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 22b8b572e1SStephen Rothwell /* Buffer size for ppc_rtas system call. */ 23b8b572e1SStephen Rothwell #define RTAS_RMOBUF_MAX (64 * 1024) 24b8b572e1SStephen Rothwell 25b8b572e1SStephen Rothwell /* RTAS return status codes */ 26b8b572e1SStephen Rothwell #define RTAS_NOT_SUSPENDABLE -9004 27b8b572e1SStephen Rothwell #define RTAS_BUSY -2 /* RTAS Busy */ 28b8b572e1SStephen Rothwell #define RTAS_EXTENDED_DELAY_MIN 9900 29b8b572e1SStephen Rothwell #define RTAS_EXTENDED_DELAY_MAX 9905 30b8b572e1SStephen Rothwell 31b8b572e1SStephen Rothwell /* 32b8b572e1SStephen Rothwell * In general to call RTAS use rtas_token("string") to lookup 33b8b572e1SStephen Rothwell * an RTAS token for the given string (e.g. "event-scan"). 34b8b572e1SStephen Rothwell * To actually perform the call use 35b8b572e1SStephen Rothwell * ret = rtas_call(token, n_in, n_out, ...) 36b8b572e1SStephen Rothwell * Where n_in is the number of input parameters and 37b8b572e1SStephen Rothwell * n_out is the number of output parameters 38b8b572e1SStephen Rothwell * 39b8b572e1SStephen Rothwell * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE 40b8b572e1SStephen Rothwell * will be returned as a token. rtas_call() does look for this 41b8b572e1SStephen Rothwell * token and error out gracefully so rtas_call(rtas_token("str"), ...) 42b8b572e1SStephen Rothwell * may be safely used for one-shot calls to RTAS. 43b8b572e1SStephen Rothwell * 44b8b572e1SStephen Rothwell */ 45b8b572e1SStephen Rothwell 46b8b572e1SStephen Rothwell /* RTAS event classes */ 47b8b572e1SStephen Rothwell #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ 48b8b572e1SStephen Rothwell #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ 49b8b572e1SStephen Rothwell #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ 504a9f9506SAnton Blanchard #define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */ 514a9f9506SAnton Blanchard #define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff 52b8b572e1SStephen Rothwell 53b8b572e1SStephen Rothwell /* RTAS event severity */ 54b8b572e1SStephen Rothwell #define RTAS_SEVERITY_FATAL 0x5 55b8b572e1SStephen Rothwell #define RTAS_SEVERITY_ERROR 0x4 56b8b572e1SStephen Rothwell #define RTAS_SEVERITY_ERROR_SYNC 0x3 57b8b572e1SStephen Rothwell #define RTAS_SEVERITY_WARNING 0x2 58b8b572e1SStephen Rothwell #define RTAS_SEVERITY_EVENT 0x1 59b8b572e1SStephen Rothwell #define RTAS_SEVERITY_NO_ERROR 0x0 60b8b572e1SStephen Rothwell 61b8b572e1SStephen Rothwell /* RTAS event disposition */ 62b8b572e1SStephen Rothwell #define RTAS_DISP_FULLY_RECOVERED 0x0 63b8b572e1SStephen Rothwell #define RTAS_DISP_LIMITED_RECOVERY 0x1 64b8b572e1SStephen Rothwell #define RTAS_DISP_NOT_RECOVERED 0x2 65b8b572e1SStephen Rothwell 66b8b572e1SStephen Rothwell /* RTAS event initiator */ 67b8b572e1SStephen Rothwell #define RTAS_INITIATOR_UNKNOWN 0x0 68b8b572e1SStephen Rothwell #define RTAS_INITIATOR_CPU 0x1 69b8b572e1SStephen Rothwell #define RTAS_INITIATOR_PCI 0x2 70b8b572e1SStephen Rothwell #define RTAS_INITIATOR_ISA 0x3 71b8b572e1SStephen Rothwell #define RTAS_INITIATOR_MEMORY 0x4 72b8b572e1SStephen Rothwell #define RTAS_INITIATOR_POWERMGM 0x5 73b8b572e1SStephen Rothwell 74b8b572e1SStephen Rothwell /* RTAS event target */ 75b8b572e1SStephen Rothwell #define RTAS_TARGET_UNKNOWN 0x0 76b8b572e1SStephen Rothwell #define RTAS_TARGET_CPU 0x1 77b8b572e1SStephen Rothwell #define RTAS_TARGET_PCI 0x2 78b8b572e1SStephen Rothwell #define RTAS_TARGET_ISA 0x3 79b8b572e1SStephen