1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
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.
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
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
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
27 * Please use this file (iwl-dev.h) for driver implementation definitions.
28 * Please use iwl-commands.h for uCode API definitions.
34 #include <linux/pci.h> /* for struct pci_device_id */
35 #include <linux/kernel.h>
36 #include <linux/wait.h>
37 #include <linux/leds.h>
38 #include <net/ieee80211_radiotap.h>
40 #include "iwl-eeprom.h"
44 #include "iwl-debug.h"
45 #include "iwl-agn-hw.h"
47 #include "iwl-power.h"
48 #include "iwl-agn-rs.h"
49 #include "iwl-agn-tt.h"
51 #define DRV_NAME "iwlagn"
55 /* CT-KILL constants */
56 #define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */
57 #define CT_KILL_THRESHOLD 114 /* in Celsius */
58 #define CT_KILL_EXIT_THRESHOLD 95 /* in Celsius */
60 /* Default noise level to report when noise measurement is not available.
61 * This may be because we're:
62 * 1) Not associated (4965, no beacon statistics being sent to driver)
63 * 2) Scanning (noise measurement does not apply to associated channel)
64 * 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
65 * Use default noise value of -127 ... this is below the range of measurable
66 * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
67 * Also, -127 works better than 0 when averaging frames with/without
68 * noise info (e.g. averaging might be done in app); measured dBm values are
69 * always negative ... using a negative value as the default keeps all
70 * averages within an s8's (used in some apps) range of negative values. */
71 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
74 * RTS threshold here is total size [2347] minus 4 FCS bytes
76 * a value of 0 means RTS on all data/management packets
77 * a value > max MSDU size means no RTS
78 * else RTS for data/management frames where MPDU is larger
81 #define DEFAULT_RTS_THRESHOLD 2347U
82 #define MIN_RTS_THRESHOLD 0U
83 #define MAX_RTS_THRESHOLD 2347U
84 #define MAX_MSDU_SIZE 2304U
85 #define MAX_MPDU_SIZE 2346U
86 #define DEFAULT_BEACON_INTERVAL 200U
87 #define DEFAULT_SHORT_RETRY_LIMIT 7U
88 #define DEFAULT_LONG_RETRY_LIMIT 4U
90 struct iwl_rx_mem_buffer {
93 struct list_head list;
96 #define rxb_addr(r) page_address(r->page)
99 struct iwl_device_cmd;
101 struct iwl_cmd_meta {
102 /* only for SYNC commands, iff the reply skb is wanted */
103 struct iwl_host_cmd *source;
105 * only for ASYNC commands
106 * (which is somewhat stupid -- look at iwl-sta.c for instance
107 * which duplicates a bunch of code because the callback isn't
108 * invoked for SYNC commands, if it were and its result passed
109 * through it would be simpler...)
111 void (*callback)(struct iwl_priv *priv,
112 struct iwl_device_cmd *cmd,
113 struct iwl_rx_packet *pkt);
117 DEFINE_DMA_UNMAP_ADDR(mapping);
118 DEFINE_DMA_UNMAP_LEN(len);
122 * Generic queue structure
124 * Contains common data for Rx and Tx queues.
126 * Note the difference between n_bd and n_window: the hardware
127 * always assumes 256 descriptors, so n_bd is always 256 (unless
128 * there might be HW changes in the future). For the normal TX
129 * queues, n_window, which is the size of the software queue data
130 * is also 256; however, for the command queue, n_window is only
131 * 32 since we don't need so many commands pending. Since the HW
132 * still uses 256 BDs for DMA though, n_bd stays 256. As a result,
133 * the software buffers (in the variables @meta, @txb in struct
134 * iwl_tx_queue) only have 32 entries, while the HW buffers (@tfds
135 * in the same struct) have 256.
136 * This means that we end up with the following:
137 * HW entries: | 0 | ... | N * 32 | ... | N * 32 + 31 | ... | 255 |
138 * SW entries: | 0 | ... | 31 |
139 * where N is a number between 0 and 7. This means that the SW
140 * data is a window overlayed over the HW queue.
143 int n_bd; /* number of BDs in this queue */
144 int write_ptr; /* 1-st empty entry (index) host_w*/
145 int read_ptr; /* last used entry (index) host_r*/
146 /* use for monitoring and recovering the stuck queue */
147 dma_addr_t dma_addr; /* physical addr for BD's */
148 int n_window; /* safe queue window */
150 int low_mark; /* low watermark, resume queue if free
151 * space more than this */
152 int high_mark; /* high watermark, stop queue if free
153 * space less than this */
156 /* One for each TFD */
159 struct iwl_rxon_context *ctx;
163 * struct iwl_tx_queue - Tx Queue for DMA
164 * @q: generic Rx/Tx queue descriptor
165 * @bd: base of circular buffer of TFDs
166 * @cmd: array of command/TX buffer pointers
167 * @meta: array of meta data for each command/tx buffer
168 * @dma_addr_cmd: physical address of cmd/tx buffer array
169 * @txb: array of per-TFD driver data
170 * @time_stamp: time (in jiffies) of last read_ptr change
171 * @need_update: indicates need to update read/write index
172 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
174 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
175 * descriptors) and required locking structures.
