From patchwork Mon Jan 13 15:36:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Ho X-Patchwork-Id: 11331585 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 3F9E8139A for ; Tue, 14 Jan 2020 08:20:07 +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 1A77B2075B for ; Tue, 14 Jan 2020 08:20:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=brkho-com.20150623.gappssmtp.com header.i=@brkho-com.20150623.gappssmtp.com header.b="JzTeFNQl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1A77B2075B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=brkho.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 629C76E316; Tue, 14 Jan 2020 08:19:53 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-yw1-xc64.google.com (mail-yw1-xc64.google.com [IPv6:2607:f8b0:4864:20::c64]) by gabe.freedesktop.org (Postfix) with ESMTPS id 816F46E0FA for ; Mon, 13 Jan 2020 15:37:49 +0000 (UTC) Received: by mail-yw1-xc64.google.com with SMTP id 192so6343297ywy.0 for ; Mon, 13 Jan 2020 07:37:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brkho-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=loDIHBoPYn2n1QOh85N5e2eDCf5hlfrUH2iJe1lXbAU=; b=JzTeFNQlIcxcKxsUt4WBb8hrFA5YPZaFijIKGvuDSFMwdwDHmqP+1UYQ5if0ikCuvU 4KRRfiPXa766MYXZHZoy/FtEVZPfN6Zv/8AKhQ1CW8T7a6GXHxBU9P7XQy6tEJ4hv7mU crp2IwkesyxUt7jPDuVUbQvk4Hvh+Fzy0I4b/h3zaVlsfKwmdvZu2Lrdgo1FYocJanIa I/r1ukjZxsfTOxX6t6c5FfANAfYcw/ww5qn0rvkLa+SK+RFms70oogsnmTiLnbjdwX4x LkQbRq5Em1icHZ6PeY5Yzqzj4Kac72h9zRIafr2DqPBXnQDcJ/T1WVd+xaQVZ4PqWcjd BQNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=loDIHBoPYn2n1QOh85N5e2eDCf5hlfrUH2iJe1lXbAU=; b=U1HwsWWmKDhFk0mk1odBWjV6Ll/ErSZpnlhWc/MaiP4uhSjSwYuemSpA+Se+VC2umG 21TS6t62zr+3QJtnVi2HXCZ4A4L7YSkDPkmITYk5FH4Qy+dWLXUyS149UAtTGfnoJkzW ATzzWyuXKFBFBs6AH1dfpYuIeGXPUZ7/TgtaACtfUEii4BXuYUQjeGlQ/lp81JJKGJO/ nnD1SW1+DK3qs3aatY9wu7xDjKBruwZFJl/IVNXfUMsP968JQl1k7hKNKjAlVcPhyUsG M2/oGACS+BfmOmMGbWICyuQQ5esJaeqgZKUkz3pCFqH5Ed4RlYEMNmbqMU/QTFCfmy4y 4ODw== X-Gm-Message-State: APjAAAXDhL6yfnFNYs6LpwedAQABvKQTixiw8R0UzeoWG0rNe+JtUrXB tRdKVQCmotJcw2+0MmeoLBAgkO4m67XIrXg+cG/36z5OfHhfBA== X-Google-Smtp-Source: APXvYqzMjmiQB7wQayg8gcOf8UiLu0z7+b2h25Mhv2JtXmHzedOaKlIp6R+p2rKcfYiuvs/alD7Snejg9ij7 X-Received: by 2002:a25:3883:: with SMTP id f125mr14312395yba.271.1578929868538; Mon, 13 Jan 2020 07:37:48 -0800 (PST) Received: from hob1.nyc.corp.google.com ([100.118.32.120]) by smtp-relay.gmail.com with ESMTPS id m193sm1672393ywd.0.2020.01.13.07.37.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jan 2020 07:37:48 -0800 (PST) X-Relaying-Domain: brkho.com From: Brian Ho To: freedreno@lists.freedesktop.org Subject: [PATCH 2/2] drm/msm: Add MSM_WAIT_IOVA ioctl Date: Mon, 13 Jan 2020 10:36:05 -0500 Message-Id: <20200113153605.52350-3-brian@brkho.com> X-Mailer: git-send-email 2.25.0.rc1.283.g88dfdc4193-goog In-Reply-To: <20200113153605.52350-1-brian@brkho.com> References: <20200113153605.52350-1-brian@brkho.com> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 14 Jan 2020 08:19:25 +0000 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: robdclark@chromium.org, Brian Ho , David Airlie , "open list:DRM DRIVER FOR MSM ADRENO GPU" , open list , "open list:DRM DRIVER FOR MSM ADRENO GPU" , hoegsberg@chromium.org, Sean Paul Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Implements an ioctl to wait until a value at a given iova is greater than or equal to a supplied value. This will initially be used by turnip (open-source Vulkan driver for QC in mesa) for occlusion queries where the userspace driver can block on a query becoming available before continuing via vkGetQueryPoolResults. Signed-off-by: Brian Ho --- drivers/gpu/drm/msm/msm_drv.c | 63 +++++++++++++++++++++++++++++++++-- include/uapi/drm/msm_drm.h | 13 ++++++++ 2 files changed, 74 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index