wl1271: Fix ad-hoc mode handling
[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, false);
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                 wl->set_bss_type = BSS_TYPE_STA_BSS;
962                 break;
963         case NL80211_IFTYPE_ADHOC:
964                 wl->bss_type = BSS_TYPE_IBSS;
965                 wl->set_bss_type = BSS_TYPE_STA_BSS;
966                 break;
967         default:
968                 ret = -EOPNOTSUPP;
969                 goto out;
970         }
971
972         memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
973
974         if (wl->state != WL1271_STATE_OFF) {
975                 wl1271_error("cannot start because not in off state: %d",
976                              wl->state);
977                 ret = -EBUSY;
978                 goto out;
979         }
980
981         while (retries) {
982                 retries--;
983                 ret = wl1271_chip_wakeup(wl);
984                 if (ret < 0)
985                         goto power_off;
986
987                 ret = wl1271_boot(wl);
988                 if (ret < 0)
989                         goto power_off;
990
991                 ret = wl1271_hw_init(wl);
992                 if (ret < 0)
993                         goto irq_disable;
994
995                 wl->state = WL1271_STATE_ON;
996                 wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
997                 goto out;
998
999 irq_disable:
1000                 wl1271_disable_interrupts(wl);
1001                 mutex_unlock(&wl->mutex);
1002                 /* Unlocking the mutex in the middle of handling is
1003                    inherently unsafe. In this case we deem it safe to do,
1004                    because we need to let any possibly pending IRQ out of
1005                    the system (and while we are WL1271_STATE_OFF the IRQ
1006                    work function will not do anything.) Also, any other
1007                    possible concurrent operations will fail due to the
1008                    current state, hence the wl1271 struct should be safe. */
1009                 cancel_work_sync(&wl->irq_work);
1010                 mutex_lock(&wl->mutex);
1011 power_off:
1012                 wl1271_power_off(wl);
1013         }
1014
1015         wl1271_error("firmware boot failed despite %d retries",
1016                      WL1271_BOOT_RETRIES);
1017 out:
1018         mutex_unlock(&wl->mutex);
1019
1020         if (!ret) {
1021                 list_add(&wl->list, &wl_list);
1022                 register_inetaddr_notifier(&wl1271_dev_notifier);
1023         }
1024
1025         return ret;
1026 }
1027
1028 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1029                                        struct ieee80211_vif *vif)
1030 {
1031         struct wl1271 *wl = hw->priv;
1032         int i;
1033
1034         unregister_inetaddr_notifier(&wl1271_dev_notifier);
1035
1036         mutex_lock(&wl->mutex);
1037         wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1038
1039         wl1271_info("down");
1040
1041         list_del(&wl->list);
1042
1043         WARN_ON(wl->state != WL1271_STATE_ON);
1044
1045         if (test_and_clear_bit(WL1271_FLAG_SCANNING, &wl->flags)) {
1046                 mutex_unlock(&wl->mutex);
1047                 ieee80211_scan_completed(wl->hw, true);
1048                 mutex_lock(&wl->mutex);
1049         }
1050
1051         wl->state = WL1271_STATE_OFF;
1052
1053         wl1271_disable_interrupts(wl);
1054
1055         mutex_unlock(&wl->mutex);
1056
1057         cancel_work_sync(&wl->irq_work);
1058         cancel_work_sync(&wl->tx_work);
1059
1060         mutex_lock(&wl->mutex);
1061
1062         /* let's notify MAC80211 about the remaining pending TX frames */
1063         wl1271_tx_flush(wl);
1064         wl1271_power_off(wl);
1065
1066         memset(wl->bssid, 0, ETH_ALEN);
1067         memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1068         wl->ssid_len = 0;
1069         wl->bss_type = MAX_BSS_TYPE;
1070         wl->set_bss_type = MAX_BSS_TYPE;
1071         wl->band = IEEE80211_BAND_2GHZ;
1072
1073         wl->rx_counter = 0;
1074         wl->psm_entry_retry = 0;
1075         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1076         wl->tx_blocks_available = 0;
1077         wl->tx_results_count = 0;
1078         wl->tx_packets_count = 0;
1079         wl->tx_security_last_seq = 0;
1080         wl->tx_security_seq = 0;
1081         wl->time_offset = 0;
1082         wl->session_counter = 0;
1083         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1084         wl->sta_rate_set = 0;
1085         wl->flags = 0;
1086         wl->vif = NULL;
1087         wl->filters = 0;
1088
1089         for (i = 0; i < NUM_TX_QUEUES; i++)
1090                 wl->tx_blocks_freed[i] = 0;
1091
1092         wl1271_debugfs_reset(wl);
1093         mutex_unlock(&wl->mutex);
1094 }
1095
1096 static void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1097 {
1098         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1099         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1100
1101         /* combine requested filters with current filter config */
1102         filters = wl->filters | filters;
1103
1104         wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1105
1106         if (filters & FIF_PROMISC_IN_BSS) {