177 #define TFD_TX_CMD_SLOTS 256
178 #define TFD_CMD_SLOTS 32
180 struct iwl_tx_queue {
182 struct iwl_tfd *tfds;
183 struct iwl_device_cmd **cmd;
184 struct iwl_cmd_meta *meta;
185 struct iwl_tx_info *txb;
186 unsigned long time_stamp;
193 #define IWL_NUM_SCAN_RATES (2)
196 * One for each channel, holds all channel setup data
197 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
200 struct iwl_channel_info {
201 struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */
202 struct iwl_eeprom_channel ht40_eeprom; /* EEPROM regulatory limit for
205 u8 channel; /* channel number */
206 u8 flags; /* flags copied from EEPROM */
207 s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
208 s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
209 s8 min_power; /* always 0 */
210 s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
212 u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */
213 u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */
214 enum ieee80211_band band;
216 /* HT40 channel info */
217 s8 ht40_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
218 u8 ht40_flags; /* flags copied from EEPROM */
219 u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */
222 #define IWL_TX_FIFO_BK 0 /* shared */
223 #define IWL_TX_FIFO_BE 1
224 #define IWL_TX_FIFO_VI 2 /* shared */
225 #define IWL_TX_FIFO_VO 3
226 #define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK
227 #define IWL_TX_FIFO_BE_IPAN 4
228 #define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI
229 #define IWL_TX_FIFO_VO_IPAN 5
230 #define IWL_TX_FIFO_UNUSED -1
232 /* Minimum number of queues. MAX_NUM is defined in hw specific files.
233 * Set the minimum to accommodate the 4 standard TX queues, 1 command
234 * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
235 #define IWL_MIN_NUM_QUEUES 10
238 * Command queue depends on iPAN support.
240 #define IWL_DEFAULT_CMD_QUEUE_NUM 4
241 #define IWL_IPAN_CMD_QUEUE_NUM 9
244 * This queue number is required for proper operation
245 * because the ucode will stop/start the scheduler as
248 #define IWL_IPAN_MCAST_QUEUE 8
250 #define IEEE80211_DATA_LEN 2304
251 #define IEEE80211_4ADDR_LEN 30
252 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
253 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
256 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
257 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
258 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
264 CMD_ASYNC = (1 << 1),
265 CMD_WANT_SKB = (1 << 2),
266 CMD_MAPPED = (1 << 3),
269 #define DEF_CMD_PAYLOAD_SIZE 320
272 * struct iwl_device_cmd
274 * For allocation of the command and tx queues, this establishes the overall
275 * size of the largest command we send to uCode, except for commands that
276 * aren't fully copied and use other TFD space.
278 struct iwl_device_cmd {
279 struct iwl_cmd_header hdr; /* uCode API */
285 struct iwl_tx_cmd tx;
286 struct iwl6000_channel_switch_cmd chswitch;
287 u8 payload[DEF_CMD_PAYLOAD_SIZE];
291 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
293 #define IWL_MAX_CMD_TFDS 2
295 enum iwl_hcmd_dataflag {
296 IWL_HCMD_DFL_NOCOPY = BIT(0),
299 struct iwl_host_cmd {
300 const void *data[IWL_MAX_CMD_TFDS];
301 unsigned long reply_page;
302 void (*callback)(struct iwl_priv *priv,
303 struct iwl_device_cmd *cmd,
304 struct iwl_rx_packet *pkt);
306 u16 len[IWL_MAX_CMD_TFDS];
307 u8 dataflags[IWL_MAX_CMD_TFDS];
311 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
312 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
313 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
316 * struct iwl_rx_queue - Rx queue
317 * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
318 * @bd_dma: bus address of buffer of receive buffer descriptors (rbd)
319 * @read: Shared index to newest available Rx buffer
320 * @write: Shared index to oldest written Rx packet
321 * @free_count: Number of pre-allocated buffers in rx_free
322 * @rx_free: list of free SKBs for use
323 * @rx_used: List of Rx buffers with no SKB
324 * @need_update: flag to indicate we need to update read/write index
325 * @rb_stts: driver's pointer to receive buffer status
326 * @rb_stts_dma: bus address of receive buffer status
328 * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
330 struct iwl_rx_queue {
333 struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
334 struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
339 struct list_head rx_free;
340 struct list_head rx_used;
342 struct iwl_rb_status *rb_stts;
343 dma_addr_t rb_stts_dma;
347 #define IWL_SUPPORTED_RATES_IE_LEN 8
349 #define MAX_TID_COUNT 9
351 #define IWL_INVALID_RATE 0xFF
352 #define IWL_INVALID_VALUE -1
355 * struct iwl_ht_agg -- aggregation status while waiting for block-ack
356 * @txq_id: Tx queue used for Tx attempt
357 * @frame_count: # frames attempted by Tx command
358 * @wait_for_ba: Expect block-ack before next Tx reply
359 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
360 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
361 * @bitmap1: High order, one bit for each frame pending ACK in Tx window
362 * @rate_n_flags: Rate at which Tx was attempted
364 * If REPLY_TX indicates that aggregation was attempted, driver must wait
365 * for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
366 * until block ack arrives.
