From patchwork Fri Oct 11 18:54:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 834631 Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4D4F31D0DEB for ; Fri, 11 Oct 2024 18:54:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.43 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728672904; cv=none; b=lA0uZhBVLlXUp3C5HOrz/HFmMbS9tNJLTG7oQxar/Ca9wiu4nZ75KM64L7akyDpdO1kObJhAEwfy1mxUySqkdXeVfxlmYq/JQ1bTHnM1hVhokE4Y0m4gEkBqHQ8lIE0hWUFifYPJsTWOL38YW2/MW82v5w7EzT3Ofe/u1HpOMcw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728672904; c=relaxed/simple; bh=e1gtd88RzjTEdKgz5vKtdQEHaWC6suwW5itfB3BJQME=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=qTiaaytdDs0wN9yqI2f3EgS7ZNkznTcm2J1qNuk8Mcj2QA9Ft8v19TnpO7lyhFs11z3ko+cIlYVN8yrHakUaQDT9FEjxB9ltOVq1USxzxvfKi1I/fHrkuryRSZTPHOCfgpPB6xyf3EUrk75+qsXzMy1Oa8wcKW/kk1lSUcuGaR0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl; spf=none smtp.mailfrom=bgdev.pl; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b=p0A8yWx3; arc=none smtp.client-ip=209.85.128.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b="p0A8yWx3" Received: by mail-wm1-f43.google.com with SMTP id 5b1f17b1804b1-430f6bc9ca6so18066605e9.2 for ; Fri, 11 Oct 2024 11:54:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1728672892; x=1729277692; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=H45D+zQ4RlZo87PnQlpnl9k3Po/Ceaj5Q2WfHuVjsjY=; b=p0A8yWx3OoCljbbWdvX+WqHz0Dsg4ejsm68SeCsnGKpsZFz2+z3AKNhmuuSuLzw6ug rxIGcld16NVdxN8Iesbd8WECOerZq7tppUBoA63LMzXXUJMNz2RINMu29sBhXUlpjTE4 7GP70BrfbWKynZb4G/AYt0W+mKoOUvRl0xw9YGmasyNdTv0q3HDI3mfFgXUZTwNiYp2f txunhWxzSiieJ+XxFLzo+jM225ZQwUz19bTeOVpJwGRR7GiCISJUhxhnfltGpOtfeean +bio2aDx0J+o3orHOxRZWeQkD6iYhlYnDhgm1WXWX28kpmw6gdZQbzGPemT42yQiFlNB 3DJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728672892; x=1729277692; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=H45D+zQ4RlZo87PnQlpnl9k3Po/Ceaj5Q2WfHuVjsjY=; b=UJBFAZbDDX0jkk5od5/MvK6MSlgM1Wyw3a4akLfqWzo/ZMy4qQmk8FNqsyVrmUS3GU bFgBN8gLNH1kUZvTgnxNE+Hw9L6o/9bOHdGo4ALDGoCKEvENluEV6wd8yq0fSjTE2XjX v9ixH2C6k7g48aBGmYLEUR2L0BJ/2JpPUOiqLem+WQD3OXiTPHfL2EZQwiDYfeaP30xO EkEoEeqxLNFil4XxCZVJ1i5c3QXeVpeVpMeNoyX7KduCDGgzbKDMmEZ3Kxlxal87WbEz pTeSZQ/2B4q40rpF39Yuan+RRtJysbc/Vl6E22V4y29/IAGQlr5Cv34Z0JCHdnkUorZU RT7g== X-Forwarded-Encrypted: i=1; AJvYcCWqvyck0Dnh44sv9+rj9XU2BtkIKroE5qjgy3MuscrQKdKzfPqXdQIzSpN/dDFs3Acv5aR3MZmBm9g1PykC@vger.kernel.org X-Gm-Message-State: AOJu0Yw0ONtuH14QSggHQeV5LsbDTfktr8rMtPomTlLtHGAoBiGG6UvH ywg7Rvzd2zY9ZaAfuf84y2isouSA45sV6N8bTWTL5vWVjBpgMK67i3yJ+qN+syU= X-Google-Smtp-Source: AGHT+IGoTXSLCWNbiKvBBCB8iuDTBloAvzoGmWYaf2ibRIfcx4PwXi3/91OEiktNbtQQzvwdztwuZg== X-Received: by 2002:a05:600c:190f:b0:431:251a:9dc9 with SMTP id 5b1f17b1804b1-431256099fdmr3480875e9.25.1728672892069; Fri, 11 Oct 2024 11:54:52 -0700 (PDT) Received: from [127.0.1.1] ([2a01:cb1d:dc:7e00:68b8:bef:b7eb:538f]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37d4b79fe7csm4559161f8f.70.2024.10.11.11.54.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Oct 2024 11:54:51 -0700 (PDT) From: Bartosz Golaszewski Date: Fri, 11 Oct 2024 20:54:15 +0200 Subject: [PATCH v7 16/17] ufs: host: add a callback for deriving software secrets and use it Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241011-wrapped-keys-v7-16-e3f7a752059b@linaro.org> References: <20241011-wrapped-keys-v7-0-e3f7a752059b@linaro.org> In-Reply-To: <20241011-wrapped-keys-v7-0-e3f7a752059b@linaro.org> To: Jens Axboe , Jonathan Corbet , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Adrian Hunter , Asutosh Das , Ritesh Harjani , Ulf Hansson , Alim Akhtar , Avri Altman , Bart Van Assche , "James E.J. Bottomley" , "Martin K. Petersen" , Eric Biggers , "Theodore Y. Ts'o" , Jaegeuk Kim , Alexander Viro , Christian Brauner , Jan Kara , Bjorn Andersson , Konrad Dybcio , Manivannan Sadhasivam , Dmitry Baryshkov , Gaurav Kashyap , Neil Armstrong Cc: linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2513; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=8izsipyIaDBdSDiSjvy9mf21cushU27meDYZO8QM7MY=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBnCXRhwyf+sbRZiDFPfQnZmkfF4U7jfh05yXQav c1LkPJCdPeJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCZwl0YQAKCRARpy6gFHHX cqB7D/95mHJd7lZyDeS8zmIiYEZFW6SUNcNDYRflN999g4QScsSRTKlq3MTcag3Ca8ltNUoJIug 39wPTbq1I/X4YXzUshJpgGyNrzQuSZLcNlz/0CdD8URU1pLkFmPyY4MiXpu3oh+NQ/o67QYtiMJ v43/AALUcHRtWLYflg1ZxUAqMPXsG4WK8RtjPxdauvJY1FKhOPEs3hhMpnrAsj5IIbHbot1IxOR 0eyjVtaIbciJa2EnmaMwjUIBNeIBG2O0p4NTSbIwyX3i+wqvemAx4yBWK+RyzKfrCaVhz6a8KcB ov8vJP4nCLNxST6gtuasJ1jiOpE+uqWjm5ec3TBerQiy8tVH/PvTI3EXKSCgacHeeyiF0vhe+ji wR4YvxwSm0y8XK+4lYYv2vOW/viQ4eF3IjxGR64O8g5P1z1OSIeSp2jJ0aTipkSh72yTCm2hMoy eoiYN+G9pZimXdoq1h3ouQz2PExiECAIYS/NE6bsZ3vihyhgExQ24oFpoAhGVPgeK8ma3ReFC2F g+9Iv64HG9yUE1X/w86/vby7nlQ32V464qHqdz7PdMJ3IzZLQCvDhAJCtyHC2iTc/Y5ZeJwfoL1 8lDEtDIK1LNhbGnL0ICafGD5S6YgALrTCClSAxesU0bMYwYiALDVzXhzi4R2slJHNHXjiN0WHRd 2IlGSJY+nTTII6w== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Gaurav Kashyap Add a new UFS core callback for deriving software secrets from hardware wrapped keys and implement it in QCom UFS. Tested-by: Neil Armstrong Signed-off-by: Gaurav Kashyap Signed-off-by: Bartosz Golaszewski --- drivers/ufs/host/ufs-qcom.c | 15 +++++++++++++++ include/ufs/ufshcd.h | 1 + 2 files changed, 16 insertions(+) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 880df3a8955a..862e02bf8f64 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -182,9 +182,23 @@ static int ufs_qcom_ice_program_key(struct ufs_hba *hba, return qcom_ice_evict_key(host->ice, slot); } +/* + * Derive a software secret from a hardware wrapped key. The key is unwrapped in + * hardware from trustzone and a software key/secret is then derived from it. + */ +static int ufs_qcom_ice_derive_sw_secret(struct ufs_hba *hba, const u8 wkey[], + unsigned int wkey_size, + u8 sw_secret[BLK_CRYPTO_SW_SECRET_SIZE]) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + + return qcom_ice_derive_sw_secret(host->ice, wkey, wkey_size, sw_secret); +} + #else #define ufs_qcom_ice_program_key NULL +#define ufs_qcom_ice_derive_sw_secret NULL static inline void ufs_qcom_ice_enable(struct ufs_qcom_host *host) { @@ -1832,6 +1846,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { .device_reset = ufs_qcom_device_reset, .config_scaling_param = ufs_qcom_config_scaling_param, .program_key = ufs_qcom_ice_program_key, + .derive_sw_secret = ufs_qcom_ice_derive_sw_secret, .reinit_notify = ufs_qcom_reinit_notify, .mcq_config_resource = ufs_qcom_mcq_config_resource, .get_hba_mac = ufs_qcom_get_hba_mac, diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index d74a26a36f5b..c172c1dd9209 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -323,6 +323,7 @@ struct ufs_pwr_mode_info { * @device_reset: called to issue a reset pulse on the UFS device * @config_scaling_param: called to configure clock scaling parameters * @program_key: program or evict an inline encryption key + * @derive_sw_secret: derive sw secret from a wrapped key * @fill_crypto_prdt: initialize crypto-related fields in the PRDT * @event_notify: called to notify important events * @reinit_notify: called to notify reinit of UFSHCD during max gear switch