include/sysemu/iommufd.h

   1 #ifndef SYSEMU_IOMMUFD_H
   2 #define SYSEMU_IOMMUFD_H
   3
   4 #include "qom/object.h"
   5 #include "qemu/thread.h"
   6 #include "exec/hwaddr.h"
   7 #include "exec/cpu-common.h"
   8
   9 #define TYPE_IOMMUFD_BACKEND "iommufd"
  10 OBJECT_DECLARE_TYPE(IOMMUFDBackend, IOMMUFDBackendClass, IOMMUFD_BACKEND)
  11
  12 struct IOMMUFDBackendClass {
  13     ObjectClass parent_class;
  14 };
  15
  16 struct IOMMUFDBackend {
  17     Object parent;
  18
  19     /*< protected >*/
  20     int fd;            /* /dev/iommu file descriptor */
  21     bool owned;        /* is the /dev/iommu opened internally */
  22     QemuMutex lock;
  23     uint32_t users;
  24
  25     /*< public >*/
  26 };
  27
  28 int iommufd_backend_connect(IOMMUFDBackend *be, Error **errp);
  29 void iommufd_backend_disconnect(IOMMUFDBackend *be);
  30
  31 int iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id,
  32                                Error **errp);
  33 void iommufd_backend_free_id(IOMMUFDBackend *be, uint32_t id);
  34 int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova,
  35                             ram_addr_t size, void *vaddr, bool readonly);
  36 int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id,
  37                               hwaddr iova, ram_addr_t size);
  38 #endif