375 #define IWL_AGG_OFF 0
377 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
378 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
384 struct iwl_tid_data {
385 u16 seq_number; /* agn only */
387 struct iwl_ht_agg agg;
397 union iwl_ht_rate_supp {
405 #define CFG_HT_RX_AMPDU_FACTOR_8K (0x0)
406 #define CFG_HT_RX_AMPDU_FACTOR_16K (0x1)
407 #define CFG_HT_RX_AMPDU_FACTOR_32K (0x2)
408 #define CFG_HT_RX_AMPDU_FACTOR_64K (0x3)
409 #define CFG_HT_RX_AMPDU_FACTOR_DEF CFG_HT_RX_AMPDU_FACTOR_64K
410 #define CFG_HT_RX_AMPDU_FACTOR_MAX CFG_HT_RX_AMPDU_FACTOR_64K
411 #define CFG_HT_RX_AMPDU_FACTOR_MIN CFG_HT_RX_AMPDU_FACTOR_8K
414 * Maximal MPDU density for TX aggregation
420 #define CFG_HT_MPDU_DENSITY_2USEC (0x4)
421 #define CFG_HT_MPDU_DENSITY_4USEC (0x5)
422 #define CFG_HT_MPDU_DENSITY_8USEC (0x6)
423 #define CFG_HT_MPDU_DENSITY_16USEC (0x7)
424 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC
425 #define CFG_HT_MPDU_DENSITY_MAX CFG_HT_MPDU_DENSITY_16USEC
426 #define CFG_HT_MPDU_DENSITY_MIN (0x1)
428 struct iwl_ht_config {
429 bool single_chain_sufficient;
430 enum ieee80211_smps_mode smps; /* current smps mode */
434 struct iwl_qos_info {
436 struct iwl_qosparam_cmd def_qos_parm;
440 * Structure should be accessed with sta_lock held. When station addition
441 * is in progress (IWL_STA_UCODE_INPROGRESS) it is possible to access only
442 * the commands (iwl_addsta_cmd and iwl_link_quality_cmd) without sta_lock
445 struct iwl_station_entry {
446 struct iwl_addsta_cmd sta;
447 struct iwl_tid_data tid[MAX_TID_COUNT];
449 struct iwl_hw_key keyinfo;
450 struct iwl_link_quality_cmd *lq;
453 struct iwl_station_priv_common {
454 struct iwl_rxon_context *ctx;
459 * iwl_station_priv: Driver's private station information
461 * When mac80211 creates a station it reserves some space (hw->sta_data_size)
462 * in the structure for use by driver. This structure is places in that
465 struct iwl_station_priv {
466 struct iwl_station_priv_common common;
467 struct iwl_lq_sta lq_sta;
468 atomic_t pending_frames;
475 * struct iwl_vif_priv - driver's private per-interface information
477 * When mac80211 allocates a virtual interface, it can allocate
478 * space for us to put data into.
480 struct iwl_vif_priv {
481 struct iwl_rxon_context *ctx;
482 u8 ibss_bssid_sta_id;
485 /* one for each uCode image (inst/data, boot/init/runtime) */
487 void *v_addr; /* access by driver */
488 dma_addr_t p_addr; /* access by card's busmaster DMA */
493 struct fw_desc code, data;
496 /* v1/v2 uCode file layout */
497 struct iwl_ucode_header {
498 __le32 ver; /* major/minor/API/serial */
501 __le32 inst_size; /* bytes of runtime code */
502 __le32 data_size; /* bytes of runtime data */
503 __le32 init_size; /* bytes of init code */
504 __le32 init_data_size; /* bytes of init data */
505 __le32 boot_size; /* bytes of bootstrap code */
506 u8 data[0]; /* in same order as sizes */
509 __le32 build; /* build number */
510 __le32 inst_size; /* bytes of runtime code */
511 __le32 data_size; /* bytes of runtime data */
512 __le32 init_size; /* bytes of init code */
513 __le32 init_data_size; /* bytes of init data */
514 __le32 boot_size; /* bytes of bootstrap code */
515 u8 data[0]; /* in same order as sizes */
521 * new TLV uCode file layout
523 * The new TLV file format contains TLVs, that each specify
524 * some piece of data. To facilitate "groups", for example
525 * different instruction image with different capabilities,
526 * bundled with the same init image, an alternative mechanism
528 * When the alternative field is 0, that means that the item
529 * is always valid. When it is non-zero, then it is only
530 * valid in conjunction with items of the same alternative,
531 * in which case the driver (user) selects one alternative
535 enum iwl_ucode_tlv_type {
536 IWL_UCODE_TLV_INVALID = 0, /* unused */
537 IWL_UCODE_TLV_INST = 1,
538 IWL_UCODE_TLV_DATA = 2,
539 IWL_UCODE_TLV_INIT = 3,
540 IWL_UCODE_TLV_INIT_DATA = 4,
541 IWL_UCODE_TLV_BOOT = 5,
542 IWL_UCODE_TLV_PROBE_MAX_LEN = 6, /* a u32 value */
543 IWL_UCODE_TLV_PAN = 7,
544 IWL_UCODE_TLV_RUNT_EVTLOG_PTR = 8,
545 IWL_UCODE_TLV_RUNT_EVTLOG_SIZE = 9,
546 IWL_UCODE_TLV_RUNT_ERRLOG_PTR = 10,
547 IWL_UCODE_TLV_INIT_EVTLOG_PTR = 11,
548 IWL_UCODE_TLV_INIT_EVTLOG_SIZE = 12,
549 IWL_UCODE_TLV_INIT_ERRLOG_PTR = 13,
550 IWL_UCODE_TLV_ENHANCE_SENS_TBL = 14,
551 IWL_UCODE_TLV_PHY_CALIBRATION_SIZE = 15,
552 /* 16 and 17 reserved for future use */
553 IWL_UCODE_TLV_FLAGS = 18,
557 * enum iwl_ucode_tlv_flag - ucode API flags
558 * @IWL_UCODE_TLV_FLAGS_PAN: This is PAN capable microcode; this previously
559 * was a separate TLV but moved here to save space.
560 * @IWL_UCODE_TLV_FLAGS_NEWSCAN: new uCode scan behaviour on hidden SSID,
561 * treats good CRC threshold as a boolean
562 * @IWL_UCODE_TLV_FLAGS_MFP: This uCode image supports MFP (802.11w).
564 enum iwl_ucode_tlv_flag {
565 IWL_UCODE_TLV_FLAGS_PAN = BIT(0),
566 IWL_UCODE_TLV_FLAGS_NEWSCAN = BIT(1),
567 IWL_UCODE_TLV_FLAGS_MFP = BIT(2),
570 struct iwl_ucode_tlv {
571 __le16 type; /* see above */
572 __le16 alternative; /* see comment */
573 __le32 length; /* not including type/length fields */
577 #define IWL_TLV_UCODE_MAGIC 0x0a4c5749
579 struct iwl_tlv_ucode_header {
581 * The TLV style ucode header is distinguished from
582 * the v1/v2 style header by first four bytes being
583 * zero, as such is an invalid combination of
584 * major/minor/API/serial versions.
