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[PATCH] powerpc/pseries: Change H_StudlyCaps to H_SHOUTING_CAPS
[linux-2.6/linux-2.6-openrd.git] / arch / powerpc / kernel / rtas.c
blob0112318213ab5aada8c00e5ec6877c801501ccd3
1 /*
2 *
3 * Procedures for interfacing to the RTAS on CHRP machines.
4 *
5 * Peter Bergner, IBM March 2001.
6 * Copyright (C) 2001 IBM.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13
14 #include <stdarg.h>
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/spinlock.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/capability.h>
21 #include <linux/delay.h>
22
23 #include <asm/prom.h>
24 #include <asm/rtas.h>
25 #include <asm/hvcall.h>
26 #include <asm/semaphore.h>
27 #include <asm/machdep.h>
28 #include <asm/firmware.h>
29 #include <asm/page.h>
30 #include <asm/param.h>
31 #include <asm/system.h>
32 #include <asm/delay.h>
33 #include <asm/uaccess.h>
34 #include <asm/lmb.h>
35 #include <asm/udbg.h>
36 #include <asm/syscalls.h>
37
38 struct rtas_t rtas = {
39 .lock = SPIN_LOCK_UNLOCKED
40 };
41
42 struct rtas_suspend_me_data {
43 long waiting;
44 struct rtas_args *args;
45 };
46
47 EXPORT_SYMBOL(rtas);
48
49 DEFINE_SPINLOCK(rtas_data_buf_lock);
50 char rtas_data_buf[RTAS_DATA_BUF_SIZE] __cacheline_aligned;
51 unsigned long rtas_rmo_buf;
52
53 /*
54 * If non-NULL, this gets called when the kernel terminates.
55 * This is done like this so rtas_flash can be a module.
56 */
57 void (*rtas_flash_term_hook)(int);
58 EXPORT_SYMBOL(rtas_flash_term_hook);
59
60 /*
61 * call_rtas_display_status and call_rtas_display_status_delay
62 * are designed only for very early low-level debugging, which
63 * is why the token is hard-coded to 10.
64 */
65 static void call_rtas_display_status(char c)
66 {
67 struct rtas_args *args = &rtas.args;
68 unsigned long s;
69
70 if (!rtas.base)
71 return;
72 spin_lock_irqsave(&rtas.lock, s);
73
74 args->token = 10;
75 args->nargs = 1;
76 args->nret = 1;
77 args->rets = (rtas_arg_t *)&(args->args[1]);
78 args->args[0] = (unsigned char)c;
79
80 enter_rtas(__pa(args));
81
82 spin_unlock_irqrestore(&rtas.lock, s);
83 }
84
85 static void call_rtas_display_status_delay(char c)
86 {
87 static int pending_newline = 0; /* did last write end with unprinted newline? */
88 static int width = 16;
89
90 if (c == '\n') {
91 while (width-- > 0)
92 call_rtas_display_status(' ');
93 width = 16;
94 mdelay(500);
95 pending_newline = 1;
96 } else {
97 if (pending_newline) {
98 call_rtas_display_status('\r');
99 call_rtas_display_status('\n');
100 }
101 pending_newline = 0;
102 if (width--) {
103 call_rtas_display_status(c);
104 udelay(10000);
105 }
106 }
107 }
108
109 void __init udbg_init_rtas(void)
110 {
111 udbg_putc = call_rtas_display_status_delay;
112 }
113
114 void rtas_progress(char *s, unsigned short hex)
115 {
116 struct device_node *root;
117 int width, *p;
118 char *os;
119 static int display_character, set_indicator;
120 static int display_width, display_lines, *row_width, form_feed;
121 static DEFINE_SPINLOCK(progress_lock);
122 static int current_line;
123 static int pending_newline = 0; /* did last write end with unprinted newline? */
124
125 if (!rtas.base)
126 return;
127
128 if (display_width == 0) {
129 display_width = 0x10;
130 if ((root = find_path_device("/rtas"))) {
131 if ((p = (unsigned int *)get_property(root,
132 "ibm,display-line-length", NULL)))
133 display_width = *p;
134 if ((p = (unsigned int *)get_property(root,
135 "ibm,form-feed", NULL)))
136 form_feed = *p;
137 if ((p = (unsigned int *)get_property(root,
138 "ibm,display-number-of-lines", NULL)))
139 display_lines = *p;
140 row_width = (unsigned int *)get_property(root,
141 "ibm,display-truncation-length", NULL);
142 }
143 display_character = rtas_token("display-character");
144 set_indicator = rtas_token("set-indicator");
145 }
146
147 if (display_character == RTAS_UNKNOWN_SERVICE) {
148 /* use hex display if available */
149 if (set_indicator != RTAS_UNKNOWN_SERVICE)
150 rtas_call(set_indicator, 3, 1, NULL, 6, 0, hex);
151 return;
152 }
153
154 spin_lock(&progress_lock);
155
156 /*
157 * Last write ended with newline, but we didn't print it since
158 * it would just clear the bottom line of output. Print it now
159 * instead.
