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gem5/arm/linux-arm-legacy/20150122/./drivers/net/wireless/ath/ath5k/ath5k.h
blob: 74bd54d6acebaeb2052d0184898a6b7e13f27a49 [file]
/*
* Copyright (c) 2004-2007 Reyk Floeter <reyk@openbsd.org>
* Copyright (c) 2006-2007 Nick Kossifidis <mickflemm@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _ATH5K_H
#define _ATH5K_H
/* TODO: Clean up channel debugging (doesn't work anyway) and start
* working on reg. control code using all available eeprom information
* (rev. engineering needed) */
#define CHAN_DEBUG 0
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/average.h>
#include <linux/leds.h>
#include <net/mac80211.h>
#include <net/cfg80211.h>
/* RX/TX descriptor hw structs
* TODO: Driver part should only see sw structs */
#include "desc.h"
/* EEPROM structs/offsets
* TODO: Make a more generic struct (eg. add more stuff to ath5k_capabilities)
* and clean up common bits, then introduce set/get functions in eeprom.c */
#include "eeprom.h"
#include "debug.h"
#include "../ath.h"
#include "ani.h"
/* PCI IDs */
#define PCI_DEVICE_ID_ATHEROS_AR5210 0x0007 /* AR5210 */
#define PCI_DEVICE_ID_ATHEROS_AR5311 0x0011 /* AR5311 */
#define PCI_DEVICE_ID_ATHEROS_AR5211 0x0012 /* AR5211 */
#define PCI_DEVICE_ID_ATHEROS_AR5212 0x0013 /* AR5212 */
#define PCI_DEVICE_ID_3COM_3CRDAG675 0x0013 /* 3CRDAG675 (Atheros AR5212) */
#define PCI_DEVICE_ID_3COM_2_3CRPAG175 0x0013 /* 3CRPAG175 (Atheros AR5212) */
#define PCI_DEVICE_ID_ATHEROS_AR5210_AP 0x0207 /* AR5210 (Early) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_IBM 0x1014 /* AR5212 (IBM MiniPCI) */
#define PCI_DEVICE_ID_ATHEROS_AR5210_DEFAULT 0x1107 /* AR5210 (no eeprom) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_DEFAULT 0x1113 /* AR5212 (no eeprom) */
#define PCI_DEVICE_ID_ATHEROS_AR5211_DEFAULT 0x1112 /* AR5211 (no eeprom) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_FPGA 0xf013 /* AR5212 (emulation board) */
#define PCI_DEVICE_ID_ATHEROS_AR5211_LEGACY 0xff12 /* AR5211 (emulation board) */
#define PCI_DEVICE_ID_ATHEROS_AR5211_FPGA11B 0xf11b /* AR5211 (emulation board) */
#define PCI_DEVICE_ID_ATHEROS_AR5312_REV2 0x0052 /* AR5312 WMAC (AP31) */
#define PCI_DEVICE_ID_ATHEROS_AR5312_REV7 0x0057 /* AR5312 WMAC (AP30-040) */
#define PCI_DEVICE_ID_ATHEROS_AR5312_REV8 0x0058 /* AR5312 WMAC (AP43-030) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0014 0x0014 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0015 0x0015 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0016 0x0016 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0017 0x0017 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0018 0x0018 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0019 0x0019 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR2413 0x001a /* AR2413 (Griffin-lite) */
#define PCI_DEVICE_ID_ATHEROS_AR5413 0x001b /* AR5413 (Eagle) */
#define PCI_DEVICE_ID_ATHEROS_AR5424 0x001c /* AR5424 (Condor PCI-E) */
#define PCI_DEVICE_ID_ATHEROS_AR5416 0x0023 /* AR5416 */
#define PCI_DEVICE_ID_ATHEROS_AR5418 0x0024 /* AR5418 */
/****************************\
GENERIC DRIVER DEFINITIONS
\****************************/
#define ATH5K_PRINTF(fmt, ...) \
pr_warn("%s: " fmt, __func__, ##__VA_ARGS__)
void __printf(3, 4)
_ath5k_printk(const struct ath5k_hw *ah, const char *level,
const char *fmt, ...);
#define ATH5K_PRINTK(_sc, _level, _fmt, ...) \
_ath5k_printk(_sc, _level, _fmt, ##__VA_ARGS__)
#define ATH5K_PRINTK_LIMIT(_sc, _level, _fmt, ...) \
do { \
if (net_ratelimit()) \
ATH5K_PRINTK(_sc, _level, _fmt, ##__VA_ARGS__); \
} while (0)
#define ATH5K_INFO(_sc, _fmt, ...) \
ATH5K_PRINTK(_sc, KERN_INFO, _fmt, ##__VA_ARGS__)
#define ATH5K_WARN(_sc, _fmt, ...) \
ATH5K_PRINTK_LIMIT(_sc, KERN_WARNING, _fmt, ##__VA_ARGS__)
#define ATH5K_ERR(_sc, _fmt, ...) \
ATH5K_PRINTK_LIMIT(_sc, KERN_ERR, _fmt, ##__VA_ARGS__)
/*
* AR5K REGISTER ACCESS
*/
/* Some macros to read/write fields */
/* First shift, then mask */
#define AR5K_REG_SM(_val, _flags) \
(((_val) << _flags##_S) & (_flags))
/* First mask, then shift */
#define AR5K_REG_MS(_val, _flags) \
(((_val) & (_flags)) >> _flags##_S)
/* Some registers can hold multiple values of interest. For this
* reason when we want to write to these registers we must first
* retrieve the values which we do not want to clear (lets call this
* old_data) and then set the register with this and our new_value:
* ( old_data | new_value) */
#define AR5K_REG_WRITE_BITS(ah, _reg, _flags, _val) \
ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) & ~(_flags)) | \
(((_val) << _flags##_S) & (_flags)), _reg)
#define AR5K_REG_MASKED_BITS(ah, _reg, _flags, _mask) \
ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) & \
(_mask)) | (_flags), _reg)
#define AR5K_REG_ENABLE_BITS(ah, _reg, _flags) \
ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) | (_flags), _reg)
#define AR5K_REG_DISABLE_BITS(ah, _reg, _flags) \
ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) & ~(_flags), _reg)
/* Access QCU registers per queue */
#define AR5K_REG_READ_Q(ah, _reg, _queue) \
(ath5k_hw_reg_read(ah, _reg) & (1 << _queue)) \
#define AR5K_REG_WRITE_Q(ah, _reg, _queue) \
ath5k_hw_reg_write(ah, (1 << _queue), _reg)
#define AR5K_Q_ENABLE_BITS(_reg, _queue) do { \
_reg |= 1 << _queue; \
} while (0)
#define AR5K_Q_DISABLE_BITS(_reg, _queue) do { \
_reg &= ~(1 << _queue); \
} while (0)
/* Used while writing initvals */
#define AR5K_REG_WAIT(_i) do { \
if (_i % 64) \
udelay(1); \
} while (0)
/*
* Some tunable values (these should be changeable by the user)
* TODO: Make use of them and add more options OR use debug/configfs
*/
#define AR5K_TUNE_DMA_BEACON_RESP 2
#define AR5K_TUNE_SW_BEACON_RESP 10
#define AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF 0
#define AR5K_TUNE_MIN_TX_FIFO_THRES 1
#define AR5K_TUNE_MAX_TX_FIFO_THRES ((IEEE80211_MAX_FRAME_LEN / 64) + 1)
#define AR5K_TUNE_REGISTER_TIMEOUT 20000
/* Register for RSSI threshold has a mask of 0xff, so 255 seems to
* be the max value. */
#define AR5K_TUNE_RSSI_THRES 129
/* This must be set when setting the RSSI threshold otherwise it can
* prevent a reset. If AR5K_RSSI_THR is read after writing to it
* the BMISS_THRES will be seen as 0, seems hardware doesn't keep
* track of it. Max value depends on hardware. For AR5210 this is just 7.
