1 /*
2 * This file is part of wl1271
3 *
4 * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
5 * Copyright (C) 2008-2009 Nokia Corporation
6 *
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21 * 02110-1301 USA
22 *
23 */
24
25 #ifndef __WLCORE_I_H__
26 #define __WLCORE_I_H__
27
28 #include <linux/mutex.h>
29 #include <linux/completion.h>
30 #include <linux/spinlock.h>
31 #include <linux/list.h>
32 #include <linux/bitops.h>
33 #include <net/mac80211.h>
34
35 #include "conf.h"
36 #include "ini.h"
37
38 /*
39 * wl127x and wl128x are using the same NVS file name. However, the
40 * ini parameters between them are different. The driver validates
41 * the correct NVS size in wl1271_boot_upload_nvs().
42 */
43 #define WL12XX_NVS_NAME "ti-connectivity/wl1271-nvs.bin"
44
45 #define WL1271_TX_SECURITY_LO16(s) ((u16)((s) & 0xffff))
46 #define WL1271_TX_SECURITY_HI32(s) ((u32)(((s) >> 16) & 0xffffffff))
47 #define WL1271_TX_SQN_POST_RECOVERY_PADDING 0xff
48
49 #define WL1271_CIPHER_SUITE_GEM 0x00147201
50
51 #define WL1271_BUSY_WORD_CNT 1
52 #define WL1271_BUSY_WORD_LEN (WL1271_BUSY_WORD_CNT * sizeof(u32))
53
54 #define WL1271_ELP_HW_STATE_ASLEEP 0
55 #define WL1271_ELP_HW_STATE_IRQ 1
56
57 #define WL1271_DEFAULT_BEACON_INT 100
58 #define WL1271_DEFAULT_DTIM_PERIOD 1
59
60 #define WL12XX_MAX_ROLES 4
61 #define WL12XX_MAX_LINKS 12
62 #define WL12XX_INVALID_ROLE_ID 0xff
63 #define WL12XX_INVALID_LINK_ID 0xff
64
65 /* the driver supports the 2.4Ghz and 5Ghz bands */
66 #define WLCORE_NUM_BANDS 2
67
68 #define WL12XX_MAX_RATE_POLICIES 16
69 #define WLCORE_MAX_KLV_TEMPLATES 4
70
71 /* Defined by FW as 0. Will not be freed or allocated. */
72 #define WL12XX_SYSTEM_HLID 0
73
74 /*
75 * When in AP-mode, we allow (at least) this number of packets
76 * to be transmitted to FW for a STA in PS-mode. Only when packets are
77 * present in the FW buffers it will wake the sleeping STA. We want to put
78 * enough packets for the driver to transmit all of its buffered data before
79 * the STA goes to sleep again. But we don't want to take too much memory
80 * as it might hurt the throughput of active STAs.
81 */
82 #define WL1271_PS_STA_MAX_PACKETS 2
83
84 #define WL1271_AP_BSS_INDEX 0
85 #define WL1271_AP_DEF_BEACON_EXP 20
86
87 enum wlcore_state {
88 WLCORE_STATE_OFF,
89 WLCORE_STATE_RESTARTING,
90 WLCORE_STATE_ON,
91 };
92
93 enum wl12xx_fw_type {
94 WL12XX_FW_TYPE_NONE,
95 WL12XX_FW_TYPE_NORMAL,
96 WL12XX_FW_TYPE_MULTI,
97 WL12XX_FW_TYPE_PLT,
98 };
99
100 struct wl1271;
101
102 enum {
103 FW_VER_CHIP,
104 FW_VER_IF_TYPE,
105 FW_VER_MAJOR,
106 FW_VER_SUBTYPE,
107 FW_VER_MINOR,
108
109 NUM_FW_VER
110 };
111
112 struct wl1271_chip {
113 u32 id;
114 char fw_ver_str[ETHTOOL_FWVERS_LEN];
115 unsigned int fw_ver[NUM_FW_VER];
116 char phy_fw_ver_str[ETHTOOL_FWVERS_LEN];
117 };
118
119 #define NUM_TX_QUEUES 4
120
121 #define AP_MAX_STATIONS 8
122
123 struct wl_fw_packet_counters {
124 /* Cumulative counter of released packets per AC */
125 u8 tx_released_pkts[NUM_TX_QUEUES];
126
127 /* Cumulative counter of freed packets per HLID */
128 u8 tx_lnk_free_pkts[WL12XX_MAX_LINKS];
129
130 /* Cumulative counter of released Voice memory blocks */
131 u8 tx_voice_released_blks;
132
133 /* Tx rate of the last transmitted packet */
134 u8 tx_last_rate;
135
136 u8 padding[2];
137 } __packed;
138
139 /* FW status registers */
140 struct wl_fw_status_1 {
141 __le32 intr;
142 u8 fw_rx_counter;
143 u8 drv_rx_counter;
144 u8 reserved;
145 u8 tx_results_counter;
146 __le32 rx_pkt_descs[0];
147 } __packed;
148
149 /*
150 * Each HW arch has a different number of Rx descriptors.
