1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 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 #ifndef __il_core_h__
27 #define __il_core_h__
28
29 #include <linux/interrupt.h>
30 #include <linux/pci.h> /* for struct pci_device_id */
31 #include <linux/kernel.h>
32 #include <linux/leds.h>
33 #include <linux/wait.h>
34 #include <linux/io.h>
35 #include <net/mac80211.h>
36 #include <net/ieee80211_radiotap.h>
37
38 #include "commands.h"
39 #include "csr.h"
40 #include "prph.h"
41
42 struct il_host_cmd;
43 struct il_cmd;
44 struct il_tx_queue;
45
46 #define IL_ERR(f, a...) dev_err(&il->pci_dev->dev, f, ## a)
47 #define IL_WARN(f, a...) dev_warn(&il->pci_dev->dev, f, ## a)
48 #define IL_INFO(f, a...) dev_info(&il->pci_dev->dev, f, ## a)
49
50 #define RX_QUEUE_SIZE 256
51 #define RX_QUEUE_MASK 255
52 #define RX_QUEUE_SIZE_LOG 8
53
54 /*
55 * RX related structures and functions
56 */
57 #define RX_FREE_BUFFERS 64
58 #define RX_LOW_WATERMARK 8
59
60 #define U32_PAD(n) ((4-(n))&0x3)
61
62 /* CT-KILL constants */
63 #define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */
64
65 /* Default noise level to report when noise measurement is not available.
66 * This may be because we're:
67 * 1) Not associated (4965, no beacon stats being sent to driver)
68 * 2) Scanning (noise measurement does not apply to associated channel)
69 * 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
70 * Use default noise value of -127 ... this is below the range of measurable
71 * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
72 * Also, -127 works better than 0 when averaging frames with/without
73 * noise info (e.g. averaging might be done in app); measured dBm values are
74 * always negative ... using a negative value as the default keeps all
75 * averages within an s8's (used in some apps) range of negative values. */
76 #define IL_NOISE_MEAS_NOT_AVAILABLE (-127)
77
78 /*
79 * RTS threshold here is total size [2347] minus 4 FCS bytes
80 * Per spec:
81 * a value of 0 means RTS on all data/management packets
82 * a value > max MSDU size means no RTS
83 * else RTS for data/management frames where MPDU is larger
84 * than RTS value.
85 */
86 #define DEFAULT_RTS_THRESHOLD 2347U
87 #define MIN_RTS_THRESHOLD 0U
88 #define MAX_RTS_THRESHOLD 2347U
89 #define MAX_MSDU_SIZE 2304U
90 #define MAX_MPDU_SIZE 2346U
91 #define DEFAULT_BEACON_INTERVAL 100U
92 #define DEFAULT_SHORT_RETRY_LIMIT 7U
93 #define DEFAULT_LONG_RETRY_LIMIT 4U
94
95 struct il_rx_buf {
96 dma_addr_t page_dma;
97 struct page *page;
98 struct list_head list;
99 };
100
101 #define rxb_addr(r) page_address(r->page)
102
103 /* defined below */
104 struct il_device_cmd;
105
106 struct il_cmd_meta {
107 /* only for SYNC commands, iff the reply skb is wanted */
108 struct il_host_cmd *source;
109 /*
110 * only for ASYNC commands
111 * (which is somewhat stupid -- look at common.c for instance
112 * which duplicates a bunch of code because the callback isn't
113 * invoked for SYNC commands, if it were and its result passed
114 * through it would be simpler...)
115 */
116 void (*callback) (struct il_priv *il, struct il_device_cmd *cmd,
117 struct il_rx_pkt *pkt);
118
119 /* The CMD_SIZE_HUGE flag bit indicates that the command
120 * structure is stored at the end of the shared queue memory. */
121 u32 flags;
122
123 DEFINE_DMA_UNMAP_ADDR(mapping);
124 DEFINE_DMA_UNMAP_LEN(len);
125 };
126
127 /*
128 * Generic queue structure
129 *
130 * Contains common data for Rx and Tx queues
131 */
132 struct il_queue {
133 int n_bd; /* number of BDs in this queue */
134 int write_ptr; /* 1-st empty entry (idx) host_w */
135 int read_ptr; /* last used entry (idx) host_r */
136 /* use for monitoring and recovering the stuck queue */
137 dma_addr_t dma_addr; /* physical addr for BD's */
138 int n_win; /* safe queue win */
139 u32 id;
140 int low_mark; /* low watermark, resume queue if free
141 * space more than this */
142 int high_mark; /* high watermark, stop queue if free
143 * space less than this */
144 };
145
146 /**
147 * struct il_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 buffer pointers
151 * @meta: array of meta data for each command/tx buffer
152 * @dma_addr_cmd: physical address of cmd/tx buffer array
153 * @skbs: array of per-TFD socket buffer pointers
154 * @time_stamp: time (in jiffies) of last read_ptr change
155 * @need_update: indicates need to update read/write idx
156 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
157 *
158 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
159 * descriptors) and required locking structures.
160 */
161 #define TFD_TX_CMD_SLOTS 256
162 #define TFD_CMD_SLOTS 32
163
164 struct il_tx_queue {
165 struct il_queue q;
166 void *tfds;
167 struct il_device_cmd **cmd;
168 struct il_cmd_meta *meta;
169 struct sk_buff **skbs;
170 unsigned long time_stamp;
171 u8 need_update;
172 u8 sched_retry;
173 u8 active;
174 u8 swq_id;
175 };
176
177 /*
178 * EEPROM access time values:
179 *
180 * Driver initiates EEPROM read by writing byte address << 1 to CSR_EEPROM_REG.
181 * Driver then polls CSR_EEPROM_REG for CSR_EEPROM_REG_READ_VALID_MSK (0x1).
182 * When polling, wait 10 uSec between polling loops, up to a maximum 5000 uSec.
183 * Driver reads 16-bit value from bits 31-16 of CSR_EEPROM_REG.
184 */
185 #define IL_EEPROM_ACCESS_TIMEOUT 5000 /* uSec */
186
187 #define IL_EEPROM_SEM_TIMEOUT 10 /* microseconds */
188 #define IL_EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
189
190 /*
191 * Regulatory channel usage flags in EEPROM struct il4965_eeprom_channel.flags.
192 *
193 * IBSS and/or AP operation is allowed *only* on those channels with
194 * (VALID && IBSS && ACTIVE && !RADAR). This restriction is in place because
195 * RADAR detection is not supported by the 4965 driver, but is a
196 * requirement for establishing a new network for legal operation on channels
197 * requiring RADAR detection or restricting ACTIVE scanning.
198 *
199 * NOTE: "WIDE" flag does not indicate anything about "HT40" 40 MHz channels.
200 * It only indicates that 20 MHz channel use is supported; HT40 channel
201 * usage is indicated by a separate set of regulatory flags for each
202 * HT40 channel pair.
203 *
204 * NOTE: Using a channel inappropriately will result in a uCode error!
205 */
206 #define IL_NUM_TX_CALIB_GROUPS 5
207 enum {
208 EEPROM_CHANNEL_VALID = (1 << 0), /* usable for this SKU/geo */
209 EEPROM_CHANNEL_IBSS = (1 << 1), /* usable as an IBSS channel */
210 /* Bit 2 Reserved */
211 EEPROM_CHANNEL_ACTIVE = (1 << 3), /* active scanning allowed */
212 EEPROM_CHANNEL_RADAR = (1 << 4), /* radar detection required */
213 EEPROM_CHANNEL_WIDE = (1 << 5), /* 20 MHz channel okay */
214 /* Bit 6 Reserved (was Narrow Channel) */
215 EEPROM_CHANNEL_DFS = (1 << 7), /* dynamic freq selection candidate */
216 };
217
218 /* SKU Capabilities */
219 /* 3945 only */
220 #define EEPROM_SKU_CAP_SW_RF_KILL_ENABLE (1 << 0)
221 #define EEPROM_SKU_CAP_HW_RF_KILL_ENABLE (1 << 1)
222
223 /* *regulatory* channel data format in eeprom, one for each channel.
224 * There are separate entries for HT40 (40 MHz) vs. normal (20 MHz) channels. */
225 struct il_eeprom_channel {
226 u8 flags; /* EEPROM_CHANNEL_* flags copied from EEPROM */
227 s8 max_power_avg; /* max power (dBm) on this chnl, limit 31 */
228 } __packed;
229
230 /* 3945 Specific */
231 #define EEPROM_3945_EEPROM_VERSION (0x2f)
232
233 /* 4965 has two radio transmitters (and 3 radio receivers) */
234 #define EEPROM_TX_POWER_TX_CHAINS (2)
235
236 /* 4965 has room for up to 8 sets of txpower calibration data */
237 #define EEPROM_TX_POWER_BANDS (8)
238
239 /* 4965 factory calibration measures txpower gain settings for
240 * each of 3 target output levels */
241 #define EEPROM_TX_POWER_MEASUREMENTS (3)
242
243 /* 4965 Specific */
244 /* 4965 driver does not work with txpower calibration version < 5 */
245 #define EEPROM_4965_TX_POWER_VERSION (5)
246 #define EEPROM_4965_EEPROM_VERSION (0x2f)
247 #define EEPROM_4965_CALIB_VERSION_OFFSET (2*0xB6) /* 2 bytes */
248 #define EEPROM_4965_CALIB_TXPOWER_OFFSET (2*0xE8) /* 48 bytes */
249 #define EEPROM_4965_BOARD_REVISION (2*0x4F) /* 2 bytes */
250 #define EEPROM_4965_BOARD_PBA (2*0x56+1) /* 9 bytes */
251
252 /* 2.4 GHz */
253 extern const u8 il_eeprom_band_1[14];
254
255 /*
256 * factory calibration data for one txpower level, on one channel,
257 * measured on one of the 2 tx chains (radio transmitter and associated
258 * antenna). EEPROM contains:
259 *
260 * 1) Temperature (degrees Celsius) of device when measurement was made.
261 *
262 * 2) Gain table idx used to achieve the target measurement power.
263 * This refers to the "well-known" gain tables (see 4965.h).
264 *
265 * 3) Actual measured output power, in half-dBm ("34" = 17 dBm).
266 *
267 * 4) RF power amplifier detector level measurement (not used).
268 */
269 struct il_eeprom_calib_measure {
270 u8 temperature; /* Device temperature (Celsius) */
271 u8 gain_idx; /* Index into gain table */
272 u8 actual_pow; /* Measured RF output power, half-dBm */
273 s8 pa_det; /* Power amp detector level (not used) */
274 } __packed;
275
276 /*
277 * measurement set for one channel. EEPROM contains:
278 *
279 * 1) Channel number measured
280 *
281 * 2) Measurements for each of 3 power levels for each of 2 radio transmitters
282 * (a.k.a. "tx chains") (6 measurements altogether)
283 */
284 struct il_eeprom_calib_ch_info {
285 u8 ch_num;
286 struct il_eeprom_calib_measure
287 measurements[EEPROM_TX_POWER_TX_CHAINS]
288 [EEPROM_TX_POWER_MEASUREMENTS];
289 } __packed;
290
291 /*
292 * txpower subband info.
293 *
294 * For each frequency subband, EEPROM contains the following:
295 *
296 * 1) First and last channels within range of the subband. "0" values
297 * indicate that this sample set is not being used.
298 *
299 * 2) Sample measurement sets for 2 channels close to the range endpoints.
300 */
301 struct il_eeprom_calib_subband_info {
302 u8 ch_from; /* channel number of lowest channel in subband */
303 u8 ch_to; /* channel number of highest channel in subband */
304 struct il_eeprom_calib_ch_info ch1;
305 struct il_eeprom_calib_ch_info ch2;
306 } __packed;
307
308 /*
309 * txpower calibration info. EEPROM contains:
310 *
311 * 1) Factory-measured saturation power levels (maximum levels at which
312 * tx power amplifier can output a signal without too much distortion).
313 * There is one level for 2.4 GHz band and one for 5 GHz band. These
314 * values apply to all channels within each of the bands.
315 *
316 * 2) Factory-measured power supply voltage level. This is assumed to be
317 * constant (i.e. same value applies to all channels/bands) while the
318 * factory measurements are being made.
319 *
320 * 3) Up to 8 sets of factory-measured txpower calibration values.
321 * These are for different frequency ranges, since txpower gain
322 * characteristics of the analog radio circuitry vary with frequency.
323 *
324 * Not all sets need to be filled with data;
325 * struct il_eeprom_calib_subband_info contains range of channels
326 * (0 if unused) for each set of data.
327 */
328 struct il_eeprom_calib_info {
329 u8 saturation_power24; /* half-dBm (e.g. "34" = 17 dBm) */
330 u8 saturation_power52; /* half-dBm */
331 __le16 voltage; /* signed */
332 struct il_eeprom_calib_subband_info band_info[EEPROM_TX_POWER_BANDS];
333 } __packed;
334
335 /* General */
336 #define EEPROM_DEVICE_ID (2*0x08) /* 2 bytes */
337 #define EEPROM_MAC_ADDRESS (2*0x15) /* 6 bytes */
338 #define EEPROM_BOARD_REVISION (2*0x35) /* 2 bytes */
339 #define EEPROM_BOARD_PBA_NUMBER (2*0x3B+1) /* 9 bytes */
340 #define EEPROM_VERSION (2*0x44) /* 2 bytes */
341 #define EEPROM_SKU_CAP (2*0x45) /* 2 bytes */
342 #define EEPROM_OEM_MODE (2*0x46) /* 2 bytes */
343 #define EEPROM_WOWLAN_MODE (2*0x47) /* 2 bytes */
344 #define EEPROM_RADIO_CONFIG (2*0x48) /* 2 bytes */
345 #define EEPROM_NUM_MAC_ADDRESS (2*0x4C) /* 2 bytes */
346
347 /* The following masks are to be applied on EEPROM_RADIO_CONFIG */
348 #define EEPROM_RF_CFG_TYPE_MSK(x) (x & 0x3) /* bits 0-1 */
349 #define EEPROM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */
350 #define EEPROM_RF_CFG_DASH_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */
351 #define EEPROM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */
352 #define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */
353 #define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
354
355 #define EEPROM_3945_RF_CFG_TYPE_MAX 0x0
356 #define EEPROM_4965_RF_CFG_TYPE_MAX 0x1
357
358 /*
359 * Per-channel regulatory data.
360 *
361 * Each channel that *might* be supported by iwl has a fixed location
362 * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory
363 * txpower (MSB).
364 *
365 * Entries immediately below are for 20 MHz channel width. HT40 (40 MHz)
366 * channels (only for 4965, not supported by 3945) appear later in the EEPROM.
367 *
368 * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
369 */
370 #define EEPROM_REGULATORY_SKU_ID (2*0x60) /* 4 bytes */
371 #define EEPROM_REGULATORY_BAND_1 (2*0x62) /* 2 bytes */
372 #define EEPROM_REGULATORY_BAND_1_CHANNELS (2*0x63) /* 28 bytes */
373
374 /*
375 * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196,
376 * 5.0 GHz channels 7, 8, 11, 12, 16
377 * (4915-5080MHz) (none of these is ever supported)
378 */
379 #define EEPROM_REGULATORY_BAND_2 (2*0x71) /* 2 bytes */
380 #define EEPROM_REGULATORY_BAND_2_CHANNELS (2*0x72) /* 26 bytes */
381
382 /*
383 * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
384 * (5170-5320MHz)
385 */
386 #define EEPROM_REGULATORY_BAND_3 (2*0x7F) /* 2 bytes */
387 #define EEPROM_REGULATORY_BAND_3_CHANNELS (2*0x80) /* 24 bytes */
388
389 /*
390 * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
391 * (5500-5700MHz)
392 */
393 #define EEPROM_REGULATORY_BAND_4 (2*0x8C) /* 2 bytes */
394 #define EEPROM_REGULATORY_BAND_4_CHANNELS (2*0x8D) /* 22 bytes */
395
396 /*
397 * 5.7 GHz channels 145, 149, 153, 157, 161, 165
398 * (5725-5825MHz)
399 */
400 #define EEPROM_REGULATORY_BAND_5 (2*0x98) /* 2 bytes */
401 #define EEPROM_REGULATORY_BAND_5_CHANNELS (2*0x99) /* 12 bytes */
402
403 /*
404 * 2.4 GHz HT40 channels 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11)
405 *
406 * The channel listed is the center of the lower 20 MHz half of the channel.
