--- /dev/null
+/*
+ * 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 "hw/pci/pci.h"
+#include "hw/pci-host/spapr.h"
+#include "hw/ppc/spapr_drc.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_req_event(sPAPRDRConnector *drc, uint8_t hp_action)
+{
+ 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;
+ sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
+ sPAPRDRConnectorType drc_type = drck->get_type(drc);
+
+ 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;
+
+
+ switch (drc_type) {
+ case SPAPR_DR_CONNECTOR_TYPE_PCI:
+ hp->drc.index = cpu_to_be32(drck->get_index(drc));
+ hp->hotplug_identifier = RTAS_LOG_V6_HP_ID_DRC_INDEX;
+ hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI;
+ break;
+ default:
+ /* we shouldn't be signaling hotplug events for resources
+ * that don't support them
+ */
+ g_assert(false);
+ return;
+ }
+
+ 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_event(sPAPRDRConnector *drc)
+{
+ spapr_hotplug_req_event(drc, RTAS_LOG_V6_HP_ACTION_ADD);
+}
+
+void spapr_hotplug_req_remove_event(sPAPRDRConnector *drc)
+{
+ spapr_hotplug_req_event(drc, RTAS_LOG_V6_HP_ACTION_REMOVE);
+}
+
+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);
+ 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);
+}
Code Review / kvmfornfv.git / blobdiff