sensorhandler.cpp - openbmc/phosphor-host-ipmid - Gitiles

 #include "sensorhandler.h"
 #include "host-ipmid/ipmid-api.h"
 #include <mapper.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdint.h>
 #include <systemd/sd-bus.h>
 #include "ipmid.hpp"

 extern int updateSensorRecordFromSSRAESC(const void *);
 extern sd_bus *bus;

 void register_netfn_sen_functions()   __attribute__((constructor));

 struct sensorTypemap_t {
     uint8_t number;
     uint8_t typecode;
     char dbusname[32];
 } ;


 sensorTypemap_t g_SensorTypeMap[] = {

     {0x01, 0x6F, "Temp"},
     {0x0C, 0x6F, "DIMM"},
     {0x0C, 0x6F, "MEMORY_BUFFER"},
     {0x07, 0x6F, "PROC"},
     {0x07, 0x6F, "CORE"},
     {0x07, 0x6F, "CPU"},
     {0x0F, 0x6F, "BootProgress"},
     {0xe9, 0x09, "OccStatus"},  // E9 is an internal mapping to handle sensor type code os 0x09
     {0xC3, 0x6F, "BootCount"},
     {0x1F, 0x6F, "OperatingSystemStatus"},
     {0x12, 0x6F, "SYSTEM_EVENT"},
     {0xC7, 0x03, "SYSTEM"},
     {0xC7, 0x03, "MAIN_PLANAR"},
     {0xC2, 0x6F, "PowerCap"},
     {0xFF, 0x00, ""},
 };


 struct sensor_data_t {
     uint8_t sennum;
 }  __attribute__ ((packed)) ;

 struct sensorreadingresp_t {
     uint8_t value;
     uint8_t operation;
     uint8_t indication[2];
 }  __attribute__ ((packed)) ;


 // Use a lookup table to find the interface name of a specific sensor
 // This will be used until an alternative is found.  this is the first
 // step for mapping IPMI
 int find_interface_property_fru_type(dbus_interface_t *interface, const char *property_name, char *property_value) {

     char  *str1;
     sd_bus_error error = SD_BUS_ERROR_NULL;
     sd_bus_message *reply = NULL, *m=NULL;


     int r;

     r = sd_bus_message_new_method_call(bus,&m,interface->bus,interface->path,"org.freedesktop.DBus.Properties","Get");
     if (r < 0) {
         fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
         fprintf(stderr,"Bus: %s Path: %s Interface: %s \n",
                 interface->bus, interface->path, interface->interface);
         goto final;
     }

     r = sd_bus_message_append(m, "ss", "org.openbmc.InventoryItem", property_name);
     if (r < 0) {
         fprintf(stderr, "Failed to create a input parameter: %s", strerror(-r));
         fprintf(stderr,"Bus: %s Path: %s Interface: %s \n",
                 interface->bus, interface->path, interface->interface);
         goto final;
     }

     r = sd_bus_call(bus, m, 0, &error, &reply);
     if (r < 0) {
         fprintf(stderr, "Failed to call the method: %s", strerror(-r));
         goto final;
     }

     r = sd_bus_message_read(reply, "v",  "s", &str1) ;
     if (r < 0) {
         fprintf(stderr, "Failed to get a response: %s", strerror(-r));
         goto final;
     }

     strcpy(property_value, str1);

 final:

     sd_bus_error_free(&error);
     m = sd_bus_message_unref(m);
     reply = sd_bus_message_unref(reply);

     return r;
 }


 // Use a lookup table to find the interface name of a specific sensor
 // This will be used until an alternative is found.  this is the first
 // step for mapping IPMI
 int find_openbmc_path(const char *type, const uint8_t num, dbus_interface_t *interface) {
     char  *busname = NULL;
     const char  *iface = "org.openbmc.managers.System";
     const char  *objname = "/org/openbmc/managers/System";
     char  *str1 = NULL, *str2, *str3;
     sd_bus_error error = SD_BUS_ERROR_NULL;
     sd_bus_message *reply = NULL;


