1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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"
47 #include "iwl-power.h"
48 #include "iwl-agn-rs.h"
50 /* configuration for the iwl4965 */
51 extern struct iwl_cfg iwl4965_agn_cfg;
52 extern struct iwl_cfg iwl5300_agn_cfg;
53 extern struct iwl_cfg iwl5100_agn_cfg;
54 extern struct iwl_cfg iwl5350_agn_cfg;
55 extern struct iwl_cfg iwl5100_bg_cfg;
56 extern struct iwl_cfg iwl5100_abg_cfg;
57 extern struct iwl_cfg iwl5150_agn_cfg;
58 extern struct iwl_cfg iwl6000i_2agn_cfg;
59 extern struct iwl_cfg iwl6000i_2abg_cfg;
60 extern struct iwl_cfg iwl6000i_2bg_cfg;
61 extern struct iwl_cfg iwl6000_3agn_cfg;
62 extern struct iwl_cfg iwl6050_2agn_cfg;
63 extern struct iwl_cfg iwl6050_2abg_cfg;
64 extern struct iwl_cfg iwl1000_bgn_cfg;
65 extern struct iwl_cfg iwl1000_bg_cfg;
69 /* shared structures from iwl-5000.c */
70 extern struct iwl_mod_params iwl50_mod_params;
71 extern struct iwl_ucode_ops iwl5000_ucode;
72 extern struct iwl_lib_ops iwl5000_lib;
73 extern struct iwl_hcmd_ops iwl5000_hcmd;
74 extern struct iwl_hcmd_utils_ops iwl5000_hcmd_utils;
76 /* shared functions from iwl-5000.c */
77 extern u16 iwl5000_get_hcmd_size(u8 cmd_id, u16 len);
78 extern u16 iwl5000_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd,
80 extern void iwl5000_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
82 extern int iwl5000_calc_rssi(struct iwl_priv *priv,
83 struct iwl_rx_phy_res *rx_resp);
84 extern void iwl5000_nic_config(struct iwl_priv *priv);
85 extern u16 iwl5000_eeprom_calib_version(struct iwl_priv *priv);
86 extern const u8 *iwl5000_eeprom_query_addr(const struct iwl_priv *priv,
88 extern void iwl5000_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
89 struct iwl_tx_queue *txq,
91 extern void iwl5000_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
92 struct iwl_tx_queue *txq);
93 extern int iwl5000_load_ucode(struct iwl_priv *priv);
94 extern void iwl5000_init_alive_start(struct iwl_priv *priv);
95 extern int iwl5000_alive_notify(struct iwl_priv *priv);
96 extern int iwl5000_hw_set_hw_params(struct iwl_priv *priv);
97 extern int iwl5000_txq_agg_enable(struct iwl_priv *priv, int txq_id,
98 int tx_fifo, int sta_id, int tid, u16 ssn_idx);
99 extern int iwl5000_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
100 u16 ssn_idx, u8 tx_fifo);
101 extern void iwl5000_txq_set_sched(struct iwl_priv *priv, u32 mask);
102 extern void iwl5000_setup_deferred_work(struct iwl_priv *priv);
103 extern void iwl5000_rx_handler_setup(struct iwl_priv *priv);
104 extern int iwl5000_hw_valid_rtc_data_addr(u32 addr);
105 extern int iwl5000_send_tx_power(struct iwl_priv *priv);
106 extern void iwl5000_temperature(struct iwl_priv *priv);
108 /* CT-KILL constants */
109 #define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */
110 #define CT_KILL_THRESHOLD 114 /* in Celsius */
111 #define CT_KILL_EXIT_THRESHOLD 95 /* in Celsius */
113 /* Default noise level to report when noise measurement is not available.
