tlb.h revision 182878 
138738Sbrian/*-
238738Sbrian * Copyright (c) 2001 Jake Burkholder.
337Srgrimes * 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 182878 2008-09-08 21:24:25Z 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_CXR_CTX_BITS		(13)
55#define	TLB_CXR_CTX_MASK						\
56	(((1UL << TLB_CXR_CTX_BITS) - 1) << TLB_CXR_CTX_SHIFT)
57#define	TLB_CXR_CTX_SHIFT		(0)
58#define	TLB_CXR_PGSZ_BITS		(3)
59#define	TLB_PCXR_PGSZ_MASK						\
60	((((1UL << TLB_CXR_PGSZ_BITS) - 1) << TLB_PCXR_N_PGSZ0_SHIFT) |	\
61	(((1UL << TLB_CXR_PGSZ_BITS) - 1) << TLB_PCXR_N_PGSZ1_SHIFT) |	\
62	(((1UL << TLB_CXR_PGSZ_BITS) - 1) << TLB_PCXR_P_PGSZ0_SHIFT) |	\
63	(((1UL << TLB_CXR_PGSZ_BITS) - 1) << TLB_PCXR_P_PGSZ1_SHIFT))
64#define	TLB_PCXR_N_PGSZ0_SHIFT		(61)
65#define	TLB_PCXR_N_PGSZ1_SHIFT		(58)
66#define	TLB_PCXR_P_PGSZ0_SHIFT		(16)
67#define	TLB_PCXR_P_PGSZ1_SHIFT		(19)
68#define	TLB_SCXR_PGSZ_MASK						\
69	((((1UL << TLB_CXR_PGSZ_BITS) - 1) << TLB_SCXR_S_PGSZ0_SHIFT) |	\
70	(((1UL << TLB_CXR_PGSZ_BITS) - 1) << TLB_SCXR_S_PGSZ1_SHIFT))
71#define	TLB_SCXR_S_PGSZ1_SHIFT		(19)
72#define	TLB_SCXR_S_PGSZ0_SHIFT		(16)
73
74#define	TLB_TAE_PGSZ_BITS		(3)
75#define	TLB_TAE_PGSZ0_MASK						\
76	(((1UL << TLB_TAE_PGSZ_BITS) - 1) << TLB_TAE_PGSZ0_SHIFT)
77#define	TLB_TAE_PGSZ1_MASK						\
78	(((1UL << TLB_TAE_PGSZ_BITS) - 1) << TLB_TAE_PGSZ1_SHIFT)
79#define	TLB_TAE_PGSZ0_SHIFT		(16)
80#define	TLB_TAE_PGSZ1_SHIFT		(19)
81
82#define	TLB_DEMAP_ID_SHIFT		(4)
83#define	TLB_DEMAP_ID_PRIMARY		(0)
84#define	TLB_DEMAP_ID_SECONDARY		(1)
85#define	TLB_DEMAP_ID_NUCLEUS		(2)
86
87#define	TLB_DEMAP_TYPE_SHIFT		(6)
88#define	TLB_DEMAP_TYPE_PAGE		(0)
89#define	TLB_DEMAP_TYPE_CONTEXT		(1)
90#define	TLB_DEMAP_TYPE_ALL		(2)	/* USIII and beyond only */
91
92#define	TLB_DEMAP_VA(va)		((va) & ~PAGE_MASK)
93#define	TLB_DEMAP_ID(id)		((id) << TLB_DEMAP_ID_SHIFT)
94#define	TLB_DEMAP_TYPE(type)		((type) << TLB_DEMAP_TYPE_SHIFT)
95
96#define	TLB_DEMAP_PAGE			(TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_PAGE))
97#define	TLB_DEMAP_CONTEXT		(TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_CONTEXT))
98#define	TLB_DEMAP_ALL			(TLB_DEMAP_TYPE(TLB_DEMAP_TYPE_ALL))
99
100#define	TLB_DEMAP_PRIMARY		(TLB_DEMAP_ID(TLB_DEMAP_ID_PRIMARY))
101#define	TLB_DEMAP_SECONDARY		(TLB_DEMAP_ID(TLB_DEMAP_ID_SECONDARY))
102#define	TLB_DEMAP_NUCLEUS		(TLB_DEMAP_ID(TLB_DEMAP_ID_NUCLEUS))
103
104#define	TLB_CTX_KERNEL			(0)
105#define	TLB_CTX_USER_MIN		(1)
106#define	TLB_CTX_USER_MAX		(8192)
107
108#define	MMU_SFSR_ASI_SHIFT		(16)
109#define	MMU_SFSR_FT_SHIFT		(7)
110#define	MMU_SFSR_E_SHIFT		(6)
111#define	MMU_SFSR_CT_SHIFT		(4)
112#define	MMU_SFSR_PR_SHIFT		(3)
113#define	MMU_SFSR_W_SHIFT		(2)
114#define	MMU_SFSR_OW_SHIFT		(1)
115#define	MMU_SFSR_FV_SHIFT		(0)
116
117#define	MMU_SFSR_ASI_SIZE		(8)
118#define	MMU_SFSR_FT_SIZE		(6)
119#define	MMU_SFSR_CT_SIZE		(2)
120
121#define	MMU_SFSR_GET_ASI(sfsr) \
122	(((sfsr) >> MMU_SFSR_ASI_SHIFT) & ((1UL << MMU_SFSR_ASI_SIZE) - 1))
123#define	MMU_SFSR_W			(1UL << MMU_SFSR_W_SHIFT)
124#define	MMU_SFSR_FV			(1UL << MMU_SFSR_FV_SHIFT)
125
126typedef void tlb_flush_nonlocked_t(void);
127typedef void tlb_flush_user_t(void);
128
129struct pmap;
130struct tlb_entry;
131
132extern int kernel_tlb_slots;
133extern struct tlb_entry *kernel_tlbs;
134
135void	tlb_context_demap(struct pmap *pm);
136void	tlb_page_demap(struct pmap *pm, vm_offset_t va);
137void	tlb_range_demap(struct pmap *pm, vm_offset_t start, vm_offset_t end);
138
139tlb_flush_nonlocked_t cheetah_tlb_flush_nonlocked;
140tlb_flush_user_t cheetah_tlb_flush_user;
141
142tlb_flush_nonlocked_t spitfire_tlb_flush_nonlocked;
143tlb_flush_user_t spitfire_tlb_flush_user;
144
145extern tlb_flush_nonlocked_t *tlb_flush_nonlocked;
146extern tlb_flush_user_t *tlb_flush_user;
147
148#endif /* !_MACHINE_TLB_H_ */
149