     int r;
     r = mapper_get_service(bus, objname, &busname);
     if (r < 0) {
         fprintf(stderr, "Failed to get system manager busname: %s\n", strerror(-r));
         goto final;
     }

     r = sd_bus_call_method(bus,busname,objname,iface, "getObjectFromByteId",
                            &error, &reply, "sy", type, num);
     if (r < 0) {
         fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
         goto final;
     }

     r = sd_bus_message_read(reply, "(ss)", &str2, &str3);
     if (r < 0) {
         fprintf(stderr, "Failed to get a response: %s", strerror(-r));
         goto final;
     }

     r = mapper_get_service(bus, str2, &str1);
     if (r < 0) {
         fprintf(stderr, "Failed to get item busname: %s\n", strerror(-r));
         goto final;
     }

     strncpy(interface->bus, str1, MAX_DBUS_PATH);
     strncpy(interface->path, str2, MAX_DBUS_PATH);
     strncpy(interface->interface, str3, MAX_DBUS_PATH);

     interface->sensornumber = num;

 final:

     sd_bus_error_free(&error);
     reply = sd_bus_message_unref(reply);
     free(busname);
     free(str1);

     return r;
 }


 /////////////////////////////////////////////////////////////////////
 //
 // Routines used by ipmi commands wanting to interact on the dbus
 //
 /////////////////////////////////////////////////////////////////////
 int set_sensor_dbus_state_s(uint8_t number, const char *method, const char *value) {


     dbus_interface_t a;
     int r;
     sd_bus_error error = SD_BUS_ERROR_NULL;
     sd_bus_message *m=NULL;

     fprintf(ipmidbus, "Attempting to set a dbus Variant Sensor 0x%02x via %s with a value of %s\n",
         number, method, value);

     r = find_openbmc_path("SENSOR", number, &a);

     if (r < 0) {
         fprintf(stderr, "Failed to find Sensor 0x%02x\n", number);
         return 0;
     }

     r = sd_bus_message_new_method_call(bus,&m,a.bus,a.path,a.interface,method);
     if (r < 0) {
         fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
         goto final;
     }

     r = sd_bus_message_append(m, "v", "s", value);
     if (r < 0) {
         fprintf(stderr, "Failed to create a input parameter: %s", strerror(-r));
         goto final;
     }


     r = sd_bus_call(bus, m, 0, &error, NULL);
     if (r < 0) {
         fprintf(stderr, "Failed to call the method: %s", strerror(-r));
     }

 final:
     sd_bus_error_free(&error);
     m = sd_bus_message_unref(m);

     return 0;
 }
 int set_sensor_dbus_state_y(uint8_t number, const char *method, const uint8_t value) {


     dbus_interface_t a;
     int r;
     sd_bus_error error = SD_BUS_ERROR_NULL;
     sd_bus_message *m=NULL;

     fprintf(ipmidbus, "Attempting to set a dbus Variant Sensor 0x%02x via %s with a value of 0x%02x\n",
         number, method, value);

     r = find_openbmc_path("SENSOR", number, &a);

     if (r < 0) {
         fprintf(stderr, "Failed to find Sensor 0x%02x\n", number);
         return 0;
     }

     r = sd_bus_message_new_method_call(bus,&m,a.bus,a.path,a.interface,method);
     if (r < 0) {
         fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
         goto final;
     }

     r = sd_bus_message_append(m, "v", "i", value);
     if (r < 0) {
         fprintf(stderr, "Failed to create a input parameter: %s", strerror(-r));
         goto final;
     }


     r = sd_bus_call(bus, m, 0, &error, NULL);
     if (r < 0) {
         fprintf(stderr, "12 Failed to call the method: %s", strerror(-r));
     }

 final:
     sd_bus_error_free(&error);
     m = sd_bus_message_unref(m);

