u_mm.h revision 17158c2f00f5bee29ec8239367fd5498f22e4a91
117158c2f00f5bee29ec8239367fd5498f22e4a91José Fonseca/************************************************************************** 217158c2f00f5bee29ec8239367fd5498f22e4a91José Fonseca * 3df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * Copyright (C) 1999 Wittawat Yamwong 4df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * 5df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * Permission is hereby granted, free of charge, to any person obtaining a 6df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * copy of this software and associated documentation files (the "Software"), 7df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * to deal in the Software without restriction, including without limitation 8df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * and/or sell copies of the Software, and to permit persons to whom the 10df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * Software is furnished to do so, subject to the following conditions: 11df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * 12df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * The above copyright notice and this permission notice shall be included 13df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * in all copies or substantial portions of the Software. 14df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * 15df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 16df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 19df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 21df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 2217158c2f00f5bee29ec8239367fd5498f22e4a91José Fonseca * 2317158c2f00f5bee29ec8239367fd5498f22e4a91José Fonseca **************************************************************************/ 24df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 25df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 26df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca/** 2717158c2f00f5bee29ec8239367fd5498f22e4a91José Fonseca * @file 28df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * Memory manager code. Primarily used by device drivers to manage texture 29df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * heaps, etc. 30df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca */ 31df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 32df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 3317158c2f00f5bee29ec8239367fd5498f22e4a91José Fonseca#ifndef _U_MM_H_ 3417158c2f00f5bee29ec8239367fd5498f22e4a91José Fonseca#define _U_MM_H_ 35df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 36df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 37df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonsecastruct mem_block { 38df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca struct mem_block *next, *prev; 39df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca struct mem_block *next_free, *prev_free; 40df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca struct mem_block *heap; 41df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca int ofs,size; 42df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca unsigned int free:1; 43df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca unsigned int reserved:1; 44df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca}; 45df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 46df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 47df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 48df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca/** 49df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * input: total size in bytes 50df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * return: a heap pointer if OK, NULL if error 51df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca */ 52df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonsecaextern struct mem_block *mmInit(int ofs, int size); 53df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 54df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca/** 55df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * Allocate 'size' bytes with 2^align2 bytes alignment, 56df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * restrict the search to free memory after 'startSearch' 57df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * depth and back buffers should be in different 4mb banks 58df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * to get better page hits if possible 59df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * input: size = size of block 60df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * align2 = 2^align2 bytes alignment 61df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * startSearch = linear offset from start of heap to begin search 62df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * return: pointer to the allocated block, 0 if error 63df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca */ 64df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonsecaextern struct mem_block *mmAllocMem(struct mem_block *heap, int size, int align2, 65df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca int startSearch); 66df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 67df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca/** 68df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * Free block starts at offset 69df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * input: pointer to a block 70df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * return: 0 if OK, -1 if error 71df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca */ 72df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonsecaextern int mmFreeMem(struct mem_block *b); 73df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 74df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca/** 75df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * Free block starts at offset 76df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * input: pointer to a heap, start offset 77df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * return: pointer to a block 78df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca */ 79df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonsecaextern struct mem_block *mmFindBlock(struct mem_block *heap, int start); 80df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 81df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca/** 82df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * destroy MM 83df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca */ 84df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonsecaextern void mmDestroy(struct mem_block *mmInit); 85df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 86df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca/** 87df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca * For debuging purpose. 88df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca */ 89df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonsecaextern void mmDumpMemInfo(const struct mem_block *mmInit); 90df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca 91df8ab3140ce05599e1dc983ac211a30fc845d9b5José Fonseca#endif 92