| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #ifndef _ASM_POWERPC_PAPR_WATCHDOG_H |
| #define _ASM_POWERPC_PAPR_WATCHDOG_H |
| |
| /* |
| * 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 */ |
| |
| /* |
| * R5: "watchdogNumber": |
| * PAPR says use -1 (all ones) to stop all watchdogs. |
| */ |
| #define PSERIES_WDT_NUM_ALL ((unsigned long)-1) |
| |
| /* |
| * 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_PAPR_WATCHDOG_H */ |