c84f0a8b3f2c..dcc46874a5a2 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -36,10 +36,11 @@ * MSM_GEM_INFO ioctl. * - 1.4.0 - softpin, MSM_RELOC_BO_DUMP, and GEM_INFO support to set/get * GEM object's debug name - * - 1.5.0 - Add SUBMITQUERY_QUERY ioctl + * - 1.5.0 - Add SUBMITQUEUE_QUERY ioctl + * - 1.6.0 - Add WAIT_IOVA ioctl */ #define MSM_VERSION_MAJOR 1 -#define MSM_VERSION_MINOR 5 +#define MSM_VERSION_MINOR 6 #define MSM_VERSION_PATCHLEVEL 0 static const struct drm_mode_config_funcs mode_config_funcs = { @@ -952,6 +953,63 @@ static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data, return msm_submitqueue_remove(file->driver_priv, id); } +static int msm_ioctl_wait_iova(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct msm_drm_private *priv = dev->dev_private; + struct drm_gem_object *obj; + struct drm_msm_wait_iova *args = data; + ktime_t timeout = to_ktime(args->timeout); + unsigned long remaining_jiffies = timeout_to_jiffies(&timeout); + struct msm_gpu *gpu = priv->gpu; + void *base_vaddr; + uint64_t *vaddr; + int ret; + + if (args->pad) + return -EINVAL; + + if (!gpu) + return 0; + + obj = drm_gem_object_lookup(file, args->handle); + if (!obj) + return -ENOENT; + + base_vaddr = msm_gem_get_vaddr(obj); + if (IS_ERR(base_vaddr)) { + ret = PTR_ERR(base_vaddr); + goto err_put_gem_object; + } + if (args->offset + sizeof(*vaddr) > obj->size) { + ret = -EINVAL; + goto err_put_vaddr; + } + + vaddr = base_vaddr + args->offset; + + /* Assumes WC mapping */ + ret = wait_event_interruptible_timeout( + gpu->event, *vaddr >= args->value, remaining_jiffies); + + if (ret == 0) { + ret = -ETIMEDOUT; + goto err_put_vaddr; + } else if (ret == -ERESTARTSYS) { + goto err_put_vaddr; + } + + msm_gem_put_vaddr(obj); + drm_gem_object_put_unlocked(obj); + return 0; + +err_put_vaddr: + msm_gem_put_vaddr(obj); +err_put_gem_object: + drm_gem_object_put_unlocked(obj); + return ret; +} + static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_RENDER_ALLOW), @@ -964,6 +1022,7 @@ static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_NEW, msm_ioctl_submitqueue_new, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(MSM_WAIT_IOVA, msm_ioctl_wait_iova, DRM_RENDER_ALLOW), }; static const struct vm_operations_struct vm_ops = { diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h index 0b85ed6a3710..8477f28a4ee1 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -298,6 +298,17 @@ struct drm_msm_submitqueue_query { __u32 pad; }; +/* This ioctl blocks until the u64 value at bo + offset is greater than or + * equal to the reference value. + */ +struct drm_msm_wait_iova { + __u32 handle; /* in, GEM handle */ + __u32 pad; + struct drm_msm_timespec timeout; /* in */ + __u64 offset; /* offset into bo */ + __u64 value; /* reference value */ +}; + #define DRM_MSM_GET_PARAM 0x00 /* placeholder: #define DRM_MSM_SET_PARAM 0x01 @@ -315,6 +326,7 @@ struct drm_msm_submitqueue_query { #define DRM_MSM_SUBMITQUEUE_NEW 0x0A #define DRM_MSM_SUBMITQUEUE_CLOSE 0x0B #define DRM_MSM_SUBMITQUEUE_QUERY 0x0C +#define DRM_MSM_WAIT_IOVA 0x0D #define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param) #define DRM_IOCTL_MSM_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new) @@ -327,6 +339,7 @@ struct drm_msm_submitqueue_query { #define DRM_IOCTL_MSM_SUBMITQUEUE_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_NEW, struct drm_msm_submitqueue) #define DRM_IOCTL_MSM_SUBMITQUEUE_CLOSE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_CLOSE, __u32) #define DRM_IOCTL_MSM_SUBMITQUEUE_QUERY DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_QUERY, struct drm_msm_submitqueue_query) +#define DRM_IOCTL_MSM_WAIT_IOVA DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_WAIT_IOVA, struct drm_msm_wait_iova) #if defined(__cplusplus) }