diff mbox

mmc: core: Export device lifetime information through sysfs

Message ID 20161208104028.11816-1-js07.lee@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jungseung Lee Dec. 8, 2016, 10:40 a.m. UTC 
In the eMMC 5.0 version of the spec, several EXT_CSD fields
about device lifetime are added.

 Two type 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(+)

Comments

Jaehoon Chung Dec. 9, 2016, 12:23 a.m. UTC | #1 
Hi,

On 12/08/2016 07:40 PM, Jungseung Lee wrote:
> In the eMMC 5.0 version of the spec, several EXT_CSD fields
> about device lifetime are added.
> 
>  Two type of estimated indications reflected by averaged wear out of memory
>  An indication reflected by average reserved blocks
> 
> Export the information through sysfs.

When tried to apply your patch, conflicted with latest mmc tree.
I think you needs to resend the patch V2 with latest Ulf's mmc tree.
Except this, this patch looks good to me.

Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>

Best Regards,
Jaehoon Chung

> 
> 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 df19777..37589eb 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];
>  	}
>  out:
>  	return err;
> @@ -746,6 +752,10 @@ 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);
> @@ -799,6 +809,8 @@ 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 73fad83..510a73a 100644
> --- a/include/linux/mmc/card.h
> +++ b/include/linux/mmc/card.h
> @@ -119,6 +119,9 @@ 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 c376209..a034d07 100644
> --- a/include/linux/mmc/mmc.h
> +++ b/include/linux/mmc/mmc.h
> @@ -331,6 +331,9 @@ 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_SUPPORTED_MODE		493	/* RO */
>  #define EXT_CSD_TAG_UNIT_SIZE		498	/* RO */
>  #define EXT_CSD_DATA_TAG_SUPPORT	499	/* RO */
> 

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diff mbox

Patch

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index df19777..37589eb 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];
 	}
 out:
 	return err;
@@ -746,6 +752,10 @@  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);
@@ -799,6 +809,8 @@  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 73fad83..510a73a 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -119,6 +119,9 @@  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 c376209..a034d07 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -331,6 +331,9 @@  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_SUPPORTED_MODE		493	/* RO */
 #define EXT_CSD_TAG_UNIT_SIZE		498	/* RO */
 #define EXT_CSD_DATA_TAG_SUPPORT	499	/* RO */