WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia64/src/mm/as.c


/*
 * Copyright (c) 2006 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup ia64mm
 * @{
 */
/** @file
 */
 
#include <arch/mm/as.h>
#include <arch/mm/asid.h>
#include <arch/mm/page.h>
#include <genarch/mm/as_ht.h>
#include <genarch/mm/asid_fifo.h>
#include <mm/asid.h>
#include <arch.h>
#include <arch/barrier.h>
#include <synch/spinlock.h>
 
/** Architecture dependent address space init. */
void as_arch_init(void)
{
    as_operations = &as_ht_operations;
    asid_fifo_init();
}
 
/** Prepare registers for switching to another address space.
 *
 * @param as Address space.
 */
void as_install_arch(as_t *as)
{
    ipl_t ipl;
    region_register rr;
    int i;
   
    ipl = interrupts_disable();
    spinlock_lock(&as->lock);
   
    ASSERT(as->asid != ASID_INVALID);
   
    /*
     * Load respective ASID (7 consecutive RIDs) to
     * region registers.
     */
    for (i = 0; i < REGION_REGISTERS; i++) {
        if (i == VRN_KERNEL)
            continue;
       
        rr.word = rr_read(i);
        rr.map.ve = false;          /* disable VHPT walker */
        rr.map.rid = ASID2RID(as->asid, i);
        rr.map.ps = PAGE_WIDTH;
        rr_write(i, rr.word);
    }
    srlz_d();
    srlz_i();
   
    spinlock_unlock(&as->lock);
    interrupts_restore(ipl);
}
 
/** @}
 */
 

Rev 1888	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2006 Jakub Jermar	2	* Copyright (c) 2006 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup ia64mm	29	/** @addtogroup ia64mm
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch/mm/as.h>	35	#include <arch/mm/as.h>
36	#include <arch/mm/asid.h>	36	#include <arch/mm/asid.h>
37	#include <arch/mm/page.h>	37	#include <arch/mm/page.h>
38	#include <genarch/mm/as_ht.h>	38	#include <genarch/mm/as_ht.h>
39	#include <genarch/mm/asid_fifo.h>	39	#include <genarch/mm/asid_fifo.h>
40	#include <mm/asid.h>	40	#include <mm/asid.h>
41	#include <arch.h>	41	#include <arch.h>
42	#include <arch/barrier.h>	42	#include <arch/barrier.h>
43	#include <synch/spinlock.h>	43	#include <synch/spinlock.h>
44		44
45	/** Architecture dependent address space init. */	45	/** Architecture dependent address space init. */
46	void as_arch_init(void)	46	void as_arch_init(void)
47	{	47	{
48	as_operations = &as_ht_operations;	48	as_operations = &as_ht_operations;
49	asid_fifo_init();	49	asid_fifo_init();
50	}	50	}
51		51
52	/** Prepare registers for switching to another address space.	52	/** Prepare registers for switching to another address space.
53	*	53	*
54	* @param as Address space.	54	* @param as Address space.
55	*/	55	*/
56	void as_install_arch(as_t *as)	56	void as_install_arch(as_t *as)
57	{	57	{
58	ipl_t ipl;	58	ipl_t ipl;
59	region_register rr;	59	region_register rr;
60	int i;	60	int i;
61		61
62	ipl = interrupts_disable();	62	ipl = interrupts_disable();
63	spinlock_lock(&as->lock);	63	spinlock_lock(&as->lock);
64		64
65	ASSERT(as->asid != ASID_INVALID);	65	ASSERT(as->asid != ASID_INVALID);
66		66
67	/*	67	/*
68	* Load respective ASID (7 consecutive RIDs) to	68	* Load respective ASID (7 consecutive RIDs) to
69	* region registers.	69	* region registers.
70	*/	70	*/
71	for (i = 0; i < REGION_REGISTERS; i++) {	71	for (i = 0; i < REGION_REGISTERS; i++) {
72	if (i == VRN_KERNEL)	72	if (i == VRN_KERNEL)
73	continue;	73	continue;
74		74
75	rr.word = rr_read(i);	75	rr.word = rr_read(i);
76	rr.map.ve = false; /* disable VHPT walker */	76	rr.map.ve = false; /* disable VHPT walker */
77	rr.map.rid = ASID2RID(as->asid, i);	77	rr.map.rid = ASID2RID(as->asid, i);
78	rr.map.ps = PAGE_WIDTH;	78	rr.map.ps = PAGE_WIDTH;
79	rr_write(i, rr.word);	79	rr_write(i, rr.word);
80	}	80	}
81	srlz_d();	81	srlz_d();
82	srlz_i();	82	srlz_i();
83		83
84	spinlock_unlock(&as->lock);	84	spinlock_unlock(&as->lock);
85	interrupts_restore(ipl);	85	interrupts_restore(ipl);
86	}	86	}
87		87
88	/** @}	88	/** @}
89	*/	89	*/
90		90

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia64/src/mm/as.c – Rev 1888 → 2071