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/*
* Copyright (c) 2016, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include "test/nfit_test.h"
#include <linux/mm.h>
#include "../../../drivers/dax/dax-private.h"
phys_addr_t dax_pgoff_to_phys(struct dax_dev *dax_dev, pgoff_t pgoff,
unsigned long size)
{
struct resource *res;
phys_addr_t addr;
int i;
for (i = 0; i < dax_dev->num_resources; i++) {
res = &dax_dev->res[i];
addr = pgoff * PAGE_SIZE + res->start;
if (addr >= res->start && addr <= res->end)
break;
pgoff -= PHYS_PFN(resource_size(res));
}
if (i < dax_dev->num_resources) {
res = &dax_dev->res[i];
if (addr + size - 1 <= res->end) {
if (get_nfit_res(addr)) {
struct page *page;
if (dax_dev->region->align > PAGE_SIZE)
return -1;
page = vmalloc_to_page((void *)addr);
return PFN_PHYS(page_to_pfn(page));
} else
return addr;
}
}
return -1;
}
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