1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 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.
29 * Please use iwl-4965-hw.h for hardware-related definitions.
35 #include <linux/pci.h> /* for struct pci_device_id */
36 #include <linux/kernel.h>
37 #include <net/ieee80211_radiotap.h>
39 #include "iwl-eeprom.h"
43 #include "iwl-debug.h"
44 #include "iwl-4965-hw.h"
45 #include "iwl-3945-hw.h"
46 #include "iwl-agn-hw.h"
48 #include "iwl-power.h"
49 #include "iwl-agn-rs.h"
53 /* CT-KILL constants */
54 #define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */
55 #define CT_KILL_THRESHOLD 114 /* in Celsius */
56 #define CT_KILL_EXIT_THRESHOLD 95 /* in Celsius */
58 /* Default noise level to report when noise measurement is not available.
59 * This may be because we're:
60 * 1) Not associated (4965, no beacon statistics being sent to driver)
61 * 2) Scanning (noise measurement does not apply to associated channel)
62 * 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
63 * Use default noise value of -127 ... this is below the range of measurable
64 * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
65 * Also, -127 works better than 0 when averaging frames with/without
66 * noise info (e.g. averaging might be done in app); measured dBm values are
67 * always negative ... using a negative value as the default keeps all
68 * averages within an s8's (used in some apps) range of negative values. */
69 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
72 * RTS threshold here is total size [2347] minus 4 FCS bytes
74 * a value of 0 means RTS on all data/management packets
75 * a value > max MSDU size means no RTS
76 * else RTS for data/management frames where MPDU is larger
79 #define DEFAULT_RTS_THRESHOLD 2347U
80 #define MIN_RTS_THRESHOLD 0U
81 #define MAX_RTS_THRESHOLD 2347U
82 #define MAX_MSDU_SIZE 2304U
83 #define MAX_MPDU_SIZE 2346U
84 #define DEFAULT_BEACON_INTERVAL 100U
85 #define DEFAULT_SHORT_RETRY_LIMIT 7U
86 #define DEFAULT_LONG_RETRY_LIMIT 4U
88 struct iwl_rx_mem_buffer {
91 struct list_head list;
94 #define rxb_addr(r) page_address(r->page)
97 struct iwl_device_cmd;
100 /* only for SYNC commands, iff the reply skb is wanted */
101 struct iwl_host_cmd *source;
103 * only for ASYNC commands
104 * (which is somewhat stupid -- look at iwl-sta.c for instance
105 * which duplicates a bunch of code because the callback isn't
106 * invoked for SYNC commands, if it were and its result passed
107 * through it would be simpler...)
109 void (*callback)(struct iwl_priv *priv,
110 struct iwl_device_cmd *cmd,
111 struct iwl_rx_packet *pkt);
113 /* The CMD_SIZE_HUGE flag bit indicates that the command
114 * structure is stored at the end of the shared queue memory. */
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
127 int n_bd; /* number of BDs in this queue */
128 int write_ptr; /* 1-st empty entry (index) host_w*/
129 int read_ptr; /* last used entry (index) host_r*/
130 /* use for monitoring and recovering the stuck queue */
131 int last_read_ptr; /* storing the last read_ptr */
132 /* number of time read_ptr and last_read_ptr are the same */
133 u8 repeat_same_read_ptr;
134 dma_addr_t dma_addr; /* physical addr for BD's */
135 int n_window; /* safe queue window */
137 int low_mark; /* low watermark, resume queue if free
138 * space more than this */
139 int high_mark; /* high watermark, stop queue if free
140 * space less than this */
141 } __attribute__ ((packed));
143 /* One for each TFD */
149 * struct iwl_tx_queue - Tx Queue for DMA
150 * @q: generic Rx/Tx queue descriptor
151 * @bd: base of circular buffer of TFDs
152 * @cmd: array of command/TX buffer pointers
153 * @meta: array of meta data for each command/tx buffer
154 * @dma_addr_cmd: physical address of cmd/tx buffer array
155 * @txb: array of per-TFD driver data
156 * @need_update: indicates need to update read/write index
157 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
159 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
160 * descriptors) and required locking structures.
162 #define TFD_TX_CMD_SLOTS 256
163 #define TFD_CMD_SLOTS 32
165 struct iwl_tx_queue {
168 struct iwl_device_cmd **cmd;
169 struct iwl_cmd_meta *meta;
170 struct iwl_tx_info *txb;
177 #define IWL_NUM_SCAN_RATES (2)
179 struct iwl4965_channel_tgd_info {
184 struct iwl4965_channel_tgh_info {
188 #define IWL4965_MAX_RATE (33)
190 struct iwl3945_clip_group {
191 /* maximum power level to prevent clipping for each rate, derived by
192 * us from this band's saturation power in EEPROM */
193 const s8 clip_powers[IWL_MAX_RATES];
196 /* current Tx power values to use, one for each rate for each channel.
