/****************************************************************************** * * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * The full GNU General Public License is included in this distribution in the * file called LICENSE. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ /* * Please use this file (iwl-dev.h) for driver implementation definitions. * Please use iwl-commands.h for uCode API definitions. */ #ifndef __iwl_dev_h__ #define __iwl_dev_h__ #include /* for struct pci_device_id */ #include #include #include #include #include "iwl-eeprom.h" #include "iwl-csr.h" #include "iwl-prph.h" #include "iwl-fh.h" #include "iwl-debug.h" #include "iwl-agn-hw.h" #include "iwl-led.h" #include "iwl-power.h" #include "iwl-agn-rs.h" #include "iwl-agn-tt.h" #include "iwl-bus.h" #include "iwl-trans.h" #define DRV_NAME "iwlagn" struct iwl_tx_queue; /* CT-KILL constants */ #define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */ #define CT_KILL_THRESHOLD 114 /* in Celsius */ #define CT_KILL_EXIT_THRESHOLD 95 /* in Celsius */ /* Default noise level to report when noise measurement is not available. * This may be because we're: * 1) Not associated (4965, no beacon statistics being sent to driver) * 2) Scanning (noise measurement does not apply to associated channel) * 3) Receiving CCK (3945 delivers noise info only for OFDM frames) * Use default noise value of -127 ... this is below the range of measurable * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user. * Also, -127 works better than 0 when averaging frames with/without * noise info (e.g. averaging might be done in app); measured dBm values are * always negative ... using a negative value as the default keeps all * averages within an s8's (used in some apps) range of negative values. */ #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127) /* * RTS threshold here is total size [2347] minus 4 FCS bytes * Per spec: * a value of 0 means RTS on all data/management packets * a value > max MSDU size means no RTS * else RTS for data/management frames where MPDU is larger * than RTS value. */ #define DEFAULT_RTS_THRESHOLD 2347U #define MIN_RTS_THRESHOLD 0U #define MAX_RTS_THRESHOLD 2347U #define MAX_MSDU_SIZE 2304U #define MAX_MPDU_SIZE 2346U #define DEFAULT_BEACON_INTERVAL 200U #define DEFAULT_SHORT_RETRY_LIMIT 7U #define DEFAULT_LONG_RETRY_LIMIT 4U struct iwl_rx_mem_buffer { dma_addr_t page_dma; struct page *page; struct list_head list; }; #define rxb_addr(r) page_address(r->page) /* defined below */ struct iwl_device_cmd; struct iwl_cmd_meta { /* only for SYNC commands, iff the reply skb is wanted */ struct iwl_host_cmd *source; /* * only for ASYNC commands * (which is somewhat stupid -- look at iwl-sta.c for instance * which duplicates a bunch of code because the callback isn't * invoked for SYNC commands, if it were and its result passed * through it would be simpler...) */ void (*callback)(struct iwl_priv *priv, struct iwl_device_cmd *cmd, struct iwl_rx_packet *pkt); u32 flags; DEFINE_DMA_UNMAP_ADDR(mapping); DEFINE_DMA_UNMAP_LEN(len); }; /* * Generic queue structure * * Contains common data for Rx and Tx queues. * * Note the difference between n_bd and n_window: the hardware * always assumes 256 descriptors, so n_bd is always 256 (unless * there might be HW changes in the future). For the normal TX * queues, n_window, which is the size of the software queue data * is also 256; however, for the command queue, n_window is only * 32 since we don't need so many commands pending. Since the HW * still uses 256 BDs for DMA though, n_bd stays 256. As a result, * the software buffers (in the variables @meta, @txb in struct * iwl_tx_queue) only have 32 entries, while the HW buffers (@tfds * in the same struct) have 256. * This means that we end up with the following: * HW entries: | 0 | ... | N * 32 | ... | N * 32 + 31 | ... | 255 | * SW entries: | 0 | ... | 31 | * where N is a number between 0 and 7. This means that the SW * data is a window overlayed over the HW queue. */ struct iwl_queue { int n_bd; /* number of BDs in this queue */ int write_ptr; /* 1-st empty entry (index) host_w*/ int read_ptr; /* last used entry (index) host_r*/ /* use for monitoring and recovering the stuck queue */ dma_addr_t dma_addr; /* physical addr for BD's */ int n_window; /* safe queue window */ u32 id; int low_mark; /* low watermark, resume queue if free * space more than this */ int high_mark; /* high watermark, stop queue if free * space less than this */ }; /* One for each TFD */ struct iwl_tx_info { struct sk_buff *skb; struct iwl_rxon_context *ctx; }; /** * struct iwl_tx_queue - Tx Queue for DMA * @q: generic Rx/Tx queue descriptor * @bd: base of circular buffer of TFDs * @cmd: array of command/TX buffer pointers * @meta: array of meta data for each command/tx buffer * @dma_addr_cmd: physical address of cmd/tx buffer array * @txb: array of per-TFD driver data * @time_stamp: time (in jiffies) of last read_ptr change * @need_update: indicates need to update read/write index * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled * * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame * descriptors) and