/*
* Copyright (c) 2008-2009 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or 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 ATH_H
#define ATH_H
#include <linux/skbuff.h>
#include <linux/if_ether.h>
#include <linux/spinlock.h>
#include <net/mac80211.h>
/*
* The key cache is used for h/w cipher state and also for
* tracking station state such as the current tx antenna.
* We also setup a mapping table between key cache slot indices
* and station state to short-circuit node lookups on rx.
* Different parts have different size key caches. We handle
* up to ATH_KEYMAX entries (could dynamically allocate state).
*/
#define ATH_KEYMAX 128 /* max key cache size we handle */
static const u8 ath_bcast_mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
struct ath_ani {
bool caldone;
unsigned int longcal_timer;
unsigned int shortcal_timer;
unsigned int resetcal_timer;
unsigned int checkani_timer;
struct timer_list timer;
};
struct ath_cycle_counters {
u32 cycles;
u32 rx_busy;
u32 rx_frame;
u32 tx_frame;
};
enum ath_device_state {
ATH_HW_UNAVAILABLE,
ATH_HW_INITIALIZED,
};
enum ath_bus_type {
ATH_PCI,
ATH_AHB,
ATH_USB,
};
struct reg_dmn_pair_mapping {
u16 regDmnEnum;
u16 reg_5ghz_ctl;
u16 reg_2ghz_ctl;
};
struct ath_regulatory {
char alpha2[2];
u16 country_code;
u16 max_power_level;
u32 tp_scale;
u16 current_rd;
u16 current_rd_ext;
int16_t power_limit;
struct reg_dmn_pair_mapping *regpair;
};
enum ath_crypt_caps {
ATH_CRYPT_CAP_CIPHER_AESCCM = BIT(0),
ATH_CRYPT_CAP_MIC_COMBINED = BIT(1),
};
struct ath_keyval {
u8 kv_type;
u8 kv_pad;
u16 kv_len;
u8 kv_val[16]; /* TK */
u8 kv_mic[8]; /* Michael MIC key */
u8 kv_txmic[8]; /* Michael MIC TX key (used only if the hardware
* supports both MIC keys in the same key cache entry;
* in that case, kv_mic is the RX key) */
};
enum ath_cipher {
ATH_CIPHER_WEP = 0,
ATH_CIPHER_AES_OCB = 1,
ATH_CIPHER_AES_CCM = 2,
ATH_CIPHER_CKIP = 3,
ATH_CIPHER_TKIP = 4,
ATH_CIPHER_CLR = 5,
ATH_CIPHER_MIC = 127
};
/**
* struct ath_ops - Register read/write operations
*
* @read: Register read
* @multi_read: Multiple register read
* @write: Register write
* @enable_write_buffer: Enable multiple register writes
* @write_flush: flush buffered register writes and disable buffering
*/
struct ath_ops {
unsigned int (*read)(void *, u32 reg_offset);
void (*multi_read)(void *, u32 *addr, u32 *val, u16 count);
void (*write)(void *, u32 val, u32 reg_offset);
void (*enable_write_buffer)(void *);
void (*write_flush) (void *);
u32 (*rmw)(void *, u32 reg_offset, u32 set, u32 clr);
};
struct ath_common;
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);
void (*bt_coex_prep)(struct ath_common *common);
void (*extn_synch_en)(struct ath_common *common);
};
struct ath_common {
void *ah;
void *priv;
struct ieee80211_hw *hw;
int debug_mask;
enum ath_device_state state;
struct ath_ani ani;
u16 cachelsz;
u16 curaid;
u8 macaddr[ETH_ALEN];
u8 curbssid[ETH_ALEN];
u8 bssidmask[ETH_ALEN];
u8 tx_chainmask;
u8 rx_chainmask;
u32 rx_bufsize;
u32 keymax;
DECLARE_BITMAP(keymap, ATH_KEYMAX);
DECLARE_BITMAP(tkip_keymap, ATH_KEYMAX);
enum ath_crypt_caps crypt_caps;
unsigned int clockrate;
spinlock_t cc_lock;
struct ath_cycle_counters cc_ani;
struct ath_cycle_counters cc_survey;
struct ath_regulatory regulatory;
const struct ath_ops *ops;
const struct ath_bus_ops *bus_ops;
bool btcoex_enabled;
};
struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
u32 len,
gfp_t gfp_mask);
void ath_hw_setbssidmask(struct ath_common *common);
void ath_key_delete(struct ath_common *common, struct ieee80211_key_conf *key);
