iwl-dev.h 30.6 KB
Newer Older
1
2
/******************************************************************************
 *
3
 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
22
 *  Intel Linux Wireless <ilw@linux.intel.com>
23
24
25
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/
26
/*
27
 * Please use this file (iwl-dev.h) for driver implementation definitions.
28
 * Please use iwl-commands.h for uCode API definitions.
29
30
31
 * Please use iwl-4965-hw.h for hardware-related definitions.
 */

32
33
#ifndef __iwl_dev_h__
#define __iwl_dev_h__
34

35
36
37
38
#include <linux/pci.h> /* for struct pci_device_id */
#include <linux/kernel.h>
#include <net/ieee80211_radiotap.h>

39
#include "iwl-eeprom.h"
Tomas Winkler's avatar
Tomas Winkler committed
40
#include "iwl-csr.h"
41
#include "iwl-prph.h"
Winkler, Tomas's avatar
Winkler, Tomas committed
42
#include "iwl-fh.h"
43
#include "iwl-debug.h"
Winkler, Tomas's avatar
Winkler, Tomas committed
44
45
46
47
#include "iwl-rfkill.h"
#include "iwl-4965-hw.h"
#include "iwl-3945-hw.h"
#include "iwl-3945-led.h"
Mohamed Abbas's avatar
Mohamed Abbas committed
48
#include "iwl-led.h"
49
#include "iwl-power.h"
50
#include "iwl-agn-rs.h"
51

52
53
/* configuration for the iwl4965 */
extern struct iwl_cfg iwl4965_agn_cfg;
54
55
56
extern struct iwl_cfg iwl5300_agn_cfg;
extern struct iwl_cfg iwl5100_agn_cfg;
extern struct iwl_cfg iwl5350_agn_cfg;
57
58
extern struct iwl_cfg iwl5100_bg_cfg;
extern struct iwl_cfg iwl5100_abg_cfg;
59
extern struct iwl_cfg iwl5150_agn_cfg;
60
61
62
63
64
extern struct iwl_cfg iwl6000_2ag_cfg;
extern struct iwl_cfg iwl6000_2agn_cfg;
extern struct iwl_cfg iwl6000_3agn_cfg;
extern struct iwl_cfg iwl6050_2agn_cfg;
extern struct iwl_cfg iwl6050_3agn_cfg;
65
extern struct iwl_cfg iwl100_bgn_cfg;
66

67
68
69
70
/* shared structures from iwl-5000.c */
extern struct iwl_mod_params iwl50_mod_params;
extern struct iwl_ops iwl5000_ops;

71
72
/* CT-KILL constants */
#define CT_KILL_THRESHOLD	110 /* in Celsius */
73

74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
/* Default noise level to report when noise measurement is not available.
 *   This may be because we're:
 *   1)  Not associated (4965, no beacon statistics being sent to driver)
 *   2)  Scanning (noise measurement does not apply to associated channel)
 *   3)  Receiving CCK (3945 delivers noise info only for OFDM frames)
 * Use default noise value of -127 ... this is below the range of measurable
 *   Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
 *   Also, -127 works better than 0 when averaging frames with/without
 *   noise info (e.g. averaging might be done in app); measured dBm values are
 *   always negative ... using a negative value as the default keeps all
 *   averages within an s8's (used in some apps) range of negative values. */
#define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)

/*
 * RTS threshold here is total size [2347] minus 4 FCS bytes
 * Per spec:
 *   a value of 0 means RTS on all data/management packets
 *   a value > max MSDU size means no RTS
 * else RTS for data/management frames where MPDU is larger
 *   than RTS value.
 */
#define DEFAULT_RTS_THRESHOLD     2347U
#define MIN_RTS_THRESHOLD         0U
#define MAX_RTS_THRESHOLD         2347U
#define MAX_MSDU_SIZE		  2304U
#define MAX_MPDU_SIZE		  2346U
#define DEFAULT_BEACON_INTERVAL   100U
#define	DEFAULT_SHORT_RETRY_LIMIT 7U
#define	DEFAULT_LONG_RETRY_LIMIT  4U

104
struct iwl_rx_mem_buffer {
Johannes Berg's avatar
Johannes Berg committed
105
106
	dma_addr_t real_dma_addr;
	dma_addr_t aligned_dma_addr;
107
108
109
110
111
112
113
114
115
	struct sk_buff *skb;
	struct list_head list;
};

/*
 * Generic queue structure
 *
 * Contains common data for Rx and Tx queues
 */
116
struct iwl_queue {
117
118
119
120
121
122
123
124
125
126
127
128
	int n_bd;              /* number of BDs in this queue */
	int write_ptr;       /* 1-st empty entry (index) host_w*/
	int read_ptr;         /* last used entry (index) host_r*/
	dma_addr_t dma_addr;   /* physical addr for BD's */
	int n_window;	       /* safe queue window */
	u32 id;
	int low_mark;	       /* low watermark, resume queue if free
				* space more than this */
	int high_mark;         /* high watermark, stop queue if free
				* space less than this */
} __attribute__ ((packed));

129
/* One for each TFD */
130
struct iwl_tx_info {
131
	struct sk_buff *skb[IWL_NUM_OF_TBS - 1];
132
133
134
};

