[1] | 1 | /* |
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[606] | 2 | * mapper.c - Kernel cache for FS files or directories implementation. |
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[1] | 3 | * |
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| 4 | * Authors Mohamed Lamine Karaoui (2015) |
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[623] | 5 | * Alain Greiner (2016,2017,2018,2019) |
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[1] | 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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[14] | 25 | #include <kernel_config.h> |
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[457] | 26 | #include <hal_kernel_types.h> |
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[1] | 27 | #include <hal_special.h> |
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[23] | 28 | #include <hal_uspace.h> |
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[656] | 29 | #include <hal_vmm.h> |
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[1] | 30 | #include <grdxt.h> |
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[614] | 31 | #include <string.h> |
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[1] | 32 | #include <rwlock.h> |
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| 33 | #include <printk.h> |
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[279] | 34 | #include <memcpy.h> |
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[1] | 35 | #include <thread.h> |
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| 36 | #include <core.h> |
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| 37 | #include <process.h> |
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| 38 | #include <kmem.h> |
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| 39 | #include <kcm.h> |
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[567] | 40 | #include <ppm.h> |
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[1] | 41 | #include <page.h> |
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| 42 | #include <cluster.h> |
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| 43 | #include <vfs.h> |
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| 44 | #include <mapper.h> |
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[614] | 45 | #include <dev_ioc.h> |
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[1] | 46 | |
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[567] | 47 | |
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[246] | 48 | ////////////////////////////////////////////// |
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| 49 | mapper_t * mapper_create( vfs_fs_type_t type ) |
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[1] | 50 | { |
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| 51 | mapper_t * mapper; |
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| 52 | kmem_req_t req; |
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| 53 | error_t error; |
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| 54 | |
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[635] | 55 | // allocate memory for mapper descriptor |
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| 56 | req.type = KMEM_KCM; |
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| 57 | req.order = bits_log2( sizeof(mapper_t) ); |
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[1] | 58 | req.flags = AF_KERNEL | AF_ZERO; |
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[635] | 59 | mapper = kmem_alloc( &req ); |
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[1] | 60 | |
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| 61 | if( mapper == NULL ) |
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| 62 | { |
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| 63 | printk("\n[ERROR] in %s : no memory for mapper descriptor\n", __FUNCTION__ ); |
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| 64 | return NULL; |
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| 65 | } |
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| 66 | |
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| 67 | // initialize refcount & inode |
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[183] | 68 | mapper->refcount = 0; |
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[1] | 69 | mapper->inode = NULL; |
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| 70 | |
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| 71 | // initialize radix tree |
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[606] | 72 | error = grdxt_init( &mapper->rt, |
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| 73 | CONFIG_MAPPER_GRDXT_W1, |
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| 74 | CONFIG_MAPPER_GRDXT_W2, |
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| 75 | CONFIG_MAPPER_GRDXT_W3 ); |
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[1] | 76 | if( error ) |
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| 77 | { |
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| 78 | printk("\n[ERROR] in %s : cannot initialize radix tree\n", __FUNCTION__ ); |
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[635] | 79 | req.type = KMEM_KCM; |
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[1] | 80 | req.ptr = mapper; |
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| 81 | kmem_free( &req ); |
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| 82 | return NULL; |
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| 83 | } |
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| 84 | |
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[246] | 85 | // initialize mapper type |
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| 86 | mapper->type = type; |
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| 87 | |
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[1] | 88 | // initialize mapper lock |
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[606] | 89 | remote_rwlock_init( XPTR( local_cxy , &mapper->lock ) , LOCK_MAPPER_STATE ); |
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[1] | 90 | |
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| 91 | // initialize waiting threads xlist (empty) |
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[183] | 92 | xlist_root_init( XPTR( local_cxy , &mapper->wait_root ) ); |
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[1] | 93 | |
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| 94 | // initialize vsegs xlist (empty) |
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[183] | 95 | xlist_root_init( XPTR( local_cxy , &mapper->vsegs_root ) ); |
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[1] | 96 | |
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| 97 | return mapper; |
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| 98 | |
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[204] | 99 | } // end mapper_create() |
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| 100 | |
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[606] | 101 | //////////////////////////////////////// |
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| 102 | void mapper_destroy( mapper_t * mapper ) |
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[1] | 103 | { |
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| 104 | page_t * page; |
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| 105 | uint32_t found_index = 0; |
