wl1271: Remove circular interlocking related to the inetaddr notifier chain
[linux-2.6.git] / drivers / net / wireless / wl12xx / wl1271_main.c
1 /*
2  * This file is part of wl1271
3  *
4  * Copyright (C) 2008-2010 Nokia Corporation
5  *
6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License
10  * version 2 as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20  * 02110-1301 USA
21  *
22  */
23
24 #include <linux/module.h>
25 #include <linux/firmware.h>
26 #include <linux/delay.h>
27 #include <linux/spi/spi.h>
28 #include <linux/crc32.h>
29 #include <linux/etherdevice.h>
30 #include <linux/vmalloc.h>
31 #include <linux/inetdevice.h>
32 #include <linux/platform_device.h>
33
34 #include "wl1271.h"
35 #include "wl12xx_80211.h"
36 #include "wl1271_reg.h"
37 #include "wl1271_io.h"
38 #include "wl1271_event.h"
39 #include "wl1271_tx.h"
40 #include "wl1271_rx.h"
41 #include "wl1271_ps.h"
42 #include "wl1271_init.h"
43 #include "wl1271_debugfs.h"
44 #include "wl1271_cmd.h"
45 #include "wl1271_boot.h"
46 #include "wl1271_testmode.h"
47
48 #define WL1271_BOOT_RETRIES 3
49
50 static struct conf_drv_settings default_conf = {
51         .sg = {
52                 .params = {
53                         [CONF_SG_BT_PER_THRESHOLD]                  = 7500,
54                         [CONF_SG_HV3_MAX_OVERRIDE]                  = 0,
55                         [CONF_SG_BT_NFS_SAMPLE_INTERVAL]            = 400,
56                         [CONF_SG_BT_LOAD_RATIO]                     = 50,
57                         [CONF_SG_AUTO_PS_MODE]                      = 0,
58                         [CONF_SG_AUTO_SCAN_PROBE_REQ]               = 170,
59                         [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3]   = 50,
60                         [CONF_SG_ANTENNA_CONFIGURATION]             = 0,
61                         [CONF_SG_BEACON_MISS_PERCENT]               = 60,
62                         [CONF_SG_RATE_ADAPT_THRESH]                 = 12,
63                         [CONF_SG_RATE_ADAPT_SNR]                    = 0,
64                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR]      = 10,
65                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR]      = 30,
66                         [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR]      = 8,
67                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR]       = 20,
68                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR]       = 50,
69                         /* Note: with UPSD, this should be 4 */
70                         [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR]       = 8,
71                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_EDR]     = 7,
72                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_EDR]     = 25,
73                         [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_EDR]     = 20,
74                         /* Note: with UPDS, this should be 15 */
75                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR]      = 8,
76                         /* Note: with UPDS, this should be 50 */
77                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR]      = 40,
78                         /* Note: with UPDS, this should be 10 */
79                         [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR]      = 20,
80                         [CONF_SG_RXT]                               = 1200,
81                         [CONF_SG_TXT]                               = 1000,
82                         [CONF_SG_ADAPTIVE_RXT_TXT]                  = 1,
83                         [CONF_SG_PS_POLL_TIMEOUT]                   = 10,
84                         [CONF_SG_UPSD_TIMEOUT]                      = 10,
85                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MIN_EDR] = 7,
86                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MAX_EDR] = 15,
87                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_MASTER_EDR] = 15,
88                         [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MIN_EDR]  = 8,
89                         [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MAX_EDR]  = 20,
90                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_SLAVE_EDR]  = 15,
91                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MIN_BR]         = 20,
92                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MAX_BR]         = 50,
93                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_BR]         = 10,
94                         [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3]  = 200,
95                         [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP] = 800,
96                         [CONF_SG_PASSIVE_SCAN_A2DP_BT_TIME]         = 75,
97                         [CONF_SG_PASSIVE_SCAN_A2DP_WLAN_TIME]       = 15,
98                         [CONF_SG_HV3_MAX_SERVED]                    = 6,
99                         [CONF_SG_DHCP_TIME]                         = 5000,
100                         [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP]  = 100,
101                 },
102                 .state = CONF_SG_PROTECTIVE,
103         },
104         .rx = {
105                 .rx_msdu_life_time           = 512000,
106                 .packet_detection_threshold  = 0,
107                 .ps_poll_timeout             = 15,
108                 .upsd_timeout                = 15,
109                 .rts_threshold               = 2347,
110                 .rx_cca_threshold            = 0,
111                 .irq_blk_threshold           = 0xFFFF,
112                 .irq_pkt_threshold           = 0,
113                 .irq_timeout                 = 600,
114                 .queue_type                  = CONF_RX_QUEUE_TYPE_LOW_PRIORITY,
115         },
116         .tx = {
117                 .tx_energy_detection         = 0,
118                 .rc_conf                     = {
119                         .enabled_rates       = CONF_HW_BIT_RATE_1MBPS |
120                                                CONF_HW_BIT_RATE_2MBPS,
121                         .short_retry_limit   = 10,
122                         .long_retry_limit    = 10,
123                         .aflags              = 0
124                 },
125                 .ac_conf_count               = 4,
126                 .ac_conf                     = {
127                         [0] = {
128                                 .ac          = CONF_TX_AC_BE,
129                                 .cw_min      = 15,
130                                 .cw_max      = 63,
131                                 .aifsn       = 3,
132                                 .tx_op_limit = 0,
133                         },
134                         [1] = {
135                                 .ac          = CONF_TX_AC_BK,
136                                 .cw_min      = 15,
137                                 .cw_max      = 63,
138                                 .aifsn       = 7,
139                                 .tx_op_limit = 0,
140                         },
141                         [2] = {
142                                 .ac          = CONF_TX_AC_VI,
143                                 .cw_min      = 15,
144                                 .cw_max      = 63,
145                                 .aifsn       = CONF_TX_AIFS_PIFS,
146                                 .tx_op_limit = 3008,
147                         },
148                         [3] = {
149                                 .ac          = CONF_TX_AC_VO,
150                                 .cw_min      = 15,
151                                 .cw_max      = 63,
152                                 .aifsn       = CONF_TX_AIFS_PIFS,
153                                 .tx_op_limit = 1504,
154                         },
155                 },
156                 .tid_conf_count = 7,
157                 .tid_conf = {
158                         [0] = {
159                                 .queue_id    = 0,
160                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
161                                 .tsid        = CONF_TX_AC_BE,
162                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
163                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
164                                 .apsd_conf   = {0, 0},
165                         },
166                         [1] = {
167                                 .queue_id    = 1,
168                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
169                                 .tsid        = CONF_TX_AC_BE,
170                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
171                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
172                                 .apsd_conf   = {0, 0},
173                         },
174                         [2] = {
175                                 .queue_id    = 2,
176                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
177                                 .tsid        = CONF_TX_AC_BE,
178                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
179                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
180                                 .apsd_conf   = {0, 0},
181                         },
182                         [3] = {
183                                 .queue_id    = 3,
184                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
185                                 .tsid        = CONF_TX_AC_BE,
186                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
187                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
188                                 .apsd_conf   = {0, 0},
189                         },
190                         [4] = {
191                                 .queue_id    = 4,
192                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
193                                 .tsid        = CONF_TX_AC_BE,
194                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
195                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
196                                 .apsd_conf   = {0, 0},
197                         },
198                         [5] = {
199                                 .queue_id    = 5,
200                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
201                                 .tsid        = CONF_TX_AC_BE,
202                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
203                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
204                                 .apsd_conf   = {0, 0},
205                         },
206                         [6] = {
207                                 .queue_id    = 6,
208                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
209                                 .tsid        = CONF_TX_AC_BE,
210                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
211                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
212                                 .apsd_conf   = {0, 0},
213                         }
214                 },
215                 .frag_threshold              = IEEE80211_MAX_FRAG_THRESHOLD,
216                 .tx_compl_timeout            = 700,
217                 .tx_compl_threshold          = 4
218         },
219         .conn = {
220                 .wake_up_event               = CONF_WAKE_UP_EVENT_DTIM,
221                 .listen_interval             = 0,
222                 .bcn_filt_mode               = CONF_BCN_FILT_MODE_ENABLED,
223                 .bcn_filt_ie_count           = 1,
224                 .bcn_filt_ie = {
225                         [0] = {
226                                 .ie          = WLAN_EID_CHANNEL_SWITCH,
227                                 .rule        = CONF_BCN_RULE_PASS_ON_APPEARANCE,
228                         }
229                 },
230                 .synch_fail_thold            = 10,
231                 .bss_lose_timeout            = 100,
232                 .beacon_rx_timeout           = 10000,
233                 .broadcast_timeout           = 20000,
234                 .rx_broadcast_in_ps          = 1,
235                 .ps_poll_threshold           = 20,
236                 .sig_trigger_count           = 2,
237                 .sig_trigger = {
238                         [0] = {
239                                 .threshold   = -75,
240                                 .pacing      = 500,
241                                 .metric      = CONF_TRIG_METRIC_RSSI_BEACON,
242                                 .type        = CONF_TRIG_EVENT_TYPE_EDGE,
243                                 .direction   = CONF_TRIG_EVENT_DIR_LOW,
244                                 .hysteresis  = 2,
245                                 .index       = 0,
246                                 .enable      = 1
247                         },
248                         [1] = {
249                                 .threshold   = -75,
250                                 .pacing      = 500,
251                                 .metric      = CONF_TRIG_METRIC_RSSI_BEACON,
252                                 .type        = CONF_TRIG_EVENT_TYPE_EDGE,
253                                 .direction   = CONF_TRIG_EVENT_DIR_HIGH,
254                                 .hysteresis  = 2,
255                                 .index       = 1,
256                                 .enable      = 1
257                         }
258                 },
259                 .sig_weights = {
260                         .rssi_bcn_avg_weight = 10,
261                         .rssi_pkt_avg_weight = 10,
262                         .snr_bcn_avg_weight  = 10,
263                         .snr_pkt_avg_weight  = 10
264                 },
265                 .bet_enable                  = CONF_BET_MODE_ENABLE,
266                 .bet_max_consecutive         = 10,
267                 .psm_entry_retries           = 3
268         },
269         .init = {
270                 .radioparam = {
271                         .fem                 = 1,
272                 }
273         },
274         .itrim = {
275                 .enable = false,
276                 .timeout = 50000,
277         },
278         .pm_config = {
279                 .host_clk_settling_time = 5000,
280                 .host_fast_wakeup_support = false
281         }
282 };
283
284 static void wl1271_device_release(struct device *dev)
285 {
286
287 }
288
289 static struct platform_device wl1271_device = {
290         .name           = "wl1271",
291         .id             = -1,
292
293         /* device model insists to have a release function */
294         .dev            = {
295                 .release = wl1271_device_release,
296         },
297 };
298
299 static LIST_HEAD(wl_list);
300
301 static void wl1271_conf_init(struct wl1271 *wl)
302 {
303
304         /*
305          * This function applies the default configuration to the driver. This
306          * function is invoked upon driver load (spi probe.)
