pmap_coldfire.h revision 1.3 
1/*	$NetBSD: pmap_coldfire.h,v 1.3 2020/08/07 07:19:45 skrll Exp $	*/
2/*-
3 * Copyright (c) 2013 The NetBSD Foundation, Inc.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to The NetBSD Foundation
7 * by Matt Thomas of 3am Software Foundry.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef _M68K_PMAP_COLDFIRE_H_
32#define M68K_PMAP_COLDFIRE_H_
33
34#ifdef _LOCORE
35#error use assym.h instead
36#endif
37
38#if defined(_MODULE)
39#error this file should not be included by loadable kernel modules
40#endif
41
42#ifdef _KERNEL_OPT
43#include "opt_pmap.h"
44#endif
45
46#include <sys/cpu.h>
47#include <sys/kcore.h>
48#include <uvm/uvm_page.h>
49#ifdef __PMAP_PRIVATE
50#include <powerpc/booke/cpuvar.h>
51#include <powerpc/cpuset.h>
52#endif
53
54#define	PMAP_NEED_PROCWR
55
56#include <uvm/pmap/vmpagemd.h>
57
58#include <m68k/pte_coldfire.h>
59
60#define	NBSEG		(NBPG*NPTEPG)
61#define	SEGSHIFT	(PGSHIFT + PGSHIFT - 2)
62#define SEGOFSET	((1 << SEGSHIFT) - 1)
63#define PMAP_SEGTABSIZE	(1 << (32 - SEGSHIFT))
64#define	NPTEPG		(NBPG >> 2)
65
66#define	KERNEL_PID	0
67
68#define PMAP_TLB_MAX			  1
69#define	PMAP_TLB_NUM_PIDS		256
70#define	PMAP_INVALID_SEGTAB_ADDRESS	((pmap_segtab_t *)0xfeeddead)
71
72#define	pmap_phys_address(x)		(x)
73
74void	pmap_procwr(struct proc *, vaddr_t, size_t);
75#define	PMAP_NEED_PROCWR
76
77#ifdef __PMAP_PRIVATE
78struct vm_page *
79	pmap_md_alloc_poolpage(int flags);
80vaddr_t	pmap_md_map_poolpage(paddr_t, vsize_t);
81void	pmap_md_unmap_poolpage(vaddr_t, vsize_t);
82bool	pmap_md_direct_mapped_vaddr_p(vaddr_t);
83bool	pmap_md_io_vaddr_p(vaddr_t);
84paddr_t	pmap_md_direct_mapped_vaddr_to_paddr(vaddr_t);
85vaddr_t	pmap_md_direct_map_paddr(paddr_t);
86void	pmap_md_init(void);
87
88bool	pmap_md_tlb_check_entry(void *, vaddr_t, tlb_asid_t, pt_entry_t);
89
90#ifdef PMAP_MINIMALTLB
91vaddr_t	pmap_kvptefill(vaddr_t, vaddr_t, pt_entry_t);
92#endif
93#endif
94
95void	pmap_md_page_syncicache(struct vm_page *, const kcpuset_t *);
96vaddr_t	pmap_bootstrap(vaddr_t, vaddr_t, phys_ram_seg_t *, size_t);
97bool	pmap_extract(struct pmap *, vaddr_t, paddr_t *);
98
99static inline paddr_t vtophys(vaddr_t);
100
101static inline paddr_t
102vtophys(vaddr_t va)
103{
104	paddr_t pa;
105
106	if (pmap_extract(pmap_kernel(), va, &pa))
107		return pa;
108	KASSERT(0);
109	return (paddr_t) -1;
110}
111
112#ifdef __PMAP_PRIVATE
113/*
114 * Virtual Cache Alias helper routines.  Not a problem for Booke CPUs.
115 */
116static inline bool
117pmap_md_vca_add(struct vm_page *pg, vaddr_t va, pt_entry_t *nptep)
118{
119	return false;
120}
121
122static inline void
123pmap_md_vca_remove(struct vm_page *pg, vaddr_t va)
124{
125
126}
127
128static inline void
129pmap_md_vca_clean(struct vm_page *pg, vaddr_t va, int op)
130{
131}
132
133static inline size_t
134pmap_md_tlb_asid_max(void)
135{
136	return PMAP_TLB_NUM_PIDS - 1;
137}
138
139static inline void
140pmap_md_xtab_activate(struct pmap *pm, struct lwp *l)
141{
142
143	/* nothing */
144}
145
146static inline void
147pmap_md_xtab_deactivate(struct pmap *pm)
148{
149
150	/* nothing */
151}
152#endif
153
154#define	POOL_VTOPHYS(va)	((paddr_t)(vaddr_t)(va))
155#define	POOL_PHYSTOV(pa)	((vaddr_t)(paddr_t)(pa))
156
157#include <uvm/pmap/pmap.h>
158
159#endif /* !_M68K_PMAP_COLDFIRE_H_ */
160