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linux/arch/alpha/kernel/err_titan.c
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
/*
* linux/arch/alpha/kernel/err_titan.c
*
* Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
*
* Error handling code supporting TITAN systems
*/
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <asm/io.h>
#include <asm/core_titan.h>
#include <asm/hwrpb.h>
#include <asm/smp.h>
#include <asm/err_common.h>
#include <asm/err_ev6.h>
#include <asm/irq_regs.h>
#include "err_impl.h"
#include "proto.h"
static int
titan_parse_c_misc(u64 c_misc, int print)
{
#ifdef CONFIG_VERBOSE_MCHECK
char *src;
int nxs = 0;
#endif
int status = MCHK_DISPOSITION_REPORT;
#define TITAN__CCHIP_MISC__NXM (1UL << 28)
#define TITAN__CCHIP_MISC__NXS__S (29)
#define TITAN__CCHIP_MISC__NXS__M (0x7)
if (!(c_misc & TITAN__CCHIP_MISC__NXM))
return MCHK_DISPOSITION_UNKNOWN_ERROR;
#ifdef CONFIG_VERBOSE_MCHECK
if (!print)
return status;
nxs = EXTRACT(c_misc, TITAN__CCHIP_MISC__NXS);
switch(nxs) {
case 0: /* CPU 0 */
case 1: /* CPU 1 */
case 2: /* CPU 2 */
case 3: /* CPU 3 */
src = "CPU";
/* num is already the CPU number */
break;
case 4: /* Pchip 0 */
case 5: /* Pchip 1 */
src = "Pchip";
nxs -= 4;
break;
default:/* reserved */
src = "Unknown, NXS =";
/* leave num untouched */
break;
}
printk("%s Non-existent memory access from: %s %d\n",
err_print_prefix, src, nxs);
#endif /* CONFIG_VERBOSE_MCHECK */
return status;
}
static int
titan_parse_p_serror(int which, u64 serror, int print)
{
int status = MCHK_DISPOSITION_REPORT;
#ifdef CONFIG_VERBOSE_MCHECK
static const char * const serror_src[] = {
"GPCI", "APCI", "AGP HP", "AGP LP"
};
static const char * const serror_cmd[] = {
"DMA Read", "DMA RMW", "SGTE Read", "Reserved"
};
#endif /* CONFIG_VERBOSE_MCHECK */
#define TITAN__PCHIP_SERROR__LOST_UECC (1UL << 0)
#define TITAN__PCHIP_SERROR__UECC (1UL << 1)
#define TITAN__PCHIP_SERROR__CRE (1UL << 2)
#define TITAN__PCHIP_SERROR__NXIO (1UL << 3)
#define TITAN__PCHIP_SERROR__LOST_CRE (1UL << 4)
#define TITAN__PCHIP_SERROR__ECCMASK (TITAN__PCHIP_SERROR__UECC | \
TITAN__PCHIP_SERROR__CRE)
#define TITAN__PCHIP_SERROR__ERRMASK (TITAN__PCHIP_SERROR__LOST_UECC | \
TITAN__PCHIP_SERROR__UECC | \
TITAN__PCHIP_SERROR__CRE | \
TITAN__PCHIP_SERROR__NXIO | \
TITAN__PCHIP_SERROR__LOST_CRE)
#define TITAN__PCHIP_SERROR__SRC__S (52)
#define TITAN__PCHIP_SERROR__SRC__M (0x3)
#define TITAN__PCHIP_SERROR__CMD__S (54)
#define TITAN__PCHIP_SERROR__CMD__M (0x3)
#define TITAN__PCHIP_SERROR__SYN__S (56)
#define TITAN__PCHIP_SERROR__SYN__M (0xff)
#define TITAN__PCHIP_SERROR__ADDR__S (15)
#define TITAN__PCHIP_SERROR__ADDR__M (0xffffffffUL)
if (!(serror & TITAN__PCHIP_SERROR__ERRMASK))
return MCHK_DISPOSITION_UNKNOWN_ERROR;
#ifdef CONFIG_VERBOSE_MCHECK
if (!print)
return status;
printk("%s PChip %d SERROR: %016llx\n",
err_print_prefix, which, serror);
if (serror & TITAN__PCHIP_SERROR__ECCMASK) {
printk("%s %sorrectable ECC Error:\n"
" Source: %-6s Command: %-8s Syndrome: 0x%08x\n"
" Address: 0x%llx\n",
err_print_prefix,
(serror & TITAN__PCHIP_SERROR__UECC) ? "Unc" : "C",
