#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 (1UL<<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; spinlock_t lock; struct rtas_args args; struct device_node *dev; /* virtual address pointer */ }; /* 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_EVENT_SCAN_ALL_EVENTS 0xf0000000 /* 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 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]; }; /* * 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_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 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); 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); } #endif /* __KERNEL__ */ #endif /* _POWERPC_RTAS_H */