tlb.h revision 176994 
1/*-
2 * Copyright (c) 2001 Jake Burkholder.
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 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/sparc64/include/tlb.h 176994 2008-03-09 15:53:34Z marius $
27 */
28
29#ifndef	_MACHINE_TLB_H_
30#define	_MACHINE_TLB_H_
31
32#define	TLB_DIRECT_ADDRESS_BITS		(43)
33#define	TLB_DIRECT_PAGE_BITS		(PAGE_SHIFT_4M)
34
35#define	TLB_DIRECT_ADDRESS_MASK		((1UL << TLB_DIRECT_ADDRESS_BITS) - 1)
36#define	TLB_DIRECT_PAGE_MASK		((1UL << TLB_DIRECT_PAGE_BITS) - 1)
37
38#define	TLB_PHYS_TO_DIRECT(pa) \
39	((pa) | VM_MIN_DIRECT_ADDRESS)
40#define	TLB_DIRECT_TO_PHYS(va) \
41	((va) & TLB_DIRECT_ADDRESS_MASK)
42#define	TLB_DIRECT_TO_TTE_MASK \
43	(TD_V | TD_4M | (TLB_DIRECT_ADDRESS_MASK - TLB_DIRECT_PAGE_MASK))
44
45#define	TLB_DAR_SLOT_SHIFT		(3)
46#define	TLB_DAR_SLOT(slot)		((slot) << TLB_DAR_SLOT_SHIFT)
47
48#define	TAR_VPN_SHIFT			(13)
49#define	TAR_CTX_MASK			((1 << TAR_VPN_SHIFT) - 1)
50
51#define	TLB_TAR_VA(va)			((va) & ~TAR_CTX_MASK)
52#define	TLB_TAR_CTX(ctx)		((ctx) & TAR_CTX_MASK)
53
54#define	TLB_DEMAP_ID_SHIFT		(4)
55#define	TLB_DEMAP_ID_PRIMARY		(0)
56#define	TLB_DEMAP_ID_SECONDARY		(1)
57#define	TLB_DEMAP_ID_NUCLEUS		(2)
58
59#define	TLB_DEMAP_TYPE_SHIFT		(6)
60#define	TLB_DEMAP_TYPE_PAGE		(0)
61#define	TLB_DEMAP_TYPE_CONTEXT		(1)
62/* US-III and greater only */
63#define	TLB_DEMAP_TYPE_ALL		(2)
64
65#define	TLB_DEMAP_VA(va)		((va) & ~PAGE_MASK)
66#define	TLB_DEMAP_ID(id)		((id) << TLB_DEMAP_ID_SHIFT)
67#define	TLB_DEMAP_TYPE(type)		((type) << TLB_DEMAP_TYPE_SHIFT)
68
69#define	TLB_DEMAP_PAGE			(TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_PAGE))
70#define	TLB_DEMAP_CONTEXT		(TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_CONTEXT))
71#define	TLB_DEMAP_ALL			(TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_ALL))
72
73#define	TLB_DEMAP_PRIMARY		(TLB_DEMAP_ID(TLB_DEMAP_ID_PRIMARY))
74#define	TLB_DEMAP_SECONDARY		(TLB_DEMAP_ID(TLB_DEMAP_ID_SECONDARY))
75#define	TLB_DEMAP_NUCLEUS		(TLB_DEMAP_ID(TLB_DEMAP_ID_NUCLEUS))
76
77#define	TLB_CTX_KERNEL			(0)
78#define	TLB_CTX_USER_MIN		(1)
79#define	TLB_CTX_USER_MAX		(8192)
80
81#define	MMU_SFSR_ASI_SHIFT		(16)
82#define	MMU_SFSR_FT_SHIFT		(7)
83#define	MMU_SFSR_E_SHIFT		(6)
84#define	MMU_SFSR_CT_SHIFT		(4)
85#define	MMU_SFSR_PR_SHIFT		(3)
86#define	MMU_SFSR_W_SHIFT		(2)
87#define	MMU_SFSR_OW_SHIFT		(1)
88#define	MMU_SFSR_FV_SHIFT		(0)
89
90#define	MMU_SFSR_ASI_SIZE		(8)
91#define	MMU_SFSR_FT_SIZE		(6)
92#define	MMU_SFSR_CT_SIZE		(2)
93
94#define	MMU_SFSR_GET_ASI(sfsr) \
95	(((sfsr) >> MMU_SFSR_ASI_SHIFT) & ((1UL << MMU_SFSR_ASI_SIZE) - 1))
96#define	MMU_SFSR_W			(1UL << MMU_SFSR_W_SHIFT)
97#define	MMU_SFSR_FV			(1UL << MMU_SFSR_FV_SHIFT)
98
99typedef void tlb_flush_nonlocked_t(void);
100typedef void tlb_flush_user_t(void);
101
102struct pmap;
103struct tlb_entry;
104
105extern int kernel_tlb_slots;
106extern struct tlb_entry *kernel_tlbs;
107
108void	tlb_context_demap(struct pmap *pm);
109void	tlb_page_demap(struct pmap *pm, vm_offset_t va);
110void	tlb_range_demap(struct pmap *pm, vm_offset_t start, vm_offset_t end);
111
112tlb_flush_nonlocked_t cheetah_tlb_flush_nonlocked;
113tlb_flush_user_t cheetah_tlb_flush_user;
114
115tlb_flush_nonlocked_t spitfire_tlb_flush_nonlocked;
116tlb_flush_user_t spitfire_tlb_flush_user;
117
118extern tlb_flush_nonlocked_t *tlb_flush_nonlocked;
119extern tlb_flush_user_t *tlb_flush_user;
120
121#endif /* !_MACHINE_TLB_H_ */
122