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1/*
2 * arch/ppc64/kernel/rtas-proc.c
3 * Copyright (C) 2000 Tilmann Bitterberg
4 * (tilmann@bitterberg.de)
5 *
6 * RTAS (Runtime Abstraction Services) stuff
7 * Intention is to provide a clean user interface
8 * to use the RTAS.
9 *
10 * TODO:
11 * Split off a header file and maybe move it to a different
12 * location. Write Documentation on what the /proc/rtas/ entries
13 * actually do.
14 */
15
16#include <linux/errno.h>
17#include <linux/sched.h>
18#include <linux/proc_fs.h>
19#include <linux/stat.h>
20#include <linux/ctype.h>
21#include <linux/time.h>
22#include <linux/string.h>
23#include <linux/init.h>
24#include <linux/seq_file.h>
25#include <linux/bitops.h>
26#include <linux/rtc.h>
27
28#include <asm/uaccess.h>
29#include <asm/processor.h>
30#include <asm/io.h>
31#include <asm/prom.h>
32#include <asm/rtas.h>
33#include <asm/machdep.h> /* for ppc_md */
34#include <asm/time.h>
35#include <asm/systemcfg.h>
36
37/* Token for Sensors */
38#define KEY_SWITCH 0x0001
39#define ENCLOSURE_SWITCH 0x0002
40#define THERMAL_SENSOR 0x0003
41#define LID_STATUS 0x0004
42#define POWER_SOURCE 0x0005
43#define BATTERY_VOLTAGE 0x0006
44#define BATTERY_REMAINING 0x0007
45#define BATTERY_PERCENTAGE 0x0008
46#define EPOW_SENSOR 0x0009
47#define BATTERY_CYCLESTATE 0x000a
48#define BATTERY_CHARGING 0x000b
49
50/* IBM specific sensors */
51#define IBM_SURVEILLANCE 0x2328 /* 9000 */
52#define IBM_FANRPM 0x2329 /* 9001 */
53#define IBM_VOLTAGE 0x232a /* 9002 */
54#define IBM_DRCONNECTOR 0x232b /* 9003 */
55#define IBM_POWERSUPPLY 0x232c /* 9004 */
56
57/* Status return values */
58#define SENSOR_CRITICAL_HIGH 13
59#define SENSOR_WARNING_HIGH 12
60#define SENSOR_NORMAL 11
61#define SENSOR_WARNING_LOW 10
62#define SENSOR_CRITICAL_LOW 9
63#define SENSOR_SUCCESS 0
64#define SENSOR_HW_ERROR -1
65#define SENSOR_BUSY -2
66#define SENSOR_NOT_EXIST -3
67#define SENSOR_DR_ENTITY -9000
68
69/* Location Codes */
70#define LOC_SCSI_DEV_ADDR 'A'
71#define LOC_SCSI_DEV_LOC 'B'
72#define LOC_CPU 'C'
73#define LOC_DISKETTE 'D'
74#define LOC_ETHERNET 'E'
75#define LOC_FAN 'F'
76#define LOC_GRAPHICS 'G'
77/* reserved / not used 'H' */
78#define LOC_IO_ADAPTER 'I'
79/* reserved / not used 'J' */
80#define LOC_KEYBOARD 'K'
81#define LOC_LCD 'L'
82#define LOC_MEMORY 'M'
83#define LOC_NV_MEMORY 'N'
84#define LOC_MOUSE 'O'
85#define LOC_PLANAR 'P'
86#define LOC_OTHER_IO 'Q'
87#define LOC_PARALLEL 'R'
88#define LOC_SERIAL 'S'
89#define LOC_DEAD_RING 'T'
90#define LOC_RACKMOUNTED 'U' /* for _u_nit is rack mounted */
91#define LOC_VOLTAGE 'V'
92#define LOC_SWITCH_ADAPTER 'W'
93#define LOC_OTHER 'X'
94#define LOC_FIRMWARE 'Y'
95#define LOC_SCSI 'Z'
96
97/* Tokens for indicators */
98#define TONE_FREQUENCY 0x0001 /* 0 - 1000 (HZ)*/
99#define TONE_VOLUME 0x0002 /* 0 - 100 (%) */
100#define SYSTEM_POWER_STATE 0x0003
101#define WARNING_LIGHT 0x0004
102#define DISK_ACTIVITY_LIGHT 0x0005
103#define HEX_DISPLAY_UNIT 0x0006
104#define BATTERY_WARNING_TIME 0x0007
105#define CONDITION_CYCLE_REQUEST 0x0008
106#define SURVEILLANCE_INDICATOR 0x2328 /* 9000 */
107#define DR_ACTION 0x2329 /* 9001 */
108#define DR_INDICATOR 0x232a /* 9002 */
109/* 9003 - 9004: Vendor specific */
110/* 9006 - 9999: Vendor specific */
111
112/* other */
113#define MAX_SENSORS 17 /* I only know of 17 sensors */
114#define MAX_LINELENGTH 256
115#define SENSOR_PREFIX "ibm,sensor-"
116#define cel_to_fahr(x) ((x*9/5)+32)
