Commit Graph

81048 Commits

Author SHA1 Message Date
Kevin Wolf
1c8222b014 nbd: Add max-connections to nbd-server-start
This is a QMP equivalent of qemu-nbd's --shared option, limiting the
maximum number of clients that can attach at the same time.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-9-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Kevin Wolf
9b562c646b block/export: Remove magic from block-export-add
nbd-server-add tries to be convenient and adds two questionable
features that we don't want to share in block-export-add, even for NBD
exports:

1. When requesting a writable export of a read-only device, the export
   is silently downgraded to read-only. This should be an error in the
   context of block-export-add.

2. When using a BlockBackend name, unplugging the device from the guest
   will automatically stop the NBD server, too. This may sometimes be
   what you want, but it could also be very surprising. Let's keep
   things explicit with block-export-add. If the user wants to stop the
   export, they should tell us so.

Move these things into the nbd-server-add QMP command handler so that
they apply only there.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-8-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Kevin Wolf
b57e4de079 qemu-nbd: Use raw block driver for --offset
Instead of implementing qemu-nbd --offset in the NBD code, just put a
raw block node with the requested offset on top of the user image and
rely on that doing the job.

This does not only simplify the nbd_export_new() interface and bring it
closer to the set of options that the nbd-server-add QMP command offers,
but in fact it also eliminates a potential source for bugs in the NBD
code which previously had to add the offset manually in all relevant
places.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-7-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Kevin Wolf
060102ad65 qemu-storage-daemon: Use qmp_block_export_add()
No reason to duplicate the functionality locally, we can now just reuse
the QMP command block-export-add for --export.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-6-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Kevin Wolf
56ee86261e block/export: Add BlockExport infrastructure and block-export-add
We want to have a common set of commands for all types of block exports.
Currently, this is only NBD, but we're going to add more types.

This patch adds the basic BlockExport and BlockExportDriver structs and
a QMP command block-export-add that creates a new export based on the
given BlockExportOptions.

qmp_nbd_server_add() becomes a wrapper around qmp_block_export_add().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-5-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Kevin Wolf
143ea7670c qapi: Rename BlockExport to BlockExportOptions
The name BlockExport will be used for the struct containing the runtime
state of block exports, so change the name of export creation options.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-4-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Kevin Wolf
5daa6bfd8e qapi: Create block-export module
Move all block export related types and commands from block-core to the
new QAPI module block-export.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-3-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Kevin Wolf
8760366cdb nbd: Remove unused nbd_export_get_blockdev()
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-2-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Dr. David Alan Gilbert
da16f4b867 qemu-io-cmds: Simplify help_oneline
help_oneline is declared and starts as:

  static void help_oneline(const char *cmd, const cmdinfo_t *ct)
  {
      if (cmd) {
          printf("%s ", cmd);
      } else {
          printf("%s ", ct->name);
          if (ct->altname) {
              printf("(or %s) ", ct->altname);
          }
      }

However, there are only two routes to help_oneline being called:

   help_f -> help_all -> help_oneline(ct->name, ct)

   help_f -> help_onecmd(argv[1], ct)

In the first case, 'cmd' and 'ct->name' are the same thing,
so it's impossible for the if (cmd) to be false and then validly
print ct->name - this is upsetting gcc
( https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96739 )

In the second case, cmd is argv[1] and we know we've got argv[1]
so again (cmd) is non-NULL.

Simplify help_oneline by just printing cmd.
(Also strengthen argc check just to be pedantic)

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200824102914.105619-1-dgilbert@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Alberto Garcia
8e7b122bf8 docs: Document the throttle block filter
This filter was added back in 2017 for QEMU 2.11 but it was never
properly documented, so let's explain how it works and add a couple of
examples.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20200921173016.27935-1-berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Thomas Huth
0f3231bfb5 tests/check-block: Do not run the iotests with old versions of bash
macOS is shipped with a very old version of the bash (3.2), which
is currently not suitable for running the iotests anymore (e.g.
it is missing support for "readarray" which is used in the file
tests/qemu-iotests/common.filter). Add a check to skip the iotests
in this case - if someone still wants to run the iotests on macOS,
they can install a newer version from homebrew, for example.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200918153514.330705-1-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Philippe Mathieu-Daudé
74f2e02766 block/sheepdog: Replace magic val by NANOSECONDS_PER_SECOND definition
Use self-explicit NANOSECONDS_PER_SECOND definition instead
of magic value.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200921110145.520944-1-philmd@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-10-02 15:46:40 +02:00
Peter Maydell
0d2a4545bf Python testing updates:
- drop python 3.5 test from travis
   - replace Debian 9 containers with 10
   - increase cross build timeout
   - bump minimum python version in configure
   - move user plugins tests to gitlab
   - split deprecated builds into build and test
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-and-python-021020-1' into staging

