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1 | #ifndef _POWERPC_RTAS_H |
2 | #define _POWERPC_RTAS_H | |
88ced031 | 3 | #ifdef __KERNEL__ |
9b6b563c PM |
4 | |
5 | #include <linux/spinlock.h> | |
6 | #include <asm/page.h> | |
7 | ||
8 | /* | |
9 | * Definitions for talking to the RTAS on CHRP machines. | |
10 | * | |
11 | * Copyright (C) 2001 Peter Bergner | |
12 | * Copyright (C) 2001 PPC 64 Team, IBM Corp | |
13 | * | |
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. | |
18 | */ | |
19 | ||
20 | #define RTAS_UNKNOWN_SERVICE (-1) | |
21 | #define RTAS_INSTANTIATE_MAX (1UL<<30) /* Don't instantiate rtas at/above this value */ | |
22 | ||
23 | /* Buffer size for ppc_rtas system call. */ | |
24 | #define RTAS_RMOBUF_MAX (64 * 1024) | |
25 | ||
26 | /* RTAS return status codes */ | |
368a6ba5 | 27 | #define RTAS_NOT_SUSPENDABLE -9004 |
9b6b563c PM |
28 | #define RTAS_BUSY -2 /* RTAS Busy */ |
29 | #define RTAS_EXTENDED_DELAY_MIN 9900 | |
30 | #define RTAS_EXTENDED_DELAY_MAX 9905 | |
31 | ||
32 | /* | |
33 | * In general to call RTAS use rtas_token("string") to lookup | |
34 | * an RTAS token for the given string (e.g. "event-scan"). | |
35 | * To actually perform the call use | |
36 | * ret = rtas_call(token, n_in, n_out, ...) | |
37 | * Where n_in is the number of input parameters and | |
38 | * n_out is the number of output parameters | |
39 | * | |
40 | * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE | |
41 | * will be returned as a token. rtas_call() does look for this | |
42 | * token and error out gracefully so rtas_call(rtas_token("str"), ...) | |
43 | * may be safely used for one-shot calls to RTAS. | |
44 | * | |
45 | */ | |
46 | ||
47 | typedef u32 rtas_arg_t; | |
48 | ||
49 | struct rtas_args { | |
50 | u32 token; | |
51 | u32 nargs; | |
52 | u32 nret; | |
53 | rtas_arg_t args[16]; | |
54 | rtas_arg_t *rets; /* Pointer to return values in args[]. */ | |
55 | }; | |
56 | ||
57 | extern struct rtas_args rtas_stop_self_args; | |
58 | ||
59 | struct rtas_t { | |
60 | unsigned long entry; /* physical address pointer */ | |
61 | unsigned long base; /* physical address pointer */ | |
62 | unsigned long size; | |
63 | spinlock_t lock; | |
64 | struct rtas_args args; | |
65 | struct device_node *dev; /* virtual address pointer */ | |
66 | }; | |
67 | ||
68 | /* RTAS event classes */ | |
69 | #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ | |
70 | #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ | |
71 | #define RTAS_POWERMGM_EVENTS 0x20000000 /* set bit 2 */ | |
72 | #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ | |
73 | #define RTAS_EVENT_SCAN_ALL_EVENTS 0xf0000000 | |
74 | ||
75 | /* RTAS event severity */ | |
76 | #define RTAS_SEVERITY_FATAL 0x5 | |
77 | #define RTAS_SEVERITY_ERROR 0x4 | |
78 | #define RTAS_SEVERITY_ERROR_SYNC 0x3 | |
79 | #define RTAS_SEVERITY_WARNING 0x2 | |
80 | #define RTAS_SEVERITY_EVENT 0x1 | |
81 | #define RTAS_SEVERITY_NO_ERROR 0x0 | |
82 | ||
83 | /* RTAS event disposition */ | |
84 | #define RTAS_DISP_FULLY_RECOVERED 0x0 | |
85 | #define RTAS_DISP_LIMITED_RECOVERY 0x1 | |
86 | #define RTAS_DISP_NOT_RECOVERED 0x2 | |
87 | ||
88 | /* RTAS event initiator */ | |
89 | #define RTAS_INITIATOR_UNKNOWN 0x0 | |
90 | #define RTAS_INITIATOR_CPU 0x1 | |
91 | #define RTAS_INITIATOR_PCI 0x2 | |
92 | #define RTAS_INITIATOR_ISA 0x3 | |
