| #ifndef _POWERPC_RTAS_H |
| #define _POWERPC_RTAS_H |
| #ifdef __KERNEL__ |
| |
| #include <linux/spinlock.h> |
| #include <asm/page.h> |
| |
| /* |
| * Definitions for talking to the RTAS on CHRP machines. |
| * |
| * Copyright (C) 2001 Peter Bergner |
| * Copyright (C) 2001 PPC 64 Team, IBM Corp |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #define RTAS_UNKNOWN_SERVICE (-1) |
| #define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */ |
| |
| /* Buffer size for ppc_rtas system call. */ |
| #define RTAS_RMOBUF_MAX (64 * 1024) |
| |
| /* RTAS return status codes */ |
| #define RTAS_NOT_SUSPENDABLE -9004 |
| #define RTAS_BUSY -2 /* RTAS Busy */ |
| #define RTAS_EXTENDED_DELAY_MIN 9900 |
| #define RTAS_EXTENDED_DELAY_MAX 9905 |
| |
| /* |
| * In general to call RTAS use rtas_token("string") to lookup |
| * an RTAS token for the given string (e.g. "event-scan"). |
| * To actually perform the call use |
| * ret = rtas_call(token, n_in, n_out, ...) |
| * Where n_in is the number of input parameters and |
| * n_out is the number of output parameters |
| * |
| * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE |
| * will be returned as a token. rtas_call() does look for this |
| * token and error out gracefully so rtas_call(rtas_token("str"), ...) |
| * may be safely used for one-shot calls to RTAS. |
| * |
| */ |
| |
| typedef u32 rtas_arg_t; |
| |
| struct rtas_args { |
| u32 token; |
| u32 nargs; |
| u32 nret; |
| rtas_arg_t args[16]; |
| rtas_arg_t *rets; /* Pointer to return values in args[]. */ |
| }; |
| |
| struct rtas_t { |
| unsigned long entry; /* physical address pointer */ |
| unsigned long base; /* physical address pointer */ |
| unsigned long size; |
| arch_spinlock_t lock; |
| struct rtas_args args; |
| struct device_node *dev; /* virtual address pointer */ |
| }; |
| |
| struct rtas_suspend_me_data { |
| atomic_t working; /* number of cpus accessing this struct */ |
| atomic_t done; |
| int token; /* ibm,suspend-me */ |
| atomic_t error; |
| struct completion *complete; /* wait on this until working == 0 */ |
| }; |
| |
| /* RTAS event classes */ |
| #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ |
| #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ |
| #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ |
| #define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */ |
| #define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff |
| |
| /* RTAS event severity */ |
| #define RTAS_SEVERITY_FATAL 0x5 |
| #define RTAS_SEVERITY_ERROR 0x4 |
| #define RTAS_SEVERITY_ERROR_SYNC 0x3 |
| #define RTAS_SEVERITY_WARNING 0x2 |
| #define RTAS_SEVERITY_EVENT 0x1 |
| #define RTAS_SEVERITY_NO_ERROR 0x0 |
| |
| /* RTAS event disposition */ |
| #define RTAS_DISP_FULLY_RECOVERED 0x0 |
| #define RTAS_DISP_LIMITED_RECOVERY 0x1 |
| #define RTAS_DISP_NOT_RECOVERED 0x2 |
| |
| /* RTAS event initiator */ |
| #define RTAS_INITIATOR_UNKNOWN 0x0 |
| #define RTAS_INITIATOR_CPU 0x1 |
| #define RTAS_INITIATOR_PCI 0x2 |
| #define RTAS_INITIATOR_ISA 0x3 |
| #define RTAS_INITIATOR_MEMORY 0x4 |
| #define RTAS_INITIATOR_POWERMGM 0x5 |
| |
| /* RTAS event target */ |
| #define RTAS_TARGET_UNKNOWN 0x0 |
| #define RTAS_TARGET_CPU 0x1 |
| #define RTAS_TARGET_PCI 0x2 |
| #define RTAS_TARGET_ISA 0x3 |
| #define RTAS_TARGET_MEMORY 0x4 |
| #define RTAS_TARGET_POWERMGM 0x5 |
| |
| /* RTAS event type */ |
| #define RTAS_TYPE_RETRY 0x01 |
| #define RTAS_TYPE_TCE_ERR 0x02 |
| #define RTAS_TYPE_INTERN_DEV_FAIL 0x03 |
| #define RTAS_TYPE_TIMEOUT 0x04 |
| #define RTAS_TYPE_DATA_PARITY 0x05 |
| #define RTAS_TYPE_ADDR_PARITY 0x06 |
| #define RTAS_TYPE_CACHE_PARITY 0x07 |
| #define RTAS_TYPE_ADDR_INVALID 0x08 |
| #define RTAS_TYPE_ECC_UNCORR 0x09 |
| #define RTAS_TYPE_ECC_CORR 0x0a |
| #define RTAS_TYPE_EPOW 0x40 |
| #define RTAS_TYPE_PLATFORM 0xE0 |
| #define RTAS_TYPE_IO 0xE1 |
| #define RTAS_TYPE_INFO 0xE2 |
| #define RTAS_TYPE_DEALLOC 0xE3 |
| #define RTAS_TYPE_DUMP 0xE4 |
| /* I don't add PowerMGM events right now, this is a different topic */ |
| #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 |
| #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 |
| #define RTAS_TYPE_PMGM_LID_OPEN 0x62 |
| #define RTAS_TYPE_PMGM_LID_CLOSE 0x63 |
| #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 |
| #define RTAS_TYPE_PMGM_WAKE_BTN 0x65 |
| #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 |
| #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 |
| #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 |
| #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 |
| #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a |
| #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b |
| #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c |
| #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d |
