1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26 /*
27 * Please use this file (iwl-dev.h) for driver implementation definitions.
28 * Please use iwl-commands.h for uCode API definitions.
29 * Please use iwl-4965-hw.h for hardware-related definitions.
30 */
31
32 #ifndef __iwl_dev_h__
33 #define __iwl_dev_h__
34
35 #include <linux/pci.h> /* for struct pci_device_id */
36 #include <linux/kernel.h>
37 #include <net/ieee80211_radiotap.h>
38
39 #include "iwl-eeprom.h"
40 #include "iwl-csr.h"
41 #include "iwl-prph.h"
42 #include "iwl-fh.h"
43 #include "iwl-debug.h"
44 #include "iwl-4965-hw.h"
45 #include "iwl-3945-hw.h"
46 #include "iwl-3945-led.h"
47 #include "iwl-led.h"
48 #include "iwl-power.h"
49 #include "iwl-agn-rs.h"
50
51 /* configuration for the iwl4965 */
52 extern struct iwl_cfg iwl4965_agn_cfg;
53 extern struct iwl_cfg iwl5300_agn_cfg;
54 extern struct iwl_cfg iwl5100_agn_cfg;
55 extern struct iwl_cfg iwl5350_agn_cfg;
56 extern struct iwl_cfg iwl5100_bg_cfg;
57 extern struct iwl_cfg iwl5100_abg_cfg;
58 extern struct iwl_cfg iwl5150_agn_cfg;
59 extern struct iwl_cfg iwl6000_2ag_cfg;
60 extern struct iwl_cfg iwl6000_2agn_cfg;
61 extern struct iwl_cfg iwl6000_3agn_cfg;
62 extern struct iwl_cfg iwl6050_2agn_cfg;
63 extern struct iwl_cfg iwl6050_3agn_cfg;
64 extern struct iwl_cfg iwl1000_bgn_cfg;
65
66 /* shared structures from iwl-5000.c */
67 extern struct iwl_mod_params iwl50_mod_params;
68 extern struct iwl_ops iwl5000_ops;
69 extern struct iwl_ucode_ops iwl5000_ucode;
70 extern struct iwl_lib_ops iwl5000_lib;
71 extern struct iwl_hcmd_ops iwl5000_hcmd;
72 extern struct iwl_hcmd_utils_ops iwl5000_hcmd_utils;
73
74 /* shared functions from iwl-5000.c */
75 extern u16 iwl5000_get_hcmd_size(u8 cmd_id, u16 len);
76 extern u16 iwl5000_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd,
77 u8 *data);
78 extern void iwl5000_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
79 __le32 *tx_flags);
80 extern int iwl5000_calc_rssi(struct iwl_priv *priv,
81 struct iwl_rx_phy_res *rx_resp);
82
83 /* CT-KILL constants */
84 #define CT_KILL_THRESHOLD 110 /* in Celsius */
85
86 /* Default noise level to report when noise measurement is not available.
87 * This may be because we're:
88 * 1) Not associated (4965, no beacon statistics being sent to driver)
89 * 2) Scanning (noise measurement does not apply to associated channel)
90 * 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
91 * Use default noise value of -127 ... this is below the range of measurable
92 * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
93 * Also, -127 works better than 0 when averaging frames with/without
94 * noise info (e.g. averaging might be done in app); measured dBm values are
95 * always negative ... using a negative value as the default keeps all
96 * averages within an s8's (used in some apps) range of negative values. */
97 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
98
99 /*
100 * RTS threshold here is total size [2347] minus 4 FCS bytes
101 * Per spec:
102 * a value of 0 means RTS on all data/management packets
103 * a value > max MSDU size means no RTS
104 * else RTS for data/management frames where MPDU is larger
105 * than RTS value.
106 */
107 #define DEFAULT_RTS_THRESHOLD 2347U
108 #define MIN_RTS_THRESHOLD 0U
109 #define MAX_RTS_THRESHOLD 2347U
110 #define MAX_MSDU_SIZE 2304U
111 #define MAX_MPDU_SIZE 2346U
112 #define DEFAULT_BEACON_INTERVAL 100U
113 #define DEFAULT_SHORT_RETRY_LIMIT 7U
114 #define DEFAULT_LONG_RETRY_LIMIT 4U
115
116 struct iwl_rx_mem_buffer {
117 dma_addr_t real_dma_addr;
118 dma_addr_t aligned_dma_addr;
119 struct sk_buff *skb;
120 struct list_head list;
121 };
122
123 /*
124 * Generic queue structure
125 *
126 * Contains common data for Rx and Tx queues
127 */
128 struct iwl_queue {
129 int n_bd; /* number of BDs in this queue */
130 int write_ptr; /* 1-st empty entry (index) host_w*/
131 int read_ptr; /* last used entry (index) host_r*/
132 dma_addr_t dma_addr; /* physical addr for BD's */
133 int n_window; /* safe queue window */
134 u32 id;
135 int low_mark; /* low watermark, resume queue if free
136 * space more than this */
137 int high_mark; /* high watermark, stop queue if free
138 * space less than this */
139 } __attribute__ ((packed));
140
141 /* One for each TFD */
142 struct iwl_tx_info {
143 struct sk_buff *skb[IWL_NUM_OF_TBS - 1];
144 };
145
146 /**
147 * struct iwl_tx_queue - Tx Queue for DMA
148 * @q: generic Rx/Tx queue descriptor
149 * @bd: base of circular buffer of TFDs
150 * @cmd: array of command/Tx buffers
151 * @dma_addr_cmd: physical address of cmd/tx buffer array
152 * @txb: array of per-TFD driver data
153 * @need_update: indicates need to update read/write index
154 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
155 *
156 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
157 * descriptors) and required locking structures.
