From patchwork Thu Sep 5 17:32:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mary Guillemard X-Patchwork-Id: 13792754 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 756C8CD8CBD for ; Thu, 5 Sep 2024 17:35:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F40FC10E8F5; Thu, 5 Sep 2024 17:35:37 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=collabora.com header.i=mary.guillemard@collabora.com header.b="DqX9BpED"; dkim-atps=neutral Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8250110E8F4 for ; Thu, 5 Sep 2024 17:35:37 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; t=1725557729; cv=none; d=zohomail.com; s=zohoarc; b=AMYGfRo7vJVHx6piKS9c61oF8jSPkUCEGlA4q7zzZOhc3R6R6U7abB57tltTjwU/CQLG5OeVnTPW5aZdQqx5DnNtvjdsvHhHzMmsaQ3hWhk+4BLJChzRdRTY40lnUr33V5J2xNtvn//tiHG4yOA18Dx2JxI4iK7rwz14N4RNmmU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1725557729; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=YBxW50ooKYwzSELObYl4BCGBYO/zZdlGmtetqXK1rn8=; b=kAQBZqun3oS27SSU3QWZP0aK12QrdBsroEprbtkh6+jpS+HAMqghuOKGwsaMGVKQVOYzBbf6QD0VWMFpIfxPYl0ilaB8+nTJL63hX954V1UqfvR9gz87madS3eRl/Cf5r/zqofF0hqcMJOgIKXzmDH0I32faaQFIMyNBVoXVfQE= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=mary.guillemard@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1725557729; s=zohomail; d=collabora.com; i=mary.guillemard@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=YBxW50ooKYwzSELObYl4BCGBYO/zZdlGmtetqXK1rn8=; b=DqX9BpEDs6dM8hmeM2LF+yOxHdn0ROKDB3/aiua4TATmkD95L4r0R5o0Ef5LtGwh YpHvj6WNNExBKFG5d4Oh5Sdq4LUojoaASjVNGfk2PWIHaCZKRo1ExYMWxqZjlgCNMrA HJA0QZVDAscHYDO0VcZEUoCPPLpkmc3w/fCK39WE= Received: by mx.zohomail.com with SMTPS id 1725557727401558.2064842389682; Thu, 5 Sep 2024 10:35:27 -0700 (PDT) From: Mary Guillemard To: linux-kernel@vger.kernel.org Cc: dri-devel@lists.freedesktop.org, Boris Brezillon , Christopher Healy , kernel@collabora.com, Mary Guillemard , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Subject: [PATCH v2 2/2] drm/panthor: Add DEV_QUERY_GROUP_PRIORITIES_INFO dev query Date: Thu, 5 Sep 2024 19:32:23 +0200 Message-ID: <20240905173222.252641-4-mary.guillemard@collabora.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240905173222.252641-2-mary.guillemard@collabora.com> References: <20240905173222.252641-2-mary.guillemard@collabora.com> MIME-Version: 1.0 X-ZohoMailClient: External 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Expose allowed group priorities with a new device query. This new uAPI will be used in Mesa to properly report what priorities a user can use for EGL_IMG_context_priority. Since this extends the uAPI and because userland needs a way to advertise priorities accordingly, this also bumps the driver minor version. v2: - Remove drm_panthor_group_allow_priority_flags definition - Document that allowed_mask is a bitmask of drm_panthor_group_priority Signed-off-by: Mary Guillemard Reviewed-by: Boris Brezillon Reviewed-by: Steven Price --- drivers/gpu/drm/panthor/panthor_drv.c | 61 ++++++++++++++++++--------- include/uapi/drm/panthor_drm.h | 22 ++++++++++ 2 files changed, 64 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c index 7b1db2adcb4c..f85aa2d99f09 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -170,6 +170,7 @@ panthor_get_uobj_array(const struct drm_panthor_obj_array *in, u32 min_stride, PANTHOR_UOBJ_DECL(struct drm_panthor_gpu_info, tiler_present), \ PANTHOR_UOBJ_DECL(struct drm_panthor_csif_info, pad), \ PANTHOR_UOBJ_DECL(struct drm_panthor_timestamp_info, current_timestamp), \ + PANTHOR_UOBJ_DECL(struct drm_panthor_group_priorities_info, pad), \ PANTHOR_UOBJ_DECL(struct drm_panthor_sync_op, timeline_value), \ PANTHOR_UOBJ_DECL(struct drm_panthor_queue_submit, syncs), \ PANTHOR_UOBJ_DECL(struct drm_panthor_queue_create, ringbuf_size), \ @@ -777,11 +778,41 @@ static int panthor_query_timestamp_info(struct panthor_device *ptdev, return 0; } +static int group_priority_permit(struct drm_file *file, + u8 priority) +{ + /* Ensure that priority is valid */ + if (priority > PANTHOR_GROUP_PRIORITY_REALTIME) + return -EINVAL; + + /* Medium