~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/powerpc/include/asm/rtas.h

Version: ~ [ linux-5.10-rc6 ] ~ [ linux-5.9.12 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.81 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.161 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.210 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.247 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.247 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 /*
 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)
 22 #define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */
 23 
 24 /* Buffer size for ppc_rtas system call. */
 25 #define RTAS_RMOBUF_MAX (64 * 1024)
 26 
 27 /* RTAS return status codes */
 28 #define RTAS_NOT_SUSPENDABLE    -9004
 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 
 48 typedef __be32 rtas_arg_t;
 49 
 50 struct rtas_args {
 51         __be32 token;
 52         __be32 nargs;
 53         __be32 nret; 
 54         rtas_arg_t args[16];
 55         rtas_arg_t *rets;     /* Pointer to return values in args[]. */
 56 };  
 57 
 58 struct rtas_t {
 59         unsigned long entry;            /* physical address pointer */
 60         unsigned long base;             /* physical address pointer */
 61         unsigned long size;
 62         arch_spinlock_t lock;
 63         struct rtas_args args;
 64         struct device_node *dev;        /* virtual address pointer */
 65 };
 66 
 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 
 75 /* RTAS event classes */
 76 #define RTAS_INTERNAL_ERROR             0x80000000 /* set bit 0 */
 77 #define RTAS_EPOW_WARNING               0x40000000 /* set bit 1 */
 78 #define RTAS_HOTPLUG_EVENTS             0x10000000 /* set bit 3 */
 79 #define RTAS_IO_EVENTS                  0x08000000 /* set bit 4 */
 80 #define RTAS_EVENT_SCAN_ALL_EVENTS      0xffffffff
 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
147 /* Platform Resource Reassignment Notification */
148 #define RTAS_TYPE_PRRN                  0xA0
149 
150 /* RTAS check-exception vector offset */
151 #define RTAS_VECTOR_EXTERNAL_INTERRUPT  0x500
152 
153 struct rtas_error_log {
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 */
175                                                 /* Variable length.      */
176 };
177 
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 
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 */
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 
222         /* Byte 1 */
223         uint8_t byte1;                  /* reserved */
224 
225         /* Byte 2 */
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 
233         /* Byte 3 */
234         uint8_t byte3;                  /* reserved */
235         /* Byte 4-11 */
236         uint8_t reserved[8];            /* reserved */
237         /* Byte 12-15 */
238         __be32  company_id;             /* Company ID of the company    */
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.             */
244 };
245 
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 
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')
277 #define PSERIES_ELOG_SECT_ID_HOTPLUG            (('H' << 8) | 'P')
278 
279 /* Vendor specific Platform Event Log Format, Version 6, section header */
280 struct pseries_errorlog {
281         __be16 id;                      /* 0x00 2-byte ASCII section ID */
282         __be16 length;                  /* 0x02 Section length in bytes */
283         uint8_t version;                /* 0x04 Section version         */
284         uint8_t subtype;                /* 0x05 Section subtype         */
285         __be16 creator_component;       /* 0x06 Creator component ID    */
286         uint8_t data[];                 /* 0x08 Start of section data   */
287 };
288 
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 
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                 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 
329 struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log,
330                                               uint16_t section_id);
331 
332 /*
333  * This can be set by the rtas_flash module so that it can get called
334  * as the absolutely last thing before the kernel terminates.
