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 22:07:57 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2008-05-20 07:53:02 +08:00
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/*
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2005-04-17 06:20:36 +08:00
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* obio.h: Some useful locations in 0xFXXXXXXXX PA obio space on sun4d.
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*
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* Copyright (C) 1997 Jakub Jelinek <jj@sunsite.mff.cuni.cz>
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*/
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#ifndef _SPARC_OBIO_H
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#define _SPARC_OBIO_H
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#include <asm/asi.h>
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/* This weird monster likes to use the very upper parts of
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36bit PA for these things :) */
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/* CSR space (for each XDBUS)
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* ------------------------------------------------------------------------
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* | 0xFE | DEVID | | XDBUS ID | |
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* ------------------------------------------------------------------------
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* 35 28 27 20 19 10 9 8 7 0
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*/
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#define CSR_BASE_ADDR 0xe0000000
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#define CSR_CPU_SHIFT (32 - 4 - 5)
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#define CSR_XDBUS_SHIFT 8
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#define CSR_BASE(cpu) (((CSR_BASE_ADDR >> CSR_CPU_SHIFT) + cpu) << CSR_CPU_SHIFT)
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/* ECSR space (not for each XDBUS)
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* ------------------------------------------------------------------------
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* | 0xF | DEVID[7:1] | |
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* ------------------------------------------------------------------------
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* 35 32 31 25 24 0
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*/
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#define ECSR_BASE_ADDR 0x00000000
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#define ECSR_CPU_SHIFT (32 - 5)
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#define ECSR_DEV_SHIFT (32 - 8)
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#define ECSR_BASE(cpu) ((cpu) << ECSR_CPU_SHIFT)
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#define ECSR_DEV_BASE(devid) ((devid) << ECSR_DEV_SHIFT)
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/* Bus Watcher */
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#define BW_LOCAL_BASE 0xfff00000
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#define BW_CID 0x00000000
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#define BW_DBUS_CTRL 0x00000008
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#define BW_DBUS_DATA 0x00000010
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#define BW_CTRL 0x00001000
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#define BW_INTR_TABLE 0x00001040
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#define BW_INTR_TABLE_CLEAR 0x00001080
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#define BW_PRESCALER 0x000010c0
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#define BW_PTIMER_LIMIT 0x00002000
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#define BW_PTIMER_COUNTER2 0x00002004
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#define BW_PTIMER_NDLIMIT 0x00002008
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#define BW_PTIMER_CTRL 0x0000200c
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#define BW_PTIMER_COUNTER 0x00002010
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#define BW_TIMER_LIMIT 0x00003000
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#define BW_TIMER_COUNTER2 0x00003004
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#define BW_TIMER_NDLIMIT 0x00003008
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#define BW_TIMER_CTRL 0x0000300c
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#define BW_TIMER_COUNTER 0x00003010
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/* BW Control */
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#define BW_CTRL_USER_TIMER 0x00000004 /* Is User Timer Free run enabled */
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/* Boot Bus */
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#define BB_LOCAL_BASE 0xf0000000
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#define BB_STAT1 0x00100000
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#define BB_STAT2 0x00120000
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#define BB_STAT3 0x00140000
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#define BB_LEDS 0x002e0000
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/* Bits in BB_STAT2 */
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#define BB_STAT2_AC_INTR 0x04 /* Aiee! 5ms and power is gone... */
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#define BB_STAT2_TMP_INTR 0x10 /* My Penguins are burning. Are you able to smell it? */
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#define BB_STAT2_FAN_INTR 0x20 /* My fan refuses to work */
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#define BB_STAT2_PWR_INTR 0x40 /* On SC2000, one of the two ACs died. Ok, we go on... */
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#define BB_STAT2_MASK (BB_STAT2_AC_INTR|BB_STAT2_TMP_INTR|BB_STAT2_FAN_INTR|BB_STAT2_PWR_INTR)
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/* Cache Controller */
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#define CC_BASE 0x1F00000
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#define CC_DATSTREAM 0x1F00000 /* Data stream register */
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#define CC_DATSIZE 0x1F0003F /* Size */
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#define CC_SRCSTREAM 0x1F00100 /* Source stream register */
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#define CC_DESSTREAM 0x1F00200 /* Destination stream register */
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#define CC_RMCOUNT 0x1F00300 /* Count of references and misses */
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#define CC_IPEN 0x1F00406 /* Pending Interrupts */
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#define CC_IMSK 0x1F00506 /* Interrupt Mask */
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#define CC_ICLR 0x1F00606 /* Clear pending Interrupts */
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#define CC_IGEN 0x1F00704 /* Generate Interrupt register */
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#define CC_STEST 0x1F00804 /* Internal self-test */
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#define CC_CREG 0x1F00A04 /* Control register */
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#define CC_SREG 0x1F00B00 /* Status register */
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#define CC_RREG 0x1F00C04 /* Reset register */
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#define CC_EREG 0x1F00E00 /* Error code register */
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#define CC_CID 0x1F00F04 /* Component ID */
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#ifndef __ASSEMBLY__
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2005-10-04 08:37:02 +08:00
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static inline int bw_get_intr_mask(int sbus_level)
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2005-04-17 06:20:36 +08:00
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{
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int mask;
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__asm__ __volatile__ ("lduha [%1] %2, %0" :
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"=r" (mask) :
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"r" (BW_LOCAL_BASE + BW_INTR_TABLE + (sbus_level << 3)),
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"i" (ASI_M_CTL));
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return mask;
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}
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2005-10-04 08:37:02 +08:00
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static inline void bw_clear_intr_mask(int sbus_level, int mask)
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2005-04-17 06:20:36 +08:00
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{
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__asm__ __volatile__ ("stha %0, [%1] %2" : :
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"r" (mask),
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"r" (BW_LOCAL_BASE + BW_INTR_TABLE_CLEAR + (sbus_level << 3)),
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"i" (ASI_M_CTL));