* For AR5211+ this seems to be up to 255. */
#define AR5K_TUNE_BMISS_THRES 7
#define AR5K_TUNE_REGISTER_DWELL_TIME 20000
#define AR5K_TUNE_BEACON_INTERVAL 100
#define AR5K_TUNE_AIFS 2
#define AR5K_TUNE_AIFS_11B 2
#define AR5K_TUNE_AIFS_XR 0
#define AR5K_TUNE_CWMIN 15
#define AR5K_TUNE_CWMIN_11B 31
#define AR5K_TUNE_CWMIN_XR 3
#define AR5K_TUNE_CWMAX 1023
#define AR5K_TUNE_CWMAX_11B 1023
#define AR5K_TUNE_CWMAX_XR 7
#define AR5K_TUNE_NOISE_FLOOR -72
#define AR5K_TUNE_CCA_MAX_GOOD_VALUE -95
#define AR5K_TUNE_MAX_TXPOWER 63
#define AR5K_TUNE_DEFAULT_TXPOWER 25
#define AR5K_TUNE_TPC_TXPOWER false
#define ATH5K_TUNE_CALIBRATION_INTERVAL_FULL 60000 /* 60 sec */
#define ATH5K_TUNE_CALIBRATION_INTERVAL_SHORT 10000 /* 10 sec */
#define ATH5K_TUNE_CALIBRATION_INTERVAL_ANI 1000 /* 1 sec */
#define ATH5K_TX_COMPLETE_POLL_INT 3000 /* 3 sec */
#define AR5K_INIT_CARR_SENSE_EN 1
/*Swap RX/TX Descriptor for big endian archs*/
#if defined(__BIG_ENDIAN)
#define AR5K_INIT_CFG ( \
AR5K_CFG_SWTD | AR5K_CFG_SWRD \
)
#else
#define AR5K_INIT_CFG 0x00000000
#endif
/* Initial values */
#define AR5K_INIT_CYCRSSI_THR1 2
/* Tx retry limit defaults from standard */
#define AR5K_INIT_RETRY_SHORT 7
#define AR5K_INIT_RETRY_LONG 4
/* Slot time */
#define AR5K_INIT_SLOT_TIME_TURBO 6
#define AR5K_INIT_SLOT_TIME_DEFAULT 9
#define AR5K_INIT_SLOT_TIME_HALF_RATE 13
#define AR5K_INIT_SLOT_TIME_QUARTER_RATE 21
#define AR5K_INIT_SLOT_TIME_B 20
#define AR5K_SLOT_TIME_MAX 0xffff
/* SIFS */
#define AR5K_INIT_SIFS_TURBO 6
#define AR5K_INIT_SIFS_DEFAULT_BG 10
#define AR5K_INIT_SIFS_DEFAULT_A 16
#define AR5K_INIT_SIFS_HALF_RATE 32
#define AR5K_INIT_SIFS_QUARTER_RATE 64
/* Used to calculate tx time for non 5/10/40MHz
* operation */
/* It's preamble time + signal time (16 + 4) */
#define AR5K_INIT_OFDM_PREAMPLE_TIME 20
/* Preamble time for 40MHz (turbo) operation (min ?) */
#define AR5K_INIT_OFDM_PREAMBLE_TIME_MIN 14
#define AR5K_INIT_OFDM_SYMBOL_TIME 4
#define AR5K_INIT_OFDM_PLCP_BITS 22
/* Rx latency for 5 and 10MHz operation (max ?) */
#define AR5K_INIT_RX_LAT_MAX 63
/* Tx latencies from initvals (5212 only but no problem
* because we only tweak them on 5212) */
#define AR5K_INIT_TX_LAT_A 54
#define AR5K_INIT_TX_LAT_BG 384
/* Tx latency for 40MHz (turbo) operation (min ?) */
#define AR5K_INIT_TX_LAT_MIN 32
/* Default Tx/Rx latencies (same for 5211)*/
#define AR5K_INIT_TX_LATENCY_5210 54
#define AR5K_INIT_RX_LATENCY_5210 29
/* Tx frame to Tx data start delay */
#define AR5K_INIT_TXF2TXD_START_DEFAULT 14
#define AR5K_INIT_TXF2TXD_START_DELAY_10MHZ 12
#define AR5K_INIT_TXF2TXD_START_DELAY_5MHZ 13
/* We need to increase PHY switch and agc settling time
* on turbo mode */
#define AR5K_SWITCH_SETTLING 5760
#define AR5K_SWITCH_SETTLING_TURBO 7168
#define AR5K_AGC_SETTLING 28
/* 38 on 5210 but shouldn't matter */
#define AR5K_AGC_SETTLING_TURBO 37
/*****************************\
* GENERIC CHIPSET DEFINITIONS *
\*****************************/
/**
* enum ath5k_version - MAC Chips
* @AR5K_AR5210: AR5210 (Crete)
* @AR5K_AR5211: AR5211 (Oahu/Maui)
* @AR5K_AR5212: AR5212 (Venice) and newer
*/
enum ath5k_version {
AR5K_AR5210 = 0,
AR5K_AR5211 = 1,
AR5K_AR5212 = 2,
};
/**
* enum ath5k_radio - PHY Chips
* @AR5K_RF5110: RF5110 (Fez)
* @AR5K_RF5111: RF5111 (Sombrero)
* @AR5K_RF5112: RF2112/5112(A) (Derby/Derby2)
* @AR5K_RF2413: RF2413/2414 (Griffin/Griffin-Lite)
* @AR5K_RF5413: RF5413/5414/5424 (Eagle/Condor)
* @AR5K_RF2316: RF2315/2316 (Cobra SoC)
* @AR5K_RF2317: RF2317 (Spider SoC)
* @AR5K_RF2425: RF2425/2417 (Swan/Nalla)
*/
enum ath5k_radio {
AR5K_RF5110 = 0,
AR5K_RF5111 = 1,
AR5K_RF5112 = 2,
AR5K_RF2413 = 3,
AR5K_RF5413 = 4,
AR5K_RF2316 = 5,
AR5K_RF2317 = 6,
AR5K_RF2425 = 7,
};
/*
* Common silicon revision/version values
*/
#define AR5K_SREV_UNKNOWN 0xffff
#define AR5K_SREV_AR5210 0x00 /* Crete */
#define AR5K_SREV_AR5311 0x10 /* Maui 1 */
#define AR5K_SREV_AR5311A 0x20 /* Maui 2 */
#define AR5K_SREV_AR5311B 0x30 /* Spirit */
#define AR5K_SREV_AR5211 0x40 /* Oahu */
#define AR5K_SREV_AR5212 0x50 /* Venice */
#define AR5K_SREV_AR5312_R2 0x52 /* AP31 */
#define AR5K_SREV_AR5212_V4 0x54 /* ??? */
#define AR5K_SREV_AR5213 0x55 /* ??? */
#define AR5K_SREV_AR5312_R7 0x57 /* AP30 */
#define AR5K_SREV_AR2313_R8 0x58 /* AP43 */
#define AR5K_SREV_AR5213A 0x59 /* Hainan */
#define AR5K_SREV_AR2413 0x78 /* Griffin lite */
#define AR5K_SREV_AR2414 0x70 /* Griffin */
#define AR5K_SREV_AR2315_R6 0x86 /* AP51-Light */
#define AR5K_SREV_AR2315_R7 0x87 /* AP51-Full */
#define AR5K_SREV_AR5424 0x90 /* Condor */
#define AR5K_SREV_AR2317_R1 0x90 /* AP61-Light */
#define AR5K_SREV_AR2317_R2 0x91 /* AP61-Full */
#define AR5K_SREV_AR5413 0xa4 /* Eagle lite */
#define AR5K_SREV_AR5414 0xa0 /* Eagle */
#define AR5K_SREV_AR2415 0xb0 /* Talon */
#define AR5K_SREV_AR5416 0xc0 /* PCI-E */
#define AR5K_SREV_AR5418 0xca /* PCI-E */
#define AR5K_SREV_AR2425 0xe0 /* Swan */
#define AR5K_SREV_AR2417 0xf0 /* Nala */
#define AR5K_SREV_RAD_5110 0x00
#define AR5K_SREV_RAD_5111 0x10
#define AR5K_SREV_RAD_5111A 0x15
#define AR5K_SREV_RAD_2111 0x20
#define AR5K_SREV_RAD_5112 0x30
#define AR5K_SREV_RAD_5112A 0x35
#define AR5K_SREV_RAD_5112B 0x36
#define AR5K_SREV_RAD_2112 0x40
#define AR5K_SREV_RAD_2112A 0x45
#define AR5K_SREV_RAD_2112B 0x46
#define AR5K_SREV_RAD_2413 0x50
#define AR5K_SREV_RAD_5413 0x60
#define AR5K_SREV_RAD_2316 0x70 /* Cobra SoC */
#define AR5K_SREV_RAD_2317 0x80
#define AR5K_SREV_RAD_5424 0xa0 /* Mostly same as 5413 */
#define AR5K_SREV_RAD_2425 0xa2
#define AR5K_SREV_RAD_5133 0xc0
#define AR5K_SREV_PHY_5211 0x30
#define AR5K_SREV_PHY_5212 0x41
#define AR5K_SREV_PHY_5212A 0x42
#define AR5K_SREV_PHY_5212B 0x43
#define AR5K_SREV_PHY_2413 0x45
#define AR5K_SREV_PHY_5413 0x61
#define AR5K_SREV_PHY_2425 0x70
/* TODO add support to mac80211 for vendor-specific rates and modes */
/**
* DOC: Atheros XR
*
* Some of this information is based on Documentation from:
*
* http://madwifi-project.org/wiki/ChipsetFeatures/SuperAG
*
* Atheros' eXtended Range - range enhancing extension is a modulation scheme
* that is supposed to double the link distance between an Atheros XR-enabled
* client device with an Atheros XR-enabled access point. This is achieved
* by increasing the receiver sensitivity up to, -105dBm, which is about 20dB
* above what the 802.11 specifications demand. In addition, new (proprietary)
* data rates are introduced: 3, 2, 1, 0.5 and 0.25 MBit/s.