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| 106 | uint32_t start_index = 0; |
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| 107 | kmem_req_t req; |
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| 108 | |
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[606] | 109 | // scan radix tree |
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[1] | 110 | do |
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| 111 | { |
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| 112 | // get page from radix tree |
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[606] | 113 | page = (page_t *)grdxt_get_first( &mapper->rt , start_index , &found_index ); |
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[1] | 114 | |
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[606] | 115 | // release registered pages to PPM |
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[18] | 116 | if( page != NULL ) |
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[1] | 117 | { |
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| 118 | // remove page from mapper and release to PPM |
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[635] | 119 | mapper_remote_release_page( XPTR( local_cxy , mapper ) , page ); |
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[1] | 120 | |
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| 121 | // update start_key value for next page |
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| 122 | start_index = found_index; |
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| 123 | } |
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| 124 | } |
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| 125 | while( page != NULL ); |
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| 126 | |
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[606] | 127 | // release the memory allocated to radix tree itself |
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| 128 | grdxt_destroy( &mapper->rt ); |
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[1] | 129 | |
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| 130 | // release memory for mapper descriptor |
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[635] | 131 | req.type = KMEM_KCM; |
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[1] | 132 | req.ptr = mapper; |
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| 133 | kmem_free( &req ); |
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| 134 | |
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[204] | 135 | } // end mapper_destroy() |
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| 136 | |
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[635] | 137 | //////////////////////////////////////////////////////// |
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| 138 | error_t mapper_remote_handle_miss( xptr_t mapper_xp, |
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| 139 | uint32_t page_id, |
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| 140 | xptr_t * page_xp_ptr ) |
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| 141 | { |
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| 142 | error_t error; |
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| 143 | |
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[656] | 144 | uint32_t inode_size; |
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| 145 | uint32_t inode_type; |
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| 146 | |
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[635] | 147 | thread_t * this = CURRENT_THREAD; |
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| 148 | |
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| 149 | // get target mapper cluster and local pointer |
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[656] | 150 | cxy_t mapper_cxy = GET_CXY( mapper_xp ); |
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| 151 | mapper_t * mapper_ptr = GET_PTR( mapper_xp ); |
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[635] | 152 | |
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[656] | 153 | // get inode pointer |
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| 154 | vfs_inode_t * inode = hal_remote_lpt( XPTR( mapper_cxy , &mapper_ptr->inode ) ); |
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| 155 | |
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| 156 | // get inode size and type if relevant |
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| 157 | if( inode != NULL ) |
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| 158 | { |
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| 159 | inode_size = hal_remote_l32( XPTR( mapper_cxy , &inode->size ) ); |
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| 160 | inode_type = hal_remote_l32( XPTR( mapper_cxy , &inode->type ) ); |
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| 161 | } |
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| 162 | else |
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| 163 | { |
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| 164 | inode_size = 0; |
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| 165 | inode_type = 0; |
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| 166 | } |
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| 167 | |
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[635] | 168 | #if DEBUG_MAPPER_HANDLE_MISS |
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| 169 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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| 170 | char name[CONFIG_VFS_MAX_NAME_LENGTH]; |
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| 171 | if( (DEBUG_MAPPER_HANDLE_MISS < cycle) && (inode != NULL) ) |
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| 172 | { |
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[656] | 173 | vfs_inode_get_name( XPTR( mapper_cxy , inode ) , name ); |
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| 174 | printk("\n[%s] thread[%x,%x] enter for page %d in <%s> / cxy %x / cycle %d\n", |
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[635] | 175 | __FUNCTION__, this->process->pid, this->trdid, page_id, name, mapper_cxy, cycle ); |
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| 176 | } |
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| 177 | if( (DEBUG_MAPPER_HANDLE_MISS < cycle) && (inode == NULL) ) |
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| 178 | { |
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[656] | 179 | printk("\n[%s] thread[%x,%x] enter for page %d in FAT / cxy %x / cycle %d\n", |
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[635] | 180 | __FUNCTION__, this->process->pid, this->trdid, page_id, mapper_cxy, cycle ); |
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| 181 | } |
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| 182 | #endif |
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| 183 | |
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[656] | 184 | #if( DEBUG_MAPPER_HANDLE_MISS & 2 ) |
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| 185 | if( DEBUG_MAPPER_HANDLE_MISS < cycle ) |
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| 186 | { |
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| 187 | if (inode != NULL) grdxt_remote_display( XPTR( mapper_cxy , &mapper_ptr->rt ) , name ); |
