diff options
Diffstat (limited to 'apphandler.cpp')
-rw-r--r-- | apphandler.cpp | 539 |
1 files changed, 539 insertions, 0 deletions
diff --git a/apphandler.cpp b/apphandler.cpp new file mode 100644 index 0000000..b8cc0aa --- /dev/null +++ b/apphandler.cpp @@ -0,0 +1,539 @@ +#include "apphandler.h" +#include "ipmid-api.h" +#include "ipmid.H" +#include <stdio.h> +#include <string.h> +#include <stdint.h> +#include <systemd/sd-bus.h> + +extern sd_bus *bus; + +void register_netfn_app_functions() __attribute__((constructor)); + +#define DEVICE_FW1 2 +#define DEVICE_FW2 3 +#define DEVICE_AUX 11 + +//--------------------------------------------------------------------- +// Called by Host on seeing a SMS_ATN bit set. Return a hardcoded +// value of 0x2 indicating we need Host read some data. +//------------------------------------------------------------------- +ipmi_ret_t ipmi_app_get_msg_flags(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) +{ + // Generic return from IPMI commands. + ipmi_ret_t rc = IPMI_CC_OK; + + printf("IPMI APP GET MSG FLAGS returning with [bit:2] set\n"); + + // From IPMI spec V2.0 for Get Message Flags Command : + // bit:[1] from LSB : 1b = Event Message Buffer Full. + // Return as 0 if Event Message Buffer is not supported, + // or when the Event Message buffer is disabled. + // TODO. For now. assume its not disabled and send "0x2" anyway: + + uint8_t set_event_msg_buffer_full = 0x2; + *data_len = sizeof(set_event_msg_buffer_full); + + // Pack the actual response + memcpy(response, &set_event_msg_buffer_full, *data_len); + + return rc; +} + +//------------------------------------------------------------------- +// Called by Host post response from Get_Message_Flags +//------------------------------------------------------------------- +ipmi_ret_t ipmi_app_read_event(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_OK; + printf("IPMI APP READ EVENT command received\n"); + + // TODO : For now, this is catering only to the Soft Power Off via OEM SEL + // mechanism. If we need to make this generically used for some + // other conditions, then we can take advantage of context pointer. + + struct oem_sel_timestamped soft_off = {0}; + *data_len = sizeof(struct oem_sel_timestamped); + + // either id[0] -or- id[1] can be filled in. We will use id[0] + soft_off.id[0] = SEL_OEM_ID_0; + soft_off.id[1] = SEL_OEM_ID_0; + soft_off.type = SEL_RECORD_TYPE_OEM; + + // Following 3 bytes are from IANA Manufactre_Id field. See below + soft_off.manuf_id[0]= 0x41; + soft_off.manuf_id[1]= 0xA7; + soft_off.manuf_id[2]= 0x00; + + // per IPMI spec NetFuntion for OEM + soft_off.netfun = 0x3A; + + // Mechanism to kick start soft shutdown. + soft_off.cmd = CMD_POWER; + soft_off.data[0] = SOFT_OFF; + + // All '0xFF' since unused. + memset(&soft_off.data[1], 0xFF, 3); + + // Pack the actual response + memcpy(response, &soft_off, *data_len); + return rc; +} + +ipmi_ret_t ipmi_app_set_acpi_power_state(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_OK; + *data_len = 0; + + printf("IPMI SET ACPI STATE Ignoring for now\n"); + return rc; +} + + +typedef struct +{ + char major; + char minor; + uint16_t d[2]; +} rev_t; + + +/* Currently only supports the vx.x-x-[-x] format Will return -1 if not in */ +/* the format this routine knows how to parse */ +/* version = v0.6-19-gf363f61-dirty */ +/* ^ ^ ^^ ^ */ +/* | | |----------|-- additional details */ +/* | |---------------- Minor */ +/* |------------------ Major */ +/* Additional details : If the option group exists it will force Auxiliary */ +/* Firmware Revision Information 4th byte to 1 indicating the build was */ +/* derived with additional edits */ +int convert_version(const char *p, rev_t *rev) +{ + char *s, *token; + char hexbyte[5]; + int l; + uint16_t commits; + + if (*p != 'v') + return -1; + p++; + + s = strdup(p); + token = strtok(s,".