blob: 60c9009ba77957b509f7baeb02e7a00612d7d1f2 [file] [log] [blame]
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <syslog.h>
#include <openbmc_intf.h>
#include <openbmc.h>
#include <gpio.h>
#include <gpio_configs.h>
/* ------------------------------------------------------------------------- */
static const gchar* dbus_object_path = "/org/openbmc/control";
static const gchar* instance_name = "power0";
static const gchar* dbus_name = "org.openbmc.control.Power";
static int g_pci_reset_held = 1;
static GpioConfigs g_gpio_configs;
static GDBusObjectManagerServer *manager = NULL;
time_t pgood_timeout_start = 0;
// TODO: Change to interrupt driven instead of polling
static gboolean
poll_pgood(gpointer user_data)
{
ControlPower *control_power = object_get_control_power((Object*)user_data);
Control* control = object_get_control((Object*)user_data);
//send the heartbeat
guint poll_int = control_get_poll_interval(control);
if(poll_int == 0)
{
g_print("ERROR PowerControl: Poll interval cannot be 0\n");
return FALSE;
}
//handle timeout
time_t current_time = time(NULL);
if(difftime(current_time,pgood_timeout_start) > control_power_get_pgood_timeout(control_power)
&& pgood_timeout_start != 0)
{
g_print("ERROR PowerControl: Pgood poll timeout\n");
// set timeout to 0 so timeout doesn't happen again
control_power_set_pgood_timeout(control_power,0);
pgood_timeout_start = 0;
return TRUE;
}
uint8_t pgood_state;
int rc = gpio_open(&g_gpio_configs.power_gpio.power_good_in);
if(rc != GPIO_OK) {
g_print("ERROR PowerControl: GPIO open error (gpio=%s,rc=%d)\n",
g_gpio_configs.power_gpio.power_good_in.name, rc);
return FALSE;
}
rc = gpio_read(&g_gpio_configs.power_gpio.power_good_in, &pgood_state);
gpio_close(&g_gpio_configs.power_gpio.power_good_in);
if(rc == GPIO_OK)
{
//if changed, set property and emit signal
if(pgood_state != control_power_get_pgood(control_power))
{
int i;
uint8_t reset_state;
control_power_set_pgood(control_power, pgood_state);
if(pgood_state == 0)
{
control_power_emit_power_lost(control_power);
control_emit_goto_system_state(control,"HOST_POWERED_OFF");
g_pci_reset_held = 1;
}
else
{
control_power_emit_power_good(control_power);
control_emit_goto_system_state(control,"HOST_POWERED_ON");
}
for(i = 0; i < g_gpio_configs.power_gpio.num_reset_outs; i++)
{
GPIO *reset_out = &g_gpio_configs.power_gpio.reset_outs[i];
rc = gpio_open(reset_out);
if(rc != GPIO_OK)
{
g_print("ERROR PowerControl: GPIO open error (gpio=%s,rc=%d)\n",
reset_out->name, rc);
continue;
}
reset_state = pgood_state ^ g_gpio_configs.power_gpio.reset_pols[i];
g_print("PowerControl: pgood: %d, setting reset %s to %d\n",
(int)pgood_state, reset_out->name, (int)reset_state);
gpio_write(reset_out, reset_state);
gpio_close(reset_out);
}
for(i = 0; i < g_gpio_configs.power_gpio.num_pci_reset_outs; i++)
{
GPIO *pci_reset_out = &g_gpio_configs.power_gpio.pci_reset_outs[i];
if(pgood_state == 1)
{
/*
* When powering on, hold PCI reset until
* the processor can forward clocks and control reset.
