// SPDX-License-Identifier: GPL-2.0-only
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/genalloc.h>
#include <linux/vmalloc.h>
#include <linux/dma-mapping.h>
#include <linux/list_sort.h>
#include <linux/libnvdimm.h>
#include <linux/ndctl.h>
#include <nd-core.h>
#include <linux/printk.h>
#include <linux/seq_buf.h>
#include <linux/papr_scm.h>
#include <uapi/linux/papr_pdsm.h>
#include "../watermark.h"
#include "nfit_test.h"
#include "ndtest.h"
enum {
DIMM_SIZE = SZ_32M,
LABEL_SIZE = SZ_128K,
NUM_INSTANCES = 2,
NUM_DCR = 4,
NDTEST_MAX_MAPPING = 6,
};
#define NDTEST_SCM_DIMM_CMD_MASK \
((1ul << ND_CMD_GET_CONFIG_SIZE) | \
(1ul << ND_CMD_GET_CONFIG_DATA) | \
(1ul << ND_CMD_SET_CONFIG_DATA) | \
(1ul << ND_CMD_CALL))
#define NFIT_DIMM_HANDLE(node, socket, imc, chan, dimm) \
(((node & 0xfff) << 16) | ((socket & 0xf) << 12) \
| ((imc & 0xf) << 8) | ((chan & 0xf) << 4) | (dimm & 0xf))
static DEFINE_SPINLOCK(ndtest_lock);
static struct ndtest_priv *instances[NUM_INSTANCES];
static const struct class ndtest_dimm_class = {
.name = "nfit_test_dimm",
};
static struct gen_pool *ndtest_pool;
static struct ndtest_dimm dimm_group1[] = {
{
.size = DIMM_SIZE,
.handle = NFIT_DIMM_HANDLE(0, 0, 0, 0, 0),
.uuid_str = "1e5c75d2-b618-11ea-9aa3-507b9ddc0f72",
.physical_id = 0,
.num_formats = 2,
},
{
.size = DIMM_SIZE,
.handle = NFIT_DIMM_HANDLE(0, 0, 0, 0, 1),
.uuid_str = "1c4d43ac-b618-11ea-be80-507b9ddc0f72",
.physical_id = 1,
.num_formats = 2,
},
{
.size = DIMM_SIZE,
.handle = NFIT_DIMM_HANDLE(0, 0, 1, 0, 0),
.uuid_str = "a9f17ffc-b618-11ea-b36d-507b9ddc0f72",
.physical_id = 2,
.num_formats = 2,
},
{
.size = DIMM_SIZE,
.handle = NFIT_DIMM_HANDLE(0, 0, 1, 0, 1),
.uuid_str = "b6b83b22-b618-11ea-8aae-507b9ddc0f72",
.physical_id = 3,
.num_formats = 2,
},
{
.size = DIMM_SIZE,
.handle = NFIT_DIMM_HANDLE(0, 1, 0, 0, 0),
.uuid_str = "bf9baaee-b618-11ea-b181-507b9ddc0f72",
.physical_id = 4,
.num_formats = 2,
},
};
static struct ndtest_dimm dimm_group2[] = {
{
.size = DIMM_SIZE,
.handle = NFIT_DIMM_HANDLE(1, 0, 0, 0, 0),
.uuid_str = "ca0817e2-b618-11ea-9db3-507b9ddc0f72",
.physical_id = 0,
.num_formats = 1,
.flags = PAPR_PMEM_UNARMED | PAPR_PMEM_EMPTY |
PAPR_PMEM_SAVE_FAILED | PAPR_PMEM_SHUTDOWN_DIRTY |
PAPR_PMEM_HEALTH_FATAL,
},
};
static struct ndtest_mapping region0_mapping[] = {
{
.dimm = 0,
.position = 0,
.start = 0,
.size = SZ_16M,
},
{
.dimm = 1,
.position = 1,
.start = 0,
.size = SZ_16M,
}
};
static struct ndtest_mapping region1_mapping[] = {
{
.dimm = 0,
.position = 0,
.start = SZ_16M,
.size = SZ_16M,
},
{
.dimm = 1,
.position = 1,
.start = SZ_16M,
.size = SZ_16M,
},
{
.dimm = 2,
.position = 2,
.start = SZ_16M,
.size = SZ_16M,
},
{
.dimm = 3,
.position = 3,
.start = SZ_16M,
.size = SZ_16M,
},
};
static struct ndtest_region bus0_regions[] = {
{
.type = ND_DEVICE_NAMESPACE_PMEM,
.num_mappings = ARRAY_SIZE(region0_mapping),
.mapping = region0_mapping,
