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2011-01-10pci: allow devices being tagged as not hotpluggable.Gerd Hoffmann4-0/+20
This patch adds a field to PCIDeviceInfo to tag devices as being not hotpluggable. Any attempt to plug-in or -out such a device will throw an error. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-05rtl8139: Use subsection to restrict migration after hotplugAlex Williamson1-1/+27
rtl8139 includes a cpu_register_io_memory acquired value in it's migration data. This is not only unecessary, but we should treat these values as unique to the VM instances since the value depends on call order. In most cases, this miraculously still works. However, if devices are added or removed from the system, it may represent an ordering change, which could cause the target rtl8139 device to make use of another device's cpu_register_io_memory value. If we detect that a hot-add/remove has occured, include a subsection to restrict migrations only to driver versions known to include this fix. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-05qdev: Track runtime machine modificationsAlex Williamson2-0/+11
Create a trivial interface to track whether the machine has been modified since boot. Adding or removing devices will trigger this to return true. An example usage scenario for such an interface is the rtl8139 driver which includes a cpu_register_io_memory() value in it's migration stream. For the majority of migrations, where no hotplug has occured in the machine, this works correctly. Once the machine is modified, we can use this interface to detect that and include a subsection for the device to prevent migrations to rtl8139 versions with this bug. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-27pci: fix migration path for devices behind bridgesMichael S. Tsirkin1-11/+37
The device path used for migration is currently broken for for all devices behind a nested bridge. Replace this by a hierarchical list of slot/function numbers, walking the path from root down to device. Add :00 after the domain number so that if there are no nested bridges, this is compatible with what we have now. Note: as pointed out by Gleb, using openfirmware paths might be cleaner, doing this would break compatibility though, and the IDs used are not guest or user visible at all, so breaking the compatibility is probably not worth it. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-24pcie/aer: glue aer error injection into qemu monitorIsaku Yamahata4-0/+266
introduce pcie_aer_inject_error command. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-24pci: introduce a helper function to convert qdev id to PCIDeviceIsaku Yamahata2-0/+36
This patch introduce a helper function to get PCIDevice from qdev id. This function will be used later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-24qdev: export qdev_find_recursive() for later useIsaku Yamahata2-1/+3
This patch exports qdev_find_recursive() for later use. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-22build, pci: remove QMP dependency on core PCI codeIsaku Yamahata3-3/+40
by introducing pci-stub.c, eliminate QMP dependency on core PCI code rquired by query-pci command. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-22pcie: add flr supportIsaku Yamahata6-13/+12
Support flr: trigger device reset on flr config write. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-22pc/piix: fix mismerge of b1aeb92666d2fde413c34578b3b42bbfe5f2a506Isaku Yamahata1-8/+4
The change set of b1aeb92666d2fde413c34578b3b42bbfe5f2a506 in pci branch was mismerged. The compatibility should be kept for 0.13, not for 0.14. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-21qdev: remove an unused functionMichael S. Tsirkin2-7/+1
qbus_reset_all is unused, remove it Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-20qbus: register reset handler for qbus whose parent is NULLIsaku Yamahata3-2/+18
Stefan Weil reported the regression caused by ec990eb622ad46df5ddcb1e94c418c271894d416 as follows > The second regression also occurs with MIPS malta. > Networking no longer works with the default pcnet nic. > > This is caused because the reset function for pcnet is no > longer called during system boot. The result in an invalid > mac address (all zero) and a non-working nic. > > For this second regression I still have no simple solution. > Of course mips_malta.c should be converted to qdev which > would fix both problems (but only for malta system emulation). The issue is, it is assumed that all qbuses, qdeves are under main_system_bus. But there are qbuses whose parent is NULL. So it is necessary to trigger reset for those qbuses. (On the other hand, if NULL is passed to qdev_create(), its parent bus is main_system_bus.) Ideally those buses should be moved under bus controller device which is qdev. But it's not done yet. So register qbus reset handler for qbus whose parent is NULL. Reported-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: "Michael S. Tsirkin" <mst@redhat.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-19qdev: sysbus_get_default must not return a NULL pointer (fix regression)Stefan Weil1-4/+5
Every system should have some sort of main system bus, so sysbus_get_default should always return a valid bus. Without this patch, at least mipssim and malta no longer start but raise a null pointer access exception (caused by commit ec990eb622ad46df5ddcb1e94c418c271894d416). Cc: Anthony Liguori <anthony@codemonkey.ws> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-19pci: don't use bus number in migration, stub outMichael S. Tsirkin1-1/+4
