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9b6b563c PM |
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> | |
e4a9616c | 7 | #include <linux/time.h> |
9b6b563c PM |
8 | |
9 | /* | |
10 | * Definitions for talking to the RTAS on CHRP machines. | |
11 | * | |
12 | * Copyright (C) 2001 Peter Bergner | |
13 | * Copyright (C) 2001 PPC 64 Team, IBM Corp | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License | |
17 | * as published by the Free Software Foundation; either version | |
18 | * 2 of the License, or (at your option) any later version. | |
19 | */ | |
20 | ||
21 | #define RTAS_UNKNOWN_SERVICE (-1) | |
fe333321 | 22 | #define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */ |
9b6b563c PM |
23 | |
24 | /* Buffer size for ppc_rtas system call. */ | |
25 | #define RTAS_RMOBUF_MAX (64 * 1024) | |
26 | ||
27 | /* RTAS return status codes */ | |
368a6ba5 | 28 | #define RTAS_NOT_SUSPENDABLE -9004 |
9b6b563c PM |
29 | #define RTAS_BUSY -2 /* RTAS Busy */ |
30 | #define RTAS_EXTENDED_DELAY_MIN 9900 | |
31 | #define RTAS_EXTENDED_DELAY_MAX 9905 | |
32 | ||
33 | /* | |
34 | * In general to call RTAS use rtas_token("string") to lookup | |
35 | * an RTAS token for the given string (e.g. "event-scan"). | |
36 | * To actually perform the call use | |
37 | * ret = rtas_call(token, n_in, n_out, ...) | |
38 | * Where n_in is the number of input parameters and | |
39 | * n_out is the number of output parameters | |
40 | * | |
41 | * If the "string" is invalid on this system, RTAS_UNKNOWN_SERVICE | |
42 | * will be returned as a token. rtas_call() does look for this | |
43 | * token and error out gracefully so rtas_call(rtas_token("str"), ...) | |
44 | * may be safely used for one-shot calls to RTAS. | |
45 | * | |
46 | */ | |
47 | ||
27128264 | 48 | typedef __be32 rtas_arg_t; |
9b6b563c PM |
49 | |
50 | struct rtas_args { | |
27128264 AB |
51 | __be32 token; |
52 | __be32 nargs; | |
53 | __be32 nret; | |
9b6b563c PM |
54 | rtas_arg_t args[16]; |
55 | rtas_arg_t *rets; /* Pointer to return values in args[]. */ | |
56 | }; | |
57 | ||
9b6b563c PM |
58 | struct rtas_t { |
59 | unsigned long entry; /* physical address pointer */ | |
60 | unsigned long base; /* physical address pointer */ | |
61 | unsigned long size; | |
445c8951 | 62 | arch_spinlock_t lock; |
9b6b563c PM |
63 | struct rtas_args args; |
64 | struct device_node *dev; /* virtual address pointer */ | |
65 | }; | |
66 | ||
8fe93f8d BK |
67 | struct rtas_suspend_me_data { |
68 | atomic_t working; /* number of cpus accessing this struct */ | |
69 | atomic_t done; | |
70 | int token; /* ibm,suspend-me */ | |
71 | atomic_t error; | |
72 | struct completion *complete; /* wait on this until working == 0 */ | |
73 | }; | |
74 | ||
9b6b563c PM |
75 | /* RTAS event classes */ |
76 | #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ | |
77 | #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ | |
9b6b563c | 78 | #define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */ |
4a9f9506 AB |
79 | #define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */ |
80 | #define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff | |
9b6b563c PM |
81 | |
82 | /* RTAS event severity */ | |
83 | #define RTAS_SEVERITY_FATAL 0x5 | |
84 | #define RTAS_SEVERITY_ERROR 0x4 | |