.size = DIMM_SIZE,
.range_index = 1,
},
{
.type = ND_DEVICE_NAMESPACE_PMEM,
.num_mappings = ARRAY_SIZE(region1_mapping),
.mapping = region1_mapping,
.size = DIMM_SIZE * 2,
.range_index = 2,
},
};
static struct ndtest_mapping region6_mapping[] = {
{
.dimm = 0,
.position = 0,
.start = 0,
.size = DIMM_SIZE,
},
};
static struct ndtest_region bus1_regions[] = {
{
.type = ND_DEVICE_NAMESPACE_IO,
.num_mappings = ARRAY_SIZE(region6_mapping),
.mapping = region6_mapping,
.size = DIMM_SIZE,
.range_index = 1,
},
};
static struct ndtest_config bus_configs[NUM_INSTANCES] = {
/* bus 1 */
{
.dimm_start = 0,
.dimm_count = ARRAY_SIZE(dimm_group1),
.dimms = dimm_group1,
.regions = bus0_regions,
.num_regions = ARRAY_SIZE(bus0_regions),
},
/* bus 2 */
{
.dimm_start = ARRAY_SIZE(dimm_group1),
.dimm_count = ARRAY_SIZE(dimm_group2),
.dimms = dimm_group2,
.regions = bus1_regions,
.num_regions = ARRAY_SIZE(bus1_regions),
},
};
static inline struct ndtest_priv *to_ndtest_priv(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
return container_of(pdev, struct ndtest_priv, pdev);
}
static int ndtest_config_get(struct ndtest_dimm *p, unsigned int buf_len,
struct nd_cmd_get_config_data_hdr *hdr)
{
unsigned int len;
if ((hdr->in_offset + hdr->in_length) > LABEL_SIZE)
return -EINVAL;
hdr->status = 0;
len = min(hdr->in_length, LABEL_SIZE - hdr->in_offset);
memcpy(hdr->out_buf, p->label_area + hdr->in_offset, len);
return buf_len - len;
}
static int ndtest_config_set(struct ndtest_dimm *p, unsigned int buf_len,
struct nd_cmd_set_config_hdr *hdr)
{
unsigned int len;
if ((hdr->in_offset + hdr->in_length) > LABEL_SIZE)
return -EINVAL;
len = min(hdr->in_length, LABEL_SIZE - hdr->in_offset);
memcpy(p->label_area + hdr->in_offset, hdr->in_buf, len);
return buf_len - len;
}
static int ndtest_get_config_size(struct ndtest_dimm *dimm, unsigned int buf_len,
struct nd_cmd_get_config_size *size)
{
size->status = 0;
size->max_xfer = 8;
size->config_size = dimm->config_size;
return 0;
}
static int ndtest_ctl(struct nvdimm_bus_descriptor *nd_desc,
struct nvdimm *nvdimm, unsigned int cmd, void *buf,
unsigned int buf_len, int *cmd_rc)
{
struct ndtest_dimm *dimm;
int _cmd_rc;
if (!cmd_rc)
cmd_rc = &_cmd_rc;
*cmd_rc = 0;
if (!nvdimm)
return -EINVAL;
dimm = nvdimm_provider_data(nvdimm);
if (!dimm)
return -EINVAL;
switch (cmd) {
case ND_CMD_GET_CONFIG_SIZE:
*cmd_rc = ndtest_get_config_size(dimm, buf_len, buf);
break;
case ND_CMD_GET_CONFIG_DATA:
*cmd_rc = ndtest_config_get(dimm, buf_len, buf);
break;
case ND_CMD_SET_CONFIG_DATA:
*cmd_rc = ndtest_config_set(dimm, buf_len, buf);
break;
default:
return -EINVAL;
}
/* Failures for a DIMM can be injected using fail_cmd and
* fail_cmd_code, see the device attributes below
*/
if ((1 << cmd) & dimm->fail_cmd)
return dimm->fail_cmd_code ? dimm->fail_cmd_code : -EIO;
return 0;
}
static struct nfit_test_resource *ndtest_resource_lookup(resource_size_t addr)
