xref: /openbmc/pldm/pldmd/pldmd.cpp (revision f264c08d50359f68e90dfeb22c3b4cb62d198c66)
1 
2 #include "common/flight_recorder.hpp"
3 #include "common/instance_id.hpp"
4 #include "common/transport.hpp"
5 #include "common/utils.hpp"
6 #include "fw-update/manager.hpp"
7 #include "invoker.hpp"
8 #include "platform-mc/dbus_to_terminus_effecters.hpp"
9 #include "platform-mc/manager.hpp"
10 #include "requester/handler.hpp"
11 #include "requester/mctp_endpoint_discovery.hpp"
12 #include "requester/request.hpp"
13 
14 #include <err.h>
15 #include <getopt.h>
16 #include <libpldm/base.h>
17 #include <libpldm/bios.h>
18 #include <libpldm/pdr.h>
19 #include <libpldm/platform.h>
20 #include <libpldm/transport.h>
21 #include <poll.h>
22 #include <sys/socket.h>
23 #include <sys/types.h>
24 #include <sys/un.h>
25 #include <unistd.h>
26 
27 #include <phosphor-logging/lg2.hpp>
28 #include <sdeventplus/event.hpp>
29 #include <sdeventplus/source/io.hpp>
30 #include <sdeventplus/source/signal.hpp>
31 #include <stdplus/signal.hpp>
32 
33 #include <cstdio>
34 #include <cstdlib>
35 #include <cstring>
36 #include <fstream>
37 #include <iomanip>
38 #include <iterator>
39 #include <memory>
40 #include <ranges>
41 #include <sstream>
42 #include <stdexcept>
43 #include <string>
44 #include <vector>
45 
46 PHOSPHOR_LOG2_USING;
47 
48 #ifdef LIBPLDMRESPONDER
49 #include "dbus_impl_pdr.hpp"
50 #include "host-bmc/dbus_to_event_handler.hpp"
51 #include "host-bmc/host_condition.hpp"
52 #include "host-bmc/host_pdr_handler.hpp"
53 #include "libpldmresponder/base.hpp"
54 #include "libpldmresponder/bios.hpp"
55 #include "libpldmresponder/fru.hpp"
56 #include "libpldmresponder/oem_handler.hpp"
57 #include "libpldmresponder/platform.hpp"
58 #include "libpldmresponder/platform_config.hpp"
59 #include "xyz/openbmc_project/PLDM/Event/server.hpp"
60 #endif
61 
62 #ifdef OEM_IBM
63 #include "oem_ibm.hpp"
64 #endif
65 
66 #ifdef OEM_AMPERE
67 #include "oem/ampere/oem_ampere.hpp"
68 #endif
69 
70 constexpr const char* PLDMService = "xyz.openbmc_project.PLDM";
71 
72 using namespace pldm;
73 using namespace sdeventplus;
74 using namespace sdeventplus::source;
75 using namespace pldm::responder;
76 using namespace pldm::utils;
77 using sdeventplus::source::Signal;
78 using namespace pldm::flightrecorder;
79 
interruptFlightRecorderCallBack(Signal &,const struct signalfd_siginfo *)80 void interruptFlightRecorderCallBack(Signal& /*signal*/,
81                                      const struct signalfd_siginfo*)
82 {
83     error("Received SIGUR1(10) Signal interrupt");
84     // obtain the flight recorder instance and dump the recorder
85     FlightRecorder::GetInstance().playRecorder();
86 }
87 
requestPLDMServiceName()88 void requestPLDMServiceName()
89 {
90     try
91     {
92         auto& bus = pldm::utils::DBusHandler::getBus();
93         bus.request_name(PLDMService);
94     }
95     catch (const sdbusplus::exception_t& e)
96     {
97         error("Failed to request D-Bus name {NAME} with error {ERROR}.", "NAME",
98               PLDMService, "ERROR", e);
99     }
100 }
101 
processRxMsg(const std::vector<uint8_t> & requestMsg,Invoker & invoker,requester::Handler<requester::Request> & handler,fw_update::Manager * fwManager,pldm_tid_t tid)102 static std::optional<Response> processRxMsg(
103     const std::vector<uint8_t>& requestMsg, Invoker& invoker,
104     requester::Handler<requester::Request>& handler,
105     fw_update::Manager* fwManager, pldm_tid_t tid)
106 {
107     uint8_t eid = tid;
108 
109     pldm_header_info hdrFields{};
110     auto hdr = reinterpret_cast<const pldm_msg_hdr*>(requestMsg.data());
111     if (PLDM_SUCCESS != unpack_pldm_header(hdr, &hdrFields))
112     {
113         error("Empty PLDM request header");
114         return std::nullopt;
115     }
116 
117     if (PLDM_RESPONSE != hdrFields.msg_type)
118     {
119         Response response;
120         auto request = reinterpret_cast<const pldm_msg*>(hdr);
121         size_t requestLen = requestMsg.size() - sizeof(struct pldm_msg_hdr);
122         try
123         {
124             if (hdrFields.pldm_type != PLDM_FWUP)
125             {
126                 response =
127                     invoker.handle(tid, hdrFields.pldm_type, hdrFields.command,
128                                    request, requestLen);
129             }
130             else
131             {
132                 response = fwManager->handleRequest(eid, hdrFields.command,
133                                                     request, requestLen);
