aboutsummaryrefslogtreecommitdiffstats
path: root/arch/ppc64
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ppc64')
-rw-r--r--arch/ppc64/kernel/Makefile5
-rw-r--r--arch/ppc64/kernel/pci_dn.c5
-rw-r--r--arch/ppc64/kernel/rtas-proc.c808
-rw-r--r--arch/ppc64/kernel/rtas_flash.c725
-rw-r--r--arch/ppc64/kernel/rtasd.c527
-rw-r--r--arch/ppc64/kernel/signal.c581
6 files changed, 4 insertions, 2647 deletions
diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile
index 990df0905c87..430cb3900a07 100644
--- a/arch/ppc64/kernel/Makefile
+++ b/arch/ppc64/kernel/Makefile
@@ -12,7 +12,6 @@ obj-y := misc.o prom.o
12endif 12endif
13 13
14obj-y += irq.o idle.o dma.o \ 14obj-y += irq.o idle.o dma.o \
15 signal.o \
16 align.o pacaData.o \ 15 align.o pacaData.o \
17 udbg.o ioctl32.o \ 16 udbg.o ioctl32.o \
18 rtc.o \ 17 rtc.o \
@@ -29,19 +28,17 @@ ifneq ($(CONFIG_PPC_MERGE),y)
29obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o 28obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
30endif 29endif
31 30
32obj-$(CONFIG_PPC_PSERIES) += rtasd.o udbg_16550.o 31obj-$(CONFIG_PPC_PSERIES) += udbg_16550.o
33 32
34obj-$(CONFIG_KEXEC) += machine_kexec.o 33obj-$(CONFIG_KEXEC) += machine_kexec.o
35obj-$(CONFIG_EEH) += eeh.o 34obj-$(CONFIG_EEH) += eeh.o
36obj-$(CONFIG_PROC_FS) += proc_ppc64.o 35obj-$(CONFIG_PROC_FS) += proc_ppc64.o
37obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o
38obj-$(CONFIG_SMP) += smp.o 36obj-$(CONFIG_SMP) += smp.o
39obj-$(CONFIG_MODULES) += module.o 37obj-$(CONFIG_MODULES) += module.o
40ifneq ($(CONFIG_PPC_MERGE),y) 38ifneq ($(CONFIG_PPC_MERGE),y)
41obj-$(CONFIG_MODULES) += ppc_ksyms.o 39obj-$(CONFIG_MODULES) += ppc_ksyms.o
42endif 40endif
43obj-$(CONFIG_PPC_RTAS) += rtas_pci.o 41obj-$(CONFIG_PPC_RTAS) += rtas_pci.o
44obj-$(CONFIG_RTAS_PROC) += rtas-proc.o
45obj-$(CONFIG_SCANLOG) += scanlog.o 42obj-$(CONFIG_SCANLOG) += scanlog.o
46obj-$(CONFIG_LPARCFG) += lparcfg.o 43obj-$(CONFIG_LPARCFG) += lparcfg.o
47obj-$(CONFIG_HVC_CONSOLE) += hvconsole.o 44obj-$(CONFIG_HVC_CONSOLE) += hvconsole.o
diff --git a/arch/ppc64/kernel/pci_dn.c b/arch/ppc64/kernel/pci_dn.c
index 493bbe43f5b4..1a443a7ada4c 100644
--- a/arch/ppc64/kernel/pci_dn.c
+++ b/arch/ppc64/kernel/pci_dn.c
@@ -181,13 +181,14 @@ EXPORT_SYMBOL(fetch_dev_dn);
181static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node) 181static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
182{ 182{
183 struct device_node *np = node; 183 struct device_node *np = node;
184 struct pci_dn *pci; 184 struct pci_dn *pci = NULL;
185 int err = NOTIFY_OK; 185 int err = NOTIFY_OK;
186 186
187 switch (action) { 187 switch (action) {
188 case PSERIES_RECONFIG_ADD: 188 case PSERIES_RECONFIG_ADD:
189 pci = np->parent->data; 189 pci = np->parent->data;
190 update_dn_pci_info(np, pci->phb); 190 if (pci)
191 update_dn_pci_info(np, pci->phb);
191 break; 192 break;
192 default: 193 default:
193 err = NOTIFY_DONE; 194 err = NOTIFY_DONE;
diff --git a/arch/ppc64/kernel/rtas-proc.c b/arch/ppc64/kernel/rtas-proc.c
deleted file mode 100644
index 5bdd5b079d96..000000000000
--- a/arch/ppc64/kernel/rtas-proc.c
+++ /dev/null
@@ -1,808 +0,0 @@
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}
diff --git a/arch/ppc64/kernel/rtas_flash.c b/arch/ppc64/kernel/rtas_flash.c
deleted file mode 100644
index 923e2e201a70..000000000000
--- a/arch/ppc64/kernel/rtas_flash.c
+++ /dev/null
@@ -1,725 +0,0 @@
1/*
2 * c 2001 PPC 64 Team, IBM Corp
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 * /proc/ppc64/rtas/firmware_flash interface
10 *
11 * This file implements a firmware_flash interface to pump a firmware
12 * image into the kernel. At reboot time rtas_restart() will see the
13 * firmware image and flash it as it reboots (see rtas.c).
14 */
15
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/proc_fs.h>
19#include <asm/delay.h>
20#include <asm/uaccess.h>
21#include <asm/rtas.h>
22
23#define MODULE_VERS "1.0"
24#define MODULE_NAME "rtas_flash"
25
26#define FIRMWARE_FLASH_NAME "firmware_flash"
27#define FIRMWARE_UPDATE_NAME "firmware_update"
28#define MANAGE_FLASH_NAME "manage_flash"
29#define VALIDATE_FLASH_NAME "validate_flash"
30
31/* General RTAS Status Codes */
32#define RTAS_RC_SUCCESS 0
33#define RTAS_RC_HW_ERR -1
34#define RTAS_RC_BUSY -2
35
36/* Flash image status values */
37#define FLASH_AUTH -9002 /* RTAS Not Service Authority Partition */
38#define FLASH_NO_OP -1099 /* No operation initiated by user */
39#define FLASH_IMG_SHORT -1005 /* Flash image shorter than expected */
40#define FLASH_IMG_BAD_LEN -1004 /* Bad length value in flash list block */
41#define FLASH_IMG_NULL_DATA -1003 /* Bad data value in flash list block */
42#define FLASH_IMG_READY 0 /* Firmware img ready for flash on reboot */
43
44/* Manage image status values */
45#define MANAGE_AUTH -9002 /* RTAS Not Service Authority Partition */
46#define MANAGE_ACTIVE_ERR -9001 /* RTAS Cannot Overwrite Active Img */
47#define MANAGE_NO_OP -1099 /* No operation initiated by user */
48#define MANAGE_PARAM_ERR -3 /* RTAS Parameter Error */
49#define MANAGE_HW_ERR -1 /* RTAS Hardware Error */
50
51/* Validate image status values */
52#define VALIDATE_AUTH -9002 /* RTAS Not Service Authority Partition */
53#define VALIDATE_NO_OP -1099 /* No operation initiated by the user */
54#define VALIDATE_INCOMPLETE -1002 /* User copied < VALIDATE_BUF_SIZE */
55#define VALIDATE_READY -1001 /* Firmware image ready for validation */
56#define VALIDATE_PARAM_ERR -3 /* RTAS Parameter Error */
57#define VALIDATE_HW_ERR -1 /* RTAS Hardware Error */
58#define VALIDATE_TMP_UPDATE 0 /* Validate Return Status */
59#define VALIDATE_FLASH_AUTH 1 /* Validate Return Status */
60#define VALIDATE_INVALID_IMG 2 /* Validate Return Status */
61#define VALIDATE_CUR_UNKNOWN 3 /* Validate Return Status */
62#define VALIDATE_TMP_COMMIT_DL 4 /* Validate Return Status */
63#define VALIDATE_TMP_COMMIT 5 /* Validate Return Status */
64#define VALIDATE_TMP_UPDATE_DL 6 /* Validate Return Status */
65
66/* ibm,manage-flash-image operation tokens */
67#define RTAS_REJECT_TMP_IMG 0
68#define RTAS_COMMIT_TMP_IMG 1
69
70/* Array sizes */
71#define VALIDATE_BUF_SIZE 4096
72#define RTAS_MSG_MAXLEN 64
73
74/* Local copy of the flash block list.
