1 /*
2 * Copyright (c) 2008-2011 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/dma-mapping.h>
20 #include <linux/slab.h>
21 #include <linux/ath9k_platform.h>
22 #include <linux/module.h>
23 #include <linux/of.h>
24 #include <linux/of_net.h>
25 #include <linux/relay.h>
26 #include <linux/dmi.h>
27 #include <net/ieee80211_radiotap.h>
28
29 #include "ath9k.h"
30
31 struct ath9k_eeprom_ctx {
32 struct completion complete;
33 struct ath_hw *ah;
34 };
35
36 static char *dev_info = "ath9k";
37
38 MODULE_AUTHOR("Atheros Communications");
39 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
40 MODULE_LICENSE("Dual BSD/GPL");
41
42 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
43 module_param_named(debug, ath9k_debug, uint, 0);
44 MODULE_PARM_DESC(debug, "Debugging mask");
45
46 int ath9k_modparam_nohwcrypt;
47 module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444);
48 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
49
50 int ath9k_led_blink;
51 module_param_named(blink, ath9k_led_blink, int, 0444);
52 MODULE_PARM_DESC(blink, "Enable LED blink on activity");
53
54 static int ath9k_led_active_high = -1;
55 module_param_named(led_active_high, ath9k_led_active_high, int, 0444);
56 MODULE_PARM_DESC(led_active_high, "Invert LED polarity");
57
58 static int ath9k_btcoex_enable;
59 module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444);
60 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
61
62 static int ath9k_bt_ant_diversity;
63 module_param_named(bt_ant_diversity, ath9k_bt_ant_diversity, int, 0444);
64 MODULE_PARM_DESC(bt_ant_diversity, "Enable WLAN/BT RX antenna diversity");
65
66 static int ath9k_ps_enable;
67 module_param_named(ps_enable, ath9k_ps_enable, int, 0444);
68 MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave");
69
70 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
71
72 int ath9k_use_chanctx;
73 module_param_named(use_chanctx, ath9k_use_chanctx, int, 0444);
74 MODULE_PARM_DESC(use_chanctx, "Enable channel context for concurrency");
75
76 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
77
78 int ath9k_use_msi;
79 module_param_named(use_msi, ath9k_use_msi, int, 0444);
80 MODULE_PARM_DESC(use_msi, "Use MSI instead of INTx if possible");
81
82 bool is_ath9k_unloaded;
83
84 #ifdef CONFIG_MAC80211_LEDS
85 static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = {
86 { .throughput = 0 * 1024, .blink_time = 334 },
87 { .throughput = 1 * 1024, .blink_time = 260 },
88 { .throughput = 5 * 1024, .blink_time = 220 },
89 { .throughput = 10 * 1024, .blink_time = 190 },
90 { .throughput = 20 * 1024, .blink_time = 170 },
91 { .throughput = 50 * 1024, .blink_time = 150 },
92 { .throughput = 70 * 1024, .blink_time = 130 },
93 { .throughput = 100 * 1024, .blink_time = 110 },
94 { .throughput = 200 * 1024, .blink_time = 80 },
95 { .throughput = 300 * 1024, .blink_time = 50 },
96 };
97 #endif
98
set_use_msi(const struct dmi_system_id * dmi)99 static int __init set_use_msi(const struct dmi_system_id *dmi)
100 {
101 ath9k_use_msi = 1;
102 return 1;
103 }
104
105 static const struct dmi_system_id ath9k_quirks[] __initconst = {
106 {
107 .callback = set_use_msi,
108 .ident = "Dell Inspiron 24-3460",
109 .matches = {
110 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
111 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 24-3460"),
112 },
113 },
114 {
115 .callback = set_use_msi,
116 .ident = "Dell Vostro 3262",
117 .matches = {
118 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
119 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3262"),
120 },
121 },
122 {
123 .callback = set_use_msi,
124 .ident = "Dell Inspiron 3472",
125 .matches = {
126 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
127 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3472"),
128 },
129 },
130 {
131 .callback = set_use_msi,
132 .ident = "Dell Vostro 15-3572",
133 .matches = {
134 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
135 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15-3572"),
136 },
137 },
138 {
139 .callback = set_use_msi,
140 .ident = "Dell Inspiron 14-3473",
141 .matches = {
142 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
143 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 14-3473"),
144 },
145 },
146 {}
147 };
148
149 static void ath9k_deinit_softc(struct ath_softc *sc);
150
ath9k_op_ps_wakeup(struct ath_common * common)151 static void ath9k_op_ps_wakeup(struct ath_common *common)
152 {
153 ath9k_ps_wakeup((struct ath_softc *) common->priv);
154 }
155
ath9k_op_ps_restore(struct ath_common * common)156 static void ath9k_op_ps_restore(struct ath_common *common)
157 {
158 ath9k_ps_restore((struct ath_softc *) common->priv);
159 }
160
161 static const struct ath_ps_ops ath9k_ps_ops = {
162 .wakeup = ath9k_op_ps_wakeup,
163 .restore = ath9k_op_ps_restore,
164 };
165
166 /*
167 * Read and write, they both share the same lock. We do this to serialize
168 * reads and writes on Atheros 802.11n PCI devices only. This is required
169 * as the FIFO on these devices can only accept sanely 2 requests.
