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2 years agotarget/mips: Convert MSA BIT instruction format to decodetree
Philippe Mathieu-Daudé [Tue, 19 Oct 2021 06:47:29 +0000 (08:47 +0200)]
target/mips: Convert MSA BIT instruction format to decodetree

Convert instructions with an immediate bit index and
data format df/m to decodetree.

Since the 'data format' field is a constant value, use
tcg_constant_i32() instead of a TCG temporary.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211028210843.2120802-11-f4bug@amsat.org>

2 years agotarget/mips: Convert MSA I5 instruction format to decodetree
Philippe Mathieu-Daudé [Tue, 19 Oct 2021 06:27:58 +0000 (08:27 +0200)]
target/mips: Convert MSA I5 instruction format to decodetree

Convert instructions with a 5-bit immediate value to decodetree.

Since the 'data format' field is a constant value, use
tcg_constant_i32() instead of a TCG temporary.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-10-f4bug@amsat.org>

2 years agotarget/mips: Convert MSA LDI opcode to decodetree
Philippe Mathieu-Daudé [Tue, 19 Oct 2021 06:22:31 +0000 (08:22 +0200)]
target/mips: Convert MSA LDI opcode to decodetree

Convert the LDI opcode (Immediate Load) to decodetree. Since it
overlaps with the generic MSA handler, use a decodetree overlap
group.

Since the 'data format' field is a constant value, use
tcg_constant_i32() instead of a TCG temporary.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-9-f4bug@amsat.org>

2 years agotarget/mips: Rename sa16 -> sa, bz_df -> bz -> bz_v
Philippe Mathieu-Daudé [Tue, 19 Oct 2021 06:18:25 +0000 (08:18 +0200)]
target/mips: Rename sa16 -> sa, bz_df -> bz -> bz_v

This 'shift amount' format is not always 16-bit, so name it
generically as 'sa'. This will help to unify the various
arg_msa decodetree generated structures.

Rename the @bz format -> @bz_v (specific @bz with df=3) and
@bz_df -> @bz (generic @bz).

Since we modify &msa_bz, re-align its arguments, so the other
structures added in the following commits stay visually aligned.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-8-f4bug@amsat.org>

2 years agotarget/mips: Use enum definitions from CPUMIPSMSADataFormat enum
Philippe Mathieu-Daudé [Tue, 19 Oct 2021 07:38:11 +0000 (09:38 +0200)]
target/mips: Use enum definitions from CPUMIPSMSADataFormat enum

Replace magic DataFormat value by the corresponding
enum from CPUMIPSMSADataFormat.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-7-f4bug@amsat.org>

2 years agotarget/mips: Have check_msa_access() return a boolean
Philippe Mathieu-Daudé [Sat, 23 Oct 2021 07:57:16 +0000 (09:57 +0200)]
target/mips: Have check_msa_access() return a boolean

Have check_msa_access() return a boolean value so we can
return early if MSA is not enabled (the instruction got
decoded properly, but we raised an exception).

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-6-f4bug@amsat.org>

2 years agotarget/mips: Use dup_const() to simplify
Philippe Mathieu-Daudé [Sun, 24 Oct 2021 18:10:08 +0000 (20:10 +0200)]
target/mips: Use dup_const() to simplify

The dup_const() helper makes the code easier to follow, use it.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211028210843.2120802-5-f4bug@amsat.org>

2 years agotarget/mips: Adjust style in msa_translate_init()
Philippe Mathieu-Daudé [Sat, 23 Oct 2021 07:54:20 +0000 (09:54 +0200)]
target/mips: Adjust style in msa_translate_init()

While the first 'off' variable assignment is unused, it helps
to better understand the code logic. Move the assignation where
it would have been used so it is easier to compare the MSA
registers based on FPU ones versus the MSA specific registers.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211023214803.522078-34-f4bug@amsat.org>

2 years agotarget/mips: Fix MSA MSUBV.B opcode
Philippe Mathieu-Daudé [Fri, 22 Oct 2021 09:33:49 +0000 (11:33 +0200)]
target/mips: Fix MSA MSUBV.B opcode

The result of the 'Vector Multiply and Subtract' opcode is
incorrect with Byte vectors. Probably due to a copy/paste error,
commit 5f148a02327 mistakenly used the $wt (target register)
instead  of $wd (destination register) as first operand. Fix that.

Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>
Fixes: 5f148a02327 ("target/mips: msa: Split helpers for MSUBV.<B|H|W|D>")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-3-f4bug@amsat.org>

2 years agotarget/mips: Fix MSA MADDV.B opcode
Philippe Mathieu-Daudé [Fri, 22 Oct 2021 09:33:42 +0000 (11:33 +0200)]
target/mips: Fix MSA MADDV.B opcode

The result of the 'Vector Multiply and Add' opcode is incorrect
with Byte vectors. Probably due to a copy/paste error, commit
7a7a162adde mistakenly used the $wt (target register) instead
of $wd (destination register) as first operand. Fix that.

Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>
Fixes: 7a7a162adde ("target/mips: msa: Split helpers for MADDV.<B|H|W|D>")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211028210843.2120802-2-f4bug@amsat.org>

2 years agoMAINTAINERS: Split MIPS TCG frontend vs MIPS machines/hardware
Philippe Mathieu-Daudé [Mon, 4 Oct 2021 08:26:38 +0000 (10:26 +0200)]
MAINTAINERS: Split MIPS TCG frontend vs MIPS machines/hardware

Hardware emulated models don't belong to the TCG MAINTAINERS
section. Move them to a new 'Overall MIPS Machines' section
in the 'MIPS Machines' group.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211004092515.3819836-4-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2 years agoMAINTAINERS: Add entries to cover MIPS CPS / GIC hardware
Philippe Mathieu-Daudé [Mon, 4 Oct 2021 08:26:23 +0000 (10:26 +0200)]
MAINTAINERS: Add entries to cover MIPS CPS / GIC hardware

MIPS CPS and GIC models are unrelated to the TCG frontend.
Move them as new sections under the 'Devices' group.

