v4.19.13 snapshot.
diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c
new file mode 100644
index 0000000..487dcd8
--- /dev/null
+++ b/arch/powerpc/kernel/rtas-proc.c
@@ -0,0 +1,765 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 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 <linux/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 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 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", 0644, NULL,
+ &ppc_rtas_progress_operations);
+ proc_create("powerpc/rtas/clock", 0644, NULL,
+ &ppc_rtas_clock_operations);
+ proc_create("powerpc/rtas/poweron", 0644, NULL,
+ &ppc_rtas_poweron_operations);
+ proc_create_single("powerpc/rtas/sensors", 0444, NULL,
+ ppc_rtas_sensors_show);
+ proc_create("powerpc/rtas/frequency", 0644, NULL,
+ &ppc_rtas_tone_freq_operations);
+ proc_create("powerpc/rtas/volume", 0644, NULL,
+ &ppc_rtas_tone_volume_operations);
+ proc_create_single("powerpc/rtas/rmo_buffer", 0400, NULL,
+ ppc_rtas_rmo_buf_show);
+ return 0;
+}
+
+__initcall(proc_rtas_init);
+
+static int parse_number(const char __user *p, size_t count, u64 *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_strtoull(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;
+ time64_t nowtime;
+ int error = parse_number(buf, count, &nowtime);
+ if (error)
+ return error;
+
+ power_on_time = nowtime; /* save the time */
+
+ rtc_time64_to_tm(nowtime, &tm);
+
+ error = rtas_call(rtas_token("set-time-for-power-on"), 7, 1, NULL,
+ tm.tm_year + 1900, tm.tm_mon + 1, 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;
+ time64_t nowtime;
+ int error = parse_number(buf, count, &nowtime);
+ if (error)
+ return error;
+
+ rtc_time64_to_tm(nowtime, &tm);
+ error = rtas_call(rtas_token("set-time-of-day"), 7, 1, NULL,
+ tm.tm_year + 1900, tm.tm_mon + 1, 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, "%lld\n",
+ mktime64(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", "Discharging",
+ "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)
+{
+ u64 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)
+{
+ u64 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;
+}