197 * requested power is limited by:
198 * -- regulatory EEPROM limits for this channel
199 * -- hardware capabilities (clip-powers)
200 * -- spectrum management
201 * -- user preference (e.g. iwconfig)
202 * when requested power is set, base power index must also be set. */
203 struct iwl3945_channel_power_info {
204 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
205 s8 power_table_index; /* actual (compenst'd) index into gain table */
206 s8 base_power_index; /* gain index for power at factory temp. */
207 s8 requested_power; /* power (dBm) requested for this chnl/rate */
210 /* current scan Tx power values to use, one for each scan rate for each
212 struct iwl3945_scan_power_info {
213 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
214 s8 power_table_index; /* actual (compenst'd) index into gain table */
215 s8 requested_power; /* scan pwr (dBm) requested for chnl/rate */
219 * One for each channel, holds all channel setup data
220 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
223 struct iwl_channel_info {
224 struct iwl4965_channel_tgd_info tgd;
225 struct iwl4965_channel_tgh_info tgh;
226 struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */
227 struct iwl_eeprom_channel ht40_eeprom; /* EEPROM regulatory limit for
230 u8 channel; /* channel number */
231 u8 flags; /* flags copied from EEPROM */
232 s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
233 s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
234 s8 min_power; /* always 0 */
235 s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
237 u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */
238 u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */
239 enum ieee80211_band band;
241 /* HT40 channel info */
242 s8 ht40_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
243 u8 ht40_flags; /* flags copied from EEPROM */
244 u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */
246 /* Radio/DSP gain settings for each "normal" data Tx rate.
247 * These include, in addition to RF and DSP gain, a few fields for
248 * remembering/modifying gain settings (indexes). */
249 struct iwl3945_channel_power_info power_info[IWL4965_MAX_RATE];
251 /* Radio/DSP gain settings for each scan rate, for directed scans. */
252 struct iwl3945_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
255 #define IWL_TX_FIFO_BK 0
256 #define IWL_TX_FIFO_BE 1
257 #define IWL_TX_FIFO_VI 2
258 #define IWL_TX_FIFO_VO 3
259 #define IWL_TX_FIFO_UNUSED -1
261 /* Minimum number of queues. MAX_NUM is defined in hw specific files.
262 * Set the minimum to accommodate the 4 standard TX queues, 1 command
263 * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
264 #define IWL_MIN_NUM_QUEUES 10
267 * Queue #4 is the command queue for 3945/4965/5x00/1000/6x00,
268 * the driver maps it into the appropriate device FIFO for the
271 #define IWL_CMD_QUEUE_NUM 4
273 /* Power management (not Tx power) structures */
280 #define IEEE80211_DATA_LEN 2304
281 #define IEEE80211_4ADDR_LEN 30
282 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
283 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
287 struct ieee80211_hdr frame;
288 struct iwl_tx_beacon_cmd beacon;
289 u8 raw[IEEE80211_FRAME_LEN];
292 struct list_head list;
295 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
296 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
297 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
303 CMD_SIZE_HUGE = (1 << 0),
304 CMD_ASYNC = (1 << 1),
305 CMD_WANT_SKB = (1 << 2),
308 #define DEF_CMD_PAYLOAD_SIZE 320
311 * struct iwl_device_cmd
313 * For allocation of the command and tx queues, this establishes the overall
314 * size of the largest command we send to uCode, except for a scan command
315 * (which is relatively huge; space is allocated separately).
317 struct iwl_device_cmd {
318 struct iwl_cmd_header hdr; /* uCode API */
324 struct iwl_tx_cmd tx;
325 struct iwl6000_channel_switch_cmd chswitch;
326 u8 payload[DEF_CMD_PAYLOAD_SIZE];
327 } __attribute__ ((packed)) cmd;
328 } __attribute__ ((packed));
330 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
333 struct iwl_host_cmd {
335 unsigned long reply_page;
336 void (*callback)(struct iwl_priv *priv,
337 struct iwl_device_cmd *cmd,
338 struct iwl_rx_packet *pkt);
344 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
345 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
346 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
349 * struct iwl_rx_queue - Rx queue
350 * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
351 * @dma_addr: bus address of buffer of receive buffer descriptors (rbd)
352 * @read: Shared index to newest available Rx buffer
353 * @write: Shared index to oldest written Rx packet
354 * @free_count: Number of pre-allocated buffers in rx_free
355 * @rx_free: list of free SKBs for use
356 * @rx_used: List of Rx buffers with no SKB
357 * @need_update: flag to indicate we need to update read/write index
358 * @rb_stts: driver's pointer to receive buffer status
359 * @rb_stts_dma: bus address of receive buffer status
361 * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
363 struct iwl_rx_queue {
366 struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
367 struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
372 struct list_head rx_free;
373 struct list_head rx_used;
375 struct iwl_rb_status *rb_stts;
376 dma_addr_t rb_stts_dma;
380 #define IWL_SUPPORTED_RATES_IE_LEN 8
382 #define MAX_TID_COUNT 9
384 #define IWL_INVALID_RATE 0xFF
385 #define IWL_INVALID_VALUE -1
388 * struct iwl_ht_agg -- aggregation status while waiting for block-ack
389 * @txq_id: Tx queue used for Tx attempt
390 * @frame_count: # frames attempted by Tx command
391 * @wait_for_ba: Expect block-ack before next Tx reply
392 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
393 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
394 * @bitmap1: High order, one bit for each frame pending ACK in Tx window
395 * @rate_n_flags: Rate at which Tx was attempted
397 * If REPLY_TX indicates that aggregation was attempted, driver must wait
398 * for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
399 * until block ack arrives.