Cc: Paul Burton <paulburton@kernel.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211027041416.1237433-3-f4bug@amsat.org>

2 years agoMAINTAINERS: Add MIPS general architecture support entry
Philippe Mathieu-Daudé [Mon, 4 Oct 2021 08:31:57 +0000 (10:31 +0200)]
MAINTAINERS: Add MIPS general architecture support entry

The architecture is covered in TCG (frontend and backend)
and hardware models. Add a generic section matching the
'mips' word in patch subjects.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211004092515.3819836-2-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2 years agoMerge remote-tracking branch 'remotes/alex.williamson/tags/vfio-update-20211101.0...
Richard Henderson [Tue, 2 Nov 2021 11:25:59 +0000 (07:25 -0400)]
Merge remote-tracking branch 'remotes/alex.williamson/tags/vfio-update-20211101.0' into staging

VFIO update 2021-11-01

 * Re-enable expanded sub-page BAR mappings after migration (Kunkun Jiang)

 * Trace dropped listener sections due to page alignment (Kunkun Jiang)

# gpg: Signature made Mon 01 Nov 2021 03:48:28 PM EDT
# gpg:                using RSA key 42F6C04E540BD1A99E7B8A90239B9B6E3BB08B22
# gpg:                issuer "alex.williamson@redhat.com"
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>" [full]
# gpg:                 aka "Alex Williamson <alex@shazbot.org>" [full]
# gpg:                 aka "Alex Williamson <alwillia@redhat.com>" [full]
# gpg:                 aka "Alex Williamson <alex.l.williamson@gmail.com>" [full]

* remotes/alex.williamson/tags/vfio-update-20211101.0:
  vfio/common: Add a trace point when a MMIO RAM section cannot be mapped
  vfio/pci: Add support for mmapping sub-page MMIO BARs after live migration

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agoMerge remote-tracking branch 'remotes/philmd/tags/machine-20211101' into staging
Richard Henderson [Tue, 2 Nov 2021 09:53:45 +0000 (05:53 -0400)]
Merge remote-tracking branch 'remotes/philmd/tags/machine-20211101' into staging

Machine core patches

- Move GPIO code out of qdev.c
- Move hotplug code out of qdev.c
- Restrict various files to sysemu
- Move SMP code out of machine.c
- Add SMP parsing unit tests
- Move dynamic sysbus device check earlier

# gpg: Signature made Mon 01 Nov 2021 02:44:32 PM EDT
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# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* remotes/philmd/tags/machine-20211101:
  machine: remove the done notifier for dynamic sysbus device type check
  qdev-monitor: Check sysbus device type before creating it
  machine: add device_type_is_dynamic_sysbus function
  tests/unit: Add an unit test for smp parsing
  hw/core/machine: Split out the smp parsing code
  hw/core: Restrict hotplug to system emulation
  hw/core: Extract hotplug-related functions to qdev-hotplug.c
  hw/core: Declare meson source set
  hw/core: Restrict sysemu specific files
  machine: Move gpio code to hw/core/gpio.c

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agomachine: remove the done notifier for dynamic sysbus device type check
Damien Hedde [Fri, 29 Oct 2021 14:22:58 +0000 (16:22 +0200)]
machine: remove the done notifier for dynamic sysbus device type check

Now that we check sysbus device types during device creation, we
can remove the check in the machine init done notifier.
This was the only thing done by this notifier, so we remove the
whole sysbus_notifier structure of the MachineState.

Note: This notifier was checking all /peripheral and /peripheral-anon
sysbus devices. Now we only check those added by -device cli option or
device_add qmp command when handling the command/option. So if there
are some devices added in one of these containers manually (eg in
machine C code), these will not be checked anymore.
This use case does not seem to appear apart from
hw/xen/xen-legacy-backend.c (it uses qdev_set_id() and in this case,
not for a sysbus device, so it's ok).

Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211029142258.484907-4-damien.hedde@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agoqdev-monitor: Check sysbus device type before creating it
Damien Hedde [Fri, 29 Oct 2021 14:22:57 +0000 (16:22 +0200)]
qdev-monitor: Check sysbus device type before creating it

Add an early check to test if the requested sysbus device type
is allowed by the current machine before creating the device. This
impacts both -device cli option and device_add qmp command.

Before this patch, the check was done well after the device has
been created (in a machine init done notifier). We can now report
the error right away.

Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211029142258.484907-3-damien.hedde@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agomachine: add device_type_is_dynamic_sysbus function
Damien Hedde [Fri, 29 Oct 2021 14:22:56 +0000 (16:22 +0200)]
machine: add device_type_is_dynamic_sysbus function

Right now the allowance check for adding a sysbus device using
-device cli option (or device_add qmp command) is done well after
the device has been created. It is done during the machine init done
notifier: machine_init_notify() in hw/core/machine.c

This new function will allow us to do the check at the right time and
issue an error if it fails.

Also make device_is_dynamic_sysbus() use the new function.

Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211029142258.484907-2-damien.hedde@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agotests/unit: Add an unit test for smp parsing
Yanan Wang [Tue, 26 Oct 2021 03:46:59 +0000 (11:46 +0800)]
tests/unit: Add an unit test for smp parsing

Now that we have a generic parser smp_parse(), let's add an unit
test for the code. All possible valid/invalid SMP configurations
that the user can specify are covered.

Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211026034659.22040-3-wangyanan55@huawei.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <bfed7144-af86-7098-e7a6-731ff13c2cf7@huawei.com>
[PMD: Squashed format string fixup from Yanan Wang]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agohw/core/machine: Split out the smp parsing code
Yanan Wang [Tue, 26 Oct 2021 03:46:58 +0000 (11:46 +0800)]
hw/core/machine: Split out the smp parsing code

We are going to introduce an unit test for the parser smp_parse()
in hw/core/machine.c, but now machine.c is only built in softmmu.

In order to solve the build dependency on the smp parsing code and
avoid building unrelated stuff for the unit tests, move the tested
code from machine.c into a separate file, i.e., machine-smp.c and
build it in common field.

Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211026034659.22040-2-wangyanan55@huawei.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agohw/core: Restrict hotplug to system emulation
Philippe Mathieu-Daudé [Thu, 28 Oct 2021 14:57:35 +0000 (16:57 +0200)]
hw/core: Restrict hotplug to system emulation

Restrict hotplug to system emulation, add stubs for the other uses.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211028150521.1973821-5-philmd@redhat.com>

2 years agohw/core: Extract hotplug-related functions to qdev-hotplug.c
Philippe Mathieu-Daudé [Thu, 28 Oct 2021 14:36:38 +0000 (16:36 +0200)]
hw/core: Extract hotplug-related functions to qdev-hotplug.c

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211028150521.1973821-4-philmd@redhat.com>

2 years agohw/core: Declare meson source set
Philippe Mathieu-Daudé [Thu, 28 Oct 2021 14:34:19 +0000 (16:34 +0200)]
hw/core: Declare meson source set

As we want to be able to conditionally add files to the hw/core
file list, use a source set.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Tested-by: Yanan Wang <wangyanan55@huawei.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211028150521.1973821-3-philmd@redhat.com>

2 years agohw/core: Restrict sysemu specific files
Philippe Mathieu-Daudé [Thu, 28 Oct 2021 14:37:47 +0000 (16:37 +0200)]
hw/core: Restrict sysemu specific files

All these files don't make sense for tools and user emulation,
restrict them to system emulation.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Tested-by: Yanan Wang <wangyanan55@huawei.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211028150521.1973821-2-philmd@redhat.com>

2 years agomachine: Move gpio code to hw/core/gpio.c
Eduardo Habkost [Thu, 25 Apr 2019 20:00:48 +0000 (17:00 -0300)]
machine: Move gpio code to hw/core/gpio.c

