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20#include <linux/module.h>
21#include <linux/firmware.h>
22#include <linux/etherdevice.h>
23#include <linux/vmalloc.h>
24#include <linux/random.h>
25#include <linux/sched.h>
26#include <net/mac80211.h>
27
28#include "cw1200.h"
29#include "txrx.h"
30#include "hwbus.h"
31#include "fwio.h"
32#include "hwio.h"
33#include "bh.h"
34#include "sta.h"
35#include "scan.h"
36#include "debug.h"
37#include "pm.h"
38
39MODULE_AUTHOR("Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>");
40MODULE_DESCRIPTION("Softmac ST-Ericsson CW1200 common code");
41MODULE_LICENSE("GPL");
42MODULE_ALIAS("cw1200_core");
43
44
45static u8 cw1200_mac_template[ETH_ALEN] = {0x02, 0x80, 0xe1, 0x00, 0x00, 0x00};
46module_param_array_named(macaddr, cw1200_mac_template, byte, NULL, 0444);
47MODULE_PARM_DESC(macaddr, "Override platform_data MAC address");
48
49static char *cw1200_sdd_path;
50module_param(cw1200_sdd_path, charp, 0644);
51MODULE_PARM_DESC(cw1200_sdd_path, "Override platform_data SDD file");
52static int cw1200_refclk;
53module_param(cw1200_refclk, int, 0644);
54MODULE_PARM_DESC(cw1200_refclk, "Override platform_data reference clock");
55
56int cw1200_power_mode = wsm_power_mode_quiescent;
57module_param(cw1200_power_mode, int, 0644);
58MODULE_PARM_DESC(cw1200_power_mode, "WSM power mode. 0 == active, 1 == doze, 2 == quiescent (default)");
59
60#define RATETAB_ENT(_rate, _rateid, _flags) \
61 { \
62 .bitrate = (_rate), \
63 .hw_value = (_rateid), \
64 .flags = (_flags), \
65 }
66
67static struct ieee80211_rate cw1200_rates[] = {
68 RATETAB_ENT(10, 0, 0),
69 RATETAB_ENT(20, 1, 0),
70 RATETAB_ENT(55, 2, 0),
71 RATETAB_ENT(110, 3, 0),
72 RATETAB_ENT(60, 6, 0),
73 RATETAB_ENT(90, 7, 0),
74 RATETAB_ENT(120, 8, 0),
75 RATETAB_ENT(180, 9, 0),
76 RATETAB_ENT(240, 10, 0),
77 RATETAB_ENT(360, 11, 0),
78 RATETAB_ENT(480, 12, 0),
79 RATETAB_ENT(540, 13, 0),
80};
81
82static struct ieee80211_rate cw1200_mcs_rates[] = {
83 RATETAB_ENT(65, 14, IEEE80211_TX_RC_MCS),
84 RATETAB_ENT(130, 15, IEEE80211_TX_RC_MCS),
85 RATETAB_ENT(195, 16, IEEE80211_TX_RC_MCS),
86 RATETAB_ENT(260, 17, IEEE80211_TX_RC_MCS),
87 RATETAB_ENT(390, 18, IEEE80211_TX_RC_MCS),
88 RATETAB_ENT(520, 19, IEEE80211_TX_RC_MCS),
89 RATETAB_ENT(585, 20, IEEE80211_TX_RC_MCS),
90 RATETAB_ENT(650, 21, IEEE80211_TX_RC_MCS),
91};
92
93#define cw1200_a_rates (cw1200_rates + 4)
94#define cw1200_a_rates_size (ARRAY_SIZE(cw1200_rates) - 4)
95#define cw1200_g_rates (cw1200_rates + 0)
96#define cw1200_g_rates_size (ARRAY_SIZE(cw1200_rates))
97#define cw1200_n_rates (cw1200_mcs_rates)
98#define cw1200_n_rates_size (ARRAY_SIZE(cw1200_mcs_rates))
99
100
101#define CHAN2G(_channel, _freq, _flags) { \
102 .band = NL80211_BAND_2GHZ, \
103 .center_freq = (_freq), \
