Merge tag 'pull-tcg-20250423' of https://gitlab.com/rth7680/qemu into staging

meson: Introduce top-level libuser_ss and libsystem_ss
meson: Add hw_common_arch dictionary
accel/tcg: Lots of cleanups

Merge tag 'pull-tcg-20250423' of https://gitlab.com/rth7680/qemu into staging

meson: Introduce top-level libuser_ss and libsystem_ss
meson: Add hw_common_arch dictionary
accel/tcg: Lots of cleanups to enable build once for:
user-exec-stub.c,
plugin-gen.c,
translator.c
page-vary: Restrict scope of TARGET_PAGE_BITS_MIN
tcg: Always define TARGET_INSN_START_EXTRA_WORDS
tcg: Convert TARGET_GUEST_DEFAULT_MO to TCGCPUOps::guest_default_memory_order
tcg: Convert TARGET_SUPPORTS_MTTCG to TCGCPUOps::mttcg_supported field
target/riscv: Do not expose rv128 CPU on user mode emulation

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# gpg: Signature made Wed 23 Apr 2025 20:48:05 EDT
# 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

* tag 'pull-tcg-20250423' of https://gitlab.com/rth7680/qemu: (148 commits)
tcg: Convert TARGET_SUPPORTS_MTTCG to TCGCPUOps::mttcg_supported field
target/i386: Remove AccelCPUClass::cpu_class_init need
target/riscv: Remove AccelCPUClass::cpu_class_init need
accel/tcg: Move mttcg warning to tcg_init_machine
tcg: Convert TCGState::mttcg_enabled to TriState
accel/tcg: Remove mttcg_enabled
tcg: Move qemu_tcg_mttcg_enabled() to 'system/tcg.h'
tcg: Pass max_threads not max_cpus to tcg_init
tcg: Move cpu_req_mo() macro to target-agnostic 'backend-ldst.h'
tcg: Remove the TCG_GUEST_DEFAULT_MO definition globally
tcg: Have tcg_req_mo() use TCGCPUOps::guest_default_memory_order
tcg: Propagate CPUState argument to cpu_req_mo()
tcg: Remove use of TCG_GUEST_DEFAULT_MO in tb_gen_code()
tcg: Define guest_default_memory_order in TCGCPUOps
tcg: Simplify tcg_req_mo() macro
tcg: Always define TCG_GUEST_DEFAULT_MO
exec: Do not include 'accel/tcg/cpu-ldst.h' in 'exec-all.h'
exec: Restrict 'cpu_ldst.h' to accel/tcg/
exec: Restrict 'cpu-ldst-common.h' to accel/tcg/
tcg: Always define TARGET_INSN_START_EXTRA_WORDS
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

include/system: Move exec/memory.h to system/memory.h

Convert the existing includes with

sed -i ,exec/memory.h,system/memory.h,g

Move the include within cpu-all.h into a !CONFIG_USER_ONLY block.

include/system: Move exec/memory.h to system/memory.h

Convert the existing includes with

sed -i ,exec/memory.h,system/memory.h,g

Move the include within cpu-all.h into a !CONFIG_USER_ONLY block.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

Merge tag 'exec-20241220' of https://github.com/philmd/qemu into staging

Accel & Exec patch queue

- Ignore writes to CNTP_CTL_EL0 on HVF ARM (Alexander)
- Add '-d invalid_mem' logging option (Zolta

Merge tag 'exec-20241220' of https://github.com/philmd/qemu into staging

Accel & Exec patch queue

- Ignore writes to CNTP_CTL_EL0 on HVF ARM (Alexander)
- Add '-d invalid_mem' logging option (Zoltan)
- Create QOM containers explicitly (Peter)
- Rename sysemu/ -> system/ (Philippe)
- Re-orderning of include/exec/ headers (Philippe)
Move a lot of declarations from these legacy mixed bag headers:
. "exec/cpu-all.h"
. "exec/cpu-common.h"
. "exec/cpu-defs.h"
. "exec/exec-all.h"
. "exec/translate-all"
to these more specific ones:
. "exec/page-protection.h"
. "exec/translation-block.h"
. "user/cpu_loop.h"
. "user/guest-host.h"
. "user/page-protection.h"

# -----BEGIN PGP SIGNATURE-----
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# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 20 Dec 2024 11:45:20 EST
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [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: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE

* tag 'exec-20241220' of https://github.com/philmd/qemu: (59 commits)
util/qemu-timer: fix indentation
meson: Do not define CONFIG_DEVICES on user emulation
system/accel-ops: Remove unnecessary 'exec/cpu-common.h' header
system/numa: Remove unnecessary 'exec/cpu-common.h' header
hw/xen: Remove unnecessary 'exec/cpu-common.h' header
target/mips: Drop left-over comment about Jazz machine
target/mips: Remove tswap() calls in semihosting uhi_fstat_cb()
target/xtensa: Remove tswap() calls in semihosting simcall() helper
accel/tcg: Un-inline translator_is_same_page()
accel/tcg: Include missing 'exec/translation-block.h' header
accel/tcg: Move tcg_cflags_has/set() to 'exec/translation-block.h'
accel/tcg: Restrict curr_cflags() declaration to 'internal-common.h'
qemu/coroutine: Include missing 'qemu/atomic.h' header
exec/translation-block: Include missing 'qemu/atomic.h' header
accel/tcg: Declare cpu_loop_exit_requested() in 'exec/cpu-common.h'
exec/cpu-all: Include 'cpu.h' earlier so MMU_USER_IDX is always defined
target/sparc: Move sparc_restore_state_to_opc() to cpu.c
target/sparc: Uninline cpu_get_tb_cpu_state()
target/loongarch: Declare loongarch_cpu_dump_state() locally
user: Move various declarations out of 'exec/exec-all.h'
...

Conflicts:
hw/char/riscv_htif.c
hw/intc/riscv_aplic.c
target/s390x/cpu.c

Apply sysemu header path changes to not in the pull request.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

include: Rename sysemu/ -> system/

Headers in include/sysemu/ are not only related to system
*emulation*, they are also used by virtualization. Rename
as system/ which is clearer.

Files renamed man

include: Rename sysemu/ -> system/

Headers in include/sysemu/ are not only related to system
*emulation*, they are also used by virtualization. Rename
as system/ which is clearer.

Files renamed manually then mechanical change using sed tool.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Lei Yang <leiyang@redhat.com>
Message-Id: <20241203172445.28576-1-philmd@linaro.org>

show more ...

Merge tag 'qemu-macppc-20240918' of https://github.com/mcayland/qemu into staging

DMA fix for macio IDE device

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'qemu-macppc-20240918' of https://github.com/mcayland/qemu into staging

DMA fix for macio IDE device

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# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 18 Sep 2024 10:43:38 BST
# gpg: using RSA key CC621AB98E82200D915CC9C45BC2C56FAE0F321F
# gpg: issuer "mark.cave-ayland@ilande.co.uk"
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>" [full]
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C C9C4 5BC2 C56F AE0F 321F

* tag 'qemu-macppc-20240918' of https://github.com/mcayland/qemu:
mac_dbdma: Remove leftover `dma_memory_unmap` calls

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

show more ...

mac_dbdma: Remove leftover `dma_memory_unmap` calls

These were passing a NULL buffer pointer unconditionally, which happens
to behave in a mostly benign way (except for the chance of an excess
memor

mac_dbdma: Remove leftover `dma_memory_unmap` calls

These were passing a NULL buffer pointer unconditionally, which happens
to behave in a mostly benign way (except for the chance of an excess
memory region unref and a bounce buffer leak). Per the function comment,
this was never meant to be accepted though, and triggers an assertion
with the "softmmu: Support concurrent bounce buffers" change.

Given that the code in question never sets up any mappings, just remove
the unnecessary dma_memory_unmap calls along with the DBDMA_io struct
fields that are now entirely unused.

Signed-off-by: Mattias Nissler <mnissler@rivosinc.com>
Message-Id: <20240916175708.1829059-1-mnissler@rivosinc.com>
Fixes: be1e343995 ("macio: switch over to new byte-aligned DMA helpers")
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

show more ...

Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging

QOM queue, 2020-09-18

Fixes:
* Error value corrections (Markus Armbruster)
* Correct object_class_dynamic

Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging

QOM queue, 2020-09-18

Fixes:
* Error value corrections (Markus Armbruster)
* Correct object_class_dynamic_cast_assert() documentation (Eduardo Habkost)
* Ensure objects using QEMU_ALIGNED are properly aligned (Richard Henderson)

QOM cleanups (Eduardo Habkost):
* Rename some constants
* Simplify parameters of OBJECT_DECLARE* macros
* Additional DECLARE_*CHECKER* usage
* Additional OBJECT_DECLARE_TYPE usage
* Additional OBJECT_DECLARE_SIMPLE_TYPE usage

