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 7extern struct mutex cpa_mutex; 8 9enum { 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 27int __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) \ 42static inline int fname(unsigned long addr, int numpages) \ 43{ \ 44 return __set_memory(addr, numpages, (flags)); \ 45} \ 46 \ 47static 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 63int set_direct_map_invalid_noflush(struct page *page); 64int set_direct_map_default_noflush(struct page *page); 65 66#endif 67