Only softmmu code uses gpio, so move gpio code from qdev.c to
gpio.c and compile it only on softmmu mode.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190425200051.19906-2-ehabkost@redhat.com>
[PMD: Rebased]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agoMerge remote-tracking branch 'remotes/jsnow/tags/python-pull-request' into staging
Richard Henderson [Mon, 1 Nov 2021 18:34:15 +0000 (14:34 -0400)]
Merge remote-tracking branch 'remotes/jsnow/tags/python-pull-request' into staging

Pull request

# gpg: Signature made Mon 01 Nov 2021 01:29:49 PM EDT
# gpg:                using RSA key F9B7ABDBBCACDF95BE76CBD07DEF8106AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" [full]

* remotes/jsnow/tags/python-pull-request: (22 commits)
  python, iotests: replace qmp with aqmp
  python/aqmp: Create sync QMP wrapper for iotests
  iotests/300: avoid abnormal shutdown race condition
  iotests: Conditionally silence certain AQMP errors
  iotests: Accommodate async QMP Exception classes
  python/aqmp: Remove scary message
  python/machine: Handle QMP errors on close more meticulously
  python/machine: remove has_quit argument
  python: Add iotest linters to test suite
  iotests/linters: Add workaround for mypy bug #9852
  iotests/linters: Add entry point for linting via Python CI
  iotests: split linters.py out from 297
  iotests/297: split test into sub-cases
  iotests/297: update tool availability checks
  iotests/297: Change run_linter() to raise an exception on failure
  iotests/297: refactor run_[mypy|pylint] as generic execution shim
  iotests/297: Split run_linters apart into run_pylint and run_mypy
  iotests/297: Don't rely on distro-specific linter binaries
  iotests/297: Create main() function
  iotests/297: Add get_files() function
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agovfio/common: Add a trace point when a MMIO RAM section cannot be mapped
Kunkun Jiang [Wed, 27 Oct 2021 09:04:06 +0000 (17:04 +0800)]
vfio/common: Add a trace point when a MMIO RAM section cannot be mapped

The MSI-X structures of some devices and other non-MSI-X structures
may be in the same BAR. They may share one host page, especially in
the case of large page granularity, such as 64K.

For example, MSIX-Table size of 82599 NIC is 0x30 and the offset in
Bar 3(size 64KB) is 0x0. vfio_listener_region_add() will be called
to map the remaining range (0x30-0xffff). If host page size is 64KB,
it will return early at 'int128_ge((int128_make64(iova), llend))'
without any message. Let's add a trace point to inform users like commit
5c08600547c0 ("vfio: Use a trace point when a RAM section cannot be DMA mapped")
did.

Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
Link: https://lore.kernel.org/r/20211027090406.761-3-jiangkunkun@huawei.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2 years agovfio/pci: Add support for mmapping sub-page MMIO BARs after live migration
Kunkun Jiang [Wed, 27 Oct 2021 09:04:05 +0000 (17:04 +0800)]
vfio/pci: Add support for mmapping sub-page MMIO BARs after live migration

We can expand MemoryRegions of sub-page MMIO BARs in
vfio_pci_write_config() to improve IO performance for some
devices. However, the MemoryRegions of destination VM are
not expanded any more after live migration. Because their
addresses have been updated in vmstate_load_state()
(vfio_pci_load_config) and vfio_sub_page_bar_update_mapping()
will not be called.

This may result in poor performance after live migration.
So iterate BARs in vfio_pci_load_config() and try to update
sub-page BARs.

Reported-by: Nianyao Tang <tangnianyao@huawei.com>
Reported-by: Qixin Gan <ganqixin@huawei.com>
Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
Link: https://lore.kernel.org/r/20211027090406.761-2-jiangkunkun@huawei.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2 years agopython, iotests: replace qmp with aqmp
John Snow [Tue, 26 Oct 2021 17:56:12 +0000 (13:56 -0400)]
python, iotests: replace qmp with aqmp

Swap out the synchronous QEMUMonitorProtocol from qemu.qmp with the sync
wrapper from qemu.aqmp instead.

Add an escape hatch in the form of the environment variable
QEMU_PYTHON_LEGACY_QMP which allows you to cajole QEMUMachine into using
the old implementation, proving that both implementations work
concurrently.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211026175612.4127598-9-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agopython/aqmp: Create sync QMP wrapper for iotests
John Snow [Tue, 26 Oct 2021 17:56:11 +0000 (13:56 -0400)]
python/aqmp: Create sync QMP wrapper for iotests

This is a wrapper around the async QMPClient that mimics the old,
synchronous QEMUMonitorProtocol class. It is designed to be
interchangeable with the old implementation.

It does not, however, attempt to mimic Exception compatibility.

Signed-off-by: John Snow <jsnow@redhat.com>
Acked-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211026175612.4127598-8-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/300: avoid abnormal shutdown race condition
John Snow [Tue, 26 Oct 2021 17:56:10 +0000 (13:56 -0400)]
iotests/300: avoid abnormal shutdown race condition

Wait for the destination VM to close itself instead of racing to shut it
down first, which produces different error log messages from AQMP
depending on precisely when we tried to shut it down.

(For example: We may try to issue 'quit' immediately prior to the target
VM closing its QMP socket, which will cause an ECONNRESET error to be
logged. Waiting for the VM to exit itself avoids the race on shutdown
behavior.)

Reported-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211026175612.4127598-7-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests: Conditionally silence certain AQMP errors
John Snow [Tue, 26 Oct 2021 17:56:09 +0000 (13:56 -0400)]
iotests: Conditionally silence certain AQMP errors

AQMP likes to be very chatty about errors it encounters. In general,
this is good because it allows us to get good diagnostic information for
otherwise complex async failures.

For example, during a failed QMP connection attempt, we might see:

+ERROR:qemu.aqmp.qmp_client.qemub-2536319:Negotiation failed: EOFError
+ERROR:qemu.aqmp.qmp_client.qemub-2536319:Failed to establish session: EOFError

This might be nice in iotests output, because failure scenarios
involving the new QMP library will be spelled out plainly in the output
diffs.

For tests that are intentionally causing this scenario though, filtering
that log output could be a hassle. For now, add a context manager that
simply lets us toggle this output off during a critical region.

(Additionally, a forthcoming patch allows the use of either legacy or
async QMP to be toggled with an environment variable. In this
circumstance, we can't amend the iotest output to just always expect the
error message, either. Just suppress it for now. More rigorous log
filtering can be investigated later if/when it is deemed safe to
permanently replace the legacy QMP library.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 20211026175612.4127598-6-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests: Accommodate async QMP Exception classes
John Snow [Tue, 26 Oct 2021 17:56:08 +0000 (13:56 -0400)]
iotests: Accommodate async QMP Exception classes

(But continue to support the old ones for now, too.)

