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2022-10-18scsi: Use device_cold_reset() and bus_cold_reset()Peter Maydell1-1/+1
In the SCSI subsystem we currently use the legacy functions qdev_reset_all() and qbus_reset_all(). These perform a recursive reset, starting from either a qbus or a qdev. However they do not permit any of the devices in the tree to use three-phase reset, because device reset goes through the device_legacy_reset() function that only calls the single DeviceClass::reset method. Switch to using the device_cold_reset() and bus_cold_reset() functions. These also perform a recursive reset, where first the children are reset and then finally the parent, but they use the new (...in 2020...) Resettable mechanism, which supports both the old style single-reset method and also the new 3-phase reset handling. Since no devices attached to SCSI buses currently try to use 3-phase reset, this should be a no-behaviour-change commit which just reduces the use of a deprecated API. Commit created with: sed -i -e 's/qdev_reset_all/device_cold_reset/g;s/qbus_reset_all/bus_cold_reset/g' hw/scsi/*.c Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20221013160623.1296109-2-peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-09-01scsi: Add buf_len parameter to scsi_req_new()John Millikin1-1/+2
When a SCSI command is received from the guest, the CDB length implied by the first byte might exceed the number of bytes the guest sent. In this case scsi_req_new() will read uninitialized data, causing unpredictable behavior. Adds the buf_len parameter to scsi_req_new() and plumbs it through the call stack. Signed-off-by: John Millikin <john@john-millikin.com> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1127 Message-Id: <20220817053458.698416-1-john@john-millikin.com> [Fill in correct length for adapters other than ESP. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-06-28Trivial: 3 char repeat typosDr. David Alan Gilbert1-1/+1
Inspired by Julia Lawall's fixing of Linux kernel comments, I looked at qemu, although I did it manually. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com> Reviewed-by: Klaus Jensen <k.jensen@samsung.com> Message-Id: <20220614104045.85728-2-dgilbert@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-09-30scsi: Replace scsi_bus_new() with scsi_bus_init(), scsi_bus_init_named()Peter Maydell1-2/+1
The function scsi_bus_new() creates a new SCSI bus; callers can either pass in a name argument to specify the name of the new bus, or they can pass in NULL to allow the bus to be given an automatically generated unique name. Almost all callers want to use the autogenerated name; the only exception is the virtio-scsi device. Taking a name argument that should almost always be NULL is an easy-to-misuse API design -- it encourages callers to think perhaps they should pass in some standard name like "scsi" or "scsi-bus". We don't do this anywhere for SCSI, but we do (incorrectly) do it for other bus types such as i2c. The function name also implies that it will return a newly allocated object, when it in fact does in-place allocation. We more commonly name such functions foo_init(), with foo_new() being the allocate-and-return variant. Replace all the scsi_bus_new() callsites with either: * scsi_bus_init() for the usual case where the caller wants an autogenerated bus name * scsi_bus_init_named() for the rare case where the caller needs to specify the bus name and document that for the _named() version it's then the caller's responsibility to think about uniqueness of bus names. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20210923121153.23754-2-peter.maydell@linaro.org
2021-05-02Do not include cpu.h if it's not really necessaryThomas Huth1-1/+0
Stop including cpu.h in files that don't need it. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210416171314.2074665-4-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-02-25scsi: drop 'result' argument from command_complete callbackHannes Reinecke1-6/+6
The command complete callback has a SCSIRequest as the first argument, and the status field of that structure is identical to the 'status' argument. So drop the argument from the callback. Signed-off-by: Hannes Reinecke <hare@suse.de> Message-Id: <20201116184041.60465-3-hare@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-18Use OBJECT_DECLARE_SIMPLE_TYPE when possibleEduardo Habkost1-3/+1
