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linux/drivers/net/wireless/iwlwifi/iwl-4965.h
Tomas Winkler e5472978ef iwlwifi: Fix synchronous host command 
This patch replaces static variable from send_cmd_sync
with flag in priv->status. It was used for reentrance protection
but clearly made it impossible to stuck more cards into the same machine

In addition it force check of return values of synchronous commands
commands that doesn't requires return value async commands have to be used

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Yi Zhu <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-01 17:13:19 -04:00

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/******************************************************************************
*
* Copyright(c) 2003 - 2008 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:
* James P. Ketrenos <ipw2100-admin@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
/*
* Please use this file (iwl-4965.h) for driver implementation definitions.
* Please use iwl-4965-commands.h for uCode API definitions.
* Please use iwl-4965-hw.h for hardware-related definitions.
*/
#ifndef __iwl_4965_h__
#define __iwl_4965_h__
#include <linux/pci.h> /* for struct pci_device_id */
#include <linux/kernel.h>
#include <net/ieee80211_radiotap.h>
/* Hardware specific file defines the PCI IDs table for that hardware module */
extern struct pci_device_id iwl4965_hw_card_ids[];
#define DRV_NAME "iwl4965"
#include "iwl-rfkill.h"
#include "iwl-eeprom.h"
#include "iwl-4965-hw.h"
#include "iwl-csr.h"
#include "iwl-prph.h"
#include "iwl-debug.h"
#include "iwl-led.h"
/* Change firmware file name, using "-" and incrementing number,
* *only* when uCode interface or architecture changes so that it
* is not compatible with earlier drivers.
* This number will also appear in << 8 position of 1st dword of uCode file */
#define IWL4965_UCODE_API "-1"
/* 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)
enum iwl4965_antenna {
IWL_ANTENNA_DIVERSITY,
IWL_ANTENNA_MAIN,
IWL_ANTENNA_AUX
};
/*
* 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 100U
#define DEFAULT_SHORT_RETRY_LIMIT 7U
#define DEFAULT_LONG_RETRY_LIMIT 4U
struct iwl4965_rx_mem_buffer {
dma_addr_t dma_addr;
struct sk_buff *skb;
struct list_head list;
};
/*
* Generic queue structure
*
* Contains common data for Rx and Tx queues
*/
struct iwl4965_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*/
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 */
} __attribute__ ((packed));
#define MAX_NUM_OF_TBS (20)
/* One for each TFD */
struct iwl4965_tx_info {
struct ieee80211_tx_status status;
struct sk_buff *skb[MAX_NUM_OF_TBS];
};
/**
* struct iwl4965_tx_queue - Tx Queue for DMA
* @q: generic Rx/Tx queue descriptor
* @bd: base of circular buffer of TFDs
* @cmd: array of command/Tx buffers
* @dma_addr_cmd: physical address of cmd/tx buffer array
* @txb: array of per-TFD driver data
* @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.
*/
struct iwl4965_tx_queue {
struct iwl4965_queue q;
struct iwl4965_tfd_frame *bd;
struct iwl_cmd *cmd;
dma_addr_t dma_addr_cmd;
struct iwl4965_tx_info *txb;
int need_update;
int sched_retry;
int active;
};
#define IWL_NUM_SCAN_RATES (2)
struct iwl4965_channel_tgd_info {
u8 type;
s8 max_power;
};
struct iwl4965_channel_tgh_info {
s64 last_radar_time;
};
/* current Tx power values to use, one for each rate for each channel.
* requested power is limited by:
* -- regulatory EEPROM limits for this channel
* -- hardware capabilities (clip-powers)
* -- spectrum management
* -- user preference (e.g. iwconfig)
* when requested power is set, base power index must also be set. */
struct iwl4965_channel_power_info {
struct iwl4965_tx_power tpc; /* actual radio and DSP gain settings */
s8 power_table_index; /* actual (compenst'd) index into gain table */
s8 base_power_index; /* gain index for power at factory temp. */
s8 requested_power; /* power (dBm) requested for this chnl/rate */
};
/* current scan Tx power values to use, one for each scan rate for each
* channel. */
struct iwl4965_scan_power_info {
struct iwl4965_tx_power tpc; /* actual radio and DSP gain settings */
s8 power_table_index; /* actual (compenst'd) index into gain table */
s8 requested_power; /* scan pwr (dBm) requested for chnl/rate */
};
/* For fat_extension_channel */
enum {
HT_IE_EXT_CHANNEL_NONE = 0,
HT_IE_EXT_CHANNEL_ABOVE,
HT_IE_EXT_CHANNEL_INVALID,
HT_IE_EXT_CHANNEL_BELOW,
HT_IE_EXT_CHANNEL_MAX
};
/*
* 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!