Python testing updates:

  - drop python 3.5 test from travis
  - replace Debian 9 containers with 10
  - increase cross build timeout
  - bump minimum python version in configure
  - move user plugins tests to gitlab
  - split deprecated builds into build and test

# gpg: Signature made Fri 02 Oct 2020 12:34:36 BST
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-testing-and-python-021020-1:
  gitlab: split deprecated job into build/check stages
  gitlab: move linux-user plugins test across to gitlab
  configure: Bump the minimum required Python version to 3.6
  gitlab-ci: Increase the timeout for the cross-compiler builds
  tests/docker: Remove old Debian 9 containers
  shippable.yml: Remove the Debian9-based MinGW cross-compiler tests
  tests/docker: Update the tricore container to debian 10
  gitlab-ci: Remove the Debian9-based containers and containers-layer3
  tests/docker: Use Fedora containers for MinGW cross-builds in the gitlab-CI
  travis.yml: Drop the Python 3.5 build
  travis.yml: Drop the superfluous Python 3.6 build
  travis.yml: Update Travis to use Bionic and Focal instead of Xenial
  travis.yml: Drop the default softmmu builds
  migration: Silence compiler warning in global_state_store_running()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-02 13:39:20 +01:00
Alex Bennée
2614670b75 gitlab: split deprecated job into build/check stages
While the job is pretty fast for only a few targets we still want to
catch breakage of the build. By splitting the test step we can
allow_failures for that while still ensuring we don't miss the build
breaking.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201002091538.3017-1-alex.bennee@linaro.org>
2020-10-02 12:31:34 +01:00
Alex Bennée
8cdb2cef3f gitlab: move linux-user plugins test across to gitlab
Even with the recent split moving beefier plugins into contrib and
dropping them from the check-tcg tests we are still hitting time
limits. This possibly points to a slow down of --debug-tcg but seeing
as we are migrating stuff to gitlab we might as well move there and
bump the timeout.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201002103223.24022-1-alex.bennee@linaro.org>
2020-10-02 12:31:25 +01:00
Thomas Huth
1b11f28d05 configure: Bump the minimum required Python version to 3.6
All our supported build platforms have Python 3.6 or newer nowadays, and
there are some useful features in Python 3.6 which are not available in
3.5 yet (e.g. the type hint annotations which will allow us to statically
type the QAPI parser), so let's bump the minimum Python version to 3.6 now.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200923162908.95372-1-thuth@redhat.com>
Message-Id: <20200925154027.12672-16-alex.bennee@linaro.org>
2020-10-02 12:29:23 +01:00
Thomas Huth
254ef17e3f gitlab-ci: Increase the timeout for the cross-compiler builds
Some of the cross-compiler builds (the mips build and the win64 build
for example) are quite slow and sometimes hit the 1h time limit.
Increase the limit a little bit to make sure that we do not get failures
in the CI runs just because of some few minutes.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200921174320.46062-7-thuth@redhat.com>
Message-Id: <20200925154027.12672-15-alex.bennee@linaro.org>
2020-10-02 12:29:21 +01:00
Thomas Huth
e3755276d1 tests/docker: Remove old Debian 9 containers
We do not support Debian 9 in QEMU anymore, and the Debian 9 containers
are now no longer used in the gitlab-CI. Time to remove them.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200921174320.46062-6-thuth@redhat.com>
Message-Id: <20200925154027.12672-14-alex.bennee@linaro.org>
2020-10-02 12:29:15 +01:00
Thomas Huth
4a73cefbda shippable.yml: Remove the Debian9-based MinGW cross-compiler tests
We're not supporting Debian 9 anymore, and we are now testing
MinGW cross-compiler builds in the gitlab-CI, too, so we do not
really need these jobs in the shippable.yml anymore.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200921174320.46062-5-thuth@redhat.com>
Message-Id: <20200925154027.12672-13-alex.bennee@linaro.org>
2020-10-02 12:29:11 +01:00
Thomas Huth
cf63177e59 tests/docker: Update the tricore container to debian 10
We do not support Debian 9 anymore, thus update the Tricore container
to Debian 10 now.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200921174320.46062-4-thuth@redhat.com>
