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- /*
- * Copyright (C) 2000 Tilmann Bitterberg
- * (tilmann@bitterberg.de)
- *
- * RTAS (Runtime Abstraction Services) stuff
- * Intention is to provide a clean user interface
- * to use the RTAS.
- *
- * TODO:
- * Split off a header file and maybe move it to a different
- * location. Write Documentation on what the /proc/rtas/ entries
- * actually do.
- */
- #include <linux/errno.h>
- #include <linux/sched.h>
- #include <linux/proc_fs.h>
- #include <linux/stat.h>
- #include <linux/ctype.h>
- #include <linux/time.h>
- #include <linux/string.h>
- #include <linux/init.h>
- #include <linux/seq_file.h>
- #include <linux/bitops.h>
- #include <linux/rtc.h>
- #include <asm/uaccess.h>
- #include <asm/processor.h>
- #include <asm/io.h>
- #include <asm/prom.h>
- #include <asm/rtas.h>
- #include <asm/machdep.h> /* for ppc_md */
- #include <asm/time.h>
- /* Token for Sensors */
- #define KEY_SWITCH 0x0001
- #define ENCLOSURE_SWITCH 0x0002
- #define THERMAL_SENSOR 0x0003
- #define LID_STATUS 0x0004
- #define POWER_SOURCE 0x0005
- #define BATTERY_VOLTAGE 0x0006
- #define BATTERY_REMAINING 0x0007
- #define BATTERY_PERCENTAGE 0x0008
- #define EPOW_SENSOR 0x0009
- #define BATTERY_CYCLESTATE 0x000a
- #define BATTERY_CHARGING 0x000b
- /* IBM specific sensors */
- #define IBM_SURVEILLANCE 0x2328 /* 9000 */
- #define IBM_FANRPM 0x2329 /* 9001 */
- #define IBM_VOLTAGE 0x232a /* 9002 */
- #define IBM_DRCONNECTOR 0x232b /* 9003 */
- #define IBM_POWERSUPPLY 0x232c /* 9004 */
- /* Status return values */
- #define SENSOR_CRITICAL_HIGH 13
- #define SENSOR_WARNING_HIGH 12
- #define SENSOR_NORMAL 11
- #define SENSOR_WARNING_LOW 10
- #define SENSOR_CRITICAL_LOW 9
- #define SENSOR_SUCCESS 0
- #define SENSOR_HW_ERROR -1
- #define SENSOR_BUSY -2
- #define SENSOR_NOT_EXIST -3
- #define SENSOR_DR_ENTITY -9000
- /* Location Codes */
- #define LOC_SCSI_DEV_ADDR 'A'
- #define LOC_SCSI_DEV_LOC 'B'
- #define LOC_CPU 'C'
- #define LOC_DISKETTE 'D'
- #define LOC_ETHERNET 'E'
- #define LOC_FAN 'F'
- #define LOC_GRAPHICS 'G'
- /* reserved / not used 'H' */
- #define LOC_IO_ADAPTER 'I'
- /* reserved / not used 'J' */
- #define LOC_KEYBOARD 'K'
- #define LOC_LCD 'L'
- #define LOC_MEMORY 'M'
- #define LOC_NV_MEMORY 'N'
- #define LOC_MOUSE 'O'
- #define LOC_PLANAR 'P'
- #define LOC_OTHER_IO 'Q'
- #define LOC_PARALLEL 'R'
- #define LOC_SERIAL 'S'
- #define LOC_DEAD_RING 'T'
- #define LOC_RACKMOUNTED 'U' /* for _u_nit is rack mounted */
- #define LOC_VOLTAGE 'V'
- #define LOC_SWITCH_ADAPTER 'W'
- #define LOC_OTHER 'X'
- #define LOC_FIRMWARE 'Y'
- #define LOC_SCSI 'Z'
- /* Tokens for indicators */
- #define TONE_FREQUENCY 0x0001 /* 0 - 1000 (HZ)*/
- #define TONE_VOLUME 0x0002 /* 0 - 100 (%) */
- #define SYSTEM_POWER_STATE 0x0003
- #define WARNING_LIGHT 0x0004
- #define DISK_ACTIVITY_LIGHT 0x0005
- #define HEX_DISPLAY_UNIT 0x0006
- #define BATTERY_WARNING_TIME 0x0007
- #define CONDITION_CYCLE_REQUEST 0x0008
- #define SURVEILLANCE_INDICATOR 0x2328 /* 9000 */
- #define DR_ACTION 0x2329 /* 9001 */
- #define DR_INDICATOR 0x232a /* 9002 */
- /* 9003 - 9004: Vendor specific */
- /* 9006 - 9999: Vendor specific */
- /* other */
- #define MAX_SENSORS 17 /* I only know of 17 sensors */
- #define MAX_LINELENGTH 256
- #define SENSOR_PREFIX "ibm,sensor-"
- #define cel_to_fahr(x) ((x*9/5)+32)
- struct individual_sensor {
- unsigned int token;
- unsigned int quant;
- };
- struct rtas_sensors {
- struct individual_sensor sensor[MAX_SENSORS];
- unsigned int quant;
- };
- /* Globals */
- static struct rtas_sensors sensors;
- static struct device_node *rtas_node = NULL;