{
int i;
for (i = 0; i < NUM_INSTANCES; i++) {
struct nfit_test_resource *n, *nfit_res = NULL;
struct ndtest_priv *t = instances[i];
if (!t)
continue;
spin_lock(&ndtest_lock);
list_for_each_entry(n, &t->resources, list) {
if (addr >= n->res.start && (addr < n->res.start
+ resource_size(&n->res))) {
nfit_res = n;
break;
} else if (addr >= (unsigned long) n->buf
&& (addr < (unsigned long) n->buf
+ resource_size(&n->res))) {
nfit_res = n;
break;
}
}
spin_unlock(&ndtest_lock);
if (nfit_res)
return nfit_res;
}
pr_warn("Failed to get resource\n");
return NULL;
}
static void ndtest_release_resource(void *data)
{
struct nfit_test_resource *res = data;
spin_lock(&ndtest_lock);
list_del(&res->list);
spin_unlock(&ndtest_lock);
if (resource_size(&res->res) >= DIMM_SIZE)
gen_pool_free(ndtest_pool, res->res.start,
resource_size(&res->res));
vfree(res->buf);
kfree(res);
}
static void *ndtest_alloc_resource(struct ndtest_priv *p, size_t size,
dma_addr_t *dma)
{
dma_addr_t __dma;
void *buf;
struct nfit_test_resource *res;
struct genpool_data_align data = {
.align = SZ_128M,
};
res = kzalloc(sizeof(*res), GFP_KERNEL);
if (!res)
return NULL;
buf = vmalloc(size);
if (size >= DIMM_SIZE)
__dma = gen_pool_alloc_algo(ndtest_pool, size,
gen_pool_first_fit_align, &data);
else
__dma = (unsigned long) buf;
if (!__dma)
goto buf_err;
INIT_LIST_HEAD(&res->list);
res->dev = &p->pdev.dev;
res->buf = buf;
res->res.start = __dma;
res->res.end = __dma + size - 1;
res->res.name = "NFIT";
spin_lock_init(&res->lock);
INIT_LIST_HEAD(&res->requests);
spin_lock(&ndtest_lock);
list_add(&res->list, &p->resources);
spin_unlock(&ndtest_lock);
if (dma)
*dma = __dma;
if (!devm_add_action(&p->pdev.dev, ndtest_release_resource, res))
return res->buf;
buf_err:
if (__dma && size >= DIMM_SIZE)
gen_pool_free(ndtest_pool, __dma, size);
if (buf)
vfree(buf);
kfree(res);
return NULL;
}
static ssize_t range_index_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nd_region *nd_region = to_nd_region(dev);
struct ndtest_region *region = nd_region_provider_data(nd_region);
return sprintf(buf, "%d\n", region->range_index);
}
static DEVICE_ATTR_RO(range_index);
static struct attribute *ndtest_region_attributes[] = {
&dev_attr_range_index.attr,
NULL,
};
static const struct attribute_group ndtest_region_attribute_group = {
.name = "papr",
.attrs = ndtest_region_attributes,
};
static const struct attribute_group *ndtest_region_attribute_groups[] = {
&ndtest_region_attribute_group,
NULL,
};
static int ndtest_create_region(struct ndtest_priv *p,
struct ndtest_region *region)
{
struct nd_mapping_desc mappings[NDTEST_MAX_MAPPING];
struct nd_region_desc *ndr_desc, _ndr_desc;
struct nd_interleave_set *nd_set;
struct resource res;
int i, ndimm = region->mapping[0].dimm;
u64 uuid[2];
memset(&res, 0, sizeof(res));
memset(&mappings, 0, sizeof(mappings));
memset(&_ndr_desc, 0, sizeof(_ndr_desc));
ndr_desc = &_ndr_desc;
