On Fri, 24 Apr 2020 12:45:47 +0200 Pierre Morel <pmorel@xxxxxxxxxxxxx> wrote: > These are the include and library utilities for the css tests patch > series. "Provide some definitions and library routines that can be used by tests targeting the channel subsystem." ? > > Debug function can be activated by defining DEBUG_CSS before the > inclusion of the css.h header file. > > Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx> > --- > lib/s390x/css.h | 256 +++++++++++++++++++++++++++++++++++++++++++ > lib/s390x/css_dump.c | 157 ++++++++++++++++++++++++++ > 2 files changed, 413 insertions(+) > create mode 100644 lib/s390x/css.h > create mode 100644 lib/s390x/css_dump.c (...) > diff --git a/lib/s390x/css_dump.c b/lib/s390x/css_dump.c > new file mode 100644 > index 0000000..2f33fab > --- /dev/null > +++ b/lib/s390x/css_dump.c > @@ -0,0 +1,157 @@ > +/* > + * Channel subsystem structures dumping > + * > + * Copyright (c) 2020 IBM Corp. > + * > + * Authors: > + * Pierre Morel <pmorel@xxxxxxxxxxxxx> > + * > + * This code is free software; you can redistribute it and/or modify it > + * under the terms of the GNU General Public License version 2. > + * > + * Description: > + * Provides the dumping functions for various structures used by subchannels: > + * - ORB : Operation request block, describes the I/O operation and points to > + * a CCW chain > + * - CCW : Channel Command Word, describes the data and flow control "describes the command, data, and flow control" ? > + * - IRB : Interuption response Block, describes the result of an operation s/operation/operation;/ > + * holds a SCSW and model-dependent data. > + * - SCHIB: SubCHannel Information Block composed of: > + * - SCSW: SubChannel Status Word, status of the channel. > + * - PMCW: Path Management Control Word > + * You need the QEMU ccw-pong device in QEMU to answer the I/O transfers. > + */ (...) Otherwise, looks good.
