Adds -readconfig and -writeconfig command line switches to read/write
QemuOpts from config file.
In theory you should be able to do:
qemu < machine config cmd line switches here > -writeconfig vm.cfg
qemu -readconfig vm.cfg
In practice it will not work. Not all command line switches are
converted to QemuOpts, so you'll have to keep the not-yet converted ones
on the second line. Also there might be bugs lurking which prevent even
the converted ones from working correctly.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add functions to parse QemuOpts from a git-style config file.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add a function to write the QemuOpts configuration to a git-style
config file.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Factor out the QemuOptsList search code for upcoming users.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Explain the existing format specific options that can be used with qemu-img
create/convert -o ...
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The old options are still supported for compatibility, but they are
inconsistent (for example create -b vs. convert -B for backing files) and
incomplete (-F only exists for create) which tends to confuse people. Remove
all references to the old options from the documentation to guide users to the
more consistent -o options.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The description of the image formats is too long to be a subitem of a parameter
description. It will become even longer when we include the options provided by
the respective format.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Now qemu_error can be called also from shared files, e.g. block.c.
Signed-off-by: Naphtali Sprei <nsprei@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Add device properties (size of statistical data,
extended tcb support) to EEPRO100State and set
these values for the different devices.
* Fix PCI configuration for existing devices.
* Add initialisation code for missing devices.
* Remove function device_supports_eTxCB.
It is no longer needed.
* Fix dump of statistical data. It now respects
the real size of the statistical data.
An endianess issue was fixed here, too.
* CU_SHOWSTATS, CU_DUMPSTATS now write a
completion value after the statistical data.
There is no need to keep this value in
eepro100_stats_t, so member "complete"
could be removed.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
make pci_info_device() print out bridge's filtering value like
io base/limit, subbus and subordinate bus.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch implements pci bridge filtering.
TODO: currently almost all the map funcions assumes
filtered_size == size and addr & ~(size - 1) == addr.
However with bridge filtering, they aren't always true.
Teach them such cases, such that filtered_size < size and
addr & (size - 1) != 0.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
split out device iteration logic from pci_for_each_device().
factored out function, pci_for_each_device_under_bus() will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Remove one indentation of pci_update_mappings.
Just for cosmetics, no logic change.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
- Only sets default subsystem id for header type 00.(normal header type)
because header type 01 doesn't have subsystem id, and uses the register
for other purpose. So setting default subsystem id doesn't make sense.
- initialize wmask more for header type 01.(bridge header type)
Without those wmasks, linux was confused not boot,
and lspci was confused not to print out expected IO/memory range.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When updated ROM expantion address of header type 0, it missed
to update mappings.
Add PCI_ROM_ADDRESS check whether to call pci_update_mappings()
Also update pci mapping when PCI_ROM_ADDRESS1 is written for header type 1.
pci_update_mapping() path isn't performance critical,
so call it even independent of header type.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
clean up pci_default_write_config() by the range helper functions.
Suggested by Michael S. Tsirkin <mst@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
add helper function to check ranges overlap suggested by
Michael S. Tsirkin <mst@redhat.com>.
His original suggestion was to use [first, last], however I chosen
to use offset, length pair, i.e. [offset, offset + length)
because pci configuration space related functions all uses offset and length
pair, so it helps to avoid to type constant twice.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch adds common routines for pcie host bridge and pcie mmcfg.
This will be used by q35 based chipset emulation.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
VMSTATE_BUFFER_UNSAFE_INFO for as a buffer with specified VMStateInfo.
It will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
change the first argument, void *opaque to PCIBus *s
of the pci_data_{read, write}.
They aren't used as direct callback so the argument type
don't have to be void*. So change it to the right type.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Move pci host stuff from pci.c to pci_host.c.
And add some comments.
Later pcie host bridge functions will be defined in pcie_host.c
not to bloat pci.c.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
factor out the logic which converts io port address into pci device
and offset in PCI configuration space.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch sorts out/enhances pci code to track pci bus topology
more accurately.
- Track host bus bridge with pci domain number. Although the
current qemu implementation supports only pci domian 0 yet.
- Track pci bridge parent-child relationship.
When looking down from pci host bus for pci sub bus, be aware of
secondary bus/subordinate bus.
Thus pci configuration transaction is more accurately emulated.
This patch adds new member to PCIBus to track pci bus topology.
Since qdev already tracks down bus relationship, those new member
wouldn't be necessary.
However it would be addressed later because not all the pci device
isn't converted to qdev yet.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since It can be retrieved from pci configuration space,
the member is unnecessary.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
implemented pci 64bit bar support.
The tricky bit is pci_update_mapping().
