12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2b8b572e1SStephen Rothwell #ifndef _POWERPC_RTAS_H 3b8b572e1SStephen Rothwell #define _POWERPC_RTAS_H 4b8b572e1SStephen Rothwell #ifdef __KERNEL__ 5b8b572e1SStephen Rothwell 6b8b572e1SStephen Rothwell #include <linux/spinlock.h> 7b8b572e1SStephen Rothwell #include <asm/page.h> 8783a015bSLeonardo Bras #include <asm/rtas-types.h> 9e4a9616cSHari Bathini #include <linux/time.h> 108dce6b22STyrel Datwyler #include <linux/cpumask.h> 11b8b572e1SStephen Rothwell 12b8b572e1SStephen Rothwell /* 13b8b572e1SStephen Rothwell * Definitions for talking to the RTAS on CHRP machines. 14b8b572e1SStephen Rothwell * 15b8b572e1SStephen Rothwell * Copyright (C) 2001 Peter Bergner 16b8b572e1SStephen Rothwell * Copyright (C) 2001 PPC 64 Team, IBM Corp 17b8b572e1SStephen Rothwell */ 18b8b572e1SStephen Rothwell 19b8b572e1SStephen Rothwell #define RTAS_UNKNOWN_SERVICE (-1) 20fe333321SIngo Molnar #define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */ 21b8b572e1SStephen Rothwell 22*e5d56763SNathan Lynch /* Memory set aside for sys_rtas to use with calls that need a work area. */ 23*e5d56763SNathan Lynch #define RTAS_USER_REGION_SIZE (64 * 1024) 24b8b572e1SStephen Rothwell 25b8b572e1SStephen Rothwell /* RTAS return status codes */ 26b8b572e1SStephen Rothwell #define RTAS_BUSY -2 /* RTAS Busy */ 27b8b572e1SStephen Rothwell #define RTAS_EXTENDED_DELAY_MIN 9900 28b8b572e1SStephen Rothwell #define RTAS_EXTENDED_DELAY_MAX 9905 29b8b572e1SStephen Rothwell 30970e453eSNathan Lynch /* statuses specific to ibm,suspend-me */ 31970e453eSNathan Lynch #define RTAS_SUSPEND_ABORTED 9000 /* Suspension aborted */ 32970e453eSNathan Lynch #define RTAS_NOT_SUSPENDABLE -9004 /* Partition not suspendable */ 33970e453eSNathan Lynch #define RTAS_THREADS_ACTIVE -9005 /* Multiple processor threads active */ 34970e453eSNathan Lynch #define RTAS_OUTSTANDING_COPROC -9006 /* Outstanding coprocessor operations */ 35970e453eSNathan Lynch 36b8b572e1SStephen Rothwell /* 37b8b572e1SStephen Rothwell * In general to call RTAS use rtas_token("string") to lookup 38b8b572e1SStephen Rothwell * an RTAS token for the given string (e.g. "event-scan"). 39b8b572e1SStephen Rothwell * To actually perform the call use 40b8b572e1SStephen Rothwell * ret = rtas_call(token, n_in, n_out, ...) 41b8b572e1SStephen Rothwell * Where n_in is the number of input parameters and 42b8b572e1SStephen Rothwell * n_out is the number of output parameters 43b8b572e1SStephen Rothwell * 44b8b572e1SStephen Rothwell * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE 45b8b572e1SStephen Rothwell * will be returned as a token. rtas_call() does look for this 46b8b572e1SStephen Rothwell * token and error out gracefully so rtas_call(rtas_token("str"), ...) 47b8b572e1SStephen Rothwell * may be safely used for one-shot calls to RTAS. 48b8b572e1SStephen Rothwell * 49b8b572e1SStephen Rothwell */ 50b8b572e1SStephen Rothwell 51b8b572e1SStephen Rothwell /* RTAS event classes */ 52b8b572e1SStephen Rothwell #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ 53b8b572e1SStephen Rothwell #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ 54b8b572e1SStephen Rothwell #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ 554a9f9506SAnton Blanchard #define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */ 564a9f9506SAnton Blanchard #define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff 57b8b572e1SStephen Rothwell 58b8b572e1SStephen Rothwell /* RTAS event severity */ 59b8b572e1SStephen Rothwell #define RTAS_SEVERITY_FATAL 0x5 60b8b572e1SStephen Rothwell #define RTAS_SEVERITY_ERROR 0x4 61b8b572e1SStephen Rothwell #define RTAS_SEVERITY_ERROR_SYNC 0x3 62b8b572e1SStephen Rothwell #define