WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ppc32/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 ppc32mm
 * @{
 */
/** @file
 */
 
#include <arch/mm/as.h>
#include <genarch/mm/as_pt.h>
#include <genarch/mm/asid_fifo.h>
#include <arch.h>
 
/** Architecture dependent address space init. */
void as_arch_init(void)
{
    as_operations = &as_pt_operations;
    asid_fifo_init();
}
 
/** Install address space.
 *
 * Install ASID.
 *
 * @param as Address space structure.
 *
 */
void as_install_arch(as_t *as)
{
    asid_t asid;
    ipl_t ipl;
    uint32_t sr;
 
    ipl = interrupts_disable();
    spinlock_lock(&as->lock);
   
    asid = as->asid;
   
    /* Lower 2 GB, user and supervisor access */
    for (sr = 0; sr < 8; sr++) {
        asm volatile (
            "mtsrin %0, %1\n"
            :
            : "r" ((0x6000 << 16) + (asid << 4) + sr), "r" (sr << 28)
        );
    }
   
    /* Upper 2 GB, only supervisor access */
    for (sr = 8; sr < 16; sr++) {
        asm volatile (
            "mtsrin %0, %1\n"
            :
            : "r" ((0x4000 << 16) + (asid << 4) + sr), "r" (sr << 28)
        );
    }
   
    spinlock_unlock(&as->lock);
    interrupts_restore(ipl);
}
 
/** @}
 */
 

Rev 1733	Rev 1780
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 ppc32mm	29	/** @addtogroup ppc32mm
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 <genarch/mm/as_pt.h>	36	#include <genarch/mm/as_pt.h>
37	#include <genarch/mm/asid_fifo.h>	37	#include <genarch/mm/asid_fifo.h>
38	#include <arch.h>	38	#include <arch.h>
39		39
40	/** Architecture dependent address space init. */	40	/** Architecture dependent address space init. */
41	void as_arch_init(void)	41	void as_arch_init(void)
42	{	42	{
43	as_operations = &as_pt_operations;	43	as_operations = &as_pt_operations;
44	asid_fifo_init();	44	asid_fifo_init();
45	}	45	}
46		46
47	/** Install address space.	47	/** Install address space.
48	*	48	*
49	* Install ASID.	49	* Install ASID.
50	*	50	*
51	* @param as Address space structure.	51	* @param as Address space structure.
52	*	52	*
53	*/	53	*/
54	void as_install_arch(as_t *as)	54	void as_install_arch(as_t *as)
55	{	55	{
56	asid_t asid;	56	asid_t asid;
57	ipl_t ipl;	57	ipl_t ipl;
58	__u32 sr;	58	uint32_t sr;
59		59
60	ipl = interrupts_disable();	60	ipl = interrupts_disable();
61	spinlock_lock(&as->lock);	61	spinlock_lock(&as->lock);
62		62
63	asid = as->asid;	63	asid = as->asid;
64		64
65	/* Lower 2 GB, user and supervisor access */	65	/* Lower 2 GB, user and supervisor access */
66	for (sr = 0; sr < 8; sr++) {	66	for (sr = 0; sr < 8; sr++) {
67	asm volatile (	67	asm volatile (
68	"mtsrin %0, %1\n"	68	"mtsrin %0, %1\n"
69	:	69	:
70	: "r" ((0x6000 << 16) + (asid << 4) + sr), "r" (sr << 28)	70	: "r" ((0x6000 << 16) + (asid << 4) + sr), "r" (sr << 28)
71	);	71	);
72	}	72	}
73		73
74	/* Upper 2 GB, only supervisor access */	74	/* Upper 2 GB, only supervisor access */
75	for (sr = 8; sr < 16; sr++) {	75	for (sr = 8; sr < 16; sr++) {
76	asm volatile (	76	asm volatile (
77	"mtsrin %0, %1\n"	77	"mtsrin %0, %1\n"
78	:	78	:
79	: "r" ((0x4000 << 16) + (asid << 4) + sr), "r" (sr << 28)	79	: "r" ((0x4000 << 16) + (asid << 4) + sr), "r" (sr << 28)
80	);	80	);
81	}	81	}
82		82
83	spinlock_unlock(&as->lock);	83	spinlock_unlock(&as->lock);
84	interrupts_restore(ipl);	84	interrupts_restore(ipl);
85	}	85	}
86		86
87	/** @}	87	/** @}
88	*/	88	*/
89		89

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ppc32/src/mm/as.c @ 873 – Rev 1733 → 1780