From patchwork Thu May 16 12:20:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 13666052 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 0737DC25B78 for ; Thu, 16 May 2024 12:21:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding: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=JcgzcwjR79GO/B9Bt02zMcJhSYP+1rHgGT3MDO93Xbk=; b=Q4bwE/0ZLN4gpNnrsW4m7EBjaR 2vXL7c3eGg6SD+7WtBQKhmZ/DxqOXdFxp26YsBnk7x3Gc4nDOUCaofXykEJJDG4YA1J+FeXK1LhRe hM5H1n4sLfCmw5UJ7zTkbLZgXxQrVmfLuWmDuD44h7Alxh80Dhtu9dZwm/d1kGxOi5snRcEkYrgCJ URdLGc3WtQ3s34t3tVyyxbwEQVXTaBmcwDRAONLE9Pt7Hkqsx1DTxHtn+HVyt6vCF/pzcfQn/UHpf 585Z9dBEohL2X63OgK+pggzCCoKpIFunNeR5zdYOhx4hhCV3MxA5Yd4nVUfvHuq43/rvL7MG2x7Hx l8/mDpSg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7a6w-00000004kgG-37yW; Thu, 16 May 2024 12:21:26 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7a6r-00000004kaY-2k0a; Thu, 16 May 2024 12:21:23 +0000 X-UUID: c8b90a1e137e11ef9a78ddf43a9225dc-20240516 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=JcgzcwjR79GO/B9Bt02zMcJhSYP+1rHgGT3MDO93Xbk=; b=cZ2QUts7WTVlpVT+/scVmlr6rGBAuXvitjPqDBEd5Z4Qty8sQ8vSP9+C6WjJ4aP/0UPn6LXJe250ZVpZPSVEIOR15bc5C72gyw1W0tCm3tJIscsozSUldK0w+TtPx3b5FNuQG/6b36VnvbEmnFR807N+UDwG7m7FJvDH2a45COY=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.38,REQID:f6acfe08-91da-483b-94ac-43fe3de9e271,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:82c5f88,CLOUDID:f808f083-4f93-4875-95e7-8c66ea833d57,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT: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: c8b90a1e137e11ef9a78ddf43a9225dc-20240516 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1472174931; Thu, 16 May 2024 05:21:12 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by MTKMBS14N1.mediatek.inc (172.21.101.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Thu, 16 May 2024 20:21:09 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 16 May 2024 20:21:07 +0800 From: Yunfei Dong To: Jeffrey Kardatzke , =?utf-8?q?N=C3=ADcolas_F_=2E_?= =?utf-8?q?R_=2E_A_=2E_Prado?= , Nathan Hebert , "Nicolas Dufresne" , Hans Verkuil , AngeloGioacchino Del Regno , Benjamin Gaignard , Sebastian Fricke , Tomasz Figa , "Mauro Carvalho Chehab" , Marek Szyprowski CC: Chen-Yu Tsai , Yong Wu , "Hsin-Yi Wang" , Fritz Koenig , "Daniel Vetter" , Steve Cho , Yunfei Dong , Sumit Semwal , "Brian Starkey" , John Stultz , "T . J . Mercier" , =?utf-8?q?Christian_K=C3=B6nig?= , Matthias Brugger , , , , , , Subject: [PATCH v6,01/24] v4l2: add restricted memory flags Date: Thu, 16 May 2024 20:20:39 +0800 Message-ID: <20240516122102.16379-2-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240516122102.16379-1-yunfei.dong@mediatek.com> References: <20240516122102.16379-1-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--4.149800-8.000000 X-TMASE-MatchedRID: 5AYjULL74rYxaBEU4bKrV4SvKOGqLLPKK2i9pofGVStcU0dNErOD+mlF 7OhYLlctcYKRVYWgduVAw/iJrysrSm+IsUfG75P2joyKzEmtrEeQoBr+SFneJJj9R7obtcgyH5L 2GhBQtff4ei4a6fEfjpynPbWEKM6u8xjBEybW2by3HA8h5a0MOXnL427v8Q461gisw2JKo8lzN8 /snsNYn/j1N4/6HNKlsGRzEHTW2nEfE8yM4pjsDwtuKBGekqUpOlxBO2IcOBaDB3ZqEXAYAIp/8 8s6zH6CLMa1wLyvYEOVsCHg6a9VM9hNU8cP4jYh/G47AcAybTmwM6AJeCWlbm72iaFWNy7GB1UY UHkmE/jiw6uxviJP8r9tsSiUciBlQ5zsaM5qada/lr1yYih0SylGctXaTCsu X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--4.149800-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 00C8DA871F738AAD29C7BF1F0BB062BED72FEA1C5C526C39E9A7696C95C2C6492000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240516_052121_716666_E9C9E2F2 X-CRM114-Status: GOOD ( 14.77 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Jeffrey Kardatzke Adds a V4L2 flag which indicates that a queue is using restricted 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 955237ac503d..afd497e93a37 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -517,6 +517,9 @@ struct vb2_buf_ops { * ->finish(). * @non_coherent_mem: when set queue will attempt to allocate buffers using * non-coherent memory. + * @allow_restricted_mem: when set user-space can pass the %V4L2_MEMORY_FLAG_RESTRICTED + * flag to indicate the dma bufs are restricted. + * @restricted_mem: when set queue will verify that the dma bufs are restricted. * @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 @@ -621,6 +624,8 @@ struct vb2_queue { unsigned int uses_requests:1; unsigned int allow_cache_hints:1; unsigned int non_coherent_mem:1; + unsigned int allow_restricted_mem:1; + unsigned int restricted_mem:1; struct mutex *lock; void *owner; @@ -792,7 +797,8 @@ void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, 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_RESTRICTED. * @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 fe6b67e83751..89eb1a3c6555 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1043,6 +1043,7 @@ struct v4l2_requestbuffers { }; #define V4L2_MEMORY_FLAG_NON_COHERENT (1 << 0) +#define V4L2_MEMORY_FLAG_RESTRICTED (1 << 1) /* capabilities for struct v4l2_requestbuffers and v4l2_create_buffers */ #define V4L2_BUF_CAP_SUPPORTS_MMAP (1 << 0) @@ -1054,6 +1055,7 @@ struct v4l2_requestbuffers { #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6) #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7) #define V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS (1 << 8) +#define V4L2_BUF_CAP_SUPPORTS_RESTRICTED_MEM (1 << 9) /** * struct v4l2_plane - plane info for multi-planar buffers