There are very few cases of any user of QEMUMachine or a subclass
thereof relying on a QMP Exception type. If you'd like to check for
yourself, you want to grep for all of the derivatives of QMPError,
excluding 'AQMPError' and its derivatives. That'd be these:

- QMPError
- QMPConnectError
- QMPCapabilitiesError
- QMPTimeoutError
- QMPProtocolError
- QMPResponseError
- QMPBadPortError

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 20211026175612.4127598-5-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agopython/aqmp: Remove scary message
John Snow [Tue, 26 Oct 2021 17:56:07 +0000 (13:56 -0400)]
python/aqmp: Remove scary message

The scary message interferes with the iotests output. Coincidentally, if
iotests works by removing this, then it's good evidence that we don't
really need to scare people away from using it.

Signed-off-by: John Snow <jsnow@redhat.com>
Acked-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211026175612.4127598-4-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agopython/machine: Handle QMP errors on close more meticulously
John Snow [Tue, 26 Oct 2021 17:56:06 +0000 (13:56 -0400)]
python/machine: Handle QMP errors on close more meticulously

To use the AQMP backend, Machine just needs to be a little more diligent
about what happens when closing a QMP connection. The operation is no
longer a freebie in the async world; it may return errors encountered in
the async bottom half on incoming message receipt, etc.

(AQMP's disconnect, ultimately, serves as the quiescence point where all
async contexts are gathered together, and any final errors reported at
that point.)

Because async QMP continues to check for messages asynchronously, it's
almost certainly likely that the loop will have exited due to EOF after
issuing the last 'quit' command. That error will ultimately be bubbled
up when attempting to close the QMP connection. The manager class here
then is free to discard it -- if it was expected.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 20211026175612.4127598-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agopython/machine: remove has_quit argument
John Snow [Tue, 26 Oct 2021 17:56:05 +0000 (13:56 -0400)]
python/machine: remove has_quit argument

If we spy on the QMP commands instead, we don't need callers to remember
to pass it. Seems like a fair trade-off.

The one slightly weird bit is overloading this instance variable for
wait(), where we use it to mean "don't issue the qmp 'quit'
command". This means that wait() will "fail" if the QEMU process does
not terminate of its own accord.

In most cases, we probably did already actually issue quit -- some
iotests do this -- but in some others, we may be waiting for QEMU to
terminate for some other reason, such as a test wherein we tell the
guest (directly) to shut down.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 20211026175612.4127598-2-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agopython: Add iotest linters to test suite
John Snow [Tue, 19 Oct 2021 14:49:17 +0000 (10:49 -0400)]
python: Add iotest linters to test suite

Run mypy and pylint on the iotests files directly from the Python CI
test infrastructure. This ensures that any accidental breakages to the
qemu.[qmp|aqmp|machine|utils] packages will be caught by that test
suite.

It also ensures that these linters are run with well-known versions and
test against a wide variety of python versions, which helps to find
accidental cross-version python compatibility issues.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-15-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/linters: Add workaround for mypy bug #9852
John Snow [Tue, 19 Oct 2021 14:49:16 +0000 (10:49 -0400)]
iotests/linters: Add workaround for mypy bug #9852

This one is insidious: if you write an import as "from {namespace}
import {subpackage}" as mirror-top-perms (now) does, mypy will fail on
every-other invocation *if* the package being imported is a typed,
installed, namespace-scoped package.

Upsettingly, that's exactly what 'qemu.[aqmp|qmp|machine]' et al are in
the context of Python CI tests.

Now, I could just edit mirror-top-perms to avoid this invocation, but
since I tripped on a landmine, I might as well head it off at the pass
and make sure nobody else trips on that same landmine.

It seems to have something to do with the order in which files are
checked as well, meaning the random order in which set(os.listdir())
produces the list of files to test will cause problems intermittently
and not just strictly "every other run".

This will be fixed in mypy >= 0.920, which is not released yet. The
workaround for now is to disable incremental checking, which avoids the
issue.

Note: This workaround is not applied when running iotest 297 directly,
because the bug does not surface there! Given the nature of CI jobs not
starting with any stale cache to begin with, this really only has a
half-second impact on manual runs of the Python test suite when executed
directly by a developer on their local machine. The workaround may be
removed when the Python package requirements can stipulate mypy 0.920 or
higher, which can happen as soon as it is released. (Barring any
unforseen compatibility issues that 0.920 may bring with it.)

See also:
 https://github.com/python/mypy/issues/11010
 https://github.com/python/mypy/issues/9852

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-14-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/linters: Add entry point for linting via Python CI
John Snow [Tue, 19 Oct 2021 14:49:15 +0000 (10:49 -0400)]
iotests/linters: Add entry point for linting via Python CI

We need at least a tiny little shim here to join test file discovery
with test invocation. This logic could conceivably be hosted somewhere
in python/, but I felt it was strictly the least-rude thing to keep the
test logic here in iotests/, even if this small function isn't itself an
iotest.

Note that we don't actually even need the executable bit here, we'll be
relying on the ability to run this module as a script using Python CLI
arguments. No chance it gets misunderstood as an actual iotest that way.

(It's named, not in tests/, doesn't have the execute bit, and doesn't
have an execution shebang.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-13-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests: split linters.py out from 297
John Snow [Tue, 19 Oct 2021 14:49:14 +0000 (10:49 -0400)]
iotests: split linters.py out from 297

Now, 297 is just the iotests-specific incantations and linters.py is as
minimal as I can think to make it. The only remaining element in here
that ought to be configuration and not code is the list of skip files,
but they're still numerous enough that repeating them for mypy and
pylint configurations both would be ... a hassle.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-12-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: split test into sub-cases
John Snow [Tue, 19 Oct 2021 14:49:13 +0000 (10:49 -0400)]
iotests/297: split test into sub-cases

Take iotest 297's main() test function and split it into two sub-cases
that can be skipped individually. We can also drop custom environment
setup from the pylint test as it isn't needed.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-11-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: update tool availability checks
John Snow [Tue, 19 Oct 2021 14:49:12 +0000 (10:49 -0400)]
iotests/297: update tool availability checks

As mentioned in 'iotests/297: Don't rely on distro-specific linter
binaries', these checks are overly strict. Update them to be in-line
with how we actually invoke the linters themselves.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-10-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: Change run_linter() to raise an exception on failure
John Snow [Tue, 19 Oct 2021 14:49:11 +0000 (10:49 -0400)]
iotests/297: Change run_linter() to raise an exception on failure

Instead of using a process return code as the python function return
value (or just not returning anything at all), allow run_linter() to
raise an exception instead.

The responsibility for printing output on error shifts from the function
itself to the caller, who will know best how to present/format that
information. (Also, "suppress_output" is now a lot more accurate of a
parameter name.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-9-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: refactor run_[mypy|pylint] as generic execution shim
John Snow [Tue, 19 Oct 2021 14:49:10 +0000 (10:49 -0400)]
iotests/297: refactor run_[mypy|pylint] as generic execution shim

There's virtually nothing special here anymore; we can combine these
into a single, rather generic function.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-8-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: Split run_linters apart into run_pylint and run_mypy
John Snow [Tue, 19 Oct 2021 14:49:09 +0000 (10:49 -0400)]
iotests/297: Split run_linters apart into run_pylint and run_mypy

Move environment setup into main(), and split the actual linter
execution into run_pylint and run_mypy, respectively.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-7-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: Don't rely on distro-specific linter binaries
John Snow [Tue, 19 Oct 2021 14:49:08 +0000 (10:49 -0400)]
iotests/297: Don't rely on distro-specific linter binaries

'pylint-3' is another Fedora-ism. Use "python3 -m pylint" or "python3 -m
mypy" to access these scripts instead. This style of invocation will
prefer the "correct" tool when run in a virtual environment.

