From: Lijun Pan <[email protected]> This patch retrieves the health data from NVDIMM-N via the MSFT _DSM function[1], following JESD245A[2] standards. Now 'ndctl list --dimms --health --idle' could work on MSFT type NVDIMM-N, but limited to health_state, temperature_celsius, and life_used_percentage.
[1]. https://msdn.microsoft.com/library/windows/hardware/mt604741 [2]. https://www.jedec.org/sites/default/files/docs/JESD245A.pdf Cc: Stuart Hayes <[email protected]> Signed-off-by: Lijun Pan <[email protected]> --- v2: - v2 combines v1's 1/2 and 2/2 - reuse the existing libndctl abstraction (suggested by Dan) - move the MSFT _DSM code under ndctl/lib/ - the closet common field we can have between MSFT _DSM and smart is health_state, temperature_celsius, and life_used_percentage. ndctl/lib/Makefile.am | 1 + ndctl/lib/libndctl-msft.c | 143 +++++++++++++++++++++++++++++++++++++++++++ ndctl/lib/libndctl-private.h | 4 ++ ndctl/lib/libndctl.c | 2 + ndctl/lib/ndctl-msft.h | 63 +++++++++++++++++++ 5 files changed, 213 insertions(+) create mode 100644 ndctl/lib/libndctl-msft.c create mode 100644 ndctl/lib/ndctl-msft.h diff --git a/ndctl/lib/Makefile.am b/ndctl/lib/Makefile.am index 58a0bb3..7a446be 100644 --- a/ndctl/lib/Makefile.am +++ b/ndctl/lib/Makefile.am @@ -32,6 +32,7 @@ endif if ENABLE_SMART libndctl_la_SOURCES += libndctl-smart.c libndctl_la_SOURCES += libndctl-hpe1.c +libndctl_la_SOURCES += libndctl-msft.c endif EXTRA_DIST += libndctl.sym diff --git a/ndctl/lib/libndctl-msft.c b/ndctl/lib/libndctl-msft.c new file mode 100644 index 0000000..868e5c0 --- /dev/null +++ b/ndctl/lib/libndctl-msft.c @@ -0,0 +1,143 @@ +/* + * Copyright (C) 2016-2017 Dell, Inc. + * Copyright (C) 2016 Hewlett Packard Enterprise Development LP + * Copyright (c) 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, + * version 2.1, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for + * more details. + */ +#include <stdlib.h> +#include <limits.h> +#include <util/log.h> +#include <ndctl/libndctl.h> +#include "libndctl-private.h" +#include "ndctl-msft.h" + +#define CMD_MSFT(_c) ((_c)->msft) +#define CMD_MSFT_SMART(_c) (CMD_MSFT(_c)->u.smart.data) + +static struct ndctl_cmd *msft_dimm_cmd_new_smart(struct ndctl_dimm *dimm) +{ + struct ndctl_bus *bus = ndctl_dimm_get_bus(dimm); + struct ndctl_ctx *ctx = ndctl_bus_get_ctx(bus); + struct ndctl_cmd *cmd; + size_t size; + struct ndn_pkg_msft *msft; + + if (!ndctl_dimm_is_cmd_supported(dimm, ND_CMD_CALL)) { + dbg(ctx, "unsupported cmd\n"); + return NULL; + } + + size = sizeof(*cmd) + sizeof(struct ndn_pkg_msft); + cmd = calloc(1, size); + if (!cmd) + return NULL; + + cmd->dimm = dimm; + ndctl_cmd_ref(cmd); + cmd->type = ND_CMD_CALL; + cmd->size = size; + cmd->status = 1; + + msft = CMD_MSFT(cmd); + msft->gen.nd_family = NVDIMM_FAMILY_MSFT; + msft->gen.nd_command = NDN_MSFT_CMD_SMART; + msft->gen.nd_fw_size = 0; + msft->gen.nd_size_in = offsetof(struct ndn_msft_smart, status); + msft->gen.nd_size_out = sizeof(msft->u.smart); + msft->u.smart.status = 0; + + cmd->firmware_status = &msft->u.smart.status; + + return cmd; +} + +static int msft_smart_valid(struct ndctl_cmd *cmd) +{ + if (cmd->type != ND_CMD_CALL || + cmd->size != sizeof(*cmd) + sizeof(struct ndn_pkg_msft) || + CMD_MSFT(cmd)->gen.nd_family != NVDIMM_FAMILY_MSFT || + CMD_MSFT(cmd)->gen.nd_command != NDN_MSFT_CMD_SMART || + cmd->status != 0) + return cmd->status < 0 ? cmd->status : -EINVAL; + return 0; +} + +static unsigned int msft_cmd_smart_get_flags(struct ndctl_cmd *cmd) +{ + if (msft_smart_valid(cmd) < 0) + return UINT_MAX; + + /* below health data can be retrieved via MSFT _DSM function 11 */ + return NDN_MSFT_SMART_HEALTH_VALID | + NDN_MSFT_SMART_TEMP_VALID | + NDN_MSFT_SMART_USED_VALID; +} + +static unsigned int num_set_bit_health(__u16 num) +{ + int i; + __u16 n = num & 0x7FFF; + unsigned int count = 0; + + for (i = 0; i < 15; i++) + if (!!