158 */
159 #define TFD_TX_CMD_SLOTS 256
160 #define TFD_CMD_SLOTS 32
161
162 struct iwl_tx_queue {
163 struct iwl_queue q;
164 void *tfds;
165 struct iwl_cmd *cmd[TFD_TX_CMD_SLOTS];
166 struct iwl_tx_info *txb;
167 u8 need_update;
168 u8 sched_retry;
169 u8 active;
170 u8 swq_id;
171 };
172
173 #define IWL_NUM_SCAN_RATES (2)
174
175 struct iwl4965_channel_tgd_info {
176 u8 type;
177 s8 max_power;
178 };
179
180 struct iwl4965_channel_tgh_info {
181 s64 last_radar_time;
182 };
183
184 #define IWL4965_MAX_RATE (33)
185
186 struct iwl3945_clip_group {
187 /* maximum power level to prevent clipping for each rate, derived by
188 * us from this band's saturation power in EEPROM */
189 const s8 clip_powers[IWL_MAX_RATES];
190 };
191
192 /* current Tx power values to use, one for each rate for each channel.
193 * requested power is limited by:
194 * -- regulatory EEPROM limits for this channel
195 * -- hardware capabilities (clip-powers)
196 * -- spectrum management
197 * -- user preference (e.g. iwconfig)
198 * when requested power is set, base power index must also be set. */
199 struct iwl3945_channel_power_info {
200 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
201 s8 power_table_index; /* actual (compenst'd) index into gain table */
202 s8 base_power_index; /* gain index for power at factory temp. */
203 s8 requested_power; /* power (dBm) requested for this chnl/rate */
204 };
205
206 /* current scan Tx power values to use, one for each scan rate for each
207 * channel. */
208 struct iwl3945_scan_power_info {
209 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
210 s8 power_table_index; /* actual (compenst'd) index into gain table */
211 s8 requested_power; /* scan pwr (dBm) requested for chnl/rate */
212 };
213
214 /*
215 * One for each channel, holds all channel setup data
216 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
217 * with one another!
218 */
219 struct iwl_channel_info {
220 struct iwl4965_channel_tgd_info tgd;
221 struct iwl4965_channel_tgh_info tgh;
222 struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */
223 struct iwl_eeprom_channel fat_eeprom; /* EEPROM regulatory limit for
224 * FAT channel */
225
226 u8 channel; /* channel number */
227 u8 flags; /* flags copied from EEPROM */
228 s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
229 s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
230 s8 min_power; /* always 0 */
231 s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
232
233 u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */
234 u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */
235 enum ieee80211_band band;
236
237 /* FAT channel info */
238 s8 fat_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
239 s8 fat_curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) */
240 s8 fat_min_power; /* always 0 */
241 s8 fat_scan_power; /* (dBm) eeprom, direct scans, any rate */
242 u8 fat_flags; /* flags copied from EEPROM */
243 u8 fat_extension_channel; /* HT_IE_EXT_CHANNEL_* */
244
245 /* Radio/DSP gain settings for each "normal" data Tx rate.
246 * These include, in addition to RF and DSP gain, a few fields for
247 * remembering/modifying gain settings (indexes). */
248 struct iwl3945_channel_power_info power_info[IWL4965_MAX_RATE];
249
250 /* Radio/DSP gain settings for each scan rate, for directed scans. */
251 struct iwl3945_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
252 };
253
254 #define IWL_TX_FIFO_AC0 0
255 #define IWL_TX_FIFO_AC1 1
256 #define IWL_TX_FIFO_AC2 2
257 #define IWL_TX_FIFO_AC3 3
258 #define IWL_TX_FIFO_HCCA_1 5
259 #define IWL_TX_FIFO_HCCA_2 6
260 #define IWL_TX_FIFO_NONE 7
261
262 /* Minimum number of queues. MAX_NUM is defined in hw specific files.
