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 861C421148C for ; Fri, 28 Mar 2025 02:48:30 +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=1743130114; cv=none; b=H6XIHzE/bh3306prF3rs6BnKqnOQ7w4oGFUl4WA2yiauFdBWegSqnGbgE/zA/HeyMBx2bdL+ZAwIG57vW5i+d9Thlx6yknEHhC7pvIy/D+qsmcJFJYAc5K6sybq6aj0F1dr/uZXzuGGUrzLmaVqfbXQ6oru/7oqDxSxgjt2EGfI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743130114; c=relaxed/simple; bh=NZ9UoQrDtsa/bdxaCCDtRbtSyRUdRiMoDWerA6WxR6c=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=oDhQEQ3f6YcvSMuoRWYBqqWo1kdD+ZcWgCZa9g1dv9jMc9wsDhrbPSdzdpzvuAu/bOg3MDcKLZZX2kkknWyDAmCZXzZGsaQuWQZpgOmewSo4HWA2wNSNnf5UstJe0iaSkGQ3cDF07QNtKF6MbfLfRFPe6YH1OmqB9RpIRxMioJw= 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=cmm9uEWV; 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="cmm9uEWV" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 52REQB2P003117 for ; Fri, 28 Mar 2025 02:48:29 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= IWH0nupKGoXHcFbzQxDgDKgTTIrB45evqE6KF6xol4Q=; b=cmm9uEWV1oeL8jPl MZVPPVx/4ZLP/0uZyhNkOysZJYIlURsbiOcbhp9287dAHOSzVN0owQEWzpoX/U8M u8oYodI8dXj+TQxf3nKFcTYpAi4L9fGBEUROs7Js74yaAxRGvgOO7Rbpep+2tcOe xwqrtdBlTdc/5NQH+ntXoKRX+LR8MR046dAHHNV/t1RfGB9EuzQJtSZ9B/VM5Kqv bQkOQ+jHKDRYEvqfKXAlZnCaTB6YHWYadkg0U8MCQmNmBeRvg0Bnq8RGE90NCqcG DGrU37NkA8q4LlNmN2Ig/EOany7qaIVdGR3LwCdLHEeeyGcJXWdoYVbQDZAE1Kk4 e9q2qA== Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 45m0xe03wh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 28 Mar 2025 02:48:29 +0000 (GMT) Received: by mail-pl1-f200.google.com with SMTP id d9443c01a7336-2242f3fd213so27704915ad.1 for ; Thu, 27 Mar 2025 19:48:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743130108; x=1743734908; 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=IWH0nupKGoXHcFbzQxDgDKgTTIrB45evqE6KF6xol4Q=; b=V9LQ+5MH4Cw85cByADkDqg29O8N2tyvIxe6soiilzmZJdbaLZzZBZQJaKFhWT2wPt3 yZuNWfW1enO6NPxuDhfH1GYYdcAZ2e7FTku+k2x+oCblDi1q68e5SUw9DMR07L/2gAVc dQpnQGhPlzIXr/ze3ZAOmPHjm0T8XIlqw3AZqtoRebhUe4ltYBrnhQj9pGjZAZ1FXq3o GNrDgQ1IuoX6F0sMZDJAtQwJ5ywvnNmtIpDXsGe9KeD2nSJV2hbN1Gv8baIB8cg9EPWq p8AezEQG2IgUOSpFXIwTV/xkSnp11zeZA+Ry13P6VZH8ZVEF2E7NdS/j+ZYVnyatm5BQ nwuQ== X-Forwarded-Encrypted: i=1; AJvYcCUUncgJfKt7Eh9Z9OsLryBdEgmes6fdoOpOu/VahXp4K+lslSIYY/Yn9NzP6JSWHwH5EKjEF82z6bXHPDM=@vger.kernel.org X-Gm-Message-State: AOJu0YyZ4HQLaISjp5KoWuR40LVCwaqQgClDOyAYVFCKbpUysp5iZtW/ 4cY2fMbr9riPeOyp5/0blW9GybfXcrrhbtTLFD6MRV3O/t8y0FE+/qKHVxklBr/3wA04yodzkia cWW2aAOdbLjKuftAJbXCVBiFORHuh64jg/dim5H9h9zJmZIdSMagWmRgAZxodLQ== X-Gm-Gg: ASbGncsJHqTgOFSrAegSudL8fW4l7ffnVz2zLPIUUwM6rAmZL/3MM9LZrQ2Q/vJv+On iqFW8mErqxPQldR3WyOxL4SnZ6+N2JlGYgkJjfUQ+RQUktGYnnYH2ehGNVIxuEUwavx87EurO5/ b3Jg0S4nQIHjXCu115WVhTCAv6RJ+BxoYTpGtS6a0JyKjEp0GACCbA5qokCbXqRFH/h4qpVpG90 khGvrvuZBdSkJgyAwmt0RSQuslj8Lu2btv2LBGC+hQxIRWAOIIu2LeRG+nAWUZoDfJOzQbeZRxp