From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: "Jason-JH.Lin" <jason-jh.lin@mediatek.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Jeffrey Kardatzke <jkardatzke@google.com>,
devicetree@vger.kernel.org, Conor Dooley <conor+dt@kernel.org>,
Project_Global_Chrome_Upstream_Group@mediatek.com,
Singo Chang <singo.chang@mediatek.com>,
Nicolas Boichat <drinkcat@chromium.org>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
linaro-mm-sig@lists.linaro.org,
Jason-ch Chen <jason-ch.chen@mediatek.com>,
Nancy Lin <nancy.lin@mediatek.com>,
linux-mediatek@lists.infradead.org,
Shawn Sung <shawn.sung@mediatek.com>,
Johnson Wang <johnson.wang@mediatek.com>,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: Re: [PATCH v2 01/11] drm/mediatek: Add interface to allocate MediaTek GEM buffer.
Date: Tue, 24 Oct 2023 10:37:47 +0200 [thread overview]
Message-ID: <654f22f8-5070-4064-bcc3-5259345e4ca8@collabora.com> (raw)
In-Reply-To: <20231023044549.21412-2-jason-jh.lin@mediatek.com>
Il 23/10/23 06:45, Jason-JH.Lin ha scritto:
> From: CK Hu <ck.hu@mediatek.com>
>
> Add an interface to allocate MediaTek GEM buffers, allow the IOCTLs
> to be used by render nodes.
> This patch also sets the RENDER driver feature.
>
> Signed-off-by: CK Hu <ck.hu@mediatek.com>
> Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
> Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
> Tested-by: Daniel Kurtz <djkurtz@chromium.org>
> Tested-by: Pi-Hsun Shih <pihsun@chromium.org>
>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 13 ++++++
> drivers/gpu/drm/mediatek/mtk_drm_gem.c | 39 +++++++++++++++++
> drivers/gpu/drm/mediatek/mtk_drm_gem.h | 12 ++++++
> include/uapi/drm/mediatek_drm.h | 58 ++++++++++++++++++++++++++
> 4 files changed, 122 insertions(+)
> create mode 100644 include/uapi/drm/mediatek_drm.h
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 93552d76b6e7..e3e9dbdf265b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -24,6 +24,7 @@
> #include <drm/drm_of.h>
> #include <drm/drm_probe_helper.h>
> #include <drm/drm_vblank.h>
> +#include <drm/mediatek_drm.h>
>
> #include "mtk_drm_crtc.h"
> #include "mtk_drm_ddp_comp.h"
> @@ -541,6 +542,14 @@ static void mtk_drm_kms_deinit(struct drm_device *drm)
> component_unbind_all(drm->dev, drm);
> }
>
> +static const struct drm_ioctl_desc mtk_ioctls[] = {
> + DRM_IOCTL_DEF_DRV(MTK_GEM_CREATE, mtk_gem_create_ioctl,
> + DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
> + DRM_IOCTL_DEF_DRV(MTK_GEM_MAP_OFFSET,
> + mtk_gem_map_offset_ioctl,
> + DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
> +};
> +
> DEFINE_DRM_GEM_FOPS(mtk_drm_fops);
>
> /*
> @@ -562,6 +571,10 @@ static const struct drm_driver mtk_drm_driver = {
>
> .gem_prime_import = mtk_drm_gem_prime_import,
> .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
> +
> + .ioctls = mtk_ioctls,
> + .num_ioctls = ARRAY_SIZE(mtk_ioctls),
> +
> .fops = &mtk_drm_fops,
>
> .name = DRIVER_NAME,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
> index 9f364df52478..bcce723f257d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
> @@ -4,6 +4,7 @@
> */
>
> #include <linux/dma-buf.h>
> +#include <drm/mediatek_drm.h>
>
> #include <drm/drm.h>
> #include <drm/drm_device.h>
> @@ -272,3 +273,41 @@ void mtk_drm_gem_prime_vunmap(struct drm_gem_object *obj,
> mtk_gem->kvaddr = NULL;
> kfree(mtk_gem->pages);
> }
> +
> +int mtk_gem_map_offset_ioctl(struct drm_device *drm, void *data,
> + struct drm_file *file_priv)
> +{
> + struct drm_mtk_gem_map_off *args = data;
> +
> + return drm_gem_dumb_map_offset(file_priv, drm, args->handle,
> + &args->offset);
> +}
> +
> +int mtk_gem_create_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file_priv)
> +{
> + struct mtk_drm_gem_obj *mtk_gem;
> + struct drm_mtk_gem_create *args = data;
> + int ret;
> +
> + mtk_gem = mtk_drm_gem_create(dev, args->size, false);
> + if (IS_ERR(mtk_gem))
> + return PTR_ERR(mtk_gem);
> +
> + /*
> + * allocate a id of idr table where the obj is registered
> + * and handle has the id what user can see.
