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[PATCH v8 7/8] virtio-iommu: add iommu replay
From: |
Bharat Bhushan |
Subject: |
[PATCH v8 7/8] virtio-iommu: add iommu replay |
Date: |
Wed, 18 Mar 2020 15:41:58 +0530 |
Default replay does not work with virtio-iommu,
so this patch provide virtio-iommu replay functionality.
Signed-off-by: Bharat Bhushan <address@hidden>
---
hw/virtio/virtio-iommu.c | 44 ++++++++++++++++++++++++++++++++++++++++
hw/virtio/trace-events | 1 +
2 files changed, 45 insertions(+)
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index 4d522a636a..b68644f7c3 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -771,6 +771,49 @@ static void
virtio_iommu_set_page_size_mask(IOMMUMemoryRegion *mr,
s->config.page_size_mask = page_size_mask;
}
+static gboolean virtio_iommu_remap(gpointer key, gpointer value, gpointer data)
+{
+ VirtIOIOMMUMapping *mapping = (VirtIOIOMMUMapping *) value;
+ VirtIOIOMMUInterval *interval = (VirtIOIOMMUInterval *) key;
+ IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;
+
+ trace_virtio_iommu_remap(interval->low, mapping->phys_addr,
+ interval->high - interval->low + 1);
+ /* unmap previous entry and map again */
+ virtio_iommu_notify_unmap(mr, interval->low,
+ interval->high - interval->low + 1);
+
+ virtio_iommu_notify_map(mr, interval->low, mapping->phys_addr,
+ interval->high - interval->low + 1);
+ return false;
+}
+
+static void virtio_iommu_replay(IOMMUMemoryRegion *mr, IOMMUNotifier *n)
+{
+ IOMMUDevice *sdev = container_of(mr, IOMMUDevice, iommu_mr);
+ VirtIOIOMMU *s = sdev->viommu;
+ uint32_t sid;
+ VirtIOIOMMUEndpoint *ep;
+
+ sid = virtio_iommu_get_bdf(sdev);
+
+ qemu_mutex_lock(&s->mutex);
+
+ if (!s->endpoints) {
+ goto unlock;
+ }
+
+ ep = g_tree_lookup(s->endpoints, GUINT_TO_POINTER(sid));
+ if (!ep || !ep->domain) {
+ goto unlock;
+ }
+
+ g_tree_foreach(ep->domain->mappings, virtio_iommu_remap, mr);
+
+unlock:
+ qemu_mutex_unlock(&s->mutex);
+}
+
static void virtio_iommu_device_realize(DeviceState *dev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
@@ -989,6 +1032,7 @@ static void
virtio_iommu_memory_region_class_init(ObjectClass *klass,
imrc->translate = virtio_iommu_translate;
imrc->iommu_set_page_size_mask = virtio_iommu_set_page_size_mask;
+ imrc->replay = virtio_iommu_replay;
}
static const TypeInfo virtio_iommu_info = {
diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index d94a1cd8a3..8bae651191 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -75,3 +75,4 @@ virtio_iommu_translate_out(uint64_t virt_addr, uint64_t
phys_addr, uint32_t sid)
virtio_iommu_report_fault(uint8_t reason, uint32_t flags, uint32_t endpoint,
uint64_t addr) "FAULT reason=%d flags=%d endpoint=%d address =0x%"PRIx64
virtio_iommu_notify_map(const char *name, uint64_t iova, uint64_t paddr,
uint64_t map_size) "mr=%s iova=0x%"PRIx64" pa=0x%" PRIx64" size=0x%"PRIx64
virtio_iommu_notify_unmap(const char *name, uint64_t iova, uint64_t map_size)
"mr=%s iova=0x%"PRIx64" size=0x%"PRIx64
+virtio_iommu_remap(uint64_t iova, uint64_t pa, uint64_t size)
"iova=0x%"PRIx64" pa=0x%" PRIx64" size=0x%"PRIx64""
--
2.17.1
- [PATCH v8 0/8] virtio-iommu: VFIO integration, Bharat Bhushan, 2020/03/18
- [PATCH v8 5/8] virtio-iommu: Add iommu notifier for map/unmap, Bharat Bhushan, 2020/03/18
- [PATCH v8 6/8] virtio-iommu: Call iommu notifier for attach/detach, Bharat Bhushan, 2020/03/18
- [PATCH v8 7/8] virtio-iommu: add iommu replay,
Bharat Bhushan <=
- [PATCH v8 8/8] virtio-iommu: add iommu notifier memory-region, Bharat Bhushan, 2020/03/18
- Re: [PATCH v8 0/8] virtio-iommu: VFIO integration, Auger Eric, 2020/03/18