- static unsigned long power_on_time = 0; /* Save the time the user set */
- static char progress_led[MAX_LINELENGTH];
- static unsigned long rtas_tone_frequency = 1000;
- static unsigned long rtas_tone_volume = 0;
- /* ****************************************************************** */
- /* Declarations */
- static int ppc_rtas_sensors_show(struct seq_file *m, void *v);
- static int ppc_rtas_clock_show(struct seq_file *m, void *v);
- static ssize_t ppc_rtas_clock_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos);
- static int ppc_rtas_progress_show(struct seq_file *m, void *v);
- static ssize_t ppc_rtas_progress_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos);
- static int ppc_rtas_poweron_show(struct seq_file *m, void *v);
- static ssize_t ppc_rtas_poweron_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos);
- static ssize_t ppc_rtas_tone_freq_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos);
- static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v);
- static ssize_t ppc_rtas_tone_volume_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos);
- static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v);
- static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v);
- static int sensors_open(struct inode *inode, struct file *file)
- {
- return single_open(file, ppc_rtas_sensors_show, NULL);
- }
- static const struct file_operations ppc_rtas_sensors_operations = {
- .open = sensors_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int poweron_open(struct inode *inode, struct file *file)
- {
- return single_open(file, ppc_rtas_poweron_show, NULL);
- }
- static const struct file_operations ppc_rtas_poweron_operations = {
- .open = poweron_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .write = ppc_rtas_poweron_write,
- .release = single_release,
- };
- static int progress_open(struct inode *inode, struct file *file)
- {
- return single_open(file, ppc_rtas_progress_show, NULL);
- }
- static const struct file_operations ppc_rtas_progress_operations = {
- .open = progress_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .write = ppc_rtas_progress_write,
- .release = single_release,
- };
- static int clock_open(struct inode *inode, struct file *file)
- {
- return single_open(file, ppc_rtas_clock_show, NULL);
- }
- static const struct file_operations ppc_rtas_clock_operations = {
- .open = clock_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .write = ppc_rtas_clock_write,
- .release = single_release,
- };
- static int tone_freq_open(struct inode *inode, struct file *file)
- {
- return single_open(file, ppc_rtas_tone_freq_show, NULL);
- }
- static const struct file_operations ppc_rtas_tone_freq_operations = {
- .open = tone_freq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .write = ppc_rtas_tone_freq_write,
- .release = single_release,
- };
- static int tone_volume_open(struct inode *inode, struct file *file)
- {
- return single_open(file, ppc_rtas_tone_volume_show, NULL);
- }
- static const struct file_operations ppc_rtas_tone_volume_operations = {
- .open = tone_volume_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .write = ppc_rtas_tone_volume_write,
- .release = single_release,
- };
- static int rmo_buf_open(struct inode *inode, struct file *file)
- {
- return single_open(file, ppc_rtas_rmo_buf_show, NULL);
- }
- static const struct file_operations ppc_rtas_rmo_buf_ops = {
- .open = rmo_buf_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int ppc_rtas_find_all_sensors(void);
- static void ppc_rtas_process_sensor(struct seq_file *m,
- struct individual_sensor *s, int state, int error, const char *loc);
- static char *ppc_rtas_process_error(int error);