114 * This may be because we're:
115 * 1) Not associated (4965, no beacon statistics being sent to driver)
116 * 2) Scanning (noise measurement does not apply to associated channel)
117 * 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
118 * Use default noise value of -127 ... this is below the range of measurable
119 * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
120 * Also, -127 works better than 0 when averaging frames with/without
121 * noise info (e.g. averaging might be done in app); measured dBm values are
122 * always negative ... using a negative value as the default keeps all
123 * averages within an s8's (used in some apps) range of negative values. */
124 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
127 * RTS threshold here is total size [2347] minus 4 FCS bytes
129 * a value of 0 means RTS on all data/management packets
130 * a value > max MSDU size means no RTS
131 * else RTS for data/management frames where MPDU is larger
134 #define DEFAULT_RTS_THRESHOLD 2347U
135 #define MIN_RTS_THRESHOLD 0U
136 #define MAX_RTS_THRESHOLD 2347U
137 #define MAX_MSDU_SIZE 2304U
138 #define MAX_MPDU_SIZE 2346U
139 #define DEFAULT_BEACON_INTERVAL 100U
140 #define DEFAULT_SHORT_RETRY_LIMIT 7U
141 #define DEFAULT_LONG_RETRY_LIMIT 4U
143 struct iwl_rx_mem_buffer {
146 struct list_head list;
149 #define rxb_addr(r) page_address(r->page)
152 struct iwl_device_cmd;
154 struct iwl_cmd_meta {
155 /* only for SYNC commands, iff the reply skb is wanted */
156 struct iwl_host_cmd *source;
158 * only for ASYNC commands
159 * (which is somewhat stupid -- look at iwl-sta.c for instance
160 * which duplicates a bunch of code because the callback isn't
161 * invoked for SYNC commands, if it were and its result passed
162 * through it would be simpler...)
164 void (*callback)(struct iwl_priv *priv,
165 struct iwl_device_cmd *cmd,
166 struct iwl_rx_packet *pkt);
168 /* The CMD_SIZE_HUGE flag bit indicates that the command
169 * structure is stored at the end of the shared queue memory. */
172 DECLARE_PCI_UNMAP_ADDR(mapping)
173 DECLARE_PCI_UNMAP_LEN(len)
177 * Generic queue structure
179 * Contains common data for Rx and Tx queues
182 int n_bd; /* number of BDs in this queue */
183 int write_ptr; /* 1-st empty entry (index) host_w*/
184 int read_ptr; /* last used entry (index) host_r*/
185 dma_addr_t dma_addr; /* physical addr for BD's */
186 int n_window; /* safe queue window */
188 int low_mark; /* low watermark, resume queue if free
189 * space more than this */
190 int high_mark; /* high watermark, stop queue if free
191 * space less than this */
192 } __attribute__ ((packed));
194 /* One for each TFD */
196 struct sk_buff *skb[IWL_NUM_OF_TBS - 1];
200 * struct iwl_tx_queue - Tx Queue for DMA
201 * @q: generic Rx/Tx queue descriptor
202 * @bd: base of circular buffer of TFDs
203 * @cmd: array of command/TX buffer pointers
204 * @meta: array of meta data for each command/tx buffer
205 * @dma_addr_cmd: physical address of cmd/tx buffer array
206 * @txb: array of per-TFD driver data
207 * @need_update: indicates need to update read/write index
208 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
210 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
211 * descriptors) and required locking structures.
213 #define TFD_TX_CMD_SLOTS 256
214 #define TFD_CMD_SLOTS 32
216 struct iwl_tx_queue {
219 struct iwl_device_cmd **cmd;
220 struct iwl_cmd_meta *meta;
221 struct iwl_tx_info *txb;
228 #define IWL_NUM_SCAN_RATES (2)
230 struct iwl4965_channel_tgd_info {
235 struct iwl4965_channel_tgh_info {
239 #define IWL4965_MAX_RATE (33)
241 struct iwl3945_clip_group {
242 /* maximum power level to prevent clipping for each rate, derived by
243 * us from this band's saturation power in EEPROM */
244 const s8 clip_powers[IWL_MAX_RATES];
247 /* current Tx power values to use, one for each rate for each channel.
248 * requested power is limited by:
249 * -- regulatory EEPROM limits for this channel
250 * -- hardware capabilities (clip-powers)
251 * -- spectrum management
252 * -- user preference (e.g. iwconfig)
253 * when requested power is set, base power index must also be set. */
254 struct iwl3945_channel_power_info {
255 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
256 s8 power_table_index; /* actual (compenst'd) index into gain table */
257 s8 base_power_index; /* gain index for power at factory temp. */
258 s8 requested_power; /* power (dBm) requested for this chnl/rate */
261 /* current scan Tx power values to use, one for each scan rate for each
263 struct iwl3945_scan_power_info {
264 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
265 s8 power_table_index; /* actual (compenst'd) index into gain table */
266 s8 requested_power; /* scan pwr (dBm) requested for chnl/rate */
270 * One for each channel, holds all channel setup data
271 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
274 struct iwl_channel_info {
275 struct iwl4965_channel_tgd_info tgd;
276 struct iwl4965_channel_tgh_info tgh;
277 struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */
278 struct iwl_eeprom_channel ht40_eeprom; /* EEPROM regulatory limit for
281 u8 channel; /* channel number */
282 u8 flags; /* flags copied from EEPROM */
283 s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
284 s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
285 s8 min_power; /* always 0 */
286 s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
288 u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */
289 u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */
290 enum ieee80211_band band;
292 /* HT40 channel info */
293 s8 ht40_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
294 u8 ht40_flags; /* flags copied from EEPROM */
295 u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */
297 /* Radio/DSP gain settings for each "normal" data Tx rate.
