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>
#include <typedefs.h>
 
#ifdef TLBCNT
#   define TLB_ENTRY_COUNT      TLBCNT
#else
#   define TLB_ENTRY_COUNT      48
#endif
 
#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
 
typedef union entry_lo entry_lo_t;
typedef union entry_hi entry_hi_t;
typedef union page_mask page_mask_t;
typedef union index tlb_index_t;
 
union entry_lo {
    struct {
        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;       /* zero */
    } __attribute__ ((packed));
    __u32 value;
};
 
union pte {
    entry_lo_t lo;
    struct {
        unsigned : 30;
        unsigned w : 1;     /* writable */
        unsigned a : 1;     /* accessed */
    } __attribute__ ((packed));
};
 
union entry_hi {
    struct {
        unsigned asid : 8;
        unsigned : 5;
        unsigned vpn2 : 19;
    } __attribute__ ((packed));
    __u32 value;
};
 
union page_mask {
    struct {
        unsigned : 13;
        unsigned mask : 12;
        unsigned : 7;
    } __attribute__ ((packed));
    __u32 value;
};
 
union index {
    struct {
        unsigned index : 4;
        unsigned : 27;
        unsigned p : 1;
    } __attribute__ ((packed));
    __u32 value;
};
 
/** Probe TLB for Matching Entry
 *
 * Probe TLB for Matching Entry.
 */
static inline void tlbp(void)
{
    __asm__ volatile ("tlbp\n\t");
}
 
 
/** 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");
}
 
#define tlb_invalidate(asid)    tlb_invalidate_asid(asid)
 
