From: Nicolin Chen <nicol...@nvidia.com>
Add a helper to allocate an iommufd device's virtual device (in the user
space) per a viommu instance.
Signed-off-by: Nicolin Chen <nicol...@nvidia.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.th...@huawei.com>
---
backends/iommufd.c | 26 ++++++++++++++++++++++++++
backends/trace-events | 1 +
include/system/iommufd.h | 4 ++++
3 files changed, 31 insertions(+)
diff --git a/backends/iommufd.c b/backends/iommufd.c
index 3fac08c96e..3511dd32ab 100644
--- a/backends/iommufd.c
+++ b/backends/iommufd.c
@@ -366,6 +366,32 @@ bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be,
uint32_t dev_id,
return true;
}
+bool iommufd_backend_alloc_vdev(IOMMUFDBackend *be, uint32_t dev_id,
+ uint32_t viommu_id, uint64_t virt_id,
+ uint32_t *out_vdev_id, Error **errp)
+{
+ int ret, fd = be->fd;
+ struct iommu_vdevice_alloc alloc_vdev = {
+ .size = sizeof(alloc_vdev),
+ .viommu_id = viommu_id,
+ .dev_id = dev_id,
+ .virt_id = virt_id,
+ };
+
+ ret = ioctl(fd, IOMMU_VDEVICE_ALLOC, &alloc_vdev);
+
+ trace_iommufd_backend_alloc_vdev(fd, dev_id, viommu_id, virt_id,
+ alloc_vdev.out_vdevice_id, ret);
+
+ if (ret) {
+ error_setg_errno(errp, errno, "IOMMU_VDEVICE_ALLOC failed");
+ return false;
+ }
+
+ *out_vdev_id = alloc_vdev.out_vdevice_id;
+ return true;
+}
+
bool host_iommu_device_iommufd_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
uint32_t hwpt_id, Error **errp)
{
diff --git a/backends/trace-events b/backends/trace-events
index a835827540..86c8f89e8a 100644
--- a/backends/trace-events
+++ b/backends/trace-events
@@ -20,3 +20,4 @@ iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool
start, int ret) "
iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t iova,
uint64_t size, uint64_t page_size, int ret) " iommufd=%d hwpt=%u
iova=0x%"PRIx64" size=0x%"PRIx64" page_size=0x%"PRIx64" (%d)"
iommufd_backend_invalidate_cache(int iommufd, uint32_t hwpt_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 hwpt_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 type, uint32_t dev_id,
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_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)"
diff --git a/include/system/iommufd.h b/include/system/iommufd.h
index 7e5507f2db..53920bae5b 100644
--- a/include/system/iommufd.h
+++ b/include/system/iommufd.h
@@ -59,6 +59,10 @@ bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be,
uint32_t dev_id,
uint32_t viommu_type, uint32_t hwpt_id,
uint32_t *out_hwpt, Error **errp);
+bool iommufd_backend_alloc_vdev(IOMMUFDBackend *be, uint32_t dev_id,
+ uint32_t viommu_id, uint64_t virt_id,
+ uint32_t *out_vdev_id, 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,
--
2.34.1
