1#ifndef _POWERPC_RTAS_H
2#define _POWERPC_RTAS_H
3#ifdef __KERNEL__
4
5#include <linux/spinlock.h>
6#include <asm/page.h>
7#include <linux/time.h>
8
9
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11
12
13
14
15
16
17
18
19
20
21#define RTAS_UNKNOWN_SERVICE (-1)
22#define RTAS_INSTANTIATE_MAX (1ULL<<30)
23
24
25#define RTAS_RMOBUF_MAX (64 * 1024)
26
27
28#define RTAS_NOT_SUSPENDABLE -9004
29#define RTAS_BUSY -2
30#define RTAS_EXTENDED_DELAY_MIN 9900
31#define RTAS_EXTENDED_DELAY_MAX 9905
32
33
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38
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44
45
46
47
48typedef __be32 rtas_arg_t;
49
50struct rtas_args {
51 __be32 token;
52 __be32 nargs;
53 __be32 nret;
54 rtas_arg_t args[16];
55 rtas_arg_t *rets;
56};
57
58struct rtas_t {
59 unsigned long entry;
60 unsigned long base;
61 unsigned long size;
62 arch_spinlock_t lock;
63 struct rtas_args args;
64 struct device_node *dev;
65};
66
67struct rtas_suspend_me_data {
68 atomic_t working;
69 atomic_t done;
70 int token;
71 atomic_t error;
72 struct completion *complete;
73};
74
75
76#define RTAS_INTERNAL_ERROR 0x80000000
77#define RTAS_EPOW_WARNING 0x40000000
78#define RTAS_HOTPLUG_EVENTS 0x10000000
79#define RTAS_IO_EVENTS 0x08000000
80#define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff
81
82
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
91#define RTAS_DISP_FULLY_RECOVERED 0x0
92#define RTAS_DISP_LIMITED_RECOVERY 0x1
93#define RTAS_DISP_NOT_RECOVERED 0x2
94
95
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
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
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
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
147
148#define RTAS_TYPE_PRRN 0xA0
149
150
151#define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500
152
153struct rtas_error_log {
154
155 uint8_t byte0;
156
157
158 uint8_t byte1;
159
160
161
162
163
164
165
166
167 uint8_t byte2;
168
169
170
171
172 uint8_t byte3;
173 __be32 extended_log_length;
174 unsigned char buffer[1];
175
176};
177
178static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog)
179{
180 return (elog->byte1 & 0xE0) >> 5;
181}
182
183static inline uint8_t rtas_error_disposition(const struct rtas_error_log *elog)
184{
185 return (elog->byte1 & 0x18) >> 3;
186}
187
188static 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
195static inline
196uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog)
197{
198 return be32_to_cpu(elog->extended_log_length);
199}
200
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
206
207
208struct rtas_ext_event_log_v6 {
209
210 uint8_t byte0;
211
212
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217
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220
221
222
223 uint8_t byte1;
224
225
226 uint8_t byte2;
227
228
229
230
231
232
233
234 uint8_t byte3;
235
236 uint8_t reserved[8];
237
238 __be32 company_id;
239
240
241
242 uint8_t vendor_log[1];
243
244};
245
246static
247inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log)
248{
249 return ext_log->byte2 & 0x0F;
250}
251
252static
253inline 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
258
259
260
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')
277#define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P')
278
279
280struct pseries_errorlog {
281 __be16 id;
282 __be16 length;
283 uint8_t version;
284 uint8_t subtype;
285 __be16 creator_component;
286 uint8_t data[];
287};
288
289static
290inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect)
291{
292 return be16_to_cpu(sect->id);
293}
294
295static
296inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect)
297{
298 return be16_to_cpu(sect->length);
299}
300
301
302struct 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 struct { __be32 count, index; } ic;
311 char drc_name[1];
312 } _drc_u;
313};
314
315#define PSERIES_HP_ELOG_RESOURCE_CPU 1
316#define PSERIES_HP_ELOG_RESOURCE_MEM 2
317#define PSERIES_HP_ELOG_RESOURCE_SLOT 3
318#define PSERIES_HP_ELOG_RESOURCE_PHB 4
319
320#define PSERIES_HP_ELOG_ACTION_ADD 1
321#define PSERIES_HP_ELOG_ACTION_REMOVE 2
322#define PSERIES_HP_ELOG_ACTION_READD 3
323
324#define PSERIES_HP_ELOG_ID_DRC_NAME 1
325#define PSERIES_HP_ELOG_ID_DRC_INDEX 2
326#define PSERIES_HP_ELOG_ID_DRC_COUNT 3
