Instead of just returning 0/-1 and letting the caller make up a
meaningless error message, add an Error parameter to allow reporting the
real error and switch to 0/-errno so that different kind of errors can
be distinguished in the caller.

Specifically, in vhost-user, EPROTO is used for all errors that relate
to the connection itself, whereas other error codes are used for errors
relating to the content of the connection. This will allow us later to
automatically reconnect when the connection goes away, without ending up
in an endless loop if it's a permanent error in the configuration.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210609154658.350308-3-kwolf@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

This allows callers to return better error messages instead of making
one up while the real error ends up on stderr. Most callers can
immediately make use of this because they already have an Error
parameter themselves. The others just keep printing the error with
error_report_err().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210609154658.350308-2-kwolf@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Currently the SSH block driver supports MD5 and SHA1 for host key
fingerprints. This is a cryptographically sensitive operation and
so these hash algorithms are inadequate by modern standards. This
adds support for SHA256 which has been supported in libssh since
the 0.8.1 release.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210622115156.138458-1-berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210628121133.193984-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Introduce a convenient macro, that works for qemu_memalign() like
g_autofree works with g_malloc.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210628121133.193984-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

This patch adds new tests in which we use x-blockdev-reopen to change
bs->file

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210610120537.196183-10-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

When the x-blockdev-reopen was added it allowed reconfiguring the
graph by replacing backing files, but changing the 'file' option was
forbidden. Because of this restriction some operations are not
possible, notably inserting and removing block filters.

This patch adds support for replacing the 'file' option. This is
similar to replacing the backing file and the user is likewise
responsible for the correctness of the resulting graph, otherwise this
can lead to data corruption.

Signed-off-by: Alberto Garcia <berto@igalia.com>
 [vsementsov: bdrv_reopen_parse_file_or_backing() is modified a lot]
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-9-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

It's used only in bdrv_reopen_commit(). "backing" is covered by the
loop through all children except for case when we removed backing child
during reopen.

Make it more obvious and drop extra boolean field: qdict_del will not
fail if there is no such entry.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-8-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Move supports_backing check of bdrv_reopen_parse_backing to called
(through bdrv_set_backing_noperm()) bdrv_set_file_or_backing_noperm()
function. The check applies to general case, so it's appropriate for
bdrv_set_file_or_backing_noperm().

We have to declare backing support for two test drivers, otherwise new
check fails.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-7-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

The logic around finding overlay here is not obvious. Actually it does
two simple things:

1. If new bs is already in backing chain, split from parent bs by
   several implicit filters we are done, do nothing.

2. Otherwise, don't try to replace implicit filter.

Let's rewrite this in more obvious way.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-6-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

bdrv_set_backing_noperm() takes care of it (actual check is in
bdrv_set_file_or_backing_noperm()), so we don't need to check it here.

While being here, improve error message a bit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-5-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

We don't need this check: bdrv_set_backing_noperm() will do it anyway
(actually in bdrv_attach_child_common()).

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-4-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

To be used for reopen in future commit.

Notes:
 - It seems OK to update inherits_from if new bs is recursively inherits
 from parent bs. Let's just not check for backing_chain_contains, to
 support file child of non-filters.

 - Simply check child->frozen instead of
   bdrv_is_backing_chain_frozen(), as we really interested only in this
   one child.

 - Role determination of new child is a bit more complex: it remains
   the same for backing child, it's obvious for filter driver. But for
   non-filter file child let's for now restrict to only replacing
   existing child (and keeping its role).

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

To be used for reopen in future commit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210610112618.127378-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

We have bdrv_replace_child() wrapper on bdrv_replace_child_noperm().
But bdrv_replace_child() doesn't update permissions. It's rather
strange, as normally it's expected that foo() should call foo_noperm()
and update permissions.

Let's rename and add comment.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210610112618.127378-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

When creating an image file with a backing file, we generally try to
open the backing file (unless -u was specified), mostly to verify that
it is there, but also to get the file size if none was specified for the
new image.