/**
135
 * struct iwl_tx_queue - Tx Queue for DMA
136
137
138
139
140
141
142
 * @q: generic Rx/Tx queue descriptor
 * @bd: base of circular buffer of TFDs
 * @cmd: array of command/Tx buffers
 * @dma_addr_cmd: physical address of cmd/tx buffer array
 * @txb: array of per-TFD driver data
 * @need_update: indicates need to update read/write index
 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
143
 *
144
145
 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
 * descriptors) and required locking structures.
146
 */
147
148
149
#define TFD_TX_CMD_SLOTS 256
#define TFD_CMD_SLOTS 32

150
struct iwl_tx_queue {
151
	struct iwl_queue q;
152
	void *tfds;
153
	struct iwl_cmd *cmd[TFD_TX_CMD_SLOTS];
154
	struct iwl_tx_info *txb;
155
156
157
158
	u8 need_update;
	u8 sched_retry;
	u8 active;
	u8 swq_id;
159
160
161
162
};

#define IWL_NUM_SCAN_RATES         (2)

Christoph Hellwig's avatar
Christoph Hellwig committed
163
struct iwl4965_channel_tgd_info {
164
165
166
167
	u8 type;
	s8 max_power;
};

Christoph Hellwig's avatar
Christoph Hellwig committed
168
struct iwl4965_channel_tgh_info {
169
170
171
	s64 last_radar_time;
};

172
173
#define IWL4965_MAX_RATE (33)

174
175
176
177
178
179
struct iwl3945_clip_group {
	/* maximum power level to prevent clipping for each rate, derived by
	 *   us from this band's saturation power in EEPROM */
	const s8 clip_powers[IWL_MAX_RATES];
};

180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
/* current Tx power values to use, one for each rate for each channel.
 * requested power is limited by:
 * -- regulatory EEPROM limits for this channel
 * -- hardware capabilities (clip-powers)
 * -- spectrum management
 * -- user preference (e.g. iwconfig)
 * when requested power is set, base power index must also be set. */
struct iwl3945_channel_power_info {
	struct iwl3945_tx_power tpc;	/* actual radio and DSP gain settings */
	s8 power_table_index;	/* actual (compenst'd) index into gain table */
	s8 base_power_index;	/* gain index for power at factory temp. */
	s8 requested_power;	/* power (dBm) requested for this chnl/rate */
};

/* current scan Tx power values to use, one for each scan rate for each
 * channel. */
struct iwl3945_scan_power_info {
	struct iwl3945_tx_power tpc;	/* actual radio and DSP gain settings */
	s8 power_table_index;	/* actual (compenst'd) index into gain table */
	s8 requested_power;	/* scan pwr (dBm) requested for chnl/rate */
};

202
203
204
205
206
/*
 * One for each channel, holds all channel setup data
 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
 *     with one another!
 */
207
struct iwl_channel_info {
Christoph Hellwig's avatar
Christoph Hellwig committed
208
209
	struct iwl4965_channel_tgd_info tgd;
	struct iwl4965_channel_tgh_info tgh;
210
211
212
	struct iwl_eeprom_channel eeprom;	/* EEPROM regulatory limit */
	struct iwl_eeprom_channel fat_eeprom;	/* EEPROM regulatory limit for
						 * FAT channel */
213
214
215
216

	u8 channel;	  /* channel number */
	u8 flags;	  /* flags copied from EEPROM */
	s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
217
	s8 curr_txpow;	  /* (dBm) regulatory/spectrum/user (not h/w) limit */
218
219
220
221
222
	s8 min_power;	  /* always 0 */
	s8 scan_power;	  /* (dBm) regul. eeprom, direct scans, any rate */

	u8 group_index;	  /* 0-4, maps channel to group1/2/3/4/5 */
	u8 band_index;	  /* 0-4, maps channel to band1/2/3/4/5 */
223
	enum ieee80211_band band;
224
225
226
227
228
229
230

	/* FAT channel info */
	s8 fat_max_power_avg;	/* (dBm) regul. eeprom, normal Tx, any rate */
	s8 fat_curr_txpow;	/* (dBm) regulatory/spectrum/user (not h/w) */
	s8 fat_min_power;	/* always 0 */
	s8 fat_scan_power;	/* (dBm) eeprom, direct scans, any rate */
	u8 fat_flags;		/* flags copied from EEPROM */
231
	u8 fat_extension_channel; /* HT_IE_EXT_CHANNEL_* */
232
233
234
235
236
237
238
239

	/* Radio/DSP gain settings for each "normal" data Tx rate.
	 * These include, in addition to RF and DSP gain, a few fields for
	 *   remembering/modifying gain settings (indexes). */
	struct iwl3945_channel_power_info power_info[IWL4965_MAX_RATE];

	/* Radio/DSP gain settings for each scan rate, for directed scans. */
	struct iwl3945_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
};

#define IWL_TX_FIFO_AC0	0
#define IWL_TX_FIFO_AC1	1
#define IWL_TX_FIFO_AC2	2
#define IWL_TX_FIFO_AC3	3
#define IWL_TX_FIFO_HCCA_1	5
#define IWL_TX_FIFO_HCCA_2	6
#define IWL_TX_FIFO_NONE	7

/* Minimum number of queues. MAX_NUM is defined in hw specific files */
#define IWL_MIN_NUM_QUEUES	4

/* Power management (not Tx power) structures */

Tomas Winkler's avatar
Tomas Winkler committed
255
256
257
258
259
enum iwl_pwr_src {
	IWL_PWR_SRC_VMAIN,
	IWL_PWR_SRC_VAUX,
};

260
261
262
263
264
#define IEEE80211_DATA_LEN              2304
#define IEEE80211_4ADDR_LEN             30
#define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
#define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)

