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"
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_bgn_cfg;
56 extern struct iwl_cfg iwl5100_abg_cfg;
57 extern struct iwl_cfg iwl5150_agn_cfg;
58 extern struct iwl_cfg iwl5150_abg_cfg;
59 extern struct iwl_cfg iwl6000i_2agn_cfg;
60 extern struct iwl_cfg iwl6000i_2abg_cfg;
61 extern struct iwl_cfg iwl6000i_2bg_cfg;
62 extern struct iwl_cfg iwl6000_3agn_cfg;
63 extern struct iwl_cfg iwl6050_2agn_cfg;
64 extern struct iwl_cfg iwl6050_2abg_cfg;
65 extern struct iwl_cfg iwl1000_bgn_cfg;
66 extern struct iwl_cfg iwl1000_bg_cfg;
70 /* shared structures from iwl-5000.c */
71 extern struct iwl_mod_params iwl50_mod_params;
72 extern struct iwl_ucode_ops iwl5000_ucode;
73 extern struct iwl_lib_ops iwl5000_lib;
74 extern struct iwl_hcmd_ops iwl5000_hcmd;
75 extern struct iwl_hcmd_utils_ops iwl5000_hcmd_utils;
77 /* shared functions from iwl-5000.c */
78 extern u16 iwl5000_get_hcmd_size(u8 cmd_id, u16 len);
79 extern u16 iwl5000_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd,
81 extern void iwl5000_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
83 extern int iwl5000_calc_rssi(struct iwl_priv *priv,
84 struct iwl_rx_phy_res *rx_resp);
85 extern void iwl5000_nic_config(struct iwl_priv *priv);
86 extern u16 iwl5000_eeprom_calib_version(struct iwl_priv *priv);
87 extern const u8 *iwl5000_eeprom_query_addr(const struct iwl_priv *priv,
89 extern void iwl5000_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
90 struct iwl_tx_queue *txq,
92 extern void iwl5000_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
93 struct iwl_tx_queue *txq);
94 extern int iwl5000_load_ucode(struct iwl_priv *priv);
95 extern void iwl5000_init_alive_start(struct iwl_priv *priv);
96 extern int iwl5000_alive_notify(struct iwl_priv *priv);
97 extern int iwl5000_hw_set_hw_params(struct iwl_priv *priv);
98 extern int iwl5000_txq_agg_enable(struct iwl_priv *priv, int txq_id,
99 int tx_fifo, int sta_id, int tid, u16 ssn_idx);
100 extern int iwl5000_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
101 u16 ssn_idx, u8 tx_fifo);
102 extern void iwl5000_txq_set_sched(struct iwl_priv *priv, u32 mask);
103 extern void iwl5000_setup_deferred_work(struct iwl_priv *priv);
104 extern void iwl5000_rx_handler_setup(struct iwl_priv *priv);
105 extern int iwl5000_hw_valid_rtc_data_addr(u32 addr);
106 extern int iwl5000_send_tx_power(struct iwl_priv *priv);
107 extern void iwl5000_temperature(struct iwl_priv *priv);
109 /* CT-KILL constants */
110 #define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */
111 #define CT_KILL_THRESHOLD 114 /* in Celsius */
112 #define CT_KILL_EXIT_THRESHOLD 95 /* in Celsius */
114 /* Default noise level to report when noise measurement is not available.