For neither of these things do we need data I/O, and so we can pass
BDRV_O_NO_IO when opening the backing file.  This allows us to open even
encrypted backing images without requiring the user to provide a secret.

This makes the -u switch in iotests 189 and 198 unnecessary (and the
$size parameter), so drop it, because this way we get regression tests
for this patch here.

Fixes: https://gitlab.com/qemu-project/qemu/-/issues/441


Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210622140030.212487-1-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

No need to start a tracked request that will always fail.  The choice
to check read-only after bdrv_inc_in_flight() predates 1bc5f09f
(block: Use tracked request for truncate), but waiting for serializing
requests can make the effect more noticeable.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210609163034.997943-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Commit 3108a15c (block: introduce bdrv_drop_filter()) introduced
uninitialized variable to_cow_parent in bdrv_replace_node_common
function that is used only when detach_subchain is true. It is used in
two places. First if block properly initialize the variable and second
block use it.

However, compiler may treat these two blocks as two independent cases so
it thinks first block can fail test and second one pass (although both
use same condition). This cause warning that variable can be
uninitialized in second block.

The warning was observed with GCC 8.4.1 and 11.0.1.

To prevent this warning, initialize the variable with NULL.

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
Message-Id: <1162368493.17178530.1620201543649.JavaMail.zimbra@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Fixes for NetBSD/alpha:
  - Provide a proper PCI-ISA bridge
  - Set PCI device IDs correctly
  - Pass -nographic flag to PALcode
  - Update PALcode to set up the Console Terminal Block
  - Honor the Floating-point ENable bit during translate.

# gpg: Signature made Mon 28 Jun 2021 15:34:08 BST
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth-gitlab/tags/pull-axp-20210628:
  target/alpha: Honor the FEN bit
  pc-bios: Update the palcode-clipper image
  hw/alpha: Provide a PCI-ISA bridge device node
  hw/alpha: Provide console information to the PALcode at start-up
  hw/alpha: Set minimum PCI device ID to 1 to match Clipper IRQ mappings

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

* Some Meson test conversions
* KVM dirty page ring buffer fix
* KVM TSC scaling support
* Fixes for SG_IO with /dev/sdX devices
* (Non)support for host devices on iOS
* -smp cleanups

# gpg: Signature made Fri 25 Jun 2021 15:16:18 BST
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini-gitlab/tags/for-upstream: (28 commits)
  machine: reject -smp dies!=1 for non-PC machines
  machine: pass QAPI struct to mc->smp_parse
  machine: add error propagation to mc->smp_parse
  machine: move common smp_parse code to caller
  machine: move dies from X86MachineState to CpuTopology
  file-posix: handle EINTR during ioctl
  block: detect DKIOCGETBLOCKCOUNT/SIZE before use
  block: try BSD disk size ioctls one after another
  block: check for sys/disk.h
  block: feature detection for host block support
  file-posix: try BLKSECTGET on block devices too, do not round to power of 2
  block: add max_hw_transfer to BlockLimits
  block-backend: align max_transfer to request alignment
  osdep: provide ROUND_DOWN macro
  scsi-generic: pass max_segments via max_iov field in BlockLimits
  file-posix: fix max_iov for /dev/sg devices
  KVM: Fix dirty ring mmap incorrect size due to renaming accident
  configure, meson: convert libusbredir detection to meson
  configure, meson: convert libcacard detection to meson
  configure, meson: convert libusb detection to meson
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

block: Make block-copy API thread-safe

# gpg: Signature made Fri 25 Jun 2021 13:40:24 BST
# gpg:                using RSA key 8B9C26CDB2FD147C880E86A1561F24C1F19F79FB
# gpg: Good signature from "Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8B9C 26CD B2FD 147C 880E  86A1 561F 24C1 F19F 79FB

