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-rw-r--r--drivers/nvdimm/btt.c33
-rw-r--r--drivers/nvdimm/btt.h2
-rw-r--r--drivers/nvdimm/btt_devs.c8
-rw-r--r--drivers/nvdimm/dimm_devs.c7
-rw-r--r--drivers/nvdimm/label.c26
-rw-r--r--drivers/nvdimm/namespace_devs.c14
-rw-r--r--drivers/nvdimm/of_pmem.c1
-rw-r--r--drivers/nvdimm/region_devs.c7
8 files changed, 76 insertions, 22 deletions
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index b123b0dcf274..4671776f5623 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -541,9 +541,9 @@ static int arena_clear_freelist_error(struct arena_info *arena, u32 lane)
static int btt_freelist_init(struct arena_info *arena)
{
- int old, new, ret;
- u32 i, map_entry;
- struct log_entry log_new, log_old;
+ int new, ret;
+ struct log_entry log_new;
+ u32 i, map_entry, log_oldmap, log_newmap;
arena->freelist = kcalloc(arena->nfree, sizeof(struct free_entry),
GFP_KERNEL);
@@ -551,24 +551,26 @@ static int btt_freelist_init(struct arena_info *arena)
return -ENOMEM;
for (i = 0; i < arena->nfree; i++) {
- old = btt_log_read(arena, i, &log_old, LOG_OLD_ENT);
- if (old < 0)
- return old;
-
new = btt_log_read(arena, i, &log_new, LOG_NEW_ENT);
if (new < 0)
return new;
+ /* old and new map entries with any flags stripped out */
+ log_oldmap = ent_lba(le32_to_cpu(log_new.old_map));
+ log_newmap = ent_lba(le32_to_cpu(log_new.new_map));
+
/* sub points to the next one to be overwritten */
arena->freelist[i].sub = 1 - new;
arena->freelist[i].seq = nd_inc_seq(le32_to_cpu(log_new.seq));
- arena->freelist[i].block = le32_to_cpu(log_new.old_map);
+ arena->freelist[i].block = log_oldmap;
/*
* FIXME: if error clearing fails during init, we want to make
* the BTT read-only
*/
- if (ent_e_flag(log_new.old_map)) {
+ if (ent_e_flag(log_new.old_map) &&
+ !ent_normal(log_new.old_map)) {
+ arena->freelist[i].has_err = 1;
ret = arena_clear_freelist_error(arena, i);
if (ret)
dev_err_ratelimited(to_dev(arena),
@@ -576,7 +578,7 @@ static int btt_freelist_init(struct arena_info *arena)
}
/* This implies a newly created or untouched flog entry */
- if (log_new.old_map == log_new.new_map)
+ if (log_oldmap == log_newmap)
continue;
/* Check if map recovery is needed */
@@ -584,8 +586,15 @@ static int btt_freelist_init(struct arena_info *arena)
NULL, NULL, 0);
if (ret)
return ret;
- if ((le32_to_cpu(log_new.new_map) != map_entry) &&
- (le32_to_cpu(log_new.old_map) == map_entry)) {
+
+ /*
+ * The map_entry from btt_read_map is stripped of any flag bits,
+ * so use the stripped out versions from the log as well for
+ * testing whether recovery is needed. For restoration, use the
+ * 'raw' version of the log entries as that captured what we
+ * were going to write originally.
+ */
+ if ((log_newmap != map_entry) && (log_oldmap == map_entry)) {
/*
* Last transaction wrote the flog, but wasn't able
* to complete the map write. So fix up the map.