263 * Set the minimum to accommodate the 4 standard TX queues, 1 command
264 * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
265 #define IWL_MIN_NUM_QUEUES 10
266
267 /* Power management (not Tx power) structures */
268
269 enum iwl_pwr_src {
270 IWL_PWR_SRC_VMAIN,
271 IWL_PWR_SRC_VAUX,
272 };
273
274 #define IEEE80211_DATA_LEN 2304
275 #define IEEE80211_4ADDR_LEN 30
276 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
277 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
278
279 struct iwl_frame {
280 union {
281 struct ieee80211_hdr frame;
282 struct iwl_tx_beacon_cmd beacon;
283 u8 raw[IEEE80211_FRAME_LEN];
284 u8 cmd[360];
285 } u;
286 struct list_head list;
287 };
288
289 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
290 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
291 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
292
293 enum {
294 CMD_SYNC = 0,
295 CMD_SIZE_NORMAL = 0,
296 CMD_NO_SKB = 0,
297 CMD_SIZE_HUGE = (1 << 0),
298 CMD_ASYNC = (1 << 1),
299 CMD_WANT_SKB = (1 << 2),
300 };
301
302 struct iwl_cmd;
303 struct iwl_priv;
304
305 struct iwl_cmd_meta {
306 struct iwl_cmd_meta *source;
307 union {
308 struct sk_buff *skb;
309 int (*callback)(struct iwl_priv *priv,
310 struct iwl_cmd *cmd, struct sk_buff *skb);
311 } __attribute__ ((packed)) u;
312
313 /* The CMD_SIZE_HUGE flag bit indicates that the command
314 * structure is stored at the end of the shared queue memory. */
315 u32 flags;
316 DECLARE_PCI_UNMAP_ADDR(mapping)
317 DECLARE_PCI_UNMAP_LEN(len)
318 } __attribute__ ((packed));
319
320 #define IWL_CMD_MAX_PAYLOAD 320
321
322 /**
323 * struct iwl_cmd
324 *
325 * For allocation of the command and tx queues, this establishes the overall
326 * size of the largest command we send to uCode, except for a scan command
327 * (which is relatively huge; space is allocated separately).
328 */
329 struct iwl_cmd {
330 struct iwl_cmd_meta meta; /* driver data */
331 struct iwl_cmd_header hdr; /* uCode API */
332 union {
333 u32 flags;
334 u8 val8;
335 u16 val16;
336 u32 val32;
337 struct iwl_tx_cmd tx;
338 u8 payload[IWL_CMD_MAX_PAYLOAD];
339 } __attribute__ ((packed)) cmd;
340 } __attribute__ ((packed));
341
342
343 struct iwl_host_cmd {
344 u8 id;
345 u16 len;
346 struct iwl_cmd_meta meta;
347 const void *data;
348 };
349
350 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_cmd) - \
351 sizeof(struct iwl_cmd_meta))
352
353 /*
354 * RX related structures and functions
355 */
356 #define RX_FREE_BUFFERS 64
357 #define RX_LOW_WATERMARK 8
358
359 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
360 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
361 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
362
363 /**
364 * struct iwl_rx_queue - Rx queue
365 * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
366 * @dma_addr: bus address of buffer of receive buffer descriptors (rbd)
367 * @read: Shared index to newest available Rx buffer
368 * @write: Shared index to oldest written Rx packet
369 * @free_count: Number of pre-allocated buffers in rx_free
370 * @rx_free: list of free SKBs for use
371 * @rx_used: List of Rx buffers with no SKB
372 * @need_update: flag to indicate we need to update read/write index
373 * @rb_stts: driver's pointer to receive buffer status
374 * @rb_stts_dma: bus address of receive buffer status
375 *
376 * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
377 */
378 struct iwl_rx_queue {
379 __le32 *bd;
380 dma_addr_t dma_addr;
381 struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
382 struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
383 u32 read;
384 u32 write;
385 u32 free_count;
386 u32 write_actual;
387 struct list_head rx_free;
388 struct list_head rx_used;
389 int need_update;
390 struct iwl_rb_status *rb_stts;
391 dma_addr_t rb_stts_dma;
392 spinlock_t lock;
393 };
394
395 #define IWL_SUPPORTED_RATES_IE_LEN 8
396
397 #define MAX_TID_COUNT 9
398
399 #define IWL_INVALID_RATE 0xFF
400 #define IWL_INVALID_VALUE -1
401
402 /**
403 * struct iwl_ht_agg -- aggregation status while waiting for block-ack
404 * @txq_id: Tx queue used for Tx attempt
405 * @frame_count: # frames attempted by Tx command
406 * @wait_for_ba: Expect block-ack before next Tx reply
407 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
408 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
409 * @bitmap1: High order, one bit for each frame pending ACK in Tx window
410 * @rate_n_flags: Rate at which Tx was attempted
411 *
412 * If REPLY_TX indicates that aggregation was attempted, driver must wait
413 * for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
414 * until block ack arrives.