407 * The overall center frequency is actually 2 channels (10 MHz) above that,
408 * and the upper half of each HT40 channel is centered 4 channels (20 MHz) away
409 * from the lower half; e.g. the upper half of HT40 channel 1 is channel 5,
410 * and the overall HT40 channel width centers on channel 3.
411 *
412 * NOTE: The RXON command uses 20 MHz channel numbers to specify the
413 * control channel to which to tune. RXON also specifies whether the
414 * control channel is the upper or lower half of a HT40 channel.
415 *
416 * NOTE: 4965 does not support HT40 channels on 2.4 GHz.
417 */
418 #define EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS (2*0xA0) /* 14 bytes */
419
420 /*
421 * 5.2 GHz HT40 channels 36 (40), 44 (48), 52 (56), 60 (64),
422 * 100 (104), 108 (112), 116 (120), 124 (128), 132 (136), 149 (153), 157 (161)
423 */
424 #define EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS (2*0xA8) /* 22 bytes */
425
426 #define EEPROM_REGULATORY_BAND_NO_HT40 (0)
427
428 int il_eeprom_init(struct il_priv *il);
429 void il_eeprom_free(struct il_priv *il);
430 const u8 *il_eeprom_query_addr(const struct il_priv *il, size_t offset);
431 u16 il_eeprom_query16(const struct il_priv *il, size_t offset);
432 int il_init_channel_map(struct il_priv *il);
433 void il_free_channel_map(struct il_priv *il);
434 const struct il_channel_info *il_get_channel_info(const struct il_priv *il,
435 enum nl80211_band band,
436 u16 channel);
437
438 #define IL_NUM_SCAN_RATES (2)
439
440 struct il4965_channel_tgd_info {
441 u8 type;
442 s8 max_power;
443 };
444
445 struct il4965_channel_tgh_info {
446 s64 last_radar_time;
447 };
448
449 #define IL4965_MAX_RATE (33)
450
451 struct il3945_clip_group {
452 /* maximum power level to prevent clipping for each rate, derived by
453 * us from this band's saturation power in EEPROM */
454 const s8 clip_powers[IL_MAX_RATES];
455 };
456
457 /* current Tx power values to use, one for each rate for each channel.
458 * requested power is limited by:
459 * -- regulatory EEPROM limits for this channel
460 * -- hardware capabilities (clip-powers)
461 * -- spectrum management
462 * -- user preference (e.g. iwconfig)
463 * when requested power is set, base power idx must also be set. */
464 struct il3945_channel_power_info {
465 struct il3945_tx_power tpc; /* actual radio and DSP gain settings */
466 s8 power_table_idx; /* actual (compenst'd) idx into gain table */
467 s8 base_power_idx; /* gain idx for power at factory temp. */
468 s8 requested_power; /* power (dBm) requested for this chnl/rate */
469 };
470
471 /* current scan Tx power values to use, one for each scan rate for each
472 * channel. */
473 struct il3945_scan_power_info {
474 struct il3945_tx_power tpc; /* actual radio and DSP gain settings */
475 s8 power_table_idx; /* actual (compenst'd) idx into gain table */
476 s8 requested_power; /* scan pwr (dBm) requested for chnl/rate */
477 };
478
479 /*
480 * One for each channel, holds all channel setup data
481 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
482 * with one another!
483 */
484 struct il_channel_info {
485 struct il4965_channel_tgd_info tgd;
486 struct il4965_channel_tgh_info tgh;
487 struct il_eeprom_channel eeprom; /* EEPROM regulatory limit */
488 struct il_eeprom_channel ht40_eeprom; /* EEPROM regulatory limit for
489 * HT40 channel */
490
491 u8 channel; /* channel number */
492 u8 flags; /* flags copied from EEPROM */
493 s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
494 s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
495 s8 min_power; /* always 0 */
496 s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
497
498 u8 group_idx; /* 0-4, maps channel to group1/2/3/4/5 */
499 u8 band_idx; /* 0-4, maps channel to band1/2/3/4/5 */
500 enum nl80211_band band;
501
502 /* HT40 channel info */
503 s8 ht40_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
504 u8 ht40_flags; /* flags copied from EEPROM */
505 u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */
506
507 /* Radio/DSP gain settings for each "normal" data Tx rate.
508 * These include, in addition to RF and DSP gain, a few fields for
509 * remembering/modifying gain settings (idxes). */
510 struct il3945_channel_power_info power_info[IL4965_MAX_RATE];
511
512 /* Radio/DSP gain settings for each scan rate, for directed scans. */
513 struct il3945_scan_power_info scan_pwr_info[IL_NUM_SCAN_RATES];
514 };
515
516 #define IL_TX_FIFO_BK 0 /* shared */
517 #define IL_TX_FIFO_BE 1
518 #define IL_TX_FIFO_VI 2 /* shared */
519 #define IL_TX_FIFO_VO 3
520 #define IL_TX_FIFO_UNUSED -1
521
522 /* Minimum number of queues. MAX_NUM is defined in hw specific files.
523 * Set the minimum to accommodate the 4 standard TX queues, 1 command
524 * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
525 #define IL_MIN_NUM_QUEUES 10
526
527 #define IL_DEFAULT_CMD_QUEUE_NUM 4
528
529 #define IEEE80211_DATA_LEN 2304
530 #define IEEE80211_4ADDR_LEN 30
531 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
532 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
533
534 struct il_frame {
535 union {
536 struct ieee80211_hdr frame;
537 struct il_tx_beacon_cmd beacon;
538 u8 raw[IEEE80211_FRAME_LEN];
539 u8 cmd[360];
540 } u;
541 struct list_head list;
542 };
543
544 enum {
545 CMD_SYNC = 0,
546 CMD_SIZE_NORMAL = 0,
547 CMD_NO_SKB = 0,
548 CMD_SIZE_HUGE = (1 << 0),
549 CMD_ASYNC = (1 << 1),
550 CMD_WANT_SKB = (1 << 2),
551 CMD_MAPPED = (1 << 3),
552 };
553
554 #define DEF_CMD_PAYLOAD_SIZE 320
555
556 /**
557 * struct il_device_cmd
558 *
559 * For allocation of the command and tx queues, this establishes the overall
560 * size of the largest command we send to uCode, except for a scan command
561 * (which is relatively huge; space is allocated separately).
562 */
563 struct il_device_cmd {
564 struct il_cmd_header hdr; /* uCode API */
565 union {
566 u32 flags;
567 u8 val8;
568 u16 val16;
569 u32 val32;
570 struct il_tx_cmd tx;
571 u8 payload[DEF_CMD_PAYLOAD_SIZE];
572 } __packed cmd;
573 } __packed;
574
575 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct il_device_cmd))
576
577 struct il_host_cmd {
578 const void *data;
579 unsigned long reply_page;
580 void (*callback) (struct il_priv *il, struct il_device_cmd *cmd,
581 struct il_rx_pkt *pkt);
582 u32 flags;
583 u16 len;
584 u8 id;
585 };
586
587 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
588 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
589 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
590
591 /**
592 * struct il_rx_queue - Rx queue
593 * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
594 * @bd_dma: bus address of buffer of receive buffer descriptors (rbd)
595 * @read: Shared idx to newest available Rx buffer
596 * @write: Shared idx to oldest written Rx packet
597 * @free_count: Number of pre-allocated buffers in rx_free
598 * @rx_free: list of free SKBs for use
599 * @rx_used: List of Rx buffers with no SKB
600 * @need_update: flag to indicate we need to update read/write idx
601 * @rb_stts: driver's pointer to receive buffer status
602 * @rb_stts_dma: bus address of receive buffer status
603 *
604 * NOTE: rx_free and rx_used are used as a FIFO for il_rx_bufs
605 */
606 struct il_rx_queue {
607 __le32 *bd;
608 dma_addr_t bd_dma;
609 struct il_rx_buf pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
610 struct il_rx_buf *queue[RX_QUEUE_SIZE];
611 u32 read;
612 u32 write;
613 u32 free_count;
614 u32 write_actual;
615 struct list_head rx_free;
616 struct list_head rx_used;
617 int need_update;
618 struct il_rb_status *rb_stts;
619 dma_addr_t rb_stts_dma;
620 spinlock_t lock;
621 };
622
623 #define IL_SUPPORTED_RATES_IE_LEN 8
624
625 #define MAX_TID_COUNT 9
626
627 #define IL_INVALID_RATE 0xFF
628 #define IL_INVALID_VALUE -1
629
630 /**
631 * struct il_ht_agg -- aggregation status while waiting for block-ack
632 * @txq_id: Tx queue used for Tx attempt
633 * @frame_count: # frames attempted by Tx command
634 * @wait_for_ba: Expect block-ack before next Tx reply
635 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx win
636 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx win
637 * @bitmap1: High order, one bit for each frame pending ACK in Tx win
638 * @rate_n_flags: Rate at which Tx was attempted
639 *
640 * If C_TX indicates that aggregation was attempted, driver must wait
641 * for block ack (N_COMPRESSED_BA). This struct stores tx reply info
642 * until block ack arrives.
643 */
644 struct il_ht_agg {
645 u16 txq_id;
646 u16 frame_count;
647 u16 wait_for_ba;
648 u16 start_idx;
649 u64 bitmap;
650 u32 rate_n_flags;
651 #define IL_AGG_OFF 0
652 #define IL_AGG_ON 1
653 #define IL_EMPTYING_HW_QUEUE_ADDBA 2
654 #define IL_EMPTYING_HW_QUEUE_DELBA 3
655 u8 state;
656 };
657
658 struct il_tid_data {
659 u16 seq_number; /* 4965 only */
660 u16 tfds_in_queue;
661 struct il_ht_agg agg;
662 };
663
664 struct il_hw_key {
665 u32 cipher;
666 int keylen;
667 u8 keyidx;
668 u8 key[32];
669 };
670
671 union il_ht_rate_supp {
672 u16 rates;
673 struct {
674 u8 siso_rate;
675 u8 mimo_rate;
676 };
677 };
678
679 #define CFG_HT_RX_AMPDU_FACTOR_8K (0x0)
680 #define CFG_HT_RX_AMPDU_FACTOR_16K (0x1)
681 #define CFG_HT_RX_AMPDU_FACTOR_32K (0x2)
682 #define CFG_HT_RX_AMPDU_FACTOR_64K (0x3)
683 #define CFG_HT_RX_AMPDU_FACTOR_DEF CFG_HT_RX_AMPDU_FACTOR_64K
684 #define CFG_HT_RX_AMPDU_FACTOR_MAX CFG_HT_RX_AMPDU_FACTOR_64K
685 #define CFG_HT_RX_AMPDU_FACTOR_MIN CFG_HT_RX_AMPDU_FACTOR_8K
686
687 /*
688 * Maximal MPDU density for TX aggregation
689 * 4 - 2us density
690 * 5 - 4us density
691 * 6 - 8us density
692 * 7 - 16us density
693 */
694 #define CFG_HT_MPDU_DENSITY_2USEC (0x4)
695 #define CFG_HT_MPDU_DENSITY_4USEC (0x5)
696 #define CFG_HT_MPDU_DENSITY_8USEC (0x6)
697 #define CFG_HT_MPDU_DENSITY_16USEC (0x7)
698 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC
699 #define CFG_HT_MPDU_DENSITY_MAX CFG_HT_MPDU_DENSITY_16USEC
700 #define CFG_HT_MPDU_DENSITY_MIN (0x1)
701
702 struct il_ht_config {
703 bool single_chain_sufficient;
704 enum ieee80211_smps_mode smps; /* current smps mode */
705 };
706
707 /* QoS structures */
708 struct il_qos_info {
709 int qos_active;
710 struct il_qosparam_cmd def_qos_parm;
711 };
712
713 /*
714 * Structure should be accessed with sta_lock held. When station addition
715 * is in progress (IL_STA_UCODE_INPROGRESS) it is possible to access only
716 * the commands (il_addsta_cmd and il_link_quality_cmd) without
717 * sta_lock held.
718 */
719 struct il_station_entry {
720 struct il_addsta_cmd sta;
721 struct il_tid_data tid[MAX_TID_COUNT];
722 u8 used;
723 struct il_hw_key keyinfo;
724 struct il_link_quality_cmd *lq;
725 };
726
727 struct il_station_priv_common {
728 u8 sta_id;
729 };
730
731 /**
732 * struct il_vif_priv - driver's ilate per-interface information
733 *
734 * When mac80211 allocates a virtual interface, it can allocate
735 * space for us to put data into.
736 */
737 struct il_vif_priv {
738 u8 ibss_bssid_sta_id;
739 };
740
741 /* one for each uCode image (inst/data, boot/init/runtime) */
742 struct fw_desc {
743 void *v_addr; /* access by driver */
744 dma_addr_t p_addr; /* access by card's busmaster DMA */
745 u32 len; /* bytes */
746 };
747
748 /* uCode file layout */
749 struct il_ucode_header {
750 __le32 ver; /* major/minor/API/serial */
751 struct {
752 __le32 inst_size; /* bytes of runtime code */
753 __le32 data_size; /* bytes of runtime data */
754 __le32 init_size; /* bytes of init code */
755 __le32 init_data_size; /* bytes of init data */
756 __le32 boot_size; /* bytes of bootstrap code */
757 u8 data[0]; /* in same order as sizes */
758 } v1;
759 };
760
761 struct il4965_ibss_seq {
762 u8 mac[ETH_ALEN];
763 u16 seq_num;
764 u16 frag_num;
765 unsigned long packet_time;
766 struct list_head list;
767 };
768
769 struct il_sensitivity_ranges {
770 u16 min_nrg_cck;
771 u16 max_nrg_cck;
772
773 u16 nrg_th_cck;
774 u16 nrg_th_ofdm;
775
776 u16 auto_corr_min_ofdm;
777 u16 auto_corr_min_ofdm_mrc;
778 u16 auto_corr_min_ofdm_x1;
779 u16 auto_corr_min_ofdm_mrc_x1;
780
781 u16 auto_corr_max_ofdm;
782 u16 auto_corr_max_ofdm_mrc;
783 u16 auto_corr_max_ofdm_x1;
784 u16 auto_corr_max_ofdm_mrc_x1;
785
786 u16 auto_corr_max_cck;
787 u16 auto_corr_max_cck_mrc;
788 u16 auto_corr_min_cck;
789 u16 auto_corr_min_cck_mrc;
790
791 u16 barker_corr_th_min;
792 u16 barker_corr_th_min_mrc;
793 u16 nrg_th_cca;
794 };
795
796 #define KELVIN_TO_CELSIUS(x) ((x)-273)
797 #define CELSIUS_TO_KELVIN(x) ((x)+273)
798
799 /**
800 * struct il_hw_params
801 * @bcast_id: f/w broadcast station ID
802 * @max_txq_num: Max # Tx queues supported
803 * @dma_chnl_num: Number of Tx DMA/FIFO channels
804 * @scd_bc_tbls_size: size of scheduler byte count tables
805 * @tfd_size: TFD size
806 * @tx/rx_chains_num: Number of TX/RX chains
807 * @valid_tx/rx_ant: usable antennas
808 * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
809 * @max_rxq_log: Log-base-2 of max_rxq_size
810 * @rx_page_order: Rx buffer page order
811 * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
812 * @max_stations:
813 * @ht40_channel: is 40MHz width possible in band 2.4
814 * BIT(NL80211_BAND_5GHZ) BIT(NL80211_BAND_5GHZ)
815 * @sw_crypto: 0 for hw, 1 for sw
816 * @max_xxx_size: for ucode uses
817 * @ct_kill_threshold: temperature threshold
818 * @beacon_time_tsf_bits: number of valid tsf bits for beacon time
819 * @struct il_sensitivity_ranges: range of sensitivity values
820 */
821 struct il_hw_params {
822 u8 bcast_id;
823 u8 max_txq_num;
824 u8 dma_chnl_num;
825 u16 scd_bc_tbls_size;
826 u32 tfd_size;
827 u8 tx_chains_num;
828 u8 rx_chains_num;
829 u8 valid_tx_ant;
830 u8 valid_rx_ant;
831 u16 max_rxq_size;
832 u16 max_rxq_log;
833 u32 rx_page_order;
834 u32 rx_wrt_ptr_reg;
835 u8 max_stations;
836 u8 ht40_channel;
837 u8 max_beacon_itrvl; /* in 1024 ms */
838 u32 max_inst_size;
839 u32 max_data_size;
840 u32 max_bsm_size;
841 u32 ct_kill_threshold; /* value in hw-dependent units */
842 u16 beacon_time_tsf_bits;
843 const struct il_sensitivity_ranges *sens;
844 };
845
846 /******************************************************************************
847 *
848 * Functions implemented in core module which are forward declared here
849 * for use by iwl-[4-5].c
850 *
851 * NOTE: The implementation of these functions are not hardware specific
852 * which is why they are in the core module files.
