| /* |
| * 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.h" |
| #include "qemu-char.h" |
| #include "hw/qdev.h" |
| #include "device_tree.h" |
| |
| #include "hw/spapr.h" |
| #include "hw/spapr_vio.h" |
| |
| #include <libfdt.h> |
| |
| 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<null> */ |
| } 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(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, -3); |
| 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, 0); |
| } else { |
| rtas_st(rets, 0, 1); |
| } |
| } |
| |
| 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); |
| } |
