Recently MemReentrancyGuard was added to DeviceState to record that the
device is engaging in I/O. The network device backend needs to update it
when delivering a packet to a device.
In preparation for such a change, add MemReentrancyGuard * as a
parameter of qemu_new_nic().
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Fixes: c755c943aa "hw/net/cadence_gem: use REG32 macro for register definitions"
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Luc Michel <luc.michel@amd.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The Intel 82576EB GbE Controller say that the Physical and Virtual
Functions support Function Level Reset. Add the capability to the PF
device model using device property "x-pcie-flr-init" which is "on" by
default and "off" for machines <= 8.1 to preserve compatibility.
The FLR capability of the VF model is defined according to the FLR
property of the PF, this to avoid adding an extra compatibility
property.
Cc: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Fixes: 3a977deebe ("Intrdocue igb device emulation")
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Export the igb_vf_reset() helper routine from the PF model to let the
IGBVF model implement its own device reset.
Cc: Akihiko Odaki <akihiko.odaki@daynix.com>
Suggested-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This allows us to use Xen PV networking with emulated Xen guests, and to
add them on the command line or hotplug.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This are the easiest cases, where we were already using
VMSTATE_INSTANCE_ID_ANY.
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231020090731.28701-3-quintela@redhat.com>
The CRC was stored in an unsigned variable in gem_receive. Change it for
a uint32_t to ensure we have the correct variable size here.
Signed-off-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: sai.pavan.boddu@amd.com
Message-id: 20231017194422.4124691-12-luc.michel@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The MDIO access is done only on a write to the PHYMNTNC register. A
subsequent read is used to retrieve the result but does not trigger an
MDIO access by itself.
Refactor the PHY access logic to perform all accesses (MDIO reads and
writes) at PHYMNTNC write time.
Signed-off-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: sai.pavan.boddu@amd.com
Message-id: 20231017194422.4124691-11-luc.michel@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Use the FIELD macro to describe the DESCONF6 register fields.
Signed-off-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20231017194422.4124691-9-luc.michel@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Use de FIELD macro to describe the TXSTATUS and RXSTATUS register
fields.
Signed-off-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: sai.pavan.boddu@amd.com
Message-id: 20231017194422.4124691-7-luc.michel@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Replace register defines with the REG32 macro from registerfields.h in
the Cadence GEM device.
Signed-off-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: sai.pavan.boddu@amd.com
Message-id: 20231017194422.4124691-2-luc.michel@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This series adds a new PA-RISC machine emulation for the HP-PARISC
C3700 workstation.
The physical HP C3700 machine has a PA2.0 (64-bit) CPU, in contrast to
the existing emulation of a B160L workstation which is a 32-bit only
machine and where it's Dino PCI controller isn't 64-bit capable.
With the HP C3700 machine emulation (together with the emulated Astro
Memory controller and the Elroy PCI bridge) it's now possible to
enhance the hppa CPU emulation to support the 64-bit instruction set
in upcoming patches.
Helge
v4 changes:
- Fix testsuite error in astro by adding a realize() implementation
v3 changes:
based on feedback from BALATON Zoltan <balaton@eik.bme.hu>:
- apply paches in different order to bring them logically closer to each other
- update comments in lasips2
- rephrased title and commit message of MAINTAINERS patch
v2 changes:
suggestions by BALATON Zoltan <balaton@eik.bme.hu>:
- merged pci_ids and tulip patch
- dropped comments in lasips2
- mention additional cleanups in patch "Require at least SeaBIOS-hppa version 10"
suggestions by Philippe Mathieu-Daudé <philmd@linaro.org>:
- dropped static pci_bus variable
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Merge tag 'C3700-pull-request' of https://github.com/hdeller/qemu-hppa into staging
target/hppa: Add emulation of a C3700 HP-PARISC workstation
This series adds a new PA-RISC machine emulation for the HP-PARISC
C3700 workstation.
The physical HP C3700 machine has a PA2.0 (64-bit) CPU, in contrast to
the existing emulation of a B160L workstation which is a 32-bit only
machine and where it's Dino PCI controller isn't 64-bit capable.
With the HP C3700 machine emulation (together with the emulated Astro
Memory controller and the Elroy PCI bridge) it's now possible to
enhance the hppa CPU emulation to support the 64-bit instruction set
in upcoming patches.