151 * The length of the status depends on it, since it holds an array
152 * of descriptors.
153 */
154 #define WLCORE_FW_STATUS_1_LEN(num_rx_desc) \
155 (sizeof(struct wl_fw_status_1) + \
156 (sizeof(((struct wl_fw_status_1 *)0)->rx_pkt_descs[0])) * \
157 num_rx_desc)
158
159 struct wl_fw_status_2 {
160 __le32 fw_localtime;
161
162 /*
163 * A bitmap (where each bit represents a single HLID)
164 * to indicate if the station is in PS mode.
165 */
166 __le32 link_ps_bitmap;
167
168 /*
169 * A bitmap (where each bit represents a single HLID) to indicate
170 * if the station is in Fast mode
171 */
172 __le32 link_fast_bitmap;
173
174 /* Cumulative counter of total released mem blocks since FW-reset */
175 __le32 total_released_blks;
176
177 /* Size (in Memory Blocks) of TX pool */
178 __le32 tx_total;
179
180 struct wl_fw_packet_counters counters;
181
182 __le32 log_start_addr;
183
184 /* Private status to be used by the lower drivers */
185 u8 priv[0];
186 } __packed;
187
188 #define WL1271_MAX_CHANNELS 64
189 struct wl1271_scan {
190 struct cfg80211_scan_request *req;
191 unsigned long scanned_ch[BITS_TO_LONGS(WL1271_MAX_CHANNELS)];
192 bool failed;
193 u8 state;
194 u8 ssid[IEEE80211_MAX_SSID_LEN+1];
195 size_t ssid_len;
196 };
197
198 struct wl1271_if_operations {
199 int __must_check (*read)(struct device *child, int addr, void *buf,
200 size_t len, bool fixed);
201 int __must_check (*write)(struct device *child, int addr, void *buf,
202 size_t len, bool fixed);
203 void (*reset)(struct device *child);
204 void (*init)(struct device *child);
205 int (*power)(struct device *child, bool enable);
206 void (*set_block_size) (struct device *child, unsigned int blksz);
207 };
208
209 struct wlcore_platdev_data {
210 struct wl12xx_platform_data *pdata;
211 struct wl1271_if_operations *if_ops;
212 };
213
214 #define MAX_NUM_KEYS 14
215 #define MAX_KEY_SIZE 32
216
217 struct wl1271_ap_key {
218 u8 id;
219 u8 key_type;
220 u8 key_size;
221 u8 key[MAX_KEY_SIZE];
222 u8 hlid;
223 u32 tx_seq_32;
224 u16 tx_seq_16;
225 };
226
227 enum wl12xx_flags {
228 WL1271_FLAG_GPIO_POWER,
229 WL1271_FLAG_TX_QUEUE_STOPPED,
230 WL1271_FLAG_TX_PENDING,
231 WL1271_FLAG_IN_ELP,
232 WL1271_FLAG_ELP_REQUESTED,
233 WL1271_FLAG_IRQ_RUNNING,
234 WL1271_FLAG_FW_TX_BUSY,
235 WL1271_FLAG_DUMMY_PACKET_PENDING,
236 WL1271_FLAG_SUSPENDED,
237 WL1271_FLAG_PENDING_WORK,
238 WL1271_FLAG_SOFT_GEMINI,
239 WL1271_FLAG_RECOVERY_IN_PROGRESS,
