32 lines
716 B
C
32 lines
716 B
C
|
// 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)
|
||
|
|
{
|
||
|
|
struct resource *res = &dev_dax->region->res;
|
||
|
|
phys_addr_t addr;
|
||
|
|
|
||
|
|
addr = pgoff * PAGE_SIZE + res->start;
|
||
|
|
if (addr >= res->start && addr <= res->end) {
|
||
|
|
if (addr + size - 1 <= res->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));
|
||
|
|
} else
|
||
|
|
return addr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return -1;
|
||
|
|
}
|