if (!ndtest_alloc_resource(p, region->size, &res.start))
return -ENOMEM;
res.end = res.start + region->size - 1;
ndr_desc->mapping = mappings;
ndr_desc->res = &res;
ndr_desc->provider_data = region;
ndr_desc->attr_groups = ndtest_region_attribute_groups;
if (uuid_parse(p->config->dimms[ndimm].uuid_str, (uuid_t *)uuid)) {
pr_err("failed to parse UUID\n");
return -ENXIO;
}
nd_set = devm_kzalloc(&p->pdev.dev, sizeof(*nd_set), GFP_KERNEL);
if (!nd_set)
return -ENOMEM;
nd_set->cookie1 = cpu_to_le64(uuid[0]);
nd_set->cookie2 = cpu_to_le64(uuid[1]);
nd_set->altcookie = nd_set->cookie1;
ndr_desc->nd_set = nd_set;
for (i = 0; i < region->num_mappings; i++) {
ndimm = region->mapping[i].dimm;
mappings[i].start = region->mapping[i].start;
mappings[i].size = region->mapping[i].size;
mappings[i].position = region->mapping[i].position;
mappings[i].nvdimm = p->config->dimms[ndimm].nvdimm;
}
ndr_desc->num_mappings = region->num_mappings;
region->region = nvdimm_pmem_region_create(p->bus, ndr_desc);
if (!region->region) {
dev_err(&p->pdev.dev, "Error registering region %pR\n",
ndr_desc->res);
return -ENXIO;
}
return 0;
}
static int ndtest_init_regions(struct ndtest_priv *p)
{
int i, ret = 0;
for (i = 0; i < p->config->num_regions; i++) {
ret = ndtest_create_region(p, &p->config->regions[i]);
if (ret)
return ret;
}
return 0;
}
static void put_dimms(void *data)
{
struct ndtest_priv *p = data;
int i;
for (i = 0; i < p->config->dimm_count; i++)
if (p->config->dimms[i].dev) {
device_unregister(p->config->dimms[i].dev);
p->config->dimms[i].dev = NULL;
}
}
static ssize_t handle_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct ndtest_dimm *dimm = dev_get_drvdata(dev);
return sprintf(buf, "%#x\n", dimm->handle);
}
static DEVICE_ATTR_RO(handle);
static ssize_t fail_cmd_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct ndtest_dimm *dimm = dev_get_drvdata(dev);
return sprintf(buf, "%#x\n", dimm->fail_cmd);
}
static ssize_t fail_cmd_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t size)
{
struct ndtest_dimm *dimm = dev_get_drvdata(dev);
unsigned long val;
ssize_t rc;
rc = kstrtol(buf, 0, &val);
if (rc)
return rc;
dimm->fail_cmd = val;
return size;
}
static DEVICE_ATTR_RW(fail_cmd);
static ssize_t fail_cmd_code_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct ndtest_dimm *dimm = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", dimm->fail_cmd_code);
}
static ssize_t fail_cmd_code_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t size)
{
struct ndtest_dimm *dimm = dev_get_drvdata(dev);
unsigned long val;
ssize_t rc;
rc = kstrtol(buf, 0, &val);
if (rc)
return rc;
dimm->fail_cmd_code = val;
return size;
}
static DEVICE_ATTR_RW(fail_cmd_code);
static struct attribute *dimm_attributes[] = {
&dev_attr_handle.attr,
&dev_attr_fail_cmd.attr,
&dev_attr_fail_cmd_code.attr,
NULL,
};
static struct attribute_group dimm_attribute_group = {