- static void get_location_code(struct seq_file *m,
- struct individual_sensor *s, const char *loc);
- static void check_location_string(struct seq_file *m, const char *c);
- static void check_location(struct seq_file *m, const char *c);
- static int __init proc_rtas_init(void)
- {
- if (!machine_is(pseries))
- return -ENODEV;
- rtas_node = of_find_node_by_name(NULL, "rtas");
- if (rtas_node == NULL)
- return -ENODEV;
- proc_create("powerpc/rtas/progress", S_IRUGO|S_IWUSR, NULL,
- &ppc_rtas_progress_operations);
- proc_create("powerpc/rtas/clock", S_IRUGO|S_IWUSR, NULL,
- &ppc_rtas_clock_operations);
- proc_create("powerpc/rtas/poweron", S_IWUSR|S_IRUGO, NULL,
- &ppc_rtas_poweron_operations);
- proc_create("powerpc/rtas/sensors", S_IRUGO, NULL,
- &ppc_rtas_sensors_operations);
- proc_create("powerpc/rtas/frequency", S_IWUSR|S_IRUGO, NULL,
- &ppc_rtas_tone_freq_operations);
- proc_create("powerpc/rtas/volume", S_IWUSR|S_IRUGO, NULL,
- &ppc_rtas_tone_volume_operations);
- proc_create("powerpc/rtas/rmo_buffer", S_IRUSR, NULL,
- &ppc_rtas_rmo_buf_ops);
- return 0;
- }
- __initcall(proc_rtas_init);
- static int parse_number(const char __user *p, size_t count, unsigned long *val)
- {
- char buf[40];
- char *end;
- if (count > 39)
- return -EINVAL;
- if (copy_from_user(buf, p, count))
- return -EFAULT;
- buf[count] = 0;
- *val = simple_strtoul(buf, &end, 10);
- if (*end && *end != '\n')
- return -EINVAL;
- return 0;
- }
- /* ****************************************************************** */
- /* POWER-ON-TIME */
- /* ****************************************************************** */
- static ssize_t ppc_rtas_poweron_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos)
- {
- struct rtc_time tm;
- unsigned long nowtime;
- int error = parse_number(buf, count, &nowtime);
- if (error)
- return error;
- power_on_time = nowtime; /* save the time */
- to_tm(nowtime, &tm);
- error = rtas_call(rtas_token("set-time-for-power-on"), 7, 1, NULL,
- tm.tm_year, tm.tm_mon, tm.tm_mday,
- tm.tm_hour, tm.tm_min, tm.tm_sec, 0 /* nano */);
- if (error)
- printk(KERN_WARNING "error: setting poweron time returned: %s\n",
- ppc_rtas_process_error(error));
- return count;
- }
- /* ****************************************************************** */
- static int ppc_rtas_poweron_show(struct seq_file *m, void *v)
- {
- if (power_on_time == 0)
- seq_printf(m, "Power on time not set\n");
- else
- seq_printf(m, "%lu\n",power_on_time);
- return 0;
- }
- /* ****************************************************************** */
- /* PROGRESS */
- /* ****************************************************************** */
- static ssize_t ppc_rtas_progress_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos)
- {
- unsigned long hex;
- if (count >= MAX_LINELENGTH)
- count = MAX_LINELENGTH -1;
- if (copy_from_user(progress_led, buf, count)) { /* save the string */
- return -EFAULT;
- }
- progress_led[count] = 0;
- /* Lets see if the user passed hexdigits */
- hex = simple_strtoul(progress_led, NULL, 10);
- rtas_progress ((char *)progress_led, hex);
- return count;
- /* clear the line */
- /* rtas_progress(" ", 0xffff);*/
- }
- /* ****************************************************************** */
- static int ppc_rtas_progress_show(struct seq_file *m, void *v)
- {
- if (progress_led[0])
- seq_printf(m, "%s\n", progress_led);
- return 0;
- }
- /* ****************************************************************** */
- /* CLOCK */
- /* ****************************************************************** */
- static ssize_t ppc_rtas_clock_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos)
- {
- struct rtc_time tm;
