/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
25struct dmm_object;
26
27/* DMM attributes used in dmm_create() */
28struct 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
41extern int dmm_get_handle(void *hprocessor,
42				 struct dmm_object **dmm_manager);
43
44extern int dmm_reserve_memory(struct dmm_object *dmm_mgr,
45				     u32 size, u32 *prsv_addr);
46
47extern int dmm_un_reserve_memory(struct dmm_object *dmm_mgr,
48					u32 rsv_addr);
49
50extern int dmm_map_memory(struct dmm_object *dmm_mgr, u32 addr,
51				 u32 size);
52
53extern int dmm_un_map_memory(struct dmm_object *dmm_mgr,
54				    u32 addr, u32 *psize);
55
56extern int dmm_destroy(struct dmm_object *dmm_mgr);
57
58extern int dmm_delete_tables(struct dmm_object *dmm_mgr);
59
60extern int dmm_create(struct dmm_object **dmm_manager,
61			     struct dev_object *hdev_obj,
62			     const struct dmm_mgrattrs *mgr_attrts);
63
64extern bool dmm_init(void);
65
66extern void dmm_exit(void);
67
68extern int dmm_create_tables(struct dmm_object *dmm_mgr,
69				    u32 addr, u32 size);
70
71#ifdef DSP_DMM_DEBUG
72u32 dmm_mem_map_dump(struct dmm_object *dmm_mgr);
73#endif
74
75#endif /* DMM_ */