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 21:07:57 +07:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2006-02-08 17:53:50 +07:00
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/* sun4v_ivec.S: Sun4v interrupt vector handling.
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*
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* Copyright (C) 2006 <davem@davemloft.net>
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*/
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#include <asm/cpudata.h>
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#include <asm/intr_queue.h>
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2006-06-20 15:20:00 +07:00
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#include <asm/pil.h>
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2006-02-08 17:53:50 +07:00
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.text
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.align 32
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sun4v_cpu_mondo:
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/* Head offset in %g2, tail offset in %g4.
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* If they are the same, no work.
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*/
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mov INTRQ_CPU_MONDO_HEAD, %g2
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ldxa [%g2] ASI_QUEUE, %g2
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mov INTRQ_CPU_MONDO_TAIL, %g4
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ldxa [%g4] ASI_QUEUE, %g4
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cmp %g2, %g4
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be,pn %xcc, sun4v_cpu_mondo_queue_empty
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nop
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2007-05-26 05:49:59 +07:00
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/* Get &trap_block[smp_processor_id()] into %g4. */
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ldxa [%g0] ASI_SCRATCHPAD, %g4
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sub %g4, TRAP_PER_CPU_FAULT_INFO, %g4
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2006-02-08 17:53:50 +07:00
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sparc64: Measure receiver forward progress to avoid send mondo timeout
A large sun4v SPARC system may have moments of intensive xcall activities,
usually caused by unmapping many pages on many CPUs concurrently. This can
flood receivers with CPU mondo interrupts for an extended period, causing
some unlucky senders to hit send-mondo timeout. This problem gets worse
as cpu count increases because sometimes mappings must be invalidated on
all CPUs, and sometimes all CPUs may gang up on a single CPU.
But a busy system is not a broken system. In the above scenario, as long
as the receiver is making forward progress processing mondo interrupts,
the sender should continue to retry.
This patch implements the receiver's forward progress meter by introducing
a per cpu counter 'cpu_mondo_counter[cpu]' where 'cpu' is in the range
of 0..NR_CPUS. The receiver increments its counter as soon as it receives
a mondo and the sender tracks the receiver's counter. If the receiver has
stopped making forward progress when the retry limit is reached, the sender
declares send-mondo-timeout and panic; otherwise, the receiver is allowed
to keep making forward progress.
In addition, it's been observed that PCIe hotplug events generate Correctable
Errors that are handled by hypervisor and then OS. Hypervisor 'borrows'
a guest cpu strand briefly to provide the service. If the cpu strand is
simultaneously the only cpu targeted by a mondo, it may not be available
for the mondo in 20msec, causing SUN4V mondo timeout. It appears that 1 second
is the agreed wait time between hypervisor and guest OS, this patch makes
the adjustment.
Orabug: 25476541
Orabug: 26417466
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Reviewed-by: Rob Gardner <rob.gardner@oracle.com>
Reviewed-by: Thomas Tai <thomas.tai@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-12 01:00:54 +07:00
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/* Get smp_processor_id() into %g3 */
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sethi %hi(trap_block), %g5
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or %g5, %lo(trap_block), %g5
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sub %g4, %g5, %g3
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srlx %g3, TRAP_BLOCK_SZ_SHIFT, %g3
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/* Increment cpu_mondo_counter[smp_processor_id()] */
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sethi %hi(cpu_mondo_counter), %g5
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or %g5, %lo(cpu_mondo_counter), %g5
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sllx %g3, 3, %g3
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add %g5, %g3, %g5
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ldx [%g5], %g3
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add %g3, 1, %g3
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stx %g3, [%g5]
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2006-02-08 17:53:50 +07:00
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/* Get CPU mondo queue base phys address into %g7. */
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2007-05-26 05:49:59 +07:00
