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	int i;
13
14	for (i = 0; i < dev_dax->nr_range; i++) {
15		struct dev_dax_range *dax_range = &dev_dax->ranges[i];
16		struct range *range = &dax_range->range;
17		unsigned long long pgoff_end;
18		phys_addr_t addr;
19
20		pgoff_end = dax_range->pgoff + PHYS_PFN(range_len(range)) - 1;
21		if (pgoff < dax_range->pgoff || pgoff > pgoff_end)
22			continue;
23		addr = PFN_PHYS(pgoff - dax_range->pgoff) + range->start;
24		if (addr + size - 1 <= range->end) {
25			if (get_nfit_res(addr)) {
26				struct page *page;
27
28				if (dev_dax->region->align > PAGE_SIZE)
29					return -1;
30
31				page = vmalloc_to_page((void *)addr);
32				return PFN_PHYS(page_to_pfn(page));
33			}
34			return addr;
35		}
36		break;
37	}
38	return -1;
39}