1a2056e9cSWilly Tu // Copyright 2021 Google LLC 2a2056e9cSWilly Tu // 3a2056e9cSWilly Tu // Licensed under the Apache License, Version 2.0 (the "License"); 4a2056e9cSWilly Tu // you may not use this file except in compliance with the License. 5a2056e9cSWilly Tu // You may obtain a copy of the License at 6a2056e9cSWilly Tu // 7a2056e9cSWilly Tu // http://www.apache.org/licenses/LICENSE-2.0 8a2056e9cSWilly Tu // 9a2056e9cSWilly Tu // Unless required by applicable law or agreed to in writing, software 10a2056e9cSWilly Tu // distributed under the License is distributed on an "AS IS" BASIS, 11a2056e9cSWilly Tu // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12a2056e9cSWilly Tu // See the License for the specific language governing permissions and 13a2056e9cSWilly Tu // limitations under the License. 144d49ae65SPatrick Venture 154d49ae65SPatrick Venture #include "cpld.hpp" 164d49ae65SPatrick Venture 170e9aae5dSPatrick Venture #include "commands.hpp" 18bb90d4fdSPatrick Venture #include "errors.hpp" 19bb90d4fdSPatrick Venture #include "handler.hpp" 204d49ae65SPatrick Venture 21ce07ee0aSPatrick Venture #include <cstring> 22ff3cd8e9SWilly Tu #include <ipmid/api-types.hpp> 23*b4e3704cSWilly Tu #include <span> 24ff3cd8e9SWilly Tu #include <vector> 254d49ae65SPatrick Venture 264d49ae65SPatrick Venture namespace google 274d49ae65SPatrick Venture { 284d49ae65SPatrick Venture namespace ipmi 294d49ae65SPatrick Venture { 304d49ae65SPatrick Venture 314d49ae65SPatrick Venture struct CpldRequest 324d49ae65SPatrick Venture { 334d49ae65SPatrick Venture uint8_t id; 344d49ae65SPatrick Venture } __attribute__((packed)); 354d49ae65SPatrick Venture 364d49ae65SPatrick Venture // 374d49ae65SPatrick Venture // Handle reading the cpld version from the tmpfs. 384d49ae65SPatrick Venture // 39*b4e3704cSWilly Tu Resp cpldVersion(std::span<const uint8_t> data, const HandlerInterface* handler) 404d49ae65SPatrick Venture { 41acd5423aSPatrick Venture struct CpldRequest request; 42acd5423aSPatrick Venture 43ff3cd8e9SWilly Tu if (data.size() < sizeof(request)) 444d49ae65SPatrick Venture { 45ce07ee0aSPatrick Venture std::fprintf(stderr, "Invalid command length: %u\n", 46ff3cd8e9SWilly Tu static_cast<uint32_t>(data.size())); 47ff3cd8e9SWilly Tu return ::ipmi::responseReqDataLenInvalid(); 484d49ae65SPatrick Venture } 494d49ae65SPatrick Venture 50ff3cd8e9SWilly Tu // data[0] is the CPLD id. "/run/cpld{id}.version" is what we read. 514d49ae65SPatrick Venture // Verified that this cast actually returns the value 255 and not something 52ff3cd8e9SWilly Tu // negative in the case where data[0] is 0xff. However, it looks weird 534d49ae65SPatrick Venture // since I would expect int(uint8(0xff)) to be -1. So, just cast it 544d49ae65SPatrick Venture // unsigned. we're casting to an int width to avoid it thinking it's a 554d49ae65SPatrick Venture // letter, because it does that. 56ff3cd8e9SWilly Tu std::memcpy(&request, data.data(), sizeof(request)); 574d49ae65SPatrick Venture 584d49ae65SPatrick Venture try 594d49ae65SPatrick Venture { 60bb90d4fdSPatrick Venture auto values = 61bb90d4fdSPatrick Venture handler->getCpldVersion(static_cast<unsigned int>(request.id)); 624d49ae65SPatrick Venture 634d49ae65SPatrick Venture // Truncate if the version is too high (documented). 64ff3cd8e9SWilly Tu auto major = std::get<0>(values); 65ff3cd8e9SWilly Tu auto minor = std::get<1>(values); 66ff3cd8e9SWilly Tu auto point = std::get<2>(values); 67ff3cd8e9SWilly Tu auto subpoint = std::get<3>(values); 684d49ae65SPatrick Venture 69ff3cd8e9SWilly Tu return ::ipmi::responseSuccess( 70ff3cd8e9SWilly Tu SysOEMCommands::SysCpldVersion, 71ff3cd8e9SWilly Tu std::vector<std::uint8_t>{major, minor, point, subpoint}); 724d49ae65SPatrick Venture } 73bb90d4fdSPatrick Venture catch (const IpmiException& e) 74bb90d4fdSPatrick Venture { 75ff3cd8e9SWilly Tu return ::ipmi::response(e.getIpmiError()); 76bb90d4fdSPatrick Venture } 77bb90d4fdSPatrick Venture } 784d49ae65SPatrick Venture 794d49ae65SPatrick Venture } // namespace ipmi 804d49ae65SPatrick Venture } // namespace google 81