Subversion Repositories HelenOS

Rev

Rev 4129 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
3771 rimsky 1
/*
2
 * Copyright (c) 2005 Jakub Jermar
3
 * Copyright (c) 2008 Pavel Rimsky
4
 * All rights reserved.
5
 *
6
 * Redistribution and use in source and binary forms, with or without
7
 * modification, are permitted provided that the following conditions
8
 * are met:
9
 *
10
 * - Redistributions of source code must retain the above copyright
11
 *   notice, this list of conditions and the following disclaimer.
12
 * - Redistributions in binary form must reproduce the above copyright
13
 *   notice, this list of conditions and the following disclaimer in the
14
 *   documentation and/or other materials provided with the distribution.
15
 * - The name of the author may not be used to endorse or promote products
16
 *   derived from this software without specific prior written permission.
17
 *
18
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
 */
29
 
30
/** @addtogroup sparc64mm  
31
 * @{
32
 */
33
/** @file
34
 */
35
 
36
#ifndef KERN_sparc64_sun4v_TLB_H_
37
#define KERN_sparc64_sun4v_TLB_H_
38
 
3835 rimsky 39
#define MMU_FSA_ALIGNMENT   64
40
#define MMU_FSA_SIZE        128
41
 
3771 rimsky 42
#ifndef __ASM__
43
 
3862 rimsky 44
#include <arch/mm/tte.h>
4130 rimsky 45
#include <print.h>
3862 rimsky 46
#include <arch/mm/mmu.h>
3771 rimsky 47
#include <arch/mm/page.h>
48
#include <arch/asm.h>
49
#include <arch/barrier.h>
50
#include <arch/types.h>
51
#include <arch/register.h>
52
#include <arch/cpu.h>
3862 rimsky 53
#include <arch/sun4v/hypercall.h>
3771 rimsky 54
 
55
/**
56
 * Structure filled by hypervisor (or directly CPU, if implemented so) when
57
 * a MMU fault occurs. The structure describes the exact condition which
3862 rimsky 58
 * has caused the fault.
3771 rimsky 59
 */
60
typedef struct mmu_fault_status_area {
61
    uint64_t ift;       /**< Instruction fault type (IFT) */
62
    uint64_t ifa;       /**< Instruction fault address (IFA) */
63
    uint64_t ifc;       /**< Instruction fault context (IFC) */
64
    uint8_t reserved1[0x28];
65
 
66
    uint64_t dft;       /**< Data fault type (DFT) */
67
    uint64_t dfa;       /**< Data fault address (DFA) */
68
    uint64_t dfc;       /**< Data fault context (DFC) */
69
    uint8_t reserved2[0x28];
70
} __attribute__ ((packed)) mmu_fault_status_area_t;
71
 
3862 rimsky 72
#define DTLB_MAX_LOCKED_ENTRIES     8
3771 rimsky 73
 
3862 rimsky 74
/** Bit width of the TLB-locked portion of kernel address space. */
75
#define KERNEL_PAGE_WIDTH       22  /* 4M */
3771 rimsky 76
 
77
/*
3862 rimsky 78
 * Reading and writing context registers.
79
 *
80
 * Note that UltraSPARC Architecture-compatible processors do not require
81
 * a MEMBAR #Sync, FLUSH, DONE, or RETRY instruction after a store to an
82
 * MMU register for proper operation.
83
 *
3771 rimsky 84
 */
85
 
86
/** Read MMU Primary Context Register.
87
 *
3862 rimsky 88
 * @return  Current value of Primary Context Register.
3771 rimsky 89
 */
90
static inline uint64_t mmu_primary_context_read(void)
91
{
3862 rimsky 92
    return asi_u64_read(ASI_PRIMARY_CONTEXT_REG, VA_PRIMARY_CONTEXT_REG);
3771 rimsky 93
}
3862 rimsky 94
 
3771 rimsky 95
/** Write MMU Primary Context Register.
96
 *
3862 rimsky 97
 * @param v New value of Primary Context Register.
3771 rimsky 98
 */
99
static inline void mmu_primary_context_write(uint64_t v)
100
{
3862 rimsky 101
    asi_u64_write(ASI_PRIMARY_CONTEXT_REG, VA_PRIMARY_CONTEXT_REG, v);
3771 rimsky 102
}
3862 rimsky 103
 
3771 rimsky 104
/** Read MMU Secondary Context Register.
105
 *
3862 rimsky 106
 * @return  Current value of Secondary Context Register.
3771 rimsky 107
 */
108
static inline uint64_t mmu_secondary_context_read(void)
109
{
3862 rimsky 110
    return asi_u64_read(ASI_SECONDARY_CONTEXT_REG, VA_SECONDARY_CONTEXT_REG);
3771 rimsky 111
}
3862 rimsky 112
 
113
/** Write MMU Secondary Context Register.
3771 rimsky 114
 *
3862 rimsky 115
 * @param v New value of Secondary Context Register.
3771 rimsky 116
 */
117
static inline void mmu_secondary_context_write(uint64_t v)
118
{
3862 rimsky 119
    asi_u64_write(ASI_SECONDARY_CONTEXT_REG, VA_SECONDARY_CONTEXT_REG, v);
3771 rimsky 120
}
121
 
3862 rimsky 122
/**
123
 * Demaps all mappings in a context.
124
 *
125
 * @param context   number of the context
126
 * @param mmu_flag  MMU_FLAG_DTLB, MMU_FLAG_ITLB or a combination of both
127
 */
128
static inline void mmu_demap_ctx(int context, int mmu_flag) {
129
    __hypercall_fast4(MMU_DEMAP_CTX, 0, 0, context, mmu_flag);
3771 rimsky 130
}
131
 
4129 rimsky 132
/**
133
 * Demaps given page.
134
 *
135
 * @param vaddr     VA of the page to be demapped
136
 * @param context   number of the context
137
 * @param mmu_flag  MMU_FLAG_DTLB, MMU_FLAG_ITLB or a combination of both
138
 */
3862 rimsky 139
static inline void mmu_demap_page(uintptr_t vaddr, int context, int mmu_flag) {
140
    __hypercall_fast5(MMU_DEMAP_PAGE, 0, 0, vaddr, context, mmu_flag);
141
}
142
 
3771 rimsky 143
extern void fast_instruction_access_mmu_miss(unative_t, istate_t *);
3993 rimsky 144
extern void fast_data_access_mmu_miss(unative_t, istate_t *);
145
extern void fast_data_access_protection(unative_t, istate_t *);
3771 rimsky 146
 
147
extern void dtlb_insert_mapping(uintptr_t, uintptr_t, int, bool, bool);
148
 
4129 rimsky 149
extern void describe_dmmu_fault(void);
3771 rimsky 150
 
151
#endif /* !def __ASM__ */
152
 
153
#endif
154
 
155
/** @}
156
 */