117
118
119/* Globals */
120static struct rtas_sensors sensors;
121static struct device_node *rtas_node = NULL;
122static unsigned long power_on_time = 0; /* Save the time the user set */
123static char progress_led[MAX_LINELENGTH];
124
125static unsigned long rtas_tone_frequency = 1000;
126static unsigned long rtas_tone_volume = 0;
127
128/* ****************STRUCTS******************************************* */
129struct individual_sensor {
130 unsigned int token;
131 unsigned int quant;
132};
133
134struct rtas_sensors {
135 struct individual_sensor sensor[MAX_SENSORS];
136 unsigned int quant;
137};
138
139/* ****************************************************************** */
140/* Declarations */
141static int ppc_rtas_sensors_show(struct seq_file *m, void *v);
142static int ppc_rtas_clock_show(struct seq_file *m, void *v);
143static ssize_t ppc_rtas_clock_write(struct file *file,
144 const char __user *buf, size_t count, loff_t *ppos);
145static int ppc_rtas_progress_show(struct seq_file *m, void *v);
146static ssize_t ppc_rtas_progress_write(struct file *file,
147 const char __user *buf, size_t count, loff_t *ppos);
148static int ppc_rtas_poweron_show(struct seq_file *m, void *v);
149static ssize_t ppc_rtas_poweron_write(struct file *file,
150 const char __user *buf, size_t count, loff_t *ppos);
151
152static ssize_t ppc_rtas_tone_freq_write(struct file *file,
153 const char __user *buf, size_t count, loff_t *ppos);
154static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v);
155static ssize_t ppc_rtas_tone_volume_write(struct file *file,
156 const char __user *buf, size_t count, loff_t *ppos);
157static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v);
158static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v);
159
160static int sensors_open(struct inode *inode, struct file *file)
161{
162 return single_open(file, ppc_rtas_sensors_show, NULL);
163}
164
165struct file_operations ppc_rtas_sensors_operations = {
166 .open = sensors_open,
167 .read = seq_read,
168 .llseek = seq_lseek,
169 .release = single_release,
170};
171
172static int poweron_open(struct inode *inode, struct file *file)
173{
174 return single_open(file, ppc_rtas_poweron_show, NULL);
175}
176
177struct file_operations ppc_rtas_poweron_operations = {
178 .open = poweron_open,
179 .read = seq_read,
180 .llseek = seq_lseek,
181 .write = ppc_rtas_poweron_write,
182 .release = single_release,
183};
184
185static int progress_open(struct inode *inode, struct file *file)
186{
187 return single_open(file, ppc_rtas_progress_show, NULL);
188}
189
190struct file_operations ppc_rtas_progress_operations = {
191 .open = progress_open,
192 .read = seq_read,
193 .llseek = seq_lseek,
194 .write = ppc_rtas_progress_write,
195 .release = single_release,
196};
197
198static int clock_open(struct inode *inode, struct file *file)
199{
200 return single_open(file, ppc_rtas_clock_show, NULL);
201}
202
203struct file_operations ppc_rtas_clock_operations = {
204 .open = clock_open,
205 .read = seq_read,
206 .llseek = seq_lseek,
207 .write = ppc_rtas_clock_write,
208 .release = single_release,
209};
210
211static int tone_freq_open(struct inode *inode, struct file *file)
212{
213 return single_open(file, ppc_rtas_tone_freq_show, NULL);
214}
215
216struct file_operations ppc_rtas_tone_freq_operations = {
217 .open = tone_freq_open,
218 .read = seq_read,
219 .llseek = seq_lseek,
220 .write = ppc_rtas_tone_freq_write,
