1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
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 | #include <linux/of.h> |
28 | |
29 | #include <linux/uaccess.h> |
30 | #include <asm/processor.h> |
31 | #include <asm/io.h> |
32 | #include <asm/rtas.h> |
33 | #include <asm/machdep.h> /* for ppc_md */ |
34 | #include <asm/time.h> |
35 | |
36 | /* Token for Sensors */ |
37 | #define KEY_SWITCH 0x0001 |
38 | #define ENCLOSURE_SWITCH 0x0002 |
39 | #define THERMAL_SENSOR 0x0003 |
40 | #define LID_STATUS 0x0004 |
41 | #define POWER_SOURCE 0x0005 |
42 | #define BATTERY_VOLTAGE 0x0006 |
43 | #define BATTERY_REMAINING 0x0007 |
44 | #define BATTERY_PERCENTAGE 0x0008 |
45 | #define EPOW_SENSOR 0x0009 |
46 | #define BATTERY_CYCLESTATE 0x000a |
47 | #define BATTERY_CHARGING 0x000b |
48 | |
49 | /* IBM specific sensors */ |
50 | #define IBM_SURVEILLANCE 0x2328 /* 9000 */ |
51 | #define IBM_FANRPM 0x2329 /* 9001 */ |
52 | #define IBM_VOLTAGE 0x232a /* 9002 */ |
53 | #define IBM_DRCONNECTOR 0x232b /* 9003 */ |
54 | #define IBM_POWERSUPPLY 0x232c /* 9004 */ |
55 | |
56 | /* Status return values */ |
57 | #define SENSOR_CRITICAL_HIGH 13 |
58 | #define SENSOR_WARNING_HIGH 12 |
59 | #define SENSOR_NORMAL 11 |
60 | #define SENSOR_WARNING_LOW 10 |
61 | #define SENSOR_CRITICAL_LOW 9 |
62 | #define SENSOR_SUCCESS 0 |
63 | #define SENSOR_HW_ERROR -1 |
64 | #define SENSOR_BUSY -2 |
65 | #define SENSOR_NOT_EXIST -3 |
66 | #define SENSOR_DR_ENTITY -9000 |
67 | |
68 | /* Location Codes */ |
69 | #define LOC_SCSI_DEV_ADDR 'A' |
70 | #define LOC_SCSI_DEV_LOC 'B' |
71 | #define LOC_CPU 'C' |
72 | #define LOC_DISKETTE 'D' |
73 | #define LOC_ETHERNET 'E' |
74 | #define LOC_FAN 'F' |
75 | #define LOC_GRAPHICS 'G' |
76 | /* reserved / not used 'H' */ |
77 | #define LOC_IO_ADAPTER 'I' |
78 | /* reserved / not used 'J' */ |
79 | #define LOC_KEYBOARD 'K' |
80 | #define LOC_LCD 'L' |
81 | #define LOC_MEMORY 'M' |
82 | #define LOC_NV_MEMORY 'N' |
83 | #define LOC_MOUSE 'O' |
84 | #define LOC_PLANAR 'P' |
85 | #define LOC_OTHER_IO 'Q' |
86 | #define LOC_PARALLEL 'R' |
87 | #define LOC_SERIAL 'S' |
88 | #define LOC_DEAD_RING 'T' |
89 | #define LOC_RACKMOUNTED 'U' /* for _u_nit is rack mounted */ |
90 | #define LOC_VOLTAGE 'V' |
91 | #define LOC_SWITCH_ADAPTER 'W' |
92 | #define LOC_OTHER 'X' |
93 | #define LOC_FIRMWARE 'Y' |
94 | #define LOC_SCSI 'Z' |
95 | |
96 | /* Tokens for indicators */ |
97 | #define TONE_FREQUENCY 0x0001 /* 0 - 1000 (HZ)*/ |
98 | #define TONE_VOLUME 0x0002 /* 0 - 100 (%) */ |
99 | #define SYSTEM_POWER_STATE 0x0003 |
100 | #define WARNING_LIGHT 0x0004 |
101 | #define DISK_ACTIVITY_LIGHT 0x0005 |
102 | #define HEX_DISPLAY_UNIT 0x0006 |
103 | #define BATTERY_WARNING_TIME 0x0007 |
104 | #define CONDITION_CYCLE_REQUEST 0x0008 |
105 | #define SURVEILLANCE_INDICATOR 0x2328 /* 9000 */ |
106 | #define DR_ACTION 0x2329 /* 9001 */ |
107 | #define DR_INDICATOR 0x232a /* 9002 */ |
108 | /* 9003 - 9004: Vendor specific */ |
109 | /* 9006 - 9999: Vendor specific */ |
110 | |
111 | /* other */ |
112 | #define MAX_SENSORS 17 /* I only know of 17 sensors */ |
113 | #define MAX_LINELENGTH 256 |
114 | #define SENSOR_PREFIX "ibm,sensor-" |
115 | #define cel_to_fahr(x) ((x*9/5)+32) |
116 | |
117 | struct individual_sensor { |
118 | unsigned int token; |
119 | unsigned int quant; |
120 | }; |
121 | |
