| /* |
| * 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 "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "cpu.h" |
| #include "sysemu/sysemu.h" |
| #include "hw/qdev.h" |
| #include "sysemu/device_tree.h" |
| |
| #include "hw/ppc/fdt.h" |
| #include "hw/ppc/spapr.h" |
| #include "hw/ppc/spapr_vio.h" |
| #include "hw/pci/pci.h" |
| #include "hw/pci-host/spapr.h" |
| #include "hw/ppc/spapr_drc.h" |
| #include "qemu/help_option.h" |
| #include "qemu/bcd.h" |
| #include "hw/ppc/spapr_ovec.h" |
| #include <libfdt.h> |
| |
| #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 |
| #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 |
| |
| struct rtas_error_log { |
| uint32_t summary; |
| 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_extended_log { |
| 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; |
| |
| union drc_identifier { |
| uint32_t index; |
| uint32_t count; |
| struct { |
| uint32_t count; |
| uint32_t index; |
| } count_indexed; |
| char name[1]; |
| } QEMU_PACKED; |
| |
| struct rtas_event_log_v6_hp { |
| #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ |
| struct rtas_event_log_v6_section_header hdr; |
| uint8_t hotplug_type; |
| #define RTAS_LOG_V6_HP_TYPE_CPU 1 |
| #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 |
| #define RTAS_LOG_V6_HP_TYPE_SLOT 3 |
| #define RTAS_LOG_V6_HP_TYPE_PHB 4 |
| #define RTAS_LOG_V6_HP_TYPE_PCI 5 |
| uint8_t hotplug_action; |
| #define RTAS_LOG_V6_HP_ACTION_ADD 1 |
| #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 |
| uint8_t hotplug_identifier; |
| #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 |
| #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 |
| #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 |
| #define RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED 4 |
| uint8_t reserved; |
| union drc_identifier drc_id; |
| } QEMU_PACKED; |
| |
| struct hp_extended_log { |
| 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_hp hp; |
| } QEMU_PACKED; |
| |
| typedef enum EventClass { |
| EVENT_CLASS_INTERNAL_ERRORS = 0, |
| EVENT_CLASS_EPOW = 1, |
| EVENT_CLASS_RESERVED = 2, |
| EVENT_CLASS_HOT_PLUG = 3, |
| EVENT_CLASS_IO = 4, |
| EVENT_CLASS_MAX |
| } EventClassIndex; |
| #define EVENT_CLASS_MASK(index) (1 << (31 - index)) |
| |
| static const char * const event_names[EVENT_CLASS_MAX] = { |
| [EVENT_CLASS_INTERNAL_ERRORS] = "internal-errors", |
| [EVENT_CLASS_EPOW] = "epow-events", |
| [EVENT_CLASS_HOT_PLUG] = "hot-plug-events", |
| [EVENT_CLASS_IO] = "ibm,io-events", |
| }; |
| |
| struct SpaprEventSource { |
| int irq; |
| uint32_t mask; |
| bool enabled; |
| }; |
| |
| static SpaprEventSource *spapr_event_sources_new(void) |
| { |
| return g_new0(SpaprEventSource, EVENT_CLASS_MAX); |
| } |
| |
| static void spapr_event_sources_register(SpaprEventSource *event_sources, |
| EventClassIndex index, int irq) |
| { |
| /* we only support 1 irq per event class at the moment */ |
| g_assert(event_sources); |
| g_assert(!event_sources[index].enabled); |
| event_sources[index].irq = irq; |
| event_sources[index].mask = EVENT_CLASS_MASK(index); |
| event_sources[index].enabled = true; |
| } |
| |
| static const SpaprEventSource * |
| spapr_event_sources_get_source(SpaprEventSource *event_sources, |
| EventClassIndex index) |
| { |
| g_assert(index < EVENT_CLASS_MAX); |
| g_assert(event_sources); |
| |
| return &event_sources[index]; |
| } |
| |
| void spapr_dt_events(SpaprMachineState *spapr, void *fdt) |
| { |
| uint32_t irq_ranges[EVENT_CLASS_MAX * 2]; |
| int i, count = 0, event_sources; |
| SpaprEventSource *events = spapr->event_sources; |
| |
| g_assert(events); |
| |
| _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources")); |
| |
| for (i = 0, count = 0; i < EVENT_CLASS_MAX; i++) { |
| int node_offset; |
| uint32_t interrupts[2]; |
| const SpaprEventSource *source = |
| spapr_event_sources_get_source(events, i); |
| const char *source_name = event_names[i]; |
| |
| if (!source->enabled) { |
| continue; |
| } |
| |
| spapr_dt_irq(interrupts, source->irq, false); |
| |
| _FDT(node_offset = fdt_add_subnode(fdt, event_sources, source_name)); |
| _FDT(fdt_setprop(fdt, node_offset, "interrupts", interrupts, |
| sizeof(interrupts))); |
| |
| irq_ranges[count++] = interrupts[0]; |