required locking structures. */ #define TFD_TX_CMD_SLOTS 256 #define TFD_CMD_SLOTS 32 struct iwl_tx_queue { struct iwl_queue q; struct iwl_tfd *tfds; struct iwl_device_cmd **cmd; struct iwl_cmd_meta *meta; struct iwl_tx_info *txb; unsigned long time_stamp; u8 need_update; u8 sched_retry; u8 active; u8 swq_id; }; #define IWL_NUM_SCAN_RATES (2) /* * One for each channel, holds all channel setup data * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant * with one another! */ struct iwl_channel_info { struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */ struct iwl_eeprom_channel ht40_eeprom; /* EEPROM regulatory limit for * HT40 channel */ u8 channel; /* channel number */ u8 flags; /* flags copied from EEPROM */ s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */ s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */ s8 min_power; /* always 0 */ s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */ u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */ u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */ enum ieee80211_band band; /* HT40 channel info */ s8 ht40_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */ u8 ht40_flags; /* flags copied from EEPROM */ u8 ht40_extension_channel; /* HT_IE_EXT_CHANNEL_* */ }; #define IWL_TX_FIFO_BK 0 /* shared */ #define IWL_TX_FIFO_BE 1 #define IWL_TX_FIFO_VI 2 /* shared */ #define IWL_TX_FIFO_VO 3 #define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK #define IWL_TX_FIFO_BE_IPAN 4 #define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI #define IWL_TX_FIFO_VO_IPAN 5 #define IWL_TX_FIFO_UNUSED -1 /* Minimum number of queues. MAX_NUM is defined in hw specific files. * Set the minimum to accommodate the 4 standard TX queues, 1 command * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */ #define IWL_MIN_NUM_QUEUES 10 /* * Command queue depends on iPAN support. */ #define IWL_DEFAULT_CMD_QUEUE_NUM 4 #define IWL_IPAN_CMD_QUEUE_NUM 9 /* * This queue number is required for proper operation * because the ucode will stop/start the scheduler as * required. */ #define IWL_IPAN_MCAST_QUEUE 8 #define IEEE80211_DATA_LEN 2304 #define IEEE80211_4ADDR_LEN 30 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN) #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN) #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4) #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ) #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4) enum { CMD_SYNC = 0, CMD_ASYNC = BIT(0), CMD_WANT_SKB = BIT(1), CMD_ON_DEMAND = BIT(2), }; #define DEF_CMD_PAYLOAD_SIZE 320 /** * struct iwl_device_cmd * * For allocation of the command and tx queues, this establishes the overall * size of the largest command we send to uCode, except for commands that * aren't fully copied and use other TFD space. */ struct iwl_device_cmd { struct iwl_cmd_header hdr; /* uCode API */ union { u32 flags; u8 val8; u16 val16; u32 val32; struct iwl_tx_cmd tx; struct iwl6000_channel_switch_cmd chswitch; u8 payload[DEF_CMD_PAYLOAD_SIZE]; } __packed cmd; } __packed; #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd)) #define IWL_MAX_CMD_TFDS 2 enum iwl_hcmd_dataflag { IWL_HCMD_DFL_NOCOPY = BIT(0), }; /** * struct iwl_host_cmd - Host command to the uCode * @data: array of chunks that composes the data of the host command * @reply_page: pointer to the page that holds the response to the host command * @callback: * @flags: can be CMD_* note CMD_WANT_SKB is incompatible withe CMD_ASYNC * @len: array of the lenths of the chunks in data * @dataflags: * @id: id of the host command */ struct iwl_host_cmd { const void *data[IWL_MAX_CMD_TFDS]; unsigned long reply_page; void (*callback)(struct iwl_priv *priv, struct iwl_device_cmd *cmd, struct iwl_rx_packet *pkt); u32 flags; u16 len[IWL_MAX_CMD_TFDS]; u8 dataflags[IWL_MAX_CMD_TFDS]; u8 id; }; #define SUP_RATE_11A_MAX_NUM_CHANNELS 8 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12 /** * struct iwl_rx_queue - Rx queue * @bd: driver's pointer to buffer of receive buffer descriptors (rbd) * @bd_dma: bus address of buffer of receive buffer descriptors (rbd) * @read: Shared index to newest available Rx buffer * @write: Shared index to oldest written Rx packet * @free_count: Number of pre-allocated buffers in rx_free * @rx_free: list of free SKBs for use * @rx_used: List of Rx buffers with no SKB * @need_update: flag to indicate we need to update read/write index * @rb_stts: driver's pointer to receive buffer status * @rb_stts_dma: bus address of receive buffer status * * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers */ struct iwl_rx_queue { __le32 *bd; dma_addr_t bd_dma; struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS]; struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE]; u32 read; u32 write; u32 free_count; u32 write_actual; struct list_head rx_free; struct list_head rx_used; int need_update; struct iwl_rb_status *rb_stts; dma_addr_t rb_stts_dma; spinlock_t lock; }; #define IWL_SUPPORTED_RATES_IE_LEN 8 #define MAX_TID_COUNT 9 #define IWL_INVALID_RATE 0xFF #define IWL_INVALID_VALUE -1 /** * struct iwl_ht_agg -- aggregation status while waiting for block-ack * @txq_id: Tx queue used for Tx attempt * @frame_count: # frames attempted by Tx command * @wait_for_ba: Expect block-ack before next Tx reply * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window * @bitmap1: High order, one bit for each frame pending ACK in Tx window * @rate_n_flags: Rate at which Tx was attempted * * If REPLY_TX indicates that aggregation was attempted, driver must wait * for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info * until block ack arrives. */ struct iwl_ht_agg { u16 txq_id; u16 frame_count; u16 wait_for_ba; u16 start_idx; u64 bitmap; u32 rate_n_flags; #define IWL_AGG_OFF 0 #define IWL_AGG_ON 1 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2 #define IWL_EMPTYING_HW_QUEUE_DELBA 3 u8 state; u8 tx_fifo; }; struct iwl_tid_data { u16 seq_number; /* agn only */ u16 tfds_in_queue; struct iwl_ht_agg agg; }; struct iwl_hw_key { u32 cipher; int keylen; u8 keyidx; u8 key[32]; }; union iwl_ht_rate_supp { u16 rates; struct { u8 siso_rate; u8 mimo_rate; }; }; #define CFG_HT_RX_AMPDU_FACTOR_8K (0x0) #define CFG_HT_RX_AMPDU_FACTOR_16K (0x1) #define CFG_HT_RX_AMPDU_FACTOR_32K (0x2) #define CFG_HT_RX_AMPDU_FACTOR_64K (0x3) #define CFG_HT_RX_AMPDU_FACTOR_DEF CFG_HT_RX_AMPDU_FACTOR_64K #define CFG_HT_RX_AMPDU_FACTOR_MAX CFG_HT_RX_AMPDU_FACTOR_64K #define CFG_HT_RX_AMPDU_FACTOR_MIN CFG_HT_RX_AMPDU_FACTOR_8K /* * Maximal MPDU density for TX aggregation * 4 - 2us density * 5 - 4us density * 6 - 8us density * 7 - 16us density */ #define CFG_HT_MPDU_DENSITY_2USEC (0x4) #define CFG_HT_MPDU_DENSITY_4USEC (0x5) #define CFG_HT_MPDU_DENSITY_8USEC (0x6) #define CFG_HT_MPDU_DENSITY_16USEC (0x7) #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_4USEC #define CFG_HT_MPDU_DENSITY_MAX CFG_HT_MPDU_DENSITY_16USEC #define CFG_HT_MPDU_DENSITY_MIN (0x1) struct iwl_ht_config { bool single_chain_sufficient; enum ieee80211_smps_mode smps; /* current smps mode */ }; /* QoS structures */ struct iwl_qos_info { int qos_active; struct iwl_qosparam_cmd def_qos_parm; }; /* * Structure should be accessed with sta_lock held. When station addition * is in progress (IWL_STA_UCODE_INPROGRESS) it is possible to access only * the commands (iwl_addsta_cmd and iwl_link_quality_cmd) without sta_lock * held. */ struct iwl_station_entry { struct iwl_addsta_cmd sta; struct iwl_tid_data tid[MAX_TID_COUNT]; u8 used, ctxid; struct iwl_hw_key keyinfo; struct iwl_link_quality_cmd *lq; }; struct iwl_station_priv_common { struct iwl_rxon_context *ctx; u8 sta_id; }; /* * iwl_station_priv: Driver's private station information * * When mac80211 creates a station it reserves some space (hw->sta_data_size) * in the structure for use by driver. This structure is places in that * space. */ struct iwl_station_priv { struct iwl_station_priv_common common; struct iwl_lq_sta lq_sta; atomic_t pending_frames; bool client; bool asleep; u8 max_agg_bufsize; }; /** * struct iwl_vif_priv - driver's private per-interface information * * When mac80211 allocates a virtual interface, it can allocate * space for us to put data into. */ struct iwl_vif_priv { struct iwl_rxon_context *ctx; u8 ibss_bssid_sta_id; }; /* one for each uCode image (inst/data, boot/init/runtime) */ struct fw_desc { void *v_addr; /* access by driver */ dma_addr_t p_addr; /* access by card's busmaster DMA */ u32 len; /* bytes */ }; struct fw_img { struct fw_desc code, data; }; /* v1/v2 uCode file layout */ struct iwl_ucode_header { __le32 ver; /* major/minor/API/serial */ union { struct { __le32 inst_size; /* bytes of runtime code */ __le32 data_size; /* bytes of runtime data */ __le32 init_size; /* bytes of init code */ __le32 init_data_size; /* bytes of init data */ __le32 boot_size; /* bytes of bootstrap code */ u8 data[0]; /* in same order as sizes */ } v1; struct { __le32 build; /* build number */ __le32 inst_size; /* bytes of runtime code */ __le32 data_size; /* bytes of runtime data */ __le32 init_size; /* bytes of init code */ __le32 init_data_size; /* bytes of init data */ __le32 boot_size; /* bytes of bootstrap code */ u8 data[0]; /* in same order as sizes */ } v2; } u; }; /* * new TLV uCode file layout * * The new TLV file format contains TLVs, that each specify * some piece of data. To facilitate "groups", for example * different instruction image with different capabilities, * bundled with the same init image, an alternative mechanism * is provided: * When the alternative field is 0, that means that the item * is always valid. When it is non-zero, then it is only * valid in conjunction with items of the same alternative, * in which case the driver (user) selects one alternative * to use. */ enum iwl_ucode_tlv_type { IWL_UCODE_TLV_INVALID = 0, /* unused */ IWL_UCODE_TLV_INST = 1, IWL_UCODE_TLV_DATA = 2, IWL_UCODE_TLV_INIT = 3, IWL_UCODE_TLV_INIT_DATA = 4, IWL_UCODE_TLV_BOOT = 5, IWL_UCODE_TLV_PROBE_MAX_LEN = 6, /* a u32 value */ IWL_UCODE_TLV_PAN = 7, IWL_UCODE_TLV_RUNT_EVTLOG_PTR = 8, IWL_UCODE_TLV_RUNT_EVTLOG_SIZE = 9, IWL_UCODE_TLV_RUNT_ERRLOG_PTR = 10, IWL_UCODE_TLV_INIT_EVTLOG_PTR = 11, IWL_UCODE_TLV_INIT_EVTLOG_SIZE = 12, IWL_UCODE_TLV_INIT_ERRLOG_PTR = 13, IWL_UCODE_TLV_ENHANCE_SENS_TBL = 