588 u8 human_readable[64];
589 __le32 ver; /* major/minor/API/serial */
591 __le64 alternatives; /* bitmask of valid alternatives */
593 * The data contained herein has a TLV layout,
594 * see above for the TLV header and types.
595 * Note that each TLV is padded to a length
596 * that is a multiple of 4 for alignment.
601 struct iwl_sensitivity_ranges {
608 u16 auto_corr_min_ofdm;
609 u16 auto_corr_min_ofdm_mrc;
610 u16 auto_corr_min_ofdm_x1;
611 u16 auto_corr_min_ofdm_mrc_x1;
613 u16 auto_corr_max_ofdm;
614 u16 auto_corr_max_ofdm_mrc;
615 u16 auto_corr_max_ofdm_x1;
616 u16 auto_corr_max_ofdm_mrc_x1;
618 u16 auto_corr_max_cck;
619 u16 auto_corr_max_cck_mrc;
620 u16 auto_corr_min_cck;
621 u16 auto_corr_min_cck_mrc;
623 u16 barker_corr_th_min;
624 u16 barker_corr_th_min_mrc;
629 #define KELVIN_TO_CELSIUS(x) ((x)-273)
630 #define CELSIUS_TO_KELVIN(x) ((x)+273)
634 * struct iwl_hw_params
635 * @max_txq_num: Max # Tx queues supported
636 * @dma_chnl_num: Number of Tx DMA/FIFO channels
637 * @scd_bc_tbls_size: size of scheduler byte count tables
638 * @tfd_size: TFD size
639 * @tx/rx_chains_num: Number of TX/RX chains
640 * @valid_tx/rx_ant: usable antennas
641 * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
642 * @max_rxq_log: Log-base-2 of max_rxq_size
643 * @rx_page_order: Rx buffer page order
644 * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
646 * @ht40_channel: is 40MHz width possible in band 2.4
647 * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
648 * @sw_crypto: 0 for hw, 1 for sw
649 * @max_xxx_size: for ucode uses
650 * @ct_kill_threshold: temperature threshold
651 * @beacon_time_tsf_bits: number of valid tsf bits for beacon time
652 * @calib_init_cfg: setup initial calibrations for the hw
653 * @calib_rt_cfg: setup runtime calibrations for the hw
654 * @struct iwl_sensitivity_ranges: range of sensitivity values
656 struct iwl_hw_params {
659 u16 scd_bc_tbls_size;
670 u8 max_beacon_itrvl; /* in 1024 ms */
673 u32 ct_kill_threshold; /* value in hw-dependent units */
674 u32 ct_kill_exit_threshold; /* value in hw-dependent units */
675 /* for 1000, 6000 series and up */
676 u16 beacon_time_tsf_bits;
679 const struct iwl_sensitivity_ranges *sens;
683 /******************************************************************************
685 * Functions implemented in core module which are forward declared here
686 * for use by iwl-[4-5].c
688 * NOTE: The implementation of these functions are not hardware specific
689 * which is why they are in the core module files.
691 * Naming convention --
692 * iwl_ <-- Is part of iwlwifi
693 * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
695 ****************************************************************************/
696 extern void iwl_update_chain_flags(struct iwl_priv *priv);
697 extern const u8 iwl_bcast_addr[ETH_ALEN];
698 extern int iwl_rxq_stop(struct iwl_priv *priv);
699 extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
700 extern int iwl_queue_space(const struct iwl_queue *q);
701 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
703 return q->write_ptr >= q->read_ptr ?
704 (i >= q->read_ptr && i < q->write_ptr) :
705 !(i < q->read_ptr && i >= q->write_ptr);
709 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index)
711 return index & (q->n_window - 1);
721 #define IWL_OPERATION_MODE_AUTO 0
722 #define IWL_OPERATION_MODE_HT_ONLY 1
723 #define IWL_OPERATION_MODE_MIXED 2
724 #define IWL_OPERATION_MODE_20MHZ 3
726 #define IWL_TX_CRC_SIZE 4
727 #define IWL_TX_DELIMITER_SIZE 4
729 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
731 /* Sensitivity and chain noise calibration */
732 #define INITIALIZATION_VALUE 0xFFFF
733 #define IWL_CAL_NUM_BEACONS 16
734 #define MAXIMUM_ALLOWED_PATHLOSS 15
736 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
738 #define MAX_FA_OFDM 50
739 #define MIN_FA_OFDM 5
740 #define MAX_FA_CCK 50
743 #define AUTO_CORR_STEP_OFDM 1
745 #define AUTO_CORR_STEP_CCK 3
746 #define AUTO_CORR_MAX_TH_CCK 160
749 #define NRG_STEP_CCK 2
751 #define MAX_NUMBER_CCK_NO_FA 100
753 #define AUTO_CORR_CCK_MIN_VAL_DEF (125)
758 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
759 #define ALL_BAND_FILTER 0xFF00
760 #define IN_BAND_FILTER 0xFF
761 #define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF
763 #define NRG_NUM_PREV_STAT_L 20
764 #define NUM_RX_CHAINS 3
766 enum iwlagn_false_alarm_state {
769 IWL_FA_GOOD_RANGE = 2,
772 enum iwlagn_chain_noise_state {
773 IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
774 IWL_CHAIN_NOISE_ACCUMULATE,
775 IWL_CHAIN_NOISE_CALIBRATED,
776 IWL_CHAIN_NOISE_DONE,
782 * defines the order in which results of initial calibrations
783 * should be sent to the runtime uCode
790 IWL_CALIB_TX_IQ_PERD,
792 IWL_CALIB_TEMP_OFFSET,
796 /* Opaque calibration results */
797 struct iwl_calib_result {
802 /* Sensitivity calib data */
803 struct iwl_sensitivity_data {
805 u32 auto_corr_ofdm_mrc;
806 u32 auto_corr_ofdm_x1;
807 u32 auto_corr_ofdm_mrc_x1;
809 u32 auto_corr_cck_mrc;
811 u32 last_bad_plcp_cnt_ofdm;
812 u32 last_fa_cnt_ofdm;
813 u32 last_bad_plcp_cnt_cck;
