starred/qemu-qemu
1
0
Fork 0
mirror of https://github.com/qemu/qemu.git synced 2026-07-08 17:46:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

backends/iommufd: Update iommufd_backend_alloc_viommu to allow user ptr

Browse Source 
The updated IOMMUFD VIOMMU_ALLOC uAPI allows userspace to provide a data
buffer when creating a vIOMMU (e.g. for Tegra241 CMDQV). Extend
iommufd_backend_alloc_viommu() to pass a user pointer and size to the
kernel.

Update the caller accordingly.

Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Shameer Kolothum <skolothumtho@nvidia.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Message-id: 20260609112552.378999-3-skolothumtho@nvidia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Nicolin Chen
2026-06-09 12:25:23 +01:00
committed by Peter Maydell
parent 3e79b45e04
commit d2f3b3156d
4 changed files with 8 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
backends/iommufd.c
View File

@@ -463,6 +463,7 @@ bool iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t id,
bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, uint32_t dev_id,
uint32_t viommu_type, uint32_t hwpt_id,
void *data_ptr, uint32_t data_len,
uint32_t *out_viommu_id, Error **errp)
{
int ret;
@@ -471,11 +472,14 @@ bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, uint32_t dev_id,
.type = viommu_type,
.dev_id = dev_id,
.hwpt_id = hwpt_id,
.data_len = data_len,
.data_uptr = (uintptr_t)data_ptr,
};
ret = ioctl(be->fd, IOMMU_VIOMMU_ALLOC, &alloc_viommu);
trace_iommufd_backend_alloc_viommu(be->fd, dev_id, viommu_type, hwpt_id,
(uintptr_t)data_ptr, data_len,
alloc_viommu.out_viommu_id, ret);
if (ret) {
error_setg_errno(errp, errno, "IOMMU_VIOMMU_ALLOC failed");

2
backends/trace-events
View File

@@ -21,7 +21,7 @@ iommufd_backend_free_id(int iommufd, uint32_t id, int ret) " iommufd=%d id=%d (%
iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool start, int ret) " iommufd=%d hwpt=%u enable=%d (%d)"
iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t iova, uint64_t size, uint64_t flags, uint64_t page_size, int ret) " iommufd=%d hwpt=%u iova=0x%"PRIx64" size=0x%"PRIx64" flags=0x%"PRIx64" page_size=0x%"PRIx64" (%d)"
iommufd_backend_invalidate_cache(int iommufd, uint32_t id, uint32_t data_type, uint32_t entry_len, uint32_t entry_num, uint32_t done_num, uint64_t data_ptr, int ret) " iommufd=%d id=%u data_type=%u entry_len=%u entry_num=%u done_num=%u data_ptr=0x%"PRIx64" (%d)"
iommufd_backend_alloc_viommu(int iommufd, uint32_t dev_id, uint32_t type, uint32_t hwpt_id, uint32_t viommu_id, int ret) " iommufd=%d type=%u dev_id=%u hwpt_id=%u viommu_id=%u (%d)"
iommufd_backend_alloc_viommu(int iommufd, uint32_t dev_id, uint32_t type, uint32_t hwpt_id, uint64_t data_ptr, uint32_t data_len, uint32_t viommu_id, int ret) " iommufd=%d type=%u dev_id=%u hwpt_id=%u data_ptr=0x%"PRIx64" data_len=0x%x viommu_id=%u (%d)"
iommufd_backend_alloc_vdev(int iommufd, uint32_t dev_id, uint32_t viommu_id, uint64_t virt_id, uint32_t vdev_id, int ret) " iommufd=%d dev_id=%u viommu_id=%u virt_id=0x%"PRIx64" vdev_id=%u (%d)"
iommufd_viommu_alloc_eventq(int iommufd, uint32_t viommu_id, uint32_t type, uint32_t veventq_id, uint32_t veventq_fd, int ret) " iommufd=%d viommu_id=%u type=%u veventq_id=%u veventq_fd=%u (%d)"