RTAS_SEVERITY_WARNING 0x2 63b8b572e1SStephen Rothwell #define RTAS_SEVERITY_EVENT 0x1 64b8b572e1SStephen Rothwell #define RTAS_SEVERITY_NO_ERROR 0x0 65b8b572e1SStephen Rothwell 66b8b572e1SStephen Rothwell /* RTAS event disposition */ 67b8b572e1SStephen Rothwell #define RTAS_DISP_FULLY_RECOVERED 0x0 68b8b572e1SStephen Rothwell #define RTAS_DISP_LIMITED_RECOVERY 0x1 69b8b572e1SStephen Rothwell #define RTAS_DISP_NOT_RECOVERED 0x2 70b8b572e1SStephen Rothwell 71b8b572e1SStephen Rothwell /* RTAS event initiator */ 72b8b572e1SStephen Rothwell #define RTAS_INITIATOR_UNKNOWN 0x0 73b8b572e1SStephen Rothwell #define RTAS_INITIATOR_CPU 0x1 74b8b572e1SStephen Rothwell #define RTAS_INITIATOR_PCI 0x2 75b8b572e1SStephen Rothwell #define RTAS_INITIATOR_ISA 0x3 76b8b572e1SStephen Rothwell #define RTAS_INITIATOR_MEMORY 0x4 77b8b572e1SStephen Rothwell #define RTAS_INITIATOR_POWERMGM 0x5 78b8b572e1SStephen Rothwell 79b8b572e1SStephen Rothwell /* RTAS event target */ 80b8b572e1SStephen Rothwell #define RTAS_TARGET_UNKNOWN 0x0 81b8b572e1SStephen Rothwell #define RTAS_TARGET_CPU 0x1 82b8b572e1SStephen Rothwell #define RTAS_TARGET_PCI 0x2 83b8b572e1SStephen Rothwell #define RTAS_TARGET_ISA 0x3 84b8b572e1SStephen Rothwell #define RTAS_TARGET_MEMORY 0x4 85b8b572e1SStephen Rothwell #define RTAS_TARGET_POWERMGM 0x5 86b8b572e1SStephen Rothwell 87b8b572e1SStephen Rothwell /* RTAS event type */ 88b8b572e1SStephen Rothwell #define RTAS_TYPE_RETRY 0x01 89b8b572e1SStephen Rothwell #define RTAS_TYPE_TCE_ERR 0x02 90b8b572e1SStephen Rothwell #define RTAS_TYPE_INTERN_DEV_FAIL 0x03 91b8b572e1SStephen Rothwell #define RTAS_TYPE_TIMEOUT 0x04 92b8b572e1SStephen Rothwell #define RTAS_TYPE_DATA_PARITY 0x05 93b8b572e1SStephen Rothwell #define RTAS_TYPE_ADDR_PARITY 0x06 94b8b572e1SStephen Rothwell #define RTAS_TYPE_CACHE_PARITY 0x07 95b8b572e1SStephen Rothwell #define RTAS_TYPE_ADDR_INVALID 0x08 96b8b572e1SStephen Rothwell #define RTAS_TYPE_ECC_UNCORR 0x09 97b8b572e1SStephen Rothwell #define RTAS_TYPE_ECC_CORR 0x0a 98b8b572e1SStephen Rothwell #define RTAS_TYPE_EPOW 0x40 99b8b572e1SStephen Rothwell #define RTAS_TYPE_PLATFORM 0xE0 100b8b572e1SStephen Rothwell #define RTAS_TYPE_IO 0xE1 101b8b572e1SStephen Rothwell #define RTAS_TYPE_INFO 0xE2 102b8b572e1SStephen Rothwell #define RTAS_TYPE_DEALLOC 0xE3 103b8b572e1SStephen Rothwell #define RTAS_TYPE_DUMP 0xE4 1044c5d87dbSOliver O'Halloran #define RTAS_TYPE_HOTPLUG 0xE5 105b8b572e1SStephen Rothwell /* I don't add PowerMGM events right now, this is a different topic */ 106b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 107b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 108b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LID_OPEN 0x62 109b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LID_CLOSE 0x63 110b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 111b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_WAKE_BTN 0x65 112b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 113b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 114b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 115b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 116b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a 117b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b 118b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c 119b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d 120b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e 121b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f 122b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 123b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 12449c68a85SJesse Larrew /* Platform Resource Reassignment Notification */ 12549c68a85SJesse Larrew #define RTAS_TYPE_PRRN 0xA0 