408 #define IWL_AGG_OFF 0
410 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
411 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
416 struct iwl_tid_data {
417 u16 seq_number; /* agn only */
419 struct iwl_ht_agg agg;
423 enum ieee80211_key_alg alg;
429 union iwl_ht_rate_supp {
437 #define CFG_HT_RX_AMPDU_FACTOR_DEF (0x3)
440 * Maximal MPDU density for TX aggregation
446 #define CFG_HT_MPDU_DENSITY_4USEC (0x5)
447 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC
449 struct iwl_ht_config {
450 /* self configuration data */
453 bool single_chain_sufficient;
454 enum ieee80211_smps_mode smps; /* current smps mode */
455 /* BSS related data */
456 u8 extension_chan_offset;
458 u8 non_GF_STA_present;
462 struct iwl_qos_info {
464 struct iwl_qosparam_cmd def_qos_parm;
468 * Structure should be accessed with sta_lock held. When station addition
469 * is in progress (IWL_STA_UCODE_INPROGRESS) it is possible to access only
470 * the commands (iwl_addsta_cmd and iwl_link_quality_cmd) without sta_lock
473 struct iwl_station_entry {
474 struct iwl_addsta_cmd sta;
475 struct iwl_tid_data tid[MAX_TID_COUNT];
477 struct iwl_hw_key keyinfo;
478 struct iwl_link_quality_cmd *lq;
481 struct iwl_station_priv_common {
486 * iwl_station_priv: Driver's private station information
488 * When mac80211 creates a station it reserves some space (hw->sta_data_size)
489 * in the structure for use by driver. This structure is places in that
492 * The common struct MUST be first because it is shared between
495 struct iwl_station_priv {
496 struct iwl_station_priv_common common;
497 struct iwl_lq_sta lq_sta;
498 atomic_t pending_frames;
504 * struct iwl_vif_priv - driver's private per-interface information
506 * When mac80211 allocates a virtual interface, it can allocate
507 * space for us to put data into.
509 struct iwl_vif_priv {
510 u8 ibss_bssid_sta_id;
513 /* one for each uCode image (inst/data, boot/init/runtime) */
515 void *v_addr; /* access by driver */
516 dma_addr_t p_addr; /* access by card's busmaster DMA */
520 /* v1/v2 uCode file layout */
521 struct iwl_ucode_header {
522 __le32 ver; /* major/minor/API/serial */
525 __le32 inst_size; /* bytes of runtime code */
526 __le32 data_size; /* bytes of runtime data */
527 __le32 init_size; /* bytes of init code */
528 __le32 init_data_size; /* bytes of init data */
529 __le32 boot_size; /* bytes of bootstrap code */
530 u8 data[0]; /* in same order as sizes */
533 __le32 build; /* build number */
534 __le32 inst_size; /* bytes of runtime code */
535 __le32 data_size; /* bytes of runtime data */
536 __le32 init_size; /* bytes of init code */
537 __le32 init_data_size; /* bytes of init data */
538 __le32 boot_size; /* bytes of bootstrap code */
539 u8 data[0]; /* in same order as sizes */
545 * new TLV uCode file layout
547 * The new TLV file format contains TLVs, that each specify
548 * some piece of data. To facilitate "groups", for example
549 * different instruction image with different capabilities,
550 * bundled with the same init image, an alternative mechanism
552 * When the alternative field is 0, that means that the item
553 * is always valid. When it is non-zero, then it is only
554 * valid in conjunction with items of the same alternative,
555 * in which case the driver (user) selects one alternative
559 enum iwl_ucode_tlv_type {
560 IWL_UCODE_TLV_INVALID = 0, /* unused */
561 IWL_UCODE_TLV_INST = 1,
562 IWL_UCODE_TLV_DATA = 2,
563 IWL_UCODE_TLV_INIT = 3,
564 IWL_UCODE_TLV_INIT_DATA = 4,
565 IWL_UCODE_TLV_BOOT = 5,
566 IWL_UCODE_TLV_PROBE_MAX_LEN = 6, /* a u32 value */
567 IWL_UCODE_TLV_RUNT_EVTLOG_PTR = 8,
568 IWL_UCODE_TLV_RUNT_EVTLOG_SIZE = 9,
569 IWL_UCODE_TLV_RUNT_ERRLOG_PTR = 10,
570 IWL_UCODE_TLV_INIT_EVTLOG_PTR = 11,
571 IWL_UCODE_TLV_INIT_EVTLOG_SIZE = 12,
572 IWL_UCODE_TLV_INIT_ERRLOG_PTR = 13,
575 struct iwl_ucode_tlv {
576 __le16 type; /* see above */
577 __le16 alternative; /* see comment */
578 __le32 length; /* not including type/length fields */
580 } __attribute__ ((packed));
582 #define IWL_TLV_UCODE_MAGIC 0x0a4c5749
584 struct iwl_tlv_ucode_header {
586 * The TLV style ucode header is distinguished from
587 * the v1/v2 style header by first four bytes being
588 * zero, as such is an invalid combination of
589 * major/minor/API/serial versions.