85 | #define RTAS_SEVERITY_ERROR_SYNC 0x3 | |
86 | #define RTAS_SEVERITY_WARNING 0x2 | |
87 | #define RTAS_SEVERITY_EVENT 0x1 | |
88 | #define RTAS_SEVERITY_NO_ERROR 0x0 | |
89 | ||
90 | /* RTAS event disposition */ | |
91 | #define RTAS_DISP_FULLY_RECOVERED 0x0 | |
92 | #define RTAS_DISP_LIMITED_RECOVERY 0x1 | |
93 | #define RTAS_DISP_NOT_RECOVERED 0x2 | |
94 | ||
95 | /* RTAS event initiator */ | |
96 | #define RTAS_INITIATOR_UNKNOWN 0x0 | |
97 | #define RTAS_INITIATOR_CPU 0x1 | |
98 | #define RTAS_INITIATOR_PCI 0x2 | |
99 | #define RTAS_INITIATOR_ISA 0x3 | |
100 | #define RTAS_INITIATOR_MEMORY 0x4 | |
101 | #define RTAS_INITIATOR_POWERMGM 0x5 | |
102 | ||
103 | /* RTAS event target */ | |
104 | #define RTAS_TARGET_UNKNOWN 0x0 | |
105 | #define RTAS_TARGET_CPU 0x1 | |
106 | #define RTAS_TARGET_PCI 0x2 | |
107 | #define RTAS_TARGET_ISA 0x3 | |
108 | #define RTAS_TARGET_MEMORY 0x4 | |
109 | #define RTAS_TARGET_POWERMGM 0x5 | |
110 | ||
111 | /* RTAS event type */ | |
112 | #define RTAS_TYPE_RETRY 0x01 | |
113 | #define RTAS_TYPE_TCE_ERR 0x02 | |
114 | #define RTAS_TYPE_INTERN_DEV_FAIL 0x03 | |
115 | #define RTAS_TYPE_TIMEOUT 0x04 | |
116 | #define RTAS_TYPE_DATA_PARITY 0x05 | |
117 | #define RTAS_TYPE_ADDR_PARITY 0x06 | |
118 | #define RTAS_TYPE_CACHE_PARITY 0x07 | |
119 | #define RTAS_TYPE_ADDR_INVALID 0x08 | |
120 | #define RTAS_TYPE_ECC_UNCORR 0x09 | |
121 | #define RTAS_TYPE_ECC_CORR 0x0a | |
122 | #define RTAS_TYPE_EPOW 0x40 | |
123 | #define RTAS_TYPE_PLATFORM 0xE0 | |
124 | #define RTAS_TYPE_IO 0xE1 | |
125 | #define RTAS_TYPE_INFO 0xE2 | |
126 | #define RTAS_TYPE_DEALLOC 0xE3 | |
127 | #define RTAS_TYPE_DUMP 0xE4 | |
128 | /* I don't add PowerMGM events right now, this is a different topic */ | |
129 | #define RTAS_TYPE_PMGM_POWER_SW_ON 0x60 | |
130 | #define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61 | |
131 | #define RTAS_TYPE_PMGM_LID_OPEN 0x62 | |
132 | #define RTAS_TYPE_PMGM_LID_CLOSE 0x63 | |
133 | #define RTAS_TYPE_PMGM_SLEEP_BTN 0x64 | |
134 | #define RTAS_TYPE_PMGM_WAKE_BTN 0x65 | |
135 | #define RTAS_TYPE_PMGM_BATTERY_WARN 0x66 | |
136 | #define RTAS_TYPE_PMGM_BATTERY_CRIT 0x67 | |
137 | #define RTAS_TYPE_PMGM_SWITCH_TO_BAT 0x68 | |
138 | #define RTAS_TYPE_PMGM_SWITCH_TO_AC 0x69 | |
139 | #define RTAS_TYPE_PMGM_KBD_OR_MOUSE 0x6a | |
140 | #define RTAS_TYPE_PMGM_ENCLOS_OPEN 0x6b | |
141 | #define RTAS_TYPE_PMGM_ENCLOS_CLOSED 0x6c | |
142 | #define RTAS_TYPE_PMGM_RING_INDICATE 0x6d | |
143 | #define RTAS_TYPE_PMGM_LAN_ATTENTION 0x6e | |
144 | #define RTAS_TYPE_PMGM_TIME_ALARM 0x6f | |
145 | #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 | |
146 | #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 | |
49c68a85 JL |
147 | /* Platform Resource Reassignment Notification */ |
148 | #define RTAS_TYPE_PRRN 0xA0 | |
9b6b563c | 149 | |
b08e281b MN |
150 | /* RTAS check-exception vector offset */ |
151 | #define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 | |
152 | ||
9b6b563c | 153 | struct rtas_error_log { |
a08a53ea GK |
154 | /* Byte 0 */ |
155 | uint8_t byte0; /* Architectural version */ | |
156 | ||
157 | /* Byte 1 */ | |
158 | uint8_t byte1; | |
159 | /* XXXXXXXX | |
160 | * XXX 3: Severity level of error | |
161 | * XX 2: Degree of recovery | |
162 | * X 1: Extended log present? | |
163 | * XX 2: Reserved | |