265
struct iwl_frame {
266
267
	union {
		struct ieee80211_hdr frame;
268
		struct iwl_tx_beacon_cmd beacon;
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
		u8 raw[IEEE80211_FRAME_LEN];
		u8 cmd[360];
	} u;
	struct list_head list;
};

#define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
#define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
#define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)

enum {
	/* CMD_SIZE_NORMAL = 0, */
	CMD_SIZE_HUGE = (1 << 0),
	/* CMD_SYNC = 0, */
	CMD_ASYNC = (1 << 1),
	/* CMD_NO_SKB = 0, */
	CMD_WANT_SKB = (1 << 2),
};

288
struct iwl_cmd;
289
struct iwl_priv;
290

291
292
struct iwl_cmd_meta {
	struct iwl_cmd_meta *source;
293
294
	union {
		struct sk_buff *skb;
295
		int (*callback)(struct iwl_priv *priv,
296
				struct iwl_cmd *cmd, struct sk_buff *skb);
297
298
299
300
301
	} __attribute__ ((packed)) u;

	/* The CMD_SIZE_HUGE flag bit indicates that the command
	 * structure is stored at the end of the shared queue memory. */
	u32 flags;
302
303
	DECLARE_PCI_UNMAP_ADDR(mapping)
	DECLARE_PCI_UNMAP_LEN(len)
304
305
} __attribute__ ((packed));

306
#define IWL_CMD_MAX_PAYLOAD 320
307

308
/**
309
 * struct iwl_cmd
310
311
312
313
314
 *
 * For allocation of the command and tx queues, this establishes the overall
 * size of the largest command we send to uCode, except for a scan command
 * (which is relatively huge; space is allocated separately).
 */
315
316
317
struct iwl_cmd {
	struct iwl_cmd_meta meta;	/* driver data */
	struct iwl_cmd_header hdr;	/* uCode API */
318
319
320
321
322
	union {
		u32 flags;
		u8 val8;
		u16 val16;
		u32 val32;
323
		struct iwl_tx_cmd tx;
324
		u8 payload[IWL_CMD_MAX_PAYLOAD];
325
326
327
	} __attribute__ ((packed)) cmd;
} __attribute__ ((packed));

328

329
struct iwl_host_cmd {
330
331
	u8 id;
	u16 len;
332
	struct iwl_cmd_meta meta;
333
334
335
	const void *data;
};

336
337
#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_cmd) - \
			      sizeof(struct iwl_cmd_meta))
338
339
340
341
342
343
344
345
346
347
348
349

/*
 * RX related structures and functions
 */
#define RX_FREE_BUFFERS 64
#define RX_LOW_WATERMARK 8

#define SUP_RATE_11A_MAX_NUM_CHANNELS  8
#define SUP_RATE_11B_MAX_NUM_CHANNELS  4
#define SUP_RATE_11G_MAX_NUM_CHANNELS  12

/**
350
 * struct iwl_rx_queue - Rx queue
351
352
353
354
355
356
357
 * @read: Shared index to newest available Rx buffer
 * @write: Shared index to oldest written Rx packet
 * @free_count: Number of pre-allocated buffers in rx_free
 * @rx_free: list of free SKBs for use
 * @rx_used: List of Rx buffers with no SKB
 * @need_update: flag to indicate we need to update read/write index
 *
358
 * NOTE:  rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
359
 */
360
struct iwl_rx_queue {
361
362
	__le32 *bd;
	dma_addr_t dma_addr;
363
364
	struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
	struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
365
366
367
368
369
370
	u32 read;
	u32 write;
	u32 free_count;
	struct list_head rx_free;
	struct list_head rx_used;
	int need_update;
371
372
	struct iwl_rb_status *rb_stts;
	dma_addr_t rb_stts_dma;
373
374
375
376
377
378
379
380
381
382
	spinlock_t lock;
};

#define IWL_SUPPORTED_RATES_IE_LEN         8

#define MAX_TID_COUNT        9

#define IWL_INVALID_RATE     0xFF
#define IWL_INVALID_VALUE    -1

383
/**
384
 * struct iwl_ht_agg -- aggregation status while waiting for block-ack
385
386
387
388
389
390
391
392
393
394
395
396
 * @txq_id: Tx queue used for Tx attempt
 * @frame_count: # frames attempted by Tx command
 * @wait_for_ba: Expect block-ack before next Tx reply
 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
 * @bitmap1: High order, one bit for each frame pending ACK in Tx window
 * @rate_n_flags: Rate at which Tx was attempted
 *
 * If REPLY_TX indicates that aggregation was attempted, driver must wait
 * for block ack (REPLY_COMPRESSED_BA).  This struct stores tx reply info
 * until block ack arrives.
 */
397
struct iwl_ht_agg {
398
399
400
401
	u16 txq_id;
	u16 frame_count;
	u16 wait_for_ba;
	u16 start_idx;
402
	u64 bitmap;
403
	u32 rate_n_flags;
404
405
406
407
408
#define IWL_AGG_OFF 0
#define IWL_AGG_ON 1
#define IWL_EMPTYING_HW_QUEUE_ADDBA 2
#define IWL_EMPTYING_HW_QUEUE_DELBA 3
	u8 state;
409
};
410

411

412
struct iwl_tid_data {
413
	u16 seq_number;
414
	u16 tfds_in_queue;
415
	struct iwl_ht_agg agg;
416
417
};

