^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/sort.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/nd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "nd-core.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "pmem.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "pfn.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "nd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static void namespace_io_release(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct nd_namespace_io *nsio = to_nd_namespace_io(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) kfree(nsio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static void namespace_pmem_release(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) if (nspm->id >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ida_simple_remove(&nd_region->ns_ida, nspm->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) kfree(nspm->alt_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) kfree(nspm->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) kfree(nspm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static void namespace_blk_release(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (nsblk->id >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) ida_simple_remove(&nd_region->ns_ida, nsblk->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) kfree(nsblk->alt_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) kfree(nsblk->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) kfree(nsblk->res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) kfree(nsblk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static bool is_namespace_pmem(const struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static bool is_namespace_blk(const struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static bool is_namespace_io(const struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static int is_uuid_busy(struct device *dev, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u8 *uuid1 = data, *uuid2 = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) uuid2 = nspm->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) uuid2 = nsblk->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) } else if (is_nd_btt(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct nd_btt *nd_btt = to_nd_btt(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) uuid2 = nd_btt->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) } else if (is_nd_pfn(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct nd_pfn *nd_pfn = to_nd_pfn(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) uuid2 = nd_pfn->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (uuid2 && memcmp(uuid1, uuid2, NSLABEL_UUID_LEN) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int is_namespace_uuid_busy(struct device *dev, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (is_nd_region(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return device_for_each_child(dev, data, is_uuid_busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * nd_is_uuid_unique - verify that no other namespace has @uuid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * @dev: any device on a nvdimm_bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * @uuid: uuid to check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) bool nd_is_uuid_unique(struct device *dev, u8 *uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (!nvdimm_bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) WARN_ON_ONCE(!is_nvdimm_bus_locked(&nvdimm_bus->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (device_for_each_child(&nvdimm_bus->dev, uuid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) is_namespace_uuid_busy) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) bool pmem_should_map_pages(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct nd_namespace_common *ndns = to_ndns(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct nd_namespace_io *nsio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!IS_ENABLED(CONFIG_ZONE_DEVICE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (!test_bit(ND_REGION_PAGEMAP, &nd_region->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (is_nd_pfn(dev) || is_nd_btt(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (ndns->force_raw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) nsio = to_nd_namespace_io(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (region_intersects(nsio->res.start, resource_size(&nsio->res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) IORESOURCE_SYSTEM_RAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) IORES_DESC_NONE) == REGION_MIXED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return ARCH_MEMREMAP_PMEM == MEMREMAP_WB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) EXPORT_SYMBOL(pmem_should_map_pages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) unsigned int pmem_sector_size(struct nd_namespace_common *ndns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (is_namespace_pmem(&ndns->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct nd_namespace_pmem *nspm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) nspm = to_nd_namespace_pmem(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (nspm->lbasize == 0 || nspm->lbasize == 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* default */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) else if (nspm->lbasize == 4096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return 4096;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) dev_WARN(&ndns->dev, "unsupported sector size: %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) nspm->lbasize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * There is no namespace label (is_namespace_io()), or the label
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * indicates the default sector size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) EXPORT_SYMBOL(pmem_sector_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) const char *nvdimm_namespace_disk_name(struct nd_namespace_common *ndns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct nd_region *nd_region = to_nd_region(ndns->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) const char *suffix = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (ndns->claim && is_nd_btt(ndns->claim))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) suffix = "s";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (is_namespace_pmem(&ndns->dev) || is_namespace_io(&ndns->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int nsidx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (is_namespace_pmem(&ndns->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct nd_namespace_pmem *nspm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) nspm = to_nd_namespace_pmem(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) nsidx = nspm->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (nsidx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) sprintf(name, "pmem%d.%d%s", nd_region->id, nsidx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) suffix ? suffix : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) sprintf(name, "pmem%d%s", nd_region->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) suffix ? suffix : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) } else if (is_namespace_blk(&ndns->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct nd_namespace_blk *nsblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) nsblk = to_nd_namespace_blk(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) sprintf(name, "ndblk%d.%d%s", nd_region->id, nsblk->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) suffix ? suffix : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) EXPORT_SYMBOL(nvdimm_namespace_disk_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) const u8 *nd_dev_to_uuid(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static const u8 null_uuid[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return null_uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return nspm->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return nsblk->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return null_uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) EXPORT_SYMBOL(nd_dev_to_uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static ssize_t nstype_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return sprintf(buf, "%d\n", nd_region_to_nstype(nd_region));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static DEVICE_ATTR_RO(nstype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static ssize_t __alt_name_store(struct device *dev, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) const size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) char *input, *pos, *alt_name, **ns_altname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) ns_altname = &nspm->alt_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) ns_altname = &nsblk->alt_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (dev->driver || to_ndns(dev)->claim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) input = kstrndup(buf, len, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (!input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) pos = strim(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (strlen(pos) + 1 > NSLABEL_NAME_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) alt_name = kzalloc(NSLABEL_NAME_LEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (!alt_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) kfree(*ns_altname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) *ns_altname = alt_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) sprintf(*ns_altname, "%s", pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) rc = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) kfree(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static resource_size_t nd_namespace_blk_size(struct nd_namespace_blk *nsblk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) struct nd_region *nd_region = to_nd_region(nsblk->common.dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) struct nd_mapping *nd_mapping = &nd_region->mapping[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) resource_size_t size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (!nsblk->uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) nd_label_gen_id(&label_id, nsblk->uuid, NSLABEL_FLAG_LOCAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (strcmp(res->name, label_id.id) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) size += resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static bool __nd_namespace_blk_validate(struct nd_namespace_blk *nsblk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct nd_region *nd_region = to_nd_region(nsblk->common.dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct nd_mapping *nd_mapping = &nd_region->mapping[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int count, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (!nsblk->uuid || !nsblk->lbasize || !ndd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) nd_label_gen_id(&label_id, nsblk->uuid, NSLABEL_FLAG_LOCAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) for_each_dpa_resource(ndd, res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (strcmp(res->name, label_id.id) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * Resources with unacknowledged adjustments indicate a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * failure to update labels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (res->flags & DPA_RESOURCE_ADJUSTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /* These values match after a successful label update */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (count != nsblk->num_resources)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) for (i = 0; i < nsblk->num_resources; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct resource *found = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (res == nsblk->res[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) found = res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /* stale resource */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (!found)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) resource_size_t nd_namespace_blk_validate(struct nd_namespace_blk *nsblk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) resource_size_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) nvdimm_bus_lock(&nsblk->common.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) size = __nd_namespace_blk_validate(nsblk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) nvdimm_bus_unlock(&nsblk->common.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) EXPORT_SYMBOL(nd_namespace_blk_validate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static int nd_namespace_label_update(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) dev_WARN_ONCE(dev, dev->driver || to_ndns(dev)->claim,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) "namespace must be idle during label update\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (dev->driver || to_ndns(dev)->claim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * Only allow label writes that will result in a valid namespace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * or deletion of an existing namespace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) resource_size_t size = resource_size(&nspm->nsio.res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (size == 0 && nspm->uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /* delete allocation */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) else if (!nspm->uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return nd_pmem_namespace_label_update(nd_region, nspm, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) resource_size_t size = nd_namespace_blk_size(nsblk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if (size == 0 && nsblk->uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /* delete allocation */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) else if (!nsblk->uuid || !nsblk->lbasize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return nd_blk_namespace_label_update(nd_region, nsblk, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) static ssize_t alt_name_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) struct device_attribute *attr, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) nvdimm_bus_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) wait_nvdimm_bus_probe_idle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) rc = __alt_name_store(dev, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) rc = nd_namespace_label_update(nd_region, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) dev_dbg(dev, "%s(%zd)\n", rc < 0 ? "fail " : "", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) nvdimm_bus_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) return rc < 0 ? rc : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) static ssize_t alt_name_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) char *ns_altname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) ns_altname = nspm->alt_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) ns_altname = nsblk->alt_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return sprintf(buf, "%s\n", ns_altname ? ns_altname : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) static DEVICE_ATTR_RW(alt_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static int scan_free(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct nd_mapping *nd_mapping, struct nd_label_id *label_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) resource_size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) bool is_blk = strncmp(label_id->id, "blk", 3) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) while (n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct resource *res, *last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) resource_size_t new_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) last = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (strcmp(res->name, label_id->id) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) last = res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) res = last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (n >= resource_size(res)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) n -= resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) nd_dbg_dpa(nd_region, ndd, res, "delete %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) nvdimm_free_dpa(ndd, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /* retry with last resource deleted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * Keep BLK allocations relegated to high DPA as much as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * possible