75 * We only allow one open of the flash proc file and create this
76 * list as we go. This list will be put in the kernel's
77 * rtas_firmware_flash_list global var once it is fully read.
78 *
79 * For convenience as we build the list we use virtual addrs,
80 * we do not fill in the version number, and the length field
81 * is treated as the number of entries currently in the block
82 * (i.e. not a byte count). This is all fixed on release.
83 */
84
85/* Status int must be first member of struct */
86struct rtas_update_flash_t
87{
88 int status; /* Flash update status */
89 struct flash_block_list *flist; /* Local copy of flash block list */
90};
91
92/* Status int must be first member of struct */
93struct rtas_manage_flash_t
94{
95 int status; /* Returned status */
96 unsigned int op; /* Reject or commit image */
97};
98
99/* Status int must be first member of struct */
100struct rtas_validate_flash_t
101{
102 int status; /* Returned status */
103 char buf[VALIDATE_BUF_SIZE]; /* Candidate image buffer */
104 unsigned int buf_size; /* Size of image buf */
105 unsigned int update_results; /* Update results token */
106};
107
108static DEFINE_SPINLOCK(flash_file_open_lock);
109static struct proc_dir_entry *firmware_flash_pde;
110static struct proc_dir_entry *firmware_update_pde;
111static struct proc_dir_entry *validate_pde;
112static struct proc_dir_entry *manage_pde;
113
114/* Do simple sanity checks on the flash image. */
115static int flash_list_valid(struct flash_block_list *flist)
116{
117 struct flash_block_list *f;
118 int i;
119 unsigned long block_size, image_size;
120
121 /* Paranoid self test here. We also collect the image size. */
122 image_size = 0;
123 for (f = flist; f; f = f->next) {
124 for (i = 0; i < f->num_blocks; i++) {
125 if (f->blocks[i].data == NULL) {
126 return FLASH_IMG_NULL_DATA;
127 }
128 block_size = f->blocks[i].length;
129 if (block_size <= 0 || block_size > PAGE_SIZE) {
130 return FLASH_IMG_BAD_LEN;
131 }
132 image_size += block_size;
133 }
134 }
135
136 if (image_size < (256 << 10)) {
137 if (image_size < 2)
138 return FLASH_NO_OP;
139 }
140
141 printk(KERN_INFO "FLASH: flash image with %ld bytes stored for hardware flash on reboot\n", image_size);
142
143 return FLASH_IMG_READY;
144}
145
146static void free_flash_list(struct flash_block_list *f)
147{
148 struct flash_block_list *next;
149 int i;
150
151 while (f) {
152 for (i = 0; i < f->num_blocks; i++)
153 free_page((unsigned long)(f->blocks[i].data));
154 next = f->next;
155 free_page((unsigned long)f);
156 f = next;
157 }
158}
159
160static int rtas_flash_release(struct inode *inode, struct file *file)
161{
162 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
163 struct rtas_update_flash_t *uf;
164
165 uf = (struct rtas_update_flash_t *) dp->data;
166 if (uf->flist) {
167 /* File was opened in write mode for a new flash attempt */
168 /* Clear saved list */
169 if (rtas_firmware_flash_list.next) {
170 free_flash_list(rtas_firmware_flash_list.next);
171 rtas_firmware_flash_list.next = NULL;
172 }
173
174 if (uf->status != FLASH_AUTH)
175 uf->status = flash_list_valid(uf->flist);
176
177 if (uf->status == FLASH_IMG_READY)
178 rtas_firmware_flash_list.next = uf->flist;
179 else
180 free_flash_list(uf->flist);
181
182 uf->flist = NULL;
183 }
184
185 atomic_dec(&dp->count);
186 return 0;
187}
188
189static void get_flash_status_msg(int status, char *buf)
190{
191 char *msg;
192
193 switch (status) {
194 case FLASH_AUTH:
195 msg = "error: this partition does not have service authority\n";
196 break;
197 case FLASH_NO_OP:
198 msg = "info: no firmware image for flash\n";
199 break;
200 case FLASH_IMG_SHORT:
201 msg = "error: flash image short\n";
202 break;
203 case FLASH_IMG_BAD_LEN:
204 msg = "error: internal error bad length\n";
205 break;
206 case FLASH_IMG_NULL_DATA:
207 msg = "error: internal error null data\n";
208 break;
209 case FLASH_IMG_READY:
210 msg = "ready: firmware image ready for flash on reboot\n";
211 break;
212 default:
213 sprintf(buf, "error: unexpected status value %d\n", status);
214 return;
215 }
216
217 strcpy(buf, msg);
218}
219
220/* Reading the proc file will show status (not the firmware contents) */
221static ssize_t rtas_flash_read(struct file *file, char __user *buf,
222 size_t count, loff_t *ppos)
223{
224 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
225 struct rtas_update_flash_t *uf;
226 char msg[RTAS_MSG_MAXLEN];
227 int msglen;
228
229 uf = (struct rtas_update_flash_t *) dp->data;
230
231 if (!strcmp(dp->name, FIRMWARE_FLASH_NAME)) {
232 get_flash_status_msg(uf->status, msg);
233 } else { /* FIRMWARE_UPDATE_NAME */
234 sprintf(msg, "%d\n", uf->status);
235 }
236 msglen = strlen(msg);
237 if (msglen > count)
238 msglen = count;
239
240 if (ppos && *ppos != 0)
241 return 0; /* be cheap */
242
243 if (!access_ok(VERIFY_WRITE, buf, msglen))
244 return -EINVAL;
245
246 if (copy_to_user(buf, msg, msglen))
247 return -EFAULT;
248
249 if (ppos)
250 *ppos = msglen;
251 return msglen;
252}
253
254/* We could be much more efficient here. But to keep this function
255 * simple we allocate a page to the block list no matter how small the
256 * count is. If the system is low on memory it will be just as well
257 * that we fail....