- unsigned long nowtime;
- int error = parse_number(buf, count, &nowtime);
- if (error)
- return error;
- to_tm(nowtime, &tm);
- error = rtas_call(rtas_token("set-time-of-day"), 7, 1, NULL,
- tm.tm_year, tm.tm_mon, tm.tm_mday,
- tm.tm_hour, tm.tm_min, tm.tm_sec, 0);
- if (error)
- printk(KERN_WARNING "error: setting the clock returned: %s\n",
- ppc_rtas_process_error(error));
- return count;
- }
- /* ****************************************************************** */
- static int ppc_rtas_clock_show(struct seq_file *m, void *v)
- {
- int ret[8];
- int error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret);
- if (error) {
- printk(KERN_WARNING "error: reading the clock returned: %s\n",
- ppc_rtas_process_error(error));
- seq_printf(m, "0");
- } else {
- unsigned int year, mon, day, hour, min, sec;
- year = ret[0]; mon = ret[1]; day = ret[2];
- hour = ret[3]; min = ret[4]; sec = ret[5];
- seq_printf(m, "%lu\n",
- mktime(year, mon, day, hour, min, sec));
- }
- return 0;
- }
- /* ****************************************************************** */
- /* SENSOR STUFF */
- /* ****************************************************************** */
- static int ppc_rtas_sensors_show(struct seq_file *m, void *v)
- {
- int i,j;
- int state, error;
- int get_sensor_state = rtas_token("get-sensor-state");
- seq_printf(m, "RTAS (RunTime Abstraction Services) Sensor Information\n");
- seq_printf(m, "Sensor\t\tValue\t\tCondition\tLocation\n");
- seq_printf(m, "********************************************************\n");
- if (ppc_rtas_find_all_sensors() != 0) {
- seq_printf(m, "\nNo sensors are available\n");
- return 0;
- }
- for (i=0; i<sensors.quant; i++) {
- struct individual_sensor *p = &sensors.sensor[i];
- char rstr[64];
- const char *loc;
- int llen, offs;
- sprintf (rstr, SENSOR_PREFIX"%04d", p->token);
- loc = of_get_property(rtas_node, rstr, &llen);
- /* A sensor may have multiple instances */
- for (j = 0, offs = 0; j <= p->quant; j++) {
- error = rtas_call(get_sensor_state, 2, 2, &state,
- p->token, j);
- ppc_rtas_process_sensor(m, p, state, error, loc);
- seq_putc(m, '\n');
- if (loc) {
- offs += strlen(loc) + 1;
- loc += strlen(loc) + 1;
- if (offs >= llen)
- loc = NULL;
- }
- }
- }
- return 0;
- }
- /* ****************************************************************** */
- static int ppc_rtas_find_all_sensors(void)
- {
- const unsigned int *utmp;
- int len, i;
- utmp = of_get_property(rtas_node, "rtas-sensors", &len);
- if (utmp == NULL) {
- printk (KERN_ERR "error: could not get rtas-sensors\n");
- return 1;
- }
- sensors.quant = len / 8; /* int + int */
- for (i=0; i<sensors.quant; i++) {
- sensors.sensor[i].token = *utmp++;
- sensors.sensor[i].quant = *utmp++;
- }
- return 0;
- }
- /* ****************************************************************** */
- /*
- * Builds a string of what rtas returned
- */
- static char *ppc_rtas_process_error(int error)
- {
- switch (error) {
- case SENSOR_CRITICAL_HIGH:
- return "(critical high)";
- case SENSOR_WARNING_HIGH:
- return "(warning high)";
- case SENSOR_NORMAL:
- return "(normal)";
- case SENSOR_WARNING_LOW:
- return "(warning low)";
- case SENSOR_CRITICAL_LOW:
- return "(critical low)";
- case SENSOR_SUCCESS:
- return "(read ok)";
- case SENSOR_HW_ERROR:
- return "(hardware error)";
- case SENSOR_BUSY:
- return "(busy)";
- case SENSOR_NOT_EXIST:
- return "(non existent)";
- case SENSOR_DR_ENTITY:
- return "(dr entity removed)";
- default:
- return "(UNKNOWN)";
- }
- }
- /* ****************************************************************** */
- /*
- * Builds a string out of what the sensor said
- */
