| /* |
| * 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; |
| } |