1 /* 2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator 3 * 4 * RTAS events handling 5 * 6 * Copyright (c) 2012 David Gibson, IBM Corporation. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 * 26 */ 27 #include "cpu.h" 28 #include "sysemu/sysemu.h" 29 #include "sysemu/char.h" 30 #include "hw/qdev.h" 31 #include "sysemu/device_tree.h" 32 33 #include "hw/ppc/spapr.h" 34 #include "hw/ppc/spapr_vio.h" 35 36 #include <libfdt.h> 37 38 struct rtas_error_log { 39 uint32_t summary; 40 #define RTAS_LOG_VERSION_MASK 0xff000000 41 #define RTAS_LOG_VERSION_6 0x06000000 42 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 43 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 44 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 45 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 46 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 47 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 48 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 49 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 50 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 51 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 52 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 53 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 54 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 55 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 56 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 57 #define RTAS_LOG_INITIATOR_CPU 0x00001000 58 #define RTAS_LOG_INITIATOR_PCI 0x00002000 59 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 60 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 61 #define RTAS_LOG_TARGET_MASK 0x00000f00 62 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 63 #define RTAS_LOG_TARGET_CPU 0x00000100 64 #define RTAS_LOG_TARGET_PCI 0x00000200 65 #define RTAS_LOG_TARGET_MEMORY 0x00000400 66 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 67 #define RTAS_LOG_TYPE_MASK 0x000000ff 68 #define RTAS_LOG_TYPE_OTHER 0x00000000 69 #define RTAS_LOG_TYPE_RETRY 0x00000001 70 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 71 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 72 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 73 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 74 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 75 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 76 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 77 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 78 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a 79 #define RTAS_LOG_TYPE_EPOW 0x00000040 80 uint32_t extended_length; 81 } QEMU_PACKED; 82 83 struct rtas_event_log_v6 { 84 uint8_t b0; 85 #define RTAS_LOG_V6_B0_VALID 0x80 86 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 87 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 88 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 89 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 90 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 91 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 92 uint8_t _resv1; 93 uint8_t b2; 94 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 95 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 96 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 97 uint8_t _resv2[9]; 98 uint32_t company; 99 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 100 } QEMU_PACKED; 101 102 struct rtas_event_log_v6_section_header { 103 uint16_t section_id; 104 uint16_t section_length; 105 uint8_t section_version; 106 uint8_t section_subtype; 107 uint16_t creator_component_id; 108 } QEMU_PACKED; 109 110 struct rtas_event_log_v6_maina { 111 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 112 struct rtas_event_log_v6_section_header hdr; 113 uint32_t creation_date; /* BCD: YYYYMMDD */ 114 uint32_t creation_time; /* BCD: HHMMSS00 */ 115 uint8_t _platform1[8]; 116 char creator_id; 117 uint8_t _resv1[2]; 118 uint8_t section_count; 119 uint8_t _resv2[4]; 120 uint8_t _platform2[8]; 121 uint32_t plid; 122 uint8_t _platform3[4]; 123 } QEMU_PACKED; 124 125 struct rtas_event_log_v6_mainb { 126 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 127 struct rtas_event_log_v6_section_header hdr; 128 uint8_t subsystem_id; 129 uint8_t _platform1; 130 uint8_t event_severity; 131 uint8_t event_subtype; 132 uint8_t _platform2[4]; 133 uint8_t _resv1[2]; 134 uint16_t action_flags; 135 uint8_t _resv2[4]; 136 } QEMU_PACKED; 137 138 struct rtas_event_log_v6_epow { 139 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 140 struct rtas_event_log_v6_section_header hdr; 141 uint8_t sensor_value; 142 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 143 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 144 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 145 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 146 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 147 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 148 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 149 uint8_t event_modifier; 150 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 151 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 152 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 153 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 154 uint8_t extended_modifier; 155 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 156 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 157 uint8_t _resv; 158 uint64_t reason_code; 159 } QEMU_PACKED; 160 161 struct epow_log_full { 162 struct rtas_error_log hdr; 163 