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2011-08-20Use glib memory allocation and free functionsAnthony Liguori1-10/+10
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-11hw/qdev: Don't crash if qdev_create(NULL, ...) failsPeter Maydell1-1/+6
If an attempt to create a qdev device on the default sysbus (by passing NULL as the bus to qdev_create) fails, print a useful error message rather than crashing trying to dereference a NULL pointer. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-05qdev: Eliminate duplicate resetIsaku Yamahata1-2/+12
qbus_reset_all_fn was registered twice, so a lot of device reset functions were also called twice when QEMU started. Which was introduced by 80376c3fc2c38fdd45354e4b0eb45031f35587ed This patch fixes it by making the main_system_bus creation not register reset handler. Cc: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Tested-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29qdev: Reset hot-plugged devicesJan Kiszka1-0/+3
Device models rely on the core invoking their reset handlers after init. We do this in the cold-plug case, but so far we miss this step after hot-plug. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-23net: Consistently use qemu_macaddr_default_if_unsetJan Kiszka1-1/+1
Drop the open-coded MAC assignment from net_init_nic and replace it with standard qemu_macaddr_default_if_unset which is also used by qdev. That avoid creating colliding MACs when instantiating NICs via different mechanisms. This change requires to store the MAC as MACAddr in NICInfo, and the remaining nd_table users need to be updated. Based on suggestion by Peter Maydell. CC: Markus Armbruster <armbru@redhat.com> CC: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-06-24Strip trailing '\n' from error_report()'s first argumentMarkus Armbruster1-1/+1
error_report() prepends location, and appends a newline. The message constructed from the arguments should not contain a newline. Fix the obvious offenders. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-22net: Warn about "-net nic" options which were ignoredPeter Maydell1-0/+1
Diagnose the case where the user asked for a NIC via "-net nic" but the board didn't instantiate that NIC (for example where the user asked for two NICs but the board only supports one). Note that this diagnostic doesn't apply to NICs created through -device, because those are always instantiated. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-04-07qdev: Fix comment around qdev_init_nofail()Michael Tokarev1-1/+2
In previous life qdev_init_nofail() used to call hw_error() which did register dump and other scary things. Now it calls error_report() and does a regular exit(1). Fix the comment to match reality. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-02-12qdev: add creation function that may failBlue Swirl1-1/+13
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-31blockdev: Fix regression in -drive if=scsi,index=NMarkus Armbruster1-1/+0
Before commit 622b520f, index=12 meant bus=1,unit=5. Since the commit, it means bus=0,unit=12. The drive is created, but not the guest device. That's because the controllers we use with if=scsi drives (lsi53c895a and esp) support only 7 units, and scsi_bus_legacy_handle_cmdline() ignores drives with unit numbers exceeding that limit. Changing the mapping of index to bus, unit is a regression. Breaking -drive invocations that used to work just makes it worse. Revert the part of commit 622b520f that causes this, and clean up some. Note that the fix only affects if=scsi. You can still put more than 7 units on a SCSI bus with -device & friends. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-01-31blockdev: New drive_get_next(), replacing qdev_init_bdrv()Markus Armbruster1-14/+0
qdev_init_bdrv() doesn't belong into qdev.c; it's about drives, not qdevs. Rename to drive_get_next, move to blockdev.c, drop the bogus DeviceState argument, and return DriveInfo instead of BlockDriverState. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-01-05qdev: Track runtime machine modificationsAlex Williamson1-0/+10
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>
2010-12-24qdev: export qdev_find_recursive() for later useIsaku Yamahata1-1/+1
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>
2010-12-21qdev: remove an unused functionMichael S. Tsirkin1-6/+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 Yamahata1-1/+13
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>
2010-12-11Add bootindex parameter to net/block/fd deviceGleb Natapov1-0/+32
If bootindex is specified on command line a string that describes device in firmware readable way is added into sorted list. Later this list will be passed into firmware to control boot order. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-11-22qdev: trigger reset from a given deviceIsaku Yamahata1-0/+5
Introduce a helper function which triggers reset from a given device. Will be used by pci bus emulation. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-22qdev: introduce reset call back for qbus levelIsaku Yamahata1-1/+9
and make it called via qbus_reset_all(). The qbus reset callback will be used by pci bus reset. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-22qdev: reset qdev along with qdev treeAnthony Liguori1-9/+19