- static void ppc_rtas_process_sensor(struct seq_file *m,
- struct individual_sensor *s, int state, int error, const char *loc)
- {
- /* Defined return vales */
- const char * key_switch[] = { "Off\t", "Normal\t", "Secure\t",
- "Maintenance" };
- const char * enclosure_switch[] = { "Closed", "Open" };
- const char * lid_status[] = { " ", "Open", "Closed" };
- const char * power_source[] = { "AC\t", "Battery",
- "AC & Battery" };
- const char * battery_remaining[] = { "Very Low", "Low", "Mid", "High" };
- const char * epow_sensor[] = {
- "EPOW Reset", "Cooling warning", "Power warning",
- "System shutdown", "System halt", "EPOW main enclosure",
- "EPOW power off" };
- const char * battery_cyclestate[] = { "None", "In progress",
- "Requested" };
- const char * battery_charging[] = { "Charging", "Discharching",
- "No current flow" };
- const char * ibm_drconnector[] = { "Empty", "Present", "Unusable",
- "Exchange" };
- int have_strings = 0;
- int num_states = 0;
- int temperature = 0;
- int unknown = 0;
- /* What kind of sensor do we have here? */
-
- switch (s->token) {
- case KEY_SWITCH:
- seq_printf(m, "Key switch:\t");
- num_states = sizeof(key_switch) / sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t", key_switch[state]);
- have_strings = 1;
- }
- break;
- case ENCLOSURE_SWITCH:
- seq_printf(m, "Enclosure switch:\t");
- num_states = sizeof(enclosure_switch) / sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t",
- enclosure_switch[state]);
- have_strings = 1;
- }
- break;
- case THERMAL_SENSOR:
- seq_printf(m, "Temp. (C/F):\t");
- temperature = 1;
- break;
- case LID_STATUS:
- seq_printf(m, "Lid status:\t");
- num_states = sizeof(lid_status) / sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t", lid_status[state]);
- have_strings = 1;
- }
- break;
- case POWER_SOURCE:
- seq_printf(m, "Power source:\t");
- num_states = sizeof(power_source) / sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t",
- power_source[state]);
- have_strings = 1;
- }
- break;
- case BATTERY_VOLTAGE:
- seq_printf(m, "Battery voltage:\t");
- break;
- case BATTERY_REMAINING:
- seq_printf(m, "Battery remaining:\t");
- num_states = sizeof(battery_remaining) / sizeof(char *);
- if (state < num_states)
- {
- seq_printf(m, "%s\t",
- battery_remaining[state]);
- have_strings = 1;
- }
- break;
- case BATTERY_PERCENTAGE:
- seq_printf(m, "Battery percentage:\t");
- break;
- case EPOW_SENSOR:
- seq_printf(m, "EPOW Sensor:\t");
- num_states = sizeof(epow_sensor) / sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t", epow_sensor[state]);
- have_strings = 1;
- }
- break;
- case BATTERY_CYCLESTATE:
- seq_printf(m, "Battery cyclestate:\t");
- num_states = sizeof(battery_cyclestate) /
- sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t",
- battery_cyclestate[state]);
- have_strings = 1;
- }
- break;
- case BATTERY_CHARGING:
- seq_printf(m, "Battery Charging:\t");
- num_states = sizeof(battery_charging) / sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t",
- battery_charging[state]);
- have_strings = 1;
- }
- break;
- case IBM_SURVEILLANCE:
- seq_printf(m, "Surveillance:\t");
- break;
- case IBM_FANRPM:
- seq_printf(m, "Fan (rpm):\t");
- break;
- case IBM_VOLTAGE:
- seq_printf(m, "Voltage (mv):\t");
- break;
- case IBM_DRCONNECTOR:
- seq_printf(m, "DR connector:\t");
- num_states = sizeof(ibm_drconnector) / sizeof(char *);
- if (state < num_states) {
- seq_printf(m, "%s\t",
- ibm_drconnector[state]);
- have_strings = 1;
- }
- break;
- case IBM_POWERSUPPLY:
- seq_printf(m, "Powersupply:\t");
- break;
- default:
- seq_printf(m, "Unknown sensor (type %d), ignoring it\n",
- s->token);
- unknown = 1;
- have_strings = 1;
