| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2016, Intel Corporation. |
| */ |
| #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) |
| { |
| int i; |
| |
| for (i = 0; i < dev_dax->nr_range; i++) { |
| struct dev_dax_range *dax_range = &dev_dax->ranges[i]; |
| struct range *range = &dax_range->range; |
| unsigned long long pgoff_end; |
| phys_addr_t addr; |
| |
| pgoff_end = dax_range->pgoff + PHYS_PFN(range_len(range)) - 1; |
| if (pgoff < dax_range->pgoff || pgoff > pgoff_end) |
| continue; |
| addr = PFN_PHYS(pgoff - dax_range->pgoff) + range->start; |
| if (addr + size - 1 <= range->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)); |
| } |
| return addr; |
| } |
| break; |
| } |
| return -1; |
| } |