415 */
416 struct iwl_ht_agg {
417 u16 txq_id;
418 u16 frame_count;
419 u16 wait_for_ba;
420 u16 start_idx;
421 u64 bitmap;
422 u32 rate_n_flags;
423 #define IWL_AGG_OFF 0
424 #define IWL_AGG_ON 1
425 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
426 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
427 u8 state;
428 };
429
430
431 struct iwl_tid_data {
432 u16 seq_number;
433 u16 tfds_in_queue;
434 struct iwl_ht_agg agg;
435 };
436
437 struct iwl_hw_key {
438 enum ieee80211_key_alg alg;
439 int keylen;
440 u8 keyidx;
441 u8 key[32];
442 };
443
444 union iwl_ht_rate_supp {
445 u16 rates;
446 struct {
447 u8 siso_rate;
448 u8 mimo_rate;
449 };
450 };
451
452 #define CFG_HT_RX_AMPDU_FACTOR_DEF (0x3)
453 #define CFG_HT_MPDU_DENSITY_2USEC (0x5)
454 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
455
456 struct iwl_ht_info {
457 /* self configuration data */
458 u8 is_ht;
459 u8 supported_chan_width;
460 u8 sm_ps;
461 u8 is_green_field;
462 u8 sgf; /* HT_SHORT_GI_* short guard interval */
463 u8 max_amsdu_size;
464 u8 ampdu_factor;
465 u8 mpdu_density;
466 struct ieee80211_mcs_info mcs;
467 /* BSS related data */
468 u8 extension_chan_offset;
469 u8 tx_chan_width;
470 u8 ht_protection;
471 u8 non_GF_STA_present;
472 };
473
474 union iwl_qos_capabity {
475 struct {
476 u8 edca_count:4; /* bit 0-3 */
477 u8 q_ack:1; /* bit 4 */
478 u8 queue_request:1; /* bit 5 */
479 u8 txop_request:1; /* bit 6 */
480 u8 reserved:1; /* bit 7 */
481 } q_AP;
482 struct {
483 u8 acvo_APSD:1; /* bit 0 */
484 u8 acvi_APSD:1; /* bit 1 */
485 u8 ac_bk_APSD:1; /* bit 2 */
486 u8 ac_be_APSD:1; /* bit 3 */
487 u8 q_ack:1; /* bit 4 */
488 u8 max_len:2; /* bit 5-6 */
489 u8 more_data_ack:1; /* bit 7 */
490 } q_STA;
491 u8 val;
492 };
493
494 /* QoS structures */
495 struct iwl_qos_info {
496 int qos_active;
497 union iwl_qos_capabity qos_cap;
498 struct iwl_qosparam_cmd def_qos_parm;
499 };
500
501 #define STA_PS_STATUS_WAKE 0
502 #define STA_PS_STATUS_SLEEP 1
503
504
505 struct iwl3945_station_entry {
506 struct iwl3945_addsta_cmd sta;
507 struct iwl_tid_data tid[MAX_TID_COUNT];
508 u8 used;
509 u8 ps_status;
510 struct iwl_hw_key keyinfo;
511 };
512
513 struct iwl_station_entry {
514 struct iwl_addsta_cmd sta;
515 struct iwl_tid_data tid[MAX_TID_COUNT];
516 u8 used;
517 u8 ps_status;
518 struct iwl_hw_key keyinfo;
519 };
520
521 /* one for each uCode image (inst/data, boot/init/runtime) */
522 struct fw_desc {
523 void *v_addr; /* access by driver */
524 dma_addr_t p_addr; /* access by card's busmaster DMA */
525 u32 len; /* bytes */
526 };
527
528 /* uCode file layout */
529 struct iwl_ucode_header {
530 __le32 ver; /* major/minor/API/serial */
531 union {
532 struct {
533 __le32 inst_size; /* bytes of runtime code */
534 __le32 data_size; /* bytes of runtime data */
535 __le32 init_size; /* bytes of init code */
536 __le32 init_data_size; /* bytes of init data */
537 __le32 boot_size; /* bytes of bootstrap code */
538 u8 data[0]; /* in same order as sizes */
539 } v1;
540 struct {
541 __le32 build; /* build number */
542 __le32 inst_size; /* bytes of runtime code */
543 __le32 data_size; /* bytes of runtime data */
544 __le32 init_size; /* bytes of init code */
545 __le32 init_data_size; /* bytes of init data */
546 __le32 boot_size; /* bytes of bootstrap code */
547 u8 data[0]; /* in same order as sizes */
548 } v2;
549 } u;
550 };
551 #define UCODE_HEADER_SIZE(ver) ((ver) == 1 ? 24 : 28)
552
553 struct iwl4965_ibss_seq {
554 u8 mac[ETH_ALEN];
555 u16 seq_num;
556 u16 frag_num;
557 unsigned long packet_time;
558 struct list_head list;
559 };
560
561 struct iwl_sensitivity_ranges {
562 u16 min_nrg_cck;
563 u16 max_nrg_cck;
564
565 u16 nrg_th_cck;
566 u16 nrg_th_ofdm;
567
568 u16 auto_corr_min_ofdm;
569 u16 auto_corr_min_ofdm_mrc;
570 u16 auto_corr_min_ofdm_x1;
571 u16 auto_corr_min_ofdm_mrc_x1;
572
573 u16 auto_corr_max_ofdm;
574 u16 auto_corr_max_ofdm_mrc;
575 u16 auto_corr_max_ofdm_x1;
576 u16 auto_corr_max_ofdm_mrc_x1;
577
578 u16 auto_corr_max_cck;
579 u16 auto_corr_max_cck_mrc;
580 u16 auto_corr_min_cck;
581 u16 auto_corr_min_cck_mrc;
582 };
583
584
585 #define KELVIN_TO_CELSIUS(x) ((x)-273)
586 #define CELSIUS_TO_KELVIN(x) ((x)+273)
587
588
589 /**
