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375 lines
12 KiB
375 lines
12 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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#ifndef _POWERPC_RTAS_H |
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#define _POWERPC_RTAS_H |
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#ifdef __KERNEL__ |
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#include <linux/spinlock.h> |
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#include <asm/page.h> |
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#include <asm/rtas-types.h> |
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#include <linux/time.h> |
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#include <linux/cpumask.h> |
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/* |
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* Definitions for talking to the RTAS on CHRP machines. |
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* |
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* Copyright (C) 2001 Peter Bergner |
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* Copyright (C) 2001 PPC 64 Team, IBM Corp |
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*/ |
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#define RTAS_UNKNOWN_SERVICE (-1) |
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#define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */ |
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/* Buffer size for ppc_rtas system call. */ |
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#define RTAS_RMOBUF_MAX (64 * 1024) |
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/* RTAS return status codes */ |
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#define RTAS_NOT_SUSPENDABLE -9004 |
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#define RTAS_BUSY -2 /* RTAS Busy */ |
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#define RTAS_EXTENDED_DELAY_MIN 9900 |
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#define RTAS_EXTENDED_DELAY_MAX 9905 |
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/* |
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* In general to call RTAS use rtas_token("string") to lookup |
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* an RTAS token for the given string (e.g. "event-scan"). |
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* To actually perform the call use |
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* ret = rtas_call(token, n_in, n_out, ...) |
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* Where n_in is the number of input parameters and |
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* n_out is the number of output parameters |
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* |
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* If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE |
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* will be returned as a token. rtas_call() does look for this |
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* token and error out gracefully so rtas_call(rtas_token("str"), ...) |
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* may be safely used for one-shot calls to RTAS. |
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* |
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*/ |
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/* RTAS event classes */ |
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#define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ |
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#define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ |
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#define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ |
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#define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */ |
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#define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff |
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/* RTAS event severity */ |
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#define RTAS_SEVERITY_FATAL 0x5 |
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#define RTAS_SEVERITY_ERROR 0x4 |
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#define RTAS_SEVERITY_ERROR_SYNC 0x3 |
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#define RTAS_SEVERITY_WARNING 0x2 |
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#define RTAS_SEVERITY_EVENT 0x1 |
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#define RTAS_SEVERITY_NO_ERROR 0x0 |
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/* RTAS event disposition */ |
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#define RTAS_DISP_FULLY_RECOVERED 0x0 |
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#define RTAS_DISP_LIMITED_RECOVERY 0x1 |
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#define RTAS_DISP_NOT_RECOVERED 0x2 |
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/* RTAS event initiator */ |
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#define RTAS_INITIATOR_UNKNOWN 0x0 |
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#define RTAS_INITIATOR_CPU 0x1 |
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#define RTAS_INITIATOR_PCI 0x2 |
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#define RTAS_INITIATOR_ISA 0x3 |
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#define RTAS_INITIATOR_MEMORY 0x4 |
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#define RTAS_INITIATOR_POWERMGM 0x5 |
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/* RTAS event target */ |
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#define RTAS_TARGET_UNKNOWN 0x0 |
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#define RTAS_TARGET_CPU 0x1 |
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#define RTAS_TARGET_PCI 0x2 |
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#define RTAS_TARGET_ISA 0x3 |
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#define RTAS_TARGET_MEMORY 0x4 |
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#define RTAS_TARGET_POWERMGM 0x5 |
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/* RTAS event type */ |
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#define RTAS_TYPE_RETRY 0x01 |
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#define RTAS_TYPE_TCE_ERR 0x02 |
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#define RTAS_TYPE_INTERN_DEV_FAIL 0x03 |
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#define RTAS_TYPE_TIMEOUT 0x04 |
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#define RTAS_TYPE_DATA_PARITY 0x05 |
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#define RTAS_TYPE_ADDR_PARITY 0x06 |
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#define RTAS_TYPE_CACHE_PARITY 0x07 |
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#define RTAS_TYPE_ADDR_INVALID 0x08 |
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#define RTAS_TYPE_ECC_UNCORR 0x09 |
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#define RTAS_TYPE_ECC_CORR 0x0a |
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#define RTAS_TYPE_EPOW 0x40 |
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#define RTAS_TYPE_PLATFORM 0xE0 |
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#define RTAS_TYPE_IO 0xE1 |
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#define RTAS_TYPE_INFO 0xE2 |
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#define RTAS_TYPE_DEALLOC 0xE3 |
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#define RTAS_TYPE_DUMP 0xE4 |
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#define RTAS_TYPE_HOTPLUG 0xE5 |
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/* I don't add PowerMGM events right now, this is a different topic */ |
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#define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 |
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#define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 |
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#define RTAS_TYPE_PMGM_LID_OPEN 0x62 |
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#define RTAS_TYPE_PMGM_LID_CLOSE 0x63 |
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#define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 |
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#define RTAS_TYPE_PMGM_WAKE_BTN 0x65 |
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#define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 |
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#define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 |
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#define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 |
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#define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 |
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#define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a |
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#define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b |
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#define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c |
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#define RTAS_TYPE_PMGM_RING_INDICATE 0x6d |
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#define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e |
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#define RTAS_TYPE_PMGM_TIME_ALARM 0x6f |
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#define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 |
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#define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 |