1107                 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1108                 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1109                 wl->rx_config |= CFG_BSSID_FILTER_EN;
1110         }
1111         if (filters & FIF_BCN_PRBRESP_PROMISC) {
1112                 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1113                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1114                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1115         }
1116         if (filters & FIF_OTHER_BSS) {
1117                 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1118                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1119         }
1120         if (filters & FIF_CONTROL) {
1121                 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1122                 wl->rx_filter |= CFG_RX_CTL_EN;
1123         }
1124         if (filters & FIF_FCSFAIL) {
1125                 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1126                 wl->rx_filter |= CFG_RX_FCS_ERROR;
1127         }
1128 }
1129
1130 static int wl1271_join_channel(struct wl1271 *wl, int channel)
1131 {
1132         int ret = 0;
1133         /* we need to use a dummy BSSID for now */
1134         static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1135                                                   0xad, 0xbe, 0xef };
1136
1137         wl->channel = channel;
1138         memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1139
1140         /* pass through frames from all BSS */
1141         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1142
1143         ret = wl1271_cmd_join(wl, wl->set_bss_type);
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->set_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 ((changed && BSS_CHANGED_BEACON) &&
1579             (wl->bss_type == BSS_TYPE_IBSS)) {
1580                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
1581
1582                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beacon updated");
1583
1584                 if (beacon) {
1585                         struct ieee80211_hdr *hdr;
1586
1587                         wl1271_ssid_set(wl, beacon);
1588                         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
1589                                                       beacon->data,
1590                                                       beacon->len);
1591
1592                         if (ret < 0) {
1593                                 dev_kfree_skb(beacon);
1594                                 goto out_sleep;
1595                         }
1596
1597                         hdr = (struct ieee80211_hdr *) beacon->data;
1598                         hdr->frame_control = cpu_to_le16(
1599                                 IEEE80211_FTYPE_MGMT |
1600                                 IEEE80211_STYPE_PROBE_RESP);
1601
1602                         ret = wl1271_cmd_template_set(wl,
1603                                                       CMD_TEMPL_PROBE_RESPONSE,
1604                                                       beacon->data,
1605                                                       beacon->len);
1606                         dev_kfree_skb(beacon);
1607                         if (ret < 0)
1608                                 goto out_sleep;
1609
1610                         /* Need to update the SSID (for filtering etc) */
1611                         do_join = true;
1612                 }
1613         }
1614
1615         if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
1616             (wl->bss_type == BSS_TYPE_IBSS)) {
1617                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
1618                              bss_conf->enable_beacon ? "enabled" : "disabled");
1619
1620                 if (bss_conf->enable_beacon)
1621                         wl->set_bss_type = BSS_TYPE_IBSS;
1622                 else
1623                         wl->set_bss_type = BSS_TYPE_STA_BSS;
1624                 do_join = true;
1625         }
1626
1627         if ((changed & BSS_CHANGED_BSSID) &&
1628             /*
1629              * Now we know the correct bssid, so we send a new join command
1630              * and enable the BSSID filter
1631              */
1632             memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
1633                         memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1634
1635                         ret = wl1271_cmd_build_null_data(wl);
1636                         if (ret < 0)
1637                                 goto out_sleep;
1638
1639                         /* filter out all packets not from this BSSID */
1640                         wl1271_configure_filters(wl, 0);
1641
1642                         /* Need to update the BSSID (for filtering etc) */
1643                         do_join = true;
1644         }
1645
1646         if (changed & BSS_CHANGED_ASSOC) {
1647                 if (bss_conf->assoc) {
1648                         wl->aid = bss_conf->aid;
1649                         set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1650
1651                         /*
1652                          * with wl1271, we don't need to update the
1653                          * beacon_int and dtim_period, because the firmware
1654                          * updates it by itself when the first beacon is
1655                          * received after a join.
