From patchwork Mon Jan 29 06:30:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 13535001 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 3E49AC47DDF for ; Mon, 29 Jan 2024 06:31:11 +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=t8nA4/UXIDaXIOQaM4jUpva22329d1Pul24h+2rSN5E=; b=Zgrzonz4JT3Hzo dx4BfAaysrCxZ3BzOP2n+XNe9x72r3uPxCRiyqiCRMwAXAqq+81uDQoG+b4DspkoQstVRsQKJ5Z/7 YAC1+WiVj7N9+9Bl9wcsaaPukj+L+roXnqHdjWVrMtPe2CsLb5iHkNofWlTforb9ae/FfmHS2TGUJ wUNJiNu0Kl4JnUYAMgGPLA6TO1jSwibaulV1nQzxuRW774iSVuzdLnNAIjClbQLxTmgxkCRY1fSb5 zpqiRDI8cAzEWWHLkQd0Y03yqvurRqDlzERQ+rM6wnPHknC7alynOq6QntqR9MMsv35Axe1reakHy fjDmTRE71hfXjp7ZWXxw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rULAX-0000000BT4B-3lZx; Mon, 29 Jan 2024 06:30:57 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rULAL-0000000BSzJ-36tM; Mon, 29 Jan 2024 06:30:46 +0000 X-UUID: ecb19fbcbe6f11eea0bf134e88e6c2dc-20240128 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=BD29QZW6/FDb7FZtrvhAxAS5CCjAP62wNXiOAvvLw5I=; b=LD+6dD3I0dp1/S9SwTmkafuXqR2ff5p7CQUJ6PKzk/a9+FxrEE4+bwIyvTwmPrY3J6xSMCNS75yEskCAP0ZjgnEysYvrze/7n5c4d4YvOlPmnnJsaz+4j3p8RBKTxjr4GKjN4MPUpVxMvNlyHmdLSa4rM3oCVnjdbNmX7gz1MwM=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.36,REQID:f89db379-030c-4ffc-aed7-dd3f7bc3201e,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:6e16cf4,CLOUDID:d1a85c83-8d4f-477b-89d2-1e3bdbef96d1,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,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: ecb19fbcbe6f11eea0bf134e88e6c2dc-20240128 Received: from mtkmbs14n1.mediatek.inc [(172.21.101.75)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 245743651; Sun, 28 Jan 2024 23:30:41 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Mon, 29 Jan 2024 14:30:38 +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, 29 Jan 2024 14:30:37 +0800 From: Yunfei Dong To: Jeffrey Kardatzke , =?utf-8?q?N=C3=ADcolas_F_=2E_?= =?utf-8?q?R_=2E_A_=2E_Prado?= , Nicolas Dufresne , Hans Verkuil , AngeloGioacchino Del Regno , Benjamin Gaignard , Nathan Hebert 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 v4,02/22] v4l2: handle restricted memory flags in queue setup Date: Mon, 29 Jan 2024 14:30:05 +0800 Message-ID: <20240129063025.29251-3-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240129063025.29251-1-yunfei.dong@mediatek.com> References: <20240129063025.29251-1-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--6.647000-8.000000 X-TMASE-MatchedRID: D0Pm2dEMlxOWHmpvkeKJB57tR0mnRAg1TJDl9FKHbrk1LB46LFAAkq/H ZLCMsEf9UVB7I/2CDSABbn1cvMDZHaEAqPOtlpvtjtK7dC6UBnnbKTxp3+WtIMj0QMA/92m24ft l+EKh+CByQYB2WJEWjc4upQc4xGVCue4A1S8vO3qUa50su1E7W7l8khgtUner0rKJ/e4C60yEIt GBZvH9STFmRUjzEp4LgDLqnrRlXrZ8nn9tnqel2LI7zVffJqTzY1SQaZlBkE5q9KgCqgNquvdVF r8ODUj71JdaDtUEfQfhx+G8+x+UoX7cGd19dSFd X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--6.647000-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: DF0AFB3E5D025F6365231BC54E73BDE096F68A18030DC6CC188FCD1EB7D572242000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240128_223045_831484_9F3E449C X-CRM114-Status: GOOD ( 15.86 ) 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 Validates the restricted memory flags when setting up a queue and ensures the queue has the proper capability. Signed-off-by: Jeffrey Kardatzke Signed-off-by: Yunfei Dong --- .../media/common/videobuf2/videobuf2-core.c | 21 +++++++++++++++++++ .../media/common/videobuf2/videobuf2-v4l2.c | 4 +++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index 41a832dd1426..7f5fd9ec9117 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -813,6 +813,15 @@ static bool verify_coherency_flags(struct vb2_queue *q, bool non_coherent_mem) return true; } +static bool verify_restricted_mem_flags(struct vb2_queue *q, bool restricted_mem) +{ + if (restricted_mem != q->restricted_mem) { + dprintk(q, 1, "restricted memory model mismatch\n"); + return false; + } + return true; +} + int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, unsigned int flags, unsigned int *count) { @@ -820,6 +829,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, unsigned int q_num_bufs = vb2_get_num_buffers(q); unsigned plane_sizes[VB2_MAX_PLANES] = { }; bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT; + bool restricted_mem = flags & V4L2_MEMORY_FLAG_RESTRICTED; unsigned int i; int ret = 0; @@ -862,6 +872,9 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, return 0; } + if (restricted_mem && (!q->allow_restricted_mem || memory != V4L2_MEMORY_DMABUF)) + return -EINVAL; + /* * Make sure the requested values and current defaults are sane. */ @@ -882,6 +895,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, if (ret) return ret; set_queue_coherency(q, non_coherent_mem); + q->restricted_mem = restricted_mem; /* * Ask the driver how many buffers and planes per buffer it requires. @@ -986,6 +1000,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, unsigned plane_sizes[VB2_MAX_PLANES] = { }; bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT; unsigned int q_num_bufs = vb2_get_num_buffers(q); + bool restricted_mem = flags & V4L2_MEMORY_FLAG_RESTRICTED; bool no_previous_buffers = !q_num_bufs; int ret = 0; @@ -994,6 +1009,9 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, return -ENOBUFS; } + if (restricted_mem && (!q->allow_restricted_mem || memory != V4L2_MEMORY_DMABUF)) + return -EINVAL; + if (no_previous_buffers) { if (q->waiting_in_dqbuf && *count) { dprintk(q, 1, "another dup()ped fd is waiting for a buffer\n"); @@ -1015,6 +1033,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, return ret; q->waiting_for_buffers = !q->is_output; set_queue_coherency(q, non_coherent_mem); + q->restricted_mem = restricted_mem; } else { if (q->memory != memory) { dprintk(q, 1, "memory model mismatch\n"); @@ -1022,6 +1041,8 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, } if (!verify_coherency_flags(q, non_coherent_mem)) return -EINVAL; + if (!verify_restricted_mem_flags(q, restricted_mem)) + return -EINVAL; } num_buffers = min(*count, q->max_num_buffers - q_num_bufs); diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index 54d572c3b515..e825b1e2e22f 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -686,6 +686,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps) *caps |= V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS; if (q->supports_requests) *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS; + if (q->allow_restricted_mem && q->io_modes & VB2_DMABUF) + *caps |= V4L2_BUF_CAP_SUPPORTS_RESTRICTED_MEM; } static void validate_memory_flags(struct vb2_queue *q, @@ -700,7 +702,7 @@ static void validate_memory_flags(struct vb2_queue *q, *flags = 0; } else { /* Clear all unknown flags. */ - *flags &= V4L2_MEMORY_FLAG_NON_COHERENT; + *flags &= V4L2_MEMORY_FLAG_NON_COHERENT | V4L2_MEMORY_FLAG_RESTRICTED; } }