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/* Platform Resource Reassignment Notification */ |
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#define RTAS_TYPE_PRRN 0xA0 |
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/* RTAS check-exception vector offset */ |
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#define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 |
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static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog) |
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{ |
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return (elog->byte1 & 0xE0) >> 5; |
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} |
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static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog) |
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{ |
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return (elog->byte1 & 0x18) >> 3; |
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} |
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static inline |
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void rtas_set_disposition_recovered(struct rtas_error_log *elog) |
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{ |
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elog->byte1 &= ~0x18; |
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elog->byte1 |= (RTAS_DISP_FULLY_RECOVERED << 3); |
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} |
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static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog) |
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{ |
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return (elog->byte1 & 0x04) >> 2; |
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} |
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static inline uint8_t rtas_error_initiator(const struct rtas_error_log *elog) |
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{ |
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return (elog->byte2 & 0xf0) >> 4; |
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} |
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#define rtas_error_type(x) ((x)->byte3) |
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static inline |
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uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog) |
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{ |
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return be32_to_cpu(elog->extended_log_length); |
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} |
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#define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14 |
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#define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) |
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static |
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inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log) |
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{ |
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return ext_log->byte2 & 0x0F; |
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} |
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static |
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inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log) |
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{ |
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return be32_to_cpu(ext_log->company_id); |
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} |
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/* pSeries event log format */ |
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/* Two bytes ASCII section IDs */ |
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#define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H') |
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#define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H') |
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#define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S') |
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#define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H') |
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#define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T') |
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#define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S') |
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#define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H') |
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#define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W') |
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#define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P') |
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#define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R') |
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#define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M') |
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#define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P') |
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#define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E') |
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#define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I') |
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#define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H') |
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#define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D') |
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#define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P') |
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#define PSERIES_ELOG_SECT_ID_MCE (('M' << 8) | 'C') |
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static |
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inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect) |
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{ |
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return be16_to_cpu(sect->id); |
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} |
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static |
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inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect) |
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{ |
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return be16_to_cpu(sect->length); |
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} |
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#define PSERIES_HP_ELOG_RESOURCE_CPU 1 |
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#define PSERIES_HP_ELOG_RESOURCE_MEM 2 |
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#define PSERIES_HP_ELOG_RESOURCE_SLOT 3 |
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#define PSERIES_HP_ELOG_RESOURCE_PHB 4 |
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#define PSERIES_HP_ELOG_RESOURCE_PMEM 6 |
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#define PSERIES_HP_ELOG_ACTION_ADD 1 |
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#define PSERIES_HP_ELOG_ACTION_REMOVE 2 |
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#define PSERIES_HP_ELOG_ID_DRC_NAME 1 |
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#define PSERIES_HP_ELOG_ID_DRC_INDEX 2 |
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#define PSERIES_HP_ELOG_ID_DRC_COUNT 3 |
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#define PSERIES_HP_ELOG_ID_DRC_IC 4 |
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struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, |
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uint16_t section_id); |
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/* |
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* This can be set by the rtas_flash module so that it can get called |
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* as the absolutely last thing before the kernel terminates. |
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*/ |
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extern void (*rtas_flash_term_hook)(int); |
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extern struct rtas_t rtas; |
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extern int rtas_token(const char *service); |
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extern int rtas_service_present(const char *service); |
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extern int rtas_call(int token, int, int, int *, ...); |
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int rtas_call_reentrant(int token, int nargs, int nret, int *outputs, ...); |
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void rtas_call_unlocked(struct rtas_args *args, int token, int nargs, |
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int nret, ...); |
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extern void __noreturn rtas_restart(char *cmd); |
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extern void rtas_power_off(void); |
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extern void __noreturn rtas_halt(void); |
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extern void rtas_os_term(char *str); |
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extern int rtas_get_sensor(int sensor, int index, int *state); |
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extern int rtas_get_sensor_fast(int sensor, int index, int *state); |
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extern int rtas_get_power_level(int powerdomain, int *level); |
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extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); |