418
struct iwl_hw_key {
419
420
	enum ieee80211_key_alg alg;
	int keylen;
421
	u8 keyidx;
422
423
424
	u8 key[32];
};

425
union iwl_ht_rate_supp {
426
427
428
429
430
431
432
433
434
435
436
	u16 rates;
	struct {
		u8 siso_rate;
		u8 mimo_rate;
	};
};

#define CFG_HT_RX_AMPDU_FACTOR_DEF  (0x3)
#define CFG_HT_MPDU_DENSITY_2USEC   (0x5)
#define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC

437
438
struct iwl_ht_info {
	/* self configuration data */
439
	u8 is_ht;
440
	u8 supported_chan_width;
441
	u8 sm_ps;
442
	u8 is_green_field;
Tomas Winkler's avatar
Tomas Winkler committed
443
	u8 sgf;			/* HT_SHORT_GI_* short guard interval */
444
445
446
	u8 max_amsdu_size;
	u8 ampdu_factor;
	u8 mpdu_density;
447
	struct ieee80211_mcs_info mcs;
448
	/* BSS related data */
449
450
	u8 extension_chan_offset;
	u8 tx_chan_width;
451
452
	u8 ht_protection;
	u8 non_GF_STA_present;
453
454
};

455
union iwl_qos_capabity {
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
	struct {
		u8 edca_count:4;	/* bit 0-3 */
		u8 q_ack:1;		/* bit 4 */
		u8 queue_request:1;	/* bit 5 */
		u8 txop_request:1;	/* bit 6 */
		u8 reserved:1;		/* bit 7 */
	} q_AP;
	struct {
		u8 acvo_APSD:1;		/* bit 0 */
		u8 acvi_APSD:1;		/* bit 1 */
		u8 ac_bk_APSD:1;	/* bit 2 */
		u8 ac_be_APSD:1;	/* bit 3 */
		u8 q_ack:1;		/* bit 4 */
		u8 max_len:2;		/* bit 5-6 */
		u8 more_data_ack:1;	/* bit 7 */
	} q_STA;
	u8 val;
};

/* QoS structures */
476
struct iwl_qos_info {
477
	int qos_active;
478
479
	union iwl_qos_capabity qos_cap;
	struct iwl_qosparam_cmd def_qos_parm;
480
481
482
483
484
};

#define STA_PS_STATUS_WAKE             0
#define STA_PS_STATUS_SLEEP            1

485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
struct iwl3945_tid_data {
	u16 seq_number;
};

struct iwl3945_hw_key {
	enum ieee80211_key_alg alg;
	int keylen;
	u8 key[32];
};

struct iwl3945_station_entry {
	struct iwl3945_addsta_cmd sta;
	struct iwl3945_tid_data tid[MAX_TID_COUNT];
	u8 used;
	u8 ps_status;
	struct iwl3945_hw_key keyinfo;
};

503
struct iwl_station_entry {
504
	struct iwl_addsta_cmd sta;
505
	struct iwl_tid_data tid[MAX_TID_COUNT];
506
507
	u8 used;
	u8 ps_status;
508
	struct iwl_hw_key keyinfo;
509
510
511
512
513
514
515
516
517
518
};

/* one for each uCode image (inst/data, boot/init/runtime) */
struct fw_desc {
	void *v_addr;		/* access by driver */
	dma_addr_t p_addr;	/* access by card's busmaster DMA */
	u32 len;		/* bytes */
};

/* uCode file layout */
519
struct iwl_ucode {
520
	__le32 ver;		/* major/minor/API/serial */
521
522
523
524
525
526
527
528
	__le32 inst_size;	/* bytes of runtime instructions */
	__le32 data_size;	/* bytes of runtime data */
	__le32 init_size;	/* bytes of initialization instructions */
	__le32 init_data_size;	/* bytes of initialization data */
	__le32 boot_size;	/* bytes of bootstrap instructions */
	u8 data[0];		/* data in same order as "size" elements */
};

Christoph Hellwig's avatar
Christoph Hellwig committed
529
struct iwl4965_ibss_seq {
530
531
532
533
534
535
536
	u8 mac[ETH_ALEN];
	u16 seq_num;
	u16 frag_num;
	unsigned long packet_time;
	struct list_head list;
};

537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
struct iwl_sensitivity_ranges {
	u16 min_nrg_cck;
	u16 max_nrg_cck;

	u16 nrg_th_cck;
	u16 nrg_th_ofdm;

	u16 auto_corr_min_ofdm;
	u16 auto_corr_min_ofdm_mrc;
	u16 auto_corr_min_ofdm_x1;
	u16 auto_corr_min_ofdm_mrc_x1;

	u16 auto_corr_max_ofdm;
	u16 auto_corr_max_ofdm_mrc;
	u16 auto_corr_max_ofdm_x1;
	u16 auto_corr_max_ofdm_mrc_x1;

	u16 auto_corr_max_cck;
	u16 auto_corr_max_cck_mrc;
	u16 auto_corr_min_cck;
	u16 auto_corr_min_cck_mrc;
};

560

561
562
563
564
#define KELVIN_TO_CELSIUS(x) ((x)-273)
#define CELSIUS_TO_KELVIN(x) ((x)+273)


