/* * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator * * RTAS events handling * * Copyright (c) 2012 David Gibson, IBM Corporation. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * */ #include "cpu.h" #include "sysemu/sysemu.h" #include "sysemu/char.h" #include "hw/qdev.h" #include "sysemu/device_tree.h" #include "hw/ppc/spapr.h" #include "hw/ppc/spapr_vio.h" #include struct rtas_error_log { uint32_t summary; #define RTAS_LOG_VERSION_MASK 0xff000000 #define RTAS_LOG_VERSION_6 0x06000000 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 #define RTAS_LOG_INITIATOR_CPU 0x00001000 #define RTAS_LOG_INITIATOR_PCI 0x00002000 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 #define RTAS_LOG_TARGET_MASK 0x00000f00 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 #define RTAS_LOG_TARGET_CPU 0x00000100 #define RTAS_LOG_TARGET_PCI 0x00000200 #define RTAS_LOG_TARGET_MEMORY 0x00000400 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 #define RTAS_LOG_TYPE_MASK 0x000000ff #define RTAS_LOG_TYPE_OTHER 0x00000000 #define RTAS_LOG_TYPE_RETRY 0x00000001 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a #define RTAS_LOG_TYPE_EPOW 0x00000040 uint32_t extended_length; } QEMU_PACKED; struct rtas_event_log_v6 { uint8_t b0; #define RTAS_LOG_V6_B0_VALID 0x80 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 uint8_t _resv1; uint8_t b2; #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e uint8_t _resv2[9]; uint32_t company; #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM */ } QEMU_PACKED; struct rtas_event_log_v6_section_header { uint16_t section_id; uint16_t section_length; uint8_t section_version; uint8_t section_subtype; uint16_t creator_component_id; } QEMU_PACKED; struct rtas_event_log_v6_maina { #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ struct rtas_event_log_v6_section_header hdr; uint32_t creation_date; /* BCD: YYYYMMDD */ uint32_t creation_time; /* BCD: HHMMSS00 */ uint8_t _platform1[8]; char creator_id; uint8_t _resv1[2]; uint8_t section_count; uint8_t _resv2[4]; uint8_t _platform2[8]; uint32_t plid; uint8_t _platform3[4]; } QEMU_PACKED; struct rtas_event_log_v6_mainb { #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ struct rtas_event_log_v6_section_header hdr; uint8_t subsystem_id; uint8_t _platform1; uint8_t event_severity; uint8_t event_subtype; uint8_t _platform2[4]; uint8_t _resv1[2]; uint16_t action_flags; uint8_t _resv2[4]; } QEMU_PACKED; struct rtas_event_log_v6_epow { #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ struct rtas_event_log_v6_section_header hdr; uint8_t sensor_value; #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 uint8_t event_modifier; #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 uint8_t extended_modifier; #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 uint8_t _resv; uint64_t reason_code; } QEMU_PACKED; struct epow_log_full { struct rtas_error_log hdr; struct rtas_event_log_v6 v6hdr; struct rtas_event_log_v6_maina maina; struct rtas_event_log_v6_mainb mainb; struct rtas_event_log_v6_epow epow; } QEMU_PACKED; #define EVENT_MASK_INTERNAL_ERRORS 0x80000000 #define EVENT_MASK_EPOW 0x40000000 #define EVENT_MASK_HOTPLUG 0x10000000 #define EVENT_MASK_IO 0x08000000 #define _FDT(exp) \ do { \ int ret = (exp); \ if (ret < 0) { \ fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \ #exp, fdt_strerror(ret)); \ exit(1); \ } \ } while (0) void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq) { uint32_t epow_irq_ranges[] = {cpu_to_be32(epow_irq), cpu_to_be32(1)}; uint32_t epow_interrupts[] = {cpu_to_be32(epow_irq), 