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39 lines
963 B
39 lines
963 B
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (c) 2016, Intel Corporation. |
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*/ |
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#include "test/nfit_test.h" |
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#include <linux/mm.h> |
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#include "../../../drivers/dax/dax-private.h" |
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phys_addr_t dax_pgoff_to_phys(struct dev_dax *dev_dax, pgoff_t pgoff, |
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unsigned long size) |
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{ |
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int i; |
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for (i = 0; i < dev_dax->nr_range; i++) { |
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struct dev_dax_range *dax_range = &dev_dax->ranges[i]; |
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struct range *range = &dax_range->range; |
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unsigned long long pgoff_end; |
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phys_addr_t addr; |
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pgoff_end = dax_range->pgoff + PHYS_PFN(range_len(range)) - 1; |
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if (pgoff < dax_range->pgoff || pgoff > pgoff_end) |
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continue; |
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addr = PFN_PHYS(pgoff - dax_range->pgoff) + range->start; |
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if (addr + size - 1 <= range->end) { |
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if (get_nfit_res(addr)) { |
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struct page *page; |
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if (dev_dax->region->align > PAGE_SIZE) |
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return -1; |
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page = vmalloc_to_page((void *)addr); |
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return PFN_PHYS(page_to_pfn(page)); |
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} |
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return addr; |
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} |
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break; |
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} |
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return -1; |
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}
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