104 .hw_value = (_channel), \
105 .flags = (_flags), \
106 .max_antenna_gain = 0, \
107 .max_power = 30, \
108}
109
110#define CHAN5G(_channel, _flags) { \
111 .band = NL80211_BAND_5GHZ, \
112 .center_freq = 5000 + (5 * (_channel)), \
113 .hw_value = (_channel), \
114 .flags = (_flags), \
115 .max_antenna_gain = 0, \
116 .max_power = 30, \
117}
118
119static struct ieee80211_channel cw1200_2ghz_chantable[] = {
120 CHAN2G(1, 2412, 0),
121 CHAN2G(2, 2417, 0),
122 CHAN2G(3, 2422, 0),
123 CHAN2G(4, 2427, 0),
124 CHAN2G(5, 2432, 0),
125 CHAN2G(6, 2437, 0),
126 CHAN2G(7, 2442, 0),
127 CHAN2G(8, 2447, 0),
128 CHAN2G(9, 2452, 0),
129 CHAN2G(10, 2457, 0),
130 CHAN2G(11, 2462, 0),
131 CHAN2G(12, 2467, 0),
132 CHAN2G(13, 2472, 0),
133 CHAN2G(14, 2484, 0),
134};
135
136static struct ieee80211_channel cw1200_5ghz_chantable[] = {
137 CHAN5G(34, 0), CHAN5G(36, 0),
138 CHAN5G(38, 0), CHAN5G(40, 0),
139 CHAN5G(42, 0), CHAN5G(44, 0),
140 CHAN5G(46, 0), CHAN5G(48, 0),
141 CHAN5G(52, 0), CHAN5G(56, 0),
142 CHAN5G(60, 0), CHAN5G(64, 0),
143 CHAN5G(100, 0), CHAN5G(104, 0),
144 CHAN5G(108, 0), CHAN5G(112, 0),
145 CHAN5G(116, 0), CHAN5G(120, 0),
146 CHAN5G(124, 0), CHAN5G(128, 0),
147 CHAN5G(132, 0), CHAN5G(136, 0),
148 CHAN5G(140, 0), CHAN5G(149, 0),
149 CHAN5G(153, 0), CHAN5G(157, 0),
150 CHAN5G(161, 0), CHAN5G(165, 0),
151 CHAN5G(184, 0), CHAN5G(188, 0),
152 CHAN5G(192, 0), CHAN5G(196, 0),
153 CHAN5G(200, 0), CHAN5G(204, 0),
154 CHAN5G(208, 0), CHAN5G(212, 0),
155 CHAN5G(216, 0),
156};
157
158static struct ieee80211_supported_band cw1200_band_2ghz = {
159 .channels = cw1200_2ghz_chantable,
160 .n_channels = ARRAY_SIZE(cw1200_2ghz_chantable),
161 .bitrates = cw1200_g_rates,
162 .n_bitrates = cw1200_g_rates_size,
163 .ht_cap = {
164 .cap = IEEE80211_HT_CAP_GRN_FLD |
165 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT) |
166 IEEE80211_HT_CAP_MAX_AMSDU,
167 .ht_supported = 1,
168 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K,
169 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
170 .mcs = {
171 .rx_mask[0] = 0xFF,
172 .rx_highest = __cpu_to_le16(0x41),
173 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
174 },
175 },
176};
177
178static struct ieee80211_supported_band cw1200_band_5ghz = {
179 .channels = cw1200_5ghz_chantable,
180 .n_channels = ARRAY_SIZE(cw1200_5ghz_chantable),
181 .bitrates = cw1200_a_rates,
182 .n_bitrates = cw1200_a_rates_size,
183 .ht_cap = {
184 .cap = IEEE80211_HT_CAP_GRN_FLD |
185 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT) |
186 IEEE80211_HT_CAP_MAX_AMSDU,
187 .ht_supported = 1,
188 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K,
189 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
190 .mcs = {
191 .rx_mask[0] = 0xFF,
192 .rx_highest = __cpu_to_le16(0x41),