170 */
171
ath9k_iowrite32(void * hw_priv,u32 val,u32 reg_offset)172 static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset)
173 {
174 struct ath_hw *ah = hw_priv;
175 struct ath_common *common = ath9k_hw_common(ah);
176 struct ath_softc *sc = (struct ath_softc *) common->priv;
177
178 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
179 unsigned long flags;
180 spin_lock_irqsave(&sc->sc_serial_rw, flags);
181 iowrite32(val, sc->mem + reg_offset);
182 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
183 } else
184 iowrite32(val, sc->mem + reg_offset);
185 }
186
ath9k_ioread32(void * hw_priv,u32 reg_offset)187 static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
188 {
189 struct ath_hw *ah = hw_priv;
190 struct ath_common *common = ath9k_hw_common(ah);
191 struct ath_softc *sc = (struct ath_softc *) common->priv;
192 u32 val;
193
194 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
195 unsigned long flags;
196 spin_lock_irqsave(&sc->sc_serial_rw, flags);
197 val = ioread32(sc->mem + reg_offset);
198 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
199 } else
200 val = ioread32(sc->mem + reg_offset);
201 return val;
202 }
203
ath9k_multi_ioread32(void * hw_priv,u32 * addr,u32 * val,u16 count)204 static void ath9k_multi_ioread32(void *hw_priv, u32 *addr,
205 u32 *val, u16 count)
206 {
207 int i;
208
209 for (i = 0; i < count; i++)
210 val[i] = ath9k_ioread32(hw_priv, addr[i]);
211 }
212
213
__ath9k_reg_rmw(struct ath_softc * sc,u32 reg_offset,u32 set,u32 clr)214 static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset,
215 u32 set, u32 clr)
216 {
217 u32 val;
218
219 val = ioread32(sc->mem + reg_offset);
220 val &= ~clr;
221 val |= set;
222 iowrite32(val, sc->mem + reg_offset);
223
224 return val;
225 }
226
ath9k_reg_rmw(void * hw_priv,u32 reg_offset,u32 set,u32 clr)227 static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
228 {
229 struct ath_hw *ah = hw_priv;
230 struct ath_common *common = ath9k_hw_common(ah);
231 struct ath_softc *sc = (struct ath_softc *) common->priv;
232 unsigned long flags;
233 u32 val;
234
235 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
236 spin_lock_irqsave(&sc->sc_serial_rw, flags);
237 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
238 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
239 } else
240 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
241
242 return val;
243 }
244
245 /**************************/
246 /* Initialization */
247 /**************************/
248
ath9k_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)249 static void ath9k_reg_notifier(struct wiphy *wiphy,
250 struct regulatory_request *request)
251 {
252 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
253 struct ath_softc *sc = hw->priv;
254 struct ath_hw *ah = sc->sc_ah;
255 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
256
257 ath_reg_notifier_apply(wiphy, request, reg);
258
259 /* synchronize DFS detector if regulatory domain changed */
260 if (sc->dfs_detector != NULL)
261 sc->dfs_detector->set_dfs_domain(sc->dfs_detector,
262 request->dfs_region);
263
264 /* Set tx power */
265 if (!ah->curchan)
266 return;
267
268 sc->cur_chan->txpower = 2 * ah->curchan->chan->max_power;
269 ath9k_ps_wakeup(sc);
270 ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
271 ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower,
272 sc->cur_chan->txpower,
273 &sc->cur_chan->cur_txpower);
274 ath9k_ps_restore(sc);
275 }
276
277 /*
278 * This function will allocate both the DMA descriptor structure, and the
279 * buffers it contains. These are used to contain the descriptors used
280 * by the system.
281 */
ath_descdma_setup(struct ath_softc * sc,struct ath_descdma * dd,struct list_head * head,const char * name,int nbuf,int ndesc,bool is_tx)282 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
283 struct list_head *head, const char *name,
284 int nbuf, int ndesc, bool is_tx)
285 {
286 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
287 u8 *ds;
288 int i, bsize, desc_len;
289
290 ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n",
291 name, nbuf, ndesc);
292
293 INIT_LIST_HEAD(head);
294
295 if (is_tx)
296 desc_len = sc->sc_ah->caps.tx_desc_len;
297 else
298 desc_len = sizeof(struct ath_desc);
299
300 /* ath_desc must be a multiple of DWORDs */
301 if ((desc_len % 4) != 0) {
302 ath_err(common, "ath_desc not DWORD aligned\n");
303 BUG_ON((desc_len % 4) != 0);
304 return -ENOMEM;
305 }
306
307 dd->dd_desc_len = desc_len * nbuf * ndesc;
308
309 /*
310 * Need additional DMA memory because we can't use
311 * descriptors that cross the 4K page boundary. Assume
312 * one skipped descriptor per 4K page.
