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Merge branch 'for-4.10/libnvdimm' into libnvdimm-for-next

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This commit is contained in:
Dan Williams 2016-12-17 15:08:10 -08:00
commit c44ef859ce
14 changed files with 190 additions and 80 deletions
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94
drivers/dax/dax.c
View File

@ -75,6 +75,73 @@ struct dax_dev {
struct resource res[0];
};
static ssize_t id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dax_region *dax_region;
ssize_t rc = -ENXIO;
device_lock(dev);
dax_region = dev_get_drvdata(dev);
if (dax_region)
rc = sprintf(buf, "%d\n", dax_region->id);
device_unlock(dev);
return rc;
}
static DEVICE_ATTR_RO(id);
static ssize_t region_size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dax_region *dax_region;
ssize_t rc = -ENXIO;
device_lock(dev);
dax_region = dev_get_drvdata(dev);
if (dax_region)
rc = sprintf(buf, "%llu\n", (unsigned long long)
resource_size(&dax_region->res));
device_unlock(dev);
return rc;
}
static struct device_attribute dev_attr_region_size = __ATTR(size, 0444,
region_size_show, NULL);
static ssize_t align_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dax_region *dax_region;
ssize_t rc = -ENXIO;
device_lock(dev);
dax_region = dev_get_drvdata(dev);
if (dax_region)
rc = sprintf(buf, "%u\n", dax_region->align);
device_unlock(dev);
return rc;
}
static DEVICE_ATTR_RO(align);
static struct attribute *dax_region_attributes[] = {
&dev_attr_region_size.attr,
&dev_attr_align.attr,
&dev_attr_id.attr,
NULL,
};
static const struct attribute_group dax_region_attribute_group = {
.name = "dax_region",
.attrs = dax_region_attributes,
};
static const struct attribute_group *dax_region_attribute_groups[] = {
&dax_region_attribute_group,
NULL,
};
static struct inode *dax_alloc_inode(struct super_block *sb)
{
return kmem_cache_alloc(dax_cache, GFP_KERNEL);
@ -200,12 +267,31 @@ void dax_region_put(struct dax_region *dax_region)
}
EXPORT_SYMBOL_GPL(dax_region_put);
static void dax_region_unregister(void *region)
{
struct dax_region *dax_region = region;
sysfs_remove_groups(&dax_region->dev->kobj,
dax_region_attribute_groups);
dax_region_put(dax_region);
}
struct dax_region *alloc_dax_region(struct device *parent, int region_id,
struct resource *res, unsigned int align, void *addr,
unsigned long pfn_flags)
{
struct dax_region *dax_region;
/*
* The DAX core assumes that it can store its private data in
* parent->driver_data. This WARN is a reminder / safeguard for
* developers of device-dax drivers.
*/
if (dev_get_drvdata(parent)) {
dev_WARN(parent, "dax core failed to setup private data\n");
return NULL;
}
if (!IS_ALIGNED(res->start, align)
|| !IS_ALIGNED(resource_size(res), align))
return NULL;
@ -214,6 +300,7 @@ struct dax_region *alloc_dax_region(struct device *parent, int region_id,
if (!dax_region)
return NULL;
dev_set_drvdata(parent, dax_region);
memcpy(&dax_region->res, res, sizeof(*res));
dax_region->pfn_flags = pfn_flags;
kref_init(&dax_region->kref);
@ -222,7 +309,14 @@ struct dax_region *alloc_dax_region(struct device *parent, int region_id,
dax_region->align = align;
dax_region->dev = parent;
dax_region->base = addr;
if (sysfs_create_groups(&parent->kobj, dax_region_attribute_groups)) {
kfree(dax_region);
return NULL;;
}
kref_get(&dax_region->kref);
if (devm_add_action_or_reset(parent, dax_region_unregister, dax_region))
return NULL;
return dax_region;
}
EXPORT_SYMBOL_GPL(alloc_dax_region);

3
drivers/dax/pmem.c
View File

@ -89,7 +89,8 @@ static int dax_pmem_probe(struct device *dev)
pfn_sb = nd_pfn->pfn_sb;
if (!devm_request_mem_region(dev, nsio->res.start,
resource_size(&nsio->res), dev_name(dev))) {
resource_size(&nsio->res),
dev_name(&ndns->dev))) {
dev_warn(dev, "could not reserve region %pR\n", &nsio->res);
return -EBUSY;
}