590 * struct iwl_hw_params
591 * @max_txq_num: Max # Tx queues supported
592 * @dma_chnl_num: Number of Tx DMA/FIFO channels
593 * @scd_bc_tbls_size: size of scheduler byte count tables
594 * @tfd_size: TFD size
595 * @tx/rx_chains_num: Number of TX/RX chains
596 * @valid_tx/rx_ant: usable antennas
597 * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
598 * @max_rxq_log: Log-base-2 of max_rxq_size
599 * @rx_buf_size: Rx buffer size
600 * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
601 * @max_stations:
602 * @bcast_sta_id:
603 * @fat_channel: is 40MHz width possible in band 2.4
604 * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
605 * @sw_crypto: 0 for hw, 1 for sw
606 * @max_xxx_size: for ucode uses
607 * @ct_kill_threshold: temperature threshold
608 * @calib_init_cfg: setup initial calibrations for the hw
609 * @struct iwl_sensitivity_ranges: range of sensitivity values
610 */
611 struct iwl_hw_params {
612 u8 max_txq_num;
613 u8 dma_chnl_num;
614 u16 scd_bc_tbls_size;
615 u32 tfd_size;
616 u8 tx_chains_num;
617 u8 rx_chains_num;
618 u8 valid_tx_ant;
619 u8 valid_rx_ant;
620 u16 max_rxq_size;
621 u16 max_rxq_log;
622 u32 rx_buf_size;
623 u32 rx_wrt_ptr_reg;
624 u32 max_pkt_size;
625 u8 max_stations;
626 u8 bcast_sta_id;
627 u8 fat_channel;
628 u8 sw_crypto;
629 u32 max_inst_size;
630 u32 max_data_size;
631 u32 max_bsm_size;
632 u32 ct_kill_threshold; /* value in hw-dependent units */
633 u32 calib_init_cfg;
634 const struct iwl_sensitivity_ranges *sens;
635 };
636
637
638 /******************************************************************************
639 *
640 * Functions implemented in core module which are forward declared here
641 * for use by iwl-[4-5].c
642 *
643 * NOTE: The implementation of these functions are not hardware specific
644 * which is why they are in the core module files.
645 *
646 * Naming convention --
647 * iwl_ <-- Is part of iwlwifi
648 * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
649 * iwl4965_bg_ <-- Called from work queue context
650 * iwl4965_mac_ <-- mac80211 callback
651 *
652 ****************************************************************************/
653 extern void iwl_update_chain_flags(struct iwl_priv *priv);
654 extern int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
655 extern const u8 iwl_bcast_addr[ETH_ALEN];
656 extern int iwl_rxq_stop(struct iwl_priv *priv);
657 extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
658 extern int iwl_queue_space(const struct iwl_queue *q);
659 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
660 {
661 return q->write_ptr > q->read_ptr ?
662 (i >= q->read_ptr && i < q->write_ptr) :
663 !(i < q->read_ptr && i >= q->write_ptr);
664 }
665
666
667 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
668 {
669 /* This is for scan command, the big buffer at end of command array */
670 if (is_huge)
671 return q->n_window; /* must be power of 2 */
672
673 /* Otherwise, use normal size buffers */
674 return index & (q->n_window - 1);
675 }
676
677
678 struct iwl_dma_ptr {
679 dma_addr_t dma;
680 void *addr;
681 size_t size;
682 };
683
684 #define HT_SHORT_GI_20MHZ (1 << 0)
685 #define HT_SHORT_GI_40MHZ (1 << 1)
686
687 #define IWL_CHANNEL_WIDTH_20MHZ 0
688 #define IWL_CHANNEL_WIDTH_40MHZ 1
689
690 #define IWL_OPERATION_MODE_AUTO 0
691 #define IWL_OPERATION_MODE_HT_ONLY 1
692 #define IWL_OPERATION_MODE_MIXED 2
693 #define IWL_OPERATION_MODE_20MHZ 3
694
695 #define IWL_TX_CRC_SIZE 4
696 #define IWL_TX_DELIMITER_SIZE 4
697
698 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
699
700 /* Sensitivity and chain noise calibration */
701 #define INITIALIZATION_VALUE 0xFFFF
702 #define CAL_NUM_OF_BEACONS 20
703 #define MAXIMUM_ALLOWED_PATHLOSS 15
704
705 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
706
707 #define MAX_FA_OFDM 50
708 #define MIN_FA_OFDM 5
709 #define MAX_FA_CCK 50
710 #define MIN_FA_CCK 5
711
712 #define AUTO_CORR_STEP_OFDM 1
713
714 #define AUTO_CORR_STEP_CCK 3
715 #define AUTO_CORR_MAX_TH_CCK 160
716
717 #define NRG_DIFF 2
718 #define NRG_STEP_CCK 2
719 #define NRG_MARGIN 8
720 #define MAX_NUMBER_CCK_NO_FA 100
721
722 #define AUTO_CORR_CCK_MIN_VAL_DEF (125)
723
724 #define CHAIN_A 0
725 #define CHAIN_B 1
726 #define CHAIN_C 2