struct rtas_event_log_v6 v6hdr; 164 struct rtas_event_log_v6_maina maina; 165 struct rtas_event_log_v6_mainb mainb; 166 struct rtas_event_log_v6_epow epow; 167 } QEMU_PACKED; 168 169 #define EVENT_MASK_INTERNAL_ERRORS 0x80000000 170 #define EVENT_MASK_EPOW 0x40000000 171 #define EVENT_MASK_HOTPLUG 0x10000000 172 #define EVENT_MASK_IO 0x08000000 173 174 #define _FDT(exp) \ 175 do { \ 176 int ret = (exp); \ 177 if (ret < 0) { \ 178 fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \ 179 #exp, fdt_strerror(ret)); \ 180 exit(1); \ 181 } \ 182 } while (0) 183 184 void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq) 185 { 186 uint32_t epow_irq_ranges[] = {cpu_to_be32(epow_irq), cpu_to_be32(1)}; 187 uint32_t epow_interrupts[] = {cpu_to_be32(epow_irq), 0}; 188 189 _FDT((fdt_begin_node(fdt, "event-sources"))); 190 191 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); 192 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2))); 193 _FDT((fdt_property(fdt, "interrupt-ranges", 194 epow_irq_ranges, sizeof(epow_irq_ranges)))); 195 196 _FDT((fdt_begin_node(fdt, "epow-events"))); 197 _FDT((fdt_property(fdt, "interrupts", 198 epow_interrupts, sizeof(epow_interrupts)))); 199 _FDT((fdt_end_node(fdt))); 200 201 _FDT((fdt_end_node(fdt))); 202 } 203 204 static struct epow_log_full *pending_epow; 205 static uint32_t next_plid; 206 207 static void spapr_powerdown_req(Notifier *n, void *opaque) 208 { 209 sPAPREnvironment *spapr = container_of(n, sPAPREnvironment, epow_notifier); 210 struct rtas_error_log *hdr; 211 struct rtas_event_log_v6 *v6hdr; 212 struct rtas_event_log_v6_maina *maina; 213 struct rtas_event_log_v6_mainb *mainb; 214 struct rtas_event_log_v6_epow *epow; 215 struct tm tm; 216 int year; 217 218 if (pending_epow) { 219 /* For now, we just throw away earlier events if two come 220 * along before any are consumed. This is sufficient for our 221 * powerdown messages, but we'll need more if we do more 222 * general error/event logging */ 223 g_free(pending_epow); 224 } 225 pending_epow = g_malloc0(sizeof(*pending_epow)); 226 hdr = &pending_epow->hdr; 227 v6hdr = &pending_epow->v6hdr; 228 maina = &pending_epow->maina; 229 mainb = &pending_epow->mainb; 230 epow = &pending_epow->epow; 231 232 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 233 | RTAS_LOG_SEVERITY_EVENT 234 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 235 | RTAS_LOG_OPTIONAL_PART_PRESENT 236 | RTAS_LOG_TYPE_EPOW); 237 hdr->extended_length = cpu_to_be32(sizeof(*pending_epow) 238 - sizeof(pending_epow->hdr)); 239 240 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 241 | RTAS_LOG_V6_B0_BIGENDIAN; 242 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 243 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 244 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 245 246 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 247 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 248 /* FIXME: section version, subtype and creator id? */ 249 qemu_get_timedate(&tm, spapr->rtc_offset); 250 year = tm.tm_year + 1900; 251 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 252 | (to_bcd(year % 100) << 16) 253 | (to_bcd(tm.tm_mon + 1) << 8) 254 | to_bcd(tm.tm_mday)); 255 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 256 | (to_bcd(tm.tm_min) << 16) 257 | (to_bcd(tm.tm_sec) << 8)); 258 maina->creator_id = 'H'; /* Hypervisor */ 259 maina->section_count = 3; /* Main-A, Main-B and EPOW */ 260 maina->plid = next_plid++; 261 262 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 263 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 264 /* FIXME: section version, subtype and creator id? */ 265 mainb->subsystem_id = 0xa0; /* External environment */ 266 mainb->event_severity = 0x00; /* Informational / non-error */ 267 mainb->event_subtype = 0xd0; /* Normal shutdown */ 268 269 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 270 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 271 epow->hdr.section_version = 2; /* includes extended modifier */ 272 /* FIXME: section subtype and creator id? */ 273 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 274 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 275 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 276 277 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->epow_irq)); 278 } 279 280 static void check_exception(PowerPCCPU *cpu, sPAPREnvironment *spapr, 281 uint32_t token, uint32_t nargs, 282 target_ulong args, 283 uint32_t nret, target_ulong rets) 284 { 285 uint32_t mask, buf, len; 286 uint64_t xinfo; 287 288 if ((nargs < 6) || (nargs > 7) || nret != 1) { 289 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 290 return; 291 } 292 293 xinfo = rtas_ld(args, 1); 294 mask = rtas_ld(args, 2); 295 buf = rtas_ld(args, 4); 296 len = rtas_ld(args, 5); 297 if (nargs == 7) { 298 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 299 } 300 301 if ((mask & EVENT_MASK_EPOW) && pending_epow) { 302 if (sizeof(*pending_epow) < len) { 303 len = sizeof(*pending_epow); 304 } 305 306 cpu_physical_memory_write(buf, pending_epow, len); 307 g_free(pending_epow); 308 pending_epow = NULL; 309 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 310 } else { 311 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 312 } 313 } 314 315 void spapr_events_init(sPAPREnvironment *spapr) 316 { 317 spapr->epow_irq = spapr_allocate_msi(0); 318 spapr->epow_notifier.notify = spapr_powerdown_req; 319 qemu_register_powerdown_notifier(&spapr->epow_notifier); 320 spapr_rtas_register("check-exception", check_exception); 321 } 322