src/sys/dev/virtio/pci/virtio_pci.c, branch main

virtio: add loader tunables to sysctl

2026-03-02T18:15:37+00:00

virtio_pci uses two loader tunables that should be more visible.
This patch adds these loader tunables to sysctl and describes them
in the virtio(4) man page.

Reviewed by:		imp (erlier version), tuexen
MFC after:		1 week
Differential Revision:	https://reviews.freebsd.org/D55533

Use bus_generic_detach to detach and delete child devices during detach

2025-01-02T18:25:12+00:00

This is simpler and more robust than individual calls to
device_delete_child.

Differential Revision:	https://reviews.freebsd.org/D47972

newbus: globally replace device_add_child(..., -1) with DEVICE_UNIT_ANY

2024-07-25T04:22:58+00:00

Sponsored by:		Netflix

sys: Automated cleanup of cdefs and other formatting

2023-11-27T05:24:00+00:00

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+.*\n/
Remove /\n+#include\s+.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+\n#include\s+/
Remove /\n+#include\s+\n#include\s+/
Remove /\n+#include\s+\n#include\s+/

Sponsored by:		Netflix

virtio: remove virtio_alloc_virtqueues' flags arg

2023-09-18T20:03:31+00:00

Summary:
the flags argument is unused.
Its initial design idea has been superceded by the addition of
virtio_setup_intr and related APIs.

Sponsored by: The FreeBSD Foundation

Reviewers: bryanv

Reviewed By: bryanv

Subscribers: cognet, imp

Differential Revision: https://reviews.freebsd.org/D41850

virtio: use bool for boolean functions

2023-09-18T20:03:26+00:00

Summary:
these static functions:
- vq_ring_use_indirect

and these public functions:
- virtio_bus_is_modern
- virtio_with_feature
- virtqueue_empty
- virtqueue_full

exclusively return a boolean value.
Change their return values to bool.

Sponsored by: The FreeBSD Foundation

Reviewers: bryanv

Reviewed By: bryanv

Subscribers: cognet, imp

Differential Revision: https://reviews.freebsd.org/D41848

sys: Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:36+00:00

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

2023-05-12T16:44:03+00:00

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix

virtio_pci: Add sysctl to show current features

2021-01-19T04:55:23+00:00

Reviewed by: grehan (mentor)
Differential Revision: https://reviews.freebsd.org/D27898

virtio: Add VirtIO PCI modern (V1) support

2021-01-19T04:55:23+00:00

Use the existing legacy PCI driver as the basis for shared code
between the legacy and modern PCI drivers. The existing virtio_pci
kernel module will contain both the legacy and modern drivers.

Changes to the virtqueue and each device driver (network, block, etc)
for V1 support come in later commits.

Update the MMIO driver to reflect the VirtIO bus method changes, but
the modern compliance can be improved on later.

Note that the modern PCI driver requires bus_map_resource() to be
implemented, which is not the case on all archs.

The hw.virtio.pci.transitional tunable default value is zero so
transitional devices will continue to be driven via the legacy
driver.

Reviewed by: grehan (mentor)
Differential Revision: https://reviews.freebsd.org/D27856