122 | struct rtas_sensors { |
123 | struct individual_sensor sensor[MAX_SENSORS]; |
124 | unsigned int quant; |
125 | }; |
126 | |
127 | /* Globals */ |
128 | static struct rtas_sensors sensors; |
129 | static struct device_node *rtas_node = NULL; |
130 | static unsigned long power_on_time = 0; /* Save the time the user set */ |
131 | static char progress_led[MAX_LINELENGTH]; |
132 | |
133 | static unsigned long rtas_tone_frequency = 1000; |
134 | static unsigned long rtas_tone_volume = 0; |
135 | |
136 | /* ****************************************************************** */ |
137 | /* Declarations */ |
138 | static int ppc_rtas_sensors_show(struct seq_file *m, void *v); |
139 | static int ppc_rtas_clock_show(struct seq_file *m, void *v); |
140 | static ssize_t ppc_rtas_clock_write(struct file *file, |
141 | const char __user *buf, size_t count, loff_t *ppos); |
142 | static int ppc_rtas_progress_show(struct seq_file *m, void *v); |
143 | static ssize_t ppc_rtas_progress_write(struct file *file, |
144 | const char __user *buf, size_t count, loff_t *ppos); |
145 | static int ppc_rtas_poweron_show(struct seq_file *m, void *v); |
146 | static ssize_t ppc_rtas_poweron_write(struct file *file, |
147 | const char __user *buf, size_t count, loff_t *ppos); |
148 | |
149 | static ssize_t ppc_rtas_tone_freq_write(struct file *file, |
150 | const char __user *buf, size_t count, loff_t *ppos); |
151 | static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v); |
152 | static ssize_t ppc_rtas_tone_volume_write(struct file *file, |
153 | const char __user *buf, size_t count, loff_t *ppos); |
154 | static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v); |
155 | static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v); |
156 | |
157 | static int poweron_open(struct inode *inode, struct file *file) |
158 | { |
159 | return single_open(file, ppc_rtas_poweron_show, NULL); |
160 | } |
161 | |
162 | static const struct proc_ops ppc_rtas_poweron_proc_ops = { |
163 | .proc_open = poweron_open, |
164 | .proc_read = seq_read, |
165 | .proc_lseek = seq_lseek, |
166 | .proc_write = ppc_rtas_poweron_write, |
167 | .proc_release = single_release, |
168 | }; |
169 | |
170 | static int progress_open(struct inode *inode, struct file *file) |
171 | { |
172 | return single_open(file, ppc_rtas_progress_show, NULL); |
173 | } |
174 | |
175 | static const struct proc_ops ppc_rtas_progress_proc_ops = { |
176 | .proc_open = progress_open, |
177 | .proc_read = seq_read, |
178 | .proc_lseek = seq_lseek, |
179 | .proc_write = ppc_rtas_progress_write, |
180 | .proc_release = single_release, |
181 | }; |
182 | |
183 | static int clock_open(struct inode *inode, struct file *file) |
184 | { |
185 | return single_open(file, ppc_rtas_clock_show, NULL); |
186 | } |
187 | |
188 | static const struct proc_ops ppc_rtas_clock_proc_ops = { |
189 | .proc_open = clock_open, |
190 | .proc_read = seq_read, |
191 | .proc_lseek = seq_lseek, |
192 | .proc_write = ppc_rtas_clock_write, |
193 | .proc_release = single_release, |
194 | }; |
195 | |
196 | static int tone_freq_open(struct inode *inode, struct file *file) |
197 | { |
198 | return single_open(file, ppc_rtas_tone_freq_show, NULL); |
199 | } |
200 | |
201 | static const struct proc_ops ppc_rtas_tone_freq_proc_ops = { |
202 | .proc_open = tone_freq_open, |
203 | .proc_read = seq_read, |