This converts existing DECLARE_INSTANCE_CHECKER usage to OBJECT_DECLARE_SIMPLE_TYPE when possible. $ ./scripts/codeconverter/converter.py -i \ --pattern=AddObjectDeclareSimpleType $(git grep -l '' -- '*.[ch]') Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Paul Durrant <paul@xen.org> Message-Id: <20200916182519.415636-6-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-09Use DECLARE_*CHECKER* macrosEduardo Habkost1-2/+2
Generated using: $ ./scripts/codeconverter/converter.py -i \ --pattern=TypeCheckMacro $(git grep -l '' -- '*.[ch]') Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-12-ehabkost@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-13-ehabkost@redhat.com> Message-Id: <20200831210740.126168-14-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-09Move QOM typedefs and add missing includesEduardo Habkost1-2/+4
Some typedefs and macros are defined after the type check macros. This makes it difficult to automatically replace their definitions with OBJECT_DECLARE_TYPE. Patch generated using: $ ./scripts/codeconverter/converter.py -i \ --pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]') which will split "typdef struct { ... } TypedefName" declarations. Followed by: $ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \ $(git grep -l '' -- '*.[ch]') which will: - move the typedefs and #defines above the type check macros - add missing #include "qom/object.h" lines if necessary Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-9-ehabkost@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200831210740.126168-10-ehabkost@redhat.com> Message-Id: <20200831210740.126168-11-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-08spapr_vscsi: do not allow device hotplugDaniel Henrique Barboza1-0/+3
We do not implement hotplug in the vscsi bus, but we forgot to tell qdev about it. The result is that users are able to hotplug devices in the vscsi bus, the devices appear in qdev, but they aren't usable by the guest OS unless the user reboots it first. Setting qbus hotplug_handler to NULL will tell qdev-monitor, via qbus_is_hotpluggable(), that we do not support hotplug operations in spapr_vscsi. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1862059 Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20200820190635.379657-1-danielhb413@gmail.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-06-15qdev: Convert uses of qdev_create() with CoccinelleMarkus Armbruster1-2/+2
This is the transformation explained in the commit before previous. Takes care of just one pattern that needs conversion. More to come in this series. Coccinelle script: @ depends on !(file in "hw/arm/highbank.c")@ expression bus, type_name, dev, expr; @@ - dev = qdev_create(bus, type_name); + dev = qdev_new(type_name); ... when != dev = expr - qdev_init_nofail(dev); + qdev_realize_and_unref(dev, bus, &error_fatal); @@ expression bus, type_name, dev, expr; identifier DOWN; @@ - dev = DOWN(qdev_create(bus, type_name)); + dev = DOWN(qdev_new(type_name)); ... when != dev = expr - qdev_init_nofail(DEVICE(dev)); + qdev_realize_and_unref(DEVICE(dev), bus, &error_fatal); @@ expression bus, type_name, expr; identifier dev; @@ - DeviceState *dev = qdev_create(bus, type_name); + DeviceState *dev = qdev_new(type_name); ... when != dev = expr - qdev_init_nofail(dev); + qdev_realize_and_unref(dev, bus, &error_fatal); @@ expression bus, type_name, dev, expr, errp; symbol true; @@ - dev = qdev_create(bus, type_name); + dev = qdev_new(type_name); ... when != dev = expr - object_property_set_bool(OBJECT(dev), true, "realized", errp); + qdev_realize_and_unref(dev, bus, errp); @@ expression bus, type_name, expr, errp; identifier dev; symbol true; @@ - DeviceState *dev = qdev_create(bus, type_name); + DeviceState *dev = qdev_new(type_name); ... when != dev = expr - object_property_set_bool(OBJECT(dev), true, "realized", errp); + qdev_realize_and_unref(dev, bus, errp); The first rule exempts hw/arm/highbank.c, because it matches along two control flow paths there, with different @type_name. Covered by the next commit's manual conversions. Missing #include "qapi/error.h" added manually. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200610053247.1583243-10-armbru@redhat.com> [Conflicts in hw/misc/empty_slot.c and hw/sparc/leon3.c resolved]
2020-03-17hw/scsi/spapr_vscsi: Convert debug fprintf() to trace eventPhilippe Mathieu-Daudé1-3/+1
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200305121253.19078-8-philmd@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-03-17hw/scsi/spapr_vscsi: Prevent buffer overflowPhilippe Mathieu-Daudé1-3/+10