593 u8 human_readable[64];
594 __le32 ver; /* major/minor/API/serial */
596 __le64 alternatives; /* bitmask of valid alternatives */
598 * The data contained herein has a TLV layout,
599 * see above for the TLV header and types.
600 * Note that each TLV is padded to a length
601 * that is a multiple of 4 for alignment.
606 struct iwl4965_ibss_seq {
610 unsigned long packet_time;
611 struct list_head list;
614 struct iwl_sensitivity_ranges {
621 u16 auto_corr_min_ofdm;
622 u16 auto_corr_min_ofdm_mrc;
623 u16 auto_corr_min_ofdm_x1;
624 u16 auto_corr_min_ofdm_mrc_x1;
626 u16 auto_corr_max_ofdm;
627 u16 auto_corr_max_ofdm_mrc;
628 u16 auto_corr_max_ofdm_x1;
629 u16 auto_corr_max_ofdm_mrc_x1;
631 u16 auto_corr_max_cck;
632 u16 auto_corr_max_cck_mrc;
633 u16 auto_corr_min_cck;
634 u16 auto_corr_min_cck_mrc;
636 u16 barker_corr_th_min;
637 u16 barker_corr_th_min_mrc;
642 #define KELVIN_TO_CELSIUS(x) ((x)-273)
643 #define CELSIUS_TO_KELVIN(x) ((x)+273)
647 * struct iwl_hw_params
648 * @max_txq_num: Max # Tx queues supported
649 * @dma_chnl_num: Number of Tx DMA/FIFO channels
650 * @scd_bc_tbls_size: size of scheduler byte count tables
651 * @tfd_size: TFD size
652 * @tx/rx_chains_num: Number of TX/RX chains
653 * @valid_tx/rx_ant: usable antennas
654 * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
655 * @max_rxq_log: Log-base-2 of max_rxq_size
656 * @rx_page_order: Rx buffer page order
657 * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
660 * @ht40_channel: is 40MHz width possible in band 2.4
661 * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
662 * @sw_crypto: 0 for hw, 1 for sw
663 * @max_xxx_size: for ucode uses
664 * @ct_kill_threshold: temperature threshold
665 * @beacon_time_tsf_bits: number of valid tsf bits for beacon time
666 * @calib_init_cfg: setup initial calibrations for the hw
667 * @struct iwl_sensitivity_ranges: range of sensitivity values
669 struct iwl_hw_params {
672 u16 scd_bc_tbls_size;
685 u8 max_beacon_itrvl; /* in 1024 ms */
689 u32 ct_kill_threshold; /* value in hw-dependent units */
690 u32 ct_kill_exit_threshold; /* value in hw-dependent units */
691 /* for 1000, 6000 series and up */
692 u16 beacon_time_tsf_bits;
694 const struct iwl_sensitivity_ranges *sens;
698 /******************************************************************************
700 * Functions implemented in core module which are forward declared here
701 * for use by iwl-[4-5].c
703 * NOTE: The implementation of these functions are not hardware specific
704 * which is why they are in the core module files.
706 * Naming convention --
707 * iwl_ <-- Is part of iwlwifi
708 * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
709 * iwl4965_bg_ <-- Called from work queue context
710 * iwl4965_mac_ <-- mac80211 callback
712 ****************************************************************************/
713 extern void iwl_update_chain_flags(struct iwl_priv *priv);
714 extern int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
715 extern const u8 iwl_bcast_addr[ETH_ALEN];
716 extern int iwl_rxq_stop(struct iwl_priv *priv);
717 extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
718 extern int iwl_queue_space(const struct iwl_queue *q);
719 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
721 return q->write_ptr >= q->read_ptr ?