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extern bool rtas_indicator_present(int token, int *maxindex); |
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extern int rtas_set_indicator(int indicator, int index, int new_value); |
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extern int rtas_set_indicator_fast(int indicator, int index, int new_value); |
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extern void rtas_progress(char *s, unsigned short hex); |
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extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); |
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extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); |
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extern int rtas_ibm_suspend_me(u64 handle); |
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struct rtc_time; |
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extern time64_t rtas_get_boot_time(void); |
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extern void rtas_get_rtc_time(struct rtc_time *rtc_time); |
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extern int rtas_set_rtc_time(struct rtc_time *rtc_time); |
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extern unsigned int rtas_busy_delay_time(int status); |
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extern unsigned int rtas_busy_delay(int status); |
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extern int early_init_dt_scan_rtas(unsigned long node, |
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const char *uname, int depth, void *data); |
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extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); |
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#ifdef CONFIG_PPC_PSERIES |
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extern time64_t last_rtas_event; |
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extern int clobbering_unread_rtas_event(void); |
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extern int pseries_devicetree_update(s32 scope); |
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extern void post_mobility_fixup(void); |
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#else |
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static inline int clobbering_unread_rtas_event(void) { return 0; } |
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#endif |
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#ifdef CONFIG_PPC_RTAS_DAEMON |
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extern void rtas_cancel_event_scan(void); |
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#else |
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static inline void rtas_cancel_event_scan(void) { } |
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#endif |
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/* Error types logged. */ |
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#define ERR_FLAG_ALREADY_LOGGED 0x0 |
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#define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ |
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#define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ |
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#define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */ |
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#define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */ |
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/* All the types and not flags */ |
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#define ERR_TYPE_MASK \ |
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(ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ) |
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#define RTAS_DEBUG KERN_DEBUG "RTAS: " |
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#define RTAS_ERROR_LOG_MAX 2048 |
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/* |
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* Return the firmware-specified size of the error log buffer |
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* for all rtas calls that require an error buffer argument. |
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* This includes 'check-exception' and 'rtas-last-error'. |
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*/ |
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extern int rtas_get_error_log_max(void); |
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/* Event Scan Parameters */ |
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#define EVENT_SCAN_ALL_EVENTS 0xf0000000 |
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#define SURVEILLANCE_TOKEN 9000 |
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#define LOG_NUMBER 64 /* must be a power of two */ |
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#define LOG_NUMBER_MASK (LOG_NUMBER-1) |
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/* Some RTAS ops require a data buffer and that buffer must be < 4G. |
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* Rather than having a memory allocator, just use this buffer |
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* (get the lock first), make the RTAS call. Copy the data instead |
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* of holding the buffer for long. |
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*/ |
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#define RTAS_DATA_BUF_SIZE 4096 |
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extern spinlock_t rtas_data_buf_lock; |
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extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; |
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/* RMO buffer reserved for user-space RTAS use */ |
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extern unsigned long rtas_rmo_buf; |
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#define GLOBAL_INTERRUPT_QUEUE 9005 |
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/** |
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* rtas_config_addr - Format a busno, devfn and reg for RTAS. |
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* @busno: The bus number. |
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* @devfn: The device and function number as encoded by PCI_DEVFN(). |
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* @reg: The register number. |
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* |
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* This function encodes the given busno, devfn and register number as |
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* required for RTAS calls that take a "config_addr" parameter. |
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* See PAPR requirement 7.3.4-1 for more info. |
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*/ |
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static inline u32 rtas_config_addr(int busno, int devfn, int reg) |
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{ |
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return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | |
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(devfn << 8) | (reg & 0xff); |
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} |
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extern void rtas_give_timebase(void); |
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extern void rtas_take_timebase(void); |
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#ifdef CONFIG_PPC_RTAS |
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static inline int page_is_rtas_user_buf(unsigned long pfn) |
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{ |
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unsigned long paddr = (pfn << PAGE_SHIFT); |
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if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX)) |
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return 1; |
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return 0; |
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} |
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/* Not the best place to put pSeries_coalesce_init, will be fixed when we |
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* move some of the rtas suspend-me stuff to pseries */ |
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extern void pSeries_coalesce_init(void); |
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void rtas_initialize(void); |
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#else |
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static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} |
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static inline void pSeries_coalesce_init(void) { } |
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static inline void rtas_initialize(void) { }; |
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#endif |
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extern int call_rtas(const char *, int, int, unsigned long *, ...); |
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#ifdef CONFIG_HV_PERF_CTRS |
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void read_24x7_sys_info(void); |
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#else |
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static inline void read_24x7_sys_info(void) { } |
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#endif |
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#endif /* __KERNEL__ */ |
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#endif /* _POWERPC_RTAS_H */
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