This patch changes the reset handling so that qdev has no knowledge of the global system reset. Instead, a new bus/device level function is introduced that allows all devices/buses on the bus/device to be reset using a depth first transversal. N.B. we have to expose the implicit system bus because we have various hacks that result in an implicit system bus existing. Instead, we ought to have an explicitly created system bus that we can trigger reset from. That's a topic for a future patch though. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-22qbus: add functions to walk both devices and bussesAnthony Liguori1-0/+46
There are some cases where you want to walk the busses, in particular, when searching for a bus either by name or DeviceInfo. Paolo suggested that we model the return values on how GCC's walkers work which allows an actor to skip child transversal, or terminate walking with a positive value that's returned as the qbus_walk_children's result. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-08-24Rearrange block headersBlue Swirl1-0/+1
Changing block.h or blockdev.h resulted in recompiling most objects. Move DriveInfo typedef and BlockInterfaceType enum definitions to qemu-common.h and rearrange blockdev.h use to decrease churn. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-08-22QemuOpts: make most qemu_*_opts staticGerd Hoffmann1-1/+1
Switch tree to lookup-by-name using qemu_find_opts(). Also hook up virtfs options so qemu_find_opts works for them too. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-07-06Merge remote branch 'kwolf/for-anthony' into stagingAnthony Liguori1-2/+4
2010-07-06savevm: Add DeviceState paramAlex Williamson1-2/+2
When available, we'd like to be able to access the DeviceState when registering a savevm. For buses with a get_dev_path() function, this will allow us to create more unique savevm id strings. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-07-06qdev: Don't hw_error() in qdev_init_nofail()Markus Armbruster1-2/+4
Some of the failures are internal errors, and hw_error() is okay then. But the common way to fail is bad user input, e.g. -global isa-fdc.driveA=foo where drive foo has an unsupported rerror value. exit(1) instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-06-14Merge remote branch 'kwolf/for-anthony' into stagingAnthony Liguori1-0/+6
Conflicts: hw/pc.c
2010-06-10qbus: fix memory leak in qbus_free()Isaku Yamahata1-0/+1
BusState::name is allocated in qbus_create_inplace(). So it should be freed by qbus_free(). Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-06-04qdev: Don't leak string property value on hot unplugMarkus Armbruster1-0/+6
parse_string() qemu_strdup()s the property value. It is never freed. It needs to be freed along with the device. Otherwise, the value of scsi-disk property "ver" gets leaked when hot-unplugging the disk, for instance. Call new PropertyInfo method free() from qdev_free(). Implement it for qdev_prop_string. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-06-01Monitor: Drop QMP documentation from codeLuiz Capitulino1-13/+0
Previous commit added QMP documentation to the qemu-monitor.hx file, it's is a copy of this information. While it's good to keep it near code, maintaining two copies of the same information is too hard and has little benefit as we don't expect client writers to consult the code to find how to use a QMP command. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-15vmstate: Add support for alias IDJan Kiszka1-2/+14
Some legacy users (mostly PC devices) of vmstate_register manage instance IDs on their own, and that unfortunately in a way that is incompatible with automatically generated ones. This so far prevents switching those users to vmstates that are registered by qdev. To establish a migration path, this patch introduces the concept of alias IDs. They can be passed to an extended vmstate registration service, and qdev provides a set service to be used during device init. find_se will consider the alias in addition to the default ID. We can then start generating the default ID automatically and writing it on vmsave, thus converting that format without breaking support for upward migration. The user is required specify the highest vmstate version for which the alias is required. Once this version falls behind the minimum required for a specific vmstate, an assertion triggers to motivate cleaning up the obsolete alias. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-18error: Use QERR_INVALID_PARAMETER_VALUE instead of QERR_INVALID_PARAMETERMarkus Armbruster1-1/+1
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-18monitor: convert do_device_del() to QObject, QErrorMarkus Armbruster1-4/+4
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-18qdev: Convert qdev_unplug() to QErrorMarkus Armbruster1-2/+1
Note: our device unplug methods don't need conversion work, because they can't currently fail. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-03-16monitor: convert do_device_add() to QObjectMarkus Armbruster1-8/+34
2010-03-16monitor: Use argument type 'O' for device_addMarkus Armbruster1-2/+1
While there, improve the params help text.
