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// 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 "../watermark.h"
#include "nfit_test.h"
#include "ndtest.h"
enum {
DIMM_SIZE = SZ_32M,
LABEL_SIZE = SZ_128K,
NUM_INSTANCES = 2,
NUM_DCR = 4,
};
static struct ndtest_priv *instances[NUM_INSTANCES];
static struct class *ndtest_dimm_class;
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_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:
case ND_CMD_GET_CONFIG_DATA:
case ND_CMD_SET_CONFIG_DATA:
default:
return -EINVAL;
}
return 0;
}
static int ndtest_bus_register(struct ndtest_priv *p)
{
p->bus_desc.ndctl = ndtest_ctl;
p->bus_desc.module = THIS_MODULE;
p->bus_desc.provider_name = NULL;
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 int ndtest_remove(struct platform_device *pdev)
{
struct ndtest_priv *p = to_ndtest_priv(&pdev->dev);
nvdimm_bus_unregister(p->bus);
return 0;
}
static int ndtest_probe(struct platform_device *pdev)
{
struct ndtest_priv *p;
p = to_ndtest_priv(&pdev->dev);
if (ndtest_bus_register(p))
return -ENOMEM;
platform_set_drvdata(pdev, p);
return 0;
}
static const struct platform_device_id ndtest_id[] = {
{ KBUILD_MODNAME },
{ },
};
static struct platform_driver ndtest_driver = {
.probe = ndtest_probe,
.remove = 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_dimm_class)
class_destroy(ndtest_dimm_class);
}
static __init int ndtest_init(void)
{
int rc, i;
pmem_test();
libnvdimm_test();
device_dax_test();
dax_pmem_test();
dax_pmem_core_test();
#ifdef CONFIG_DEV_DAX_PMEM_COMPAT
dax_pmem_compat_test();
#endif
ndtest_dimm_class = class_create(THIS_MODULE, "nfit_test_dimm");
if (IS_ERR(ndtest_dimm_class)) {
rc = PTR_ERR(ndtest_dimm_class);
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_LICENSE("GPL");
MODULE_AUTHOR("IBM Corporation");
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