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (is_blk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) new_start = res->start + n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) new_start = res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) rc = adjust_resource(res, new_start, resource_size(res) - n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) res->flags |= DPA_RESOURCE_ADJUSTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) nd_dbg_dpa(nd_region, ndd, res, "shrink %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * shrink_dpa_allocation - for each dimm in region free n bytes for label_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) * @nd_region: the set of dimms to reclaim @n bytes from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * @label_id: unique identifier for the namespace consuming this dpa range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * @n: number of bytes per-dimm to release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * Assumes resources are ordered. Starting from the end try to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * adjust_resource() the allocation to @n, but if @n is larger than the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * allocation delete it and find the 'new' last allocation in the label
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static int shrink_dpa_allocation(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) struct nd_label_id *label_id, resource_size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) rc = scan_free(nd_region, nd_mapping, label_id, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) static resource_size_t init_dpa_allocation(struct nd_label_id *label_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) struct nd_region *nd_region, struct nd_mapping *nd_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) resource_size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) bool is_blk = strncmp(label_id->id, "blk", 3) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) resource_size_t first_dpa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /* allocate blk from highest dpa first */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (is_blk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) first_dpa = nd_mapping->start + nd_mapping->size - n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) first_dpa = nd_mapping->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) /* first resource allocation for this label-id or dimm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) res = nvdimm_allocate_dpa(ndd, label_id, first_dpa, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) nd_dbg_dpa(nd_region, ndd, res, "init %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return rc ? n : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * space_valid() - validate free dpa space against constraints
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * @nd_region: hosting region of the free space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * @ndd: dimm device data for debug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * @label_id: namespace id to allocate space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * @prev: potential allocation that precedes free space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * @next: allocation that follows the given free space range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * @exist: first allocation with same id in the mapping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * @n: range that must satisfied for pmem allocations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * @valid: free space range to validate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * BLK-space is valid as long as it does not precede a PMEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * allocation in a given region. PMEM-space must be contiguous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * and adjacent to an existing existing allocation (if one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * exists). If reserving PMEM any space is valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) static void space_valid(struct nd_region *nd_region, struct nvdimm_drvdata *ndd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct nd_label_id *label_id, struct resource *prev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) struct resource *next, struct resource *exist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) resource_size_t n, struct resource *valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) bool is_reserve = strcmp(label_id->id, "pmem-reserve") == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) bool is_pmem = strncmp(label_id->id, "pmem", 4) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) unsigned long align;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) align = nd_region->align / nd_region->ndr_mappings;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) valid->start = ALIGN(valid->start, align);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) valid->end = ALIGN_DOWN(valid->end + 1, align) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (valid->start >= valid->end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) goto invalid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (is_reserve)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (!is_pmem) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) struct nd_mapping *nd_mapping = &nd_region->mapping[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) struct nvdimm_bus *nvdimm_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) struct blk_alloc_info info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) .nd_mapping = nd_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) .available = nd_mapping->size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) .res = valid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) WARN_ON(!is_nd_blk(&nd_region->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) nvdimm_bus = walk_to_nvdimm_bus(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) device_for_each_child(&nvdimm_bus->dev, &info, alias_dpa_busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) /* allocation needs to be contiguous, so this is all or nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (resource_size(valid) < n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) goto invalid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) /* we've got all the space we need and no existing allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (!exist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /* allocation needs to be contiguous with the existing namespace */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (valid->start == exist->end + 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) || valid->end == exist->start - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) invalid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /* truncate @valid size to 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) valid->end = valid->start - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) enum alloc_loc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) ALLOC_ERR = 0, ALLOC_BEFORE, ALLOC_MID, ALLOC_AFTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) static resource_size_t scan_allocate(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) struct nd_mapping *nd_mapping, struct nd_label_id *label_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) resource_size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) resource_size_t mapping_end = nd_mapping->start + nd_mapping->size - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) bool is_pmem = strncmp(label_id->id, "pmem", 4) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) struct resource *res, *exist = NULL, valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) const resource_size_t to_allocate = n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) int first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (strcmp(label_id->id, res->name) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) exist = res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) valid.start = nd_mapping->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) valid.end = mapping_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) valid.name = "free space";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) first = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) for_each_dpa_resource(ndd, res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct resource *next = res->sibling, *new_res = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) resource_size_t allocate, available = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) enum alloc_loc loc = ALLOC_ERR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) const char *action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) /* ignore resources outside this nd_mapping */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) if (res->start > mapping_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (res->end < nd_mapping->start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) /* space at the beginning of the mapping */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (!first++ && res->start > nd_mapping->start) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) valid.start = nd_mapping->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) valid.end = res->start - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) space_valid(nd_region, ndd, label_id, NULL, next, exist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) to_allocate, &valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) available = resource_size(&valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) if (available)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) loc = ALLOC_BEFORE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) /* space between allocations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) if (!loc && next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) valid.start = res->start + resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) valid.end = min(mapping_end, next->start - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) space_valid(nd_region, ndd, label_id, res, next, exist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) to_allocate, &valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) available = resource_size(&valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (available)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) loc = ALLOC_MID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) /* space at the end of the mapping */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) if (!loc && !next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) valid.start = res->start + resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) valid.end = mapping_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) space_valid(nd_region, ndd, label_id, res, next, exist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) to_allocate, &valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) available = resource_size(&valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) if (available)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) loc = ALLOC_AFTER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (!loc || !available)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) allocate = min(available, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) switch (loc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) case ALLOC_BEFORE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) if (strcmp(res->name, label_id->id) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) /* adjust current resource up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) rc = adjust_resource(res, res->start - allocate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) resource_size(res) + allocate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) action = "cur grow up";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) action = "allocate";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) case ALLOC_MID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if (strcmp(next->name, label_id->id) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) /* adjust next resource up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) rc = adjust_resource(next, next->start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) - allocate, resource_size(next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) + allocate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) new_res = next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) action = "next grow up";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) } else if (strcmp(res->name, label_id->id) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) action = "grow down";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) action = "allocate";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) case ALLOC_AFTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) if (strcmp(res->name, label_id->id) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) action = "grow down";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) action = "allocate";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) if (strcmp(action, "allocate") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) /* BLK allocate bottom up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) if (!is_pmem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) valid.start += available - allocate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) new_res = nvdimm_allocate_dpa(ndd, label_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) valid.start, allocate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (!new_res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) } else if (strcmp(action, "grow down") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) /* adjust current resource down */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) rc = adjust_resource(res, res->start, resource_size(res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) + allocate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) res->flags |= DPA_RESOURCE_ADJUSTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (!new_res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) new_res = res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) nd_dbg_dpa(nd_region, ndd, new_res, "%s(%d) %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) action, loc, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) n -= allocate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) if (n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) * Retry scan with newly inserted resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) * For example, if we did an ALLOC_BEFORE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) * insertion there may also have been space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) * available for an ALLOC_AFTER insertion, so we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) * need to check this same resource again
