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It is currently not possible to perform a strict boot from USB storage:
$ qemu-system-ppc64 -accel kvm -nodefaults -nographic -serial stdio \
-boot strict=on \
-device qemu-xhci \
-device usb-storage,drive=disk,bootindex=0 \
-blockdev driver=file,node-name=disk,filename=fedora-ppc64le.qcow2
SLOF **********************************************************************
QEMU Starting
Build Date = Jul 17 2020 11:15:24
FW Version = git-e18ddad8516ff2cf
Press "s" to enter Open Firmware.
Populating /vdevice methods
Populating /vdevice/vty@71000000
Populating /vdevice/nvram@71000001
Populating /pci@800000020000000
00 0000 (D) : 1b36 000d serial bus [ usb-xhci ]
No NVRAM common partition, re-initializing...
Scanning USB
XHCI: Initializing
USB Storage
SCSI: Looking for devices
101000000000000 DISK : "QEMU QEMU HARDDISK 2.5+"
Using default console: /vdevice/vty@71000000
Welcome to Open Firmware
Copyright (c) 2004, 2017 IBM Corporation All rights reserved.
This program and the accompanying materials are made available
under the terms of the BSD License available at
http://www.opensource.org/licenses/bsd-license.php
Trying to load: from: /pci@800000020000000/usb@0/storage@1/disk@101000000000000 ...
E3405: No such device
E3407: Load failed
Type 'boot' and press return to continue booting the system.
Type 'reset-all' and press return to reboot the system.
Ready!
0 >
The device tree handed over by QEMU to SLOF indeed contains:
qemu,boot-list =
"/pci@800000020000000/usb@0/storage@1/disk@101000000000000 HALT";
but the device node is named usb-xhci@0, not usb@0.
This happens because the firmware names of PCI devices returned
by get_boot_devices_list() come from pcibus_get_fw_dev_path(),
while the sPAPR PHB code uses a different naming scheme for
device nodes. This inconsistency has always been there but it was
hidden for a long time because SLOF used to rename USB device
nodes, until this commit, merged in QEMU 4.2.0 :
commit 85164ad4ed9960cac842fa4cc067c6b6699b0994
Author: Alexey Kardashevskiy <aik@ozlabs.ru>
Date: Wed Sep 11 16:24:32 2019 +1000
pseries: Update SLOF firmware image
This fixes USB host bus adapter name in the device tree to match QEMU's
one.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Fortunately, sPAPR implements the firmware path provider interface.
This provides a way to override the default firmware paths.
Just factor out the sPAPR PHB naming logic from spapr_dt_pci_device()
to a helper, and use it in the sPAPR firmware path provider hook.
Fixes: 85164ad4ed99 ("pseries: Update SLOF firmware image")
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210122170157.246374-1-groug@kaod.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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In the CPU hotunplug bug [1] the guest kernel throws a scary
message in dmesg:
pseries-hotplug-cpu: Failed to offline CPU <NULL>, rc: -16
The reason isn't related to the bug though. This happens because the
kernel file arch/powerpc/platform/pseries/hotplug-cpu.c, function
dlpar_cpu_remove(), is not finding the device_node.name of the offending
CPU.
We're not populating the 'name' property for hotplugged CPUs. Since the
kernel relies on device_node.name for identifying CPU nodes, and the
CPUs that are coldplugged has the 'name' property filled by SLOF, this
is creating an unneeded inconsistency between hotplug and coldplug CPUs
in the kernel.
Let's fill the 'name' property for hotplugged CPUs as well. This will
make the guest dmesg throws a less intimidating message when we try to
unplug the last online CPU:
pseries-hotplug-cpu: Failed to offline CPU PowerPC,POWER9@1, rc: -16
[1] https://bugzilla.redhat.com/1911414
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210120232305.241521-3-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Next patch will use the 'nodename' string in spapr_core_dt_populate()
after the point it's being freed today.
Instead of moving 'g_free(nodename)' around, let's do a QoL change in
both CPU DT functions where 'nodename' is being freed, and use
g_autofree to avoid the 'g_free()' call altogether.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210120232305.241521-2-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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staging
Emulated NVMe device updates
* deallocate or unwritten logical block error feature (me)
* dataset management command (me)
* compare command (Gollu Appalanaidu)
* namespace types (Niklas Cassel)
* zoned namespaces (Dmitry Fomichev)
* smart critical warning toggle (Zhenwei Pi)
* allow cmb and pmr to coexist (me)
* pmr rds/wds support (Naveen Nagar)
* cmb v1.4 logic (Padmakar Kalghatgi)
And a lot of smaller fixes from Gollu Appalanaidu and Minwoo Im.
