Fix the floppy controller init wrappers to set the drive properties
only in case the DriveInfo pointers passed in are non NULL. This allows
to set the properties using -global.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
It's emitted whenever the watchdog device's timer expires. The action
taken is provided in the 'data' member.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add led status notification support to the usb kbd driver.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add led status notification support to the ps/2 kbd driver.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
You're supposed to use scsi-generic for that. Which rejects anything
but /dev/sg*.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Guest device and host netdev are peers, i.e. it's a 1:1 relation.
However, we fail to enforce that:
$ qemu -nodefaults --nographic -netdev user,id=net0 -device e1000,netdev=net0 -device virtio-net-pci,netdev=net0 -monitor stdio
QEMU 0.12.50 monitor - type 'help' for more information
(qemu) info network
Devices not on any VLAN:
net0: net=10.0.2.0, restricted=n peer=virtio-net-pci.0
e1000.0: model=e1000,macaddr=52:54:00:12:34:56 peer=net0
virtio-net-pci.0: model=virtio-net-pci,macaddr=52:54:00:12:34:57 peer=net0
It's all downhill from there.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Property "vlan" reports "failed to parse" even when the value parses
just fine, but the result doesn't name an existing VLAN.
Similarly, properties "drive", "chr" and "netdev" misleadingly report
"failed to parse" when the value doesn't name an existing host device.
Change PropertyInfo method parse to return an error code, so that
qdev_prop_parse() can report the error more accurately.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Use the named constant instead of -1.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reported-by: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
net.c used a constant to signify no MSI vectors were specified. Extend
that to all qdev devices.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reported-by: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
According to AMD document 21485D pp.141, APROMWE is bit 8 of BCR2.
Signed-off-by: Christopher Kilgour <techie@whiterocker.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The next commit will move the STOP event into do_vm_stop(), to
have the expected event sequence we need to emit the I/O error
event before calling vm_stop().
The expected sequence is:
{ "event": "BLOCK_IO_ERROR" [...] }
{ "event": "STOP" }
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Disable the MULTIPORT feature and MSI vectors for the 0.12 machine
types; those features are added only for 0.13 onwards.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Add a 0.12 machine type for compatibility with older versions. Mark the
default one as 0.13.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Commit 428c149b0b modified the argument
that virtio_blk_init takes. Update the s390 bus code that calls this
function.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
CC: Christoph Hellwig <hch@lst.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
UART_IIR_THRI is not a mask, but a possible value for the IIR ID.
Use UART_IIR_ID to extract this value.
Broken by commit 71e605f803.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
As we hard-wire the BSP to CPU 0 anyway and cpuid_apic_id equals
cpu_index, bsp_to_cpu can also be based on the latter directly. This
will help an early user of it: KVM while initializing mp_state.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This grand cleanup drops all reset and vmsave/load related
synchronization points in favor of four(!) generic hooks:
- cpu_synchronize_all_states in qemu_savevm_state_complete
(initial sync from kernel before vmsave)
- cpu_synchronize_all_post_init in qemu_loadvm_state
(writeback after vmload)
- cpu_synchronize_all_post_init in main after machine init
- cpu_synchronize_all_post_reset in qemu_system_reset
(writeback after system reset)
These writeback points + the existing one of VCPU exec after
cpu_synchronize_state map on three levels of writeback:
- KVM_PUT_RUNTIME_STATE (during runtime, other VCPUs continue to run)
- KVM_PUT_RESET_STATE (on synchronous system reset, all VCPUs stopped)
- KVM_PUT_FULL_STATE (on init or vmload, all VCPUs stopped as well)
This level is passed to the arch-specific VCPU state writing function
that will decide which concrete substates need to be written. That way,
no writer of load, save or reset functions that interact with in-kernel
KVM states will ever have to worry about synchronization again. That
also means that a lot of reasons for races, segfaults and deadlocks are
eliminated.
cpu_synchronize_state remains untouched, just as Anthony suggested. We
continue to need it before reading or writing of VCPU states that are
also tracked by in-kernel KVM subsystems.