*
* Please note that can you either use XR or TURBO but you cannot use both,
* they are exclusive.
*
* Also note that we do not plan to support XR mode at least for now. You can
* get a mode similar to XR by using 5MHz bwmode.
*/
/**
* DOC: Atheros SuperAG
*
* In addition to XR we have another modulation scheme called TURBO mode
* that is supposed to provide a throughput transmission speed up to 40Mbit/s
* -60Mbit/s at a 108Mbit/s signaling rate achieved through the bonding of two
* 54Mbit/s 802.11g channels. To use this feature both ends must support it.
* There is also a distinction between "static" and "dynamic" turbo modes:
*
* - Static: is the dumb version: devices set to this mode stick to it until
* the mode is turned off.
*
* - Dynamic: is the intelligent version, the network decides itself if it
* is ok to use turbo. As soon as traffic is detected on adjacent channels
* (which would get used in turbo mode), or when a non-turbo station joins
* the network, turbo mode won't be used until the situation changes again.
* Dynamic mode is achieved by Atheros' Adaptive Radio (AR) feature which
* monitors the used radio band in order to decide whether turbo mode may
* be used or not.
*
* This article claims Super G sticks to bonding of channels 5 and 6 for
* USA:
*
* http://www.pcworld.com/article/id,113428-page,1/article.html
*
* The channel bonding seems to be driver specific though.
*
* In addition to TURBO modes we also have the following features for even
* greater speed-up:
*
* - Bursting: allows multiple frames to be sent at once, rather than pausing
* after each frame. Bursting is a standards-compliant feature that can be
* used with any Access Point.
*
* - Fast frames: increases the amount of information that can be sent per
* frame, also resulting in a reduction of transmission overhead. It is a
* proprietary feature that needs to be supported by the Access Point.
*
* - Compression: data frames are compressed in real time using a Lempel Ziv
* algorithm. This is done transparently. Once this feature is enabled,
* compression and decompression takes place inside the chipset, without
* putting additional load on the host CPU.
*
* As with XR we also don't plan to support SuperAG features for now. You can
* get a mode similar to TURBO by using 40MHz bwmode.
*/
/**
* enum ath5k_driver_mode - PHY operation mode
* @AR5K_MODE_11A: 802.11a
* @AR5K_MODE_11B: 802.11b
* @AR5K_MODE_11G: 801.11g
* @AR5K_MODE_MAX: Used for boundary checks
*
* Do not change the order here, we use these as
* array indices and it also maps EEPROM structures.
*/
enum ath5k_driver_mode {
AR5K_MODE_11A = 0,
AR5K_MODE_11B = 1,
AR5K_MODE_11G = 2,
AR5K_MODE_MAX = 3
};
/**
* enum ath5k_ant_mode - Antenna operation mode
* @AR5K_ANTMODE_DEFAULT: Default antenna setup
* @AR5K_ANTMODE_FIXED_A: Only antenna A is present
* @AR5K_ANTMODE_FIXED_B: Only antenna B is present
* @AR5K_ANTMODE_SINGLE_AP: STA locked on a single ap
* @AR5K_ANTMODE_SECTOR_AP: AP with tx antenna set on tx desc
* @AR5K_ANTMODE_SECTOR_STA: STA with tx antenna set on tx desc
* @AR5K_ANTMODE_DEBUG: Debug mode -A -> Rx, B-> Tx-
* @AR5K_ANTMODE_MAX: Used for boundary checks
*
* For more infos on antenna control check out phy.c
*/
enum ath5k_ant_mode {
AR5K_ANTMODE_DEFAULT = 0,
AR5K_ANTMODE_FIXED_A = 1,
AR5K_ANTMODE_FIXED_B = 2,
AR5K_ANTMODE_SINGLE_AP = 3,
AR5K_ANTMODE_SECTOR_AP = 4,
AR5K_ANTMODE_SECTOR_STA = 5,
AR5K_ANTMODE_DEBUG = 6,
AR5K_ANTMODE_MAX,
};
/**
* enum ath5k_bw_mode - Bandwidth operation mode
* @AR5K_BWMODE_DEFAULT: 20MHz, default operation
* @AR5K_BWMODE_5MHZ: Quarter rate
* @AR5K_BWMODE_10MHZ: Half rate
* @AR5K_BWMODE_40MHZ: Turbo
*/
enum ath5k_bw_mode {
AR5K_BWMODE_DEFAULT = 0,
AR5K_BWMODE_5MHZ = 1,
AR5K_BWMODE_10MHZ = 2,
AR5K_BWMODE_40MHZ = 3
};
/****************\
TX DEFINITIONS
\****************/
/**
* struct ath5k_tx_status - TX Status descriptor
* @ts_seqnum: Sequence number
* @ts_tstamp: Timestamp
* @ts_status: Status code
* @ts_final_idx: Final transmission series index
* @ts_final_retry: Final retry count
* @ts_rssi: RSSI for received ACK
* @ts_shortretry: Short retry count
* @ts_virtcol: Virtual collision count
* @ts_antenna: Antenna used
*
* TX status descriptor gets filled by the hw
* on each transmission attempt.
*/
struct ath5k_tx_status {
u16 ts_seqnum;
u16 ts_tstamp;
u8 ts_status;
u8 ts_final_idx;
u8 ts_final_retry;
s8 ts_rssi;
u8 ts_shortretry;
u8 ts_virtcol;
u8 ts_antenna;
};
#define AR5K_TXSTAT_ALTRATE 0x80
#define AR5K_TXERR_XRETRY 0x01
#define AR5K_TXERR_FILT 0x02
#define AR5K_TXERR_FIFO 0x04
/**
* enum ath5k_tx_queue - Queue types used to classify tx queues.
* @AR5K_TX_QUEUE_INACTIVE: q is unused -- see ath5k_hw_release_tx_queue
* @AR5K_TX_QUEUE_DATA: A normal data queue
* @AR5K_TX_QUEUE_BEACON: The beacon queue
* @AR5K_TX_QUEUE_CAB: The after-beacon queue
* @AR5K_TX_QUEUE_UAPSD: Unscheduled Automatic Power Save Delivery queue
*/
enum ath5k_tx_queue {
AR5K_TX_QUEUE_INACTIVE = 0,
AR5K_TX_QUEUE_DATA,
AR5K_TX_QUEUE_BEACON,
AR5K_TX_QUEUE_CAB,
AR5K_TX_QUEUE_UAPSD,
};
#define AR5K_NUM_TX_QUEUES 10
#define AR5K_NUM_TX_QUEUES_NOQCU 2
/**
* enum ath5k_tx_queue_subtype - Queue sub-types to classify normal data queues
* @AR5K_WME_AC_BK: Background traffic
* @AR5K_WME_AC_BE: Best-effort (normal) traffic
* @AR5K_WME_AC_VI: Video traffic
* @AR5K_WME_AC_VO: Voice traffic
*
* These are the 4 Access Categories as defined in
* WME spec. 0 is the lowest priority and 4 is the
* highest. Normal data that hasn't been classified
* goes to the Best Effort AC.
*/
enum ath5k_tx_queue_subtype {
AR5K_WME_AC_BK = 0,
AR5K_WME_AC_BE,
AR5K_WME_AC_VI,
AR5K_WME_AC_VO,
};
/**
* enum ath5k_tx_queue_id - Queue ID numbers as returned by the hw functions
* @AR5K_TX_QUEUE_ID_NOQCU_DATA: Data queue on AR5210 (no QCU available)
* @AR5K_TX_QUEUE_ID_NOQCU_BEACON: Beacon queue on AR5210 (no QCU available)
* @AR5K_TX_QUEUE_ID_DATA_MIN: Data queue min index
* @AR5K_TX_QUEUE_ID_DATA_MAX: Data queue max index
* @AR5K_TX_QUEUE_ID_CAB: Content after beacon queue
* @AR5K_TX_QUEUE_ID_BEACON: Beacon queue
* @AR5K_TX_QUEUE_ID_UAPSD: Urgent Automatic Power Save Delivery,
*
* Each number represents a hw queue. If hw does not support hw queues
* (eg 5210) all data goes in one queue.