46
drivers/nvdimm/claim.c
View File

@ -22,9 +22,8 @@ void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns)
{
struct nd_namespace_common *ndns = *_ndns;
dev_WARN_ONCE(dev, !mutex_is_locked(&ndns->dev.mutex)
|| ndns->claim != dev,
"%s: invalid claim\n", __func__);
lockdep_assert_held(&ndns->dev.mutex);
dev_WARN_ONCE(dev, ndns->claim != dev, "%s: invalid claim\n", __func__);
ndns->claim = NULL;
*_ndns = NULL;
put_device(&ndns->dev);
@ -49,9 +48,8 @@ bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
{
if (attach->claim)
return false;
dev_WARN_ONCE(dev, !mutex_is_locked(&attach->dev.mutex)
|| *_ndns,
"%s: invalid claim\n", __func__);
lockdep_assert_held(&attach->dev.mutex);
dev_WARN_ONCE(dev, *_ndns, "%s: invalid claim\n", __func__);
attach->claim = dev;
*_ndns = attach;
get_device(&attach->dev);
@ -226,6 +224,12 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
resource_size_t offset, void *buf, size_t size, int rw)
{
struct nd_namespace_io *nsio = to_nd_namespace_io(&ndns->dev);
unsigned int sz_align = ALIGN(size + (offset & (512 - 1)), 512);
sector_t sector = offset >> 9;
int rc = 0;
if (unlikely(!size))
return 0;
if (unlikely(offset + size > nsio->size)) {
dev_WARN_ONCE(&ndns->dev, 1, "request out of range\n");
@ -233,17 +237,31 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
}
if (rw == READ) {
unsigned int sz_align = ALIGN(size + (offset & (512 - 1)), 512);
if (unlikely(is_bad_pmem(&nsio->bb, offset / 512, sz_align)))
if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align)))
return -EIO;
return memcpy_from_pmem(buf, nsio->addr + offset, size);
} else {
memcpy_to_pmem(nsio->addr + offset, buf, size);
nvdimm_flush(to_nd_region(ndns->dev.parent));
}
return 0;
if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) {
if (IS_ALIGNED(offset, 512) && IS_ALIGNED(size, 512)) {
long cleared;
cleared = nvdimm_clear_poison(&ndns->dev, offset, size);
if (cleared < size)
rc = -EIO;
if (cleared > 0 && cleared / 512) {
cleared /= 512;
badblocks_clear(&nsio->bb, sector, cleared);
}
invalidate_pmem(nsio->addr + offset, size);
} else
rc = -EIO;
}
memcpy_to_pmem(nsio->addr + offset, buf, size);
nvdimm_flush(to_nd_region(ndns->dev.parent));
return rc;
}
int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio)
@ -253,7 +271,7 @@ int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio)
nsio->size = resource_size(res);
if (!devm_request_mem_region(dev, res->start, resource_size(res),
dev_name(dev))) {
dev_name(&ndns->dev))) {
dev_warn(dev, "could not reserve region %pR\n", res);
return -EBUSY;
}

29
drivers/nvdimm/core.c
View File

@ -317,35 +317,6 @@ ssize_t nd_sector_size_store(struct device *dev, const char *buf,
}
}
void __nd_iostat_start(struct bio *bio, unsigned long *start)
{
struct gendisk *disk = bio->bi_bdev->bd_disk;
const int rw = bio_data_dir(bio);
int cpu = part_stat_lock();
*start = jiffies;
part_round_stats(cpu, &disk->part0);
part_stat_inc(cpu, &disk->part0, ios[rw]);
part_stat_add(cpu, &disk->part0, sectors[rw], bio_sectors(bio));
part_inc_in_flight(&disk->part0, rw);
part_stat_unlock();
}
EXPORT_SYMBOL(__nd_iostat_start);
void nd_iostat_end(struct bio *bio, unsigned long start)
{
struct gendisk *disk = bio->bi_bdev->bd_disk;
unsigned long duration = jiffies - start;
const int rw = bio_data_dir(bio);
int cpu = part_stat_lock();
part_stat_add(cpu, &disk->part0, ticks[rw], duration);
part_round_stats(cpu, &disk->part0);
part_dec_in_flight(&disk->part0, rw);
part_stat_unlock();
}
EXPORT_SYMBOL(nd_iostat_end);
static ssize_t commands_show(struct device *dev,
struct device_attribute *attr, char *buf)
{