*/
if(g_gpio_configs.power_gpio.pci_reset_holds[i])
{
g_print("Holding pci reset: %s\n", pci_reset_out->name);
continue;
}
}
rc = gpio_open(pci_reset_out);
if(rc != GPIO_OK)
{
g_print("ERROR PowerControl: GPIO open error (gpio=%s,rc=%d)\n",
pci_reset_out->name, rc);
continue;
}
reset_state = pgood_state ^ g_gpio_configs.power_gpio.pci_reset_pols[i];
g_print("PowerControl: pgood: %d, setting pci reset %s to %d\n",
(int)pgood_state, pci_reset_out->name, (int)reset_state);
gpio_write(pci_reset_out, reset_state);
gpio_close(pci_reset_out);
}
}
} else {
g_print("ERROR PowerControl: GPIO read error (gpio=%s,rc=%d)\n",
g_gpio_configs.power_gpio.power_good_in.name, rc);
//return false so poll won't get called anymore
return FALSE;
}
//pgood is not at desired state yet
if(pgood_state != control_power_get_state(control_power) &&
control_power_get_pgood_timeout(control_power) > 0)
{
if(pgood_timeout_start == 0 ) {
pgood_timeout_start = current_time;
}
}
else
{
pgood_timeout_start = 0;
}
return TRUE;
}
/* Handler for BootProgress signal from BootProgress sensor */
static void
on_boot_progress(GDBusConnection *connection,
const gchar *sender_name,
const gchar *object_path,
const gchar *interface_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
gchar *boot_progress;
uint8_t pgood_state;
uint8_t reset_state;
int rc;
int i;
if(!parameters)
return;
/* prevent release again */
if(!g_pci_reset_held)
return;
g_variant_get(parameters, "(s)", &boot_progress);
/* Release PCI reset when FW boot progress goes beyond 'Baseboard Init' */
if(strcmp(boot_progress, "FW Progress, Baseboard Init") == 0)
return;
rc = gpio_open(&g_gpio_configs.power_gpio.power_good_in);
if(rc != GPIO_OK)
{
g_print("ERROR PowerControl: on_boot_progress(): GPIO open error (gpio=%s,rc=%d)\n",
g_gpio_configs.power_gpio.power_good_in.name, rc);
return;
}
rc = gpio_read(&g_gpio_configs.power_gpio.power_good_in, &pgood_state);
gpio_close(&g_gpio_configs.power_gpio.power_good_in);
if(rc != GPIO_OK || pgood_state != 1)
return;
for(i = 0; i < g_gpio_configs.power_gpio.num_pci_reset_outs; i++)
{
GPIO *pci_reset_out = &g_gpio_configs.power_gpio.pci_reset_outs[i];
if(!g_gpio_configs.power_gpio.pci_reset_holds[i])
continue;
rc = gpio_open(pci_reset_out);
if(rc != GPIO_OK)
{
g_print("ERROR PowerControl: GPIO open error (gpio=%s,rc=%d)\n",
pci_reset_out->name, rc);
continue;
}
reset_state = pgood_state ^ g_gpio_configs.power_gpio.pci_reset_pols[i];
g_print("PowerControl: pgood: %d, setting pci reset %s to %d\n",
(int)pgood_state, pci_reset_out->name, (int)reset_state);
gpio_write(pci_reset_out, reset_state);
gpio_close(pci_reset_out);
g_print("Released pci reset: %s - %s\n", pci_reset_out->name, boot_progress);
}
g_pci_reset_held = 0;
}
static gboolean
on_set_power_state(ControlPower *pwr,
GDBusMethodInvocation *invocation,
guint state,
gpointer user_data)
{
Control* control = object_get_control((Object*)user_data);
PowerGpio *power_gpio = &g_gpio_configs.power_gpio;
if(state > 1)
{
g_dbus_method_invocation_return_dbus_error(invocation,
"org.openbmc.ControlPower.Error.Failed",
"Invalid power state");
return TRUE;
}
// return from method call
control_power_complete_set_power_state(pwr,invocation);
if(state == control_power_get_state(pwr))
{
g_print("Power already at requested state: %d\n",state);
}
else
{
int error = 0;
do {
int i;