* remotes/vsementsov/tags/pull-jobs-2021-06-25:
  block-copy: atomic .cancelled and .finished fields in BlockCopyCallState
  block-copy: add CoMutex lock
  block-copy: move progress_set_remaining in block_copy_task_end
  block-copy: streamline choice of copy_range vs. read/write
  block-copy: small refactor in block_copy_task_entry and block_copy_common
  co-shared-resource: protect with a mutex
  progressmeter: protect with a mutex
  blockjob: let ratelimit handle a speed of 0
  block-copy: let ratelimit handle a speed of 0
  ratelimit: treat zero speed as unlimited

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

This bit is used by NetBSD for lazy fpu migration.

Tested-by: Jason Thorpe <thorpej@me.com>
Reported-by: Jason Thorpe <thorpej@me.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/438


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

Build a new palcode image with Jason Thorpe's patches
to support NetBSD.

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

- Move initialization of the ISA bus from typhoon_init() to clipper_init();
  this apsect of device topology is really associated with the individual
  model, not the core logic chipset.  typhoon_init() now returns the IRQ
  to use for the output of the ISA PIC.

- In clipper_init(), instantiate an i82378 instance, and connect its
  PIC output to the ISA IRQ input provided by typhoon_init().  Remove
  the explicit instantiations of i8254 and i82374, as these devices
  are subsumed by the i82378.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Jason Thorpe <thorpej@me.com>
Message-Id: <20210616141538.25436-1-thorpej@me.com>
[rth: Remove direct dependencies on i82374, i8254, i8259.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Redefine the a2 register passed by Qemu at start-up to also include
some configuration flags, in addition to the CPU count, and define
a flag to mirror the "-nographic" option.

Signed-off-by: Jason Thorpe <thorpej@me.com>
Message-Id: <20210613211549.18094-5-thorpej@me.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Since we are emulating a Clipper device topology, we need to set the
minimum PCI device ID to 1, as there is no IRQ mapping for a device
at ID 0 (see sys_dp264.c:clipper_map_irq()).

- Add a 'devfn_min' argument to typhoon_init().  Pass that argument
  along to pci_register_root_bus().
- In clipper_init(), pass PCI_DEVFN(1, 0) as the minimum PCI device
  ID/function.

Signed-off-by: Jason Thorpe <thorpej@me.com>
Message-Id: <20210613211549.18094-3-thorpej@me.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

FDC Pull request

# gpg: Signature made Fri 25 Jun 2021 13:54:17 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/floppy-pull-request:
  hw/block/fdc: Add description to floppy controllers
  hw/block/fdc: Extract SysBus floppy controllers to fdc-sysbus.c
  hw/block/fdc: Extract ISA floppy controllers to fdc-isa.c
  hw/block/fdc: Declare shared prototypes in fdc-internal.h
  hw/block/fdc: Replace disabled fprintf() by trace event
  hw/isa/Kconfig: Fix missing dependency ISA_SUPERIO -> FDC

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

MIPS patches queue

Various fixes:
- Potential integer overflow (CID 1452921)
- Invalid emulation of nanoMIPS BPOSGE32 opcode
- Missing exception when DINSV opcode used with DSP disabled
- Do not abort but emit exception for invalid BRANCH opcodes
- TCG temporary leaks

Housekeeping:
- Remove dead code / comments
- Restrict few files to TCG, declarations to sysemu
- Merge MSA32 and MSA64 decodetree definitions

