Hi,
This patch implements CANFD controller for xlnx-versal-virt machine. There are
two controllers CANFD0@0xFF06_0000 and CANFD1@0xFF07_0000 are connected to the
machine.

Also, added basic qtests for data exchange between both the controllers in
various supported configs.

Changelog:
v4->v5:
    Fix Linux dtb connections for CANFD.
    Address feedback from Francisco for xlnx-versal-canfd.c file.
v3->v4:
    Address formatting related feedback from Peter.
    Correct dlc byte data storing if dlc is not a multiple of 4.
    Remove unnecessary LOG_GUEST_ERROR.
    Remove instance_finalize(canfd_finalize) function.
    Remove unused member of struct XlnxVersalCANFDState.

v2->v3:
    Corrected reg2frame().
    Added assert to prevent out of bound cases.
    Replace tx_id link list with GSList and removed sorting function.
    Replaced PTIMER_POLICY_LEGACY with proper timer policies.
    Corrected minor code format issues.

v1->v2
    Update xlnx-versal-virt.rst with CANFD examples and add this in 03/05 patch.
    Addressed comments for patch 02/05 and 03/05.
    Add reviewed-by tags for patch 01/05, 04/05 and 05/05.
    Change commit message for patch 02/05.
    Add SPDX license for Qtest.

Regards,
Vikram


Vikram Garhwal (4):
  MAINTAINERS: Include canfd tests under Xilinx CAN
  hw/net/can: Introduce Xilinx Versal CANFD controller
  xlnx-versal: Connect Xilinx VERSAL CANFD controllers
  tests/qtest: Introduce tests for Xilinx VERSAL CANFD controller

 MAINTAINERS                          |    2 +-
 docs/system/arm/xlnx-versal-virt.rst |   31 +
 hw/arm/xlnx-versal-virt.c            |   53 +
 hw/arm/xlnx-versal.c                 |   37 +
 hw/net/can/meson.build               |    1 +
 hw/net/can/trace-events              |    7 +
 hw/net/can/xlnx-versal-canfd.c       | 2107 ++++++++++++++++++++++++++
 include/hw/arm/xlnx-versal.h         |   12 +
 include/hw/net/xlnx-versal-canfd.h   |   87 ++
 tests/qtest/meson.build              |    1 +
 tests/qtest/xlnx-canfd-test.c        |  423 ++++++
 11 files changed, 2760 insertions(+), 1 deletion(-)
 create mode 100644 hw/net/can/xlnx-versal-canfd.c
 create mode 100644 include/hw/net/xlnx-versal-canfd.h
 create mode 100644 tests/qtest/xlnx-canfd-test.c

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2.17.1