This patch exposes the serial number & firmware version in sysfs,
which will be used by ndctl in userspace to help users identify
the device.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
drivers/nvdimm/ocxl/main.c | 42 ++++++++++++++++++++++++++++++++++++--
1 file changed, 40 insertions(+), 2 deletions(-)
diff --git a/drivers/nvdimm/ocxl/main.c b/drivers/nvdimm/ocxl/main.c
index 92b4389e8cbb..1f422f0d51ef 100644
--- a/drivers/nvdimm/ocxl/main.c
+++ b/drivers/nvdimm/ocxl/main.c
@@ -235,6 +235,43 @@ static int reserve_metadata(struct ocxlpmem *ocxlpmem,
return 0;
}
+static ssize_t serial_show(struct device *device, struct device_attribute
*attr,
+ char *buf)
+{
+ struct nvdimm *nvdimm = to_nvdimm(device);
+ struct ocxlpmem *ocxlpmem = nvdimm_provider_data(nvdimm);
+ const struct ocxl_fn_config *fn_config =
ocxl_function_config(ocxlpmem->ocxl_fn);
+
+ return scnprintf(buf, PAGE_SIZE, "%llu\n", fn_config->serial);
+}
+static DEVICE_ATTR_RO(serial);
+
+static ssize_t fw_version_show(struct device *device,
+ struct device_attribute *attr, char *buf)
+{
+ struct nvdimm *nvdimm = to_nvdimm(device);
+ struct ocxlpmem *ocxlpmem = nvdimm_provider_data(nvdimm);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", ocxlpmem->fw_version);
+}
+static DEVICE_ATTR_RO(fw_version);
+
+static struct attribute *ocxl_pmem_attrs[] = {
+ &dev_attr_serial.attr,
+ &dev_attr_fw_version.attr,
+ NULL,
+};
+
+static const struct attribute_group ocxl_pmem_attribute_group = {
+ .name = "ocxlpmem",
+ .attrs = ocxl_pmem_attrs,
+};
+
+static const struct attribute_group *ocxl_pmem_dimm_attribute_groups[] = {
+ &ocxl_pmem_attribute_group,
+ NULL,
+};
+
/**
* register_lpc_mem() - Discover persistent memory on a device and register it
with the NVDIMM subsystem
* @ocxlpmem: the device metadata
@@ -291,8 +328,9 @@ static int register_lpc_mem(struct ocxlpmem *ocxlpmem)
snprintf(serial, sizeof(serial), "%llx", fn_config->serial);
nd_mapping_desc.nvdimm = nvdimm_create(ocxlpmem->nvdimm_bus, ocxlpmem,
- NULL, nvdimm_flags,
- nvdimm_cmd_mask, 0, NULL);
+ ocxl_pmem_dimm_attribute_groups,
+ nvdimm_flags, nvdimm_cmd_mask, 0,
+ NULL);
if (!nd_mapping_desc.nvdimm)
return -ENOMEM;
--
2.24.1
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