126b8b572e1SStephen Rothwell 127b08e281bSMark Nelson /* RTAS check-exception vector offset */ 128b08e281bSMark Nelson #define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 129b08e281bSMark Nelson 130a08a53eaSGreg Kurz static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog) 131a08a53eaSGreg Kurz { 132a08a53eaSGreg Kurz return (elog->byte1 & 0xE0) >> 5; 133a08a53eaSGreg Kurz } 134a08a53eaSGreg Kurz 135a08a53eaSGreg Kurz static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog) 136a08a53eaSGreg Kurz { 137a08a53eaSGreg Kurz return (elog->byte1 & 0x18) >> 3; 138a08a53eaSGreg Kurz } 139a08a53eaSGreg Kurz 14004fce21cSMahesh Salgaonkar static inline 14104fce21cSMahesh Salgaonkar void rtas_set_disposition_recovered(struct rtas_error_log *elog) 14204fce21cSMahesh Salgaonkar { 14304fce21cSMahesh Salgaonkar elog->byte1 &= ~0x18; 14404fce21cSMahesh Salgaonkar elog->byte1 |= (RTAS_DISP_FULLY_RECOVERED << 3); 14504fce21cSMahesh Salgaonkar } 14604fce21cSMahesh Salgaonkar 147a08a53eaSGreg Kurz static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog) 148a08a53eaSGreg Kurz { 149a08a53eaSGreg Kurz return (elog->byte1 & 0x04) >> 2; 150a08a53eaSGreg Kurz } 151a08a53eaSGreg Kurz 1528f0b8056SMahesh Salgaonkar static inline uint8_t rtas_error_initiator(const struct rtas_error_log *elog) 1538f0b8056SMahesh Salgaonkar { 1548f0b8056SMahesh Salgaonkar return (elog->byte2 & 0xf0) >> 4; 1558f0b8056SMahesh Salgaonkar } 1568f0b8056SMahesh Salgaonkar 157a08a53eaSGreg Kurz #define rtas_error_type(x) ((x)->byte3) 158a08a53eaSGreg Kurz 159a08a53eaSGreg Kurz static inline 160a08a53eaSGreg Kurz uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog) 161a08a53eaSGreg Kurz { 162a08a53eaSGreg Kurz return be32_to_cpu(elog->extended_log_length); 163a08a53eaSGreg Kurz } 164a08a53eaSGreg Kurz 1654cb46380STseng-Hui (Frank) Lin #define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14 1664cb46380STseng-Hui (Frank) Lin 1674cb46380STseng-Hui (Frank) Lin #define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) 1684cb46380STseng-Hui (Frank) Lin 169a08a53eaSGreg Kurz static 170a08a53eaSGreg Kurz inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log) 171a08a53eaSGreg Kurz { 172a08a53eaSGreg Kurz return ext_log->byte2 & 0x0F; 173a08a53eaSGreg Kurz } 174a08a53eaSGreg Kurz 175a08a53eaSGreg Kurz static 176a08a53eaSGreg Kurz inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log) 177a08a53eaSGreg Kurz { 178a08a53eaSGreg Kurz return be32_to_cpu(ext_log->company_id); 179a08a53eaSGreg Kurz } 180a08a53eaSGreg Kurz 1816431f208SAnton Blanchard /* pSeries event log format */ 1826431f208SAnton Blanchard 1836431f208SAnton Blanchard /* Two bytes ASCII section IDs */ 1846431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H') 1856431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H') 1866431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S') 1876431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H') 1886431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T') 1896431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S') 1906431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H') 1916431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W') 1926431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P') 1936431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R') 1946431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M') 1956431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P') 1966431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E') 1976431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I') 1986431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H') 1996431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D') 