727 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
728 #define ALL_BAND_FILTER 0xFF00
729 #define IN_BAND_FILTER 0xFF
730 #define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF
731
732 #define NRG_NUM_PREV_STAT_L 20
733 #define NUM_RX_CHAINS 3
734
735 enum iwl4965_false_alarm_state {
736 IWL_FA_TOO_MANY = 0,
737 IWL_FA_TOO_FEW = 1,
738 IWL_FA_GOOD_RANGE = 2,
739 };
740
741 enum iwl4965_chain_noise_state {
742 IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
743 IWL_CHAIN_NOISE_ACCUMULATE,
744 IWL_CHAIN_NOISE_CALIBRATED,
745 IWL_CHAIN_NOISE_DONE,
746 };
747
748 enum iwl4965_calib_enabled_state {
749 IWL_CALIB_DISABLED = 0, /* must be 0 */
750 IWL_CALIB_ENABLED = 1,
751 };
752
753
754 /*
755 * enum iwl_calib
756 * defines the order in which results of initial calibrations
757 * should be sent to the runtime uCode
758 */
759 enum iwl_calib {
760 IWL_CALIB_XTAL,
761 IWL_CALIB_DC,
762 IWL_CALIB_LO,
763 IWL_CALIB_TX_IQ,
764 IWL_CALIB_TX_IQ_PERD,
765 IWL_CALIB_BASE_BAND,
766 IWL_CALIB_MAX
767 };
768
769 /* Opaque calibration results */
770 struct iwl_calib_result {
771 void *buf;
772 size_t buf_len;
773 };
774
775 enum ucode_type {
776 UCODE_NONE = 0,
777 UCODE_INIT,
778 UCODE_RT
779 };
780
781 /* Sensitivity calib data */
782 struct iwl_sensitivity_data {
783 u32 auto_corr_ofdm;
784 u32 auto_corr_ofdm_mrc;
785 u32 auto_corr_ofdm_x1;
786 u32 auto_corr_ofdm_mrc_x1;
787 u32 auto_corr_cck;
788 u32 auto_corr_cck_mrc;
789
790 u32 last_bad_plcp_cnt_ofdm;
791 u32 last_fa_cnt_ofdm;
792 u32 last_bad_plcp_cnt_cck;
793 u32 last_fa_cnt_cck;
794
795 u32 nrg_curr_state;
796 u32 nrg_prev_state;
797 u32 nrg_value[10];
798 u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
799 u32 nrg_silence_ref;
800 u32 nrg_energy_idx;
801 u32 nrg_silence_idx;
802 u32 nrg_th_cck;
803 s32 nrg_auto_corr_silence_diff;
804 u32 num_in_cck_no_fa;
805 u32 nrg_th_ofdm;
806 };
807
808 /* Chain noise (differential Rx gain) calib data */
809 struct iwl_chain_noise_data {
810 u32 active_chains;
811 u32 chain_noise_a;
812 u32 chain_noise_b;
813 u32 chain_noise_c;
814 u32 chain_signal_a;
815 u32 chain_signal_b;
816 u32 chain_signal_c;
817 u16 beacon_count;
818 u8 disconn_array[NUM_RX_CHAINS];
819 u8 delta_gain_code[NUM_RX_CHAINS];
820 u8 radio_write;
821 u8 state;
822 };
823
824 #define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
825 #define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
826
827
828 enum {
829 MEASUREMENT_READY = (1 << 0),
830 MEASUREMENT_ACTIVE = (1 << 1),
831 };
832
833 enum iwl_nvm_type {
834 NVM_DEVICE_TYPE_EEPROM = 0,
835 NVM_DEVICE_TYPE_OTP,
836 };
837
838 /*
839 * Two types of OTP memory access modes
840 * IWL_OTP_ACCESS_ABSOLUTE - absolute address mode,
841 * based on physical memory addressing
842 * IWL_OTP_ACCESS_RELATIVE - relative address mode,
843 * based on logical memory addressing
844 */
845 enum iwl_access_mode {
846 IWL_OTP_ACCESS_ABSOLUTE,
847 IWL_OTP_ACCESS_RELATIVE,
848 };
849
850 /* interrupt statistics */
851 struct isr_statistics {
852 u32 hw;
853 u32 sw;
854 u32 sw_err;
855 u32 sch;
856 u32 alive;
857 u32 rfkill;
858 u32 ctkill;
859 u32 wakeup;
860 u32 rx;
861 u32 rx_handlers[REPLY_MAX];
862 u32 tx;
863 u32 unhandled;
864 };
865
866 #define IWL_MAX_NUM_QUEUES 20 /* FIXME: do dynamic allocation */
867
868 struct iwl_priv {
869
870 /* ieee device used by generic ieee processing code */
871 struct ieee80211_hw *hw;
872 struct ieee80211_channel *ieee_channels;
873 struct ieee80211_rate *ieee_rates;
874 struct iwl_cfg *cfg;
875
876 /* temporary frame storage list */
877 struct list_head free_frames;
878 int frames_count;
879
880 enum ieee80211_band band;
881 int alloc_rxb_skb;
882
883 void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
884 struct iwl_rx_mem_buffer *rxb);
885
886 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
887
888 #if defined(CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT) || defined(CONFIG_IWL3945_SPECTRUM_MEASUREMENT)
889 /* spectrum measurement report caching */
890 struct iwl_spectrum_notification measure_report;
891 u8 measurement_status;
892 #endif
893 /* ucode beacon time */
894 u32 ucode_beacon_time;
895
896 /* we allocate array of iwl4965_channel_info for NIC's valid channels.
