--- /dev/null
+// 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,
+ 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 struct class *ndtest_dimm_class;
+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_mapping region2_mapping[] = {
+ {
+ .dimm = 0,
+ .position = 0,
+ .start = 0,
+ .size = DIMM_SIZE,
+ },
+};
+
+static struct ndtest_mapping region3_mapping[] = {
+ {
+ .dimm = 1,
+ .start = 0,
+ .size = DIMM_SIZE,
+ }
+};
+
+static struct ndtest_mapping region4_mapping[] = {
+ {
+ .dimm = 2,
+ .start = 0,
+ .size = DIMM_SIZE,
+ }
+};
+
+static struct ndtest_mapping region5_mapping[] = {
+ {
+ .dimm = 3,
+ .start = 0,
+ .size = DIMM_SIZE,
+ }
+};
+
+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,
+ },
+ {
+ .type = ND_DEVICE_NAMESPACE_BLK,
+ .num_mappings = ARRAY_SIZE(region2_mapping),
+ .mapping = region2_mapping,
+ .size = DIMM_SIZE,
+ .range_index = 3,
+ },
+ {
+ .type = ND_DEVICE_NAMESPACE_BLK,
+ .num_mappings = ARRAY_SIZE(region3_mapping),
+ .mapping = region3_mapping,
+ .size = DIMM_SIZE,
+ .range_index = 4,
+ },
+ {
+ .type = ND_DEVICE_NAMESPACE_BLK,
+ .num_mappings = ARRAY_SIZE(region4_mapping),
+ .mapping = region4_mapping,
+ .size = DIMM_SIZE,
+ .range_index = 5,
+ },
+ {
+ .type = ND_DEVICE_NAMESPACE_BLK,
+ .num_mappings = ARRAY_SIZE(region5_mapping),
+ .mapping = region5_mapping,
+ .size = DIMM_SIZE,
+ .range_index = 6,
+ },
+};
+
+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 int ndtest_blk_do_io(struct nd_blk_region *ndbr, resource_size_t dpa,
+ void *iobuf, u64 len, int rw)
+{
+ struct ndtest_dimm *dimm = ndbr->blk_provider_data;
+ struct ndtest_blk_mmio *mmio = dimm->mmio;
+ struct nd_region *nd_region = &ndbr->nd_region;
+ unsigned int lane;
+
+ if (!mmio)
+ return -ENOMEM;
+
+ lane = nd_region_acquire_lane(nd_region);
+ if (rw)
+ memcpy(mmio->base + dpa, iobuf, len);
+ else {
+ memcpy(iobuf, mmio->base + dpa, len);
+ arch_invalidate_pmem(mmio->base + dpa, len);
+ }
+
+ nd_region_release_lane(nd_region, lane);
+
+ return 0;
+}
+
+static int ndtest_blk_region_enable(struct nvdimm_bus *nvdimm_bus,
+ struct device *dev)
+{
+ struct nd_blk_region *ndbr = to_nd_blk_region(dev);
+ struct nvdimm *nvdimm;
+ struct ndtest_dimm *dimm;
+ struct ndtest_blk_mmio *mmio;
+
+ nvdimm = nd_blk_region_to_dimm(ndbr);
+ dimm = nvdimm_provider_data(nvdimm);
+
+ nd_blk_region_set_provider_data(ndbr, dimm);
+ dimm->blk_region = to_nd_region(dev);
+
+ mmio = devm_kzalloc(dev, sizeof(struct ndtest_blk_mmio), GFP_KERNEL);
+ if (!mmio)
+ return -ENOMEM;
+
+ mmio->base = (void __iomem *) devm_nvdimm_memremap(
+ dev, dimm->address, 12, nd_blk_memremap_flags(ndbr));
+ if (!mmio->base) {
+ dev_err(dev, "%s failed to map blk dimm\n", nvdimm_name(nvdimm));
+ return -ENOMEM;
+ }
+ mmio->size = dimm->size;
+ mmio->base_offset = 0;
+
+ dimm->mmio = mmio;
+
+ 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_blk_region_desc ndbr_desc;
+ struct nd_interleave_set *nd_set;
+ struct nd_region_desc *ndr_desc;
+ struct resource res;
+ int i, ndimm = region->mapping[0].dimm;
+ u64 uuid[2];
+
+ memset(&res, 0, sizeof(res));
+ memset(&mappings, 0, sizeof(mappings));
+ memset(&ndbr_desc, 0, sizeof(ndbr_desc));
+ ndr_desc = &ndbr_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;
+
+ if (region->type == ND_DEVICE_NAMESPACE_BLK) {
+ mappings[0].start = 0;
+ mappings[0].size = DIMM_SIZE;
+ mappings[0].nvdimm = p->config->dimms[ndimm].nvdimm;
+
+ ndr_desc->mapping = &mappings[0];
+ ndr_desc->num_mappings = 1;
+ ndr_desc->num_lanes = 1;
+ ndbr_desc.enable = ndtest_blk_region_enable;
+ ndbr_desc.do_io = ndtest_blk_do_io;
+ region->region = nvdimm_blk_region_create(p->bus, ndr_desc);
+
+ goto done;
+ }
+
+ 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);
+
+done:
+ 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_ALIASING, &dimm_flags);
+ 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 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;
+ 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 = 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);
+
+
+ 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
+
+ nfit_test_setup(ndtest_resource_lookup, NULL);
+
+ 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;
+ }
+
+ 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_LICENSE("GPL");
+MODULE_AUTHOR("IBM Corporation");
projects / platform / kernel / linux-rpi.git / commitdiff