| 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 | 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(resource: addr)) { |
| 26 | struct page *page; |
| 27 | |
| 28 | if (dev_dax->region->align > PAGE_SIZE) |
| 29 | return -1; |
| 30 | |
| 31 | page = vmalloc_to_page(addr: (void *)addr); |
| 32 | return PFN_PHYS(page_to_pfn(page)); |
| 33 | } |
| 34 | return addr; |
| 35 | } |
| 36 | break; |
| 37 | } |
| 38 | return -1; |
| 39 | } |
| 40 |