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_ */ 76