From patchwork Wed Apr 9 21:22:20 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Adri=C3=A1n_Larumbe?= X-Patchwork-Id: 880768 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 25963213E61; Wed, 9 Apr 2025 21:23:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744233809; cv=pass; b=jWanYpU3cVZ/mZAJJCH6B6pXFbsyhix3/1E3vQYovp3DbP1GGxGq+uznBeiciPby0l5p60wVsd9iFfjv3e++QkBDKt7it1m+H0NQ9PJE3on5UP07Bah5UnthC2jkK0tuwo+dIKMS/THehSYqIFEwpp0vfPIPCIfa33BJy9lUJyo= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744233809; c=relaxed/simple; bh=W526/VYoRDv7jHlG50mUe7NqCALY/mvxLYenuRqAAmI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lLmauxdzCHDb8FUnIKs2ut9uEfWpqs2RZXEEvcAY20SXWQ9Lawneh4FzAu0zd1z8tZVBGUJJ9fXAQzym3N/Sy9vKpUuUsV1gLyCpleFhedvxrNuotaHzoMMfVqdSnUuG39DSDu7cTINSbrAfVz/0F5SRF/4005XoFKV0xl5A5dc= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b=ZBq6ZJOU; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b="ZBq6ZJOU" ARC-Seal: i=1; a=rsa-sha256; t=1744233782; cv=none; d=zohomail.com; s=zohoarc; b=FJV3pc833bIRbPzVyXzTulmDXoxzq3MrffAKUsmNPkA1UvsqTgzgtgowqrPvf+jhlSnol3lXgs585er6eoJa3RdluIKLwJjDWt7gga7LfNymZD1PRoxm3X6/G2jfTbZIOYj66pvg6Z8TYsxWCUMWINRSayXPsHYoMlEeHlrJwv4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1744233782; h=Content-Type: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=Ir19yE+MXtexO3ipzJRCOl2IVHxCkNiTqTV3u8pxkUk=; b=fHEcVEJ4CVHAXVZALmgSI0u0lRGQ2an5a1Rl9C7858fjHrqAL4z3wz1hdur30oFvGbNxDlvVPa4fVOOnHoYSHwqkxSSuNJn3Qsr046Eb3pKi4GIcNy/PNRAgUdjWtHHPbrrfjNAlKfIB+IHV9K13S93h8SE++t2ut9eqqDK6lic= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=adrian.larumbe@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1744233782; s=zohomail; d=collabora.com; i=adrian.larumbe@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=Ir19yE+MXtexO3ipzJRCOl2IVHxCkNiTqTV3u8pxkUk=; b=ZBq6ZJOU1HsFJ+Y16JojgdrM/QuC1cGN0FmJDin2XW4k5Noh8OVo4uHFFGNuKSxG 3Ssqd+FRxHrr9hFADBsQMgjN0CSkh9s8rl4M34PuGdCws5n2dntIJzOg8yXLBIpCtR1 LdqCCwSAX8Y0Yi2tBkDF2N+UotMHTLjtkUZ/raHk= Received: by mx.zohomail.com with SMTPS id 1744233780141531.26184077911; Wed, 9 Apr 2025 14:23:00 -0700 (PDT) From: =?utf-8?q?Adri=C3=A1n_Larumbe?= To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: kernel@collabora.com, =?utf-8?q?Adri=C3=A1n_Larumbe?= , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org Subject: [PATCH v6 2/4] drm/panthor: Add driver IOCTL for setting BO labels Date: Wed, 9 Apr 2025 22:22:20 +0100 Message-ID: <20250409212233.2036154-3-adrian.larumbe@collabora.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250409212233.2036154-1-adrian.larumbe@collabora.com> References: <20250409212233.2036154-1-adrian.larumbe@collabora.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Allow UM to label a BO for which it possesses a DRM handle. Signed-off-by: Adrián Larumbe Reviewed-by: Liviu Dudau Reviewed-by: Boris Brezillon --- drivers/gpu/drm/panthor/panthor_drv.c | 42 ++++++++++++++++++++++++++- drivers/gpu/drm/panthor/panthor_gem.h | 2 ++ include/uapi/drm/panthor_drm.h | 23 +++++++++++++++ 3 files changed, 66 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c index 06fe46e32073..983b24f1236c 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -1331,6 +1331,44 @@ static int panthor_ioctl_vm_get_state(struct drm_device *ddev, void *data, return 0; } +static int panthor_ioctl_bo_set_label(struct drm_device *ddev, void *data, + struct drm_file *file) +{ + struct drm_panthor_bo_set_label *args = data; + struct