From patchwork Tue Feb 28 22:58:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 13155323 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 0FA34C7EE30 for ; Tue, 28 Feb 2023 22:58:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C07C410E136; Tue, 28 Feb 2023 22:58:53 +0000 (UTC) Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1F42310E103; Tue, 28 Feb 2023 22:58:49 +0000 (UTC) Received: by mail-pj1-x1029.google.com with SMTP id m8-20020a17090a4d8800b002377bced051so15349336pjh.0; Tue, 28 Feb 2023 14:58:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1677625128; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=hG7vKOCZs7RF7xaksAPYUQd1A2SxHbLuaH7Mq26I3gY=; b=EvydJjNFp+u1SVWCsmQl6hCES4FLObikUxdCaUzTp+mazMyN04WpakjfWOiWYZpQ9K +18Q+ZrVN6rXU535yHal4u0v9WlNj4fL83CX21cvR5kaAswoUkIIwPiP6yA7uSomZ2q4 gOyL+8oS9/tESst5ORa9gq9/1quHZQT/awWoAwyGXR4G4xRhnGfJueSfJbFixQNDhsV+ gSLgbCPMR+YRh9/psIjCBZ2zV70Lq/Am60VGukvTC352yjnZJCRJ6iQ47q9zdpYG+RW4 JJ/Fs8OSN0EAlcLSodzwcWV0JQ/lIWcliG3tbJoDP5OA7yH1hUodS/10ILurYlxl3Z47 xYmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1677625128; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=hG7vKOCZs7RF7xaksAPYUQd1A2SxHbLuaH7Mq26I3gY=; b=b2ZkVwN/7X92AvWdQJmH9UQ/cYTQnGdTG9W3n5P6M3okapHg+4xY0MfVEVOX/TcYEE 8QJv7SxSMhiDAeqrEEU3s6yBRAFpT6jGU+BFN7a7glUOIgdCsh1TdTASf9XTJHL0A38H kDUxPiHoOYY9gvIDH6MxvdJEbVOarEqKBYo4eboJv5Q+rukTNVT4+i8W30cmx0u9Sn82 eR22t484abIy+/7cNiw3fq5kdrQbMLrWLsFhcpUjyzrJhjfw/Z3unSmYZCEeXn7NIUco Rvx1MBeLAz/GzqJWIwf0KfrA2Hm2xGUTwHQcL8WFNWouXACAb5Gd/CN24usYnCKJBI0A zanQ== X-Gm-Message-State: AO0yUKWvMxA1lyN2mSf5N1mh9EHtZqb7vLLAX89L7aoCcBRr/qZuzuHh SuTuz/icEhFluqcPsPknwRIAuouoW8U= X-Google-Smtp-Source: AK7set8lrAj3oH7C94OxUvYLU1Uk1OCd5R4A9eqbUFXEtWJ7E8gHvhvvliXhpZQfXk8gGBCizI2YJQ== X-Received: by 2002:a17:902:cec5:b0:19a:6acc:1de2 with SMTP id d5-20020a170902cec500b0019a6acc1de2mr5095396plg.35.1677625128309; Tue, 28 Feb 2023 14:58:48 -0800 (PST) Received: from localhost ([2a00:79e1:abd:4a00:61b:48ed:72ab:435b]) by smtp.gmail.com with ESMTPSA id e19-20020a170902ed9300b0019949fd956bsm7038431plj.178.2023.02.28.14.58.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Feb 2023 14:58:47 -0800 (PST) From: Rob Clark To: dri-devel@lists.freedesktop.org Subject: [PATCH v8 05/16] dma-buf/sync_file: Surface sync-file uABI Date: Tue, 28 Feb 2023 14:58:09 -0800 Message-Id: <20230228225833.2920879-6-robdclark@gmail.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230228225833.2920879-1-robdclark@gmail.com> References: <20230228225833.2920879-1-robdclark@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Clark , Gustavo Padovan , Tvrtko Ursulin , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Jonathan Corbet , "open list:DOCUMENTATION" , open list , =?utf-8?q?Christian_K=C3=B6nig?= , "moderated list:DMA BUFFER SHARING FRAMEWORK" , Pekka Paalanen , Luben Tuikov , Rodrigo Vivi , Alex Deucher , freedreno@lists.freedesktop.org, Sumit Semwal , "open list:DMA BUFFER SHARING FRAMEWORK" Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Rob Clark We had all of the internal driver APIs, but not the all important userspace uABI, in the dma-buf doc. Fix that. And re-arrange the comments slightly as otherwise the comments for the ioctl nr defines would not show up. Signed-off-by: Rob Clark Acked-by: Pekka Paalanen --- Documentation/driver-api/dma-buf.rst | 10 ++++++-- include/uapi/linux/sync_file.h | 35 +++++++++++----------------- 2 files changed, 22 insertions(+), 23 deletions(-) diff --git a/Documentation/driver-api/dma-buf.rst b/Documentation/driver-api/dma-buf.rst index 183e480d8cea..ff3f8da296af 100644 --- a/Documentation/driver-api/dma-buf.rst +++ b/Documentation/driver-api/dma-buf.rst @@ -203,8 +203,8 @@ DMA Fence unwrap .. kernel-doc:: include/linux/dma-fence-unwrap.h :internal: -DMA Fence uABI/Sync File -~~~~~~~~~~~~~~~~~~~~~~~~ +DMA Fence Sync File +~~~~~~~~~~~~~~~~~~~ .. kernel-doc:: drivers/dma-buf/sync_file.c :export: @@ -212,6 +212,12 @@ DMA Fence uABI/Sync File .. kernel-doc:: include/linux/sync_file.h :internal: +DMA Fence Sync File uABI +~~~~~~~~~~~~~~~~~~~~~~~~ + +.. kernel-doc:: include/uapi/linux/sync_file.h + :internal: + Indefinite DMA Fences ~~~~~~~~~~~~~~~~~~~~~ diff --git a/include/uapi/linux/sync_file.h b/include/uapi/linux/sync_file.h index ee2dcfb3d660..eced40c204d7 100644 --- a/include/uapi/linux/sync_file.h +++ b/include/uapi/linux/sync_file.h @@ -16,12 +16,16 @@ #include /** - * struct sync_merge_data - data passed to merge ioctl + * struct sync_merge_data - SYNC_IOC_MERGE: merge two fences * @name: name of new fence * @fd2: file descriptor of second fence * @fence: returns the fd of the new fence to userspace * @flags: merge_data flags * @pad: padding for 64-bit alignment, should always be zero + * + * Creates a new fence containing copies of the sync_pts in both + * the calling fd and sync_merge_data.fd2. Returns the new fence's + * fd in sync_merge_data.fence */ struct sync_merge_data { char name[32]; @@ -34,8 +38,8 @@ struct sync_merge_data { /** * struct sync_fence_info - detailed fence information * @obj_name: name of parent sync_timeline -* @driver_name: name of driver implementing the parent -* @status: status of the fence 0:active 1:signaled <0:error + * @driver_name: name of driver implementing the parent + * @status: status of the fence 0:active 1:signaled <0:error * @flags: fence_info flags * @timestamp_ns: timestamp of status change in nanoseconds */ @@ -48,14 +52,19 @@ struct sync_fence_info { }; /** - * struct sync_file_info - data returned from fence info ioctl + * struct sync_file_info - SYNC_IOC_FILE_INFO: get detailed information on a sync_file * @name: name of fence * @status: status of fence. 1: signaled 0:active <0:error * @flags: sync_file_info flags * @num_fences number of fences in the sync_file * @pad: padding for 64-bit alignment, should always be zero - * @sync_fence_info: pointer to array of structs sync_fence_info with all + * @sync_fence_info: pointer to array of struct &sync_fence_info with all * fences in the sync_file + * + * Takes a struct sync_file_info. If num_fences is 0, the field is updated + * with the actual number of fences. If num_fences is > 0, the system will + * use the pointer provided on sync_fence_info to return up to num_fences of + * struct sync_fence_info, with detailed fence information. */ struct sync_file_info { char name[32]; @@ -76,23 +85,7 @@ struct sync_file_info { * no upstream users available. */ -/** - * DOC: SYNC_IOC_MERGE - merge two fences - * - * Takes a struct sync_merge_data. Creates a new fence containing copies of - * the sync_pts in both the calling fd and sync_merge_data.fd2. Returns the - * new fence's fd in sync_merge_data.fence - */ #define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 3, struct sync_merge_data) - -/** - * DOC: SYNC_IOC_FILE_INFO - get detailed information on a sync_file - * - * Takes a struct sync_file_info. If num_fences is 0, the field is updated - * with the actual number of fences. If num_fences is > 0, the system will - * use the pointer provided on sync_fence_info to return up to num_fences of - * struct sync_fence_info, with detailed fence information. - */ #define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info) #endif /* _UAPI_LINUX_SYNC_H */