258 */
259static ssize_t rtas_flash_write(struct file *file, const char __user *buffer,
260 size_t count, loff_t *off)
261{
262 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
263 struct rtas_update_flash_t *uf;
264 char *p;
265 int next_free;
266 struct flash_block_list *fl;
267
268 uf = (struct rtas_update_flash_t *) dp->data;
269
270 if (uf->status == FLASH_AUTH || count == 0)
271 return count; /* discard data */
272
273 /* In the case that the image is not ready for flashing, the memory
274 * allocated for the block list will be freed upon the release of the
275 * proc file
276 */
277 if (uf->flist == NULL) {
278 uf->flist = (struct flash_block_list *) get_zeroed_page(GFP_KERNEL);
279 if (!uf->flist)
280 return -ENOMEM;
281 }
282
283 fl = uf->flist;
284 while (fl->next)
285 fl = fl->next; /* seek to last block_list for append */
286 next_free = fl->num_blocks;
287 if (next_free == FLASH_BLOCKS_PER_NODE) {
288 /* Need to allocate another block_list */
289 fl->next = (struct flash_block_list *)get_zeroed_page(GFP_KERNEL);
290 if (!fl->next)
291 return -ENOMEM;
292 fl = fl->next;
293 next_free = 0;
294 }
295
296 if (count > PAGE_SIZE)
297 count = PAGE_SIZE;
298 p = (char *)get_zeroed_page(GFP_KERNEL);
299 if (!p)
300 return -ENOMEM;
301
302 if(copy_from_user(p, buffer, count)) {
303 free_page((unsigned long)p);
304 return -EFAULT;
305 }
306 fl->blocks[next_free].data = p;
307 fl->blocks[next_free].length = count;
308 fl->num_blocks++;
309
310 return count;
311}
312
313static int rtas_excl_open(struct inode *inode, struct file *file)
314{
315 struct proc_dir_entry *dp = PDE(inode);
316
317 /* Enforce exclusive open with use count of PDE */
318 spin_lock(&flash_file_open_lock);
319 if (atomic_read(&dp->count) > 1) {
320 spin_unlock(&flash_file_open_lock);
321 return -EBUSY;
322 }
323
324 atomic_inc(&dp->count);
325 spin_unlock(&flash_file_open_lock);
326
327 return 0;
328}
329
330static int rtas_excl_release(struct inode *inode, struct file *file)
331{
332 struct proc_dir_entry *dp = PDE(inode);
333
334 atomic_dec(&dp->count);
335
336 return 0;
337}
338
339static void manage_flash(struct rtas_manage_flash_t *args_buf)
340{
341 unsigned int wait_time;
342 s32 rc;
343
344 while (1) {
345 rc = rtas_call(rtas_token("ibm,manage-flash-image"), 1,
346 1, NULL, args_buf->op);
347 if (rc == RTAS_RC_BUSY)
348 udelay(1);
349 else if (rtas_is_extended_busy(rc)) {
350 wait_time = rtas_extended_busy_delay_time(rc);
351 udelay(wait_time * 1000);
352 } else
353 break;
354 }
355
356 args_buf->status = rc;
357}
358
359static ssize_t manage_flash_read(struct file *file, char __user *buf,
360 size_t count, loff_t *ppos)
361{
362 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
363 struct rtas_manage_flash_t *args_buf;
364 char msg[RTAS_MSG_MAXLEN];
365 int msglen;
366
367 args_buf = (struct rtas_manage_flash_t *) dp->data;
368 if (args_buf == NULL)
369 return 0;
370
371 msglen = sprintf(msg, "%d\n", args_buf->status);
372 if (msglen > count)
373 msglen = count;
374
375 if (ppos && *ppos != 0)
376 return 0; /* be cheap */
377
378 if (!access_ok(VERIFY_WRITE, buf, msglen))
379 return -EINVAL;
380
381 if (copy_to_user(buf, msg, msglen))
382 return -EFAULT;
383
384 if (ppos)
385 *ppos = msglen;
386 return msglen;
387}
388
389static ssize_t manage_flash_write(struct file *file, const char __user *buf,
390 size_t count, loff_t *off)
391{
392 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
393 struct rtas_manage_flash_t *args_buf;
394 const char reject_str[] = "0";
395 const char commit_str[] = "1";
396 char stkbuf[10];
397 int op;
398
399 args_buf = (struct rtas_manage_flash_t *) dp->data;
400 if ((args_buf->status == MANAGE_AUTH) || (count == 0))
401 return count;
402
403 op = -1;
404 if (buf) {
405 if (count > 9) count = 9;
406 if (copy_from_user (stkbuf, buf, count)) {
407 return -EFAULT;
408 }
409 if (strncmp(stkbuf, reject_str, strlen(reject_str)) == 0)
410 op = RTAS_REJECT_TMP_IMG;
411 else if (strncmp(stkbuf, commit_str, strlen(commit_str)) == 0)
412 op = RTAS_COMMIT_TMP_IMG;
413 }
414
415 if (op == -1) /* buf is empty, or contains invalid string */
416 return -EINVAL;
417
418 args_buf->op = op;
419 manage_flash(args_buf);
420
421 return count;
422}
423
424static void validate_flash(struct rtas_validate_flash_t *args_buf)
425{
426 int token = rtas_token("ibm,validate-flash-image");
427 unsigned int wait_time;
428 int update_results;
429 s32 rc;
430
431 rc = 0;
432 while(1) {
433 spin_lock(&rtas_data_buf_lock);
434 memcpy(rtas_data_buf, args_buf->buf, VALIDATE_BUF_SIZE);
435 rc = rtas_call(token, 2, 2, &update_results,
436 (u32) __pa(rtas_data_buf), args_buf->buf_size);
437 memcpy(args_buf->buf, rtas_data_buf, VALIDATE_BUF_SIZE);
438 spin_unlock(&rtas_data_buf_lock);
439
440 if (rc == RTAS_RC_BUSY)
441 udelay(1);
442 else if (rtas_is_extended_busy(rc)) {
443 wait_time = rtas_extended_busy_delay_time(rc);
444 udelay(wait_time * 1000);
445 } else
446 break;
447 }
448
449 args_buf->status = rc;
450 args_buf->update_results = update_results;
451}
452
453static int get_validate_flash_msg(struct rtas_validate_flash_t *args_buf,
454 char *msg)
455{
456 int n;
457
458 if (args_buf->status >= VALIDATE_TMP_UPDATE) {
459 n = sprintf(msg, "%d\n", args_buf->update_results);
460 if ((args_buf->update_results >= VALIDATE_CUR_UNKNOWN) ||
461 (args_buf->update_results == VALIDATE_TMP_UPDATE))
462 n += sprintf(msg + n, "%s\n", args_buf->buf);
463 } else {
464 n = sprintf(msg, "%d\n", args_buf->status);
465 }
466 return n;
467}
468
469static ssize_t validate_flash_read(struct file *file, char __user *buf,
470 size_t count, loff_t *ppos)
471{
472 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
473 struct rtas_validate_flash_t *args_buf;
474 char msg[RTAS_MSG_MAXLEN];
475 int msglen;
476
477 args_buf = (struct rtas_validate_flash_t *) dp->data;
478
479 if (ppos && *ppos != 0)
480 return 0; /* be cheap */
481
482 msglen = get_validate_flash_msg(args_buf, msg);
483 if (msglen > count)
484 msglen = count;
485
486 if (!access_ok(VERIFY_WRITE, buf, msglen))
487 return -EINVAL;
488
489 if (copy_to_user(buf, msg, msglen))
490 return -EFAULT;
491
492 if (ppos)
493 *ppos = msglen;
494 return msglen;
495}
496
497static ssize_t validate_flash_write(struct file *file, const char __user *buf,
498 size_t count, loff_t *off)
499{
500 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
501 struct rtas_validate_flash_t *args_buf;
502 int rc;
503
504 args_buf = (struct rtas_validate_flash_t *) dp->data;
505
506 if (dp->data == NULL) {
507 dp->data = kmalloc(sizeof(struct rtas_validate_flash_t),
508 GFP_KERNEL);
509 if (dp->data == NULL)
510 return -ENOMEM;
511 }
512
513 /* We are only interested in the first 4K of the
514 * candidate image */
515 if ((*off >= VALIDATE_BUF_SIZE) ||
516 (args_buf->status == VALIDATE_AUTH)) {
517 *off += count;
518 return count;
519 }
520
521 if (*off + count >= VALIDATE_BUF_SIZE) {
522 count = VALIDATE_BUF_SIZE - *off;
523 args_buf->status = VALIDATE_READY;
524 } else {
525 args_buf->status = VALIDATE_INCOMPLETE;
526 }
527
528 if (!access_ok(VERIFY_READ, buf, count)) {
529 rc = -EFAULT;
530 goto done;
531 }
532 if (copy_from_user(args_buf->buf + *off, buf, count)) {
533 rc = -EFAULT;
534 goto done;
535 }
536
537 *off += count;
538 rc = count;
539done:
540 if (rc < 0) {
541 kfree(dp->data);
542 dp->data = NULL;
543 }
544 return rc;
545}
546
547static int validate_flash_release(struct inode *inode, struct file *file)
