From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 593052E0B74 for ; Tue, 2 Sep 2025 04:56:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756788989; cv=none; b=PSA29VSN5mmr5rcULygXpvKauiZEW0Jfk+FZA3ojS+fvBiMax6GLp4iArPZTXJOtyFEB85Y3WRN3xnQ+y9g5DMMITcZsi5fTGFpzahGrc79xRDlHt0KxabyxRL2p9sFnnrm4ipLx8vOHWIn2zqFxJIeAZnKSnPVE19CJIgLOGnM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756788989; c=relaxed/simple; bh=+8dSfgrMG4eFIFtqJ20ROAswX13YmpqsL2XfyfUksAU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=gz0Znjp78IlY3iFOGZBGdYqvCckMTblZ6XH7ufQ0Gn7s86s+eaXZ4dKOW3aTbSB93S5xp8j8/ARn5HCnJ8+RlXfJuRt5fkjFpPyxldE11X8yQJK1Jvke2PHVWQCpAVEgO/sarMegjzNAILrFes5Y8gTcldPo9U8vp/SVchtFC+E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=K7Jx23P4; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="K7Jx23P4" Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5822SgeW016289 for ; Tue, 2 Sep 2025 04:56:26 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= GaTc6vdim5GJ1OsrX7tFizDxK1+T66nxGle441QICfs=; b=K7Jx23P4OZAQr2fo AoDZTIxkFNqDxtNAi4dl7V0k7NeD4Eb6KdixcLg8/OUoqdtDP7JLVGnbLl/bwANz UX2DCly6R5Tlhv87gPz1UdXeDt7Nv5AssN5h1JbRr/N4FYXd6QNElXtYySA97Qbw 6b8VACBFKswkoiMFzyOmDsgGli5tBf29DZZfJiTc7/Jyq9j8KrUoaf5NaLCEU2To rco9g2JAjBGq4Z2hpX/Uw+zt6h/j4l3SSBMky8HqSHRFfGy3UMx+g+rxx2Zh6FmJ lPhJ9SQAsHl+x+Z9SZho9uZSqswFN5et+9bOv/Z26VRGK5mywWYnItMgAZ9Tzxf2 5W1d7Q== Received: from mail-pl1-f199.google.com (mail-pl1-f199.google.com [209.85.214.199]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 48urvyxhr5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 02 Sep 2025 04:56:26 +0000 (GMT) Received: by mail-pl1-f199.google.com with SMTP id d9443c01a7336-248fbfc35ddso72416425ad.3 for ; Mon, 01 Sep 2025 21:56:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756788985; x=1757393785; 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=GaTc6vdim5GJ1OsrX7tFizDxK1+T66nxGle441QICfs=; b=CiWExn1YA8Td9DkSb/EL5x5G27Um4jy8sotOQ6+qri/kYGPmhOxdnFq3ocevtNT2Us h8AhTDO3WahPwqpYxgud0zSXRN3KfhKKGENC5yODpUYIax9sJEKQiLHibD2K2XxyViV9 EWI8GBnmNLoV4zLmIOj1vYZAGR75VlfzUgd86nrmdY9lrdtrlPgRWhhX1PCiqwOulntW k7KeuNFIzeWNXsRCMzfuDFjWGJH5LVbNNqGBQxewfzp3NkxKEfk/CED0UOSQ1AOFaRVw +NLocm2zIZDi9FbAx8BhUkUu+dSgKt4Mtweo7tBKmfQZb2/7qlZp49ne56Cedn0su6Bg UzZg== X-Forwarded-Encrypted: i=1; AJvYcCX8dtWov3FC5KqT4ZWkHSH1mJ19OXW9f8Ig8SWP4Y81hoze9gFyYPrRY90ncpbTO2Be4n+muC1JD4BM0DU=@vger.kernel.org X-Gm-Message-State: AOJu0YxBE1fq7MthsdWY+7RbGpA1hwbMPmfgNjDyKGasXqUUCC0sm3pM UBrO9mywgZpjATKA+5K7bmSS2mzitZKTb727Xie8bNrKLTYXVHiK+gBYOKtGEqM+Jinq3trtlj2 BgO14dQXFanKiVY8nPndM2nEfqK0ExRxvINtGLmPsdEMn+GI5mQ42+iJERe/yqaH4Lw== X-Gm-Gg: ASbGncuDf0Pmhoti3nzdFIXgGGkvKqjhyaTspkziJyNfj1wrkgUmSXYntmkJT/b4nCj