From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x226tGYH0LvMc9klOqRRwYt3UEUKV98IX1eGMpHe3Cg5ptZ411Do+2DXJCeLU55HK6cKWk7kj ARC-Seal: i=1; a=rsa-sha256; t=1517933195; cv=none; d=google.com; s=arc-20160816; b=kkXGvrGMnzGOf7SAtxEnVLZmN8gTrkc6c7dWTFzWetG74xcK05irhZ5rVEscmAkv1Z M31M/bFuNA9VrdlngxtEcE52LrMsudVvpBW3lVLl5bZfe5tHM+b1Ld/9KXY/7q+Ijnb5 RRbtPeKQKltgkNVQHfOEiBbv6PY6c2OhGIyGLFEiArIf+w8f+0PFFpkXiFwE1K6ssDAV NCrEjMVq1NTE8mlokBJUCFh9D5LneW8nB6YPs63oI18w3UCVHK18Q9ttdmRNeARYrYVl ssHSRNrekYV2eaDesEkEFLUuqdnYJMsSpKQMfWRdn5v9KYp3RWnN77IkLCehhVu7EvNj 2ijw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:arc-authentication-results; bh=cCXpgXtC747Lqp2WwUml03zeTB+7vDmD2yefzAp4xUk=; b=T0VYB6kDboB5LYJlnSZoP6QuRCA21jtd/1cWG+QbmJGUGaMQmxf98xN4EevxX6+zUk Or5da9hhIH6aIV+aaiZDACD6FdSv3W8QCQzI/PqTPrISrA+hbprYqUiK1XyCBqsNCTWI DS+Ir+SSFDtrf1KVleuJBwwMWtcDtePiPVnuhlAI1WnHTSMNRNkKULpH7ejRUYTLyeu7 MDeJGEouWnj0aP9hymVBZt0rsHrX4Bpg9LGCDZ6a5zJ+u8nD5/LHNhVYD3fjbn3gXPHB 6XGUpS91gxF2N8H9SDe74APbnHYL7r+XPk5Zl0/3pJLW4PfBTSKMtJZOvMoasB0CM7UL P6+w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@wdc.com header.s=dkim.wdc.com header.b=lzeU3+qV; spf=pass (google.com: domain of prvs=568516f6c=stanislav.nijnikov@wdc.com designates 68.232.143.124 as permitted sender) smtp.mailfrom=prvs=568516f6c=stanislav.nijnikov@wdc.com Authentication-Results: mx.google.com; dkim=pass header.i=@wdc.com header.s=dkim.wdc.com header.b=lzeU3+qV; spf=pass (google.com: domain of prvs=568516f6c=stanislav.nijnikov@wdc.com designates 68.232.143.124 as permitted sender) smtp.mailfrom=prvs=568516f6c=stanislav.nijnikov@wdc.com X-IronPort-AV: E=Sophos;i="5.46,469,1511798400"; d="scan'208";a="167144206" From: Stanislav Nijnikov To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, jaegeuk@kernel.org Cc: alex.lemberg@wdc.com, Stanislav Nijnikov Subject: [PATCH v5 02/11] scsi: ufs: sysfs: device descriptor Date: Tue, 6 Feb 2018 18:06:14 +0200 Message-Id: <1517933183-30892-3-git-send-email-stanislav.nijnikov@wdc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1517933183-30892-1-git-send-email-stanislav.nijnikov@wdc.com> References: <1517933183-30892-1-git-send-email-stanislav.nijnikov@wdc.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1591668318034296035?= X-GMAIL-MSGID: =?utf-8?q?1591668318034296035?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: This patch introduces a sysfs group entry for the UFS device descriptor parameters. The group adds "device_descriptor" folder under the UFS driver sysfs entry (/sys/bus/platform/drivers/ufshcd/*). The parameters are shown as hexadecimal numbers. The full information about the parameters could be found at UFS specifications 2.1. Signed-off-by: Stanislav Nijnikov --- Documentation/ABI/testing/sysfs-driver-ufs | 223 +++++++++++++++++++++++++++++ drivers/scsi/ufs/ufs-sysfs.c | 116 +++++++++++++++ drivers/scsi/ufs/ufs.h | 8 ++ drivers/scsi/ufs/ufshcd.c | 12 +- drivers/scsi/ufs/ufshcd.h | 6 + 5 files changed, 359 insertions(+), 6 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-driver-ufs diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs new file mode 100644 index 0000000..8da7b84 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-ufs @@ -0,0 +1,223 @@ +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_type +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the device type. This is one of the UFS + device descriptor parameters. The full information about + the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_class +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the device class. This is one of the UFS + device descriptor parameters. The full information about + the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_sub_class +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the UFS storage subclass. This is one of + the UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/protocol +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the protocol supported by an UFS device. + This is one of the UFS device descriptor parameters. + The full information about the descriptor could be found + at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_luns +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows number of logical units. This is one of + the UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_wluns +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows number of well known logical units. + This is one of the UFS device descriptor parameters. + The full information about the descriptor could be found + at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/boot_enable +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows value that indicates whether the device is + enabled for boot. This is one of the UFS device descriptor + parameters. The full information about the descriptor could + be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/descriptor_access_enable +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows value that indicates whether the device + descriptor could be read after partial initialization phase + of the boot sequence. This is one of the UFS device descriptor + parameters. The full information about the descriptor could + be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_power_mode +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows value that defines the power mode after + device initialization or hardware reset. This is one of + the UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/high_priority_lun +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the high priority lun. This is one of + the UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/secure_removal_type +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the secure removal type. This is one of + the UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/support_security_lun +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows whether the security lun is supported. + This is one of the UFS device descriptor parameters. + The full information about the descriptor could be found + at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/bkops_termination_latency +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the background operations termination + latency. This is one of the UFS device descriptor parameters. + The full information about the descriptor could be found + at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_active_icc_level +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the initial active ICC level. This is one + of the UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/specification_version +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the specification version. This is one + of the UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturing_date +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the manufacturing date in BCD format. + This is one of the UFS device descriptor parameters. + The full information about the descriptor could be found + at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturer_id +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the manufacturee ID. This is one of the + UFS device descriptor parameters. The full information about + the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtt_capability +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the maximum number of outstanding RTTs + supported by the device. This is one of the UFS device + descriptor parameters. The full information about + the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtc_update +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the frequency and method of the realtime + clock update. This is one of the UFS device descriptor + parameters. The full information about the descriptor + could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ufs_features +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows which features are supported by the device. + This is one of the UFS device descriptor parameters. + The full information about the descriptor could be + found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ffu_timeout +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the FFU timeout. This is one of the + UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/queue_depth +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the device queue depth. This is one of the + UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_version +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the device version. This is one of the + UFS device descriptor parameters. The full information + about the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_secure_wpa +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows number of secure write protect areas + supported by the device. This is one of the UFS device + descriptor parameters. The full information about + the descriptor could be found at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_max_data_size +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the maximum amount of data that may be + written during the pre-soldering phase of the PSA flow. + This is one of the UFS device descriptor parameters. + The full information about the descriptor could be found + at UFS specifications 2.1. + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_state_timeout +Date: February 2018 +Contact: Stanislav Nijnikov +Description: This file shows the command maximum timeout for a change + in PSA state. This is one of the UFS device descriptor + parameters. The full information about the descriptor could + be found at UFS specifications 2.1. + The file is read only. diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c index ce8dcb6..aa2779a 100644 --- a/drivers/scsi/ufs/ufs-sysfs.c +++ b/drivers/scsi/ufs/ufs-sysfs.c @@ -3,7 +3,9 @@ #include #include +#include +#include "ufs.h" #include "ufs-sysfs.h" static const char *ufschd_uic_link_state_to_string( @@ -134,8 +136,122 @@ static const struct attribute_group ufs_sysfs_default_group = { .attrs = ufs_sysfs_ufshcd_attrs, }; +static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba, + enum desc_idn desc_id, + u8 desc_index, + u8 param_offset, + u8 *sysfs_buf, + u8 param_size) +{ + u8 desc_buf[8] = {0}; + int ret; + + if (param_size > 8) + return -EINVAL; + + ret = ufshcd_read_desc_param(hba, desc_id, desc_index, + param_offset, desc_buf, param_size); + if (ret) + return -EINVAL; + switch (param_size) { + case 1: + ret = sprintf(sysfs_buf, "0x%02X\n", *desc_buf); + break; + case 