853 *
854 * Naming convention --
855 * il_ <-- Is part of iwlwifi
856 * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
857 * il4965_bg_ <-- Called from work queue context
858 * il4965_mac_ <-- mac80211 callback
859 *
860 ****************************************************************************/
861 void il4965_update_chain_flags(struct il_priv *il);
862 extern const u8 il_bcast_addr[ETH_ALEN];
863 int il_queue_space(const struct il_queue *q);
864 static inline int
il_queue_used(const struct il_queue * q,int i)865 il_queue_used(const struct il_queue *q, int i)
866 {
867 return q->write_ptr >= q->read_ptr ? (i >= q->read_ptr &&
868 i < q->write_ptr) : !(i <
869 q->read_ptr
870 && i >=
871 q->
872 write_ptr);
873 }
874
875 static inline u8
il_get_cmd_idx(struct il_queue * q,u32 idx,int is_huge)876 il_get_cmd_idx(struct il_queue *q, u32 idx, int is_huge)
877 {
878 /*
879 * This is for init calibration result and scan command which
880 * required buffer > TFD_MAX_PAYLOAD_SIZE,
881 * the big buffer at end of command array
882 */
883 if (is_huge)
884 return q->n_win; /* must be power of 2 */
885
886 /* Otherwise, use normal size buffers */
887 return idx & (q->n_win - 1);
888 }
889
890 struct il_dma_ptr {
891 dma_addr_t dma;
892 void *addr;
893 size_t size;
894 };
895
896 #define IL_OPERATION_MODE_AUTO 0
897 #define IL_OPERATION_MODE_HT_ONLY 1
898 #define IL_OPERATION_MODE_MIXED 2
899 #define IL_OPERATION_MODE_20MHZ 3
900
901 #define IL_TX_CRC_SIZE 4
902 #define IL_TX_DELIMITER_SIZE 4
903
904 #define TX_POWER_IL_ILLEGAL_VOLTAGE -10000
905
906 /* Sensitivity and chain noise calibration */
907 #define INITIALIZATION_VALUE 0xFFFF
908 #define IL4965_CAL_NUM_BEACONS 20
909 #define IL_CAL_NUM_BEACONS 16
910 #define MAXIMUM_ALLOWED_PATHLOSS 15
911
912 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
913
914 #define MAX_FA_OFDM 50
915 #define MIN_FA_OFDM 5
916 #define MAX_FA_CCK 50
917 #define MIN_FA_CCK 5
918
919 #define AUTO_CORR_STEP_OFDM 1
920
921 #define AUTO_CORR_STEP_CCK 3
922 #define AUTO_CORR_MAX_TH_CCK 160
923
924 #define NRG_DIFF 2
925 #define NRG_STEP_CCK 2
926 #define NRG_MARGIN 8
927 #define MAX_NUMBER_CCK_NO_FA 100
928
929 #define AUTO_CORR_CCK_MIN_VAL_DEF (125)
930
931 #define CHAIN_A 0
932 #define CHAIN_B 1
933 #define CHAIN_C 2
934 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
935 #define ALL_BAND_FILTER 0xFF00
936 #define IN_BAND_FILTER 0xFF
937 #define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF
938
939 #define NRG_NUM_PREV_STAT_L 20
940 #define NUM_RX_CHAINS 3
941
942 enum il4965_false_alarm_state {
943 IL_FA_TOO_MANY = 0,
944 IL_FA_TOO_FEW = 1,
945 IL_FA_GOOD_RANGE = 2,
946 };
947
948 enum il4965_chain_noise_state {
949 IL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
950 IL_CHAIN_NOISE_ACCUMULATE,
951 IL_CHAIN_NOISE_CALIBRATED,
952 IL_CHAIN_NOISE_DONE,
953 };
954
955 enum ucode_type {
956 UCODE_NONE = 0,
957 UCODE_INIT,
958 UCODE_RT
959 };
960
961 /* Sensitivity calib data */
962 struct il_sensitivity_data {
963 u32 auto_corr_ofdm;
964 u32 auto_corr_ofdm_mrc;
965 u32 auto_corr_ofdm_x1;
966 u32 auto_corr_ofdm_mrc_x1;
967 u32 auto_corr_cck;
968 u32 auto_corr_cck_mrc;
969
970 u32 last_bad_plcp_cnt_ofdm;
971 u32 last_fa_cnt_ofdm;
972 u32 last_bad_plcp_cnt_cck;
973 u32 last_fa_cnt_cck;
974
975 u32 nrg_curr_state;
976 u32 nrg_prev_state;
977 u32 nrg_value[10];
978 u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
979 u32 nrg_silence_ref;
980 u32 nrg_energy_idx;
981 u32 nrg_silence_idx;
982 u32 nrg_th_cck;
983 s32 nrg_auto_corr_silence_diff;
984 u32 num_in_cck_no_fa;
985 u32 nrg_th_ofdm;
986
987 u16 barker_corr_th_min;
988 u16 barker_corr_th_min_mrc;
989 u16 nrg_th_cca;
990 };
991
992 /* Chain noise (differential Rx gain) calib data */
993 struct il_chain_noise_data {
994 u32 active_chains;
995 u32 chain_noise_a;
996 u32 chain_noise_b;
997 u32 chain_noise_c;
998 u32 chain_signal_a;
999 u32 chain_signal_b;
1000 u32 chain_signal_c;
1001 u16 beacon_count;
1002 u8 disconn_array[NUM_RX_CHAINS];
1003 u8 delta_gain_code[NUM_RX_CHAINS];
1004 u8 radio_write;
1005 u8 state;
1006 };
1007
1008 #define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
1009 #define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
1010
1011 #define IL_TRAFFIC_ENTRIES (256)
1012 #define IL_TRAFFIC_ENTRY_SIZE (64)
1013
1014 enum {
1015 MEASUREMENT_READY = (1 << 0),
1016 MEASUREMENT_ACTIVE = (1 << 1),
1017 };
1018
1019 /* interrupt stats */
1020 struct isr_stats {
1021 u32 hw;
1022 u32 sw;
1023 u32 err_code;
1024 u32 sch;
1025 u32 alive;
1026 u32 rfkill;
1027 u32 ctkill;
1028 u32 wakeup;
1029 u32 rx;
1030 u32 handlers[IL_CN_MAX];
1031 u32 tx;
1032 u32 unhandled;
1033 };
1034
1035 /* management stats */
1036 enum il_mgmt_stats {
1037 MANAGEMENT_ASSOC_REQ = 0,
1038 MANAGEMENT_ASSOC_RESP,
1039 MANAGEMENT_REASSOC_REQ,
1040 MANAGEMENT_REASSOC_RESP,
1041 MANAGEMENT_PROBE_REQ,
1042 MANAGEMENT_PROBE_RESP,
1043 MANAGEMENT_BEACON,
1044 MANAGEMENT_ATIM,
1045 MANAGEMENT_DISASSOC,
1046 MANAGEMENT_AUTH,
1047 MANAGEMENT_DEAUTH,
1048 MANAGEMENT_ACTION,
1049 MANAGEMENT_MAX,
1050 };
1051 /* control stats */
1052 enum il_ctrl_stats {
1053 CONTROL_BACK_REQ = 0,
1054 CONTROL_BACK,
1055 CONTROL_PSPOLL,
1056 CONTROL_RTS,
1057 CONTROL_CTS,
1058 CONTROL_ACK,
1059 CONTROL_CFEND,
1060 CONTROL_CFENDACK,
1061 CONTROL_MAX,
1062 };
1063
1064 struct traffic_stats {
1065 #ifdef CONFIG_IWLEGACY_DEBUGFS
1066 u32 mgmt[MANAGEMENT_MAX];
1067 u32 ctrl[CONTROL_MAX];
1068 u32 data_cnt;
1069 u64 data_bytes;
1070 #endif
1071 };
1072
1073 /*
1074 * host interrupt timeout value
1075 * used with setting interrupt coalescing timer
1076 * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit
1077 *
1078 * default interrupt coalescing timer is 64 x 32 = 2048 usecs
1079 * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs
1080 */
1081 #define IL_HOST_INT_TIMEOUT_MAX (0xFF)
1082 #define IL_HOST_INT_TIMEOUT_DEF (0x40)
1083 #define IL_HOST_INT_TIMEOUT_MIN (0x0)
1084 #define IL_HOST_INT_CALIB_TIMEOUT_MAX (0xFF)
1085 #define IL_HOST_INT_CALIB_TIMEOUT_DEF (0x10)
1086 #define IL_HOST_INT_CALIB_TIMEOUT_MIN (0x0)
1087
1088 #define IL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5)
1089
1090 /* TX queue watchdog timeouts in mSecs */
1091 #define IL_DEF_WD_TIMEOUT (2000)
1092 #define IL_LONG_WD_TIMEOUT (10000)
1093 #define IL_MAX_WD_TIMEOUT (120000)
1094
1095 struct il_force_reset {
1096 int reset_request_count;
1097 int reset_success_count;
1098 int reset_reject_count;
1099 unsigned long reset_duration;
1100 unsigned long last_force_reset_jiffies;
1101 };
1102
1103 /* extend beacon time format bit shifting */
1104 /*
1105 * for _3945 devices
1106 * bits 31:24 - extended
1107 * bits 23:0 - interval
1108 */
1109 #define IL3945_EXT_BEACON_TIME_POS 24
1110 /*
1111 * for _4965 devices
1112 * bits 31:22 - extended
1113 * bits 21:0 - interval
1114 */
1115 #define IL4965_EXT_BEACON_TIME_POS 22
1116
1117 struct il_rxon_context {
1118 struct ieee80211_vif *vif;
1119 };
1120
1121 struct il_power_mgr {
1122 struct il_powertable_cmd sleep_cmd;
1123 struct il_powertable_cmd sleep_cmd_next;
1124 int debug_sleep_level_override;
1125 bool pci_pm;
1126 bool ps_disabled;
1127 };
1128
1129 struct il_priv {
1130 struct ieee80211_hw *hw;
1131 struct ieee80211_channel *ieee_channels;
1132 struct ieee80211_rate *ieee_rates;
1133
1134 struct il_cfg *cfg;
1135 const struct il_ops *ops;
1136 #ifdef CONFIG_IWLEGACY_DEBUGFS
1137 const struct il_debugfs_ops *debugfs_ops;
1138 #endif
1139
1140 /* temporary frame storage list */
1141 struct list_head free_frames;
1142 int frames_count;
1143
1144 enum nl80211_band band;
1145 int alloc_rxb_page;
1146
1147 void (*handlers[IL_CN_MAX]) (struct il_priv *il,
1148 struct il_rx_buf *rxb);
1149
1150 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
1151
1152 /* spectrum measurement report caching */
1153 struct il_spectrum_notification measure_report;
1154 u8 measurement_status;
1155
1156 /* ucode beacon time */
1157 u32 ucode_beacon_time;
1158 int missed_beacon_threshold;
1159
1160 /* track IBSS manager (last beacon) status */
1161 u32 ibss_manager;
1162
1163 /* force reset */
1164 struct il_force_reset force_reset;
1165
1166 /* we allocate array of il_channel_info for NIC's valid channels.
1167 * Access via channel # using indirect idx array */
1168 struct il_channel_info *channel_info; /* channel info array */
1169 u8 channel_count; /* # of channels */
1170
1171 /* thermal calibration */
1172 s32 temperature; /* degrees Kelvin */
1173 s32 last_temperature;
1174
1175 /* Scan related variables */
1176 unsigned long scan_start;
1177 unsigned long scan_start_tsf;
1178 void *scan_cmd;
1179 enum nl80211_band scan_band;
1180 struct cfg80211_scan_request *scan_request;
1181 struct ieee80211_vif *scan_vif;
1182 u8 scan_tx_ant[NUM_NL80211_BANDS];
1183 u8 mgmt_tx_ant;
1184
1185 /* spinlock */
1186 spinlock_t lock; /* protect general shared data */
1187 spinlock_t hcmd_lock; /* protect hcmd */
1188 spinlock_t reg_lock; /* protect hw register access */
1189 struct mutex mutex;
1190
1191 /* basic pci-network driver stuff */
1192 struct pci_dev *pci_dev;
1193
1194 /* pci hardware address support */
1195 void __iomem *hw_base;
1196 u32 hw_rev;
1197 u32 hw_wa_rev;
1198 u8 rev_id;
1199
1200 /* command queue number */
1201 u8 cmd_queue;
1202
1203 /* max number of station keys */
1204 u8 sta_key_max_num;
1205
1206 /* EEPROM MAC addresses */
1207 struct mac_address addresses[1];
1208
1209 /* uCode images, save to reload in case of failure */
1210 int fw_idx; /* firmware we're trying to load */
1211 u32 ucode_ver; /* version of ucode, copy of
1212 il_ucode.ver */
1213 struct fw_desc ucode_code; /* runtime inst */
1214 struct fw_desc ucode_data; /* runtime data original */
1215 struct fw_desc ucode_data_backup; /* runtime data save/restore */
1216 struct fw_desc ucode_init; /* initialization inst */
1217 struct fw_desc ucode_init_data; /* initialization data */
1218 struct fw_desc ucode_boot; /* bootstrap inst */
1219 enum ucode_type ucode_type;
1220 u8 ucode_write_complete; /* the image write is complete */
1221 char firmware_name[25];
1222
1223 struct ieee80211_vif *vif;
1224
1225 struct il_qos_info qos_data;
1226
1227 struct {
1228 bool enabled;
1229 bool is_40mhz;
1230 bool non_gf_sta_present;
1231 u8 protection;
1232 u8 extension_chan_offset;
1233 } ht;
1234
1235 /*
1236 * We declare this const so it can only be
1237 * changed via explicit cast within the
1238 * routines that actually update the physical
1239 * hardware.
1240 */
1241 const struct il_rxon_cmd active;
1242 struct il_rxon_cmd staging;
1243
1244 struct il_rxon_time_cmd timing;
1245
1246 __le16 switch_channel;
1247
1248 /* 1st responses from initialize and runtime uCode images.