565
/**
Tomas Winkler's avatar
Tomas Winkler committed
566
 * struct iwl_hw_params
567
 * @max_txq_num: Max # Tx queues supported
568
 * @dma_chnl_num: Number of Tx DMA/FIFO channels
569
 * @scd_bc_tbls_size: size of scheduler byte count tables
570
 * @tfd_size: TFD size
571
572
 * @tx/rx_chains_num: Number of TX/RX chains
 * @valid_tx/rx_ant: usable antennas
573
574
 * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
 * @max_rxq_log: Log-base-2 of max_rxq_size
575
 * @rx_buf_size: Rx buffer size
576
 * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
577
578
 * @max_stations:
 * @bcast_sta_id:
579
580
581
582
583
 * @fat_channel: is 40MHz width possible in band 2.4
 * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
 * @sw_crypto: 0 for hw, 1 for sw
 * @max_xxx_size: for ucode uses
 * @ct_kill_threshold: temperature threshold
584
 * @calib_init_cfg: setup initial calibrations for the hw
585
 * @struct iwl_sensitivity_ranges: range of sensitivity values
586
 */
Tomas Winkler's avatar
Tomas Winkler committed
587
struct iwl_hw_params {
588
589
	u8 max_txq_num;
	u8 dma_chnl_num;
590
	u16 scd_bc_tbls_size;
591
	u32 tfd_size;
592
593
594
595
	u8  tx_chains_num;
	u8  rx_chains_num;
	u8  valid_tx_ant;
	u8  valid_rx_ant;
596
	u16 max_rxq_size;
597
	u16 max_rxq_log;
598
	u32 rx_buf_size;
599
	u32 rx_wrt_ptr_reg;
600
	u32 max_pkt_size;
601
602
	u8  max_stations;
	u8  bcast_sta_id;
603
604
605
606
607
608
	u8 fat_channel;
	u8 sw_crypto;
	u32 max_inst_size;
	u32 max_data_size;
	u32 max_bsm_size;
	u32 ct_kill_threshold; /* value in hw-dependent units */
609
	u32 calib_init_cfg;
610
	const struct iwl_sensitivity_ranges *sens;
611
612
613
614
615
};


/******************************************************************************
 *
616
617
 * Functions implemented in core module which are forward declared here
 * for use by iwl-[4-5].c
618
 *
619
620
 * NOTE:  The implementation of these functions are not hardware specific
 * which is why they are in the core module files.
621
622
 *
 * Naming convention --
623
 * iwl_         <-- Is part of iwlwifi
624
 * iwlXXXX_     <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
Christoph Hellwig's avatar
Christoph Hellwig committed
625
626
 * iwl4965_bg_      <-- Called from work queue context
 * iwl4965_mac_     <-- mac80211 callback
627
628
 *
 ****************************************************************************/
629
630
extern void iwl_update_chain_flags(struct iwl_priv *priv);
extern int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
631
extern const u8 iwl_bcast_addr[ETH_ALEN];
632
extern int iwl_rxq_stop(struct iwl_priv *priv);
633
extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
634
extern int iwl_queue_space(const struct iwl_queue *q);
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
static inline int iwl_queue_used(const struct iwl_queue *q, int i)
{
	return q->write_ptr > q->read_ptr ?
		(i >= q->read_ptr && i < q->write_ptr) :
		!(i < q->read_ptr && i >= q->write_ptr);
}


static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
{
	/* This is for scan command, the big buffer at end of command array */
	if (is_huge)
		return q->n_window;	/* must be power of 2 */

	/* Otherwise, use normal size buffers */
	return index & (q->n_window - 1);
}


654
655
656
struct iwl_dma_ptr {
	dma_addr_t dma;
	void *addr;
657
658
659
	size_t size;
};

Winkler, Tomas's avatar
Winkler, Tomas committed
660
661
662
#define HT_SHORT_GI_20MHZ	(1 << 0)
#define HT_SHORT_GI_40MHZ	(1 << 1)

663
664
665
666
667
668
669
670
#define IWL_CHANNEL_WIDTH_20MHZ   0
#define IWL_CHANNEL_WIDTH_40MHZ   1

#define IWL_OPERATION_MODE_AUTO     0
#define IWL_OPERATION_MODE_HT_ONLY  1
#define IWL_OPERATION_MODE_MIXED    2
#define IWL_OPERATION_MODE_20MHZ    3

671
672
#define IWL_TX_CRC_SIZE 4
#define IWL_TX_DELIMITER_SIZE 4
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707

#define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000

/* Sensitivity and chain noise calibration */
#define INITIALIZATION_VALUE		0xFFFF
#define CAL_NUM_OF_BEACONS		20
#define MAXIMUM_ALLOWED_PATHLOSS	15

#define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3

#define MAX_FA_OFDM  50
#define MIN_FA_OFDM  5
#define MAX_FA_CCK   50
#define MIN_FA_CCK   5

#define AUTO_CORR_STEP_OFDM       1

#define AUTO_CORR_STEP_CCK     3
#define AUTO_CORR_MAX_TH_CCK   160

#define NRG_DIFF               2
#define NRG_STEP_CCK           2
#define NRG_MARGIN             8
#define MAX_NUMBER_CCK_NO_FA 100

#define AUTO_CORR_CCK_MIN_VAL_DEF    (125)

#define CHAIN_A             0
#define CHAIN_B             1
#define CHAIN_C             2
#define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
#define ALL_BAND_FILTER			0xFF00
#define IN_BAND_FILTER			0xFF
#define MIN_AVERAGE_NOISE_MAX_VALUE	0xFFFFFFFF

