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Date: Wed, 06 Apr 2016 17:53:49 -0700
From: Dan Williams <dan.j.williams@...el.com>
To: linux-nvdimm@...ts.01.org
Cc: linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] libnvdimm, test: add mock SMART data payload
Provide simulated SMART data to enable the ndctl implementation of SMART
data retrieval and parsing.
The payload is defined here, "Section 4.1 SMART and Health Info
(Function Index 1)":
http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
drivers/nvdimm/bus.c | 2 ++
include/uapi/linux/ndctl.h | 31 ++++++++++++++++++++++++++++++-
tools/testing/nvdimm/test/nfit.c | 25 +++++++++++++++++++++++++
3 files changed, 57 insertions(+), 1 deletion(-)
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 19f822d7f652..ea805ac641e2 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -783,6 +783,8 @@ int __init nvdimm_bus_init(void)
{
int rc;
+ BUILD_BUG_ON(sizeof(struct nd_smart_payload) != 128);
+
rc = bus_register(&nvdimm_bus_type);
if (rc)
return rc;
diff --git a/include/uapi/linux/ndctl.h b/include/uapi/linux/ndctl.h
index 7cc28ab05b87..f6747b90db90 100644
--- a/include/uapi/linux/ndctl.h
+++ b/include/uapi/linux/ndctl.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2015, Intel Corporation.
+ * Copyright (c) 2014-2016, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU Lesser General Public License,
@@ -20,6 +20,35 @@ struct nd_cmd_smart {
__u8 data[128];
} __packed;
+enum {
+ ND_SMART_HEALTH_VALID = 1 << 0,
+ ND_SMART_TEMP_VALID = 1 << 1,
+ ND_SMART_SPARES_VALID = 1 << 2,
+ ND_SMART_ALARM_VALID = 1 << 3,
+ ND_SMART_USED_VALID = 1 << 4,
+ ND_SMART_SHUTDOWN_VALID = 1 << 5,
+ ND_SMART_VENDOR_VALID = 1 << 6,
+ ND_SMART_TEMP_TRIP = 1 << 0,
+ ND_SMART_SPARE_TRIP = 1 << 1,
+ ND_SMART_NON_CRITICAL_HEALTH = 1 << 0,
+ ND_SMART_CRITICAL_HEALTH = 1 << 1,
+ ND_SMART_FATAL_HEALTH = 1 << 2,
+};
+
+struct nd_smart_payload {
+ __u32 flags;
+ __u8 reserved0[4];
+ __u8 health;
+ __u16 temperature;
+ __u8 spares;
+ __u8 alarm_flags;
+ __u8 life_used;
+ __u8 shutdown_state;
+ __u8 reserved1;
+ __u32 vendor_size;
+ __u8 vendor_data[108];
+} __packed;
+
struct nd_cmd_smart_threshold {
__u32 status;
__u8 data[8];
diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index 3187322eeed7..54c9f3cc3d34 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -330,6 +330,27 @@ static int nfit_test_cmd_clear_error(struct nd_cmd_clear_error *clear_err,
return 0;
}
+static int nfit_test_cmd_smart(struct nd_cmd_smart *smart, unsigned int buf_len)
+{
+ static const struct nd_smart_payload smart_data = {
+ .flags = ND_SMART_HEALTH_VALID | ND_SMART_TEMP_VALID
+ | ND_SMART_SPARES_VALID | ND_SMART_ALARM_VALID
+ | ND_SMART_USED_VALID | ND_SMART_SHUTDOWN_VALID,
+ .health = ND_SMART_NON_CRITICAL_HEALTH,
+ .temperature = 23 * 16,
+ .spares = 75,
+ .alarm_flags = ND_SMART_SPARE_TRIP | ND_SMART_TEMP_TRIP,
+ .life_used = 5,
+ .shutdown_state = 0,
+ .vendor_size = 0,
+ };
+
+ if (buf_len < sizeof(*smart))
+ return -EINVAL;
+ memcpy(smart->data, &smart_data, sizeof(*smart));
+ return 0;
+}
+
static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
struct nvdimm *nvdimm, unsigned int cmd, void *buf,
unsigned int buf_len, int *cmd_rc)
@@ -368,6 +389,9 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
rc = nfit_test_cmd_set_config_data(buf, buf_len,
t->label[i]);
break;
+ case ND_CMD_SMART:
+ rc = nfit_test_cmd_smart(buf, buf_len);
+ break;
default:
return -ENOTTY;
}
@@ -1254,6 +1278,7 @@ static void nfit_test0_setup(struct nfit_test *t)
set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_dsm_force_en);
set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_dsm_force_en);
set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_dsm_force_en);
+ set_bit(ND_CMD_SMART, &acpi_desc->dimm_dsm_force_en);
set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_dsm_force_en);
set_bit(ND_CMD_ARS_START, &acpi_desc->bus_dsm_force_en);
set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_dsm_force_en);
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