Message-Id: <20200925154027.12672-12-alex.bennee@linaro.org>
2020-10-02 12:29:08 +01:00
Thomas Huth
5fdf6e22d9 gitlab-ci: Remove the Debian9-based containers and containers-layer3
According to our support policy, Debian 9 is not supported by the
QEMU project anymore. Since we now switched the MinGW cross-compiler
builds to Fedora, we do not need these Debian9-based containers
in the gitlab-CI anymore, and can now also get rid of the "layer3"
container build stage this way.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200921174320.46062-3-thuth@redhat.com>
Message-Id: <20200925154027.12672-11-alex.bennee@linaro.org>
2020-10-02 12:29:04 +01:00
Thomas Huth
93cc0506f6 tests/docker: Use Fedora containers for MinGW cross-builds in the gitlab-CI
According to our support policy, we do not support Debian 9 in QEMU
anymore, and we only support building the Windows binaries with a
very recent version of the MinGW toolchain. So we should not test
the MinGW cross-compilation with Debian 9 anymore, but switch to
something newer like Fedora. To do this, we need a separate Fedora
container for each build that provides the QEMU_CONFIGURE_OPTS
environment variable.
Unfortunately, the MinGW 64-bit compiler seems to be a little bit
slow, so we also have to disable some features like "capstone" in the
build here to make sure that the CI pipelines still finish within a
reasonable amount of time.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200921174320.46062-2-thuth@redhat.com>
Message-Id: <20200925154027.12672-10-alex.bennee@linaro.org>
2020-10-02 12:29:02 +01:00
Thomas Huth
f4d830c895 travis.yml: Drop the Python 3.5 build
We are soon going to remove the support for Python 3.5. So remove
the CI job now.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200922070441.48844-1-thuth@redhat.com>
Message-Id: <20200925154027.12672-9-alex.bennee@linaro.org>
2020-10-02 12:28:59 +01:00
Thomas Huth
2ef1d93848 travis.yml: Drop the superfluous Python 3.6 build
Python 3.6 is already the default Python in the jobs that are based
on Ubuntu Bionic, so it does not make much sense to test this again
separately.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200918103430.297167-7-thuth@redhat.com>
Message-Id: <20200925154027.12672-8-alex.bennee@linaro.org>
2020-10-02 12:28:57 +01:00
Thomas Huth
e769905e4c travis.yml: Update Travis to use Bionic and Focal instead of Xenial
According to our support policy, we do not support Xenial anymore.
Time to switch the bigger parts of the builds to Focal instead.
Some few jobs have to be updated to Bionic instead, since they are
currently still failing on Focal otherwise. Also "--disable-pie" is
causing linker problems with newer versions of Ubuntu ... so remove
that switch from the jobs now (we still test it in a gitlab CI job,
so we don't lose much test coverage here).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200918103430.297167-6-thuth@redhat.com>
Message-Id: <20200925154027.12672-7-alex.bennee@linaro.org>
2020-10-02 12:28:55 +01:00
Thomas Huth
51f9206d07 travis.yml: Drop the default softmmu builds
The total runtime of all Travis jobs is very long and we are testing
all softmmu targets in the gitlab-CI already - so we can speed up the
Travis testing a little bit by not testing the softmmu targets here
anymore.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200918103430.297167-5-thuth@redhat.com>
Message-Id: <20200925154027.12672-6-alex.bennee@linaro.org>
2020-10-02 12:28:52 +01:00
Thomas Huth
043c2c1a5d migration: Silence compiler warning in global_state_store_running()
GCC 9.3.0 on Ubuntu complains:

In file included from /usr/include/string.h:495,
                 from /home/travis/build/huth/qemu/include/qemu/osdep.h:87,
                 from ../migration/global_state.c:13:
In function ‘strncpy’,
    inlined from ‘global_state_store_running’ at ../migration/global_state.c:47:5:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: error:
 ‘__builtin_strncpy’ specified bound 100 equals destination size [-Werror=stringop-truncation]
  106 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

... but we apparently really want to do a strncpy here - the size is already
checked with the assert() statement right in front of it. To silence the
warning, simply replace it with our strpadcpy() function.

