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-rw-r--r--hw/ppc/spapr.c2
-rw-r--r--hw/ppc/spapr_events.c65
-rw-r--r--include/hw/ppc/spapr.h3
3 files changed, 63 insertions, 7 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 15eebb4b2d..b0b9f8116d 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -533,6 +533,8 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base,
refpoints, sizeof(refpoints))));
_FDT((fdt_property_cell(fdt, "rtas-error-log-max", RTAS_ERROR_LOG_MAX)));
+ _FDT((fdt_property_cell(fdt, "rtas-event-scan-rate",
+ RTAS_EVENT_SCAN_RATE)));
/*
* According to PAPR, rtas ibm,os-term does not guarantee a return
diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c
index c634a3b435..fda9e3590a 100644
--- a/hw/ppc/spapr_events.c
+++ b/hw/ppc/spapr_events.c
@@ -236,17 +236,19 @@ void spapr_events_fdt_skel(void *fdt, uint32_t check_exception_irq)
_FDT((fdt_end_node(fdt)));
}
-static void rtas_event_log_queue(int log_type, void *data)
+static void rtas_event_log_queue(int log_type, void *data, bool exception)
{
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)
+static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask,
+ bool exception)
{
sPAPREventLogEntry *entry = NULL;
@@ -256,6 +258,10 @@ static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask)
}
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) {
@@ -270,7 +276,7 @@ static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask)
return entry;
}
-static bool rtas_event_log_contains(uint32_t event_mask)
+static bool rtas_event_log_contains(uint32_t event_mask, bool exception)
{
sPAPREventLogEntry *entry = NULL;
@@ -280,6 +286,10 @@ static bool rtas_event_log_contains(uint32_t event_mask)
}
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) {
@@ -367,7 +377,7 @@ static void spapr_powerdown_req(Notifier *n, void *opaque)
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);
+ rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true);
qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq));
}
@@ -428,7 +438,7 @@ static void spapr_hotplug_req_event(sPAPRDRConnector *drc, uint8_t hp_action)
return;
}
- rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp);
+ rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true);
qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq));
}
@@ -466,7 +476,7 @@ static void check_exception(PowerPCCPU *cpu, sPAPREnvironment *spapr,
xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
}
- event = rtas_event_log_dequeue(mask);
+ event = rtas_event_log_dequeue(mask, true);
if (!event) {
goto out_no_events;
}
@@ -488,7 +498,7 @@ static void check_exception(PowerPCCPU *cpu, sPAPREnvironment *spapr,
* do the latter here, since our code relies on edge-triggered
* interrupts.
*/
- if (rtas_event_log_contains(mask)) {
+ if (rtas_event_log_contains(mask, true)) {
qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq));
}
@@ -498,6 +508,46 @@ out_no_events:
rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
}
+static void event_scan(PowerPCCPU *cpu, sPAPREnvironment *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(sPAPREnvironment *spapr)
{
QTAILQ_INIT(&spapr->pending_events);
@@ -506,4 +556,5 @@ void spapr_events_init(sPAPREnvironment *spapr)
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);
}
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 71b3e0876b..7b4b1bb3d7 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -514,6 +514,8 @@ int spapr_rtas_device_tree_setup(void *fdt, hwaddr rtas_addr,
#define RTAS_ERROR_LOG_MAX 2048
+#define RTAS_EVENT_SCAN_RATE 1
+
typedef struct sPAPRTCETable sPAPRTCETable;
#define TYPE_SPAPR_TCE_TABLE "spapr-tce-table"
@@ -539,6 +541,7 @@ sPAPRTCETable *spapr_tce_find_by_liobn(target_ulong liobn);
struct sPAPREventLogEntry {
int log_type;
+ bool exception;
void *data;
QTAILQ_ENTRY(sPAPREventLogEntry) next;
};
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-02 20:53:05 +0000