Consequently, this patch removes many cpu_synchronize_state calls that
are now redundant, just like remaining explicit register syncs.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Instead of allocating a separate chunk for the first 640KB and another
for 1MB+, allocate one large chunk. This plays well in terms of alignment
and size with large pages.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
I always try to keep standard includes sorted
and add a comment why they are there (so they
can be removed when they are no longer needed).
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
C++ comments are unwanted, so this is fixed here.
* Replace C++ comments by C comments.
* Put code which was deactivated by a C++ comment in #if 0...#endif.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Real hardware would run an internal self-test.
The emulation just returns a passed status.
Original patch was from Reimar Döffinger, thanks.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Move code which reads the command block to the
new function read_cb. The patch also fixes some
endianess issues related to the command block
and moves declarations of local variables to
the beginning of the block.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
There is no need for a local variable "status".
Using tx.status makes it clearer which status
is addressed.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
CU Start is allowed when the CU is in the idle or suspended state.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The RNR interrupt is triggered under these conditions:
* the RU is not ready to receive a frame due to missing resources
* the RU is ready and a RU abort command was requested
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When compiling with -Wshadow, gcc gives a warning
which is fixed by renaming stat -> status.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Instead of magic numbers like 0x8000, symbolic names are used
for the SCB command and status bits.
There are too many configuration bits to use symbolic names
there, too. Using the BIT macro is a little help when comparing
code and documentation.
For the same reason, some other constants were replaced by
the BITS macro.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add descriptions for all devices.
These descriptions are shown when users call
qemu -device ?
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Only two boot ROM files are needed for all devices.
* Add these GPXE ROM files using new naming convention
(as discussed on qemu-devel). Both files were created
with http://rom-o-matic.net/, PCI vendor / device ids
as in ROM filenames and option BANNER_TIMEOUT = 0.
* Remove old PXE ROM file for i82559er.
It was replaced by gpxe-eepro100-80861209.rom.
* Update pc-bios/README (and sort entries).
Full support still needs additional eepro100 fixes.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The phy handling was wrong for PXE, GPXE boot:
GPXE's eepro100 driver did not detect a valid link.
This is fixed here.
V2 - Use UPPER_CASE for enum values
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Some system control block registers were addressed
using their offset value. Use symbolic names now
and clean the documentation.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When debug output was enabled (by defining DEBUG_EEPRO100),
some debug messages resulted in a compiler error.
This is fixed here.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Move userland PALcode handling into linux-user main loop so that
we can send signals from there. This also makes alpha_palcode.c
system-level only, so don't build it for userland. Add defines
for GENTRAP PALcall mapping to signals.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Since kernel uimage is getting bigger,
old fixed loading bases will result in regions overlap.
Add pad for fdt and ramdisk, so that they won't overlap with uimage.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
It's convinent to use rom to checking overlap, to reset etc.
And uImage and ramdisk loading has already moved to it.
Also, after we add fdt to rom, free it.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
So that the following registers init could be flushed back to kvm.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
If -usbdevice is used on a machine with no USB busses, usb_create
will fail and return NULL. Patch below handles this failure gracefully
rather than crashing when we try to init the device.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Add a QEMU timer only when needed (timeout status not set, timeout
irq wanted and timer set).
This patch is required for Darwin. Patch has been tested under
FreeBSD, Darwin and Linux.
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
o Implement receive overrun status. The FreeBSD uart driver
relies on this status in it's probe routine to determine the size
of the FIFO supported.
o As per the 16550 spec, do not overwrite the RX FIFO on an RX overrun.
o Do not allow TX or RX FIFO overruns to increment the data valid count
beyond the size of the FIFO.
o For reads of the IIR register, only clear the "TX holding register
emtpy interrupt" if the read reports this interrupt. This is required
by the specification and avoids losing TX interrupts when other,
higher priority interrupts (usually RX) are reported first.