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) * If we allocated nothing in the BLK case it may be because we are in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) * an initial "pmem-reserve pass". Only do an initial BLK allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) * when none of the DPA space is reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) if ((is_pmem || !ndd->dpa.child) && n == to_allocate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) return init_dpa_allocation(label_id, nd_region, nd_mapping, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) static int merge_dpa(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) struct nd_mapping *nd_mapping, struct nd_label_id *label_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) if (strncmp("pmem", label_id->id, 4) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) for_each_dpa_resource(ndd, res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) struct resource *next = res->sibling;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) resource_size_t end = res->start + resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) if (!next || strcmp(res->name, label_id->id) != 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) || strcmp(next->name, label_id->id) != 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) || end != next->start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) end += resource_size(next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) nvdimm_free_dpa(ndd, next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) rc = adjust_resource(res, res->start, end - res->start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) nd_dbg_dpa(nd_region, ndd, res, "merge %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) res->flags |= DPA_RESOURCE_ADJUSTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) int __reserve_free_pmem(struct device *dev, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) struct nvdimm *nvdimm = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) struct nd_region *nd_region;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) if (!is_memory(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) nd_region = to_nd_region(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) if (nd_region->ndr_mappings == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) memset(&label_id, 0, sizeof(label_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) strcat(label_id.id, "pmem-reserve");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) resource_size_t n, rem = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) if (nd_mapping->nvdimm != nvdimm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) n = nd_pmem_available_dpa(nd_region, nd_mapping, &rem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) if (n == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) rem = scan_allocate(nd_region, nd_mapping, &label_id, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) dev_WARN_ONCE(&nd_region->dev, rem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) "pmem reserve underrun: %#llx of %#llx bytes\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) (unsigned long long) n - rem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) (unsigned long long) n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) return rem ? -ENXIO : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) void release_free_pmem(struct nvdimm_bus *nvdimm_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) struct nd_mapping *nd_mapping)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) struct resource *res, *_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) for_each_dpa_resource_safe(ndd, res, _res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) if (strcmp(res->name, "pmem-reserve") == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) nvdimm_free_dpa(ndd, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static int reserve_free_pmem(struct nvdimm_bus *nvdimm_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) struct nd_mapping *nd_mapping)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) struct nvdimm *nvdimm = nd_mapping->nvdimm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) rc = device_for_each_child(&nvdimm_bus->dev, nvdimm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) __reserve_free_pmem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) release_free_pmem(nvdimm_bus, nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) * grow_dpa_allocation - for each dimm allocate n bytes for @label_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) * @nd_region: the set of dimms to allocate @n more bytes from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * @label_id: unique identifier for the namespace consuming this dpa range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) * @n: number of bytes per-dimm to add to the existing allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) * Assumes resources are ordered. For BLK regions, first consume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) * BLK-only available DPA free space, then consume PMEM-aliased DPA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) * space starting at the highest DPA. For PMEM regions start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) * allocations from the start of an interleave set and end at the first
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) * BLK allocation or the end of the interleave set, whichever comes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) * first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) static int grow_dpa_allocation(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) struct nd_label_id *label_id, resource_size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) bool is_pmem = strncmp(label_id->id, "pmem", 4) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) resource_size_t rem = n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) int rc, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) * In the BLK case try once with all unallocated PMEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) * reserved, and once without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) for (j = is_pmem; j < 2; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) bool blk_only = j == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) if (blk_only) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) rc = reserve_free_pmem(nvdimm_bus, nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) rem = scan_allocate(nd_region, nd_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) label_id, rem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) if (blk_only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) release_free_pmem(nvdimm_bus, nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) /* try again and allow encroachments into PMEM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) if (rem == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) dev_WARN_ONCE(&nd_region->dev, rem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) "allocation underrun: %#llx of %#llx bytes\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) (unsigned long long) n - rem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) (unsigned long long) n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) if (rem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) rc = merge_dpa(nd_region, nd_mapping, label_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) static void nd_namespace_pmem_set_resource(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) struct nd_namespace_pmem *nspm, resource_size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) struct resource *res = &nspm->nsio.res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) resource_size_t offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) if (size && !nspm->uuid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) if (size && nspm->uuid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) struct nd_mapping *nd_mapping = &nd_region->mapping[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (!ndd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) nd_label_gen_id(&label_id, nspm->uuid, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) /* calculate a spa offset from the dpa allocation offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) if (strcmp(res->name, label_id.id) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) offset = (res->start - nd_mapping->start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) * nd_region->ndr_mappings;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) res->start = nd_region->ndr_start + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) res->end = res->start + size - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) static bool uuid_not_set(const u8 *uuid, struct device *dev, const char *where)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (!uuid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) dev_dbg(dev, "%s: uuid not set\n", where);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) static ssize_t __size_store(struct device *dev, unsigned long long val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) resource_size_t allocated = 0, available = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) struct nd_namespace_common *ndns = to_ndns(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) struct nd_mapping *nd_mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) struct nvdimm_drvdata *ndd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) u32 flags = 0, remainder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) int rc, i, id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) u8 *uuid = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) if (dev->driver || ndns->claim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) uuid = nspm->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) id = nspm->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) uuid = nsblk->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) flags = NSLABEL_FLAG_LOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) id = nsblk->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) * We need a uuid for the allocation-label and dimm(s) on which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) * to store the label.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) if (uuid_not_set(uuid, dev, __func__))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) if (nd_region->ndr_mappings == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) dev_dbg(dev, "not associated with dimm(s)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) div_u64_rem(val, nd_region->align, &remainder);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) if (remainder) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) dev_dbg(dev, "%llu is not %ldK aligned\n", val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) nd_region->align / SZ_1K);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) nd_label_gen_id(&label_id, uuid, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) * All dimms in an interleave set, or the base dimm for a blk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) * region, need to be enabled for the size to be changed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) if (!ndd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) allocated += nvdimm_allocated_dpa(ndd, &label_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) available = nd_region_allocatable_dpa(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) if (val > available + allocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) if (val == allocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) val = div_u64(val, nd_region->ndr_mappings);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) allocated = div_u64(allocated, nd_region->ndr_mappings);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) if (val < allocated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) rc = shrink_dpa_allocation(nd_region, &label_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) allocated - val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) rc = grow_dpa_allocation(nd_region, &label_id, val - allocated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) nd_namespace_pmem_set_resource(nd_region, nspm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) val * nd_region->ndr_mappings);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) * Try to delete the namespace if we deleted all of its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) * allocation, this is not the seed or 0th device for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) * region, and it is not actively claimed by a btt, pfn, or dax