115 * This may be because we're:
116 * 1) Not associated (4965, no beacon statistics being sent to driver)
117 * 2) Scanning (noise measurement does not apply to associated channel)
118 * 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
119 * Use default noise value of -127 ... this is below the range of measurable
120 * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
121 * Also, -127 works better than 0 when averaging frames with/without
122 * noise info (e.g. averaging might be done in app); measured dBm values are
123 * always negative ... using a negative value as the default keeps all
124 * averages within an s8's (used in some apps) range of negative values. */
125 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
128 * RTS threshold here is total size [2347] minus 4 FCS bytes
130 * a value of 0 means RTS on all data/management packets
131 * a value > max MSDU size means no RTS
132 * else RTS for data/management frames where MPDU is larger
135 #define DEFAULT_RTS_THRESHOLD 2347U
136 #define MIN_RTS_THRESHOLD 0U
137 #define MAX_RTS_THRESHOLD 2347U
138 #define MAX_MSDU_SIZE 2304U
139 #define MAX_MPDU_SIZE 2346U
140 #define DEFAULT_BEACON_INTERVAL 100U
141 #define DEFAULT_SHORT_RETRY_LIMIT 7U
142 #define DEFAULT_LONG_RETRY_LIMIT 4U
144 struct iwl_rx_mem_buffer {
147 struct list_head list;
150 #define rxb_addr(r) page_address(r->page)
153 struct iwl_device_cmd;
155 struct iwl_cmd_meta {
156 /* only for SYNC commands, iff the reply skb is wanted */
157 struct iwl_host_cmd *source;
159 * only for ASYNC commands
160 * (which is somewhat stupid -- look at iwl-sta.c for instance
161 * which duplicates a bunch of code because the callback isn't
162 * invoked for SYNC commands, if it were and its result passed
163 * through it would be simpler...)
165 void (*callback)(struct iwl_priv *priv,
166 struct iwl_device_cmd *cmd,
167 struct iwl_rx_packet *pkt);
169 /* The CMD_SIZE_HUGE flag bit indicates that the command
170 * structure is stored at the end of the shared queue memory. */
173 DECLARE_PCI_UNMAP_ADDR(mapping)
174 DECLARE_PCI_UNMAP_LEN(len)
178 * Generic queue structure
180 * Contains common data for Rx and Tx queues
183 int n_bd; /* number of BDs in this queue */
184 int write_ptr; /* 1-st empty entry (index) host_w*/
185 int read_ptr; /* last used entry (index) host_r*/
186 dma_addr_t dma_addr; /* physical addr for BD's */
187 int n_window; /* safe queue window */
189 int low_mark; /* low watermark, resume queue if free
190 * space more than this */
191 int high_mark; /* high watermark, stop queue if free
192 * space less than this */
193 } __attribute__ ((packed));
195 /* One for each TFD */
197 struct sk_buff *skb[IWL_NUM_OF_TBS - 1];
201 * struct iwl_tx_queue - Tx Queue for DMA
202 * @q: generic Rx/Tx queue descriptor
203 * @bd: base of circular buffer of TFDs
204 * @cmd: array of command/TX buffer pointers
205 * @meta: array of meta data for each command/tx buffer
206 * @dma_addr_cmd: physical address of cmd/tx buffer array
207 * @txb: array of per-TFD driver data
208 * @need_update: indicates need to update read/write index
209 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
211 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
212 * descriptors) and required locking structures.
214 #define TFD_TX_CMD_SLOTS 256
215 #define TFD_CMD_SLOTS 32
217 struct iwl_tx_queue {
220 struct iwl_device_cmd **cmd;
221 struct iwl_cmd_meta *meta;
222 struct iwl_tx_info *txb;
229 #define IWL_NUM_SCAN_RATES (2)
231 struct iwl4965_channel_tgd_info {
236 struct iwl4965_channel_tgh_info {
240 #define IWL4965_MAX_RATE (33)
242 struct iwl3945_clip_group {
243 /* maximum power level to prevent clipping for each rate, derived by
244 * us from this band's saturation power in EEPROM */
245 const s8 clip_powers[IWL_MAX_RATES];
248 /* current Tx power values to use, one for each rate for each channel.