204 | .proc_lseek = seq_lseek, |
205 | .proc_write = ppc_rtas_tone_freq_write, |
206 | .proc_release = single_release, |
207 | }; |
208 | |
209 | static int tone_volume_open(struct inode *inode, struct file *file) |
210 | { |
211 | return single_open(file, ppc_rtas_tone_volume_show, NULL); |
212 | } |
213 | |
214 | static const struct proc_ops ppc_rtas_tone_volume_proc_ops = { |
215 | .proc_open = tone_volume_open, |
216 | .proc_read = seq_read, |
217 | .proc_lseek = seq_lseek, |
218 | .proc_write = ppc_rtas_tone_volume_write, |
219 | .proc_release = single_release, |
220 | }; |
221 | |
222 | static int ppc_rtas_find_all_sensors(void); |
223 | static void ppc_rtas_process_sensor(struct seq_file *m, |
224 | struct individual_sensor *s, int state, int error, const char *loc); |
225 | static char *ppc_rtas_process_error(int error); |
226 | static void get_location_code(struct seq_file *m, |
227 | struct individual_sensor *s, const char *loc); |
228 | static void check_location_string(struct seq_file *m, const char *c); |
229 | static void check_location(struct seq_file *m, const char *c); |
230 | |
231 | static int __init proc_rtas_init(void) |
232 | { |
233 | if (!machine_is(pseries)) |
234 | return -ENODEV; |
235 | |
236 | rtas_node = of_find_node_by_name(NULL, name: "rtas" ); |
237 | if (rtas_node == NULL) |
238 | return -ENODEV; |
239 | |
240 | proc_create(name: "powerpc/rtas/progress" , mode: 0644, NULL, |
241 | proc_ops: &ppc_rtas_progress_proc_ops); |
242 | proc_create(name: "powerpc/rtas/clock" , mode: 0644, NULL, |
243 | proc_ops: &ppc_rtas_clock_proc_ops); |
244 | proc_create(name: "powerpc/rtas/poweron" , mode: 0644, NULL, |
245 | proc_ops: &ppc_rtas_poweron_proc_ops); |
246 | proc_create_single("powerpc/rtas/sensors" , 0444, NULL, |
247 | ppc_rtas_sensors_show); |
248 | proc_create(name: "powerpc/rtas/frequency" , mode: 0644, NULL, |
249 | proc_ops: &ppc_rtas_tone_freq_proc_ops); |
250 | proc_create(name: "powerpc/rtas/volume" , mode: 0644, NULL, |
251 | proc_ops: &ppc_rtas_tone_volume_proc_ops); |
252 | proc_create_single("powerpc/rtas/rmo_buffer" , 0400, NULL, |
253 | ppc_rtas_rmo_buf_show); |
254 | return 0; |
255 | } |
256 | |
257 | __initcall(proc_rtas_init); |
258 | |
259 | static int parse_number(const char __user *p, size_t count, u64 *val) |
260 | { |
261 | char buf[40]; |
262 | |
263 | if (count > 39) |
264 | return -EINVAL; |
265 | |
266 | if (copy_from_user(to: buf, from: p, n: count)) |
267 | return -EFAULT; |
268 | |
269 | buf[count] = 0; |
270 | |
271 | return kstrtoull(s: buf, base: 10, res: val); |
272 | } |
273 | |
274 | /* ****************************************************************** */ |
275 | /* POWER-ON-TIME */ |
276 | /* ****************************************************************** */ |
277 | static ssize_t ppc_rtas_poweron_write(struct file *file, |
278 | const char __user *buf, size_t count, loff_t *ppos) |
279 | { |
280 | struct rtc_time tm; |
281 | time64_t nowtime; |
282 | int error = parse_number(p: buf, count, val: &nowtime); |
283 | if (error) |
284 | return error; |
285 | |
286 | power_on_time = nowtime; /* save the time */ |
287 | |
288 | rtc_time64_to_tm(time: nowtime, tm: &tm); |
289 | |
290 | error = rtas_call(rtas_function_token(RTAS_FN_SET_TIME_FOR_POWER_ON), 7, 1, NULL, |
291 | tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, |
