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Linus Torvalds ead751507d License cleanup: add SPDX license identifiers to some files 
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>
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Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull initial SPDX identifiers from Greg KH:
 "License cleanup: add SPDX license identifiers to some files

  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>"

* tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  License cleanup: add SPDX license identifier to uapi header files with a license
  License cleanup: add SPDX license identifier to uapi header files with no license
  License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 10:04:46 -07:00

272 lines
6.4 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/alpha/kernel/sys_rawhide.c
*
* Copyright (C) 1995 David A Rusling
* Copyright (C) 1996 Jay A Estabrook
* Copyright (C) 1998, 1999 Richard Henderson
*
* Code supporting the RAWHIDE.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/ptrace.h>
#include <asm/dma.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_mcpcia.h>
#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
#include "pci_impl.h"
#include "machvec_impl.h"
/*
* HACK ALERT! only the boot cpu is used for interrupts.
*/
/* Note mask bit is true for ENABLED irqs. */
static unsigned int hose_irq_masks[4] = {
0xff0000, 0xfe0000, 0xff0000, 0xff0000
};
static unsigned int cached_irq_masks[4];
DEFINE_SPINLOCK(rawhide_irq_lock);
static inline void
rawhide_update_irq_hw(int hose, int mask)
{
*(vuip)MCPCIA_INT_MASK0(MCPCIA_HOSE2MID(hose)) = mask;
mb();
*(vuip)MCPCIA_INT_MASK0(MCPCIA_HOSE2MID(hose));
}
#define hose_exists(h) \
(((h) < MCPCIA_MAX_HOSES) && (cached_irq_masks[(h)] != 0))
static inline void
rawhide_enable_irq(struct irq_data *d)
{
unsigned int mask, hose;
unsigned int irq = d->irq;
irq -= 16;
hose = irq / 24;
if (!hose_exists(hose)) /* if hose non-existent, exit */
return;
irq -= hose * 24;
mask = 1 << irq;
spin_lock(&rawhide_irq_lock);
mask |= cached_irq_masks[hose];
cached_irq_masks[hose] = mask;
rawhide_update_irq_hw(hose, mask);
spin_unlock(&rawhide_irq_lock);
}
static void
rawhide_disable_irq(struct irq_data *d)
{
unsigned int mask, hose;
unsigned int irq = d->irq;
irq -= 16;
hose = irq / 24;
if (!hose_exists(hose)) /* if hose non-existent, exit */
return;
irq -= hose * 24;
mask = ~(1 << irq) | hose_irq_masks[hose];
spin_lock(&rawhide_irq_lock);
mask &= cached_irq_masks[hose];
cached_irq_masks[hose] = mask;
rawhide_update_irq_hw(hose, mask);
spin_unlock(&rawhide_irq_lock);
}
static void
rawhide_mask_and_ack_irq(struct irq_data *d)
{
unsigned int mask, mask1, hose;
unsigned int irq = d->irq;
irq -= 16;
hose = irq / 24;
if (!hose_exists(hose)) /* if hose non-existent, exit */
return;
irq -= hose * 24;
mask1 = 1 << irq;
mask = ~mask1 | hose_irq_masks[hose];
spin_lock(&rawhide_irq_lock);
mask &= cached_irq_masks[hose];
cached_irq_masks[hose] = mask;
rawhide_update_irq_hw(hose, mask);
/* Clear the interrupt. */
*(vuip)MCPCIA_INT_REQ(MCPCIA_HOSE2MID(hose)) = mask1;
spin_unlock(&rawhide_irq_lock);
}
static struct irq_chip rawhide_irq_type = {
.name = "RAWHIDE",
.irq_unmask = rawhide_enable_irq,
.irq_mask = rawhide_disable_irq,
.irq_mask_ack = rawhide_mask_and_ack_irq,
};
static void
rawhide_srm_device_interrupt(unsigned long vector)
{
int irq;
