1b8b572e1SStephen Rothwell #ifndef _POWERPC_RTAS_H 2b8b572e1SStephen Rothwell #define _POWERPC_RTAS_H 3b8b572e1SStephen Rothwell #ifdef __KERNEL__ 4b8b572e1SStephen Rothwell 5b8b572e1SStephen Rothwell #include <linux/spinlock.h> 6b8b572e1SStephen Rothwell #include <asm/page.h> 7e4a9616cSHari Bathini #include <linux/time.h> 8b8b572e1SStephen Rothwell 9b8b572e1SStephen Rothwell /* 10b8b572e1SStephen Rothwell * Definitions for talking to the RTAS on CHRP machines. 11b8b572e1SStephen Rothwell * 12b8b572e1SStephen Rothwell * Copyright (C) 2001 Peter Bergner 13b8b572e1SStephen Rothwell * Copyright (C) 2001 PPC 64 Team, IBM Corp 14b8b572e1SStephen Rothwell * 15b8b572e1SStephen Rothwell * This program is free software; you can redistribute it and/or 16b8b572e1SStephen Rothwell * modify it under the terms of the GNU General Public License 17b8b572e1SStephen Rothwell * as published by the Free Software Foundation; either version 18b8b572e1SStephen Rothwell * 2 of the License, or (at your option) any later version. 19b8b572e1SStephen Rothwell */ 20b8b572e1SStephen Rothwell 21b8b572e1SStephen Rothwell #define RTAS_UNKNOWN_SERVICE (-1) 22fe333321SIngo Molnar #define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */ 23b8b572e1SStephen Rothwell 24b8b572e1SStephen Rothwell /* Buffer size for ppc_rtas system call. */ 25b8b572e1SStephen Rothwell #define RTAS_RMOBUF_MAX (64 * 1024) 26b8b572e1SStephen Rothwell 27b8b572e1SStephen Rothwell /* RTAS return status codes */ 28b8b572e1SStephen Rothwell #define RTAS_NOT_SUSPENDABLE -9004 29b8b572e1SStephen Rothwell #define RTAS_BUSY -2 /* RTAS Busy */ 30b8b572e1SStephen Rothwell #define RTAS_EXTENDED_DELAY_MIN 9900 31b8b572e1SStephen Rothwell #define RTAS_EXTENDED_DELAY_MAX 9905 32b8b572e1SStephen Rothwell 33b8b572e1SStephen Rothwell /* 34b8b572e1SStephen Rothwell * In general to call RTAS use rtas_token("string") to lookup 35b8b572e1SStephen Rothwell * an RTAS token for the given string (e.g. "event-scan"). 36b8b572e1SStephen Rothwell * To actually perform the call use 37b8b572e1SStephen Rothwell * ret = rtas_call(token, n_in, n_out, ...) 38b8b572e1SStephen Rothwell * Where n_in is the number of input parameters and 39b8b572e1SStephen Rothwell * n_out is the number of output parameters 40b8b572e1SStephen Rothwell * 41b8b572e1SStephen Rothwell * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE 42b8b572e1SStephen Rothwell * will be returned as a token. rtas_call() does look for this 43b8b572e1SStephen Rothwell * token and error out gracefully so rtas_call(rtas_token("str"), ...) 44b8b572e1SStephen Rothwell * may be safely used for one-shot calls to RTAS. 45b8b572e1SStephen Rothwell * 46b8b572e1SStephen Rothwell */ 47b8b572e1SStephen Rothwell 4827128264SAnton Blanchard typedef __be32 rtas_arg_t; 49b8b572e1SStephen Rothwell 50b8b572e1SStephen Rothwell struct rtas_args { 5127128264SAnton Blanchard __be32 token; 5227128264SAnton Blanchard __be32 nargs; 5327128264SAnton Blanchard __be32 nret; 54b8b572e1SStephen Rothwell rtas_arg_t args[16]; 55b8b572e1SStephen Rothwell rtas_arg_t *rets; /* Pointer to return values in args[]. */ 56b8b572e1SStephen Rothwell }; 57b8b572e1SStephen Rothwell 58b8b572e1SStephen Rothwell struct rtas_t { 59b8b572e1SStephen Rothwell unsigned long entry; /* physical address pointer */ 60b8b572e1SStephen Rothwell unsigned long base; /* physical address pointer */ 61b8b572e1SStephen Rothwell unsigned long size; 62445c8951SThomas Gleixner arch_spinlock_t lock; 63b8b572e1SStephen Rothwell struct rtas_args args; 64b8b572e1SStephen Rothwell struct device_node *dev; /* virtual