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Mon, 03 Aug 2026 09:31:36 -0700 (PDT) Received: from hu-neersoni-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13fab4cb50dsm54592761c88.10.2026.08.03.09.31.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Aug 2026 09:31:35 -0700 (PDT) From: Neeraj Soni To: ebiggers@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: quic_dmukhopa@quicinc.com, quic_rampraka@quicinc.com, quic_nitirawa@quicinc.com, quic_sachgupt@quicinc.com, quic_bhaskarv@quicinc.com, quic_gaurkash@quicinc.com, quic_sartgarg@quicinc.com, ram.gupta@oss.qualcomm.com, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, neeraj.soni@oss.qualcomm.com Subject: [PATCH v6 1/2] mmc: Allow host driver to control the re-programming of crypto keys Date: Mon, 3 Aug 2026 22:01:22 +0530 Message-Id: <20260803163123.1802005-2-neeraj.soni@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260803163123.1802005-1-neeraj.soni@oss.qualcomm.com> References: <20260803163123.1802005-1-neeraj.soni@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODAzMDE0OCBTYWx0ZWRfX9YsM5cQz4vXU pGjansm4B35ASl+FO0pb1fQfM3l2ouUyz+luF+7p8vEU00EzvwnLrVWKuUo4BZ5N/FkebidBf5m kGpsTiOu8zcxTfA64XsTXeAA7ndNPGoKLSu/6fBEvwSZJVmNduo4Z5lX1uvEavWhjheRK3fOj1b iNN7vcImAaCyiAgTPB356u6PKCZOu8hYhXOhVxctPV73/CvcL86ESuDdUdcxGIXqSTfKSpbYgmZ JKbdt4rfBE4F8kzJoRitoCnQ75kQBglM6GFbN95+4ad1U+9a7GG65P+8zGRcoeoi0tRBUFru6ip /xqWx6xF0RYtKoRi2FQ+QxkShS0Uf3OTxoXW5iUyA1Pqjm8VeDVK/2Y4cUdciOIZ9cZsm2NALlA D2ZSzbdU3IIooYNV6pt3/jsjsjHSMmjkgvoEapQbmnnwuqunvuX5GgqYG9VdMldzgIrwax6vLIM NHSl0y8gCDx+Kq77RGA== X-Authority-Analysis: v=2.4 cv=TIt1jVla c=1 sm=1 tr=0 ts=6a70c269 cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=COk6AnOGAAAA:8 a=EUspDBNiAAAA:8 a=JtzH_wN-VhvO7tw2ChoA:9 a=uKXjsCUrEbL0IQVhDsJ9:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: u84B43fsWaKtV9Ifkw5lD5il132CLiNz X-Proofpoint-Spam-Info: AW1haW4tMjYwODAzMDE0OCBTYWx0ZWRfX2bTY4/HXbQcL 7OLKbCbgRpu+hZ4VdJAWt79XfvMYrqIK/VX94CTVcAh1GOd/h6HSMeZkJEG1d7my8UPHUMHszx+ O3UrSXAmWZfSduGhRXWh2D4PrGgftgY= X-Proofpoint-GUID: u84B43fsWaKtV9Ifkw5lD5il132CLiNz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-03_03,2026-08-03_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 phishscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 spamscore=0 suspectscore=0 impostorscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608030148 The register context for the crypto profile belongs to the sdhci/cqhci host and not the mmc card, hence re-programming should be managed by the host driver itself. Add the flag MMC_CAP2_CRYPTO_NO_REPROG as part of host->caps2 to control reprogramming keys to crypto engine for SoCs which do not require this feature. Signed-off-by: Seshu Madhavi Puppala Co-developed-by: Ram Prakash Gupta Signed-off-by: Ram Prakash Gupta Co-developed-by: Sarthak Garg Signed-off-by: Sarthak Garg Signed-off-by: Debraj Mukhopadhyay Signed-off-by: Neeraj Soni --- drivers/mmc/core/crypto.c | 2 +- include/linux/mmc/host.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/core/crypto.c b/drivers/mmc/core/crypto.c index fec4fbf16a5b..a5a90bfc634e 100644 --- a/drivers/mmc/core/crypto.c +++ b/drivers/mmc/core/crypto.c @@ -15,7 +15,7 @@ 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) + if ((host->caps2 & MMC_CAP2_CRYPTO) && !(host->caps2 & MMC_CAP2_CRYPTO_NO_REPROG)) blk_crypto_reprogram_all_keys(&host->crypto_profile); } diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index ba84f02c2a10..3c3c45fdf39b 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -463,6 +463,7 @@ struct mmc_host { #define MMC_CAP2_CRYPTO 0 #endif #define MMC_CAP2_ALT_GPT_TEGRA (1 << 28) /* Host with eMMC that has GPT entry at a non-standard location */ +#define MMC_CAP2_CRYPTO_NO_REPROG (1 << 29) /* Host handles inline crypto key reprogramming */ bool uhs2_sd_tran; /* UHS-II flag for SD_TRAN state */ bool uhs2_app_cmd; /* UHS-II flag for APP command */ -- 2.34.1