14, IWL_UCODE_TLV_PHY_CALIBRATION_SIZE = 15, /* 16 and 17 reserved for future use */ IWL_UCODE_TLV_FLAGS = 18, }; /** * enum iwl_ucode_tlv_flag - ucode API flags * @IWL_UCODE_TLV_FLAGS_PAN: This is PAN capable microcode; this previously * was a separate TLV but moved here to save space. * @IWL_UCODE_TLV_FLAGS_NEWSCAN: new uCode scan behaviour on hidden SSID, * treats good CRC threshold as a boolean * @IWL_UCODE_TLV_FLAGS_MFP: This uCode image supports MFP (802.11w). */ enum iwl_ucode_tlv_flag { IWL_UCODE_TLV_FLAGS_PAN = BIT(0), IWL_UCODE_TLV_FLAGS_NEWSCAN = BIT(1), IWL_UCODE_TLV_FLAGS_MFP = BIT(2), }; struct iwl_ucode_tlv { __le16 type; /* see above */ __le16 alternative; /* see comment */ __le32 length; /* not including type/length fields */ u8 data[0]; } __packed; #define IWL_TLV_UCODE_MAGIC 0x0a4c5749 struct iwl_tlv_ucode_header { /* * The TLV style ucode header is distinguished from * the v1/v2 style header by first four bytes being * zero, as such is an invalid combination of * major/minor/API/serial versions. */ __le32 zero; __le32 magic; u8 human_readable[64]; __le32 ver; /* major/minor/API/serial */ __le32 build; __le64 alternatives; /* bitmask of valid alternatives */ /* * The data contained herein has a TLV layout, * see above for the TLV header and types. * Note that each TLV is padded to a length * that is a multiple of 4 for alignment. */ u8 data[0]; }; struct iwl_sensitivity_ranges { u16 min_nrg_cck; u16 max_nrg_cck; u16 nrg_th_cck; u16 nrg_th_ofdm; u16 auto_corr_min_ofdm; u16 auto_corr_min_ofdm_mrc; u16 auto_corr_min_ofdm_x1; u16 auto_corr_min_ofdm_mrc_x1; u16 auto_corr_max_ofdm; u16 auto_corr_max_ofdm_mrc; u16 auto_corr_max_ofdm_x1; u16 auto_corr_max_ofdm_mrc_x1; u16 auto_corr_max_cck; u16 auto_corr_max_cck_mrc; u16 auto_corr_min_cck; u16 auto_corr_min_cck_mrc; u16 barker_corr_th_min; u16 barker_corr_th_min_mrc; u16 nrg_th_cca; }; #define KELVIN_TO_CELSIUS(x) ((x)-273) #define CELSIUS_TO_KELVIN(x) ((x)+273) /** * struct iwl_hw_params * @max_txq_num: Max # Tx queues supported * @scd_bc_tbls_size: size of scheduler byte count tables * @tfd_size: TFD size * @tx/rx_chains_num: Number of TX/RX chains * @valid_tx/rx_ant: usable antennas * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2) * @max_rxq_log: Log-base-2 of max_rxq_size * @rx_page_order: Rx buffer page order * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR * @max_stations: * @ht40_channel: is 40MHz width possible in band 2.4 * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ) * @sw_crypto: 0 for hw, 1 for sw * @max_xxx_size: for ucode uses * @ct_kill_threshold: temperature threshold * @beacon_time_tsf_bits: number of valid tsf bits for beacon time * @calib_init_cfg: setup initial calibrations for the hw * @calib_rt_cfg: setup runtime calibrations for the hw * @struct iwl_sensitivity_ranges: range of sensitivity values */ struct iwl_hw_params { u8 max_txq_num; u16 scd_bc_tbls_size; u32 tfd_size; u8 tx_chains_num; u8 rx_chains_num; u8 valid_tx_ant; u8 valid_rx_ant; u16 max_rxq_size; u16 max_rxq_log; u32 rx_page_order; u8 max_stations; u8 ht40_channel; u8 max_beacon_itrvl; /* in 1024 ms */ u32 max_inst_size; u32 max_data_size; u32 ct_kill_threshold; /* value in hw-dependent units */ u32 ct_kill_exit_threshold; /* value in hw-dependent units */ /* for 1000, 6000 series and up */ u16 beacon_time_tsf_bits; u32 calib_init_cfg; u32 calib_rt_cfg; const struct iwl_sensitivity_ranges *sens; }; /****************************************************************************** * * Functions implemented in core module which are forward declared here * for use by iwl-[4-5].c * * NOTE: The implementation of these functions are not hardware specific * which is why they are in the core module files. * * Naming convention -- * iwl_ <-- Is part of iwlwifi * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX) * ****************************************************************************/ extern void iwl_update_chain_flags(struct iwl_priv *priv); extern const u8 iwl_bcast_addr[ETH_ALEN]; extern int iwl_queue_space(const struct iwl_queue *q); static inline int iwl_queue_used(const struct iwl_queue *q, int i) { return q->write_ptr >= q->read_ptr ? (i >= q->read_ptr && i < q->write_ptr) : !(i < q->read_ptr && i >= q->write_ptr); } static inline u8 get_cmd_index(struct iwl_queue *q, u32 index) { return index & (q->n_window - 1); } struct iwl_dma_ptr { dma_addr_t dma; void *addr; size_t size; }; #define IWL_OPERATION_MODE_AUTO 0 #define IWL_OPERATION_MODE_HT_ONLY 1 #define IWL_OPERATION_MODE_MIXED 2 #define IWL_OPERATION_MODE_20MHZ 3 #define IWL_TX_CRC_SIZE 4 #define IWL_TX_DELIMITER_SIZE 4 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000 /* Sensitivity and chain noise calibration */ #define INITIALIZATION_VALUE 0xFFFF #define IWL_CAL_NUM_BEACONS 16 #define MAXIMUM_ALLOWED_PATHLOSS 15 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3 #define MAX_FA_OFDM 50 #define MIN_FA_OFDM 5 #define MAX_FA_CCK 50 #define MIN_FA_CCK 5 #define AUTO_CORR_STEP_OFDM 1 #define AUTO_CORR_STEP_CCK 3 #define AUTO_CORR_MAX_TH_CCK 160 #define NRG_DIFF 2 #define NRG_STEP_CCK 2 #define NRG_MARGIN 8 #define MAX_NUMBER_CCK_NO_FA 