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| 188 | else grdxt_remote_display( XPTR( mapper_cxy , &mapper_ptr->rt ) , "FAT" ); |
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| 189 | } |
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| 190 | #endif |
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| 191 | |
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[635] | 192 | // allocate one 4 Kbytes page from the remote mapper cluster |
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[656] | 193 | xptr_t page_xp = ppm_remote_alloc_pages( mapper_cxy , 0 ); |
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| 194 | page_t * page_ptr = GET_PTR( page_xp ); |
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[635] | 195 | |
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[656] | 196 | if( page_xp == XPTR_NULL ) |
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[635] | 197 | { |
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| 198 | printk("\n[ERROR] in %s : thread [%x,%x] cannot allocate page in cluster %x\n", |
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| 199 | __FUNCTION__ , this->process->pid, this->trdid , mapper_cxy ); |
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| 200 | return -1; |
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| 201 | } |
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| 202 | |
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| 203 | // initialize the page descriptor |
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| 204 | page_remote_init( page_xp ); |
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| 205 | |
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[656] | 206 | // initialize specific page descriptor fields |
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[635] | 207 | hal_remote_s32( XPTR( mapper_cxy , &page_ptr->refcount ) , 1 ); |
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| 208 | hal_remote_s32( XPTR( mapper_cxy , &page_ptr->index ) , page_id ); |
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| 209 | hal_remote_spt( XPTR( mapper_cxy , &page_ptr->mapper ) , mapper_ptr ); |
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| 210 | hal_remote_s32( XPTR( mapper_cxy , &page_ptr->flags ) , PG_INIT ); |
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| 211 | |
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| 212 | // insert page in mapper radix tree |
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| 213 | error = grdxt_remote_insert( XPTR( mapper_cxy , &mapper_ptr->rt), |
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| 214 | page_id, |
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| 215 | page_ptr ); |
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| 216 | |
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| 217 | if( error ) |
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| 218 | { |
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| 219 | printk("\n[ERROR] in %s : thread[%x,%x] cannot insert page in mapper\n", |
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| 220 | __FUNCTION__ , this->process->pid, this->trdid ); |
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| 221 | ppm_remote_free_pages( mapper_cxy , page_ptr ); |
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| 222 | return -1; |
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| 223 | } |
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| 224 | |
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[656] | 225 | // launch I/O operation to load page from IOC device when required: |
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| 226 | // - it is the FAT mapper |
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| 227 | // - it is a directory mapper |
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| 228 | // - it is a file mapper, and it exist data on IOC device for this page |
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| 229 | if( (inode == NULL) || (inode_type == INODE_TYPE_DIR) || (inode_size > (page_id << 10) ) ) |
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| 230 | { |
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| 231 | error = vfs_fs_move_page( page_xp , IOC_SYNC_READ ); |
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[635] | 232 | |
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[656] | 233 | if( error ) |
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| 234 | { |
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| 235 | printk("\n[ERROR] in %s : thread[%x,%x] cannot load page from device\n", |
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| 236 | __FUNCTION__ , this->process->pid, this->trdid ); |
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| 237 | mapper_remote_release_page( mapper_xp , page_ptr ); |
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| 238 | return -1; |
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| 239 | } |
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[635] | 240 | } |
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| 241 | |
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| 242 | // return extended pointer on allocated page |
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| 243 | *page_xp_ptr = page_xp; |
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| 244 | |
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| 245 | #if DEBUG_MAPPER_HANDLE_MISS |
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[656] | 246 | ppn_t ppn = ppm_page2ppn( page_xp ); |
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[635] | 247 | if( (DEBUG_MAPPER_HANDLE_MISS < cycle) && (inode != NULL) ) |
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| 248 | { |
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[656] | 249 | printk("\n[%s] thread[%x,%x] exit for page %d in <%s> / page %x / ppn %x\n", |
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| 250 | __FUNCTION__, this->process->pid, this->trdid, page_id, name, page_ptr, ppn ); |
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[635] | 251 | } |
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| 252 | if( (DEBUG_MAPPER_HANDLE_MISS < cycle) && (inode == NULL) ) |
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| 253 | { |
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[656] | 254 | printk("\n[%s] thread[%x,%x] exit for page %d in FAT / page %x / ppn %x\n", |
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| 255 | __FUNCTION__, this->process->pid, this->trdid, page_id, page_ptr, ppn ); |
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[635] | 256 | } |
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| 257 | #endif |
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| 258 | |
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[656] | 259 | #if( DEBUG_MAPPER_HANDLE_MISS & 2 ) |
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| 260 | if( DEBUG_MAPPER_HANDLE_MISS < cycle ) |
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| 261 | { |
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| 262 | if (inode != NULL) grdxt_remote_display( XPTR( mapper_cxy , &mapper_ptr->rt ) , name ); |
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| 263 | else grdxt_remote_display( XPTR( mapper_cxy , &mapper_ptr->rt ) , "FAT" ); |
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| 264 | } |