722 (i >= q->read_ptr && i < q->write_ptr) :
723 !(i < q->read_ptr && i >= q->write_ptr);
727 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
730 * This is for init calibration result and scan command which
731 * required buffer > TFD_MAX_PAYLOAD_SIZE,
732 * the big buffer at end of command array
735 return q->n_window; /* must be power of 2 */
737 /* Otherwise, use normal size buffers */
738 return index & (q->n_window - 1);
748 #define IWL_OPERATION_MODE_AUTO 0
749 #define IWL_OPERATION_MODE_HT_ONLY 1
750 #define IWL_OPERATION_MODE_MIXED 2
751 #define IWL_OPERATION_MODE_20MHZ 3
753 #define IWL_TX_CRC_SIZE 4
754 #define IWL_TX_DELIMITER_SIZE 4
756 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
758 /* Sensitivity and chain noise calibration */
759 #define INITIALIZATION_VALUE 0xFFFF
760 #define IWL4965_CAL_NUM_BEACONS 20
761 #define IWL_CAL_NUM_BEACONS 16
762 #define MAXIMUM_ALLOWED_PATHLOSS 15
764 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
766 #define MAX_FA_OFDM 50
767 #define MIN_FA_OFDM 5
768 #define MAX_FA_CCK 50
771 #define AUTO_CORR_STEP_OFDM 1
773 #define AUTO_CORR_STEP_CCK 3
774 #define AUTO_CORR_MAX_TH_CCK 160
777 #define NRG_STEP_CCK 2
779 #define MAX_NUMBER_CCK_NO_FA 100
781 #define AUTO_CORR_CCK_MIN_VAL_DEF (125)
786 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
787 #define ALL_BAND_FILTER 0xFF00
788 #define IN_BAND_FILTER 0xFF
789 #define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF
791 #define NRG_NUM_PREV_STAT_L 20
792 #define NUM_RX_CHAINS 3
794 enum iwl4965_false_alarm_state {
797 IWL_FA_GOOD_RANGE = 2,
800 enum iwl4965_chain_noise_state {
801 IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
802 IWL_CHAIN_NOISE_ACCUMULATE,
803 IWL_CHAIN_NOISE_CALIBRATED,
804 IWL_CHAIN_NOISE_DONE,
807 enum iwl4965_calib_enabled_state {
808 IWL_CALIB_DISABLED = 0, /* must be 0 */
809 IWL_CALIB_ENABLED = 1,
815 * defines the order in which results of initial calibrations
816 * should be sent to the runtime uCode
823 IWL_CALIB_TX_IQ_PERD,
828 /* Opaque calibration results */
829 struct iwl_calib_result {
840 /* Sensitivity calib data */
841 struct iwl_sensitivity_data {
843 u32 auto_corr_ofdm_mrc;
844 u32 auto_corr_ofdm_x1;
845 u32 auto_corr_ofdm_mrc_x1;
847 u32 auto_corr_cck_mrc;
849 u32 last_bad_plcp_cnt_ofdm;
850 u32 last_fa_cnt_ofdm;
851 u32 last_bad_plcp_cnt_cck;
857 u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
862 s32 nrg_auto_corr_silence_diff;
863 u32 num_in_cck_no_fa;
866 u16 barker_corr_th_min;
867 u16 barker_corr_th_min_mrc;
871 /* Chain noise (differential Rx gain) calib data */
872 struct iwl_chain_noise_data {
881 u8 disconn_array[NUM_RX_CHAINS];
882 u8 delta_gain_code[NUM_RX_CHAINS];
887 #define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
888 #define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
890 #define IWL_TRAFFIC_ENTRIES (256)
891 #define IWL_TRAFFIC_ENTRY_SIZE (64)
894 MEASUREMENT_READY = (1 << 0),
895 MEASUREMENT_ACTIVE = (1 << 1),
899 NVM_DEVICE_TYPE_EEPROM = 0,
904 * Two types of OTP memory access modes
905 * IWL_OTP_ACCESS_ABSOLUTE - absolute address mode,
906 * based on physical memory addressing
907 * IWL_OTP_ACCESS_RELATIVE - relative address mode,
908 * based on logical memory addressing
910 enum iwl_access_mode {
911 IWL_OTP_ACCESS_ABSOLUTE,
912 IWL_OTP_ACCESS_RELATIVE,
916 * enum iwl_pa_type - Power Amplifier type
917 * @IWL_PA_SYSTEM: based on uCode configuration
918 * @IWL_PA_INTERNAL: use Internal only
925 /* interrupt statistics */
926 struct isr_statistics {
936 u32 rx_handlers[REPLY_MAX];
941 #ifdef CONFIG_IWLWIFI_DEBUGFS
942 /* management statistics */
943 enum iwl_mgmt_stats {
944 MANAGEMENT_ASSOC_REQ = 0,
945 MANAGEMENT_ASSOC_RESP,
946 MANAGEMENT_REASSOC_REQ,
