diff options
Diffstat (limited to 'qemu/hw/ppc/spapr_events.c')
| -rw-r--r-- | qemu/hw/ppc/spapr_events.c | 610 |
1 files changed, 0 insertions, 610 deletions
diff --git a/qemu/hw/ppc/spapr_events.c b/qemu/hw/ppc/spapr_events.c deleted file mode 100644 index 049fb1b32..000000000 --- a/qemu/hw/ppc/spapr_events.c +++ /dev/null @@ -1,610 +0,0 @@ -/* - * 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 "sysemu/char.h" -#include "hw/qdev.h" -#include "sysemu/device_tree.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 <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 -#define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 - 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; - -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 - uint8_t reserved; - union { - uint32_t index; - uint32_t count; - char name[1]; - } drc; -} QEMU_PACKED; - -struct hp_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_hp hp; -} 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 check_exception_irq) -{ - uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)}; - uint32_t interrupts[] = {cpu_to_be32(check_exception_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", - irq_ranges, sizeof(irq_ranges)))); - - _FDT((fdt_begin_node(fdt, "epow-events"))); - _FDT((fdt_property(fdt, "interrupts", interrupts, sizeof(interrupts)))); - _FDT((fdt_end_node(fdt))); - - _FDT((fdt_end_node(fdt))); -} - -static void rtas_event_log_queue(int log_type, void *data, bool exception) -{ - sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); - sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); - - g_assert(data); - entry->log_type = log_type; - entry->exception = exception; - entry->data = data; - QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); -} - -static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, - bool exception) -{ - sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); - sPAPREventLogEntry *entry = NULL; - - /* we only queue EPOW events atm. */ - if ((event_mask & EVENT_MASK_EPOW) == 0) { - return NULL; - } - - QTAILQ_FOREACH(entry, &spapr->pending_events, next) { - if (entry->exception != exception) { - continue; - } - - /* EPOW and hotplug events are surfaced in the same manner */ - if (entry->log_type == RTAS_LOG_TYPE_EPOW || - entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { - break; - } - } - - if (entry) { - QTAILQ_REMOVE(&spapr->pending_events, entry, next); - } - - return entry; -} - -static bool rtas_event_log_contains(uint32_t event_mask, bool exception) -{ - sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); - sPAPREventLogEntry *entry = NULL; - - /* we only queue EPOW events atm. */ - if ((event_mask & EVENT_MASK_EPOW) == 0) { - return false; - } - - QTAILQ_FOREACH(entry, &spapr->pending_events, next) { - if (entry->exception != exception) { - continue; - } - - /* EPOW and hotplug events are surfaced in the same manner */ - if (entry->log_type == RTAS_LOG_TYPE_EPOW || - entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { - 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()); - 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 epow_log_full *new_epow; - - new_epow = g_malloc0(sizeof(*new_epow)); - hdr = &new_epow->hdr; - v6hdr = &new_epow->v6hdr; - maina = &new_epow->maina; - mainb = &new_epow->mainb; - epow = &new_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(*new_epow) - - sizeof(new_epow->hdr)); - - 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(RTAS_LOG_TYPE_EPOW, new_epow, true); - - qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); -} - -static void spapr_hotplug_set_signalled(uint32_t drc_index) -{ - sPAPRDRConnector *drc = spapr_dr_connector_by_index(drc_index); - sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); - drck->set_signalled(drc); -} - -static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, - sPAPRDRConnectorType drc_type, - uint32_t drc) -{ - sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); - struct hp_log_full *new_hp; - 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_hp *hp; - - new_hp = g_malloc0(sizeof(struct hp_log_full)); - hdr = &new_hp->hdr; - v6hdr = &new_hp->v6hdr; - maina = &new_hp->maina; - mainb = &new_hp->mainb; - hp = &new_hp->hp; - - 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_INITIATOR_HOTPLUG - | RTAS_LOG_TYPE_HOTPLUG); - hdr->extended_length = cpu_to_be32(sizeof(*new_hp) - - sizeof(new_hp->hdr)); - - 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; - if (hp->hotplug_action == RTAS_LOG_V6_HP_ACTION_ADD) { - spapr_hotplug_set_signalled(drc); - } - break; - case SPAPR_DR_CONNECTOR_TYPE_LMB: - hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; - 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.count = cpu_to_be32(drc); - } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { - hp->drc.index = cpu_to_be32(drc); - } - - rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); - - qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); -} - -void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) -{ - sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); - sPAPRDRConnectorType drc_type = drck->get_type(drc); - uint32_t index = drck->get_index(drc); - - spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, - RTAS_LOG_V6_HP_ACTION_ADD, drc_type, index); -} - -void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) -{ - sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); - sPAPRDRConnectorType drc_type = drck->get_type(drc); - uint32_t index = drck->get_index(drc); - - spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, - RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, index); -} - -void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type, - uint32_t count) -{ - spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, - RTAS_LOG_V6_HP_ACTION_ADD, drc_type, count); -} - -void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, - uint32_t count) -{ - spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, - RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, count); -} - -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 *hdr; - - 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(mask, true); - if (!event) { - goto out_no_events; - } - - hdr = event->data; - event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); - - if (event_len < len) { - len = event_len; - } - - cpu_physical_memory_write(buf, event->data, len); - rtas_st(rets, 0, RTAS_OUT_SUCCESS); - g_free(event->data); - 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. - */ - if (rtas_event_log_contains(mask, true)) { - qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_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) -{ - uint32_t mask, buf, len, event_len; - sPAPREventLogEntry *event; - struct rtas_error_log *hdr; - - if (nargs != 4 || nret != 1) { - rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); - return; - } - - mask = rtas_ld(args, 0); - buf = rtas_ld(args, 2); - len = rtas_ld(args, 3); - - event = rtas_event_log_dequeue(mask, false); - if (!event) { - goto out_no_events; - } - - hdr = event->data; - event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); - - if (event_len < len) { - len = event_len; - } - - cpu_physical_memory_write(buf, event->data, len); - rtas_st(rets, 0, RTAS_OUT_SUCCESS); - g_free(event->data); - g_free(event); - return; - -out_no_events: - rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); -} - -void spapr_events_init(sPAPRMachineState *spapr) -{ - QTAILQ_INIT(&spapr->pending_events); - spapr->check_exception_irq = xics_alloc(spapr->icp, 0, 0, false, - &error_fatal); - 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); -} |