1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASMS390_SET_MEMORY_H
3 #define _ASMS390_SET_MEMORY_H
4
5 #include <linux/mutex.h>
6
7 extern struct mutex cpa_mutex;
8
9 enum {
10 _SET_MEMORY_RO_BIT,
11 _SET_MEMORY_RW_BIT,
12 _SET_MEMORY_NX_BIT,
13 _SET_MEMORY_X_BIT,
14 _SET_MEMORY_4K_BIT,
15 _SET_MEMORY_INV_BIT,
16 _SET_MEMORY_DEF_BIT,
17 };
18
19 #define SET_MEMORY_RO BIT(_SET_MEMORY_RO_BIT)
20 #define SET_MEMORY_RW BIT(_SET_MEMORY_RW_BIT)
21 #define SET_MEMORY_NX BIT(_SET_MEMORY_NX_BIT)
22 #define SET_MEMORY_X BIT(_SET_MEMORY_X_BIT)
23 #define SET_MEMORY_4K BIT(_SET_MEMORY_4K_BIT)
24 #define SET_MEMORY_INV BIT(_SET_MEMORY_INV_BIT)
25 #define SET_MEMORY_DEF BIT(_SET_MEMORY_DEF_BIT)
26
27 int __set_memory(unsigned long addr, unsigned long numpages, unsigned long flags);
28
29 #define set_memory_rox set_memory_rox
30
31 /*
32 * Generate two variants of each set_memory() function:
33 *
34 * set_memory_yy(unsigned long addr, int numpages);
35 * __set_memory_yy(void *start, void *end);
36 *
37 * The second variant exists for both convenience to avoid the usual
38 * (unsigned long) casts, but unlike the first variant it can also be used
39 * for areas larger than 8TB, which may happen at memory initialization.
40 */
41 #define __SET_MEMORY_FUNC(fname, flags) \
42 static inline int fname(unsigned long addr, int numpages) \
43 { \
44 return __set_memory(addr, numpages, (flags)); \
45 } \
46 \
47 static inline int __##fname(void *start, void *end) \
48 { \
49 unsigned long numpages; \
50 \
51 numpages = (end - start) >> PAGE_SHIFT; \
52 return __set_memory((unsigned long)start, numpages, (flags)); \
53 }
54
55 __SET_MEMORY_FUNC(set_memory_ro, SET_MEMORY_RO)
56 __SET_MEMORY_FUNC(set_memory_rw, SET_MEMORY_RW)
57 __SET_MEMORY_FUNC(set_memory_nx, SET_MEMORY_NX)
58 __SET_MEMORY_FUNC(set_memory_x, SET_MEMORY_X)
59 __SET_MEMORY_FUNC(set_memory_rox, SET_MEMORY_RO | SET_MEMORY_X)
60 __SET_MEMORY_FUNC(set_memory_rwnx, SET_MEMORY_RW | SET_MEMORY_NX)
61 __SET_MEMORY_FUNC(set_memory_4k, SET_MEMORY_4K)
62
63 int set_direct_map_invalid_noflush(struct page *page);
64 int set_direct_map_default_noflush(struct page *page);
65
66 #endif
67
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