292 | tm.tm_hour, tm.tm_min, tm.tm_sec, 0 /* nano */); |
293 | if (error) |
294 | printk(KERN_WARNING "error: setting poweron time returned: %s\n" , |
295 | ppc_rtas_process_error(error)); |
296 | return count; |
297 | } |
298 | /* ****************************************************************** */ |
299 | static int ppc_rtas_poweron_show(struct seq_file *m, void *v) |
300 | { |
301 | if (power_on_time == 0) |
302 | seq_printf(m, fmt: "Power on time not set\n" ); |
303 | else |
304 | seq_printf(m, fmt: "%lu\n" ,power_on_time); |
305 | return 0; |
306 | } |
307 | |
308 | /* ****************************************************************** */ |
309 | /* PROGRESS */ |
310 | /* ****************************************************************** */ |
311 | static ssize_t ppc_rtas_progress_write(struct file *file, |
312 | const char __user *buf, size_t count, loff_t *ppos) |
313 | { |
314 | unsigned long hex; |
315 | |
316 | if (count >= MAX_LINELENGTH) |
317 | count = MAX_LINELENGTH -1; |
318 | if (copy_from_user(to: progress_led, from: buf, n: count)) { /* save the string */ |
319 | return -EFAULT; |
320 | } |
321 | progress_led[count] = 0; |
322 | |
323 | /* Lets see if the user passed hexdigits */ |
324 | hex = simple_strtoul(progress_led, NULL, 10); |
325 | |
326 | rtas_progress ((char *)progress_led, hex); |
327 | return count; |
328 | |
329 | /* clear the line */ |
330 | /* rtas_progress(" ", 0xffff);*/ |
331 | } |
332 | /* ****************************************************************** */ |
333 | static int ppc_rtas_progress_show(struct seq_file *m, void *v) |
334 | { |
335 | if (progress_led[0]) |
336 | seq_printf(m, fmt: "%s\n" , progress_led); |
337 | return 0; |
338 | } |
339 | |
340 | /* ****************************************************************** */ |
341 | /* CLOCK */ |
342 | /* ****************************************************************** */ |
343 | static ssize_t ppc_rtas_clock_write(struct file *file, |
344 | const char __user *buf, size_t count, loff_t *ppos) |
345 | { |
346 | struct rtc_time tm; |
347 | time64_t nowtime; |
348 | int error = parse_number(p: buf, count, val: &nowtime); |
349 | if (error) |
350 | return error; |
351 | |
352 | rtc_time64_to_tm(time: nowtime, tm: &tm); |
353 | error = rtas_call(rtas_function_token(RTAS_FN_SET_TIME_OF_DAY), 7, 1, NULL, |
354 | tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, |
355 | tm.tm_hour, tm.tm_min, tm.tm_sec, 0); |
356 | if (error) |
357 | printk(KERN_WARNING "error: setting the clock returned: %s\n" , |
358 | ppc_rtas_process_error(error)); |
359 | return count; |
360 | } |
361 | /* ****************************************************************** */ |
362 | static int ppc_rtas_clock_show(struct seq_file *m, void *v) |
363 | { |
364 | int ret[8]; |
365 | int error = rtas_call(rtas_function_token(RTAS_FN_GET_TIME_OF_DAY), 0, 8, ret); |
366 | |
367 | if (error) { |
368 | printk(KERN_WARNING "error: reading the clock returned: %s\n" , |
369 | ppc_rtas_process_error(error)); |
370 | seq_printf(m, fmt: "0" ); |
371 | } else { |
372 | unsigned int year, mon, day, hour, min, sec; |
373 | year = ret[0]; mon = ret[1]; day = ret[2]; |
374 | hour = ret[3]; min = ret[4]; sec = ret[5]; |
375 | seq_printf(m, fmt: "%lld\n" , |
376 | mktime64(year, mon, day, hour, min, sec)); |
377 | } |