.attrs = dimm_attributes,
};
static const struct attribute_group *dimm_attribute_groups[] = {
&dimm_attribute_group,
NULL,
};
static ssize_t phys_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
struct ndtest_dimm *dimm = nvdimm_provider_data(nvdimm);
return sprintf(buf, "%#x\n", dimm->physical_id);
}
static DEVICE_ATTR_RO(phys_id);
static ssize_t vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "0x1234567\n");
}
static DEVICE_ATTR_RO(vendor);
static ssize_t id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
struct ndtest_dimm *dimm = nvdimm_provider_data(nvdimm);
return sprintf(buf, "%04x-%02x-%04x-%08x", 0xabcd,
0xa, 2016, ~(dimm->handle));
}
static DEVICE_ATTR_RO(id);
static ssize_t nvdimm_handle_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
struct ndtest_dimm *dimm = nvdimm_provider_data(nvdimm);
return sprintf(buf, "%#x\n", dimm->handle);
}
static struct device_attribute dev_attr_nvdimm_show_handle = {
.attr = { .name = "handle", .mode = 0444 },
.show = nvdimm_handle_show,
};
static ssize_t subsystem_vendor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "0x%04x\n", 0);
}
static DEVICE_ATTR_RO(subsystem_vendor);
static ssize_t dirty_shutdown_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", 42);
}
static DEVICE_ATTR_RO(dirty_shutdown);
static ssize_t formats_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
struct ndtest_dimm *dimm = nvdimm_provider_data(nvdimm);
return sprintf(buf, "%d\n", dimm->num_formats);
}
static DEVICE_ATTR_RO(formats);
static ssize_t format_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
struct ndtest_dimm *dimm = nvdimm_provider_data(nvdimm);
if (dimm->num_formats > 1)
return sprintf(buf, "0x201\n");
return sprintf(buf, "0x101\n");
}
static DEVICE_ATTR_RO(format);
static ssize_t format1_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "0x301\n");
}
static DEVICE_ATTR_RO(format1);
static umode_t ndtest_nvdimm_attr_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvdimm *nvdimm = to_nvdimm(dev);
struct ndtest_dimm *dimm = nvdimm_provider_data(nvdimm);
if (a == &dev_attr_format1.attr && dimm->num_formats <= 1)
return 0;
return a->mode;
}
static ssize_t flags_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
struct ndtest_dimm *dimm = nvdimm_provider_data(nvdimm);
struct seq_buf s;
u64 flags;
flags = dimm->flags;
seq_buf_init(&s, buf, PAGE_SIZE);
if (flags & PAPR_PMEM_UNARMED_MASK)
seq_buf_printf(&s, "not_armed ");
if (flags & PAPR_PMEM_BAD_SHUTDOWN_MASK)
seq_buf_printf(&s, "flush_fail ");
if (flags & PAPR_PMEM_BAD_RESTORE_MASK)
seq_buf_printf(&s, "restore_fail ");
if (flags & PAPR_PMEM_SAVE_MASK)
seq_buf_printf(&s, "save_fail ");
if (flags & PAPR_PMEM_SMART_EVENT_MASK)
seq_buf_printf(&s, "smart_notify ");
if (seq_buf_used(&s))
seq_buf_printf(&s, "\n");
return seq_buf_used(&s);
}
static DEVICE_ATTR_RO(flags);
static struct attribute *ndtest_nvdimm_attributes[] = {