2
drivers/nvdimm/dimm.c
View File

@ -64,6 +64,8 @@ static int nvdimm_probe(struct device *dev)
nd_label_copy(ndd, to_next_namespace_index(ndd),
to_current_namespace_index(ndd));
rc = nd_label_reserve_dpa(ndd);
if (ndd->ns_current >= 0)
nvdimm_set_aliasing(dev);
nvdimm_bus_unlock(dev);
if (rc)

7
drivers/nvdimm/dimm_devs.c
View File

@ -184,6 +184,13 @@ int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
return rc;
}
void nvdimm_set_aliasing(struct device *dev)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
nvdimm->flags |= NDD_ALIASING;
}
static void nvdimm_release(struct device *dev)
{
struct nvdimm *nvdimm = to_nvdimm(dev);

12
drivers/nvdimm/e820.c
View File

@ -84,18 +84,8 @@ static struct platform_driver e820_pmem_driver = {
},
};
static __init int e820_pmem_init(void)
{
return platform_driver_register(&e820_pmem_driver);
}
static __exit void e820_pmem_exit(void)
{
platform_driver_unregister(&e820_pmem_driver);
}
module_platform_driver(e820_pmem_driver);
MODULE_ALIAS("platform:e820_pmem*");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Intel Corporation");
module_init(e820_pmem_init);
module_exit(e820_pmem_exit);

2
drivers/nvdimm/label.c
View File

@ -938,7 +938,7 @@ int nd_pmem_namespace_label_update(struct nd_region *nd_region,
}
for_each_dpa_resource(ndd, res)
if (strncmp(res->name, "pmem", 3) == 0)
if (strncmp(res->name, "pmem", 4) == 0)
count++;
WARN_ON_ONCE(!count);

8
drivers/nvdimm/namespace_devs.c
View File

@ -1132,7 +1132,7 @@ static ssize_t size_show(struct device *dev,
return sprintf(buf, "%llu\n", (unsigned long long)
nvdimm_namespace_capacity(to_ndns(dev)));
}
static DEVICE_ATTR(size, S_IRUGO, size_show, size_store);
static DEVICE_ATTR(size, 0444, size_show, size_store);
static u8 *namespace_to_uuid(struct device *dev)
{
@ -1456,7 +1456,7 @@ static umode_t namespace_visible(struct kobject *kobj,
if (is_namespace_pmem(dev) || is_namespace_blk(dev)) {
if (a == &dev_attr_size.attr)
return S_IWUSR | S_IRUGO;
return 0644;
if (is_namespace_pmem(dev) && a == &dev_attr_sector_size.attr)
return 0;
@ -1653,7 +1653,7 @@ static int select_pmem_id(struct nd_region *nd_region, u8 *pmem_id)
u64 hw_start, hw_end, pmem_start, pmem_end;
struct nd_label_ent *label_ent;
WARN_ON(!mutex_is_locked(&nd_mapping->lock));
lockdep_assert_held(&nd_mapping->lock);
list_for_each_entry(label_ent, &nd_mapping->labels, list) {
nd_label = label_ent->label;
if (!nd_label)
@ -1997,7 +1997,7 @@ struct device *create_namespace_blk(struct nd_region *nd_region,
struct nd_mapping *nd_mapping = &nd_region->mapping[0];
struct nvdimm_drvdata *ndd = to_ndd(nd_mapping);
struct nd_namespace_blk *nsblk;
char *name[NSLABEL_NAME_LEN];
char name[NSLABEL_NAME_LEN];
struct device *dev = NULL;
struct resource *res;

