Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 1 | #include <libpdbg.h> |
| 2 | |
| 3 | #include <phosphor-logging/log.hpp> |
| 4 | #include <sdbusplus/bus.hpp> |
| 5 | |
| 6 | #include <iomanip> |
| 7 | |
| 8 | using namespace phosphor::logging; |
| 9 | |
| 10 | namespace attn |
| 11 | { |
| 12 | |
| 13 | /** |
| 14 | * @brief Handle SBE vital attention |
| 15 | * |
| 16 | * @return 0 = success |
| 17 | */ |
| 18 | int handleVital(); |
| 19 | |
| 20 | /** |
| 21 | * @brief Handle checkstop attention |
| 22 | * |
| 23 | * @return 0 = success |
| 24 | */ |
| 25 | int handleCheckstop(); |
| 26 | |
| 27 | /** |
| 28 | * @brief Handle special attention |
| 29 | * |
| 30 | * @return 0 = success |
| 31 | */ |
| 32 | int handleSpecial(); |
| 33 | |
| 34 | /** |
| 35 | * @brief Notify Cronus over dbus interface |
| 36 | * |
| 37 | * @param i_proc Processor number with Special attention |
| 38 | * @param i_core Core number with special attention |
| 39 | * @param i_thread Thread number with special attention |
| 40 | */ |
| 41 | void notifyCronus(uint32_t i_proc, uint32_t i_core, uint32_t i_thread); |
| 42 | |
| 43 | /** |
| 44 | * @brief The main attention handler logic |
| 45 | */ |
| 46 | void attnHandler() |
| 47 | { |
| 48 | uint32_t isr_val, isr_mask; |
| 49 | uint32_t proc; |
| 50 | |
| 51 | // loop through processors looking for active attentions |
| 52 | pdbg_target* target; |
| 53 | pdbg_for_each_class_target("fsi", target) |
| 54 | { |
| 55 | if (PDBG_TARGET_ENABLED == pdbg_target_probe(target)) |
| 56 | { |
| 57 | proc = pdbg_target_index(target); // get processor number |
| 58 | |
| 59 | std::stringstream ss; // log message stream |
| 60 | ss << "[ATTN] checking processor " << proc << std::endl; |
| 61 | log<level::INFO>(ss.str().c_str()); |
| 62 | |
| 63 | // get active attentions on processor |
| 64 | if (0 != fsi_read(target, 0x1007, &isr_val)) |
| 65 | { |
| 66 | std::stringstream ss; // log message stream |
| 67 | ss << "[ATTN] Error! cfam read 0x1007 FAILED" << std::endl; |
| 68 | log<level::INFO>(ss.str().c_str()); |
| 69 | } |
| 70 | else |
| 71 | { |
| 72 | std::stringstream ss; // log message stream |
| 73 | ss << "[ATTN] cfam 0x1007 = 0x"; |
| 74 | ss << std::hex << std::setw(8) << std::setfill('0'); |
| 75 | ss << isr_val << std::endl; |
| 76 | log<level::INFO>(ss.str().c_str()); |
| 77 | |
| 78 | // get interrupt enabled special attentions mask |
| 79 | if (0 != fsi_read(target, 0x100d, &isr_mask)) |
| 80 | { |
| 81 | std::stringstream ss; // log message stream |
| 82 | ss << "[ATTN] Error! cfam read 0x100d FAILED" << std::endl; |
| 83 | log<level::INFO>(ss.str().c_str()); |
| 84 | } |
| 85 | else |
| 86 | { |
| 87 | std::stringstream ss; // log message stream |
| 88 | ss << "[ATTN] cfam 0x100d = 0x"; |
| 89 | ss << std::hex << std::setw(8) << std::setfill('0'); |
| 90 | ss << isr_mask << std::endl; |
| 91 | log<level::INFO>(ss.str().c_str()); |
| 92 | |
| 93 | // bit 0 on "left": bit 30 = SBE vital attention |
| 94 | if (isr_val & isr_mask & 0x00000002) |
| 95 | { |
| 96 | handleVital(); |
| 97 | } |
| 98 | |
| 99 | // bit 0 on "left": bit 1 = checkstop |
| 100 | if (isr_val & isr_mask & 0x40000000) |
| 101 | { |