298 * These include, in addition to RF and DSP gain, a few fields for
299 * remembering/modifying gain settings (indexes). */
300 struct iwl3945_channel_power_info power_info[IWL4965_MAX_RATE];
302 /* Radio/DSP gain settings for each scan rate, for directed scans. */
303 struct iwl3945_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
306 #define IWL_TX_FIFO_AC0 0
307 #define IWL_TX_FIFO_AC1 1
308 #define IWL_TX_FIFO_AC2 2
309 #define IWL_TX_FIFO_AC3 3
310 #define IWL_TX_FIFO_HCCA_1 5
311 #define IWL_TX_FIFO_HCCA_2 6
312 #define IWL_TX_FIFO_NONE 7
314 /* Minimum number of queues. MAX_NUM is defined in hw specific files.
315 * Set the minimum to accommodate the 4 standard TX queues, 1 command
316 * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
317 #define IWL_MIN_NUM_QUEUES 10
320 * Queue #4 is the command queue for 3945/4965/5x00/1000/6x00,
321 * the driver maps it into the appropriate device FIFO for the
324 #define IWL_CMD_QUEUE_NUM 4
326 /* Power management (not Tx power) structures */
333 #define IEEE80211_DATA_LEN 2304
334 #define IEEE80211_4ADDR_LEN 30
335 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
336 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
340 struct ieee80211_hdr frame;
341 struct iwl_tx_beacon_cmd beacon;
342 u8 raw[IEEE80211_FRAME_LEN];
345 struct list_head list;
348 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
349 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
350 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
356 CMD_SIZE_HUGE = (1 << 0),
357 CMD_ASYNC = (1 << 1),
358 CMD_WANT_SKB = (1 << 2),
361 #define DEF_CMD_PAYLOAD_SIZE 320
364 * IWL_LINK_HDR_MAX should include ieee80211_hdr, radiotap header,
365 * SNAP header and alignment. It should also be big enough for 802.11
368 #define IWL_LINK_HDR_MAX 64
371 * struct iwl_device_cmd
373 * For allocation of the command and tx queues, this establishes the overall
374 * size of the largest command we send to uCode, except for a scan command
375 * (which is relatively huge; space is allocated separately).
377 struct iwl_device_cmd {
378 struct iwl_cmd_header hdr; /* uCode API */
384 struct iwl_tx_cmd tx;
385 struct iwl6000_channel_switch_cmd chswitch;
386 u8 payload[DEF_CMD_PAYLOAD_SIZE];
387 } __attribute__ ((packed)) cmd;
388 } __attribute__ ((packed));
390 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
393 struct iwl_host_cmd {
395 unsigned long reply_page;
396 void (*callback)(struct iwl_priv *priv,
397 struct iwl_device_cmd *cmd,
398 struct iwl_rx_packet *pkt);
404 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
405 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
406 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
409 * struct iwl_rx_queue - Rx queue
410 * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
411 * @dma_addr: bus address of buffer of receive buffer descriptors (rbd)
412 * @read: Shared index to newest available Rx buffer
413 * @write: Shared index to oldest written Rx packet
414 * @free_count: Number of pre-allocated buffers in rx_free
415 * @rx_free: list of free SKBs for use
416 * @rx_used: List of Rx buffers with no SKB
417 * @need_update: flag to indicate we need to update read/write index
418 * @rb_stts: driver's pointer to receive buffer status
419 * @rb_stts_dma: bus address of receive buffer status
421 * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
423 struct iwl_rx_queue {
426 struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
427 struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
432 struct list_head rx_free;
433 struct list_head rx_used;
435 struct iwl_rb_status *rb_stts;
436 dma_addr_t rb_stts_dma;
440 #define IWL_SUPPORTED_RATES_IE_LEN 8
442 #define MAX_TID_COUNT 9
444 #define IWL_INVALID_RATE 0xFF
445 #define IWL_INVALID_VALUE -1
448 * struct iwl_ht_agg -- aggregation status while waiting for block-ack
449 * @txq_id: Tx queue used for Tx attempt
450 * @frame_count: # frames attempted by Tx command
451 * @wait_for_ba: Expect block-ack before next Tx reply
452 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
453 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
454 * @bitmap1: High order, one bit for each frame pending ACK in Tx window
455 * @rate_n_flags: Rate at which Tx was attempted
457 * If REPLY_TX indicates that aggregation was attempted, driver must wait
458 * for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
459 * until block ack arrives.