240 WL1271_FLAG_VIF_CHANGE_IN_PROGRESS,
241 WL1271_FLAG_INTENDED_FW_RECOVERY,
242 WL1271_FLAG_IO_FAILED,
243 };
244
245 enum wl12xx_vif_flags {
246 WLVIF_FLAG_INITIALIZED,
247 WLVIF_FLAG_STA_ASSOCIATED,
248 WLVIF_FLAG_STA_AUTHORIZED,
249 WLVIF_FLAG_IBSS_JOINED,
250 WLVIF_FLAG_AP_STARTED,
251 WLVIF_FLAG_IN_PS,
252 WLVIF_FLAG_STA_STATE_SENT,
253 WLVIF_FLAG_RX_STREAMING_STARTED,
254 WLVIF_FLAG_PSPOLL_FAILURE,
255 WLVIF_FLAG_CS_PROGRESS,
256 WLVIF_FLAG_AP_PROBE_RESP_SET,
257 WLVIF_FLAG_IN_USE,
258 };
259
260 struct wl12xx_vif;
261
262 struct wl1271_link {
263 /* AP-mode - TX queue per AC in link */
264 struct sk_buff_head tx_queue[NUM_TX_QUEUES];
265
266 /* accounting for allocated / freed packets in FW */
267 u8 allocated_pkts;
268 u8 prev_freed_pkts;
269
270 u8 addr[ETH_ALEN];
271
272 /* bitmap of TIDs where RX BA sessions are active for this link */
273 u8 ba_bitmap;
274
275 /* The wlvif this link belongs to. Might be null for global links */
276 struct wl12xx_vif *wlvif;
277
278 /*
279 * total freed FW packets on the link - used for tracking the
280 * AES/TKIP PN across recoveries. Re-initialized each time
281 * from the wl1271_station structure.
282 */
283 u64 total_freed_pkts;
284 };
285
286 #define WL1271_MAX_RX_FILTERS 5
287 #define WL1271_RX_FILTER_MAX_FIELDS 8
288
289 #define WL1271_RX_FILTER_ETH_HEADER_SIZE 14
290 #define WL1271_RX_FILTER_MAX_FIELDS_SIZE 95
291 #define RX_FILTER_FIELD_OVERHEAD \
292 (sizeof(struct wl12xx_rx_filter_field) - sizeof(u8 *))
293 #define WL1271_RX_FILTER_MAX_PATTERN_SIZE \
294 (WL1271_RX_FILTER_MAX_FIELDS_SIZE - RX_FILTER_FIELD_OVERHEAD)
295
296 #define WL1271_RX_FILTER_FLAG_MASK BIT(0)
297 #define WL1271_RX_FILTER_FLAG_IP_HEADER 0
298 #define WL1271_RX_FILTER_FLAG_ETHERNET_HEADER BIT(1)
299
300 enum rx_filter_action {
301 FILTER_DROP = 0,
302 FILTER_SIGNAL = 1,
303 FILTER_FW_HANDLE = 2
304 };
305
306 enum plt_mode {
307 PLT_OFF = 0,
308 PLT_ON = 1,
309 PLT_FEM_DETECT = 2,
310 };
311
312 struct wl12xx_rx_filter_field {
313 __le16 offset;
314 u8 len;
315 u8 flags;
316 u8 *pattern;
317 } __packed;
318
319 struct wl12xx_rx_filter {
320 u8 action;
321 int num_fields;
322 struct wl12xx_rx_filter_field fields[WL1271_RX_FILTER_MAX_FIELDS];
323 };
324
325 struct wl1271_station {
326 u8 hlid;
327 bool in_connection;
328
329 /*
330 * total freed FW packets on the link to the STA - used for tracking the
331 * AES/TKIP PN across recoveries. Re-initialized each time from the
332 * wl1271_station structure.