Bskeh0nwh8tcKMnyr/nU4Pjgp6TTCy2wWHgzVbxv+3KkhYR6vrK1mJSwsReI2CAP49dos6uWSKu ku3Vmx8L+XpbK6Wx0DBG17omGF1V98KUgmnkY7Lt3f32V6QpQvEXzUNZXt/ECiNHdM2BtrH6wNN p4e9P0IRc0wWcyBOhZERm+mo9IRE3e6VLlBkn1OEMJmAIrIiJZJ7DxJYRlKnafK926Yhgm8XMP3 TMYOASOEDjMgOb24BSJvYMxUx550XflMMoUlKBsSB30gvE5kXO93/p8ps2QcoLalltFJO2hWiXY JL9dtfyRZ5/LQ1XqFxD0aj20= X-Received: by 2002:a17:903:41c9:b0:249:147:95bb with SMTP id d9443c01a7336-249448de13fmr111598085ad.13.1756788985024; Mon, 01 Sep 2025 21:56:25 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHXaX1HfNEFgce/CqpAqiFLPHSgKmmTTu1lgTlIqGkApoJFe4/E3D7TAwWkW5ibXkmVnGac2g== X-Received: by 2002:a17:903:41c9:b0:249:147:95bb with SMTP id d9443c01a7336-249448de13fmr111597865ad.13.1756788984558; Mon, 01 Sep 2025 21:56:24 -0700 (PDT) Received: from hu-azarrabi-lv.qualcomm.com (Global_NAT1.qualcomm.com. [129.46.96.20]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-24b1f30a63asm1795345ad.66.2025.09.01.21.56.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Sep 2025 21:56:24 -0700 (PDT) From: Amirreza Zarrabi Date: Mon, 01 Sep 2025 21:55:56 -0700 Subject: [PATCH v9 09/11] tee: qcom: add primordial object Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250901-qcom-tee-using-tee-ss-without-mem-obj-v9-9-a2af23f132d5@oss.qualcomm.com> References: <20250901-qcom-tee-using-tee-ss-without-mem-obj-v9-0-a2af23f132d5@oss.qualcomm.com> In-Reply-To: <20250901-qcom-tee-using-tee-ss-without-mem-obj-v9-0-a2af23f132d5@oss.qualcomm.com> To: Jens Wiklander , Sumit Garg , Bjorn Andersson , Konrad Dybcio , Bartosz Golaszewski , Apurupa Pattapu , Kees Cook , "Gustavo A. R. Silva" , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: Harshal Dev , linux-arm-msm@vger.kernel.org, op-tee@lists.trustedfirmware.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-doc@vger.kernel.org, Amirreza Zarrabi , Sumit Garg , Neil Armstrong X-Mailer: b4 0.13.0 X-Proofpoint-GUID: g6JCLbhbQYBg0dxys1GCft57Tt-ea8Ys X-Proofpoint-ORIG-GUID: g6JCLbhbQYBg0dxys1GCft57Tt-ea8Ys X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODMwMDAyNyBTYWx0ZWRfX/aVMZxZRJLGP Eaw7fV1KWW8dI6qxXs+z3APwgFGvIwP601U0nJwpOBmC7gSlqDmuB01e9QevGFMbvcLGsjDNVE5 7mOBhYpOY+CtoZ3tyWz5KhyJrlwnPgqEjQaUyc4+C1e4lFekJqxow/ijuKG6+5Lb84gi9K3T8Ha NTxibvmFZvVne3ESzLg9aKrafhbz7v7g2Kp3Mu3Tl+eukXZ/vqbMRsXF+ezUaQfQAJ8UBx5DabS UqV/slCPBfCtlgAIIG+6kXCKBCm10pyYRKUhnH+ZRPnIzGu22D8FsCeziCa07sZU4fiu8F/Sin4 AwHpZxfvw+Wpnuj+Oxt3X0pCDAYmHahxjqvosPdUvJGZfxirObgJrp/afMp7RghckBHnQbUSZEI Vfars9A5 X-Authority-Analysis: v=2.4 cv=NrDRc9dJ c=1 sm=1 tr=0 ts=68b678fa cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=KKAkSRfTAAAA:8 a=COk6AnOGAAAA:8 a=6dJEewf6gjddJ4Qna_sA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 