160 *
161 * If no newline is pending and form feed is supported, clear the
162 * display with a form feed; otherwise, print a CR to start output
163 * at the beginning of the line.
164 */
165 if (pending_newline) {
166 rtas_call(display_character, 1, 1, NULL, '\r');
167 rtas_call(display_character, 1, 1, NULL, '\n');
168 pending_newline = 0;
169 } else {
170 current_line = 0;
171 if (form_feed)
172 rtas_call(display_character, 1, 1, NULL,
173 (char)form_feed);
174 else
175 rtas_call(display_character, 1, 1, NULL, '\r');
176 }
177
178 if (row_width)
179 width = row_width[current_line];
180 else
181 width = display_width;
182 os = s;
183 while (*os) {
184 if (*os == '\n' || *os == '\r') {
185 /* If newline is the last character, save it
186 * until next call to avoid bumping up the
187 * display output.
188 */
189 if (*os == '\n' && !os[1]) {
190 pending_newline = 1;
191 current_line++;
192 if (current_line > display_lines-1)
193 current_line = display_lines-1;
194 spin_unlock(&progress_lock);
195 return;
196 }
197
198 /* RTAS wants CR-LF, not just LF */
199
200 if (*os == '\n') {
201 rtas_call(display_character, 1, 1, NULL, '\r');
202 rtas_call(display_character, 1, 1, NULL, '\n');
203 } else {
204 /* CR might be used to re-draw a line, so we'll
205 * leave it alone and not add LF.
206 */
207 rtas_call(display_character, 1, 1, NULL, *os);
208 }
209
210 if (row_width)
211 width = row_width[current_line];
212 else
213 width = display_width;
214 } else {
215 width--;
216 rtas_call(display_character, 1, 1, NULL, *os);
217 }
218
219 os++;
220
221 /* if we overwrite the screen length */
222 if (width <= 0)
223 while ((*os != 0) && (*os != '\n') && (*os != '\r'))
224 os++;
225 }
226
227 spin_unlock(&progress_lock);
228 }
229 EXPORT_SYMBOL(rtas_progress); /* needed by rtas_flash module */
230
231 int rtas_token(const char *service)
232 {
233 int *tokp;
234 if (rtas.dev == NULL)
235 return RTAS_UNKNOWN_SERVICE;
236 tokp = (int *) get_property(rtas.dev, service, NULL);
237 return tokp ? *tokp : RTAS_UNKNOWN_SERVICE;
238 }
239
240 #ifdef CONFIG_RTAS_ERROR_LOGGING
241 /*
242 * Return the firmware-specified size of the error log buffer
243 * for all rtas calls that require an error buffer argument.
244 * This includes 'check-exception' and 'rtas-last-error'.
245 */
246 int rtas_get_error_log_max(void)
247 {
248 static int rtas_error_log_max;
249 if (rtas_error_log_max)
250 return rtas_error_log_max;
251
252 rtas_error_log_max = rtas_token ("rtas-error-log-max");
253 if ((rtas_error_log_max == RTAS_UNKNOWN_SERVICE) ||
254 (rtas_error_log_max > RTAS_ERROR_LOG_MAX)) {
255 printk (KERN_WARNING "RTAS: bad log buffer size %d\n",
256 rtas_error_log_max);
257 rtas_error_log_max = RTAS_ERROR_LOG_MAX;
258 }
259 return rtas_error_log_max;
260 }
261 EXPORT_SYMBOL(rtas_get_error_log_max);
262
263
264 char rtas_err_buf[RTAS_ERROR_LOG_MAX];
265 int rtas_last_error_token;
266
267 /** Return a copy of the detailed error text associated with the
268 * most recent failed call to rtas. Because the error text
269 * might go stale if there are any other intervening rtas calls,
270 * this routine must be called atomically with whatever produced
271 * the error (i.e. with rtas.lock still held from the previous call).