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) * instance.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) if (val == 0 && id != 0 && nd_region->ns_seed != dev && !ndns->claim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) nd_device_unregister(dev, ND_ASYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) static ssize_t size_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) struct device_attribute *attr, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) unsigned long long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) u8 **uuid = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) rc = kstrtoull(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) nvdimm_bus_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) wait_nvdimm_bus_probe_idle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) rc = __size_store(dev, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) rc = nd_namespace_label_update(nd_region, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) uuid = &nspm->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) uuid = &nsblk->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) if (rc == 0 && val == 0 && uuid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) /* setting size zero == 'delete namespace' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) kfree(*uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) *uuid = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) dev_dbg(dev, "%llx %s (%d)\n", val, rc < 0 ? "fail" : "success", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) nvdimm_bus_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) return rc < 0 ? rc : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) struct device *dev = &ndns->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) return resource_size(&nspm->nsio.res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) return nd_namespace_blk_size(to_nd_namespace_blk(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) } else if (is_namespace_io(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) struct nd_namespace_io *nsio = to_nd_namespace_io(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) return resource_size(&nsio->res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) WARN_ONCE(1, "unknown namespace type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) resource_size_t nvdimm_namespace_capacity(struct nd_namespace_common *ndns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) resource_size_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) nvdimm_bus_lock(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) size = __nvdimm_namespace_capacity(ndns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) nvdimm_bus_unlock(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) EXPORT_SYMBOL(nvdimm_namespace_capacity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) bool nvdimm_namespace_locked(struct nd_namespace_common *ndns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) bool locked = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) struct device *dev = &ndns->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) struct nvdimm *nvdimm = nd_mapping->nvdimm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) if (test_bit(NDD_LOCKED, &nvdimm->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) dev_dbg(dev, "%s locked\n", nvdimm_name(nvdimm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) locked = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) return locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) EXPORT_SYMBOL(nvdimm_namespace_locked);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) static ssize_t size_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) return sprintf(buf, "%llu\n", (unsigned long long)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) nvdimm_namespace_capacity(to_ndns(dev)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) static DEVICE_ATTR(size, 0444, size_show, size_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) static u8 *namespace_to_uuid(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) return nspm->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) return nsblk->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) return ERR_PTR(-ENXIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) static ssize_t uuid_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) u8 *uuid = namespace_to_uuid(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) if (IS_ERR(uuid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) return PTR_ERR(uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) if (uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) return sprintf(buf, "%pUb\n", uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) return sprintf(buf, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) * namespace_update_uuid - check for a unique uuid and whether we're "renaming"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) * @nd_region: parent region so we can updates all dimms in the set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) * @dev: namespace type for generating label_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) * @new_uuid: incoming uuid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) * @old_uuid: reference to the uuid storage location in the namespace object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) static int namespace_update_uuid(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) struct device *dev, u8 *new_uuid, u8 **old_uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) u32 flags = is_namespace_blk(dev) ? NSLABEL_FLAG_LOCAL : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) struct nd_label_id old_label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) struct nd_label_id new_label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) if (!nd_is_uuid_unique(dev, new_uuid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) if (*old_uuid == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) * If we've already written a label with this uuid, then it's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) * too late to rename because we can't reliably update the uuid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) * without losing the old namespace. Userspace must delete this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) * namespace to abandon the old uuid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) * This check by itself is sufficient because old_uuid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) * would be NULL above if this uuid did not exist in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) * currently written set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) * FIXME: can we delete uuid with zero dpa allocated?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) if (list_empty(&nd_mapping->labels))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) nd_label_gen_id(&old_label_id, *old_uuid, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) nd_label_gen_id(&new_label_id, new_uuid, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) struct nd_label_ent *label_ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) if (strcmp(res->name, old_label_id.id) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) sprintf((void *) res->name, "%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) new_label_id.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) mutex_lock(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) list_for_each_entry(label_ent, &nd_mapping->labels, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) struct nd_namespace_label *nd_label = label_ent->label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) if (!nd_label)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) nd_label_gen_id(&label_id, nd_label->uuid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) __le32_to_cpu(nd_label->flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) if (strcmp(old_label_id.id, label_id.id) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) set_bit(ND_LABEL_REAP, &label_ent->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) mutex_unlock(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) kfree(*old_uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) *old_uuid = new_uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) static ssize_t uuid_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) struct device_attribute *attr, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) u8 *uuid = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) u8 **ns_uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) ns_uuid = &nspm->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) ns_uuid = &nsblk->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) nvdimm_bus_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) wait_nvdimm_bus_probe_idle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) if (to_ndns(dev)->claim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) rc = nd_uuid_store(dev, &uuid, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) rc = namespace_update_uuid(nd_region, dev, uuid, ns_uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) rc = nd_namespace_label_update(nd_region, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) kfree(uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) dev_dbg(dev, "result: %zd wrote: %s%s", rc, buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) buf[len - 1] == '\n' ? "" : "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) nvdimm_bus_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) return rc < 0 ? rc : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) static DEVICE_ATTR_RW(uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) static ssize_t resource_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) res = &nspm->nsio.res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) } else if (is_namespace_io(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) struct nd_namespace_io *nsio = to_nd_namespace_io(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) res = &nsio->res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) /* no address to convey if the namespace has no allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) if (resource_size(res) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) return sprintf(buf, "%#llx\n", (unsigned long long) res->start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) static DEVICE_ATTR_ADMIN_RO(resource);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) static const unsigned long blk_lbasize_supported[] = { 512, 520, 528,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) 4096, 4104, 4160, 4224, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) static const unsigned long pmem_lbasize_supported[] = { 512, 4096, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) static ssize_t sector_size_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) return nd_size_select_show(nsblk->lbasize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) blk_lbasize_supported, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) return nd_size_select_show(nspm->lbasize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) pmem_lbasize_supported, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) static ssize_t sector_size_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) struct device_attribute *attr, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) const unsigned long *supported;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) unsigned long *lbasize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) lbasize = &nsblk->lbasize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) supported = blk_lbasize_supported;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) } else if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) lbasize = &nspm->lbasize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) supported = pmem_lbasize_supported;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) nvdimm_bus_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) if (to_ndns(dev)->claim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) rc = nd_size_select_store(dev, buf, lbasize, supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) rc = nd_namespace_label_update(nd_region, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) dev_dbg(dev, "result: %zd %s: %s%s", rc, rc < 0 ? "tried" : "wrote",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) buf, buf[len - 1] == '\n' ? "" : "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) nvdimm_bus_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) return rc ? rc : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) static DEVICE_ATTR_RW(sector_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) static ssize_t dpa_extents_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) int count = 0, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) u8 *uuid = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) u32 flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) nvdimm_bus_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) if (is_namespace_pmem(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) uuid = nspm->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) } else if (is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) uuid = nsblk->uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) flags = NSLABEL_FLAG_LOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) if (!uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) nd_label_gen_id(&label_id, uuid, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) if (strcmp(res->name, label_id.id) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) nvdimm_bus_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) return sprintf(buf, "%d\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) static DEVICE_ATTR_RO(dpa_extents);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) static int btt_claim_class(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) int i, loop_bitmask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) struct nd_namespace_index *nsindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) * If any of the DIMMs do not support labels the only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) * possible BTT format is v1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) if (!ndd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) loop_bitmask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) nsindex = to_namespace_index(ndd, ndd->ns_current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) if (nsindex == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) loop_bitmask |= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) /* check whether existing labels are v1.1 or v1.2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) if (__le16_to_cpu(nsindex->major) == 