uint8_t power_up_out;
if(state == 1) {
control_emit_goto_system_state(control,"HOST_POWERING_ON");
} else {
control_emit_goto_system_state(control,"HOST_POWERING_OFF");
}
for (i = 0; i < power_gpio->num_power_up_outs; i++) {
GPIO *power_pin = &power_gpio->power_up_outs[i];
error = gpio_open(power_pin);
if(error != GPIO_OK) {
g_print("ERROR PowerControl: GPIO open error (gpio=%s,rc=%d)\n",
power_gpio->power_up_outs[i].name, error);
continue;
}
power_up_out = state ^ !power_gpio->power_up_pols[i];
g_print("PowerControl: setting power up %s to %d\n",
power_gpio->power_up_outs[i].name, (int)power_up_out);
error = gpio_write(power_pin, power_up_out);
if(error != GPIO_OK) {
continue;
}
gpio_close(power_pin);
}
if(error != GPIO_OK) { break; }
control_power_set_state(pwr,state);
} while(0);
if(error != GPIO_OK)
{
g_print("ERROR PowerControl: GPIO set power state (rc=%d)\n",error);
}
/* If there's a latch, it should be enabled following changes to the
* power pins' states. This commits the changes to the latch states. */
if (power_gpio->latch_out.name != NULL) {
int rc;
uint8_t latch_value = 0;
rc = gpio_open(&power_gpio->latch_out);
if (rc != GPIO_OK) {
/* Failures are non-fatal. */
g_print("PowerControl ERROR failed to open latch %s rc=%d\n",
power_gpio->latch_out.name, rc);
return TRUE;
}
/* Make the latch transparent for as brief of a time as possible. */
rc = gpio_write(&power_gpio->latch_out, 1);
if (rc != GPIO_OK) {
g_print("PowerControl ERROR failed to assert latch %s rc=%d\n",
power_gpio->latch_out.name, rc);
} else {
g_print("PowerControl asserted latch %s\n",
power_gpio->latch_out.name);
}
rc = gpio_write(&power_gpio->latch_out, 0);
if (rc != GPIO_OK) {
g_print("PowerControl ERROR failed to clear latch %s rc=%d\n",
power_gpio->latch_out.name, rc);
}
gpio_close(&power_gpio->latch_out);
}
}
return TRUE;
}
static gboolean
on_init(Control *control,
GDBusMethodInvocation *invocation,
gpointer user_data)
{
pgood_timeout_start = 0;
//guint poll_interval = control_get_poll_interval(control);
//g_timeout_add(poll_interval, poll_pgood, user_data);
control_complete_init(control,invocation);
return TRUE;
}
static gboolean
on_get_power_state(ControlPower *pwr,
GDBusMethodInvocation *invocation,
gpointer user_data)
{
guint pgood = control_power_get_pgood(pwr);
control_power_complete_get_power_state(pwr,invocation,pgood);
return TRUE;
}
static int
set_up_gpio(GDBusConnection *connection,
PowerGpio *power_gpio,
ControlPower* control_power)
{
int error = GPIO_OK;
int rc;
int i;
uint8_t pgood_state;
// get gpio device paths
if(power_gpio->latch_out.name != NULL) { /* latch is optional */
rc = gpio_init(connection, &power_gpio->latch_out);
if(rc != GPIO_OK) {
error = rc;
}
}
rc = gpio_init(connection, &power_gpio->power_good_in);
if(rc != GPIO_OK) {
error = rc;
}
for(int i = 0; i < power_gpio->num_power_up_outs; i++) {
rc = gpio_init(connection, &power_gpio->power_up_outs[i]);
if(rc != GPIO_OK) {
error = rc;
}
}
for(int i = 0; i < power_gpio->num_reset_outs; i++) {
rc = gpio_init(connection, &power_gpio->reset_outs[i]);
if(rc != GPIO_OK) {
error = rc;
}
}
for(int i = 0; i < power_gpio->num_pci_reset_outs; i++) {
rc = gpio_init(connection, &power_gpio->pci_reset_outs[i]);
if(rc != GPIO_OK) {
error = rc;
}
}
rc = gpio_open(&power_gpio->power_good_in);
if(rc != GPIO_OK) {
return rc;
}