12
drivers/nvdimm/nd.h
View File

@ -238,6 +238,7 @@ int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
void *buf, size_t len);
long nvdimm_clear_poison(struct device *dev, phys_addr_t phys,
unsigned int len);
void nvdimm_set_aliasing(struct device *dev);
struct nd_btt *to_nd_btt(struct device *dev);
struct nd_gen_sb {
@ -377,10 +378,17 @@ static inline bool nd_iostat_start(struct bio *bio, unsigned long *start)
if (!blk_queue_io_stat(disk->queue))
return false;
__nd_iostat_start(bio, start);
*start = jiffies;
generic_start_io_acct(bio_data_dir(bio),
bio_sectors(bio), &disk->part0);
return true;
}
void nd_iostat_end(struct bio *bio, unsigned long start);
static inline void nd_iostat_end(struct bio *bio, unsigned long start)
{
struct gendisk *disk = bio->bi_bdev->bd_disk;
generic_end_io_acct(bio_data_dir(bio), &disk->part0, start);
}
static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector,
unsigned int len)
{

2
drivers/nvdimm/pfn_devs.c
View File

@ -108,7 +108,7 @@ static ssize_t align_show(struct device *dev,
{
struct nd_pfn *nd_pfn = to_nd_pfn_safe(dev);
return sprintf(buf, "%lx\n", nd_pfn->align);
return sprintf(buf, "%ld\n", nd_pfn->align);
}
static ssize_t __align_store(struct nd_pfn *nd_pfn, const char *buf)

21
drivers/nvdimm/pmem.c
View File

@ -53,21 +53,24 @@ static int pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
struct device *dev = to_dev(pmem);
sector_t sector;
long cleared;
int rc = 0;
sector = (offset - pmem->data_offset) / 512;
cleared = nvdimm_clear_poison(dev, pmem->phys_addr + offset, len);
cleared = nvdimm_clear_poison(dev, pmem->phys_addr + offset, len);
if (cleared < len)
rc = -EIO;
if (cleared > 0 && cleared / 512) {
dev_dbg(dev, "%s: %#llx clear %ld sector%s\n",
__func__, (unsigned long long) sector,
cleared / 512, cleared / 512 > 1 ? "s" : "");
badblocks_clear(&pmem->bb, sector, cleared / 512);
} else {
return -EIO;
cleared /= 512;
dev_dbg(dev, "%s: %#llx clear %ld sector%s\n", __func__,
(unsigned long long) sector, cleared,
cleared > 1 ? "s" : "");
badblocks_clear(&pmem->bb, sector, cleared);
}
invalidate_pmem(pmem->virt_addr + offset, len);
return 0;
return rc;
}
static void write_pmem(void *pmem_addr, struct page *page,
@ -270,7 +273,7 @@ static int pmem_attach_disk(struct device *dev,
dev_warn(dev, "unable to guarantee persistence of writes\n");
if (!devm_request_mem_region(dev, res->start, resource_size(res),
dev_name(dev))) {
dev_name(&ndns->dev))) {
dev_warn(dev, "could not reserve region %pR\n", res);
return -EBUSY;
}

2
drivers/nvdimm/region_devs.c
View File

@ -509,7 +509,7 @@ void nd_mapping_free_labels(struct nd_mapping *nd_mapping)
{
struct nd_label_ent *label_ent, *e;
WARN_ON(!mutex_is_locked(&nd_mapping->lock));
lockdep_assert_held(&nd_mapping->lock);
list_for_each_entry_safe(label_ent, e, &nd_mapping->labels, list) {
list_del(&label_ent->list);
kfree(label_ent);

