(device_detach, rsu_detach),
266
267 DEVMETHOD_END
268 };
269
270 static driver_t rsu_driver = {
271 .name = "rsu",
272 .methods = rsu_methods,
273 .size = sizeof(struct rsu_softc)
274 };
275
276 static devclass_t rsu_devclass;
277
278 DRIVER_MODULE(rsu, uhub, rsu_driver, rsu_devclass, NULL, 0);
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
rsu_match(device_t self)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
rsu_send_mgmt(struct ieee80211_node * ni,int type,int arg)362 rsu_send_mgmt(struct ieee80211_node *ni, int type, int arg)
363 {
364
365 return (ENOTSUP);
366 }
367
368 static void
rsu_update_chw(struct ieee80211com * ic)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
rsu_ampdu_enable(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap)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
rsu_wme_update(struct ieee80211com * ic)423 rsu_wme_update(struct ieee80211com *ic)
424 {
425
426 /* Firmware handles this; not our problem */
427 return (0);
428 }
429
430 static int
rsu_attach(device_t self)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
rsu_detach(device_t self)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
rsu_do_request(struct rsu_softc * sc,struct usb_device_request * req,void * data)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 *
rsu_vap_create(struct ieee80211com * ic,const char name[IFNAMSIZ],int unit,enum ieee80211_opmode opmode,int flags,const uint8_t bssid[IEEE80211_ADDR_LEN],const uint8_t mac[IEEE80211_ADDR_LEN])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
rsu_vap_delete(struct ieee80211vap * vap)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
rsu_scan_start(struct ieee80211com * ic)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
rsu_scan_end(struct ieee80211com * ic)762 rsu_scan_end(struct ieee80211com *ic)
763 {
764 /* Nothing to do here. */
765 }
766
767 static void
rsu_getradiocaps(struct ieee80211com * ic,int maxchans,int * nchans,struct ieee80211_channel chans[])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) != 0);
782 }
783
784 static void
rsu_set_channel(struct ieee80211com * ic)785 rsu_set_channel(struct ieee80211com *ic)
786 {
787 struct rsu_softc *sc = ic->ic_softc;
788
789 /*
790 * Only need to set the channel in Monitor mode. AP scanning and auth
791 * are already taken care of by their respective firmware commands.
792 */
793 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
794 struct r92s_set_channel cmd;
795 int error;
796
797 cmd.channel = IEEE80211_CHAN2IEEE(ic->ic_curchan);
798
799 RSU_LOCK(sc);
800 error = rsu_fw_cmd(sc, R92S_CMD_SET_CHANNEL, &cmd,
801 sizeof(cmd));
802 if (error != 0) {
803 device_printf(sc->sc_dev,
804 "%s: error %d setting channel\n", __func__,
805 error);
806 }
807 RSU_UNLOCK(sc);
808 }
809 }
810
811 static void
rsu_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)812 rsu_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
813 {
814 /* Scan is done in rsu_scan_start(). */
815 }
816
817 /**
818 * Called by the net80211 framework to indicate
819 * the minimum dwell time has been met, terminate the scan.
820 * We don't actually terminate the scan as the firmware will notify
821 * us when it's finished and we have no way to interrupt it.
822 */
823 static void
rsu_scan_mindwell(struct ieee80211_scan_state * ss)824 rsu_scan_mindwell(struct ieee80211_scan_state *ss)
825 {
826 /* NB: don't try to abort scan; wait for firmware to finish */
827 }
828
829 static void
rsu_update_promisc(struct ieee80211com * ic)830 rsu_update_promisc(struct ieee80211com *ic)
831 {
832 struct rsu_softc *sc = ic->ic_softc;
833
834 RSU_LOCK(sc);
835 if (sc->sc_running)
836 rsu_rxfilter_refresh(sc);
837 RSU_UNLOCK(sc);
838 }
839
840 /*
841 * The same as rtwn_get_multi_pos() / rtwn_set_multi().
842 */
843 static uint8_t
rsu_get_multi_pos(const uint8_t maddr[])844 rsu_get_multi_pos(const uint8_t maddr[])
845 {
846 uint64_t mask = 0x00004d101df481b4;
847 uint8_t pos = 0x27; /* initial value */
848 int i, j;
849
850 for (i = 0; i < IEEE80211_ADDR_LEN; i++)
851 for (j = (i == 0) ? 1 : 0; j < 8; j++)
852 if ((maddr[i] >> j) & 1)
853 pos ^= (mask >> (i * 8 + j - 1));
854
855 pos &= 0x3f;
856
857 return (pos);
858 }
859
860 static void
rsu_set_multi(struct rsu_softc * sc)861 rsu_set_multi(struct rsu_softc *sc)
862 {
863 struct ieee80211com *ic = &sc->sc_ic;
864 uint32_t mfilt[2];
865
866 RSU_ASSERT_LOCKED(sc);
867
868 /* general structure was copied from ath(4). */
869 if (ic->ic_allmulti == 0) {
870 struct ieee80211vap *vap;
871 struct ifnet *ifp;
872 struct ifmultiaddr *ifma;
873
874 /*
875 * Merge multicast addresses to form the hardware filter.
876 */
877 mfilt[0] = mfilt[1] = 0;
878 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
879 ifp = vap->iv_ifp;
880 if_maddr_rlock(ifp);
881 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
882 caddr_t dl;
883 uint8_t pos;
884
885 dl = LLADDR((struct sockaddr_dl *)
886 ifma->ifma_addr);
887 pos = rsu_get_multi_pos(dl);
888
889 mfilt[pos / 32] |= (1 << (pos % 32));
890 }
891 if_maddr_runlock(ifp);
892 }
893 } else
894 mfilt[0] = mfilt[1] = ~0;
895
896 rsu_write_4(sc, R92S_MAR + 0, mfilt[0]);
897 rsu_write_4(sc, R92S_MAR + 4, mfilt[1]);
898
899 RSU_DPRINTF(sc, RSU_DEBUG_STATE, "%s: MC filter %08x:%08x\n",
900 __func__, mfilt[0], mfilt[1]);
901 }
902
903 static void
rsu_update_mcast(struct ieee80211com * ic)904 rsu_update_mcast(struct ieee80211com *ic)
905 {
906 struct rsu_softc *sc = ic->ic_softc;
907
908 RSU_LOCK(sc);
909 if (sc->sc_running)
910 rsu_set_multi(sc);
911 RSU_UNLOCK(sc);
912 }
913
914 static int
rsu_alloc_list(struct rsu_softc * sc,struct rsu_data data[],int ndata,int maxsz)915 rsu_alloc_list(struct rsu_softc *sc, struct rsu_data data[],
916 int ndata, int maxsz)
917 {
918 int i, error;
919
920 for (i = 0; i < ndata; i++) {
921 struct rsu_data *dp = &data[i];
922 dp->sc = sc;
923 dp->m = NULL;
924 dp->buf = malloc(maxsz, M_USBDEV, M_NOWAIT);
925 if (dp->buf == NULL) {
926 device_printf(sc->sc_dev,
927 "could not allocate buffer\n");
928 error = ENOMEM;
929 goto fail;
930 }
931 dp->ni = NULL;
932 }
933
934 return (0);
935 fail:
936 rsu_free_list(sc, data, ndata);
937 return (error);
938 }
939
940 static int
rsu_alloc_rx_list(struct rsu_softc * sc)941 rsu_alloc_rx_list(struct rsu_softc *sc)
942 {
943 int error, i;
944
945 error = rsu_alloc_list(sc, sc->sc_rx, RSU_RX_LIST_COUNT,
946 RSU_RXBUFSZ);
947 if (error != 0)
948 return (error);
949
950 STAILQ_INIT(&sc->sc_rx_active);
951 STAILQ_INIT(&sc->sc_rx_inactive);
952
953 for (i = 0; i < RSU_RX_LIST_COUNT; i++)
954 STAILQ_INSERT_HEAD(&sc->sc_rx_inactive, &sc->sc_rx[i], next);
955
956 return (0);
957 }
958
959 static int
rsu_alloc_tx_list(struct rsu_softc * sc)960 rsu_alloc_tx_list(struct rsu_softc *sc)
961 {
962 int error, i;
963
964 error = rsu_alloc_list(sc, sc->sc_tx, RSU_TX_LIST_COUNT,
965 RSU_TXBUFSZ);
966 if (error != 0)
967 return (error);
968
969 STAILQ_INIT(&sc->sc_tx_inactive);
970
971 for (i = 0; i != RSU_N_TRANSFER; i++) {
972 STAILQ_INIT(&sc->sc_tx_active[i]);
973 STAILQ_INIT(&sc->sc_tx_pending[i]);
974 }
975
976 for (i = 0; i < RSU_TX_LIST_COUNT; i++) {
977 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, &sc->sc_tx[i], next);
978 }
979
980 return (0);
981 }
982
983 static void
rsu_free_tx_list(struct rsu_softc * sc)984 rsu_free_tx_list(struct rsu_softc *sc)
985 {
986 int i;
987
988 /* prevent further allocations from TX list(s) */
989 STAILQ_INIT(&sc->sc_tx_inactive);
990
991 for (i = 0; i != RSU_N_TRANSFER; i++) {
992 STAILQ_INIT(&sc->sc_tx_active[i]);
993 STAILQ_INIT(&sc->sc_tx_pending[i]);
994 }
995
996 rsu_free_list(sc, sc->sc_tx, RSU_TX_LIST_COUNT);
997 }
998
999 static void
rsu_free_rx_list(struct rsu_softc * sc)1000 rsu_free_rx_list(struct rsu_softc *sc)
1001 {
1002 /* prevent further allocations from RX list(s) */
1003 STAILQ_INIT(&sc->sc_rx_inactive);
1004 STAILQ_INIT(&sc->sc_rx_active);
1005
1006 rsu_free_list(sc, sc->sc_rx, RSU_RX_LIST_COUNT);
1007 }
1008
1009 static void
rsu_free_list(struct rsu_softc * sc,struct rsu_data data[],int ndata)1010 rsu_free_list(struct rsu_softc *sc, struct rsu_data data[], int ndata)
1011 {
1012 int i;
1013
1014 for (i = 0; i < ndata; i++) {
1015 struct rsu_data *dp = &data[i];
1016
1017 if (dp->buf != NULL) {
1018 free(dp->buf, M_USBDEV);
1019 dp->buf = NULL;
1020 }
1021 if (dp->ni != NULL) {
1022 ieee80211_free_node(dp->ni);
1023 dp->ni = NULL;
1024 }
1025 }
1026 }
1027
1028 static struct rsu_data *
_rsu_getbuf(struct rsu_softc * sc)1029 _rsu_getbuf(struct rsu_softc *sc)
1030 {
1031 struct rsu_data *bf;
1032
1033 bf = STAILQ_FIRST(&sc->sc_tx_inactive);
1034 if (bf != NULL)
1035 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
1036 else
1037 bf = NULL;
1038 return (bf);
1039 }
1040
1041 static struct rsu_data *
rsu_getbuf(struct rsu_softc * sc)1042 rsu_getbuf(struct rsu_softc *sc)
1043 {
1044 struct rsu_data *bf;
1045
1046 RSU_ASSERT_LOCKED(sc);
1047
1048 bf = _rsu_getbuf(sc);
1049 if (bf == NULL) {