307          *
308          * The configuration is stored in a run-time structure in order to
309          * facilitate for run-time adjustment of any of the parameters. Making
310          * changes to the configuration structure will apply the new values on
311          * the next interface up (wl1271_op_start.)
312          */
313
314         /* apply driver default configuration */
315         memcpy(&wl->conf, &default_conf, sizeof(default_conf));
316 }
317
318
319 static int wl1271_plt_init(struct wl1271 *wl)
320 {
321         struct conf_tx_ac_category *conf_ac;
322         struct conf_tx_tid *conf_tid;
323         int ret, i;
324
325         ret = wl1271_cmd_general_parms(wl);
326         if (ret < 0)
327                 return ret;
328
329         ret = wl1271_cmd_radio_parms(wl);
330         if (ret < 0)
331                 return ret;
332
333         ret = wl1271_init_templates_config(wl);
334         if (ret < 0)
335                 return ret;
336
337         ret = wl1271_acx_init_mem_config(wl);
338         if (ret < 0)
339                 return ret;
340
341         /* PHY layer config */
342         ret = wl1271_init_phy_config(wl);
343         if (ret < 0)
344                 goto out_free_memmap;
345
346         ret = wl1271_acx_dco_itrim_params(wl);
347         if (ret < 0)
348                 goto out_free_memmap;
349
350         /* Initialize connection monitoring thresholds */
351         ret = wl1271_acx_conn_monit_params(wl);
352         if (ret < 0)
353                 goto out_free_memmap;
354
355         /* Bluetooth WLAN coexistence */
356         ret = wl1271_init_pta(wl);
357         if (ret < 0)
358                 goto out_free_memmap;
359
360         /* Energy detection */
361         ret = wl1271_init_energy_detection(wl);
362         if (ret < 0)
363                 goto out_free_memmap;
364
365         /* Default fragmentation threshold */
366         ret = wl1271_acx_frag_threshold(wl);
367         if (ret < 0)
368                 goto out_free_memmap;
369
370         /* Default TID configuration */
371         for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
372                 conf_tid = &wl->conf.tx.tid_conf[i];
373                 ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
374                                          conf_tid->channel_type,
375                                          conf_tid->tsid,
376                                          conf_tid->ps_scheme,
377                                          conf_tid->ack_policy,
378                                          conf_tid->apsd_conf[0],
379                                          conf_tid->apsd_conf[1]);
380                 if (ret < 0)
381                         goto out_free_memmap;
382         }
383
384         /* Default AC configuration */
385         for (i = 0; i < wl->conf.tx.ac_conf_count; i++) {
386                 conf_ac = &wl->conf.tx.ac_conf[i];
387                 ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
388                                         conf_ac->cw_max, conf_ac->aifsn,
389                                         conf_ac->tx_op_limit);
390                 if (ret < 0)
391                         goto out_free_memmap;
392         }
393
394         /* Enable data path */
395         ret = wl1271_cmd_data_path(wl, 1);
396         if (ret < 0)
397                 goto out_free_memmap;
398
399         /* Configure for CAM power saving (ie. always active) */
400         ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
401         if (ret < 0)
402                 goto out_free_memmap;
403
404         /* configure PM */
405         ret = wl1271_acx_pm_config(wl);
406         if (ret < 0)
407                 goto out_free_memmap;
408
409         return 0;
410
411  out_free_memmap:
412         kfree(wl->target_mem_map);
413         wl->target_mem_map = NULL;
414
415         return ret;
416 }
417
418 static void wl1271_fw_status(struct wl1271 *wl,
419                              struct wl1271_fw_status *status)
420 {
421         struct timespec ts;
422         u32 total = 0;
423         int i;
424
425         wl1271_raw_read(wl, FW_STATUS_ADDR, status, sizeof(*status), false);
426
427         wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
428                      "drv_rx_counter = %d, tx_results_counter = %d)",
429                      status->intr,
430                      status->fw_rx_counter,
431                      status->drv_rx_counter,
432                      status->tx_results_counter);
433
434         /* update number of available TX blocks */
435         for (i = 0; i < NUM_TX_QUEUES; i++) {
436                 u32 cnt = le32_to_cpu(status->tx_released_blks[i]) -
437                         wl->tx_blocks_freed[i];
438
439                 wl->tx_blocks_freed[i] =
440                         le32_to_cpu(status->tx_released_blks[i]);
441                 wl->tx_blocks_available += cnt;
442                 total += cnt;
443         }
444
445         /* if more blocks are available now, schedule some tx work */
446         if (total && !skb_queue_empty(&wl->tx_queue))
447                 ieee80211_queue_work(wl->hw, &wl->tx_work);
448
449         /* update the host-chipset time offset */
450         getnstimeofday(&ts);
451         wl->time_offset = (timespec_to_ns(&ts) >> 10) -
452                 (s64)le32_to_cpu(status->fw_localtime);
453 }
454
455 #define WL1271_IRQ_MAX_LOOPS 10
456
457 static void wl1271_irq_work(struct work_struct *work)
458 {
459         int ret;
460         u32 intr;
461         int loopcount = WL1271_IRQ_MAX_LOOPS;
462         unsigned long flags;
463         struct wl1271 *wl =
464                 container_of(work, struct wl1271, irq_work);
465
466         mutex_lock(&wl->mutex);
467
468         wl1271_debug(DEBUG_IRQ, "IRQ work");
469
470         if (unlikely(wl->state == WL1271_STATE_OFF))
471                 goto out;
472
473         ret = wl1271_ps_elp_wakeup(wl, true);
474         if (ret < 0)
475                 goto out;
476
477         spin_lock_irqsave(&wl->wl_lock, flags);
478         while (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags) && loopcount) {
479                 clear_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
480                 spin_unlock_irqrestore(&wl->wl_lock, flags);
481                 loopcount--;
482
483                 wl1271_fw_status(wl, wl->fw_status);
484                 intr = le32_to_cpu(wl->fw_status->intr);
485                 if (!intr) {
486                         wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
487                         continue;
488                 }
489
490                 intr &= WL1271_INTR_MASK;
491
492                 if (intr & WL1271_ACX_INTR_DATA) {
493                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
494
495                         /* check for tx results */
496                         if (wl->fw_status->tx_results_counter !=
497                             (wl->tx_results_count & 0xff))
498                                 wl1271_tx_complete(wl);
499
500                         wl1271_rx(wl, wl->fw_status);
501                 }
502
503                 if (intr & WL1271_ACX_INTR_EVENT_A) {
504                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
505                         wl1271_event_handle(wl, 0);
506                 }
507
508                 if (intr & WL1271_ACX_INTR_EVENT_B) {
509                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
510                         wl1271_event_handle(wl, 1);
511                 }
512
513                 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
514                         wl1271_debug(DEBUG_IRQ,
515                                      "WL1271_ACX_INTR_INIT_COMPLETE");
516
517                 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
518                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
519
520                 spin_lock_irqsave(&wl->wl_lock, flags);
521         }
522
523         if (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags))
524                 ieee80211_queue_work(wl->hw, &wl->irq_work);
525         else
526                 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
527         spin_unlock_irqrestore(&wl->wl_lock, flags);
528
529         wl1271_ps_elp_sleep(wl);
530
531 out:
532         mutex_unlock(&wl->mutex);
533 }
534
535 static int wl1271_fetch_firmware(struct wl1271 *wl)
536 {
537         const struct firmware *fw;
538         int ret;
539
540         ret = request_firmware(&fw, WL1271_FW_NAME, wl1271_wl_to_dev(wl));
541
542         if (ret < 0) {
