// 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;
}