1050 RSU_DPRINTF(sc, RSU_DEBUG_TX, "%s: no buffers\n", __func__);
1051 }
1052 return (bf);
1053 }
1054
1055 static void
rsu_freebuf(struct rsu_softc * sc,struct rsu_data * bf)1056 rsu_freebuf(struct rsu_softc *sc, struct rsu_data *bf)
1057 {
1058
1059 RSU_ASSERT_LOCKED(sc);
1060 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, bf, next);
1061 }
1062
1063 static int
rsu_write_region_1(struct rsu_softc * sc,uint16_t addr,uint8_t * buf,int len)1064 rsu_write_region_1(struct rsu_softc *sc, uint16_t addr, uint8_t *buf,
1065 int len)
1066 {
1067 usb_device_request_t req;
1068
1069 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
1070 req.bRequest = R92S_REQ_REGS;
1071 USETW(req.wValue, addr);
1072 USETW(req.wIndex, 0);
1073 USETW(req.wLength, len);
1074
1075 return (rsu_do_request(sc, &req, buf));
1076 }
1077
1078 static void
rsu_write_1(struct rsu_softc * sc,uint16_t addr,uint8_t val)1079 rsu_write_1(struct rsu_softc *sc, uint16_t addr, uint8_t val)
1080 {
1081 rsu_write_region_1(sc, addr, &val, 1);
1082 }
1083
1084 static void
rsu_write_2(struct rsu_softc * sc,uint16_t addr,uint16_t val)1085 rsu_write_2(struct rsu_softc *sc, uint16_t addr, uint16_t val)
1086 {
1087 val = htole16(val);
1088 rsu_write_region_1(sc, addr, (uint8_t *)&val, 2);
1089 }
1090
1091 static void
rsu_write_4(struct rsu_softc * sc,uint16_t addr,uint32_t val)1092 rsu_write_4(struct rsu_softc *sc, uint16_t addr, uint32_t val)
1093 {
1094 val = htole32(val);
1095 rsu_write_region_1(sc, addr, (uint8_t *)&val, 4);
1096 }
1097
1098 static int
rsu_read_region_1(struct rsu_softc * sc,uint16_t addr,uint8_t * buf,int len)1099 rsu_read_region_1(struct rsu_softc *sc, uint16_t addr, uint8_t *buf,
1100 int len)
1101 {
1102 usb_device_request_t req;
1103
1104 req.bmRequestType = UT_READ_VENDOR_DEVICE;
1105 req.bRequest = R92S_REQ_REGS;
1106 USETW(req.wValue, addr);
1107 USETW(req.wIndex, 0);
1108 USETW(req.wLength, len);
1109
1110 return (rsu_do_request(sc, &req, buf));
1111 }
1112
1113 static uint8_t
rsu_read_1(struct rsu_softc * sc,uint16_t addr)1114 rsu_read_1(struct rsu_softc *sc, uint16_t addr)
1115 {
1116 uint8_t val;
1117
1118 if (rsu_read_region_1(sc, addr, &val, 1) != 0)
1119 return (0xff);
1120 return (val);
1121 }
1122
1123 static uint16_t
rsu_read_2(struct rsu_softc * sc,uint16_t addr)1124 rsu_read_2(struct rsu_softc *sc, uint16_t addr)
1125 {
1126 uint16_t val;
1127
1128 if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 2) != 0)
1129 return (0xffff);
1130 return (le16toh(val));
1131 }
1132
1133 static uint32_t
rsu_read_4(struct rsu_softc * sc,uint16_t addr)1134 rsu_read_4(struct rsu_softc *sc, uint16_t addr)
1135 {
1136 uint32_t val;
1137
1138 if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 4) != 0)
1139 return (0xffffffff);
1140 return (le32toh(val));
1141 }
1142
1143 static int
rsu_fw_iocmd(struct rsu_softc * sc,uint32_t iocmd)1144 rsu_fw_iocmd(struct rsu_softc *sc, uint32_t iocmd)
1145 {
1146 int ntries;
1147
1148 rsu_write_4(sc, R92S_IOCMD_CTRL, iocmd);
1149 rsu_ms_delay(sc, 1);
1150 for (ntries = 0; ntries < 50; ntries++) {
1151 if (rsu_read_4(sc, R92S_IOCMD_CTRL) == 0)
1152 return (0);
1153 rsu_ms_delay(sc, 1);
1154 }
1155 return (ETIMEDOUT);
1156 }
1157
1158 static uint8_t
rsu_efuse_read_1(struct rsu_softc * sc,uint16_t addr)1159 rsu_efuse_read_1(struct rsu_softc *sc, uint16_t addr)
1160 {
1161 uint32_t reg;
1162 int ntries;
1163
1164 reg = rsu_read_4(sc, R92S_EFUSE_CTRL);
1165 reg = RW(reg, R92S_EFUSE_CTRL_ADDR, addr);
1166 reg &= ~R92S_EFUSE_CTRL_VALID;
1167 rsu_write_4(sc, R92S_EFUSE_CTRL, reg);
1168 /* Wait for read operation to complete. */
1169 for (ntries = 0; ntries < 100; ntries++) {
1170 reg = rsu_read_4(sc, R92S_EFUSE_CTRL);
1171 if (reg & R92S_EFUSE_CTRL_VALID)
1172 return (MS(reg, R92S_EFUSE_CTRL_DATA));
1173 rsu_ms_delay(sc, 1);
1174 }
1175 device_printf(sc->sc_dev,
1176 "could not read efuse byte at address 0x%x\n", addr);
1177 return (0xff);
1178 }
1179
1180 static int
rsu_read_rom(struct rsu_softc * sc)1181 rsu_read_rom(struct rsu_softc *sc)
1182 {
1183 uint8_t *rom = sc->rom;
1184 uint16_t addr = 0;
1185 uint32_t reg;
1186 uint8_t off, msk;
1187 int i;
1188
1189 /* Make sure that ROM type is eFuse and that autoload succeeded. */
1190 reg = rsu_read_1(sc, R92S_EE_9346CR);
1191 if ((reg & (R92S_9356SEL | R92S_EEPROM_EN)) != R92S_EEPROM_EN)
1192 return (EIO);
1193
1194 /* Turn on 2.5V to prevent eFuse leakage. */
1195 reg = rsu_read_1(sc, R92S_EFUSE_TEST + 3);
1196 rsu_write_1(sc, R92S_EFUSE_TEST + 3, reg | 0x80);
1197 rsu_ms_delay(sc, 1);
1198 rsu_write_1(sc, R92S_EFUSE_TEST + 3, reg & ~0x80);
1199
1200 /* Read full ROM image. */
1201 memset(&sc->rom, 0xff, sizeof(sc->rom));
1202 while (addr < 512) {
1203 reg = rsu_efuse_read_1(sc, addr);
1204 if (reg == 0xff)
1205 break;
1206 addr++;
1207 off = reg >> 4;
1208 msk = reg & 0xf;
1209 for (i = 0; i < 4; i++) {
1210 if (msk & (1 << i))
1211 continue;
1212 rom[off * 8 + i * 2 + 0] =
1213 rsu_efuse_read_1(sc, addr);
1214 addr++;
1215 rom[off * 8 + i * 2 + 1] =
1216 rsu_efuse_read_1(sc, addr);
1217 addr++;
1218 }
1219 }
1220 #ifdef USB_DEBUG
1221 if (rsu_debug & RSU_DEBUG_RESET) {
1222 /* Dump ROM content. */
1223 printf("\n");
1224 for (i = 0; i < sizeof(sc->rom); i++)
1225 printf("%02x:", rom[i]);
1226 printf("\n");
1227 }
1228 #endif
1229 return (0);
1230 }
1231
1232 static int
rsu_fw_cmd(struct rsu_softc * sc,uint8_t code,void * buf,int len)1233 rsu_fw_cmd(struct rsu_softc *sc, uint8_t code, void *buf, int len)
1234 {
1235 const uint8_t which = RSU_H2C_ENDPOINT;
1236 struct rsu_data *data;
1237 struct r92s_tx_desc *txd;
1238 struct r92s_fw_cmd_hdr *cmd;
1239 int cmdsz;
1240 int xferlen;
1241
1242 RSU_ASSERT_LOCKED(sc);
1243
1244 data = rsu_getbuf(sc);
1245 if (data == NULL)
1246 return (ENOMEM);
1247
1248 /* Blank the entire payload, just to be safe */
1249 memset(data->buf, '\0', RSU_TXBUFSZ);
1250
1251 /* Round-up command length to a multiple of 8 bytes. */
1252 /* XXX TODO: is this required? */
1253 cmdsz = (len + 7) & ~7;
1254
1255 xferlen = sizeof(*txd) + sizeof(*cmd) + cmdsz;
1256 KASSERT(xferlen <= RSU_TXBUFSZ, ("%s: invalid length", __func__));
1257 memset(data->buf, 0, xferlen);
1258
1259 /* Setup Tx descriptor. */
1260 txd = (struct r92s_tx_desc *)data->buf;
1261 txd->txdw0 = htole32(
1262 SM(R92S_TXDW0_OFFSET, sizeof(*txd)) |
1263 SM(R92S_TXDW0_PKTLEN, sizeof(*cmd) + cmdsz) |
1264 R92S_TXDW0_OWN | R92S_TXDW0_FSG | R92S_TXDW0_LSG);
1265 txd->txdw1 = htole32(SM(R92S_TXDW1_QSEL, R92S_TXDW1_QSEL_H2C));
1266
1267 /* Setup command header. */
1268 cmd = (struct r92s_fw_cmd_hdr *)&txd[1];
1269 cmd->len = htole16(cmdsz);
1270 cmd->code = code;
1271 cmd->seq = sc->cmd_seq;
1272 sc->cmd_seq = (sc->cmd_seq + 1) & 0x7f;
1273
1274 /* Copy command payload. */
1275 memcpy(&cmd[1], buf, len);
1276
1277 RSU_DPRINTF(sc, RSU_DEBUG_TX | RSU_DEBUG_FWCMD,
1278 "%s: Tx cmd code=0x%x len=0x%x\n",
1279 __func__, code, cmdsz);
1280 data->buflen = xferlen;
1281 STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
1282 usbd_transfer_start(sc->sc_xfer[which]);
1283
1284 return (0);
1285 }
1286
1287 /* ARGSUSED */
1288 static void
rsu_calib_task(void * arg,int pending __unused)1289 rsu_calib_task(void *arg, int pending __unused)
1290 {
1291 struct rsu_softc *sc = arg;
1292 #ifdef notyet
1293 uint32_t reg;
1294 #endif
1295
1296 RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "%s: running calibration task\n",
1297 __func__);
1298
1299 RSU_LOCK(sc);
1300 #ifdef notyet
1301 /* Read WPS PBC status. */
1302 rsu_write_1(sc, R92S_MAC_PINMUX_CTRL,
1303 R92S_GPIOMUX_EN | SM(R92S_GPIOSEL_GPIO, R92S_GPIOSEL_GPIO_JTAG));
1304 rsu_write_1(sc, R92S_GPIO_IO_SEL,
1305 rsu_read_1(sc, R92S_GPIO_IO_SEL) & ~R92S_GPIO_WPS);
1306 reg = rsu_read_1(sc, R92S_GPIO_CTRL);
1307 if (reg != 0xff && (reg & R92S_GPIO_WPS))
1308 RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "WPS PBC is pushed\n");
1309 #endif
1310 /* Read current signal level. */
1311 if (rsu_fw_iocmd(sc, 0xf4000001) == 0) {
1312 sc->sc_currssi = rsu_read_4(sc, R92S_IOCMD_DATA);
1313 RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "%s: RSSI=%d (%d)\n",
1314 __func__, sc->sc_currssi,
1315 rsu_hwrssi_to_rssi(sc, sc->sc_currssi));
1316 }
1317 if (sc->sc_calibrating)
1318 taskqueue_enqueue_timeout(taskqueue_thread, &sc->calib_task, hz);
1319 RSU_UNLOCK(sc);
1320 }
1321
1322 static void
rsu_tx_task(void * arg,int pending __unused)1323 rsu_tx_task(void *arg, int pending __unused)
1324 {
1325 struct rsu_softc *sc = arg;
1326
1327 RSU_LOCK(sc);
1328 _rsu_start(sc);
1329 RSU_UNLOCK(sc);
1330 }
1331
1332 #define RSU_PWR_UNKNOWN 0x0
1333 #define RSU_PWR_ACTIVE 0x1
1334 #define RSU_PWR_OFF 0x2
1335 #define RSU_PWR_SLEEP 0x3
1336
1337 /*
1338 * Set the current power state.
1339 *
1340 * The rtlwifi code doesn't do this so aggressively; it
1341 * waits for an idle period after association with
1342 * no traffic before doing this.
1343 *
1344 * For now - it's on in all states except RUN, and
1345 * in RUN it'll transition to allow sleep.