oPtscTwAVebF4N5LB2zle2iUREAqDoIuDzZivUsh5InJUvICHMP4TaABPB0waETcIRgWxM6UFu0 = X-Received: by 2002:a17:902:cccc:b0:224:584:6eef with SMTP id d9443c01a7336-22804931682mr102373995ad.41.1743130107548; Thu, 27 Mar 2025 19:48:27 -0700 (PDT) X-Google-Smtp-Source: AGHT+IG376plMAvRztvVxrFSFDPsbw7FDsAlz+S1si6EBOZRDE9gW0Z4qYLof7JAVDpMRLsJ8rwJEA== X-Received: by 2002:a17:902:cccc:b0:224:584:6eef with SMTP id d9443c01a7336-22804931682mr102373515ad.41.1743130107044; Thu, 27 Mar 2025 19:48:27 -0700 (PDT) Received: from hu-azarrabi-lv.qualcomm.com (Global_NAT1.qualcomm.com. [129.46.96.20]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2291eeca203sm7317565ad.30.2025.03.27.19.48.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Mar 2025 19:48:26 -0700 (PDT) From: Amirreza Zarrabi Date: Thu, 27 Mar 2025 19:47:29 -0700 Subject: [PATCH v3 07/11] firmware: qcom: tzmem: export shm_bridge create/delete 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: <20250327-qcom-tee-using-tee-ss-without-mem-obj-v3-7-7f457073282d@oss.qualcomm.com> References: <20250327-qcom-tee-using-tee-ss-without-mem-obj-v3-0-7f457073282d@oss.qualcomm.com> In-Reply-To: <20250327-qcom-tee-using-tee-ss-without-mem-obj-v3-0-7f457073282d@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: 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 X-Mailer: b4 0.13.0 X-Proofpoint-ORIG-GUID: VedKsy9SG6gKRvAhR9kS4hbP0-ZIK3Ok X-Proofpoint-GUID: VedKsy9SG6gKRvAhR9kS4hbP0-ZIK3Ok X-Authority-Analysis: v=2.4 cv=Q43S452a c=1 sm=1 tr=0 ts=67e60dfd cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=Vs1iUdzkB0EA:10 a=EUspDBNiAAAA:8 a=F9FMNDSCD7THEPBdllMA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-28_01,2025-03-27_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 spamscore=0 suspectscore=0 adultscore=0 mlxlogscore=999 malwarescore=0 mlxscore=0 priorityscore=1501 clxscore=1015 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503280017 Anyone with access to contiguous physical memory should be able to share memory with QTEE using shm_bridge. Signed-off-by: Amirreza Zarrabi --- drivers/firmware/qcom/qcom_tzmem.c | 57 +++++++++++++++++++++++++------- include/linux/firmware/qcom/qcom_tzmem.h | 15 +++++++++ 2 files changed, 60 insertions(+), 12 deletions(-) diff --git a/drivers/firmware/qcom/qcom_tzmem.c b/drivers/firmware/qcom/qcom_tzmem.c index 548dbd346b1b..a02913665801 100644 --- a/drivers/firmware/qcom/qcom_tzmem.c +++ b/drivers/firmware/qcom/qcom_tzmem.c @@ -107,25 +107,61 @@ static int qcom_tzmem_init(void) return 0; } -static int qcom_tzmem_init_area(struct qcom_tzmem_area *area) +/** + * qcom_tzmem_shm_bridge_create() - Create a SHM bridge. + * @paddr: Physical address of the memory to share. + * @size: Size of the memory to share. + * @handle: Handle to the SHM bridge. + * + * On platforms that support SHM bridge, this function creates a SHM bridge + * for the given memory region with QTEE. The handle returned by this function + * must be passed to qcom_tzmem_shm_bridge_delete() to free the SHM bridge. + * + * Return: On success, returns 0; on failure, returns < 0. + */ +int qcom_tzmem_shm_bridge_create(phys_addr_t paddr, size_t size, u64 *handle) { u64 pfn_and_ns_perm, ipfn_and_s_perm, size_and_flags; - int ret; if (!qcom_tzmem_using_shm_bridge) return 0; - pfn_and_ns_perm = (u64)area->paddr | QCOM_SCM_PERM_RW; - ipfn_and_s_perm = (u64)area->paddr | QCOM_SCM_PERM_RW; - size_and_flags = area->size | (1 << QCOM_SHM_BRIDGE_NUM_VM_SHIFT); + pfn_and_ns_perm = paddr | QCOM_SCM_PERM_RW; + ipfn_and_s_perm = paddr | QCOM_SCM_PERM_RW; + size_and_flags = size | (1 << QCOM_SHM_BRIDGE_NUM_VM_SHIFT); + if (qcom_scm_shm_bridge_create(pfn_and_ns_perm, ipfn_and_s_perm, + size_and_flags, QCOM_SCM_VMID_HLOS, + handle)) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL_GPL(qcom_tzmem_shm_bridge_create); + +/** + * qcom_tzmem_shm_bridge_delete() - Delete a SHM bridge. + * @handle: Handle to the SHM bridge. + * + * On platforms that support SHM bridge, this function deletes the SHM bridge + * for the given memory region. The handle must be the same as the one + * returned by qcom_tzmem_shm_bridge_create(). + */ +void qcom_tzmem_shm_bridge_delete(u64 handle) +{ + if (qcom_tzmem_using_shm_bridge) + qcom_scm_shm_bridge_delete(handle); +} +EXPORT_SYMBOL_GPL(qcom_tzmem_shm_bridge_delete); + +static int qcom_tzmem_init_area(struct qcom_tzmem_area *area) +{ + int ret; u64 *handle __free(kfree) = kzalloc(sizeof(*handle), GFP_KERNEL); if (!handle) return -ENOMEM; - ret = qcom_scm_shm_bridge_create(pfn_and_ns_perm, ipfn_and_s_perm, - size_and_flags, QCOM_SCM_VMID_HLOS, - handle); + ret = qcom_tzmem_shm_bridge_create(area->paddr, area->size, handle); if (ret) return ret; @@ -138,10 +174,7 @@ static void qcom_tzmem_cleanup_area(struct qcom_tzmem_area *area) { u64 *handle = area->priv; - if (!qcom_tzmem_using_shm_bridge) - return; - - qcom_scm_shm_bridge_delete(*handle); + qcom_tzmem_shm_bridge_delete(*handle); kfree(handle); } diff --git a/include/linux/firmware/qcom/qcom_tzmem.h b/include/linux/firmware/qcom/qcom_tzmem.h index b83b63a0c049..48ac0e5454c7 100644 --- a/include/linux/firmware/qcom/qcom_tzmem.h +++ b/include/linux/firmware/qcom/qcom_tzmem.h @@ -53,4 +53,19 @@ DEFINE_FREE(qcom_tzmem, void *, if (_T) qcom_tzmem_free(_T)) phys_addr_t qcom_tzmem_to_phys(void *ptr); +#if IS_ENABLED(CONFIG_QCOM_TZMEM_MODE_SHMBRIDGE) +int qcom_tzmem_shm_bridge_create(phys_addr_t paddr, size_t size, u64 *handle); +void qcom_tzmem_shm_bridge_delete(u64 handle); +#else +static inline int qcom_tzmem_shm_bridge_create(phys_addr_t paddr, + size_t size, u64 *handle) +{ + return 0; +} + +static inline void qcom_tzmem_shm_bridge_delete(u64 handle) +{ +} +#endif + #endif /* __QCOM_TZMEM */ -- 2.34.1