819 u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
824 s32 nrg_auto_corr_silence_diff;
825 u32 num_in_cck_no_fa;
828 u16 barker_corr_th_min;
829 u16 barker_corr_th_min_mrc;
833 /* Chain noise (differential Rx gain) calib data */
834 struct iwl_chain_noise_data {
843 u8 disconn_array[NUM_RX_CHAINS];
844 u8 delta_gain_code[NUM_RX_CHAINS];
849 #define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
850 #define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
852 #define IWL_TRAFFIC_ENTRIES (256)
853 #define IWL_TRAFFIC_ENTRY_SIZE (64)
856 MEASUREMENT_READY = (1 << 0),
857 MEASUREMENT_ACTIVE = (1 << 1),
861 NVM_DEVICE_TYPE_EEPROM = 0,
866 * Two types of OTP memory access modes
867 * IWL_OTP_ACCESS_ABSOLUTE - absolute address mode,
868 * based on physical memory addressing
869 * IWL_OTP_ACCESS_RELATIVE - relative address mode,
870 * based on logical memory addressing
872 enum iwl_access_mode {
873 IWL_OTP_ACCESS_ABSOLUTE,
874 IWL_OTP_ACCESS_RELATIVE,
878 * enum iwl_pa_type - Power Amplifier type
879 * @IWL_PA_SYSTEM: based on uCode configuration
880 * @IWL_PA_INTERNAL: use Internal only
887 /* interrupt statistics */
888 struct isr_statistics {
898 u32 rx_handlers[REPLY_MAX];
903 /* reply_tx_statistics (for _agn devices) */
904 struct reply_tx_error_statistics {
910 u32 int_crossed_retry;
926 u32 sta_color_mismatch;
930 /* reply_agg_tx_statistics (for _agn devices) */
931 struct reply_agg_tx_error_statistics {
938 u32 last_sent_bt_kill;
947 /* management statistics */
948 enum iwl_mgmt_stats {
949 MANAGEMENT_ASSOC_REQ = 0,
950 MANAGEMENT_ASSOC_RESP,
951 MANAGEMENT_REASSOC_REQ,
952 MANAGEMENT_REASSOC_RESP,
953 MANAGEMENT_PROBE_REQ,
954 MANAGEMENT_PROBE_RESP,
963 /* control statistics */
964 enum iwl_ctrl_stats {
965 CONTROL_BACK_REQ = 0,
976 struct traffic_stats {
977 #ifdef CONFIG_IWLWIFI_DEBUGFS
978 u32 mgmt[MANAGEMENT_MAX];
979 u32 ctrl[CONTROL_MAX];
986 * schedule the timer to wake up every UCODE_TRACE_PERIOD milliseconds
987 * to perform continuous uCode event logging operation if enabled
989 #define UCODE_TRACE_PERIOD (100)
992 * iwl_event_log: current uCode event log position
994 * @ucode_trace: enable/disable ucode continuous trace timer
995 * @num_wraps: how many times the event buffer wraps
996 * @next_entry: the entry just before the next one that uCode would fill
997 * @non_wraps_count: counter for no wrap detected when dump ucode events
998 * @wraps_once_count: counter for wrap once detected when dump ucode events
999 * @wraps_more_count: counter for wrap more than once detected
1000 * when dump ucode events
1002 struct iwl_event_log {
1006 int non_wraps_count;
1007 int wraps_once_count;
1008 int wraps_more_count;
1012 * host interrupt timeout value
1013 * used with setting interrupt coalescing timer
1014 * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit
1016 * default interrupt coalescing timer is 64 x 32 = 2048 usecs
1017 * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs
1019 #define IWL_HOST_INT_TIMEOUT_MAX (0xFF)
1020 #define IWL_HOST_INT_TIMEOUT_DEF (0x40)
1021 #define IWL_HOST_INT_TIMEOUT_MIN (0x0)
1022 #define IWL_HOST_INT_CALIB_TIMEOUT_MAX (0xFF)
1023 #define IWL_HOST_INT_CALIB_TIMEOUT_DEF (0x10)
1024 #define IWL_HOST_INT_CALIB_TIMEOUT_MIN (0x0)
1027 * This is the threshold value of plcp error rate per 100mSecs. It is
1028 * used to set and check for the validity of plcp_delta.
1030 #define IWL_MAX_PLCP_ERR_THRESHOLD_MIN (1)
1031 #define IWL_MAX_PLCP_ERR_THRESHOLD_DEF (50)
1032 #define IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF (100)
1033 #define IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF (200)
1034 #define IWL_MAX_PLCP_ERR_THRESHOLD_MAX (255)
1035 #define IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE (0)
1037 #define IWL_DELAY_NEXT_FORCE_RF_RESET (HZ*3)
1038 #define IWL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5)
1040 /* TX queue watchdog timeouts in mSecs */
1041 #define IWL_DEF_WD_TIMEOUT (2000)
1042 #define IWL_LONG_WD_TIMEOUT (10000)
1043 #define IWL_MAX_WD_TIMEOUT (120000)
1045 /* BT Antenna Coupling Threshold (dB) */
1046 #define IWL_BT_ANTENNA_COUPLING_THRESHOLD (35)
1048 /* Firmware reload counter and Timestamp */
1049 #define IWL_MIN_RELOAD_DURATION 1000 /* 1000 ms */
1050 #define IWL_MAX_CONTINUE_RELOAD_CNT 4
1056 IWL_MAX_FORCE_RESET,
1059 struct iwl_force_reset {
1060 int reset_request_count;
1061 int reset_success_count;
1062 int reset_reject_count;
1063 unsigned long reset_duration;
1064 unsigned long last_force_reset_jiffies;
1067 /* extend beacon time format bit shifting */
1070 * bits 31:22 - extended
1071 * bits 21:0 - interval
1073 #define IWLAGN_EXT_BEACON_TIME_POS 22
1076 * struct iwl_notification_wait - notification wait entry
1077 * @list: list head for global list
1078 * @fn: function called with the notification
1081 * This structure is not used directly, to wait for a
1082 * notification declare it on the stack, and call
1083 * iwlagn_init_notification_wait() with appropriate
1084 * parameters. Then do whatever will cause the ucode
1085 * to notify the driver, and to wait for that then
1086 * call iwlagn_wait_notification().