Signed-off-by: Justin T. Gibbs <gibbs@FreeBSD.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
pci_data_write ignores high 8 bit in address,
so there seems to be no need to set them
in apb_pci.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
cc1: warnings being treated as errors
/src/qemu/hw/pl181.c: In function 'pl181_fifo_run':
/src/qemu/hw/pl181.c:185: error: 'value' may be used uninitialized in this function
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
The PL181 data transfer loop incorrectly terminates after the last FIFO
word is popped, discarding the last 3 bytes of data on a write transfer.
Signed-off-by: Paul Brook <paul@codesourcery.com>
/src/qemu/hw/ide/core.c: In function 'ide_drive_pre_save':
/src/qemu/hw/ide/core.c:2740: warning: comparison is always false due to limited range of data type
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
If the device can't be created, don't leak the QemuOpts and release the id of
the device that should have been added by the failed device_add.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Hi,
Kevin and I have agreed on the approach for this one now. So here is
the latest version of the patch for QEMU, submitting e820 reservation
entries via fw_cfg.
Cheers,
Jes
Use qemu-cfg to provide the BIOS with an optional table of e820 entries.
Notify the BIOS of the location of the TSS+EPT range to by reserving
it via the e820 table.
This matches a corresponding patch for Seabios, however older versions
of Seabios will default to the hardcoded address range and stay
compatible with current QEMU.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Save/restore information necessary to continue in progress PIO/ATAPI CMD
transfers.
This includes the IO buffer.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Michael noted we don't allow disabling of MSI for the virtio-serial-pci
device. Fix that.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
CC: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since commit 98b19252cf, all
serial devices declare MULTIPORT feature.
To allow 0.12 compatibility, we should clear this when
max_nr_ports is 1.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
virtio-serial-pci can support multiple ports in the current development
version that will become 0.13. Add compatibility options for the 0.12
and 0.11 pc machine types.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The version 0.13 will be the new default and compatibility options will
be added to the 0.12 version.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
I found that the QEMU USB keyboard support does not work properly with
the Set_Idle command. Once a non-zero value is given to Set_Idle,
then the keyboard reports an event on every poll - not based on the
time issued in the Set_Idle command.
I changed the code (see patch below) and it works for me. I'm not
that familiar with the qemu internals, so I'm not sure if this is the
best way to implement this feature.
-Kevin
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Don't raise irq when not enabled.
Raise irq on enabling if DMA_INTR is set
Don't clear irq unless it was raised by DMA, as there are other irq sources
Don't set DMA_INTR bit spuriously.
v1->v2:
- Don't clear irq unless it was raised by DMA
- Raise irq on enabling if DMA_INTR is set
- Assume revertion of 787cfbc432
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Cleanup versatile_pci: no need to re-set fields
to zero (pci core sets 0 already), use set_word
for status field. Compile-tested only, but seems obvious.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Anthony Liguori <aliguori@us.ibm.com>
This converts versatile_pci to use symbolic
constants. Verified by comparing binary to
original one.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Anthony Liguori <aliguori@us.ibm.com>
Linux with CONFIG_PPC64 doesn't support ADB devices anymore, so we have to
use USB for keyboard and mouse.
This patch enables USB per default on U3 and adds a virtual keyboard and mouse
there.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
While trying to find the right channel number for the DBDMA emulation I
stumbled across segmentation faults that were purely triggered by the guest.
The guest should never have the possiblity to segfault us, so let's check
all indirect function calls on a channel, so the code even works for channels
that have not been reserved.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Per default Linux doesn't come with a lot of storage adapters enabled on
Mac configurations. The one that's pretty much always present is the pmac-ide,
while the cmd64x is almost never included in any distribution.
So let's switch to use the MacIO based IDE controller. There is corresponding
OpenBIOS code to get interrupts working properly.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Our guest systems need to know by how much the timebase increases every second,
so there usually is a "timebase-frequency" property in the cpu leaf of the
device tree.
This property is missing in OpenBIOS.