1656                          */
1657                         ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1658                         if (ret < 0)
1659                                 goto out_sleep;
1660
1661                         ret = wl1271_acx_aid(wl, wl->aid);
1662                         if (ret < 0)
1663                                 goto out_sleep;
1664
1665                         /* enable the connection monitoring feature */
1666                         ret = wl1271_acx_conn_monit_params(wl, true);
1667                         if (ret < 0)
1668                                 goto out_sleep;
1669
1670                         /* If we want to go in PSM but we're not there yet */
1671                         if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
1672                             !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1673                                 mode = STATION_POWER_SAVE_MODE;
1674                                 ret = wl1271_ps_set_mode(wl, mode, true);
1675                                 if (ret < 0)
1676                                         goto out_sleep;
1677                         }
1678                 } else {
1679                         /* use defaults when not associated */
1680                         clear_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1681                         wl->aid = 0;
1682
1683                         /* disable connection monitor features */
1684                         ret = wl1271_acx_conn_monit_params(wl, false);
1685                         if (ret < 0)
1686                                 goto out_sleep;
1687                 }
1688
1689         }
1690
1691         if (changed & BSS_CHANGED_ERP_SLOT) {
1692                 if (bss_conf->use_short_slot)
1693                         ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1694                 else
1695                         ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1696                 if (ret < 0) {
1697                         wl1271_warning("Set slot time failed %d", ret);
1698                         goto out_sleep;
1699                 }
1700         }
1701
1702         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1703                 if (bss_conf->use_short_preamble)
1704                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1705                 else
1706                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1707         }
1708
1709         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1710                 if (bss_conf->use_cts_prot)
1711                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1712                 else
1713                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1714                 if (ret < 0) {
1715                         wl1271_warning("Set ctsprotect failed %d", ret);
1716                         goto out_sleep;
1717                 }
1718         }
1719
1720         if (do_join) {
1721                 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1722                 if (ret < 0) {
1723                         wl1271_warning("cmd join failed %d", ret);
1724                         goto out_sleep;
1725                 }
1726                 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1727         }
1728
1729 out_sleep:
1730         wl1271_ps_elp_sleep(wl);
1731
1732 out:
1733         mutex_unlock(&wl->mutex);
1734 }
1735
1736 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1737                              const struct ieee80211_tx_queue_params *params)
1738 {
1739         struct wl1271 *wl = hw->priv;
1740         u8 ps_scheme;
1741         int ret;
1742
1743         mutex_lock(&wl->mutex);
1744
1745         wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1746
1747         ret = wl1271_ps_elp_wakeup(wl, false);
1748         if (ret < 0)
1749                 goto out;
1750
1751         /* the txop is confed in units of 32us by the mac80211, we need us */
1752         ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
1753                                 params->cw_min, params->cw_max,
1754                                 params->aifs, params->txop << 5);
1755         if (ret < 0)
1756                 goto out_sleep;
1757
1758         if (params->uapsd)
1759                 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
1760         else
1761                 ps_scheme = CONF_PS_SCHEME_LEGACY;
1762
1763         ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
1764                                  CONF_CHANNEL_TYPE_EDCF,
1765                                  wl1271_tx_get_queue(queue),
1766                                  ps_scheme, CONF_ACK_POLICY_LEGACY, 0, 0);
1767         if (ret < 0)
1768                 goto out_sleep;
1769
1770 out_sleep:
1771         wl1271_ps_elp_sleep(wl);
1772
1773 out:
1774         mutex_unlock(&wl->mutex);
1775
1776         return ret;
1777 }
1778
1779
1780 /* can't be const, mac80211 writes to this */
1781 static struct ieee80211_rate wl1271_rates[] = {