947 MANAGEMENT_REASSOC_RESP,
948 MANAGEMENT_PROBE_REQ,
949 MANAGEMENT_PROBE_RESP,
958 /* control statistics */
959 enum iwl_ctrl_stats {
960 CONTROL_BACK_REQ = 0,
971 struct traffic_stats {
972 u32 mgmt[MANAGEMENT_MAX];
973 u32 ctrl[CONTROL_MAX];
978 struct traffic_stats {
984 * iwl_switch_rxon: "channel switch" structure
986 * @ switch_in_progress: channel switch in progress
987 * @ channel: new channel
989 struct iwl_switch_rxon {
990 bool switch_in_progress;
995 * schedule the timer to wake up every UCODE_TRACE_PERIOD milliseconds
996 * to perform continuous uCode event logging operation if enabled
998 #define UCODE_TRACE_PERIOD (100)
1001 * iwl_event_log: current uCode event log position
1003 * @ucode_trace: enable/disable ucode continuous trace timer
1004 * @num_wraps: how many times the event buffer wraps
1005 * @next_entry: the entry just before the next one that uCode would fill
1006 * @non_wraps_count: counter for no wrap detected when dump ucode events
1007 * @wraps_once_count: counter for wrap once detected when dump ucode events
1008 * @wraps_more_count: counter for wrap more than once detected
1009 * when dump ucode events
1011 struct iwl_event_log {
1015 int non_wraps_count;
1016 int wraps_once_count;
1017 int wraps_more_count;
1021 * host interrupt timeout value
1022 * used with setting interrupt coalescing timer
1023 * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit
1025 * default interrupt coalescing timer is 64 x 32 = 2048 usecs
1026 * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs
1028 #define IWL_HOST_INT_TIMEOUT_MAX (0xFF)
1029 #define IWL_HOST_INT_TIMEOUT_DEF (0x40)
1030 #define IWL_HOST_INT_TIMEOUT_MIN (0x0)
1031 #define IWL_HOST_INT_CALIB_TIMEOUT_MAX (0xFF)
1032 #define IWL_HOST_INT_CALIB_TIMEOUT_DEF (0x10)
1033 #define IWL_HOST_INT_CALIB_TIMEOUT_MIN (0x0)
1036 * This is the threshold value of plcp error rate per 100mSecs. It is
1037 * used to set and check for the validity of plcp_delta.
1039 #define IWL_MAX_PLCP_ERR_THRESHOLD_MIN (0)
1040 #define IWL_MAX_PLCP_ERR_THRESHOLD_DEF (50)
1041 #define IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF (100)
1042 #define IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF (200)
1043 #define IWL_MAX_PLCP_ERR_THRESHOLD_MAX (255)
1045 #define IWL_DELAY_NEXT_FORCE_RF_RESET (HZ*3)
1046 #define IWL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5)
1048 /* timer constants use to monitor and recover stuck tx queues in mSecs */
1049 #define IWL_MONITORING_PERIOD (1000)
1050 #define IWL_ONE_HUNDRED_MSECS (100)
1051 #define IWL_SIXTY_SECS (60000)
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 31:24 - extended
1071 * bits 23:0 - interval
1073 #define IWL3945_EXT_BEACON_TIME_POS 24
1076 * bits 31:22 - extended
1077 * bits 21:0 - interval
1079 #define IWLAGN_EXT_BEACON_TIME_POS 22
1083 /* ieee device used by generic ieee processing code */
1084 struct ieee80211_hw *hw;
1085 struct ieee80211_channel *ieee_channels;
1086 struct ieee80211_rate *ieee_rates;
1087 struct iwl_cfg *cfg;
1089 /* temporary frame storage list */
1090 struct list_head free_frames;
1093 enum ieee80211_band band;
1096 void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
1097 struct iwl_rx_mem_buffer *rxb);
1099 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
1101 /* spectrum measurement report caching */
1102 struct iwl_spectrum_notification measure_report;
1103 u8 measurement_status;
1105 /* ucode beacon time */
1106 u32 ucode_beacon_time;
1107 int missed_beacon_threshold;
1109 /* storing the jiffies when the plcp error rate is received */
1110 unsigned long plcp_jiffies;
1113 struct iwl_force_reset force_reset[IWL_MAX_FORCE_RESET];
1115 /* we allocate array of iwl_channel_info for NIC's valid channels.