*/
enum ath5k_tx_queue_id {
AR5K_TX_QUEUE_ID_NOQCU_DATA = 0,
AR5K_TX_QUEUE_ID_NOQCU_BEACON = 1,
AR5K_TX_QUEUE_ID_DATA_MIN = 0,
AR5K_TX_QUEUE_ID_DATA_MAX = 3,
AR5K_TX_QUEUE_ID_UAPSD = 7,
AR5K_TX_QUEUE_ID_CAB = 8,
AR5K_TX_QUEUE_ID_BEACON = 9,
};
/*
* Flags to set hw queue's parameters...
*/
#define AR5K_TXQ_FLAG_TXOKINT_ENABLE 0x0001 /* Enable TXOK interrupt */
#define AR5K_TXQ_FLAG_TXERRINT_ENABLE 0x0002 /* Enable TXERR interrupt */
#define AR5K_TXQ_FLAG_TXEOLINT_ENABLE 0x0004 /* Enable TXEOL interrupt -not used- */
#define AR5K_TXQ_FLAG_TXDESCINT_ENABLE 0x0008 /* Enable TXDESC interrupt -not used- */
#define AR5K_TXQ_FLAG_TXURNINT_ENABLE 0x0010 /* Enable TXURN interrupt */
#define AR5K_TXQ_FLAG_CBRORNINT_ENABLE 0x0020 /* Enable CBRORN interrupt */
#define AR5K_TXQ_FLAG_CBRURNINT_ENABLE 0x0040 /* Enable CBRURN interrupt */
#define AR5K_TXQ_FLAG_QTRIGINT_ENABLE 0x0080 /* Enable QTRIG interrupt */
#define AR5K_TXQ_FLAG_TXNOFRMINT_ENABLE 0x0100 /* Enable TXNOFRM interrupt */
#define AR5K_TXQ_FLAG_BACKOFF_DISABLE 0x0200 /* Disable random post-backoff */
#define AR5K_TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE 0x0300 /* Enable ready time expiry policy (?)*/
#define AR5K_TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE 0x0800 /* Enable backoff while bursting */
#define AR5K_TXQ_FLAG_POST_FR_BKOFF_DIS 0x1000 /* Disable backoff while bursting */
#define AR5K_TXQ_FLAG_COMPRESSION_ENABLE 0x2000 /* Enable hw compression -not implemented-*/
/**
* struct ath5k_txq - Transmit queue state
* @qnum: Hardware q number
* @link: Link ptr in last TX desc
* @q: Transmit queue (&struct list_head)
* @lock: Lock on q and link
* @setup: Is the queue configured
* @txq_len:Number of queued buffers
* @txq_max: Max allowed num of queued buffers
* @txq_poll_mark: Used to check if queue got stuck
* @txq_stuck: Queue stuck counter
*
* One of these exists for each hardware transmit queue.
* Packets sent to us from above are assigned to queues based
* on their priority. Not all devices support a complete set
* of hardware transmit queues. For those devices the array
* sc_ac2q will map multiple priorities to fewer hardware queues
* (typically all to one hardware queue).
*/
struct ath5k_txq {
unsigned int qnum;
u32 *link;
struct list_head q;
spinlock_t lock;
bool setup;
int txq_len;
int txq_max;
bool txq_poll_mark;
unsigned int txq_stuck;
};
/**
* struct ath5k_txq_info - A struct to hold TX queue's parameters
* @tqi_type: One of enum ath5k_tx_queue
* @tqi_subtype: One of enum ath5k_tx_queue_subtype
* @tqi_flags: TX queue flags (see above)
* @tqi_aifs: Arbitrated Inter-frame Space
* @tqi_cw_min: Minimum Contention Window
* @tqi_cw_max: Maximum Contention Window
* @tqi_cbr_period: Constant bit rate period
* @tqi_ready_time: Time queue waits after an event when RDYTIME is enabled
*/
struct ath5k_txq_info {
enum ath5k_tx_queue tqi_type;
enum ath5k_tx_queue_subtype tqi_subtype;
u16 tqi_flags;
u8 tqi_aifs;
u16 tqi_cw_min;
u16 tqi_cw_max;
u32 tqi_cbr_period;
u32 tqi_cbr_overflow_limit;
u32 tqi_burst_time;
u32 tqi_ready_time;
};
/**
* enum ath5k_pkt_type - Transmit packet types
* @AR5K_PKT_TYPE_NORMAL: Normal data
* @AR5K_PKT_TYPE_ATIM: ATIM
* @AR5K_PKT_TYPE_PSPOLL: PS-Poll
* @AR5K_PKT_TYPE_BEACON: Beacon
* @AR5K_PKT_TYPE_PROBE_RESP: Probe response
* @AR5K_PKT_TYPE_PIFS: PIFS
* Used on tx control descriptor
*/
enum ath5k_pkt_type {
AR5K_PKT_TYPE_NORMAL = 0,
AR5K_PKT_TYPE_ATIM = 1,
AR5K_PKT_TYPE_PSPOLL = 2,
AR5K_PKT_TYPE_BEACON = 3,
AR5K_PKT_TYPE_PROBE_RESP = 4,
AR5K_PKT_TYPE_PIFS = 5,
};
/*
* TX power and TPC settings
*/
#define AR5K_TXPOWER_OFDM(_r, _v) ( \
((0 & 1) << ((_v) + 6)) | \
(((ah->ah_txpower.txp_rates_power_table[(_r)]) & 0x3f) << (_v)) \
)
#define AR5K_TXPOWER_CCK(_r, _v) ( \
(ah->ah_txpower.txp_rates_power_table[(_r)] & 0x3f) << (_v) \
)
/****************\
RX DEFINITIONS
\****************/
/**
* struct ath5k_rx_status - RX Status descriptor
* @rs_datalen: Data length
* @rs_tstamp: Timestamp
* @rs_status: Status code
* @rs_phyerr: PHY error mask
* @rs_rssi: RSSI in 0.5dbm units
* @rs_keyix: Index to the key used for decrypting
* @rs_rate: Rate used to decode the frame
* @rs_antenna: Antenna used to receive the frame
* @rs_more: Indicates this is a frame fragment (Fast frames)
*/
struct ath5k_rx_status {
u16 rs_datalen;
u16 rs_tstamp;
u8 rs_status;
u8 rs_phyerr;
s8 rs_rssi;
u8 rs_keyix;
u8 rs_rate;
u8 rs_antenna;
u8 rs_more;
};
#define AR5K_RXERR_CRC 0x01
#define AR5K_RXERR_PHY 0x02
#define AR5K_RXERR_FIFO 0x04
#define AR5K_RXERR_DECRYPT 0x08
#define AR5K_RXERR_MIC 0x10
#define AR5K_RXKEYIX_INVALID ((u8) -1)
#define AR5K_TXKEYIX_INVALID ((u32) -1)
/**************************\
BEACON TIMERS DEFINITIONS
\**************************/
#define AR5K_BEACON_PERIOD 0x0000ffff
#define AR5K_BEACON_ENA 0x00800000 /*enable beacon xmit*/
#define AR5K_BEACON_RESET_TSF 0x01000000 /*force a TSF reset*/
/*
* TSF to TU conversion:
*
* TSF is a 64bit value in usec (microseconds).
* TU is a 32bit value and defined by IEEE802.11 (page 6) as "A measurement of
* time equal to 1024 usec", so it's roughly milliseconds (usec / 1024).
