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kernel_optimize_test/arch/m68k/include/asm/sun3mmu.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

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Definitions for Sun3 custom MMU.
*/
#ifndef __SUN3_MMU_H__
#define __SUN3_MMU_H__
#include <linux/types.h>
#include <asm/movs.h>
#include <asm/sun3-head.h>
/* MMU characteristics. */
#define SUN3_SEGMAPS_PER_CONTEXT 2048
#define SUN3_PMEGS_NUM 256
#define SUN3_CONTEXTS_NUM 8
#define SUN3_PMEG_SIZE_BITS 17
#define SUN3_PMEG_SIZE (1 << SUN3_PMEG_SIZE_BITS)
#define SUN3_PMEG_MASK (SUN3_PMEG_SIZE - 1)
#define SUN3_PTE_SIZE_BITS 13
#define SUN3_PTE_SIZE (1 << SUN3_PTE_SIZE_BITS)
#define SUN3_PTE_MASK (SUN3_PTE_SIZE - 1)
#define SUN3_CONTROL_MASK (0x0FFFFFFC)
#define SUN3_INVALID_PMEG 255
#define SUN3_INVALID_CONTEXT 255
#define AC_IDPROM 0x00000000 /* 34 ID PROM, R/O, byte, 32 bytes */
#define AC_PAGEMAP 0x10000000 /* 3 Pagemap R/W, long */
#define AC_SEGMAP 0x20000000 /* 3 Segment map, byte */
#define AC_CONTEXT 0x30000000 /* 34c current mmu-context */
#define AC_SENABLE 0x40000000 /* 34c system dvma/cache/reset enable reg*/
#define AC_UDVMA_ENB 0x50000000 /* 34 Not used on Sun boards, byte */
#define AC_BUS_ERROR 0x60000000 /* 34 Cleared on read, byte. */
#define AC_SYNC_ERR 0x60000000 /* c fault type */
#define AC_SYNC_VA 0x60000004 /* c fault virtual address */
#define AC_ASYNC_ERR 0x60000008 /* c asynchronous fault type */
#define AC_ASYNC_VA 0x6000000c /* c async fault virtual address */
#define AC_LEDS 0x70000000 /* 34 Zero turns on LEDs, byte */
#define AC_CACHETAGS 0x80000000 /* 34c direct access to the VAC tags */
#define AC_CACHEDDATA 0x90000000 /* 3 c direct access to the VAC data */
#define AC_UDVMA_MAP 0xD0000000 /* 4 Not used on Sun boards, byte */
#define AC_VME_VECTOR 0xE0000000 /* 4 For non-Autovector VME, byte */
#define AC_BOOT_SCC 0xF0000000 /* 34 bypass to access Zilog 8530. byte.*/
#define SUN3_PAGE_CHG_MASK (SUN3_PAGE_PGNUM_MASK \
| SUN3_PAGE_ACCESSED | SUN3_PAGE_MODIFIED)
/* Bus access type within PTE. */
#define SUN3_PAGE_TYPE_MASK (0x0c000000)
#define SUN3_PAGE_TYPE_MEMORY (0x00000000)
#define SUN3_PAGE_TYPE_IO (0x04000000)
#define SUN3_PAGE_TYPE_VME16 (0x08000000)
#define SUN3_PAGE_TYPE_VME32 (0x0c000000)
/* Mask for page number within PTE. */
#define SUN3_PAGE_PGNUM_MASK (0x0007FFFF)
/* Bits within bus-error register. */
#define SUN3_BUSERR_WATCHDOG (0x01)
#define SUN3_BUSERR_unused (0x02)
#define SUN3_BUSERR_FPAENERR (0x04)
#define SUN3_BUSERR_FPABERR (0x08)
#define SUN3_BUSERR_VMEBERR (0x10)
#define SUN3_BUSERR_TIMEOUT (0x20)
#define SUN3_BUSERR_PROTERR (0x40)
#define SUN3_BUSERR_INVALID (0x80)
#ifndef __ASSEMBLY__
/* Read bus error status register (implicitly clearing it). */
static inline unsigned char sun3_get_buserr(void)
{
unsigned char sfc, c;
GET_SFC (sfc);
SET_SFC (FC_CONTROL);
GET_CONTROL_BYTE (AC_BUS_ERROR, c);
SET_SFC (sfc);
return c;
}
/* Read segmap from hardware MMU. */
static inline unsigned long sun3_get_segmap(unsigned long addr)
{
register unsigned long entry;
unsigned char c, sfc;
GET_SFC (sfc);
SET_SFC (FC_CONTROL);
GET_CONTROL_BYTE (AC_SEGMAP | (addr & SUN3_CONTROL_MASK), c);
SET_SFC (sfc);
entry = c;
return entry;
}
/* Write segmap to hardware MMU. */
static inline void sun3_put_segmap(unsigned long addr, unsigned long entry)
{
unsigned char sfc;
GET_DFC (sfc);
SET_DFC (FC_CONTROL);
SET_CONTROL_BYTE (AC_SEGMAP | (addr & SUN3_CONTROL_MASK), entry);
SET_DFC (sfc);
return;
}
/* Read PTE from hardware MMU. */
static inline unsigned long sun3_get_pte(unsigned long addr)
{
register unsigned long entry;
unsigned char sfc;
GET_SFC (sfc);
SET_SFC (FC_CONTROL);
GET_CONTROL_WORD (AC_PAGEMAP | (addr & SUN3_CONTROL_MASK), entry);
SET_SFC (sfc);
return entry;
}
/* Write PTE to hardware MMU. */
static inline void sun3_put_pte(unsigned long addr, unsigned long entry)
{
unsigned char sfc;
GET_DFC (sfc);
SET_DFC (FC_CONTROL);
SET_CONTROL_WORD (AC_PAGEMAP | (addr & SUN3_CONTROL_MASK), entry);
SET_DFC (sfc);
return;
}
/* get current context */
static inline unsigned char sun3_get_context(void)
{
unsigned char sfc, c;
GET_SFC(sfc);
SET_SFC(FC_CONTROL);
GET_CONTROL_BYTE(AC_CONTEXT, c);
SET_SFC(sfc);
return c;
}
/* set alternate context */
static inline void sun3_put_context(unsigned char c)
{
unsigned char dfc;
GET_DFC(dfc);
SET_DFC(FC_CONTROL);
SET_CONTROL_BYTE(AC_CONTEXT, c);
SET_DFC(dfc);
return;
}
extern void __iomem *sun3_ioremap(unsigned long phys, unsigned long size,
unsigned long type);
extern int sun3_map_test(unsigned long addr, char *val);
#endif /* !__ASSEMBLY__ */
#endif /* !__SUN3_MMU_H__ */
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