     return 0;
 }


 uint8_t dbus_to_sensor_type(char *p) {

     sensorTypemap_t *s = g_SensorTypeMap;
     char r=0;

     while (s->number != 0xFF) {
         if (!strcmp(s->dbusname,p)) {
             r = s->number;
              break;
         }
         s++;
     }


     if (s->number == 0xFF)
         printf("Failed to find Sensor Type %s\n", p);

     return r;
 }


 uint8_t dbus_to_sensor_type_from_dbus(dbus_interface_t *a) {
     char fru_type_name[64];
     int r= 0;

     r = find_interface_property_fru_type(a, "fru_type", fru_type_name);
     if (r<0) {
         fprintf(stderr, "Failed to get a fru type: %s", strerror(-r));
         return -1;
     } else {
         return dbus_to_sensor_type(fru_type_name);
     }
 }


 uint8_t find_sensor(uint8_t sensor_number) {

     dbus_interface_t a;
     char *p;
     char r;

     r = find_openbmc_path("SENSOR", sensor_number, &a);

     if (r < 0) { return 0; }

     // This is where sensors that do not exist in dbus but do
     // exist in the host code stop.  This should indicate it
     // is not a supported sensor
     if (a.interface[0] == 0) { return 0;}

     if (strstr(a.interface, "InventoryItem")) {
         // InventoryItems are real frus.  So need to get the
         // fru_type property
         r = dbus_to_sensor_type_from_dbus(&a);
     } else {
         // Non InventoryItems
         p = strrchr (a.path, '/');
         r = dbus_to_sensor_type(p+1);
     }

     return r;
  }


 ipmi_ret_t ipmi_sen_get_sensor_type(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     sensor_data_t *reqptr = (sensor_data_t*)request;
     ipmi_ret_t rc = IPMI_CC_OK;

     printf("IPMI GET_SENSOR_TYPE [0x%02X]\n",reqptr->sennum);

     // TODO Not sure what the System-event-sensor is suppose to return
     // need to ask Hostboot team
     unsigned char buf[] = {0x00,0x6F};

     buf[0] = find_sensor(reqptr->sennum);

     // HACK UNTIL Dbus gets updated or we find a better way
     if (buf[0] == 0) {
         rc = IPMI_CC_SENSOR_INVALID;
     }


     *data_len = sizeof(buf);
     memcpy(response, &buf, *data_len);

     return rc;
 }


 ipmi_ret_t ipmi_sen_set_sensor(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     sensor_data_t *reqptr = (sensor_data_t*)request;
     ipmi_ret_t rc = IPMI_CC_OK;

     printf("IPMI SET_SENSOR [0x%02x]\n",reqptr->sennum);

     updateSensorRecordFromSSRAESC(reqptr);

     *data_len=0;

     return rc;
 }


 ipmi_ret_t ipmi_sen_get_sensor_reading(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     sensor_data_t *reqptr = (sensor_data_t*)request;
     ipmi_ret_t rc = IPMI_CC_SENSOR_INVALID;
     uint8_t type;
     sensorreadingresp_t *resp = (sensorreadingresp_t*) response;
     int r;
     dbus_interface_t a;
     sd_bus *bus = ipmid_get_sd_bus_connection();
     sd_bus_message *reply = NULL;
     int reading = 0;


     printf("IPMI GET_SENSOR_READING [0x%02x]\n",reqptr->sennum);

     r = find_openbmc_path("SENSOR", reqptr->sennum, &a);

     if (r < 0) {
         fprintf(stderr, "Failed to find Sensor 0x%02x\n", reqptr->sennum);
         return IPMI_CC_SENSOR_INVALID;
     }

     type = find_sensor(reqptr->sennum);

     fprintf(stderr, "Bus: %s, Path: %s, Interface: %s\n", a.bus, a.path, a.interface);