*/
#define IWL4965_MAX_RATE (33)
struct iwl_channel_info {
struct iwl4965_channel_tgd_info tgd;
struct iwl4965_channel_tgh_info tgh;
struct iwl4965_eeprom_channel eeprom; /* EEPROM regulatory limit */
struct iwl4965_eeprom_channel fat_eeprom; /* EEPROM regulatory limit for
* FAT 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;
/* Radio/DSP gain settings for each "normal" data Tx rate.
* These include, in addition to RF and DSP gain, a few fields for
* remembering/modifying gain settings (indexes). */
struct iwl4965_channel_power_info power_info[IWL4965_MAX_RATE];
/* FAT channel info */
s8 fat_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
s8 fat_curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) */
s8 fat_min_power; /* always 0 */
s8 fat_scan_power; /* (dBm) eeprom, direct scans, any rate */
u8 fat_flags; /* flags copied from EEPROM */
u8 fat_extension_channel; /* HT_IE_EXT_CHANNEL_* */
/* Radio/DSP gain settings for each scan rate, for directed scans. */
struct iwl4965_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
};
struct iwl4965_clip_group {
/* maximum power level to prevent clipping for each rate, derived by
* us from this band's saturation power in EEPROM */
const s8 clip_powers[IWL_MAX_RATES];
};
#include "iwl-4965-rs.h"
#define IWL_TX_FIFO_AC0 0
#define IWL_TX_FIFO_AC1 1
#define IWL_TX_FIFO_AC2 2
#define IWL_TX_FIFO_AC3 3
#define IWL_TX_FIFO_HCCA_1 5
#define IWL_TX_FIFO_HCCA_2 6
#define IWL_TX_FIFO_NONE 7
/* Minimum number of queues. MAX_NUM is defined in hw specific files */
#define IWL_MIN_NUM_QUEUES 4
/* Power management (not Tx power) structures */
struct iwl4965_power_vec_entry {
struct iwl4965_powertable_cmd cmd;
u8 no_dtim;
};
#define IWL_POWER_RANGE_0 (0)
#define IWL_POWER_RANGE_1 (1)
#define IWL_POWER_MODE_CAM 0x00 /* Continuously Aware Mode, always on */
#define IWL_POWER_INDEX_3 0x03
#define IWL_POWER_INDEX_5 0x05
#define IWL_POWER_AC 0x06
#define IWL_POWER_BATTERY 0x07
#define IWL_POWER_LIMIT 0x07
#define IWL_POWER_MASK 0x0F
#define IWL_POWER_ENABLED 0x10
#define IWL_POWER_LEVEL(x) ((x) & IWL_POWER_MASK)
struct iwl4965_power_mgr {
spinlock_t lock;
struct iwl4965_power_vec_entry pwr_range_0[IWL_POWER_AC];
struct iwl4965_power_vec_entry pwr_range_1[IWL_POWER_AC];
u8 active_index;
u32 dtim_val;
};
#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)
struct iwl4965_frame {
union {
struct ieee80211_hdr frame;
struct iwl4965_tx_beacon_cmd beacon;
u8 raw[IEEE80211_FRAME_LEN];
u8 cmd[360];
} u;
struct list_head list;
};
#define SEQ_TO_QUEUE(x) ((x >> 8) & 0xbf)
#define QUEUE_TO_SEQ(x) ((x & 0xbf) << 8)
#define SEQ_TO_INDEX(x) (x & 0xff)
#define INDEX_TO_SEQ(x) (x & 0xff)
#define SEQ_HUGE_FRAME (0x4000)
#define SEQ_RX_FRAME __constant_cpu_to_le16(0x8000)
#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_SIZE_NORMAL = 0, */
CMD_SIZE_HUGE = (1 << 0),
/* CMD_SYNC = 0, */
CMD_ASYNC = (1 << 1),
/* CMD_NO_SKB = 0, */
CMD_WANT_SKB = (1 << 2),
};
struct iwl_cmd;
struct iwl_priv;
struct iwl_cmd_meta {
struct iwl_cmd_meta *source;
union {
struct sk_buff *skb;
int (*callback)(struct iwl_priv *priv,
struct iwl_cmd *cmd, struct sk_buff *skb);
} __attribute__ ((packed)) u;
/* The CMD_SIZE_HUGE flag bit indicates that the command
* structure is stored at the end of the shared queue memory. */
u32 flags;
} __attribute__ ((packed));
/**
* struct iwl_cmd
*
* For allocation of the command and tx queues, this establishes the overall
* size of the largest command we send to uCode, except for a scan command
* (which is relatively huge; space is allocated separately).