1346 */
1347
1348 struct r92s_pwr_cmd {
1349 uint8_t mode;
1350 uint8_t smart_ps;
1351 uint8_t bcn_pass_time;
1352 };
1353
1354 static int
rsu_set_fw_power_state(struct rsu_softc * sc,int state)1355 rsu_set_fw_power_state(struct rsu_softc *sc, int state)
1356 {
1357 struct r92s_set_pwr_mode cmd;
1358 //struct r92s_pwr_cmd cmd;
1359 int error;
1360
1361 RSU_ASSERT_LOCKED(sc);
1362
1363 /* only change state if required */
1364 if (sc->sc_curpwrstate == state)
1365 return (0);
1366
1367 memset(&cmd, 0, sizeof(cmd));
1368
1369 switch (state) {
1370 case RSU_PWR_ACTIVE:
1371 /* Force the hardware awake */
1372 rsu_write_1(sc, R92S_USB_HRPWM,
1373 R92S_USB_HRPWM_PS_ST_ACTIVE | R92S_USB_HRPWM_PS_ALL_ON);
1374 cmd.mode = R92S_PS_MODE_ACTIVE;
1375 break;
1376 case RSU_PWR_SLEEP:
1377 cmd.mode = R92S_PS_MODE_DTIM; /* XXX configurable? */
1378 cmd.smart_ps = 1; /* XXX 2 if doing p2p */
1379 cmd.bcn_pass_time = 5; /* in 100mS usb.c, linux/rtlwifi */
1380 break;
1381 case RSU_PWR_OFF:
1382 cmd.mode = R92S_PS_MODE_RADIOOFF;
1383 break;
1384 default:
1385 device_printf(sc->sc_dev, "%s: unknown ps mode (%d)\n",
1386 __func__,
1387 state);
1388 return (ENXIO);
1389 }
1390
1391 RSU_DPRINTF(sc, RSU_DEBUG_RESET,
1392 "%s: setting ps mode to %d (mode %d)\n",
1393 __func__, state, cmd.mode);
1394 error = rsu_fw_cmd(sc, R92S_CMD_SET_PWR_MODE, &cmd, sizeof(cmd));
1395 if (error == 0)
1396 sc->sc_curpwrstate = state;
1397
1398 return (error);
1399 }
1400
1401 static void
rsu_set_led(struct rsu_softc * sc,int on)1402 rsu_set_led(struct rsu_softc *sc, int on)
1403 {
1404 rsu_write_1(sc, R92S_LEDCFG,
1405 (rsu_read_1(sc, R92S_LEDCFG) & 0xf0) | (!on << 3));
1406 }
1407
1408 static int
rsu_monitor_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1409 rsu_monitor_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate,
1410 int arg)
1411 {
1412 struct ieee80211com *ic = vap->iv_ic;
1413 struct rsu_softc *sc = ic->ic_softc;
1414 struct rsu_vap *uvp = RSU_VAP(vap);
1415
1416 if (vap->iv_state != nstate) {
1417 IEEE80211_UNLOCK(ic);
1418 RSU_LOCK(sc);
1419
1420 switch (nstate) {
1421 case IEEE80211_S_INIT:
1422 sc->sc_vap_is_running = 0;
1423 rsu_set_led(sc, 0);
1424 break;
1425 case IEEE80211_S_RUN:
1426 sc->sc_vap_is_running = 1;
1427 rsu_set_led(sc, 1);
1428 break;
1429 default:
1430 /* NOTREACHED */
1431 break;
1432 }
1433 rsu_rxfilter_refresh(sc);
1434
1435 RSU_UNLOCK(sc);
1436 IEEE80211_LOCK(ic);
1437 }
1438
1439 return (uvp->newstate(vap, nstate, arg));
1440 }
1441
1442 static int
rsu_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1443 rsu_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1444 {
1445 struct rsu_vap *uvp = RSU_VAP(vap);
1446 struct ieee80211com *ic = vap->iv_ic;
1447 struct rsu_softc *sc = ic->ic_softc;
1448 struct ieee80211_node *ni;
1449 struct ieee80211_rateset *rs;
1450 enum ieee80211_state ostate;
1451 int error, startcal = 0;
1452
1453 ostate = vap->iv_state;
1454 RSU_DPRINTF(sc, RSU_DEBUG_STATE, "%s: %s -> %s\n",
1455 __func__,
1456 ieee80211_state_name[ostate],
1457 ieee80211_state_name[nstate]);
1458
1459 IEEE80211_UNLOCK(ic);
1460 if (ostate == IEEE80211_S_RUN) {
1461 RSU_LOCK(sc);
1462 /* Stop calibration. */
1463 sc->sc_calibrating = 0;
1464
1465 /* Pause Tx for AC queues. */
1466 rsu_write_1(sc, R92S_TXPAUSE, R92S_TXPAUSE_AC);
1467 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(10));
1468
1469 RSU_UNLOCK(sc);
1470 taskqueue_drain_timeout(taskqueue_thread, &sc->calib_task);
1471 taskqueue_drain(taskqueue_thread, &sc->tx_task);
1472 RSU_LOCK(sc);
1473 /* Disassociate from our current BSS. */
1474 rsu_disconnect(sc);
1475 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(10));
1476
1477 /* Refresh Rx filter (may be modified by firmware). */
1478 sc->sc_vap_is_running = 0;
1479 rsu_rxfilter_refresh(sc);
1480
1481 /* Reinstall static keys. */
1482 if (sc->sc_running)
1483 rsu_reinit_static_keys(sc);
1484 } else
1485 RSU_LOCK(sc);
1486 switch (nstate) {
1487 case IEEE80211_S_INIT:
1488 (void) rsu_set_fw_power_state(sc, RSU_PWR_ACTIVE);
1489 break;
1490 case IEEE80211_S_AUTH:
1491 ni = ieee80211_ref_node(vap->iv_bss);
1492 (void) rsu_set_fw_power_state(sc, RSU_PWR_ACTIVE);
1493 error = rsu_join_bss(sc, ni);
1494 ieee80211_free_node(ni);
1495 if (error != 0) {
1496 device_printf(sc->sc_dev,
1497 "could not send join command\n");
1498 }
1499 break;
1500 case IEEE80211_S_RUN:
1501 /* Flush all AC queues. */
1502 rsu_write_1(sc, R92S_TXPAUSE, 0);
1503
1504 ni = ieee80211_ref_node(vap->iv_bss);
1505 rs = &ni->ni_rates;
1506 /* Indicate highest supported rate. */
1507 ni->ni_txrate = rs->rs_rates[rs->rs_nrates - 1];
1508 (void) rsu_set_fw_power_state(sc, RSU_PWR_SLEEP);
1509 ieee80211_free_node(ni);
1510 startcal = 1;
1511 break;
1512 default:
1513 break;
1514 }
1515 if (startcal != 0) {
1516 sc->sc_calibrating = 1;
1517 /* Start periodic calibration. */
1518 taskqueue_enqueue_timeout(taskqueue_thread, &sc->calib_task,
1519 hz);
1520 }
1521 RSU_UNLOCK(sc);
1522 IEEE80211_LOCK(ic);
1523 return (uvp->newstate(vap, nstate, arg));
1524 }
1525
1526 static int
rsu_key_alloc(struct ieee80211vap * vap,struct ieee80211_key * k,ieee80211_keyix * keyix,ieee80211_keyix * rxkeyix)1527 rsu_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k,
1528 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix)
1529 {
1530 struct rsu_softc *sc = vap->iv_ic->ic_softc;
1531 int is_checked = 0;
1532
1533 if (&vap->iv_nw_keys[0] <= k &&
1534 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) {
1535 *keyix = ieee80211_crypto_get_key_wepidx(vap, k);
1536 } else {
1537 if (vap->iv_opmode != IEEE80211_M_STA) {
1538 *keyix = 0;
1539 /* TODO: obtain keyix from node id */
1540 is_checked = 1;
1541 k->wk_flags |= IEEE80211_KEY_SWCRYPT;
1542 } else
1543 *keyix = R92S_MACID_BSS;
1544 }
1545
1546 if (!is_checked) {
1547 RSU_LOCK(sc);
1548 if (isset(sc->keys_bmap, *keyix)) {
1549 device_printf(sc->sc_dev,
1550 "%s: key slot %d is already used!\n",
1551 __func__, *keyix);
1552 RSU_UNLOCK(sc);
1553 return (0);
1554 }
1555 setbit(sc->keys_bmap, *keyix);
1556 RSU_UNLOCK(sc);
1557 }
1558
1559 *rxkeyix = *keyix;
1560
1561 return (1);
1562 }
1563
1564 static int
rsu_process_key(struct ieee80211vap * vap,const struct ieee80211_key * k,int set)1565 rsu_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k,
1566 int set)
1567 {
1568 struct rsu_softc *sc = vap->iv_ic->ic_softc;
1569 int ret;
1570
1571 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) {
1572 /* Not for us. */
1573 return (1);
1574 }
1575
1576 /* Handle group keys. */
1577 if (&vap->iv_nw_keys[0] <= k &&
1578 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) {
1579 KASSERT(k->wk_keyix < nitems(sc->group_keys),
1580 ("keyix %u > %zu\n", k->wk_keyix, nitems(sc->group_keys)));
1581
1582 RSU_LOCK(sc);
1583 sc->group_keys[k->wk_keyix] = (set ? k : NULL);
1584 if (!sc->sc_running) {
1585 /* Static keys will be set during device startup. */
1586 RSU_UNLOCK(sc);
1587 return (1);
1588 }
1589
1590 if (set)
1591 ret = rsu_set_key_group(sc, k);
1592 else
1593 ret = rsu_delete_key(sc, k->wk_keyix);
1594 RSU_UNLOCK(sc);
1595
1596 return (!ret);
1597 }
1598
1599 if (set) {
1600 /* wait for pending key removal */
1601 taskqueue_drain(taskqueue_thread, &sc->del_key_task);
1602
1603 RSU_LOCK(sc);
1604 ret = rsu_set_key_pair(sc, k);
1605 RSU_UNLOCK(sc);
1606 } else {
1607 RSU_DELKEY_BMAP_LOCK(sc);
1608 setbit(sc->free_keys_bmap, k->wk_keyix);
1609 RSU_DELKEY_BMAP_UNLOCK(sc);
1610
1611 /* workaround ieee80211_node_delucastkey() locking */
1612 taskqueue_enqueue(taskqueue_thread, &sc->del_key_task);
1613 ret = 0; /* fake success */
1614 }
1615
1616 return (!ret);
1617 }
1618
1619 static int
rsu_key_set(struct ieee80211vap * vap,const struct ieee80211_key * k)1620 rsu_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
1621 {
1622 return (rsu_process_key(vap, k, 1));
1623 }
1624
1625 static int
rsu_key_delete(struct ieee80211vap * vap,const struct ieee80211_key * k)1626 rsu_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
1627 {
1628 return (rsu_process_key(vap, k, 0));
1629 }
1630
1631 static int
rsu_cam_read(struct rsu_softc * sc,uint8_t addr,uint32_t * val)1632 rsu_cam_read(struct rsu_softc *sc, uint8_t addr, uint32_t *val)
1633 {
1634 int ntries;
1635
1636 rsu_write_4(sc, R92S_CAMCMD,
1637 R92S_CAMCMD_POLLING | SM(R92S_CAMCMD_ADDR, addr));
1638 for (ntries = 0; ntries < 10; ntries++) {
1639 if (!(rsu_read_4(sc, R92S_CAMCMD) & R92S_CAMCMD_POLLING))
1640 break;
1641
1642 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(1));
1643 }
1644 if (ntries == 10) {
1645 device_printf(sc->sc_dev,
1646 "%s: cannot read CAM entry at address %02X\n",
1647 __func__, addr);
1648 return (ETIMEDOUT);
1649 }
1650
1651 *val = rsu_read_4(sc, R92S_CAMREAD);
1652
1653 return (0);
1654 }
1655
1656 static void
rsu_cam_write(struct rsu_softc * sc,uint8_t addr,uint32_t data)1657 rsu_cam_write(struct rsu_softc *sc, uint8_t addr, uint32_t data)
1658 {
1659
1660 rsu_write_4(sc, R92S_CAMWRITE, data);
1661 rsu_write_4(sc, R92S_CAMCMD,
1662 R92S_CAMCMD_POLLING | R92S_CAMCMD_WRITE |
1663 SM(R92S_CAMCMD_ADDR, addr));
1664 }
1665
1666 static int
rsu_key_check(struct rsu_softc * sc,ieee80211_keyix keyix,int is_valid)1667 rsu_key_check(struct rsu_softc *sc, ieee80211_keyix keyix, int is_valid)
1668 {
1669 uint32_t val;
1670 int error, ntries;
1671
1672 for (ntries = 0; ntries < 20; ntries++) {
1673 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(1));
1674
1675 error = rsu_cam_read(sc, R92S_CAM_CTL0(keyix), &val);
1676 if (error != 0) {
1677 device_printf(sc->sc_dev,
1678 "%s: cannot check key status!\n", __func__);
1679 return (error);
1680 }
1681 if (((val & R92S_CAM_VALID) == 0) ^ is_valid)
1682 break;
1683 }
1684 if (ntries == 20) {
1685 device_printf(sc->sc_dev,
1686 "%s: key %d is %s marked as valid, rejecting request\n",
1687 __func__, keyix, is_valid ? "not" : "still");
1688 return (EIO);
1689 }
1690
1691 return (0);
1692 }
1693
1694 /*
1695 * Map net80211 cipher to RTL8712 security mode.
