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[v2,0/9] Add Xue - console over USB 3 Debug Capability

Message ID cover.991b72d99d9e5bd4c2c76791ceb49f1056ce5d1c.1657121519.git-series.marmarek@invisiblethingslab.com (mailing list archive)
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Series Add Xue - console over USB 3 Debug Capability | expand

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Marek Marczykowski-Górecki July 6, 2022, 3:32 p.m. UTC 
This is integration of https://github.com/connojd/xue into mainline Xen.
This patch series includes several patches that I made in the process, some are
very loosely related.

The driver developed by Connor supports output-only console via USB3 debug
capability. The capability is designed to operate mostly independently of
normal XHCI driver, so this patch series allows dom0 to drive standard USB3
controller part, while Xen uses DbC for console output.

Changes since RFC:
 - move the driver to xue.c, remove non-Xen parts, remove now unneeded abstraction
 - adjust for Xen code style
 - build for x86 only
 - drop patch hidding the device from dom0
Changes since v1:
 - drop ehci patch - already applied
 - adjust for review comments from Jan (see changelogs in individual patches)

Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: George Dunlap <george.dunlap@citrix.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Julien Grall <julien@xen.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Wei Liu <wl@xen.org>
Cc: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: Paul Durrant <paul@xen.org>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Connor Davis <connojdavis@gmail.com>

Connor Davis (1):
  drivers/char: Add support for Xue USB3 debugger

Marek Marczykowski-Górecki (8):
  xue: reset XHCI ports when initializing dbc
  xue: add support for selecting specific xhci
  console: support multiple serial console simultaneously
  IOMMU: add common API for device reserved memory
  IOMMU/VT-d: wire common device reserved memory API
  IOMMU/AMD: wire common device reserved memory API
  xue: mark DMA buffers as reserved for the device
  xue: allow driving the rest of XHCI by a domain while Xen uses DbC

 docs/misc/xen-command-line.pandoc        |    5 +-
 xen/arch/x86/include/asm/fixmap.h        |    4 +-
 xen/arch/x86/setup.c                     |    3 +-
 xen/drivers/char/Kconfig                 |    9 +-
 xen/drivers/char/Makefile                |    1 +-
 xen/drivers/char/console.c               |   58 +-
 xen/drivers/char/xue.c                   | 1066 +++++++++++++++++++++++-
 xen/drivers/passthrough/amd/iommu_acpi.c |   16 +-
 xen/drivers/passthrough/iommu.c          |   40 +-
 xen/drivers/passthrough/vtd/dmar.c       |  203 ++--
 xen/include/xen/iommu.h                  |   11 +-
 xen/include/xen/serial.h                 |    3 +-
 12 files changed, 1323 insertions(+), 96 deletions(-)
 create mode 100644 xen/drivers/char/xue.c

base-commit: 0544c4ee4b48f7e2715e69ff3e73c3d5545b0526