468 #define IWL_AGG_OFF 0
470 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
471 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
476 struct iwl_tid_data {
479 struct iwl_ht_agg agg;
483 enum ieee80211_key_alg alg;
489 union iwl_ht_rate_supp {
497 #define CFG_HT_RX_AMPDU_FACTOR_DEF (0x3)
500 * Maximal MPDU density for TX aggregation
506 #define CFG_HT_MPDU_DENSITY_4USEC (0x5)
507 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC
509 struct iwl_ht_config {
510 /* self configuration data */
513 bool single_chain_sufficient;
514 /* BSS related data */
515 u8 extension_chan_offset;
517 u8 non_GF_STA_present;
520 union iwl_qos_capabity {
522 u8 edca_count:4; /* bit 0-3 */
523 u8 q_ack:1; /* bit 4 */
524 u8 queue_request:1; /* bit 5 */
525 u8 txop_request:1; /* bit 6 */
526 u8 reserved:1; /* bit 7 */
529 u8 acvo_APSD:1; /* bit 0 */
530 u8 acvi_APSD:1; /* bit 1 */
531 u8 ac_bk_APSD:1; /* bit 2 */
532 u8 ac_be_APSD:1; /* bit 3 */
533 u8 q_ack:1; /* bit 4 */
534 u8 max_len:2; /* bit 5-6 */
535 u8 more_data_ack:1; /* bit 7 */
541 struct iwl_qos_info {
543 union iwl_qos_capabity qos_cap;
544 struct iwl_qosparam_cmd def_qos_parm;
547 struct iwl_station_entry {
548 struct iwl_addsta_cmd sta;
549 struct iwl_tid_data tid[MAX_TID_COUNT];
551 struct iwl_hw_key keyinfo;
555 * iwl_station_priv: Driver's private station information
557 * When mac80211 creates a station it reserves some space (hw->sta_data_size)
558 * in the structure for use by driver. This structure is places in that
561 struct iwl_station_priv {
562 struct iwl_lq_sta lq_sta;
563 atomic_t pending_frames;
568 /* one for each uCode image (inst/data, boot/init/runtime) */
570 void *v_addr; /* access by driver */
571 dma_addr_t p_addr; /* access by card's busmaster DMA */
575 /* uCode file layout */
576 struct iwl_ucode_header {
577 __le32 ver; /* major/minor/API/serial */
580 __le32 inst_size; /* bytes of runtime code */
581 __le32 data_size; /* bytes of runtime data */
582 __le32 init_size; /* bytes of init code */
583 __le32 init_data_size; /* bytes of init data */
584 __le32 boot_size; /* bytes of bootstrap code */
585 u8 data[0]; /* in same order as sizes */
588 __le32 build; /* build number */
589 __le32 inst_size; /* bytes of runtime code */
590 __le32 data_size; /* bytes of runtime data */
591 __le32 init_size; /* bytes of init code */
592 __le32 init_data_size; /* bytes of init data */
593 __le32 boot_size; /* bytes of bootstrap code */
594 u8 data[0]; /* in same order as sizes */
598 #define UCODE_HEADER_SIZE(ver) ((ver) == 1 ? 24 : 28)
600 struct iwl4965_ibss_seq {
604 unsigned long packet_time;
605 struct list_head list;
608 struct iwl_sensitivity_ranges {
615 u16 auto_corr_min_ofdm;
616 u16 auto_corr_min_ofdm_mrc;
617 u16 auto_corr_min_ofdm_x1;
618 u16 auto_corr_min_ofdm_mrc_x1;
620 u16 auto_corr_max_ofdm;
621 u16 auto_corr_max_ofdm_mrc;
622 u16 auto_corr_max_ofdm_x1;
623 u16 auto_corr_max_ofdm_mrc_x1;
625 u16 auto_corr_max_cck;
626 u16 auto_corr_max_cck_mrc;
627 u16 auto_corr_min_cck;
628 u16 auto_corr_min_cck_mrc;
630 u16 barker_corr_th_min;
631 u16 barker_corr_th_min_mrc;
636 #define KELVIN_TO_CELSIUS(x) ((x)-273)
637 #define CELSIUS_TO_KELVIN(x) ((x)+273)
641 * struct iwl_hw_params
642 * @max_txq_num: Max # Tx queues supported
643 * @dma_chnl_num: Number of Tx DMA/FIFO channels
644 * @scd_bc_tbls_size: size of scheduler byte count tables
645 * @tfd_size: TFD size
646 * @tx/rx_chains_num: Number of TX/RX chains
647 * @valid_tx/rx_ant: usable antennas
