[PATCH v5 00/13] bus/fsl-mc: Extend mc-bus driver functionalities in preparation for mc-bus VFIO support

Diana Craciun diana.craciun at oss.nxp.com
Tue Sep 29 04:54:28 EDT 2020

The vfio-mc bus driver needs some additional services to be exported by the
mc-bus driver like:
- a way to reset the DPRC container
- driver_override support
- functions to setup/tear down a DPRC
- functions for allocating the pool of interrupts. In case of VFIO the
interrupts are not configured at probe time, but later by userspace

v4 -> v5
- dprc_celanup should not fail

v3 -> v4
- Rebased on the latest kernel.
- Exported a dprc_remove function

v2 -> v3
- Add a new version for dprc_get_obj_region
- Export the cacheability bus specific bits defines

v1 -> v2
- Remove driver_override propagation through various functions
- Cache the DPRC API version

The patches are related with "vfio/fsl-mc: VFIO support for FSL-MC
devices" patches, but the series were split because they are targeting
different subsystems. However, the mc-bus patches may suffer changes
when addressing the VFIO review comments.

The patches do not address the comment regarding moving driver_override
in the core code. I prefer not to tie these patches on that change and
address that separately.

Bharat Bhushan (3):
  bus/fsl-mc: add support for 'driver_override' in the mc-bus
  bus/fsl-mc: Add dprc-reset-container support
  bus/fsl-mc: Extend ICID size from 16bit to 32bit

Diana Craciun (10):
  bus/fsl-mc: Do no longer export the total number of irqs outside
  bus/fsl-mc: Add a new parameter to dprc_scan_objects function
  bus/fsl-mc: Set the QMAN/BMAN region flags
  bus/fsl-mc: Cache the DPRC API version
  bus/fsl-mc: Export dprc_scan/dprc_remove functions to be used by
    multiple entities
  bus/fsl-mc: Export a cleanup function for DPRC
  bus/fsl-mc: Add a container setup function
  bus/fsl_mc: Do not rely on caller to provide non NULL mc_io
  bus/fsl-mc: Export IRQ pool handling functions to be used by VFIO
  bus/fsl-mc: Add a new version for dprc_get_obj_region command

 drivers/bus/fsl-mc/dprc-driver.c      | 190 ++++++++++++++++----------
 drivers/bus/fsl-mc/dprc.c             | 141 +++++++++++++++----
 drivers/bus/fsl-mc/fsl-mc-allocator.c |  12 +-
 drivers/bus/fsl-mc/fsl-mc-bus.c       |  64 ++++++++-
 drivers/bus/fsl-mc/fsl-mc-private.h   |  31 ++---
 drivers/bus/fsl-mc/mc-io.c            |   7 +-
 include/linux/fsl/mc.h                |  41 +++++-
 7 files changed, 359 insertions(+), 127 deletions(-)


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