Commit cdd77d3e authored by Dan Williams's avatar Dan Williams
Browse files

nfit, libnvdimm: deprecate the generic SMART ioctl

The kernel's ND_IOCTL_SMART_THRESHOLD command is based on a payload
definition that has become broken / out-of-sync with recent versions of
the NVDIMM_FAMILY_INTEL definition. Deprecate the use of the
ND_IOCTL_SMART_THRESHOLD command in favor of the ND_CMD_CALL approach
taken by NVDIMM_FAMILY_{HPE,MSFT}, where we can manage the per-vendor
variance in userspace.

In a couple years, when the new scheme is widely deployed in userspace
packages, the ND_IOCTL_SMART_THRESHOLD support can be removed. For now
we prevent new binaries from compiling against the kernel header
definitions, but kernel still compatible with old binaries. The
libndctl.h [1] header is now the authoritative interface definition for
NVDIMM SMART.

[1]: https://github.com/pmem/ndctl


Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent ae64f9bd
......@@ -1142,9 +1142,6 @@ int __init nvdimm_bus_init(void)
{
int rc;
BUILD_BUG_ON(sizeof(struct nd_smart_payload) != 128);
BUILD_BUG_ON(sizeof(struct nd_smart_threshold_payload) != 8);
rc = bus_register(&nvdimm_bus_type);
if (rc)
return rc;
......
......@@ -15,54 +15,6 @@
#include <linux/types.h>
struct nd_cmd_smart {
__u32 status;
__u8 data[128];
} __packed;
#define ND_SMART_HEALTH_VALID (1 << 0)
#define ND_SMART_SPARES_VALID (1 << 1)
#define ND_SMART_USED_VALID (1 << 2)
#define ND_SMART_TEMP_VALID (1 << 3)
#define ND_SMART_CTEMP_VALID (1 << 4)
#define ND_SMART_ALARM_VALID (1 << 9)
#define ND_SMART_SHUTDOWN_VALID (1 << 10)
#define ND_SMART_VENDOR_VALID (1 << 11)
#define ND_SMART_SPARE_TRIP (1 << 0)
#define ND_SMART_TEMP_TRIP (1 << 1)
#define ND_SMART_CTEMP_TRIP (1 << 2)
#define ND_SMART_NON_CRITICAL_HEALTH (1 << 0)
#define ND_SMART_CRITICAL_HEALTH (1 << 1)
#define ND_SMART_FATAL_HEALTH (1 << 2)
struct nd_smart_payload {
__u32 flags;
__u8 reserved0[4];
__u8 health;
__u8 spares;
__u8 life_used;
__u8 alarm_flags;
__u16 temperature;
__u16 ctrl_temperature;
__u8 reserved1[15];
__u8 shutdown_state;
__u32 vendor_size;
__u8 vendor_data[92];
} __packed;
struct nd_cmd_smart_threshold {
__u32 status;
__u8 data[8];
} __packed;
struct nd_smart_threshold_payload {
__u8 alarm_control;
__u8 reserved0;
__u16 temperature;
__u8 spares;
__u8 reserved[3];
} __packed;
struct nd_cmd_dimm_flags {
__u32 status;
__u32 flags;
......@@ -211,12 +163,6 @@ static inline const char *nvdimm_cmd_name(unsigned cmd)
#define ND_IOCTL 'N'
#define ND_IOCTL_SMART _IOWR(ND_IOCTL, ND_CMD_SMART,\
struct nd_cmd_smart)
#define ND_IOCTL_SMART_THRESHOLD _IOWR(ND_IOCTL, ND_CMD_SMART_THRESHOLD,\
struct nd_cmd_smart_threshold)
#define ND_IOCTL_DIMM_FLAGS _IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS,\
struct nd_cmd_dimm_flags)
......
......@@ -440,39 +440,50 @@ static int nfit_test_cmd_translate_spa(struct nvdimm_bus *bus,
return 0;
}
static int nfit_test_cmd_smart(struct nd_cmd_smart *smart, unsigned int buf_len)
static int nfit_test_cmd_smart(struct nd_intel_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,
