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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Communication to userspace based on kernel/printk.c | |
10 | */ | |
11 | ||
12 | #include <linux/types.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/sched.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/poll.h> | |
17 | #include <linux/proc_fs.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/vmalloc.h> | |
20 | #include <linux/spinlock.h> | |
21 | #include <linux/cpu.h> | |
f8729e85 | 22 | #include <linux/workqueue.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
1da177e4 LT |
24 | |
25 | #include <asm/uaccess.h> | |
26 | #include <asm/io.h> | |
27 | #include <asm/rtas.h> | |
28 | #include <asm/prom.h> | |
29 | #include <asm/nvram.h> | |
60063497 | 30 | #include <linux/atomic.h> |
e8222502 | 31 | #include <asm/machdep.h> |
e04fa612 | 32 | #include <asm/topology.h> |
1da177e4 | 33 | |
1da177e4 LT |
34 | |
35 | static DEFINE_SPINLOCK(rtasd_log_lock); | |
36 | ||
541b2755 | 37 | static DECLARE_WAIT_QUEUE_HEAD(rtas_log_wait); |
1da177e4 LT |
38 | |
39 | static char *rtas_log_buf; | |
40 | static unsigned long rtas_log_start; | |
41 | static unsigned long rtas_log_size; | |
42 | ||
43 | static int surveillance_timeout = -1; | |
3d541c4b | 44 | |
1da177e4 LT |
45 | static unsigned int rtas_error_log_max; |
46 | static unsigned int rtas_error_log_buffer_max; | |
47 | ||
a4fc3a3c LV |
48 | /* RTAS service tokens */ |
49 | static unsigned int event_scan; | |
50 | static unsigned int rtas_event_scan_rate; | |
51 | ||
4cc7ecb7 | 52 | static bool full_rtas_msgs; |
1da177e4 | 53 | |
79c0108d | 54 | /* Stop logging to nvram after first fatal error */ |
a0c7ce9c TB |
55 | static int logging_enabled; /* Until we initialize everything, |
56 | * make sure we don't try logging | |
57 | * anything */ | |
0f2342c8 | 58 | static int error_log_cnt; |
1da177e4 LT |
59 | |
60 | /* | |
61 | * Since we use 32 bit RTAS, the physical address of this must be below | |
62 | * 4G or else bad things happen. Allocate this in the kernel data and | |
63 | * make it big enough. | |
64 | */ | |
65 | static unsigned char logdata[RTAS_ERROR_LOG_MAX]; | |
66 | ||
1da177e4 LT |
67 | static char *rtas_type[] = { |
68 | "Unknown", "Retry", "TCE Error", "Internal Device Failure", | |
69 | "Timeout", "Data Parity", "Address Parity", "Cache Parity", | |
70 | "Address Invalid", "ECC Uncorrected", "ECC Corrupted", | |
71 | }; | |
72 | ||
73 | static char *rtas_event_type(int type) | |
74 | { | |
75 | if ((type > 0) && (type < 11)) | |
76 | return rtas_type[type]; | |
77 | ||
78 | switch (type) { | |
79 | case RTAS_TYPE_EPOW: | |
80 | return "EPOW"; | |
81 | case RTAS_TYPE_PLATFORM: | |
82 | return "Platform Error"; | |
83 | case RTAS_TYPE_IO: | |
84 | return "I/O Event"; | |
85 | case RTAS_TYPE_INFO: | |
86 | return "Platform Information Event"; | |
87 | case RTAS_TYPE_DEALLOC: | |
88 | return "Resource Deallocation Event"; | |
89 | case RTAS_TYPE_DUMP: | |
90 | return "Dump Notification Event"; | |
49c68a85 JL |