*/
#define TSF_TO_TU(_tsf) (u32)((_tsf) >> 10)
/*******************************\
GAIN OPTIMIZATION DEFINITIONS
\*******************************/
/**
* enum ath5k_rfgain - RF Gain optimization engine state
* @AR5K_RFGAIN_INACTIVE: Engine disabled
* @AR5K_RFGAIN_ACTIVE: Probe active
* @AR5K_RFGAIN_READ_REQUESTED: Probe requested
* @AR5K_RFGAIN_NEED_CHANGE: Gain_F needs change
*/
enum ath5k_rfgain {
AR5K_RFGAIN_INACTIVE = 0,
AR5K_RFGAIN_ACTIVE,
AR5K_RFGAIN_READ_REQUESTED,
AR5K_RFGAIN_NEED_CHANGE,
};
/**
* struct ath5k_gain - RF Gain optimization engine state data
* @g_step_idx: Current step index
* @g_current: Current gain
* @g_target: Target gain
* @g_low: Low gain boundary
* @g_high: High gain boundary
* @g_f_corr: Gain_F correction
* @g_state: One of enum ath5k_rfgain
*/
struct ath5k_gain {
u8 g_step_idx;
u8 g_current;
u8 g_target;
u8 g_low;
u8 g_high;
u8 g_f_corr;
u8 g_state;
};
/********************\
COMMON DEFINITIONS
\********************/
#define AR5K_SLOT_TIME_9 396
#define AR5K_SLOT_TIME_20 880
#define AR5K_SLOT_TIME_MAX 0xffff
/**
* struct ath5k_athchan_2ghz - 2GHz to 5GHZ map for RF5111
* @a2_flags: Channel flags (internal)
* @a2_athchan: HW channel number (internal)
*
* This structure is used to map 2GHz channels to
* 5GHz Atheros channels on 2111 frequency converter
* that comes together with RF5111
* TODO: Clean up
*/
struct ath5k_athchan_2ghz {
u32 a2_flags;
u16 a2_athchan;
};
/**
* enum ath5k_dmasize - DMA size definitions (2^(n+2))
* @AR5K_DMASIZE_4B: 4Bytes
* @AR5K_DMASIZE_8B: 8Bytes
* @AR5K_DMASIZE_16B: 16Bytes
* @AR5K_DMASIZE_32B: 32Bytes
* @AR5K_DMASIZE_64B: 64Bytes (Default)
* @AR5K_DMASIZE_128B: 128Bytes
* @AR5K_DMASIZE_256B: 256Bytes
* @AR5K_DMASIZE_512B: 512Bytes
*
* These are used to set DMA burst size on hw
*
* Note: Some platforms can't handle more than 4Bytes
* be careful on embedded boards.
*/
enum ath5k_dmasize {
AR5K_DMASIZE_4B = 0,
AR5K_DMASIZE_8B,
AR5K_DMASIZE_16B,
AR5K_DMASIZE_32B,
AR5K_DMASIZE_64B,
AR5K_DMASIZE_128B,
AR5K_DMASIZE_256B,
AR5K_DMASIZE_512B
};
/******************\
RATE DEFINITIONS
\******************/
/**
* DOC: Rate codes
*
* Seems the ar5xxx hardware supports up to 32 rates, indexed by 1-32.
*
* The rate code is used to get the RX rate or set the TX rate on the
* hardware descriptors. It is also used for internal modulation control
* and settings.
*
* This is the hardware rate map we are aware of (html unfriendly):
*
* Rate code Rate (Kbps)
* --------- -----------
* 0x01 3000 (XR)
* 0x02 1000 (XR)
* 0x03 250 (XR)
* 0x04 - 05 -Reserved-
* 0x06 2000 (XR)
* 0x07 500 (XR)
* 0x08 48000 (OFDM)
* 0x09 24000 (OFDM)
* 0x0A 12000 (OFDM)
* 0x0B 6000 (OFDM)
* 0x0C 54000 (OFDM)
* 0x0D 36000 (OFDM)
* 0x0E 18000 (OFDM)
* 0x0F 9000 (OFDM)
* 0x10 - 17 -Reserved-
* 0x18 11000L (CCK)
* 0x19 5500L (CCK)
* 0x1A 2000L (CCK)
* 0x1B 1000L (CCK)
* 0x1C 11000S (CCK)
* 0x1D 5500S (CCK)
* 0x1E 2000S (CCK)
* 0x1F -Reserved-
*
* "S" indicates CCK rates with short preamble and "L" with long preamble.
*
* AR5211 has different rate codes for CCK (802.11B) rates. It only uses the
* lowest 4 bits, so they are the same as above with a 0xF mask.
* (0xB, 0xA, 0x9 and 0x8 for 1M, 2M, 5.5M and 11M).
* We handle this in ath5k_setup_bands().
*/
#define AR5K_MAX_RATES 32
/* B */
#define ATH5K_RATE_CODE_1M 0x1B
#define ATH5K_RATE_CODE_2M 0x1A
#define ATH5K_RATE_CODE_5_5M 0x19
#define ATH5K_RATE_CODE_11M 0x18
/* A and G */
#define ATH5K_RATE_CODE_6M 0x0B
#define ATH5K_RATE_CODE_9M 0x0F
#define ATH5K_RATE_CODE_12M 0x0A
#define ATH5K_RATE_CODE_18M 0x0E
#define ATH5K_RATE_CODE_24M 0x09
#define ATH5K_RATE_CODE_36M 0x0D
#define ATH5K_RATE_CODE_48M 0x08
#define ATH5K_RATE_CODE_54M 0x0C
/* Adding this flag to rate_code on B rates
* enables short preamble */
#define AR5K_SET_SHORT_PREAMBLE 0x04
/*
* Crypto definitions
*/
#define AR5K_KEYCACHE_SIZE 8
extern bool ath5k_modparam_nohwcrypt;
/***********************\
HW RELATED DEFINITIONS
\***********************/
/*
* Misc definitions
*/
#define AR5K_RSSI_EP_MULTIPLIER (1 << 7)
#define AR5K_ASSERT_ENTRY(_e, _s) do { \
if (_e >= _s) \
return false; \
} while (0)
/*
* Hardware interrupt abstraction
*/
/**
* enum ath5k_int - Hardware interrupt masks helpers
* @AR5K_INT_RXOK: Frame successfully received
* @AR5K_INT_RXDESC: Request RX descriptor/Read RX descriptor
* @AR5K_INT_RXERR: Frame reception failed
* @AR5K_INT_RXNOFRM: No frame received within a specified time period
* @AR5K_INT_RXEOL: Reached "End Of List", means we need more RX descriptors
* @AR5K_INT_RXORN: Indicates we got RX FIFO overrun. Note that Rx overrun is
* not always fatal, on some chips we can continue operation
* without resetting the card, that's why %AR5K_INT_FATAL is not
* common for all chips.
* @AR5K_INT_RX_ALL: Mask to identify all RX related interrupts
*
* @AR5K_INT_TXOK: Frame transmission success
* @AR5K_INT_TXDESC: Request TX descriptor/Read TX status descriptor
* @AR5K_INT_TXERR: Frame transmission failure
* @AR5K_INT_TXEOL: Received End Of List for VEOL (Virtual End Of List). The
* Queue Control Unit (QCU) signals an EOL interrupt only if a
* descriptor's LinkPtr is NULL. For more details, refer to:
* "http://www.freepatentsonline.com/20030225739.html"
* @AR5K_INT_TXNOFRM: No frame was transmitted within a specified time period
* @AR5K_INT_TXURN: Indicates we got TX FIFO underrun. In such case we should
* increase the TX trigger threshold.
* @AR5K_INT_TX_ALL: Mask to identify all TX related interrupts
*
* @AR5K_INT_MIB: Indicates the either Management Information Base counters or
* one of the PHY error counters reached the maximum value and
* should be read and cleared.
* @AR5K_INT_SWI: Software triggered interrupt.
* @AR5K_INT_RXPHY: RX PHY Error
* @AR5K_INT_RXKCM: RX Key cache miss
* @AR5K_INT_SWBA: SoftWare Beacon Alert - indicates its time to send a
* beacon that must be handled in software. The alternative is if
* you have VEOL support, in that case you let the hardware deal
* with things.
* @AR5K_INT_BRSSI: Beacon received with an RSSI value below our threshold
* @AR5K_INT_BMISS: If in STA mode this indicates we have stopped seeing
* beacons from the AP have associated with, we should probably
* try to reassociate. When in IBSS mode this might mean we have
* not received any beacons from any local stations. Note that
* every station in an IBSS schedules to send beacons at the
* Target Beacon Transmission Time (TBTT) with a random backoff.
* @AR5K_INT_BNR: Beacon queue got triggered (DMA beacon alert) while empty.
* @AR5K_INT_TIM: Beacon with local station's TIM bit set
* @AR5K_INT_DTIM: Beacon with DTIM bit and zero DTIM count received
* @AR5K_INT_DTIM_SYNC: DTIM sync lost
* @AR5K_INT_GPIO: GPIO interrupt is used for RF Kill switches connected to
* our GPIO pins.
* @AR5K_INT_BCN_TIMEOUT: Beacon timeout, we waited after TBTT but got noting
* @AR5K_INT_CAB_TIMEOUT: We waited for CAB traffic after the beacon but got
* nothing or an incomplete CAB frame sequence.
* @AR5K_INT_QCBRORN: A queue got it's CBR counter expired
* @AR5K_INT_QCBRURN: A queue got triggered wile empty
* @AR5K_INT_QTRIG: A queue got triggered
*
* @AR5K_INT_FATAL: Fatal errors were encountered, typically caused by bus/DMA
* errors. Indicates we need to reset the card.
