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linux/drivers/net/wireless/b43/phy_common.h
Rafał Miłecki 3f7bb3f34c b43: AC-PHY: prepare place for developing new PHY support 
There are new (not anymore?) Broadcom 802.11ac wireless cards based on
chipsets like BCM4352 and BCM4360. They use a new PHY type (called
simply AC) that will require new specific code.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-29 10:54:43 +02:00

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#ifndef LINUX_B43_PHY_COMMON_H_
#define LINUX_B43_PHY_COMMON_H_
#include <linux/types.h>
#include <linux/nl80211.h>
struct b43_wldev;
/* Complex number using 2 32-bit signed integers */
struct b43_c32 { s32 i, q; };
#define CORDIC_CONVERT(value) (((value) >= 0) ? \
((((value) >> 15) + 1) >> 1) : \
-((((-(value)) >> 15) + 1) >> 1))
/* PHY register routing bits */
#define B43_PHYROUTE 0x0C00 /* PHY register routing bits mask */
#define B43_PHYROUTE_BASE 0x0000 /* Base registers */
#define B43_PHYROUTE_OFDM_GPHY 0x0400 /* OFDM register routing for G-PHYs */
#define B43_PHYROUTE_EXT_GPHY 0x0800 /* Extended G-PHY registers */
#define B43_PHYROUTE_N_BMODE 0x0C00 /* N-PHY BMODE registers */
/* CCK (B-PHY) registers. */
#define B43_PHY_CCK(reg) ((reg) | B43_PHYROUTE_BASE)
/* N-PHY registers. */
#define B43_PHY_N(reg) ((reg) | B43_PHYROUTE_BASE)
/* N-PHY BMODE registers. */
#define B43_PHY_N_BMODE(reg) ((reg) | B43_PHYROUTE_N_BMODE)
/* OFDM (A-PHY) registers. */
#define B43_PHY_OFDM(reg) ((reg) | B43_PHYROUTE_OFDM_GPHY)
/* Extended G-PHY registers. */
#define B43_PHY_EXTG(reg) ((reg) | B43_PHYROUTE_EXT_GPHY)
/* Masks for the PHY versioning registers. */
#define B43_PHYVER_ANALOG 0xF000
#define B43_PHYVER_ANALOG_SHIFT 12
#define B43_PHYVER_TYPE 0x0F00
#define B43_PHYVER_TYPE_SHIFT 8
#define B43_PHYVER_VERSION 0x00FF
/* PHY writes need to be flushed if we reach limit */
#define B43_MAX_WRITES_IN_ROW 24
/**
* enum b43_interference_mitigation - Interference Mitigation mode
*
* @B43_INTERFMODE_NONE: Disabled
* @B43_INTERFMODE_NONWLAN: Non-WLAN Interference Mitigation
* @B43_INTERFMODE_MANUALWLAN: WLAN Interference Mitigation
* @B43_INTERFMODE_AUTOWLAN: Automatic WLAN Interference Mitigation
*/
enum b43_interference_mitigation {
B43_INTERFMODE_NONE,
B43_INTERFMODE_NONWLAN,
B43_INTERFMODE_MANUALWLAN,
B43_INTERFMODE_AUTOWLAN,
};
/* Antenna identifiers */
enum {
B43_ANTENNA0 = 0, /* Antenna 0 */
B43_ANTENNA1 = 1, /* Antenna 1 */
B43_ANTENNA_AUTO0 = 2, /* Automatic, starting with antenna 0 */
B43_ANTENNA_AUTO1 = 3, /* Automatic, starting with antenna 1 */
B43_ANTENNA2 = 4,
B43_ANTENNA3 = 8,
B43_ANTENNA_AUTO = B43_ANTENNA_AUTO0,
B43_ANTENNA_DEFAULT = B43_ANTENNA_AUTO,
};
/**
* enum b43_txpwr_result - Return value for the recalc_txpower PHY op.
*
* @B43_TXPWR_RES_NEED_ADJUST: Values changed. Hardware adjustment is needed.
* @B43_TXPWR_RES_DONE: No more work to do. Everything is done.
*/
enum b43_txpwr_result {
B43_TXPWR_RES_NEED_ADJUST,
B43_TXPWR_RES_DONE,
};
/**
* struct b43_phy_operations - Function pointers for PHY ops.
