554f5e1604
This patch enables device IOTLB support for intel iommu. The major work is to implement QI device IOTLB descriptor processing and notify the device through iommu notifier. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com>
114 lines
3.6 KiB
C
114 lines
3.6 KiB
C
/*
|
|
* 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
|