a=cvBusfyB2V15izCimMoJ:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-02_01,2025-08-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 malwarescore=0 priorityscore=1501 phishscore=0 impostorscore=0 spamscore=0 bulkscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508300027 After booting, the kernel provides a static object known as the primordial object. This object is utilized by QTEE for native kernel services such as yield or privileged operations. Acked-by: Sumit Garg Tested-by: Neil Armstrong Tested-by: Harshal Dev Signed-off-by: Amirreza Zarrabi --- drivers/tee/qcomtee/Makefile | 1 + drivers/tee/qcomtee/core.c | 19 ++++++++--- drivers/tee/qcomtee/primordial_obj.c | 63 ++++++++++++++++++++++++++++++++++++ drivers/tee/qcomtee/qcomtee.h | 3 ++ 4 files changed, 81 insertions(+), 5 deletions(-) diff --git a/drivers/tee/qcomtee/Makefile b/drivers/tee/qcomtee/Makefile index 600af2b8f1c1..78f8e899d143 100644 --- a/drivers/tee/qcomtee/Makefile +++ b/drivers/tee/qcomtee/Makefile @@ -3,5 +3,6 @@ obj-$(CONFIG_QCOMTEE) += qcomtee.o qcomtee-objs += async.o qcomtee-objs += call.o qcomtee-objs += core.o +qcomtee-objs += primordial_obj.o qcomtee-objs += shm.o qcomtee-objs += user_obj.o diff --git a/drivers/tee/qcomtee/core.c b/drivers/tee/qcomtee/core.c index b6931ed6f200..783acc59cfa9 100644 --- a/drivers/tee/qcomtee/core.c +++ b/drivers/tee/qcomtee/core.c @@ -31,10 +31,12 @@ int qcomtee_next_arg_type(struct qcomtee_arg *u, int i, } /* - * QTEE expects IDs with the QCOMTEE_MSG_OBJECT_NS_BIT set for objects - * of the QCOMTEE_OBJECT_TYPE_CB type. + * QTEE expects IDs with QCOMTEE_MSG_OBJECT_NS_BIT set for objects of + * QCOMTEE_OBJECT_TYPE_CB type. The first ID with QCOMTEE_MSG_OBJECT_NS_BIT + * set is reserved for the primordial object. */ -#define QCOMTEE_OBJECT_ID_START (QCOMTEE_MSG_OBJECT_NS_BIT + 1) +#define QCOMTEE_OBJECT_PRIMORDIAL (QCOMTEE_MSG_OBJECT_NS_BIT) +#define QCOMTEE_OBJECT_ID_START (QCOMTEE_OBJECT_PRIMORDIAL + 1) #define QCOMTEE_OBJECT_ID_END (U32_MAX) #define QCOMTEE_OBJECT_SET(p, type, ...) \ @@ -157,7 +159,9 @@ static void qcomtee_object_release(struct kref *refcount) */ int qcomtee_object_get(struct qcomtee_object *object) { - if (object != NULL_QCOMTEE_OBJECT && object != ROOT_QCOMTEE_OBJECT) + if (object != &qcomtee_primordial_object && + object != NULL_QCOMTEE_OBJECT && + object != ROOT_QCOMTEE_OBJECT) return kref_get_unless_zero(&object->refcount); return 0; @@ -169,7 +173,9 @@ int qcomtee_object_get(struct qcomtee_object *object) */ void qcomtee_object_put(struct qcomtee_object *object) { - if (object != NULL_QCOMTEE_OBJECT && object != ROOT_QCOMTEE_OBJECT) + if (object != &qcomtee_primordial_object && + object != NULL_QCOMTEE_OBJECT && + object != ROOT_QCOMTEE_OBJECT) kref_put(&object->refcount, qcomtee_object_release); } @@ -261,6 +267,9 @@ qcomtee_local_object_get(struct qcomtee_object_invoke_ctx *oic, struct qcomtee *qcomtee = tee_get_drvdata(oic->ctx->teedev); struct qcomtee_object *object; + if (object_id == QCOMTEE_OBJECT_PRIMORDIAL) + return &qcomtee_primordial_object; + guard(rcu)(); object = xa_load(&qcomtee->xa_local_objects, object_id); /* It already checks for %NULL_QCOMTEE_OBJECT. */ diff --git a/drivers/tee/qcomtee/primordial_obj.c b/drivers/tee/qcomtee/primordial_obj.c new file mode 100644 index 000000000000..0e43f04493e2 --- /dev/null +++ b/drivers/tee/qcomtee/primordial_obj.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#include +#include "qcomtee.h" + +/** + * DOC: Primordial Object + * + * After boot, the kernel provides a static object of type + * %QCOMTEE_OBJECT_TYPE_CB called the primordial object. This object is used + * for native kernel services or privileged operations. + * + * We support: + * - %QCOMTEE_OBJECT_OP_YIELD to yield by the thread running in QTEE. + * - %QCOMTEE_OBJECT_OP_SLEEP to wait for a period of time. + */ + +#define QCOMTEE_OBJECT_OP_YIELD 1 +#define QCOMTEE_OBJECT_OP_SLEEP 2 + +static int +qcomtee_primordial_obj_dispatch(struct qcomtee_object_invoke_ctx *oic, + struct qcomtee_object *primordial_object_unused, + u32 op, struct qcomtee_arg *args) +{ + int err = 0; + + switch (op) { + case QCOMTEE_OBJECT_OP_YIELD: + cond_resched(); + /* No output object. */ + oic->data = NULL; + break; + case QCOMTEE_OBJECT_OP_SLEEP: + /* Check message format matched QCOMTEE_OBJECT_OP_SLEEP op. */ + if (qcomtee_args_len(args) != 1 || + args[0].type != QCOMTEE_ARG_TYPE_IB || + args[0].b.size < sizeof(u32)) + return -EINVAL; + + msleep(*(u32 *)(args[0].b.addr)); + /* No output object. */ + oic->data = NULL; + break; + default: + err = -EINVAL; + } + + return err; +} + +static struct qcomtee_object_operations qcomtee_primordial_obj_ops = { + .dispatch = qcomtee_primordial_obj_dispatch, +}; + +struct qcomtee_object qcomtee_primordial_object = { + .name = "primordial", + .object_type = QCOMTEE_OBJECT_TYPE_CB, + .ops = &qcomtee_primordial_obj_ops +}; diff --git a/drivers/tee/qcomtee/qcomtee.h b/drivers/tee/qcomtee/qcomtee.h index f34be992e68b..084b3882017e 100644 --- a/drivers/tee/qcomtee/qcomtee.h +++ b/drivers/tee/qcomtee/qcomtee.h @@ -140,4 +140,7 @@ int qcomtee_user_object_submit(struct tee_context *ctx, struct tee_param *params, int num_params, int req_id, int errno); +/* (2) Primordial Object. */ +extern struct qcomtee_object qcomtee_primordial_object; + #endif /* QCOMTEE_H */ -- 2.34.1