543                 wl1271_error("could not get firmware: %d", ret);
544                 return ret;
545         }
546
547         if (fw->size % 4) {
548                 wl1271_error("firmware size is not multiple of 32 bits: %zu",
549                              fw->size);
550                 ret = -EILSEQ;
551                 goto out;
552         }
553
554         wl->fw_len = fw->size;
555         wl->fw = vmalloc(wl->fw_len);
556
557         if (!wl->fw) {
558                 wl1271_error("could not allocate memory for the firmware");
559                 ret = -ENOMEM;
560                 goto out;
561         }
562
563         memcpy(wl->fw, fw->data, wl->fw_len);
564
565         ret = 0;
566
567 out:
568         release_firmware(fw);
569
570         return ret;
571 }
572
573 static int wl1271_fetch_nvs(struct wl1271 *wl)
574 {
575         const struct firmware *fw;
576         int ret;
577
578         ret = request_firmware(&fw, WL1271_NVS_NAME, wl1271_wl_to_dev(wl));
579
580         if (ret < 0) {
581                 wl1271_error("could not get nvs file: %d", ret);
582                 return ret;
583         }
584
585         if (fw->size != sizeof(struct wl1271_nvs_file)) {
586                 wl1271_error("nvs size is not as expected: %zu != %zu",
587                              fw->size, sizeof(struct wl1271_nvs_file));
588                 ret = -EILSEQ;
589                 goto out;
590         }
591
592         wl->nvs = kmalloc(sizeof(struct wl1271_nvs_file), GFP_KERNEL);
593
594         if (!wl->nvs) {
595                 wl1271_error("could not allocate memory for the nvs file");
596                 ret = -ENOMEM;
597                 goto out;
598         }
599
600         memcpy(wl->nvs, fw->data, sizeof(struct wl1271_nvs_file));
601
602 out:
603         release_firmware(fw);
604
605         return ret;
606 }
607
608 static void wl1271_fw_wakeup(struct wl1271 *wl)
609 {
610         u32 elp_reg;
611
612         elp_reg = ELPCTRL_WAKE_UP;
613         wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
614 }
615
616 static int wl1271_setup(struct wl1271 *wl)
617 {
618         wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
619         if (!wl->fw_status)
620                 return -ENOMEM;
621
622         wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
623         if (!wl->tx_res_if) {
624                 kfree(wl->fw_status);
625                 return -ENOMEM;
626         }
627
628         INIT_WORK(&wl->irq_work, wl1271_irq_work);
629         INIT_WORK(&wl->tx_work, wl1271_tx_work);
630         return 0;
631 }
632
633 static int wl1271_chip_wakeup(struct wl1271 *wl)
634 {
635         struct wl1271_partition_set partition;
636         int ret = 0;
637
638         msleep(WL1271_PRE_POWER_ON_SLEEP);
639         wl1271_power_on(wl);
640         msleep(WL1271_POWER_ON_SLEEP);
641         wl1271_io_reset(wl);
642         wl1271_io_init(wl);
643
644         /* We don't need a real memory partition here, because we only want
645          * to use the registers at this point. */
646         memset(&partition, 0, sizeof(partition));
647         partition.reg.start = REGISTERS_BASE;
648         partition.reg.size = REGISTERS_DOWN_SIZE;
649         wl1271_set_partition(wl, &partition);
650
651         /* ELP module wake up */
652         wl1271_fw_wakeup(wl);
653
654         /* whal_FwCtrl_BootSm() */
655
656         /* 0. read chip id from CHIP_ID */
657         wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
658
659         /* 1. check if chip id is valid */
660
661         switch (wl->chip.id) {
662         case CHIP_ID_1271_PG10:
663                 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
664                                wl->chip.id);
665
666                 ret = wl1271_setup(wl);
667                 if (ret < 0)
668                         goto out;
669                 break;
670         case CHIP_ID_1271_PG20:
671                 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
672                              wl->chip.id);
673
674                 ret = wl1271_setup(wl);
675                 if (ret < 0)
676                         goto out;
677                 break;
678         default:
679                 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
680                 ret = -ENODEV;
681                 goto out;
682         }
683
684         if (wl->fw == NULL) {
685                 ret = wl1271_fetch_firmware(wl);
686                 if (ret < 0)
687                         goto out;
688         }
689
690         /* No NVS from netlink, try to get it from the filesystem */
691         if (wl->nvs == NULL) {
692                 ret = wl1271_fetch_nvs(wl);
693                 if (ret < 0)
694                         goto out;
695         }
696
697 out:
698         return ret;
699 }
700
701 int wl1271_plt_start(struct wl1271 *wl)
702 {
703         int retries = WL1271_BOOT_RETRIES;
704         int ret;
705
706         mutex_lock(&wl->mutex);
707
708         wl1271_notice("power up");
709
710         if (wl->state != WL1271_STATE_OFF) {
711                 wl1271_error("cannot go into PLT state because not "
712                              "in off state: %d", wl->state);
713                 ret = -EBUSY;
714                 goto out;
715         }
716
717         while (retries) {
718                 retries--;
719                 ret = wl1271_chip_wakeup(wl);
720                 if (ret < 0)
721                         goto power_off;
722
723                 ret = wl1271_boot(wl);
724                 if (ret < 0)
725                         goto power_off;
726
727                 ret = wl1271_plt_init(wl);
728                 if (ret < 0)
729                         goto irq_disable;
730
731                 wl->state = WL1271_STATE_PLT;
732                 wl1271_notice("firmware booted in PLT mode (%s)",
733                               wl->chip.fw_ver);
734                 goto out;
735
736 irq_disable:
737                 wl1271_disable_interrupts(wl);
738                 mutex_unlock(&wl->mutex);
739                 /* Unlocking the mutex in the middle of handling is
740                    inherently unsafe. In this case we deem it safe to do,
741                    because we need to let any possibly pending IRQ out of
742                    the system (and while we are WL1271_STATE_OFF the IRQ
743                    work function will not do anything.) Also, any other
744                    possible concurrent operations will fail due to the
745                    current state, hence the wl1271 struct should be safe. */
746                 cancel_work_sync(&wl->irq_work);
747                 mutex_lock(&wl->mutex);
748 power_off:
749                 wl1271_power_off(wl);
750         }
751
752         wl1271_error("firmware boot in PLT mode failed despite %d retries",
753                      WL1271_BOOT_RETRIES);
754 out:
755         mutex_unlock(&wl->mutex);
756
757         return ret;
758 }
759
760 int wl1271_plt_stop(struct wl1271 *wl)
761 {
762         int ret = 0;
763
764         mutex_lock(&wl->mutex);
765
766         wl1271_notice("power down");
767
768         if (wl->state != WL1271_STATE_PLT) {
769                 wl1271_error("cannot power down because not in PLT "
770                              "state: %d", wl->state);
771                 ret = -EBUSY;
772                 goto out;
773         }
774
775         wl1271_disable_interrupts(wl);
776         wl1271_power_off(wl);
777
778         wl->state = WL1271_STATE_OFF;
779         wl->rx_counter = 0;
780
781 out:
782         mutex_unlock(&wl->mutex);
783
784         return ret;
785 }
786
787
788 static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
789 {
790         struct wl1271 *wl = hw->priv;
791         struct ieee80211_conf *conf = &hw->conf;
792         struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
793         struct ieee80211_sta *sta = txinfo->control.sta;
794         unsigned long flags;
795
796         /* peek into the rates configured in the STA entry */
797         spin_lock_irqsave(&wl->wl_lock, flags);
798         if (sta && sta->supp_rates[conf->channel->band] != wl->sta_rate_set) {
799                 wl->sta_rate_set = sta->supp_rates[conf->channel->band];
800                 set_bit(WL1271_FLAG_STA_RATES_CHANGED, &wl->flags);
801         }
802         spin_unlock_irqrestore(&wl->wl_lock, flags);
803
804         /* queue the packet */
805         skb_queue_tail(&wl->tx_queue, skb);
806
807         /*
808          * The chip specific setup must run before the first TX packet -
809          * before that, the tx_work will not be initialized!