1696 */
1697 static uint8_t
rsu_crypto_mode(struct rsu_softc * sc,u_int cipher,int keylen)1698 rsu_crypto_mode(struct rsu_softc *sc, u_int cipher, int keylen)
1699 {
1700 switch (cipher) {
1701 case IEEE80211_CIPHER_WEP:
1702 return keylen < 8 ? R92S_KEY_ALGO_WEP40 : R92S_KEY_ALGO_WEP104;
1703 case IEEE80211_CIPHER_TKIP:
1704 return R92S_KEY_ALGO_TKIP;
1705 case IEEE80211_CIPHER_AES_CCM:
1706 return R92S_KEY_ALGO_AES;
1707 default:
1708 device_printf(sc->sc_dev, "unknown cipher %d\n", cipher);
1709 return R92S_KEY_ALGO_INVALID;
1710 }
1711 }
1712
1713 static int
rsu_set_key_group(struct rsu_softc * sc,const struct ieee80211_key * k)1714 rsu_set_key_group(struct rsu_softc *sc, const struct ieee80211_key *k)
1715 {
1716 struct r92s_fw_cmd_set_key key;
1717 uint8_t algo;
1718 int error;
1719
1720 RSU_ASSERT_LOCKED(sc);
1721
1722 /* Map net80211 cipher to HW crypto algorithm. */
1723 algo = rsu_crypto_mode(sc, k->wk_cipher->ic_cipher, k->wk_keylen);
1724 if (algo == R92S_KEY_ALGO_INVALID)
1725 return (EINVAL);
1726
1727 memset(&key, 0, sizeof(key));
1728 key.algo = algo;
1729 key.cam_id = k->wk_keyix;
1730 key.grpkey = (k->wk_flags & IEEE80211_KEY_GROUP) != 0;
1731 memcpy(key.key, k->wk_key, MIN(k->wk_keylen, sizeof(key.key)));
1732
1733 RSU_DPRINTF(sc, RSU_DEBUG_KEY | RSU_DEBUG_FWCMD,
1734 "%s: keyix %u, group %u, algo %u/%u, flags %04X, len %u, "
1735 "macaddr %s\n", __func__, key.cam_id, key.grpkey,
1736 k->wk_cipher->ic_cipher, key.algo, k->wk_flags, k->wk_keylen,
1737 ether_sprintf(k->wk_macaddr));
1738
1739 error = rsu_fw_cmd(sc, R92S_CMD_SET_KEY, &key, sizeof(key));
1740 if (error != 0) {
1741 device_printf(sc->sc_dev,
1742 "%s: cannot send firmware command, error %d\n",
1743 __func__, error);
1744 return (error);
1745 }
1746
1747 return (rsu_key_check(sc, k->wk_keyix, 1));
1748 }
1749
1750 static int
rsu_set_key_pair(struct rsu_softc * sc,const struct ieee80211_key * k)1751 rsu_set_key_pair(struct rsu_softc *sc, const struct ieee80211_key *k)
1752 {
1753 struct r92s_fw_cmd_set_key_mac key;
1754 uint8_t algo;
1755 int error;
1756
1757 RSU_ASSERT_LOCKED(sc);
1758
1759 if (!sc->sc_running)
1760 return (ESHUTDOWN);
1761
1762 /* Map net80211 cipher to HW crypto algorithm. */
1763 algo = rsu_crypto_mode(sc, k->wk_cipher->ic_cipher, k->wk_keylen);
1764 if (algo == R92S_KEY_ALGO_INVALID)
1765 return (EINVAL);
1766
1767 memset(&key, 0, sizeof(key));
1768 key.algo = algo;
1769 memcpy(key.macaddr, k->wk_macaddr, sizeof(key.macaddr));
1770 memcpy(key.key, k->wk_key, MIN(k->wk_keylen, sizeof(key.key)));
1771
1772 RSU_DPRINTF(sc, RSU_DEBUG_KEY | RSU_DEBUG_FWCMD,
1773 "%s: keyix %u, algo %u/%u, flags %04X, len %u, macaddr %s\n",
1774 __func__, k->wk_keyix, k->wk_cipher->ic_cipher, key.algo,
1775 k->wk_flags, k->wk_keylen, ether_sprintf(key.macaddr));
1776
1777 error = rsu_fw_cmd(sc, R92S_CMD_SET_STA_KEY, &key, sizeof(key));
1778 if (error != 0) {
1779 device_printf(sc->sc_dev,
1780 "%s: cannot send firmware command, error %d\n",
1781 __func__, error);
1782 return (error);
1783 }
1784
1785 return (rsu_key_check(sc, k->wk_keyix, 1));
1786 }
1787
1788 static int
rsu_reinit_static_keys(struct rsu_softc * sc)1789 rsu_reinit_static_keys(struct rsu_softc *sc)
1790 {
1791 int i, error;
1792
1793 for (i = 0; i < nitems(sc->group_keys); i++) {
1794 if (sc->group_keys[i] != NULL) {
1795 error = rsu_set_key_group(sc, sc->group_keys[i]);
1796 if (error != 0) {
1797 device_printf(sc->sc_dev,
1798 "%s: failed to set static key %d, "
1799 "error %d\n", __func__, i, error);
1800 return (error);
1801 }
1802 }
1803 }
1804
1805 return (0);
1806 }
1807
1808 static int
rsu_delete_key(struct rsu_softc * sc,ieee80211_keyix keyix)1809 rsu_delete_key(struct rsu_softc *sc, ieee80211_keyix keyix)
1810 {
1811 struct r92s_fw_cmd_set_key key;
1812 uint32_t val;
1813 int error;
1814
1815 RSU_ASSERT_LOCKED(sc);
1816
1817 if (!sc->sc_running)
1818 return (0);
1819
1820 /* check if it was automatically removed by firmware */
1821 error = rsu_cam_read(sc, R92S_CAM_CTL0(keyix), &val);
1822 if (error == 0 && (val & R92S_CAM_VALID) == 0) {
1823 RSU_DPRINTF(sc, RSU_DEBUG_KEY,
1824 "%s: key %u does not exist\n", __func__, keyix);
1825 clrbit(sc->keys_bmap, keyix);
1826 return (0);
1827 }
1828
1829 memset(&key, 0, sizeof(key));
1830 key.cam_id = keyix;
1831
1832 RSU_DPRINTF(sc, RSU_DEBUG_KEY | RSU_DEBUG_FWCMD,
1833 "%s: removing key %u\n", __func__, key.cam_id);
1834
1835 error = rsu_fw_cmd(sc, R92S_CMD_SET_KEY, &key, sizeof(key));
1836 if (error != 0) {
1837 device_printf(sc->sc_dev,
1838 "%s: cannot send firmware command, error %d\n",
1839 __func__, error);
1840 goto finish;
1841 }
1842
1843 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(5));
1844
1845 /*
1846 * Clear 'valid' bit manually (cannot be done via firmware command).
1847 * Used for key check + when firmware command cannot be sent.
1848 */
1849 finish:
1850 rsu_cam_write(sc, R92S_CAM_CTL0(keyix), 0);
1851
1852 clrbit(sc->keys_bmap, keyix);
1853
1854 return (rsu_key_check(sc, keyix, 0));
1855 }
1856
1857 static void
rsu_delete_key_pair_cb(void * arg,int pending __unused)1858 rsu_delete_key_pair_cb(void *arg, int pending __unused)
1859 {
1860 struct rsu_softc *sc = arg;
1861 int i;
1862
1863 RSU_DELKEY_BMAP_LOCK(sc);
1864 for (i = IEEE80211_WEP_NKID; i < R92S_CAM_ENTRY_LIMIT; i++) {
1865 if (isset(sc->free_keys_bmap, i)) {
1866 RSU_DELKEY_BMAP_UNLOCK(sc);
1867
1868 RSU_LOCK(sc);
1869 RSU_DPRINTF(sc, RSU_DEBUG_KEY,
1870 "%s: calling rsu_delete_key() with keyix = %d\n",
1871 __func__, i);
1872 (void) rsu_delete_key(sc, i);
1873 RSU_UNLOCK(sc);
1874
1875 RSU_DELKEY_BMAP_LOCK(sc);
1876 clrbit(sc->free_keys_bmap, i);
1877
1878 /* bmap can be changed */
1879 i = IEEE80211_WEP_NKID - 1;
1880 continue;
1881 }
1882 }
1883 RSU_DELKEY_BMAP_UNLOCK(sc);
1884 }
1885
1886 static int
rsu_site_survey(struct rsu_softc * sc,struct ieee80211_scan_ssid * ssid)1887 rsu_site_survey(struct rsu_softc *sc, struct ieee80211_scan_ssid *ssid)
1888 {
1889 struct r92s_fw_cmd_sitesurvey cmd;
1890
1891 RSU_ASSERT_LOCKED(sc);
1892
1893 memset(&cmd, 0, sizeof(cmd));
1894 /* TODO: passive channels? */
1895 if (sc->sc_active_scan)
1896 cmd.active = htole32(1);
1897 cmd.limit = htole32(48);
1898
1899 if (ssid != NULL) {
1900 sc->sc_extra_scan = 1;
1901 cmd.ssidlen = htole32(ssid->len);
1902 memcpy(cmd.ssid, ssid->ssid, ssid->len);
1903 }
1904 #ifdef USB_DEBUG
1905 if (rsu_debug & (RSU_DEBUG_SCAN | RSU_DEBUG_FWCMD)) {
1906 device_printf(sc->sc_dev,
1907 "sending site survey command, active %d",
1908 le32toh(cmd.active));
1909 if (ssid != NULL) {
1910 printf(", ssid: ");
1911 ieee80211_print_essid(cmd.ssid, le32toh(cmd.ssidlen));
1912 }
1913 printf("\n");
1914 }
1915 #endif
1916 return (rsu_fw_cmd(sc, R92S_CMD_SITE_SURVEY, &cmd, sizeof(cmd)));
1917 }
1918
1919 static int
rsu_join_bss(struct rsu_softc * sc,struct ieee80211_node * ni)1920 rsu_join_bss(struct rsu_softc *sc, struct ieee80211_node *ni)
1921 {
1922 struct ieee80211com *ic = &sc->sc_ic;
1923 struct ieee80211vap *vap = ni->ni_vap;
1924 struct ndis_wlan_bssid_ex *bss;
1925 struct ndis_802_11_fixed_ies *fixed;
1926 struct r92s_fw_cmd_auth auth;
1927 uint8_t buf[sizeof(*bss) + 128] __aligned(4);
1928 uint8_t *frm;
1929 uint8_t opmode;
1930 int error;
1931
1932 RSU_ASSERT_LOCKED(sc);
1933
1934 /* Let the FW decide the opmode based on the capinfo field. */
1935 opmode = NDIS802_11AUTOUNKNOWN;
1936 RSU_DPRINTF(sc, RSU_DEBUG_RESET,
1937 "%s: setting operating mode to %d\n",
1938 __func__, opmode);
1939 error = rsu_fw_cmd(sc, R92S_CMD_SET_OPMODE, &opmode, sizeof(opmode));
1940 if (error != 0)
1941 return (error);
1942
1943 memset(&auth, 0, sizeof(auth));
1944 if (vap->iv_flags & IEEE80211_F_WPA) {
1945 auth.mode = R92S_AUTHMODE_WPA;
1946 auth.dot1x = (ni->ni_authmode == IEEE80211_AUTH_8021X);
1947 } else
1948 auth.mode = R92S_AUTHMODE_OPEN;
1949 RSU_DPRINTF(sc, RSU_DEBUG_RESET,
1950 "%s: setting auth mode to %d\n",
1951 __func__, auth.mode);
1952 error = rsu_fw_cmd(sc, R92S_CMD_SET_AUTH, &auth, sizeof(auth));
1953 if (error != 0)
1954 return (error);
1955
1956 memset(buf, 0, sizeof(buf));
1957 bss = (struct ndis_wlan_bssid_ex *)buf;
1958 IEEE80211_ADDR_COPY(bss->macaddr, ni->ni_bssid);
1959 bss->ssid.ssidlen = htole32(ni->ni_esslen);
1960 memcpy(bss->ssid.ssid, ni->ni_essid, ni->ni_esslen);
1961 if (vap->iv_flags & (IEEE80211_F_PRIVACY | IEEE80211_F_WPA))
1962 bss->privacy = htole32(1);
1963 bss->rssi = htole32(ni->ni_avgrssi);
1964 if (ic->ic_curmode == IEEE80211_MODE_11B)
1965 bss->networktype = htole32(NDIS802_11DS);
1966 else
1967 bss->networktype = htole32(NDIS802_11OFDM24);
1968 bss->config.len = htole32(sizeof(bss->config));
1969 bss->config.bintval = htole32(ni->ni_intval);
1970 bss->config.dsconfig = htole32(ieee80211_chan2ieee(ic, ni->ni_chan));
1971 bss->inframode = htole32(NDIS802_11INFRASTRUCTURE);
1972 /* XXX verify how this is supposed to look! */
1973 memcpy(bss->supprates, ni->ni_rates.rs_rates,
1974 ni->ni_rates.rs_nrates);
1975 /* Write the fixed fields of the beacon frame. */
1976 fixed = (struct ndis_802_11_fixed_ies *)&bss[1];
1977 memcpy(&fixed->tstamp, ni->ni_tstamp.data, 8);
1978 fixed->bintval = htole16(ni->ni_intval);
1979 fixed->capabilities = htole16(ni->ni_capinfo);
1980 /* Write IEs to be included in the association request. */
1981 frm = (uint8_t *)&fixed[1];
1982 frm = ieee80211_add_rsn(frm, vap);
1983 frm = ieee80211_add_wpa(frm, vap);
1984 frm = ieee80211_add_qos(frm, ni);
1985 if ((ic->ic_flags & IEEE80211_F_WME) &&
1986 (ni->ni_ies.wme_ie != NULL))
1987 frm = ieee80211_add_wme_info(frm, &ic->ic_wme);
1988 if (ni->ni_flags & IEEE80211_NODE_HT) {
1989 frm = ieee80211_add_htcap(frm, ni);
1990 frm = ieee80211_add_htinfo(frm, ni);
1991 }
1992 bss->ieslen = htole32(frm - (uint8_t *)fixed);
1993 bss->len = htole32(((frm - buf) + 3) & ~3);
1994 RSU_DPRINTF(sc, RSU_DEBUG_RESET | RSU_DEBUG_FWCMD,
1995 "%s: sending join bss command to %s chan %d\n",
1996 __func__,
1997 ether_sprintf(bss->macaddr), le32toh(bss->config.dsconfig));
1998 return (rsu_fw_cmd(sc, R92S_CMD_JOIN_BSS, buf, sizeof(buf)));
1999 }
2000
2001 static int
rsu_disconnect(struct rsu_softc * sc)2002 rsu_disconnect(struct rsu_softc *sc)
2003 {
2004 uint32_t zero = 0; /* :-) */
2005
2006 /* Disassociate from our current BSS. */
2007 RSU_DPRINTF(sc, RSU_DEBUG_STATE | RSU_DEBUG_FWCMD,
2008 "%s: sending disconnect command\n", __func__);
2009 return (rsu_fw_cmd(sc, R92S_CMD_DISCONNECT, &zero, sizeof(zero)));
2010 }
2011
2012 /*
2013 * Map the hardware provided RSSI value to a signal level.
2014 * For the most part it's just something we divide by and cap
2015 * so it doesn't overflow the representation by net80211.