378 | return 0; |
379 | } |
380 | |
381 | /* ****************************************************************** */ |
382 | /* SENSOR STUFF */ |
383 | /* ****************************************************************** */ |
384 | static int ppc_rtas_sensors_show(struct seq_file *m, void *v) |
385 | { |
386 | int i,j; |
387 | int state, error; |
388 | int get_sensor_state = rtas_function_token(RTAS_FN_GET_SENSOR_STATE); |
389 | |
390 | seq_printf(m, fmt: "RTAS (RunTime Abstraction Services) Sensor Information\n" ); |
391 | seq_printf(m, fmt: "Sensor\t\tValue\t\tCondition\tLocation\n" ); |
392 | seq_printf(m, fmt: "********************************************************\n" ); |
393 | |
394 | if (ppc_rtas_find_all_sensors() != 0) { |
395 | seq_printf(m, fmt: "\nNo sensors are available\n" ); |
396 | return 0; |
397 | } |
398 | |
399 | for (i=0; i<sensors.quant; i++) { |
400 | struct individual_sensor *p = &sensors.sensor[i]; |
401 | char rstr[64]; |
402 | const char *loc; |
403 | int llen, offs; |
404 | |
405 | sprintf (buf: rstr, SENSOR_PREFIX"%04d" , p->token); |
406 | loc = of_get_property(node: rtas_node, name: rstr, lenp: &llen); |
407 | |
408 | /* A sensor may have multiple instances */ |
409 | for (j = 0, offs = 0; j <= p->quant; j++) { |
410 | error = rtas_call(get_sensor_state, 2, 2, &state, |
411 | p->token, j); |
412 | |
413 | ppc_rtas_process_sensor(m, s: p, state, error, loc); |
414 | seq_putc(m, c: '\n'); |
415 | if (loc) { |
416 | offs += strlen(loc) + 1; |
417 | loc += strlen(loc) + 1; |
418 | if (offs >= llen) |
419 | loc = NULL; |
420 | } |
421 | } |
422 | } |
423 | return 0; |
424 | } |
425 | |
426 | /* ****************************************************************** */ |
427 | |
428 | static int ppc_rtas_find_all_sensors(void) |
429 | { |
430 | const unsigned int *utmp; |
431 | int len, i; |
432 | |
433 | utmp = of_get_property(node: rtas_node, name: "rtas-sensors" , lenp: &len); |
434 | if (utmp == NULL) { |
435 | printk (KERN_ERR "error: could not get rtas-sensors\n" ); |
436 | return 1; |
437 | } |
438 | |
439 | sensors.quant = len / 8; /* int + int */ |
440 | |
441 | for (i=0; i<sensors.quant; i++) { |
442 | sensors.sensor[i].token = *utmp++; |
443 | sensors.sensor[i].quant = *utmp++; |
444 | } |
445 | return 0; |
446 | } |
447 | |
448 | /* ****************************************************************** */ |
449 | /* |
450 | * Builds a string of what rtas returned |
451 | */ |
452 | static char *ppc_rtas_process_error(int error) |
453 | { |
454 | switch (error) { |
455 | case SENSOR_CRITICAL_HIGH: |
456 | return "(critical high)" ; |
457 | case SENSOR_WARNING_HIGH: |
458 | return "(warning high)" ; |
459 | case SENSOR_NORMAL: |
460 | return "(normal)" ; |
461 | case SENSOR_WARNING_LOW: |
462 | return "(warning low)" ; |
463 | case SENSOR_CRITICAL_LOW: |
464 | return "(critical low)" ; |
465 | case SENSOR_SUCCESS: |
466 | return "(read ok)" ; |
467 | case SENSOR_HW_ERROR: |
468 | return "(hardware error)" ; |
469 | case SENSOR_BUSY: |
470 | return "(busy)" ; |
471 | case SENSOR_NOT_EXIST: |
472 | return "(non existent)" ; |
473 | case SENSOR_DR_ENTITY: |
474 | return "(dr entity removed)" ; |
475 | default: |
476 | return "(UNKNOWN)" ; |
477 | } |
478 | } |
479 | |
480 | /* ****************************************************************** */ |
481 | /* |