* @AR5K_INT_GLOBAL: Used to clear and set the IER
* @AR5K_INT_NOCARD: Signals the card has been removed
* @AR5K_INT_COMMON: Common interrupts shared among MACs with the same
* bit value
*
* These are mapped to take advantage of some common bits
* between the MACs, to be able to set intr properties
* easier. Some of them are not used yet inside hw.c. Most map
* to the respective hw interrupt value as they are common among different
* MACs.
*/
enum ath5k_int {
AR5K_INT_RXOK = 0x00000001,
AR5K_INT_RXDESC = 0x00000002,
AR5K_INT_RXERR = 0x00000004,
AR5K_INT_RXNOFRM = 0x00000008,
AR5K_INT_RXEOL = 0x00000010,
AR5K_INT_RXORN = 0x00000020,
AR5K_INT_TXOK = 0x00000040,
AR5K_INT_TXDESC = 0x00000080,
AR5K_INT_TXERR = 0x00000100,
AR5K_INT_TXNOFRM = 0x00000200,
AR5K_INT_TXEOL = 0x00000400,
AR5K_INT_TXURN = 0x00000800,
AR5K_INT_MIB = 0x00001000,
AR5K_INT_SWI = 0x00002000,
AR5K_INT_RXPHY = 0x00004000,
AR5K_INT_RXKCM = 0x00008000,
AR5K_INT_SWBA = 0x00010000,
AR5K_INT_BRSSI = 0x00020000,
AR5K_INT_BMISS = 0x00040000,
AR5K_INT_FATAL = 0x00080000, /* Non common */
AR5K_INT_BNR = 0x00100000, /* Non common */
AR5K_INT_TIM = 0x00200000, /* Non common */
AR5K_INT_DTIM = 0x00400000, /* Non common */
AR5K_INT_DTIM_SYNC = 0x00800000, /* Non common */
AR5K_INT_GPIO = 0x01000000,
AR5K_INT_BCN_TIMEOUT = 0x02000000, /* Non common */
AR5K_INT_CAB_TIMEOUT = 0x04000000, /* Non common */
AR5K_INT_QCBRORN = 0x08000000, /* Non common */
AR5K_INT_QCBRURN = 0x10000000, /* Non common */
AR5K_INT_QTRIG = 0x20000000, /* Non common */
AR5K_INT_GLOBAL = 0x80000000,
AR5K_INT_TX_ALL = AR5K_INT_TXOK
| AR5K_INT_TXDESC
| AR5K_INT_TXERR
| AR5K_INT_TXNOFRM
| AR5K_INT_TXEOL
| AR5K_INT_TXURN,
AR5K_INT_RX_ALL = AR5K_INT_RXOK
| AR5K_INT_RXDESC
| AR5K_INT_RXERR
| AR5K_INT_RXNOFRM
| AR5K_INT_RXEOL
| AR5K_INT_RXORN,
AR5K_INT_COMMON = AR5K_INT_RXOK
| AR5K_INT_RXDESC
| AR5K_INT_RXERR
| AR5K_INT_RXNOFRM
| AR5K_INT_RXEOL
| AR5K_INT_RXORN
| AR5K_INT_TXOK
| AR5K_INT_TXDESC
| AR5K_INT_TXERR
| AR5K_INT_TXNOFRM
| AR5K_INT_TXEOL
| AR5K_INT_TXURN
| AR5K_INT_MIB
| AR5K_INT_SWI
| AR5K_INT_RXPHY
| AR5K_INT_RXKCM
| AR5K_INT_SWBA
| AR5K_INT_BRSSI
| AR5K_INT_BMISS
| AR5K_INT_GPIO
| AR5K_INT_GLOBAL,
AR5K_INT_NOCARD = 0xffffffff
};
/**
* enum ath5k_calibration_mask - Mask which calibration is active at the moment
* @AR5K_CALIBRATION_FULL: Full calibration (AGC + SHORT)
* @AR5K_CALIBRATION_SHORT: Short calibration (NF + I/Q)
* @AR5K_CALIBRATION_NF: Noise Floor calibration
* @AR5K_CALIBRATION_ANI: Adaptive Noise Immunity
*/
enum ath5k_calibration_mask {
AR5K_CALIBRATION_FULL = 0x01,
AR5K_CALIBRATION_SHORT = 0x02,
AR5K_CALIBRATION_NF = 0x04,
AR5K_CALIBRATION_ANI = 0x08,
};
/**
* enum ath5k_power_mode - Power management modes
* @AR5K_PM_UNDEFINED: Undefined
* @AR5K_PM_AUTO: Allow card to sleep if possible
* @AR5K_PM_AWAKE: Force card to wake up
* @AR5K_PM_FULL_SLEEP: Force card to full sleep (DANGEROUS)
* @AR5K_PM_NETWORK_SLEEP: Allow to sleep for a specified duration
*
* Currently only PM_AWAKE is used, FULL_SLEEP and NETWORK_SLEEP/AUTO
* are also known to have problems on some cards. This is not a big
* problem though because we can have almost the same effect as
* FULL_SLEEP by putting card on warm reset (it's almost powered down).
*/
enum ath5k_power_mode {
AR5K_PM_UNDEFINED = 0,
AR5K_PM_AUTO,
AR5K_PM_AWAKE,
AR5K_PM_FULL_SLEEP,
AR5K_PM_NETWORK_SLEEP,
};
/*
* These match net80211 definitions (not used in
* mac80211).
* TODO: Clean this up
*/
#define AR5K_LED_INIT 0 /*IEEE80211_S_INIT*/
#define AR5K_LED_SCAN 1 /*IEEE80211_S_SCAN*/
#define AR5K_LED_AUTH 2 /*IEEE80211_S_AUTH*/
#define AR5K_LED_ASSOC 3 /*IEEE80211_S_ASSOC*/
#define AR5K_LED_RUN 4 /*IEEE80211_S_RUN*/
/* GPIO-controlled software LED */
#define AR5K_SOFTLED_PIN 0
#define AR5K_SOFTLED_ON 0
#define AR5K_SOFTLED_OFF 1
/* XXX: we *may* move cap_range stuff to struct wiphy */
struct ath5k_capabilities {
/*
* Supported PHY modes
* (ie. AR5K_MODE_11A, AR5K_MODE_11B, ...)
*/
DECLARE_BITMAP(cap_mode, AR5K_MODE_MAX);
/*
* Frequency range (without regulation restrictions)
*/
struct {
u16 range_2ghz_min;
u16 range_2ghz_max;
u16 range_5ghz_min;
u16 range_5ghz_max;
} cap_range;
/*
* Values stored in the EEPROM (some of them...)
*/
struct ath5k_eeprom_info cap_eeprom;
/*
* Queue information
*/
struct {
u8 q_tx_num;
} cap_queues;
bool cap_has_phyerr_counters;
bool cap_has_mrr_support;
bool cap_needs_2GHz_ovr;
};
/* size of noise floor history (keep it a power of two) */
#define ATH5K_NF_CAL_HIST_MAX 8
struct ath5k_nfcal_hist {
s16 index; /* current index into nfval */
s16 nfval[ATH5K_NF_CAL_HIST_MAX]; /* last few noise floors */
};
#define ATH5K_LED_MAX_NAME_LEN 31
/*
* State for LED triggers
*/
struct ath5k_led {
char name[ATH5K_LED_MAX_NAME_LEN + 1]; /* name of the LED in sysfs */
struct ath5k_hw *ah; /* driver state */
struct led_classdev led_dev; /* led classdev */
};
/* Rfkill */
struct ath5k_rfkill {
/* GPIO PIN for rfkill */
u16 gpio;
/* polarity of rfkill GPIO PIN */
bool polarity;
/* RFKILL toggle tasklet */
struct tasklet_struct toggleq;
};
/* statistics */
struct ath5k_statistics {
/* antenna use */
unsigned int antenna_rx[5]; /* frames count per antenna RX */
unsigned int antenna_tx[5]; /* frames count per antenna TX */
/* frame errors */
unsigned int rx_all_count; /* all RX frames, including errors */
unsigned int tx_all_count; /* all TX frames, including errors */
unsigned int rx_bytes_count; /* all RX bytes, including errored pkts
* and the MAC headers for each packet
*/
unsigned int tx_bytes_count; /* all TX bytes, including errored pkts
* and the MAC headers and padding for
* each packet.
