From patchwork Mon Nov 6 12:04:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 13446806 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D2923C4167B for ; Mon, 6 Nov 2023 12:05:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+T86tynyftJXwwzGtzJnJ/jy0ZPedsjmoP8zUZvIyUU=; b=ZwTZ0JRQekVAsG LuNuIqVbVFO4YO3WGsjgcFZCIyJHCm84osP1Ft/CjhMKUp5RigG1VzmAR/a0Lf4cfuXdQ+TcHR7yW H84qK/cHgpyzuktixSrj+HGwttrq743+HmKb5EITzFPKyboZLw1H+w11tZem02vi/111gd9nyl32T HQldtrcgOYdDOiDBYGbm8zRXcvcTU/hD+4JIV6fM+aJ9IZwiNOVqOUwvGlxZ3ZmhcZToWgLy6ZIZQ RLQdvWI+FpD+JUl8JecY+HoSFsMjgVQ2UA9RNValRglFMJJ/MC1kk6Ea8Gzk8lIpgzltT/9Hvp9b+ /JoLJcCXnHzdz6Q/xw6A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qzyM3-00GaMx-0E; Mon, 06 Nov 2023 12:05:19 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qzyLt-00GaCl-10; Mon, 06 Nov 2023 12:05:10 +0000 X-UUID: b6698ee87c9c11ee9b7791016c24628a-20231106 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=xaXSYYp/R/Yb59Wdv7tahHP4Ng033IFyHb7NA8pgCLk=; b=WaoOShaHmylv9HtgnJK2dNAjzZtYqMfQjiwIhDO9jumxvmvjD6jTfY2Ij9Z0S1BeYTk8Abw/KoLFacsJZPIDdvKiwo1/1sNKRIpy/mspQ8hQ5RbSnTgnnQq8CrEUT7XlAvfvdp6q5IQsgpQOe2qo/wzOrhsfNUyaAqPS5CAwyoY=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.33,REQID:816e2b2e-2d20-420b-9309-1c9bdc0d3476,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:364b77b,CLOUDID:18495472-1bd3-4f48-b671-ada88705968c,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO, DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: b6698ee87c9c11ee9b7791016c24628a-20231106 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 55104036; Mon, 06 Nov 2023 05:05:01 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Mon, 6 Nov 2023 20:04:26 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Mon, 6 Nov 2023 20:04:25 +0800 From: Yunfei Dong To: Jeffrey Kardatzke , "T . J . Mercier" , John Stultz , Yong Wu , =?utf-8?q?N=C3=ADcolas_F_=2E_R_=2E_A_=2E_Pr?= =?utf-8?q?ado?= , Nicolas Dufresne , Hans Verkuil , AngeloGioacchino Del Regno , Benjamin Gaignard , Nathan Hebert CC: Chen-Yu Tsai , Hsin-Yi Wang , Fritz Koenig , Daniel Vetter , "Steve Cho" , Yunfei Dong , , , , , , Subject: [PATCH v2,01/21] v4l2: add secure memory flags Date: Mon, 6 Nov 2023 20:04:03 +0800 Message-ID: <20231106120423.23364-2-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231106120423.23364-1-yunfei.dong@mediatek.com> References: <20231106120423.23364-1-yunfei.dong@mediatek.com> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--3.729000-8.000000 X-TMASE-MatchedRID: 1EkN8wfBE2kXSulpnju2H4SvKOGqLLPKK2i9pofGVStcU0dNErOD+mlF 7OhYLlctcYKRVYWgduVAw/iJrysrSm+IsUfG75P2joyKzEmtrEeQoBr+SFneJJj9R7obtcgyH5L 2GhBQtff4ei4a6fEfjpynPbWEKM6u8xjBEybW2by3HA8h5a0MOXnL427v8Q461gisw2JKo8k86a y9NNiI8eLzNWBegCW2wgn7iDBesS0nRE+fI6etksezPriNOMMa5evK5QqVTFyJjYpg0md7nwGuY jlJhX2RTAsYtPFcm2AFxhhkRSbhgvVEcnBy2ijPFj2h5F4GY+ndddgV66Y3YYSVUZZHNLr+RgV6 Hsqyx11QaONuZ6Jr4g9k3l8EaYIcDiKmdrlEg1g= X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--3.729000-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 9864FE8686BDE13139414B2CB77751A0FE1C12DDB68367C23E2FAB1D8E76EF7F2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231106_040509_417969_60CA0F44 X-CRM114-Status: GOOD ( 13.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jeffrey Kardatzke Adds a V4L2 flag which indicates that a queue is using secure dmabufs and the corresponding capability flag. Signed-off-by: Jeffrey Kardatzke Signed-off-by: Yunfei Dong --- include/media/videobuf2-core.h | 8 +++++++- include/uapi/linux/videodev2.h | 2 ++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 4b6a9d2ea372..f6333d8fa617 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -518,6 +518,9 @@ struct vb2_buf_ops { * ->finish(). * @non_coherent_mem: when set queue will attempt to allocate buffers using * non-coherent memory. + * @allow_secure_mem: when set user-space can pass the %V4L2_MEMORY_FLAG_SECURE + * flag to indicate the dma bufs are secure. + * @secure_mem: when set queue will verify that the dma bufs are secure. * @lock: pointer to a mutex that protects the &struct vb2_queue. The * driver can set this to a mutex to let the v4l2 core serialize * the queuing ioctls. If the driver wants to handle locking @@ -598,6 +601,8 @@ struct vb2_queue { unsigned int uses_requests:1; unsigned int allow_cache_hints:1; unsigned int non_coherent_mem:1; + unsigned int allow_secure_mem:1; + unsigned int secure_mem:1; struct mutex *lock; void *owner; @@ -766,7 +771,8 @@ void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb); * @q: pointer to &struct vb2_queue with videobuf2 queue. * @memory: memory type, as defined by &enum vb2_memory. * @flags: auxiliary queue/buffer management flags. Currently, the only - * used flag is %V4L2_MEMORY_FLAG_NON_COHERENT. + * used flags are %V4L2_MEMORY_FLAG_NON_COHERENT and + * %V4L2_MEMORY_FLAG_SECURE. * @count: requested buffer count. * * Videobuf2 core helper to implement VIDIOC_REQBUF() operation. It is called diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index c3d4e490ce7c..4bf8d392d5a5 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1026,6 +1026,7 @@ struct v4l2_requestbuffers { }; #define V4L2_MEMORY_FLAG_NON_COHERENT (1 << 0) +#define V4L2_MEMORY_FLAG_SECURE (1 << 1) /* capabilities for struct v4l2_requestbuffers and v4l2_create_buffers */ #define V4L2_BUF_CAP_SUPPORTS_MMAP (1 << 0) @@ -1035,6 +1036,7 @@ struct v4l2_requestbuffers { #define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4) #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5) #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6) +#define V4L2_BUF_CAP_SUPPORTS_SECURE_MEM (1 << 7) /** * struct v4l2_plane - plane info for multi-planar buffers