2016 */
2017 static int
rsu_hwrssi_to_rssi(struct rsu_softc * sc,int hw_rssi)2018 rsu_hwrssi_to_rssi(struct rsu_softc *sc, int hw_rssi)
2019 {
2020 int v;
2021
2022 if (hw_rssi == 0)
2023 return (0);
2024 v = hw_rssi >> 4;
2025 if (v > 80)
2026 v = 80;
2027 return (v);
2028 }
2029
2030 CTASSERT(MCLBYTES > sizeof(struct ieee80211_frame));
2031
2032 static void
rsu_event_survey(struct rsu_softc * sc,uint8_t * buf,int len)2033 rsu_event_survey(struct rsu_softc *sc, uint8_t *buf, int len)
2034 {
2035 struct ieee80211com *ic = &sc->sc_ic;
2036 struct ieee80211_frame *wh;
2037 struct ndis_wlan_bssid_ex *bss;
2038 struct ieee80211_rx_stats rxs;
2039 struct mbuf *m;
2040 uint32_t ieslen;
2041 uint32_t pktlen;
2042
2043 if (__predict_false(len < sizeof(*bss)))
2044 return;
2045 bss = (struct ndis_wlan_bssid_ex *)buf;
2046 ieslen = le32toh(bss->ieslen);
2047 /* range check length of information element */
2048 if (__predict_false(ieslen > (uint32_t)(len - sizeof(*bss))))
2049 return;
2050
2051 RSU_DPRINTF(sc, RSU_DEBUG_SCAN,
2052 "%s: found BSS %s: len=%d chan=%d inframode=%d "
2053 "networktype=%d privacy=%d, RSSI=%d\n",
2054 __func__,
2055 ether_sprintf(bss->macaddr), ieslen,
2056 le32toh(bss->config.dsconfig), le32toh(bss->inframode),
2057 le32toh(bss->networktype), le32toh(bss->privacy),
2058 le32toh(bss->rssi));
2059
2060 /* Build a fake beacon frame to let net80211 do all the parsing. */
2061 /* XXX TODO: just call the new scan API methods! */
2062 if (__predict_false(ieslen > (size_t)(MCLBYTES - sizeof(*wh))))
2063 return;
2064 pktlen = sizeof(*wh) + ieslen;
2065 m = m_get2(pktlen, M_NOWAIT, MT_DATA, M_PKTHDR);
2066 if (__predict_false(m == NULL))
2067 return;
2068 wh = mtod(m, struct ieee80211_frame *);
2069 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
2070 IEEE80211_FC0_SUBTYPE_BEACON;
2071 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
2072 USETW(wh->i_dur, 0);
2073 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr);
2074 IEEE80211_ADDR_COPY(wh->i_addr2, bss->macaddr);
2075 IEEE80211_ADDR_COPY(wh->i_addr3, bss->macaddr);
2076 *(uint16_t *)wh->i_seq = 0;
2077 memcpy(&wh[1], (uint8_t *)&bss[1], ieslen);
2078
2079 /* Finalize mbuf. */
2080 m->m_pkthdr.len = m->m_len = pktlen;
2081
2082 /* Set channel flags for input path */
2083 bzero(&rxs, sizeof(rxs));
2084 rxs.r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ;
2085 rxs.r_flags |= IEEE80211_R_NF | IEEE80211_R_RSSI;
2086 rxs.c_ieee = le32toh(bss->config.dsconfig);
2087 rxs.c_freq = ieee80211_ieee2mhz(rxs.c_ieee, 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
rsu_event_join_bss(struct rsu_softc * sc,uint8_t * buf,int len)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
rsu_event_addba_req_report(struct rsu_softc * sc,uint8_t * buf,int len)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
rsu_rx_event(struct rsu_softc * sc,uint8_t code,uint8_t * buf,int len)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
rsu_rx_multi_event(struct rsu_softc * sc,uint8_t * buf,int len)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
rsu_get_rssi(struct rsu_softc * sc,int rate,void * physt)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 *
rsu_rx_copy_to_mbuf(struct rsu_softc * sc,struct r92s_rx_stat * stat,int totlen)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
rsu_get_tsf_low(struct rsu_softc * sc)2342 rsu_get_tsf_low(struct rsu_softc *sc)
2343 {
2344 return (rsu_read_4(sc, R92S_TSFTR));
2345 }
2346
2347 static uint32_t
rsu_get_tsf_high(struct rsu_softc * sc)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 *
rsu_rx_frame(struct rsu_softc * sc,struct mbuf * m)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 *
rsu_rx_multi_frame(struct rsu_softc * sc,uint8_t * buf,int len)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 *
rsu_rxeof(struct usb_xfer * xfer,struct rsu_data * data)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
rsu_bulk_rx_callback(struct usb_xfer * xfer,usb_error_t error)2556 rsu_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2557 {
2558 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2559 struct ieee80211com *ic = &sc->sc_ic;
2560 struct ieee80211_node *ni;
2561 struct mbuf *m = NULL, *next;
2562 struct rsu_data *data;
2563
2564 RSU_ASSERT_LOCKED(sc);
2565
2566 switch (USB_GET_STATE(xfer)) {
2567 case USB_ST_TRANSFERRED:
2568 data = STAILQ_FIRST(&sc->sc_rx_active);
2569 if (data == NULL)
2570 goto tr_setup;
2571 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2572 m = rsu_rxeof(xfer, data);
2573 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2574 /* FALLTHROUGH */
2575 case USB_ST_SETUP:
2576 tr_setup:
2577 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2578 if (data == NULL) {
2579 KASSERT(m == NULL, ("mbuf isn't NULL"));
2580 return;
2581 }
2582 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2583 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2584 usbd_xfer_set_frame_data(xfer, 0, data->buf,
2585 usbd_xfer_max_len(xfer));
2586 usbd_transfer_submit(xfer);
2587 /*
2588 * To avoid LOR we should unlock our private mutex here to call
2589 * ieee80211_input() because here is at the end of a USB
2590 * callback and safe to unlock.
2591 */
2592 while (m != NULL) {
2593 next = m->m_next;
2594 m->m_next = NULL;
2595
2596 ni = rsu_rx_frame(sc, m);
2597 RSU_UNLOCK(sc);
2598
2599 if (ni != NULL) {
2600 if (ni->ni_flags & IEEE80211_NODE_HT)
2601 m->m_flags |= M_AMPDU;
2602 (void)ieee80211_input_mimo(ni, m);
2603 ieee80211_free_node(ni);
2604 } else
2605 (void)ieee80211_input_mimo_all(ic, m);
2606
2607 RSU_LOCK(sc);
2608 m = next;
2609 }
2610 break;
2611 default:
2612 /* needs it to the inactive queue due to a error. */
2613 data = STAILQ_FIRST(&sc->sc_rx_active);
2614 if (data != NULL) {
2615 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2616 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2617 }
2618 if (error != USB_ERR_CANCELLED) {
2619 usbd_xfer_set_stall(xfer);
2620 counter_u64_add(ic->ic_ierrors, 1);
2621 goto tr_setup;
2622 }
2623 break;
2624 }
2625
2626 }
2627
2628 static void
rsu_txeof(struct usb_xfer * xfer,struct rsu_data * data)2629 rsu_txeof(struct usb_xfer *xfer, struct rsu_data *data)
2630 {
2631 #ifdef USB_DEBUG
2632 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2633 #endif
2634
2635 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE, "%s: called; data=%p\n",
2636 __func__,
2637 data);
2638
2639 if (data->m) {
2640 /* XXX status? */
2641 ieee80211_tx_complete(data->ni, data->m, 0);
2642 data->m = NULL;
2643 data->ni = NULL;
2644 }
2645 }
2646
2647 static void
rsu_bulk_tx_callback_sub(struct usb_xfer * xfer,usb_error_t error,uint8_t which)2648 rsu_bulk_tx_callback_sub(struct usb_xfer *xfer, usb_error_t error,
2649 uint8_t which)
2650 {
2651 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2652 struct ieee80211com *ic = &sc->sc_ic;
2653 struct rsu_data *data;
2654
2655 RSU_ASSERT_LOCKED(sc);
2656
2657 switch (USB_GET_STATE(xfer)) {
2658 case USB_ST_TRANSFERRED:
2659 data = STAILQ_FIRST(&sc->sc_tx_active[which]);
2660 if (data == NULL)
2661 goto tr_setup;
2662 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE, "%s: transfer done %p\n",
2663 __func__, data);
2664 STAILQ_REMOVE_HEAD(&sc->sc_tx_active[which], next);
2665 rsu_txeof(xfer, data);
2666 rsu_freebuf(sc, data);
2667 /* FALLTHROUGH */
2668 case USB_ST_SETUP:
2669 tr_setup:
2670 data = STAILQ_FIRST(&sc->sc_tx_pending[which]);
2671 if (data == NULL) {
2672 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE,
2673 "%s: empty pending queue sc %p\n", __func__, sc);
2674 return;
2675 }
2676 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending[which], next);
2677 STAILQ_INSERT_TAIL(&sc->sc_tx_active[which], data, next);
2678 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2679 RSU_DPRINTF(sc, RSU_DEBUG_TXDONE,
2680 "%s: submitting transfer %p\n",
2681 __func__,
2682 data);
2683 usbd_transfer_submit(xfer);
2684 break;
2685 default:
2686 data = STAILQ_FIRST(&sc->sc_tx_active[which]);
2687 if (data != NULL) {
2688 STAILQ_REMOVE_HEAD(&sc->sc_tx_active[which], next);
2689 rsu_txeof(xfer, data);
2690 rsu_freebuf(sc, data);
2691 }
2692 counter_u64_add(ic->ic_oerrors, 1);
2693
2694 if (error != USB_ERR_CANCELLED) {
2695 usbd_xfer_set_stall(xfer);
2696 goto tr_setup;
2697 }
2698 break;
2699 }
2700
2701 /*
2702 * XXX TODO: if the queue is low, flush out FF TX frames.
2703 * Remember to unlock the driver for now; net80211 doesn't
2704 * defer it for us.
2705 */
2706 }
2707
2708 static void
rsu_bulk_tx_callback_be_bk(struct usb_xfer * xfer,usb_error_t error)2709 rsu_bulk_tx_callback_be_bk(struct usb_xfer *xfer, usb_error_t error)
2710 {
2711 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2712
2713 rsu_bulk_tx_callback_sub(xfer, error, RSU_BULK_TX_BE_BK);
2714
2715 /* This kicks the TX taskqueue */
2716 rsu_start(sc);
2717 }
2718
2719 static void
rsu_bulk_tx_callback_vi_vo(struct usb_xfer * xfer,usb_error_t error)2720 rsu_bulk_tx_callback_vi_vo(struct usb_xfer *xfer, usb_error_t error)
2721 {
2722 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2723
2724 rsu_bulk_tx_callback_sub(xfer, error, RSU_BULK_TX_VI_VO);
2725
2726 /* This kicks the TX taskqueue */
2727 rsu_start(sc);
2728 }
2729
2730 static void
rsu_bulk_tx_callback_h2c(struct usb_xfer * xfer,usb_error_t error)2731 rsu_bulk_tx_callback_h2c(struct usb_xfer *xfer, usb_error_t error)
2732 {
2733 struct rsu_softc *sc = usbd_xfer_softc(xfer);
2734
2735 rsu_bulk_tx_callback_sub(xfer, error, RSU_BULK_TX_H2C);
2736
2737 /* This kicks the TX taskqueue */
2738 rsu_start(sc);
2739 }
2740
2741 /*
2742 * Transmit the given frame.
2743 *
2744 * This doesn't free the node or mbuf upon failure.