1249 * _4965's initialize alive response contains some calibration data. */
1250 struct il_init_alive_resp card_alive_init;
1251 struct il_alive_resp card_alive;
1252
1253 u16 active_rate;
1254
1255 u8 start_calib;
1256 struct il_sensitivity_data sensitivity_data;
1257 struct il_chain_noise_data chain_noise_data;
1258 __le16 sensitivity_tbl[HD_TBL_SIZE];
1259
1260 struct il_ht_config current_ht_config;
1261
1262 /* Rate scaling data */
1263 u8 retry_rate;
1264
1265 wait_queue_head_t wait_command_queue;
1266
1267 int activity_timer_active;
1268
1269 /* Rx and Tx DMA processing queues */
1270 struct il_rx_queue rxq;
1271 struct il_tx_queue *txq;
1272 unsigned long txq_ctx_active_msk;
1273 struct il_dma_ptr kw; /* keep warm address */
1274 struct il_dma_ptr scd_bc_tbls;
1275
1276 u32 scd_base_addr; /* scheduler sram base address */
1277
1278 unsigned long status;
1279
1280 /* counts mgmt, ctl, and data packets */
1281 struct traffic_stats tx_stats;
1282 struct traffic_stats rx_stats;
1283
1284 /* counts interrupts */
1285 struct isr_stats isr_stats;
1286
1287 struct il_power_mgr power_data;
1288
1289 /* context information */
1290 u8 bssid[ETH_ALEN]; /* used only on 3945 but filled by core */
1291
1292 /* station table variables */
1293
1294 /* Note: if lock and sta_lock are needed, lock must be acquired first */
1295 spinlock_t sta_lock;
1296 int num_stations;
1297 struct il_station_entry stations[IL_STATION_COUNT];
1298 unsigned long ucode_key_table;
1299
1300 /* queue refcounts */
1301 #define IL_MAX_HW_QUEUES 32
1302 unsigned long queue_stopped[BITS_TO_LONGS(IL_MAX_HW_QUEUES)];
1303 #define IL_STOP_REASON_PASSIVE 0
1304 unsigned long stop_reason;
1305 /* for each AC */
1306 atomic_t queue_stop_count[4];
1307
1308 /* Indication if ieee80211_ops->open has been called */
1309 u8 is_open;
1310
1311 u8 mac80211_registered;
1312
1313 /* eeprom -- this is in the card's little endian byte order */
1314 u8 *eeprom;
1315 struct il_eeprom_calib_info *calib_info;
1316
1317 enum nl80211_iftype iw_mode;
1318
1319 /* Last Rx'd beacon timestamp */
1320 u64 timestamp;
1321
1322 union {
1323 #if IS_ENABLED(CONFIG_IWL3945)
1324 struct {
1325 void *shared_virt;
1326 dma_addr_t shared_phys;
1327
1328 struct delayed_work thermal_periodic;
1329 struct delayed_work rfkill_poll;
1330
1331 struct il3945_notif_stats stats;
1332 #ifdef CONFIG_IWLEGACY_DEBUGFS
1333 struct il3945_notif_stats accum_stats;
1334 struct il3945_notif_stats delta_stats;
1335 struct il3945_notif_stats max_delta;
1336 #endif
1337
1338 u32 sta_supp_rates;
1339 int last_rx_rssi; /* From Rx packet stats */
1340
1341 /* Rx'd packet timing information */
1342 u32 last_beacon_time;
1343 u64 last_tsf;
1344
1345 /*
1346 * each calibration channel group in the
1347 * EEPROM has a derived clip setting for
1348 * each rate.
1349 */
1350 const struct il3945_clip_group clip_groups[5];
1351
1352 } _3945;
1353 #endif
1354 #if IS_ENABLED(CONFIG_IWL4965)
1355 struct {
1356 struct il_rx_phy_res last_phy_res;
1357 bool last_phy_res_valid;
1358 u32 ampdu_ref;
1359
1360 struct completion firmware_loading_complete;
1361
1362 /*
1363 * chain noise reset and gain commands are the
1364 * two extra calibration commands follows the standard
1365 * phy calibration commands
1366 */
1367 u8 phy_calib_chain_noise_reset_cmd;
1368 u8 phy_calib_chain_noise_gain_cmd;
1369
1370 u8 key_mapping_keys;
1371 struct il_wep_key wep_keys[WEP_KEYS_MAX];
1372
1373 struct il_notif_stats stats;
1374 #ifdef CONFIG_IWLEGACY_DEBUGFS
1375 struct il_notif_stats accum_stats;
1376 struct il_notif_stats delta_stats;
1377 struct il_notif_stats max_delta;
1378 #endif
1379
1380 } _4965;
1381 #endif
1382 };
1383
1384 struct il_hw_params hw_params;
1385
1386 u32 inta_mask;
1387
1388 struct workqueue_struct *workqueue;
1389
1390 struct work_struct restart;
1391 struct work_struct scan_completed;
1392 struct work_struct rx_replenish;
1393 struct work_struct abort_scan;
1394
1395 bool beacon_enabled;
1396 struct sk_buff *beacon_skb;
1397
1398 struct work_struct tx_flush;
1399
1400 struct tasklet_struct irq_tasklet;
1401
1402 struct delayed_work init_alive_start;
1403 struct delayed_work alive_start;
1404 struct delayed_work scan_check;
1405
1406 /* TX Power */
1407 s8 tx_power_user_lmt;
1408 s8 tx_power_device_lmt;
1409 s8 tx_power_next;
1410
1411 #ifdef CONFIG_IWLEGACY_DEBUG
1412 /* debugging info */
1413 u32 debug_level; /* per device debugging will override global
1414 il_debug_level if set */
1415 #endif /* CONFIG_IWLEGACY_DEBUG */
1416 #ifdef CONFIG_IWLEGACY_DEBUGFS
1417 /* debugfs */
1418 u16 tx_traffic_idx;
1419 u16 rx_traffic_idx;
1420 u8 *tx_traffic;
1421 u8 *rx_traffic;
1422 struct dentry *debugfs_dir;
1423 u32 dbgfs_sram_offset, dbgfs_sram_len;
1424 bool disable_ht40;
1425 #endif /* CONFIG_IWLEGACY_DEBUGFS */
1426
1427 struct work_struct txpower_work;
1428 bool disable_sens_cal;
1429 bool disable_chain_noise_cal;
1430 bool disable_tx_power_cal;
1431 struct work_struct run_time_calib_work;
1432 struct timer_list stats_periodic;
1433 struct timer_list watchdog;
1434 bool hw_ready;
1435
1436 struct led_classdev led;
1437 unsigned long blink_on, blink_off;
1438 bool led_registered;
1439 }; /*il_priv */
1440
1441 static inline void
il_txq_ctx_activate(struct il_priv * il,int txq_id)1442 il_txq_ctx_activate(struct il_priv *il, int txq_id)
1443 {
1444 set_bit(txq_id, &il->txq_ctx_active_msk);
1445 }
1446
1447 static inline void
il_txq_ctx_deactivate(struct il_priv * il,int txq_id)1448 il_txq_ctx_deactivate(struct il_priv *il, int txq_id)
1449 {
1450 clear_bit(txq_id, &il->txq_ctx_active_msk);
1451 }
1452
1453 static inline int
il_is_associated(struct il_priv * il)1454 il_is_associated(struct il_priv *il)
1455 {
1456 return (il->active.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1457 }
1458
1459 static inline int
il_is_any_associated(struct il_priv * il)1460 il_is_any_associated(struct il_priv *il)
1461 {
1462 return il_is_associated(il);
1463 }
1464
1465 static inline int
il_is_channel_valid(const struct il_channel_info * ch_info)1466 il_is_channel_valid(const struct il_channel_info *ch_info)
1467 {
1468 if (ch_info == NULL)
1469 return 0;
1470 return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1471 }
1472
1473 static inline int
il_is_channel_radar(const struct il_channel_info * ch_info)1474 il_is_channel_radar(const struct il_channel_info *ch_info)
1475 {
1476 return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1477 }
1478
1479 static inline u8
il_is_channel_a_band(const struct il_channel_info * ch_info)1480 il_is_channel_a_band(const struct il_channel_info *ch_info)
1481 {
1482 return ch_info->band == NL80211_BAND_5GHZ;
1483 }
1484
1485 static inline int
il_is_channel_passive(const struct il_channel_info * ch)1486 il_is_channel_passive(const struct il_channel_info *ch)
1487 {
1488 return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1489 }
1490
1491 static inline int
il_is_channel_ibss(const struct il_channel_info * ch)1492 il_is_channel_ibss(const struct il_channel_info *ch)
1493 {
1494 return (ch->flags & EEPROM_CHANNEL_IBSS) ? 1 : 0;
1495 }
1496
1497 static inline void
__il_free_pages(struct il_priv * il,struct page * page)1498 __il_free_pages(struct il_priv *il, struct page *page)
1499 {
1500 __free_pages(page, il->hw_params.rx_page_order);
1501 il->alloc_rxb_page--;
1502 }
1503
1504 static inline void
il_free_pages(struct il_priv * il,unsigned long page)1505 il_free_pages(struct il_priv *il, unsigned long page)
1506 {
1507 free_pages(page, il->hw_params.rx_page_order);
1508 il->alloc_rxb_page--;
1509 }
1510
1511 #define IWLWIFI_VERSION "in-tree:"
1512 #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
1513 #define DRV_AUTHOR "<ilw@linux.intel.com>"
1514
1515 #define IL_PCI_DEVICE(dev, subdev, cfg) \
1516 .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \
1517 .subvendor = PCI_ANY_ID, .subdevice = (subdev), \
1518 .driver_data = (kernel_ulong_t)&(cfg)
1519
1520 #define TIME_UNIT 1024
1521
1522 #define IL_SKU_G 0x1
1523 #define IL_SKU_A 0x2
1524 #define IL_SKU_N 0x8
1525
1526 #define IL_CMD(x) case x: return #x
1527
1528 /* Size of one Rx buffer in host DRAM */
1529 #define IL_RX_BUF_SIZE_3K (3 * 1000) /* 3945 only */
1530 #define IL_RX_BUF_SIZE_4K (4 * 1024)
1531 #define IL_RX_BUF_SIZE_8K (8 * 1024)
1532
1533 #ifdef CONFIG_IWLEGACY_DEBUGFS
1534 struct il_debugfs_ops {
1535 ssize_t(*rx_stats_read) (struct file *file, char __user *user_buf,
1536 size_t count, loff_t *ppos);
1537 ssize_t(*tx_stats_read) (struct file *file, char __user *user_buf,
1538 size_t count, loff_t *ppos);
1539 ssize_t(*general_stats_read) (struct file *file,
1540 char __user *user_buf, size_t count,
1541 loff_t *ppos);
1542 };
1543 #endif
1544
1545 struct il_ops {
1546 /* Handling TX */
1547 void (*txq_update_byte_cnt_tbl) (struct il_priv *il,
1548 struct il_tx_queue *txq,
1549 u16 byte_cnt);
1550 int (*txq_attach_buf_to_tfd) (struct il_priv *il,
1551 struct il_tx_queue *txq, dma_addr_t addr,
1552 u16 len, u8 reset, u8 pad);
1553 void (*txq_free_tfd) (struct il_priv *il, struct il_tx_queue *txq);
1554 int (*txq_init) (struct il_priv *il, struct il_tx_queue *txq);
1555 /* alive notification after init uCode load */
1556 void (*init_alive_start) (struct il_priv *il);
1557 /* check validity of rtc data address */
1558 int (*is_valid_rtc_data_addr) (u32 addr);
1559 /* 1st ucode load */
1560 int (*load_ucode) (struct il_priv *il);
1561
1562 void (*dump_nic_error_log) (struct il_priv *il);
1563 int (*dump_fh) (struct il_priv *il, char **buf, bool display);
1564 int (*set_channel_switch) (struct il_priv *il,
1565 struct ieee80211_channel_switch *ch_switch);
1566 /* power management */
1567 int (*apm_init) (struct il_priv *il);
1568
1569 /* tx power */
1570 int (*send_tx_power) (struct il_priv *il);
1571 void (*update_chain_flags) (struct il_priv *il);
1572
1573 /* eeprom operations */
1574 int (*eeprom_acquire_semaphore) (struct il_priv *il);
1575 void (*eeprom_release_semaphore) (struct il_priv *il);
1576
1577 int (*rxon_assoc) (struct il_priv *il);
1578 int (*commit_rxon) (struct il_priv *il);
1579 void (*set_rxon_chain) (struct il_priv *il);
1580
1581 u16(*get_hcmd_size) (u8 cmd_id, u16 len);
1582 u16(*build_addsta_hcmd) (const struct il_addsta_cmd *cmd, u8 *data);
1583
1584 int (*request_scan) (struct il_priv *il, struct ieee80211_vif *vif);
1585 void (*post_scan) (struct il_priv *il);
1586 void (*post_associate) (struct il_priv *il);
1587 void (*config_ap) (struct il_priv *il);
1588 /* station management */
1589 int (*update_bcast_stations) (struct il_priv *il);
1590 int (*manage_ibss_station) (struct il_priv *il,
1591 struct ieee80211_vif *vif, bool add);
1592
1593 int (*send_led_cmd) (struct il_priv *il, struct il_led_cmd *led_cmd);
1594 };
1595
1596 struct il_mod_params {
1597 int sw_crypto; /* def: 0 = using hardware encryption */
1598 int disable_hw_scan; /* def: 0 = use h/w scan */
1599 int num_of_queues; /* def: HW dependent */
1600 int disable_11n; /* def: 0 = 11n capabilities enabled */
1601 int amsdu_size_8K; /* def: 0 = disable 8K amsdu size */
1602 int antenna; /* def: 0 = both antennas (use diversity) */
1603 int restart_fw; /* def: 1 = restart firmware */
1604 };
1605
1606 #define IL_LED_SOLID 11
1607 #define IL_DEF_LED_INTRVL cpu_to_le32(1000)
1608
1609 #define IL_LED_ACTIVITY (0<<1)
1610 #define IL_LED_LINK (1<<1)
1611
1612 /*
1613 * LED mode
1614 * IL_LED_DEFAULT: use device default
1615 * IL_LED_RF_STATE: turn LED on/off based on RF state
1616 * LED ON = RF ON
1617 * LED OFF = RF OFF
1618 * IL_LED_BLINK: adjust led blink rate based on blink table
1619 */
1620 enum il_led_mode {
1621 IL_LED_DEFAULT,
1622 IL_LED_RF_STATE,
1623 IL_LED_BLINK,
1624 };
1625
1626 void il_leds_init(struct il_priv *il);
1627 void il_leds_exit(struct il_priv *il);
1628
1629 /**
1630 * struct il_cfg
1631 * @fw_name_pre: Firmware filename prefix. The api version and extension
1632 * (.ucode) will be added to filename before loading from disk. The
1633 * filename is constructed as fw_name_pre<api>.ucode.
1634 * @ucode_api_max: Highest version of uCode API supported by driver.
1635 * @ucode_api_min: Lowest version of uCode API supported by driver.
1636 * @scan_antennas: available antenna for scan operation
1637 * @led_mode: 0=blinking, 1=On(RF On)/Off(RF Off)
1638 *
1639 * We enable the driver to be backward compatible wrt API version. The
1640 * driver specifies which APIs it supports (with @ucode_api_max being the
1641 * highest and @ucode_api_min the lowest). Firmware will only be loaded if
1642 * it has a supported API version. The firmware's API version will be
1643 * stored in @il_priv, enabling the driver to make runtime changes based
1644 * on firmware version used.
1645 *
1646 * For example,
1647 * if (IL_UCODE_API(il->ucode_ver) >= 2) {
1648 * Driver interacts with Firmware API version >= 2.