-"); + + rev->major = (int8_t) atoi(token); + + token = strtok(NULL, ".-"); + rev->minor = (int8_t) atoi(token); + + // Capture the number of commits on top of the minor tag. + // I'm using BE format like the ipmi spec asked for + token = strtok(NULL,".-"); + + if (token) { + commits = (int16_t) atoi(token); + rev->d[0] = (commits>>8) | (commits<<8); + + // commit number we skip + token = strtok(NULL,".-"); + + } else { + rev->d[0] = 0; + } + + // Any value of the optional parameter forces it to 1 + if (token) + token = strtok(NULL,".-"); + + rev->d[1] = (token != NULL) ? 1 : 0; + + free(s); + return 0; +} + +ipmi_ret_t ipmi_app_get_device_id(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_OK; + const char *busname = "org.openbmc.Inventory"; + const char *objname = "/org/openbmc/inventory/system/chassis/motherboard/bmc"; + const char *iface = "org.openbmc.InventoryItem"; + char *ver = NULL; + int r; + rev_t rev = {0}; + + // TODO: + // This value is the IANA number assigned to "IBM Platform Firmware + // Division", which is also used by our service processor. We may want + // a different number or at least a different version? + uint8_t dev_id[] = {0, 0, 0, 0, 2, 0xD, 0x41, 0xA7, 0x00, 0x43, 0x40, 0, 0, 0, 0}; + + // Data length + *data_len = sizeof(dev_id); + + r = sd_bus_get_property_string(bus,busname,objname,iface,"version", NULL, &ver); + if ( r < 0 ) { + fprintf(stderr, "Failed to obtain version property: %s\n", strerror(-r)); + } else { + r = convert_version(ver, &rev); + if( r >= 0 ) { + // bit7 identifies state of SDR repository, hence the mask + dev_id[DEVICE_FW1] |= 0x7F & rev.major; + + rev.minor = (rev.minor > 99 ? 99 : rev.minor); + dev_id[DEVICE_FW2] = rev.minor % 10 + (rev.minor / 10) * 16; + memcpy(&dev_id[DEVICE_AUX], rev.d, 4); + } + } + + // Pack the actual response + memcpy(response, &dev_id, *data_len); + return rc; +} + +ipmi_ret_t ipmi_app_get_device_guid(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) +{ + const char *busname = "org.openbmc.control.Chassis"; + const char *objname = "/org/openbmc/control/chassis0"; + const char *iface = "org.freedesktop.DBus.Properties"; + const char *chassis_iface = "org.openbmc.control.Chassis"; + sd_bus_message *reply = NULL; + sd_bus_error error = SD_BUS_ERROR_NULL; + int r = 0; + char *uuid = NULL; + + // UUID is in RFC4122 format. Ex: 61a39523-78f2-11e5-9862-e6402cfc3223 + // Per IPMI Spec 2.0 need to convert to 16 hex bytes and reverse the byte order + // Ex: 0x2332fc2c40e66298e511f2782395a361 + + const int resp_size = 16; // Response is 16 hex bytes per IPMI Spec + uint8_t resp_uuid[resp_size]; // Array to hold the formatted response + int resp_loc = resp_size-1; // Point resp end of array to save in reverse order + int i = 0; + char *tokptr = NULL; + char *id_octet = NULL; + + // Status code. + ipmi_ret_t rc = IPMI_CC_OK; + *data_len = 0; + + printf("IPMI GET DEVICE GUID\n"); + + // Call Get properties method with the interface and property name + r = sd_bus_call_method(bus,busname,objname,iface, + "Get",&error, &reply, "ss", + chassis_iface, "uuid"); + if (r < 0) + { + fprintf(stderr, "Failed to call Get Method: %s\n", strerror(-r)); + rc = IPMI_CC_UNSPECIFIED_ERROR; + goto finish; + } + + r = sd_bus_message_read(reply, "v", "s", &uuid); + if (r < 0 || uuid == NULL) + { + fprintf(stderr, "Failed to get a response: %s", strerror(-r)); + rc = IPMI_CC_RESPONSE_ERROR; + goto finish; + } + + // Traverse the UUID + id_octet = strtok_r(uuid, "-", &tokptr); // Get the UUID octects separated by dash + + if (id_octet == NULL) + { + // Error + fprintf(stderr, "Unexpected UUID