int ath_key_config(struct ath_common *common,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key);
bool ath_hw_keyreset(struct ath_common *common, u16 entry);
void ath_hw_cycle_counters_update(struct ath_common *common);
int32_t ath_hw_get_listen_time(struct ath_common *common);
extern __attribute__ ((format (printf, 3, 4))) int
ath_printk(const char *level, struct ath_common *common, const char *fmt, ...);
#define ath_emerg(common, fmt, ...) \
ath_printk(KERN_EMERG, common, fmt, ##__VA_ARGS__)
#define ath_alert(common, fmt, ...) \
ath_printk(KERN_ALERT, common, fmt, ##__VA_ARGS__)
#define ath_crit(common, fmt, ...) \
ath_printk(KERN_CRIT, common, fmt, ##__VA_ARGS__)
#define ath_err(common, fmt, ...) \
ath_printk(KERN_ERR, common, fmt, ##__VA_ARGS__)
#define ath_warn(common, fmt, ...) \
ath_printk(KERN_WARNING, common, fmt, ##__VA_ARGS__)
#define ath_notice(common, fmt, ...) \
ath_printk(KERN_NOTICE, common, fmt, ##__VA_ARGS__)
#define ath_info(common, fmt, ...) \
ath_printk(KERN_INFO, common, fmt, ##__VA_ARGS__)
/**
* enum ath_debug_level - atheros wireless debug level
*
* @ATH_DBG_RESET: reset processing
* @ATH_DBG_QUEUE: hardware queue management
* @ATH_DBG_EEPROM: eeprom processing
* @ATH_DBG_CALIBRATE: periodic calibration
* @ATH_DBG_INTERRUPT: interrupt processing
* @ATH_DBG_REGULATORY: regulatory processing
* @ATH_DBG_ANI: adaptive noise immunitive processing
* @ATH_DBG_XMIT: basic xmit operation
* @ATH_DBG_BEACON: beacon handling
* @ATH_DBG_CONFIG: configuration of the hardware
* @ATH_DBG_FATAL: fatal errors, this is the default, DBG_DEFAULT
* @ATH_DBG_PS: power save processing
* @ATH_DBG_HWTIMER: hardware timer handling
* @ATH_DBG_BTCOEX: bluetooth coexistance
* @ATH_DBG_BSTUCK: stuck beacons
* @ATH_DBG_ANY: enable all debugging
*
* The debug level is used to control the amount and type of debugging output
* we want to see. Each driver has its own method for enabling debugging and
* modifying debug level states -- but this is typically done through a
* module parameter 'debug' along with a respective 'debug' debugfs file
* entry.
*/
enum ATH_DEBUG {
ATH_DBG_RESET = 0x00000001,
ATH_DBG_QUEUE = 0x00000002,
ATH_DBG_EEPROM = 0x00000004,
ATH_DBG_CALIBRATE = 0x00000008,
ATH_DBG_INTERRUPT = 0x00000010,
ATH_DBG_REGULATORY = 0x00000020,
ATH_DBG_ANI = 0x00000040,
ATH_DBG_XMIT = 0x00000080,
ATH_DBG_BEACON = 0x00000100,
ATH_DBG_CONFIG = 0x00000200,
ATH_DBG_FATAL = 0x00000400,
ATH_DBG_PS = 0x00000800,
ATH_DBG_HWTIMER = 0x00001000,
ATH_DBG_BTCOEX = 0x00002000,
ATH_DBG_WMI = 0x00004000,
ATH_DBG_BSTUCK = 0x00008000,
ATH_DBG_ANY = 0xffffffff
};
#define ATH_DBG_DEFAULT (ATH_DBG_FATAL)
#ifdef CONFIG_ATH_DEBUG
#define ath_dbg(common, dbg_mask, fmt, ...) \
({ \
int rtn; \
if ((common)->debug_mask & dbg_mask) \
rtn = ath_printk(KERN_DEBUG, common, fmt, \
##__VA_ARGS__); \
else \
rtn = 0; \
\
rtn; \
})
#define ATH_DBG_WARN(foo, arg...) WARN(foo, arg)
#define ATH_DBG_WARN_ON_ONCE(foo) WARN_ON_ONCE(foo)
#else
static inline __attribute__ ((format (printf, 3, 4))) int
ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask,
const char *fmt, ...)
{
return 0;
}
#define ATH_DBG_WARN(foo, arg...) do {} while (0)
#define ATH_DBG_WARN_ON_ONCE(foo) ({ \
int __ret_warn_once = !!(foo); \
unlikely(__ret_warn_once); \
})
#endif /* CONFIG_ATH_DEBUG */
/** Returns string describing opmode, or NULL if unknown mode. */
#ifdef CONFIG_ATH_DEBUG
const char *ath_opmode_to_string(enum nl80211_iftype opmode);
#else
static inline const char *ath_opmode_to_string(enum nl80211_iftype opmode)
{
return "UNKNOWN";
}
#endif
#endif /* ATH_H */