Helge
v4 changes:
- Fix testsuite error in astro by adding a realize() implementation
v3 changes:
based on feedback from BALATON Zoltan <balaton@eik.bme.hu>:
- apply paches in different order to bring them logically closer to each other
- update comments in lasips2
- rephrased title and commit message of MAINTAINERS patch
v2 changes:
suggestions by BALATON Zoltan <balaton@eik.bme.hu>:
- merged pci_ids and tulip patch
- dropped comments in lasips2
- mention additional cleanups in patch "Require at least SeaBIOS-hppa version 10"
suggestions by Philippe Mathieu-Daudé <philmd@linaro.org>:
- dropped static pci_bus variable
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# gpg: Signature made Thu 19 Oct 2023 15:51:57 PDT
# gpg: using EDDSA key BCE9123E1AD29F07C049BBDEF712B510A23A0F5F
# gpg: Good signature from "Helge Deller <deller@gmx.de>" [unknown]
# gpg: aka "Helge Deller <deller@kernel.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.
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* tag 'C3700-pull-request' of https://github.com/hdeller/qemu-hppa:
hw/hppa: Add new HP C3700 machine
hw/hppa: Split out machine creation
hw/hppa: Provide RTC and DebugOutputPort on CPU #0
hw/hppa: Export machine name, BTLBs, power-button address via fw_cfg
MAINTAINERS: Update HP-PARISC entries
pci-host: Wire up new Astro/Elroy PCI bridge
hw/pci-host: Add Astro system bus adapter found on PA-RISC machines
lasips2: LASI PS/2 devices are not user-createable
pci_ids/tulip: Add PCI vendor ID for HP and use it in tulip
hw/hppa: Require at least SeaBIOS-hppa version 10
target/hppa: Update to SeaBIOS-hppa version 10
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Pass the callback function to add_migration_state_change_notifier so
that migration can initialize the notifier on add and clear it on
delete, which simplifies the call sites. Shorten the function names
so the extra arg can be added more legibly. Hide the global notifier
list in a new function migration_call_notifiers, and make it externally
visible so future live update code can call it.
No functional change.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Tested-by: Michael Galaxy <mgalaxy@akamai.com>
Reviewed-by: Michael Galaxy <mgalaxy@akamai.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <1686148954-250144-1-git-send-email-steven.sistare@oracle.com>
Declare link statically using DEFINE_PROP_LINK().
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20231017140150.44995-7-philmd@linaro.org>
Rename the innermost local variables to avoid compiler warnings
with "-Wshadow".
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231004084939.96349-1-thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
vdpa:
shadow vq vlan support
net migration with cvq
cxl:
support emulating 4 HDM decoders
serial number extended capability
virtio:
hared dma-buf
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging
virtio,pci: features, cleanups
vdpa:
shadow vq vlan support
net migration with cvq
cxl:
support emulating 4 HDM decoders
serial number extended capability
virtio:
hared dma-buf
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (53 commits)
libvhost-user: handle shared_object msg
vhost-user: add shared_object msg
hw/display: introduce virtio-dmabuf
util/uuid: add a hash function
virtio: remove unused next argument from virtqueue_split_read_next_desc()
virtio: remove unnecessary thread fence while reading next descriptor
virtio: use shadow_avail_idx while checking number of heads
libvhost-user.c: add assertion to vu_message_read_default
pcie_sriov: unregister_vfs(): fix error path
hw/i386/pc: improve physical address space bound check for 32-bit x86 systems
amd_iommu: Fix APIC address check
vdpa net: follow VirtIO initialization properly at cvq isolation probing
vdpa net: stop probing if cannot set features
vdpa net: fix error message setting virtio status
hw/pci-bridge/cxl-upstream: Add serial number extended capability support
hw/cxl: Support 4 HDM decoders at all levels of topology
hw/cxl: Fix and use same calculation for HDM decoder block size everywhere
hw/cxl: Add utility functions decoder interleave ways and target count.
hw/cxl: Push cxl_decoder_count_enc() and cxl_decode_ig() into .c
vdpa net: zero vhost_vdpa iova_tree pointer at cleanup
...
Conflicts:
hw/core/machine.c
Context conflict with commit 314e0a84cd ("hw/core: remove needless
includes") because it removed an adjacent #include.
vhost-vdpa shadowed CVQ needs to know the maximum number of
vlans supported by the virtio-net device, so QEMU can restore
the VLAN state in a migration.
