| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (c) 2016, Intel Corporation. |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | { |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 12 | struct resource *res = &dev_dax->region->res; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 13 | phys_addr_t addr; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 14 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 15 | addr = pgoff * PAGE_SIZE + res->start; |
| 16 | if (addr >= res->start && addr <= res->end) { |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | } |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 30 | return -1; |
| 31 | } |