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 08:07:57 -06:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0 */
|
2007-04-29 22:06:25 -06:00
|
|
|
#ifndef _ASM_POWERPC_MMU_44X_H_
|
|
|
|
|
#define _ASM_POWERPC_MMU_44X_H_
|
|
|
|
|
/*
|
|
|
|
|
* PPC440 support
|
|
|
|
|
*/
|
|
|
|
|
|
2018-07-05 10:24:57 -06:00
|
|
|
#include <asm/asm-const.h>
|
2008-12-10 18:55:41 -07:00
|
|
|
|
2007-04-29 22:06:25 -06:00
|
|
|
#define PPC44x_MMUCR_TID 0x000000ff
|
|
|
|
|
#define PPC44x_MMUCR_STS 0x00010000
|
|
|
|
|
|
|
|
|
|
#define PPC44x_TLB_PAGEID 0
|
|
|
|
|
#define PPC44x_TLB_XLAT 1
|
|
|
|
|
#define PPC44x_TLB_ATTRIB 2
|
|
|
|
|
|
|
|
|
|
/* Page identification fields */
|
|
|
|
|
#define PPC44x_TLB_EPN_MASK 0xfffffc00 /* Effective Page Number */
|
|
|
|
|
#define PPC44x_TLB_VALID 0x00000200 /* Valid flag */
|
|
|
|
|
#define PPC44x_TLB_TS 0x00000100 /* Translation address space */
|
|
|
|
|
#define PPC44x_TLB_1K 0x00000000 /* Page sizes */
|
|
|
|
|
#define PPC44x_TLB_4K 0x00000010
|
|
|
|
|
#define PPC44x_TLB_16K 0x00000020
|
|
|
|
|
#define PPC44x_TLB_64K 0x00000030
|
|
|
|
|
#define PPC44x_TLB_256K 0x00000040
|
|
|
|
|
#define PPC44x_TLB_1M 0x00000050
|
|
|
|
|
#define PPC44x_TLB_16M 0x00000070
|
|
|
|
|
#define PPC44x_TLB_256M 0x00000090
|
|
|
|
|
|
|
|
|
|
/* Translation fields */
|
|
|
|
|
#define PPC44x_TLB_RPN_MASK 0xfffffc00 /* Real Page Number */
|
|
|
|
|
#define PPC44x_TLB_ERPN_MASK 0x0000000f
|
|
|
|
|
|
|
|
|
|
/* Storage attribute and access control fields */
|
|
|
|
|
#define PPC44x_TLB_ATTR_MASK 0x0000ff80
|
|
|
|
|
#define PPC44x_TLB_U0 0x00008000 /* User 0 */
|
|
|
|
|
#define PPC44x_TLB_U1 0x00004000 /* User 1 */
|
|
|
|
|
#define PPC44x_TLB_U2 0x00002000 /* User 2 */
|
|
|
|
|
#define PPC44x_TLB_U3 0x00001000 /* User 3 */
|
|
|
|
|
#define PPC44x_TLB_W 0x00000800 /* Caching is write-through */
|
|
|
|
|
#define PPC44x_TLB_I 0x00000400 /* Caching is inhibited */
|
|
|
|
|
#define PPC44x_TLB_M 0x00000200 /* Memory is coherent */
|
|
|
|
|
#define PPC44x_TLB_G 0x00000100 /* Memory is guarded */
|
2010-03-05 03:43:12 -07:00
|
|
|
#define PPC44x_TLB_E 0x00000080 /* Memory is little endian */
|
2007-04-29 22:06:25 -06:00
|
|
|
|
|
|
|
|
#define PPC44x_TLB_PERM_MASK 0x0000003f
|
|
|
|
|
#define PPC44x_TLB_UX 0x00000020 /* User execution */
|
|
|
|
|
#define PPC44x_TLB_UW 0x00000010 /* User write */
|
|
|
|
|
#define PPC44x_TLB_UR 0x00000008 /* User read */
|
|
|
|
|
#define PPC44x_TLB_SX 0x00000004 /* Super execution */