482 | * Builds a string out of what the sensor said |
483 | */ |
484 | |
485 | static void ppc_rtas_process_sensor(struct seq_file *m, |
486 | struct individual_sensor *s, int state, int error, const char *loc) |
487 | { |
488 | /* Defined return vales */ |
489 | const char * key_switch[] = { "Off\t" , "Normal\t" , "Secure\t" , |
490 | "Maintenance" }; |
491 | const char * enclosure_switch[] = { "Closed" , "Open" }; |
492 | const char * lid_status[] = { " " , "Open" , "Closed" }; |
493 | const char * power_source[] = { "AC\t" , "Battery" , |
494 | "AC & Battery" }; |
495 | const char * battery_remaining[] = { "Very Low" , "Low" , "Mid" , "High" }; |
496 | const char * epow_sensor[] = { |
497 | "EPOW Reset" , "Cooling warning" , "Power warning" , |
498 | "System shutdown" , "System halt" , "EPOW main enclosure" , |
499 | "EPOW power off" }; |
500 | const char * battery_cyclestate[] = { "None" , "In progress" , |
501 | "Requested" }; |
502 | const char * battery_charging[] = { "Charging" , "Discharging" , |
503 | "No current flow" }; |
504 | const char * ibm_drconnector[] = { "Empty" , "Present" , "Unusable" , |
505 | "Exchange" }; |
506 | |
507 | int have_strings = 0; |
508 | int num_states = 0; |
509 | int temperature = 0; |
510 | int unknown = 0; |
511 | |
512 | /* What kind of sensor do we have here? */ |
513 | |
514 | switch (s->token) { |
515 | case KEY_SWITCH: |
516 | seq_printf(m, fmt: "Key switch:\t" ); |
517 | num_states = sizeof(key_switch) / sizeof(char *); |
518 | if (state < num_states) { |
519 | seq_printf(m, fmt: "%s\t" , key_switch[state]); |
520 | have_strings = 1; |
521 | } |
522 | break; |
523 | case ENCLOSURE_SWITCH: |
524 | seq_printf(m, fmt: "Enclosure switch:\t" ); |
525 | num_states = sizeof(enclosure_switch) / sizeof(char *); |
526 | if (state < num_states) { |
527 | seq_printf(m, fmt: "%s\t" , |
528 | enclosure_switch[state]); |
529 | have_strings = 1; |
530 | } |
531 | break; |
532 | case THERMAL_SENSOR: |
533 | seq_printf(m, fmt: "Temp. (C/F):\t" ); |
534 | temperature = 1; |
535 | break; |
536 | case LID_STATUS: |
537 | seq_printf(m, fmt: "Lid status:\t" ); |
538 | num_states = sizeof(lid_status) / sizeof(char *); |
539 | if (state < num_states) { |
540 | seq_printf(m, fmt: "%s\t" , lid_status[state]); |
541 | have_strings = 1; |
542 | } |
543 | break; |
544 | case POWER_SOURCE: |
545 | seq_printf(m, fmt: "Power source:\t" ); |
546 | num_states = sizeof(power_source) / sizeof(char *); |
547 | if (state < num_states) { |
548 | seq_printf(m, fmt: "%s\t" , |
549 | power_source[state]); |
550 | have_strings = 1; |
551 | } |
552 | break; |
553 | case BATTERY_VOLTAGE: |
554 | seq_printf(m, fmt: "Battery voltage:\t" ); |
555 | break; |
556 | case BATTERY_REMAINING: |
557 | seq_printf(m, fmt: "Battery remaining:\t" ); |
558 | num_states = sizeof(battery_remaining) / sizeof(char *); |
559 | if (state < num_states) |
560 | { |
561 | seq_printf(m, fmt: "%s\t" , |
562 | battery_remaining[state]); |
563 | have_strings = 1; |
564 | } |
565 | break; |
566 | case BATTERY_PERCENTAGE: |
567 | seq_printf(m, fmt: "Battery percentage:\t" ); |
568 | break; |
569 | case EPOW_SENSOR: |
570 | seq_printf(m, fmt: "EPOW Sensor:\t" ); |
571 | num_states = sizeof(epow_sensor) / sizeof(char *); |
572 | if (state < num_states) { |
573 | seq_printf(m, fmt: "%s\t" , epow_sensor[state]); |