91 | case RTAS_TYPE_PRRN: |
92 | return "Platform Resource Reassignment Event"; | |
1da177e4 LT |
93 | } |
94 | ||
95 | return rtas_type[0]; | |
96 | } | |
97 | ||
98 | /* To see this info, grep RTAS /var/log/messages and each entry | |
99 | * will be collected together with obvious begin/end. | |
100 | * There will be a unique identifier on the begin and end lines. | |
101 | * This will persist across reboots. | |
102 | * | |
103 | * format of error logs returned from RTAS: | |
104 | * bytes (size) : contents | |
105 | * -------------------------------------------------------- | |
106 | * 0-7 (8) : rtas_error_log | |
107 | * 8-47 (40) : extended info | |
108 | * 48-51 (4) : vendor id | |
109 | * 52-1023 (vendor specific) : location code and debug data | |
110 | */ | |
111 | static void printk_log_rtas(char *buf, int len) | |
112 | { | |
113 | ||
114 | int i,j,n = 0; | |
115 | int perline = 16; | |
116 | char buffer[64]; | |
117 | char * str = "RTAS event"; | |
118 | ||
119 | if (full_rtas_msgs) { | |
120 | printk(RTAS_DEBUG "%d -------- %s begin --------\n", | |
121 | error_log_cnt, str); | |
122 | ||
123 | /* | |
124 | * Print perline bytes on each line, each line will start | |
125 | * with RTAS and a changing number, so syslogd will | |
126 | * print lines that are otherwise the same. Separate every | |
127 | * 4 bytes with a space. | |
128 | */ | |
129 | for (i = 0; i < len; i++) { | |
130 | j = i % perline; | |
131 | if (j == 0) { | |
132 | memset(buffer, 0, sizeof(buffer)); | |
133 | n = sprintf(buffer, "RTAS %d:", i/perline); | |
134 | } | |
135 | ||
136 | if ((i % 4) == 0) | |
137 | n += sprintf(buffer+n, " "); | |
138 | ||
139 | n += sprintf(buffer+n, "%02x", (unsigned char)buf[i]); | |
140 | ||
141 | if (j == (perline-1)) | |
142 | printk(KERN_DEBUG "%s\n", buffer); | |
143 | } | |
144 | if ((i % perline) != 0) | |
145 | printk(KERN_DEBUG "%s\n", buffer); | |
146 | ||
147 | printk(RTAS_DEBUG "%d -------- %s end ----------\n", | |
148 | error_log_cnt, str); | |
149 | } else { | |
150 | struct rtas_error_log *errlog = (struct rtas_error_log *)buf; | |
151 | ||
152 | printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n", | |
a08a53ea GK |
153 | error_log_cnt, rtas_event_type(rtas_error_type(errlog)), |
154 | rtas_error_severity(errlog)); | |
1da177e4 LT |
155 | } |
156 | } | |
157 | ||
158 | static int log_rtas_len(char * buf) | |
159 | { | |
160 | int len; | |
161 | struct rtas_error_log *err; | |
a08a53ea | 162 | uint32_t extended_log_length; |
1da177e4 LT |
163 | |
164 | /* rtas fixed header */ | |
165 | len = 8; | |
166 | err = (struct rtas_error_log *)buf; | |
a08a53ea GK |
167 | extended_log_length = rtas_error_extended_log_length(err); |
168 | if (rtas_error_extended(err) && extended_log_length) { | |
1da177e4 LT |
169 | |
170 | /* extended header */ | |
a08a53ea | 171 | len += extended_log_length; |
1da177e4 LT |
172 | } |
173 | ||
4511dad4 LV |
174 | if (rtas_error_log_max == 0) |
175 | rtas_error_log_max = rtas_get_error_log_max(); | |
176 | ||
1da177e4 LT |
177 | if (len > rtas_error_log_max) |