1649 * } else {
1650 * Driver interacts with Firmware API version 1.
1651 * }
1652 *
1653 * The ideal usage of this infrastructure is to treat a new ucode API
1654 * release as a new hardware revision. That is, through utilizing the
1655 * il_hcmd_utils_ops etc. we accommodate different command structures
1656 * and flows between hardware versions as well as their API
1657 * versions.
1658 *
1659 */
1660 struct il_cfg {
1661 /* params specific to an individual device within a device family */
1662 const char *name;
1663 const char *fw_name_pre;
1664 const unsigned int ucode_api_max;
1665 const unsigned int ucode_api_min;
1666 u8 valid_tx_ant;
1667 u8 valid_rx_ant;
1668 unsigned int sku;
1669 u16 eeprom_ver;
1670 u16 eeprom_calib_ver;
1671 /* module based parameters which can be set from modprobe cmd */
1672 const struct il_mod_params *mod_params;
1673 /* params not likely to change within a device family */
1674 struct il_base_params *base_params;
1675 /* params likely to change within a device family */
1676 u8 scan_rx_antennas[NUM_NL80211_BANDS];
1677 enum il_led_mode led_mode;
1678
1679 int eeprom_size;
1680 int num_of_queues; /* def: HW dependent */
1681 int num_of_ampdu_queues; /* def: HW dependent */
1682 /* for il_apm_init() */
1683 u32 pll_cfg_val;
1684 bool set_l0s;
1685 bool use_bsm;
1686
1687 u16 led_compensation;
1688 int chain_noise_num_beacons;
1689 unsigned int wd_timeout;
1690 bool temperature_kelvin;
1691 const bool ucode_tracing;
1692 const bool sensitivity_calib_by_driver;
1693 const bool chain_noise_calib_by_driver;
1694
1695 const u32 regulatory_bands[7];
1696 };
1697
1698 /***************************
1699 * L i b *
1700 ***************************/
1701
1702 int il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1703 u16 queue, const struct ieee80211_tx_queue_params *params);
1704 int il_mac_tx_last_beacon(struct ieee80211_hw *hw);
1705
1706 void il_set_rxon_hwcrypto(struct il_priv *il, int hw_decrypt);
1707 int il_check_rxon_cmd(struct il_priv *il);
1708 int il_full_rxon_required(struct il_priv *il);
1709 int il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch);
1710 void il_set_flags_for_band(struct il_priv *il, enum nl80211_band band,
1711 struct ieee80211_vif *vif);
1712 u8 il_get_single_channel_number(struct il_priv *il, enum nl80211_band band);
1713 void il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf);
1714 bool il_is_ht40_tx_allowed(struct il_priv *il,
1715 struct ieee80211_sta_ht_cap *ht_cap);
1716 void il_connection_init_rx_config(struct il_priv *il);
1717 void il_set_rate(struct il_priv *il);
1718 int il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr,
1719 u32 decrypt_res, struct ieee80211_rx_status *stats);
1720 void il_irq_handle_error(struct il_priv *il);
1721 int il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
1722 void il_mac_remove_interface(struct ieee80211_hw *hw,
1723 struct ieee80211_vif *vif);
1724 int il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1725 enum nl80211_iftype newtype, bool newp2p);
1726 void il_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1727 u32 queues, bool drop);
1728 int il_alloc_txq_mem(struct il_priv *il);
1729 void il_free_txq_mem(struct il_priv *il);
1730
1731 #ifdef CONFIG_IWLEGACY_DEBUGFS
1732 void il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len);
1733 #else
1734 static inline void
il_update_stats(struct il_priv * il,bool is_tx,__le16 fc,u16 len)1735 il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len)
1736 {
1737 }
1738 #endif
1739
1740 /*****************************************************
1741 * Handlers
1742 ***************************************************/
1743 void il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb);
1744 void il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb);
1745 void il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb);
1746 void il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb);
1747
1748 /*****************************************************
1749 * RX
1750 ******************************************************/
1751 void il_cmd_queue_unmap(struct il_priv *il);
1752 void il_cmd_queue_free(struct il_priv *il);
1753 int il_rx_queue_alloc(struct il_priv *il);
1754 void il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q);
1755 int il_rx_queue_space(const struct il_rx_queue *q);
1756 void il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb);
1757
1758 void il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb);
1759 void il_recover_from_stats(struct il_priv *il, struct il_rx_pkt *pkt);
1760 void il_chswitch_done(struct il_priv *il, bool is_success);
1761
1762 /*****************************************************
1763 * TX
1764 ******************************************************/
1765 void il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq);
1766 int il_tx_queue_init(struct il_priv *il, u32 txq_id);
1767 void il_tx_queue_reset(struct il_priv *il, u32 txq_id);
1768 void il_tx_queue_unmap(struct il_priv *il, int txq_id);
1769 void il_tx_queue_free(struct il_priv *il, int txq_id);
1770 void il_setup_watchdog(struct il_priv *il);
1771 /*****************************************************
1772 * TX power
1773 ****************************************************/
1774 int il_set_tx_power(struct il_priv *il, s8 tx_power, bool force);
1775
1776 /*******************************************************************************
1777 * Rate
1778 ******************************************************************************/
1779
1780 u8 il_get_lowest_plcp(struct il_priv *il);
1781
1782 /*******************************************************************************
1783 * Scanning
1784 ******************************************************************************/
1785 void il_init_scan_params(struct il_priv *il);
1786 int il_scan_cancel(struct il_priv *il);
1787 int il_scan_cancel_timeout(struct il_priv *il, unsigned long ms);
1788 void il_force_scan_end(struct il_priv *il);
1789 int il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1790 struct ieee80211_scan_request *hw_req);
1791 void il_internal_short_hw_scan(struct il_priv *il);
1792 int il_force_reset(struct il_priv *il, bool external);
1793 u16 il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame,
1794 const u8 *ta, const u8 *ie, int ie_len, int left);
1795 void il_setup_rx_scan_handlers(struct il_priv *il);
1796 u16 il_get_active_dwell_time(struct il_priv *il, enum nl80211_band band,
1797 u8 n_probes);
1798 u16 il_get_passive_dwell_time(struct il_priv *il, enum nl80211_band band,
1799 struct ieee80211_vif *vif);
1800 void il_setup_scan_deferred_work(struct il_priv *il);
1801 void il_cancel_scan_deferred_work(struct il_priv *il);
1802
1803 /* For faster active scanning, scan will move to the next channel if fewer than
1804 * PLCP_QUIET_THRESH packets are heard on this channel within
1805 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
1806 * time if it's a quiet channel (nothing responded to our probe, and there's
1807 * no other traffic).
1808 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
1809 #define IL_ACTIVE_QUIET_TIME cpu_to_le16(10) /* msec */
1810 #define IL_PLCP_QUIET_THRESH cpu_to_le16(1) /* packets */
1811
1812 #define IL_SCAN_CHECK_WATCHDOG (HZ * 7)
1813
1814 /*****************************************************
1815 * S e n d i n g H o s t C o m m a n d s *
1816 *****************************************************/
1817
1818 const char *il_get_cmd_string(u8 cmd);
1819 int __must_check il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd);
1820 int il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd);
1821 int __must_check il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len,
1822 const void *data);
1823 int il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data,
1824 void (*callback) (struct il_priv *il,
1825 struct il_device_cmd *cmd,
1826 struct il_rx_pkt *pkt));
1827
1828 int il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd);
1829
1830 /*****************************************************
1831 * PCI *
1832 *****************************************************/
1833
1834 void il_bg_watchdog(unsigned long data);
1835 u32 il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval);
1836 __le32 il_add_beacon_time(struct il_priv *il, u32 base, u32 addon,
1837 u32 beacon_interval);
1838
1839 #ifdef CONFIG_PM_SLEEP
1840 extern const struct dev_pm_ops il_pm_ops;
1841
1842 #define IL_LEGACY_PM_OPS (&il_pm_ops)
1843
1844 #else /* !CONFIG_PM_SLEEP */
1845
1846 #define IL_LEGACY_PM_OPS NULL
1847
1848 #endif /* !CONFIG_PM_SLEEP */
1849
1850 /*****************************************************
1851 * Error Handling Debugging
1852 ******************************************************/
1853 void il4965_dump_nic_error_log(struct il_priv *il);
1854 #ifdef CONFIG_IWLEGACY_DEBUG
1855 void il_print_rx_config_cmd(struct il_priv *il);
1856 #else
1857 static inline void
il_print_rx_config_cmd(struct il_priv * il)1858 il_print_rx_config_cmd(struct il_priv *il)
1859 {
1860 }
1861 #endif
1862
1863 void il_clear_isr_stats(struct il_priv *il);
1864
1865 /*****************************************************
1866 * GEOS
1867 ******************************************************/
1868 int il_init_geos(struct il_priv *il);
1869 void il_free_geos(struct il_priv *il);
1870
1871 /*************** DRIVER STATUS FUNCTIONS *****/
1872
1873 #define S_HCMD_ACTIVE 0 /* host command in progress */
1874 /* 1 is unused (used to be S_HCMD_SYNC_ACTIVE) */
1875 #define S_INT_ENABLED 2
1876 #define S_RFKILL 3
1877 #define S_CT_KILL 4
1878 #define S_INIT 5
1879 #define S_ALIVE 6
1880 #define S_READY 7
1881 #define S_TEMPERATURE 8
1882 #define S_GEO_CONFIGURED 9
1883 #define S_EXIT_PENDING 10
1884 #define S_STATS 12
1885 #define S_SCANNING 13
1886 #define S_SCAN_ABORTING 14
1887 #define S_SCAN_HW 15
1888 #define S_POWER_PMI 16
1889 #define S_FW_ERROR 17
1890 #define S_CHANNEL_SWITCH_PENDING 18
1891
1892 static inline int
il_is_ready(struct il_priv * il)1893 il_is_ready(struct il_priv *il)
1894 {
1895 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
1896 * set but EXIT_PENDING is not */
1897 return test_bit(S_READY, &il->status) &&
1898 test_bit(S_GEO_CONFIGURED, &il->status) &&
1899 !test_bit(S_EXIT_PENDING, &il->status);
1900 }
1901
1902 static inline int
il_is_alive(struct il_priv * il)1903 il_is_alive(struct il_priv *il)
1904 {
1905 return test_bit(S_ALIVE, &il->status);
1906 }
1907
1908 static inline int
il_is_init(struct il_priv * il)1909 il_is_init(struct il_priv *il)
1910 {
1911 return test_bit(S_INIT, &il->status);
1912 }
1913
1914 static inline int
il_is_rfkill(struct il_priv * il)1915 il_is_rfkill(struct il_priv *il)
1916 {
1917 return test_bit(S_RFKILL, &il->status);
1918 }
1919
1920 static inline int
il_is_ctkill(struct il_priv * il)1921 il_is_ctkill(struct il_priv *il)
1922 {
1923 return test_bit(S_CT_KILL, &il->status);
1924 }
1925
1926 static inline int
il_is_ready_rf(struct il_priv * il)1927 il_is_ready_rf(struct il_priv *il)
1928 {
1929
1930 if (il_is_rfkill(il))
1931 return 0;
1932
1933 return il_is_ready(il);
1934 }
1935
1936 void il_send_bt_config(struct il_priv *il);
1937 int il_send_stats_request(struct il_priv *il, u8 flags, bool clear);
1938 void il_apm_stop(struct il_priv *il);
1939 void _il_apm_stop(struct il_priv *il);
1940
1941 int il_apm_init(struct il_priv *il);
1942
1943 int il_send_rxon_timing(struct il_priv *il);
1944
1945 static inline int
il_send_rxon_assoc(struct il_priv * il)1946 il_send_rxon_assoc(struct il_priv *il)
1947 {
1948 return il->ops->rxon_assoc(il);
1949 }
1950
1951 static inline int
il_commit_rxon(struct il_priv * il)1952 il_commit_rxon(struct il_priv *il)
1953 {
1954 return il->ops->commit_rxon(il);
1955 }
1956
1957 static inline const struct ieee80211_supported_band *
il_get_hw_mode(struct il_priv * il,enum nl80211_band band)1958 il_get_hw_mode(struct il_priv *il, enum nl80211_band band)
1959 {
1960 return il->hw->wiphy->bands[band];
1961 }
1962
1963 /* mac80211 handlers */
1964 int il_mac_config(struct ieee80211_hw *hw, u32 changed);
1965 void il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
1966 void il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1967 struct ieee80211_bss_conf *bss_conf, u32 changes);
1968 void il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info,
1969 __le16 fc, __le32 *tx_flags);
1970
1971 irqreturn_t il_isr(int irq, void *data);
1972
1973 void il_set_bit(struct il_priv *p, u32 r, u32 m);
1974 void il_clear_bit(struct il_priv *p, u32 r, u32 m);
1975 bool _il_grab_nic_access(struct il_priv *il);
1976 int _il_poll_bit(struct il_priv *il, u32 addr, u32 bits, u32 mask, int timeout);
1977 int il_poll_bit(struct il_priv *il, u32 addr, u32 mask, int timeout);
1978 u32 il_rd_prph(struct il_priv *il, u32 reg);
1979 void il_wr_prph(struct il_priv *il, u32 addr, u32 val);
1980 u32 il_read_targ_mem(struct il_priv *il, u32 addr);
1981 void il_write_targ_mem(struct il_priv *il, u32 addr, u32 val);
1982
il_need_reclaim(struct il_priv * il,struct il_rx_pkt * pkt)1983 static inline bool il_need_reclaim(struct il_priv *il, struct il_rx_pkt *pkt)
1984 {
1985 /* Reclaim a command buffer only if this packet is a response
1986 * to a (driver-originated) command. If the packet (e.g. Rx frame)
1987 * originated from uCode, there is no command buffer to reclaim.
1988 * Ucode should set SEQ_RX_FRAME bit if ucode-originated, but
1989 * apparently a few don't get set; catch them here.
1990 */
1991 return !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1992 pkt->hdr.cmd != N_STATS && pkt->hdr.cmd != C_TX &&
1993 pkt->hdr.cmd != N_RX_PHY && pkt->hdr.cmd != N_RX &&
1994 pkt->hdr.cmd != N_RX_MPDU && pkt->hdr.cmd != N_COMPRESSED_BA;
1995 }
1996
1997 static inline void
_il_write8(struct il_priv * il,u32 ofs,u8 val)1998 _il_write8(struct il_priv *il, u32 ofs, u8 val)
1999 {
2000 writeb(val, il->hw_base + ofs);
2001 }
2002 #define il_write8(il, ofs, val) _il_write8(il, ofs, val)
2003
2004 static inline void
_il_wr(struct il_priv * il,u32 ofs,u32 val)2005 _il_wr(struct il_priv *il, u32 ofs, u32 val)
2006 {
2007 writel(val, il->hw_base + ofs);
2008 }
2009
2010 static inline u32
_il_rd(struct il_priv * il,u32 ofs)2011 _il_rd(struct il_priv *il, u32 ofs)
2012 {
2013 return readl(il->hw_base + ofs);
2014 }
2015
2016 static inline void
_il_clear_bit(struct il_priv * il,u32 reg,u32 mask)2017 _il_clear_bit(struct il_priv *il, u32 reg, u32 mask)
2018 {
2019 _il_wr(il, reg, _il_rd(il, reg) & ~mask);
2020 }
2021
2022 static inline void
_il_set_bit(struct il_priv * il,u32 reg,u32 mask)2023 _il_set_bit(struct il_priv *il, u32 reg, u32 mask)
2024 {
2025 _il_wr(il, reg, _il_rd(il, reg) | mask);
2026 }
2027
2028 static inline void
_il_release_nic_access(struct il_priv * il)2029 _il_release_nic_access(struct il_priv *il)
2030 {
2031 _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2032 /*
2033 * In above we are reading CSR_GP_CNTRL register, what will flush any
2034 * previous writes, but still want write, which clear MAC_ACCESS_REQ
2035 * bit, be performed on PCI bus before any other writes scheduled on
2036 * different CPUs (after we drop reg_lock).