648 * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
649 * @max_rxq_log: Log-base-2 of max_rxq_size
650 * @rx_page_order: Rx buffer page order
651 * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
654 * @ht40_channel: is 40MHz width possible in band 2.4
655 * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
656 * @sw_crypto: 0 for hw, 1 for sw
657 * @max_xxx_size: for ucode uses
658 * @ct_kill_threshold: temperature threshold
659 * @calib_init_cfg: setup initial calibrations for the hw
660 * @struct iwl_sensitivity_ranges: range of sensitivity values
662 struct iwl_hw_params {
665 u16 scd_bc_tbls_size;
678 u8 max_beacon_itrvl; /* in 1024 ms */
682 u32 ct_kill_threshold; /* value in hw-dependent units */
683 u32 ct_kill_exit_threshold; /* value in hw-dependent units */
684 /* for 1000, 6000 series and up */
686 const struct iwl_sensitivity_ranges *sens;
690 /******************************************************************************
692 * Functions implemented in core module which are forward declared here
693 * for use by iwl-[4-5].c
695 * NOTE: The implementation of these functions are not hardware specific
696 * which is why they are in the core module files.
698 * Naming convention --
699 * iwl_ <-- Is part of iwlwifi
700 * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
701 * iwl4965_bg_ <-- Called from work queue context
702 * iwl4965_mac_ <-- mac80211 callback
704 ****************************************************************************/
705 extern void iwl_update_chain_flags(struct iwl_priv *priv);
706 extern int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
707 extern const u8 iwl_bcast_addr[ETH_ALEN];
708 extern int iwl_rxq_stop(struct iwl_priv *priv);
709 extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
710 extern int iwl_queue_space(const struct iwl_queue *q);
711 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
713 return q->write_ptr > q->read_ptr ?
714 (i >= q->read_ptr && i < q->write_ptr) :
715 !(i < q->read_ptr && i >= q->write_ptr);
719 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
722 * This is for init calibration result and scan command which
723 * required buffer > TFD_MAX_PAYLOAD_SIZE,
724 * the big buffer at end of command array
727 return q->n_window; /* must be power of 2 */
729 /* Otherwise, use normal size buffers */
730 return index & (q->n_window - 1);
740 #define IWL_OPERATION_MODE_AUTO 0
741 #define IWL_OPERATION_MODE_HT_ONLY 1
742 #define IWL_OPERATION_MODE_MIXED 2
743 #define IWL_OPERATION_MODE_20MHZ 3
745 #define IWL_TX_CRC_SIZE 4
746 #define IWL_TX_DELIMITER_SIZE 4
748 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
750 /* Sensitivity and chain noise calibration */
751 #define INITIALIZATION_VALUE 0xFFFF
752 #define IWL4965_CAL_NUM_BEACONS 20
753 #define IWL_CAL_NUM_BEACONS 16
754 #define MAXIMUM_ALLOWED_PATHLOSS 15
756 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
758 #define MAX_FA_OFDM 50
759 #define MIN_FA_OFDM 5
760 #define MAX_FA_CCK 50
763 #define AUTO_CORR_STEP_OFDM 1
765 #define AUTO_CORR_STEP_CCK 3
766 #define AUTO_CORR_MAX_TH_CCK 160
769 #define NRG_STEP_CCK 2
771 #define MAX_NUMBER_CCK_NO_FA 100
773 #define AUTO_CORR_CCK_MIN_VAL_DEF (125)
778 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
779 #define ALL_BAND_FILTER 0xFF00
780 #define IN_BAND_FILTER 0xFF
781 #define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF
783 #define NRG_NUM_PREV_STAT_L 20
784 #define NUM_RX_CHAINS 3