327#define PSERIES_HP_ELOG_ID_DRC_IC 4
328
329struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log,
330 uint16_t section_id);
331
332
333
334
335
336extern void (*rtas_flash_term_hook)(int);
337
338extern struct rtas_t rtas;
339
340extern int rtas_token(const char *service);
341extern int rtas_service_present(const char *service);
342extern int rtas_call(int token, int, int, int *, ...);
343void rtas_call_unlocked(struct rtas_args *args, int token, int nargs,
344 int nret, ...);
345extern void __noreturn rtas_restart(char *cmd);
346extern void rtas_power_off(void);
347extern void __noreturn rtas_halt(void);
348extern void rtas_os_term(char *str);
349extern int rtas_get_sensor(int sensor, int index, int *state);
350extern int rtas_get_sensor_fast(int sensor, int index, int *state);
351extern int rtas_get_power_level(int powerdomain, int *level);
352extern int rtas_set_power_level(int powerdomain, int level, int *setlevel);
353extern bool rtas_indicator_present(int token, int *maxindex);
354extern int rtas_set_indicator(int indicator, int index, int new_value);
355extern int rtas_set_indicator_fast(int indicator, int index, int new_value);
356extern void rtas_progress(char *s, unsigned short hex);
357extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data);
358extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data);
359extern int rtas_online_cpus_mask(cpumask_var_t cpus);
360extern int rtas_offline_cpus_mask(cpumask_var_t cpus);
361extern int rtas_ibm_suspend_me(u64 handle);
362
363struct rtc_time;
364extern unsigned long rtas_get_boot_time(void);
365extern void rtas_get_rtc_time(struct rtc_time *rtc_time);
366extern int rtas_set_rtc_time(struct rtc_time *rtc_time);
367
368extern unsigned int rtas_busy_delay_time(int status);
369extern unsigned int rtas_busy_delay(int status);
370
371extern int early_init_dt_scan_rtas(unsigned long node,
372 const char *uname, int depth, void *data);
373
374extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal);
375
376#ifdef CONFIG_PPC_PSERIES
377extern time64_t last_rtas_event;
378extern int clobbering_unread_rtas_event(void);
379extern int pseries_devicetree_update(s32 scope);
380extern void post_mobility_fixup(void);
381#else
382static inline int clobbering_unread_rtas_event(void) { return 0; }
383#endif
384
385#ifdef CONFIG_PPC_RTAS_DAEMON
386extern void rtas_cancel_event_scan(void);
387#else
388static inline void rtas_cancel_event_scan(void) { }
389#endif
390
391
392#define ERR_FLAG_ALREADY_LOGGED 0x0
393#define ERR_FLAG_BOOT 0x1
394#define ERR_TYPE_RTAS_LOG 0x2
395#define ERR_TYPE_KERNEL_PANIC 0x4
396#define ERR_TYPE_KERNEL_PANIC_GZ 0x8
397
398
399#define ERR_TYPE_MASK \
400 (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC | ERR_TYPE_KERNEL_PANIC_GZ)
401
402#define RTAS_DEBUG KERN_DEBUG "RTAS: "
403
404#define RTAS_ERROR_LOG_MAX 2048
405
406
407
408
409
410
411extern int rtas_get_error_log_max(void);
412
413
414#define EVENT_SCAN_ALL_EVENTS 0xf0000000
415#define SURVEILLANCE_TOKEN 9000
416#define LOG_NUMBER 64
417#define LOG_NUMBER_MASK (LOG_NUMBER-1)
418
419
420
421
422
423
424
425#define RTAS_DATA_BUF_SIZE 4096
426extern spinlock_t rtas_data_buf_lock;
427extern char rtas_data_buf[RTAS_DATA_BUF_SIZE];
428
429
430extern unsigned long rtas_rmo_buf;
431
432#define GLOBAL_INTERRUPT_QUEUE 9005
433
434
435
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441
442
443
444static inline u32 rtas_config_addr(int busno, int devfn, int reg)
445{
446 return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) |
447 (devfn << 8) | (reg & 0xff);
448}
449
450extern void rtas_give_timebase(void);
451extern void rtas_take_timebase(void);
452
453#ifdef CONFIG_PPC_RTAS
454static inline int page_is_rtas_user_buf(unsigned long pfn)
455{
456 unsigned long paddr = (pfn << PAGE_SHIFT);
457 if (paddr >= rtas_rmo_buf && paddr < (rtas_rmo_buf + RTAS_RMOBUF_MAX))
458 return 1;
459 return 0;
460}
461
462
463
464extern void pSeries_coalesce_init(void);
465void rtas_initialize(void);
466#else
467static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;}
468static inline void pSeries_coalesce_init(void) { }
469static inline void rtas_initialize(void) { };
470#endif
471
472extern int call_rtas(const char *, int, int, unsigned long *, ...);
473
474#endif
475#endif
476