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 | * |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 30 | * @param i_breakpoints true = breakpoint special attn handling enabled |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 31 | * @return 0 = success |
| 32 | */ |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 33 | int handleSpecial(bool i_breakpoints); |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 34 | |
| 35 | /** |
| 36 | * @brief Notify Cronus over dbus interface |
| 37 | * |
| 38 | * @param i_proc Processor number with Special attention |
| 39 | * @param i_core Core number with special attention |
| 40 | * @param i_thread Thread number with special attention |
| 41 | */ |
| 42 | void notifyCronus(uint32_t i_proc, uint32_t i_core, uint32_t i_thread); |
| 43 | |
| 44 | /** |
Ben Tyner | 7e6611f | 2020-02-13 16:42:56 -0600 | [diff] [blame] | 45 | * @brief Start host diagnostic mode |
| 46 | * |
| 47 | * Start the host diagnostic mode systemd unit |
| 48 | */ |
| 49 | void startHostDiagnosticMode(); |
| 50 | |
| 51 | /** |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 52 | * @brief The main attention handler logic |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 53 | * |
| 54 | * @param i_breakpoints true = breakpoint special attn handling enabled |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 55 | */ |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 56 | void attnHandler(bool i_breakpoints) |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 57 | { |
| 58 | uint32_t isr_val, isr_mask; |
| 59 | uint32_t proc; |
| 60 | |
| 61 | // loop through processors looking for active attentions |
| 62 | pdbg_target* target; |
| 63 | pdbg_for_each_class_target("fsi", target) |
| 64 | { |
| 65 | if (PDBG_TARGET_ENABLED == pdbg_target_probe(target)) |
| 66 | { |
| 67 | proc = pdbg_target_index(target); // get processor number |
| 68 | |
| 69 | std::stringstream ss; // log message stream |
| 70 | ss << "[ATTN] checking processor " << proc << std::endl; |
| 71 | log<level::INFO>(ss.str().c_str()); |
| 72 | |
| 73 | // get active attentions on processor |
| 74 | if (0 != fsi_read(target, 0x1007, &isr_val)) |
| 75 | { |
| 76 | std::stringstream ss; // log message stream |
| 77 | ss << "[ATTN] Error! cfam read 0x1007 FAILED" << std::endl; |
| 78 | log<level::INFO>(ss.str().c_str()); |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | std::stringstream ss; // log message stream |
| 83 | ss << "[ATTN] cfam 0x1007 = 0x"; |
| 84 | ss << std::hex << std::setw(8) << std::setfill('0'); |
| 85 | ss << isr_val << std::endl; |
| 86 | log<level::INFO>(ss.str().c_str()); |
| 87 | |
| 88 | // get interrupt enabled special attentions mask |
| 89 | if (0 != fsi_read(target, 0x100d, &isr_mask)) |
| 90 | { |
| 91 | std::stringstream ss; // log message stream |
| 92 | ss << "[ATTN] Error! cfam read 0x100d FAILED" << std::endl; |
| 93 | log<level::INFO>(ss.str().c_str()); |
| 94 | } |
| 95 | else |
| 96 | { |
| 97 | std::stringstream ss; // log message stream |
| 98 | ss << "[ATTN] cfam 0x100d = 0x"; |
| 99 | ss << std::hex << std::setw(8) << std::setfill('0'); |
| 100 | ss << isr_mask << std::endl; |
| 101 | log<level::INFO>(ss.str().c_str()); |
| 102 | |
| 103 | // bit 0 on "left": bit 30 = SBE vital attention |
| 104 | if (isr_val & isr_mask & 0x00000002) |
| 105 | { |
| 106 | handleVital(); |
| 107 | } |
| 108 | |
| 109 | // bit 0 on "left": bit 1 = checkstop |
| 110 | if (isr_val & isr_mask & 0x40000000) |
| 111 | { |
| 112 | handleCheckstop(); |
| 113 | } |
| 114 | |
| 115 | // bit 0 on "left": bit 2 = special attention |
| 116 | if (isr_val & isr_mask & 0x20000000) |
| 117 | { |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 118 | handleSpecial(i_breakpoints); |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 119 | } |
| 120 | } // cfam 0x100d valid |
| 121 | } // cfam 0x1007 valid |
| 122 | } // fsi target enabled |
| 123 | } // next processor |
| 124 | |
| 125 | return; // checked all processors |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * @brief Handle SBE vital attention |
| 130 | */ |
| 131 | int handleVital() |
| 132 | { |
| 133 | int rc = 1; // vital attention handling not yet supported |
| 134 | |
| 135 | std::stringstream ss; // log message stream |
| 136 | ss << "[ATTN] vital" << std::endl; |
| 137 | log<level::INFO>(ss.str().c_str()); |
| 138 | |
| 139 | if (0 != rc) |
| 140 | { |
| 141 | std::stringstream ss; // log message stream |
| 142 | ss << "[ATTN] vital NOT handled" << std::endl; |
| 143 | log<level::INFO>(ss.str().c_str()); |
| 144 | } |
| 145 | |
| 146 | return rc; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * @brief Handle checkstop attention |
