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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __ASM_GENERIC_MMAN_COMMON_H
#define __ASM_GENERIC_MMAN_COMMON_H

/*
 Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd.
 Based on: asm-xxx/mman.h
*/

#define PROT_READ       0x1             /* page can be read */
#define PROT_WRITE      0x2             /* page can be written */
#define PROT_EXEC       0x4             /* page can be executed */
#define PROT_SEM        0x8             /* page may be used for atomic ops */
#define PROT_NONE       0x0             /* page can not be accessed */
#define PROT_GROWSDOWN  0x01000000      /* mprotect flag: extend change to start of growsdown vma */
#define PROT_GROWSUP    0x02000000      /* mprotect flag: extend change to end of growsup vma */

/* 0x01 - 0x03 are defined in linux/mman.h */
#define MAP_TYPE        0x0f            /* Mask for type of mapping */
#define MAP_FIXED       0x10            /* Interpret addr exactly */
#define MAP_ANONYMOUS   0x20            /* don't use a file */

/* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */
#define MAP_POPULATE            0x008000        /* populate (prefault) pagetables */
#define MAP_NONBLOCK            0x010000        /* do not block on IO */
#define MAP_STACK               0x020000        /* give out an address that is best suited for process/thread stacks */
#define MAP_HUGETLB             0x040000        /* create a huge page mapping */
#define MAP_SYNC                0x080000 /* perform synchronous page faults for the mapping */
#define MAP_FIXED_NOREPLACE     0x100000        /* MAP_FIXED which doesn't unmap underlying mapping */

#define MAP_UNINITIALIZED 0x4000000     /* For anonymous mmap, memory could be
                                         * uninitialized */

/*
 * Flags for mlock
 */
#define MLOCK_ONFAULT   0x01            /* Lock pages in range after they are faulted in, do not prefault */

#define MS_ASYNC        1               /* sync memory asynchronously */
#define MS_INVALIDATE   2               /* invalidate the caches */
#define MS_SYNC         4               /* synchronous memory sync */

#define MADV_NORMAL     0               /* no further special treatment */
#define MADV_RANDOM     1               /* expect random page references */
#define MADV_SEQUENTIAL 2               /* expect sequential page references */
#define MADV_WILLNEED   3               /* will need these pages */
#define MADV_DONTNEED   4               /* don't need these pages */

/* common parameters: try to keep these consistent across architectures */
#define MADV_FREE       8               /* free pages only if memory pressure */
#define MADV_REMOVE     9               /* remove these pages & resources */
#define MADV_DONTFORK   10              /* don't inherit across fork */
#define MADV_DOFORK     11              /* do inherit across fork */
#define MADV_HWPOISON   100             /* poison a page for testing */
#define MADV_SOFT_OFFLINE 101           /* soft offline page for testing */

#define MADV_MERGEABLE   12             /* KSM may merge identical pages */
#define MADV_UNMERGEABLE 13             /* KSM may not merge identical pages */

#define MADV_HUGEPAGE   14              /* Worth backing with hugepages */
#define MADV_NOHUGEPAGE 15              /* Not worth backing with hugepages */

#define MADV_DONTDUMP   16              /* Explicity exclude from the core dump,
                                           overrides the coredump filter bits */
#define MADV_DODUMP     17              /* Clear the MADV_DONTDUMP flag */

#define MADV_WIPEONFORK 18              /* Zero memory on fork, child only */
#define MADV_KEEPONFORK 19              /* Undo MADV_WIPEONFORK */

/* compatibility flags */
#define MAP_FILE        0

#define PKEY_DISABLE_ACCESS     0x1
#define PKEY_DISABLE_WRITE      0x2
#define PKEY_ACCESS_MASK        (PKEY_DISABLE_ACCESS |\
                                 PKEY_DISABLE_WRITE)

#endif /* __ASM_GENERIC_MMAN_COMMON_H */