* [PATCH] mmc: core: Export device lifetime information through sysfs
[not found] <CGME20161208104055eucas1p1dfc3b9f17f136aa8d099875938722707@eucas1p1.samsung.com>
@ 2016-12-08 10:40 ` Jungseung Lee
2016-12-09 0:23 ` Jaehoon Chung
0 siblings, 1 reply; 2+ messages in thread
From: Jungseung Lee @ 2016-12-08 10:40 UTC (permalink / raw)
To: Ulf Hansson, Adrian Hunter, Shawn Lin, linux-mmc, js07.lee; +Cc: Jungseung Lee
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(+)
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 */
--
2.10.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] mmc: core: Export device lifetime information through sysfs
2016-12-08 10:40 ` [PATCH] mmc: core: Export device lifetime information through sysfs Jungseung Lee
@ 2016-12-09 0:23 ` Jaehoon Chung
0 siblings, 0 replies; 2+ messages in thread
From: Jaehoon Chung @ 2016-12-09 0:23 UTC (permalink / raw)
To: Jungseung Lee, Ulf Hansson, Adrian Hunter, Shawn Lin, linux-mmc,
js07.lee
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 */
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <CGME20161208104055eucas1p1dfc3b9f17f136aa8d099875938722707@eucas1p1.samsung.com>
2016-12-08 10:40 ` [PATCH] mmc: core: Export device lifetime information through sysfs Jungseung Lee
2016-12-09 0:23 ` Jaehoon Chung
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