193 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
194 },
195 },
196};
197
198static const unsigned long cw1200_ttl[] = {
199 1 * HZ,
200 2 * HZ,
201 5 * HZ,
202 10 * HZ
203};
204
205static const struct ieee80211_ops cw1200_ops = {
206 .start = cw1200_start,
207 .stop = cw1200_stop,
208 .add_interface = cw1200_add_interface,
209 .remove_interface = cw1200_remove_interface,
210 .change_interface = cw1200_change_interface,
211 .tx = cw1200_tx,
212 .hw_scan = cw1200_hw_scan,
213 .set_tim = cw1200_set_tim,
214 .sta_notify = cw1200_sta_notify,
215 .sta_add = cw1200_sta_add,
216 .sta_remove = cw1200_sta_remove,
217 .set_key = cw1200_set_key,
218 .set_rts_threshold = cw1200_set_rts_threshold,
219 .config = cw1200_config,
220 .bss_info_changed = cw1200_bss_info_changed,
221 .prepare_multicast = cw1200_prepare_multicast,
222 .configure_filter = cw1200_configure_filter,
223 .conf_tx = cw1200_conf_tx,
224 .get_stats = cw1200_get_stats,
225 .ampdu_action = cw1200_ampdu_action,
226 .flush = cw1200_flush,
227#ifdef CONFIG_PM
228 .suspend = cw1200_wow_suspend,
229 .resume = cw1200_wow_resume,
230#endif
231
232
233
234
235};
236
237static int cw1200_ba_rx_tids = -1;
238static int cw1200_ba_tx_tids = -1;
239module_param(cw1200_ba_rx_tids, int, 0644);
240module_param(cw1200_ba_tx_tids, int, 0644);
241MODULE_PARM_DESC(cw1200_ba_rx_tids, "Block ACK RX TIDs");
242MODULE_PARM_DESC(cw1200_ba_tx_tids, "Block ACK TX TIDs");
243
244#ifdef CONFIG_PM
245static const struct wiphy_wowlan_support cw1200_wowlan_support = {
246
247 .flags = WIPHY_WOWLAN_ANY | WIPHY_WOWLAN_DISCONNECT,
248};
249#endif
250
251
252static struct ieee80211_hw *cw1200_init_common(const u8 *macaddr,
253 const bool have_5ghz)
254{
255 int i, band;
256 struct ieee80211_hw *hw;
257 struct cw1200_common *priv;
258
259 hw = ieee80211_alloc_hw(sizeof(struct cw1200_common), &cw1200_ops);
260 if (!hw)
261 return NULL;
262
263 priv = hw->priv;
264 priv->hw = hw;
265 priv->hw_type = -1;
266 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
267 priv->rates = cw1200_rates;
268 priv->mcs_rates = cw1200_n_rates;
269 if (cw1200_ba_rx_tids != -1)
270 priv->ba_rx_tid_mask = cw1200_ba_rx_tids;
271 else
272 priv->ba_rx_tid_mask = 0xFF;
273 if (cw1200_ba_tx_tids != -1)
274 priv->ba_tx_tid_mask = cw1200_ba_tx_tids;
275 else
276 priv->ba_tx_tid_mask = 0xff;
277
278 ieee80211_hw_set(hw, NEED_DTIM_BEFORE_ASSOC);
279 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
280 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
281 ieee80211_hw_set(hw, CONNECTION_MONITOR);
282 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
283 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
284 ieee80211_hw_set(hw, SIGNAL_DBM);
285 ieee80211_hw_set(hw, SUPPORTS_PS);
286
287 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
