src/system/kernel/vm/VMDeviceCache.h

   1 /*
   2  * Copyright 2008-2011, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Copyright 2005-2007, Axel Dörfler, axeld@pinc-software.de.
   4  * Distributed under the terms of the MIT License.
   5  *
   6  * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
   7  * Distributed under the terms of the NewOS License.
   8  */
   9 #ifndef _KERNEL_VM_STORE_DEVICE_H
  10 #define _KERNEL_VM_STORE_DEVICE_H
  11
  12
  13 #include <vm/VMCache.h>
  14
  15
  16 class VMDeviceCache : public VMCache {
  17 public:
  18                         status_t                        Init(addr_t baseAddress,
  19                                                                         uint32 allocationFlags);
  20
  21         virtual status_t                        Read(off_t offset, const generic_io_vec *vecs,
  22                                                                          size_t count, uint32 flags,
  23                                                                          generic_size_t *_numBytes);
  24         virtual status_t                        Write(off_t offset, const generic_io_vec *vecs,
  25                                                                           size_t count, uint32 flags,
  26                                                                           generic_size_t *_numBytes);
  27
  28 protected:
  29         virtual void                            DeleteObject();
  30
  31 private:
  32                         addr_t                          fBaseAddress;
  33 };
  34
  35
  36 #endif  /* _KERNEL_VM_STORE_DEVICE_H */