810          */
811
812         ieee80211_queue_work(wl->hw, &wl->tx_work);
813
814         /*
815          * The workqueue is slow to process the tx_queue and we need stop
816          * the queue here, otherwise the queue will get too long.
817          */
818         if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
819                 wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
820
821                 spin_lock_irqsave(&wl->wl_lock, flags);
822                 ieee80211_stop_queues(wl->hw);
823                 set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
824                 spin_unlock_irqrestore(&wl->wl_lock, flags);
825         }
826
827         return NETDEV_TX_OK;
828 }
829
830 static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
831                              void *arg)
832 {
833         struct net_device *dev;
834         struct wireless_dev *wdev;
835         struct wiphy *wiphy;
836         struct ieee80211_hw *hw;
837         struct wl1271 *wl;
838         struct wl1271 *wl_temp;
839         struct in_device *idev;
840         struct in_ifaddr *ifa = arg;
841         int ret = 0;
842
843         /* FIXME: this ugly function should probably be implemented in the
844          * mac80211, and here should only be a simple callback handling actual
845          * setting of the filters. Now we need to dig up references to
846          * various structures to gain access to what we need.
847          * Also, because of this, there is no "initial" setting of the filter
848          * in "op_start", because we don't want to dig up struct net_device
849          * there - the filter will be set upon first change of the interface
850          * IP address. */
851
852         dev = ifa->ifa_dev->dev;
853
854         wdev = dev->ieee80211_ptr;
855         if (wdev == NULL)
856                 return NOTIFY_DONE;
857
858         wiphy = wdev->wiphy;
859         if (wiphy == NULL)
860                 return NOTIFY_DONE;
861
862         hw = wiphy_priv(wiphy);
863         if (hw == NULL)
864                 return NOTIFY_DONE;
865
866         /* Check that the interface is one supported by this driver. */
867         wl_temp = hw->priv;
868         list_for_each_entry(wl, &wl_list, list) {
869                 if (wl == wl_temp)
870                         break;
871         }
872         if (wl == NULL)
873                 return NOTIFY_DONE;
874
875         /* Get the interface IP address for the device. "ifa" will become
876            NULL if:
877              - there is no IPV4 protocol address configured
878              - there are multiple (virtual) IPV4 addresses configured
879            When "ifa" is NULL, filtering will be disabled.
880         */
881         ifa = NULL;
882         idev = dev->ip_ptr;
883         if (idev)
884                 ifa = idev->ifa_list;
885
886         if (ifa && ifa->ifa_next)
887                 ifa = NULL;
888
889         mutex_lock(&wl->mutex);
890
891         if (wl->state == WL1271_STATE_OFF)
892                 goto out;
893
894         ret = wl1271_ps_elp_wakeup(wl, false);
895         if (ret < 0)
896                 goto out;
897         if (ifa)
898                 ret = wl1271_acx_arp_ip_filter(wl, true,
899                                                (u8 *)&ifa->ifa_address,
900                                                ACX_IPV4_VERSION);
901         else
902                 ret = wl1271_acx_arp_ip_filter(wl, false, NULL,
903                                                ACX_IPV4_VERSION);
904         wl1271_ps_elp_sleep(wl);
905
906 out:
907         mutex_unlock(&wl->mutex);
908
909         return NOTIFY_OK;
910 }
911
912 static struct notifier_block wl1271_dev_notifier = {
913         .notifier_call = wl1271_dev_notify,
914 };
915
916
917 static int wl1271_op_start(struct ieee80211_hw *hw)
918 {
919         wl1271_debug(DEBUG_MAC80211, "mac80211 start");
920
921         /*
922          * We have to delay the booting of the hardware because
923          * we need to know the local MAC address before downloading and
924          * initializing the firmware. The MAC address cannot be changed
925          * after boot, and without the proper MAC address, the firmware
926          * will not function properly.
927          *
928          * The MAC address is first known when the corresponding interface
929          * is added. That is where we will initialize the hardware.
930          */
931
932         return 0;
933 }
934
935 static void wl1271_op_stop(struct ieee80211_hw *hw)
936 {
937         wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
938 }
939
940 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
941                                    struct ieee80211_vif *vif)
942 {
943         struct wl1271 *wl = hw->priv;
944         int retries = WL1271_BOOT_RETRIES;
945         int ret = 0;
946
947         wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
948                      vif->type, vif->addr);
949
950         mutex_lock(&wl->mutex);
951         if (wl->vif) {
952                 ret = -EBUSY;
953                 goto out;
954         }
955
956         wl->vif = vif;
957
958         switch (vif->type) {
959         case NL80211_IFTYPE_STATION:
960                 wl->bss_type = BSS_TYPE_STA_BSS;
961                 break;
962         case NL80211_IFTYPE_ADHOC:
963                 wl->bss_type = BSS_TYPE_IBSS;
964                 break;
965         default:
966                 ret = -EOPNOTSUPP;
967                 goto out;
968         }
969
970         memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
971
972         if (wl->state != WL1271_STATE_OFF) {
973                 wl1271_error("cannot start because not in off state: %d",
974                              wl->state);
975                 ret = -EBUSY;
976                 goto out;
977         }
978
979         while (retries) {
980                 retries--;
981                 ret = wl1271_chip_wakeup(wl);
982                 if (ret < 0)
983                         goto power_off;
984
985                 ret = wl1271_boot(wl);
986                 if (ret < 0)
987                         goto power_off;
988
989                 ret = wl1271_hw_init(wl);
990                 if (ret < 0)
991                         goto irq_disable;
992
993                 wl->state = WL1271_STATE_ON;
994                 wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
995                 goto out;
996
997 irq_disable:
998                 wl1271_disable_interrupts(wl);
999                 mutex_unlock(&wl->mutex);
1000                 /* Unlocking the mutex in the middle of handling is
1001                    inherently unsafe. In this case we deem it safe to do,
1002                    because we need to let any possibly pending IRQ out of
1003                    the system (and while we are WL1271_STATE_OFF the IRQ
1004                    work function will not do anything.) Also, any other
1005                    possible concurrent operations will fail due to the
1006                    current state, hence the wl1271 struct should be safe. */
1007                 cancel_work_sync(&wl->irq_work);
1008                 mutex_lock(&wl->mutex);
1009 power_off:
1010                 wl1271_power_off(wl);
1011         }
1012
1013         wl1271_error("firmware boot failed despite %d retries",
1014                      WL1271_BOOT_RETRIES);
1015 out:
1016         mutex_unlock(&wl->mutex);
1017
1018         if (!ret) {
1019                 list_add(&wl->list, &wl_list);
1020                 register_inetaddr_notifier(&wl1271_dev_notifier);
1021         }
1022
1023         return ret;
1024 }
1025
1026 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1027                                        struct ieee80211_vif *vif)
1028 {
1029         struct wl1271 *wl = hw->priv;
1030         int i;
1031
1032         unregister_inetaddr_notifier(&wl1271_dev_notifier);
1033
1034         mutex_lock(&wl->mutex);
1035         wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1036
1037         wl1271_info("down");
1038
1039         list_del(&wl->list);
1040
1041         WARN_ON(wl->state != WL1271_STATE_ON);
1042
1043         if (test_and_clear_bit(WL1271_FLAG_SCANNING, &wl->flags)) {
1044                 mutex_unlock(&wl->mutex);
1045                 ieee80211_scan_completed(wl->hw, true);
1046                 mutex_lock(&wl->mutex);
1047         }
1048
1049         wl->state = WL1271_STATE_OFF;
1050
1051         wl1271_disable_interrupts(wl);
1052
1053         mutex_unlock(&wl->mutex);
1054
1055         cancel_work_sync(&wl->irq_work);
1056         cancel_work_sync(&wl->tx_work);
1057
1058         mutex_lock(&wl->mutex);
1059
1060         /* let's notify MAC80211 about the remaining pending TX frames */
1061         wl1271_tx_flush(wl);
1062         wl1271_power_off(wl);
1063
1064         memset(wl->bssid, 0, ETH_ALEN);
1065         memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1066         wl->ssid_len = 0;
1067         wl->bss_type = MAX_BSS_TYPE;
1068         wl->band = IEEE80211_BAND_2GHZ;
1069
1070         wl->rx_counter = 0;
1071         wl->psm_entry_retry = 0;
1072         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1073         wl->tx_blocks_available = 0;
1074         wl->tx_results_count = 0;
1075         wl->tx_packets_count = 0;
1076         wl->tx_security_last_seq = 0;
1077         wl->tx_security_seq = 0;
1078         wl->time_offset = 0;
1079         wl->session_counter = 0;
1080         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1081         wl->sta_rate_set = 0;
1082         wl->flags = 0;
1083         wl->vif = NULL;
1084         wl->filters = 0;
1085
1086         for (i = 0; i < NUM_TX_QUEUES; i++)
1087                 wl->tx_blocks_freed[i] = 0;
1088
1089         wl1271_debugfs_reset(wl);
1090         mutex_unlock(&wl->mutex);
1091 }
1092
1093 static void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1094 {
1095         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1096         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1097
1098         /* combine requested filters with current filter config */
1099         filters = wl->filters | filters;
1100
1101         wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1102
1103         if (filters & FIF_PROMISC_IN_BSS) {
1104                 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1105                 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1106                 wl->rx_config |= CFG_BSSID_FILTER_EN;