| 102 | handleCheckstop(); |
| 103 | } |
| 104 | |
| 105 | // bit 0 on "left": bit 2 = special attention |
| 106 | if (isr_val & isr_mask & 0x20000000) |
| 107 | { |
| 108 | handleSpecial(); |
| 109 | } |
| 110 | } // cfam 0x100d valid |
| 111 | } // cfam 0x1007 valid |
| 112 | } // fsi target enabled |
| 113 | } // next processor |
| 114 | |
| 115 | return; // checked all processors |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * @brief Handle SBE vital attention |
| 120 | */ |
| 121 | int handleVital() |
| 122 | { |
| 123 | int rc = 1; // vital attention handling not yet supported |
| 124 | |
| 125 | std::stringstream ss; // log message stream |
| 126 | ss << "[ATTN] vital" << std::endl; |
| 127 | log<level::INFO>(ss.str().c_str()); |
| 128 | |
| 129 | if (0 != rc) |
| 130 | { |
| 131 | std::stringstream ss; // log message stream |
| 132 | ss << "[ATTN] vital NOT handled" << std::endl; |
| 133 | log<level::INFO>(ss.str().c_str()); |
| 134 | } |
| 135 | |
| 136 | return rc; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * @brief Handle checkstop attention |
| 141 | */ |
| 142 | int handleCheckstop() |
| 143 | { |
| 144 | int rc = 1; // checkstop handling not yet supported |
| 145 | |
| 146 | std::stringstream ss; // log message stream |
| 147 | ss << "[ATTN] checkstop" << std::endl; |
| 148 | log<level::INFO>(ss.str().c_str()); |
| 149 | |
| 150 | if (0 != rc) |
| 151 | { |
| 152 | std::stringstream ss; // log message stream |
| 153 | ss << "[ATTN] checkstop NOT handled" << std::endl; |
| 154 | log<level::INFO>(ss.str().c_str()); |
| 155 | } |
| 156 | |
| 157 | // TODO recoverable errors? |
| 158 | |
| 159 | return rc; |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * @brief Handle special attention |
| 164 | */ |
| 165 | int handleSpecial() |
| 166 | { |
| 167 | int rc = 0; // special attention handling supported |
| 168 | |
| 169 | std::stringstream ss; // log message stream |
| 170 | |
| 171 | ss << "[ATTN] special" << std::endl; |
| 172 | |
| 173 | // Currently we are only handling Cronus breakpoints |
| 174 | ss << "[ATTN] breakpoint" << std::endl; |
| 175 | log<level::INFO>(ss.str().c_str()); |
| 176 | |
| 177 | // Cronus will determine proc, core and thread so just notify |
| 178 | notifyCronus(0, 0, 0); // proc-0, core-0, thread-0 |
| 179 | |
| 180 | // TODO recoverable errors? |
| 181 | |
| 182 | return rc; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * @brief Notify Cronus over dbus interface |
| 187 | */ |
| 188 | void notifyCronus(uint32_t i_proc, uint32_t i_core, uint32_t i_thread) |
| 189 | { |
| 190 | std::stringstream ss; // log message stream |
| 191 | |
| 192 | // log status info |
| 193 | ss << "[ATTN] notify "; |
| 194 | ss << i_proc << ", " << i_core << ", " << i_thread << std::endl; |
| 195 | log<level::INFO>(ss.str().c_str()); |
| 196 | |
| 197 | // notify Cronus over dbus |
| 198 | auto bus = sdbusplus::bus::new_system(); |
| 199 | auto msg = bus.new_signal("/", "org.openbmc.cronus", "Brkpt"); |
| 200 | |
| 201 | std::array<uint32_t, 3> params{i_proc, i_core, i_thread}; |
| 202 | msg.append(params); |
| 203 | |
| 204 | msg.signal_send(); |
| 205 | } |
| 206 | |
| 207 | } // namespace attn |