# gpg: Signature made Fri 18 Sep 2020 21:45:29 BST
# gpg: using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg: issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/machine-next-pull-request:
Use OBJECT_DECLARE_SIMPLE_TYPE when possible
Use OBJECT_DECLARE_TYPE when possible
qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros
qom: Remove ParentClassType argument from OBJECT_DECLARE_SIMPLE_TYPE
scripts/codeconverter: Update to latest version
target/s390x: Set instance_align on S390CPU TypeInfo
target/riscv: Set instance_align on RISCVCPU TypeInfo
target/ppc: Set instance_align on PowerPCCPU TypeInfo
target/arm: Set instance_align on CPUARM TypeInfo
qom: Allow objects to be allocated with increased alignment
qom: Correct error values in two contracts
qom: Clean up object_property_get_enum()'s error value
qom: Correct object_class_dynamic_cast_assert() documentation
sifive: Use DECLARE_*CHECKER* macros
sifive: Move QOM typedefs and add missing includes
sifive_u: Rename memmap enum constants
sifive_e: Rename memmap enum constants

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

show more ...

Use OBJECT_DECLARE_SIMPLE_TYPE when possible

This converts existing DECLARE_INSTANCE_CHECKER usage to
OBJECT_DECLARE_SIMPLE_TYPE when possible.

$ ./scripts/codeconverter/converter.py -i \
--patte

Use OBJECT_DECLARE_SIMPLE_TYPE when possible

This converts existing DECLARE_INSTANCE_CHECKER usage to
OBJECT_DECLARE_SIMPLE_TYPE when possible.

$ ./scripts/codeconverter/converter.py -i \
--pattern=AddObjectDeclareSimpleType $(git grep -l '' -- '*.[ch]')

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Paul Durrant <paul@xen.org>
Message-Id: <20200916182519.415636-6-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging

QOM boilerplate cleanup

Documentation build fix:
* memory: Remove kernel-doc comment marker (Eduardo Habk

Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging

QOM boilerplate cleanup

Documentation build fix:
* memory: Remove kernel-doc comment marker (Eduardo Habkost)

QOM cleanups:
* Rename QOM macros for consistency between
TYPE_* and type checking constants (Eduardo Habkost)

QOM new macros:
* OBJECT_DECLARE_* and OBJECT_DEFINE_* macros (Daniel P. Berrangé)
* DECLARE_*_CHECKER macros (Eduardo Habkost)

Automated QOM boilerplate changes:
* Automated changes to use DECLARE_*_CHECKER (Eduardo Habkost
* Automated changes to use OBJECT_DECLARE* (Eduardo Habkost)

# gpg: Signature made Thu 10 Sep 2020 19:17:49 BST
# gpg: using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg: issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/machine-next-pull-request: (33 commits)
virtio-vga: Use typedef name for instance_size
vhost-user-vga: Use typedef name for instance_size
xilinx_axienet: Use typedef name for instance_size
lpc_ich9: Use typedef name for instance_size
omap_intc: Use typedef name for instance_size
xilinx_axidma: Use typedef name for instance_size
tusb6010: Rename TUSB to TUSB6010
pc87312: Rename TYPE_PC87312_SUPERIO to TYPE_PC87312
vfio: Rename PCI_VFIO to VFIO_PCI
usb: Rename USB_SERIAL_DEV to USB_SERIAL
sabre: Rename SABRE_DEVICE to SABRE
rs6000_mc: Rename RS6000MC_DEVICE to RS6000MC
filter-rewriter: Rename FILTER_COLO_REWRITER to FILTER_REWRITER
esp: Rename ESP_STATE to ESP
ahci: Rename ICH_AHCI to ICH9_AHCI
vmgenid: Rename VMGENID_DEVICE to TYPE_VMGENID
vfio: Rename VFIO_AP_DEVICE_TYPE to TYPE_VFIO_AP_DEVICE
dev-smartcard-reader: Rename CCID_DEV_NAME to TYPE_USB_CCID_DEV
ap-device: Rename AP_DEVICE_TYPE to TYPE_AP_DEVICE
gpex: Fix type checking function name
...

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

show more ...

Use DECLARE_*CHECKER* macros

Generated using:

$ ./scripts/codeconverter/converter.py -i \
--pattern=TypeCheckMacro $(git grep -l '' -- '*.[ch]')

Reviewed-by: Daniel P. Berrangé <berrange@redha

Use DECLARE_*CHECKER* macros

Generated using:

$ ./scripts/codeconverter/converter.py -i \
--pattern=TypeCheckMacro $(git grep -l '' -- '*.[ch]')

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-12-ehabkost@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-13-ehabkost@redhat.com>
Message-Id: <20200831210740.126168-14-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

show more ...