*/
unsigned int rxerr_crc;
unsigned int rxerr_phy;
unsigned int rxerr_phy_code[32];
unsigned int rxerr_fifo;
unsigned int rxerr_decrypt;
unsigned int rxerr_mic;
unsigned int rxerr_proc;
unsigned int rxerr_jumbo;
unsigned int txerr_retry;
unsigned int txerr_fifo;
unsigned int txerr_filt;
/* MIB counters */
unsigned int ack_fail;
unsigned int rts_fail;
unsigned int rts_ok;
unsigned int fcs_error;
unsigned int beacons;
unsigned int mib_intr;
unsigned int rxorn_intr;
unsigned int rxeol_intr;
};
/*
* Misc defines
*/
#define AR5K_MAX_GPIO 10
#define AR5K_MAX_RF_BANKS 8
#if CHAN_DEBUG
#define ATH_CHAN_MAX (26 + 26 + 26 + 200 + 200)
#else
#define ATH_CHAN_MAX (14 + 14 + 14 + 252 + 20)
#endif
#define ATH_RXBUF 40 /* number of RX buffers */
#define ATH_TXBUF 200 /* number of TX buffers */
#define ATH_BCBUF 4 /* number of beacon buffers */
#define ATH5K_TXQ_LEN_MAX (ATH_TXBUF / 4) /* bufs per queue */
#define ATH5K_TXQ_LEN_LOW (ATH5K_TXQ_LEN_MAX / 2) /* low mark */
/* Driver state associated with an instance of a device */
struct ath5k_hw {
struct ath_common common;
struct pci_dev *pdev;
struct device *dev; /* for dma mapping */
int irq;
u16 devid;
void __iomem *iobase; /* address of the device */
struct mutex lock; /* dev-level lock */
struct ieee80211_hw *hw; /* IEEE 802.11 common */
struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
struct ieee80211_channel channels[ATH_CHAN_MAX];
struct ieee80211_rate rates[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
s8 rate_idx[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
enum nl80211_iftype opmode;
#ifdef CONFIG_ATH5K_DEBUG
struct ath5k_dbg_info debug; /* debug info */
#endif /* CONFIG_ATH5K_DEBUG */
struct ath5k_buf *bufptr; /* allocated buffer ptr */
struct ath5k_desc *desc; /* TX/RX descriptors */
dma_addr_t desc_daddr; /* DMA (physical) address */
size_t desc_len; /* size of TX/RX descriptors */
DECLARE_BITMAP(status, 4);
#define ATH_STAT_INVALID 0 /* disable hardware accesses */
#define ATH_STAT_PROMISC 1
#define ATH_STAT_LEDSOFT 2 /* enable LED gpio status */
#define ATH_STAT_STARTED 3 /* opened & irqs enabled */
unsigned int filter_flags; /* HW flags, AR5K_RX_FILTER_* */
struct ieee80211_channel *curchan; /* current h/w channel */
u16 nvifs;
enum ath5k_int imask; /* interrupt mask copy */
spinlock_t irqlock;
bool rx_pending; /* rx tasklet pending */
bool tx_pending; /* tx tasklet pending */
u8 bssidmask[ETH_ALEN];
unsigned int led_pin, /* GPIO pin for driving LED */
led_on; /* pin setting for LED on */
struct work_struct reset_work; /* deferred chip reset */
struct work_struct calib_work; /* deferred phy calibration */
struct list_head rxbuf; /* receive buffer */
spinlock_t rxbuflock;
u32 *rxlink; /* link ptr in last RX desc */
struct tasklet_struct rxtq; /* rx intr tasklet */
struct ath5k_led rx_led; /* rx led */
struct list_head txbuf; /* transmit buffer */
spinlock_t txbuflock;
unsigned int txbuf_len; /* buf count in txbuf list */
struct ath5k_txq txqs[AR5K_NUM_TX_QUEUES]; /* tx queues */
struct tasklet_struct txtq; /* tx intr tasklet */
struct ath5k_led tx_led; /* tx led */
struct ath5k_rfkill rf_kill;
spinlock_t block; /* protects beacon */
struct tasklet_struct beacontq; /* beacon intr tasklet */
struct list_head bcbuf; /* beacon buffer */
struct ieee80211_vif *bslot[ATH_BCBUF];
u16 num_ap_vifs;
u16 num_adhoc_vifs;
u16 num_mesh_vifs;
unsigned int bhalq, /* SW q for outgoing beacons */
bmisscount, /* missed beacon transmits */
bintval, /* beacon interval in TU */
bsent;
unsigned int nexttbtt; /* next beacon time in TU */
struct ath5k_txq *cabq; /* content after beacon */
bool assoc; /* associate state */
bool enable_beacon; /* true if beacons are on */
struct ath5k_statistics stats;
struct ath5k_ani_state ani_state;
struct tasklet_struct ani_tasklet; /* ANI calibration */
struct delayed_work tx_complete_work;
struct survey_info survey; /* collected survey info */
enum ath5k_int ah_imr;
struct ieee80211_channel *ah_current_channel;
bool ah_iq_cal_needed;
bool ah_single_chip;
enum ath5k_version ah_version;
enum ath5k_radio ah_radio;
u32 ah_mac_srev;
u16 ah_mac_version;
u16 ah_phy_revision;
u16 ah_radio_5ghz_revision;
u16 ah_radio_2ghz_revision;
#define ah_modes ah_capabilities.cap_mode
#define ah_ee_version ah_capabilities.cap_eeprom.ee_version
u8 ah_retry_long;
u8 ah_retry_short;
u32 ah_use_32khz_clock;
u8 ah_coverage_class;
bool ah_ack_bitrate_high;
u8 ah_bwmode;
bool ah_short_slot;
/* Antenna Control */
u32 ah_ant_ctl[AR5K_EEPROM_N_MODES][AR5K_ANT_MAX];
u8 ah_ant_mode;
u8 ah_tx_ant;
u8 ah_def_ant;
struct ath5k_capabilities ah_capabilities;
struct ath5k_txq_info ah_txq[AR5K_NUM_TX_QUEUES];
u32 ah_txq_status;
u32 ah_txq_imr_txok;
u32 ah_txq_imr_txerr;
u32 ah_txq_imr_txurn;
u32 ah_txq_imr_txdesc;
u32 ah_txq_imr_txeol;
u32 ah_txq_imr_cbrorn;
u32 ah_txq_imr_cbrurn;
u32 ah_txq_imr_qtrig;
u32 ah_txq_imr_nofrm;
u32 ah_txq_isr_txok_all;
u32 ah_txq_isr_txurn;
u32 ah_txq_isr_qcborn;
u32 ah_txq_isr_qcburn;
u32 ah_txq_isr_qtrig;
u32 *ah_rf_banks;
size_t ah_rf_banks_size;
size_t ah_rf_regs_count;
struct ath5k_gain ah_gain;
u8 ah_offset[AR5K_MAX_RF_BANKS];
struct {
/* Temporary tables used for interpolation */
u8 tmpL[AR5K_EEPROM_N_PD_GAINS]
[AR5K_EEPROM_POWER_TABLE_SIZE];
u8 tmpR[AR5K_EEPROM_N_PD_GAINS]
[AR5K_EEPROM_POWER_TABLE_SIZE];
u8 txp_pd_table[AR5K_EEPROM_POWER_TABLE_SIZE * 2];
u16 txp_rates_power_table[AR5K_MAX_RATES];
u8 txp_min_idx;
bool txp_tpc;
/* Values in 0.25dB units */
s16 txp_min_pwr;
s16 txp_max_pwr;
s16 txp_cur_pwr;
/* Values in 0.5dB units */
s16 txp_offset;
s16 txp_ofdm;
s16 txp_cck_ofdm_gainf_delta;
/* Value in dB units */
s16 txp_cck_ofdm_pwr_delta;
bool txp_setup;
int txp_requested; /* Requested tx power in dBm */
} ah_txpower;
struct ath5k_nfcal_hist ah_nfcal_hist;
/* average beacon RSSI in our BSS (used by ANI) */
struct ewma ah_beacon_rssi_avg;
/* noise floor from last periodic calibration */
s32 ah_noise_floor;
/* Calibration timestamp */
unsigned long ah_cal_next_full;
unsigned long ah_cal_next_short;
unsigned long ah_cal_next_ani;
/* Calibration mask */
u8 ah_cal_mask;
/*
* Function pointers
*/
int (*ah_setup_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
unsigned int, unsigned int, int, enum ath5k_pkt_type,
unsigned int, unsigned int, unsigned int, unsigned int,
unsigned int, unsigned int, unsigned int, unsigned int);
int (*ah_proc_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
struct ath5k_tx_status *);
int (*ah_proc_rx_desc)(struct ath5k_hw *, struct ath5k_desc *,
struct ath5k_rx_status *);
};
struct ath_bus_ops {
enum ath_bus_type ath_bus_type;
void (*read_cachesize)(struct ath_common *common, int *csz);
bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
int (*eeprom_read_mac)(struct ath5k_hw *ah, u8 *mac);
};
/*
* Prototypes
*/
extern const struct ieee80211_ops ath5k_hw_ops;
/* Initialization and detach functions */
int ath5k_hw_init(struct ath5k_hw *ah);
void ath5k_hw_deinit(struct ath5k_hw *ah);
int ath5k_sysfs_register(struct ath5k_hw *ah);
void ath5k_sysfs_unregister(struct ath5k_hw *ah);
/*Chip id helper functions */
int ath5k_hw_read_srev(struct ath5k_hw *ah);
/* LED functions */
int ath5k_init_leds(struct ath5k_hw *ah);
void ath5k_led_enable(struct ath5k_hw *ah);
void ath5k_led_off(struct ath5k_hw *ah);
void ath5k_unregister_leds(struct ath5k_hw *ah);
/* Reset Functions */
int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, struct ieee80211_channel *channel);
int ath5k_hw_on_hold(struct ath5k_hw *ah);
int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
struct ieee80211_channel *channel, bool fast, bool skip_pcu);