# gpg: Signature made Tue 09 Feb 2021 07:25:18 GMT
# gpg: using RSA key 522833AA75E2DCE6A24766C04DE1AF316D4F0DE9
# gpg: Good signature from "Klaus Jensen <its@irrelevant.dk>" [unknown]
# gpg: aka "Klaus Jensen <k.jensen@samsung.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: DDCA 4D9C 9EF9 31CC 3468 4272 63D5 6FC5 E55D A838
# Subkey fingerprint: 5228 33AA 75E2 DCE6 A247 66C0 4DE1 AF31 6D4F 0DE9
* remotes/nvme/tags/nvme-next-pull-request: (56 commits)
hw/block/nvme: refactor the logic for zone write checks
hw/block/nvme: fix zone boundary check for append
hw/block/nvme: fix wrong parameter name 'cross_read'
hw/block/nvme: align with existing style
hw/block/nvme: fix set feature save field check
hw/block/nvme: fix set feature for error recovery
hw/block/nvme: error if drive less than a zone size
hw/block/nvme: lift cmb restrictions
hw/block/nvme: bump to v1.4
hw/block/nvme: move cmb logic to v1.4
hw/block/nvme: add PMR RDS/WDS support
hw/block/nvme: disable PMR at boot up
hw/block/nvme: remove redundant zeroing of PMR registers
hw/block/nvme: rename PMR/CMB shift/mask fields
hw/block/nvme: allow cmb and pmr to coexist
hw/block/nvme: move msix table and pba to BAR 0
hw/block/nvme: indicate CMB support through controller capabilities register
hw/block/nvme: fix 64 bit register hi/lo split writes
hw/block/nvme: add size to mmio read/write trace events
hw/block/nvme: trigger async event during injecting smart warning
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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staging
* Fuzzing improvements (Qiuhao, Alexander)
* i386: Fix BMI decoding for instructions with the 0x66 prefix (David)
* initial attempt at fixing event_notifier emulation (Maxim)
* i386: PKS emulation, fix for "qemu-system-i386 -cpu host" (myself)
* meson: RBD test fixes (myself)
* meson: TCI warnings (Philippe)
* Leaner build for --disable-guest-agent, --disable-system and
--disable-tools (Philippe, Stefan)
* --enable-tcg-interpreter fix (Richard)
* i386: SVM feature bits (Wei)
* KVM bugfix (Thomas H.)
* Add missing MemoryRegionOps callbacks (PJP)
# gpg: Signature made Mon 08 Feb 2021 14:15:35 GMT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini-gitlab/tags/for-upstream: (46 commits)
target/i386: Expose VMX entry/exit load pkrs control bits
target/i386: Add support for save/load IA32_PKRS MSR
imx7-ccm: add digprog mmio write method
tz-ppc: add dummy read/write methods
spapr_pci: add spapr msi read method
nvram: add nrf51_soc flash read method
prep: add ppc-parity write method
vfio: add quirk device write method
pci-host: designware: add pcie-msi read method
hw/pci-host: add pci-intack write method
cpu-throttle: Remove timer_mod() from cpu_throttle_set()
replay: rng-builtin support
pc-bios/descriptors: fix paths in json files
replay: fix replay of the interrupts
accel/kvm/kvm-all: Fix wrong return code handling in dirty log code
qapi/meson: Restrict UI module to system emulation and tools
qapi/meson: Restrict system-mode specific modules
qapi/meson: Remove QMP from user-mode emulation
qapi/meson: Restrict qdev code to system-mode emulation
meson: Restrict emulation code
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Refactor the zone write check logic such that the most "meaningful"
error is returned first. That is, first, if the zone is not writable,
return an appropriate status code for that. Then, make sure we are
actually writing at the write pointer and finally check that we do not
cross the zone write boundary. This aligns with the "priority" of status
codes for zone read checks.
Also add a couple of additional descriptive trace events and remove an
always true assert.
Cc: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Tested-by: Niklas Cassel <niklas.cassel@wdc.com>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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When a zone append is processed the controller checks that validity of
the write before assigning the LBA to the append command. This causes
the boundary check to be wrong.