249 * requested power is limited by:
250 * -- regulatory EEPROM limits for this channel
251 * -- hardware capabilities (clip-powers)
252 * -- spectrum management
253 * -- user preference (e.g. iwconfig)
254 * when requested power is set, base power index must also be set. */
255 struct iwl3945_channel_power_info {
256 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
257 s8 power_table_index; /* actual (compenst'd) index into gain table */
258 s8 base_power_index; /* gain index for power at factory temp. */
259 s8 requested_power; /* power (dBm) requested for this chnl/rate */
262 /* current scan Tx power values to use, one for each scan rate for each
264 struct iwl3945_scan_power_info {
265 struct iwl3945_tx_power tpc; /* actual radio and DSP gain settings */
266 s8 power_table_index; /* actual (compenst'd) index into gain table */
267 s8 requested_power; /* scan pwr (dBm) requested for chnl/rate */
271 * One for each channel, holds all channel setup data
272 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
275 struct iwl_channel_info {
276 struct iwl4965_channel_tgd_info tgd;
277 struct iwl4965_channel_tgh_info tgh;
278 struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */
279 struct iwl_eeprom_channel ht40_eeprom; /* EEPROM regulatory limit for
282 u8 channel; /* channel number */
283 u8 flags; /* flags copied from EEPROM */
284 s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
285 s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
286 s8 min_power; /* always 0 */
287 s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
289 u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */
290 u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */
291 enum ieee80211_band band;
293 /* HT40 channel info */
294 s8 ht40_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
295 u8 ht40_flags; /* flags copied from EEPROM */
296 u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */
298 /* Radio/DSP gain settings for each "normal" data Tx rate.
299 * These include, in addition to RF and DSP gain, a few fields for
300 * remembering/modifying gain settings (indexes). */
301 struct iwl3945_channel_power_info power_info[IWL4965_MAX_RATE];
303 /* Radio/DSP gain settings for each scan rate, for directed scans. */
304 struct iwl3945_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
307 #define IWL_TX_FIFO_BK 0
308 #define IWL_TX_FIFO_BE 1
309 #define IWL_TX_FIFO_VI 2
310 #define IWL_TX_FIFO_VO 3
311 #define IWL_TX_FIFO_UNUSED -1
313 /* Minimum number of queues. MAX_NUM is defined in hw specific files.
314 * Set the minimum to accommodate the 4 standard TX queues, 1 command
315 * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
316 #define IWL_MIN_NUM_QUEUES 10
319 * Queue #4 is the command queue for 3945/4965/5x00/1000/6x00,
320 * the driver maps it into the appropriate device FIFO for the
323 #define IWL_CMD_QUEUE_NUM 4
325 /* Power management (not Tx power) structures */
332 #define IEEE80211_DATA_LEN 2304
333 #define IEEE80211_4ADDR_LEN 30
334 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
335 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
339 struct ieee80211_hdr frame;
340 struct iwl_tx_beacon_cmd beacon;
341 u8 raw[IEEE80211_FRAME_LEN];
344 struct list_head list;
347 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
348 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
349 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
355 CMD_SIZE_HUGE = (1 << 0),
356 CMD_ASYNC = (1 << 1),
357 CMD_WANT_SKB = (1 << 2),
360 #define DEF_CMD_PAYLOAD_SIZE 320
363 * IWL_LINK_HDR_MAX should include ieee80211_hdr, radiotap header,
364 * SNAP header and alignment. It should also be big enough for 802.11
367 #define IWL_LINK_HDR_MAX 64
370 * struct iwl_device_cmd
372 * For allocation of the command and tx queues, this establishes the overall
373 * size of the largest command we send to uCode, except for a scan command
374 * (which is relatively huge; space is allocated separately).
