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
9 phys_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 }
40
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