Bits 12 to 15 in bridge control register are reserver and must be
read-only zero, curent mask is 0xffff which makes them writeable. Fix
this up by using symbolic bit names for writeable bits instead of a
hardcoded constant.
Fix a comment w1mask -> w1cmask as well.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Open-code functions created in the previous patch,
to make code more compact and clear.
Detcted and documented what looks like a bug in code
that becomes apparent from this refactoring.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Added some TODOs: they are trivial but omitted here
to make the patch logic as transparent as possible.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch implements helper functions for pcie aer capability
which will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch adds W1C bit support in the initialization/reset of pci
status registers.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Errors should be logged using error_report() so they go to the
appropriate monitor.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
As pointed out by avi the vgabios update is guest-visible and thus has
migration implications.
One change is that the vga has a valid pci rom bar now. We already have
a pci bus property to enable/disable the rom bar and we'll load the bios
via fw_cfg as fallback for the no-rom-bar case. So we just have to add
compat properties to handle this case.
A second change is that the magic bochs lfb @ 0xe0000000 is gone. When
live-migrating a guest from a older qemu version it might be using the
lfb though, so we have to keep it for the old machine types. The patch
enables the bochs lfb in case we don't have the pci rom bar enabled
(i.e. we are in 0.13+older compat mode).
This patch depends on these patches which add (and use) the pc-0.13
machine type:
http://patchwork.ozlabs.org/patch/70797/http://patchwork.ozlabs.org/patch/70798/
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: avi@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
While not explicitly stated in the spec, it was observed on real systems
that enabling loopback testing on the pcnet controller disables
reception of external frames. And some legacy software relies on it, so
provide this behavior.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch enables MSI-X for virtfs-9p-pci. It also adds a
compat property to pc-0.13 which turns it of there to stay
compatible to 0.13-stable.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We have an OS which writes to port 0x400 when probing for special hardware.
This causes an exit of the VM. With SeaBIOS this port isn't used anyway.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-By: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Bernhard Kohl <bernhard.kohl@nsn.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We can't let the compiler define the alignment for qemu_cfg data.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch adds missing braces around if/else statements that call
macros which are likely to result in errors if the macro is
changed. It also makes the code comply better with CODING_STYLE.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
A via -kernel supplied x86_64 ELF image is being started in 32bit mode.
Detect and exit if a 64bit image has been supplied.
Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
local_apics are allocated sequentially and never removed, so
we can stop any iterations that go to MAX_APICS as soon as we
hit the first NULL. Looking at a small guest running a virtio-net
workload with oprofile, this drops apic_get_delivery_bitmask()
from #3 in the profile to down in the noise.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch fixes hot unplug of cold plugged devices
(those present at system start), which got broken by
5beb8ad503c88a76f2b8106c3b74b4ce485a60e1 .
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cam Macdonell <cam@cs.ualberta.ca>
Tested-by: Cam Macdonell <cam@cs.ualberta.ca>
Reported-by: Cam Macdonell <cam@cs.ualberta.ca>.
pcibus_dev_print() was erroneously retrieving the device bus
number from the secondary bus number offset of the device
instead of the bridge above the device. This ends of landing
in the 2nd byte of the 3rd BAR for devices, which thankfully
is usually zero.
Note: pcibus_get_dev_path() copied this code,
inheriting the same bug. pcibus_get_dev_path() is used for
ramblock naming, so changing it can effect migration. However,
I've only seen this byte be non-zero for an assigned device,
which can't migrate anyway, so hopefully we won't run into
any issues.
This patch does not touch pcibus_get_dev_path, as
bus number is guest assigned for nested buses,
so using it for migration is broken anyway.
Fix it properly later.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When adding the length to the pseudo header, we're not properly
accounting for overflow.
From: Mark Wu <dwu@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Make stdvga provide the new vgabios binary (with pcibios support)
using the PCI option rom bar. Seabios will happily load it from
there. The new vga bios will also lookup the framebuffer address
in pci config space, so the magic bochs lfb @ 0xe0000000 is not
needed any more -> zap it.