Fix this by checking the write *after* assigning the LBA. Remove the
append special case from the nvme_check_zone_write and open code it in
nvme_do_write, assigning the slba when basic sanity checks have been
performed. Then check the validity of the resulting write like any other
write command.
In the process, also fix a missing endianness conversion for the zone
append ALBA.
Reported-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Cc: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Tested-by: Niklas Cassel <niklas.cassel@wdc.com>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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The actual parameter name is 'cross_read' rather than 'cross_zone_read'.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Change status checks to align with the existing style and remove the
explicit check against NVME_SUCCESS.
Cc: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Currently, no features are saveable, so the current check is not wrong,
but add a check against the feature capabilities to make sure this will
not regress if saveable features are added later.
Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Only enable DULBE if the namespace supports it.
Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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If a user assigns a backing device with less capacity than the size of a
single zone, the namespace capacity will be reported as zero and the
kernel will silently fail to allocate the namespace.
This patch errors out in case that the backing device cannot accomodate
at least a single zone.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
[k.jensen: small fixup in the error and commit message]
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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The controller now implements v1.4 and we can lift the restrictions on
CMB Data Pointer and Command Independent Locations Support (CDPCILS) and
CMB Data Pointer Mixed Locations Support (CDPMLS) since the device
really does not care about mixed host/cmb pointers in those cases.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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With the new CMB logic in place, bump the implemented specification
version to v1.4 by default.
This requires adding the setting the CNTRLTYPE field and modifying the
VWC field since 0x00 is no longer a valid value for bits 2:1.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Implement v1.4 logic for configuring the Controller Memory Buffer. By
default, the v1.4 scheme will be used (CMB must be explicitly enabled by
the host), so drivers that only support v1.3 will not be able to use the
CMB anymore.
To retain the v1.3 behavior, set the boolean 'legacy-cmb' nvme device
parameter.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Padmakar Kalghatgi <p.kalghatgi@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Add support for the PMRMSCL and PMRMSCU MMIO registers. This allows
adding RDS/WDS support for PMR as well.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Naveen Nagar <naveen.n1@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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The PMR should not be enabled at boot up. Disable the PMR MemoryRegion
initially and implement MMIO for PMRCTL, allowing the host to enable the
PMR explicitly.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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The controller registers are initially zero. Remove the redundant
zeroing.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Use the correct field names.
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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With BAR 4 now free to use, allow PMR and CMB to be enabled
simultaneously.
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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In the interest of supporting both CMB and PMR to be enabled on the same
device, move the MSI-X table and pending bit array out of BAR 4 and into
BAR 0.
This is a simplified version of the patch contributed by Andrzej
Jakowski (see [1]). Leaving the CMB at offset 0 removes the need for
changes to CMB address mapping code.
[1]: https://lore.kernel.org/qemu-devel/20200729220107.37758-3-andrzej.jakowski@linux.intel.com/
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Tested-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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This patch sets CMBS bit in controller capabilities register when user
configures NVMe driver with CMB support, so capabilites are correctly
reported to guest OS.
Signed-off-by: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
Reviewed-by: Maxim Levitsky <mlevitsky@gmail.com>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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64 bit registers like ASQ and ACQ should be writable by both a hi/lo 32
bit write combination as well as a plain 64 bit write. The spec does not
define ordering on the hi/lo split, but the code currently assumes that
the low order bits are written first. Additionally, the code does not
consider that another address might already have been written into the
register, causing the OR'ing to result in a bad address.
Fix this by explicitly overwriting only the low or high order bits for
32 bit writes.
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
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Add the size of the mmio read/write to the trace event.
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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During smart critical warning injection by setting property from QMP
command, also try to trigger asynchronous event.
Suggested by Keith, if a event has already been raised, there is no
need to enqueue the duplicate event any more.
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
[k.jensen: fix typo in commit message]
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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There is a very low probability that hitting physical NVMe disk
hardware critical warning case, it's hard to write & test a monitor
agent service.
For debugging purposes, add a new 'smart_critical_warning' property
to emulate this situation.
The orignal version of this change is implemented by adding a fixed
property which could be initialized by QEMU command line. Suggested
by Philippe & Klaus, rework like current version.
Test with this patch:
1, change smart_critical_warning property for a running VM:
#virsh qemu-monitor-command nvme-upstream '{ "execute": "qom-set",
"arguments": { "path": "/machine/peripheral-anon/device[0]",
"property": "smart_critical_warning", "value":16 } }'
2, run smartctl in guest
#smartctl -H -l error /dev/nvme0n1
=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: FAILED!
