src/sys/dev/virtio/mmio, branch main

virtio/mmio: Remove the unused virtio_mmio_if.m

2025-08-21T08:37:53+00:00

The only driver I know that implemented this interface was removed 7
months ago. Remove the interface and platform from the softc.

Reviewed by:	imp
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D51992

newbus: replace leftover device unit wildcards

2025-06-21T02:57:45+00:00

Reviewed by:	imp, jhb
Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D50913

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

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Its initial design idea has been superceded by the addition of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 sh pattern

2023-08-16T17:54:58+00:00

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

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

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

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

sys: Remove $FreeBSD$: two-line .h pattern

2023-08-16T17:54:11+00:00

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

virtio_mmio: Support command-line parameters

2022-10-18T06:02:21+00:00

The Virtio MMIO bus driver was added in 2014 with support for devices
exposed via FDT; in 2018 support was added to discover Virtio MMIO
devices via ACPI tables, as in QEMU.  The Firecracker VMM eschews both
FDT and ACPI, instead presenting device information via kernel command
line arguments of the form virtio_mmio.device=.

These command line parameters get converted into kernel environment
variables; this adds support for parsing those variables and attaching
virtio_mmio children to nexus.

There is a case to be made that it would be cleaner to have a new
"cmdlinebus" attached to nexus and virtio_mmio children attached to
that.  A future commit might do that.

Discussed with:	imp, jrtc27
Sponsored by:	https://patreon.com/cperciva
Differential Revision:	https://reviews.freebsd.org/D36189