221 .release = single_release,
222};
223
224static int tone_volume_open(struct inode *inode, struct file *file)
225{
226 return single_open(file, ppc_rtas_tone_volume_show, NULL);
227}
228
229struct file_operations ppc_rtas_tone_volume_operations = {
230 .open = tone_volume_open,
231 .read = seq_read,
232 .llseek = seq_lseek,
233 .write = ppc_rtas_tone_volume_write,
234 .release = single_release,
235};
236
237static int rmo_buf_open(struct inode *inode, struct file *file)
238{
239 return single_open(file, ppc_rtas_rmo_buf_show, NULL);
240}
241
242struct file_operations ppc_rtas_rmo_buf_ops = {
243 .open = rmo_buf_open,
244 .read = seq_read,
245 .llseek = seq_lseek,
246 .release = single_release,
247};
248
249static int ppc_rtas_find_all_sensors(void);
250static void ppc_rtas_process_sensor(struct seq_file *m,
251 struct individual_sensor *s, int state, int error, char *loc);
252static char *ppc_rtas_process_error(int error);
253static void get_location_code(struct seq_file *m,
254 struct individual_sensor *s, char *loc);
255static void check_location_string(struct seq_file *m, char *c);
256static void check_location(struct seq_file *m, char *c);
257
258static int __init proc_rtas_init(void)
259{
260 struct proc_dir_entry *entry;
261
262 if (!(systemcfg->platform & PLATFORM_PSERIES))
263 return 1;
264
265 rtas_node = of_find_node_by_name(NULL, "rtas");
266 if (rtas_node == NULL)
267 return 1;
268
269 entry = create_proc_entry("ppc64/rtas/progress", S_IRUGO|S_IWUSR, NULL);
270 if (entry)
271 entry->proc_fops = &ppc_rtas_progress_operations;
272
273 entry = create_proc_entry("ppc64/rtas/clock", S_IRUGO|S_IWUSR, NULL);
274 if (entry)
275 entry->proc_fops = &ppc_rtas_clock_operations;
276
277 entry = create_proc_entry("ppc64/rtas/poweron", S_IWUSR|S_IRUGO, NULL);
278 if (entry)
279 entry->proc_fops = &ppc_rtas_poweron_operations;
280
281 entry = create_proc_entry("ppc64/rtas/sensors", S_IRUGO, NULL);
282 if (entry)
283 entry->proc_fops = &ppc_rtas_sensors_operations;
284
285 entry = create_proc_entry("ppc64/rtas/frequency", S_IWUSR|S_IRUGO,
286 NULL);
287 if (entry)
288 entry->proc_fops = &ppc_rtas_tone_freq_operations;
289
290 entry = create_proc_entry("ppc64/rtas/volume", S_IWUSR|S_IRUGO, NULL);
291 if (entry)
292 entry->proc_fops = &ppc_rtas_tone_volume_operations;
293
294 entry = create_proc_entry("ppc64/rtas/rmo_buffer", S_IRUSR, NULL);
295 if (entry)
296 entry->proc_fops = &ppc_rtas_rmo_buf_ops;
297
298 return 0;
299}
300
301__initcall(proc_rtas_init);
302
303static int parse_number(const char __user *p, size_t count, unsigned long *val)
304{
305 char buf[40];
306 char *end;
307
308 if (count > 39)
309 return -EINVAL;
310
311 if (copy_from_user(buf, p, count))
312 return -EFAULT;
313
314 buf[count] = 0;
315
316 *val = simple_strtoul(buf, &end, 10);
317 if (*end && *end != '\n')
318 return -EINVAL;
319
320 return 0;
321}
322
323/* ****************************************************************** */
324/* POWER-ON-TIME */
325/* ****************************************************************** */
326static ssize_t ppc_rtas_poweron_write(struct file *file,
327 const char __user *buf, size_t count, loff_t *ppos)
328{
329 struct rtc_time tm;
330 unsigned long nowtime;
331 int error = parse_number(buf, count, &nowtime);
332 if (error)
333 return error;
334
335 power_on_time = nowtime; /* save the time */
336
337 to_tm(nowtime, &tm);
338
339 error = rtas_call(rtas_token("set-time-for-power-on"), 7, 1, NULL,