1088 * Each notification is one-shot. If at some point we
1089 * need to support multi-shot notifications (which
1090 * can't be allocated on the stack) we need to modify
1091 * the code for them.
1093 struct iwl_notification_wait {
1094 struct list_head list;
1096 void (*fn)(struct iwl_priv *priv, struct iwl_rx_packet *pkt,
1101 bool triggered, aborted;
1104 enum iwl_rxon_context_id {
1111 struct iwl_rxon_context {
1112 struct ieee80211_vif *vif;
1114 const u8 *ac_to_fifo;
1115 const u8 *ac_to_queue;
1119 * We could use the vif to indicate active, but we
1120 * also need it to be active during disabling when
1121 * we already removed the vif for type setting.
1123 bool always_active, is_active;
1125 bool ht_need_multiple_chains;
1127 enum iwl_rxon_context_id ctxid;
1129 u32 interface_modes, exclusive_interface_modes;
1130 u8 unused_devtype, ap_devtype, ibss_devtype, station_devtype;
1133 * We declare this const so it can only be
1134 * changed via explicit cast within the
1135 * routines that actually update the physical
1138 const struct iwl_rxon_cmd active;
1139 struct iwl_rxon_cmd staging;
1141 struct iwl_rxon_time_cmd timing;
1143 struct iwl_qos_info qos_data;
1145 u8 bcast_sta_id, ap_sta_id;
1147 u8 rxon_cmd, rxon_assoc_cmd, rxon_timing_cmd;
1151 struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
1152 u8 key_mapping_keys;
1154 __le32 station_flags;
1157 bool non_gf_sta_present;
1159 bool enabled, is_40mhz;
1160 u8 extension_chan_offset;
1163 bool last_tx_rejected;
1166 enum iwl_scan_type {
1168 IWL_SCAN_RADIO_RESET,
1172 enum iwlagn_ucode_type {
1179 #ifdef CONFIG_IWLWIFI_DEVICE_SVTOOL
1180 struct iwl_testmode_trace {
1186 dma_addr_t dma_addr;
1194 * struct iwl_bus_ops - bus specific operations
1196 * @get_pm_support: must returns true if the bus can go to sleep
1197 * @apm_config: will be called during the config of the APM configuration
1198 * @set_drv_data: set the priv pointer to the bus layer
1199 * @get_dev: returns the device struct
1200 * @get_irq: returns the irq number
1201 * @get_hw_id: prints the hw_id in the provided buffer
1202 * @write8: write a byte to register at offset ofs
1203 * @write32: write a dword to register at offset ofs
1204 * @wread32: read a dword at register at offset ofs
1206 struct iwl_bus_ops {
1207 bool (*get_pm_support)(struct iwl_bus *bus);
1208 void (*apm_config)(struct iwl_bus *bus);
1209 void (*set_drv_data)(struct iwl_bus *bus, void *priv);
1210 struct device *(*get_dev)(const struct iwl_bus *bus);
1211 unsigned int (*get_irq)(const struct iwl_bus *bus);
1212 void (*get_hw_id)(struct iwl_bus *bus, char buf[], int buf_len);
1213 void (*write8)(struct iwl_bus *bus, u32 ofs, u8 val);
1214 void (*write32)(struct iwl_bus *bus, u32 ofs, u32 val);
1215 u32 (*read32)(struct iwl_bus *bus, u32 ofs);
1219 /* pointer to bus specific struct */
1222 /* Common data to all buses */
1223 struct iwl_priv *priv; /* driver's context */
1225 struct iwl_bus_ops *ops;
1232 * struct iwl_trans_ops - transport specific operations
1234 * @rx_init: inits the rx memory, allocate it if needed
1235 * @rx_free: frees the rx memory
1236 * @tx_init:inits the tx memory, allocate if needed
1238 struct iwl_trans_ops {
1239 int (*rx_init)(struct iwl_priv *priv);
1240 void (*rx_free)(struct iwl_priv *priv);
1241 int (*tx_init)(struct iwl_priv *priv);
1245 const struct iwl_trans_ops *ops;
1250 /* ieee device used by generic ieee processing code */
1251 struct ieee80211_hw *hw;
1252 struct ieee80211_channel *ieee_channels;
1253 struct ieee80211_rate *ieee_rates;
1254 struct iwl_cfg *cfg;
1256 enum ieee80211_band band;
1258 void (*pre_rx_handler)(struct iwl_priv *priv,
1259 struct iwl_rx_mem_buffer *rxb);
1260 void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
1261 struct iwl_rx_mem_buffer *rxb);
1263 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
1265 /* spectrum measurement report caching */
1266 struct iwl_spectrum_notification measure_report;
1267 u8 measurement_status;
1269 /* ucode beacon time */
1270 u32 ucode_beacon_time;
1271 int missed_beacon_threshold;
1273 /* track IBSS manager (last beacon) status */
1276 /* jiffies when last recovery from statistics was performed */
1277 unsigned long rx_statistics_jiffies;
1280 struct iwl_force_reset force_reset[IWL_MAX_FORCE_RESET];
1282 /* firmware reload counter and timestamp */
1283 unsigned long reload_jiffies;
1286 /* we allocate array of iwl_channel_info for NIC's valid channels.