272 */
273 static char *__fetch_rtas_last_error(char *altbuf)
274 {
275 struct rtas_args err_args, save_args;
276 u32 bufsz;
277 char *buf = NULL;
278
279 if (rtas_last_error_token == -1)
280 return NULL;
281
282 bufsz = rtas_get_error_log_max();
283
284 err_args.token = rtas_last_error_token;
285 err_args.nargs = 2;
286 err_args.nret = 1;
287 err_args.args[0] = (rtas_arg_t)__pa(rtas_err_buf);
288 err_args.args[1] = bufsz;
289 err_args.args[2] = 0;
290
291 save_args = rtas.args;
292 rtas.args = err_args;
293
294 enter_rtas(__pa(&rtas.args));
295
296 err_args = rtas.args;
297 rtas.args = save_args;
298
299 /* Log the error in the unlikely case that there was one. */
300 if (unlikely(err_args.args[2] == 0)) {
301 if (altbuf) {
302 buf = altbuf;
303 } else {
304 buf = rtas_err_buf;
305 if (mem_init_done)
306 buf = kmalloc(RTAS_ERROR_LOG_MAX, GFP_ATOMIC);
307 }
308 if (buf)
309 memcpy(buf, rtas_err_buf, RTAS_ERROR_LOG_MAX);
310 }
311
312 return buf;
313 }
314
315 #define get_errorlog_buffer() kmalloc(RTAS_ERROR_LOG_MAX, GFP_KERNEL)
316
317 #else /* CONFIG_RTAS_ERROR_LOGGING */
318 #define __fetch_rtas_last_error(x) NULL
319 #define get_errorlog_buffer() NULL
320 #endif
321
322 int rtas_call(int token, int nargs, int nret, int *outputs, ...)
323 {
324 va_list list;
325 int i;
326 unsigned long s;
327 struct rtas_args *rtas_args;
328 char *buff_copy = NULL;
329 int ret;
330
331 if (token == RTAS_UNKNOWN_SERVICE)
332 return -1;
333
334 /* Gotta do something different here, use global lock for now... */
335 spin_lock_irqsave(&rtas.lock, s);
336 rtas_args = &rtas.args;
337
338 rtas_args->token = token;
339 rtas_args->nargs = nargs;
340 rtas_args->nret = nret;
341 rtas_args->rets = (rtas_arg_t *)&(rtas_args->args[nargs]);
342 va_start(list, outputs);
343 for (i = 0; i < nargs; ++i)
344 rtas_args->args[i] = va_arg(list, rtas_arg_t);
345 va_end(list);
346
347 for (i = 0; i < nret; ++i)
348 rtas_args->rets[i] = 0;
349
350 enter_rtas(__pa(rtas_args));
351
352 /* A -1 return code indicates that the last command couldn't
353 be completed due to a hardware error. */
354 if (rtas_args->rets[0] == -1)
355 buff_copy = __fetch_rtas_last_error(NULL);
356
357 if (nret > 1 && outputs != NULL)
358 for (i = 0; i < nret-1; ++i)
359 outputs[i] = rtas_args->rets[i+1];
360 ret = (nret > 0)? rtas_args->rets[0]: 0;
361
362 /* Gotta do something different here, use global lock for now... */
363 spin_unlock_irqrestore(&rtas.lock, s);
364
365 if (buff_copy) {
366 log_error(buff_copy, ERR_TYPE_RTAS_LOG, 0);
367 if (mem_init_done)
368 kfree(buff_copy);
369 }
370 return ret;
371 }
372
373 /* Given an RTAS status code of 990n compute the hinted delay of 10^n
374 * (last digit) milliseconds. For now we bound at n=5 (100 sec).