786 enum iwl4965_false_alarm_state {
789 IWL_FA_GOOD_RANGE = 2,
792 enum iwl4965_chain_noise_state {
793 IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
794 IWL_CHAIN_NOISE_ACCUMULATE,
795 IWL_CHAIN_NOISE_CALIBRATED,
796 IWL_CHAIN_NOISE_DONE,
799 enum iwl4965_calib_enabled_state {
800 IWL_CALIB_DISABLED = 0, /* must be 0 */
801 IWL_CALIB_ENABLED = 1,
807 * defines the order in which results of initial calibrations
808 * should be sent to the runtime uCode
815 IWL_CALIB_TX_IQ_PERD,
820 /* Opaque calibration results */
821 struct iwl_calib_result {
832 /* Sensitivity calib data */
833 struct iwl_sensitivity_data {
835 u32 auto_corr_ofdm_mrc;
836 u32 auto_corr_ofdm_x1;
837 u32 auto_corr_ofdm_mrc_x1;
839 u32 auto_corr_cck_mrc;
841 u32 last_bad_plcp_cnt_ofdm;
842 u32 last_fa_cnt_ofdm;
843 u32 last_bad_plcp_cnt_cck;
849 u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
854 s32 nrg_auto_corr_silence_diff;
855 u32 num_in_cck_no_fa;
858 u16 barker_corr_th_min;
859 u16 barker_corr_th_min_mrc;
863 /* Chain noise (differential Rx gain) calib data */
864 struct iwl_chain_noise_data {
873 u8 disconn_array[NUM_RX_CHAINS];
874 u8 delta_gain_code[NUM_RX_CHAINS];
879 #define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
880 #define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
882 #define IWL_TRAFFIC_ENTRIES (256)
883 #define IWL_TRAFFIC_ENTRY_SIZE (64)
886 MEASUREMENT_READY = (1 << 0),
887 MEASUREMENT_ACTIVE = (1 << 1),
891 NVM_DEVICE_TYPE_EEPROM = 0,
896 * Two types of OTP memory access modes
897 * IWL_OTP_ACCESS_ABSOLUTE - absolute address mode,
898 * based on physical memory addressing
899 * IWL_OTP_ACCESS_RELATIVE - relative address mode,
900 * based on logical memory addressing
902 enum iwl_access_mode {
903 IWL_OTP_ACCESS_ABSOLUTE,
904 IWL_OTP_ACCESS_RELATIVE,
908 * enum iwl_pa_type - Power Amplifier type
909 * @IWL_PA_SYSTEM: based on uCode configuration
910 * @IWL_PA_INTERNAL: use Internal only
917 /* interrupt statistics */
918 struct isr_statistics {
928 u32 rx_handlers[REPLY_MAX];
933 #ifdef CONFIG_IWLWIFI_DEBUGFS
934 /* management statistics */
935 enum iwl_mgmt_stats {
936 MANAGEMENT_ASSOC_REQ = 0,
937 MANAGEMENT_ASSOC_RESP,
938 MANAGEMENT_REASSOC_REQ,
939 MANAGEMENT_REASSOC_RESP,
940 MANAGEMENT_PROBE_REQ,
941 MANAGEMENT_PROBE_RESP,
950 /* control statistics */
951 enum iwl_ctrl_stats {
952 CONTROL_BACK_REQ = 0,
963 struct traffic_stats {
964 u32 mgmt[MANAGEMENT_MAX];
965 u32 ctrl[CONTROL_MAX];
970 struct traffic_stats {
976 * iwl_switch_rxon: "channel switch" structure
978 * @ switch_in_progress: channel switch in progress
979 * @ channel: new channel
981 struct iwl_switch_rxon {
982 bool switch_in_progress;
988 /* ieee device used by generic ieee processing code */
989 struct ieee80211_hw *hw;
990 struct ieee80211_channel *ieee_channels;
991 struct ieee80211_rate *ieee_rates;
994 /* temporary frame storage list */
995 struct list_head free_frames;
998 enum ieee80211_band band;
1001 void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
1002 struct iwl_rx_mem_buffer *rxb);
1004 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
1006 #if defined(CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT) || defined(CONFIG_IWL3945_SPECTRUM_MEASUREMENT)
1007 /* spectrum measurement report caching */
1008 struct iwl_spectrum_notification measure_report;
1009 u8 measurement_status;
1011 /* ucode beacon time */
1012 u32 ucode_beacon_time;
1014 /* we allocate array of iwl4965_channel_info for NIC's valid channels.