     *data_len=0;

     switch(type) {
         case 0xC3:
         case 0xC2:
             r = sd_bus_get_property(bus,a.bus, a.path, a.interface, "value", NULL, &reply, "i");
             if (r < 0) {
                 fprintf(stderr, "Failed to call sd_bus_get_property:%d,  %s\n", r, strerror(-r));
                 fprintf(stderr, "Bus: %s, Path: %s, Interface: %s\n",
                         a.bus, a.path, a.interface);
                 break;
             }

             r = sd_bus_message_read(reply, "i", &reading);
             if (r < 0) {
                 fprintf(stderr, "Failed to read sensor: %s\n", strerror(-r));
                 break;
             }

             printf("Contents of a 0x%02x is 0x%02x\n", type, reading);

             rc = IPMI_CC_OK;
             *data_len=sizeof(sensorreadingresp_t);

             resp->value         = (uint8_t)reading;
             resp->operation     = 0;
             resp->indication[0] = 0;
             resp->indication[1] = 0;
             break;

         default:
             *data_len=0;
             rc = IPMI_CC_SENSOR_INVALID;
             break;
     }


     reply = sd_bus_message_unref(reply);

     return rc;
 }

 ipmi_ret_t ipmi_sen_wildcard(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     ipmi_ret_t rc = IPMI_CC_INVALID;

     printf("IPMI S/E Wildcard Netfn:[0x%X], Cmd:[0x%X]\n",netfn,cmd);
     *data_len = 0;

     return rc;
 }


 void register_netfn_sen_functions()
 {
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_WILDCARD);
     ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_WILDCARD, NULL, ipmi_sen_wildcard);

     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_TYPE);
     ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_TYPE, NULL, ipmi_sen_get_sensor_type);

     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_SET_SENSOR);
     ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_SET_SENSOR, NULL, ipmi_sen_set_sensor);

     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_READING);
     ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_READING, NULL, ipmi_sen_get_sensor_reading);

     return;
 }
	#include "sensorhandler.h"
	#include "host-ipmid/ipmid-api.h"
	#include <mapper.h>
	#include <stdio.h>
	#include <string.h>
	#include <stdint.h>
	#include <systemd/sd-bus.h>
	#include "ipmid.hpp"

	extern int updateSensorRecordFromSSRAESC(const void *);
	extern sd_bus *bus;

	void register_netfn_sen_functions() __attribute__((constructor));

	struct sensorTypemap_t {
	uint8_t number;
	uint8_t typecode;
	char dbusname[32];
	} ;


	sensorTypemap_t g_SensorTypeMap[] = {

	{0x01, 0x6F, "Temp"},
	{0x0C, 0x6F, "DIMM"},
	{0x0C, 0x6F, "MEMORY_BUFFER"},
	{0x07, 0x6F, "PROC"},
	{0x07, 0x6F, "CORE"},
	{0x07, 0x6F, "CPU"},
	{0x0F, 0x6F, "BootProgress"},
	{0xe9, 0x09, "OccStatus"}, // E9 is an internal mapping to handle sensor type code os 0x09
	{0xC3, 0x6F, "BootCount"},
	{0x1F, 0x6F, "OperatingSystemStatus"},
	{0x12, 0x6F, "SYSTEM_EVENT"},
	{0xC7, 0x03, "SYSTEM"},
	{0xC7, 0x03, "MAIN_PLANAR"},
	{0xC2, 0x6F, "PowerCap"},
	{0xFF, 0x00, ""},
	};


	struct sensor_data_t {
	uint8_t sennum;
	} __attribute__ ((packed)) ;

	struct sensorreadingresp_t {
	uint8_t value;
	uint8_t operation;
	uint8_t indication[2];
	} __attribute__ ((packed)) ;