313 */
314 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
315 u32 ndesc_skipped =
316 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
317 u32 dma_len;
318
319 while (ndesc_skipped) {
320 dma_len = ndesc_skipped * desc_len;
321 dd->dd_desc_len += dma_len;
322
323 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
324 }
325 }
326
327 /* allocate descriptors */
328 dd->dd_desc = dmam_alloc_coherent(sc->dev, dd->dd_desc_len,
329 &dd->dd_desc_paddr, GFP_KERNEL);
330 if (!dd->dd_desc)
331 return -ENOMEM;
332
333 ds = dd->dd_desc;
334 ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
335 name, ds, (u32) dd->dd_desc_len,
336 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
337
338 /* allocate buffers */
339 if (is_tx) {
340 struct ath_buf *bf;
341
342 bsize = sizeof(struct ath_buf) * nbuf;
343 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL);
344 if (!bf)
345 return -ENOMEM;
346
347 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
348 bf->bf_desc = ds;
349 bf->bf_daddr = DS2PHYS(dd, ds);
350
351 if (!(sc->sc_ah->caps.hw_caps &
352 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
353 /*
354 * Skip descriptor addresses which can cause 4KB
355 * boundary crossing (addr + length) with a 32 dword
356 * descriptor fetch.
357 */
358 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
359 BUG_ON((caddr_t) bf->bf_desc >=
360 ((caddr_t) dd->dd_desc +
361 dd->dd_desc_len));
362
363 ds += (desc_len * ndesc);
364 bf->bf_desc = ds;
365 bf->bf_daddr = DS2PHYS(dd, ds);
366 }
367 }
368 list_add_tail(&bf->list, head);
369 }
370 } else {
371 struct ath_rxbuf *bf;
372
373 bsize = sizeof(struct ath_rxbuf) * nbuf;
374 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL);
375 if (!bf)
376 return -ENOMEM;
377
378 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
379 bf->bf_desc = ds;
380 bf->bf_daddr = DS2PHYS(dd, ds);
381
382 if (!(sc->sc_ah->caps.hw_caps &
383 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
384 /*
385 * Skip descriptor addresses which can cause 4KB
386 * boundary crossing (addr + length) with a 32 dword
387 * descriptor fetch.
388 */
389 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
390 BUG_ON((caddr_t) bf->bf_desc >=
391 ((caddr_t) dd->dd_desc +
392 dd->dd_desc_len));
393
394 ds += (desc_len * ndesc);
395 bf->bf_desc = ds;
396 bf->bf_daddr = DS2PHYS(dd, ds);
397 }
398 }
399 list_add_tail(&bf->list, head);
400 }
401 }
402 return 0;
403 }
404
ath9k_init_queues(struct ath_softc * sc)405 static int ath9k_init_queues(struct ath_softc *sc)
406 {
407 int i = 0;
408
409 sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah);
410 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
411 ath_cabq_update(sc);
412
413 sc->tx.uapsdq = ath_txq_setup(sc, ATH9K_TX_QUEUE_UAPSD, 0);
414
415 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
416 sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i);
417 sc->tx.txq_map[i]->mac80211_qnum = i;
418 }
419 return 0;
420 }
421
ath9k_init_misc(struct ath_softc * sc)422 static void ath9k_init_misc(struct ath_softc *sc)
423 {
424 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
425 int i = 0;
426
427 timer_setup(&common->ani.timer, ath_ani_calibrate, 0);
428
429 common->last_rssi = ATH_RSSI_DUMMY_MARKER;
430 eth_broadcast_addr(common->bssidmask);
431 sc->beacon.slottime = 9;
432
433 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++)
434 sc->beacon.bslot[i] = NULL;
435
436 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
437 sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT;
438
439 sc->spec_priv.ah = sc->sc_ah;
440 sc->spec_priv.spec_config.enabled = 0;
441 sc->spec_priv.spec_config.short_repeat = true;
442 sc->spec_priv.spec_config.count = 8;
443 sc->spec_priv.spec_config.endless = false;
444 sc->spec_priv.spec_config.period = 0xFF;
445 sc->spec_priv.spec_config.fft_period = 0xF;
446 }
447
ath9k_init_pcoem_platform(struct ath_softc * sc)448 static void ath9k_init_pcoem_platform(struct ath_softc *sc)
449 {
450 struct ath_hw *ah = sc->sc_ah;
451 struct ath9k_hw_capabilities *pCap = &ah->caps;
452 struct ath_common *common = ath9k_hw_common(ah);
453
454 if (!IS_ENABLED(CONFIG_ATH9K_PCOEM))
455 return;
456
457 if (common->bus_ops->ath_bus_type != ATH_PCI)
458 return;
459
460 if (sc->driver_data & (ATH9K_PCI_CUS198 |
461 ATH9K_PCI_CUS230)) {
462 ah->config.xlna_gpio = 9;
463 ah->config.xatten_margin_cfg = true;
464 ah->config.alt_mingainidx = true;
465 ah->config.ant_ctrl_comm2g_switch_enable = 0x000BBB88;
466 sc->ant_comb.low_rssi_thresh = 20;
467 sc->ant_comb.fast_div_bias = 3;
468
469 ath_info(common, "Set parameters for %s\n",
470 (sc->driver_data & ATH9K_PCI_CUS198) ?