178 | len = rtas_error_log_max; | |
179 | ||
180 | return len; | |
181 | } | |
182 | ||
183 | /* | |
184 | * First write to nvram, if fatal error, that is the only | |
185 | * place we log the info. The error will be picked up | |
186 | * on the next reboot by rtasd. If not fatal, run the | |
187 | * method for the type of error. Currently, only RTAS | |
188 | * errors have methods implemented, but in the future | |
189 | * there might be a need to store data in nvram before a | |
190 | * call to panic(). | |
191 | * | |
192 | * XXX We write to nvram periodically, to indicate error has | |
193 | * been written and sync'd, but there is a possibility | |
194 | * that if we don't shutdown correctly, a duplicate error | |
195 | * record will be created on next reboot. | |
196 | */ | |
197 | void pSeries_log_error(char *buf, unsigned int err_type, int fatal) | |
198 | { | |
199 | unsigned long offset; | |
200 | unsigned long s; | |
201 | int len = 0; | |
202 | ||
f7ebf352 | 203 | pr_debug("rtasd: logging event\n"); |
1da177e4 LT |
204 | if (buf == NULL) |
205 | return; | |
206 | ||
207 | spin_lock_irqsave(&rtasd_log_lock, s); | |
208 | ||
209 | /* get length and increase count */ | |
210 | switch (err_type & ERR_TYPE_MASK) { | |
211 | case ERR_TYPE_RTAS_LOG: | |
212 | len = log_rtas_len(buf); | |
213 | if (!(err_type & ERR_FLAG_BOOT)) | |
214 | error_log_cnt++; | |
215 | break; | |
216 | case ERR_TYPE_KERNEL_PANIC: | |
217 | default: | |
64db4cff | 218 | WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ |
1da177e4 LT |
219 | spin_unlock_irqrestore(&rtasd_log_lock, s); |
220 | return; | |
221 | } | |
222 | ||
3d541c4b | 223 | #ifdef CONFIG_PPC64 |
1da177e4 | 224 | /* Write error to NVRAM */ |
a0c7ce9c | 225 | if (logging_enabled && !(err_type & ERR_FLAG_BOOT)) |
0f2342c8 | 226 | nvram_write_error_log(buf, len, err_type, error_log_cnt); |
3d541c4b | 227 | #endif /* CONFIG_PPC64 */ |
1da177e4 LT |
228 | |
229 | /* | |
230 | * rtas errors can occur during boot, and we do want to capture | |
231 | * those somewhere, even if nvram isn't ready (why not?), and even | |
232 | * if rtasd isn't ready. Put them into the boot log, at least. | |
233 | */ | |
234 | if ((err_type & ERR_TYPE_MASK) == ERR_TYPE_RTAS_LOG) | |
235 | printk_log_rtas(buf, len); | |
236 | ||
237 | /* Check to see if we need to or have stopped logging */ | |
a0c7ce9c TB |
238 | if (fatal || !logging_enabled) { |
239 | logging_enabled = 0; | |
64db4cff | 240 | WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ |
1da177e4 LT |
241 | spin_unlock_irqrestore(&rtasd_log_lock, s); |
242 | return; | |
243 | } | |
244 | ||
245 | /* call type specific method for error */ | |
246 | switch (err_type & ERR_TYPE_MASK) { | |
247 | case ERR_TYPE_RTAS_LOG: | |
248 | offset = rtas_error_log_buffer_max * | |
249 | ((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK); | |
250 | ||
251 | /* First copy over sequence number */ | |
252 | memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int)); | |
253 | ||
254 | /* Second copy over error log data */ | |
