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