1782         { .bitrate = 10,
1783           .hw_value = CONF_HW_BIT_RATE_1MBPS,
1784           .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
1785         { .bitrate = 20,
1786           .hw_value = CONF_HW_BIT_RATE_2MBPS,
1787           .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
1788           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1789         { .bitrate = 55,
1790           .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
1791           .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
1792           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1793         { .bitrate = 110,
1794           .hw_value = CONF_HW_BIT_RATE_11MBPS,
1795           .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
1796           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1797         { .bitrate = 60,
1798           .hw_value = CONF_HW_BIT_RATE_6MBPS,
1799           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
1800         { .bitrate = 90,
1801           .hw_value = CONF_HW_BIT_RATE_9MBPS,
1802           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
1803         { .bitrate = 120,
1804           .hw_value = CONF_HW_BIT_RATE_12MBPS,
1805           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
1806         { .bitrate = 180,
1807           .hw_value = CONF_HW_BIT_RATE_18MBPS,
1808           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
1809         { .bitrate = 240,
1810           .hw_value = CONF_HW_BIT_RATE_24MBPS,
1811           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
1812         { .bitrate = 360,
1813          .hw_value = CONF_HW_BIT_RATE_36MBPS,
1814          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
1815         { .bitrate = 480,
1816           .hw_value = CONF_HW_BIT_RATE_48MBPS,
1817           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
1818         { .bitrate = 540,
1819           .hw_value = CONF_HW_BIT_RATE_54MBPS,
1820           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
1821 };
1822
1823 /* can't be const, mac80211 writes to this */
1824 static struct ieee80211_channel wl1271_channels[] = {
1825         { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
1826         { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
1827         { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
1828         { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
1829         { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
1830         { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
1831         { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
1832         { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
1833         { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
1834         { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
1835         { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
1836         { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
1837         { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
1838 };
1839
1840 /* mapping to indexes for wl1271_rates */
1841 const static u8 wl1271_rate_to_idx_2ghz[] = {
1842         /* MCS rates are used only with 11n */
1843         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
1844         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
1845         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
1846         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
1847         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
1848         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
1849         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
1850         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
1851
1852         11,                            /* CONF_HW_RXTX_RATE_54   */
1853         10,                            /* CONF_HW_RXTX_RATE_48   */
1854         9,                             /* CONF_HW_RXTX_RATE_36   */
1855         8,                             /* CONF_HW_RXTX_RATE_24   */
1856
1857         /* TI-specific rate */
1858         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
1859
1860         7,                             /* CONF_HW_RXTX_RATE_18   */
1861         6,                             /* CONF_HW_RXTX_RATE_12   */
1862         3,                             /* CONF_HW_RXTX_RATE_11   */
1863         5,                             /* CONF_HW_RXTX_RATE_9    */
1864         4,                             /* CONF_HW_RXTX_RATE_6    */
1865         2,                             /* CONF_HW_RXTX_RATE_5_5  */
1866         1,                             /* CONF_HW_RXTX_RATE_2    */
1867         0                              /* CONF_HW_RXTX_RATE_1    */
1868 };
1869
1870 /* can't be const, mac80211 writes to this */
1871 static struct ieee80211_supported_band wl1271_band_2ghz = {
1872         .channels = wl1271_channels,
1873         .n_channels = ARRAY_SIZE(wl1271_channels),
1874         .bitrates = wl1271_rates,
1875         .n_bitrates = ARRAY_SIZE(wl1271_rates),
1876 };
1877
1878 /* 5 GHz data rates for WL1273 */