376 struct iwl_device_cmd {
377 struct iwl_cmd_header hdr; /* uCode API */
383 struct iwl_tx_cmd tx;
384 struct iwl6000_channel_switch_cmd chswitch;
385 u8 payload[DEF_CMD_PAYLOAD_SIZE];
386 } __attribute__ ((packed)) cmd;
387 } __attribute__ ((packed));
389 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
392 struct iwl_host_cmd {
394 unsigned long reply_page;
395 void (*callback)(struct iwl_priv *priv,
396 struct iwl_device_cmd *cmd,
397 struct iwl_rx_packet *pkt);
403 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
404 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
405 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
408 * struct iwl_rx_queue - Rx queue
409 * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
410 * @dma_addr: bus address of buffer of receive buffer descriptors (rbd)
411 * @read: Shared index to newest available Rx buffer
412 * @write: Shared index to oldest written Rx packet
413 * @free_count: Number of pre-allocated buffers in rx_free
414 * @rx_free: list of free SKBs for use
415 * @rx_used: List of Rx buffers with no SKB
416 * @need_update: flag to indicate we need to update read/write index
417 * @rb_stts: driver's pointer to receive buffer status
418 * @rb_stts_dma: bus address of receive buffer status
420 * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
422 struct iwl_rx_queue {
425 struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
426 struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
431 struct list_head rx_free;
432 struct list_head rx_used;
434 struct iwl_rb_status *rb_stts;
435 dma_addr_t rb_stts_dma;
439 #define IWL_SUPPORTED_RATES_IE_LEN 8
441 #define MAX_TID_COUNT 9
443 #define IWL_INVALID_RATE 0xFF
444 #define IWL_INVALID_VALUE -1
447 * struct iwl_ht_agg -- aggregation status while waiting for block-ack
448 * @txq_id: Tx queue used for Tx attempt
449 * @frame_count: # frames attempted by Tx command
450 * @wait_for_ba: Expect block-ack before next Tx reply
451 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
452 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
453 * @bitmap1: High order, one bit for each frame pending ACK in Tx window
454 * @rate_n_flags: Rate at which Tx was attempted
456 * If REPLY_TX indicates that aggregation was attempted, driver must wait
457 * for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
458 * until block ack arrives.
467 #define IWL_AGG_OFF 0
469 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
470 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
475 struct iwl_tid_data {
478 struct iwl_ht_agg agg;
482 enum ieee80211_key_alg alg;
488 union iwl_ht_rate_supp {
496 #define CFG_HT_RX_AMPDU_FACTOR_DEF (0x3)
499 * Maximal MPDU density for TX aggregation
505 #define CFG_HT_MPDU_DENSITY_4USEC (0x5)
506 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC
508 struct iwl_ht_config {
509 /* self configuration data */
512 bool single_chain_sufficient;
513 enum ieee80211_smps_mode smps; /* current smps mode */
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;
987 * schedule the timer to wake up every UCODE_TRACE_PERIOD milliseconds
988 * to perform continuous uCode event logging operation if enabled
990 #define UCODE_TRACE_PERIOD (100)
993 * iwl_event_log: current uCode event log position
995 * @ucode_trace: enable/disable ucode continuous trace timer
996 * @num_wraps: how many times the event buffer wraps
997 * @next_entry: the entry just before the next one that uCode would fill
998 * @non_wraps_count: counter for no wrap detected when dump ucode events
999 * @wraps_once_count: counter for wrap once detected when dump ucode events
1000 * @wraps_more_count: counter for wrap more than once detected
1001 * when dump ucode events
1003 struct iwl_event_log {
1007 int non_wraps_count;
1008 int wraps_once_count;
1009 int wraps_more_count;
1013 * host interrupt timeout value
1014 * used with setting interrupt coalescing timer
1015 * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit
1017 * default interrupt coalescing timer is 64 x 32 = 2048 usecs
1018 * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs
1020 #define IWL_HOST_INT_TIMEOUT_MAX (0xFF)
1021 #define IWL_HOST_INT_TIMEOUT_DEF (0x40)
1022 #define IWL_HOST_INT_TIMEOUT_MIN (0x0)
1023 #define IWL_HOST_INT_CALIB_TIMEOUT_MAX (0xFF)
1024 #define IWL_HOST_INT_CALIB_TIMEOUT_DEF (0x10)
1025 #define IWL_HOST_INT_CALIB_TIMEOUT_MIN (0x0)
1028 * This is the threshold value of plcp error rate per 100mSecs. It is
1029 * used to set and check for the validity of plcp_delta.
