Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-18 10:01:43 +00:00
Code Issues Packages Projects Releases Wiki Activity
4e3d322058
linux/drivers/spi/spi-cavium.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

334 lines
7.2 KiB
C
Raw Blame History

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __SPI_CAVIUM_H
#define __SPI_CAVIUM_H
#include <linux/clk.h>
#define OCTEON_SPI_MAX_BYTES 9
#define OCTEON_SPI_MAX_CLOCK_HZ 16000000
struct octeon_spi_regs {
int config;
int status;
int tx;
int data;
};
struct octeon_spi {
void __iomem *register_base;
u64 last_cfg;
u64 cs_enax;
int sys_freq;
struct octeon_spi_regs regs;
struct clk *clk;
};
#define OCTEON_SPI_CFG(x) (x->regs.config)
#define OCTEON_SPI_STS(x) (x->regs.status)
#define OCTEON_SPI_TX(x) (x->regs.tx)
#define OCTEON_SPI_DAT0(x) (x->regs.data)
int octeon_spi_transfer_one_message(struct spi_master *master,
struct spi_message *msg);
/* MPI register descriptions */
#define CVMX_MPI_CFG (CVMX_ADD_IO_SEG(0x0001070000001000ull))
#define CVMX_MPI_DATX(offset) (CVMX_ADD_IO_SEG(0x0001070000001080ull) + ((offset) & 15) * 8)
#define CVMX_MPI_STS (CVMX_ADD_IO_SEG(0x0001070000001008ull))
#define CVMX_MPI_TX (CVMX_ADD_IO_SEG(0x0001070000001010ull))
union cvmx_mpi_cfg {
uint64_t u64;
struct cvmx_mpi_cfg_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t csena3:1;
uint64_t csena2:1;
uint64_t csena1:1;
uint64_t csena0:1;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t csena:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t csena:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t csena0:1;
uint64_t csena1:1;
uint64_t csena2:1;
uint64_t csena3:1;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} s;
struct cvmx_mpi_cfg_cn30xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t reserved_12_15:4;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t csena:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t csena:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t reserved_12_15:4;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn30xx;
struct cvmx_mpi_cfg_cn31xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t reserved_11_15:5;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t csena:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t csena:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t reserved_11_15:5;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn31xx;
struct cvmx_mpi_cfg_cn30xx cn50xx;
struct cvmx_mpi_cfg_cn61xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t reserved_14_15:2;
uint64_t csena1:1;
uint64_t csena0:1;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t reserved_6_6:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t reserved_6_6:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t csena0:1;
uint64_t csena1:1;
uint64_t reserved_14_15:2;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn61xx;
struct cvmx_mpi_cfg_cn66xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t csena3:1;
uint64_t csena2:1;
uint64_t reserved_12_13:2;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t reserved_6_6:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t reserved_6_6:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t reserved_12_13:2;
uint64_t csena2:1;
uint64_t csena3:1;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn66xx;
struct cvmx_mpi_cfg_cn61xx cnf71xx;
};
union cvmx_mpi_datx {
uint64_t u64;
struct cvmx_mpi_datx_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_8_63:56;
uint64_t data:8;
#else
uint64_t data:8;
uint64_t reserved_8_63:56;
#endif
} s;
struct cvmx_mpi_datx_s cn30xx;
struct cvmx_mpi_datx_s cn31xx;
struct cvmx_mpi_datx_s cn50xx;
struct cvmx_mpi_datx_s cn61xx;
struct cvmx_mpi_datx_s cn66xx;
struct cvmx_mpi_datx_s cnf71xx;
};
union cvmx_mpi_sts {
uint64_t u64;
struct cvmx_mpi_sts_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_13_63:51;
uint64_t rxnum:5;
uint64_t reserved_1_7:7;
uint64_t busy:1;
#else
uint64_t busy:1;
uint64_t reserved_1_7:7;
uint64_t rxnum:5;
uint64_t reserved_13_63:51;
#endif
} s;
struct cvmx_mpi_sts_s cn30xx;
struct cvmx_mpi_sts_s cn31xx;
struct cvmx_mpi_sts_s cn50xx;
struct cvmx_mpi_sts_s cn61xx;
struct cvmx_mpi_sts_s cn66xx;
struct cvmx_mpi_sts_s cnf71xx;
};
union cvmx_mpi_tx {
uint64_t u64;
struct cvmx_mpi_tx_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_22_63:42;
uint64_t csid:2;
uint64_t reserved_17_19:3;
uint64_t leavecs:1;
uint64_t reserved_13_15:3;
uint64_t txnum:5;
uint64_t reserved_5_7:3;
uint64_t totnum:5;
#else
uint64_t totnum:5;
uint64_t reserved_5_7:3;
uint64_t txnum:5;
uint64_t reserved_13_15:3;
uint64_t leavecs:1;
uint64_t reserved_17_19:3;
uint64_t csid:2;
uint64_t reserved_22_63:42;
#endif
} s;
struct cvmx_mpi_tx_cn30xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_17_63:47;
uint64_t leavecs:1;
uint64_t reserved_13_15:3;
uint64_t txnum:5;
uint64_t reserved_5_7:3;
uint64_t totnum:5;
#else
uint64_t totnum:5;
uint64_t reserved_5_7:3;
uint64_t txnum:5;
uint64_t reserved_13_15:3;
uint64_t leavecs:1;
uint64_t reserved_17_63:47;
#endif
} cn30xx;
struct cvmx_mpi_tx_cn30xx cn31xx;
struct cvmx_mpi_tx_cn30xx cn50xx;
struct cvmx_mpi_tx_cn61xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_21_63:43;
uint64_t csid:1;
uint64_t reserved_17_19:3;
uint64_t leavecs:1;
uint64_t reserved_13_15:3;
uint64_t txnum:5;
uint64_t reserved_5_7:3;
uint64_t totnum:5;
#else
uint64_t totnum:5;
uint64_t reserved_5_7:3;
uint64_t txnum:5;
uint64_t reserved_13_15:3;
uint64_t leavecs:1;
uint64_t reserved_17_19:3;
uint64_t csid:1;
uint64_t reserved_21_63:43;
#endif
} cn61xx;
struct cvmx_mpi_tx_s cn66xx;
struct cvmx_mpi_tx_cn61xx cnf71xx;
};
#endif /* __SPI_CAVIUM_H */
Reference in New Issue View Git Blame Copy Permalink