375 */
376 unsigned int rtas_extended_busy_delay_time(int status)
377 {
378 int order = status - 9900;
379 unsigned long ms;
380
381 if (order < 0)
382 order = 0; /* RTC depends on this for -2 clock busy */
383 else if (order > 5)
384 order = 5; /* bound */
385
386 /* Use microseconds for reasonable accuracy */
387 for (ms = 1; order > 0; order--)
388 ms *= 10;
389
390 return ms;
391 }
392
393 int rtas_error_rc(int rtas_rc)
394 {
395 int rc;
396
397 switch (rtas_rc) {
398 case -1: /* Hardware Error */
399 rc = -EIO;
400 break;
401 case -3: /* Bad indicator/domain/etc */
402 rc = -EINVAL;
403 break;
404 case -9000: /* Isolation error */
405 rc = -EFAULT;
406 break;
407 case -9001: /* Outstanding TCE/PTE */
408 rc = -EEXIST;
409 break;
410 case -9002: /* No usable slot */
411 rc = -ENODEV;
412 break;
413 default:
414 printk(KERN_ERR "%s: unexpected RTAS error %d\n",
415 __FUNCTION__, rtas_rc);
416 rc = -ERANGE;
417 break;
418 }
419 return rc;
420 }
421
422 int rtas_get_power_level(int powerdomain, int *level)
423 {
424 int token = rtas_token("get-power-level");
425 int rc;
426
427 if (token == RTAS_UNKNOWN_SERVICE)
428 return -ENOENT;
429
430 while ((rc = rtas_call(token, 1, 2, level, powerdomain)) == RTAS_BUSY)
431 udelay(1);
432
433 if (rc < 0)
434 return rtas_error_rc(rc);
435 return rc;
436 }
437
438 int rtas_set_power_level(int powerdomain, int level, int *setlevel)
439 {
440 int token = rtas_token("set-power-level");
441 unsigned int wait_time;
442 int rc;
443
444 if (token == RTAS_UNKNOWN_SERVICE)
445 return -ENOENT;
446
447 while (1) {
448 rc = rtas_call(token, 2, 2, setlevel, powerdomain, level);
449 if (rc == RTAS_BUSY)
450 udelay(1);
451 else if (rtas_is_extended_busy(rc)) {
452 wait_time = rtas_extended_busy_delay_time(rc);
453 udelay(wait_time * 1000);
454 } else
455 break;
456 }
457
458 if (rc < 0)
459 return rtas_error_rc(rc);
460 return rc;
461 }
462
463 int rtas_get_sensor(int sensor, int index, int *state)
464 {
465 int token = rtas_token("get-sensor-state");
466 unsigned int wait_time;
467 int rc;
468
469 if (token == RTAS_UNKNOWN_SERVICE)
470 return -ENOENT;
471
472 while (1) {
473 rc = rtas_call(token, 2, 2, state, sensor, index);
474 if (rc == RTAS_BUSY)
475 udelay(1);
476 else if (rtas_is_extended_busy(rc)) {
477 wait_time = rtas_extended_busy_delay_time(rc);
478 udelay(wait_time * 1000);
479 } else
480 break;
481 }
482
483 if (rc < 0)
484 return rtas_error_rc(rc);
485 return rc;
486 }
487
488 int rtas_set_indicator(int indicator, int index, int new_value)
489 {
490 int token = rtas_token("set-indicator");
491 unsigned int wait_time;
492 int rc;
493
494 if (token == RTAS_UNKNOWN_SERVICE)
495 return -ENOENT;
496
497 while (1) {
498 rc = rtas_call(token, 3, 1, NULL, indicator, index, new_value);
499 if (rc == RTAS_BUSY)
500 udelay(1);
501 else if (rtas_is_extended_busy(rc)) {
502 wait_time = rtas_extended_busy_delay_time(rc);
503 udelay(wait_time * 1000);
504 }
505 else
506 break;
507 }
508
509 if (rc < 0)
510 return rtas_error_rc(rc);
511 return rc;
512 }
513
514 void rtas_restart(char *cmd)
515 {
516 if (rtas_flash_term_hook)
517 rtas_flash_term_hook(SYS_RESTART);
518 printk("RTAS system-reboot returned %d\n",
519 rtas_call(rtas_token("system-reboot"), 0, 1, NULL));
520 for (;;);
521 }
522
523 void rtas_power_off(void)
524 {
525 if (rtas_flash_term_hook)
526 rtas_flash_term_hook(SYS_POWER_OFF);
527 /* allow power on only with power button press */
528 printk("RTAS power-off returned %d\n",
529 rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1));
530 for (;;);
531 }
532
533 void rtas_halt(void)
534 {
535 if (rtas_flash_term_hook)
536 rtas_flash_term_hook(SYS_HALT);
537 /* allow power on only with power button press */
538 printk("RTAS power-off returned %d\n",
539 rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1));
540 for (;;);
541 }
542
543 /* Must be in the RMO region, so we place it here */
544 static char rtas_os_term_buf[2048];
545
546 void rtas_os_term(char *str)
547 {
548 int status;
549
550 if (RTAS_UNKNOWN_SERVICE == rtas_token("ibm,os-term"))
551 return;
552
553 snprintf(rtas_os_term_buf, 2048, "OS panic: %s", str);
554
555 do {
556 status = rtas_call(rtas_token("ibm,os-term"), 1, 1, NULL,
557 __pa(rtas_os_term_buf));
558
559 if (status == RTAS_BUSY)
560 udelay(1);
561 else if (status != 0)
562 printk(KERN_EMERG "ibm,os-term call failed %d\n",
563 status);
564 } while (status == RTAS_BUSY);
565 }
566
567 static int ibm_suspend_me_token = RTAS_UNKNOWN_SERVICE;
568 #ifdef CONFIG_PPC_PSERIES
569 static void rtas_percpu_suspend_me(void *info)
570 {
571 int i;
572 long rc;
573 long flags;
574 struct rtas_suspend_me_data *data =
575 (struct rtas_suspend_me_data *)info;
576
577 /*
578 * We use "waiting" to indicate our state. As long
579 * as it is >0, we are still trying to all join up.