708
709
710
#define NRG_NUM_PREV_STAT_L     20
#define NUM_RX_CHAINS           3

Christoph Hellwig's avatar
Christoph Hellwig committed
711
enum iwl4965_false_alarm_state {
712
713
714
715
716
	IWL_FA_TOO_MANY = 0,
	IWL_FA_TOO_FEW = 1,
	IWL_FA_GOOD_RANGE = 2,
};

Christoph Hellwig's avatar
Christoph Hellwig committed
717
enum iwl4965_chain_noise_state {
718
	IWL_CHAIN_NOISE_ALIVE = 0,  /* must be 0 */
719
720
721
	IWL_CHAIN_NOISE_ACCUMULATE,
	IWL_CHAIN_NOISE_CALIBRATED,
	IWL_CHAIN_NOISE_DONE,
722
723
};

Christoph Hellwig's avatar
Christoph Hellwig committed
724
enum iwl4965_calib_enabled_state {
725
726
727
728
	IWL_CALIB_DISABLED = 0,  /* must be 0 */
	IWL_CALIB_ENABLED = 1,
};

729
730
731
732
733
734
735
736

/*
 * enum iwl_calib
 * defines the order in which results of initial calibrations
 * should be sent to the runtime uCode
 */
enum iwl_calib {
	IWL_CALIB_XTAL,
737
	IWL_CALIB_DC,
738
739
740
	IWL_CALIB_LO,
	IWL_CALIB_TX_IQ,
	IWL_CALIB_TX_IQ_PERD,
741
	IWL_CALIB_BASE_BAND,
742
743
744
	IWL_CALIB_MAX
};

745
746
747
748
/* Opaque calibration results */
struct iwl_calib_result {
	void *buf;
	size_t buf_len;
749
750
};

751
752
753
754
755
756
enum ucode_type {
	UCODE_NONE = 0,
	UCODE_INIT,
	UCODE_RT
};

757
/* Sensitivity calib data */
758
struct iwl_sensitivity_data {
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
	u32 auto_corr_ofdm;
	u32 auto_corr_ofdm_mrc;
	u32 auto_corr_ofdm_x1;
	u32 auto_corr_ofdm_mrc_x1;
	u32 auto_corr_cck;
	u32 auto_corr_cck_mrc;

	u32 last_bad_plcp_cnt_ofdm;
	u32 last_fa_cnt_ofdm;
	u32 last_bad_plcp_cnt_cck;
	u32 last_fa_cnt_cck;

	u32 nrg_curr_state;
	u32 nrg_prev_state;
	u32 nrg_value[10];
	u8  nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
	u32 nrg_silence_ref;
	u32 nrg_energy_idx;
	u32 nrg_silence_idx;
	u32 nrg_th_cck;
	s32 nrg_auto_corr_silence_diff;
	u32 num_in_cck_no_fa;
	u32 nrg_th_ofdm;
};

/* Chain noise (differential Rx gain) calib data */
785
struct iwl_chain_noise_data {
786
	u32 active_chains;
787
788
789
790
791
792
	u32 chain_noise_a;
	u32 chain_noise_b;
	u32 chain_noise_c;
	u32 chain_signal_a;
	u32 chain_signal_b;
	u32 chain_signal_c;
793
	u16 beacon_count;
794
795
796
	u8 disconn_array[NUM_RX_CHAINS];
	u8 delta_gain_code[NUM_RX_CHAINS];
	u8 radio_write;
797
	u8 state;
798
799
};

800
801
#define	EEPROM_SEM_TIMEOUT 10		/* milliseconds */
#define EEPROM_SEM_RETRY_LIMIT 1000	/* number of attempts (not time) */
802

803
804
805
806
807
808
809

enum {
	MEASUREMENT_READY = (1 << 0),
	MEASUREMENT_ACTIVE = (1 << 1),
};


810
811
#define IWL_MAX_NUM_QUEUES	20 /* FIXME: do dynamic allocation */

812
struct iwl_priv {
813
814
815
816
817

	/* ieee device used by generic ieee processing code */
	struct ieee80211_hw *hw;
	struct ieee80211_channel *ieee_channels;
	struct ieee80211_rate *ieee_rates;
Tomas Winkler's avatar
Tomas Winkler committed
818
	struct iwl_cfg *cfg;
819
820
821
822
823

	/* temporary frame storage list */
	struct list_head free_frames;
	int frames_count;

824
	enum ieee80211_band band;
825
826
	int alloc_rxb_skb;

827
	void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
828
				       struct iwl_rx_mem_buffer *rxb);
829

830
	struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
831

832
#if defined(CONFIG_IWLAGN_SPECTRUM_MEASUREMENT) || defined(CONFIG_IWL3945_SPECTRUM_MEASUREMENT)
833
	/* spectrum measurement report caching */
834
	struct iwl_spectrum_notification measure_report;
835
836
837
838
839
	u8 measurement_status;
#endif
	/* ucode beacon time */
	u32 ucode_beacon_time;

Christoph Hellwig's avatar
Christoph Hellwig committed
840
	/* we allocate array of iwl4965_channel_info for NIC's valid channels.
841
	 *    Access via channel # using indirect index array */
842
	struct iwl_channel_info *channel_info;	/* channel info array */
843
844
	u8 channel_count;	/* # of channels */

845
846
847
848
	/* each calibration channel group in the EEPROM has a derived
	 * clip setting for each rate. 3945 only.*/
	const struct iwl3945_clip_group clip39_groups[5];

849
850
851
852
	/* thermal calibration */
	s32 temperature;	/* degrees Kelvin */
	s32 last_temperature;