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 599	Rev 600
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	#include <typedefs.h>	33	#include <typedefs.h>
34		34
-		35	#ifdef TLBCNT
-		36	# define TLB_ENTRY_COUNT TLBCNT
-		37	#else
35	#define TLB_ENTRY_COUNT 48	38	# define TLB_ENTRY_COUNT 48
-		39	#endif
36		40
37	#define TLB_WIRED 1	41	#define TLB_WIRED 1
38	#define TLB_KSTACK_WIRED_INDEX 0	42	#define TLB_KSTACK_WIRED_INDEX 0
39		43
40	#define TLB_PAGE_MASK_16K (0x3<<13)	44	#define TLB_PAGE_MASK_16K (0x3<<13)
41		45
42	#define PAGE_UNCACHED 2	46	#define PAGE_UNCACHED 2
43	#define PAGE_CACHEABLE_EXC_WRITE 5	47	#define PAGE_CACHEABLE_EXC_WRITE 5
44		48
45	typedef union entry_lo entry_lo_t;	49	typedef union entry_lo entry_lo_t;
46	typedef union entry_hi entry_hi_t;	50	typedef union entry_hi entry_hi_t;
47	typedef union page_mask page_mask_t;	51	typedef union page_mask page_mask_t;
48	typedef union index tlb_index_t;	52	typedef union index tlb_index_t;
49		53
50	union entry_lo {	54	union entry_lo {
51	struct {	55	struct {
52	unsigned g : 1; /* global bit */	56	unsigned g : 1; /* global bit */
53	unsigned v : 1; /* valid bit */	57	unsigned v : 1; /* valid bit */
54	unsigned d : 1; /* dirty/write-protect bit */	58	unsigned d : 1; /* dirty/write-protect bit */
55	unsigned c : 3; /* cache coherency attribute */	59	unsigned c : 3; /* cache coherency attribute */
56	unsigned pfn : 24; /* frame number */	60	unsigned pfn : 24; /* frame number */
57	unsigned : 2; /* zero */	61	unsigned : 2; /* zero */
58	} __attribute__ ((packed));	62	} __attribute__ ((packed));
59	__u32 value;	63	__u32 value;
60	};	64	};
61		65
62	union pte {	66	union pte {
63	entry_lo_t lo;	67	entry_lo_t lo;
64	struct {	68	struct {
65	unsigned : 30;	69	unsigned : 30;
66	unsigned w : 1; /* writable */	70	unsigned w : 1; /* writable */
67	unsigned a : 1; /* accessed */	71	unsigned a : 1; /* accessed */
68	} __attribute__ ((packed));	72	} __attribute__ ((packed));
69	};	73	};
70		74
71	union entry_hi {	75	union entry_hi {
72	struct {	76	struct {
73	unsigned asid : 8;	77	unsigned asid : 8;
74	unsigned : 5;	78	unsigned : 5;
75	unsigned vpn2 : 19;	79	unsigned vpn2 : 19;
76	} __attribute__ ((packed));	80	} __attribute__ ((packed));
77	__u32 value;	81	__u32 value;
78	};	82	};
79		83
80	union page_mask {	84	union page_mask {
81	struct {	85	struct {
82	unsigned : 13;	86	unsigned : 13;
83	unsigned mask : 12;	87	unsigned mask : 12;
84	unsigned : 7;	88	unsigned : 7;
85	} __attribute__ ((packed));	89	} __attribute__ ((packed));
86	__u32 value;	90	__u32 value;
87	};	91	};
88		92
89	union index {	93	union index {
90	struct {	94	struct {
91	unsigned index : 4;	95	unsigned index : 4;
92	unsigned : 27;	96	unsigned : 27;
93	unsigned p : 1;	97	unsigned p : 1;
94	} __attribute__ ((packed));	98	} __attribute__ ((packed));
95	__u32 value;	99	__u32 value;
96	};	100	};
97		101
98	/** Probe TLB for Matching Entry	102	/** Probe TLB for Matching Entry
99	*	103	*
100	* Probe TLB for Matching Entry.	104	* Probe TLB for Matching Entry.
101	*/	105	*/
102	static inline void tlbp(void)	106	static inline void tlbp(void)
103	{	107	{
104	__asm__ volatile ("tlbp\n\t");	108	__asm__ volatile ("tlbp\n\t");
105	}	109	}
106		110
107		111
108	/** Read Indexed TLB Entry	112	/** Read Indexed TLB Entry
109	*	113	*
110	* Read Indexed TLB Entry.	114	* Read Indexed TLB Entry.
111	*/	115	*/
112	static inline void tlbr(void)	116	static inline void tlbr(void)
113	{	117	{
114	__asm__ volatile ("tlbr\n\t");	118	__asm__ volatile ("tlbr\n\t");
115	}	119	}
116		120
117	/** Write Indexed TLB Entry	121	/** Write Indexed TLB Entry
118	*	122	*
119	* Write Indexed TLB Entry.	123	* Write Indexed TLB Entry.
120	*/	124	*/
121	static inline void tlbwi(void)	125	static inline void tlbwi(void)
122	{	126	{
123	__asm__ volatile ("tlbwi\n\t");	127	__asm__ volatile ("tlbwi\n\t");
124	}	128	}
125		129
126	/** Write Random TLB Entry	130	/** Write Random TLB Entry
127	*	131	*
128	* Write Random TLB Entry.	132	* Write Random TLB Entry.
129	*/	133	*/
130	static inline void tlbwr(void)	134	static inline void tlbwr(void)
131	{	135	{
132	__asm__ volatile ("tlbwr\n\t");	136	__asm__ volatile ("tlbwr\n\t");
133	}	137	}
134		138
135	#define tlb_invalidate(asid) tlb_invalidate_asid(asid)	139	#define tlb_invalidate(asid) tlb_invalidate_asid(asid)
136		140
137	extern void tlb_invalid(struct exception_regdump *pstate);	141	extern void tlb_invalid(struct exception_regdump *pstate);
138	extern void tlb_refill(struct exception_regdump *pstate);	142	extern void tlb_refill(struct exception_regdump *pstate);
139	extern void tlb_modified(struct exception_regdump *pstate);	143	extern void tlb_modified(struct exception_regdump *pstate);
140		144
141	#endif	145	#endif
142		146

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/mips32/include/mm/tlb.h @ 831 – Rev 599 → 600