335  */
336 extern void (*rtas_flash_term_hook)(int);
337 
338 extern struct rtas_t rtas;
339 
340 extern int rtas_token(const char *service);
341 extern int rtas_service_present(const char *service);
342 extern int rtas_call(int token, int, int, int *, ...);
343 void rtas_call_unlocked(struct rtas_args *args, int token, int nargs,
344                         int nret, ...);
345 extern void __noreturn rtas_restart(char *cmd);
346 extern void rtas_power_off(void);
347 extern void __noreturn rtas_halt(void);
348 extern void rtas_os_term(char *str);
349 extern int rtas_get_sensor(int sensor, int index, int *state);
350 extern int rtas_get_sensor_fast(int sensor, int index, int *state);
351 extern int rtas_get_power_level(int powerdomain, int *level);
352 extern int rtas_set_power_level(int powerdomain, int level, int *setlevel);
353 extern bool rtas_indicator_present(int token, int *maxindex);
354 extern int rtas_set_indicator(int indicator, int index, int new_value);
355 extern int rtas_set_indicator_fast(int indicator, int index, int new_value);
356 extern void rtas_progress(char *s, unsigned short hex);
357 extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data);
358 extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data);
359 extern int rtas_online_cpus_mask(cpumask_var_t cpus);
360 extern int rtas_offline_cpus_mask(cpumask_var_t cpus);
361 extern int rtas_ibm_suspend_me(u64 handle);
362 
363 struct rtc_time;
364 extern unsigned long rtas_get_boot_time(void);
365 extern void rtas_get_rtc_time(struct rtc_time *rtc_time);
366 extern int rtas_set_rtc_time(struct rtc_time *rtc_time);
367 
368 extern unsigned int rtas_busy_delay_time(int status);
369 extern unsigned int rtas_busy_delay(int status);
370 
371 extern int early_init_dt_scan_rtas(unsigned long node,
372                 const char *uname, int depth, void *data);
373 
374 extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal);
375 
376 #ifdef CONFIG_PPC_PSERIES
377 extern time64_t last_rtas_event;
378 extern int clobbering_unread_rtas_event(void);
379 extern int pseries_devicetree_update(s32 scope);
380 extern void post_mobility_fixup(void);
381 #else
382 static inline int clobbering_unread_rtas_event(void) { return 0; }
383 #endif
384 
385 #ifdef CONFIG_PPC_RTAS_DAEMON
386 extern void rtas_cancel_event_scan(void);
387 #else
388 static inline void rtas_cancel_event_scan(void) { }
389 #endif
390 
391 /* Error types logged.  */
392 #define ERR_FLAG_ALREADY_LOGGED 0x0
393 #define ERR_FLAG_BOOT           0x1     /* log was pulled from NVRAM on boot */
394 #define ERR_TYPE_RTAS_LOG       0x2     /* from rtas event-scan */
395 #define ERR_TYPE_KERNEL_PANIC   0x4     /* from die()/panic() */
396 #define ERR_TYPE_KERNEL_PANIC_GZ 0x8    /* ditto, compressed */
397 
398 /* All the types and not flags */
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  * Return the firmware-specified size of the error log buffer
408  *  for all rtas calls that require an error buffer argument.
409  *  This includes 'check-exception' and 'rtas-last-error'.
410  */
411 extern int rtas_get_error_log_max(void);
412 
413 /* Event Scan Parameters */
414 #define EVENT_SCAN_ALL_EVENTS   0xf0000000
415 #define SURVEILLANCE_TOKEN      9000
416 #define LOG_NUMBER              64              /* must be a power of two */
417 #define LOG_NUMBER_MASK         (LOG_NUMBER-1)
418 
419 /* Some RTAS ops require a data buffer and that buffer must be < 4G.
420  * Rather than having a memory allocator, just use this buffer
421  * (get the lock first), make the RTAS call.  Copy the data instead
422  * of holding the buffer for long.
423  */
424 
425 #define RTAS_DATA_BUF_SIZE 4096
426 extern spinlock_t rtas_data_buf_lock;
427 extern char rtas_data_buf[RTAS_DATA_BUF_SIZE];
428 
429 /* RMO buffer reserved for user-space RTAS use */
430 extern unsigned long rtas_rmo_buf;
431 
432 #define GLOBAL_INTERRUPT_QUEUE 9005
433 
434 /**
435  * rtas_config_addr - Format a busno, devfn and reg for RTAS.
436  * @busno: The bus number.
437  * @devfn: The device and function number as encoded by PCI_DEVFN().
438  * @reg: The register number.
439  *
440  * This function encodes the given busno, devfn and register number as
441  * required for RTAS calls that take a "config_addr" parameter.
442  * See PAPR requirement 7.3.4-1 for more info.
443  */
444 static 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 
450 extern void rtas_give_timebase(void);
451 extern void rtas_take_timebase(void);
452 
453 #ifdef CONFIG_PPC_RTAS
454 static 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 /* Not the best place to put pSeries_coalesce_init, will be fixed when we
463  * move some of the rtas suspend-me stuff to pseries */
464 extern void pSeries_coalesce_init(void);
465 void rtas_initialize(void);
466 #else
467 static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;}
468 static inline void pSeries_coalesce_init(void) { }
469 static inline void rtas_initialize(void) { };
470 #endif
471 
472 extern int call_rtas(const char *, int, int, unsigned long *, ...);
473 
474 #endif /* __KERNEL__ */
475 #endif /* _POWERPC_RTAS_H */
476 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp