| #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_POWERMGM_EVENTS 0x20000000 /* set bit 2 */ | |
| #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 | |
| /* 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. */ | |
| }; | |
| /* | |
| * 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_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); | |
| /* 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 panic() */ | |
| /* All the types and not flags */ | |
| #define ERR_TYPE_MASK (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC) | |
| #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); | |
| #endif /* __KERNEL__ */ | |
| #endif /* _POWERPC_RTAS_H */ |