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) && __le16_to_cpu(nsindex->minor) == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) loop_bitmask |= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) loop_bitmask |= 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) * If nsindex is null loop_bitmask's bit 0 will be set, and if an index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) * block is found, a v1.1 label for any mapping will set bit 1, and a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) * v1.2 label will set bit 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) * At the end of the loop, at most one of the three bits must be set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) * If multiple bits were set, it means the different mappings disagree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) * about their labels, and this must be cleaned up first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) * If all the label index blocks are found to agree, nsindex of NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) * implies labels haven't been initialized yet, and when they will,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) * they will be of the 1.2 format, so we can assume BTT2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) * If 1.1 labels are found, we enforce BTT1.1, and if 1.2 labels are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) * found, we enforce BTT2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) * If the loop was never entered, default to BTT1.1 (legacy namespaces)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) switch (loop_bitmask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) return NVDIMM_CCLASS_BTT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) return NVDIMM_CCLASS_BTT2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) static ssize_t holder_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) struct nd_namespace_common *ndns = to_ndns(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) rc = sprintf(buf, "%s\n", ndns->claim ? dev_name(ndns->claim) : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) static DEVICE_ATTR_RO(holder);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) static int __holder_class_store(struct device *dev, const char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) struct nd_namespace_common *ndns = to_ndns(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) if (dev->driver || ndns->claim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) if (sysfs_streq(buf, "btt")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) int rc = btt_claim_class(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) if (rc < NVDIMM_CCLASS_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) ndns->claim_class = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) } else if (sysfs_streq(buf, "pfn"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) ndns->claim_class = NVDIMM_CCLASS_PFN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) else if (sysfs_streq(buf, "dax"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) ndns->claim_class = NVDIMM_CCLASS_DAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) else if (sysfs_streq(buf, ""))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) ndns->claim_class = NVDIMM_CCLASS_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) static ssize_t holder_class_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) struct device_attribute *attr, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) struct nd_region *nd_region = to_nd_region(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) nvdimm_bus_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) wait_nvdimm_bus_probe_idle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) rc = __holder_class_store(dev, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) if (rc >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) rc = nd_namespace_label_update(nd_region, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) dev_dbg(dev, "%s(%d)\n", rc < 0 ? "fail " : "", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) nvdimm_bus_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) return rc < 0 ? rc : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) static ssize_t holder_class_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) struct nd_namespace_common *ndns = to_ndns(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) if (ndns->claim_class == NVDIMM_CCLASS_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) rc = sprintf(buf, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) else if ((ndns->claim_class == NVDIMM_CCLASS_BTT) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) (ndns->claim_class == NVDIMM_CCLASS_BTT2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) rc = sprintf(buf, "btt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) else if (ndns->claim_class == NVDIMM_CCLASS_PFN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) rc = sprintf(buf, "pfn\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) else if (ndns->claim_class == NVDIMM_CCLASS_DAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) rc = sprintf(buf, "dax\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) rc = sprintf(buf, "<unknown>\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) static DEVICE_ATTR_RW(holder_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) static ssize_t mode_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) struct nd_namespace_common *ndns = to_ndns(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) struct device *claim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) char *mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) nd_device_lock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) claim = ndns->claim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) if (claim && is_nd_btt(claim))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) mode = "safe";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) else if (claim && is_nd_pfn(claim))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) mode = "memory";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) else if (claim && is_nd_dax(claim))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) mode = "dax";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) else if (!claim && pmem_should_map_pages(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) mode = "memory";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) mode = "raw";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) rc = sprintf(buf, "%s\n", mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) nd_device_unlock(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) static DEVICE_ATTR_RO(mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) static ssize_t force_raw_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) struct device_attribute *attr, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) bool force_raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) int rc = strtobool(buf, &force_raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) to_ndns(dev)->force_raw = force_raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) static ssize_t force_raw_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) return sprintf(buf, "%d\n", to_ndns(dev)->force_raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) static DEVICE_ATTR_RW(force_raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) static struct attribute *nd_namespace_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) &dev_attr_nstype.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) &dev_attr_size.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) &dev_attr_mode.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) &dev_attr_uuid.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) &dev_attr_holder.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) &dev_attr_resource.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) &dev_attr_alt_name.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) &dev_attr_force_raw.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) &dev_attr_sector_size.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) &dev_attr_dpa_extents.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) &dev_attr_holder_class.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) static umode_t namespace_visible(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) struct attribute *a, int n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) struct device *dev = container_of(kobj, struct device, kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) if (a == &dev_attr_resource.attr && is_namespace_blk(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) if (is_namespace_pmem(dev) || is_namespace_blk(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) if (a == &dev_attr_size.attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) return 0644;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) return a->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) /* base is_namespace_io() attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) if (a == &dev_attr_nstype.attr || a == &dev_attr_size.attr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) a == &dev_attr_holder.attr || a == &dev_attr_holder_class.attr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) a == &dev_attr_force_raw.attr || a == &dev_attr_mode.attr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) a == &dev_attr_resource.attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) return a->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) static struct attribute_group nd_namespace_attribute_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) .attrs = nd_namespace_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) .is_visible = namespace_visible,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) static const struct attribute_group *nd_namespace_attribute_groups[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) &nd_device_attribute_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) &nd_namespace_attribute_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) &nd_numa_attribute_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) static const struct device_type namespace_io_device_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) .name = "nd_namespace_io",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) .release = namespace_io_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) .groups = nd_namespace_attribute_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) static const struct device_type namespace_pmem_device_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) .name = "nd_namespace_pmem",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) .release = namespace_pmem_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) .groups = nd_namespace_attribute_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) static const struct device_type namespace_blk_device_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) .name = "nd_namespace_blk",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) .release = namespace_blk_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) .groups = nd_namespace_attribute_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) static bool is_namespace_pmem(const struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) return dev ? dev->type == &namespace_pmem_device_type : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) static bool is_namespace_blk(const struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) return dev ? dev->type == &namespace_blk_device_type : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) static bool is_namespace_io(const struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) return dev ? dev->type == &namespace_io_device_type : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) struct nd_namespace_common *nvdimm_namespace_common_probe(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) struct nd_btt *nd_btt = is_nd_btt(dev) ? to_nd_btt(dev) : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) struct nd_pfn *nd_pfn = is_nd_pfn(dev) ? to_nd_pfn(dev) : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) struct nd_dax *nd_dax = is_nd_dax(dev) ? to_nd_dax(dev) : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) struct nd_namespace_common *ndns = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) resource_size_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) if (nd_btt || nd_pfn || nd_dax) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) if (nd_btt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) ndns = nd_btt->ndns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) else if (nd_pfn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) ndns = nd_pfn->ndns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) else if (nd_dax)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) ndns = nd_dax->nd_pfn.ndns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) if (!ndns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) * Flush any in-progess probes / removals in the driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) * for the raw personality of this namespace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) nd_device_lock(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) nd_device_unlock(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) if (ndns->dev.driver) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) dev_dbg(&ndns->dev, "is active, can't bind %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) dev_name(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) return ERR_PTR(-EBUSY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) if (dev_WARN_ONCE(&ndns->dev, ndns->claim != dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) "host (%s) vs claim (%s) mismatch\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) dev_name(dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) dev_name(ndns->claim)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) return ERR_PTR(-ENXIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) ndns = to_ndns(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) if (ndns->claim) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) dev_dbg(dev, "claimed by %s, failing probe\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) dev_name(ndns->claim));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) return ERR_PTR(-ENXIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) if (nvdimm_namespace_locked(ndns))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) return ERR_PTR(-EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) size = nvdimm_namespace_capacity(ndns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) if (size < ND_MIN_NAMESPACE_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) dev_dbg(&ndns->dev, "%pa, too small must be at least %#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) &size, ND_MIN_NAMESPACE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) * Note, alignment validation for fsdax and devdax mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) * namespaces happens in nd_pfn_validate() where infoblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) * padding parameters can be applied.