200366d395cSNathan Fontenot #define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P') 20104fce21cSMahesh Salgaonkar #define PSERIES_ELOG_SECT_ID_MCE (('M' << 8) | 'C') 2026431f208SAnton Blanchard 203a08a53eaSGreg Kurz static 204a08a53eaSGreg Kurz inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect) 205a08a53eaSGreg Kurz { 206a08a53eaSGreg Kurz return be16_to_cpu(sect->id); 207a08a53eaSGreg Kurz } 208a08a53eaSGreg Kurz 209a08a53eaSGreg Kurz static 210a08a53eaSGreg Kurz inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect) 211a08a53eaSGreg Kurz { 212a08a53eaSGreg Kurz return be16_to_cpu(sect->length); 213a08a53eaSGreg Kurz } 214a08a53eaSGreg Kurz 215366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_CPU 1 216366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_MEM 2 217366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_SLOT 3 218366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_PHB 4 2194c5d87dbSOliver O'Halloran #define PSERIES_HP_ELOG_RESOURCE_PMEM 6 220366d395cSNathan Fontenot 221366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ACTION_ADD 1 222366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ACTION_REMOVE 2 223366d395cSNathan Fontenot 224366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ID_DRC_NAME 1 225366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ID_DRC_INDEX 2 226366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ID_DRC_COUNT 3 227333f7b76SSahil Mehta #define PSERIES_HP_ELOG_ID_DRC_IC 4 228366d395cSNathan Fontenot 2296431f208SAnton Blanchard struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, 2306431f208SAnton Blanchard uint16_t section_id); 2316431f208SAnton Blanchard 232b8b572e1SStephen Rothwell /* 233b8b572e1SStephen Rothwell * This can be set by the rtas_flash module so that it can get called 234b8b572e1SStephen Rothwell * as the absolutely last thing before the kernel terminates. 235b8b572e1SStephen Rothwell */ 236b8b572e1SStephen Rothwell extern void (*rtas_flash_term_hook)(int); 237b8b572e1SStephen Rothwell 238b8b572e1SStephen Rothwell extern struct rtas_t rtas; 239b8b572e1SStephen Rothwell 240b8b572e1SStephen Rothwell extern int rtas_token(const char *service); 241b8b572e1SStephen Rothwell extern int rtas_service_present(const char *service); 242b8b572e1SStephen Rothwell extern int rtas_call(int token, int, int, int *, ...); 243b664db8eSLeonardo Bras int rtas_call_reentrant(int token, int nargs, int nret, int *outputs, ...); 244209eb4e5SMichael Ellerman void rtas_call_unlocked(struct rtas_args *args, int token, int nargs, 245209eb4e5SMichael Ellerman int nret, ...); 24695ec77c0SDaniel Axtens extern void __noreturn rtas_restart(char *cmd); 247b8b572e1SStephen Rothwell extern void rtas_power_off(void); 24895ec77c0SDaniel Axtens extern void __noreturn rtas_halt(void); 249b8b572e1SStephen Rothwell extern void rtas_os_term(char *str); 2505f485a66SNathan Lynch void rtas_activate_firmware(void); 251b8b572e1SStephen Rothwell extern int rtas_get_sensor(int sensor, int index, int *state); 2521c2cb594SThomas Huth extern int rtas_get_sensor_fast(int sensor, int index, int *state); 253b8b572e1SStephen Rothwell extern int rtas_get_power_level(int powerdomain, int *level); 254b8b572e1SStephen Rothwell extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); 255edc72ac4SNathan Lynch extern bool rtas_indicator_present(int token, int *maxindex); 256b8b572e1SStephen Rothwell extern int rtas_set_indicator(int indicator, int index, int new_value); 257b8b572e1SStephen Rothwell extern int rtas_set_indicator_fast(int indicator, int index, int new_value); 258b8b572e1SStephen Rothwell extern void rtas_progress(char *s, unsigned short hex); 259701ba683SNathan Lynch int rtas_ibm_suspend_me(int *fw_status); 260b8b572e1SStephen Rothwell 261b8b572e1SStephen Rothwell struct rtc_time; 2625bfd6435SArnd Bergmann extern time64_t rtas_get_boot_time(void); 263b8b572e1SStephen Rothwell extern void rtas_get_rtc_time(struct rtc_time *rtc_time); 264b8b572e1SStephen Rothwell extern int rtas_set_rtc_time(struct rtc_time *rtc_time); 265b8b572e1SStephen Rothwell 266b8b572e1SStephen Rothwell extern unsigned int rtas_busy_delay_time(int status); 267b8b572e1SStephen Rothwell extern unsigned int rtas_busy_delay(int status); 268b8b572e1SStephen Rothwell 269b8b572e1SStephen Rothwell extern int early_init_dt_scan_rtas(unsigned long node, 270b8b572e1SStephen Rothwell const char *uname, int depth, void *data); 271b8b572e1SStephen Rothwell 272b8b572e1SStephen Rothwell extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); 273b8b572e1SStephen Rothwell 274762ec157SNathan Fontenot #ifdef CONFIG_PPC_PSERIES 275e4a9616cSHari Bathini extern time64_t last_rtas_event; 27678989f0aSHari Bathini extern int clobbering_unread_rtas_event(void); 277762ec157SNathan Fontenot extern int pseries_devicetree_update(s32 scope); 2786b36ba84SHaren Myneni extern void post_mobility_fixup(void); 2794d756894SNathan Lynch int rtas_syscall_dispatch_ibm_suspend_me(u64 handle); 28078989f0aSHari Bathini #else 28178989f0aSHari Bathini static inline int clobbering_unread_rtas_event(void) { return 0; } 2824d756894SNathan Lynch static inline int rtas_syscall_dispatch_ibm_suspend_me(u64 handle) 2834d756894SNathan Lynch { 2844d756894SNathan Lynch return -EINVAL; 2854d756894SNathan Lynch } 286762ec157SNathan Fontenot #endif 287762ec157SNathan Fontenot 288df17f56dSRavi K. Nittala #ifdef CONFIG_PPC_RTAS_DAEMON 289df17f56dSRavi K. Nittala extern void rtas_cancel_event_scan(void); 290df17f56dSRavi K. Nittala #else 291df17f56dSRavi K. Nittala static inline void rtas_cancel_event_scan(void) { } 292df17f56dSRavi K. Nittala #endif 293df17f56dSRavi K. Nittala 294b8b572e1SStephen Rothwell /* Error types logged. */ 295b8b572e1SStephen Rothwell #define ERR_FLAG_ALREADY_LOGGED 0x0 296b8b572e1SStephen Rothwell #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ 297b8b572e1SStephen Rothwell #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ 2986c493685SJim Keniston #define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */ 2996c493685SJim Keniston #define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */ 300b8b572e1SStephen Rothwell 301b8b572e1SStephen Rothwell /* All the types and not flags */ 3026c493685SJim Keniston #define ERR_TYPE_MASK \ 3036c493685SJim Keniston (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ) 304b8b572e1SStephen Rothwell 305b8b572e1SStephen Rothwell #define RTAS_DEBUG KERN_DEBUG "RTAS: " 306b8b572e1SStephen Rothwell 307b8b572e1SStephen Rothwell #define RTAS_ERROR_LOG_MAX 2048 308b8b572e1SStephen Rothwell 309b8b572e1SStephen Rothwell /* 310b8b572e1SStephen Rothwell * Return the firmware-specified size of the error log buffer 311b8b572e1SStephen Rothwell * for all rtas calls that require an error buffer argument. 312b8b572e1SStephen Rothwell * This includes 'check-exception' and 'rtas-last-error'. 313b8b572e1SStephen Rothwell */ 314b8b572e1SStephen Rothwell extern int rtas_get_error_log_max(void); 315b8b572e1SStephen Rothwell 316b8b572e1SStephen Rothwell /* Event Scan Parameters */ 317b8b572e1SStephen Rothwell #define EVENT_SCAN_ALL_EVENTS 0xf0000000 318b8b572e1SStephen Rothwell #define SURVEILLANCE_TOKEN 9000 319b8b572e1SStephen Rothwell #define LOG_NUMBER 64 /* must be a power of two */ 320b8b572e1SStephen Rothwell #define LOG_NUMBER_MASK (LOG_NUMBER-1) 321b8b572e1SStephen Rothwell 322b8b572e1SStephen Rothwell /* Some RTAS ops require a data buffer and that buffer must be < 