format: %s", uuid); + rc = IPMI_CC_RESPONSE_ERROR; + goto finish; + } + + while (id_octet != NULL) + { + // Calculate the octet string size since it varies + // Divide it by 2 for the array size since 1 byte is built from 2 chars + int tmp_size = strlen(id_octet)/2; + + for(i = 0; i < tmp_size; i++) + { + char tmp_array[3] = {0}; // Holder of the 2 chars that will become a byte + strncpy(tmp_array, id_octet, 2); // 2 chars at a time + + int resp_byte = strtoul(tmp_array, NULL, 16); // Convert to hex byte + memcpy((void*)&resp_uuid[resp_loc], &resp_byte, 1); // Copy end to first + resp_loc--; + id_octet+=2; // Finished with the 2 chars, advance + } + id_octet=strtok_r(NULL, "-", &tokptr); // Get next octet + } + + // Data length + *data_len = resp_size; + + // Pack the actual response + memcpy(response, &resp_uuid, *data_len); + +finish: + sd_bus_error_free(&error); + reply = sd_bus_message_unref(reply); + + return rc; +} + +ipmi_ret_t ipmi_app_get_bt_capabilities(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) +{ + printf("Handling Netfn:[0x%X], Cmd:[0x%X]\n",netfn,cmd); + + // Status code. + ipmi_ret_t rc = IPMI_CC_OK; + + uint8_t str[] = {0x01, MAX_IPMI_BUFFER, MAX_IPMI_BUFFER, 0x0A, 0x01}; + + // Data length + *data_len = sizeof(str); + + // Pack the actual response + memcpy(response, &str, *data_len); + + return rc; +} + + +struct set_wd_data_t { + uint8_t t_use; + uint8_t t_action; + uint8_t preset; + uint8_t flags; + uint8_t ls; + uint8_t ms; +} __attribute__ ((packed)); + + + +ipmi_ret_t ipmi_app_set_watchdog(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) +{ + const char *busname = "org.openbmc.watchdog.Host"; + const char *objname = "/org/openbmc/watchdog/host0"; + const char *iface = "org.openbmc.Watchdog"; + sd_bus_message *reply = NULL; + sd_bus_error error = SD_BUS_ERROR_NULL; + int r = 0; + + set_wd_data_t *reqptr = (set_wd_data_t*) request; + uint16_t timer = 0; + uint32_t timer_ms = 0; + + *data_len = 0; + + // Get number of 100ms intervals + timer = (((uint16_t)reqptr->ms) << 8) + reqptr->ls; + // Get timer value in ms + timer_ms = timer * 100; + + printf("WATCHDOG SET Timer:[0x%X] 100ms intervals\n",timer); + + // Set watchdog timer + r = sd_bus_call_method(bus, busname, objname, iface, + "set", &error, &reply, "i", timer_ms); + if(r < 0) + { + fprintf(stderr, "Failed to call the SET method: %s\n", strerror(-r)); + goto finish; + } + + sd_bus_error_free(&error); + reply = sd_bus_message_unref(reply); + + // Stop the current watchdog if any + r = sd_bus_call_method(bus, busname, objname, iface, + "stop", &error, &reply, NULL); + if(r < 0) + { + fprintf(stderr, "Failed to call the STOP method: %s\n", strerror(-r)); + goto finish; + } + + if (reqptr->t_use & 0x40) + { + sd_bus_error_free(&error); + reply = sd_bus_message_unref(reply); + + // Start the watchdog if requested + r = sd_bus_call_method(bus, busname, objname, iface, + "start", &error, &reply, NULL); + if(r < 0) + { + fprintf(stderr, "Failed to call the START method: %s\n", strerror(-r)); + } + } + +finish: + sd_bus_error_free(&error); + reply = sd_bus_message_unref(reply); + + return (r < 0) ? -1 : IPMI_CC_OK; +} + + +ipmi_ret_t ipmi_app_reset_watchdog(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) +{ + const char *busname = "org.openbmc.watchdog.Host"; + const char *objname = "/org/openbmc/watchdog/host0"; + const char *iface = "org.openbmc.Watchdog"; + sd_bus_message *reply = NULL; + sd_bus_error error = SD_BUS_ERROR_NULL; + int r = 0; + + // Status code. + ipmi_ret_t rc = IPMI_CC_OK; + *data_len = 0; + + printf("WATCHDOG RESET\n"); + + // Refresh watchdog + r = sd_bus_call_method(bus, busname, objname, iface, + "poke", &error, &reply, NULL); + if (r < 0) { + fprintf(stderr, "Failed