100 #define AUTO_CORR_CCK_MIN_VAL_DEF (125) #define CHAIN_A 0 #define CHAIN_B 1 #define CHAIN_C 2 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4 #define ALL_BAND_FILTER 0xFF00 #define IN_BAND_FILTER 0xFF #define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF #define NRG_NUM_PREV_STAT_L 20 #define NUM_RX_CHAINS 3 enum iwlagn_false_alarm_state { IWL_FA_TOO_MANY = 0, IWL_FA_TOO_FEW = 1, IWL_FA_GOOD_RANGE = 2, }; enum iwlagn_chain_noise_state { IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */ IWL_CHAIN_NOISE_ACCUMULATE, IWL_CHAIN_NOISE_CALIBRATED, IWL_CHAIN_NOISE_DONE, }; /* * enum iwl_calib * defines the order in which results of initial calibrations * should be sent to the runtime uCode */ enum iwl_calib { IWL_CALIB_XTAL, IWL_CALIB_DC, IWL_CALIB_LO, IWL_CALIB_TX_IQ, IWL_CALIB_TX_IQ_PERD, IWL_CALIB_BASE_BAND, IWL_CALIB_TEMP_OFFSET, IWL_CALIB_MAX }; /* Opaque calibration results */ struct iwl_calib_result { void *buf; size_t buf_len; }; /* Sensitivity calib data */ struct iwl_sensitivity_data { u32 auto_corr_ofdm; u32 auto_corr_ofdm_mrc; u32 auto_corr_ofdm_x1; u32 auto_corr_ofdm_mrc_x1; u32 auto_corr_cck; u32 auto_corr_cck_mrc; u32 last_bad_plcp_cnt_ofdm; u32 last_fa_cnt_ofdm; u32 last_bad_plcp_cnt_cck; u32 last_fa_cnt_cck; u32 nrg_curr_state; u32 nrg_prev_state; u32 nrg_value[10]; u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L]; u32 nrg_silence_ref; u32 nrg_energy_idx; u32 nrg_silence_idx; u32 nrg_th_cck; s32 nrg_auto_corr_silence_diff; u32 num_in_cck_no_fa; u32 nrg_th_ofdm; u16 barker_corr_th_min; u16 barker_corr_th_min_mrc; u16 nrg_th_cca; }; /* Chain noise (differential Rx gain) calib data */ struct iwl_chain_noise_data { u32 active_chains; u32 chain_noise_a; u32 chain_noise_b; u32 chain_noise_c; u32 chain_signal_a; u32 chain_signal_b; u32 chain_signal_c; u16 beacon_count; u8 disconn_array[NUM_RX_CHAINS]; u8 delta_gain_code[NUM_RX_CHAINS]; u8 radio_write; u8 state; }; #define EEPROM_SEM_TIMEOUT 10 /* milliseconds */ #define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */ #define IWL_TRAFFIC_ENTRIES (256) #define IWL_TRAFFIC_ENTRY_SIZE (64) enum { MEASUREMENT_READY = (1 << 0), MEASUREMENT_ACTIVE = (1 << 1), }; enum iwl_nvm_type { NVM_DEVICE_TYPE_EEPROM = 0, NVM_DEVICE_TYPE_OTP, }; /* * Two types of OTP memory access modes * IWL_OTP_ACCESS_ABSOLUTE - absolute address mode, * based on physical memory addressing * IWL_OTP_ACCESS_RELATIVE - relative address mode, * based on logical memory addressing */ enum iwl_access_mode { IWL_OTP_ACCESS_ABSOLUTE, IWL_OTP_ACCESS_RELATIVE, }; /** * enum iwl_pa_type - Power Amplifier type * @IWL_PA_SYSTEM: based on uCode configuration * @IWL_PA_INTERNAL: use Internal only */ enum iwl_pa_type { IWL_PA_SYSTEM = 0, IWL_PA_INTERNAL = 1, }; /* interrupt statistics */ struct isr_statistics { u32 hw; u32 sw; u32 err_code; u32 sch; u32 alive; u32 rfkill; u32 ctkill; u32 wakeup; u32 rx; u32 rx_handlers[REPLY_MAX]; u32 tx; u32 unhandled; }; /* reply_tx_statistics (for _agn devices) */ struct reply_tx_error_statistics { u32 pp_delay; u32 pp_few_bytes; u32 pp_bt_prio; u32 pp_quiet_period; u32 pp_calc_ttak; u32 int_crossed_retry; u32 short_limit; u32 long_limit; u32 fifo_underrun; u32 drain_flow; u32 rfkill_flush; u32 life_expire; u32 dest_ps; u32 host_abort; u32 bt_retry; u32 sta_invalid; u32 frag_drop; u32 tid_disable; u32 fifo_flush; u32 insuff_cf_poll; u32 fail_hw_drop; u32 sta_color_mismatch; u32 unknown; }; /* reply_agg_tx_statistics (for _agn devices) */ struct reply_agg_tx_error_statistics { u32 underrun; u32 bt_prio; u32 few_bytes; u32 abort; u32 last_sent_ttl; u32 last_sent_try; u32 last_sent_bt_kill; u32 scd_query; u32 bad_crc32; u32 response; u32 dump_tx; u32 delay_tx; u32 unknown; }; /* management statistics */ enum iwl_mgmt_stats { MANAGEMENT_ASSOC_REQ = 0, MANAGEMENT_ASSOC_RESP, MANAGEMENT_REASSOC_REQ, MANAGEMENT_REASSOC_RESP, MANAGEMENT_PROBE_REQ, MANAGEMENT_PROBE_RESP, MANAGEMENT_BEACON, MANAGEMENT_ATIM, MANAGEMENT_DISASSOC, MANAGEMENT_AUTH, MANAGEMENT_DEAUTH, MANAGEMENT_ACTION, MANAGEMENT_MAX, }; /* control statistics */ enum iwl_ctrl_stats { CONTROL_BACK_REQ = 0, CONTROL_BACK, CONTROL_PSPOLL, CONTROL_RTS, CONTROL_CTS, CONTROL_ACK, CONTROL_CFEND, CONTROL_CFENDACK, CONTROL_MAX, }; struct traffic_stats { #ifdef CONFIG_IWLWIFI_DEBUGFS u32 mgmt[MANAGEMENT_MAX]; u32 ctrl[CONTROL_MAX]; u32 data_cnt; u64 data_bytes; #endif }; /* * schedule the timer to wake up every UCODE_TRACE_PERIOD milliseconds * to perform continuous uCode event logging operation if enabled */ #define UCODE_TRACE_PERIOD (100) /* * iwl_event_log: current uCode event log position * * @ucode_trace: enable/disable ucode continuous trace timer * @num_wraps: how many times the event buffer wraps * @next_entry: the entry just before the next one that uCode would fill * @non_wraps_count: counter for no wrap detected when dump ucode events * @wraps_once_count: counter for wrap once detected when dump ucode events * @wraps_more_count: counter for wrap more than once detected * when dump ucode events */ struct iwl_event_log { bool ucode_trace; u32 num_wraps; u32 next_entry; int non_wraps_count; int wraps_once_count; int