> + */
> + ret = drm_gem_handle_create(file_priv, &mtk_gem->base, &args->handle);
> + if (ret)
> + goto err_handle_create;
> +
> + /* drop reference from allocate - handle holds it now. */
> + drm_gem_object_put(&mtk_gem->base);
> +
> + return 0;
> +
> +err_handle_create:
> + mtk_drm_gem_free_object(&mtk_gem->base);
> + return ret;
> +}
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.h b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
> index 78f23b07a02e..90f3d2916ec5 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
> @@ -46,4 +46,16 @@ int mtk_drm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map);
> void mtk_drm_gem_prime_vunmap(struct drm_gem_object *obj,
> struct iosys_map *map);
>
> +/*
> + * request gem object creation and buffer allocation as the size
> + * that it is calculated with framebuffer information such as width,
> + * height and bpp.
> + */
> +int mtk_gem_create_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file_priv);
> +
> +/* get buffer offset to map to user space. */
> +int mtk_gem_map_offset_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file_priv);
> +
> #endif
> diff --git a/include/uapi/drm/mediatek_drm.h b/include/uapi/drm/mediatek_drm.h
> new file mode 100644
> index 000000000000..c050de320a84
> --- /dev/null
> +++ b/include/uapi/drm/mediatek_drm.h
> @@ -0,0 +1,58 @@
> +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
> +/*
> + * Copyright (c) 2015 MediaTek Inc.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef _UAPI_MEDIATEK_DRM_H
> +#define _UAPI_MEDIATEK_DRM_H
> +
> +#include <drm/drm.h>
> +
> +/**
> + * User-desired buffer creation information structure.
You're almost there.... Read:
https://docs.kernel.org/doc-guide/kernel-doc.html#structure-union-and-enumeration-documentation
Regards,
Angelo
next prev parent reply other threads:[~2023-10-24 8:38 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-23 4:45 [PATCH v2 00/11] Add mediate-drm secure flow for SVP Jason-JH.Lin
2023-10-23 4:45 ` [PATCH v2 01/11] drm/mediatek: Add interface to allocate MediaTek GEM buffer Jason-JH.Lin
2023-10-24 8:37 ` AngeloGioacchino Del Regno [this message]
2023-10-25 7:47 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 02/11] drm/mediatek/uapi: Add DRM_MTK_GEM_CREATED_ENCRYPTTED flag Jason-JH.Lin
2023-10-24 8:37 ` AngeloGioacchino Del Regno
2023-10-25 7:51 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 03/11] drm/mediatek: Add secure buffer control flow to mtk_drm_gem Jason-JH.Lin
2023-10-24 8:37 ` AngeloGioacchino Del Regno
2023-10-25 7:50 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 04/11] drm/mediatek: Add secure identify flag and funcution to mtk_drm_plane Jason-JH.Lin
2023-10-24 3:35 ` CK Hu (胡俊光)
2023-10-25 6:39 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 05/11] drm/mediatek: Add mtk_ddp_sec_write to config secure buffer info Jason-JH.Lin
2023-10-24 8:37 ` AngeloGioacchino Del Regno
2023-10-25 7:53 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 06/11] drm/mediatek: Add get_sec_port interface to mtk_ddp_comp Jason-JH.Lin
2023-10-23 4:45 ` [PATCH v2 07/11] drm/mediatek: Add secure layer config support for ovl Jason-JH.Lin
2023-10-24 8:37 ` AngeloGioacchino Del Regno
2023-10-25 7:57 ` Jason-JH Lin (林睿祥)
2023-10-25 3:08 ` CK Hu (胡俊光)
2023-10-25 8:01 ` Jason-JH Lin (林睿祥)
2023-10-26 10:07 ` CK Hu (胡俊光)
2023-11-05 13:18 ` Jason-JH Lin (林睿祥)
2023-11-06 1:33 ` CK Hu (胡俊光)
2023-11-06 2:51 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 08/11] drm/mediatek: Add secure layer config support for ovl_adaptor Jason-JH.Lin
2023-10-24 8:37 ` AngeloGioacchino Del Regno
2023-10-25 8:03 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 09/11] drm/mediatek: Add secure flow support to mediatek-drm Jason-JH.Lin
2023-10-24 7:42 ` CK Hu (胡俊光)
2023-10-25 8:31 ` Jason-JH Lin (林睿祥)
2023-10-31 6:01 ` CK Hu (胡俊光)
2023-11-05 13:04 ` Jason-JH Lin (林睿祥)
2023-11-06 1:27 ` CK Hu (胡俊光)
2023-11-06 2:59 ` Jason-JH Lin (林睿祥)
2023-11-06 3:11 ` CK Hu (胡俊光)
2023-11-06 5:48 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 10/11] drm/mediatek: Add cmdq_insert_backup_cookie before secure pkt finalize Jason-JH.Lin
2023-10-26 2:26 ` CK Hu (胡俊光)
2023-11-05 13:35 ` Jason-JH Lin (林睿祥)
2023-11-06 1:36 ` CK Hu (胡俊光)
2023-11-06 1:59 ` Jason-JH Lin (林睿祥)
2023-10-23 4:45 ` [PATCH v2 11/11] arm64: dts: mt8195: Add secure mbox settings for vdosys Jason-JH.Lin
2023-10-31 2:12 ` [PATCH v2 00/11] Add mediate-drm secure flow for SVP CK Hu (胡俊光)
2023-11-05 13:44 ` Jason-JH Lin (林睿祥)
2023-11-06 1:37 ` CK Hu (胡俊光)
2023-11-06 2:00 ` Jason-JH Lin (林睿祥)
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