&dev_attr_nvdimm_show_handle.attr,
&dev_attr_vendor.attr,
&dev_attr_id.attr,
&dev_attr_phys_id.attr,
&dev_attr_subsystem_vendor.attr,
&dev_attr_dirty_shutdown.attr,
&dev_attr_formats.attr,
&dev_attr_format.attr,
&dev_attr_format1.attr,
&dev_attr_flags.attr,
NULL,
};
static const struct attribute_group ndtest_nvdimm_attribute_group = {
.name = "papr",
.attrs = ndtest_nvdimm_attributes,
.is_visible = ndtest_nvdimm_attr_visible,
};
static const struct attribute_group *ndtest_nvdimm_attribute_groups[] = {
&ndtest_nvdimm_attribute_group,
NULL,
};
static int ndtest_dimm_register(struct ndtest_priv *priv,
struct ndtest_dimm *dimm, int id)
{
struct device *dev = &priv->pdev.dev;
unsigned long dimm_flags = dimm->flags;
if (dimm->num_formats > 1)
set_bit(NDD_LABELING, &dimm_flags);
if (dimm->flags & PAPR_PMEM_UNARMED_MASK)
set_bit(NDD_UNARMED, &dimm_flags);
dimm->nvdimm = nvdimm_create(priv->bus, dimm,
ndtest_nvdimm_attribute_groups, dimm_flags,
NDTEST_SCM_DIMM_CMD_MASK, 0, NULL);
if (!dimm->nvdimm) {
dev_err(dev, "Error creating DIMM object for %pOF\n", priv->dn);
return -ENXIO;
}
dimm->dev = device_create_with_groups(&ndtest_dimm_class,
&priv->pdev.dev,
0, dimm, dimm_attribute_groups,
"test_dimm%d", id);
if (!dimm->dev) {
pr_err("Could not create dimm device attributes\n");
return -ENOMEM;
}
return 0;
}
static int ndtest_nvdimm_init(struct ndtest_priv *p)
{
struct ndtest_dimm *d;
void *res;
int i, id;
for (i = 0; i < p->config->dimm_count; i++) {
d = &p->config->dimms[i];
d->id = id = p->config->dimm_start + i;
res = ndtest_alloc_resource(p, LABEL_SIZE, NULL);
if (!res)
return -ENOMEM;
d->label_area = res;
sprintf(d->label_area, "label%d", id);
d->config_size = LABEL_SIZE;
if (!ndtest_alloc_resource(p, d->size,
&p->dimm_dma[id]))
return -ENOMEM;
if (!ndtest_alloc_resource(p, LABEL_SIZE,
&p->label_dma[id]))
return -ENOMEM;
if (!ndtest_alloc_resource(p, LABEL_SIZE,
&p->dcr_dma[id]))
return -ENOMEM;
d->address = p->dimm_dma[id];
ndtest_dimm_register(p, d, id);
}
return 0;
}
static ssize_t compatible_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "nvdimm_test");
}
static DEVICE_ATTR_RO(compatible);
static struct attribute *of_node_attributes[] = {
&dev_attr_compatible.attr,
NULL
};
static const struct attribute_group of_node_attribute_group = {
.name = "of_node",
.attrs = of_node_attributes,
};
static const struct attribute_group *ndtest_attribute_groups[] = {
&of_node_attribute_group,
NULL,
};
static int ndtest_bus_register(struct ndtest_priv *p)
{
p->config = &bus_configs[p->pdev.id];
p->bus_desc.ndctl = ndtest_ctl;
p->bus_desc.module = THIS_MODULE;
p->bus_desc.provider_name = NULL;
p->bus_desc.attr_groups = ndtest_attribute_groups;
p->bus = nvdimm_bus_register(&p->pdev.dev, &p->bus_desc);
if (!p->bus) {
dev_err(&p->pdev.dev, "Error creating nvdimm bus %pOF\n", p->dn);
return -ENOMEM;
}
return 0;
}
static void ndtest_remove(struct platform_device *pdev)
