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 dax_pgoff_to_phys(struct dev_dax * dev_dax,pgoff_t pgoff,unsigned long size)9phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff, 10 unsigned long size) 11 { 12 int i; 13 14 for (i = 0; i < dev_dax->nr_range; i++) { 15 struct dev_dax_range *dax_range = &dev_dax->ranges[i]; 16 struct range *range = &dax_range->range; 17 unsigned long long pgoff_end; 18 phys_addr_t addr; 19 20 pgoff_end = dax_range->pgoff + PHYS_PFN(range_len(range)) - 1; 21 if (pgoff < dax_range->pgoff || pgoff > pgoff_end) 22 continue; 23 addr = PFN_PHYS(pgoff - dax_range->pgoff) + range->start; 24 if (addr + size - 1 <= range->end) { 25 if (get_nfit_res(addr)) { 26 struct page *page; 27 28 if (dev_dax->region->align > PAGE_SIZE) 29 return -1; 30 31 page = vmalloc_to_page((void *)addr); 32 return PFN_PHYS(page_to_pfn(page)); 33 } 34 return addr; 35 } 36 break; 37 } 38 return -1; 39 } 40