	// Use a lookup table to find the interface name of a specific sensor
	// This will be used until an alternative is found. this is the first
	// step for mapping IPMI
	int find_interface_property_fru_type(dbus_interface_t interface, const char property_name, char *property_value) {

	char *str1;
	sd_bus_error error = SD_BUS_ERROR_NULL;
	sd_bus_message reply = NULL, m=NULL;


	int r;

	r = sd_bus_message_new_method_call(bus,&m,interface->bus,interface->path,"org.freedesktop.DBus.Properties","Get");
	if (r < 0) {
	fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
	fprintf(stderr,"Bus: %s Path: %s Interface: %s \n",
	interface->bus, interface->path, interface->interface);
	goto final;
	}

	r = sd_bus_message_append(m, "ss", "org.openbmc.InventoryItem", property_name);
	if (r < 0) {
	fprintf(stderr, "Failed to create a input parameter: %s", strerror(-r));
	fprintf(stderr,"Bus: %s Path: %s Interface: %s \n",
	interface->bus, interface->path, interface->interface);
	goto final;
	}

	r = sd_bus_call(bus, m, 0, &error, &reply);
	if (r < 0) {
	fprintf(stderr, "Failed to call the method: %s", strerror(-r));
	goto final;
	}

	r = sd_bus_message_read(reply, "v", "s", &str1) ;
	if (r < 0) {
	fprintf(stderr, "Failed to get a response: %s", strerror(-r));
	goto final;
	}

	strcpy(property_value, str1);

	final:

	sd_bus_error_free(&error);
	m = sd_bus_message_unref(m);
	reply = sd_bus_message_unref(reply);

	return r;
	}


	// Use a lookup table to find the interface name of a specific sensor
	// This will be used until an alternative is found. this is the first
	// step for mapping IPMI
	int find_openbmc_path(const char type, const uint8_t num, dbus_interface_t interface) {
	char *busname = NULL;
	const char *iface = "org.openbmc.managers.System";
	const char *objname = "/org/openbmc/managers/System";
	char str1 = NULL, str2, *str3;
	sd_bus_error error = SD_BUS_ERROR_NULL;
	sd_bus_message *reply = NULL;


	int r;
	r = mapper_get_service(bus, objname, &busname);
	if (r < 0) {
	fprintf(stderr, "Failed to get system manager busname: %s\n", strerror(-r));
	goto final;
	}

	r = sd_bus_call_method(bus,busname,objname,iface, "getObjectFromByteId",
	&error, &reply, "sy", type, num);
	if (r < 0) {
	fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
	goto final;
	}

	r = sd_bus_message_read(reply, "(ss)", &str2, &str3);
	if (r < 0) {
	fprintf(stderr, "Failed to get a response: %s", strerror(-r));
	goto final;
	}

	r = mapper_get_service(bus, str2, &str1);
	if (r < 0) {
	fprintf(stderr, "Failed to get item busname: %s\n", strerror(-r));
	goto final;
	}

	strncpy(interface->bus, str1, MAX_DBUS_PATH);
	strncpy(interface->path, str2, MAX_DBUS_PATH);
	strncpy(interface->interface, str3, MAX_DBUS_PATH);

	interface->sensornumber = num;

	final:

	sd_bus_error_free(&error);
	reply = sd_bus_message_unref(reply);
	free(busname);
	free(str1);

	return r;
	}


	/////////////////////////////////////////////////////////////////////
	//
	// Routines used by ipmi commands wanting to interact on the dbus
	//
	/////////////////////////////////////////////////////////////////////
	int set_sensor_dbus_state_s(uint8_t number, const char method, const char value) {


	dbus_interface_t a;
	int r;
	sd_bus_error error = SD_BUS_ERROR_NULL;
	sd_bus_message *m=NULL;

	fprintf(ipmidbus, "Attempting to set a dbus Variant Sensor 0x%02x via %s with a value of %s\n",
	number, method, value);

	r = find_openbmc_path("SENSOR", number, &a);

	if (r < 0) {
	fprintf(stderr, "Failed to find Sensor 0x%02x\n", number);
	return 0;
	}