address pointer */ 65b8b572e1SStephen Rothwell }; 66b8b572e1SStephen Rothwell 678fe93f8dSBrian King struct rtas_suspend_me_data { 688fe93f8dSBrian King atomic_t working; /* number of cpus accessing this struct */ 698fe93f8dSBrian King atomic_t done; 708fe93f8dSBrian King int token; /* ibm,suspend-me */ 718fe93f8dSBrian King atomic_t error; 728fe93f8dSBrian King struct completion *complete; /* wait on this until working == 0 */ 738fe93f8dSBrian King }; 748fe93f8dSBrian King 75b8b572e1SStephen Rothwell /* RTAS event classes */ 76b8b572e1SStephen Rothwell #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ 77b8b572e1SStephen Rothwell #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ 78b8b572e1SStephen Rothwell #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ 794a9f9506SAnton Blanchard #define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */ 804a9f9506SAnton Blanchard #define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff 81b8b572e1SStephen Rothwell 82b8b572e1SStephen Rothwell /* RTAS event severity */ 83b8b572e1SStephen Rothwell #define RTAS_SEVERITY_FATAL 0x5 84b8b572e1SStephen Rothwell #define RTAS_SEVERITY_ERROR 0x4 85b8b572e1SStephen Rothwell #define RTAS_SEVERITY_ERROR_SYNC 0x3 86b8b572e1SStephen Rothwell #define RTAS_SEVERITY_WARNING 0x2 87b8b572e1SStephen Rothwell #define RTAS_SEVERITY_EVENT 0x1 88b8b572e1SStephen Rothwell #define RTAS_SEVERITY_NO_ERROR 0x0 89b8b572e1SStephen Rothwell 90b8b572e1SStephen Rothwell /* RTAS event disposition */ 91b8b572e1SStephen Rothwell #define RTAS_DISP_FULLY_RECOVERED 0x0 92b8b572e1SStephen Rothwell #define RTAS_DISP_LIMITED_RECOVERY 0x1 93b8b572e1SStephen Rothwell #define RTAS_DISP_NOT_RECOVERED 0x2 94b8b572e1SStephen Rothwell 95b8b572e1SStephen Rothwell /* RTAS event initiator */ 96b8b572e1SStephen Rothwell #define RTAS_INITIATOR_UNKNOWN 0x0 97b8b572e1SStephen Rothwell #define RTAS_INITIATOR_CPU 0x1 98b8b572e1SStephen Rothwell #define RTAS_INITIATOR_PCI 0x2 99b8b572e1SStephen Rothwell #define RTAS_INITIATOR_ISA 0x3 100b8b572e1SStephen Rothwell #define RTAS_INITIATOR_MEMORY 0x4 101b8b572e1SStephen Rothwell #define RTAS_INITIATOR_POWERMGM 0x5 102b8b572e1SStephen Rothwell 103b8b572e1SStephen Rothwell /* RTAS event target */ 104b8b572e1SStephen Rothwell #define RTAS_TARGET_UNKNOWN 0x0 105b8b572e1SStephen Rothwell #define RTAS_TARGET_CPU 0x1 106b8b572e1SStephen Rothwell #define RTAS_TARGET_PCI 0x2 107b8b572e1SStephen Rothwell #define RTAS_TARGET_ISA 0x3 108b8b572e1SStephen Rothwell #define RTAS_TARGET_MEMORY 0x4 109b8b572e1SStephen Rothwell #define RTAS_TARGET_POWERMGM 0x5 110b8b572e1SStephen Rothwell 111b8b572e1SStephen Rothwell /* RTAS event type */ 112b8b572e1SStephen Rothwell #define RTAS_TYPE_RETRY 0x01 113b8b572e1SStephen Rothwell #define RTAS_TYPE_TCE_ERR 0x02 114b8b572e1SStephen Rothwell #define RTAS_TYPE_INTERN_DEV_FAIL 0x03 115b8b572e1SStephen Rothwell #define RTAS_TYPE_TIMEOUT 0x04 116b8b572e1SStephen Rothwell #define RTAS_TYPE_DATA_PARITY 0x05 117b8b572e1SStephen Rothwell #define RTAS_TYPE_ADDR_PARITY 0x06 118b8b572e1SStephen Rothwell #define RTAS_TYPE_CACHE_PARITY 0x07 119b8b572e1SStephen Rothwell #define RTAS_TYPE_ADDR_INVALID 0x08 120b8b572e1SStephen Rothwell #define RTAS_TYPE_ECC_UNCORR 0x09 121b8b572e1SStephen Rothwell #define RTAS_TYPE_ECC_CORR 0x0a 122b8b572e1SStephen Rothwell #define RTAS_TYPE_EPOW 0x40 123b8b572e1SStephen Rothwell #define RTAS_TYPE_PLATFORM 0xE0 124b8b572e1SStephen Rothwell #define RTAS_TYPE_IO 0xE1 125b8b572e1SStephen Rothwell #define RTAS_TYPE_INFO 0xE2 126b8b572e1SStephen Rothwell #define RTAS_TYPE_DEALLOC 0xE3 