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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2008-11-28 14:08:53 +08:00
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#ifndef __ASM_ARCH_REGS_UART_H
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#define __ASM_ARCH_REGS_UART_H
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/*
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* UARTs
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*/
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/* Full Function UART (FFUART) */
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#define FFUART FFRBR
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#define FFRBR __REG(0x40100000) /* Receive Buffer Register (read only) */
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#define FFTHR __REG(0x40100000) /* Transmit Holding Register (write only) */
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#define FFIER __REG(0x40100004) /* Interrupt Enable Register (read/write) */
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#define FFIIR __REG(0x40100008) /* Interrupt ID Register (read only) */
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#define FFFCR __REG(0x40100008) /* FIFO Control Register (write only) */
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#define FFLCR __REG(0x4010000C) /* Line Control Register (read/write) */
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#define FFMCR __REG(0x40100010) /* Modem Control Register (read/write) */
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#define FFLSR __REG(0x40100014) /* Line Status Register (read only) */
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#define FFMSR __REG(0x40100018) /* Modem Status Register (read only) */
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#define FFSPR __REG(0x4010001C) /* Scratch Pad Register (read/write) */
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#define FFISR __REG(0x40100020) /* Infrared Selection Register (read/write) */
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#define FFDLL __REG(0x40100000) /* Divisor Latch Low Register (DLAB = 1) (read/write) */
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#define FFDLH __REG(0x40100004) /* Divisor Latch High Register (DLAB = 1) (read/write) */
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/* Bluetooth UART (BTUART) */
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#define BTUART BTRBR
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#define BTRBR __REG(0x40200000) /* Receive Buffer Register (read only) */
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#define BTTHR __REG(0x40200000) /* Transmit Holding Register (write only) */
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#define BTIER __REG(0x40200004) /* Interrupt Enable Register (read/write) */
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#define BTIIR __REG(0x40200008) /* Interrupt ID Register (read only) */
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#define BTFCR __REG(0x40200008) /* FIFO Control Register (write only) */
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#define BTLCR __REG(0x4020000C) /* Line Control Register (read/write) */
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#define BTMCR __REG(0x40200010) /* Modem Control Register (read/write) */
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#define BTLSR __REG(0x40200014) /* Line Status Register (read only) */
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#define BTMSR __REG(0x40200018) /* Modem Status Register (read only) */
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#define BTSPR __REG(0x4020001C) /* Scratch Pad Register (read/write) */
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#define BTISR __REG(0x40200020) /* Infrared Selection Register (read/write) */
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#define BTDLL __REG(0x40200000) /* Divisor Latch Low Register (DLAB = 1) (read/write) */
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#define BTDLH __REG(0x40200004) /* Divisor Latch High Register (DLAB = 1) (read/write) */
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/* Standard UART (STUART) */
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#define STUART STRBR
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#define STRBR __REG(0x40700000) /* Receive Buffer Register (read only) */
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#define STTHR __REG(0x40700000) /* Transmit Holding Register (write only) */
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#define STIER __REG(0x40700004) /* Interrupt Enable Register (read/write) */
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#define STIIR __REG(0x40700008) /* Interrupt ID Register (read only) */
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#define STFCR __REG(0x40700008) /* FIFO Control Register (write only) */
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#define STLCR __REG(0x4070000C) /* Line Control Register (read/write) */
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#define STMCR __REG(0x40700010) /* Modem Control Register (read/write) */
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#define STLSR __REG(0x40700014) /* Line Status Register (read only) */
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#define STMSR __REG(0x40700018) /* Reserved */
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#define STSPR __REG(0x4070001C) /* Scratch Pad Register (read/write) */
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#define STISR __REG(0x40700020) /* Infrared Selection Register (read/write) */
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#define STDLL __REG(0x40700000) /* Divisor Latch Low Register (DLAB = 1) (read/write) */
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#define STDLH __REG(0x40700004) /* Divisor Latch High Register (DLAB = 1) (read/write) */
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/* Hardware UART (HWUART) */
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#define HWUART HWRBR
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#define HWRBR __REG(0x41600000) /* Receive Buffer Register (read only) */
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#define HWTHR __REG(0x41600000) /* Transmit Holding Register (write only) */
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#define HWIER __REG(0x41600004) /* Interrupt Enable Register (read/write) */
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#define HWIIR __REG(0x41600008) /* Interrupt ID Register (read only) */
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#define HWFCR __REG(0x41600008) /* FIFO Control Register (write only) */
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#define HWLCR __REG(0x4160000C) /* Line Control Register (read/write) */
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#define HWMCR __REG(0x41600010) /* Modem Control Register (read/write) */
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#define HWLSR __REG(0x41600014) /* Line Status Register (read only) */
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#define HWMSR __REG(0x41600018) /* Modem Status Register (read only) */