548{
549 struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
550 struct rtas_validate_flash_t *args_buf;
551
552 args_buf = (struct rtas_validate_flash_t *) dp->data;
553
554 if (args_buf->status == VALIDATE_READY) {
555 args_buf->buf_size = VALIDATE_BUF_SIZE;
556 validate_flash(args_buf);
557 }
558
559 /* The matching atomic_inc was in rtas_excl_open() */
560 atomic_dec(&dp->count);
561
562 return 0;
563}
564
565static void remove_flash_pde(struct proc_dir_entry *dp)
566{
567 if (dp) {
568 if (dp->data != NULL)
569 kfree(dp->data);
570 dp->owner = NULL;
571 remove_proc_entry(dp->name, dp->parent);
572 }
573}
574
575static int initialize_flash_pde_data(const char *rtas_call_name,
576 size_t buf_size,
577 struct proc_dir_entry *dp)
578{
579 int *status;
580 int token;
581
582 dp->data = kmalloc(buf_size, GFP_KERNEL);
583 if (dp->data == NULL) {
584 remove_flash_pde(dp);
585 return -ENOMEM;
586 }
587
588 memset(dp->data, 0, buf_size);
589
590 /*
591 * This code assumes that the status int is the first member of the
592 * struct
593 */
594 status = (int *) dp->data;
595 token = rtas_token(rtas_call_name);
596 if (token == RTAS_UNKNOWN_SERVICE)
597 *status = FLASH_AUTH;
598 else
599 *status = FLASH_NO_OP;
600
601 return 0;
602}
603
604static struct proc_dir_entry *create_flash_pde(const char *filename,
605 struct file_operations *fops)
606{
607 struct proc_dir_entry *ent = NULL;
608
609 ent = create_proc_entry(filename, S_IRUSR | S_IWUSR, NULL);
610 if (ent != NULL) {
611 ent->nlink = 1;
612 ent->proc_fops = fops;
613 ent->owner = THIS_MODULE;
614 }
615
616 return ent;
617}
618
619static struct file_operations rtas_flash_operations = {
620 .read = rtas_flash_read,
621 .write = rtas_flash_write,
622 .open = rtas_excl_open,
623 .release = rtas_flash_release,
624};
625
626static struct file_operations manage_flash_operations = {
627 .read = manage_flash_read,
628 .write = manage_flash_write,
629 .open = rtas_excl_open,
630 .release = rtas_excl_release,
631};
632
633static struct file_operations validate_flash_operations = {
634 .read = validate_flash_read,
635 .write = validate_flash_write,
636 .open = rtas_excl_open,
637 .release = validate_flash_release,
638};
639
640int __init rtas_flash_init(void)
641{
642 int rc;
643
644 if (rtas_token("ibm,update-flash-64-and-reboot") ==
645 RTAS_UNKNOWN_SERVICE) {
646 printk(KERN_ERR "rtas_flash: no firmware flash support\n");
647 return 1;
648 }
649
650 firmware_flash_pde = create_flash_pde("ppc64/rtas/"
651 FIRMWARE_FLASH_NAME,
652 &rtas_flash_operations);
653 if (firmware_flash_pde == NULL) {
654 rc = -ENOMEM;
655 goto cleanup;
656 }
657
658 rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
659 sizeof(struct rtas_update_flash_t),
660 firmware_flash_pde);
661 if (rc != 0)
662 goto cleanup;
663
664 firmware_update_pde = create_flash_pde("ppc64/rtas/"
665 FIRMWARE_UPDATE_NAME,
666 &rtas_flash_operations);
667 if (firmware_update_pde == NULL) {
668 rc = -ENOMEM;
669 goto cleanup;
670 }
671
672 rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
673 sizeof(struct rtas_update_flash_t),
674 firmware_update_pde);
675 if (rc != 0)
676 goto cleanup;
677
678 validate_pde = create_flash_pde("ppc64/rtas/" VALIDATE_FLASH_NAME,
679 &validate_flash_operations);
680 if (validate_pde == NULL) {
681 rc = -ENOMEM;
682 goto cleanup;
683 }
684
685 rc = initialize_flash_pde_data("ibm,validate-flash-image",
686 sizeof(struct rtas_validate_flash_t),
687 validate_pde);
688 if (rc != 0)
689 goto cleanup;
690
691 manage_pde = create_flash_pde("ppc64/rtas/" MANAGE_FLASH_NAME,
692 &manage_flash_operations);
693 if (manage_pde == NULL) {
694 rc = -ENOMEM;
695 goto cleanup;
696 }
697
698 rc = initialize_flash_pde_data("ibm,manage-flash-image",
699 sizeof(struct rtas_manage_flash_t),
700 manage_pde);
701 if (rc != 0)
702 goto cleanup;
703
704 return 0;
705
706cleanup:
707 remove_flash_pde(firmware_flash_pde);
708 remove_flash_pde(firmware_update_pde);
709 remove_flash_pde(validate_pde);
710 remove_flash_pde(manage_pde);
711
712 return rc;
713}
714
715void __exit rtas_flash_cleanup(void)
716{
717 remove_flash_pde(firmware_flash_pde);
718 remove_flash_pde(firmware_update_pde);
719 remove_flash_pde(validate_pde);
720 remove_flash_pde(manage_pde);
721}
722
723module_init(rtas_flash_init);
724module_exit(rtas_flash_cleanup);
725MODULE_LICENSE("GPL");
diff --git a/arch/ppc64/kernel/rtasd.c b/arch/ppc64/kernel/rtasd.c
deleted file mode 100644
index e26b0420b6dd..000000000000
--- a/arch/ppc64/kernel/rtasd.c
+++ /dev/null
@@ -1,527 +0,0 @@
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>
22#include <linux/delay.h>
23
24#include <asm/uaccess.h>
25#include <asm/io.h>
26#include <asm/rtas.h>
27#include <asm/prom.h>
28#include <asm/nvram.h>
29#include <asm/atomic.h>
30#include <asm/systemcfg.h>
31
32#if 0
33#define DEBUG(A...) printk(KERN_ERR A)
34#else
35#define DEBUG(A...)
36#endif
37
38static DEFINE_SPINLOCK(rtasd_log_lock);
39
40DECLARE_WAIT_QUEUE_HEAD(rtas_log_wait);
41
42static char *rtas_log_buf;
43static unsigned long rtas_log_start;
44static unsigned long rtas_log_size;
45
46static int surveillance_timeout = -1;
47static unsigned int rtas_event_scan_rate;
48static unsigned int rtas_error_log_max;
49static unsigned int rtas_error_log_buffer_max;
50
51static int full_rtas_msgs = 0;
52
53extern int no_logging;
54
55volatile int error_log_cnt = 0;
56
57/*
58 * Since we use 32 bit RTAS, the physical address of this must be below
59 * 4G or else bad things happen. Allocate this in the kernel data and
60 * make it big enough.
61 */
62static unsigned char logdata[RTAS_ERROR_LOG_MAX];
63
64static int get_eventscan_parms(void);
65
66static char *rtas_type[] = {
67 "Unknown", "Retry", "TCE Error", "Internal Device Failure",
68 "Timeout", "Data Parity", "Address Parity", "Cache Parity",
69 "Address Invalid", "ECC Uncorrected", "ECC Corrupted",
70};
71
72static char *rtas_event_type(int type)
73{
74 if ((type > 0) && (type < 11))
75 return rtas_type[type];
76
77 switch (type) {
78 case RTAS_TYPE_EPOW:
79 return "EPOW";
80 case RTAS_TYPE_PLATFORM:
81 return "Platform Error";
82 case RTAS_TYPE_IO:
83 return "I/O Event";
84 case RTAS_TYPE_INFO:
85 return "Platform Information Event";
86 case RTAS_TYPE_DEALLOC:
87 return "Resource Deallocation Event";
88 case RTAS_TYPE_DUMP:
89 return "Dump Notification Event";
90 }
91
92 return rtas_type[0];
93}
94
95/* To see this info, grep RTAS /var/log/messages and each entry
96 * will be collected together with obvious begin/end.
97 * There will be a unique identifier on the begin and end lines.
98 * This will persist across reboots.
99 *
100 * format of error logs returned from RTAS:
101 * bytes (size) : contents
102 * --------------------------------------------------------
103 * 0-7 (8) : rtas_error_log
104 * 8-47 (40) : extended info
105 * 48-51 (4) : vendor id
106 * 52-1023 (vendor specific) : location code and debug data
107 */
108static void printk_log_rtas(char *buf, int len)
109{
110
111 int i,j,n = 0;
112 int perline = 16;
113 char buffer[64];
114 char * str = "RTAS event";
115
116 if (full_rtas_msgs) {
117 printk(RTAS_DEBUG "%d -------- %s begin --------\n",
118 error_log_cnt, str);
119
120 /*
121 * Print perline bytes on each line, each line will start
122 * with RTAS and a changing number, so syslogd will
123 * print lines that are otherwise the same. Separate every
124 * 4 bytes with a space.