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) if (pmem_should_map_pages(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) struct nd_namespace_io *nsio = to_nd_namespace_io(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) struct resource *res = &nsio->res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) if (!IS_ALIGNED(res->start | (res->end + 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) memremap_compat_align())) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) dev_err(&ndns->dev, "%pr misaligned, unable to map\n", res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) return ERR_PTR(-EOPNOTSUPP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) if (is_namespace_pmem(&ndns->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) struct nd_namespace_pmem *nspm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) nspm = to_nd_namespace_pmem(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) if (uuid_not_set(nspm->uuid, &ndns->dev, __func__))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) } else if (is_namespace_blk(&ndns->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) struct nd_namespace_blk *nsblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) nsblk = to_nd_namespace_blk(&ndns->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) if (uuid_not_set(nsblk->uuid, &ndns->dev, __func__))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) if (!nsblk->lbasize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) dev_dbg(&ndns->dev, "sector size not set\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) if (!nd_namespace_blk_validate(nsblk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) return ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) return ndns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) EXPORT_SYMBOL(nvdimm_namespace_common_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) int devm_namespace_enable(struct device *dev, struct nd_namespace_common *ndns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) resource_size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) if (is_namespace_blk(&ndns->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) return devm_nsio_enable(dev, to_nd_namespace_io(&ndns->dev), size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) EXPORT_SYMBOL_GPL(devm_namespace_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) void devm_namespace_disable(struct device *dev, struct nd_namespace_common *ndns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) if (is_namespace_blk(&ndns->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) devm_nsio_disable(dev, to_nd_namespace_io(&ndns->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) EXPORT_SYMBOL_GPL(devm_namespace_disable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) static struct device **create_namespace_io(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) struct nd_namespace_io *nsio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) struct device *dev, **devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) nsio = kzalloc(sizeof(*nsio), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) if (!nsio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) devs = kcalloc(2, sizeof(struct device *), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) if (!devs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) kfree(nsio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) dev = &nsio->common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) dev->type = &namespace_io_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) dev->parent = &nd_region->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) res = &nsio->res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) res->name = dev_name(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) res->flags = IORESOURCE_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) res->start = nd_region->ndr_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) res->end = res->start + nd_region->ndr_size - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) devs[0] = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) return devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) static bool has_uuid_at_pos(struct nd_region *nd_region, u8 *uuid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) u64 cookie, u16 pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) struct nd_namespace_label *found = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) struct nd_interleave_set *nd_set = nd_region->nd_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) struct nd_label_ent *label_ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) bool found_uuid = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) list_for_each_entry(label_ent, &nd_mapping->labels, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) struct nd_namespace_label *nd_label = label_ent->label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) u16 position, nlabel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) u64 isetcookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) if (!nd_label)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) isetcookie = __le64_to_cpu(nd_label->isetcookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) position = __le16_to_cpu(nd_label->position);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) nlabel = __le16_to_cpu(nd_label->nlabel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) if (isetcookie != cookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) if (memcmp(nd_label->uuid, uuid, NSLABEL_UUID_LEN) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) if (namespace_label_has(ndd, type_guid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) && !guid_equal(&nd_set->type_guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) &nd_label->type_guid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) dev_dbg(ndd->dev, "expect type_guid %pUb got %pUb\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) &nd_set->type_guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) &nd_label->type_guid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) if (found_uuid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) dev_dbg(ndd->dev, "duplicate entry for uuid\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) found_uuid = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) if (nlabel != nd_region->ndr_mappings)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) if (position != pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) found = nd_label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) if (found)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) return found != NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) static int select_pmem_id(struct nd_region *nd_region, u8 *pmem_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) if (!pmem_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) struct nd_namespace_label *nd_label = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) u64 hw_start, hw_end, pmem_start, pmem_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) struct nd_label_ent *label_ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) lockdep_assert_held(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) list_for_each_entry(label_ent, &nd_mapping->labels, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) nd_label = label_ent->label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) if (!nd_label)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) if (memcmp(nd_label->uuid, pmem_id, NSLABEL_UUID_LEN) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) nd_label = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) if (!nd_label) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) * Check that this label is compliant with the dpa
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) * range published in NFIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) hw_start = nd_mapping->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) hw_end = hw_start + nd_mapping->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) pmem_start = __le64_to_cpu(nd_label->dpa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) pmem_end = pmem_start + __le64_to_cpu(nd_label->rawsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) if (pmem_start >= hw_start && pmem_start < hw_end
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) && pmem_end <= hw_end && pmem_end > hw_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) /* pass */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) dev_dbg(&nd_region->dev, "%s invalid label for %pUb\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) dev_name(ndd->dev), nd_label->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) /* move recently validated label to the front of the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) list_move(&label_ent->list, &nd_mapping->labels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) * create_namespace_pmem - validate interleave set labelling, retrieve label0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) * @nd_region: region with mappings to validate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) * @nspm: target namespace to create
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) * @nd_label: target pmem namespace label to evaluate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) static struct device *create_namespace_pmem(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) struct nd_namespace_index *nsindex,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) struct nd_namespace_label *nd_label)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) u64 cookie = nd_region_interleave_set_cookie(nd_region, nsindex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) u64 altcookie = nd_region_interleave_set_altcookie(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) struct nd_label_ent *label_ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) struct nd_namespace_pmem *nspm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) struct nd_mapping *nd_mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) resource_size_t size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) u16 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) if (cookie == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) dev_dbg(&nd_region->dev, "invalid interleave-set-cookie\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) return ERR_PTR(-ENXIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) if (__le64_to_cpu(nd_label->isetcookie) != cookie) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) dev_dbg(&nd_region->dev, "invalid cookie in label: %pUb\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) nd_label->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) if (__le64_to_cpu(nd_label->isetcookie) != altcookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) return ERR_PTR(-EAGAIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) dev_dbg(&nd_region->dev, "valid altcookie in label: %pUb\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) nd_label->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) nspm = kzalloc(sizeof(*nspm), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) if (!nspm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) nspm->id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) dev = &nspm->nsio.common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) dev->type = &namespace_pmem_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) dev->parent = &nd_region->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) res = &nspm->nsio.res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) res->name = dev_name(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) res->flags = IORESOURCE_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) if (has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) if (has_uuid_at_pos(nd_region, nd_label->uuid, altcookie, i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) if (i < nd_region->ndr_mappings) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) struct nvdimm *nvdimm = nd_region->mapping[i].nvdimm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) * Give up if we don't find an instance of a uuid at each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) * position (from 0 to nd_region->ndr_mappings - 1), or if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) * find a dimm with two instances of the same uuid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) dev_err(&nd_region->dev, "%s missing label for %pUb\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) nvdimm_name(nvdimm), nd_label->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) * Fix up each mapping's 'labels' to have the validated pmem label for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) * that position at labels[0], and NULL at labels[1]. In the process,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) * check that the namespace aligns with interleave-set. We know
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) * that it does not overlap with any blk namespaces by virtue of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) * the dimm being enabled (i.e. nd_label_reserve_dpa()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) * succeeded).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) rc = select_pmem_id(nd_region, nd_label->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) /* Calculate total size and populate namespace properties from label0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) struct nd_namespace_label *label0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) struct nvdimm_drvdata *ndd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) label_ent = list_first_entry_or_null(&nd_mapping->labels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) typeof(*label_ent), list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) label0 = label_ent ? label_ent->label : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) if (!label0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) size += __le64_to_cpu(label0->rawsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) if (__le16_to_cpu(label0->position) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) WARN_ON(nspm->alt_name || nspm->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) nspm->alt_name = kmemdup((void __force *) label0->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) NSLABEL_NAME_LEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) nspm->uuid = kmemdup((void __force *) label0->uuid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) NSLABEL_UUID_LEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) nspm->lbasize = __le64_to_cpu(label0->lbasize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) if (namespace_label_has(ndd, abstraction_guid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) nspm->nsio.common.claim_class