471 "CUS198" : "CUS230");
472 }
473
474 if (sc->driver_data & ATH9K_PCI_CUS217)
475 ath_info(common, "CUS217 card detected\n");
476
477 if (sc->driver_data & ATH9K_PCI_CUS252)
478 ath_info(common, "CUS252 card detected\n");
479
480 if (sc->driver_data & ATH9K_PCI_AR9565_1ANT)
481 ath_info(common, "WB335 1-ANT card detected\n");
482
483 if (sc->driver_data & ATH9K_PCI_AR9565_2ANT)
484 ath_info(common, "WB335 2-ANT card detected\n");
485
486 if (sc->driver_data & ATH9K_PCI_KILLER)
487 ath_info(common, "Killer Wireless card detected\n");
488
489 /*
490 * Some WB335 cards do not support antenna diversity. Since
491 * we use a hardcoded value for AR9565 instead of using the
492 * EEPROM/OTP data, remove the combining feature from
493 * the HW capabilities bitmap.
494 */
495 if (sc->driver_data & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) {
496 if (!(sc->driver_data & ATH9K_PCI_BT_ANT_DIV))
497 pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB;
498 }
499
500 if (sc->driver_data & ATH9K_PCI_BT_ANT_DIV) {
501 pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV;
502 ath_info(common, "Set BT/WLAN RX diversity capability\n");
503 }
504
505 if (sc->driver_data & ATH9K_PCI_D3_L1_WAR) {
506 ah->config.pcie_waen = 0x0040473b;
507 ath_info(common, "Enable WAR for ASPM D3/L1\n");
508 }
509
510 /*
511 * The default value of pll_pwrsave is 1.
512 * For certain AR9485 cards, it is set to 0.
513 * For AR9462, AR9565 it's set to 7.
514 */
515 ah->config.pll_pwrsave = 1;
516
517 if (sc->driver_data & ATH9K_PCI_NO_PLL_PWRSAVE) {
518 ah->config.pll_pwrsave = 0;
519 ath_info(common, "Disable PLL PowerSave\n");
520 }
521
522 if (sc->driver_data & ATH9K_PCI_LED_ACT_HI)
523 ah->config.led_active_high = true;
524 }
525
ath9k_eeprom_request_cb(const struct firmware * eeprom_blob,void * ctx)526 static void ath9k_eeprom_request_cb(const struct firmware *eeprom_blob,
527 void *ctx)
528 {
529 struct ath9k_eeprom_ctx *ec = ctx;
530
531 if (eeprom_blob)
532 ec->ah->eeprom_blob = eeprom_blob;
533
534 complete(&ec->complete);
535 }
536
ath9k_eeprom_request(struct ath_softc * sc,const char * name)537 static int ath9k_eeprom_request(struct ath_softc *sc, const char *name)
538 {
539 struct ath9k_eeprom_ctx ec;
540 struct ath_hw *ah = sc->sc_ah;
541 int err;
542
543 /* try to load the EEPROM content asynchronously */
544 init_completion(&ec.complete);
545 ec.ah = sc->sc_ah;
546
547 err = request_firmware_nowait(THIS_MODULE, 1, name, sc->dev, GFP_KERNEL,
548 &ec, ath9k_eeprom_request_cb);
549 if (err < 0) {
550 ath_err(ath9k_hw_common(ah),
551 "EEPROM request failed\n");
552 return err;
553 }
554
555 wait_for_completion(&ec.complete);
556
557 if (!ah->eeprom_blob) {
558 ath_err(ath9k_hw_common(ah),
559 "Unable to load EEPROM file %s\n", name);
560 return -EINVAL;
561 }
562
563 return 0;
564 }
565
ath9k_eeprom_release(struct ath_softc * sc)566 static void ath9k_eeprom_release(struct ath_softc *sc)
567 {
568 release_firmware(sc->sc_ah->eeprom_blob);
569 }
570
ath9k_init_platform(struct ath_softc * sc)571 static int ath9k_init_platform(struct ath_softc *sc)
572 {
573 struct ath9k_platform_data *pdata = sc->dev->platform_data;
574 struct ath_hw *ah = sc->sc_ah;
575 struct ath_common *common = ath9k_hw_common(ah);
576 int ret;
577
578 if (!pdata)
579 return 0;
580
581 if (!pdata->use_eeprom) {
582 ah->ah_flags &= ~AH_USE_EEPROM;
583 ah->gpio_mask = pdata->gpio_mask;
584 ah->gpio_val = pdata->gpio_val;
585 ah->led_pin = pdata->led_pin;
586 ah->is_clk_25mhz = pdata->is_clk_25mhz;
