00001 /* 00002 * Copyright (C) 2005 Jakub Jermar 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 00009 * - Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * - Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * - The name of the author may not be used to endorse or promote products 00015 * derived from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 00018 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00019 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 00020 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 00021 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00022 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00026 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 */ 00028 00035 #include <arch/mm/as.h> 00036 #include <genarch/mm/as_pt.h> 00037 #include <genarch/mm/asid_fifo.h> 00038 #include <arch/mm/tlb.h> 00039 #include <mm/tlb.h> 00040 #include <mm/as.h> 00041 #include <arch/cp0.h> 00042 #include <arch.h> 00043 00045 void as_arch_init(void) 00046 { 00047 as_operations = &as_pt_operations; 00048 asid_fifo_init(); 00049 } 00050 00057 void as_install_arch(as_t *as) 00058 { 00059 entry_hi_t hi; 00060 ipl_t ipl; 00061 00062 /* 00063 * Install ASID. 00064 */ 00065 hi.value = cp0_entry_hi_read(); 00066 00067 ipl = interrupts_disable(); 00068 spinlock_lock(&as->lock); 00069 hi.asid = as->asid; 00070 cp0_entry_hi_write(hi.value); 00071 spinlock_unlock(&as->lock); 00072 interrupts_restore(ipl); 00073 } 00074 00075