Using bus numbers in migration is clearly wrong as they are guest assigned. Not really sure what the right thing to do is, for now stick 0 in there so things keep working for non-nested setups, add a TODO. We also probably have to mark nested bridges as non-migrateable until this is fixed? Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Alex Williamson <alex.williamson@redhat.com>
2010-12-19ahci: delete write-only variables (v2)Blue Swirl1-4/+1
Avoid these warnings with GCC 4.6.0: /src/qemu/hw/ide/ahci.c: In function 'ahci_reset_port': /src/qemu/hw/ide/ahci.c:810:14: error: variable 'tfd' set but not used [-Werror=unused-but-set-variable] /src/qemu/hw/ide/ahci.c: In function 'handle_cmd': /src/qemu/hw/ide/ahci.c:1103:19: error: variable 'pr' set but not used [-Werror=unused-but-set-variable] In the tfd variable case, fix the logic also. CC: Alexander Graf <agraf@suse.de> CC: Kevin Wolf <kwolf@redhat.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-19vga: Declare as little endianBlue Swirl1-25/+1
This patch replaces explicit bswaps with endianness hints to the mmio layer. CC: Alexander Graf <agraf@suse.de> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-18win32: Fix CRLF problem in make_device_config.shStefan Weil1-1/+1
QEMU source code with CRLF line endings which is quite common on windows hosts fails with current make_device_config.sh. The awk script gets the name of the included file with \r, so instead of pci.mak it will search for pci.mak\r which of course does not work. Fix this by removing any \r. v2: Avoid using sub() and \r with awk because they are unsupported on some platforms. Use tr to remove \r. This new solution improves portability and was suggested by Paolo Bonzini. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Acked-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-18sparc32: ledma extra registersBob Breuer2-8/+23
ledma has 0x20 bytes of registers according to OBP, and at least Solaris9 reads the 5th register which is beyond what we've mapped. So let's setup a flag (inspired by a previous patch from Blue Swirl) to identify ledma from espdma, and map another 16 bytes of registers which return 0. Signed-off-by: Bob Breuer <breuerr@mc.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-17Fix warning on mingw32Blue Swirl1-1/+2
Avoid this warning like other uses of setsockopt: /src/qemu/net/socket.c: In function 'net_socket_mcast_create': /src/qemu/net/socket.c:210: warning: passing argument 4 of 'setsockopt' from incompatible pointer type Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-17ide: Build fix for via.cKevin Wolf1-1/+1
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17ide: Fix build for cmd646.cKevin Wolf1-2/+2
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Andreas Färber <andreas.faerber@web.de>
2010-12-17docs: Fix missing carets in QED specificationStefan Hajnoczi1-2/+2
For some reason the carets ('^') in the QED specification disappeared. This patch puts them back. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17Add proper -errno error return values to qcow2_open()Jes Sorensen1-18/+42
In addition this adds missing braces to the function to be consistent with the coding style. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17block/qcow2.c: rename qcow_ functions to qcow2_Jes Sorensen3-98/+104
It doesn't really make sense for functions in qcow2.c to be named qcow_ so convert the names to match correctly. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qed: Consistency check supportStefan Hajnoczi3-3/+336
This patch adds support for the qemu-img check command. It also introduces a dirty bit in the qed header to mark modified images as needing a check. This bit is cleared when the image file is closed cleanly. If an image file is opened and it has the dirty bit set, a consistency check will run and try to fix corrupted table offsets. These corruptions may occur if there is power loss while an allocating write is performed. Once the image is fixed it opens as normal again. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qed: Read/write supportStefan Hajnoczi4-2/+663
This patch implements the read/write state machine. Operations are fully asynchronous and multiple operations may be active at any time. Allocating writes lock tables to ensure metadata updates do not interfere with each other. If two allocating writes need to update the same L2 table they will run sequentially. If two allocating writes need to update different L2 tables they will run in parallel. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qed: Table, L2 cache, and cluster functionsStefan Hajnoczi8-2/+866
This patch adds code to look up data cluster offsets in the image via the L1/L2 tables. The L2 tables are writethrough cached in memory for performance (each read/write requires a lookup so it is essential to cache the tables). With cluster lookup code in place it is possible to implement bdrv_is_allocated() to query the number of contiguous allocated/unallocated clusters. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qed: Add QEMU Enhanced Disk image formatStefan Hajnoczi4-0/+704
This patch introduces the qed on-disk layout and implements image creation. Later patches add read/write and other functionality. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17docs: Add QED image format specificationStefan Hajnoczi1-0/+130
