WebSVN – HelenOS – Diff – /branches/tracing/kernel/arch/ia64/src/mm/vhpt.c


/*
* Copyright (c) 2006 Jakub Vana
* 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 <memstr.h>
#include <arch/mm/vhpt.h>
#include <mm/frame.h>
#include <print.h>
 
static vhpt_entry_t* vhpt_base;
 
uintptr_t vhpt_set_up(void)
{
    vhpt_base = frame_alloc(VHPT_WIDTH - FRAME_WIDTH,
        FRAME_KA | FRAME_ATOMIC);
    if (!vhpt_base)
        panic("Kernel configured with VHPT but no memory for table.");
    vhpt_invalidate_all();
    return (uintptr_t) vhpt_base;
}
 
 
void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry)
{
    region_register rr_save, rr;
    size_t vrn;
    rid_t rid;
    uint64_t tag;
 
    vhpt_entry_t *ventry;
 
 
    vrn = va >> VRN_SHIFT;
    rid = ASID2RID(asid, vrn);
                                                                                                               
    rr_save.word = rr_read(vrn);
    rr.word = rr_save.word;
    rr.map.rid = rid;
    rr_write(vrn, rr.word);
    srlz_i();
   
    ventry = (vhpt_entry_t *) thash(va);
    tag = ttag(va);
    rr_write(vrn, rr_save.word);
    srlz_i();
    srlz_d();
 
    ventry->word[0] = entry.word[0];
    ventry->word[1] = entry.word[1];
    ventry->present.tag.tag_word = tag;
}
 
void vhpt_invalidate_all()
{
    memsetb(vhpt_base, 1 << VHPT_WIDTH, 0);
}
 
void vhpt_invalidate_asid(asid_t asid)
{
    vhpt_invalidate_all();
}
 
/** @}
 */
 

Rev 4377	Rev 4692
1	/*	1	/*
2	* Copyright (c) 2006 Jakub Vana	2	* Copyright (c) 2006 Jakub Vana
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 <memstr.h>	35	#include <memstr.h>
36	#include <arch/mm/vhpt.h>	36	#include <arch/mm/vhpt.h>
37	#include <mm/frame.h>	37	#include <mm/frame.h>
38	#include <print.h>	38	#include <print.h>
39		39
40	static vhpt_entry_t* vhpt_base;	40	static vhpt_entry_t* vhpt_base;
41		41
42	uintptr_t vhpt_set_up(void)	42	uintptr_t vhpt_set_up(void)
43	{	43	{
44	vhpt_base = frame_alloc(VHPT_WIDTH - FRAME_WIDTH,	44	vhpt_base = frame_alloc(VHPT_WIDTH - FRAME_WIDTH,
45	FRAME_KA \| FRAME_ATOMIC);	45	FRAME_KA \| FRAME_ATOMIC);
46	if (!vhpt_base)	46	if (!vhpt_base)
47	panic("Kernel configured with VHPT but no memory for table.");	47	panic("Kernel configured with VHPT but no memory for table.");
48	vhpt_invalidate_all();	48	vhpt_invalidate_all();
49	return (uintptr_t) vhpt_base;	49	return (uintptr_t) vhpt_base;
50	}	50	}
51		51
52		52
53	void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry)	53	void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry)
54	{	54	{
55	region_register rr_save, rr;	55	region_register rr_save, rr;
56	index_t vrn;	56	size_t vrn;
57	rid_t rid;	57	rid_t rid;
58	uint64_t tag;	58	uint64_t tag;
59		59
60	vhpt_entry_t *ventry;	60	vhpt_entry_t *ventry;
61		61
62		62
63	vrn = va >> VRN_SHIFT;	63	vrn = va >> VRN_SHIFT;
64	rid = ASID2RID(asid, vrn);	64	rid = ASID2RID(asid, vrn);
65		65
66	rr_save.word = rr_read(vrn);	66	rr_save.word = rr_read(vrn);
67	rr.word = rr_save.word;	67	rr.word = rr_save.word;
68	rr.map.rid = rid;	68	rr.map.rid = rid;
69	rr_write(vrn, rr.word);	69	rr_write(vrn, rr.word);
70	srlz_i();	70	srlz_i();
71		71
72	ventry = (vhpt_entry_t *) thash(va);	72	ventry = (vhpt_entry_t *) thash(va);
73	tag = ttag(va);	73	tag = ttag(va);
74	rr_write(vrn, rr_save.word);	74	rr_write(vrn, rr_save.word);
75	srlz_i();	75	srlz_i();
76	srlz_d();	76	srlz_d();
77		77
78	ventry->word[0] = entry.word[0];	78	ventry->word[0] = entry.word[0];
79	ventry->word[1] = entry.word[1];	79	ventry->word[1] = entry.word[1];
80	ventry->present.tag.tag_word = tag;	80	ventry->present.tag.tag_word = tag;
81	}	81	}
82		82
83	void vhpt_invalidate_all()	83	void vhpt_invalidate_all()
84	{	84	{
85	memsetb(vhpt_base, 1 << VHPT_WIDTH, 0);	85	memsetb(vhpt_base, 1 << VHPT_WIDTH, 0);
86	}	86	}
87		87
88	void vhpt_invalidate_asid(asid_t asid)	88	void vhpt_invalidate_asid(asid_t asid)
89	{	89	{
90	vhpt_invalidate_all();	90	vhpt_invalidate_all();
91	}	91	}
92		92
93	/** @}	93	/** @}
94	*/	94	*/
95		95

Subversion Repositories HelenOS

(root)/branches/tracing/kernel/arch/ia64/src/mm/vhpt.c – Rev 4377 → 4692