1879 static struct ieee80211_rate wl1271_rates_5ghz[] = {
1880         { .bitrate = 60,
1881           .hw_value = CONF_HW_BIT_RATE_6MBPS,
1882           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
1883         { .bitrate = 90,
1884           .hw_value = CONF_HW_BIT_RATE_9MBPS,
1885           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
1886         { .bitrate = 120,
1887           .hw_value = CONF_HW_BIT_RATE_12MBPS,
1888           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
1889         { .bitrate = 180,
1890           .hw_value = CONF_HW_BIT_RATE_18MBPS,
1891           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
1892         { .bitrate = 240,
1893           .hw_value = CONF_HW_BIT_RATE_24MBPS,
1894           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
1895         { .bitrate = 360,
1896          .hw_value = CONF_HW_BIT_RATE_36MBPS,
1897          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
1898         { .bitrate = 480,
1899           .hw_value = CONF_HW_BIT_RATE_48MBPS,
1900           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
1901         { .bitrate = 540,
1902           .hw_value = CONF_HW_BIT_RATE_54MBPS,
1903           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
1904 };
1905
1906 /* 5 GHz band channels for WL1273 */
1907 static struct ieee80211_channel wl1271_channels_5ghz[] = {
1908         { .hw_value = 183, .center_freq = 4915},
1909         { .hw_value = 184, .center_freq = 4920},
1910         { .hw_value = 185, .center_freq = 4925},
1911         { .hw_value = 187, .center_freq = 4935},
1912         { .hw_value = 188, .center_freq = 4940},
1913         { .hw_value = 189, .center_freq = 4945},
1914         { .hw_value = 192, .center_freq = 4960},
1915         { .hw_value = 196, .center_freq = 4980},
1916         { .hw_value = 7, .center_freq = 5035},
1917         { .hw_value = 8, .center_freq = 5040},
1918         { .hw_value = 9, .center_freq = 5045},
1919         { .hw_value = 11, .center_freq = 5055},
1920         { .hw_value = 12, .center_freq = 5060},
1921         { .hw_value = 16, .center_freq = 5080},
1922         { .hw_value = 34, .center_freq = 5170},
1923         { .hw_value = 36, .center_freq = 5180},
1924         { .hw_value = 38, .center_freq = 5190},
1925         { .hw_value = 40, .center_freq = 5200},
1926         { .hw_value = 42, .center_freq = 5210},
1927         { .hw_value = 44, .center_freq = 5220},
1928         { .hw_value = 46, .center_freq = 5230},
1929         { .hw_value = 48, .center_freq = 5240},
1930         { .hw_value = 52, .center_freq = 5260},
1931         { .hw_value = 56, .center_freq = 5280},
1932         { .hw_value = 60, .center_freq = 5300},
1933         { .hw_value = 64, .center_freq = 5320},
1934         { .hw_value = 100, .center_freq = 5500},
1935         { .hw_value = 104, .center_freq = 5520},
1936         { .hw_value = 108, .center_freq = 5540},
1937         { .hw_value = 112, .center_freq = 5560},
1938         { .hw_value = 116, .center_freq = 5580},
1939         { .hw_value = 120, .center_freq = 5600},
1940         { .hw_value = 124, .center_freq = 5620},
1941         { .hw_value = 128, .center_freq = 5640},
1942         { .hw_value = 132, .center_freq = 5660},
1943         { .hw_value = 136, .center_freq = 5680},
1944         { .hw_value = 140, .center_freq = 5700},
1945         { .hw_value = 149, .center_freq = 5745},
1946         { .hw_value = 153, .center_freq = 5765},
1947         { .hw_value = 157, .center_freq = 5785},
1948         { .hw_value = 161, .center_freq = 5805},
1949         { .hw_value = 165, .center_freq = 5825},
1950 };
1951
1952 /* mapping to indexes for wl1271_rates_5ghz */
1953 const static u8 wl1271_rate_to_idx_5ghz[] = {
1954         /* MCS rates are used only with 11n */
1955         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
1956         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
1957         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
1958         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
1959         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
1960         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
1961         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
1962         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
1963
1964         7,                             /* CONF_HW_RXTX_RATE_54   */
1965         6,                             /* CONF_HW_RXTX_RATE_48   */
1966         5,                             /* CONF_HW_RXTX_RATE_36   */
1967         4,                             /* CONF_HW_RXTX_RATE_24   */
1968
1969         /* TI-specific rate */
1970         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
1971
1972         3,                             /* CONF_HW_RXTX_RATE_18   */
1973         2,                             /* CONF_HW_RXTX_RATE_12   */
1974         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11   */
1975         1,                             /* CONF_HW_RXTX_RATE_9    */
1976         0,                             /* CONF_HW_RXTX_RATE_6    */