127b8b572e1SStephen Rothwell #define RTAS_TYPE_DUMP 0xE4 128b8b572e1SStephen Rothwell /* I don't add PowerMGM events right now, this is a different topic */ 129b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 130b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 131b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LID_OPEN 0x62 132b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LID_CLOSE 0x63 133b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 134b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_WAKE_BTN 0x65 135b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 136b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 137b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 138b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 139b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a 140b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b 141b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c 142b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d 143b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e 144b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f 145b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 146b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 14749c68a85SJesse Larrew /* Platform Resource Reassignment Notification */ 14849c68a85SJesse Larrew #define RTAS_TYPE_PRRN 0xA0 149b8b572e1SStephen Rothwell 150b08e281bSMark Nelson /* RTAS check-exception vector offset */ 151b08e281bSMark Nelson #define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 152b08e281bSMark Nelson 153b8b572e1SStephen Rothwell struct rtas_error_log { 154a08a53eaSGreg Kurz /* Byte 0 */ 155a08a53eaSGreg Kurz uint8_t byte0; /* Architectural version */ 156a08a53eaSGreg Kurz 157a08a53eaSGreg Kurz /* Byte 1 */ 158a08a53eaSGreg Kurz uint8_t byte1; 159a08a53eaSGreg Kurz /* XXXXXXXX 160a08a53eaSGreg Kurz * XXX 3: Severity level of error 161a08a53eaSGreg Kurz * XX 2: Degree of recovery 162a08a53eaSGreg Kurz * X 1: Extended log present? 163a08a53eaSGreg Kurz * XX 2: Reserved 164a08a53eaSGreg Kurz */ 165a08a53eaSGreg Kurz 166a08a53eaSGreg Kurz /* Byte 2 */ 167a08a53eaSGreg Kurz uint8_t byte2; 168a08a53eaSGreg Kurz /* XXXXXXXX 169a08a53eaSGreg Kurz * XXXX 4: Initiator of event 170a08a53eaSGreg Kurz * XXXX 4: Target of failed operation 171a08a53eaSGreg Kurz */ 172a08a53eaSGreg Kurz uint8_t byte3; /* General event or error*/ 173a08a53eaSGreg Kurz __be32 extended_log_length; /* length in bytes */ 1744cb46380STseng-Hui (Frank) Lin unsigned char buffer[1]; /* Start of extended log */ 1754cb46380STseng-Hui (Frank) Lin /* Variable length. */ 1764cb46380STseng-Hui (Frank) Lin }; 1774cb46380STseng-Hui (Frank) Lin 178a08a53eaSGreg Kurz static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog) 179a08a53eaSGreg Kurz { 180a08a53eaSGreg Kurz return (elog->byte1 & 0xE0) >> 5; 181a08a53eaSGreg Kurz } 182a08a53eaSGreg Kurz 183a08a53eaSGreg Kurz static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog) 184a08a53eaSGreg Kurz { 185a08a53eaSGreg Kurz return (elog->byte1 & 0x18) >> 3; 186a08a53eaSGreg Kurz } 187a08a53eaSGreg Kurz 188a08a53eaSGreg Kurz static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog) 189a08a53eaSGreg Kurz { 190a08a53eaSGreg Kurz return (elog->byte1 & 0x04) >> 2; 191a08a53eaSGreg Kurz } 192a08a53eaSGreg Kurz 193a08a53eaSGreg Kurz #define rtas_error_type(x) ((x)->byte3) 194a08a53eaSGreg Kurz 195a08a53eaSGreg Kurz static inline 196a08a53eaSGreg Kurz uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog) 197a08a53eaSGreg Kurz { 198a08a53eaSGreg Kurz return