- volatile memory backup device has failed
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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The zone write pointer is unconditionally advanced, even for write
faults. Make sure that the zone is always transitioned to Full if the
write pointer reaches zone capacity.
Cc: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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nvme_ns_setup() finally does not have nothing to do with NvmeCtrl
instance.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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In NVMe, namespace is being attached to process I/O. We register NVMe
namespace to a controller via nvme_register_namespace() during
nvme_ns_setup(). This is main reason of receiving NvmeCtrl object
instance to this function to map the namespace to a controller.
To make namespace instance more independent, it should be split into two
parts: setup and register. This patch split them into two differnt
parts, and finally nvme_ns_setup() does not have nothing to do with
NvmeCtrl instance at all.
This patch is a former patch to introduce NVMe subsystem scheme to the
existing design especially for multi-path. In that case, it should be
split into two to make namespace independent from a controller.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Removed no longer used aregument NvmeCtrl object in nvme_ns_init_blk().
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Volatile Write Cache(VWC) feature is set in nvme_ns_setup() in the
initial time. This feature is related to block device backed, but this
feature is controlled in controller level via Set/Get Features command.
This patch removed dependency between nvme and nvme-ns to manage the VWC
flag value. Also, it open coded the Get Features for VWC to check all
namespaces attached to the controller, and if false detected, return
directly false.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
[k.jensen: report write cache preset if present on ANY namespace]
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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nvme_ns_init_zoned() has no use for given NvmeCtrl object.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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TP 4053 says (in section 2.3.1.1) -
... if a Zone Append command specifies a ZSLBA that is not the lowest
logical block address in that zone, then the controller shall abort
that command with a status code of Invalid Field In Command.
In the code, Zone Invalid Write is returned instead, fix this.
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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nvme_io_cmd already checks if the namespace supports the Zone Append
command, so the removed check is dead code.
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
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Add missing string representations for a couple of new commands.
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
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The zoned command set specification states that "All logical blocks in a
zone *shall* be marked as deallocated when [the zone is reset]". Since
the device guarantees 0x00 to be read from deallocated blocks we have to
issue a pwrite_zeroes since we cannot be sure that a discard will do
anything. But typically, this will be achieved with an efficient
unmap/discard operation.
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
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Align with existing style and use a typedef for header-file enums.
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
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Implicitly and explicitly opended zones are always bulk processed
together, so merge the two processing masks.
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
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A shutdown is only about flushing stuff. It is the host that should
delete any queues, so do not perform a reset here.
Also, on shutdown, make sure that the PMR is flushed if in use.
Fixes: 368f4e752cf9 ("hw/block/nvme: Process controller reset and shutdown differently")
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Tested-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
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The device uses the BDRV_BLOCK_ZERO flag to determine the "deallocated"
status of logical blocks. Since the zoned namespaces command set
specification defines that logical blocks SHALL be marked as deallocated
when the zone is in the Empty or Offline states, DULBE can only be
supported if the zone size is a multiple of the calculated deallocation
granularity (reported in NPDG) which depends on the underlying block
device cluster size (if applicable) or the configured
discard_granularity.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Commit 1c0c2163aa08 ("hw/block/nvme: verify msix_init_exclusive_bar()
return value") had the unintended effect of breaking support on
several platforms not supporting MSI-X.
Still check for errors, but only report that MSI-X is unsupported
instead of bailing out.
Fixes: 1c0c2163aa08 ("hw/block/nvme: verify msix_init_exclusive_bar() return value")
Fixes: fbf2e5375e33 ("hw/block/nvme: Verify msix_vector_use() returned value")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Added brief descriptions of the new device properties that are
now available to users to configure features of Zoned Namespace
Command Set in the emulator.
This patch is for documentation only, no functionality change.
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Zone Descriptor Extension is a label that can be assigned to a zone.
It can be set to an Empty zone and it stays assigned until the zone
is reset.
This commit adds a new optional module property,
"zoned.descr_ext_size". Its value must be a multiple of 64 bytes.
If this value is non-zero, it becomes possible to assign extensions
of that size to any Empty zones. The default value for this property
is 0, therefore setting extensions is disabled by default.
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Add two module properties, "zoned.max_active" and "zoned.max_open"
to control the maximum number of zones that can be active or open.
Once these variables are set to non-default values, these limits are
checked during I/O and Too Many Active or Too Many Open command status
is returned if they are exceeded.