Depending on the length of sense data, vscsi_send_rsp() can overrun the buffer size. Do not copy more than SRP_MAX_IU_DATA_LEN bytes, and assert that vscsi_send_iu() is always called with a size in range. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200305121253.19078-7-philmd@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-03-17hw/scsi/spapr_vscsi: Do not mix SRP IU size with DMA buffer sizePhilippe Mathieu-Daudé1-5/+5
The 'union srp_iu' is meant as a pointer to any SRP Information Unit type, it is not related to the size of a VIO DMA buffer. Use a plain buffer for the VIO DMA read/write calls. We can remove the reserved buffer from the 'union srp_iu'. This issue was noticed when replacing the zero-length arrays from hw/scsi/srp.h with flexible array member, 'clang -fsanitize=undefined' reported: hw/scsi/spapr_vscsi.c:69:29: error: field 'iu' with variable sized type 'union viosrp_iu' not at the end of a struct or class is a GNU extension [-Werror,-Wgnu-variable-sized-type-not-at-end] union viosrp_iu iu; ^ Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200305121253.19078-6-philmd@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-03-17hw/scsi/spapr_vscsi: Introduce req_iu() helperPhilippe Mathieu-Daudé1-16/+23
Introduce the req_iu() helper which returns a pointer to the viosrp_iu union held in the vscsi_req structure. This simplifies the next patch. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200305121253.19078-5-philmd@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-03-17hw/scsi/spapr_vscsi: Simplify a bitPhilippe Mathieu-Daudé1-3/+3
We already have a 'iu' pointer, use it (this simplifies the next commit). Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200305121253.19078-4-philmd@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-03-17hw/scsi/spapr_vscsi: Use SRP_MAX_IU_LEN instead of sizeof flexible arrayPhilippe Mathieu-Daudé1-3/+3
Replace sizeof() flexible arrays union srp_iu/viosrp_iu by the SRP_MAX_IU_LEN definition, which is what this code actually meant to use. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200305121253.19078-3-philmd@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-01-24qdev: set properties with device_class_set_props()Marc-André Lureau1-1/+1
The following patch will need to handle properties registration during class_init time. Let's use a device_class_set_props() setter. spatch --macro-file scripts/cocci-macro-file.h --sp-file ./scripts/coccinelle/qdev-set-props.cocci --keep-comments --in-place --dir . @@ typedef DeviceClass; DeviceClass *d; expression val; @@ - d->props = val + device_class_set_props(d, val) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200110153039.1379601-20-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-08-16Include hw/qdev-properties.h lessMarkus Armbruster1-1/+1
In my "build everything" tree, changing hw/qdev-properties.h triggers a recompile of some 2700 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). Many places including hw/qdev-properties.h (directly or via hw/qdev.h) actually need only hw/qdev-core.h. Include hw/qdev-core.h there instead. hw/qdev.h is actually pointless: all it does is include hw/qdev-core.h and hw/qdev-properties.h, which in turn includes hw/qdev-core.h. Replace the remaining uses of hw/qdev.h by hw/qdev-properties.h. While there, delete a few superfluous inclusions of hw/qdev-core.h. Touching hw/qdev-properties.h now recompiles some 1200 objects. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Daniel P. Berrangé" <berrange@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20190812052359.30071-22-armbru@redhat.com>
2019-08-16Include hw/hw.h exactly where neededMarkus Armbruster1-1/+0
In my "build everything" tree, changing hw/hw.h triggers a recompile of some 2600 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). The previous commits have left only the declaration of hw_error() in hw/hw.h. This permits dropping most of its inclusions. Touching it now recompiles less than 200 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20190812052359.30071-19-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-08-16Include migration/vmstate.h lessMarkus Armbruster1-0/+1
In my "build everything" tree, changing migration/vmstate.h triggers a recompile of some 2700 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). hw/hw.h supposedly includes it for convenience. Several other headers include it just to get VMStateDescription. The previous commit made that unnecessary. Include migration/vmstate.h only where it's still needed. Touching it now recompiles only some 1600 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20190812052359.30071-16-armbru@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-06-12Include qemu/module.h where needed, drop it from qemu-common.hMarkus Armbruster1-1/+2