333 */
334 u64 total_freed_pkts;
335 };
336
337 struct wl12xx_vif {
338 struct wl1271 *wl;
339 struct list_head list;
340 unsigned long flags;
341 u8 bss_type;
342 u8 p2p; /* we are using p2p role */
343 u8 role_id;
344
345 /* sta/ibss specific */
346 u8 dev_role_id;
347 u8 dev_hlid;
348
349 union {
350 struct {
351 u8 hlid;
352
353 u8 basic_rate_idx;
354 u8 ap_rate_idx;
355 u8 p2p_rate_idx;
356
357 u8 klv_template_id;
358
359 bool qos;
360 /* channel type we started the STA role with */
361 enum nl80211_channel_type role_chan_type;
362 } sta;
363 struct {
364 u8 global_hlid;
365 u8 bcast_hlid;
366
367 /* HLIDs bitmap of associated stations */
368 unsigned long sta_hlid_map[BITS_TO_LONGS(
369 WL12XX_MAX_LINKS)];
370
371 /* recoreded keys - set here before AP startup */
372 struct wl1271_ap_key *recorded_keys[MAX_NUM_KEYS];
373
374 u8 mgmt_rate_idx;
375 u8 bcast_rate_idx;
376 u8 ucast_rate_idx[CONF_TX_MAX_AC_COUNT];
377 } ap;
378 };
379
380 /* the hlid of the last transmitted skb */
381 int last_tx_hlid;
382
383 /* counters of packets per AC, across all links in the vif */
384 int tx_queue_count[NUM_TX_QUEUES];
385
386 unsigned long links_map[BITS_TO_LONGS(WL12XX_MAX_LINKS)];
387
388 u8 ssid[IEEE80211_MAX_SSID_LEN + 1];
389 u8 ssid_len;
390
391 /* The current band */
392 enum ieee80211_band band;
393 int channel;
394 enum nl80211_channel_type channel_type;
395
396 u32 bitrate_masks[WLCORE_NUM_BANDS];
397 u32 basic_rate_set;
398
399 /*
400 * currently configured rate set:
401 * bits 0-15 - 802.11abg rates
402 * bits 16-23 - 802.11n MCS index mask
403 * support only 1 stream, thus only 8 bits for the MCS rates (0-7).
404 */
405 u32 basic_rate;
406 u32 rate_set;
407
408 /* probe-req template for the current AP */
409 struct sk_buff *probereq;
410
411 /* Beaconing interval (needed for ad-hoc) */
412 u32 beacon_int;
413
414 /* Default key (for WEP) */
415 u32 default_key;
416
417 /* Our association ID */
418 u16 aid;
419
420 /* retry counter for PSM entries */
421 u8 psm_entry_retry;
422
423 /* in dBm */
424 int power_level;
425
426 int rssi_thold;
427 int last_rssi_event;
428
429 /* save the current encryption type for auto-arp config */
430 u8 encryption_type;
431 __be32 ip_addr;
432
433 /* RX BA constraint value */
434 bool ba_support;
435 bool ba_allowed;
436
437 bool wmm_enabled;
438
439 /* Rx Streaming */
440 struct work_struct rx_streaming_enable_work;
441 struct work_struct rx_streaming_disable_work;
442 struct timer_list rx_streaming_timer;
443
444 struct delayed_work channel_switch_work;
445 struct delayed_work connection_loss_work;
446
447 /* number of in connection stations */
448 int inconn_count;
449
450 /*
451 * This vif's queues are mapped to mac80211 HW queues as:
452 * VO - hw_queue_base
453 * VI - hw_queue_base + 1
454 * BE - hw_queue_base + 2
455 * BK - hw_queue_base + 3
456 */
457 int hw_queue_base;
458
459 /*
460 * This struct must be last!
461 * data that has to be saved acrossed reconfigs (e.g. recovery)
462 * should be declared in this struct.
463 */
464 struct {
465 u8 persistent[0];
466
467 /*
468 * total freed FW packets on the link - used for
469 * storing the AES/TKIP PN during recovery, as this
470 * structure is not zeroed out.
