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linux/arch/ia64/include/asm/hw_irq.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

188 lines
6.3 KiB
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_IA64_HW_IRQ_H
#define _ASM_IA64_HW_IRQ_H
/*
* Copyright (C) 2001-2003 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/profile.h>
#include <asm/machvec.h>
#include <asm/ptrace.h>
#include <asm/smp.h>
typedef u8 ia64_vector;
/*
* 0 special
*
* 1,3-14 are reserved from firmware
*
* 16-255 (vectored external interrupts) are available
*
* 15 spurious interrupt (see IVR)
*
* 16 lowest priority, 255 highest priority
*
* 15 classes of 16 interrupts each.
*/
#define IA64_MIN_VECTORED_IRQ 16
#define IA64_MAX_VECTORED_IRQ 255
#define IA64_NUM_VECTORS 256
#define AUTO_ASSIGN -1
#define IA64_SPURIOUS_INT_VECTOR 0x0f
/*
* Vectors 0x10-0x1f are used for low priority interrupts, e.g. CMCI.
*/
#define IA64_CPEP_VECTOR 0x1c /* corrected platform error polling vector */
#define IA64_CMCP_VECTOR 0x1d /* corrected machine-check polling vector */
#define IA64_CPE_VECTOR 0x1e /* corrected platform error interrupt vector */
#define IA64_CMC_VECTOR 0x1f /* corrected machine-check interrupt vector */
/*
* Vectors 0x20-0x2f are reserved for legacy ISA IRQs.
* Use vectors 0x30-0xe7 as the default device vector range for ia64.
* Platforms may choose to reduce this range in platform_irq_setup, but the
* platform range must fall within
* [IA64_DEF_FIRST_DEVICE_VECTOR..IA64_DEF_LAST_DEVICE_VECTOR]
*/
extern int ia64_first_device_vector;
extern int ia64_last_device_vector;
#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined (CONFIG_IA64_DIG))
/* Reserve the lower priority vector than device vectors for "move IRQ" IPI */
#define IA64_IRQ_MOVE_VECTOR 0x30 /* "move IRQ" IPI */
#define IA64_DEF_FIRST_DEVICE_VECTOR 0x31
#else
#define IA64_DEF_FIRST_DEVICE_VECTOR 0x30
#endif
#define IA64_DEF_LAST_DEVICE_VECTOR 0xe7
#define IA64_FIRST_DEVICE_VECTOR ia64_first_device_vector
#define IA64_LAST_DEVICE_VECTOR ia64_last_device_vector
#define IA64_MAX_DEVICE_VECTORS (IA64_DEF_LAST_DEVICE_VECTOR - IA64_DEF_FIRST_DEVICE_VECTOR + 1)
#define IA64_NUM_DEVICE_VECTORS (IA64_LAST_DEVICE_VECTOR - IA64_FIRST_DEVICE_VECTOR + 1)
#define IA64_MCA_RENDEZ_VECTOR 0xe8 /* MCA rendez interrupt */
#define IA64_PERFMON_VECTOR 0xee /* performance monitor interrupt vector */
#define IA64_TIMER_VECTOR 0xef /* use highest-prio group 15 interrupt for timer */
#define IA64_MCA_WAKEUP_VECTOR 0xf0 /* MCA wakeup (must be >MCA_RENDEZ_VECTOR) */
#define IA64_IPI_LOCAL_TLB_FLUSH 0xfc /* SMP flush local TLB */
#define IA64_IPI_RESCHEDULE 0xfd /* SMP reschedule */
#define IA64_IPI_VECTOR 0xfe /* inter-processor interrupt vector */
/* Used for encoding redirected irqs */
#define IA64_IRQ_REDIRECTED (1 << 31)
/* IA64 inter-cpu interrupt related definitions */
#define IA64_IPI_DEFAULT_BASE_ADDR 0xfee00000
/* Delivery modes for inter-cpu interrupts */
enum {
IA64_IPI_DM_INT = 0x0, /* pend an external interrupt */
IA64_IPI_DM_PMI = 0x2, /* pend a PMI */
IA64_IPI_DM_NMI = 0x4, /* pend an NMI (vector 2) */
IA64_IPI_DM_INIT = 0x5, /* pend an INIT interrupt */
IA64_IPI_DM_EXTINT = 0x7, /* pend an 8259-compatible interrupt. */
};
extern __u8 isa_irq_to_vector_map[16];
#define isa_irq_to_vector(x) isa_irq_to_vector_map[(x)]
struct irq_cfg {
ia64_vector vector;
cpumask_t domain;
cpumask_t old_domain;
unsigned move_cleanup_count;
u8 move_in_progress : 1;
};
extern spinlock_t vector_lock;
extern struct irq_cfg irq_cfg[NR_IRQS];
#define irq_to_domain(x) irq_cfg[(x)].domain
DECLARE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq);
extern struct irq_chip irq_type_ia64_lsapic; /* CPU-internal interrupt controller */
#define ia64_register_ipi ia64_native_register_ipi
#define assign_irq_vector ia64_native_assign_irq_vector
#define free_irq_vector ia64_native_free_irq_vector
#define register_percpu_irq ia64_native_register_percpu_irq
#define ia64_resend_irq ia64_native_resend_irq
extern void ia64_native_register_ipi(void);
extern int bind_irq_vector(int irq, int vector, cpumask_t domain);
extern int ia64_native_assign_irq_vector (int irq); /* allocate a free vector */
extern void ia64_native_free_irq_vector (int vector);
extern int reserve_irq_vector (int vector);
extern void __setup_vector_irq(int cpu);
extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
extern void ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action);
extern void destroy_and_reserve_irq (unsigned int irq);
#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG))
extern int irq_prepare_move(int irq, int cpu);
extern void irq_complete_move(unsigned int irq);
#else
static inline int irq_prepare_move(int irq, int cpu) { return 0; }
static inline void irq_complete_move(unsigned int irq) {}
#endif
static inline void ia64_native_resend_irq(unsigned int vector)
{
platform_send_ipi(smp_processor_id(), vector, IA64_IPI_DM_INT, 0);
}
/*
* Default implementations for the irq-descriptor API:
*/
#ifndef CONFIG_IA64_GENERIC
static inline ia64_vector __ia64_irq_to_vector(int irq)
{
return irq_cfg[irq].vector;
}
static inline unsigned int
__ia64_local_vector_to_irq (ia64_vector vec)
{
return __this_cpu_read(vector_irq[vec]);
}
#endif
/*
* Next follows the irq descriptor interface. On IA-64, each CPU supports 256 interrupt
* vectors. On smaller systems, there is a one-to-one correspondence between interrupt
* vectors and the Linux irq numbers. However, larger systems may have multiple interrupt
* domains meaning that the translation from vector number to irq number depends on the
* interrupt domain that a CPU belongs to. This API abstracts such platform-dependent
* differences and provides a uniform means to translate between vector and irq numbers
* and to obtain the irq descriptor for a given irq number.
*/
/* Extract the IA-64 vector that corresponds to IRQ. */
static inline ia64_vector
irq_to_vector (int irq)
{
return platform_irq_to_vector(irq);
}
/*
* Convert the local IA-64 vector to the corresponding irq number. This translation is
* done in the context of the interrupt domain that the currently executing CPU belongs
* to.
*/
static inline unsigned int
local_vector_to_irq (ia64_vector vec)
{
return platform_local_vector_to_irq(vec);
}
#endif /* _ASM_IA64_HW_IRQ_H */
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