From patchwork Thu Jan 23 23:57:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Ho X-Patchwork-Id: 11349365 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 1D85017EA for ; Thu, 23 Jan 2020 23:59:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E071020706 for ; Thu, 23 Jan 2020 23:59:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=brkho-com.20150623.gappssmtp.com header.i=@brkho-com.20150623.gappssmtp.com header.b="TG08TXKz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729545AbgAWX7w (ORCPT ); Thu, 23 Jan 2020 18:59:52 -0500 Received: from mail-yw1-f99.google.com ([209.85.161.99]:39093 "EHLO mail-yw1-f99.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729149AbgAWX7w (ORCPT ); Thu, 23 Jan 2020 18:59:52 -0500 Received: by mail-yw1-f99.google.com with SMTP id h126so65171ywc.6 for ; Thu, 23 Jan 2020 15:59:51 -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=XkieX+lARW7jwwokHZn19MDXFxT+kUy0zHmwNjMdulo=; b=TG08TXKztCGbirXV6G1fy/G5h2JPYKTRpwTr5NDhYAC9FlbjFTEysoVWk63mFgSC2p 0si89LjNS/Kj+XvzCqDXcVCySiuwSO9REulyHuxCZBYcaACRk0R1OOwrVrhmsVvQfShP HBB2c2+4cFmq9+zEe6wQvnNZXzDStJIlwZwhpZ3z2Dk7EAQ/J7odBM4G98Kgm2qrPmYf Pa2VynKmTPsfuLsoxeOxVh7eVdFp/Jt+EBdSboipvjHonh9hQbmpnLCmYaiyQenVe4nF kmF7FEvPJJzpJ6L5U4Lcc1KoGguFl2APFAkEQC2Z48TFXN4okshC9KGGPJJ6zzuB8fKZ 0MCw== 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=XkieX+lARW7jwwokHZn19MDXFxT+kUy0zHmwNjMdulo=; b=uDj/+tU+LqsYUlUHjhP2WEGHBQnEsBRepCutSaaiPt39wnWjdbH6MPFwdf8nO6lKSl qQI8lK6ZAJJSP5Ygt6ZufIX69pmTAqh3GFETrb6+rDUY2iR7ql1GvcPHHe1+reyuXbbi kS6CCAlqaXDK6Hd6StVsPTpGzAzSXpRsNxS9mL4q0jtmVn0kD6AApIoaVws8UqIwnBRH VYl2P7MjMd0KaZExwHCEsIr31+9xjVrvB1D2qT6D2y2ZaZCq19xIEkBa6Z1mk3WVFNTA 54riaQHkfe3YR8w+7i3uIVAXmnHKYDKUUoaQwOv4hmA529H7ltqXqP35Ta7X5+RLxhxb PeDQ== X-Gm-Message-State: APjAAAV8AsOn3w0kB/CWQ8g+1/9+ZHW22TxmCKVic4wHvlO1YSeCL/1r OQ9nsh1onkbTbCfrS8pURu94lDcZ6KbaxvIP4z+Y+CJCcS2R+Q== X-Google-Smtp-Source: APXvYqyNb7l2M3Y21n67mPcv2NN0GqSRUmdlYWCjqiOEL6AOYJWcIF95BSaX2iBxD91TZWVYUcAS56Ea7say X-Received: by 2002:a0d:c5c2:: with SMTP id h185mr157830ywd.287.1579823990901; Thu, 23 Jan 2020 15:59:50 -0800 (PST) Received: from hob1.nyc.corp.google.com ([100.118.32.120]) by smtp-relay.gmail.com with ESMTPS id i82sm591239ywg.11.2020.01.23.15.59.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jan 2020 15:59:50 -0800 (PST) X-Relaying-Domain: brkho.com From: Brian Ho To: freedreno@lists.freedesktop.org Cc: hoegsberg@chromium.org, robdclark@chromium.org, Brian Ho , Rob Clark , Sean Paul , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), dri-devel@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 2/2] drm/msm: Add MSM_WAIT_IOVA ioctl Date: Thu, 23 Jan 2020 18:57:38 -0500 Message-Id: <20200123235738.48182-3-brian@brkho.com> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog In-Reply-To: <20200123235738.48182-1-brian@brkho.com> References: <20200123235738.48182-1-brian@brkho.com> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org 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. Change-Id: I1413fc34b7eb8ba569c765ad65126e9024341730 Signed-off-by: Brian Ho --- drivers/gpu/drm/msm/msm_drv.c | 61 +++++++++++++++++++++++++++++++++-- include/uapi/drm/msm_drm.h | 14 ++++++++ 2 files changed, 73 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index c84f0a8b3f2c..f746ac86bca3 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 +953,61 @@ 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 -ENODEV; + + obj = drm_gem_object_lookup(file, args->handle); + if (!obj) + return -ENOENT; + + if (args->offset + sizeof(*vaddr) < args->offset || + args->offset + sizeof(*vaddr) > obj->size) { + ret = -EINVAL; + goto err_put_gem_object; + } + + base_vaddr = msm_gem_get_vaddr(obj); + if (IS_ERR(base_vaddr)) { + ret = PTR_ERR(base_vaddr); + goto err_put_gem_object; + } + + vaddr = base_vaddr + args->offset; + + /* TODO: Support 64 bit reference values with a flag. */ + ret = wait_event_interruptible_timeout(gpu->event, + (int32_t)((uint32_t)(*vaddr & args->mask) - + (uint32_t)args->value) >= 0, + remaining_jiffies); + + if (ret == 0) + ret = -ETIMEDOUT; + else if (ret > 0) + ret = 0; + + 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 +1020,7 @@ 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..d4eac312f56e 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -298,6 +298,18 @@ struct drm_msm_submitqueue_query { __u32 pad; }; +/* This ioctl blocks until the 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; /* in, offset into bo */ + __u64 mask; /* in, mask of the value at bo + offset */ + __u64 value; /* in, reference value, 32 bits */ +}; + #define DRM_MSM_GET_PARAM 0x00 /* placeholder: #define DRM_MSM_SET_PARAM 0x01 @@ -315,6 +327,7 @@ 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 +340,7 @@ 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) }