574 | have_strings = 1; |
575 | } |
576 | break; |
577 | case BATTERY_CYCLESTATE: |
578 | seq_printf(m, fmt: "Battery cyclestate:\t" ); |
579 | num_states = sizeof(battery_cyclestate) / |
580 | sizeof(char *); |
581 | if (state < num_states) { |
582 | seq_printf(m, fmt: "%s\t" , |
583 | battery_cyclestate[state]); |
584 | have_strings = 1; |
585 | } |
586 | break; |
587 | case BATTERY_CHARGING: |
588 | seq_printf(m, fmt: "Battery Charging:\t" ); |
589 | num_states = sizeof(battery_charging) / sizeof(char *); |
590 | if (state < num_states) { |
591 | seq_printf(m, fmt: "%s\t" , |
592 | battery_charging[state]); |
593 | have_strings = 1; |
594 | } |
595 | break; |
596 | case IBM_SURVEILLANCE: |
597 | seq_printf(m, fmt: "Surveillance:\t" ); |
598 | break; |
599 | case IBM_FANRPM: |
600 | seq_printf(m, fmt: "Fan (rpm):\t" ); |
601 | break; |
602 | case IBM_VOLTAGE: |
603 | seq_printf(m, fmt: "Voltage (mv):\t" ); |
604 | break; |
605 | case IBM_DRCONNECTOR: |
606 | seq_printf(m, fmt: "DR connector:\t" ); |
607 | num_states = sizeof(ibm_drconnector) / sizeof(char *); |
608 | if (state < num_states) { |
609 | seq_printf(m, fmt: "%s\t" , |
610 | ibm_drconnector[state]); |
611 | have_strings = 1; |
612 | } |
613 | break; |
614 | case IBM_POWERSUPPLY: |
615 | seq_printf(m, fmt: "Powersupply:\t" ); |
616 | break; |
617 | default: |
618 | seq_printf(m, fmt: "Unknown sensor (type %d), ignoring it\n" , |
619 | s->token); |
620 | unknown = 1; |
621 | have_strings = 1; |
622 | break; |
623 | } |
624 | if (have_strings == 0) { |
625 | if (temperature) { |
626 | seq_printf(m, fmt: "%4d /%4d\t" , state, cel_to_fahr(state)); |
627 | } else |
628 | seq_printf(m, fmt: "%10d\t" , state); |
629 | } |
630 | if (unknown == 0) { |
631 | seq_printf(m, fmt: "%s\t" , ppc_rtas_process_error(error)); |
632 | get_location_code(m, s, loc); |
633 | } |
634 | } |
635 | |
636 | /* ****************************************************************** */ |
637 | |
638 | static void check_location(struct seq_file *m, const char *c) |
639 | { |
640 | switch (c[0]) { |
641 | case LOC_PLANAR: |
642 | seq_printf(m, fmt: "Planar #%c" , c[1]); |
643 | break; |
644 | case LOC_CPU: |
645 | seq_printf(m, fmt: "CPU #%c" , c[1]); |
646 | break; |
647 | case LOC_FAN: |
648 | seq_printf(m, fmt: "Fan #%c" , c[1]); |
649 | break; |
650 | case LOC_RACKMOUNTED: |
651 | seq_printf(m, fmt: "Rack #%c" , c[1]); |
652 | break; |
653 | case LOC_VOLTAGE: |
654 | seq_printf(m, fmt: "Voltage #%c" , c[1]); |
655 | break; |
656 | case LOC_LCD: |
657 | seq_printf(m, fmt: "LCD #%c" , c[1]); |
658 | break; |
659 | case '.': |
660 | seq_printf(m, fmt: "- %c" , c[1]); |
661 | break; |
662 | default: |
663 | seq_printf(m, fmt: "Unknown location" ); |
664 | break; |
665 | } |
666 | } |
667 | |
668 | |
669 | /* ****************************************************************** */ |
670 | /* |
671 | * Format: |
672 | * ${LETTER}${NUMBER}[[-/]${LETTER}${NUMBER} [ ... ] ] |
673 | * the '.' may be an abbreviation |
674 | */ |
675 | static void check_location_string(struct seq_file *m, const char *c) |
676 | { |
677 | while (*c) { |
678 | if (isalpha(*c) || *c == '.') |
679 | check_location(m, c); |
680 | else if (*c == '/' || *c == '-') |
681 | seq_printf(m, fmt: " at " ); |
682 | c++; |
683 | } |
684 | } |
685 | |
686 | |
687 | /* ****************************************************************** */ |
