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 <phosphor-logging/elog-errors.hpp>
22 #include <phosphor-logging/elog.hpp>
23 #include <phosphor-logging/log.hpp>
24 #include <xyz/openbmc_project/Common/File/error.hpp>
25
26 #include <filesystem>
27 #include <regex>
28
29 namespace openpower
30 {
31 namespace targeting
32 {
33
34 using namespace phosphor::logging;
35 namespace file_error = sdbusplus::xyz::openbmc_project::Common::File::Error;
36
getCFAMFD()37 int Target::getCFAMFD()
38 {
39 if (cfamFD.get() == nullptr)
40 {
41 cfamFD =
42 std::make_unique<openpower::util::FileDescriptor>(getCFAMPath());
43 }
44
45 return cfamFD->get();
46 }
47
getTarget(size_t pos)48 std::unique_ptr<Target>& Targeting::getTarget(size_t pos)
49 {
50 auto search = [pos](const auto& t) { return t->getPos() == pos; };
51
52 auto target = find_if(targets.begin(), targets.end(), search);
53 if (target == targets.end())
54 {
55 throw std::runtime_error("Target not found: " + std::to_string(pos));
56 }
57 else
58 {
59 return *target;
60 }
61 }
62
Targeting(const std::string & fsiMasterDev,const std::string & fsiSlaveDir)63 Targeting::Targeting(const std::string& fsiMasterDev,
64 const std::string& fsiSlaveDir) :
65 fsiMasterPath(fsiMasterDev),
66 fsiSlaveBasePath(fsiSlaveDir)
67 {
68 std::regex exp{"fsi1/slave@([0-9]{2}):00", std::regex::extended};
69
70 // Always create P0, the FSI master.
71 targets.push_back(std::make_unique<Target>(0, fsiMasterPath));
72 try
73 {
74 // Find the the remaining P9s dynamically based on which files show up
75 for (auto& file : std::filesystem::directory_iterator(fsiSlaveBasePath))
76 {
77 std::smatch match;
78 std::string path = file.path();
79 if (std::regex_search(path, match, exp))
80 {
81 auto pos = atoi(match[1].str().c_str());
82 if (pos == 0)
83 {
84 log<level::ERR>("Unexpected FSI slave device name found",
85 entry("DEVICE_NAME=%s", path.c_str()));
86 continue;
87 }
88
89 path += "/raw";
90
91 targets.push_back(std::make_unique<Target>(pos, path));
92 }
93 }
94 }
95 catch (const std::filesystem::filesystem_error& e)
96 {
97 using metadata = xyz::openbmc_project::Common::File::Open;
98
99 elog<file_error::Open>(metadata::ERRNO(e.code().value()),
100 metadata::PATH(e.path1().c_str()));
101 }
102
103 auto sortTargets = [](const std::unique_ptr<Target>& left,
104 const std::unique_ptr<Target>& right) {
105 return left->getPos() < right->getPos();
106 };
107 std::sort(targets.begin(), targets.end(), sortTargets);
108 }
109
110 } // namespace targeting
111 } // namespace openpower
112