priority and below are always allowed */ + if (priority <= PANTHOR_GROUP_PRIORITY_MEDIUM) + return 0; + + /* Higher priorities require CAP_SYS_NICE or DRM_MASTER */ + if (capable(CAP_SYS_NICE) || drm_is_current_master(file)) + return 0; + + return -EACCES; +} + +static void panthor_query_group_priorities_info(struct drm_file *file, + struct drm_panthor_group_priorities_info *arg) +{ + int prio; + + for (prio = PANTHOR_GROUP_PRIORITY_REALTIME; prio >= 0; prio--) { + if (!group_priority_permit(file, prio)) + arg->allowed_mask |= 1 << prio; + } +} + static int panthor_ioctl_dev_query(struct drm_device *ddev, void *data, struct drm_file *file) { struct panthor_device *ptdev = container_of(ddev, struct panthor_device, base); struct drm_panthor_dev_query *args = data; struct drm_panthor_timestamp_info timestamp_info; + struct drm_panthor_group_priorities_info priorities_info; int ret; if (!args->pointer) { @@ -798,6 +829,10 @@ static int panthor_ioctl_dev_query(struct drm_device *ddev, void *data, struct d args->size = sizeof(timestamp_info); return 0; + case DRM_PANTHOR_DEV_QUERY_GROUP_PRIORITIES_INFO: + args->size = sizeof(priorities_info); + return 0; + default: return -EINVAL; } @@ -818,6 +853,10 @@ static int panthor_ioctl_dev_query(struct drm_device *ddev, void *data, struct d return PANTHOR_UOBJ_SET(args->pointer, args->size, timestamp_info); + case DRM_PANTHOR_DEV_QUERY_GROUP_PRIORITIES_INFO: + panthor_query_group_priorities_info(file, &priorities_info); + return PANTHOR_UOBJ_SET(args->pointer, args->size, priorities_info); + default: return -EINVAL; } @@ -1037,24 +1076,6 @@ static int panthor_ioctl_group_destroy(struct drm_device *ddev, void *data, return panthor_group_destroy(pfile, args->group_handle); } -static int group_priority_permit(struct drm_file *file, - u8 priority) -{ - /* Ensure that priority is valid */ - if (priority > PANTHOR_GROUP_PRIORITY_REALTIME) - return -EINVAL; - - /* Medium priority and below are always allowed */ - if (priority <= PANTHOR_GROUP_PRIORITY_MEDIUM) - return 0; - - /* Higher priorities require CAP_SYS_NICE or DRM_MASTER */ - if (capable(CAP_SYS_NICE) || drm_is_current_master(file)) - return 0; - - return -EACCES; -} - static int panthor_ioctl_group_create(struct drm_device *ddev, void *data, struct drm_file *file) { @@ -1436,6 +1457,8 @@ static void panthor_debugfs_init(struct drm_minor *minor) * PanCSF driver version: * - 1.0 - initial interface * - 1.1 - adds DEV_QUERY_TIMESTAMP_INFO query + * - 1.2 - adds DEV_QUERY_GROUP_PRIORITIES_INFO query + * - adds PANTHOR_GROUP_PRIORITY_REALTIME priority */ static const struct drm_driver panthor_drm_driver = { .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ | @@ -1449,7 +1472,7 @@ static const struct drm_driver panthor_drm_driver = { .desc = "Panthor DRM driver", .date = "20230801", .major = 1, - .minor = 1, + .minor = 2, .gem_create_object = panthor_gem_create_object, .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h index 011a555e4674..87c9cb555dd1 100644 --- a/include/uapi/drm/panthor_drm.h +++ b/include/uapi/drm/panthor_drm.h @@ -263,6 +263,11 @@ enum drm_panthor_dev_query_type { /** @DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO: Query timestamp information. */ DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO, + + /** + * @DRM_PANTHOR_DEV_QUERY_GROUP_PRIORITIES_INFO: Query allowed group priorities information. + */ + DRM_PANTHOR_DEV_QUERY_GROUP_PRIORITIES_INFO, }; /** @@ -399,6 +404,23 @@ struct drm_panthor_timestamp_info { __u64 timestamp_offset; }; +/** + * struct drm_panthor_group_priorities_info - Group priorities information + * + * Structure grouping all queryable information relating to the allowed group priorities. + */ +struct drm_panthor_group_priorities_info { + /** + * @allowed_mask: Bitmask of the allowed group priorities. + * + * Each bit represents a variant of the enum drm_panthor_group_priority. + */ + __u8 allowed_mask; + + /** @pad: Padding fields, MBZ. */ + __u8 pad[3]; +}; + /** * struct drm_panthor_dev_query - Arguments passed to DRM_PANTHOR_IOCTL_DEV_QUERY */