1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2016, Intel Corporation. 4 */ 5 #include "test/nfit_test.h" 6 #include <linux/mm.h> 7 #include "../../../drivers/dax/dax-private.h" 8 9 phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff, 10 unsigned long size) 11 { 12 struct resource *res = &dev_dax->region->res; 13 phys_addr_t addr; 14 15 addr = pgoff * PAGE_SIZE + res->start; 16 if (addr >= res->start && addr <= res->end) { 17 if (addr + size - 1 <= res->end) { 18 if (get_nfit_res(addr)) { 19 struct page *page; 20 21 if (dev_dax->region->align > PAGE_SIZE) 22 return -1; 23 24 page = vmalloc_to_page((void *)addr); 25 return PFN_PHYS(page_to_pfn(page)); 26 } else 27 return addr; 28 } 29 } 30 return -1; 31 } 32