2037 */
2038 mmiowb();
2039 }
2040
2041 static inline u32
il_rd(struct il_priv * il,u32 reg)2042 il_rd(struct il_priv *il, u32 reg)
2043 {
2044 u32 value;
2045 unsigned long reg_flags;
2046
2047 spin_lock_irqsave(&il->reg_lock, reg_flags);
2048 _il_grab_nic_access(il);
2049 value = _il_rd(il, reg);
2050 _il_release_nic_access(il);
2051 spin_unlock_irqrestore(&il->reg_lock, reg_flags);
2052 return value;
2053 }
2054
2055 static inline void
il_wr(struct il_priv * il,u32 reg,u32 value)2056 il_wr(struct il_priv *il, u32 reg, u32 value)
2057 {
2058 unsigned long reg_flags;
2059
2060 spin_lock_irqsave(&il->reg_lock, reg_flags);
2061 if (likely(_il_grab_nic_access(il))) {
2062 _il_wr(il, reg, value);
2063 _il_release_nic_access(il);
2064 }
2065 spin_unlock_irqrestore(&il->reg_lock, reg_flags);
2066 }
2067
2068 static inline u32
_il_rd_prph(struct il_priv * il,u32 reg)2069 _il_rd_prph(struct il_priv *il, u32 reg)
2070 {
2071 _il_wr(il, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
2072 return _il_rd(il, HBUS_TARG_PRPH_RDAT);
2073 }
2074
2075 static inline void
_il_wr_prph(struct il_priv * il,u32 addr,u32 val)2076 _il_wr_prph(struct il_priv *il, u32 addr, u32 val)
2077 {
2078 _il_wr(il, HBUS_TARG_PRPH_WADDR, ((addr & 0x0000FFFF) | (3 << 24)));
2079 _il_wr(il, HBUS_TARG_PRPH_WDAT, val);
2080 }
2081
2082 static inline void
il_set_bits_prph(struct il_priv * il,u32 reg,u32 mask)2083 il_set_bits_prph(struct il_priv *il, u32 reg, u32 mask)
2084 {
2085 unsigned long reg_flags;
2086
2087 spin_lock_irqsave(&il->reg_lock, reg_flags);
2088 if (likely(_il_grab_nic_access(il))) {
2089 _il_wr_prph(il, reg, (_il_rd_prph(il, reg) | mask));
2090 _il_release_nic_access(il);
2091 }
2092 spin_unlock_irqrestore(&il->reg_lock, reg_flags);
2093 }
2094
2095 static inline void
il_set_bits_mask_prph(struct il_priv * il,u32 reg,u32 bits,u32 mask)2096 il_set_bits_mask_prph(struct il_priv *il, u32 reg, u32 bits, u32 mask)
2097 {
2098 unsigned long reg_flags;
2099
2100 spin_lock_irqsave(&il->reg_lock, reg_flags);
2101 if (likely(_il_grab_nic_access(il))) {
2102 _il_wr_prph(il, reg, ((_il_rd_prph(il, reg) & mask) | bits));
2103 _il_release_nic_access(il);
2104 }
2105 spin_unlock_irqrestore(&il->reg_lock, reg_flags);
2106 }
2107
2108 static inline void
il_clear_bits_prph(struct il_priv * il,u32 reg,u32 mask)2109 il_clear_bits_prph(struct il_priv *il, u32 reg, u32 mask)
2110 {
2111 unsigned long reg_flags;
2112 u32 val;
2113
2114 spin_lock_irqsave(&il->reg_lock, reg_flags);
2115 if (likely(_il_grab_nic_access(il))) {
2116 val = _il_rd_prph(il, reg);
2117 _il_wr_prph(il, reg, (val & ~mask));
2118 _il_release_nic_access(il);
2119 }
2120 spin_unlock_irqrestore(&il->reg_lock, reg_flags);
2121 }
2122
2123 #define HW_KEY_DYNAMIC 0
2124 #define HW_KEY_DEFAULT 1
2125
2126 #define IL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
2127 #define IL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
2128 #define IL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of
2129 being activated */
2130 #define IL_STA_LOCAL BIT(3) /* station state not directed by mac80211;
2131 (this is for the IBSS BSSID stations) */
2132 #define IL_STA_BCAST BIT(4) /* this station is the special bcast station */
2133
2134 void il_restore_stations(struct il_priv *il);
2135 void il_clear_ucode_stations(struct il_priv *il);
2136 void il_dealloc_bcast_stations(struct il_priv *il);
2137 int il_get_free_ucode_key_idx(struct il_priv *il);
2138 int il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags);
2139 int il_add_station_common(struct il_priv *il, const u8 *addr, bool is_ap,
2140 struct ieee80211_sta *sta, u8 *sta_id_r);
2141 int il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr);
2142 int il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2143 struct ieee80211_sta *sta);
2144
2145 u8 il_prep_station(struct il_priv *il, const u8 *addr, bool is_ap,
2146 struct ieee80211_sta *sta);
2147
2148 int il_send_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq,
2149 u8 flags, bool init);
2150
2151 /**
2152 * il_clear_driver_stations - clear knowledge of all stations from driver
2153 * @il: iwl il struct
2154 *
2155 * This is called during il_down() to make sure that in the case
2156 * we're coming there from a hardware restart mac80211 will be
2157 * able to reconfigure stations -- if we're getting there in the
2158 * normal down flow then the stations will already be cleared.
2159 */
2160 static inline void
il_clear_driver_stations(struct il_priv * il)2161 il_clear_driver_stations(struct il_priv *il)
2162 {
2163 unsigned long flags;
2164
2165 spin_lock_irqsave(&il->sta_lock, flags);
2166 memset(il->stations, 0, sizeof(il->stations));
2167 il->num_stations = 0;
2168 il->ucode_key_table = 0;
2169 spin_unlock_irqrestore(&il->sta_lock, flags);
2170 }
2171
2172 static inline int
il_sta_id(struct ieee80211_sta * sta)2173 il_sta_id(struct ieee80211_sta *sta)
2174 {
2175 if (WARN_ON(!sta))
2176 return IL_INVALID_STATION;
2177
2178 return ((struct il_station_priv_common *)sta->drv_priv)->sta_id;
2179 }
2180
2181 /**
2182 * il_sta_id_or_broadcast - return sta_id or broadcast sta
2183 * @il: iwl il
2184 * @context: the current context
2185 * @sta: mac80211 station
2186 *
2187 * In certain circumstances mac80211 passes a station pointer
2188 * that may be %NULL, for example during TX or key setup. In
2189 * that case, we need to use the broadcast station, so this
2190 * inline wraps that pattern.
2191 */
2192 static inline int
il_sta_id_or_broadcast(struct il_priv * il,struct ieee80211_sta * sta)2193 il_sta_id_or_broadcast(struct il_priv *il, struct ieee80211_sta *sta)
2194 {
2195 int sta_id;
2196
2197 if (!sta)
2198 return il->hw_params.bcast_id;
2199
2200 sta_id = il_sta_id(sta);
2201
2202 /*
2203 * mac80211 should not be passing a partially
2204 * initialised station!
2205 */
2206 WARN_ON(sta_id == IL_INVALID_STATION);
2207
2208 return sta_id;
2209 }
2210
2211 /**
2212 * il_queue_inc_wrap - increment queue idx, wrap back to beginning
2213 * @idx -- current idx
2214 * @n_bd -- total number of entries in queue (must be power of 2)
2215 */
2216 static inline int
il_queue_inc_wrap(int idx,int n_bd)2217 il_queue_inc_wrap(int idx, int n_bd)
2218 {
2219 return ++idx & (n_bd - 1);
2220 }
2221
2222 /**
2223 * il_queue_dec_wrap - decrement queue idx, wrap back to end
2224 * @idx -- current idx
2225 * @n_bd -- total number of entries in queue (must be power of 2)
2226 */
2227 static inline int
il_queue_dec_wrap(int idx,int n_bd)2228 il_queue_dec_wrap(int idx, int n_bd)
2229 {
2230 return --idx & (n_bd - 1);
2231 }
2232
2233 /* TODO: Move fw_desc functions to iwl-pci.ko */
2234 static inline void
il_free_fw_desc(struct pci_dev * pci_dev,struct fw_desc * desc)2235 il_free_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
2236 {
2237 if (desc->v_addr)
2238 dma_free_coherent(&pci_dev->dev, desc->len, desc->v_addr,
2239 desc->p_addr);
2240 desc->v_addr = NULL;
2241 desc->len = 0;
2242 }
2243
2244 static inline int
il_alloc_fw_desc(struct pci_dev * pci_dev,struct fw_desc * desc)2245 il_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
2246 {
2247 if (!desc->len) {
2248 desc->v_addr = NULL;
2249 return -EINVAL;
2250 }
2251
2252 desc->v_addr = dma_alloc_coherent(&pci_dev->dev, desc->len,
2253 &desc->p_addr, GFP_KERNEL);
2254 return (desc->v_addr != NULL) ? 0 : -ENOMEM;
2255 }
2256
2257 /*
2258 * we have 8 bits used like this:
2259 *
2260 * 7 6 5 4 3 2 1 0
2261 * | | | | | | | |
2262 * | | | | | | +-+-------- AC queue (0-3)
2263 * | | | | | |
2264 * | +-+-+-+-+------------ HW queue ID
2265 * |
2266 * +---------------------- unused
2267 */
2268 static inline void
il_set_swq_id(struct il_tx_queue * txq,u8 ac,u8 hwq)2269 il_set_swq_id(struct il_tx_queue *txq, u8 ac, u8 hwq)
2270 {
2271 BUG_ON(ac > 3); /* only have 2 bits */
2272 BUG_ON(hwq > 31); /* only use 5 bits */
2273
2274 txq->swq_id = (hwq << 2) | ac;
2275 }
2276
2277 static inline void
_il_wake_queue(struct il_priv * il,u8 ac)2278 _il_wake_queue(struct il_priv *il, u8 ac)
2279 {
2280 if (atomic_dec_return(&il->queue_stop_count[ac]) <= 0)
2281 ieee80211_wake_queue(il->hw, ac);
2282 }
2283
2284 static inline void
_il_stop_queue(struct il_priv * il,u8 ac)2285 _il_stop_queue(struct il_priv *il, u8 ac)
2286 {
2287 if (atomic_inc_return(&il->queue_stop_count[ac]) > 0)
2288 ieee80211_stop_queue(il->hw, ac);
2289 }
2290 static inline void
il_wake_queue(struct il_priv * il,struct il_tx_queue * txq)2291 il_wake_queue(struct il_priv *il, struct il_tx_queue *txq)
2292 {
2293 u8 queue = txq->swq_id;
2294 u8 ac = queue & 3;
2295 u8 hwq = (queue >> 2) & 0x1f;
2296
2297 if (test_and_clear_bit(hwq, il->queue_stopped))
2298 _il_wake_queue(il, ac);
2299 }
2300
2301 static inline void
il_stop_queue(struct il_priv * il,struct il_tx_queue * txq)2302 il_stop_queue(struct il_priv *il, struct il_tx_queue *txq)
2303 {
2304 u8 queue = txq->swq_id;
2305 u8 ac = queue & 3;
2306 u8 hwq = (queue >> 2) & 0x1f;
2307
2308 if (!test_and_set_bit(hwq, il->queue_stopped))
2309 _il_stop_queue(il, ac);
2310 }
2311
2312 static inline void
il_wake_queues_by_reason(struct il_priv * il,int reason)2313 il_wake_queues_by_reason(struct il_priv *il, int reason)
2314 {
2315 u8 ac;
2316
2317 if (test_and_clear_bit(reason, &il->stop_reason))
2318 for (ac = 0; ac < 4; ac++)
2319 _il_wake_queue(il, ac);
2320 }
2321
2322 static inline void
il_stop_queues_by_reason(struct il_priv * il,int reason)2323 il_stop_queues_by_reason(struct il_priv *il, int reason)
2324 {
2325 u8 ac;
2326
2327 if (!test_and_set_bit(reason, &il->stop_reason))
2328 for (ac = 0; ac < 4; ac++)
2329 _il_stop_queue(il, ac);
2330 }
2331
2332 #ifdef ieee80211_stop_queue
2333 #undef ieee80211_stop_queue
2334 #endif
2335
2336 #define ieee80211_stop_queue DO_NOT_USE_ieee80211_stop_queue
2337
2338 #ifdef ieee80211_wake_queue
2339 #undef ieee80211_wake_queue
2340 #endif
2341
2342 #define ieee80211_wake_queue DO_NOT_USE_ieee80211_wake_queue
2343
2344 static inline void
il_disable_interrupts(struct il_priv * il)2345 il_disable_interrupts(struct il_priv *il)
2346 {
2347 clear_bit(S_INT_ENABLED, &il->status);
2348
2349 /* disable interrupts from uCode/NIC to host */
2350 _il_wr(il, CSR_INT_MASK, 0x00000000);
2351
2352 /* acknowledge/clear/reset any interrupts still pending
2353 * from uCode or flow handler (Rx/Tx DMA) */
2354 _il_wr(il, CSR_INT, 0xffffffff);
2355 _il_wr(il, CSR_FH_INT_STATUS, 0xffffffff);
2356 }
2357
2358 static inline void
il_enable_rfkill_int(struct il_priv * il)2359 il_enable_rfkill_int(struct il_priv *il)
2360 {
2361 _il_wr(il, CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
2362 }
2363
2364 static inline void
il_enable_interrupts(struct il_priv * il)2365 il_enable_interrupts(struct il_priv *il)
2366 {
2367 set_bit(S_INT_ENABLED, &il->status);
2368 _il_wr(il, CSR_INT_MASK, il->inta_mask);
2369 }
2370
2371 /**
2372 * il_beacon_time_mask_low - mask of lower 32 bit of beacon time
2373 * @il -- pointer to il_priv data structure
2374 * @tsf_bits -- number of bits need to shift for masking)
2375 */
2376 static inline u32
il_beacon_time_mask_low(struct il_priv * il,u16 tsf_bits)2377 il_beacon_time_mask_low(struct il_priv *il, u16 tsf_bits)
2378 {
2379 return (1 << tsf_bits) - 1;
2380 }
2381
2382 /**
2383 * il_beacon_time_mask_high - mask of higher 32 bit of beacon time
2384 * @il -- pointer to il_priv data structure
2385 * @tsf_bits -- number of bits need to shift for masking)
2386 */
2387 static inline u32
il_beacon_time_mask_high(struct il_priv * il,u16 tsf_bits)2388 il_beacon_time_mask_high(struct il_priv *il, u16 tsf_bits)
2389 {
2390 return ((1 << (32 - tsf_bits)) - 1) << tsf_bits;
2391 }
2392
2393 /**
2394 * struct il_rb_status - reseve buffer status host memory mapped FH registers
2395 *
2396 * @closed_rb_num [0:11] - Indicates the idx of the RB which was closed
2397 * @closed_fr_num [0:11] - Indicates the idx of the RX Frame which was closed
2398 * @finished_rb_num [0:11] - Indicates the idx of the current RB
2399 * in which the last frame was written to
2400 * @finished_fr_num [0:11] - Indicates the idx of the RX Frame
2401 * which was transferred
2402 */
2403 struct il_rb_status {
2404 __le16 closed_rb_num;
2405 __le16 closed_fr_num;
2406 __le16 finished_rb_num;
2407 __le16 finished_fr_nam;
2408 __le32 __unused; /* 3945 only */
2409 } __packed;
2410
2411 #define TFD_QUEUE_SIZE_MAX 256
2412 #define TFD_QUEUE_SIZE_BC_DUP 64
2413 #define TFD_QUEUE_BC_SIZE (TFD_QUEUE_SIZE_MAX + TFD_QUEUE_SIZE_BC_DUP)
2414 #define IL_TX_DMA_MASK DMA_BIT_MASK(36)
2415 #define IL_NUM_OF_TBS 20
2416
2417 static inline u8
il_get_dma_hi_addr(dma_addr_t addr)2418 il_get_dma_hi_addr(dma_addr_t addr)
2419 {
2420 return (sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0) & 0xF;
2421 }
2422
2423 /**
2424 * struct il_tfd_tb transmit buffer descriptor within transmit frame descriptor
2425 *
2426 * This structure contains dma address and length of transmission address
2427 *
2428 * @lo: low [31:0] portion of the dma address of TX buffer every even is
2429 * unaligned on 16 bit boundary
2430 * @hi_n_len: 0-3 [35:32] portion of dma
2431 * 4-15 length of the tx buffer
2432 */
2433 struct il_tfd_tb {
2434 __le32 lo;
2435 __le16 hi_n_len;
2436 } __packed;
2437
2438 /**
2439 * struct il_tfd
2440 *
2441 * Transmit Frame Descriptor (TFD)
2442 *
2443 * @ __reserved1[3] reserved
2444 * @ num_tbs 0-4 number of active tbs
2445 * 5 reserved
2446 * 6-7 padding (not used)
2447 * @ tbs[20] transmit frame buffer descriptors
2448 * @ __pad padding
2449 *
2450 * Each Tx queue uses a circular buffer of 256 TFDs stored in host DRAM.