255 | offset += sizeof(int); | |
256 | memcpy(&rtas_log_buf[offset], buf, len); | |
257 | ||
258 | if (rtas_log_size < LOG_NUMBER) | |
259 | rtas_log_size += 1; | |
260 | else | |
261 | rtas_log_start += 1; | |
262 | ||
64db4cff | 263 | WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ |
1da177e4 LT |
264 | spin_unlock_irqrestore(&rtasd_log_lock, s); |
265 | wake_up_interruptible(&rtas_log_wait); | |
266 | break; | |
267 | case ERR_TYPE_KERNEL_PANIC: | |
268 | default: | |
64db4cff | 269 | WARN_ON_ONCE(!irqs_disabled()); /* @@@ DEBUG @@@ */ |
1da177e4 LT |
270 | spin_unlock_irqrestore(&rtasd_log_lock, s); |
271 | return; | |
272 | } | |
49c68a85 JL |
273 | } |
274 | ||
275 | #ifdef CONFIG_PPC_PSERIES | |
276 | static s32 prrn_update_scope; | |
277 | ||
278 | static void prrn_work_fn(struct work_struct *work) | |
279 | { | |
280 | /* | |
281 | * For PRRN, we must pass the negative of the scope value in | |
282 | * the RTAS event. | |
283 | */ | |
284 | pseries_devicetree_update(-prrn_update_scope); | |
285 | } | |
286 | ||
287 | static DECLARE_WORK(prrn_work, prrn_work_fn); | |
288 | ||
e51df2c1 | 289 | static void prrn_schedule_update(u32 scope) |
49c68a85 JL |
290 | { |
291 | flush_work(&prrn_work); | |
292 | prrn_update_scope = scope; | |
293 | schedule_work(&prrn_work); | |
294 | } | |
295 | ||
296 | static void handle_rtas_event(const struct rtas_error_log *log) | |
297 | { | |
a08a53ea GK |
298 | if (rtas_error_type(log) != RTAS_TYPE_PRRN || !prrn_is_enabled()) |
299 | return; | |
49c68a85 | 300 | |
a08a53ea GK |
301 | /* For PRRN Events the extended log length is used to denote |
302 | * the scope for calling rtas update-nodes. | |
303 | */ | |
304 | prrn_schedule_update(rtas_error_extended_log_length(log)); | |
49c68a85 JL |
305 | } |
306 | ||
307 | #else | |
1da177e4 | 308 | |
49c68a85 JL |
309 | static void handle_rtas_event(const struct rtas_error_log *log) |
310 | { | |
311 | return; | |
1da177e4 LT |
312 | } |
313 | ||
49c68a85 JL |
314 | #endif |
315 | ||
1da177e4 LT |
316 | static int rtas_log_open(struct inode * inode, struct file * file) |
317 | { | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static int rtas_log_release(struct inode * inode, struct file * file) | |
322 | { | |
323 | return 0; | |
324 | } | |
325 | ||
326 | /* This will check if all events are logged, if they are then, we | |
327 | * know that we can safely clear the events in NVRAM. | |
328 | * Next we'll sit and wait for something else to log. | |
329 | */ | |
330 | static ssize_t rtas_log_read(struct file * file, char __user * buf, | |
331 | size_t count, loff_t *ppos) | |
332 | { | |
333 | int error; | |
334 | char *tmp; | |
335 | unsigned long s; | |
336 | unsigned long offset; | |
337 | ||
338 | if (!buf || count < rtas_error_log_buffer_max) | |
339 | return -EINVAL; | |
340 | ||
341 | count = rtas_error_log_buffer_max; | |
342 | ||
343 | if (!access_ok(VERIFY_WRITE, buf, count)) | |
344 | return -EFAULT; | |
345 | ||
346 | tmp = kmalloc(count, GFP_KERNEL); | |
347 | if (!tmp) | |