Rothwell #define RTAS_TARGET_MEMORY 0x4 80b8b572e1SStephen Rothwell #define RTAS_TARGET_POWERMGM 0x5 81b8b572e1SStephen Rothwell 82b8b572e1SStephen Rothwell /* RTAS event type */ 83b8b572e1SStephen Rothwell #define RTAS_TYPE_RETRY 0x01 84b8b572e1SStephen Rothwell #define RTAS_TYPE_TCE_ERR 0x02 85b8b572e1SStephen Rothwell #define RTAS_TYPE_INTERN_DEV_FAIL 0x03 86b8b572e1SStephen Rothwell #define RTAS_TYPE_TIMEOUT 0x04 87b8b572e1SStephen Rothwell #define RTAS_TYPE_DATA_PARITY 0x05 88b8b572e1SStephen Rothwell #define RTAS_TYPE_ADDR_PARITY 0x06 89b8b572e1SStephen Rothwell #define RTAS_TYPE_CACHE_PARITY 0x07 90b8b572e1SStephen Rothwell #define RTAS_TYPE_ADDR_INVALID 0x08 91b8b572e1SStephen Rothwell #define RTAS_TYPE_ECC_UNCORR 0x09 92b8b572e1SStephen Rothwell #define RTAS_TYPE_ECC_CORR 0x0a 93b8b572e1SStephen Rothwell #define RTAS_TYPE_EPOW 0x40 94b8b572e1SStephen Rothwell #define RTAS_TYPE_PLATFORM 0xE0 95b8b572e1SStephen Rothwell #define RTAS_TYPE_IO 0xE1 96b8b572e1SStephen Rothwell #define RTAS_TYPE_INFO 0xE2 97b8b572e1SStephen Rothwell #define RTAS_TYPE_DEALLOC 0xE3 98b8b572e1SStephen Rothwell #define RTAS_TYPE_DUMP 0xE4 994c5d87dbSOliver O'Halloran #define RTAS_TYPE_HOTPLUG 0xE5 100b8b572e1SStephen Rothwell /* I don't add PowerMGM events right now, this is a different topic */ 101b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 102b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 103b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LID_OPEN 0x62 104b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LID_CLOSE 0x63 105b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 106b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_WAKE_BTN 0x65 107b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 108b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 109b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 110b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 111b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a 112b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b 113b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c 114b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d 115b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e 116b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f 117b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 118b8b572e1SStephen Rothwell #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 11949c68a85SJesse Larrew /* Platform Resource Reassignment Notification */ 12049c68a85SJesse Larrew #define RTAS_TYPE_PRRN 0xA0 121b8b572e1SStephen Rothwell 122b08e281bSMark Nelson /* RTAS check-exception vector offset */ 123b08e281bSMark Nelson #define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 124b08e281bSMark Nelson 125a08a53eaSGreg Kurz static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog) 126a08a53eaSGreg Kurz { 127a08a53eaSGreg Kurz return (elog->byte1 & 0xE0) >> 5; 128a08a53eaSGreg Kurz } 129a08a53eaSGreg Kurz 130a08a53eaSGreg Kurz static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog) 131a08a53eaSGreg Kurz { 132a08a53eaSGreg Kurz return (elog->byte1 & 0x18) >> 3; 133a08a53eaSGreg Kurz } 134a08a53eaSGreg Kurz 13504fce21cSMahesh Salgaonkar static inline 13604fce21cSMahesh Salgaonkar void rtas_set_disposition_recovered(struct rtas_error_log *elog) 13704fce21cSMahesh Salgaonkar { 13804fce21cSMahesh Salgaonkar elog->byte1 &= ~0x18; 13904fce21cSMahesh Salgaonkar elog->byte1 |= (RTAS_DISP_FULLY_RECOVERED << 3); 14004fce21cSMahesh Salgaonkar } 