[Accel-config] [PATCH v1 0/4] Add support for ABI change in driver

From: Ramesh Thomas <ramesh.thomas(a)intel.com>

The new ABI changes the way devices are enumerated in sysfs and the
driver portals used to bind and unbind. These patches add support for
the new ABI as well as compatibility with the ones in older kernels.

Following are the modes that are supported. 

1. New ABI:

- Both iax and dsa devices will be in same bus /sys/bus/dsa
- Different driver portals for "user", "kernel" and "mdev" type wqs

2. Kernel 5.11 and 5.12:

- iax and dsa will be in 2 separate buses
- Bus, device and driver portal names are same

3. Older kernels :

- Has only dsa bus

4. OSV having kernel with CONFIG_INTEL_IDXD_COMPAT enabled:

- Only one dsa bus
- Both iax and dsa devices will be on dsa bus.
- Only one driver portal for all wq types

Following are the changes added.

- Detect compatibility mode during init and store bus, driver and portal
  details in device contexts.

- Currently enumeration assumes device, bus and driver have the same
  name and relies on that to construct paths. Change it to dynamically
  construct paths based on compatibility mode that was detected during
  init.

Ramesh Thomas (4):
  accel-config: Fix some indentation and coding style issues
  accel-config: Add compatibility mode detection
  accel-config: Store bus type in device context
  accel-config: Add support for new driver portals

 accfg/lib/libaccfg.c    | 80 +++++++++++++++++++++++++++++------------
 accfg/lib/private.h     | 70 ++++++++++++++++++------------------
 accfg/libaccel_config.h | 37 +++++++++----------
 util/sysfs.c            |  5 +--
 util/sysfs.h            | 13 +++----
 5 files changed, 122 insertions(+), 83 deletions(-)

-- 
2.26.2