1107         }
1108         if (filters & FIF_BCN_PRBRESP_PROMISC) {
1109                 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1110                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1111                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1112         }
1113         if (filters & FIF_OTHER_BSS) {
1114                 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1115                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1116         }
1117         if (filters & FIF_CONTROL) {
1118                 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1119                 wl->rx_filter |= CFG_RX_CTL_EN;
1120         }
1121         if (filters & FIF_FCSFAIL) {
1122                 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1123                 wl->rx_filter |= CFG_RX_FCS_ERROR;
1124         }
1125 }
1126
1127 static int wl1271_join_channel(struct wl1271 *wl, int channel)
1128 {
1129         int ret = 0;
1130         /* we need to use a dummy BSSID for now */
1131         static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1132                                                   0xad, 0xbe, 0xef };
1133
1134         wl->channel = channel;
1135         memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1136
1137         /* pass through frames from all BSS */
1138         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1139
1140         /* the dummy join is performed always with STATION BSS type to allow
1141            also ad-hoc mode to listen to the surroundings without sending any
1142            beacons yet. */
1143         ret = wl1271_cmd_join(wl, BSS_TYPE_STA_BSS);
1144         if (ret < 0)
1145                 goto out;
1146
1147         set_bit(WL1271_FLAG_JOINED, &wl->flags);
1148
1149 out:
1150         return ret;
1151 }
1152
1153 static int wl1271_unjoin_channel(struct wl1271 *wl)
1154 {
1155         int ret;
1156
1157         /* to stop listening to a channel, we disconnect */
1158         ret = wl1271_cmd_disconnect(wl);
1159         if (ret < 0)
1160                 goto out;
1161
1162         clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1163         wl->channel = 0;
1164         memset(wl->bssid, 0, ETH_ALEN);
1165
1166         /* stop filterting packets based on bssid */
1167         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1168
1169 out:
1170         return ret;
1171 }
1172
1173 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
1174 {
1175         struct wl1271 *wl = hw->priv;
1176         struct ieee80211_conf *conf = &hw->conf;
1177         int channel, ret = 0;
1178
1179         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1180
1181         wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s",
1182                      channel,
1183                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1184                      conf->power_level,
1185                      conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use");
1186
1187         mutex_lock(&wl->mutex);
1188
1189         wl->band = conf->channel->band;
1190
1191         ret = wl1271_ps_elp_wakeup(wl, false);
1192         if (ret < 0)
1193                 goto out;
1194
1195         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1196                 if (conf->flags & IEEE80211_CONF_IDLE &&
1197                     test_bit(WL1271_FLAG_JOINED, &wl->flags))
1198                         wl1271_unjoin_channel(wl);
1199                 else if (!(conf->flags & IEEE80211_CONF_IDLE))
1200                         wl1271_join_channel(wl, channel);
1201
1202                 if (conf->flags & IEEE80211_CONF_IDLE) {
1203                         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1204                         wl->sta_rate_set = 0;
1205                         wl1271_acx_rate_policies(wl);
1206                 }
1207         }
1208
1209         /* if the channel changes while joined, join again */
1210         if (channel != wl->channel &&
1211             test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1212                 wl->channel = channel;
1213                 /* FIXME: maybe use CMD_CHANNEL_SWITCH for this? */
1214                 ret = wl1271_cmd_join(wl, wl->bss_type);
1215                 if (ret < 0)
1216                         wl1271_warning("cmd join to update channel failed %d",
1217                                        ret);
1218         } else
1219                 wl->channel = channel;
1220
1221         if (conf->flags & IEEE80211_CONF_PS &&
1222             !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1223                 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1224
1225                 /*
1226                  * We enter PSM only if we're already associated.
1227                  * If we're not, we'll enter it when joining an SSID,
1228                  * through the bss_info_changed() hook.
1229                  */
1230                 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
1231                         wl1271_debug(DEBUG_PSM, "psm enabled");
1232                         ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1233                                                  true);
1234                 }
1235         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
1236                    test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1237                 wl1271_debug(DEBUG_PSM, "psm disabled");
1238
1239                 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1240
1241                 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
1242                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1243                                                  true);
1244         }
1245
1246         if (conf->power_level != wl->power_level) {
1247                 ret = wl1271_acx_tx_power(wl, conf->power_level);
1248                 if (ret < 0)
1249                         goto out_sleep;
1250
1251                 wl->power_level = conf->power_level;
1252         }
1253
1254 out_sleep:
1255         wl1271_ps_elp_sleep(wl);
1256
1257 out:
1258         mutex_unlock(&wl->mutex);
1259
1260         return ret;
1261 }
1262
1263 struct wl1271_filter_params {
1264         bool enabled;
1265         int mc_list_length;
1266         u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
1267 };
1268
1269 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
1270                                        struct dev_addr_list *mc_list)
1271 {
1272         struct wl1271_filter_params *fp;
1273         int i;
1274
1275         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
1276         if (!fp) {
1277                 wl1271_error("Out of memory setting filters.");
1278                 return 0;
1279         }
1280
1281         /* update multicast filtering parameters */
1282         fp->enabled = true;
1283         if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) {
1284                 mc_count = 0;
1285                 fp->enabled = false;
1286         }
1287
1288         fp->mc_list_length = 0;
1289         for (i = 0; i < mc_count; i++) {
1290                 if (mc_list->da_addrlen == ETH_ALEN) {
1291                         memcpy(fp->mc_list[fp->mc_list_length],
1292                                mc_list->da_addr, ETH_ALEN);
1293                         fp->mc_list_length++;
1294                 } else
1295                         wl1271_warning("Unknown mc address length.");
1296                 mc_list = mc_list->next;
1297         }
1298
1299         return (u64)(unsigned long)fp;
1300 }
1301
1302 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
1303                                   FIF_ALLMULTI | \
1304                                   FIF_FCSFAIL | \
1305                                   FIF_BCN_PRBRESP_PROMISC | \
1306                                   FIF_CONTROL | \
1307                                   FIF_OTHER_BSS)
1308
1309 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
1310                                        unsigned int changed,
1311                                        unsigned int *total, u64 multicast)
1312 {
1313         struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
1314         struct wl1271 *wl = hw->priv;
1315         int ret;
1316
1317         wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
1318
1319         mutex_lock(&wl->mutex);
1320
1321         if (wl->state == WL1271_STATE_OFF)
1322                 goto out;
1323
1324         ret = wl1271_ps_elp_wakeup(wl, false);
1325         if (ret < 0)
1326                 goto out;
1327
1328         *total &= WL1271_SUPPORTED_FILTERS;
1329         changed &= WL1271_SUPPORTED_FILTERS;
1330
1331         if (*total & FIF_ALLMULTI)
1332                 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
1333         else if (fp)
1334                 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
1335                                                    fp->mc_list,
1336                                                    fp->mc_list_length);
1337         if (ret < 0)
1338                 goto out_sleep;
1339
1340         /* determine, whether supported filter values have changed */
1341         if (changed == 0)
1342                 goto out_sleep;
1343
1344         /* configure filters */
1345         wl->filters = *total;
1346         wl1271_configure_filters(wl, 0);
1347
1348         /* apply configured filters */
1349         ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
1350         if (ret < 0)
1351                 goto out_sleep;
1352
1353 out_sleep:
1354         wl1271_ps_elp_sleep(wl);
1355
1356 out:
1357         mutex_unlock(&wl->mutex);
1358         kfree(fp);
1359 }
1360
1361 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1362                              struct ieee80211_vif *vif,
1363                              struct ieee80211_sta *sta,
1364                              struct ieee80211_key_conf *key_conf)
1365 {
1366         struct wl1271 *wl = hw->priv;
1367         const u8 *addr;
1368         int ret;
1369         u32 tx_seq_32 = 0;
1370         u16 tx_seq_16 = 0;
1371         u8 key_type;
1372
1373         static const u8 bcast_addr[ETH_ALEN] =
1374                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1375
1376         wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
1377
1378         addr = sta ? sta->addr : bcast_addr;
