Lines Matching refs:pmem
29 #include "pmem.h"
33 static struct device *to_dev(struct pmem_device *pmem)
39 return pmem->bb.dev;
42 static struct nd_region *to_region(struct pmem_device *pmem)
44 return to_nd_region(to_dev(pmem)->parent);
47 static void hwpoison_clear(struct pmem_device *pmem,
52 /* only pmem in the linear map supports HWPoison */
53 if (is_vmalloc_addr(pmem->virt_addr))
71 static blk_status_t pmem_clear_poison(struct pmem_device *pmem,
74 struct device *dev = to_dev(pmem);
79 sector = (offset - pmem->data_offset) / 512;
81 cleared = nvdimm_clear_poison(dev, pmem->phys_addr + offset, len);
85 hwpoison_clear(pmem, pmem->phys_addr + offset, cleared);
90 badblocks_clear(&pmem->bb, sector, cleared);
91 if (pmem->bb_state)
92 sysfs_notify_dirent(pmem->bb_state);
95 arch_invalidate_pmem(pmem->virt_addr + offset, len);
140 static blk_status_t pmem_do_read(struct pmem_device *pmem,
145 phys_addr_t pmem_off = sector * 512 + pmem->data_offset;
146 void *pmem_addr = pmem->virt_addr + pmem_off;
148 if (unlikely(is_bad_pmem(&pmem->bb, sector, len)))
156 static blk_status_t pmem_do_write(struct pmem_device *pmem,
162 phys_addr_t pmem_off = sector * 512 + pmem->data_offset;
163 void *pmem_addr = pmem->virt_addr + pmem_off;
165 if (unlikely(is_bad_pmem(&pmem->bb, sector, len)))
185 rc = pmem_clear_poison(pmem, pmem_off, len);
200 struct pmem_device *pmem = bio->bi_disk->private_data;
201 struct nd_region *nd_region = to_region(pmem);
211 rc = pmem_do_write(pmem, bvec.bv_page, bvec.bv_offset,
214 rc = pmem_do_read(pmem, bvec.bv_page, bvec.bv_offset,
237 struct pmem_device *pmem = bdev->bd_disk->private_data;
241 rc = pmem_do_write(pmem, page, 0, sector, thp_size(page));
243 rc = pmem_do_read(pmem, page, 0, sector, thp_size(page));
256 /* see "strong" declaration in tools/testing/nvdimm/pmem-dax.c */
257 __weak long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
260 resource_size_t offset = PFN_PHYS(pgoff) + pmem->data_offset;
262 if (unlikely(is_bad_pmem(&pmem->bb, PFN_PHYS(pgoff) / 512,
267 *kaddr = pmem->virt_addr + offset;
269 *pfn = phys_to_pfn_t(pmem->phys_addr + offset, pmem->pfn_flags);
275 if (unlikely(pmem->bb.count))
277 return PHYS_PFN(pmem->size - pmem->pfn_pad - offset);
289 struct pmem_device *pmem = dax_get_private(dax_dev);
291 return blk_status_to_errno(pmem_do_write(pmem, ZERO_PAGE(0), 0,
299 struct pmem_device *pmem = dax_get_private(dax_dev);
301 return __pmem_direct_access(pmem, pgoff, nr_pages, kaddr, pfn);
358 struct pmem_device *pmem = __pmem;
360 kill_dax(pmem->dax_dev);
361 put_dax(pmem->dax_dev);
362 del_gendisk(pmem->disk);
363 put_disk(pmem->disk);
382 struct pmem_device *pmem;
390 pmem = devm_kzalloc(dev, sizeof(*pmem), GFP_KERNEL);
391 if (!pmem)
401 rc = nvdimm_setup_pfn(nd_pfn, &pmem->pgmap);
409 dev_set_drvdata(dev, pmem);
410 pmem->phys_addr = res->start;
411 pmem->size = resource_size(res);
428 pmem->pfn_flags = PFN_DEV;
429 pmem->pgmap.ref = &q->q_usage_counter;
431 pmem->pgmap.type = MEMORY_DEVICE_FS_DAX;
432 pmem->pgmap.ops = &fsdax_pagemap_ops;
433 addr = devm_memremap_pages(dev, &pmem->pgmap);
435 pmem->data_offset = le64_to_cpu(pfn_sb->dataoff);
436 pmem->pfn_pad = resource_size(res) -
437 range_len(&pmem->pgmap.range);
438 pmem->pfn_flags |= PFN_MAP;
439 bb_range = pmem->pgmap.range;
440 bb_range.start += pmem->data_offset;
442 pmem->pgmap.range.start = res->start;
443 pmem->pgmap.range.end = res->end;
444 pmem->pgmap.nr_range = 1;
445 pmem->pgmap.type = MEMORY_DEVICE_FS_DAX;
446 pmem->pgmap.ops = &fsdax_pagemap_ops;
447 addr = devm_memremap_pages(dev, &pmem->pgmap);
448 pmem->pfn_flags |= PFN_MAP;
449 bb_range = pmem->pgmap.range;
451 addr = devm_memremap(dev, pmem->phys_addr,
452 pmem->size, ARCH_MEMREMAP_PMEM);
454 &pmem->pgmap))
462 pmem->virt_addr = addr;
469 if (pmem->pfn_flags & PFN_MAP)
475 pmem->disk = disk;
480 disk->private_data = pmem;
482 set_capacity(disk, (pmem->size - pmem->pfn_pad - pmem->data_offset)
484 if (devm_init_badblocks(dev, &pmem->bb))
486 nvdimm_badblocks_populate(nd_region, &pmem->bb, &bb_range);
487 disk->bb = &pmem->bb;
491 dax_dev = alloc_dax(pmem, disk->disk_name, &pmem_dax_ops, flags);
497 pmem->dax_dev = dax_dev;
502 if (devm_add_action_or_reset(dev, pmem_release_disk, pmem))
507 pmem->bb_state = sysfs_get_dirent(disk_to_dev(disk)->kobj.sd,
509 if (!pmem->bb_state)
543 * For the first case consider namespace as a raw pmem namespace
569 struct pmem_device *pmem = dev_get_drvdata(dev);
578 sysfs_put(pmem->bb_state);
579 pmem->bb_state = NULL;
613 struct pmem_device *pmem = dev_get_drvdata(dev);
615 nd_region = to_region(pmem);
616 bb = &pmem->bb;
617 bb_state = pmem->bb_state;
624 offset = pmem->data_offset +
641 MODULE_ALIAS("pmem");