580 * If it goes to 0, we have successfully joined up and
581 * one thread got H_CONTINUE. If any error happens,
582 * we set it to <0.
583 */
584 local_irq_save(flags);
585 do {
586 rc = plpar_hcall_norets(H_JOIN);
587 smp_rmb();
588 } while (rc == H_SUCCESS && data->waiting > 0);
589 if (rc == H_SUCCESS)
590 goto out;
591
592 if (rc == H_CONTINUE) {
593 data->waiting = 0;
594 data->args->args[data->args->nargs] =
595 rtas_call(ibm_suspend_me_token, 0, 1, NULL);
596 for_each_possible_cpu(i)
597 plpar_hcall_norets(H_PROD,i);
598 } else {
599 data->waiting = -EBUSY;
600 printk(KERN_ERR "Error on H_JOIN hypervisor call\n");
601 }
602
603 out:
604 local_irq_restore(flags);
605 return;
606 }
607
608 static int rtas_ibm_suspend_me(struct rtas_args *args)
609 {
610 int i;
611
612 struct rtas_suspend_me_data data;
613
614 data.waiting = 1;
615 data.args = args;
616
617 /* Call function on all CPUs. One of us will make the
618 * rtas call
619 */
620 if (on_each_cpu(rtas_percpu_suspend_me, &data, 1, 0))
621 data.waiting = -EINVAL;
622
623 if (data.waiting != 0)
624 printk(KERN_ERR "Error doing global join\n");
625
626 /* Prod each CPU. This won't hurt, and will wake
627 * anyone we successfully put to sleep with H_JOIN.
628 */
629 for_each_possible_cpu(i)
630 plpar_hcall_norets(H_PROD, i);
631
632 return data.waiting;
633 }
634 #else /* CONFIG_PPC_PSERIES */
635 static int rtas_ibm_suspend_me(struct rtas_args *args)
636 {
637 return -ENOSYS;
638 }
639 #endif
640
641 asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
642 {
643 struct rtas_args args;
644 unsigned long flags;
645 char *buff_copy, *errbuf = NULL;
646 int nargs;
647 int rc;
648
649 if (!capable(CAP_SYS_ADMIN))
650 return -EPERM;
651
652 if (copy_from_user(&args, uargs, 3 * sizeof(u32)) != 0)
653 return -EFAULT;
654
655 nargs = args.nargs;
656 if (nargs > ARRAY_SIZE(args.args)
657 || args.nret > ARRAY_SIZE(args.args)
658 || nargs + args.nret > ARRAY_SIZE(args.args))
659 return -EINVAL;
660
661 /* Copy in args. */
662 if (copy_from_user(args.args, uargs->args,
663 nargs * sizeof(rtas_arg_t)) != 0)
664 return -EFAULT;
665
666 if (args.token == RTAS_UNKNOWN_SERVICE)
667 return -EINVAL;
668
669 /* Need to handle ibm,suspend_me call specially */
670 if (args.token == ibm_suspend_me_token) {
671 rc = rtas_ibm_suspend_me(&args);
672 if (rc)
673 return rc;
674 goto copy_return;
675 }
676
677 buff_copy = get_errorlog_buffer();
678
679 spin_lock_irqsave(&rtas.lock, flags);
680
681 rtas.args = args;
682 enter_rtas(__pa(&rtas.args));
683 args = rtas.args;
684
685 args.rets = &args.args[nargs];
686
687 /* A -1 return code indicates that the last command couldn't
688 be completed due to a hardware error. */
689 if (args.rets[0] == -1)
690 errbuf = __fetch_rtas_last_error(buff_copy);
691
692 spin_unlock_irqrestore(&rtas.lock, flags);
693
694 if (buff_copy) {
695 if (errbuf)
696 log_error(errbuf, ERR_TYPE_RTAS_LOG, 0);