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-4-armbru@redhat.com> [Rebased with conflicts resolved automatically, except for hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c; ui/cocoa.m fixed up]
2019-03-12spapr: Use CamelCase properlyDavid Gibson1-7/+7
The qemu coding standard is to use CamelCase for type and structure names, and the pseries code follows that... sort of. There are quite a lot of places where we bend the rules in order to preserve the capitalization of internal acronyms like "PHB", "TCE", "DIMM" and most commonly "sPAPR". That was a bad idea - it frequently leads to names ending up with hard to read clusters of capital letters, and means they don't catch the eye as type identifiers, which is kind of the point of the CamelCase convention in the first place. In short, keeping type identifiers look like CamelCase is more important than preserving standard capitalization of internal "words". So, this patch renames a heap of spapr internal type names to a more standard CamelCase. In addition to case changes, we also make some other identifier renames: VIOsPAPR* -> SpaprVio* The reverse word ordering was only ever used to mitigate the capital cluster, so revert to the natural ordering. VIOsPAPRVTYDevice -> SpaprVioVty VIOsPAPRVLANDevice -> SpaprVioVlan Brevity, since the "Device" didn't add useful information sPAPRDRConnector -> SpaprDrc sPAPRDRConnectorClass -> SpaprDrcClass Brevity, and makes it clearer this is the same thing as a "DRC" mentioned in many other places in the code This is 100% a mechanical search-and-replace patch. It will, however, conflict with essentially any and all outstanding patches touching the spapr code. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-03-06scsi: Remove automatic creation of SCSI controllers with -drive if=scsiThomas Huth1-2/+1
Automatic creation of SCSI controllers for "-drive if=scsi" for x86 machines was quite a bad idea (see description of commit f778a82f0c179 for details). This is marked as deprecated since QEMU v2.9.0, and as far as I know, nobody complained that this is still urgently required anymore. Time to remove this now. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1519123357-13225-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-19scsi: move block/scsi.h to include/scsi/constants.hPaolo Bonzini1-1/+1
Complete the transition by renaming this header, which was shared by block/iscsi.c and the SCSI emulation code. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-02-21hw: Deprecate -drive if=scsi with non-onboard HBAsMarkus Armbruster1-0/+2
Block backends defined with "-drive if=T" with T other than "none" are meant to be picked up by machine initialization code: a suitable frontend gets created and wired up automatically. Drives defined with if=scsi are also picked up by SCSI HBAs added with -device, unlike other interface types. Deprecate this usage, as follows. Create the frontends for onboard HBAs in machine initialization code, exactly like we do for if=ide and other interface types. Change scsi_legacy_handle_cmdline() to create a frontend only when it's still missing, and warn that this usage is deprecated. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1487161136-9018-3-git-send-email-armbru@redhat.com>
2017-02-21hw/scsi: Concentrate -drive if=scsi auto-create in one placeMarkus Armbruster1-3/+0
The logic to create frontends for -drive if=scsi is in SCSI HBAs. For all other interface types, it's in machine initialization code. A few machine types create the SCSI HBAs necessary for that. That's also not done for other interface types. I'm going to deprecate these SCSI eccentricities. In preparation for that, create the frontends in main() instead of the SCSI HBAs, by calling new function scsi_legacy_handle_cmdline() there. Note that not all SCSI HBAs create frontends. Take care not to change that. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1487161136-9018-2-git-send-email-armbru@redhat.com> Acked-By: Paolo Bonzini <pbonzini@redhat.com>
2016-10-05spapr_vscsi: fix build error introduced by f19661c8Felipe Franciosi1-1/+1
A typo introduced in f19661c8 prevents qemu from building when configured with --enable-trace-backend=dtrace. Signed-off-by: Felipe Franciosi <felipe@nutanix.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-09-23spapr_vscsi: convert to trace framework instead of DPRINTFLaurent Vivier1-52/+36
Signed-off-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-05-18Fix some typos found by codespellStefan Weil1-1/+1
Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-03-22hw: explicitly include qemu-common.h and cpu.hPaolo Bonzini1-0/+2
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-29ppc: Clean up includesPeter Maydell1-0/+1
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-6-git-send-email-peter.maydell@linaro.org
2015-10-23hw/scsi/spapr_vscsi: Remove superfluous memsetThomas Huth1-1/+0
g_malloc0 already clears the memory, so no need for the additional memset here. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2015-03-09spapr_vio: Convert to realize()Markus Armbruster1-10/+3
Bonus fix: always set an error on failure. Some failures were silent before, except for the generic error set by device_realize(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-02-05migration: Append JSON description of migration streamAlexander Graf1-1/+1
One of the annoyances of the current migration format is the fact that it's not self-describing. In fact, it's not properly describing at all. Some code randomly scattered throughout QEMU elaborates roughly how to read and write a stream of bytes. We discussed an idea during KVM Forum 2013 to add a JSON description of the migration protocol itself to the migration stream. This patch adds a section after the VM_END migration end marker that contains description data on what the device sections of the stream are composed of. This approach is backwards compatible with any QEMU version reading the stream, because QEMU just stops reading after the VM_END marker and ignores any data following it. With an additional external program this allows us to decipher the contents of any migration stream and hopefully make migration bugs easier to track down. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2014-09-30scsi: Drop scsi_req_abortFam Zheng1-3/+10
The only user of this function is spapr_vscsi.c. We can convert to scsi_req_cancel plus adding a check in vscsi_request_cancelled. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com> [Drop prototype. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18scsi: Print command name in debugAlexey Kardashevskiy1-2/+3
This makes scsi_command_name() public. This makes use of scsi_command_name() in debug output for scsi-disk and spapr-vscsi host bus adapter. Before this, SCSI used to print hex numbers instead of human-friendly strings. This adds GET_EVENT_STATUS_NOTIFICATION and READ_DISC_INFORMATION to the list of SCSI commands supported by scsi_command_name(). Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-16savevm: Remove all the unneeded version_minimum_id_old (ppc)Juan Quintela1-4/+2
After previous Peter patch, they are redundant. This way we don't assign them except when needed. Once there, there were lots of case where the ".fields" indentation was wrong: .fields = (VMStateField []) { and .fields = (VMStateField []) { Change all the combinations to: .fields = (VMStateField[]){ The biggest problem (appart from aesthetics) was that checkpatch complained when we copy&pasted the code from one place to another. Signed-off-by: Juan Quintela <quintela@redhat.com> Acked-by: Alexey Kardashevskiy <aik@ozlabs.ru>
2014-03-26spapr_vscsi: remove duplicate condition checkPrasad Joshi1-1/+1
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-03-14spapr-vscsi: fix CRQ statusAlexey Kardashevskiy1-2/+2
Normally VIOSRP_OK (0) means success and non-zero value means error except VIOSRP_OK2 (0x99) which is another success code by weird accident. This uses 0 as success code always as some guests do not cope with the 0x99 value well. The existing linux driver checks for both VIOSRP_OK and VIOSRP_OK2 since 2.6.32. This returns non-zero code (VIOSRP_ADAPTER_FAIL == 0x10) on errors which can only happen if DMA write failed. Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-03-05spapr_vscsi: Fix REPORT_LUNS handlingNathan Whitehorn1-0/+60
Intercept REPORT_LUNS commands addressed either to SRP LUN 0 or the well-known LUN for REPORT_LUNS commands. This is required to implement the SAM and SPC specifications. Since SRP implements only a single SCSI target port per connection, the SRP target is required to report all available LUNs in response to a REPORT_LUNS command addressed either to LUN 0 or the well-known LUN. Instead, QEMU was forwarding such requests to the first QEMU SCSI target, with the result that initiators that relied on this feature would only see LUNs on the first QEMU SCSI target. Behavior for REPORT_LUNS commands addressed to any other LUN is not specified by the standard and so is left unchanged. This preserves behavior under Linux and SLOF, which enumerate possible LUNs by hand and so address no commands either to LUN 0 or the well-known REPORT_LUNS LUN. Signed-off-by: Nathan Whitehorn <nwhitehorn@freebsd.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com> [agraf: define constant as ULL for 32bit hosts] Signed-off-by: Alexander Graf <agraf@suse.de>