340 tm.tm_year, tm.tm_mon, tm.tm_mday,
341 tm.tm_hour, tm.tm_min, tm.tm_sec, 0 /* nano */);
342 if (error)
343 printk(KERN_WARNING "error: setting poweron time returned: %s\n",
344 ppc_rtas_process_error(error));
345 return count;
346}
347/* ****************************************************************** */
348static int ppc_rtas_poweron_show(struct seq_file *m, void *v)
349{
350 if (power_on_time == 0)
351 seq_printf(m, "Power on time not set\n");
352 else
353 seq_printf(m, "%lu\n",power_on_time);
354 return 0;
355}
356
357/* ****************************************************************** */
358/* PROGRESS */
359/* ****************************************************************** */
360static ssize_t ppc_rtas_progress_write(struct file *file,
361 const char __user *buf, size_t count, loff_t *ppos)
362{
363 unsigned long hex;
364
365 if (count >= MAX_LINELENGTH)
366 count = MAX_LINELENGTH -1;
367 if (copy_from_user(progress_led, buf, count)) { /* save the string */
368 return -EFAULT;
369 }
370 progress_led[count] = 0;
371
372 /* Lets see if the user passed hexdigits */
373 hex = simple_strtoul(progress_led, NULL, 10);
374
375 rtas_progress ((char *)progress_led, hex);
376 return count;
377
378 /* clear the line */
379 /* rtas_progress(" ", 0xffff);*/
380}
381/* ****************************************************************** */
382static int ppc_rtas_progress_show(struct seq_file *m, void *v)
383{
384 if (progress_led)
385 seq_printf(m, "%s\n", progress_led);
386 return 0;
387}
388
389/* ****************************************************************** */
390/* CLOCK */
391/* ****************************************************************** */
392static ssize_t ppc_rtas_clock_write(struct file *file,
393 const char __user *buf, size_t count, loff_t *ppos)
394{
395 struct rtc_time tm;
396 unsigned long nowtime;
397 int error = parse_number(buf, count, &nowtime);
398 if (error)
399 return error;
400
401 to_tm(nowtime, &tm);
402 error = rtas_call(rtas_token("set-time-of-day"), 7, 1, NULL,
403 tm.tm_year, tm.tm_mon, tm.tm_mday,
404 tm.tm_hour, tm.tm_min, tm.tm_sec, 0);
405 if (error)
406 printk(KERN_WARNING "error: setting the clock returned: %s\n",
407 ppc_rtas_process_error(error));
408 return count;
409}
410/* ****************************************************************** */
411static int ppc_rtas_clock_show(struct seq_file *m, void *v)
412{
413 int ret[8];
414 int error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret);
415
416 if (error) {
417 printk(KERN_WARNING "error: reading the clock returned: %s\n",
418 ppc_rtas_process_error(error));
419 seq_printf(m, "0");
420 } else {
421 unsigned int year, mon, day, hour, min, sec;
422 year = ret[0]; mon = ret[1]; day = ret[2];
423 hour = ret[3]; min = ret[4]; sec = ret[5];
424 seq_printf(m, "%lu\n",
425 mktime(year, mon, day, hour, min, sec));
426 }
427 return 0;
428}
429
430/* ****************************************************************** */
431/* SENSOR STUFF */
432/* ****************************************************************** */
433static int ppc_rtas_sensors_show(struct seq_file *m, void *v)
434{
435 int i,j;
436 int state, error;
437 int get_sensor_state = rtas_token("get-sensor-state");
438
439 seq_printf(m, "RTAS (RunTime Abstraction Services) Sensor Information\n");
440 seq_printf(m, "Sensor\t\tValue\t\tCondition\tLocation\n");
441 seq_printf(m, "********************************************************\n");