| 151 | */ |
| 152 | int handleCheckstop() |
| 153 | { |
| 154 | int rc = 1; // checkstop handling not yet supported |
| 155 | |
| 156 | std::stringstream ss; // log message stream |
| 157 | ss << "[ATTN] checkstop" << std::endl; |
| 158 | log<level::INFO>(ss.str().c_str()); |
| 159 | |
| 160 | if (0 != rc) |
| 161 | { |
| 162 | std::stringstream ss; // log message stream |
| 163 | ss << "[ATTN] checkstop NOT handled" << std::endl; |
| 164 | log<level::INFO>(ss.str().c_str()); |
| 165 | } |
| 166 | |
| 167 | // TODO recoverable errors? |
| 168 | |
| 169 | return rc; |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * @brief Handle special attention |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 174 | * |
| 175 | * @param i_breakpoints true = breakpoint special attn handling enabled |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 176 | */ |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 177 | int handleSpecial(bool i_breakpoints) |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 178 | { |
| 179 | int rc = 0; // special attention handling supported |
| 180 | |
| 181 | std::stringstream ss; // log message stream |
| 182 | |
| 183 | ss << "[ATTN] special" << std::endl; |
| 184 | |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 185 | // Right now we always handle breakpoint special attentions if breakpoint |
| 186 | // attn handling is enabled. This will eventually check if breakpoint attn |
| 187 | // handing is enabled AND there is a breakpoint pending. |
| 188 | if (true == i_breakpoints) |
| 189 | { |
| 190 | ss << "[ATTN] breakpoint" << std::endl; |
| 191 | log<level::INFO>(ss.str().c_str()); |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 192 | |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 193 | // Cronus will determine proc, core and thread so just notify |
| 194 | notifyCronus(0, 0, 0); // proc-0, core-0, thread-0 |
| 195 | } |
| 196 | // Right now if breakpoint attn handling is not enabled we will treat the |
| 197 | // special attention as a TI. This will eventually be changed to check |
| 198 | // whether a TI is active and handle it regardless of whether breakpoint |
| 199 | // handling is enbaled or not. |
| 200 | else |
| 201 | { |
| 202 | ss << "[ATTN] TI (terminate immediately)" << std::endl; |
| 203 | log<level::INFO>(ss.str().c_str()); |
Ben Tyner | 7e6611f | 2020-02-13 16:42:56 -0600 | [diff] [blame] | 204 | |
Ben Tyner | 970fd4f | 2020-02-19 13:46:42 -0600 | [diff] [blame] | 205 | // Start host diagnostic mode |
| 206 | startHostDiagnosticMode(); |
| 207 | } |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 208 | |
| 209 | // TODO recoverable errors? |
| 210 | |
| 211 | return rc; |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * @brief Notify Cronus over dbus interface |
| 216 | */ |
| 217 | void notifyCronus(uint32_t i_proc, uint32_t i_core, uint32_t i_thread) |
| 218 | { |
| 219 | std::stringstream ss; // log message stream |
| 220 | |
| 221 | // log status info |
| 222 | ss << "[ATTN] notify "; |
| 223 | ss << i_proc << ", " << i_core << ", " << i_thread << std::endl; |
| 224 | log<level::INFO>(ss.str().c_str()); |
| 225 | |
| 226 | // notify Cronus over dbus |
| 227 | auto bus = sdbusplus::bus::new_system(); |
| 228 | auto msg = bus.new_signal("/", "org.openbmc.cronus", "Brkpt"); |
| 229 | |
| 230 | std::array<uint32_t, 3> params{i_proc, i_core, i_thread}; |
| 231 | msg.append(params); |
| 232 | |
| 233 | msg.signal_send(); |
Ben Tyner | 7e6611f | 2020-02-13 16:42:56 -0600 | [diff] [blame] | 234 | |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * @brief Start host diagnostic mode |
| 240 | * */ |
| 241 | void startHostDiagnosticMode() |
| 242 | { |
| 243 | std::stringstream ss; // log message stream |
| 244 | |
| 245 | // log status info |
| 246 | ss << "[ATTN] start host diagnostic mode service" << std::endl; |
| 247 | log<level::INFO>(ss.str().c_str()); |
| 248 | |
| 249 | // Use the systemd service manager object interface to call the start unit |
| 250 | // method with the obmc-host-diagnostic-mode target. |
| 251 | auto bus = sdbusplus::bus::new_system(); |
| 252 | auto method = bus.new_method_call( |
| 253 | "org.freedesktop.systemd1", "/org/freedesktop/systemd1", |
| 254 | "org.freedesktop.systemd1.Manager", "StartUnit"); |
| 255 | |
| 256 | method.append("obmc-host-diagnostic-mode@0.target"); // unit to activate |
| 257 | method.append("replace"); // mode = replace conflicting queued jobs |
| 258 | bus.call_noreply(method); // start the service |
| 259 | |
| 260 | return; |
Ben Tyner | ef32015 | 2020-01-09 10:31:23 -0600 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | } // namespace attn |