diff --git a/drivers/nvdimm/btt.h b/drivers/nvdimm/btt.h
index db3cb6d4d0d4..ddff49c707b0 100644
--- a/drivers/nvdimm/btt.h
+++ b/drivers/nvdimm/btt.h
@@ -44,6 +44,8 @@
#define ent_e_flag(ent) (!!(ent & MAP_ERR_MASK))
#define ent_z_flag(ent) (!!(ent & MAP_TRIM_MASK))
#define set_e_flag(ent) (ent |= MAP_ERR_MASK)
+/* 'normal' is both e and z flags set */
+#define ent_normal(ent) (ent_e_flag(ent) && ent_z_flag(ent))
enum btt_init_state {
INIT_UNCHECKED = 0,
diff --git a/drivers/nvdimm/btt_devs.c b/drivers/nvdimm/btt_devs.c
index 795ad4ff35ca..b72a303176c7 100644
--- a/drivers/nvdimm/btt_devs.c
+++ b/drivers/nvdimm/btt_devs.c
@@ -159,11 +159,19 @@ static ssize_t size_show(struct device *dev,
}
static DEVICE_ATTR_RO(size);
+static ssize_t log_zero_flags_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "Y\n");
+}
+static DEVICE_ATTR_RO(log_zero_flags);
+
static struct attribute *nd_btt_attributes[] = {
&dev_attr_sector_size.attr,
&dev_attr_namespace.attr,
&dev_attr_uuid.attr,
&dev_attr_size.attr,
+ &dev_attr_log_zero_flags.attr,
NULL,
};
diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c
index efe412a6b5b9..91b9abbf689c 100644
--- a/drivers/nvdimm/dimm_devs.c
+++ b/drivers/nvdimm/dimm_devs.c
@@ -11,6 +11,7 @@
* General Public License for more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/device.h>
#include <linux/ndctl.h>
@@ -25,6 +26,10 @@
static DEFINE_IDA(dimm_ida);
+static bool noblk;
+module_param(noblk, bool, 0444);
+MODULE_PARM_DESC(noblk, "force disable BLK / local alias support");
+
/*
* Retrieve bus and dimm handle and return if this bus supports
* get_config_data commands
@@ -551,6 +556,8 @@ struct nvdimm *__nvdimm_create(struct nvdimm_bus *nvdimm_bus,
nvdimm->dimm_id = dimm_id;
nvdimm->provider_data = provider_data;
+ if (noblk)
+ flags |= 1 << NDD_NOBLK;
nvdimm->flags = flags;
nvdimm->cmd_mask = cmd_mask;
nvdimm->num_flush = num_flush;
diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index a11bf4e6b451..f3d753d3169c 100644
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -392,6 +392,7 @@ int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd)
return 0; /* no label, nothing to reserve */
for_each_clear_bit_le(slot, free, nslot) {
+ struct nvdimm *nvdimm = to_nvdimm(ndd->dev);
struct nd_namespace_label *nd_label;
struct nd_region *nd_region = NULL;
u8 label_uuid[NSLABEL_UUID_LEN];
@@ -406,6 +407,8 @@ int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd)
memcpy(label_uuid, nd_label->uuid, NSLABEL_UUID_LEN);
flags = __le32_to_cpu(nd_label->flags);
+ if (test_bit(NDD_NOBLK, &nvdimm->flags))
+ flags &= ~NSLABEL_FLAG_LOCAL;
nd_label_gen_id(&label_id, label_uuid, flags);
res = nvdimm_allocate_dpa(ndd, &label_id,
__le64_to_cpu(nd_label->dpa),
@@ -755,7 +758,7 @@ static const guid_t *to_abstraction_guid(enum nvdimm_claim_class claim_class,
static int __pmem_label_update(struct nd_region *nd_region,
struct nd_mapping *nd_mapping, struct nd_namespace_pmem *nspm,
- int pos)
+ int pos, unsigned long flags)
{
struct nd_namespace_common *ndns = &nspm->nsio.common;
struct nd_interleave_set *nd_set = nd_region->nd_set;
@@ -796,7 +799,7 @@ static int __pmem_label_update(struct nd_region *nd_region,
memcpy(nd_label->uuid, nspm->uuid, NSLABEL_UUID_LEN);
if (nspm->alt_name)
memcpy(nd_label->name, nspm->alt_name, NSLABEL_NAME_LEN);
- nd_label->flags = __cpu_to_le32(NSLABEL_FLAG_UPDATING);
+ nd_label->flags = __cpu_to_le32(flags);