serror_src[EXTRACT(serror, TITAN__PCHIP_SERROR__SRC)],
serror_cmd[EXTRACT(serror, TITAN__PCHIP_SERROR__CMD)],
(unsigned)EXTRACT(serror, TITAN__PCHIP_SERROR__SYN),
EXTRACT(serror, TITAN__PCHIP_SERROR__ADDR));
}
if (serror & TITAN__PCHIP_SERROR__NXIO)
printk("%s Non Existent I/O Error\n", err_print_prefix);
if (serror & TITAN__PCHIP_SERROR__LOST_UECC)
printk("%s Lost Uncorrectable ECC Error\n",
err_print_prefix);
if (serror & TITAN__PCHIP_SERROR__LOST_CRE)
printk("%s Lost Correctable ECC Error\n", err_print_prefix);
#endif /* CONFIG_VERBOSE_MCHECK */
return status;
}
static int
titan_parse_p_perror(int which, int port, u64 perror, int print)
{
int cmd;
unsigned long addr;
int status = MCHK_DISPOSITION_REPORT;
#ifdef CONFIG_VERBOSE_MCHECK
static const char * const perror_cmd[] = {
"Interrupt Acknowledge", "Special Cycle",
"I/O Read", "I/O Write",
"Reserved", "Reserved",
"Memory Read", "Memory Write",
"Reserved", "Reserved",
"Configuration Read", "Configuration Write",
"Memory Read Multiple", "Dual Address Cycle",
"Memory Read Line", "Memory Write and Invalidate"
};
#endif /* CONFIG_VERBOSE_MCHECK */
#define TITAN__PCHIP_PERROR__LOST (1UL << 0)
#define TITAN__PCHIP_PERROR__SERR (1UL << 1)
#define TITAN__PCHIP_PERROR__PERR (1UL << 2)
#define TITAN__PCHIP_PERROR__DCRTO (1UL << 3)
#define TITAN__PCHIP_PERROR__SGE (1UL << 4)
#define TITAN__PCHIP_PERROR__APE (1UL << 5)
#define TITAN__PCHIP_PERROR__TA (1UL << 6)
#define TITAN__PCHIP_PERROR__DPE (1UL << 7)
#define TITAN__PCHIP_PERROR__NDS (1UL << 8)
#define TITAN__PCHIP_PERROR__IPTPR (1UL << 9)
#define TITAN__PCHIP_PERROR__IPTPW (1UL << 10)
#define TITAN__PCHIP_PERROR__ERRMASK (TITAN__PCHIP_PERROR__LOST | \
TITAN__PCHIP_PERROR__SERR | \
TITAN__PCHIP_PERROR__PERR | \
TITAN__PCHIP_PERROR__DCRTO | \
TITAN__PCHIP_PERROR__SGE | \
TITAN__PCHIP_PERROR__APE | \
TITAN__PCHIP_PERROR__TA | \
TITAN__PCHIP_PERROR__DPE | \
TITAN__PCHIP_PERROR__NDS | \
TITAN__PCHIP_PERROR__IPTPR | \
TITAN__PCHIP_PERROR__IPTPW)
#define TITAN__PCHIP_PERROR__DAC (1UL << 47)
#define TITAN__PCHIP_PERROR__MWIN (1UL << 48)
#define TITAN__PCHIP_PERROR__CMD__S (52)
#define TITAN__PCHIP_PERROR__CMD__M (0x0f)
#define TITAN__PCHIP_PERROR__ADDR__S (14)
#define TITAN__PCHIP_PERROR__ADDR__M (0x1fffffffful)
if (!(perror & TITAN__PCHIP_PERROR__ERRMASK))
return MCHK_DISPOSITION_UNKNOWN_ERROR;
cmd = EXTRACT(perror, TITAN__PCHIP_PERROR__CMD);
addr = EXTRACT(perror, TITAN__PCHIP_PERROR__ADDR) << 2;
/*
* Initializing the BIOS on a video card on a bus without
* a south bridge (subtractive decode agent) can result in
* master aborts as the BIOS probes the capabilities of the
* card. XFree86 does such initialization. If the error
* is a master abort (No DevSel as PCI Master) and the command
* is an I/O read or write below the address where we start
* assigning PCI I/O spaces (SRM uses 0x1000), then mark the
* error as dismissable so starting XFree86 doesn't result
* in a series of uncorrectable errors being reported. Also
* dismiss master aborts to VGA frame buffer space
* (0xA0000 - 0xC0000) and legacy BIOS space (0xC0000 - 0x100000)
* for the same reason.
