/* * 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; }