125 */
126 for (i = 0; i < len; i++) {
127 j = i % perline;
128 if (j == 0) {
129 memset(buffer, 0, sizeof(buffer));
130 n = sprintf(buffer, "RTAS %d:", i/perline);
131 }
132
133 if ((i % 4) == 0)
134 n += sprintf(buffer+n, " ");
135
136 n += sprintf(buffer+n, "%02x", (unsigned char)buf[i]);
137
138 if (j == (perline-1))
139 printk(KERN_DEBUG "%s\n", buffer);
140 }
141 if ((i % perline) != 0)
142 printk(KERN_DEBUG "%s\n", buffer);
143
144 printk(RTAS_DEBUG "%d -------- %s end ----------\n",
145 error_log_cnt, str);
146 } else {
147 struct rtas_error_log *errlog = (struct rtas_error_log *)buf;
148
149 printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n",
150 error_log_cnt, rtas_event_type(errlog->type),
151 errlog->severity);
152 }
153}
154
155static int log_rtas_len(char * buf)
156{
157 int len;
158 struct rtas_error_log *err;
159
160 /* rtas fixed header */
161 len = 8;
162 err = (struct rtas_error_log *)buf;
163 if (err->extended_log_length) {
164
165 /* extended header */
166 len += err->extended_log_length;
167 }
168
169 if (rtas_error_log_max == 0) {
170 get_eventscan_parms();
171 }
172 if (len > rtas_error_log_max)
173 len = rtas_error_log_max;
174
175 return len;
176}
177
178/*
179 * First write to nvram, if fatal error, that is the only
180 * place we log the info. The error will be picked up
181 * on the next reboot by rtasd. If not fatal, run the
182 * method for the type of error. Currently, only RTAS
183 * errors have methods implemented, but in the future
184 * there might be a need to store data in nvram before a
185 * call to panic().
186 *
187 * XXX We write to nvram periodically, to indicate error has
188 * been written and sync'd, but there is a possibility
189 * that if we don't shutdown correctly, a duplicate error
190 * record will be created on next reboot.
191 */
192void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
193{
194 unsigned long offset;
195 unsigned long s;
196 int len = 0;
197
198 DEBUG("logging event\n");
199 if (buf == NULL)
200 return;
201
202 spin_lock_irqsave(&rtasd_log_lock, s);
203
204 /* get length and increase count */
205 switch (err_type & ERR_TYPE_MASK) {
206 case ERR_TYPE_RTAS_LOG:
207 len = log_rtas_len(buf);
208 if (!(err_type & ERR_FLAG_BOOT))
209 error_log_cnt++;
210 break;
211 case ERR_TYPE_KERNEL_PANIC:
212 default:
213 spin_unlock_irqrestore(&rtasd_log_lock, s);
214 return;
215 }
216
217 /* Write error to NVRAM */
218 if (!no_logging && !(err_type & ERR_FLAG_BOOT))
219 nvram_write_error_log(buf, len, err_type);
220
221 /*
222 * rtas errors can occur during boot, and we do want to capture
223 * those somewhere, even if nvram isn't ready (why not?), and even
224 * if rtasd isn't ready. Put them into the boot log, at least.
225 */
226 if ((err_type & ERR_TYPE_MASK) == ERR_TYPE_RTAS_LOG)
227 printk_log_rtas(buf, len);
228
229 /* Check to see if we need to or have stopped logging */
230 if (fatal || no_logging) {
231 no_logging = 1;
232 spin_unlock_irqrestore(&rtasd_log_lock, s);
233 return;
234 }
235
236 /* call type specific method for error */
237 switch (err_type & ERR_TYPE_MASK) {
238 case ERR_TYPE_RTAS_LOG:
239 offset = rtas_error_log_buffer_max *
240 ((rtas_log_start+rtas_log_size) & LOG_NUMBER_MASK);
241
242 /* First copy over sequence number */
243 memcpy(&rtas_log_buf[offset], (void *) &error_log_cnt, sizeof(int));
244
245 /* Second copy over error log data */
246 offset += sizeof(int);
247 memcpy(&rtas_log_buf[offset], buf, len);
248
249 if (rtas_log_size < LOG_NUMBER)
250 rtas_log_size += 1;
251 else
252 rtas_log_start += 1;
253
254 spin_unlock_irqrestore(&rtasd_log_lock, s);
255 wake_up_interruptible(&rtas_log_wait);
256 break;
257 case ERR_TYPE_KERNEL_PANIC:
258 default:
259 spin_unlock_irqrestore(&rtasd_log_lock, s);
260 return;
261 }
262
263}
264
265
266static int rtas_log_open(struct inode * inode, struct file * file)
267{
268 return 0;
269}
270
271static int rtas_log_release(struct inode * inode, struct file * file)
272{
273 return 0;
274}
275
276/* This will check if all events are logged, if they are then, we
277 * know that we can safely clear the events in NVRAM.
278 * Next we'll sit and wait for something else to log.
279 */
280static ssize_t rtas_log_read(struct file * file, char __user * buf,
281 size_t count, loff_t *ppos)
282{
283 int error;
284 char *tmp;
285 unsigned long s;
286 unsigned long offset;
287
288 if (!buf || count < rtas_error_log_buffer_max)
289 return -EINVAL;
290
291 count = rtas_error_log_buffer_max;
292
293 if (!access_ok(VERIFY_WRITE, buf, count))
294 return -EFAULT;
295
296 tmp = kmalloc(count, GFP_KERNEL);
297 if (!tmp)
298 return -ENOMEM;
299
300
301 spin_lock_irqsave(&rtasd_log_lock, s);
302 /* if it's 0, then we know we got the last one (the one in NVRAM) */
303 if (rtas_log_size == 0 && !no_logging)
304 nvram_clear_error_log();
305 spin_unlock_irqrestore(&rtasd_log_lock, s);
306
307
308 error = wait_event_interruptible(rtas_log_wait, rtas_log_size);
309 if (error)
310 goto out;
311
312 spin_lock_irqsave(&rtasd_log_lock, s);
313 offset = rtas_error_log_buffer_max * (rtas_log_start & LOG_NUMBER_MASK);
314 memcpy(tmp, &rtas_log_buf[offset], count);
315
316 rtas_log_start += 1;
317 rtas_log_size -= 1;
318 spin_unlock_irqrestore(&rtasd_log_lock, s);
319
320 error = copy_to_user(buf, tmp, count) ? -EFAULT : count;
321out:
322 kfree(tmp);
323 return error;
324}
325
326static unsigned int rtas_log_poll(struct file *file, poll_table * wait)
327{
328 poll_wait(file, &rtas_log_wait, wait);
329 if (rtas_log_size)
330 return POLLIN | POLLRDNORM;
331 return 0;
332}
333
334struct file_operations proc_rtas_log_operations = {
335 .read = rtas_log_read,
336 .poll = rtas_log_poll,
337 .open = rtas_log_open,
338 .release = rtas_log_release,
339};
340
341static int enable_surveillance(int timeout)
342{
343 int error;
344
345 error = rtas_set_indicator(SURVEILLANCE_TOKEN, 0, timeout);
346
347 if (error == 0)
348 return 0;
349
350 if (error == -EINVAL) {
351 printk(KERN_INFO "rtasd: surveillance not supported\n");
352 return 0;
353 }
354
355 printk(KERN_ERR "rtasd: could not update surveillance\n");
356 return -1;
357}
358
359static int get_eventscan_parms(void)
360{
361 struct device_node *node;
362 int *ip;
363
364 node = of_find_node_by_path("/rtas");
365
366 ip = (int *)get_property(node, "rtas-event-scan-rate", NULL);
367 if (ip == NULL) {
368 printk(KERN_ERR "rtasd: no rtas-event-scan-rate\n");
369 of_node_put(node);
370 return -1;
371 }
372 rtas_event_scan_rate = *ip;
373 DEBUG("rtas-event-scan-rate %d\n", rtas_event_scan_rate);
374
375 /* Make room for the sequence number */
376 rtas_error_log_max = rtas_get_error_log_max();
377 rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int);
378
379 of_node_put(node);
380
381 return 0;