587 ah->get_mac_revision = pdata->get_mac_revision;
588 ah->external_reset = pdata->external_reset;
589 ah->disable_2ghz = pdata->disable_2ghz;
590 ah->disable_5ghz = pdata->disable_5ghz;
591
592 if (!pdata->endian_check)
593 ah->ah_flags |= AH_NO_EEP_SWAP;
594 }
595
596 if (pdata->eeprom_name) {
597 ret = ath9k_eeprom_request(sc, pdata->eeprom_name);
598 if (ret)
599 return ret;
600 }
601
602 if (pdata->led_active_high)
603 ah->config.led_active_high = true;
604
605 if (pdata->tx_gain_buffalo)
606 ah->config.tx_gain_buffalo = true;
607
608 if (pdata->macaddr)
609 ether_addr_copy(common->macaddr, pdata->macaddr);
610
611 return 0;
612 }
613
ath9k_of_init(struct ath_softc * sc)614 static int ath9k_of_init(struct ath_softc *sc)
615 {
616 struct device_node *np = sc->dev->of_node;
617 struct ath_hw *ah = sc->sc_ah;
618 struct ath_common *common = ath9k_hw_common(ah);
619 enum ath_bus_type bus_type = common->bus_ops->ath_bus_type;
620 char eeprom_name[100];
621 int ret;
622
623 if (!of_device_is_available(np))
624 return 0;
625
626 ath_dbg(common, CONFIG, "parsing configuration from OF node\n");
627
628 if (of_property_read_bool(np, "qca,no-eeprom")) {
629 /* ath9k-eeprom-<bus>-<id>.bin */
630 scnprintf(eeprom_name, sizeof(eeprom_name),
631 "ath9k-eeprom-%s-%s.bin",
632 ath_bus_type_to_string(bus_type), dev_name(ah->dev));
633
634 ret = ath9k_eeprom_request(sc, eeprom_name);
635 if (ret)
636 return ret;
637
638 ah->ah_flags &= ~AH_USE_EEPROM;
639 ah->ah_flags |= AH_NO_EEP_SWAP;
640 }
641
642 of_get_mac_address(np, common->macaddr);
643
644 return 0;
645 }
646
ath9k_init_softc(u16 devid,struct ath_softc * sc,const struct ath_bus_ops * bus_ops)647 static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
648 const struct ath_bus_ops *bus_ops)
649 {
650 struct ath_hw *ah = NULL;
651 struct ath9k_hw_capabilities *pCap;
652 struct ath_common *common;
653 int ret = 0, i;
654 int csz = 0;
655
656 ah = devm_kzalloc(sc->dev, sizeof(struct ath_hw), GFP_KERNEL);
657 if (!ah)
658 return -ENOMEM;
659
660 ah->dev = sc->dev;
661 ah->hw = sc->hw;
662 ah->hw_version.devid = devid;
663 ah->ah_flags |= AH_USE_EEPROM;
664 ah->led_pin = -1;
665 ah->reg_ops.read = ath9k_ioread32;
666 ah->reg_ops.multi_read = ath9k_multi_ioread32;
667 ah->reg_ops.write = ath9k_iowrite32;
668 ah->reg_ops.rmw = ath9k_reg_rmw;
669 pCap = &ah->caps;
670
671 common = ath9k_hw_common(ah);
672
673 /* Will be cleared in ath9k_start() */
674 set_bit(ATH_OP_INVALID, &common->op_flags);
675
676 sc->sc_ah = ah;
677 sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET);
678 sc->tx99_power = MAX_RATE_POWER + 1;
679 init_waitqueue_head(&sc->tx_wait);
680 sc->cur_chan = &sc->chanctx[0];
681 if (!ath9k_is_chanctx_enabled())
682 sc->cur_chan->hw_queue_base = 0;
683
684 common->ops = &ah->reg_ops;
685 common->bus_ops = bus_ops;
686 common->ps_ops = &ath9k_ps_ops;
687 common->ah = ah;
688 common->hw = sc->hw;
689 common->priv = sc;
690 common->debug_mask = ath9k_debug;
691 common->btcoex_enabled = ath9k_btcoex_enable == 1;
692 common->disable_ani = false;
693
694 /*
695 * Platform quirks.
696 */
697 ath9k_init_pcoem_platform(sc);
698
699 ret = ath9k_init_platform(sc);
700 if (ret)
701 return ret;
702
703 ret = ath9k_of_init(sc);
704 if (ret)
705 return ret;
706
707 if (ath9k_led_active_high != -1)
708 ah->config.led_active_high = ath9k_led_active_high == 1;
709
710 /*
711 * Enable WLAN/BT RX Antenna diversity only when:
712 *
713 * - BTCOEX is disabled.
714 * - the user manually requests the feature.
715 * - the HW cap is set using the platform data.
