qemu-e2k/hw/watchdog/trace-events
Alexey Kardashevskiy 81b205cecf ppc/spapr: Implement H_WATCHDOG
The new PAPR 2.12 defines a watchdog facility managed via the new
H_WATCHDOG hypercall.

This adds H_WATCHDOG support which a proposed driver for pseries uses:
https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=303120

This was tested by running QEMU with a debug kernel and command line:
-append \
 "pseries-wdt.timeout=60 pseries-wdt.nowayout=1 pseries-wdt.action=2"

and running "echo V > /dev/watchdog0" inside the VM.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220622051008.1067464-1-aik@ozlabs.ru>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2022-07-06 10:22:38 -03:00

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# See docs/devel/tracing.rst for syntax documentation.
# cmsdk-apb-watchdog.c
cmsdk_apb_watchdog_read(uint64_t offset, uint64_t data, unsigned size) "CMSDK APB watchdog read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
cmsdk_apb_watchdog_write(uint64_t offset, uint64_t data, unsigned size) "CMSDK APB watchdog write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
cmsdk_apb_watchdog_reset(void) "CMSDK APB watchdog: reset"
cmsdk_apb_watchdog_lock(uint32_t lock) "CMSDK APB watchdog: lock %" PRIu32
# wdt-aspeed.c
aspeed_wdt_read(uint64_t addr, uint32_t size) "@0x%" PRIx64 " size=%d"
aspeed_wdt_write(uint64_t addr, uint32_t size, uint64_t data) "@0x%" PRIx64 " size=%d value=0x%"PRIx64
# spapr_watchdog.c
spapr_watchdog_start(uint64_t flags, uint64_t num, uint64_t timeout) "Flags 0x%" PRIx64 " num=%" PRId64 " %" PRIu64 "ms"
spapr_watchdog_stop(uint64_t num, uint64_t ret) "num=%" PRIu64 " ret=%" PRId64
spapr_watchdog_query(uint64_t caps) "caps=0x%" PRIx64
spapr_watchdog_query_lpm(uint64_t caps) "caps=0x%" PRIx64
spapr_watchdog_expired(uint64_t num, unsigned action) "num=%" PRIu64 " action=%u"