*/
struct iwl_cmd {
struct iwl_cmd_meta meta; /* driver data */
struct iwl_cmd_header hdr; /* uCode API */
union {
struct iwl4965_addsta_cmd addsta;
struct iwl4965_led_cmd led;
u32 flags;
u8 val8;
u16 val16;
u32 val32;
struct iwl4965_bt_cmd bt;
struct iwl4965_rxon_time_cmd rxon_time;
struct iwl4965_powertable_cmd powertable;
struct iwl4965_qosparam_cmd qosparam;
struct iwl4965_tx_cmd tx;
struct iwl4965_tx_beacon_cmd tx_beacon;
struct iwl4965_rxon_assoc_cmd rxon_assoc;
u8 *indirect;
u8 payload[360];
} __attribute__ ((packed)) cmd;
} __attribute__ ((packed));
struct iwl_host_cmd {
u8 id;
u16 len;
struct iwl_cmd_meta meta;
const void *data;
};
#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_cmd) - \
sizeof(struct iwl_cmd_meta))
/*
* RX related structures and functions
*/
#define RX_FREE_BUFFERS 64
#define RX_LOW_WATERMARK 8
#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 iwl4965_rx_queue - Rx queue
* @processed: Internal index to last handled Rx packet
* @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
*
* NOTE: rx_free and rx_used are used as a FIFO for iwl4965_rx_mem_buffers
*/
struct iwl4965_rx_queue {
__le32 *bd;
dma_addr_t dma_addr;
struct iwl4965_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
struct iwl4965_rx_mem_buffer *queue[RX_QUEUE_SIZE];
u32 processed;
u32 read;
u32 write;
u32 free_count;
struct list_head rx_free;
struct list_head rx_used;
int need_update;
spinlock_t lock;
};
#define IWL_SUPPORTED_RATES_IE_LEN 8
#define SCAN_INTERVAL 100
#define MAX_A_CHANNELS 252
#define MIN_A_CHANNELS 7
#define MAX_B_CHANNELS 14
#define MIN_B_CHANNELS 1
#define STATUS_HCMD_ACTIVE 0 /* host command in progress */
#define STATUS_HCMD_SYNC_ACTIVE 1 /* sync host command in progress */
#define STATUS_INT_ENABLED 2
#define STATUS_RF_KILL_HW 3
#define STATUS_RF_KILL_SW 4
#define STATUS_INIT 5
#define STATUS_ALIVE 6
#define STATUS_READY 7
#define STATUS_TEMPERATURE 8
#define STATUS_GEO_CONFIGURED 9
#define STATUS_EXIT_PENDING 10
#define STATUS_IN_SUSPEND 11
#define STATUS_STATISTICS 12
#define STATUS_SCANNING 13
#define STATUS_SCAN_ABORTING 14
#define STATUS_SCAN_HW 15
#define STATUS_POWER_PMI 16
#define STATUS_FW_ERROR 17
#define STATUS_CONF_PENDING 18
#define MAX_TID_COUNT 9
#define IWL_INVALID_RATE 0xFF
#define IWL_INVALID_VALUE -1
#ifdef CONFIG_IWL4965_HT
/**
* struct iwl4965_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 iwl4965_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;
};
#endif /* CONFIG_IWL4965_HT */
struct iwl4965_tid_data {
u16 seq_number;
u16 tfds_in_queue;
#ifdef CONFIG_IWL4965_HT
struct iwl4965_ht_agg agg;
#endif /* CONFIG_IWL4965_HT */
};
struct iwl4965_hw_key {
enum ieee80211_key_alg alg;
int keylen;
struct ieee80211_key_conf *conf;
u8 key[32];
};
union iwl4965_ht_rate_supp {
u16 rates;
struct {
u8 siso_rate;
u8 mimo_rate;
};
};
#ifdef CONFIG_IWL4965_HT
#define CFG_HT_RX_AMPDU_FACTOR_DEF (0x3)
#define CFG_HT_MPDU_DENSITY_2USEC (0x5)
#define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
struct iwl_ht_info {
/* self configuration data */
u8 is_ht;
u8 supported_chan_width;
u16 tx_mimo_ps_mode;
u8 is_green_field;
u8 sgf; /* HT_SHORT_GI_* short guard interval */
u8 max_amsdu_size;
u8 ampdu_factor;
u8 mpdu_density;
u8 supp_mcs_set[16];
/* BSS related data */
u8 control_channel;
u8 extension_chan_offset;
u8 tx_chan_width;
u8 ht_protection;
u8 non_GF_STA_present;
};
#endif /*CONFIG_IWL4965_HT */
union iwl4965_qos_capabity {
struct {
u8 edca_count:4; /* bit 0-3 */
u8 q_ack:1; /* bit 4 */
u8 queue_request:1; /* bit 5 */
u8 txop_request:1; /* bit 6 */
u8 reserved:1; /* bit 7 */
} q_AP;
struct {
u8 acvo_APSD:1; /* bit 0 */
u8 acvi_APSD:1; /* bit 1 */
u8 ac_bk_APSD:1; /* bit 2 */
u8 ac_be_APSD:1; /* bit 3 */
u8 q_ack:1; /* bit 4 */
u8 max_len:2; /* bit 5-6 */
u8 more_data_ack:1; /* bit 7 */
} q_STA;
u8 val;
};
/* QoS structures */
struct iwl4965_qos_info {
int qos_enable;
int qos_active;
union iwl4965_qos_capabity qos_cap;
struct iwl4965_qosparam_cmd def_qos_parm;
};
#define STA_PS_STATUS_WAKE 0
#define STA_PS_STATUS_SLEEP 1
struct iwl4965_station_entry {