An OS is allowed to set the BAR such that OS can't address the area
pointed by BAR. It doesn't make sense, though.
In that case, don't map the BAR.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is preliminary for 64bit bar.
For 64bit bar support, change pcibus_t which represents
pci bus addr/size from uint32_t to uint64_t.
And also change FMT_pcibus for printf.
In pci_update_mapping() checks 32bit overflow.
So the check must be updated too.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is preliminary for 64bit BAR.
Later pcibus_t will be changed from uint32_t to uint64_t.
Introduce FMT_PCIBUS for printf format for pcibus_t.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is preliminary for 64 bit BAR support.
Introduce dedicated type, pcibus_t, to represent pci bus address/size
instead of uint32_t.
Later this type will be changed to uint64_t.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
split static functions in pci_host.h into pci_host.c and
pci_host_template.h.
Later a structures declared in pci_host.h, PCIHostState, will be used.
However pci_host.h doesn't allow to include itself easily. This patches
addresses it.
pci_host.h includes functions which are instantiated in .c by including
pci_host.h with typedefing pci_addr_t.
pci_addr_t is per pci host bridge and is typedef'ed to uint32_t for ioio
or target_phys_addr_t for mmio in .c file.
That prevents from including pci_host.h to use PCIHostState because of
requiring type, pci_addr_t.
Its purpose to include is to instantiate io function for mmio or ioio
depending on which pci host bridge requires ioio or mmio.
To avoid including code, we always instantiate both version.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
make pci_bar() aware of header type 1. When PCI_ROM_SLOT
it should return PCI_ROM_ADDRESS1 (!= PCI_ROM_ADDRESS)
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch cleans up pci_default_read_config() removing
ugly length and range check.
Suggested by "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
make constants for pci base address match pci_regs.h by
renaming PCI_ADDRESS_SPACE_xxx to PCI_BASE_ADDRESS_SPACE_xxx.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
use pci_set_word() for pci command register.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
- use symbolic constant
- use helper function pci_set_xxx()
- removed lines which initializes to 0.
It is unnecessary because it is already zeroed.
- add some comments on command registers.
Some initial values are suspicious because they seems to
be specific to apb_pci.c which is the only user of pci bridge right now.
For now don't touch those values to avoid breakage.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
use pci_[gs]et_{byte, word, long}() to access pci configuration
space.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
add helper functions to get/set PCIDevice::config
Those will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
define a constant to represent a unmapped bar instead of -1 and use it.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
use PCI_SLOT() and PCI_FUNC() where appropriate instead of
direct use of bit operation.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
introduce constant PCI_NUM_PINS for the number of interrupt pins, 4.
and use it.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
add missing ## in PCI_DPRINTF() to compile.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This is needed also for qemu-io, but not for qemu-nbd.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since config-host.h is generated by the Makefile (1215c6e76),
building (only) qemu-img fails:
[user@f12-uri qemu]$ make distclean (or git clone qemu)
[user@f12-uri qemu]$ ./configure ...
[user@f12-uri qemu]$ make qemu-img
GEN config-all-devices.mak
GEN qemu-img-cmds.h
CC qemu-img.o
In file included from qemu-img.c:24:
qemu-common.h:32:25: error: config-host.h: No such file or directory
Signed-off-by: Uri Lublin <uril@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is a followup to 8eca6b1bc7,
fixing crashes when guests with 2.6.25 virtio drivers have saturated
virtio network connections.
https://bugs.edge.launchpad.net/ubuntu/+source/qemu-kvm/+bug/458521
That patch should have been whitelisting *_HOST_* rather than the the
*_GUEST_* features.
I tested this by running an Ubuntu 8.04 Hardy guest (2.6.24 kernel +
2.6.25-virtio driver). I saturated both the incoming, and outgoing
network connection with nc, seeing sustained 6MB/s up and 6MB/s down
bitrates for ~20 minutes. Previously, this crashed immediately. Now,
the guest does not crash and maintains network connectivity throughout
the test.
Signed-off-by: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
A size of 0 should be valid and cannot be treated as "missing value". Use -1
for this purpose instead.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Okay, let's try re-enabling the drain-entire-queue behaviour, with a
difference - before each subsequent packet, use qemu_can_send_packet()
to check that we can send it. This is similar to how we check before
polling the tap fd and avoids having to drop a packet if the receiver
cannot handle it.
This patch should be a performance improvement since we no longer have
to go through the mainloop for each packet.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We should only return zero from receive() for a condition which we'll
get notification of when it changes. Currently, we're returning zero
if the guest driver is not ready, but we won't ever flush our queue
when that status changes.
Also, don't check buffer space in can_receive(), but instead just allow
receive() to return zero when this condition occurs and have the caller
handle queueing the packet.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