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| 265 | #endif |
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| 266 | |
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[635] | 267 | return 0; |
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| 268 | |
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| 269 | } // end mapper_remote_handle_miss() |
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| 270 | |
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[606] | 271 | //////////////////////////////////////////////////// |
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| 272 | xptr_t mapper_remote_get_page( xptr_t mapper_xp, |
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| 273 | uint32_t page_id ) |
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[1] | 274 | { |
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[183] | 275 | error_t error; |
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[1] | 276 | |
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[606] | 277 | thread_t * this = CURRENT_THREAD; |
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| 278 | |
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| 279 | // get mapper cluster and local pointer |
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[656] | 280 | mapper_t * mapper_ptr = GET_PTR( mapper_xp ); |
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| 281 | cxy_t mapper_cxy = GET_CXY( mapper_xp ); |
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[606] | 282 | |
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[438] | 283 | #if DEBUG_MAPPER_GET_PAGE |
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[625] | 284 | vfs_inode_t * inode = hal_remote_lpt( XPTR( mapper_cxy , &mapper_ptr->inode ) ); |
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| 285 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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[606] | 286 | char name[CONFIG_VFS_MAX_NAME_LENGTH]; |
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[625] | 287 | if( (DEBUG_MAPPER_GET_PAGE < cycle) && (inode == NULL) ) // FAT mapper |
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| 288 | { |
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| 289 | printk("\n[%s] thread[%x,%x] enter for page %d of FAT mapper / cycle %d\n", |
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| 290 | __FUNCTION__, this->process->pid, this->trdid, page_id, cycle ); |
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| 291 | } |
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| 292 | if( (DEBUG_MAPPER_GET_PAGE < cycle) && (inode != NULL) ) // file mapper |
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| 293 | { |
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| 294 | vfs_inode_get_name( XPTR( mapper_cxy , inode ) , name ); |
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| 295 | printk("\n[%s] thread[%x,%x] enter for page %d of <%s> mapper / cycle %d\n", |
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| 296 | __FUNCTION__, this->process->pid, this->trdid, page_id, name, cycle ); |
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| 297 | } |
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[435] | 298 | #endif |
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[204] | 299 | |
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[656] | 300 | #if( DEBUG_MAPPER_GET_PAGE & 2 ) |
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| 301 | if( DEBUG_MAPPER_GET_PAGE < cycle ) |
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| 302 | ppm_remote_display( local_cxy ); |
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| 303 | #endif |
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| 304 | |
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[581] | 305 | // check thread can yield |
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| 306 | thread_assert_can_yield( this , __FUNCTION__ ); |
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| 307 | |
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[606] | 308 | // build extended pointer on mapper lock and mapper rt |
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[656] | 309 | xptr_t lock_xp = XPTR( mapper_cxy , &mapper_ptr->lock ); |
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| 310 | xptr_t rt_xp = XPTR( mapper_cxy , &mapper_ptr->rt ); |
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[606] | 311 | |
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[1] | 312 | // take mapper lock in READ_MODE |
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[606] | 313 | remote_rwlock_rd_acquire( lock_xp ); |
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[1] | 314 | |
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| 315 | // search page in radix tree |
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[656] | 316 | xptr_t page_xp = grdxt_remote_lookup( rt_xp , page_id ); |
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[1] | 317 | |
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[606] | 318 | // test mapper miss |
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[635] | 319 | if( page_xp == XPTR_NULL ) // miss => handle it |
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[1] | 320 | { |
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| 321 | // release the lock in READ_MODE and take it in WRITE_MODE |
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[606] | 322 | remote_rwlock_rd_release( lock_xp ); |
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| 323 | remote_rwlock_wr_acquire( lock_xp ); |
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[1] | 324 | |
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[606] | 325 | // second test on missing page because the page status can be modified |
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[1] | 326 | // by another thread, when passing from READ_MODE to WRITE_MODE. |
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| 327 | // from this point there is no concurrent accesses to mapper. |
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[606] | 328 | page_xp = grdxt_remote_lookup( rt_xp , page_id ); |
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[1] | 329 | |
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[606] | 330 | if ( page_xp == XPTR_NULL ) // miss confirmed => handle it |
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[1] | 331 | { |
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[635] | 332 | error = mapper_remote_handle_miss( mapper_xp, |
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| 333 | page_id, |
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| 334 | &page_xp ); |
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| 335 | if( error ) |
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[610] | 336 | { |
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[606] | 337 | printk("\n[ERROR] in %s : thread[%x,%x] cannot handle mapper miss\n", |
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| 338 | __FUNCTION__ , this->process->pid, this->trdid ); |
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| 339 | remote_rwlock_wr_release( lock_xp ); |
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| 340 | return XPTR_NULL; |
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[1] | 341 | } |
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| 342 | } |