1015 * Access via channel # using indirect index array */
1016 struct iwl_channel_info *channel_info; /* channel info array */
1017 u8 channel_count; /* # of channels */
1019 /* each calibration channel group in the EEPROM has a derived
1020 * clip setting for each rate. 3945 only.*/
1021 const struct iwl3945_clip_group clip39_groups[5];
1023 /* thermal calibration */
1024 s32 temperature; /* degrees Kelvin */
1025 s32 last_temperature;
1027 /* init calibration results */
1028 struct iwl_calib_result calib_results[IWL_CALIB_MAX];
1030 /* Scan related variables */
1031 unsigned long last_scan_jiffies;
1032 unsigned long next_scan_jiffies;
1033 unsigned long scan_start;
1034 unsigned long scan_pass_start;
1035 unsigned long scan_start_tsf;
1038 struct cfg80211_scan_request *scan_request;
1039 u8 scan_tx_ant[IEEE80211_NUM_BANDS];
1043 spinlock_t lock; /* protect general shared data */
1044 spinlock_t hcmd_lock; /* protect hcmd */
1045 spinlock_t reg_lock; /* protect hw register access */
1048 /* basic pci-network driver stuff */
1049 struct pci_dev *pci_dev;
1051 /* pci hardware address support */
1052 void __iomem *hw_base;
1057 /* uCode images, save to reload in case of failure */
1058 u32 ucode_ver; /* version of ucode, copy of
1060 struct fw_desc ucode_code; /* runtime inst */
1061 struct fw_desc ucode_data; /* runtime data original */
1062 struct fw_desc ucode_data_backup; /* runtime data save/restore */
1063 struct fw_desc ucode_init; /* initialization inst */
1064 struct fw_desc ucode_init_data; /* initialization data */
1065 struct fw_desc ucode_boot; /* bootstrap inst */
1066 enum ucode_type ucode_type;
1067 u8 ucode_write_complete; /* the image write is complete */
1070 struct iwl_rxon_time_cmd rxon_timing;
1072 /* We declare this const so it can only be
1073 * changed via explicit cast within the
1074 * routines that actually update the physical
1076 const struct iwl_rxon_cmd active_rxon;
1077 struct iwl_rxon_cmd staging_rxon;
1079 struct iwl_switch_rxon switch_rxon;
1081 /* 1st responses from initialize and runtime uCode images.
1082 * 4965's initialize alive response contains some calibration data. */
1083 struct iwl_init_alive_resp card_alive_init;
1084 struct iwl_alive_resp card_alive;
1086 unsigned long last_blink_time;
1092 u16 active_rate_basic;
1094 u8 assoc_station_added;
1096 struct iwl_sensitivity_data sensitivity_data;
1097 struct iwl_chain_noise_data chain_noise_data;
1098 __le16 sensitivity_tbl[HD_TABLE_SIZE];
1100 struct iwl_ht_config current_ht_config;
1101 u8 last_phy_res[100];
1103 /* Rate scaling data */
1106 wait_queue_head_t wait_command_queue;
1108 int activity_timer_active;
1110 /* Rx and Tx DMA processing queues */
1111 struct iwl_rx_queue rxq;
1112 struct iwl_tx_queue *txq;
1113 unsigned long txq_ctx_active_msk;
1114 struct iwl_dma_ptr kw; /* keep warm address */
1115 struct iwl_dma_ptr scd_bc_tbls;
1117 u32 scd_base_addr; /* scheduler sram base address */
1119 unsigned long status;
1121 int last_rx_rssi; /* From Rx packet statistics */
1122 int last_rx_noise; /* From beacon statistics */
1124 /* counts mgmt, ctl, and data packets */
1125 struct traffic_stats tx_stats;
1126 struct traffic_stats rx_stats;
1128 /* counts interrupts */
1129 struct isr_statistics isr_stats;
1131 struct iwl_power_mgr power_data;
1132 struct iwl_tt_mgmt thermal_throttle;
1134 struct iwl_notif_statistics statistics;
1135 #ifdef CONFIG_IWLWIFI_DEBUG
1136 struct iwl_notif_statistics accum_statistics;
1139 /* context information */
1144 u8 mac_addr[ETH_ALEN];
1146 /*station table variables */
1147 spinlock_t sta_lock;
1149 struct iwl_station_entry stations[IWL_STATION_COUNT];
1150 struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
1153 unsigned long ucode_key_table;
1155 /* queue refcounts */
1156 #define IWL_MAX_HW_QUEUES 32
1157 unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
1159 atomic_t queue_stop_count[4];
1161 /* Indication if ieee80211_ops->open has been called */
1164 u8 mac80211_registered;
1166 /* Rx'd packet timing information */