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) = to_nvdimm_cclass(&label0->abstraction_guid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) if (!nspm->alt_name || !nspm->uuid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) nd_namespace_pmem_set_resource(nd_region, nspm, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) return dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) namespace_pmem_release(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) switch (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) case -EINVAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) dev_dbg(&nd_region->dev, "invalid label(s)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) case -ENODEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) dev_dbg(&nd_region->dev, "label not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) dev_dbg(&nd_region->dev, "unexpected err: %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) return ERR_PTR(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) struct resource *nsblk_add_resource(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) resource_size_t start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) struct nd_label_id label_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) nd_label_gen_id(&label_id, nsblk->uuid, NSLABEL_FLAG_LOCAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) res = krealloc(nsblk->res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) sizeof(void *) * (nsblk->num_resources + 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) nsblk->res = (struct resource **) res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) for_each_dpa_resource(ndd, res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) if (strcmp(res->name, label_id.id) == 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) && res->start == start) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) nsblk->res[nsblk->num_resources++] = res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) static struct device *nd_namespace_blk_create(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) struct nd_namespace_blk *nsblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) if (!is_nd_blk(&nd_region->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) nsblk = kzalloc(sizeof(*nsblk), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) if (!nsblk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) dev = &nsblk->common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) dev->type = &namespace_blk_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) nsblk->id = ida_simple_get(&nd_region->ns_ida, 0, 0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) if (nsblk->id < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) kfree(nsblk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) dev_set_name(dev, "namespace%d.%d", nd_region->id, nsblk->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) dev->parent = &nd_region->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) return &nsblk->common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) static struct device *nd_namespace_pmem_create(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) struct nd_namespace_pmem *nspm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) if (!is_memory(&nd_region->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) nspm = kzalloc(sizeof(*nspm), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) if (!nspm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) dev = &nspm->nsio.common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) dev->type = &namespace_pmem_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) dev->parent = &nd_region->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) res = &nspm->nsio.res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) res->name = dev_name(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) res->flags = IORESOURCE_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) nspm->id = ida_simple_get(&nd_region->ns_ida, 0, 0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) if (nspm->id < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) kfree(nspm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) dev_set_name(dev, "namespace%d.%d", nd_region->id, nspm->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) nd_namespace_pmem_set_resource(nd_region, nspm, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) return dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) void nd_region_create_ns_seed(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) WARN_ON(!is_nvdimm_bus_locked(&nd_region->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) if (nd_region_to_nstype(nd_region) == ND_DEVICE_NAMESPACE_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) if (is_nd_blk(&nd_region->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) nd_region->ns_seed = nd_namespace_blk_create(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) nd_region->ns_seed = nd_namespace_pmem_create(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) * Seed creation failures are not fatal, provisioning is simply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) * disabled until memory becomes available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) if (!nd_region->ns_seed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) dev_err(&nd_region->dev, "failed to create %s namespace\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) is_nd_blk(&nd_region->dev) ? "blk" : "pmem");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) nd_device_register(nd_region->ns_seed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) void nd_region_create_dax_seed(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) WARN_ON(!is_nvdimm_bus_locked(&nd_region->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) nd_region->dax_seed = nd_dax_create(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) * Seed creation failures are not fatal, provisioning is simply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) * disabled until memory becomes available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) if (!nd_region->dax_seed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) dev_err(&nd_region->dev, "failed to create dax namespace\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) void nd_region_create_pfn_seed(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) WARN_ON(!is_nvdimm_bus_locked(&nd_region->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) nd_region->pfn_seed = nd_pfn_create(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) * Seed creation failures are not fatal, provisioning is simply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) * disabled until memory becomes available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) if (!nd_region->pfn_seed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) dev_err(&nd_region->dev, "failed to create pfn namespace\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) void nd_region_create_btt_seed(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) WARN_ON(!is_nvdimm_bus_locked(&nd_region->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) nd_region->btt_seed = nd_btt_create(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) * Seed creation failures are not fatal, provisioning is simply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) * disabled until memory becomes available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) if (!nd_region->btt_seed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) dev_err(&nd_region->dev, "failed to create btt namespace\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) static int add_namespace_resource(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) struct nd_namespace_label *nd_label, struct device **devs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) struct nd_mapping *nd_mapping = &nd_region->mapping[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) for (i = 0; i < count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) u8 *uuid = namespace_to_uuid(devs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) if (IS_ERR_OR_NULL(uuid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) if (memcmp(uuid, nd_label->uuid, NSLABEL_UUID_LEN) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) if (is_namespace_blk(devs[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) res = nsblk_add_resource(nd_region, ndd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) to_nd_namespace_blk(devs[i]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) __le64_to_cpu(nd_label->dpa));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) nd_dbg_dpa(nd_region, ndd, res, "%d assign\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) dev_err(&nd_region->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) "error: conflicting extents for uuid: %pUb\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) nd_label->uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) static struct device *create_namespace_blk(struct nd_region *nd_region,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) struct nd_namespace_label *nd_label, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) struct nd_mapping *nd_mapping = &nd_region->mapping[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) struct nd_interleave_set *nd_set = nd_region->nd_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) struct nd_namespace_blk *nsblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) char name[NSLABEL_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) struct device *dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) if (namespace_label_has(ndd, type_guid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) if (!guid_equal(&nd_set->type_guid, &nd_label->type_guid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) dev_dbg(ndd->dev, "expect type_guid %pUb got %pUb\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) &nd_set->type_guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) &nd_label->type_guid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) return ERR_PTR(-EAGAIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) if (nd_label->isetcookie != __cpu_to_le64(nd_set->cookie2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) dev_dbg(ndd->dev, "expect cookie %#llx got %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) nd_set->cookie2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) __le64_to_cpu(nd_label->isetcookie));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) return ERR_PTR(-EAGAIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) nsblk = kzalloc(sizeof(*nsblk), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) if (!nsblk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) dev = &nsblk->common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288) dev->type = &namespace_blk_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) dev->parent = &nd_region->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) nsblk->id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) nsblk->lbasize = __le64_to_cpu(nd_label->lbasize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) nsblk->uuid = kmemdup(nd_label->uuid, NSLABEL_UUID_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) if (namespace_label_has(ndd, abstraction_guid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) nsblk->common.claim_class
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) = to_nvdimm_cclass(&nd_label->abstraction_guid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297) if (!nsblk->uuid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) goto blk_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) memcpy(name, nd_label->name, NSLABEL_NAME_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) if (name[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) nsblk->alt_name = kmemdup(name, NSLABEL_NAME_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) if (!nsblk->alt_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) goto blk_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) res = nsblk_add_resource(nd_region, ndd, nsblk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) __le64_to_cpu(nd_label->dpa));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) goto blk_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) nd_dbg_dpa(nd_region, ndd, res, "%d: assign\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) return dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) blk_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) namespace_blk_release(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314) return ERR_PTR(-ENXIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) static int cmp_dpa(const void *a, const void *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) const struct device *dev_a = *(const struct device **) a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) const struct device *dev_b = *(const struct device **) b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) struct nd_namespace_blk *nsblk_a, *nsblk_b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) struct nd_namespace_pmem *nspm_a, *nspm_b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) if (is_namespace_io(dev_a))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) if (is_namespace_blk(dev_a)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) nsblk_a = to_nd_namespace_blk(dev_a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) nsblk_b = to_nd_namespace_blk(dev_b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) return memcmp(&nsblk_a->res[0]->start, &nsblk_b->res[0]->start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) sizeof(resource_size_t));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) nspm_a = to_nd_namespace_pmem(dev_a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) nspm_b = to_nd_namespace_pmem(dev_b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) return memcmp(&nspm_a->nsio.res.start, &nspm_b->nsio.res.start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) sizeof(resource_size_t));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) static struct device **scan_labels(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) int i, count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) struct device *dev, **devs = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) struct nd_label_ent *label_ent, *e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) struct nd_mapping *nd_mapping = &nd_region->mapping[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) resource_size_t map_end = nd_mapping->start + nd_mapping->size - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) /* "safe" because create_namespace_pmem() might list_move() label_ent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) list_for_each_entry_safe(label_ent, e, &nd_mapping->labels, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) struct nd_namespace_label *nd_label = label_ent->label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) struct device **__devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) if (!nd_label)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) flags = __le32_to_cpu(nd_label->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) if (is_nd_blk(&nd_region->dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) == !!