WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia64/src/mm/page.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.
 */
 
#include <arch/mm/page.h>
#include <arch/types.h>
#include <genarch/mm/page_ht.h>
#include <mm/page.h>
#include <config.h>
#include <panic.h>
 
__u64 thash(__u64 va);
__u64 thash(__u64 va)
{
    __u64 ret;
    asm
    (
        "thash %0=%1;;"
        :"=r"(ret)
        :"r" (va)
    );
   
    return ret;
}
 
__u64 ttag(__u64 va);
__u64 ttag(__u64 va)
{
    __u64 ret;
    asm
    (
        "ttag %0=%1;;"
        :"=r"(ret)
        :"r" (va)
    );
   
    return ret;
}
 
 
static void set_VHPT_environment(void)
{
    return;
 
    /*
    TODO:
    */
   
    int i;
   
    /* First set up REGION REGISTER 0 */
   
    region_register rr;
    rr.map.ve=0;                  /*Disable Walker*/
    rr.map.ps=PAGE_WIDTH;
    rr.map.rid=REGION_RID_MAIN;
   
    asm
    (
        "mov rr[r0]=%0;;"
        :
        :"r"(rr.word)
    );
       
    /* And Invalidate the rest of REGION REGISTERS */
   
    for(i=1;i<REGION_REGISTERS;i++)
    {
        rr.map.rid=REGION_RID_FIRST_INVALID+i-1;
        asm
        (
            "mov r8=%1;;"
            "mov rr[r8]=%0;;"
            :
            :"r"(rr.word),"r"(i)
            :"r8"
        );
    };
 
    PTA_register pta;
    pta.map.ve=0;                   /*Disable Walker*/
    pta.map.vf=1;                   /*Large entry format*/
    pta.map.size=VHPT_WIDTH;
    pta.map.base=VHPT_BASE;
   
   
    /*Write PTA*/
    asm
    (
        "mov cr8=%0;;"
        :
        :"r"(pta.word)
    ); 
   
}  
 
 
void page_arch_init(void)
{
    page_operations = &page_ht_operations;
    set_VHPT_environment();
}
 

Rev 716	Rev 726
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	#include <arch/mm/page.h>	29	#include <arch/mm/page.h>
30	#include <arch/types.h>	30	#include <arch/types.h>
31	#include <genarch/mm/page_ht.h>	31	#include <genarch/mm/page_ht.h>
32	#include <mm/page.h>	32	#include <mm/page.h>
33	#include <config.h>	33	#include <config.h>
34	#include <panic.h>	34	#include <panic.h>
35		35
36	__u64 thash(__u64 va);	36	__u64 thash(__u64 va);
37	__u64 thash(__u64 va)	37	__u64 thash(__u64 va)
38	{	38	{
39	__u64 ret;	39	__u64 ret;
40	asm	40	asm
41	(	41	(
42	"thash %0=%1;;"	42	"thash %0=%1;;"
43	:"=r"(ret)	43	:"=r"(ret)
44	:"r" (va)	44	:"r" (va)
45	);	45	);
46		46
47	return ret;	47	return ret;
48	}	48	}
49		49
50	__u64 ttag(__u64 va);	50	__u64 ttag(__u64 va);
51	__u64 ttag(__u64 va)	51	__u64 ttag(__u64 va)
52	{	52	{
53	__u64 ret;	53	__u64 ret;
54	asm	54	asm
55	(	55	(
56	"ttag %0=%1;;"	56	"ttag %0=%1;;"
57	:"=r"(ret)	57	:"=r"(ret)
58	:"r" (va)	58	:"r" (va)
59	);	59	);
60		60
61	return ret;	61	return ret;
62	}	62	}
63		63
64		64
65	static void set_VHPT_environment(void)	65	static void set_VHPT_environment(void)
66	{	66	{
-		67	return;
-		68
67	/*	69	/*
68	TODO:	70	TODO:
69	*/	71	*/
70		72
71	int i;	73	int i;
72		74
73	/* First set up REGION REGISTER 0 */	75	/* First set up REGION REGISTER 0 */
74		76
75	region_register rr;	77	region_register rr;
76	rr.map.ve=0; /Disable Walker/	78	rr.map.ve=0; /Disable Walker/
77	rr.map.ps=PAGE_WIDTH;	79	rr.map.ps=PAGE_WIDTH;
78	rr.map.rid=REGION_RID_MAIN;	80	rr.map.rid=REGION_RID_MAIN;
79		81
80	asm	82	asm
81	(	83	(
82	"mov rr[r0]=%0;;"	84	"mov rr[r0]=%0;;"
83	:	85	:
84	:"r"(rr.word)	86	:"r"(rr.word)
85	);	87	);
86		88
87	/* And Invalidate the rest of REGION REGISTERS */	89	/* And Invalidate the rest of REGION REGISTERS */
88		90
89	for(i=1;i<REGION_REGISTERS;i++)	91	for(i=1;i<REGION_REGISTERS;i++)
90	{	92	{
91	rr.map.rid=REGION_RID_FIRST_INVALID+i-1;	93	rr.map.rid=REGION_RID_FIRST_INVALID+i-1;
92	asm	94	asm
93	(	95	(
94	"mov r8=%1;;"	96	"mov r8=%1;;"
95	"mov rr[r8]=%0;;"	97	"mov rr[r8]=%0;;"
96	:	98	:
97	:"r"(rr.word),"r"(i)	99	:"r"(rr.word),"r"(i)
98	:"r8"	100	:"r8"
99	);	101	);
100	};	102	};
101		103
102	PTA_register pta;	104	PTA_register pta;
103	pta.map.ve=0; /Disable Walker/	105	pta.map.ve=0; /Disable Walker/
104	pta.map.vf=1; /Large entry format/	106	pta.map.vf=1; /Large entry format/
105	pta.map.size=VHPT_WIDTH;	107	pta.map.size=VHPT_WIDTH;
106	pta.map.base=VHPT_BASE;	108	pta.map.base=VHPT_BASE;
107		109
108		110
109	/Write PTA/	111	/Write PTA/
110	asm	112	asm
111	(	113	(
112	"mov cr8=%0;;"	114	"mov cr8=%0;;"
113	:	115	:
114	:"r"(pta.word)	116	:"r"(pta.word)
115	);	117	);
116		118
117	}	119	}
118		120
119		121
120	void page_arch_init(void)	122	void page_arch_init(void)
121	{	123	{
122	page_operations = &page_ht_operations;	124	page_operations = &page_ht_operations;
123	set_VHPT_environment();	125	set_VHPT_environment();
124	}	126	}
125		127

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia64/src/mm/page.c @ 2472 – Rev 716 → 726