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21aa65bf82
All PFN_* pfn_t flags have been removed. Therefore there is no longer a need for the pfn_t type and all uses can be replaced with normal pfns. Link: https://lkml.kernel.org/r/bbedfa576c9822f8032494efbe43544628698b1f.1750323463.git-series.apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Balbir Singh <balbirs@nvidia.com> Cc: Björn Töpel <bjorn@kernel.org> Cc: Björn Töpel <bjorn@rivosinc.com> Cc: Chunyan Zhang <zhang.lyra@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Deepak Gupta <debug@rivosinc.com> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Inki Dae <m.szyprowski@samsung.com> Cc: John Groves <john@groves.net> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2014-2016, Intel Corporation.
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*/
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#include "test/nfit_test.h"
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#include <linux/blkdev.h>
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#include <linux/dax.h>
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#include <pmem.h>
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#include <nd.h>
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long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
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long nr_pages, enum dax_access_mode mode, void **kaddr,
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unsigned long *pfn)
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{
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resource_size_t offset = PFN_PHYS(pgoff) + pmem->data_offset;
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if (unlikely(is_bad_pmem(&pmem->bb, PFN_PHYS(pgoff) / 512,
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PFN_PHYS(nr_pages))))
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return -EIO;
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/*
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* Limit dax to a single page at a time given vmalloc()-backed
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* in the nfit_test case.
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*/
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if (get_nfit_res(pmem->phys_addr + offset)) {
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struct page *page;
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if (kaddr)
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*kaddr = pmem->virt_addr + offset;
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page = vmalloc_to_page(pmem->virt_addr + offset);
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if (pfn)
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*pfn = page_to_pfn(page);
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pr_debug_ratelimited("%s: pmem: %p pgoff: %#lx pfn: %#lx\n",
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__func__, pmem, pgoff, page_to_pfn(page));
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return 1;
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}
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if (kaddr)
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*kaddr = pmem->virt_addr + offset;
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if (pfn)
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*pfn = PHYS_PFN(pmem->phys_addr + offset);
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/*
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* If badblocks are present, limit known good range to the
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* requested range.
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*/
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if (unlikely(pmem->bb.count))
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return nr_pages;
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return PHYS_PFN(pmem->size - pmem->pfn_pad - offset);
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}
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