From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2275AC00140 for ; Wed, 10 Aug 2022 12:33:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231524AbiHJMdU (ORCPT ); Wed, 10 Aug 2022 08:33:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230514AbiHJMdS (ORCPT ); Wed, 10 Aug 2022 08:33:18 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27CCF7695E for ; Wed, 10 Aug 2022 05:33:18 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7DB4761351 for ; Wed, 10 Aug 2022 12:33:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 10AE4C433C1; Wed, 10 Aug 2022 12:33:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660134796; bh=qHEafz/4L4clx0/D8+u1J80ED+oGx2biQ1HzFcvOY7c=; h=From:To:Cc:Subject:Date:From; b=HIGmfjHONYeIQ/REnkNqDODzQz3rSLYtEbeIkfRJQP1Ca1nMKAgDhbU1D5wd5E0Qn 6+Rh5tA+AQWGc1NOxrLxl/3RCytQnPCWbJuIwxd67ZCbJYNYlZHLyBFuOmu9DeaM/8 ZR9R3jUvBfFqqsfqbQmk7hzqkw8uzQRyW2xpsCVIQU37f7I69HrE1rOxiUX+g8g2L1 5IXqvNHAh5e0s8YO+bh7ZnZRe99WoxgEjbcMJCHnInxNmsLIwXTiVBFtrrYmfWRdmW GUAvcavVoDxdXJnbkfiIGoTRXbWN+yLdcsLd/3v2uWcbyEqfU5FWu9IITITKm04ivJ YmmGXP/WwDTOA== From: Oded Gabbay To: linux-kernel@vger.kernel.org Cc: Ofir Bitton Subject: [PATCH 1/3] habanalabs: expose device security status through sysfs Date: Wed, 10 Aug 2022 15:33:10 +0300 Message-Id: <20220810123312.1683716-1-ogabbay@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ofir Bitton In order for the user to know if he is running on a secured device or not, a sysfs node is added. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay --- Documentation/ABI/testing/sysfs-driver-habanalabs | 6 ++++++ drivers/misc/habanalabs/common/sysfs.c | 10 ++++++++++ 2 files changed, 16 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-driver-habanalabs b/Documentation/ABI/testing/sysfs-driver-habanalabs index 96646fb2e7a1..6963640a2615 100644 --- a/Documentation/ABI/testing/sysfs-driver-habanalabs +++ b/Documentation/ABI/testing/sysfs-driver-habanalabs @@ -176,6 +176,12 @@ KernelVersion: 5.1 Contact: ogabbay@kernel.org Description: Version of the device's preboot F/W code +What: /sys/class/habanalabs/hl/security_enabled +Date: Oct 2022 +KernelVersion: 6.1 +Contact: obitton@habana.ai +Description: Displays the device's security status + What: /sys/class/habanalabs/hl/soft_reset Date: Jan 2019 KernelVersion: 5.1 diff --git a/drivers/misc/habanalabs/common/sysfs.c b/drivers/misc/habanalabs/common/sysfs.c index 6c5271f01160..36e9814139d1 100644 --- a/drivers/misc/habanalabs/common/sysfs.c +++ b/drivers/misc/habanalabs/common/sysfs.c @@ -375,6 +375,14 @@ static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj, return max_size; } +static ssize_t security_enabled_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + + return sprintf(buf, "%d\n", hdev->asic_prop.fw_security_enabled); +} + static DEVICE_ATTR_RO(armcp_kernel_ver); static DEVICE_ATTR_RO(armcp_ver); static DEVICE_ATTR_RO(cpld_ver); @@ -393,6 +401,7 @@ static DEVICE_ATTR_RO(status); static DEVICE_ATTR_RO(thermal_ver); static DEVICE_ATTR_RO(uboot_ver); static DEVICE_ATTR_RO(fw_os_ver); +static DEVICE_ATTR_RO(security_enabled); static struct bin_attribute bin_attr_eeprom = { .attr = {.name = "eeprom", .mode = (0444)}, @@ -417,6 +426,7 @@ static struct attribute *hl_dev_attrs[] = { &dev_attr_thermal_ver.attr, &dev_attr_uboot_ver.attr, &dev_attr_fw_os_ver.attr, + &dev_attr_security_enabled.attr, NULL, }; -- 2.25.1