697 kfree(buff_copy);
698 }
699
700 copy_return:
701 /* Copy out args. */
702 if (copy_to_user(uargs->args + nargs,
703 args.args + nargs,
704 args.nret * sizeof(rtas_arg_t)) != 0)
705 return -EFAULT;
706
707 return 0;
708 }
709
710 /* This version can't take the spinlock, because it never returns */
711
712 struct rtas_args rtas_stop_self_args = {
713 /* The token is initialized for real in setup_system() */
714 .token = RTAS_UNKNOWN_SERVICE,
715 .nargs = 0,
716 .nret = 1,
717 .rets = &rtas_stop_self_args.args[0],
718 };
719
720 void rtas_stop_self(void)
721 {
722 struct rtas_args *rtas_args = &rtas_stop_self_args;
723
724 local_irq_disable();
725
726 BUG_ON(rtas_args->token == RTAS_UNKNOWN_SERVICE);
727
728 printk("cpu %u (hwid %u) Ready to die...\n",
729 smp_processor_id(), hard_smp_processor_id());
730 enter_rtas(__pa(rtas_args));
731
732 panic("Alas, I survived.\n");
733 }
734
735 /*
736 * Call early during boot, before mem init or bootmem, to retrieve the RTAS
737 * informations from the device-tree and allocate the RMO buffer for userland
738 * accesses.
739 */
740 void __init rtas_initialize(void)
741 {
742 unsigned long rtas_region = RTAS_INSTANTIATE_MAX;
743
744 /* Get RTAS dev node and fill up our "rtas" structure with infos
745 * about it.
746 */
747 rtas.dev = of_find_node_by_name(NULL, "rtas");
748 if (rtas.dev) {
749 u32 *basep, *entryp;
750 u32 *sizep;
751
752 basep = (u32 *)get_property(rtas.dev, "linux,rtas-base", NULL);
753 sizep = (u32 *)get_property(rtas.dev, "rtas-size", NULL);
754 if (basep != NULL && sizep != NULL) {
755 rtas.base = *basep;
756 rtas.size = *sizep;
757 entryp = (u32 *)get_property(rtas.dev, "linux,rtas-entry", NULL);
758 if (entryp == NULL) /* Ugh */
759 rtas.entry = rtas.base;
760 else
761 rtas.entry = *entryp;
762 } else
763 rtas.dev = NULL;
764 }
765 if (!rtas.dev)
766 return;
767
768 /* If RTAS was found, allocate the RMO buffer for it and look for
769 * the stop-self token if any
770 */
771 #ifdef CONFIG_PPC64
772 if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR)) {
773 rtas_region = min(lmb.rmo_size, RTAS_INSTANTIATE_MAX);
774 ibm_suspend_me_token = rtas_token("ibm,suspend-me");
775 }
776 #endif
777 rtas_rmo_buf = lmb_alloc_base(RTAS_RMOBUF_MAX, PAGE_SIZE, rtas_region);
778
779 #ifdef CONFIG_HOTPLUG_CPU
780 rtas_stop_self_args.token = rtas_token("stop-self");
781 #endif /* CONFIG_HOTPLUG_CPU */
782 #ifdef CONFIG_RTAS_ERROR_LOGGING
783 rtas_last_error_token = rtas_token("rtas-last-error");
784 #endif
785 }
786
787
788 EXPORT_SYMBOL(rtas_token);
789 EXPORT_SYMBOL(rtas_call);
790 EXPORT_SYMBOL(rtas_data_buf);
791 EXPORT_SYMBOL(rtas_data_buf_lock);
792 EXPORT_SYMBOL(rtas_extended_busy_delay_time);
793 EXPORT_SYMBOL(rtas_get_sensor);
794 EXPORT_SYMBOL(rtas_get_power_level);
795 EXPORT_SYMBOL(rtas_set_power_level);
796 EXPORT_SYMBOL(rtas_set_indicator);
linux 2.6 git repository for openrd