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 2b0c35cacbc6..5d2a39e491aa 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"
@@ -569,6 +570,14 @@ 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);
/*
@@ -590,6 +599,10 @@ 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 4f2e3feabc0f..30e347adcbe9 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>
@@ -283,3 +284,41 @@ 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..f4d47577c94e
--- /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>
+
+/**
+ * struct drm_mtk_gem_create - User-desired buffer creation information structure.
+ *
+ * @size: user-desired memory allocation size.
+ * - this size value would be page-aligned internally.
+ * @flags: user request for setting memory type or cache attributes.
+ * @handle: returned a handle to created gem object.
+ * - this handle will be set by gem module of kernel side.
+ */
+struct drm_mtk_gem_create {
+ uint64_t size;
+ uint32_t flags;
+ uint32_t handle;
+};
+
+/**
+ * struct drm_mtk_gem_map_off - A structure for getting buffer offset.
+ *
+ * @handle: a pointer to gem object created.
+ * @pad: just padding to be 64-bit aligned.
+ * @offset: relatived offset value of the memory region allocated.
+ * - this value should be set by user.
+ */
+struct drm_mtk_gem_map_off {
+ uint32_t handle;
+ uint32_t pad;
+ uint64_t offset;
+};
+
+#define DRM_MTK_GEM_CREATE 0x00
+#define DRM_MTK_GEM_MAP_OFFSET 0x01
+
+#define DRM_IOCTL_MTK_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + \
+ DRM_MTK_GEM_CREATE, struct drm_mtk_gem_create)
+
+#define DRM_IOCTL_MTK_GEM_MAP_OFFSET DRM_IOWR(DRM_COMMAND_BASE + \
+ DRM_MTK_GEM_MAP_OFFSET, struct drm_mtk_gem_map_off)
+
+#endif /* _UAPI_MEDIATEK_DRM_H */
--
2.18.0
Hi, Jason: On Sun, 2023-12-24 at 02:29 +0800, Jason-JH.Lin wrote: > 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 2b0c35cacbc6..5d2a39e491aa 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" > @@ -569,6 +570,14 @@ 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), For secure buffer, we don't need map offset function. If you really need this function, separate this to another patch and describe why need this. Regards, CK > +}; > + > DEFINE_DRM_GEM_FOPS(mtk_drm_fops); > > /* > @@ -590,6 +599,10 @@ 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 4f2e3feabc0f..30e347adcbe9 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> > @@ -283,3 +284,41 @@ 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..f4d47577c94e > --- /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> > + > +/** > + * struct drm_mtk_gem_create - User-desired buffer creation > information structure. > + * > + * @size: user-desired memory allocation size. > + * - this size value would be page-aligned internally. > + * @flags: user request for setting memory type or cache attributes. > + * @handle: returned a handle to created gem object. > + * - this handle will be set by gem module of kernel side. > + */ > +struct drm_mtk_gem_create { > + uint64_t size; > + uint32_t flags; > + uint32_t handle; > +}; > + > +/** > + * struct drm_mtk_gem_map_off - A structure for getting buffer > offset. > + * > + * @handle: a pointer to gem object created. > + * @pad: just padding to be 64-bit aligned. > + * @offset: relatived offset value of the memory region allocated. > + * - this value should be set by user. > + */ > +struct drm_mtk_gem_map_off { > + uint32_t handle; > + uint32_t pad; > + uint64_t offset; > +}; > + > +#define DRM_MTK_GEM_CREATE 0x00 > +#define DRM_MTK_GEM_MAP_OFFSET 0x01 > + > +#define DRM_IOCTL_MTK_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + \ > + DRM_MTK_GEM_CREATE, struct drm_mtk_gem_create) > + > +#define DRM_IOCTL_MTK_GEM_MAP_OFFSET DRM_IOWR(DRM_COMMAND_BASE + \ > + DRM_MTK_GEM_MAP_OFFSET, struct drm_mtk_gem_map_off) > + > +#endif /* _UAPI_MEDIATEK_DRM_H */
Hi CK, Thanks for the reviews. On Mon, 2023-12-25 at 09:05 +0000, CK Hu (胡俊光) wrote: > Hi, Jason: > > > On Sun, 2023-12-24 at 02:29 +0800, Jason-JH.Lin wrote: > > 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 2b0c35cacbc6..5d2a39e491aa 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" > > @@ -569,6 +570,14 @@ 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), > > For secure buffer, we don't need map offset function. If you really > need this function, separate this to another patch and describe why > need this. > > Regards, > CK OK, I'll remove this function. Regards Jason-JH.Lin > > > +}; > > + > > DEFINE_DRM_GEM_FOPS(mtk_drm_fops); > > > > /* > > @@ -590,6 +599,10 @@ 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 4f2e3feabc0f..30e347adcbe9 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> > > @@ -283,3 +284,41 @@ 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..f4d47577c94e > > --- /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> > > + > > +/** > > + * struct drm_mtk_gem_create - User-desired buffer creation > > information structure. > > + * > > + * @size: user-desired memory allocation size. > > + * - this size value would be page-aligned internally. > > + * @flags: user request for setting memory type or cache > > attributes. > > + * @handle: returned a handle to created gem object. > > + * - this handle will be set by gem module of kernel side. > > + */ > > +struct drm_mtk_gem_create { > > + uint64_t size; > > + uint32_t flags; > > + uint32_t handle; > > +}; > > + > > +/** > > + * struct drm_mtk_gem_map_off - A structure for getting buffer > > offset. > > + * > > + * @handle: a pointer to gem object created. > > + * @pad: just padding to be 64-bit aligned. > > + * @offset: relatived offset value of the memory region allocated. > > + * - this value should be set by user. > > + */ > > +struct drm_mtk_gem_map_off { > > + uint32_t handle; > > + uint32_t pad; > > + uint64_t offset; > > +}; > > + > > +#define DRM_MTK_GEM_CREATE 0x00 > > +#define DRM_MTK_GEM_MAP_OFFSET 0x01 > > + > > +#define DRM_IOCTL_MTK_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + \ > > + DRM_MTK_GEM_CREATE, struct drm_mtk_gem_create) > > + > > +#define DRM_IOCTL_MTK_GEM_MAP_OFFSET DRM_IOWR(DRM_COMMAND_BA > > SE + \ > > + DRM_MTK_GEM_MAP_OFFSET, struct drm_mtk_gem_map_off) > > + > > +#endif /* _UAPI_MEDIATEK_DRM_H */
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