int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val,
bool is_set);
/* Power management functions */
/* Clock rate related functions */
unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec);
unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock);
void ath5k_hw_set_clockrate(struct ath5k_hw *ah);
/* DMA Related Functions */
void ath5k_hw_start_rx_dma(struct ath5k_hw *ah);
u32 ath5k_hw_get_rxdp(struct ath5k_hw *ah);
int ath5k_hw_set_rxdp(struct ath5k_hw *ah, u32 phys_addr);
int ath5k_hw_start_tx_dma(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_stop_beacon_queue(struct ath5k_hw *ah, unsigned int queue);
u32 ath5k_hw_get_txdp(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_set_txdp(struct ath5k_hw *ah, unsigned int queue,
u32 phys_addr);
int ath5k_hw_update_tx_triglevel(struct ath5k_hw *ah, bool increase);
/* Interrupt handling */
bool ath5k_hw_is_intr_pending(struct ath5k_hw *ah);
int ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask);
enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum ath5k_int new_mask);
void ath5k_hw_update_mib_counters(struct ath5k_hw *ah);
/* Init/Stop functions */
void ath5k_hw_dma_init(struct ath5k_hw *ah);
int ath5k_hw_dma_stop(struct ath5k_hw *ah);
/* EEPROM access functions */
int ath5k_eeprom_init(struct ath5k_hw *ah);
void ath5k_eeprom_detach(struct ath5k_hw *ah);
int ath5k_eeprom_mode_from_channel(struct ath5k_hw *ah,
struct ieee80211_channel *channel);
/* Protocol Control Unit Functions */
/* Helpers */
int ath5k_hw_get_frame_duration(struct ath5k_hw *ah, enum ieee80211_band band,
int len, struct ieee80211_rate *rate, bool shortpre);
unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah);
unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah);
int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype opmode);
void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class);
/* RX filter control*/
int ath5k_hw_set_lladdr(struct ath5k_hw *ah, const u8 *mac);
void ath5k_hw_set_bssid(struct ath5k_hw *ah);
void ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask);
void ath5k_hw_set_mcast_filter(struct ath5k_hw *ah, u32 filter0, u32 filter1);
u32 ath5k_hw_get_rx_filter(struct ath5k_hw *ah);
void ath5k_hw_set_rx_filter(struct ath5k_hw *ah, u32 filter);
/* Receive (DRU) start/stop functions */
void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah);
void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah);
/* Beacon control functions */
u64 ath5k_hw_get_tsf64(struct ath5k_hw *ah);
void ath5k_hw_set_tsf64(struct ath5k_hw *ah, u64 tsf64);
void ath5k_hw_reset_tsf(struct ath5k_hw *ah);
void ath5k_hw_init_beacon_timers(struct ath5k_hw *ah, u32 next_beacon,
u32 interval);
bool ath5k_hw_check_beacon_timers(struct ath5k_hw *ah, int intval);
/* Init function */
void ath5k_hw_pcu_init(struct ath5k_hw *ah, enum nl80211_iftype op_mode);
/* Queue Control Unit, DFS Control Unit Functions */
int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue,
struct ath5k_txq_info *queue_info);
int ath5k_hw_set_tx_queueprops(struct ath5k_hw *ah, int queue,
const struct ath5k_txq_info *queue_info);
int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah,
enum ath5k_tx_queue queue_type,
struct ath5k_txq_info *queue_info);
void ath5k_hw_set_tx_retry_limits(struct ath5k_hw *ah,
unsigned int queue);
u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue);
void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_set_ifs_intervals(struct ath5k_hw *ah, unsigned int slot_time);
/* Init function */
int ath5k_hw_init_queues(struct ath5k_hw *ah);
/* Hardware Descriptor Functions */
int ath5k_hw_init_desc_functions(struct ath5k_hw *ah);
int ath5k_hw_setup_rx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
u32 size, unsigned int flags);
int ath5k_hw_setup_mrr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
unsigned int tx_rate1, u_int tx_tries1, u_int tx_rate2,
u_int tx_tries2, unsigned int tx_rate3, u_int tx_tries3);
/* GPIO Functions */
void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state);
int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio);
int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio);
u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio);
int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val);
void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio,
u32 interrupt_level);
/* RFkill Functions */
void ath5k_rfkill_hw_start(struct ath5k_hw *ah);
void ath5k_rfkill_hw_stop(struct ath5k_hw *ah);
/* Misc functions TODO: Cleanup */
int ath5k_hw_set_capabilities(struct ath5k_hw *ah);
int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid, u16 assoc_id);
int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);
/* Initial register settings functions */
int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);
/* PHY functions */
/* Misc PHY functions */
u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, enum ieee80211_band band);
int ath5k_hw_phy_disable(struct ath5k_hw *ah);
/* Gain_F optimization */
enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah);
int ath5k_hw_rfgain_opt_init(struct ath5k_hw *ah);
/* PHY/RF channel functions */
bool ath5k_channel_ok(struct ath5k_hw *ah, struct ieee80211_channel *channel);
/* PHY calibration */
void ath5k_hw_init_nfcal_hist(struct ath5k_hw *ah);
int ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
struct ieee80211_channel *channel);
void ath5k_hw_update_noise_floor(struct ath5k_hw *ah);
/* Spur mitigation */
bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
struct ieee80211_channel *channel);
/* Antenna control */
void ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode);
void ath5k_hw_set_antenna_switch(struct ath5k_hw *ah, u8 ee_mode);
/* TX power setup */
int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower);
/* Init function */
int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
u8 mode, bool fast);
/*
* Functions used internally
*/
static inline struct ath_common *ath5k_hw_common(struct ath5k_hw *ah)
{
return &ah->common;
}
static inline struct ath_regulatory *ath5k_hw_regulatory(struct ath5k_hw *ah)
{
return &(ath5k_hw_common(ah)->regulatory);
}
#ifdef CONFIG_ATHEROS_AR231X
#define AR5K_AR2315_PCI_BASE ((void __iomem *)0xb0100000)
static inline void __iomem *ath5k_ahb_reg(struct ath5k_hw *ah, u16 reg)
{
/* On AR2315 and AR2317 the PCI clock domain registers
* are outside of the WMAC register space */
if (unlikely((reg >= 0x4000) && (reg < 0x5000) &&
(ah->ah_mac_srev >= AR5K_SREV_AR2315_R6)))
return AR5K_AR2315_PCI_BASE + reg;
return ah->iobase + reg;
}
static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
{
return ioread32(ath5k_ahb_reg(ah, reg));
}
static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
{
iowrite32(val, ath5k_ahb_reg(ah, reg));
}
#else
static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
{
return ioread32(ah->iobase + reg);
}
static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
{
iowrite32(val, ah->iobase + reg);
}
#endif
static inline enum ath_bus_type ath5k_get_bus_type(struct ath5k_hw *ah)
{
return ath5k_hw_common(ah)->bus_ops->ath_bus_type;
}
static inline void ath5k_read_cachesize(struct ath_common *common, int *csz)
{
common->bus_ops->read_cachesize(common, csz);
}
static inline bool ath5k_hw_nvram_read(struct ath5k_hw *ah, u32 off, u16 *data)
{
struct ath_common *common = ath5k_hw_common(ah);
return common->bus_ops->eeprom_read(common, off, data);
}
static inline u32 ath5k_hw_bitswap(u32 val, unsigned int bits)
{
u32 retval = 0, bit, i;
for (i = 0; i < bits; i++) {
bit = (val >> i) & 1;
retval = (retval << 1) | bit;
}
return retval;
}
#endif