134             }
135         }
136         catch (const std::out_of_range& e)
137         {
138             uint8_t completion_code = PLDM_ERROR_UNSUPPORTED_PLDM_CMD;
139             response.resize(sizeof(pldm_msg_hdr));
140             auto responseHdr = new (response.data()) pldm_msg_hdr;
141             pldm_header_info header{};
142             header.msg_type = PLDM_RESPONSE;
143             header.instance = hdrFields.instance;
144             header.pldm_type = hdrFields.pldm_type;
145             header.command = hdrFields.command;
146             if (PLDM_SUCCESS != pack_pldm_header(&header, responseHdr))
147             {
148                 error(
149                     "Failed to add response header for processing Rx, error - {ERROR}",
150                     "ERROR", e);
151                 return std::nullopt;
152             }
153             response.insert(response.end(), completion_code);
154         }
155         return response;
156     }
157     else if (PLDM_RESPONSE == hdrFields.msg_type)
158     {
159         auto response = reinterpret_cast<const pldm_msg*>(hdr);
160         size_t responseLen = requestMsg.size() - sizeof(struct pldm_msg_hdr);
161         handler.handleResponse(eid, hdrFields.instance, hdrFields.pldm_type,
162                                hdrFields.command, response, responseLen);
163     }
164     return std::nullopt;
165 }
166 
optionUsage(void)167 void optionUsage(void)
168 {
169     info("Usage: pldmd [options]");
170     info("Options:");
171     info(" [--verbose] - would enable verbosity");
172 }
173 
main(int argc,char ** argv)174 int main(int argc, char** argv)
175 {
176     bool verbose = false;
177     static struct option long_options[] = {
178         {"verbose", no_argument, nullptr, 'v'}, {nullptr, 0, nullptr, 0}};
179 
180     auto argflag = getopt_long(argc, argv, "v", long_options, nullptr);
181     switch (argflag)
182     {
183         case 'v':
184             verbose = true;
185             break;
186         case -1:
187             break;
188         default:
189             optionUsage();
190             exit(EXIT_FAILURE);
191     }
192     // Setup PLDM requester transport
193     auto hostEID = pldm::utils::readHostEID();
194     /* To maintain current behaviour until we have the infrastructure to find
195      * and use the correct TIDs */
196     pldm_tid_t TID = hostEID;
197     PldmTransport pldmTransport{};
198     auto event = Event::get_default();
199     auto& bus = pldm::utils::DBusHandler::getBus();
200     sdbusplus::server::manager_t objManager(bus,
201                                             "/xyz/openbmc_project/software");
202     sdbusplus::server::manager_t sensorObjManager(
203         bus, "/xyz/openbmc_project/sensors");
204 
205     InstanceIdDb instanceIdDb;
206     sdbusplus::server::manager_t inventoryManager(
207         bus, "/xyz/openbmc_project/inventory");
208 
209     Invoker invoker{};
210     requester::Handler<requester::Request> reqHandler(&pldmTransport, event,
211                                                       instanceIdDb, verbose);
212 
213     std::unique_ptr<pldm_pdr, decltype(&pldm_pdr_destroy)> pdrRepo(
214         pldm_pdr_init(), pldm_pdr_destroy);
215     if (!pdrRepo)
216     {
217         throw std::runtime_error("Failed to instantiate PDR repository");
218     }
219     DBusHandler dbusHandler;
220 
221     std::unique_ptr<platform_mc::Manager> platformManager =
222         std::make_unique<platform_mc::Manager>(event, reqHandler, instanceIdDb);
223 
224     std::unique_ptr<pldm::host_effecters::HostEffecterParser>
225         hostEffecterParser =
226             std::make_unique<pldm::host_effecters::HostEffecterParser>(
227                 &instanceIdDb, pldmTransport.getEventSource(), pdrRepo.get(),
228                 &dbusHandler, HOST_JSONS_DIR, &reqHandler,
229                 platformManager.get());
230 #ifdef LIBPLDMRESPONDER
231     using namespace pldm::state_sensor;
232     dbus_api::Host dbusImplHost(bus, "/xyz/openbmc_project/pldm");
233     std::unique_ptr<pldm_entity_association_tree,
234                     decltype(&pldm_entity_association_tree_destroy)>
235         entityTree(pldm_entity_association_tree_init(),
236                    pldm_entity_association_tree_destroy);
237     if (!entityTree)
238     {
239         throw std::runtime_error(
240             "Failed to instantiate general PDR entity association tree");
241     }
242     std::unique_ptr<pldm_entity_association_tree,
