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}

 
 1/*
 2 * Copyright (c) 2016, Intel Corporation.
 3 *
 4 * This program is free software; you can redistribute it and/or modify it
 5 * under the terms and conditions of the GNU General Public License,
 6 * version 2, as published by the Free Software Foundation.
 7 *
 8 * This program is distributed in the hope it will be useful, but WITHOUT
 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
11 * more details.
12 */
13#include "test/nfit_test.h"
14#include <linux/mm.h>
15#include "../../../drivers/dax/dax-private.h"
16
17phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff,
18		unsigned long size)
19{
20	struct resource *res;
21	phys_addr_t addr;
22	int i;
23
24	for (i = 0; i < dev_dax->num_resources; i++) {
25		res = &dev_dax->res[i];
26		addr = pgoff * PAGE_SIZE + res->start;
27		if (addr >= res->start && addr <= res->end)
28			break;
29		pgoff -= PHYS_PFN(resource_size(res));
30	}
31
32	if (i < dev_dax->num_resources) {
33		res = &dev_dax->res[i];
34		if (addr + size - 1 <= res->end) {
35			if (get_nfit_res(addr)) {
36				struct page *page;
37
38				if (dev_dax->region->align > PAGE_SIZE)
39					return -1;
40
41				page = vmalloc_to_page((void *)addr);
42				return PFN_PHYS(page_to_pfn(page));
43			} else
44				return addr;
45		}
 
46	}
47
48	return -1;
49}