897 * Access via channel # using indirect index array */
898 struct iwl_channel_info *channel_info; /* channel info array */
899 u8 channel_count; /* # of channels */
900
901 /* each calibration channel group in the EEPROM has a derived
902 * clip setting for each rate. 3945 only.*/
903 const struct iwl3945_clip_group clip39_groups[5];
904
905 /* thermal calibration */
906 s32 temperature; /* degrees Kelvin */
907 s32 last_temperature;
908
909 /* init calibration results */
910 struct iwl_calib_result calib_results[IWL_CALIB_MAX];
911
912 /* Scan related variables */
913 unsigned long last_scan_jiffies;
914 unsigned long next_scan_jiffies;
915 unsigned long scan_start;
916 unsigned long scan_pass_start;
917 unsigned long scan_start_tsf;
918 void *scan;
919 int scan_bands;
920 struct cfg80211_scan_request *scan_request;
921 u8 scan_tx_ant[IEEE80211_NUM_BANDS];
922 u8 mgmt_tx_ant;
923
924 /* spinlock */
925 spinlock_t lock; /* protect general shared data */
926 spinlock_t hcmd_lock; /* protect hcmd */
927 spinlock_t reg_lock; /* protect hw register access */
928 struct mutex mutex;
929
930 /* basic pci-network driver stuff */
931 struct pci_dev *pci_dev;
932
933 /* pci hardware address support */
934 void __iomem *hw_base;
935 u32 hw_rev;
936 u32 hw_wa_rev;
937 u8 rev_id;
938
939 /* uCode images, save to reload in case of failure */
940 u32 ucode_ver; /* version of ucode, copy of
941 iwl_ucode.ver */
942 struct fw_desc ucode_code; /* runtime inst */
943 struct fw_desc ucode_data; /* runtime data original */
944 struct fw_desc ucode_data_backup; /* runtime data save/restore */
945 struct fw_desc ucode_init; /* initialization inst */
946 struct fw_desc ucode_init_data; /* initialization data */
947 struct fw_desc ucode_boot; /* bootstrap inst */
948 enum ucode_type ucode_type;
949 u8 ucode_write_complete; /* the image write is complete */
950
951
952 struct iwl_rxon_time_cmd rxon_timing;
953
954 /* We declare this const so it can only be
955 * changed via explicit cast within the
956 * routines that actually update the physical
957 * hardware */
958 const struct iwl_rxon_cmd active_rxon;
959 struct iwl_rxon_cmd staging_rxon;
960
961 struct iwl_rxon_cmd recovery_rxon;
962
963 /* 1st responses from initialize and runtime uCode images.
964 * 4965's initialize alive response contains some calibration data. */
965 struct iwl_init_alive_resp card_alive_init;
966 struct iwl_alive_resp card_alive;
967
968 #ifdef CONFIG_IWLWIFI_LEDS
969 unsigned long last_blink_time;
970 u8 last_blink_rate;
971 u8 allow_blinking;
972 u64 led_tpt;
973 struct iwl_led led[IWL_LED_TRG_MAX];
974 unsigned int rxtxpackets;
975 #endif
976 u16 active_rate;
977 u16 active_rate_basic;
978
979 u8 assoc_station_added;
980 u8 start_calib;
981 struct iwl_sensitivity_data sensitivity_data;
982 struct iwl_chain_noise_data chain_noise_data;
983 __le16 sensitivity_tbl[HD_TABLE_SIZE];
984
985 struct iwl_ht_info current_ht_config;
986 u8 last_phy_res[100];
987
988 /* Rate scaling data */
989 s8 data_retry_limit;
990 u8 retry_rate;
991
992 wait_queue_head_t wait_command_queue;
993
994 int activity_timer_active;
995
996 /* Rx and Tx DMA processing queues */
997 struct iwl_rx_queue rxq;
998 struct iwl_tx_queue txq[IWL_MAX_NUM_QUEUES];
999 unsigned long txq_ctx_active_msk;
1000 struct iwl_dma_ptr kw; /* keep warm address */
1001 struct iwl_dma_ptr scd_bc_tbls;
1002
1003 u32 scd_base_addr; /* scheduler sram base address */
1004
1005 unsigned long status;
1006
1007 int last_rx_rssi; /* From Rx packet statistics */
1008 int last_rx_noise; /* From beacon statistics */
1009
1010 /* counts mgmt, ctl, and data packets */
1011 struct traffic_stats {
1012 u32 cnt;
1013 u64 bytes;
1014 } tx_stats[3], rx_stats[3];
1015
1016 /* counts interrupts */
1017 struct isr_statistics isr_stats;
1018
1019 struct iwl_power_mgr power_data;
1020
1021 struct iwl_notif_statistics statistics;
1022 unsigned long last_statistics_time;
1023
1024 /* context information */
1025 u16 rates_mask;
1026
1027 u32 power_mode;
1028 u8 bssid[ETH_ALEN];
1029 u16 rts_threshold;
1030 u8 mac_addr[ETH_ALEN];
1031
1032 /*station table variables */
1033 spinlock_t sta_lock;
1034 int num_stations;
1035 struct iwl_station_entry stations[IWL_STATION_COUNT];
1036 struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
1037 u8 default_wep_key;
1038 u8 key_mapping_key;
1039 unsigned long ucode_key_table;
1040
1041 /* queue refcounts */
1042 #define IWL_MAX_HW_QUEUES 32