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#define HWSPR __REG(0x4160001C) /* Scratch Pad Register (read/write) */
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#define HWISR __REG(0x41600020) /* Infrared Selection Register (read/write) */
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#define HWFOR __REG(0x41600024) /* Receive FIFO Occupancy Register (read only) */
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#define HWABR __REG(0x41600028) /* Auto-Baud Control Register (read/write) */
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#define HWACR __REG(0x4160002C) /* Auto-Baud Count Register (read only) */
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#define HWDLL __REG(0x41600000) /* Divisor Latch Low Register (DLAB = 1) (read/write) */
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#define HWDLH __REG(0x41600004) /* Divisor Latch High Register (DLAB = 1) (read/write) */
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#define IER_DMAE (1 << 7) /* DMA Requests Enable */
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#define IER_UUE (1 << 6) /* UART Unit Enable */
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#define IER_NRZE (1 << 5) /* NRZ coding Enable */
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#define IER_RTIOE (1 << 4) /* Receiver Time Out Interrupt Enable */
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#define IER_MIE (1 << 3) /* Modem Interrupt Enable */
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#define IER_RLSE (1 << 2) /* Receiver Line Status Interrupt Enable */
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#define IER_TIE (1 << 1) /* Transmit Data request Interrupt Enable */
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#define IER_RAVIE (1 << 0) /* Receiver Data Available Interrupt Enable */
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#define IIR_FIFOES1 (1 << 7) /* FIFO Mode Enable Status */
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#define IIR_FIFOES0 (1 << 6) /* FIFO Mode Enable Status */
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#define IIR_TOD (1 << 3) /* Time Out Detected */
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#define IIR_IID2 (1 << 2) /* Interrupt Source Encoded */
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#define IIR_IID1 (1 << 1) /* Interrupt Source Encoded */
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#define IIR_IP (1 << 0) /* Interrupt Pending (active low) */
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#define FCR_ITL2 (1 << 7) /* Interrupt Trigger Level */
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#define FCR_ITL1 (1 << 6) /* Interrupt Trigger Level */
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#define FCR_RESETTF (1 << 2) /* Reset Transmitter FIFO */
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#define FCR_RESETRF (1 << 1) /* Reset Receiver FIFO */
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#define FCR_TRFIFOE (1 << 0) /* Transmit and Receive FIFO Enable */
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#define FCR_ITL_1 (0)
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#define FCR_ITL_8 (FCR_ITL1)
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#define FCR_ITL_16 (FCR_ITL2)
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#define FCR_ITL_32 (FCR_ITL2|FCR_ITL1)
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#define LCR_DLAB (1 << 7) /* Divisor Latch Access Bit */
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#define LCR_SB (1 << 6) /* Set Break */
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#define LCR_STKYP (1 << 5) /* Sticky Parity */
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#define LCR_EPS (1 << 4) /* Even Parity Select */
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#define LCR_PEN (1 << 3) /* Parity Enable */
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#define LCR_STB (1 << 2) /* Stop Bit */
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#define LCR_WLS1 (1 << 1) /* Word Length Select */
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#define LCR_WLS0 (1 << 0) /* Word Length Select */
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#define LSR_FIFOE (1 << 7) /* FIFO Error Status */
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#define LSR_TEMT (1 << 6) /* Transmitter Empty */
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#define LSR_TDRQ (1 << 5) /* Transmit Data Request */
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#define LSR_BI (1 << 4) /* Break Interrupt */
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#define LSR_FE (1 << 3) /* Framing Error */
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#define LSR_PE (1 << 2) /* Parity Error */
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#define LSR_OE (1 << 1) /* Overrun Error */
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#define LSR_DR (1 << 0) /* Data Ready */
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#define MCR_LOOP (1 << 4)
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#define MCR_OUT2 (1 << 3) /* force MSR_DCD in loopback mode */
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#define MCR_OUT1 (1 << 2) /* force MSR_RI in loopback mode */
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#define MCR_RTS (1 << 1) /* Request to Send */
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#define MCR_DTR (1 << 0) /* Data Terminal Ready */
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#define MSR_DCD (1 << 7) /* Data Carrier Detect */
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#define MSR_RI (1 << 6) /* Ring Indicator */
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#define MSR_DSR (1 << 5) /* Data Set Ready */
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#define MSR_CTS (1 << 4) /* Clear To Send */
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#define MSR_DDCD (1 << 3) /* Delta Data Carrier Detect */
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#define MSR_TERI (1 << 2) /* Trailing Edge Ring Indicator */
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#define MSR_DDSR (1 << 1) /* Delta Data Set Ready */
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#define MSR_DCTS (1 << 0) /* Delta Clear To Send */
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/*
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* IrSR (Infrared Selection Register)
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*/
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#define STISR_RXPL (1 << 4) /* Receive Data Polarity */
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#define STISR_TXPL (1 << 3) /* Transmit Data Polarity */
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#define STISR_XMODE (1 << 2) /* Transmit Pulse Width Select */
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#define STISR_RCVEIR (1 << 1) /* Receiver SIR Enable */
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#define STISR_XMITIR (1 << 0) /* Transmitter SIR Enable */
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#endif /* __ASM_ARCH_REGS_UART_H */
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