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vfio: Add property documentation

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Investigate the git history to uncover when and why the VFIO
properties were introduced and update the models. This is mostly
targeting vfio-pci device, since vfio-platform, vfio-ap and vfio-ccw
devices are simpler.

Sort the properties based on the QEMU version in which they were
introduced.

Cc: Tony Krowiak <akrowiak@linux.ibm.com>
Cc: Eric Farman <farman@linux.ibm.com>
Cc: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Anthony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com> # vfio-ccw
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250217173455.449983-1-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Cédric Le Goater 2025-02-17 18:34:55 +01:00
parent e8a0110293
commit 4526687bf1
4 changed files with 173 additions and 0 deletions
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24
hw/vfio/platform.c
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@ -672,6 +672,30 @@ static void vfio_platform_class_init(ObjectClass *klass, void *data)
dc->desc = "VFIO-based platform device assignment";
sbc->connect_irq_notifier = vfio_start_irqfd_injection;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
object_class_property_set_description(klass, /* 2.4 */
"host",
"Host device name of assigned device");
object_class_property_set_description(klass, /* 2.4 and 2.5 */
"x-no-mmap",
"Disable MMAP for device. Allows to trace MMIO "
"accesses (DEBUG)");
object_class_property_set_description(klass, /* 2.4 */
"mmap-timeout-ms",
"When EOI is not provided by KVM/QEMU, wait time "
"(milliseconds) to re-enable device direct access "
"after level interrupt (DEBUG)");
object_class_property_set_description(klass, /* 2.4 */
"x-irqfd",
"Allow disabling irqfd support (DEBUG)");
object_class_property_set_description(klass, /* 2.6 */
"sysfsdev",
"Host sysfs path of assigned device");
#ifdef CONFIG_IOMMUFD
object_class_property_set_description(klass, /* 9.0 */
"iommufd",
"Set host IOMMUFD backend device");
#endif
}
static const TypeInfo vfio_platform_dev_info = {