From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753192AbcL2TCr (ORCPT ); Thu, 29 Dec 2016 14:02:47 -0500 Received: from mail-wm0-f53.google.com ([74.125.82.53]:38871 "EHLO mail-wm0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752982AbcL2TCp (ORCPT ); Thu, 29 Dec 2016 14:02:45 -0500 MIME-Version: 1.0 In-Reply-To: <20161222033734.7052-1-js07.lee@samsung.com> References: <20161222033734.7052-1-js07.lee@samsung.com> From: Ulf Hansson Date: Thu, 29 Dec 2016 20:02:43 +0100 Message-ID: Subject: Re: [PATCH v3] mmc: core: Export device lifetime information through sysfs To: Jungseung Lee Cc: Adrian Hunter , Shawn Lin , "linux-mmc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , yj84.jang@samsung.com Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22 December 2016 at 04:37, 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. > > Signed-off-by: Jungseung Lee > Reviewed-by: Jaehoon Chung > Reviewed-by: Shawn Lin Thanks, applied for next! Kind regards Uffe > --- > 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 >