*
* @allocate: Allocate and initialise the PHY data structures.
* Must not be NULL.
* @free: Destroy and free the PHY data structures.
* Must not be NULL.
*
* @prepare_structs: Prepare the PHY data structures.
* The data structures allocated in @allocate are
* initialized here.
* Must not be NULL.
* @prepare_hardware: Prepare the PHY. This is called before b43_chip_init to
* do some early early PHY hardware init.
* Can be NULL, if not required.
* @init: Initialize the PHY.
* Must not be NULL.
* @exit: Shutdown the PHY.
* Can be NULL, if not required.
*
* @phy_read: Read from a PHY register.
* Must not be NULL.
* @phy_write: Write to a PHY register.
* Must not be NULL.
* @phy_maskset: Maskset a PHY register, taking shortcuts.
* If it is NULL, a generic algorithm is used.
* @radio_read: Read from a Radio register.
* Must not be NULL.
* @radio_write: Write to a Radio register.
* Must not be NULL.
*
* @supports_hwpctl: Returns a boolean whether Hardware Power Control
* is supported or not.
* If NULL, hwpctl is assumed to be never supported.
* @software_rfkill: Turn the radio ON or OFF.
* Possible state values are
* RFKILL_STATE_SOFT_BLOCKED or
* RFKILL_STATE_UNBLOCKED
* Must not be NULL.
* @switch_analog: Turn the Analog on/off.
* Must not be NULL.
* @switch_channel: Switch the radio to another channel.
* Must not be NULL.
* @get_default_chan: Just returns the default channel number.
* Must not be NULL.
* @set_rx_antenna: Set the antenna used for RX.
* Can be NULL, if not supported.
* @interf_mitigation: Switch the Interference Mitigation mode.
* Can be NULL, if not supported.
*
* @recalc_txpower: Recalculate the transmission power parameters.
* This callback has to recalculate the TX power settings,
* but does not need to write them to the hardware, yet.
* Returns enum b43_txpwr_result to indicate whether the hardware
* needs to be adjusted.
* If B43_TXPWR_NEED_ADJUST is returned, @adjust_txpower
* will be called later.
* If the parameter "ignore_tssi" is true, the TSSI values should
* be ignored and a recalculation of the power settings should be
* done even if the TSSI values did not change.
* This function may sleep, but should not.
* Must not be NULL.
* @adjust_txpower: Write the previously calculated TX power settings
* (from @recalc_txpower) to the hardware.
* This function may sleep.
* Can be NULL, if (and ONLY if) @recalc_txpower _always_
* returns B43_TXPWR_RES_DONE.
*
* @pwork_15sec: Periodic work. Called every 15 seconds.
* Can be NULL, if not required.
* @pwork_60sec: Periodic work. Called every 60 seconds.
* Can be NULL, if not required.
*/
struct b43_phy_operations {
/* Initialisation */
int (*allocate)(struct b43_wldev *dev);
void (*free)(struct b43_wldev *dev);
void (*prepare_structs)(struct b43_wldev *dev);
int (*prepare_hardware)(struct b43_wldev *dev);
int (*init)(struct b43_wldev *dev);
void (*exit)(struct b43_wldev *dev);
/* Register access */
u16 (*phy_read)(struct b43_wldev *dev, u16 reg);
void (*phy_write)(struct b43_wldev *dev, u16 reg, u16 value);
void (*phy_maskset)(struct b43_wldev *dev, u16 reg, u16 mask, u16 set);
u16 (*radio_read)(struct b43_wldev *dev, u16 reg);
void (*radio_write)(struct b43_wldev *dev, u16 reg, u16 value);
/* Radio */
bool (*supports_hwpctl)(struct b43_wldev *dev);
void (*software_rfkill)(struct b43_wldev *dev, bool blocked);
void (*switch_analog)(struct b43_wldev *dev, bool on);
int (*switch_channel)(struct b43_wldev *dev, unsigned int new_channel);
unsigned int (*get_default_chan)(struct b43_wldev *dev);
void (*set_rx_antenna)(struct b43_wldev *dev, int antenna);
int (*interf_mitigation)(struct b43_wldev *dev,
enum b43_interference_mitigation new_mode);
/* Transmission power adjustment */
enum b43_txpwr_result (*recalc_txpower)(struct b43_wldev *dev,
bool ignore_tssi);
void (*adjust_txpower)(struct b43_wldev *dev);
/* Misc */
void (*pwork_15sec)(struct b43_wldev *dev);
void (*pwork_60sec)(struct b43_wldev *dev);
};
struct b43_phy_a;
struct b43_phy_g;
struct b43_phy_n;
struct b43_phy_lp;
struct b43_phy_ht;
struct b43_phy_lcn;
struct b43_phy {
/* Hardware operation callbacks. */
const struct b43_phy_operations *ops;
/* Most hardware context information is stored in the standard-
* specific data structures pointed to by the pointers below.