| irq_ranges[count++] = cpu_to_be32(1); |
| } |
| |
| _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0))); |
| _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2))); |
| _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges", |
| irq_ranges, count * sizeof(uint32_t)))); |
| } |
| |
| static const SpaprEventSource * |
| rtas_event_log_to_source(SpaprMachineState *spapr, int log_type) |
| { |
| const SpaprEventSource *source; |
| |
| g_assert(spapr->event_sources); |
| |
| switch (log_type) { |
| case RTAS_LOG_TYPE_HOTPLUG: |
| source = spapr_event_sources_get_source(spapr->event_sources, |
| EVENT_CLASS_HOT_PLUG); |
| if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) { |
| g_assert(source->enabled); |
| break; |
| } |
| /* fall back to epow for legacy hotplug interrupt source */ |
| case RTAS_LOG_TYPE_EPOW: |
| source = spapr_event_sources_get_source(spapr->event_sources, |
| EVENT_CLASS_EPOW); |
| break; |
| default: |
| source = NULL; |
| } |
| |
| return source; |
| } |
| |
| static int rtas_event_log_to_irq(SpaprMachineState *spapr, int log_type) |
| { |
| const SpaprEventSource *source; |
| |
| source = rtas_event_log_to_source(spapr, log_type); |
| g_assert(source); |
| g_assert(source->enabled); |
| |
| return source->irq; |
| } |
| |
| static uint32_t spapr_event_log_entry_type(SpaprEventLogEntry *entry) |
| { |
| return entry->summary & RTAS_LOG_TYPE_MASK; |
| } |
| |
| static void rtas_event_log_queue(SpaprMachineState *spapr, |
| SpaprEventLogEntry *entry) |
| { |
| QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); |
| } |
| |
| static SpaprEventLogEntry *rtas_event_log_dequeue(SpaprMachineState *spapr, |
| uint32_t event_mask) |
| { |
| SpaprEventLogEntry *entry = NULL; |
| |
| QTAILQ_FOREACH(entry, &spapr->pending_events, next) { |
| const SpaprEventSource *source = |
| rtas_event_log_to_source(spapr, |
| spapr_event_log_entry_type(entry)); |
| |
| if (source->mask & event_mask) { |
| break; |
| } |
| } |
| |
| if (entry) { |
| QTAILQ_REMOVE(&spapr->pending_events, entry, next); |
| } |
| |
| return entry; |
| } |
| |
| static bool rtas_event_log_contains(uint32_t event_mask) |
| { |
| SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); |
| SpaprEventLogEntry *entry = NULL; |
| |
| QTAILQ_FOREACH(entry, &spapr->pending_events, next) { |
| const SpaprEventSource *source = |
| rtas_event_log_to_source(spapr, |
| spapr_event_log_entry_type(entry)); |
| |
| if (source->mask & event_mask) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| static uint32_t next_plid; |
| |
| static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) |
| { |
| 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); |
| } |
| |
| static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, |
| int section_count) |
| { |
| SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); |
| struct tm tm; |
| int year; |
| |
| 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? */ |
| spapr_rtc_read(&spapr->rtc, &tm, NULL); |
| 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 = section_count; |
| maina->plid = next_plid++; |
| } |
| |
| static void spapr_powerdown_req(Notifier *n, void *opaque) |
| { |
| SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); |
| SpaprEventLogEntry *entry; |
| 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 epow_extended_log *new_epow; |
| |
| entry = g_new(SpaprEventLogEntry, 1); |
| new_epow = g_malloc0(sizeof(*new_epow)); |
| entry->extended_log = new_epow; |
| |
| v6hdr = &new_epow->v6hdr; |
| maina = &new_epow->maina; |
| mainb = &new_epow->mainb; |
| epow = &new_epow->epow; |
| |
| entry->summary = RTAS_LOG_VERSION_6 |
| | RTAS_LOG_SEVERITY_EVENT |
| | RTAS_LOG_DISPOSITION_NOT_RECOVERED |
| | RTAS_LOG_OPTIONAL_PART_PRESENT |
| | RTAS_LOG_TYPE_EPOW; |
| entry->extended_length = sizeof(*new_epow); |
| |
| spapr_init_v6hdr(v6hdr); |
| spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); |
| |
| 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; |
| |
| rtas_event_log_queue(spapr, entry); |
| |
| qemu_irq_pulse(spapr_qirq(spapr, |
| rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_EPOW))); |
| } |
| |
| static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, |
| SpaprDrcType drc_type, |
| union drc_identifier *drc_id) |
| { |
| SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); |
| SpaprEventLogEntry *entry; |
| struct hp_extended_log *new_hp; |
| 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_hp *hp; |
| |
| entry = g_new(SpaprEventLogEntry, 1); |
| new_hp = g_malloc0(sizeof(struct hp_extended_log)); |
| entry->extended_log = new_hp; |
| |
| v6hdr = &new_hp->v6hdr; |
| maina = &new_hp->maina; |
| mainb = &new_hp->mainb; |
| hp = &new_hp->hp; |
| |
| entry->summary = RTAS_LOG_VERSION_6 |
| | RTAS_LOG_SEVERITY_EVENT |
| | RTAS_LOG_DISPOSITION_NOT_RECOVERED |
| | RTAS_LOG_OPTIONAL_PART_PRESENT |
| | RTAS_LOG_INITIATOR_HOTPLUG |
| | RTAS_LOG_TYPE_HOTPLUG; |
| entry->extended_length = sizeof(*new_hp); |
| |
| spapr_init_v6hdr(v6hdr); |
| spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); |
| |
| mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); |
| mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); |
| mainb->subsystem_id = 0x80; /* External environment */ |
| mainb->event_severity = 0x00; /* Informational / non-error */ |
| mainb->event_subtype = 0x00; /* Normal shutdown */ |
| |
| hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); |
| hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); |
| hp->hdr.section_version = 1; /* includes extended modifier */ |
| hp->hotplug_action = hp_action; |
| hp->hotplug_identifier = hp_id; |
| |
| switch (drc_type) { |
| case SPAPR_DR_CONNECTOR_TYPE_PCI: |
| hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; |
| break; |
| case SPAPR_DR_CONNECTOR_TYPE_LMB: |
| hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; |
| break; |
| case SPAPR_DR_CONNECTOR_TYPE_CPU: |
| hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; |
| break; |
| case SPAPR_DR_CONNECTOR_TYPE_PHB: |
| hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PHB; |
| break; |
| default: |
| /* we shouldn't be signaling hotplug events for resources |
| * that don't support them |
| */ |
| g_assert(false); |
| return; |
| } |
| |
| if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { |
| hp->drc_id.count = cpu_to_be32(drc_id->count); |
| } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { |
| hp->drc_id.index = cpu_to_be32(drc_id->index); |
| } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) { |
| /* we should not be using count_indexed value unless the guest |
| * supports dedicated hotplug event source |
| */ |
| g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)); |
| hp->drc_id.count_indexed.count = |
| cpu_to_be32(drc_id->count_indexed.count); |
| hp->drc_id.count_indexed.index = |
| cpu_to_be32(drc_id->count_indexed.index); |
| } |
| |
| rtas_event_log_queue(spapr, entry); |
| |
| qemu_irq_pulse(spapr_qirq(spapr, |
| rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_HOTPLUG))); |
| } |
| |
| void spapr_hotplug_req_add_by_index(SpaprDrc *drc) |
| { |
| SpaprDrcType drc_type = spapr_drc_type(drc); |
| union drc_identifier drc_id; |
| |
| drc_id.index = spapr_drc_index(drc); |
| spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, |
| RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); |
| } |
| |
| void spapr_hotplug_req_remove_by_index(SpaprDrc *drc) |
| { |
| SpaprDrcType drc_type = spapr_drc_type(drc); |
| union drc_identifier drc_id; |
| |
| drc_id.index = spapr_drc_index(drc); |
| spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, |
| RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); |
| } |
| |
| void spapr_hotplug_req_add_by_count(SpaprDrcType drc_type, |
| uint32_t count) |
| { |
| union drc_identifier drc_id; |
| |
| drc_id.count = count; |
| spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, |
| RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); |
| } |
| |
| void spapr_hotplug_req_remove_by_count(SpaprDrcType drc_type, |
| uint32_t count) |
| { |
| union drc_identifier drc_id; |
| |
| drc_id.count = count; |
| spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, |
| RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); |
| } |
| |
| void spapr_hotplug_req_add_by_count_indexed(SpaprDrcType drc_type, |
| uint32_t count, uint32_t index) |
| { |
| union drc_identifier drc_id; |
| |
| drc_id.count_indexed.count = count; |
| drc_id.count_indexed.index = index; |
| spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, |
| RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); |
| } |
| |
| void spapr_hotplug_req_remove_by_count_indexed(SpaprDrcType drc_type, |
| uint32_t count, uint32_t index) |
| { |
| union drc_identifier drc_id; |
| |
| drc_id.count_indexed.count = count; |
| drc_id.count_indexed.index = index; |
| spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, |
| RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); |
| } |
| |
| static void check_exception(PowerPCCPU *cpu, SpaprMachineState *spapr, |
| uint32_t token, uint32_t nargs, |
| target_ulong args, |
| uint32_t nret, target_ulong rets) |
| { |
| uint32_t mask, buf, len, event_len; |
| uint64_t xinfo; |
| SpaprEventLogEntry *event; |
| struct rtas_error_log header; |
| int i; |
| |
| 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; |
| } |
| |
| event = rtas_event_log_dequeue(spapr, mask); |
| if (!event) { |
| goto out_no_events; |
| } |
| |
| event_len = event->extended_length + sizeof(header); |
| |
| if (event_len < len) { |
| len = event_len; |
| } |
| |
| header.summary = cpu_to_be32(event->summary); |
| header.extended_length = cpu_to_be32(event->extended_length); |
| cpu_physical_memory_write(buf, &header, sizeof(header)); |
| cpu_physical_memory_write(buf + sizeof(header), event->extended_log, |
| event->extended_length); |
| rtas_st(rets, 0, RTAS_OUT_SUCCESS); |
| g_free(event->extended_log); |
| g_free(event); |
| |
| /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if |
| * there are still pending events to be fetched via check-exception. We |
| * do the latter here, since our code relies on edge-triggered |
| * interrupts. |
| */ |
| for (i = 0; i < EVENT_CLASS_MAX; i++) { |
| if (rtas_event_log_contains(EVENT_CLASS_MASK(i))) { |
| const SpaprEventSource *source = |
| spapr_event_sources_get_source(spapr->event_sources, i); |
| |
| g_assert(source->enabled); |
| qemu_irq_pulse(spapr_qirq(spapr, source->irq)); |
| } |
| } |
| |
| return; |
| |
| out_no_events: |
| rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); |
| } |
| |
| static void event_scan(PowerPCCPU *cpu, SpaprMachineState *spapr, |
| uint32_t token, uint32_t nargs, |
| target_ulong args, |
| uint32_t nret, target_ulong rets) |
| { |
| if (nargs != 4 || nret != 1) { |
| rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); |
| return; |
| } |
| rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); |
| } |
| |
| void spapr_clear_pending_events(SpaprMachineState *spapr) |
| { |
| SpaprEventLogEntry *entry = NULL, *next_entry; |
| |
| QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { |
| QTAILQ_REMOVE(&spapr->pending_events, entry, next); |
| g_free(entry->extended_log); |
| g_free(entry); |
| } |
| } |
| |
| void spapr_events_init(SpaprMachineState *spapr) |
| { |
| int epow_irq = SPAPR_IRQ_EPOW; |
| |
| if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { |
| epow_irq = spapr_irq_findone(spapr, &error_fatal); |
| } |
| |
| spapr_irq_claim(spapr, epow_irq, false, &error_fatal); |
| |
| QTAILQ_INIT(&spapr->pending_events); |
| |
| spapr->event_sources = spapr_event_sources_new(); |
| |
| spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW, |
| epow_irq); |
| |
| /* NOTE: if machine supports modern/dedicated hotplug event source, |
| * we add it to the device-tree unconditionally. This means we may |
| * have cases where the source is enabled in QEMU, but unused by the |
| * guest because it does not support modern hotplug events, so we |
| * take care to rely on checking for negotiation of OV5_HP_EVT option |
| * before attempting to use it to signal events, rather than simply |
| * checking that it's enabled. |
| */ |
| if (spapr->use_hotplug_event_source) { |
| int hp_irq = SPAPR_IRQ_HOTPLUG; |
| |
| if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { |
| hp_irq = spapr_irq_findone(spapr, &error_fatal); |
| } |
| |
| spapr_irq_claim(spapr, hp_irq, false, &error_fatal); |
| |
| spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG, |
| hp_irq); |
| } |
| |
| spapr->epow_notifier.notify = spapr_powerdown_req; |
| qemu_register_powerdown_notifier(&spapr->epow_notifier); |
| spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", |
| check_exception); |
| spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); |
| } |