1977         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5  */
1978         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2    */
1979         CONF_HW_RXTX_RATE_UNSUPPORTED  /* CONF_HW_RXTX_RATE_1    */
1980 };
1981
1982 static struct ieee80211_supported_band wl1271_band_5ghz = {
1983         .channels = wl1271_channels_5ghz,
1984         .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
1985         .bitrates = wl1271_rates_5ghz,
1986         .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
1987 };
1988
1989 const static u8 *wl1271_band_rate_to_idx[] = {
1990         [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
1991         [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
1992 };
1993
1994 static const struct ieee80211_ops wl1271_ops = {
1995         .start = wl1271_op_start,
1996         .stop = wl1271_op_stop,
1997         .add_interface = wl1271_op_add_interface,
1998         .remove_interface = wl1271_op_remove_interface,
1999         .config = wl1271_op_config,
2000         .prepare_multicast = wl1271_op_prepare_multicast,
2001         .configure_filter = wl1271_op_configure_filter,
2002         .tx = wl1271_op_tx,
2003         .set_key = wl1271_op_set_key,
2004         .hw_scan = wl1271_op_hw_scan,
2005         .bss_info_changed = wl1271_op_bss_info_changed,
2006         .set_rts_threshold = wl1271_op_set_rts_threshold,
2007         .conf_tx = wl1271_op_conf_tx,
2008         CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
2009 };
2010
2011
2012 u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate)
2013 {
2014         u8 idx;
2015
2016         BUG_ON(wl->band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
2017
2018         if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
2019                 wl1271_error("Illegal RX rate from HW: %d", rate);
2020                 return 0;
2021         }
2022
2023         idx = wl1271_band_rate_to_idx[wl->band][rate];
2024         if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
2025                 wl1271_error("Unsupported RX rate from HW: %d", rate);
2026                 return 0;
2027         }
2028
2029         return idx;
2030 }
2031
2032 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
2033                                                struct device_attribute *attr,
2034                                                char *buf)
2035 {
2036         struct wl1271 *wl = dev_get_drvdata(dev);
2037         ssize_t len;
2038
2039         /* FIXME: what's the maximum length of buf? page size?*/
2040         len = 500;
2041
2042         mutex_lock(&wl->mutex);
2043         len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
2044                        wl->sg_enabled);
2045         mutex_unlock(&wl->mutex);
2046
2047         return len;
2048
2049 }
2050
2051 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
2052                                                 struct device_attribute *attr,
2053                                                 const char *buf, size_t count)
2054 {
2055         struct wl1271 *wl = dev_get_drvdata(dev);
2056         unsigned long res;
2057         int ret;
2058
2059         ret = strict_strtoul(buf, 10, &res);
2060
2061         if (ret < 0) {
2062                 wl1271_warning("incorrect value written to bt_coex_mode");
2063                 return count;
2064         }
2065
2066         mutex_lock(&wl->mutex);
2067
2068         res = !!res;
2069
2070         if (res == wl->sg_enabled)
2071                 goto out;
2072
2073         wl->sg_enabled = res;
2074
2075         if (wl->state == WL1271_STATE_OFF)
2076                 goto out;
2077
2078         ret = wl1271_ps_elp_wakeup(wl, false);
2079         if (ret < 0)
2080                 goto out;
2081
2082         wl1271_acx_sg_enable(wl, wl->sg_enabled);
2083         wl1271_ps_elp_sleep(wl);
2084
2085  out:
2086         mutex_unlock(&wl->mutex);
2087         return count;
2088 }
2089
2090 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
2091                    wl1271_sysfs_show_bt_coex_state,
2092                    wl1271_sysfs_store_bt_coex_state);
2093
2094 int wl1271_register_hw(struct wl1271 *wl)
2095 {
2096         int ret;
2097
2098         if (wl->mac80211_registered)
2099                 return 0;
2100
2101         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
2102
2103         ret = ieee80211_register_hw(wl->hw);
2104         if (ret < 0) {
2105                 wl1271_error("unable to register mac80211 hw: %d", ret);
2106                 return ret;
2107         }
2108
2109         wl->mac80211_registered = true;
2110
2111         wl1271_notice("loaded");
2112
2113         return 0;
2114 }
2115 EXPORT_SYMBOL_GPL(wl1271_register_hw);
2116
2117 void wl1271_unregister_hw(struct wl1271 *wl)
2118 {
2119         ieee80211_unregister_hw(wl->hw);
2120         wl->mac80211_registered = false;
2121
2122 }
2123 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
2124
2125 int wl1271_init_ieee80211(struct wl1271 *wl)
2126 {
2127         /* The tx descriptor buffer and the TKIP space. */