# gpg: Signature made Fri 25 Jun 2021 10:22:20 BST
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd/tags/mips-20210625:
  target/mips: Merge msa32/msa64 decodetree definitions
  target/mips: Remove pointless gen_msa()
  target/mips: Optimize regnames[] arrays
  target/mips: Constify host_to_mips_errno[]
  target/mips: fix emulation of nanoMIPS BPOSGE32 instruction
  target/mips: Remove microMIPS BPOSGE32 / BPOSGE64 unuseful cases
  target/mips: Remove SmartMIPS / MDMX unuseful comments
  target/mips: Restrict some system specific declarations to sysemu
  target/mips: Move translate.h to tcg/ sub directory
  target/mips: Move TCG trace events to tcg/ sub directory
  target/mips: Do not abort on invalid instruction
  target/mips: Raise exception when DINSV opcode used with DSP disabled
  target/mips: Fix more TCG temporary leaks in gen_pool32a5_nanomips_insn
  target/mips: Fix TCG temporary leaks in gen_pool32a5_nanomips_insn()
  target/mips: Fix potential integer overflow (CID 1452921)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

audio: bugfixes

# gpg: Signature made Thu 24 Jun 2021 13:16:16 BST
# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/audio-20210624-pull-request:
  hw/audio/sb16: Restrict I/O sampling rate range for command 41h/42h
  coreaudio: Lock only the buffer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Third RISC-V PR for 6.1 release

 - Fix MISA in the DisasContext
 - Fix GDB CSR XML generation
 - QOMify the SiFive UART
 - Add support for the OpenTitan timer

# gpg: Signature made Thu 24 Jun 2021 13:00:26 BST
# gpg:                using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8  CE8F 21E1 0D29 DF97 7054

* remotes/alistair/tags/pull-riscv-to-apply-20210624-2:
  hw/riscv: OpenTitan: Connect the mtime and mtimecmp timer
  hw/timer: Initial commit of Ibex Timer
  hw/char/ibex_uart: Make the register layout private
  hw/char: QOMify sifive_uart
  hw/char: Consistent function names for sifive_uart
  target/riscv: gdbstub: Fix dynamic CSR XML generation
  target/riscv: Use target_ulong for the DisasContext misa

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Block patch:
- Fix Coverity complaint in block/snapshot.c

# gpg: Signature made Thu 24 Jun 2021 12:42:28 BST
# gpg:                using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg:                issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* remotes/maxreitz/tags/pull-block-2021-06-24:
  block/snapshot: Clarify goto fallback behavior

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210617155308.928754-11-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

As part of converting -smp to a property with a QAPI type, define
the struct and use it to do the actual parsing.  machine_smp_parse
takes care of doing the QemuOpts->QAPI conversion by hand, for now.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210617155308.928754-10-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Clean up the smp_parse functions to use Error** instead of exiting.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210617155308.928754-9-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Most of smp_parse and pc_smp_parse is guarded by an "if (opts)"
conditional, and the rest is common to both function.  Move the
conditional and the common code to the caller, machine_smp_parse.

Move the replay_add_blocker call after all errors are checked for.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210617155308.928754-8-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

In order to make SMP configuration a Machine property, we need a getter as
well as a setter.  To simplify the implementation put everything that the
getter needs in the CpuTopology struct.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210617155308.928754-7-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Change the '-device help' output from:

  Storage devices:
  name "floppy", bus floppy-bus, desc "virtual floppy drive"
  name "isa-fdc", bus ISA

to:

  Storage devices:
  name "floppy", bus floppy-bus, desc "virtual floppy drive"
  name "isa-fdc", bus ISA, desc "virtual floppy controller"

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210614193220.2007159-7-philmd@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

Some machines use floppy controllers via the SysBus interface,
and don't need to pull in all the SysBus code.
Extract the SysBus specific code to a new unit: fdc-sysbus.c,
and add a new Kconfig symbol: "FDC_SYSBUS".

Reviewed-by: John Snow <jsnow@redhat.com>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210614193220.2007159-6-philmd@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

Some machines use floppy controllers via the SysBus interface,
and don't need to pull in all the ISA code.
Extract the ISA specific code to a new unit: fdc-isa.c, and
add a new Kconfig symbol: "FDC_ISA".
This allows us to remove the FIXME from commit dd0ff819
("isa: express SuperIO dependencies with Kconfig").

Reviewed-by: John Snow <jsnow@redhat.com>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210614193220.2007159-5-philmd@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>