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/* SPDX-License-Identifier: GPL-2.0 */
/**
* Copyright(c) 2016-20 Intel Corporation.
*
* Contains the software defined data structures for enclaves.
*/
#ifndef _X86_ENCL_H
#define _X86_ENCL_H
#include <linux/cpumask.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/mm_types.h>
#include <linux/mmu_notifier.h>
#include <linux/mutex.h>
#include <linux/notifier.h>
#include <linux/srcu.h>
#include <linux/workqueue.h>
#include <linux/xarray.h>
#include "sgx.h"
struct sgx_encl_page {
unsigned long desc;
unsigned long vm_max_prot_bits;
struct sgx_epc_page *epc_page;
struct sgx_encl *encl;
};
enum sgx_encl_flags {
SGX_ENCL_IOCTL = BIT(0),
SGX_ENCL_DEBUG = BIT(1),
SGX_ENCL_CREATED = BIT(2),
};
struct sgx_encl {
unsigned long base;
unsigned long size;
unsigned long flags;
unsigned int page_cnt;
unsigned int secs_child_cnt;
struct mutex lock;
struct xarray page_array;
struct sgx_encl_page secs;
};
extern const struct vm_operations_struct sgx_vm_ops;
static inline int sgx_encl_find(struct mm_struct *mm, unsigned long addr,
struct vm_area_struct **vma)
{
struct vm_area_struct *result;
result = find_vma(mm, addr);
if (!result || result->vm_ops != &sgx_vm_ops || addr < result->vm_start)
return -EINVAL;
*vma = result;
return 0;
}
int sgx_encl_may_map(struct sgx_encl *encl, unsigned long start,
unsigned long end, unsigned long vm_flags);
#endif /* _X86_ENCL_H */
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