Suggested-by: Philippe Mathieu-Daudé <philmd@redhat.com> (two years ago)
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200918103430.297167-4-thuth@redhat.com>
Message-Id: <20200925154027.12672-5-alex.bennee@linaro.org>
2020-10-02 12:28:48 +01:00
Peter Maydell
b5ce42f5d1 Pull request
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Merge remote-tracking branch 'remotes/jsnow-gitlab/tags/ide-pull-request' into staging

Pull request

# gpg: Signature made Thu 01 Oct 2020 18:41:05 BST
# gpg:                using RSA key F9B7ABDBBCACDF95BE76CBD07DEF8106AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" [full]
# Primary key fingerprint: FAEB 9711 A12C F475 812F  18F2 88A9 064D 1835 61EB
#      Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76  CBD0 7DEF 8106 AAFC 390E

* remotes/jsnow-gitlab/tags/ide-pull-request:
  ide: cancel pending callbacks on SRST
  ide: clear interrupt on command write
  ide: remove magic constants from the device register
  ide: reorder set/get sector functions
  ide: model HOB correctly
  ide: don't tamper with the device register
  ide: rename cmd_write to ctrl_write
  hw/ide/ahci: Do not dma_memory_unmap(NULL)
  MAINTAINERS: Update my git address

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 19:55:10 +01:00
John Snow
55adb3c456 ide: cancel pending callbacks on SRST
The SRST implementation did not keep up with the rest of IDE; it is
possible to perform a weak reset on an IDE device to remove the BSY/DRQ
bits, and then issue writes to the control/device registers which can
cause chaos with the state machine.

Fix that by actually performing a real reset.

Reported-by: Alexander Bulekov <alxndr@bu.edu>
Fixes: https://bugs.launchpad.net/qemu/+bug/1878253
Fixes: https://bugs.launchpad.net/qemu/+bug/1887303
Fixes: https://bugs.launchpad.net/qemu/+bug/1887309
Signed-off-by: John Snow <jsnow@redhat.com>
2020-10-01 13:04:16 -04:00
John Snow
6f52e69f46 ide: clear interrupt on command write
Not known to fix any bug, but I couldn't help but notice that ATA
specifies that writing to this register should clear an interrupt.

ATA7: Section 5.3.3 (Command register - Effect)
ATA6: Section 7.4.4 (Command register - Effect)
ATA5: Section 7.4.4 (Command register - Effect)
ATA4: Section 7.4.4 (Command register - Effect)
ATA3: Section 5.2.2 (Command register)

Other editions: try searching for the phrase "Writing this register".

Signed-off-by: John Snow <jsnow@redhat.com>
2020-10-01 13:04:16 -04:00
John Snow
0c7515e1c4 ide: remove magic constants from the device register
(In QEMU, we call this the "select" register.)

My memory isn't good enough to memorize what these magic runes
do. Label them to prevent mixups from happening in the future.

Side note: I assume it's safe to always set 0xA0 even though ATA2 claims
these bits are reserved, because ATA3 immediately reinstated that these
bits should be always on. ATA4 and subsequent specs only claim that the
fields are obsolete, so I assume it's safe to leave these set and that
it should work with the widest array of guests.

Signed-off-by: John Snow <jsnow@redhat.com>
2020-10-01 13:04:16 -04:00
John Snow
14ee9b53ad ide: reorder set/get sector functions
Reorder these just a pinch to make them more obvious at a glance what
the addressing mode is.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-10-01 13:04:16 -04:00
John Snow
be8c9423de ide: model HOB correctly
I have been staring at this FIXME for years and I never knew what it
meant. I finally stumbled across it!

When writing to the command registers, the old value is shifted into a
HOB copy of the register and the new value is written into the primary
register. When reading registers, the value retrieved is dependent on
the HOB bit in the CONTROL register.

By setting bit 7 (0x80) in CONTROL, any register read will, if it has
one, yield the HOB value for that register instead.

Our code has a problem: We were using bit 7 of the DEVICE register to
model this. We use bus->cmd roughly as the control register already, as
it stores the value from ide_ctrl_write.

Lastly, all command register writes reset the HOB, so fix that, too.