be32_to_cpu(elog->extended_log_length); 199a08a53eaSGreg Kurz } 200a08a53eaSGreg Kurz 2014cb46380STseng-Hui (Frank) Lin #define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14 2024cb46380STseng-Hui (Frank) Lin 2034cb46380STseng-Hui (Frank) Lin #define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) 2044cb46380STseng-Hui (Frank) Lin 2054cb46380STseng-Hui (Frank) Lin /* RTAS general extended event log, Version 6. The extended log starts 2064cb46380STseng-Hui (Frank) Lin * from "buffer" field of struct rtas_error_log defined above. 2074cb46380STseng-Hui (Frank) Lin */ 2084cb46380STseng-Hui (Frank) Lin struct rtas_ext_event_log_v6 { 2094cb46380STseng-Hui (Frank) Lin /* Byte 0 */ 210a08a53eaSGreg Kurz uint8_t byte0; 211a08a53eaSGreg Kurz /* XXXXXXXX 212a08a53eaSGreg Kurz * X 1: Log valid 213a08a53eaSGreg Kurz * X 1: Unrecoverable error 214a08a53eaSGreg Kurz * X 1: Recoverable (correctable or successfully retried) 215a08a53eaSGreg Kurz * X 1: Bypassed unrecoverable error (degraded operation) 216a08a53eaSGreg Kurz * X 1: Predictive error 217a08a53eaSGreg Kurz * X 1: "New" log (always 1 for data returned from RTAS) 218a08a53eaSGreg Kurz * X 1: Big Endian 219a08a53eaSGreg Kurz * X 1: Reserved 220a08a53eaSGreg Kurz */ 221a08a53eaSGreg Kurz 2224cb46380STseng-Hui (Frank) Lin /* Byte 1 */ 223a08a53eaSGreg Kurz uint8_t byte1; /* reserved */ 224a08a53eaSGreg Kurz 2254cb46380STseng-Hui (Frank) Lin /* Byte 2 */ 226a08a53eaSGreg Kurz uint8_t byte2; 227a08a53eaSGreg Kurz /* XXXXXXXX 228a08a53eaSGreg Kurz * X 1: Set to 1 (indicating log is in PowerPC format) 229a08a53eaSGreg Kurz * XXX 3: Reserved 230a08a53eaSGreg Kurz * XXXX 4: Log format used for bytes 12-2047 231a08a53eaSGreg Kurz */ 232a08a53eaSGreg Kurz 2334cb46380STseng-Hui (Frank) Lin /* Byte 3 */ 234a08a53eaSGreg Kurz uint8_t byte3; /* reserved */ 2354cb46380STseng-Hui (Frank) Lin /* Byte 4-11 */ 2364cb46380STseng-Hui (Frank) Lin uint8_t reserved[8]; /* reserved */ 2374cb46380STseng-Hui (Frank) Lin /* Byte 12-15 */ 238a08a53eaSGreg Kurz __be32 company_id; /* Company ID of the company */ 2394cb46380STseng-Hui (Frank) Lin /* that defines the format for */ 2404cb46380STseng-Hui (Frank) Lin /* the vendor specific log type */ 2414cb46380STseng-Hui (Frank) Lin /* Byte 16-end of log */ 2424cb46380STseng-Hui (Frank) Lin uint8_t vendor_log[1]; /* Start of vendor specific log */ 2434cb46380STseng-Hui (Frank) Lin /* Variable length. */ 244b8b572e1SStephen Rothwell }; 245b8b572e1SStephen Rothwell 246a08a53eaSGreg Kurz static 247a08a53eaSGreg Kurz inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log) 248a08a53eaSGreg Kurz { 249a08a53eaSGreg Kurz return ext_log->byte2 & 0x0F; 250a08a53eaSGreg Kurz } 251a08a53eaSGreg Kurz 252a08a53eaSGreg Kurz static 253a08a53eaSGreg Kurz inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log) 254a08a53eaSGreg Kurz { 255a08a53eaSGreg Kurz return be32_to_cpu(ext_log->company_id); 256a08a53eaSGreg Kurz } 257a08a53eaSGreg Kurz 2586431f208SAnton Blanchard /* pSeries event log format */ 2596431f208SAnton Blanchard 2606431f208SAnton Blanchard /* Two bytes ASCII section IDs */ 2616431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H') 2626431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H') 2636431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S') 2646431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H') 2656431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T') 2666431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S') 2676431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H') 2686431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W') 