716 */
717 if (!common->btcoex_enabled && ath9k_bt_ant_diversity &&
718 (pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV))
719 common->bt_ant_diversity = 1;
720
721 spin_lock_init(&common->cc_lock);
722 spin_lock_init(&sc->intr_lock);
723 spin_lock_init(&sc->sc_serial_rw);
724 spin_lock_init(&sc->sc_pm_lock);
725 spin_lock_init(&sc->chan_lock);
726 mutex_init(&sc->mutex);
727 tasklet_setup(&sc->intr_tq, ath9k_tasklet);
728 tasklet_setup(&sc->bcon_tasklet, ath9k_beacon_tasklet);
729
730 timer_setup(&sc->sleep_timer, ath_ps_full_sleep, 0);
731 INIT_WORK(&sc->hw_reset_work, ath_reset_work);
732 INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
733 INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
734 INIT_DELAYED_WORK(&sc->hw_check_work, ath_hw_check_work);
735
736 ath9k_init_channel_context(sc);
737
738 /*
739 * Cache line size is used to size and align various
740 * structures used to communicate with the hardware.
741 */
742 ath_read_cachesize(common, &csz);
743 common->cachelsz = csz << 2; /* convert to bytes */
744
745 /* Initializes the hardware for all supported chipsets */
746 ret = ath9k_hw_init(ah);
747 if (ret)
748 goto err_hw;
749
750 ret = ath9k_init_queues(sc);
751 if (ret)
752 goto err_queues;
753
754 ret = ath9k_init_btcoex(sc);
755 if (ret)
756 goto err_btcoex;
757
758 ret = ath9k_cmn_init_channels_rates(common);
759 if (ret)
760 goto err_btcoex;
761
762 ret = ath9k_init_p2p(sc);
763 if (ret)
764 goto err_btcoex;
765
766 ath9k_cmn_init_crypto(sc->sc_ah);
767 ath9k_init_misc(sc);
768 ath_chanctx_init(sc);
769 ath9k_offchannel_init(sc);
770
771 if (common->bus_ops->aspm_init)
772 common->bus_ops->aspm_init(common);
773
774 return 0;
775
776 err_btcoex:
777 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
778 if (ATH_TXQ_SETUP(sc, i))
779 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
780 err_queues:
781 ath9k_hw_deinit(ah);
782 err_hw:
783 ath9k_eeprom_release(sc);
784 dev_kfree_skb_any(sc->tx99_skb);
785 return ret;
786 }
787
ath9k_init_band_txpower(struct ath_softc * sc,int band)788 static void ath9k_init_band_txpower(struct ath_softc *sc, int band)
789 {
790 struct ieee80211_supported_band *sband;
791 struct ieee80211_channel *chan;
792 struct ath_hw *ah = sc->sc_ah;
793 struct ath_common *common = ath9k_hw_common(ah);
794 struct cfg80211_chan_def chandef;
795 int i;
796
797 sband = &common->sbands[band];
798 for (i = 0; i < sband->n_channels; i++) {
799 chan = &sband->channels[i];
800 ah->curchan = &ah->channels[chan->hw_value];
801 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20);
802 ath9k_cmn_get_channel(sc->hw, ah, &chandef);
803 ath9k_hw_set_txpowerlimit(ah, MAX_COMBINED_POWER, true);
804 }
805 }
806
ath9k_init_txpower_limits(struct ath_softc * sc)807 static void ath9k_init_txpower_limits(struct ath_softc *sc)
808 {
809 struct ath_hw *ah = sc->sc_ah;
810 struct ath9k_channel *curchan = ah->curchan;
811
812 if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
813 ath9k_init_band_txpower(sc, NL80211_BAND_2GHZ);
814 if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
815 ath9k_init_band_txpower(sc, NL80211_BAND_5GHZ);
816
817 ah->curchan = curchan;
818 }
819
820 static const struct ieee80211_iface_limit if_limits[] = {
821 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) },
822 { .max = 8, .types =
823 #ifdef CONFIG_MAC80211_MESH
824 BIT(NL80211_IFTYPE_MESH_POINT) |
825 #endif
826 BIT(NL80211_IFTYPE_AP) },
827 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
828 BIT(NL80211_IFTYPE_P2P_GO) },
829 };
830
831 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
832
833 static const struct ieee80211_iface_limit if_limits_multi[] = {
834 { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) |
835 BIT(NL80211_IFTYPE_AP) |
836 BIT(NL80211_IFTYPE_P2P_CLIENT) |
837 BIT(NL80211_IFTYPE_P2P_GO) },
838 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
839 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
840 };
841
842 static const struct ieee80211_iface_combination if_comb_multi[] = {
843 {
844 .limits = if_limits_multi,
845 .n_limits = ARRAY_SIZE(if_limits_multi),
846 .max_interfaces = 3,
847 .num_different_channels = 2,
848 .beacon_int_infra_match = true,
849 },
850 };
851
852 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
853
854 static const struct ieee80211_iface_combination if_comb[] = {
855 {
856 .limits = if_limits,
857 .n_limits = ARRAY_SIZE(if_limits),
858 .max_interfaces = 2048,
859 .num_different_channels = 1,