struct iwl4965_addsta_cmd sta;
struct iwl4965_tid_data tid[MAX_TID_COUNT];
u8 used;
u8 ps_status;
struct iwl4965_hw_key keyinfo;
};
/* 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 */
};
/* uCode file layout */
struct iwl4965_ucode {
__le32 ver; /* major/minor/subminor */
__le32 inst_size; /* bytes of runtime instructions */
__le32 data_size; /* bytes of runtime data */
__le32 init_size; /* bytes of initialization instructions */
__le32 init_data_size; /* bytes of initialization data */
__le32 boot_size; /* bytes of bootstrap instructions */
u8 data[0]; /* data in same order as "size" elements */
};
#define IWL_IBSS_MAC_HASH_SIZE 32
struct iwl4965_ibss_seq {
u8 mac[ETH_ALEN];
u16 seq_num;
u16 frag_num;
unsigned long packet_time;
struct list_head list;
};
/**
* struct iwl4965_driver_hw_info
* @max_txq_num: Max # Tx queues supported
* @tx_cmd_len: Size of Tx command (but not including frame itself)
* @tx_ant_num: Number of TX antennas
* @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
* @rx_buffer_size:
* @max_rxq_log: Log-base-2 of max_rxq_size
* @max_stations:
* @bcast_sta_id:
* @shared_virt: Pointer to driver/uCode shared Tx Byte Counts and Rx status
* @shared_phys: Physical Pointer to Tx Byte Counts and Rx status
*/
struct iwl4965_driver_hw_info {
u16 max_txq_num;
u16 tx_cmd_len;
u16 tx_ant_num;
u16 max_rxq_size;
u32 rx_buf_size;
u32 max_pkt_size;
u16 max_rxq_log;
u8 max_stations;
u8 bcast_sta_id;
void *shared_virt;
dma_addr_t shared_phys;
};
#define HT_SHORT_GI_20MHZ_ONLY (1 << 0)
#define HT_SHORT_GI_40MHZ_ONLY (1 << 1)
#define IWL_RX_HDR(x) ((struct iwl4965_rx_frame_hdr *)(\
x->u.rx_frame.stats.payload + \
x->u.rx_frame.stats.phy_count))
#define IWL_RX_END(x) ((struct iwl4965_rx_frame_end *)(\
IWL_RX_HDR(x)->payload + \
le16_to_cpu(IWL_RX_HDR(x)->len)))
#define IWL_RX_STATS(x) (&x->u.rx_frame.stats)
#define IWL_RX_DATA(x) (IWL_RX_HDR(x)->payload)
/******************************************************************************
*
* Functions implemented in iwl-base.c which are forward declared here
* for use by iwl-*.c
*
*****************************************************************************/
struct iwl4965_addsta_cmd;
extern int iwl4965_send_add_station(struct iwl_priv *priv,
struct iwl4965_addsta_cmd *sta, u8 flags);
extern u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr,
int is_ap, u8 flags, void *ht_data);
extern int iwl4965_is_network_packet(struct iwl_priv *priv,
struct ieee80211_hdr *header);
extern int iwl4965_power_init_handle(struct iwl_priv *priv);
extern void iwl4965_handle_data_packet_monitor(struct iwl_priv *priv,
struct iwl4965_rx_mem_buffer *rxb,
void *data, short len,
struct ieee80211_rx_status *stats,
u16 phy_flags);
extern int iwl4965_is_duplicate_packet(struct iwl_priv *priv,
struct ieee80211_hdr *header);
extern int iwl4965_rx_queue_alloc(struct iwl_priv *priv);
extern void iwl4965_rx_queue_reset(struct iwl_priv *priv,
struct iwl4965_rx_queue *rxq);
extern int iwl4965_calc_db_from_ratio(int sig_ratio);
extern int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm);
extern int iwl4965_tx_queue_init(struct iwl_priv *priv,
struct iwl4965_tx_queue *txq, int count, u32 id);
extern void iwl4965_rx_replenish(void *data);
extern void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq);
extern unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
const u8 *dest, int left);
extern int iwl4965_rx_queue_update_write_ptr(struct iwl_priv *priv,
struct iwl4965_rx_queue *q);
extern int iwl4965_send_statistics_request(struct iwl_priv *priv);
extern void iwl4965_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
u32 decrypt_res,
struct ieee80211_rx_status *stats);
extern __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr);
int iwl4965_init_geos(struct iwl_priv *priv);
void iwl4965_free_geos(struct iwl_priv *priv);
extern const u8 iwl4965_broadcast_addr[ETH_ALEN];
int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
/*
* Currently used by iwl-3945-rs... look at restructuring so that it doesn't
* call this... todo... fix that.