Note that we still check for "pylint-3" before the test begins -- this
check is now "overly strict", but shouldn't cause anything that was
already running correctly to start failing. This is addressed by a
commit later in this series;
  'iotests/297: update tool availability checks'.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-6-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: Create main() function
John Snow [Tue, 19 Oct 2021 14:49:07 +0000 (10:49 -0400)]
iotests/297: Create main() function

Instead of running "run_linters" directly, create a main() function that
will be responsible for environment setup, leaving run_linters()
responsible only for execution of the linters.

(That environment setup will be moved over in forthcoming commits.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-5-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: Add get_files() function
John Snow [Tue, 19 Oct 2021 14:49:06 +0000 (10:49 -0400)]
iotests/297: Add get_files() function

Split out file discovery into its own method to begin separating out
configuration/setup and test execution.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-4-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: Split mypy configuration out into mypy.ini
John Snow [Tue, 19 Oct 2021 14:49:05 +0000 (10:49 -0400)]
iotests/297: Split mypy configuration out into mypy.ini

More separation of code and configuration.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoiotests/297: Move pylint config into pylintrc
John Snow [Tue, 19 Oct 2021 14:49:04 +0000 (10:49 -0400)]
iotests/297: Move pylint config into pylintrc

Move --score=n and --notes=XXX,FIXME into pylintrc. This pulls
configuration out of code, which I think is probably a good thing in
general.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20211019144918.3159078-2-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2 years agoMerge remote-tracking branch 'remotes/philmd/tags/renesas-20211030' into staging
Richard Henderson [Sat, 30 Oct 2021 18:31:41 +0000 (11:31 -0700)]
Merge remote-tracking branch 'remotes/philmd/tags/renesas-20211030' into staging

Renesas SH-4 patches queue

Patches from Zoltan:
- Various clean up to align the code style with the rest of the code base
- QOM'ify the SH_SERIAL device
- Modify few memory region size to better match the hardware manual

# gpg: Signature made Sat 30 Oct 2021 10:05:03 AM PDT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* remotes/philmd/tags/renesas-20211030: (30 commits)
  hw/timer/sh_timer: Remove use of hw_error
  hw/timer/sh_timer: Fix timer memory region size
  hw/timer/sh_timer: Do not wrap lines that are not too long
  hw/timer/sh_timer: Rename sh_timer_state to SHTimerState
  hw/intc/sh_intc: Remove unneeded local variable initialisers
  hw/intc/sh_intc: Simplify allocating sources array
  hw/intc/sh_intc: Avoid using continue in loops
  hw/intc/sh_intc: Replace abort() with g_assert_not_reached()
  hw/intc/sh_intc: Inline and drop sh_intc_source() function
  hw/intc/sh_intc: Use array index instead of pointer arithmetics
  hw/intc/sh_intc: Remove excessive parenthesis
  hw/intc/sh_intc: Move sh_intc_register() closer to its only user
  hw/intc/sh_intc: Drop another useless macro
  hw/intc/sh_intc: Rename iomem region
  hw/intc/sh_intc: Turn some defines into an enum
  hw/intc/sh_intc: Use existing macro instead of local one
  hw/char/sh_serial: Add device id to trace output
  hw/char/sh_serial: QOM-ify
  hw/char/sh_serial: Split off sh_serial_reset() from sh_serial_init()
  hw/char/sh_serial: Embed QEMUTimer in state struct
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agohw/timer/sh_timer: Remove use of hw_error
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/timer/sh_timer: Remove use of hw_error

The hw_error function calls abort and is not meant to be used by
devices. Use qemu_log_mask instead to log and ignore invalid accesses.
Also fix format strings to allow dropping type casts of hwaddr and use
__func__ instead of hard coding function name in the message which
were wrong in two cases.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <f818dc3dd2ac8c3b3d53067f316a716d7f9683d8.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/timer/sh_timer: Fix timer memory region size
BALATON Zoltan [Fri, 29 Oct 2021 23:27:40 +0000 (01:27 +0200)]
hw/timer/sh_timer: Fix timer memory region size

The timer unit only has registers that fit in a region 0x30 bytes
long. No need to have the timer region larger than that.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <b1cd196cf1395a602c7a08a4f858e69e50c446a1.1635550060.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/timer/sh_timer: Do not wrap lines that are not too long
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/timer/sh_timer: Do not wrap lines that are not too long

It's more readable to keep things on one line if it fits the length limit.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <97bc2a38991f33fd0c8cc2e4d0a3a29b20c47d1f.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/timer/sh_timer: Rename sh_timer_state to SHTimerState
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/timer/sh_timer: Rename sh_timer_state to SHTimerState

According to coding style types should be camel case, also remove
unneded casts from void *.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <d9a9d160c1153a583397e366ab06477f5a31c507.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Remove unneeded local variable initialisers
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Remove unneeded local variable initialisers

The sh_intc_locate function will either init these or not return so no
need to initialise them.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <15e04aa665c68ab5df47bbf505346d413be2fc1c.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Simplify allocating sources array
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Simplify allocating sources array

Use g_new0 instead of g_malloc0 and avoid some unneeded temporary
variable assignments.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <72efc4f2c4ff8b96848d03dca08e4541ee4076f6.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Avoid using continue in loops
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Avoid using continue in loops

Instead of if !expr continue else do something it is more straight
forward to say if expr then do something, especially if the action is
just a few lines. Remove such uses of continue to make the code easier
to follow.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <0efaa5e7a1a3ee11f82b3bb1942c287576c67f8b.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Replace abort() with g_assert_not_reached()
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Replace abort() with g_assert_not_reached()

All the places that call abort should not happen which is better
marked by g_assert_not_reached.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <039e6a784532f2af27f8adeafdb8e0391722f567.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Inline and drop sh_intc_source() function
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Inline and drop sh_intc_source() function

This function is very simple and provides no advantage. Call sites
become simpler without it so just write it in line and drop the
separate function.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <a98d1f7f94e91a42796b7d91e9153a7eaa3d1c44.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Use array index instead of pointer arithmetics
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Use array index instead of pointer arithmetics

Address of element i is one word thus clearer than array + i.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <f49c9b1dee1fcaf374b092d862a6821907d5fcdc.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Remove excessive parenthesis
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Remove excessive parenthesis

Drop unneded parenthesis and split up one complex expression to write
it with less brackets so it's easier to follow.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <a48e849e5b803a952ed15a2502cfece2bde68934.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Move sh_intc_register() closer to its only user
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Move sh_intc_register() closer to its only user