442
443 if (ppc_rtas_find_all_sensors() != 0) {
444 seq_printf(m, "\nNo sensors are available\n");
445 return 0;
446 }
447
448 for (i=0; i<sensors.quant; i++) {
449 struct individual_sensor *p = &sensors.sensor[i];
450 char rstr[64];
451 char *loc;
452 int llen, offs;
453
454 sprintf (rstr, SENSOR_PREFIX"%04d", p->token);
455 loc = (char *) get_property(rtas_node, rstr, &llen);
456
457 /* A sensor may have multiple instances */
458 for (j = 0, offs = 0; j <= p->quant; j++) {
459 error = rtas_call(get_sensor_state, 2, 2, &state,
460 p->token, j);
461
462 ppc_rtas_process_sensor(m, p, state, error, loc);
463 seq_putc(m, '\n');
464 if (loc) {
465 offs += strlen(loc) + 1;
466 loc += strlen(loc) + 1;
467 if (offs >= llen)
468 loc = NULL;
469 }
470 }
471 }
472 return 0;
473}
474
475/* ****************************************************************** */
476
477static int ppc_rtas_find_all_sensors(void)
478{
479 unsigned int *utmp;
480 int len, i;
481
482 utmp = (unsigned int *) get_property(rtas_node, "rtas-sensors", &len);
483 if (utmp == NULL) {
484 printk (KERN_ERR "error: could not get rtas-sensors\n");
485 return 1;
486 }
487
488 sensors.quant = len / 8; /* int + int */
489
490 for (i=0; i<sensors.quant; i++) {
491 sensors.sensor[i].token = *utmp++;
492 sensors.sensor[i].quant = *utmp++;
493 }
494 return 0;
495}
496
497/* ****************************************************************** */
498/*
499 * Builds a string of what rtas returned
500 */
501static char *ppc_rtas_process_error(int error)
502{
503 switch (error) {
504 case SENSOR_CRITICAL_HIGH:
505 return "(critical high)";
506 case SENSOR_WARNING_HIGH:
507 return "(warning high)";
508 case SENSOR_NORMAL:
509 return "(normal)";
510 case SENSOR_WARNING_LOW:
511 return "(warning low)";
512 case SENSOR_CRITICAL_LOW:
513 return "(critical low)";
514 case SENSOR_SUCCESS:
515 return "(read ok)";
516 case SENSOR_HW_ERROR:
517 return "(hardware error)";
518 case SENSOR_BUSY:
519 return "(busy)";
520 case SENSOR_NOT_EXIST:
521 return "(non existent)";
522 case SENSOR_DR_ENTITY:
523 return "(dr entity removed)";
524 default:
525 return "(UNKNOWN)";
526 }
527}
528
529/* ****************************************************************** */
530/*
531 * Builds a string out of what the sensor said
532 */
533
534static void ppc_rtas_process_sensor(struct seq_file *m,
535 struct individual_sensor *s, int state, int error, char *loc)
536{
537 /* Defined return vales */
538 const char * key_switch[] = { "Off\t", "Normal\t", "Secure\t",
539 "Maintenance" };
540 const char * enclosure_switch[] = { "Closed", "Open" };
541 const char * lid_status[] = { " ", "Open", "Closed" };
542 const char * power_source[] = { "AC\t", "Battery",
543 "AC & Battery" };
544 const char * battery_remaining[] = { "Very Low", "Low", "Mid", "High" };
545 const char * epow_sensor[] = {
546 "EPOW Reset", "Cooling warning", "Power warning",
547 "System shutdown", "System halt", "EPOW main enclosure",
548 "EPOW power off" };
549 const char * battery_cyclestate[] = { "None", "In progress",
550 "Requested" };
551 const char * battery_charging[] = { "Charging", "Discharching",
552 "No current flow" };
553 const char * ibm_drconnector[] = { "Empty", "Present", "Unusable",
554 "Exchange" };
555
556 int have_strings = 0;
557 int num_states = 0;
558 int temperature = 0;
559 int unknown = 0;
560
561 /* What kind of sensor do we have here? */
562
