* [PATCH v2] mmc: core: Export device lifetime information through sysf [not found] <CGME20161209055329eucas1p1f0718317b23071fe732cb40ed1c65fd3@eucas1p1.samsung.com> @ 2016-12-09 5:53 ` Jungseung Lee 2016-12-13 1:18 ` Shawn Lin 0 siblings, 1 reply; 2+ messages in thread From: Jungseung Lee @ 2016-12-09 5:53 UTC (permalink / raw) To: Ulf Hansson, Adrian Hunter, Shawn Lin, Jaehoon Chung, linux-mmc, linux-kernel, js07.lee Cc: Jungseung Lee In the eMMC 5.0 version of the spec, several EXT_CSD fields about device lifetime are added. - Two types of estimated indications reflected by averaged wear out of memory - An indication reflected by average reserved blocks Export the information through sysfs. Signed-off-by: Jungseung Lee <js07.lee@samsung.com> --- drivers/mmc/core/mmc.c | 12 ++++++++++++ include/linux/mmc/card.h | 3 +++ include/linux/mmc/mmc.h | 3 +++ 3 files changed, 18 insertions(+) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index b61b52f9..c0e2507 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -617,6 +617,12 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) card->ext_csd.ffu_capable = (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); + + card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; + card->ext_csd.device_life_time_est_typ_a = + ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; + card->ext_csd.device_life_time_est_typ_b = + ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; } /* eMMC v5.1 or later */ @@ -764,6 +770,10 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); +MMC_DEV_ATTR(pre_eol_info, "%02x\n", card->ext_csd.pre_eol_info); +MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", + card->ext_csd.device_life_time_est_typ_a, + card->ext_csd.device_life_time_est_typ_b); MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", card->ext_csd.enhanced_area_offset); @@ -817,6 +827,8 @@ static struct attribute *mmc_std_attrs[] = { &dev_attr_name.attr, &dev_attr_oemid.attr, &dev_attr_prv.attr, + &dev_attr_pre_eol_info.attr, + &dev_attr_life_time.attr, &dev_attr_serial.attr, &dev_attr_enhanced_area_offset.attr, &dev_attr_enhanced_area_size.attr, diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 95d69d4..00449e5 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -121,6 +121,9 @@ struct mmc_ext_csd { u8 raw_pwr_cl_ddr_200_360; /* 253 */ u8 raw_bkops_status; /* 246 */ u8 raw_sectors[4]; /* 212 - 4 bytes */ + u8 pre_eol_info; /* 267 */ + u8 device_life_time_est_typ_a; /* 268 */ + u8 device_life_time_est_typ_b; /* 269 */ unsigned int feature_support; #define MMC_DISCARD_FEATURE BIT(0) /* CMD38 feature */ diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 672730a..a074082 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -339,6 +339,9 @@ struct _mmc_csd { #define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */ #define EXT_CSD_PWR_CL_DDR_200_360 253 /* RO */ #define EXT_CSD_FIRMWARE_VERSION 254 /* RO, 8 bytes */ +#define EXT_CSD_PRE_EOL_INFO 267 /* RO */ +#define EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A 268 /* RO */ +#define EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B 269 /* RO */ #define EXT_CSD_CMDQ_DEPTH 307 /* RO */ #define EXT_CSD_CMDQ_SUPPORT 308 /* RO */ #define EXT_CSD_SUPPORTED_MODE 493 /* RO */ -- 2.10.1 ^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] mmc: core: Export device lifetime information through sysf 2016-12-09 5:53 ` [PATCH v2] mmc: core: Export device lifetime information through sysf Jungseung Lee @ 2016-12-13 1:18 ` Shawn Lin 0 siblings, 0 replies; 2+ messages in thread From: Shawn Lin @ 2016-12-13 1:18 UTC (permalink / raw) To: Jungseung Lee, Ulf Hansson, Adrian Hunter, Jaehoon Chung, linux-mmc, linux-kernel, js07.lee Cc: shawn.lin On 2016/12/9 13:53, Jungseung Lee wrote: > In the eMMC 5.0 version of the spec, several EXT_CSD fields about > device lifetime are added. > > - Two types of estimated indications reflected by averaged wear out of memory > - An indication reflected by average reserved blocks > > Export the information through sysfs. > Looks good, Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> > Signed-off-by: Jungseung Lee <js07.lee@samsung.com> > --- > drivers/mmc/core/mmc.c | 12 ++++++++++++ > include/linux/mmc/card.h | 3 +++ > include/linux/mmc/mmc.h | 3 +++ > 3 files changed, 18 insertions(+) > > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c > index b61b52f9..c0e2507 100644 > --- a/drivers/mmc/core/mmc.c > +++ b/drivers/mmc/core/mmc.c > @@ -617,6 +617,12 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) > card->ext_csd.ffu_capable = > (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && > !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); > + > + card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; > + card->ext_csd.device_life_time_est_typ_a = > + ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; > + card->ext_csd.device_life_time_est_typ_b = > + ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; > } > > /* eMMC v5.1 or later */ > @@ -764,6 +770,10 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); > MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); > MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); > MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); > +MMC_DEV_ATTR(pre_eol_info, "%02x\n", card->ext_csd.pre_eol_info); > +MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", > + card->ext_csd.device_life_time_est_typ_a, > + card->ext_csd.device_life_time_est_typ_b); > MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); > MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", > card->ext_csd.enhanced_area_offset); > @@ -817,6 +827,8 @@ static struct attribute *mmc_std_attrs[] = { > &dev_attr_name.attr, > &dev_attr_oemid.attr, > &dev_attr_prv.attr, > + &dev_attr_pre_eol_info.attr, > + &dev_attr_life_time.attr, > &dev_attr_serial.attr, > &dev_attr_enhanced_area_offset.attr, > &dev_attr_enhanced_area_size.attr, > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h > index 95d69d4..00449e5 100644 > --- a/include/linux/mmc/card.h > +++ b/include/linux/mmc/card.h > @@ -121,6 +121,9 @@ struct mmc_ext_csd { > u8 raw_pwr_cl_ddr_200_360; /* 253 */ > u8 raw_bkops_status; /* 246 */ > u8 raw_sectors[4]; /* 212 - 4 bytes */ > + u8 pre_eol_info; /* 267 */ > + u8 device_life_time_est_typ_a; /* 268 */ > + u8 device_life_time_est_typ_b; /* 269 */ > > unsigned int feature_support; > #define MMC_DISCARD_FEATURE BIT(0) /* CMD38 feature */ > diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h > index 672730a..a074082 100644 > --- a/include/linux/mmc/mmc.h > +++ b/include/linux/mmc/mmc.h > @@ -339,6 +339,9 @@ struct _mmc_csd { > #define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */ > #define EXT_CSD_PWR_CL_DDR_200_360 253 /* RO */ > #define EXT_CSD_FIRMWARE_VERSION 254 /* RO, 8 bytes */ > +#define EXT_CSD_PRE_EOL_INFO 267 /* RO */ > +#define EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A 268 /* RO */ > +#define EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B 269 /* RO */ > #define EXT_CSD_CMDQ_DEPTH 307 /* RO */ > #define EXT_CSD_CMDQ_SUPPORT 308 /* RO */ > #define EXT_CSD_SUPPORTED_MODE 493 /* RO */ > -- Best Regards Shawn Lin ^ permalink raw reply [flat|nested] 2+ messages in thread
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2016-12-09 5:53 ` [PATCH v2] mmc: core: Export device lifetime information through sysf Jungseung Lee
2016-12-13 1:18 ` Shawn Lin
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