1 | /* |
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2 | * hal_ppm.c - Generic Physical Page Manager API implementation for x86 |
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3 | * |
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4 | * Copyright (c) 2017 Maxime Villard |
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5 | * |
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6 | * This file is part of ALMOS-MKH. |
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7 | * |
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8 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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9 | * under the terms of the GNU General Public License as published by |
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10 | * the Free Software Foundation; version 2.0 of the License. |
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11 | * |
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12 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 | * General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with ALMOS-MKH.; if not, write to the Free Software Foundation, |
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19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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20 | */ |
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21 | |
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22 | #include <kernel_config.h> |
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23 | #include <hal_types.h> |
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24 | #include <hal_ppm.h> |
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25 | #include <hal_special.h> |
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26 | #include <printk.h> |
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27 | #include <spinlock.h> |
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28 | #include <process.h> |
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29 | #include <ppm.h> |
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30 | #include <thread.h> |
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31 | #include <cluster.h> |
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32 | #include <page.h> |
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33 | |
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34 | #include <hal_internal.h> |
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35 | |
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36 | error_t hal_ppm_init(boot_info_t *info) |
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37 | { |
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38 | size_t i; |
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39 | |
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40 | // get relevant info from boot_info structure |
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41 | uint32_t pages_nr = info->pages_nr; |
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42 | uint32_t pages_tbl_offset = info->pages_offset; |
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43 | uint32_t rsvd_nr = info->rsvd_nr; |
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44 | |
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45 | // get pointer on local Physical Page Manager |
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46 | ppm_t * ppm = &LOCAL_CLUSTER->ppm; |
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47 | |
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48 | // initialize lock protecting the free_pages[] lists |
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49 | spinlock_init( &ppm->free_lock ); |
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50 | |
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51 | // initialize lock protecting the dirty_pages list |
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52 | spinlock_init( &ppm->dirty_lock ); |
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53 | |
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54 | // initialize all free_pages[] lists as empty |
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55 | for( i = 0 ; i < CONFIG_PPM_MAX_ORDER ; i++ ) |
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56 | { |
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57 | list_root_init( &ppm->free_pages_root[i] ); |
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58 | ppm->free_pages_nr[i] = 0; |
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59 | } |
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60 | |
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61 | // TODO |
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62 | |
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63 | x86_panic((char *)__func__); |
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64 | return 0; |
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65 | } |
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66 | |
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