860 .beacon_int_infra_match = true,
861 #ifdef CONFIG_ATH9K_DFS_CERTIFIED
862 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
863 BIT(NL80211_CHAN_WIDTH_20) |
864 BIT(NL80211_CHAN_WIDTH_40),
865 #endif
866 },
867 };
868
869 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
ath9k_set_mcc_capab(struct ath_softc * sc,struct ieee80211_hw * hw)870 static void ath9k_set_mcc_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
871 {
872 struct ath_hw *ah = sc->sc_ah;
873 struct ath_common *common = ath9k_hw_common(ah);
874
875 if (!ath9k_is_chanctx_enabled())
876 return;
877
878 ieee80211_hw_set(hw, QUEUE_CONTROL);
879 hw->queues = ATH9K_NUM_TX_QUEUES;
880 hw->offchannel_tx_hw_queue = hw->queues - 1;
881 hw->wiphy->iface_combinations = if_comb_multi;
882 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi);
883 hw->wiphy->max_scan_ssids = 255;
884 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
885 hw->wiphy->max_remain_on_channel_duration = 10000;
886 hw->chanctx_data_size = sizeof(void *);
887 hw->extra_beacon_tailroom =
888 sizeof(struct ieee80211_p2p_noa_attr) + 9;
889
890 ath_dbg(common, CHAN_CTX, "Use channel contexts\n");
891 }
892 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
893
ath9k_set_hw_capab(struct ath_softc * sc,struct ieee80211_hw * hw)894 static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
895 {
896 struct ath_hw *ah = sc->sc_ah;
897 struct ath_common *common = ath9k_hw_common(ah);
898
899 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
900 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
901 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
902 ieee80211_hw_set(hw, SPECTRUM_MGMT);
903 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
904 ieee80211_hw_set(hw, SIGNAL_DBM);
905 ieee80211_hw_set(hw, RX_INCLUDES_FCS);
906 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
907 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
908 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
909
910 if (ath9k_ps_enable)
911 ieee80211_hw_set(hw, SUPPORTS_PS);
912
913 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
914 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
915
916 if (AR_SREV_9280_20_OR_LATER(ah))
917 hw->radiotap_mcs_details |=
918 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
919 }
920
921 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt)
922 ieee80211_hw_set(hw, MFP_CAPABLE);
923
924 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
925 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
926 NL80211_FEATURE_P2P_GO_CTWIN;
927
928 if (!IS_ENABLED(CONFIG_ATH9K_TX99)) {
929 hw->wiphy->interface_modes =
930 BIT(NL80211_IFTYPE_P2P_GO) |
931 BIT(NL80211_IFTYPE_P2P_CLIENT) |
932 BIT(NL80211_IFTYPE_AP) |
933 BIT(NL80211_IFTYPE_STATION) |
934 BIT(NL80211_IFTYPE_ADHOC) |
935 BIT(NL80211_IFTYPE_MESH_POINT) |
936 BIT(NL80211_IFTYPE_OCB);
937
938 if (ath9k_is_chanctx_enabled())
939 hw->wiphy->interface_modes |=
940 BIT(NL80211_IFTYPE_P2P_DEVICE);
941
942 hw->wiphy->iface_combinations = if_comb;
943 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
944 }
945
946 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
947
948 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
949 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
950 hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
951 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_5_10_MHZ;
952 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
953 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
954
955 hw->queues = 4;
956 hw->max_rates = 4;
957 hw->max_listen_interval = 10;
958 hw->max_rate_tries = 10;
959 hw->sta_data_size = sizeof(struct ath_node);
960 hw->vif_data_size = sizeof(struct ath_vif);
961 hw->txq_data_size = sizeof(struct ath_atx_tid);
962 hw->extra_tx_headroom = 4;
963
964 hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1;
965 hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;
966
967 /* single chain devices with rx diversity */
968 if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
969 hw->wiphy->available_antennas_rx = BIT(0) | BIT(1);
970
971 sc->ant_rx = hw->wiphy->available_antennas_rx;
972 sc->ant_tx = hw->wiphy->available_antennas_tx;
973
974 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
975 hw->wiphy->bands[NL80211_BAND_2GHZ] =
976 &common->sbands[NL80211_BAND_2GHZ];
977 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
978 hw->wiphy->bands[NL80211_BAND_5GHZ] =
979 &common->sbands[NL80211_BAND_5GHZ];