1031 #define IWL_MAX_PLCP_ERR_THRESHOLD_MIN (0)
1032 #define IWL_MAX_PLCP_ERR_THRESHOLD_DEF (50)
1033 #define IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF (100)
1034 #define IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF (200)
1035 #define IWL_MAX_PLCP_ERR_THRESHOLD_MAX (255)
1037 #define IWL_DELAY_NEXT_FORCE_RF_RESET (HZ*3)
1038 #define IWL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5)
1043 IWL_MAX_FORCE_RESET,
1046 struct iwl_force_reset {
1047 int reset_request_count;
1048 int reset_success_count;
1049 int reset_reject_count;
1050 unsigned long reset_duration;
1051 unsigned long last_force_reset_jiffies;
1056 /* ieee device used by generic ieee processing code */
1057 struct ieee80211_hw *hw;
1058 struct ieee80211_channel *ieee_channels;
1059 struct ieee80211_rate *ieee_rates;
1060 struct iwl_cfg *cfg;
1062 /* temporary frame storage list */
1063 struct list_head free_frames;
1066 enum ieee80211_band band;
1069 void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
1070 struct iwl_rx_mem_buffer *rxb);
1072 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
1074 /* spectrum measurement report caching */
1075 struct iwl_spectrum_notification measure_report;
1076 u8 measurement_status;
1078 /* ucode beacon time */
1079 u32 ucode_beacon_time;
1080 int missed_beacon_threshold;
1082 /* storing the jiffies when the plcp error rate is received */
1083 unsigned long plcp_jiffies;
1086 struct iwl_force_reset force_reset[IWL_MAX_FORCE_RESET];
1088 /* we allocate array of iwl4965_channel_info for NIC's valid channels.
1089 * Access via channel # using indirect index array */
1090 struct iwl_channel_info *channel_info; /* channel info array */
1091 u8 channel_count; /* # of channels */
1093 /* thermal calibration */
1094 s32 temperature; /* degrees Kelvin */
1095 s32 last_temperature;
1097 /* init calibration results */
1098 struct iwl_calib_result calib_results[IWL_CALIB_MAX];
1100 /* Scan related variables */
1101 unsigned long next_scan_jiffies;
1102 unsigned long scan_start;
1103 unsigned long scan_pass_start;
1104 unsigned long scan_start_tsf;
1107 struct cfg80211_scan_request *scan_request;
1108 bool is_internal_short_scan;
1109 u8 scan_tx_ant[IEEE80211_NUM_BANDS];
1113 spinlock_t lock; /* protect general shared data */
1114 spinlock_t hcmd_lock; /* protect hcmd */
1115 spinlock_t reg_lock; /* protect hw register access */
1117 struct mutex sync_cmd_mutex; /* enable serialization of sync commands */
1119 /* basic pci-network driver stuff */
1120 struct pci_dev *pci_dev;
1122 /* pci hardware address support */
1123 void __iomem *hw_base;
1128 /* uCode images, save to reload in case of failure */
1129 int fw_index; /* firmware we're trying to load */
1130 u32 ucode_ver; /* version of ucode, copy of
1132 struct fw_desc ucode_code; /* runtime inst */
1133 struct fw_desc ucode_data; /* runtime data original */
1134 struct fw_desc ucode_data_backup; /* runtime data save/restore */
1135 struct fw_desc ucode_init; /* initialization inst */
1136 struct fw_desc ucode_init_data; /* initialization data */
1137 struct fw_desc ucode_boot; /* bootstrap inst */
1138 enum ucode_type ucode_type;
1139 u8 ucode_write_complete; /* the image write is complete */
1140 char firmware_name[25];
1143 struct iwl_rxon_time_cmd rxon_timing;
1145 /* We declare this const so it can only be
1146 * changed via explicit cast within the
1147 * routines that actually update the physical
1149 const struct iwl_rxon_cmd active_rxon;
1150 struct iwl_rxon_cmd staging_rxon;
1152 struct iwl_switch_rxon switch_rxon;
1154 /* 1st responses from initialize and runtime uCode images.
