On 13/07/26 09:48, Ritesh Harjani (IBM) wrote:
Sourabh Jain <[email protected]> writes:
The H_WATCHDOG input and output definitions are currently local to the
pseries watchdog driver. The next patch in this series also needs these
definitions to issue H_WATCHDOG hypercalls outside the watchdog driver.
Move the H_WATCHDOG definitions to a new common header,
asm/papr-watchdog.h, so they can be shared without duplicating the
PAPR watchdog definitions.
No functional changes.
Suggested-by: Ritesh Harjani (IBM) <[email protected]>
Signed-off-by: Sourabh Jain <[email protected]>
---
arch/powerpc/include/asm/papr-watchdog.h | 58 ++++++++++++++++++++++++
drivers/watchdog/pseries-wdt.c | 53 +---------------------
2 files changed, 59 insertions(+), 52 deletions(-)
create mode 100644 arch/powerpc/include/asm/papr-watchdog.h
diff --git a/arch/powerpc/include/asm/papr-watchdog.h
b/arch/powerpc/include/asm/papr-watchdog.h
new file mode 100644
index 000000000000..fb3a511aa861
--- /dev/null
+++ b/arch/powerpc/include/asm/papr-watchdog.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _ASM_POWERPC_CRASHDUMP_PPC64_H
+#define _ASM_POWERPC_CRASHDUMP_PPC64_H
should be _ASM_POWERPC_PAPR_WATCHDOG_H
oops my bad. I will fix it in v3.
+
+/*
+ * H_WATCHDOG Input
+ *
+ * R4: "flags":
+ *
+ * Bits 48-55: "operation"
+ */
+#define PSERIES_WDTF_OP_START 0x100UL /* start timer */
+#define PSERIES_WDTF_OP_STOP 0x200UL /* stop timer */
+#define PSERIES_WDTF_OP_QUERY 0x300UL /* query timer capabilities */
+
+/*
+ * Bits 56-63: "timeoutAction" (for "Start Watchdog" only)
+ */
+#define PSERIES_WDTF_ACTION_HARD_POWEROFF 0x1UL /* poweroff */
+#define PSERIES_WDTF_ACTION_HARD_RESTART 0x2UL /* restart */
+#define PSERIES_WDTF_ACTION_DUMP_RESTART 0x3UL /* dump + restart */
+
+/*
+ * H_WATCHDOG Output
+ *
+ * R3: Return code
+ *
+ * H_SUCCESS The operation completed.
+ *
+ * H_BUSY The hypervisor is too busy; retry the operation.
+ *
+ * H_PARAMETER The given "flags" are somehow invalid. Either the
+ * "operation" or "timeoutAction" is invalid, or a
+ * reserved bit is set.
+ *
+ * H_P2 The given "watchdogNumber" is zero or exceeds the
+ * supported maximum value.
+ *
+ * H_P3 The given "timeoutInMs" is below the supported
+ * minimum value.
+ *
+ * H_NOOP The given "watchdogNumber" is already stopped.
+ *
+ * H_HARDWARE The operation failed for ineffable reasons.
+ *
+ * H_FUNCTION The H_WATCHDOG hypercall is not supported by this
+ * hypervisor.
+ *
+ * R4:
+ *
+ * - For the "Query Watchdog Capabilities" operation, a 64-bit
+ * structure:
+ */
+#define PSERIES_WDTQ_MIN_TIMEOUT(cap) (((cap) >> 48) & 0xffff)
+#define PSERIES_WDTQ_MAX_NUMBER(cap) (((cap) >> 32) & 0xffff)
+
+#endif /* _ASM_POWERPC_CRASHDUMP_PPC64_H */
ditto
