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>
2017-11-01 08:07:57 -06:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2005-04-16 16:20:36 -06:00
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#ifndef __SUNGEM_PHY_H__
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#define __SUNGEM_PHY_H__
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struct mii_phy;
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/* Operations supported by any kind of PHY */
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struct mii_phy_ops
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{
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int (*init)(struct mii_phy *phy);
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int (*suspend)(struct mii_phy *phy);
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int (*setup_aneg)(struct mii_phy *phy, u32 advertise);
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int (*setup_forced)(struct mii_phy *phy, int speed, int fd);
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int (*poll_link)(struct mii_phy *phy);
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int (*read_link)(struct mii_phy *phy);
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2007-02-20 15:30:50 -07:00
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int (*enable_fiber)(struct mii_phy *phy, int autoneg);
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2005-04-16 16:20:36 -06:00
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};
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/* Structure used to statically define an mii/gii based PHY */
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struct mii_phy_def
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{
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u32 phy_id; /* Concatenated ID1 << 16 | ID2 */
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u32 phy_id_mask; /* Significant bits */
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u32 features; /* Ethtool SUPPORTED_* defines */
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int magic_aneg; /* Autoneg does all speed test for us */
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const char* name;
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const struct mii_phy_ops* ops;
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};
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2007-02-20 15:30:50 -07:00
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enum {
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BCM54XX_COPPER,
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BCM54XX_FIBER,
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BCM54XX_GBIC,
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BCM54XX_SGMII,
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BCM54XX_UNKNOWN,
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};
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2005-04-16 16:20:36 -06:00
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/* An instance of a PHY, partially borrowed from mii_if_info */
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struct mii_phy
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{
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struct mii_phy_def* def;
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2007-01-03 19:54:43 -07:00
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u32 advertising;
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2005-04-16 16:20:36 -06:00
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int mii_id;
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/* 1: autoneg enabled, 0: disabled */
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int autoneg;
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/* forced speed & duplex (no autoneg)
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* partner speed & duplex & pause (autoneg)
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*/
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int speed;
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int duplex;
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int pause;
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/* Provided by host chip */
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2005-07-07 18:56:09 -06:00
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struct net_device *dev;
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2005-04-16 16:20:36 -06:00
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int (*mdio_read) (struct net_device *dev, int mii_id, int reg);
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void (*mdio_write) (struct net_device *dev, int mii_id, int reg, int val);
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2005-07-07 18:56:09 -06:00
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void *platform_data;
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2005-04-16 16:20:36 -06:00
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};
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/* Pass in a struct mii_phy with dev, mdio_read and mdio_write
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* filled, the remaining fields will be filled on return
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*/
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2011-08-16 00:10:39 -06:00
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extern int sungem_phy_probe(struct mii_phy *phy, int mii_id);
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/* MII definitions missing from mii.h */
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#define BMCR_SPD2 0x0040 /* Gigabit enable (bcm54xx) */
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#define LPA_PAUSE 0x0400
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/* More PHY registers (model specific) */
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/* MII BCM5201 MULTIPHY interrupt register */
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#define MII_BCM5201_INTERRUPT 0x1A
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#define MII_BCM5201_INTERRUPT_INTENABLE 0x4000
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#define MII_BCM5201_AUXMODE2 0x1B
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#define MII_BCM5201_AUXMODE2_LOWPOWER 0x0008
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#define MII_BCM5201_MULTIPHY 0x1E
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/* MII BCM5201 MULTIPHY register bits */
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#define MII_BCM5201_MULTIPHY_SERIALMODE 0x0002
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#define MII_BCM5201_MULTIPHY_SUPERISOLATE 0x0008
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/* MII BCM5221 Additional registers */
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#define MII_BCM5221_TEST 0x1f
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#define MII_BCM5221_TEST_ENABLE_SHADOWS 0x0080
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#define MII_BCM5221_SHDOW_AUX_STAT2 0x1b
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#define MII_BCM5221_SHDOW_AUX_STAT2_APD 0x0020
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#define MII_BCM5221_SHDOW_AUX_MODE4 0x1a
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#define MII_BCM5221_SHDOW_AUX_MODE4_IDDQMODE 0x0001
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#define MII_BCM5221_SHDOW_AUX_MODE4_CLKLOPWR 0x0004
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2007-01-03 19:54:43 -07:00
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/* MII BCM5241 Additional registers */
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#define MII_BCM5241_SHDOW_AUX_MODE4_STANDBYPWR 0x0008
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2005-04-16 16:20:36 -06:00
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/* MII BCM5400 1000-BASET Control register */
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#define MII_BCM5400_GB_CONTROL 0x09
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#define MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP 0x0200
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/* MII BCM5400 AUXCONTROL register */
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#define MII_BCM5400_AUXCONTROL 0x18
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#define MII_BCM5400_AUXCONTROL_PWR10BASET 0x0004
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/* MII BCM5400 AUXSTATUS register */
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#define MII_BCM5400_AUXSTATUS 0x19
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#define MII_BCM5400_AUXSTATUS_LINKMODE_MASK 0x0700
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2006-09-13 11:24:59 -06:00
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#define MII_BCM5400_AUXSTATUS_LINKMODE_SHIFT 8
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2005-04-16 16:20:36 -06:00
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/* 1000BT control (Marvell & BCM54xx at least) */
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#define MII_1000BASETCONTROL 0x09
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#define MII_1000BASETCONTROL_FULLDUPLEXCAP 0x0200
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#define MII_1000BASETCONTROL_HALFDUPLEXCAP 0x0100
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/* Marvell 88E1011 PHY control */
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#define MII_M1011_PHY_SPEC_CONTROL 0x10
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#define MII_M1011_PHY_SPEC_CONTROL_MANUAL_MDIX 0x20
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#define MII_M1011_PHY_SPEC_CONTROL_AUTO_MDIX 0x40
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/* Marvell 88E1011 PHY status */
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#define MII_M1011_PHY_SPEC_STATUS 0x11
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#define MII_M1011_PHY_SPEC_STATUS_1000 0x8000
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#define MII_M1011_PHY_SPEC_STATUS_100 0x4000
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#define MII_M1011_PHY_SPEC_STATUS_SPD_MASK 0xc000
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#define MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX 0x2000
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#define MII_M1011_PHY_SPEC_STATUS_RESOLVED 0x0800
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2007-01-03 19:54:43 -07:00
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#define MII_M1011_PHY_SPEC_STATUS_TX_PAUSE 0x0008
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#define MII_M1011_PHY_SPEC_STATUS_RX_PAUSE 0x0004
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2005-04-16 16:20:36 -06:00
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#endif /* __SUNGEM_PHY_H__ */
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