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authorJagannathan Raman <jag.raman@oracle.com>2022-06-13 16:26:33 -0400
committerStefan Hajnoczi <stefanha@redhat.com>2022-06-15 16:43:42 +0100
commit08cf3dc611991e9697f62458107e13f2c582869a (patch)
tree074a48604250f4bef72d3986fdb72a3873b5f28d /hw/pci/pci.c
parent3123f93d6b85b69ab77f409456fac8ded895efed (diff)
downloadfocaccia-qemu-08cf3dc611991e9697f62458107e13f2c582869a.tar.gz
focaccia-qemu-08cf3dc611991e9697f62458107e13f2c582869a.zip
vfio-user: handle device interrupts
Forward remote device's interrupts to the guest

Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Message-id: 9523479eaafe050677f4de2af5dd0df18c27cfd9.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/pci/pci.c')
-rw-r--r--hw/pci/pci.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 6e7015329c..2f450f6a72 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -317,6 +317,15 @@ void pci_device_deassert_intx(PCIDevice *dev)
     }
 }
 
+static void pci_msi_trigger(PCIDevice *dev, MSIMessage msg)
+{
+    MemTxAttrs attrs = {};
+
+    attrs.requester_id = pci_requester_id(dev);
+    address_space_stl_le(&dev->bus_master_as, msg.address, msg.data,
+                         attrs, NULL);
+}
+
 static void pci_reset_regions(PCIDevice *dev)
 {
     int r;
@@ -1212,6 +1221,8 @@ static void pci_qdev_unrealize(DeviceState *dev)
 
     pci_device_deassert_intx(pci_dev);
     do_pci_unregister_device(pci_dev);
+
+    pci_dev->msi_trigger = NULL;
 }
 
 void pci_register_bar(PCIDevice *pci_dev, int region_num,
@@ -2251,6 +2262,8 @@ static void pci_qdev_realize(DeviceState *qdev, Error **errp)
     }
 
     pci_set_power(pci_dev, true);
+
+    pci_dev->msi_trigger = pci_msi_trigger;
 }
 
 PCIDevice *pci_new_multifunction(int devfn, bool multifunction,