2128         wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
2129                 sizeof(struct wl1271_tx_hw_descr);
2130
2131         /* unit us */
2132         /* FIXME: find a proper value */
2133         wl->hw->channel_change_time = 10000;
2134
2135         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
2136                 IEEE80211_HW_NOISE_DBM |
2137                 IEEE80211_HW_BEACON_FILTER |
2138                 IEEE80211_HW_SUPPORTS_PS |
2139                 IEEE80211_HW_SUPPORTS_UAPSD |
2140                 IEEE80211_HW_HAS_RATE_CONTROL;
2141
2142         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2143                 BIT(NL80211_IFTYPE_ADHOC);
2144         wl->hw->wiphy->max_scan_ssids = 1;
2145         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
2146
2147         if (wl1271_11a_enabled())
2148                 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wl1271_band_5ghz;
2149
2150         wl->hw->queues = 4;
2151         wl->hw->max_rates = 1;
2152
2153         SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
2154
2155         return 0;
2156 }
2157 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
2158
2159 #define WL1271_DEFAULT_CHANNEL 0
2160
2161 struct ieee80211_hw *wl1271_alloc_hw(void)
2162 {
2163         struct ieee80211_hw *hw;
2164         struct platform_device *plat_dev = NULL;
2165         struct wl1271 *wl;
2166         int i, ret;
2167
2168         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
2169         if (!hw) {
2170                 wl1271_error("could not alloc ieee80211_hw");
2171                 ret = -ENOMEM;
2172                 goto err_hw_alloc;
2173         }
2174
2175         plat_dev = kmalloc(sizeof(wl1271_device), GFP_KERNEL);
2176         if (!plat_dev) {
2177                 wl1271_error("could not allocate platform_device");
2178                 ret = -ENOMEM;
2179                 goto err_plat_alloc;
2180         }
2181
2182         memcpy(plat_dev, &wl1271_device, sizeof(wl1271_device));
2183
2184         wl = hw->priv;
2185         memset(wl, 0, sizeof(*wl));
2186
2187         INIT_LIST_HEAD(&wl->list);
2188
2189         wl->hw = hw;
2190         wl->plat_dev = plat_dev;
2191
2192         skb_queue_head_init(&wl->tx_queue);
2193
2194         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
2195         wl->channel = WL1271_DEFAULT_CHANNEL;
2196         wl->default_key = 0;
2197         wl->rx_counter = 0;
2198         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
2199         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
2200         wl->psm_entry_retry = 0;
2201         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
2202         wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
2203         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
2204         wl->sta_rate_set = 0;
2205         wl->band = IEEE80211_BAND_2GHZ;
2206         wl->vif = NULL;
2207         wl->flags = 0;
2208         wl->sg_enabled = true;
2209
2210         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
2211                 wl->tx_frames[i] = NULL;
2212
2213         spin_lock_init(&wl->wl_lock);
2214
2215         wl->state = WL1271_STATE_OFF;
2216         mutex_init(&wl->mutex);
2217
2218         /* Apply default driver configuration. */
2219         wl1271_conf_init(wl);
2220
2221         wl1271_debugfs_init(wl);
2222
2223         /* Register platform device */
2224         ret = platform_device_register(wl->plat_dev);
2225         if (ret) {
2226                 wl1271_error("couldn't register platform device");
2227                 goto err_hw;
2228         }
2229         dev_set_drvdata(&wl->plat_dev->dev, wl);
2230
2231         /* Create sysfs file to control bt coex state */
2232         ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
2233         if (ret < 0) {
2234                 wl1271_error("failed to create sysfs file bt_coex_state");
2235                 goto err_platform;
2236         }
2237
2238         return hw;
2239
2240 err_platform:
2241         platform_device_unregister(wl->plat_dev);
2242
2243 err_hw:
2244         wl1271_debugfs_exit(wl);
2245         kfree(plat_dev);
2246
2247 err_plat_alloc:
2248         ieee80211_free_hw(hw);
2249
2250 err_hw_alloc:
2251
2252         return ERR_PTR(ret);
2253 }
2254 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
2255
2256 int wl1271_free_hw(struct wl1271 *wl)
2257 {
2258         platform_device_unregister(wl->plat_dev);
2259         kfree(wl->plat_dev);
2260
2261         wl1271_debugfs_exit(wl);
2262
2263         kfree(wl->target_mem_map);
2264         vfree(wl->fw);
2265         wl->fw = NULL;
2266         kfree(wl->nvs);
2267         wl->nvs = NULL;
2268
2269         kfree(wl->fw_status);
2270         kfree(wl->tx_res_if);
2271
2272         ieee80211_free_hw(wl->hw);
2273
2274         return 0;
2275 }
2276 EXPORT_SYMBOL_GPL(wl1271_free_hw);
2277
2278 MODULE_LICENSE("GPL");
2279 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
2280 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");