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[635] | 343 | |
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| 344 | #if (DEBUG_MAPPER_GET_PAGE & 1) |
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[656] | 345 | if( (DEBUG_MAPPER_GET_PAGE < cycle) && (inode != NULL) ) |
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| 346 | { |
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| 347 | printk("\n[%s] thread[%x,%x] introduced missing page in <%s> mapper / ppn %x\n", |
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| 348 | __FUNCTION__, this->process->pid, this->trdid, name, ppm_page2ppn(page_xp) ); |
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| 349 | } |
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| 350 | if( (DEBUG_MAPPER_GET_PAGE < cycle) && (inode == NULL) ) |
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| 351 | { |
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| 352 | printk("\n[%s] thread[%x,%x] introduced missing page in FAT mapper / ppn %x\n", |
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| 353 | __FUNCTION__, this->process->pid, this->trdid, ppm_page2ppn(page_xp) ); |
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| 354 | } |
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[635] | 355 | #endif |
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[606] | 356 | |
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| 357 | // release mapper lock from WRITE_MODE |
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| 358 | remote_rwlock_wr_release( lock_xp ); |
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[1] | 359 | } |
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[606] | 360 | else // hit |
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[1] | 361 | { |
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[606] | 362 | // release mapper lock from READ_MODE |
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| 363 | remote_rwlock_rd_release( lock_xp ); |
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[1] | 364 | } |
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| 365 | |
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[438] | 366 | #if DEBUG_MAPPER_GET_PAGE |
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[435] | 367 | cycle = (uint32_t)hal_get_cycles(); |
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[625] | 368 | if( (DEBUG_MAPPER_GET_PAGE < cycle) && (inode != NULL) ) |
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| 369 | { |
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[656] | 370 | printk("\n[%s] thread[%x,%x] exit for page %d of <%s> mapper / ppn %x\n", |
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| 371 | __FUNCTION__, this->process->pid, this->trdid, page_id, name, ppm_page2ppn(page_xp) ); |
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[625] | 372 | } |
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| 373 | if( (DEBUG_MAPPER_GET_PAGE < cycle) && (inode == NULL) ) |
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| 374 | { |
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[656] | 375 | printk("\n[%s] thread[%x,%x] exit for page %d of FAT mapper / ppn %x\n", |
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| 376 | __FUNCTION__, this->process->pid, this->trdid, page_id, ppm_page2ppn(page_xp) ); |
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[625] | 377 | } |
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[435] | 378 | #endif |
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[204] | 379 | |
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[656] | 380 | #if( DEBUG_MAPPER_GET_PAGE & 2) |
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| 381 | if( DEBUG_MAPPER_GET_PAGE < cycle ) |
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| 382 | ppm_remote_display( local_cxy ); |
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| 383 | #endif |
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| 384 | |
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[606] | 385 | return page_xp; |
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[204] | 386 | |
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[606] | 387 | } // end mapper_remote_get_page() |
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[204] | 388 | |
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[635] | 389 | //////////////////////////////////////////////////// |
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| 390 | void mapper_remote_release_page( xptr_t mapper_xp, |
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| 391 | page_t * page ) |
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[1] | 392 | { |
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[635] | 393 | // get mapper cluster an local pointer |
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| 394 | cxy_t mapper_cxy = GET_CXY( mapper_xp ); |
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| 395 | mapper_t * mapper_ptr = GET_PTR( mapper_xp ); |
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[1] | 396 | |
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[606] | 397 | // build extended pointer on mapper lock |
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[635] | 398 | xptr_t lock_xp = XPTR( mapper_cxy , &mapper_ptr->lock ); |
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[606] | 399 | |
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[1] | 400 | // take mapper lock in WRITE_MODE |
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[635] | 401 | remote_rwlock_wr_acquire( lock_xp ); |
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[1] | 402 | |
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| 403 | // remove physical page from radix tree |
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[635] | 404 | grdxt_remote_remove( XPTR( mapper_cxy , &mapper_ptr->rt ) , page->index ); |
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[1] | 405 | |
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| 406 | // release mapper lock from WRITE_MODE |
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[635] | 407 | remote_rwlock_wr_release( lock_xp ); |
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[1] | 408 | |
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| 409 | // release page to PPM |
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[635] | 410 | ppm_remote_free_pages( mapper_cxy , page ); |
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| 411 | |
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[204] | 412 | } // end mapper_release_page() |
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| 413 | |
---|
[610] | 414 | /////////////////////////////////////////////// |
---|
| 415 | error_t mapper_move_user( xptr_t mapper_xp, |
---|
[313] | 416 | bool_t to_buffer, |
---|
| 417 | uint32_t file_offset, |
---|
| 418 | void * buffer, |
---|
| 419 | uint32_t size ) |
---|
[1] | 420 | { |
---|
[23] | 421 | uint32_t page_offset; // first byte to move to/from a mapper page |
---|
[628] | 422 | uint32_t page_bytes; // number of bytes to move to/from a mapper page |
---|
[606] | 423 | uint32_t page_id; // current mapper page index |
---|
[23] | 424 | uint32_t done; // number of moved bytes |
---|
[606] | 425 | xptr_t page_xp; // extended pointer on current mapper page descriptor |
---|
[330] | 426 | |
---|
[438] | 427 | #if DEBUG_MAPPER_MOVE_USER |