	r = sd_bus_message_new_method_call(bus,&m,a.bus,a.path,a.interface,method);
	if (r < 0) {
	fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
	goto final;
	}

	r = sd_bus_message_append(m, "v", "s", value);
	if (r < 0) {
	fprintf(stderr, "Failed to create a input parameter: %s", strerror(-r));
	goto final;
	}


	r = sd_bus_call(bus, m, 0, &error, NULL);
	if (r < 0) {
	fprintf(stderr, "Failed to call the method: %s", strerror(-r));
	}

	final:
	sd_bus_error_free(&error);
	m = sd_bus_message_unref(m);

	return 0;
	}
	int set_sensor_dbus_state_y(uint8_t number, const char *method, const uint8_t value) {


	dbus_interface_t a;
	int r;
	sd_bus_error error = SD_BUS_ERROR_NULL;
	sd_bus_message *m=NULL;

	fprintf(ipmidbus, "Attempting to set a dbus Variant Sensor 0x%02x via %s with a value of 0x%02x\n",
	number, method, value);

	r = find_openbmc_path("SENSOR", number, &a);

	if (r < 0) {
	fprintf(stderr, "Failed to find Sensor 0x%02x\n", number);
	return 0;
	}

	r = sd_bus_message_new_method_call(bus,&m,a.bus,a.path,a.interface,method);
	if (r < 0) {
	fprintf(stderr, "Failed to create a method call: %s", strerror(-r));
	goto final;
	}

	r = sd_bus_message_append(m, "v", "i", value);
	if (r < 0) {
	fprintf(stderr, "Failed to create a input parameter: %s", strerror(-r));
	goto final;
	}


	r = sd_bus_call(bus, m, 0, &error, NULL);
	if (r < 0) {
	fprintf(stderr, "12 Failed to call the method: %s", strerror(-r));
	}

	final:
	sd_bus_error_free(&error);
	m = sd_bus_message_unref(m);

	return 0;
	}


	uint8_t dbus_to_sensor_type(char *p) {

	sensorTypemap_t *s = g_SensorTypeMap;
	char r=0;

	while (s->number != 0xFF) {
	if (!strcmp(s->dbusname,p)) {
	r = s->number;
	break;
	}
	s++;
	}


	if (s->number == 0xFF)
	printf("Failed to find Sensor Type %s\n", p);

	return r;
	}


	uint8_t dbus_to_sensor_type_from_dbus(dbus_interface_t *a) {
	char fru_type_name[64];
	int r= 0;

	r = find_interface_property_fru_type(a, "fru_type", fru_type_name);
	if (r<0) {
	fprintf(stderr, "Failed to get a fru type: %s", strerror(-r));
	return -1;
	} else {
	return dbus_to_sensor_type(fru_type_name);
	}
	}


	uint8_t find_sensor(uint8_t sensor_number) {

	dbus_interface_t a;
	char *p;
	char r;

	r = find_openbmc_path("SENSOR", sensor_number, &a);

	if (r < 0) { return 0; }

	// This is where sensors that do not exist in dbus but do
	// exist in the host code stop. This should indicate it
	// is not a supported sensor
	if (a.interface[0] == 0) { return 0;}

	if (strstr(a.interface, "InventoryItem")) {
	// InventoryItems are real frus. So need to get the
	// fru_type property
	r = dbus_to_sensor_type_from_dbus(&a);
	} else {
	// Non InventoryItems
	p = strrchr (a.path, '/');
	r = dbus_to_sensor_type(p+1);
	}

	return r;
	}





	ipmi_ret_t ipmi_sen_get_sensor_type(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	sensor_data_t reqptr = (sensor_data_t)request;
	ipmi_ret_t rc = IPMI_CC_OK;

	printf("IPMI GET_SENSOR_TYPE [0x%02X]\n",reqptr->sennum);

