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[Qemu-arm] [RFC v6 10/22] virtio-iommu: Implement attach/detach command
From: |
Eric Auger |
Subject: |
[Qemu-arm] [RFC v6 10/22] virtio-iommu: Implement attach/detach command |
Date: |
Mon, 12 Feb 2018 18:58:12 +0000 |
This patch implements the endpoint attach/detach to/from
a domain.
Signed-off-by: Eric Auger <address@hidden>
---
hw/virtio/virtio-iommu.c | 39 +++++++++++++++++++++++++++++++++------
1 file changed, 33 insertions(+), 6 deletions(-)
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index 207b17a..69ff516 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -114,8 +114,8 @@ static void virtio_iommu_put_endpoint(gpointer data)
g_free(ep);
}
-viommu_domain *virtio_iommu_get_domain(VirtIOIOMMU *s, uint32_t domain_id);
-viommu_domain *virtio_iommu_get_domain(VirtIOIOMMU *s, uint32_t domain_id)
+static viommu_domain *virtio_iommu_get_domain(VirtIOIOMMU *s,
+ uint32_t domain_id)
{
viommu_domain *domain;
@@ -194,6 +194,8 @@ static int virtio_iommu_attach(VirtIOIOMMU *s,
uint32_t domain_id = le32_to_cpu(req->domain);
uint32_t ep_id = le32_to_cpu(req->endpoint);
uint32_t reserved = le32_to_cpu(req->reserved);
+ viommu_domain *domain;
+ viommu_endpoint *ep;
trace_virtio_iommu_attach(domain_id, ep_id);
@@ -201,7 +203,22 @@ static int virtio_iommu_attach(VirtIOIOMMU *s,
return VIRTIO_IOMMU_S_INVAL;
}
- return VIRTIO_IOMMU_S_UNSUPP;
+ ep = virtio_iommu_get_endpoint(s, ep_id);
+ if (ep->domain) {
+ /*
+ * the device is already attached to a domain,
+ * detach it first
+ */
+ virtio_iommu_detach_endpoint_from_domain(ep);
+ }
+
+ domain = virtio_iommu_get_domain(s, domain_id);
+ QLIST_INSERT_HEAD(&domain->endpoint_list, ep, next);
+
+ ep->domain = domain;
+ g_tree_ref(domain->mappings);
+
+ return VIRTIO_IOMMU_S_OK;
}
static int virtio_iommu_detach(VirtIOIOMMU *s,
@@ -209,14 +226,24 @@ static int virtio_iommu_detach(VirtIOIOMMU *s,
{
uint32_t ep_id = le32_to_cpu(req->endpoint);
uint32_t reserved = le32_to_cpu(req->reserved);
-
- trace_virtio_iommu_detach(ep_id);
+ viommu_endpoint *ep;
if (reserved) {
return VIRTIO_IOMMU_S_INVAL;
}
- return VIRTIO_IOMMU_S_UNSUPP;
+ ep = g_tree_lookup(s->endpoints, GUINT_TO_POINTER(ep_id));
+ if (!ep) {
+ return VIRTIO_IOMMU_S_NOENT;
+ }
+
+ if (!ep->domain) {
+ return VIRTIO_IOMMU_S_INVAL;
+ }
+
+ virtio_iommu_detach_endpoint_from_domain(ep);
+ trace_virtio_iommu_detach(ep_id);
+ return VIRTIO_IOMMU_S_OK;
}
static int virtio_iommu_map(VirtIOIOMMU *s,
--
1.9.1
- [Qemu-arm] [RFC v6 00/22] VIRTIO-IOMMU device, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 01/22] machine: Add a get_primary_pci_bus callback, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 02/22] hw/arm/virt: Implement get_primary_pci_bus, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 03/22] pc: Implement get_primary_pci_bus, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 04/22] update-linux-headers: Import virtio_iommu.h, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 05/22] linux-headers: Partial update for virtio-iommu v0.6, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 06/22] virtio-iommu: Add skeleton, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 07/22] virtio-iommu: Decode the command payload, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 08/22] virtio-iommu: Add the iommu regions, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 09/22] virtio-iommu: Register attached endpoints, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 10/22] virtio-iommu: Implement attach/detach command,
Eric Auger <=
- [Qemu-arm] [RFC v6 11/22] virtio-iommu: Implement map/unmap, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 12/22] virtio-iommu: Implement translate, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 14/22] virtio-iommu: Add an msi_bypass property, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 13/22] virtio-iommu: Implement probe request, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 15/22] virtio-iommu: Implement fault reporting, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 16/22] virtio_iommu: Handle reserved regions in translation process, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 17/22] hw/arm/virt: Add virtio-iommu to the virt board, Eric Auger, 2018/02/12
- [Qemu-arm] [RFC v6 18/22] hw/arm/virt-acpi-build: Add virtio-iommu node in IORT table, Eric Auger, 2018/02/12