1 /** 2 * Copyright (C) 2017 IBM Corporation 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "targeting.hpp" 18 19 #include <endian.h> 20 21 #include <filesystem> 22 #include <phosphor-logging/elog-errors.hpp> 23 #include <phosphor-logging/elog.hpp> 24 #include <phosphor-logging/log.hpp> 25 #include <regex> 26 #include <xyz/openbmc_project/Common/File/error.hpp> 27 28 namespace openpower 29 { 30 namespace targeting 31 { 32 33 using namespace phosphor::logging; 34 namespace file_error = sdbusplus::xyz::openbmc_project::Common::File::Error; 35 36 int Target::getCFAMFD() 37 { 38 if (cfamFD.get() == nullptr) 39 { 40 cfamFD = 41 std::make_unique<openpower::util::FileDescriptor>(getCFAMPath()); 42 } 43 44 return cfamFD->get(); 45 } 46 47 std::unique_ptr<Target>& Targeting::getTarget(size_t pos) 48 { 49 auto search = [pos](const auto& t) { return t->getPos() == pos; }; 50 51 auto target = find_if(targets.begin(), targets.end(), search); 52 if (target == targets.end()) 53 { 54 throw std::runtime_error("Target not found: " + std::to_string(pos)); 55 } 56 else 57 { 58 return *target; 59 } 60 } 61 62 Targeting::Targeting(const std::string& fsiMasterDev, 63 const std::string& fsiSlaveDir) : 64 fsiMasterPath(fsiMasterDev), 65 fsiSlaveBasePath(fsiSlaveDir) 66 { 67 std::regex exp{"fsi1/slave@([0-9]{2}):00", std::regex::extended}; 68 69 // Always create P0, the FSI master. 70 targets.push_back(std::make_unique<Target>(0, fsiMasterPath)); 71 try 72 { 73 // Find the the remaining P9s dynamically based on which files show up 74 for (auto& file : std::filesystem::directory_iterator(fsiSlaveBasePath)) 75 { 76 std::smatch match; 77 std::string path = file.path(); 78 if (std::regex_search(path, match, exp)) 79 { 80 auto pos = atoi(match[1].str().c_str()); 81 if (pos == 0) 82 { 83 log<level::ERR>("Unexpected FSI slave device name found", 84 entry("DEVICE_NAME=%s", path.c_str())); 85 continue; 86 } 87 88 path += "/raw"; 89 90 targets.push_back(std::make_unique<Target>(pos, path)); 91 } 92 } 93 } 94 catch (std::filesystem::filesystem_error& e) 95 { 96 using metadata = xyz::openbmc_project::Common::File::Open; 97 98 elog<file_error::Open>(metadata::ERRNO(e.code().value()), 99 metadata::PATH(e.path1().c_str())); 100 } 101 102 auto sortTargets = [](const std::unique_ptr<Target>& left, 103 const std::unique_ptr<Target>& right) { 104 return left->getPos() < right->getPos(); 105 }; 106 std::sort(targets.begin(), targets.end(), sortTargets); 107 } 108 109 } // namespace targeting 110 } // namespace openpower 111