14104fce21cSMahesh Salgaonkar 142a08a53eaSGreg Kurz static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog) 143a08a53eaSGreg Kurz { 144a08a53eaSGreg Kurz return (elog->byte1 & 0x04) >> 2; 145a08a53eaSGreg Kurz } 146a08a53eaSGreg Kurz 1478f0b8056SMahesh Salgaonkar static inline uint8_t rtas_error_initiator(const struct rtas_error_log *elog) 1488f0b8056SMahesh Salgaonkar { 1498f0b8056SMahesh Salgaonkar return (elog->byte2 & 0xf0) >> 4; 1508f0b8056SMahesh Salgaonkar } 1518f0b8056SMahesh Salgaonkar 152a08a53eaSGreg Kurz #define rtas_error_type(x) ((x)->byte3) 153a08a53eaSGreg Kurz 154a08a53eaSGreg Kurz static inline 155a08a53eaSGreg Kurz uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog) 156a08a53eaSGreg Kurz { 157a08a53eaSGreg Kurz return be32_to_cpu(elog->extended_log_length); 158a08a53eaSGreg Kurz } 159a08a53eaSGreg Kurz 1604cb46380STseng-Hui (Frank) Lin #define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14 1614cb46380STseng-Hui (Frank) Lin 1624cb46380STseng-Hui (Frank) Lin #define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) 1634cb46380STseng-Hui (Frank) Lin 164a08a53eaSGreg Kurz static 165a08a53eaSGreg Kurz inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log) 166a08a53eaSGreg Kurz { 167a08a53eaSGreg Kurz return ext_log->byte2 & 0x0F; 168a08a53eaSGreg Kurz } 169a08a53eaSGreg Kurz 170a08a53eaSGreg Kurz static 171a08a53eaSGreg Kurz inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log) 172a08a53eaSGreg Kurz { 173a08a53eaSGreg Kurz return be32_to_cpu(ext_log->company_id); 174a08a53eaSGreg Kurz } 175a08a53eaSGreg Kurz 1766431f208SAnton Blanchard /* pSeries event log format */ 1776431f208SAnton Blanchard 1786431f208SAnton Blanchard /* Two bytes ASCII section IDs */ 1796431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H') 1806431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H') 1816431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S') 1826431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H') 1836431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T') 1846431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S') 1856431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H') 1866431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W') 1876431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P') 1886431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R') 1896431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M') 1906431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P') 1916431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E') 1926431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I') 1936431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H') 1946431f208SAnton Blanchard #define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D') 195366d395cSNathan Fontenot #define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P') 19604fce21cSMahesh Salgaonkar #define PSERIES_ELOG_SECT_ID_MCE (('M' << 8) | 'C') 1976431f208SAnton Blanchard 198a08a53eaSGreg Kurz static 199a08a53eaSGreg Kurz inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect) 200a08a53eaSGreg Kurz { 201a08a53eaSGreg Kurz return be16_to_cpu(sect->id); 202a08a53eaSGreg Kurz } 203a08a53eaSGreg Kurz 204a08a53eaSGreg Kurz static 205a08a53eaSGreg Kurz inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect) 206a08a53eaSGreg Kurz { 207a08a53eaSGreg Kurz return be16_to_cpu(sect->length); 208a08a53eaSGreg Kurz } 209a08a53eaSGreg Kurz 210366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_CPU 