2014-02-22scsi: Change scsi sense buf size to 252Fam Zheng1-1/+0
Current buffer size fails the assersion check in like hw/scsi/scsi-bus.c:1655: assert(req->sense_len <= sizeof(req->sense)); when backend (block/iscsi.c) returns more data then 96. Exercise the core dump path by booting an Gentoo ISO with scsi-generic device backed with iscsi (built with libiscsi 1.7.0): x86_64-softmmu/qemu-system-x86_64 \ -drive file=iscsi://localhost:3260/iqn.foobar/0,if=none,id=drive-disk \ -device virtio-scsi-pci,id=scsi1,bus=pci.0,addr=0x6 \ -device scsi-generic,drive=drive-disk,bus=scsi1.0,id=iscsi-disk \ -boot d \ -cdrom gentoo.iso qemu-system-x86_64: hw/scsi/scsi-bus.c:1655: scsi_req_complete: Assertion `req->sense_len <= sizeof(req->sense)' failed. According to SPC-4, section 4.5.2.1, 252 is the limit of sense data. So increase the value to fix it. Also remove duplicated define for the macro. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-11-08spapr: add vio-bus devices to categoriesAlexey Kardashevskiy1-0/+1
In order to get devices appear in output of "./qemu-system-ppc64 -device ?", they must be assigned to one of DEVICE_CATEGORY_XXXX. This puts VIO devices classes to corresponding categories. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-09-12spapr-vscsi: Report error on unsupported MAD requestsAlexey Kardashevskiy1-4/+18
The existing driver just dropped unsupported requests. This adds error responses to those unhandled requests. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-09-12spapr-vscsi: Adding VSCSI capabilitiesNikunj A. Dadhania1-0/+54
This implements capabilities exchange between vscsi host and client. As at the moment no capability is supported, put zero flags everywhere and return. Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
2013-09-12spapr-vscsi: add task managementAlexey Kardashevskiy1-27/+92
At the moment the guest kernel issues two types of task management requests to the hypervisor - task about and lun reset. This adds handling for these tasks. As spapr-vscsi starts calling scsi_req_cancel(), free_request callback was implemented. As virtio-vscsi, spapr-vscsi does not handle CLEAR_ACA either as CDB control byte does not seem to be used at all so NACA bit is not set to the guest so the guest has no good reason to call CLEAR_ACA task. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> [Fix choice of UCSOLCNT vs. SCSOLCNT. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-08-30scsi: Pass size to scsi_bus_new()Andreas Färber1-1/+2
To be passed to qbus_create_inplace(). Use DEVICE() casts instead of direct parent field access. Reviewed-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-29spapr: Rename 'dprintf' to 'DPRINTF'Peter Maydell1-28/+29
'dprintf' is the name of a POSIX standard function so we should not be stealing it for our debug macro. Rename to 'DPRINTF' (in line with a number of other source files.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Acked-by: Richard Henderson <rth@twiddle.net> Acked-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1375100199-13934-5-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29spapr-vscsi: fix SOLNT bit in SRP_RSPAlexey Kardashevskiy1-2/+3
The driver calculates SOLNT bit from UCSOLNT and SCSOLNT bits from the request. The iu pointer has a type of srp_iu* which points to a union, so cmd and rsp overlap. As the vscsi_send_rsp function calls memset(iu, 0, sizeof(rsp)), it clears first 36 bytes of both cmd and rsp so cmd.sol_not is always zero at the moment of calculating rsp.sol_not. This fixes the bug. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-id: 1375073319-17488-1-git-send-email-aik@ozlabs.ru Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-29pseries: savevm support for PAPR virtual SCSIDavid Gibson1-1/+81
This patch adds the necessary support for saving the state of the PAPR VIO virtual SCSI device. This also saves and restores active SCSI requests. [aik: implemented vscsi_req save/restore] Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-id: 1374175984-8930-8-git-send-email-aliguori@us.ibm.com Cc: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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