1167 u32 last_beacon_time;
1172 int nvm_device_type;
1173 struct iwl_eeprom_calib_info *calib_info;
1175 enum nl80211_iftype iw_mode;
1177 struct sk_buff *ibss_beacon;
1179 /* Last Rx'd beacon timestamp */
1182 struct ieee80211_vif *vif;
1186 dma_addr_t shared_phys;
1188 struct iwl_hw_params hw_params;
1192 dma_addr_t ict_tbl_dma;
1193 dma_addr_t aligned_ict_tbl_dma;
1200 /* Current association information needed to configure the
1203 u16 assoc_capability;
1205 struct iwl_qos_info qos_data;
1207 struct workqueue_struct *workqueue;
1209 struct work_struct up;
1210 struct work_struct restart;
1211 struct work_struct calibrated_work;
1212 struct work_struct scan_completed;
1213 struct work_struct rx_replenish;
1214 struct work_struct abort_scan;
1215 struct work_struct update_link_led;
1216 struct work_struct auth_work;
1217 struct work_struct report_work;
1218 struct work_struct request_scan;
1219 struct work_struct beacon_update;
1220 struct work_struct tt_work;
1221 struct work_struct ct_enter;
1222 struct work_struct ct_exit;
1224 struct tasklet_struct irq_tasklet;
1226 struct delayed_work init_alive_start;
1227 struct delayed_work alive_start;
1228 struct delayed_work scan_check;
1231 struct delayed_work thermal_periodic;
1232 struct delayed_work rfkill_poll;
1235 s8 tx_power_user_lmt;
1236 s8 tx_power_device_lmt;
1237 s8 tx_power_lmt_in_half_dbm; /* max tx power in half-dBm format */
1240 #ifdef CONFIG_IWLWIFI_DEBUG
1241 /* debugging info */
1242 u32 debug_level; /* per device debugging will override global
1243 iwl_debug_level if set */
1245 atomic_t restrict_refcnt;
1247 #ifdef CONFIG_IWLWIFI_DEBUGFS
1253 struct iwl_debugfs *dbgfs;
1254 #endif /* CONFIG_IWLWIFI_DEBUGFS */
1255 #endif /* CONFIG_IWLWIFI_DEBUG */
1257 struct work_struct txpower_work;
1258 u32 disable_sens_cal;
1259 u32 disable_chain_noise_cal;
1260 u32 disable_tx_power_cal;
1261 struct work_struct run_time_calib_work;
1262 struct timer_list statistics_periodic;
1265 #define IWL_DEFAULT_TX_POWER 0x0F
1267 struct iwl3945_notif_statistics statistics_39;
1272 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
1274 set_bit(txq_id, &priv->txq_ctx_active_msk);
1277 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
1279 clear_bit(txq_id, &priv->txq_ctx_active_msk);
1282 #ifdef CONFIG_IWLWIFI_DEBUG
1283 const char *iwl_get_tx_fail_reason(u32 status);
1285 * iwl_get_debug_level: Return active debug level for device
1287 * Using sysfs it is possible to set per device debug level. This debug
1288 * level will be used if set, otherwise the global debug level which can be
1289 * set via module parameter is used.
1291 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1293 if (priv->debug_level)
1294 return priv->debug_level;
1296 return iwl_debug_level;
1299 static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
1301 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1303 return iwl_debug_level;
1308 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1309 int txq_id, int idx)
1311 if (priv->txq[txq_id].txb[idx].skb[0])
1312 return (struct ieee80211_hdr *)priv->txq[txq_id].
1313 txb[idx].skb[0]->data;
1318 static inline int iwl_is_associated(struct iwl_priv *priv)
1320 return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1323 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1325 if (ch_info == NULL)
1327 return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1330 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1332 return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1335 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1337 return ch_info->band == IEEE80211_BAND_5GHZ;
1340 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1342 return ch_info->band == IEEE80211_BAND_2GHZ;
1345 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1347 return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1350 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1352 return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1355 #endif /* __iwl_dev_h__ */