*
* Also mark the error dismissible if it looks like the right
* error but only the Lost bit is set. Since the BIOS initialization
* can cause multiple master aborts and the error interrupt can
* be handled on a different CPU than the BIOS code is run on,
* it is possible for a second master abort to occur between the
* time the PALcode reads PERROR and the time it writes PERROR
* to acknowledge the error. If this timing happens, a second
* error will be signalled after the first, and if no additional
* errors occur, will look like a Lost error with no additional
* errors on the same transaction as the previous error.
*/
if (((perror & TITAN__PCHIP_PERROR__NDS) ||
((perror & TITAN__PCHIP_PERROR__ERRMASK) ==
TITAN__PCHIP_PERROR__LOST)) &&
((((cmd & 0xE) == 2) && (addr < 0x1000)) ||
(((cmd & 0xE) == 6) && (addr >= 0xA0000) && (addr < 0x100000)))) {
status = MCHK_DISPOSITION_DISMISS;
}
#ifdef CONFIG_VERBOSE_MCHECK
if (!print)
return status;
printk("%s PChip %d %cPERROR: %016llx\n",
err_print_prefix, which,
port ? 'A' : 'G', perror);
if (perror & TITAN__PCHIP_PERROR__IPTPW)
printk("%s Invalid Peer-to-Peer Write\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__IPTPR)
printk("%s Invalid Peer-to-Peer Read\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__NDS)
printk("%s No DEVSEL as PCI Master [Master Abort]\n",
err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__DPE)
printk("%s Data Parity Error\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__TA)
printk("%s Target Abort\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__APE)
printk("%s Address Parity Error\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__SGE)
printk("%s Scatter-Gather Error, Invalid PTE\n",
err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__DCRTO)
printk("%s Delayed-Completion Retry Timeout\n",
err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__PERR)
printk("%s PERR Asserted\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__SERR)
printk("%s SERR Asserted\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__LOST)
printk("%s Lost Error\n", err_print_prefix);
printk("%s Command: 0x%x - %s\n"
" Address: 0x%lx\n",
err_print_prefix,
cmd, perror_cmd[cmd],
addr);
if (perror & TITAN__PCHIP_PERROR__DAC)
printk("%s Dual Address Cycle\n", err_print_prefix);
if (perror & TITAN__PCHIP_PERROR__MWIN)
printk("%s Hit in Monster Window\n", err_print_prefix);
#endif /* CONFIG_VERBOSE_MCHECK */
return status;
}
static int
titan_parse_p_agperror(int which, u64 agperror, int print)
{
int status = MCHK_DISPOSITION_REPORT;
#ifdef CONFIG_VERBOSE_MCHECK
int cmd, len;
unsigned long addr;
static const char * const agperror_cmd[] = {
"Read (low-priority)", "Read (high-priority)",
"Write (low-priority)", "Write (high-priority)",
"Reserved", "Reserved",
"Flush", "Fence"
};
#endif /* CONFIG_VERBOSE_MCHECK */
#define TITAN__PCHIP_AGPERROR__LOST (1UL << 0)
#define TITAN__PCHIP_AGPERROR__LPQFULL (1UL << 1)
#define TITAN__PCHIP_AGPERROR__HPQFULL (1UL << 2)
#define TITAN__PCHIP_AGPERROR__RESCMD (1UL << 3)
#define TITAN__PCHIP_AGPERROR__IPTE (1UL << 4)
#define TITAN__PCHIP_AGPERROR__PTP (1UL << 5)
