From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/nvdimm/pmem.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 drivers/nvdimm/pmem.h (limited to 'drivers/nvdimm/pmem.h') diff --git a/drivers/nvdimm/pmem.h b/drivers/nvdimm/pmem.h new file mode 100644 index 000000000..392b0b38a --- /dev/null +++ b/drivers/nvdimm/pmem.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __NVDIMM_PMEM_H__ +#define __NVDIMM_PMEM_H__ +#include +#include +#include +#include +#include +#include + +enum dax_access_mode; + +/* this definition is in it's own header for tools/testing/nvdimm to consume */ +struct pmem_device { + /* One contiguous memory region per device */ + phys_addr_t phys_addr; + /* when non-zero this device is hosting a 'pfn' instance */ + phys_addr_t data_offset; + u64 pfn_flags; + void *virt_addr; + /* immutable base size of the namespace */ + size_t size; + /* trim size when namespace capacity has been section aligned */ + u32 pfn_pad; + struct kernfs_node *bb_state; + struct badblocks bb; + struct dax_device *dax_dev; + struct gendisk *disk; + struct dev_pagemap pgmap; +}; + +long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff, + long nr_pages, enum dax_access_mode mode, void **kaddr, + pfn_t *pfn); + +#ifdef CONFIG_MEMORY_FAILURE +static inline bool test_and_clear_pmem_poison(struct page *page) +{ + return TestClearPageHWPoison(page); +} +#else +static inline bool test_and_clear_pmem_poison(struct page *page) +{ + return false; +} +#endif +#endif /* __NVDIMM_PMEM_H__ */ -- cgit v1.2.3