示例#1
0
文件: pfn_devs.c 项目: guanhe0/kernel
int nd_pfn_probe(struct nd_namespace_common *ndns, void *drvdata)
{
	int rc;
	struct device *dev;
	struct nd_pfn *nd_pfn;
	struct nd_pfn_sb *pfn_sb;
	struct nd_region *nd_region = to_nd_region(ndns->dev.parent);

	if (ndns->force_raw)
		return -ENODEV;

	nvdimm_bus_lock(&ndns->dev);
	dev = __nd_pfn_create(nd_region, NULL, PFN_MODE_NONE, ndns);
	nvdimm_bus_unlock(&ndns->dev);
	if (!dev)
		return -ENOMEM;
	dev_set_drvdata(dev, drvdata);
	pfn_sb = kzalloc(sizeof(*pfn_sb), GFP_KERNEL);
	nd_pfn = to_nd_pfn(dev);
	nd_pfn->pfn_sb = pfn_sb;
	rc = nd_pfn_validate(nd_pfn);
	nd_pfn->pfn_sb = NULL;
	kfree(pfn_sb);
	dev_dbg(&ndns->dev, "%s: pfn: %s\n", __func__,
			rc == 0 ? dev_name(dev) : "<none>");
	if (rc < 0) {
		__nd_detach_ndns(dev, &nd_pfn->ndns);
		put_device(dev);
	} else
		__nd_device_register(&nd_pfn->dev);

	return rc;
}
示例#2
0
文件: btt_devs.c 项目: suntodai/prd
struct device *nd_btt_create(struct nd_region *nd_region)
{
	struct device *dev = __nd_btt_create(nd_region, 0, NULL, NULL);

	if (dev)
		__nd_device_register(dev);
	return dev;
}
示例#3
0
文件: pfn_devs.c 项目: guanhe0/kernel
struct device *nd_pfn_create(struct nd_region *nd_region)
{
	struct device *dev = __nd_pfn_create(nd_region, NULL, PFN_MODE_NONE,
			NULL);

	if (dev)
		__nd_device_register(dev);
	return dev;
}
示例#4
0
struct device *nd_pfn_create(struct nd_region *nd_region)
{
	struct nd_pfn *nd_pfn;
	struct device *dev;

	if (!is_memory(&nd_region->dev))
		return NULL;

	nd_pfn = nd_pfn_alloc(nd_region);
	dev = nd_pfn_devinit(nd_pfn, NULL);

	__nd_device_register(dev);
	return dev;
}
示例#5
0
int nd_pfn_probe(struct device *dev, struct nd_namespace_common *ndns)
{
	int rc;
	struct nd_pfn *nd_pfn;
	struct device *pfn_dev;
	struct nd_pfn_sb *pfn_sb;
	struct nd_region *nd_region = to_nd_region(ndns->dev.parent);

	if (ndns->force_raw)
		return -ENODEV;

	switch (ndns->claim_class) {
	case NVDIMM_CCLASS_NONE:
	case NVDIMM_CCLASS_PFN:
		break;
	default:
		return -ENODEV;
	}

	nvdimm_bus_lock(&ndns->dev);
	nd_pfn = nd_pfn_alloc(nd_region);
	pfn_dev = nd_pfn_devinit(nd_pfn, ndns);
	nvdimm_bus_unlock(&ndns->dev);
	if (!pfn_dev)
		return -ENOMEM;
	pfn_sb = devm_kzalloc(dev, sizeof(*pfn_sb), GFP_KERNEL);
	nd_pfn = to_nd_pfn(pfn_dev);
	nd_pfn->pfn_sb = pfn_sb;
	rc = nd_pfn_validate(nd_pfn, PFN_SIG);
	dev_dbg(dev, "%s: pfn: %s\n", __func__,
			rc == 0 ? dev_name(pfn_dev) : "<none>");
	if (rc < 0) {
		nd_detach_ndns(pfn_dev, &nd_pfn->ndns);
		put_device(pfn_dev);
	} else
		__nd_device_register(pfn_dev);

	return rc;
}
示例#6
0
文件: btt_devs.c 项目: suntodai/prd
static int __nd_btt_probe(struct nd_btt *nd_btt,
		struct nd_namespace_common *ndns, struct btt_sb *btt_sb)
{
	if (!btt_sb || !ndns || !nd_btt)
		return -ENODEV;

	if (nvdimm_read_bytes(ndns, SZ_4K, btt_sb, sizeof(*btt_sb)))
		return -ENXIO;

	if (nvdimm_namespace_capacity(ndns) < SZ_16M)
		return -ENXIO;

	if (!nd_btt_arena_is_valid(nd_btt, btt_sb))
		return -ENODEV;

	nd_btt->lbasize = le32_to_cpu(btt_sb->external_lbasize);
	nd_btt->uuid = kmemdup(btt_sb->uuid, 16, GFP_KERNEL);
	if (!nd_btt->uuid)
		return -ENOMEM;

	__nd_device_register(&nd_btt->dev);

	return 0;
}