1 211366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_MEM 2 212366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_SLOT 3 213366d395cSNathan Fontenot #define PSERIES_HP_ELOG_RESOURCE_PHB 4 2144c5d87dbSOliver O'Halloran #define PSERIES_HP_ELOG_RESOURCE_PMEM 6 215366d395cSNathan Fontenot 216366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ACTION_ADD 1 217366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ACTION_REMOVE 2 218e70d5970SJohn Allen #define PSERIES_HP_ELOG_ACTION_READD 3 219366d395cSNathan Fontenot 220366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ID_DRC_NAME 1 221366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ID_DRC_INDEX 2 222366d395cSNathan Fontenot #define PSERIES_HP_ELOG_ID_DRC_COUNT 3 223333f7b76SSahil Mehta #define PSERIES_HP_ELOG_ID_DRC_IC 4 224366d395cSNathan Fontenot 2256431f208SAnton Blanchard struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, 2266431f208SAnton Blanchard uint16_t section_id); 2276431f208SAnton Blanchard 228b8b572e1SStephen Rothwell /* 229b8b572e1SStephen Rothwell * This can be set by the rtas_flash module so that it can get called 230b8b572e1SStephen Rothwell * as the absolutely last thing before the kernel terminates. 231b8b572e1SStephen Rothwell */ 232b8b572e1SStephen Rothwell extern void (*rtas_flash_term_hook)(int); 233b8b572e1SStephen Rothwell 234b8b572e1SStephen Rothwell extern struct rtas_t rtas; 235b8b572e1SStephen Rothwell 236b8b572e1SStephen Rothwell extern int rtas_token(const char *service); 237b8b572e1SStephen Rothwell extern int rtas_service_present(const char *service); 238b8b572e1SStephen Rothwell extern int rtas_call(int token, int, int, int *, ...); 239b664db8eSLeonardo Bras int rtas_call_reentrant(int token, int nargs, int nret, int *outputs, ...); 240209eb4e5SMichael Ellerman void rtas_call_unlocked(struct rtas_args *args, int token, int nargs, 241209eb4e5SMichael Ellerman int nret, ...); 24295ec77c0SDaniel Axtens extern void __noreturn rtas_restart(char *cmd); 243b8b572e1SStephen Rothwell extern void rtas_power_off(void); 24495ec77c0SDaniel Axtens extern void __noreturn rtas_halt(void); 245b8b572e1SStephen Rothwell extern void rtas_os_term(char *str); 246b8b572e1SStephen Rothwell extern int rtas_get_sensor(int sensor, int index, int *state); 2471c2cb594SThomas Huth extern int rtas_get_sensor_fast(int sensor, int index, int *state); 248b8b572e1SStephen Rothwell extern int rtas_get_power_level(int powerdomain, int *level); 249b8b572e1SStephen Rothwell extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); 250edc72ac4SNathan Lynch extern bool rtas_indicator_present(int token, int *maxindex); 251b8b572e1SStephen Rothwell extern int rtas_set_indicator(int indicator, int index, int new_value); 252b8b572e1SStephen Rothwell extern int rtas_set_indicator_fast(int indicator, int index, int new_value); 253b8b572e1SStephen Rothwell extern void rtas_progress(char *s, unsigned short hex); 2548fe93f8dSBrian King extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); 2558fe93f8dSBrian King extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); 256120496acSRobert Jennings extern int rtas_online_cpus_mask(cpumask_var_t cpus); 257120496acSRobert Jennings extern int rtas_offline_cpus_mask(cpumask_var_t cpus); 258c03e7374STyrel Datwyler extern int rtas_ibm_suspend_me(u64 handle); 259b8b572e1SStephen Rothwell 260b8b572e1SStephen Rothwell struct rtc_time; 2615bfd6435SArnd Bergmann extern time64_t rtas_get_boot_time(void); 262b8b572e1SStephen