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ldx [%g4 + TRAP_PER_CPU_CPU_MONDO_PA], %g7
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2006-02-08 17:53:50 +07:00
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/* Now get the cross-call arguments and handler PC, same
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* layout as sun4u:
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*
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* 1st 64-bit word: low half is 32-bit PC, put into %g3 and jmpl to it
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* high half is context arg to MMU flushes, into %g5
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* 2nd 64-bit word: 64-bit arg, load into %g1
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* 3rd 64-bit word: 64-bit arg, load into %g7
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*/
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ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g3
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add %g2, 0x8, %g2
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srlx %g3, 32, %g5
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ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g1
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add %g2, 0x8, %g2
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srl %g3, 0, %g3
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ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g7
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add %g2, 0x40 - 0x8 - 0x8, %g2
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/* Update queue head pointer. */
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2007-05-26 05:49:59 +07:00
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lduw [%g4 + TRAP_PER_CPU_CPU_MONDO_QMASK], %g4
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2006-02-08 17:53:50 +07:00
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and %g2, %g4, %g2
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mov INTRQ_CPU_MONDO_HEAD, %g4
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stxa %g2, [%g4] ASI_QUEUE
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membar #Sync
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jmpl %g3, %g0
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nop
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sun4v_cpu_mondo_queue_empty:
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retry
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sun4v_dev_mondo:
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/* Head offset in %g2, tail offset in %g4. */
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mov INTRQ_DEVICE_MONDO_HEAD, %g2
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ldxa [%g2] ASI_QUEUE, %g2
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mov INTRQ_DEVICE_MONDO_TAIL, %g4
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ldxa [%g4] ASI_QUEUE, %g4
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cmp %g2, %g4
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be,pn %xcc, sun4v_dev_mondo_queue_empty
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nop
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2007-05-26 05:49:59 +07:00
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/* Get &trap_block[smp_processor_id()] into %g4. */
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ldxa [%g0] ASI_SCRATCHPAD, %g4
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sub %g4, TRAP_PER_CPU_FAULT_INFO, %g4
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2006-02-08 17:53:50 +07:00
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/* Get DEV mondo queue base phys address into %g5. */
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2007-05-26 05:49:59 +07:00
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ldx [%g4 + TRAP_PER_CPU_DEV_MONDO_PA], %g5
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2006-02-08 17:53:50 +07:00
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/* Load IVEC into %g3. */
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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add %g2, 0x40, %g2
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/* XXX There can be a full 64-byte block of data here.
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* XXX This is how we can get at MSI vector data.
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* XXX Current we do not capture this, but when we do we'll
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* XXX need to add a 64-byte storage area in the struct ino_bucket
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* XXX or the struct irq_desc.
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*/
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/* Update queue head pointer, this frees up some registers. */
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2007-05-26 05:49:59 +07:00
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lduw [%g4 + TRAP_PER_CPU_DEV_MONDO_QMASK], %g4
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2006-02-08 17:53:50 +07:00
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and %g2, %g4, %g2
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mov INTRQ_DEVICE_MONDO_HEAD, %g4
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stxa %g2, [%g4] ASI_QUEUE
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membar #Sync
