On 2/12/21 11:32 AM, Cornelia Huck wrote:
On Wed, 10 Feb 2021 14:20:10 +0100
Pierre Morel <pmorel@xxxxxxxxxxxxx> wrote:
CSS characteristics exposes the features of the Channel SubSystem.
Let's use Store Channel Subsystem Characteristics to retrieve
the features of the CSS.
Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
---
lib/s390x/css.h | 69 +++++++++++++++++++++++++++
lib/s390x/css_lib.c | 112 +++++++++++++++++++++++++++++++++++++++++++-
s390x/css.c | 12 +++++
3 files changed, 192 insertions(+), 1 deletion(-)
(...)
+static const char *chsc_rsp_description[] = {
+ "CHSC unknown error",
+ "Command executed",
+ "Invalid command",
+ "Request-block error",
+ "Command not installed",
+ "Data not available",
+ "Absolute address of channel-subsystem"
+ "communication block exceeds 2 - 1.",
"2G - 1", I think?
:) yes
+ "Invalid command format",
+ "Invalid channel-subsystem identification (CSSID)",
+ "The command-request block specified an invalid format"
+ "for the command response block.",
+ "Invalid subchannel-set identification (SSID)",
+ "A busy condition precludes execution.",
+};
(...)
This matches both the Linux implementation and my memories, so
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
Thanks,
Pierre
--
Pierre Morel
IBM Lab Boeblingen