The sh_intc_register() function is only used at one place. Move them
together so it's easier to see what's going on.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <49f2742bc67cba7164385fafad204ab1e1bd3a0b.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Drop another useless macro
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Drop another useless macro

The INT_REG_PARAMS macro was only used a few times within one function
on adjacent lines and is actually more complex than writing out the
parameters so simplify it by expanding the macro at call sites and
dropping the #define.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <d3bdfdc5ab5ae1c51a6c6c38bde3829a99f85ce5.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Rename iomem region
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Rename iomem region

Rename the iomem region to "intc" from "interrupt-controller" which
makes the info mtree output less wide as it is already too wide
because of all the aliases. Also drop the format macro which was only
used twice in close proximity so we can just use the literal string
instead without a macro definition.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <cb6402dab6b44c804142b5cf9af68e6398cb613f.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Turn some defines into an enum
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Turn some defines into an enum

Turn the INTC_MODE defines into an enum and clean up the function
returning these to make it clearer by removing nested ifs and
superfluous parenthesis. The one remaining #define is a flag which is
moved further apart by changing its value from 8 to 0x80 to leave some
spare bits as this is or-ed with the enum value at some places.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <4adf4e1ac9d2e728e5a536c69e310d77f0c4455a.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/intc/sh_intc: Use existing macro instead of local one
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/intc/sh_intc: Use existing macro instead of local one

The INTC_A7 local macro does the same as the A7ADDR from
include/sh/sh.h so use the latter and drop the local macro definition.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <53f033477c73b7c9b021d36033c590416d6199c7.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/char/sh_serial: Add device id to trace output
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/char/sh_serial: Add device id to trace output

Normally there are at least two sh_serial instances. Add device id to
trace messages to make it clear which instance they belong to
otherwise its not possible to tell which serial device is accessed.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <cc1f9ff9f4259ae799750e452f8871849c7a104c.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/char/sh_serial: QOM-ify
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/char/sh_serial: QOM-ify

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <92902ba34fdf2c8c62232365fbb6531b1036d557.1635541329.git.balaton@eik.bme.hu>
[PMD: Use g_strdup() to initialize DeviceState::id]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/char/sh_serial: Split off sh_serial_reset() from sh_serial_init()
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/char/sh_serial: Split off sh_serial_reset() from sh_serial_init()

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <ffb46f2814794c8dfc2c5a0cf83086a7bd754e10.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/char/sh_serial: Embed QEMUTimer in state struct
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/char/sh_serial: Embed QEMUTimer in state struct

Instead of allocating timer with timer_new store it directly in the
state struct. This makes it simpler to free it together with the device.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <fd01eb3720ec32dab06e03019f72f3e177033679.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/char/sh_serial: Rename type sh_serial_state to SHSerialState
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/char/sh_serial: Rename type sh_serial_state to SHSerialState

Coding style says types should be camel case.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <0f185653528c99eeeb2b4e4afb8b818d93298c20.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/char/sh_serial: Do not abort on invalid access
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/char/sh_serial: Do not abort on invalid access

Replace fprintf with qemu_log_mask LOG_GUEST_ERROR as the intention is
to handle valid accesses in these functions so if we get to these
errors then it's an invalid access. Do not abort as that would allow
the guest to crash QEMU and the practice in other devices is to not do
that just log and ignore the invalid access. While at it also simplify
the complex bit ops to check if a return value was set which can be
done much simpler and clearer.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <6b46045141d6d9cc32e17c223896fa1116384796.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4/r2d: Use error_report instead of fprintf to stderr
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4/r2d: Use error_report instead of fprintf to stderr

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <7f320ab72f3d4d43cd62925230a9f83583413f67.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4: Change debug printfs to traces
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4: Change debug printfs to traces

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <b776043e811ab3caf200515e1350bdcccd1cc47b.1635541329.git.balaton@eik.bme.hu>
[PMD: Fixed format strings for 32-bit hosts]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4: Fix typos in a comment
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4: Fix typos in a comment

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <a84405db64ef81bff1a16526da290cc68f1444db.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4: Coding style: Remove unnecessary casts
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4: Coding style: Remove unnecessary casts

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <6cb1bcf24572ad8465c20b64fec81157f34bcbe9.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4: Coding style: Add missing braces
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4: Coding style: Add missing braces

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <b53a8cbcf57207fbd6408db1007b3e82008d60f7.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4: Coding style: White space fixes
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4: Coding style: White space fixes

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <91698c54fa493a4cfe93546211206439787d4b78.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4: Coding style: Fix multi-line comments
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4: Coding style: Fix multi-line comments

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <3f192c699f4e5949ec0fcc436e5610f50afe2dbf.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agohw/sh4: Coding style: Remove tabs
BALATON Zoltan [Fri, 29 Oct 2021 21:02:09 +0000 (23:02 +0200)]
hw/sh4: Coding style: Remove tabs

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <2d9b2c470ec022cc85a25b3e5de337b5e794f7f6.1635541329.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2 years agoMerge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2021-10-29' into staging
Richard Henderson [Sat, 30 Oct 2021 02:42:36 +0000 (19:42 -0700)]
Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2021-10-29' into staging

QAPI patches patches for 2021-10-29

# gpg: Signature made Fri 29 Oct 2021 12:28:53 PM PDT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]

* remotes/armbru/tags/pull-qapi-2021-10-29:
  qapi: Extend -compat to set policy for unstable interfaces
  qapi: Factor out compat_policy_input_ok()
  qapi: Generalize enum member policy checking
  qapi: Generalize command policy checking
  qapi: Generalize struct member policy checking
  qapi: Tools for sets of special feature flags in generated code
  qapi: Eliminate QCO_NO_OPTIONS for a slight simplification
  qapi: Mark unstable QMP parts with feature 'unstable'
  qapi: New special feature flag "unstable"

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agoMerge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging
Richard Henderson [Fri, 29 Oct 2021 20:54:19 +0000 (13:54 -0700)]
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging

x86 queue, 2021-10-29

Bug fixes:
* Remove core-capability in Snowridge CPU model

# gpg: Signature made Fri 29 Oct 2021 12:05:14 PM PDT
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# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]

* remotes/ehabkost/tags/x86-next-pull-request:
  target/i386: Remove core-capability in Snowridge CPU model

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agoqapi: Extend -compat to set policy for unstable interfaces
Markus Armbruster [Thu, 28 Oct 2021 10:25:20 +0000 (12:25 +0200)]
qapi: Extend -compat to set policy for unstable interfaces

New option parameters unstable-input and unstable-output set policy
for unstable interfaces just like deprecated-input and
deprecated-output set policy for deprecated interfaces (see commit
6dd75472d5 "qemu-options: New -compat to set policy for deprecated
interfaces").  This is intended for testing users of the management
interfaces.  It is experimental.

For now, this covers only syntactic aspects of QMP, i.e. stuff tagged
with feature 'unstable'.  We may want to extend it to cover semantic
aspects, or the command line.