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2007-10-14 11:42:46 +07:00
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TRAP_LOAD_IRQ_WORK_PA(%g1, %g4)
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2006-02-08 17:53:50 +07:00
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2007-10-14 11:51:37 +07:00
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/* For VIRQs, cookie is encoded as ~bucket_phys_addr */
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brlz,pt %g3, 1f
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xnor %g3, %g0, %g4
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2007-10-14 11:42:46 +07:00
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/* Get __pa(&ivector_table[IVEC]) into %g4. */
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sethi %hi(ivector_table_pa), %g4
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ldx [%g4 + %lo(ivector_table_pa)], %g4
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2007-10-12 16:59:40 +07:00
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sllx %g3, 4, %g3
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2006-02-08 17:53:50 +07:00
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add %g4, %g3, %g4
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2007-10-14 11:51:37 +07:00
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1: ldx [%g1], %g2
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2007-10-14 11:42:46 +07:00
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stxa %g2, [%g4] ASI_PHYS_USE_EC
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stx %g4, [%g1]
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2006-02-08 17:53:50 +07:00
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/* Signal the interrupt by setting (1 << pil) in %softint. */
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2006-06-20 15:20:00 +07:00
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wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint
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2006-02-08 17:53:50 +07:00
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sun4v_dev_mondo_queue_empty:
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retry
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sun4v_res_mondo:
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/* Head offset in %g2, tail offset in %g4. */
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mov INTRQ_RESUM_MONDO_HEAD, %g2
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ldxa [%g2] ASI_QUEUE, %g2
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mov INTRQ_RESUM_MONDO_TAIL, %g4
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ldxa [%g4] ASI_QUEUE, %g4
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cmp %g2, %g4
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be,pn %xcc, sun4v_res_mondo_queue_empty
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nop
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/* Get &trap_block[smp_processor_id()] into %g3. */
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2006-02-11 06:39:51 +07:00
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ldxa [%g0] ASI_SCRATCHPAD, %g3
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sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
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2006-02-08 17:53:50 +07:00
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/* Get RES mondo queue base phys address into %g5. */
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ldx [%g3 + TRAP_PER_CPU_RESUM_MONDO_PA], %g5
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/* Get RES kernel buffer base phys address into %g7. */
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ldx [%g3 + TRAP_PER_CPU_RESUM_KBUF_PA], %g7
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/* If the first word is non-zero, queue is full. */
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ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g1
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brnz,pn %g1, sun4v_res_mondo_queue_full
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nop
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2007-05-26 05:49:59 +07:00
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lduw [%g3 + TRAP_PER_CPU_RESUM_QMASK], %g4
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2006-02-08 17:53:50 +07:00
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/* Remember this entry's offset in %g1. */
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mov %g2, %g1
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/* Copy 64-byte queue entry into kernel buffer. */
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
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add %g2, 0x08, %g2
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
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add %g2, 0x08, %g2
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
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add %g2, 0x08, %g2
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
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add %g2, 0x08, %g2
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
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add %g2, 0x08, %g2
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
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add %g2, 0x08, %g2
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