rc = gpio_read(&power_gpio->power_good_in, &pgood_state);
if(rc != GPIO_OK) {
return rc;
}
gpio_close(&power_gpio->power_good_in);
control_power_set_pgood(control_power, pgood_state);
control_power_set_state(control_power, pgood_state);
g_print("Pgood state: %d\n", pgood_state);
return error;
}
static void
on_bus_acquired(GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
ObjectSkeleton *object;
cmdline *cmd = user_data;
if(cmd->argc < 3)
{
g_print("Usage: power_control.exe [poll interval] [timeout]\n");
return;
}
manager = g_dbus_object_manager_server_new(dbus_object_path);
gchar *s;
s = g_strdup_printf("%s/%s",dbus_object_path,instance_name);
object = object_skeleton_new(s);
g_free(s);
ControlPower* control_power = control_power_skeleton_new();
object_skeleton_set_control_power(object, control_power);
g_object_unref(control_power);
Control* control = control_skeleton_new();
object_skeleton_set_control(object, control);
g_object_unref(control);
//define method callbacks here
g_signal_connect(control_power,
"handle-set-power-state",
G_CALLBACK(on_set_power_state),
object); /* user_data */
g_signal_connect(control_power,
"handle-get-power-state",
G_CALLBACK(on_get_power_state),
NULL); /* user_data */
g_signal_connect(control,
"handle-init",
G_CALLBACK(on_init),
object); /* user_data */
/* Listen for BootProgress signal from BootProgress sensor */
g_dbus_connection_signal_subscribe(connection,
NULL, /* service */
NULL, /* interface_name */
"BootProgress", /* member: name of the signal */
"/org/openbmc/sensors/host/BootProgress", /* obj path */
NULL, /* arg0 */
G_DBUS_SIGNAL_FLAGS_NONE,
(GDBusSignalCallback) on_boot_progress,
object, /* user data */
NULL );
/* Export the object (@manager takes its own reference to @object) */
g_dbus_object_manager_server_set_connection(manager, connection);
g_dbus_object_manager_server_export(manager, G_DBUS_OBJECT_SKELETON(object));
g_object_unref(object);
if(read_gpios(connection, &g_gpio_configs) != TRUE) {
g_print("ERROR PowerControl: could not read power GPIO configuration\n");
}
int rc = set_up_gpio(connection, &g_gpio_configs.power_gpio, control_power);
if(rc != GPIO_OK) {
g_print("ERROR PowerControl: GPIO setup (rc=%d)\n",rc);
}
//start poll
pgood_timeout_start = 0;
int poll_interval = atoi(cmd->argv[1]);
int pgood_timeout = atoi(cmd->argv[2]);
if(poll_interval < 1000 || pgood_timeout <5) {
g_print("ERROR PowerControl: poll_interval < 1000 or pgood_timeout < 5\n");
} else {
control_set_poll_interval(control,poll_interval);
control_power_set_pgood_timeout(control_power,pgood_timeout);
g_timeout_add(poll_interval, poll_pgood, object);
}
}
static void
on_name_acquired(GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
}
static void
on_name_lost(GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
free_gpios(&g_gpio_configs);
}
/*----------------------------------------------------------------*/
/* Main Event Loop */
gint
main(gint argc, gchar *argv[])
{
GMainLoop *loop;
cmdline cmd;
cmd.argc = argc;
cmd.argv = argv;
guint id;
loop = g_main_loop_new(NULL, FALSE);
id = g_bus_own_name(DBUS_TYPE,
dbus_name,
G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT |
G_BUS_NAME_OWNER_FLAGS_REPLACE,
on_bus_acquired,
on_name_acquired,
on_name_lost,
&cmd,
NULL);
g_main_loop_run(loop);
g_bus_unown_name(id);
g_main_loop_unref(loop);
return 0;
}