/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 */
#ifndef _ASM_POWERPC_MMAN_H
#define _ASM_POWERPC_MMAN_H

#include <uapi/asm/mman.h>

#if defined(CONFIG_PPC64) && !defined(BUILD_VDSO)

#include <asm/cputable.h>
#include <linux/mm.h>
#include <linux/pkeys.h>
#include <asm/cpu_has_feature.h>
#include <asm/firmware.h>

static inline vm_flags_t arch_calc_vm_prot_bits(unsigned long prot,
                unsigned long pkey)
{
#ifdef CONFIG_PPC_MEM_KEYS
        return (((prot & PROT_SAO) ? VM_SAO : 0) | pkey_to_vmflag_bits(pkey));
#else
        return ((prot & PROT_SAO) ? VM_SAO : 0);
#endif
}
#define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)

static inline bool arch_validate_prot(unsigned long prot, unsigned long addr)
{
        if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
                return false;
        if (prot & PROT_SAO) {
                if (!cpu_has_feature(CPU_FTR_SAO))
                        return false;
                if (firmware_has_feature(FW_FEATURE_LPAR) &&
                    !IS_ENABLED(CONFIG_PPC_PROT_SAO_LPAR))
                        return false;
        }
        return true;
}
#define arch_validate_prot arch_validate_prot

#endif /* CONFIG_PPC64 */
#endif  /* _ASM_POWERPC_MMAN_H */