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// SPDX-License-Identifier: GPL-2.0 or MIT
use kernel::{
drm,
prelude::*,
uaccess::UserSlice,
uapi, //
};
use crate::driver::{
TyrDrmDevice,
TyrDrmDriver, //
};
#[pin_data]
pub(crate) struct TyrDrmFileData {}
/// Convenience type alias for our DRM `File` type
pub(crate) type TyrDrmFile = drm::file::File<TyrDrmFileData>;
impl drm::file::DriverFile for TyrDrmFileData {
type Driver = TyrDrmDriver;
fn open(_dev: &drm::Device<Self::Driver>) -> Result<Pin<KBox<Self>>> {
KBox::try_pin_init(try_pin_init!(Self {}), GFP_KERNEL)
}
}
impl TyrDrmFileData {
pub(crate) fn dev_query(
ddev: &TyrDrmDevice,
devquery: &mut uapi::drm_panthor_dev_query,
_file: &TyrDrmFile,
) -> Result<u32> {
if devquery.pointer == 0 {
match devquery.type_ {
uapi::drm_panthor_dev_query_type_DRM_PANTHOR_DEV_QUERY_GPU_INFO => {
devquery.size = core::mem::size_of_val(&ddev.gpu_info) as u32;
Ok(0)
}
_ => Err(EINVAL),
}
} else {
match devquery.type_ {
uapi::drm_panthor_dev_query_type_DRM_PANTHOR_DEV_QUERY_GPU_INFO => {
let mut writer = UserSlice::new(
UserPtr::from_addr(devquery.pointer as usize),
devquery.size as usize,
)
.writer();
writer.write(&ddev.gpu_info)?;
Ok(0)
}
_ => Err(EINVAL),
}
}
}
}
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