563 switch (s->token) {
564 case KEY_SWITCH:
565 seq_printf(m, "Key switch:\t");
566 num_states = sizeof(key_switch) / sizeof(char *);
567 if (state < num_states) {
568 seq_printf(m, "%s\t", key_switch[state]);
569 have_strings = 1;
570 }
571 break;
572 case ENCLOSURE_SWITCH:
573 seq_printf(m, "Enclosure switch:\t");
574 num_states = sizeof(enclosure_switch) / sizeof(char *);
575 if (state < num_states) {
576 seq_printf(m, "%s\t",
577 enclosure_switch[state]);
578 have_strings = 1;
579 }
580 break;
581 case THERMAL_SENSOR:
582 seq_printf(m, "Temp. (C/F):\t");
583 temperature = 1;
584 break;
585 case LID_STATUS:
586 seq_printf(m, "Lid status:\t");
587 num_states = sizeof(lid_status) / sizeof(char *);
588 if (state < num_states) {
589 seq_printf(m, "%s\t", lid_status[state]);
590 have_strings = 1;
591 }
592 break;
593 case POWER_SOURCE:
594 seq_printf(m, "Power source:\t");
595 num_states = sizeof(power_source) / sizeof(char *);
596 if (state < num_states) {
597 seq_printf(m, "%s\t",
598 power_source[state]);
599 have_strings = 1;
600 }
601 break;
602 case BATTERY_VOLTAGE:
603 seq_printf(m, "Battery voltage:\t");
604 break;
605 case BATTERY_REMAINING:
606 seq_printf(m, "Battery remaining:\t");
607 num_states = sizeof(battery_remaining) / sizeof(char *);
608 if (state < num_states)
609 {
610 seq_printf(m, "%s\t",
611 battery_remaining[state]);
612 have_strings = 1;
613 }
614 break;
615 case BATTERY_PERCENTAGE:
616 seq_printf(m, "Battery percentage:\t");
617 break;
618 case EPOW_SENSOR:
619 seq_printf(m, "EPOW Sensor:\t");
620 num_states = sizeof(epow_sensor) / sizeof(char *);
621 if (state < num_states) {
622 seq_printf(m, "%s\t", epow_sensor[state]);
623 have_strings = 1;
624 }
625 break;
626 case BATTERY_CYCLESTATE:
627 seq_printf(m, "Battery cyclestate:\t");
628 num_states = sizeof(battery_cyclestate) /
629 sizeof(char *);
630 if (state < num_states) {
631 seq_printf(m, "%s\t",
632 battery_cyclestate[state]);
633 have_strings = 1;
634 }
635 break;
636 case BATTERY_CHARGING:
637 seq_printf(m, "Battery Charging:\t");
638 num_states = sizeof(battery_charging) / sizeof(char *);
639 if (state < num_states) {
640 seq_printf(m, "%s\t",
641 battery_charging[state]);
642 have_strings = 1;
643 }
644 break;
645 case IBM_SURVEILLANCE:
646 seq_printf(m, "Surveillance:\t");
647 break;
648 case IBM_FANRPM:
649 seq_printf(m, "Fan (rpm):\t");
650 break;
651 case IBM_VOLTAGE:
652 seq_printf(m, "Voltage (mv):\t");
653 break;
654 case IBM_DRCONNECTOR:
655 seq_printf(m, "DR connector:\t");
656 num_states = sizeof(ibm_drconnector) / sizeof(char *);
657 if (state < num_states) {
658 seq_printf(m, "%s\t",
659 ibm_drconnector[state]);
660 have_strings = 1;
661 }
662 break;
663 case IBM_POWERSUPPLY:
664 seq_printf(m, "Powersupply:\t");
665 break;
666 default:
667 seq_printf(m, "Unknown sensor (type %d), ignoring it\n",
668 s->token);
669 unknown = 1;
670 have_strings = 1;
671 break;
672 }
673 if (have_strings == 0) {
674 if (temperature) {
675 seq_printf(m, "%4d /%4d\t", state, cel_to_fahr(state));
676 } else
677 seq_printf(m, "%10d\t", state);
678 }
679 if (unknown == 0) {
680 seq_printf(m, "%s\t", ppc_rtas_process_error(error));
681 get_location_code(m, s, loc);
682 }
683}
684
685/* ****************************************************************** */
686
687static void check_location(struct seq_file *m, char *c)
688{
689 switch (c[0]) {
690 case LOC_PLANAR:
691 seq_printf(m, "Planar #%c", c[1]);
692 break;
