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/*
* Common IOMMU interface for X86 platform
*
* Copyright (C) 2016 Peter Xu, Red Hat <peterx@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef IOMMU_COMMON_H
#define IOMMU_COMMON_H
#include "hw/sysbus.h"
#include "hw/pci/pci.h"
#define TYPE_X86_IOMMU_DEVICE ("x86-iommu")
#define X86_IOMMU_DEVICE(obj) \
OBJECT_CHECK(X86IOMMUState, (obj), TYPE_X86_IOMMU_DEVICE)
#define X86_IOMMU_CLASS(klass) \
OBJECT_CLASS_CHECK(X86IOMMUClass, (klass), TYPE_X86_IOMMU_DEVICE)
#define X86_IOMMU_GET_CLASS(obj) \
OBJECT_GET_CLASS(X86IOMMUClass, obj, TYPE_X86_IOMMU_DEVICE)
#define X86_IOMMU_PCI_DEVFN_MAX 256
#define X86_IOMMU_SID_INVALID (0xffff)
typedef struct X86IOMMUState X86IOMMUState;
typedef struct X86IOMMUClass X86IOMMUClass;
typedef enum IommuType {
TYPE_INTEL,
TYPE_AMD,
TYPE_NONE
} IommuType;
struct X86IOMMUClass {
SysBusDeviceClass parent;
/* Intel/AMD specific realize() hook */
DeviceRealize realize;
/* MSI-based interrupt remapping */
int (*int_remap)(X86IOMMUState *iommu, MSIMessage *src,
MSIMessage *dst, uint16_t sid);
};
/**
* iec_notify_fn - IEC (Interrupt Entry Cache) notifier hook,
* triggered when IR invalidation happens.
* @private: private data
* @global: whether this is a global IEC invalidation
* @index: IRTE index to invalidate (start from)
* @mask: invalidation mask
*/
typedef void (*iec_notify_fn)(void *private, bool global,
uint32_t index, uint32_t mask);
struct IEC_Notifier {
iec_notify_fn iec_notify;
void *private;
QLIST_ENTRY(IEC_Notifier) list;
};
typedef struct IEC_Notifier IEC_Notifier;
struct X86IOMMUState {
SysBusDevice busdev;
bool intr_supported; /* Whether vIOMMU supports IR */
bool dt_supported; /* Whether vIOMMU supports DT */
IommuType type; /* IOMMU type - AMD/Intel */
QLIST_HEAD(, IEC_Notifier) iec_notifiers; /* IEC notify list */
};
/**
* x86_iommu_get_default - get default IOMMU device
* @return: pointer to default IOMMU device
*/
X86IOMMUState *x86_iommu_get_default(void);
/*
* x86_iommu_get_type - get IOMMU type
*/
IommuType x86_iommu_get_type(void);
/**
* x86_iommu_iec_register_notifier - register IEC (Interrupt Entry
* Cache) notifiers
* @iommu: IOMMU device to register
* @fn: IEC notifier hook function
* @data: notifier private data
*/
void x86_iommu_iec_register_notifier(X86IOMMUState *iommu,
iec_notify_fn fn, void *data);
/**
* x86_iommu_iec_notify_all - Notify IEC invalidations
* @iommu: IOMMU device that sends the notification
* @global: whether this is a global invalidation. If true, @index
* and @mask are undefined.
* @index: starting index of interrupt entry to invalidate
* @mask: index mask for the invalidation
*/
void x86_iommu_iec_notify_all(X86IOMMUState *iommu, bool global,
uint32_t index, uint32_t mask);
#endif
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