2696431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P') 2706431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R') 2716431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M') 2726431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P') 2736431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E') 2746431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I') 2756431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H') 2766431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D') 2776431f208SAnton Blanchard 2786431f208SAnton Blanchard /* Vendor specific Platform Event Log Format, Version 6, section header */ 2796431f208SAnton Blanchard struct pseries_errorlog { 280a08a53eaSGreg Kurz __be16 id; /* 0x00 2-byte ASCII section ID */ 281a08a53eaSGreg Kurz __be16 length; /* 0x02 Section length in bytes */ 2826431f208SAnton Blanchard uint8_t version; /* 0x04 Section version */ 2836431f208SAnton Blanchard uint8_t subtype; /* 0x05 Section subtype */ 284a08a53eaSGreg Kurz __be16 creator_component; /* 0x06 Creator component ID */ 2856431f208SAnton Blanchard uint8_t data[]; /* 0x08 Start of section data */ 2866431f208SAnton Blanchard }; 2876431f208SAnton Blanchard 288a08a53eaSGreg Kurz static 289a08a53eaSGreg Kurz inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect) 290a08a53eaSGreg Kurz { 291a08a53eaSGreg Kurz return be16_to_cpu(sect->id); 292a08a53eaSGreg Kurz } 293a08a53eaSGreg Kurz 294a08a53eaSGreg Kurz static 295a08a53eaSGreg Kurz inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect) 296a08a53eaSGreg Kurz { 297a08a53eaSGreg Kurz return be16_to_cpu(sect->length); 298a08a53eaSGreg Kurz } 299a08a53eaSGreg Kurz 3006431f208SAnton Blanchard struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, 3016431f208SAnton Blanchard uint16_t section_id); 3026431f208SAnton Blanchard 303b8b572e1SStephen Rothwell /* 304b8b572e1SStephen Rothwell * This can be set by the rtas_flash module so that it can get called 305b8b572e1SStephen Rothwell * as the absolutely last thing before the kernel terminates. 306b8b572e1SStephen Rothwell */ 307b8b572e1SStephen Rothwell extern void (*rtas_flash_term_hook)(int); 308b8b572e1SStephen Rothwell 309b8b572e1SStephen Rothwell extern struct rtas_t rtas; 310b8b572e1SStephen Rothwell 311b8b572e1SStephen Rothwell extern void enter_rtas(unsigned long); 312b8b572e1SStephen Rothwell extern int rtas_token(const char *service); 313b8b572e1SStephen Rothwell extern int rtas_service_present(const char *service); 314b8b572e1SStephen Rothwell extern int rtas_call(int token, int, int, int *, ...); 315b8b572e1SStephen Rothwell extern void rtas_restart(char *cmd); 316b8b572e1SStephen Rothwell extern void rtas_power_off(void); 317b8b572e1SStephen Rothwell extern void rtas_halt(void); 318b8b572e1SStephen Rothwell extern void rtas_os_term(char *str); 319b8b572e1SStephen Rothwell extern int rtas_get_sensor(int sensor, int index, int *state); 320b8b572e1SStephen Rothwell extern int rtas_get_power_level(int powerdomain, int *level); 321b8b572e1SStephen Rothwell extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); 322edc72ac4SNathan Lynch extern bool rtas_indicator_present(int token, int *maxindex); 323b8b572e1SStephen Rothwell extern int rtas_set_indicator(int indicator, int index, int new_value); 324b8b572e1SStephen Rothwell extern int rtas_set_indicator_fast(int indicator, int index, int new_value); 325b8b572e1SStephen Rothwell extern void rtas_progress(char *s, unsigned short hex); 326b8b572e1SStephen Rothwell extern void rtas_initialize(void); 3278fe93f8dSBrian King extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); 3288fe93f8dSBrian King extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); 329120496acSRobert Jennings extern int rtas_online_cpus_mask(cpumask_var_t cpus); 330120496acSRobert Jennings extern int rtas_offline_cpus_mask(cpumask_var_t cpus); 331c03e7374STyrel Datwyler extern int rtas_ibm_suspend_me(u64 handle); 332b8b572e1SStephen Rothwell 333b8b572e1SStephen Rothwell struct rtc_time; 334b8b572e1SStephen Rothwell extern unsigned long rtas_get_boot_time(void); 335b8b572e1SStephen Rothwell extern void rtas_get_rtc_time(struct rtc_time *rtc_time); 336b8b572e1SStephen Rothwell extern int rtas_set_rtc_time(struct rtc_time *rtc_time); 337b8b572e1SStephen Rothwell 338b8b572e1SStephen Rothwell extern unsigned int rtas_busy_delay_time(int status); 339b8b572e1SStephen Rothwell extern unsigned int rtas_busy_delay(int status); 340b8b572e1SStephen Rothwell 341b8b572e1SStephen Rothwell extern int early_init_dt_scan_rtas(unsigned long node, 342b8b572e1SStephen Rothwell const char *uname, int depth, void *data); 343b8b572e1SStephen Rothwell 344b8b572e1SStephen Rothwell extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); 345b8b572e1SStephen Rothwell 346762ec157SNathan Fontenot #ifdef CONFIG_PPC_PSERIES 347e4a9616cSHari Bathini extern time64_t last_rtas_event; 34878989f0aSHari Bathini extern int clobbering_unread_rtas_event(void); 349762ec157SNathan Fontenot extern int pseries_devicetree_update(s32 scope); 3506b36ba84SHaren Myneni extern void post_mobility_fixup(void); 35178989f0aSHari Bathini #else 35278989f0aSHari Bathini static inline int clobbering_unread_rtas_event(void) { return 0; } 353762ec157SNathan Fontenot #endif 354762ec157SNathan Fontenot 355df17f56dSRavi K. Nittala #ifdef CONFIG_PPC_RTAS_DAEMON 356df17f56dSRavi K. Nittala extern void rtas_cancel_event_scan(void); 357df17f56dSRavi K. Nittala #else 358df17f56dSRavi K. Nittala static inline void rtas_cancel_event_scan(void) { } 359df17f56dSRavi K. Nittala #endif 360df17f56dSRavi K. Nittala 361b8b572e1SStephen Rothwell /* Error types logged. */ 362b8b572e1SStephen Rothwell #define ERR_FLAG_ALREADY_LOGGED 0x0 363b8b572e1SStephen Rothwell #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ 364b8b572e1SStephen Rothwell #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ 3656c493685SJim Keniston #define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */ 3666c493685SJim Keniston #define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */ 367b8b572e1SStephen Rothwell 368b8b572e1SStephen Rothwell /* All the types and not flags */ 3696c493685SJim Keniston #define ERR_TYPE_MASK \ 3706c493685SJim Keniston (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ) 371b8b572e1SStephen Rothwell 372b8b572e1SStephen Rothwell #define RTAS_DEBUG KERN_DEBUG "RTAS: " 373b8b572e1SStephen Rothwell 374b8b572e1SStephen Rothwell #define RTAS_ERROR_LOG_MAX 2048 375b8b572e1SStephen Rothwell 376b8b572e1SStephen Rothwell /* 377b8b572e1SStephen Rothwell * Return the firmware-specified size of the error log buffer 378b8b572e1SStephen Rothwell * for all rtas calls that require an error buffer argument. 379b8b572e1SStephen Rothwell * This includes 'check-exception' and 'rtas-last-error'. 