Note that there is no good way for management application to detect
presence of these new option parameters: they are not visible output
of query-qmp-schema or query-command-line-options.  Tolerable, because
it's meant for testing.  If running with -compat fails, skip the test.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-10-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[Doc comments fixed up]

2 years agoqapi: Factor out compat_policy_input_ok()
Markus Armbruster [Thu, 28 Oct 2021 10:25:19 +0000 (12:25 +0200)]
qapi: Factor out compat_policy_input_ok()

The code to check policy for handling deprecated input is triplicated.
Factor it out into compat_policy_input_ok() before I mess with it in
the next commit.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211028102520.747396-9-armbru@redhat.com>
[Policy code moved from qmp-dispatch.c to qapi-util.c to make visitors
link without qmp-dispatch.o]

2 years agotarget/i386: Remove core-capability in Snowridge CPU model
Chenyi Qiang [Fri, 27 Aug 2021 06:48:18 +0000 (14:48 +0800)]
target/i386: Remove core-capability in Snowridge CPU model

Because core-capability releated features are model-specific and KVM
won't support it, remove the core-capability in CPU model to avoid the
warning message.

Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20210827064818.4698-3-chenyi.qiang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2 years agoMerge remote-tracking branch 'remotes/alistair23/tags/pull-riscv-to-apply-20211029...
Richard Henderson [Fri, 29 Oct 2021 17:59:09 +0000 (10:59 -0700)]
Merge remote-tracking branch 'remotes/alistair23/tags/pull-riscv-to-apply-20211029-1' into staging

Fifth RISC-V PR for QEMU 6.2

 - Use a shared PLIC config helper function
 - Fixup the OpenTitan PLIC configuration
 - Add support for the experimental J extension
 - Update the fmin/fmax handling
 - Fixup VS interrupt forwarding

# gpg: Signature made Fri 29 Oct 2021 12:03:47 AM PDT
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# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]

* remotes/alistair23/tags/pull-riscv-to-apply-20211029-1:
  target/riscv: change the api for RVF/RVD fmin/fmax
  softfloat: add APIs to handle alternative sNaN propagation for fmax/fmin
  target/riscv: remove force HS exception
  target/riscv: fix VS interrupts forwarding to HS
  target/riscv: Allow experimental J-ext to be turned on
  target/riscv: Implement address masking functions required for RISC-V Pointer Masking extension
  target/riscv: Support pointer masking for RISC-V for i/c/f/d/a types of instructions
  target/riscv: Print new PM CSRs in QEMU logs
  target/riscv: Add J extension state description
  target/riscv: Support CSRs required for RISC-V PM extension except for the h-mode
  target/riscv: Add CSR defines for RISC-V PM extension
  target/riscv: Add J-extension into RISC-V
  hw/riscv: opentitan: Fixup the PLIC context addresses
  hw/riscv: virt: Use the PLIC config helper function
  hw/riscv: microchip_pfsoc: Use the PLIC config helper function
  hw/riscv: sifive_u: Use the PLIC config helper function
  hw/riscv: boot: Add a PLIC config string function
  hw/riscv: virt: Don't use a macro for the PLIC configuration

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agoqapi: Generalize enum member policy checking
Markus Armbruster [Thu, 28 Oct 2021 10:25:18 +0000 (12:25 +0200)]
qapi: Generalize enum member policy checking

The code to check enumeration value policy can see special feature
flag 'deprecated' in QEnumLookup member flags[value].  I want to make
feature flag 'unstable' visible there as well, so I can add policy for
it.

Instead of extending flags[], replace it by @special_features (a
bitset of QapiSpecialFeature), because that's how special features get
passed around elsewhere.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-8-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agoqapi: Generalize command policy checking
Markus Armbruster [Thu, 28 Oct 2021 10:25:17 +0000 (12:25 +0200)]
qapi: Generalize command policy checking

The code to check command policy can see special feature flag
'deprecated' as command flag QCO_DEPRECATED.  I want to make feature
flag 'unstable' visible there as well, so I can add policy for it.

To let me make it visible, add member @special_features (a bitset of
QapiSpecialFeature) to QmpCommand, and adjust the generator to pass it
through qmp_register_command().  Then replace "QCO_DEPRECATED in
@flags" by QAPI_DEPRECATED in @special_features", and drop
QCO_DEPRECATED.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-7-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2 years agoqapi: Generalize struct member policy checking
Markus Armbruster [Thu, 28 Oct 2021 10:25:16 +0000 (12:25 +0200)]
qapi: Generalize struct member policy checking

The generated visitor functions call visit_deprecated_accept() and
visit_deprecated() when visiting a struct member with special feature
flag 'deprecated'.  This makes the feature flag visible to the actual
visitors.  I want to make feature flag 'unstable' visible there as
well, so I can add policy for it.

To let me make it visible, replace these functions by
visit_policy_reject() and visit_policy_skip(), which take the member's
special features as an argument.  Note that the new functions have the
opposite sense, i.e. the return value flips.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211028102520.747396-6-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[Unbreak forward visitor]

2 years agoMerge remote-tracking branch 'remotes/rth/tags/pull-tcg-20211028' into staging
Richard Henderson [Fri, 29 Oct 2021 15:39:44 +0000 (08:39 -0700)]
Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20211028' into staging

Improvements to qemu/int128
Fixes for 128/64 division.
Cleanup tcg/optimize.c
Optimize redundant sign extensions

# gpg: Signature made Thu 28 Oct 2021 09:06:00 PM PDT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* remotes/rth/tags/pull-tcg-20211028: (60 commits)
  softmmu: fix for "after access" watchpoints
  softmmu: remove useless condition in watchpoint check
  softmmu: fix watchpoint processing in icount mode
  tcg/optimize: Propagate sign info for shifting
  tcg/optimize: Propagate sign info for bit counting
  tcg/optimize: Propagate sign info for setcond
  tcg/optimize: Propagate sign info for logical operations
  tcg/optimize: Optimize sign extensions
  tcg/optimize: Use fold_xx_to_i for rem
  tcg/optimize: Use fold_xi_to_x for div
  tcg/optimize: Use fold_xi_to_x for mul
  tcg/optimize: Use fold_xx_to_i for orc
  tcg/optimize: Stop forcing z_mask to "garbage" for 32-bit values
  tcg: Extend call args using the correct opcodes
  tcg/optimize: Sink commutative operand swapping into fold functions
  tcg/optimize: Expand fold_addsub2_i32 to 64-bit ops
  tcg/optimize: Expand fold_mulu2_i32 to all 4-arg multiplies
  tcg/optimize: Split out fold_masks
  tcg/optimize: Split out fold_ix_to_i
  tcg/optimize: Split out fold_xi_to_x
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2 years agoqapi: Tools for sets of special feature flags in generated code
Markus Armbruster [Thu, 28 Oct 2021 10:25:15 +0000 (12:25 +0200)]
qapi: Tools for sets of special feature flags in generated code

New enum QapiSpecialFeature enumerates the special feature flags.