2745 */
2746 static int
rsu_tx_start(struct rsu_softc * sc,struct ieee80211_node * ni,struct mbuf * m0,struct rsu_data * data)2747 rsu_tx_start(struct rsu_softc *sc, struct ieee80211_node *ni,
2748 struct mbuf *m0, struct rsu_data *data)
2749 {
2750 const struct ieee80211_txparam *tp = ni->ni_txparms;
2751 struct ieee80211vap *vap = ni->ni_vap;
2752 struct ieee80211_frame *wh;
2753 struct ieee80211_key *k = NULL;
2754 struct r92s_tx_desc *txd;
2755 uint8_t rate, ridx, type, cipher, qos;
2756 int prio = 0;
2757 uint8_t which;
2758 int hasqos;
2759 int ismcast;
2760 int xferlen;
2761 int qid;
2762
2763 RSU_ASSERT_LOCKED(sc);
2764
2765 wh = mtod(m0, struct ieee80211_frame *);
2766 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2767 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
2768
2769 RSU_DPRINTF(sc, RSU_DEBUG_TX, "%s: data=%p, m=%p\n",
2770 __func__, data, m0);
2771
2772 /* Choose a TX rate index. */
2773 if (type == IEEE80211_FC0_TYPE_MGT ||
2774 type == IEEE80211_FC0_TYPE_CTL ||
2775 (m0->m_flags & M_EAPOL) != 0)
2776 rate = tp->mgmtrate;
2777 else if (ismcast)
2778 rate = tp->mcastrate;
2779 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
2780 rate = tp->ucastrate;
2781 else
2782 rate = 0;
2783
2784 if (rate != 0)
2785 ridx = rate2ridx(rate);
2786
2787 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
2788 k = ieee80211_crypto_encap(ni, m0);
2789 if (k == NULL) {
2790 device_printf(sc->sc_dev,
2791 "ieee80211_crypto_encap returns NULL.\n");
2792 /* XXX we don't expect the fragmented frames */
2793 return (ENOBUFS);
2794 }
2795 wh = mtod(m0, struct ieee80211_frame *);
2796 }
2797 /* If we have QoS then use it */
2798 /* XXX TODO: mbuf WME/PRI versus TID? */
2799 if (IEEE80211_QOS_HAS_SEQ(wh)) {
2800 /* Has QoS */
2801 prio = M_WME_GETAC(m0);
2802 which = rsu_wme_ac_xfer_map[prio];
2803 hasqos = 1;
2804 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
2805 } else {
2806 /* Non-QoS TID */
2807 /* XXX TODO: tid=0 for non-qos TID? */
2808 which = rsu_wme_ac_xfer_map[WME_AC_BE];
2809 hasqos = 0;
2810 prio = 0;
2811 qos = 0;
2812 }
2813
2814 qid = rsu_ac2qid[prio];
2815 #if 0
2816 switch (type) {
2817 case IEEE80211_FC0_TYPE_CTL:
2818 case IEEE80211_FC0_TYPE_MGT:
2819 which = rsu_wme_ac_xfer_map[WME_AC_VO];
2820 break;
2821 default:
2822 which = rsu_wme_ac_xfer_map[M_WME_GETAC(m0)];
2823 break;
2824 }
2825 hasqos = 0;
2826 #endif
2827
2828 RSU_DPRINTF(sc, RSU_DEBUG_TX, "%s: pri=%d, which=%d, hasqos=%d\n",
2829 __func__,
2830 prio,
2831 which,
2832 hasqos);
2833
2834 /* Fill Tx descriptor. */
2835 txd = (struct r92s_tx_desc *)data->buf;
2836 memset(txd, 0, sizeof(*txd));
2837
2838 txd->txdw0 |= htole32(
2839 SM(R92S_TXDW0_PKTLEN, m0->m_pkthdr.len) |
2840 SM(R92S_TXDW0_OFFSET, sizeof(*txd)) |
2841 R92S_TXDW0_OWN | R92S_TXDW0_FSG | R92S_TXDW0_LSG);
2842
2843 txd->txdw1 |= htole32(
2844 SM(R92S_TXDW1_MACID, R92S_MACID_BSS) | SM(R92S_TXDW1_QSEL, qid));
2845 if (!hasqos)
2846 txd->txdw1 |= htole32(R92S_TXDW1_NONQOS);
2847 if (k != NULL && !(k->wk_flags & IEEE80211_KEY_SWENCRYPT)) {
2848 switch (k->wk_cipher->ic_cipher) {
2849 case IEEE80211_CIPHER_WEP:
2850 cipher = R92S_TXDW1_CIPHER_WEP;
2851 break;
2852 case IEEE80211_CIPHER_TKIP:
2853 cipher = R92S_TXDW1_CIPHER_TKIP;
2854 break;
2855 case IEEE80211_CIPHER_AES_CCM:
2856 cipher = R92S_TXDW1_CIPHER_AES;
2857 break;
2858 default:
2859 cipher = R92S_TXDW1_CIPHER_NONE;
2860 }
2861 txd->txdw1 |= htole32(
2862 SM(R92S_TXDW1_CIPHER, cipher) |
2863 SM(R92S_TXDW1_KEYIDX, k->wk_keyix));
2864 }
2865 /* XXX todo: set AGGEN bit if appropriate? */
2866 txd->txdw2 |= htole32(R92S_TXDW2_BK);
2867 if (ismcast)
2868 txd->txdw2 |= htole32(R92S_TXDW2_BMCAST);
2869
2870 if (!ismcast && (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
2871 IEEE80211_QOS_ACKPOLICY_NOACK)) {
2872 txd->txdw2 |= htole32(R92S_TXDW2_RTY_LMT_ENA);
2873 txd->txdw2 |= htole32(SM(R92S_TXDW2_RTY_LMT, tp->maxretry));
2874 }
2875
2876 /* Force mgmt / mcast / ucast rate if needed. */
2877 if (rate != 0) {
2878 /* Data rate fallback limit (max). */
2879 txd->txdw5 |= htole32(SM(R92S_TXDW5_DATARATE_FB_LMT, 0x1f));
2880 txd->txdw5 |= htole32(SM(R92S_TXDW5_DATARATE, ridx));
2881 txd->txdw4 |= htole32(R92S_TXDW4_DRVRATE);
2882 }
2883
2884 /*
2885 * Firmware will use and increment the sequence number for the
2886 * specified priority.
2887 */
2888 txd->txdw3 |= htole32(SM(R92S_TXDW3_SEQ, prio));
2889
2890 if (ieee80211_radiotap_active_vap(vap)) {
2891 struct rsu_tx_radiotap_header *tap = &sc->sc_txtap;
2892
2893 tap->wt_flags = 0;
2894 ieee80211_radiotap_tx(vap, m0);
2895 }
2896
2897 xferlen = sizeof(*txd) + m0->m_pkthdr.len;
2898 m_copydata(m0, 0, m0->m_pkthdr.len, (caddr_t)&txd[1]);
2899
2900 data->buflen = xferlen;
2901 data->ni = ni;
2902 data->m = m0;
2903 STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
2904
2905 /* start transfer, if any */
2906 usbd_transfer_start(sc->sc_xfer[which]);
2907 return (0);
2908 }
2909
2910 static int
rsu_transmit(struct ieee80211com * ic,struct mbuf * m)2911 rsu_transmit(struct ieee80211com *ic, struct mbuf *m)
2912 {
2913 struct rsu_softc *sc = ic->ic_softc;
2914 int error;
2915
2916 RSU_LOCK(sc);
2917 if (!sc->sc_running) {
2918 RSU_UNLOCK(sc);
2919 return (ENXIO);
2920 }
2921
2922 /*
2923 * XXX TODO: ensure that we treat 'm' as a list of frames
2924 * to transmit!
2925 */
2926 error = mbufq_enqueue(&sc->sc_snd, m);
2927 if (error) {
2928 RSU_DPRINTF(sc, RSU_DEBUG_TX,
2929 "%s: mbufq_enable: failed (%d)\n",
2930 __func__,
2931 error);
2932 RSU_UNLOCK(sc);
2933 return (error);
2934 }
2935 RSU_UNLOCK(sc);
2936
2937 /* This kicks the TX taskqueue */
2938 rsu_start(sc);
2939
2940 return (0);
2941 }
2942
2943 static void
rsu_drain_mbufq(struct rsu_softc * sc)2944 rsu_drain_mbufq(struct rsu_softc *sc)
2945 {
2946 struct mbuf *m;
2947 struct ieee80211_node *ni;
2948
2949 RSU_ASSERT_LOCKED(sc);
2950 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
2951 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
2952 m->m_pkthdr.rcvif = NULL;
2953 ieee80211_free_node(ni);
2954 m_freem(m);
2955 }
2956 }
2957
2958 static void
_rsu_start(struct rsu_softc * sc)2959 _rsu_start(struct rsu_softc *sc)
2960 {
2961 struct ieee80211_node *ni;
2962 struct rsu_data *bf;
2963 struct mbuf *m;
2964
2965 RSU_ASSERT_LOCKED(sc);
2966
2967 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
2968 bf = rsu_getbuf(sc);
2969 if (bf == NULL) {
2970 RSU_DPRINTF(sc, RSU_DEBUG_TX,
2971 "%s: failed to get buffer\n", __func__);
2972 mbufq_prepend(&sc->sc_snd, m);
2973 break;
2974 }
2975
2976 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
2977 m->m_pkthdr.rcvif = NULL;
2978
2979 if (rsu_tx_start(sc, ni, m, bf) != 0) {
2980 RSU_DPRINTF(sc, RSU_DEBUG_TX,
2981 "%s: failed to transmit\n", __func__);
2982 if_inc_counter(ni->ni_vap->iv_ifp,
2983 IFCOUNTER_OERRORS, 1);
2984 rsu_freebuf(sc, bf);
2985 ieee80211_free_node(ni);
2986 m_freem(m);
2987 break;
2988 }
2989 }
2990 }
2991
2992 static void
rsu_start(struct rsu_softc * sc)2993 rsu_start(struct rsu_softc *sc)
2994 {
2995
2996 taskqueue_enqueue(taskqueue_thread, &sc->tx_task);
2997 }
2998
2999 static int
rsu_ioctl_net(struct ieee80211com * ic,u_long cmd,void * data)3000 rsu_ioctl_net(struct ieee80211com *ic, u_long cmd, void *data)
3001 {
3002 struct rsu_softc *sc = ic->ic_softc;
3003 struct ifreq *ifr = (struct ifreq *)data;
3004 int error;
3005
3006 error = 0;
3007 switch (cmd) {
3008 case SIOCSIFCAP:
3009 {
3010 struct ieee80211vap *vap;
3011 int rxmask;
3012
3013 rxmask = ifr->ifr_reqcap & (IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6);
3014
3015 RSU_LOCK(sc);
3016 /* Both RXCSUM bits must be set (or unset). */
3017 if (sc->sc_rx_checksum_enable &&
3018 rxmask != (IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6)) {
3019 rxmask = 0;
3020 sc->sc_rx_checksum_enable = 0;
3021 rsu_rxfilter_set(sc, R92S_RCR_TCP_OFFLD_EN, 0);
3022 } else if (!sc->sc_rx_checksum_enable && rxmask != 0) {
3023 rxmask = IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6;
3024 sc->sc_rx_checksum_enable = 1;
3025 rsu_rxfilter_set(sc, 0, R92S_RCR_TCP_OFFLD_EN);
3026 } else {
3027 /* Nothing to do. */
3028 RSU_UNLOCK(sc);
3029 break;
3030 }
3031 RSU_UNLOCK(sc);
3032
3033 IEEE80211_LOCK(ic); /* XXX */
3034 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
3035 struct ifnet *ifp = vap->iv_ifp;
3036
3037 ifp->if_capenable &=
3038 ~(IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6);
3039 ifp->if_capenable |= rxmask;
3040 }
3041 IEEE80211_UNLOCK(ic);
3042 break;
3043 }
3044 default:
3045 error = ENOTTY; /* for net80211 */
3046 break;
3047 }
3048
3049 return (error);
3050 }
3051
3052 static void
rsu_parent(struct ieee80211com * ic)3053 rsu_parent(struct ieee80211com *ic)
3054 {
3055 struct rsu_softc *sc = ic->ic_softc;
3056
3057 if (ic->ic_nrunning > 0) {
3058 if (rsu_init(sc) == 0)
3059 ieee80211_start_all(ic);
3060 else {
3061 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3062 if (vap != NULL)
3063 ieee80211_stop(vap);
3064 }
3065 } else
3066 rsu_stop(sc);
3067 }
3068
3069 /*
3070 * Power on sequence for A-cut adapters.
3071 */
3072 static void
rsu_power_on_acut(struct rsu_softc * sc)3073 rsu_power_on_acut(struct rsu_softc *sc)
3074 {
3075 uint32_t reg;
3076
3077 rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x53);
3078 rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x57);
3079
3080 /* Enable AFE macro block's bandgap and Mbias. */
3081 rsu_write_1(sc, R92S_AFE_MISC,
3082 rsu_read_1(sc, R92S_AFE_MISC) |
3083 R92S_AFE_MISC_BGEN | R92S_AFE_MISC_MBEN);
3084 /* Enable LDOA15 block. */
3085 rsu_write_1(sc, R92S_LDOA15_CTRL,
3086 rsu_read_1(sc, R92S_LDOA15_CTRL) | R92S_LDA15_EN);
3087
3088 rsu_write_1(sc, R92S_SPS1_CTRL,
3089 rsu_read_1(sc, R92S_SPS1_CTRL) | R92S_SPS1_LDEN);
3090 rsu_ms_delay(sc, 2000);
3091 /* Enable switch regulator block. */
3092 rsu_write_1(sc, R92S_SPS1_CTRL,
3093 rsu_read_1(sc, R92S_SPS1_CTRL) | R92S_SPS1_SWEN);
3094
3095 rsu_write_4(sc, R92S_SPS1_CTRL, 0x00a7b267);
3096
3097 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3098 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) | 0x08);
3099
3100 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3101 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x20);
3102
3103 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3104 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) & ~0x90);
3105
3106 /* Enable AFE clock. */
3107 rsu_write_1(sc, R92S_AFE_XTAL_CTRL + 1,
3108 rsu_read_1(sc, R92S_AFE_XTAL_CTRL + 1) & ~0x04);
3109 /* Enable AFE PLL macro block. */
3110 rsu_write_1(sc, R92S_AFE_PLL_CTRL,
3111 rsu_read_1(sc, R92S_AFE_PLL_CTRL) | 0x11);
3112 /* Attach AFE PLL to MACTOP/BB. */
3113 rsu_write_1(sc, R92S_SYS_ISO_CTRL,
3114 rsu_read_1(sc, R92S_SYS_ISO_CTRL) & ~0x11);
3115
3116 /* Switch to 40MHz clock instead of 80MHz. */
3117 rsu_write_2(sc, R92S_SYS_CLKR,
3118 rsu_read_2(sc, R92S_SYS_CLKR) & ~R92S_SYS_CLKSEL);
3119
3120 /* Enable MAC clock. */
3121 rsu_write_2(sc, R92S_SYS_CLKR,
3122 rsu_read_2(sc, R92S_SYS_CLKR) |
3123 R92S_MAC_CLK_EN | R92S_SYS_CLK_EN);
3124
3125 rsu_write_1(sc, R92S_PMC_FSM, 0x02);
3126
3127 /* Enable digital core and IOREG R/W. */
3128 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3129 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x08);
3130
3131 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3132 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x80);
3133
3134 /* Switch the control path to firmware. */
3135 reg = rsu_read_2(sc, R92S_SYS_CLKR);
3136 reg = (reg & ~R92S_SWHW_SEL) | R92S_FWHW_SEL;
3137 rsu_write_2(sc, R92S_SYS_CLKR, reg);
3138
3139 rsu_write_2(sc, R92S_CR, 0x37fc);
3140
3141 /* Fix USB RX FIFO issue. */
3142 rsu_write_1(sc, 0xfe5c,
3143 rsu_read_1(sc, 0xfe5c) | 0x80);
3144 rsu_write_1(sc, 0x00ab,
3145 rsu_read_1(sc, 0x00ab) | 0xc0);
3146
3147 rsu_write_1(sc, R92S_SYS_CLKR,
3148 rsu_read_1(sc, R92S_SYS_CLKR) & ~R92S_SYS_CPU_CLKSEL);
3149 }
3150
3151 /*
3152 * Power on sequence for B-cut and C-cut adapters.