| #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e |
| #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f |
| #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 |
| #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 |
| /* Platform Resource Reassignment Notification */ |
| #define RTAS_TYPE_PRRN 0xA0 |
| |
| /* RTAS check-exception vector offset */ |
| #define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 |
| |
| struct rtas_error_log { |
| unsigned long version:8; /* Architectural version */ |
| unsigned long severity:3; /* Severity level of error */ |
| unsigned long disposition:2; /* Degree of recovery */ |
| unsigned long extended:1; /* extended log present? */ |
| unsigned long /* reserved */ :2; /* Reserved for future use */ |
| unsigned long initiator:4; /* Initiator of event */ |
| unsigned long target:4; /* Target of failed operation */ |
| unsigned long type:8; /* General event or error*/ |
| unsigned long extended_log_length:32; /* length in bytes */ |
| unsigned char buffer[1]; /* Start of extended log */ |
| /* Variable length. */ |
| }; |
| |
| #define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14 |
| |
| #define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) |
| |
| /* RTAS general extended event log, Version 6. The extended log starts |
| * from "buffer" field of struct rtas_error_log defined above. |
| */ |
| struct rtas_ext_event_log_v6 { |
| /* Byte 0 */ |
| uint32_t log_valid:1; /* 1:Log valid */ |
| uint32_t unrecoverable_error:1; /* 1:Unrecoverable error */ |
| uint32_t recoverable_error:1; /* 1:recoverable (correctable */ |
| /* or successfully retried) */ |
| uint32_t degraded_operation:1; /* 1:Unrecoverable err, bypassed*/ |
| /* - degraded operation (e.g. */ |
| /* CPU or mem taken off-line) */ |
| uint32_t predictive_error:1; |
| uint32_t new_log:1; /* 1:"New" log (Always 1 for */ |
| /* data returned from RTAS */ |
| uint32_t big_endian:1; /* 1: Big endian */ |
| uint32_t :1; /* reserved */ |
| /* Byte 1 */ |
| uint32_t :8; /* reserved */ |
| /* Byte 2 */ |
| uint32_t powerpc_format:1; /* Set to 1 (indicating log is */ |
| /* in PowerPC format */ |
| uint32_t :3; /* reserved */ |
| uint32_t log_format:4; /* Log format indicator. Define */ |
| /* format used for byte 12-2047 */ |
| /* Byte 3 */ |
| uint32_t :8; /* reserved */ |
| /* Byte 4-11 */ |
| uint8_t reserved[8]; /* reserved */ |
| /* Byte 12-15 */ |
| uint32_t company_id; /* Company ID of the company */ |
| /* that defines the format for */ |
| /* the vendor specific log type */ |
| /* Byte 16-end of log */ |
| uint8_t vendor_log[1]; /* Start of vendor specific log */ |
| /* Variable length. */ |
| }; |
| |
| /* pSeries event log format */ |
| |
| /* Two bytes ASCII section IDs */ |
| #define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H') |
| #define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H') |
| #define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S') |
| #define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H') |
| #define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T') |
| #define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S') |
| #define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H') |
| #define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W') |
| #define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P') |
| #define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R') |
| #define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M') |
| #define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P') |
| #define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E') |
| #define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I') |
| #define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H') |
| #define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D') |
| |
| /* Vendor specific Platform Event Log Format, Version 6, section header */ |
| struct pseries_errorlog { |
| uint16_t id; /* 0x00 2-byte ASCII section ID */ |
| uint16_t length; /* 0x02 Section length in bytes */ |
| uint8_t version; /* 0x04 Section version */ |
| uint8_t subtype; /* 0x05 Section subtype */ |
| uint16_t creator_component; /* 0x06 Creator component ID */ |
| uint8_t data[]; /* 0x08 Start of section data */ |
| }; |
| |
| struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, |
| uint16_t section_id); |
| |
| /* |
| * This can be set by the rtas_flash module so that it can get called |
| * as the absolutely last thing before the kernel terminates. |
| */ |
| extern void (*rtas_flash_term_hook)(int); |
| |
| extern struct rtas_t rtas; |
| |
| extern void enter_rtas(unsigned long); |
| extern int rtas_token(const char *service); |
| extern int rtas_service_present(const char *service); |
