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linux/arch/ia64/include/asm/mca.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

189 lines
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* File: mca.h
* Purpose: Machine check handling specific defines
*
* Copyright (C) 1999, 2004 Silicon Graphics, Inc.
* Copyright (C) Vijay Chander <vijay@engr.sgi.com>
* Copyright (C) Srinivasa Thirumalachar <sprasad@engr.sgi.com>
* Copyright (C) Russ Anderson <rja@sgi.com>
*/
#ifndef _ASM_IA64_MCA_H
#define _ASM_IA64_MCA_H
#if !defined(__ASSEMBLY__)
#include <linux/interrupt.h>
#include <linux/types.h>
#include <asm/param.h>
#include <asm/sal.h>
#include <asm/processor.h>
#include <asm/mca_asm.h>
#define IA64_MCA_RENDEZ_TIMEOUT (20 * 1000) /* value in milliseconds - 20 seconds */
typedef struct ia64_fptr {
unsigned long fp;
unsigned long gp;
} ia64_fptr_t;
typedef union cmcv_reg_u {
u64 cmcv_regval;
struct {
u64 cmcr_vector : 8;
u64 cmcr_reserved1 : 4;
u64 cmcr_ignored1 : 1;
u64 cmcr_reserved2 : 3;
u64 cmcr_mask : 1;
u64 cmcr_ignored2 : 47;
} cmcv_reg_s;
} cmcv_reg_t;
#define cmcv_mask cmcv_reg_s.cmcr_mask
#define cmcv_vector cmcv_reg_s.cmcr_vector
enum {
IA64_MCA_RENDEZ_CHECKIN_NOTDONE = 0x0,
IA64_MCA_RENDEZ_CHECKIN_DONE = 0x1,
IA64_MCA_RENDEZ_CHECKIN_INIT = 0x2,
IA64_MCA_RENDEZ_CHECKIN_CONCURRENT_MCA = 0x3,
};
/* Information maintained by the MC infrastructure */
typedef struct ia64_mc_info_s {
u64 imi_mca_handler;
size_t imi_mca_handler_size;
u64 imi_monarch_init_handler;
size_t imi_monarch_init_handler_size;
u64 imi_slave_init_handler;
size_t imi_slave_init_handler_size;
u8 imi_rendez_checkin[NR_CPUS];
} ia64_mc_info_t;
/* Handover state from SAL to OS and vice versa, for both MCA and INIT events.
* Besides the handover state, it also contains some saved registers from the
* time of the event.
* Note: mca_asm.S depends on the precise layout of this structure.
*/
struct ia64_sal_os_state {
/* SAL to OS */
unsigned long os_gp; /* GP of the os registered with the SAL, physical */
unsigned long pal_proc; /* PAL_PROC entry point, physical */
unsigned long sal_proc; /* SAL_PROC entry point, physical */
unsigned long rv_rc; /* MCA - Rendezvous state, INIT - reason code */
unsigned long proc_state_param; /* from R18 */
unsigned long monarch; /* 1 for a monarch event, 0 for a slave */
/* common */
unsigned long sal_ra; /* Return address in SAL, physical */
unsigned long sal_gp; /* GP of the SAL - physical */
pal_min_state_area_t *pal_min_state; /* from R17. physical in asm, virtual in C */
/* Previous values of IA64_KR(CURRENT) and IA64_KR(CURRENT_STACK).
* Note: if the MCA/INIT recovery code wants to resume to a new context
* then it must change these values to reflect the new kernel stack.
*/
unsigned long prev_IA64_KR_CURRENT; /* previous value of IA64_KR(CURRENT) */
unsigned long prev_IA64_KR_CURRENT_STACK;
struct task_struct *prev_task; /* previous task, NULL if it is not useful */
/* Some interrupt registers are not saved in minstate, pt_regs or
* switch_stack. Because MCA/INIT can occur when interrupts are
* disabled, we need to save the additional interrupt registers over
* MCA/INIT and resume.
*/
unsigned long isr;
unsigned long ifa;
unsigned long itir;
unsigned long iipa;
unsigned long iim;
unsigned long iha;
/* OS to SAL */
unsigned long os_status; /* OS status to SAL, enum below */
unsigned long context; /* 0 if return to same context
1 if return to new context */
/* I-resources */
unsigned long iip;
unsigned long ipsr;
unsigned long ifs;
};
enum {
IA64_MCA_CORRECTED = 0x0, /* Error has been corrected by OS_MCA */
IA64_MCA_WARM_BOOT = -1, /* Warm boot of the system need from SAL */
IA64_MCA_COLD_BOOT = -2, /* Cold boot of the system need from SAL */
IA64_MCA_HALT = -3 /* System to be halted by SAL */
};
enum {
IA64_INIT_RESUME = 0x0, /* Resume after return from INIT */
IA64_INIT_WARM_BOOT = -1, /* Warm boot of the system need from SAL */
};
enum {
IA64_MCA_SAME_CONTEXT = 0x0, /* SAL to return to same context */
IA64_MCA_NEW_CONTEXT = -1 /* SAL to return to new context */
};
/* Per-CPU MCA state that is too big for normal per-CPU variables. */
struct ia64_mca_cpu {
u64 mca_stack[KERNEL_STACK_SIZE/8];
u64 init_stack[KERNEL_STACK_SIZE/8];
};
/* Array of physical addresses of each CPU's MCA area. */
extern unsigned long __per_cpu_mca[NR_CPUS];
extern int cpe_vector;
extern int ia64_cpe_irq;
extern void ia64_mca_init(void);
extern void ia64_mca_irq_init(void);
extern void ia64_mca_cpu_init(void *);
extern void ia64_os_mca_dispatch(void);
extern void ia64_os_mca_dispatch_end(void);
extern void ia64_mca_ucmc_handler(struct pt_regs *, struct ia64_sal_os_state *);
extern void ia64_init_handler(struct pt_regs *,
struct switch_stack *,
struct ia64_sal_os_state *);
extern void ia64_os_init_on_kdump(void);
extern void ia64_monarch_init_handler(void);
extern void ia64_slave_init_handler(void);
extern void ia64_mca_cmc_vector_setup(void);
extern int ia64_reg_MCA_extension(int (*fn)(void *, struct ia64_sal_os_state *));
extern void ia64_unreg_MCA_extension(void);
extern unsigned long ia64_get_rnat(unsigned long *);
extern void ia64_set_psr_mc(void);
extern void ia64_mca_printk(const char * fmt, ...)
__attribute__ ((format (printf, 1, 2)));
struct ia64_mca_notify_die {
struct ia64_sal_os_state *sos;
int *monarch_cpu;
int *data;
};
DECLARE_PER_CPU(u64, ia64_mca_pal_base);
#else /* __ASSEMBLY__ */
#define IA64_MCA_CORRECTED 0x0 /* Error has been corrected by OS_MCA */
#define IA64_MCA_WARM_BOOT -1 /* Warm boot of the system need from SAL */
#define IA64_MCA_COLD_BOOT -2 /* Cold boot of the system need from SAL */
#define IA64_MCA_HALT -3 /* System to be halted by SAL */
#define IA64_INIT_RESUME 0x0 /* Resume after return from INIT */
#define IA64_INIT_WARM_BOOT -1 /* Warm boot of the system need from SAL */
#define IA64_MCA_SAME_CONTEXT 0x0 /* SAL to return to same context */
#define IA64_MCA_NEW_CONTEXT -1 /* SAL to return to new context */
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_IA64_MCA_H */
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