288 BIT(NL80211_IFTYPE_ADHOC) |
289 BIT(NL80211_IFTYPE_AP) |
290 BIT(NL80211_IFTYPE_MESH_POINT) |
291 BIT(NL80211_IFTYPE_P2P_CLIENT) |
292 BIT(NL80211_IFTYPE_P2P_GO);
293
294#ifdef CONFIG_PM
295 hw->wiphy->wowlan = &cw1200_wowlan_support;
296#endif
297
298 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
299
300 hw->queues = 4;
301
302 priv->rts_threshold = -1;
303
304 hw->max_rates = 8;
305 hw->max_rate_tries = 15;
306 hw->extra_tx_headroom = WSM_TX_EXTRA_HEADROOM +
307 8;
308
309 hw->sta_data_size = sizeof(struct cw1200_sta_priv);
310
311 hw->wiphy->bands[NL80211_BAND_2GHZ] = &cw1200_band_2ghz;
312 if (have_5ghz)
313 hw->wiphy->bands[NL80211_BAND_5GHZ] = &cw1200_band_5ghz;
314
315
316 for (band = 0; band < NUM_NL80211_BANDS; band++) {
317 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
318 if (!sband)
319 continue;
320 for (i = 0; i < sband->n_channels; i++) {
321 sband->channels[i].flags = 0;
322 sband->channels[i].max_antenna_gain = 0;
323 sband->channels[i].max_power = 30;
324 }
325 }
326
327 hw->wiphy->max_scan_ssids = 2;
328 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
329
330 if (macaddr)
331 SET_IEEE80211_PERM_ADDR(hw, (u8 *)macaddr);
332 else
333 SET_IEEE80211_PERM_ADDR(hw, cw1200_mac_template);
334
335
336 if (hw->wiphy->perm_addr[3] == 0 &&
337 hw->wiphy->perm_addr[4] == 0 &&
338 hw->wiphy->perm_addr[5] == 0) {
339 get_random_bytes(&hw->wiphy->perm_addr[3], 3);
340 }
341
342 mutex_init(&priv->wsm_cmd_mux);
343 mutex_init(&priv->conf_mutex);
344 priv->workqueue = create_singlethread_workqueue("cw1200_wq");
345 if (!priv->workqueue) {
346 ieee80211_free_hw(hw);
347 return NULL;
348 }
349
350 sema_init(&priv->scan.lock, 1);
351 INIT_WORK(&priv->scan.work, cw1200_scan_work);
352 INIT_DELAYED_WORK(&priv->scan.probe_work, cw1200_probe_work);
353 INIT_DELAYED_WORK(&priv->scan.timeout, cw1200_scan_timeout);
354 INIT_DELAYED_WORK(&priv->clear_recent_scan_work,
355 cw1200_clear_recent_scan_work);
356 INIT_DELAYED_WORK(&priv->join_timeout, cw1200_join_timeout);
357 INIT_WORK(&priv->unjoin_work, cw1200_unjoin_work);
358 INIT_WORK(&priv->join_complete_work, cw1200_join_complete_work);
359 INIT_WORK(&priv->wep_key_work, cw1200_wep_key_work);
360 INIT_WORK(&priv->tx_policy_upload_work, tx_policy_upload_work);
361 spin_lock_init(&priv->event_queue_lock);
362 INIT_LIST_HEAD(&priv->event_queue);
363 INIT_WORK(&priv->event_handler, cw1200_event_handler);
364 INIT_DELAYED_WORK(&priv->bss_loss_work, cw1200_bss_loss_work);
365 INIT_WORK(&priv->bss_params_work, cw1200_bss_params_work);
366 spin_lock_init(&priv->bss_loss_lock);
367 spin_lock_init(&priv->ps_state_lock);
368 INIT_WORK(&priv->set_cts_work, cw1200_set_cts_work);
369 INIT_WORK(&priv->set_tim_work, cw1200_set_tim_work);