853
	/* init calibration results */
854
	struct iwl_calib_result calib_results[IWL_CALIB_MAX];
855

856
857
	/* Scan related variables */
	unsigned long last_scan_jiffies;
858
	unsigned long next_scan_jiffies;
859
860
861
	unsigned long scan_start;
	unsigned long scan_pass_start;
	unsigned long scan_start_tsf;
Winkler, Tomas's avatar
Winkler, Tomas committed
862
	void *scan;
863
864
865
866
	int scan_bands;
	int one_direct_scan;
	u8 direct_ssid_len;
	u8 direct_ssid[IW_ESSID_MAX_SIZE];
867
868
	u8 scan_tx_ant[IEEE80211_NUM_BANDS];
	u8 mgmt_tx_ant;
869
870
871
872
873
874
875
876
877
878
879

	/* spinlock */
	spinlock_t lock;	/* protect general shared data */
	spinlock_t hcmd_lock;	/* protect hcmd */
	struct mutex mutex;

	/* basic pci-network driver stuff */
	struct pci_dev *pci_dev;

	/* pci hardware address support */
	void __iomem *hw_base;
880
881
882
	u32  hw_rev;
	u32  hw_wa_rev;
	u8   rev_id;
883
884

	/* uCode images, save to reload in case of failure */
885
886
	u32 ucode_ver;			/* version of ucode, copy of
					   iwl_ucode.ver */
887
888
889
890
891
892
	struct fw_desc ucode_code;	/* runtime inst */
	struct fw_desc ucode_data;	/* runtime data original */
	struct fw_desc ucode_data_backup;	/* runtime data save/restore */
	struct fw_desc ucode_init;	/* initialization inst */
	struct fw_desc ucode_init_data;	/* initialization data */
	struct fw_desc ucode_boot;	/* bootstrap inst */
893
894
	enum ucode_type ucode_type;
	u8 ucode_write_complete;	/* the image write is complete */
895
896


897
	struct iwl_rxon_time_cmd rxon_timing;
898
899
900
901
902

	/* We declare this const so it can only be
	 * changed via explicit cast within the
	 * routines that actually update the physical
	 * hardware */
Gregory Greenman's avatar
Gregory Greenman committed
903
904
	const struct iwl_rxon_cmd active_rxon;
	struct iwl_rxon_cmd staging_rxon;
905
906

	int error_recovering;
Gregory Greenman's avatar
Gregory Greenman committed
907
	struct iwl_rxon_cmd recovery_rxon;
908
909
910

	/* 1st responses from initialize and runtime uCode images.
	 * 4965's initialize alive response contains some calibration data. */
911
912
	struct iwl_init_alive_resp card_alive_init;
	struct iwl_alive_resp card_alive;
913
#if defined(CONFIG_IWLWIFI_RFKILL) || defined(CONFIG_IWL3945_RFKILL)
914
	struct rfkill *rfkill;
915
#endif
916

917
#if defined(CONFIG_IWLWIFI_LEDS) || defined(CONFIG_IWL3945_LEDS)
Mohamed Abbas's avatar
Mohamed Abbas committed
918
919
920
921
	unsigned long last_blink_time;
	u8 last_blink_rate;
	u8 allow_blinking;
	u64 led_tpt;
922
923
#endif

924
925
926
927
928
929
930
931
#ifdef CONFIG_IWLWIFI_LEDS
	struct iwl_led led[IWL_LED_TRG_MAX];
#endif

#ifdef CONFIG_IWL3945_LEDS
	struct iwl3945_led led39[IWL_LED_TRG_MAX];
	unsigned int rxtxpackets;
#endif
932
933
934
935
936
	u16 active_rate;
	u16 active_rate_basic;

	u8 assoc_station_added;
	u8 start_calib;
937
938
	struct iwl_sensitivity_data sensitivity_data;
	struct iwl_chain_noise_data chain_noise_data;
939
940
	__le16 sensitivity_tbl[HD_TABLE_SIZE];

941
	struct iwl_ht_info current_ht_config;
942
943
944
945
946
947
948
949
950
951
952
	u8 last_phy_res[100];

	/* Rate scaling data */
	s8 data_retry_limit;
	u8 retry_rate;

	wait_queue_head_t wait_command_queue;

	int activity_timer_active;

	/* Rx and Tx DMA processing queues */
953
	struct iwl_rx_queue rxq;
954
	struct iwl_tx_queue txq[IWL_MAX_NUM_QUEUES];
955
	unsigned long txq_ctx_active_msk;
956
957
958
	struct iwl_dma_ptr  kw;	/* keep warm address */
	struct iwl_dma_ptr  scd_bc_tbls;

959
960
961
962
	u32 scd_base_addr;	/* scheduler sram base address */

	unsigned long status;

963
	int last_rx_rssi;	/* From Rx packet statistics */
964
965
	int last_rx_noise;	/* From beacon statistics */

966
967
968
969
970
971
	/* counts mgmt, ctl, and data packets */
	struct traffic_stats {
		u32 cnt;
		u64 bytes;
	} tx_stats[3], rx_stats[3];

972
	struct iwl_power_mgr power_data;
973

974
	struct iwl_notif_statistics statistics;
975
976
977
978
979
980
981
982
983
984
985
986
987
988
	unsigned long last_statistics_time;

	/* context information */
	u16 rates_mask;

	u32 power_mode;
	u32 antenna;
	u8 bssid[ETH_ALEN];
	u16 rts_threshold;
	u8 mac_addr[ETH_ALEN];