*/
extern u8 iwl4965_sync_station(struct iwl_priv *priv, int sta_id,
u16 tx_rate, u8 flags);
/******************************************************************************
*
* Functions implemented in iwl-[34]*.c which are forward declared here
* for use by iwl-base.c
*
* NOTE: The implementation of these functions are hardware specific
* which is why they are in the hardware specific files (vs. iwl-base.c)
*
* Naming convention --
* iwl4965_ <-- Its part of iwlwifi (should be changed to iwl4965_)
* iwl4965_hw_ <-- Hardware specific (implemented in iwl-XXXX.c by all HW)
* iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
* iwl4965_bg_ <-- Called from work queue context
* iwl4965_mac_ <-- mac80211 callback
*
****************************************************************************/
extern void iwl4965_hw_rx_handler_setup(struct iwl_priv *priv);
extern void iwl4965_hw_setup_deferred_work(struct iwl_priv *priv);
extern void iwl4965_hw_cancel_deferred_work(struct iwl_priv *priv);
extern int iwl4965_hw_rxq_stop(struct iwl_priv *priv);
extern int iwl4965_hw_set_hw_setting(struct iwl_priv *priv);
extern int iwl4965_hw_nic_init(struct iwl_priv *priv);
extern int iwl4965_hw_nic_stop_master(struct iwl_priv *priv);
extern void iwl4965_hw_txq_ctx_free(struct iwl_priv *priv);
extern void iwl4965_hw_txq_ctx_stop(struct iwl_priv *priv);
extern int iwl4965_hw_nic_reset(struct iwl_priv *priv);
extern int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd,
dma_addr_t addr, u16 len);
extern int iwl4965_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl4965_tx_queue *txq);
extern int iwl4965_hw_get_temperature(struct iwl_priv *priv);
extern int iwl4965_hw_tx_queue_init(struct iwl_priv *priv,
struct iwl4965_tx_queue *txq);
extern unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
struct iwl4965_frame *frame, u8 rate);
extern int iwl4965_hw_get_rx_read(struct iwl_priv *priv);
extern void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv,
struct iwl_cmd *cmd,
struct ieee80211_tx_control *ctrl,
struct ieee80211_hdr *hdr,
int sta_id, int tx_id);
extern int iwl4965_hw_reg_send_txpower(struct iwl_priv *priv);
extern int iwl4965_hw_reg_set_txpower(struct iwl_priv *priv, s8 power);
extern void iwl4965_hw_rx_statistics(struct iwl_priv *priv,
struct iwl4965_rx_mem_buffer *rxb);
extern void iwl4965_disable_events(struct iwl_priv *priv);
extern int iwl4965_get_temperature(const struct iwl_priv *priv);
/**
* iwl4965_hw_find_station - Find station id for a given BSSID
* @bssid: MAC address of station ID to find
*
* NOTE: This should not be hardware specific but the code has
* not yet been merged into a single common layer for managing the
* station tables.