1287 * Access via channel # using indirect index array */
1288 struct iwl_channel_info *channel_info; /* channel info array */
1289 u8 channel_count; /* # of channels */
1291 /* thermal calibration */
1292 s32 temperature; /* degrees Kelvin */
1293 s32 last_temperature;
1295 /* init calibration results */
1296 struct iwl_calib_result calib_results[IWL_CALIB_MAX];
1298 /* Scan related variables */
1299 unsigned long scan_start;
1300 unsigned long scan_start_tsf;
1302 enum ieee80211_band scan_band;
1303 struct cfg80211_scan_request *scan_request;
1304 struct ieee80211_vif *scan_vif;
1305 enum iwl_scan_type scan_type;
1306 u8 scan_tx_ant[IEEE80211_NUM_BANDS];
1310 spinlock_t lock; /* protect general shared data */
1311 spinlock_t hcmd_lock; /* protect hcmd */
1312 spinlock_t reg_lock; /* protect hw register access */
1315 struct iwl_bus bus; /* bus specific data */
1316 struct iwl_trans trans;
1318 /* microcode/device supports multiple contexts */
1321 /* command queue number */
1324 /* max number of station keys */
1327 bool new_scan_threshold_behaviour;
1329 /* EEPROM MAC addresses */
1330 struct mac_address addresses[2];
1332 /* uCode images, save to reload in case of failure */
1333 int fw_index; /* firmware we're trying to load */
1334 u32 ucode_ver; /* version of ucode, copy of
1336 struct fw_img ucode_rt;
1337 struct fw_img ucode_init;
1339 enum iwlagn_ucode_type ucode_type;
1340 u8 ucode_write_complete; /* the image write is complete */
1341 char firmware_name[25];
1343 struct iwl_rxon_context contexts[NUM_IWL_RXON_CTX];
1345 __le16 switch_channel;
1348 u32 error_event_table;
1349 u32 log_event_table;
1355 struct iwl_sensitivity_data sensitivity_data;
1356 struct iwl_chain_noise_data chain_noise_data;
1357 bool enhance_sensitivity_table;
1358 __le16 sensitivity_tbl[HD_TABLE_SIZE];
1359 __le16 enhance_sensitivity_tbl[ENHANCE_HD_TABLE_ENTRIES];
1361 struct iwl_ht_config current_ht_config;
1363 /* Rate scaling data */
1366 wait_queue_head_t wait_command_queue;
1368 int activity_timer_active;
1370 /* Rx and Tx DMA processing queues */
1371 struct iwl_rx_queue rxq;
1372 struct iwl_tx_queue *txq;
1373 unsigned long txq_ctx_active_msk;
1374 struct iwl_dma_ptr kw; /* keep warm address */
1375 struct iwl_dma_ptr scd_bc_tbls;
1377 u32 scd_base_addr; /* scheduler sram base address */
1379 unsigned long status;
1381 /* counts mgmt, ctl, and data packets */
1382 struct traffic_stats tx_stats;
1383 struct traffic_stats rx_stats;
1385 /* counts interrupts */
1386 struct isr_statistics isr_stats;
1388 struct iwl_power_mgr power_data;
1389 struct iwl_tt_mgmt thermal_throttle;
1391 /* station table variables */
1393 /* Note: if lock and sta_lock are needed, lock must be acquired first */
1394 spinlock_t sta_lock;
1396 struct iwl_station_entry stations[IWLAGN_STATION_COUNT];
1397 unsigned long ucode_key_table;
1399 /* queue refcounts */
1400 #define IWL_MAX_HW_QUEUES 32
1401 unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
1403 atomic_t queue_stop_count[4];
1405 /* Indication if ieee80211_ops->open has been called */
1408 u8 mac80211_registered;
1410 /* eeprom -- this is in the card's little endian byte order */
1412 int nvm_device_type;
1413 struct iwl_eeprom_calib_info *calib_info;
1415 enum nl80211_iftype iw_mode;
1417 /* Last Rx'd beacon timestamp */
1422 struct statistics_general_common common;
1423 struct statistics_rx_non_phy rx_non_phy;
1424 struct statistics_rx_phy rx_ofdm;
1425 struct statistics_rx_ht_phy rx_ofdm_ht;
1426 struct statistics_rx_phy rx_cck;
1427 struct statistics_tx tx;
1428 #ifdef CONFIG_IWLWIFI_DEBUGFS
1429 struct statistics_bt_activity bt_activity;
1430 __le32 num_bt_kills, accum_num_bt_kills;
1433 #ifdef CONFIG_IWLWIFI_DEBUGFS
1435 struct statistics_general_common common;
1436 struct statistics_rx_non_phy rx_non_phy;
1437 struct statistics_rx_phy rx_ofdm;
1438 struct statistics_rx_ht_phy rx_ofdm_ht;
1439 struct statistics_rx_phy rx_cck;
1440 struct statistics_tx tx;
1441 struct statistics_bt_activity bt_activity;
1442 } accum_stats, delta_stats, max_delta_stats;
1449 dma_addr_t ict_tbl_dma;
1450 dma_addr_t aligned_ict_tbl_dma;
1455 * reporting the number of tids has AGG on. 0 means
1460 struct iwl_rx_phy_res last_phy_res;
1461 bool last_phy_res_valid;
1463 struct completion firmware_loading_complete;
1465 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1466 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1469 * chain noise reset and gain commands are the
1470 * two extra calibration commands follows the standard
1471 * phy calibration commands
1473 u8 phy_calib_chain_noise_reset_cmd;
1474 u8 phy_calib_chain_noise_gain_cmd;
1476 /* counts reply_tx error */
1477 struct reply_tx_error_statistics reply_tx_stats;
1478 struct reply_agg_tx_error_statistics reply_agg_tx_stats;
1479 /* notification wait support */
1480 struct list_head notif_waits;
1481 spinlock_t notif_wait_lock;
1482 wait_queue_head_t notif_waitq;
1484 /* remain-on-channel offload support */
