1 /* 2 * Copyright (c) 2014, STMicroelectronics International N.V. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TEE_MM_H 29 #define TEE_MM_H 30 31 #include <stdint.h> 32 #include <stdbool.h> 33 34 #include "tee_mm_unpg.h" 35 36 /*----------------------------------------------------------------------------- 37 * Init managed memory area 38 *---------------------------------------------------------------------------*/ 39 bool tee_mm_init(tee_mm_pool_t *pool, uint32_t lo, uint32_t hi, uint8_t shift, 40 uint32_t flags); 41 42 /*----------------------------------------------------------------------------- 43 * Kill managed memory area 44 *---------------------------------------------------------------------------*/ 45 void tee_mm_final(tee_mm_pool_t *pool); 46 47 /*----------------------------------------------------------------------------- 48 * Allocates size number of bytes in the paged virtual address space 49 * Returns a handle to the memory. The handle is used as an input to 50 * the tee_mm_free function. 51 *---------------------------------------------------------------------------*/ 52 tee_mm_entry_t *tee_mm_alloc(tee_mm_pool_t *pool, uint32_t size); 53 54 /* Allocate supplied memory range if it's free */ 55 tee_mm_entry_t *tee_mm_alloc2(tee_mm_pool_t *pool, tee_vaddr_t base, 56 size_t size); 57 58 /*----------------------------------------------------------------------------- 59 * Frees the entry in the paged virtual address space pointed to by the 60 * input parameter p 61 *---------------------------------------------------------------------------*/ 62 void tee_mm_free(tee_mm_entry_t *p); 63 64 /*----------------------------------------------------------------------------- 65 * Returns size in sections or pages 66 *---------------------------------------------------------------------------*/ 67 static inline uint32_t tee_mm_get_size(tee_mm_entry_t *p) 68 { 69 return p->size; 70 } 71 72 /*----------------------------------------------------------------------------- 73 * Returns offset from start of area in sections or pages 74 *---------------------------------------------------------------------------*/ 75 static inline uint32_t tee_mm_get_offset(tee_mm_entry_t *p) 76 { 77 return p->offset; 78 } 79 80 /* Return size of the mm entry in bytes */ 81 size_t tee_mm_get_bytes(const tee_mm_entry_t *mm); 82 83 bool tee_mm_addr_is_within_range(tee_mm_pool_t *pool, uint32_t addr); 84 85 bool tee_mm_is_empty(tee_mm_pool_t *pool); 86 87 #endif 88