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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2009-07-31 16:28:17 +08:00
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#ifndef _VME_H_
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#define _VME_H_
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/* Resource Type */
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enum vme_resource_type {
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VME_MASTER,
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VME_SLAVE,
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2009-08-12 00:44:56 +08:00
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VME_DMA,
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VME_LM
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2009-07-31 16:28:17 +08:00
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};
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/* VME Address Spaces */
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#define VME_A16 0x1
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#define VME_A24 0x2
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#define VME_A32 0x4
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#define VME_A64 0x8
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#define VME_CRCSR 0x10
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#define VME_USER1 0x20
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#define VME_USER2 0x40
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#define VME_USER3 0x80
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#define VME_USER4 0x100
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#define VME_A16_MAX 0x10000ULL
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#define VME_A24_MAX 0x1000000ULL
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#define VME_A32_MAX 0x100000000ULL
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#define VME_A64_MAX 0x10000000000000000ULL
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#define VME_CRCSR_MAX 0x1000000ULL
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/* VME Cycle Types */
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#define VME_SCT 0x1
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#define VME_BLT 0x2
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#define VME_MBLT 0x4
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#define VME_2eVME 0x8
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#define VME_2eSST 0x10
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#define VME_2eSSTB 0x20
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#define VME_2eSST160 0x100
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#define VME_2eSST267 0x200
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#define VME_2eSST320 0x400
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#define VME_SUPER 0x1000
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#define VME_USER 0x2000
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#define VME_PROG 0x4000
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#define VME_DATA 0x8000
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/* VME Data Widths */
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#define VME_D8 0x1
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#define VME_D16 0x2
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#define VME_D32 0x4
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#define VME_D64 0x8
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/* Arbitration Scheduling Modes */
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#define VME_R_ROBIN_MODE 0x1
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#define VME_PRIORITY_MODE 0x2
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#define VME_DMA_PATTERN (1<<0)
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#define VME_DMA_PCI (1<<1)
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#define VME_DMA_VME (1<<2)
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#define VME_DMA_PATTERN_BYTE (1<<0)
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#define VME_DMA_PATTERN_WORD (1<<1)
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#define VME_DMA_PATTERN_INCREMENT (1<<2)
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2010-02-18 23:12:58 +08:00
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#define VME_DMA_VME_TO_MEM (1<<0)
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#define VME_DMA_MEM_TO_VME (1<<1)
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#define VME_DMA_VME_TO_VME (1<<2)
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#define VME_DMA_MEM_TO_MEM (1<<3)
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#define VME_DMA_PATTERN_TO_VME (1<<4)
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#define VME_DMA_PATTERN_TO_MEM (1<<5)
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2009-07-31 16:28:17 +08:00
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struct vme_dma_attr {
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2011-12-02 01:06:29 +08:00
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u32 type;
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2009-07-31 16:28:17 +08:00
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void *private;
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};
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struct vme_resource {
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enum vme_resource_type type;
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struct list_head *entry;
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};
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extern struct bus_type vme_bus_type;
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2015-10-11 06:00:58 +08:00
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/* Number of VME interrupt vectors */
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#define VME_NUM_STATUSID 256
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2011-09-26 17:27:16 +08:00
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/* VME_MAX_BRIDGES comes from the type of vme_bus_numbers */
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#define VME_MAX_BRIDGES (sizeof(unsigned int)*8)
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#define VME_MAX_SLOTS 32
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2009-08-06 16:43:07 +08:00
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#define VME_SLOT_CURRENT -1
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#define VME_SLOT_ALL -2
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2011-09-26 17:27:15 +08:00
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/**
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2017-03-04 08:34:29 +08:00
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* struct vme_dev - Structure representing a VME device
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2011-11-04 18:12:31 +08:00
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* @num: The device number
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2011-09-26 17:27:15 +08:00
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* @bridge: Pointer to the bridge device this device is on
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* @dev: Internal device structure
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2011-09-26 17:27:16 +08:00
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* @drv_list: List of devices (per driver)
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* @bridge_list: List of devices (per bridge)
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2011-09-26 17:27:15 +08:00
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*/
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struct vme_dev {
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2011-09-26 17:27:17 +08:00
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int num;
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2011-09-26 17:27:15 +08:00
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struct vme_bridge *bridge;
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struct device dev;
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2011-09-26 17:27:16 +08:00
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struct list_head drv_list;
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struct list_head bridge_list;
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2011-09-26 17:27:15 +08:00
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};
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2017-03-04 08:34:29 +08:00
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/**
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* struct vme_driver - Structure representing a VME driver
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* @name: Driver name, should be unique among VME drivers and usually the same
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* as the module name.
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* @match: Callback used to determine whether probe should be run.
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* @probe: Callback for device binding, called when new device is detected.
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* @remove: Callback, called on device removal.
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* @driver: Underlying generic device driver structure.
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* @devices: List of VME devices (struct vme_dev) associated with this driver.
