| Message ID | 1594887809-10521-1-git-send-email-pmorel@linux.ibm.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | s390x: Testing the Channel Subsystem I/O | expand |
On 7/16/20 10:23 AM, Pierre Morel wrote: > Hi All, > > This new respin of the series add modifications to > - patch 9: s390x: css: ssch/tsch with sense and interrupt > Other patches did not change. > > Recall: > > Goal of the series is to have a framework 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. > > We add a registration for IRQ callbacks to the test program to define its own > interrupt handler. We need to do special work under interrupt like acknowledging > the interrupt. > > This series presents three tests: > - Enumeration: > The CSS is enumerated using the STSCH instruction recursively on all > potentially existing channels. > Keeping the first channel found as a reference for future use. > Checks STSCH > > - Enable: > If the enumeration succeeded the tests enables the reference > channel with MSCH and verifies with STSCH that the channel is > effectively enabled, retrying a predefined count on failure > to enable the channel > Checks MSCH > > - Sense: > If the channel is enabled this test sends a SENSE_ID command > to the reference channel, analyzing the answer and expecting > the Control unit type being 0x3832, a.k.a. virtio-ccw. > Checks SSCH(READ) and IO-IRQ > > Note: > - The following 5 patches are general usage and may be pulled first: > s390x: saving regs for interrupts > s390x: I/O interrupt registration > s390x: export the clock get_clock_ms() utility > s390x: clock and delays calculations > s390x: define function to wait for interrupt > > - These 4 patches are really I/O oriented: > s390x: Library resources for CSS tests > s390x: css: stsch, enumeration test > s390x: css: msch, enable test > s390x: css: ssch/tsch with sense and interrupt > > Regards, > Pierre Thanks, picked > > Pierre Morel (9): > s390x: saving regs for interrupts > s390x: I/O interrupt registration > s390x: export the clock get_clock_ms() utility > s390x: clock and delays calculations > s390x: define function to wait for interrupt > s390x: Library resources for CSS tests > s390x: css: stsch, enumeration test > s390x: css: msch, enable test > s390x: css: ssch/tsch with sense and interrupt > > lib/s390x/asm/arch_def.h | 14 ++ > lib/s390x/asm/time.h | 50 ++++++ > lib/s390x/css.h | 294 +++++++++++++++++++++++++++++++++++ > lib/s390x/css_dump.c | 152 ++++++++++++++++++ > lib/s390x/css_lib.c | 323 +++++++++++++++++++++++++++++++++++++++ > lib/s390x/interrupt.c | 23 ++- > lib/s390x/interrupt.h | 8 + > s390x/Makefile | 3 + > s390x/css.c | 150 ++++++++++++++++++ > s390x/cstart64.S | 41 ++++- > s390x/intercept.c | 11 +- > s390x/unittests.cfg | 4 + > 12 files changed, 1060 insertions(+), 13 deletions(-) > create mode 100644 lib/s390x/asm/time.h > create mode 100644 lib/s390x/css.h > create mode 100644 lib/s390x/css_dump.c > create mode 100644 lib/s390x/css_lib.c > create mode 100644 lib/s390x/interrupt.h > create mode 100644 s390x/css.c >
Hi All, This new respin of the series add modifications to - patch 9: s390x: css: ssch/tsch with sense and interrupt Other patches did not change. Recall: Goal of the series is to have a framework 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. We add a registration for IRQ callbacks to the test program to define its own interrupt handler. We need to do special work under interrupt like acknowledging the interrupt. This series presents three tests: - Enumeration: The CSS is enumerated using the STSCH instruction recursively on all potentially existing channels. Keeping the first channel found as a reference for future use. Checks STSCH - Enable: If the enumeration succeeded the tests enables the reference channel with MSCH and verifies with STSCH that the channel is effectively enabled, retrying a predefined count on failure to enable the channel Checks MSCH - Sense: If the channel is enabled this test sends a SENSE_ID command to the reference channel, analyzing the answer and expecting the Control unit type being 0x3832, a.k.a. virtio-ccw. Checks SSCH(READ) and IO-IRQ Note: - The following 5 patches are general usage and may be pulled first: s390x: saving regs for interrupts s390x: I/O interrupt registration s390x: export the clock get_clock_ms() utility s390x: clock and delays calculations s390x: define function to wait for interrupt - These 4 patches are really I/O oriented: s390x: Library resources for CSS tests s390x: css: stsch, enumeration test s390x: css: msch, enable test s390x: css: ssch/tsch with sense and interrupt Regards, Pierre Pierre Morel (9): s390x: saving regs for interrupts s390x: I/O interrupt registration s390x: export the clock get_clock_ms() utility s390x: clock and delays calculations s390x: define function to wait for interrupt s390x: Library resources for CSS tests s390x: css: stsch, enumeration test s390x: css: msch, enable test s390x: css: ssch/tsch with sense and interrupt lib/s390x/asm/arch_def.h | 14 ++ lib/s390x/asm/time.h | 50 ++++++ lib/s390x/css.h | 294 +++++++++++++++++++++++++++++++++++ lib/s390x/css_dump.c | 152 ++++++++++++++++++ lib/s390x/css_lib.c | 323 +++++++++++++++++++++++++++++++++++++++ lib/s390x/interrupt.c | 23 ++- lib/s390x/interrupt.h | 8 + s390x/Makefile | 3 + s390x/css.c | 150 ++++++++++++++++++ s390x/cstart64.S | 41 ++++- s390x/intercept.c | 11 +- s390x/unittests.cfg | 4 + 12 files changed, 1060 insertions(+), 13 deletions(-) create mode 100644 lib/s390x/asm/time.h create mode 100644 lib/s390x/css.h create mode 100644 lib/s390x/css_dump.c create mode 100644 lib/s390x/css_lib.c create mode 100644 lib/s390x/interrupt.h create mode 100644 s390x/css.c