Goal of the series is to have a framwork to test Channel-Subsystem I/O with QEMU/KVM. To be able to support interrupt for CSS I/O and for SCLP we need to modify the interrupt framework to allow re-entrant interruptions. Making the interrupt handler weak allows the test programm to define its own interrupt handler. We need to do special work under interrupt like acknoledging the interrupt. Being working on PSW bits to allow I/O interrupt, we define all PSW bits in a dedicated file. The simple test tests the I/O reading by the SUB Channel. It needs QEMU to be patched to have the pong device defined. The pong device answers, for now, with a Hello World to the read request. Pierre Morel (9): s390x: saving regs for interrupts s390x: Define the PSW bits s390x: irq: make IRQ handler weak s390x: export the clock get_clock_ms() utility s390x: Library resources for CSS tests s390x: css: stsch, enumeration test s390x: css: msch, enable test s390x: css: ssch/tsch with sense and interrupt s390x: css: ping pong lib/s390x/asm/arch_bits.h | 20 +++ lib/s390x/asm/arch_def.h | 6 +- lib/s390x/asm/clock.h | 25 ++++ lib/s390x/css.h | 282 ++++++++++++++++++++++++++++++++++++ lib/s390x/css_dump.c | 147 +++++++++++++++++++ lib/s390x/interrupt.c | 2 +- s390x/Makefile | 4 +- s390x/css.c | 294 ++++++++++++++++++++++++++++++++++++++ s390x/cstart64.S | 38 +++-- s390x/intercept.c | 11 +- s390x/unittests.cfg | 4 + 11 files changed, 809 insertions(+), 24 deletions(-) create mode 100644 lib/s390x/asm/arch_bits.h create mode 100644 lib/s390x/asm/clock.h create mode 100644 lib/s390x/css.h create mode 100644 lib/s390x/css_dump.c create mode 100644 s390x/css.c -- 2.17.0 Changelog: - saving floating point registers (David, Janosh) - suppress unused PSW bits defintions (Janosh) - added Thomas reviewed-by - style and comments modifications (Connie, Janosh) - moved get_clock_ms() into headers and use it (Thomas) - separate header and library utility from tests - Suppress traces, separate tests, make better usage of reports