2451 * Both driver and device share these circular buffers, each of which must be
2452 * contiguous 256 TFDs x 128 bytes-per-TFD = 32 KBytes
2453 *
2454 * Driver must indicate the physical address of the base of each
2455 * circular buffer via the FH49_MEM_CBBC_QUEUE registers.
2456 *
2457 * Each TFD contains pointer/size information for up to 20 data buffers
2458 * in host DRAM. These buffers collectively contain the (one) frame described
2459 * by the TFD. Each buffer must be a single contiguous block of memory within
2460 * itself, but buffers may be scattered in host DRAM. Each buffer has max size
2461 * of (4K - 4). The concatenates all of a TFD's buffers into a single
2462 * Tx frame, up to 8 KBytes in size.
2463 *
2464 * A maximum of 255 (not 256!) TFDs may be on a queue waiting for Tx.
2465 */
2466 struct il_tfd {
2467 u8 __reserved1[3];
2468 u8 num_tbs;
2469 struct il_tfd_tb tbs[IL_NUM_OF_TBS];
2470 __le32 __pad;
2471 } __packed;
2472 /* PCI registers */
2473 #define PCI_CFG_RETRY_TIMEOUT 0x041
2474
2475 struct il_rate_info {
2476 u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */
2477 u8 plcp_siso; /* uCode API: RATE_SISO_6M_PLCP, etc. */
2478 u8 plcp_mimo2; /* uCode API: RATE_MIMO2_6M_PLCP, etc. */
2479 u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */
2480 u8 prev_ieee; /* previous rate in IEEE speeds */
2481 u8 next_ieee; /* next rate in IEEE speeds */
2482 u8 prev_rs; /* previous rate used in rs algo */
2483 u8 next_rs; /* next rate used in rs algo */
2484 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
2485 u8 next_rs_tgg; /* next rate used in TGG rs algo */
2486 };
2487
2488 struct il3945_rate_info {
2489 u8 plcp; /* uCode API: RATE_6M_PLCP, etc. */
2490 u8 ieee; /* MAC header: RATE_6M_IEEE, etc. */
2491 u8 prev_ieee; /* previous rate in IEEE speeds */
2492 u8 next_ieee; /* next rate in IEEE speeds */
2493 u8 prev_rs; /* previous rate used in rs algo */
2494 u8 next_rs; /* next rate used in rs algo */
2495 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
2496 u8 next_rs_tgg; /* next rate used in TGG rs algo */
2497 u8 table_rs_idx; /* idx in rate scale table cmd */
2498 u8 prev_table_rs; /* prev in rate table cmd */
2499 };
2500
2501 /*
2502 * These serve as idxes into
2503 * struct il_rate_info il_rates[RATE_COUNT];
2504 */
2505 enum {
2506 RATE_1M_IDX = 0,
2507 RATE_2M_IDX,
2508 RATE_5M_IDX,
2509 RATE_11M_IDX,
2510 RATE_6M_IDX,
2511 RATE_9M_IDX,
2512 RATE_12M_IDX,
2513 RATE_18M_IDX,
2514 RATE_24M_IDX,
2515 RATE_36M_IDX,
2516 RATE_48M_IDX,
2517 RATE_54M_IDX,
2518 RATE_60M_IDX,
2519 RATE_COUNT,
2520 RATE_COUNT_LEGACY = RATE_COUNT - 1, /* Excluding 60M */
2521 RATE_COUNT_3945 = RATE_COUNT - 1,
2522 RATE_INVM_IDX = RATE_COUNT,
2523 RATE_INVALID = RATE_COUNT,
2524 };
2525
2526 enum {
2527 RATE_6M_IDX_TBL = 0,
2528 RATE_9M_IDX_TBL,
2529 RATE_12M_IDX_TBL,
2530 RATE_18M_IDX_TBL,
2531 RATE_24M_IDX_TBL,
2532 RATE_36M_IDX_TBL,
2533 RATE_48M_IDX_TBL,
2534 RATE_54M_IDX_TBL,
2535 RATE_1M_IDX_TBL,
2536 RATE_2M_IDX_TBL,
2537 RATE_5M_IDX_TBL,
2538 RATE_11M_IDX_TBL,
2539 RATE_INVM_IDX_TBL = RATE_INVM_IDX - 1,
2540 };
2541
2542 enum {
2543 IL_FIRST_OFDM_RATE = RATE_6M_IDX,
2544 IL39_LAST_OFDM_RATE = RATE_54M_IDX,
2545 IL_LAST_OFDM_RATE = RATE_60M_IDX,
2546 IL_FIRST_CCK_RATE = RATE_1M_IDX,
2547 IL_LAST_CCK_RATE = RATE_11M_IDX,
2548 };
2549
2550 /* #define vs. enum to keep from defaulting to 'large integer' */
2551 #define RATE_6M_MASK (1 << RATE_6M_IDX)
2552 #define RATE_9M_MASK (1 << RATE_9M_IDX)
2553 #define RATE_12M_MASK (1 << RATE_12M_IDX)
2554 #define RATE_18M_MASK (1 << RATE_18M_IDX)
2555 #define RATE_24M_MASK (1 << RATE_24M_IDX)
2556 #define RATE_36M_MASK (1 << RATE_36M_IDX)
2557 #define RATE_48M_MASK (1 << RATE_48M_IDX)
2558 #define RATE_54M_MASK (1 << RATE_54M_IDX)
2559 #define RATE_60M_MASK (1 << RATE_60M_IDX)
2560 #define RATE_1M_MASK (1 << RATE_1M_IDX)
2561 #define RATE_2M_MASK (1 << RATE_2M_IDX)
2562 #define RATE_5M_MASK (1 << RATE_5M_IDX)
2563 #define RATE_11M_MASK (1 << RATE_11M_IDX)
2564
2565 /* uCode API values for legacy bit rates, both OFDM and CCK */
2566 enum {
2567 RATE_6M_PLCP = 13,
2568 RATE_9M_PLCP = 15,
2569 RATE_12M_PLCP = 5,
2570 RATE_18M_PLCP = 7,
2571 RATE_24M_PLCP = 9,
2572 RATE_36M_PLCP = 11,
2573 RATE_48M_PLCP = 1,
2574 RATE_54M_PLCP = 3,
2575 RATE_60M_PLCP = 3, /*FIXME:RS:should be removed */
2576 RATE_1M_PLCP = 10,
2577 RATE_2M_PLCP = 20,
2578 RATE_5M_PLCP = 55,
2579 RATE_11M_PLCP = 110,
2580 /*FIXME:RS:add RATE_LEGACY_INVM_PLCP = 0, */
2581 };
2582
2583 /* uCode API values for OFDM high-throughput (HT) bit rates */
2584 enum {
2585 RATE_SISO_6M_PLCP = 0,
2586 RATE_SISO_12M_PLCP = 1,
2587 RATE_SISO_18M_PLCP = 2,
2588 RATE_SISO_24M_PLCP = 3,
2589 RATE_SISO_36M_PLCP = 4,
2590 RATE_SISO_48M_PLCP = 5,
2591 RATE_SISO_54M_PLCP = 6,
2592 RATE_SISO_60M_PLCP = 7,
2593 RATE_MIMO2_6M_PLCP = 0x8,
2594 RATE_MIMO2_12M_PLCP = 0x9,
2595 RATE_MIMO2_18M_PLCP = 0xa,
2596 RATE_MIMO2_24M_PLCP = 0xb,
2597 RATE_MIMO2_36M_PLCP = 0xc,
2598 RATE_MIMO2_48M_PLCP = 0xd,
2599 RATE_MIMO2_54M_PLCP = 0xe,
2600 RATE_MIMO2_60M_PLCP = 0xf,
2601 RATE_SISO_INVM_PLCP,
2602 RATE_MIMO2_INVM_PLCP = RATE_SISO_INVM_PLCP,
2603 };
2604
2605 /* MAC header values for bit rates */
2606 enum {
2607 RATE_6M_IEEE = 12,
2608 RATE_9M_IEEE = 18,
2609 RATE_12M_IEEE = 24,
2610 RATE_18M_IEEE = 36,
2611 RATE_24M_IEEE = 48,
2612 RATE_36M_IEEE = 72,
2613 RATE_48M_IEEE = 96,
2614 RATE_54M_IEEE = 108,
2615 RATE_60M_IEEE = 120,
2616 RATE_1M_IEEE = 2,
2617 RATE_2M_IEEE = 4,
2618 RATE_5M_IEEE = 11,
2619 RATE_11M_IEEE = 22,
2620 };
2621
2622 #define IL_CCK_BASIC_RATES_MASK \
2623 (RATE_1M_MASK | \
2624 RATE_2M_MASK)
2625
2626 #define IL_CCK_RATES_MASK \
2627 (IL_CCK_BASIC_RATES_MASK | \
2628 RATE_5M_MASK | \
2629 RATE_11M_MASK)
2630
2631 #define IL_OFDM_BASIC_RATES_MASK \
2632 (RATE_6M_MASK | \
2633 RATE_12M_MASK | \
2634 RATE_24M_MASK)
2635
2636 #define IL_OFDM_RATES_MASK \
2637 (IL_OFDM_BASIC_RATES_MASK | \
2638 RATE_9M_MASK | \
2639 RATE_18M_MASK | \
2640 RATE_36M_MASK | \
2641 RATE_48M_MASK | \
2642 RATE_54M_MASK)
2643
2644 #define IL_BASIC_RATES_MASK \
2645 (IL_OFDM_BASIC_RATES_MASK | \
2646 IL_CCK_BASIC_RATES_MASK)
2647
2648 #define RATES_MASK ((1 << RATE_COUNT) - 1)
2649 #define RATES_MASK_3945 ((1 << RATE_COUNT_3945) - 1)
2650
2651 #define IL_INVALID_VALUE -1
2652
2653 #define IL_MIN_RSSI_VAL -100
2654 #define IL_MAX_RSSI_VAL 0
2655
2656 /* These values specify how many Tx frame attempts before
2657 * searching for a new modulation mode */
2658 #define IL_LEGACY_FAILURE_LIMIT 160
2659 #define IL_LEGACY_SUCCESS_LIMIT 480
2660 #define IL_LEGACY_TBL_COUNT 160
2661
2662 #define IL_NONE_LEGACY_FAILURE_LIMIT 400
2663 #define IL_NONE_LEGACY_SUCCESS_LIMIT 4500
2664 #define IL_NONE_LEGACY_TBL_COUNT 1500
2665
2666 /* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */
2667 #define IL_RS_GOOD_RATIO 12800 /* 100% */
2668 #define RATE_SCALE_SWITCH 10880 /* 85% */
2669 #define RATE_HIGH_TH 10880 /* 85% */
2670 #define RATE_INCREASE_TH 6400 /* 50% */
2671 #define RATE_DECREASE_TH 1920 /* 15% */
2672
2673 /* possible actions when in legacy mode */
2674 #define IL_LEGACY_SWITCH_ANTENNA1 0
2675 #define IL_LEGACY_SWITCH_ANTENNA2 1
2676 #define IL_LEGACY_SWITCH_SISO 2
2677 #define IL_LEGACY_SWITCH_MIMO2_AB 3
2678 #define IL_LEGACY_SWITCH_MIMO2_AC 4
2679 #define IL_LEGACY_SWITCH_MIMO2_BC 5
2680
2681 /* possible actions when in siso mode */
2682 #define IL_SISO_SWITCH_ANTENNA1 0
2683 #define IL_SISO_SWITCH_ANTENNA2 1
2684 #define IL_SISO_SWITCH_MIMO2_AB 2
2685 #define IL_SISO_SWITCH_MIMO2_AC 3
2686 #define IL_SISO_SWITCH_MIMO2_BC 4
2687 #define IL_SISO_SWITCH_GI 5
2688
2689 /* possible actions when in mimo mode */
2690 #define IL_MIMO2_SWITCH_ANTENNA1 0
2691 #define IL_MIMO2_SWITCH_ANTENNA2 1
2692 #define IL_MIMO2_SWITCH_SISO_A 2
2693 #define IL_MIMO2_SWITCH_SISO_B 3
2694 #define IL_MIMO2_SWITCH_SISO_C 4
2695 #define IL_MIMO2_SWITCH_GI 5
2696
2697 #define IL_MAX_SEARCH IL_MIMO2_SWITCH_GI
2698
2699 #define IL_ACTION_LIMIT 3 /* # possible actions */
2700
2701 #define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */
2702
2703 /* load per tid defines for A-MPDU activation */
2704 #define IL_AGG_TPT_THREHOLD 0
2705 #define IL_AGG_LOAD_THRESHOLD 10
2706 #define IL_AGG_ALL_TID 0xff
2707 #define TID_QUEUE_CELL_SPACING 50 /*mS */
2708 #define TID_QUEUE_MAX_SIZE 20
2709 #define TID_ROUND_VALUE 5 /* mS */
2710 #define TID_MAX_LOAD_COUNT 8
2711
2712 #define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
2713 #define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
2714
2715 extern const struct il_rate_info il_rates[RATE_COUNT];
2716
2717 enum il_table_type {
2718 LQ_NONE,
2719 LQ_G, /* legacy types */
2720 LQ_A,
2721 LQ_SISO, /* high-throughput types */
2722 LQ_MIMO2,
2723 LQ_MAX,
2724 };
2725
2726 #define is_legacy(tbl) ((tbl) == LQ_G || (tbl) == LQ_A)
2727 #define is_siso(tbl) ((tbl) == LQ_SISO)
2728 #define is_mimo2(tbl) ((tbl) == LQ_MIMO2)
2729 #define is_mimo(tbl) (is_mimo2(tbl))
2730 #define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl))
2731 #define is_a_band(tbl) ((tbl) == LQ_A)
2732 #define is_g_and(tbl) ((tbl) == LQ_G)
2733
2734 #define ANT_NONE 0x0
2735 #define ANT_A BIT(0)
2736 #define ANT_B BIT(1)
2737 #define ANT_AB (ANT_A | ANT_B)
2738 #define ANT_C BIT(2)
2739 #define ANT_AC (ANT_A | ANT_C)
2740 #define ANT_BC (ANT_B | ANT_C)
2741 #define ANT_ABC (ANT_AB | ANT_C)
2742
2743 #define IL_MAX_MCS_DISPLAY_SIZE 12
2744
2745 struct il_rate_mcs_info {
2746 char mbps[IL_MAX_MCS_DISPLAY_SIZE];
2747 char mcs[IL_MAX_MCS_DISPLAY_SIZE];
2748 };
2749
2750 /**
2751 * struct il_rate_scale_data -- tx success history for one rate
2752 */
2753 struct il_rate_scale_data {
2754 u64 data; /* bitmap of successful frames */
2755 s32 success_counter; /* number of frames successful */
2756 s32 success_ratio; /* per-cent * 128 */
2757 s32 counter; /* number of frames attempted */
2758 s32 average_tpt; /* success ratio * expected throughput */
2759 unsigned long stamp;
2760 };
2761
2762 /**
2763 * struct il_scale_tbl_info -- tx params and success history for all rates
2764 *
2765 * There are two of these in struct il_lq_sta,
2766 * one for "active", and one for "search".
