From patchwork Sun Nov 6 21:02:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oded Gabbay X-Patchwork-Id: 13033571 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 C06CAC433FE for ; Sun, 6 Nov 2022 21:03:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 505B310E1BF; Sun, 6 Nov 2022 21:02:59 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by gabe.freedesktop.org (Postfix) with ESMTPS id AED6E10E0E2 for ; Sun, 6 Nov 2022 21:02:54 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 41975B80D15; Sun, 6 Nov 2022 21:02:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F73AC433C1; Sun, 6 Nov 2022 21:02:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1667768571; bh=BA86wt9qy7BhHqwygVEIPzDOnzGpw90IgpGJ0BKnjow=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EZN0JbtuSGI/GOHNSA119TPi5Luxjec1iYJsO/HhPn0IenOXsDBJN6Qp4w+9bxJRn ULg3IYFcQVQIENTpPCYegqn/rSESGomFJNhk26a4hEQMf+0c7NZ5FQ4BP55qLkI0+y Ak+j6frEeuprsmbZcREgAPPI/mzxpxQMg328yWKDvJi2bcH7al+TTLDaWHJyeCkbGQ 0McbJvl27RKkQFY8RGusUrega0ix6TWh5W7Y+LLHLvL+E5zkMV6PtIAOwdZFNvSvey uLkltG2abNCcLbP+XRA+GHEEZek+6AtTJZbXOS0HiT9ckfDbwVy+hpOGUJUPejakKZ QKsXU548MJjyg== From: Oded Gabbay To: David Airlie , Daniel Vetter , Arnd Bergmann , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Jason Gunthorpe , John Hubbard , Alex Deucher Subject: [RFC PATCH v3 3/3] drm: initialize accel framework Date: Sun, 6 Nov 2022 23:02:25 +0200 Message-Id: <20221106210225.2065371-4-ogabbay@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221106210225.2065371-1-ogabbay@kernel.org> References: <20221106210225.2065371-1-ogabbay@kernel.org> 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: Tvrtko Ursulin , Jacek Lawrynowicz , Jeffrey Hugo , Jiho Chu , Randy Dunlap , Christoph Hellwig , Stanislaw Gruszka , Thomas Zimmermann , Kevin Hilman , Yuji Ishikawa , Maciej Kwapulinski , Jagan Teki Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Now that we have the accel framework code ready, let's call the accel functions from all the appropriate places. These places are the drm module init/exit functions, and all the drm_minor handling functions. Signed-off-by: Oded Gabbay --- Changes in v3: - Call the new accel_debugfs_init() to initalize debugfs per minor. - accel_minor_replace() is void so no need to check return value. drivers/gpu/drm/drm_drv.c | 102 ++++++++++++++++++++++++++---------- drivers/gpu/drm/drm_sysfs.c | 24 ++++++--- 2 files changed, 91 insertions(+), 35 deletions(-) -- 2.25.1 diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 8214a0b1ab7f..1aec019f6389 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -35,6 +35,7 @@ #include #include +#include #include #include #include @@ -90,6 +91,8 @@ static struct drm_minor **drm_minor_get_slot(struct drm_device *dev, return &dev->primary; case DRM_MINOR_RENDER: return &dev->render; + case DRM_MINOR_ACCEL: + return &dev->accel; default: BUG(); } @@ -104,9 +107,13 @@ static void drm_minor_alloc_release(struct drm_device *dev, void *data) put_device(minor->kdev); - spin_lock_irqsave(&drm_minor_lock, flags); - idr_remove(&drm_minors_idr, minor->index); - spin_unlock_irqrestore(&drm_minor_lock, flags); + if (minor->type == DRM_MINOR_ACCEL) { + accel_minor_remove(minor->index); + } else { + spin_lock_irqsave(&drm_minor_lock, flags); + idr_remove(&drm_minors_idr, minor->index); + spin_unlock_irqrestore(&drm_minor_lock, flags); + } } static int drm_minor_alloc(struct drm_device *dev, unsigned int type) @@ -123,13 +130,17 @@ static int drm_minor_alloc(struct drm_device *dev, unsigned int type) minor->dev = dev; idr_preload(GFP_KERNEL); - spin_lock_irqsave(&drm_minor_lock, flags); - r = idr_alloc(&drm_minors_idr, - NULL, - 64 * type, - 64 * (type + 1), - GFP_NOWAIT); - spin_unlock_irqrestore(&drm_minor_lock, flags); + if (type == DRM_MINOR_ACCEL) { + r = accel_minor_alloc(); + } else { + spin_lock_irqsave(&drm_minor_lock, flags); + r = idr_alloc(&drm_minors_idr, + NULL, + 64 * type, + 64 * (type + 1), + GFP_NOWAIT); + spin_unlock_irqrestore(&drm_minor_lock, flags); + } idr_preload_end(); if (r < 0) @@ -161,10 +172,14 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type) if (!minor) return 0; - ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root); - if (ret) { - DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); - goto err_debugfs; + if (minor->type == DRM_MINOR_ACCEL) { + accel_debugfs_init(minor, minor->index); + } else { + ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root); + if (ret) { + DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); + goto err_debugfs; + } } ret = device_add(minor->kdev); @@ -172,9 +187,13 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type) goto err_debugfs; /* replace NULL with @minor so lookups will succeed from now on */ - spin_lock_irqsave(&drm_minor_lock, flags); - idr_replace(&drm_minors_idr, minor, minor->index); - spin_unlock_irqrestore(&drm_minor_lock, flags); + if (minor->type == DRM_MINOR_ACCEL) { + accel_minor_replace(minor, minor->index); + } else { + spin_lock_irqsave(&drm_minor_lock, flags); + idr_replace(&drm_minors_idr, minor, minor->index); + spin_unlock_irqrestore(&drm_minor_lock, flags); + } DRM_DEBUG("new minor registered %d\n", minor->index); return 0; @@ -194,9 +213,13 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type) return; /* replace @minor with NULL so lookups will fail from now on */ - spin_lock_irqsave(&drm_minor_lock, flags); - idr_replace(&drm_minors_idr, NULL, minor->index); - spin_unlock_irqrestore(&drm_minor_lock, flags); + if (minor->type == DRM_MINOR_ACCEL) { + accel_minor_replace(NULL, minor->index); + } else { + spin_lock_irqsave(&drm_minor_lock, flags); + idr_replace(&drm_minors_idr, NULL, minor->index); + spin_unlock_irqrestore(&drm_minor_lock, flags); + } device_del(minor->kdev); dev_set_drvdata(minor->kdev, NULL); /* safety belt */ @@ -603,6 +626,14 @@ static int drm_dev_init(struct drm_device *dev, /* no per-device feature limits by default */ dev->driver_features = ~0u; + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL) && + (drm_core_check_feature(dev, DRIVER_RENDER) || + drm_core_check_feature(dev, DRIVER_MODESET))) { + + DRM_ERROR("DRM driver can't be both a compute acceleration and graphics driver\n"); + return -EINVAL; + } + drm_legacy_init_members(dev); INIT_LIST_HEAD(&dev->filelist); INIT_LIST_HEAD(&dev->filelist_internal); @@ -628,15 +659,21 @@ static int drm_dev_init(struct drm_device *dev, dev->anon_inode = inode; - if (drm_core_check_feature(dev, DRIVER_RENDER)) { - ret = drm_minor_alloc(dev, DRM_MINOR_RENDER); + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL)) { + ret = drm_minor_alloc(dev, DRM_MINOR_ACCEL); if (ret) goto err; - } + } else { + if (drm_core_check_feature(dev, DRIVER_RENDER)) { + ret = drm_minor_alloc(dev, DRM_MINOR_RENDER); + if (ret) + goto err; + } - ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY); - if (ret) - goto err; + ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY); + if (ret) + goto err; + } ret = drm_legacy_create_map_hash(dev); if (ret) @@ -883,6 +920,10 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags) if (ret) goto err_minors; + ret = drm_minor_register(dev, DRM_MINOR_ACCEL); + if (ret) + goto err_minors; + ret = create_compat_control_link(dev); if (ret) goto err_minors; @@ -902,12 +943,13 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags) driver->name, driver->major, driver->minor, driver->patchlevel, driver->date, dev->dev ? dev_name(dev->dev) : "virtual device", - dev->primary->index); + dev->primary ? dev->primary->index : dev->accel->index); goto out_unlock; err_minors: remove_compat_control_link(dev); + drm_minor_unregister(dev, DRM_MINOR_ACCEL); drm_minor_unregister(dev, DRM_MINOR_PRIMARY); drm_minor_unregister(dev, DRM_MINOR_RENDER); out_unlock: @@ -950,6 +992,7 @@ void drm_dev_unregister(struct drm_device *dev) drm_legacy_rmmaps(dev); remove_compat_control_link(dev); + drm_minor_unregister(dev, DRM_MINOR_ACCEL); drm_minor_unregister(dev, DRM_MINOR_PRIMARY); drm_minor_unregister(dev, DRM_MINOR_RENDER); } @@ -1034,6 +1077,7 @@ static const struct file_operations drm_stub_fops = { static void drm_core_exit(void) { drm_privacy_screen_lookup_exit(); + accel_core_exit(); unregister_chrdev(DRM_MAJOR, "drm"); debugfs_remove(drm_debugfs_root); drm_sysfs_destroy(); @@ -1061,6 +1105,10 @@ static int __init drm_core_init(void) if (ret < 0) goto error; + ret = accel_core_init(); + if (ret < 0) + goto error; + drm_privacy_screen_lookup_init(); drm_core_init_complete = true; diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index 430e00b16eec..b8da978d85bb 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -19,6 +19,7 @@ #include #include +#include #include #include #include @@ -471,19 +472,26 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor) struct device *kdev; int r; - if (minor->type == DRM_MINOR_RENDER) - minor_str = "renderD%d"; - else - minor_str = "card%d"; - kdev = kzalloc(sizeof(*kdev), GFP_KERNEL); if (!kdev) return ERR_PTR(-ENOMEM); device_initialize(kdev); - kdev->devt = MKDEV(DRM_MAJOR, minor->index); - kdev->class = drm_class; - kdev->type = &drm_sysfs_device_minor; + + if (minor->type == DRM_MINOR_ACCEL) { + minor_str = "accel%d"; + accel_set_device_instance_params(kdev, minor->index); + } else { + if (minor->type == DRM_MINOR_RENDER) + minor_str = "renderD%d"; + else + minor_str = "card%d"; + + kdev->devt = MKDEV(DRM_MAJOR, minor->index); + kdev->class = drm_class; + kdev->type = &drm_sysfs_device_minor; + } + kdev->parent = minor->dev->dev; kdev->release = drm_sysfs_release; dev_set_drvdata(kdev, minor);