- break;
- }
- if (have_strings == 0) {
- if (temperature) {
- seq_printf(m, "%4d /%4d\t", state, cel_to_fahr(state));
- } else
- seq_printf(m, "%10d\t", state);
- }
- if (unknown == 0) {
- seq_printf(m, "%s\t", ppc_rtas_process_error(error));
- get_location_code(m, s, loc);
- }
- }
- /* ****************************************************************** */
- static void check_location(struct seq_file *m, const char *c)
- {
- switch (c[0]) {
- case LOC_PLANAR:
- seq_printf(m, "Planar #%c", c[1]);
- break;
- case LOC_CPU:
- seq_printf(m, "CPU #%c", c[1]);
- break;
- case LOC_FAN:
- seq_printf(m, "Fan #%c", c[1]);
- break;
- case LOC_RACKMOUNTED:
- seq_printf(m, "Rack #%c", c[1]);
- break;
- case LOC_VOLTAGE:
- seq_printf(m, "Voltage #%c", c[1]);
- break;
- case LOC_LCD:
- seq_printf(m, "LCD #%c", c[1]);
- break;
- case '.':
- seq_printf(m, "- %c", c[1]);
- break;
- default:
- seq_printf(m, "Unknown location");
- break;
- }
- }
- /* ****************************************************************** */
- /*
- * Format:
- * ${LETTER}${NUMBER}[[-/]${LETTER}${NUMBER} [ ... ] ]
- * the '.' may be an abbreviation
- */
- static void check_location_string(struct seq_file *m, const char *c)
- {
- while (*c) {
- if (isalpha(*c) || *c == '.')
- check_location(m, c);
- else if (*c == '/' || *c == '-')
- seq_printf(m, " at ");
- c++;
- }
- }
- /* ****************************************************************** */
- static void get_location_code(struct seq_file *m, struct individual_sensor *s,
- const char *loc)
- {
- if (!loc || !*loc) {
- seq_printf(m, "---");/* does not have a location */
- } else {
- check_location_string(m, loc);
- }
- seq_putc(m, ' ');
- }
- /* ****************************************************************** */
- /* INDICATORS - Tone Frequency */
- /* ****************************************************************** */
- static ssize_t ppc_rtas_tone_freq_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos)
- {
- unsigned long freq;
- int error = parse_number(buf, count, &freq);
- if (error)
- return error;
- rtas_tone_frequency = freq; /* save it for later */
- error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
- TONE_FREQUENCY, 0, freq);
- if (error)
- printk(KERN_WARNING "error: setting tone frequency returned: %s\n",
- ppc_rtas_process_error(error));
- return count;
- }
- /* ****************************************************************** */
- static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "%lu\n", rtas_tone_frequency);
- return 0;
- }
- /* ****************************************************************** */
- /* INDICATORS - Tone Volume */
- /* ****************************************************************** */
- static ssize_t ppc_rtas_tone_volume_write(struct file *file,
- const char __user *buf, size_t count, loff_t *ppos)
- {
- unsigned long volume;
- int error = parse_number(buf, count, &volume);
- if (error)
- return error;
- if (volume > 100)
- volume = 100;
-
- rtas_tone_volume = volume; /* save it for later */
- error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
- TONE_VOLUME, 0, volume);
- if (error)
- printk(KERN_WARNING "error: setting tone volume returned: %s\n",
- ppc_rtas_process_error(error));
- return count;
- }
- /* ****************************************************************** */
- static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "%lu\n", rtas_tone_volume);
- return 0;
- }
- #define RMO_READ_BUF_MAX 30
- /* RTAS Userspace access */
- static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "%016lx %x\n", rtas_rmo_buf, RTAS_RMOBUF_MAX);
- return 0;
- }
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