93 | #define RTAS_INITIATOR_MEMORY 0x4 | |
94 | #define RTAS_INITIATOR_POWERMGM 0x5 | |
95 | ||
96 | /* RTAS event target */ | |
97 | #define RTAS_TARGET_UNKNOWN 0x0 | |
98 | #define RTAS_TARGET_CPU 0x1 | |
99 | #define RTAS_TARGET_PCI 0x2 | |
100 | #define RTAS_TARGET_ISA 0x3 | |
101 | #define RTAS_TARGET_MEMORY 0x4 | |
102 | #define RTAS_TARGET_POWERMGM 0x5 | |
103 | ||
104 | /* RTAS event type */ | |
105 | #define RTAS_TYPE_RETRY 0x01 | |
106 | #define RTAS_TYPE_TCE_ERR 0x02 | |
107 | #define RTAS_TYPE_INTERN_DEV_FAIL 0x03 | |
108 | #define RTAS_TYPE_TIMEOUT 0x04 | |
109 | #define RTAS_TYPE_DATA_PARITY 0x05 | |
110 | #define RTAS_TYPE_ADDR_PARITY 0x06 | |
111 | #define RTAS_TYPE_CACHE_PARITY 0x07 | |
112 | #define RTAS_TYPE_ADDR_INVALID 0x08 | |
113 | #define RTAS_TYPE_ECC_UNCORR 0x09 | |
114 | #define RTAS_TYPE_ECC_CORR 0x0a | |
115 | #define RTAS_TYPE_EPOW 0x40 | |
116 | #define RTAS_TYPE_PLATFORM 0xE0 | |
117 | #define RTAS_TYPE_IO 0xE1 | |
118 | #define RTAS_TYPE_INFO 0xE2 | |
119 | #define RTAS_TYPE_DEALLOC 0xE3 | |
120 | #define RTAS_TYPE_DUMP 0xE4 | |
121 | /* I don't add PowerMGM events right now, this is a different topic */ | |
122 | #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 | |
123 | #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 | |
124 | #define RTAS_TYPE_PMGM_LID_OPEN 0x62 | |
125 | #define RTAS_TYPE_PMGM_LID_CLOSE 0x63 | |
126 | #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 | |
127 | #define RTAS_TYPE_PMGM_WAKE_BTN 0x65 | |
128 | #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 | |
129 | #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 | |
130 | #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 | |
131 | #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 | |
132 | #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a | |
133 | #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b | |
134 | #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c | |
135 | #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d | |
136 | #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e | |
137 | #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f | |
138 | #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 | |
139 | #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 | |
140 | ||
141 | struct rtas_error_log { | |
142 | unsigned long version:8; /* Architectural version */ | |
143 | unsigned long severity:3; /* Severity level of error */ | |
144 | unsigned long disposition:2; /* Degree of recovery */ | |
145 | unsigned long extended:1; /* extended log present? */ | |
146 | unsigned long /* reserved */ :2; /* Reserved for future use */ | |
147 | unsigned long initiator:4; /* Initiator of event */ | |
148 | unsigned long target:4; /* Target of failed operation */ | |
149 | unsigned long type:8; /* General event or error*/ | |
150 | unsigned long extended_log_length:32; /* length in bytes */ | |
151 | unsigned char buffer[1]; | |
152 | }; | |
153 | ||
f4fcbbe9 PM |
154 | /* |
155 | * This can be set by the rtas_flash module so that it can get called | |
156 | * as the absolutely last thing before the kernel terminates. | |
9b6b563c | 157 | */ |
f4fcbbe9 | 158 | extern void (*rtas_flash_term_hook)(int); |
9b6b563c PM |
159 | |
160 | extern struct rtas_t rtas; | |
161 | ||
162 | extern void enter_rtas(unsigned long); | |