Without the patch:
# dmesg | grep framebuffer
vesafb: framebuffer at 0xe0000000, mapped to 0xf7e80000, using 1875k, total 8192k
# lspci -vs2
00:02.0 VGA compatible controller: Technical Corp. Device 1111 (prog-if 00 [VGA controller])
Subsystem: Qumranet, Inc. Device 1100
Physical Slot: 2
Flags: fast devsel
Memory at f0000000 (32-bit, prefetchable) [size=8M]
Expansion ROM at <unassigned> [disabled]
With patch applied:
# dmesg | grep framebuffer
vesafb: framebuffer at 0xf0000000, mapped to 0xf7e80000, using 1875k, total 8192k
# lspci -vs2
00:02.0 VGA compatible controller: Technical Corp. Device 1111 (prog-if 00 [VGA controller])
Subsystem: Qumranet, Inc. Device 1100
Physical Slot: 2
Flags: fast devsel
Memory at f0000000 (32-bit, prefetchable) [size=8M]
Expansion ROM at f0800000 [disabled] [size=64K]
cheers,
Gerd
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch fixes hot unplug of cold plugged devices
(those present at system start), which got broken by
5beb8ad503c88a76f2b8106c3b74b4ce485a60e1 .
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cam Macdonell <cam@cs.ualberta.ca>
Tested-by: Cam Macdonell <cam@cs.ualberta.ca>
Reported-by: Cam Macdonell <cam@cs.ualberta.ca>.
pcibus_dev_print() was erroneously retrieving the device bus
number from the secondary bus number offset of the device
instead of the bridge above the device. This ends of landing
in the 2nd byte of the 3rd BAR for devices, which thankfully
is usually zero.
Note: pcibus_get_dev_path() copied this code,
inheriting the same bug. pcibus_get_dev_path() is used for
ramblock naming, so changing it can effect migration. However,
I've only seen this byte be non-zero for an assigned device,
which can't migrate anyway, so hopefully we won't run into
any issues.
This patch does not touch pcibus_get_dev_path, as
bus number is guest assigned for nested buses,
so using it for migration is broken anyway.
Fix it properly later.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When adding the length to the pseudo header, we're not properly
accounting for overflow.
From: Mark Wu <dwu@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The HDA bus supports up to 15 codecs, with addresses 0 ... 14.
We get that wrong in two places:
* When handing out addresses we accept address 15 as valid.
* The bitmasks for two registers (WAKEEN and STATESTS) don't
have bit 14 set.
This patch fixes it.
[ v2: codestyle: add braces ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
The HDA bus supports up to 15 codecs, with addresses 0 ... 14.
We get that wrong in two places:
* When handing out addresses we accept address 15 as valid.
* The bitmasks for two registers (WAKEEN and STATESTS) don't
have bit 14 set.
This patch fixes it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
This patch adds MSI support to the intel hda audio driver. It is
enabled by default, use '-device intel-hda,msi=0' to disable it.
[ v2: codestyle: add braces ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
When the guest updates the WAKEEN register we
must re-calculate the IRQ status.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
HDA: Honor WAKEEN bits when deciding to raise an interrupt on codec
status change. This prevents an interrupt storm with the Haiku HDA
driver which does not handle codec status changes in the irq handler.
Signed-off-by: François Revol <revol@free.fr>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
Add pci exit callback for the intel-hda device and cleanup properly.
Also add an exit callback to the HDA bus implementation and make sure
it is called on qdev_free().
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
Fix scsi-disk to use the usual completion paths that involve rerror/werror
handling instead of directly completing the requests in cases where
bdrv_aio_readv/writev returns NULL.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Fix virtio-blk to use the usual completion path that involves werror handling
instead of directly completing the request in cases where bdrv_aio_flush
returns NULL.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This pulls the request completion for error cases from the caller to
scsi_disk_emulate_command. This should not change semantics, but allows to
reuse scsi_handle_write_error() for flushes in the next patch.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
This implements the rerror option for SCSI disks.
It also includes minor changes to the write path where the same code is used
that was criticized in the review for the changes to the read path required for
rerror support.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