New helper gen_special_features() returns code to represent a
collection of special feature flags as a bitset.

The next few commits will put them to use.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-5-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2 years agoqapi: Eliminate QCO_NO_OPTIONS for a slight simplification
Markus Armbruster [Thu, 28 Oct 2021 10:25:14 +0000 (12:25 +0200)]
qapi: Eliminate QCO_NO_OPTIONS for a slight simplification

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-4-armbru@redhat.com>

2 years agoqapi: Mark unstable QMP parts with feature 'unstable'
Markus Armbruster [Thu, 28 Oct 2021 10:25:13 +0000 (12:25 +0200)]
qapi: Mark unstable QMP parts with feature 'unstable'

Add special feature 'unstable' everywhere the name starts with 'x-',
except for InputBarrierProperties member x-origin and
MemoryBackendProperties member x-use-canonical-path-for-ramblock-id,
because these two are actually stable.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-3-armbru@redhat.com>

2 years agoqapi: New special feature flag "unstable"
Markus Armbruster [Thu, 28 Oct 2021 10:25:12 +0000 (12:25 +0200)]
qapi: New special feature flag "unstable"

By convention, names starting with "x-" are experimental.  The parts
of external interfaces so named may be withdrawn or changed
incompatibly in future releases.

The naming convention makes unstable interfaces easy to recognize.
Promoting something from experimental to stable involves a name
change.  Client code needs to be updated.  Occasionally bothersome.

Worse, the convention is not universally observed:

* QOM type "input-barrier" has properties "x-origin", "y-origin".
  Looks accidental, but it's ABI since 4.2.

* QOM types "memory-backend-file", "memory-backend-memfd",
  "memory-backend-ram", and "memory-backend-epc" have a property
  "x-use-canonical-path-for-ramblock-id" that is documented to be
  stable despite its name.

We could document these exceptions, but documentation helps only
humans.  We want to recognize "unstable" in code, like "deprecated".

So support recognizing it the same way: introduce new special feature
flag "unstable".  It will be treated specially by the QAPI generator,
like the existing feature flag "deprecated", and unlike regular
feature flags.

This commit updates documentation and prepares tests.  The next commit
updates the QAPI schema.  The remaining patches update the QAPI
generator and wire up -compat policy checking.

Management applications can then use query-qmp-schema and -compat to
manage or guard against use of unstable interfaces the same way as for
deprecated interfaces.

docs/devel/qapi-code-gen.txt no longer mandates the naming convention.
Using it anyway might help writers of programs that aren't
full-fledged management applications.  Not using it can save us
bothersome renames.  We'll see how that shakes out.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-2-armbru@redhat.com>

2 years agotarget/riscv: change the api for RVF/RVD fmin/fmax
Chih-Min Chao [Thu, 21 Oct 2021 16:08:46 +0000 (00:08 +0800)]
target/riscv: change the api for RVF/RVD fmin/fmax

The sNaN propagation behavior has been changed since cd20cee7 in
https://github.com/riscv/riscv-isa-manual.

In Priv spec v1.10, RVF is v2.0. fmin.s and fmax.s are implemented with
IEEE 754-2008 minNum and maxNum operations.

In Priv spec v1.11, RVF is v2.2. fmin.s and fmax.s are amended to
implement IEEE 754-2019 minimumNumber and maximumNumber operations.

Therefore, to prevent the risk of having too many version variables.
Instead of introducing an extra *fext_ver* variable, we tie RVF version
to Priv version. Though it's not completely accurate but is close enough.

Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20211021160847.2748577-3-frank.chang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2 years agosoftfloat: add APIs to handle alternative sNaN propagation for fmax/fmin
Chih-Min Chao [Thu, 21 Oct 2021 16:08:45 +0000 (00:08 +0800)]
softfloat: add APIs to handle alternative sNaN propagation for fmax/fmin

For "fmax/fmin ft0, ft1, ft2" and if one of the inputs is sNaN,

  The original logic:
    Return NaN and set invalid flag if ft1 == sNaN || ft2 == sNan.

  The alternative path:
    Set invalid flag if ft1 == sNaN || ft2 == sNaN.
    Return NaN only if ft1 == NaN && ft2 == NaN.

The IEEE 754 spec allows both implementation and some architecture such
as riscv choose different defintions in two spec versions.
(riscv-spec-v2.2 use original version, riscv-spec-20191213 changes to
 alternative)

Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211021160847.2748577-2-frank.chang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2 years agotarget/riscv: remove force HS exception
Jose Martins [Tue, 26 Oct 2021 14:51:26 +0000 (15:51 +0100)]
target/riscv: remove force HS exception

There is no need to "force an hs exception" as the current privilege
level, the state of the global ie and of the delegation registers should
be enough to route the interrupt to the appropriate privilege level in
riscv_cpu_do_interrupt. The is true for both asynchronous and
synchronous exceptions, specifically, guest page faults which must be
hardwired to zero hedeleg. As such the hs_force_except mechanism can be
removed.

Signed-off-by: Jose Martins <josemartins90@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20211026145126.11025-3-josemartins90@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2 years agotarget/riscv: fix VS interrupts forwarding to HS
Jose Martins [Tue, 26 Oct 2021 14:51:25 +0000 (15:51 +0100)]
target/riscv: fix VS interrupts forwarding to HS

VS interrupts (2, 6, 10) were not correctly forwarded to hs-mode when
not delegated in hideleg (which was not being taken into account). This
was mainly because hs level sie was not always considered enabled when
it should. The spec states that "Interrupts for higher-privilege modes,
y>x, are always globally enabled regardless of the setting of the global
yIE bit for the higher-privilege mode." and also "For purposes of
interrupt global enables, HS-mode is considered more privileged than
VS-mode, and VS-mode is considered more privileged than VU-mode". Also,
vs-level interrupts were not being taken into account unless V=1, but
should be unless delegated.

Finally, there is no need for a special case for to handle vs interrupts
as the current privilege level, the state of the global ie and of the
delegation registers should be enough to route all interrupts to the
appropriate privilege level in riscv_cpu_do_interrupt.

Signed-off-by: Jose Martins <josemartins90@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20211026145126.11025-2-josemartins90@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2 years agoMerge remote-tracking branch 'remotes/quic/tags/pull-hex-20211028' into staging
Richard Henderson [Fri, 29 Oct 2021 04:43:45 +0000 (21:43 -0700)]
Merge remote-tracking branch 'remotes/quic/tags/pull-hex-20211028' into staging

Followup to replace more tcg_const_* with tcg_constant_tl*
Fix bug to delay writes to USR until packet commit

# gpg: Signature made Thu 28 Oct 2021 08:59:24 PM PDT
# gpg:                using RSA key 7B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 3635 C788 CE62 B91F D4C5  9AB4 7B02 44FB 12DE 4422

* remotes/quic/tags/pull-hex-20211028:
  Hexagon (target/hexagon) put writes to USR into temp until commit
  Hexagon (target/hexagon) more tcg_constant_*

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>