*/
extern u8 iwl4965_hw_find_station(struct iwl_priv *priv, const u8 *bssid);
extern int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel);
extern int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
extern int iwl4965_queue_space(const struct iwl4965_queue *q);
struct iwl_priv;
extern void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio);
/*
* Forward declare iwl-4965.c functions for iwl-base.c
*/
extern int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv,
struct iwl4965_tx_queue *txq,
u16 byte_cnt);
extern void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr,
int is_ap);
extern void iwl4965_set_rxon_chain(struct iwl_priv *priv);
extern int iwl4965_alive_notify(struct iwl_priv *priv);
extern void iwl4965_update_rate_scaling(struct iwl_priv *priv, u8 mode);
extern void iwl4965_chain_noise_reset(struct iwl_priv *priv);
extern void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags,
u8 force);
extern void iwl4965_rf_kill_ct_config(struct iwl_priv *priv);
extern void iwl4965_hwrate_to_tx_control(struct iwl_priv *priv,
u32 rate_n_flags,
struct ieee80211_tx_control *control);
#ifdef CONFIG_IWL4965_HT
void iwl4965_init_ht_hw_capab(struct iwl_priv *priv,
struct ieee80211_ht_info *ht_info,
enum ieee80211_band band);
void iwl4965_set_rxon_ht(struct iwl_priv *priv,
struct iwl_ht_info *ht_info);
void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index,
struct ieee80211_ht_info *sta_ht_inf);
int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
enum ieee80211_ampdu_mlme_action action,
const u8 *addr, u16 tid, u16 *ssn);
int iwl4965_check_empty_hw_queue(struct iwl_priv *priv, int sta_id,
u8 tid, int txq_id);
#else
static inline void iwl4965_init_ht_hw_capab(struct iwl_priv *priv,
struct ieee80211_ht_info *ht_info,
enum ieee80211_band band) {}
#endif /*CONFIG_IWL4965_HT */
/* Structures, enum, and defines specific to the 4965 */
#define IWL4965_KW_SIZE 0x1000 /*4k */
struct iwl4965_kw {
dma_addr_t dma_addr;
void *v_addr;
size_t size;
};
#define IWL_CHANNEL_WIDTH_20MHZ 0
#define IWL_CHANNEL_WIDTH_40MHZ 1
#define IWL_MIMO_PS_STATIC 0
#define IWL_MIMO_PS_NONE 3
#define IWL_MIMO_PS_DYNAMIC 1
#define IWL_MIMO_PS_INVALID 2
#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_EXT_CHANNEL_OFFSET_NONE 0
#define IWL_EXT_CHANNEL_OFFSET_ABOVE 1
#define IWL_EXT_CHANNEL_OFFSET_RESERVE1 2
#define IWL_EXT_CHANNEL_OFFSET_BELOW 3
#define NRG_NUM_PREV_STAT_L 20
#define NUM_RX_CHAINS (3)
#define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
struct iwl4965_lq_mngr {
spinlock_t lock;
s32 max_window_size;
s32 *expected_tpt;
u8 *next_higher_rate;
u8 *next_lower_rate;
unsigned long stamp;
unsigned long stamp_last;
u32 flush_time;
u32 tx_packets;
u8 lq_ready;
};
/* Sensitivity and chain noise calibration */
#define INTERFERENCE_DATA_AVAILABLE __constant_cpu_to_le32(1)
#define INITIALIZATION_VALUE 0xFFFF
#define CAL_NUM_OF_BEACONS 20
#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 NRG_MIN_CCK 97
#define NRG_MAX_CCK 0
#define AUTO_CORR_MIN_OFDM 85
#define AUTO_CORR_MIN_OFDM_MRC 170
#define AUTO_CORR_MIN_OFDM_X1 105
#define AUTO_CORR_MIN_OFDM_MRC_X1 220
#define AUTO_CORR_MAX_OFDM 120
#define AUTO_CORR_MAX_OFDM_MRC 210
#define AUTO_CORR_MAX_OFDM_X1 140
#define AUTO_CORR_MAX_OFDM_MRC_X1 270
#define AUTO_CORR_STEP_OFDM 1
#define AUTO_CORR_MIN_CCK (125)
#define AUTO_CORR_MAX_CCK (200)
#define AUTO_CORR_MIN_CCK_MRC 200
#define AUTO_CORR_MAX_CCK_MRC 400
#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