2010-03-16qemu-option: Move the implied first name into QemuOptsListMarkus Armbruster1-1/+1
We sometimes permit omitting the first option name, for example -device foo is short for -device driver=foo. The name to use ("driver" in the example) is passed as argument to qemu_opts_parse(). For each QemuOptsList, we use at most one such name. Move the name into QemuOptsList, and pass whether to permit the abbreviation. This ensures continued consistency, and simplifies the commit after next in this series.
2010-03-16error: Convert do_device_add() to QErrorMarkus Armbruster1-10/+9
Conversion to QObject is still missing.
2010-03-16Revert "qdev: Use QError for 'device not found' error"Markus Armbruster1-2/+2
This reverts commit 3ced9f7a36189aed94d8bf86f3f5087a53012455. The next commit will convert all of qdev_device_add() to QError, and it'll be clearer with this partial conversion reverted.
2010-03-16qdev: Convert qbus_find() to QErrorMarkus Armbruster1-11/+14
2010-03-16qdev: Relax parsing of bus optionMarkus Armbruster1-9/+17
Treat multiple successive slashes as a one slash. Ignore trailing slashes. This is how POSIX pathnames work.
2010-03-16qdev: convert setting device properties to QErrorMarkus Armbruster1-2/+0
2010-03-16qdev: Hide "ptr" properties from usersMarkus Armbruster1-0/+15
Users can't set them, so qdev_device_help() shouldn't list them. Fix that. Also make qdev_prop_parse() hide them instead of printing a meaningless "has no parser" error message. Their value means nothing to users, so qdev_print_props() shouldn't print it. Fix by removing their print method. Their only use is dirty hacks. Document that.
2010-03-16qdev: Hide "no_user" devices from usersMarkus Armbruster1-6/+4
Users can't create them, so qdev_device_help() shouldn't list them. Fix that. Also make qdev_device_add() pretend they don't exist. Before, it rejected them with a "can't be added via command line" message, which wasn't quite right for monitor command device_add.
2010-03-16qdev: Factor qdev_create_from_info() out of qdev_create()Markus Armbruster1-15/+22
To make it obvious that -device and device_add can't die in hw_error().
2010-03-16qdev: Fix -device and device_add to handle unsuitable bus gracefullyMarkus Armbruster1-0/+5
"device_add isa-serial,bus=pci.0" kills QEMU. Not good.
2010-03-16error: Rename qemu_error_new() to qerror_report()Markus Armbruster1-1/+1
2010-03-16error: Replace qemu_error() by error_report()Markus Armbruster1-21/+21
error_report() terminates the message with a newline. Strip it it from its arguments. This fixes a few error messages lacking a newline: net_handle_fd_param()'s "No file descriptor named %s found", and tap_open()'s "vnet_hdr=1 requested, but no kernel support for IFF_VNET_HDR available" (all three versions). There's one place that passes arguments without newlines intentionally: load_vmstate(). Fix it up.
2010-03-16error: Don't abuse qemu_error() for non-error in qbus_find()Markus Armbruster1-20/+17
qbus_find() adds an informational line to error messages, and prints both lines with one qemu_error(). Use error_printf() for the informational line instead. While there, simplify: instead of printing buffers filled by qbus_list_bus() and qbus_list_dev() in one go, make them print it.
2010-03-16error: Don't abuse qemu_error() for non-error in qdev_device_help()Markus Armbruster1-21/+10
qdev_device_help() prints device information with qemu_error(). A later commit will make qemu_error() print additional stuff that is only appropriate for proper errors, and then this will break. Use error_printf() instead. While there, simplify: instead of printing a buffer filled by qdev_print_devinfo() in one go, make qdev_print_devinfo() print it.
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