| /* | |
| * 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; | |
| } |