---|
[626] | 428 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
| 429 | thread_t * this = CURRENT_THREAD; |
---|
| 430 | cxy_t mapper_cxy = GET_CXY( mapper_xp ); |
---|
| 431 | mapper_t * mapper_ptr = GET_PTR( mapper_xp ); |
---|
| 432 | vfs_inode_t * inode_ptr = hal_remote_lpt( XPTR( mapper_cxy , &mapper_ptr->inode ) ); |
---|
| 433 | xptr_t inode_xp = XPTR( mapper_cxy , inode_ptr ); |
---|
| 434 | char name[CONFIG_VFS_MAX_NAME_LENGTH]; |
---|
| 435 | vfs_inode_get_name( inode_xp , name ); |
---|
[438] | 436 | if( DEBUG_MAPPER_MOVE_USER < cycle ) |
---|
[626] | 437 | { |
---|
| 438 | if( to_buffer ) |
---|
| 439 | printk("\n[%s] thread[%x,%x] : mapper(%s) -> buffer(%x) / bytes %d / cycle %d\n", |
---|
| 440 | __FUNCTION__, this->process->pid, this->trdid, name, buffer, size, cycle ); |
---|
| 441 | else |
---|
| 442 | printk("\n[%s] thread[%x,%x] : buffer(%x) -> mapper(%s) / bytes %d / cycle %d\n", |
---|
| 443 | __FUNCTION__, this->process->pid, this->trdid, buffer, name, size, cycle ); |
---|
| 444 | } |
---|
[435] | 445 | #endif |
---|
[1] | 446 | |
---|
[628] | 447 | // compute indexes of first and last bytes in file |
---|
[23] | 448 | uint32_t min_byte = file_offset; |
---|
[606] | 449 | uint32_t max_byte = file_offset + size - 1; |
---|
[1] | 450 | |
---|
[23] | 451 | // compute indexes of pages for first and last byte in mapper |
---|
| 452 | uint32_t first = min_byte >> CONFIG_PPM_PAGE_SHIFT; |
---|
| 453 | uint32_t last = max_byte >> CONFIG_PPM_PAGE_SHIFT; |
---|
[1] | 454 | |
---|
[606] | 455 | #if (DEBUG_MAPPER_MOVE_USER & 1) |
---|
| 456 | if( DEBUG_MAPPER_MOVE_USER < cycle ) |
---|
[626] | 457 | printk("\n[%s] thread[%x,%x] : mapper(%x,%x) / first_page %d / last_page %d\n", |
---|
| 458 | __FUNCTION__, this->process->pid, this->trdid, mapper_cxy, mapper_ptr, first, last ); |
---|
[606] | 459 | #endif |
---|
| 460 | |
---|
[23] | 461 | done = 0; |
---|
[1] | 462 | |
---|
[23] | 463 | // loop on pages in mapper |
---|
[606] | 464 | for( page_id = first ; page_id <= last ; page_id++ ) |
---|
[1] | 465 | { |
---|
[183] | 466 | // compute page_offset |
---|
[606] | 467 | if( page_id == first ) page_offset = min_byte & CONFIG_PPM_PAGE_MASK; |
---|
| 468 | else page_offset = 0; |
---|
[1] | 469 | |
---|
[313] | 470 | // compute number of bytes in page |
---|
[628] | 471 | if ( first == last ) page_bytes = size; |
---|
| 472 | else if ( page_id == first ) page_bytes = CONFIG_PPM_PAGE_SIZE - page_offset; |
---|
| 473 | else if ( page_id == last ) page_bytes = (max_byte & CONFIG_PPM_PAGE_MASK) + 1; |
---|
| 474 | else page_bytes = CONFIG_PPM_PAGE_SIZE; |
---|
[1] | 475 | |
---|
[438] | 476 | #if (DEBUG_MAPPER_MOVE_USER & 1) |
---|
| 477 | if( DEBUG_MAPPER_MOVE_USER < cycle ) |
---|
[626] | 478 | printk("\n[%s] thread[%x,%x] : page_id %d / page_offset %d / bytes %d\n", |
---|
[628] | 479 | __FUNCTION__, this->process->pid, this->trdid, page_id , page_offset , page_bytes ); |
---|
[435] | 480 | #endif |
---|
[265] | 481 | |
---|
[628] | 482 | // get extended pointer on page descriptor in mapper |
---|
[606] | 483 | page_xp = mapper_remote_get_page( mapper_xp , page_id ); |
---|
[1] | 484 | |
---|
[606] | 485 | if ( page_xp == XPTR_NULL ) return -1; |
---|
[1] | 486 | |
---|
[651] | 487 | // compute extended pointer on kernel mapper |
---|
[637] | 488 | xptr_t map_xp = ppm_page2base( page_xp ) + page_offset; |
---|
[626] | 489 | |
---|
[610] | 490 | #if (DEBUG_MAPPER_MOVE_USER & 1) |
---|
| 491 | if( DEBUG_MAPPER_MOVE_USER < cycle ) |
---|
[626] | 492 | printk("\n[%s] thread[%x,%x] : get buffer(%x,%x) in mapper\n", |
---|
[651] | 493 | __FUNCTION__, this->process->pid, this->trdid, GET_CXY(map_xp), GET_PTR(map_xp) ); |
---|
[610] | 494 | #endif |
---|
[626] | 495 | // compute pointer in user buffer |
---|
[606] | 496 | uint8_t * buf_ptr = (uint8_t *)buffer + done; |
---|
[1] | 497 | |
---|
| 498 | // move fragment |
---|
[330] | 499 | if( to_buffer ) |
---|
[1] | 500 | { |
---|
[637] | 501 | hal_copy_to_uspace( buf_ptr , map_xp , page_bytes ); |
---|
[626] | 502 | |
---|
| 503 | #if DEBUG_MAPPER_MOVE_USER & 1 |
---|
| 504 | if( DEBUG_MAPPER_MOVE_USER < cycle ) |
---|
| 505 | printk("\n[%s] thread[%x,%x] moved %d bytes / mapper %s (%x,%x) -> user buffer(%x,%x)\n", |
---|
[628] | 506 | __FUNCTION__, this->process->pid, this->trdid, page_bytes, |
---|
[637] | 507 | name, GET_CXY(map_xp), GET_PTR(map_xp), local_cxy, buf_ptr ); |
---|
[626] | 508 | #endif |
---|
| 509 | |
---|
[1] | 510 | } |
---|
[330] | 511 | else |
---|
[1] | 512 | { |
---|
[606] | 513 | ppm_page_do_dirty( page_xp ); |
---|
[637] | 514 | hal_copy_from_uspace( map_xp , buf_ptr , page_bytes ); |
---|
[626] | 515 | |
---|
| 516 | #if DEBUG_MAPPER_MOVE_USER & 1 |
---|
| 517 | if( DEBUG_MAPPER_MOVE_USER < cycle ) |
---|
| 518 | printk("\n[%s] thread[%x,%x] moved %d bytes / user buffer(%x,%x) -> mapper %s (%x,%x)\n", |
---|
[628] | 519 | __FUNCTION__, this->process->pid, this->trdid, page_bytes, |
---|
[637] | 520 | local_cxy, buf_ptr, name, GET_CXY(map_xp), GET_PTR(map_xp) ); |
---|
[656] | 521 | mapper_display_page( mapper_xp , page_xp , 128 ); |
---|
[626] | 522 | #endif |
---|
| 523 | |
---|
[1] | 524 | } |
---|
| 525 | |
---|
[628] | 526 | done += page_bytes; |
---|
[1] | 527 | } |
---|
| 528 | |
---|
[438] | 529 | #if DEBUG_MAPPER_MOVE_USER |
---|
[626] | 530 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 531 | if( DEBUG_MAPPER_MOVE_USER < cycle ) |
---|
[626] | 532 | { |
---|
| 533 | if( to_buffer ) |
---|
| 534 | printk("\n[%s] thread[%x,%x] completed mapper(%s) -> buffer(%x) / cycle %d\n", |
---|
| 535 | __FUNCTION__, this->process->pid, this->trdid, name, buffer, cycle ); |
---|
| 536 | else |
---|
| 537 | printk("\n[%s] thread[%x,%x] completed buffer(%x) -> mapper(%s) / cycle %d\n", |
---|
| 538 | __FUNCTION__, this->process->pid, this->trdid, buffer, name, cycle ); |
---|
| 539 | } |
---|
[435] | 540 | #endif |
---|
[204] | 541 | |
---|
[1] | 542 | return 0; |
---|
| 543 | |
---|
[313] | 544 | } // end mapper_move_user() |
---|
[204] | 545 | |
---|
[313] | 546 | //////////////////////////////////////////////// |
---|
[606] | 547 | error_t mapper_move_kernel( xptr_t mapper_xp, |
---|
| 548 | bool_t to_buffer, |
---|
| 549 | uint32_t file_offset, |
---|
| 550 | xptr_t buffer_xp, |
---|
| 551 | uint32_t size ) |
---|
[313] | 552 | { |
---|
| 553 | uint32_t page_offset; // first byte to move to/from a mapper page |
---|
[628] | 554 | uint32_t page_bytes; // number of bytes to move to/from a mapper page |
---|
[606] | 555 | uint32_t page_id; // current mapper page index |
---|
[313] | 556 | uint32_t done; // number of moved bytes |
---|
[606] | 557 | xptr_t page_xp; // extended pointer on current mapper page descriptor |
---|
[313] | 558 | |
---|
| 559 | uint8_t * src_ptr; // source buffer local pointer |
---|
| 560 | cxy_t src_cxy; // source cluster |
---|
| 561 | uint8_t * dst_ptr; // destination buffer local pointer |
---|
| 562 | cxy_t dst_cxy; // destination cluster |
---|
[330] | 563 | |
---|
[406] | 564 | // get buffer cluster and local pointer |
---|
| 565 | cxy_t buffer_cxy = GET_CXY( buffer_xp ); |
---|
[606] | 566 | uint8_t * buffer_ptr = GET_PTR( buffer_xp ); |
---|
[313] | 567 | |
---|
[606] | 568 | // get mapper cluster |
---|
| 569 | cxy_t mapper_cxy = GET_CXY( mapper_xp ); |
---|
| 570 | |
---|
[438] | 571 | #if DEBUG_MAPPER_MOVE_KERNEL |
---|
[625] | 572 | char name[CONFIG_VFS_MAX_NAME_LENGTH]; |
---|