1116 * Access via channel # using indirect index array */
1117 struct iwl_channel_info *channel_info; /* channel info array */
1118 u8 channel_count; /* # of channels */
1120 /* thermal calibration */
1121 s32 temperature; /* degrees Kelvin */
1122 s32 last_temperature;
1124 /* init calibration results */
1125 struct iwl_calib_result calib_results[IWL_CALIB_MAX];
1127 /* Scan related variables */
1128 unsigned long scan_start;
1129 unsigned long scan_start_tsf;
1131 enum ieee80211_band scan_band;
1132 struct cfg80211_scan_request *scan_request;
1133 struct ieee80211_vif *scan_vif;
1134 bool is_internal_short_scan;
1135 u8 scan_tx_ant[IEEE80211_NUM_BANDS];
1139 spinlock_t lock; /* protect general shared data */
1140 spinlock_t hcmd_lock; /* protect hcmd */
1141 spinlock_t reg_lock; /* protect hw register access */
1143 struct mutex sync_cmd_mutex; /* enable serialization of sync commands */
1145 /* basic pci-network driver stuff */
1146 struct pci_dev *pci_dev;
1148 /* pci hardware address support */
1149 void __iomem *hw_base;
1154 /* uCode images, save to reload in case of failure */
1155 int fw_index; /* firmware we're trying to load */
1156 u32 ucode_ver; /* version of ucode, copy of
1158 struct fw_desc ucode_code; /* runtime inst */
1159 struct fw_desc ucode_data; /* runtime data original */
1160 struct fw_desc ucode_data_backup; /* runtime data save/restore */
1161 struct fw_desc ucode_init; /* initialization inst */
1162 struct fw_desc ucode_init_data; /* initialization data */
1163 struct fw_desc ucode_boot; /* bootstrap inst */
1164 enum ucode_type ucode_type;
1165 u8 ucode_write_complete; /* the image write is complete */
1166 char firmware_name[25];
1169 struct iwl_rxon_time_cmd rxon_timing;
1171 /* We declare this const so it can only be
1172 * changed via explicit cast within the
1173 * routines that actually update the physical
1175 const struct iwl_rxon_cmd active_rxon;
1176 struct iwl_rxon_cmd staging_rxon;
1178 struct iwl_switch_rxon switch_rxon;
1180 /* 1st responses from initialize and runtime uCode images.
1181 * _agn's initialize alive response contains some calibration data. */
1182 struct iwl_init_alive_resp card_alive_init;
1183 struct iwl_alive_resp card_alive;
1185 unsigned long last_blink_time;
1193 struct iwl_sensitivity_data sensitivity_data;
1194 struct iwl_chain_noise_data chain_noise_data;
1195 __le16 sensitivity_tbl[HD_TABLE_SIZE];
1197 struct iwl_ht_config current_ht_config;
1199 /* Rate scaling data */
1202 wait_queue_head_t wait_command_queue;
1204 int activity_timer_active;
1206 /* Rx and Tx DMA processing queues */
1207 struct iwl_rx_queue rxq;
1208 struct iwl_tx_queue *txq;
1209 unsigned long txq_ctx_active_msk;
1210 struct iwl_dma_ptr kw; /* keep warm address */
1211 struct iwl_dma_ptr scd_bc_tbls;
1213 u32 scd_base_addr; /* scheduler sram base address */
1215 unsigned long status;
1217 /* counts mgmt, ctl, and data packets */
1218 struct traffic_stats tx_stats;
1219 struct traffic_stats rx_stats;
1221 /* counts interrupts */
1222 struct isr_statistics isr_stats;
1224 struct iwl_power_mgr power_data;
1225 struct iwl_tt_mgmt thermal_throttle;
1227 struct iwl_notif_statistics statistics;
1228 #ifdef CONFIG_IWLWIFI_DEBUG
1229 struct iwl_notif_statistics accum_statistics;
1230 struct iwl_notif_statistics delta_statistics;
1231 struct iwl_notif_statistics max_delta;
1234 /* context information */
1235 u8 bssid[ETH_ALEN]; /* used only on 3945 but filled by core */
1237 /* station table variables */
1239 /* Note: if lock and sta_lock are needed, lock must be acquired first */
1240 spinlock_t sta_lock;
1242 struct iwl_station_entry stations[IWL_STATION_COUNT];
1243 struct iwl_wep_key wep_keys[WEP_KEYS_MAX]; /* protected by mutex */
1245 unsigned long ucode_key_table;
1247 /* queue refcounts */
1248 #define IWL_MAX_HW_QUEUES 32
1249 unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
1251 atomic_t queue_stop_count[4];
1253 /* Indication if ieee80211_ops->open has been called */
1256 u8 mac80211_registered;
1258 /* eeprom -- this is in the card's little endian byte order */
1260 int nvm_device_type;
1261 struct iwl_eeprom_calib_info *calib_info;
1263 enum nl80211_iftype iw_mode;
1265 struct sk_buff *ibss_beacon;
1267 /* Last Rx'd beacon timestamp */
1269 struct ieee80211_vif *vif;
1272 #if defined(CONFIG_IWL3945) || defined(CONFIG_IWL3945_MODULE)
1275 dma_addr_t shared_phys;
1277 struct delayed_work thermal_periodic;
1278 struct delayed_work rfkill_poll;
1280 struct iwl3945_notif_statistics statistics;
1281 #ifdef CONFIG_IWLWIFI_DEBUGFS