#define TITAN__PCHIP_AGPERROR__NOWINDOW (1UL << 6)
#define TITAN__PCHIP_AGPERROR__ERRMASK (TITAN__PCHIP_AGPERROR__LOST | \
TITAN__PCHIP_AGPERROR__LPQFULL | \
TITAN__PCHIP_AGPERROR__HPQFULL | \
TITAN__PCHIP_AGPERROR__RESCMD | \
TITAN__PCHIP_AGPERROR__IPTE | \
TITAN__PCHIP_AGPERROR__PTP | \
TITAN__PCHIP_AGPERROR__NOWINDOW)
#define TITAN__PCHIP_AGPERROR__DAC (1UL << 48)
#define TITAN__PCHIP_AGPERROR__MWIN (1UL << 49)
#define TITAN__PCHIP_AGPERROR__FENCE (1UL << 59)
#define TITAN__PCHIP_AGPERROR__CMD__S (50)
#define TITAN__PCHIP_AGPERROR__CMD__M (0x07)
#define TITAN__PCHIP_AGPERROR__ADDR__S (15)
#define TITAN__PCHIP_AGPERROR__ADDR__M (0xffffffffUL)
#define TITAN__PCHIP_AGPERROR__LEN__S (53)
#define TITAN__PCHIP_AGPERROR__LEN__M (0x3f)
if (!(agperror & TITAN__PCHIP_AGPERROR__ERRMASK))
return MCHK_DISPOSITION_UNKNOWN_ERROR;
#ifdef CONFIG_VERBOSE_MCHECK
if (!print)
return status;
cmd = EXTRACT(agperror, TITAN__PCHIP_AGPERROR__CMD);
addr = EXTRACT(agperror, TITAN__PCHIP_AGPERROR__ADDR) << 3;
len = EXTRACT(agperror, TITAN__PCHIP_AGPERROR__LEN);
printk("%s PChip %d AGPERROR: %016llx\n", err_print_prefix,
which, agperror);
if (agperror & TITAN__PCHIP_AGPERROR__NOWINDOW)
printk("%s No Window\n", err_print_prefix);
if (agperror & TITAN__PCHIP_AGPERROR__PTP)
printk("%s Peer-to-Peer set\n", err_print_prefix);
if (agperror & TITAN__PCHIP_AGPERROR__IPTE)
printk("%s Invalid PTE\n", err_print_prefix);
if (agperror & TITAN__PCHIP_AGPERROR__RESCMD)
printk("%s Reserved Command\n", err_print_prefix);
if (agperror & TITAN__PCHIP_AGPERROR__HPQFULL)
printk("%s HP Transaction Received while Queue Full\n",
err_print_prefix);
if (agperror & TITAN__PCHIP_AGPERROR__LPQFULL)
printk("%s LP Transaction Received while Queue Full\n",
err_print_prefix);
if (agperror & TITAN__PCHIP_AGPERROR__LOST)
printk("%s Lost Error\n", err_print_prefix);
printk("%s Command: 0x%x - %s, %d Quadwords%s\n"
" Address: 0x%lx\n",
err_print_prefix, cmd, agperror_cmd[cmd], len,
(agperror & TITAN__PCHIP_AGPERROR__FENCE) ? ", FENCE" : "",
addr);
if (agperror & TITAN__PCHIP_AGPERROR__DAC)
printk("%s Dual Address Cycle\n", err_print_prefix);
if (agperror & TITAN__PCHIP_AGPERROR__MWIN)
printk("%s Hit in Monster Window\n", err_print_prefix);
#endif /* CONFIG_VERBOSE_MCHECK */
return status;
}
static int
titan_parse_p_chip(int which, u64 serror, u64 gperror,
u64 aperror, u64 agperror, int print)
{
int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
status |= titan_parse_p_serror(which, serror, print);
status |= titan_parse_p_perror(which, 0, gperror, print);
status |= titan_parse_p_perror(which, 1, aperror, print);
status |= titan_parse_p_agperror(which, agperror, print);
return status;
}
int
titan_process_logout_frame(struct el_common *mchk_header, int print)
{
struct el_TITAN_sysdata_mcheck *tmchk =
(struct el_TITAN_sysdata_mcheck *)
((unsigned long)mchk_header + mchk_header->sys_offset);
int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
status |= titan_parse_c_misc(tmchk->c_misc, print);
status |= titan_parse_p_chip(0, tmchk->p0_serror, tmchk->p0_gperror,
tmchk->p0_aperror, tmchk->p0_agperror,
print);
