mirror of
https://github.com/mborgerson/xemu.git
synced 2026-05-05 04:13:39 +00:00
70a7e33ddb
The 'ram_addr_t' type is described as: a QEMU internal address space that maps guest RAM physical addresses into an intermediate address space that can map to host virtual address spaces. This doesn't represent well an IOVA mapping size. Simply use the uint64_t type. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Cédric Le Goater <clg@redhat.com> Link: https://lore.kernel.org/qemu-devel/20250930123528.42878-2-philmd@linaro.org Signed-off-by: Cédric Le Goater <clg@redhat.com>
128 lines
4.7 KiB
C
128 lines
4.7 KiB
C
/*
|
|
* iommufd container backend declaration
|
|
*
|
|
* Copyright (C) 2024 Intel Corporation.
|
|
* Copyright Red Hat, Inc. 2024
|
|
*
|
|
* Authors: Yi Liu <yi.l.liu@intel.com>
|
|
* Eric Auger <eric.auger@redhat.com>
|
|
* Zhenzhong Duan <zhenzhong.duan@intel.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#ifndef SYSTEM_IOMMUFD_H
|
|
#define SYSTEM_IOMMUFD_H
|
|
|
|
#include "qom/object.h"
|
|
#include "exec/hwaddr.h"
|
|
#include "exec/cpu-common.h"
|
|
#include "system/host_iommu_device.h"
|
|
|
|
#define TYPE_IOMMUFD_BACKEND "iommufd"
|
|
OBJECT_DECLARE_TYPE(IOMMUFDBackend, IOMMUFDBackendClass, IOMMUFD_BACKEND)
|
|
|
|
struct IOMMUFDBackendClass {
|
|
ObjectClass parent_class;
|
|
};
|
|
|
|
struct IOMMUFDBackend {
|
|
Object parent;
|
|
|
|
/*< protected >*/
|
|
int fd; /* /dev/iommu file descriptor */
|
|
bool owned; /* is the /dev/iommu opened internally */
|
|
Error *cpr_blocker;/* set if be does not support CPR */
|
|
uint32_t users;
|
|
|
|
/*< public >*/
|
|
};
|
|
|
|
bool iommufd_backend_connect(IOMMUFDBackend *be, Error **errp);
|
|
void iommufd_backend_disconnect(IOMMUFDBackend *be);
|
|
|
|
bool iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id,
|
|
Error **errp);
|
|
void iommufd_backend_free_id(IOMMUFDBackend *be, uint32_t id);
|
|
int iommufd_backend_map_file_dma(IOMMUFDBackend *be, uint32_t ioas_id,
|
|
hwaddr iova, uint64_t size, int fd,
|
|
unsigned long start, bool readonly);
|
|
int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova,
|
|
uint64_t size, void *vaddr, bool readonly);
|
|
int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id,
|
|
hwaddr iova, uint64_t size);
|
|
bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
|
|
uint32_t *type, void *data, uint32_t len,
|
|
uint64_t *caps, Error **errp);
|
|
bool iommufd_backend_alloc_hwpt(IOMMUFDBackend *be, uint32_t dev_id,
|
|
uint32_t pt_id, uint32_t flags,
|
|
uint32_t data_type, uint32_t data_len,
|
|
void *data_ptr, uint32_t *out_hwpt,
|
|
Error **errp);
|
|
bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be, uint32_t hwpt_id,
|
|
bool start, Error **errp);
|
|
bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id,
|
|
uint64_t iova, ram_addr_t size,
|
|
uint64_t page_size, uint64_t *data,
|
|
Error **errp);
|
|
bool iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t id,
|
|
uint32_t data_type, uint32_t entry_len,
|
|
uint32_t *entry_num, void *data,
|
|
Error **errp);
|
|
|
|
bool iommufd_change_process_capable(IOMMUFDBackend *be);
|
|
bool iommufd_change_process(IOMMUFDBackend *be, Error **errp);
|
|
|
|
#define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd"
|
|
OBJECT_DECLARE_TYPE(HostIOMMUDeviceIOMMUFD, HostIOMMUDeviceIOMMUFDClass,
|
|
HOST_IOMMU_DEVICE_IOMMUFD)
|
|
|
|
/* Overload of the host IOMMU device for the iommufd backend */
|
|
struct HostIOMMUDeviceIOMMUFD {
|
|
HostIOMMUDevice parent_obj;
|
|
|
|
IOMMUFDBackend *iommufd;
|
|
uint32_t devid;
|
|
uint32_t hwpt_id;
|
|
};
|
|
|
|
struct HostIOMMUDeviceIOMMUFDClass {
|
|
HostIOMMUDeviceClass parent_class;
|
|
|
|
/**
|
|
* @attach_hwpt: attach host IOMMU device to IOMMUFD hardware page table.
|
|
* VFIO and VDPA device can have different implementation.
|
|
*
|
|
* Mandatory callback.
|
|
*
|
|
* @idev: host IOMMU device backed by IOMMUFD backend.
|
|
*
|
|
* @hwpt_id: ID of IOMMUFD hardware page table.
|
|
*
|
|
* @errp: pass an Error out when attachment fails.
|
|
*
|
|
* Returns: true on success, false on failure.
|
|
*/
|
|
bool (*attach_hwpt)(HostIOMMUDeviceIOMMUFD *idev, uint32_t hwpt_id,
|
|
Error **errp);
|
|
/**
|
|
* @detach_hwpt: detach host IOMMU device from IOMMUFD hardware page table.
|
|
* VFIO and VDPA device can have different implementation.
|
|
*
|
|
* Mandatory callback.
|
|
*
|
|
* @idev: host IOMMU device backed by IOMMUFD backend.
|
|
*
|
|
* @errp: pass an Error out when attachment fails.
|
|
*
|
|
* Returns: true on success, false on failure.
|
|
*/
|
|
bool (*detach_hwpt)(HostIOMMUDeviceIOMMUFD *idev, Error **errp);
|
|
};
|
|
|
|
bool host_iommu_device_iommufd_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
|
|
uint32_t hwpt_id, Error **errp);
|
|
bool host_iommu_device_iommufd_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
|
|
Error **errp);
|
|
#endif
|