* Only one of them is valid (the currently enabled PHY). */
#ifdef CONFIG_B43_DEBUG
/* No union for debug build to force NULL derefs in buggy code. */
struct {
#else
union {
#endif
/* A-PHY specific information */
struct b43_phy_a *a;
/* G-PHY specific information */
struct b43_phy_g *g;
/* N-PHY specific information */
struct b43_phy_n *n;
/* LP-PHY specific information */
struct b43_phy_lp *lp;
/* HT-PHY specific information */
struct b43_phy_ht *ht;
/* LCN-PHY specific information */
struct b43_phy_lcn *lcn;
/* AC-PHY specific information */
struct b43_phy_ac *ac;
};
/* Band support flags. */
bool supports_2ghz;
bool supports_5ghz;
/* Is GMODE (2 GHz mode) bit enabled? */
bool gmode;
/* After power reset full init has to be performed */
bool do_full_init;
/* Analog Type */
u8 analog;
/* B43_PHYTYPE_ */
u8 type;
/* PHY revision number. */
u8 rev;
/* Count writes since last read */
u8 writes_counter;
/* Radio versioning */
u16 radio_manuf; /* Radio manufacturer */
u16 radio_ver; /* Radio version */
u8 radio_rev; /* Radio revision */
/* Software state of the radio */
bool radio_on;
/* Desired TX power level (in dBm).
* This is set by the user and adjusted in b43_phy_xmitpower(). */
int desired_txpower;
/* Hardware Power Control enabled? */
bool hardware_power_control;
/* The time (in absolute jiffies) when the next TX power output
* check is needed. */
unsigned long next_txpwr_check_time;
/* Current channel */
struct cfg80211_chan_def *chandef;
unsigned int channel;
/* PHY TX errors counter. */
atomic_t txerr_cnt;
#ifdef CONFIG_B43_DEBUG
/* PHY registers locked (w.r.t. firmware) */
bool phy_locked;
/* Radio registers locked (w.r.t. firmware) */
bool radio_locked;
#endif /* B43_DEBUG */
};
/**
* b43_phy_allocate - Allocate PHY structs
* Allocate the PHY data structures, based on the current dev->phy.type
*/
int b43_phy_allocate(struct b43_wldev *dev);
/**
* b43_phy_free - Free PHY structs
*/
void b43_phy_free(struct b43_wldev *dev);
/**
* b43_phy_init - Initialise the PHY
*/
int b43_phy_init(struct b43_wldev *dev);
/**
* b43_phy_exit - Cleanup PHY
*/
void b43_phy_exit(struct b43_wldev *dev);
/**
* b43_has_hardware_pctl - Hardware Power Control supported?
* Returns a boolean, whether hardware power control is supported.