Move QOM typedefs and add missing includes

Some typedefs and macros are defined after the type check macros.
This makes it difficult to automatically replace their
definitions with OBJECT_DECLARE_TY

Move QOM typedefs and add missing includes

Some typedefs and macros are defined after the type check macros.
This makes it difficult to automatically replace their
definitions with OBJECT_DECLARE_TYPE.

Patch generated using:

$ ./scripts/codeconverter/converter.py -i \
--pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]')

which will split "typdef struct { ... } TypedefName"
declarations.

Followed by:

$ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \
$(git grep -l '' -- '*.[ch]')

which will:
- move the typedefs and #defines above the type check macros
- add missing #include "qom/object.h" lines if necessary

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-9-ehabkost@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-10-ehabkost@redhat.com>
Message-Id: <20200831210740.126168-11-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20170927' into staging

ppc patch queue 2017-09-27

Contains
* a number of Mac machine type fixes
* a number of embedded machine type

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20170927' into staging

ppc patch queue 2017-09-27

Contains
* a number of Mac machine type fixes
* a number of embedded machine type fixes (preliminary to adding the
Sam460ex board)
* a important fix for handling of migration with KVM PR
* assorted other minor fixes and cleanups

# gpg: Signature made Wed 27 Sep 2017 08:40:48 BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.11-20170927: (26 commits)
macio: use object link between MACIO_IDE and MAC_DBDMA object
macio: pass channel into MACIOIDEState via qdev property
mac_dbdma: remove DBDMA_init() function
mac_dbdma: QOMify
mac_dbdma: remove unused IO fields from DBDMAState
spapr: fix the value of SDR1 in kvmppc_put_books_sregs()
ppc/pnv: check for OPAL firmware file presence
ppc: remove all unused CPU definitions
ppc: remove unused CPU definitions
spapr_pci: make index property mandatory
macio: convert pmac_ide_ops from old_mmio
ppc/pnv: Improve macro parenthesization
spapr: introduce helpers to migrate HPT chunks and the end marker
ppc/kvm: generalize the use of kvmppc_get_htab_fd()
ppc/kvm: change kvmppc_get_htab_fd() to return -errno on error
ppc: Fix OpenPIC model
ppc/ide/macio: Add missing registers
ppc/mac: More rework of the DBDMA emulation
ppc/mac: Advertise a high clock frequency for NewWorld Macs
ppc: QOMify g3beige machine
...

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

show more ...

mac_dbdma: remove DBDMA_init() function

Instead we can now instantiate the MAC_DBDMA object directly within the
macio device. We also add the DBDMA device as a child property so that
it is possible

mac_dbdma: remove DBDMA_init() function

Instead we can now instantiate the MAC_DBDMA object directly within the
macio device. We also add the DBDMA device as a child property so that
it is possible to retrieve later.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

show more ...

mac_dbdma: QOMify

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

mac_dbdma: remove unused IO fields from DBDMAState

These fields were used to manually handle IO requests that weren't aligned
to a sector boundary before this feature was supported by the block API.

mac_dbdma: remove unused IO fields from DBDMAState

These fields were used to manually handle IO requests that weren't aligned
to a sector boundary before this feature was supported by the block API.

Once the block API changed to support byte-aligned IO requests, the macio
controller was switched over to use it in commit be1e343 but these fields
were accidentally left behind. Remove them, including the initialisation
in DBDMA_init().

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

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Clean up decorations and whitespace around header guards

Cleaned up with scripts/clean-header-guards.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twi

Clean up decorations and whitespace around header guards

Cleaned up with scripts/clean-header-guards.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>

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macio: call dma_memory_unmap() at the end of each DMA transfer

This ensures that the underlying memory is marked dirty once the transfer
is complete and resolves cache coherency problems under MacOS

macio: call dma_memory_unmap() at the end of each DMA transfer

This ensures that the underlying memory is marked dirty once the transfer
is complete and resolves cache coherency problems under MacOS 9.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

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include/qemu/iov.h: Don't include qemu-common.h

qemu-common.h should only be included by .c files. Its file comment
explains why: "No header file should depend on qemu-common.h, as this
would easil

include/qemu/iov.h: Don't include qemu-common.h

qemu-common.h should only be included by .c files. Its file comment
explains why: "No header file should depend on qemu-common.h, as this
would easily lead to circular header dependencies."

qemu/iov.h includes qemu-common.h for QEMUIOVector stuff. Move all
that to qemu/iov.h and drop the ill-advised include. Include
qemu/iov.h where the QEMUIOVector stuff is now missing.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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macio: remove remainder_len DBDMA_io property

Since the block alignment code is now effectively independent of the DMA
implementation, this variable is no longer required and can be removed.

