1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (c) 2016, Intel Corporation.
 4 */
 5#include "test/nfit_test.h"
 6#include <linux/mm.h>
 7#include "../../../drivers/dax/dax-private.h"
 8
 9phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff,
10		unsigned long size)
11{
12	struct resource *res = &dev_dax->region->res;
13	phys_addr_t addr;
14
15	addr = pgoff * PAGE_SIZE + res->start;
16	if (addr >= res->start && addr <= res->end) {
17		if (addr + size - 1 <= res->end) {
18			if (get_nfit_res(addr)) {
19				struct page *page;
20
21				if (dev_dax->region->align > PAGE_SIZE)
22					return -1;
23
24				page = vmalloc_to_page((void *)addr);
25				return PFN_PHYS(page_to_pfn(page));
26			} else
27				return addr;
28		}
29	}
30	return -1;
31}