enum iwl4965_false_alarm_state {
IWL_FA_TOO_MANY = 0,
IWL_FA_TOO_FEW = 1,
IWL_FA_GOOD_RANGE = 2,
};
enum iwl4965_chain_noise_state {
IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
IWL_CHAIN_NOISE_ACCUMULATE = 1,
IWL_CHAIN_NOISE_CALIBRATED = 2,
};
enum iwl4965_sensitivity_state {
IWL_SENS_CALIB_ALLOWED = 0,
IWL_SENS_CALIB_NEED_REINIT = 1,
};
enum iwl4965_calib_enabled_state {
IWL_CALIB_DISABLED = 0, /* must be 0 */
IWL_CALIB_ENABLED = 1,
};
struct statistics_general_data {
u32 beacon_silence_rssi_a;
u32 beacon_silence_rssi_b;
u32 beacon_silence_rssi_c;
u32 beacon_energy_a;
u32 beacon_energy_b;
u32 beacon_energy_c;
};
/* Sensitivity calib data */
struct iwl4965_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;
u8 state;
};
/* Chain noise (differential Rx gain) calib data */
struct iwl4965_chain_noise_data {
u8 state;
u16 beacon_count;
u32 chain_noise_a;
u32 chain_noise_b;
u32 chain_noise_c;
u32 chain_signal_a;
u32 chain_signal_b;
u32 chain_signal_c;
u8 disconn_array[NUM_RX_CHAINS];
u8 delta_gain_code[NUM_RX_CHAINS];
u8 radio_write;
};
#define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
#define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
enum {
MEASUREMENT_READY = (1 << 0),
MEASUREMENT_ACTIVE = (1 << 1),
};
#endif
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;
/* temporary frame storage list */
struct list_head free_frames;
int frames_count;
enum ieee80211_band band;
int alloc_rxb_skb;
bool add_radiotap;
void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
struct iwl4965_rx_mem_buffer *rxb);
struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
/* spectrum measurement report caching */
struct iwl4965_spectrum_notification measure_report;
u8 measurement_status;
#endif
/* ucode beacon time */
u32 ucode_beacon_time;
/* we allocate array of iwl4965_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 */
/* each calibration channel group in the EEPROM has a derived
* clip setting for each rate. */
const struct iwl4965_clip_group clip_groups[5];
/* thermal calibration */
s32 temperature; /* degrees Kelvin */
s32 last_temperature;
/* Scan related variables */
unsigned long last_scan_jiffies;
unsigned long next_scan_jiffies;
unsigned long scan_start;
unsigned long scan_pass_start;
unsigned long scan_start_tsf;
int scan_bands;
int one_direct_scan;
u8 direct_ssid_len;
u8 direct_ssid[IW_ESSID_MAX_SIZE];
struct iwl4965_scan_cmd *scan;
u8 only_active_channel;
/* spinlock */
spinlock_t lock; /* protect general shared data */
spinlock_t hcmd_lock; /* protect hcmd */
struct mutex mutex;
/* basic pci-network driver stuff */
struct pci_dev *pci_dev;
/* pci hardware address support */
void __iomem *hw_base;
/* uCode images, save to reload in case of failure */
struct fw_desc ucode_code; /* runtime inst */
struct fw_desc ucode_data; /* runtime data original */
struct fw_desc ucode_data_backup; /* runtime data save/restore */
struct fw_desc ucode_init; /* initialization inst */
struct fw_desc ucode_init_data; /* initialization data */
struct fw_desc ucode_boot; /* bootstrap inst */
struct iwl4965_rxon_time_cmd rxon_timing;
/* We declare this const so it can only be
* changed via explicit cast within the
* routines that actually update the physical
* hardware */
const struct iwl4965_rxon_cmd active_rxon;
struct iwl4965_rxon_cmd staging_rxon;
int error_recovering;
struct iwl4965_rxon_cmd recovery_rxon;
/* 1st responses from initialize and runtime uCode images.
