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Sun, 06 Oct 2024 13:55:31 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 496DtVmZ015190; Sun, 6 Oct 2024 13:55:31 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-spuppala-hyd.qualcomm.com [10.213.108.54]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 496DtVVH015186; Sun, 06 Oct 2024 13:55:31 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 4137148) id 9C1636017A2; Sun, 6 Oct 2024 19:25:30 +0530 (+0530) From: Seshu Madhavi Puppala To: Ulf Hansson , Adrian Hunter Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, quic_rampraka@quicinc.com, quic_nitirawa@quicinc.com, quic_sachgupt@quicinc.com, quic_bhaskarv@quicinc.com, quic_neersoni@quicinc.com, quic_gaurkash@quicinc.com, quic_spuppala@quicinc.com Subject: [PATCH RFC v3 1/2] mmc: core: Add vendor hook to control reprogram keys to Crypto Engine Date: Sun, 6 Oct 2024 19:25:29 +0530 Message-Id: <20241006135530.17363-2-quic_spuppala@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20241006135530.17363-1-quic_spuppala@quicinc.com> References: <20241006135530.17363-1-quic_spuppala@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: V5GZ3Fmp88sUt84Q4erHAxilWmv4Mppb X-Proofpoint-GUID: V5GZ3Fmp88sUt84Q4erHAxilWmv4Mppb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 impostorscore=0 adultscore=0 lowpriorityscore=0 mlxlogscore=999 mlxscore=0 bulkscore=0 phishscore=0 malwarescore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410060101 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Add mmc_host_ops hook avoid_reprogram_allkeys to control reprogramming keys to Inline Crypto Engine by vendor as some vendors might not require this feature. Signed-off-by: Seshu Madhavi Puppala Co-developed-by: Ram Prakash Gupta Signed-off-by: Ram Prakash Gupta --- drivers/mmc/core/crypto.c | 8 +++++--- drivers/mmc/host/sdhci.c | 6 ++++++ include/linux/mmc/host.h | 7 +++++++ 3 files changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/core/crypto.c b/drivers/mmc/core/crypto.c index fec4fbf16a5b..4168f7d135ff 100644 --- a/drivers/mmc/core/crypto.c +++ b/drivers/mmc/core/crypto.c @@ -14,9 +14,11 @@ void mmc_crypto_set_initial_state(struct mmc_host *host) { - /* Reset might clear all keys, so reprogram all the keys. */ - if (host->caps2 & MMC_CAP2_CRYPTO) - blk_crypto_reprogram_all_keys(&host->crypto_profile); + if (host->ops->avoid_reprogram_allkeys && !host->ops->avoid_reprogram_allkeys()) { + /* Reset might clear all keys, so reprogram all the keys. */ + if (host->caps2 & MMC_CAP2_CRYPTO) + blk_crypto_reprogram_all_keys(&host->crypto_profile); + } } void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index fbf7a91bed35..cd663899c025 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2704,6 +2704,11 @@ int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, } EXPORT_SYMBOL_GPL(sdhci_start_signal_voltage_switch); +static bool sdhci_avoid_reprogram_allkeys(void) +{ + return false; +} + static int sdhci_card_busy(struct mmc_host *mmc) { struct sdhci_host *host = mmc_priv(mmc); @@ -3066,6 +3071,7 @@ static const struct mmc_host_ops sdhci_ops = { .execute_tuning = sdhci_execute_tuning, .card_event = sdhci_card_event, .card_busy = sdhci_card_busy, + .avoid_reprogram_allkeys = sdhci_avoid_reprogram_allkeys, }; /*****************************************************************************\ diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 88c6a76042ee..c4109d17f177 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -218,6 +218,13 @@ struct mmc_host_ops { /* Initialize an SD express card, mandatory for MMC_CAP2_SD_EXP. */ int (*init_sd_express)(struct mmc_host *host, struct mmc_ios *ios); + + /* + * Optional callback to support controllers that dont require to + * reprogram all crypto keys on card suspend/resume. + */ + bool (*avoid_reprogram_allkeys)(void); + }; struct mmc_cqe_ops {