status |= titan_parse_p_chip(1, tmchk->p1_serror, tmchk->p1_gperror,
tmchk->p1_aperror, tmchk->p1_agperror,
print);
return status;
}
void
titan_machine_check(unsigned long vector, unsigned long la_ptr)
{
struct el_common *mchk_header = (struct el_common *)la_ptr;
struct el_TITAN_sysdata_mcheck *tmchk =
(struct el_TITAN_sysdata_mcheck *)
((unsigned long)mchk_header + mchk_header->sys_offset);
u64 irqmask;
/*
* Mask of Titan interrupt sources which are reported as machine checks
*
* 63 - CChip Error
* 62 - PChip 0 H_Error
* 61 - PChip 1 H_Error
* 60 - PChip 0 C_Error
* 59 - PChip 1 C_Error
*/
#define TITAN_MCHECK_INTERRUPT_MASK 0xF800000000000000UL
/*
* Sync the processor
*/
mb();
draina();
/*
* Only handle system errors here
*/
if ((vector != SCB_Q_SYSMCHK) && (vector != SCB_Q_SYSERR)) {
ev6_machine_check(vector, la_ptr);
return;
}
/*
* It's a system error, handle it here
*
* The PALcode has already cleared the error, so just parse it
*/
/*
* Parse the logout frame without printing first. If the only error(s)
* found are classified as "dismissable", then just dismiss them and
* don't print any message
*/
if (titan_process_logout_frame(mchk_header, 0) !=
MCHK_DISPOSITION_DISMISS) {
char *saved_err_prefix = err_print_prefix;
err_print_prefix = KERN_CRIT;
/*
* Either a nondismissable error was detected or no
* recognized error was detected in the logout frame
* -- report the error in either case
*/
printk("%s"
"*System %s Error (Vector 0x%x) reported on CPU %d:\n",
err_print_prefix,
(vector == SCB_Q_SYSERR)?"Correctable":"Uncorrectable",
(unsigned int)vector, (int)smp_processor_id());
#ifdef CONFIG_VERBOSE_MCHECK
titan_process_logout_frame(mchk_header, alpha_verbose_mcheck);
if (alpha_verbose_mcheck)
dik_show_regs(get_irq_regs(), NULL);
#endif /* CONFIG_VERBOSE_MCHECK */
err_print_prefix = saved_err_prefix;
/*
* Convert any pending interrupts which report as system
* machine checks to interrupts
*/
irqmask = tmchk->c_dirx & TITAN_MCHECK_INTERRUPT_MASK;
titan_dispatch_irqs(irqmask);
}
/*
* Release the logout frame
*/
wrmces(0x7);
mb();
}
/*
* Subpacket Annotations
*/
static char *el_titan_pchip0_extended_annotation[] = {
"Subpacket Header", "P0_SCTL", "P0_SERREN",
"P0_APCTL", "P0_APERREN", "P0_AGPERREN",
"P0_ASPRST", "P0_AWSBA0", "P0_AWSBA1",
"P0_AWSBA2", "P0_AWSBA3", "P0_AWSM0",
"P0_AWSM1", "P0_AWSM2", "P0_AWSM3",
"P0_ATBA0", "P0_ATBA1", "P0_ATBA2",
"P0_ATBA3", "P0_GPCTL", "P0_GPERREN",
"P0_GSPRST", "P0_GWSBA0", "P0_GWSBA1",
"P0_GWSBA2", "P0_GWSBA3", "P0_GWSM0",
"P0_GWSM1", "P0_GWSM2", "P0_GWSM3",
"P0_GTBA0", "P0_GTBA1", "P0_GTBA2",
"P0_GTBA3", NULL
};
static char *el_titan_pchip1_extended_annotation[] = {
"Subpacket Header", "P1_SCTL", "P1_SERREN",
"P1_APCTL", "P1_APERREN", "P1_AGPERREN",
"P1_ASPRST", "P1_AWSBA0", "P1_AWSBA1",
"P1_AWSBA2", "P1_AWSBA3", "P1_AWSM0",
"P1_AWSM1", "P1_AWSM2", "P1_AWSM3",
"P1_ATBA0", "P1_ATBA1", "P1_ATBA2",
"P1_ATBA3", "P1_GPCTL", "P1_GPERREN",
"P1_GSPRST", "P1_GWSBA0", "P1_GWSBA1",
"P1_GWSBA2", "P1_GWSBA3", "P1_GWSM0",
"P1_GWSM1", "P1_GWSM2", "P1_GWSM3",
"P1_GTBA0", "P1_GTBA1", "P1_GTBA2",
"P1_GTBA3", NULL
};
static char *el_titan_memory_extended_annotation[] = {