164 | */ | |
165 | ||
166 | /* Byte 2 */ | |
167 | uint8_t byte2; | |
168 | /* XXXXXXXX | |
169 | * XXXX 4: Initiator of event | |
170 | * XXXX 4: Target of failed operation | |
171 | */ | |
172 | uint8_t byte3; /* General event or error*/ | |
173 | __be32 extended_log_length; /* length in bytes */ | |
174 | unsigned char buffer[1]; /* Start of extended log */ | |
4cb46380 THFL |
175 | /* Variable length. */ |
176 | }; | |
177 | ||
a08a53ea GK |
178 | static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog) |
179 | { | |
180 | return (elog->byte1 & 0xE0) >> 5; | |
181 | } | |
182 | ||
183 | static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog) | |
184 | { | |
185 | return (elog->byte1 & 0x18) >> 3; | |
186 | } | |
187 | ||
188 | static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog) | |
189 | { | |
190 | return (elog->byte1 & 0x04) >> 2; | |
191 | } | |
192 | ||
193 | #define rtas_error_type(x) ((x)->byte3) | |
194 | ||
195 | static inline | |
196 | uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog) | |
197 | { | |
198 | return be32_to_cpu(elog->extended_log_length); | |
199 | } | |
200 | ||
4cb46380 THFL |
201 | #define RTAS_V6EXT_LOG_FORMAT_EVENT_LOG 14 |
202 | ||
203 | #define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) | |
204 | ||
205 | /* RTAS general extended event log, Version 6. The extended log starts | |
206 | * from "buffer" field of struct rtas_error_log defined above. | |
207 | */ | |
208 | struct rtas_ext_event_log_v6 { | |
209 | /* Byte 0 */ | |
a08a53ea GK |
210 | uint8_t byte0; |
211 | /* XXXXXXXX | |
212 | * X 1: Log valid | |
213 | * X 1: Unrecoverable error | |
214 | * X 1: Recoverable (correctable or successfully retried) | |
215 | * X 1: Bypassed unrecoverable error (degraded operation) | |
216 | * X 1: Predictive error | |
217 | * X 1: "New" log (always 1 for data returned from RTAS) | |
218 | * X 1: Big Endian | |
219 | * X 1: Reserved | |
220 | */ | |
221 | ||
4cb46380 | 222 | /* Byte 1 */ |
a08a53ea GK |
223 | uint8_t byte1; /* reserved */ |
224 | ||
4cb46380 | 225 | /* Byte 2 */ |
a08a53ea GK |
226 | uint8_t byte2; |
227 | /* XXXXXXXX | |
228 | * X 1: Set to 1 (indicating log is in PowerPC format) | |
229 | * XXX 3: Reserved | |
230 | * XXXX 4: Log format used for bytes 12-2047 | |
231 | */ | |
232 | ||
4cb46380 | 233 | /* Byte 3 */ |
a08a53ea | 234 | uint8_t byte3; /* reserved */ |
4cb46380 THFL |
235 | /* Byte 4-11 */ |
236 | uint8_t reserved[8]; /* reserved */ | |
237 | /* Byte 12-15 */ | |
a08a53ea | 238 | __be32 company_id; /* Company ID of the company */ |
4cb46380 THFL |
239 | /* that defines the format for */ |
240 | /* the vendor specific log type */ | |
241 | /* Byte 16-end of log */ | |
242 | uint8_t vendor_log[1]; /* Start of vendor specific log */ | |
243 | /* Variable length. */ | |
9b6b563c PM |
244 | }; |
245 | ||
a08a53ea GK |
246 | static |
247 | inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log) | |
248 | { | |
249 | return ext_log->byte2 & 0x0F; | |
250 | } | |
251 | ||
252 | static | |
253 | inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log) | |
254 | { | |
255 | return be32_to_cpu(ext_log->company_id); | |
256 | } | |
257 | ||
6431f208 AB |
258 | /* pSeries event log format */ |
259 | ||
260 | /* Two bytes ASCII section IDs */ | |