Rothwell extern void rtas_get_rtc_time(struct rtc_time *rtc_time); 263b8b572e1SStephen Rothwell extern int rtas_set_rtc_time(struct rtc_time *rtc_time); 264b8b572e1SStephen Rothwell 265b8b572e1SStephen Rothwell extern unsigned int rtas_busy_delay_time(int status); 266b8b572e1SStephen Rothwell extern unsigned int rtas_busy_delay(int status); 267b8b572e1SStephen Rothwell 268b8b572e1SStephen Rothwell extern int early_init_dt_scan_rtas(unsigned long node, 269b8b572e1SStephen Rothwell const char *uname, int depth, void *data); 270b8b572e1SStephen Rothwell 271b8b572e1SStephen Rothwell extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); 272b8b572e1SStephen Rothwell 273762ec157SNathan Fontenot #ifdef CONFIG_PPC_PSERIES 274e4a9616cSHari Bathini extern time64_t last_rtas_event; 27578989f0aSHari Bathini extern int clobbering_unread_rtas_event(void); 276762ec157SNathan Fontenot extern int pseries_devicetree_update(s32 scope); 2776b36ba84SHaren Myneni extern void post_mobility_fixup(void); 27878989f0aSHari Bathini #else 27978989f0aSHari Bathini static inline int clobbering_unread_rtas_event(void) { return 0; } 280762ec157SNathan Fontenot #endif 281762ec157SNathan Fontenot 282df17f56dSRavi K. Nittala #ifdef CONFIG_PPC_RTAS_DAEMON 283df17f56dSRavi K. Nittala extern void rtas_cancel_event_scan(void); 284df17f56dSRavi K. Nittala #else 285df17f56dSRavi K. Nittala static inline void rtas_cancel_event_scan(void) { } 286df17f56dSRavi K. Nittala #endif 287df17f56dSRavi K. Nittala 288b8b572e1SStephen Rothwell /* Error types logged. */ 289b8b572e1SStephen Rothwell #define ERR_FLAG_ALREADY_LOGGED 0x0 290b8b572e1SStephen Rothwell #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ 291b8b572e1SStephen Rothwell #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ 2926c493685SJim Keniston #define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */ 2936c493685SJim Keniston #define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */ 294b8b572e1SStephen Rothwell 295b8b572e1SStephen Rothwell /* All the types and not flags */ 2966c493685SJim Keniston #define ERR_TYPE_MASK \ 2976c493685SJim Keniston (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ) 298b8b572e1SStephen Rothwell 299b8b572e1SStephen Rothwell #define RTAS_DEBUG KERN_DEBUG "RTAS: " 300b8b572e1SStephen Rothwell 301b8b572e1SStephen Rothwell #define RTAS_ERROR_LOG_MAX 2048 302b8b572e1SStephen Rothwell 303b8b572e1SStephen Rothwell /* 304b8b572e1SStephen Rothwell * Return the firmware-specified size of the error log buffer 305b8b572e1SStephen Rothwell * for all rtas calls that require an error buffer argument. 306b8b572e1SStephen Rothwell * This includes 'check-exception' and 'rtas-last-error'. 307b8b572e1SStephen Rothwell */ 308b8b572e1SStephen Rothwell extern int rtas_get_error_log_max(void); 309b8b572e1SStephen Rothwell 310b8b572e1SStephen Rothwell /* Event Scan Parameters */ 311b8b572e1SStephen Rothwell #define EVENT_SCAN_ALL_EVENTS 0xf0000000 312b8b572e1SStephen Rothwell #define SURVEILLANCE_TOKEN 9000 313b8b572e1SStephen Rothwell #define LOG_NUMBER 64 /* must be a power of two */ 314b8b572e1SStephen Rothwell #define LOG_NUMBER_MASK (LOG_NUMBER-1) 315b8b572e1SStephen Rothwell 316b8b572e1SStephen Rothwell /* Some RTAS ops require a data buffer and that buffer must be < 4G. 317b8b572e1SStephen Rothwell * Rather than having a memory allocator, just use this buffer 318b8b572e1SStephen Rothwell * (get the lock first), make the RTAS call. Copy the data instead 319b8b572e1SStephen Rothwell * of