(n & (1 << i))) + count++; + + return count; +} + +static unsigned int msft_cmd_smart_get_health(struct ndctl_cmd *cmd) +{ + unsigned int health; + unsigned int num; + + if (msft_smart_valid(cmd) < 0) + return UINT_MAX; + + num = num_set_bit_health(CMD_MSFT_SMART(cmd)->health); + if (num == 0) + health = 0; + else if (num < 2) + health = ND_SMART_NON_CRITICAL_HEALTH; + else if (num < 3) + health = ND_SMART_CRITICAL_HEALTH; + else + health = ND_SMART_FATAL_HEALTH; + + return health; +} + +static unsigned int msft_cmd_smart_get_temperature(struct ndctl_cmd *cmd) +{ + if (msft_smart_valid(cmd) < 0) + return UINT_MAX; + /* + * refer to JESD245 spec section 7.8 to calculate the temperature + * then convert to 1/16 Celsius granularity. + */ + return CMD_MSFT_SMART(cmd)->temp & 0x0FFC; +} + +static unsigned int msft_cmd_smart_get_life_used(struct ndctl_cmd *cmd) +{ + if (msft_smart_valid(cmd) < 0) + return UINT_MAX; + + return 100 - CMD_MSFT_SMART(cmd)->nvm_lifetime; +} + +struct ndctl_smart_ops * const msft_smart_ops = &(struct ndctl_smart_ops) { + .new_smart = msft_dimm_cmd_new_smart, + .smart_get_flags = msft_cmd_smart_get_flags, + .smart_get_health = msft_cmd_smart_get_health, + .smart_get_temperature = msft_cmd_smart_get_temperature, + .smart_get_life_used = msft_cmd_smart_get_life_used, +}; diff --git a/ndctl/lib/libndctl-private.h b/ndctl/lib/libndctl-private.h index 3e67db0..8f10fbc 100644 --- a/ndctl/lib/libndctl-private.h +++ b/ndctl/lib/libndctl-private.h @@ -32,6 +32,7 @@ #include <ccan/endian/endian.h> #include <ccan/short_types/short_types.h> #include "ndctl-hpe1.h" +#include "ndctl-msft.h" #define SZ_16M 0x01000000 @@ -196,6 +197,7 @@ struct ndctl_cmd { struct nd_cmd_clear_error clear_err[0]; #endif struct ndn_pkg_hpe1 hpe1[0]; + struct ndn_pkg_msft msft[0]; struct nd_cmd_smart smart[0]; struct nd_cmd_smart_threshold smart_t[0]; struct nd_cmd_get_config_size get_size[0]; @@ -226,9 +228,11 @@ struct ndctl_smart_ops { #if HAS_SMART == 1 struct ndctl_smart_ops * const intel_smart_ops; struct ndctl_smart_ops * const hpe1_smart_ops; +struct ndctl_smart_ops * const msft_smart_ops; #else static struct ndctl_smart_ops * const intel_smart_ops = NULL; static struct ndctl_smart_ops * const hpe1_smart_ops = NULL; +static struct ndctl_smart_ops * const msft_smart_ops = NULL; #endif /* internal library helpers for conditionally defined command numbers */ diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c index 565c969..e5e027a 100644 --- a/ndctl/lib/libndctl.c +++ b/ndctl/lib/libndctl.c @@ -1254,6 +1254,8 @@ static void *add_dimm(void *parent, int id, const char *dimm_base) dimm->dsm_family = strtoul(buf, NULL, 0); if (dimm->dsm_family == NVDIMM_FAMILY_HPE1) dimm->smart_ops = hpe1_smart_ops; + if (dimm->dsm_family == NVDIMM_FAMILY_MSFT) + dimm->smart_ops = msft_smart_ops; dimm->formats = formats; sprintf(path, "%s/nfit/format", dimm_base); diff --git a/ndctl/lib/ndctl-msft.h b/ndctl/lib/ndctl-msft.h new file mode 100644 index 0000000..0a1c7c6 --- /dev/null +++ b/ndctl/lib/ndctl-msft.h @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2016-2017 Dell, Inc. + * Copyright (C) 2016 Hewlett Packard Enterprise Development LP + * Copyright (c) 2014-2015, 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, + * version 2.1, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for + * more details. + */ +#ifndef __NDCTL_MSFT_H__ +#define __NDCTL_MSFT_H__ + +enum { + NDN_MSFT_CMD_QUERY = 0, + + /* non-root commands */ + NDN_MSFT_CMD_SMART = 11, +}; + +/* NDN_MSFT_CMD_SMART */ +#define NDN_MSFT_SMART_HEALTH_VALID ND_SMART_HEALTH_VALID +#define NDN_MSFT_SMART_TEMP_VALID ND_SMART_TEMP_VALID +#define NDN_MSFT_SMART_USED_VALID ND_SMART_USED_VALID + +/* + * This is actually function 11 data, + * This is the closest I can find to match smart + * Microsoft _DSM does not have smart function + */ +struct ndn_msft_smart_data { + __u16 health; + __u16 temp; + __u8 err_thresh_stat; + __u8 warn_thresh_stat; + __u8 nvm_lifetime; + __u8 count_dram_uncorr_err; + __u8 count_dram_corr_err; +} __attribute__((packed)); + +struct ndn_msft_smart { + __u32 status; + union { + __u8 buf[9]; + struct ndn_msft_smart_data data[0]; + }; +} __attribute__((packed)); + +union ndn_msft_cmd { + __u32 query; + struct ndn_msft_smart smart; +} __attribute__((packed)); + +struct ndn_pkg_msft { + struct nd_cmd_pkg gen; + union ndn_msft_cmd u; +} __attribute__((packed)); + +#endif /* __NDCTL_MSFT_H__ */ -- 1.8.3.1 _______________________________________________ Linux-nvdimm mailing list [email protected] https://lists.01.org/mailman/listinfo/linux-nvdimm