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qemu-io: Fix typo in help textsKevin Wolf1-7/+7
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17raw-posix: add discard supportChristoph Hellwig2-0/+71
Add support to discard blocks in a raw image residing on an XFS filesystem by calling the XFS_IOC_UNRESVSP64 ioctl to punch holes. Support for other hole punching mechanisms can be added when they become available. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qemu-io: Add discard commandStefan Hajnoczi1-0/+88
discard [-Cq] off len -- discards a number of bytes at a specified offset discards a range of bytes from the given offset Example: 'discard 512 1k' - discards 1 kilobyte from 512 bytes into the file Discards a segment of the currently open file. -C, -- report statistics in a machine parsable format -q, -- quite mode, do not show I/O statistics Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17scsi-disk: support WRITE SAME (16) with unmap bitChristoph Hellwig2-2/+52
Support discards via the WRITE SAME command with the unmap bit set, and tell the initiator about the support for it via the block limit and the new thin provisioning EVPD pages. Also fix the comment which incorrectly describedthe block limits EVPD page. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17block: add discard supportChristoph Hellwig4-1/+24
Add a new bdrv_discard method to free blocks in a mapping image, and a new drive property to set the granularity for these discard. If no discard granularity support is set discard support is disabled. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17ide: Register vm change state handler once onlyStefan Hajnoczi3-28/+58
We register the vm change state handler in a PCI BAR map() function. This function can be called multiple times throughout the lifetime of a PCI IDE device. This results in duplicate vm change state handlers being register, none of which are ever unregistered. Instead, register the vm change state handler in the device's init function once and for all. piix tested, cmd646 and via not tested. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17Remove NULL checks for bdrv_new return valueKevin Wolf4-19/+7
It's an indirect call to qemu_malloc, which never returns an error. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qemu.img.c: Use error_report() instead of own error() implementationJes Sorensen1-65/+62
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17bdrv_img_create() use proper errno return valuesJes Sorensen1-13/+10
Kevin suggested to have bdrv_img_create() return proper -errno values on error. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17Prevent creating an image with the same filename as backing fileJes Sorensen1-4/+11
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17Introduce do_snapshot_blkdev() and monitor command to handle it.Jes Sorensen3-0/+82
The monitor command is: snapshot_blkdev <device> [snapshot-file] [format] Default format is qcow2. For now snapshots without a snapshot-file, eg internal snapshots, are not supported. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qemu-img.c: Re-factor img_create()Jes Sorensen3-106/+147
This patch re-factors img_create() moving the code doing the actual work into block.c where it can be shared with QEMU. This is needed to be able to create images from QEMU to be used for live snapshots. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17qemu-img: Call error_set_prognameKevin Wolf1-0/+3
Call error_set_progname during the qemu-img initialization, so that error messages printed with error_report() use the right prefix. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17ide: honor ncq for atapiAlexander Graf1-0/+6
ATAPI also can do ncq, so let's expose the capability. This patch makes CD-ROM support work on Windows 7 for me. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17ahci: set SATA Mode SelectSebastian Herbszt1-0/+3
Set SATA Mode Select to AHCI in the Address Map Register. Signed-off-by: Sebastian Herbszt <herbszt@gmx.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17config: add ahci for pci capable machinesAlexander Graf1-0/+1
This patch enables AHCI for all machines supporting PCI. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17config: move ide core and pci to pci.makAlexander Graf14-33/+3
Every device that can do PCI should also be able to do IDE. So let's move the IDE definitions over to pci.mak. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17ahci: add ahci emulationAlexander Graf2-0/+1525
This patch adds an emulation layer for an ICH-9 AHCI controller. For now this controller does not do IDE legacy emulation. It is a pure AHCI controller. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17pci: add ich9 pci idAlexander Graf1-0/+1
We need a PCI ID for our new AHCI adapter. I just picked an ICH-9 because that's the one in the Q35 chipset. This patch adds a PCI ID define for an ICH-9 AHCI adapter. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17pci: add storage class for sataAlexander Graf1-0/+1
This patch adds the storage sata class id. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-12-17ide: add ncq identify data for ahci sata drivesRoland Elek2-0/+9
I modified ide_identify() to include the zero-based queue length value in word 75, and set bit 8 in word 76 to signal NCQ support in the identify data for AHCI SATA drives. Signed-off-by: Roland Elek <elek.roland@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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