688 | |
689 | static void get_location_code(struct seq_file *m, struct individual_sensor *s, |
690 | const char *loc) |
691 | { |
692 | if (!loc || !*loc) { |
693 | seq_printf(m, fmt: "---" );/* does not have a location */ |
694 | } else { |
695 | check_location_string(m, c: loc); |
696 | } |
697 | seq_putc(m, c: ' '); |
698 | } |
699 | /* ****************************************************************** */ |
700 | /* INDICATORS - Tone Frequency */ |
701 | /* ****************************************************************** */ |
702 | static ssize_t ppc_rtas_tone_freq_write(struct file *file, |
703 | const char __user *buf, size_t count, loff_t *ppos) |
704 | { |
705 | u64 freq; |
706 | int error = parse_number(p: buf, count, val: &freq); |
707 | if (error) |
708 | return error; |
709 | |
710 | rtas_tone_frequency = freq; /* save it for later */ |
711 | error = rtas_call(rtas_function_token(RTAS_FN_SET_INDICATOR), 3, 1, NULL, |
712 | TONE_FREQUENCY, 0, freq); |
713 | if (error) |
714 | printk(KERN_WARNING "error: setting tone frequency returned: %s\n" , |
715 | ppc_rtas_process_error(error)); |
716 | return count; |
717 | } |
718 | /* ****************************************************************** */ |
719 | static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v) |
720 | { |
721 | seq_printf(m, fmt: "%lu\n" , rtas_tone_frequency); |
722 | return 0; |
723 | } |
724 | /* ****************************************************************** */ |
725 | /* INDICATORS - Tone Volume */ |
726 | /* ****************************************************************** */ |
727 | static ssize_t ppc_rtas_tone_volume_write(struct file *file, |
728 | const char __user *buf, size_t count, loff_t *ppos) |
729 | { |
730 | u64 volume; |
731 | int error = parse_number(p: buf, count, val: &volume); |
732 | if (error) |
733 | return error; |
734 | |
735 | if (volume > 100) |
736 | volume = 100; |
737 | |
738 | rtas_tone_volume = volume; /* save it for later */ |
739 | error = rtas_call(rtas_function_token(RTAS_FN_SET_INDICATOR), 3, 1, NULL, |
740 | TONE_VOLUME, 0, volume); |
741 | if (error) |
742 | printk(KERN_WARNING "error: setting tone volume returned: %s\n" , |
743 | ppc_rtas_process_error(error)); |
744 | return count; |
745 | } |
746 | /* ****************************************************************** */ |
747 | static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v) |
748 | { |
749 | seq_printf(m, fmt: "%lu\n" , rtas_tone_volume); |
750 | return 0; |
751 | } |
752 | |
753 | /** |
754 | * ppc_rtas_rmo_buf_show() - Describe RTAS-addressable region for user space. |
755 | * @m: seq_file output target. |
756 | * @v: Unused. |
757 | * |
758 | * Base + size description of a range of RTAS-addressable memory set |
759 | * aside for user space to use as work area(s) for certain RTAS |
760 | * functions. User space accesses this region via /dev/mem. Apart from |
761 | * security policies, the kernel does not arbitrate or serialize |
762 | * access to this region, and user space must ensure that concurrent |
763 | * users do not interfere with each other. |
764 | */ |
765 | static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v) |
766 | { |
767 | seq_printf(m, fmt: "%016lx %x\n" , rtas_rmo_buf, RTAS_USER_REGION_SIZE); |
768 | return 0; |
769 | } |
770 | |