261 | #define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H') | |
262 | #define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H') | |
263 | #define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S') | |
264 | #define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H') | |
265 | #define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T') | |
266 | #define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S') | |
267 | #define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H') | |
268 | #define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W') | |
269 | #define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P') | |
270 | #define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R') | |
271 | #define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M') | |
272 | #define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P') | |
273 | #define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E') | |
274 | #define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I') | |
275 | #define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H') | |
276 | #define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D') | |
366d395c | 277 | #define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P') |
6431f208 AB |
278 | |
279 | /* Vendor specific Platform Event Log Format, Version 6, section header */ | |
280 | struct pseries_errorlog { | |
a08a53ea GK |
281 | __be16 id; /* 0x00 2-byte ASCII section ID */ |
282 | __be16 length; /* 0x02 Section length in bytes */ | |
6431f208 AB |
283 | uint8_t version; /* 0x04 Section version */ |
284 | uint8_t subtype; /* 0x05 Section subtype */ | |
a08a53ea | 285 | __be16 creator_component; /* 0x06 Creator component ID */ |
6431f208 AB |
286 | uint8_t data[]; /* 0x08 Start of section data */ |
287 | }; | |
288 | ||
a08a53ea GK |
289 | static |
290 | inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect) | |
291 | { | |
292 | return be16_to_cpu(sect->id); | |
293 | } | |
294 | ||
295 | static | |
296 | inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect) | |
297 | { | |
298 | return be16_to_cpu(sect->length); | |
299 | } | |
300 | ||
366d395c NF |
301 | /* RTAS pseries hotplug errorlog section */ |
302 | struct pseries_hp_errorlog { | |
303 | u8 resource; | |
304 | u8 action; | |
305 | u8 id_type; | |
306 | u8 reserved; | |
307 | union { | |
308 | __be32 drc_index; | |
309 | __be32 drc_count; | |
310 | char drc_name[1]; | |
311 | } _drc_u; | |
312 | }; | |
313 | ||
314 | #define PSERIES_HP_ELOG_RESOURCE_CPU 1 | |
315 | #define PSERIES_HP_ELOG_RESOURCE_MEM 2 | |
316 | #define PSERIES_HP_ELOG_RESOURCE_SLOT 3 | |
317 | #define PSERIES_HP_ELOG_RESOURCE_PHB 4 | |
318 | ||
319 | #define PSERIES_HP_ELOG_ACTION_ADD 1 | |
320 | #define PSERIES_HP_ELOG_ACTION_REMOVE 2 | |
321 | ||
322 | #define PSERIES_HP_ELOG_ID_DRC_NAME 1 | |
323 | #define PSERIES_HP_ELOG_ID_DRC_INDEX 2 | |
324 | #define PSERIES_HP_ELOG_ID_DRC_COUNT 3 | |
325 | ||
6431f208 AB |
326 | struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, |
327 | uint16_t section_id); | |
328 | ||
f4fcbbe9 PM |
329 | /* |
330 | * This can be set by the rtas_flash module so that it can get called | |
331 | * as the absolutely last thing before the kernel terminates. | |
9b6b563c | 332 | */ |
f4fcbbe9 | 333 | extern void (*rtas_flash_term_hook)(int); |