243                     decltype(&pldm_entity_association_tree_destroy)>
244         bmcEntityTree(pldm_entity_association_tree_init(),
245                       pldm_entity_association_tree_destroy);
246     if (!bmcEntityTree)
247     {
248         throw std::runtime_error(
249             "Failed to instantiate BMC PDR entity association tree");
250     }
251     std::shared_ptr<HostPDRHandler> hostPDRHandler;
252     std::unique_ptr<DbusToPLDMEvent> dbusToPLDMEventHandler;
253     std::unique_ptr<platform_config::Handler> platformConfigHandler{};
254     platformConfigHandler =
255         std::make_unique<platform_config::Handler>(PDR_JSONS_DIR);
256 
257     if (hostEID)
258     {
259         hostPDRHandler = std::make_shared<HostPDRHandler>(
260             pldmTransport.getEventSource(), hostEID, event, pdrRepo.get(),
261             EVENTS_JSONS_DIR, entityTree.get(), bmcEntityTree.get(),
262             instanceIdDb, &reqHandler);
263 
264         // HostFirmware interface needs access to hostPDR to know if host
265         // is running
266         dbusImplHost.setHostPdrObj(hostPDRHandler);
267 
268         dbusToPLDMEventHandler = std::make_unique<DbusToPLDMEvent>(
269             pldmTransport.getEventSource(), hostEID, instanceIdDb, &reqHandler);
270     }
271 
272     auto fruHandler = std::make_unique<fru::Handler>(
273         FRU_JSONS_DIR, FRU_MASTER_JSON, pdrRepo.get(), entityTree.get(),
274         bmcEntityTree.get());
275 
276     // FRU table is built lazily when a FRU command or Get PDR command is
277     // handled. To enable building FRU table, the FRU handler is passed to the
278     // Platform handler.
279 
280     pldm::responder::platform::EventMap addOnEventHandlers{
281         {PLDM_CPER_EVENT,
282          {[&platformManager](const pldm_msg* request, size_t payloadLength,
283                              uint8_t formatVersion, uint8_t tid,
284                              size_t eventDataOffset) {
285              return platformManager->handleCperEvent(
286                  request, payloadLength, formatVersion, tid, eventDataOffset);
287          }}},
288         {PLDM_MESSAGE_POLL_EVENT,
289          {[&platformManager](const pldm_msg* request, size_t payloadLength,
290                              uint8_t formatVersion, uint8_t tid,
291                              size_t eventDataOffset) {
292              return platformManager->handlePldmMessagePollEvent(
293                  request, payloadLength, formatVersion, tid, eventDataOffset);
294          }}},
295         {PLDM_SENSOR_EVENT,
296          {[&platformManager](const pldm_msg* request, size_t payloadLength,
297                              uint8_t formatVersion, uint8_t tid,
298                              size_t eventDataOffset) {
299              return platformManager->handleSensorEvent(
300                  request, payloadLength, formatVersion, tid, eventDataOffset);
301          }}}};
302 
303     auto platformHandler = std::make_unique<platform::Handler>(
304         &dbusHandler, hostEID, &instanceIdDb, PDR_JSONS_DIR, pdrRepo.get(),
305         hostPDRHandler.get(), dbusToPLDMEventHandler.get(), fruHandler.get(),
306         platformConfigHandler.get(), &reqHandler, event, true,
307         addOnEventHandlers);
308 
309     auto biosHandler = std::make_unique<bios::Handler>(
310         pldmTransport.getEventSource(), hostEID, &instanceIdDb, &reqHandler,
311         platformConfigHandler.get(), requestPLDMServiceName);
312 
313     auto baseHandler = std::make_unique<base::Handler>(event);
314 
315 #ifdef OEM_AMPERE
316     pldm::oem_ampere::OemAMPERE oemAMPERE(
317         &dbusHandler, pldmTransport.getEventSource(), pdrRepo.get(),
318         instanceIdDb, event, invoker, hostPDRHandler.get(),
319         platformHandler.get(), fruHandler.get(), baseHandler.get(),
320         biosHandler.get(), platformManager.get(), &reqHandler);
321 #endif
322 
323 #ifdef OEM_IBM
324     pldm::oem_ibm::OemIBM oemIBM(
325         &dbusHandler, pldmTransport.getEventSource(), hostEID, pdrRepo.get(),
326         instanceIdDb, event, invoker, hostPDRHandler.get(),
327         platformHandler.get(), fruHandler.get(), baseHandler.get(),
328         &reqHandler);
329 #endif
330 
331     invoker.registerHandler(PLDM_BIOS, std::move(biosHandler));
332     invoker.registerHandler(PLDM_PLATFORM, std::move(platformHandler));
333     invoker.registerHandler(PLDM_FRU, std::move(fruHandler));
334     invoker.registerHandler(PLDM_BASE, std::move(baseHandler));
