src/sys/dev/virtio/virtio.c, branch release/12.4.0

Add VirtIO bus config_generation method

2018-02-19T19:28:24+00:00

VirtIO buses (PCI, MMIO) can provide a generation field so a driver
can ensure either a 64-bit or array read was stable.

MFC after:	2 weeks

Sync VirtIO IDs with Linux

2018-01-14T06:03:40+00:00

sys/dev: further adoption of SPDX licensing ID tags.

2017-11-27T14:52:40+00:00

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Split the virtio.h header file into multiple files

2014-06-01T18:16:01+00:00

Reorganize the previous contexts of the file as it is in Linux. The
eventual goal is to install the header files and share them between
the kernel and bhyve.

MFC after:	1 week

Merge virtio changes from projects/virtio

2013-07-04T17:57:26+00:00

Contains projects/virtio commits:

r245738:
    virtio: Minor man page tweaks
r246060:
    virtio: Cleanup feature description printing
r246306:
    virtio: Remove old debugging flag
r247238:
    virtio: Remove PRIx64 macros from format strings
r247239:
    virtio: Constify some fields
r247240:
    virtio: Minor code simplifications
r249962:
    virtio: Update to my freebsd.org email address

MFC after:	1 month

Virtio SCSI driver

2012-10-11T23:41:18+00:00

Submitted by:	Bryan Venteicher  bryanv at daemoninthecloset dot org
Reviewed by:	grehan

Revert previous commit...

2012-10-10T08:36:38+00:00

Pointyhat to:	kevlo (myself)

Prefer NULL over 0 for pointers

2012-10-09T08:27:40+00:00

Various VirtIO improvements

2012-07-11T02:57:19+00:00

      PCI:
        - Properly handle interrupt fallback from MSIX to MSI to legacy.
          The host may not have sufficient resources to support MSIX,
          so we must be able to fallback to legacy interrupts.
        - Add interface to get the (sub) vendor and device IDs.
        - Rename flags to VTPCI_FLAG_* like other VirtIO drivers.
      Block:
        - No longer allocate vtblk_requests from separate UMA zone.
          malloc(9) from M_DEVBUF is sufficient. Assert segment counts
          at allocation.
        - More verbose error and debug messages.
      Network:
        - Remove stray write once variable.
      Virtqueue:
        - Shuffle code around in preparation of converting the mb()s to
          the appropriate atomic(9) operations.
        - Only walk the descriptor chain when freeing if INVARIANTS is
          defined since the result is only KASSERT()ed.

Submitted by:	Bryan Venteicher (bryanv@daemoninthecloset.org)

Import virtio base, PCI front-end, and net/block/balloon drivers.

2011-11-18T05:43:43+00:00

Tested on Qemu/KVM, VirtualBox, and BHyVe.

Currently built as modules-only on i386/amd64. Man pages not yet hooked
up, pending review.

Submitted by:	Bryan Venteicher  bryanv at daemoninthecloset dot org
Reviewed by:	bz
MFC after:	4 weeks or so