wraps_more_count; }; /* * host interrupt timeout value * used with setting interrupt coalescing timer * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit * * default interrupt coalescing timer is 64 x 32 = 2048 usecs * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs */ #define IWL_HOST_INT_TIMEOUT_MAX (0xFF) #define IWL_HOST_INT_TIMEOUT_DEF (0x40) #define IWL_HOST_INT_TIMEOUT_MIN (0x0) #define IWL_HOST_INT_CALIB_TIMEOUT_MAX (0xFF) #define IWL_HOST_INT_CALIB_TIMEOUT_DEF (0x10) #define IWL_HOST_INT_CALIB_TIMEOUT_MIN (0x0) /* * This is the threshold value of plcp error rate per 100mSecs. It is * used to set and check for the validity of plcp_delta. */ #define IWL_MAX_PLCP_ERR_THRESHOLD_MIN (1) #define IWL_MAX_PLCP_ERR_THRESHOLD_DEF (50) #define IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF (100) #define IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF (200) #define IWL_MAX_PLCP_ERR_THRESHOLD_MAX (255) #define IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE (0) #define IWL_DELAY_NEXT_FORCE_RF_RESET (HZ*3) #define IWL_DELAY_NEXT_FORCE_FW_RELOAD (HZ*5) /* TX queue watchdog timeouts in mSecs */ #define IWL_DEF_WD_TIMEOUT (2000) #define IWL_LONG_WD_TIMEOUT (10000) #define IWL_MAX_WD_TIMEOUT (120000) /* BT Antenna Coupling Threshold (dB) */ #define IWL_BT_ANTENNA_COUPLING_THRESHOLD (35) /* Firmware reload counter and Timestamp */ #define IWL_MIN_RELOAD_DURATION 1000 /* 1000 ms */ #define IWL_MAX_CONTINUE_RELOAD_CNT 4 enum iwl_reset { IWL_RF_RESET = 0, IWL_FW_RESET, IWL_MAX_FORCE_RESET, }; struct iwl_force_reset { int reset_request_count; int reset_success_count; int reset_reject_count; unsigned long reset_duration; unsigned long last_force_reset_jiffies; }; /* extend beacon time format bit shifting */ /* * for _agn devices * bits 31:22 - extended * bits 21:0 - interval */ #define IWLAGN_EXT_BEACON_TIME_POS 22 /** * struct iwl_notification_wait - notification wait entry * @list: list head for global list * @fn: function called with the notification * @cmd: command ID * * This structure is not used directly, to wait for a * notification declare it on the stack, and call * iwlagn_init_notification_wait() with appropriate * parameters. Then do whatever will cause the ucode * to notify the driver, and to wait for that then * call iwlagn_wait_notification(). * * Each notification is one-shot. If at some point we * need to support multi-shot notifications (which * can't be allocated on the stack) we need to modify * the code for them. */ struct iwl_notification_wait { struct list_head list; void (*fn)(struct iwl_priv *priv, struct iwl_rx_packet *pkt, void *data); void *fn_data; u8 cmd; bool triggered, aborted; }; enum iwl_rxon_context_id { IWL_RXON_CTX_BSS, IWL_RXON_CTX_PAN, NUM_IWL_RXON_CTX }; struct iwl_rxon_context { struct ieee80211_vif *vif; const u8 *ac_to_fifo; const u8 *ac_to_queue; u8 mcast_queue; /* * We could use the vif to indicate active, but we * also need it to be active during disabling when * we already removed the vif for type setting. */ bool always_active, is_active; bool ht_need_multiple_chains; enum iwl_rxon_context_id ctxid; u32 interface_modes, exclusive_interface_modes; u8 unused_devtype, ap_devtype, ibss_devtype, station_devtype; /* * We declare this const so it can only be * changed via explicit cast within the * routines that actually update the physical * hardware. */ const struct iwl_rxon_cmd active; struct iwl_rxon_cmd staging; struct iwl_rxon_time_cmd timing; struct iwl_qos_info qos_data; u8 bcast_sta_id, ap_sta_id; u8 rxon_cmd, rxon_assoc_cmd, rxon_timing_cmd; u8 qos_cmd; u8 wep_key_cmd; struct iwl_wep_key wep_keys[WEP_KEYS_MAX]; u8 key_mapping_keys; __le32 station_flags; struct { bool non_gf_sta_present; u8 protection; bool enabled, is_40mhz; u8 extension_chan_offset; } ht; bool last_tx_rejected; }; enum iwl_scan_type { IWL_SCAN_NORMAL, IWL_SCAN_RADIO_RESET, IWL_SCAN_OFFCH_TX, }; enum iwlagn_ucode_type { IWL_UCODE_NONE, IWL_UCODE_REGULAR, IWL_UCODE_INIT, IWL_UCODE_WOWLAN, }; #ifdef CONFIG_IWLWIFI_DEVICE_SVTOOL struct iwl_testmode_trace { u32 buff_size; u32 total_size; u32 num_chunks; u8 *cpu_addr; u8 *trace_addr; dma_addr_t dma_addr; bool trace_enabled; }; #endif /* uCode ownership */ #define IWL_OWNERSHIP_DRIVER 0 #define IWL_OWNERSHIP_TM 1 struct iwl_priv { /* ieee device used by generic ieee processing code */ struct ieee80211_hw *hw; struct ieee80211_channel *ieee_channels; struct ieee80211_rate *ieee_rates; struct iwl_cfg *cfg; enum ieee80211_band band; void (*pre_rx_handler)(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb); void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb); struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS]; /* spectrum measurement report caching */ struct iwl_spectrum_notification measure_report; u8 measurement_status; /* ucode beacon time */ u32 ucode_beacon_time; int missed_beacon_threshold; /* track IBSS manager (last beacon) status */ u32 ibss_manager; /* jiffies when last recovery from statistics was performed */ unsigned long rx_statistics_jiffies; /* force reset */ struct iwl_force_reset force_reset[IWL_MAX_FORCE_RESET]; /* firmware reload counter