Signed-off-by: John Snow <jsnow@redhat.com>
2020-10-01 13:04:16 -04:00
John Snow
f14bc040b0 ide: don't tamper with the device register
In real ISA operation, register writes go out to an entire bus channel
and all listening devices receive the write. The devices do not toggle
the DEV bit based on their own configuration, nor does the HBA
intermediate or tamper with that value.

The reality of the matter is that DEV0/DEV1 accordingly will react to
command register writes based on whether or not the device was selected.

This does not fix a known bug, but it makes the code slightly simpler
and more obvious.

Signed-off-by: John Snow <jsnow@redhat.com>
2020-10-01 13:04:16 -04:00
John Snow
98d9891223 ide: rename cmd_write to ctrl_write
It's the Control register, part of the Control block -- Command is
misleading here. Rename all related functions and constants.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-10-01 13:04:16 -04:00
Philippe Mathieu-Daudé
1d1c4bdb73 hw/ide/ahci: Do not dma_memory_unmap(NULL)
libFuzzer triggered the following assertion:

  cat << EOF | qemu-system-i386 -M pc-q35-5.0 \
    -nographic -monitor none -serial none -qtest stdio
  outl 0xcf8 0x8000fa24
  outl 0xcfc 0xe1068000
  outl 0xcf8 0x8000fa04
  outw 0xcfc 0x7
  outl 0xcf8 0x8000fb20
  write 0xe1068304 0x1 0x21
  write 0xe1068318 0x1 0x21
  write 0xe1068384 0x1 0x21
  write 0xe1068398 0x2 0x21
  EOF
  qemu-system-i386: exec.c:3621: address_space_unmap: Assertion `mr != NULL' failed.
  Aborted (core dumped)

This is because we don't check the return value from dma_memory_map()
which can return NULL, then we call dma_memory_unmap(NULL) which is
illegal. Fix by only unmap if the value is not NULL (and the size is
not the expected one).

Cc: qemu-stable@nongnu.org
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200718072854.7001-1-f4bug@amsat.org
Fixes: f6ad2e32f8 ("ahci: add ahci emulation")
BugLink: https://bugs.launchpad.net/qemu/+bug/1884693
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
2020-10-01 13:04:16 -04:00
John Snow
77582e2c9d MAINTAINERS: Update my git address
I am switching from github to gitlab.

Signed-off-by: John Snow <jsnow@redhat.com>
2020-10-01 13:04:16 -04:00
Peter Maydell
625581c260 target-arm queue:
* Make isar_feature_aa32_fp16_arith() handle M-profile
  * Fix SVE splice
  * Fix SVE LDR/STR
  * Remove ignore_memory_transaction_failures on the raspi2
  * raspi: Various cleanup/refactoring
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20201001' into staging

target-arm queue:
 * Make isar_feature_aa32_fp16_arith() handle M-profile
 * Fix SVE splice
 * Fix SVE LDR/STR
 * Remove ignore_memory_transaction_failures on the raspi2
 * raspi: Various cleanup/refactoring

# gpg: Signature made Thu 01 Oct 2020 15:46:47 BST
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20201001:
  hw/arm/raspi: Remove use of the 'version' value in the board code
  hw/arm/raspi: Use RaspiProcessorId to set the firmware load address
  hw/arm/raspi: Introduce RaspiProcessorId enum
  hw/arm/raspi: Use more specific machine names
  hw/arm/raspi: Avoid using TypeInfo::class_data pointer
  hw/arm/raspi: Move arm_boot_info structure to RaspiMachineState
  hw/arm/raspi: Load the firmware on the first core
  hw/arm/raspi: Display the board revision in the machine description
  hw/arm/raspi: Remove ignore_memory_transaction_failures on the raspi2
  hw/arm/bcm2835: Add more unimplemented peripherals
  hw/arm/raspi: Define various blocks base addresses
  target/arm: Fix SVE splice
  target/arm: Fix sve ldr/str
  target/arm: Make isar_feature_aa32_fp16_arith() handle M-profile
  target/arm: Add ID register values for Cortex-M0
  hw/intc/armv7m_nvic: Only show ID register values for Main Extension CPUs
  target/arm: Move id_pfr0, id_pfr1 into ARMISARegisters
  target/arm: Replace ARM_FEATURE_PXN with ID_MMFR0.VMSA check

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 16:41:30 +01:00
Philippe Mathieu-Daudé
cdfaa57dcb hw/arm/raspi: Remove use of the 'version' value in the board code
We expected the 'version' ID to match the board processor ID,
but this is not always true (for example boards with revision
id 0xa02042/0xa22042 are Raspberry Pi 2 with a BCM2837 SoC).
This was not important because we were not modelling them, but
since the recent refactor now allow to model these boards, it
is safer to check the processor id directly. Remove the version
check.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-9-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
1af702690e hw/arm/raspi: Use RaspiProcessorId to set the firmware load address
The firmware load address depends on the SoC ("processor id") used,
not on the version of the board.