With qemu, Linux's fallback timebase speed and qemu's internal timebase speed
match up. With KVM, that is no longer true. The guest is running at the same
timebase speed as the host.
This leads to massive timing problems. On my test machine, a "sleep 2" takes
about 14 seconds with KVM enabled.
This patch exports the timebase frequency to OpenBIOS, so it can then put them
into the device tree.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The interrupt code as is didn't really work for me. I couldn't even convince
Linux to take interrupt 9 in an interrupt-map.
So let's do this right. Let's map all PCI interrupts to 0x1b - 0x1e. That way
we're at least a small step closer to what real hardware does.
I also took the interrupt pin to line conversion from OpenBIOS, which at least
assures us we're compatible with our firmware :-).
A dump of the PCI interrupt-map from a U2 (iBook):
00009000 00000000 00000000 00000000 ff97c528 00000034 00000001
0000d800 00000000 00000000 00000000 ff97c528 0000003f 00000001
0000c000 00000000 00000000 00000000 ff97c528 0000001b 00000001
0000c800 00000000 00000000 00000000 ff97c528 0000001c 00000001
0000d000 00000000 00000000 00000000 ff97c528 0000001d 00000001
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
To ease debugging and to know what we're lacking, I found it really useful to
have an lspci dump of a real U3 based G5 around. So I added a comment for it.
If people don't think it's important enough to include this information in the
sources, just don't apply this patch.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The "Mac99" type so far defines a "U2" based configuration. Unfortunately,
there have never been any U2 based PPC64 machines. That's what the U3 was
developed for.
So let's split the Mac99 machine in a PPC64 and a PPC32 machine. The PPC32
machine stays "Mac99", while the PPC64 one becomes "Mac99_U3". All peripherals
stay the same.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The Uninorth PCI bridge requires different layouts in its PCI config space
accessors.
This patch introduces a conversion function that makes it compatible with
the way Linux accesses it.
I also kept an OpenBIOS compatibility hack in. I think it'd be better to
take small steps here and do the config space access rework in OpenBIOS
later on. When that's done we can remove that hack.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Remove useless set to zero lines. Latency programming should be
done by BIOS, reset value is zero.
Add revision to APB, don't enable PCI_COMMAND_MASTER and set status
according to APB specification.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Commit c2039bd0ff made rom loading
automatic for non-PC architectures. Remove now mostly unused
conditional rom loading support.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This patch fixes 525e05147d.
pci host bridge doesn't have header type of bridge.
The check should be by header type, instead of pci class device.
Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Export the physical block size in the ATA IDENTIFY command. The
other topology values are not supported in ATA so skip them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Export the physical block size in the READ CAPACITY (16) command,
and add the new block limits VPD page to export the minimum and
optiomal I/O sizes.
Note that we also need to bump the scsi revision level to SPC-2
as that is the minimum requirement by at least the Linux kernel
to try READ CAPACITY (16) first and look at the block limits VPD
page.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Export all topology information in the block config structure,
guarded by a new VIRTIO_BLK_F_TOPOLOGY feature flag.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add three new qdev properties to export block topology information to
the guest. This is needed to get optimal I/O alignment for RAID arrays
or SSDs.
The options are:
- physical_block_size to specify the physical block size of the device,
this is going to increase from 512 bytes to 4096 kilobytes for many
modern storage devices
- min_io_size to specify the minimal I/O size without performance impact,
this is typically set to the RAID chunk size for arrays.
- opt_io_size to specify the optimal sustained I/O size, this is
typically the RAID stripe width for arrays.
I decided to not auto-probe these values from blkid which might easily
be possible as I don't know how to deal with these issues on migration.
Note that we specificly only set the physical_block_size, and not the
logial one which is the unit all I/O is described in. The reason for
that is that IDE does not support increasing the logical block size and
at last for now I want to stick to one meachnisms in queue and allow
for easy switching of transports for a given backing image which would
not be possible if scsi and virtio use real 4k sectors, while ide only
uses the physical block exponent.