	// TODO Not sure what the System-event-sensor is suppose to return
	// need to ask Hostboot team
	unsigned char buf[] = {0x00,0x6F};

	buf[0] = find_sensor(reqptr->sennum);

	// HACK UNTIL Dbus gets updated or we find a better way
	if (buf[0] == 0) {
	rc = IPMI_CC_SENSOR_INVALID;
	}


	*data_len = sizeof(buf);
	memcpy(response, &buf, *data_len);

	return rc;
	}



	ipmi_ret_t ipmi_sen_set_sensor(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	sensor_data_t reqptr = (sensor_data_t)request;
	ipmi_ret_t rc = IPMI_CC_OK;

	printf("IPMI SET_SENSOR [0x%02x]\n",reqptr->sennum);

	updateSensorRecordFromSSRAESC(reqptr);

	*data_len=0;

	return rc;
	}


	ipmi_ret_t ipmi_sen_get_sensor_reading(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	sensor_data_t reqptr = (sensor_data_t)request;
	ipmi_ret_t rc = IPMI_CC_SENSOR_INVALID;
	uint8_t type;
	sensorreadingresp_t resp = (sensorreadingresp_t) response;
	int r;
	dbus_interface_t a;
	sd_bus *bus = ipmid_get_sd_bus_connection();
	sd_bus_message *reply = NULL;
	int reading = 0;


	printf("IPMI GET_SENSOR_READING [0x%02x]\n",reqptr->sennum);

	r = find_openbmc_path("SENSOR", reqptr->sennum, &a);

	if (r < 0) {
	fprintf(stderr, "Failed to find Sensor 0x%02x\n", reqptr->sennum);
	return IPMI_CC_SENSOR_INVALID;
	}

	type = find_sensor(reqptr->sennum);

	fprintf(stderr, "Bus: %s, Path: %s, Interface: %s\n", a.bus, a.path, a.interface);

	*data_len=0;

	switch(type) {
	case 0xC3:
	case 0xC2:
	r = sd_bus_get_property(bus,a.bus, a.path, a.interface, "value", NULL, &reply, "i");
	if (r < 0) {
	fprintf(stderr, "Failed to call sd_bus_get_property:%d, %s\n", r, strerror(-r));
	fprintf(stderr, "Bus: %s, Path: %s, Interface: %s\n",
	a.bus, a.path, a.interface);
	break;
	}

	r = sd_bus_message_read(reply, "i", &reading);
	if (r < 0) {
	fprintf(stderr, "Failed to read sensor: %s\n", strerror(-r));
	break;
	}

	printf("Contents of a 0x%02x is 0x%02x\n", type, reading);

	rc = IPMI_CC_OK;
	*data_len=sizeof(sensorreadingresp_t);

	resp->value = (uint8_t)reading;
	resp->operation = 0;
	resp->indication[0] = 0;
	resp->indication[1] = 0;
	break;

	default:
	*data_len=0;
	rc = IPMI_CC_SENSOR_INVALID;
	break;
	}


	reply = sd_bus_message_unref(reply);

	return rc;
	}

	ipmi_ret_t ipmi_sen_wildcard(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	ipmi_ret_t rc = IPMI_CC_INVALID;

	printf("IPMI S/E Wildcard Netfn:[0x%X], Cmd:[0x%X]\n",netfn,cmd);
	*data_len = 0;

	return rc;
	}


	void register_netfn_sen_functions()
	{
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_WILDCARD);
	ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_WILDCARD, NULL, ipmi_sen_wildcard);

	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_TYPE);
	ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_TYPE, NULL, ipmi_sen_get_sensor_type);

	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_SET_SENSOR);
	ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_SET_SENSOR, NULL, ipmi_sen_set_sensor);

	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_READING);
	ipmi_register_callback(NETFUN_SENSOR, IPMI_CMD_GET_SENSOR_READING, NULL, ipmi_sen_get_sensor_reading);

	return;
	}