348 | return -ENOMEM; | |
349 | ||
1da177e4 | 350 | spin_lock_irqsave(&rtasd_log_lock, s); |
3d541c4b | 351 | |
1da177e4 | 352 | /* if it's 0, then we know we got the last one (the one in NVRAM) */ |
76c31f23 VM |
353 | while (rtas_log_size == 0) { |
354 | if (file->f_flags & O_NONBLOCK) { | |
355 | spin_unlock_irqrestore(&rtasd_log_lock, s); | |
356 | error = -EAGAIN; | |
357 | goto out; | |
358 | } | |
1da177e4 | 359 | |
76c31f23 VM |
360 | if (!logging_enabled) { |
361 | spin_unlock_irqrestore(&rtasd_log_lock, s); | |
362 | error = -ENODATA; | |
363 | goto out; | |
364 | } | |
3d541c4b | 365 | #ifdef CONFIG_PPC64 |
76c31f23 | 366 | nvram_clear_error_log(); |
3d541c4b | 367 | #endif /* CONFIG_PPC64 */ |
1da177e4 | 368 | |
76c31f23 VM |
369 | spin_unlock_irqrestore(&rtasd_log_lock, s); |
370 | error = wait_event_interruptible(rtas_log_wait, rtas_log_size); | |
371 | if (error) | |
372 | goto out; | |
373 | spin_lock_irqsave(&rtasd_log_lock, s); | |
374 | } | |
1da177e4 | 375 | |
1da177e4 LT |
376 | offset = rtas_error_log_buffer_max * (rtas_log_start & LOG_NUMBER_MASK); |
377 | memcpy(tmp, &rtas_log_buf[offset], count); | |
378 | ||
379 | rtas_log_start += 1; | |
380 | rtas_log_size -= 1; | |
381 | spin_unlock_irqrestore(&rtasd_log_lock, s); | |
382 | ||
383 | error = copy_to_user(buf, tmp, count) ? -EFAULT : count; | |
384 | out: | |
385 | kfree(tmp); | |
386 | return error; | |
387 | } | |
388 | ||
389 | static unsigned int rtas_log_poll(struct file *file, poll_table * wait) | |
390 | { | |
391 | poll_wait(file, &rtas_log_wait, wait); | |
392 | if (rtas_log_size) | |
393 | return POLLIN | POLLRDNORM; | |
394 | return 0; | |
395 | } | |
396 | ||
541b2755 | 397 | static const struct file_operations proc_rtas_log_operations = { |
1da177e4 LT |
398 | .read = rtas_log_read, |
399 | .poll = rtas_log_poll, | |
400 | .open = rtas_log_open, | |
401 | .release = rtas_log_release, | |
6038f373 | 402 | .llseek = noop_llseek, |
1da177e4 LT |
403 | }; |
404 | ||
405 | static int enable_surveillance(int timeout) | |
406 | { | |
407 | int error; | |
408 | ||
409 | error = rtas_set_indicator(SURVEILLANCE_TOKEN, 0, timeout); | |
410 | ||
411 | if (error == 0) | |
412 | return 0; | |
413 | ||
414 | if (error == -EINVAL) { | |
90ddfebe | 415 | printk(KERN_DEBUG "rtasd: surveillance not supported\n"); |
1da177e4 LT |
416 | return 0; |
417 | } | |
418 | ||
419 | printk(KERN_ERR "rtasd: could not update surveillance\n"); | |
420 | return -1; | |
421 | } | |
422 | ||
a4fc3a3c | 423 | static void do_event_scan(void) |
1da177e4 LT |
424 | { |
425 | int error; | |
426 | do { | |
427 | memset(logdata, 0, rtas_error_log_max); | |
428 | error = rtas_call(event_scan, 4, 1, NULL, | |
429 | RTAS_EVENT_SCAN_ALL_EVENTS, 0, | |
430 | __pa(logdata), rtas_error_log_max); | |
431 | if (error == -1) { | |
432 | printk(KERN_ERR "event-scan failed\n"); | |
433 | break; | |
434 | } | |
435 | ||
49c68a85 | 436 | if (error == 0) { |
1da177e4 | 437 | pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0); |
49c68a85 JL |