| 573 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
| 574 | thread_t * this = CURRENT_THREAD; |
---|
| 575 | mapper_t * mapper = GET_PTR( mapper_xp ); |
---|
| 576 | vfs_inode_t * inode = hal_remote_lpt( XPTR( mapper_cxy , &mapper->inode ) ); |
---|
| 577 | vfs_inode_get_name( XPTR( mapper_cxy , inode ) , name ); |
---|
[438] | 578 | if( DEBUG_MAPPER_MOVE_KERNEL < cycle ) |
---|
[625] | 579 | printk("\n[%s] thread[%x,%x] enter / %d bytes / offset %d / mapper <%s> / cycle %d\n", |
---|
| 580 | __FUNCTION__, this->process->pid, this->trdid, size, file_offset, name, cycle ); |
---|
[435] | 581 | #endif |
---|
[406] | 582 | |
---|
[313] | 583 | // compute offsets of first and last bytes in file |
---|
| 584 | uint32_t min_byte = file_offset; |
---|
| 585 | uint32_t max_byte = file_offset + size -1; |
---|
| 586 | |
---|
| 587 | // compute indexes for first and last pages in mapper |
---|
| 588 | uint32_t first = min_byte >> CONFIG_PPM_PAGE_SHIFT; |
---|
| 589 | uint32_t last = max_byte >> CONFIG_PPM_PAGE_SHIFT; |
---|
| 590 | |
---|
| 591 | // compute source and destination clusters |
---|
| 592 | if( to_buffer ) |
---|
| 593 | { |
---|
| 594 | dst_cxy = buffer_cxy; |
---|
[606] | 595 | src_cxy = mapper_cxy; |
---|
[313] | 596 | } |
---|
| 597 | else |
---|
| 598 | { |
---|
| 599 | src_cxy = buffer_cxy; |
---|
[606] | 600 | dst_cxy = mapper_cxy; |
---|
[313] | 601 | } |
---|
| 602 | |
---|
| 603 | done = 0; |
---|
| 604 | |
---|
| 605 | // loop on pages in mapper |
---|
[606] | 606 | for( page_id = first ; page_id <= last ; page_id++ ) |
---|
[313] | 607 | { |
---|
| 608 | // compute page_offset |
---|
[606] | 609 | if( page_id == first ) page_offset = min_byte & CONFIG_PPM_PAGE_MASK; |
---|
| 610 | else page_offset = 0; |
---|
[313] | 611 | |
---|
| 612 | // compute number of bytes to move in page |
---|
[628] | 613 | if ( first == last ) page_bytes = size; |
---|
| 614 | else if ( page_id == first ) page_bytes = CONFIG_PPM_PAGE_SIZE - page_offset; |
---|
| 615 | else if ( page_id == last ) page_bytes = (max_byte & CONFIG_PPM_PAGE_MASK) + 1; |
---|
| 616 | else page_bytes = CONFIG_PPM_PAGE_SIZE; |
---|
[313] | 617 | |
---|
[606] | 618 | // get extended pointer on page descriptor |
---|
| 619 | page_xp = mapper_remote_get_page( mapper_xp , page_id ); |
---|
[313] | 620 | |
---|
[606] | 621 | if ( page_xp == XPTR_NULL ) return -1; |
---|
[313] | 622 | |
---|
[315] | 623 | // get page base address |
---|
[606] | 624 | xptr_t base_xp = ppm_page2base( page_xp ); |
---|
[367] | 625 | uint8_t * base_ptr = (uint8_t *)GET_PTR( base_xp ); |
---|
[330] | 626 | |
---|
[313] | 627 | // compute source and destination pointers |
---|
| 628 | if( to_buffer ) |
---|
| 629 | { |
---|
[315] | 630 | dst_ptr = buffer_ptr + done; |
---|
[367] | 631 | src_ptr = base_ptr + page_offset; |
---|
[313] | 632 | } |
---|
| 633 | else |
---|
| 634 | { |
---|
[315] | 635 | src_ptr = buffer_ptr + done; |
---|
[367] | 636 | dst_ptr = base_ptr + page_offset; |
---|
[313] | 637 | |
---|
[606] | 638 | ppm_page_do_dirty( page_xp ); |
---|
[313] | 639 | } |
---|
| 640 | |
---|
[610] | 641 | #if (DEBUG_MAPPER_MOVE_KERNEL & 1) |
---|
| 642 | if( DEBUG_MAPPER_MOVE_KERNEL < cycle ) |
---|
[625] | 643 | { |
---|
| 644 | if( to_buffer ) |
---|
[656] | 645 | printk("\n[%s] mapper <%s> page %d => buffer (%x,%x) / %d bytes\n", |
---|
[628] | 646 | __FUNCTION__, name, page_id, dst_cxy, dst_ptr, page_bytes ); |
---|
[625] | 647 | else |
---|
[656] | 648 | printk("\n[%s] buffer (%x,%x) => mapper <%s> page %d / %d bytes\n", |
---|
[628] | 649 | __FUNCTION__, src_cxy, src_ptr, name, page_id, page_bytes ); |
---|
[625] | 650 | } |
---|
[610] | 651 | #endif |
---|
| 652 | |
---|
[313] | 653 | // move fragment |
---|
[628] | 654 | hal_remote_memcpy( XPTR( dst_cxy , dst_ptr ), XPTR( src_cxy , src_ptr ), page_bytes ); |
---|
[330] | 655 | |
---|
[628] | 656 | done += page_bytes; |
---|
[313] | 657 | } |
---|
| 658 | |
---|
[438] | 659 | #if DEBUG_MAPPER_MOVE_KERNEL |
---|
[625] | 660 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 661 | if( DEBUG_MAPPER_MOVE_KERNEL < cycle ) |
---|
[656] | 662 | printk("\n[%s] thread[%x,%x] exit / mapper <%s> / buffer (%x,%x) / cycle %d\n", |
---|
| 663 | __FUNCTION__, this->process->pid, this->trdid, name, buffer_cxy, buffer_ptr, cycle ); |
---|
[435] | 664 | #endif |
---|
[313] | 665 | |
---|
| 666 | return 0; |
---|
| 667 | |
---|
[406] | 668 | } // end mapper_move_kernel() |
---|
[313] | 669 | |
---|
[606] | 670 | /////////////////////////////////////////////////// |
---|
| 671 | error_t mapper_remote_get_32( xptr_t mapper_xp, |
---|
[628] | 672 | uint32_t page_id, |
---|
[606] | 673 | uint32_t word_id, |
---|
[628] | 674 | uint32_t * value ) |
---|
[606] | 675 | { |
---|
| 676 | xptr_t page_xp; // extended pointer on searched page descriptor |
---|
| 677 | xptr_t base_xp; // extended pointer on searched page base |
---|
| 678 | |
---|
| 679 | // get page containing the searched word |
---|
| 680 | page_xp = mapper_remote_get_page( mapper_xp , page_id ); |
---|
| 681 | |
---|
| 682 | if( page_xp == XPTR_NULL ) return -1; |
---|
| 683 | |
---|
| 684 | // get page base |
---|
| 685 | base_xp = ppm_page2base( page_xp ); |
---|
| 686 | |
---|
| 687 | // get the value from mapper |
---|
[628] | 688 | *value = hal_remote_l32( base_xp + (word_id<<2) ); |
---|
[606] | 689 | |
---|
| 690 | return 0; |
---|
| 691 | |
---|
| 692 | } // end mapper_remote_get_32() |
---|
| 693 | |
---|
| 694 | /////////////////////////////////////////////////// |
---|
| 695 | error_t mapper_remote_set_32( xptr_t mapper_xp, |
---|
[628] | 696 | uint32_t page_id, |
---|
[606] | 697 | uint32_t word_id, |
---|
| 698 | uint32_t value ) |
---|
| 699 | { |
---|
| 700 | xptr_t page_xp; // extended pointer on searched page descriptor |
---|
| 701 | xptr_t base_xp; // extended pointer on searched page base |
---|
| 702 | |
---|
| 703 | // get page containing the searched word |
---|
| 704 | page_xp = mapper_remote_get_page( mapper_xp , page_id ); |
---|
| 705 | |
---|
| 706 | if( page_xp == XPTR_NULL ) return -1; |
---|
| 707 | |
---|
| 708 | // get page base |
---|
| 709 | base_xp = ppm_page2base( page_xp ); |
---|
| 710 | |
---|
| 711 | // set value to mapper |
---|
[628] | 712 | hal_remote_s32( (base_xp + (word_id << 2)) , value ); |
---|
[606] | 713 | |
---|
[628] | 714 | // set the dirty flag in page descriptor |
---|
[606] | 715 | ppm_page_do_dirty( page_xp ); |
---|
| 716 | |
---|
| 717 | return 0; |
---|
| 718 | |
---|
| 719 | } // end mapper_remote_set_32() |
---|
| 720 | |
---|
[623] | 721 | ///////////////////////////////////////// |
---|
| 722 | error_t mapper_sync( mapper_t * mapper ) |
---|
| 723 | { |
---|
| 724 | page_t * page; // local pointer on current page descriptor |
---|
| 725 | xptr_t page_xp; // extended pointer on current page descriptor |
---|
| 726 | grdxt_t * rt; // pointer on radix_tree descriptor |
---|
| 727 | uint32_t start_key; // start page index in mapper |
---|
| 728 | uint32_t found_key; // current page index in mapper |
---|
| 729 | error_t error; |
---|
| 730 | |
---|
| 731 | #if DEBUG_MAPPER_SYNC |
---|
| 732 | thread_t * this = CURRENT_THREAD; |
---|
| 733 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
| 734 | char name[CONFIG_VFS_MAX_NAME_LENGTH]; |
---|
| 735 | vfs_inode_get_name( XPTR( local_cxy , mapper->inode ) , name ); |
---|
| 736 | #endif |
---|
| 737 | |
---|
| 738 | // get pointer on radix tree |
---|
[625] | 739 | rt = &mapper->rt; |