To make this more common for the different block drivers introduce a
new BlockConf structure holding all common block properties and a
DEFINE_BLOCK_PROPERTIES macro to add them all together, mirroring
what is done for network drivers. Also switch over all block drivers
to use it, except for the floppy driver which has weird driveA/driveB
properties and probably won't require any advanced block options ever.
Example usage for a virtio device with 4k physical block size and
8k optimal I/O size:
-drive file=scratch.img,media=disk,cache=none,id=scratch \
-device virtio-blk-pci,drive=scratch,physical_block_size=4096,opt_io_size=8192
aliguori: updated patch to take into account BLOCK events
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The addition of the whole ATA IDENTIY page caused the config space to
go above the allowed size in the PCI spec, and thus the feature was
already reverted in the Linux guest driver and disabled by default in
qemu.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
It's not needed to check the return of qobject_from_jsonf()
anymore, as an assert() has been added there.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Fix a race condition where qemu finds that there are not enough virtio
ring buffers available and the guest make more buffers available before
qemu can enable notifications.
Signed-off-by: Tom Lendacky <toml@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This fixes a segfault due to buffer overrun in the usb-serial device.
The memcpy was incrementing the start location by recv_used yet, the
computation of first_size (how much to write at the end of the buffer
before wrapping to the front) was not accounting for it. This causes the
next element after the receive buffer (recv_ptr) to get overwritten with
random data.
Signed-off-by: David Ahern <daahern@cisco.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
I have streaming audio devices working within qemu-kvm. This is a port
of the changes to qemu.
Streaming audio generates a series of isochronous requests that are
repetitive and time sensitive. The URBs need to be submitted in
consecutive USB frames and responses need to be handled in a timely manner.
Summary of the changes for isochronous requests:
1. The initial 'valid' value is increased to 32. It needs to be higher
than its current value of 10 since the host adds a 10 frame delay to the
scheduling of the first request; if valid is set to 10 the first
isochronous request times out and qemu cancels it. 32 was chosen as a
nice round number, and it is used in the path where a TD-async pairing
already exists.
2. The token field in the TD is *not* unique for isochronous requests,
so it is not a good choice for finding a matching async request. The
buffer (where to write the guest data) is unique, so use that value instead.
3. TD's for isochronous request need to be completed in the async
completion handler so that data is pushed to the guest as soon as it is
available. The uhci code currently attempts to process complete
isochronous TDs the next time the UHCI frame with the request is
processed. The results in lost data since the async requests will have
long since timed out based on the valid parameter. Increasing the valid
value is not acceptable as it introduces a 1+ second delay in the data
getting pushed to the guest.
4. The frame timer needs to be run on 1 msec intervals. Currently, the
expire time for the processing the next frame is computed after the
processing of each frame. This regularly causes the scheduling of frames
to shift in time. When this happens the periodic scheduling of the
requests is broken and the subsequent request is seen as a new request
by the host resulting in a 10 msec delay (first isochronous request is
scheduled for 10 frames from when the URB is submitted).
[ For what's worth a small change is needed to the guest driver to have
more outstanding URBs (at least 4 URBs with 5 packets per URB).]
Signed-off-by: David Ahern <daahern@cisco.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Just call bdrv_mon_event() in the right place.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Just call bdrv_mon_event() in the right place.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Just call bdrv_mon_event() in the right place.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Gerd Hoffmann
Luiz Capitulino
Markus Armbruster
Amit Shah
Chris Kilgour
Izik Eidus
Aurelien Jarno
Blue Swirl
Christoph Hellwig
Anthony Liguori
Jan Kiszka
Avi Kivity
Stefan Weil
Paul Brook
Richard Henderson
Liu Yu
Frediano Ziglio
Justin T. Gibbs
Michael S. Tsirkin
Kevin Wolf
Jes Sorensen
Marcelo Tosatti
Kevin O'Connor
Artyom Tarasenko
Alexander Graf
Isaku Yamahata
Tom Lendacky
David S. Ahern