382}
383
384static void do_event_scan(int event_scan)
385{
386 int error;
387 do {
388 memset(logdata, 0, rtas_error_log_max);
389 error = rtas_call(event_scan, 4, 1, NULL,
390 RTAS_EVENT_SCAN_ALL_EVENTS, 0,
391 __pa(logdata), rtas_error_log_max);
392 if (error == -1) {
393 printk(KERN_ERR "event-scan failed\n");
394 break;
395 }
396
397 if (error == 0)
398 pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0);
399
400 } while(error == 0);
401}
402
403static void do_event_scan_all_cpus(long delay)
404{
405 int cpu;
406
407 lock_cpu_hotplug();
408 cpu = first_cpu(cpu_online_map);
409 for (;;) {
410 set_cpus_allowed(current, cpumask_of_cpu(cpu));
411 do_event_scan(rtas_token("event-scan"));
412 set_cpus_allowed(current, CPU_MASK_ALL);
413
414 /* Drop hotplug lock, and sleep for the specified delay */
415 unlock_cpu_hotplug();
416 msleep_interruptible(delay);
417 lock_cpu_hotplug();
418
419 cpu = next_cpu(cpu, cpu_online_map);
420 if (cpu == NR_CPUS)
421 break;
422 }
423 unlock_cpu_hotplug();
424}
425
426static int rtasd(void *unused)
427{
428 unsigned int err_type;
429 int event_scan = rtas_token("event-scan");
430 int rc;
431
432 daemonize("rtasd");
433
434 if (event_scan == RTAS_UNKNOWN_SERVICE || get_eventscan_parms() == -1)
435 goto error;
436
437 rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER);
438 if (!rtas_log_buf) {
439 printk(KERN_ERR "rtasd: no memory\n");
440 goto error;
441 }
442
443 printk(KERN_INFO "RTAS daemon started\n");
444
445 DEBUG("will sleep for %d milliseconds\n", (30000/rtas_event_scan_rate));
446
447 /* See if we have any error stored in NVRAM */
448 memset(logdata, 0, rtas_error_log_max);
449
450 rc = nvram_read_error_log(logdata, rtas_error_log_max, &err_type);
451
452 /* We can use rtas_log_buf now */
453 no_logging = 0;
454
455 if (!rc) {
456 if (err_type != ERR_FLAG_ALREADY_LOGGED) {
457 pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0);
458 }
459 }
460
461 /* First pass. */
462 do_event_scan_all_cpus(1000);
463
464 if (surveillance_timeout != -1) {
465 DEBUG("enabling surveillance\n");
466 enable_surveillance(surveillance_timeout);
467 DEBUG("surveillance enabled\n");
468 }
469
470 /* Delay should be at least one second since some
471 * machines have problems if we call event-scan too
472 * quickly. */
473 for (;;)
474 do_event_scan_all_cpus(30000/rtas_event_scan_rate);
475
476error:
477 /* Should delete proc entries */
478 return -EINVAL;
479}
480
481static int __init rtas_init(void)
482{
483 struct proc_dir_entry *entry;
484
485 /* No RTAS, only warn if we are on a pSeries box */
486 if (rtas_token("event-scan") == RTAS_UNKNOWN_SERVICE) {
487 if (systemcfg->platform & PLATFORM_PSERIES)
488 printk(KERN_INFO "rtasd: no event-scan on system\n");
489 return 1;
490 }
491
492 entry = create_proc_entry("ppc64/rtas/error_log", S_IRUSR, NULL);
493 if (entry)
494 entry->proc_fops = &proc_rtas_log_operations;
495 else
496 printk(KERN_ERR "Failed to create error_log proc entry\n");
497
498 if (kernel_thread(rtasd, NULL, CLONE_FS) < 0)
499 printk(KERN_ERR "Failed to start RTAS daemon\n");
500
501 return 0;
502}
503
504static int __init surveillance_setup(char *str)
505{
506 int i;
507
508 if (get_option(&str,&i)) {
509 if (i >= 0 && i <= 255)
510 surveillance_timeout = i;
511 }
512
513 return 1;
514}
515
516static int __init rtasmsgs_setup(char *str)
517{
518 if (strcmp(str, "on") == 0)
519 full_rtas_msgs = 1;
520 else if (strcmp(str, "off") == 0)
521 full_rtas_msgs = 0;
522
523 return 1;
524}
525__initcall(rtas_init);
526__setup("surveillance=", surveillance_setup);
527__setup("rtasmsgs=", rtasmsgs_setup);
diff --git a/arch/ppc64/kernel/signal.c b/arch/ppc64/kernel/signal.c
deleted file mode 100644
index ec9d0984b6a0..000000000000
--- a/arch/ppc64/kernel/signal.c
+++ /dev/null
@@ -1,581 +0,0 @@
1/*
2 * linux/arch/ppc64/kernel/signal.c
3 *
4 * PowerPC version
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 *
7 * Derived from "arch/i386/kernel/signal.c"
8 * Copyright (C) 1991, 1992 Linus Torvalds
9 * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 */
16
17#include <linux/config.h>
18#include <linux/sched.h>
19#include <linux/mm.h>
20#include <linux/smp.h>
21#include <linux/smp_lock.h>
22#include <linux/kernel.h>
23#include <linux/signal.h>
24#include <linux/errno.h>
25#include <linux/wait.h>
26#include <linux/unistd.h>
27#include <linux/stddef.h>
28#include <linux/elf.h>
29#include <linux/ptrace.h>
30#include <linux/module.h>
31
32#include <asm/sigcontext.h>
33#include <asm/ucontext.h>
34#include <asm/uaccess.h>
35#include <asm/pgtable.h>
36#include <asm/ppcdebug.h>
37#include <asm/unistd.h>
38#include <asm/cacheflush.h>
39#include <asm/vdso.h>
40
41#define DEBUG_SIG 0
42
43#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
44
45#define GP_REGS_SIZE min(sizeof(elf_gregset_t), sizeof(struct pt_regs))
46#define FP_REGS_SIZE sizeof(elf_fpregset_t)
47
48#define TRAMP_TRACEBACK 3
49#define TRAMP_SIZE 6
50
51/*
52 * When we have signals to deliver, we set up on the user stack,
53 * going down from the original stack pointer:
54 * 1) a rt_sigframe struct which contains the ucontext
55 * 2) a gap of __SIGNAL_FRAMESIZE bytes which acts as a dummy caller
56 * frame for the signal handler.
57 */
58
59struct rt_sigframe {
60 /* sys_rt_sigreturn requires the ucontext be the first field */
61 struct ucontext uc;
62 unsigned long _unused[2];
63 unsigned int tramp[TRAMP_SIZE];
64 struct siginfo *pinfo;
65 void *puc;
66 struct siginfo info;
67 /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
68 char abigap[288];
69} __attribute__ ((aligned (16)));
70
71
72/*
73 * Atomically swap in the new signal mask, and wait for a signal.
74 */
75long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, int p3, int p4,
76 int p6, int p7, struct pt_regs *regs)
77{
78 sigset_t saveset, newset;
79
80 /* XXX: Don't preclude handling different sized sigset_t's. */
81 if (sigsetsize != sizeof(sigset_t))
82 return -EINVAL;
83
84 if (copy_from_user(&newset, unewset, sizeof(newset)))
85 return -EFAULT;
86 sigdelsetmask(&newset, ~_BLOCKABLE);
87
88 spin_lock_irq(&current->sighand->siglock);
89 saveset = current->blocked;
90 current->blocked = newset;
91 recalc_sigpending();
92 spin_unlock_irq(&current->sighand->siglock);
93
94 regs->result = -EINTR;
95 regs->gpr[3] = EINTR;
96 regs->ccr |= 0x10000000;
97 while (1) {
98 current->state = TASK_INTERRUPTIBLE;
99 schedule();
100 if (do_signal(&saveset, regs))
101 return 0;
102 }
103}
104
105long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, unsigned long r5,
106 unsigned long r6, unsigned long r7, unsigned long r8,
107 struct pt_regs *regs)
108{
109 return do_sigaltstack(uss, uoss, regs->gpr[1]);
110}
111
112
113/*
114 * Set up the sigcontext for the signal frame.