holding the buffer for long. 320b8b572e1SStephen Rothwell */ 321b8b572e1SStephen Rothwell 322b8b572e1SStephen Rothwell #define RTAS_DATA_BUF_SIZE 4096 323b8b572e1SStephen Rothwell extern spinlock_t rtas_data_buf_lock; 324b8b572e1SStephen Rothwell extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; 325b8b572e1SStephen Rothwell 326b8b572e1SStephen Rothwell /* RMO buffer reserved for user-space RTAS use */ 327b8b572e1SStephen Rothwell extern unsigned long rtas_rmo_buf; 328b8b572e1SStephen Rothwell 329b8b572e1SStephen Rothwell #define GLOBAL_INTERRUPT_QUEUE 9005 330b8b572e1SStephen Rothwell 331b8b572e1SStephen Rothwell /** 332b8b572e1SStephen Rothwell * rtas_config_addr - Format a busno, devfn and reg for RTAS. 333b8b572e1SStephen Rothwell * @busno: The bus number. 334b8b572e1SStephen Rothwell * @devfn: The device and function number as encoded by PCI_DEVFN(). 335b8b572e1SStephen Rothwell * @reg: The register number. 336b8b572e1SStephen Rothwell * 337b8b572e1SStephen Rothwell * This function encodes the given busno, devfn and register number as 338b8b572e1SStephen Rothwell * required for RTAS calls that take a "config_addr" parameter. 339b8b572e1SStephen Rothwell * See PAPR requirement 7.3.4-1 for more info. 340b8b572e1SStephen Rothwell */ 341b8b572e1SStephen Rothwell static inline u32 rtas_config_addr(int busno, int devfn, int reg) 342b8b572e1SStephen Rothwell { 343b8b572e1SStephen Rothwell return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | 344b8b572e1SStephen Rothwell (devfn << 8) | (reg & 0xff); 345b8b572e1SStephen Rothwell } 346b8b572e1SStephen Rothwell 347061d19f2SPaul Gortmaker extern void rtas_give_timebase(void); 348061d19f2SPaul Gortmaker extern void rtas_take_timebase(void); 349c4007a2fSBenjamin Herrenschmidt 3508a3e3d31Ssukadev@linux.vnet.ibm.com #ifdef CONFIG_PPC_RTAS 3518a3e3d31Ssukadev@linux.vnet.ibm.com static inline int page_is_rtas_user_buf(unsigned long pfn) 3528a3e3d31Ssukadev@linux.vnet.ibm.com { 3538a3e3d31Ssukadev@linux.vnet.ibm.com unsigned long paddr = (pfn << PAGE_SHIFT); 3548a3e3d31Ssukadev@linux.vnet.ibm.com if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX)) 3558a3e3d31Ssukadev@linux.vnet.ibm.com return 1; 3568a3e3d31Ssukadev@linux.vnet.ibm.com return 0; 3578a3e3d31Ssukadev@linux.vnet.ibm.com } 358f459d63eSNathan Fontenot 359f459d63eSNathan Fontenot /* Not the best place to put pSeries_coalesce_init, will be fixed when we 360f459d63eSNathan Fontenot * move some of the rtas suspend-me stuff to pseries */ 361f459d63eSNathan Fontenot extern void pSeries_coalesce_init(void); 362b1923caaSBenjamin Herrenschmidt void rtas_initialize(void); 3638a3e3d31Ssukadev@linux.vnet.ibm.com #else 3648a3e3d31Ssukadev@linux.vnet.ibm.com static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} 365f459d63eSNathan Fontenot static inline void pSeries_coalesce_init(void) { } 366b1923caaSBenjamin Herrenschmidt static inline void rtas_initialize(void) { }; 3678a3e3d31Ssukadev@linux.vnet.ibm.com #endif 3688a3e3d31Ssukadev@linux.vnet.ibm.com 369ae3a197eSDavid Howells extern int call_rtas(const char *, int, int, unsigned long *, ...); 370ae3a197eSDavid Howells 3718ba21426SKajol Jain #ifdef CONFIG_HV_PERF_CTRS 3728ba21426SKajol Jain void read_24x7_sys_info(void); 3738ba21426SKajol Jain #else 3748ba21426SKajol Jain static inline void read_24x7_sys_info(void) { } 3758ba21426SKajol Jain #endif 3768ba21426SKajol Jain 377b8b572e1SStephen Rothwell #endif /* __KERNEL__ */ 378b8b572e1SStephen Rothwell #endif /* _POWERPC_RTAS_H */ 379