1155 * 4965's initialize alive response contains some calibration data. */
1156 struct iwl_init_alive_resp card_alive_init;
1157 struct iwl_alive_resp card_alive;
1159 unsigned long last_blink_time;
1166 u8 assoc_station_added;
1168 struct iwl_sensitivity_data sensitivity_data;
1169 struct iwl_chain_noise_data chain_noise_data;
1170 __le16 sensitivity_tbl[HD_TABLE_SIZE];
1172 struct iwl_ht_config current_ht_config;
1173 u8 last_phy_res[100];
1175 /* Rate scaling data */
1178 wait_queue_head_t wait_command_queue;
1180 int activity_timer_active;
1182 /* Rx and Tx DMA processing queues */
1183 struct iwl_rx_queue rxq;
1184 struct iwl_tx_queue *txq;
1185 unsigned long txq_ctx_active_msk;
1186 struct iwl_dma_ptr kw; /* keep warm address */
1187 struct iwl_dma_ptr scd_bc_tbls;
1189 u32 scd_base_addr; /* scheduler sram base address */
1191 unsigned long status;
1193 int last_rx_noise; /* From beacon statistics */
1195 /* counts mgmt, ctl, and data packets */
1196 struct traffic_stats tx_stats;
1197 struct traffic_stats rx_stats;
1199 /* counts interrupts */
1200 struct isr_statistics isr_stats;
1202 struct iwl_power_mgr power_data;
1203 struct iwl_tt_mgmt thermal_throttle;
1205 struct iwl_notif_statistics statistics;
1206 #ifdef CONFIG_IWLWIFI_DEBUG
1207 struct iwl_notif_statistics accum_statistics;
1208 struct iwl_notif_statistics delta_statistics;
1209 struct iwl_notif_statistics max_delta;
1212 /* context information */
1215 u8 mac_addr[ETH_ALEN];
1217 /*station table variables */
1218 spinlock_t sta_lock;
1220 struct iwl_station_entry stations[IWL_STATION_COUNT];
1221 struct iwl_wep_key wep_keys[WEP_KEYS_MAX]; /* protected by mutex */
1224 unsigned long ucode_key_table;
1226 /* queue refcounts */
1227 #define IWL_MAX_HW_QUEUES 32
1228 unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
1230 atomic_t queue_stop_count[4];
1232 /* Indication if ieee80211_ops->open has been called */
1235 u8 mac80211_registered;
1237 /* eeprom -- this is in the card's little endian byte order */
1239 int nvm_device_type;
1240 struct iwl_eeprom_calib_info *calib_info;
1242 enum nl80211_iftype iw_mode;
1244 struct sk_buff *ibss_beacon;
1246 /* Last Rx'd beacon timestamp */
1249 struct ieee80211_vif *vif;
1252 #if defined(CONFIG_IWL3945) || defined(CONFIG_IWL3945_MODULE)
1255 dma_addr_t shared_phys;
1257 struct delayed_work thermal_periodic;
1258 struct delayed_work rfkill_poll;
1260 struct iwl3945_notif_statistics statistics;
1263 int last_rx_rssi; /* From Rx packet statistics */
1265 /* Rx'd packet timing information */
1266 u32 last_beacon_time;
1270 * each calibration channel group in the
1271 * EEPROM has a derived clip setting for
1274 const struct iwl3945_clip_group clip_groups[5];
1278 #if defined(CONFIG_IWLAGN) || defined(CONFIG_IWLAGN_MODULE)
1283 dma_addr_t ict_tbl_dma;
1284 dma_addr_t aligned_ict_tbl_dma;
1292 struct iwl_hw_params hw_params;
1295 /* Current association information needed to configure the
1298 u16 assoc_capability;
1300 struct iwl_qos_info qos_data;
1302 struct workqueue_struct *workqueue;
1304 struct work_struct restart;
1305 struct work_struct scan_completed;
1306 struct work_struct rx_replenish;
1307 struct work_struct abort_scan;
1308 struct work_struct request_scan;
1309 struct work_struct beacon_update;
1310 struct work_struct tt_work;