1282 struct iwl3945_notif_statistics accum_statistics;
1283 struct iwl3945_notif_statistics delta_statistics;
1284 struct iwl3945_notif_statistics max_delta;
1288 int last_rx_rssi; /* From Rx packet statistics */
1290 /* Rx'd packet timing information */
1291 u32 last_beacon_time;
1295 * each calibration channel group in the
1296 * EEPROM has a derived clip setting for
1299 const struct iwl3945_clip_group clip_groups[5];
1303 #if defined(CONFIG_IWLAGN) || defined(CONFIG_IWLAGN_MODULE)
1308 dma_addr_t ict_tbl_dma;
1309 dma_addr_t aligned_ict_tbl_dma;
1314 * reporting the number of tids has AGG on. 0 means
1319 struct iwl_rx_phy_res last_phy_res;
1320 bool last_phy_res_valid;
1322 struct completion firmware_loading_complete;
1324 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1325 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1330 struct iwl_hw_params hw_params;
1334 struct iwl_qos_info qos_data;
1336 struct workqueue_struct *workqueue;
1338 struct work_struct restart;
1339 struct work_struct scan_completed;
1340 struct work_struct rx_replenish;
1341 struct work_struct abort_scan;
1342 struct work_struct beacon_update;
1343 struct work_struct tt_work;
1344 struct work_struct ct_enter;
1345 struct work_struct ct_exit;
1346 struct work_struct start_internal_scan;
1348 struct tasklet_struct irq_tasklet;
1350 struct delayed_work init_alive_start;
1351 struct delayed_work alive_start;
1352 struct delayed_work scan_check;
1355 s8 tx_power_user_lmt;
1356 s8 tx_power_device_lmt;
1357 s8 tx_power_lmt_in_half_dbm; /* max tx power in half-dBm format */
1360 #ifdef CONFIG_IWLWIFI_DEBUG
1361 /* debugging info */
1362 u32 debug_level; /* per device debugging will override global
1363 iwl_debug_level if set */
1364 #endif /* CONFIG_IWLWIFI_DEBUG */
1365 #ifdef CONFIG_IWLWIFI_DEBUGFS
1371 struct dentry *debugfs_dir;
1372 u32 dbgfs_sram_offset, dbgfs_sram_len;
1374 #endif /* CONFIG_IWLWIFI_DEBUGFS */
1376 struct work_struct txpower_work;
1377 u32 disable_sens_cal;
1378 u32 disable_chain_noise_cal;
1379 u32 disable_tx_power_cal;
1380 struct work_struct run_time_calib_work;
1381 struct timer_list statistics_periodic;
1382 struct timer_list ucode_trace;
1383 struct timer_list monitor_recover;
1386 struct iwl_event_log event_log;
1389 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
1391 set_bit(txq_id, &priv->txq_ctx_active_msk);
1394 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
1396 clear_bit(txq_id, &priv->txq_ctx_active_msk);
1399 #ifdef CONFIG_IWLWIFI_DEBUG
1400 const char *iwl_get_tx_fail_reason(u32 status);
1402 * iwl_get_debug_level: Return active debug level for device
1404 * Using sysfs it is possible to set per device debug level. This debug
1405 * level will be used if set, otherwise the global debug level which can be
1406 * set via module parameter is used.
1408 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1410 if (priv->debug_level)
1411 return priv->debug_level;
1413 return iwl_debug_level;
1416 static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
1418 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1420 return iwl_debug_level;
1425 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1426 int txq_id, int idx)
1428 if (priv->txq[txq_id].txb[idx].skb)
1429 return (struct ieee80211_hdr *)priv->txq[txq_id].
1435 static inline int iwl_is_associated(struct iwl_priv *priv)
1437 return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1440 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1442 if (ch_info == NULL)
1444 return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1447 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1449 return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1452 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1454 return ch_info->band == IEEE80211_BAND_5GHZ;
1457 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1459 return ch_info->band == IEEE80211_BAND_2GHZ;
1462 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1464 return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1467 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1469 return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1472 static inline void __iwl_free_pages(struct iwl_priv *priv, struct page *page)
1474 __free_pages(page, priv->hw_params.rx_page_order);
1475 priv->alloc_rxb_page--;
1478 static inline void iwl_free_pages(struct iwl_priv *priv, unsigned long page)
1480 free_pages(page, priv->hw_params.rx_page_order);
1481 priv->alloc_rxb_page--;
1483 #endif /* __iwl_dev_h__ */