471 * For STA this holds the PN of the link to the AP.
472 * For AP this holds the PN of the broadcast link.
473 */
474 u64 total_freed_pkts;
475 };
476 };
477
wl12xx_vif_to_data(struct ieee80211_vif * vif)478 static inline struct wl12xx_vif *wl12xx_vif_to_data(struct ieee80211_vif *vif)
479 {
480 WARN_ON(!vif);
481 return (struct wl12xx_vif *)vif->drv_priv;
482 }
483
484 static inline
wl12xx_wlvif_to_vif(struct wl12xx_vif * wlvif)485 struct ieee80211_vif *wl12xx_wlvif_to_vif(struct wl12xx_vif *wlvif)
486 {
487 return container_of((void *)wlvif, struct ieee80211_vif, drv_priv);
488 }
489
490 #define wl12xx_for_each_wlvif(wl, wlvif) \
491 list_for_each_entry(wlvif, &wl->wlvif_list, list)
492
493 #define wl12xx_for_each_wlvif_continue(wl, wlvif) \
494 list_for_each_entry_continue(wlvif, &wl->wlvif_list, list)
495
496 #define wl12xx_for_each_wlvif_bss_type(wl, wlvif, _bss_type) \
497 wl12xx_for_each_wlvif(wl, wlvif) \
498 if (wlvif->bss_type == _bss_type)
499
500 #define wl12xx_for_each_wlvif_sta(wl, wlvif) \
501 wl12xx_for_each_wlvif_bss_type(wl, wlvif, BSS_TYPE_STA_BSS)
502
503 #define wl12xx_for_each_wlvif_ap(wl, wlvif) \
504 wl12xx_for_each_wlvif_bss_type(wl, wlvif, BSS_TYPE_AP_BSS)
505
506 int wl1271_plt_start(struct wl1271 *wl, const enum plt_mode plt_mode);
507 int wl1271_plt_stop(struct wl1271 *wl);
508 int wl1271_recalc_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif);
509 void wl12xx_queue_recovery_work(struct wl1271 *wl);
510 size_t wl12xx_copy_fwlog(struct wl1271 *wl, u8 *memblock, size_t maxlen);
511 int wl1271_rx_filter_alloc_field(struct wl12xx_rx_filter *filter,
512 u16 offset, u8 flags,
513 u8 *pattern, u8 len);
514 void wl1271_rx_filter_free(struct wl12xx_rx_filter *filter);
515 struct wl12xx_rx_filter *wl1271_rx_filter_alloc(void);
516 int wl1271_rx_filter_get_fields_size(struct wl12xx_rx_filter *filter);
517 void wl1271_rx_filter_flatten_fields(struct wl12xx_rx_filter *filter,
518 u8 *buf);
519
520 #define JOIN_TIMEOUT 5000 /* 5000 milliseconds to join */
521
522 #define SESSION_COUNTER_MAX 6 /* maximum value for the session counter */
523 #define SESSION_COUNTER_INVALID 7 /* used with dummy_packet */
524
525 #define WL1271_DEFAULT_POWER_LEVEL 0
526
527 #define WL1271_TX_QUEUE_LOW_WATERMARK 32
528 #define WL1271_TX_QUEUE_HIGH_WATERMARK 256
529
530 #define WL1271_DEFERRED_QUEUE_LIMIT 64
531
532 /* WL1271 needs a 200ms sleep after power on, and a 20ms sleep before power
533 on in case is has been shut down shortly before */
534 #define WL1271_PRE_POWER_ON_SLEEP 20 /* in milliseconds */
535 #define WL1271_POWER_ON_SLEEP 200 /* in milliseconds */
536
537 /* Macros to handle wl1271.sta_rate_set */
538 #define HW_BG_RATES_MASK 0xffff
539 #define HW_HT_RATES_OFFSET 16
540 #define HW_MIMO_RATES_OFFSET 24
541
542 #define WL12XX_HW_BLOCK_SIZE 256
543
544 #endif /* __WLCORE_I_H__ */
545