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stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
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add %g2, 0x08, %g2
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ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
|
|
|
|
|
/* Update queue head pointer. */
|
|
|
|
|
and %g2, %g4, %g2
|
|
|
|
|
|
|
|
|
|
mov INTRQ_RESUM_MONDO_HEAD, %g4
|
|
|
|
|
stxa %g2, [%g4] ASI_QUEUE
|
|
|
|
|
membar #Sync
|
|
|
|
|
|
|
|
|
|
/* Disable interrupts and save register state so we can call
|
|
|
|
|
* C code. The etrap handling will leave %g4 in %l4 for us
|
|
|
|
|
* when it's done.
|
|
|
|
|
*/
|
|
|
|
|
rdpr %pil, %g2
|
2008-11-24 12:55:29 +07:00
|
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
2006-02-08 17:53:50 +07:00
|
|
|
mov %g1, %g4
|
|
|
|
|
ba,pt %xcc, etrap_irq
|
|
|
|
|
rd %pc, %g7
|
2006-11-17 04:38:57 +07:00
|
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
|
|
|
call trace_hardirqs_off
|
|
|
|
|
nop
|
|
|
|
|
#endif
|
2006-02-08 17:53:50 +07:00
|
|
|
/* Log the event. */
|
|
|
|
|
add %sp, PTREGS_OFF, %o0
|
|
|
|
|
call sun4v_resum_error
|
|
|
|
|
mov %l4, %o1
|
|
|
|
|
|
|
|
|
|
/* Return from trap. */
|
|
|
|
|
ba,pt %xcc, rtrap_irq
|
|
|
|
|
nop
|
|
|
|
|
|
|
|
|
|
sun4v_res_mondo_queue_empty:
|
|
|
|
|
retry
|
|
|
|
|
|
|
|
|
|
sun4v_res_mondo_queue_full:
|
|
|
|
|
/* The queue is full, consolidate our damage by setting
|
|
|
|
|
* the head equal to the tail. We'll just trap again otherwise.
|
|
|
|
|
* Call C code to log the event.
|
|
|
|
|
*/
|
|
|
|
|
mov INTRQ_RESUM_MONDO_HEAD, %g2
|
|
|
|
|
stxa %g4, [%g2] ASI_QUEUE
|
|
|
|
|
membar #Sync
|
|
|
|
|
|
|
|
|
|
rdpr %pil, %g2
|
2008-11-24 12:55:29 +07:00
|
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
2006-02-08 17:53:50 +07:00
|
|
|
ba,pt %xcc, etrap_irq
|
|
|
|
|
rd %pc, %g7
|
2006-11-17 04:38:57 +07:00
|
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
|
|
|
call trace_hardirqs_off
|
|
|
|
|
nop
|
|
|
|
|
#endif
|
2006-02-08 17:53:50 +07:00
|
|
|
call sun4v_resum_overflow
|
|
|
|
|
add %sp, PTREGS_OFF, %o0
|
|
|
|
|
|
|
|
|
|
ba,pt %xcc, rtrap_irq
|
|
|
|
|
nop
|
|
|
|
|
|
|
|
|
|
sun4v_nonres_mondo:
|
|
|
|
|
/* Head offset in %g2, tail offset in %g4. */
|
|
|
|
|
mov INTRQ_NONRESUM_MONDO_HEAD, %g2
|
|
|
|
|
ldxa [%g2] ASI_QUEUE, %g2
|
|
|
|
|
mov INTRQ_NONRESUM_MONDO_TAIL, %g4
|
|
|
|
|
ldxa [%g4] ASI_QUEUE, %g4
|
|
|
|
|
cmp %g2, %g4
|
|
|
|
|
be,pn %xcc, sun4v_nonres_mondo_queue_empty
|
|
|
|
|
nop
|
|
|
|
|
|
|
|
|
|
/* Get &trap_block[smp_processor_id()] into %g3. */
|
2006-02-11 06:39:51 +07:00
|
|
|
ldxa [%g0] ASI_SCRATCHPAD, %g3
|
|
|
|
|
sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
|
2006-02-08 17:53:50 +07:00
|
|
|
|
|
|
|
|
/* Get RES mondo queue base phys address into %g5. */
|
|
|
|
|
ldx [%g3 + TRAP_PER_CPU_NONRESUM_MONDO_PA], %g5
|
|
|
|
|
|
|
|
|
|
/* Get RES kernel buffer base phys address into %g7. */
|
|
|
|
|
ldx [%g3 + TRAP_PER_CPU_NONRESUM_KBUF_PA], %g7
|
|
|
|
|
|
|
|
|
|
/* If the first word is non-zero, queue is full. */
|
|
|
|
|
ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g1
|
|
|
|
|
brnz,pn %g1, sun4v_nonres_mondo_queue_full
|
|
|
|
|
nop
|
|
|
|
|
|
2007-05-26 05:49:59 +07:00
|
|
|
lduw [%g3 + TRAP_PER_CPU_NONRESUM_QMASK], %g4
|
|
|
|
|
|
2006-02-08 17:53:50 +07:00
|
|
|
/* Remember this entry's offset in %g1. */
|
|
|
|
|
mov %g2, %g1
|
|
|
|
|
|
|
|
|
|
/* Copy 64-byte queue entry into kernel buffer. */
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
|
|
|
|
|
stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
|
|
|
|
|
add %g2, 0x08, %g2
|
|
|
|
|
|
|
|
|
|
/* Update queue head pointer. */
|
|
|
|
|
and %g2, %g4, %g2
|
|
|
|
|
|
|
|
|
|
mov INTRQ_NONRESUM_MONDO_HEAD, %g4
|
|
|
|
|
stxa %g2, [%g4] ASI_QUEUE
|
|
|
|
|
membar #Sync
|
|
|
|
|
|
|
|
|
|
/* Disable interrupts and save register state so we can call
|
|
|
|
|
* C code. The etrap handling will leave %g4 in %l4 for us
|
|
|
|
|
* when it's done.
|
|
|
|
|
*/
|
|
|
|
|
rdpr %pil, %g2
|
2008-11-24 12:55:29 +07:00
|
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
2006-02-08 17:53:50 +07:00
|
|
|
mov %g1, %g4
|
|
|
|
|
ba,pt %xcc, etrap_irq
|
|
|
|
|
rd %pc, %g7
|
2006-11-17 04:38:57 +07:00
|
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
|
|
|
call trace_hardirqs_off
|
|
|
|
|
nop
|
|
|
|
|
#endif
|
2006-02-08 17:53:50 +07:00
|
|
|
/* Log the event. */
|
|
|
|
|
add %sp, PTREGS_OFF, %o0
|
|
|
|
|
call sun4v_nonresum_error
|
|
|
|
|
mov %l4, %o1
|
|
|
|
|
|
|
|
|
|
/* Return from trap. */
|
|
|
|
|
ba,pt %xcc, rtrap_irq
|
|
|
|
|
nop
|
|
|
|
|
|
|
|
|
|
sun4v_nonres_mondo_queue_empty:
|
|
|
|
|
retry
|
|
|
|
|
|
|
|
|
|
sun4v_nonres_mondo_queue_full:
|
|
|
|
|
/* The queue is full, consolidate our damage by setting
|
|
|
|
|
* the head equal to the tail. We'll just trap again otherwise.
|
|
|
|
|
* Call C code to log the event.
|
|
|
|
|
*/
|
|
|
|
|
mov INTRQ_NONRESUM_MONDO_HEAD, %g2
|
|
|
|
|
stxa %g4, [%g2] ASI_QUEUE
|
|
|
|
|
membar #Sync
|
|
|
|
|
|
|
|
|
|
rdpr %pil, %g2
|
2008-11-24 12:55:29 +07:00
|
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
2006-02-08 17:53:50 +07:00
|
|
|
ba,pt %xcc, etrap_irq
|
|
|
|
|
rd %pc, %g7
|
2006-11-17 04:38:57 +07:00
|
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
|
|
|
call trace_hardirqs_off
|
|
|
|
|
nop
|
|
|
|
|
#endif
|
2006-02-08 17:53:50 +07:00
|
|
|
call sun4v_nonresum_overflow
|
|
|
|
|
add %sp, PTREGS_OFF, %o0
|
|
|
|
|
|
|
|
|
|
ba,pt %xcc, rtrap_irq
|
|
|
|
|
nop
|