to add reset watchdog: %s\n", strerror(-r)); + rc = -1; + } + + sd_bus_error_free(&error); + reply = sd_bus_message_unref(reply); + + return rc; +} + +// ATTENTION: This ipmi function is very hardcoded on purpose +// OpenBMC does not fully support IPMI. This command is useful +// to have around because it enables testing of interfaces with +// the IPMI tool. +#define GET_CHANNEL_INFO_CHANNEL_OFFSET 0 +// IPMI Table 6-2 +#define IPMI_CHANNEL_TYPE_IPMB 1 +// IPMI Table 6-3 +#define IPMI_CHANNEL_MEDIUM_TYPE_OTHER 6 + +ipmi_ret_t ipmi_app_channel_info(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_OK; + uint8_t resp[] = { + 1, + IPMI_CHANNEL_MEDIUM_TYPE_OTHER, + IPMI_CHANNEL_TYPE_IPMB, + 1,0x41,0xA7,0x00,0,0}; + uint8_t *p = (uint8_t*) request; + + printf("IPMI APP GET CHANNEL INFO\n"); + + // The supported channels numbers are 1 and 8. + // Channel Number E is used as way to identify the current channel + // that the command is being is received from. + if (*p == 0xe || *p == 1 || *p == 8) { + + *data_len = sizeof(resp); + memcpy(response, resp, *data_len); + + } else { + rc = IPMI_CC_PARM_OUT_OF_RANGE; + *data_len = 0; + } + + return rc; +} + +ipmi_ret_t ipmi_app_set_bmc_global_enables(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_OK; + *data_len = 0; + + // Event and message logging enabled by default so return for now + printf("IPMI APP SET BMC GLOBAL ENABLES Ignoring for now\n"); + + return rc; +} + + + +ipmi_ret_t ipmi_app_wildcard_handler(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) +{ + printf("Handling WILDCARD Netfn:[0x%X], Cmd:[0x%X]\n",netfn, cmd); + + // Status code. + ipmi_ret_t rc = IPMI_CC_OK; + + *data_len = strlen("THIS IS WILDCARD"); + + // Now pack actual response + memcpy(response, "THIS IS WILDCARD", *data_len); + + return rc; +} + +void register_netfn_app_functions() +{ + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_GET_CAP_BIT); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_GET_CAP_BIT, NULL, ipmi_app_get_bt_capabilities); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_WILDCARD); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_WILDCARD, NULL, ipmi_app_wildcard_handler); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_RESET_WD); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_RESET_WD, NULL, ipmi_app_reset_watchdog); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_SET_WD); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_SET_WD, NULL, ipmi_app_set_watchdog); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_GET_DEVICE_ID); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_GET_DEVICE_ID, NULL, ipmi_app_get_device_id); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_GET_DEVICE_GUID); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_GET_DEVICE_GUID, NULL, ipmi_app_get_device_guid); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_SET_ACPI); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_SET_ACPI, NULL, ipmi_app_set_acpi_power_state); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_READ_EVENT); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_READ_EVENT, NULL, ipmi_app_read_event); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, + IPMI_CMD_SET_BMC_GLOBAL_ENABLES); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_SET_BMC_GLOBAL_ENABLES, NULL, + ipmi_app_set_bmc_global_enables); + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_GET_MSG_FLAGS); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_GET_MSG_FLAGS, NULL, ipmi_app_get_msg_flags); + + + printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_GET_CHAN_INFO); + ipmi_register_callback(NETFUN_APP, IPMI_CMD_GET_CHAN_INFO, NULL, ipmi_app_channel_info); + + + + return; +} + + |