static const struct nd_intel_smart smart_data = {
.flags = ND_INTEL_SMART_HEALTH_VALID
| ND_INTEL_SMART_SPARES_VALID
| ND_INTEL_SMART_ALARM_VALID
| ND_INTEL_SMART_USED_VALID
| ND_INTEL_SMART_SHUTDOWN_VALID
| ND_INTEL_SMART_MTEMP_VALID,
.health = ND_INTEL_SMART_NON_CRITICAL_HEALTH,
.media_temperature = 23 * 16,
.ctrl_temperature = 30 * 16,
.pmic_temperature = 40 * 16,
.spares = 75,
.alarm_flags = ND_SMART_SPARE_TRIP | ND_SMART_TEMP_TRIP,
.alarm_flags = ND_INTEL_SMART_SPARE_TRIP
| ND_INTEL_SMART_TEMP_TRIP,
.ait_status = 1,
.life_used = 5,
.shutdown_state = 0,
.vendor_size = 0,
.shutdown_count = 100,
};
if (buf_len < sizeof(*smart))
return -EINVAL;
memcpy(smart->data, &smart_data, sizeof(smart_data));
memcpy(smart, &smart_data, sizeof(smart_data));
return 0;
}
static int nfit_test_cmd_smart_threshold(struct nd_cmd_smart_threshold *smart_t,
static int nfit_test_cmd_smart_threshold(
struct nd_intel_smart_threshold *smart_t,
unsigned int buf_len)
{
static const struct nd_smart_threshold_payload smart_t_data = {
.alarm_control = ND_SMART_SPARE_TRIP | ND_SMART_TEMP_TRIP,
.temperature = 40 * 16,
static const struct nd_intel_smart_threshold smart_t_data = {
.alarm_control = ND_INTEL_SMART_SPARE_TRIP
| ND_INTEL_SMART_TEMP_TRIP,
.media_temperature = 40 * 16,
.ctrl_temperature = 30 * 16,
.spares = 5,
};
if (buf_len < sizeof(*smart_t))
return -EINVAL;
memcpy(smart_t->data, &smart_t_data, sizeof(smart_t_data));
memcpy(smart_t, &smart_t_data, sizeof(smart_t_data));
return 0;
}
......
......@@ -84,6 +84,65 @@ struct nd_cmd_ars_err_inj_stat {
} __packed record[0];
} __packed;
#define ND_INTEL_SMART 1
#define ND_INTEL_SMART_THRESHOLD 2
#define ND_INTEL_SMART_HEALTH_VALID (1 << 0)
#define ND_INTEL_SMART_SPARES_VALID (1 << 1)
#define ND_INTEL_SMART_USED_VALID (1 << 2)
#define ND_INTEL_SMART_MTEMP_VALID (1 << 3)
#define ND_INTEL_SMART_CTEMP_VALID (1 << 4)
#define ND_INTEL_SMART_SHUTDOWN_COUNT_VALID (1 << 5)
#define ND_INTEL_SMART_AIT_STATUS_VALID (1 << 6)
#define ND_INTEL_SMART_PTEMP_VALID (1 << 7)
#define ND_INTEL_SMART_ALARM_VALID (1 << 9)
#define ND_INTEL_SMART_SHUTDOWN_VALID (1 << 10)
#define ND_INTEL_SMART_VENDOR_VALID (1 << 11)
#define ND_INTEL_SMART_SPARE_TRIP (1 << 0)
#define ND_INTEL_SMART_TEMP_TRIP (1 << 1)
#define ND_INTEL_SMART_CTEMP_TRIP (1 << 2)
#define ND_INTEL_SMART_NON_CRITICAL_HEALTH (1 << 0)
#define ND_INTEL_SMART_CRITICAL_HEALTH (1 << 1)
#define ND_INTEL_SMART_FATAL_HEALTH (1 << 2)
struct nd_intel_smart {
__u32 status;
union {
struct {
__u32 flags;
__u8 reserved0[4];
__u8 health;
__u8 spares;
__u8 life_used;
__u8 alarm_flags;
__u16 media_temperature;
__u16 ctrl_temperature;
__u32 shutdown_count;
__u8 ait_status;
__u16 pmic_temperature;
__u8 reserved1[8];
__u8 shutdown_state;
__u32 vendor_size;
__u8 vendor_data[92];
} __packed;
__u8 data[128];
};
} __packed;
struct nd_intel_smart_threshold {
__u32 status;
union {
struct {
__u16 alarm_control;
__u8 spares;
__u16 media_temperature;
__u16 ctrl_temperature;
__u8 reserved[1];
} __packed;
__u8 data[8];
};
} __packed;
union acpi_object;
typedef void *acpi_handle;
......
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