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}
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2016-03-11 07:21:43 +08:00
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static inline unsigned int bw_get_prof_limit(int cpu)
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2005-04-17 06:20:36 +08:00
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{
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2016-03-11 07:21:43 +08:00
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unsigned int limit;
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2005-04-17 06:20:36 +08:00
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__asm__ __volatile__ ("lda [%1] %2, %0" :
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"=r" (limit) :
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"r" (CSR_BASE(cpu) + BW_PTIMER_LIMIT),
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"i" (ASI_M_CTL));
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return limit;
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}
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2016-03-11 07:21:43 +08:00
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static inline void bw_set_prof_limit(int cpu, unsigned int limit)
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2005-04-17 06:20:36 +08:00
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{
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__asm__ __volatile__ ("sta %0, [%1] %2" : :
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"r" (limit),
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"r" (CSR_BASE(cpu) + BW_PTIMER_LIMIT),
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"i" (ASI_M_CTL));
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}
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2016-03-11 07:21:43 +08:00
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static inline unsigned int bw_get_ctrl(int cpu)
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2005-04-17 06:20:36 +08:00
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{
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2016-03-11 07:21:43 +08:00
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unsigned int ctrl;
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2005-04-17 06:20:36 +08:00
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__asm__ __volatile__ ("lda [%1] %2, %0" :
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"=r" (ctrl) :
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"r" (CSR_BASE(cpu) + BW_CTRL),
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"i" (ASI_M_CTL));
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return ctrl;
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}
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2016-03-11 07:21:43 +08:00
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static inline void bw_set_ctrl(int cpu, unsigned int ctrl)
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2005-04-17 06:20:36 +08:00
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{
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__asm__ __volatile__ ("sta %0, [%1] %2" : :
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"r" (ctrl),
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"r" (CSR_BASE(cpu) + BW_CTRL),
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"i" (ASI_M_CTL));
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}
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2016-03-11 07:21:43 +08:00
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static inline unsigned int cc_get_ipen(void)
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2005-04-17 06:20:36 +08:00
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{
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2016-03-11 07:21:43 +08:00
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unsigned int pending;
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2005-04-17 06:20:36 +08:00
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__asm__ __volatile__ ("lduha [%1] %2, %0" :
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"=r" (pending) :
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"r" (CC_IPEN),
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"i" (ASI_M_MXCC));
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return pending;
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}
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2016-03-11 07:21:43 +08:00
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static inline void cc_set_iclr(unsigned int clear)
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2005-04-17 06:20:36 +08:00
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{
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__asm__ __volatile__ ("stha %0, [%1] %2" : :
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"r" (clear),
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"r" (CC_ICLR),
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"i" (ASI_M_MXCC));
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}
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2016-03-11 07:21:43 +08:00
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static inline unsigned int cc_get_imsk(void)
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2005-04-17 06:20:36 +08:00
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{
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2016-03-11 07:21:43 +08:00
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unsigned int mask;
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2005-04-17 06:20:36 +08:00
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__asm__ __volatile__ ("lduha [%1] %2, %0" :
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"=r" (mask) :
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"r" (CC_IMSK),
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"i" (ASI_M_MXCC));
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return mask;
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}
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2016-03-11 07:21:43 +08:00
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static inline void cc_set_imsk(unsigned int mask)
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2005-04-17 06:20:36 +08:00
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{
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__asm__ __volatile__ ("stha %0, [%1] %2" : :
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"r" (mask),
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"r" (CC_IMSK),
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"i" (ASI_M_MXCC));
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}
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2016-03-11 07:21:43 +08:00
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static inline unsigned int cc_get_imsk_other(int cpuid)
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2005-04-17 06:20:36 +08:00
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{
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2016-03-11 07:21:43 +08:00
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unsigned int mask;
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2005-04-17 06:20:36 +08:00
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__asm__ __volatile__ ("lduha [%1] %2, %0" :
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"=r" (mask) :
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"r" (ECSR_BASE(cpuid) | CC_IMSK),
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"i" (ASI_M_CTL));
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return mask;
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}
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2016-03-11 07:21:43 +08:00
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static inline void cc_set_imsk_other(int cpuid, unsigned int mask)
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2005-04-17 06:20:36 +08:00
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{
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__asm__ __volatile__ ("stha %0, [%1] %2" : :
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"r" (mask),
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"r" (ECSR_BASE(cpuid) | CC_IMSK),
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"i" (ASI_M_CTL));
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}
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2016-03-11 07:21:43 +08:00
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static inline void cc_set_igen(unsigned int gen)
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2005-04-17 06:20:36 +08:00
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{
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__asm__ __volatile__ ("sta %0, [%1] %2" : :
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"r" (gen),
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"r" (CC_IGEN),
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"i" (ASI_M_MXCC));
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}
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#endif /* !__ASSEMBLY__ */
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#endif /* !(_SPARC_OBIO_H) */
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