and timestamp */ unsigned long reload_jiffies; int reload_count; /* we allocate array of iwl_channel_info for NIC's valid channels. * Access via channel # using indirect index array */ struct iwl_channel_info *channel_info; /* channel info array */ u8 channel_count; /* # of channels */ /* thermal calibration */ s32 temperature; /* degrees Kelvin */ s32 last_temperature; /* init calibration results */ struct iwl_calib_result calib_results[IWL_CALIB_MAX]; /* Scan related variables */ unsigned long scan_start; unsigned long scan_start_tsf; void *scan_cmd; enum ieee80211_band scan_band; struct cfg80211_scan_request *scan_request; struct ieee80211_vif *scan_vif; enum iwl_scan_type scan_type; u8 scan_tx_ant[IEEE80211_NUM_BANDS]; u8 mgmt_tx_ant; /* spinlock */ spinlock_t lock; /* protect general shared data */ spinlock_t hcmd_lock; /* protect hcmd */ spinlock_t reg_lock; /* protect hw register access */ struct mutex mutex; struct iwl_bus *bus; /* bus specific data */ struct iwl_trans trans; /* microcode/device supports multiple contexts */ u8 valid_contexts; /* command queue number */ u8 cmd_queue; /* max number of station keys */ u8 sta_key_max_num; bool new_scan_threshold_behaviour; /* EEPROM MAC addresses */ struct mac_address addresses[2]; /* uCode images, save to reload in case of failure */ int fw_index; /* firmware we're trying to load */ u32 ucode_ver; /* version of ucode, copy of iwl_ucode.ver */ /* uCode owner: default: IWL_OWNERSHIP_DRIVER */ u8 ucode_owner; struct fw_img ucode_rt; struct fw_img ucode_init; enum iwlagn_ucode_type ucode_type; u8 ucode_write_complete; /* the image write is complete */ char firmware_name[25]; struct iwl_rxon_context contexts[NUM_IWL_RXON_CTX]; __le16 switch_channel; struct { u32 error_event_table; u32 log_event_table; } device_pointers; u16 active_rate; u8 start_calib; struct iwl_sensitivity_data sensitivity_data; struct iwl_chain_noise_data chain_noise_data; bool enhance_sensitivity_table; __le16 sensitivity_tbl[HD_TABLE_SIZE]; __le16 enhance_sensitivity_tbl[ENHANCE_HD_TABLE_ENTRIES]; struct iwl_ht_config current_ht_config; /* Rate scaling data */ u8 retry_rate; wait_queue_head_t wait_command_queue; int activity_timer_active; /* Rx and Tx DMA processing queues */ struct iwl_rx_queue rxq; struct iwl_tx_queue *txq; unsigned long txq_ctx_active_msk; struct iwl_dma_ptr kw; /* keep warm address */ struct iwl_dma_ptr scd_bc_tbls; u32 scd_base_addr; /* scheduler sram base address */ unsigned long status; /* counts mgmt, ctl, and data packets */ struct traffic_stats tx_stats; struct traffic_stats rx_stats; /* counts interrupts */ struct isr_statistics isr_stats; struct iwl_power_mgr power_data; struct iwl_tt_mgmt thermal_throttle; /* station table variables */ /* Note: if lock and sta_lock are needed, lock must be acquired first */ spinlock_t sta_lock; int num_stations; struct iwl_station_entry stations[IWLAGN_STATION_COUNT]; unsigned long ucode_key_table; /* queue refcounts */ #define IWL_MAX_HW_QUEUES 32 unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)]; /* for each AC */ atomic_t queue_stop_count[4]; /* Indication if ieee80211_ops->open has been called */ u8 is_open; u8 mac80211_registered; /* eeprom -- this is in the card's little endian byte order */ u8 *eeprom; int nvm_device_type; struct iwl_eeprom_calib_info *calib_info; enum nl80211_iftype iw_mode; /* Last Rx'd beacon timestamp */ u64 timestamp; struct { __le32 flag; struct statistics_general_common common; struct statistics_rx_non_phy rx_non_phy; struct statistics_rx_phy rx_ofdm; struct statistics_rx_ht_phy rx_ofdm_ht; struct statistics_rx_phy rx_cck; struct statistics_tx tx; #ifdef CONFIG_IWLWIFI_DEBUGFS struct statistics_bt_activity bt_activity; __le32 num_bt_kills, accum_num_bt_kills; #endif } statistics; #ifdef CONFIG_IWLWIFI_DEBUGFS struct { struct statistics_general_common common; struct statistics_rx_non_phy rx_non_phy; struct statistics_rx_phy rx_ofdm; struct statistics_rx_ht_phy rx_ofdm_ht; struct statistics_rx_phy rx_cck; struct statistics_tx tx; struct statistics_bt_activity bt_activity; } accum_stats, delta_stats, max_delta_stats; #endif struct { /* INT ICT Table */ __le32 *ict_tbl; void *ict_tbl_vir; dma_addr_t ict_tbl_dma; dma_addr_t aligned_ict_tbl_dma; int ict_index; u32 inta; bool use_ict; /* * reporting the number of tids has AGG on. 0 means * no AGGREGATION */ u8 agg_tids_count; struct iwl_rx_phy_res last_phy_res; bool last_phy_res_valid; struct completion firmware_loading_complete; u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr; u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr; /* * chain noise reset and gain commands are the * two extra calibration commands follows the standard * phy calibration commands */ u8 phy_calib_chain_noise_reset_cmd; u8 phy_calib_chain_noise_gain_cmd; /* counts reply_tx error */ struct reply_tx_error_statistics reply_tx_stats; struct reply_agg_tx_error_statistics reply_agg_tx_stats; /* notification wait support */ struct list_head notif_waits; spinlock_t notif_wait_lock; wait_queue_head_t notif_waitq; /* remain-on-channel offload support */ struct ieee80211_channel *hw_roc_channel; struct