370 INIT_WORK(&priv->multicast_start_work, cw1200_multicast_start_work);
371 INIT_WORK(&priv->multicast_stop_work, cw1200_multicast_stop_work);
372 INIT_WORK(&priv->link_id_work, cw1200_link_id_work);
373 INIT_DELAYED_WORK(&priv->link_id_gc_work, cw1200_link_id_gc_work);
374 INIT_WORK(&priv->linkid_reset_work, cw1200_link_id_reset);
375 INIT_WORK(&priv->update_filtering_work, cw1200_update_filtering_work);
376 INIT_WORK(&priv->set_beacon_wakeup_period_work,
377 cw1200_set_beacon_wakeup_period_work);
378 timer_setup(&priv->mcast_timeout, cw1200_mcast_timeout, 0);
379
380 if (cw1200_queue_stats_init(&priv->tx_queue_stats,
381 CW1200_LINK_ID_MAX,
382 cw1200_skb_dtor,
383 priv)) {
384 destroy_workqueue(priv->workqueue);
385 ieee80211_free_hw(hw);
386 return NULL;
387 }
388
389 for (i = 0; i < 4; ++i) {
390 if (cw1200_queue_init(&priv->tx_queue[i],
391 &priv->tx_queue_stats, i, 16,
392 cw1200_ttl[i])) {
393 for (; i > 0; i--)
394 cw1200_queue_deinit(&priv->tx_queue[i - 1]);
395 cw1200_queue_stats_deinit(&priv->tx_queue_stats);
396 destroy_workqueue(priv->workqueue);
397 ieee80211_free_hw(hw);
398 return NULL;
399 }
400 }
401
402 init_waitqueue_head(&priv->channel_switch_done);
403 init_waitqueue_head(&priv->wsm_cmd_wq);
404 init_waitqueue_head(&priv->wsm_startup_done);
405 init_waitqueue_head(&priv->ps_mode_switch_done);
406 wsm_buf_init(&priv->wsm_cmd_buf);
407 spin_lock_init(&priv->wsm_cmd.lock);
408 priv->wsm_cmd.done = 1;
409 tx_policy_init(priv);
410
411 return hw;
412}
413
414static int cw1200_register_common(struct ieee80211_hw *dev)
415{
416 struct cw1200_common *priv = dev->priv;
417 int err;
418
419#ifdef CONFIG_PM
420 err = cw1200_pm_init(&priv->pm_state, priv);
421 if (err) {
422 pr_err("Cannot init PM. (%d).\n",
423 err);
424 return err;
425 }
426#endif
427
428 err = ieee80211_register_hw(dev);
429 if (err) {
430 pr_err("Cannot register device (%d).\n",
431 err);
432#ifdef CONFIG_PM
433 cw1200_pm_deinit(&priv->pm_state);
434#endif
435 return err;
436 }
437
438 cw1200_debug_init(priv);
439
440 pr_info("Registered as '%s'\n", wiphy_name(dev->wiphy));
441 return 0;
442}
443
444static void cw1200_free_common(struct ieee80211_hw *dev)
445{
446 ieee80211_free_hw(dev);
447}
448
449static void cw1200_unregister_common(struct ieee80211_hw *dev)
450{
451 struct cw1200_common *priv = dev->priv;
452 int i;
453
454 ieee80211_unregister_hw(dev);
455
456 del_timer_sync(&priv->mcast_timeout);
457 cw1200_unregister_bh(priv);
458
459 cw1200_debug_release(priv);
460
461 mutex_destroy(&priv->conf_mutex);
462
463 wsm_buf_deinit(&priv->wsm_cmd_buf);
464
465 destroy_workqueue(priv->workqueue);
466 priv->workqueue = NULL;
467
468 if (priv->sdd) {
469 release_firmware(priv->sdd);
470 priv->sdd = NULL;
471 }
472
473 for (i = 0; i < 4; ++i)