335 
336     dbus_api::Pdr dbusImplPdr(bus, "/xyz/openbmc_project/pldm", pdrRepo.get());
337     sdbusplus::xyz::openbmc_project::PLDM::server::Event dbusImplEvent(
338         bus, "/xyz/openbmc_project/pldm");
339 
340 #endif
341 
342     std::unique_ptr<fw_update::Manager> fwManager =
343         std::make_unique<fw_update::Manager>(event, reqHandler, instanceIdDb);
344     std::unique_ptr<MctpDiscovery> mctpDiscoveryHandler =
345         std::make_unique<MctpDiscovery>(
346             bus, std::initializer_list<MctpDiscoveryHandlerIntf*>{
347                      fwManager.get(), platformManager.get()});
348     auto callback = [verbose, &invoker, &reqHandler, &fwManager, &pldmTransport,
349                      TID](IO& io, int fd, uint32_t revents) mutable {
350         if (!(revents & EPOLLIN))
351         {
352             return;
353         }
354         if (fd < 0)
355         {
356             return;
357         }
358 
359         int returnCode = 0;
360         void* requestMsg;
361         size_t recvDataLength;
362         returnCode = pldmTransport.recvMsg(TID, requestMsg, recvDataLength);
363 
364         if (returnCode == PLDM_REQUESTER_SUCCESS)
365         {
366             std::vector<uint8_t> requestMsgVec(
367                 static_cast<uint8_t*>(requestMsg),
368                 static_cast<uint8_t*>(requestMsg) + recvDataLength);
369             FlightRecorder::GetInstance().saveRecord(requestMsgVec, false);
370             if (verbose)
371             {
372                 printBuffer(Rx, requestMsgVec);
373             }
374             // process message and send response
375             auto response = processRxMsg(requestMsgVec, invoker, reqHandler,
376                                          fwManager.get(), TID);
377             if (response.has_value())
378             {
379                 FlightRecorder::GetInstance().saveRecord(*response, true);
380                 if (verbose)
381                 {
382                     printBuffer(Tx, *response);
383                 }
384 
385                 returnCode = pldmTransport.sendMsg(TID, (*response).data(),
386                                                    (*response).size());
387                 if (returnCode != PLDM_REQUESTER_SUCCESS)
388                 {
389                     warning(
390                         "Failed to send pldmTransport message for TID '{TID}', response code '{RETURN_CODE}'",
391                         "TID", TID, "RETURN_CODE", returnCode);
392                 }
393             }
394         }
395         // TODO check that we get here if mctp-demux dies?
396         else if (returnCode == PLDM_REQUESTER_RECV_FAIL)
397         {
398             // MCTP daemon has closed the socket this daemon is connected to.
399             // This may or may not be an error scenario, in either case the
400             // recovery mechanism for this daemon is to restart, and hence exit
401             // the event loop, that will cause this daemon to exit with a
402             // failure code.
403             error(
404                 "MCTP daemon closed the socket, IO exiting with response code '{RC}'",
405                 "RC", returnCode);
406             io.get_event().exit(0);
407         }
408         else
409         {
410             warning(
411                 "Failed to receive PLDM request for pldmTransport, response code '{RETURN_CODE}'",
412                 "RETURN_CODE", returnCode);
413         }
414         /* Free requestMsg after using */
415         free(requestMsg);
416     };
417 
418     bus.attach_event(event.get(), SD_EVENT_PRIORITY_NORMAL);
419 #ifndef SYSTEM_SPECIFIC_BIOS_JSON
420     try
421     {
422         bus.request_name(PLDMService);
423     }
424     catch (const sdbusplus::exception_t& e)
425     {
426         error("Failed to request D-Bus name {NAME} with error {ERROR}.", "NAME",
427               PLDMService, "ERROR", e);
428     }
429 #endif
430     IO io(event, pldmTransport.getEventSource(), EPOLLIN, std::move(callback));
431 #ifdef LIBPLDMRESPONDER
432     if (hostPDRHandler)
433     {
434         hostPDRHandler->setHostFirmwareCondition();
435     }
436 #endif
437     stdplus::signal::block(SIGUSR1);
438     sdeventplus::source::Signal sigUsr1(
439         event, SIGUSR1, std::bind_front(&interruptFlightRecorderCallBack));
440     int returnCode = event.loop();
441     if (returnCode)
442     {
443         exit(EXIT_FAILURE);
444     }
445 
446     exit(EXIT_SUCCESS);
447 }
448