palacios/include/palacios/vmm_dev_mgr.h

   1 #ifndef _vmm_dev_mgr
   2 #define _vmm_dev_mgr
   3
   4 #include <palacios/vmm_types.h>
   5 #include <palacios/vmm_device_types.h>
   6
   7 struct vm_device;
   8 struct guest_info;
   9
  10
  11 struct vmm_dev_mgr {
  12   struct guest_info   *vm;
  13   struct vm_device  *dev_list;
  14   uint_t             num_devices;
  15 };
  16
  17
  18 enum access_control {DEVICE_EMULATED, DEVICE_PASSTHROUGH} ;
  19 enum access_type {DEVICE_READ, DEVICE_WRITE, DEVICE_READWRITE} ;
  20
  21 struct vm_device_io_hook {
  22   enum access_control control;
  23   enum access_type    atype;
  24
  25   ushort_t            guest_port;
  26
  27   // Do not touch anything below this
  28
  29   struct vm_device_io_hook *next, *prev;
  30 };
  31
  32 struct vm_device_mem_hook {
  33   enum access_control control;
  34   enum access_type    atype;
  35
  36   void             *guest_physical_start;
  37   void             *guest_physical_end;
  38
  39   // Do not touch anything below this
  40
  41   struct vm_device_mem_hook *next, *prev;
  42
  43 };
  44
  45
  46
  47 // Registration of devices
  48
  49 //
  50 // The following device manager functions should only be called
  51 // when the guest is stopped
  52 //
  53
  54 int dev_mgr_init(struct vmm_dev_mgr *mgr, struct guest_info *vm);
  55 int dev_mgr_deinit(struct vmm_dev_mgr *mgr);
  56
  57 int dev_mgr_attach_device(struct guest_info *vm,
  58                           struct vm_device *device);
  59 int dev_mgr_detach_device(struct guest_info *vm,
  60                           struct vm_device *device);
  61
  62
  63 int dev_mgr_hook_io(struct guest_info    *vm,
  64                     struct vm_device   *device,
  65                     ushort_t            portno,
  66                     enum access_control control,
  67                     enum access_type    atype);
  68
  69 int dev_mgr_unhook_io(struct guest_info    *vm,
  70                       struct vm_device   *device,
  71                       ushort_t            portno);
  72
  73 int dev_mgr_hook_mem(struct guest_info    *vm,
  74                      struct vm_device   *device,
  75                      void               *guest_physical_address_start,
  76                      void               *guest_physical_address_end,
  77                      enum access_control control,
  78                      enum access_type    atype);
  79
  80 int dev_mgr_unhook_mem(struct guest_info    *vm,
  81                        struct vm_device   *device,
  82                        void               *guest_physical_address_start,
  83                        void               *guest_physical_address_end);
  84
  85 //
  86 // Strictly a helper - the device is resposible for unhooking on disconnect
  87 //
  88
  89 int dev_mgr_unhook_device(struct guest_info  *vm,
  90                           struct vm_device *device);
  91
  92
  93 #endif