blob: fb342a8c98d302d9efcf4d65cffe430885d90b26 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016, Intel Corporation.
*/
#include "test/nfit_test.h"
#include <linux/mm.h>
#include "../../../drivers/dax/dax-private.h"
phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff,
unsigned long size)
{
int i;
for (i = 0; i < dev_dax->nr_range; i++) {
struct dev_dax_range *dax_range = &dev_dax->ranges[i];
struct range *range = &dax_range->range;
unsigned long long pgoff_end;
phys_addr_t addr;
pgoff_end = dax_range->pgoff + PHYS_PFN(range_len(range)) - 1;
if (pgoff < dax_range->pgoff || pgoff > pgoff_end)
continue;
addr = PFN_PHYS(pgoff - dax_range->pgoff) + range->start;
if (addr + size - 1 <= range->end) {
if (get_nfit_res(addr)) {
struct page *page;
if (dev_dax->region->align > PAGE_SIZE)
return -1;
page = vmalloc_to_page((void *)addr);
return PFN_PHYS(page_to_pfn(page));
}
return addr;
}
break;
}
return -1;
}
|