Signed

macio: remove remainder_len DBDMA_io property

Since the block alignment code is now effectively independent of the DMA
implementation, this variable is no longer required and can be removed.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1433455177-21243-5-git-send-email-mark.cave-ayland@ilande.co.uk
Signed-off-by: John Snow <jsnow@redhat.com>

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macio: switch pmac_dma_write() over to new offset/len implementation

In particular, this fixes a bug whereby chains of overlapping head/tail chains
would incorrectly write over each other's remainde

macio: switch pmac_dma_write() over to new offset/len implementation

In particular, this fixes a bug whereby chains of overlapping head/tail chains
would incorrectly write over each other's remainder cache. This is the access
pattern used by OS X/Darwin and fixes an issue with a corrupt Darwin
installation in my local tests.

While we are here, rename the DBDMA_io struct property remainder to
head_remainder for clarification.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1433455177-21243-3-git-send-email-mark.cave-ayland@ilande.co.uk
Signed-off-by: John Snow <jsnow@redhat.com>

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macio: move unaligned DMA write code into separate pmac_dma_write() function

Similarly switch the macio IDE routines over to use the new function and
tidy-up the remaining code as required.

[Mainta

macio: move unaligned DMA write code into separate pmac_dma_write() function

Similarly switch the macio IDE routines over to use the new function and
tidy-up the remaining code as required.

[Maintainer edit: printf format codes adjusted for 32/64bit. --js]

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: John Snow <jsnow@redhat.com>
Message-id: 1425939893-14404-3-git-send-email-mark.cave-ayland@ilande.co.uk
Signed-off-by: John Snow <jsnow@redhat.com>

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macio ide: Do remainder access asynchronously

The macio IDE controller has some pretty nasty magic in its implementation to
allow for unaligned sector accesses. We used to handle these accesses
sync

macio ide: Do remainder access asynchronously

The macio IDE controller has some pretty nasty magic in its implementation to
allow for unaligned sector accesses. We used to handle these accesses
synchronously inside the IO callback handler.

However, the block infrastructure changed below our feet and now it's impossible
to call a synchronous block read/write from the aio callback handler of a
previous block access.

Work around that limitation by making the unaligned handling bits also go
through our asynchronous handler.

This fixes booting Mac OS X for me.

Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

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PPC: dbdma: Support unaligned DMA access

The DBDMA engine really just reads bytes from a producing device (IDE
in our case) and shoves these bytes into memory. It doesn't care whether
any alignment

PPC: dbdma: Support unaligned DMA access

The DBDMA engine really just reads bytes from a producing device (IDE
in our case) and shoves these bytes into memory. It doesn't care whether
any alignment takes place or not.

Our code today however assumes that block accesses always happen on
sector (512 byte) boundaries. This is a fair assumption for most cases.

However, Mac OS X really likes to do unaligned, incomplete accesses
that it finishes with the next DMA request.

So we need to read / write the unaligned bits independent of the actual
asynchronous request, because that one can only handle 512-byte-aligned
data. We also need to cache these unaligned sectors until the next DMA
request, at which point the data might be successfully flushed from the
pipe.

Signed-off-by: Alexander Graf <agraf@suse.de>

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PPC: dbdma: Move processing to io

Soon we will introduce intermediate processing pauses which will
allow the bottom half to restart a DMA request that couldn't be
fulfilled yet.

For that to work, m

PPC: dbdma: Move processing to io

Soon we will introduce intermediate processing pauses which will
allow the bottom half to restart a DMA request that couldn't be
fulfilled yet.

For that to work, move the processing variable into the io struct
which is what DMA providers work with.

While touching it, also change it into a bool

Signed-off-by: Alexander Graf <agraf@suse.de>

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PPC: dbdma: Move static bh variable to device struct

The DBDMA controller has a bottom half to asynchronously process DMA
request queues.

This bh was stored as a gross static variable. Move it into

PPC: dbdma: Move static bh variable to device struct

The DBDMA controller has a bottom half to asynchronously process DMA
request queues.

This bh was stored as a gross static variable. Move it into the device
struct instead.

While at it, move all users of it to the new generic kick function.

Signed-off-by: Alexander Graf <agraf@suse.de>

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