irq = (vector - 0x800) >> 4;
/*
* The RAWHIDE SRM console reports PCI interrupts with a vector
* 0x80 *higher* than one might expect, as PCI IRQ 0 (ie bit 0)
* shows up as IRQ 24, etc, etc. We adjust it down by 8 to have
* it line up with the actual bit numbers from the REQ registers,
* which is how we manage the interrupts/mask. Sigh...
*
* Also, PCI #1 interrupts are offset some more... :-(
*/
if (irq == 52) {
/* SCSI on PCI1 is special. */
irq = 72;
}
/* Adjust by which hose it is from. */
irq -= ((irq + 16) >> 2) & 0x38;
handle_irq(irq);
}
static void __init
rawhide_init_irq(void)
{
struct pci_controller *hose;
long i;
mcpcia_init_hoses();
/* Clear them all; only hoses that exist will be non-zero. */
for (i = 0; i < MCPCIA_MAX_HOSES; i++) cached_irq_masks[i] = 0;
for (hose = hose_head; hose; hose = hose->next) {
unsigned int h = hose->index;
unsigned int mask = hose_irq_masks[h];
cached_irq_masks[h] = mask;
*(vuip)MCPCIA_INT_MASK0(MCPCIA_HOSE2MID(h)) = mask;
*(vuip)MCPCIA_INT_MASK1(MCPCIA_HOSE2MID(h)) = 0;
}
for (i = 16; i < 128; ++i) {
irq_set_chip_and_handler(i, &rawhide_irq_type,
handle_level_irq);
irq_set_status_flags(i, IRQ_LEVEL);
}
init_i8259a_irqs();
common_init_isa_dma();
}
/*
* PCI Fixup configuration.
*
* Summary @ MCPCIA_PCI0_INT_REQ:
* Bit Meaning
* 0 Interrupt Line A from slot 2 PCI0
* 1 Interrupt Line B from slot 2 PCI0
* 2 Interrupt Line C from slot 2 PCI0
* 3 Interrupt Line D from slot 2 PCI0
* 4 Interrupt Line A from slot 3 PCI0
* 5 Interrupt Line B from slot 3 PCI0
* 6 Interrupt Line C from slot 3 PCI0
* 7 Interrupt Line D from slot 3 PCI0
* 8 Interrupt Line A from slot 4 PCI0
* 9 Interrupt Line B from slot 4 PCI0
* 10 Interrupt Line C from slot 4 PCI0
* 11 Interrupt Line D from slot 4 PCI0
* 12 Interrupt Line A from slot 5 PCI0
* 13 Interrupt Line B from slot 5 PCI0
* 14 Interrupt Line C from slot 5 PCI0
* 15 Interrupt Line D from slot 5 PCI0
* 16 EISA interrupt (PCI 0) or SCSI interrupt (PCI 1)
* 17-23 NA
*
* IdSel
* 1 EISA bridge (PCI bus 0 only)
* 2 PCI option slot 2
* 3 PCI option slot 3
* 4 PCI option slot 4
* 5 PCI option slot 5
*
*/
static int
rawhide_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
static char irq_tab[5][5] = {
/*INT INTA INTB INTC INTD */
{ 16+16, 16+16, 16+16, 16+16, 16+16}, /* IdSel 1 SCSI PCI 1 */
{ 16+ 0, 16+ 0, 16+ 1, 16+ 2, 16+ 3}, /* IdSel 2 slot 2 */
{ 16+ 4, 16+ 4, 16+ 5, 16+ 6, 16+ 7}, /* IdSel 3 slot 3 */
{ 16+ 8, 16+ 8, 16+ 9, 16+10, 16+11}, /* IdSel 4 slot 4 */
{ 16+12, 16+12, 16+13, 16+14, 16+15} /* IdSel 5 slot 5 */
};
const long min_idsel = 1, max_idsel = 5, irqs_per_slot = 5;
struct pci_controller *hose = dev->sysdata;
int irq = COMMON_TABLE_LOOKUP;
if (irq >= 0)
irq += 24 * hose->index;
return irq;
}
/*
* The System Vector
*/
struct alpha_machine_vector rawhide_mv __initmv = {
.vector_name = "Rawhide",
DO_EV5_MMU,
DO_DEFAULT_RTC,
DO_MCPCIA_IO,
.machine_check = mcpcia_machine_check,
.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
.min_io_address = DEFAULT_IO_BASE,
.min_mem_address = MCPCIA_DEFAULT_MEM_BASE,
.pci_dac_offset = MCPCIA_DAC_OFFSET,
.nr_irqs = 128,
.device_interrupt = rawhide_srm_device_interrupt,
.init_arch = mcpcia_init_arch,
.init_irq = rawhide_init_irq,
.init_rtc = common_init_rtc,
.init_pci = common_init_pci,
.kill_arch = NULL,
.pci_map_irq = rawhide_map_irq,
.pci_swizzle = common_swizzle,
};
ALIAS_MV(rawhide)
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