Co-developed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <ca03403319c6405ea7c400836a572255bbc9ceba.1690106284.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This function is called after virtio_load, so all vlan configuration is
lost in migration case.
Just allow all the vlan-tagged packets if vlan is not configured, and
trust device reset to clear all filtered vlans.
Fixes: 0b1eaa8803 ("virtio-net: Do not filter VLANs without F_CTRL_VLAN")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Hawkins Jiawei <yin31149@gmail.com>
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <95af0d013281282f48ad3f47f6ad1ac4ca9e52eb.1690106284.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Replace an on-stack variable length array in of_dpa_ig() with
a g_autofree heap allocation.
The codebase has very few VLAs, and if we can get rid of them all we
can make the compiler error on new additions. This is a defensive
measure against security bugs where an on-stack dynamic allocation
isn't correctly size-checked (e.g. CVE-2021-3527).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
In fill_rx_bd() we create a variable length array of size
etsec->rx_padding. In fact we know that this will never be
larger than 64 bytes, because rx_padding is set in rx_init_frame()
in a way that ensures it is only that large. Use a fixed sized
array and assert that it is big enough.
Since padd[] is now potentially rather larger than the actual
padding required, adjust the memset() we do on it to match the
size that we write with cpu_physical_memory_write(), rather than
clearing the entire array.
The codebase has very few VLAs, and if we can get rid of them all we
can make the compiler error on new additions. This is a defensive
measure against security bugs where an on-stack dynamic allocation
isn't correctly size-checked (e.g. CVE-2021-3527).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Rename e1000e_ba_state according and e1000e_write_hdr_to_rx_buffers for
consistency with IGB.
Signed-off-by: Tomasz Dzieciol <t.dzieciol@partner.samsung.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Packet-split descriptors are used by Linux VF driver for MTU values from 2048
Signed-off-by: Tomasz Dzieciol <t.dzieciol@partner.samsung.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Refactoring is done in preparation for support of multiple advanced
descriptors RX modes, especially packet-split modes.
Signed-off-by: Tomasz Dzieciol <t.dzieciol@partner.samsung.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Refactoring is done in preparation for support of multiple advanced
descriptors RX modes, especially packet-split modes.
Signed-off-by: Tomasz Dzieciol <t.dzieciol@partner.samsung.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Rename E1000E_RingInfo_st and E1000E_RingInfo according to qemu typdefs guide.
Signed-off-by: Tomasz Dzieciol <t.dzieciol@partner.samsung.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
TCP ACK detection is no longer present in igb.
Signed-off-by: Tomasz Dzieciol <t.dzieciol@partner.samsung.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
USO features of virtio-net device depend on kernel ability
to support them, for backward compatibility by default the
features are disabled on 8.0 and earlier.
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Andrew Melnychecnko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
New features are subject to check with vhost-user and vdpa.
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Passing additional parameters (USOv4 and USOv6 offloads) when
setting TAP offloads
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
The assert() that checks for valid MTU sizes can be triggered by
the guest (e.g. with the reproducer code from the bug ticket
https://gitlab.com/qemu-project/qemu/-/issues/517 ). Let's avoid
this problem by simply logging the error and refusing to activate
the device instead.
Fixes: d05dcd94ae ("net: vmxnet3: validate configuration values during activate")
Signed-off-by: Thomas Huth <thuth@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
[Mjt: change format specifier from %d to %u for uint32_t argument]
hw/net/i82596.c access the global 'address_space_memory'
calling the ld/st_phys() API. address_space_memory is
declared in "exec/address-spaces.h". Currently this header
is indirectly pulled in via another header. Explicitly include
it to avoid when refactoring unrelated headers:
hw/net/i82596.c:91:23: error: use of undeclared identifier 'address_space_memory'; did you mean 'address_space_destroy'?
return ldub_phys(&address_space_memory, addr);
^~~~~~~~~~~~~~~~~~~~
address_space_destroy
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230619074153.44268-2-philmd@linaro.org>
It is useful to extend the number of available PCIe devices to KVM guests
for passthrough scenarios and also to expose these models to a different
(big endian) architecture. Introduce a new config PCIE_DEVICES to select
models, Intel Ethernet adapters and one USB controller. These devices all
support MSI-X which is a requirement on s390x as legacy INTx are not
supported.
