From patchwork Sat Sep 5 10:34:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mikko Perttunen X-Patchwork-Id: 11758977 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 14D35166C for ; Sat, 5 Sep 2020 10:36:07 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id DB65E2074B for ; Sat, 5 Sep 2020 10:36:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=kapsi.fi header.i=@kapsi.fi header.b="Sh9kJic8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB65E2074B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id ABD546ED3E; Sat, 5 Sep 2020 10:35:56 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.kapsi.fi (mail.kapsi.fi [IPv6:2001:67c:1be8::25]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0DC716ED3B for ; Sat, 5 Sep 2020 10:35:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kapsi.fi; s=20161220; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=efbeVCQoLytd+E0O7D/DZEJokfsYVieF5J5uHvSWzyA=; b=Sh9kJic8xjqMfW7nLUrfJOhz0v oo8OrUF25PgzXr7p5Y45q8RXscjTKWidA/lzapbFICKmgkF/FqOeMxo8+S3o90nL/M6kQjMBd15D0 VtOTuG2hqUxYUZd+AIg2tGyB+ND+ksozZkKnwtEL2XHJlGUT94K7XaIlXhH8J3+DaaFAuFHRe9zYh nmYRfChdXmQq4AlQ8NCz0hAMEMZX+6FchV+Icg9x4J19ws8NrbhARiC8499ldGbvLEvZJMIgGqpPE kR4KX8kUO/rqDZhSj//bGl1v9yLLI08NrENB9ee0t5MbTY2uWh0niUsd5PDHst0eIXTZtOnBcFvXl Osqppn8A==; Received: from dsl-hkibng22-54faab-65.dhcp.inet.fi ([84.250.171.65] helo=toshino.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1kEVXx-0003SS-BW; Sat, 05 Sep 2020 13:35:49 +0300 From: Mikko Perttunen To: thierry.reding@gmail.com, jonathanh@nvidia.com, digetx@gmail.com, airlied@linux.ie, daniel@ffwll.ch Subject: [RFC PATCH v2 07/17] gpu: host1x: Introduce UAPI header Date: Sat, 5 Sep 2020 13:34:10 +0300 Message-Id: <20200905103420.3021852-8-mperttunen@nvidia.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200905103420.3021852-1-mperttunen@nvidia.com> References: <20200905103420.3021852-1-mperttunen@nvidia.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 84.250.171.65 X-SA-Exim-Mail-From: mperttunen@nvidia.com X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false 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: linux-tegra@vger.kernel.org, talho@nvidia.com, bhuntsman@nvidia.com, dri-devel@lists.freedesktop.org, Mikko Perttunen Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add the userspace interface header, specifying interfaces for allocating and accessing syncpoints from userspace, and for creating sync_file based fences based on syncpoint thresholds. Signed-off-by: Mikko Perttunen --- include/uapi/linux/host1x.h | 134 ++++++++++++++++++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 include/uapi/linux/host1x.h diff --git a/include/uapi/linux/host1x.h b/include/uapi/linux/host1x.h new file mode 100644 index 000000000000..9c8fb9425cb2 --- /dev/null +++ b/include/uapi/linux/host1x.h @@ -0,0 +1,134 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* Copyright (c) 2020 NVIDIA Corporation */ + +#ifndef _UAPI__LINUX_HOST1X_H +#define _UAPI__LINUX_HOST1X_H + +#include +#include + +#if defined(__cplusplus) +extern "C" { +#endif + +struct host1x_allocate_syncpoint { + /** + * @fd: [out] + * + * New file descriptor representing the allocated syncpoint. + */ + __s32 fd; + + __u32 reserved[3]; +}; + +struct host1x_syncpoint_info { + /** + * @id: [out] + * + * System-global ID of the syncpoint. + */ + __u32 id; + + __u32 reserved[3]; +}; + +struct host1x_syncpoint_increment { + /** + * @count: [in] + * + * Number of times to increment the syncpoint. The syncpoint can + * be observed at in-between values, but each increment is atomic. + */ + __u32 count; +}; + +struct host1x_read_syncpoint { + /** + * @id: [in] + * + * ID of the syncpoint to read. + */ + __u32 id; + + /** + * @value: [out] + * + * Current value of the syncpoint. + */ + __u32 value; +}; + +struct host1x_create_fence { + /** + * @id: [in] + * + * ID of the syncpoint to create a fence for. + */ + __u32 id; + + /** + * @threshold: [in] + * + * When the syncpoint reaches this value, the fence will be signaled. + * The syncpoint is considered to have reached the threshold when the + * following condition is true: + * + * ((value - threshold) & 0x80000000U) == 0U + * + */ + __u32 threshold; + + /** + * @fence_fd: [out] + * + * New sync_file file descriptor containing the created fence. + */ + __s32 fence_fd; + + __u32 reserved[1]; +}; + +struct host1x_fence_extract_fence { + __u32 id; + __u32 threshold; +}; + +struct host1x_fence_extract { + /** + * @fence_fd: [in] + * + * sync_file file descriptor + */ + __s32 fence_fd; + + /** + * @num_fences: [in,out] + * + * In: size of the `fences_ptr` array counted in elements. + * Out: required size of the `fences_ptr` array counted in elements. + */ + __u32 num_fences; + + /** + * @fences_ptr: [in] + * + * Pointer to array of `struct host1x_fence_extract_fence`. + */ + __u64 fences_ptr; + + __u32 reserved[2]; +}; + +#define HOST1X_IOCTL_ALLOCATE_SYNCPOINT _IOWR('X', 0x00, struct host1x_allocate_syncpoint) +#define HOST1X_IOCTL_READ_SYNCPOINT _IOR ('X', 0x01, struct host1x_read_syncpoint) +#define HOST1X_IOCTL_CREATE_FENCE _IOWR('X', 0x02, struct host1x_create_fence) +#define HOST1X_IOCTL_SYNCPOINT_INFO _IOWR('X', 0x03, struct host1x_syncpoint_info) +#define HOST1X_IOCTL_SYNCPOINT_INCREMENT _IOWR('X', 0x04, struct host1x_syncpoint_increment) +#define HOST1X_IOCTL_FENCE_EXTRACT _IOWR('X', 0x05, struct host1x_fence_extract) + +#if defined(__cplusplus) +} +#endif + +#endif