1485 struct ieee80211_channel *hw_roc_channel;
1486 struct delayed_work hw_roc_work;
1487 enum nl80211_channel_type hw_roc_chantype;
1488 int hw_roc_duration;
1491 struct sk_buff *offchan_tx_skb;
1492 int offchan_tx_timeout;
1493 struct ieee80211_channel *offchan_tx_chan;
1499 u8 bt_traffic_load, last_bt_traffic_load;
1500 bool bt_ch_announce;
1501 bool bt_full_concurrent;
1502 bool bt_ant_couple_ok;
1503 __le32 kill_ack_mask;
1504 __le32 kill_cts_mask;
1508 u16 dynamic_frag_thresh;
1509 u8 bt_ci_compliance;
1510 struct work_struct bt_traffic_change_work;
1512 struct iwl_hw_params hw_params;
1516 struct workqueue_struct *workqueue;
1518 struct work_struct restart;
1519 struct work_struct scan_completed;
1520 struct work_struct rx_replenish;
1521 struct work_struct abort_scan;
1523 struct work_struct beacon_update;
1524 struct iwl_rxon_context *beacon_ctx;
1525 struct sk_buff *beacon_skb;
1528 struct work_struct tt_work;
1529 struct work_struct ct_enter;
1530 struct work_struct ct_exit;
1531 struct work_struct start_internal_scan;
1532 struct work_struct tx_flush;
1533 struct work_struct bt_full_concurrency;
1534 struct work_struct bt_runtime_config;
1536 struct tasklet_struct irq_tasklet;
1538 struct delayed_work scan_check;
1541 s8 tx_power_user_lmt;
1542 s8 tx_power_device_lmt;
1543 s8 tx_power_lmt_in_half_dbm; /* max tx power in half-dBm format */
1547 #ifdef CONFIG_IWLWIFI_DEBUG
1548 /* debugging info */
1549 u32 debug_level; /* per device debugging will override global
1550 iwl_debug_level if set */
1551 #endif /* CONFIG_IWLWIFI_DEBUG */
1552 #ifdef CONFIG_IWLWIFI_DEBUGFS
1558 struct dentry *debugfs_dir;
1559 u32 dbgfs_sram_offset, dbgfs_sram_len;
1561 #endif /* CONFIG_IWLWIFI_DEBUGFS */
1563 struct work_struct txpower_work;
1564 u32 disable_sens_cal;
1565 u32 disable_chain_noise_cal;
1566 struct work_struct run_time_calib_work;
1567 struct timer_list statistics_periodic;
1568 struct timer_list ucode_trace;
1569 struct timer_list watchdog;
1571 struct iwl_event_log event_log;
1573 struct led_classdev led;
1574 unsigned long blink_on, blink_off;
1575 bool led_registered;
1576 #ifdef CONFIG_IWLWIFI_DEVICE_SVTOOL
1577 struct iwl_testmode_trace testmode_trace;
1583 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
1585 set_bit(txq_id, &priv->txq_ctx_active_msk);
1588 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
1590 clear_bit(txq_id, &priv->txq_ctx_active_msk);
1593 #ifdef CONFIG_IWLWIFI_DEBUG
1595 * iwl_get_debug_level: Return active debug level for device
1597 * Using sysfs it is possible to set per device debug level. This debug
1598 * level will be used if set, otherwise the global debug level which can be
1599 * set via module parameter is used.
1601 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1603 if (priv->debug_level)
1604 return priv->debug_level;
1606 return iwl_debug_level;
1609 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1611 return iwl_debug_level;
1616 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1617 int txq_id, int idx)
1619 if (priv->txq[txq_id].txb[idx].skb)
1620 return (struct ieee80211_hdr *)priv->txq[txq_id].
1625 static inline struct iwl_rxon_context *
1626 iwl_rxon_ctx_from_vif(struct ieee80211_vif *vif)
1628 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1630 return vif_priv->ctx;
1633 #define for_each_context(priv, ctx) \
1634 for (ctx = &priv->contexts[IWL_RXON_CTX_BSS]; \
1635 ctx < &priv->contexts[NUM_IWL_RXON_CTX]; ctx++) \
1636 if (priv->valid_contexts & BIT(ctx->ctxid))
1638 static inline int iwl_is_associated_ctx(struct iwl_rxon_context *ctx)
1640 return (ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1643 static inline int iwl_is_associated(struct iwl_priv *priv,
1644 enum iwl_rxon_context_id ctxid)
1646 return iwl_is_associated_ctx(&priv->contexts[ctxid]);
1649 static inline int iwl_is_any_associated(struct iwl_priv *priv)
1651 struct iwl_rxon_context *ctx;
1652 for_each_context(priv, ctx)
1653 if (iwl_is_associated_ctx(ctx))
1658 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1660 if (ch_info == NULL)
1662 return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1665 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1667 return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1670 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1672 return ch_info->band == IEEE80211_BAND_5GHZ;
1675 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1677 return ch_info->band == IEEE80211_BAND_2GHZ;
1680 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1682 return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1685 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1687 return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1690 static inline void __iwl_free_pages(struct iwl_priv *priv, struct page *page)
1692 __free_pages(page, priv->hw_params.rx_page_order);
1695 static inline void iwl_free_pages(struct iwl_priv *priv, unsigned long page)
1697 free_pages(page, priv->hw_params.rx_page_order);
1699 #endif /* __iwl_dev_h__ */