438 | handle_rtas_event((struct rtas_error_log *)logdata); |
439 | } | |
1da177e4 LT |
440 | |
441 | } while(error == 0); | |
442 | } | |
443 | ||
f8729e85 | 444 | static void rtas_event_scan(struct work_struct *w); |
635218c7 | 445 | static DECLARE_DELAYED_WORK(event_scan_work, rtas_event_scan); |
f8729e85 AB |
446 | |
447 | /* | |
448 | * Delay should be at least one second since some machines have problems if | |
449 | * we call event-scan too quickly. | |
450 | */ | |
451 | static unsigned long event_scan_delay = 1*HZ; | |
452 | static int first_pass = 1; | |
453 | ||
454 | static void rtas_event_scan(struct work_struct *w) | |
1da177e4 | 455 | { |
f8729e85 AB |
456 | unsigned int cpu; |
457 | ||
458 | do_event_scan(); | |
1da177e4 | 459 | |
86ef5c9a | 460 | get_online_cpus(); |
f8729e85 | 461 | |
9ff0c61d PM |
462 | /* raw_ OK because just using CPU as starting point. */ |
463 | cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask); | |
d5f86fe3 AB |
464 | if (cpu >= nr_cpu_ids) { |
465 | cpu = cpumask_first(cpu_online_mask); | |
f8729e85 AB |
466 | |
467 | if (first_pass) { | |
468 | first_pass = 0; | |
469 | event_scan_delay = 30*HZ/rtas_event_scan_rate; | |
470 | ||
471 | if (surveillance_timeout != -1) { | |
472 | pr_debug("rtasd: enabling surveillance\n"); | |
473 | enable_surveillance(surveillance_timeout); | |
474 | pr_debug("rtasd: surveillance enabled\n"); | |
475 | } | |
476 | } | |
1da177e4 | 477 | } |
f8729e85 AB |
478 | |
479 | schedule_delayed_work_on(cpu, &event_scan_work, | |
480 | __round_jiffies_relative(event_scan_delay, cpu)); | |
481 | ||
86ef5c9a | 482 | put_online_cpus(); |
1da177e4 LT |
483 | } |
484 | ||
3d541c4b | 485 | #ifdef CONFIG_PPC64 |
6e45273e | 486 | static void retrieve_nvram_error_log(void) |
1da177e4 | 487 | { |
3d541c4b BH |
488 | unsigned int err_type ; |
489 | int rc ; | |
1da177e4 LT |
490 | |
491 | /* See if we have any error stored in NVRAM */ | |
492 | memset(logdata, 0, rtas_error_log_max); | |
0f2342c8 LV |
493 | rc = nvram_read_error_log(logdata, rtas_error_log_max, |
494 | &err_type, &error_log_cnt); | |
a0c7ce9c TB |
495 | /* We can use rtas_log_buf now */ |
496 | logging_enabled = 1; | |
1da177e4 LT |
497 | if (!rc) { |
498 | if (err_type != ERR_FLAG_ALREADY_LOGGED) { | |
499 | pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0); | |
500 | } | |
501 | } | |
3d541c4b BH |
502 | } |
503 | #else /* CONFIG_PPC64 */ | |
6e45273e | 504 | static void retrieve_nvram_error_log(void) |
3d541c4b BH |
505 | { |
506 | } | |
507 | #endif /* CONFIG_PPC64 */ | |
508 | ||
509 | static void start_event_scan(void) | |
510 | { | |
511 | printk(KERN_DEBUG "RTAS daemon started\n"); | |
512 | pr_debug("rtasd: will sleep for %d milliseconds\n", | |
513 | (30000 / rtas_event_scan_rate)); | |
514 | ||
25985edc | 515 | /* Retrieve errors from nvram if any */ |
6e45273e | 516 | retrieve_nvram_error_log(); |
1da177e4 | 517 | |
d5f86fe3 AB |
518 | schedule_delayed_work_on(cpumask_first(cpu_online_mask), |
519 | &event_scan_work, event_scan_delay); | |
1da177e4 LT |
520 | } |