*/
bool b43_has_hardware_pctl(struct b43_wldev *dev);
/**
* b43_phy_read - 16bit PHY register read access
*/
u16 b43_phy_read(struct b43_wldev *dev, u16 reg);
/**
* b43_phy_write - 16bit PHY register write access
*/
void b43_phy_write(struct b43_wldev *dev, u16 reg, u16 value);
/**
* b43_phy_copy - copy contents of 16bit PHY register to another
*/
void b43_phy_copy(struct b43_wldev *dev, u16 destreg, u16 srcreg);
/**
* b43_phy_mask - Mask a PHY register with a mask
*/
void b43_phy_mask(struct b43_wldev *dev, u16 offset, u16 mask);
/**
* b43_phy_set - OR a PHY register with a bitmap
*/
void b43_phy_set(struct b43_wldev *dev, u16 offset, u16 set);
/**
* b43_phy_maskset - Mask and OR a PHY register with a mask and bitmap
*/
void b43_phy_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set);
/**
* b43_radio_read - 16bit Radio register read access
*/
u16 b43_radio_read(struct b43_wldev *dev, u16 reg);
#define b43_radio_read16 b43_radio_read /* DEPRECATED */
/**
* b43_radio_write - 16bit Radio register write access
*/
void b43_radio_write(struct b43_wldev *dev, u16 reg, u16 value);
#define b43_radio_write16 b43_radio_write /* DEPRECATED */
/**
* b43_radio_mask - Mask a 16bit radio register with a mask
*/
void b43_radio_mask(struct b43_wldev *dev, u16 offset, u16 mask);
/**
* b43_radio_set - OR a 16bit radio register with a bitmap
*/
void b43_radio_set(struct b43_wldev *dev, u16 offset, u16 set);
/**
* b43_radio_maskset - Mask and OR a radio register with a mask and bitmap
*/
void b43_radio_maskset(struct b43_wldev *dev, u16 offset, u16 mask, u16 set);
/**
* b43_radio_wait_value - Waits for a given value in masked register read
*/
bool b43_radio_wait_value(struct b43_wldev *dev, u16 offset, u16 mask,
u16 value, int delay, int timeout);
/**
* b43_radio_lock - Lock firmware radio register access
*/
void b43_radio_lock(struct b43_wldev *dev);
/**
* b43_radio_unlock - Unlock firmware radio register access
*/
void b43_radio_unlock(struct b43_wldev *dev);
/**
* b43_phy_lock - Lock firmware PHY register access
*/
void b43_phy_lock(struct b43_wldev *dev);
/**
* b43_phy_unlock - Unlock firmware PHY register access
*/
void b43_phy_unlock(struct b43_wldev *dev);
void b43_phy_put_into_reset(struct b43_wldev *dev);
void b43_phy_take_out_of_reset(struct b43_wldev *dev);
/**
* b43_switch_channel - Switch to another channel
*/
int b43_switch_channel(struct b43_wldev *dev, unsigned int new_channel);
/**
* b43_software_rfkill - Turn the radio ON or OFF in software.
*/
void b43_software_rfkill(struct b43_wldev *dev, bool blocked);
/**
* b43_phy_txpower_check - Check TX power output.
*
* Compare the current TX power output to the desired power emission
* and schedule an adjustment in case it mismatches.
*
* @flags: OR'ed enum b43_phy_txpower_check_flags flags.
* See the docs below.
*/
void b43_phy_txpower_check(struct b43_wldev *dev, unsigned int flags);
/**
* enum b43_phy_txpower_check_flags - Flags for b43_phy_txpower_check()
*
* @B43_TXPWR_IGNORE_TIME: Ignore the schedule time and force-redo
* the check now.
* @B43_TXPWR_IGNORE_TSSI: Redo the recalculation, even if the average
* TSSI did not change.
*/
enum b43_phy_txpower_check_flags {
B43_TXPWR_IGNORE_TIME = (1 << 0),
B43_TXPWR_IGNORE_TSSI = (1 << 1),
};
struct work_struct;
void b43_phy_txpower_adjust_work(struct work_struct *work);
/**
* b43_phy_shm_tssi_read - Read the average of the last 4 TSSI from SHM.
*
* @shm_offset: The SHM address to read the values from.
*
* Returns the average of the 4 TSSI values, or a negative error code.
*/
int b43_phy_shm_tssi_read(struct b43_wldev *dev, u16 shm_offset);
/**
* b43_phy_switch_analog_generic - Generic PHY operation for switching the Analog.
*
* It does the switching based on the PHY0 core register.
* Do _not_ call this directly. Only use it as a switch_analog callback
* for struct b43_phy_operations.
*/
void b43_phyop_switch_analog_generic(struct b43_wldev *dev, bool on);
bool b43_is_40mhz(struct b43_wldev *dev);
void b43_phy_force_clock(struct b43_wldev *dev, bool force);
struct b43_c32 b43_cordic(int theta);
#endif /* LINUX_B43_PHY_COMMON_H_ */
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