|
|
|
|
|
#define PPC44x_TLB_SW 0x00000002 /* Super write */
|
|
|
|
|
#define PPC44x_TLB_SR 0x00000001 /* Super read */
|
|
|
|
|
|
|
|
|
|
/* Number of TLB entries */
|
|
|
|
|
#define PPC44x_TLB_SIZE 64
|
|
|
|
|
|
2010-03-05 03:43:12 -07:00
|
|
|
/* 47x bits */
|
|
|
|
|
#define PPC47x_MMUCR_TID 0x0000ffff
|
|
|
|
|
#define PPC47x_MMUCR_STS 0x00010000
|
|
|
|
|
|
|
|
|
|
/* Page identification fields */
|
|
|
|
|
#define PPC47x_TLB0_EPN_MASK 0xfffff000 /* Effective Page Number */
|
|
|
|
|
#define PPC47x_TLB0_VALID 0x00000800 /* Valid flag */
|
|
|
|
|
#define PPC47x_TLB0_TS 0x00000400 /* Translation address space */
|
|
|
|
|
#define PPC47x_TLB0_4K 0x00000000
|
|
|
|
|
#define PPC47x_TLB0_16K 0x00000010
|
|
|
|
|
#define PPC47x_TLB0_64K 0x00000030
|
|
|
|
|
#define PPC47x_TLB0_1M 0x00000070
|
|
|
|
|
#define PPC47x_TLB0_16M 0x000000f0
|
|
|
|
|
#define PPC47x_TLB0_256M 0x000001f0
|
|
|
|
|
#define PPC47x_TLB0_1G 0x000003f0
|
|
|
|
|
#define PPC47x_TLB0_BOLTED_R 0x00000008 /* tlbre only */
|
|
|
|
|
|
|
|
|
|
/* Translation fields */
|
|
|
|
|
#define PPC47x_TLB1_RPN_MASK 0xfffff000 /* Real Page Number */
|
|
|
|
|
#define PPC47x_TLB1_ERPN_MASK 0x000003ff
|
|
|
|
|
|
|
|
|
|
/* Storage attribute and access control fields */
|
|
|
|
|
#define PPC47x_TLB2_ATTR_MASK 0x0003ff80
|
|
|
|
|
#define PPC47x_TLB2_IL1I 0x00020000 /* Memory is guarded */
|
|
|
|
|
#define PPC47x_TLB2_IL1D 0x00010000 /* Memory is guarded */
|
|
|
|
|
#define PPC47x_TLB2_U0 0x00008000 /* User 0 */
|
|
|
|
|
#define PPC47x_TLB2_U1 0x00004000 /* User 1 */
|
|
|
|
|
#define PPC47x_TLB2_U2 0x00002000 /* User 2 */
|
|
|
|
|
#define PPC47x_TLB2_U3 0x00001000 /* User 3 */
|
|
|
|
|
#define PPC47x_TLB2_W 0x00000800 /* Caching is write-through */
|
|
|
|
|
#define PPC47x_TLB2_I 0x00000400 /* Caching is inhibited */
|
|
|
|
|
#define PPC47x_TLB2_M 0x00000200 /* Memory is coherent */
|
|
|
|
|
#define PPC47x_TLB2_G 0x00000100 /* Memory is guarded */
|
|
|
|
|
#define PPC47x_TLB2_E 0x00000080 /* Memory is little endian */
|
|
|
|
|
#define PPC47x_TLB2_PERM_MASK 0x0000003f
|
|
|
|
|
#define PPC47x_TLB2_UX 0x00000020 /* User execution */
|
|
|
|
|
#define PPC47x_TLB2_UW 0x00000010 /* User write */
|
|
|
|
|
#define PPC47x_TLB2_UR 0x00000008 /* User read */
|
|
|
|
|
#define PPC47x_TLB2_SX 0x00000004 /* Super execution */
|
|
|
|
|
#define PPC47x_TLB2_SW 0x00000002 /* Super write */
|
|
|
|
|
#define PPC47x_TLB2_SR 0x00000001 /* Super read */
|
|
|
|
|
