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linux_dsm_epyc7002/drivers/net/wireless/broadcom/b43/phy_common.h
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

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/* SPDX-License-Identifier: GPL-2.0 */
#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_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
/* 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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