mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 21:02:19 +00:00
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
|
|
* 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 dev_dax *dev_dax, pgoff_t pgoff,
|
|
unsigned long size)
|
|
{
|
|
struct resource *res;
|
|
phys_addr_t addr;
|
|
int i;
|
|
|
|
for (i = 0; i < dev_dax->num_resources; i++) {
|
|
res = &dev_dax->res[i];
|
|
addr = pgoff * PAGE_SIZE + res->start;
|
|
if (addr >= res->start && addr <= res->end)
|
|
break;
|
|
pgoff -= PHYS_PFN(resource_size(res));
|
|
}
|
|
|
|
if (i < dev_dax->num_resources) {
|
|
res = &dev_dax->res[i];
|
|
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;
|
|
}
|