/* 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 */
/*			0x10		   reserved for arch-specific use */
/*			0x20		   reserved for arch-specific use */
#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 */
/*
 * #ifdef CONFIG_RTOS_IDUMP
 * for glibc add a mmap attribute for get linkmap
 * CONFIG_RTOS_IDUMP kernel macro cannot be used in uapi
 * mman-common.h will used in the user-mode, the kernel macro
 * does not takee effect in the user mode, so CONFIG_RTOS_IDUMP
 * need to be commented out
 */
#define PROT_ALWAYSDUMP 0x80000000
/* #endif CONFIG_RTOS_IDUMP */

/* 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 */
/*
 * #ifdef CONFIG_RTOS_MEM_HUGEPAGE_SHARED_LIB
 * If we add macro in uapi files, userspace project will not find
 * MAP_RTOS_HUGEPAGE_SHARED_LIB because this macro is not defined.
 * Add this comments for notice.
 */
#define MAP_RTOS_HUGEPAGE_SHARED_LIB	0x2000000 /* only used for RTOS hugeso feature */
/* #endif */
#define MAP_SVSP		0x400000

#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 */

#define MADV_COLD	20		/* deactivate these pages */
#define MADV_PAGEOUT	21		/* reclaim these pages */

/*
 * CONFIG_RTOS_MEM_MADV_COMMIT
 * Increase Committed_AS if corresponding virtual memory area has been decommited,
 * allow it from read and write.
 */
#define MADV_COMMIT	50

/* Don't need these pages,
 * subtract corresponding memsize from Committed_AS,
 * protect it from read and write.
 */
#define MADV_DECOMMIT	51
/* end */

#define MADV_SWAPFLAG   203 /* memory swap flag, for memory to be swap out */
#define MADV_SWAPFLAG_REMOVE 204

/*
 * #ifdef CONFIG_EULEROS_VIRTUAL
 * add new madvise flag MADV_SWAPABLE.
 */
#define MADV_SWAPABLE   30    /* Advise memory swapable */
#define MADV_UNSWAPABLE   31  /* Advise memory can not swapable */
/* #endif CONFIG_EULEROS_VIRTUAL */

/* 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 */