Suggested-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-8-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
696788d6a9 hw/arm/raspi: Introduce RaspiProcessorId enum
As we only support a reduced set of the REV_CODE_PROCESSOR id
encoded in the board revision, define the PROCESSOR_ID values
as an enum. We can simplify the board_soc_type and cores_count
methods.

Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-7-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
aa35ec2213 hw/arm/raspi: Use more specific machine names
Now that we can instantiate different machines based on their
board_rev register value, we can have various raspi2 and raspi3.

In commit fc78a990ec we corrected the machine description.
Correct the machine names too. For backward compatibility, add
an alias to the previous generic name.

Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-6-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
f0eeb4b615 hw/arm/raspi: Avoid using TypeInfo::class_data pointer
Using class_data pointer to create a MachineClass is not
the recommended way anymore. The correct way is to open-code
the MachineClass::fields in the class_init() method.

We can not use TYPE_RASPI_MACHINE::class_base_init() because
it is called *before* each machine class_init(), therefore the
board_rev field is not populated. We have to manually call
raspi_machine_class_common_init() for each machine.

This partly reverts commit a03bde3674.

Suggested-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-5-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
0f15c6e338 hw/arm/raspi: Move arm_boot_info structure to RaspiMachineState
The arm_boot_info structure belong to the machine,
move it to RaspiMachineState.

Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-4-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
02058e4b40 hw/arm/raspi: Load the firmware on the first core
The 'first_cpu' is more a QEMU accelerator-related concept
than a variable the machine requires to use.
Since the machine is aware of its CPUs, directly use the
first one to load the firmware.

Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-3-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
62f06f7137 hw/arm/raspi: Display the board revision in the machine description
Display the board revision in the machine description.

Before:

  $ qemu-system-aarch64 -M help | fgrep raspi
  raspi2               Raspberry Pi 2B
  raspi3               Raspberry Pi 3B

After:

  raspi2               Raspberry Pi 2B (revision 1.1)
  raspi3               Raspberry Pi 3B (revision 1.2)

Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200924111808.77168-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:01 +01:00
Philippe Mathieu-Daudé
e79f01f3ae hw/arm/raspi: Remove ignore_memory_transaction_failures on the raspi2
Commit 1c3db49d39 added the raspi3, which uses the same peripherals
than the raspi2 (but with different ARM cores). The raspi3 was
introduced without the ignore_memory_transaction_failures flag.
Almost 2 years later, the machine is usable running U-Boot and
Linux.
In commit 00cbd5bd74 we mapped a lot of unimplemented devices,
commit d442d95f added thermal block and commit 0e5bbd7406 the
system timer.
As we are happy with the raspi3, let's remove this flag on the
raspi2.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200921034729.432931-4-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:00 +01:00
Philippe Mathieu-Daudé
8c1e992790 hw/arm/bcm2835: Add more unimplemented peripherals
The bcm2835-v3d is used since Linux 4.7, see commit
49ac67e0c39c ("ARM: bcm2835: Add VC4 to the device tree"),
and the bcm2835-txp since Linux 4.19, see commit
b7dd29b401f5 ("ARM: dts: bcm283x: Add Transposer block").

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20200921034729.432931-3-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:00 +01:00
Philippe Mathieu-Daudé
d8e53d7b2d hw/arm/raspi: Define various blocks base addresses
The Raspberry firmware is closed-source. While running it, it
accesses various I/O registers. Logging these accesses as UNIMP
(unimplemented) help to understand what the firmware is doing
(ideally we want it able to boot a Linux kernel).

Document various blocks we might use later.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20200921034729.432931-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:00 +01:00
Richard Henderson
dd701fafe5 target/arm: Fix SVE splice
While converting to gen_gvec_ool_zzzp, we lost passing
a->esz as the data argument to the function.

Fixes: 36cbb7a8e7
Cc: qemu-stable@nongnu.org
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200918000500.2690937-1-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-01 15:31:00 +01:00