diff options
Diffstat (limited to 'hw/ppc/spapr_events.c')
| -rw-r--r-- | hw/ppc/spapr_events.c | 279 |
1 files changed, 226 insertions, 53 deletions
diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index 6d3534541c..f85a9c32a7 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -40,6 +40,7 @@ #include "hw/ppc/spapr_drc.h" #include "qemu/help_option.h" #include "qemu/bcd.h" +#include "hw/ppc/spapr_ovec.h" #include <libfdt.h> struct rtas_error_log { @@ -174,6 +175,16 @@ struct epow_log_full { 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; @@ -190,12 +201,9 @@ struct rtas_event_log_v6_hp { #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 { - uint32_t index; - uint32_t count; - char name[1]; - } drc; + union drc_identifier drc_id; } QEMU_PACKED; struct hp_log_full { @@ -206,28 +214,132 @@ struct hp_log_full { 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 +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; + } + + interrupts[0] = cpu_to_be32(source->irq); + interrupts[1] = 0; -void spapr_events_fdt_skel(void *fdt, uint32_t check_exception_irq) + _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); + } + + irq_ranges[count] = cpu_to_be32(count); + count++; + + _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) { - uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)}; - uint32_t interrupts[] = {cpu_to_be32(check_exception_irq), 0}; + 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; + } - _FDT((fdt_begin_node(fdt, "event-sources"))); + return source; +} - _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)))); +static int rtas_event_log_to_irq(sPAPRMachineState *spapr, int log_type) +{ + const sPAPREventSource *source; - _FDT((fdt_begin_node(fdt, "epow-events"))); - _FDT((fdt_property(fdt, "interrupts", interrupts, sizeof(interrupts)))); - _FDT((fdt_end_node(fdt))); + source = rtas_event_log_to_source(spapr, log_type); + g_assert(source); + g_assert(source->enabled); - _FDT((fdt_end_node(fdt))); + return source->irq; } static void rtas_event_log_queue(int log_type, void *data, bool exception) @@ -248,19 +360,15 @@ static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, 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) { + const sPAPREventSource *source = + rtas_event_log_to_source(spapr, entry->log_type); + 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) { + if (source->mask & event_mask) { break; } } @@ -277,19 +385,15 @@ 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) { + const sPAPREventSource *source = + rtas_event_log_to_source(spapr, entry->log_type); + 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) { + if (source->mask & event_mask) { return true; } } @@ -377,7 +481,9 @@ static void spapr_powerdown_req(Notifier *n, void *opaque) rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); - qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); + qemu_irq_pulse(xics_get_qirq(spapr->xics, + rtas_event_log_to_irq(spapr, + RTAS_LOG_TYPE_EPOW))); } static void spapr_hotplug_set_signalled(uint32_t drc_index) @@ -389,7 +495,7 @@ static void spapr_hotplug_set_signalled(uint32_t drc_index) static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, sPAPRDRConnectorType drc_type, - uint32_t drc) + union drc_identifier *drc_id) { sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); struct hp_log_full *new_hp; @@ -434,7 +540,7 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 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); + spapr_hotplug_set_signalled(drc_id->index); } break; case SPAPR_DR_CONNECTOR_TYPE_LMB: @@ -452,48 +558,89 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, } if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { - hp->drc.count = cpu_to_be32(drc); + hp->drc_id.count = cpu_to_be32(drc_id->count); } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { - hp->drc.index = cpu_to_be32(drc); + 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(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); - qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); + qemu_irq_pulse(xics_get_qirq(spapr->xics, + rtas_event_log_to_irq(spapr, + RTAS_LOG_TYPE_HOTPLUG))); } 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); + union drc_identifier drc_id; + drc_id.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); + RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); } 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); + union drc_identifier drc_id; + drc_id.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); + RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); } void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType 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, count); + RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); } void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType 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, count); + RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); +} + +void spapr_hotplug_req_add_by_count_indexed(sPAPRDRConnectorType 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(sPAPRDRConnectorType 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, @@ -505,6 +652,7 @@ static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, uint64_t xinfo; sPAPREventLogEntry *event; struct rtas_error_log *hdr; + int i; if ((nargs < 6) || (nargs > 7) || nret != 1) { rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); @@ -541,8 +689,14 @@ static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, * 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->xics, spapr->check_exception_irq)); + for (i = 0; i < EVENT_CLASS_MAX; i++) { + if (rtas_event_log_contains(EVENT_CLASS_MASK(i), true)) { + const sPAPREventSource *source = + spapr_event_sources_get_source(spapr->event_sources, i); + + g_assert(source->enabled); + qemu_irq_pulse(xics_get_qirq(spapr->xics, source->irq)); + } } return; @@ -594,8 +748,27 @@ out_no_events: void spapr_events_init(sPAPRMachineState *spapr) { QTAILQ_INIT(&spapr->pending_events); - spapr->check_exception_irq = xics_spapr_alloc(spapr->xics, 0, false, - &error_fatal); + + spapr->event_sources = spapr_event_sources_new(); + + spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW, + xics_spapr_alloc(spapr->xics, 0, false, + &error_fatal)); + + /* 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) { + spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG, + xics_spapr_alloc(spapr->xics, 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", |