"Subpacket Header", "AAR0", "AAR1",
"AAR2", "AAR3", "P0_SCTL",
"P0_GPCTL", "P0_APCTL", "P1_SCTL",
"P1_GPCTL", "P1_SCTL", NULL
};
static struct el_subpacket_annotation el_titan_annotations[] = {
SUBPACKET_ANNOTATION(EL_CLASS__REGATTA_FAMILY,
EL_TYPE__REGATTA__TITAN_PCHIP0_EXTENDED,
1,
"Titan PChip 0 Extended Frame",
el_titan_pchip0_extended_annotation),
SUBPACKET_ANNOTATION(EL_CLASS__REGATTA_FAMILY,
EL_TYPE__REGATTA__TITAN_PCHIP1_EXTENDED,
1,
"Titan PChip 1 Extended Frame",
el_titan_pchip1_extended_annotation),
SUBPACKET_ANNOTATION(EL_CLASS__REGATTA_FAMILY,
EL_TYPE__REGATTA__TITAN_MEMORY_EXTENDED,
1,
"Titan Memory Extended Frame",
el_titan_memory_extended_annotation),
SUBPACKET_ANNOTATION(EL_CLASS__REGATTA_FAMILY,
EL_TYPE__TERMINATION__TERMINATION,
1,
"Termination Subpacket",
NULL)
};
static struct el_subpacket *
el_process_regatta_subpacket(struct el_subpacket *header)
{
if (header->class != EL_CLASS__REGATTA_FAMILY) {
printk("%s ** Unexpected header CLASS %d TYPE %d, aborting\n",
err_print_prefix,
header->class, header->type);
return NULL;
}
switch(header->type) {
case EL_TYPE__REGATTA__PROCESSOR_ERROR_FRAME:
case EL_TYPE__REGATTA__SYSTEM_ERROR_FRAME:
case EL_TYPE__REGATTA__ENVIRONMENTAL_FRAME:
case EL_TYPE__REGATTA__PROCESSOR_DBL_ERROR_HALT:
case EL_TYPE__REGATTA__SYSTEM_DBL_ERROR_HALT:
printk("%s ** Occurred on CPU %d:\n",
err_print_prefix,
(int)header->by_type.regatta_frame.cpuid);
privateer_process_logout_frame((struct el_common *)
header->by_type.regatta_frame.data_start, 1);
break;
default:
printk("%s ** REGATTA TYPE %d SUBPACKET\n",
err_print_prefix, header->type);
el_annotate_subpacket(header);
break;
}
return (struct el_subpacket *)((unsigned long)header + header->length);
}
static struct el_subpacket_handler titan_subpacket_handler =
SUBPACKET_HANDLER_INIT(EL_CLASS__REGATTA_FAMILY,
el_process_regatta_subpacket);
void __init
titan_register_error_handlers(void)
{
size_t i;
for (i = 0; i < ARRAY_SIZE (el_titan_annotations); i++)
cdl_register_subpacket_annotation(&el_titan_annotations[i]);
cdl_register_subpacket_handler(&titan_subpacket_handler);
ev6_register_error_handlers();
}
/*
* Privateer
*/
static int
privateer_process_680_frame(struct el_common *mchk_header, int print)
{
int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
#ifdef CONFIG_VERBOSE_MCHECK
struct el_PRIVATEER_envdata_mcheck *emchk =
(struct el_PRIVATEER_envdata_mcheck *)
((unsigned long)mchk_header + mchk_header->sys_offset);
/* TODO - categorize errors, for now, no error */
if (!print)
return status;
/* TODO - decode instead of just dumping... */
printk("%s Summary Flags: %016llx\n"
" CChip DIRx: %016llx\n"
" System Management IR: %016llx\n"
" CPU IR: %016llx\n"
" Power Supply IR: %016llx\n"
" LM78 Fault Status: %016llx\n"
" System Doors: %016llx\n"
" Temperature Warning: %016llx\n"
" Fan Control: %016llx\n"
" Fatal Power Down Code: %016llx\n",
err_print_prefix,
emchk->summary,
emchk->c_dirx,
emchk->smir,
emchk->cpuir,
emchk->psir,
emchk->fault,
emchk->sys_doors,
emchk->temp_warn,
emchk->fan_ctrl,
emchk->code);
#endif /* CONFIG_VERBOSE_MCHECK */
return status;
}
int