{
struct ndtest_priv *p = to_ndtest_priv(&pdev->dev);
nvdimm_bus_unregister(p->bus);
}
static int ndtest_probe(struct platform_device *pdev)
{
struct ndtest_priv *p;
int rc;
p = to_ndtest_priv(&pdev->dev);
if (ndtest_bus_register(p))
return -ENOMEM;
p->dcr_dma = devm_kcalloc(&p->pdev.dev, NUM_DCR,
sizeof(dma_addr_t), GFP_KERNEL);
p->label_dma = devm_kcalloc(&p->pdev.dev, NUM_DCR,
sizeof(dma_addr_t), GFP_KERNEL);
p->dimm_dma = devm_kcalloc(&p->pdev.dev, NUM_DCR,
sizeof(dma_addr_t), GFP_KERNEL);
rc = ndtest_nvdimm_init(p);
if (rc)
goto err;
rc = ndtest_init_regions(p);
if (rc)
goto err;
rc = devm_add_action_or_reset(&pdev->dev, put_dimms, p);
if (rc)
goto err;
platform_set_drvdata(pdev, p);
return 0;
err:
pr_err("%s:%d Failed nvdimm init\n", __func__, __LINE__);
return rc;
}
static const struct platform_device_id ndtest_id[] = {
{ KBUILD_MODNAME },
{ },
};
static struct platform_driver ndtest_driver = {
.probe = ndtest_probe,
.remove_new = ndtest_remove,
.driver = {
.name = KBUILD_MODNAME,
},
.id_table = ndtest_id,
};
static void ndtest_release(struct device *dev)
{
struct ndtest_priv *p = to_ndtest_priv(dev);
kfree(p);
}
static void cleanup_devices(void)
{
int i;
for (i = 0; i < NUM_INSTANCES; i++)
if (instances[i])
platform_device_unregister(&instances[i]->pdev);
nfit_test_teardown();
if (ndtest_pool)
gen_pool_destroy(ndtest_pool);
class_unregister(&ndtest_dimm_class);
}
static __init int ndtest_init(void)
{
int rc, i;
pmem_test();
libnvdimm_test();
device_dax_test();
dax_pmem_test();
nfit_test_setup(ndtest_resource_lookup, NULL);
rc = class_register(&ndtest_dimm_class);
if (rc)
goto err_register;
ndtest_pool = gen_pool_create(ilog2(SZ_4M), NUMA_NO_NODE);
if (!ndtest_pool) {
rc = -ENOMEM;
goto err_register;
}
if (gen_pool_add(ndtest_pool, SZ_4G, SZ_4G, NUMA_NO_NODE)) {
rc = -ENOMEM;
goto err_register;
}
/* Each instance can be taken as a bus, which can have multiple dimms */
for (i = 0; i < NUM_INSTANCES; i++) {
struct ndtest_priv *priv;
struct platform_device *pdev;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
rc = -ENOMEM;
goto err_register;
}
INIT_LIST_HEAD(&priv->resources);
pdev = &priv->pdev;
pdev->name = KBUILD_MODNAME;
pdev->id = i;
pdev->dev.release = ndtest_release;
rc = platform_device_register(pdev);
if (rc) {
put_device(&pdev->dev);
goto err_register;
}
get_device(&pdev->dev);
instances[i] = priv;
}
rc = platform_driver_register(&ndtest_driver);
if (rc)
goto err_register;
return 0;
err_register:
pr_err("Error registering platform device\n");
cleanup_devices();
return rc;
}
static __exit void ndtest_exit(void)
{
cleanup_devices();
platform_driver_unregister(&ndtest_driver);
}
module_init(ndtest_init);
module_exit(ndtest_exit);
MODULE_DESCRIPTION("Test non-NFIT devices");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("IBM Corporation");
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