474 cw1200_queue_deinit(&priv->tx_queue[i]);
475
476 cw1200_queue_stats_deinit(&priv->tx_queue_stats);
477#ifdef CONFIG_PM
478 cw1200_pm_deinit(&priv->pm_state);
479#endif
480}
481
482
483u32 cw1200_dpll_from_clk(u16 clk_khz)
484{
485 switch (clk_khz) {
486 case 0x32C8:
487 return 0x1D89D241;
488 case 0x3E80:
489 return 0x000001E1;
490 case 0x41A0:
491 return 0x124931C1;
492 case 0x4B00:
493 return 0x00000191;
494 case 0x5DC0:
495 return 0x00000141;
496 case 0x6590:
497 return 0x0EC4F121;
498 case 0x8340:
499 return 0x092490E1;
500 case 0x9600:
501 return 0x100010C1;
502 case 0x9C40:
503 return 0x000000C1;
504 case 0xBB80:
505 return 0x000000A1;
506 case 0xCB20:
507 return 0x07627091;
508 default:
509 pr_err("Unknown Refclk freq (0x%04x), using 26000KHz\n",
510 clk_khz);
511 return 0x0EC4F121;
512 }
513}
514
515int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
516 struct hwbus_priv *hwbus,
517 struct device *pdev,
518 struct cw1200_common **core,
519 int ref_clk, const u8 *macaddr,
520 const char *sdd_path, bool have_5ghz)
521{
522 int err = -EINVAL;
523 struct ieee80211_hw *dev;
524 struct cw1200_common *priv;
525 struct wsm_operational_mode mode = {
526 .power_mode = cw1200_power_mode,
527 .disable_more_flag_usage = true,
528 };
529
530 dev = cw1200_init_common(macaddr, have_5ghz);
531 if (!dev)
532 goto err;
533
534 priv = dev->priv;
535 priv->hw_refclk = ref_clk;
536 if (cw1200_refclk)
537 priv->hw_refclk = cw1200_refclk;
538
539 priv->sdd_path = (char *)sdd_path;
540 if (cw1200_sdd_path)
541 priv->sdd_path = cw1200_sdd_path;
542
543 priv->hwbus_ops = hwbus_ops;
544 priv->hwbus_priv = hwbus;
545 priv->pdev = pdev;
546 SET_IEEE80211_DEV(priv->hw, pdev);
547
548
549 *core = priv;
550
551 err = cw1200_register_bh(priv);
552 if (err)
553 goto err1;
554
555 err = cw1200_load_firmware(priv);
556 if (err)
557 goto err2;
558
559 if (wait_event_interruptible_timeout(priv->wsm_startup_done,
560 priv->firmware_ready,
561 3*HZ) <= 0) {
562
563
564
565 pr_err("Timeout waiting on device startup\n");
566 err = -ETIMEDOUT;
567 goto err2;
568 }
569
570
571 wsm_set_operational_mode(priv, &mode);
572
573
574 wsm_use_multi_tx_conf(priv, true);
575
576 err = cw1200_register_common(dev);
577 if (err)
578 goto err2;
579
580 return err;
581
582err2:
583 cw1200_unregister_bh(priv);
584err1:
585 cw1200_free_common(dev);
586err:
587 *core = NULL;
588 return err;
589}
590EXPORT_SYMBOL_GPL(cw1200_core_probe);
591
592void cw1200_core_release(struct cw1200_common *self)
593{
594
595 self->hwbus_ops->lock(self->hwbus_priv);
596 __cw1200_irq_enable(self, 0);
597 self->hwbus_ops->unlock(self->hwbus_priv);
598
599
600 cw1200_unregister_common(self->hw);
601 cw1200_free_common(self->hw);
602 return;
603}
604EXPORT_SYMBOL_GPL(cw1200_core_release);
605