115 */
116
117static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
118 int signr, sigset_t *set, unsigned long handler)
119{
120 /* When CONFIG_ALTIVEC is set, we _always_ setup v_regs even if the
121 * process never used altivec yet (MSR_VEC is zero in pt_regs of
122 * the context). This is very important because we must ensure we
123 * don't lose the VRSAVE content that may have been set prior to
124 * the process doing its first vector operation
125 * Userland shall check AT_HWCAP to know wether it can rely on the
126 * v_regs pointer or not
127 */
128#ifdef CONFIG_ALTIVEC
129 elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *)(((unsigned long)sc->vmx_reserve + 15) & ~0xful);
130#endif
131 long err = 0;
132
133 flush_fp_to_thread(current);
134
135 /* Make sure signal doesn't get spurrious FP exceptions */
136 current->thread.fpscr.val = 0;
137
138#ifdef CONFIG_ALTIVEC
139 err |= __put_user(v_regs, &sc->v_regs);
140
141 /* save altivec registers */
142 if (current->thread.used_vr) {
143 flush_altivec_to_thread(current);
144 /* Copy 33 vec registers (vr0..31 and vscr) to the stack */
145 err |= __copy_to_user(v_regs, current->thread.vr, 33 * sizeof(vector128));
146 /* set MSR_VEC in the MSR value in the frame to indicate that sc->v_reg)
147 * contains valid data.
148 */
149 regs->msr |= MSR_VEC;
150 }
151 /* We always copy to/from vrsave, it's 0 if we don't have or don't
152 * use altivec.
153 */
154 err |= __put_user(current->thread.vrsave, (u32 __user *)&v_regs[33]);
155#else /* CONFIG_ALTIVEC */
156 err |= __put_user(0, &sc->v_regs);
157#endif /* CONFIG_ALTIVEC */
158 err |= __put_user(&sc->gp_regs, &sc->regs);
159 err |= __copy_to_user(&sc->gp_regs, regs, GP_REGS_SIZE);
160 err |= __copy_to_user(&sc->fp_regs, &current->thread.fpr, FP_REGS_SIZE);
161 err |= __put_user(signr, &sc->signal);
162 err |= __put_user(handler, &sc->handler);
163 if (set != NULL)
164 err |= __put_user(set->sig[0], &sc->oldmask);
165
166 return err;
167}
168
169/*
170 * Restore the sigcontext from the signal frame.
171 */
172
173static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
174 struct sigcontext __user *sc)
175{
176#ifdef CONFIG_ALTIVEC
177 elf_vrreg_t __user *v_regs;
178#endif
179 unsigned long err = 0;
180 unsigned long save_r13 = 0;
181 elf_greg_t *gregs = (elf_greg_t *)regs;
182#ifdef CONFIG_ALTIVEC
183 unsigned long msr;
184#endif
185 int i;
186
187 /* If this is not a signal return, we preserve the TLS in r13 */
188 if (!sig)
189 save_r13 = regs->gpr[13];
190
191 /* copy everything before MSR */
192 err |= __copy_from_user(regs, &sc->gp_regs,
193 PT_MSR*sizeof(unsigned long));
194
195 /* skip MSR and SOFTE */
196 for (i = PT_MSR+1; i <= PT_RESULT; i++) {
197 if (i == PT_SOFTE)
198 continue;
199 err |= __get_user(gregs[i], &sc->gp_regs[i]);
200 }
201
202 if (!sig)
203 regs->gpr[13] = save_r13;
204 err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
205 if (set != NULL)
206 err |= __get_user(set->sig[0], &sc->oldmask);
207
208#ifdef CONFIG_ALTIVEC
209 err |= __get_user(v_regs, &sc->v_regs);
210 err |= __get_user(msr, &sc->gp_regs[PT_MSR]);
211 if (err)
212 return err;
213 /* Copy 33 vec registers (vr0..31 and vscr) from the stack */
214 if (v_regs != 0 && (msr & MSR_VEC) != 0)
215 err |= __copy_from_user(current->thread.vr, v_regs,
216 33 * sizeof(vector128));
217 else if (current->thread.used_vr)
218 memset(current->thread.vr, 0, 33 * sizeof(vector128));
219 /* Always get VRSAVE back */
220 if (v_regs != 0)
221 err |= __get_user(current->thread.vrsave, (u32 __user *)&v_regs[33]);
222 else
223 current->thread.vrsave = 0;
224#endif /* CONFIG_ALTIVEC */
225
226#ifndef CONFIG_SMP
227 preempt_disable();
228 if (last_task_used_math == current)
229 last_task_used_math = NULL;
230 if (last_task_used_altivec == current)
231 last_task_used_altivec = NULL;
232 preempt_enable();
233#endif
234 /* Force reload of FP/VEC */
235 regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC);
236
237 return err;
238}
239
240/*
241 * Allocate space for the signal frame
242 */
243static inline void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
244 size_t frame_size)
245{
246 unsigned long newsp;
247
248 /* Default to using normal stack */
249 newsp = regs->gpr[1];
250
251 if (ka->sa.sa_flags & SA_ONSTACK) {
252 if (! on_sig_stack(regs->gpr[1]))
253 newsp = (current->sas_ss_sp + current->sas_ss_size);
254 }
255
256 return (void __user *)((newsp - frame_size) & -16ul);
257}
258
259/*
260 * Setup the trampoline code on the stack
261 */
262static long setup_trampoline(unsigned int syscall, unsigned int __user *tramp)
263{
264 int i;
265 long err = 0;
266
267 /* addi r1, r1, __SIGNAL_FRAMESIZE # Pop the dummy stackframe */
268 err |= __put_user(0x38210000UL | (__SIGNAL_FRAMESIZE & 0xffff), &tramp[0]);
269 /* li r0, __NR_[rt_]sigreturn| */
270 err |= __put_user(0x38000000UL | (syscall & 0xffff), &tramp[1]);
271 /* sc */
272 err |= __put_user(0x44000002UL, &tramp[2]);
273
274 /* Minimal traceback info */
275 for (i=TRAMP_TRACEBACK; i < TRAMP_SIZE ;i++)
276 err |= __put_user(0, &tramp[i]);
277
278 if (!err)
279 flush_icache_range((unsigned long) &tramp[0],
280 (unsigned long) &tramp[TRAMP_SIZE]);
281
282 return err;
283}
284
285/*
286 * Restore the user process's signal mask (also used by signal32.c)
287 */
288void restore_sigmask(sigset_t *set)
289{
290 sigdelsetmask(set, ~_BLOCKABLE);
291 spin_lock_irq(&current->sighand->siglock);
292 current->blocked = *set;
293 recalc_sigpending();
294 spin_unlock_irq(&current->sighand->siglock);
295}
296
297
298/*
299 * Handle {get,set,swap}_context operations
300 */
301int sys_swapcontext(struct ucontext __user *old_ctx,
302 struct ucontext __user *new_ctx,
303 long ctx_size, long r6, long r7, long r8, struct pt_regs *regs)
304{
305 unsigned char tmp;
306 sigset_t set;
307
308 /* Context size is for future use. Right now, we only make sure
309 * we are passed something we understand
310 */
311 if (ctx_size < sizeof(struct ucontext))
312 return -EINVAL;
313
314 if (old_ctx != NULL) {
315 if (!access_ok(VERIFY_WRITE, old_ctx, sizeof(*old_ctx))
316 || setup_sigcontext(&old_ctx->uc_mcontext, regs, 0, NULL, 0)
317 || __copy_to_user(&old_ctx->uc_sigmask,
318 &current->blocked, sizeof(sigset_t)))
319 return -EFAULT;
320 }
321 if (new_ctx == NULL)
322 return 0;
323 if (!access_ok(VERIFY_READ, new_ctx, sizeof(*new_ctx))
324 || __get_user(tmp, (u8 __user *) new_ctx)
325 || __get_user(tmp, (u8 __user *) (new_ctx + 1) - 1))
326 return -EFAULT;
327
328 /*
329 * If we get a fault copying the context into the kernel's
330 * image of the user's registers, we can't just return -EFAULT
331 * because the user's registers will be corrupted. For instance
332 * the NIP value may have been updated but not some of the
333 * other registers. Given that we have done the access_ok
334 * and successfully read the first and last bytes of the region
335 * above, this should only happen in an out-of-memory situation
336 * or if another thread unmaps the region containing the context.
337 * We kill the task with a SIGSEGV in this situation.
