WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/mips32/include/mm/tlb.h


/*
 * Copyright (C) 2003-2004 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.
 */
 
#ifndef __mips32_TLB_H__
#define __mips32_TLB_H__
 
#include <arch/exception.h>
 
#define TLB_SIZE    48
 
#define TLB_WIRED       1
#define TLB_KSTACK_WIRED_INDEX  0
 
#define TLB_PAGE_MASK_16K   (0x3<<13)
 
#define PAGE_UNCACHED           2
#define PAGE_CACHEABLE_EXC_WRITE    5
 
struct entry_lo {
    unsigned g : 1;     /* global bit */
    unsigned v : 1;     /* valid bit */
    unsigned d : 1;     /* dirty/write-protect bit */
    unsigned c : 3;     /* cache coherency attribute */
    unsigned pfn : 24;  /* frame number */
    unsigned : 2;
} __attribute__ ((packed));
 
struct entry_hi {
    unsigned asid : 8;
    unsigned : 5;
 
    unsigned vpn2 : 19;
} __attribute__ ((packed));
 
struct page_mask {
    unsigned : 13;
    unsigned mask : 12;
    unsigned : 7;
} __attribute__ ((packed));
 
struct tlb_entry {
    struct entry_lo lo0;
    struct entry_lo lo1;
    struct entry_hi hi;
    struct page_mask mask;
} __attribute__ ((packed));
 
 
 
/** Read Indexed TLB Entry
 *
 * Read Indexed TLB Entry.
 */
static inline void tlbr(void)
{
    __asm__ volatile ("tlbr\n\t");
}
 
/** Write Indexed TLB Entry
 *
 * Write Indexed TLB Entry.
 */
static inline void tlbwi(void)
{
    __asm__ volatile ("tlbwi\n\t");
}
 
/** Write Random TLB Entry
 *
 * Write Random TLB Entry.
 */
static inline void tlbwr(void)
{
    __asm__ volatile ("tlbwr\n\t");
}
 
extern void tlb_invalid(struct exception_regdump *pstate);
extern void tlb_refill(struct exception_regdump *pstate);
extern void tlb_modified(struct exception_regdump *pstate);
 
#endif
 

Rev 389	Rev 391
1	/*	1	/*
2	* Copyright (C) 2003-2004 Jakub Jermar	2	* Copyright (C) 2003-2004 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	#ifndef __mips32_TLB_H__	29	#ifndef __mips32_TLB_H__
30	#define __mips32_TLB_H__	30	#define __mips32_TLB_H__
31		31
32	#include <arch/exception.h>	32	#include <arch/exception.h>
33		33
34	#define TLB_SIZE 48	34	#define TLB_SIZE 48
35		35
36	#define TLB_WIRED 1	36	#define TLB_WIRED 1
37	#define TLB_KSTACK_WIRED_INDEX 0	37	#define TLB_KSTACK_WIRED_INDEX 0
38		38
39	#define TLB_PAGE_MASK_16K (0x3<<13)	39	#define TLB_PAGE_MASK_16K (0x3<<13)
40		40
41	#define PAGE_UNCACHED 2	41	#define PAGE_UNCACHED 2
42	#define PAGE_CACHEABLE_EXC_WRITE 5	42	#define PAGE_CACHEABLE_EXC_WRITE 5
43		43
44	struct entry_lo {	44	struct entry_lo {
45	unsigned g : 1; /* global bit */	45	unsigned g : 1; /* global bit */
46	unsigned v : 1; /* valid bit */	46	unsigned v : 1; /* valid bit */
47	unsigned d : 1; /* dirty/write-protect bit */	47	unsigned d : 1; /* dirty/write-protect bit */
48	unsigned c : 3; /* cache coherency attribute */	48	unsigned c : 3; /* cache coherency attribute */
49	unsigned pfn : 24; /* frame number */	49	unsigned pfn : 24; /* frame number */
50	unsigned : 2;	50	unsigned : 2;
51	} __attribute__ ((packed));	51	} __attribute__ ((packed));
52		52
53	struct entry_hi {	53	struct entry_hi {
54	unsigned asid : 8;	54	unsigned asid : 8;
55	unsigned : 4;	55	unsigned : 5;
56	unsigned g : 1;	-
57	unsigned vpn2 : 19;	56	unsigned vpn2 : 19;
58	} __attribute__ ((packed));	57	} __attribute__ ((packed));
59		58
60	struct page_mask {	59	struct page_mask {
61	unsigned : 13;	60	unsigned : 13;
62	unsigned mask : 12;	61	unsigned mask : 12;
63	unsigned : 7;	62	unsigned : 7;
64	} __attribute__ ((packed));	63	} __attribute__ ((packed));
65		64
66	struct tlb_entry {	65	struct tlb_entry {
67	struct entry_lo lo0;	66	struct entry_lo lo0;
68	struct entry_lo lo1;	67	struct entry_lo lo1;
69	struct entry_hi hi;	68	struct entry_hi hi;
70	struct page_mask mask;	69	struct page_mask mask;
71	} __attribute__ ((packed));	70	} __attribute__ ((packed));
72		71
73	typedef struct entry_lo pte_t;	-
74		72
75	/** Read Indexed TLB Entry	73	/** Read Indexed TLB Entry
76	*	74	*
77	* Read Indexed TLB Entry.	75	* Read Indexed TLB Entry.
78	*/	76	*/
79	static inline void tlbr(void)	77	static inline void tlbr(void)
80	{	78	{
81	__asm__ volatile ("tlbr\n\t");	79	__asm__ volatile ("tlbr\n\t");
82	}	80	}
83		81
84	/** Write Indexed TLB Entry	82	/** Write Indexed TLB Entry
85	*	83	*
86	* Write Indexed TLB Entry.	84	* Write Indexed TLB Entry.
87	*/	85	*/
88	static inline void tlbwi(void)	86	static inline void tlbwi(void)
89	{	87	{
90	__asm__ volatile ("tlbwi\n\t");	88	__asm__ volatile ("tlbwi\n\t");
91	}	89	}
92		90
93	/** Write Random TLB Entry	91	/** Write Random TLB Entry
94	*	92	*
95	* Write Random TLB Entry.	93	* Write Random TLB Entry.
96	*/	94	*/
97	static inline void tlbwr(void)	95	static inline void tlbwr(void)
98	{	96	{
99	__asm__ volatile ("tlbwr\n\t");	97	__asm__ volatile ("tlbwr\n\t");
100	}	98	}
101		99
102	extern void tlb_invalid(struct exception_regdump *pstate);	100	extern void tlb_invalid(struct exception_regdump *pstate);
103	extern void tlb_refill(struct exception_regdump *pstate);	101	extern void tlb_refill(struct exception_regdump *pstate);
104	extern void tlb_modified(struct exception_regdump *pstate);	102	extern void tlb_modified(struct exception_regdump *pstate);
105		103
106	#endif	104	#endif
107		105

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/mips32/include/mm/tlb.h @ 1769 – Rev 389 → 391