30
tools/testing/nvdimm/test/nfit.c
View File

@ -125,12 +125,13 @@ struct nfit_test_dcr {
(((node & 0xfff) << 16) | ((socket & 0xf) << 12) \
| ((imc & 0xf) << 8) | ((chan & 0xf) << 4) | (dimm & 0xf))
static u32 handle[NUM_DCR] = {
static u32 handle[] = {
[0] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 0),
[1] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 1),
[2] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 0),
[3] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 1),
[4] = NFIT_DIMM_HANDLE(0, 1, 0, 0, 0),
[5] = NFIT_DIMM_HANDLE(1, 0, 0, 0, 0),
};
static unsigned long dimm_fail_cmd_flags[NUM_DCR];
@ -142,6 +143,7 @@ struct nfit_test {
void *nfit_buf;
dma_addr_t nfit_dma;
size_t nfit_size;
int dcr_idx;
int num_dcr;
int num_pm;
void **dimm;
@ -426,11 +428,11 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
break;
case ND_CMD_GET_CONFIG_DATA:
rc = nfit_test_cmd_get_config_data(buf, buf_len,
t->label[i]);
t->label[i - t->dcr_idx]);
break;
case ND_CMD_SET_CONFIG_DATA:
rc = nfit_test_cmd_set_config_data(buf, buf_len,
t->label[i]);
t->label[i - t->dcr_idx]);
break;
case ND_CMD_SMART:
rc = nfit_test_cmd_smart(buf, buf_len);
@ -682,7 +684,7 @@ static int nfit_test0_alloc(struct nfit_test *t)
if (!t->spa_set[2])
return -ENOMEM;
for (i = 0; i < NUM_DCR; i++) {
for (i = 0; i < t->num_dcr; i++) {
t->dimm[i] = test_alloc(t, DIMM_SIZE, &t->dimm_dma[i]);
if (!t->dimm[i])
return -ENOMEM;
@ -699,7 +701,7 @@ static int nfit_test0_alloc(struct nfit_test *t)
return -ENOMEM;
}
for (i = 0; i < NUM_DCR; i++) {
for (i = 0; i < t->num_dcr; i++) {
t->dcr[i] = test_alloc(t, LABEL_SIZE, &t->dcr_dma[i]);
if (!t->dcr[i])
return -ENOMEM;
@ -728,6 +730,7 @@ static int nfit_test1_alloc(struct nfit_test *t)
size_t nfit_size = sizeof(struct acpi_nfit_system_address) * 2
+ sizeof(struct acpi_nfit_memory_map)
+ offsetof(struct acpi_nfit_control_region, window_size);
int i;
t->nfit_buf = test_alloc(t, nfit_size, &t->nfit_dma);
if (!t->nfit_buf)
@ -738,6 +741,13 @@ static int nfit_test1_alloc(struct nfit_test *t)
if (!t->spa_set[0])
return -ENOMEM;
for (i = 0; i < t->num_dcr; i++) {
t->label[i] = test_alloc(t, LABEL_SIZE, &t->label_dma[i]);
if (!t->label[i])
return -ENOMEM;
sprintf(t->label[i], "label%d", i);
}
t->spa_set[1] = test_alloc(t, SPA_VCD_SIZE, &t->spa_set_dma[1]);
if (!t->spa_set[1])
return -ENOMEM;
@ -1450,7 +1460,7 @@ static void nfit_test1_setup(struct nfit_test *t)
memdev = nfit_buf + offset;
memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
memdev->header.length = sizeof(*memdev);
memdev->device_handle = 0;
memdev->device_handle = handle[5];
memdev->physical_id = 0;
memdev->region_id = 0;
memdev->range_index = 0+1;
@ -1472,7 +1482,7 @@ static void nfit_test1_setup(struct nfit_test *t)
window_size);
dcr->region_index = 0+1;
dcr_common_init(dcr);
dcr->serial_number = ~0;
dcr->serial_number = ~handle[5];
dcr->code = NFIT_FIC_BYTE;
dcr->windows = 0;
@ -1483,6 +1493,9 @@ static void nfit_test1_setup(struct nfit_test *t)
set_bit(ND_CMD_ARS_START, &acpi_desc->bus_cmd_force_en);
set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_cmd_force_en);
set_bit(ND_CMD_CLEAR_ERROR, &acpi_desc->bus_cmd_force_en);
set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_cmd_force_en);
set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
}
static int nfit_test_blk_do_io(struct nd_blk_region *ndbr, resource_size_t dpa,
@ -1886,12 +1899,15 @@ static __init int nfit_test_init(void)
switch (i) {
case 0:
nfit_test->num_pm = NUM_PM;
nfit_test->dcr_idx = 0;
nfit_test->num_dcr = NUM_DCR;
nfit_test->alloc = nfit_test0_alloc;
nfit_test->setup = nfit_test0_setup;
break;
case 1:
nfit_test->num_pm = 1;
nfit_test->dcr_idx = NUM_DCR;
nfit_test->num_dcr = 1;
nfit_test->alloc = nfit_test1_alloc;
nfit_test->setup = nfit_test1_setup;
break;