380b8b572e1SStephen Rothwell */ 381b8b572e1SStephen Rothwell extern int rtas_get_error_log_max(void); 382b8b572e1SStephen Rothwell 383b8b572e1SStephen Rothwell /* Event Scan Parameters */ 384b8b572e1SStephen Rothwell #define EVENT_SCAN_ALL_EVENTS 0xf0000000 385b8b572e1SStephen Rothwell #define SURVEILLANCE_TOKEN 9000 386b8b572e1SStephen Rothwell #define LOG_NUMBER 64 /* must be a power of two */ 387b8b572e1SStephen Rothwell #define LOG_NUMBER_MASK (LOG_NUMBER-1) 388b8b572e1SStephen Rothwell 389b8b572e1SStephen Rothwell /* Some RTAS ops require a data buffer and that buffer must be < 4G. 390b8b572e1SStephen Rothwell * Rather than having a memory allocator, just use this buffer 391b8b572e1SStephen Rothwell * (get the lock first), make the RTAS call. Copy the data instead 392b8b572e1SStephen Rothwell * of holding the buffer for long. 393b8b572e1SStephen Rothwell */ 394b8b572e1SStephen Rothwell 395b8b572e1SStephen Rothwell #define RTAS_DATA_BUF_SIZE 4096 396b8b572e1SStephen Rothwell extern spinlock_t rtas_data_buf_lock; 397b8b572e1SStephen Rothwell extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; 398b8b572e1SStephen Rothwell 399b8b572e1SStephen Rothwell /* RMO buffer reserved for user-space RTAS use */ 400b8b572e1SStephen Rothwell extern unsigned long rtas_rmo_buf; 401b8b572e1SStephen Rothwell 402b8b572e1SStephen Rothwell #define GLOBAL_INTERRUPT_QUEUE 9005 403b8b572e1SStephen Rothwell 404b8b572e1SStephen Rothwell /** 405b8b572e1SStephen Rothwell * rtas_config_addr - Format a busno, devfn and reg for RTAS. 406b8b572e1SStephen Rothwell * @busno: The bus number. 407b8b572e1SStephen Rothwell * @devfn: The device and function number as encoded by PCI_DEVFN(). 408b8b572e1SStephen Rothwell * @reg: The register number. 409b8b572e1SStephen Rothwell * 410b8b572e1SStephen Rothwell * This function encodes the given busno, devfn and register number as 411b8b572e1SStephen Rothwell * required for RTAS calls that take a "config_addr" parameter. 412b8b572e1SStephen Rothwell * See PAPR requirement 7.3.4-1 for more info. 413b8b572e1SStephen Rothwell */ 414b8b572e1SStephen Rothwell static inline u32 rtas_config_addr(int busno, int devfn, int reg) 415b8b572e1SStephen Rothwell { 416b8b572e1SStephen Rothwell return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | 417b8b572e1SStephen Rothwell (devfn << 8) | (reg & 0xff); 418b8b572e1SStephen Rothwell } 419b8b572e1SStephen Rothwell 420061d19f2SPaul Gortmaker extern void rtas_give_timebase(void); 421061d19f2SPaul Gortmaker extern void rtas_take_timebase(void); 422c4007a2fSBenjamin Herrenschmidt 4238a3e3d31Ssukadev@linux.vnet.ibm.com #ifdef CONFIG_PPC_RTAS 4248a3e3d31Ssukadev@linux.vnet.ibm.com static inline int page_is_rtas_user_buf(unsigned long pfn) 4258a3e3d31Ssukadev@linux.vnet.ibm.com { 4268a3e3d31Ssukadev@linux.vnet.ibm.com unsigned long paddr = (pfn << PAGE_SHIFT); 4278a3e3d31Ssukadev@linux.vnet.ibm.com if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX)) 4288a3e3d31Ssukadev@linux.vnet.ibm.com return 1; 4298a3e3d31Ssukadev@linux.vnet.ibm.com return 0; 4308a3e3d31Ssukadev@linux.vnet.ibm.com } 431f459d63eSNathan Fontenot 432f459d63eSNathan Fontenot /* Not the best place to put pSeries_coalesce_init, will be fixed when we 433f459d63eSNathan Fontenot * move some of the rtas suspend-me stuff to pseries */ 434f459d63eSNathan Fontenot extern void pSeries_coalesce_init(void); 4358a3e3d31Ssukadev@linux.vnet.ibm.com #else 4368a3e3d31Ssukadev@linux.vnet.ibm.com static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} 437f459d63eSNathan Fontenot static inline void pSeries_coalesce_init(void) { } 4388a3e3d31Ssukadev@linux.vnet.ibm.com #endif 4398a3e3d31Ssukadev@linux.vnet.ibm.com 440ae3a197eSDavid Howells extern int call_rtas(const char *, int, int, unsigned long *, ...); 441ae3a197eSDavid Howells 442b8b572e1SStephen Rothwell #endif /* __KERNEL__ */ 443b8b572e1SStephen Rothwell #endif /* _POWERPC_RTAS_H */ 444