release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/tidspbridge/include/dspbridge/dmm.h

   1 /*
   2  * dmm.h
   3  *
   4  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
   5  *
   6  * The Dynamic Memory Mapping(DMM) module manages the DSP Virtual address
   7  * space that can be directly mapped to any MPU buffer or memory region.
   8  *
   9  * Copyright (C) 2005-2006 Texas Instruments, Inc.
  10  *
  11  * This package is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  *
  15  * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  17  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  18  */
  19
  20 #ifndef DMM_
  21 #define DMM_
  22
  23 #include <dspbridge/dbdefs.h>
  24
  25 struct dmm_object;
  26
  27 /* DMM attributes used in dmm_create() */
  28 struct dmm_mgrattrs {
  29         u32 reserved;
  30 };
  31
  32 #define DMMPOOLSIZE      0x4000000
  33
  34 /*
  35  *  ======== dmm_get_handle ========
  36  *  Purpose:
  37  *      Return the dynamic memory manager object for this device.
  38  *      This is typically called from the client process.
  39  */
  40
  41 extern int dmm_get_handle(void *hprocessor,
  42                                  struct dmm_object **dmm_manager);
  43
  44 extern int dmm_reserve_memory(struct dmm_object *dmm_mgr,
  45                                      u32 size, u32 *prsv_addr);
  46
  47 extern int dmm_un_reserve_memory(struct dmm_object *dmm_mgr,
  48                                         u32 rsv_addr);
  49
  50 extern int dmm_map_memory(struct dmm_object *dmm_mgr, u32 addr,
  51                                  u32 size);
  52
  53 extern int dmm_un_map_memory(struct dmm_object *dmm_mgr,
  54                                     u32 addr, u32 *psize);
  55
  56 extern int dmm_destroy(struct dmm_object *dmm_mgr);
  57
  58 extern int dmm_delete_tables(struct dmm_object *dmm_mgr);
  59
  60 extern int dmm_create(struct dmm_object **dmm_manager,
  61                              struct dev_object *hdev_obj,
  62                              const struct dmm_mgrattrs *mgr_attrts);
  63
  64 extern bool dmm_init(void);
  65
  66 extern void dmm_exit(void);
  67
  68 extern int dmm_create_tables(struct dmm_object *dmm_mgr,
  69                                     u32 addr, u32 size);
  70
  71 #ifdef DSP_DMM_DEBUG
  72 u32 dmm_mem_map_dump(struct dmm_object *dmm_mgr);
  73 #endif
  74
  75 #endif /* DMM_ */