[Qemu-devel] [RFC PATCH 3/7] pci: call IOMMU hooks

[Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>]

Memory accesses must go through the IOMMU layer.

Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
---
 hw/pci.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/hw/pci.c b/hw/pci.c
index 6871728..9c5d706 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -22,6 +22,7 @@
  * THE SOFTWARE.
  */
 #include "hw.h"
+#include "iommu.h"
 #include "pci.h"
 #include "monitor.h"
 #include "net.h"
@@ -733,12 +734,25 @@ static void do_pci_unregister_device(PCIDevice *pci_dev)
     pci_config_free(pci_dev);
 }
 
+#ifdef CONFIG_IOMMU
+static inline int pci_iommu_register_device(PCIBus *bus, PCIDevice *dev)
+{
+    return iommu_register_device(bus->qbus.iommu, &dev->qdev);
+}
+#else
+static inline int pci_iommu_register_device(PCIBus *bus, PCIDevice *dev)
+{
+    return 0;
+}
+#endif
+
 PCIDevice *pci_register_device(PCIBus *bus, const char *name,
                                int instance_size, int devfn,
                                PCIConfigReadFunc *config_read,
                                PCIConfigWriteFunc *config_write)
 {
     PCIDevice *pci_dev;
+    int err;
 
     pci_dev = qemu_mallocz(instance_size);
     pci_dev = do_pci_register_device(pci_dev, bus, name, devfn,
@@ -747,6 +761,13 @@ PCIDevice *pci_register_device(PCIBus *bus, const char *name,
     if (pci_dev == NULL) {
         hw_error("PCI: can't register device\n");
     }
+
+    err = pci_iommu_register_device(bus, pci_dev);
+    if (err) {
+        hw_error("PCI: can't register device with IOMMU\n");
+        return NULL;
+    }
+
     return pci_dev;
 }
 
-- 
1.7.1