| extern int rtas_call(int token, int, int, int *, ...); |
| extern void rtas_restart(char *cmd); |
| extern void rtas_power_off(void); |
| extern void rtas_halt(void); |
| extern void rtas_os_term(char *str); |
| extern int rtas_get_sensor(int sensor, int index, int *state); |
| extern int rtas_get_power_level(int powerdomain, int *level); |
| extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); |
| extern bool rtas_indicator_present(int token, int *maxindex); |
| extern int rtas_set_indicator(int indicator, int index, int new_value); |
| extern int rtas_set_indicator_fast(int indicator, int index, int new_value); |
| extern void rtas_progress(char *s, unsigned short hex); |
| extern void rtas_initialize(void); |
| extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); |
| extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); |
| extern int rtas_online_cpus_mask(cpumask_var_t cpus); |
| extern int rtas_offline_cpus_mask(cpumask_var_t cpus); |
| extern int rtas_ibm_suspend_me(struct rtas_args *); |
| |
| struct rtc_time; |
| extern unsigned long rtas_get_boot_time(void); |
| extern void rtas_get_rtc_time(struct rtc_time *rtc_time); |
| extern int rtas_set_rtc_time(struct rtc_time *rtc_time); |
| |
| extern unsigned int rtas_busy_delay_time(int status); |
| extern unsigned int rtas_busy_delay(int status); |
| |
| extern int early_init_dt_scan_rtas(unsigned long node, |
| const char *uname, int depth, void *data); |
| |
| extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); |
| |
| #ifdef CONFIG_PPC_PSERIES |
| extern int pseries_devicetree_update(s32 scope); |
| #endif |
| |
| #ifdef CONFIG_PPC_RTAS_DAEMON |
| extern void rtas_cancel_event_scan(void); |
| #else |
| static inline void rtas_cancel_event_scan(void) { } |
| #endif |
| |
| /* Error types logged. */ |
| #define ERR_FLAG_ALREADY_LOGGED 0x0 |
| #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ |
| #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ |
| #define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */ |
| #define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */ |
| |
| /* All the types and not flags */ |
| #define ERR_TYPE_MASK \ |
| (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ) |
| |
| #define RTAS_DEBUG KERN_DEBUG "RTAS: " |
| |
| #define RTAS_ERROR_LOG_MAX 2048 |
| |
| /* |
| * Return the firmware-specified size of the error log buffer |
| * for all rtas calls that require an error buffer argument. |
| * This includes 'check-exception' and 'rtas-last-error'. |
| */ |
| extern int rtas_get_error_log_max(void); |
| |
| /* Event Scan Parameters */ |
| #define EVENT_SCAN_ALL_EVENTS 0xf0000000 |
| #define SURVEILLANCE_TOKEN 9000 |
| #define LOG_NUMBER 64 /* must be a power of two */ |
| #define LOG_NUMBER_MASK (LOG_NUMBER-1) |
| |
| /* Some RTAS ops require a data buffer and that buffer must be < 4G. |
| * Rather than having a memory allocator, just use this buffer |
| * (get the lock first), make the RTAS call. Copy the data instead |
| * of holding the buffer for long. |
| */ |
| |
| #define RTAS_DATA_BUF_SIZE 4096 |
| extern spinlock_t rtas_data_buf_lock; |
| extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; |
| |
| /* RMO buffer reserved for user-space RTAS use */ |
| extern unsigned long rtas_rmo_buf; |
| |
| #define GLOBAL_INTERRUPT_QUEUE 9005 |
| |
| /** |
| * rtas_config_addr - Format a busno, devfn and reg for RTAS. |
| * @busno: The bus number. |
| * @devfn: The device and function number as encoded by PCI_DEVFN(). |
| * @reg: The register number. |
| * |
| * This function encodes the given busno, devfn and register number as |
| * required for RTAS calls that take a "config_addr" parameter. |
| * See PAPR requirement 7.3.4-1 for more info. |
| */ |
| static inline u32 rtas_config_addr(int busno, int devfn, int reg) |
| { |
| return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | |
| (devfn << 8) | (reg & 0xff); |
| } |
| |
| extern void __cpuinit rtas_give_timebase(void); |
| extern void __cpuinit rtas_take_timebase(void); |
| |
| #ifdef CONFIG_PPC_RTAS |
| static inline int page_is_rtas_user_buf(unsigned long pfn) |
| { |
| unsigned long paddr = (pfn << PAGE_SHIFT); |
| if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX)) |
| return 1; |
| return 0; |
| } |
| |
| /* Not the best place to put pSeries_coalesce_init, will be fixed when we |
| * move some of the rtas suspend-me stuff to pseries */ |
| extern void pSeries_coalesce_init(void); |
| #else |
| static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} |
| static inline void pSeries_coalesce_init(void) { } |
| #endif |
| |
| extern int call_rtas(const char *, int, int, unsigned long *, ...); |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _POWERPC_RTAS_H */ |