1 /*
2 * Copyright (c) 2015-2019 François Tigeot <ftigeot@wolfpond.org>
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 unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. 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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef _ASM_CACHEFLUSH_H_
28 #define _ASM_CACHEFLUSH_H_
29
30 #include <asm/special_insns.h>
31
32 #include <vm/pmap.h>
33 #include <vm/vm_page.h>
34
35 static inline int
set_memory_uc(unsigned long addr,int numpages)36 set_memory_uc(unsigned long addr, int numpages)
37 {
38 pmap_change_attr(addr, numpages, PAT_UNCACHED);
39 return 0;
40 }
41
set_memory_wc(unsigned long vaddr,int numpages)42 static inline int set_memory_wc(unsigned long vaddr, int numpages)
43 {
44 pmap_change_attr(vaddr, numpages, PAT_WRITE_COMBINING);
45 return 0;
46 }
47
set_memory_wb(unsigned long vaddr,int numpages)48 static inline int set_memory_wb(unsigned long vaddr, int numpages)
49 {
50 pmap_change_attr(vaddr, numpages, PAT_WRITE_BACK);
51 return 0;
52 }
53
set_pages_uc(struct page * page,int num_pages)54 static inline int set_pages_uc(struct page *page, int num_pages)
55 {
56 struct vm_page *p = (struct vm_page *)page;
57
58 pmap_change_attr(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(p)),
59 num_pages, PAT_UNCACHED);
60
61 return 0;
62 }
63
set_pages_wb(struct page * page,int num_pages)64 static inline int set_pages_wb(struct page *page, int num_pages)
65 {
66 struct vm_page *p = (struct vm_page *)page;
67
68 pmap_change_attr(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(p)),
69 num_pages, PAT_WRITE_BACK);
70
71 return 0;
72 }
73
74 static inline int
set_pages_array_uc(struct page ** pages,int addrinarray)75 set_pages_array_uc(struct page **pages, int addrinarray)
76 {
77 for (int i = 0; i < addrinarray; i++)
78 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_UNCACHEABLE);
79
80 return 0;
81 }
82
83 static inline int
set_pages_array_wb(struct page ** pages,int addrinarray)84 set_pages_array_wb(struct page **pages, int addrinarray)
85 {
86 for (int i = 0; i < addrinarray; i++)
87 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_WRITE_BACK);
88
89 return 0;
90 }
91
92 static inline int
set_pages_array_wc(struct page ** pages,int addrinarray)93 set_pages_array_wc(struct page **pages, int addrinarray)
94 {
95 for (int i = 0; i < addrinarray; i++)
96 pmap_page_set_memattr((struct vm_page *)pages[i], VM_MEMATTR_WRITE_COMBINING);
97
98 return 0;
99 }
100
101 #endif /* _ASM_CACHEFLUSH_H_ */
102