Cc: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Message-ID: <20230712080146.839113-1-clg@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently the only implementers of ARI is SR-IOV devices, and they
behave similar. Share the ARI next function number.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Message-Id: <20230710153838.33917-2-akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fixes: 544f0278af (virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX)
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230710153522.3469097-4-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
If vhost is enabled for virtio-net, Device-TLB enable/disable events
must be passed to vhost for proper IOMMU unmap flag selection.
Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230626091258.24453-3-viktor@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In this last queue for 8.1 we have a lot of fixes and improvements all
around: SMT support for powerNV, XIVE fixes, PPC440 cleanups, exception
handling cleanups and kvm_pph.h cleanups just to name a few.
Thanks everyone in the qemu-ppc community for all the contributions for
the next QEMU 8.1 release.
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Merge tag 'pull-ppc-20230707-1' of https://gitlab.com/danielhb/qemu into staging
ppc patch queue for 2023-07-07:
In this last queue for 8.1 we have a lot of fixes and improvements all
around: SMT support for powerNV, XIVE fixes, PPC440 cleanups, exception
handling cleanups and kvm_pph.h cleanups just to name a few.
Thanks everyone in the qemu-ppc community for all the contributions for
the next QEMU 8.1 release.
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# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 07 Jul 2023 03:34:44 PM BST
# gpg: using EDDSA key 17EBFF9923D01800AF2838193CD9CA96DE033164
# gpg: issuer "danielhb413@gmail.com"
# gpg: Good signature from "Daniel Henrique Barboza <danielhb413@gmail.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: 17EB FF99 23D0 1800 AF28 3819 3CD9 CA96 DE03 3164
* tag 'pull-ppc-20230707-1' of https://gitlab.com/danielhb/qemu: (59 commits)
ppc/pnv: Add QME region for P10
target/ppc: Remove pointless checks of CONFIG_USER_ONLY in 'kvm_ppc.h'
target/ppc: Restrict 'kvm_ppc.h' to sysemu in cpu_init.c
target/ppc: Define TYPE_HOST_POWERPC_CPU in cpu-qom.h
target/ppc: Move CPU QOM definitions to cpu-qom.h
target/ppc: Reorder #ifdef'ry in kvm_ppc.h
target/ppc: Have 'kvm_ppc.h' include 'sysemu/kvm.h'
target/ppc: Machine check on invalid real address access on POWER9/10
tests/qtest: Add xscom tests for powernv10 machine
ppc/pnv: Set P10 core xscom region size to match hardware
ppc/pnv: Log all unimp warnings with similar message
ppc440_pcix: Rename QOM type define abd move it to common header
ppc4xx_pci: Add define for ppc4xx-host-bridge type name
ppc4xx_pci: Rename QOM type name define
ppc440_pcix: Stop using system io region for PCI bus
ppc440_pcix: Don't use iomem for regs
ppc/sam460ex: Remove address_space_mem local variable
ppc440: Remove ppc460ex_pcie_init legacy init function
ppc440: Add busnum property to PCIe controller model
ppc440: Stop using system io region for PCIe buses
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
I confirmed it works with Windows even without this workaround. It is
likely to be a mistake so remove it.
Fixes: 3a977deebe ("Intrdocue igb device emulation")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
The datasheet does not say what happens when interrupt was asserted
(ICR.INT_ASSERT=1) and auto mask is *not* active.
However, section of 13.3.27 the PCIe* GbE Controllers Open Source
Software Developer’s Manual, which were written for older devices,
namely 631xESB/632xESB, 82563EB/82564EB, 82571EB/82572EI &
82573E/82573V/82573L, does say:
> If IMS = 0b, then the ICR register is always clear-on-read. If IMS is
> not 0b, but some ICR bit is set where the corresponding IMS bit is not
> set, then a read does not clear the ICR register. For example, if
> IMS = 10101010b and ICR = 01010101b, then a read to the ICR register
> does not clear it. If IMS = 10101010b and ICR = 0101011b, then a read
> to the ICR register clears it entirely (ICR.INT_ASSERTED = 1b).
Linux does no longer activate auto mask since commit
0a8047ac68e50e4ccbadcfc6b6b070805b976885 and the real hardware clears
ICR even in such a case so we also should do so.
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1707441
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Now that we have implemented unified short frames padding in the
QEMU networking codes, the small packet check logic in the receive
path is no longer needed.
Suggested-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Bin Meng <bmeng@tinylab.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
