[PATCH v3 0/1] s390x: css: pong, channel subsystem test device

[Pierre Morel <pmorel@linux.ibm.com>]

This patch series presents a device to test the channel subsystem.

Currently the pong device does the following:
- on PONG_WRITE requests:
  read the CCW buffer, expect a string with an integer in the buffer.
  store the integer in a variable initialy initialized to zero.

- on PONG_READ requests:
  Store the value of the variable + 1 as a string in a buffer
  send back the buffer

- defines a Control Unit property of type CCW_PONG_CU_TYPE
  for the guest to recognize the PONG device when using a
  SENSE_ID command.

Pierre Morel (1):
  s390x: css: pong, channel subsystem test device

 default-configs/s390x-softmmu.mak |   1 +
 hw/s390x/Kconfig                  |   3 +
 hw/s390x/Makefile.objs            |   1 +
 hw/s390x/ccw-pong.c               | 134 ++++++++++++++++++++++++++++++
 include/hw/s390x/pong.h           |  48 +++++++++++
 5 files changed, 187 insertions(+)
 create mode 100644 hw/s390x/ccw-pong.c
 create mode 100644 include/hw/s390x/pong.h

-- 
2.25.1



Changelog:

from v2 to v3
- rebase to devel
- use device_class_set_props()

from v1 to v2
- use ccw_dstream_xxx_buf (Connie)
- adding a cu_type property
- testing the ccw.count
- conditional compiling for TEST_DEVICES (Connie, Thomas)
- suppress the device categorie (Connie ?)
- adding write callback and some funny protocol