#define PPC47x_TLB2_U_RWX (PPC47x_TLB2_UX|PPC47x_TLB2_UW|PPC47x_TLB2_UR)
|
|
|
|
|
#define PPC47x_TLB2_S_RWX (PPC47x_TLB2_SX|PPC47x_TLB2_SW|PPC47x_TLB2_SR)
|
|
|
|
|
#define PPC47x_TLB2_S_RW (PPC47x_TLB2_SW | PPC47x_TLB2_SR)
|
|
|
|
|
#define PPC47x_TLB2_IMG (PPC47x_TLB2_I | PPC47x_TLB2_M | PPC47x_TLB2_G)
|
|
|
|
|
|
2007-04-29 22:06:25 -06:00
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
|
|
2008-04-16 22:28:06 -06:00
|
|
|
extern unsigned int tlb_44x_hwater;
|
2008-12-02 14:51:54 -07:00
|
|
|
extern unsigned int tlb_44x_index;
|
2008-04-16 22:28:06 -06:00
|
|
|
|
2007-04-29 22:06:25 -06:00
|
|
|
typedef struct {
|
2008-12-18 12:13:29 -07:00
|
|
|
unsigned int id;
|
|
|
|
|
unsigned int active;
|
|
|
|
|
unsigned long vdso_base;
|
2007-04-29 22:06:25 -06:00
|
|
|
} mm_context_t;
|
|
|
|
|
|
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
|
|
2007-05-07 20:59:31 -06:00
|
|
|
#ifndef CONFIG_PPC_EARLY_DEBUG_44x
|
2007-04-29 22:06:25 -06:00
|
|
|
#define PPC44x_EARLY_TLBS 1
|
2007-05-07 20:59:31 -06:00
|
|
|
#else
|
|
|
|
|
#define PPC44x_EARLY_TLBS 2
|
|
|
|
|
#define PPC44x_EARLY_DEBUG_VIRTADDR (ASM_CONST(0xf0000000) \
|
|
|
|
|
| (ASM_CONST(CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW) & 0xffff))
|
|
|
|
|
#endif
|
2007-04-29 22:06:25 -06:00
|
|
|
|
|
|
|
|
/* Size of the TLBs used for pinning in lowmem */
|
|
|
|
|
#define PPC_PIN_SIZE (1 << 28) /* 256M */
|
|
|
|
|
|
2018-07-05 10:25:13 -06:00
|
|
|
#if defined(CONFIG_PPC_4K_PAGES)
|
2008-12-10 18:55:41 -07:00
|
|
|
#define PPC44x_TLBE_SIZE PPC44x_TLB_4K
|
2010-03-05 03:43:12 -07:00
|
|
|
#define PPC47x_TLBE_SIZE PPC47x_TLB0_4K
|
2009-07-23 17:15:47 -06:00
|
|
|
#define mmu_virtual_psize MMU_PAGE_4K
|
2018-07-05 10:25:13 -06:00
|
|
|
#elif defined(CONFIG_PPC_16K_PAGES)
|
2008-12-10 18:55:41 -07:00
|
|
|
#define PPC44x_TLBE_SIZE PPC44x_TLB_16K
|
2010-03-05 03:43:12 -07:00
|
|
|
#define PPC47x_TLBE_SIZE PPC47x_TLB0_16K
|
2009-07-23 17:15:47 -06:00
|
|
|
#define mmu_virtual_psize MMU_PAGE_16K
|
2018-07-05 10:25:13 -06:00
|
|
|
#elif defined(CONFIG_PPC_64K_PAGES)
|
2008-12-10 18:55:41 -07:00
|
|
|
#define PPC44x_TLBE_SIZE PPC44x_TLB_64K
|
2010-03-05 03:43:12 -07:00
|
|
|
#define PPC47x_TLBE_SIZE PPC47x_TLB0_64K
|
2009-07-23 17:15:47 -06:00
|
|
|
#define mmu_virtual_psize MMU_PAGE_64K
|
2018-07-05 10:25:13 -06:00
|
|
|
#elif defined(CONFIG_PPC_256K_PAGES)
|
powerpc/44x: Support for 256KB PAGE_SIZE
This patch adds support for 256KB pages on ppc44x-based boards.