	/*station table variables */
	spinlock_t sta_lock;
	int num_stations;
989
	struct iwl_station_entry stations[IWL_STATION_COUNT];
990
991
992
	struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
	u8 default_wep_key;
	u8 key_mapping_key;
993
	unsigned long ucode_key_table;
994
995

	/* Indication if ieee80211_ops->open has been called */
996
	u8 is_open;
997
998
999
1000
1001
1002
1003
1004

	u8 mac80211_registered;

	/* Rx'd packet timing information */
	u32 last_beacon_time;
	u64 last_tsf;

	/* eeprom */
1005
1006
	u8 *eeprom;
	struct iwl_eeprom_calib_info *calib_info;
1007

1008
	enum nl80211_iftype iw_mode;
1009
1010
1011
1012

	struct sk_buff *ibss_beacon;

	/* Last Rx'd beacon timestamp */
1013
	u64 timestamp;
1014
	u16 beacon_int;
1015
	struct ieee80211_vif *vif;
1016

Winkler, Tomas's avatar
Winkler, Tomas committed
1017
	/*Added for 3945 */
1018
1019
1020
	void *shared_virt;
	dma_addr_t shared_phys;
	/*End*/
Tomas Winkler's avatar
Tomas Winkler committed
1021
	struct iwl_hw_params hw_params;
1022

1023

1024
1025
1026
1027
1028
	/* Current association information needed to configure the
	 * hardware */
	u16 assoc_id;
	u16 assoc_capability;

1029
	struct iwl_qos_info qos_data;
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047

	struct workqueue_struct *workqueue;

	struct work_struct up;
	struct work_struct restart;
	struct work_struct calibrated_work;
	struct work_struct scan_completed;
	struct work_struct rx_replenish;
	struct work_struct rf_kill;
	struct work_struct abort_scan;
	struct work_struct update_link_led;
	struct work_struct auth_work;
	struct work_struct report_work;
	struct work_struct request_scan;
	struct work_struct beacon_update;

	struct tasklet_struct irq_tasklet;

1048
	struct delayed_work set_power_save;
1049
1050
1051
	struct delayed_work init_alive_start;
	struct delayed_work alive_start;
	struct delayed_work scan_check;
1052
1053
1054

	/*For 3945 only*/
	struct delayed_work thermal_periodic;
1055
	struct delayed_work rfkill_poll;
1056

1057
1058
1059
	/* TX Power */
	s8 tx_power_user_lmt;
	s8 tx_power_channel_lmt;
1060
1061


1062
#if defined(CONFIG_IWLWIFI_DEBUG) || defined(CONFIG_IWL3945_DEBUG)
1063
	/* debugging info */
1064
	u32 debug_level;
1065
1066
	u32 framecnt_to_us;
	atomic_t restrict_refcnt;
1067
1068
1069
1070
1071
#ifdef CONFIG_IWLWIFI_DEBUGFS
	/* debugfs */
	struct iwl_debugfs *dbgfs;
#endif /* CONFIG_IWLWIFI_DEBUGFS */
#endif /* CONFIG_IWLWIFI_DEBUG */
1072
1073

	struct work_struct txpower_work;
1074
1075
	u32 disable_sens_cal;
	u32 disable_chain_noise_cal;
1076
	u32 disable_tx_power_cal;
1077
	struct work_struct run_time_calib_work;
1078
	struct timer_list statistics_periodic;
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094

	/*For 3945*/
#define IWL_DEFAULT_TX_POWER 0x0F
	/* We declare this const so it can only be
	 * changed via explicit cast within the
	 * routines that actually update the physical
	 * hardware */
	const struct iwl3945_rxon_cmd active39_rxon;
	struct iwl3945_rxon_cmd staging39_rxon;
	struct iwl3945_rxon_cmd recovery39_rxon;

	struct iwl3945_notif_statistics statistics_39;

	struct iwl3945_station_entry stations_39[IWL_STATION_COUNT];

	u32 sta_supp_rates;
1095
}; /*iwl_priv */
1096

1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
{
	set_bit(txq_id, &priv->txq_ctx_active_msk);
}

static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
{
	clear_bit(txq_id, &priv->txq_ctx_active_msk);
}

1107
#ifdef CONFIG_IWLWIFI_DEBUG
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
const char *iwl_get_tx_fail_reason(u32 status);
#else
static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
#endif


static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
							 int txq_id, int idx)
{
	if (priv->txq[txq_id].txb[idx].skb[0])
		return (struct ieee80211_hdr *)priv->txq[txq_id].
				txb[idx].skb[0]->data;
	return NULL;
}


1124
static inline int iwl_is_associated(struct iwl_priv *priv)
1125
1126
1127
1128
{
	return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
}

1129
static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1130
1131
1132
1133
1134
1135
{
	if (ch_info == NULL)
		return 0;
	return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
}

1136
static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1137
1138
1139
1140
{
	return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
}

1141
static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1142
{
1143
	return ch_info->band == IEEE80211_BAND_5GHZ;
1144
1145
}

1146
static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1147
{
1148
	return ch_info->band == IEEE80211_BAND_2GHZ;
1149
1150
}

1151
static inline int is_channel_passive(const struct iwl_channel_info *ch)
1152
1153
1154
1155
{
	return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
}

1156
static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1157
1158
1159
1160
{
	return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
}

1161
#endif				/* __iwl_dev_h__ */