163 | extern int rtas_token(const char *service); | |
164 | extern int rtas_call(int token, int, int, int *, ...); | |
9b6b563c PM |
165 | extern void rtas_restart(char *cmd); |
166 | extern void rtas_power_off(void); | |
167 | extern void rtas_halt(void); | |
168 | extern void rtas_os_term(char *str); | |
169 | extern int rtas_get_sensor(int sensor, int index, int *state); | |
170 | extern int rtas_get_power_level(int powerdomain, int *level); | |
171 | extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); | |
172 | extern int rtas_set_indicator(int indicator, int index, int new_value); | |
81b73dd9 | 173 | extern int rtas_set_indicator_fast(int indicator, int index, int new_value); |
9b6b563c PM |
174 | extern void rtas_progress(char *s, unsigned short hex); |
175 | extern void rtas_initialize(void); | |
176 | ||
177 | struct rtc_time; | |
143a1dec | 178 | extern unsigned long rtas_get_boot_time(void); |
9b6b563c PM |
179 | extern void rtas_get_rtc_time(struct rtc_time *rtc_time); |
180 | extern int rtas_set_rtc_time(struct rtc_time *rtc_time); | |
181 | ||
507279db JR |
182 | extern unsigned int rtas_busy_delay_time(int status); |
183 | extern unsigned int rtas_busy_delay(int status); | |
9b6b563c | 184 | |
458148c0 ME |
185 | extern int early_init_dt_scan_rtas(unsigned long node, |
186 | const char *uname, int depth, void *data); | |
187 | ||
9b6b563c PM |
188 | extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); |
189 | ||
190 | /* Error types logged. */ | |
191 | #define ERR_FLAG_ALREADY_LOGGED 0x0 | |
192 | #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ | |
193 | #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ | |
194 | #define ERR_TYPE_KERNEL_PANIC 0x4 /* from panic() */ | |
195 | ||
196 | /* All the types and not flags */ | |
197 | #define ERR_TYPE_MASK (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC) | |
198 | ||
199 | #define RTAS_DEBUG KERN_DEBUG "RTAS: " | |
200 | ||
201 | #define RTAS_ERROR_LOG_MAX 2048 | |
202 | ||
203 | /* | |
204 | * Return the firmware-specified size of the error log buffer | |
205 | * for all rtas calls that require an error buffer argument. | |
206 | * This includes 'check-exception' and 'rtas-last-error'. | |
207 | */ | |
208 | extern int rtas_get_error_log_max(void); | |
209 | ||
210 | /* Event Scan Parameters */ | |
211 | #define EVENT_SCAN_ALL_EVENTS 0xf0000000 | |
212 | #define SURVEILLANCE_TOKEN 9000 | |
213 | #define LOG_NUMBER 64 /* must be a power of two */ | |
214 | #define LOG_NUMBER_MASK (LOG_NUMBER-1) | |
215 | ||
216 | /* Some RTAS ops require a data buffer and that buffer must be < 4G. | |
217 | * Rather than having a memory allocator, just use this buffer | |
218 | * (get the lock first), make the RTAS call. Copy the data instead | |
219 | * of holding the buffer for long. | |
220 | */ | |
221 | ||
222 | #define RTAS_DATA_BUF_SIZE 4096 | |
223 | extern spinlock_t rtas_data_buf_lock; | |
224 | extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; | |
225 | ||
226 | extern void rtas_stop_self(void); | |
227 | ||
228 | /* RMO buffer reserved for user-space RTAS use */ | |
229 | extern unsigned long rtas_rmo_buf; | |
230 | ||
231 | #define GLOBAL_INTERRUPT_QUEUE 9005 | |
232 | ||
88ced031 | 233 | #endif /* __KERNEL__ */ |
9b6b563c | 234 | #endif /* _POWERPC_RTAS_H */ |