dmm.h

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/*
 * dmm.h
 *
 * DSP-BIOS Bridge driver support functions for TI OMAP processors.
 *
 * The Dynamic Memory Mapping(DMM) module manages the DSP Virtual address
 * space that can be directly mapped to any MPU buffer or memory region.
 *
 * Copyright (C) 2005-2006 Texas Instruments, Inc.
 *
 * This package is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef DMM_
#define DMM_

#include <dspbridge/dbdefs.h>

struct dmm_object;

/* DMM attributes used in dmm_create() */
struct dmm_mgrattrs {
    u32 reserved;
};

#define DMMPOOLSIZE      0x4000000

/*
 *  ======== dmm_get_handle ========
 *  Purpose:
 *      Return the dynamic memory manager object for this device.
 *      This is typically called from the client process.
 */

extern int dmm_get_handle(void *hprocessor,
                 struct dmm_object **dmm_manager);

extern int dmm_reserve_memory(struct dmm_object *dmm_mgr,
                     u32 size, u32 *prsv_addr);

extern int dmm_un_reserve_memory(struct dmm_object *dmm_mgr,
                    u32 rsv_addr);

extern int dmm_map_memory(struct dmm_object *dmm_mgr, u32 addr,
                 u32 size);

extern int dmm_un_map_memory(struct dmm_object *dmm_mgr,
                    u32 addr, u32 *psize);

extern int dmm_destroy(struct dmm_object *dmm_mgr);

extern int dmm_delete_tables(struct dmm_object *dmm_mgr);

extern int dmm_create(struct dmm_object **dmm_manager,
                 struct dev_object *hdev_obj,
                 const struct dmm_mgrattrs *mgr_attrts);

extern int dmm_create_tables(struct dmm_object *dmm_mgr,
                    u32 addr, u32 size);

#ifdef DSP_DMM_DEBUG
u32 dmm_mem_map_dump(struct dmm_object *dmm_mgr);
#endif

#endif /* DMM_ */