0}; _FDT((fdt_begin_node(fdt, "event-sources"))); _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2))); _FDT((fdt_property(fdt, "interrupt-ranges", epow_irq_ranges, sizeof(epow_irq_ranges)))); _FDT((fdt_begin_node(fdt, "epow-events"))); _FDT((fdt_property(fdt, "interrupts", epow_interrupts, sizeof(epow_interrupts)))); _FDT((fdt_end_node(fdt))); _FDT((fdt_end_node(fdt))); } static struct epow_log_full *pending_epow; static uint32_t next_plid; static void spapr_powerdown_req(Notifier *n, void *opaque) { sPAPREnvironment *spapr = container_of(n, sPAPREnvironment, epow_notifier); struct rtas_error_log *hdr; struct rtas_event_log_v6 *v6hdr; struct rtas_event_log_v6_maina *maina; struct rtas_event_log_v6_mainb *mainb; struct rtas_event_log_v6_epow *epow; struct tm tm; int year; if (pending_epow) { /* For now, we just throw away earlier events if two come * along before any are consumed. This is sufficient for our * powerdown messages, but we'll need more if we do more * general error/event logging */ g_free(pending_epow); } pending_epow = g_malloc0(sizeof(*pending_epow)); hdr = &pending_epow->hdr; v6hdr = &pending_epow->v6hdr; maina = &pending_epow->maina; mainb = &pending_epow->mainb; epow = &pending_epow->epow; hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 | RTAS_LOG_SEVERITY_EVENT | RTAS_LOG_DISPOSITION_NOT_RECOVERED | RTAS_LOG_OPTIONAL_PART_PRESENT | RTAS_LOG_TYPE_EPOW); hdr->extended_length = cpu_to_be32(sizeof(*pending_epow) - sizeof(pending_epow->hdr)); v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG | RTAS_LOG_V6_B0_BIGENDIAN; v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); /* FIXME: section version, subtype and creator id? */ qemu_get_timedate(&tm, spapr->rtc_offset); year = tm.tm_year + 1900; maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) | (to_bcd(year % 100) << 16) | (to_bcd(tm.tm_mon + 1) << 8) | to_bcd(tm.tm_mday)); maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) | (to_bcd(tm.tm_min) << 16) | (to_bcd(tm.tm_sec) << 8)); maina->creator_id = 'H'; /* Hypervisor */ maina->section_count = 3; /* Main-A, Main-B and EPOW */ maina->plid = next_plid++; mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); /* FIXME: section version, subtype and creator id? */ mainb->subsystem_id = 0xa0; /* External environment */ mainb->event_severity = 0x00; /* Informational / non-error */ mainb->event_subtype = 0xd0; /* Normal shutdown */ epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); epow->hdr.section_version = 2; /* includes extended modifier */ /* FIXME: section subtype and creator id? */ epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->epow_irq)); } static void check_exception(PowerPCCPU *cpu, sPAPREnvironment *spapr, uint32_t token, uint32_t nargs, target_ulong args, uint32_t nret, target_ulong rets) { uint32_t mask, buf, len; uint64_t xinfo; if ((nargs < 6) || (nargs > 7) || nret != 1) { rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); return; } xinfo = rtas_ld(args, 1); mask = rtas_ld(args, 2); buf = rtas_ld(args, 4); len = rtas_ld(args, 5); if (nargs == 7) { xinfo |= (uint64_t)rtas_ld(args, 6) << 32; } if ((mask & EVENT_MASK_EPOW) && pending_epow) { if (sizeof(*pending_epow) < len) { len = sizeof(*pending_epow); } cpu_physical_memory_write(buf, pending_epow, len); g_free(pending_epow); pending_epow = NULL; rtas_st(rets, 0, RTAS_OUT_SUCCESS); } else { rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); } } void spapr_events_init(sPAPREnvironment *spapr) { spapr->epow_irq = spapr_allocate_msi(0); spapr->epow_notifier.notify = spapr_powerdown_req; qemu_register_powerdown_notifier(&spapr->epow_notifier); spapr_rtas_register("check-exception", check_exception); }