9b6b563c PM |
334 | |
335 | extern struct rtas_t rtas; | |
336 | ||
9b6b563c | 337 | extern int rtas_token(const char *service); |
f2d6d2d8 | 338 | extern int rtas_service_present(const char *service); |
9b6b563c | 339 | extern int rtas_call(int token, int, int, int *, ...); |
209eb4e5 ME |
340 | void rtas_call_unlocked(struct rtas_args *args, int token, int nargs, |
341 | int nret, ...); | |
9b6b563c PM |
342 | extern void rtas_restart(char *cmd); |
343 | extern void rtas_power_off(void); | |
344 | extern void rtas_halt(void); | |
8f515061 | 345 | extern void rtas_os_term(char *str); |
9b6b563c | 346 | extern int rtas_get_sensor(int sensor, int index, int *state); |
1c2cb594 | 347 | extern int rtas_get_sensor_fast(int sensor, int index, int *state); |
9b6b563c PM |
348 | extern int rtas_get_power_level(int powerdomain, int *level); |
349 | extern int rtas_set_power_level(int powerdomain, int level, int *setlevel); | |
edc72ac4 | 350 | extern bool rtas_indicator_present(int token, int *maxindex); |
9b6b563c | 351 | extern int rtas_set_indicator(int indicator, int index, int new_value); |
81b73dd9 | 352 | extern int rtas_set_indicator_fast(int indicator, int index, int new_value); |
9b6b563c PM |
353 | extern void rtas_progress(char *s, unsigned short hex); |
354 | extern void rtas_initialize(void); | |
8fe93f8d BK |
355 | extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); |
356 | extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); | |
120496ac RJ |
357 | extern int rtas_online_cpus_mask(cpumask_var_t cpus); |
358 | extern int rtas_offline_cpus_mask(cpumask_var_t cpus); | |
c03e7374 | 359 | extern int rtas_ibm_suspend_me(u64 handle); |
9b6b563c PM |
360 | |
361 | struct rtc_time; | |
143a1dec | 362 | extern unsigned long rtas_get_boot_time(void); |
9b6b563c PM |
363 | extern void rtas_get_rtc_time(struct rtc_time *rtc_time); |
364 | extern int rtas_set_rtc_time(struct rtc_time *rtc_time); | |
365 | ||
507279db JR |
366 | extern unsigned int rtas_busy_delay_time(int status); |
367 | extern unsigned int rtas_busy_delay(int status); | |
9b6b563c | 368 | |
458148c0 ME |
369 | extern int early_init_dt_scan_rtas(unsigned long node, |
370 | const char *uname, int depth, void *data); | |
371 | ||
9b6b563c PM |
372 | extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal); |
373 | ||
762ec157 | 374 | #ifdef CONFIG_PPC_PSERIES |
e4a9616c | 375 | extern time64_t last_rtas_event; |
78989f0a | 376 | extern int clobbering_unread_rtas_event(void); |
762ec157 | 377 | extern int pseries_devicetree_update(s32 scope); |
6b36ba84 | 378 | extern void post_mobility_fixup(void); |
78989f0a HB |
379 | #else |
380 | static inline int clobbering_unread_rtas_event(void) { return 0; } | |
762ec157 NF |
381 | #endif |
382 | ||
df17f56d RN |
383 | #ifdef CONFIG_PPC_RTAS_DAEMON |
384 | extern void rtas_cancel_event_scan(void); | |
385 | #else | |
386 | static inline void rtas_cancel_event_scan(void) { } | |
387 | #endif | |
388 | ||
9b6b563c PM |
389 | /* Error types logged. */ |
390 | #define ERR_FLAG_ALREADY_LOGGED 0x0 | |
391 | #define ERR_FLAG_BOOT 0x1 /* log was pulled from NVRAM on boot */ | |
392 | #define ERR_TYPE_RTAS_LOG 0x2 /* from rtas event-scan */ | |
6c493685 JK |
393 | #define ERR_TYPE_KERNEL_PANIC 0x4 /* from die()/panic() */ |
