Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753774AbdL1Naq (ORCPT ); Thu, 28 Dec 2017 08:30:46 -0500 Received: from esa5.hgst.iphmx.com ([216.71.153.144]:19603 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753516AbdL1N3h (ORCPT ); Thu, 28 Dec 2017 08:29:37 -0500 X-IronPort-AV: E=Sophos;i="5.45,471,1508774400"; d="scan'208";a="66938085" From: Stanislav Nijnikov To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org Cc: alex.lemberg@wdc.com, Stanislav Nijnikov Subject: [PATCH v3 5/9] ufs: sysfs: power descriptor Date: Thu, 28 Dec 2017 15:29:10 +0200 Message-Id: <1514467754-24499-6-git-send-email-stanislav.nijnikov@wdc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514467754-24499-1-git-send-email-stanislav.nijnikov@wdc.com> References: <1514467754-24499-1-git-send-email-stanislav.nijnikov@wdc.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8511 Lines: 172 This patch introduces a sysfs group entry for the UFS power descriptor parameters. The group adds "power_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 Reviewed-by: Greg Kroah-Hartman Signed-off-by: Stanislav Nijnikov --- Documentation/ABI/testing/sysfs-driver-ufs | 10 +++ drivers/scsi/ufs/ufs-sysfs.c | 121 +++++++++++++++++++++++++++++ 2 files changed, 131 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs index 6ba0f4d..48cd49c 100644 --- a/Documentation/ABI/testing/sysfs-driver-ufs +++ b/Documentation/ABI/testing/sysfs-driver-ufs @@ -441,3 +441,13 @@ Description: This file shows indication of the device life time 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/*/power_descriptor/active_icc_levels_vcc* +Date: December 2017 +Contact: Stanislav Nijnikov +Description: This file shows maximum VCC, VCCQ and VCCQ2 value for + active ICC levels from 0 to 15. This is one of the UFS + power 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 ce6d27e..0db4bed 100644 --- a/drivers/scsi/ufs/ufs-sysfs.c +++ b/drivers/scsi/ufs/ufs-sysfs.c @@ -267,11 +267,132 @@ static const struct attribute_group ufs_sysfs_health_descriptor_group = { .attrs = ufs_sysfs_health_descriptor, }; +#define ufs_sysfs_power_desc_param_show(_name, _puname, _index) \ +static ssize_t _name##_index##_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_POWER, 0, buf, \ + PWR_DESC_##_puname##_0 + _index * UFS_PARAM_WORD_SIZE, \ + UFS_PARAM_WORD_SIZE); \ +} + +#define UFS_POWER_DESC_PARAM(_pname, _puname, _index) \ + ufs_sysfs_power_desc_param_show(_pname, _puname, _index) \ + static DEVICE_ATTR_RO(_pname##_index) + +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 0); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 1); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 2); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 3); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 4); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 5); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 6); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 7); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 8); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 9); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 10); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 11); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 12); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 13); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 14); +UFS_POWER_DESC_PARAM(active_icc_levels_vcc, ACTIVE_LVLS_VCC, 15); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 0); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 1); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 2); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 3); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 4); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 5); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 6); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 7); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 8); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 9); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 10); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 11); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 12); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 13); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 14); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq, ACTIVE_LVLS_VCCQ, 15); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 0); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 1); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 2); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 3); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 4); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 5); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 6); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 7); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 8); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 9); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 10); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 11); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 12); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 13); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 14); +UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, ACTIVE_LVLS_VCCQ2, 15); + +static struct attribute *ufs_sysfs_power_descriptor[] = { + &dev_attr_active_icc_levels_vcc0.attr, + &dev_attr_active_icc_levels_vcc1.attr, + &dev_attr_active_icc_levels_vcc2.attr, + &dev_attr_active_icc_levels_vcc3.attr, + &dev_attr_active_icc_levels_vcc4.attr, + &dev_attr_active_icc_levels_vcc5.attr, + &dev_attr_active_icc_levels_vcc6.attr, + &dev_attr_active_icc_levels_vcc7.attr, + &dev_attr_active_icc_levels_vcc8.attr, + &dev_attr_active_icc_levels_vcc9.attr, + &dev_attr_active_icc_levels_vcc10.attr, + &dev_attr_active_icc_levels_vcc11.attr, + &dev_attr_active_icc_levels_vcc12.attr, + &dev_attr_active_icc_levels_vcc13.attr, + &dev_attr_active_icc_levels_vcc14.attr, + &dev_attr_active_icc_levels_vcc15.attr, + &dev_attr_active_icc_levels_vccq0.attr, + &dev_attr_active_icc_levels_vccq1.attr, + &dev_attr_active_icc_levels_vccq2.attr, + &dev_attr_active_icc_levels_vccq3.attr, + &dev_attr_active_icc_levels_vccq4.attr, + &dev_attr_active_icc_levels_vccq5.attr, + &dev_attr_active_icc_levels_vccq6.attr, + &dev_attr_active_icc_levels_vccq7.attr, + &dev_attr_active_icc_levels_vccq8.attr, + &dev_attr_active_icc_levels_vccq9.attr, + &dev_attr_active_icc_levels_vccq10.attr, + &dev_attr_active_icc_levels_vccq11.attr, + &dev_attr_active_icc_levels_vccq12.attr, + &dev_attr_active_icc_levels_vccq13.attr, + &dev_attr_active_icc_levels_vccq14.attr, + &dev_attr_active_icc_levels_vccq15.attr, + &dev_attr_active_icc_levels_vccq20.attr, + &dev_attr_active_icc_levels_vccq21.attr, + &dev_attr_active_icc_levels_vccq22.attr, + &dev_attr_active_icc_levels_vccq23.attr, + &dev_attr_active_icc_levels_vccq24.attr, + &dev_attr_active_icc_levels_vccq25.attr, + &dev_attr_active_icc_levels_vccq26.attr, + &dev_attr_active_icc_levels_vccq27.attr, + &dev_attr_active_icc_levels_vccq28.attr, + &dev_attr_active_icc_levels_vccq29.attr, + &dev_attr_active_icc_levels_vccq210.attr, + &dev_attr_active_icc_levels_vccq211.attr, + &dev_attr_active_icc_levels_vccq212.attr, + &dev_attr_active_icc_levels_vccq213.attr, + &dev_attr_active_icc_levels_vccq214.attr, + &dev_attr_active_icc_levels_vccq215.attr, + NULL, +}; + +static const struct attribute_group ufs_sysfs_power_descriptor_group = { + .name = "power_descriptor", + .attrs = ufs_sysfs_power_descriptor, +}; + static const struct attribute_group *ufs_sysfs_groups[] = { &ufs_sysfs_device_descriptor_group, &ufs_sysfs_interconnect_descriptor_group, &ufs_sysfs_geometry_descriptor_group, &ufs_sysfs_health_descriptor_group, + &ufs_sysfs_power_descriptor_group, NULL, }; -- 2.7.4