drm_gem_object *obj; + const char *label; + int ret = 0; + + obj = drm_gem_object_lookup(file, args->handle); + if (!obj) + return -ENOENT; + + if (args->size && args->label) { + if (args->size > PANTHOR_BO_LABEL_MAXLEN) { + ret = -E2BIG; + goto err_label; + } + + label = strndup_user(u64_to_user_ptr(args->label), args->size); + if (IS_ERR(label)) { + ret = PTR_ERR(label); + goto err_label; + } + } else if (args->size && !args->label) { + ret = -EINVAL; + goto err_label; + } else { + label = NULL; + } + + panthor_gem_bo_set_label(obj, label); + +err_label: + drm_gem_object_put(obj); + + return ret; +} + static int panthor_open(struct drm_device *ddev, struct drm_file *file) { @@ -1400,6 +1438,7 @@ static const struct drm_ioctl_desc panthor_drm_driver_ioctls[] = { PANTHOR_IOCTL(TILER_HEAP_CREATE, tiler_heap_create, DRM_RENDER_ALLOW), PANTHOR_IOCTL(TILER_HEAP_DESTROY, tiler_heap_destroy, DRM_RENDER_ALLOW), PANTHOR_IOCTL(GROUP_SUBMIT, group_submit, DRM_RENDER_ALLOW), + PANTHOR_IOCTL(BO_SET_LABEL, bo_set_label, DRM_RENDER_ALLOW), }; static int panthor_mmap(struct file *filp, struct vm_area_struct *vma) @@ -1509,6 +1548,7 @@ static void panthor_debugfs_init(struct drm_minor *minor) * - 1.2 - adds DEV_QUERY_GROUP_PRIORITIES_INFO query * - adds PANTHOR_GROUP_PRIORITY_REALTIME priority * - 1.3 - adds DRM_PANTHOR_GROUP_STATE_INNOCENT flag + * - 1.4 - adds DRM_IOCTL_PANTHOR_BO_SET_LABEL ioctl */ static const struct drm_driver panthor_drm_driver = { .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ | @@ -1522,7 +1562,7 @@ static const struct drm_driver panthor_drm_driver = { .name = "panthor", .desc = "Panthor DRM driver", .major = 1, - .minor = 3, + .minor = 4, .gem_create_object = panthor_gem_create_object, .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, diff --git a/drivers/gpu/drm/panthor/panthor_gem.h b/drivers/gpu/drm/panthor/panthor_gem.h index af0d77338860..beba066b4974 100644 --- a/drivers/gpu/drm/panthor/panthor_gem.h +++ b/drivers/gpu/drm/panthor/panthor_gem.h @@ -13,6 +13,8 @@ struct panthor_vm; +#define PANTHOR_BO_LABEL_MAXLEN PAGE_SIZE + /** * struct panthor_gem_object - Driver specific GEM object. */ diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h index 97e2c4510e69..12b1994499a9 100644 --- a/include/uapi/drm/panthor_drm.h +++ b/include/uapi/drm/panthor_drm.h @@ -127,6 +127,9 @@ enum drm_panthor_ioctl_id { /** @DRM_PANTHOR_TILER_HEAP_DESTROY: Destroy a tiler heap. */ DRM_PANTHOR_TILER_HEAP_DESTROY, + + /** @DRM_PANTHOR_BO_SET_LABEL: Label a BO. */ + DRM_PANTHOR_BO_SET_LABEL, }; /** @@ -977,6 +980,24 @@ struct drm_panthor_tiler_heap_destroy { __u32 pad; }; +/** + * struct drm_panthor_bo_set_label - Arguments passed to DRM_IOCTL_PANTHOR_BO_SET_LABEL + */ +struct drm_panthor_bo_set_label { + /** @handle: Handle of the buffer object to label. */ + __u32 handle; + + /** + * @size: Length of the label, including the NULL terminator. + * + * Cannot be greater than the OS page size. + */ + __u32 size; + + /** @label: User pointer to a NULL-terminated string */ + __u64 label; +}; + /** * DRM_IOCTL_PANTHOR() - Build a Panthor IOCTL number * @__access: Access type. Must be R, W or RW. @@ -1019,6 +1040,8 @@ enum { DRM_IOCTL_PANTHOR(WR, TILER_HEAP_CREATE, tiler_heap_create), DRM_IOCTL_PANTHOR_TILER_HEAP_DESTROY = DRM_IOCTL_PANTHOR(WR, TILER_HEAP_DESTROY, tiler_heap_destroy), + DRM_IOCTL_PANTHOR_BO_SET_LABEL = + DRM_IOCTL_PANTHOR(WR, BO_SET_LABEL, bo_set_label), }; #if defined(__cplusplus)