394 | #define ERR_TYPE_KERNEL_PANIC_GZ 0x8 /* ditto, compressed */ | |
9b6b563c PM |
395 | |
396 | /* All the types and not flags */ | |
6c493685 JK |
397 | #define ERR_TYPE_MASK \ |
398 | (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ) | |
9b6b563c PM |
399 | |
400 | #define RTAS_DEBUG KERN_DEBUG "RTAS: " | |
401 | ||
402 | #define RTAS_ERROR_LOG_MAX 2048 | |
403 | ||
404 | /* | |
405 | * Return the firmware-specified size of the error log buffer | |
406 | * for all rtas calls that require an error buffer argument. | |
407 | * This includes 'check-exception' and 'rtas-last-error'. | |
408 | */ | |
409 | extern int rtas_get_error_log_max(void); | |
410 | ||
411 | /* Event Scan Parameters */ | |
412 | #define EVENT_SCAN_ALL_EVENTS 0xf0000000 | |
413 | #define SURVEILLANCE_TOKEN 9000 | |
414 | #define LOG_NUMBER 64 /* must be a power of two */ | |
415 | #define LOG_NUMBER_MASK (LOG_NUMBER-1) | |
416 | ||
417 | /* Some RTAS ops require a data buffer and that buffer must be < 4G. | |
418 | * Rather than having a memory allocator, just use this buffer | |
419 | * (get the lock first), make the RTAS call. Copy the data instead | |
420 | * of holding the buffer for long. | |
421 | */ | |
422 | ||
423 | #define RTAS_DATA_BUF_SIZE 4096 | |
424 | extern spinlock_t rtas_data_buf_lock; | |
425 | extern char rtas_data_buf[RTAS_DATA_BUF_SIZE]; | |
426 | ||
9b6b563c PM |
427 | /* RMO buffer reserved for user-space RTAS use */ |
428 | extern unsigned long rtas_rmo_buf; | |
429 | ||
430 | #define GLOBAL_INTERRUPT_QUEUE 9005 | |
431 | ||
6f3d5d3c ME |
432 | /** |
433 | * rtas_config_addr - Format a busno, devfn and reg for RTAS. | |
434 | * @busno: The bus number. | |
435 | * @devfn: The device and function number as encoded by PCI_DEVFN(). | |
436 | * @reg: The register number. | |
437 | * | |
438 | * This function encodes the given busno, devfn and register number as | |
439 | * required for RTAS calls that take a "config_addr" parameter. | |
440 | * See PAPR requirement 7.3.4-1 for more info. | |
441 | */ | |
442 | static inline u32 rtas_config_addr(int busno, int devfn, int reg) | |
443 | { | |
444 | return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | | |
445 | (devfn << 8) | (reg & 0xff); | |
446 | } | |
447 | ||
061d19f2 PG |
448 | extern void rtas_give_timebase(void); |
449 | extern void rtas_take_timebase(void); | |
c4007a2f | 450 | |
8a3e3d31 | 451 | #ifdef CONFIG_PPC_RTAS |
452 | static inline int page_is_rtas_user_buf(unsigned long pfn) | |
453 | { | |
454 | unsigned long paddr = (pfn << PAGE_SHIFT); | |
455 | if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX)) | |
456 | return 1; | |
457 | return 0; | |
458 | } | |
f459d63e NF |
459 | |
460 | /* Not the best place to put pSeries_coalesce_init, will be fixed when we | |
461 | * move some of the rtas suspend-me stuff to pseries */ | |
462 | extern void pSeries_coalesce_init(void); | |
8a3e3d31 | 463 | #else |
464 | static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;} | |
f459d63e | 465 | static inline void pSeries_coalesce_init(void) { } |
8a3e3d31 | 466 | #endif |
467 | ||
ae3a197e DH |
468 | extern int call_rtas(const char *, int, int, unsigned long *, ...); |
469 | ||
88ced031 | 470 | #endif /* __KERNEL__ */ |
9b6b563c | 471 | #endif /* _POWERPC_RTAS_H */ |