(flags & NSLABEL_FLAG_LOCAL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) /* pass, region matches label type */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) /* skip labels that describe extents outside of the region */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) if (__le64_to_cpu(nd_label->dpa) < nd_mapping->start ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) __le64_to_cpu(nd_label->dpa) > map_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) i = add_namespace_resource(nd_region, nd_label, devs, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) if (i < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) if (i < count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) __devs = kcalloc(count + 2, sizeof(dev), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) if (!__devs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) memcpy(__devs, devs, sizeof(dev) * count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) kfree(devs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) devs = __devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) if (is_nd_blk(&nd_region->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) dev = create_namespace_blk(nd_region, nd_label, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) struct nd_namespace_index *nsindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) nsindex = to_namespace_index(ndd, ndd->ns_current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) dev = create_namespace_pmem(nd_region, nsindex, nd_label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) if (IS_ERR(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) switch (PTR_ERR(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) case -EAGAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) /* skip invalid labels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) case -ENODEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) /* fallthrough to seed creation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) devs[count++] = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) dev_dbg(&nd_region->dev, "discovered %d %s namespace%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) count, is_nd_blk(&nd_region->dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) ? "blk" : "pmem", count == 1 ? "" : "s");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) if (count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) /* Publish a zero-sized namespace for userspace to configure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) nd_mapping_free_labels(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) devs = kcalloc(2, sizeof(dev), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) if (!devs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) if (is_nd_blk(&nd_region->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) struct nd_namespace_blk *nsblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) nsblk = kzalloc(sizeof(*nsblk), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) if (!nsblk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) dev = &nsblk->common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) dev->type = &namespace_blk_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) struct nd_namespace_pmem *nspm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) nspm = kzalloc(sizeof(*nspm), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) if (!nspm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) dev = &nspm->nsio.common.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) dev->type = &namespace_pmem_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) nd_namespace_pmem_set_resource(nd_region, nspm, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) dev->parent = &nd_region->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) devs[count++] = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) } else if (is_memory(&nd_region->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) /* clean unselected labels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) struct list_head *l, *e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) LIST_HEAD(list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) if (list_empty(&nd_mapping->labels)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) j = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) list_for_each_safe(l, e, &nd_mapping->labels) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454) if (!j--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) list_move_tail(l, &list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) nd_mapping_free_labels(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) list_splice_init(&list, &nd_mapping->labels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) if (count > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) sort(devs, count, sizeof(struct device *), cmp_dpa, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) return devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) if (devs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) for (i = 0; devs[i]; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) if (is_nd_blk(&nd_region->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) namespace_blk_release(devs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) namespace_pmem_release(devs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) kfree(devs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) static struct device **create_namespaces(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) struct nd_mapping *nd_mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) struct device **devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) if (nd_region->ndr_mappings == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) /* lock down all mappings while we scan labels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) mutex_lock_nested(&nd_mapping->lock, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) devs = scan_labels(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) int reverse = nd_region->ndr_mappings - 1 - i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) nd_mapping = &nd_region->mapping[reverse];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) mutex_unlock(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) return devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) static void deactivate_labels(void *region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) struct nd_region *nd_region = region;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) struct nvdimm_drvdata *ndd = nd_mapping->ndd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) struct nvdimm *nvdimm = nd_mapping->nvdimm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) mutex_lock(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) nd_mapping_free_labels(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) mutex_unlock(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) put_ndd(ndd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) nd_mapping->ndd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) if (ndd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) atomic_dec(&nvdimm->busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) static int init_active_labels(struct nd_region *nd_region)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) int i, rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) for (i = 0; i < nd_region->ndr_mappings; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) struct nd_mapping *nd_mapping = &nd_region->mapping[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) struct nvdimm *nvdimm = nd_mapping->nvdimm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) struct nd_label_ent *label_ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) int count, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) * If the dimm is disabled then we may need to prevent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) * the region from being activated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) if (!ndd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) if (test_bit(NDD_LOCKED, &nvdimm->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) /* fail, label data may be unreadable */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) else if (test_bit(NDD_LABELING, &nvdimm->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) /* fail, labels needed to disambiguate dpa */;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) dev_err(&nd_region->dev, "%s: is %s, failing probe\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) dev_name(&nd_mapping->nvdimm->dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) test_bit(NDD_LOCKED, &nvdimm->flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) ? "locked" : "disabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) rc = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) nd_mapping->ndd = ndd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559) atomic_inc(&nvdimm->busy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) get_ndd(ndd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) count = nd_label_active_count(ndd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) dev_dbg(ndd->dev, "count: %d\n", count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) if (!count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) for (j = 0; j < count; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) struct nd_namespace_label *label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) label_ent = kzalloc(sizeof(*label_ent), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) if (!label_ent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) label = nd_label_active(ndd, j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) if (test_bit(NDD_NOBLK, &nvdimm->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) u32 flags = __le32_to_cpu(label->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) flags &= ~NSLABEL_FLAG_LOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) label->flags = __cpu_to_le32(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) label_ent->label = label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) mutex_lock(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) list_add_tail(&label_ent->list, &nd_mapping->labels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583) mutex_unlock(&nd_mapping->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) if (j < count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) if (i < nd_region->ndr_mappings)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) deactivate_labels(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) return devm_add_action_or_reset(&nd_region->dev, deactivate_labels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) int nd_region_register_namespaces(struct nd_region *nd_region, int *err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) struct device **devs = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) int i, rc = 0, type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) *err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) nvdimm_bus_lock(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) rc = init_active_labels(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) nvdimm_bus_unlock(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) type = nd_region_to_nstype(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) case ND_DEVICE_NAMESPACE_IO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) devs = create_namespace_io(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) case ND_DEVICE_NAMESPACE_PMEM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622) case ND_DEVICE_NAMESPACE_BLK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) devs = create_namespaces(nd_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) nvdimm_bus_unlock(&nd_region->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) if (!devs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633) for (i = 0; devs[i]; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) struct device *dev = devs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) if (type == ND_DEVICE_NAMESPACE_BLK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) struct nd_namespace_blk *nsblk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) nsblk = to_nd_namespace_blk(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) id = ida_simple_get(&nd_region->ns_ida, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) nsblk->id = id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) } else if (type == ND_DEVICE_NAMESPACE_PMEM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) struct nd_namespace_pmem *nspm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) nspm = to_nd_namespace_pmem(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) id = ida_simple_get(&nd_region->ns_ida, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) nspm->id = id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) id = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654) if (id < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) dev_set_name(dev, "namespace%d.%d", nd_region->id, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) nd_device_register(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659) if (i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) nd_region->ns_seed = devs[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662) if (devs[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) for (j = i; devs[j]; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) struct device *dev = devs[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668) device_initialize(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671) *err = j - i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673) * All of the namespaces we tried to register failed, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674) * fail region activation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) if (*err == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) rc = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) kfree(devs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681) if (rc == -ENODEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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