1 #ifndef _POWERPC_RTAS_H
2 #define _POWERPC_RTAS_H
5 #include <linux/spinlock.h>
9 * Definitions for talking to the RTAS on CHRP machines.
11 * Copyright (C) 2001 Peter Bergner
12 * Copyright (C) 2001 PPC 64 Team, IBM Corp
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version
17 * 2 of the License, or (at your option) any later version.
20 #define RTAS_UNKNOWN_SERVICE (-1)
21 #define RTAS_INSTANTIATE_MAX (1UL<<30) /* Don't instantiate rtas at/above this value */
23 /* Buffer size for ppc_rtas system call. */
24 #define RTAS_RMOBUF_MAX (64 * 1024)
26 /* RTAS return status codes */
27 #define RTAS_BUSY -2 /* RTAS Busy */
28 #define RTAS_EXTENDED_DELAY_MIN 9900
29 #define RTAS_EXTENDED_DELAY_MAX 9905
32 * In general to call RTAS use rtas_token("string") to lookup
33 * an RTAS token for the given string (e.g. "event-scan").
34 * To actually perform the call use
35 * ret = rtas_call(token, n_in, n_out, ...)
36 * Where n_in is the number of input parameters and
37 * n_out is the number of output parameters
39 * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE
40 * will be returned as a token. rtas_call() does look for this
41 * token and error out gracefully so rtas_call(rtas_token("str"), ...)
42 * may be safely used for one-shot calls to RTAS.
46 typedef u32 rtas_arg_t;
53 rtas_arg_t *rets; /* Pointer to return values in args[]. */
56 extern struct rtas_args rtas_stop_self_args;
59 unsigned long entry; /* physical address pointer */
60 unsigned long base; /* physical address pointer */
63 struct rtas_args args;
64 struct device_node *dev; /* virtual address pointer */
67 /* RTAS event classes */
68 #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */
69 #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */
70 #define RTAS_POWERMGM_EVENTS 0x20000000 /* set bit 2 */
71 #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */
72 #define RTAS_EVENT_SCAN_ALL_EVENTS 0xf0000000
74 /* RTAS event severity */
75 #define RTAS_SEVERITY_FATAL 0x5
76 #define RTAS_SEVERITY_ERROR 0x4
77 #define RTAS_SEVERITY_ERROR_SYNC 0x3
78 #define RTAS_SEVERITY_WARNING 0x2
79 #define RTAS_SEVERITY_EVENT 0x1
80 #define RTAS_SEVERITY_NO_ERROR 0x0
82 /* RTAS event disposition */
83 #define RTAS_DISP_FULLY_RECOVERED 0x0
84 #define RTAS_DISP_LIMITED_RECOVERY 0x1
85 #define RTAS_DISP_NOT_RECOVERED 0x2
87 /* RTAS event initiator */
88 #define RTAS_INITIATOR_UNKNOWN 0x0
89 #define RTAS_INITIATOR_CPU 0x1
90 #define RTAS_INITIATOR_PCI 0x2
91 #define RTAS_INITIATOR_ISA 0x3
92 #define RTAS_INITIATOR_MEMORY 0x4
93 #define RTAS_INITIATOR_POWERMGM 0x5
95 /* RTAS event target */
96 #define RTAS_TARGET_UNKNOWN 0x0
97 #define RTAS_TARGET_CPU 0x1
98 #define RTAS_TARGET_PCI 0x2
99 #define RTAS_TARGET_ISA 0x3
100 #define RTAS_TARGET_MEMORY 0x4
101 #define RTAS_TARGET_POWERMGM 0x5
103 /* RTAS event type */
104 #define RTAS_TYPE_RETRY 0x01
105 #define RTAS_TYPE_TCE_ERR 0x02
106 #define RTAS_TYPE_INTERN_DEV_FAIL 0x03
107 #define RTAS_TYPE_TIMEOUT 0x04
108 #define RTAS_TYPE_DATA_PARITY 0x05
109 #define RTAS_TYPE_ADDR_PARITY 0x06
110 #define RTAS_TYPE_CACHE_PARITY 0x07
111 #define RTAS_TYPE_ADDR_INVALID 0x08
112 #define RTAS_TYPE_ECC_UNCORR 0x09
113 #define RTAS_TYPE_ECC_CORR 0x0a
114 #define RTAS_TYPE_EPOW 0x40
115 #define RTAS_TYPE_PLATFORM 0xE0
116 #define RTAS_TYPE_IO 0xE1
117 #define RTAS_TYPE_INFO 0xE2
118 #define RTAS_TYPE_DEALLOC 0xE3
119 #define RTAS_TYPE_DUMP 0xE4
120 /* I don't add PowerMGM events right now, this is a different topic */
121 #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60
122 #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61
123 #define RTAS_TYPE_PMGM_LID_OPEN 0x62
124 #define RTAS_TYPE_PMGM_LID_CLOSE 0x63
125 #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64
126 #define RTAS_TYPE_PMGM_WAKE_BTN 0x65
127 #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66
128 #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67
129 #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68