521 | ||
df17f56d RN |
522 | /* Cancel the rtas event scan work */ |
523 | void rtas_cancel_event_scan(void) | |
524 | { | |
525 | cancel_delayed_work_sync(&event_scan_work); | |
526 | } | |
527 | EXPORT_SYMBOL_GPL(rtas_cancel_event_scan); | |
528 | ||
8c6a0a1f | 529 | static int __init rtas_event_scan_init(void) |
1da177e4 | 530 | { |
3d541c4b | 531 | if (!machine_is(pseries) && !machine_is(chrp)) |
799d6046 PM |
532 | return 0; |
533 | ||
534 | /* No RTAS */ | |
a4fc3a3c LV |
535 | event_scan = rtas_token("event-scan"); |
536 | if (event_scan == RTAS_UNKNOWN_SERVICE) { | |
3d541c4b | 537 | printk(KERN_INFO "rtasd: No event-scan on system\n"); |
49c28e4e | 538 | return -ENODEV; |
1da177e4 LT |
539 | } |
540 | ||
4511dad4 LV |
541 | rtas_event_scan_rate = rtas_token("rtas-event-scan-rate"); |
542 | if (rtas_event_scan_rate == RTAS_UNKNOWN_SERVICE) { | |
543 | printk(KERN_ERR "rtasd: no rtas-event-scan-rate on system\n"); | |
544 | return -ENODEV; | |
545 | } | |
546 | ||
7358650e ME |
547 | if (!rtas_event_scan_rate) { |
548 | /* Broken firmware: take a rate of zero to mean don't scan */ | |
549 | printk(KERN_DEBUG "rtasd: scan rate is 0, not scanning\n"); | |
550 | return 0; | |
551 | } | |
552 | ||
4511dad4 LV |
553 | /* Make room for the sequence number */ |
554 | rtas_error_log_max = rtas_get_error_log_max(); | |
555 | rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int); | |
556 | ||
557 | rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER); | |
558 | if (!rtas_log_buf) { | |
559 | printk(KERN_ERR "rtasd: no memory\n"); | |
560 | return -ENOMEM; | |
561 | } | |
562 | ||
8c6a0a1f GK |
563 | start_event_scan(); |
564 | ||
565 | return 0; | |
566 | } | |
567 | arch_initcall(rtas_event_scan_init); | |
568 | ||
569 | static int __init rtas_init(void) | |
570 | { | |
571 | struct proc_dir_entry *entry; | |
572 | ||
573 | if (!machine_is(pseries) && !machine_is(chrp)) | |
574 | return 0; | |
575 | ||
576 | if (!rtas_log_buf) | |
577 | return -ENODEV; | |
578 | ||
3d541c4b | 579 | entry = proc_create("powerpc/rtas/error_log", S_IRUSR, NULL, |
66747138 DL |
580 | &proc_rtas_log_operations); |
581 | if (!entry) | |
1da177e4 LT |
582 | printk(KERN_ERR "Failed to create error_log proc entry\n"); |
583 | ||
1da177e4 LT |
584 | return 0; |
585 | } | |
3d541c4b | 586 | __initcall(rtas_init); |
1da177e4 LT |
587 | |
588 | static int __init surveillance_setup(char *str) | |
589 | { | |
590 | int i; | |
591 | ||
3d541c4b BH |
592 | /* We only do surveillance on pseries */ |
593 | if (!machine_is(pseries)) | |
594 | return 0; | |
595 | ||
1da177e4 LT |
596 | if (get_option(&str,&i)) { |
597 | if (i >= 0 && i <= 255) | |
598 | surveillance_timeout = i; | |
599 | } | |
600 | ||
601 | return 1; | |
602 | } | |
3d541c4b | 603 | __setup("surveillance=", surveillance_setup); |
1da177e4 LT |
604 | |
605 | static int __init rtasmsgs_setup(char *str) | |
606 | { | |
4cc7ecb7 | 607 | return (kstrtobool(str, &full_rtas_msgs) == 0); |
1da177e4 | 608 | } |
1da177e4 | 609 | __setup("rtasmsgs=", rtasmsgs_setup); |