4G. 323b8b572e1SStephen Rothwell * Rather than having a memory allocator, just use this buffer 324b8b572e1SStephen Rothwell * (get the lock first), make the RTAS call. Copy the data instead 325b8b572e1SStephen Rothwell * of holding the buffer for long. 326b8b572e1SStephen Rothwell */ 327b8b572e1SStephen Rothwell 328b8b572e1SStephen Rothwell #define RTAS_DATA_BUF_SIZE 4096 329b8b572e1SStephen Rothwell extern spinlock_t rtas_data_buf_lock; 330b8b572e1SStephen Rothwell extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; 331b8b572e1SStephen Rothwell 332b8b572e1SStephen Rothwell /* RMO buffer reserved for user-space RTAS use */ 333b8b572e1SStephen Rothwell extern unsigned long rtas_rmo_buf; 334b8b572e1SStephen Rothwell 335b8b572e1SStephen Rothwell #define GLOBAL_INTERRUPT_QUEUE 9005 336b8b572e1SStephen Rothwell 337b8b572e1SStephen Rothwell /** 338b8b572e1SStephen Rothwell * rtas_config_addr - Format a busno, devfn and reg for RTAS. 339b8b572e1SStephen Rothwell * @busno: The bus number. 340b8b572e1SStephen Rothwell * @devfn: The device and function number as encoded by PCI_DEVFN(). 341b8b572e1SStephen Rothwell * @reg: The register number. 342b8b572e1SStephen Rothwell * 343b8b572e1SStephen Rothwell * This function encodes the given busno, devfn and register number as 344b8b572e1SStephen Rothwell * required for RTAS calls that take a "config_addr" parameter. 345b8b572e1SStephen Rothwell * See PAPR requirement 7.3.4-1 for more info. 346b8b572e1SStephen Rothwell */ 347b8b572e1SStephen Rothwell static inline u32 rtas_config_addr(int busno, int devfn, int reg) 348b8b572e1SStephen Rothwell { 349b8b572e1SStephen Rothwell return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | 350b8b572e1SStephen Rothwell (devfn << 8) | (reg & 0xff); 351b8b572e1SStephen Rothwell } 352b8b572e1SStephen Rothwell 353061d19f2SPaul Gortmaker extern void rtas_give_timebase(void); 354061d19f2SPaul Gortmaker extern void rtas_take_timebase(void); 355c4007a2fSBenjamin Herrenschmidt 3568a3e3d31Ssukadev@linux.vnet.ibm.com #ifdef CONFIG_PPC_RTAS 3578a3e3d31Ssukadev@linux.vnet.ibm.com static inline int page_is_rtas_user_buf(unsigned long pfn) 3588a3e3d31Ssukadev@linux.vnet.ibm.com { 3598a3e3d31Ssukadev@linux.vnet.ibm.com unsigned long paddr = (pfn << PAGE_SHIFT); 360*e5d56763SNathan Lynch if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_USER_REGION_SIZE)) 3618a3e3d31Ssukadev@linux.vnet.ibm.com return 1; 3628a3e3d31Ssukadev@linux.vnet.ibm.com return 0; 3638a3e3d31Ssukadev@linux.vnet.ibm.com } 364f459d63eSNathan Fontenot 365f459d63eSNathan Fontenot /* Not the best place to put pSeries_coalesce_init, will be fixed when we 366f459d63eSNathan Fontenot * move some of the rtas suspend-me stuff to pseries */ 367f459d63eSNathan Fontenot extern void pSeries_coalesce_init(void); 368b1923caaSBenjamin Herrenschmidt void rtas_initialize(void); 3698a3e3d31Ssukadev@linux.vnet.ibm.com #else 3708a3e3d31Ssukadev@linux.vnet.ibm.com static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} 371f459d63eSNathan Fontenot static inline void pSeries_coalesce_init(void) { } 3726c6fdbb2SChengyang Fan static inline void rtas_initialize(void) { } 3738a3e3d31Ssukadev@linux.vnet.ibm.com #endif 3748a3e3d31Ssukadev@linux.vnet.ibm.com 375ae3a197eSDavid Howells extern int call_rtas(const char *, int, int, unsigned long *, ...); 376ae3a197eSDavid Howells 3778ba21426SKajol Jain #ifdef CONFIG_HV_PERF_CTRS 3788ba21426SKajol Jain void read_24x7_sys_info(void); 3798ba21426SKajol Jain #else 3808ba21426SKajol Jain static inline void read_24x7_sys_info(void) { } 3818ba21426SKajol Jain #endif 3828ba21426SKajol Jain 383b8b572e1SStephen Rothwell #endif /* __KERNEL__ */ 384b8b572e1SStephen Rothwell #endif /* _POWERPC_RTAS_H */ 385