32 lines
716 B
C
32 lines
716 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2016, Intel Corporation.
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*/
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#include "test/nfit_test.h"
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#include <linux/mm.h>
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#include "../../../drivers/dax/dax-private.h"
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phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff,
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unsigned long size)
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{
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struct resource *res = &dev_dax->region->res;
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phys_addr_t addr;
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addr = pgoff * PAGE_SIZE + res->start;
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if (addr >= res->start && addr <= res->end) {
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if (addr + size - 1 <= res->end) {
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if (get_nfit_res(addr)) {
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struct page *page;
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if (dev_dax->region->align > PAGE_SIZE)
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return -1;
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page = vmalloc_to_page((void *)addr);
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return PFN_PHYS(page_to_pfn(page));
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} else
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return addr;
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}
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}
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return -1;
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}
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