include/sysemu/iommufd.h

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