2767 */
2768 struct il_scale_tbl_info {
2769 enum il_table_type lq_type;
2770 u8 ant_type;
2771 u8 is_SGI; /* 1 = short guard interval */
2772 u8 is_ht40; /* 1 = 40 MHz channel width */
2773 u8 is_dup; /* 1 = duplicated data streams */
2774 u8 action; /* change modulation; IL_[LEGACY/SISO/MIMO]_SWITCH_* */
2775 u8 max_search; /* maximun number of tables we can search */
2776 s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */
2777 u32 current_rate; /* rate_n_flags, uCode API format */
2778 struct il_rate_scale_data win[RATE_COUNT]; /* rate histories */
2779 };
2780
2781 struct il_traffic_load {
2782 unsigned long time_stamp; /* age of the oldest stats */
2783 u32 packet_count[TID_QUEUE_MAX_SIZE]; /* packet count in this time
2784 * slice */
2785 u32 total; /* total num of packets during the
2786 * last TID_MAX_TIME_DIFF */
2787 u8 queue_count; /* number of queues that has
2788 * been used since the last cleanup */
2789 u8 head; /* start of the circular buffer */
2790 };
2791
2792 /**
2793 * struct il_lq_sta -- driver's rate scaling ilate structure
2794 *
2795 * Pointer to this gets passed back and forth between driver and mac80211.
2796 */
2797 struct il_lq_sta {
2798 u8 active_tbl; /* idx of active table, range 0-1 */
2799 u8 enable_counter; /* indicates HT mode */
2800 u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */
2801 u8 search_better_tbl; /* 1: currently trying alternate mode */
2802 s32 last_tpt;
2803
2804 /* The following determine when to search for a new mode */
2805 u32 table_count_limit;
2806 u32 max_failure_limit; /* # failed frames before new search */
2807 u32 max_success_limit; /* # successful frames before new search */
2808 u32 table_count;
2809 u32 total_failed; /* total failed frames, any/all rates */
2810 u32 total_success; /* total successful frames, any/all rates */
2811 u64 flush_timer; /* time staying in mode before new search */
2812
2813 u8 action_counter; /* # mode-switch actions tried */
2814 u8 is_green;
2815 u8 is_dup;
2816 enum nl80211_band band;
2817
2818 /* The following are bitmaps of rates; RATE_6M_MASK, etc. */
2819 u32 supp_rates;
2820 u16 active_legacy_rate;
2821 u16 active_siso_rate;
2822 u16 active_mimo2_rate;
2823 s8 max_rate_idx; /* Max rate set by user */
2824 u8 missed_rate_counter;
2825
2826 struct il_link_quality_cmd lq;
2827 struct il_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */
2828 struct il_traffic_load load[TID_MAX_LOAD_COUNT];
2829 u8 tx_agg_tid_en;
2830 #ifdef CONFIG_MAC80211_DEBUGFS
2831 struct dentry *rs_sta_dbgfs_scale_table_file;
2832 struct dentry *rs_sta_dbgfs_stats_table_file;
2833 struct dentry *rs_sta_dbgfs_rate_scale_data_file;
2834 struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file;
2835 u32 dbg_fixed_rate;
2836 #endif
2837 struct il_priv *drv;
2838
2839 /* used to be in sta_info */
2840 int last_txrate_idx;
2841 /* last tx rate_n_flags */
2842 u32 last_rate_n_flags;
2843 /* packets destined for this STA are aggregated */
2844 u8 is_agg;
2845 };
2846
2847 /*
2848 * il_station_priv: Driver's ilate station information
2849 *
2850 * When mac80211 creates a station it reserves some space (hw->sta_data_size)
2851 * in the structure for use by driver. This structure is places in that
2852 * space.
2853 *
2854 * The common struct MUST be first because it is shared between
2855 * 3945 and 4965!
2856 */
2857 struct il_station_priv {
2858 struct il_station_priv_common common;
2859 struct il_lq_sta lq_sta;
2860 atomic_t pending_frames;
2861 bool client;
2862 bool asleep;
2863 };
2864
2865 static inline u8
il4965_num_of_ant(u8 m)2866 il4965_num_of_ant(u8 m)
2867 {
2868 return !!(m & ANT_A) + !!(m & ANT_B) + !!(m & ANT_C);
2869 }
2870
2871 static inline u8
il4965_first_antenna(u8 mask)2872 il4965_first_antenna(u8 mask)
2873 {
2874 if (mask & ANT_A)
2875 return ANT_A;
2876 if (mask & ANT_B)
2877 return ANT_B;
2878 return ANT_C;
2879 }
2880
2881 /**
2882 * il3945_rate_scale_init - Initialize the rate scale table based on assoc info
2883 *
2884 * The specific throughput table used is based on the type of network
2885 * the associated with, including A, B, G, and G w/ TGG protection
2886 */
2887 void il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
2888
2889 /* Initialize station's rate scaling information after adding station */
2890 void il4965_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta,
2891 u8 sta_id);
2892 void il3945_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta,
2893 u8 sta_id);
2894
2895 /**
2896 * il_rate_control_register - Register the rate control algorithm callbacks
2897 *
2898 * Since the rate control algorithm is hardware specific, there is no need
2899 * or reason to place it as a stand alone module. The driver can call
2900 * il_rate_control_register in order to register the rate control callbacks
2901 * with the mac80211 subsystem. This should be performed prior to calling
2902 * ieee80211_register_hw
2903 *
2904 */
2905 int il4965_rate_control_register(void);
2906 int il3945_rate_control_register(void);
2907
2908 /**
2909 * il_rate_control_unregister - Unregister the rate control callbacks
2910 *
2911 * This should be called after calling ieee80211_unregister_hw, but before
2912 * the driver is unloaded.
2913 */
2914 void il4965_rate_control_unregister(void);
2915 void il3945_rate_control_unregister(void);
2916
2917 int il_power_update_mode(struct il_priv *il, bool force);
2918 void il_power_initialize(struct il_priv *il);
2919
2920 extern u32 il_debug_level;
2921
2922 #ifdef CONFIG_IWLEGACY_DEBUG
2923 /*
2924 * il_get_debug_level: Return active debug level for device
2925 *
2926 * Using sysfs it is possible to set per device debug level. This debug
2927 * level will be used if set, otherwise the global debug level which can be
2928 * set via module parameter is used.
2929 */
2930 static inline u32
il_get_debug_level(struct il_priv * il)2931 il_get_debug_level(struct il_priv *il)
2932 {
2933 if (il->debug_level)
2934 return il->debug_level;
2935 else
2936 return il_debug_level;
2937 }
2938 #else
2939 static inline u32
il_get_debug_level(struct il_priv * il)2940 il_get_debug_level(struct il_priv *il)
2941 {
2942 return il_debug_level;
2943 }
2944 #endif
2945
2946 #define il_print_hex_error(il, p, len) \
2947 do { \
2948 print_hex_dump(KERN_ERR, "iwl data: ", \
2949 DUMP_PREFIX_OFFSET, 16, 1, p, len, 1); \
2950 } while (0)
2951
2952 #ifdef CONFIG_IWLEGACY_DEBUG
2953 #define IL_DBG(level, fmt, args...) \
2954 do { \
2955 if (il_get_debug_level(il) & level) \
2956 dev_err(&il->hw->wiphy->dev, "%c %s " fmt, \
2957 in_interrupt() ? 'I' : 'U', __func__ , ##args); \
2958 } while (0)
2959
2960 #define il_print_hex_dump(il, level, p, len) \
2961 do { \
2962 if (il_get_debug_level(il) & level) \
2963 print_hex_dump(KERN_DEBUG, "iwl data: ", \
2964 DUMP_PREFIX_OFFSET, 16, 1, p, len, 1); \
2965 } while (0)
2966
2967 #else
2968 #define IL_DBG(level, fmt, args...)
2969 static inline void
il_print_hex_dump(struct il_priv * il,int level,const void * p,u32 len)2970 il_print_hex_dump(struct il_priv *il, int level, const void *p, u32 len)
2971 {
2972 }
2973 #endif /* CONFIG_IWLEGACY_DEBUG */
2974
2975 #ifdef CONFIG_IWLEGACY_DEBUGFS
2976 int il_dbgfs_register(struct il_priv *il, const char *name);
2977 void il_dbgfs_unregister(struct il_priv *il);
2978 #else
2979 static inline int
il_dbgfs_register(struct il_priv * il,const char * name)2980 il_dbgfs_register(struct il_priv *il, const char *name)
2981 {
2982 return 0;
2983 }
2984
2985 static inline void
il_dbgfs_unregister(struct il_priv * il)2986 il_dbgfs_unregister(struct il_priv *il)
2987 {
2988 }
2989 #endif /* CONFIG_IWLEGACY_DEBUGFS */
2990
2991 /*
2992 * To use the debug system:
2993 *
2994 * If you are defining a new debug classification, simply add it to the #define
2995 * list here in the form of
2996 *
2997 * #define IL_DL_xxxx VALUE
2998 *
2999 * where xxxx should be the name of the classification (for example, WEP).
3000 *
3001 * You then need to either add a IL_xxxx_DEBUG() macro definition for your
3002 * classification, or use IL_DBG(IL_DL_xxxx, ...) whenever you want
3003 * to send output to that classification.
3004 *
3005 * The active debug levels can be accessed via files
3006 *
3007 * /sys/module/iwl4965/parameters/debug
3008 * /sys/module/iwl3945/parameters/debug
3009 * /sys/class/net/wlan0/device/debug_level
3010 *
3011 * when CONFIG_IWLEGACY_DEBUG=y.
3012 */
3013
3014 /* 0x0000000F - 0x00000001 */
3015 #define IL_DL_INFO (1 << 0)
3016 #define IL_DL_MAC80211 (1 << 1)
3017 #define IL_DL_HCMD (1 << 2)
3018 #define IL_DL_STATE (1 << 3)
3019 /* 0x000000F0 - 0x00000010 */
3020 #define IL_DL_MACDUMP (1 << 4)
3021 #define IL_DL_HCMD_DUMP (1 << 5)
3022 #define IL_DL_EEPROM (1 << 6)
3023 #define IL_DL_RADIO (1 << 7)
3024 /* 0x00000F00 - 0x00000100 */
3025 #define IL_DL_POWER (1 << 8)
3026 #define IL_DL_TEMP (1 << 9)
3027 #define IL_DL_NOTIF (1 << 10)
3028 #define IL_DL_SCAN (1 << 11)
3029 /* 0x0000F000 - 0x00001000 */
3030 #define IL_DL_ASSOC (1 << 12)
3031 #define IL_DL_DROP (1 << 13)
3032 #define IL_DL_TXPOWER (1 << 14)
3033 #define IL_DL_AP (1 << 15)
3034 /* 0x000F0000 - 0x00010000 */
3035 #define IL_DL_FW (1 << 16)
3036 #define IL_DL_RF_KILL (1 << 17)
3037 #define IL_DL_FW_ERRORS (1 << 18)
3038 #define IL_DL_LED (1 << 19)
3039 /* 0x00F00000 - 0x00100000 */
3040 #define IL_DL_RATE (1 << 20)
3041 #define IL_DL_CALIB (1 << 21)
3042 #define IL_DL_WEP (1 << 22)
3043 #define IL_DL_TX (1 << 23)
3044 /* 0x0F000000 - 0x01000000 */
3045 #define IL_DL_RX (1 << 24)
3046 #define IL_DL_ISR (1 << 25)
3047 #define IL_DL_HT (1 << 26)
3048 /* 0xF0000000 - 0x10000000 */
3049 #define IL_DL_11H (1 << 28)
3050 #define IL_DL_STATS (1 << 29)
3051 #define IL_DL_TX_REPLY (1 << 30)
3052 #define IL_DL_QOS (1 << 31)
3053
3054 #define D_INFO(f, a...) IL_DBG(IL_DL_INFO, f, ## a)
3055 #define D_MAC80211(f, a...) IL_DBG(IL_DL_MAC80211, f, ## a)
3056 #define D_MACDUMP(f, a...) IL_DBG(IL_DL_MACDUMP, f, ## a)
3057 #define D_TEMP(f, a...) IL_DBG(IL_DL_TEMP, f, ## a)
3058 #define D_SCAN(f, a...) IL_DBG(IL_DL_SCAN, f, ## a)
3059 #define D_RX(f, a...) IL_DBG(IL_DL_RX, f, ## a)
3060 #define D_TX(f, a...) IL_DBG(IL_DL_TX, f, ## a)
3061 #define D_ISR(f, a...) IL_DBG(IL_DL_ISR, f, ## a)
3062 #define D_LED(f, a...) IL_DBG(IL_DL_LED, f, ## a)
3063 #define D_WEP(f, a...) IL_DBG(IL_DL_WEP, f, ## a)
3064 #define D_HC(f, a...) IL_DBG(IL_DL_HCMD, f, ## a)
3065 #define D_HC_DUMP(f, a...) IL_DBG(IL_DL_HCMD_DUMP, f, ## a)
3066 #define D_EEPROM(f, a...) IL_DBG(IL_DL_EEPROM, f, ## a)
3067 #define D_CALIB(f, a...) IL_DBG(IL_DL_CALIB, f, ## a)
3068 #define D_FW(f, a...) IL_DBG(IL_DL_FW, f, ## a)
3069 #define D_RF_KILL(f, a...) IL_DBG(IL_DL_RF_KILL, f, ## a)
3070 #define D_DROP(f, a...) IL_DBG(IL_DL_DROP, f, ## a)
3071 #define D_AP(f, a...) IL_DBG(IL_DL_AP, f, ## a)
3072 #define D_TXPOWER(f, a...) IL_DBG(IL_DL_TXPOWER, f, ## a)
3073 #define D_RATE(f, a...) IL_DBG(IL_DL_RATE, f, ## a)
3074 #define D_NOTIF(f, a...) IL_DBG(IL_DL_NOTIF, f, ## a)
3075 #define D_ASSOC(f, a...) IL_DBG(IL_DL_ASSOC, f, ## a)
3076 #define D_HT(f, a...) IL_DBG(IL_DL_HT, f, ## a)
3077 #define D_STATS(f, a...) IL_DBG(IL_DL_STATS, f, ## a)
3078 #define D_TX_REPLY(f, a...) IL_DBG(IL_DL_TX_REPLY, f, ## a)
3079 #define D_QOS(f, a...) IL_DBG(IL_DL_QOS, f, ## a)
3080 #define D_RADIO(f, a...) IL_DBG(IL_DL_RADIO, f, ## a)
3081 #define D_POWER(f, a...) IL_DBG(IL_DL_POWER, f, ## a)
3082 #define D_11H(f, a...) IL_DBG(IL_DL_11H, f, ## a)
3083
3084 #endif /* __il_core_h__ */
3085