1 /**************************************************************************
2  *
3  * Copyright (c) 2018 Advanced Micro Devices, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 /*
28  * Authors: Huang Rui <ray.huang@amd.com>
29  */
30 
31 #ifndef TTM_SET_MEMORY
32 #define TTM_SET_MEMORY
33 
34 #include <linux/mm.h>
35 
36 #ifdef CONFIG_X86
37 
38 #include <asm/set_memory.h>
39 
40 static inline int ttm_set_pages_array_wb(struct page **pages, int addrinarray)
41 {
42 	return set_pages_array_wb(pages, addrinarray);
43 }
44 
45 static inline int ttm_set_pages_array_wc(struct page **pages, int addrinarray)
46 {
47 	return set_pages_array_wc(pages, addrinarray);
48 }
49 
50 static inline int ttm_set_pages_array_uc(struct page **pages, int addrinarray)
51 {
52 	return set_pages_array_uc(pages, addrinarray);
53 }
54 
55 static inline int ttm_set_pages_wb(struct page *page, int numpages)
56 {
57 	return set_pages_wb(page, numpages);
58 }
59 
60 static inline int ttm_set_pages_wc(struct page *page, int numpages)
61 {
62 	unsigned long addr = (unsigned long)page_address(page);
63 
64 	return set_memory_wc(addr, numpages);
65 }
66 
67 static inline int ttm_set_pages_uc(struct page *page, int numpages)
68 {
69 	return set_pages_uc(page, numpages);
70 }
71 
72 #else /* for CONFIG_X86 */
73 
74 #if IS_ENABLED(CONFIG_AGP)
75 
76 #include <asm/agp.h>
77 
78 static inline int ttm_set_pages_array_wb(struct page **pages, int addrinarray)
79 {
80 	int i;
81 
82 	for (i = 0; i < addrinarray; i++)
83 		unmap_page_from_agp(pages[i]);
84 	return 0;
85 }
86 
87 static inline int ttm_set_pages_array_wc(struct page **pages, int addrinarray)
88 {
89 	int i;
90 
91 	for (i = 0; i < addrinarray; i++)
92 		map_page_into_agp(pages[i]);
93 	return 0;
94 }
95 
96 static inline int ttm_set_pages_array_uc(struct page **pages, int addrinarray)
97 {
98 	int i;
99 
100 	for (i = 0; i < addrinarray; i++)
101 		map_page_into_agp(pages[i]);
102 	return 0;
103 }
104 
105 static inline int ttm_set_pages_wb(struct page *page, int numpages)
106 {
107 	int i;
108 
109 	for (i = 0; i < numpages; i++)
110 		unmap_page_from_agp(page++);
111 	return 0;
112 }
113 
114 #else /* for CONFIG_AGP */
115 
116 static inline int ttm_set_pages_array_wb(struct page **pages, int addrinarray)
117 {
118 	return 0;
119 }
120 
121 static inline int ttm_set_pages_array_wc(struct page **pages, int addrinarray)
122 {
123 	return 0;
124 }
125 
126 static inline int ttm_set_pages_array_uc(struct page **pages, int addrinarray)
127 {
128 	return 0;
129 }
130 
131 static inline int ttm_set_pages_wb(struct page *page, int numpages)
132 {
133 	return 0;
134 }
135 
136 #endif /* for CONFIG_AGP */
137 
138 static inline int ttm_set_pages_wc(struct page *page, int numpages)
139 {
140 	return 0;
141 }
142 
143 static inline int ttm_set_pages_uc(struct page *page, int numpages)
144 {
145 	return 0;
146 }
147 
148 #endif /* for CONFIG_X86 */
149 
150 #endif
151