* 4965's initialize alive response contains some calibration data. */
struct iwl4965_init_alive_resp card_alive_init;
struct iwl4965_alive_resp card_alive;
#ifdef CONFIG_IWLCORE_RFKILL
struct iwl_rfkill_mngr rfkill_mngr;
#endif
#ifdef CONFIG_IWL4965_LEDS
struct iwl4965_led led[IWL_LED_TRG_MAX];
unsigned long last_blink_time;
u8 last_blink_rate;
u8 allow_blinking;
u64 led_tpt;
#endif
u16 active_rate;
u16 active_rate_basic;
u8 call_post_assoc_from_beacon;
u8 assoc_station_added;
u8 use_ant_b_for_management_frame; /* Tx antenna selection */
u8 valid_antenna; /* Bit mask of antennas actually connected */
#ifdef CONFIG_IWL4965_SENSITIVITY
struct iwl4965_sensitivity_data sensitivity_data;
struct iwl4965_chain_noise_data chain_noise_data;
u8 start_calib;
__le16 sensitivity_tbl[HD_TABLE_SIZE];
#endif /*CONFIG_IWL4965_SENSITIVITY*/
#ifdef CONFIG_IWL4965_HT
struct iwl_ht_info current_ht_config;
#endif
u8 last_phy_res[100];
/* Rate scaling data */
struct iwl4965_lq_mngr lq_mngr;
/* Rate scaling data */
s8 data_retry_limit;
u8 retry_rate;
wait_queue_head_t wait_command_queue;
int activity_timer_active;
/* Rx and Tx DMA processing queues */
struct iwl4965_rx_queue rxq;
struct iwl4965_tx_queue txq[IWL_MAX_NUM_QUEUES];
unsigned long txq_ctx_active_msk;
struct iwl4965_kw kw; /* keep warm address */
u32 scd_base_addr; /* scheduler sram base address */
unsigned long status;
int last_rx_rssi; /* From Rx packet statisitics */
int last_rx_noise; /* From beacon statistics */
/* counts mgmt, ctl, and data packets */
struct traffic_stats {
u32 cnt;
u64 bytes;
} tx_stats[3], rx_stats[3];
struct iwl4965_power_mgr power_data;
struct iwl4965_notif_statistics statistics;
unsigned long last_statistics_time;
/* context information */
u8 essid[IW_ESSID_MAX_SIZE];
u8 essid_len;
u16 rates_mask;
u32 power_mode;
u32 antenna;
u8 bssid[ETH_ALEN];
u16 rts_threshold;
u8 mac_addr[ETH_ALEN];
/*station table variables */
spinlock_t sta_lock;
int num_stations;
struct iwl4965_station_entry stations[IWL_STATION_COUNT];
/* Indication if ieee80211_ops->open has been called */
u8 is_open;
u8 mac80211_registered;
u32 notif_missed_beacons;
/* Rx'd packet timing information */
u32 last_beacon_time;
u64 last_tsf;
/* Duplicate packet detection */
u16 last_seq_num;
u16 last_frag_num;
unsigned long last_packet_time;
/* Hash table for finding stations in IBSS network */
struct list_head ibss_mac_hash[IWL_IBSS_MAC_HASH_SIZE];
/* eeprom */
struct iwl4965_eeprom eeprom;
enum ieee80211_if_types iw_mode;
struct sk_buff *ibss_beacon;
/* Last Rx'd beacon timestamp */
u32 timestamp0;
u32 timestamp1;
u16 beacon_int;
struct iwl4965_driver_hw_info hw_setting;
struct ieee80211_vif *vif;
/* Current association information needed to configure the
* hardware */
u16 assoc_id;
u16 assoc_capability;
u8 ps_mode;
struct iwl4965_qos_info qos_data;
struct workqueue_struct *workqueue;
struct work_struct up;
struct work_struct restart;
struct work_struct calibrated_work;
struct work_struct scan_completed;
struct work_struct rx_replenish;
struct work_struct rf_kill;
struct work_struct abort_scan;
struct work_struct update_link_led;
struct work_struct auth_work;
struct work_struct report_work;
struct work_struct request_scan;
struct work_struct beacon_update;
struct tasklet_struct irq_tasklet;
struct delayed_work init_alive_start;
struct delayed_work alive_start;
struct delayed_work activity_timer;
struct delayed_work thermal_periodic;
struct delayed_work gather_stats;
struct delayed_work scan_check;
struct delayed_work post_associate;
#define IWL_DEFAULT_TX_POWER 0x0F
s8 user_txpower_limit;
s8 max_channel_txpower_limit;
#ifdef CONFIG_PM
u32 pm_state[16];
#endif
#ifdef CONFIG_IWLWIFI_DEBUG
/* debugging info */
u32 framecnt_to_us;
atomic_t restrict_refcnt;
#ifdef CONFIG_IWLWIFI_DEBUGFS
/* debugfs */
struct iwl_debugfs *dbgfs;
#endif /* CONFIG_IWLWIFI_DEBUGFS */
#endif /* CONFIG_IWLWIFI_DEBUG */
struct work_struct txpower_work;
#ifdef CONFIG_IWL4965_SENSITIVITY
struct work_struct sensitivity_work;
#endif
struct work_struct statistics_work;
struct timer_list statistics_periodic;
}; /*iwl_priv */
static inline int iwl4965_is_associated(struct iwl_priv *priv)
{
return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
}
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_narrow(const struct iwl_channel_info *ch_info)
{
return (ch_info->flags & EEPROM_CHANNEL_NARROW) ? 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;
}
extern const struct iwl_channel_info *iwl_get_channel_info(
const struct iwl_priv *priv, enum ieee80211_band band, u16 channel);
/* Requires full declaration of iwl_priv before including */
#endif /* __iwl4965_4965_h__ */
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