130 #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69
131 #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a
132 #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b
133 #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c
134 #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d
135 #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e
136 #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f
137 #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70
138 #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71
140 struct rtas_error_log {
141 unsigned long version:8; /* Architectural version */
142 unsigned long severity:3; /* Severity level of error */
143 unsigned long disposition:2; /* Degree of recovery */
144 unsigned long extended:1; /* extended log present? */
145 unsigned long /* reserved */ :2; /* Reserved for future use */
146 unsigned long initiator:4; /* Initiator of event */
147 unsigned long target:4; /* Target of failed operation */
148 unsigned long type:8; /* General event or error*/
149 unsigned long extended_log_length:32; /* length in bytes */
150 unsigned char buffer[1];
154 * This can be set by the rtas_flash module so that it can get called
155 * as the absolutely last thing before the kernel terminates.
157 extern void (*rtas_flash_term_hook)(int);
159 extern struct rtas_t rtas;
161 extern void enter_rtas(unsigned long);
162 extern int rtas_token(const char *service);
163 extern int rtas_call(int token, int, int, int *, ...);
164 extern void rtas_restart(char *cmd);
165 extern void rtas_power_off(void);
166 extern void rtas_halt(void);
167 extern void rtas_os_term(char *str);
168 extern int rtas_get_sensor(int sensor, int index, int *state);
169 extern int rtas_get_power_level(int powerdomain, int *level);
170 extern int rtas_set_power_level(int powerdomain, int level, int *setlevel);
171 extern int rtas_set_indicator(int indicator, int index, int new_value);
172 extern void rtas_progress(char *s, unsigned short hex);
173 extern void rtas_initialize(void);
176 extern unsigned long rtas_get_boot_time(void);
177 extern void rtas_get_rtc_time(struct rtc_time *rtc_time);
178 extern int rtas_set_rtc_time(struct rtc_time *rtc_time);
180 /* Given an RTAS status code of 9900..9905 compute the hinted delay */
181 unsigned int rtas_extended_busy_delay_time(int status);
182 static inline int rtas_is_extended_busy(int status)
184 return status >= 9900 && status <= 9909;
187 extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal);
189 /* Error types logged. */
190 #define ERR_FLAG_ALREADY_LOGGED 0x0
191 #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */
192 #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */
193 #define ERR_TYPE_KERNEL_PANIC 0x4 /* from panic() */
195 /* All the types and not flags */
196 #define ERR_TYPE_MASK (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC)
198 #define RTAS_DEBUG KERN_DEBUG "RTAS: "
200 #define RTAS_ERROR_LOG_MAX 2048
203 * Return the firmware-specified size of the error log buffer
204 * for all rtas calls that require an error buffer argument.
205 * This includes 'check-exception' and 'rtas-last-error'.
207 extern int rtas_get_error_log_max(void);
209 /* Event Scan Parameters */
210 #define EVENT_SCAN_ALL_EVENTS 0xf0000000
211 #define SURVEILLANCE_TOKEN 9000
212 #define LOG_NUMBER 64 /* must be a power of two */
213 #define LOG_NUMBER_MASK (LOG_NUMBER-1)
215 /* Some RTAS ops require a data buffer and that buffer must be < 4G.
216 * Rather than having a memory allocator, just use this buffer
217 * (get the lock first), make the RTAS call. Copy the data instead
218 * of holding the buffer for long.
221 #define RTAS_DATA_BUF_SIZE 4096
222 extern spinlock_t rtas_data_buf_lock;
223 extern char rtas_data_buf[RTAS_DATA_BUF_SIZE];
225 extern void rtas_stop_self(void);
227 /* RMO buffer reserved for user-space RTAS use */
228 extern unsigned long rtas_rmo_buf;
230 #define GLOBAL_INTERRUPT_QUEUE 9005
232 #endif /* __KERNEL__ */
233 #endif /* _POWERPC_RTAS_H */