1043 unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
1044 /* for each AC */
1045 atomic_t queue_stop_count[4];
1046
1047 /* Indication if ieee80211_ops->open has been called */
1048 u8 is_open;
1049
1050 u8 mac80211_registered;
1051
1052 /* Rx'd packet timing information */
1053 u32 last_beacon_time;
1054 u64 last_tsf;
1055
1056 /* eeprom */
1057 u8 *eeprom;
1058 int nvm_device_type;
1059 struct iwl_eeprom_calib_info *calib_info;
1060
1061 enum nl80211_iftype iw_mode;
1062
1063 struct sk_buff *ibss_beacon;
1064
1065 /* Last Rx'd beacon timestamp */
1066 u64 timestamp;
1067 u16 beacon_int;
1068 struct ieee80211_vif *vif;
1069
1070 /*Added for 3945 */
1071 void *shared_virt;
1072 dma_addr_t shared_phys;
1073 /*End*/
1074 struct iwl_hw_params hw_params;
1075
1076 /* INT ICT Table */
1077 u32 *ict_tbl;
1078 dma_addr_t ict_tbl_dma;
1079 dma_addr_t aligned_ict_tbl_dma;
1080 int ict_index;
1081 void *ict_tbl_vir;
1082 u32 inta;
1083 bool use_ict;
1084
1085 u32 inta_mask;
1086 /* Current association information needed to configure the
1087 * hardware */
1088 u16 assoc_id;
1089 u16 assoc_capability;
1090
1091 struct iwl_qos_info qos_data;
1092
1093 struct workqueue_struct *workqueue;
1094
1095 struct work_struct up;
1096 struct work_struct restart;
1097 struct work_struct calibrated_work;
1098 struct work_struct scan_completed;
1099 struct work_struct rx_replenish;
1100 struct work_struct abort_scan;
1101 struct work_struct update_link_led;
1102 struct work_struct auth_work;
1103 struct work_struct report_work;
1104 struct work_struct request_scan;
1105 struct work_struct beacon_update;
1106
1107 struct tasklet_struct irq_tasklet;
1108
1109 struct delayed_work init_alive_start;
1110 struct delayed_work alive_start;
1111 struct delayed_work scan_check;
1112
1113 /*For 3945 only*/
1114 struct delayed_work thermal_periodic;
1115 struct delayed_work rfkill_poll;
1116
1117 /* TX Power */
1118 s8 tx_power_user_lmt;
1119 s8 tx_power_channel_lmt;
1120
1121
1122 #ifdef CONFIG_IWLWIFI_DEBUG
1123 /* debugging info */
1124 u32 debug_level;
1125 u32 framecnt_to_us;
1126 atomic_t restrict_refcnt;
1127 #ifdef CONFIG_IWLWIFI_DEBUGFS
1128 /* debugfs */
1129 struct iwl_debugfs *dbgfs;
1130 #endif /* CONFIG_IWLWIFI_DEBUGFS */
1131 #endif /* CONFIG_IWLWIFI_DEBUG */
1132
1133 struct work_struct txpower_work;
1134 u32 disable_sens_cal;
1135 u32 disable_chain_noise_cal;
1136 u32 disable_tx_power_cal;
1137 struct work_struct run_time_calib_work;
1138 struct timer_list statistics_periodic;
1139 bool hw_ready;
1140 /*For 3945*/
1141 #define IWL_DEFAULT_TX_POWER 0x0F
1142
1143 struct iwl3945_notif_statistics statistics_39;
1144
1145 u32 sta_supp_rates;
1146 }; /*iwl_priv */
1147
1148 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
1149 {
1150 set_bit(txq_id, &priv->txq_ctx_active_msk);
1151 }
1152
1153 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
1154 {
1155 clear_bit(txq_id, &priv->txq_ctx_active_msk);
1156 }
1157
1158 #ifdef CONFIG_IWLWIFI_DEBUG
1159 const char *iwl_get_tx_fail_reason(u32 status);
1160 #else
1161 static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
1162 #endif
1163
1164
1165 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1166 int txq_id, int idx)
1167 {
1168 if (priv->txq[txq_id].txb[idx].skb[0])
1169 return (struct ieee80211_hdr *)priv->txq[txq_id].
1170 txb[idx].skb[0]->data;
1171 return NULL;
1172 }
1173
1174
1175 static inline int iwl_is_associated(struct iwl_priv *priv)
1176 {
1177 return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1178 }
1179
1180 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1181 {
1182 if (ch_info == NULL)
1183 return 0;
1184 return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1185 }
1186
1187 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1188 {
1189 return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1190 }
1191
1192 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1193 {
1194 return ch_info->band == IEEE80211_BAND_5GHZ;
1195 }
1196
1197 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1198 {
1199 return ch_info->band == IEEE80211_BAND_2GHZ;
1200 }
1201
1202 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1203 {
1204 return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1205 }
1206
1207 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1208 {
1209 return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1210 }
1211
1212 #endif /* __iwl_dev_h__ */
1213
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