980
981 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
982 ath9k_set_mcc_capab(sc, hw);
983 #endif
984 ath9k_init_wow(hw);
985 ath9k_cmn_reload_chainmask(ah);
986
987 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
988
989 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
990 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS);
991 wiphy_ext_feature_set(hw->wiphy,
992 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
993 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
994 }
995
ath9k_init_device(u16 devid,struct ath_softc * sc,const struct ath_bus_ops * bus_ops)996 int ath9k_init_device(u16 devid, struct ath_softc *sc,
997 const struct ath_bus_ops *bus_ops)
998 {
999 struct ieee80211_hw *hw = sc->hw;
1000 struct ath_common *common;
1001 struct ath_hw *ah;
1002 int error = 0;
1003 struct ath_regulatory *reg;
1004
1005 /* Bring up device */
1006 error = ath9k_init_softc(devid, sc, bus_ops);
1007 if (error)
1008 return error;
1009
1010 ah = sc->sc_ah;
1011 common = ath9k_hw_common(ah);
1012 ath9k_set_hw_capab(sc, hw);
1013
1014 /* Initialize regulatory */
1015 error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
1016 ath9k_reg_notifier);
1017 if (error)
1018 goto deinit;
1019
1020 reg = &common->regulatory;
1021
1022 /* Setup TX DMA */
1023 error = ath_tx_init(sc, ATH_TXBUF);
1024 if (error != 0)
1025 goto deinit;
1026
1027 /* Setup RX DMA */
1028 error = ath_rx_init(sc, ATH_RXBUF);
1029 if (error != 0)
1030 goto deinit;
1031
1032 ath9k_init_txpower_limits(sc);
1033
1034 #ifdef CONFIG_MAC80211_LEDS
1035 /* must be initialized before ieee80211_register_hw */
1036 sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
1037 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
1038 ARRAY_SIZE(ath9k_tpt_blink));
1039 #endif
1040
1041 /* Register with mac80211 */
1042 error = ieee80211_register_hw(hw);
1043 if (error)
1044 goto rx_cleanup;
1045
1046 error = ath9k_init_debug(ah);
1047 if (error) {
1048 ath_err(common, "Unable to create debugfs files\n");
1049 goto unregister;
1050 }
1051
1052 /* Handle world regulatory */
1053 if (!ath_is_world_regd(reg)) {
1054 error = regulatory_hint(hw->wiphy, reg->alpha2);
1055 if (error)
1056 goto debug_cleanup;
1057 }
1058
1059 ath_init_leds(sc);
1060 ath_start_rfkill_poll(sc);
1061
1062 return 0;
1063
1064 debug_cleanup:
1065 ath9k_deinit_debug(sc);
1066 unregister:
1067 ieee80211_unregister_hw(hw);
1068 rx_cleanup:
1069 ath_rx_cleanup(sc);
1070 deinit:
1071 ath9k_deinit_softc(sc);
1072 return error;
1073 }
1074
1075 /*****************************/
1076 /* De-Initialization */
1077 /*****************************/
1078
ath9k_deinit_softc(struct ath_softc * sc)1079 static void ath9k_deinit_softc(struct ath_softc *sc)
1080 {
1081 int i = 0;
1082
1083 ath9k_deinit_p2p(sc);
1084 ath9k_deinit_btcoex(sc);
1085
1086 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1087 if (ATH_TXQ_SETUP(sc, i))
1088 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
1089
1090 del_timer_sync(&sc->sleep_timer);
1091 ath9k_hw_deinit(sc->sc_ah);
1092 if (sc->dfs_detector != NULL)
1093 sc->dfs_detector->exit(sc->dfs_detector);
1094
1095 ath9k_eeprom_release(sc);
1096 }
1097
ath9k_deinit_device(struct ath_softc * sc)1098 void ath9k_deinit_device(struct ath_softc *sc)
1099 {
1100 struct ieee80211_hw *hw = sc->hw;
1101
1102 ath9k_ps_wakeup(sc);
1103
1104 wiphy_rfkill_stop_polling(sc->hw->wiphy);
1105 ath_deinit_leds(sc);
1106
1107 ath9k_ps_restore(sc);
1108
1109 ath9k_deinit_debug(sc);
1110 ath9k_deinit_wow(hw);
1111 ieee80211_unregister_hw(hw);
1112 ath_rx_cleanup(sc);
1113 ath9k_deinit_softc(sc);
1114 }
1115
1116 /************************/
1117 /* Module Hooks */
1118 /************************/
1119
ath9k_init(void)1120 static int __init ath9k_init(void)
1121 {
1122 int error;
1123
1124 error = ath_pci_init();
1125 if (error < 0) {
1126 pr_err("No PCI devices found, driver not installed\n");
1127 error = -ENODEV;
1128 goto err_out;
1129 }
1130
1131 error = ath_ahb_init();
1132 if (error < 0) {
1133 error = -ENODEV;
1134 goto err_pci_exit;
1135 }
1136
1137 dmi_check_system(ath9k_quirks);
1138
1139 return 0;
1140
1141 err_pci_exit:
1142 ath_pci_exit();
1143 err_out:
1144 return error;
1145 }
1146 module_init(ath9k_init);
1147
ath9k_exit(void)1148 static void __exit ath9k_exit(void)
1149 {
1150 is_ath9k_unloaded = true;
1151 ath_ahb_exit();
1152 ath_pci_exit();
1153 pr_info("%s: Driver unloaded\n", dev_info);
1154 }
1155 module_exit(ath9k_exit);
1156