3153 */
3154 static void
rsu_power_on_bcut(struct rsu_softc * sc)3155 rsu_power_on_bcut(struct rsu_softc *sc)
3156 {
3157 uint32_t reg;
3158 int ntries;
3159
3160 /* Prevent eFuse leakage. */
3161 rsu_write_1(sc, 0x37, 0xb0);
3162 rsu_ms_delay(sc, 10);
3163 rsu_write_1(sc, 0x37, 0x30);
3164
3165 /* Switch the control path to hardware. */
3166 reg = rsu_read_2(sc, R92S_SYS_CLKR);
3167 if (reg & R92S_FWHW_SEL) {
3168 rsu_write_2(sc, R92S_SYS_CLKR,
3169 reg & ~(R92S_SWHW_SEL | R92S_FWHW_SEL));
3170 }
3171 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3172 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) & ~0x8c);
3173 rsu_ms_delay(sc, 1);
3174
3175 rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x53);
3176 rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x57);
3177
3178 reg = rsu_read_1(sc, R92S_AFE_MISC);
3179 rsu_write_1(sc, R92S_AFE_MISC, reg | R92S_AFE_MISC_BGEN);
3180 rsu_write_1(sc, R92S_AFE_MISC, reg | R92S_AFE_MISC_BGEN |
3181 R92S_AFE_MISC_MBEN | R92S_AFE_MISC_I32_EN);
3182
3183 /* Enable PLL. */
3184 rsu_write_1(sc, R92S_LDOA15_CTRL,
3185 rsu_read_1(sc, R92S_LDOA15_CTRL) | R92S_LDA15_EN);
3186
3187 rsu_write_1(sc, R92S_LDOV12D_CTRL,
3188 rsu_read_1(sc, R92S_LDOV12D_CTRL) | R92S_LDV12_EN);
3189
3190 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3191 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) | 0x08);
3192
3193 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3194 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x20);
3195
3196 /* Support 64KB IMEM. */
3197 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
3198 rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) & ~0x97);
3199
3200 /* Enable AFE clock. */
3201 rsu_write_1(sc, R92S_AFE_XTAL_CTRL + 1,
3202 rsu_read_1(sc, R92S_AFE_XTAL_CTRL + 1) & ~0x04);
3203 /* Enable AFE PLL macro block. */
3204 reg = rsu_read_1(sc, R92S_AFE_PLL_CTRL);
3205 rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x11);
3206 rsu_ms_delay(sc, 1);
3207 rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x51);
3208 rsu_ms_delay(sc, 1);
3209 rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x11);
3210 rsu_ms_delay(sc, 1);
3211
3212 /* Attach AFE PLL to MACTOP/BB. */
3213 rsu_write_1(sc, R92S_SYS_ISO_CTRL,
3214 rsu_read_1(sc, R92S_SYS_ISO_CTRL) & ~0x11);
3215
3216 /* Switch to 40MHz clock. */
3217 rsu_write_1(sc, R92S_SYS_CLKR, 0x00);
3218 /* Disable CPU clock and 80MHz SSC. */
3219 rsu_write_1(sc, R92S_SYS_CLKR,
3220 rsu_read_1(sc, R92S_SYS_CLKR) | 0xa0);
3221 /* Enable MAC clock. */
3222 rsu_write_2(sc, R92S_SYS_CLKR,
3223 rsu_read_2(sc, R92S_SYS_CLKR) |
3224 R92S_MAC_CLK_EN | R92S_SYS_CLK_EN);
3225
3226 rsu_write_1(sc, R92S_PMC_FSM, 0x02);
3227
3228 /* Enable digital core and IOREG R/W. */
3229 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3230 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x08);
3231
3232 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
3233 rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x80);
3234
3235 /* Switch the control path to firmware. */
3236 reg = rsu_read_2(sc, R92S_SYS_CLKR);
3237 reg = (reg & ~R92S_SWHW_SEL) | R92S_FWHW_SEL;
3238 rsu_write_2(sc, R92S_SYS_CLKR, reg);
3239
3240 rsu_write_2(sc, R92S_CR, 0x37fc);
3241
3242 /* Fix USB RX FIFO issue. */
3243 rsu_write_1(sc, 0xfe5c,
3244 rsu_read_1(sc, 0xfe5c) | 0x80);
3245
3246 rsu_write_1(sc, R92S_SYS_CLKR,
3247 rsu_read_1(sc, R92S_SYS_CLKR) & ~R92S_SYS_CPU_CLKSEL);
3248
3249 rsu_write_1(sc, 0xfe1c, 0x80);
3250
3251 /* Make sure TxDMA is ready to download firmware. */
3252 for (ntries = 0; ntries < 20; ntries++) {
3253 reg = rsu_read_1(sc, R92S_TCR);
3254 if ((reg & (R92S_TCR_IMEM_CHK_RPT | R92S_TCR_EMEM_CHK_RPT)) ==
3255 (R92S_TCR_IMEM_CHK_RPT | R92S_TCR_EMEM_CHK_RPT))
3256 break;
3257 rsu_ms_delay(sc, 1);
3258 }
3259 if (ntries == 20) {
3260 RSU_DPRINTF(sc, RSU_DEBUG_RESET | RSU_DEBUG_TX,
3261 "%s: TxDMA is not ready\n",
3262 __func__);
3263 /* Reset TxDMA. */
3264 reg = rsu_read_1(sc, R92S_CR);
3265 rsu_write_1(sc, R92S_CR, reg & ~R92S_CR_TXDMA_EN);
3266 rsu_ms_delay(sc, 1);
3267 rsu_write_1(sc, R92S_CR, reg | R92S_CR_TXDMA_EN);
3268 }
3269 }
3270
3271 static void
rsu_power_off(struct rsu_softc * sc)3272 rsu_power_off(struct rsu_softc *sc)
3273 {
3274 /* Turn RF off. */
3275 rsu_write_1(sc, R92S_RF_CTRL, 0x00);
3276 rsu_ms_delay(sc, 5);
3277
3278 /* Turn MAC off. */
3279 /* Switch control path. */
3280 rsu_write_1(sc, R92S_SYS_CLKR + 1, 0x38);
3281 /* Reset MACTOP. */
3282 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1, 0x70);
3283 rsu_write_1(sc, R92S_PMC_FSM, 0x06);
3284 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 0, 0xf9);
3285 rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1, 0xe8);
3286
3287 /* Disable AFE PLL. */
3288 rsu_write_1(sc, R92S_AFE_PLL_CTRL, 0x00);
3289 /* Disable A15V. */
3290 rsu_write_1(sc, R92S_LDOA15_CTRL, 0x54);
3291 /* Disable eFuse 1.2V. */
3292 rsu_write_1(sc, R92S_SYS_FUNC_EN + 1, 0x50);
3293 rsu_write_1(sc, R92S_LDOV12D_CTRL, 0x24);
3294 /* Enable AFE macro block's bandgap and Mbias. */
3295 rsu_write_1(sc, R92S_AFE_MISC, 0x30);
3296 /* Disable 1.6V LDO. */
3297 rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x56);
3298 rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x43);
3299
3300 /* Firmware - tell it to switch things off */
3301 (void) rsu_set_fw_power_state(sc, RSU_PWR_OFF);
3302 }
3303
3304 static int
rsu_fw_loadsection(struct rsu_softc * sc,const uint8_t * buf,int len)3305 rsu_fw_loadsection(struct rsu_softc *sc, const uint8_t *buf, int len)
3306 {
3307 const uint8_t which = rsu_wme_ac_xfer_map[WME_AC_VO];
3308 struct rsu_data *data;
3309 struct r92s_tx_desc *txd;
3310 int mlen;
3311
3312 while (len > 0) {
3313 data = rsu_getbuf(sc);
3314 if (data == NULL)
3315 return (ENOMEM);
3316 txd = (struct r92s_tx_desc *)data->buf;
3317 memset(txd, 0, sizeof(*txd));
3318 if (len <= RSU_TXBUFSZ - sizeof(*txd)) {
3319 /* Last chunk. */
3320 txd->txdw0 |= htole32(R92S_TXDW0_LINIP);
3321 mlen = len;
3322 } else
3323 mlen = RSU_TXBUFSZ - sizeof(*txd);
3324 txd->txdw0 |= htole32(SM(R92S_TXDW0_PKTLEN, mlen));
3325 memcpy(&txd[1], buf, mlen);
3326 data->buflen = sizeof(*txd) + mlen;
3327 RSU_DPRINTF(sc, RSU_DEBUG_TX | RSU_DEBUG_FW | RSU_DEBUG_RESET,
3328 "%s: starting transfer %p\n",
3329 __func__, data);
3330 STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
3331 buf += mlen;
3332 len -= mlen;
3333 }
3334 usbd_transfer_start(sc->sc_xfer[which]);
3335 return (0);
3336 }
3337
3338 CTASSERT(sizeof(size_t) >= sizeof(uint32_t));
3339
3340 static int
rsu_load_firmware(struct rsu_softc * sc)3341 rsu_load_firmware(struct rsu_softc *sc)
3342 {
3343 const struct r92s_fw_hdr *hdr;
3344 struct r92s_fw_priv *dmem;
3345 struct ieee80211com *ic = &sc->sc_ic;
3346 const uint8_t *imem, *emem;
3347 uint32_t imemsz, ememsz;
3348 const struct firmware *fw;
3349 size_t size;
3350 uint32_t reg;
3351 int ntries, error;
3352
3353 if (rsu_read_1(sc, R92S_TCR) & R92S_TCR_FWRDY) {
3354 RSU_DPRINTF(sc, RSU_DEBUG_ANY,
3355 "%s: Firmware already loaded\n",
3356 __func__);
3357 return (0);
3358 }
3359
3360 RSU_UNLOCK(sc);
3361 /* Read firmware image from the filesystem. */
3362 if ((fw = firmware_get("rsu-rtl8712fw")) == NULL) {
3363 device_printf(sc->sc_dev,
3364 "%s: failed load firmware of file rsu-rtl8712fw\n",
3365 __func__);
3366 RSU_LOCK(sc);
3367 return (ENXIO);
3368 }
3369 RSU_LOCK(sc);
3370 size = fw->datasize;
3371 if (size < sizeof(*hdr)) {
3372 device_printf(sc->sc_dev, "firmware too short\n");
3373 error = EINVAL;
3374 goto fail;
3375 }
3376 hdr = (const struct r92s_fw_hdr *)fw->data;
3377 if (hdr->signature != htole16(0x8712) &&
3378 hdr->signature != htole16(0x8192)) {
3379 device_printf(sc->sc_dev,
3380 "invalid firmware signature 0x%x\n",
3381 le16toh(hdr->signature));
3382 error = EINVAL;
3383 goto fail;
3384 }
3385 RSU_DPRINTF(sc, RSU_DEBUG_FW, "FW V%d %02x-%02x %02x:%02x\n",
3386 le16toh(hdr->version), hdr->month, hdr->day, hdr->hour,
3387 hdr->minute);
3388
3389 /* Make sure that driver and firmware are in sync. */
3390 if (hdr->privsz != htole32(sizeof(*dmem))) {
3391 device_printf(sc->sc_dev, "unsupported firmware image\n");
3392 error = EINVAL;
3393 goto fail;
3394 }
3395 /* Get FW sections sizes. */
3396 imemsz = le32toh(hdr->imemsz);
3397 ememsz = le32toh(hdr->sramsz);
3398 /* Check that all FW sections fit in image. */
3399 if (imemsz > (size_t)(size - sizeof(*hdr)) ||
3400 ememsz > (size_t)(size - sizeof(*hdr) - imemsz)) {
3401 device_printf(sc->sc_dev, "firmware too short\n");
3402 error = EINVAL;
3403 goto fail;
3404 }
3405 imem = (const uint8_t *)&hdr[1];
3406 emem = imem + imemsz;
3407
3408 /* Load IMEM section. */
3409 error = rsu_fw_loadsection(sc, imem, imemsz);
3410 if (error != 0) {
3411 device_printf(sc->sc_dev,
3412 "could not load firmware section %s\n", "IMEM");
3413 goto fail;
3414 }
3415 /* Wait for load to complete. */
3416 for (ntries = 0; ntries != 50; ntries++) {
3417 rsu_ms_delay(sc, 10);
3418 reg = rsu_read_1(sc, R92S_TCR);
3419 if (reg & R92S_TCR_IMEM_CODE_DONE)
3420 break;
3421 }
3422 if (ntries == 50) {
3423 device_printf(sc->sc_dev, "timeout waiting for IMEM transfer\n");
3424 error = ETIMEDOUT;
3425 goto fail;
3426 }
3427 /* Load EMEM section. */
3428 error = rsu_fw_loadsection(sc, emem, ememsz);
3429 if (error != 0) {
3430 device_printf(sc->sc_dev,
3431 "could not load firmware section %s\n", "EMEM");
3432 goto fail;
3433 }
3434 /* Wait for load to complete. */
3435 for (ntries = 0; ntries != 50; ntries++) {