338 */
339
340 if (__copy_from_user(&set, &new_ctx->uc_sigmask, sizeof(set)))
341 do_exit(SIGSEGV);
342 restore_sigmask(&set);
343 if (restore_sigcontext(regs, NULL, 0, &new_ctx->uc_mcontext))
344 do_exit(SIGSEGV);
345
346 /* This returns like rt_sigreturn */
347 return 0;
348}
349
350
351/*
352 * Do a signal return; undo the signal stack.
353 */
354
355int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
356 unsigned long r6, unsigned long r7, unsigned long r8,
357 struct pt_regs *regs)
358{
359 struct ucontext __user *uc = (struct ucontext __user *)regs->gpr[1];
360 sigset_t set;
361
362 /* Always make any pending restarted system calls return -EINTR */
363 current_thread_info()->restart_block.fn = do_no_restart_syscall;
364
365 if (!access_ok(VERIFY_READ, uc, sizeof(*uc)))
366 goto badframe;
367
368 if (__copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
369 goto badframe;
370 restore_sigmask(&set);
371 if (restore_sigcontext(regs, NULL, 1, &uc->uc_mcontext))
372 goto badframe;
373
374 /* do_sigaltstack expects a __user pointer and won't modify
375 * what's in there anyway
376 */
377 do_sigaltstack(&uc->uc_stack, NULL, regs->gpr[1]);
378
379 return regs->result;
380
381badframe:
382#if DEBUG_SIG
383 printk("badframe in sys_rt_sigreturn, regs=%p uc=%p &uc->uc_mcontext=%p\n",
384 regs, uc, &uc->uc_mcontext);
385#endif
386 force_sig(SIGSEGV, current);
387 return 0;
388}
389
390static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
391 sigset_t *set, struct pt_regs *regs)
392{
393 /* Handler is *really* a pointer to the function descriptor for
394 * the signal routine. The first entry in the function
395 * descriptor is the entry address of signal and the second
396 * entry is the TOC value we need to use.
397 */
398 func_descr_t __user *funct_desc_ptr;
399 struct rt_sigframe __user *frame;
400 unsigned long newsp = 0;
401 long err = 0;
402
403 frame = get_sigframe(ka, regs, sizeof(*frame));
404
405 if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
406 goto badframe;
407
408 err |= __put_user(&frame->info, &frame->pinfo);
409 err |= __put_user(&frame->uc, &frame->puc);
410 err |= copy_siginfo_to_user(&frame->info, info);
411 if (err)
412 goto badframe;
413
414 /* Create the ucontext. */
415 err |= __put_user(0, &frame->uc.uc_flags);
416 err |= __put_user(0, &frame->uc.uc_link);
417 err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
418 err |= __put_user(sas_ss_flags(regs->gpr[1]),
419 &frame->uc.uc_stack.ss_flags);
420 err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
421 err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, signr, NULL,
422 (unsigned long)ka->sa.sa_handler);
423 err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
424 if (err)
425 goto badframe;
426
427 /* Set up to return from userspace. */
428 if (vdso64_rt_sigtramp && current->thread.vdso_base) {
429 regs->link = current->thread.vdso_base + vdso64_rt_sigtramp;
430 } else {
431 err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]);
432 if (err)
433 goto badframe;
434 regs->link = (unsigned long) &frame->tramp[0];
435 }
436 funct_desc_ptr = (func_descr_t __user *) ka->sa.sa_handler;
437
438 /* Allocate a dummy caller frame for the signal handler. */
439 newsp = (unsigned long)frame - __SIGNAL_FRAMESIZE;
440 err |= put_user(regs->gpr[1], (unsigned long __user *)newsp);
441
442 /* Set up "regs" so we "return" to the signal handler. */
443 err |= get_user(regs->nip, &funct_desc_ptr->entry);
444 regs->gpr[1] = newsp;
445 err |= get_user(regs->gpr[2], &funct_desc_ptr->toc);
446 regs->gpr[3] = signr;
447 regs->result = 0;
448 if (ka->sa.sa_flags & SA_SIGINFO) {
449 err |= get_user(regs->gpr[4], (unsigned long __user *)&frame->pinfo);
450 err |= get_user(regs->gpr[5], (unsigned long __user *)&frame->puc);
451 regs->gpr[6] = (unsigned long) frame;
452 } else {
453 regs->gpr[4] = (unsigned long)&frame->uc.uc_mcontext;
454 }
455 if (err)
456 goto badframe;
457
458 if (test_thread_flag(TIF_SINGLESTEP))
459 ptrace_notify(SIGTRAP);
460
461 return 1;
462
463badframe:
464#if DEBUG_SIG
465 printk("badframe in setup_rt_frame, regs=%p frame=%p newsp=%lx\n",
466 regs, frame, newsp);
467#endif
468 force_sigsegv(signr, current);
469 return 0;
470}
471
472
473/*
474 * OK, we're invoking a handler
475 */
476static int handle_signal(unsigned long sig, struct k_sigaction *ka,
477 siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
478{
479 int ret;
480
481 /* Set up Signal Frame */
482 ret = setup_rt_frame(sig, ka, info, oldset, regs);
483
484 if (ret) {
485 spin_lock_irq(&current->sighand->siglock);
486 sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
487 if (!(ka->sa.sa_flags & SA_NODEFER))
488 sigaddset(&current->blocked,sig);
489 recalc_sigpending();
490 spin_unlock_irq(&current->sighand->siglock);
491 }
492
493 return ret;
494}
495
496static inline void syscall_restart(struct pt_regs *regs, struct k_sigaction *ka)
497{
498 switch ((int)regs->result) {
499 case -ERESTART_RESTARTBLOCK:
500 case -ERESTARTNOHAND:
501 /* ERESTARTNOHAND means that the syscall should only be
502 * restarted if there was no handler for the signal, and since
503 * we only get here if there is a handler, we dont restart.
504 */
505 regs->result = -EINTR;
506 break;
507 case -ERESTARTSYS:
508 /* ERESTARTSYS means to restart the syscall if there is no
509 * handler or the handler was registered with SA_RESTART
510 */
511 if (!(ka->sa.sa_flags & SA_RESTART)) {
512 regs->result = -EINTR;
513 break;
514 }
515 /* fallthrough */
516 case -ERESTARTNOINTR:
517 /* ERESTARTNOINTR means that the syscall should be
518 * called again after the signal handler returns.
519 */
520 regs->gpr[3] = regs->orig_gpr3;
521 regs->nip -= 4;
522 regs->result = 0;
523 break;
524 }
525}
526
527/*
528 * Note that 'init' is a special process: it doesn't get signals it doesn't
529 * want to handle. Thus you cannot kill init even with a SIGKILL even by
530 * mistake.
531 */
532int do_signal(sigset_t *oldset, struct pt_regs *regs)
533{
534 siginfo_t info;
535 int signr;
536 struct k_sigaction ka;
537
538 /*
539 * If the current thread is 32 bit - invoke the
540 * 32 bit signal handling code
541 */
542 if (test_thread_flag(TIF_32BIT))
543 return do_signal32(oldset, regs);
544
545 if (!oldset)
546 oldset = &current->blocked;
547
548 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
549 if (signr > 0) {
550 /* Whee! Actually deliver the signal. */
551 if (TRAP(regs) == 0x0C00)
552 syscall_restart(regs, &ka);
553
554 /*
555 * Reenable the DABR before delivering the signal to
556 * user space. The DABR will have been cleared if it
557 * triggered inside the kernel.
558 */
559 if (current->thread.dabr)
560 set_dabr(current->thread.dabr);
561
562 return handle_signal(signr, &ka, &info, oldset, regs);
563 }
564
565 if (TRAP(regs) == 0x0C00) { /* System Call! */
566 if ((int)regs->result == -ERESTARTNOHAND ||
567 (int)regs->result == -ERESTARTSYS ||
568 (int)regs->result == -ERESTARTNOINTR) {
569 regs->gpr[3] = regs->orig_gpr3;
570 regs->nip -= 4; /* Back up & retry system call */
571 regs->result = 0;
572 } else if ((int)regs->result == -ERESTART_RESTARTBLOCK) {
573 regs->gpr[0] = __NR_restart_syscall;
574 regs->nip -= 4;
575 regs->result = 0;
576 }
577 }
578
579 return 0;
580}
581EXPORT_SYMBOL(do_signal);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 19:29:14 -0500