| 1 | /* |
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| 2 | * hal_ppm.h - Generic Physical Page Manager API definition. |
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| 3 | * |
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| 4 | * Authors Alain Greiner (2016,2017) |
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| 5 | * Maxime Villard (2017) |
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| 6 | * |
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| 7 | * Copyright (c) UPMC Sorbonne Universites |
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| 8 | * |
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| 9 | * This file is part of ALMOS-MKH. |
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| 10 | * |
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| 11 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 12 | * under the terms of the GNU General Public License as published by |
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| 13 | * the Free Software Foundation; version 2.0 of the License. |
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| 14 | * |
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| 15 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 18 | * General Public License for more details. |
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| 19 | * |
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| 20 | * You should have received a copy of the GNU General Public License |
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| 21 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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| 22 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 23 | */ |
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| 24 | |
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| 25 | #ifndef _HAL_PPM_H_ |
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| 26 | #define _HAL_PPM_H_ |
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| 27 | |
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| 28 | #include <hal_kernel_types.h> |
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| 29 | #include <boot_info.h> |
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| 30 | |
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| 31 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 32 | // Generic Physical Page Manager API (implementation in hal_ppm.c) |
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| 33 | // |
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| 34 | // Any arch-specific implementation must implement this API. |
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| 35 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 36 | |
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| 37 | /**** Forward declarations ****/ |
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| 38 | |
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| 39 | struct page_s; |
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| 40 | |
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| 41 | |
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| 42 | /**************************************************************************************** |
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| 43 | * This function initializes the Physical Memory Manager in a given cluster. |
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| 44 | * It allocates physical memory to store the physical page descriptors |
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| 45 | * array (ppm_tbl), and initializes it using the <pages_nr> field in boot_info. |
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| 46 | * As the physical memory allocator is not available yet, this physical memory is |
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| 47 | * allocated on top of the kernel code, using the <pages_offset> field in boot_info. |
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| 48 | * The pages containing the kernel code, and the pages marked as <reserved> by the |
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| 49 | * boot-loader in the boot_info structure are removed from the free-lists. |
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| 50 | **************************************************************************************** |
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| 51 | * @ info : pointer on the boot_info structure. |
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| 52 | * @ return 0 if success / return ENOMEM if failure. |
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| 53 | ***************************************************************************************/ |
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| 54 | error_t hal_ppm_init( boot_info_t * info ); |
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| 55 | |
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| 56 | #endif /* HAL_PPM_H_ */ |
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