For simplification of implementation with 256KB pages we still assume
2-level paging. As a side effect this leads to wasting extra memory space
reserved for PTE tables: only 1/4 of pages allocated for PTEs are
actually used. But this may be an acceptable trade-off to achieve the
high performance we have with big PAGE_SIZEs in some applications (e.g.
RAID).
Also with 256KB PAGE_SIZE we increase THREAD_SIZE up to 32KB to minimize
the risk of stack overflows in the cases of on-stack arrays, which size
depends on the page size (e.g. multipage BIOs, NTFS, etc.).
With 256KB PAGE_SIZE we need to decrease the PKMAP_ORDER at least down
to 9, otherwise all high memory (2 ^ 10 * PAGE_SIZE == 256MB) we'll be
occupied by PKMAP addresses leaving no place for vmalloc. We do not
separate PKMAP_ORDER for 256K from 16K/64K PAGE_SIZE here; actually that
value of 10 in support for 16K/64K had been selected rather intuitively.
Thus now for all cases of PAGE_SIZE on ppc44x (including the default, 4KB,
one) we have 512 pages for PKMAP.
Because ELF standard supports only page sizes up to 64K, then you should
use binutils later than 2.17.50.0.3 with '-zmax-page-size' set to 256K
for building applications, which are to be run with the 256KB-page sized
kernel. If using the older binutils, then you should patch them like follows:
--- binutils/bfd/elf32-ppc.c.orig
+++ binutils/bfd/elf32-ppc.c
-#define ELF_MAXPAGESIZE 0x10000
+#define ELF_MAXPAGESIZE 0x40000
One more restriction we currently have with 256KB page sizes is inability
to use shmem safely, so, for now, the 256KB is available only if you turn
the CONFIG_SHMEM option off (another variant is to use BROKEN).
Though, if you need shmem with 256KB pages, you can always remove the !SHMEM
dependency in 'config PPC_256K_PAGES', and use the workaround available here:
http://lkml.org/lkml/2008/12/19/20
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-01-28 18:40:44 -07:00
|
|
|
#define PPC44x_TLBE_SIZE PPC44x_TLB_256K
|
2009-07-23 17:15:47 -06:00
|
|
|
#define mmu_virtual_psize MMU_PAGE_256K
|
2008-12-10 18:55:41 -07:00
|
|
|
#else
|
|
|
|
|
#error "Unsupported PAGE_SIZE"
|
|
|
|
|
#endif
|
|
|
|
|
|
2009-07-23 17:15:47 -06:00
|
|
|
#define mmu_linear_psize MMU_PAGE_256M
|
|
|
|
|
|
2008-12-10 18:55:41 -07:00
|
|
|
#define PPC44x_PGD_OFF_SHIFT (32 - PGDIR_SHIFT + PGD_T_LOG2)
|
|
|
|
|
#define PPC44x_PGD_OFF_MASK_BIT (PGDIR_SHIFT - PGD_T_LOG2)
|
|
|
|
|
#define PPC44x_PTE_ADD_SHIFT (32 - PGDIR_SHIFT + PTE_SHIFT + PTE_T_LOG2)
|
|
|
|
|
#define PPC44x_PTE_ADD_MASK_BIT (32 - PTE_T_LOG2 - PTE_SHIFT)
|
|
|
|
|
|
2007-04-29 22:06:25 -06:00
|
|
|
#endif /* _ASM_POWERPC_MMU_44X_H_ */
|