[PATCH v3 0/5] Support Flexible Data Placement (FDP)

[Jesper Devantier <jwd@defmacro.it>]

From: Jesper Wendel Devantier <j.devantier@samsung.com>

Flexible Data Placement (FDP) is a newly introduced enhancement
of the NVM command set introduced by the NVM Express, Inc.
organization as TP 4146. FDP aims to extend the NVM command set
to enable host-guided data placement. FDP-enabled namespaces
can be used as before, but writes may now reference a specific
placement id which in turn points to a reclaim unit (RU). RUs
are defined as some amount of physical, non-volatile storage which
can be erased/reused/repurposed without disturbing any other
reclaim units.

For further details on FDP, consult the specification, which is
available as "TP4146 Flexible Data Placement 2022.11.30 Ratified.pdf"
in the following link:
https://nvmexpress.org/wp-content/uploads/NVM-Express-2.0-Ratified-TPs_20230111.zip

The FDP work builds on 4 preparatory patches, chiefly to add support for
endurance groups and directives.
The final patch adds FDP support itself.

Changelog:
==========

* v2 -> v3:
  - remove unused trace points (Keith)
  - style nit - place '||' on preceding line (Keith)
* v1 -> v2:
  - "hw/nvme: add fleible...": check that max 128 placement handles
    are being created (Keith)
  - removed unused NVMe directives struct (Keith)

Gollu Appalanaidu (1):
  hw/nvme: basic directives support

Jesper Devantier (1):
  hw/nvme: flexible data placement emulation

Joel Granados (1):
  hw/nvme: move adjustment of data_units{read,written}

Klaus Jensen (1):
  hw/nvme: add basic endurance group support

Niklas Cassel (1):
  hw/nvme: store a pointer to the NvmeSubsystem in the NvmeNamespace

 hw/nvme/ctrl.c       | 798 ++++++++++++++++++++++++++++++++++++++++++-
 hw/nvme/ns.c         | 147 ++++++++
 hw/nvme/nvme.h       |  92 ++++-
 hw/nvme/subsys.c     |  94 ++++-
 hw/nvme/trace-events |   1 +
 include/block/nvme.h | 236 ++++++++++++-
 6 files changed, 1341 insertions(+), 27 deletions(-)

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2.39.2