1#ifndef _PPC64_RTAS_H 2#define _PPC64_RTAS_H 3 4#include <linux/spinlock.h> 5#include <asm/page.h> 6 7/* 8 * Definitions for talking to the RTAS on CHRP machines. 9 * 10 * Copyright (C) 2001 Peter Bergner 11 * Copyright (C) 2001 PPC 64 Team, IBM Corp 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License 15 * as published by the Free Software Foundation; either version 16 * 2 of the License, or (at your option) any later version. 17 */ 18 19#define RTAS_UNKNOWN_SERVICE (-1) 20#define RTAS_INSTANTIATE_MAX (1UL<<30) /* Don't instantiate rtas at/above this value */ 21 22/* 23 * In general to call RTAS use rtas_token("string") to lookup 24 * an RTAS token for the given string (e.g. "event-scan"). 25 * To actually perform the call use 26 * ret = rtas_call(token, n_in, n_out, ...) 27 * Where n_in is the number of input parameters and 28 * n_out is the number of output parameters 29 * 30 * If the "string" is invalid on this system, RTAS_UNKOWN_SERVICE 31 * will be returned as a token. rtas_call() does look for this 32 * token and error out gracefully so rtas_call(rtas_token("str"), ...) 33 * may be safely used for one-shot calls to RTAS. 34 * 35 */ 36 37typedef u32 rtas_arg_t; 38 39struct rtas_args { 40 u32 token; 41 u32 nargs; 42 u32 nret; 43 rtas_arg_t args[16]; 44 rtas_arg_t *rets; /* Pointer to return values in args[]. */ 45}; 46 47struct rtas_t { 48 unsigned long entry; /* physical address pointer */ 49 unsigned long base; /* physical address pointer */ 50 unsigned long size; 51 spinlock_t lock; 52 53 struct device_node *dev; /* virtual address pointer */ 54}; 55 56/* Event classes */ 57#define INTERNAL_ERROR 0x80000000 /* set bit 0 */ 58#define EPOW_WARNING 0x40000000 /* set bit 1 */ 59#define POWERMGM_EVENTS 0x20000000 /* set bit 2 */ 60#define HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ 61#define EVENT_SCAN_ALL_EVENTS 0xf0000000 62 63/* event-scan returns */ 64#define SEVERITY_FATAL 0x5 65#define SEVERITY_ERROR 0x4 66#define SEVERITY_ERROR_SYNC 0x3 67#define SEVERITY_WARNING 0x2 68#define SEVERITY_EVENT 0x1 69#define SEVERITY_NO_ERROR 0x0 70#define DISP_FULLY_RECOVERED 0x0 71#define DISP_LIMITED_RECOVERY 0x1 72#define DISP_NOT_RECOVERED 0x2 73#define PART_PRESENT 0x0 74#define PART_NOT_PRESENT 0x1 75#define INITIATOR_UNKNOWN 0x0 76#define INITIATOR_CPU 0x1 77#define INITIATOR_PCI 0x2 78#define INITIATOR_ISA 0x3 79#define INITIATOR_MEMORY 0x4 80#define INITIATOR_POWERMGM 0x5 81#define TARGET_UNKNOWN 0x0 82#define TARGET_CPU 0x1 83#define TARGET_PCI 0x2 84#define TARGET_ISA 0x3 85#define TARGET_MEMORY 0x4 86#define TARGET_POWERMGM 0x5 87#define TYPE_RETRY 0x01 88#define TYPE_TCE_ERR 0x02 89#define TYPE_INTERN_DEV_FAIL 0x03 90#define TYPE_TIMEOUT 0x04 91#define TYPE_DATA_PARITY 0x05 92#define TYPE_ADDR_PARITY 0x06 93#define TYPE_CACHE_PARITY 0x07 94#define TYPE_ADDR_INVALID 0x08 95#define TYPE_ECC_UNCORR 0x09 96#define TYPE_ECC_CORR 0x0a 97#define TYPE_EPOW 0x40 98/* I don't add PowerMGM events right now, this is a different topic */ 99#define TYPE_PMGM_POWER_SW_ON 0x60 100#define TYPE_PMGM_POWER_SW_OFF 0x61 101#define TYPE_PMGM_LID_OPEN 0x62 102#define TYPE_PMGM_LID_CLOSE 0x63 103#define TYPE_PMGM_SLEEP_BTN 0x64 104#define TYPE_PMGM_WAKE_BTN 0x65 105#define TYPE_PMGM_BATTERY_WARN 0x66 106#define TYPE_PMGM_BATTERY_CRIT 0x67 107#define TYPE_PMGM_SWITCH_TO_BAT 0x68 108#define TYPE_PMGM_SWITCH_TO_AC 0x69 109#define TYPE_PMGM_KBD_OR_MOUSE 0x6a 110#define TYPE_PMGM_ENCLOS_OPEN 0x6b 111#define TYPE_PMGM_ENCLOS_CLOSED 0x6c 112#define TYPE_PMGM_RING_INDICATE 0x6d 113#define TYPE_PMGM_LAN_ATTENTION 0x6e 114#define TYPE_PMGM_TIME_ALARM 0x6f 115#define TYPE_PMGM_CONFIG_CHANGE 0x70 116#define TYPE_PMGM_SERVICE_PROC 0x71 117 118struct rtas_error_log { 119 unsigned long version:8; /* Architectural version */ 120 unsigned long severity:3; /* Severity level of error */ 121 unsigned long disposition:2; /* Degree of recovery */ 122 unsigned long extended:1; /* extended log present? */ 123 unsigned long /* reserved */ :2; /* Reserved for future use */ 124 unsigned long initiator:4; /* Initiator of event */ 125 unsigned long target:4; /* Target of failed operation */ 126 unsigned long type:8; /* General event or error*/ 127 unsigned long extended_log_length:32; /* length in bytes */ 128 unsigned char buffer[1]; /* allocated by klimit bump */ 129}; 130 131struct flash_block { 132 char *data; 133 unsigned long length; 134}; 135 136/* This struct is very similar but not identical to 137 * that needed by the rtas flash update. 138 * All we need to do for rtas is rewrite num_blocks 139 * into a version/length and translate the pointers 140 * to absolute. 141 */ 142#define FLASH_BLOCKS_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct flash_block)) 143struct flash_block_list { 144 unsigned long num_blocks; 145 struct flash_block_list *next; 146 struct flash_block blocks[FLASH_BLOCKS_PER_NODE]; 147}; 148struct flash_block_list_header { /* just the header of flash_block_list */ 149 unsigned long num_blocks; 150 struct flash_block_list *next; 151}; 152extern struct flash_block_list_header rtas_firmware_flash_list; 153 154extern struct rtas_t rtas; 155 156extern void enter_rtas(struct rtas_args *); 157extern int rtas_token(const char *service); 158extern long rtas_call(int token, int, int, unsigned long *, ...); 159extern void phys_call_rtas(int, int, int, ...); 160extern void phys_call_rtas_display_status(char); 161extern void call_rtas_display_status(char); 162extern void rtas_restart(char *cmd); 163extern void rtas_power_off(void); 164extern void rtas_halt(void); 165 166extern struct proc_dir_entry *rtas_proc_dir; 167 168 169#endif /* _PPC64_RTAS_H */ 170