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a08a64627b
Record the GHEB address via fw_cfg file, when recording a error to CPER, it will use this address to find out Generic Error Data Entries and write the error. In order to avoid migration failure, make hardware error table address to a part of GED device instead of global variable, then this address will be migrated to target QEMU. Acked-by: Xiang Zheng <zhengxiang9@huawei.com> Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 20200512030609.19593-7-gengdongjiu@huawei.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
/*
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*
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* Copyright (c) 2018 Intel Corporation
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* Copyright (c) 2019 Huawei Technologies R & D (UK) Ltd
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* Written by Samuel Ortiz, Shameer Kolothum
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* The ACPI Generic Event Device (GED) is a hardware-reduced specific
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* device[ACPI v6.1 Section 5.6.9] that handles all platform events,
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* including the hotplug ones. Generic Event Device allows platforms
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* to handle interrupts in ACPI ASL statements. It follows a very
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* similar approach like the _EVT method from GPIO events. All
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* interrupts are listed in _CRS and the handler is written in _EVT
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* method. Here, we use a single interrupt for the GED device, relying
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* on IO memory region to communicate the type of device affected by
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* the interrupt. This way, we can support up to 32 events with a
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* unique interrupt.
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*
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* Here is an example.
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*
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* Device (\_SB.GED)
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* {
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* Name (_HID, "ACPI0013")
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* Name (_UID, Zero)
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* Name (_CRS, ResourceTemplate ()
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* {
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* Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, ,, )
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* {
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* 0x00000029,
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* }
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* })
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* OperationRegion (EREG, SystemMemory, 0x09080000, 0x04)
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* Field (EREG, DWordAcc, NoLock, WriteAsZeros)
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* {
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* ESEL, 32
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* }
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*
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* Method (_EVT, 1, Serialized) // _EVT: Event
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* {
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* Local0 = ESEL // ESEL = IO memory region which specifies the
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* // device type.
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* If (((Local0 & One) == One))
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* {
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* MethodEvent1()
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* }
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* If ((Local0 & 0x2) == 0x2)
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* {
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* MethodEvent2()
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* }
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* ...
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* }
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* }
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*
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*/
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#ifndef HW_ACPI_GED_H
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#define HW_ACPI_GED_H
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#include "hw/sysbus.h"
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#include "hw/acpi/memory_hotplug.h"
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#include "hw/acpi/ghes.h"
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#define ACPI_POWER_BUTTON_DEVICE "PWRB"
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#define TYPE_ACPI_GED "acpi-ged"
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#define ACPI_GED(obj) \
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OBJECT_CHECK(AcpiGedState, (obj), TYPE_ACPI_GED)
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#define ACPI_GED_EVT_SEL_OFFSET 0x0
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#define ACPI_GED_EVT_SEL_LEN 0x4
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#define GED_DEVICE "GED"
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#define AML_GED_EVT_REG "EREG"
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#define AML_GED_EVT_SEL "ESEL"
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/*
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* Platforms need to specify the GED event bitmap
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* to describe what kind of events they want to support
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* through GED.
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*/
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#define ACPI_GED_MEM_HOTPLUG_EVT 0x1
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#define ACPI_GED_PWR_DOWN_EVT 0x2
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#define ACPI_GED_NVDIMM_HOTPLUG_EVT 0x4
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typedef struct GEDState {
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MemoryRegion io;
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uint32_t sel;
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} GEDState;
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typedef struct AcpiGedState {
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SysBusDevice parent_obj;
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MemHotplugState memhp_state;
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MemoryRegion container_memhp;
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GEDState ged_state;
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uint32_t ged_event_bitmap;
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qemu_irq irq;
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AcpiGhesState ghes_state;
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} AcpiGedState;
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void build_ged_aml(Aml *table, const char* name, HotplugHandler *hotplug_dev,
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uint32_t ged_irq, AmlRegionSpace rs, hwaddr ged_base);
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#endif
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