Subversion Repositories HelenOS

Rev

Rev 2106 | Rev 3672 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1889 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
1889 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
/** @addtogroup sparc64mm  
30
 * @{
31
 */
32
/** @file
33
 */
34
 
35
#ifndef KERN_sparc64_TSB_H_
36
#define KERN_sparc64_TSB_H_
37
 
38
/*
39
 * ITSB abd DTSB will claim 64K of memory, which
40
 * is a nice number considered that it is one of
41
 * the page sizes supported by hardware, which,
42
 * again, is nice because TSBs need to be locked
43
 * in TLBs - only one TLB entry will do.
44
 */
2048 jermar 45
#define TSB_SIZE            2   /* when changing this, change
46
                         * as.c as well */
47
#define ITSB_ENTRY_COUNT        (512 * (1 << TSB_SIZE))
48
#define DTSB_ENTRY_COUNT        (512 * (1 << TSB_SIZE))
1889 jermar 49
 
1891 jermar 50
#define TSB_TAG_TARGET_CONTEXT_SHIFT    48
51
 
52
#ifndef __ASM__
53
 
54
#include <arch/mm/tte.h>
55
#include <arch/mm/mmu.h>
56
#include <arch/types.h>
57
 
1890 jermar 58
/** TSB Base register. */
2089 decky 59
typedef union tsb_base_reg {
1890 jermar 60
    uint64_t value;
61
    struct {
62
        uint64_t base : 51; /**< TSB base address, bits 63:13. */
2048 jermar 63
        unsigned split : 1; /**< Split vs. common TSB for 8K and 64K
64
                     * pages. HelenOS uses only 8K pages
65
                     * for user mappings, so we always set
66
                     * this to 0.
67
                     */
1890 jermar 68
        unsigned : 9;
2048 jermar 69
        unsigned size : 3;  /**< TSB size. Number of entries is
70
                     * 512 * 2^size. */
1890 jermar 71
    } __attribute__ ((packed));
2089 decky 72
} tsb_base_reg_t;
1890 jermar 73
 
74
/** Read ITSB Base register.
75
 *
76
 * @return Content of the ITSB Base register.
77
 */
78
static inline uint64_t itsb_base_read(void)
79
{
80
    return asi_u64_read(ASI_IMMU, VA_IMMU_TSB_BASE);
81
}
82
 
83
/** Read DTSB Base register.
84
 *
85
 * @return Content of the DTSB Base register.
86
 */
87
static inline uint64_t dtsb_base_read(void)
88
{
89
    return asi_u64_read(ASI_DMMU, VA_DMMU_TSB_BASE);
90
}
91
 
92
/** Write ITSB Base register.
93
 *
94
 * @param v New content of the ITSB Base register.
95
 */
96
static inline void itsb_base_write(uint64_t v)
97
{
98
    asi_u64_write(ASI_IMMU, VA_IMMU_TSB_BASE, v);
99
}
100
 
101
/** Write DTSB Base register.
102
 *
103
 * @param v New content of the DTSB Base register.
104
 */
105
static inline void dtsb_base_write(uint64_t v)
106
{
107
    asi_u64_write(ASI_DMMU, VA_DMMU_TSB_BASE, v);
108
}
109
 
2106 jermar 110
/* Forward declarations. */
111
struct as;
112
struct pte;
1889 jermar 113
 
2106 jermar 114
extern void tsb_invalidate(struct as *as, uintptr_t page, count_t pages);
2141 jermar 115
extern void itsb_pte_copy(struct pte *t, index_t index);
116
extern void dtsb_pte_copy(struct pte *t, index_t index, bool ro);
2106 jermar 117
 
1891 jermar 118
#endif /* !def __ASM__ */
119
 
1889 jermar 120
#endif
121
 
122
/** @}
123
 */