privateer_process_logout_frame(struct el_common *mchk_header, int print)
{
struct el_common_EV6_mcheck *ev6mchk =
(struct el_common_EV6_mcheck *)mchk_header;
int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
/*
* Machine check codes
*/
#define PRIVATEER_MCHK__CORR_ECC 0x86 /* 630 */
#define PRIVATEER_MCHK__DC_TAG_PERR 0x9E /* 630 */
#define PRIVATEER_MCHK__PAL_BUGCHECK 0x8E /* 670 */
#define PRIVATEER_MCHK__OS_BUGCHECK 0x90 /* 670 */
#define PRIVATEER_MCHK__PROC_HRD_ERR 0x98 /* 670 */
#define PRIVATEER_MCHK__ISTREAM_CMOV_PRX 0xA0 /* 670 */
#define PRIVATEER_MCHK__ISTREAM_CMOV_FLT 0xA2 /* 670 */
#define PRIVATEER_MCHK__SYS_HRD_ERR 0x202 /* 660 */
#define PRIVATEER_MCHK__SYS_CORR_ERR 0x204 /* 620 */
#define PRIVATEER_MCHK__SYS_ENVIRON 0x206 /* 680 */
switch(ev6mchk->MCHK_Code) {
/*
* Vector 630 - Processor, Correctable
*/
case PRIVATEER_MCHK__CORR_ECC:
case PRIVATEER_MCHK__DC_TAG_PERR:
/*
* Fall through to vector 670 for processing...
*/
/*
* Vector 670 - Processor, Uncorrectable
*/
case PRIVATEER_MCHK__PAL_BUGCHECK:
case PRIVATEER_MCHK__OS_BUGCHECK:
case PRIVATEER_MCHK__PROC_HRD_ERR:
case PRIVATEER_MCHK__ISTREAM_CMOV_PRX:
case PRIVATEER_MCHK__ISTREAM_CMOV_FLT:
status |= ev6_process_logout_frame(mchk_header, print);
break;
/*
* Vector 620 - System, Correctable
*/
case PRIVATEER_MCHK__SYS_CORR_ERR:
/*
* Fall through to vector 660 for processing...
*/
/*
* Vector 660 - System, Uncorrectable
*/
case PRIVATEER_MCHK__SYS_HRD_ERR:
status |= titan_process_logout_frame(mchk_header, print);
break;
/*
* Vector 680 - System, Environmental
*/
case PRIVATEER_MCHK__SYS_ENVIRON: /* System, Environmental */
status |= privateer_process_680_frame(mchk_header, print);
break;
/*
* Unknown
*/
default:
status |= MCHK_DISPOSITION_REPORT;
if (print) {
printk("%s** Unknown Error, frame follows\n",
err_print_prefix);
mchk_dump_logout_frame(mchk_header);
}
}
return status;
}
void
privateer_machine_check(unsigned long vector, unsigned long la_ptr)
{
struct el_common *mchk_header = (struct el_common *)la_ptr;
struct el_TITAN_sysdata_mcheck *tmchk =
(struct el_TITAN_sysdata_mcheck *)
(la_ptr + mchk_header->sys_offset);
u64 irqmask;
char *saved_err_prefix = err_print_prefix;
#define PRIVATEER_680_INTERRUPT_MASK (0xE00UL)
#define PRIVATEER_HOTPLUG_INTERRUPT_MASK (0xE00UL)
/*
* Sync the processor.
*/
mb();
draina();
/*
* Only handle system events here.
*/
if (vector != SCB_Q_SYSEVENT)
return titan_machine_check(vector, la_ptr);
/*
* Report the event - System Events should be reported even if no
* error is indicated since the event could indicate the return
* to normal status.
*/
err_print_prefix = KERN_CRIT;
printk("%s*System Event (Vector 0x%x) reported on CPU %d:\n",
err_print_prefix,
(unsigned int)vector, (int)smp_processor_id());
privateer_process_680_frame(mchk_header, 1);
err_print_prefix = saved_err_prefix;
/*
* Convert any pending interrupts which report as 680 machine
* checks to interrupts.
*/
irqmask = tmchk->c_dirx & PRIVATEER_680_INTERRUPT_MASK;
/*
* Dispatch the interrupt(s).
*/
titan_dispatch_irqs(irqmask);
/*
* Release the logout frame.
*/
wrmces(0x7);
mb();
}
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