3436 rsu_ms_delay(sc, 10);
3437 reg = rsu_read_2(sc, R92S_TCR);
3438 if (reg & R92S_TCR_EMEM_CODE_DONE)
3439 break;
3440 }
3441 if (ntries == 50) {
3442 device_printf(sc->sc_dev, "timeout waiting for EMEM transfer\n");
3443 error = ETIMEDOUT;
3444 goto fail;
3445 }
3446 /* Enable CPU. */
3447 rsu_write_1(sc, R92S_SYS_CLKR,
3448 rsu_read_1(sc, R92S_SYS_CLKR) | R92S_SYS_CPU_CLKSEL);
3449 if (!(rsu_read_1(sc, R92S_SYS_CLKR) & R92S_SYS_CPU_CLKSEL)) {
3450 device_printf(sc->sc_dev, "could not enable system clock\n");
3451 error = EIO;
3452 goto fail;
3453 }
3454 rsu_write_2(sc, R92S_SYS_FUNC_EN,
3455 rsu_read_2(sc, R92S_SYS_FUNC_EN) | R92S_FEN_CPUEN);
3456 if (!(rsu_read_2(sc, R92S_SYS_FUNC_EN) & R92S_FEN_CPUEN)) {
3457 device_printf(sc->sc_dev,
3458 "could not enable microcontroller\n");
3459 error = EIO;
3460 goto fail;
3461 }
3462 /* Wait for CPU to initialize. */
3463 for (ntries = 0; ntries < 100; ntries++) {
3464 if (rsu_read_1(sc, R92S_TCR) & R92S_TCR_IMEM_RDY)
3465 break;
3466 rsu_ms_delay(sc, 1);
3467 }
3468 if (ntries == 100) {
3469 device_printf(sc->sc_dev,
3470 "timeout waiting for microcontroller\n");
3471 error = ETIMEDOUT;
3472 goto fail;
3473 }
3474
3475 /* Update DMEM section before loading. */
3476 dmem = __DECONST(struct r92s_fw_priv *, &hdr->priv);
3477 memset(dmem, 0, sizeof(*dmem));
3478 dmem->hci_sel = R92S_HCI_SEL_USB | R92S_HCI_SEL_8172;
3479 dmem->nendpoints = sc->sc_nendpoints;
3480 dmem->chip_version = sc->cut;
3481 dmem->rf_config = sc->sc_rftype;
3482 dmem->vcs_type = R92S_VCS_TYPE_AUTO;
3483 dmem->vcs_mode = R92S_VCS_MODE_RTS_CTS;
3484 dmem->turbo_mode = 0;
3485 dmem->bw40_en = !! (ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40);
3486 dmem->amsdu2ampdu_en = !! (sc->sc_ht);
3487 dmem->ampdu_en = !! (sc->sc_ht);
3488 dmem->agg_offload = !! (sc->sc_ht);
3489 dmem->qos_en = 1;
3490 dmem->ps_offload = 1;
3491 dmem->lowpower_mode = 1; /* XXX TODO: configurable? */
3492 /* Load DMEM section. */
3493 error = rsu_fw_loadsection(sc, (uint8_t *)dmem, sizeof(*dmem));
3494 if (error != 0) {
3495 device_printf(sc->sc_dev,
3496 "could not load firmware section %s\n", "DMEM");
3497 goto fail;
3498 }
3499 /* Wait for load to complete. */
3500 for (ntries = 0; ntries < 100; ntries++) {
3501 if (rsu_read_1(sc, R92S_TCR) & R92S_TCR_DMEM_CODE_DONE)
3502 break;
3503 rsu_ms_delay(sc, 1);
3504 }
3505 if (ntries == 100) {
3506 device_printf(sc->sc_dev, "timeout waiting for %s transfer\n",
3507 "DMEM");
3508 error = ETIMEDOUT;
3509 goto fail;
3510 }
3511 /* Wait for firmware readiness. */
3512 for (ntries = 0; ntries < 60; ntries++) {
3513 if (!(rsu_read_1(sc, R92S_TCR) & R92S_TCR_FWRDY))
3514 break;
3515 rsu_ms_delay(sc, 1);
3516 }
3517 if (ntries == 60) {
3518 device_printf(sc->sc_dev,
3519 "timeout waiting for firmware readiness\n");
3520 error = ETIMEDOUT;
3521 goto fail;
3522 }
3523 fail:
3524 firmware_put(fw, FIRMWARE_UNLOAD);
3525 return (error);
3526 }
3527
3528
3529 static int
rsu_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)3530 rsu_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
3531 const struct ieee80211_bpf_params *params)
3532 {
3533 struct ieee80211com *ic = ni->ni_ic;
3534 struct rsu_softc *sc = ic->ic_softc;
3535 struct rsu_data *bf;
3536
3537 /* prevent management frames from being sent if we're not ready */
3538 if (!sc->sc_running) {
3539 m_freem(m);
3540 return (ENETDOWN);
3541 }
3542 RSU_LOCK(sc);
3543 bf = rsu_getbuf(sc);
3544 if (bf == NULL) {
3545 m_freem(m);
3546 RSU_UNLOCK(sc);
3547 return (ENOBUFS);
3548 }
3549 if (rsu_tx_start(sc, ni, m, bf) != 0) {
3550 m_freem(m);
3551 rsu_freebuf(sc, bf);
3552 RSU_UNLOCK(sc);
3553 return (EIO);
3554 }
3555 RSU_UNLOCK(sc);
3556
3557 return (0);
3558 }
3559
3560 static void
rsu_rxfilter_init(struct rsu_softc * sc)3561 rsu_rxfilter_init(struct rsu_softc *sc)
3562 {
3563 uint32_t reg;
3564
3565 RSU_ASSERT_LOCKED(sc);
3566
3567 /* Setup multicast filter. */
3568 rsu_set_multi(sc);
3569
3570 /* Adjust Rx filter. */
3571 reg = rsu_read_4(sc, R92S_RCR);
3572 reg &= ~R92S_RCR_AICV;
3573 reg |= R92S_RCR_APP_PHYSTS;
3574 if (sc->sc_rx_checksum_enable)
3575 reg |= R92S_RCR_TCP_OFFLD_EN;
3576 rsu_write_4(sc, R92S_RCR, reg);
3577
3578 /* Update dynamic Rx filter parts. */
3579 rsu_rxfilter_refresh(sc);
3580 }
3581
3582 static void
rsu_rxfilter_set(struct rsu_softc * sc,uint32_t clear,uint32_t set)3583 rsu_rxfilter_set(struct rsu_softc *sc, uint32_t clear, uint32_t set)
3584 {
3585 /* NB: firmware can touch this register too. */
3586 rsu_write_4(sc, R92S_RCR,
3587 (rsu_read_4(sc, R92S_RCR) & ~clear) | set);
3588 }
3589
3590 static void
rsu_rxfilter_refresh(struct rsu_softc * sc)3591 rsu_rxfilter_refresh(struct rsu_softc *sc)
3592 {
3593 struct ieee80211com *ic = &sc->sc_ic;
3594 uint32_t mask_all, mask_min;
3595
3596 RSU_ASSERT_LOCKED(sc);
3597
3598 /* NB: RCR_AMF / RXFLTMAP_MGT are used by firmware. */
3599 mask_all = R92S_RCR_ACF | R92S_RCR_AAP;
3600 mask_min = R92S_RCR_APM;
3601 if (sc->sc_vap_is_running)
3602 mask_min |= R92S_RCR_CBSSID;
3603 else
3604 mask_all |= R92S_RCR_ADF;
3605
3606 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
3607 uint16_t rxfltmap;
3608 if (sc->sc_vap_is_running)
3609 rxfltmap = 0;
3610 else
3611 rxfltmap = R92S_RXFLTMAP_MGT_DEF;
3612 rsu_write_2(sc, R92S_RXFLTMAP_MGT, rxfltmap);
3613 }
3614
3615 if (ic->ic_promisc == 0 && ic->ic_opmode != IEEE80211_M_MONITOR)
3616 rsu_rxfilter_set(sc, mask_all, mask_min);
3617 else
3618 rsu_rxfilter_set(sc, mask_min, mask_all);
3619 }
3620
3621 static int
rsu_init(struct rsu_softc * sc)3622 rsu_init(struct rsu_softc *sc)
3623 {
3624 struct ieee80211com *ic = &sc->sc_ic;
3625 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3626 uint8_t macaddr[IEEE80211_ADDR_LEN];
3627 int error;
3628 int i;
3629
3630 RSU_LOCK(sc);
3631
3632 if (sc->sc_running) {
3633 RSU_UNLOCK(sc);
3634 return (0);
3635 }
3636
3637 /* Ensure the mbuf queue is drained */
3638 rsu_drain_mbufq(sc);
3639
3640 /* Reset power management state. */
3641 rsu_write_1(sc, R92S_USB_HRPWM, 0);
3642
3643 /* Power on adapter. */
3644 if (sc->cut == 1)
3645 rsu_power_on_acut(sc);
3646 else
3647 rsu_power_on_bcut(sc);
3648
3649 /* Load firmware. */
3650 error = rsu_load_firmware(sc);
3651 if (error != 0)
3652 goto fail;
3653
3654 rsu_write_4(sc, R92S_CR,
3655 rsu_read_4(sc, R92S_CR) & ~0xff000000);
3656
3657 /* Use 128 bytes pages. */
3658 rsu_write_1(sc, 0x00b5,
3659 rsu_read_1(sc, 0x00b5) | 0x01);
3660 /* Enable USB Rx aggregation. */
3661 rsu_write_1(sc, 0x00bd,
3662 rsu_read_1(sc, 0x00bd) | 0x80);
3663 /* Set USB Rx aggregation threshold. */
3664 rsu_write_1(sc, 0x00d9, 0x01);
3665 /* Set USB Rx aggregation timeout (1.7ms/4). */
3666 rsu_write_1(sc, 0xfe5b, 0x04);
3667 /* Fix USB Rx FIFO issue. */
3668 rsu_write_1(sc, 0xfe5c,
3669 rsu_read_1(sc, 0xfe5c) | 0x80);
3670
3671 /* Set MAC address. */
3672 IEEE80211_ADDR_COPY(macaddr, vap ? vap->iv_myaddr : ic->ic_macaddr);
3673 rsu_write_region_1(sc, R92S_MACID, macaddr, IEEE80211_ADDR_LEN);
3674
3675 /* It really takes 1.5 seconds for the firmware to boot: */
3676 usb_pause_mtx(&sc->sc_mtx, USB_MS_TO_TICKS(2000));
3677
3678 RSU_DPRINTF(sc, RSU_DEBUG_RESET, "%s: setting MAC address to %s\n",
3679 __func__,
3680 ether_sprintf(macaddr));
3681 error = rsu_fw_cmd(sc, R92S_CMD_SET_MAC_ADDRESS, macaddr,
3682 IEEE80211_ADDR_LEN);
3683 if (error != 0) {
3684 device_printf(sc->sc_dev, "could not set MAC address\n");
3685 goto fail;
3686 }
3687
3688 /* Initialize Rx filter. */
3689 rsu_rxfilter_init(sc);
3690
3691 /* Set PS mode fully active */
3692 error = rsu_set_fw_power_state(sc, RSU_PWR_ACTIVE);
3693 if (error != 0) {
3694 device_printf(sc->sc_dev, "could not set PS mode\n");
3695 goto fail;
3696 }
3697
3698 /* Install static keys (if any). */
3699 error = rsu_reinit_static_keys(sc);
3700 if (error != 0)
3701 goto fail;
3702
3703 sc->sc_extra_scan = 0;
3704 usbd_transfer_start(sc->sc_xfer[RSU_BULK_RX]);
3705
3706 /* We're ready to go. */
3707 sc->sc_running = 1;
3708 RSU_UNLOCK(sc);
3709
3710 return (0);
3711 fail:
3712 /* Need to stop all failed transfers, if any */
3713 for (i = 0; i != RSU_N_TRANSFER; i++)
3714 usbd_transfer_stop(sc->sc_xfer[i]);
3715 RSU_UNLOCK(sc);
3716
3717 return (error);
3718 }
3719
3720 static void
rsu_stop(struct rsu_softc * sc)3721 rsu_stop(struct rsu_softc *sc)
3722 {
3723 int i;
3724
3725 RSU_LOCK(sc);
3726 if (!sc->sc_running) {
3727 RSU_UNLOCK(sc);
3728 return;
3729 }
3730
3731 sc->sc_running = 0;
3732 sc->sc_vap_is_running = 0;
3733 sc->sc_calibrating = 0;
3734 taskqueue_cancel_timeout(taskqueue_thread, &sc->calib_task, NULL);
3735 taskqueue_cancel(taskqueue_thread, &sc->tx_task, NULL);
3736
3737 /* Power off adapter. */
3738 rsu_power_off(sc);
3739
3740 /*
3741 * CAM is not accessible after shutdown;
3742 * all entries are marked (by firmware?) as invalid.
3743 */
3744 memset(sc->free_keys_bmap, 0, sizeof(sc->free_keys_bmap));
3745 memset(sc->keys_bmap, 0, sizeof(sc->keys_bmap));
3746
3747 for (i = 0; i < RSU_N_TRANSFER; i++)
3748 usbd_transfer_stop(sc->sc_xfer[i]);
3749
3750 /* Ensure the mbuf queue is drained */
3751 rsu_drain_mbufq(sc);
3752 RSU_UNLOCK(sc);
3753 }
3754
3755 /*
3756 * Note: usb_pause_mtx() actually releases the mutex before calling pause(),
3757 * which breaks any kind of driver serialisation.
3758 */
3759 static void
rsu_ms_delay(struct rsu_softc * sc,int ms)3760 rsu_ms_delay(struct rsu_softc *sc, int ms)
3761 {
3762
3763 //usb_pause_mtx(&sc->sc_mtx, hz / 1000);
3764 DELAY(ms * 1000);
3765 }
3766