2: + ret = sprintf(sysfs_buf, "0x%04X\n", + get_unaligned_be16(desc_buf)); + break; + case 4: + ret = sprintf(sysfs_buf, "0x%08X\n", + get_unaligned_be32(desc_buf)); + break; + case 8: + ret = sprintf(sysfs_buf, "0x%016llX\n", + get_unaligned_be64(desc_buf)); + break; + } + + return ret; +} + +#define UFS_DESC_PARAM(_name, _puname, _duname, _size) \ +static ssize_t _name##_show(struct device *dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + struct ufs_hba *hba = dev_get_drvdata(dev); \ + return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ + 0, _duname##_DESC_PARAM##_puname, buf, _size); \ +} \ +static DEVICE_ATTR_RO(_name) + +#define UFS_DEVICE_DESC_PARAM(_name, _uname, _size) \ + UFS_DESC_PARAM(_name, _uname, DEVICE, _size) + +UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1); +UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1); +UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1); +UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1); +UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1); +UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1); +UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1); +UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1); +UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1); +UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1); +UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1); +UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1); +UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1); +UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1); +UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2); +UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2); +UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2); +UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1); +UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2); +UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1); +UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1); +UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1); +UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2); +UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1); +UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4); +UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1); + +static struct attribute *ufs_sysfs_device_descriptor[] = { + &dev_attr_device_type.attr, + &dev_attr_device_class.attr, + &dev_attr_device_sub_class.attr, + &dev_attr_protocol.attr, + &dev_attr_number_of_luns.attr, + &dev_attr_number_of_wluns.attr, + &dev_attr_boot_enable.attr, + &dev_attr_descriptor_access_enable.attr, + &dev_attr_initial_power_mode.attr, + &dev_attr_high_priority_lun.attr, + &dev_attr_secure_removal_type.attr, + &dev_attr_support_security_lun.attr, + &dev_attr_bkops_termination_latency.attr, + &dev_attr_initial_active_icc_level.attr, + &dev_attr_specification_version.attr, + &dev_attr_manufacturing_date.attr, + &dev_attr_manufacturer_id.attr, + &dev_attr_rtt_capability.attr, + &dev_attr_rtc_update.attr, + &dev_attr_ufs_features.attr, + &dev_attr_ffu_timeout.attr, + &dev_attr_queue_depth.attr, + &dev_attr_device_version.attr, + &dev_attr_number_of_secure_wpa.attr, + &dev_attr_psa_max_data_size.attr, + &dev_attr_psa_state_timeout.attr, + NULL, +}; + +static const struct attribute_group ufs_sysfs_device_descriptor_group = { + .name = "device_descriptor", + .attrs = ufs_sysfs_device_descriptor, +}; + static const struct attribute_group *ufs_sysfs_groups[] = { &ufs_sysfs_default_group, + &ufs_sysfs_device_descriptor_group, NULL, }; diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 54deeb7..6ae1e08 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -220,6 +220,14 @@ enum device_desc_param { DEVICE_DESC_PARAM_UD_LEN = 0x1B, DEVICE_DESC_PARAM_RTT_CAP = 0x1C, DEVICE_DESC_PARAM_FRQ_RTC = 0x1D, + DEVICE_DESC_PARAM_UFS_FEAT = 0x1F, + DEVICE_DESC_PARAM_FFU_TMT = 0x20, + DEVICE_DESC_PARAM_Q_DPTH = 0x21, + DEVICE_DESC_PARAM_DEV_VER = 0x22, + DEVICE_DESC_PARAM_NUM_SEC_WPA = 0x24, + DEVICE_DESC_PARAM_PSA_MAX_DATA = 0x25, + DEVICE_DESC_PARAM_PSA_TMT = 0x29, + DEVICE_DESC_PARAM_PRDCT_REV = 0x2A, }; /* diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index e7621a0a..540a431 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -2989,12 +2989,12 @@ EXPORT_SYMBOL(ufshcd_map_desc_id_to_length); * * Return 0 in case of success, non-zero otherwise */ -static int ufshcd_read_desc_param(struct ufs_hba *hba, - enum desc_idn desc_id, - int desc_index, - u8 param_offset, - u8 *param_read_buf, - u8 param_size) +int ufshcd_read_desc_param(struct ufs_hba *hba, + enum desc_idn desc_id, + int desc_index, + u8 param_offset, + u8 *param_read_buf, + u8 param_size) { int ret; u8 *desc_buf; diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 53e2779..38c307d 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -841,6 +841,12 @@ static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info) } /* Expose Query-Request API */ +int ufshcd_read_desc_param(struct ufs_hba *hba, + enum desc_idn desc_id, + int desc_index, + u8 param_offset, + u8 *param_read_buf, + u8 param_size); int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode, enum flag_idn idn, bool *flag_res); int ufshcd_hold(struct ufs_hba *hba, bool async); -- 2.7.4