1311 struct work_struct ct_enter;
1312 struct work_struct ct_exit;
1314 struct tasklet_struct irq_tasklet;
1316 struct delayed_work init_alive_start;
1317 struct delayed_work alive_start;
1318 struct delayed_work scan_check;
1321 s8 tx_power_user_lmt;
1322 s8 tx_power_device_lmt;
1323 s8 tx_power_lmt_in_half_dbm; /* max tx power in half-dBm format */
1326 #ifdef CONFIG_IWLWIFI_DEBUG
1327 /* debugging info */
1328 u32 debug_level; /* per device debugging will override global
1329 iwl_debug_level if set */
1331 atomic_t restrict_refcnt;
1333 #ifdef CONFIG_IWLWIFI_DEBUGFS
1339 struct dentry *debugfs_dir;
1340 u32 dbgfs_sram_offset, dbgfs_sram_len;
1341 #endif /* CONFIG_IWLWIFI_DEBUGFS */
1342 #endif /* CONFIG_IWLWIFI_DEBUG */
1344 struct work_struct txpower_work;
1345 u32 disable_sens_cal;
1346 u32 disable_chain_noise_cal;
1347 u32 disable_tx_power_cal;
1348 struct work_struct run_time_calib_work;
1349 struct timer_list statistics_periodic;
1350 struct timer_list ucode_trace;
1353 struct iwl_event_log event_log;
1356 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
1358 set_bit(txq_id, &priv->txq_ctx_active_msk);
1361 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
1363 clear_bit(txq_id, &priv->txq_ctx_active_msk);
1366 #ifdef CONFIG_IWLWIFI_DEBUG
1367 const char *iwl_get_tx_fail_reason(u32 status);
1369 * iwl_get_debug_level: Return active debug level for device
1371 * Using sysfs it is possible to set per device debug level. This debug
1372 * level will be used if set, otherwise the global debug level which can be
1373 * set via module parameter is used.
1375 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1377 if (priv->debug_level)
1378 return priv->debug_level;
1380 return iwl_debug_level;
1383 static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
1385 static inline u32 iwl_get_debug_level(struct iwl_priv *priv)
1387 return iwl_debug_level;
1392 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1393 int txq_id, int idx)
1395 if (priv->txq[txq_id].txb[idx].skb[0])
1396 return (struct ieee80211_hdr *)priv->txq[txq_id].
1397 txb[idx].skb[0]->data;
1402 static inline int iwl_is_associated(struct iwl_priv *priv)
1404 return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1407 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1409 if (ch_info == NULL)
1411 return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1414 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1416 return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1419 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1421 return ch_info->band == IEEE80211_BAND_5GHZ;
1424 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1426 return ch_info->band == IEEE80211_BAND_2GHZ;
1429 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1431 return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1434 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1436 return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1439 static inline void __iwl_free_pages(struct iwl_priv *priv, struct page *page)
1441 __free_pages(page, priv->hw_params.rx_page_order);
1442 priv->alloc_rxb_page--;
1445 static inline void iwl_free_pages(struct iwl_priv *priv, unsigned long page)
1447 free_pages(page, priv->hw_params.rx_page_order);
1448 priv->alloc_rxb_page--;
1450 #endif /* __iwl_dev_h__ */