1379
1380         wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
1381         wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
1382         wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
1383                      key_conf->alg, key_conf->keyidx,
1384                      key_conf->keylen, key_conf->flags);
1385         wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
1386
1387         if (is_zero_ether_addr(addr)) {
1388                 /* We dont support TX only encryption */
1389                 ret = -EOPNOTSUPP;
1390                 goto out;
1391         }
1392
1393         mutex_lock(&wl->mutex);
1394
1395         ret = wl1271_ps_elp_wakeup(wl, false);
1396         if (ret < 0)
1397                 goto out_unlock;
1398
1399         switch (key_conf->alg) {
1400         case ALG_WEP:
1401                 key_type = KEY_WEP;
1402
1403                 key_conf->hw_key_idx = key_conf->keyidx;
1404                 break;
1405         case ALG_TKIP:
1406                 key_type = KEY_TKIP;
1407
1408                 key_conf->hw_key_idx = key_conf->keyidx;
1409                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1410                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1411                 break;
1412         case ALG_CCMP:
1413                 key_type = KEY_AES;
1414
1415                 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1416                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1417                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1418                 break;
1419         default:
1420                 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
1421
1422                 ret = -EOPNOTSUPP;
1423                 goto out_sleep;
1424         }
1425
1426         switch (cmd) {
1427         case SET_KEY:
1428                 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
1429                                          key_conf->keyidx, key_type,
1430                                          key_conf->keylen, key_conf->key,
1431                                          addr, tx_seq_32, tx_seq_16);
1432                 if (ret < 0) {
1433                         wl1271_error("Could not add or replace key");
1434                         goto out_sleep;
1435                 }
1436
1437                 /* the default WEP key needs to be configured at least once */
1438                 if (key_type == KEY_WEP) {
1439                         ret = wl1271_cmd_set_default_wep_key(wl,
1440                                                              wl->default_key);
1441                         if (ret < 0)
1442                                 goto out_sleep;
1443                 }
1444                 break;
1445
1446         case DISABLE_KEY:
1447                 /* The wl1271 does not allow to remove unicast keys - they
1448                    will be cleared automatically on next CMD_JOIN. Ignore the
1449                    request silently, as we dont want the mac80211 to emit
1450                    an error message. */
1451                 if (!is_broadcast_ether_addr(addr))
1452                         break;
1453
1454                 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
1455                                          key_conf->keyidx, key_type,
1456                                          key_conf->keylen, key_conf->key,
1457                                          addr, 0, 0);
1458                 if (ret < 0) {
1459                         wl1271_error("Could not remove key");
1460                         goto out_sleep;
1461                 }
1462                 break;
1463
1464         default:
1465                 wl1271_error("Unsupported key cmd 0x%x", cmd);
1466                 ret = -EOPNOTSUPP;
1467                 goto out_sleep;
1468
1469                 break;
1470         }
1471
1472 out_sleep:
1473         wl1271_ps_elp_sleep(wl);
1474
1475 out_unlock:
1476         mutex_unlock(&wl->mutex);
1477
1478 out:
1479         return ret;
1480 }
1481
1482 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1483                              struct cfg80211_scan_request *req)
1484 {
1485         struct wl1271 *wl = hw->priv;
1486         int ret;
1487         u8 *ssid = NULL;
1488         size_t len = 0;
1489
1490         wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1491
1492         if (req->n_ssids) {
1493                 ssid = req->ssids[0].ssid;
1494                 len = req->ssids[0].ssid_len;
1495         }
1496
1497         mutex_lock(&wl->mutex);
1498
1499         ret = wl1271_ps_elp_wakeup(wl, false);
1500         if (ret < 0)
1501                 goto out;
1502
1503         if (wl1271_11a_enabled())
1504                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1505                                       req->ie, req->ie_len, 1, 0,
1506                                       WL1271_SCAN_BAND_DUAL, 3);
1507         else
1508                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1509                                       req->ie, req->ie_len, 1, 0,
1510                                       WL1271_SCAN_BAND_2_4_GHZ, 3);
1511
1512         wl1271_ps_elp_sleep(wl);
1513
1514 out:
1515         mutex_unlock(&wl->mutex);
1516
1517         return ret;
1518 }
1519
1520 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1521 {
1522         struct wl1271 *wl = hw->priv;
1523         int ret;
1524
1525         mutex_lock(&wl->mutex);
1526
1527         ret = wl1271_ps_elp_wakeup(wl, false);
1528         if (ret < 0)
1529                 goto out;
1530
1531         ret = wl1271_acx_rts_threshold(wl, (u16) value);
1532         if (ret < 0)
1533                 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1534
1535         wl1271_ps_elp_sleep(wl);
1536
1537 out:
1538         mutex_unlock(&wl->mutex);
1539
1540         return ret;
1541 }
1542
1543 static void wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *beacon)
1544 {
1545         u8 *ptr = beacon->data +
1546                 offsetof(struct ieee80211_mgmt, u.beacon.variable);
1547
1548         /* find the location of the ssid in the beacon */
1549         while (ptr < beacon->data + beacon->len) {
1550                 if (ptr[0] == WLAN_EID_SSID) {
1551                         wl->ssid_len = ptr[1];
1552                         memcpy(wl->ssid, ptr+2, wl->ssid_len);
1553                         return;
1554                 }
1555                 ptr += ptr[1];
1556         }
1557         wl1271_error("ad-hoc beacon template has no SSID!\n");
1558 }
1559
1560 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1561                                        struct ieee80211_vif *vif,
1562                                        struct ieee80211_bss_conf *bss_conf,
1563                                        u32 changed)
1564 {
1565         enum wl1271_cmd_ps_mode mode;
1566         struct wl1271 *wl = hw->priv;
1567         bool do_join = false;
1568         int ret;
1569
1570         wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1571
1572         mutex_lock(&wl->mutex);
1573
1574         ret = wl1271_ps_elp_wakeup(wl, false);
1575         if (ret < 0)
1576                 goto out;
1577
1578         if (wl->bss_type == BSS_TYPE_IBSS) {
1579                 /* FIXME: This implements rudimentary ad-hoc support -
1580                    proper templates are on the wish list and notification
1581                    on when they change. This patch will update the templates
1582                    on every call to this function. */
1583                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
1584
1585                 if (beacon) {
1586                         struct ieee80211_hdr *hdr;
1587
1588                         wl1271_ssid_set(wl, beacon);
1589                         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
1590                                                       beacon->data,
1591                                                       beacon->len);
1592
1593                         if (ret < 0) {
1594                                 dev_kfree_skb(beacon);
1595                                 goto out_sleep;
1596                         }
1597
1598                         hdr = (struct ieee80211_hdr *) beacon->data;
1599                         hdr->frame_control = cpu_to_le16(
1600                                 IEEE80211_FTYPE_MGMT |
1601                                 IEEE80211_STYPE_PROBE_RESP);
1602
1603                         ret = wl1271_cmd_template_set(wl,
1604                                                       CMD_TEMPL_PROBE_RESPONSE,
1605                                                       beacon->data,
1606                                                       beacon->len);
1607                         dev_kfree_skb(beacon);
1608                         if (ret < 0)
1609                                 goto out_sleep;
1610
1611                         /* Need to update the SSID (for filtering etc) */
1612                         do_join = true;
1613                 }
1614         }
1615
1616         if ((changed & BSS_CHANGED_BSSID) &&
1617             /*
1618              * Now we know the correct bssid, so we send a new join command
1619              * and enable the BSSID filter
1620              */
1621             memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
1622                         memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1623
1624                         ret = wl1271_cmd_build_null_data(wl);
1625                         if (ret < 0)
1626                                 goto out_sleep;
1627
1628                         /* filter out all packets not from this BSSID */
1629                         wl1271_configure_filters(wl, 0);
1630
1631                         /* Need to update the BSSID (for filtering etc) */
1632                         do_join = true;
1633         }
1634
1635         if (changed & BSS_CHANGED_ASSOC) {
1636                 if (bss_conf->assoc) {
1637                         wl->aid = bss_conf->aid;
1638                         set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1639
1640                         /*
1641                          * with wl1271, we don't need to update the
1642                          * beacon_int and dtim_period, because the firmware
1643                          * updates it by itself when the first beacon is
1644                          * received after a join.