nd_label->nlabel = __cpu_to_le16(nd_region->ndr_mappings);
nd_label->position = __cpu_to_le16(pos);
nd_label->isetcookie = __cpu_to_le64(cookie);
@@ -1249,13 +1252,13 @@ static int del_labels(struct nd_mapping *nd_mapping, u8 *uuid)
int nd_pmem_namespace_label_update(struct nd_region *nd_region,
struct nd_namespace_pmem *nspm, resource_size_t size)
{
- int i;
+ int i, rc;
for (i = 0; i < nd_region->ndr_mappings; i++) {
struct nd_mapping *nd_mapping = &nd_region->mapping[i];
struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
struct resource *res;
- int rc, count = 0;
+ int count = 0;
if (size == 0) {
rc = del_labels(nd_mapping, nspm->uuid);
@@ -1273,7 +1276,20 @@ int nd_pmem_namespace_label_update(struct nd_region *nd_region,
if (rc < 0)
return rc;
- rc = __pmem_label_update(nd_region, nd_mapping, nspm, i);
+ rc = __pmem_label_update(nd_region, nd_mapping, nspm, i,
+ NSLABEL_FLAG_UPDATING);
+ if (rc)
+ return rc;
+ }
+
+ if (size == 0)
+ return 0;
+
+ /* Clear the UPDATING flag per UEFI 2.7 expectations */
+ for (i = 0; i < nd_region->ndr_mappings; i++) {
+ struct nd_mapping *nd_mapping = &nd_region->mapping[i];
+
+ rc = __pmem_label_update(nd_region, nd_mapping, nspm, i, 0);
if (rc)
return rc;
}
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index 4b077555ac70..17fb7f931f0c 100644
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -1506,13 +1506,13 @@ static ssize_t __holder_class_store(struct device *dev, const char *buf)
if (dev->driver || ndns->claim)
return -EBUSY;
- if (strcmp(buf, "btt") == 0 || strcmp(buf, "btt\n") == 0)
+ if (sysfs_streq(buf, "btt"))
ndns->claim_class = btt_claim_class(dev);
- else if (strcmp(buf, "pfn") == 0 || strcmp(buf, "pfn\n") == 0)
+ else if (sysfs_streq(buf, "pfn"))
ndns->claim_class = NVDIMM_CCLASS_PFN;
- else if (strcmp(buf, "dax") == 0 || strcmp(buf, "dax\n") == 0)
+ else if (sysfs_streq(buf, "dax"))
ndns->claim_class = NVDIMM_CCLASS_DAX;
- else if (strcmp(buf, "") == 0 || strcmp(buf, "\n") == 0)
+ else if (sysfs_streq(buf, ""))
ndns->claim_class = NVDIMM_CCLASS_NONE;
else
return -EINVAL;
@@ -2492,6 +2492,12 @@ static int init_active_labels(struct nd_region *nd_region)
if (!label_ent)
break;
label = nd_label_active(ndd, j);
+ if (test_bit(NDD_NOBLK, &nvdimm->flags)) {
+ u32 flags = __le32_to_cpu(label->flags);
+
+ flags &= ~NSLABEL_FLAG_LOCAL;
+ label->flags = __cpu_to_le32(flags);
+ }
label_ent->label = label;
mutex_lock(&nd_mapping->lock);
diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c
index 0a701837dfc0..11b9821eba85 100644
--- a/drivers/nvdimm/of_pmem.c
+++ b/drivers/nvdimm/of_pmem.c
@@ -108,7 +108,6 @@ static struct platform_driver of_pmem_region_driver = {
.remove = of_pmem_region_remove,
.driver = {
.name = "of_pmem",
- .owner = THIS_MODULE,
.of_match_table = of_pmem_region_match,
},
};
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index e2818f94f292..3b58baa44b5c 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -1003,6 +1003,13 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus,
if (test_bit(NDD_UNARMED, &nvdimm->flags))
ro = 1;
+
+ if (test_bit(NDD_NOBLK, &nvdimm->flags)
+ && dev_type == &nd_blk_device_type) {
+ dev_err(&nvdimm_bus->dev, "%s: %s mapping%d is not BLK capable\n",
+ caller, dev_name(&nvdimm->dev), i);
+ return NULL;
+ }
}
if (dev_type == &nd_blk_device_type) {
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 19:48:57 +0300