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*/
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2009-07-31 16:28:17 +08:00
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struct vme_driver {
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2011-06-03 17:07:39 +08:00
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const char *name;
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2011-09-26 17:27:16 +08:00
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int (*match)(struct vme_dev *);
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int (*probe)(struct vme_dev *);
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2021-01-28 05:23:29 +08:00
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void (*remove)(struct vme_dev *);
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2011-09-26 17:27:16 +08:00
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struct device_driver driver;
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struct list_head devices;
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2009-07-31 16:28:17 +08:00
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};
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2009-12-15 16:43:02 +08:00
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void *vme_alloc_consistent(struct vme_resource *, size_t, dma_addr_t *);
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2009-07-31 16:28:17 +08:00
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void vme_free_consistent(struct vme_resource *, size_t, void *,
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dma_addr_t);
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size_t vme_get_size(struct vme_resource *);
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2015-05-28 20:07:04 +08:00
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int vme_check_window(u32 aspace, unsigned long long vme_base,
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unsigned long long size);
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2009-07-31 16:28:17 +08:00
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2011-12-02 01:06:29 +08:00
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struct vme_resource *vme_slave_request(struct vme_dev *, u32, u32);
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2009-12-15 16:43:02 +08:00
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int vme_slave_set(struct vme_resource *, int, unsigned long long,
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2011-12-02 01:06:29 +08:00
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unsigned long long, dma_addr_t, u32, u32);
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2009-12-15 16:43:02 +08:00
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int vme_slave_get(struct vme_resource *, int *, unsigned long long *,
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2011-12-02 01:06:29 +08:00
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unsigned long long *, dma_addr_t *, u32 *, u32 *);
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2009-07-31 16:28:17 +08:00
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void vme_slave_free(struct vme_resource *);
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2011-12-02 01:06:29 +08:00
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struct vme_resource *vme_master_request(struct vme_dev *, u32, u32, u32);
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2009-12-15 16:43:02 +08:00
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int vme_master_set(struct vme_resource *, int, unsigned long long,
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2011-12-02 01:06:29 +08:00
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unsigned long long, u32, u32, u32);
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2009-12-15 16:43:02 +08:00
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int vme_master_get(struct vme_resource *, int *, unsigned long long *,
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2011-12-02 01:06:29 +08:00
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unsigned long long *, u32 *, u32 *, u32 *);
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2009-07-31 16:28:17 +08:00
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ssize_t vme_master_read(struct vme_resource *, void *, size_t, loff_t);
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ssize_t vme_master_write(struct vme_resource *, void *, size_t, loff_t);
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2009-12-15 16:43:02 +08:00
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unsigned int vme_master_rmw(struct vme_resource *, unsigned int, unsigned int,
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2009-07-31 16:28:17 +08:00
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unsigned int, loff_t);
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2015-02-26 23:53:10 +08:00
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int vme_master_mmap(struct vme_resource *resource, struct vm_area_struct *vma);
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2009-07-31 16:28:17 +08:00
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void vme_master_free(struct vme_resource *);
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2011-12-02 01:06:29 +08:00
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struct vme_resource *vme_dma_request(struct vme_dev *, u32);
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2009-07-31 16:28:17 +08:00
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struct vme_dma_list *vme_new_dma_list(struct vme_resource *);
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2011-12-02 01:06:29 +08:00
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struct vme_dma_attr *vme_dma_pattern_attribute(u32, u32);
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2009-07-31 16:28:17 +08:00
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struct vme_dma_attr *vme_dma_pci_attribute(dma_addr_t);
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2011-12-02 01:06:29 +08:00
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struct vme_dma_attr *vme_dma_vme_attribute(unsigned long long, u32, u32, u32);
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2009-07-31 16:28:17 +08:00
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void vme_dma_free_attribute(struct vme_dma_attr *);
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int vme_dma_list_add(struct vme_dma_list *, struct vme_dma_attr *,
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struct vme_dma_attr *, size_t);
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int vme_dma_list_exec(struct vme_dma_list *);
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int vme_dma_list_free(struct vme_dma_list *);
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int vme_dma_free(struct vme_resource *);
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2011-09-26 17:27:15 +08:00
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int vme_irq_request(struct vme_dev *, int, int,
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2009-07-31 16:28:17 +08:00
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void (*callback)(int, int, void *), void *);
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2011-09-26 17:27:15 +08:00
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void vme_irq_free(struct vme_dev *, int, int);
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int vme_irq_generate(struct vme_dev *, int, int);
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2009-07-31 16:28:17 +08:00
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2012-01-20 17:11:27 +08:00
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struct vme_resource *vme_lm_request(struct vme_dev *);
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2009-08-12 00:44:56 +08:00
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int vme_lm_count(struct vme_resource *);
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2011-12-02 01:06:29 +08:00
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int vme_lm_set(struct vme_resource *, unsigned long long, u32, u32);
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int vme_lm_get(struct vme_resource *, unsigned long long *, u32 *, u32 *);
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2016-04-30 05:41:02 +08:00
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int vme_lm_attach(struct vme_resource *, int, void (*callback)(void *), void *);
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2009-08-12 00:44:56 +08:00
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int vme_lm_detach(struct vme_resource *, int);
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void vme_lm_free(struct vme_resource *);
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2009-07-31 16:28:17 +08:00
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2013-11-08 19:58:35 +08:00
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int vme_slot_num(struct vme_dev *);
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2013-11-08 19:58:34 +08:00
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int vme_bus_num(struct vme_dev *);
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2009-07-31 16:28:17 +08:00
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2011-09-26 17:27:16 +08:00
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int vme_register_driver(struct vme_driver *, unsigned int);
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2009-12-15 16:43:02 +08:00
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void vme_unregister_driver(struct vme_driver *);
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2009-07-31 16:28:17 +08:00
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#endif /* _VME_H_ */
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