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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The emulation code has been changed to advertise NVM Command Set when
"zoned" device property is not set (default) and Zoned Namespace
Command Set otherwise.
Define values and structures that are needed to support Zoned
Namespace Command Set (NVMe TP 4053) in PCI NVMe controller emulator.
Define trace events where needed in newly introduced code.
In order to improve scalability, all open, closed and full zones
are organized in separate linked lists. Consequently, almost all
zone operations don't require scanning of the entire zone array
(which potentially can be quite large) - it is only necessary to
enumerate one or more zone lists.
Handlers for three new NVMe commands introduced in Zoned Namespace
Command Set specification are added, namely for Zone Management
Receive, Zone Management Send and Zone Append.
Device initialization code has been extended to create a proper
configuration for zoned operation using device properties.
Read/Write command handler is modified to only allow writes at the
write pointer if the namespace is zoned. For Zone Append command,
writes implicitly happen at the write pointer and the starting write
pointer value is returned as the result of the command. Write Zeroes
handler is modified to add zoned checks that are identical to those
done as a part of Write flow.
Subsequent commits in this series add ZDE support and checks for
active and open zone limits.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Matias Bjorling <matias.bjorling@wdc.com>
Signed-off-by: Aravind Ramesh <aravind.ramesh@wdc.com>
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Adam Manzanares <adam.manzanares@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Many CNS commands have "allocated" command variants. These include
a namespace as long as it is allocated, that is a namespace is
included regardless if it is active (attached) or not.
While these commands are optional (they are mandatory for controllers
supporting the namespace attachment command), our QEMU implementation
is more complete by actually providing support for these CNS values.
However, since our QEMU model currently does not support the namespace
attachment command, these new allocated CNS commands will return the
same result as the active CNS command variants.
The reason for not hooking up this command completely is because the
NVMe specification requires the namespace management command to be
supported if the namespace attachment command is supported.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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Define the structures and constants required to implement
Namespace Types support.
Namespace Types introduce a new command set, "I/O Command Sets",
that allows the host to retrieve the command sets associated with
a namespace. Introduce support for the command set and enable
detection for the NVM Command Set.
The new workflows for identify commands rely heavily on zero-filled
identify structs. E.g., certain CNS commands are defined to return
a zero-filled identify struct when an inactive namespace NSID
is supplied.
Add a helper function in order to avoid code duplication when
reporting zero-filled identify structures.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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This log page becomes necessary to implement to allow checking for
Zone Append command support in Zoned Namespace Command Set.
This commit adds the code to report this log page for NVM Command
Set only. The parts that are specific to zoned operation will be
added later in the series.
All incoming admin and i/o commands are now only processed if their
corresponding support bits are set in this log. This provides an
easy way to control what commands to support and what not to
depending on set CC.CSS.
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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'remotes/dgilbert/tags/pull-migration-20210208a' into staging
Migration pull 2021-02-08
v2
Dropped vmstate: Fix memory leak in vmstate_handle_alloc
Broke on Power
Added migration: only check page size match if RAM postcopy is enabled
# gpg: Signature made Mon 08 Feb 2021 11:28:14 GMT
# gpg: using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* remotes/dgilbert/tags/pull-migration-20210208a: (27 commits)
migration: only check page size match if RAM postcopy is enabled
migration: introduce snapshot-{save, load, delete} QMP commands
iotests: fix loading of common.config from tests/ subdir
iotests: add support for capturing and matching QMP events
migration: introduce a delete_snapshot wrapper
migration: wire up support for snapshot device selection
migration: control whether snapshots are ovewritten
block: rename and alter bdrv_all_find_snapshot semantics
block: allow specifying name of block device for vmstate storage
block: add ability to specify list of blockdevs during snapshot
migration: stop returning errno from load_snapshot()
migration: Make save_snapshot() return bool, not 0/-1
block: push error reporting into bdrv_all_*_snapshot functions
migration: Display the migration blockers
migration: Add blocker information
migration: Fix a few absurdly defective error messages
migration: Fix cache_init()'s "Failed to allocate" error messages
migration: Clean up signed vs. unsigned XBZRLE cache-size
migration: Fix migrate-set-parameters argument validation
migration: introduce 'userfaultfd-wrlat.py' script
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Move write processing to nvme_do_write() that now handles both WRITE
and WRITE ZEROES. Both nvme_write() and nvme_write_zeroes() become
inline helper functions.
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Reviewed-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
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