693 case LOC_CPU:
694 seq_printf(m, "CPU #%c", c[1]);
695 break;
696 case LOC_FAN:
697 seq_printf(m, "Fan #%c", c[1]);
698 break;
699 case LOC_RACKMOUNTED:
700 seq_printf(m, "Rack #%c", c[1]);
701 break;
702 case LOC_VOLTAGE:
703 seq_printf(m, "Voltage #%c", c[1]);
704 break;
705 case LOC_LCD:
706 seq_printf(m, "LCD #%c", c[1]);
707 break;
708 case '.':
709 seq_printf(m, "- %c", c[1]);
710 break;
711 default:
712 seq_printf(m, "Unknown location");
713 break;
714 }
715}
716
717
718/* ****************************************************************** */
719/*
720 * Format:
721 * ${LETTER}${NUMBER}[[-/]${LETTER}${NUMBER} [ ... ] ]
722 * the '.' may be an abbrevation
723 */
724static void check_location_string(struct seq_file *m, char *c)
725{
726 while (*c) {
727 if (isalpha(*c) || *c == '.')
728 check_location(m, c);
729 else if (*c == '/' || *c == '-')
730 seq_printf(m, " at ");
731 c++;
732 }
733}
734
735
736/* ****************************************************************** */
737
738static void get_location_code(struct seq_file *m, struct individual_sensor *s, char *loc)
739{
740 if (!loc || !*loc) {
741 seq_printf(m, "---");/* does not have a location */
742 } else {
743 check_location_string(m, loc);
744 }
745 seq_putc(m, ' ');
746}
747/* ****************************************************************** */
748/* INDICATORS - Tone Frequency */
749/* ****************************************************************** */
750static ssize_t ppc_rtas_tone_freq_write(struct file *file,
751 const char __user *buf, size_t count, loff_t *ppos)
752{
753 unsigned long freq;
754 int error = parse_number(buf, count, &freq);
755 if (error)
756 return error;
757
758 rtas_tone_frequency = freq; /* save it for later */
759 error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
760 TONE_FREQUENCY, 0, freq);
761 if (error)
762 printk(KERN_WARNING "error: setting tone frequency returned: %s\n",
763 ppc_rtas_process_error(error));
764 return count;
765}
766/* ****************************************************************** */
767static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v)
768{
769 seq_printf(m, "%lu\n", rtas_tone_frequency);
770 return 0;
771}
772/* ****************************************************************** */
773/* INDICATORS - Tone Volume */
774/* ****************************************************************** */
775static ssize_t ppc_rtas_tone_volume_write(struct file *file,
776 const char __user *buf, size_t count, loff_t *ppos)
777{
778 unsigned long volume;
779 int error = parse_number(buf, count, &volume);
780 if (error)
781 return error;
782
783 if (volume > 100)
784 volume = 100;
785
786 rtas_tone_volume = volume; /* save it for later */
787 error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
788 TONE_VOLUME, 0, volume);
789 if (error)
790 printk(KERN_WARNING "error: setting tone volume returned: %s\n",
791 ppc_rtas_process_error(error));
792 return count;
793}
794/* ****************************************************************** */
795static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v)
796{
797 seq_printf(m, "%lu\n", rtas_tone_volume);
798 return 0;
799}
800
801#define RMO_READ_BUF_MAX 30
802
803/* RTAS Userspace access */
804static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v)
805{
806 seq_printf(m, "%016lx %x\n", rtas_rmo_buf, RTAS_RMOBUF_MAX);
807 return 0;
808}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-19 02:31:36 -0500