---|
[623] | 740 | |
---|
| 741 | // initialise loop variable |
---|
| 742 | start_key = 0; |
---|
| 743 | |
---|
| 744 | // scan radix-tree until last page found |
---|
| 745 | while( 1 ) |
---|
| 746 | { |
---|
| 747 | // get page descriptor from radix tree |
---|
| 748 | page = (page_t *)grdxt_get_first( rt , start_key , &found_key ); |
---|
| 749 | |
---|
| 750 | if( page == NULL ) break; |
---|
| 751 | |
---|
[656] | 752 | assert( (page->index == found_key ), "page_index (%d) != key (%d)", page->index, found_key ); |
---|
| 753 | assert( (page->order == 0), "page_order (%d] != 0", page->order ); |
---|
[623] | 754 | |
---|
| 755 | // build extended pointer on page descriptor |
---|
| 756 | page_xp = XPTR( local_cxy , page ); |
---|
| 757 | |
---|
| 758 | // synchronize page if dirty |
---|
| 759 | if( (page->flags & PG_DIRTY) != 0 ) |
---|
| 760 | { |
---|
| 761 | |
---|
| 762 | #if DEBUG_MAPPER_SYNC |
---|
| 763 | if( cycle > DEBUG_MAPPER_SYNC ) |
---|
[626] | 764 | printk("\n[%s] thread[%x,%x] synchonise page %d of <%s> to IOC device\n", |
---|
[623] | 765 | __FUNCTION__, this->process->pid, this->trdid, page->index, name ); |
---|
| 766 | #endif |
---|
| 767 | // copy page to file system |
---|
| 768 | error = vfs_fs_move_page( page_xp , IOC_WRITE ); |
---|
| 769 | |
---|
| 770 | if( error ) |
---|
| 771 | { |
---|
| 772 | printk("\n[ERROR] in %s : cannot synchonize dirty page %d\n", |
---|
| 773 | __FUNCTION__, page->index ); |
---|
| 774 | return -1; |
---|
| 775 | } |
---|
| 776 | |
---|
| 777 | // remove page from PPM dirty list |
---|
| 778 | ppm_page_undo_dirty( page_xp ); |
---|
| 779 | } |
---|
| 780 | else |
---|
| 781 | { |
---|
| 782 | |
---|
| 783 | #if DEBUG_MAPPER_SYNC |
---|
| 784 | if( cycle > DEBUG_MAPPER_SYNC ) |
---|
| 785 | printk("\n[%s] thread[%x,%x] skip page %d for <%s>\n", |
---|
| 786 | __FUNCTION__, this->process->pid, this->trdid, page->index, name ); |
---|
| 787 | #endif |
---|
| 788 | } |
---|
| 789 | |
---|
| 790 | // update loop variable |
---|
| 791 | start_key = page->index + 1; |
---|
| 792 | } // end while |
---|
| 793 | |
---|
| 794 | return 0; |
---|
| 795 | |
---|
| 796 | } // end mapper_sync() |
---|
| 797 | |
---|
[656] | 798 | /////////////////////////////////////////////// |
---|
| 799 | void mapper_display_page( xptr_t mapper_xp, |
---|
| 800 | xptr_t page_xp, |
---|
| 801 | uint32_t nbytes ) |
---|
[611] | 802 | { |
---|
[614] | 803 | char buffer[4096]; // local buffer |
---|
| 804 | uint32_t line; // line index |
---|
| 805 | uint32_t word; // word index |
---|
| 806 | |
---|
| 807 | char name[CONFIG_VFS_MAX_NAME_LENGTH]; |
---|
[606] | 808 | |
---|
[656] | 809 | assert( (nbytes <= 4096) , "nbytes cannot be larger than 4096"); |
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| 810 | assert( (mapper_xp != XPTR_NULL) , "mapper_xp argument cannot be null"); |
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| 811 | assert( (page_xp != XPTR_NULL) , "page_xp argument cannot be null"); |
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[611] | 812 | |
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[656] | 813 | // get mapper cluster and local pointer |
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| 814 | cxy_t mapper_cxy = GET_CXY( mapper_xp ); |
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| 815 | mapper_t * mapper_ptr = GET_PTR( mapper_xp ); |
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[611] | 816 | |
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[656] | 817 | // get page cluster an local pointer |
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| 818 | cxy_t page_cxy = GET_CXY( page_xp ); |
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| 819 | page_t * page_ptr = GET_PTR( page_xp ); |
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[614] | 820 | |
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[656] | 821 | // get page_id and mapper from page descriptor |
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| 822 | uint32_t page_id = hal_remote_l32( XPTR( page_cxy , &page_ptr->index ) ); |
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| 823 | mapper_t * mapper = hal_remote_lpt( XPTR( page_cxy , &page_ptr->mapper ) ); |
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| 824 | |
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| 825 | assert( (mapper_cxy == page_cxy ) , "mapper and page must be in same cluster"); |
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| 826 | assert( (mapper_ptr == mapper ) , "unconsistent mapper_xp & page_xp arguments"); |
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| 827 | |
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[614] | 828 | // get inode |
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[656] | 829 | vfs_inode_t * inode_ptr = hal_remote_lpt( XPTR( mapper_cxy , &mapper_ptr->inode ) ); |
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[614] | 830 | |
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| 831 | // get inode name |
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[656] | 832 | if( inode_ptr == NULL ) strcpy( name , "FAT" ); |
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[614] | 833 | else vfs_inode_get_name( XPTR( mapper_cxy , inode_ptr ) , name ); |
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| 834 | |
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[611] | 835 | // get extended pointer on page base |
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[656] | 836 | xptr_t base_xp = ppm_page2base( page_xp ); |
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[611] | 837 | |
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| 838 | // copy remote page to local buffer |
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| 839 | hal_remote_memcpy( XPTR( local_cxy , buffer ) , base_xp , nbytes ); |
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| 840 | |
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[656] | 841 | // display header |
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| 842 | uint32_t * tabi = (uint32_t *)buffer; |
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| 843 | printk("\n***** mapper <%s> / page_id %d / cxy %x / mapper %x / buffer %x\n", |
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| 844 | name, page_id, mapper_cxy, mapper_ptr, GET_PTR( base_xp ) ); |
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| 845 | |
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[611] | 846 | // display 8 words per line |
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| 847 | for( line = 0 ; line < (nbytes >> 5) ; line++ ) |
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| 848 | { |
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[625] | 849 | printk("%X : ", line << 5 ); |
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[614] | 850 | for( word = 0 ; word < 8 ; word++ ) printk("%X ", tabi[(line<<3) + word] ); |
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[611] | 851 | printk("\n"); |
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| 852 | } |
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| 853 | |
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[656] | 854 | } // end mapper_display_page() |
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[611] | 855 | |
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| 856 | |
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