1645                          */
1646                         ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1647                         if (ret < 0)
1648                                 goto out_sleep;
1649
1650                         ret = wl1271_acx_aid(wl, wl->aid);
1651                         if (ret < 0)
1652                                 goto out_sleep;
1653
1654                         /* If we want to go in PSM but we're not there yet */
1655                         if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
1656                             !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1657                                 mode = STATION_POWER_SAVE_MODE;
1658                                 ret = wl1271_ps_set_mode(wl, mode, true);
1659                                 if (ret < 0)
1660                                         goto out_sleep;
1661                         }
1662                 } else {
1663                         /* use defaults when not associated */
1664                         clear_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1665                         wl->aid = 0;
1666                 }
1667
1668         }
1669
1670         if (changed & BSS_CHANGED_ERP_SLOT) {
1671                 if (bss_conf->use_short_slot)
1672                         ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1673                 else
1674                         ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1675                 if (ret < 0) {
1676                         wl1271_warning("Set slot time failed %d", ret);
1677                         goto out_sleep;
1678                 }
1679         }
1680
1681         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1682                 if (bss_conf->use_short_preamble)
1683                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1684                 else
1685                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1686         }
1687
1688         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1689                 if (bss_conf->use_cts_prot)
1690                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1691                 else
1692                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1693                 if (ret < 0) {
1694                         wl1271_warning("Set ctsprotect failed %d", ret);
1695                         goto out_sleep;
1696                 }
1697         }
1698
1699         if (do_join) {
1700                 ret = wl1271_cmd_join(wl, wl->bss_type);
1701                 if (ret < 0) {
1702                         wl1271_warning("cmd join failed %d", ret);
1703                         goto out_sleep;
1704                 }
1705                 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1706         }
1707
1708 out_sleep:
1709         wl1271_ps_elp_sleep(wl);
1710
1711 out:
1712         mutex_unlock(&wl->mutex);
1713 }
1714
1715 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1716                              const struct ieee80211_tx_queue_params *params)
1717 {
1718         struct wl1271 *wl = hw->priv;
1719         u8 ps_scheme;
1720         int ret;
1721
1722         mutex_lock(&wl->mutex);
1723
1724         wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1725
1726         ret = wl1271_ps_elp_wakeup(wl, false);
1727         if (ret < 0)
1728                 goto out;
1729
1730         /* the txop is confed in units of 32us by the mac80211, we need us */
1731         ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
1732                                 params->cw_min, params->cw_max,
1733                                 params->aifs, params->txop << 5);
1734         if (ret < 0)
1735                 goto out_sleep;
1736
1737         if (params->uapsd)
1738                 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
1739         else
1740                 ps_scheme = CONF_PS_SCHEME_LEGACY;
1741
1742         ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
1743                                  CONF_CHANNEL_TYPE_EDCF,
1744                                  wl1271_tx_get_queue(queue),
1745                                  ps_scheme, CONF_ACK_POLICY_LEGACY, 0, 0);
1746         if (ret < 0)
1747                 goto out_sleep;
1748
1749 out_sleep:
1750         wl1271_ps_elp_sleep(wl);
1751
1752 out:
1753         mutex_unlock(&wl->mutex);
1754
1755         return ret;
1756 }
1757
1758
1759 /* can't be const, mac80211 writes to this */
1760 static struct ieee80211_rate wl1271_rates[] = {
1761         { .bitrate = 10,
1762           .hw_value = CONF_HW_BIT_RATE_1MBPS,
1763           .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
1764         { .bitrate = 20,
1765           .hw_value = CONF_HW_BIT_RATE_2MBPS,
1766           .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
1767           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1768         { .bitrate = 55,
1769           .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
1770           .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
1771           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1772         { .bitrate = 110,
1773           .hw_value = CONF_HW_BIT_RATE_11MBPS,
1774           .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
1775           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1776         { .bitrate = 60,
1777           .hw_value = CONF_HW_BIT_RATE_6MBPS,
1778           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
1779         { .bitrate = 90,
1780           .hw_value = CONF_HW_BIT_RATE_9MBPS,
1781           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
1782         { .bitrate = 120,
1783           .hw_value = CONF_HW_BIT_RATE_12MBPS,
1784           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
1785         { .bitrate = 180,
1786           .hw_value = CONF_HW_BIT_RATE_18MBPS,
1787           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
1788         { .bitrate = 240,
1789           .hw_value = CONF_HW_BIT_RATE_24MBPS,
1790           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
1791         { .bitrate = 360,
1792          .hw_value = CONF_HW_BIT_RATE_36MBPS,
1793          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
1794         { .bitrate = 480,
1795           .hw_value = CONF_HW_BIT_RATE_48MBPS,
1796           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
1797         { .bitrate = 540,
1798           .hw_value = CONF_HW_BIT_RATE_54MBPS,
1799           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
1800 };
1801
1802 /* can't be const, mac80211 writes to this */
1803 static struct ieee80211_channel wl1271_channels[] = {
1804         { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
1805         { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
1806         { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
1807         { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
1808         { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
1809         { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
1810         { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
1811         { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
1812         { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
1813         { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
1814         { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
1815         { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
1816         { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
1817 };
1818
1819 /* can't be const, mac80211 writes to this */
1820 static struct ieee80211_supported_band wl1271_band_2ghz = {
1821         .channels = wl1271_channels,
1822         .n_channels = ARRAY_SIZE(wl1271_channels),
1823         .bitrates = wl1271_rates,
1824         .n_bitrates = ARRAY_SIZE(wl1271_rates),
1825 };
1826
1827 /* 5 GHz data rates for WL1273 */
1828 static struct ieee80211_rate wl1271_rates_5ghz[] = {
1829         { .bitrate = 60,
1830           .hw_value = CONF_HW_BIT_RATE_6MBPS,
1831           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
1832         { .bitrate = 90,
1833           .hw_value = CONF_HW_BIT_RATE_9MBPS,
1834           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
1835         { .bitrate = 120,
1836           .hw_value = CONF_HW_BIT_RATE_12MBPS,
1837           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
1838         { .bitrate = 180,
1839           .hw_value = CONF_HW_BIT_RATE_18MBPS,
1840           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
1841         { .bitrate = 240,
1842           .hw_value = CONF_HW_BIT_RATE_24MBPS,
1843           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
1844         { .bitrate = 360,
1845          .hw_value = CONF_HW_BIT_RATE_36MBPS,
1846          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
1847         { .bitrate = 480,
1848           .hw_value = CONF_HW_BIT_RATE_48MBPS,
1849           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
1850         { .bitrate = 540,
1851           .hw_value = CONF_HW_BIT_RATE_54MBPS,
1852           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
1853 };
1854
1855 /* 5 GHz band channels for WL1273 */
1856 static struct ieee80211_channel wl1271_channels_5ghz[] = {
1857         { .hw_value = 183, .center_freq = 4915},
1858         { .hw_value = 184, .center_freq = 4920},
1859         { .hw_value = 185, .center_freq = 4925},
1860         { .hw_value = 187, .center_freq = 4935},
1861         { .hw_value = 188, .center_freq = 4940},
1862         { .hw_value = 189, .center_freq = 4945},
1863         { .hw_value = 192, .center_freq = 4960},
1864         { .hw_value = 196, .center_freq = 4980},
1865         { .hw_value = 7, .center_freq = 5035},
1866         { .hw_value = 8, .center_freq = 5040},
1867         { .hw_value = 9, .center_freq = 5045},
1868         { .hw_value = 11, .center_freq = 5055},
1869         { .hw_value = 12, .center_freq = 5060},
1870         { .hw_value = 16, .center_freq = 5080},