delayed_work hw_roc_work; enum nl80211_channel_type hw_roc_chantype; int hw_roc_duration; bool hw_roc_setup; struct sk_buff *offchan_tx_skb; int offchan_tx_timeout; struct ieee80211_channel *offchan_tx_chan; } _agn; /* bt coex */ u8 bt_enable_flag; u8 bt_status; u8 bt_traffic_load, last_bt_traffic_load; bool bt_ch_announce; bool bt_full_concurrent; bool bt_ant_couple_ok; __le32 kill_ack_mask; __le32 kill_cts_mask; __le16 bt_valid; u16 bt_on_thresh; u16 bt_duration; u16 dynamic_frag_thresh; u8 bt_ci_compliance; struct work_struct bt_traffic_change_work; bool bt_enable_pspoll; struct iwl_rxon_context *cur_rssi_ctx; bool bt_is_sco; struct iwl_hw_params hw_params; u32 inta_mask; struct workqueue_struct *workqueue; struct work_struct restart; struct work_struct scan_completed; struct work_struct rx_replenish; struct work_struct abort_scan; struct work_struct beacon_update; struct iwl_rxon_context *beacon_ctx; struct sk_buff *beacon_skb; void *beacon_cmd; struct work_struct tt_work; struct work_struct ct_enter; struct work_struct ct_exit; struct work_struct start_internal_scan; struct work_struct tx_flush; struct work_struct bt_full_concurrency; struct work_struct bt_runtime_config; struct tasklet_struct irq_tasklet; struct delayed_work scan_check; /* TX Power */ s8 tx_power_user_lmt; s8 tx_power_device_lmt; s8 tx_power_lmt_in_half_dbm; /* max tx power in half-dBm format */ s8 tx_power_next; #ifdef CONFIG_IWLWIFI_DEBUG /* debugging info */ u32 debug_level; /* per device debugging will override global iwl_debug_level if set */ #endif /* CONFIG_IWLWIFI_DEBUG */ #ifdef CONFIG_IWLWIFI_DEBUGFS /* debugfs */ u16 tx_traffic_idx; u16 rx_traffic_idx; u8 *tx_traffic; u8 *rx_traffic; struct dentry *debugfs_dir; u32 dbgfs_sram_offset, dbgfs_sram_len; bool disable_ht40; #endif /* CONFIG_IWLWIFI_DEBUGFS */ struct work_struct txpower_work; u32 disable_sens_cal; u32 disable_chain_noise_cal; struct work_struct run_time_calib_work; struct timer_list statistics_periodic; struct timer_list ucode_trace; struct timer_list watchdog; struct iwl_event_log event_log; struct led_classdev led; unsigned long blink_on, blink_off; bool led_registered; #ifdef CONFIG_IWLWIFI_DEVICE_SVTOOL struct iwl_testmode_trace testmode_trace; #endif u32 tm_fixed_rate; }; /*iwl_priv */ static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id) { set_bit(txq_id, &priv->txq_ctx_active_msk); } static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id) { clear_bit(txq_id, &priv->txq_ctx_active_msk); } #ifdef CONFIG_IWLWIFI_DEBUG /* * iwl_get_debug_level: Return active debug level for device * * Using sysfs it is possible to set per device debug level. This debug * level will be used if set, otherwise the global debug level which can be * set via module parameter is used. */ static inline u32 iwl_get_debug_level(struct iwl_priv *priv) { if (priv->debug_level) return priv->debug_level; else return iwl_debug_level; } #else static inline u32 iwl_get_debug_level(struct iwl_priv *priv) { return iwl_debug_level; } #endif static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv, int txq_id, int idx) { if (priv->txq[txq_id].txb[idx].skb) return (struct ieee80211_hdr *)priv->txq[txq_id]. txb[idx].skb->data; return NULL; } static inline struct iwl_rxon_context * iwl_rxon_ctx_from_vif(struct ieee80211_vif *vif) { struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; return vif_priv->ctx; } #define for_each_context(priv, ctx) \ for (ctx = &priv->contexts[IWL_RXON_CTX_BSS]; \ ctx < &priv->contexts[NUM_IWL_RXON_CTX]; ctx++) \ if (priv->valid_contexts & BIT(ctx->ctxid)) static inline int iwl_is_associated_ctx(struct iwl_rxon_context *ctx) { return (ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0; } static inline int iwl_is_associated(struct iwl_priv *priv, enum iwl_rxon_context_id ctxid) { return iwl_is_associated_ctx(&priv->contexts[ctxid]); } static inline int iwl_is_any_associated(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; for_each_context(priv, ctx) if (iwl_is_associated_ctx(ctx)) return true; return false; } static inline int is_channel_valid(const struct iwl_channel_info *ch_info) { if (ch_info == NULL) return 0; return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0; } static inline int is_channel_radar(const struct iwl_channel_info *ch_info) { return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0; } static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info) { return ch_info->band == IEEE80211_BAND_5GHZ; } static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info) { return ch_info->band == IEEE80211_BAND_2GHZ; } static inline int is_channel_passive(const struct iwl_channel_info *ch) { return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0; } static inline int is_channel_ibss(const struct iwl_channel_info *ch) { return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0; } static inline void __iwl_free_pages(struct iwl_priv *priv, struct page *page) { __free_pages(page, priv->hw_params.rx_page_order); } static inline void iwl_free_pages(struct iwl_priv *priv, unsigned long page) { free_pages(page, priv->hw_params.rx_page_order); } #endif /* __iwl_dev_h__ */