1871         { .hw_value = 34, .center_freq = 5170},
1872         { .hw_value = 36, .center_freq = 5180},
1873         { .hw_value = 38, .center_freq = 5190},
1874         { .hw_value = 40, .center_freq = 5200},
1875         { .hw_value = 42, .center_freq = 5210},
1876         { .hw_value = 44, .center_freq = 5220},
1877         { .hw_value = 46, .center_freq = 5230},
1878         { .hw_value = 48, .center_freq = 5240},
1879         { .hw_value = 52, .center_freq = 5260},
1880         { .hw_value = 56, .center_freq = 5280},
1881         { .hw_value = 60, .center_freq = 5300},
1882         { .hw_value = 64, .center_freq = 5320},
1883         { .hw_value = 100, .center_freq = 5500},
1884         { .hw_value = 104, .center_freq = 5520},
1885         { .hw_value = 108, .center_freq = 5540},
1886         { .hw_value = 112, .center_freq = 5560},
1887         { .hw_value = 116, .center_freq = 5580},
1888         { .hw_value = 120, .center_freq = 5600},
1889         { .hw_value = 124, .center_freq = 5620},
1890         { .hw_value = 128, .center_freq = 5640},
1891         { .hw_value = 132, .center_freq = 5660},
1892         { .hw_value = 136, .center_freq = 5680},
1893         { .hw_value = 140, .center_freq = 5700},
1894         { .hw_value = 149, .center_freq = 5745},
1895         { .hw_value = 153, .center_freq = 5765},
1896         { .hw_value = 157, .center_freq = 5785},
1897         { .hw_value = 161, .center_freq = 5805},
1898         { .hw_value = 165, .center_freq = 5825},
1899 };
1900
1901
1902 static struct ieee80211_supported_band wl1271_band_5ghz = {
1903         .channels = wl1271_channels_5ghz,
1904         .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
1905         .bitrates = wl1271_rates_5ghz,
1906         .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
1907 };
1908
1909 static const struct ieee80211_ops wl1271_ops = {
1910         .start = wl1271_op_start,
1911         .stop = wl1271_op_stop,
1912         .add_interface = wl1271_op_add_interface,
1913         .remove_interface = wl1271_op_remove_interface,
1914         .config = wl1271_op_config,
1915         .prepare_multicast = wl1271_op_prepare_multicast,
1916         .configure_filter = wl1271_op_configure_filter,
1917         .tx = wl1271_op_tx,
1918         .set_key = wl1271_op_set_key,
1919         .hw_scan = wl1271_op_hw_scan,
1920         .bss_info_changed = wl1271_op_bss_info_changed,
1921         .set_rts_threshold = wl1271_op_set_rts_threshold,
1922         .conf_tx = wl1271_op_conf_tx,
1923         CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
1924 };
1925
1926 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
1927                                                struct device_attribute *attr,
1928                                                char *buf)
1929 {
1930         struct wl1271 *wl = dev_get_drvdata(dev);
1931         ssize_t len;
1932
1933         /* FIXME: what's the maximum length of buf? page size?*/
1934         len = 500;
1935
1936         mutex_lock(&wl->mutex);
1937         len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
1938                        wl->sg_enabled);
1939         mutex_unlock(&wl->mutex);
1940
1941         return len;
1942
1943 }
1944
1945 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
1946                                                 struct device_attribute *attr,
1947                                                 const char *buf, size_t count)
1948 {
1949         struct wl1271 *wl = dev_get_drvdata(dev);
1950         unsigned long res;
1951         int ret;
1952
1953         ret = strict_strtoul(buf, 10, &res);
1954
1955         if (ret < 0) {
1956                 wl1271_warning("incorrect value written to bt_coex_mode");
1957                 return count;
1958         }
1959
1960         mutex_lock(&wl->mutex);
1961
1962         res = !!res;
1963
1964         if (res == wl->sg_enabled)
1965                 goto out;
1966
1967         wl->sg_enabled = res;
1968
1969         if (wl->state == WL1271_STATE_OFF)
1970                 goto out;
1971
1972         ret = wl1271_ps_elp_wakeup(wl, false);
1973         if (ret < 0)
1974                 goto out;
1975
1976         wl1271_acx_sg_enable(wl, wl->sg_enabled);
1977         wl1271_ps_elp_sleep(wl);
1978
1979  out:
1980         mutex_unlock(&wl->mutex);
1981         return count;
1982 }
1983
1984 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
1985                    wl1271_sysfs_show_bt_coex_state,
1986                    wl1271_sysfs_store_bt_coex_state);
1987
1988 int wl1271_register_hw(struct wl1271 *wl)
1989 {
1990         int ret;
1991
1992         if (wl->mac80211_registered)
1993                 return 0;
1994
1995         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1996
1997         ret = ieee80211_register_hw(wl->hw);
1998         if (ret < 0) {
1999                 wl1271_error("unable to register mac80211 hw: %d", ret);
2000                 return ret;
2001         }
2002
2003         wl->mac80211_registered = true;
2004
2005         wl1271_notice("loaded");
2006
2007         return 0;
2008 }
2009 EXPORT_SYMBOL_GPL(wl1271_register_hw);
2010
2011 int wl1271_init_ieee80211(struct wl1271 *wl)
2012 {
2013         /* The tx descriptor buffer and the TKIP space. */
2014         wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
2015                 sizeof(struct wl1271_tx_hw_descr);
2016
2017         /* unit us */
2018         /* FIXME: find a proper value */
2019         wl->hw->channel_change_time = 10000;
2020
2021         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
2022                 IEEE80211_HW_NOISE_DBM |
2023                 IEEE80211_HW_BEACON_FILTER |
2024                 IEEE80211_HW_SUPPORTS_PS |
2025                 IEEE80211_HW_SUPPORTS_UAPSD |
2026                 IEEE80211_HW_HAS_RATE_CONTROL;
2027
2028         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2029                 BIT(NL80211_IFTYPE_ADHOC);
2030         wl->hw->wiphy->max_scan_ssids = 1;
2031         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
2032
2033         if (wl1271_11a_enabled())
2034                 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wl1271_band_5ghz;
2035
2036         wl->hw->queues = 4;
2037
2038         SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
2039
2040         return 0;
2041 }
2042 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
2043
2044 #define WL1271_DEFAULT_CHANNEL 0
2045
2046 struct ieee80211_hw *wl1271_alloc_hw(void)
2047 {
2048         struct ieee80211_hw *hw;
2049         struct wl1271 *wl;
2050         int i, ret;
2051         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
2052
2053         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
2054         if (!hw) {
2055                 wl1271_error("could not alloc ieee80211_hw");
2056                 ret = -ENOMEM;
2057                 goto err;
2058         }
2059
2060         wl = hw->priv;
2061         memset(wl, 0, sizeof(*wl));
2062
2063         INIT_LIST_HEAD(&wl->list);
2064
2065         wl->hw = hw;
2066
2067         skb_queue_head_init(&wl->tx_queue);
2068
2069         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
2070         wl->channel = WL1271_DEFAULT_CHANNEL;
2071         wl->default_key = 0;
2072         wl->rx_counter = 0;
2073         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
2074         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
2075         wl->psm_entry_retry = 0;
2076         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
2077         wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
2078         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
2079         wl->sta_rate_set = 0;
2080         wl->band = IEEE80211_BAND_2GHZ;
2081         wl->vif = NULL;
2082         wl->flags = 0;
2083         wl->sg_enabled = true;
2084
2085         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
2086                 wl->tx_frames[i] = NULL;
2087
2088         spin_lock_init(&wl->wl_lock);
2089
2090         wl->state = WL1271_STATE_OFF;
2091         mutex_init(&wl->mutex);
2092
2093         /*
2094          * FIXME: we should use a zero MAC address here, but for now we
2095          * generate a random Nokia address.
2096          */
2097         memcpy(wl->mac_addr, nokia_oui, 3);
2098         get_random_bytes(wl->mac_addr + 3, 3);
2099
2100         /* Apply default driver configuration. */
2101         wl1271_conf_init(wl);
2102
2103         wl1271_debugfs_init(wl);
2104
2105         /* Register platform device */
2106         ret = platform_device_register(&wl1271_device);
2107         if (ret) {
2108                 wl1271_error("couldn't register platform device");
2109                 goto err_hw;
2110         }
2111         dev_set_drvdata(&wl1271_device.dev, wl);
2112
2113         /* Create sysfs file to control bt coex state */
2114         ret = device_create_file(&wl1271_device.dev, &dev_attr_bt_coex_state);
2115         if (ret < 0) {
2116                 wl1271_error("failed to create sysfs file bt_coex_state");
2117                 goto err_platform;
2118         }
2119
2120         return hw;
2121
2122 err_platform:
2123         platform_device_unregister(&wl1271_device);
2124
2125 err_hw:
2126         ieee80211_unregister_hw(wl->hw);
2127
2128 err:
2129         return ERR_PTR(ret);
2130 }
2131 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
2132
2133 int wl1271_free_hw(struct wl1271 *wl)
2134 {
2135         platform_device_unregister(&wl1271_device);
2136         ieee80211_unregister_hw(wl->hw);
2137
2138         wl1271_debugfs_exit(wl);
2139
2140         kfree(wl->target_mem_map);
2141         vfree(wl->fw);
2142         wl->fw = NULL;
2143         kfree(wl->nvs);
2144         wl->nvs = NULL;
2145
2146         kfree(wl->fw_status);
2147         kfree(wl->tx_res_if);
2148
2149         ieee80211_free_hw(wl->hw);
2150
2151         return 0;
2152 }
2153 EXPORT_SYMBOL_GPL(wl1271_free_hw);
2154
2155 MODULE_LICENSE("GPL");
2156 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
2157 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");